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/* Machine-dependent definitions for profiling support. ARM version.
Copyright (C) 1996, 1997 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. 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);
#define _MCOUNT_DECL(frompc, selfpc) \
static void mcount_internal (u_long frompc, u_long selfpc)
#define MCOUNT \
void _mcount (void) \
{ \
register unsigned long int frompc, selfpc; \
__asm__("movs fp, fp; " \
"moveq %0, $0; " \
"ldrne %0, [fp, $-4]; " \
"ldrne %1, [fp, $-12]; " \
"movnes %1, %1; " \
"ldrne %1, [%1, $-4]; " \
: "=g" (selfpc), "=g" (frompc) \
: : "cc" \
); \
if (selfpc) \
mcount_internal(frompc, selfpc); \
}
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