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2005-10-10 Philip Blundell <philb@gnu.org> 

* sysdeps/arm/Makefile, sysdeps/arm/machine-gmon.h,
	sysdeps/arm/_mcount.S: Revert previous bogus changes.
This commit is contained in:
Phil Blundell 2005-10-10 15:09:14 +00:00
parent a7ed1adbec
commit 4ce0c8e4c8
4 changed files with 49 additions and 36 deletions
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5
ChangeLog.arm
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@ -3,6 +3,11 @@
* sysdeps/arm/memset.S (memset): Correct handling of negative
arguments.
2005-10-10 Philip Blundell <philb@gnu.org>
* sysdeps/arm/Makefile, sysdeps/arm/machine-gmon.h,
sysdeps/arm/_mcount.S: Revert previous bogus changes.
2005-10-10 Philip Blundell <philb@gnu.org>
* sysdeps/arm/_mcount.S: Suppress profiling when building this

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

30
sysdeps/arm/_mcount.S
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@ -1,30 +0,0 @@
/* 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. */
#undef PROF
#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)

47
sysdeps/arm/machine-gmon.h
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@ -20,7 +20,48 @@
/* GCC for the ARM cannot compile __builtin_return_address(N) for N != 0,
so we must use an assembly stub. */
#define _MCOUNT_DECL(frompc, selfpc) \
void mcount_internal (u_long frompc, u_long selfpc)
#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}"); \
}
#define MCOUNT /* Nothing herel code in _mcount.S is used. */