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https://sourceware.org/git/glibc.git
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f6d1d86d0c
Since glibc doesn't support i386 any more, we can move sysdeps/unix/sysv/linux/i386/i486/*.? to i386. [BZ #19006] * sysdeps/unix/sysv/linux/i386/i486/libc-lowlevellock.S: Moved to ... * sysdeps/unix/sysv/linux/i386/libc-lowlevellock.S: Here. * sysdeps/unix/sysv/linux/i386/i486/lll_timedlock_wait.c: Moved to ... * sysdeps/unix/sysv/linux/i386/lll_timedlock_wait.c: Here. * sysdeps/unix/sysv/linux/i386/i486/lll_timedwait_tid.c: Moved to ... * sysdeps/unix/sysv/linux/i386/lll_timedwait_tid.c: Here. * sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S: Moved to ... * sysdeps/unix/sysv/linux/i386/lowlevellock.S: Here. * sysdeps/unix/sysv/linux/i386/i486/lowlevelrobustlock.S: Moved to ... * sysdeps/unix/sysv/linux/i386/lowlevelrobustlock.S: Here. * sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S: Moved to ... * sysdeps/unix/sysv/linux/i386/pthread_barrier_wait.S: Here. * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S: Moved to ... * sysdeps/unix/sysv/linux/i386/pthread_cond_broadcast.S: Here. * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S: Moved to ... * sysdeps/unix/sysv/linux/i386/pthread_cond_signal.S: Here. * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S: Moved to ... * sysdeps/unix/sysv/linux/i386/pthread_cond_timedwait.S: Here. * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S: Moved to ... * sysdeps/unix/sysv/linux/i386/pthread_cond_wait.S: Here. * sysdeps/unix/sysv/linux/i386/i586/libc-lowlevellock.S: Removed. * sysdeps/unix/sysv/linux/i386/i586/lll_timedlock_wait.c: Likewise. * sysdeps/unix/sysv/linux/i386/i586/lll_timedwait_tid.c: Likewise. * sysdeps/unix/sysv/linux/i386/i586/lowlevellock.S: Likewise. * sysdeps/unix/sysv/linux/i386/i586/lowlevelrobustlock.S: Likewise. * sysdeps/unix/sysv/linux/i386/i586/pthread_barrier_wait.S: Likewise. * sysdeps/unix/sysv/linux/i386/i586/pthread_cond_broadcast.S: Likewise. * sysdeps/unix/sysv/linux/i386/i586/pthread_cond_signal.S: Likewise. * sysdeps/unix/sysv/linux/i386/i586/pthread_cond_timedwait.S: Likewise. * sysdeps/unix/sysv/linux/i386/i586/pthread_cond_wait.S: Likewise. * sysdeps/unix/sysv/linux/i386/i686/libc-lowlevellock.S: Likewise. * sysdeps/unix/sysv/linux/i386/i686/lll_timedlock_wait.c: Likewise. * sysdeps/unix/sysv/linux/i386/i686/lll_timedwait_tid.c: Likewise. * sysdeps/unix/sysv/linux/i386/i686/lowlevellock.S: Likewise. * sysdeps/unix/sysv/linux/i386/i686/lowlevelrobustlock.S: Likewise. * sysdeps/unix/sysv/linux/i386/i686/pthread_barrier_wait.S: Likewise. * sysdeps/unix/sysv/linux/i386/i686/pthread_cond_broadcast.S: Likewise. * sysdeps/unix/sysv/linux/i386/i686/pthread_cond_signal.S: Likewise. * sysdeps/unix/sysv/linux/i386/i686/pthread_cond_wait.S: Likewise. * sysdeps/unix/sysv/linux/i386/i686/pthread_cond_timedwait.S: Replace ../i486/pthread_cond_timedwait.S with ../pthread_cond_timedwait.S.
467 lines
9.2 KiB
ArmAsm
467 lines
9.2 KiB
ArmAsm
/* Copyright (C) 2002-2015 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, see
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<http://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#include <pthread-errnos.h>
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#include <kernel-features.h>
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#include <lowlevellock.h>
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#include <stap-probe.h>
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.text
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#ifdef __ASSUME_PRIVATE_FUTEX
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# define LOAD_PRIVATE_FUTEX_WAIT(reg) \
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movl $(FUTEX_WAIT | FUTEX_PRIVATE_FLAG), reg
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# define LOAD_PRIVATE_FUTEX_WAKE(reg) \
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movl $(FUTEX_WAKE | FUTEX_PRIVATE_FLAG), reg
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# define LOAD_FUTEX_WAIT(reg) \
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xorl $(FUTEX_WAIT | FUTEX_PRIVATE_FLAG), reg
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# define LOAD_FUTEX_WAIT_ABS(reg) \
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xorl $(FUTEX_WAIT_BITSET | FUTEX_PRIVATE_FLAG | FUTEX_CLOCK_REALTIME), reg
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# define LOAD_FUTEX_WAKE(reg) \
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xorl $(FUTEX_WAKE | FUTEX_PRIVATE_FLAG), reg
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#else
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# if FUTEX_WAIT == 0
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# define LOAD_PRIVATE_FUTEX_WAIT(reg) \
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movl %gs:PRIVATE_FUTEX, reg
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# else
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# define LOAD_PRIVATE_FUTEX_WAIT(reg) \
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movl %gs:PRIVATE_FUTEX, reg ; \
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orl $FUTEX_WAIT, reg
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# endif
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# define LOAD_PRIVATE_FUTEX_WAKE(reg) \
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movl %gs:PRIVATE_FUTEX, reg ; \
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orl $FUTEX_WAKE, reg
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# if FUTEX_WAIT == 0
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# define LOAD_FUTEX_WAIT(reg) \
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xorl $FUTEX_PRIVATE_FLAG, reg ; \
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andl %gs:PRIVATE_FUTEX, reg
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# else
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# define LOAD_FUTEX_WAIT(reg) \
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xorl $FUTEX_PRIVATE_FLAG, reg ; \
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andl %gs:PRIVATE_FUTEX, reg ; \
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orl $FUTEX_WAIT, reg
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# endif
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# define LOAD_FUTEX_WAIT_ABS(reg) \
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xorl $FUTEX_PRIVATE_FLAG, reg ; \
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andl %gs:PRIVATE_FUTEX, reg ; \
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orl $FUTEX_WAIT_BITSET | FUTEX_CLOCK_REALTIME, reg
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# define LOAD_FUTEX_WAKE(reg) \
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xorl $FUTEX_PRIVATE_FLAG, reg ; \
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andl %gs:PRIVATE_FUTEX, reg ; \
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orl $FUTEX_WAKE, reg
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#endif
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.globl __lll_lock_wait_private
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.type __lll_lock_wait_private,@function
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.hidden __lll_lock_wait_private
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.align 16
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__lll_lock_wait_private:
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cfi_startproc
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pushl %edx
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cfi_adjust_cfa_offset(4)
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pushl %ebx
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cfi_adjust_cfa_offset(4)
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pushl %esi
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cfi_adjust_cfa_offset(4)
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cfi_offset(%edx, -8)
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cfi_offset(%ebx, -12)
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cfi_offset(%esi, -16)
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movl $2, %edx
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movl %ecx, %ebx
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xorl %esi, %esi /* No timeout. */
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LOAD_PRIVATE_FUTEX_WAIT (%ecx)
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cmpl %edx, %eax /* NB: %edx == 2 */
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jne 2f
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1: LIBC_PROBE (lll_lock_wait_private, 1, %ebx)
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movl $SYS_futex, %eax
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ENTER_KERNEL
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2: movl %edx, %eax
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xchgl %eax, (%ebx) /* NB: lock is implied */
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testl %eax, %eax
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jnz 1b
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popl %esi
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cfi_adjust_cfa_offset(-4)
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cfi_restore(%esi)
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popl %ebx
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cfi_adjust_cfa_offset(-4)
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cfi_restore(%ebx)
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popl %edx
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cfi_adjust_cfa_offset(-4)
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cfi_restore(%edx)
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ret
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cfi_endproc
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.size __lll_lock_wait_private,.-__lll_lock_wait_private
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#if !IS_IN (libc)
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.globl __lll_lock_wait
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.type __lll_lock_wait,@function
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.hidden __lll_lock_wait
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.align 16
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__lll_lock_wait:
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cfi_startproc
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pushl %edx
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cfi_adjust_cfa_offset(4)
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pushl %ebx
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cfi_adjust_cfa_offset(4)
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pushl %esi
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cfi_adjust_cfa_offset(4)
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cfi_offset(%edx, -8)
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cfi_offset(%ebx, -12)
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cfi_offset(%esi, -16)
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movl %edx, %ebx
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movl $2, %edx
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xorl %esi, %esi /* No timeout. */
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LOAD_FUTEX_WAIT (%ecx)
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cmpl %edx, %eax /* NB: %edx == 2 */
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jne 2f
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1: movl $SYS_futex, %eax
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ENTER_KERNEL
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2: movl %edx, %eax
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xchgl %eax, (%ebx) /* NB: lock is implied */
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testl %eax, %eax
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jnz 1b
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popl %esi
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cfi_adjust_cfa_offset(-4)
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cfi_restore(%esi)
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popl %ebx
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cfi_adjust_cfa_offset(-4)
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cfi_restore(%ebx)
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popl %edx
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cfi_adjust_cfa_offset(-4)
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cfi_restore(%edx)
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ret
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cfi_endproc
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.size __lll_lock_wait,.-__lll_lock_wait
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/* %ecx: futex
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%esi: flags
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%edx: timeout
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%eax: futex value
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*/
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.globl __lll_timedlock_wait
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.type __lll_timedlock_wait,@function
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.hidden __lll_timedlock_wait
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.align 16
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__lll_timedlock_wait:
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cfi_startproc
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pushl %ebp
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cfi_adjust_cfa_offset(4)
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cfi_rel_offset(%ebp, 0)
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pushl %ebx
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cfi_adjust_cfa_offset(4)
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cfi_rel_offset(%ebx, 0)
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# ifndef __ASSUME_FUTEX_CLOCK_REALTIME
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# ifdef PIC
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LOAD_PIC_REG (bx)
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cmpl $0, __have_futex_clock_realtime@GOTOFF(%ebx)
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# else
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cmpl $0, __have_futex_clock_realtime
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# endif
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je .Lreltmo
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# endif
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cmpl $0, (%edx)
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js 8f
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movl %ecx, %ebx
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movl %esi, %ecx
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movl %edx, %esi
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movl $0xffffffff, %ebp
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LOAD_FUTEX_WAIT_ABS (%ecx)
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movl $2, %edx
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cmpl %edx, %eax
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jne 2f
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1: movl $SYS_futex, %eax
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movl $2, %edx
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ENTER_KERNEL
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2: xchgl %edx, (%ebx) /* NB: lock is implied */
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testl %edx, %edx
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jz 3f
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cmpl $-ETIMEDOUT, %eax
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je 4f
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cmpl $-EINVAL, %eax
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jne 1b
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4: movl %eax, %edx
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negl %edx
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3: movl %edx, %eax
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7: popl %ebx
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cfi_adjust_cfa_offset(-4)
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cfi_restore(%ebx)
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popl %ebp
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cfi_adjust_cfa_offset(-4)
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cfi_restore(%ebp)
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ret
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8: movl $ETIMEDOUT, %eax
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jmp 7b
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# ifndef __ASSUME_FUTEX_CLOCK_REALTIME
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.Lreltmo:
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/* Check for a valid timeout value. */
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cmpl $1000000000, 4(%edx)
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jae 3f
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pushl %esi
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cfi_adjust_cfa_offset(4)
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cfi_rel_offset(%esi, 0)
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pushl %edi
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cfi_adjust_cfa_offset(4)
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cfi_rel_offset(%edi, 0)
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/* Stack frame for the timespec and timeval structs. */
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subl $8, %esp
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cfi_adjust_cfa_offset(8)
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movl %ecx, %ebp
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movl %edx, %edi
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movl $2, %edx
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xchgl %edx, (%ebp)
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test %edx, %edx
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je 6f
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1:
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/* Get current time. */
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movl %esp, %ebx
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xorl %ecx, %ecx
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movl $__NR_gettimeofday, %eax
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ENTER_KERNEL
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/* Compute relative timeout. */
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movl 4(%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 (%edi), %ecx
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movl 4(%edi), %edx
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subl (%esp), %ecx
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subl %eax, %edx
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jns 4f
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addl $1000000000, %edx
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subl $1, %ecx
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4: testl %ecx, %ecx
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js 2f /* Time is already up. */
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/* Store relative timeout. */
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movl %ecx, (%esp)
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movl %edx, 4(%esp)
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/* Futex call. */
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movl %ebp, %ebx
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movl $2, %edx
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movl %esp, %esi
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movl 16(%esp), %ecx
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LOAD_FUTEX_WAIT (%ecx)
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movl $SYS_futex, %eax
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ENTER_KERNEL
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/* NB: %edx == 2 */
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xchgl %edx, (%ebp)
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testl %edx, %edx
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je 6f
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cmpl $-ETIMEDOUT, %eax
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jne 1b
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2: movl $ETIMEDOUT, %edx
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6: addl $8, %esp
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cfi_adjust_cfa_offset(-8)
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popl %edi
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cfi_adjust_cfa_offset(-4)
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cfi_restore(%edi)
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popl %esi
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cfi_adjust_cfa_offset(-4)
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cfi_restore(%esi)
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7: popl %ebx
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cfi_adjust_cfa_offset(-4)
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cfi_restore(%ebx)
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popl %ebp
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cfi_adjust_cfa_offset(-4)
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cfi_restore(%ebp)
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movl %edx, %eax
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ret
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3: movl $EINVAL, %edx
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jmp 7b
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# endif
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cfi_endproc
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.size __lll_timedlock_wait,.-__lll_timedlock_wait
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#endif
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.globl __lll_unlock_wake_private
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.type __lll_unlock_wake_private,@function
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.hidden __lll_unlock_wake_private
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.align 16
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__lll_unlock_wake_private:
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cfi_startproc
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pushl %ebx
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cfi_adjust_cfa_offset(4)
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pushl %ecx
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cfi_adjust_cfa_offset(4)
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pushl %edx
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cfi_adjust_cfa_offset(4)
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cfi_offset(%ebx, -8)
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cfi_offset(%ecx, -12)
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cfi_offset(%edx, -16)
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movl %eax, %ebx
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movl $0, (%eax)
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LOAD_PRIVATE_FUTEX_WAKE (%ecx)
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movl $1, %edx /* Wake one thread. */
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movl $SYS_futex, %eax
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ENTER_KERNEL
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popl %edx
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cfi_adjust_cfa_offset(-4)
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cfi_restore(%edx)
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popl %ecx
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cfi_adjust_cfa_offset(-4)
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cfi_restore(%ecx)
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popl %ebx
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cfi_adjust_cfa_offset(-4)
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cfi_restore(%ebx)
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ret
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cfi_endproc
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.size __lll_unlock_wake_private,.-__lll_unlock_wake_private
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#if !IS_IN (libc)
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.globl __lll_unlock_wake
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.type __lll_unlock_wake,@function
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.hidden __lll_unlock_wake
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.align 16
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__lll_unlock_wake:
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cfi_startproc
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pushl %ebx
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cfi_adjust_cfa_offset(4)
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pushl %ecx
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cfi_adjust_cfa_offset(4)
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pushl %edx
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cfi_adjust_cfa_offset(4)
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cfi_offset(%ebx, -8)
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cfi_offset(%ecx, -12)
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cfi_offset(%edx, -16)
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movl %eax, %ebx
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movl $0, (%eax)
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LOAD_FUTEX_WAKE (%ecx)
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movl $1, %edx /* Wake one thread. */
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movl $SYS_futex, %eax
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ENTER_KERNEL
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popl %edx
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cfi_adjust_cfa_offset(-4)
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cfi_restore(%edx)
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popl %ecx
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cfi_adjust_cfa_offset(-4)
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cfi_restore(%ecx)
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popl %ebx
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cfi_adjust_cfa_offset(-4)
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cfi_restore(%ebx)
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ret
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cfi_endproc
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.size __lll_unlock_wake,.-__lll_unlock_wake
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.globl __lll_timedwait_tid
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.type __lll_timedwait_tid,@function
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.hidden __lll_timedwait_tid
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.align 16
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__lll_timedwait_tid:
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pushl %edi
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pushl %esi
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pushl %ebx
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pushl %ebp
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movl %eax, %ebp
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movl %edx, %edi
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subl $8, %esp
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/* Get current time. */
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2: movl %esp, %ebx
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xorl %ecx, %ecx
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movl $__NR_gettimeofday, %eax
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ENTER_KERNEL
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/* Compute relative timeout. */
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movl 4(%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 (%edi), %ecx
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movl 4(%edi), %edx
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subl (%esp), %ecx
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subl %eax, %edx
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jns 5f
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addl $1000000000, %edx
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subl $1, %ecx
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5: testl %ecx, %ecx
|
|
js 6f /* Time is already up. */
|
|
|
|
movl %ecx, (%esp) /* Store relative timeout. */
|
|
movl %edx, 4(%esp)
|
|
|
|
movl (%ebp), %edx
|
|
testl %edx, %edx
|
|
jz 4f
|
|
|
|
movl %esp, %esi
|
|
/* XXX The kernel so far uses global futex for the wakeup at
|
|
all times. */
|
|
xorl %ecx, %ecx /* movl $FUTEX_WAIT, %ecx */
|
|
movl %ebp, %ebx
|
|
movl $SYS_futex, %eax
|
|
ENTER_KERNEL
|
|
|
|
cmpl $0, (%ebx)
|
|
jne 1f
|
|
4: xorl %eax, %eax
|
|
|
|
3: addl $8, %esp
|
|
popl %ebp
|
|
popl %ebx
|
|
popl %esi
|
|
popl %edi
|
|
ret
|
|
|
|
1: cmpl $-ETIMEDOUT, %eax
|
|
jne 2b
|
|
6: movl $ETIMEDOUT, %eax
|
|
jmp 3b
|
|
.size __lll_timedwait_tid,.-__lll_timedwait_tid
|
|
#endif
|