638 lines
13 KiB
ArmAsm
638 lines
13 KiB
ArmAsm
/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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#include <shlib-compat.h>
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#include <lowlevelcond.h>
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#include <pthread-errnos.h>
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#ifdef UP
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# define LOCK
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#else
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# define LOCK lock
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#endif
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#define SYS_gettimeofday __NR_gettimeofday
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#define SYS_futex 240
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#define FUTEX_WAIT 0
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#define FUTEX_WAKE 1
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.text
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/* int pthread_cond_timedwait (pthread_cond_t *cond, pthread_mutex_t *mutex,
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const struct timespec *abstime) */
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.globl __pthread_cond_timedwait
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.type __pthread_cond_timedwait, @function
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.align 16
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__pthread_cond_timedwait:
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.LSTARTCODE:
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pushl %ebp
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.Lpush_ebp:
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pushl %edi
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.Lpush_edi:
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pushl %esi
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.Lpush_esi:
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pushl %ebx
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.Lpush_ebx:
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movl 20(%esp), %ebx
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movl 28(%esp), %ebp
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cmpl $1000000000, 4(%ebp)
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movl $EINVAL, %eax
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jae 18f
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/* Get internal lock. */
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movl $1, %edx
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xorl %eax, %eax
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LOCK
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#if cond_lock == 0
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cmpxchgl %edx, (%ebx)
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#else
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cmpxchgl %edx, cond_lock(%ebx)
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#endif
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jnz 1f
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/* Store the reference to the mutex. If there is already a
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different value in there this is a bad user bug. */
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2: cmpl $-1, dep_mutex(%ebx)
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movl 24(%esp), %eax
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je 17f
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movl %eax, dep_mutex(%ebx)
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/* Unlock the mutex. */
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17: xorl %edx, %edx
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call __pthread_mutex_unlock_usercnt
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testl %eax, %eax
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jne 16f
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addl $1, total_seq(%ebx)
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adcl $0, total_seq+4(%ebx)
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addl $1, cond_futex(%ebx)
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addl $(1 << clock_bits), cond_nwaiters(%ebx)
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#define FRAME_SIZE 24
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subl $FRAME_SIZE, %esp
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.Lsubl:
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/* Get and store current wakeup_seq value. */
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movl wakeup_seq(%ebx), %edi
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movl wakeup_seq+4(%ebx), %edx
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movl broadcast_seq(%ebx), %eax
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movl %edi, 12(%esp)
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movl %edx, 16(%esp)
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movl %eax, 20(%esp)
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/* Get the current time. */
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8: movl %ebx, %edx
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#ifdef __NR_clock_gettime
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/* Get the clock number. */
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movl cond_nwaiters(%ebx), %ebx
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andl $((1 << clock_bits) - 1), %ebx
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/* Only clocks 0 and 1 are allowed so far. Both are handled in the
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kernel. */
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leal 4(%esp), %ecx
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movl $__NR_clock_gettime, %eax
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ENTER_KERNEL
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# ifndef __ASSUME_POSIX_TIMERS
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cmpl $-ENOSYS, %eax
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je 19f
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# endif
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movl %edx, %ebx
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/* Compute relative timeout. */
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movl (%ebp), %ecx
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movl 4(%ebp), %edx
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subl 4(%esp), %ecx
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subl 8(%esp), %edx
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#else
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/* Get the current time. */
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leal 4(%esp), %ebx
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xorl %ecx, %ecx
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movl $SYS_gettimeofday, %eax
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ENTER_KERNEL
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movl %edx, %ebx
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/* Compute relative timeout. */
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movl 8(%esp), %eax
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movl $1000, %edx
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mul %edx /* Milli seconds to nano seconds. */
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movl (%ebp), %ecx
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movl 4(%ebp), %edx
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subl 4(%esp), %ecx
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subl %eax, %edx
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#endif
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jns 12f
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addl $1000000000, %edx
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subl $1, %ecx
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12: testl %ecx, %ecx
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movl $-ETIMEDOUT, %esi
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js 6f
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/* Store relative timeout. */
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21: movl %ecx, 4(%esp)
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movl %edx, 8(%esp)
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movl cond_futex(%ebx), %edi
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/* Unlock. */
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LOCK
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#if cond_lock == 0
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subl $1, (%ebx)
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#else
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subl $1, cond_lock(%ebx)
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#endif
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jne 3f
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.LcleanupSTART:
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4: call __pthread_enable_asynccancel
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movl %eax, (%esp)
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leal 4(%esp), %esi
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xorl %ecx, %ecx /* movl $FUTEX_WAIT, %ecx */
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movl %edi, %edx
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addl $cond_futex, %ebx
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.Ladd_cond_futex:
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movl $SYS_futex, %eax
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ENTER_KERNEL
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subl $cond_futex, %ebx
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.Lsub_cond_futex:
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movl %eax, %esi
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movl (%esp), %eax
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call __pthread_disable_asynccancel
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.LcleanupEND:
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/* Lock. */
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movl $1, %edx
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xorl %eax, %eax
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LOCK
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#if cond_lock == 0
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cmpxchgl %edx, (%ebx)
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#else
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cmpxchgl %edx, cond_lock(%ebx)
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#endif
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jnz 5f
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6: movl broadcast_seq(%ebx), %eax
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cmpl 20(%esp), %eax
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jne 23f
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movl woken_seq(%ebx), %eax
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movl woken_seq+4(%ebx), %ecx
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movl wakeup_seq(%ebx), %edi
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movl wakeup_seq+4(%ebx), %edx
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cmpl 16(%esp), %edx
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jne 7f
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cmpl 12(%esp), %edi
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je 15f
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7: cmpl %ecx, %edx
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jne 9f
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cmp %eax, %edi
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jne 9f
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15: cmpl $-ETIMEDOUT, %esi
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jne 8b
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addl $1, wakeup_seq(%ebx)
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adcl $0, wakeup_seq+4(%ebx)
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addl $1, cond_futex(%ebx)
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movl $ETIMEDOUT, %esi
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jmp 14f
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23: xorl %esi, %esi
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jmp 24f
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9: xorl %esi, %esi
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14: addl $1, woken_seq(%ebx)
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adcl $0, woken_seq+4(%ebx)
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24: subl $(1 << clock_bits), cond_nwaiters(%ebx)
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/* Wake up a thread which wants to destroy the condvar object. */
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movl total_seq(%ebx), %eax
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andl total_seq+4(%ebx), %eax
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cmpl $0xffffffff, %eax
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jne 25f
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movl cond_nwaiters(%ebx), %eax
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andl $~((1 << clock_bits) - 1), %eax
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jne 25f
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addl $cond_nwaiters, %ebx
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movl $SYS_futex, %eax
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movl $FUTEX_WAKE, %ecx
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movl $1, %edx
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ENTER_KERNEL
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subl $cond_nwaiters, %ebx
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25: LOCK
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#if cond_lock == 0
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subl $1, (%ebx)
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#else
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subl $1, cond_lock(%ebx)
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#endif
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jne 10f
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/* Remove cancellation handler. */
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11: movl 24+FRAME_SIZE(%esp), %eax
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call __pthread_mutex_cond_lock
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addl $FRAME_SIZE, %esp
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.Laddl:
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/* We return the result of the mutex_lock operation if it failed. */
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testl %eax, %eax
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#ifdef HAVE_CMOV
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cmovel %esi, %eax
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#else
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jne 22f
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movl %esi, %eax
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22:
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#endif
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18: popl %ebx
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.Lpop_ebx:
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popl %esi
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.Lpop_esi:
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popl %edi
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.Lpop_edi:
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popl %ebp
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.Lpop_ebp:
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ret
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/* Initial locking failed. */
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1:
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.LSbl1:
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#if cond_lock == 0
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movl %ebx, %ecx
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#else
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leal cond_lock(%ebx), %ecx
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#endif
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call __lll_mutex_lock_wait
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jmp 2b
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/* Unlock in loop requires wakeup. */
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3:
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.LSbl2:
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#if cond_lock == 0
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movl %ebx, %eax
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#else
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leal cond_lock(%ebx), %eax
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#endif
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call __lll_mutex_unlock_wake
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jmp 4b
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/* Locking in loop failed. */
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5:
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#if cond_lock == 0
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movl %ebx, %ecx
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#else
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leal cond_lock(%ebx), %ecx
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#endif
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call __lll_mutex_lock_wait
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jmp 6b
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/* Unlock after loop requires wakeup. */
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10:
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#if cond_lock == 0
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movl %ebx, %eax
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#else
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leal cond_lock(%ebx), %eax
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#endif
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call __lll_mutex_unlock_wake
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jmp 11b
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/* The initial unlocking of the mutex failed. */
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16:
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.LSbl3:
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LOCK
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#if cond_lock == 0
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subl $1, (%ebx)
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#else
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subl $1, cond_lock(%ebx)
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#endif
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jne 18b
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movl %eax, %esi
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#if cond_lock == 0
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movl %ebx, %eax
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#else
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leal cond_lock(%ebx), %eax
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#endif
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call __lll_mutex_unlock_wake
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movl %esi, %eax
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jmp 18b
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#if defined __NR_clock_gettime && !defined __ASSUME_POSIX_TIMERS
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/* clock_gettime not available. */
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.LSbl4:
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19: leal 4(%esp), %ebx
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xorl %ecx, %ecx
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movl $SYS_gettimeofday, %eax
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ENTER_KERNEL
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movl %edx, %ebx
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/* Compute relative timeout. */
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movl 8(%esp), %eax
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movl $1000, %edx
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mul %edx /* Milli seconds to nano seconds. */
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movl (%ebp), %ecx
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movl 4(%ebp), %edx
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subl 4(%esp), %ecx
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subl %eax, %edx
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jns 20f
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addl $1000000000, %edx
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subl $1, %ecx
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20: testl %ecx, %ecx
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movl $-ETIMEDOUT, %esi
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js 6b
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jmp 21b
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#endif
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.size __pthread_cond_timedwait, .-__pthread_cond_timedwait
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versioned_symbol (libpthread, __pthread_cond_timedwait, pthread_cond_timedwait,
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GLIBC_2_3_2)
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.type __condvar_tw_cleanup2, @function
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__condvar_tw_cleanup2:
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subl $cond_futex, %ebx
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.LSbl5:
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.size __condvar_tw_cleanup2, .-__condvar_tw_cleanup2
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.type __condvar_tw_cleanup, @function
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__condvar_tw_cleanup:
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movl %eax, %esi
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/* Get internal lock. */
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movl $1, %edx
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xorl %eax, %eax
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LOCK
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#if cond_lock == 0
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cmpxchgl %edx, (%ebx)
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#else
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cmpxchgl %edx, cond_lock(%ebx)
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#endif
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jz 1f
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#if cond_lock == 0
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movl %ebx, %ecx
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#else
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leal cond_lock(%ebx), %ecx
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#endif
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call __lll_mutex_lock_wait
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1: movl broadcast_seq(%ebx), %eax
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cmpl 20(%esp), %eax
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jne 3f
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addl $1, wakeup_seq(%ebx)
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adcl $0, wakeup_seq+4(%ebx)
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addl $1, cond_futex(%ebx)
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addl $1, woken_seq(%ebx)
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adcl $0, woken_seq+4(%ebx)
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3: subl $(1 << clock_bits), cond_nwaiters(%ebx)
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/* Wake up a thread which wants to destroy the condvar object. */
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xorl %edi, %edi
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movl total_seq(%ebx), %eax
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andl total_seq+4(%ebx), %eax
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cmpl $0xffffffff, %eax
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jne 4f
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movl cond_nwaiters(%ebx), %eax
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andl $~((1 << clock_bits) - 1), %eax
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jne 4f
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addl $cond_nwaiters, %ebx
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movl $SYS_futex, %eax
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movl $FUTEX_WAKE, %ecx
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movl $1, %edx
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ENTER_KERNEL
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subl $cond_nwaiters, %ebx
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movl $1, %edi
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4: LOCK
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#if cond_lock == 0
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subl $1, (%ebx)
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#else
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subl $1, cond_lock(%ebx)
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#endif
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je 2f
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#if cond_lock == 0
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movl %ebx, %eax
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#else
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leal cond_lock(%ebx), %eax
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#endif
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call __lll_mutex_unlock_wake
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/* Wake up all waiters to make sure no signal gets lost. */
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2: testl %edi, %edi
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jnz 5f
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addl $cond_futex, %ebx
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movl $FUTEX_WAKE, %ecx
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movl $SYS_futex, %eax
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movl $0x7fffffff, %edx
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ENTER_KERNEL
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5: movl 24+FRAME_SIZE(%esp), %eax
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call __pthread_mutex_cond_lock
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movl %esi, (%esp)
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.LcallUR:
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call _Unwind_Resume
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hlt
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.LENDCODE:
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.size __condvar_tw_cleanup, .-__condvar_tw_cleanup
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.section .gcc_except_table,"a",@progbits
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.LexceptSTART:
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.byte 0xff # @LPStart format (omit)
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.byte 0xff # @TType format (omit)
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.byte 0x0b # call-site format
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# DW_EH_PE_sdata4
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.uleb128 .Lcstend-.Lcstbegin
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.Lcstbegin:
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.long .LcleanupSTART-.LSTARTCODE
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.long .Ladd_cond_futex-.LcleanupSTART
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.long __condvar_tw_cleanup-.LSTARTCODE
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.uleb128 0
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.long .Ladd_cond_futex-.LSTARTCODE
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.long .Lsub_cond_futex-.Ladd_cond_futex
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.long __condvar_tw_cleanup2-.LSTARTCODE
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.uleb128 0
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.long .Lsub_cond_futex-.LSTARTCODE
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.long .LcleanupEND-.Lsub_cond_futex
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.long __condvar_tw_cleanup-.LSTARTCODE
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.uleb128 0
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.long .LcallUR-.LSTARTCODE
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.long .LENDCODE-.LcallUR
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.long 0
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.uleb128 0
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.Lcstend:
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.section .eh_frame,"a",@progbits
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.LSTARTFRAME:
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.long L(ENDCIE)-L(STARTCIE) # Length of the CIE.
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.LSTARTCIE:
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.long 0 # CIE ID.
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.byte 1 # Version number.
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#ifdef SHARED
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.string "zPLR" # NUL-terminated augmentation
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# string.
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#else
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.string "zPL" # NUL-terminated augmentation
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# string.
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#endif
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.uleb128 1 # Code alignment factor.
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.sleb128 -4 # Data alignment factor.
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.byte 8 # Return address register
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# column.
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#ifdef SHARED
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.uleb128 7 # Augmentation value length.
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.byte 0x9b # Personality: DW_EH_PE_pcrel
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# + DW_EH_PE_sdata4
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# + DW_EH_PE_indirect
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.long DW.ref.__gcc_personality_v0-.
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.byte 0x1b # LSDA Encoding: DW_EH_PE_pcrel
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# + DW_EH_PE_sdata4.
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.byte 0x1b # FDE Encoding: DW_EH_PE_pcrel
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# + DW_EH_PE_sdata4.
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#else
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.uleb128 6 # Augmentation value length.
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.byte 0x0 # Personality: absolute
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.long __gcc_personality_v0
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.byte 0x0 # LSDA Encoding: absolute
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#endif
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.byte 0x0c # DW_CFA_def_cfa
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.uleb128 4
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.uleb128 4
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.byte 0x88 # DW_CFA_offset, column 0x8
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.uleb128 1
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.align 4
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.LENDCIE:
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.long .LENDFDE-.LSTARTFDE # Length of the FDE.
|
|
.LSTARTFDE:
|
|
.long .LSTARTFDE-.LSTARTFRAME # CIE pointer.
|
|
#ifdef SHARED
|
|
.long .LSTARTCODE-. # PC-relative start address
|
|
# of the code
|
|
#else
|
|
.long .LSTARTCODE # Start address of the code.
|
|
#endif
|
|
.long .LENDCODE-.LSTARTCODE # Length of the code.
|
|
.uleb128 4 # Augmentation size
|
|
#ifdef SHARED
|
|
.long .LexceptSTART-.
|
|
#else
|
|
.long .LexceptSTART
|
|
#endif
|
|
.byte 0x40+.Lpush_ebp-.LSTARTCODE # DW_CFA_advance_loc+N
|
|
.byte 14 # DW_CFA_def_cfa_offset
|
|
.uleb128 8
|
|
.byte 0x85 # DW_CFA_offset %ebp
|
|
.uleb128 2
|
|
.byte 0x40+ .Lpush_edi-.Lpush_ebp # DW_CFA_advance_loc+N
|
|
.byte 14 # DW_CFA_def_cfa_offset
|
|
.uleb128 12
|
|
.byte 0x87 # DW_CFA_offset %edi
|
|
.uleb128 3
|
|
.byte 0x40+.Lpush_esi-.Lpush_edi # DW_CFA_advance_loc+N
|
|
.byte 14 # DW_CFA_def_cfa_offset
|
|
.uleb128 16
|
|
.byte 0x86 # DW_CFA_offset %esi
|
|
.uleb128 4
|
|
.byte 0x40+.Lpush_ebx-.Lpush_esi # DW_CFA_advance_loc+N
|
|
.byte 14 # DW_CFA_def_cfa_offset
|
|
.uleb128 20
|
|
.byte 0x83 # DW_CFA_offset %ebx
|
|
.uleb128 5
|
|
.byte 2 # DW_CFA_advance_loc1
|
|
.byte .Lsubl-.Lpush_ebx
|
|
.byte 14 # DW_CFA_def_cfa_offset
|
|
.uleb128 20+FRAME_SIZE
|
|
.byte 3 # DW_CFA_advance_loc2
|
|
.2byte .Laddl-.Lsubl
|
|
.byte 14 # DW_CFA_def_cfa_offset
|
|
.uleb128 20
|
|
.byte 0x40+.Lpop_ebx-.Laddl # DW_CFA_advance_loc+N
|
|
.byte 14 # DW_CFA_def_cfa_offset
|
|
.uleb128 16
|
|
.byte 0xc3 # DW_CFA_restore %ebx
|
|
.byte 0x40+.Lpop_esi-.Lpop_ebx # DW_CFA_advance_loc+N
|
|
.byte 14 # DW_CFA_def_cfa_offset
|
|
.uleb128 12
|
|
.byte 0xc6 # DW_CFA_restore %esi
|
|
.byte 0x40+.Lpop_edi-.Lpop_esi # DW_CFA_advance_loc+N
|
|
.byte 14 # DW_CFA_def_cfa_offset
|
|
.uleb128 8
|
|
.byte 0xc7 # DW_CFA_restore %edi
|
|
.byte 0x40+.Lpop_ebp-.Lpop_edi # DW_CFA_advance_loc+N
|
|
.byte 14 # DW_CFA_def_cfa_offset
|
|
.uleb128 4
|
|
.byte 0xc5 # DW_CFA_restore %ebp
|
|
.byte 0x40+.LSbl1-.Lpop_edi # DW_CFA_advance_loc+N
|
|
.byte 14 # DW_CFA_def_cfa_offset
|
|
.uleb128 20
|
|
.byte 0x40+.LSbl2-.LSbl1 # DW_CFA_advance_loc+N
|
|
.byte 14 # DW_CFA_def_cfa_offset
|
|
.uleb128 20+FRAME_SIZE
|
|
.byte 0x85 # DW_CFA_offset %ebp
|
|
.uleb128 2
|
|
.byte 0x87 # DW_CFA_offset %edi
|
|
.uleb128 3
|
|
.byte 0x86 # DW_CFA_offset %esi
|
|
.uleb128 4
|
|
.byte 0x83 # DW_CFA_offset %ebx
|
|
.uleb128 5
|
|
.byte 0x40+.LSbl3-.LSbl2 # DW_CFA_advance_loc+N
|
|
.byte 14 # DW_CFA_def_cfa_offset
|
|
.uleb128 20
|
|
#if defined __NR_clock_gettime && !defined __ASSUME_POSIX_TIMERS
|
|
.byte 0x40+.LSbl4-.LSbl3 # DW_CFA_advance_loc+N
|
|
#else
|
|
.byte 4 # DW_CFA_advance_loc4
|
|
.long .LSbl5-.LSbl3
|
|
#endif
|
|
.byte 14 # DW_CFA_def_cfa_offset
|
|
.uleb128 20+FRAME_SIZE
|
|
.align 4
|
|
.LENDFDE:
|
|
|
|
#ifdef SHARED
|
|
.hidden DW.ref.__gcc_personality_v0
|
|
.weak DW.ref.__gcc_personality_v0
|
|
.section .gnu.linkonce.d.DW.ref.__gcc_personality_v0,"aw",@progbits
|
|
.align 4
|
|
.type DW.ref.__gcc_personality_v0, @object
|
|
.size DW.ref.__gcc_personality_v0, 4
|
|
DW.ref.__gcc_personality_v0:
|
|
.long __gcc_personality_v0
|
|
#endif
|