diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelmutex.S')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelmutex.S | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelmutex.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelmutex.S deleted file mode 100644 index a54e48c9e6..0000000000 --- a/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelmutex.S +++ /dev/null @@ -1,180 +0,0 @@ -/* Copyright (C) 2002, 2003 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 <sysdep.h> -#include <pthread-errnos.h> - - .text - -#ifndef LOCK -# ifdef UP -# define LOCK -# else -# define LOCK lock -# endif -#endif - -#define SYS_gettimeofday __NR_gettimeofday -#define SYS_futex 240 -#define FUTEX_WAIT 0 -#define FUTEX_WAKE 1 - - - .globl __lll_mutex_lock_wait - .type __lll_mutex_lock_wait,@function - .hidden __lll_mutex_lock_wait - .align 16 -__lll_mutex_lock_wait: - pushl %esi - pushl %ebx - pushl %edx - - /* In the loop we are going to add 2 instead of 1 which is what - the caller did. Account for that. */ - subl $1, %eax - - movl %ecx, %ebx - xorl %esi, %esi /* No timeout. */ - xorl %ecx, %ecx /* movl $FUTEX_WAIT, %ecx */ -1: - leal 2(%eax), %edx /* account for the preceeded xadd. */ - movl $SYS_futex, %eax - ENTER_KERNEL - - movl $2, %eax - LOCK - xaddl %eax, (%ebx) - testl %eax, %eax - jne,pn 1b - - popl %edx - popl %ebx - popl %esi - ret - .size __lll_mutex_lock_wait,.-__lll_mutex_lock_wait - - -#ifdef NOT_IN_libc - .globl __lll_mutex_timedlock_wait - .type __lll_mutex_timedlock_wait,@function - .hidden __lll_mutex_timedlock_wait - .align 16 -__lll_mutex_timedlock_wait: - /* Check for a valid timeout value. */ - cmpl $1000000000, 4(%edx) - jae 3f - - pushl %edi - pushl %esi - pushl %ebx - pushl %ebp - - /* In the loop we are going to add 2 instead of 1 which is what - the caller did. Account for that. */ - subl $1, %eax - - /* Stack frame for the timespec and timeval structs. */ - subl $8, %esp - - movl %ecx, %ebp - movl %edx, %edi - -1: leal 2(%eax), %esi - - /* Get current time. */ - movl %esp, %ebx - xorl %ecx, %ecx - movl $SYS_gettimeofday, %eax - ENTER_KERNEL - - /* Compute relative timeout. */ - movl 4(%esp), %eax - movl $1000, %edx - mul %edx /* Milli seconds to nano seconds. */ - movl (%edi), %ecx - movl 4(%edi), %edx - subl (%esp), %ecx - subl %eax, %edx - jns 4f - addl $1000000000, %edx - subl $1, %ecx -4: testl %ecx, %ecx - js 5f /* Time is already up. */ - - /* Futex call. */ - movl %ecx, (%esp) /* Store relative timeout. */ - movl %edx, 4(%esp) - movl %esi, %edx - movl %esp, %esi - xorl %ecx, %ecx /* movl $FUTEX_WAIT, %ecx */ - movl %ebp, %ebx - movl $SYS_futex, %eax - ENTER_KERNEL - movl %eax, %ecx - - movl $2, %eax - LOCK - xaddl %eax, (%ebx) - testl %eax, %eax - jne 7f - - xorl %eax, %eax - -6: addl $8, %esp - popl %ebp - popl %ebx - popl %esi - popl %edi - ret - - /* Check whether the time expired. */ -7: cmpl $-ETIMEDOUT, %ecx - je 5f - jmp 1b - -3: movl $EINVAL, %eax - ret - -5: movl $ETIMEDOUT, %eax - jmp 6b - .size __lll_mutex_timedlock_wait,.-__lll_mutex_timedlock_wait -#endif - - - .globl __lll_mutex_unlock_wake - .type __lll_mutex_unlock_wake,@function - .hidden __lll_mutex_unlock_wake - .align 16 -__lll_mutex_unlock_wake: - pushl %ebx - pushl %ecx - pushl %edx - - movl %eax, %ebx - movl $0, (%eax) - movl $FUTEX_WAKE, %ecx - movl $1, %edx /* Wake one thread. */ - movl $SYS_futex, %eax - ENTER_KERNEL - - popl %edx - popl %ecx - popl %ebx - ret - .size __lll_mutex_unlock_wake,.-__lll_mutex_unlock_wake |