Merge "Fix potential race condition on CTS TC pthread_gettid_np" into marshmallow-cts-dev

Root cause:
If start_routine thread exits before pthread_gettid_np is invokded, the "tid" field
will be cleared so that pthread_gettid_np will get "0" (which is cleared by kernel, 
due to the flag "CLONE_CHILD_CLEARTID" is set while calling clone system call inside
pthread_create).

Proposed patch:
Use a mutex to guarantee pthread_gettid_np will be invoked and returned before the
start_routine exits

Signed-off-by: Junjie Hu <junjie.hu@mediatek.com>

Change-Id: I22411f1b0f7446d76a0373cef4ccec858fac7018

libc/Android.mk

@@ -63,14 +63,22 @@ libc_common_src_files := \
     stdio/sprintf.c \
     stdio/stdio.c \
     stdio/stdio_ext.cpp \
+    stdlib/atexit.c \
+    stdlib/exit.c \
 
 # Fortify implementations of libc functions.
 libc_common_src_files += \
     bionic/__FD_chk.cpp \
     bionic/__fgets_chk.cpp \
+    bionic/__memchr_chk.cpp \
     bionic/__memmove_chk.cpp \
+    bionic/__memrchr_chk.cpp \
     bionic/__poll_chk.cpp \
+    bionic/__pread64_chk.cpp \
+    bionic/__pread_chk.cpp \
     bionic/__read_chk.cpp \
+    bionic/__readlink_chk.cpp \
+    bionic/__readlinkat_chk.cpp \
     bionic/__recvfrom_chk.cpp \
     bionic/__stpcpy_chk.cpp \
     bionic/__stpncpy_chk.cpp \
@@ -104,6 +112,7 @@ libc_bionic_ndk_src_files := \
     bionic/clock_getcpuclockid.cpp \
     bionic/clock_nanosleep.cpp \
     bionic/clone.cpp \
+    bionic/close.cpp \
     bionic/__cmsg_nxthdr.cpp \
     bionic/connect.cpp \
     bionic/ctype.cpp \
@@ -120,8 +129,11 @@ libc_bionic_ndk_src_files := \
     bionic/fchmod.cpp \
     bionic/fchmodat.cpp \
     bionic/ffs.cpp \
+    bionic/fgetxattr.cpp \
     bionic/flockfile.cpp \
     bionic/fpclassify.cpp \
+    bionic/fsetxattr.cpp \
+    bionic/ftruncate.cpp \
     bionic/futimens.cpp \
     bionic/getcwd.cpp \
     bionic/gethostname.cpp \
@@ -476,11 +488,9 @@ libc_upstream_openbsd_ndk_src_files := \
     upstream-openbsd/lib/libc/stdio/wprintf.c \
     upstream-openbsd/lib/libc/stdio/wscanf.c \
     upstream-openbsd/lib/libc/stdio/wsetup.c \
-    upstream-openbsd/lib/libc/stdlib/atexit.c \
     upstream-openbsd/lib/libc/stdlib/atoi.c \
     upstream-openbsd/lib/libc/stdlib/atol.c \
     upstream-openbsd/lib/libc/stdlib/atoll.c \
-    upstream-openbsd/lib/libc/stdlib/exit.c \
     upstream-openbsd/lib/libc/stdlib/getenv.c \
     upstream-openbsd/lib/libc/stdlib/insque.c \
     upstream-openbsd/lib/libc/stdlib/lsearch.c \
@@ -539,14 +549,16 @@ libc_thread_atexit_impl_src_files := \
 libc_arch_static_src_files := \
     bionic/dl_iterate_phdr_static.cpp \
 
-# Various kinds of LP32 cruft.
+# Various kinds of cruft.
 # ========================================================
-libc_bionic_src_files_32 += \
+libc_common_src_files += \
+    bionic/ndk_cruft.cpp \
+
+libc_bionic_ndk_src_files_32 += \
     bionic/mmap.cpp \
 
 libc_common_src_files_32 += \
     bionic/legacy_32_bit_support.cpp \
-    bionic/ndk_cruft.cpp \
     bionic/time64.c \
 
 libc_netbsd_src_files_32 += \
@@ -820,12 +832,7 @@ include $(BUILD_STATIC_LIBRARY)
 include $(CLEAR_VARS)
 
 LOCAL_SRC_FILES := $(libc_upstream_openbsd_ndk_src_files)
-ifneq (,$(filter $(TARGET_ARCH),x86 x86_64))
-  # Clang has wrong long double size or LDBL_MANT_DIG, http://b/17163651.
-  LOCAL_CLANG := false
-else
-  LOCAL_CLANG := $(use_clang)
-endif
+LOCAL_CLANG := $(use_clang)
 
 LOCAL_CFLAGS := \
     $(libc_common_cflags) \
@@ -863,12 +870,7 @@ include $(BUILD_STATIC_LIBRARY)
 include $(CLEAR_VARS)
 
 LOCAL_SRC_FILES := $(libc_upstream_openbsd_src_files)
-ifneq (,$(filter $(TARGET_ARCH),x86 x86_64))
-  # Clang has wrong long double size or LDBL_MANT_DIG, http://b/17163651.
-  LOCAL_CLANG := false
-else
-  LOCAL_CLANG := $(use_clang)
-endif
+LOCAL_CLANG := $(use_clang)
 
 LOCAL_CFLAGS := \
     $(libc_common_cflags) \
@@ -908,12 +910,7 @@ include $(CLEAR_VARS)
 
 LOCAL_SRC_FILES_32 := $(libc_upstream_openbsd_gdtoa_src_files_32)
 LOCAL_SRC_FILES_64 := $(libc_upstream_openbsd_gdtoa_src_files_64)
-ifneq (,$(filter $(TARGET_ARCH),x86 x86_64))
-  # Clang has wrong long double size or LDBL_MANT_DIG, http://b/17163651.
-  LOCAL_CLANG := false
-else
-  LOCAL_CLANG := $(use_clang)
-endif
+LOCAL_CLANG := $(use_clang)
 
 LOCAL_CFLAGS := \
     $(libc_common_cflags) \
@@ -949,13 +946,6 @@ LOCAL_SRC_FILES := $(libc_bionic_src_files)
 LOCAL_CFLAGS := $(libc_common_cflags) \
     -Wframe-larger-than=2048 \
 
-# ssse3-strcmp-slm.S does not compile with Clang.
-LOCAL_CLANG_ASFLAGS_x86_64 += -no-integrated-as
-
-# memcpy.S, memchr.S, etc. do not compile with Clang.
-LOCAL_CLANG_ASFLAGS_arm += -no-integrated-as
-LOCAL_CLANG_ASFLAGS_arm64 += -no-integrated-as
-
 LOCAL_CONLYFLAGS := $(libc_common_conlyflags)
 LOCAL_CPPFLAGS := $(libc_common_cppflags) -Wold-style-cast
 LOCAL_C_INCLUDES := $(libc_common_c_includes) bionic/libstdc++/include
@@ -968,6 +958,7 @@ LOCAL_ADDRESS_SANITIZER := false
 LOCAL_NATIVE_COVERAGE := $(bionic_coverage)
 
 $(eval $(call patch-up-arch-specific-flags,LOCAL_CFLAGS,libc_common_cflags))
+$(eval $(call patch-up-arch-specific-flags,LOCAL_SRC_FILES,libc_bionic_src_files))
 include $(BUILD_STATIC_LIBRARY)
 
 
@@ -983,13 +974,6 @@ LOCAL_SRC_FILES := $(libc_bionic_ndk_src_files)
 LOCAL_CFLAGS := $(libc_common_cflags) \
     -Wframe-larger-than=2048 \
 
-# ssse3-strcmp-slm.S does not compile with Clang.
-LOCAL_CLANG_ASFLAGS_x86_64 += -no-integrated-as
-
-# memcpy.S, memchr.S, etc. do not compile with Clang.
-LOCAL_CLANG_ASFLAGS_arm += -no-integrated-as
-LOCAL_CLANG_ASFLAGS_arm64 += -no-integrated-as
-
 LOCAL_CONLYFLAGS := $(libc_common_conlyflags)
 LOCAL_CPPFLAGS := $(libc_common_cppflags) -Wold-style-cast
 LOCAL_C_INCLUDES := $(libc_common_c_includes) bionic/libstdc++/include
@@ -1002,12 +986,12 @@ LOCAL_ADDRESS_SANITIZER := false
 LOCAL_NATIVE_COVERAGE := $(bionic_coverage)
 
 $(eval $(call patch-up-arch-specific-flags,LOCAL_CFLAGS,libc_common_cflags))
-$(eval $(call patch-up-arch-specific-flags,LOCAL_SRC_FILES,libc_bionic_src_files))
+$(eval $(call patch-up-arch-specific-flags,LOCAL_SRC_FILES,libc_bionic_ndk_src_files))
 include $(BUILD_STATIC_LIBRARY)
 
 include $(CLEAR_VARS)
 LOCAL_SRC_FILES := $(libc_thread_atexit_impl_src_files)
-LOCAL_CFLAGS := $(libc_common_cflags) -fno-data-sections -Wframe-larger-than=2048
+LOCAL_CFLAGS := $(libc_common_cflags) -Wframe-larger-than=2048
 
 LOCAL_CONLYFLAGS := $(libc_common_conlyflags)
 LOCAL_CPPFLAGS := $(libc_common_cppflags) -Wold-style-cast
@@ -1038,13 +1022,6 @@ LOCAL_SRC_FILES := $(libc_pthread_src_files)
 LOCAL_CFLAGS := $(libc_common_cflags) \
     -Wframe-larger-than=2048 \
 
-# ssse3-strcmp-slm.S does not compile with Clang.
-LOCAL_CLANG_ASFLAGS_x86_64 += -no-integrated-as
-
-# memcpy.S, memchr.S, etc. do not compile with Clang.
-LOCAL_CLANG_ASFLAGS_arm += -no-integrated-as
-LOCAL_CLANG_ASFLAGS_arm64 += -no-integrated-as
-
 LOCAL_CONLYFLAGS := $(libc_common_conlyflags)
 LOCAL_CPPFLAGS := $(libc_common_cppflags) -Wold-style-cast
 LOCAL_C_INCLUDES := $(libc_common_c_includes)
@@ -1232,10 +1209,6 @@ LOCAL_WHOLE_STATIC_LIBRARIES := \
 
 LOCAL_WHOLE_STATIC_LIBRARIES_arm := libc_aeabi
 
-ifneq ($(MALLOC_IMPL),dlmalloc)
-LOCAL_WHOLE_STATIC_LIBRARIES += libjemalloc
-endif
-
 LOCAL_CXX_STL := none
 LOCAL_SYSTEM_SHARED_LIBRARIES :=
 
@@ -1328,6 +1301,11 @@ LOCAL_MODULE := libc
 LOCAL_CLANG := $(use_clang)
 LOCAL_ADDITIONAL_DEPENDENCIES := $(libc_common_additional_dependencies)
 LOCAL_WHOLE_STATIC_LIBRARIES := libc_common
+
+ifneq ($(MALLOC_IMPL),dlmalloc)
+LOCAL_WHOLE_STATIC_LIBRARIES += libjemalloc
+endif
+
 LOCAL_CXX_STL := none
 LOCAL_SYSTEM_SHARED_LIBRARIES :=
 LOCAL_ADDRESS_SANITIZER := false
@@ -1349,22 +1327,28 @@ LOCAL_CPPFLAGS := $(libc_common_cppflags)
 
 LOCAL_C_INCLUDES := $(libc_common_c_includes)
 LOCAL_SRC_FILES := \
+    arch-common/bionic/crtbegin_so.c \
+    arch-common/bionic/crtbrand.S \
     $(libc_arch_dynamic_src_files) \
     bionic/malloc_debug_common.cpp \
     bionic/libc_init_dynamic.cpp \
     bionic/NetdClient.cpp \
+    arch-common/bionic/crtend_so.S \
 
 LOCAL_MODULE := libc
 LOCAL_CLANG := $(use_clang)
 LOCAL_REQUIRED_MODULES := tzdata
 LOCAL_ADDITIONAL_DEPENDENCIES := \
     $(libc_common_additional_dependencies) \
-    $(LOCAL_PATH)/version_script.txt \
+    $(LOCAL_PATH)/libc.map \
 
 # Leave the symbols in the shared library so that stack unwinders can produce
 # meaningful name resolution.
 LOCAL_STRIP_MODULE := keep_symbols
 
+# Do not pack libc.so relocations; see http://b/20645321 for details.
+LOCAL_PACK_MODULE_RELOCATIONS := false
+
 # WARNING: The only library libc.so should depend on is libdl.so!  If you add other libraries,
 # make sure to add -Wl,--exclude-libs=libgcc.a to the LOCAL_LDFLAGS for those libraries.  This
 # ensures that symbols that are pulled into those new libraries from libgcc.a are not declared
@@ -1375,32 +1359,37 @@ LOCAL_STRIP_MODULE := keep_symbols
 
 LOCAL_SHARED_LIBRARIES := libdl
 LOCAL_WHOLE_STATIC_LIBRARIES := libc_common
+
+ifneq ($(MALLOC_IMPL),dlmalloc)
+LOCAL_WHOLE_STATIC_LIBRARIES += libjemalloc
+endif
+
 LOCAL_CXX_STL := none
 LOCAL_SYSTEM_SHARED_LIBRARIES :=
 
 # Don't re-export new/delete and friends, even if the compiler really wants to.
-LOCAL_LDFLAGS := -Wl,--version-script,$(LOCAL_PATH)/version_script.txt
+LOCAL_LDFLAGS := -Wl,--version-script,$(LOCAL_PATH)/libc.map
 
 # We'd really like to do this for all architectures, but since this wasn't done
 # before, these symbols must continue to be exported on LP32 for binary
 # compatibility.
-# TODO: disabled for http://b/20065774.
-#LOCAL_LDFLAGS_64 := -Wl,--exclude-libs,libgcc.a
+LOCAL_LDFLAGS_64 := -Wl,--exclude-libs,libgcc.a
 
 # TODO: This is to work around b/19059885. Remove after root cause is fixed
-LOCAL_LDFLAGS_arm := -Wl,--hash-style=sysv
+LOCAL_LDFLAGS_arm := -Wl,--hash-style=both
+LOCAL_LDFLAGS_x86 := -Wl,--hash-style=both
 
 $(eval $(call patch-up-arch-specific-flags,LOCAL_CFLAGS,libc_common_cflags))
 $(eval $(call patch-up-arch-specific-flags,LOCAL_SRC_FILES,libc_arch_dynamic_src_files))
+
+LOCAL_NO_CRT := true
+LOCAL_ASFLAGS += $(libc_crt_target_cflags)
+
 # special for arm
-LOCAL_NO_CRT_arm := true
 LOCAL_CFLAGS_arm += -DCRT_LEGACY_WORKAROUND
-LOCAL_ASFLAGS_arm += $(libc_crt_target_cflags)
 LOCAL_SRC_FILES_arm += \
-    arch-common/bionic/crtbegin_so.c \
-    arch-common/bionic/crtbrand.S \
-    arch-arm/bionic/atexit_legacy.c \
-    arch-common/bionic/crtend_so.S
+    arch-arm/bionic/atexit_legacy.c
+
 LOCAL_ADDRESS_SANITIZER := false
 LOCAL_NATIVE_COVERAGE := $(bionic_coverage)
 
@@ -1518,7 +1507,8 @@ LOCAL_CFLAGS := $(libc_common_cflags)
 LOCAL_CPPFLAGS := $(libc_common_cppflags)
 
 # TODO: This is to work around b/19059885. Remove after root cause is fixed
-LOCAL_LDFLAGS_arm := -Wl,--hash-style=sysv
+LOCAL_LDFLAGS_arm := -Wl,--hash-style=both
+LOCAL_LDFLAGS_x86 := -Wl,--hash-style=both
 
 LOCAL_SRC_FILES := $(libstdcxx_common_src_files)
 LOCAL_MODULE:= libstdc++

libc/NOTICE

@@ -307,34 +307,6 @@ SUCH DAMAGE.
 
 -------------------------------------------------------------------
 
-Copyright (C) 2008-2010 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.
-
--------------------------------------------------------------------
-
 Copyright (C) 2009 The Android Open Source Project
 
 Licensed under the Apache License, Version 2.0 (the "License");
@@ -454,22 +426,6 @@ Android adaptation and tweak by Jim Huang <jserv@0xlab.org>.
 
 -------------------------------------------------------------------
 
-Copyright (C) 2011 The Android Open Source Project
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-     http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-
--------------------------------------------------------------------
-
 Copyright (C) 2011 The Android Open Source Project
 All rights reserved.
 
@@ -688,6 +644,50 @@ SUCH DAMAGE.
 
 -------------------------------------------------------------------
 
+Copyright (C) 2015 The Android Open Source Project
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+-------------------------------------------------------------------
+
+Copyright (C) 2015 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) 1980, 1983, 1988, 1993
    The Regents of the University of California.  All rights reserved.
 
@@ -2550,33 +2550,6 @@ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 -------------------------------------------------------------------
 
-Copyright (c) 1995, 1996 Carnegie-Mellon University.
-All rights reserved.
-
-Author: Chris G. Demetriou
-
-Permission to use, copy, modify and distribute this software and
-its documentation is hereby granted, provided that both the copyright
-notice and this permission notice appear in all copies of the
-software, derivative works or modified versions, and any portions
-thereof, and that both notices appear in supporting documentation.
-
-CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
-CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
-FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
-
-Carnegie Mellon requests users of this software to return to
-
- Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
- School of Computer Science
- Carnegie Mellon University
- Pittsburgh PA 15213-3890
-
-any improvements or extensions that they make and grant Carnegie the
-rights to redistribute these changes.
-
--------------------------------------------------------------------
-
 Copyright (c) 1996 by Internet Software Consortium.
 
 Permission to use, copy, modify, and distribute this software for any
@@ -3795,6 +3768,22 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 -------------------------------------------------------------------
 
+Copyright (c) 2007 Todd C. Miller <Todd.Miller@courtesan.com>
+
+Permission to use, copy, modify, and distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+-------------------------------------------------------------------
+
 Copyright (c) 2007-2008  Michael G Schwern
 
 This software originally derived from Paul Sheer's pivotal_gmtime_r.c.
@@ -4733,31 +4722,6 @@ THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 -------------------------------------------------------------------
 
-Copyright 2000 David E. O'Brien, John D. Polstra.
-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.
-
-THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 2008  Android Open Source Project (source port randomization)
 Copyright (c) 1985, 1989, 1993
    The Regents of the University of California.  All rights reserved.

libc/SYSCALLS.TXT

@@ -95,7 +95,7 @@ ssize_t     pread64(int, void*, size_t, off64_t) arm,mips,x86
 ssize_t     pread64|pread(int, void*, size_t, off_t) arm64,mips64,x86_64
 ssize_t     pwrite64(int, void*, size_t, off64_t) arm,mips,x86
 ssize_t     pwrite64|pwrite(int, void*, size_t, off_t) arm64,mips64,x86_64
-int         close(int)                      all
+int         ___close:close(int)  all
 pid_t       __getpid:getpid()  all
 int         munmap(void*, size_t)  all
 void*       mremap(void*, size_t, size_t, unsigned long)  all
@@ -122,8 +122,8 @@ int         fdatasync(int) all
 int         fchown:fchown32(int, uid_t, gid_t)  arm,x86
 int         fchown:fchown(int, uid_t, gid_t)    arm64,mips,mips64,x86_64
 void        sync(void)  all
-int         fsetxattr(int, const char*, const void*, size_t, int) all
-ssize_t     fgetxattr(int, const char*, void*, size_t) all
+int         ___fsetxattr:fsetxattr(int, const char*, const void*, size_t, int) all
+ssize_t     ___fgetxattr:fgetxattr(int, const char*, void*, size_t) all
 ssize_t     flistxattr(int, char*, size_t) all
 int         fremovexattr(int, const char*) all
 
@@ -151,7 +151,6 @@ int utimensat(int, const char*, const struct timespec times[2], int)  all
 off_t lseek(int, off_t, int) arm,mips,x86
 int __llseek:_llseek(int, unsigned long, unsigned long, off64_t*, int) arm,mips,x86
 off_t lseek|lseek64(int, off_t, int) arm64,mips64,x86_64
-int ftruncate(int, off_t) arm,mips,x86
 int ftruncate64(int, off64_t) arm,mips,x86
 int ftruncate|ftruncate64(int, off_t) arm64,mips64,x86_64
 ssize_t sendfile(int out_fd, int in_fd, off_t* offset, size_t count) arm,mips,x86
@@ -204,7 +203,7 @@ clock_t       times(struct tms*)       all
 int           nanosleep(const struct timespec*, struct timespec*)   all
 int           clock_settime(clockid_t, const struct timespec*)  all
 int           clock_getres(clockid_t, struct timespec*)   all
-int           __clock_nanosleep:clock_nanosleep(clockid_t, int, const struct timespec*, struct timespec*)  all
+int           ___clock_nanosleep:clock_nanosleep(clockid_t, int, const struct timespec*, struct timespec*)  all
 int           getitimer(int, const struct itimerval*)   all
 int           setitimer(int, const struct itimerval*, struct itimerval*)  all
 int           __timer_create:timer_create(clockid_t clockid, struct sigevent* evp, __kernel_timer_t* timerid)    all
@@ -223,7 +222,7 @@ int     __rt_sigpending:rt_sigpending(sigset_t*, size_t)  all
 int     __rt_sigprocmask:rt_sigprocmask(int, const sigset_t*, sigset_t*, size_t)  all
 int     __rt_sigsuspend:rt_sigsuspend(const sigset_t*, size_t)  all
 int     __rt_sigtimedwait:rt_sigtimedwait(const sigset_t*, struct siginfo_t*, struct timespec_t*, size_t)  all
-int     __rt_sigqueueinfo:rt_sigqueueinfo(pid_t, int, siginfo_t*)  all
+int     ___rt_sigqueueinfo:rt_sigqueueinfo(pid_t, int, siginfo_t*)  all
 int     __signalfd4:signalfd4(int, const sigset_t*, size_t, int)  all
 
 # sockets
@@ -309,6 +308,9 @@ int inotify_rm_watch(int, unsigned int)  all
 int __pselect6:pselect6(int, fd_set*, fd_set*, fd_set*, timespec*, void*)  all
 int __ppoll:ppoll(pollfd*, unsigned int, timespec*, const sigset_t*, size_t)  all
 
+ssize_t process_vm_readv(pid_t, const struct iovec*, unsigned long, const struct iovec*, unsigned long, unsigned long)  all
+ssize_t process_vm_writev(pid_t, const struct iovec*, unsigned long, const struct iovec*, unsigned long, unsigned long)  all
+
 int __set_tid_address:set_tid_address(int*)  all
 
 int setfsgid(gid_t)  all

libc/arch-arm/arm.mk

@@ -39,7 +39,6 @@ libc_bionic_src_files_arm += \
     arch-arm/bionic/__bionic_clone.S \
     arch-arm/bionic/_exit_with_stack_teardown.S \
     arch-arm/bionic/libgcc_compat.c \
-    arch-arm/bionic/libgcc_protect_unwind.c \
     arch-arm/bionic/__restore.S \
     arch-arm/bionic/setjmp.S \
     arch-arm/bionic/syscall.S \

libc/arch-arm/bionic/__bionic_clone.S

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008-2010 The Android Open Source Project
+ * Copyright (C) 2008 The Android Open Source Project
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without

libc/arch-arm/bionic/libgcc_protect_unwind.c

@@ -1,93 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-// TODO: This file should go away once unwinder migration to libc++.so is complete.
-
-extern char _Unwind_Backtrace __attribute((visibility("protected")));
-extern char __gnu_Unwind_Find_exidx __attribute((visibility("protected")));
-extern char __gnu_Unwind_Restore_VFP_D __attribute((visibility("protected")));
-extern char __gnu_Unwind_Restore_VFP __attribute((visibility("protected")));
-extern char __gnu_Unwind_Restore_VFP_D_16_to_31 __attribute((visibility("protected")));
-extern char __gnu_Unwind_Restore_WMMXD __attribute((visibility("protected")));
-extern char __gnu_Unwind_Restore_WMMXC __attribute((visibility("protected")));
-extern char _Unwind_GetCFA __attribute((visibility("protected")));
-extern char __gnu_Unwind_RaiseException __attribute((visibility("protected")));
-extern char __gnu_Unwind_ForcedUnwind __attribute((visibility("protected")));
-extern char __gnu_Unwind_Resume __attribute((visibility("protected")));
-extern char __gnu_Unwind_Resume_or_Rethrow __attribute((visibility("protected")));
-extern char _Unwind_Complete __attribute((visibility("protected")));
-extern char _Unwind_DeleteException __attribute((visibility("protected")));
-extern char _Unwind_VRS_Get __attribute((visibility("protected")));
-extern char _Unwind_VRS_Set __attribute((visibility("protected")));
-extern char __gnu_Unwind_Backtrace __attribute((visibility("protected")));
-extern char _Unwind_VRS_Pop __attribute((visibility("protected")));
-extern char __gnu_Unwind_Save_VFP_D __attribute((visibility("protected")));
-extern char __gnu_Unwind_Save_VFP __attribute((visibility("protected")));
-extern char __gnu_Unwind_Save_VFP_D_16_to_31 __attribute((visibility("protected")));
-extern char __gnu_Unwind_Save_WMMXD __attribute((visibility("protected")));
-extern char __gnu_Unwind_Save_WMMXC __attribute((visibility("protected")));
-extern char ___Unwind_RaiseException __attribute((visibility("protected")));
-extern char _Unwind_RaiseException __attribute((visibility("protected")));
-extern char ___Unwind_Resume __attribute((visibility("protected")));
-extern char _Unwind_Resume __attribute((visibility("protected")));
-extern char ___Unwind_Resume_or_Rethrow __attribute((visibility("protected")));
-extern char _Unwind_Resume_or_Rethrow __attribute((visibility("protected")));
-extern char ___Unwind_ForcedUnwind __attribute((visibility("protected")));
-extern char _Unwind_ForcedUnwind __attribute((visibility("protected")));
-extern char ___Unwind_Backtrace __attribute((visibility("protected")));
-extern char _Unwind_GetRegionStart __attribute((visibility("protected")));
-extern char _Unwind_GetLanguageSpecificData __attribute((visibility("protected")));
-extern char _Unwind_GetDataRelBase __attribute((visibility("protected")));
-extern char _Unwind_GetTextRelBase __attribute((visibility("protected")));
-
-void* __bionic_libgcc_unwind_symbols[] = {
-    &_Unwind_Backtrace,
-    &__gnu_Unwind_Find_exidx,
-    &__gnu_Unwind_Restore_VFP_D,
-    &__gnu_Unwind_Restore_VFP,
-    &__gnu_Unwind_Restore_VFP_D_16_to_31,
-    &__gnu_Unwind_Restore_WMMXD,
-    &__gnu_Unwind_Restore_WMMXC,
-    &_Unwind_GetCFA,
-    &__gnu_Unwind_RaiseException,
-    &__gnu_Unwind_ForcedUnwind,
-    &__gnu_Unwind_Resume,
-    &__gnu_Unwind_Resume_or_Rethrow,
-    &_Unwind_Complete,
-    &_Unwind_DeleteException,
-    &_Unwind_VRS_Get,
-    &_Unwind_VRS_Set,
-    &__gnu_Unwind_Backtrace,
-    &_Unwind_VRS_Pop,
-    &__gnu_Unwind_Save_VFP_D,
-    &__gnu_Unwind_Save_VFP,
-    &__gnu_Unwind_Save_VFP_D_16_to_31,
-    &__gnu_Unwind_Save_WMMXD,
-    &__gnu_Unwind_Save_WMMXC,
-    &___Unwind_RaiseException,
-    &_Unwind_RaiseException,
-    &___Unwind_Resume,
-    &_Unwind_Resume,
-    &___Unwind_Resume_or_Rethrow,
-    &_Unwind_Resume_or_Rethrow,
-    &___Unwind_ForcedUnwind,
-    &_Unwind_ForcedUnwind,
-    &___Unwind_Backtrace,
-    &_Unwind_GetRegionStart,
-    &_Unwind_GetLanguageSpecificData,
-    &_Unwind_GetDataRelBase,
-    &_Unwind_GetTextRelBase,
-};

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

@@ -1,5 +1,4 @@
 libc_bionic_src_files_arm += \
-    arch-arm/generic/bionic/memcmp.S \
     arch-arm/cortex-a15/bionic/memcpy.S \
     arch-arm/cortex-a15/bionic/memset.S \
     arch-arm/cortex-a15/bionic/stpcpy.S \
@@ -10,5 +9,8 @@ libc_bionic_src_files_arm += \
     arch-arm/cortex-a15/bionic/__strcpy_chk.S \
     arch-arm/cortex-a15/bionic/strlen.S \
 
-libc_openbsd_src_files_arm += \
-    upstream-openbsd/lib/libc/string/memmove.c \
+libc_bionic_src_files_arm += \
+    arch-arm/generic/bionic/memcmp.S \
+
+libc_bionic_src_files_arm += \
+    arch-arm/denver/bionic/memmove.S \

libc/arch-arm/cortex-a53/cortex-a53.mk

@@ -0,0 +1 @@
+include bionic/libc/arch-arm/cortex-a7/cortex-a7.mk

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

@@ -35,6 +35,7 @@
  */
 
     .fpu    neon
+    .syntax unified
 
 ENTRY(__memset_chk)
         cmp         r2, r3
@@ -100,9 +101,9 @@ ENTRY(memset)
 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
+        strbmi      r1, [r0], #1
+        strbcs      r1, [r0], #1
+        strbcs      r1, [r0], #1
         ldmfd       sp!, {r0}
         bx          lr
 END(memset)
@@ -131,11 +132,11 @@ ENTRY_PRIVATE(__memset_large_copy)
         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
+        strbcs      r1, [r0], #1    /* can't use strh (alignment unknown) */
+        strbcs      r1, [r0], #1
+        strbmi      r1, [r0], #1
         subs        r2, r2, r3
-        ldmlsfd     sp!, {r0, r4-r7, lr}   /* return */
+        popls       {r0, r4-r7, lr}   /* return */
         bxls        lr
 
         /* align the destination to a cache-line */
@@ -155,9 +156,9 @@ ENTRY_PRIVATE(__memset_large_copy)
 
         /* 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}
+        stmcs       r0!, {r1, lr}
+        stmcs       r0!, {r1, lr}
+        stmmi       r0!, {r1, lr}
         movs        r3, r3, lsl #2
         strcs       r1, [r0], #4
 
@@ -172,13 +173,13 @@ ENTRY_PRIVATE(__memset_large_copy)
 
         /* conditionally stores 0 to 31 bytes */
         movs        r2, r2, lsl #28
-        stmcsia     r0!, {r1,r3,r12,lr}
-        stmmiia     r0!, {r1, lr}
+        stmcs       r0!, {r1,r3,r12,lr}
+        stmmi       r0!, {r1, lr}
         movs        r2, r2, lsl #2
         strcs       r1, [r0], #4
-        strmih      r1, [r0], #2
+        strhmi      r1, [r0], #2
         movs        r2, r2, lsl #2
-        strcsb      r1, [r0]
+        strbcs      r1, [r0]
         ldmfd       sp!, {r0, r4-r7, lr}
         bx          lr
 END(__memset_large_copy)

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

@@ -1,5 +1,4 @@
 libc_bionic_src_files_arm += \
-    arch-arm/generic/bionic/memcmp.S \
     arch-arm/cortex-a9/bionic/memcpy.S \
     arch-arm/cortex-a9/bionic/memset.S \
     arch-arm/cortex-a9/bionic/stpcpy.S \
@@ -10,5 +9,8 @@ libc_bionic_src_files_arm += \
     arch-arm/cortex-a9/bionic/__strcpy_chk.S \
     arch-arm/cortex-a9/bionic/strlen.S \
 
-libc_openbsd_src_files_arm += \
-    upstream-openbsd/lib/libc/string/memmove.c \
+libc_bionic_src_files_arm += \
+    arch-arm/generic/bionic/memcmp.S \
+
+libc_bionic_src_files_arm += \
+    arch-arm/denver/bionic/memmove.S \

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

@@ -40,6 +40,8 @@
  * Optimized memcmp() for Cortex-A9.
  */
 
+.syntax unified
+
 ENTRY(memcmp)
         pld         [r0, #(CACHE_LINE_SIZE * 0)]
         pld         [r0, #(CACHE_LINE_SIZE * 1)]
@@ -161,25 +163,25 @@ ENTRY(memcmp)
         eors        r0, r0, ip
         ldreq       r0, [r4], #4
         ldreq       ip, [r1, #4]!
-        eoreqs      r0, r0, lr
+        eorseq      r0, r0, lr
         ldreq       r0, [r4], #4
         ldreq       lr, [r1, #4]!
-        eoreqs      r0, r0, ip
+        eorseq      r0, r0, ip
         ldreq       r0, [r4], #4
         ldreq       ip, [r1, #4]!
-        eoreqs      r0, r0, lr
+        eorseq      r0, r0, lr
         ldreq       r0, [r4], #4
         ldreq       lr, [r1, #4]!
-        eoreqs      r0, r0, ip
+        eorseq      r0, r0, ip
         ldreq       r0, [r4], #4
         ldreq       ip, [r1, #4]!
-        eoreqs      r0, r0, lr
+        eorseq      r0, r0, lr
         ldreq       r0, [r4], #4
         ldreq       lr, [r1, #4]!
-        eoreqs      r0, r0, ip
+        eorseq      r0, r0, ip
         ldreq       r0, [r4], #4
         ldreq       ip, [r1, #4]!
-        eoreqs      r0, r0, lr
+        eorseq      r0, r0, lr
         bne         2f
         subs        r2, r2, #32
         bhs         0b
@@ -263,17 +265,17 @@ ENTRY(memcmp)
         ldreq       lr, [r1], #4
         ldreq       r0, [r4], #4
         orreq       ip, ip, lr, lsl #16
-        eoreqs      r0, r0, ip
+        eorseq      r0, r0, ip
         moveq       ip, lr, lsr #16
         ldreq       lr, [r1], #4
         ldreq       r0, [r4], #4
         orreq       ip, ip, lr, lsl #16
-        eoreqs      r0, r0, ip
+        eorseq      r0, r0, ip
         moveq       ip, lr, lsr #16
         ldreq       lr, [r1], #4
         ldreq       r0, [r4], #4
         orreq       ip, ip, lr, lsl #16
-        eoreqs      r0, r0, ip
+        eorseq      r0, r0, ip
         bne         7f
         subs        r2, r2, #16
         bhs         6b
@@ -317,7 +319,7 @@ ENTRY(memcmp)
         ldreq       r7, [r1], #4
         ldreq       r0, [r4], #4
         orreq       ip, ip, r7, lsl r6
-        eoreqs      r0, r0, ip
+        eorseq      r0, r0, ip
         bne         7f
         subs        r2, r2, #8
         bhs         6b

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

@@ -37,6 +37,8 @@
          * so we have to preserve R0.
          */
 
+         .syntax unified
+
 ENTRY(__memcpy_chk)
         cmp         r2, r3
         bhi         __memcpy_chk_fail
@@ -81,12 +83,12 @@ ENTRY(memcpy)
          */
         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
+        ldrbmi      r3, [r1], #1
+        ldrbcs      r4, [r1], #1
+        ldrbcs      r12,[r1], #1
+        strbmi      r3, [r0], #1
+        strbcs      r4, [r0], #1
+        strbcs      r12,[r0], #1
 
 .Lsrc_aligned:
 
@@ -109,10 +111,10 @@ ENTRY(memcpy)
 
         /* 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}
+        ldmcs       r1!, {r4, r5, r6, r7}   /* 16 bytes */
+        ldmmi       r1!, {r8, r9}           /*  8 bytes */
+        stmcs       r0!, {r4, r5, r6, r7}
+        stmmi       r0!, {r8, r9}
         tst         r3, #0x4
         ldrne       r10,[r1], #4            /*  4 bytes */
         strne       r10,[r0], #4
@@ -177,18 +179,18 @@ ENTRY(memcpy)
 
         /* 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}
+        ldmcs       r1!, {r4, r5, r6, r7}   /* 16 bytes */
+        ldmmi       r1!, {r8, r9}           /*  8 bytes */
+        stmcs       r0!, {r4, r5, r6, r7}
+        stmmi       r0!, {r8, r9}
         movs        r12, r2, lsl #30
         ldrcs       r3, [r1], #4            /*  4 bytes */
-        ldrmih      r4, [r1], #2            /*  2 bytes */
+        ldrhmi      r4, [r1], #2            /*  2 bytes */
         strcs       r3, [r0], #4
-        strmih      r4, [r0], #2
+        strhmi      r4, [r0], #2
         tst         r2, #0x1
-        ldrneb      r3, [r1]                /*  last byte  */
-        strneb      r3, [r0]
+        ldrbne      r3, [r1]                /*  last byte  */
+        strbne      r3, [r0]
 
         /* we're done! restore everything and return */
 1:      ldmfd       sp!, {r5-r11}
@@ -228,11 +230,11 @@ ENTRY(memcpy)
          * becomes aligned to 32 bits (r5 = nb of words to copy for alignment)
          */
         movs        r5, r5, lsl #31
-        strmib      r3, [r0], #1
+        strbmi      r3, [r0], #1
         movmi       r3, r3, lsr #8
-        strcsb      r3, [r0], #1
+        strbcs      r3, [r0], #1
         movcs       r3, r3, lsr #8
-        strcsb      r3, [r0], #1
+        strbcs      r3, [r0], #1
         movcs       r3, r3, lsr #8
 
         cmp         r2, #4
@@ -363,23 +365,23 @@ ENTRY(memcpy)
 .Lpartial_word_tail:
         /* we have a partial word in the input buffer */
         movs        r5, lr, lsl #(31-3)
-        strmib      r3, [r0], #1
+        strbmi      r3, [r0], #1
         movmi       r3, r3, lsr #8
-        strcsb      r3, [r0], #1
+        strbcs      r3, [r0], #1
         movcs       r3, r3, lsr #8
-        strcsb      r3, [r0], #1
+        strbcs      r3, [r0], #1
 
         /* Refill spilled registers from the stack. Don't update sp. */
         ldmfd       sp, {r5-r11}
 
 .Lcopy_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]
+        ldrbmi      r2, [r1], #1
+        ldrbcs      r3, [r1], #1
+        ldrbcs      r12,[r1]
+        strbmi      r2, [r0], #1
+        strbcs      r3, [r0], #1
+        strbcs      r12,[r0]
 
         /* we're done! restore sp and spilled registers and return */
         add         sp,  sp, #28

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

@@ -35,6 +35,8 @@
          * memset() returns its first argument.
          */
 
+         .syntax unified
+
 ENTRY(__memset_chk)
         cmp         r2, r3
         bls         done
@@ -76,11 +78,11 @@ ENTRY(memset)
         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
+        strbcs      r1, [r0], #1    /* can't use strh (alignment unknown) */
+        strbcs      r1, [r0], #1
+        strbmi      r1, [r0], #1
         subs        r2, r2, r3
-        ldmlsfd     sp!, {r0, r4-r7, lr}    /* return */
+        popls       {r0, r4-r7, lr}    /* return */
         bxls        lr
 
         /* align the destination to a cache-line */
@@ -100,9 +102,9 @@ ENTRY(memset)
 
         /* 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}
+        stmcs       r0!, {r1, lr}
+        stmcs       r0!, {r1, lr}
+        stmmi       r0!, {r1, lr}
         movs        r3, r3, lsl #2
         strcs       r1, [r0], #4
 
@@ -117,13 +119,13 @@ ENTRY(memset)
 
         /* conditionally stores 0 to 31 bytes */
         movs        r2, r2, lsl #28
-        stmcsia     r0!, {r1,r3,r12,lr}
-        stmmiia     r0!, {r1, lr}
+        stmcs       r0!, {r1,r3,r12,lr}
+        stmmi       r0!, {r1, lr}
         movs        r2, r2, lsl #2
         strcs       r1, [r0], #4
-        strmih      r1, [r0], #2
+        strhmi      r1, [r0], #2
         movs        r2, r2, lsl #2
-        strcsb      r1, [r0]
+        strbcs      r1, [r0]
         ldmfd       sp!, {r0, r4-r7, lr}
         bx          lr
 END(memset)

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

@@ -32,6 +32,8 @@
 #include <machine/cpu-features.h>
 #include <private/bionic_asm.h>
 
+.syntax unified
+
 ENTRY(strcpy)
 	pld	[r1, #0]
 	eor	r2, r0, r1
@@ -108,15 +110,15 @@ ENTRY(strcpy)
 #ifdef __ARMEB__
 	tst	r2, #0xff00
 	iteet	ne
-	strneh	r2, [ip], #2
+	strhne	r2, [ip], #2
 	lsreq	r2, r2, #8
-	streqb	r2, [ip]
+	strbeq	r2, [ip]
 	tstne	r2, #0xff
 #else
 	tst	r2, #0xff
 	itet	ne
-	strneh	r2, [ip], #2
-	streqb	r2, [ip]
+	strhne	r2, [ip], #2
+	strbeq	r2, [ip]
 	tstne	r2, #0xff00
 #endif
 	bne	5b

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

@@ -37,6 +37,7 @@
  */
 
     .fpu    neon
+    .syntax unified
 
 ENTRY(__memset_chk)
         cmp         r2, r3
@@ -98,9 +99,9 @@ ENTRY(memset)
 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
+        strbmi      r1, [r0], #1
+        strbcs      r1, [r0], #1
+        strbcs      r1, [r0], #1
         ldmfd       sp!, {r0}
         bx          lr
 END(memset)

libc/arch-arm/krait/krait.mk

@@ -1,5 +1,4 @@
 libc_bionic_src_files_arm += \
-    arch-arm/generic/bionic/memcmp.S \
     arch-arm/krait/bionic/memcpy.S \
     arch-arm/krait/bionic/memset.S \
     arch-arm/krait/bionic/strcmp.S \
@@ -13,5 +12,8 @@ libc_bionic_src_files_arm += \
     arch-arm/cortex-a15/bionic/strcpy.S \
     arch-arm/cortex-a15/bionic/strlen.S \
 
-libc_openbsd_src_files_arm += \
-    upstream-openbsd/lib/libc/string/memmove.c \
+libc_bionic_src_files_arm += \
+    arch-arm/generic/bionic/memcmp.S \
+
+libc_bionic_src_files_arm += \
+    arch-arm/denver/bionic/memmove.S \

libc/arch-arm/syscalls/___clock_nanosleep.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(__clock_nanosleep)
+ENTRY(___clock_nanosleep)
     mov     ip, r7
     ldr     r7, =__NR_clock_nanosleep
     swi     #0
@@ -11,4 +11,5 @@ ENTRY(__clock_nanosleep)
     bxls    lr
     neg     r0, r0
     b       __set_errno_internal
-END(__clock_nanosleep)
+END(___clock_nanosleep)
+.hidden ___clock_nanosleep

libc/arch-arm/syscalls/___close.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(close)
+ENTRY(___close)
     mov     ip, r7
     ldr     r7, =__NR_close
     swi     #0
@@ -11,4 +11,5 @@ ENTRY(close)
     bxls    lr
     neg     r0, r0
     b       __set_errno_internal
-END(close)
+END(___close)
+.hidden ___close

libc/arch-arm/syscalls/___fgetxattr.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fgetxattr)
+ENTRY(___fgetxattr)
     mov     ip, r7
     ldr     r7, =__NR_fgetxattr
     swi     #0
@@ -11,4 +11,5 @@ ENTRY(fgetxattr)
     bxls    lr
     neg     r0, r0
     b       __set_errno_internal
-END(fgetxattr)
+END(___fgetxattr)
+.hidden ___fgetxattr

libc/arch-arm/syscalls/___fsetxattr.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fsetxattr)
+ENTRY(___fsetxattr)
     mov     ip, sp
     stmfd   sp!, {r4, r5, r6, r7}
     .cfi_def_cfa_offset 16
@@ -19,4 +19,5 @@ ENTRY(fsetxattr)
     bxls    lr
     neg     r0, r0
     b       __set_errno_internal
-END(fsetxattr)
+END(___fsetxattr)
+.hidden ___fsetxattr

libc/arch-arm/syscalls/___rt_sigqueueinfo.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(__rt_sigqueueinfo)
+ENTRY(___rt_sigqueueinfo)
     mov     ip, r7
     ldr     r7, =__NR_rt_sigqueueinfo
     swi     #0
@@ -11,4 +11,5 @@ ENTRY(__rt_sigqueueinfo)
     bxls    lr
     neg     r0, r0
     b       __set_errno_internal
-END(__rt_sigqueueinfo)
+END(___rt_sigqueueinfo)
+.hidden ___rt_sigqueueinfo

libc/arch-arm/syscalls/ftruncate.S

@@ -1,14 +0,0 @@
-/* Generated by gensyscalls.py. Do not edit. */
-
-#include <private/bionic_asm.h>
-
-ENTRY(ftruncate)
-    mov     ip, r7
-    ldr     r7, =__NR_ftruncate
-    swi     #0
-    mov     r7, ip
-    cmn     r0, #(MAX_ERRNO + 1)
-    bxls    lr
-    neg     r0, r0
-    b       __set_errno_internal
-END(ftruncate)

libc/arch-arm/syscalls/process_vm_readv.S

@@ -0,0 +1,22 @@
+/* Generated by gensyscalls.py. Do not edit. */
+
+#include <private/bionic_asm.h>
+
+ENTRY(process_vm_readv)
+    mov     ip, sp
+    stmfd   sp!, {r4, r5, r6, r7}
+    .cfi_def_cfa_offset 16
+    .cfi_rel_offset r4, 0
+    .cfi_rel_offset r5, 4
+    .cfi_rel_offset r6, 8
+    .cfi_rel_offset r7, 12
+    ldmfd   ip, {r4, r5, r6}
+    ldr     r7, =__NR_process_vm_readv
+    swi     #0
+    ldmfd   sp!, {r4, r5, r6, r7}
+    .cfi_def_cfa_offset 0
+    cmn     r0, #(MAX_ERRNO + 1)
+    bxls    lr
+    neg     r0, r0
+    b       __set_errno_internal
+END(process_vm_readv)

libc/arch-arm/syscalls/process_vm_writev.S

@@ -0,0 +1,22 @@
+/* Generated by gensyscalls.py. Do not edit. */
+
+#include <private/bionic_asm.h>
+
+ENTRY(process_vm_writev)
+    mov     ip, sp
+    stmfd   sp!, {r4, r5, r6, r7}
+    .cfi_def_cfa_offset 16
+    .cfi_rel_offset r4, 0
+    .cfi_rel_offset r5, 4
+    .cfi_rel_offset r6, 8
+    .cfi_rel_offset r7, 12
+    ldmfd   ip, {r4, r5, r6}
+    ldr     r7, =__NR_process_vm_writev
+    swi     #0
+    ldmfd   sp!, {r4, r5, r6, r7}
+    .cfi_def_cfa_offset 0
+    cmn     r0, #(MAX_ERRNO + 1)
+    bxls    lr
+    neg     r0, r0
+    b       __set_errno_internal
+END(process_vm_writev)

libc/arch-arm64/arm64.mk

@@ -40,8 +40,6 @@ libc_bionic_src_files_arm64 += \
     arch-arm64/bionic/syscall.S \
     arch-arm64/bionic/vfork.S \
 
-# Work around for http://b/20065774.
-libc_bionic_src_files_arm64 += arch-arm64/bionic/libgcc_compat.c
 
 libc_crt_target_cflags_arm64 := \
     -I$(LOCAL_PATH)/arch-arm64/include

libc/arch-arm64/bionic/crtbegin.c

@@ -67,3 +67,4 @@ __asm__ (
 
 #include "../../arch-common/bionic/__dso_handle.h"
 #include "../../arch-common/bionic/atexit.h"
+#include "../../arch-common/bionic/pthread_atfork.h"

libc/arch-arm64/bionic/libgcc_compat.c

@@ -1,15 +0,0 @@
-/* STOPSHIP: remove this once the flounder blobs have been rebuilt (http://b/20065774). */
-
-#if !defined(__clang__)
-
-extern void __clear_cache(char*, char*);
-extern char _Unwind_Backtrace;
-extern char _Unwind_GetIP;
-
-void* __bionic_libgcc_compat_symbols[] = {
-    &__clear_cache,
-    &_Unwind_Backtrace,
-    &_Unwind_GetIP,
-};
-
-#endif

libc/arch-arm64/cortex-a53/cortex-a53.mk

@@ -0,0 +1 @@
+include bionic/libc/arch-arm64/generic/generic.mk

libc/arch-arm64/generic/bionic/memchr.S

@@ -101,7 +101,7 @@ ENTRY(memchr)
 	and	vhas_chr2.16b, vhas_chr2.16b, vrepmask.16b
 	addp	vend.16b, vhas_chr1.16b, vhas_chr2.16b		/* 256->128 */
 	addp	vend.16b, vend.16b, vend.16b			/* 128->64 */
-	mov	synd, vend.2d[0]
+	mov	synd, vend.d[0]
 	/* Clear the soff*2 lower bits */
 	lsl	tmp, soff, #1
 	lsr	synd, synd, tmp
@@ -121,7 +121,7 @@ ENTRY(memchr)
 	/* Use a fast check for the termination condition */
 	orr	vend.16b, vhas_chr1.16b, vhas_chr2.16b
 	addp	vend.2d, vend.2d, vend.2d
-	mov	synd, vend.2d[0]
+	mov	synd, vend.d[0]
 	/* We're not out of data, loop if we haven't found the character */
 	cbz	synd, .Lloop
 
@@ -131,7 +131,7 @@ ENTRY(memchr)
 	and	vhas_chr2.16b, vhas_chr2.16b, vrepmask.16b
 	addp	vend.16b, vhas_chr1.16b, vhas_chr2.16b		/* 256->128 */
 	addp	vend.16b, vend.16b, vend.16b			/* 128->64 */
-	mov	synd, vend.2d[0]
+	mov	synd, vend.d[0]
 	/* Only do the clear for the last possible block */
 	b.hi	.Ltail
 

libc/arch-arm64/generic/bionic/strchr.S

@@ -109,7 +109,7 @@ ENTRY(strchr)
 	addp	vend1.16b, vend1.16b, vend2.16b		// 128->64
 	lsr	tmp1, tmp3, tmp1
 
-	mov	tmp3, vend1.2d[0]
+	mov	tmp3, vend1.d[0]
 	bic	tmp1, tmp3, tmp1	// Mask padding bits.
 	cbnz	tmp1, .Ltail
 
@@ -124,7 +124,7 @@ ENTRY(strchr)
 	orr	vend2.16b, vhas_nul2.16b, vhas_chr2.16b
 	orr	vend1.16b, vend1.16b, vend2.16b
 	addp	vend1.2d, vend1.2d, vend1.2d
-	mov	tmp1, vend1.2d[0]
+	mov	tmp1, vend1.d[0]
 	cbz	tmp1, .Lloop
 
 	/* Termination condition found.  Now need to establish exactly why
@@ -138,7 +138,7 @@ ENTRY(strchr)
 	addp	vend1.16b, vend1.16b, vend2.16b		// 256->128
 	addp	vend1.16b, vend1.16b, vend2.16b		// 128->64
 
-	mov	tmp1, vend1.2d[0]
+	mov	tmp1, vend1.d[0]
 .Ltail:
 	/* Count the trailing zeros, by bit reversing...  */
 	rbit	tmp1, tmp1

libc/arch-arm64/syscalls/___clock_nanosleep.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(__clock_nanosleep)
+ENTRY(___clock_nanosleep)
     mov     x8, __NR_clock_nanosleep
     svc     #0
 
@@ -11,5 +11,5 @@ ENTRY(__clock_nanosleep)
     b.hi    __set_errno_internal
 
     ret
-END(__clock_nanosleep)
-.hidden __clock_nanosleep
+END(___clock_nanosleep)
+.hidden ___clock_nanosleep

libc/arch-arm64/syscalls/___close.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(close)
+ENTRY(___close)
     mov     x8, __NR_close
     svc     #0
 
@@ -11,4 +11,5 @@ ENTRY(close)
     b.hi    __set_errno_internal
 
     ret
-END(close)
+END(___close)
+.hidden ___close

libc/arch-arm64/syscalls/___fgetxattr.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fgetxattr)
+ENTRY(___fgetxattr)
     mov     x8, __NR_fgetxattr
     svc     #0
 
@@ -11,4 +11,5 @@ ENTRY(fgetxattr)
     b.hi    __set_errno_internal
 
     ret
-END(fgetxattr)
+END(___fgetxattr)
+.hidden ___fgetxattr

libc/arch-arm64/syscalls/___fsetxattr.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fsetxattr)
+ENTRY(___fsetxattr)
     mov     x8, __NR_fsetxattr
     svc     #0
 
@@ -11,4 +11,5 @@ ENTRY(fsetxattr)
     b.hi    __set_errno_internal
 
     ret
-END(fsetxattr)
+END(___fsetxattr)
+.hidden ___fsetxattr

libc/arch-arm64/syscalls/___rt_sigqueueinfo.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(__rt_sigqueueinfo)
+ENTRY(___rt_sigqueueinfo)
     mov     x8, __NR_rt_sigqueueinfo
     svc     #0
 
@@ -11,5 +11,5 @@ ENTRY(__rt_sigqueueinfo)
     b.hi    __set_errno_internal
 
     ret
-END(__rt_sigqueueinfo)
-.hidden __rt_sigqueueinfo
+END(___rt_sigqueueinfo)
+.hidden ___rt_sigqueueinfo

libc/arch-arm64/syscalls/process_vm_readv.S

@@ -0,0 +1,14 @@
+/* Generated by gensyscalls.py. Do not edit. */
+
+#include <private/bionic_asm.h>
+
+ENTRY(process_vm_readv)
+    mov     x8, __NR_process_vm_readv
+    svc     #0
+
+    cmn     x0, #(MAX_ERRNO + 1)
+    cneg    x0, x0, hi
+    b.hi    __set_errno_internal
+
+    ret
+END(process_vm_readv)

libc/arch-arm64/syscalls/process_vm_writev.S

@@ -0,0 +1,14 @@
+/* Generated by gensyscalls.py. Do not edit. */
+
+#include <private/bionic_asm.h>
+
+ENTRY(process_vm_writev)
+    mov     x8, __NR_process_vm_writev
+    svc     #0
+
+    cmn     x0, #(MAX_ERRNO + 1)
+    cneg    x0, x0, hi
+    b.hi    __set_errno_internal
+
+    ret
+END(process_vm_writev)

libc/arch-common/bionic/asm_multiarch.h

@@ -28,9 +28,9 @@
 
 #ifdef __LP64__
 # define ASM_PTR_SIZE(x) .quad x
-# define ASM_ALIGN(x)
+# define ASM_ALIGN_TO_PTR_SIZE .balign 8
 #else
 # define ASM_PTR_SIZE(x) .long x
-# define ASM_ALIGN(x)    .align x
+# define ASM_ALIGN_TO_PTR_SIZE .balign 4
 #endif
 

libc/arch-common/bionic/crtbegin.c

@@ -59,6 +59,7 @@ void _start() {
 
 #include "__dso_handle.h"
 #include "atexit.h"
+#include "pthread_atfork.h"
 #ifdef __i386__
 # include "../../arch-x86/bionic/__stack_chk_fail_local.h"
 #endif

libc/arch-common/bionic/crtbegin_so.c

@@ -56,6 +56,7 @@ void __on_dlclose() {
 # include "__dso_handle_so.h"
 # include "atexit.h"
 #endif
+#include "pthread_atfork.h"
 #ifdef __i386__
 # include "../../arch-x86/bionic/__stack_chk_fail_local.h"
 #endif

libc/arch-common/bionic/crtend.S

@@ -29,12 +29,15 @@
 #include "asm_multiarch.h"
 
 	.section .preinit_array, "aw"
+	ASM_ALIGN_TO_PTR_SIZE
 	ASM_PTR_SIZE(0)
 
 	.section .init_array, "aw"
+	ASM_ALIGN_TO_PTR_SIZE
 	ASM_PTR_SIZE(0)
 
 	.section .fini_array, "aw"
+	ASM_ALIGN_TO_PTR_SIZE
 	ASM_PTR_SIZE(0)
 
 #if defined(__linux__) && defined(__ELF__)
@@ -42,7 +45,9 @@
 #endif
 #if defined(__i386__) || defined(__x86_64__)
 	.section	.eh_frame,"a",@progbits
-	ASM_ALIGN(4)
+#if defined(__i386__)
+	.balign 4
+#endif
 	.type	__FRAME_END__, @object
 	.size	__FRAME_END__, 4
 __FRAME_END__:

libc/arch-common/bionic/crtend_so.S

@@ -26,22 +26,14 @@
  * SUCH DAMAGE.
  */
 
-#include "asm_multiarch.h"
-
-#ifndef __arm__
-	.section .init_array, "aw"
-	ASM_PTR_SIZE(0)
-
-	.section .fini_array, "aw"
-	ASM_PTR_SIZE(0)
-#endif
-
 #if defined(__linux__) && defined(__ELF__)
 	.section .note.GNU-stack,"",%progbits
 #endif
 #if defined(__i386__) || defined(__x86_64__)
 	.section	.eh_frame,"a",@progbits
-	ASM_ALIGN(4)
+#if defined(__i386__)
+	.balign 4
+#endif
 	.type	__FRAME_END__, @object
 	.size	__FRAME_END__, 4
 __FRAME_END__:

libc/arch-common/bionic/pthread_atfork.h

@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+extern void* __dso_handle;
+
+extern int __register_atfork(void (*prepare)(void), void (*parent)(void), void (*child)(void), void* dso);
+
+#ifndef _LIBC
+// Libc used to export this in previous versions, therefore it needs
+// to remain global for binary compatibility.
+__attribute__ ((visibility ("hidden")))
+#endif
+int pthread_atfork(void (*prepare)(void), void (*parent)(void), void (*child)(void)) {
+  return __register_atfork(prepare, parent, child, &__dso_handle);
+}
+

libc/arch-mips/bionic/crtbegin.c

@@ -92,3 +92,4 @@ __asm__ (
 
 #include "../../arch-common/bionic/__dso_handle.h"
 #include "../../arch-common/bionic/atexit.h"
+#include "../../arch-common/bionic/pthread_atfork.h"

libc/arch-mips/bionic/setjmp.S

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2014-2015 The Android Open Source Project
+ * Copyright (C) 2014 The Android Open Source Project
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without

libc/arch-mips/mips.mk

@@ -6,6 +6,9 @@
 
 libc_bionic_src_files_mips += \
     arch-mips/string/memcmp.c \
+    arch-mips/string/memcpy.S \
+    arch-mips/string/memset.S \
+    arch-mips/string/strcmp.S \
     bionic/__memcpy_chk.cpp \
     bionic/__memset_chk.cpp \
     bionic/__strcpy_chk.cpp \
@@ -31,7 +34,6 @@ libc_openbsd_src_files_mips += \
     upstream-openbsd/lib/libc/string/stpcpy.c \
     upstream-openbsd/lib/libc/string/stpncpy.c \
     upstream-openbsd/lib/libc/string/strcat.c \
-    upstream-openbsd/lib/libc/string/strcmp.c \
     upstream-openbsd/lib/libc/string/strcpy.c \
     upstream-openbsd/lib/libc/string/strlcat.c \
     upstream-openbsd/lib/libc/string/strlcpy.c \
@@ -54,14 +56,10 @@ libc_bionic_src_files_mips += \
 
 ifndef ARCH_MIPS_REV6
 libc_bionic_src_files_mips += \
-    arch-mips/string/memcpy.S \
-    arch-mips/string/memset.S \
     arch-mips/string/mips_strlen.c \
 
 else
 libc_bionic_src_files_mips += \
-    arch-mips/string/memcpy.c \
-    arch-mips/string/memset.c \
     arch-mips/string/strlen.c \
 
 endif

libc/arch-mips/string/memcpy.c

@@ -1,91 +0,0 @@
-/*	$OpenBSD: memcpy.c,v 1.1 2014/11/30 19:43:56 deraadt Exp $ */
-/*-
- * Copyright (c) 1990 The Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Chris Torek.
- *
- * 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. Neither the name of the University 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 REGENTS 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 REGENTS 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 <string.h>
-#include <stdlib.h>
-#include <syslog.h>
-
-/*
- * sizeof(word) MUST BE A POWER OF TWO
- * SO THAT wmask BELOW IS ALL ONES
- */
-typedef	long word;		/* "word" used for optimal copy speed */
-
-#define	wsize	sizeof(word)
-#define	wmask	(wsize - 1)
-
-/*
- * Copy a block of memory, not handling overlap.
- */
-void *
-memcpy(void *dst0, const void *src0, size_t length)
-{
-	char *dst = dst0;
-	const char *src = src0;
-	size_t t;
-
-	if (length == 0 || dst == src)		/* nothing to do */
-		goto done;
-
-	/*
-	 * Macros: loop-t-times; and loop-t-times, t>0
-	 */
-#define	TLOOP(s) if (t) TLOOP1(s)
-#define	TLOOP1(s) do { s; } while (--t)
-
-	/*
-	 * Copy forward.
-	 */
-	t = (long)src;	/* only need low bits */
-	if ((t | (long)dst) & wmask) {
-		/*
-		 * Try to align operands.  This cannot be done
-		 * unless the low bits match.
-		 */
-		if ((t ^ (long)dst) & wmask || length < wsize)
-			t = length;
-		else
-			t = wsize - (t & wmask);
-		length -= t;
-		TLOOP1(*dst++ = *src++);
-	}
-	/*
-	 * Copy whole words, then mop up any trailing bytes.
-	 */
-	t = length / wsize;
-	TLOOP(*(word *)dst = *(word *)src; src += wsize; dst += wsize);
-	t = length & wmask;
-	TLOOP(*dst++ = *src++);
-done:
-	return (dst0);
-}

libc/arch-mips/string/memset.S

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009
+ * Copyright (c) 2013
  *      MIPS Technologies, Inc., California.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -27,216 +27,410 @@
  * SUCH DAMAGE.
  */
 
-/************************************************************************
- *
- *  memset.S, version "64h" with 1 cache line horizon for "pref 30" and 14 nops
- *  Version: "043009"
- *
- ************************************************************************/
-
-
-/************************************************************************
- *  Include files
- ************************************************************************/
-
-#include <private/bionic_asm.h>
-
-/*
- * This routine could be optimized for MIPS64. The current code only
- * uses MIPS32 instructions.
- */
-
-#if defined(__MIPSEB__)
-#  define SWHI	swl		/* high part is left in big-endian	*/
-#  define SWLO	swr		/* low part is right in big-endian	*/
-#endif
-
-#if defined(__MIPSEL__)
-#  define SWHI	swr		/* high part is right in little-endian	*/
-#  define SWLO	swl		/* low part is left in little-endian	*/
-#endif
-
-#if !(defined(XGPROF) || defined(XPROF))
-#undef SETUP_GP
-#define SETUP_GP
-#endif
-
-#ifdef NDEBUG
-#define DBG #
+#ifdef __ANDROID__
+# include <private/bionic_asm.h>
+# define PREFETCH_STORE_HINT PREFETCH_HINT_PREPAREFORSTORE
+#elif _LIBC
+# include <sysdep.h>
+# include <regdef.h>
+# include <sys/asm.h>
+# define PREFETCH_STORE_HINT PREFETCH_HINT_PREPAREFORSTORE
+#elif _COMPILING_NEWLIB
+# include "machine/asm.h"
+# include "machine/regdef.h"
+# define PREFETCH_STORE_HINT PREFETCH_HINT_PREPAREFORSTORE
 #else
-#define DBG
+# include <regdef.h>
+# include <sys/asm.h>
 #endif
 
-LEAF(memset,0)
+/* Check to see if the MIPS architecture we are compiling for supports
+   prefetching.  */
 
+#if (__mips == 4) || (__mips == 5) || (__mips == 32) || (__mips == 64)
+# ifndef DISABLE_PREFETCH
+#  define USE_PREFETCH
+# endif
+#endif
+
+#if defined(_MIPS_SIM) && ((_MIPS_SIM == _ABI64) || (_MIPS_SIM == _ABIN32))
+# ifndef DISABLE_DOUBLE
+#  define USE_DOUBLE
+# endif
+#endif
+
+#ifndef USE_DOUBLE
+# ifndef DISABLE_DOUBLE_ALIGN
+#  define DOUBLE_ALIGN
+# endif
+#endif
+
+/* Some asm.h files do not have the L macro definition.  */
+#ifndef L
+# if _MIPS_SIM == _ABIO32
+#  define L(label) $L ## label
+# else
+#  define L(label) .L ## label
+# endif
+#endif
+
+/* Some asm.h files do not have the PTR_ADDIU macro definition.  */
+#ifndef PTR_ADDIU
+# if _MIPS_SIM == _ABIO32
+#  define PTR_ADDIU	addiu
+# else
+#  define PTR_ADDIU	daddiu
+# endif
+#endif
+
+/* New R6 instructions that may not be in asm.h.  */
+#ifndef PTR_LSA
+# if _MIPS_SIM == _ABIO32
+#  define PTR_LSA        lsa
+# else
+#  define PTR_LSA        dlsa
+# endif
+#endif
+
+/* Using PREFETCH_HINT_PREPAREFORSTORE instead of PREFETCH_STORE
+   or PREFETCH_STORE_STREAMED offers a large performance advantage
+   but PREPAREFORSTORE has some special restrictions to consider.
+
+   Prefetch with the 'prepare for store' hint does not copy a memory
+   location into the cache, it just allocates a cache line and zeros
+   it out.  This means that if you do not write to the entire cache
+   line before writing it out to memory some data will get zero'ed out
+   when the cache line is written back to memory and data will be lost.
+
+   There are ifdef'ed sections of this memcpy to make sure that it does not
+   do prefetches on cache lines that are not going to be completely written.
+   This code is only needed and only used when PREFETCH_STORE_HINT is set to
+   PREFETCH_HINT_PREPAREFORSTORE.  This code assumes that cache lines are
+   less than MAX_PREFETCH_SIZE bytes and if the cache line is larger it will
+   not work correctly.  */
+
+#ifdef USE_PREFETCH
+# define PREFETCH_HINT_STORE		1
+# define PREFETCH_HINT_STORE_STREAMED	5
+# define PREFETCH_HINT_STORE_RETAINED	7
+# define PREFETCH_HINT_PREPAREFORSTORE	30
+
+/* If we have not picked out what hints to use at this point use the
+   standard load and store prefetch hints.  */
+# ifndef PREFETCH_STORE_HINT
+#  define PREFETCH_STORE_HINT PREFETCH_HINT_STORE
+# endif
+
+/* We double everything when USE_DOUBLE is true so we do 2 prefetches to
+   get 64 bytes in that case.  The assumption is that each individual
+   prefetch brings in 32 bytes.  */
+# ifdef USE_DOUBLE
+#  define PREFETCH_CHUNK 64
+#  define PREFETCH_FOR_STORE(chunk, reg) \
+    pref PREFETCH_STORE_HINT, (chunk)*64(reg); \
+    pref PREFETCH_STORE_HINT, ((chunk)*64)+32(reg)
+# else
+#  define PREFETCH_CHUNK 32
+#  define PREFETCH_FOR_STORE(chunk, reg) \
+    pref PREFETCH_STORE_HINT, (chunk)*32(reg)
+# endif
+
+/* MAX_PREFETCH_SIZE is the maximum size of a prefetch, it must not be less
+   than PREFETCH_CHUNK, the assumed size of each prefetch.  If the real size
+   of a prefetch is greater than MAX_PREFETCH_SIZE and the PREPAREFORSTORE
+   hint is used, the code will not work correctly.  If PREPAREFORSTORE is not
+   used than MAX_PREFETCH_SIZE does not matter.  */
+# define MAX_PREFETCH_SIZE 128
+/* PREFETCH_LIMIT is set based on the fact that we never use an offset greater
+   than 5 on a STORE prefetch and that a single prefetch can never be larger
+   than MAX_PREFETCH_SIZE.  We add the extra 32 when USE_DOUBLE is set because
+   we actually do two prefetches in that case, one 32 bytes after the other.  */
+# ifdef USE_DOUBLE
+#  define PREFETCH_LIMIT (5 * PREFETCH_CHUNK) + 32 + MAX_PREFETCH_SIZE
+# else
+#  define PREFETCH_LIMIT (5 * PREFETCH_CHUNK) + MAX_PREFETCH_SIZE
+# endif
+
+# if (PREFETCH_STORE_HINT == PREFETCH_HINT_PREPAREFORSTORE) \
+    && ((PREFETCH_CHUNK * 4) < MAX_PREFETCH_SIZE)
+/* We cannot handle this because the initial prefetches may fetch bytes that
+   are before the buffer being copied.  We start copies with an offset
+   of 4 so avoid this situation when using PREPAREFORSTORE.  */
+#  error "PREFETCH_CHUNK is too large and/or MAX_PREFETCH_SIZE is too small."
+# endif
+#else /* USE_PREFETCH not defined */
+# define PREFETCH_FOR_STORE(offset, reg)
+#endif
+
+#if __mips_isa_rev > 5
+# if (PREFETCH_STORE_HINT == PREFETCH_HINT_PREPAREFORSTORE)
+#  undef PREFETCH_STORE_HINT
+#  define PREFETCH_STORE_HINT PREFETCH_HINT_STORE_STREAMED
+# endif
+# define R6_CODE
+#endif
+
+/* Allow the routine to be named something else if desired.  */
+#ifndef MEMSET_NAME
+# define MEMSET_NAME memset
+#endif
+
+/* We load/store 64 bits at a time when USE_DOUBLE is true.
+   The C_ prefix stands for CHUNK and is used to avoid macro name
+   conflicts with system header files.  */
+
+#ifdef USE_DOUBLE
+# define C_ST	sd
+# if __MIPSEB
+#  define C_STHI	sdl	/* high part is left in big-endian	*/
+# else
+#  define C_STHI	sdr	/* high part is right in little-endian	*/
+# endif
+#else
+# define C_ST	sw
+# if __MIPSEB
+#  define C_STHI	swl	/* high part is left in big-endian	*/
+# else
+#  define C_STHI	swr	/* high part is right in little-endian	*/
+# endif
+#endif
+
+/* Bookkeeping values for 32 vs. 64 bit mode.  */
+#ifdef USE_DOUBLE
+# define NSIZE 8
+# define NSIZEMASK 0x3f
+# define NSIZEDMASK 0x7f
+#else
+# define NSIZE 4
+# define NSIZEMASK 0x1f
+# define NSIZEDMASK 0x3f
+#endif
+#define UNIT(unit) ((unit)*NSIZE)
+#define UNITM1(unit) (((unit)*NSIZE)-1)
+
+#ifdef __ANDROID__
+LEAF(MEMSET_NAME,0)
+#else
+LEAF(MEMSET_NAME)
+#endif
+
+	.set	nomips16
 	.set	noreorder
-	.set	noat
+/* If the size is less than 2*NSIZE (8 or 16), go to L(lastb).  Regardless of
+   size, copy dst pointer to v0 for the return value.  */
+	slti	t2,a2,(2 * NSIZE)
+	bne	t2,zero,L(lastb)
+	move	v0,a0
 
-	addu	t0,a0,a2		# t0 is the "past the end" address
-	slti	AT,a2,4			# is a2 less than 4?
-	bne	AT,zero,.Llast4		# if yes, go to last4
-	 move	v0,a0			# memset returns the dst pointer
+/* If memset value is not zero, we copy it to all the bytes in a 32 or 64
+   bit word.  */
+	beq	a1,zero,L(set0)		/* If memset value is zero no smear  */
+	PTR_SUBU a3,zero,a0
+	nop
 
-	beq	a1,zero,.Lset0
-	 subu	v1,zero,a0
-
-	# smear byte into 32 bit word
-#if (__mips==32) && (__mips_isa_rev>=2)
-	ins     a1, a1, 8, 8        # Replicate fill byte into half-word.
-	ins     a1, a1, 16, 16      # Replicate fill byte into word.
+	/* smear byte into 32 or 64 bit word */
+#if ((__mips == 64) || (__mips == 32)) && (__mips_isa_rev >= 2)
+# ifdef USE_DOUBLE
+	dins	a1, a1, 8, 8        /* Replicate fill byte into half-word.  */
+	dins	a1, a1, 16, 16      /* Replicate fill byte into word.       */
+	dins	a1, a1, 32, 32      /* Replicate fill byte into dbl word.   */
+# else
+	ins	a1, a1, 8, 8        /* Replicate fill byte into half-word.  */
+	ins	a1, a1, 16, 16      /* Replicate fill byte into word.       */
+# endif
 #else
-	and	a1,0xff
-	sll	AT,a1,8
-	or	a1,AT
-	sll	AT,a1,16
-	or	a1,AT
+# ifdef USE_DOUBLE
+        and     a1,0xff
+	dsll	t2,a1,8
+	or	a1,t2
+	dsll	t2,a1,16
+	or	a1,t2
+	dsll	t2,a1,32
+	or	a1,t2
+# else
+        and     a1,0xff
+	sll	t2,a1,8
+	or	a1,t2
+	sll	t2,a1,16
+	or	a1,t2
+# endif
 #endif
 
-.Lset0:
-	andi	v1,v1,0x3		# word-unaligned address?
-	beq	v1,zero,.Laligned	# v1 is the unalignment count
-	 subu	a2,a2,v1
-	SWHI	a1,0(a0)
-	addu	a0,a0,v1
+/* If the destination address is not aligned do a partial store to get it
+   aligned.  If it is already aligned just jump to L(aligned).  */
+L(set0):
+#ifndef R6_CODE
+	andi	t2,a3,(NSIZE-1)		/* word-unaligned address?          */
+	beq	t2,zero,L(aligned)	/* t2 is the unalignment count      */
+	PTR_SUBU a2,a2,t2
+	C_STHI	a1,0(a0)
+	PTR_ADDU a0,a0,t2
+#else /* R6_CODE */
+	andi	t2,a0,(NSIZE-1)
+	lapc	t9,L(atable)
+	PTR_LSA	t9,t2,t9,2
+	jrc	t9
+L(atable):
+	bc	L(aligned)
+# ifdef USE_DOUBLE
+	bc	L(lb7)
+	bc	L(lb6)
+	bc	L(lb5)
+	bc	L(lb4)
+# endif
+	bc	L(lb3)
+	bc	L(lb2)
+	bc	L(lb1)
+L(lb7):
+	sb	a1,6(a0)
+L(lb6):
+	sb	a1,5(a0)
+L(lb5):
+	sb	a1,4(a0)
+L(lb4):
+	sb	a1,3(a0)
+L(lb3):
+	sb	a1,2(a0)
+L(lb2):
+	sb	a1,1(a0)
+L(lb1):
+	sb	a1,0(a0)
 
-# Here we have the "word-aligned" a0 (until the "last4")
-.Laligned:
-	andi	t8,a2,0x3f	# any 64-byte chunks?
-				# t8 is the byte count past 64-byte chunks
-	beq	a2,t8,.Lchk8w	# when a2==t8, no 64-byte chunks
-				# There will be at most 1 32-byte chunk then
-	 subu	a3,a2,t8	# subtract from a2 the reminder
-				# Here a3 counts bytes in 16w chunks
-	addu	a3,a0,a3	# Now a3 is the final dst after 64-byte chunks
-
-# Find out, if there are any 64-byte chunks after which will be still at least
-# 96 bytes left. The value "96" is calculated as needed buffer for
-# "pref 30,64(a0)" prefetch, which can be used as "pref 30,0(a0)" after
-# incrementing "a0" by 64.
-# For "a2" below 160 there will be no such "pref 30 safe" 64-byte chunk.
-#
-	sltiu	v1,a2,160
-	bgtz	v1,.Lloop16w_nopref30	# skip "pref 30,0(a0)"
-	 subu	t7,a2,96	# subtract "pref 30 unsafe" region
-		# below we have at least 1 64-byte chunk which is "pref 30 safe"
-	andi	t6,t7,0x3f	# t6 is past "64-byte safe chunks" reminder
-	subu	t5,t7,t6	# subtract from t7 the reminder
-				# Here t5 counts bytes in 16w "safe" chunks
-	addu	t4,a0,t5	# Now t4 is the dst after 64-byte "safe" chunks
-
-# Don't use "pref 30,0(a0)" for a0 in a "middle" of a cache line
-#	pref	30,0(a0)
-# Here we are in the region, where it is safe to use "pref 30,64(a0)"
-.Lloop16w:
-	addiu	a0,a0,64
-	pref	30,-32(a0)	# continue setting up the dest, addr 64-32
-	sw	a1,-64(a0)
-	sw	a1,-60(a0)
-	sw	a1,-56(a0)
-	sw	a1,-52(a0)
-	sw	a1,-48(a0)
-	sw	a1,-44(a0)
-	sw	a1,-40(a0)
-	sw	a1,-36(a0)
-	nop
-	nop			# the extra nop instructions help to balance
-	nop			# cycles needed for "store" + "fill" + "evict"
-	nop			# For 64byte store there are needed 8 fill
-	nop			# and 8 evict cycles, i.e. at least 32 instr.
-	nop
-	nop
-	pref	30,0(a0)	# continue setting up the dest, addr 64-0
-	sw	a1,-32(a0)
-	sw	a1,-28(a0)
-	sw	a1,-24(a0)
-	sw	a1,-20(a0)
-	sw	a1,-16(a0)
-	sw	a1,-12(a0)
-	sw	a1,-8(a0)
-	sw	a1,-4(a0)
-	nop
-	nop
-	nop
-	nop			# NOTE: adding 14 nop-s instead of 12 nop-s
-	nop			# gives better results for "fast" memory
-	nop
-	bne	a0,t4,.Lloop16w
-	 nop
-
-	beq	a0,a3,.Lchk8w	# maybe no more 64-byte chunks?
-	 nop			# this "delayed slot" is useless ...
-
-.Lloop16w_nopref30:	# there could be up to 3 "64-byte nopref30" chunks
-	addiu	a0,a0,64
-	sw	a1,-64(a0)
-	sw	a1,-60(a0)
-	sw	a1,-56(a0)
-	sw	a1,-52(a0)
-	sw	a1,-48(a0)
-	sw	a1,-44(a0)
-	sw	a1,-40(a0)
-	sw	a1,-36(a0)
-	sw	a1,-32(a0)
-	sw	a1,-28(a0)
-	sw	a1,-24(a0)
-	sw	a1,-20(a0)
-	sw	a1,-16(a0)
-	sw	a1,-12(a0)
-	sw	a1,-8(a0)
-	bne	a0,a3,.Lloop16w_nopref30
-	 sw	a1,-4(a0)
-
-.Lchk8w:		# t8 here is the byte count past 64-byte chunks
-
-	andi	t7,t8,0x1f	# is there a 32-byte chunk?
-				# the t7 is the reminder count past 32-bytes
-	beq	t8,t7,.Lchk1w	# when t8==t7, no 32-byte chunk
-	 move	a2,t7
+	li	t9,NSIZE
+	subu	t2,t9,t2
+	PTR_SUBU a2,a2,t2
+	PTR_ADDU a0,a0,t2
+#endif /* R6_CODE */
 
+L(aligned):
+/* If USE_DOUBLE is not set we may still want to align the data on a 16
+   byte boundry instead of an 8 byte boundry to maximize the opportunity
+   of proAptiv chips to do memory bonding (combining two sequential 4
+   byte stores into one 8 byte store).  We know there are at least 4 bytes
+   left to store or we would have jumped to L(lastb) earlier in the code.  */
+#ifdef DOUBLE_ALIGN
+	andi	t2,a3,4
+	beq	t2,zero,L(double_aligned)
+	PTR_SUBU a2,a2,t2
 	sw	a1,0(a0)
-	sw	a1,4(a0)
-	sw	a1,8(a0)
-	sw	a1,12(a0)
-	sw	a1,16(a0)
-	sw	a1,20(a0)
-	sw	a1,24(a0)
-	sw	a1,28(a0)
-	addiu	a0,a0,32
+	PTR_ADDU a0,a0,t2
+L(double_aligned):
+#endif
 
-.Lchk1w:
-	andi	t8,a2,0x3	# now t8 is the reminder past 1w chunks
-	beq	a2,t8,.Llast4aligned
-	 subu	a3,a2,t8	# a3 is the count of bytes in 1w chunks
-	addu	a3,a0,a3	# now a3 is the dst address past the 1w chunks
+/* Now the destination is aligned to (word or double word) aligned address
+   Set a2 to count how many bytes we have to copy after all the 64/128 byte
+   chunks are copied and a3 to the dest pointer after all the 64/128 byte
+   chunks have been copied.  We will loop, incrementing a0 until it equals
+   a3.  */
+	andi	t8,a2,NSIZEDMASK /* any whole 64-byte/128-byte chunks? */
+	beq	a2,t8,L(chkw)	 /* if a2==t8, no 64-byte/128-byte chunks */
+	PTR_SUBU a3,a2,t8	 /* subtract from a2 the reminder */
+	PTR_ADDU a3,a0,a3	 /* Now a3 is the final dst after loop */
 
-# copying in words (4-byte chunks)
-.LwordCopy_loop:
-	addiu	a0,a0,4
-	bne	a0,a3,.LwordCopy_loop
-	 sw	a1,-4(a0)
+/* When in the loop we may prefetch with the 'prepare to store' hint,
+   in this case the a0+x should not be past the "t0-32" address.  This
+   means: for x=128 the last "safe" a0 address is "t0-160".  Alternatively,
+   for x=64 the last "safe" a0 address is "t0-96" In the current version we
+   will use "prefetch hint,128(a0)", so "t0-160" is the limit.  */
+#if defined(USE_PREFETCH) \
+    && (PREFETCH_STORE_HINT == PREFETCH_HINT_PREPAREFORSTORE)
+	PTR_ADDU t0,a0,a2		/* t0 is the "past the end" address */
+	PTR_SUBU t9,t0,PREFETCH_LIMIT	/* t9 is the "last safe pref" address */
+#endif
+#if defined(USE_PREFETCH) \
+    && (PREFETCH_STORE_HINT != PREFETCH_HINT_PREPAREFORSTORE)
+	PREFETCH_FOR_STORE (1, a0)
+	PREFETCH_FOR_STORE (2, a0)
+	PREFETCH_FOR_STORE (3, a0)
+#endif
 
-# store last 0-3 bytes
-# this will repeat the last store if the memset finishes on a word boundary
-.Llast4aligned:
+L(loop16w):
+#if defined(USE_PREFETCH) \
+    && (PREFETCH_STORE_HINT == PREFETCH_HINT_PREPAREFORSTORE)
+	sltu	v1,t9,a0		/* If a0 > t9 don't use next prefetch */
+	bgtz	v1,L(skip_pref)
+	nop
+#endif
+#ifndef R6_CODE
+	PREFETCH_FOR_STORE (4, a0)
+	PREFETCH_FOR_STORE (5, a0)
+#else
+	PREFETCH_FOR_STORE (2, a0)
+#endif
+L(skip_pref):
+	C_ST	a1,UNIT(0)(a0)
+	C_ST	a1,UNIT(1)(a0)
+	C_ST	a1,UNIT(2)(a0)
+	C_ST	a1,UNIT(3)(a0)
+	C_ST	a1,UNIT(4)(a0)
+	C_ST	a1,UNIT(5)(a0)
+	C_ST	a1,UNIT(6)(a0)
+	C_ST	a1,UNIT(7)(a0)
+	C_ST	a1,UNIT(8)(a0)
+	C_ST	a1,UNIT(9)(a0)
+	C_ST	a1,UNIT(10)(a0)
+	C_ST	a1,UNIT(11)(a0)
+	C_ST	a1,UNIT(12)(a0)
+	C_ST	a1,UNIT(13)(a0)
+	C_ST	a1,UNIT(14)(a0)
+	C_ST	a1,UNIT(15)(a0)
+	PTR_ADDIU a0,a0,UNIT(16)	/* adding 64/128 to dest */
+	bne	a0,a3,L(loop16w)
+	nop
+	move	a2,t8
+
+/* Here we have dest word-aligned but less than 64-bytes or 128 bytes to go.
+   Check for a 32(64) byte chunk and copy if if there is one.  Otherwise
+   jump down to L(chk1w) to handle the tail end of the copy.  */
+L(chkw):
+	andi	t8,a2,NSIZEMASK	/* is there a 32-byte/64-byte chunk.  */
+				/* the t8 is the reminder count past 32-bytes */
+	beq	a2,t8,L(chk1w)/* when a2==t8, no 32-byte chunk */
+	nop
+	C_ST	a1,UNIT(0)(a0)
+	C_ST	a1,UNIT(1)(a0)
+	C_ST	a1,UNIT(2)(a0)
+	C_ST	a1,UNIT(3)(a0)
+	C_ST	a1,UNIT(4)(a0)
+	C_ST	a1,UNIT(5)(a0)
+	C_ST	a1,UNIT(6)(a0)
+	C_ST	a1,UNIT(7)(a0)
+	PTR_ADDIU a0,a0,UNIT(8)
+
+/* Here we have less than 32(64) bytes to set.  Set up for a loop to
+   copy one word (or double word) at a time.  Set a2 to count how many
+   bytes we have to copy after all the word (or double word) chunks are
+   copied and a3 to the dest pointer after all the (d)word chunks have
+   been copied.  We will loop, incrementing a0 until a0 equals a3.  */
+L(chk1w):
+	andi	a2,t8,(NSIZE-1)	/* a2 is the reminder past one (d)word chunks */
+	beq	a2,t8,L(lastb)
+	PTR_SUBU a3,t8,a2	/* a3 is count of bytes in one (d)word chunks */
+	PTR_ADDU a3,a0,a3	/* a3 is the dst address after loop */
+
+/* copying in words (4-byte or 8 byte chunks) */
+L(wordCopy_loop):
+	PTR_ADDIU a0,a0,UNIT(1)
+	bne	a0,a3,L(wordCopy_loop)
+	C_ST	a1,UNIT(-1)(a0)
+
+/* Copy the last 8 (or 16) bytes */
+L(lastb):
+	blez	a2,L(leave)
+	PTR_ADDU a3,a0,a2       /* a3 is the last dst address */
+L(lastbloop):
+	PTR_ADDIU a0,a0,1
+	bne	a0,a3,L(lastbloop)
+	sb	a1,-1(a0)
+L(leave):
 	j	ra
-	 SWLO	a1,-1(t0)
-
-.Llast4:
-	beq	a0,t0,.Llast4e
-.Llast4l:
-	 addiu	a0,a0,1
-	bne	a0,t0,.Llast4l
-	 sb	a1,-1(a0)
-.Llast4e:
-	j	ra
-	 nop
+	nop
 
 	.set	at
 	.set	reorder
-
-END(memset)
-
-
-/************************************************************************
- *  Implementation : Static functions
- ************************************************************************/
+END(MEMSET_NAME)
+#ifndef __ANDROID__
+# ifdef _LIBC
+libc_hidden_builtin_def (MEMSET_NAME)
+# endif
+#endif

libc/arch-mips/string/strcmp.S

@@ -0,0 +1,260 @@
+/*
+ * Copyright (c) 2014
+ *      Imagination Technologies Limited.
+ *
+ * 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. Neither the name of the MIPS Technologies, Inc., 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 IMAGINATION TECHNOLOGIES LIMITED ``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 IMAGINATION TECHNOLOGIES LIMITED 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.
+ */
+
+#ifdef __ANDROID__
+# include <private/bionic_asm.h>
+#elif _LIBC
+# include <sysdep.h>
+# include <regdef.h>
+# include <sys/asm.h>
+#elif _COMPILING_NEWLIB
+# include "machine/asm.h"
+# include "machine/regdef.h"
+#else
+# include <regdef.h>
+# include <sys/asm.h>
+#endif
+
+/* Technically strcmp should not read past the end of the strings being
+   compared.  We will read a full word that may contain excess bits beyond
+   the NULL string terminator but unless ENABLE_READAHEAD is set, we will not
+   read the next word after the end of string.  Setting ENABLE_READAHEAD will
+   improve performance but is technically illegal based on the definition of
+   strcmp.  */
+#ifdef ENABLE_READAHEAD
+# define DELAY_READ
+#else
+# define DELAY_READ nop
+#endif
+
+/* Testing on a little endian machine showed using CLZ was a
+   performance loss, so we are not turning it on by default.  */
+#if defined(ENABLE_CLZ) && (__mips_isa_rev > 1)
+# define USE_CLZ
+#endif
+
+/* Some asm.h files do not have the L macro definition.  */
+#ifndef L
+# if _MIPS_SIM == _ABIO32
+#  define L(label) $L ## label
+# else
+#  define L(label) .L ## label
+# endif
+#endif
+
+/* Some asm.h files do not have the PTR_ADDIU macro definition.  */
+#ifndef PTR_ADDIU
+# if _MIPS_SIM == _ABIO32
+#  define PTR_ADDIU       addiu
+# else
+#  define PTR_ADDIU       daddiu
+# endif
+#endif
+
+/* Allow the routine to be named something else if desired.  */
+#ifndef STRCMP_NAME
+# define STRCMP_NAME strcmp
+#endif
+
+#ifdef __ANDROID__
+LEAF(STRCMP_NAME, 0)
+#else
+LEAF(STRCMP_NAME)
+#endif
+	.set	nomips16
+	.set	noreorder
+
+	or	t0, a0, a1
+	andi	t0,0x3
+	bne	t0, zero, L(byteloop)
+
+/* Both strings are 4 byte aligned at this point.  */
+
+	lui	t8, 0x0101
+	ori	t8, t8, 0x0101
+	lui	t9, 0x7f7f
+	ori	t9, 0x7f7f
+
+#define STRCMP32(OFFSET) \
+	lw	v0, OFFSET(a0); \
+	lw	v1, OFFSET(a1); \
+	subu	t0, v0, t8; \
+	bne	v0, v1, L(worddiff); \
+	nor	t1, v0, t9; \
+	and	t0, t0, t1; \
+	bne	t0, zero, L(returnzero)
+
+L(wordloop):
+	STRCMP32(0)
+	DELAY_READ
+	STRCMP32(4)
+	DELAY_READ
+	STRCMP32(8)
+	DELAY_READ
+	STRCMP32(12)
+	DELAY_READ
+	STRCMP32(16)
+	DELAY_READ
+	STRCMP32(20)
+	DELAY_READ
+	STRCMP32(24)
+	DELAY_READ
+	STRCMP32(28)
+	PTR_ADDIU a0, a0, 32
+	b	L(wordloop)
+	PTR_ADDIU a1, a1, 32
+
+L(returnzero):
+	j	ra
+	move	v0, zero
+
+L(worddiff):
+#ifdef USE_CLZ
+	subu	t0, v0, t8
+	nor	t1, v0, t9
+	and	t1, t0, t1
+	xor	t0, v0, v1
+	or	t0, t0, t1
+# if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+	wsbh	t0, t0
+	rotr	t0, t0, 16
+# endif
+	clz	t1, t0
+	and	t1, 0xf8
+# if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+	neg	t1
+	addu	t1, 24
+# endif
+	rotrv	v0, v0, t1
+	rotrv	v1, v1, t1
+	and	v0, v0, 0xff
+	and	v1, v1, 0xff
+	j	ra
+	subu	v0, v0, v1
+#else /* USE_CLZ */
+# if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+	andi	t0, v0, 0xff
+	beq	t0, zero, L(wexit01)
+	andi	t1, v1, 0xff
+	bne	t0, t1, L(wexit01)
+
+	srl	t8, v0, 8
+	srl	t9, v1, 8
+	andi	t8, t8, 0xff
+	beq	t8, zero, L(wexit89)
+	andi	t9, t9, 0xff
+	bne	t8, t9, L(wexit89)
+
+	srl	t0, v0, 16
+	srl	t1, v1, 16
+	andi	t0, t0, 0xff
+	beq	t0, zero, L(wexit01)
+	andi	t1, t1, 0xff
+	bne	t0, t1, L(wexit01)
+
+	srl	t8, v0, 24
+	srl	t9, v1, 24
+# else /* __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ */
+	srl	t0, v0, 24
+	beq	t0, zero, L(wexit01)
+	srl	t1, v1, 24
+	bne	t0, t1, L(wexit01)
+
+	srl	t8, v0, 16
+	srl	t9, v1, 16
+	andi	t8, t8, 0xff
+	beq	t8, zero, L(wexit89)
+	andi	t9, t9, 0xff
+	bne	t8, t9, L(wexit89)
+
+	srl	t0, v0, 8
+	srl	t1, v1, 8
+	andi	t0, t0, 0xff
+	beq	t0, zero, L(wexit01)
+	andi	t1, t1, 0xff
+	bne	t0, t1, L(wexit01)
+
+	andi	t8, v0, 0xff
+	andi	t9, v1, 0xff
+# endif /* __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ */
+
+L(wexit89):
+	j	ra
+	subu	v0, t8, t9
+L(wexit01):
+	j	ra
+	subu	v0, t0, t1
+#endif /* USE_CLZ */
+
+/* It might seem better to do the 'beq' instruction between the two 'lbu'
+   instructions so that the nop is not needed but testing showed that this
+   code is actually faster (based on glibc strcmp test).  */
+#define BYTECMP01(OFFSET) \
+	lbu	v0, OFFSET(a0); \
+	lbu	v1, OFFSET(a1); \
+	beq	v0, zero, L(bexit01); \
+	nop; \
+	bne	v0, v1, L(bexit01)
+
+#define BYTECMP89(OFFSET) \
+	lbu	t8, OFFSET(a0); \
+	lbu	t9, OFFSET(a1); \
+	beq	t8, zero, L(bexit89); \
+	nop;	\
+	bne	t8, t9, L(bexit89)
+
+L(byteloop):
+	BYTECMP01(0)
+	BYTECMP89(1)
+	BYTECMP01(2)
+	BYTECMP89(3)
+	BYTECMP01(4)
+	BYTECMP89(5)
+	BYTECMP01(6)
+	BYTECMP89(7)
+	PTR_ADDIU a0, a0, 8
+	b	L(byteloop)
+	PTR_ADDIU a1, a1, 8
+
+L(bexit01):
+	j	ra
+	subu	v0, v0, v1
+L(bexit89):
+	j	ra
+	subu	v0, t8, t9
+
+	.set	at
+	.set	reorder
+
+END(STRCMP_NAME)
+#ifndef __ANDROID__
+# ifdef _LIBC
+libc_hidden_builtin_def (STRCMP_NAME)
+# endif
+#endif

libc/arch-mips/syscalls/___clock_nanosleep.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(__clock_nanosleep)
+ENTRY(___clock_nanosleep)
     .set noreorder
     .cpload t9
     li v0, __NR_clock_nanosleep
@@ -16,4 +16,5 @@ ENTRY(__clock_nanosleep)
     j t9
     nop
     .set reorder
-END(__clock_nanosleep)
+END(___clock_nanosleep)
+.hidden ___clock_nanosleep

libc/arch-mips/syscalls/___close.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(close)
+ENTRY(___close)
     .set noreorder
     .cpload t9
     li v0, __NR_close
@@ -16,4 +16,5 @@ ENTRY(close)
     j t9
     nop
     .set reorder
-END(close)
+END(___close)
+.hidden ___close

libc/arch-mips/syscalls/___fgetxattr.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fgetxattr)
+ENTRY(___fgetxattr)
     .set noreorder
     .cpload t9
     li v0, __NR_fgetxattr
@@ -16,4 +16,5 @@ ENTRY(fgetxattr)
     j t9
     nop
     .set reorder
-END(fgetxattr)
+END(___fgetxattr)
+.hidden ___fgetxattr

libc/arch-mips/syscalls/___fsetxattr.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fsetxattr)
+ENTRY(___fsetxattr)
     .set noreorder
     .cpload t9
     li v0, __NR_fsetxattr
@@ -16,4 +16,5 @@ ENTRY(fsetxattr)
     j t9
     nop
     .set reorder
-END(fsetxattr)
+END(___fsetxattr)
+.hidden ___fsetxattr

libc/arch-mips/syscalls/___rt_sigqueueinfo.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(__rt_sigqueueinfo)
+ENTRY(___rt_sigqueueinfo)
     .set noreorder
     .cpload t9
     li v0, __NR_rt_sigqueueinfo
@@ -16,4 +16,5 @@ ENTRY(__rt_sigqueueinfo)
     j t9
     nop
     .set reorder
-END(__rt_sigqueueinfo)
+END(___rt_sigqueueinfo)
+.hidden ___rt_sigqueueinfo

libc/arch-mips/syscalls/process_vm_readv.S

@@ -2,10 +2,10 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(ftruncate)
+ENTRY(process_vm_readv)
     .set noreorder
     .cpload t9
-    li v0, __NR_ftruncate
+    li v0, __NR_process_vm_readv
     syscall
     bnez a3, 1f
     move a0, v0
@@ -16,4 +16,4 @@ ENTRY(ftruncate)
     j t9
     nop
     .set reorder
-END(ftruncate)
+END(process_vm_readv)

libc/arch-mips/syscalls/process_vm_writev.S

@@ -0,0 +1,19 @@
+/* Generated by gensyscalls.py. Do not edit. */
+
+#include <private/bionic_asm.h>
+
+ENTRY(process_vm_writev)
+    .set noreorder
+    .cpload t9
+    li v0, __NR_process_vm_writev
+    syscall
+    bnez a3, 1f
+    move a0, v0
+    j ra
+    nop
+1:
+    la t9,__set_errno_internal
+    j t9
+    nop
+    .set reorder
+END(process_vm_writev)

libc/arch-mips64/bionic/crtbegin.c

@@ -92,3 +92,4 @@ __asm__ (
 
 #include "../../arch-common/bionic/__dso_handle.h"
 #include "../../arch-common/bionic/atexit.h"
+#include "../../arch-common/bionic/pthread_atfork.h"

libc/arch-mips64/bionic/stat.cpp

@@ -32,29 +32,28 @@
 #include <unistd.h>
 
 struct kernel_stat {
- unsigned int st_dev;
- unsigned int st_pad0[3];
- unsigned long st_ino;
- mode_t st_mode;
- __u32 st_nlink;
- uid_t st_uid;
- gid_t st_gid;
- unsigned int st_rdev;
- unsigned int st_pad1[3];
- __kernel_off_t st_size;
- unsigned int _st_atime;
- unsigned int st_atime_nsec;
- unsigned int _st_mtime;
- unsigned int st_mtime_nsec;
- unsigned int _st_ctime;
- unsigned int st_ctime_nsec;
- unsigned int st_blksize;
- unsigned int st_pad2;
- unsigned long st_blocks;
+  unsigned int st_dev;
+  unsigned int st_pad0[3];
+  unsigned long st_ino;
+  mode_t st_mode;
+  __u32 st_nlink;
+  uid_t st_uid;
+  gid_t st_gid;
+  unsigned int st_rdev;
+  unsigned int st_pad1[3];
+  __kernel_off_t st_size;
+  unsigned int _st_atime;
+  unsigned int st_atime_nsec;
+  unsigned int _st_mtime;
+  unsigned int st_mtime_nsec;
+  unsigned int _st_ctime;
+  unsigned int st_ctime_nsec;
+  unsigned int st_blksize;
+  unsigned int st_pad2;
+  unsigned long st_blocks;
 };
 
-void copy_stat(struct stat *st, struct kernel_stat *s)
-{
+static void copy_stat(struct stat* st, struct kernel_stat* s) {
   st->st_dev = static_cast<dev_t>(s->st_dev);
   st->st_ino = static_cast<ino_t>(s->st_ino);
   st->st_mode = static_cast<mode_t>(s->st_mode);
@@ -73,30 +72,17 @@ void copy_stat(struct stat *st, struct kernel_stat *s)
   st->st_ctim.tv_nsec = static_cast<long>(s->st_ctime_nsec);
 }
 
-int fstat(int fp, struct stat *st)
-{
+int fstat(int fp, struct stat* st) {
   kernel_stat s;
-  int ret;
-  ret = syscall (__NR_fstat, fp, &s);
-  copy_stat (st, &s);
+  int ret = syscall(__NR_fstat, fp, &s);
+  copy_stat(st, &s);
   return ret;
 }
 __strong_alias(fstat64, fstat);
 
-int newfstatat(int dirfd, const char *pathname, struct stat *buf, int flags)
-{
+int fstatat(int dirfd, const char* pathname, struct stat* buf, int flags) {
    kernel_stat s;
-   int ret;
-   ret = syscall(__NR_newfstatat, dirfd, pathname, &s, flags);
-   copy_stat(buf, &s);
-   return ret;
-}
-
-int fstatat(int dirfd, const char *pathname, struct stat *buf, int flags)
-{
-   kernel_stat s;
-   int ret;
-   ret = syscall(__NR_newfstatat, dirfd, pathname, &s, flags);
+   int ret = syscall(__NR_newfstatat, dirfd, pathname, &s, flags);
    copy_stat(buf, &s);
    return ret;
 }

libc/arch-mips64/mips64.mk

@@ -5,6 +5,11 @@
 #
 
 libc_bionic_src_files_mips64 += \
+    arch-mips/string/memcmp.c \
+    arch-mips/string/memcpy.S \
+    arch-mips/string/memset.S \
+    arch-mips/string/strcmp.S \
+    arch-mips/string/strlen.c \
     bionic/__memcpy_chk.cpp \
     bionic/__memset_chk.cpp \
     bionic/__strcpy_chk.cpp \
@@ -12,10 +17,6 @@ libc_bionic_src_files_mips64 += \
     bionic/strchr.cpp \
     bionic/strnlen.c \
     bionic/strrchr.cpp \
-    arch-mips/string/memcmp.c \
-    arch-mips/string/memcpy.c \
-    arch-mips/string/memset.c \
-    arch-mips/string/strlen.c \
 
 libc_freebsd_src_files_mips64 += \
     upstream-freebsd/lib/libc/string/wcscat.c \
@@ -34,7 +35,6 @@ libc_openbsd_src_files_mips64 += \
     upstream-openbsd/lib/libc/string/stpcpy.c \
     upstream-openbsd/lib/libc/string/stpncpy.c \
     upstream-openbsd/lib/libc/string/strcat.c \
-    upstream-openbsd/lib/libc/string/strcmp.c \
     upstream-openbsd/lib/libc/string/strcpy.c \
     upstream-openbsd/lib/libc/string/strlcat.c \
     upstream-openbsd/lib/libc/string/strlcpy.c \

libc/arch-mips64/string/memcpy.S

@@ -1,423 +0,0 @@
-/*
- * Copyright (c) 2009
- *      MIPS Technologies, Inc., California.
- *
- * 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. Neither the name of the MIPS Technologies, Inc., 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 MIPS TECHNOLOGIES, INC. ``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 MIPS TECHNOLOGIES, INC. 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.
- */
-
-/************************************************************************
- *
- *  memcpy.S
- *  Version: "043009"
- *
- ************************************************************************/
-
-
-/************************************************************************
- *  Include files
- ************************************************************************/
-
-#include <private/bionic_asm.h>
-
-
-/*
- * This routine could be optimized for MIPS64. The current code only
- * uses MIPS32 instructions.
- */
-#if defined(__MIPSEB__)
-#  define LWHI	lwl		/* high part is left in big-endian	*/
-#  define SWHI	swl		/* high part is left in big-endian	*/
-#  define LWLO	lwr		/* low part is right in big-endian	*/
-#  define SWLO	swr		/* low part is right in big-endian	*/
-#endif
-
-#if defined(__MIPSEL__)
-#  define LWHI	lwr		/* high part is right in little-endian	*/
-#  define SWHI	swr		/* high part is right in little-endian	*/
-#  define LWLO	lwl		/* low part is left in big-endian	*/
-#  define SWLO	swl		/* low part is left in big-endian	*/
-#endif
-
-LEAF(memcpy,0)
-
-	.set	noreorder
-	.set	noat
-/*
- * Below we handle the case where memcpy is called with overlapping src and dst.
- * Although memcpy is not required to handle this case, some parts of Android like Skia
- * rely on such usage. We call memmove to handle such cases.
- */
-	subu	t0,a0,a1
-	sra	AT,t0,31
-	xor	t1,t0,AT
-	subu	t0,t1,AT
-	sltu	AT,t0,a2
-	beq	AT,zero,.Lmemcpy
-	 la	t9,memmove
-	jr	t9
-	 nop
-.Lmemcpy:
-	slti	AT,a2,8
-	bne	AT,zero,.Llast8
-	 move	v0,a0	# memcpy returns the dst pointer
-
-# Test if the src and dst are word-aligned, or can be made word-aligned
-	xor	t8,a1,a0
-	andi	t8,t8,0x3		# t8 is a0/a1 word-displacement
-
-	bne	t8,zero,.Lunaligned
-	 negu	a3,a0
-
-	andi	a3,a3,0x3	# we need to copy a3 bytes to make a0/a1 aligned
-	beq	a3,zero,.Lchk16w # when a3=0 then the dst (a0) is word-aligned
-	 subu	a2,a2,a3	# now a2 is the remining bytes count
-
-	LWHI	t8,0(a1)
-	addu	a1,a1,a3
-	SWHI	t8,0(a0)
-	addu	a0,a0,a3
-
-# Now the dst/src are mutually word-aligned with word-aligned addresses
-.Lchk16w:
-	andi	t8,a2,0x3f	# any whole 64-byte chunks?
-				# t8 is the byte count after 64-byte chunks
-
-	beq	a2,t8,.Lchk8w	# if a2==t8, no 64-byte chunks
-				# There will be at most 1 32-byte chunk after it
-	 subu	a3,a2,t8	# subtract from a2 the reminder
-                                # Here a3 counts bytes in 16w chunks
-	addu	a3,a0,a3	# Now a3 is the final dst after 64-byte chunks
-
-	addu	t0,a0,a2	# t0 is the "past the end" address
-
-# When in the loop we exercise "pref 30,x(a0)", the a0+x should not be past
-# the "t0-32" address
-# This means: for x=128 the last "safe" a0 address is "t0-160"
-# Alternatively, for x=64 the last "safe" a0 address is "t0-96"
-# In the current version we will use "pref 30,128(a0)", so "t0-160" is the limit
-	subu	t9,t0,160	# t9 is the "last safe pref 30,128(a0)" address
-
-	pref    0,0(a1)		# bring the first line of src, addr 0
-	pref    0,32(a1)	# bring the second line of src, addr 32
-	pref    0,64(a1)	# bring the third line of src, addr 64
-	pref	30,32(a0)	# safe, as we have at least 64 bytes ahead
-# In case the a0 > t9 don't use "pref 30" at all
-	sgtu	v1,a0,t9
-	bgtz	v1,.Lloop16w	# skip "pref 30,64(a0)" for too short arrays
-	 nop
-# otherwise, start with using pref30
-	pref	30,64(a0)
-.Lloop16w:
-	pref	0,96(a1)
-	lw	t0,0(a1)
-	bgtz	v1,.Lskip_pref30_96	# skip "pref 30,96(a0)"
-	 lw	t1,4(a1)
-	pref    30,96(a0)   # continue setting up the dest, addr 96
-.Lskip_pref30_96:
-	lw	t2,8(a1)
-	lw	t3,12(a1)
-	lw	t4,16(a1)
-	lw	t5,20(a1)
-	lw	t6,24(a1)
-	lw	t7,28(a1)
-        pref    0,128(a1)    # bring the next lines of src, addr 128
-
-	sw	t0,0(a0)
-	sw	t1,4(a0)
-	sw	t2,8(a0)
-	sw	t3,12(a0)
-	sw	t4,16(a0)
-	sw	t5,20(a0)
-	sw	t6,24(a0)
-	sw	t7,28(a0)
-
-	lw	t0,32(a1)
-	bgtz	v1,.Lskip_pref30_128	# skip "pref 30,128(a0)"
-	 lw	t1,36(a1)
-	pref    30,128(a0)   # continue setting up the dest, addr 128
-.Lskip_pref30_128:
-	lw	t2,40(a1)
-	lw	t3,44(a1)
-	lw	t4,48(a1)
-	lw	t5,52(a1)
-	lw	t6,56(a1)
-	lw	t7,60(a1)
-        pref    0, 160(a1)    # bring the next lines of src, addr 160
-
-	sw	t0,32(a0)
-	sw	t1,36(a0)
-	sw	t2,40(a0)
-	sw	t3,44(a0)
-	sw	t4,48(a0)
-	sw	t5,52(a0)
-	sw	t6,56(a0)
-	sw	t7,60(a0)
-
-	addiu	a0,a0,64	# adding 64 to dest
-	sgtu	v1,a0,t9
-	bne	a0,a3,.Lloop16w
-	 addiu	a1,a1,64	# adding 64 to src
-	move	a2,t8
-
-# Here we have src and dest word-aligned but less than 64-bytes to go
-
-.Lchk8w:
-	pref 0, 0x0(a1)
-	andi	t8,a2,0x1f	# is there a 32-byte chunk?
-				# the t8 is the reminder count past 32-bytes
-	beq	a2,t8,.Lchk1w	# when a2=t8, no 32-byte chunk
-	 nop
-
-	lw	t0,0(a1)
-	lw	t1,4(a1)
-	lw	t2,8(a1)
-	lw	t3,12(a1)
-	lw	t4,16(a1)
-	lw	t5,20(a1)
-	lw	t6,24(a1)
-	lw	t7,28(a1)
-	addiu	a1,a1,32
-
-	sw	t0,0(a0)
-	sw	t1,4(a0)
-	sw	t2,8(a0)
-	sw	t3,12(a0)
-	sw	t4,16(a0)
-	sw	t5,20(a0)
-	sw	t6,24(a0)
-	sw	t7,28(a0)
-	addiu	a0,a0,32
-
-.Lchk1w:
-	andi	a2,t8,0x3	# now a2 is the reminder past 1w chunks
-	beq	a2,t8,.Llast8
-	 subu	a3,t8,a2	# a3 is count of bytes in 1w chunks
-	addu	a3,a0,a3	# now a3 is the dst address past the 1w chunks
-
-# copying in words (4-byte chunks)
-.LwordCopy_loop:
-	lw	t3,0(a1)	# the first t3 may be equal t0 ... optimize?
-	addiu	a1,a1,4
-	addiu	a0,a0,4
-	bne	a0,a3,.LwordCopy_loop
-	 sw	t3,-4(a0)
-
-# For the last (<8) bytes
-.Llast8:
-	blez	a2,.Lleave
-	 addu	a3,a0,a2	# a3 is the last dst address
-.Llast8loop:
-	lb	v1,0(a1)
-	addiu	a1,a1,1
-	addiu	a0,a0,1
-	bne	a0,a3,.Llast8loop
-	 sb	v1,-1(a0)
-
-.Lleave:
-	j	ra
-	 nop
-
-#
-# UNALIGNED case
-#
-
-.Lunaligned:
-	# got here with a3="negu a0"
-	andi	a3,a3,0x3	# test if the a0 is word aligned
-	beqz	a3,.Lua_chk16w
-	 subu	a2,a2,a3	# bytes left after initial a3 bytes
-
-	LWHI	v1,0(a1)
-	LWLO	v1,3(a1)
-	addu	a1,a1,a3	# a3 may be here 1, 2 or 3
-	SWHI	v1,0(a0)
-	addu	a0,a0,a3	# below the dst will be word aligned (NOTE1)
-
-.Lua_chk16w:
-	andi	t8,a2,0x3f	# any whole 64-byte chunks?
-				# t8 is the byte count after 64-byte chunks
-	beq	a2,t8,.Lua_chk8w # if a2==t8, no 64-byte chunks
-				# There will be at most 1 32-byte chunk after it
-	 subu	a3,a2,t8	# subtract from a2 the reminder
-                                # Here a3 counts bytes in 16w chunks
-	addu	a3,a0,a3	# Now a3 is the final dst after 64-byte chunks
-
-	addu	t0,a0,a2	# t0 is the "past the end" address
-
-	subu	t9,t0,160	# t9 is the "last safe pref 30,128(a0)" address
-
-	pref    0,0(a1)		# bring the first line of src, addr 0
-	pref    0,32(a1)	# bring the second line of src, addr 32
-	pref    0,64(a1)	# bring the third line of src, addr 64
-	pref	30,32(a0)	# safe, as we have at least 64 bytes ahead
-# In case the a0 > t9 don't use "pref 30" at all
-	sgtu	v1,a0,t9
-	bgtz	v1,.Lua_loop16w	# skip "pref 30,64(a0)" for too short arrays
-	 nop
-# otherwise, start with using pref30
-	pref	30,64(a0)
-.Lua_loop16w:
-	pref	0,96(a1)
-	LWHI	t0,0(a1)
-	LWLO	t0,3(a1)
-	LWHI	t1,4(a1)
-	bgtz	v1,.Lua_skip_pref30_96
-	 LWLO	t1,7(a1)
-	pref    30,96(a0)   # continue setting up the dest, addr 96
-.Lua_skip_pref30_96:
-	LWHI	t2,8(a1)
-	LWLO	t2,11(a1)
-	LWHI	t3,12(a1)
-	LWLO	t3,15(a1)
-	LWHI	t4,16(a1)
-	LWLO	t4,19(a1)
-	LWHI	t5,20(a1)
-	LWLO	t5,23(a1)
-	LWHI	t6,24(a1)
-	LWLO	t6,27(a1)
-	LWHI	t7,28(a1)
-	LWLO	t7,31(a1)
-        pref    0,128(a1)    # bring the next lines of src, addr 128
-
-	sw	t0,0(a0)
-	sw	t1,4(a0)
-	sw	t2,8(a0)
-	sw	t3,12(a0)
-	sw	t4,16(a0)
-	sw	t5,20(a0)
-	sw	t6,24(a0)
-	sw	t7,28(a0)
-
-	LWHI	t0,32(a1)
-	LWLO	t0,35(a1)
-	LWHI	t1,36(a1)
-	bgtz	v1,.Lua_skip_pref30_128
-	LWLO	t1,39(a1)
-	pref    30,128(a0)   # continue setting up the dest, addr 128
-.Lua_skip_pref30_128:
-	LWHI	t2,40(a1)
-	LWLO	t2,43(a1)
-	LWHI	t3,44(a1)
-	LWLO	t3,47(a1)
-	LWHI	t4,48(a1)
-	LWLO	t4,51(a1)
-	LWHI	t5,52(a1)
-	LWLO	t5,55(a1)
-	LWHI	t6,56(a1)
-	LWLO	t6,59(a1)
-	LWHI	t7,60(a1)
-	LWLO	t7,63(a1)
-        pref    0, 160(a1)    # bring the next lines of src, addr 160
-
-	sw	t0,32(a0)
-	sw	t1,36(a0)
-	sw	t2,40(a0)
-	sw	t3,44(a0)
-	sw	t4,48(a0)
-	sw	t5,52(a0)
-	sw	t6,56(a0)
-	sw	t7,60(a0)
-
-	addiu	a0,a0,64	# adding 64 to dest
-	sgtu	v1,a0,t9
-	bne	a0,a3,.Lua_loop16w
-	 addiu	a1,a1,64	# adding 64 to src
-	move	a2,t8
-
-# Here we have src and dest word-aligned but less than 64-bytes to go
-
-.Lua_chk8w:
-	pref 0, 0x0(a1)
-	andi	t8,a2,0x1f	# is there a 32-byte chunk?
-				# the t8 is the reminder count
-	beq	a2,t8,.Lua_chk1w # when a2=t8, no 32-byte chunk
-	 nop
-
-	LWHI	t0,0(a1)
-	LWLO	t0,3(a1)
-	LWHI	t1,4(a1)
-	LWLO	t1,7(a1)
-	LWHI	t2,8(a1)
-	LWLO	t2,11(a1)
-	LWHI	t3,12(a1)
-	LWLO	t3,15(a1)
-	LWHI	t4,16(a1)
-	LWLO	t4,19(a1)
-	LWHI	t5,20(a1)
-	LWLO	t5,23(a1)
-	LWHI	t6,24(a1)
-	LWLO	t6,27(a1)
-	LWHI	t7,28(a1)
-	LWLO	t7,31(a1)
-	addiu	a1,a1,32
-
-	sw	t0,0(a0)
-	sw	t1,4(a0)
-	sw	t2,8(a0)
-	sw	t3,12(a0)
-	sw	t4,16(a0)
-	sw	t5,20(a0)
-	sw	t6,24(a0)
-	sw	t7,28(a0)
-	addiu	a0,a0,32
-
-.Lua_chk1w:
-	andi	a2,t8,0x3	# now a2 is the reminder past 1w chunks
-	beq	a2,t8,.Lua_smallCopy
-	 subu	a3,t8,a2	# a3 is count of bytes in 1w chunks
-	addu	a3,a0,a3	# now a3 is the dst address past the 1w chunks
-
-# copying in words (4-byte chunks)
-.Lua_wordCopy_loop:
-	LWHI	v1,0(a1)
-	LWLO	v1,3(a1)
-	addiu	a1,a1,4
-	addiu	a0,a0,4		# note: dst=a0 is word aligned here, see NOTE1
-	bne	a0,a3,.Lua_wordCopy_loop
-	 sw	v1,-4(a0)
-
-# Now less than 4 bytes (value in a2) left to copy
-.Lua_smallCopy:
-	beqz	a2,.Lleave
-	addu	a3,a0,a2	# a3 is the last dst address
-.Lua_smallCopy_loop:
-	lb	v1,0(a1)
-	addiu	a1,a1,1
-	addiu	a0,a0,1
-	bne	a0,a3,.Lua_smallCopy_loop
-	 sb	v1,-1(a0)
-
-	j	ra
-	 nop
-
-	.set	at
-	.set	reorder
-
-END(memcpy)
-
-
-/************************************************************************
- *  Implementation : Static functions
- ************************************************************************/

libc/arch-mips64/string/memset.S

@@ -1,242 +0,0 @@
-/*
- * Copyright (c) 2009
- *      MIPS Technologies, Inc., California.
- *
- * 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. Neither the name of the MIPS Technologies, Inc., 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 MIPS TECHNOLOGIES, INC. ``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 MIPS TECHNOLOGIES, INC. 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.
- */
-
-/************************************************************************
- *
- *  memset.S, version "64h" with 1 cache line horizon for "pref 30" and 14 nops
- *  Version: "043009"
- *
- ************************************************************************/
-
-
-/************************************************************************
- *  Include files
- ************************************************************************/
-
-#include <private/bionic_asm.h>
-
-/*
- * This routine could be optimized for MIPS64. The current code only
- * uses MIPS32 instructions.
- */
-
-#if defined(__MIPSEB__)
-#  define SWHI	swl		/* high part is left in big-endian	*/
-#  define SWLO	swr		/* low part is right in big-endian	*/
-#endif
-
-#if defined(__MIPSEL__)
-#  define SWHI	swr		/* high part is right in little-endian	*/
-#  define SWLO	swl		/* low part is left in little-endian	*/
-#endif
-
-#if !(defined(XGPROF) || defined(XPROF))
-#undef SETUP_GP
-#define SETUP_GP
-#endif
-
-#ifdef NDEBUG
-#define DBG #
-#else
-#define DBG
-#endif
-
-LEAF(memset,0)
-
-	.set	noreorder
-	.set	noat
-
-	addu	t0,a0,a2		# t0 is the "past the end" address
-	slti	AT,a2,4			# is a2 less than 4?
-	bne	AT,zero,.Llast4		# if yes, go to last4
-	 move	v0,a0			# memset returns the dst pointer
-
-	beq	a1,zero,.Lset0
-	 subu	v1,zero,a0
-
-	# smear byte into 32 bit word
-#if (__mips==32) && (__mips_isa_rev>=2)
-	ins     a1, a1, 8, 8        # Replicate fill byte into half-word.
-	ins     a1, a1, 16, 16      # Replicate fill byte into word.
-#else
-	and	a1,0xff
-	sll	AT,a1,8
-	or	a1,AT
-	sll	AT,a1,16
-	or	a1,AT
-#endif
-
-.Lset0:
-	andi	v1,v1,0x3		# word-unaligned address?
-	beq	v1,zero,.Laligned	# v1 is the unalignment count
-	 subu	a2,a2,v1
-	SWHI	a1,0(a0)
-	addu	a0,a0,v1
-
-# Here we have the "word-aligned" a0 (until the "last4")
-.Laligned:
-	andi	t8,a2,0x3f	# any 64-byte chunks?
-				# t8 is the byte count past 64-byte chunks
-	beq	a2,t8,.Lchk8w	# when a2==t8, no 64-byte chunks
-				# There will be at most 1 32-byte chunk then
-	 subu	a3,a2,t8	# subtract from a2 the reminder
-				# Here a3 counts bytes in 16w chunks
-	addu	a3,a0,a3	# Now a3 is the final dst after 64-byte chunks
-
-# Find out, if there are any 64-byte chunks after which will be still at least
-# 96 bytes left. The value "96" is calculated as needed buffer for
-# "pref 30,64(a0)" prefetch, which can be used as "pref 30,0(a0)" after
-# incrementing "a0" by 64.
-# For "a2" below 160 there will be no such "pref 30 safe" 64-byte chunk.
-#
-	sltiu	v1,a2,160
-	bgtz	v1,.Lloop16w_nopref30	# skip "pref 30,0(a0)"
-	 subu	t7,a2,96	# subtract "pref 30 unsafe" region
-		# below we have at least 1 64-byte chunk which is "pref 30 safe"
-	andi	t6,t7,0x3f	# t6 is past "64-byte safe chunks" reminder
-	subu	t5,t7,t6	# subtract from t7 the reminder
-				# Here t5 counts bytes in 16w "safe" chunks
-	addu	t4,a0,t5	# Now t4 is the dst after 64-byte "safe" chunks
-
-# Don't use "pref 30,0(a0)" for a0 in a "middle" of a cache line
-#	pref	30,0(a0)
-# Here we are in the region, where it is safe to use "pref 30,64(a0)"
-.Lloop16w:
-	addiu	a0,a0,64
-	pref	30,-32(a0)	# continue setting up the dest, addr 64-32
-	sw	a1,-64(a0)
-	sw	a1,-60(a0)
-	sw	a1,-56(a0)
-	sw	a1,-52(a0)
-	sw	a1,-48(a0)
-	sw	a1,-44(a0)
-	sw	a1,-40(a0)
-	sw	a1,-36(a0)
-	nop
-	nop			# the extra nop instructions help to balance
-	nop			# cycles needed for "store" + "fill" + "evict"
-	nop			# For 64byte store there are needed 8 fill
-	nop			# and 8 evict cycles, i.e. at least 32 instr.
-	nop
-	nop
-	pref	30,0(a0)	# continue setting up the dest, addr 64-0
-	sw	a1,-32(a0)
-	sw	a1,-28(a0)
-	sw	a1,-24(a0)
-	sw	a1,-20(a0)
-	sw	a1,-16(a0)
-	sw	a1,-12(a0)
-	sw	a1,-8(a0)
-	sw	a1,-4(a0)
-	nop
-	nop
-	nop
-	nop			# NOTE: adding 14 nop-s instead of 12 nop-s
-	nop			# gives better results for "fast" memory
-	nop
-	bne	a0,t4,.Lloop16w
-	 nop
-
-	beq	a0,a3,.Lchk8w	# maybe no more 64-byte chunks?
-	 nop			# this "delayed slot" is useless ...
-
-.Lloop16w_nopref30:	# there could be up to 3 "64-byte nopref30" chunks
-	addiu	a0,a0,64
-	sw	a1,-64(a0)
-	sw	a1,-60(a0)
-	sw	a1,-56(a0)
-	sw	a1,-52(a0)
-	sw	a1,-48(a0)
-	sw	a1,-44(a0)
-	sw	a1,-40(a0)
-	sw	a1,-36(a0)
-	sw	a1,-32(a0)
-	sw	a1,-28(a0)
-	sw	a1,-24(a0)
-	sw	a1,-20(a0)
-	sw	a1,-16(a0)
-	sw	a1,-12(a0)
-	sw	a1,-8(a0)
-	bne	a0,a3,.Lloop16w_nopref30
-	 sw	a1,-4(a0)
-
-.Lchk8w:		# t8 here is the byte count past 64-byte chunks
-
-	andi	t7,t8,0x1f	# is there a 32-byte chunk?
-				# the t7 is the reminder count past 32-bytes
-	beq	t8,t7,.Lchk1w	# when t8==t7, no 32-byte chunk
-	 move	a2,t7
-
-	sw	a1,0(a0)
-	sw	a1,4(a0)
-	sw	a1,8(a0)
-	sw	a1,12(a0)
-	sw	a1,16(a0)
-	sw	a1,20(a0)
-	sw	a1,24(a0)
-	sw	a1,28(a0)
-	addiu	a0,a0,32
-
-.Lchk1w:
-	andi	t8,a2,0x3	# now t8 is the reminder past 1w chunks
-	beq	a2,t8,.Llast4aligned
-	 subu	a3,a2,t8	# a3 is the count of bytes in 1w chunks
-	addu	a3,a0,a3	# now a3 is the dst address past the 1w chunks
-
-# copying in words (4-byte chunks)
-.LwordCopy_loop:
-	addiu	a0,a0,4
-	bne	a0,a3,.LwordCopy_loop
-	 sw	a1,-4(a0)
-
-# store last 0-3 bytes
-# this will repeat the last store if the memset finishes on a word boundary
-.Llast4aligned:
-	j	ra
-	 SWLO	a1,-1(t0)
-
-.Llast4:
-	beq	a0,t0,.Llast4e
-.Llast4l:
-	 addiu	a0,a0,1
-	bne	a0,t0,.Llast4l
-	 sb	a1,-1(a0)
-.Llast4e:
-	j	ra
-	 nop
-
-	.set	at
-	.set	reorder
-
-END(memset)
-
-
-/************************************************************************
- *  Implementation : Static functions
- ************************************************************************/

libc/arch-mips64/string/mips-string-ops.h

@@ -1,148 +0,0 @@
-/*
- * Copyright (c) 2010 MIPS Technologies, Inc.
- *
- * 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 MIPS Technologies Inc. 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
- * 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 __MIPS_STRING_OPS_H
-#define __MIPS_STRING_OPS_H
-    /* This definition of the byte bitfields uses the
-       assumption that the layout of the bitfields is
-       equivalent to the layout in memory.  Generally,
-       for the MIPS ABIs, this is true. If you compile
-       the strcmp.c file with -DSMOKE_TEST_NEW_STRCMP,
-       this assumption will be tested.
-
-       Also, regardless of char signedness, ANSI C dictates that
-       strcmp() treats each character as unsigned char.  For
-       strlen and the like, signedness doesn't matter.
-
-       Also, this code assumes that there are 8-bits per 'char'.  */
-
-#if __mips64
-typedef struct bits
-{
-  unsigned long B0:8, B1:8, B2:8, B3:8, B4:8, B5:8, B6:8, B7:8;
-} bits_t;
-#else
-typedef struct bits
-{
-  unsigned long B0:8, B1:8, B2:8, B3:8;
-} bits_t;
-#endif
-
-#ifndef _ULW
-    /* for MIPS GCC, there is no unaligned builtins - so this code forces
-       the compiler to treat the pointer access as unaligned.  */
-struct ulw
-{
-  unsigned long b;
-} __attribute__ ((packed));
-
-#define _ULW(__x) ((struct ulw *) ((char *)(&__x)))->b;
-#endif
-
-/* This union assumes that small structures can be in registers.  If
-   not, then memory accesses will be done - not optimal, but ok.  */
-typedef union
-{
-  unsigned long v;
-  bits_t b;
-} bitfields_t;
-
-#ifndef detect_zero
-/* __mips_dsp, __mips_dspr2, and __mips64 are predefined by
-   the compiler, based on command line options.  */
-#if (__mips_dsp || __mips_dspr2) && !__mips64
-#define __mips_using_dsp 1
-
-/* DSP 4-lane (8 unsigned bits per line) subtract and saturate
- * Intrinsic operation. How this works:
- *     Given a 4-byte string of "ABC\0", subtract this as
- *     an unsigned integer from 0x01010101:
- *	   0x01010101
- *       - 0x41424300
- *        -----------
- (         0xbfbebe01 <-- answer without saturation
- *	   0x00000001 <-- answer with saturation
- * When this 4-lane vector is treated as an unsigned int value,
- * a non-zero answer indicates the presence of a zero in the
- * original 4-byte argument.  */
-
-typedef signed char v4i8 __attribute__ ((vector_size (4)));
-
-#define detect_zero(__x,__y,__01s,__80s)\
-       ((unsigned) __builtin_mips_subu_s_qb((v4i8) __01s,(v4i8) __x))
-
-    /* sets all 4 lanes to requested byte.  */
-#define set_byte_lanes(__x) ((unsigned) __builtin_mips_repl_qb(__x))
-
-    /* sets all 4 lanes to 0x01.  */
-#define def_and_set_01(__x) unsigned long __x = (unsigned) __builtin_mips_repl_qb(0x01)
-
-    /* sets all 4 lanes to 0x80. Not needed when subu_s.qb used. */
-#define def_and_set_80(__x) /* do nothing */
-
-#else
-    /* this version, originally published in the 80's, uses
-       a reverse-carry-set like determination of the zero byte.
-       The steps are, for __x = 0x31ff0001:
-       __x - _01s = 0x30fdff00
-       ~__x = 0xce00fffe
-       ((__x - _01s) & ~__x) = 0x0000ff00
-       x & _80s = 0x00008000 <- byte 3 was zero
-       Some implementaions naively assume that characters are
-       always 7-bit unsigned ASCII. With that assumption, the
-       "& ~x" is usually discarded. Since character strings
-       are 8-bit, the and is needed to catch the case of
-       a false positive when the byte is 0x80. */
-
-#define detect_zero(__x,__y,_01s,_80s)\
-	((unsigned) (((__x) - _01s) & ~(__x)) & _80s)
-
-#if __mips64
-#define def_and_set_80(__x) unsigned long __x =  0x8080808080808080ul
-#define def_and_set_01(__x)  unsigned long __x = 0x0101010101010101ul
-#else
-#define def_and_set_80(__x) unsigned long __x = 0x80808080ul
-#define def_and_set_01(__x) unsigned long __x = 0x01010101ul
-#endif
-
-#endif
-#endif
-
-/* dealing with 'void *' conversions without using extra variables. */
-#define get_byte(__x,__idx) (((unsigned char *) (__x))[__idx])
-#define set_byte(__x,__idx,__fill) ((unsigned char *) (__x))[__idx] = (__fill)
-#define get_word(__x,__idx) (((unsigned long *) (__x))[__idx])
-#define set_word(__x,__idx,__fill) ((unsigned long *) (__x))[__idx] = (__fill)
-#define inc_ptr_as(__type,__x,__inc) __x = (void *) (((__type) __x) + (__inc))
-#define cvt_ptr_to(__type,__x) ((__type) (__x))
-
-#endif

libc/arch-mips64/string/mips_strlen.c

@@ -1,224 +0,0 @@
-/*
- * Copyright (c) 2010 MIPS Technologies, Inc.
- *
- * 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 MIPS Technologies Inc. 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
- * 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 <string.h>
-#include "mips-string-ops.h"
-
-#define do_strlen_word(__av) {\
-    if (detect_zero(x,x,_01s,_80s)) break;\
-    x = __av;\
-    cnt += sizeof (unsigned);\
-    }
-
-#define do_strlen_byte(__x) {\
-  if ((bx.b.B##__x) == 0) break;\
-  ++cnt;\
-  }
-
-#if SMOKE_TEST_MIPS_STRLEN
-#define strlen my_strlen
-#endif
-
-size_t
-strlen (const char *_a)
-{
-  int cnt = 0;
-  unsigned long x;
-
-  /* align the string to word boundary so we can do word at a time.  */
-  if ((cvt_ptr_to (unsigned long, _a) & (sizeof (unsigned long) - 1)) != 0)
-    {
-      if ((cvt_ptr_to (unsigned long, _a) & 1) != 0)
-	{
-	  if (get_byte (_a, 0) == 0)
-	    return cnt;
-	  /* set bit 1 so 2-bytes are checked and incremented. */
-	  inc_ptr_as (char *, _a, 1);
-	  ++cnt;
-	}
-      if ((cvt_ptr_to (unsigned long, _a) & 2) != 0)
-	{
-	  if (get_byte (_a, 0) == 0)
-	    return cnt + 0;
-	  if (get_byte (_a, 1) == 0)
-	    return cnt + 1;
-	  inc_ptr_as (char *, _a, 2);
-	  cnt += 2;
-	}
-    }
-
-#if __mips64
-#error strlen: mips64 check for 4-byte alignment not implemented.
-#endif
-
-  if (1)
-    {
-      def_and_set_01 (_01s);
-      def_and_set_80 (_80s);
-
-      /* as advantagous as it is to performance, this code cannot pre-load
-         the following word, nor can it prefetch the next line at the start
-         of the loop since the string can be at the end of a page with the
-         following page unmapped. There are tests in the suite to catch
-         any attempt to go beyond the current word. */
-      x = get_word (_a, 0);
-      while (1)
-	{
-	  /* doing 8 words should cover most strings.  */
-	  do_strlen_word (get_word (_a, 1));
-	  do_strlen_word (get_word (_a, 2));
-	  do_strlen_word (get_word (_a, 3));
-	  do_strlen_word (get_word (_a, 4));
-	  do_strlen_word (get_word (_a, 5));
-	  do_strlen_word (get_word (_a, 6));
-	  do_strlen_word (get_word (_a, 7));
-	  do_strlen_word (get_word (_a, 8));
-	  inc_ptr_as (unsigned long*, _a, 8);
-	}
-    }
-  while (1)
-    {
-      /* pull apart the last word processed and find the zero.  */
-      bitfields_t bx;
-      bx.v = x;
-#if __mips64
-      do_strlen_byte (0);
-      do_strlen_byte (1);
-      do_strlen_byte (2);
-      do_strlen_byte (3);
-      do_strlen_byte (4);
-      do_strlen_byte (5);
-      do_strlen_byte (6);
-#else
-      do_strlen_byte (0);
-      do_strlen_byte (1);
-      do_strlen_byte (2);
-#endif
-      /* last byte is zero */
-      break;
-    }
-  return cnt;
-}
-
-#undef do_strlen_byte
-#undef do_strlen_word
-
-#if SMOKE_TEST_MIPS_STRLEN
-#include <stdio.h>
-char str1[] = "DHRYSTONE PROGRAM, 1'ST STRING";
-char str2[] = "DHRYSTONE PROGRAM, 2'ST STRING";
-
-char str3[] = "another string";
-char str4[] = "another";
-
-char str5[] = "somes tring";
-char str6[] = "somes_tring";
-
-char str7[16], str8[16];
-
-static char *
-chk (unsigned long mine, unsigned long libs, int *errors)
-{
-  static char answer[1024];
-  char *result = mine == libs ? "PASS" : "FAIL";
-  sprintf (answer, "new_strlen=%d: lib_strlen=%d: %s!", mine, libs, result);
-  if (mine != libs)
-    (*errors)++;
-  return answer;
-}
-
-int
-main (int argc, char **argv)
-{
-  int errors = 0;
-  /* set -1 in one position */
-  str6[5] = 0xff;
-  /* set zero in same position with junk in following 3 */
-  str7[0] = str8[0] = 0;
-  str7[1] = 0xff;
-  str7[2] = 'a';
-  str7[3] = 2;
-  str8[1] = 's';
-  str8[2] = -2;
-  str8[3] = 0;
-
-  fprintf (stderr, "========== mips_strlen%s test...\n",
-	   argv[0] ? argv[0] : "unknown strlen");
-#define P(__x,__y) {\
-    int a = my_strlen(__x + __y);\
-    int b = (strlen)(__x + __y) /* library version */;\
-    fprintf(stderr,"%s+%d: %s\n",#__x,__y,chk(a,b,&errors));\
-    }
-
-  P (str1, 0);
-  P (str1, 1);
-  P (str1, 2);
-  P (str1, 3);
-
-  P (str2, 0);
-  P (str2, 1);
-  P (str2, 2);
-  P (str2, 3);
-
-  P (str3, 0);
-  P (str3, 1);
-  P (str3, 2);
-  P (str3, 3);
-
-  P (str4, 0);
-  P (str4, 1);
-  P (str4, 2);
-  P (str4, 3);
-
-  P (str5, 0);
-  P (str5, 1);
-  P (str5, 2);
-  P (str5, 3);
-
-  P (str6, 0);
-  P (str6, 1);
-  P (str6, 2);
-  P (str6, 3);
-
-  P (str7, 0);
-  P (str7, 1);
-  P (str7, 2);
-  P (str7, 3);
-
-  P (str8, 0);
-  P (str8, 1);
-  P (str8, 2);
-  P (str8, 3);
-
-  return errors;
-}
-#endif

libc/arch-mips64/syscalls/___clock_nanosleep.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(__clock_nanosleep)
+ENTRY(___clock_nanosleep)
     .set push
     .set noreorder
     li v0, __NR_clock_nanosleep
@@ -22,5 +22,5 @@ ENTRY(__clock_nanosleep)
     j t9
     move ra, t0
     .set pop
-END(__clock_nanosleep)
-.hidden __clock_nanosleep
+END(___clock_nanosleep)
+.hidden ___clock_nanosleep

libc/arch-mips64/syscalls/___close.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(close)
+ENTRY(___close)
     .set push
     .set noreorder
     li v0, __NR_close
@@ -22,4 +22,5 @@ ENTRY(close)
     j t9
     move ra, t0
     .set pop
-END(close)
+END(___close)
+.hidden ___close

libc/arch-mips64/syscalls/___fgetxattr.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fgetxattr)
+ENTRY(___fgetxattr)
     .set push
     .set noreorder
     li v0, __NR_fgetxattr
@@ -22,4 +22,5 @@ ENTRY(fgetxattr)
     j t9
     move ra, t0
     .set pop
-END(fgetxattr)
+END(___fgetxattr)
+.hidden ___fgetxattr

libc/arch-mips64/syscalls/___fsetxattr.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fsetxattr)
+ENTRY(___fsetxattr)
     .set push
     .set noreorder
     li v0, __NR_fsetxattr
@@ -22,4 +22,5 @@ ENTRY(fsetxattr)
     j t9
     move ra, t0
     .set pop
-END(fsetxattr)
+END(___fsetxattr)
+.hidden ___fsetxattr

libc/arch-mips64/syscalls/___rt_sigqueueinfo.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(__rt_sigqueueinfo)
+ENTRY(___rt_sigqueueinfo)
     .set push
     .set noreorder
     li v0, __NR_rt_sigqueueinfo
@@ -22,5 +22,5 @@ ENTRY(__rt_sigqueueinfo)
     j t9
     move ra, t0
     .set pop
-END(__rt_sigqueueinfo)
-.hidden __rt_sigqueueinfo
+END(___rt_sigqueueinfo)
+.hidden ___rt_sigqueueinfo

libc/arch-mips64/syscalls/process_vm_readv.S

@@ -0,0 +1,25 @@
+/* Generated by gensyscalls.py. Do not edit. */
+
+#include <private/bionic_asm.h>
+
+ENTRY(process_vm_readv)
+    .set push
+    .set noreorder
+    li v0, __NR_process_vm_readv
+    syscall
+    bnez a3, 1f
+    move a0, v0
+    j ra
+    nop
+1:
+    move t0, ra
+    bal     2f
+    nop
+2:
+    .cpsetup ra, t1, 2b
+    LA t9,__set_errno_internal
+    .cpreturn
+    j t9
+    move ra, t0
+    .set pop
+END(process_vm_readv)

libc/arch-mips64/syscalls/process_vm_writev.S

@@ -0,0 +1,25 @@
+/* Generated by gensyscalls.py. Do not edit. */
+
+#include <private/bionic_asm.h>
+
+ENTRY(process_vm_writev)
+    .set push
+    .set noreorder
+    li v0, __NR_process_vm_writev
+    syscall
+    bnez a3, 1f
+    move a0, v0
+    j ra
+    nop
+1:
+    move t0, ra
+    bal     2f
+    nop
+2:
+    .cpsetup ra, t1, 2b
+    LA t9,__set_errno_internal
+    .cpreturn
+    j t9
+    move ra, t0
+    .set pop
+END(process_vm_writev)

libc/arch-x86/bionic/__bionic_clone.S

@@ -3,8 +3,14 @@
 // pid_t __bionic_clone(int flags, void* child_stack, pid_t* parent_tid, void* tls, pid_t* child_tid, int (*fn)(void*), void* arg);
 ENTRY(__bionic_clone)
         pushl   %ebx
+        .cfi_adjust_cfa_offset 4
+        .cfi_rel_offset ebx, 0
         pushl   %esi
+        .cfi_adjust_cfa_offset 4
+        .cfi_rel_offset esi, 0
         pushl   %edi
+        .cfi_adjust_cfa_offset 4
+        .cfi_rel_offset edi, 0
 
         # Load system call arguments into registers.
         movl    16(%esp), %ebx   # flags
@@ -46,8 +52,14 @@ ENTRY(__bionic_clone)
         # We're the parent; nothing to do.
 .L_bc_return:
         popl    %edi
+        .cfi_adjust_cfa_offset -4
+        .cfi_restore edi
         popl    %esi
+        .cfi_adjust_cfa_offset -4
+        .cfi_restore esi
         popl    %ebx
+        .cfi_adjust_cfa_offset -4
+        .cfi_restore ebx
         ret
 END(__bionic_clone)
 .hidden __bionic_clone

libc/arch-x86/bionic/syscall.S

@@ -15,9 +15,17 @@
 ENTRY(syscall)
     # Push the callee save registers.
     push    %ebx
+    .cfi_adjust_cfa_offset 4
+    .cfi_rel_offset ebx, 0
     push    %esi
+    .cfi_adjust_cfa_offset 4
+    .cfi_rel_offset esi, 0
     push    %edi
+    .cfi_adjust_cfa_offset 4
+    .cfi_rel_offset edi, 0
     push    %ebp
+    .cfi_adjust_cfa_offset 4
+    .cfi_rel_offset ebp, 0
 
     # Load all the arguments from the calling frame.
     # (Not all will be valid, depending on the syscall.)
@@ -43,8 +51,16 @@ ENTRY(syscall)
 1:
     # Restore the callee save registers.
     pop    %ebp
+    .cfi_adjust_cfa_offset -4
+    .cfi_restore ebp
     pop    %edi
+    .cfi_adjust_cfa_offset -4
+    .cfi_restore edi
     pop    %esi
+    .cfi_adjust_cfa_offset -4
+    .cfi_restore esi
     pop    %ebx
+    .cfi_adjust_cfa_offset -4
+    .cfi_restore ebx
     ret
 END(syscall)

libc/arch-x86/bionic/vfork.S

@@ -32,6 +32,8 @@
 
 ENTRY(vfork)
   popl    %ecx  // Grab the return address.
+  .cfi_adjust_cfa_offset 4
+  .cfi_rel_offset ecx, 0
   movl    $__NR_vfork, %eax
   int     $0x80
   cmpl    $-MAX_ERRNO, %eax

libc/arch-x86/syscalls/___clock_nanosleep.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(__clock_nanosleep)
+ENTRY(___clock_nanosleep)
     pushl   %ebx
     .cfi_def_cfa_offset 8
     .cfi_rel_offset ebx, 0
@@ -33,4 +33,5 @@ ENTRY(__clock_nanosleep)
     popl    %ecx
     popl    %ebx
     ret
-END(__clock_nanosleep)
+END(___clock_nanosleep)
+.hidden ___clock_nanosleep

libc/arch-x86/syscalls/___close.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(close)
+ENTRY(___close)
     pushl   %ebx
     .cfi_def_cfa_offset 8
     .cfi_rel_offset ebx, 0
@@ -18,4 +18,5 @@ ENTRY(close)
 1:
     popl    %ebx
     ret
-END(close)
+END(___close)
+.hidden ___close

libc/arch-x86/syscalls/___fgetxattr.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fgetxattr)
+ENTRY(___fgetxattr)
     pushl   %ebx
     .cfi_def_cfa_offset 8
     .cfi_rel_offset ebx, 0
@@ -33,4 +33,5 @@ ENTRY(fgetxattr)
     popl    %ecx
     popl    %ebx
     ret
-END(fgetxattr)
+END(___fgetxattr)
+.hidden ___fgetxattr

libc/arch-x86/syscalls/___fsetxattr.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fsetxattr)
+ENTRY(___fsetxattr)
     pushl   %ebx
     .cfi_def_cfa_offset 8
     .cfi_rel_offset ebx, 0
@@ -38,4 +38,5 @@ ENTRY(fsetxattr)
     popl    %ecx
     popl    %ebx
     ret
-END(fsetxattr)
+END(___fsetxattr)
+.hidden ___fsetxattr

libc/arch-x86/syscalls/___rt_sigqueueinfo.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(__rt_sigqueueinfo)
+ENTRY(___rt_sigqueueinfo)
     pushl   %ebx
     .cfi_def_cfa_offset 8
     .cfi_rel_offset ebx, 0
@@ -28,4 +28,5 @@ ENTRY(__rt_sigqueueinfo)
     popl    %ecx
     popl    %ebx
     ret
-END(__rt_sigqueueinfo)
+END(___rt_sigqueueinfo)
+.hidden ___rt_sigqueueinfo

libc/arch-x86/syscalls/ftruncate.S

@@ -1,26 +0,0 @@
-/* Generated by gensyscalls.py. Do not edit. */
-
-#include <private/bionic_asm.h>
-
-ENTRY(ftruncate)
-    pushl   %ebx
-    .cfi_def_cfa_offset 8
-    .cfi_rel_offset ebx, 0
-    pushl   %ecx
-    .cfi_adjust_cfa_offset 4
-    .cfi_rel_offset ecx, 0
-    mov     12(%esp), %ebx
-    mov     16(%esp), %ecx
-    movl    $__NR_ftruncate, %eax
-    int     $0x80
-    cmpl    $-MAX_ERRNO, %eax
-    jb      1f
-    negl    %eax
-    pushl   %eax
-    call    __set_errno_internal
-    addl    $4, %esp
-1:
-    popl    %ecx
-    popl    %ebx
-    ret
-END(ftruncate)

libc/arch-x86/syscalls/process_vm_readv.S

@@ -0,0 +1,46 @@
+/* Generated by gensyscalls.py. Do not edit. */
+
+#include <private/bionic_asm.h>
+
+ENTRY(process_vm_readv)
+    pushl   %ebx
+    .cfi_def_cfa_offset 8
+    .cfi_rel_offset ebx, 0
+    pushl   %ecx
+    .cfi_adjust_cfa_offset 4
+    .cfi_rel_offset ecx, 0
+    pushl   %edx
+    .cfi_adjust_cfa_offset 4
+    .cfi_rel_offset edx, 0
+    pushl   %esi
+    .cfi_adjust_cfa_offset 4
+    .cfi_rel_offset esi, 0
+    pushl   %edi
+    .cfi_adjust_cfa_offset 4
+    .cfi_rel_offset edi, 0
+    pushl   %ebp
+    .cfi_adjust_cfa_offset 4
+    .cfi_rel_offset ebp, 0
+    mov     28(%esp), %ebx
+    mov     32(%esp), %ecx
+    mov     36(%esp), %edx
+    mov     40(%esp), %esi
+    mov     44(%esp), %edi
+    mov     48(%esp), %ebp
+    movl    $__NR_process_vm_readv, %eax
+    int     $0x80
+    cmpl    $-MAX_ERRNO, %eax
+    jb      1f
+    negl    %eax
+    pushl   %eax
+    call    __set_errno_internal
+    addl    $4, %esp
+1:
+    popl    %ebp
+    popl    %edi
+    popl    %esi
+    popl    %edx
+    popl    %ecx
+    popl    %ebx
+    ret
+END(process_vm_readv)

libc/arch-x86/syscalls/process_vm_writev.S

@@ -0,0 +1,46 @@
+/* Generated by gensyscalls.py. Do not edit. */
+
+#include <private/bionic_asm.h>
+
+ENTRY(process_vm_writev)
+    pushl   %ebx
+    .cfi_def_cfa_offset 8
+    .cfi_rel_offset ebx, 0
+    pushl   %ecx
+    .cfi_adjust_cfa_offset 4
+    .cfi_rel_offset ecx, 0
+    pushl   %edx
+    .cfi_adjust_cfa_offset 4
+    .cfi_rel_offset edx, 0
+    pushl   %esi
+    .cfi_adjust_cfa_offset 4
+    .cfi_rel_offset esi, 0
+    pushl   %edi
+    .cfi_adjust_cfa_offset 4
+    .cfi_rel_offset edi, 0
+    pushl   %ebp
+    .cfi_adjust_cfa_offset 4
+    .cfi_rel_offset ebp, 0
+    mov     28(%esp), %ebx
+    mov     32(%esp), %ecx
+    mov     36(%esp), %edx
+    mov     40(%esp), %esi
+    mov     44(%esp), %edi
+    mov     48(%esp), %ebp
+    movl    $__NR_process_vm_writev, %eax
+    int     $0x80
+    cmpl    $-MAX_ERRNO, %eax
+    jb      1f
+    negl    %eax
+    pushl   %eax
+    call    __set_errno_internal
+    addl    $4, %esp
+1:
+    popl    %ebp
+    popl    %edi
+    popl    %esi
+    popl    %edx
+    popl    %ecx
+    popl    %ebx
+    ret
+END(process_vm_writev)

libc/arch-x86_64/string/ssse3-strcmp-slm.S

@@ -1897,8 +1897,8 @@ L(strcmp_exitz):
 
 	.p2align 4
 L(Byte0):
-	movzx	(%rsi), %ecx
-	movzx	(%rdi), %eax
+	movzbl	(%rsi), %ecx
+	movzbl	(%rdi), %eax
 
 	sub	%ecx, %eax
 	ret

libc/arch-x86_64/syscalls/___clock_nanosleep.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(__clock_nanosleep)
+ENTRY(___clock_nanosleep)
     movq    %rcx, %r10
     movl    $__NR_clock_nanosleep, %eax
     syscall
@@ -13,5 +13,5 @@ ENTRY(__clock_nanosleep)
     call    __set_errno_internal
 1:
     ret
-END(__clock_nanosleep)
-.hidden __clock_nanosleep
+END(___clock_nanosleep)
+.hidden ___clock_nanosleep

libc/arch-x86_64/syscalls/___close.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(close)
+ENTRY(___close)
     movl    $__NR_close, %eax
     syscall
     cmpq    $-MAX_ERRNO, %rax
@@ -12,4 +12,5 @@ ENTRY(close)
     call    __set_errno_internal
 1:
     ret
-END(close)
+END(___close)
+.hidden ___close

libc/arch-x86_64/syscalls/___fgetxattr.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fgetxattr)
+ENTRY(___fgetxattr)
     movq    %rcx, %r10
     movl    $__NR_fgetxattr, %eax
     syscall
@@ -13,4 +13,5 @@ ENTRY(fgetxattr)
     call    __set_errno_internal
 1:
     ret
-END(fgetxattr)
+END(___fgetxattr)
+.hidden ___fgetxattr

libc/arch-x86_64/syscalls/___fsetxattr.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fsetxattr)
+ENTRY(___fsetxattr)
     movq    %rcx, %r10
     movl    $__NR_fsetxattr, %eax
     syscall
@@ -13,4 +13,5 @@ ENTRY(fsetxattr)
     call    __set_errno_internal
 1:
     ret
-END(fsetxattr)
+END(___fsetxattr)
+.hidden ___fsetxattr

libc/arch-x86_64/syscalls/___rt_sigqueueinfo.S

@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(__rt_sigqueueinfo)
+ENTRY(___rt_sigqueueinfo)
     movl    $__NR_rt_sigqueueinfo, %eax
     syscall
     cmpq    $-MAX_ERRNO, %rax
@@ -12,5 +12,5 @@ ENTRY(__rt_sigqueueinfo)
     call    __set_errno_internal
 1:
     ret
-END(__rt_sigqueueinfo)
-.hidden __rt_sigqueueinfo
+END(___rt_sigqueueinfo)
+.hidden ___rt_sigqueueinfo

libc/arch-x86_64/syscalls/process_vm_readv.S

@@ -0,0 +1,16 @@
+/* Generated by gensyscalls.py. Do not edit. */
+
+#include <private/bionic_asm.h>
+
+ENTRY(process_vm_readv)
+    movq    %rcx, %r10
+    movl    $__NR_process_vm_readv, %eax
+    syscall
+    cmpq    $-MAX_ERRNO, %rax
+    jb      1f
+    negl    %eax
+    movl    %eax, %edi
+    call    __set_errno_internal
+1:
+    ret
+END(process_vm_readv)

libc/arch-x86_64/syscalls/process_vm_writev.S

@@ -0,0 +1,16 @@
+/* Generated by gensyscalls.py. Do not edit. */
+
+#include <private/bionic_asm.h>
+
+ENTRY(process_vm_writev)
+    movq    %rcx, %r10
+    movl    $__NR_process_vm_writev, %eax
+    syscall
+    cmpq    $-MAX_ERRNO, %rax
+    jb      1f
+    negl    %eax
+    movl    %eax, %edi
+    call    __set_errno_internal
+1:
+    ret
+END(process_vm_writev)

libc/bionic/__cxa_thread_atexit_impl.cpp

@@ -22,7 +22,7 @@ struct thread_local_dtor {
   thread_local_dtor* next;
 };
 
-__thread thread_local_dtor* thread_local_dtors = nullptr;
+static __thread thread_local_dtor* thread_local_dtors = nullptr;
 
 extern "C" int __cxa_thread_atexit_impl(void (*func) (void *), void *arg, void *dso_handle) {
   thread_local_dtor* dtor = new thread_local_dtor();

libc/bionic/__memchr_chk.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008 The Android Open Source Project
+ * Copyright (C) 2015 The Android Open Source Project
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -25,20 +25,15 @@
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
+
+#undef _FORTIFY_SOURCE
 #include <string.h>
-#include <stdint.h>
+#include "private/libc_logging.h"
 
-void*  memset(void*  dst, int c, size_t n)
-{
-    char*  q   = dst;
-    char*  end = q + n;
+extern "C" void* __memchr_chk(const void* s, int c, size_t n, size_t buf_size) {
+  if (__predict_false(n > buf_size)) {
+    __fortify_chk_fail("memchr: prevented read past end of buffer", 0);
+  }
 
-    for (;;) {
-        if (q >= end) break; *q++ = (char) c;
-        if (q >= end) break; *q++ = (char) c;
-        if (q >= end) break; *q++ = (char) c;
-        if (q >= end) break; *q++ = (char) c;
-    }
-
-  return dst;
+  return memchr(s, c, n);
 }

libc/bionic/__memrchr_chk.cpp

@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+#undef _FORTIFY_SOURCE
+#include <string.h>
+#include "private/libc_logging.h"
+
+extern "C" void* __memrchr_chk(const void* s, int c, size_t n, size_t buf_size) {
+  if (__predict_false(n > buf_size)) {
+    __fortify_chk_fail("memrchr: prevented read past end of buffer", 0);
+  }
+
+  return memrchr(s, c, n);
+}

libc/bionic/__pread64_chk.cpp

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+#undef _FORTIFY_SOURCE
+#include <unistd.h>
+#include "private/libc_logging.h"
+
+extern "C" ssize_t __pread64_chk(int fd, void* buf, size_t count, off64_t offset, size_t buf_size) {
+  if (__predict_false(count > buf_size)) {
+    __fortify_chk_fail("pread64: prevented write past end of buffer", 0);
+  }
+
+  if (__predict_false(count > SSIZE_MAX)) {
+    __fortify_chk_fail("pread64: count > SSIZE_MAX", 0);
+  }
+
+  return pread64(fd, buf, count, offset);
+}

libc/bionic/__pread_chk.cpp

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+#undef _FORTIFY_SOURCE
+#include <unistd.h>
+#include "private/libc_logging.h"
+
+extern "C" ssize_t __pread_chk(int fd, void* buf, size_t count, off_t offset, size_t buf_size) {
+  if (__predict_false(count > buf_size)) {
+    __fortify_chk_fail("pread: prevented write past end of buffer", 0);
+  }
+
+  if (__predict_false(count > SSIZE_MAX)) {
+    __fortify_chk_fail("pread: count > SSIZE_MAX", 0);
+  }
+
+  return pread(fd, buf, count, offset);
+}

libc/bionic/__readlink_chk.cpp

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+#undef _FORTIFY_SOURCE
+#include <unistd.h>
+#include "private/libc_logging.h"
+
+extern "C" ssize_t __readlink_chk(const char* path, char* buf, size_t size, size_t buf_size) {
+  if (__predict_false(size > buf_size)) {
+    __fortify_chk_fail("readlink: prevented write past end of buffer", 0);
+  }
+
+  if (__predict_false(size > SSIZE_MAX)) {
+    __fortify_chk_fail("readlink: size > SSIZE_MAX", 0);
+  }
+
+  return readlink(path, buf, size);
+}

libc/bionic/__readlinkat_chk.cpp

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+#undef _FORTIFY_SOURCE
+#include <unistd.h>
+#include "private/libc_logging.h"
+
+extern "C" ssize_t __readlinkat_chk(int dirfd, const char* path, char* buf, size_t size, size_t buf_size) {
+  if (__predict_false(size > buf_size)) {
+    __fortify_chk_fail("readlinkat: prevented write past end of buffer", 0);
+  }
+
+  if (__predict_false(size > SSIZE_MAX)) {
+    __fortify_chk_fail("readlinkat: size > SSIZE_MAX", 0);
+  }
+
+  return readlinkat(dirfd, path, buf, size);
+}

libc/bionic/bionic_systrace.cpp

@@ -21,6 +21,7 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include "private/bionic_lock.h"
 #include "private/bionic_systrace.h"
 #include "private/libc_logging.h"
 
@@ -29,12 +30,17 @@
 
 #define WRITE_OFFSET   32
 
-static const prop_info* g_pinfo = NULL;
+constexpr char SYSTRACE_PROPERTY_NAME[] = "debug.atrace.tags.enableflags";
+
+static Lock g_lock;
+static const prop_info* g_pinfo;
 static uint32_t g_serial = -1;
-static uint64_t g_tags = 0;
+static uint64_t g_tags;
 static int g_trace_marker_fd = -1;
 
 static bool should_trace() {
+  bool result = false;
+  g_lock.lock();
   // If g_pinfo is null, this means that systrace hasn't been run and it's safe to
   // assume that no trace writing will need to take place.  However, to avoid running
   // this costly find check each time, we set it to a non-tracing value so that next
@@ -42,32 +48,39 @@ static bool should_trace() {
   // this function also deals with the bootup case, during which the call to property
   // set will fail if the property server hasn't yet started.
   if (g_pinfo == NULL) {
-    g_pinfo = __system_property_find("debug.atrace.tags.enableflags");
+    g_pinfo = __system_property_find(SYSTRACE_PROPERTY_NAME);
     if (g_pinfo == NULL) {
-      __system_property_set("debug.atrace.tags.enableflags", "0");
-      g_pinfo = __system_property_find("debug.atrace.tags.enableflags");
-      if (g_pinfo == NULL) {
-        return false;
-      }
+      __system_property_set(SYSTRACE_PROPERTY_NAME, "0");
+      g_pinfo = __system_property_find(SYSTRACE_PROPERTY_NAME);
     }
   }
-
-  // Find out which tags have been enabled on the command line and set
-  // the value of tags accordingly.  If the value of the property changes,
-  // the serial will also change, so the costly system_property_read function
-  // can be avoided by calling the much cheaper system_property_serial
-  // first.  The values within pinfo may change, but its location is guaranteed
-  // not to move.
-  const uint32_t cur_serial = __system_property_serial(g_pinfo);
-  if (cur_serial != g_serial) {
-    g_serial = cur_serial;
-    char value[PROP_VALUE_MAX];
-    __system_property_read(g_pinfo, 0, value);
-    g_tags = strtoull(value, NULL, 0);
+  if (g_pinfo != NULL) {
+    // Find out which tags have been enabled on the command line and set
+    // the value of tags accordingly.  If the value of the property changes,
+    // the serial will also change, so the costly system_property_read function
+    // can be avoided by calling the much cheaper system_property_serial
+    // first.  The values within pinfo may change, but its location is guaranteed
+    // not to move.
+    uint32_t cur_serial = __system_property_serial(g_pinfo);
+    if (cur_serial != g_serial) {
+      g_serial = cur_serial;
+      char value[PROP_VALUE_MAX];
+      __system_property_read(g_pinfo, 0, value);
+      g_tags = strtoull(value, NULL, 0);
+    }
+    result = ((g_tags & ATRACE_TAG_BIONIC) != 0);
   }
+  g_lock.unlock();
+  return result;
+}
 
-  // Finally, verify that this tag value enables bionic tracing.
-  return ((g_tags & ATRACE_TAG_BIONIC) != 0);
+static int get_trace_marker_fd() {
+  g_lock.lock();
+  if (g_trace_marker_fd == -1) {
+    g_trace_marker_fd = open("/sys/kernel/debug/tracing/trace_marker", O_CLOEXEC | O_WRONLY);
+  }
+  g_lock.unlock();
+  return g_trace_marker_fd;
 }
 
 ScopedTrace::ScopedTrace(const char* message) {
@@ -75,11 +88,9 @@ ScopedTrace::ScopedTrace(const char* message) {
     return;
   }
 
-  if (g_trace_marker_fd == -1) {
-    g_trace_marker_fd = open("/sys/kernel/debug/tracing/trace_marker", O_CLOEXEC | O_WRONLY);
-    if (g_trace_marker_fd == -1) {
-      __libc_fatal("Could not open kernel trace file: %s\n", strerror(errno));
-    }
+  int trace_marker_fd = get_trace_marker_fd();
+  if (trace_marker_fd == -1) {
+    return;
   }
 
   // If bionic tracing has been enabled, then write the message to the
@@ -87,12 +98,10 @@ ScopedTrace::ScopedTrace(const char* message) {
   int length = strlen(message);
   char buf[length + WRITE_OFFSET];
   size_t len = snprintf(buf, length + WRITE_OFFSET, "B|%d|%s", getpid(), message);
-  ssize_t wbytes = TEMP_FAILURE_RETRY(write(g_trace_marker_fd, buf, len));
 
-  // Error while writing
-  if (static_cast<size_t>(wbytes) != len) {
-    __libc_fatal("Could not write to kernel trace file: %s\n", strerror(errno));
-  }
+  // Tracing may stop just after checking property and before writing the message.
+  // So the write is acceptable to fail. See b/20666100.
+  TEMP_FAILURE_RETRY(write(trace_marker_fd, buf, len));
 }
 
 ScopedTrace::~ScopedTrace() {
@@ -100,10 +109,10 @@ ScopedTrace::~ScopedTrace() {
     return;
   }
 
-  ssize_t wbytes = TEMP_FAILURE_RETRY(write(g_trace_marker_fd, "E", 1));
-
-  // Error while writing
-  if (static_cast<size_t>(wbytes) != 1) {
-    __libc_fatal("Could not write to kernel trace file: %s\n", strerror(errno));
+  int trace_marker_fd = get_trace_marker_fd();
+  if (trace_marker_fd == -1) {
+    return;
   }
+
+  TEMP_FAILURE_RETRY(write(trace_marker_fd, "E", 1));
 }

libc/bionic/clock_nanosleep.cpp

@@ -30,9 +30,9 @@
 
 #include "private/ErrnoRestorer.h"
 
-extern "C" int __clock_nanosleep(clockid_t, int, const timespec*, timespec*);
+extern "C" int ___clock_nanosleep(clockid_t, int, const timespec*, timespec*);
 
 int clock_nanosleep(clockid_t clock_id, int flags, const timespec* in, timespec* out) {
   ErrnoRestorer errno_restorer;
-  return (__clock_nanosleep(clock_id, flags, in, out) == 0) ? 0 : errno;
+  return (___clock_nanosleep(clock_id, flags, in, out) == 0) ? 0 : errno;
 }

libc/bionic/close.cpp

@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2015 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 <errno.h>
+#include <unistd.h>
+
+extern "C" int ___close(int);
+
+int close(int fd) {
+  int rc = ___close(fd);
+  if (rc == -1 && errno == EINTR) {
+    // POSIX says that if close returns with EINTR, the fd must not be closed.
+    // Linus disagrees: http://lkml.indiana.edu/hypermail/linux/kernel/0509.1/0877.html
+    // The future POSIX solution is posix_close (http://austingroupbugs.net/view.php?id=529),
+    // with the state after EINTR being undefined, and EINPROGRESS for the case where close
+    // was interrupted by a signal but the file descriptor was actually closed.
+    // My concern with that future behavior is that it breaks existing code that assumes
+    // that close only returns -1 if it failed. Unlike other system calls, I have real
+    // difficulty even imagining a caller that would need to know that close was interrupted
+    // but succeeded. So returning EINTR is wrong (because Linux always closes) and EINPROGRESS
+    // is harmful because callers need to be rewritten to understand that EINPROGRESS isn't
+    // actually a failure, but will be reported as one.
+
+    // We don't restore errno because that would incur a cost (the TLS read) for every caller.
+    // Since callers don't know ahead of time whether close will legitimately fail, they need
+    // to have stashed the old errno value anyway if they plan on using it afterwards, so
+    // us clobbering errno here doesn't change anything in that respect.
+    return 0;
+  }
+  return rc;
+}