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2005-10-09 Phil Blundell <pb@reciva.com>

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* sysdeps/arm/Makefile [subdir=gmon] (sysdep_routines): Add
	_mcount.
	* sysdeps/arm/machine-gmon.h (MCOUNT): Replace with empty
	definition.
	(_MCOUNT_DECL): Make linkage global.
	* sysdeps/arm/_mcount.S: New file.
This commit is contained in:
Phil Blundell 2005-10-09 18:29:25 +00:00
parent 609908d770
commit 5f7c48c17f
4 changed files with 42 additions and 43 deletions
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9
ChangeLog.arm
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@ -1,3 +1,12 @@
2005-10-09 Phil Blundell <pb@reciva.com>
* sysdeps/arm/Makefile [subdir=gmon] (sysdep_routines): Add
_mcount.
* sysdeps/arm/machine-gmon.h (MCOUNT): Replace with empty
definition.
(_MCOUNT_DECL): Make linkage global.
* sysdeps/arm/_mcount.S: New file.
2005-10-09 Phil Blundell <pb@reciva.com>
* sysdeps/arm/dl-trampoline.S: [PROF] (_dl_runtime_profile):

3
sysdeps/arm/Makefile Normal file
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@ -0,0 +1,3 @@
ifeq ($(subdir),gmon)
sysdep_routines += _mcount
endif

28
sysdeps/arm/_mcount.S Normal file
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@ -0,0 +1,28 @@
/* Profiling entry point. ARM version.
Copyright (C) 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <sysdep.h>
ENTRY(_mcount)
stmfd sp!, {r0-r3, lr}
mov r0, lr
mov r1, ip
bl mcount_internal
ldmfd sp!, {r0-r3, pc}
END(_mcount)

45
sysdeps/arm/machine-gmon.h
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@ -20,48 +20,7 @@
/* GCC for the ARM cannot compile __builtin_return_address(N) for N != 0,
so we must use an assembly stub. */
#include <sysdep.h>
#ifndef NO_UNDERSCORES
/* The asm symbols for C functions are `_function'.
The canonical name for the counter function is `mcount', no _. */
void _mcount (void) asm ("mcount");
#else
/* The canonical name for the function is `_mcount' in both C and asm,
but some old asm code might assume it's `mcount'. */
void _mcount (void);
weak_alias (_mcount, mcount)
#endif
static void mcount_internal (u_long frompc, u_long selfpc) __attribute_used__;
#define _MCOUNT_DECL(frompc, selfpc) \
static void mcount_internal (u_long frompc, u_long selfpc)
/* This macro/func MUST save r0, r1 because the compiler inserts
blind calls to _mount(), ignoring the fact that _mcount may
clobber registers; therefore, _mcount may NOT clobber registers */
/* if (this_fp!=0) {
r0 = this_fp
r1 = this_lr
r1 = [r1-4] which is caller's lr
if (r1!=0)
r1 = caller's lr
call mcount_internal(this_lr, caller's_lr)
}
*/
#define MCOUNT \
void _mcount (void) \
{ \
__asm__("stmdb sp!, {r0, r1, r2, r3};" \
"movs fp, fp;" \
"moveq r1, #0;" \
"ldrne r1, [fp, $-4];" \
"ldrne r0, [fp, $-12];" \
"movnes r0, r0;" \
"ldrne r0, [r0, $-4];" \
"movs r0, r0;" \
"blne mcount_internal;" \
"ldmia sp!, {r0, r1, r2, r3}"); \
}
void mcount_internal (u_long frompc, u_long selfpc)
#define MCOUNT /* Nothing herel code in _mcount.S is used. */