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/* i386-specific implementation of profiling support.
Copyright (C) 1997-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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
<https://www.gnu.org/licenses/>. */
#include <sysdep.h>
/* We need a special version of the `mcount' function since for ix86 it
must not clobber any register. This has several reasons:
- there is a bug in gcc as of version 2.7.2.2 which prohibits the
use of profiling together with nested functions
- the ELF `fixup' function uses GCC's regparm feature
- some (future) systems might want to pass parameters in registers. */
/* We must not pollute the global namespace. */
#define mcount_internal __mcount_internal
extern void mcount_internal (u_long frompc, u_long selfpc)
__attribute__ ((regparm (2))) attribute_hidden;
#define _MCOUNT_DECL(frompc, selfpc) \
__attribute__ ((regparm (2))) \
void mcount_internal (u_long frompc, u_long selfpc)
/* Define MCOUNT as empty since we have the implementation in another
file. */
#define MCOUNT
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