mirror of
https://sourceware.org/git/glibc.git
synced 2025-12-24 17:51:17 +03:00
2.5-18.1
This commit is contained in:
@@ -1,67 +0,0 @@
|
||||
/* Machine-dependent definitions for profiling support. ARM version.
|
||||
Copyright (C) 1996, 1997, 1998 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. */
|
||||
|
||||
/* 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}"); \
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user