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Define HAVE_CMOV and include i486 version.

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This commit is contained in:
Ulrich Drepper 2002-12-03 20:21:08 +00:00
parent e4044c0178
commit 20b839bf12
3 changed files with 70 additions and 23 deletions
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48
nptl/sysdeps/i386/i486/pthread_spin_trylock.S Normal file
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@ -0,0 +1,48 @@
/* Copyright (C) 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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. */
#define EBUSY 16
#ifdef UP
# define LOCK
#else
# define LOCK lock
#endif
.globl pthread_spin_trylock
.type pthread_spin_trylock,@function
.align 16
pthread_spin_trylock:
movl 4(%esp), %edx
movl $1, %eax
xorl %ecx, %ecx
LOCK
cmpxchgl %ecx, (%edx)
movl $EBUSY, %edx
movl %ecx, %eax
#ifdef HAVE_CMOV
cmovnel %edx, %eax
#else
je 0f
movl %edx, %eax
0:
#endif
ret
.size pthread_spin_trylock,.-pthread_spin_trylock

20
nptl/sysdeps/i386/i586/pthread_spin_trylock.S Normal file
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@ -0,0 +1,20 @@
/* Copyright (C) 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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. */
#include "../i486/pthread_spin_trylock.S"

25
nptl/sysdeps/i386/i686/pthread_spin_trylock.S
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@ -17,26 +17,5 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */ 02111-1307 USA. */
#define EBUSY 16 #define HAVE_CMOV 1
#include "../i486/pthread_spin_trylock.S"
#ifdef UP
# define LOCK
#else
# define LOCK lock
#endif
.globl pthread_spin_trylock
.type pthread_spin_trylock,@function
.align 16
pthread_spin_trylock:
movl 4(%esp), %edx
movl $1, %eax
xorl %ecx, %ecx
LOCK
cmpxchgl %ecx, (%edx)
movl $EBUSY, %edx
movl %ecx, %eax
cmovne %edx, %eax
ret
.size pthread_spin_trylock,.-pthread_spin_trylock