mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-15 01:21:06 +00:00
688903eb3e
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
48 lines
1.8 KiB
C
48 lines
1.8 KiB
C
/* Machine-dependent definitions for profiling support. Generic GCC 2 version.
|
|
Copyright (C) 1996-2018 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, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
/* GCC version 2 gives us a perfect magical function to get
|
|
just the information we need:
|
|
void *__builtin_return_address (unsigned int N)
|
|
returns the return address of the frame N frames up. */
|
|
|
|
/* Be warned that GCC cannot usefully compile __builtin_return_address(N)
|
|
for N != 0 on all machines. In this case, you may have to write
|
|
your own version of _mcount(). */
|
|
|
|
#if __GNUC__ < 2
|
|
#error "This file uses __builtin_return_address, a GCC 2 extension."
|
|
#endif
|
|
|
|
#include <sysdep.h>
|
|
/* 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)
|
|
|
|
static void mcount_internal (u_long frompc, u_long selfpc);
|
|
|
|
#define _MCOUNT_DECL(frompc, selfpc) \
|
|
static inline void mcount_internal (u_long frompc, u_long selfpc)
|
|
|
|
#define MCOUNT \
|
|
void _mcount (void) \
|
|
{ \
|
|
mcount_internal ((u_long) RETURN_ADDRESS (1), (u_long) RETURN_ADDRESS (0)); \
|
|
}
|