Merge "Update to tzdata2011n." into gingerbread

This is a bumper update from tzdata2010k, affecting many time zones, including:

2011c: Chile and Annette Island, Alaska.
2011d: Cuba, Samoa, and Turkey.
2011e: Chile and Morocco.
2011g: Egypt.
2011h: Russia and Curacao.
2011i: South Sudan (Africa/Juba), Samoa, Europe/Kalingrad, Newfoundland,
    America/Resolute, Metlakatla, America/Honolulu, America/Goose_Bay and
    America/St_Johns.
2011j: Samoa, Kenya, Uganda, and Tanzania.
2011k: Palestine, Gaza, Hebron, Belarus, Ukraine, and Russia.
2011l: Asia/Hebron and Pacific/Fiji (and historical data for
    America/Sitka).
2011m: Europe/Tiraspol (Moldova) and all four Ukrainian zones.
2011n: Cuba (America/Havana), Europe/Tiraspol (Moldova), Fiji.

(This list is not comprehensive.)

Bug: 5530615
Change-Id: I599250a1c19c2897425e4a5418b925b2f8f88e14

ABI-bugs.txt

@@ -1,15 +0,0 @@
-KNOWN ABI BUGS
---------------
-
-  time_t is 32-bit. http://b/5819737
-
-  off_t is 32-bit. There is off64_t, but no _FILE_OFFSET_BITS support.
-
-  sigset_t is too small on ARM and x86 (but correct on MIPS), so support
-  for real-time signals is broken. http://b/5828899
-
-  Too few TLS slots mean we can't allocate 128 pthread_key_t instances,
-  which POSIX says should be the minimum.
-
-  atexit(3) handlers registered by a shared library aren't called on
-  dlclose(3); this only affects ARM. http://b/4998315

Android.mk

@@ -16,4 +16,9 @@
 
 LOCAL_PATH := $(call my-dir)
 
-include $(call all-subdir-makefiles)
+ifneq ($(TARGET_SIMULATOR),true)
+  include $(call all-subdir-makefiles)
+else
+  # The host dalvikvm needs Android's concatenated & indexed timezone data.
+  include $(LOCAL_PATH)/libc/zoneinfo/Android.mk
+endif

MAINTAINERS

@@ -0,0 +1,6 @@
+
+Bionic support for SuperH
+-------------------------
+Bionic support for SuperH architecture is written by
+Shin-ichiro KAWASAKI <shinichiro.kawasaki.mg@hitachi.com>
+and Contributed to Android by Hitachi, Ltd. and Renesas Solutions Corp.

ThirdPartyProject.prop

@@ -0,0 +1,10 @@
+# Copyright 2010 Google Inc. All Rights Reserved.
+#Fri Jul 16 10:03:08 PDT 2010
+currentVersion=Unknown
+version=Unknown
+isNative=true
+feedurl=http\://www.openbsd.org/security.html
+name=openbsd
+keywords=openbsd
+onDevice=true
+homepage=http\://openbsd.org

libc/Jamfile

@@ -0,0 +1,441 @@
+# This file is used to build the Bionic library with the Jam build
+# tool. For info, see www.perforce.com/jam/jam.html
+#
+
+BIONIC_TOP ?= $(DOT) ;
+
+DEBUG = 1 ;
+
+# pattern used for automatic heade inclusion detection
+HDRPATTERN = "^[ 	]*#[ 	]*include[ 	]*[<\"]([^\">]*)[\">].*$" ;
+
+
+# debugging support, simply define the DEBUG variable to activate verbose output
+rule Debug
+{
+    if $(DEBUG) {
+        Echo $(1) ;
+    }
+}
+
+# return all elements from $(1) that are not in $(2)
+rule Filter  list : filter
+{
+    local result = ;
+    local item ;
+    for item in $(list) {
+        if ! $(item) in $(filter) {
+            result += $(item) ;
+        }
+    }
+    return $(result) ;
+}
+
+
+# reverse a list of elements
+rule Reverse  list
+{
+    local  result = ;
+    local  item ;
+
+    for item in $(list) {
+        result = $(item) $(result) ;
+    }
+    return $(result) ;
+}
+
+
+# decompose a path into a list of elements
+rule PathDecompose  dir
+{
+    local  result ;
+
+    while $(dir:D)
+    {
+        if ! $(dir:BS) {  # for rooted paths like "/foo"
+            break ;
+        }
+        result = $(dir:BS) $(result) ;
+        dir    = $(dir:D) ;
+    }
+    result = $(dir) $(result) ;
+    return $(result) ;
+}
+
+
+# simply a file path, i.e. get rid of . or .. when possible
+rule _PathSimplify  dir
+{
+    local  result = ;
+    local  dir2 d ;
+
+    dir  = [ PathDecompose $(dir) ] ;
+
+    # get rid of any single dot
+    dir2 = ;
+    for d in $(dir) {
+        if $(d) = "." {
+            continue ;
+        }
+        dir2 += $(d) ;
+    }
+
+    # get rid of .. when possible
+    for d in $(dir2) {
+        if $(d) = ".." && $(result) {
+            result = $(result[2-]) ;
+        }
+        else
+            result = $(d) $(result) ;
+    }
+
+    # now invert the result
+    result = [ Reverse $(result) ] ;
+    if ! $(result) {
+        result = "." ;
+    }
+    return $(result:J="/") ;
+}
+
+
+rule PathSimplify  dirs
+{
+    local result ;
+    local d ;
+    for d in $(dirs) {
+        result += [ _PathSimplify $(d) ] ;
+    }
+    return $(result) ;
+}
+
+
+# retrieve list of subdirectories
+rule ListSubDirs  paths
+{
+    local  result  = ;
+    local  entry ;
+    for entry in [ Glob $(paths) : * ] {
+        if ! $(entry:S) {
+            result += $(entry) ;
+        }
+    }
+    return [ PathSimplify $(result) ] ;
+}
+
+
+# retrieve list of sources in a given directory
+rule ListSources  path
+{
+    return [ Glob $(path) : *.S *.c ] ;
+}
+
+
+# find the prebuilt directory
+#
+if ! $(TOP) {
+    Echo "Please define TOP as the root of your device build tree" ;
+    Exit ;
+}
+
+Debug "OS is" $(OS) ;
+Debug "CPU is" $(CPU) ;
+
+if $(OS) = LINUX
+{
+    PREBUILT = $(TOP)/prebuilt/Linux ;
+}
+else if $(OS) = MACOSX
+{
+    switch $(CPU) {
+        case i386 : PREBUILT = $(TOP)/prebuilt/darwin-x86 ; break ;
+        case ppc  : PREBUILT = $(TOP)/prebuilt/darwin-ppc ; break ;
+        case *    : Echo "unsupported CPU" "$(CPU) !!" ;
+                    Echo "Please contact digit@google.com for help" ;
+                    Exit ;
+    }
+}
+else
+{
+    Echo "Unsupported operating system" $(OS) ;
+    Echo "Please contact digit@google.com for help" ;
+    Exit ;
+}
+
+Debug "TOP is" $(TOP) ;
+Debug "PREBUILT is" $(PREBUILT) ;
+
+
+# check architectures and setup toolchain variables
+#
+SUPPORTED_ARCHS = x86 arm ;
+
+ARCH ?= $(SUPPORTED_ARCHS) ;
+
+if ! $(ARCH) in $(SUPPORTED_ARCHS) {
+    Echo "The variable ARCH contains an unsupported value, use one or more of these instead" ;
+    Echo "separated by spaces:" $(SUPPORTED_ARCHS) ;
+    Exit ;
+}
+
+x86_TOOLSET_PREFIX ?= "" ;
+arm_TOOLSET_PREFIX ?= $(TOP)/prebuilt/Linux/toolchain-4.1.1/bin/arm-elf- ;
+
+for arch in $(ARCH) {
+    CC_$(arch)  = $($(arch)_TOOLSET_PREFIX)gcc ;
+    C++_$(arch) = $($(arch)_TOOLSET_PREFIX)g++ ;
+    AR_$(arch)  = $($(arch)_TOOLSET_PREFIX)ar ;
+}
+
+
+# the list of arch-independent source subdirectories
+BIONIC_SRC_SUBDIRS = string ;
+BIONIC_x86_SUBDIRS = ;
+BIONIC_arm_SUBDIRS = ;
+
+CFLAGS   = -O0 -g -W ;
+
+
+
+# find sources in a given list of subdirectories
+rule FindSources  dirs
+{
+    local dir ;
+
+    for dir in $(dirs)
+    {
+        local LOCAL_SRC NO_LOCAL_SRC ;
+
+        if [ Glob $(dir) : rules.jam ] {
+            include $(dir)/rules.jam ;
+            if $(LOCAL_SRC) {
+                _sources = $(LOCAL_SRC) ;
+            }
+            else {
+                _sources = [ Glob $(dir) : *.S *.c ] ;
+                _sources = $(_sources:BS) ;
+            }
+            if $(NO_LOCAL_SRC) {
+                _sources = [ Filter $(_sources) : $(NO_LOCAL_SRC) ] ;
+            }
+            sources += $(dir)/$(_sources) ;
+        }
+        else
+            sources += [ ListSources $(dir) ] ;
+    }
+}
+
+# Compile a given object file from a source
+rule Compile  object : source
+{
+    Depends $(object) : $(source) ;
+    Depends bionic : $(object) ;
+    Clean clean : $(object) ;
+
+    MakeLocate $(object) : $(OUT) ;
+
+
+    CC on $(object)       = $(CC_$(arch)) ;
+    CFLAGS on $(object)   = $(CFLAGS) ;
+    INCLUDES on $(object) = $(INCLUDES) ;
+    DEFINES on $(object)  = $(DEFINES) ;
+
+    HDRRULE on $(>) = HdrRule ;
+    HDRSCAN on $(>) = $(HDRPATTERN) ;
+    HDRSEARCH on $(>) = $(INCLUDES) ;
+    HDRGRIST on $(>) = $(HDRGRIST) ;
+}
+
+
+actions Compile
+{
+    $(CC) -c -o $(1) $(CFLAGS) -I$(INCLUDES) -D$(DEFINES) $(2)
+}
+
+
+rule RmTemps
+{
+    Temporary $(2) ;
+}
+
+actions quietly updated piecemeal together RmTemps
+{
+    rm -f $(2)
+}
+
+actions Archive
+{
+    $(AR) ru $(1) $(2)
+}
+
+rule Library  library : objects
+{
+    local  obj ;
+
+    if ! $(library:S) {
+        library = $(library:S=.a) ;
+    }
+    library = $(library:G=<$(arch)>) ;
+
+    Depends all : $(library) ;
+
+    if ! $(library:D) {
+        MakeLocate $(library) $(library)($(objects:BS)) : $(OUT) ;
+    }
+
+    Depends $(library) : $(library)($(objects:BS)) ;
+    for obj in $(objects) {
+        Depends $(library)($(obj:BS)) : $(obj) ;
+    }
+
+    Clean clean : $(library) ;
+
+    AR on $(library) = $(AR_$(arch)) ;
+    Archive $(library) : $(objects) ;
+
+    RmTemps $(library) : $(objects) ;
+}
+
+
+rule  ProcessDir
+{
+    local CFLAGS   = $(CFLAGS) ;
+    local DEFINES  = $(DEFINES) ;
+    local INCLUDES = $(INCLUDES) ;
+    local local_rules = [ Glob $(1) : rules.jam ] ;
+    local source sources ;
+
+    if $(local_rules) {
+        local LOCAL_CFLAGS LOCAL_DEFINES LOCAL_INCLUDES LOCAL_SRC NO_LOCAL_SRC ;
+
+        include $(local_rules) ;
+        CFLAGS   += $(LOCAL_CFLAGS) ;
+        DEFINES  += $(LOCAL_DEFINES) ;
+        INCLUDES += $(LOCAL_INCLUDES) ;
+
+        if $(LOCAL_SRC) {
+            sources = $(LOCAL_SRC) ;
+        }
+        else {
+            sources = [ Glob $(1) : *.S *.c ] ;
+            sources = $(sources:BS) ;
+        }
+
+        if $(NO_LOCAL_SRC) {
+            sources = [ Filter $(sources) : $(NO_LOCAL_SRC) ] ;
+        }
+
+        sources = $(1)/$(sources) ;
+    }
+    else
+        sources = [ Glob $(1) : *.S *.c ] ;
+
+    for source in $(sources) {
+        local name = $(source:B) ;
+
+        if $(source:S) = ".S" {
+            # record the list of assembler sources
+            ASSEMBLER_SOURCES += $(name) ;
+        }
+        else if $(source:S) = ".c" && $(name) in $(ASSEMBLER_SOURCES) {
+            # skip C source file if corresponding assembler exists
+            continue ;
+        }
+
+        objname = <$(arch)>$(name).o  ;
+
+        Compile $(objname) : $(source) ;
+        ALL_OBJECTS += $(objname) ;
+    }
+}
+
+rule ProcessDirs
+{
+    local  dir ;
+    for dir in $(1) {
+        ProcessDir $(dir) ;
+    }
+}
+
+INCLUDES_x86 = /usr/src/linux/include ;
+
+INCLUDES_arm = ../kernel_headers
+               include/arch/arm
+               include/bits32
+               ;
+
+INCLUDES = include stdio string stdlib .
+           ../msun/include
+           ;
+
+DEFINES  = ANDROID_CHANGES
+           USE_LOCKS
+           REALLOC_ZERO_BYTES_FREES
+           _LIBC=1
+           SOFTFLOAT
+           FLOATING_POINT
+           NEED_PSELECT=1
+           ANDROID
+           ;
+
+CFLAGS_x86 = ;
+
+
+for arch in $(ARCH)
+{
+    local ARCH_DIR = $(BIONIC_TOP)/arch-$(arch) ;
+    local INCLUDES = $(INCLUDES_$(arch)) $(ARCH_DIR)/include $(INCLUDES) ;
+    local DEFINES  = $(DEFINES_$(arch)) $(DEFINES) ARCH=$(arch)  ;
+    local CFLAGS   = $(CFLAGS) $(CFLAGS_$(arch)) ;
+    local OUT      = out/$(arch) ;
+    local ASSEMBLER_SOURCES ALL_OBJECTS ;
+
+    ProcessDirs [ ListSubDirs $(ARCH_DIR) ] ;
+    ProcessDirs stdlib stdio unistd string tzcode inet ;
+    ProcessDirs [ ListSubDirs netbsd ] ;
+    ProcessDirs bionic ;
+
+    Library bionic : $(ALL_OBJECTS) ;
+}
+
+BIONIC_SEARCH = $(BIONIC_TOP)/include ;
+
+
+
+# /HdrRule source : headers ;
+#
+# Arranges the proper dependencies when the file _source_ includes the files
+# _headers_ through the #include C preprocessor directive
+#
+# this rule is not intendend to be called explicitely. It is called
+# automatically during header scanning on sources handled by the @Object
+# rule (e.g. sources in @Main or @Library rules)
+#
+rule HdrRule
+{
+    # HdrRule source : headers ;
+
+    # N.B.  This rule is called during binding, potentially after
+    # the fate of many targets has been determined, and must be
+    # used with caution: don't add dependencies to unrelated
+    # targets, and don't set variables on $(<).
+
+    # Tell Jam that anything depending on $(<) also depends on $(>),
+    # set SEARCH so Jam can find the headers, but then say we don't
+    # care if we can't actually find the headers (they may have been
+    # within ifdefs),
+
+    local s = $(>:G=$(HDRGRIST:E)) ;
+
+    Includes $(<) : $(s) ;
+    SEARCH on $(s) = $(HDRSEARCH) ;
+    NoCare $(s) ;
+
+    # Propagate on $(<) to $(>)
+
+    HDRSEARCH on $(s) = $(HDRSEARCH) ;
+    HDRSCAN on $(s) = $(HDRSCAN) ;
+    HDRRULE on $(s) = $(HDRRULE) ;
+    HDRGRIST on $(s) = $(HDRGRIST) ;
+}
+
+

libc/README

@@ -0,0 +1,54 @@
+Welcome to Bionic, Android's small and custom C library for the Android
+platform.
+
+Bionic is mainly a port of the BSD C library to our Linux kernel with the
+following additions/changes:
+
+- no support for locales
+- no support for wide chars (i.e. multi-byte characters)
+- its own smallish implementation of pthreads based on Linux futexes
+- support for x86, ARM and ARM thumb CPU instruction sets and kernel interfaces
+
+Bionic is released under the standard 3-clause BSD License
+
+Bionic doesn't want to implement all features of a traditional C library, we only
+add features to it as we need them, and we try to keep things as simple and small
+as possible. Our goal is not to support scaling to thousands of concurrent threads
+on multi-processors machines; we're running this on cell-phones, damnit !!
+
+Note that Bionic doesn't provide a libthread_db or a libm implementation.
+
+
+Adding new syscalls:
+====================
+
+Bionic provides the gensyscalls.py Python script to automatically generate syscall
+stubs from the list defined in the file SYSCALLS.TXT. You can thus add a new syscall
+by doing the following:
+
+- edit SYSCALLS.TXT
+- add a new line describing your syscall, it should look like:
+
+   return_type  syscall_name(parameters)    syscall_number
+
+- in the event where you want to differentiate the syscall function from its entry name,
+  use the alternate:
+
+   return_type  funcname:syscall_name(parameters)  syscall_number
+
+- additionally, if the syscall number is different between ARM and x86, use:
+
+   return_type  funcname[:syscall_name](parameters)   arm_number,x86_number
+
+- a syscall number can be -1 to indicate that the syscall is not implemented on
+  a given platform, for example:
+
+   void   __set_tls(void*)   arm_number,-1
+
+
+the comments in SYSCALLS.TXT contain more information about the line format
+
+You can also use the 'checksyscalls.py' script to check that all the syscall
+numbers you entered are correct. It does so by looking at the values defined in
+your Linux kernel headers. The script indicates where the values are incorrect
+and what is expected instead.

libc/SYSCALLS.TXT

@@ -1,11 +1,13 @@
-# This file is used to automatically generate bionic's the system calls stubs.
+# this file is used to list all the syscalls that will be supported by
+# the Bionic C library. It is used to automatically generate the syscall
+# stubs, the list of syscall constants (__NR_xxxx) and the content of <linux/_unitsd.h>
 #
-# Each non comment line has the following format:
+# each non comment line has the following format:
 #
-# return_type    func_name[:syscall_name[:call_id]]([parameter_list])  (1|-1|"stub")
+# return_type    func_name[:syscall_name[:call_id]]([parameter_list])  (#syscall_number|stub)
 #
-# Note that:
-#      - syscall_name corresponds to the name of the syscall, which may differ from
+# note that:
+#      - syscall_name correspond to the name of the syscall, which may differ from
 #        the exported function name (example: the exit syscall is implemented by the _exit()
 #        function, which is not the same as the standard C exit() function which calls it)
 #        The call_id parameter, given that func_name and syscall_name have
@@ -16,311 +18,249 @@
 #      - each parameter type is assumed to be stored on 32 bits, there is no plan to support
 #        64-bit architectures at the moment
 #
-#      - the final field can be "1", meaning: generate a stub for each architecture,
-#        taking the constants from the kernel header files.
+#      - it there is "stub" instead of a syscall number, the tool will not generate any
+#        assembler template for the syscall; it's up to the bionic implementation to provide
+#        a relevant C stub
 #
-#      - the final field can be "stub" meaning: do not generate any stubs ---
-#        in this case, a hand-written custom stub must be provided.
-#        TODO: replace this with something like "custom" or "none", or remove
-#        it entirely.
+#      - additionally, if the syscall number is different amoung ARM, x86 and SuperH, use:
+#        return_type funcname[:syscall_name](parameters) arm_number,x86_number,superh_number
 #
-#      - the final field can be a three-element list of 1s and -1 meaning:
-#        this system call is only available on some of the architectures (1),
-#        and no stub should be generated for those architectures marked with -1.
-#        the order is arm,x86,mips.
-#        TODO: replace this with something more readable like "-arm,-mips" (meaning x86 only).
-#
-# This file is processed by a python script named gensyscalls.py.
+# the file is processed by a python script named gensyscalls.py
 #
 
 # process management
-void    _exit:exit_group (int)      1
-void    _exit_thread:exit (int)     1
-pid_t   __fork:fork (void)           1
-pid_t   _waitpid:waitpid (pid_t, int*, int, struct rusage*)   -1,1,1
-int     __waitid:waitid(int, pid_t, struct siginfo_t*, int,void*)          1
-pid_t   wait4(pid_t pid, int *status, int options, struct rusage *rusage)   1
+void    _exit:exit_group (int)      248,252
+void    _exit_thread:exit (int)	    1
+pid_t   __fork:fork (void)           2
+pid_t   _waitpid:waitpid (pid_t, int*, int, struct rusage*)   -1,7
+int     __waitid:waitid(int, pid_t, struct siginfo_t*, int,void*)          280,284
 
 # NOTE: this system call is never called directly, but we list it there
 #       to have __NR_clone properly defined.
 #
-pid_t   __sys_clone:clone (int, void*, int*, void*, int*) 1
+pid_t   __sys_clone:clone (int, void*, int*, void*, int*) 120
 
-int     execve (const char*, char* const*, char* const*)  1
+int     execve (const char*, char* const*, char* const*)  11
 
-int     __setuid:setuid32 (uid_t)    1,1,-1
-int     __setuid:setuid (uid_t)   -1,-1,1
-uid_t   getuid:getuid32 ()         1,1,-1
-uid_t   getuid:getuid ()           -1,-1,1
-gid_t   getgid:getgid32 ()         1,1,-1
-gid_t   getgid:getgid ()           -1,-1,1
-uid_t   geteuid:geteuid32 ()       1,1,-1
-uid_t   geteuid:geteuid ()         -1,-1,1
-gid_t   getegid:getegid32 ()       1,1,-1
-gid_t   getegid:getegid ()         -1,-1,1
-uid_t   getresuid:getresuid32 (uid_t *ruid, uid_t *euid, uid_t *suid)   1,1,-1
-uid_t   getresuid:getresuid (uid_t *ruid, uid_t *euid, uid_t *suid)     -1,-1,1
-gid_t   getresgid:getresgid32 (gid_t *rgid, gid_t *egid, gid_t *sgid)   1,1,-1
-gid_t   getresgid:getresgid (gid_t *rgid, gid_t *egid, gid_t *sgid)     -1,-1,1
-pid_t   gettid()                   1
-ssize_t readahead(int, off64_t, size_t)     1
-int     getgroups:getgroups32(int, gid_t *)    1,1,-1
-int     getgroups:getgroups(int, gid_t *)      -1,-1,1
-pid_t   getpgid(pid_t)             1
-pid_t   getppid()                  1
-pid_t   getsid(pid_t)              1
-pid_t   setsid()                   1
-int     setgid:setgid32(gid_t)     1,1,-1
-int     setgid:setgid(gid_t)       -1,-1,1
+int     __setuid:setuid32 (uid_t)    213
+uid_t   getuid:getuid32 ()         199
+gid_t   getgid:getgid32 ()         200
+uid_t   geteuid:geteuid32 ()       201
+gid_t   getegid:getegid32 ()       202
+uid_t   getresuid:getresuid32 ()   209
+gid_t   getresgid:getresgid32 ()   211
+pid_t   gettid()                   224
+int     getgroups:getgroups32(int, gid_t *)    205
+pid_t   getpgid(pid_t)             132
+pid_t   getppid()		   64
+pid_t   setsid()                   66
+int     setgid:setgid32(gid_t)     214
 int     seteuid:seteuid32(uid_t)   stub
-int     __setreuid:setreuid32(uid_t, uid_t)   1,1,-1
-int     __setreuid:setreuid(uid_t, uid_t)     -1,-1,1
-int     __setresuid:setresuid32(uid_t, uid_t, uid_t)   1,1,-1
-int     __setresuid:setresuid(uid_t, uid_t, uid_t)     -1,-1,1
-int     setresgid:setresgid32(gid_t, gid_t, gid_t)   1,1,-1
-int     setresgid:setresgid(gid_t, gid_t, gid_t)     -1,-1,1
-void*   __brk:brk(void*)           1
+int     __setreuid:setreuid32(uid_t, uid_t)   203
+int     __setresuid:setresuid32(uid_t, uid_t, uid_t)   208
+int     setresgid:setresgid32(gid_t, gid_t, gid_t)   210
+void*   __brk:brk(void*)           45
 # see comments in arch-arm/bionic/kill.S to understand why we don't generate an ARM stub for kill/tkill
-int     kill(pid_t, int)           -1,1,1
-int     tkill(pid_t tid, int sig)  -1,1,1
-int     tgkill(pid_t tgid, pid_t tid, int sig)  -1,1,1
-int     __ptrace:ptrace(int request, int pid, void* addr, void* data)  1
-int     __set_thread_area:set_thread_area(void*  user_desc)  -1,1,1
-int     __getpriority:getpriority(int, int)  1
-int     setpriority(int, int, int)   1
-int     setrlimit(int resource, const struct rlimit *rlp)  1
-int     getrlimit:ugetrlimit(int resource, struct rlimit *rlp)  1,1,-1
-int     getrlimit:getrlimit(int resource, struct rlimit *rlp)  -1,-1,1
-int     getrusage(int who, struct rusage*  r_usage)  1
-int     setgroups:setgroups32(int, const gid_t *)   1,1,-1
-int     setgroups:setgroups(int, const gid_t *)     -1,-1,1
+int     kill(pid_t, int)           -1,37
+int     tkill(pid_t tid, int sig)  -1,238
+int     __ptrace:ptrace(int request, int pid, void* addr, void* data)  26
+int     __set_thread_area:set_thread_area(void*  user_desc)  -1,243
+int     __getpriority:getpriority(int, int)  96
+int     setpriority(int, int, int)   97
+int     setrlimit(int resource, const struct rlimit *rlp)  75
+int     getrlimit:ugetrlimit(int resource, struct rlimit *rlp)  191
+int     getrusage(int who, struct rusage*  r_usage)  77
+int     setgroups:setgroups32(int, const gid_t *)   206
 pid_t   getpgrp(void)  stub
-int     setpgid(pid_t, pid_t)  1
-pid_t   vfork(void)  1,-1,-1
-int     setregid:setregid32(gid_t, gid_t)  1,1,-1
-int     setregid:setregid(gid_t, gid_t)    -1,-1,1
-int     chroot(const char *)  1
-# IMPORTANT: Even though <sys/prctl.h> declares prctl(int,...), the syscall stub must take 6 arguments
-#            to match the kernel implementation.
-int     prctl(int option, unsigned int arg2, unsigned int arg3, unsigned int arg4, unsigned int arg5) 1
-int     capget(cap_user_header_t header, cap_user_data_t data) 1
-int     capset(cap_user_header_t header, const cap_user_data_t data) 1
-int     sigaltstack(const stack_t*, stack_t*) 1
-int     acct(const char*  filepath)  1
+int     setpgid(pid_t, pid_t)  57
+pid_t   vfork(void)  190,-1,190
+int     setregid:setregid32(gid_t, gid_t)  204
+int     chroot(const char *)  61
+int     prctl(int option, unsigned int arg2, unsigned int arg3, unsigned int arg4, unsigned int arg5)  172
+int     capget(cap_user_header_t header, cap_user_data_t data) 184
+int     capset(cap_user_header_t header, const cap_user_data_t data) 185
+int     sigaltstack(const stack_t*, stack_t*) 186
+int     acct(const char*  filepath)  51
 
 # file descriptors
-ssize_t     read (int, void*, size_t)        1
-ssize_t     write (int, const void*, size_t)       1
-ssize_t     pread64 (int, void *, size_t, off64_t) 1
-ssize_t     pwrite64 (int, void *, size_t, off64_t) 1
-int         __open:open (const char*, int, mode_t)  1
-int         __openat:openat (int, const char*, int, mode_t) 1
-int         close (int)                      1
+ssize_t     read (int, void*, size_t)        3
+ssize_t     write (int, const void*, size_t)       4
+ssize_t     __pread64:pread64 (int, void *, size_t, off_t, off_t) 180
+ssize_t     __pwrite64:pwrite64 (int, void *, size_t, off_t, off_t) 181
+int         __open:open (const char*, int, mode_t)  5
+int         __openat:openat (int, const char*, int, mode_t)  322,295
+int         close (int)                      6
 int         creat(const char*, mode_t)       stub
-off_t       lseek(int, off_t, int)           1
-int         __llseek:_llseek (int, unsigned long, unsigned long, loff_t*, int)  1
-pid_t       getpid ()    1
+off_t       lseek(int, off_t, int)           19
+int         __llseek:_llseek (int, unsigned long, unsigned long, loff_t*, int)  140
+pid_t       getpid ()    20
 void *      mmap(void *, size_t, int, int, int, long)  stub
-void *      __mmap2:mmap2(void*, size_t, int, int, int, long)   1
-int         munmap(void *, size_t)  1
-void *      mremap(void *, size_t, size_t, unsigned long)  1
-int         msync(const void *, size_t, int)    1
-int         mprotect(const void *, size_t, int)  1
-int         madvise(const void *, size_t, int)  1
-int         mlock(const void *addr, size_t len)    1
-int         munlock(const void *addr, size_t len)   1
-int         mlockall(int flags)   1
-int         munlockall()   1
-int         mincore(void*  start, size_t  length, unsigned char*  vec)   1
-int         __ioctl:ioctl(int, int, void *)  1
-int         readv(int, const struct iovec *, int)   1
-int         writev(int, const struct iovec *, int)  1
-int         __fcntl:fcntl(int, int, void*)  1
-int         flock(int, int)   1
-int         fchmod(int, mode_t)  1
-int         dup(int)  1
-int         pipe(int *)  1,1,-1
-int         pipe2(int *, int) 1
-int         dup2(int, int)   1
-int         select:_newselect(int, struct fd_set *, struct fd_set *, struct fd_set *, struct timeval *)  1
-int         ftruncate(int, off_t)  1
-int         ftruncate64(int, off64_t) 1
-int         getdents:getdents64(unsigned int, struct dirent *, unsigned int)   1
-int         fsync(int)  1
-int         fdatasync(int) 1
-int         fchown:fchown32(int, uid_t, gid_t)  1,1,-1
-int         fchown:fchown(int, uid_t, gid_t)    -1,-1,1
-void        sync(void)  1
-int         __fcntl64:fcntl64(int, int, void *)  1
-int         __fstatfs64:fstatfs64(int, size_t, struct statfs *)  1
-ssize_t     sendfile(int out_fd, int in_fd, off_t *offset, size_t count)  1
-int         fstatat:fstatat64(int dirfd, const char *path, struct stat *buf, int flags)   1
-int         mkdirat(int dirfd, const char *pathname, mode_t mode)  1
-int         fchownat(int dirfd, const char *path, uid_t owner, gid_t group, int flags)  1
-int         fchmodat(int dirfd, const char *path, mode_t mode, int flags)  1
-int         renameat(int olddirfd, const char *oldpath, int newdirfd, const char *newpath)  1
-int         fsetxattr(int, const char *, const void *, size_t, int) 1
-ssize_t     fgetxattr(int, const char *, void *, size_t) 1
-ssize_t     flistxattr(int, char *, size_t) 1
-int         fremovexattr(int, const char *) 1
+void *      __mmap2:mmap2(void*, size_t, int, int, int, long)   192
+int         munmap(void *, size_t)  91
+void *      mremap(void *, size_t, size_t, unsigned long)  163
+int         msync(const void *, size_t, int)    144
+int         mprotect(const void *, size_t, int)  125
+int         madvise(const void *, size_t, int)  220,219
+int         mlock(const void *addr, size_t len)    150
+int         munlock(const void *addr, size_t len)   151
+int         mincore(void*  start, size_t  length, unsigned char*  vec)   219,218
+int         __ioctl:ioctl(int, int, void *)  54
+int         readv(int, const struct iovec *, int)   145
+int         writev(int, const struct iovec *, int)  146
+int         __fcntl:fcntl(int, int, void*)  55
+int         flock(int, int)   143
+int         fchmod(int, mode_t)  94
+int         dup(int)  41
+int         pipe(int *)  42,42,-1
+int         pipe2(int *, int) 359,331
+int         dup2(int, int)   63
+int         select:_newselect(int, struct fd_set *, struct fd_set *, struct fd_set *, struct timeval *)  142
+int         ftruncate(int, off_t)  93
+int         getdents:getdents64(unsigned int, struct dirent *, unsigned int)   217,220
+int         fsync(int)  118
+int         fdatasync(int) 148
+int         fchown:fchown32(int, uid_t, gid_t)  207
+void        sync(void)  36
+int         __fcntl64:fcntl64(int, int, void *)  221
+int         __fstatfs64:fstatfs64(int, size_t, struct statfs *)  267,269
+ssize_t     sendfile(int out_fd, int in_fd, off_t *offset, size_t count)  187
+int         fstatat:fstatat64(int dirfd, const char *path, struct stat *buf, int flags)   327,300
+int         mkdirat(int dirfd, const char *pathname, mode_t mode)  323,296
+int         fchownat(int dirfd, const char *path, uid_t owner, gid_t group, int flags)  325,298
+int         fchmodat(int dirfd, const char *path, mode_t mode, int flags)  333,306
+int         renameat(int olddirfd, const char *oldpath, int newdirfd, const char *newpath)  329,302
 
 # file system
-int     link (const char*, const char*)  1
-int     unlink (const char*)             1
-int     unlinkat (int, const char *, int)   1
-int     chdir (const char*)              1
-int     mknod (const char*, mode_t, dev_t)  1
-int     chmod (const char*,mode_t)          1
-int     chown:chown32(const char *, uid_t, gid_t)  1,1,-1
-int     chown:chown(const char *, uid_t, gid_t)    -1,-1,1
-int     lchown:lchown32 (const char*, uid_t, gid_t)  1,1,-1
-int     lchown:lchown (const char*, uid_t, gid_t)  -1,-1,1
-int     mount (const char*, const char*, const char*, unsigned long, const void*)  1
+int     link (const char*, const char*)  9
+int     unlink (const char*)             10
+int     unlinkat (int, const char *, int)   328,301
+int     chdir (const char*)              12
+int     mknod (const char*, mode_t, dev_t)  14
+int     chmod (const char*,mode_t)          15
+int     chown:chown32(const char *, uid_t, gid_t)  212
+int     lchown:lchown32 (const char*, uid_t, gid_t)  198
+int     mount (const char*, const char*, const char*, unsigned long, const void*)  21
 int     umount(const char*)  stub
-int     umount2 (const char*, int)  1
-int     fstat:fstat64(int, struct stat*)    1
-int     stat:stat64(const char *, struct stat *)  1
-int     lstat:lstat64(const char *, struct stat *)  1
-int     mkdir(const char *, mode_t) 1
-int     readlink(const char *, char *, size_t)  1
-int     rmdir(const char *)  1
-int     rename(const char *, const char *)  1
-int     __getcwd:getcwd(char * buf, size_t size)  1
-int     access(const char *, int)  1
-int     faccessat(int, const char *, int, int)  1
-int     symlink(const char *, const char *)  1
-int     fchdir(int)    1
-int     truncate(const char*, off_t)    1
-int     setxattr(const char *, const char *, const void *, size_t, int) 1
-int     lsetxattr(const char *, const char *, const void *, size_t, int) 1
-ssize_t getxattr(const char *, const char *, void *, size_t) 1
-ssize_t lgetxattr(const char *, const char *, void *, size_t) 1
-ssize_t listxattr(const char *, char *, size_t) 1
-ssize_t llistxattr(const char *, char *, size_t) 1
-int     removexattr(const char *, const char *) 1
-int     lremovexattr(const char *, const char *) 1
-int     __statfs64:statfs64(const char *, size_t, struct statfs *)  1
-long    unshare(unsigned long)  1
-int     swapon(const char *, int) 1
-int     swapoff(const char *) 1
-
+int     umount2 (const char*, int)  52
+int     fstat:fstat64(int, struct stat*)    197
+int     stat:stat64(const char *, struct stat *)  195
+int     lstat:lstat64(const char *, struct stat *)  196
+int     mkdir(const char *, mode_t) 39
+int     readlink(const char *, char *, size_t)  85
+int     rmdir(const char *)  40
+int     rename(const char *, const char *)  38
+int     __getcwd:getcwd(char * buf, size_t size)  183
+int     access(const char *, int)  33
+int     symlink(const char *, const char *)  83
+int     fchdir(int)    133
+int     truncate(const char*, off_t)    92
+int     __statfs64:statfs64(const char *, size_t, struct statfs *)  266,268
 # time
-int           pause ()                       1
-int           gettimeofday(struct timeval*, struct timezone*)       1
-int           settimeofday(const struct timeval*, const struct timezone*)   1
-clock_t       times(struct tms *)       1
-int           nanosleep(const struct timespec *, struct timespec *)   1
-int           clock_gettime(clockid_t clk_id, struct timespec *tp)    1
-int           clock_settime(clockid_t clk_id, const struct timespec *tp)  1
-int           clock_getres(clockid_t clk_id, struct timespec *res)   1
-int           clock_nanosleep(clockid_t clock_id, int flags, const struct timespec *req, struct timespec *rem)  1
-int           getitimer(int, const struct itimerval *)   1
-int           setitimer(int, const struct itimerval *, struct itimerval *)  1
-int           __timer_create:timer_create(clockid_t clockid, struct sigevent *evp, timer_t *timerid)    1
-int           __timer_settime:timer_settime(timer_t, int, const struct itimerspec*, struct itimerspec*) 1
-int           __timer_gettime:timer_gettime(timer_t, struct itimerspec*)                                1
-int           __timer_getoverrun:timer_getoverrun(timer_t)                                              1
-int           __timer_delete:timer_delete(timer_t)                                                      1
-int           utimes(const char*, const struct timeval tvp[2])                          1
-int           utimensat(int, const char *, const struct timespec times[2], int)         1
-int           timerfd_create(clockid_t, int)   1
-int           timerfd_settime(int, int, const struct itimerspec *, struct itimerspec *)   1
-int           timerfd_gettime(int, struct itimerspec *)   1
+int           pause ()                       29
+int           gettimeofday(struct timeval*, struct timezone*)       78
+int           settimeofday(const struct timeval*, const struct timezone*)   79
+clock_t       times(struct tms *)       43
+int           nanosleep(const struct timespec *, struct timespec *)   162
+int           clock_gettime(clockid_t clk_id, struct timespec *tp)    263,265
+int           clock_settime(clockid_t clk_id, const struct timespec *tp)  262,264
+int           clock_getres(clockid_t clk_id, struct timespec *res)   264,266
+int           clock_nanosleep(const struct timespec *req, struct timespec *rem)  265,267
+int           getitimer(int, const struct itimerval *)   105
+int           setitimer(int, const struct itimerval *, struct itimerval *)  104
+int           __timer_create:timer_create(clockid_t clockid, struct sigevent *evp, timer_t *timerid)    257,259
+int           __timer_settime:timer_settime(timer_t, int, const struct itimerspec*, struct itimerspec*) 258,260
+int           __timer_gettime:timer_gettime(timer_t, struct itimerspec*)                                259,261
+int           __timer_getoverrun:timer_getoverrun(timer_t)                                              260,262
+int           __timer_delete:timer_delete(timer_t)                                                      261,263
+int           utimes(const char*, const struct timeval tvp[2])                          269, 271
 
 # signals
-int     sigaction(int, const struct sigaction *, struct sigaction *)  1
-int     sigprocmask(int, const sigset_t *, sigset_t *)  1
-int     __sigsuspend:sigsuspend(int unused1, int unused2, unsigned mask)  1,1,-1
-int     __sigsuspend:sigsuspend(const sigset_t *mask)  -1,-1,1
-int     __rt_sigaction:rt_sigaction (int sig, const struct sigaction *act, struct sigaction *oact, size_t sigsetsize)  1
-int     __rt_sigprocmask:rt_sigprocmask (int  how, const sigset_t *set, sigset_t *oset, size_t sigsetsize)  1
-int     __rt_sigtimedwait:rt_sigtimedwait(const sigset_t *set, struct siginfo_t  *info, struct timespec_t  *timeout, size_t  sigset_size)  1
-int     sigpending(sigset_t *)  1
-int     signalfd4(int fd, const sigset_t *mask, size_t sizemask, int flags)  1
+int     sigaction(int, const struct sigaction *, struct sigaction *)  67
+int     sigprocmask(int, const sigset_t *, sigset_t *)  126
+int     __sigsuspend:sigsuspend(int unused1, int unused2, unsigned mask)  72
+int     __rt_sigaction:rt_sigaction (int sig, const struct sigaction *act, struct sigaction *oact, size_t sigsetsize)  174
+int     __rt_sigprocmask:rt_sigprocmask (int  how, const sigset_t *set, sigset_t *oset, size_t sigsetsize)  175
+int     __rt_sigtimedwait:rt_sigtimedwait(const sigset_t *set, struct siginfo_t  *info, struct timespec_t  *timeout, size_t  sigset_size)  177
+int     sigpending(sigset_t *)  73
 
 # sockets
-int           socket(int, int, int)              1,-1,1
-int           socketpair(int, int, int, int*)    1,-1,1
-int           bind(int, struct sockaddr *, int)  1,-1,1
-int           connect(int, struct sockaddr *, socklen_t)   1,-1,1
-int           listen(int, int)                   1,-1,1
-int           accept(int, struct sockaddr *, socklen_t *)  1,-1,1
-int           getsockname(int, struct sockaddr *, socklen_t *)  1,-1,1
-int           getpeername(int, struct sockaddr *, socklen_t *)  1,-1,1
-int           sendto(int, const void *, size_t, int, const struct sockaddr *, socklen_t)  1,-1,1
-int           recvfrom(int, void *, size_t, unsigned int, struct sockaddr *, socklen_t *)  1,-1,1
-int           shutdown(int, int)  1,-1,1
-int           setsockopt(int, int, int, const void *, socklen_t)  1,-1,1
-int           getsockopt(int, int, int, void *, socklen_t *)    1,-1,1
-int           sendmsg(int, const struct msghdr *, unsigned int)  1,-1,1
-int           recvmsg(int, struct msghdr *, unsigned int)   1,-1,1
+int           socket(int, int, int)              281,-1
+int           socketpair(int, int, int, int*)    288,-1
+int           bind(int, struct sockaddr *, int)  282,-1
+int           connect(int, struct sockaddr *, socklen_t)   283,-1
+int           listen(int, int)                   284,-1
+int           accept(int, struct sockaddr *, socklen_t *)  285,-1
+int           getsockname(int, struct sockaddr *, socklen_t *)  286,-1
+int           getpeername(int, struct sockaddr *, socklen_t *)  287,-1
+int           sendto(int, const void *, size_t, int, const struct sockaddr *, socklen_t)  290,-1
+int           recvfrom(int, void *, size_t, unsigned int, struct sockaddr *, socklen_t *)  292,-1
+int           shutdown(int, int)  293,-1
+int           setsockopt(int, int, int, const void *, socklen_t)  294,-1
+int           getsockopt(int, int, int, void *, socklen_t *)    295,-1
+int           sendmsg(int, const struct msghdr *, unsigned int)  296,-1
+int           recvmsg(int, struct msghdr *, unsigned int)   297,-1
 
 # sockets for x86. These are done as an "indexed" call to socketcall syscall.
-int           socket:socketcall:1 (int, int, int) -1,1,-1
-int           bind:socketcall:2 (int, struct sockaddr *, int)  -1,1,-1
-int           connect:socketcall:3(int, struct sockaddr *, socklen_t)   -1,1,-1
-int           listen:socketcall:4(int, int)                   -1,1,-1
-int           accept:socketcall:5(int, struct sockaddr *, socklen_t *)  -1,1,-1
-int           getsockname:socketcall:6(int, struct sockaddr *, socklen_t *)  -1,1,-1
-int           getpeername:socketcall:7(int, struct sockaddr *, socklen_t *)  -1,1,-1
-int           socketpair:socketcall:8(int, int, int, int*)    -1,1,-1
-int           sendto:socketcall:11(int, const void *, size_t, int, const struct sockaddr *, socklen_t)  -1,1,-1
-int           recvfrom:socketcall:12(int, void *, size_t, unsigned int, struct sockaddr *, socklen_t *)  -1,1,-1
-int           shutdown:socketcall:13(int, int)  -1,1,-1
-int           setsockopt:socketcall:14(int, int, int, const void *, socklen_t)  -1,1,-1
-int           getsockopt:socketcall:15(int, int, int, void *, socklen_t *)    -1,1,-1
-int           sendmsg:socketcall:16(int, const struct msghdr *, unsigned int)  -1,1,-1
-int           recvmsg:socketcall:17(int, struct msghdr *, unsigned int)   -1,1,-1
+int           socket:socketcall:1 (int, int, int) -1,102,-1
+int           bind:socketcall:2 (int, struct sockaddr *, int)  -1,102,-1
+int           connect:socketcall:3(int, struct sockaddr *, socklen_t)   -1,102,-1
+int           listen:socketcall:4(int, int)                   -1,102,-1
+int           accept:socketcall:5(int, struct sockaddr *, socklen_t *)  -1,102,-1
+int           getsockname:socketcall:6(int, struct sockaddr *, socklen_t *)  -1,102,-1
+int           getpeername:socketcall:7(int, struct sockaddr *, socklen_t *)  -1,102,-1
+int           socketpair:socketcall:8(int, int, int, int*)    -1,102,-1
+int           sendto:socketcall:11(int, const void *, size_t, int, const struct sockaddr *, socklen_t)  -1,102,-1
+int           recvfrom:socketcall:12(int, void *, size_t, unsigned int, struct sockaddr *, socklen_t *)  -1,102,-1
+int           shutdown:socketcall:13(int, int)  -1,102,-1
+int           setsockopt:socketcall:14(int, int, int, const void *, socklen_t)  -1,102,-1
+int           getsockopt:socketcall:15(int, int, int, void *, socklen_t *)    -1,102,-1
+int           sendmsg:socketcall:16(int, const struct msghdr *, unsigned int)  -1,102,-1
+int           recvmsg:socketcall:17(int, struct msghdr *, unsigned int)   -1,102,-1
+
+# sockets for sh.
+int           __socketcall:__socketcall(int, unsigned long*) -1,-1,102
 
 # scheduler & real-time
-int sched_setscheduler(pid_t pid, int policy, const struct sched_param *param)  1
-int sched_getscheduler(pid_t pid)  1
-int sched_yield(void)  1
-int sched_setparam(pid_t pid, const struct sched_param *param)  1
-int sched_getparam(pid_t pid, struct sched_param *param)  1
-int sched_get_priority_max(int policy)  1
-int sched_get_priority_min(int policy)  1
-int sched_rr_get_interval(pid_t pid, struct timespec *interval)  1
-int sched_setaffinity(pid_t pid, size_t setsize, const cpu_set_t* set) 1
-int __sched_getaffinity:sched_getaffinity(pid_t pid, size_t setsize, cpu_set_t* set)  1
-int __getcpu:getcpu(unsigned *cpu, unsigned *node, void *unused) 1
+int sched_setscheduler(pid_t pid, int policy, const struct sched_param *param)  156
+int sched_getscheduler(pid_t pid)  157
+int sched_yield(void)  158
+int sched_setparam(pid_t pid, const struct sched_param *param)  154
+int sched_getparam(pid_t pid, struct sched_param *param)  155
+int sched_get_priority_max(int policy)  159
+int sched_get_priority_min(int policy)  160
+int sched_rr_get_interval(pid_t pid, struct timespec *interval)  161
 
 # io priorities
-int ioprio_set(int which, int who, int ioprio) 1
-int ioprio_get(int which, int who) 1
+int ioprio_set(int which, int who, int ioprio) 314,289,288
+int ioprio_get(int which, int who) 315,290,289
 
 # other
-int     uname(struct utsname *)  1
-mode_t  umask(mode_t)  1
-int      __reboot:reboot(int, int, int, void *)  1
-int     __syslog:syslog(int, char *, int)  1
-int     init_module(void *, unsigned long, const char *)  1
-int     delete_module(const char*, unsigned int)   1
-int     klogctl:syslog(int, char *, int)   1
-int     sysinfo(struct sysinfo *)  1
-int     personality(unsigned long)  1
-long    perf_event_open(struct perf_event_attr *attr_uptr, pid_t pid, int cpu, int group_fd, unsigned long flags) 1
+int     uname(struct utsname *)  122
+pid_t   __wait4:wait4(pid_t pid, int *status, int options, struct rusage *rusage)   114
+mode_t  umask(mode_t)  60
+int      __reboot:reboot(int, int, int, void *)  88
+int     __syslog:syslog(int, char *, int)  103
+int     init_module(void *, unsigned long, const char *)  128
+int     delete_module(const char*, unsigned int)   129
+int     klogctl:syslog(int, char *, int)   103
+int     sysinfo(struct sysinfo *)  116
 
 # futex
-int	futex(void *, int, int, void *, void *, int) 1
+int	futex(void *, int, int, void *, void *, int) 240
 
 # epoll
-int     epoll_create(int size)     1
-int     epoll_ctl(int epfd, int op, int fd, struct epoll_event *event)    1
-int     epoll_wait(int epfd, struct epoll_event *events, int max, int timeout)   1
+int     epoll_create(int size)     250,254
+int     epoll_ctl(int epfd, int op, int fd, struct epoll_event *event)    251,255
+int     epoll_wait(int epfd, struct epoll_event *events, int max, int timeout)   252,256
 
-int     inotify_init(void)      1
-int     inotify_add_watch(int, const char *, unsigned int)  1
-int     inotify_rm_watch(int, unsigned int)  1
+int     inotify_init(void)      316,291,290
+int     inotify_add_watch(int, const char *, unsigned int)  317,292,291
+int     inotify_rm_watch(int, unsigned int)  318,293,292
 
-int     poll(struct pollfd *, unsigned int, long)  1
+int     poll(struct pollfd *, unsigned int, long)  168
 
-int     eventfd:eventfd2(unsigned int, int)  1
+int     eventfd:eventfd2(unsigned int, int)  356,328
 
 # ARM-specific ARM_NR_BASE == 0x0f0000 == 983040
-int     __set_tls:__ARM_NR_set_tls(void*)                                 1,-1,-1
-int     cacheflush:__ARM_NR_cacheflush(long start, long end, long flags)  1,-1,-1
-
-# MIPS-specific
-int     _flush_cache:cacheflush(char *addr, const int nbytes, const int op) -1,-1,1
-int     syscall(int number,...) -1,-1,1
+int     __set_tls:ARM_set_tls(void*)                                 983045,-1
+int     cacheflush:ARM_cacheflush(long start, long end, long flags)  983042,-1

libc/arch-arm/arm.mk

@@ -1,44 +0,0 @@
-_LIBC_ARCH_COMMON_SRC_FILES := \
-    arch-arm/bionic/abort_arm.S \
-    arch-arm/bionic/atomics_arm.c \
-    arch-arm/bionic/clone.S \
-    arch-arm/bionic/eabi.c \
-    arch-arm/bionic/_exit_with_stack_teardown.S \
-    arch-arm/bionic/ffs.S \
-    arch-arm/bionic/futex_arm.S \
-    arch-arm/bionic/__get_sp.S \
-    arch-arm/bionic/kill.S \
-    arch-arm/bionic/libgcc_compat.c \
-    arch-arm/bionic/memcmp16.S \
-    arch-arm/bionic/memcmp.S \
-    arch-arm/bionic/_setjmp.S \
-    arch-arm/bionic/setjmp.S \
-    arch-arm/bionic/sigsetjmp.S \
-    arch-arm/bionic/syscall.S \
-    arch-arm/bionic/tgkill.S \
-    arch-arm/bionic/tkill.S \
-
-# These are used by the static and dynamic versions of the libc
-# respectively.
-_LIBC_ARCH_STATIC_SRC_FILES := \
-    arch-arm/bionic/exidx_static.c
-
-_LIBC_ARCH_DYNAMIC_SRC_FILES := \
-    arch-arm/bionic/exidx_dynamic.c
-
-# Remove the C++ fortify function implementations for which there is an
-# arm assembler version.
-_LIBC_FORTIFY_FILES_TO_REMOVE := \
-    bionic/__memcpy_chk.cpp \
-    bionic/__memset_chk.cpp \
-    bionic/__strcpy_chk.cpp \
-    bionic/__strcat_chk.cpp \
-
-libc_common_src_files := \
-    $(filter-out $(_LIBC_FORTIFY_FILES_TO_REMOVE),$(libc_common_src_files))
-
-ifeq ($(strip $(wildcard bionic/libc/arch-arm/$(TARGET_CPU_VARIANT)/$(TARGET_CPU_VARIANT).mk)),)
-$(error "TARGET_CPU_VARIANT not set or set to an unknown value. Possible values are cortex-a7, cortex-a8, cortex-a9, cortex-a15, krait. Use generic for devices that do not have a CPU similar to any of the supported cpu variants.")
-endif
-
-include bionic/libc/arch-arm/$(TARGET_CPU_VARIANT)/$(TARGET_CPU_VARIANT).mk

libc/arch-arm/bionic/__get_pc.S

@@ -25,9 +25,10 @@
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
+.global __get_pc
+.type __get_pc, %function
 
-#include "pthread_internal.h"
+__get_pc:
+	mov r0, pc
+	bx lr
 
-pthread_t pthread_self() {
-  return reinterpret_cast<pthread_t>(__get_thread());
-}

libc/arch-arm/bionic/__get_sp.S

@@ -25,10 +25,10 @@
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
+.global __get_sp
+.type __get_sp, %function
 
-#include <machine/asm.h>
+__get_sp:
+	mov r0, sp
+	bx lr
 
-ENTRY(__get_sp)
-  mov r0, sp
-  bx lr
-END(__get_sp)

libc/arch-arm/bionic/_exit_with_stack_teardown.S

@@ -25,20 +25,31 @@
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
-
-#include <machine/asm.h>
 #include <asm/unistd.h>
 
-// void _exit_with_stack_teardown(void* stackBase, int stackSize, int retCode)
-ENTRY(_exit_with_stack_teardown)
+.text
+.type _exit_with_stack_teardown, #function
+.globl _exit_with_stack_teardown
+.align 4
+
+@ void _exit_with_stack_teardown(void * stackBase, int stackSize, int retCode)
+
+_exit_with_stack_teardown:
+
+#if __ARM_EABI__
     mov     lr, r2
     ldr     r7, =__NR_munmap
-    swi     #0              // the stack is destroyed by this call
+    swi     #0              @ the stack is destroyed by this call
     mov     r0, lr
     ldr     r7, =__NR_exit
     swi     #0
+#else
+    mov     lr, r2
+    swi     # __NR_munmap   @ the stack is destroyed by this call
+    mov     r0, lr
+    swi     # __NR_exit
+#endif
 
-    // exit() should never return, cause a crash if it does
-    mov     r0, #0
-    ldr     r0, [r0]
-END(_exit_with_stack_teardown)
+    @ exit() should never return, cause a crash if it does
+    mov		r0, #0
+    ldr		r0, [r0]

libc/arch-arm/bionic/_setjmp.S

@@ -70,7 +70,6 @@ ENTRY(_setjmp)
 
         mov	r0, #0x00000000
         bx      lr
-END(_setjmp)
 
 .L_setjmp_magic:
 	.word	_JB_MAGIC__SETJMP
@@ -110,4 +109,3 @@ botch:
 	bl	PIC_SYM(_C_LABEL(longjmperror), PLT)
 	bl	PIC_SYM(_C_LABEL(abort), PLT)
 	b	. - 8		/* Cannot get here */
-END(_longjmp)

libc/arch-arm/bionic/abort_arm.S

@@ -1,42 +0,0 @@
-/*
- * Copyright (C) 2012 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <machine/asm.h>
-
-/*
- * Coding the abort function in assembly so that registers are guaranteed to
- * be preserved properly regardless of GCC's assumption on the "noreturn"
- * attribute. When the registers are not properly preserved we won't be able
- * to unwind the stack all the way to the bottom to fully reveal the call
- * sequence when the crash happens.
- */
-ENTRY(abort)
-    .save   {r3, r14}
-    stmfd   sp!, {r3, r14}
-    bl      PIC_SYM(_C_LABEL(__libc_android_abort), PLT)
-END(abort)

libc/arch-arm/bionic/atexit.S

@@ -25,8 +25,45 @@
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
-#ifndef _NET_ETHERNET_H_
-#define _NET_IF_ETHERNET_H_
-#include <linux/if_ether.h>
-#include <net/if_ether.h>
-#endif /* !_NET_ETHERNET_H_ */
+
+#ifndef CRT_LEGACY_WORKAROUND
+	.arch armv5te
+	.fpu softvfp
+	.eabi_attribute 20, 1
+	.eabi_attribute 21, 1
+	.eabi_attribute 23, 3
+	.eabi_attribute 24, 1
+	.eabi_attribute 25, 1
+	.eabi_attribute 26, 2
+	.eabi_attribute 30, 4
+	.eabi_attribute 18, 4
+	.code	16
+	.section	.text.atexit,"ax",%progbits
+	.align	2
+	.global	atexit
+	.hidden	atexit
+	.code	16
+	.thumb_func
+	.type	atexit, %function
+atexit:
+	.fnstart
+.LFB0:
+	.save	{r4, lr}
+	push	{r4, lr}
+.LCFI0:
+	ldr	r3, .L3
+	mov	r1, #0
+	@ sp needed for prologue
+.LPIC0:
+	add	r3, pc
+	ldr	r2, [r3]
+	bl	__cxa_atexit
+	pop	{r4, pc}
+.L4:
+	.align	2
+.L3:
+	.word	__dso_handle-(.LPIC0+4)
+.LFE0:
+	.fnend
+	.size	atexit, .-atexit
+#endif

libc/arch-arm/bionic/atexit.h

@@ -1,35 +0,0 @@
-/*
- * Copyright (C) 2012 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-extern void *__dso_handle;
-
-__attribute__ ((visibility ("hidden")))
-int atexit(void (*func)(void))
-{
-  return (__cxa_atexit((void (*)(void *))func, (void *)0, &__dso_handle));
-}

libc/arch-arm/bionic/atomics_arm.S

@@ -0,0 +1,251 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <sys/linux-syscalls.h>
+#include <machine/cpu-features.h>
+
+.global __atomic_cmpxchg
+.type __atomic_cmpxchg, %function
+.global __atomic_swap
+.type __atomic_swap, %function
+.global __atomic_dec
+.type __atomic_dec, %function
+.global __atomic_inc
+.type __atomic_inc, %function
+
+#define FUTEX_WAIT 0
+#define FUTEX_WAKE 1
+
+#if defined(__ARM_HAVE_LDREX_STREX)
+/*
+ * ===========================================================================
+ *      ARMv6+ implementation
+ * ===========================================================================
+ */
+
+/* r0(addr) -> r0(old) */
+__atomic_dec:
+    .fnstart
+    mov     r1, r0                      @ copy addr so we don't clobber it
+1:  ldrex   r0, [r1]                    @ load current value into r0
+    sub     r2, r0, #1                  @ generate new value into r2
+    strex   r3, r2, [r1]                @ try to store new value; result in r3
+    cmp     r3, #0                      @ success?
+    bxeq    lr                          @ yes, return
+    b       1b                          @ no, retry
+    .fnend
+
+/* r0(addr) -> r0(old) */
+__atomic_inc:
+    .fnstart
+    mov     r1, r0
+1:  ldrex   r0, [r1]
+    add     r2, r0, #1
+    strex   r3, r2, [r1]
+    cmp     r3, #0
+    bxeq    lr
+    b       1b
+    .fnend
+
+/* r0(old) r1(new) r2(addr) -> r0(zero_if_succeeded) */
+__atomic_cmpxchg:
+    .fnstart
+1:  mov     ip, #2                      @ ip=2 means "new != old"
+    ldrex   r3, [r2]                    @ load current value into r3
+    teq     r0, r3                      @ new == old?
+    strexeq ip, r1, [r2]                @ yes, try store, set ip to 0 or 1
+    teq     ip, #1                      @ strex failure?
+    beq     1b                          @ yes, retry
+    mov     r0, ip                      @ return 0 on success, 2 on failure
+    bx      lr
+    .fnend
+
+/* r0(new) r1(addr) -> r0(old) */
+__atomic_swap:
+    .fnstart
+1:  ldrex   r2, [r1]
+    strex   r3, r0, [r1]
+    teq     r3, #0
+    bne     1b
+    mov     r0, r2
+    bx      lr
+    .fnend
+
+#else /*not defined __ARM_HAVE_LDREX_STREX*/
+/*
+ * ===========================================================================
+ *      Pre-ARMv6 implementation
+ * ===========================================================================
+ */
+
+    /* int __kernel_cmpxchg(int oldval, int newval, int* ptr) */
+    .equ    kernel_cmpxchg, 0xFFFF0FC0
+    .equ    kernel_atomic_base, 0xFFFF0FFF
+
+/* r0(addr) -> r0(old) */
+__atomic_dec:
+    .fnstart
+    .save {r4, lr}
+    stmdb   sp!, {r4, lr}
+    mov     r2, r0
+1: @ atomic_dec
+    ldr     r0, [r2]
+    mov     r3, #kernel_atomic_base
+    add     lr, pc, #4
+    sub     r1, r0, #1
+    add     pc, r3, #(kernel_cmpxchg - kernel_atomic_base)
+    bcc     1b
+    add     r0, r1, #1
+    ldmia   sp!, {r4, lr}
+    bx      lr
+    .fnend
+
+/* r0(addr) -> r0(old) */
+__atomic_inc:
+    .fnstart
+    .save {r4, lr}
+    stmdb   sp!, {r4, lr}
+    mov     r2, r0
+1: @ atomic_inc
+    ldr     r0, [r2]
+    mov     r3, #kernel_atomic_base
+    add     lr, pc, #4
+    add     r1, r0, #1
+    add     pc, r3, #(kernel_cmpxchg - kernel_atomic_base)
+    bcc     1b
+    sub     r0, r1, #1
+    ldmia   sp!, {r4, lr}
+    bx      lr
+    .fnend
+
+/* r0(old) r1(new) r2(addr) -> r0(zero_if_succeeded) */
+__atomic_cmpxchg:
+    .fnstart
+    .save {r4, lr}
+    stmdb   sp!, {r4, lr}
+    mov     r4, r0          /* r4 = save oldvalue */
+1: @ atomic_cmpxchg
+    mov     r3, #kernel_atomic_base
+    add     lr, pc, #4
+    mov     r0, r4          /* r0 = oldvalue */
+    add     pc, r3, #(kernel_cmpxchg - kernel_atomic_base)
+    bcs     2f              /* swap was made. we're good, return. */
+    ldr     r3, [r2]        /* swap not made, see if it's because *ptr!=oldvalue */
+    cmp     r3, r4
+    beq     1b
+2: @ atomic_cmpxchg
+    ldmia   sp!, {r4, lr}
+    bx      lr
+    .fnend
+
+/* r0(new) r1(addr) -> r0(old) */
+__atomic_swap:
+    .fnstart
+    swp     r0, r0, [r1]
+    bx      lr
+    .fnend
+
+#endif /*not defined __ARM_HAVE_LDREX_STREX*/
+
+
+/* __futex_wait(*ftx, val, *timespec) */
+/* __futex_wake(*ftx, counter) */
+/* __futex_syscall3(*ftx, op, val) */
+/* __futex_syscall4(*ftx, op, val, *timespec) */
+
+.global __futex_wait
+.type __futex_wait, %function
+
+.global __futex_wake
+.type __futex_wake, %function
+
+.global __futex_syscall3
+.type __futex_syscall3, %function
+
+.global __futex_syscall4
+.type __futex_syscall4, %function
+
+#if __ARM_EABI__
+
+__futex_syscall3:
+    .fnstart
+    stmdb   sp!, {r4, r7}
+    .save   {r4, r7}
+    ldr     r7, =__NR_futex
+    swi     #0
+    ldmia   sp!, {r4, r7}
+    bx      lr
+    .fnend
+
+__futex_wait:
+    .fnstart
+    stmdb   sp!, {r4, r7}
+    .save   {r4, r7}
+    mov     r3, r2
+    mov     r2, r1
+    mov     r1, #FUTEX_WAIT
+    ldr     r7, =__NR_futex
+    swi     #0
+    ldmia   sp!, {r4, r7}
+    bx      lr
+    .fnend
+
+__futex_wake:
+    .fnstart
+    .save   {r4, r7}
+    stmdb   sp!, {r4, r7}
+    mov     r2, r1
+    mov     r1, #FUTEX_WAKE
+    ldr     r7, =__NR_futex
+    swi     #0
+    ldmia   sp!, {r4, r7}
+    bx      lr
+    .fnend
+
+#else
+
+__futex_syscall3:
+    swi     #__NR_futex
+    bx      lr
+
+__futex_wait:
+    mov     r3, r2
+    mov     r2, r1
+    mov     r1, #FUTEX_WAIT
+    swi     #__NR_futex
+    bx      lr
+
+__futex_wake:
+    mov     r2, r1
+    mov     r1, #FUTEX_WAKE
+    swi     #__NR_futex
+    bx      lr
+
+#endif
+
+__futex_syscall4:
+    b __futex_syscall3

libc/arch-arm/bionic/atomics_arm.c

@@ -1,87 +0,0 @@
-/*
- * Copyright (C) 2011 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-
-/* The purpose of this file is to export a small set of atomic-related
- * functions from the C library, to ensure binary ABI compatibility for
- * the NDK.
- *
- * These functions were initially exposed by the NDK through <sys/atomics.h>,
- * which was unfortunate because their implementation didn't provide any
- * memory barriers at all.
- *
- * This wasn't a problem for the platform code that used them, because it
- * used explicit barrier instructions around them. On the other hand, it means
- * that any NDK-generated machine code that linked against them would not
- * perform correctly when running on multi-core devices.
- *
- * To fix this, the platform code was first modified to not use any of these
- * functions (everything is now inlined through assembly statements, see
- * libc/private/bionic_arm_inline.h and the headers it includes.
- *
- * The functions here are thus only for the benefit of NDK applications,
- * and now includes full memory barriers to prevent any random memory ordering
- * issue from cropping.
- *
- * Note that we also provide an updated <sys/atomics.h> header that defines
- * always_inlined versions of the functions that use the GCC builtin
- * intrinsics to perform the same thing.
- *
- * NOTE: There is no need for a similar file for non-ARM platforms.
- */
-
-/* DO NOT INCLUDE <sys/atomics.h> HERE ! */
-
-int
-__atomic_cmpxchg(int old, int _new, volatile int *ptr)
-{
-    /* We must return 0 on success */
-    return __sync_val_compare_and_swap(ptr, old, _new) != old;
-}
-
-int
-__atomic_swap(int _new, volatile int *ptr)
-{
-    int prev;
-    do {
-        prev = *ptr;
-    } while (__sync_val_compare_and_swap(ptr, prev, _new) != prev);
-    return prev;
-}
-
-int
-__atomic_dec(volatile int *ptr)
-{
-  return __sync_fetch_and_sub (ptr, 1);
-}
-
-int
-__atomic_inc(volatile int *ptr)
-{
-  return __sync_fetch_and_add (ptr, 1);
-}

libc/arch-arm/bionic/clone.S

@@ -25,43 +25,55 @@
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
+#include <sys/linux-syscalls.h>
 
-#include <linux/err.h>
-#include <machine/asm.h>
-#include <asm/unistd.h>
+    .text
+    .type __pthread_clone, #function
+    .global __pthread_clone
+    .align 4
+    .fnstart
 
-// int  __pthread_clone(void* (*fn)(void*), void* child_stack, int flags, void* arg);
-ENTRY(__pthread_clone)
-    # Push 'fn' and 'arg' onto 'child_stack'.
-    stmdb   r1!, {r0, r3}
+__pthread_clone:
+    @ insert the args onto the new stack
+    str     r0, [r1, #-4]
+    str     r3, [r1, #-8]
+
+    @ do the system call
+    @ get flags
 
-    # The sys_clone system call only takes two arguments: 'flags' and 'child_stack'.
-    # 'child_stack' is already in r1, but we need to move 'flags' into position.
     mov     r0, r2
 
-    # System call.
-    mov     ip, r7
+    @ new sp is already in r1
+
+#if __ARM_EABI__
+    stmfd   sp!, {r4, r7}
     ldr     r7, =__NR_clone
     swi     #0
+#else
+    swi     #__NR_clone
+#endif
 
-    # Child?
     movs    r0, r0
-    beq     1f
+#if __ARM_EABI__
+    ldmnefd sp!, {r4, r7}
+#endif
+    blt     __error
+    bxne    lr
 
-    # Parent.
-    mov     r7, ip
-    cmn     r0, #(MAX_ERRNO + 1)
-    bxls    lr
-    neg     r0, r0
-    b       __set_errno
 
-1:  # Child.
-    # Pop 'fn' and 'arg' back off the stack and call __thread_entry.
-    pop     {r0, r1}
-    # __thread_entry also needs our stack pointer.
-    mov     r2, sp
+    @ pick the function arg and call address off the stack and jump
+    @ to the C __thread_entry function which does some setup and then
+    @ calls the thread's start function
+
+    ldr     r0, [sp, #-4]
+    ldr     r1, [sp, #-8]
+    mov     r2, sp			@ __thread_entry needs the TLS pointer
     b       __thread_entry
-END(__pthread_clone)
+
+__error:
+    mov     r0, #-1
+    bx      lr
+    .fnend
 
 
     #
@@ -71,13 +83,17 @@ END(__pthread_clone)
     #                          pid_t *pid, void *tls, pid_t *ctid,
     #                          int  (*fn)(void *), void* arg );
     #
-    # NOTE: This is not the same signature as the glibc
-    #       __clone function. Placing 'fn' and 'arg'
+    # NOTE: This is not the same signature than the GLibc
+    #       __clone function here !! Placing 'fn' and 'arg'
     #       at the end of the parameter list makes the
     #       implementation much simpler.
     #
+    .type __bionic_clone, #function
+    .globl __bionic_clone
+    .align 4
+    .fnstart
 
-ENTRY(__bionic_clone)
+__bionic_clone:
     mov     ip, sp
     .save   {r4, r5, r6, r7}
 
@@ -91,21 +107,22 @@ ENTRY(__bionic_clone)
     str     r5, [r1, #-4]
     str     r6, [r1, #-8]
 
-    # System call
+    # system call
     ldr     r7, =__NR_clone
     swi     #0
     movs    r0, r0
     beq     1f
 
-    # In the parent, reload saved registers then either return or set errno.
+    # in parent, reload saved registers
+    # then either exit or error
+    #
     ldmfd   sp!, {r4, r5, r6, r7}
-    cmn     r0, #(MAX_ERRNO + 1)
-    bxls    lr
-    neg     r0, r0
-    b       __set_errno
+    bxne    lr
+    b       __set_syscall_errno
 
-1:  # The child.
+1:  # in the child - pick arguments
     ldr    r0, [sp, #-4]
     ldr    r1, [sp, #-8]
     b      __bionic_clone_entry
-END(__bionic_clone)
+
+    .fnend

libc/arch-arm/bionic/crtbegin.c

@@ -1,53 +0,0 @@
-/*
- * Copyright (C) 2012 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include "../../bionic/libc_init_common.h"
-#include <stddef.h>
-#include <stdint.h>
-
-__attribute__ ((section (".preinit_array")))
-void (*__PREINIT_ARRAY__)(void) = (void (*)(void)) -1;
-
-__attribute__ ((section (".init_array")))
-void (*__INIT_ARRAY__)(void) = (void (*)(void)) -1;
-
-__attribute__ ((section (".fini_array")))
-void (*__FINI_ARRAY__)(void) = (void (*)(void)) -1;
-
-__LIBC_HIDDEN__ void _start() {
-  structors_array_t array;
-  array.preinit_array = &__PREINIT_ARRAY__;
-  array.init_array = &__INIT_ARRAY__;
-  array.fini_array = &__FINI_ARRAY__;
-
-  void* raw_args = (void*) ((uintptr_t) __builtin_frame_address(0) + sizeof(void*));
-  __libc_init(raw_args, NULL, &main, &array);
-}
-
-#include "__dso_handle.h"
-#include "atexit.h"

libc/arch-arm/bionic/crtbegin_dynamic.S

@@ -26,30 +26,63 @@
  * SUCH DAMAGE.
  */
 	.text
+	.align 4
+	.type _start,#function
+	.globl _start
 
-/*
- * u4 __memcmp16(const u2* s0, const u2* s1, size_t count);
- */
-	.type	__memcmp16, @function
-	.global	__memcmp16
-	.align	4
-	.ent __memcmp16
-__memcmp16:
-	li	$t0,0
-	li	$t1,0
-	beqz	$a2,done		/* 0 length string */ 
-	beq	$a0,$a1,done		/* strings are identical */
+# this is the small startup code that is first run when
+# any executable that is dynamically-linked with Bionic
+# runs.
+#
+# it's purpose is to call __libc_init with appropriate
+# arguments, which are:
+#
+#    - the address of the raw data block setup by the Linux
+#      kernel ELF loader
+#
+#    - address of an "onexit" function, not used on any
+#      platform supported by Bionic
+#
+#    - address of the "main" function of the program. We
+#      can't hard-code it in the adr pseudo instruction
+#      so we use a tiny trampoline that will get relocated
+#      by the dynamic linker before this code runs
+#
+#    - address of the constructor list
+#
+_start:	
+	mov	r0, sp
+	mov	r1, #0
+	adr r2, 0f
+	adr r3, 1f
+	b	__libc_init
 
-	/* Unoptimised... */
-1:	lhu	$t0,0($a0)
-	lhu	$t1,0($a1)
-	addu	$a1,2
-	bne	$t0,$t1,done
-	addu	$a0,2
-	subu	$a2,1
-	bnez	$a2,1b
+0:  b   main
 
-done:
-	subu	$v0,$t0,$t1
-	j	$ra
-        .end __memcmp16
+1:  .long   __PREINIT_ARRAY__
+    .long   __INIT_ARRAY__
+    .long   __FINI_ARRAY__
+    .long   __CTOR_LIST__
+
+	.section .preinit_array, "aw"
+	.globl __PREINIT_ARRAY__
+__PREINIT_ARRAY__:
+	.long -1
+
+	.section .init_array, "aw"
+	.globl __INIT_ARRAY__
+__INIT_ARRAY__:
+	.long -1
+
+	.section .fini_array, "aw"
+	.globl __FINI_ARRAY__
+__FINI_ARRAY__:
+	.long -1
+
+	.section .ctors, "aw"
+	.globl __CTOR_LIST__
+__CTOR_LIST__:
+	.long -1
+
+#include "__dso_handle.S"
+#include "atexit.S"

libc/arch-arm/bionic/crtbegin_so.S

@@ -25,12 +25,37 @@
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
-#ifndef _SYS_CACHECTL_H
-#define _SYS_CACHECTL_H 1
 
-#ifdef __mips__
-#include <asm/cachectl.h>
-extern int __cachectl (void *addr, __const int nbytes, __const int op);
-extern int _flush_cache (char *addr, __const int nbytes, __const int op);
+# Implement static C++ destructors when the shared
+# library is unloaded through dlclose().
+#
+# A call to this function must be the first entry
+# in the .fini_array. See 3.3.5.3.C of C++ ABI
+# standard.
+#
+__on_dlclose:
+        adr     r0, 0f
+        ldr     r0, [r0]
+        b       __cxa_finalize
+
+0:
+        .long   __dso_handle
+
+	.section .init_array, "aw"
+	.globl __INIT_ARRAY__
+__INIT_ARRAY__:
+	.long -1
+
+        .section .fini_array, "aw"
+        .globl __FINI_ARRAY__
+__FINI_ARRAY__:
+        .long -1
+        .long __on_dlclose
+
+#ifdef CRT_LEGACY_WORKAROUND
+#include "__dso_handle.S"
+#else
+#include "__dso_handle_so.S"
 #endif
-#endif /* sys/cachectl.h */
+
+#include "atexit.S"

libc/arch-arm/bionic/crtbegin_so.c

@@ -1,58 +0,0 @@
-/*
- * Copyright (C) 2012 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-extern void __cxa_finalize(void *);
-extern void *__dso_handle;
-
-__attribute__((visibility("hidden"),destructor))
-void __on_dlclose() {
-  __cxa_finalize(&__dso_handle);
-}
-
-/* CRT_LEGACY_WORKAROUND should only be defined when building
- * this file as part of the platform's C library.
- *
- * The C library already defines a function named 'atexit()'
- * for backwards compatibility with older NDK-generated binaries.
- *
- * For newer ones, 'atexit' is actually embedded in the C
- * runtime objects that are linked into the final ELF
- * binary (shared library or executable), and will call
- * __cxa_atexit() in order to un-register any atexit()
- * handler when a library is unloaded.
- *
- * This function must be global *and* hidden. Only the
- * code inside the same ELF binary should be able to access it.
- */
-
-#ifdef CRT_LEGACY_WORKAROUND
-#include "__dso_handle.h"
-#else
-#include "__dso_handle_so.h"
-#include "atexit.h"
-#endif

libc/arch-arm/bionic/crtbegin_static.S

@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+	.text
+	.align 4
+	.type _start,#function
+	.globl _start
+
+# this is the small startup code that is first run when
+# any executable that is statically-linked with Bionic
+# runs.
+#
+# it's purpose is to call __libc_init with appropriate
+# arguments, which are:
+#
+#    - the address of the raw data block setup by the Linux
+#      kernel ELF loader
+#
+#    - address of an "onexit" function, not used on any
+#      platform supported by Bionic
+#
+#    - address of the "main" function of the program. We
+#      can't hard-code it in the adr pseudo instruction
+#      so we use a tiny trampoline that will get relocated
+#      by the dynamic linker before this code runs
+#
+#    - address of the constructor list
+#
+_start:	
+	mov	r0, sp
+	mov	r1, #0
+	adr r2, 0f
+	adr r3, 1f
+	b	__libc_init
+
+0:  b   main
+
+1:  .long   __PREINIT_ARRAY__
+    .long   __INIT_ARRAY__
+    .long   __FINI_ARRAY__
+    .long   __CTOR_LIST__
+
+	.section .preinit_array, "aw"
+	.globl __PREINIT_ARRAY__
+__PREINIT_ARRAY__:
+	.long -1
+
+	.section .init_array, "aw"
+	.globl __INIT_ARRAY__
+__INIT_ARRAY__:
+	.long -1
+
+	.section .fini_array, "aw"
+	.globl __FINI_ARRAY__
+__FINI_ARRAY__:
+	.long -1
+
+	.section .ctors, "aw"
+	.globl __CTOR_LIST__
+__CTOR_LIST__:
+	.long -1
+
+
+#include "__dso_handle.S"
+#include "atexit.S"

libc/arch-arm/bionic/crtend.S

@@ -35,6 +35,6 @@
 	.section .fini_array, "aw"
 	.long 0
 
-#if defined(__linux__) && defined(__ELF__)
-	.section .note.GNU-stack,"",%progbits
-#endif
+	.section .ctors, "aw"
+	.long 0
+

libc/arch-arm/bionic/crtend_so.S

@@ -26,6 +26,13 @@
  * SUCH DAMAGE.
  */
 
-#if defined(__linux__) && defined(__ELF__)
-	.section .note.GNU-stack,"",%progbits
-#endif
+/* This is the same than crtend.S except that a shared library
+ * cannot have a .preinit_array
+ */
+	
+	.section .init_array, "aw"
+	.long 0
+
+	.section .fini_array, "aw"
+	.long 0
+

libc/arch-arm/bionic/eabi.c

@@ -30,6 +30,22 @@
 
 extern int  __cxa_atexit(void (*)(void*), void*, void* );
 
+/* Temporary hack: this variable should not be part of the C library
+ * itself, but placed in the .bss section of each executable or
+ * shared library instead.
+ *
+ * We keep it here temporarily until the build system has been
+ * modified properly to use crtbegin_so.S and crtend_so.S when
+ * generating shared libraries.
+ *
+ * It must be a 'weak' symbol to avoid conflicts with the definitions
+ * that have been moved to crtbegin_static.S and crtbegin_dynamic.S
+ *
+ * For the record, it is used for static C++ object construction
+ * and destruction. See http://www.codesourcery.com/public/cxx-abi/abi.html#dso-dtor
+ */
+void* __attribute__((weak)) __dso_handle;
+
 /* The "C++ ABI for ARM" document states that static C++ constructors,
  * which are called from the .init_array, should manually call
  * __aeabi_atexit() to register static destructors explicitely.

libc/arch-arm/bionic/exidx_dynamic.c

@@ -25,8 +25,12 @@
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
+typedef long unsigned int *_Unwind_Ptr;
 
-#include <link.h>
+/* Stubbed out in libdl and defined in the dynamic linker.
+ * Same semantics as __gnu_Unwind_Find_exidx().
+ */
+extern _Unwind_Ptr dl_unwind_find_exidx(_Unwind_Ptr pc, int *pcount);
 
 /* For a given PC, find the .so that it belongs to.
  * Returns the base address of the .ARM.exidx section

libc/arch-arm/bionic/exidx_static.c

@@ -25,8 +25,7 @@
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
-
-#include <link.h>
+typedef long unsigned int *_Unwind_Ptr;
 
 /* Find the .ARM.exidx section (which in the case of a static executable
  * can be identified through its start and end symbols), and return its

libc/arch-arm/bionic/ffs.S

@@ -29,13 +29,54 @@
  */
 
 #include <machine/asm.h>
-#include <machine/cpu-features.h>
+
+/*
+ * ffs - find first set bit, this algorithm isolates the first set
+ * bit, then multiplies the number by 0x0450fbaf which leaves the top
+ * 6 bits as an index into the table.  This algorithm should be a win
+ * over the checking each bit in turn as per the C compiled version.
+ *
+ * under ARMv5 there's an instruction called CLZ (count leading Zero's) that
+ * could be used
+ *
+ * This is the ffs algorithm devised by d.seal and posted to comp.sys.arm on
+ * 16 Feb 1994.
+ */
 
 ENTRY(ffs)
 	/* Standard trick to isolate bottom bit in r0 or 0 if r0 = 0 on entry */
  	rsb     r1, r0, #0
  	ands    r0, r0, r1
+#ifndef __ARM_ARCH_5__
+	/*
+	 * now r0 has at most one set bit, call this X
+	 * if X = 0, all further instructions are skipped
+	 */
+	adrne   r2, .L_ffs_table
+	orrne   r0, r0, r0, lsl #4  /* r0 = X * 0x11 */ 
+	orrne   r0, r0, r0, lsl #6  /* r0 = X * 0x451 */
+	rsbne   r0, r0, r0, lsl #16 /* r0 = X * 0x0450fbaf */
+              
+	/* now lookup in table indexed on top 6 bits of r0 */
+	ldrneb  r0, [ r2, r0, lsr #26 ]
+
+	bx		lr
+
+.text;
+.type .L_ffs_table, _ASM_TYPE_OBJECT;
+.L_ffs_table:
+/*               0   1   2   3   4   5   6   7           */
+	.byte	 0,  1,  2, 13,  3,  7,  0, 14  /*  0- 7 */
+	.byte	 4,  0,  8,  0,  0,  0,  0, 15  /*  8-15 */
+	.byte	11,  5,  0,  0,  9,  0,  0, 26  /* 16-23 */
+	.byte	 0,  0,  0,  0,  0, 22, 28, 16  /* 24-31 */
+	.byte	32, 12,  6,  0,  0,  0,  0,  0	/* 32-39 */
+	.byte	10,  0,  0, 25,  0,  0, 21, 27  /* 40-47 */
+	.byte	31,  0,  0,  0,  0, 24,  0, 20  /* 48-55 */
+	.byte   30,  0, 23, 19, 29, 18, 17,  0  /* 56-63 */
+#else
 	clzne	r0, r0
 	rsbne	r0, r0, #32
 	bx		lr
-END(ffs)
+#endif
+

libc/arch-arm/bionic/kill.S

@@ -25,11 +25,6 @@
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
-
-#include <linux/err.h>
-#include <asm/unistd.h>
-#include <machine/asm.h>
-
 /* unlike our auto-generated syscall stubs, this code saves lr
    on the stack, as well as a few other registers. this makes
    our stack unwinder happy, when we generate debug stack
@@ -37,14 +32,22 @@
    abort due to a fatal runtime error (e.g. detection
    of a corrupted malloc heap).
 */
+#include <sys/linux-syscalls.h>
 
-ENTRY(kill)
+#ifndef __NR_kill
+#define __NR_kill   37
+#endif
+
+    .text
+    .type kill, #function
+    .globl kill
+    .align 4
+
+kill:
     stmfd   sp!, {r4-r7, ip, lr}
     ldr     r7, =__NR_kill
     swi     #0
     ldmfd   sp!, {r4-r7, ip, lr}
-    cmn     r0, #(MAX_ERRNO + 1)
-    bxls    lr
-    neg     r0, r0
-    b       __set_errno
-END(kill)
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno

libc/arch-arm/bionic/libgcc_compat.c

@@ -30,8 +30,8 @@
  * dynamic linker to copy their definition into the final libc.so binary.
  *
  * They are required to ensure backwards binary compatibility with
- * libc.so provided by the platform and binaries built with the NDK or
- * different versions/configurations of toolchains.
+ * Android 1.5 and Android 1.6 system images. Some applications built
+ * using the NDK require them to be here.
  *
  * Now, for a more elaborate description of the issue:
  *
@@ -48,9 +48,7 @@
  *         gcc <options> -o libfoo.so  foo.a libgcc.a -lc -lm
  *
  * This ensures that any helper function needed by the code in foo.a is copied
- * into the final libfoo.so. However, doing so will link a bunch of other __cxa
- * functions from libgcc.a into each .so and executable, causing 4k+ increase
- * in every binary. Therefore the Android platform build system has been
+ * into the final libfoo.so. Unfortunately, the Android build system has been
  * using this instead:
  *
  *         gcc <options> -o libfoo.so foo.a -lc -lm libgcc.a
@@ -60,26 +58,15 @@
  * into libfoo.so. Instead, a symbol import definition will be added to it
  * so libfoo.so can directly call the one in libc.so at runtime.
  *
- * When refreshing toolchains for new versions or using different architecture
- * flags, the set of helper functions copied to libc.so may change, which
- * resulted in some native shared libraries generated with the NDK or prebuilts
- * from vendors to fail to load properly.
+ * When changing toolchains for 2.0, the set of helper functions copied to
+ * libc.so changed, which resulted in some native shared libraries generated
+ * with the NDK to fail to load properly.
  *
  * The NDK has been fixed after 1.6_r1 to use the correct link command, so
  * any native shared library generated with it should now be safe from that
  * problem. On the other hand, existing shared libraries distributed with
  * applications that were generated with a previous version of the NDK
- * still need all 1.5/1.6 helper functions in libc.so and libm.so
- *
- * After 3.2, the toolchain was updated again, adding __aeabi_f2uiz to the
- * list of requirements. Technically, this is due to mis-linked NDK libraries
- * but it is easier to add a single function here than asking several app
- * developers to fix their build.
- *
- * The __aeabi_idiv function is added to the list since cortex-a15 supports
- * HW idiv instructions so the system libc.so doesn't pull in the reference to
- * __aeabi_idiv but legacy libraries built against cortex-a9 targets still need
- * it.
+ * still need all 1.5/1.6 helper functions in libc.so and libn.so
  *
  * Final note: some of the functions below should really be in libm.so to
  *             completely reflect the state of 1.5/1.6 system images. However,
@@ -109,7 +96,6 @@
     XX(__aeabi_dsub)         \
     XX(__aeabi_f2d)          \
     XX(__aeabi_f2iz)         \
-    XX(__aeabi_f2uiz)        \
     XX(__aeabi_fadd)         \
     XX(__aeabi_fcmpun)       \
     XX(__aeabi_fdiv)         \
@@ -118,13 +104,9 @@
     XX(__aeabi_fsub)         \
     XX(__aeabi_i2d)          \
     XX(__aeabi_i2f)          \
-    XX(__aeabi_idiv)         \
     XX(__aeabi_l2d)          \
     XX(__aeabi_l2f)          \
-    XX(__aeabi_lasr)         \
     XX(__aeabi_lmul)         \
-    XX(__aeabi_llsl)         \
-    XX(__aeabi_llsr)         \
     XX(__aeabi_ui2d)         \
     XX(__aeabi_ui2f)         \
     XX(__aeabi_ul2d)         \
@@ -132,7 +114,7 @@
     XX(__cmpdf2)             \
     XX(__divdf3)             \
     XX(__divsf3)             \
-    XX(__eqdf2)              \
+    XX(__eqdf2)             \
     XX(__extendsfdf2)        \
     XX(__fixdfsi)            \
     XX(__fixsfsi)            \

libc/arch-arm/bionic/memcmp.S

@@ -27,95 +27,52 @@
  */
 
 #include <machine/cpu-features.h>
-#include <machine/asm.h>
 
+    .text
 
-#ifdef HAVE_32_BYTE_CACHE_LINE
-#define CACHE_LINE_SIZE     32
-#else
-#define CACHE_LINE_SIZE     64
-#endif
+    .global memcmp
+    .type memcmp, %function
+    .align 4
 
 /*
- * Optimized memcmp() for Cortex-A9.
+ * Optimized memcmp() for ARM9.
+ * This would not be optimal on XScale or ARM11, where more prefetching
+ * and use of PLD will be needed.
+ * The 2 major optimzations here are
+ * (1) The main loop compares 16 bytes at a time
+ * (2) The loads are scheduled in a way they won't stall
  */
 
-ENTRY(memcmp)
-        pld         [r0, #(CACHE_LINE_SIZE * 0)]
-        pld         [r0, #(CACHE_LINE_SIZE * 1)]
+memcmp:
+        .fnstart
+        PLD         (r0, #0)
+        PLD         (r1, #0)
 
         /* take of the case where length is 0 or the buffers are the same */
         cmp         r0, r1
+        cmpne       r2, #0
         moveq       r0, #0
         bxeq        lr
 
-        pld         [r1, #(CACHE_LINE_SIZE * 0)]
-        pld         [r1, #(CACHE_LINE_SIZE * 1)]
-
-        /* make sure we have at least 8+4 bytes, this simplify things below
-         * and avoid some overhead for small blocks
-         */
-        cmp        r2, #(8+4)
-        bmi        10f
-/*
- * Neon optimization
- * Comparing 32 bytes at a time
- */
-#if defined(__ARM_NEON__) && defined(NEON_UNALIGNED_ACCESS)
-        subs        r2, r2, #32
-        blo         3f
-
-        /* preload all the cache lines we need. */
-        pld         [r0, #(CACHE_LINE_SIZE * 2)]
-        pld         [r1, #(CACHE_LINE_SIZE * 2)]
-
-1:      /* The main loop compares 32 bytes at a time */
-        vld1.8      {d0 - d3}, [r0]!
-        pld         [r0, #(CACHE_LINE_SIZE * 2)]
-        vld1.8      {d4 - d7}, [r1]!
-        pld         [r1, #(CACHE_LINE_SIZE * 2)]
-
-        /* Start subtracting the values and merge results */
-        vsub.i8     q0, q2
-        vsub.i8     q1, q3
-        vorr        q2, q0, q1
-        vorr        d4, d5
-        vmov        r3, ip, d4
-        /* Check if there are any differences among the 32 bytes */
-        orrs        r3, ip
-        bne         2f
-        subs        r2, r2, #32
-        bhs         1b
-        b           3f
-2:
-        /* Check if the difference was in the first or last 16 bytes */
-        sub         r0, #32
-        vorr        d0, d1
-        sub         r1, #32
-        vmov        r3, ip, d0
-        orrs        r3, ip
-        /* if the first 16 bytes are equal, we only have to rewind 16 bytes */
-        ittt        eq
-        subeq       r2, #16
-        addeq       r0, #16
-        addeq       r1, #16
-
-3:      /* fix-up the remaining count */
-        add         r2, r2, #32
-
-        cmp        r2, #(8+4)
-        bmi        10f
-#endif
-
         .save {r4, lr}
         /* save registers */
         stmfd       sp!, {r4, lr}
+        
+        PLD         (r0, #32)
+        PLD         (r1, #32)
 
         /* since r0 hold the result, move the first source
          * pointer somewhere else
          */
+         
          mov        r4, r0
-
+         
+         /* make sure we have at least 8+4 bytes, this simplify things below
+          * and avoid some overhead for small blocks
+          */
+         cmp        r2, #(8+4)
+         bmi        8f
+        
         /* align first pointer to word boundary
          * offset = -src & 3
          */
@@ -151,9 +108,9 @@ ENTRY(memcmp)
         ldr         ip, [r1]
         subs        r2, r2, #(32 + 4)
         bmi         1f
-
-0:      pld         [r4, #(CACHE_LINE_SIZE * 2)]
-        pld         [r1, #(CACHE_LINE_SIZE * 2)]
+        
+0:      PLD         (r4, #64)
+        PLD         (r1, #64)
         ldr         r0, [r4], #4
         ldr         lr, [r1, #4]!
         eors        r0, r0, ip
@@ -178,14 +135,14 @@ ENTRY(memcmp)
         ldreq       r0, [r4], #4
         ldreq       ip, [r1, #4]!
         eoreqs      r0, r0, lr
-        bne         2f
+        bne         2f        
         subs        r2, r2, #32
         bhs         0b
 
         /* do we have at least 4 bytes left? */
 1:      adds        r2, r2, #(32 - 4 + 4)
         bmi         4f
-
+        
         /* finish off 4 bytes at a time */
 3:      ldr         r0, [r4], #4
         ldr         ip, [r1], #4
@@ -219,28 +176,19 @@ ENTRY(memcmp)
 9:      /* restore registers and return */
         ldmfd       sp!, {r4, lr}
         bx          lr
+        .fnend
+
+
+
 
-10:     /* process less than 12 bytes */
-        cmp         r2, #0
-        moveq       r0, #0
-        bxeq        lr
-        mov         r3, r0
-11:
-        ldrb        r0, [r3], #1
-        ldrb        ip, [r1], #1
-        subs        r0, ip
-        bxne        lr
-        subs        r2, r2, #1
-        bne         11b
-        bx          lr
 
 5:      /*************** non-congruent case ***************/
-        and         r0, r1, #3
+        and         r0, r1, #3      
         cmp         r0, #2
         bne         4f
 
         /* here, offset is 2 (16-bits aligned, special cased) */
-
+        
         /* make sure we have at least 16 bytes to process */
         subs        r2, r2, #16
         addmi       r2, r2, #16
@@ -250,8 +198,8 @@ ENTRY(memcmp)
         bic         r1, r1, #3
         ldr         lr, [r1], #4
 
-6:      pld         [r1, #(CACHE_LINE_SIZE * 2)]
-        pld         [r4, #(CACHE_LINE_SIZE * 2)]
+6:      PLD         (r1, #64)
+        PLD         (r4, #64)
         mov         ip, lr, lsr #16
         ldr         lr, [r1], #4
         ldr         r0, [r4], #4
@@ -338,4 +286,3 @@ ENTRY(memcmp)
         mov         r2, #4
 		ldmfd		sp!, {r5, r6, r7}
         b           8b
-END(memcmp)

libc/arch-arm/bionic/memcmp16.S

@@ -27,7 +27,12 @@
  */
 
 #include <machine/cpu-features.h>
-#include <machine/asm.h>
+
+    .text
+
+    .global __memcmp16
+    .type __memcmp16, %function
+    .align 4
 
 /*
  * Optimized memcmp16() for ARM9.
@@ -38,7 +43,8 @@
  * (2) The loads are scheduled in a way they won't stall
  */
 
-ENTRY(__memcmp16)
+__memcmp16:
+        .fnstart
         PLD         (r0, #0)
         PLD         (r1, #0)
 
@@ -89,6 +95,8 @@ ENTRY(__memcmp16)
         /* restore registers and return */
         ldmnefd     sp!, {r4, lr}
         bxne        lr
+        .fnend
+
 
 
 0:      /* here the first pointer is aligned, and we have at least 3 words
@@ -229,4 +237,3 @@ ENTRY(__memcmp16)
 7:      /* fix up the 2 pointers and fallthrough... */
         sub         r1, r1, #2
         b           2b
-END(__memcmp16)

libc/arch-arm/bionic/memcpy.S

@@ -27,45 +27,37 @@
  */
 
 #include <machine/cpu-features.h>
-#include <machine/asm.h>
 
-#if defined(__ARM_NEON__) && !defined(ARCH_ARM_USE_NON_NEON_MEMCPY)
+#if defined(__ARM_NEON__)
 
         .text
         .fpu    neon
 
-#ifdef HAVE_32_BYTE_CACHE_LINE
-/* a prefetch distance of 2 cache-lines */
-#define CACHE_LINE_SIZE     32
-#else
+        .global memcpy
+        .type memcpy, %function
+        .align 4
+
 /* a prefetch distance of 4 cache-lines works best experimentally */
 #define CACHE_LINE_SIZE     64
-#endif
+#define PREFETCH_DISTANCE   (CACHE_LINE_SIZE*4)
 
-ENTRY(memcpy)
+memcpy:
+        .fnstart
         .save       {r0, lr}
-        /* start preloading as early as possible */
-        pld         [r1, #(CACHE_LINE_SIZE * 0)]
         stmfd       sp!, {r0, lr}
-        pld         [r1, #(CACHE_LINE_SIZE * 1)]
 
-/* If Neon supports unaligned access then remove the align code,
- * unless a size limit has been specified.
- */
-#ifndef NEON_UNALIGNED_ACCESS
+        /* start preloading as early as possible */
+        pld         [r1, #(CACHE_LINE_SIZE*0)]
+        pld         [r1, #(CACHE_LINE_SIZE*1)]
+
         /* do we have at least 16-bytes to copy (needed for alignment below) */
         cmp         r2, #16
         blo         5f
 
-        /* check if buffers are aligned. If so, run arm-only version */
-        eor         r3, r0, r1
-        ands        r3, r3, #0x3
-        beq         11f
-
-        /* align destination to cache-line for the write-buffer */
+        /* align destination to half cache-line for the write-buffer */
         rsb         r3, r0, #0
         ands        r3, r3, #0xF
-        beq         2f
+        beq         0f
 
         /* copy up to 15-bytes (count in r3) */
         sub         r2, r2, r3
@@ -86,14 +78,14 @@ ENTRY(memcpy)
         vld1.8      {d0}, [r1]!
         vst1.8      {d0}, [r0, :64]!
 2:
-        /* preload immediately the next cache line, which we may need */
-        pld         [r1, #(CACHE_LINE_SIZE * 0)]
-        pld         [r1, #(CACHE_LINE_SIZE * 1)]
 
-#ifdef HAVE_32_BYTE_CACHE_LINE
-        /* make sure we have at least 32 bytes to copy */
-        subs        r2, r2, #32
-        blo         4f
+0:      /* preload immediately the next cache line, which we may need */
+        pld         [r1, #(CACHE_LINE_SIZE*0)]
+        pld         [r1, #(CACHE_LINE_SIZE*1)]
+
+        /* make sure we have at least 64 bytes to copy */
+        subs        r2, r2, #64
+        blo         2f
 
         /* preload all the cache lines we need.
          * NOTE: the number of pld below depends on PREFETCH_DISTANCE,
@@ -101,35 +93,17 @@ ENTRY(memcpy)
          * avoid the goofy code below. In practice this doesn't seem to make
          * a big difference.
          */
+        pld         [r1, #(CACHE_LINE_SIZE*2)]
+        pld         [r1, #(CACHE_LINE_SIZE*3)]
         pld         [r1, #(PREFETCH_DISTANCE)]
 
-1:      /* The main loop copies 32 bytes at a time */
-        vld1.8      {d0  - d3},   [r1]!
-        pld         [r1, #(PREFETCH_DISTANCE)]
-        subs        r2, r2, #32
-        vst1.8      {d0  - d3},   [r0, :128]!
-        bhs         1b
-#else
-        /* make sure we have at least 64 bytes to copy */
-        subs        r2, r2, #64
-        blo         2f
-
-        /* preload all the cache lines we need. */
-        pld         [r1, #(CACHE_LINE_SIZE * 2)]
-        pld         [r1, #(CACHE_LINE_SIZE * 3)]
-
 1:      /* The main loop copies 64 bytes at a time */
-        vld1.8      {d0 - d3}, [r1]!
-        vld1.8      {d4 - d7}, [r1]!
-#ifdef  HAVE_32_BYTE_CACHE_LINE
-        pld         [r1, #(CACHE_LINE_SIZE * 2)]
-        pld         [r1, #(CACHE_LINE_SIZE * 3)]
-#else
-        pld         [r1, #(CACHE_LINE_SIZE * 3)]
-#endif
+        vld1.8      {d0  - d3},   [r1]!
+        vld1.8      {d4  - d7},   [r1]!
+        pld         [r1, #(PREFETCH_DISTANCE)]
         subs        r2, r2, #64
-        vst1.8      {d0 - d3}, [r0, :128]!
-        vst1.8      {d4 - d7}, [r0, :128]!
+        vst1.8      {d0  - d3},   [r0, :128]!
+        vst1.8      {d4  - d7},   [r0, :128]!
         bhs         1b
 
 2:      /* fix-up the remaining count and make sure we have >= 32 bytes left */
@@ -138,11 +112,11 @@ ENTRY(memcpy)
         blo         4f
 
 3:      /* 32 bytes at a time. These cache lines were already preloaded */
-        vld1.8      {d0 - d3}, [r1]!
+        vld1.8      {d0 - d3},  [r1]!
         subs        r2, r2, #32
-        vst1.8      {d0 - d3}, [r0, :128]!
+        vst1.8      {d0 - d3},  [r0, :128]!
         bhs         3b
-#endif
+
 4:      /* less than 32 left */
         add         r2, r2, #32
         tst         r2, #0x10
@@ -150,6 +124,7 @@ ENTRY(memcpy)
         // copies 16 bytes, 128-bits aligned
         vld1.8      {d0, d1}, [r1]!
         vst1.8      {d0, d1}, [r0, :128]!
+
 5:      /* copy up to 15-bytes (count in r2) */
         movs        ip, r2, lsl #29
         bcc         1f
@@ -168,170 +143,18 @@ ENTRY(memcpy)
 
         ldmfd       sp!, {r0, lr}
         bx          lr
-
-#else   /* NEON_UNALIGNED_ACCESS */
-
-        // Check so divider is at least 16 bytes, needed for alignment code.
-        cmp         r2, #16
-        blo         5f
-
-#ifdef NEON_MEMCPY_ALIGNMENT_DIVIDER
-        /* Check the upper size limit for Neon unaligned memory access in memcpy */
-#if NEON_MEMCPY_ALIGNMENT_DIVIDER >= 16
-        cmp         r2, #NEON_MEMCPY_ALIGNMENT_DIVIDER
-        blo         3f
-#endif
-        /* check if buffers are aligned. If so, run arm-only version */
-        eor         r3, r0, r1
-        ands        r3, r3, #0x3
-        beq         11f
-
-        /* align destination to 16 bytes for the write-buffer */
-        rsb         r3, r0, #0
-        ands        r3, r3, #0xF
-        beq         3f
-
-        /* copy up to 15-bytes (count in r3) */
-        sub         r2, r2, r3
-        movs        ip, r3, lsl #31
-        ldrmib      lr, [r1], #1
-        strmib      lr, [r0], #1
-        ldrcsb      ip, [r1], #1
-        ldrcsb      lr, [r1], #1
-        strcsb      ip, [r0], #1
-        strcsb      lr, [r0], #1
-        movs        ip, r3, lsl #29
-        bge         1f
-        // copies 4 bytes, destination 32-bits aligned
-        vld1.32     {d0[0]}, [r1]!
-        vst1.32     {d0[0]}, [r0, :32]!
-1:      bcc         2f
-        // copies 8 bytes, destination 64-bits aligned
-        vld1.8      {d0}, [r1]!
-        vst1.8      {d0}, [r0, :64]!
-2:
-        /* preload immediately the next cache line, which we may need */
-        pld         [r1, #(CACHE_LINE_SIZE * 0)]
-        pld         [r1, #(CACHE_LINE_SIZE * 1)]
-3:
-#endif
-        /* make sure we have at least 64 bytes to copy */
-        subs        r2, r2, #64
-        blo         2f
-
-        /* preload all the cache lines we need */
-        pld         [r1, #(CACHE_LINE_SIZE * 2)]
-        pld         [r1, #(CACHE_LINE_SIZE * 3)]
-
-1:      /* The main loop copies 64 bytes at a time */
-        vld1.8      {d0 - d3}, [r1]!
-        vld1.8      {d4 - d7}, [r1]!
-#ifdef  HAVE_32_BYTE_CACHE_LINE
-        pld         [r1, #(CACHE_LINE_SIZE * 2)]
-        pld         [r1, #(CACHE_LINE_SIZE * 3)]
-#else
-        pld         [r1, #(CACHE_LINE_SIZE * 3)]
-#endif
-        subs        r2, r2, #64
-        vst1.8      {d0 - d3}, [r0]!
-        vst1.8      {d4 - d7}, [r0]!
-        bhs         1b
-
-2:      /* fix-up the remaining count and make sure we have >= 32 bytes left */
-        add         r2, r2, #64
-        subs        r2, r2, #32
-        blo         4f
-
-3:      /* 32 bytes at a time. These cache lines were already preloaded */
-        vld1.8      {d0 - d3}, [r1]!
-        subs        r2, r2, #32
-        vst1.8      {d0 - d3}, [r0]!
-        bhs         3b
-
-4:      /* less than 32 left */
-        add         r2, r2, #32
-        tst         r2, #0x10
-        beq         5f
-        // copies 16 bytes, 128-bits aligned
-        vld1.8      {d0, d1}, [r1]!
-        vst1.8      {d0, d1}, [r0]!
-5:      /* copy up to 15-bytes (count in r2) */
-        movs        ip, r2, lsl #29
-        bcc         1f
-        vld1.8      {d0}, [r1]!
-        vst1.8      {d0}, [r0]!
-1:      bge         2f
-        vld1.32     {d0[0]}, [r1]!
-        vst1.32     {d0[0]}, [r0]!
-2:      movs        ip, r2, lsl #31
-        ldrmib      r3, [r1], #1
-        ldrcsb      ip, [r1], #1
-        ldrcsb      lr, [r1], #1
-        strmib      r3, [r0], #1
-        strcsb      ip, [r0], #1
-        strcsb      lr, [r0], #1
-
-        ldmfd       sp!, {r0, lr}
-        bx          lr
-#endif  /* NEON_UNALIGNED_ACCESS */
-11:
-        /* Simple arm-only copy loop to handle aligned copy operations */
-        stmfd       sp!, {r4, r5, r6, r7, r8}
-        pld         [r1, #(CACHE_LINE_SIZE * 2)]
-
-        /* Check alignment */
-        rsb         r3, r1, #0
-        ands        r3, #3
-        beq         2f
-
-        /* align source to 32 bits. We need to insert 2 instructions between
-         * a ldr[b|h] and str[b|h] because byte and half-word instructions
-         * stall 2 cycles.
-         */
-        movs        r12, r3, lsl #31
-        sub         r2, r2, r3      /* we know that r3 <= r2 because r2 >= 4 */
-        ldrmib      r3, [r1], #1
-        ldrcsb      r4, [r1], #1
-        ldrcsb      r5, [r1], #1
-        strmib      r3, [r0], #1
-        strcsb      r4, [r0], #1
-        strcsb      r5, [r0], #1
-2:
-        subs        r2, #32
-        blt         5f
-        pld         [r1, #(CACHE_LINE_SIZE * 3)]
-3:      /* Main copy loop, copying 32 bytes at a time */
-        pld         [r1, #(CACHE_LINE_SIZE * 4)]
-        ldmia       r1!, {r3, r4, r5, r6, r7, r8, r12, lr}
-        subs        r2, r2, #32
-        stmia       r0!, {r3, r4, r5, r6, r7, r8, r12, lr}
-        bge         3b
-5:      /* Handle any remaining bytes */
-        adds        r2, #32
-        beq         6f
-
-        movs        r12, r2, lsl #28
-        ldmcsia     r1!, {r3, r4, r5, r6}   /* 16 bytes */
-        ldmmiia     r1!, {r7, r8}           /*  8 bytes */
-        stmcsia     r0!, {r3, r4, r5, r6}
-        stmmiia     r0!, {r7, r8}
-        movs        r12, r2, lsl #30
-        ldrcs       r3, [r1], #4            /*  4 bytes */
-        ldrmih      r4, [r1], #2            /*  2 bytes */
-        strcs       r3, [r0], #4
-        strmih      r4, [r0], #2
-        tst         r2, #0x1
-        ldrneb      r3, [r1]                /*  last byte  */
-        strneb      r3, [r0]
-6:
-        ldmfd       sp!, {r4, r5, r6, r7, r8}
-        ldmfd       sp!, {r0, pc}
-END(memcpy)
+        .fnend
 
 
 #else   /* __ARM_ARCH__ < 7 */
 
 
+	.text
+
+    .global memcpy
+    .type memcpy, %function
+    .align 4
+
 		/*
 		 * Optimized memcpy() for ARM.
          *
@@ -339,11 +162,12 @@ END(memcpy)
 		 * so we have to preserve R0.
 		 */
 
-ENTRY(memcpy)
+memcpy:
 		/* The stack must always be 64-bits aligned to be compliant with the
 		 * ARM ABI. Since we have to save R0, we might as well save R4
 		 * which we can use for better pipelining of the reads below
 		 */
+        .fnstart
         .save       {r0, r4, lr}
         stmfd       sp!, {r0, r4, lr}
         /* Making room for r5-r11 which will be spilled later */
@@ -680,7 +504,7 @@ copy_last_3_and_return:
         add         sp,  sp, #28
 		ldmfd		sp!, {r0, r4, lr}
 		bx			lr
-END(memcpy)
+        .fnend
 
 
 #endif    /* __ARM_ARCH__ < 7 */

libc/arch-arm/bionic/memcpy.a15.S

@@ -1,406 +0,0 @@
-/*
- * Copyright (c) 2013 ARM Ltd
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the company may not be used to endorse or promote
- *    products derived from this software without specific prior written
- *    permission.
- *
- * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-    /* Prototype: void *memcpy (void *dst, const void *src, size_t count).  */
-
-        /* Use the version of memcpy implemented using LDRD and STRD.
-           This version is tuned for Cortex-A15.
-           This might not be the best for other ARMv7-A CPUs,
-           but there is no predefine to distinguish between
-           different CPUs in the same architecture,
-           and this version is better than the plain memcpy provided in newlib.
-
-           Therefore, we use this version for all ARMv7-A CPUS.  */
-
-        /* To make the same code compile for both ARM and Thumb instruction
-       sets, switch to unified syntax at the beginning of this function.
-           However, by using the same code, we may be missing optimization
-       opportunities.  For instance, in LDRD/STRD instructions, the first
-       destination register must be even and the second consecutive in
-       ARM state, but not in Thumb state.  */
-
-#include <machine/cpu-features.h>
-#include <machine/asm.h>
-
-        .syntax         unified
-
-ENTRY(memcpy)
-
-       /* Assumes that n >= 0, and dst, src are valid pointers.
-          If there is at least 8 bytes to copy, use LDRD/STRD.
-          If src and dst are misaligned with different offsets,
-          first copy byte by byte until dst is aligned,
-          and then copy using LDRD/STRD and shift if needed.
-          When less than 8 left, copy a word and then byte by byte.  */
-
-       /* Save registers (r0 holds the return value):
-          optimized push {r0, r4, r5, r6, r7, lr}.
-          To try and improve performance, stack layout changed,
-          i.e., not keeping the stack looking like users expect
-          (highest numbered register at highest address).  */
-        .save   {r0, lr}
-        push    {r0, lr}
-        .save   {r4, r5}
-        strd    r4, r5, [sp, #-8]!
-        .save   {r6, r7}
-        strd    r6, r7, [sp, #-8]!
-
-       /* TODO: Add debug frame directives.
-          We don't need exception unwind directives, because the code below
-      does not throw any exceptions and does not call any other functions.
-          Generally, newlib functions like this lack debug information for
-      assembler source.  */
-
-        /* Get copying of tiny blocks out of the way first.  */
-        /* Is there at least 4 bytes to copy?  */
-        subs    r2, r2, #4
-        blt     copy_less_than_4                 /* If n < 4.  */
-
-        /* Check word alignment.  */
-        ands    ip, r0, #3                       /* ip = last 2 bits of dst.  */
-        bne     dst_not_word_aligned             /* If dst is not word-aligned.  */
-
-        /* Get here if dst is word-aligned.  */
-        ands    ip, r1, #3                      /* ip = last 2 bits of src.  */
-        bne     src_not_word_aligned            /* If src is not word-aligned.  */
-word_aligned:
-        /* Get here if source and dst both are word-aligned.
-           The number of bytes remaining to copy is r2+4.  */
-
-        /* Is there is at least 64 bytes to copy?  */
-        subs    r2, r2, #60
-        blt     copy_less_than_64                /* If r2 + 4 < 64.  */
-
-        /* First, align the destination buffer to 8-bytes,
-           to make sure double loads and stores don't cross cache line boundary,
-           as they are then more expensive even if the data is in the cache
-           (require two load/store issue cycles instead of one).
-           If only one of the buffers is not 8-bytes aligned,
-           then it's more important to align dst than src,
-           because there is more penalty for stores
-           than loads that cross cacheline boundary.
-           This check and realignment are only worth doing
-           if there is a lot to copy.  */
-
-        /* Get here if dst is word aligned,
-           i.e., the 2 least significant bits are 0.
-           If dst is not 2w aligned (i.e., the 3rd bit is not set in dst),
-           then copy 1 word (4 bytes).  */
-        ands    r3, r0, #4
-        beq     11f                  /* If dst already two-word aligned.  */
-        ldr     r3, [r1], #4
-        str     r3, [r0], #4
-        subs    r2, r2, #4
-        blt     copy_less_than_64
-
-11:
-        /* TODO: Align to cacheline (useful for PLD optimization).  */
-
-        /* Every loop iteration copies 64 bytes.  */
-1:
-        .irp    offset, #0, #8, #16, #24, #32, #40, #48, #56
-        ldrd    r4, r5, [r1, \offset]
-        strd    r4, r5, [r0, \offset]
-        .endr
-
-        add     r0, r0, #64
-        add     r1, r1, #64
-        subs    r2, r2, #64
-        bge     1b                            /* If there is more to copy.  */
-
-copy_less_than_64:
-
-        /* Get here if less than 64 bytes to copy, -64 <= r2 < 0.
-           Restore the count if there is more than 7 bytes to copy.  */
-        adds    r2, r2, #56
-        blt     copy_less_than_8
-
-        /* Copy 8 bytes at a time.  */
-2:
-        ldrd    r4, r5, [r1], #8
-        strd    r4, r5, [r0], #8
-        subs    r2, r2, #8
-        bge     2b                            /* If there is more to copy.  */
-
-copy_less_than_8:
-
-        /* Get here if less than 8 bytes to copy, -8 <= r2 < 0.
-           Check if there is more to copy.  */
-        cmn     r2, #8
-        beq     return                          /* If r2 + 8 == 0.  */
-
-        /* Restore the count if there is more than 3 bytes to copy.  */
-        adds    r2, r2, #4
-        blt     copy_less_than_4
-
-        /* Copy 4 bytes.  */
-        ldr     r3, [r1], #4
-        str     r3, [r0], #4
-
-copy_less_than_4:
-        /* Get here if less than 4 bytes to copy, -4 <= r2 < 0.  */
-
-        /* Restore the count, check if there is more to copy.  */
-        adds    r2, r2, #4
-        beq     return                          /* If r2 == 0.  */
-
-        /* Get here with r2 is in {1,2,3}={01,10,11}.  */
-        /* Logical shift left r2, insert 0s, update flags.  */
-        lsls    r2, r2, #31
-
-        /* Copy byte by byte.
-           Condition ne means the last bit of r2 is 0.
-           Condition cs means the second to last bit of r2 is set,
-           i.e., r2 is 1 or 3.  */
-        itt     ne
-        ldrbne  r3, [r1], #1
-        strbne  r3, [r0], #1
-
-        itttt   cs
-        ldrbcs  r4, [r1], #1
-        ldrbcs  r5, [r1]
-        strbcs  r4, [r0], #1
-        strbcs  r5, [r0]
-
-return:
-        /* Restore registers: optimized pop {r0, r4, r5, r6, r7, pc}   */
-        /* This is the only return point of memcpy.  */
-        ldrd r6, r7, [sp], #8
-        ldrd r4, r5, [sp], #8
-        pop {r0, pc}
-
-#ifndef __ARM_FEATURE_UNALIGNED
-
-       /* The following assembly macro implements misaligned copy in software.
-          Assumes that dst is word aligned, src is at offset "pull" bits from
-      word, push = 32 - pull, and the number of bytes that remain to copy
-      is r2 + 4, r2 >= 0.  */
-
-       /* In the code below, r2 is the number of bytes that remain to be
-      written.  The number of bytes read is always larger, because we have
-      partial words in the shift queue.  */
-
-        .macro  miscopy pull push shiftleft shiftright
-
-        /* Align src to the previous word boundary.  */
-        bic     r1, r1, #3
-
-        /* Initialize the shift queue.  */
-        ldr     r5, [r1], #4                   /* Load a word from source.  */
-
-        subs    r2, r2, #4
-        blt     6f          /* Go to misaligned copy of less than 8 bytes.  */
-
-       /* Get here if there is more than 8 bytes to copy.
-          The number of bytes to copy is r2+8, r2 >= 0.  */
-
-       subs     r2, r2, #56
-       blt      4f         /* Go to misaligned copy of less than 64 bytes.  */
-
-3:
-       /* Get here if there is more than 64 bytes to copy.
-          The number of bytes to copy is r2+64, r2 >= 0.  */
-
-       /* Copy 64 bytes in every iteration.
-          Use a partial word from the shift queue.  */
-        .irp    offset, #0, #8, #16, #24, #32, #40, #48, #56
-        mov     r6, r5, \shiftleft #\pull
-        ldrd    r4, r5, [r1, \offset]
-        orr     r6, r6, r4, \shiftright #\push
-        mov     r7, r4, \shiftleft #\pull
-        orr     r7, r7, r5, \shiftright #\push
-        strd    r6, r7, [r0, \offset]
-        .endr
-
-        add     r1, r1, #64
-        add     r0, r0, #64
-        subs    r2, r2, #64
-        bge     3b
-
-4:
-       /* Get here if there is less than 64 bytes to copy (-64 <= r2 < 0)
-      and they are misaligned.  */
-
-       /* Restore the count if there is more than 7 bytes to copy.  */
-        adds    r2, r2, #56
-
-        blt     6f          /* Go to misaligned copy of less than 8 bytes.  */
-
-5:
-        /* Copy 8 bytes at a time.
-           Use a partial word from the shift queue.  */
-        mov     r6, r5, \shiftleft #\pull
-        ldrd    r4, r5, [r1], #8
-        orr     r6, r6, r4, \shiftright #\push
-        mov     r7, r4, \shiftleft #\pull
-        orr     r7, r7, r5, \shiftright #\push
-        strd    r6, r7, [r0], #8
-
-        subs    r2, r2, #8
-        bge     5b                        /* If there is more to copy.  */
-
-6:
-        /* Get here if there less than 8 bytes to copy (-8 <= r2 < 0)
-           and they are misaligned.  */
-
-        /* Check if there is more to copy.  */
-        cmn     r2, #8
-        beq     return
-
-        /* Check if there is less than 4 bytes to copy.  */
-        cmn     r2, #4
-
-        itt     lt
-        /* Restore src offset from word-align.  */
-        sublt   r1, r1, #(\push / 8)
-        blt     copy_less_than_4
-
-        /* Use a partial word from the shift queue.  */
-        mov     r3, r5, \shiftleft #\pull
-        /* Load a word from src, but without writeback
-           (this word is not fully written to dst).  */
-        ldr     r5, [r1]
-
-        /* Restore src offset from word-align.  */
-        add     r1, r1, #(\pull / 8)
-
-        /* Shift bytes to create one dst word and store it.  */
-        orr     r3, r3, r5, \shiftright #\push
-        str     r3, [r0], #4
-
-        /* Use single byte copying of the remaining bytes.  */
-        b       copy_less_than_4
-
-        .endm
-
-#endif /* not __ARM_FEATURE_UNALIGNED  */
-
-dst_not_word_aligned:
-
-       /* Get here when dst is not aligned and ip has the last 2 bits of dst,
-          i.e., ip is the offset of dst from word.
-          The number of bytes that remains to copy is r2 + 4,
-          i.e., there are at least 4 bytes to copy.
-          Write a partial word (0 to 3 bytes), such that dst becomes
-      word-aligned.  */
-
-       /* If dst is at ip bytes offset from a word (with 0 < ip < 4),
-          then there are (4 - ip) bytes to fill up to align dst to the next
-      word.  */
-        rsb     ip, ip, #4                        /* ip = #4 - ip.  */
-        cmp     ip, #2
-
-       /* Copy byte by byte with conditionals.  */
-        itt     gt
-        ldrbgt  r3, [r1], #1
-        strbgt  r3, [r0], #1
-
-        itt     ge
-        ldrbge  r4, [r1], #1
-        strbge  r4, [r0], #1
-
-        ldrb    lr, [r1], #1
-        strb    lr, [r0], #1
-
-       /* Update the count.
-          ip holds the number of bytes we have just copied.  */
-        subs    r2, r2, ip                        /* r2 = r2 - ip.  */
-        blt     copy_less_than_4                  /* If r2 < ip.  */
-
-       /* Get here if there are more than 4 bytes to copy.
-          Check if src is aligned.  If beforehand src and dst were not word
-      aligned but congruent (same offset), then now they are both
-      word-aligned, and we can copy the rest efficiently (without
-      shifting).  */
-        ands    ip, r1, #3                    /* ip = last 2 bits of src.  */
-        beq     word_aligned                  /* If r1 is word-aligned.  */
-
-src_not_word_aligned:
-       /* Get here when src is not word-aligned, but dst is word-aligned.
-          The number of bytes that remains to copy is r2+4.  */
-
-#ifdef __ARM_FEATURE_UNALIGNED
-       /* Copy word by word using LDR when alignment can be done in hardware,
-          i.e., SCTLR.A is set, supporting unaligned access in LDR and STR.  */
-        subs    r2, r2, #60
-        blt     8f
-
-7:
-        /* Copy 64 bytes in every loop iteration.  */
-        .irp    offset, #0, #4, #8, #12, #16, #20, #24, #28, #32, #36, #40, #44, #48, #52, #56, #60
-        ldr     r3, [r1, \offset]
-        str     r3, [r0, \offset]
-        .endr
-
-        add     r0, r0, #64
-        add     r1, r1, #64
-        subs    r2, r2, #64
-        bge     7b
-
-8:
-        /* Get here if less than 64 bytes to copy, -64 <= r2 < 0.
-           Check if there is more than 3 bytes to copy.  */
-        adds    r2, r2, #60
-        blt     copy_less_than_4
-
-9:
-       /* Get here if there is less than 64 but at least 4 bytes to copy,
-          where the number of bytes to copy is r2+4.  */
-        ldr     r3, [r1], #4
-        str     r3, [r0], #4
-        subs    r2, r2, #4
-        bge     9b
-
-        b       copy_less_than_4
-
-#else /* not __ARM_FEATURE_UNALIGNED  */
-
-       /* ip has last 2 bits of src,
-          i.e., ip is the offset of src from word, and ip > 0.
-          Compute shifts needed to copy from src to dst.  */
-        cmp     ip, #2
-        beq     miscopy_16_16             /* If ip == 2.  */
-        bge     miscopy_24_8              /* If ip == 3.  */
-
-        /* Get here if ip == 1.  */
-
-        /* Endian independent macros for shifting bytes within registers.  */
-
-#ifndef __ARMEB__
-miscopy_8_24:   miscopy pull=8 push=24 shiftleft=lsr shiftright=lsl
-miscopy_16_16:  miscopy pull=16 push=16 shiftleft=lsr shiftright=lsl
-miscopy_24_8:   miscopy pull=24 push=8 shiftleft=lsr shiftright=lsl
-#else  /* not __ARMEB__ */
-miscopy_8_24:   miscopy pull=8 push=24 shiftleft=lsl shiftright=lsr
-miscopy_16_16:  miscopy pull=16 push=16 shiftleft=lsl shiftright=lsr
-miscopy_24_8:   miscopy pull=24 push=8 shiftleft=lsl shiftright=lsr
-#endif  /* not __ARMEB__ */
-
-#endif  /* not __ARM_FEATURE_UNALIGNED  */
-
-END(memcpy)

libc/arch-arm/bionic/memcpy.a9.S

@@ -1,614 +0,0 @@
-/* Copyright (c) 2013, Linaro Limited
-   All rights reserved.
-
-   Redistribution and use in source and binary forms, with or without
-   modification, are permitted provided that the following conditions
-   are met:
-
-      * Redistributions of source code must retain the above copyright
-      notice, this list of conditions and the following disclaimer.
-
-      * Redistributions in binary form must reproduce the above copyright
-      notice, this list of conditions and the following disclaimer in the
-      documentation and/or other materials provided with the distribution.
-
-      * Neither the name of Linaro Limited nor the names of its
-      contributors may be used to endorse or promote products derived
-      from this software without specific prior written permission.
-
-   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-   HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
- */
-
-/*
-   This memcpy routine is optimised for Cortex-A15 cores and takes advantage
-   of VFP or NEON when built with the appropriate flags.
-
-   Assumptions:
-
-    ARMv6 (ARMv7-a if using Neon)
-    ARM state
-    Unaligned accesses
-    LDRD/STRD support unaligned word accesses
-
- */
-
-#include <machine/cpu-features.h>
-#include <machine/asm.h>
-
-	.syntax unified
-	/* This implementation requires ARM state.  */
-	.arm
-
-#ifdef __ARM_NEON__
-
-	.fpu	neon
-	.arch	armv7-a
-# define FRAME_SIZE	4
-# define USE_VFP
-# define USE_NEON
-
-#elif !defined (__SOFTFP__)
-
-	.arch	armv6
-	.fpu	vfpv2
-# define FRAME_SIZE	32
-# define USE_VFP
-
-#else
-	.arch	armv6
-# define FRAME_SIZE    32
-
-#endif
-
-/* Old versions of GAS incorrectly implement the NEON align semantics.  */
-#ifdef BROKEN_ASM_NEON_ALIGN
-#define ALIGN(addr, align) addr,:align
-#else
-#define ALIGN(addr, align) addr:align
-#endif
-
-#define PC_OFFSET	8	/* PC pipeline compensation.  */
-#define INSN_SIZE	4
-
-/* Call parameters.  */
-#define dstin	r0
-#define src	r1
-#define count	r2
-
-/* Locals.  */
-#define tmp1	r3
-#define dst	ip
-#define tmp2	r10
-
-#ifndef USE_NEON
-/* For bulk copies using GP registers.  */
-#define	A_l	r2		/* Call-clobbered.  */
-#define	A_h	r3		/* Call-clobbered.  */
-#define	B_l	r4
-#define	B_h	r5
-#define	C_l	r6
-#define	C_h	r7
-#define	D_l	r8
-#define	D_h	r9
-#endif
-
-/* Number of lines ahead to pre-fetch data.  If you change this the code
-   below will need adjustment to compensate.  */
-
-#define prefetch_lines	5
-
-#ifdef USE_VFP
-	.macro	cpy_line_vfp vreg, base
-	vstr	\vreg, [dst, #\base]
-	vldr	\vreg, [src, #\base]
-	vstr	d0, [dst, #\base + 8]
-	vldr	d0, [src, #\base + 8]
-	vstr	d1, [dst, #\base + 16]
-	vldr	d1, [src, #\base + 16]
-	vstr	d2, [dst, #\base + 24]
-	vldr	d2, [src, #\base + 24]
-	vstr	\vreg, [dst, #\base + 32]
-	vldr	\vreg, [src, #\base + prefetch_lines * 64 - 32]
-	vstr	d0, [dst, #\base + 40]
-	vldr	d0, [src, #\base + 40]
-	vstr	d1, [dst, #\base + 48]
-	vldr	d1, [src, #\base + 48]
-	vstr	d2, [dst, #\base + 56]
-	vldr	d2, [src, #\base + 56]
-	.endm
-
-	.macro	cpy_tail_vfp vreg, base
-	vstr	\vreg, [dst, #\base]
-	vldr	\vreg, [src, #\base]
-	vstr	d0, [dst, #\base + 8]
-	vldr	d0, [src, #\base + 8]
-	vstr	d1, [dst, #\base + 16]
-	vldr	d1, [src, #\base + 16]
-	vstr	d2, [dst, #\base + 24]
-	vldr	d2, [src, #\base + 24]
-	vstr	\vreg, [dst, #\base + 32]
-	vstr	d0, [dst, #\base + 40]
-	vldr	d0, [src, #\base + 40]
-	vstr	d1, [dst, #\base + 48]
-	vldr	d1, [src, #\base + 48]
-	vstr	d2, [dst, #\base + 56]
-	vldr	d2, [src, #\base + 56]
-	.endm
-#endif
-
-	.p2align 6
-ENTRY(memcpy)
-
-	mov	dst, dstin	/* Preserve dstin, we need to return it.  */
-	cmp	count, #64
-	bge	.Lcpy_not_short
-	/* Deal with small copies quickly by dropping straight into the
-	   exit block.  */
-
-.Ltail63unaligned:
-#ifdef USE_NEON
-	and	tmp1, count, #0x38
-	rsb	tmp1, tmp1, #(56 - PC_OFFSET + INSN_SIZE)
-	add	pc, pc, tmp1
-	vld1.8	{d0}, [src]!	/* 14 words to go.  */
-	vst1.8	{d0}, [dst]!
-	vld1.8	{d0}, [src]!	/* 12 words to go.  */
-	vst1.8	{d0}, [dst]!
-	vld1.8	{d0}, [src]!	/* 10 words to go.  */
-	vst1.8	{d0}, [dst]!
-	vld1.8	{d0}, [src]!	/* 8 words to go.  */
-	vst1.8	{d0}, [dst]!
-	vld1.8	{d0}, [src]!	/* 6 words to go.  */
-	vst1.8	{d0}, [dst]!
-	vld1.8	{d0}, [src]!	/* 4 words to go.  */
-	vst1.8	{d0}, [dst]!
-	vld1.8	{d0}, [src]!	/* 2 words to go.  */
-	vst1.8	{d0}, [dst]!
-
-	tst	count, #4
-	ldrne	tmp1, [src], #4
-	strne	tmp1, [dst], #4
-#else
-	/* Copy up to 15 full words of data.  May not be aligned.  */
-	/* Cannot use VFP for unaligned data.  */
-	and	tmp1, count, #0x3c
-	add	dst, dst, tmp1
-	add	src, src, tmp1
-	rsb	tmp1, tmp1, #(60 - PC_OFFSET/2 + INSN_SIZE/2)
-	/* Jump directly into the sequence below at the correct offset.  */
-	add	pc, pc, tmp1, lsl #1
-
-	ldr	tmp1, [src, #-60]	/* 15 words to go.  */
-	str	tmp1, [dst, #-60]
-
-	ldr	tmp1, [src, #-56]	/* 14 words to go.  */
-	str	tmp1, [dst, #-56]
-	ldr	tmp1, [src, #-52]
-	str	tmp1, [dst, #-52]
-
-	ldr	tmp1, [src, #-48]	/* 12 words to go.  */
-	str	tmp1, [dst, #-48]
-	ldr	tmp1, [src, #-44]
-	str	tmp1, [dst, #-44]
-
-	ldr	tmp1, [src, #-40]	/* 10 words to go.  */
-	str	tmp1, [dst, #-40]
-	ldr	tmp1, [src, #-36]
-	str	tmp1, [dst, #-36]
-
-	ldr	tmp1, [src, #-32]	/* 8 words to go.  */
-	str	tmp1, [dst, #-32]
-	ldr	tmp1, [src, #-28]
-	str	tmp1, [dst, #-28]
-
-	ldr	tmp1, [src, #-24]	/* 6 words to go.  */
-	str	tmp1, [dst, #-24]
-	ldr	tmp1, [src, #-20]
-	str	tmp1, [dst, #-20]
-
-	ldr	tmp1, [src, #-16]	/* 4 words to go.  */
-	str	tmp1, [dst, #-16]
-	ldr	tmp1, [src, #-12]
-	str	tmp1, [dst, #-12]
-
-	ldr	tmp1, [src, #-8]	/* 2 words to go.  */
-	str	tmp1, [dst, #-8]
-	ldr	tmp1, [src, #-4]
-	str	tmp1, [dst, #-4]
-#endif
-
-	lsls	count, count, #31
-	ldrhcs	tmp1, [src], #2
-	ldrbne	src, [src]		/* Src is dead, use as a scratch.  */
-	strhcs	tmp1, [dst], #2
-	strbne	src, [dst]
-	bx	lr
-
-.Lcpy_not_short:
-	/* At least 64 bytes to copy, but don't know the alignment yet.  */
-	str	tmp2, [sp, #-FRAME_SIZE]!
-	and	tmp2, src, #7
-	and	tmp1, dst, #7
-	cmp	tmp1, tmp2
-	bne	.Lcpy_notaligned
-
-#ifdef USE_VFP
-	/* Magic dust alert!  Force VFP on Cortex-A9.  Experiments show
-	   that the FP pipeline is much better at streaming loads and
-	   stores.  This is outside the critical loop.  */
-	vmov.f32	s0, s0
-#endif
-
-	/* SRC and DST have the same mutual 32-bit alignment, but we may
-	   still need to pre-copy some bytes to get to natural alignment.
-	   We bring DST into full 64-bit alignment.  */
-	lsls	tmp2, dst, #29
-	beq	1f
-	rsbs	tmp2, tmp2, #0
-	sub	count, count, tmp2, lsr #29
-	ldrmi	tmp1, [src], #4
-	strmi	tmp1, [dst], #4
-	lsls	tmp2, tmp2, #2
-	ldrhcs	tmp1, [src], #2
-	ldrbne	tmp2, [src], #1
-	strhcs	tmp1, [dst], #2
-	strbne	tmp2, [dst], #1
-
-1:
-	subs	tmp2, count, #64	/* Use tmp2 for count.  */
-	blt	.Ltail63aligned
-
-	cmp	tmp2, #512
-	bge	.Lcpy_body_long
-
-.Lcpy_body_medium:			/* Count in tmp2.  */
-#ifdef USE_VFP
-1:
-	vldr	d0, [src, #0]
-	subs	tmp2, tmp2, #64
-	vldr	d1, [src, #8]
-	vstr	d0, [dst, #0]
-	vldr	d0, [src, #16]
-	vstr	d1, [dst, #8]
-	vldr	d1, [src, #24]
-	vstr	d0, [dst, #16]
-	vldr	d0, [src, #32]
-	vstr	d1, [dst, #24]
-	vldr	d1, [src, #40]
-	vstr	d0, [dst, #32]
-	vldr	d0, [src, #48]
-	vstr	d1, [dst, #40]
-	vldr	d1, [src, #56]
-	vstr	d0, [dst, #48]
-	add	src, src, #64
-	vstr	d1, [dst, #56]
-	add	dst, dst, #64
-	bge	1b
-	tst	tmp2, #0x3f
-	beq	.Ldone
-
-.Ltail63aligned:			/* Count in tmp2.  */
-	and	tmp1, tmp2, #0x38
-	add	dst, dst, tmp1
-	add	src, src, tmp1
-	rsb	tmp1, tmp1, #(56 - PC_OFFSET + INSN_SIZE)
-	add	pc, pc, tmp1
-
-	vldr	d0, [src, #-56]	/* 14 words to go.  */
-	vstr	d0, [dst, #-56]
-	vldr	d0, [src, #-48]	/* 12 words to go.  */
-	vstr	d0, [dst, #-48]
-	vldr	d0, [src, #-40]	/* 10 words to go.  */
-	vstr	d0, [dst, #-40]
-	vldr	d0, [src, #-32]	/* 8 words to go.  */
-	vstr	d0, [dst, #-32]
-	vldr	d0, [src, #-24]	/* 6 words to go.  */
-	vstr	d0, [dst, #-24]
-	vldr	d0, [src, #-16]	/* 4 words to go.  */
-	vstr	d0, [dst, #-16]
-	vldr	d0, [src, #-8]	/* 2 words to go.  */
-	vstr	d0, [dst, #-8]
-#else
-	sub	src, src, #8
-	sub	dst, dst, #8
-1:
-	ldrd	A_l, A_h, [src, #8]
-	strd	A_l, A_h, [dst, #8]
-	ldrd	A_l, A_h, [src, #16]
-	strd	A_l, A_h, [dst, #16]
-	ldrd	A_l, A_h, [src, #24]
-	strd	A_l, A_h, [dst, #24]
-	ldrd	A_l, A_h, [src, #32]
-	strd	A_l, A_h, [dst, #32]
-	ldrd	A_l, A_h, [src, #40]
-	strd	A_l, A_h, [dst, #40]
-	ldrd	A_l, A_h, [src, #48]
-	strd	A_l, A_h, [dst, #48]
-	ldrd	A_l, A_h, [src, #56]
-	strd	A_l, A_h, [dst, #56]
-	ldrd	A_l, A_h, [src, #64]!
-	strd	A_l, A_h, [dst, #64]!
-	subs	tmp2, tmp2, #64
-	bge	1b
-	tst	tmp2, #0x3f
-	bne	1f
-	ldr	tmp2,[sp], #FRAME_SIZE
-	bx	lr
-1:
-	add	src, src, #8
-	add	dst, dst, #8
-
-.Ltail63aligned:			/* Count in tmp2.  */
-	/* Copy up to 7 d-words of data.  Similar to Ltail63unaligned, but
-	   we know that the src and dest are 32-bit aligned so we can use
-	   LDRD/STRD to improve efficiency.  */
-	/* TMP2 is now negative, but we don't care about that.  The bottom
-	   six bits still tell us how many bytes are left to copy.  */
-
-	and	tmp1, tmp2, #0x38
-	add	dst, dst, tmp1
-	add	src, src, tmp1
-	rsb	tmp1, tmp1, #(56 - PC_OFFSET + INSN_SIZE)
-	add	pc, pc, tmp1
-	ldrd	A_l, A_h, [src, #-56]	/* 14 words to go.  */
-	strd	A_l, A_h, [dst, #-56]
-	ldrd	A_l, A_h, [src, #-48]	/* 12 words to go.  */
-	strd	A_l, A_h, [dst, #-48]
-	ldrd	A_l, A_h, [src, #-40]	/* 10 words to go.  */
-	strd	A_l, A_h, [dst, #-40]
-	ldrd	A_l, A_h, [src, #-32]	/* 8 words to go.  */
-	strd	A_l, A_h, [dst, #-32]
-	ldrd	A_l, A_h, [src, #-24]	/* 6 words to go.  */
-	strd	A_l, A_h, [dst, #-24]
-	ldrd	A_l, A_h, [src, #-16]	/* 4 words to go.  */
-	strd	A_l, A_h, [dst, #-16]
-	ldrd	A_l, A_h, [src, #-8]	/* 2 words to go.  */
-	strd	A_l, A_h, [dst, #-8]
-
-#endif
-	tst	tmp2, #4
-	ldrne	tmp1, [src], #4
-	strne	tmp1, [dst], #4
-	lsls	tmp2, tmp2, #31		/* Count (tmp2) now dead. */
-	ldrhcs	tmp1, [src], #2
-	ldrbne	tmp2, [src]
-	strhcs	tmp1, [dst], #2
-	strbne	tmp2, [dst]
-
-.Ldone:
-	ldr	tmp2, [sp], #FRAME_SIZE
-	bx	lr
-
-.Lcpy_body_long:			/* Count in tmp2.  */
-
-	/* Long copy.  We know that there's at least (prefetch_lines * 64)
-	   bytes to go.  */
-#ifdef USE_VFP
-	/* Don't use PLD.  Instead, read some data in advance of the current
-	   copy position into a register.  This should act like a PLD
-	   operation but we won't have to repeat the transfer.  */
-
-	vldr	d3, [src, #0]
-	vldr	d4, [src, #64]
-	vldr	d5, [src, #128]
-	vldr	d6, [src, #192]
-	vldr	d7, [src, #256]
-
-	vldr	d0, [src, #8]
-	vldr	d1, [src, #16]
-	vldr	d2, [src, #24]
-	add	src, src, #32
-
-	subs	tmp2, tmp2, #prefetch_lines * 64 * 2
-	blt	2f
-1:
-	cpy_line_vfp	d3, 0
-	cpy_line_vfp	d4, 64
-	cpy_line_vfp	d5, 128
-	add	dst, dst, #3 * 64
-	add	src, src, #3 * 64
-	cpy_line_vfp	d6, 0
-	cpy_line_vfp	d7, 64
-	add	dst, dst, #2 * 64
-	add	src, src, #2 * 64
-	subs	tmp2, tmp2, #prefetch_lines * 64
-	bge	1b
-
-2:
-	cpy_tail_vfp	d3, 0
-	cpy_tail_vfp	d4, 64
-	cpy_tail_vfp	d5, 128
-	add	src, src, #3 * 64
-	add	dst, dst, #3 * 64
-	cpy_tail_vfp	d6, 0
-	vstr	d7, [dst, #64]
-	vldr	d7, [src, #64]
-	vstr	d0, [dst, #64 + 8]
-	vldr	d0, [src, #64 + 8]
-	vstr	d1, [dst, #64 + 16]
-	vldr	d1, [src, #64 + 16]
-	vstr	d2, [dst, #64 + 24]
-	vldr	d2, [src, #64 + 24]
-	vstr	d7, [dst, #64 + 32]
-	add	src, src, #96
-	vstr	d0, [dst, #64 + 40]
-	vstr	d1, [dst, #64 + 48]
-	vstr	d2, [dst, #64 + 56]
-	add	dst, dst, #128
-	add	tmp2, tmp2, #prefetch_lines * 64
-	b	.Lcpy_body_medium
-#else
-	/* Long copy.  Use an SMS style loop to maximize the I/O
-	   bandwidth of the core.  We don't have enough spare registers
-	   to synthesise prefetching, so use PLD operations.  */
-	/* Pre-bias src and dst.  */
-	sub	src, src, #8
-	sub	dst, dst, #8
-	pld	[src, #8]
-	pld	[src, #72]
-	subs	tmp2, tmp2, #64
-	pld	[src, #136]
-	ldrd	A_l, A_h, [src, #8]
-	strd	B_l, B_h, [sp, #8]
-	ldrd	B_l, B_h, [src, #16]
-	strd	C_l, C_h, [sp, #16]
-	ldrd	C_l, C_h, [src, #24]
-	strd	D_l, D_h, [sp, #24]
-	pld	[src, #200]
-	ldrd	D_l, D_h, [src, #32]!
-	b	1f
-	.p2align	6
-2:
-	pld	[src, #232]
-	strd	A_l, A_h, [dst, #40]
-	ldrd	A_l, A_h, [src, #40]
-	strd	B_l, B_h, [dst, #48]
-	ldrd	B_l, B_h, [src, #48]
-	strd	C_l, C_h, [dst, #56]
-	ldrd	C_l, C_h, [src, #56]
-	strd	D_l, D_h, [dst, #64]!
-	ldrd	D_l, D_h, [src, #64]!
-	subs	tmp2, tmp2, #64
-1:
-	strd	A_l, A_h, [dst, #8]
-	ldrd	A_l, A_h, [src, #8]
-	strd	B_l, B_h, [dst, #16]
-	ldrd	B_l, B_h, [src, #16]
-	strd	C_l, C_h, [dst, #24]
-	ldrd	C_l, C_h, [src, #24]
-	strd	D_l, D_h, [dst, #32]
-	ldrd	D_l, D_h, [src, #32]
-	bcs	2b
-	/* Save the remaining bytes and restore the callee-saved regs.  */
-	strd	A_l, A_h, [dst, #40]
-	add	src, src, #40
-	strd	B_l, B_h, [dst, #48]
-	ldrd	B_l, B_h, [sp, #8]
-	strd	C_l, C_h, [dst, #56]
-	ldrd	C_l, C_h, [sp, #16]
-	strd	D_l, D_h, [dst, #64]
-	ldrd	D_l, D_h, [sp, #24]
-	add	dst, dst, #72
-	tst	tmp2, #0x3f
-	bne	.Ltail63aligned
-	ldr	tmp2, [sp], #FRAME_SIZE
-	bx	lr
-#endif
-
-.Lcpy_notaligned:
-	pld	[src]
-	pld	[src, #64]
-	/* There's at least 64 bytes to copy, but there is no mutual
-	   alignment.  */
-	/* Bring DST to 64-bit alignment.  */
-	lsls	tmp2, dst, #29
-	pld	[src, #(2 * 64)]
-	beq	1f
-	rsbs	tmp2, tmp2, #0
-	sub	count, count, tmp2, lsr #29
-	ldrmi	tmp1, [src], #4
-	strmi	tmp1, [dst], #4
-	lsls	tmp2, tmp2, #2
-	ldrbne	tmp1, [src], #1
-	ldrhcs	tmp2, [src], #2
-	strbne	tmp1, [dst], #1
-	strhcs	tmp2, [dst], #2
-1:
-	pld	[src, #(3 * 64)]
-	subs	count, count, #64
-	ldrmi	tmp2, [sp], #FRAME_SIZE
-	bmi	.Ltail63unaligned
-	pld	[src, #(4 * 64)]
-
-#ifdef USE_NEON
-	vld1.8	{d0-d3}, [src]!
-	vld1.8	{d4-d7}, [src]!
-	subs	count, count, #64
-	bmi	2f
-1:
-	pld	[src, #(4 * 64)]
-	vst1.8	{d0-d3}, [ALIGN (dst, 64)]!
-	vld1.8	{d0-d3}, [src]!
-	vst1.8	{d4-d7}, [ALIGN (dst, 64)]!
-	vld1.8	{d4-d7}, [src]!
-	subs	count, count, #64
-	bpl	1b
-2:
-	vst1.8	{d0-d3}, [ALIGN (dst, 64)]!
-	vst1.8	{d4-d7}, [ALIGN (dst, 64)]!
-	ands	count, count, #0x3f
-#else
-	/* Use an SMS style loop to maximize the I/O bandwidth.  */
-	sub	src, src, #4
-	sub	dst, dst, #8
-	subs	tmp2, count, #64	/* Use tmp2 for count.  */
-	ldr	A_l, [src, #4]
-	ldr	A_h, [src, #8]
-	strd	B_l, B_h, [sp, #8]
-	ldr	B_l, [src, #12]
-	ldr	B_h, [src, #16]
-	strd	C_l, C_h, [sp, #16]
-	ldr	C_l, [src, #20]
-	ldr	C_h, [src, #24]
-	strd	D_l, D_h, [sp, #24]
-	ldr	D_l, [src, #28]
-	ldr	D_h, [src, #32]!
-	b	1f
-	.p2align	6
-2:
-	pld	[src, #(5 * 64) - (32 - 4)]
-	strd	A_l, A_h, [dst, #40]
-	ldr	A_l, [src, #36]
-	ldr	A_h, [src, #40]
-	strd	B_l, B_h, [dst, #48]
-	ldr	B_l, [src, #44]
-	ldr	B_h, [src, #48]
-	strd	C_l, C_h, [dst, #56]
-	ldr	C_l, [src, #52]
-	ldr	C_h, [src, #56]
-	strd	D_l, D_h, [dst, #64]!
-	ldr	D_l, [src, #60]
-	ldr	D_h, [src, #64]!
-	subs	tmp2, tmp2, #64
-1:
-	strd	A_l, A_h, [dst, #8]
-	ldr	A_l, [src, #4]
-	ldr	A_h, [src, #8]
-	strd	B_l, B_h, [dst, #16]
-	ldr	B_l, [src, #12]
-	ldr	B_h, [src, #16]
-	strd	C_l, C_h, [dst, #24]
-	ldr	C_l, [src, #20]
-	ldr	C_h, [src, #24]
-	strd	D_l, D_h, [dst, #32]
-	ldr	D_l, [src, #28]
-	ldr	D_h, [src, #32]
-	bcs	2b
-
-	/* Save the remaining bytes and restore the callee-saved regs.  */
-	strd	A_l, A_h, [dst, #40]
-	add	src, src, #36
-	strd	B_l, B_h, [dst, #48]
-	ldrd	B_l, B_h, [sp, #8]
-	strd	C_l, C_h, [dst, #56]
-	ldrd	C_l, C_h, [sp, #16]
-	strd	D_l, D_h, [dst, #64]
-	ldrd	D_l, D_h, [sp, #24]
-	add	dst, dst, #72
-	ands	count, tmp2, #0x3f
-#endif
-	ldr	tmp2, [sp], #FRAME_SIZE
-	bne	.Ltail63unaligned
-	bx	lr
-END(memcpy)

libc/arch-arm/bionic/memset.S

@@ -25,115 +25,31 @@
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
+	.text
 
-#include <machine/cpu-features.h>
-#include <machine/asm.h>
+    .global memset
+    .type memset, %function
 
+    .global bzero
+    .type bzero, %function
+
+    .align
+	
 		/*
 		 * Optimized memset() for ARM.
          *
          * memset() returns its first argument.
 		 */
-
-#if defined(__ARM_NEON__)
-    .fpu    neon
-#endif
-
-ENTRY(bzero)
+	
+bzero:
         mov     r2, r1
         mov     r1, #0
-        // Fall through to memset...
-END(bzero)
-
-ENTRY(memset)
-#if defined(__ARM_NEON__)
-
-#ifdef  NEON_MEMSET_DIVIDER
-        cmp         r2, #NEON_MEMSET_DIVIDER
-        bhi         11f
-#endif
-        .save       {r0}
-        stmfd       sp!, {r0}
-
-        vdup.8      q0, r1
-
-#ifndef NEON_UNALIGNED_ACCESS
-        /* do we have at least 16-bytes to write (needed for alignment below) */
-        cmp         r2, #16
-        blo         3f
-
-        /* align destination to 16 bytes for the write-buffer */
-        rsb         r3, r0, #0
-        ands        r3, r3, #0xF
-        beq         2f
-
-        /* write up to 15-bytes (count in r3) */
-        sub         r2, r2, r3
-        movs        ip, r3, lsl #31
-        strmib      r1, [r0], #1
-        strcsb      r1, [r0], #1
-        strcsb      r1, [r0], #1
-        movs        ip, r3, lsl #29
-        bge         1f
-
-        // writes 4 bytes, 32-bits aligned
-        vst1.32     {d0[0]}, [r0, :32]!
-1:      bcc         2f
-
-        // writes 8 bytes, 64-bits aligned
-        vst1.8      {d0}, [r0, :64]!
-2:
-#endif
-        /* make sure we have at least 32 bytes to write */
-        subs        r2, r2, #32
-        blo         2f
-        vmov        q1, q0
-
-1:      /* The main loop writes 32 bytes at a time */
-        subs        r2, r2, #32
-#ifndef NEON_UNALIGNED_ACCESS
-        vst1.8      {d0 - d3}, [r0, :128]!
-#else
-        vst1.8      {d0 - d3}, [r0]!
-#endif
-        bhs         1b
-
-2:      /* less than 32 left */
-        add         r2, r2, #32
-        tst         r2, #0x10
-        beq         3f
-
-        // writes 16 bytes, 128-bits aligned
-#ifndef NEON_UNALIGNED_ACCESS
-        vst1.8      {d0, d1}, [r0, :128]!
-#else
-        vst1.8      {d0, d1}, [r0]!
-#endif
-3:      /* write up to 15-bytes (count in r2) */
-        movs        ip, r2, lsl #29
-        bcc         1f
-        vst1.8      {d0}, [r0]!
-1:      bge         2f
-        vst1.32     {d0[0]}, [r0]!
-2:      movs        ip, r2, lsl #31
-        strmib      r1, [r0], #1
-        strcsb      r1, [r0], #1
-        strcsb      r1, [r0], #1
-        ldmfd       sp!, {r0}
-        bx          lr
-11:
-#endif
-
-        /*
-         * Optimized memset() for ARM.
-         *
-         * memset() returns its first argument.
-         */
 
+memset:	
 		/* compute the offset to align the destination
 		 * offset = (4-(src&3))&3 = -src & 3
 		 */
-
+        .fnstart
         .save       {r0, r4-r7, lr}
 		stmfd		sp!, {r0, r4-r7, lr}
 		rsb			r3, r0, #0
@@ -161,7 +77,7 @@ ENTRY(memset)
         mov         r5, r1
         mov         r6, r1
         mov         r7, r1
-
+        
 		rsb         r3, r0, #0
 		ands		r3, r3, #0x1C
 		beq         3f
@@ -169,7 +85,7 @@ ENTRY(memset)
 		andhi		r3, r2, #0x1C
 		sub         r2, r2, r3
 
-		/* conditionally writes 0 to 7 words (length in r3) */
+		/* conditionnaly writes 0 to 7 words (length in r3) */
 		movs		r3, r3, lsl #28
 		stmcsia		r0!, {r1, lr}
 		stmcsia		r0!, {r1, lr}
@@ -186,7 +102,7 @@ ENTRY(memset)
         bhs         1b
 2:      add         r2, r2, #32
 
-		/* conditionally stores 0 to 31 bytes */
+		/* conditionnaly stores 0 to 31 bytes */
 		movs		r2, r2, lsl #28
 		stmcsia		r0!, {r1,r3,r12,lr}
 		stmmiia		r0!, {r1, lr}
@@ -197,4 +113,5 @@ ENTRY(memset)
 		strcsb		r1, [r0]
         ldmfd		sp!, {r0, r4-r7, lr}
         bx          lr
-END(memset)
+        .fnend
+    

libc/arch-arm/bionic/setjmp.S

@@ -79,7 +79,6 @@ ENTRY(setjmp)
 
 	mov	r0, #0x00000000
 	bx      lr
-END(setjmp)
 
 .Lsetjmp_magic:
 	.word	_JB_MAGIC_SETJMP
@@ -139,4 +138,3 @@ botch:
 	bl	PIC_SYM(_C_LABEL(longjmperror), PLT)
 	bl	PIC_SYM(_C_LABEL(abort), PLT)
 	b	. - 8		/* Cannot get here */
-END(longjmp)

libc/arch-arm/bionic/sigsetjmp.S

@@ -33,8 +33,6 @@
  * SUCH DAMAGE.
  */
 
-#define _ALIGN_TEXT .align 0
-
 #include <machine/asm.h>
 #include <machine/setjmp.h>
 
@@ -52,7 +50,6 @@ ENTRY(sigsetjmp)
 	teq	r1, #0
 	beq	PIC_SYM(_C_LABEL(_setjmp), PLT)
 	b	PIC_SYM(_C_LABEL(setjmp), PLT)
-END(sigsetjmp)
 
 .L_setjmp_magic:
 	.word	_JB_MAGIC__SETJMP
@@ -63,4 +60,3 @@ ENTRY(siglongjmp)
 	teq	r2, r3
 	beq	PIC_SYM(_C_LABEL(_longjmp), PLT)
 	b	PIC_SYM(_C_LABEL(longjmp), PLT)
-END(siglongjmp)

libc/arch-arm/bionic/strcmp.S

@@ -1,317 +0,0 @@
-/*
- * Copyright (c) 2011 The Android Open Source Project
- * Copyright (c) 2008 ARM Ltd
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the company may not be used to endorse or promote
- *    products derived from this software without specific prior written
- *    permission.
- *
- * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <machine/cpu-features.h>
-#include <machine/asm.h>
-
-	.text
-
-#ifdef __ARMEB__
-#define SHFT2LSB lsl
-#define SHFT2LSBEQ lsleq
-#define SHFT2MSB lsr
-#define SHFT2MSBEQ lsreq
-#define MSB 0x000000ff
-#define LSB 0xff000000
-#else
-#define SHFT2LSB lsr
-#define SHFT2LSBEQ lsreq
-#define SHFT2MSB lsl
-#define SHFT2MSBEQ lsleq
-#define MSB 0xff000000
-#define LSB 0x000000ff
-#endif
-
-#define magic1(REG) REG
-#define magic2(REG) REG, lsl #7
-
-ENTRY(strcmp)
-	PLD(r0, #0)
-	PLD(r1, #0)
-	eor	r2, r0, r1
-	tst	r2, #3
-
-	/* Strings not at same byte offset from a word boundary.  */
-	bne	.Lstrcmp_unaligned
-	ands	r2, r0, #3
-	bic	r0, r0, #3
-	bic	r1, r1, #3
-	ldr	ip, [r0], #4
-	it	eq
-	ldreq	r3, [r1], #4
-	beq	1f
-
-	/* Although s1 and s2 have identical initial alignment, they are
-	 * not currently word aligned.  Rather than comparing bytes,
-	 * make sure that any bytes fetched from before the addressed
-	 * bytes are forced to 0xff.  Then they will always compare
-	 * equal.
-	 */
-	eor	r2, r2, #3
-	lsl	r2, r2, #3
-	mvn	r3, #MSB
-	SHFT2LSB	r2, r3, r2
-	ldr	r3, [r1], #4
-	orr	ip, ip, r2
-	orr	r3, r3, r2
-1:
-	/* Load the 'magic' constant 0x01010101. */
-	str	r4, [sp, #-4]!
-	mov	r4, #1
-	orr	r4, r4, r4, lsl #8
-	orr	r4, r4, r4, lsl #16
-	.p2align	2
-4:
-	PLD(r0, #8)
-	PLD(r1, #8)
-	sub	r2, ip, magic1(r4)
-	cmp	ip, r3
-	itttt	eq
-
-	/* check for any zero bytes in first word */
-	biceq	r2, r2, ip
-	tsteq	r2, magic2(r4)
-	ldreq	ip, [r0], #4
-	ldreq	r3, [r1], #4
-	beq	4b
-2:
-	/* There's a zero or a different byte in the word */
-	SHFT2MSB	r0, ip, #24
-	SHFT2LSB	ip, ip, #8
-	cmp	r0, #1
-	it	cs
-	cmpcs	r0, r3, SHFT2MSB #24
-	it	eq
-	SHFT2LSBEQ r3, r3, #8
-	beq	2b
-	/* On a big-endian machine, r0 contains the desired byte in bits
-	 * 0-7; on a little-endian machine they are in bits 24-31.  In
-	 * both cases the other bits in r0 are all zero.  For r3 the
-	 * interesting byte is at the other end of the word, but the
-	 * other bits are not necessarily zero.  We need a signed result
-	 * representing the differnece in the unsigned bytes, so for the
-	 * little-endian case we can't just shift the interesting bits up.
-	 */
-#ifdef __ARMEB__
-	sub	r0, r0, r3, lsr #24
-#else
-	and	r3, r3, #255
-	/* No RSB instruction in Thumb2 */
-#ifdef __thumb2__
-	lsr	r0, r0, #24
-	sub	r0, r0, r3
-#else
-	rsb	r0, r3, r0, lsr #24
-#endif
-#endif
-	ldr	r4, [sp], #4
-	bx	lr
-
-.Lstrcmp_unaligned:
-	wp1 .req r0
-	wp2 .req r1
-	b1  .req r2
-	w1  .req r4
-	w2  .req r5
-	t1  .req ip
-	@ r3 is scratch
-
-	/* First of all, compare bytes until wp1(sp1) is word-aligned. */
-1:
-	tst	wp1, #3
-	beq	2f
-	ldrb	r2, [wp1], #1
-	ldrb	r3, [wp2], #1
-	cmp	r2, #1
-	it	cs
-	cmpcs	r2, r3
-	beq	1b
-	sub	r0, r2, r3
-	bx	lr
-
-2:
-	str	r5, [sp, #-4]!
-	str	r4, [sp, #-4]!
-	mov	b1, #1
-	orr	b1, b1, b1, lsl #8
-	orr	b1, b1, b1, lsl #16
-
-	and	t1, wp2, #3
-	bic	wp2, wp2, #3
-	ldr	w1, [wp1], #4
-	ldr	w2, [wp2], #4
-	cmp	t1, #2
-	beq	2f
-	bhi	3f
-
-	/* Critical inner Loop: Block with 3 bytes initial overlap */
-	.p2align	2
-1:
-	bic	t1, w1, #MSB
-	cmp	t1, w2, SHFT2LSB #8
-	sub	r3, w1, b1
-	bic	r3, r3, w1
-	bne	4f
-	ands	r3, r3, b1, lsl #7
-	it	eq
-	ldreq	w2, [wp2], #4
-	bne	5f
-	eor	t1, t1, w1
-	cmp	t1, w2, SHFT2MSB #24
-	bne	6f
-	ldr	w1, [wp1], #4
-	b	1b
-4:
-	SHFT2LSB	w2, w2, #8
-	b	8f
-
-5:
-#ifdef __ARMEB__
-	/* The syndrome value may contain false ones if the string ends
-	 * with the bytes 0x01 0x00
-	 */
-	tst	w1, #0xff000000
-	itt	ne
-	tstne	w1, #0x00ff0000
-	tstne	w1, #0x0000ff00
-	beq	7f
-#else
-	bics	r3, r3, #0xff000000
-	bne	7f
-#endif
-	ldrb	w2, [wp2]
-	SHFT2LSB	t1, w1, #24
-#ifdef __ARMEB__
-	lsl	w2, w2, #24
-#endif
-	b	8f
-
-6:
-	SHFT2LSB	t1, w1, #24
-	and	w2, w2, #LSB
-	b	8f
-
-	/* Critical inner Loop: Block with 2 bytes initial overlap */
-	.p2align	2
-2:
-	SHFT2MSB	t1, w1, #16
-	sub	r3, w1, b1
-	SHFT2LSB	t1, t1, #16
-	bic	r3, r3, w1
-	cmp	t1, w2, SHFT2LSB #16
-	bne	4f
-	ands	r3, r3, b1, lsl #7
-	it	eq
-	ldreq	w2, [wp2], #4
-	bne	5f
-	eor	t1, t1, w1
-	cmp	t1, w2, SHFT2MSB #16
-	bne	6f
-	ldr	w1, [wp1], #4
-	b	2b
-
-5:
-#ifdef __ARMEB__
-	/* The syndrome value may contain false ones if the string ends
-	 * with the bytes 0x01 0x00
-	 */
-	tst	w1, #0xff000000
-	it	ne
-	tstne	w1, #0x00ff0000
-	beq	7f
-#else
-	lsls	r3, r3, #16
-	bne	7f
-#endif
-	ldrh	w2, [wp2]
-	SHFT2LSB	t1, w1, #16
-#ifdef __ARMEB__
-	lsl	w2, w2, #16
-#endif
-	b	8f
-
-6:
-	SHFT2MSB	w2, w2, #16
-	SHFT2LSB	t1, w1, #16
-4:
-	SHFT2LSB	w2, w2, #16
-	b	8f
-
-	/* Critical inner Loop: Block with 1 byte initial overlap */
-	.p2align	2
-3:
-	and	t1, w1, #LSB
-	cmp	t1, w2, SHFT2LSB #24
-	sub	r3, w1, b1
-	bic	r3, r3, w1
-	bne	4f
-	ands	r3, r3, b1, lsl #7
-	it	eq
-	ldreq	w2, [wp2], #4
-	bne	5f
-	eor	t1, t1, w1
-	cmp	t1, w2, SHFT2MSB #8
-	bne	6f
-	ldr	w1, [wp1], #4
-	b	3b
-4:
-	SHFT2LSB	w2, w2, #24
-	b	8f
-5:
-	/* The syndrome value may contain false ones if the string ends
-	 * with the bytes 0x01 0x00
-	 */
-	tst	w1, #LSB
-	beq	7f
-	ldr	w2, [wp2], #4
-6:
-	SHFT2LSB	t1, w1, #8
-	bic	w2, w2, #MSB
-	b	8f
-7:
-	mov	r0, #0
-	ldr	r4, [sp], #4
-	ldr	r5, [sp], #4
-	bx	lr
-
-8:
-	and	r2, t1, #LSB
-	and	r0, w2, #LSB
-	cmp	r0, #1
-	it	cs
-	cmpcs	r0, r2
-	itt	eq
-	SHFT2LSBEQ	t1, t1, #8
-	SHFT2LSBEQ	w2, w2, #8
-	beq	8b
-	sub	r0, r2, r0
-	ldr	r4, [sp], #4
-	ldr	r5, [sp], #4
-	bx	lr
-END(strcmp)

libc/arch-arm/bionic/strcmp.a15.S

@@ -1,787 +0,0 @@
-/*
- * Copyright (c) 2013 ARM Ltd
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the company may not be used to endorse or promote
- *    products derived from this software without specific prior written
- *    permission.
- *
- * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "arm_asm.h"
-
-#ifdef __ARMEB__
-#define S2LOMEM lsl
-#define S2LOMEMEQ lsleq
-#define S2HIMEM lsr
-#define MSB 0x000000ff
-#define LSB 0xff000000
-#define BYTE0_OFFSET 24
-#define BYTE1_OFFSET 16
-#define BYTE2_OFFSET 8
-#define BYTE3_OFFSET 0
-#else /* not  __ARMEB__ */
-#define S2LOMEM lsr
-#define S2LOMEMEQ lsreq
-#define S2HIMEM lsl
-#define BYTE0_OFFSET 0
-#define BYTE1_OFFSET 8
-#define BYTE2_OFFSET 16
-#define BYTE3_OFFSET 24
-#define MSB 0xff000000
-#define LSB 0x000000ff
-#endif /* not  __ARMEB__ */
-
-.syntax         unified
-
-#if defined (__thumb__)
-        .thumb
-        .thumb_func
-#endif
-        .global strcmp
-        .type   strcmp, %function
-strcmp:
-
-#if (defined (__thumb__) && !defined (__thumb2__))
-1:
-        ldrb    r2, [r0]
-        ldrb    r3, [r1]
-        adds    r0, r0, #1
-        adds    r1, r1, #1
-        cmp     r2, #0
-        beq     2f
-        cmp     r2, r3
-        beq     1b
-2:
-        subs    r0, r2, r3
-        bx      lr
-#elif (defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED))
-1:
-        ldrb    r2, [r0], #1
-        ldrb    r3, [r1], #1
-        cmp     r2, #1
-        it      cs
-        cmpcs   r2, r3
-        beq     1b
-        subs    r0, r2, r3
-        RETURN
-
-
-#elif (defined (_ISA_THUMB_2) || defined (_ISA_ARM_6))
-      /* Use LDRD whenever possible.  */
-
-/* The main thing to look out for when comparing large blocks is that
-   the loads do not cross a page boundary when loading past the index
-   of the byte with the first difference or the first string-terminator.
-
-   For example, if the strings are identical and the string-terminator
-   is at index k, byte by byte comparison will not load beyond address
-   s1+k and s2+k; word by word comparison may load up to 3 bytes beyond
-   k; double word - up to 7 bytes.  If the load of these bytes crosses
-   a page boundary, it might cause a memory fault (if the page is not mapped)
-   that would not have happened in byte by byte comparison.
-
-   If an address is (double) word aligned, then a load of a (double) word
-   from that address will not cross a page boundary.
-   Therefore, the algorithm below considers word and double-word alignment
-   of strings separately.  */
-
-/* High-level description of the algorithm.
-
-   * The fast path: if both strings are double-word aligned,
-     use LDRD to load two words from each string in every loop iteration.
-   * If the strings have the same offset from a word boundary,
-     use LDRB to load and compare byte by byte until
-     the first string is aligned to a word boundary (at most 3 bytes).
-     This is optimized for quick return on short unaligned strings.
-   * If the strings have the same offset from a double-word boundary,
-     use LDRD to load two words from each string in every loop iteration, as in the fast path.
-   * If the strings do not have the same offset from a double-word boundary,
-     load a word from the second string before the loop to initialize the queue.
-     Use LDRD to load two words from every string in every loop iteration.
-     Inside the loop, load the second word from the second string only after comparing
-     the first word, using the queued value, to guarantee safety across page boundaries.
-   * If the strings do not have the same offset from a word boundary,
-     use LDR and a shift queue. Order of loads and comparisons matters,
-     similarly to the previous case.
-
-   * Use UADD8 and SEL to compare words, and use REV and CLZ to compute the return value.
-   * The only difference between ARM and Thumb modes is the use of CBZ instruction.
-   * The only difference between big and little endian is the use of REV in little endian
-     to compute the return value, instead of MOV.
-   * No preload. [TODO.]
-*/
-
-        .macro m_cbz reg label
-#ifdef __thumb2__
-        cbz     \reg, \label
-#else   /* not defined __thumb2__ */
-        cmp     \reg, #0
-        beq     \label
-#endif /* not defined __thumb2__ */
-        .endm /* m_cbz */
-
-        .macro m_cbnz reg label
-#ifdef __thumb2__
-        cbnz    \reg, \label
-#else   /* not defined __thumb2__ */
-        cmp     \reg, #0
-        bne     \label
-#endif /* not defined __thumb2__ */
-        .endm /* m_cbnz */
-
-        .macro  init
-        /* Macro to save temporary registers and prepare magic values.  */
-        subs    sp, sp, #16
-        strd    r4, r5, [sp, #8]
-        strd    r6, r7, [sp]
-        mvn     r6, #0  /* all F */
-        mov     r7, #0  /* all 0 */
-        .endm   /* init */
-
-        .macro  magic_compare_and_branch w1 w2 label
-        /* Macro to compare registers w1 and w2 and conditionally branch to label.  */
-        cmp     \w1, \w2        /* Are w1 and w2 the same?  */
-        magic_find_zero_bytes \w1
-        it      eq
-        cmpeq   ip, #0          /* Is there a zero byte in w1?  */
-        bne     \label
-        .endm /* magic_compare_and_branch */
-
-        .macro  magic_find_zero_bytes w1
-        /* Macro to find all-zero bytes in w1, result is in ip.  */
-#if (defined (__ARM_FEATURE_DSP))
-        uadd8   ip, \w1, r6
-        sel     ip, r7, r6
-#else /* not defined (__ARM_FEATURE_DSP) */
-        /* __ARM_FEATURE_DSP is not defined for some Cortex-M processors.
-        Coincidently, these processors only have Thumb-2 mode, where we can use the
-        the (large) magic constant available directly as an immediate in instructions.
-        Note that we cannot use the magic constant in ARM mode, where we need
-        to create the constant in a register.  */
-        sub     ip, \w1, #0x01010101
-        bic     ip, ip, \w1
-        and     ip, ip, #0x80808080
-#endif /* not defined (__ARM_FEATURE_DSP) */
-        .endm /* magic_find_zero_bytes */
-
-        .macro  setup_return w1 w2
-#ifdef __ARMEB__
-        mov     r1, \w1
-        mov     r2, \w2
-#else /* not  __ARMEB__ */
-        rev     r1, \w1
-        rev     r2, \w2
-#endif /* not  __ARMEB__ */
-        .endm /* setup_return */
-
-        /*
-        optpld r0, #0
-        optpld r1, #0
-        */
-
-        /* Are both strings double-word aligned?  */
-        orr     ip, r0, r1
-        tst     ip, #7
-        bne     do_align
-
-        /* Fast path.  */
-        init
-
-doubleword_aligned:
-
-        /* Get here when the strings to compare are double-word aligned.  */
-        /* Compare two words in every iteration.  */
-        .p2align        2
-2:
-        /*
-        optpld r0, #16
-        optpld r1, #16
-        */
-
-        /* Load the next double-word from each string.  */
-        ldrd    r2, r3, [r0], #8
-        ldrd    r4, r5, [r1], #8
-
-        magic_compare_and_branch w1=r2, w2=r4, label=return_24
-        magic_compare_and_branch w1=r3, w2=r5, label=return_35
-        b       2b
-
-do_align:
-        /* Is the first string word-aligned?  */
-        ands    ip, r0, #3
-        beq     word_aligned_r0
-
-        /* Fast compare byte by byte until the first string is word-aligned.  */
-        /* The offset of r0 from a word boundary is in ip. Thus, the number of bytes
-        to read until the next word boudnary is 4-ip.  */
-        bic     r0, r0, #3
-        ldr     r2, [r0], #4
-        lsls    ip, ip, #31
-        beq     byte2
-        bcs     byte3
-
-byte1:
-        ldrb    ip, [r1], #1
-        uxtb    r3, r2, ror #BYTE1_OFFSET
-        subs    ip, r3, ip
-        bne     fast_return
-        m_cbz   reg=r3, label=fast_return
-
-byte2:
-        ldrb    ip, [r1], #1
-        uxtb    r3, r2, ror #BYTE2_OFFSET
-        subs    ip, r3, ip
-        bne     fast_return
-        m_cbz   reg=r3, label=fast_return
-
-byte3:
-        ldrb    ip, [r1], #1
-        uxtb    r3, r2, ror #BYTE3_OFFSET
-        subs    ip, r3, ip
-        bne     fast_return
-        m_cbnz  reg=r3, label=word_aligned_r0
-
-fast_return:
-        mov     r0, ip
-        bx      lr
-
-word_aligned_r0:
-        init
-        /* The first string is word-aligned.  */
-        /* Is the second string word-aligned?  */
-        ands    ip, r1, #3
-        bne     strcmp_unaligned
-
-word_aligned:
-        /* The strings are word-aligned. */
-        /* Is the first string double-word aligned?  */
-        tst     r0, #4
-        beq     doubleword_aligned_r0
-
-        /* If r0 is not double-word aligned yet, align it by loading
-        and comparing the next word from each string.  */
-        ldr     r2, [r0], #4
-        ldr     r4, [r1], #4
-        magic_compare_and_branch w1=r2 w2=r4 label=return_24
-
-doubleword_aligned_r0:
-        /* Get here when r0 is double-word aligned.  */
-        /* Is r1 doubleword_aligned?  */
-        tst     r1, #4
-        beq     doubleword_aligned
-
-        /* Get here when the strings to compare are word-aligned,
-        r0 is double-word aligned, but r1 is not double-word aligned.  */
-
-        /* Initialize the queue.  */
-        ldr     r5, [r1], #4
-
-        /* Compare two words in every iteration.  */
-        .p2align        2
-3:
-        /*
-        optpld r0, #16
-        optpld r1, #16
-        */
-
-        /* Load the next double-word from each string and compare.  */
-        ldrd    r2, r3, [r0], #8
-        magic_compare_and_branch w1=r2 w2=r5 label=return_25
-        ldrd    r4, r5, [r1], #8
-        magic_compare_and_branch w1=r3 w2=r4 label=return_34
-        b       3b
-
-        .macro miscmp_word offsetlo offsethi
-        /* Macro to compare misaligned strings.  */
-        /* r0, r1 are word-aligned, and at least one of the strings
-        is not double-word aligned.  */
-        /* Compare one word in every loop iteration.  */
-        /* OFFSETLO is the original bit-offset of r1 from a word-boundary,
-        OFFSETHI is 32 - OFFSETLO (i.e., offset from the next word).  */
-
-        /* Initialize the shift queue.  */
-        ldr     r5, [r1], #4
-
-        /* Compare one word from each string in every loop iteration.  */
-        .p2align        2
-7:
-        ldr     r3, [r0], #4
-        S2LOMEM r5, r5, #\offsetlo
-        magic_find_zero_bytes w1=r3
-        cmp     r7, ip, S2HIMEM #\offsetlo
-        and     r2, r3, r6, S2LOMEM #\offsetlo
-        it      eq
-        cmpeq   r2, r5
-        bne     return_25
-        ldr     r5, [r1], #4
-        cmp     ip, #0
-        eor r3, r2, r3
-        S2HIMEM r2, r5, #\offsethi
-        it      eq
-        cmpeq   r3, r2
-        bne     return_32
-        b       7b
-        .endm /* miscmp_word */
-
-strcmp_unaligned:
-        /* r0 is word-aligned, r1 is at offset ip from a word.  */
-        /* Align r1 to the (previous) word-boundary.  */
-        bic     r1, r1, #3
-
-        /* Unaligned comparison word by word using LDRs. */
-        cmp     ip, #2
-        beq     miscmp_word_16                    /* If ip == 2.  */
-        bge     miscmp_word_24                    /* If ip == 3.  */
-        miscmp_word offsetlo=8 offsethi=24        /* If ip == 1.  */
-miscmp_word_16:  miscmp_word offsetlo=16 offsethi=16
-miscmp_word_24:  miscmp_word offsetlo=24 offsethi=8
-
-
-return_32:
-        setup_return w1=r3, w2=r2
-        b       do_return
-return_34:
-        setup_return w1=r3, w2=r4
-        b       do_return
-return_25:
-        setup_return w1=r2, w2=r5
-        b       do_return
-return_35:
-        setup_return w1=r3, w2=r5
-        b       do_return
-return_24:
-        setup_return w1=r2, w2=r4
-
-do_return:
-
-#ifdef __ARMEB__
-        mov     r0, ip
-#else /* not  __ARMEB__ */
-        rev     r0, ip
-#endif /* not  __ARMEB__ */
-
-        /* Restore temporaries early, before computing the return value.  */
-        ldrd    r6, r7, [sp]
-        ldrd    r4, r5, [sp, #8]
-        adds    sp, sp, #16
-
-        /* There is a zero or a different byte between r1 and r2.  */
-        /* r0 contains a mask of all-zero bytes in r1.  */
-        /* Using r0 and not ip here because cbz requires low register.  */
-        m_cbz   reg=r0, label=compute_return_value
-        clz     r0, r0
-        /* r0 contains the number of bits on the left of the first all-zero byte in r1.  */
-        rsb     r0, r0, #24
-        /* Here, r0 contains the number of bits on the right of the first all-zero byte in r1.  */
-        lsr     r1, r1, r0
-        lsr     r2, r2, r0
-
-compute_return_value:
-        movs    r0, #1
-        cmp     r1, r2
-        /* The return value is computed as follows.
-        If r1>r2 then (C==1 and Z==0) and LS doesn't hold and r0 is #1 at return.
-        If r1<r2 then (C==0 and Z==0) and we execute SBC with carry_in=0,
-        which means r0:=r0-r0-1 and r0 is #-1 at return.
-        If r1=r2 then (C==1 and Z==1) and we execute SBC with carry_in=1,
-        which means r0:=r0-r0 and r0 is #0 at return.
-        (C==0 and Z==1) cannot happen because the carry bit is "not borrow".  */
-        it      ls
-        sbcls   r0, r0, r0
-        bx      lr
-
-
-#else   /* !(defined (_ISA_THUMB_2) || defined (_ISA_ARM_6)
-             defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED) ||
-             (defined (__thumb__) && !defined (__thumb2__))) */
-
-        /* Use LDR whenever possible. */
-
-#ifdef __thumb2__
-#define magic1(REG) 0x01010101
-#define magic2(REG) 0x80808080
-#else
-#define magic1(REG) REG
-#define magic2(REG) REG, lsl #7
-#endif
-
-        optpld  r0
-        optpld  r1
-        eor     r2, r0, r1
-        tst     r2, #3
-        /* Strings not at same byte offset from a word boundary.  */
-        bne     strcmp_unaligned
-        ands    r2, r0, #3
-        bic     r0, r0, #3
-        bic     r1, r1, #3
-        ldr     ip, [r0], #4
-        it      eq
-        ldreq   r3, [r1], #4
-        beq     1f
-        /* Although s1 and s2 have identical initial alignment, they are
-        not currently word aligned.  Rather than comparing bytes,
-    make sure that any bytes fetched from before the addressed
-    bytes are forced to 0xff.  Then they will always compare
-    equal.  */
-        eor     r2, r2, #3
-        lsl     r2, r2, #3
-        mvn     r3, MSB
-        S2LOMEM        r2, r3, r2
-        ldr     r3, [r1], #4
-        orr     ip, ip, r2
-        orr     r3, r3, r2
-1:
-#ifndef __thumb2__
-              /* Load the 'magic' constant 0x01010101.  */
-        str     r4, [sp, #-4]!
-        mov     r4, #1
-        orr     r4, r4, r4, lsl #8
-        orr     r4, r4, r4, lsl #16
-#endif
-        .p2align        2
-4:
-        optpld  r0, #8
-        optpld  r1, #8
-        sub     r2, ip, magic1(r4)
-        cmp     ip, r3
-        itttt   eq
-        /* check for any zero bytes in first word */
-        biceq   r2, r2, ip
-        tsteq   r2, magic2(r4)
-        ldreq   ip, [r0], #4
-        ldreq   r3, [r1], #4
-        beq     4b
-2:
-        /* There's a zero or a different byte in the word */
-        S2HIMEM  r0, ip, #24
-        S2LOMEM  ip, ip, #8
-        cmp     r0, #1
-        it      cs
-        cmpcs   r0, r3, S2HIMEM #24
-        it      eq
-        S2LOMEMEQ r3, r3, #8
-        beq     2b
-        /* On a big-endian machine, r0 contains the desired byte in bits
-        0-7; on a little-endian machine they are in bits 24-31.  In
-        both cases the other bits in r0 are all zero.  For r3 the
-        interesting byte is at the other end of the word, but the
-        other bits are not necessarily zero.  We need a signed result
-        representing the differnece in the unsigned bytes, so for the
-        little-endian case we can't just shift the interesting bits
-        up.  */
-#ifdef __ARMEB__
-        sub     r0, r0, r3, lsr #24
-#else
-        and     r3, r3, #255
-#ifdef __thumb2__
-        /* No RSB instruction in Thumb2 */
-        lsr     r0, r0, #24
-        sub     r0, r0, r3
-#else
-        rsb     r0, r3, r0, lsr #24
-#endif
-#endif
-#ifndef __thumb2__
-        ldr     r4, [sp], #4
-#endif
-        RETURN
-
-
-strcmp_unaligned:
-
-#if 0
-        /* The assembly code below is based on the following alogrithm.  */
-#ifdef __ARMEB__
-#define RSHIFT <<
-#define LSHIFT >>
-#else
-#define RSHIFT >>
-#define LSHIFT <<
-#endif
-
-#define body(shift)                         \
-  mask = 0xffffffffU RSHIFT shift;                  \
-  w1 = *wp1++;                              \
-  w2 = *wp2++;                              \
-  do                                    \
-    {                                   \
-      t1 = w1 & mask;                           \
-      if (__builtin_expect(t1 != w2 RSHIFT shift, 0))           \
-    {                               \
-      w2 RSHIFT= shift;                     \
-      break;                            \
-    }                               \
-      if (__builtin_expect(((w1 - b1) & ~w1) & (b1 << 7), 0))       \
-    {                               \
-      /* See comment in assembler below re syndrome on big-endian */\
-      if ((((w1 - b1) & ~w1) & (b1 << 7)) & mask)           \
-        w2 RSHIFT= shift;                       \
-      else                              \
-        {                               \
-          w2 = *wp2;                        \
-          t1 = w1 RSHIFT (32 - shift);              \
-          w2 = (w2 LSHIFT (32 - shift)) RSHIFT (32 - shift);    \
-        }                               \
-      break;                            \
-    }                               \
-      w2 = *wp2++;                          \
-      t1 ^= w1;                             \
-      if (__builtin_expect(t1 != w2 LSHIFT (32 - shift), 0))        \
-    {                               \
-      t1 = w1 >> (32 - shift);                  \
-      w2 = (w2 << (32 - shift)) RSHIFT (32 - shift);        \
-      break;                            \
-    }                               \
-      w1 = *wp1++;                          \
-    } while (1)
-
-  const unsigned* wp1;
-  const unsigned* wp2;
-  unsigned w1, w2;
-  unsigned mask;
-  unsigned shift;
-  unsigned b1 = 0x01010101;
-  char c1, c2;
-  unsigned t1;
-
-  while (((unsigned) s1) & 3)
-    {
-      c1 = *s1++;
-      c2 = *s2++;
-      if (c1 == 0 || c1 != c2)
-    return c1 - (int)c2;
-    }
-  wp1 = (unsigned*) (((unsigned)s1) & ~3);
-  wp2 = (unsigned*) (((unsigned)s2) & ~3);
-  t1 = ((unsigned) s2) & 3;
-  if (t1 == 1)
-    {
-      body(8);
-    }
-  else if (t1 == 2)
-    {
-      body(16);
-    }
-  else
-    {
-      body (24);
-    }
-
-  do
-    {
-#ifdef __ARMEB__
-      c1 = (char) t1 >> 24;
-      c2 = (char) w2 >> 24;
-#else /* not  __ARMEB__ */
-      c1 = (char) t1;
-      c2 = (char) w2;
-#endif /* not  __ARMEB__ */
-      t1 RSHIFT= 8;
-      w2 RSHIFT= 8;
-    } while (c1 != 0 && c1 == c2);
-  return c1 - c2;
-#endif /* 0 */
-
-
-        wp1 .req r0
-        wp2 .req r1
-        b1  .req r2
-        w1  .req r4
-        w2  .req r5
-        t1  .req ip
-        @ r3 is scratch
-
-        /* First of all, compare bytes until wp1(sp1) is word-aligned. */
-1:
-        tst     wp1, #3
-        beq     2f
-        ldrb    r2, [wp1], #1
-        ldrb    r3, [wp2], #1
-        cmp     r2, #1
-        it      cs
-        cmpcs   r2, r3
-        beq     1b
-        sub     r0, r2, r3
-        RETURN
-
-2:
-        str     r5, [sp, #-4]!
-        str     r4, [sp, #-4]!
-        //stmfd   sp!, {r4, r5}
-        mov     b1, #1
-        orr     b1, b1, b1, lsl #8
-        orr     b1, b1, b1, lsl #16
-
-        and     t1, wp2, #3
-        bic     wp2, wp2, #3
-        ldr     w1, [wp1], #4
-        ldr     w2, [wp2], #4
-        cmp     t1, #2
-        beq     2f
-        bhi     3f
-
-        /* Critical inner Loop: Block with 3 bytes initial overlap */
-        .p2align        2
-1:
-        bic     t1, w1, MSB
-        cmp     t1, w2, S2LOMEM #8
-        sub     r3, w1, b1
-        bic     r3, r3, w1
-        bne     4f
-        ands    r3, r3, b1, lsl #7
-        it      eq
-        ldreq   w2, [wp2], #4
-        bne     5f
-        eor     t1, t1, w1
-        cmp     t1, w2, S2HIMEM #24
-        bne     6f
-        ldr     w1, [wp1], #4
-        b       1b
-4:
-        S2LOMEM        w2, w2, #8
-        b       8f
-
-5:
-#ifdef __ARMEB__
-        /* The syndrome value may contain false ones if the string ends
-        with the bytes 0x01 0x00 */
-        tst     w1, #0xff000000
-        itt     ne
-        tstne   w1, #0x00ff0000
-        tstne   w1, #0x0000ff00
-        beq     7f
-#else
-        bics    r3, r3, #0xff000000
-        bne     7f
-#endif
-        ldrb    w2, [wp2]
-        S2LOMEM  t1, w1, #24
-#ifdef __ARMEB__
-        lsl     w2, w2, #24
-#endif
-        b       8f
-
-6:
-        S2LOMEM  t1, w1, #24
-        and     w2, w2, LSB
-        b       8f
-
-        /* Critical inner Loop: Block with 2 bytes initial overlap */
-        .p2align        2
-2:
-        S2HIMEM  t1, w1, #16
-        sub     r3, w1, b1
-        S2LOMEM  t1, t1, #16
-        bic     r3, r3, w1
-        cmp     t1, w2, S2LOMEM #16
-        bne     4f
-        ands    r3, r3, b1, lsl #7
-        it      eq
-        ldreq   w2, [wp2], #4
-        bne     5f
-        eor     t1, t1, w1
-        cmp     t1, w2, S2HIMEM #16
-        bne     6f
-        ldr     w1, [wp1], #4
-        b       2b
-
-5:
-#ifdef __ARMEB__
-        /* The syndrome value may contain false ones if the string ends
-        with the bytes 0x01 0x00 */
-        tst     w1, #0xff000000
-        it      ne
-        tstne   w1, #0x00ff0000
-        beq     7f
-#else
-        lsls    r3, r3, #16
-        bne     7f
-#endif
-        ldrh    w2, [wp2]
-        S2LOMEM  t1, w1, #16
-#ifdef __ARMEB__
-        lsl     w2, w2, #16
-#endif
-        b       8f
-
-6:
-        S2HIMEM  w2, w2, #16
-        S2LOMEM  t1, w1, #16
-4:
-        S2LOMEM  w2, w2, #16
-        b       8f
-
-        /* Critical inner Loop: Block with 1 byte initial overlap */
-        .p2align        2
-3:
-        and     t1, w1, LSB
-        cmp     t1, w2, S2LOMEM #24
-        sub     r3, w1, b1
-        bic     r3, r3, w1
-        bne     4f
-        ands    r3, r3, b1, lsl #7
-        it      eq
-        ldreq   w2, [wp2], #4
-        bne     5f
-        eor     t1, t1, w1
-        cmp     t1, w2, S2HIMEM #8
-        bne     6f
-        ldr     w1, [wp1], #4
-        b       3b
-4:
-        S2LOMEM  w2, w2, #24
-        b       8f
-5:
-        /* The syndrome value may contain false ones if the string ends
-        with the bytes 0x01 0x00 */
-        tst     w1, LSB
-        beq     7f
-        ldr     w2, [wp2], #4
-6:
-        S2LOMEM  t1, w1, #8
-        bic     w2, w2, MSB
-        b       8f
-7:
-        mov     r0, #0
-        //ldmfd   sp!, {r4, r5}
-        ldr     r4, [sp], #4
-        ldr     r5, [sp], #4
-        RETURN
-8:
-        and     r2, t1, LSB
-        and     r0, w2, LSB
-        cmp     r0, #1
-        it      cs
-        cmpcs   r0, r2
-        itt     eq
-        S2LOMEMEQ        t1, t1, #8
-        S2LOMEMEQ        w2, w2, #8
-        beq     8b
-        sub     r0, r2, r0
-        //ldmfd   sp!, {r4, r5}
-        ldr     r4, [sp], #4
-        ldr     r5, [sp], #4
-        RETURN
-
-#endif /* !(defined (_ISA_THUMB_2) || defined (_ISA_ARM_6)
-            defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED) ||
-            (defined (__thumb__) && !defined (__thumb2__))) */

libc/arch-arm/bionic/strlen.c

@@ -33,16 +33,16 @@ size_t strlen(const char *s)
 {
     __builtin_prefetch(s);
     __builtin_prefetch(s+32);
-
+    
     union {
         const char      *b;
         const uint32_t  *w;
         uintptr_t       i;
     } u;
-
+    
     // these are some scratch variables for the asm code below
     uint32_t v, t;
-
+    
     // initialize the string length to zero
     size_t l = 0;
 
@@ -60,60 +60,52 @@ size_t strlen(const char *s)
     // We need to process 32 bytes per loop to schedule PLD properly
     // and achieve the maximum bus speed.
     asm(
-        "ldr     %[v], [%[s]], #4           \n"
+        "ldr     %[v], [ %[s] ], #4         \n"
         "sub     %[l], %[l], %[s]           \n"
         "0:                                 \n"
 #if __ARM_HAVE_PLD
-        "pld     [%[s], #64]                \n"
+        "pld     [ %[s], #64 ]              \n"
 #endif
         "sub     %[t], %[v], %[mask], lsr #7\n"
         "and     %[t], %[t], %[mask]        \n"
         "bics    %[t], %[t], %[v]           \n"
-        "it      eq                         \n"
-        "ldreq   %[v], [%[s]], #4           \n"
+        "ldreq   %[v], [ %[s] ], #4         \n"
 #if !defined(__OPTIMIZE_SIZE__)
         "bne     1f                         \n"
         "sub     %[t], %[v], %[mask], lsr #7\n"
         "and     %[t], %[t], %[mask]        \n"
         "bics    %[t], %[t], %[v]           \n"
-        "it      eq                         \n"
-        "ldreq   %[v], [%[s]], #4           \n"
+        "ldreq   %[v], [ %[s] ], #4         \n"
         "bne     1f                         \n"
         "sub     %[t], %[v], %[mask], lsr #7\n"
         "and     %[t], %[t], %[mask]        \n"
         "bics    %[t], %[t], %[v]           \n"
-        "it      eq                         \n"
-        "ldreq   %[v], [%[s]], #4           \n"
+        "ldreq   %[v], [ %[s] ], #4         \n"
         "bne     1f                         \n"
         "sub     %[t], %[v], %[mask], lsr #7\n"
         "and     %[t], %[t], %[mask]        \n"
         "bics    %[t], %[t], %[v]           \n"
-        "it      eq                         \n"
-        "ldreq   %[v], [%[s]], #4           \n"
+        "ldreq   %[v], [ %[s] ], #4         \n"
         "bne     1f                         \n"
         "sub     %[t], %[v], %[mask], lsr #7\n"
         "and     %[t], %[t], %[mask]        \n"
         "bics    %[t], %[t], %[v]           \n"
-        "it      eq                         \n"
-        "ldreq   %[v], [%[s]], #4           \n"
+        "ldreq   %[v], [ %[s] ], #4         \n"
         "bne     1f                         \n"
         "sub     %[t], %[v], %[mask], lsr #7\n"
         "and     %[t], %[t], %[mask]        \n"
         "bics    %[t], %[t], %[v]           \n"
-        "it      eq                         \n"
-        "ldreq   %[v], [%[s]], #4           \n"
+        "ldreq   %[v], [ %[s] ], #4         \n"
         "bne     1f                         \n"
         "sub     %[t], %[v], %[mask], lsr #7\n"
         "and     %[t], %[t], %[mask]        \n"
         "bics    %[t], %[t], %[v]           \n"
-        "it      eq                         \n"
-        "ldreq   %[v], [%[s]], #4           \n"
+        "ldreq   %[v], [ %[s] ], #4         \n"
         "bne     1f                         \n"
         "sub     %[t], %[v], %[mask], lsr #7\n"
         "and     %[t], %[t], %[mask]        \n"
         "bics    %[t], %[t], %[v]           \n"
-        "it      eq                         \n"
-        "ldreq   %[v], [%[s]], #4           \n"
+        "ldreq   %[v], [ %[s] ], #4         \n"
 #endif
         "beq     0b                         \n"
         "1:                                 \n"
@@ -125,14 +117,13 @@ size_t strlen(const char *s)
         "beq     2f                         \n"
         "add     %[l], %[l], #1             \n"
         "tst     %[v], #0xFF0000            \n"
-        "it      ne                         \n"
         "addne   %[l], %[l], #1             \n"
         "2:                                 \n"
         : [l]"=&r"(l), [v]"=&r"(v), [t]"=&r"(t), [s]"=&r"(u.b)
         : "%[l]"(l), "%[s]"(u.b), [mask]"r"(0x80808080UL)
         : "cc"
     );
-
+    
 done:
     return l;
 }

libc/arch-arm/bionic/syscall.S

@@ -25,22 +25,47 @@
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
+#include <sys/linux-syscalls.h>
 
-#include <linux/err.h>
-#include <machine/asm.h>
 
-ENTRY(syscall)
+	.text
+	.align 4
+	.type syscall,#function
+	.globl syscall
+ 
+	.text
+	.align
+
+#if __ARM_EABI__
+
+syscall:
     mov     ip, sp
-    stmfd   sp!, {r4, r5, r6, r7}
+    stmfd	sp!, {r4, r5, r6, r7}
     mov     r7, r0
     mov     r0, r1
     mov     r1, r2
     mov     r2, r3
-    ldmfd   ip, {r3, r4, r5, r6}
+    ldmfd	ip, {r3, r4, r5, r6}
     swi     #0
     ldmfd   sp!, {r4, r5, r6, r7}
-    cmn     r0, #(MAX_ERRNO + 1)
-    bxls    lr
-    neg     r0, r0
-    b       __set_errno
-END(syscall)
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno
+
+#else
+
+#ifndef __NR_syscall
+#define __NR_syscall    113
+#endif
+
+syscall:
+    stmfd   sp!, {r4, r5, lr}
+    ldr     r4, [sp, #12]
+    ldr     r5, [sp, #16]
+    swi     __NR_syscall
+    ldmfd   sp!, {r4, r5, lr}
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno
+
+#endif

libc/arch-arm/bionic/tkill.S

@@ -25,11 +25,6 @@
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
-
-#include <linux/err.h>
-#include <asm/unistd.h>
-#include <machine/asm.h>
-
 /* unlike our auto-generated syscall stubs, this code saves lr
    on the stack, as well as a few other registers. this makes
    our stack unwinder happy, when we generate debug stack
@@ -37,14 +32,22 @@
    abort due to a fatal runtime error (e.g. detection
    of a corrupted malloc heap).
 */
+#include <sys/linux-syscalls.h>
 
-ENTRY(tkill)
+#ifndef __NR_tkill
+#define __NR_tkill  238
+#endif
+
+    .text
+    .type tkill, #function
+    .globl tkill
+    .align 4
+
+tkill:
     stmfd   sp!, {r4-r7, ip, lr}
     ldr     r7, =__NR_tkill
     swi     #0
     ldmfd   sp!, {r4-r7, ip, lr}
-    cmn     r0, #(MAX_ERRNO + 1)
-    bxls    lr
-    neg     r0, r0
-    b       __set_errno
-END(tkill)
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno

libc/arch-arm/cortex-a15/bionic/__strcat_chk.S

@@ -1,227 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <machine/asm.h>
-#include "libc_events.h"
-
-    .syntax unified
-
-    .thumb
-    .thumb_func
-
-// Get the length of src string, then get the source of the dst string.
-// Check that the two lengths together don't exceed the threshold, then
-// do a memcpy of the data.
-ENTRY(__strcat_chk)
-    .cfi_startproc
-    pld     [r0, #0]
-    push    {r0, lr}
-    .save   {r0, lr}
-    .cfi_def_cfa_offset 8
-    .cfi_rel_offset r0, 0
-    .cfi_rel_offset lr, 4
-    push    {r4, r5}
-    .save   {r4, r5}
-    .cfi_adjust_cfa_offset 8
-    .cfi_rel_offset r4, 0
-    .cfi_rel_offset r5, 4
-
-    mov     lr, r2
-
-    // Save the dst register to r5
-    mov     r5, r0
-
-    // Zero out r4
-    eor     r4, r4, r4
-
-    // r1 contains the address of the string to count.
-.L_strlen_start:
-    mov     r0, r1
-    ands    r3, r1, #7
-    beq     .L_mainloop
-
-    // Align to a double word (64 bits).
-    rsb     r3, r3, #8
-    lsls    ip, r3, #31
-    beq     .L_align_to_32
-
-    ldrb    r2, [r1], #1
-    cbz     r2, .L_update_count_and_finish
-
-.L_align_to_32:
-    bcc     .L_align_to_64
-    ands    ip, r3, #2
-    beq     .L_align_to_64
-
-    ldrb    r2, [r1], #1
-    cbz     r2, .L_update_count_and_finish
-    ldrb    r2, [r1], #1
-    cbz     r2, .L_update_count_and_finish
-
-.L_align_to_64:
-    tst     r3, #4
-    beq     .L_mainloop
-    ldr     r3, [r1], #4
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     .L_zero_in_second_register
-
-    .p2align 2
-.L_mainloop:
-    ldrd    r2, r3, [r1], #8
-
-    pld     [r1, #64]
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     .L_zero_in_first_register
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     .L_zero_in_second_register
-    b       .L_mainloop
-
-.L_update_count_and_finish:
-    sub     r3, r1, r0
-    sub     r3, r3, #1
-    b       .L_finish
-
-.L_zero_in_first_register:
-    sub     r3, r1, r0
-    lsls    r2, ip, #17
-    bne     .L_sub8_and_finish
-    bcs     .L_sub7_and_finish
-    lsls    ip, ip, #1
-    bne     .L_sub6_and_finish
-
-    sub     r3, r3, #5
-    b       .L_finish
-
-.L_sub8_and_finish:
-    sub     r3, r3, #8
-    b       .L_finish
-
-.L_sub7_and_finish:
-    sub     r3, r3, #7
-    b       .L_finish
-
-.L_sub6_and_finish:
-    sub     r3, r3, #6
-    b       .L_finish
-
-.L_zero_in_second_register:
-    sub     r3, r1, r0
-    lsls    r2, ip, #17
-    bne     .L_sub4_and_finish
-    bcs     .L_sub3_and_finish
-    lsls    ip, ip, #1
-    bne     .L_sub2_and_finish
-
-    sub     r3, r3, #1
-    b       .L_finish
-
-.L_sub4_and_finish:
-    sub     r3, r3, #4
-    b       .L_finish
-
-.L_sub3_and_finish:
-    sub     r3, r3, #3
-    b       .L_finish
-
-.L_sub2_and_finish:
-    sub     r3, r3, #2
-
-.L_finish:
-    cmp     r4, #0
-    bne     .L_strlen_done
-
-    // Time to get the dst string length.
-    mov     r1, r5
-
-    // Save the original source address to r5.
-    mov     r5, r0
-
-    // Save the current length (adding 1 for the terminator).
-    add     r4, r3, #1
-    b       .L_strlen_start
-
-    // r0 holds the pointer to the dst string.
-    // r3 holds the dst string length.
-    // r4 holds the src string length + 1.
-.L_strlen_done:
-    add     r2, r3, r4
-    cmp     r2, lr
-    bhi     __strcat_chk_failed
-
-    // Set up the registers for the memcpy code.
-    mov     r1, r5
-    pld     [r1, #64]
-    mov     r2, r4
-    add     r0, r0, r3
-    pop     {r4, r5}
-
-    .cfi_endproc
-END(__strcat_chk)
-
-#define MEMCPY_BASE         __strcat_chk_memcpy_base
-#define MEMCPY_BASE_ALIGNED __strcat_chk_memcpy_base_aligned
-
-#include "memcpy_base.S"
-
-ENTRY(__strcat_chk_failed)
-    .cfi_startproc
-    .save   {r0, lr}
-    .save   {r4, r5}
-
-    .cfi_def_cfa_offset 8
-    .cfi_rel_offset r0, 0
-    .cfi_rel_offset lr, 4
-    .cfi_adjust_cfa_offset 8
-    .cfi_rel_offset r4, 0
-    .cfi_rel_offset r5, 4
-
-    ldr     r0, error_message
-    ldr     r1, error_code
-1:
-    add     r0, pc
-    bl      __fortify_chk_fail
-error_code:
-    .word   BIONIC_EVENT_STRCAT_BUFFER_OVERFLOW
-error_message:
-    .word   error_string-(1b+4)
-
-    .cfi_endproc
-END(__strcat_chk_failed)
-
-    .data
-error_string:
-    .string "strcat buffer overflow"

libc/arch-arm/cortex-a15/bionic/__strcpy_chk.S

@@ -1,188 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <machine/asm.h>
-#include "libc_events.h"
-
-    .syntax unified
-
-    .thumb
-    .thumb_func
-
-// Get the length of the source string first, then do a memcpy of the data
-// instead of a strcpy.
-ENTRY(__strcpy_chk)
-    .cfi_startproc
-    pld     [r0, #0]
-    push    {r0, lr}
-    .save   {r0, lr}
-    .cfi_def_cfa_offset 8
-    .cfi_rel_offset r0, 0
-    .cfi_rel_offset lr, 4
-
-    mov     lr, r2
-    mov     r0, r1
-
-    ands    r3, r1, #7
-    beq     .L_mainloop
-
-    // Align to a double word (64 bits).
-    rsb     r3, r3, #8
-    lsls    ip, r3, #31
-    beq     .L_align_to_32
-
-    ldrb    r2, [r0], #1
-    cbz     r2, .L_update_count_and_finish
-
-.L_align_to_32:
-    bcc     .L_align_to_64
-    ands    ip, r3, #2
-    beq     .L_align_to_64
-
-    ldrb    r2, [r0], #1
-    cbz     r2, .L_update_count_and_finish
-    ldrb    r2, [r0], #1
-    cbz     r2, .L_update_count_and_finish
-
-.L_align_to_64:
-    tst     r3, #4
-    beq     .L_mainloop
-    ldr     r3, [r0], #4
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     .L_zero_in_second_register
-
-    .p2align 2
-.L_mainloop:
-    ldrd    r2, r3, [r0], #8
-
-    pld     [r0, #64]
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     .L_zero_in_first_register
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     .L_zero_in_second_register
-    b       .L_mainloop
-
-.L_update_count_and_finish:
-    sub     r3, r0, r1
-    sub     r3, r3, #1
-    b       .L_check_size
-
-.L_zero_in_first_register:
-    sub     r3, r0, r1
-    lsls    r2, ip, #17
-    bne     .L_sub8_and_finish
-    bcs     .L_sub7_and_finish
-    lsls    ip, ip, #1
-    bne     .L_sub6_and_finish
-
-    sub     r3, r3, #5
-    b       .L_check_size
-
-.L_sub8_and_finish:
-    sub     r3, r3, #8
-    b       .L_check_size
-
-.L_sub7_and_finish:
-    sub     r3, r3, #7
-    b       .L_check_size
-
-.L_sub6_and_finish:
-    sub     r3, r3, #6
-    b       .L_check_size
-
-.L_zero_in_second_register:
-    sub     r3, r0, r1
-    lsls    r2, ip, #17
-    bne     .L_sub4_and_finish
-    bcs     .L_sub3_and_finish
-    lsls    ip, ip, #1
-    bne     .L_sub2_and_finish
-
-    sub     r3, r3, #1
-    b       .L_check_size
-
-.L_sub4_and_finish:
-    sub     r3, r3, #4
-    b       .L_check_size
-
-.L_sub3_and_finish:
-    sub     r3, r3, #3
-    b       .L_check_size
-
-.L_sub2_and_finish:
-    sub     r3, r3, #2
-
-.L_check_size:
-    pld     [r1, #0]
-    pld     [r1, #64]
-    ldr     r0, [sp]
-    cmp     r3, lr
-    bhs     __strcpy_chk_failed
-
-    // Add 1 for copy length to get the string terminator.
-    add     r2, r3, #1
-
-    .cfi_endproc
-END(__strcpy_chk)
-
-#define MEMCPY_BASE         __strcpy_chk_memcpy_base
-#define MEMCPY_BASE_ALIGNED __strcpy_chk_memcpy_base_aligned
-#include "memcpy_base.S"
-
-ENTRY(__strcpy_chk_failed)
-    .cfi_startproc
-    .save   {r0, lr}
-    .cfi_def_cfa_offset 8
-    .cfi_rel_offset r0, 0
-    .cfi_rel_offset lr, 4
-
-    ldr     r0, error_message
-    ldr     r1, error_code
-1:
-    add     r0, pc
-    bl      __fortify_chk_fail
-error_code:
-    .word   BIONIC_EVENT_STRCPY_BUFFER_OVERFLOW
-error_message:
-    .word   error_string-(1b+4)
-
-    .cfi_endproc
-END(__strcpy_chk_failed)
-
-    .data
-error_string:
-    .string "strcpy buffer overflow"

libc/arch-arm/cortex-a15/bionic/memcpy.S

@@ -1,112 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-/*
- * Copyright (c) 2013 ARM Ltd
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the company may not be used to endorse or promote
- *    products derived from this software without specific prior written
- *    permission.
- *
- * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-// Prototype: void *memcpy (void *dst, const void *src, size_t count).
-
-#include <machine/asm.h>
-#include "libc_events.h"
-
-        .text
-        .syntax unified
-        .fpu    neon
-
-ENTRY(__memcpy_chk)
-        .cfi_startproc
-        cmp     r2, r3
-        bhi     __memcpy_chk_fail
-
-        // Fall through to memcpy...
-        .cfi_endproc
-END(__memcpy_chk)
-
-ENTRY(memcpy)
-        .cfi_startproc
-        pld     [r1, #64]
-        push    {r0, lr}
-        .save   {r0, lr}
-        .cfi_def_cfa_offset 8
-        .cfi_rel_offset r0, 0
-        .cfi_rel_offset lr, 4
-
-        .cfi_endproc
-END(memcpy)
-
-#define MEMCPY_BASE         __memcpy_base
-#define MEMCPY_BASE_ALIGNED __memcpy_base_aligned
-#include "memcpy_base.S"
-
-ENTRY(__memcpy_chk_fail)
-        .cfi_startproc
-        // Preserve lr for backtrace.
-        push    {lr}
-        .save   {lr}
-        .cfi_def_cfa_offset 4
-        .cfi_rel_offset lr, 0
-
-        ldr     r0, error_message
-        ldr     r1, error_code
-1:
-        add     r0, pc
-        bl      __fortify_chk_fail
-error_code:
-        .word   BIONIC_EVENT_MEMCPY_BUFFER_OVERFLOW
-error_message:
-        .word   error_string-(1b+8)
-        .cfi_endproc
-END(__memcpy_chk_fail)
-
-        .data
-error_string:
-        .string "memcpy buffer overflow"

libc/arch-arm/cortex-a15/bionic/memcpy_base.S

@@ -1,329 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-/*
- * Copyright (c) 2013 ARM Ltd
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the company may not be used to endorse or promote
- *    products derived from this software without specific prior written
- *    permission.
- *
- * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-ENTRY(MEMCPY_BASE)
-        .cfi_startproc
-        .save   {r0, lr}
-        .cfi_def_cfa_offset 8
-        .cfi_rel_offset r0, 0
-        .cfi_rel_offset lr, 4
-
-        // Assumes that n >= 0, and dst, src are valid pointers.
-        // For any sizes less than 832 use the neon code that doesn't
-        // care about the src alignment. This avoids any checks
-        // for src alignment, and offers the best improvement since
-        // smaller sized copies are dominated by the overhead of
-        // the pre and post main loop.
-        // For larger copies, if src and dst cannot both be aligned to
-        // word boundaries, use the neon code.
-        // For all other copies, align dst to a double word boundary
-        // and copy using LDRD/STRD instructions.
-
-        cmp     r2, #16
-        blo     .L_copy_less_than_16_unknown_align
-
-        // TODO: The aligned copy code is extremely slow copying some large
-        //       buffers so always go through the unaligned path for now.
-        //cmp     r2, #832
-        //bge     .L_check_alignment
-
-.L_copy_unknown_alignment:
-        // Unknown alignment of src and dst.
-        // Assumes that the first few bytes have already been prefetched.
-
-        // Align destination to 128 bits. The mainloop store instructions
-        // require this alignment or they will throw an exception.
-        rsb         r3, r0, #0
-        ands        r3, r3, #0xF
-        beq         2f
-
-        // Copy up to 15 bytes (count in r3).
-        sub         r2, r2, r3
-        movs        ip, r3, lsl #31
-
-        itt         mi
-        ldrbmi      lr, [r1], #1
-        strbmi      lr, [r0], #1
-        itttt       cs
-        ldrbcs      ip, [r1], #1
-        ldrbcs      lr, [r1], #1
-        strbcs      ip, [r0], #1
-        strbcs      lr, [r0], #1
-
-        movs        ip, r3, lsl #29
-        bge         1f
-        // Copies 4 bytes, dst 32 bits aligned before, at least 64 bits after.
-        vld4.8      {d0[0], d1[0], d2[0], d3[0]}, [r1]!
-        vst4.8      {d0[0], d1[0], d2[0], d3[0]}, [r0, :32]!
-1:      bcc         2f
-        // Copies 8 bytes, dst 64 bits aligned before, at least 128 bits after.
-        vld1.8      {d0}, [r1]!
-        vst1.8      {d0}, [r0, :64]!
-
-2:      // Make sure we have at least 64 bytes to copy.
-        subs        r2, r2, #64
-        blo         2f
-
-1:      // The main loop copies 64 bytes at a time.
-        vld1.8      {d0  - d3},   [r1]!
-        vld1.8      {d4  - d7},   [r1]!
-        pld         [r1, #(64*4)]
-        subs        r2, r2, #64
-        vst1.8      {d0  - d3},   [r0, :128]!
-        vst1.8      {d4  - d7},   [r0, :128]!
-        bhs         1b
-
-2:      // Fix-up the remaining count and make sure we have >= 32 bytes left.
-        adds        r2, r2, #32
-        blo         3f
-
-        // 32 bytes. These cache lines were already preloaded.
-        vld1.8      {d0 - d3},  [r1]!
-        sub         r2, r2, #32
-        vst1.8      {d0 - d3},  [r0, :128]!
-3:      // Less than 32 left.
-        add         r2, r2, #32
-        tst         r2, #0x10
-        beq         .L_copy_less_than_16_unknown_align
-        // Copies 16 bytes, destination 128 bits aligned.
-        vld1.8      {d0, d1}, [r1]!
-        vst1.8      {d0, d1}, [r0, :128]!
-
-.L_copy_less_than_16_unknown_align:
-        // Copy up to 15 bytes (count in r2).
-        movs        ip, r2, lsl #29
-        bcc         1f
-        vld1.8      {d0}, [r1]!
-        vst1.8      {d0}, [r0]!
-1:      bge         2f
-        vld4.8      {d0[0], d1[0], d2[0], d3[0]}, [r1]!
-        vst4.8      {d0[0], d1[0], d2[0], d3[0]}, [r0]!
-
-2:      // Copy 0 to 4 bytes.
-        lsls        r2, r2, #31
-        itt         ne
-        ldrbne      lr, [r1], #1
-        strbne      lr, [r0], #1
-        itttt       cs
-        ldrbcs      ip, [r1], #1
-        ldrbcs      lr, [r1]
-        strbcs      ip, [r0], #1
-        strbcs      lr, [r0]
-
-        pop         {r0, pc}
-
-.L_check_alignment:
-        // If src and dst cannot both be aligned to a word boundary,
-        // use the unaligned copy version.
-        eor     r3, r0, r1
-        ands    r3, r3, #0x3
-        bne     .L_copy_unknown_alignment
-
-        .cfi_endproc
-END(MEMCPY_BASE)
-
-ENTRY(MEMCPY_BASE_ALIGNED)
-        .cfi_startproc
-        .save   {r0, lr}
-        .cfi_def_cfa_offset 8
-        .cfi_rel_offset r0, 0
-        .cfi_rel_offset lr, 4
-
-        // To try and improve performance, stack layout changed,
-        // i.e., not keeping the stack looking like users expect
-        // (highest numbered register at highest address).
-        strd    r4, r5, [sp, #-8]!
-        .save   {r4, r5}
-        .cfi_adjust_cfa_offset 8
-        .cfi_rel_offset r4, 0
-        .cfi_rel_offset r5, 4
-        strd    r6, r7, [sp, #-8]!
-        .save   {r6, r7}
-        .cfi_adjust_cfa_offset 8
-        .cfi_rel_offset r6, 0
-        .cfi_rel_offset r7, 0
-        strd    r8, r9, [sp, #-8]!
-        .save   {r8, r9}
-        .cfi_adjust_cfa_offset 8
-        .cfi_rel_offset r8, 0
-        .cfi_rel_offset r9, 4
-
-        // Optimized for already aligned dst code.
-        ands    ip, r0, #3
-        bne     .L_dst_not_word_aligned
-
-.L_word_aligned:
-        // Align the destination buffer to 8 bytes, to make sure double
-        // loads and stores don't cross a cache line boundary,
-        // as they are then more expensive even if the data is in the cache
-        // (require two load/store issue cycles instead of one).
-        // If only one of the buffers is not 8 bytes aligned,
-        // then it's more important to align dst than src,
-        // because there is more penalty for stores
-        // than loads that cross a cacheline boundary.
-        // This check and realignment are only done if there is >= 832
-        // bytes to copy.
-
-        // Dst is word aligned, but check if it is already double word aligned.
-        ands    r3, r0, #4
-        beq     1f
-        ldr     r3, [r1], #4
-        str     r3, [r0], #4
-        sub     r2, #4
-
-1:      // Can only get here if > 64 bytes to copy, so don't do check r2.
-        sub     r2, #64
-
-2:      // Every loop iteration copies 64 bytes.
-        .irp    offset, #0, #8, #16, #24, #32
-        ldrd    r4, r5, [r1, \offset]
-        strd    r4, r5, [r0, \offset]
-        .endr
-
-        ldrd    r4, r5, [r1, #40]
-        ldrd    r6, r7, [r1, #48]
-        ldrd    r8, r9, [r1, #56]
-
-        // Keep the pld as far from the next load as possible.
-        // The amount to prefetch was determined experimentally using
-        // large sizes, and verifying the prefetch size does not affect
-        // the smaller copies too much.
-        // WARNING: If the ldrd and strd instructions get too far away
-        //          from each other, performance suffers. Three loads
-        //          in a row is the best tradeoff.
-        pld     [r1, #(64*16)]
-        strd    r4, r5, [r0, #40]
-        strd    r6, r7, [r0, #48]
-        strd    r8, r9, [r0, #56]
-
-        add     r0, r0, #64
-        add     r1, r1, #64
-        subs    r2, r2, #64
-        bge     2b
-
-        // Fix-up the remaining count and make sure we have >= 32 bytes left.
-        adds    r2, r2, #32
-        blo     4f
-
-        // Copy 32 bytes. These cache lines were already preloaded.
-        .irp    offset, #0, #8, #16, #24
-        ldrd    r4, r5, [r1, \offset]
-        strd    r4, r5, [r0, \offset]
-        .endr
-        add     r1, r1, #32
-        add     r0, r0, #32
-        sub     r2, r2, #32
-4:      // Less than 32 left.
-        add     r2, r2, #32
-        tst     r2, #0x10
-        beq     5f
-        // Copy 16 bytes.
-        .irp    offset, #0, #8
-        ldrd    r4, r5, [r1, \offset]
-        strd    r4, r5, [r0, \offset]
-        .endr
-        add     r1, r1, #16
-        add     r0, r0, #16
-
-5:      // Copy up to 15 bytes (count in r2).
-        movs    ip, r2, lsl #29
-        bcc     1f
-        // Copy 8 bytes.
-        ldrd    r4, r5, [r1], #8
-        strd    r4, r5, [r0], #8
-1:      bge         2f
-        // Copy 4 bytes.
-        ldr     r4, [r1], #4
-        str     r4, [r0], #4
-2:      // Copy 0 to 4 bytes.
-        lsls    r2, r2, #31
-        itt     ne
-        ldrbne  lr, [r1], #1
-        strbne  lr, [r0], #1
-        itttt   cs
-        ldrbcs  ip, [r1], #1
-        ldrbcs  lr, [r1]
-        strbcs  ip, [r0], #1
-        strbcs  lr, [r0]
-
-        // Restore registers: optimized pop {r0, pc}
-        ldrd    r8, r9, [sp], #8
-        ldrd    r6, r7, [sp], #8
-        ldrd    r4, r5, [sp], #8
-        pop     {r0, pc}
-
-.L_dst_not_word_aligned:
-        // Align dst to word.
-        rsb     ip, ip, #4
-        cmp     ip, #2
-
-        itt     gt
-        ldrbgt  lr, [r1], #1
-        strbgt  lr, [r0], #1
-
-        itt     ge
-        ldrbge  lr, [r1], #1
-        strbge  lr, [r0], #1
-
-        ldrb    lr, [r1], #1
-        strb    lr, [r0], #1
-
-        sub     r2, r2, ip
-
-        // Src is guaranteed to be at least word aligned by this point.
-        b       .L_word_aligned
-
-        .cfi_endproc
-END(MEMCPY_BASE_ALIGNED)

libc/arch-arm/cortex-a15/bionic/memset.S

@@ -1,200 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <machine/cpu-features.h>
-#include <machine/asm.h>
-#include "libc_events.h"
-
-        /*
-         * Optimized memset() for ARM.
-         *
-         * memset() returns its first argument.
-         */
-
-        .fpu        neon
-        .syntax     unified
-
-ENTRY(__memset_chk)
-        .cfi_startproc
-        cmp         r2, r3
-        bls         .L_done
-
-        // Preserve lr for backtrace.
-        .save       {lr}
-        push        {lr}
-        .cfi_def_cfa_offset 4
-        .cfi_rel_offset lr, 0
-
-        ldr         r0, error_message
-        ldr         r1, error_code
-1:
-        add         r0, pc
-        bl          __fortify_chk_fail
-error_code:
-        .word       BIONIC_EVENT_MEMSET_BUFFER_OVERFLOW
-error_message:
-        .word       error_string-(1b+8)
-
-        .cfi_endproc
-END(__memset_chk)
-
-ENTRY(bzero)
-        .cfi_startproc
-        mov         r2, r1
-        mov         r1, #0
-.L_done:
-        // Fall through to memset...
-        .cfi_endproc
-END(bzero)
-
-ENTRY(memset)
-        .cfi_startproc
-        .save       {r0}
-        stmfd       sp!, {r0}
-        .cfi_def_cfa_offset 4
-        .cfi_rel_offset r0, 0
-
-        // The new algorithm is slower for copies < 16 so use the old
-        // neon code in that case.
-        cmp         r2, #16
-        blo         .L_set_less_than_16_unknown_align
-
-        // Use strd which requires an even and odd register so move the
-        // values so that:
-        //   r0 and r1 contain the memset value
-        //   r2 is the number of bytes to set
-        //   r3 is the destination pointer
-        mov         r3, r0
-
-        // Copy the byte value in every byte of r1.
-        mov         r1, r1, lsl #24
-        orr         r1, r1, r1, lsr #8
-        orr         r1, r1, r1, lsr #16
-
-.L_check_alignment:
-        // Align destination to a double word to avoid the strd crossing
-        // a cache line boundary.
-        ands        ip, r3, #7
-        bne         .L_do_double_word_align
-
-.L_double_word_aligned:
-        mov         r0, r1
-
-        subs        r2, #64
-        blo         .L_set_less_than_64
-
-1:      // Main loop sets 64 bytes at a time.
-        .irp        offset, #0, #8, #16, #24, #32, #40, #48, #56
-        strd        r0, r1, [r3, \offset]
-        .endr
-
-        add         r3, #64
-        subs        r2, #64
-        bge         1b
-
-.L_set_less_than_64:
-        // Restore r2 to the count of bytes left to set.
-        add         r2, #64
-        lsls        ip, r2, #27
-        bcc         .L_set_less_than_32
-        // Set 32 bytes.
-        .irp        offset, #0, #8, #16, #24
-        strd        r0, r1, [r3, \offset]
-        .endr
-        add         r3, #32
-
-.L_set_less_than_32:
-        bpl         .L_set_less_than_16
-        // Set 16 bytes.
-        .irp        offset, #0, #8
-        strd        r0, r1, [r3, \offset]
-        .endr
-        add         r3, #16
-
-.L_set_less_than_16:
-        // Less than 16 bytes to set.
-        lsls        ip, r2, #29
-        bcc         .L_set_less_than_8
-
-        // Set 8 bytes.
-        strd        r0, r1, [r3], #8
-
-.L_set_less_than_8:
-        bpl         .L_set_less_than_4
-        // Set 4 bytes
-        str         r1, [r3], #4
-
-.L_set_less_than_4:
-        lsls        ip, r2, #31
-        it          ne
-        strbne      r1, [r3], #1
-        itt         cs
-        strbcs      r1, [r3], #1
-        strbcs      r1, [r3]
-
-        ldmfd       sp!, {r0}
-        bx          lr
-
-.L_do_double_word_align:
-        rsb         ip, ip, #8
-        sub         r2, r2, ip
-        movs        r0, ip, lsl #31
-        it          mi
-        strbmi      r1, [r3], #1
-        itt         cs
-        strbcs      r1, [r3], #1
-        strbcs      r1, [r3], #1
-
-        // Dst is at least word aligned by this point.
-        cmp         ip, #4
-        blo         .L_double_word_aligned
-        str         r1, [r3], #4
-        b           .L_double_word_aligned
-
-.L_set_less_than_16_unknown_align:
-        // Set up to 15 bytes.
-        vdup.8      d0, r1
-        movs        ip, r2, lsl #29
-        bcc         1f
-        vst1.8      {d0}, [r0]!
-1:      bge         2f
-        vst1.32     {d0[0]}, [r0]!
-2:      movs        ip, r2, lsl #31
-        it          mi
-        strbmi      r1, [r0], #1
-        itt         cs
-        strbcs      r1, [r0], #1
-        strbcs      r1, [r0], #1
-        ldmfd       sp!, {r0}
-        bx          lr
-        .cfi_endproc
-END(memset)
-
-        .data
-error_string:
-        .string     "memset buffer overflow"

libc/arch-arm/cortex-a15/bionic/strcat.S

@@ -1,568 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-/*
- * Copyright (c) 2013 ARM Ltd
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the company may not be used to endorse or promote
- *    products derived from this software without specific prior written
- *    permission.
- *
- * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <machine/asm.h>
-
-    .syntax unified
-
-    .thumb
-    .thumb_func
-
-    .macro m_push
-    push    {r0, r4, r5, lr}
-    .endm // m_push
-
-    .macro m_pop
-    pop     {r0, r4, r5, pc}
-    .endm // m_pop
-
-    .macro m_scan_byte
-    ldrb    r3, [r0]
-    cbz     r3, strcat_r0_scan_done
-    add     r0, #1
-    .endm // m_scan_byte
-
-    .macro m_copy_byte reg, cmd, label
-    ldrb    \reg, [r1], #1
-    strb    \reg, [r0], #1
-    \cmd    \reg, \label
-    .endm // m_copy_byte
-
-ENTRY(strcat)
-    // Quick check to see if src is empty.
-    ldrb    r2, [r1]
-    pld     [r1, #0]
-    cbnz    r2, strcat_continue
-    bx      lr
-
-strcat_continue:
-    // To speed up really small dst strings, unroll checking the first 4 bytes.
-    m_push
-    m_scan_byte
-    m_scan_byte
-    m_scan_byte
-    m_scan_byte
-
-    ands    r3, r0, #7
-    beq     strcat_mainloop
-
-    // Align to a double word (64 bits).
-    rsb     r3, r3, #8
-    lsls    ip, r3, #31
-    beq     strcat_align_to_32
-
-    ldrb    r5, [r0]
-    cbz     r5, strcat_r0_scan_done
-    add     r0, r0, #1
-
-strcat_align_to_32:
-    bcc     strcat_align_to_64
-
-    ldrb    r2, [r0]
-    cbz     r2, strcat_r0_scan_done
-    add     r0, r0, #1
-    ldrb    r4, [r0]
-    cbz     r4, strcat_r0_scan_done
-    add     r0, r0, #1
-
-strcat_align_to_64:
-    tst     r3, #4
-    beq     strcat_mainloop
-    ldr     r3, [r0], #4
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcat_zero_in_second_register
-    b       strcat_mainloop
-
-strcat_r0_scan_done:
-    // For short copies, hard-code checking the first 8 bytes since this
-    // new code doesn't win until after about 8 bytes.
-    m_copy_byte reg=r2, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r3, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r4, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r5, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r2, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r3, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r4, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r5, cmd=cbnz, label=strcpy_continue
-
-strcpy_finish:
-    m_pop
-
-strcpy_continue:
-    ands    r3, r0, #7
-    beq     strcpy_check_src_align
-
-    // Align to a double word (64 bits).
-    rsb     r3, r3, #8
-    lsls    ip, r3, #31
-    beq     strcpy_align_to_32
-
-    ldrb    r2, [r1], #1
-    strb    r2, [r0], #1
-    cbz     r2, strcpy_complete
-
-strcpy_align_to_32:
-    bcc     strcpy_align_to_64
-
-    ldrb    r2, [r1], #1
-    strb    r2, [r0], #1
-    cbz     r2, strcpy_complete
-    ldrb    r2, [r1], #1
-    strb    r2, [r0], #1
-    cbz     r2, strcpy_complete
-
-strcpy_align_to_64:
-    tst     r3, #4
-    beq     strcpy_check_src_align
-    ldr     r2, [r1], #4
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-    str     r2, [r0], #4
-
-strcpy_check_src_align:
-    // At this point dst is aligned to a double word, check if src
-    // is also aligned to a double word.
-    ands    r3, r1, #7
-    bne     strcpy_unaligned_copy
-
-    .p2align 2
-strcpy_mainloop:
-    ldrd    r2, r3, [r1], #8
-
-    pld     [r1, #64]
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
-
-    strd    r2, r3, [r0], #8
-    b       strcpy_mainloop
-
-strcpy_complete:
-    m_pop
-
-strcpy_zero_in_first_register:
-    lsls    lr, ip, #17
-    bne     strcpy_copy1byte
-    bcs     strcpy_copy2bytes
-    lsls    ip, ip, #1
-    bne     strcpy_copy3bytes
-
-strcpy_copy4bytes:
-    // Copy 4 bytes to the destiniation.
-    str     r2, [r0]
-    m_pop
-
-strcpy_copy1byte:
-    strb    r2, [r0]
-    m_pop
-
-strcpy_copy2bytes:
-    strh    r2, [r0]
-    m_pop
-
-strcpy_copy3bytes:
-    strh    r2, [r0], #2
-    lsr     r2, #16
-    strb    r2, [r0]
-    m_pop
-
-strcpy_zero_in_second_register:
-    lsls    lr, ip, #17
-    bne     strcpy_copy5bytes
-    bcs     strcpy_copy6bytes
-    lsls    ip, ip, #1
-    bne     strcpy_copy7bytes
-
-    // Copy 8 bytes to the destination.
-    strd    r2, r3, [r0]
-    m_pop
-
-strcpy_copy5bytes:
-    str     r2, [r0], #4
-    strb    r3, [r0]
-    m_pop
-
-strcpy_copy6bytes:
-    str     r2, [r0], #4
-    strh    r3, [r0]
-    m_pop
-
-strcpy_copy7bytes:
-    str     r2, [r0], #4
-    strh    r3, [r0], #2
-    lsr     r3, #16
-    strb    r3, [r0]
-    m_pop
-
-strcpy_unaligned_copy:
-    // Dst is aligned to a double word, while src is at an unknown alignment.
-    // There are 7 different versions of the unaligned copy code
-    // to prevent overreading the src. The mainloop of every single version
-    // will store 64 bits per loop. The difference is how much of src can
-    // be read without potentially crossing a page boundary.
-    tbb     [pc, r3]
-strcpy_unaligned_branchtable:
-    .byte 0
-    .byte ((strcpy_unalign7 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign6 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign5 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign4 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign3 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign2 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign1 - strcpy_unaligned_branchtable)/2)
-
-    .p2align 2
-    // Can read 7 bytes before possibly crossing a page.
-strcpy_unalign7:
-    ldr     r2, [r1], #4
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-
-    ldrb    r3, [r1]
-    cbz     r3, strcpy_unalign7_copy5bytes
-    ldrb    r4, [r1, #1]
-    cbz     r4, strcpy_unalign7_copy6bytes
-    ldrb    r5, [r1, #2]
-    cbz     r5, strcpy_unalign7_copy7bytes
-
-    ldr     r3, [r1], #4
-    pld     [r1, #64]
-
-    lsrs    ip, r3, #24
-    strd    r2, r3, [r0], #8
-    beq     strcpy_unalign_return
-    b       strcpy_unalign7
-
-strcpy_unalign7_copy5bytes:
-    str     r2, [r0], #4
-    strb    r3, [r0]
-strcpy_unalign_return:
-    m_pop
-
-strcpy_unalign7_copy6bytes:
-    str     r2, [r0], #4
-    strb    r3, [r0], #1
-    strb    r4, [r0], #1
-    m_pop
-
-strcpy_unalign7_copy7bytes:
-    str     r2, [r0], #4
-    strb    r3, [r0], #1
-    strb    r4, [r0], #1
-    strb    r5, [r0], #1
-    m_pop
-
-    .p2align 2
-    // Can read 6 bytes before possibly crossing a page.
-strcpy_unalign6:
-    ldr     r2, [r1], #4
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-
-    ldrb    r4, [r1]
-    cbz     r4, strcpy_unalign_copy5bytes
-    ldrb    r5, [r1, #1]
-    cbz     r5, strcpy_unalign_copy6bytes
-
-    ldr     r3, [r1], #4
-    pld     [r1, #64]
-
-    tst     r3, #0xff0000
-    beq     strcpy_copy7bytes
-    lsrs    ip, r3, #24
-    strd    r2, r3, [r0], #8
-    beq     strcpy_unalign_return
-    b       strcpy_unalign6
-
-    .p2align 2
-    // Can read 5 bytes before possibly crossing a page.
-strcpy_unalign5:
-    ldr     r2, [r1], #4
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-
-    ldrb    r4, [r1]
-    cbz     r4, strcpy_unalign_copy5bytes
-
-    ldr     r3, [r1], #4
-
-    pld     [r1, #64]
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
-
-    strd    r2, r3, [r0], #8
-    b       strcpy_unalign5
-
-strcpy_unalign_copy5bytes:
-    str     r2, [r0], #4
-    strb    r4, [r0]
-    m_pop
-
-strcpy_unalign_copy6bytes:
-    str     r2, [r0], #4
-    strb    r4, [r0], #1
-    strb    r5, [r0]
-    m_pop
-
-    .p2align 2
-    // Can read 4 bytes before possibly crossing a page.
-strcpy_unalign4:
-    ldr     r2, [r1], #4
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-
-    ldr     r3, [r1], #4
-    pld     [r1, #64]
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
-
-    strd    r2, r3, [r0], #8
-    b       strcpy_unalign4
-
-    .p2align 2
-    // Can read 3 bytes before possibly crossing a page.
-strcpy_unalign3:
-    ldrb    r2, [r1]
-    cbz     r2, strcpy_unalign3_copy1byte
-    ldrb    r3, [r1, #1]
-    cbz     r3, strcpy_unalign3_copy2bytes
-    ldrb    r4, [r1, #2]
-    cbz     r4, strcpy_unalign3_copy3bytes
-
-    ldr     r2, [r1], #4
-    ldr     r3, [r1], #4
-
-    pld     [r1, #64]
-
-    lsrs    lr, r2, #24
-    beq     strcpy_copy4bytes
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
-
-    strd    r2, r3, [r0], #8
-    b       strcpy_unalign3
-
-strcpy_unalign3_copy1byte:
-    strb    r2, [r0]
-    m_pop
-
-strcpy_unalign3_copy2bytes:
-    strb    r2, [r0], #1
-    strb    r3, [r0]
-    m_pop
-
-strcpy_unalign3_copy3bytes:
-    strb    r2, [r0], #1
-    strb    r3, [r0], #1
-    strb    r4, [r0]
-    m_pop
-
-    .p2align 2
-    // Can read 2 bytes before possibly crossing a page.
-strcpy_unalign2:
-    ldrb    r2, [r1]
-    cbz     r2, strcpy_unalign_copy1byte
-    ldrb    r4, [r1, #1]
-    cbz     r4, strcpy_unalign_copy2bytes
-
-    ldr     r2, [r1], #4
-    ldr     r3, [r1], #4
-    pld     [r1, #64]
-
-    tst     r2, #0xff0000
-    beq     strcpy_copy3bytes
-    lsrs    ip, r2, #24
-    beq     strcpy_copy4bytes
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
-
-    strd    r2, r3, [r0], #8
-    b       strcpy_unalign2
-
-    .p2align 2
-    // Can read 1 byte before possibly crossing a page.
-strcpy_unalign1:
-    ldrb    r2, [r1]
-    cbz     r2, strcpy_unalign_copy1byte
-
-    ldr     r2, [r1], #4
-    ldr     r3, [r1], #4
-
-    pld     [r1, #64]
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
-
-    strd    r2, r3, [r0], #8
-    b       strcpy_unalign1
-
-strcpy_unalign_copy1byte:
-    strb    r2, [r0]
-    m_pop
-
-strcpy_unalign_copy2bytes:
-    strb    r2, [r0], #1
-    strb    r4, [r0]
-    m_pop
-
-    .p2align 2
-strcat_mainloop:
-    ldrd    r2, r3, [r0], #8
-
-    pld     [r0, #64]
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcat_zero_in_first_register
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcat_zero_in_second_register
-    b       strcat_mainloop
-
-strcat_zero_in_first_register:
-    // Prefetch the src now, it's going to be used soon.
-    pld     [r1, #0]
-    lsls    lr, ip, #17
-    bne     strcat_sub8
-    bcs     strcat_sub7
-    lsls    ip, ip, #1
-    bne     strcat_sub6
-
-    sub     r0, r0, #5
-    b       strcat_r0_scan_done
-
-strcat_sub8:
-    sub     r0, r0, #8
-    b       strcat_r0_scan_done
-
-strcat_sub7:
-    sub     r0, r0, #7
-    b       strcat_r0_scan_done
-
-strcat_sub6:
-    sub     r0, r0, #6
-    b       strcat_r0_scan_done
-
-strcat_zero_in_second_register:
-    // Prefetch the src now, it's going to be used soon.
-    pld     [r1, #0]
-    lsls    lr, ip, #17
-    bne     strcat_sub4
-    bcs     strcat_sub3
-    lsls    ip, ip, #1
-    bne     strcat_sub2
-
-    sub     r0, r0, #1
-    b       strcat_r0_scan_done
-
-strcat_sub4:
-    sub     r0, r0, #4
-    b       strcat_r0_scan_done
-
-strcat_sub3:
-    sub     r0, r0, #3
-    b       strcat_r0_scan_done
-
-strcat_sub2:
-    sub     r0, r0, #2
-    b       strcat_r0_scan_done
-END(strcat)

libc/arch-arm/cortex-a15/bionic/strcmp.S

@@ -1,390 +0,0 @@
-/*
- * Copyright (c) 2013 ARM Ltd
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the company may not be used to endorse or promote
- *    products derived from this software without specific prior written
- *    permission.
- *
- * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <machine/cpu-features.h>
-#include <machine/asm.h>
-
-#ifdef __ARMEB__
-#define S2LOMEM lsl
-#define S2LOMEMEQ lsleq
-#define S2HIMEM lsr
-#define MSB 0x000000ff
-#define LSB 0xff000000
-#define BYTE0_OFFSET 24
-#define BYTE1_OFFSET 16
-#define BYTE2_OFFSET 8
-#define BYTE3_OFFSET 0
-#else /* not  __ARMEB__ */
-#define S2LOMEM lsr
-#define S2LOMEMEQ lsreq
-#define S2HIMEM lsl
-#define BYTE0_OFFSET 0
-#define BYTE1_OFFSET 8
-#define BYTE2_OFFSET 16
-#define BYTE3_OFFSET 24
-#define MSB 0xff000000
-#define LSB 0x000000ff
-#endif /* not  __ARMEB__ */
-
-.syntax         unified
-
-#if defined (__thumb__)
-        .thumb
-        .thumb_func
-#endif
-
-ENTRY(strcmp)
-      /* Use LDRD whenever possible.  */
-
-/* The main thing to look out for when comparing large blocks is that
-   the loads do not cross a page boundary when loading past the index
-   of the byte with the first difference or the first string-terminator.
-
-   For example, if the strings are identical and the string-terminator
-   is at index k, byte by byte comparison will not load beyond address
-   s1+k and s2+k; word by word comparison may load up to 3 bytes beyond
-   k; double word - up to 7 bytes.  If the load of these bytes crosses
-   a page boundary, it might cause a memory fault (if the page is not mapped)
-   that would not have happened in byte by byte comparison.
-
-   If an address is (double) word aligned, then a load of a (double) word
-   from that address will not cross a page boundary.
-   Therefore, the algorithm below considers word and double-word alignment
-   of strings separately.  */
-
-/* High-level description of the algorithm.
-
-   * The fast path: if both strings are double-word aligned,
-     use LDRD to load two words from each string in every loop iteration.
-   * If the strings have the same offset from a word boundary,
-     use LDRB to load and compare byte by byte until
-     the first string is aligned to a word boundary (at most 3 bytes).
-     This is optimized for quick return on short unaligned strings.
-   * If the strings have the same offset from a double-word boundary,
-     use LDRD to load two words from each string in every loop iteration, as in the fast path.
-   * If the strings do not have the same offset from a double-word boundary,
-     load a word from the second string before the loop to initialize the queue.
-     Use LDRD to load two words from every string in every loop iteration.
-     Inside the loop, load the second word from the second string only after comparing
-     the first word, using the queued value, to guarantee safety across page boundaries.
-   * If the strings do not have the same offset from a word boundary,
-     use LDR and a shift queue. Order of loads and comparisons matters,
-     similarly to the previous case.
-
-   * Use UADD8 and SEL to compare words, and use REV and CLZ to compute the return value.
-   * The only difference between ARM and Thumb modes is the use of CBZ instruction.
-   * The only difference between big and little endian is the use of REV in little endian
-     to compute the return value, instead of MOV.
-*/
-
-        .macro m_cbz reg label
-#ifdef __thumb2__
-        cbz     \reg, \label
-#else   /* not defined __thumb2__ */
-        cmp     \reg, #0
-        beq     \label
-#endif /* not defined __thumb2__ */
-        .endm /* m_cbz */
-
-        .macro m_cbnz reg label
-#ifdef __thumb2__
-        cbnz    \reg, \label
-#else   /* not defined __thumb2__ */
-        cmp     \reg, #0
-        bne     \label
-#endif /* not defined __thumb2__ */
-        .endm /* m_cbnz */
-
-        .macro  init
-        /* Macro to save temporary registers and prepare magic values.  */
-        subs    sp, sp, #16
-        .cfi_def_cfa_offset 16
-        strd    r4, r5, [sp, #8]
-        .cfi_rel_offset r4, 0
-        .cfi_rel_offset r5, 4
-        strd    r6, r7, [sp]
-        .cfi_rel_offset r6, 8
-        .cfi_rel_offset r7, 12
-        mvn     r6, #0  /* all F */
-        mov     r7, #0  /* all 0 */
-        .endm   /* init */
-
-        .macro  magic_compare_and_branch w1 w2 label
-        /* Macro to compare registers w1 and w2 and conditionally branch to label.  */
-        cmp     \w1, \w2        /* Are w1 and w2 the same?  */
-        magic_find_zero_bytes \w1
-        it      eq
-        cmpeq   ip, #0          /* Is there a zero byte in w1?  */
-        bne     \label
-        .endm /* magic_compare_and_branch */
-
-        .macro  magic_find_zero_bytes w1
-        /* Macro to find all-zero bytes in w1, result is in ip.  */
-#if (defined (__ARM_FEATURE_DSP))
-        uadd8   ip, \w1, r6
-        sel     ip, r7, r6
-#else /* not defined (__ARM_FEATURE_DSP) */
-        /* __ARM_FEATURE_DSP is not defined for some Cortex-M processors.
-        Coincidently, these processors only have Thumb-2 mode, where we can use the
-        the (large) magic constant available directly as an immediate in instructions.
-        Note that we cannot use the magic constant in ARM mode, where we need
-        to create the constant in a register.  */
-        sub     ip, \w1, #0x01010101
-        bic     ip, ip, \w1
-        and     ip, ip, #0x80808080
-#endif /* not defined (__ARM_FEATURE_DSP) */
-        .endm /* magic_find_zero_bytes */
-
-        .macro  setup_return w1 w2
-#ifdef __ARMEB__
-        mov     r1, \w1
-        mov     r2, \w2
-#else /* not  __ARMEB__ */
-        rev     r1, \w1
-        rev     r2, \w2
-#endif /* not  __ARMEB__ */
-        .endm /* setup_return */
-
-        .cfi_startproc
-        pld [r0, #0]
-        pld [r1, #0]
-
-        /* Are both strings double-word aligned?  */
-        orr     ip, r0, r1
-        tst     ip, #7
-        bne     .L_do_align
-
-        /* Fast path.  */
-        .save   {r4-r7}
-        init
-
-.L_doubleword_aligned:
-
-        /* Get here when the strings to compare are double-word aligned.  */
-        /* Compare two words in every iteration.  */
-        .p2align        2
-2:
-        pld [r0, #16]
-        pld [r1, #16]
-
-        /* Load the next double-word from each string.  */
-        ldrd    r2, r3, [r0], #8
-        ldrd    r4, r5, [r1], #8
-
-        magic_compare_and_branch w1=r2, w2=r4, label=.L_return_24
-        magic_compare_and_branch w1=r3, w2=r5, label=.L_return_35
-        b       2b
-
-.L_do_align:
-        /* Is the first string word-aligned?  */
-        ands    ip, r0, #3
-        beq     .L_word_aligned_r0
-
-        /* Fast compare byte by byte until the first string is word-aligned.  */
-        /* The offset of r0 from a word boundary is in ip. Thus, the number of bytes
-        to read until the next word boundary is 4-ip.  */
-        bic     r0, r0, #3
-        ldr     r2, [r0], #4
-        lsls    ip, ip, #31
-        beq     .L_byte2
-        bcs     .L_byte3
-
-.L_byte1:
-        ldrb    ip, [r1], #1
-        uxtb    r3, r2, ror #BYTE1_OFFSET
-        subs    ip, r3, ip
-        bne     .L_fast_return
-        m_cbz   reg=r3, label=.L_fast_return
-
-.L_byte2:
-        ldrb    ip, [r1], #1
-        uxtb    r3, r2, ror #BYTE2_OFFSET
-        subs    ip, r3, ip
-        bne     .L_fast_return
-        m_cbz   reg=r3, label=.L_fast_return
-
-.L_byte3:
-        ldrb    ip, [r1], #1
-        uxtb    r3, r2, ror #BYTE3_OFFSET
-        subs    ip, r3, ip
-        bne     .L_fast_return
-        m_cbnz  reg=r3, label=.L_word_aligned_r0
-
-.L_fast_return:
-        mov     r0, ip
-        bx      lr
-
-.L_word_aligned_r0:
-        init
-        /* The first string is word-aligned.  */
-        /* Is the second string word-aligned?  */
-        ands    ip, r1, #3
-        bne     .L_strcmp_unaligned
-
-.L_word_aligned:
-        /* The strings are word-aligned. */
-        /* Is the first string double-word aligned?  */
-        tst     r0, #4
-        beq     .L_doubleword_aligned_r0
-
-        /* If r0 is not double-word aligned yet, align it by loading
-        and comparing the next word from each string.  */
-        ldr     r2, [r0], #4
-        ldr     r4, [r1], #4
-        magic_compare_and_branch w1=r2 w2=r4 label=.L_return_24
-
-.L_doubleword_aligned_r0:
-        /* Get here when r0 is double-word aligned.  */
-        /* Is r1 doubleword_aligned?  */
-        tst     r1, #4
-        beq     .L_doubleword_aligned
-
-        /* Get here when the strings to compare are word-aligned,
-        r0 is double-word aligned, but r1 is not double-word aligned.  */
-
-        /* Initialize the queue.  */
-        ldr     r5, [r1], #4
-
-        /* Compare two words in every iteration.  */
-        .p2align        2
-3:
-        pld [r0, #16]
-        pld [r1, #16]
-
-        /* Load the next double-word from each string and compare.  */
-        ldrd    r2, r3, [r0], #8
-        magic_compare_and_branch w1=r2 w2=r5 label=.L_return_25
-        ldrd    r4, r5, [r1], #8
-        magic_compare_and_branch w1=r3 w2=r4 label=.L_return_34
-        b       3b
-
-        .macro miscmp_word offsetlo offsethi
-        /* Macro to compare misaligned strings.  */
-        /* r0, r1 are word-aligned, and at least one of the strings
-        is not double-word aligned.  */
-        /* Compare one word in every loop iteration.  */
-        /* OFFSETLO is the original bit-offset of r1 from a word-boundary,
-        OFFSETHI is 32 - OFFSETLO (i.e., offset from the next word).  */
-
-        /* Initialize the shift queue.  */
-        ldr     r5, [r1], #4
-
-        /* Compare one word from each string in every loop iteration.  */
-        .p2align        2
-7:
-        ldr     r3, [r0], #4
-        S2LOMEM r5, r5, #\offsetlo
-        magic_find_zero_bytes w1=r3
-        cmp     r7, ip, S2HIMEM #\offsetlo
-        and     r2, r3, r6, S2LOMEM #\offsetlo
-        it      eq
-        cmpeq   r2, r5
-        bne     .L_return_25
-        ldr     r5, [r1], #4
-        cmp     ip, #0
-        eor r3, r2, r3
-        S2HIMEM r2, r5, #\offsethi
-        it      eq
-        cmpeq   r3, r2
-        bne     .L_return_32
-        b       7b
-        .endm /* miscmp_word */
-
-.L_strcmp_unaligned:
-        /* r0 is word-aligned, r1 is at offset ip from a word.  */
-        /* Align r1 to the (previous) word-boundary.  */
-        bic     r1, r1, #3
-
-        /* Unaligned comparison word by word using LDRs. */
-        cmp     ip, #2
-        beq     .L_miscmp_word_16                 /* If ip == 2.  */
-        bge     .L_miscmp_word_24                 /* If ip == 3.  */
-        miscmp_word offsetlo=8 offsethi=24        /* If ip == 1.  */
-.L_miscmp_word_16:  miscmp_word offsetlo=16 offsethi=16
-.L_miscmp_word_24:  miscmp_word offsetlo=24 offsethi=8
-
-
-.L_return_32:
-        setup_return w1=r3, w2=r2
-        b       .L_do_return
-.L_return_34:
-        setup_return w1=r3, w2=r4
-        b       .L_do_return
-.L_return_25:
-        setup_return w1=r2, w2=r5
-        b       .L_do_return
-.L_return_35:
-        setup_return w1=r3, w2=r5
-        b       .L_do_return
-.L_return_24:
-        setup_return w1=r2, w2=r4
-
-.L_do_return:
-
-#ifdef __ARMEB__
-        mov     r0, ip
-#else /* not  __ARMEB__ */
-        rev     r0, ip
-#endif /* not  __ARMEB__ */
-
-        /* Restore temporaries early, before computing the return value.  */
-        ldrd    r6, r7, [sp]
-        ldrd    r4, r5, [sp, #8]
-        adds    sp, sp, #16
-        .cfi_def_cfa_offset 0
-        .cfi_restore r4
-        .cfi_restore r5
-        .cfi_restore r6
-        .cfi_restore r7
-
-        /* There is a zero or a different byte between r1 and r2.  */
-        /* r0 contains a mask of all-zero bytes in r1.  */
-        /* Using r0 and not ip here because cbz requires low register.  */
-        m_cbz   reg=r0, label=.L_compute_return_value
-        clz     r0, r0
-        /* r0 contains the number of bits on the left of the first all-zero byte in r1.  */
-        rsb     r0, r0, #24
-        /* Here, r0 contains the number of bits on the right of the first all-zero byte in r1.  */
-        lsr     r1, r1, r0
-        lsr     r2, r2, r0
-
-.L_compute_return_value:
-        movs    r0, #1
-        cmp     r1, r2
-        /* The return value is computed as follows.
-        If r1>r2 then (C==1 and Z==0) and LS doesn't hold and r0 is #1 at return.
-        If r1<r2 then (C==0 and Z==0) and we execute SBC with carry_in=0,
-        which means r0:=r0-r0-1 and r0 is #-1 at return.
-        If r1=r2 then (C==1 and Z==1) and we execute SBC with carry_in=1,
-        which means r0:=r0-r0 and r0 is #0 at return.
-        (C==0 and Z==1) cannot happen because the carry bit is "not borrow".  */
-        it      ls
-        sbcls   r0, r0, r0
-        bx      lr
-        .cfi_endproc
-END(strcmp)

libc/arch-arm/cortex-a15/bionic/strcpy.S

@@ -1,451 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-/*
- * Copyright (c) 2013 ARM Ltd
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the company may not be used to endorse or promote
- *    products derived from this software without specific prior written
- *    permission.
- *
- * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <machine/asm.h>
-
-    .syntax unified
-
-    .thumb
-    .thumb_func
-
-    .macro m_push
-    push    {r0, r4, r5, lr}
-    .endm // m_push
-
-    .macro m_pop
-    pop     {r0, r4, r5, pc}
-    .endm // m_pop
-
-    .macro m_copy_byte reg, cmd, label
-    ldrb    \reg, [r1], #1
-    strb    \reg, [r0], #1
-    \cmd    \reg, \label
-    .endm // m_copy_byte
-
-ENTRY(strcpy)
-    // For short copies, hard-code checking the first 8 bytes since this
-    // new code doesn't win until after about 8 bytes.
-    m_push
-    m_copy_byte reg=r2, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r3, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r4, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r5, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r2, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r3, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r4, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r5, cmd=cbnz, label=strcpy_continue
-
-strcpy_finish:
-    m_pop
-
-strcpy_continue:
-    pld     [r1, #0]
-    ands    r3, r0, #7
-    beq     strcpy_check_src_align
-
-    // Align to a double word (64 bits).
-    rsb     r3, r3, #8
-    lsls    ip, r3, #31
-    beq     strcpy_align_to_32
-
-    ldrb    r2, [r1], #1
-    strb    r2, [r0], #1
-    cbz     r2, strcpy_complete
-
-strcpy_align_to_32:
-    bcc     strcpy_align_to_64
-
-    ldrb    r2, [r1], #1
-    strb    r2, [r0], #1
-    cbz     r2, strcpy_complete
-    ldrb    r2, [r1], #1
-    strb    r2, [r0], #1
-    cbz     r2, strcpy_complete
-
-strcpy_align_to_64:
-    tst     r3, #4
-    beq     strcpy_check_src_align
-    ldr     r2, [r1], #4
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-    str     r2, [r0], #4
-
-strcpy_check_src_align:
-    // At this point dst is aligned to a double word, check if src
-    // is also aligned to a double word.
-    ands    r3, r1, #7
-    bne     strcpy_unaligned_copy
-
-    .p2align 2
-strcpy_mainloop:
-    ldrd    r2, r3, [r1], #8
-
-    pld     [r1, #64]
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
-
-    strd    r2, r3, [r0], #8
-    b       strcpy_mainloop
-
-strcpy_complete:
-    m_pop
-
-strcpy_zero_in_first_register:
-    lsls    lr, ip, #17
-    bne     strcpy_copy1byte
-    bcs     strcpy_copy2bytes
-    lsls    ip, ip, #1
-    bne     strcpy_copy3bytes
-
-strcpy_copy4bytes:
-    // Copy 4 bytes to the destiniation.
-    str     r2, [r0]
-    m_pop
-
-strcpy_copy1byte:
-    strb    r2, [r0]
-    m_pop
-
-strcpy_copy2bytes:
-    strh    r2, [r0]
-    m_pop
-
-strcpy_copy3bytes:
-    strh    r2, [r0], #2
-    lsr     r2, #16
-    strb    r2, [r0]
-    m_pop
-
-strcpy_zero_in_second_register:
-    lsls    lr, ip, #17
-    bne     strcpy_copy5bytes
-    bcs     strcpy_copy6bytes
-    lsls    ip, ip, #1
-    bne     strcpy_copy7bytes
-
-    // Copy 8 bytes to the destination.
-    strd    r2, r3, [r0]
-    m_pop
-
-strcpy_copy5bytes:
-    str     r2, [r0], #4
-    strb    r3, [r0]
-    m_pop
-
-strcpy_copy6bytes:
-    str     r2, [r0], #4
-    strh    r3, [r0]
-    m_pop
-
-strcpy_copy7bytes:
-    str     r2, [r0], #4
-    strh    r3, [r0], #2
-    lsr     r3, #16
-    strb    r3, [r0]
-    m_pop
-
-strcpy_unaligned_copy:
-    // Dst is aligned to a double word, while src is at an unknown alignment.
-    // There are 7 different versions of the unaligned copy code
-    // to prevent overreading the src. The mainloop of every single version
-    // will store 64 bits per loop. The difference is how much of src can
-    // be read without potentially crossing a page boundary.
-    tbb     [pc, r3]
-strcpy_unaligned_branchtable:
-    .byte 0
-    .byte ((strcpy_unalign7 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign6 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign5 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign4 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign3 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign2 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign1 - strcpy_unaligned_branchtable)/2)
-
-    .p2align 2
-    // Can read 7 bytes before possibly crossing a page.
-strcpy_unalign7:
-    ldr     r2, [r1], #4
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-
-    ldrb    r3, [r1]
-    cbz     r3, strcpy_unalign7_copy5bytes
-    ldrb    r4, [r1, #1]
-    cbz     r4, strcpy_unalign7_copy6bytes
-    ldrb    r5, [r1, #2]
-    cbz     r5, strcpy_unalign7_copy7bytes
-
-    ldr     r3, [r1], #4
-    pld     [r1, #64]
-
-    lsrs    ip, r3, #24
-    strd    r2, r3, [r0], #8
-    beq     strcpy_unalign_return
-    b       strcpy_unalign7
-
-strcpy_unalign7_copy5bytes:
-    str     r2, [r0], #4
-    strb    r3, [r0]
-strcpy_unalign_return:
-    m_pop
-
-strcpy_unalign7_copy6bytes:
-    str     r2, [r0], #4
-    strb    r3, [r0], #1
-    strb    r4, [r0], #1
-    m_pop
-
-strcpy_unalign7_copy7bytes:
-    str     r2, [r0], #4
-    strb    r3, [r0], #1
-    strb    r4, [r0], #1
-    strb    r5, [r0], #1
-    m_pop
-
-    .p2align 2
-    // Can read 6 bytes before possibly crossing a page.
-strcpy_unalign6:
-    ldr     r2, [r1], #4
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-
-    ldrb    r4, [r1]
-    cbz     r4, strcpy_unalign_copy5bytes
-    ldrb    r5, [r1, #1]
-    cbz     r5, strcpy_unalign_copy6bytes
-
-    ldr     r3, [r1], #4
-    pld     [r1, #64]
-
-    tst     r3, #0xff0000
-    beq     strcpy_copy7bytes
-    lsrs    ip, r3, #24
-    strd    r2, r3, [r0], #8
-    beq     strcpy_unalign_return
-    b       strcpy_unalign6
-
-    .p2align 2
-    // Can read 5 bytes before possibly crossing a page.
-strcpy_unalign5:
-    ldr     r2, [r1], #4
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-
-    ldrb    r4, [r1]
-    cbz     r4, strcpy_unalign_copy5bytes
-
-    ldr     r3, [r1], #4
-
-    pld     [r1, #64]
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
-
-    strd    r2, r3, [r0], #8
-    b       strcpy_unalign5
-
-strcpy_unalign_copy5bytes:
-    str     r2, [r0], #4
-    strb    r4, [r0]
-    m_pop
-
-strcpy_unalign_copy6bytes:
-    str     r2, [r0], #4
-    strb    r4, [r0], #1
-    strb    r5, [r0]
-    m_pop
-
-    .p2align 2
-    // Can read 4 bytes before possibly crossing a page.
-strcpy_unalign4:
-    ldr     r2, [r1], #4
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-
-    ldr     r3, [r1], #4
-    pld     [r1, #64]
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
-
-    strd    r2, r3, [r0], #8
-    b       strcpy_unalign4
-
-    .p2align 2
-    // Can read 3 bytes before possibly crossing a page.
-strcpy_unalign3:
-    ldrb    r2, [r1]
-    cbz     r2, strcpy_unalign3_copy1byte
-    ldrb    r3, [r1, #1]
-    cbz     r3, strcpy_unalign3_copy2bytes
-    ldrb    r4, [r1, #2]
-    cbz     r4, strcpy_unalign3_copy3bytes
-
-    ldr     r2, [r1], #4
-    ldr     r3, [r1], #4
-
-    pld     [r1, #64]
-
-    lsrs    lr, r2, #24
-    beq     strcpy_copy4bytes
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
-
-    strd    r2, r3, [r0], #8
-    b       strcpy_unalign3
-
-strcpy_unalign3_copy1byte:
-    strb    r2, [r0]
-    m_pop
-
-strcpy_unalign3_copy2bytes:
-    strb    r2, [r0], #1
-    strb    r3, [r0]
-    m_pop
-
-strcpy_unalign3_copy3bytes:
-    strb    r2, [r0], #1
-    strb    r3, [r0], #1
-    strb    r4, [r0]
-    m_pop
-
-    .p2align 2
-    // Can read 2 bytes before possibly crossing a page.
-strcpy_unalign2:
-    ldrb    r2, [r1]
-    cbz     r2, strcpy_unalign_copy1byte
-    ldrb    r4, [r1, #1]
-    cbz     r4, strcpy_unalign_copy2bytes
-
-    ldr     r2, [r1], #4
-    ldr     r3, [r1], #4
-    pld     [r1, #64]
-
-    tst     r2, #0xff0000
-    beq     strcpy_copy3bytes
-    lsrs    ip, r2, #24
-    beq     strcpy_copy4bytes
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
-
-    strd    r2, r3, [r0], #8
-    b       strcpy_unalign2
-
-    .p2align 2
-    // Can read 1 byte before possibly crossing a page.
-strcpy_unalign1:
-    ldrb    r2, [r1]
-    cbz     r2, strcpy_unalign_copy1byte
-
-    ldr     r2, [r1], #4
-    ldr     r3, [r1], #4
-
-    pld     [r1, #64]
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
-
-    strd    r2, r3, [r0], #8
-    b       strcpy_unalign1
-
-strcpy_unalign_copy1byte:
-    strb    r2, [r0]
-    m_pop
-
-strcpy_unalign_copy2bytes:
-    strb    r2, [r0], #1
-    strb    r4, [r0]
-    m_pop
-END(strcpy)

libc/arch-arm/cortex-a15/bionic/strlen.S

@@ -1,165 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-/*
- * Copyright (c) 2013 ARM Ltd
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the company may not be used to endorse or promote
- *    products derived from this software without specific prior written
- *    permission.
- *
- * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <machine/asm.h>
-
-    .syntax unified
-
-    .thumb
-    .thumb_func
-
-ENTRY(strlen)
-    pld     [r0, #0]
-    mov     r1, r0
-
-    ands    r3, r0, #7
-    beq     mainloop
-
-    // Align to a double word (64 bits).
-    rsb     r3, r3, #8
-    lsls    ip, r3, #31
-    beq     align_to_32
-
-    ldrb    r2, [r1], #1
-    cbz     r2, update_count_and_return
-
-align_to_32:
-    bcc     align_to_64
-    ands    ip, r3, #2
-    beq     align_to_64
-
-    ldrb    r2, [r1], #1
-    cbz     r2, update_count_and_return
-    ldrb    r2, [r1], #1
-    cbz     r2, update_count_and_return
-
-align_to_64:
-    tst     r3, #4
-    beq     mainloop
-    ldr     r3, [r1], #4
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     zero_in_second_register
-
-    .p2align 2
-mainloop:
-    ldrd    r2, r3, [r1], #8
-
-    pld     [r1, #64]
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     zero_in_first_register
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     zero_in_second_register
-    b       mainloop
-
-update_count_and_return:
-    sub     r0, r1, r0
-    sub     r0, r0, #1
-    bx      lr
-
-zero_in_first_register:
-    sub     r0, r1, r0
-    lsls    r3, ip, #17
-    bne     sub8_and_return
-    bcs     sub7_and_return
-    lsls    ip, ip, #1
-    bne     sub6_and_return
-
-    sub     r0, r0, #5
-    bx      lr
-
-sub8_and_return:
-    sub     r0, r0, #8
-    bx      lr
-
-sub7_and_return:
-    sub     r0, r0, #7
-    bx      lr
-
-sub6_and_return:
-    sub     r0, r0, #6
-    bx      lr
-
-zero_in_second_register:
-    sub     r0, r1, r0
-    lsls    r3, ip, #17
-    bne     sub4_and_return
-    bcs     sub3_and_return
-    lsls    ip, ip, #1
-    bne     sub2_and_return
-
-    sub     r0, r0, #1
-    bx      lr
-
-sub4_and_return:
-    sub     r0, r0, #4
-    bx      lr
-
-sub3_and_return:
-    sub     r0, r0, #3
-    bx      lr
-
-sub2_and_return:
-    sub     r0, r0, #2
-    bx      lr
-END(strlen)

libc/arch-arm/cortex-a15/cortex-a15.mk

@@ -1,10 +0,0 @@
-$(call libc-add-cpu-variant-src,MEMCPY,arch-arm/cortex-a15/bionic/memcpy.S)
-$(call libc-add-cpu-variant-src,MEMSET,arch-arm/cortex-a15/bionic/memset.S)
-$(call libc-add-cpu-variant-src,STRCAT,arch-arm/cortex-a15/bionic/strcat.S)
-$(call libc-add-cpu-variant-src,STRCMP,arch-arm/cortex-a15/bionic/strcmp.S)
-$(call libc-add-cpu-variant-src,STRCPY,arch-arm/cortex-a15/bionic/strcpy.S)
-$(call libc-add-cpu-variant-src,STRLEN,arch-arm/cortex-a15/bionic/strlen.S)
-$(call libc-add-cpu-variant-src,__STRCAT_CHK,arch-arm/cortex-a15/bionic/__strcat_chk.S)
-$(call libc-add-cpu-variant-src,__STRCPY_CHK,arch-arm/cortex-a15/bionic/__strcpy_chk.S)
-
-include bionic/libc/arch-arm/generic/generic.mk

libc/arch-arm/cortex-a7/cortex-a7.mk

@@ -1 +0,0 @@
-include bionic/libc/arch-arm/cortex-a15/cortex-a15.mk

libc/arch-arm/cortex-a8/cortex-a8.mk

@@ -1 +0,0 @@
-include bionic/libc/arch-arm/cortex-a15/cortex-a15.mk

libc/arch-arm/cortex-a9/bionic/__strcat_chk.S

@@ -1,230 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <machine/asm.h>
-#include "libc_events.h"
-
-    .syntax unified
-    .fpu    neon
-    .thumb
-    .thumb_func
-
-// Get the length of src string, then get the source of the dst string.
-// Check that the two lengths together don't exceed the threshold, then
-// do a memcpy of the data.
-ENTRY(__strcat_chk)
-    .cfi_startproc
-    pld     [r0, #0]
-    push    {r0, lr}
-    .save   {r0, lr}
-    .cfi_def_cfa_offset 8
-    .cfi_rel_offset r0, 0
-    .cfi_rel_offset lr, 4
-    push    {r4, r5}
-    .save   {r4, r5}
-    .cfi_adjust_cfa_offset 8
-    .cfi_rel_offset r4, 0
-    .cfi_rel_offset r5, 4
-
-    mov     lr, r2
-
-    // Save the dst register to r5
-    mov     r5, r0
-
-    // Zero out r4
-    eor     r4, r4, r4
-
-    // r1 contains the address of the string to count.
-.L_strlen_start:
-    mov     r0, r1
-
-    ands    r3, r0, #7
-    bne     .L_align_src
-
-    .p2align 2
-.L_mainloop:
-    ldmia   r1!, {r2, r3}
-
-    pld     [r1, #64]
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     .L_zero_in_first_register
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     .L_zero_in_second_register
-    b       .L_mainloop
-
-.L_zero_in_first_register:
-    sub     r3, r1, r0
-    // Check for zero in byte 0.
-    lsls    r2, ip, #17
-    beq     .L_check_byte1_reg1
-
-    sub     r3, r3, #8
-    b       .L_finish
-
-.L_check_byte1_reg1:
-    bcc     .L_check_byte2_reg1
-
-    sub     r3, r3, #7
-    b       .L_finish
-
-.L_check_byte2_reg1:
-    // Check for zero in byte 2.
-    tst     ip, #0x800000
-    it      ne
-    subne   r3, r3, #6
-    bne     .L_finish
-    sub     r3, r3, #5
-    b       .L_finish
-
-.L_zero_in_second_register:
-    sub     r3, r1, r0
-    // Check for zero in byte 0.
-    lsls    r2, ip, #17
-    beq     .L_check_byte1_reg2
-
-    sub     r3, r3, #4
-    b       .L_finish
-
-.L_check_byte1_reg2:
-    bcc     .L_check_byte2_reg2
-
-    sub     r3, r3, #3
-    b       .L_finish
-
-.L_check_byte2_reg2:
-    // Check for zero in byte 2.
-    tst     ip, #0x800000
-    it      ne
-    subne   r3, r3, #2
-    bne     .L_finish
-    sub     r3, r3, #1
-    b       .L_finish
-
-.L_align_src:
-    // Align to a double word (64 bits).
-    rsb     r3, r3, #8
-    lsls    ip, r3, #31
-    beq     .L_align_to_32
-
-    ldrb    r2, [r1], #1
-    cbz     r2, .L_done
-
-.L_align_to_32:
-    bcc     .L_align_to_64
-
-    ldrb    r2, [r1], #1
-    cbz     r2, .L_done
-    ldrb    r2, [r1], #1
-    cbz     r2, .L_done
-
-.L_align_to_64:
-    tst     r3, #4
-    beq     .L_mainloop
-    ldr     r2, [r1], #4
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     .L_zero_in_second_register
-    b       .L_mainloop
-
-.L_done:
-    sub     r3, r1, r0
-    sub     r3, r3, #1
-
-.L_finish:
-    cmp     r4, #0
-    bne     .L_strlen_done
-
-    // Time to get the dst string length.
-    mov     r1, r5
-
-    // Save the original source address to r5.
-    mov     r5, r0
-
-    // Save the current length (adding 1 for the terminator).
-    add     r4, r3, #1
-    b       .L_strlen_start
-
-    // r0 holds the pointer to the dst string.
-    // r3 holds the dst string length.
-    // r4 holds the src string length + 1.
-.L_strlen_done:
-    add     r2, r3, r4
-    cmp     r2, lr
-    bhi     __strcat_chk_fail
-
-    // Set up the registers for the memcpy code.
-    mov     r1, r5
-    pld     [r1, #64]
-    mov     r2, r4
-    add     r0, r0, r3
-    pop     {r4, r5}
-
-    // Fall through into the memcpy_base function.
-    .cfi_endproc
-END(__strcat_chk)
-
-#define MEMCPY_BASE         __strcat_chk_memcpy_base
-#define MEMCPY_BASE_ALIGNED __strcat_chk_memcpy_base_aligned
-#include "memcpy_base.S"
-
-ENTRY(__strcat_chk_fail)
-    .cfi_startproc
-
-    .save   {r0, lr}
-    .save   {r4, r5}
-    .cfi_def_cfa_offset 8
-    .cfi_rel_offset r0, 0
-    .cfi_rel_offset lr, 4
-    .cfi_adjust_cfa_offset 8
-    .cfi_rel_offset r4, 0
-    .cfi_rel_offset r5, 4
-
-    ldr     r0, error_message
-    ldr     r1, error_code
-1:
-    add     r0, pc
-    bl      __fortify_chk_fail
-error_code:
-    .word   BIONIC_EVENT_STRCAT_BUFFER_OVERFLOW
-error_message:
-    .word   error_string-(1b+4)
-
-    .cfi_endproc
-END(__strcat_chk_fail)
-
-    .data
-error_string:
-    .string "strcat buffer overflow"

libc/arch-arm/cortex-a9/bionic/__strcpy_chk.S

@@ -1,194 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <machine/asm.h>
-#include "libc_events.h"
-
-    .syntax unified
-    .fpu    neon
-    .thumb
-    .thumb_func
-
-// Get the length of the source string first, then do a memcpy of the data
-// instead of a strcpy.
-ENTRY(__strcpy_chk)
-    .cfi_startproc
-    pld     [r0, #0]
-    push    {r0, lr}
-    .save   {r0, lr}
-    .cfi_def_cfa_offset 8
-    .cfi_rel_offset r0, 0
-    .cfi_rel_offset lr, 4
-
-    mov     lr, r2
-    mov     r0, r1
-
-    ands    r3, r0, #7
-    bne     .L_align_src
-
-    .p2align 2
-.L_mainloop:
-    ldmia   r0!, {r2, r3}
-
-    pld     [r0, #64]
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     .L_zero_in_first_register
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     .L_zero_in_second_register
-    b       .L_mainloop
-
-.L_zero_in_first_register:
-    sub     r3, r0, r1
-    // Check for zero in byte 0.
-    lsls    r2, ip, #17
-    beq     .L_check_byte1_reg1
-
-    sub     r3, r3, #8
-    b       .L_check_size
-
-.L_check_byte1_reg1:
-    bcc     .L_check_byte2_reg1
-
-    sub     r3, r3, #7
-    b       .L_check_size
-
-.L_check_byte2_reg1:
-    // Check for zero in byte 2.
-    tst     ip, #0x800000
-    it      ne
-    subne   r3, r3, #6
-    bne     .L_check_size
-    sub     r3, r3, #5
-    b       .L_check_size
-
-.L_zero_in_second_register:
-    sub     r3, r0, r1
-    // Check for zero in byte 0.
-    lsls    r2, ip, #17
-    beq     .L_check_byte1_reg2
-
-    sub     r3, r3, #4
-    b       .L_check_size
-
-.L_check_byte1_reg2:
-    bcc     .L_check_byte2_reg2
-
-    sub     r3, r3, #3
-    b       .L_check_size
-
-.L_check_byte2_reg2:
-    // Check for zero in byte 2.
-    tst     ip, #0x800000
-    it      ne
-    subne   r3, r3, #2
-    bne     .L_check_size
-    sub     r3, r3, #1
-    b       .L_check_size
-
-.L_align_src:
-    // Align to a double word (64 bits).
-    rsb     r3, r3, #8
-    lsls    ip, r3, #31
-    beq     .L_align_to_32
-
-    ldrb    r2, [r0], #1
-    cbz     r2, .L_done
-
-.L_align_to_32:
-    bcc     .L_align_to_64
-
-    ldrb    r2, [r0], #1
-    cbz     r2, .L_done
-    ldrb    r2, [r0], #1
-    cbz     r2, .L_done
-
-.L_align_to_64:
-    tst     r3, #4
-    beq     .L_mainloop
-    ldr     r2, [r0], #4
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     .L_zero_in_second_register
-    b       .L_mainloop
-
-.L_done:
-    sub     r3, r0, r1
-    sub     r3, r3, #1
-
-.L_check_size:
-    pld     [r1, #0]
-    pld     [r1, #64]
-    ldr     r0, [sp]
-    cmp     r3, lr
-    bhs     __strcpy_chk_fail
-
-    // Add 1 for copy length to get the string terminator.
-    add     r2, r3, #1
-
-    .cfi_endproc
-
-    // Fall through into the memcpy_base function.
-END(__strcpy_chk)
-
-#define MEMCPY_BASE         __strcpy_chk_memcpy_base
-#define MEMCPY_BASE_ALIGNED __strcpy_chk_memcpy_base_aligned
-#include "memcpy_base.S"
-
-ENTRY(__strcpy_chk_fail)
-    .cfi_startproc
-
-    .save   {r0, lr}
-    .cfi_def_cfa_offset 8
-    .cfi_rel_offset r0, 0
-    .cfi_rel_offset lr, 4
-
-    ldr     r0, error_message
-    ldr     r1, error_code
-1:
-    add     r0, pc
-    bl      __fortify_chk_fail
-
-error_code:
-    .word   BIONIC_EVENT_STRCPY_BUFFER_OVERFLOW
-error_message:
-    .word   error_string-(1b+4)
-
-    .cfi_endproc
-END(__strcpy_chk_fail)
-
-    .data
-error_string:
-    .string "strcpy buffer overflow"

libc/arch-arm/cortex-a9/bionic/memcpy.S

@@ -1,92 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <machine/asm.h>
-#include "libc_events.h"
-
-/*
- * This code assumes it is running on a processor that supports all arm v7
- * instructions, that supports neon instructions, and that has a 32 byte
- * cache line.
- */
-
-        .syntax unified
-        .fpu    neon
-        .thumb
-        .thumb_func
-
-ENTRY(__memcpy_chk)
-        .cfi_startproc
-        cmp         r2, r3
-        bhi         __memcpy_chk_fail
-
-        // Fall through to memcpy...
-        .cfi_endproc
-END(__memcpy_chk)
-
-ENTRY(memcpy)
-        .cfi_startproc
-
-        pld     [r1, #0]
-        stmfd   sp!, {r0, lr}
-        .save   {r0, lr}
-        .cfi_def_cfa_offset 8
-        .cfi_rel_offset r0, 0
-        .cfi_rel_offset lr, 4
-        pld     [r1, #64]
-
-        .cfi_endproc
-END(memcpy)
-
-#define MEMCPY_BASE         __memcpy_base
-#define MEMCPY_BASE_ALIGNED __memcpy_base_aligned
-#include "memcpy_base.S"
-
-ENTRY(__memcpy_chk_fail)
-        .cfi_startproc
-        // Preserve lr for backtrace.
-        push    {lr}
-        .save   {lr}
-        .cfi_def_cfa_offset 4
-        .cfi_rel_offset lr, 0
-
-        ldr     r0, error_message
-        ldr     r1, error_code
-1:
-        add     r0, pc
-        bl      __fortify_chk_fail
-error_code:
-        .word   BIONIC_EVENT_MEMCPY_BUFFER_OVERFLOW
-error_message:
-        .word   error_string-(1b+4)
-        .cfi_endproc
-END(__memcpy_chk_fail)
-
-        .data
-error_string:
-        .string     "memcpy buffer overflow"

libc/arch-arm/cortex-a9/bionic/memcpy_base.S

@@ -1,233 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-/*
- * This code assumes it is running on a processor that supports all arm v7
- * instructions, that supports neon instructions, and that has a 32 byte
- * cache line.
- */
-
-ENTRY(MEMCPY_BASE)
-        .cfi_startproc
-        .save       {r0, lr}
-        .cfi_def_cfa_offset 8
-        .cfi_rel_offset r0, 0
-        .cfi_rel_offset lr, 4
-
-        // Check so divider is at least 16 bytes, needed for alignment code.
-        cmp         r2, #16
-        blo         5f
-
-        /* check if buffers are aligned. If so, run arm-only version */
-        eor         r3, r0, r1
-        ands        r3, r3, #0x3
-        beq         __memcpy_base_aligned
-
-        /* Check the upper size limit for Neon unaligned memory access in memcpy */
-        cmp         r2, #224
-        blo         3f
-
-        /* align destination to 16 bytes for the write-buffer */
-        rsb         r3, r0, #0
-        ands        r3, r3, #0xF
-        beq         3f
-
-        /* copy up to 15-bytes (count in r3) */
-        sub         r2, r2, r3
-        movs        ip, r3, lsl #31
-        itt         mi
-        ldrbmi      lr, [r1], #1
-        strbmi      lr, [r0], #1
-        itttt       cs
-        ldrbcs      ip, [r1], #1
-        ldrbcs      lr, [r1], #1
-        strbcs      ip, [r0], #1
-        strbcs      lr, [r0], #1
-        movs        ip, r3, lsl #29
-        bge         1f
-        // copies 4 bytes, destination 32-bits aligned
-        vld1.32     {d0[0]}, [r1]!
-        vst1.32     {d0[0]}, [r0, :32]!
-1:      bcc         2f
-        // copies 8 bytes, destination 64-bits aligned
-        vld1.8      {d0}, [r1]!
-        vst1.8      {d0}, [r0, :64]!
-2:
-        /* preload immediately the next cache line, which we may need */
-        pld         [r1, #0]
-        pld         [r1, #(32 * 2)]
-3:
-        /* make sure we have at least 64 bytes to copy */
-        subs        r2, r2, #64
-        blo         2f
-
-        /* preload all the cache lines we need */
-        pld         [r1, #(32 * 4)]
-        pld         [r1, #(32 * 6)]
-
-1:      /* The main loop copies 64 bytes at a time */
-        vld1.8      {d0 - d3}, [r1]!
-        vld1.8      {d4 - d7}, [r1]!
-        pld         [r1, #(32 * 6)]
-        subs        r2, r2, #64
-        vst1.8      {d0 - d3}, [r0]!
-        vst1.8      {d4 - d7}, [r0]!
-        bhs         1b
-
-2:      /* fix-up the remaining count and make sure we have >= 32 bytes left */
-        add         r2, r2, #64
-        subs        r2, r2, #32
-        blo         4f
-
-3:      /* 32 bytes at a time. These cache lines were already preloaded */
-        vld1.8      {d0 - d3}, [r1]!
-        subs        r2, r2, #32
-        vst1.8      {d0 - d3}, [r0]!
-        bhs         3b
-
-4:      /* less than 32 left */
-        add         r2, r2, #32
-        tst         r2, #0x10
-        beq         5f
-        // copies 16 bytes, 128-bits aligned
-        vld1.8      {d0, d1}, [r1]!
-        vst1.8      {d0, d1}, [r0]!
-5:      /* copy up to 15-bytes (count in r2) */
-        movs        ip, r2, lsl #29
-        bcc         1f
-        vld1.8      {d0}, [r1]!
-        vst1.8      {d0}, [r0]!
-1:      bge         2f
-        vld1.32     {d0[0]}, [r1]!
-        vst1.32     {d0[0]}, [r0]!
-2:      movs        ip, r2, lsl #31
-        itt         mi
-        ldrbmi      r3, [r1], #1
-        strbmi      r3, [r0], #1
-        itttt       cs
-        ldrbcs      ip, [r1], #1
-        ldrbcs      lr, [r1], #1
-        strbcs      ip, [r0], #1
-        strbcs      lr, [r0], #1
-
-        ldmfd       sp!, {r0, lr}
-        bx          lr
-
-        .cfi_endproc
-END(MEMCPY_BASE)
-
-ENTRY(MEMCPY_BASE_ALIGNED)
-        .cfi_startproc
-
-        .save       {r0, lr}
-        .cfi_def_cfa_offset 8
-        .cfi_rel_offset r0, 0
-        .cfi_rel_offset lr, 4
-
-        /* Simple arm-only copy loop to handle aligned copy operations */
-        stmfd       sp!, {r4-r8}
-        .save       {r4-r8}
-        .cfi_adjust_cfa_offset 20
-        .cfi_rel_offset r4, 0
-        .cfi_rel_offset r5, 4
-        .cfi_rel_offset r6, 8
-        .cfi_rel_offset r7, 12
-        .cfi_rel_offset r8, 16
-        pld         [r1, #(32 * 4)]
-
-        /* Check alignment */
-        rsb         r3, r1, #0
-        ands        r3, #3
-        beq         2f
-
-        /* align source to 32 bits. We need to insert 2 instructions between
-         * a ldr[b|h] and str[b|h] because byte and half-word instructions
-         * stall 2 cycles.
-         */
-        movs        r12, r3, lsl #31
-        sub         r2, r2, r3      /* we know that r3 <= r2 because r2 >= 4 */
-        itt         mi
-        ldrbmi      r3, [r1], #1
-        strbmi      r3, [r0], #1
-        itttt       cs
-        ldrbcs      r4, [r1], #1
-        ldrbcs      r5, [r1], #1
-        strbcs      r4, [r0], #1
-        strbcs      r5, [r0], #1
-
-2:
-        subs        r2, r2, #64
-        blt         4f
-
-3:      /* Main copy loop, copying 64 bytes at a time */
-        pld         [r1, #(32 * 8)]
-        ldmia       r1!, {r3, r4, r5, r6, r7, r8, r12, lr}
-        stmia       r0!, {r3, r4, r5, r6, r7, r8, r12, lr}
-        ldmia       r1!, {r3, r4, r5, r6, r7, r8, r12, lr}
-        stmia       r0!, {r3, r4, r5, r6, r7, r8, r12, lr}
-        subs        r2, r2, #64
-        bge         3b
-
-4:      /* Check if there are > 32 bytes left */
-        adds        r2, r2, #64
-        subs        r2, r2, #32
-        blt         5f
-
-        /* Copy 32 bytes */
-        ldmia       r1!, {r3, r4, r5, r6, r7, r8, r12, lr}
-        stmia       r0!, {r3, r4, r5, r6, r7, r8, r12, lr}
-        subs        r2, #32
-
-5:      /* Handle any remaining bytes */
-        adds        r2, #32
-        beq         6f
-
-        movs        r12, r2, lsl #28
-        itt         cs
-        ldmiacs     r1!, {r3, r4, r5, r6}   /* 16 bytes */
-        stmiacs     r0!, {r3, r4, r5, r6}
-        itt         mi
-        ldmiami     r1!, {r7, r8}           /*  8 bytes */
-        stmiami     r0!, {r7, r8}
-        movs        r12, r2, lsl #30
-        itt         cs
-        ldrcs       r3, [r1], #4            /*  4 bytes */
-        strcs       r3, [r0], #4
-        itt         mi
-        ldrhmi      r4, [r1], #2            /*  2 bytes */
-        strhmi      r4, [r0], #2
-        tst         r2, #0x1
-        itt         ne
-        ldrbne      r3, [r1]                /*  last byte  */
-        strbne      r3, [r0]
-6:
-        ldmfd       sp!, {r4-r8}
-        ldmfd       sp!, {r0, pc}
-
-        .cfi_endproc
-END(MEMCPY_BASE_ALIGNED)

libc/arch-arm/cortex-a9/bionic/memset.S

@@ -1,204 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <machine/cpu-features.h>
-#include <machine/asm.h>
-#include "libc_events.h"
-
-/*
- * This code assumes it is running on a processor that supports all arm v7
- * instructions and that supports neon instructions.
- */
-
-    .fpu    neon
-
-ENTRY(__memset_chk)
-        .cfi_startproc
-        cmp         r2, r3
-        bls         .L_done
-
-        // Preserve lr for backtrace.
-        push        {lr}
-        .save       {lr}
-        .cfi_def_cfa_offset 4
-        .cfi_rel_offset lr, 0
-
-        ldr         r0, error_message
-        ldr         r1, error_code
-1:
-        add         r0, pc
-        bl          __fortify_chk_fail
-error_code:
-        .word       BIONIC_EVENT_MEMSET_BUFFER_OVERFLOW
-error_message:
-        .word       error_string-(1b+8)
-
-        .cfi_endproc
-END(__memset_chk)
-
-ENTRY(bzero)
-        .cfi_startproc
-        mov     r2, r1
-        mov     r1, #0
-
-.L_done:
-        // Fall through to memset...
-        .cfi_endproc
-END(bzero)
-
-/* memset() returns its first argument.  */
-ENTRY(memset)
-        .cfi_startproc
-
-        # The neon memset only wins for less than 132.
-        cmp         r2, #132
-        bhi         __memset_large_copy
-
-        stmfd       sp!, {r0}
-        .save       {r0}
-        .cfi_def_cfa_offset 4
-        .cfi_rel_offset r0, 0
-
-        vdup.8      q0, r1
-
-        /* make sure we have at least 32 bytes to write */
-        subs        r2, r2, #32
-        blo         2f
-        vmov        q1, q0
-
-1:      /* The main loop writes 32 bytes at a time */
-        subs        r2, r2, #32
-        vst1.8      {d0 - d3}, [r0]!
-        bhs         1b
-
-2:      /* less than 32 left */
-        add         r2, r2, #32
-        tst         r2, #0x10
-        beq         3f
-
-        // writes 16 bytes, 128-bits aligned
-        vst1.8      {d0, d1}, [r0]!
-3:      /* write up to 15-bytes (count in r2) */
-        movs        ip, r2, lsl #29
-        bcc         1f
-        vst1.8      {d0}, [r0]!
-1:      bge         2f
-        vst1.32     {d0[0]}, [r0]!
-2:      movs        ip, r2, lsl #31
-        strmib      r1, [r0], #1
-        strcsb      r1, [r0], #1
-        strcsb      r1, [r0], #1
-        ldmfd       sp!, {r0}
-        bx          lr
-
-        .cfi_endproc
-END(memset)
-
-ENTRY(__memset_large_copy)
-        .cfi_startproc
-
-        /* compute the offset to align the destination
-         * offset = (4-(src&3))&3 = -src & 3
-         */
-        stmfd       sp!, {r0, r4-r7, lr}
-        .save       {r0, r4-r7, lr}
-        .cfi_def_cfa_offset 24
-        .cfi_rel_offset r0, 0
-        .cfi_rel_offset r4, 4
-        .cfi_rel_offset r5, 8
-        .cfi_rel_offset r6, 12
-        .cfi_rel_offset r7, 16
-        .cfi_rel_offset lr, 20
-
-        rsb         r3, r0, #0
-        ands        r3, r3, #3
-        cmp         r3, r2
-        movhi       r3, r2
-
-        /* splat r1 */
-        mov         r1, r1, lsl #24
-        orr         r1, r1, r1, lsr #8
-        orr         r1, r1, r1, lsr #16
-
-        movs        r12, r3, lsl #31
-        strcsb      r1, [r0], #1    /* can't use strh (alignment unknown) */
-        strcsb      r1, [r0], #1
-        strmib      r1, [r0], #1
-        subs        r2, r2, r3
-        ldmlsfd     sp!, {r0, r4-r7, lr}   /* return */
-        bxls        lr
-
-        /* align the destination to a cache-line */
-        mov         r12, r1
-        mov         lr, r1
-        mov         r4, r1
-        mov         r5, r1
-        mov         r6, r1
-        mov         r7, r1
-
-        rsb         r3, r0, #0
-        ands        r3, r3, #0x1C
-        beq         3f
-        cmp         r3, r2
-        andhi       r3, r2, #0x1C
-        sub         r2, r2, r3
-
-        /* conditionally writes 0 to 7 words (length in r3) */
-        movs        r3, r3, lsl #28
-        stmcsia     r0!, {r1, lr}
-        stmcsia     r0!, {r1, lr}
-        stmmiia     r0!, {r1, lr}
-        movs        r3, r3, lsl #2
-        strcs       r1, [r0], #4
-
-3:
-        subs        r2, r2, #32
-        mov         r3, r1
-        bmi         2f
-1:      subs        r2, r2, #32
-        stmia       r0!, {r1,r3,r4,r5,r6,r7,r12,lr}
-        bhs         1b
-2:      add         r2, r2, #32
-
-        /* conditionally stores 0 to 31 bytes */
-        movs        r2, r2, lsl #28
-        stmcsia     r0!, {r1,r3,r12,lr}
-        stmmiia     r0!, {r1, lr}
-        movs        r2, r2, lsl #2
-        strcs       r1, [r0], #4
-        strmih      r1, [r0], #2
-        movs        r2, r2, lsl #2
-        strcsb      r1, [r0]
-        ldmfd       sp!, {r0, r4-r7, lr}
-        bx          lr
-        .cfi_endproc
-END(__memset_large_copy)
-
-        .data
-error_string:
-        .string     "memset buffer overflow"

libc/arch-arm/cortex-a9/bionic/strcat.S

@@ -1,548 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-/*
- * Copyright (c) 2013 ARM Ltd
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the company may not be used to endorse or promote
- *    products derived from this software without specific prior written
- *    permission.
- *
- * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <machine/asm.h>
-
-    .syntax unified
-
-    .thumb
-    .thumb_func
-
-    .macro m_push
-    push    {r0, r4, r5, lr}
-    .endm // m_push
-
-    .macro m_ret inst
-    \inst   {r0, r4, r5, pc}
-    .endm // m_ret
-
-    .macro m_scan_byte
-    ldrb    r3, [r0]
-    cbz     r3, strcat_r0_scan_done
-    add     r0, #1
-    .endm // m_scan_byte
-
-    .macro m_copy_byte reg, cmd, label
-    ldrb    \reg, [r1], #1
-    strb    \reg, [r0], #1
-    \cmd    \reg, \label
-    .endm // m_copy_byte
-
-ENTRY(strcat)
-    // Quick check to see if src is empty.
-    ldrb        r2, [r1]
-    pld         [r1, #0]
-    cbnz        r2, strcat_continue
-    bx          lr
-
-strcat_continue:
-    // To speed up really small dst strings, unroll checking the first 4 bytes.
-    m_push
-    m_scan_byte
-    m_scan_byte
-    m_scan_byte
-    m_scan_byte
-
-    ands    r3, r0, #7
-    bne     strcat_align_src
-
-    .p2align 2
-strcat_mainloop:
-    ldmia   r0!, {r2, r3}
-
-    pld     [r0, #64]
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcat_zero_in_first_register
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcat_zero_in_second_register
-    b       strcat_mainloop
-
-strcat_zero_in_first_register:
-    sub     r0, r0, #4
-
-strcat_zero_in_second_register:
-    // Check for zero in byte 0.
-    tst     ip, #0x80
-    it      ne
-    subne   r0, r0, #4
-    bne     strcat_r0_scan_done
-    // Check for zero in byte 1.
-    tst     ip, #0x8000
-    it      ne
-    subne   r0, r0, #3
-    bne     strcat_r0_scan_done
-    // Check for zero in byte 2.
-    tst     ip, #0x800000
-    it      ne
-    subne   r0, r0, #2
-    it      eq
-    // Zero is in byte 3.
-    subeq   r0, r0, #1
-
-strcat_r0_scan_done:
-    // Unroll the first 8 bytes that will be copied.
-    m_copy_byte reg=r2, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r3, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r4, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r5, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r2, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r3, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r4, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r5, cmd=cbnz, label=strcpy_continue
-
-strcpy_finish:
-    m_ret   inst=pop
-
-strcpy_continue:
-    pld     [r1, #0]
-    ands    r3, r0, #7
-    bne     strcpy_align_dst
-
-strcpy_check_src_align:
-    // At this point dst is aligned to a double word, check if src
-    // is also aligned to a double word.
-    ands    r3, r1, #7
-    bne     strcpy_unaligned_copy
-
-    .p2align 2
-strcpy_mainloop:
-    ldmia   r1!, {r2, r3}
-
-    pld     [r1, #64]
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
-
-    stmia   r0!, {r2, r3}
-    b       strcpy_mainloop
-
-strcpy_zero_in_first_register:
-    lsls    lr, ip, #17
-    itt     ne
-    strbne  r2, [r0]
-    m_ret   inst=popne
-    itt     cs
-    strhcs  r2, [r0]
-    m_ret   inst=popcs
-    lsls    ip, ip, #1
-    itt     eq
-    streq   r2, [r0]
-    m_ret   inst=popeq
-    strh    r2, [r0], #2
-    lsr     r3, r2, #16
-    strb    r3, [r0]
-    m_ret   inst=pop
-
-strcpy_zero_in_second_register:
-    lsls    lr, ip, #17
-    ittt    ne
-    stmiane r0!, {r2}
-    strbne  r3, [r0]
-    m_ret   inst=popne
-    ittt    cs
-    strcs   r2, [r0], #4
-    strhcs  r3, [r0]
-    m_ret   inst=popcs
-    lsls    ip, ip, #1
-    itt     eq
-    stmiaeq r0, {r2, r3}
-    m_ret   inst=popeq
-    stmia   r0!, {r2}
-    strh    r3, [r0], #2
-    lsr     r4, r3, #16
-    strb    r4, [r0]
-    m_ret   inst=pop
-
-strcpy_align_dst:
-    // Align to a double word (64 bits).
-    rsb     r3, r3, #8
-    lsls    ip, r3, #31
-    beq     strcpy_align_to_32
-
-    ldrb    r2, [r1], #1
-    strb    r2, [r0], #1
-    cbz     r2, strcpy_complete
-
-strcpy_align_to_32:
-    bcc     strcpy_align_to_64
-
-    ldrb    r4, [r1], #1
-    strb    r4, [r0], #1
-    cmp     r4, #0
-    it      eq
-    m_ret   inst=popeq
-    ldrb    r5, [r1], #1
-    strb    r5, [r0], #1
-    cmp     r5, #0
-    it      eq
-    m_ret   inst=popeq
-
-strcpy_align_to_64:
-    tst     r3, #4
-    beq     strcpy_check_src_align
-    ldr     r2, [r1], #4
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-    stmia   r0!, {r2}
-    b       strcpy_check_src_align
-
-strcpy_complete:
-    m_ret   inst=pop
-
-strcpy_unaligned_copy:
-    // Dst is aligned to a double word, while src is at an unknown alignment.
-    // There are 7 different versions of the unaligned copy code
-    // to prevent overreading the src. The mainloop of every single version
-    // will store 64 bits per loop. The difference is how much of src can
-    // be read without potentially crossing a page boundary.
-    tbb     [pc, r3]
-strcpy_unaligned_branchtable:
-    .byte 0
-    .byte ((strcpy_unalign7 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign6 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign5 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign4 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign3 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign2 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign1 - strcpy_unaligned_branchtable)/2)
-
-    .p2align 2
-    // Can read 7 bytes before possibly crossing a page.
-strcpy_unalign7:
-    ldr     r2, [r1], #4
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-
-    ldrb    r3, [r1]
-    cbz     r3, strcpy_unalign7_copy5bytes
-    ldrb    r4, [r1, #1]
-    cbz     r4, strcpy_unalign7_copy6bytes
-    ldrb    r5, [r1, #2]
-    cbz     r5, strcpy_unalign7_copy7bytes
-
-    ldr     r3, [r1], #4
-    pld     [r1, #64]
-
-    lsrs    ip, r3, #24
-    stmia   r0!, {r2, r3}
-    beq     strcpy_unalign_return
-    b       strcpy_unalign7
-
-strcpy_unalign7_copy5bytes:
-    stmia   r0!, {r2}
-    strb    r3, [r0]
-strcpy_unalign_return:
-    m_ret   inst=pop
-
-strcpy_unalign7_copy6bytes:
-    stmia   r0!, {r2}
-    strb    r3, [r0], #1
-    strb    r4, [r0], #1
-    m_ret   inst=pop
-
-strcpy_unalign7_copy7bytes:
-    stmia   r0!, {r2}
-    strb    r3, [r0], #1
-    strb    r4, [r0], #1
-    strb    r5, [r0], #1
-    m_ret   inst=pop
-
-    .p2align 2
-    // Can read 6 bytes before possibly crossing a page.
-strcpy_unalign6:
-    ldr     r2, [r1], #4
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-
-    ldrb    r4, [r1]
-    cbz     r4, strcpy_unalign_copy5bytes
-    ldrb    r5, [r1, #1]
-    cbz     r5, strcpy_unalign_copy6bytes
-
-    ldr     r3, [r1], #4
-    pld     [r1, #64]
-
-    tst     r3, #0xff0000
-    beq     strcpy_unalign6_copy7bytes
-    lsrs    ip, r3, #24
-    stmia   r0!, {r2, r3}
-    beq     strcpy_unalign_return
-    b       strcpy_unalign6
-
-strcpy_unalign6_copy7bytes:
-    stmia   r0!, {r2}
-    strh    r3, [r0], #2
-    lsr     r3, #16
-    strb    r3, [r0]
-    m_ret   inst=pop
-
-    .p2align 2
-    // Can read 5 bytes before possibly crossing a page.
-strcpy_unalign5:
-    ldr     r2, [r1], #4
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-
-    ldrb    r4, [r1]
-    cbz     r4, strcpy_unalign_copy5bytes
-
-    ldr     r3, [r1], #4
-
-    pld     [r1, #64]
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
-
-    stmia   r0!, {r2, r3}
-    b       strcpy_unalign5
-
-strcpy_unalign_copy5bytes:
-    stmia   r0!, {r2}
-    strb    r4, [r0]
-    m_ret   inst=pop
-
-strcpy_unalign_copy6bytes:
-    stmia   r0!, {r2}
-    strb    r4, [r0], #1
-    strb    r5, [r0]
-    m_ret   inst=pop
-
-    .p2align 2
-    // Can read 4 bytes before possibly crossing a page.
-strcpy_unalign4:
-    ldmia   r1!, {r2}
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-
-    ldmia   r1!, {r3}
-    pld     [r1, #64]
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
-
-    stmia   r0!, {r2, r3}
-    b       strcpy_unalign4
-
-    .p2align 2
-    // Can read 3 bytes before possibly crossing a page.
-strcpy_unalign3:
-    ldrb    r2, [r1]
-    cbz     r2, strcpy_unalign3_copy1byte
-    ldrb    r3, [r1, #1]
-    cbz     r3, strcpy_unalign3_copy2bytes
-    ldrb    r4, [r1, #2]
-    cbz     r4, strcpy_unalign3_copy3bytes
-
-    ldr     r2, [r1], #4
-    ldr     r3, [r1], #4
-
-    pld     [r1, #64]
-
-    lsrs    lr, r2, #24
-    beq     strcpy_unalign_copy4bytes
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
-
-    stmia   r0!, {r2, r3}
-    b       strcpy_unalign3
-
-strcpy_unalign3_copy1byte:
-    strb    r2, [r0]
-    m_ret   inst=pop
-
-strcpy_unalign3_copy2bytes:
-    strb    r2, [r0], #1
-    strb    r3, [r0]
-    m_ret   inst=pop
-
-strcpy_unalign3_copy3bytes:
-    strb    r2, [r0], #1
-    strb    r3, [r0], #1
-    strb    r4, [r0]
-    m_ret   inst=pop
-
-    .p2align 2
-    // Can read 2 bytes before possibly crossing a page.
-strcpy_unalign2:
-    ldrb    r2, [r1]
-    cbz     r2, strcpy_unalign_copy1byte
-    ldrb    r3, [r1, #1]
-    cbz     r3, strcpy_unalign_copy2bytes
-
-    ldr     r2, [r1], #4
-    ldr     r3, [r1], #4
-    pld     [r1, #64]
-
-    tst     r2, #0xff0000
-    beq     strcpy_unalign_copy3bytes
-    lsrs    ip, r2, #24
-    beq     strcpy_unalign_copy4bytes
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
-
-    stmia   r0!, {r2, r3}
-    b       strcpy_unalign2
-
-    .p2align 2
-    // Can read 1 byte before possibly crossing a page.
-strcpy_unalign1:
-    ldrb    r2, [r1]
-    cbz     r2, strcpy_unalign_copy1byte
-
-    ldr     r2, [r1], #4
-    ldr     r3, [r1], #4
-
-    pld     [r1, #64]
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
-
-    stmia   r0!, {r2, r3}
-    b       strcpy_unalign1
-
-strcpy_unalign_copy1byte:
-    strb    r2, [r0]
-    m_ret   inst=pop
-
-strcpy_unalign_copy2bytes:
-    strb    r2, [r0], #1
-    strb    r3, [r0]
-    m_ret   inst=pop
-
-strcpy_unalign_copy3bytes:
-    strh    r2, [r0], #2
-    lsr     r2, #16
-    strb    r2, [r0]
-    m_ret   inst=pop
-
-strcpy_unalign_copy4bytes:
-    stmia   r0, {r2}
-    m_ret   inst=pop
-
-strcat_align_src:
-    // Align to a double word (64 bits).
-    rsb     r3, r3, #8
-    lsls    ip, r3, #31
-    beq     strcat_align_to_32
-    ldrb    r2, [r0], #1
-    cbz     r2, strcat_r0_update
-
-strcat_align_to_32:
-    bcc     strcat_align_to_64
-    ldrb    r2, [r0], #1
-    cbz     r2, strcat_r0_update
-    ldrb    r2, [r0], #1
-    cbz     r2, strcat_r0_update
-
-strcat_align_to_64:
-    tst     r3, #4
-    beq     strcat_mainloop
-    ldr     r3, [r0], #4
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcat_zero_in_second_register
-    b       strcat_mainloop
-
-strcat_r0_update:
-    sub     r0, r0, #1
-    b strcat_r0_scan_done
-END(strcat)

libc/arch-arm/cortex-a9/bionic/strcmp.S

@@ -1,562 +0,0 @@
-/*
- * Copyright (c) 2013 ARM Ltd
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the company may not be used to endorse or promote
- *    products derived from this software without specific prior written
- *    permission.
- *
- * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <machine/cpu-features.h>
-#include <machine/asm.h>
-
-#ifdef __ARMEB__
-#define S2LOMEM lsl
-#define S2LOMEMEQ lsleq
-#define S2HIMEM lsr
-#define MSB 0x000000ff
-#define LSB 0xff000000
-#define BYTE0_OFFSET 24
-#define BYTE1_OFFSET 16
-#define BYTE2_OFFSET 8
-#define BYTE3_OFFSET 0
-#else /* not  __ARMEB__ */
-#define S2LOMEM lsr
-#define S2LOMEMEQ lsreq
-#define S2HIMEM lsl
-#define BYTE0_OFFSET 0
-#define BYTE1_OFFSET 8
-#define BYTE2_OFFSET 16
-#define BYTE3_OFFSET 24
-#define MSB 0xff000000
-#define LSB 0x000000ff
-#endif /* not  __ARMEB__ */
-
-.syntax         unified
-
-#if defined (__thumb__)
-        .thumb
-        .thumb_func
-#endif
-
-ENTRY(strcmp)
-      /* Use LDRD whenever possible.  */
-
-/* The main thing to look out for when comparing large blocks is that
-   the loads do not cross a page boundary when loading past the index
-   of the byte with the first difference or the first string-terminator.
-
-   For example, if the strings are identical and the string-terminator
-   is at index k, byte by byte comparison will not load beyond address
-   s1+k and s2+k; word by word comparison may load up to 3 bytes beyond
-   k; double word - up to 7 bytes.  If the load of these bytes crosses
-   a page boundary, it might cause a memory fault (if the page is not mapped)
-   that would not have happened in byte by byte comparison.
-
-   If an address is (double) word aligned, then a load of a (double) word
-   from that address will not cross a page boundary.
-   Therefore, the algorithm below considers word and double-word alignment
-   of strings separately.  */
-
-/* High-level description of the algorithm.
-
-   * The fast path: if both strings are double-word aligned,
-     use LDRD to load two words from each string in every loop iteration.
-   * If the strings have the same offset from a word boundary,
-     use LDRB to load and compare byte by byte until
-     the first string is aligned to a word boundary (at most 3 bytes).
-     This is optimized for quick return on short unaligned strings.
-   * If the strings have the same offset from a double-word boundary,
-     use LDRD to load two words from each string in every loop iteration, as in the fast path.
-   * If the strings do not have the same offset from a double-word boundary,
-     load a word from the second string before the loop to initialize the queue.
-     Use LDRD to load two words from every string in every loop iteration.
-     Inside the loop, load the second word from the second string only after comparing
-     the first word, using the queued value, to guarantee safety across page boundaries.
-   * If the strings do not have the same offset from a word boundary,
-     use LDR and a shift queue. Order of loads and comparisons matters,
-     similarly to the previous case.
-
-   * Use UADD8 and SEL to compare words, and use REV and CLZ to compute the return value.
-   * The only difference between ARM and Thumb modes is the use of CBZ instruction.
-   * The only difference between big and little endian is the use of REV in little endian
-     to compute the return value, instead of MOV.
-*/
-
-        .macro m_cbz reg label
-#ifdef __thumb2__
-        cbz     \reg, \label
-#else   /* not defined __thumb2__ */
-        cmp     \reg, #0
-        beq     \label
-#endif /* not defined __thumb2__ */
-        .endm /* m_cbz */
-
-        .macro m_cbnz reg label
-#ifdef __thumb2__
-        cbnz    \reg, \label
-#else   /* not defined __thumb2__ */
-        cmp     \reg, #0
-        bne     \label
-#endif /* not defined __thumb2__ */
-        .endm /* m_cbnz */
-
-        .macro  init
-        /* Macro to save temporary registers and prepare magic values.  */
-        subs    sp, sp, #16
-        .cfi_def_cfa_offset 16
-        strd    r4, r5, [sp, #8]
-        .cfi_rel_offset r4, 0
-        .cfi_rel_offset r5, 4
-        strd    r6, r7, [sp]
-        .cfi_rel_offset r6, 8
-        .cfi_rel_offset r7, 12
-        mvn     r6, #0  /* all F */
-        mov     r7, #0  /* all 0 */
-        .endm   /* init */
-
-        .macro  magic_compare_and_branch w1 w2 label
-        /* Macro to compare registers w1 and w2 and conditionally branch to label.  */
-        cmp     \w1, \w2        /* Are w1 and w2 the same?  */
-        magic_find_zero_bytes \w1
-        it      eq
-        cmpeq   ip, #0          /* Is there a zero byte in w1?  */
-        bne     \label
-        .endm /* magic_compare_and_branch */
-
-        .macro  magic_find_zero_bytes w1
-        /* Macro to find all-zero bytes in w1, result is in ip.  */
-#if (defined (__ARM_FEATURE_DSP))
-        uadd8   ip, \w1, r6
-        sel     ip, r7, r6
-#else /* not defined (__ARM_FEATURE_DSP) */
-        /* __ARM_FEATURE_DSP is not defined for some Cortex-M processors.
-        Coincidently, these processors only have Thumb-2 mode, where we can use the
-        the (large) magic constant available directly as an immediate in instructions.
-        Note that we cannot use the magic constant in ARM mode, where we need
-        to create the constant in a register.  */
-        sub     ip, \w1, #0x01010101
-        bic     ip, ip, \w1
-        and     ip, ip, #0x80808080
-#endif /* not defined (__ARM_FEATURE_DSP) */
-        .endm /* magic_find_zero_bytes */
-
-        .macro  setup_return w1 w2
-#ifdef __ARMEB__
-        mov     r1, \w1
-        mov     r2, \w2
-#else /* not  __ARMEB__ */
-        rev     r1, \w1
-        rev     r2, \w2
-#endif /* not  __ARMEB__ */
-        .endm /* setup_return */
-
-        .cfi_startproc
-        pld [r0, #0]
-        pld [r1, #0]
-
-        /* Are both strings double-word aligned?  */
-        orr     ip, r0, r1
-        tst     ip, #7
-        bne     .L_do_align
-
-        /* Fast path.  */
-        .save   {r4-r7}
-        init
-
-.L_doubleword_aligned:
-
-        /* Get here when the strings to compare are double-word aligned.  */
-        /* Compare two words in every iteration.  */
-        .p2align        2
-2:
-        pld [r0, #16]
-        pld [r1, #16]
-
-        /* Load the next double-word from each string.  */
-        ldrd    r2, r3, [r0], #8
-        ldrd    r4, r5, [r1], #8
-
-        magic_compare_and_branch w1=r2, w2=r4, label=.L_return_24
-        magic_compare_and_branch w1=r3, w2=r5, label=.L_return_35
-        b       2b
-
-.L_do_align:
-        /* Is the first string word-aligned?  */
-        ands    ip, r0, #3
-        beq     .L_word_aligned_r0
-
-        /* Fast compare byte by byte until the first string is word-aligned.  */
-        /* The offset of r0 from a word boundary is in ip. Thus, the number of bytes
-        to read until the next word boundary is 4-ip.  */
-        bic     r0, r0, #3
-        ldr     r2, [r0], #4
-        lsls    ip, ip, #31
-        beq     .L_byte2
-        bcs     .L_byte3
-
-.L_byte1:
-        ldrb    ip, [r1], #1
-        uxtb    r3, r2, ror #BYTE1_OFFSET
-        subs    ip, r3, ip
-        bne     .L_fast_return
-        m_cbz   reg=r3, label=.L_fast_return
-
-.L_byte2:
-        ldrb    ip, [r1], #1
-        uxtb    r3, r2, ror #BYTE2_OFFSET
-        subs    ip, r3, ip
-        bne     .L_fast_return
-        m_cbz   reg=r3, label=.L_fast_return
-
-.L_byte3:
-        ldrb    ip, [r1], #1
-        uxtb    r3, r2, ror #BYTE3_OFFSET
-        subs    ip, r3, ip
-        bne     .L_fast_return
-        m_cbnz  reg=r3, label=.L_word_aligned_r0
-
-.L_fast_return:
-        mov     r0, ip
-        bx      lr
-
-.L_word_aligned_r0:
-        init
-        /* The first string is word-aligned.  */
-        /* Is the second string word-aligned?  */
-        ands    ip, r1, #3
-        bne     .L_strcmp_unaligned
-
-.L_word_aligned:
-        /* The strings are word-aligned. */
-        /* Is the first string double-word aligned?  */
-        tst     r0, #4
-        beq     .L_doubleword_aligned_r0
-
-        /* If r0 is not double-word aligned yet, align it by loading
-        and comparing the next word from each string.  */
-        ldr     r2, [r0], #4
-        ldr     r4, [r1], #4
-        magic_compare_and_branch w1=r2 w2=r4 label=.L_return_24
-
-.L_doubleword_aligned_r0:
-        /* Get here when r0 is double-word aligned.  */
-        /* Is r1 doubleword_aligned?  */
-        tst     r1, #4
-        beq     .L_doubleword_aligned
-
-        /* Get here when the strings to compare are word-aligned,
-        r0 is double-word aligned, but r1 is not double-word aligned.  */
-
-        /* Initialize the queue.  */
-        ldr     r5, [r1], #4
-
-        /* Compare two words in every iteration.  */
-        .p2align        2
-3:
-        pld [r0, #16]
-        pld [r1, #16]
-
-        /* Load the next double-word from each string and compare.  */
-        ldrd    r2, r3, [r0], #8
-        magic_compare_and_branch w1=r2 w2=r5 label=.L_return_25
-        ldrd    r4, r5, [r1], #8
-        magic_compare_and_branch w1=r3 w2=r4 label=.L_return_34
-        b       3b
-
-        .macro miscmp_word offsetlo offsethi
-        /* Macro to compare misaligned strings.  */
-        /* r0, r1 are word-aligned, and at least one of the strings
-        is not double-word aligned.  */
-        /* Compare one word in every loop iteration.  */
-        /* OFFSETLO is the original bit-offset of r1 from a word-boundary,
-        OFFSETHI is 32 - OFFSETLO (i.e., offset from the next word).  */
-
-        /* Initialize the shift queue.  */
-        ldr     r5, [r1], #4
-
-        /* Compare one word from each string in every loop iteration.  */
-        .p2align        2
-7:
-        ldr     r3, [r0], #4
-        S2LOMEM r5, r5, #\offsetlo
-        magic_find_zero_bytes w1=r3
-        cmp     r7, ip, S2HIMEM #\offsetlo
-        and     r2, r3, r6, S2LOMEM #\offsetlo
-        it      eq
-        cmpeq   r2, r5
-        bne     .L_return_25
-        ldr     r5, [r1], #4
-        cmp     ip, #0
-        eor r3, r2, r3
-        S2HIMEM r2, r5, #\offsethi
-        it      eq
-        cmpeq   r3, r2
-        bne     .L_return_32
-        b       7b
-        .endm /* miscmp_word */
-
-.L_return_32:
-        setup_return w1=r3, w2=r2
-        b       .L_do_return
-.L_return_34:
-        setup_return w1=r3, w2=r4
-        b       .L_do_return
-.L_return_25:
-        setup_return w1=r2, w2=r5
-        b       .L_do_return
-.L_return_35:
-        setup_return w1=r3, w2=r5
-        b       .L_do_return
-.L_return_24:
-        setup_return w1=r2, w2=r4
-
-.L_do_return:
-
-#ifdef __ARMEB__
-        mov     r0, ip
-#else /* not  __ARMEB__ */
-        rev     r0, ip
-#endif /* not  __ARMEB__ */
-
-        /* Restore temporaries early, before computing the return value.  */
-        ldrd    r6, r7, [sp]
-        ldrd    r4, r5, [sp, #8]
-        adds    sp, sp, #16
-        .cfi_def_cfa_offset 0
-        .cfi_restore r4
-        .cfi_restore r5
-        .cfi_restore r6
-        .cfi_restore r7
-
-        /* There is a zero or a different byte between r1 and r2.  */
-        /* r0 contains a mask of all-zero bytes in r1.  */
-        /* Using r0 and not ip here because cbz requires low register.  */
-        m_cbz   reg=r0, label=.L_compute_return_value
-        clz     r0, r0
-        /* r0 contains the number of bits on the left of the first all-zero byte in r1.  */
-        rsb     r0, r0, #24
-        /* Here, r0 contains the number of bits on the right of the first all-zero byte in r1.  */
-        lsr     r1, r1, r0
-        lsr     r2, r2, r0
-
-.L_compute_return_value:
-        movs    r0, #1
-        cmp     r1, r2
-        /* The return value is computed as follows.
-        If r1>r2 then (C==1 and Z==0) and LS doesn't hold and r0 is #1 at return.
-        If r1<r2 then (C==0 and Z==0) and we execute SBC with carry_in=0,
-        which means r0:=r0-r0-1 and r0 is #-1 at return.
-        If r1=r2 then (C==1 and Z==1) and we execute SBC with carry_in=1,
-        which means r0:=r0-r0 and r0 is #0 at return.
-        (C==0 and Z==1) cannot happen because the carry bit is "not borrow".  */
-        it      ls
-        sbcls   r0, r0, r0
-        bx      lr
-
-    /* The code from the previous version of strcmp.S handles all of the
-     * cases where the first string and seconds string cannot both be
-     * aligned to a word boundary faster than the new algorithm. See
-     * bionic/libc/arch-arm/cortex-a15/bionic/strcmp.S for the unedited
-     * version of the code.
-     */
-.L_strcmp_unaligned:
-	wp1 .req r0
-	wp2 .req r1
-	b1  .req r2
-	w1  .req r4
-	w2  .req r5
-	t1  .req ip
-	@ r3 is scratch
-
-2:
-	mov	b1, #1
-	orr	b1, b1, b1, lsl #8
-	orr	b1, b1, b1, lsl #16
-
-	and	t1, wp2, #3
-	bic	wp2, wp2, #3
-	ldr	w1, [wp1], #4
-	ldr	w2, [wp2], #4
-	cmp	t1, #2
-	beq	2f
-	bhi	3f
-
-	/* Critical inner Loop: Block with 3 bytes initial overlap */
-	.p2align	2
-1:
-	bic	t1, w1, #MSB
-	cmp	t1, w2, S2LOMEM #8
-	sub	r3, w1, b1
-	bic	r3, r3, w1
-	bne	4f
-	ands	r3, r3, b1, lsl #7
-	it	eq
-	ldreq	w2, [wp2], #4
-	bne	5f
-	eor	t1, t1, w1
-	cmp	t1, w2, S2HIMEM #24
-	bne	6f
-	ldr	w1, [wp1], #4
-	b	1b
-4:
-	S2LOMEM	w2, w2, #8
-	b	8f
-
-5:
-#ifdef __ARMEB__
-	/* The syndrome value may contain false ones if the string ends
-	 * with the bytes 0x01 0x00
-	 */
-	tst	w1, #0xff000000
-	itt	ne
-	tstne	w1, #0x00ff0000
-	tstne	w1, #0x0000ff00
-	beq	7f
-#else
-	bics	r3, r3, #0xff000000
-	bne	7f
-#endif
-	ldrb	w2, [wp2]
-	S2LOMEM	t1, w1, #24
-#ifdef __ARMEB__
-	lsl	w2, w2, #24
-#endif
-	b	8f
-
-6:
-	S2LOMEM	t1, w1, #24
-	and	w2, w2, #LSB
-	b	8f
-
-	/* Critical inner Loop: Block with 2 bytes initial overlap */
-	.p2align	2
-2:
-	S2HIMEM	t1, w1, #16
-	sub	r3, w1, b1
-	S2LOMEM	t1, t1, #16
-	bic	r3, r3, w1
-	cmp	t1, w2, S2LOMEM #16
-	bne	4f
-	ands	r3, r3, b1, lsl #7
-	it	eq
-	ldreq	w2, [wp2], #4
-	bne	5f
-	eor	t1, t1, w1
-	cmp	t1, w2, S2HIMEM #16
-	bne	6f
-	ldr	w1, [wp1], #4
-	b	2b
-
-5:
-#ifdef __ARMEB__
-	/* The syndrome value may contain false ones if the string ends
-	 * with the bytes 0x01 0x00
-	 */
-	tst	w1, #0xff000000
-	it	ne
-	tstne	w1, #0x00ff0000
-	beq	7f
-#else
-	lsls	r3, r3, #16
-	bne	7f
-#endif
-	ldrh	w2, [wp2]
-	S2LOMEM	t1, w1, #16
-#ifdef __ARMEB__
-	lsl	w2, w2, #16
-#endif
-	b	8f
-
-6:
-	S2HIMEM	w2, w2, #16
-	S2LOMEM	t1, w1, #16
-4:
-	S2LOMEM	w2, w2, #16
-	b	8f
-
-	/* Critical inner Loop: Block with 1 byte initial overlap */
-	.p2align	2
-3:
-	and	t1, w1, #LSB
-	cmp	t1, w2, S2LOMEM #24
-	sub	r3, w1, b1
-	bic	r3, r3, w1
-	bne	4f
-	ands	r3, r3, b1, lsl #7
-	it	eq
-	ldreq	w2, [wp2], #4
-	bne	5f
-	eor	t1, t1, w1
-	cmp	t1, w2, S2HIMEM #8
-	bne	6f
-	ldr	w1, [wp1], #4
-	b	3b
-4:
-	S2LOMEM	w2, w2, #24
-	b	8f
-5:
-	/* The syndrome value may contain false ones if the string ends
-	 * with the bytes 0x01 0x00
-	 */
-	tst	w1, #LSB
-	beq	7f
-	ldr	w2, [wp2], #4
-6:
-	S2LOMEM	t1, w1, #8
-	bic	w2, w2, #MSB
-	b	8f
-7:
-	mov	r0, #0
-
-    /* Restore registers and stack. */
-    ldrd    r6, r7, [sp]
-    ldrd    r4, r5, [sp, #8]
-    adds    sp, sp, #16
-    .cfi_def_cfa_offset 0
-    .cfi_restore r4
-    .cfi_restore r5
-    .cfi_restore r6
-    .cfi_restore r7
-
-	bx	lr
-
-8:
-	and	r2, t1, #LSB
-	and	r0, w2, #LSB
-	cmp	r0, #1
-	it	cs
-	cmpcs	r0, r2
-	itt	eq
-	S2LOMEMEQ	t1, t1, #8
-	S2LOMEMEQ	w2, w2, #8
-	beq	8b
-	sub	r0, r2, r0
-
-    /* Restore registers and stack. */
-    ldrd    r6, r7, [sp]
-    ldrd    r4, r5, [sp, #8]
-    adds    sp, sp, #16
-
-	bx	lr
-    .cfi_endproc
-END(strcmp)

libc/arch-arm/cortex-a9/bionic/strcpy.S

@@ -1,456 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-/*
- * Copyright (c) 2013 ARM Ltd
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the company may not be used to endorse or promote
- *    products derived from this software without specific prior written
- *    permission.
- *
- * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <machine/asm.h>
-
-    .syntax unified
-
-    .thumb
-    .thumb_func
-
-    .macro m_push
-    push    {r0, r4, r5, lr}
-    .endm // m_push
-
-    .macro m_ret inst
-    \inst   {r0, r4, r5, pc}
-    .endm // m_ret
-
-    .macro m_copy_byte reg, cmd, label
-    ldrb    \reg, [r1], #1
-    strb    \reg, [r0], #1
-    \cmd    \reg, \label
-    .endm // m_copy_byte
-
-ENTRY(strcpy)
-    // Unroll the first 8 bytes that will be copied.
-    m_push
-    m_copy_byte reg=r2, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r3, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r4, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r5, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r2, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r3, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r4, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r5, cmd=cbnz, label=strcpy_continue
-
-strcpy_finish:
-    m_ret   inst=pop
-
-strcpy_continue:
-    pld     [r1, #0]
-    ands    r3, r0, #7
-    bne     strcpy_align_dst
-
-strcpy_check_src_align:
-    // At this point dst is aligned to a double word, check if src
-    // is also aligned to a double word.
-    ands    r3, r1, #7
-    bne     strcpy_unaligned_copy
-
-    .p2align 2
-strcpy_mainloop:
-    ldmia   r1!, {r2, r3}
-
-    pld     [r1, #64]
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
-
-    stmia   r0!, {r2, r3}
-    b       strcpy_mainloop
-
-strcpy_zero_in_first_register:
-    lsls    lr, ip, #17
-    itt     ne
-    strbne  r2, [r0]
-    m_ret   inst=popne
-    itt     cs
-    strhcs  r2, [r0]
-    m_ret   inst=popcs
-    lsls    ip, ip, #1
-    itt     eq
-    streq   r2, [r0]
-    m_ret   inst=popeq
-    strh    r2, [r0], #2
-    lsr     r3, r2, #16
-    strb    r3, [r0]
-    m_ret   inst=pop
-
-strcpy_zero_in_second_register:
-    lsls    lr, ip, #17
-    ittt    ne
-    stmiane r0!, {r2}
-    strbne  r3, [r0]
-    m_ret   inst=popne
-    ittt    cs
-    strcs   r2, [r0], #4
-    strhcs  r3, [r0]
-    m_ret   inst=popcs
-    lsls    ip, ip, #1
-    itt     eq
-    stmiaeq r0, {r2, r3}
-    m_ret   inst=popeq
-    stmia   r0!, {r2}
-    strh    r3, [r0], #2
-    lsr     r4, r3, #16
-    strb    r4, [r0]
-    m_ret   inst=pop
-
-strcpy_align_dst:
-    // Align to a double word (64 bits).
-    rsb     r3, r3, #8
-    lsls    ip, r3, #31
-    beq     strcpy_align_to_32
-
-    ldrb    r2, [r1], #1
-    strb    r2, [r0], #1
-    cbz     r2, strcpy_complete
-
-strcpy_align_to_32:
-    bcc     strcpy_align_to_64
-
-    ldrb    r4, [r1], #1
-    strb    r4, [r0], #1
-    cmp     r4, #0
-    it      eq
-    m_ret   inst=popeq
-    ldrb    r5, [r1], #1
-    strb    r5, [r0], #1
-    cmp     r5, #0
-    it      eq
-    m_ret   inst=popeq
-
-strcpy_align_to_64:
-    tst     r3, #4
-    beq     strcpy_check_src_align
-    ldr     r2, [r1], #4
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-    stmia   r0!, {r2}
-    b       strcpy_check_src_align
-
-strcpy_complete:
-    m_ret   inst=pop
-
-strcpy_unaligned_copy:
-    // Dst is aligned to a double word, while src is at an unknown alignment.
-    // There are 7 different versions of the unaligned copy code
-    // to prevent overreading the src. The mainloop of every single version
-    // will store 64 bits per loop. The difference is how much of src can
-    // be read without potentially crossing a page boundary.
-    tbb     [pc, r3]
-strcpy_unaligned_branchtable:
-    .byte 0
-    .byte ((strcpy_unalign7 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign6 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign5 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign4 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign3 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign2 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign1 - strcpy_unaligned_branchtable)/2)
-
-    .p2align 2
-    // Can read 7 bytes before possibly crossing a page.
-strcpy_unalign7:
-    ldr     r2, [r1], #4
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-
-    ldrb    r3, [r1]
-    cbz     r3, strcpy_unalign7_copy5bytes
-    ldrb    r4, [r1, #1]
-    cbz     r4, strcpy_unalign7_copy6bytes
-    ldrb    r5, [r1, #2]
-    cbz     r5, strcpy_unalign7_copy7bytes
-
-    ldr     r3, [r1], #4
-    pld     [r1, #64]
-
-    lsrs    ip, r3, #24
-    stmia   r0!, {r2, r3}
-    beq     strcpy_unalign_return
-    b       strcpy_unalign7
-
-strcpy_unalign7_copy5bytes:
-    stmia   r0!, {r2}
-    strb    r3, [r0]
-strcpy_unalign_return:
-    m_ret   inst=pop
-
-strcpy_unalign7_copy6bytes:
-    stmia   r0!, {r2}
-    strb    r3, [r0], #1
-    strb    r4, [r0], #1
-    m_ret   inst=pop
-
-strcpy_unalign7_copy7bytes:
-    stmia   r0!, {r2}
-    strb    r3, [r0], #1
-    strb    r4, [r0], #1
-    strb    r5, [r0], #1
-    m_ret   inst=pop
-
-    .p2align 2
-    // Can read 6 bytes before possibly crossing a page.
-strcpy_unalign6:
-    ldr     r2, [r1], #4
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-
-    ldrb    r4, [r1]
-    cbz     r4, strcpy_unalign_copy5bytes
-    ldrb    r5, [r1, #1]
-    cbz     r5, strcpy_unalign_copy6bytes
-
-    ldr     r3, [r1], #4
-    pld     [r1, #64]
-
-    tst     r3, #0xff0000
-    beq     strcpy_unalign6_copy7bytes
-    lsrs    ip, r3, #24
-    stmia   r0!, {r2, r3}
-    beq     strcpy_unalign_return
-    b       strcpy_unalign6
-
-strcpy_unalign6_copy7bytes:
-    stmia   r0!, {r2}
-    strh    r3, [r0], #2
-    lsr     r3, #16
-    strb    r3, [r0]
-    m_ret   inst=pop
-
-    .p2align 2
-    // Can read 5 bytes before possibly crossing a page.
-strcpy_unalign5:
-    ldr     r2, [r1], #4
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-
-    ldrb    r4, [r1]
-    cbz     r4, strcpy_unalign_copy5bytes
-
-    ldr     r3, [r1], #4
-
-    pld     [r1, #64]
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
-
-    stmia   r0!, {r2, r3}
-    b       strcpy_unalign5
-
-strcpy_unalign_copy5bytes:
-    stmia   r0!, {r2}
-    strb    r4, [r0]
-    m_ret   inst=pop
-
-strcpy_unalign_copy6bytes:
-    stmia   r0!, {r2}
-    strb    r4, [r0], #1
-    strb    r5, [r0]
-    m_ret   inst=pop
-
-    .p2align 2
-    // Can read 4 bytes before possibly crossing a page.
-strcpy_unalign4:
-    ldmia   r1!, {r2}
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-
-    ldmia   r1!, {r3}
-    pld     [r1, #64]
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
-
-    stmia   r0!, {r2, r3}
-    b       strcpy_unalign4
-
-    .p2align 2
-    // Can read 3 bytes before possibly crossing a page.
-strcpy_unalign3:
-    ldrb    r2, [r1]
-    cbz     r2, strcpy_unalign3_copy1byte
-    ldrb    r3, [r1, #1]
-    cbz     r3, strcpy_unalign3_copy2bytes
-    ldrb    r4, [r1, #2]
-    cbz     r4, strcpy_unalign3_copy3bytes
-
-    ldr     r2, [r1], #4
-    ldr     r3, [r1], #4
-
-    pld     [r1, #64]
-
-    lsrs    lr, r2, #24
-    beq     strcpy_unalign_copy4bytes
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
-
-    stmia   r0!, {r2, r3}
-    b       strcpy_unalign3
-
-strcpy_unalign3_copy1byte:
-    strb    r2, [r0]
-    m_ret   inst=pop
-
-strcpy_unalign3_copy2bytes:
-    strb    r2, [r0], #1
-    strb    r3, [r0]
-    m_ret   inst=pop
-
-strcpy_unalign3_copy3bytes:
-    strb    r2, [r0], #1
-    strb    r3, [r0], #1
-    strb    r4, [r0]
-    m_ret   inst=pop
-
-    .p2align 2
-    // Can read 2 bytes before possibly crossing a page.
-strcpy_unalign2:
-    ldrb    r2, [r1]
-    cbz     r2, strcpy_unalign_copy1byte
-    ldrb    r3, [r1, #1]
-    cbz     r3, strcpy_unalign_copy2bytes
-
-    ldr     r2, [r1], #4
-    ldr     r3, [r1], #4
-    pld     [r1, #64]
-
-    tst     r2, #0xff0000
-    beq     strcpy_unalign_copy3bytes
-    lsrs    ip, r2, #24
-    beq     strcpy_unalign_copy4bytes
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
-
-    stmia   r0!, {r2, r3}
-    b       strcpy_unalign2
-
-    .p2align 2
-    // Can read 1 byte before possibly crossing a page.
-strcpy_unalign1:
-    ldrb    r2, [r1]
-    cbz     r2, strcpy_unalign_copy1byte
-
-    ldr     r2, [r1], #4
-    ldr     r3, [r1], #4
-
-    pld     [r1, #64]
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
-
-    stmia   r0!, {r2, r3}
-    b       strcpy_unalign1
-
-strcpy_unalign_copy1byte:
-    strb    r2, [r0]
-    m_ret   inst=pop
-
-strcpy_unalign_copy2bytes:
-    strb    r2, [r0], #1
-    strb    r3, [r0]
-    m_ret   inst=pop
-
-strcpy_unalign_copy3bytes:
-    strh    r2, [r0], #2
-    lsr     r2, #16
-    strb    r2, [r0]
-    m_ret   inst=pop
-
-strcpy_unalign_copy4bytes:
-    stmia   r0, {r2}
-    m_ret   inst=pop
-END(strcpy)

libc/arch-arm/cortex-a9/bionic/strlen.S

@@ -1,167 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-/*
- * Copyright (c) 2013 ARM Ltd
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the company may not be used to endorse or promote
- *    products derived from this software without specific prior written
- *    permission.
- *
- * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <machine/asm.h>
-
-    .syntax unified
-
-    .thumb
-    .thumb_func
-
-ENTRY(strlen)
-    pld     [r0, #0]
-    mov     r1, r0
-
-    ands    r3, r0, #7
-    bne     align_src
-
-    .p2align 2
-mainloop:
-    ldmia   r1!, {r2, r3}
-
-    pld     [r1, #64]
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     zero_in_first_register
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     zero_in_second_register
-    b       mainloop
-
-zero_in_first_register:
-    sub     r0, r1, r0
-    // Check for zero in byte 0.
-    lsls    r2, ip, #17
-    beq     check_byte1_reg1
-
-    sub     r0, r0, #8
-    bx      lr
-
-check_byte1_reg1:
-    bcc     check_byte2_reg1
-
-    sub     r0, r0, #7
-    bx      lr
-
-check_byte2_reg1:
-    // Check for zero in byte 2.
-    tst     ip, #0x800000
-    itt     ne
-    subne   r0, r0, #6
-    bxne    lr
-    sub     r0, r0, #5
-    bx      lr
-
-zero_in_second_register:
-    sub     r0, r1, r0
-    // Check for zero in byte 0.
-    lsls    r2, ip, #17
-    beq     check_byte1_reg2
-
-    sub     r0, r0, #4
-    bx      lr
-
-check_byte1_reg2:
-    bcc     check_byte2_reg2
-
-    sub     r0, r0, #3
-    bx      lr
-
-check_byte2_reg2:
-    // Check for zero in byte 2.
-    tst     ip, #0x800000
-    itt     ne
-    subne   r0, r0, #2
-    bxne    lr
-    sub     r0, r0, #1
-    bx      lr
-
-align_src:
-    // Align to a double word (64 bits).
-    rsb     r3, r3, #8
-    lsls    ip, r3, #31
-    beq     align_to_32
-
-    ldrb    r2, [r1], #1
-    cbz     r2, done
-
-align_to_32:
-    bcc     align_to_64
-
-    ldrb    r2, [r1], #1
-    cbz     r2, done
-    ldrb    r2, [r1], #1
-    cbz     r2, done
-
-align_to_64:
-    tst     r3, #4
-    beq     mainloop
-    ldr     r2, [r1], #4
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     zero_in_second_register
-    b       mainloop
-
-done:
-    sub     r0, r1, r0
-    sub     r0, r0, #1
-    bx      lr
-END(strlen)

libc/arch-arm/cortex-a9/cortex-a9.mk

@@ -1,10 +0,0 @@
-$(call libc-add-cpu-variant-src,MEMCPY,arch-arm/cortex-a9/bionic/memcpy.S)
-$(call libc-add-cpu-variant-src,MEMSET,arch-arm/cortex-a9/bionic/memset.S)
-$(call libc-add-cpu-variant-src,STRCAT,arch-arm/cortex-a9/bionic/strcat.S)
-$(call libc-add-cpu-variant-src,STRCMP,arch-arm/cortex-a9/bionic/strcmp.S)
-$(call libc-add-cpu-variant-src,STRCPY,arch-arm/cortex-a9/bionic/strcpy.S)
-$(call libc-add-cpu-variant-src,STRLEN,arch-arm/cortex-a9/bionic/strlen.S)
-$(call libc-add-cpu-variant-src,__STRCAT_CHK,arch-arm/cortex-a9/bionic/__strcat_chk.S)
-$(call libc-add-cpu-variant-src,__STRCPY_CHK,arch-arm/cortex-a9/bionic/__strcpy_chk.S)
-
-include bionic/libc/arch-arm/generic/generic.mk

libc/arch-arm/generic/bionic/memcpy.S

@@ -1,404 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <machine/cpu-features.h>
-#include <machine/asm.h>
-#include "libc_events.h"
-
-        /*
-         * Optimized memcpy() for ARM.
-         *
-         * note that memcpy() always returns the destination pointer,
-         * so we have to preserve R0.
-         */
-
-ENTRY(__memcpy_chk)
-        cmp         r2, r3
-        bgt         fortify_check_failed
-
-        // Fall through to memcpy...
-END(__memcpy_chk)
-
-ENTRY(memcpy)
-        /* The stack must always be 64-bits aligned to be compliant with the
-         * ARM ABI. Since we have to save R0, we might as well save R4
-         * which we can use for better pipelining of the reads below
-         */
-        .save       {r0, r4, lr}
-        stmfd       sp!, {r0, r4, lr}
-        /* Making room for r5-r11 which will be spilled later */
-        .pad        #28
-        sub         sp, sp, #28
-
-        // preload the destination because we'll align it to a cache line
-        // with small writes. Also start the source "pump".
-        PLD         (r0, #0)
-        PLD         (r1, #0)
-        PLD         (r1, #32)
-
-        /* it simplifies things to take care of len<4 early */
-        cmp         r2, #4
-        blo         copy_last_3_and_return
-
-        /* compute the offset to align the source
-         * offset = (4-(src&3))&3 = -src & 3
-         */
-        rsb         r3, r1, #0
-        ands        r3, r3, #3
-        beq         src_aligned
-
-        /* align source to 32 bits. We need to insert 2 instructions between
-         * a ldr[b|h] and str[b|h] because byte and half-word instructions
-         * stall 2 cycles.
-         */
-        movs        r12, r3, lsl #31
-        sub         r2, r2, r3      /* we know that r3 <= r2 because r2 >= 4 */
-        ldrmib      r3, [r1], #1
-        ldrcsb      r4, [r1], #1
-        ldrcsb      r12,[r1], #1
-        strmib      r3, [r0], #1
-        strcsb      r4, [r0], #1
-        strcsb      r12,[r0], #1
-
-src_aligned:
-
-        /* see if src and dst are aligned together (congruent) */
-        eor         r12, r0, r1
-        tst         r12, #3
-        bne         non_congruent
-
-        /* Use post-incriment mode for stm to spill r5-r11 to reserved stack
-         * frame. Don't update sp.
-         */
-        stmea       sp, {r5-r11}
-
-        /* align the destination to a cache-line */
-        rsb         r3, r0, #0
-        ands        r3, r3, #0x1C
-        beq         congruent_aligned32
-        cmp         r3, r2
-        andhi       r3, r2, #0x1C
-
-        /* conditionally copies 0 to 7 words (length in r3) */
-        movs        r12, r3, lsl #28
-        ldmcsia     r1!, {r4, r5, r6, r7}   /* 16 bytes */
-        ldmmiia     r1!, {r8, r9}           /*  8 bytes */
-        stmcsia     r0!, {r4, r5, r6, r7}
-        stmmiia     r0!, {r8, r9}
-        tst         r3, #0x4
-        ldrne       r10,[r1], #4            /*  4 bytes */
-        strne       r10,[r0], #4
-        sub         r2, r2, r3
-
-congruent_aligned32:
-        /*
-         * here source is aligned to 32 bytes.
-         */
-
-cached_aligned32:
-        subs        r2, r2, #32
-        blo         less_than_32_left
-
-        /*
-         * We preload a cache-line up to 64 bytes ahead. On the 926, this will
-         * stall only until the requested world is fetched, but the linefill
-         * continues in the the background.
-         * While the linefill is going, we write our previous cache-line
-         * into the write-buffer (which should have some free space).
-         * When the linefill is done, the writebuffer will
-         * start dumping its content into memory
-         *
-         * While all this is going, we then load a full cache line into
-         * 8 registers, this cache line should be in the cache by now
-         * (or partly in the cache).
-         *
-         * This code should work well regardless of the source/dest alignment.
-         *
-         */
-
-        // Align the preload register to a cache-line because the cpu does
-        // "critical word first" (the first word requested is loaded first).
-        bic         r12, r1, #0x1F
-        add         r12, r12, #64
-
-1:      ldmia       r1!, { r4-r11 }
-        PLD         (r12, #64)
-        subs        r2, r2, #32
-
-        // NOTE: if r12 is more than 64 ahead of r1, the following ldrhi
-        // for ARM9 preload will not be safely guarded by the preceding subs.
-        // When it is safely guarded the only possibility to have SIGSEGV here
-        // is because the caller overstates the length.
-        ldrhi       r3, [r12], #32      /* cheap ARM9 preload */
-        stmia       r0!, { r4-r11 }
-        bhs         1b
-
-        add         r2, r2, #32
-
-
-
-
-less_than_32_left:
-        /*
-         * less than 32 bytes left at this point (length in r2)
-         */
-
-        /* skip all this if there is nothing to do, which should
-         * be a common case (if not executed the code below takes
-         * about 16 cycles)
-         */
-        tst         r2, #0x1F
-        beq         1f
-
-        /* conditionnaly copies 0 to 31 bytes */
-        movs        r12, r2, lsl #28
-        ldmcsia     r1!, {r4, r5, r6, r7}   /* 16 bytes */
-        ldmmiia     r1!, {r8, r9}           /*  8 bytes */
-        stmcsia     r0!, {r4, r5, r6, r7}
-        stmmiia     r0!, {r8, r9}
-        movs        r12, r2, lsl #30
-        ldrcs       r3, [r1], #4            /*  4 bytes */
-        ldrmih      r4, [r1], #2            /*  2 bytes */
-        strcs       r3, [r0], #4
-        strmih      r4, [r0], #2
-        tst         r2, #0x1
-        ldrneb      r3, [r1]                /*  last byte  */
-        strneb      r3, [r0]
-
-        /* we're done! restore everything and return */
-1:      ldmfd       sp!, {r5-r11}
-        ldmfd       sp!, {r0, r4, lr}
-        bx          lr
-
-        /********************************************************************/
-
-non_congruent:
-        /*
-         * here source is aligned to 4 bytes
-         * but destination is not.
-         *
-         * in the code below r2 is the number of bytes read
-         * (the number of bytes written is always smaller, because we have
-         * partial words in the shift queue)
-         */
-        cmp         r2, #4
-        blo         copy_last_3_and_return
-
-        /* Use post-incriment mode for stm to spill r5-r11 to reserved stack
-         * frame. Don't update sp.
-         */
-        stmea       sp, {r5-r11}
-
-        /* compute shifts needed to align src to dest */
-        rsb         r5, r0, #0
-        and         r5, r5, #3          /* r5 = # bytes in partial words */
-        mov         r12, r5, lsl #3     /* r12 = right */
-        rsb         lr, r12, #32        /* lr = left  */
-
-        /* read the first word */
-        ldr         r3, [r1], #4
-        sub         r2, r2, #4
-
-        /* write a partial word (0 to 3 bytes), such that destination
-         * becomes aligned to 32 bits (r5 = nb of words to copy for alignment)
-         */
-        movs        r5, r5, lsl #31
-        strmib      r3, [r0], #1
-        movmi       r3, r3, lsr #8
-        strcsb      r3, [r0], #1
-        movcs       r3, r3, lsr #8
-        strcsb      r3, [r0], #1
-        movcs       r3, r3, lsr #8
-
-        cmp         r2, #4
-        blo         partial_word_tail
-
-        /* Align destination to 32 bytes (cache line boundary) */
-1:      tst         r0, #0x1c
-        beq         2f
-        ldr         r5, [r1], #4
-        sub         r2, r2, #4
-        orr         r4, r3, r5,     lsl lr
-        mov         r3, r5,         lsr r12
-        str         r4, [r0], #4
-        cmp         r2, #4
-        bhs         1b
-        blo         partial_word_tail
-
-        /* copy 32 bytes at a time */
-2:      subs        r2, r2, #32
-        blo         less_than_thirtytwo
-
-        /* Use immediate mode for the shifts, because there is an extra cycle
-         * for register shifts, which could account for up to 50% of
-         * performance hit.
-         */
-
-        cmp         r12, #24
-        beq         loop24
-        cmp         r12, #8
-        beq         loop8
-
-loop16:
-        ldr         r12, [r1], #4
-1:      mov         r4, r12
-        ldmia       r1!, {   r5,r6,r7,  r8,r9,r10,r11}
-        PLD         (r1, #64)
-        subs        r2, r2, #32
-        ldrhs       r12, [r1], #4
-        orr         r3, r3, r4,     lsl #16
-        mov         r4, r4,         lsr #16
-        orr         r4, r4, r5,     lsl #16
-        mov         r5, r5,         lsr #16
-        orr         r5, r5, r6,     lsl #16
-        mov         r6, r6,         lsr #16
-        orr         r6, r6, r7,     lsl #16
-        mov         r7, r7,         lsr #16
-        orr         r7, r7, r8,     lsl #16
-        mov         r8, r8,         lsr #16
-        orr         r8, r8, r9,     lsl #16
-        mov         r9, r9,         lsr #16
-        orr         r9, r9, r10,    lsl #16
-        mov         r10, r10,       lsr #16
-        orr         r10, r10, r11,  lsl #16
-        stmia       r0!, {r3,r4,r5,r6, r7,r8,r9,r10}
-        mov         r3, r11,        lsr #16
-        bhs         1b
-        b           less_than_thirtytwo
-
-loop8:
-        ldr         r12, [r1], #4
-1:      mov         r4, r12
-        ldmia       r1!, {   r5,r6,r7,  r8,r9,r10,r11}
-        PLD         (r1, #64)
-        subs        r2, r2, #32
-        ldrhs       r12, [r1], #4
-        orr         r3, r3, r4,     lsl #24
-        mov         r4, r4,         lsr #8
-        orr         r4, r4, r5,     lsl #24
-        mov         r5, r5,         lsr #8
-        orr         r5, r5, r6,     lsl #24
-        mov         r6, r6,         lsr #8
-        orr         r6, r6, r7,     lsl #24
-        mov         r7, r7,         lsr #8
-        orr         r7, r7, r8,     lsl #24
-        mov         r8, r8,         lsr #8
-        orr         r8, r8, r9,     lsl #24
-        mov         r9, r9,         lsr #8
-        orr         r9, r9, r10,    lsl #24
-        mov         r10, r10,       lsr #8
-        orr         r10, r10, r11,  lsl #24
-        stmia       r0!, {r3,r4,r5,r6, r7,r8,r9,r10}
-        mov         r3, r11,        lsr #8
-        bhs         1b
-        b           less_than_thirtytwo
-
-loop24:
-        ldr         r12, [r1], #4
-1:      mov         r4, r12
-        ldmia       r1!, {   r5,r6,r7,  r8,r9,r10,r11}
-        PLD         (r1, #64)
-        subs        r2, r2, #32
-        ldrhs       r12, [r1], #4
-        orr         r3, r3, r4,     lsl #8
-        mov         r4, r4,         lsr #24
-        orr         r4, r4, r5,     lsl #8
-        mov         r5, r5,         lsr #24
-        orr         r5, r5, r6,     lsl #8
-        mov         r6, r6,         lsr #24
-        orr         r6, r6, r7,     lsl #8
-        mov         r7, r7,         lsr #24
-        orr         r7, r7, r8,     lsl #8
-        mov         r8, r8,         lsr #24
-        orr         r8, r8, r9,     lsl #8
-        mov         r9, r9,         lsr #24
-        orr         r9, r9, r10,    lsl #8
-        mov         r10, r10,       lsr #24
-        orr         r10, r10, r11,  lsl #8
-        stmia       r0!, {r3,r4,r5,r6, r7,r8,r9,r10}
-        mov         r3, r11,        lsr #24
-        bhs         1b
-
-
-less_than_thirtytwo:
-        /* copy the last 0 to 31 bytes of the source */
-        rsb         r12, lr, #32        /* we corrupted r12, recompute it  */
-        add         r2, r2, #32
-        cmp         r2, #4
-        blo         partial_word_tail
-
-1:      ldr         r5, [r1], #4
-        sub         r2, r2, #4
-        orr         r4, r3, r5,     lsl lr
-        mov         r3, r5,         lsr r12
-        str         r4, [r0], #4
-        cmp         r2, #4
-        bhs         1b
-
-partial_word_tail:
-        /* we have a partial word in the input buffer */
-        movs        r5, lr, lsl #(31-3)
-        strmib      r3, [r0], #1
-        movmi       r3, r3, lsr #8
-        strcsb      r3, [r0], #1
-        movcs       r3, r3, lsr #8
-        strcsb      r3, [r0], #1
-
-        /* Refill spilled registers from the stack. Don't update sp. */
-        ldmfd       sp, {r5-r11}
-
-copy_last_3_and_return:
-        movs        r2, r2, lsl #31 /* copy remaining 0, 1, 2 or 3 bytes */
-        ldrmib      r2, [r1], #1
-        ldrcsb      r3, [r1], #1
-        ldrcsb      r12,[r1]
-        strmib      r2, [r0], #1
-        strcsb      r3, [r0], #1
-        strcsb      r12,[r0]
-
-        /* we're done! restore sp and spilled registers and return */
-        add         sp,  sp, #28
-        ldmfd       sp!, {r0, r4, lr}
-        bx          lr
-
-        // Only reached when the __memcpy_chk check fails.
-fortify_check_failed:
-        ldr     r0, error_message
-        ldr     r1, error_code
-1:
-        add     r0, pc
-        bl      __fortify_chk_fail
-error_code:
-        .word   BIONIC_EVENT_MEMCPY_BUFFER_OVERFLOW
-error_message:
-        .word   error_string-(1b+8)
-END(memcpy)
-
-        .data
-error_string:
-        .string     "memcpy buffer overflow"

libc/arch-arm/generic/bionic/memset.S

@@ -1,133 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <machine/asm.h>
-#include "libc_events.h"
-
-        /*
-         * Optimized memset() for ARM.
-         *
-         * memset() returns its first argument.
-         */
-
-ENTRY(__memset_chk)
-        cmp         r2, r3
-        bls         done
-
-        ldr         r0, error_message
-        ldr         r1, error_code
-1:
-        add         r0, pc
-        bl          __fortify_chk_fail
-error_code:
-        .word       BIONIC_EVENT_MEMSET_BUFFER_OVERFLOW
-error_message:
-        .word       error_string-(1b+8)
-
-END(__memset_chk)
-
-ENTRY(bzero)
-        mov     r2, r1
-        mov     r1, #0
-
-done:
-        // Fall through to memset...
-END(bzero)
-
-ENTRY(memset)
-        /* compute the offset to align the destination
-         * offset = (4-(src&3))&3 = -src & 3
-         */
-        .save       {r0, r4-r7, lr}
-        stmfd       sp!, {r0, r4-r7, lr}
-        rsb         r3, r0, #0
-        ands        r3, r3, #3
-        cmp         r3, r2
-        movhi       r3, r2
-
-        /* splat r1 */
-        mov         r1, r1, lsl #24
-        orr         r1, r1, r1, lsr #8
-        orr         r1, r1, r1, lsr #16
-
-        movs        r12, r3, lsl #31
-        strcsb      r1, [r0], #1    /* can't use strh (alignment unknown) */
-        strcsb      r1, [r0], #1
-        strmib      r1, [r0], #1
-        subs        r2, r2, r3
-        ldmlsfd     sp!, {r0, r4-r7, lr}    /* return */
-        bxls        lr
-
-        /* align the destination to a cache-line */
-        mov         r12, r1
-        mov         lr, r1
-        mov         r4, r1
-        mov         r5, r1
-        mov         r6, r1
-        mov         r7, r1
-
-        rsb         r3, r0, #0
-        ands        r3, r3, #0x1C
-        beq         3f
-        cmp         r3, r2
-        andhi       r3, r2, #0x1C
-        sub         r2, r2, r3
-
-        /* conditionally writes 0 to 7 words (length in r3) */
-        movs        r3, r3, lsl #28
-        stmcsia     r0!, {r1, lr}
-        stmcsia     r0!, {r1, lr}
-        stmmiia     r0!, {r1, lr}
-        movs        r3, r3, lsl #2
-        strcs       r1, [r0], #4
-
-3:
-        subs        r2, r2, #32
-        mov         r3, r1
-        bmi         2f
-1:      subs        r2, r2, #32
-        stmia       r0!, {r1,r3,r4,r5,r6,r7,r12,lr}
-        bhs         1b
-2:      add         r2, r2, #32
-
-        /* conditionally stores 0 to 31 bytes */
-        movs        r2, r2, lsl #28
-        stmcsia     r0!, {r1,r3,r12,lr}
-        stmmiia     r0!, {r1, lr}
-        movs        r2, r2, lsl #2
-        strcs       r1, [r0], #4
-        strmih      r1, [r0], #2
-        movs        r2, r2, lsl #2
-        strcsb      r1, [r0]
-        ldmfd       sp!, {r0, r4-r7, lr}
-        bx          lr
-END(memset)
-
-        .data
-error_string:
-        .string     "memset buffer overflow"

libc/arch-arm/generic/bionic/strcmp.S

@@ -1,317 +0,0 @@
-/*
- * Copyright (c) 2011 The Android Open Source Project
- * Copyright (c) 2008 ARM Ltd
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the company may not be used to endorse or promote
- *    products derived from this software without specific prior written
- *    permission.
- *
- * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <machine/cpu-features.h>
-#include <machine/asm.h>
-
-	.text
-
-#ifdef __ARMEB__
-#define SHFT2LSB lsl
-#define SHFT2LSBEQ lsleq
-#define SHFT2MSB lsr
-#define SHFT2MSBEQ lsreq
-#define MSB 0x000000ff
-#define LSB 0xff000000
-#else
-#define SHFT2LSB lsr
-#define SHFT2LSBEQ lsreq
-#define SHFT2MSB lsl
-#define SHFT2MSBEQ lsleq
-#define MSB 0xff000000
-#define LSB 0x000000ff
-#endif
-
-#define magic1(REG) REG
-#define magic2(REG) REG, lsl #7
-
-ENTRY(strcmp)
-	PLD(r0, #0)
-	PLD(r1, #0)
-	eor	r2, r0, r1
-	tst	r2, #3
-
-	/* Strings not at same byte offset from a word boundary.  */
-	bne	.Lstrcmp_unaligned
-	ands	r2, r0, #3
-	bic	r0, r0, #3
-	bic	r1, r1, #3
-	ldr	ip, [r0], #4
-	it	eq
-	ldreq	r3, [r1], #4
-	beq	1f
-
-	/* Although s1 and s2 have identical initial alignment, they are
-	 * not currently word aligned.  Rather than comparing bytes,
-	 * make sure that any bytes fetched from before the addressed
-	 * bytes are forced to 0xff.  Then they will always compare
-	 * equal.
-	 */
-	eor	r2, r2, #3
-	lsl	r2, r2, #3
-	mvn	r3, #MSB
-	SHFT2LSB	r2, r3, r2
-	ldr	r3, [r1], #4
-	orr	ip, ip, r2
-	orr	r3, r3, r2
-1:
-	/* Load the 'magic' constant 0x01010101. */
-	str	r4, [sp, #-4]!
-	mov	r4, #1
-	orr	r4, r4, r4, lsl #8
-	orr	r4, r4, r4, lsl #16
-	.p2align	2
-4:
-	PLD(r0, #8)
-	PLD(r1, #8)
-	sub	r2, ip, magic1(r4)
-	cmp	ip, r3
-	itttt	eq
-
-	/* check for any zero bytes in first word */
-	biceq	r2, r2, ip
-	tsteq	r2, magic2(r4)
-	ldreq	ip, [r0], #4
-	ldreq	r3, [r1], #4
-	beq	4b
-2:
-	/* There's a zero or a different byte in the word */
-	SHFT2MSB	r0, ip, #24
-	SHFT2LSB	ip, ip, #8
-	cmp	r0, #1
-	it	cs
-	cmpcs	r0, r3, SHFT2MSB #24
-	it	eq
-	SHFT2LSBEQ r3, r3, #8
-	beq	2b
-	/* On a big-endian machine, r0 contains the desired byte in bits
-	 * 0-7; on a little-endian machine they are in bits 24-31.  In
-	 * both cases the other bits in r0 are all zero.  For r3 the
-	 * interesting byte is at the other end of the word, but the
-	 * other bits are not necessarily zero.  We need a signed result
-	 * representing the differnece in the unsigned bytes, so for the
-	 * little-endian case we can't just shift the interesting bits up.
-	 */
-#ifdef __ARMEB__
-	sub	r0, r0, r3, lsr #24
-#else
-	and	r3, r3, #255
-	/* No RSB instruction in Thumb2 */
-#ifdef __thumb2__
-	lsr	r0, r0, #24
-	sub	r0, r0, r3
-#else
-	rsb	r0, r3, r0, lsr #24
-#endif
-#endif
-	ldr	r4, [sp], #4
-	bx	lr
-
-.Lstrcmp_unaligned:
-	wp1 .req r0
-	wp2 .req r1
-	b1  .req r2
-	w1  .req r4
-	w2  .req r5
-	t1  .req ip
-	@ r3 is scratch
-
-	/* First of all, compare bytes until wp1(sp1) is word-aligned. */
-1:
-	tst	wp1, #3
-	beq	2f
-	ldrb	r2, [wp1], #1
-	ldrb	r3, [wp2], #1
-	cmp	r2, #1
-	it	cs
-	cmpcs	r2, r3
-	beq	1b
-	sub	r0, r2, r3
-	bx	lr
-
-2:
-	str	r5, [sp, #-4]!
-	str	r4, [sp, #-4]!
-	mov	b1, #1
-	orr	b1, b1, b1, lsl #8
-	orr	b1, b1, b1, lsl #16
-
-	and	t1, wp2, #3
-	bic	wp2, wp2, #3
-	ldr	w1, [wp1], #4
-	ldr	w2, [wp2], #4
-	cmp	t1, #2
-	beq	2f
-	bhi	3f
-
-	/* Critical inner Loop: Block with 3 bytes initial overlap */
-	.p2align	2
-1:
-	bic	t1, w1, #MSB
-	cmp	t1, w2, SHFT2LSB #8
-	sub	r3, w1, b1
-	bic	r3, r3, w1
-	bne	4f
-	ands	r3, r3, b1, lsl #7
-	it	eq
-	ldreq	w2, [wp2], #4
-	bne	5f
-	eor	t1, t1, w1
-	cmp	t1, w2, SHFT2MSB #24
-	bne	6f
-	ldr	w1, [wp1], #4
-	b	1b
-4:
-	SHFT2LSB	w2, w2, #8
-	b	8f
-
-5:
-#ifdef __ARMEB__
-	/* The syndrome value may contain false ones if the string ends
-	 * with the bytes 0x01 0x00
-	 */
-	tst	w1, #0xff000000
-	itt	ne
-	tstne	w1, #0x00ff0000
-	tstne	w1, #0x0000ff00
-	beq	7f
-#else
-	bics	r3, r3, #0xff000000
-	bne	7f
-#endif
-	ldrb	w2, [wp2]
-	SHFT2LSB	t1, w1, #24
-#ifdef __ARMEB__
-	lsl	w2, w2, #24
-#endif
-	b	8f
-
-6:
-	SHFT2LSB	t1, w1, #24
-	and	w2, w2, #LSB
-	b	8f
-
-	/* Critical inner Loop: Block with 2 bytes initial overlap */
-	.p2align	2
-2:
-	SHFT2MSB	t1, w1, #16
-	sub	r3, w1, b1
-	SHFT2LSB	t1, t1, #16
-	bic	r3, r3, w1
-	cmp	t1, w2, SHFT2LSB #16
-	bne	4f
-	ands	r3, r3, b1, lsl #7
-	it	eq
-	ldreq	w2, [wp2], #4
-	bne	5f
-	eor	t1, t1, w1
-	cmp	t1, w2, SHFT2MSB #16
-	bne	6f
-	ldr	w1, [wp1], #4
-	b	2b
-
-5:
-#ifdef __ARMEB__
-	/* The syndrome value may contain false ones if the string ends
-	 * with the bytes 0x01 0x00
-	 */
-	tst	w1, #0xff000000
-	it	ne
-	tstne	w1, #0x00ff0000
-	beq	7f
-#else
-	lsls	r3, r3, #16
-	bne	7f
-#endif
-	ldrh	w2, [wp2]
-	SHFT2LSB	t1, w1, #16
-#ifdef __ARMEB__
-	lsl	w2, w2, #16
-#endif
-	b	8f
-
-6:
-	SHFT2MSB	w2, w2, #16
-	SHFT2LSB	t1, w1, #16
-4:
-	SHFT2LSB	w2, w2, #16
-	b	8f
-
-	/* Critical inner Loop: Block with 1 byte initial overlap */
-	.p2align	2
-3:
-	and	t1, w1, #LSB
-	cmp	t1, w2, SHFT2LSB #24
-	sub	r3, w1, b1
-	bic	r3, r3, w1
-	bne	4f
-	ands	r3, r3, b1, lsl #7
-	it	eq
-	ldreq	w2, [wp2], #4
-	bne	5f
-	eor	t1, t1, w1
-	cmp	t1, w2, SHFT2MSB #8
-	bne	6f
-	ldr	w1, [wp1], #4
-	b	3b
-4:
-	SHFT2LSB	w2, w2, #24
-	b	8f
-5:
-	/* The syndrome value may contain false ones if the string ends
-	 * with the bytes 0x01 0x00
-	 */
-	tst	w1, #LSB
-	beq	7f
-	ldr	w2, [wp2], #4
-6:
-	SHFT2LSB	t1, w1, #8
-	bic	w2, w2, #MSB
-	b	8f
-7:
-	mov	r0, #0
-	ldr	r4, [sp], #4
-	ldr	r5, [sp], #4
-	bx	lr
-
-8:
-	and	r2, t1, #LSB
-	and	r0, w2, #LSB
-	cmp	r0, #1
-	it	cs
-	cmpcs	r0, r2
-	itt	eq
-	SHFT2LSBEQ	t1, t1, #8
-	SHFT2LSBEQ	w2, w2, #8
-	beq	8b
-	sub	r0, r2, r0
-	ldr	r4, [sp], #4
-	ldr	r5, [sp], #4
-	bx	lr
-END(strcmp)

libc/arch-arm/generic/bionic/strcpy.S

@@ -1,133 +0,0 @@
-/*
- * Copyright (C) 2010 The Android Open Source Project
- * Copyright (c) 2008 ARM Ltd
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the company may not be used to endorse or promote
- *    products derived from this software without specific prior written
- *    permission.
- *
- * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * Android adaptation and tweak by Jim Huang <jserv@0xlab.org>.
- */
-
-#include <machine/cpu-features.h>
-#include <machine/asm.h>
-
-ENTRY(strcpy)
-	PLD(r1, #0)
-	eor	r2, r0, r1
-	mov	ip, r0
-	tst	r2, #3
-	bne	4f
-	tst	r1, #3
-	bne	3f
-5:
-	str	r5, [sp, #-4]!
-	mov	r5, #0x01
-	orr	r5, r5, r5, lsl #8
-	orr	r5, r5, r5, lsl #16
-
-	str	r4, [sp, #-4]!
-	tst	r1, #4
-	ldr	r3, [r1], #4
-	beq	2f
-	sub	r2, r3, r5
-	bics	r2, r2, r3
-	tst	r2, r5, lsl #7
-	itt	eq
-	streq	r3, [ip], #4
-	ldreq	r3, [r1], #4
-	bne	1f
-       /* Inner loop.  We now know that r1 is 64-bit aligned, so we
-	  can safely fetch up to two words.  This allows us to avoid
-	  load stalls.  */
-	.p2align 2
-2:
-	PLD(r1, #8)
-	ldr	r4, [r1], #4
-	sub	r2, r3, r5
-	bics	r2, r2, r3
-	tst	r2, r5, lsl #7
-	sub	r2, r4, r5
-	bne	1f
-	str	r3, [ip], #4
-	bics	r2, r2, r4
-	tst	r2, r5, lsl #7
-	itt	eq
-	ldreq	r3, [r1], #4
-	streq	r4, [ip], #4
-	beq	2b
-	mov	r3, r4
-1:
-#ifdef __ARMEB__
-	rors	r3, r3, #24
-#endif
-	strb	r3, [ip], #1
-	tst	r3, #0xff
-#ifdef __ARMEL__
-	ror	r3, r3, #8
-#endif
-	bne	1b
-	ldr	r4, [sp], #4
-	ldr	r5, [sp], #4
-	bx	lr
-
-       /* Strings have the same offset from word alignment, but it's
-	  not zero.  */
-3:
-	tst	r1, #1
-	beq	1f
-	ldrb	r2, [r1], #1
-	strb	r2, [ip], #1
-	cmp	r2, #0
-	it	eq
-	bxeq	lr
-1:
-	tst	r1, #2
-	beq	5b
-	ldrh	r2, [r1], #2
-#ifdef __ARMEB__
-	tst	r2, #0xff00
-	iteet	ne
-	strneh	r2, [ip], #2
-	lsreq	r2, r2, #8
-	streqb	r2, [ip]
-	tstne	r2, #0xff
-#else
-	tst	r2, #0xff
-	itet	ne
-	strneh	r2, [ip], #2
-	streqb	r2, [ip]
-	tstne	r2, #0xff00
-#endif
-	bne	5b
-	bx	lr
-
-       /* src and dst do not have a common word-alignement.  Fall back to
-	  byte copying.  */
-4:
-	ldrb	r2, [r1], #1
-	strb	r2, [ip], #1
-	cmp	r2, #0
-	bne	4b
-	bx	lr
-END(strcpy)

libc/arch-arm/generic/generic.mk

@@ -1,8 +0,0 @@
-$(call libc-add-cpu-variant-src,MEMCPY,arch-arm/generic/bionic/memcpy.S)
-$(call libc-add-cpu-variant-src,MEMSET,arch-arm/generic/bionic/memset.S)
-$(call libc-add-cpu-variant-src,STRCAT,string/strcat.c)
-$(call libc-add-cpu-variant-src,STRCMP,arch-arm/generic/bionic/strcmp.S)
-$(call libc-add-cpu-variant-src,STRCPY,arch-arm/generic/bionic/strcpy.S)
-$(call libc-add-cpu-variant-src,STRLEN,arch-arm/generic/bionic/strlen.c)
-$(call libc-add-cpu-variant-src,__STRCAT_CHK,bionic/__strcat_chk.cpp)
-$(call libc-add-cpu-variant-src,__STRCPY_CHK,bionic/__strcpy_chk.cpp)

libc/arch-arm/include/endian.h

@@ -0,0 +1,10 @@
+/*	$OpenBSD: endian.h,v 1.3 2005/12/13 00:35:23 millert Exp $	*/
+
+#ifdef __ARMEB__
+#define _BYTE_ORDER _BIG_ENDIAN
+#else
+#define _BYTE_ORDER _LITTLE_ENDIAN
+#endif
+#define	__STRICT_ALIGNMENT
+#include <sys/types.h>
+#include <sys/endian.h>

libc/arch-arm/include/machine/_types.h

@@ -35,6 +35,17 @@
 #ifndef _ARM__TYPES_H_
 #define _ARM__TYPES_H_
 
+
+#if !defined(__ARM_EABI__)
+/* the kernel defines size_t as unsigned int, but g++ wants it to be unsigned long */
+#define _SIZE_T
+#define _SSIZE_T
+#define _PTRDIFF_T
+typedef unsigned long  size_t;
+typedef long           ssize_t;
+typedef long           ptrdiff_t;
+#endif
+
 /* 7.18.1.1 Exact-width integer types */
 typedef	__signed char		__int8_t;
 typedef	unsigned char		__uint8_t;
@@ -87,8 +98,6 @@ typedef unsigned long		__psize_t;
 /* Standard system types */
 typedef int			__clock_t;
 typedef int			__clockid_t;
-typedef double			__double_t;
-typedef float			__float_t;
 typedef long			__ptrdiff_t;
 typedef	int			__time_t;
 typedef int			__timer_t;
@@ -107,4 +116,10 @@ typedef	int			__rune_t;
 typedef	void *			__wctrans_t;
 typedef	void *			__wctype_t;
 
+#ifdef __ARMEB__
+#define _BYTE_ORDER _BIG_ENDIAN
+#else
+#define _BYTE_ORDER _LITTLE_ENDIAN
+#endif
+
 #endif	/* _ARM__TYPES_H_ */

libc/arch-arm/include/machine/asm.h

@@ -70,13 +70,7 @@
 #define _ASM_TYPE_FUNCTION	#function
 #define _ASM_TYPE_OBJECT	#object
 #define _ENTRY(x) \
-	.text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; x: .fnstart
-
-#define _ASM_SIZE(x)	.size x, .-x;
-
-#define _END(x) \
-	.fnend; \
-	_ASM_SIZE(x)
+	.text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; x:
 
 #ifdef GPROF
 # ifdef __ELF__
@@ -92,16 +86,8 @@
 
 #define	ENTRY(y)	_ENTRY(_C_LABEL(y)); _PROF_PROLOGUE
 #define	ENTRY_NP(y)	_ENTRY(_C_LABEL(y))
-#define	END(y)		_END(_C_LABEL(y))
 #define	ASENTRY(y)	_ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE
 #define	ASENTRY_NP(y)	_ENTRY(_ASM_LABEL(y))
-#define	ASEND(y)	_END(_ASM_LABEL(y))
-
-#ifdef __ELF__
-#define ENTRY_PRIVATE(y)  ENTRY(y); .hidden _C_LABEL(y)
-#else
-#define ENTRY_PRIVATE(y)  ENTRY(y)
-#endif
 
 #define	ASMSTR		.asciz
 

libc/arch-arm/include/machine/cpu-features.h

@@ -185,7 +185,6 @@
 #endif
 
 /* Assembly-only macros */
-#ifdef __ASSEMBLY__
 
 /* define a handy PLD(address) macro since the cache preload
  * is an optional opcode
@@ -196,6 +195,4 @@
 #  define  PLD(reg,offset)    /* nothing */
 #endif
 
-#endif /* ! __ASSEMBLY__ */
-
 #endif /* _ARM_MACHINE_CPU_FEATURES_H */

libc/arch-arm/include/machine/elf_machdep.h

@@ -1,138 +0,0 @@
-/*	$NetBSD: elf_machdep.h,v 1.10 2012/08/05 04:12:46 matt Exp $	*/
-
-#ifndef _ARM_ELF_MACHDEP_H_
-#define _ARM_ELF_MACHDEP_H_
-
-#if defined(__ARMEB__)
-#define ELF32_MACHDEP_ENDIANNESS	ELFDATA2MSB
-#else
-#define ELF32_MACHDEP_ENDIANNESS	ELFDATA2LSB
-#endif
-
-#define ELF64_MACHDEP_ENDIANNESS	XXX	/* break compilation */
-#define ELF64_MACHDEP_ID_CASES                                          \
-		/* no 64-bit ELF machine types supported */
-
-/* Processor specific flags for the ELF header e_flags field.  */
-#define EF_ARM_RELEXEC		0x00000001
-#define EF_ARM_HASENTRY		0x00000002
-#define EF_ARM_INTERWORK	0x00000004 /* GNU binutils 000413 */
-#define EF_ARM_SYMSARESORTED	0x00000004 /* ARM ELF A08 */
-#define EF_ARM_APCS_26		0x00000008 /* GNU binutils 000413 */
-#define EF_ARM_DYNSYMSUSESEGIDX	0x00000008 /* ARM ELF B01 */
-#define EF_ARM_APCS_FLOAT	0x00000010 /* GNU binutils 000413 */
-#define EF_ARM_MAPSYMSFIRST	0x00000010 /* ARM ELF B01 */
-#define EF_ARM_PIC		0x00000020
-#define EF_ARM_ALIGN8		0x00000040 /* 8-bit structure alignment.  */
-#define EF_ARM_NEW_ABI		0x00000080
-#define EF_ARM_OLD_ABI		0x00000100
-#define EF_ARM_SOFT_FLOAT	0x00000200
-#define EF_ARM_EABIMASK		0xff000000
-#define	EF_ARM_EABI_VER1	0x01000000
-#define	EF_ARM_EABI_VER2	0x02000000
-#define	EF_ARM_EABI_VER3	0x03000000
-#define	EF_ARM_EABI_VER4	0x04000000
-#define	EF_ARM_EABI_VER5	0x05000000
-
-#define	ELF32_MACHDEP_ID_CASES						\
-		case EM_ARM:						\
-			break;
-
-#define	ELF32_MACHDEP_ID	EM_ARM
-
-#define ARCH_ELFSIZE		32	/* MD native binary size */
-
-/* Processor specific relocation types */
-
-#define R_ARM_NONE		0
-#define R_ARM_PC24		1
-#define R_ARM_ABS32		2
-#define R_ARM_REL32		3
-#define R_ARM_PC13		4
-#define R_ARM_ABS16		5
-#define R_ARM_ABS12		6
-#define R_ARM_THM_ABS5		7
-#define R_ARM_ABS8		8
-#define R_ARM_SBREL32		9
-#define R_ARM_THM_PC22		10
-#define R_ARM_THM_PC8		11
-#define R_ARM_AMP_VCALL9	12
-#define R_ARM_SWI24		13
-#define R_ARM_THM_SWI8		14
-#define R_ARM_XPC25		15
-#define R_ARM_THM_XPC22		16
-
-/* TLS relocations */
-#define R_ARM_TLS_DTPMOD32	17	/* ID of module containing symbol */
-#define R_ARM_TLS_DTPOFF32	18	/* Offset in TLS block */
-#define R_ARM_TLS_TPOFF32	19	/* Offset in static TLS block */
-
-/* 20-31 are reserved for ARM Linux. */
-#define R_ARM_COPY		20
-#define R_ARM_GLOB_DAT		21
-#define	R_ARM_JUMP_SLOT		22
-#define R_ARM_RELATIVE		23
-#define	R_ARM_GOTOFF		24
-#define R_ARM_GOTPC		25
-#define R_ARM_GOT32		26
-#define R_ARM_PLT32		27
-
-#define R_ARM_ALU_PCREL_7_0	32
-#define R_ARM_ALU_PCREL_15_8	33
-#define R_ARM_ALU_PCREL_23_15	34
-#define R_ARM_ALU_SBREL_11_0	35
-#define R_ARM_ALU_SBREL_19_12	36
-#define R_ARM_ALU_SBREL_27_20	37
-
-/* 96-111 are reserved to G++. */
-#define R_ARM_GNU_VTENTRY	100
-#define R_ARM_GNU_VTINHERIT	101
-#define R_ARM_THM_PC11		102
-#define R_ARM_THM_PC9		103
-
-/* More TLS relocations */
-#define R_ARM_TLS_GD32		104	/* PC-rel 32 bit for global dynamic */
-#define R_ARM_TLS_LDM32		105	/* PC-rel 32 bit for local dynamic */
-#define R_ARM_TLS_LDO32		106	/* 32 bit offset relative to TLS */
-#define R_ARM_TLS_IE32		107	/* PC-rel 32 bit for GOT entry of */
-#define R_ARM_TLS_LE32		108
-#define R_ARM_TLS_LDO12		109
-#define R_ARM_TLS_LE12		110
-#define R_ARM_TLS_IE12GP	111
-
-/* 112-127 are reserved for private experiments. */
-
-#define R_ARM_RXPC25		249
-#define R_ARM_RSBREL32		250
-#define R_ARM_THM_RPC22		251
-#define R_ARM_RREL32		252
-#define R_ARM_RABS32		253
-#define R_ARM_RPC24		254
-#define R_ARM_RBASE		255
-
-#define R_TYPE(name)		__CONCAT(R_ARM_,name)
-
-/* Processor specific program header flags */
-#define PF_ARM_SB		0x10000000
-#define PF_ARM_PI		0x20000000
-#define PF_ARM_ENTRY		0x80000000
-
-/* Processor specific section header flags */
-#define SHF_ENTRYSECT		0x10000000
-#define SHF_COMDEF		0x80000000
-
-/* Processor specific symbol types */
-#define STT_ARM_TFUNC		STT_LOPROC
-
-#ifdef _KERNEL
-#ifdef ELFSIZE
-#define	ELF_MD_PROBE_FUNC	ELFNAME2(arm_netbsd,probe)
-#endif
-
-struct exec_package;
-
-int arm_netbsd_elf32_probe(struct lwp *, struct exec_package *, void *, char *,
-	vaddr_t *);
-#endif
-
-#endif /* _ARM_ELF_MACHDEP_H_ */

libc/arch-arm/include/machine/endian.h

@@ -1,89 +0,0 @@
-/*	$OpenBSD: endian.h,v 1.3 2005/12/13 00:35:23 millert Exp $	*/
-
-/*
- * Copyright (C) 2010 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#ifndef _ARM_ENDIAN_H_
-#define _ARM_ENDIAN_H_
-
-#ifdef __GNUC__
-
-/*
- * REV and REV16 weren't available on ARM5 or ARM4.
- * We don't include <machine/cpu-features.h> because it pollutes the
- * namespace with macros like PLD.
- */
-#if !defined __ARM_ARCH_5__ && !defined __ARM_ARCH_5T__ && \
-    !defined __ARM_ARCH_5TE__ && !defined __ARM_ARCH_5TEJ__ && \
-    !defined __ARM_ARCH_4T__ && !defined __ARM_ARCH_4__
-
-/* According to RealView Assembler User's Guide, REV and REV16 are available
- * in Thumb code and 16-bit instructions when used in Thumb-2 code.
- *
- * REV Rd, Rm
- *   Rd and Rm must both be Lo registers.
- *
- * REV16 Rd, Rm
- *   Rd and Rm must both be Lo registers.
- *
- * The +l constraint takes care of this without constraining us in ARM mode.
- */
-#define __swap16md(x) ({                                        \
-    register u_int16_t _x = (x);                                \
-    __asm volatile ("rev16 %0, %0" : "+l" (_x));                \
-    _x;                                                         \
-})
-
-#define __swap32md(x) ({                                        \
-    register u_int32_t _x = (x);                                \
-    __asm volatile ("rev %0, %0" : "+l" (_x));                  \
-    _x;                                                         \
-})
-
-#define __swap64md(x) ({                                        \
-    u_int64_t _swap64md_x = (x);                                \
-    (u_int64_t) __swap32md(_swap64md_x >> 32) |                 \
-        (u_int64_t) __swap32md(_swap64md_x & 0xffffffff) << 32; \
-})
-
-/* Tell sys/endian.h we have MD variants of the swap macros.  */
-#define MD_SWAP
-
-#endif  /* __ARM_ARCH__ */
-#endif  /* __GNUC__ */
-
-#if defined(__ARMEB__)
-#define _BYTE_ORDER _BIG_ENDIAN
-#else
-#define _BYTE_ORDER _LITTLE_ENDIAN
-#endif
-#define __STRICT_ALIGNMENT
-#include <sys/types.h>
-#include <sys/endian.h>
-
-#endif  /* !_ARM_ENDIAN_H_ */

libc/arch-arm/krait/bionic/__strcat_chk.S

@@ -1,225 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <machine/asm.h>
-#include "libc_events.h"
-
-    .syntax unified
-
-    .thumb
-    .thumb_func
-
-// Get the length of src string, then get the source of the dst string.
-// Check that the two lengths together don't exceed the threshold, then
-// do a memcpy of the data.
-ENTRY(__strcat_chk)
-    .cfi_startproc
-    pld     [r0, #0]
-    push    {r0, lr}
-    .save   {r0, lr}
-    .cfi_def_cfa_offset 8
-    .cfi_rel_offset r0, 0
-    .cfi_rel_offset lr, 4
-    push    {r4, r5}
-    .save   {r4, r5}
-    .cfi_adjust_cfa_offset 8
-    .cfi_rel_offset r4, 0
-    .cfi_rel_offset r5, 4
-
-    mov     lr, r2
-
-    // Save the dst register to r5
-    mov     r5, r0
-
-    // Zero out r4
-    eor     r4, r4, r4
-
-    // r1 contains the address of the string to count.
-.L_strlen_start:
-    mov     r0, r1
-    ands    r3, r1, #7
-    beq     .L_mainloop
-
-    // Align to a double word (64 bits).
-    rsb     r3, r3, #8
-    lsls    ip, r3, #31
-    beq     .L_align_to_32
-
-    ldrb    r2, [r1], #1
-    cbz     r2, .L_update_count_and_finish
-
-.L_align_to_32:
-    bcc     .L_align_to_64
-    ands    ip, r3, #2
-    beq     .L_align_to_64
-
-    ldrb    r2, [r1], #1
-    cbz     r2, .L_update_count_and_finish
-    ldrb    r2, [r1], #1
-    cbz     r2, .L_update_count_and_finish
-
-.L_align_to_64:
-    tst     r3, #4
-    beq     .L_mainloop
-    ldr     r3, [r1], #4
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     .L_zero_in_second_register
-
-    .p2align 2
-.L_mainloop:
-    ldrd    r2, r3, [r1], #8
-
-    pld     [r1, #64]
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     .L_zero_in_first_register
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     .L_zero_in_second_register
-    b       .L_mainloop
-
-.L_update_count_and_finish:
-    sub     r3, r1, r0
-    sub     r3, r3, #1
-    b       .L_finish
-
-.L_zero_in_first_register:
-    sub     r3, r1, r0
-    lsls    r2, ip, #17
-    bne     .L_sub8_and_finish
-    bcs     .L_sub7_and_finish
-    lsls    ip, ip, #1
-    bne     .L_sub6_and_finish
-
-    sub     r3, r3, #5
-    b       .L_finish
-
-.L_sub8_and_finish:
-    sub     r3, r3, #8
-    b       .L_finish
-
-.L_sub7_and_finish:
-    sub     r3, r3, #7
-    b       .L_finish
-
-.L_sub6_and_finish:
-    sub     r3, r3, #6
-    b       .L_finish
-
-.L_zero_in_second_register:
-    sub     r3, r1, r0
-    lsls    r2, ip, #17
-    bne     .L_sub4_and_finish
-    bcs     .L_sub3_and_finish
-    lsls    ip, ip, #1
-    bne     .L_sub2_and_finish
-
-    sub     r3, r3, #1
-    b       .L_finish
-
-.L_sub4_and_finish:
-    sub     r3, r3, #4
-    b       .L_finish
-
-.L_sub3_and_finish:
-    sub     r3, r3, #3
-    b       .L_finish
-
-.L_sub2_and_finish:
-    sub     r3, r3, #2
-
-.L_finish:
-    cmp     r4, #0
-    bne     .L_strlen_done
-
-    // Time to get the dst string length.
-    mov     r1, r5
-
-    // Save the original source address to r5.
-    mov     r5, r0
-
-    // Save the current length (adding 1 for the terminator).
-    add     r4, r3, #1
-    b       .L_strlen_start
-
-    // r0 holds the pointer to the dst string.
-    // r3 holds the dst string length.
-    // r4 holds the src string length + 1.
-.L_strlen_done:
-    add     r2, r3, r4
-    cmp     r2, lr
-    bhi     __strcat_chk_failed
-
-    // Set up the registers for the memcpy code.
-    mov     r1, r5
-    pld     [r1, #64]
-    mov     r2, r4
-    add     r0, r0, r3
-    pop     {r4, r5}
-
-    .cfi_endproc
-END(__strcat_chk)
-
-#define MEMCPY_BASE         __strcat_chk_memcpy_base
-#define MEMCPY_BASE_ALIGNED __strcat_chk_memcpy_base_aligned
-#include "memcpy_base.S"
-
-ENTRY(__strcat_chk_failed)
-    .cfi_startproc
-    .save   {r0, lr}
-    .save   {r4, r5}
-    .cfi_def_cfa_offset 8
-    .cfi_rel_offset r0, 0
-    .cfi_rel_offset lr, 4
-    .cfi_adjust_cfa_offset 8
-    .cfi_rel_offset r4, 0
-    .cfi_rel_offset r5, 4
-
-    ldr     r0, error_message
-    ldr     r1, error_code
-1:
-    add     r0, pc
-    bl      __fortify_chk_fail
-error_code:
-    .word   BIONIC_EVENT_STRCAT_BUFFER_OVERFLOW
-error_message:
-    .word   error_string-(1b+4)
-
-    .cfi_endproc
-END(__strcat_chk_failed)
-
-    .data
-error_string:
-    .string "strcat buffer overflow"

libc/arch-arm/krait/bionic/__strcpy_chk.S

@@ -1,187 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <machine/asm.h>
-#include "libc_events.h"
-
-    .syntax unified
-
-    .thumb
-    .thumb_func
-
-// Get the length of the source string first, then do a memcpy of the data
-// instead of a strcpy.
-ENTRY(__strcpy_chk)
-    .cfi_startproc
-    pld     [r0, #0]
-    push    {r0, lr}
-    .save   {r0, lr}
-    .cfi_def_cfa_offset 8
-    .cfi_rel_offset r0, 0
-    .cfi_rel_offset lr, 4
-
-    mov     lr, r2
-    mov     r0, r1
-
-    ands    r3, r1, #7
-    beq     .L_mainloop
-
-    // Align to a double word (64 bits).
-    rsb     r3, r3, #8
-    lsls    ip, r3, #31
-    beq     .L_align_to_32
-
-    ldrb    r2, [r0], #1
-    cbz     r2, .L_update_count_and_finish
-
-.L_align_to_32:
-    bcc     .L_align_to_64
-    ands    ip, r3, #2
-    beq     .L_align_to_64
-
-    ldrb    r2, [r0], #1
-    cbz     r2, .L_update_count_and_finish
-    ldrb    r2, [r0], #1
-    cbz     r2, .L_update_count_and_finish
-
-.L_align_to_64:
-    tst     r3, #4
-    beq     .L_mainloop
-    ldr     r3, [r0], #4
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     .L_zero_in_second_register
-
-    .p2align 2
-.L_mainloop:
-    ldrd    r2, r3, [r0], #8
-
-    pld     [r0, #64]
-
-    sub     ip, r2, #0x01010101
-    bic     ip, ip, r2
-    ands    ip, ip, #0x80808080
-    bne     .L_zero_in_first_register
-
-    sub     ip, r3, #0x01010101
-    bic     ip, ip, r3
-    ands    ip, ip, #0x80808080
-    bne     .L_zero_in_second_register
-    b       .L_mainloop
-
-.L_update_count_and_finish:
-    sub     r3, r0, r1
-    sub     r3, r3, #1
-    b       .L_check_size
-
-.L_zero_in_first_register:
-    sub     r3, r0, r1
-    lsls    r2, ip, #17
-    bne     .L_sub8_and_finish
-    bcs     .L_sub7_and_finish
-    lsls    ip, ip, #1
-    bne     .L_sub6_and_finish
-
-    sub     r3, r3, #5
-    b       .L_check_size
-
-.L_sub8_and_finish:
-    sub     r3, r3, #8
-    b       .L_check_size
-
-.L_sub7_and_finish:
-    sub     r3, r3, #7
-    b       .L_check_size
-
-.L_sub6_and_finish:
-    sub     r3, r3, #6
-    b       .L_check_size
-
-.L_zero_in_second_register:
-    sub     r3, r0, r1
-    lsls    r2, ip, #17
-    bne     .L_sub4_and_finish
-    bcs     .L_sub3_and_finish
-    lsls    ip, ip, #1
-    bne     .L_sub2_and_finish
-
-    sub     r3, r3, #1
-    b       .L_check_size
-
-.L_sub4_and_finish:
-    sub     r3, r3, #4
-    b       .L_check_size
-
-.L_sub3_and_finish:
-    sub     r3, r3, #3
-    b       .L_check_size
-
-.L_sub2_and_finish:
-    sub     r3, r3, #2
-
-.L_check_size:
-    pld     [r1, #0]
-    pld     [r1, #64]
-    ldr     r0, [sp]
-    cmp     r3, lr
-    bhs     __strcpy_chk_failed
-
-    // Add 1 for copy length to get the string terminator.
-    add     r2, r3, #1
-
-    .cfi_endproc
-END(__strcpy_chk)
-
-#define MEMCPY_BASE         __strcpy_chk_memcpy_base
-#define MEMCPY_BASE_ALIGNED __strcpy_chk_memcpy_base_aligned
-#include "memcpy_base.S"
-
-ENTRY(__strcpy_chk_failed)
-    .cfi_startproc
-    .save   {r0, lr}
-    .cfi_def_cfa_offset 8
-    .cfi_rel_offset r0, 0
-    .cfi_rel_offset lr, 4
-
-    ldr     r0, error_message
-    ldr     r1, error_code
-1:
-    add     r0, pc
-    bl      __fortify_chk_fail
-error_code:
-    .word   BIONIC_EVENT_STRCPY_BUFFER_OVERFLOW
-error_message:
-    .word   error_string-(1b+4)
-    .cfi_endproc
-END(__strcpy_chk_failed)
-
-    .data
-error_string:
-    .string "strcpy buffer overflow"

libc/arch-arm/krait/bionic/memcpy.S

@@ -1,92 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-/* Assumes neon instructions and a cache line size of 32 bytes. */
-
-#include <machine/asm.h>
-#include "libc_events.h"
-
-/*
- * This code assumes it is running on a processor that supports all arm v7
- * instructions, that supports neon instructions, and that has a 32 byte
- * cache line.
- */
-
-        .text
-        .syntax unified
-        .fpu    neon
-        .thumb
-        .thumb_func
-
-ENTRY(__memcpy_chk)
-        .cfi_startproc
-        cmp         r2, r3
-        bhi         __memcpy_chk_fail
-
-        // Fall through to memcpy...
-        .cfi_endproc
-END(__memcpy_chk)
-
-ENTRY(memcpy)
-        .cfi_startproc
-        pld     [r1, #64]
-        stmfd   sp!, {r0, lr}
-        .save   {r0, lr}
-        .cfi_def_cfa_offset 8
-        .cfi_rel_offset r0, 0
-        .cfi_rel_offset lr, 4
-        .cfi_endproc
-END(memcpy)
-
-#define MEMCPY_BASE         __memcpy_base
-#define MEMCPY_BASE_ALIGNED __memcpy_base_aligned
-#include "memcpy_base.S"
-
-ENTRY(__memcpy_chk_fail)
-        .cfi_startproc
-        // Preserve lr for backtrace.
-        push    {lr}
-        .save   {lr}
-        .cfi_def_cfa_offset 4
-        .cfi_rel_offset lr, 0
-
-        ldr     r0, error_message
-        ldr     r1, error_code
-1:
-        add     r0, pc
-        bl      __fortify_chk_fail
-error_code:
-        .word   BIONIC_EVENT_MEMCPY_BUFFER_OVERFLOW
-error_message:
-        .word   error_string-(1b+4)
-        .cfi_endproc
-END(__memcpy_chk_fail)
-
-        .data
-error_string:
-        .string     "memcpy buffer overflow"

libc/arch-arm/krait/bionic/memcpy_base.S

@@ -1,127 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-
-/*
- * This code assumes it is running on a processor that supports all arm v7
- * instructions, that supports neon instructions, and that has a 32 byte
- * cache line.
- */
-
-// Assumes neon instructions and a cache line size of 32 bytes.
-
-ENTRY(MEMCPY_BASE)
-        .cfi_startproc
-        .save {r0, lr}
-        .cfi_def_cfa_offset 8
-        .cfi_rel_offset r0, 0
-        .cfi_rel_offset lr, 4
-
-        /* do we have at least 16-bytes to copy (needed for alignment below) */
-        cmp         r2, #16
-        blo         5f
-
-        /* align destination to cache-line for the write-buffer */
-        rsb         r3, r0, #0
-        ands        r3, r3, #0xF
-        beq         2f
-
-        /* copy up to 15-bytes (count in r3) */
-        sub         r2, r2, r3
-        movs        ip, r3, lsl #31
-        itt         mi
-        ldrbmi      lr, [r1], #1
-        strbmi      lr, [r0], #1
-        itttt       cs
-        ldrbcs      ip, [r1], #1
-        ldrbcs      lr, [r1], #1
-        strbcs      ip, [r0], #1
-        strbcs      lr, [r0], #1
-        movs        ip, r3, lsl #29
-        bge         1f
-        // copies 4 bytes, destination 32-bits aligned
-        vld4.8      {d0[0], d1[0], d2[0], d3[0]}, [r1]!
-        vst4.8      {d0[0], d1[0], d2[0], d3[0]}, [r0, :32]!
-1:      bcc         2f
-        // copies 8 bytes, destination 64-bits aligned
-        vld1.8      {d0}, [r1]!
-        vst1.8      {d0}, [r0, :64]!
-
-2:      /* make sure we have at least 64 bytes to copy */
-        subs        r2, r2, #64
-        blo         2f
-
-1:      /* The main loop copies 64 bytes at a time */
-        vld1.8      {d0  - d3},   [r1]!
-        vld1.8      {d4  - d7},   [r1]!
-        pld         [r1, #(32*8)]
-        subs        r2, r2, #64
-        vst1.8      {d0  - d3},   [r0, :128]!
-        vst1.8      {d4  - d7},   [r0, :128]!
-        bhs         1b
-
-2:      /* fix-up the remaining count and make sure we have >= 32 bytes left */
-        adds        r2, r2, #32
-        blo         4f
-
-        /* Copy 32 bytes. These cache lines were already preloaded */
-        vld1.8      {d0 - d3},  [r1]!
-        sub         r2, r2, #32
-        vst1.8      {d0 - d3},  [r0, :128]!
-
-4:      /* less than 32 left */
-        add         r2, r2, #32
-        tst         r2, #0x10
-        beq         5f
-        // copies 16 bytes, 128-bits aligned
-        vld1.8      {d0, d1}, [r1]!
-        vst1.8      {d0, d1}, [r0, :128]!
-
-5:      /* copy up to 15-bytes (count in r2) */
-        movs        ip, r2, lsl #29
-        bcc         1f
-        vld1.8      {d0}, [r1]!
-        vst1.8      {d0}, [r0]!
-1:      bge         2f
-        vld4.8      {d0[0], d1[0], d2[0], d3[0]}, [r1]!
-        vst4.8      {d0[0], d1[0], d2[0], d3[0]}, [r0]!
-2:      movs        ip, r2, lsl #31
-        itt         mi
-        ldrbmi      r3, [r1], #1
-        strbmi      r3, [r0], #1
-        itttt       cs
-        ldrbcs      ip, [r1], #1
-        ldrbcs      lr, [r1], #1
-        strbcs      ip, [r0], #1
-        strbcs      lr, [r0], #1
-
-        ldmfd       sp!, {r0, lr}
-        bx          lr
-
-        .cfi_endproc
-END(MEMCPY_BASE)

libc/arch-arm/krait/bionic/memset.S

@@ -1,119 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <machine/cpu-features.h>
-#include <machine/asm.h>
-#include "libc_events.h"
-
-/*
- * This code assumes it is running on a processor that supports all arm v7
- * instructions, that supports neon instructions, and that supports
- * unaligned neon instruction accesses to memory.
- */
-
-    .fpu    neon
-
-ENTRY(__memset_chk)
-        .cfi_startproc
-        cmp         r2, r3
-        bls         .L_done
-
-        // Preserve lr for backtrace.
-        .save       {lr}
-        push        {lr}
-        .cfi_def_cfa_offset 4
-        .cfi_rel_offset lr, 0
-
-        ldr         r0, error_message
-        ldr         r1, error_code
-1:
-        add         r0, pc
-        bl          __fortify_chk_fail
-error_code:
-        .word       BIONIC_EVENT_MEMSET_BUFFER_OVERFLOW
-error_message:
-        .word       error_string-(1b+8)
-
-        .cfi_endproc
-END(__memset_chk)
-
-ENTRY(bzero)
-        .cfi_startproc
-        mov     r2, r1
-        mov     r1, #0
-
-.L_done:
-        // Fall through to memset...
-        .cfi_endproc
-END(bzero)
-
-/* memset() returns its first argument.  */
-ENTRY(memset)
-        .cfi_startproc
-        .save       {r0}
-        stmfd       sp!, {r0}
-        .cfi_def_cfa_offset 4
-        .cfi_rel_offset r0, 0
-
-        vdup.8      q0, r1
-
-        /* make sure we have at least 32 bytes to write */
-        subs        r2, r2, #32
-        blo         2f
-        vmov        q1, q0
-
-1:      /* The main loop writes 32 bytes at a time */
-        subs        r2, r2, #32
-        vst1.8      {d0 - d3}, [r0]!
-        bhs         1b
-
-2:      /* less than 32 left */
-        add         r2, r2, #32
-        tst         r2, #0x10
-        beq         3f
-
-        // writes 16 bytes, 128-bits aligned
-        vst1.8      {d0, d1}, [r0]!
-3:      /* write up to 15-bytes (count in r2) */
-        movs        ip, r2, lsl #29
-        bcc         1f
-        vst1.8      {d0}, [r0]!
-1:      bge         2f
-        vst1.32     {d0[0]}, [r0]!
-2:      movs        ip, r2, lsl #31
-        strmib      r1, [r0], #1
-        strcsb      r1, [r0], #1
-        strcsb      r1, [r0], #1
-        ldmfd       sp!, {r0}
-        bx          lr
-        .cfi_endproc
-END(memset)
-
-        .data
-error_string:
-        .string     "memset buffer overflow"

libc/arch-arm/krait/bionic/strcmp.S

@@ -1,500 +0,0 @@
-/*
- * Copyright (c) 2013 ARM Ltd
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the company may not be used to endorse or promote
- *    products derived from this software without specific prior written
- *    permission.
- *
- * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <machine/cpu-features.h>
-#include <machine/asm.h>
-
-#ifdef __ARMEB__
-#define S2LOMEM lsl
-#define S2LOMEMEQ lsleq
-#define S2HIMEM lsr
-#define MSB 0x000000ff
-#define LSB 0xff000000
-#define BYTE0_OFFSET 24
-#define BYTE1_OFFSET 16
-#define BYTE2_OFFSET 8
-#define BYTE3_OFFSET 0
-#else /* not  __ARMEB__ */
-#define S2LOMEM lsr
-#define S2LOMEMEQ lsreq
-#define S2HIMEM lsl
-#define BYTE0_OFFSET 0
-#define BYTE1_OFFSET 8
-#define BYTE2_OFFSET 16
-#define BYTE3_OFFSET 24
-#define MSB 0xff000000
-#define LSB 0x000000ff
-#endif /* not  __ARMEB__ */
-
-.syntax         unified
-
-#if defined (__thumb__)
-        .thumb
-        .thumb_func
-#endif
-
-ENTRY(strcmp)
-      /* Use LDRD whenever possible.  */
-
-/* The main thing to look out for when comparing large blocks is that
-   the loads do not cross a page boundary when loading past the index
-   of the byte with the first difference or the first string-terminator.
-
-   For example, if the strings are identical and the string-terminator
-   is at index k, byte by byte comparison will not load beyond address
-   s1+k and s2+k; word by word comparison may load up to 3 bytes beyond
-   k; double word - up to 7 bytes.  If the load of these bytes crosses
-   a page boundary, it might cause a memory fault (if the page is not mapped)
-   that would not have happened in byte by byte comparison.
-
-   If an address is (double) word aligned, then a load of a (double) word
-   from that address will not cross a page boundary.
-   Therefore, the algorithm below considers word and double-word alignment
-   of strings separately.  */
-
-/* High-level description of the algorithm.
-
-   * The fast path: if both strings are double-word aligned,
-     use LDRD to load two words from each string in every loop iteration.
-   * If the strings have the same offset from a word boundary,
-     use LDRB to load and compare byte by byte until
-     the first string is aligned to a word boundary (at most 3 bytes).
-     This is optimized for quick return on short unaligned strings.
-   * If the strings have the same offset from a double-word boundary,
-     use LDRD to load two words from each string in every loop iteration, as in the fast path.
-   * If the strings do not have the same offset from a double-word boundary,
-     load a word from the second string before the loop to initialize the queue.
-     Use LDRD to load two words from every string in every loop iteration.
-     Inside the loop, load the second word from the second string only after comparing
-     the first word, using the queued value, to guarantee safety across page boundaries.
-   * If the strings do not have the same offset from a word boundary,
-     use LDR and a shift queue. Order of loads and comparisons matters,
-     similarly to the previous case.
-
-   * Use UADD8 and SEL to compare words, and use REV and CLZ to compute the return value.
-   * The only difference between ARM and Thumb modes is the use of CBZ instruction.
-   * The only difference between big and little endian is the use of REV in little endian
-     to compute the return value, instead of MOV.
-*/
-
-        .macro m_cbz reg label
-#ifdef __thumb2__
-        cbz     \reg, \label
-#else   /* not defined __thumb2__ */
-        cmp     \reg, #0
-        beq     \label
-#endif /* not defined __thumb2__ */
-        .endm /* m_cbz */
-
-        .macro m_cbnz reg label
-#ifdef __thumb2__
-        cbnz    \reg, \label
-#else   /* not defined __thumb2__ */
-        cmp     \reg, #0
-        bne     \label
-#endif /* not defined __thumb2__ */
-        .endm /* m_cbnz */
-
-        .macro  init
-        /* Macro to save temporary registers and prepare magic values.  */
-        subs    sp, sp, #16
-        .cfi_def_cfa_offset 16
-        strd    r4, r5, [sp, #8]
-        .cfi_rel_offset r4, 0
-        .cfi_rel_offset r5, 4
-        strd    r6, r7, [sp]
-        .cfi_rel_offset r6, 8
-        .cfi_rel_offset r7, 12
-        mvn     r6, #0  /* all F */
-        mov     r7, #0  /* all 0 */
-        .endm   /* init */
-
-        .macro  magic_compare_and_branch w1 w2 label
-        /* Macro to compare registers w1 and w2 and conditionally branch to label.  */
-        cmp     \w1, \w2        /* Are w1 and w2 the same?  */
-        magic_find_zero_bytes \w1
-        it      eq
-        cmpeq   ip, #0          /* Is there a zero byte in w1?  */
-        bne     \label
-        .endm /* magic_compare_and_branch */
-
-        .macro  magic_find_zero_bytes w1
-        /* Macro to find all-zero bytes in w1, result is in ip.  */
-#if (defined (__ARM_FEATURE_DSP))
-        uadd8   ip, \w1, r6
-        sel     ip, r7, r6
-#else /* not defined (__ARM_FEATURE_DSP) */
-        /* __ARM_FEATURE_DSP is not defined for some Cortex-M processors.
-        Coincidently, these processors only have Thumb-2 mode, where we can use the
-        the (large) magic constant available directly as an immediate in instructions.
-        Note that we cannot use the magic constant in ARM mode, where we need
-        to create the constant in a register.  */
-        sub     ip, \w1, #0x01010101
-        bic     ip, ip, \w1
-        and     ip, ip, #0x80808080
-#endif /* not defined (__ARM_FEATURE_DSP) */
-        .endm /* magic_find_zero_bytes */
-
-        .macro  setup_return w1 w2
-#ifdef __ARMEB__
-        mov     r1, \w1
-        mov     r2, \w2
-#else /* not  __ARMEB__ */
-        rev     r1, \w1
-        rev     r2, \w2
-#endif /* not  __ARMEB__ */
-        .endm /* setup_return */
-
-        .cfi_startproc
-        pld [r0, #0]
-        pld [r1, #0]
-
-        /* Are both strings double-word aligned?  */
-        orr     ip, r0, r1
-        tst     ip, #7
-        bne     .L_do_align
-
-        /* Fast path.  */
-        .save   {r4-r7}
-        init
-
-.L_doubleword_aligned:
-
-        /* Get here when the strings to compare are double-word aligned.  */
-        /* Compare two words in every iteration.  */
-        .p2align        2
-2:
-        pld [r0, #16]
-        pld [r1, #16]
-
-        /* Load the next double-word from each string.  */
-        ldrd    r2, r3, [r0], #8
-        ldrd    r4, r5, [r1], #8
-
-        magic_compare_and_branch w1=r2, w2=r4, label=.L_return_24
-        magic_compare_and_branch w1=r3, w2=r5, label=.L_return_35
-        b       2b
-
-.L_do_align:
-        /* Is the first string word-aligned?  */
-        ands    ip, r0, #3
-        beq     .L_word_aligned_r0
-
-        /* Fast compare byte by byte until the first string is word-aligned.  */
-        /* The offset of r0 from a word boundary is in ip. Thus, the number of bytes
-        to read until the next word boundary is 4-ip.  */
-        bic     r0, r0, #3
-        ldr     r2, [r0], #4
-        lsls    ip, ip, #31
-        beq     .L_byte2
-        bcs     .L_byte3
-
-.L_byte1:
-        ldrb    ip, [r1], #1
-        uxtb    r3, r2, ror #BYTE1_OFFSET
-        subs    ip, r3, ip
-        bne     .L_fast_return
-        m_cbz   reg=r3, label=.L_fast_return
-
-.L_byte2:
-        ldrb    ip, [r1], #1
-        uxtb    r3, r2, ror #BYTE2_OFFSET
-        subs    ip, r3, ip
-        bne     .L_fast_return
-        m_cbz   reg=r3, label=.L_fast_return
-
-.L_byte3:
-        ldrb    ip, [r1], #1
-        uxtb    r3, r2, ror #BYTE3_OFFSET
-        subs    ip, r3, ip
-        bne     .L_fast_return
-        m_cbnz  reg=r3, label=.L_word_aligned_r0
-
-.L_fast_return:
-        mov     r0, ip
-        bx      lr
-
-.L_word_aligned_r0:
-        init
-        /* The first string is word-aligned.  */
-        /* Is the second string word-aligned?  */
-        ands    ip, r1, #3
-        bne     .L_strcmp_unaligned
-
-.L_word_aligned:
-        /* The strings are word-aligned. */
-        /* Is the first string double-word aligned?  */
-        tst     r0, #4
-        beq     .L_doubleword_aligned_r0
-
-        /* If r0 is not double-word aligned yet, align it by loading
-        and comparing the next word from each string.  */
-        ldr     r2, [r0], #4
-        ldr     r4, [r1], #4
-        magic_compare_and_branch w1=r2 w2=r4 label=.L_return_24
-
-.L_doubleword_aligned_r0:
-        /* Get here when r0 is double-word aligned.  */
-        /* Is r1 doubleword_aligned?  */
-        tst     r1, #4
-        beq     .L_doubleword_aligned
-
-        /* Get here when the strings to compare are word-aligned,
-        r0 is double-word aligned, but r1 is not double-word aligned.  */
-
-        /* Initialize the queue.  */
-        ldr     r5, [r1], #4
-
-        /* Compare two words in every iteration.  */
-        .p2align        2
-3:
-        pld [r0, #16]
-        pld [r1, #16]
-
-        /* Load the next double-word from each string and compare.  */
-        ldrd    r2, r3, [r0], #8
-        magic_compare_and_branch w1=r2 w2=r5 label=.L_return_25
-        ldrd    r4, r5, [r1], #8
-        magic_compare_and_branch w1=r3 w2=r4 label=.L_return_34
-        b       3b
-
-        .macro miscmp_word offsetlo offsethi
-        /* Macro to compare misaligned strings.  */
-        /* r0, r1 are word-aligned, and at least one of the strings
-        is not double-word aligned.  */
-        /* Compare one word in every loop iteration.  */
-        /* OFFSETLO is the original bit-offset of r1 from a word-boundary,
-        OFFSETHI is 32 - OFFSETLO (i.e., offset from the next word).  */
-
-        /* Initialize the shift queue.  */
-        ldr     r5, [r1], #4
-
-        /* Compare one word from each string in every loop iteration.  */
-        .p2align        2
-7:
-        ldr     r3, [r0], #4
-        S2LOMEM r5, r5, #\offsetlo
-        magic_find_zero_bytes w1=r3
-        cmp     r7, ip, S2HIMEM #\offsetlo
-        and     r2, r3, r6, S2LOMEM #\offsetlo
-        it      eq
-        cmpeq   r2, r5
-        bne     .L_return_25
-        ldr     r5, [r1], #4
-        cmp     ip, #0
-        eor r3, r2, r3
-        S2HIMEM r2, r5, #\offsethi
-        it      eq
-        cmpeq   r3, r2
-        bne     .L_return_32
-        b       7b
-        .endm /* miscmp_word */
-
-.L_strcmp_unaligned:
-        /* r0 is word-aligned, r1 is at offset ip from a word.  */
-        /* Align r1 to the (previous) word-boundary.  */
-        bic     r1, r1, #3
-
-        /* Unaligned comparison word by word using LDRs. */
-        cmp     ip, #2
-        beq     .L_miscmp_word_16                 /* If ip == 2.  */
-        bge     .L_miscmp_word_24                 /* If ip == 3.  */
-        miscmp_word offsetlo=8 offsethi=24        /* If ip == 1.  */
-.L_miscmp_word_24:  miscmp_word offsetlo=24 offsethi=8
-
-
-.L_return_32:
-        setup_return w1=r3, w2=r2
-        b       .L_do_return
-.L_return_34:
-        setup_return w1=r3, w2=r4
-        b       .L_do_return
-.L_return_25:
-        setup_return w1=r2, w2=r5
-        b       .L_do_return
-.L_return_35:
-        setup_return w1=r3, w2=r5
-        b       .L_do_return
-.L_return_24:
-        setup_return w1=r2, w2=r4
-
-.L_do_return:
-
-#ifdef __ARMEB__
-        mov     r0, ip
-#else /* not  __ARMEB__ */
-        rev     r0, ip
-#endif /* not  __ARMEB__ */
-
-        /* Restore temporaries early, before computing the return value.  */
-        ldrd    r6, r7, [sp]
-        ldrd    r4, r5, [sp, #8]
-        adds    sp, sp, #16
-        .cfi_def_cfa_offset 0
-        .cfi_restore r4
-        .cfi_restore r5
-        .cfi_restore r6
-        .cfi_restore r7
-
-        /* There is a zero or a different byte between r1 and r2.  */
-        /* r0 contains a mask of all-zero bytes in r1.  */
-        /* Using r0 and not ip here because cbz requires low register.  */
-        m_cbz   reg=r0, label=.L_compute_return_value
-        clz     r0, r0
-        /* r0 contains the number of bits on the left of the first all-zero byte in r1.  */
-        rsb     r0, r0, #24
-        /* Here, r0 contains the number of bits on the right of the first all-zero byte in r1.  */
-        lsr     r1, r1, r0
-        lsr     r2, r2, r0
-
-.L_compute_return_value:
-        movs    r0, #1
-        cmp     r1, r2
-        /* The return value is computed as follows.
-        If r1>r2 then (C==1 and Z==0) and LS doesn't hold and r0 is #1 at return.
-        If r1<r2 then (C==0 and Z==0) and we execute SBC with carry_in=0,
-        which means r0:=r0-r0-1 and r0 is #-1 at return.
-        If r1=r2 then (C==1 and Z==1) and we execute SBC with carry_in=1,
-        which means r0:=r0-r0 and r0 is #0 at return.
-        (C==0 and Z==1) cannot happen because the carry bit is "not borrow".  */
-        it      ls
-        sbcls   r0, r0, r0
-        bx      lr
-
-    /* The code from the previous version of strcmp.S handles this
-     * particular case (the second string is 2 bytes off a word alignment)
-     * faster than any current version. In this very specific case, use the
-     * previous version. See bionic/libc/arch-arm/cortex-a15/bionic/strcmp.S
-     * for the unedited version of this code.
-     */
-.L_miscmp_word_16:
-	wp1 .req r0
-	wp2 .req r1
-	b1  .req r2
-	w1  .req r4
-	w2  .req r5
-	t1  .req ip
-	@ r3 is scratch
-
-    /* At this point, wp1 (r0) has already been word-aligned. */
-2:
-	mov	b1, #1
-	orr	b1, b1, b1, lsl #8
-	orr	b1, b1, b1, lsl #16
-
-	and	t1, wp2, #3
-	bic	wp2, wp2, #3
-	ldr	w1, [wp1], #4
-	ldr	w2, [wp2], #4
-
-	/* Critical inner Loop: Block with 2 bytes initial overlap */
-	.p2align	2
-2:
-	S2HIMEM	t1, w1, #16
-	sub	r3, w1, b1
-	S2LOMEM	t1, t1, #16
-	bic	r3, r3, w1
-	cmp	t1, w2, S2LOMEM #16
-	bne	4f
-	ands	r3, r3, b1, lsl #7
-	it	eq
-	ldreq	w2, [wp2], #4
-	bne	5f
-	eor	t1, t1, w1
-	cmp	t1, w2, S2HIMEM #16
-	bne	6f
-	ldr	w1, [wp1], #4
-	b	2b
-
-5:
-#ifdef __ARMEB__
-	/* The syndrome value may contain false ones if the string ends
-	 * with the bytes 0x01 0x00
-	 */
-	tst	w1, #0xff000000
-	it	ne
-	tstne	w1, #0x00ff0000
-	beq	7f
-#else
-	lsls	r3, r3, #16
-	bne	7f
-#endif
-	ldrh	w2, [wp2]
-	S2LOMEM	t1, w1, #16
-#ifdef __ARMEB__
-	lsl	w2, w2, #16
-#endif
-	b	8f
-
-6:
-	S2HIMEM	w2, w2, #16
-	S2LOMEM	t1, w1, #16
-4:
-	S2LOMEM	w2, w2, #16
-	b	8f
-
-7:
-	mov	r0, #0
-
-    /* Restore registers and stack. */
-    ldrd    r6, r7, [sp]
-    ldrd    r4, r5, [sp, #8]
-    adds    sp, sp, #16
-    .cfi_def_cfa_offset 0
-    .cfi_restore r4
-    .cfi_restore r5
-    .cfi_restore r6
-    .cfi_restore r7
-
-	bx	lr
-
-8:
-	and	r2, t1, #LSB
-	and	r0, w2, #LSB
-	cmp	r0, #1
-	it	cs
-	cmpcs	r0, r2
-	itt	eq
-	S2LOMEMEQ	t1, t1, #8
-	S2LOMEMEQ	w2, w2, #8
-	beq	8b
-	sub	r0, r2, r0
-
-    /* Restore registers and stack. */
-    ldrd    r6, r7, [sp]
-    ldrd    r4, r5, [sp, #8]
-    adds    sp, sp, #16
-    .cfi_def_cfa_offset 0
-    .cfi_restore r4
-    .cfi_restore r5
-    .cfi_restore r6
-    .cfi_restore r7
-
-	bx	lr
-    .cfi_endproc
-END(strcmp)

libc/arch-arm/krait/krait.mk

@@ -1,11 +0,0 @@
-$(call libc-add-cpu-variant-src,MEMCPY,arch-arm/krait/bionic/memcpy.S)
-$(call libc-add-cpu-variant-src,MEMSET,arch-arm/krait/bionic/memset.S)
-$(call libc-add-cpu-variant-src,STRCMP,arch-arm/krait/bionic/strcmp.S)
-$(call libc-add-cpu-variant-src,__STRCAT_CHK,arch-arm/krait/bionic/__strcat_chk.S)
-$(call libc-add-cpu-variant-src,__STRCPY_CHK,arch-arm/krait/bionic/__strcpy_chk.S)
-# Use cortex-a15 versions of strcat/strcpy/strlen.
-$(call libc-add-cpu-variant-src,STRCAT,arch-arm/cortex-a15/bionic/strcat.S)
-$(call libc-add-cpu-variant-src,STRCPY,arch-arm/cortex-a15/bionic/strcpy.S)
-$(call libc-add-cpu-variant-src,STRLEN,arch-arm/cortex-a15/bionic/strlen.S)
-
-include bionic/libc/arch-arm/generic/generic.mk

libc/arch-arm/syscalls.mk

@@ -4,7 +4,6 @@ syscall_src += arch-arm/syscalls/_exit.S
 syscall_src += arch-arm/syscalls/_exit_thread.S
 syscall_src += arch-arm/syscalls/__fork.S
 syscall_src += arch-arm/syscalls/__waitid.S
-syscall_src += arch-arm/syscalls/wait4.S
 syscall_src += arch-arm/syscalls/__sys_clone.S
 syscall_src += arch-arm/syscalls/execve.S
 syscall_src += arch-arm/syscalls/__setuid.S
@@ -15,11 +14,9 @@ syscall_src += arch-arm/syscalls/getegid.S
 syscall_src += arch-arm/syscalls/getresuid.S
 syscall_src += arch-arm/syscalls/getresgid.S
 syscall_src += arch-arm/syscalls/gettid.S
-syscall_src += arch-arm/syscalls/readahead.S
 syscall_src += arch-arm/syscalls/getgroups.S
 syscall_src += arch-arm/syscalls/getpgid.S
 syscall_src += arch-arm/syscalls/getppid.S
-syscall_src += arch-arm/syscalls/getsid.S
 syscall_src += arch-arm/syscalls/setsid.S
 syscall_src += arch-arm/syscalls/setgid.S
 syscall_src += arch-arm/syscalls/__setreuid.S
@@ -44,8 +41,8 @@ syscall_src += arch-arm/syscalls/sigaltstack.S
 syscall_src += arch-arm/syscalls/acct.S
 syscall_src += arch-arm/syscalls/read.S
 syscall_src += arch-arm/syscalls/write.S
-syscall_src += arch-arm/syscalls/pread64.S
-syscall_src += arch-arm/syscalls/pwrite64.S
+syscall_src += arch-arm/syscalls/__pread64.S
+syscall_src += arch-arm/syscalls/__pwrite64.S
 syscall_src += arch-arm/syscalls/__open.S
 syscall_src += arch-arm/syscalls/__openat.S
 syscall_src += arch-arm/syscalls/close.S
@@ -60,8 +57,6 @@ syscall_src += arch-arm/syscalls/mprotect.S
 syscall_src += arch-arm/syscalls/madvise.S
 syscall_src += arch-arm/syscalls/mlock.S
 syscall_src += arch-arm/syscalls/munlock.S
-syscall_src += arch-arm/syscalls/mlockall.S
-syscall_src += arch-arm/syscalls/munlockall.S
 syscall_src += arch-arm/syscalls/mincore.S
 syscall_src += arch-arm/syscalls/__ioctl.S
 syscall_src += arch-arm/syscalls/readv.S
@@ -75,7 +70,6 @@ syscall_src += arch-arm/syscalls/pipe2.S
 syscall_src += arch-arm/syscalls/dup2.S
 syscall_src += arch-arm/syscalls/select.S
 syscall_src += arch-arm/syscalls/ftruncate.S
-syscall_src += arch-arm/syscalls/ftruncate64.S
 syscall_src += arch-arm/syscalls/getdents.S
 syscall_src += arch-arm/syscalls/fsync.S
 syscall_src += arch-arm/syscalls/fdatasync.S
@@ -89,10 +83,6 @@ syscall_src += arch-arm/syscalls/mkdirat.S
 syscall_src += arch-arm/syscalls/fchownat.S
 syscall_src += arch-arm/syscalls/fchmodat.S
 syscall_src += arch-arm/syscalls/renameat.S
-syscall_src += arch-arm/syscalls/fsetxattr.S
-syscall_src += arch-arm/syscalls/fgetxattr.S
-syscall_src += arch-arm/syscalls/flistxattr.S
-syscall_src += arch-arm/syscalls/fremovexattr.S
 syscall_src += arch-arm/syscalls/link.S
 syscall_src += arch-arm/syscalls/unlink.S
 syscall_src += arch-arm/syscalls/unlinkat.S
@@ -112,22 +102,10 @@ syscall_src += arch-arm/syscalls/rmdir.S
 syscall_src += arch-arm/syscalls/rename.S
 syscall_src += arch-arm/syscalls/__getcwd.S
 syscall_src += arch-arm/syscalls/access.S
-syscall_src += arch-arm/syscalls/faccessat.S
 syscall_src += arch-arm/syscalls/symlink.S
 syscall_src += arch-arm/syscalls/fchdir.S
 syscall_src += arch-arm/syscalls/truncate.S
-syscall_src += arch-arm/syscalls/setxattr.S
-syscall_src += arch-arm/syscalls/lsetxattr.S
-syscall_src += arch-arm/syscalls/getxattr.S
-syscall_src += arch-arm/syscalls/lgetxattr.S
-syscall_src += arch-arm/syscalls/listxattr.S
-syscall_src += arch-arm/syscalls/llistxattr.S
-syscall_src += arch-arm/syscalls/removexattr.S
-syscall_src += arch-arm/syscalls/lremovexattr.S
 syscall_src += arch-arm/syscalls/__statfs64.S
-syscall_src += arch-arm/syscalls/unshare.S
-syscall_src += arch-arm/syscalls/swapon.S
-syscall_src += arch-arm/syscalls/swapoff.S
 syscall_src += arch-arm/syscalls/pause.S
 syscall_src += arch-arm/syscalls/gettimeofday.S
 syscall_src += arch-arm/syscalls/settimeofday.S
@@ -145,10 +123,6 @@ syscall_src += arch-arm/syscalls/__timer_gettime.S
 syscall_src += arch-arm/syscalls/__timer_getoverrun.S
 syscall_src += arch-arm/syscalls/__timer_delete.S
 syscall_src += arch-arm/syscalls/utimes.S
-syscall_src += arch-arm/syscalls/utimensat.S
-syscall_src += arch-arm/syscalls/timerfd_create.S
-syscall_src += arch-arm/syscalls/timerfd_settime.S
-syscall_src += arch-arm/syscalls/timerfd_gettime.S
 syscall_src += arch-arm/syscalls/sigaction.S
 syscall_src += arch-arm/syscalls/sigprocmask.S
 syscall_src += arch-arm/syscalls/__sigsuspend.S
@@ -156,7 +130,6 @@ syscall_src += arch-arm/syscalls/__rt_sigaction.S
 syscall_src += arch-arm/syscalls/__rt_sigprocmask.S
 syscall_src += arch-arm/syscalls/__rt_sigtimedwait.S
 syscall_src += arch-arm/syscalls/sigpending.S
-syscall_src += arch-arm/syscalls/signalfd4.S
 syscall_src += arch-arm/syscalls/socket.S
 syscall_src += arch-arm/syscalls/socketpair.S
 syscall_src += arch-arm/syscalls/bind.S
@@ -180,12 +153,10 @@ syscall_src += arch-arm/syscalls/sched_getparam.S
 syscall_src += arch-arm/syscalls/sched_get_priority_max.S
 syscall_src += arch-arm/syscalls/sched_get_priority_min.S
 syscall_src += arch-arm/syscalls/sched_rr_get_interval.S
-syscall_src += arch-arm/syscalls/sched_setaffinity.S
-syscall_src += arch-arm/syscalls/__sched_getaffinity.S
-syscall_src += arch-arm/syscalls/__getcpu.S
 syscall_src += arch-arm/syscalls/ioprio_set.S
 syscall_src += arch-arm/syscalls/ioprio_get.S
 syscall_src += arch-arm/syscalls/uname.S
+syscall_src += arch-arm/syscalls/__wait4.S
 syscall_src += arch-arm/syscalls/umask.S
 syscall_src += arch-arm/syscalls/__reboot.S
 syscall_src += arch-arm/syscalls/__syslog.S
@@ -193,8 +164,6 @@ syscall_src += arch-arm/syscalls/init_module.S
 syscall_src += arch-arm/syscalls/delete_module.S
 syscall_src += arch-arm/syscalls/klogctl.S
 syscall_src += arch-arm/syscalls/sysinfo.S
-syscall_src += arch-arm/syscalls/personality.S
-syscall_src += arch-arm/syscalls/perf_event_open.S
 syscall_src += arch-arm/syscalls/futex.S
 syscall_src += arch-arm/syscalls/epoll_create.S
 syscall_src += arch-arm/syscalls/epoll_ctl.S

libc/arch-arm/syscalls/__brk.S

@@ -1,15 +1,19 @@
 /* autogenerated by gensyscalls.py */
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
+#include <sys/linux-syscalls.h>
 
-ENTRY(__brk)
-    mov     ip, r7
+    .text
+    .type __brk, #function
+    .globl __brk
+    .align 4
+    .fnstart
+
+__brk:
+    .save   {r4, r7}
+    stmfd   sp!, {r4, r7}
     ldr     r7, =__NR_brk
     swi     #0
-    mov     r7, ip
-    cmn     r0, #(MAX_ERRNO + 1)
-    bxls    lr
-    neg     r0, r0
-    b       __set_errno
-END(__brk)
+    ldmfd   sp!, {r4, r7}
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno
+    .fnend

libc/arch-arm/syscalls/__fcntl.S

@@ -1,15 +1,19 @@
 /* autogenerated by gensyscalls.py */
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
+#include <sys/linux-syscalls.h>
 
-ENTRY(__fcntl)
-    mov     ip, r7
+    .text
+    .type __fcntl, #function
+    .globl __fcntl
+    .align 4
+    .fnstart
+
+__fcntl:
+    .save   {r4, r7}
+    stmfd   sp!, {r4, r7}
     ldr     r7, =__NR_fcntl
     swi     #0
-    mov     r7, ip
-    cmn     r0, #(MAX_ERRNO + 1)
-    bxls    lr
-    neg     r0, r0
-    b       __set_errno
-END(__fcntl)
+    ldmfd   sp!, {r4, r7}
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno
+    .fnend

libc/arch-arm/syscalls/__fcntl64.S

@@ -1,15 +1,19 @@
 /* autogenerated by gensyscalls.py */
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
+#include <sys/linux-syscalls.h>
 
-ENTRY(__fcntl64)
-    mov     ip, r7
+    .text
+    .type __fcntl64, #function
+    .globl __fcntl64
+    .align 4
+    .fnstart
+
+__fcntl64:
+    .save   {r4, r7}
+    stmfd   sp!, {r4, r7}
     ldr     r7, =__NR_fcntl64
     swi     #0
-    mov     r7, ip
-    cmn     r0, #(MAX_ERRNO + 1)
-    bxls    lr
-    neg     r0, r0
-    b       __set_errno
-END(__fcntl64)
+    ldmfd   sp!, {r4, r7}
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno
+    .fnend

libc/arch-arm/syscalls/__fork.S

@@ -1,15 +1,19 @@
 /* autogenerated by gensyscalls.py */
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
+#include <sys/linux-syscalls.h>
 
-ENTRY(__fork)
-    mov     ip, r7
+    .text
+    .type __fork, #function
+    .globl __fork
+    .align 4
+    .fnstart
+
+__fork:
+    .save   {r4, r7}
+    stmfd   sp!, {r4, r7}
     ldr     r7, =__NR_fork
     swi     #0
-    mov     r7, ip
-    cmn     r0, #(MAX_ERRNO + 1)
-    bxls    lr
-    neg     r0, r0
-    b       __set_errno
-END(__fork)
+    ldmfd   sp!, {r4, r7}
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno
+    .fnend

libc/arch-arm/syscalls/__fstatfs64.S

@@ -1,15 +1,19 @@
 /* autogenerated by gensyscalls.py */
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
+#include <sys/linux-syscalls.h>
 
-ENTRY(__fstatfs64)
-    mov     ip, r7
+    .text
+    .type __fstatfs64, #function
+    .globl __fstatfs64
+    .align 4
+    .fnstart
+
+__fstatfs64:
+    .save   {r4, r7}
+    stmfd   sp!, {r4, r7}
     ldr     r7, =__NR_fstatfs64
     swi     #0
-    mov     r7, ip
-    cmn     r0, #(MAX_ERRNO + 1)
-    bxls    lr
-    neg     r0, r0
-    b       __set_errno
-END(__fstatfs64)
+    ldmfd   sp!, {r4, r7}
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno
+    .fnend

libc/arch-arm/syscalls/__getcpu.S

@@ -1,15 +0,0 @@
-/* autogenerated by gensyscalls.py */
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
-
-ENTRY(__getcpu)
-    mov     ip, r7
-    ldr     r7, =__NR_getcpu
-    swi     #0
-    mov     r7, ip
-    cmn     r0, #(MAX_ERRNO + 1)
-    bxls    lr
-    neg     r0, r0
-    b       __set_errno
-END(__getcpu)

libc/arch-arm/syscalls/__getcwd.S

@@ -1,15 +1,19 @@
 /* autogenerated by gensyscalls.py */
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
+#include <sys/linux-syscalls.h>
 
-ENTRY(__getcwd)
-    mov     ip, r7
+    .text
+    .type __getcwd, #function
+    .globl __getcwd
+    .align 4
+    .fnstart
+
+__getcwd:
+    .save   {r4, r7}
+    stmfd   sp!, {r4, r7}
     ldr     r7, =__NR_getcwd
     swi     #0
-    mov     r7, ip
-    cmn     r0, #(MAX_ERRNO + 1)
-    bxls    lr
-    neg     r0, r0
-    b       __set_errno
-END(__getcwd)
+    ldmfd   sp!, {r4, r7}
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno
+    .fnend

libc/arch-arm/syscalls/__getpriority.S

@@ -1,15 +1,19 @@
 /* autogenerated by gensyscalls.py */
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
+#include <sys/linux-syscalls.h>
 
-ENTRY(__getpriority)
-    mov     ip, r7
+    .text
+    .type __getpriority, #function
+    .globl __getpriority
+    .align 4
+    .fnstart
+
+__getpriority:
+    .save   {r4, r7}
+    stmfd   sp!, {r4, r7}
     ldr     r7, =__NR_getpriority
     swi     #0
-    mov     r7, ip
-    cmn     r0, #(MAX_ERRNO + 1)
-    bxls    lr
-    neg     r0, r0
-    b       __set_errno
-END(__getpriority)
+    ldmfd   sp!, {r4, r7}
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno
+    .fnend

libc/arch-arm/syscalls/__ioctl.S

@@ -1,15 +1,19 @@
 /* autogenerated by gensyscalls.py */
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
+#include <sys/linux-syscalls.h>
 
-ENTRY(__ioctl)
-    mov     ip, r7
+    .text
+    .type __ioctl, #function
+    .globl __ioctl
+    .align 4
+    .fnstart
+
+__ioctl:
+    .save   {r4, r7}
+    stmfd   sp!, {r4, r7}
     ldr     r7, =__NR_ioctl
     swi     #0
-    mov     r7, ip
-    cmn     r0, #(MAX_ERRNO + 1)
-    bxls    lr
-    neg     r0, r0
-    b       __set_errno
-END(__ioctl)
+    ldmfd   sp!, {r4, r7}
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno
+    .fnend

libc/arch-arm/syscalls/__llseek.S

@@ -1,9 +1,13 @@
 /* autogenerated by gensyscalls.py */
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
+#include <sys/linux-syscalls.h>
 
-ENTRY(__llseek)
+    .text
+    .type __llseek, #function
+    .globl __llseek
+    .align 4
+    .fnstart
+
+__llseek:
     mov     ip, sp
     .save   {r4, r5, r6, r7}
     stmfd   sp!, {r4, r5, r6, r7}
@@ -11,8 +15,7 @@ ENTRY(__llseek)
     ldr     r7, =__NR__llseek
     swi     #0
     ldmfd   sp!, {r4, r5, r6, r7}
-    cmn     r0, #(MAX_ERRNO + 1)
-    bxls    lr
-    neg     r0, r0
-    b       __set_errno
-END(__llseek)
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno
+    .fnend

libc/arch-arm/syscalls/__mmap2.S

@@ -1,9 +1,13 @@
 /* autogenerated by gensyscalls.py */
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
+#include <sys/linux-syscalls.h>
 
-ENTRY(__mmap2)
+    .text
+    .type __mmap2, #function
+    .globl __mmap2
+    .align 4
+    .fnstart
+
+__mmap2:
     mov     ip, sp
     .save   {r4, r5, r6, r7}
     stmfd   sp!, {r4, r5, r6, r7}
@@ -11,8 +15,7 @@ ENTRY(__mmap2)
     ldr     r7, =__NR_mmap2
     swi     #0
     ldmfd   sp!, {r4, r5, r6, r7}
-    cmn     r0, #(MAX_ERRNO + 1)
-    bxls    lr
-    neg     r0, r0
-    b       __set_errno
-END(__mmap2)
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno
+    .fnend

libc/arch-arm/syscalls/__open.S

@@ -1,15 +1,19 @@
 /* autogenerated by gensyscalls.py */
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
+#include <sys/linux-syscalls.h>
 
-ENTRY(__open)
-    mov     ip, r7
+    .text
+    .type __open, #function
+    .globl __open
+    .align 4
+    .fnstart
+
+__open:
+    .save   {r4, r7}
+    stmfd   sp!, {r4, r7}
     ldr     r7, =__NR_open
     swi     #0
-    mov     r7, ip
-    cmn     r0, #(MAX_ERRNO + 1)
-    bxls    lr
-    neg     r0, r0
-    b       __set_errno
-END(__open)
+    ldmfd   sp!, {r4, r7}
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno
+    .fnend

libc/arch-arm/syscalls/__openat.S

@@ -1,15 +1,19 @@
 /* autogenerated by gensyscalls.py */
-#include <asm/unistd.h>
-#include <linux/err.h>
-#include <machine/asm.h>
+#include <sys/linux-syscalls.h>
 
-ENTRY(__openat)
-    mov     ip, r7
+    .text
+    .type __openat, #function
+    .globl __openat
+    .align 4
+    .fnstart
+
+__openat:
+    .save   {r4, r7}
+    stmfd   sp!, {r4, r7}
     ldr     r7, =__NR_openat
     swi     #0
-    mov     r7, ip
-    cmn     r0, #(MAX_ERRNO + 1)
-    bxls    lr
-    neg     r0, r0
-    b       __set_errno
-END(__openat)
+    ldmfd   sp!, {r4, r7}
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno
+    .fnend