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/* i386-specific implemetation of profiling support.
   Copyright (C) 1997, 2002 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, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */


/* 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.  */

        .globl _mcount
        .type _mcount,@function;
        .align 1<<4
_mcount:
        /* Save the caller-clobbered registers.  */
        pushl %eax
        pushl %ecx
        pushl %edx

        movl 12(%esp), %edx
        movl 4(%ebp), %eax

        /* No need to access the PLT or GOT, __mcount_internal is an
           internal function and we can make a relative call.  */
        call __mcount_internal

        /* Pop the saved registers.  Please note that `mcount' has no
           return value.  */
        popl %edx
        popl %ecx
        popl %eax
        ret
        .size _mcount,.-_mcount;

#undef mcount
.weak mcount ; mcount = _mcount