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MIPS support to libm, libdl and libthread_db

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Change-Id: I9106721af7fe0cd45df82976250db0d300a20117
Signed-off-by: Raghu Gandham <raghu@mips.com>
This commit is contained in:
Chris Dearman 2012-05-01 17:45:53 -07:00 committed by Raghu Gandham
parent 10579fc43d
commit 726800e8f4
7 changed files with 342 additions and 10 deletions
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4
libdl/libdl.c
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@ -26,11 +26,11 @@ int dlclose(void *handle) { return 0; }
#ifdef __arm__
void *dl_unwind_find_exidx(void *pc, int *pcount) { return 0; }
#elif defined(__i386__) || defined(__sh__)
#elif defined(__i386__) || defined(__sh__) || defined(__mips__)
/* we munge the cb definition so we don't have to include any headers here.
* It won't affect anything since these are just symbols anyway */
int dl_iterate_phdr(int (*cb)(void *info, void *size, void *data),
void *data) { return 0; }
#else
#error Unsupported architecture. Only arm and x86 are supported.
#error Unsupported architecture. Only mips, arm and x86 are supported.
#endif

25
libm/Android.mk
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@ -152,6 +152,7 @@ libm_common_src_files:= \
src/s_isnan.c \
src/s_modf.c
libm_common_cflags :=
ifeq ($(TARGET_ARCH),arm)
libm_common_src_files += \
@ -162,21 +163,29 @@ ifeq ($(TARGET_ARCH),arm)
src/s_scalbnf.c
libm_common_includes = $(LOCAL_PATH)/arm
endif
else
ifeq ($(TARGET_OS)-$(TARGET_ARCH),linux-x86)
libm_common_src_files += \
ifeq ($(TARGET_OS)-$(TARGET_ARCH),linux-x86)
libm_common_src_files += \
i387/fenv.c \
i387/s_scalbnl.S \
i387/s_scalbn.S \
i387/s_scalbnf.S
libm_common_includes = $(LOCAL_PATH)/i386 $(LOCAL_PATH)/i387
else
$(error "Unknown architecture")
endif
libm_common_includes = $(LOCAL_PATH)/i386 $(LOCAL_PATH)/i387
endif
ifeq ($(TARGET_ARCH),mips)
libm_common_src_files += \
mips/fenv.c \
src/e_ldexpf.c \
src/s_scalbln.c \
src/s_scalbn.c \
src/s_scalbnf.c
libm_common_includes = $(LOCAL_PATH)/mips
# Need to build *rint* functions
libm_common_cflags += -fno-builtin-rintf -fno-builtin-rint
endif
# libm.a
# ========================================================
@ -188,6 +197,7 @@ LOCAL_SRC_FILES := \
LOCAL_ARM_MODE := arm
LOCAL_C_INCLUDES += $(libm_common_includes)
LOCAL_CFLAGS := $(libm_common_cflags)
LOCAL_MODULE:= libm
@ -206,6 +216,7 @@ LOCAL_SRC_FILES := \
LOCAL_ARM_MODE := arm
LOCAL_C_INCLUDES += $(libm_common_includes)
LOCAL_CFLAGS := $(libm_common_cflags)
LOCAL_MODULE:= libm

3
libm/mips/Makefile.inc Normal file
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@ -0,0 +1,3 @@
# $FreeBSD: src/lib/msun/mips/Makefile.inc,v 1.1 2008/04/26 12:20:29 imp Exp $
LDBL_PREC = 53

56
libm/mips/_fpmath.h Normal file
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@ -0,0 +1,56 @@
/*-
* Copyright (c) 2002, 2003 David Schultz <das@FreeBSD.ORG>
* 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 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 AUTHOR 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.
*
* $FreeBSD: src/lib/libc/mips/_fpmath.h,v 1.1 2008/04/26 12:07:59 imp Exp $
*/
union IEEEl2bits {
long double e;
struct {
#ifndef __MIPSEB__
unsigned int manl :32;
unsigned int manh :20;
unsigned int exp :11;
unsigned int sign :1;
#else
unsigned int sign :1;
unsigned int exp :11;
unsigned int manh :20;
unsigned int manl :32;
#endif
} bits;
};
#define LDBL_NBIT 0
#define mask_nbit_l(u) ((void)0)
#define LDBL_IMPLICIT_NBIT
#define LDBL_MANH_SIZE 20
#define LDBL_MANL_SIZE 32
#define LDBL_TO_ARRAY32(u, a) do { \
(a)[0] = (uint32_t)(u).bits.manl; \
(a)[1] = (uint32_t)(u).bits.manh; \
} while(0)

35
libm/mips/fenv.c Normal file
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@ -0,0 +1,35 @@
/*-
* Copyright (c) 2004 David Schultz <das@FreeBSD.ORG>
* 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 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 AUTHOR 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.
*
* $FreeBSD: src/lib/msun/mips/fenv.c,v 1.1 2008/04/26 12:20:29 imp Exp $
*/
#include <fenv.h>
/*
* Hopefully the system ID byte is immutable, so it's valid to use
* this as a default environment.
*/
const fenv_t __fe_dfl_env = 0;

218
libm/mips/fenv.h Normal file
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@ -0,0 +1,218 @@
/*-
* Copyright (c) 2004-2005 David Schultz <das@FreeBSD.ORG>
* 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 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 AUTHOR 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.
*
* $FreeBSD: src/lib/msun/mips/fenv.h,v 1.1 2008/04/26 12:20:29 imp Exp $
*/
#ifndef _FENV_H_
#define _FENV_H_
#include <sys/_types.h>
typedef __uint32_t fenv_t;
typedef __uint32_t fexcept_t;
/* Exception flags */
#define FE_INVALID 0x0001
#define FE_DIVBYZERO 0x0002
#define FE_OVERFLOW 0x0004
#define FE_UNDERFLOW 0x0008
#define FE_INEXACT 0x0010
#define FE_ALL_EXCEPT (FE_DIVBYZERO | FE_INEXACT | \
FE_INVALID | FE_OVERFLOW | FE_UNDERFLOW)
/* Rounding modes */
#define FE_TONEAREST 0x0000
#define FE_TOWARDZERO 0x0001
#define FE_UPWARD 0x0002
#define FE_DOWNWARD 0x0003
#define _ROUND_MASK (FE_TONEAREST | FE_DOWNWARD | \
FE_UPWARD | FE_TOWARDZERO)
/* __BEGIN_DECLS */
/* Default floating-point environment */
extern const fenv_t __fe_dfl_env;
#define FE_DFL_ENV (&__fe_dfl_env)
/* We need to be able to map status flag positions to mask flag positions */
#define _FPUSW_SHIFT 16
#define _ENABLE_MASK (FE_ALL_EXCEPT << _FPUSW_SHIFT)
#ifdef ARM_HARD_FLOAT
#define __rfs(__fpsr) __asm __volatile("rfs %0" : "=r" (*(__fpsr)))
#define __wfs(__fpsr) __asm __volatile("wfs %0" : : "r" (__fpsr))
#else
#define __rfs(__fpsr)
#define __wfs(__fpsr)
#endif
static __inline int
feclearexcept(int __excepts)
{
fexcept_t __fpsr;
__rfs(&__fpsr);
__fpsr &= ~__excepts;
__wfs(__fpsr);
return (0);
}
static __inline int
fegetexceptflag(fexcept_t *__flagp, int __excepts)
{
fexcept_t __fpsr;
__rfs(&__fpsr);
*__flagp = __fpsr & __excepts;
return (0);
}
static __inline int
fesetexceptflag(const fexcept_t *__flagp, int __excepts)
{
fexcept_t __fpsr;
__rfs(&__fpsr);
__fpsr &= ~__excepts;
__fpsr |= *__flagp & __excepts;
__wfs(__fpsr);
return (0);
}
static __inline int
feraiseexcept(int __excepts)
{
fexcept_t __ex = __excepts;
fesetexceptflag(&__ex, __excepts); /* XXX */
return (0);
}
static __inline int
fetestexcept(int __excepts)
{
fexcept_t __fpsr;
__rfs(&__fpsr);
return (__fpsr & __excepts);
}
static __inline int
fegetround(void)
{
/*
* Apparently, the rounding mode is specified as part of the
* instruction format on ARM, so the dynamic rounding mode is
* indeterminate. Some FPUs may differ.
*/
return (-1);
}
static __inline int
fesetround(int __round)
{
return (-1);
}
static __inline int
fegetenv(fenv_t *__envp)
{
__rfs(__envp);
return (0);
}
static __inline int
feholdexcept(fenv_t *__envp)
{
fenv_t __env;
__rfs(&__env);
*__envp = __env;
__env &= ~(FE_ALL_EXCEPT | _ENABLE_MASK);
__wfs(__env);
return (0);
}
static __inline int
fesetenv(const fenv_t *__envp)
{
__wfs(*__envp);
return (0);
}
static __inline int
feupdateenv(const fenv_t *__envp)
{
fexcept_t __fpsr;
__rfs(&__fpsr);
__wfs(*__envp);
feraiseexcept(__fpsr & FE_ALL_EXCEPT);
return (0);
}
#if __BSD_VISIBLE
static __inline int
feenableexcept(int __mask)
{
fenv_t __old_fpsr, __new_fpsr;
__rfs(&__old_fpsr);
__new_fpsr = __old_fpsr | (__mask & FE_ALL_EXCEPT) << _FPUSW_SHIFT;
__wfs(__new_fpsr);
return ((__old_fpsr >> _FPUSW_SHIFT) & FE_ALL_EXCEPT);
}
static __inline int
fedisableexcept(int __mask)
{
fenv_t __old_fpsr, __new_fpsr;
__rfs(&__old_fpsr);
__new_fpsr = __old_fpsr & ~((__mask & FE_ALL_EXCEPT) << _FPUSW_SHIFT);
__wfs(__new_fpsr);
return ((__old_fpsr >> _FPUSW_SHIFT) & FE_ALL_EXCEPT);
}
static __inline int
fegetexcept(void)
{
fenv_t __fpsr;
__rfs(&__fpsr);
return ((__fpsr & _ENABLE_MASK) >> _FPUSW_SHIFT);
}
#endif /* __BSD_VISIBLE */
/* __END_DECLS */
#endif /* !_FENV_H_ */

11
libthread_db/libthread_db.c
View File

@ -99,7 +99,7 @@ _event_getmsg_helper(td_thrhandle_t const * handle, void * bkpt_addr)
gEventMsgHandle.tid = gEventMsgHandle.pid;
return 0x42;
}
#else
#elif defined(__arm__)
pc = (void *)ptrace(PTRACE_PEEKUSR, handle->tid, (void *)60 /* r15/pc */, NULL);
if (pc == bkpt_addr) {
@ -109,6 +109,15 @@ _event_getmsg_helper(td_thrhandle_t const * handle, void * bkpt_addr)
gEventMsgHandle.tid = gEventMsgHandle.pid;
return 0x42;
}
#elif defined(__mips__)
pc = (void *)ptrace(PTRACE_PEEKUSR, handle->tid, (void *)(64*4) /* pc */, NULL);
if (pc == bkpt_addr) {
// The hook function takes the id of the new thread as it's first param,
// so grab it from a0
gEventMsgHandle.pid = ptrace(PTRACE_PEEKUSR, handle->tid, (void *)(4*4) /* a0 */, NULL);
gEventMsgHandle.tid = gEventMsgHandle.pid;
return 0x42;
}
#endif
return 0;
}