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Remove x86 assembler rwlock code
With the recent tuning the C version of rwlocks is basically the same performance as the x86 assembler version for uncontended locks (with a a few cycles near the run-to-run variability). For others it should not matter anyways. So remove the assembler code and use the C version like other architectures.
This commit is contained in:
Andi Kleen
parent
8491ed6d70
commit
b7aa8caace
23
ChangeLog
23
ChangeLog
@ -1,3 +1,26 @@
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2014-06-13 Andi Kleen <ak@linux.intel.com>
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* sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S: Remove.
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* sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedrdlock.S: dito.
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* sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedwrlock.S: dito.
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* sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_unlock.S: dito.
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* sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_wrlock.S: dito.
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* sysdeps/unix/sysv/linux/i386/i586/pthread_rwlock_rdlock.S: dito.
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* sysdeps/unix/sysv/linux/i386/i586/pthread_rwlock_timedrdlock.S: dito.
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* sysdeps/unix/sysv/linux/i386/i586/pthread_rwlock_timedwrlock.S: dito.
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* sysdeps/unix/sysv/linux/i386/i586/pthread_rwlock_unlock.S: dito.
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* sysdeps/unix/sysv/linux/i386/i586/pthread_rwlock_wrlock.S: dito.
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* sysdeps/unix/sysv/linux/i386/i686/pthread_rwlock_rdlock.S: dito.
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* sysdeps/unix/sysv/linux/i386/i686/pthread_rwlock_timedrdlock.S: dito.
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* sysdeps/unix/sysv/linux/i386/i686/pthread_rwlock_timedwrlock.S: dito.
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* sysdeps/unix/sysv/linux/i386/i686/pthread_rwlock_unlock.S: dito.
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* sysdeps/unix/sysv/linux/i386/i686/pthread_rwlock_wrlock.S: dito.
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* sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_rdlock.S: dito.
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* sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_timedrdlock.S: dito.
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* sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_timedwrlock.S: dito.
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* sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_unlock.S: dito.
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* sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_wrlock.S: dito.
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2014-06-13 Andi Kleen <ak@linux.intel.com>
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* nptl/pthread_rwlock_rdlock.c: Include elide.h.
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@ -1,192 +0,0 @@
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/* Copyright (C) 2002-2014 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 <lowlevellock.h>
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#include <lowlevelrwlock.h>
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#include <pthread-errnos.h>
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#include <kernel-features.h>
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#include <stap-probe.h>
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.text
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.globl __pthread_rwlock_rdlock
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.type __pthread_rwlock_rdlock,@function
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.align 16
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__pthread_rwlock_rdlock:
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cfi_startproc
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pushl %esi
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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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cfi_offset(%esi, -8)
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cfi_offset(%ebx, -12)
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xorl %esi, %esi
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movl 12(%esp), %ebx
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LIBC_PROBE (rdlock_entry, 1, %ebx)
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/* Get the 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 MUTEX == 0
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cmpxchgl %edx, (%ebx)
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#else
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cmpxchgl %edx, MUTEX(%ebx)
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#endif
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jnz 1f
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2: movl WRITER(%ebx), %eax
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testl %eax, %eax
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jne 14f
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cmpl $0, WRITERS_QUEUED(%ebx)
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je 5f
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cmpb $0, FLAGS(%ebx)
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je 5f
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3: addl $1, READERS_QUEUED(%ebx)
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je 4f
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movl READERS_WAKEUP(%ebx), %edx
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LOCK
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#if MUTEX == 0
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subl $1, (%ebx)
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#else
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subl $1, MUTEX(%ebx)
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#endif
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jne 10f
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11:
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#ifdef __ASSUME_PRIVATE_FUTEX
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movzbl PSHARED(%ebx), %ecx
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xorl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT, %ecx
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#else
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movzbl PSHARED(%ebx), %ecx
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# if FUTEX_WAIT != 0
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orl $FUTEX_WAIT, %ecx
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# endif
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xorl %gs:PRIVATE_FUTEX, %ecx
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#endif
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addl $READERS_WAKEUP, %ebx
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movl $SYS_futex, %eax
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ENTER_KERNEL
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subl $READERS_WAKEUP, %ebx
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/* Reget the 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 MUTEX == 0
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cmpxchgl %edx, (%ebx)
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#else
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cmpxchgl %edx, MUTEX(%ebx)
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#endif
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jnz 12f
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13: subl $1, READERS_QUEUED(%ebx)
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jmp 2b
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5: xorl %edx, %edx
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addl $1, NR_READERS(%ebx)
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je 8f
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9: LOCK
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#if MUTEX == 0
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subl $1, (%ebx)
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#else
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subl $1, MUTEX(%ebx)
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#endif
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jne 6f
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7:
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movl %edx, %eax
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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 %esi
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cfi_adjust_cfa_offset(-4)
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cfi_restore(%esi)
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ret
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cfi_adjust_cfa_offset(8)
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cfi_offset(%esi, -8)
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cfi_offset(%ebx, -12)
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1:
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#if MUTEX == 0
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movl %ebx, %edx
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#else
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leal MUTEX(%ebx), %edx
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#endif
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movzbl PSHARED(%ebx), %ecx
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call __lll_lock_wait
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jmp 2b
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14: cmpl %gs:TID, %eax
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jne 3b
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/* Deadlock detected. */
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movl $EDEADLK, %edx
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jmp 9b
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6:
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#if MUTEX == 0
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movl %ebx, %eax
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#else
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leal MUTEX(%ebx), %eax
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#endif
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movzbl PSHARED(%ebx), %ecx
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call __lll_unlock_wake
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jmp 7b
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/* Overflow. */
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8: subl $1, NR_READERS(%ebx)
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movl $EAGAIN, %edx
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jmp 9b
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/* Overflow. */
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4: subl $1, READERS_QUEUED(%ebx)
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movl $EAGAIN, %edx
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jmp 9b
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10:
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#if MUTEX == 0
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movl %ebx, %eax
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#else
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leal MUTEX(%ebx), %eax
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#endif
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movzbl PSHARED(%ebx), %ecx
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call __lll_unlock_wake
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jmp 11b
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12:
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#if MUTEX == 0
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movl %ebx, %edx
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#else
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leal MUTEX(%ebx), %edx
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#endif
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movzbl PSHARED(%ebx), %ecx
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call __lll_lock_wait
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jmp 13b
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cfi_endproc
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.size __pthread_rwlock_rdlock,.-__pthread_rwlock_rdlock
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strong_alias (__pthread_rwlock_rdlock, pthread_rwlock_rdlock)
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hidden_def (__pthread_rwlock_rdlock)
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@ -1,243 +0,0 @@
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/* Copyright (C) 2002-2014 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 <lowlevellock.h>
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#include <lowlevelrwlock.h>
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#include <pthread-errnos.h>
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#include <kernel-features.h>
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.text
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.globl pthread_rwlock_timedrdlock
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.type pthread_rwlock_timedrdlock,@function
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.align 16
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pthread_rwlock_timedrdlock:
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cfi_startproc
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pushl %esi
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cfi_adjust_cfa_offset(4)
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pushl %edi
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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 %ebp
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cfi_adjust_cfa_offset(4)
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cfi_offset(%esi, -8)
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cfi_offset(%edi, -12)
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cfi_offset(%ebx, -16)
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cfi_offset(%ebp, -20)
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subl $8, %esp
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cfi_adjust_cfa_offset(8)
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movl 28(%esp), %ebp
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movl 32(%esp), %edi
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/* Get the 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 MUTEX == 0
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cmpxchgl %edx, (%ebp)
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#else
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cmpxchgl %edx, MUTEX(%ebp)
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#endif
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jnz 1f
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2: movl WRITER(%ebp), %eax
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testl %eax, %eax
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jne 14f
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cmpl $0, WRITERS_QUEUED(%ebp)
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je 5f
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cmpb $0, FLAGS(%ebp)
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je 5f
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/* Check the value of the timeout parameter. */
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3: cmpl $1000000000, 4(%edi)
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jae 19f
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addl $1, READERS_QUEUED(%ebp)
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je 4f
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movl READERS_WAKEUP(%ebp), %esi
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LOCK
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#if MUTEX == 0
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subl $1, (%ebp)
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#else
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subl $1, MUTEX(%ebp)
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#endif
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jne 10f
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/* Get current time. */
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11: 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 15f
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addl $1000000000, %edx
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subl $1, %ecx
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15: testl %ecx, %ecx
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js 16f /* Time is already up. */
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/* Futex call. */
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movl %ecx, (%esp) /* Store relative timeout. */
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movl %edx, 4(%esp)
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movl %esi, %edx
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#ifdef __ASSUME_PRIVATE_FUTEX
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movzbl PSHARED(%ebp), %ecx
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xorl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT, %ecx
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#else
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movzbl PSHARED(%ebp), %ecx
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# if FUTEX_WAIT != 0
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orl $FUTEX_WAIT, %ecx
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# endif
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xorl %gs:PRIVATE_FUTEX, %ecx
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#endif
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movl %esp, %esi
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leal READERS_WAKEUP(%ebp), %ebx
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movl $SYS_futex, %eax
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ENTER_KERNEL
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movl %eax, %esi
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17:
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/* Reget the 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 MUTEX == 0
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cmpxchgl %edx, (%ebp)
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#else
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cmpxchgl %edx, MUTEX(%ebp)
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#endif
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jnz 12f
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13: subl $1, READERS_QUEUED(%ebp)
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cmpl $-ETIMEDOUT, %esi
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jne 2b
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18: movl $ETIMEDOUT, %edx
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jmp 9f
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5: xorl %edx, %edx
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addl $1, NR_READERS(%ebp)
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je 8f
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9: LOCK
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#if MUTEX == 0
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subl $1, (%ebp)
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#else
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subl $1, MUTEX(%ebp)
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#endif
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jne 6f
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7: movl %edx, %eax
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|
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addl $8, %esp
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cfi_adjust_cfa_offset(-8)
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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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popl %ebx
|
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cfi_adjust_cfa_offset(-4)
|
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cfi_restore(%ebx)
|
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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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ret
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|
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cfi_adjust_cfa_offset(24)
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cfi_offset(%esi, -8)
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cfi_offset(%edi, -12)
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cfi_offset(%ebx, -16)
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cfi_offset(%ebp, -20)
|
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1:
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#if MUTEX == 0
|
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movl %ebp, %edx
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#else
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leal MUTEX(%ebp), %edx
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#endif
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movzbl PSHARED(%ebp), %ecx
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call __lll_lock_wait
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jmp 2b
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|
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14: cmpl %gs:TID, %eax
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jne 3b
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movl $EDEADLK, %edx
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jmp 9b
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6:
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#if MUTEX == 0
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movl %ebp, %eax
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#else
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leal MUTEX(%ebp), %eax
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#endif
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movzbl PSHARED(%ebp), %ecx
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call __lll_unlock_wake
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jmp 7b
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|
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/* Overflow. */
|
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8: subl $1, NR_READERS(%ebp)
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movl $EAGAIN, %edx
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jmp 9b
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|
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/* Overflow. */
|
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4: subl $1, READERS_QUEUED(%ebp)
|
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movl $EAGAIN, %edx
|
||||
jmp 9b
|
||||
|
||||
10:
|
||||
#if MUTEX == 0
|
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movl %ebp, %eax
|
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#else
|
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leal MUTEX(%ebp), %eax
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#endif
|
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movzbl PSHARED(%ebp), %ecx
|
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call __lll_unlock_wake
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jmp 11b
|
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|
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12:
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#if MUTEX == 0
|
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movl %ebp, %edx
|
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#else
|
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leal MUTEX(%ebp), %edx
|
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#endif
|
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movzbl PSHARED(%ebp), %ecx
|
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call __lll_lock_wait
|
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jmp 13b
|
||||
|
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16: movl $-ETIMEDOUT, %esi
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jmp 17b
|
||||
|
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19: movl $EINVAL, %edx
|
||||
jmp 9b
|
||||
cfi_endproc
|
||||
.size pthread_rwlock_timedrdlock,.-pthread_rwlock_timedrdlock
|
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@ -1,236 +0,0 @@
|
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/* Copyright (C) 2002-2014 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, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <sysdep.h>
|
||||
#include <lowlevellock.h>
|
||||
#include <lowlevelrwlock.h>
|
||||
#include <pthread-errnos.h>
|
||||
#include <kernel-features.h>
|
||||
|
||||
|
||||
.text
|
||||
|
||||
.globl pthread_rwlock_timedwrlock
|
||||
.type pthread_rwlock_timedwrlock,@function
|
||||
.align 16
|
||||
pthread_rwlock_timedwrlock:
|
||||
cfi_startproc
|
||||
pushl %esi
|
||||
cfi_adjust_cfa_offset(4)
|
||||
pushl %edi
|
||||
cfi_adjust_cfa_offset(4)
|
||||
pushl %ebx
|
||||
cfi_adjust_cfa_offset(4)
|
||||
pushl %ebp
|
||||
cfi_adjust_cfa_offset(4)
|
||||
cfi_offset(%esi, -8)
|
||||
cfi_offset(%edi, -12)
|
||||
cfi_offset(%ebx, -16)
|
||||
cfi_offset(%ebp, -20)
|
||||
subl $8, %esp
|
||||
cfi_adjust_cfa_offset(8)
|
||||
|
||||
movl 28(%esp), %ebp
|
||||
movl 32(%esp), %edi
|
||||
|
||||
/* Get the lock. */
|
||||
movl $1, %edx
|
||||
xorl %eax, %eax
|
||||
LOCK
|
||||
#if MUTEX == 0
|
||||
cmpxchgl %edx, (%ebp)
|
||||
#else
|
||||
cmpxchgl %edx, MUTEX(%ebp)
|
||||
#endif
|
||||
jnz 1f
|
||||
|
||||
2: movl WRITER(%ebp), %eax
|
||||
testl %eax, %eax
|
||||
jne 14f
|
||||
cmpl $0, NR_READERS(%ebp)
|
||||
je 5f
|
||||
|
||||
/* Check the value of the timeout parameter. */
|
||||
3: cmpl $1000000000, 4(%edi)
|
||||
jae 19f
|
||||
|
||||
addl $1, WRITERS_QUEUED(%ebp)
|
||||
je 4f
|
||||
|
||||
movl WRITERS_WAKEUP(%ebp), %esi
|
||||
|
||||
LOCK
|
||||
#if MUTEX == 0
|
||||
subl $1, (%ebp)
|
||||
#else
|
||||
subl $1, MUTEX(%ebp)
|
||||
#endif
|
||||
jne 10f
|
||||
|
||||
/* Get current time. */
|
||||
11: movl %esp, %ebx
|
||||
xorl %ecx, %ecx
|
||||
movl $__NR_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 15f
|
||||
addl $1000000000, %edx
|
||||
subl $1, %ecx
|
||||
15: testl %ecx, %ecx
|
||||
js 16f /* Time is already up. */
|
||||
|
||||
/* Futex call. */
|
||||
movl %ecx, (%esp) /* Store relative timeout. */
|
||||
movl %edx, 4(%esp)
|
||||
|
||||
movl %esi, %edx
|
||||
#ifdef __ASSUME_PRIVATE_FUTEX
|
||||
movzbl PSHARED(%ebp), %ecx
|
||||
xorl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT, %ecx
|
||||
#else
|
||||
movzbl PSHARED(%ebp), %ecx
|
||||
# if FUTEX_WAIT != 0
|
||||
orl $FUTEX_WAIT, %ecx
|
||||
# endif
|
||||
xorl %gs:PRIVATE_FUTEX, %ecx
|
||||
#endif
|
||||
movl %esp, %esi
|
||||
leal WRITERS_WAKEUP(%ebp), %ebx
|
||||
movl $SYS_futex, %eax
|
||||
ENTER_KERNEL
|
||||
movl %eax, %esi
|
||||
17:
|
||||
|
||||
/* Reget the lock. */
|
||||
movl $1, %edx
|
||||
xorl %eax, %eax
|
||||
LOCK
|
||||
#if MUTEX == 0
|
||||
cmpxchgl %edx, (%ebp)
|
||||
#else
|
||||
cmpxchgl %edx, MUTEX(%ebp)
|
||||
#endif
|
||||
jnz 12f
|
||||
|
||||
13: subl $1, WRITERS_QUEUED(%ebp)
|
||||
cmpl $-ETIMEDOUT, %esi
|
||||
jne 2b
|
||||
|
||||
18: movl $ETIMEDOUT, %edx
|
||||
jmp 9f
|
||||
|
||||
|
||||
5: xorl %edx, %edx
|
||||
movl %gs:TID, %eax
|
||||
movl %eax, WRITER(%ebp)
|
||||
9: LOCK
|
||||
#if MUTEX == 0
|
||||
subl $1, (%ebp)
|
||||
#else
|
||||
subl $1, MUTEX(%ebp)
|
||||
#endif
|
||||
jne 6f
|
||||
|
||||
7: movl %edx, %eax
|
||||
|
||||
addl $8, %esp
|
||||
cfi_adjust_cfa_offset(-8)
|
||||
popl %ebp
|
||||
cfi_adjust_cfa_offset(-4)
|
||||
cfi_restore(%ebp)
|
||||
popl %ebx
|
||||
cfi_adjust_cfa_offset(-4)
|
||||
cfi_restore(%ebx)
|
||||
popl %edi
|
||||
cfi_adjust_cfa_offset(-4)
|
||||
cfi_restore(%edi)
|
||||
popl %esi
|
||||
cfi_adjust_cfa_offset(-4)
|
||||
cfi_restore(%esi)
|
||||
ret
|
||||
|
||||
cfi_adjust_cfa_offset(24)
|
||||
cfi_offset(%esi, -8)
|
||||
cfi_offset(%edi, -12)
|
||||
cfi_offset(%ebx, -16)
|
||||
cfi_offset(%ebp, -20)
|
||||
1:
|
||||
#if MUTEX == 0
|
||||
movl %ebp, %edx
|
||||
#else
|
||||
leal MUTEX(%ebp), %edx
|
||||
#endif
|
||||
movzbl PSHARED(%ebp), %ecx
|
||||
call __lll_lock_wait
|
||||
jmp 2b
|
||||
|
||||
14: cmpl %gs:TID, %eax
|
||||
jne 3b
|
||||
20: movl $EDEADLK, %edx
|
||||
jmp 9b
|
||||
|
||||
6:
|
||||
#if MUTEX == 0
|
||||
movl %ebp, %eax
|
||||
#else
|
||||
leal MUTEX(%ebp), %eax
|
||||
#endif
|
||||
movzbl PSHARED(%ebp), %ecx
|
||||
call __lll_unlock_wake
|
||||
jmp 7b
|
||||
|
||||
/* Overflow. */
|
||||
4: subl $1, WRITERS_QUEUED(%ebp)
|
||||
movl $EAGAIN, %edx
|
||||
jmp 9b
|
||||
|
||||
10:
|
||||
#if MUTEX == 0
|
||||
movl %ebp, %eax
|
||||
#else
|
||||
leal MUTEX(%ebp), %eax
|
||||
#endif
|
||||
movzbl PSHARED(%ebp), %ecx
|
||||
call __lll_unlock_wake
|
||||
jmp 11b
|
||||
|
||||
12:
|
||||
#if MUTEX == 0
|
||||
movl %ebp, %edx
|
||||
#else
|
||||
leal MUTEX(%ebp), %edx
|
||||
#endif
|
||||
movzbl PSHARED(%ebp), %ecx
|
||||
call __lll_lock_wait
|
||||
jmp 13b
|
||||
|
||||
16: movl $-ETIMEDOUT, %esi
|
||||
jmp 17b
|
||||
|
||||
19: movl $EINVAL, %edx
|
||||
jmp 9b
|
||||
cfi_endproc
|
||||
.size pthread_rwlock_timedwrlock,.-pthread_rwlock_timedwrlock
|
||||
@ -1,151 +0,0 @@
|
||||
/* Copyright (C) 2002-2014 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, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <sysdep.h>
|
||||
#include <lowlevellock.h>
|
||||
#include <lowlevelrwlock.h>
|
||||
#include <kernel-features.h>
|
||||
|
||||
|
||||
.text
|
||||
|
||||
.globl __pthread_rwlock_unlock
|
||||
.type __pthread_rwlock_unlock,@function
|
||||
.align 16
|
||||
__pthread_rwlock_unlock:
|
||||
cfi_startproc
|
||||
pushl %ebx
|
||||
cfi_adjust_cfa_offset(4)
|
||||
pushl %edi
|
||||
cfi_adjust_cfa_offset(4)
|
||||
cfi_offset(%ebx, -8)
|
||||
cfi_offset(%edi, -12)
|
||||
|
||||
movl 12(%esp), %edi
|
||||
|
||||
/* Get the lock. */
|
||||
movl $1, %edx
|
||||
xorl %eax, %eax
|
||||
LOCK
|
||||
#if MUTEX == 0
|
||||
cmpxchgl %edx, (%edi)
|
||||
#else
|
||||
cmpxchgl %edx, MUTEX(%edi)
|
||||
#endif
|
||||
jnz 1f
|
||||
|
||||
2: cmpl $0, WRITER(%edi)
|
||||
jne 5f
|
||||
subl $1, NR_READERS(%edi)
|
||||
jnz 6f
|
||||
|
||||
5: movl $0, WRITER(%edi)
|
||||
|
||||
movl $1, %edx
|
||||
leal WRITERS_WAKEUP(%edi), %ebx
|
||||
cmpl $0, WRITERS_QUEUED(%edi)
|
||||
jne 0f
|
||||
|
||||
/* If also no readers waiting nothing to do. */
|
||||
cmpl $0, READERS_QUEUED(%edi)
|
||||
je 6f
|
||||
|
||||
movl $0x7fffffff, %edx
|
||||
leal READERS_WAKEUP(%edi), %ebx
|
||||
|
||||
0: addl $1, (%ebx)
|
||||
LOCK
|
||||
#if MUTEX == 0
|
||||
subl $1, (%edi)
|
||||
#else
|
||||
subl $1, MUTEX(%edi)
|
||||
#endif
|
||||
jne 7f
|
||||
|
||||
8:
|
||||
#ifdef __ASSUME_PRIVATE_FUTEX
|
||||
movzbl PSHARED(%edi), %ecx
|
||||
xorl $FUTEX_PRIVATE_FLAG|FUTEX_WAKE, %ecx
|
||||
#else
|
||||
movzbl PSHARED(%edi), %ecx
|
||||
orl $FUTEX_WAKE, %ecx
|
||||
xorl %gs:PRIVATE_FUTEX, %ecx
|
||||
#endif
|
||||
movl $SYS_futex, %eax
|
||||
ENTER_KERNEL
|
||||
|
||||
xorl %eax, %eax
|
||||
popl %edi
|
||||
cfi_adjust_cfa_offset(-4)
|
||||
cfi_restore(%edi)
|
||||
popl %ebx
|
||||
cfi_adjust_cfa_offset(-4)
|
||||
cfi_restore(%ebx)
|
||||
ret
|
||||
|
||||
cfi_adjust_cfa_offset(8)
|
||||
cfi_offset(%ebx, -8)
|
||||
cfi_offset(%edi, -12)
|
||||
.align 16
|
||||
6: LOCK
|
||||
#if MUTEX == 0
|
||||
subl $1, (%edi)
|
||||
#else
|
||||
subl $1, MUTEX(%edi)
|
||||
#endif
|
||||
jne 3f
|
||||
|
||||
4: xorl %eax, %eax
|
||||
popl %edi
|
||||
popl %ebx
|
||||
ret
|
||||
|
||||
1:
|
||||
#if MUTEX == 0
|
||||
movl %edi, %edx
|
||||
#else
|
||||
leal MUTEX(%edi), %edx
|
||||
#endif
|
||||
movzbl PSHARED(%edi), %ecx
|
||||
call __lll_lock_wait
|
||||
jmp 2b
|
||||
|
||||
3:
|
||||
#if MUTEX == 0
|
||||
movl %edi, %eax
|
||||
#else
|
||||
leal MUTEX(%edi), %eax
|
||||
#endif
|
||||
movzbl PSHARED(%edi), %ecx
|
||||
call __lll_unlock_wake
|
||||
jmp 4b
|
||||
|
||||
7:
|
||||
#if MUTEX == 0
|
||||
movl %edi, %eax
|
||||
#else
|
||||
leal MUTEX(%edi), %eax
|
||||
#endif
|
||||
movzbl PSHARED(%edi), %ecx
|
||||
call __lll_unlock_wake
|
||||
jmp 8b
|
||||
cfi_endproc
|
||||
.size __pthread_rwlock_unlock,.-__pthread_rwlock_unlock
|
||||
|
||||
strong_alias (__pthread_rwlock_unlock, pthread_rwlock_unlock)
|
||||
hidden_def (__pthread_rwlock_unlock)
|
||||
@ -1,183 +0,0 @@
|
||||
/* Copyright (C) 2002-2014 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, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <sysdep.h>
|
||||
#include <lowlevellock.h>
|
||||
#include <lowlevelrwlock.h>
|
||||
#include <pthread-errnos.h>
|
||||
#include <kernel-features.h>
|
||||
|
||||
#include <stap-probe.h>
|
||||
|
||||
.text
|
||||
|
||||
.globl __pthread_rwlock_wrlock
|
||||
.type __pthread_rwlock_wrlock,@function
|
||||
.align 16
|
||||
__pthread_rwlock_wrlock:
|
||||
cfi_startproc
|
||||
pushl %esi
|
||||
cfi_adjust_cfa_offset(4)
|
||||
pushl %ebx
|
||||
cfi_adjust_cfa_offset(4)
|
||||
cfi_offset(%esi, -8)
|
||||
cfi_offset(%ebx, -12)
|
||||
|
||||
xorl %esi, %esi
|
||||
movl 12(%esp), %ebx
|
||||
|
||||
LIBC_PROBE (wrlock_entry, 1, %ebx)
|
||||
|
||||
/* Get the lock. */
|
||||
movl $1, %edx
|
||||
xorl %eax, %eax
|
||||
LOCK
|
||||
#if MUTEX == 0
|
||||
cmpxchgl %edx, (%ebx)
|
||||
#else
|
||||
cmpxchgl %edx, MUTEX(%ebx)
|
||||
#endif
|
||||
jnz 1f
|
||||
|
||||
2: movl WRITER(%ebx), %eax
|
||||
testl %eax, %eax
|
||||
jne 14f
|
||||
cmpl $0, NR_READERS(%ebx)
|
||||
je 5f
|
||||
|
||||
3: addl $1, WRITERS_QUEUED(%ebx)
|
||||
je 4f
|
||||
|
||||
movl WRITERS_WAKEUP(%ebx), %edx
|
||||
|
||||
LOCK
|
||||
#if MUTEX == 0
|
||||
subl $1, (%ebx)
|
||||
#else
|
||||
subl $1, MUTEX(%ebx)
|
||||
#endif
|
||||
jne 10f
|
||||
|
||||
11:
|
||||
#ifdef __ASSUME_PRIVATE_FUTEX
|
||||
movzbl PSHARED(%ebx), %ecx
|
||||
xorl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT, %ecx
|
||||
#else
|
||||
movzbl PSHARED(%ebx), %ecx
|
||||
# if FUTEX_WAIT != 0
|
||||
orl $FUTEX_WAIT, %ecx
|
||||
# endif
|
||||
xorl %gs:PRIVATE_FUTEX, %ecx
|
||||
#endif
|
||||
addl $WRITERS_WAKEUP, %ebx
|
||||
movl $SYS_futex, %eax
|
||||
ENTER_KERNEL
|
||||
|
||||
subl $WRITERS_WAKEUP, %ebx
|
||||
|
||||
/* Reget the lock. */
|
||||
movl $1, %edx
|
||||
xorl %eax, %eax
|
||||
LOCK
|
||||
#if MUTEX == 0
|
||||
cmpxchgl %edx, (%ebx)
|
||||
#else
|
||||
cmpxchgl %edx, MUTEX(%ebx)
|
||||
#endif
|
||||
jnz 12f
|
||||
|
||||
13: subl $1, WRITERS_QUEUED(%ebx)
|
||||
jmp 2b
|
||||
|
||||
5: xorl %edx, %edx
|
||||
movl %gs:TID, %eax
|
||||
movl %eax, WRITER(%ebx)
|
||||
9: LOCK
|
||||
#if MUTEX == 0
|
||||
subl $1, (%ebx)
|
||||
#else
|
||||
subl $1, MUTEX(%ebx)
|
||||
#endif
|
||||
jne 6f
|
||||
7:
|
||||
|
||||
movl %edx, %eax
|
||||
popl %ebx
|
||||
cfi_adjust_cfa_offset(-4)
|
||||
cfi_restore(%ebx)
|
||||
popl %esi
|
||||
cfi_adjust_cfa_offset(-4)
|
||||
cfi_restore(%esi)
|
||||
ret
|
||||
|
||||
cfi_adjust_cfa_offset(8)
|
||||
cfi_offset(%esi, -8)
|
||||
cfi_offset(%ebx, -12)
|
||||
1:
|
||||
#if MUTEX == 0
|
||||
movl %ebx, %edx
|
||||
#else
|
||||
leal MUTEX(%ebx), %edx
|
||||
#endif
|
||||
movzbl PSHARED(%ebx), %ecx
|
||||
call __lll_lock_wait
|
||||
jmp 2b
|
||||
|
||||
14: cmpl %gs:TID , %eax
|
||||
jne 3b
|
||||
movl $EDEADLK, %edx
|
||||
jmp 9b
|
||||
|
||||
6:
|
||||
#if MUTEX == 0
|
||||
movl %ebx, %eax
|
||||
#else
|
||||
leal MUTEX(%ebx), %eax
|
||||
#endif
|
||||
movzbl PSHARED(%ebx), %ecx
|
||||
call __lll_unlock_wake
|
||||
jmp 7b
|
||||
|
||||
4: subl $1, WRITERS_QUEUED(%ebx)
|
||||
movl $EAGAIN, %edx
|
||||
jmp 9b
|
||||
|
||||
10:
|
||||
#if MUTEX == 0
|
||||
movl %ebx, %eax
|
||||
#else
|
||||
leal MUTEX(%ebx), %eax
|
||||
#endif
|
||||
movzbl PSHARED(%ebx), %ecx
|
||||
call __lll_unlock_wake
|
||||
jmp 11b
|
||||
|
||||
12:
|
||||
#if MUTEX == 0
|
||||
movl %ebx, %edx
|
||||
#else
|
||||
leal MUTEX(%ebx), %edx
|
||||
#endif
|
||||
movzbl PSHARED(%ebx), %ecx
|
||||
call __lll_lock_wait
|
||||
jmp 13b
|
||||
cfi_endproc
|
||||
.size __pthread_rwlock_wrlock,.-__pthread_rwlock_wrlock
|
||||
|
||||
strong_alias (__pthread_rwlock_wrlock, pthread_rwlock_wrlock)
|
||||
hidden_def (__pthread_rwlock_wrlock)
|
||||
@ -1,19 +0,0 @@
|
||||
/* Copyright (C) 2003-2014 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
|
||||
|
||||
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, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include "../i486/pthread_rwlock_rdlock.S"
|
||||
@ -1,19 +0,0 @@
|
||||
/* Copyright (C) 2003-2014 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
|
||||
|
||||
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, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include "../i486/pthread_rwlock_timedrdlock.S"
|
||||
@ -1,19 +0,0 @@
|
||||
/* Copyright (C) 2003-2014 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
|
||||
|
||||
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, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include "../i486/pthread_rwlock_timedwrlock.S"
|
||||
@ -1,19 +0,0 @@
|
||||
/* Copyright (C) 2003-2014 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
|
||||
|
||||
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, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include "../i486/pthread_rwlock_unlock.S"
|
||||
@ -1,19 +0,0 @@
|
||||
/* Copyright (C) 2003-2014 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
|
||||
|
||||
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, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include "../i486/pthread_rwlock_wrlock.S"
|
||||
@ -1,19 +0,0 @@
|
||||
/* Copyright (C) 2003-2014 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
|
||||
|
||||
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, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include "../i486/pthread_rwlock_rdlock.S"
|
||||
@ -1,19 +0,0 @@
|
||||
/* Copyright (C) 2003-2014 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
|
||||
|
||||
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, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include "../i486/pthread_rwlock_timedrdlock.S"
|
||||
@ -1,19 +0,0 @@
|
||||
/* Copyright (C) 2003-2014 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
|
||||
|
||||
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, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include "../i486/pthread_rwlock_timedwrlock.S"
|
||||
@ -1,20 +0,0 @@
|
||||
/* Copyright (C) 2003-2014 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
|
||||
|
||||
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, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#define HAVE_CMOV 1
|
||||
#include "../i486/pthread_rwlock_unlock.S"
|
||||
@ -1,19 +0,0 @@
|
||||
/* Copyright (C) 2003-2014 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
|
||||
|
||||
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, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include "../i486/pthread_rwlock_wrlock.S"
|
||||
@ -1,177 +0,0 @@
|
||||
/* Copyright (C) 2002-2014 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, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <sysdep.h>
|
||||
#include <lowlevellock.h>
|
||||
#include <lowlevelrwlock.h>
|
||||
#include <pthread-errnos.h>
|
||||
#include <kernel-features.h>
|
||||
#include <stap-probe.h>
|
||||
|
||||
.text
|
||||
|
||||
.globl __pthread_rwlock_rdlock
|
||||
.type __pthread_rwlock_rdlock,@function
|
||||
.align 16
|
||||
__pthread_rwlock_rdlock:
|
||||
cfi_startproc
|
||||
|
||||
LIBC_PROBE (rdlock_entry, 1, %rdi)
|
||||
|
||||
xorq %r10, %r10
|
||||
|
||||
/* Get the lock. */
|
||||
movl $1, %esi
|
||||
xorl %eax, %eax
|
||||
LOCK
|
||||
#if MUTEX == 0
|
||||
cmpxchgl %esi, (%rdi)
|
||||
#else
|
||||
cmpxchgl %esi, MUTEX(%rdi)
|
||||
#endif
|
||||
jnz 1f
|
||||
|
||||
2: movl WRITER(%rdi), %eax
|
||||
testl %eax, %eax
|
||||
jne 14f
|
||||
cmpl $0, WRITERS_QUEUED(%rdi)
|
||||
je 5f
|
||||
cmpl $0, FLAGS(%rdi)
|
||||
je 5f
|
||||
|
||||
3: incl READERS_QUEUED(%rdi)
|
||||
je 4f
|
||||
|
||||
movl READERS_WAKEUP(%rdi), %edx
|
||||
|
||||
LOCK
|
||||
#if MUTEX == 0
|
||||
decl (%rdi)
|
||||
#else
|
||||
decl MUTEX(%rdi)
|
||||
#endif
|
||||
jne 10f
|
||||
|
||||
11:
|
||||
#ifdef __ASSUME_PRIVATE_FUTEX
|
||||
movl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT, %esi
|
||||
xorl PSHARED(%rdi), %esi
|
||||
#else
|
||||
# if FUTEX_WAIT == 0
|
||||
movl PSHARED(%rdi), %esi
|
||||
# else
|
||||
movl $FUTEX_WAIT, %esi
|
||||
orl PSHARED(%rdi), %esi
|
||||
# endif
|
||||
xorl %fs:PRIVATE_FUTEX, %esi
|
||||
#endif
|
||||
addq $READERS_WAKEUP, %rdi
|
||||
movl $SYS_futex, %eax
|
||||
syscall
|
||||
|
||||
subq $READERS_WAKEUP, %rdi
|
||||
|
||||
/* Reget the lock. */
|
||||
movl $1, %esi
|
||||
xorl %eax, %eax
|
||||
LOCK
|
||||
#if MUTEX == 0
|
||||
cmpxchgl %esi, (%rdi)
|
||||
#else
|
||||
cmpxchgl %esi, MUTEX(%rdi)
|
||||
#endif
|
||||
jnz 12f
|
||||
|
||||
13: decl READERS_QUEUED(%rdi)
|
||||
jmp 2b
|
||||
|
||||
5: xorl %edx, %edx
|
||||
incl NR_READERS(%rdi)
|
||||
je 8f
|
||||
9: LOCK
|
||||
#if MUTEX == 0
|
||||
decl (%rdi)
|
||||
#else
|
||||
decl MUTEX(%rdi)
|
||||
#endif
|
||||
jne 6f
|
||||
7:
|
||||
|
||||
movq %rdx, %rax
|
||||
retq
|
||||
|
||||
1: movl PSHARED(%rdi), %esi
|
||||
#if MUTEX != 0
|
||||
addq $MUTEX, %rdi
|
||||
#endif
|
||||
callq __lll_lock_wait
|
||||
#if MUTEX != 0
|
||||
subq $MUTEX, %rdi
|
||||
#endif
|
||||
jmp 2b
|
||||
|
||||
14: cmpl %fs:TID, %eax
|
||||
jne 3b
|
||||
/* Deadlock detected. */
|
||||
movl $EDEADLK, %edx
|
||||
jmp 9b
|
||||
|
||||
6: movl PSHARED(%rdi), %esi
|
||||
#if MUTEX != 0
|
||||
addq $MUTEX, %rdi
|
||||
#endif
|
||||
callq __lll_unlock_wake
|
||||
#if MUTEX != 0
|
||||
subq $MUTEX, %rdi
|
||||
#endif
|
||||
jmp 7b
|
||||
|
||||
/* Overflow. */
|
||||
8: decl NR_READERS(%rdi)
|
||||
movl $EAGAIN, %edx
|
||||
jmp 9b
|
||||
|
||||
/* Overflow. */
|
||||
4: decl READERS_QUEUED(%rdi)
|
||||
movl $EAGAIN, %edx
|
||||
jmp 9b
|
||||
|
||||
10: movl PSHARED(%rdi), %esi
|
||||
#if MUTEX != 0
|
||||
addq $MUTEX, %rdi
|
||||
#endif
|
||||
callq __lll_unlock_wake
|
||||
#if MUTEX != 0
|
||||
subq $MUTEX, %rdi
|
||||
#endif
|
||||
jmp 11b
|
||||
|
||||
12: movl PSHARED(%rdi), %esi
|
||||
#if MUTEX == 0
|
||||
addq $MUTEX, %rdi
|
||||
#endif
|
||||
callq __lll_lock_wait
|
||||
#if MUTEX != 0
|
||||
subq $MUTEX, %rdi
|
||||
#endif
|
||||
jmp 13b
|
||||
cfi_endproc
|
||||
.size __pthread_rwlock_rdlock,.-__pthread_rwlock_rdlock
|
||||
|
||||
strong_alias (__pthread_rwlock_rdlock, pthread_rwlock_rdlock)
|
||||
hidden_def (__pthread_rwlock_rdlock)
|
||||
@ -1,274 +0,0 @@
|
||||
/* Copyright (C) 2002-2014 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, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <sysdep.h>
|
||||
#include <lowlevellock.h>
|
||||
#include <lowlevelrwlock.h>
|
||||
#include <pthread-errnos.h>
|
||||
#include <kernel-features.h>
|
||||
|
||||
.text
|
||||
|
||||
.globl pthread_rwlock_timedrdlock
|
||||
.type pthread_rwlock_timedrdlock,@function
|
||||
.align 16
|
||||
pthread_rwlock_timedrdlock:
|
||||
cfi_startproc
|
||||
pushq %r12
|
||||
cfi_adjust_cfa_offset(8)
|
||||
cfi_rel_offset(%r12, 0)
|
||||
pushq %r13
|
||||
cfi_adjust_cfa_offset(8)
|
||||
cfi_rel_offset(%r13, 0)
|
||||
#ifdef __ASSUME_FUTEX_CLOCK_REALTIME
|
||||
# define VALREG %edx
|
||||
#else
|
||||
pushq %r14
|
||||
cfi_adjust_cfa_offset(8)
|
||||
cfi_rel_offset(%r14, 0)
|
||||
|
||||
subq $16, %rsp
|
||||
cfi_adjust_cfa_offset(16)
|
||||
# define VALREG %r14d
|
||||
#endif
|
||||
|
||||
movq %rdi, %r12
|
||||
movq %rsi, %r13
|
||||
|
||||
/* Get the lock. */
|
||||
movl $1, %esi
|
||||
xorl %eax, %eax
|
||||
LOCK
|
||||
#if MUTEX == 0
|
||||
cmpxchgl %esi, (%rdi)
|
||||
#else
|
||||
cmpxchgl %esi, MUTEX(%rdi)
|
||||
#endif
|
||||
jnz 1f
|
||||
|
||||
2: movl WRITER(%r12), %eax
|
||||
testl %eax, %eax
|
||||
jne 14f
|
||||
cmpl $0, WRITERS_QUEUED(%r12)
|
||||
je 5f
|
||||
cmpl $0, FLAGS(%r12)
|
||||
je 5f
|
||||
|
||||
/* Check the value of the timeout parameter. */
|
||||
3: cmpq $1000000000, 8(%r13)
|
||||
jae 19f
|
||||
|
||||
incl READERS_QUEUED(%r12)
|
||||
je 4f
|
||||
|
||||
movl READERS_WAKEUP(%r12), VALREG
|
||||
|
||||
/* Unlock. */
|
||||
LOCK
|
||||
#if MUTEX == 0
|
||||
decl (%r12)
|
||||
#else
|
||||
decl MUTEX(%r12)
|
||||
#endif
|
||||
jne 10f
|
||||
|
||||
11:
|
||||
#ifndef __ASSUME_FUTEX_CLOCK_REALTIME
|
||||
# ifdef PIC
|
||||
cmpl $0, __have_futex_clock_realtime(%rip)
|
||||
# else
|
||||
cmpl $0, __have_futex_clock_realtime
|
||||
# endif
|
||||
je .Lreltmo
|
||||
#endif
|
||||
|
||||
cmpq $0, (%r13)
|
||||
js 16f /* Time is already up. */
|
||||
|
||||
movl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT_BITSET|FUTEX_CLOCK_REALTIME, %esi
|
||||
xorl PSHARED(%r12), %esi
|
||||
movq %r13, %r10
|
||||
movl $0xffffffff, %r9d
|
||||
#ifndef __ASSUME_FUTEX_CLOCK_REALTIME
|
||||
movl %r14d, %edx
|
||||
#endif
|
||||
21: leaq READERS_WAKEUP(%r12), %rdi
|
||||
movl $SYS_futex, %eax
|
||||
syscall
|
||||
movq %rax, %rdx
|
||||
|
||||
#ifndef __ASSUME_FUTEX_CLOCK_REALTIME
|
||||
.subsection 2
|
||||
.Lreltmo:
|
||||
/* Get current time. */
|
||||
movq %rsp, %rdi
|
||||
xorl %esi, %esi
|
||||
/* This call works because we directly jump to a system call entry
|
||||
which preserves all the registers. */
|
||||
call JUMPTARGET(__gettimeofday)
|
||||
|
||||
/* Compute relative timeout. */
|
||||
movq 8(%rsp), %rax
|
||||
movl $1000, %edi
|
||||
mul %rdi /* Milli seconds to nano seconds. */
|
||||
movq (%r13), %rcx
|
||||
movq 8(%r13), %rdi
|
||||
subq (%rsp), %rcx
|
||||
subq %rax, %rdi
|
||||
jns 15f
|
||||
addq $1000000000, %rdi
|
||||
decq %rcx
|
||||
15: testq %rcx, %rcx
|
||||
js 16f /* Time is already up. */
|
||||
|
||||
/* Futex call. */
|
||||
movq %rcx, (%rsp) /* Store relative timeout. */
|
||||
movq %rdi, 8(%rsp)
|
||||
|
||||
# ifdef __ASSUME_PRIVATE_FUTEX
|
||||
movl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT, %esi
|
||||
xorl PSHARED(%r12), %esi
|
||||
# else
|
||||
# if FUTEX_WAIT == 0
|
||||
movl PSHARED(%r12), %esi
|
||||
# else
|
||||
movl $FUTEX_WAIT, %esi
|
||||
orl PSHARED(%r12), %esi
|
||||
# endif
|
||||
xorl %fs:PRIVATE_FUTEX, %esi
|
||||
# endif
|
||||
movq %rsp, %r10
|
||||
movl %r14d, %edx
|
||||
|
||||
jmp 21b
|
||||
.previous
|
||||
#endif
|
||||
|
||||
17: /* Reget the lock. */
|
||||
movl $1, %esi
|
||||
xorl %eax, %eax
|
||||
LOCK
|
||||
#if MUTEX == 0
|
||||
cmpxchgl %esi, (%r12)
|
||||
#else
|
||||
cmpxchgl %esi, MUTEX(%r12)
|
||||
#endif
|
||||
jnz 12f
|
||||
|
||||
13: decl READERS_QUEUED(%r12)
|
||||
cmpq $-ETIMEDOUT, %rdx
|
||||
jne 2b
|
||||
|
||||
18: movl $ETIMEDOUT, %edx
|
||||
jmp 9f
|
||||
|
||||
|
||||
5: xorl %edx, %edx
|
||||
incl NR_READERS(%r12)
|
||||
je 8f
|
||||
9: LOCK
|
||||
#if MUTEX == 0
|
||||
decl (%r12)
|
||||
#else
|
||||
decl MUTEX(%r12)
|
||||
#endif
|
||||
jne 6f
|
||||
|
||||
7: movq %rdx, %rax
|
||||
|
||||
#ifndef __ASSUME_FUTEX_CLOCK_REALTIME
|
||||
addq $16, %rsp
|
||||
cfi_adjust_cfa_offset(-16)
|
||||
popq %r14
|
||||
cfi_adjust_cfa_offset(-8)
|
||||
cfi_restore(%r14)
|
||||
#endif
|
||||
popq %r13
|
||||
cfi_adjust_cfa_offset(-8)
|
||||
cfi_restore(%r13)
|
||||
popq %r12
|
||||
cfi_adjust_cfa_offset(-8)
|
||||
cfi_restore(%r12)
|
||||
retq
|
||||
|
||||
#ifdef __ASSUME_PRIVATE_FUTEX
|
||||
cfi_adjust_cfa_offset(16)
|
||||
cfi_rel_offset(%r12, 8)
|
||||
cfi_rel_offset(%r13, 0)
|
||||
#else
|
||||
cfi_adjust_cfa_offset(40)
|
||||
cfi_offset(%r12, -16)
|
||||
cfi_offset(%r13, -24)
|
||||
cfi_offset(%r14, -32)
|
||||
#endif
|
||||
1: movl PSHARED(%rdi), %esi
|
||||
#if MUTEX != 0
|
||||
addq $MUTEX, %rdi
|
||||
#endif
|
||||
callq __lll_lock_wait
|
||||
jmp 2b
|
||||
|
||||
14: cmpl %fs:TID, %eax
|
||||
jne 3b
|
||||
movl $EDEADLK, %edx
|
||||
jmp 9b
|
||||
|
||||
6: movl PSHARED(%r12), %esi
|
||||
#if MUTEX == 0
|
||||
movq %r12, %rdi
|
||||
#else
|
||||
leal MUTEX(%r12), %rdi
|
||||
#endif
|
||||
callq __lll_unlock_wake
|
||||
jmp 7b
|
||||
|
||||
/* Overflow. */
|
||||
8: decl NR_READERS(%r12)
|
||||
movl $EAGAIN, %edx
|
||||
jmp 9b
|
||||
|
||||
/* Overflow. */
|
||||
4: decl READERS_QUEUED(%r12)
|
||||
movl $EAGAIN, %edx
|
||||
jmp 9b
|
||||
|
||||
10: movl PSHARED(%r12), %esi
|
||||
#if MUTEX == 0
|
||||
movq %r12, %rdi
|
||||
#else
|
||||
leaq MUTEX(%r12), %rdi
|
||||
#endif
|
||||
callq __lll_unlock_wake
|
||||
jmp 11b
|
||||
|
||||
12: movl PSHARED(%r12), %esi
|
||||
#if MUTEX == 0
|
||||
movq %r12, %rdi
|
||||
#else
|
||||
leaq MUTEX(%r12), %rdi
|
||||
#endif
|
||||
callq __lll_lock_wait
|
||||
jmp 13b
|
||||
|
||||
16: movq $-ETIMEDOUT, %rdx
|
||||
jmp 17b
|
||||
|
||||
19: movl $EINVAL, %edx
|
||||
jmp 9b
|
||||
cfi_endproc
|
||||
.size pthread_rwlock_timedrdlock,.-pthread_rwlock_timedrdlock
|
||||
@ -1,266 +0,0 @@
|
||||
/* Copyright (C) 2002-2014 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, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <sysdep.h>
|
||||
#include <lowlevellock.h>
|
||||
#include <lowlevelrwlock.h>
|
||||
#include <pthread-errnos.h>
|
||||
#include <kernel-features.h>
|
||||
|
||||
.text
|
||||
|
||||
.globl pthread_rwlock_timedwrlock
|
||||
.type pthread_rwlock_timedwrlock,@function
|
||||
.align 16
|
||||
pthread_rwlock_timedwrlock:
|
||||
cfi_startproc
|
||||
pushq %r12
|
||||
cfi_adjust_cfa_offset(8)
|
||||
cfi_rel_offset(%r12, 0)
|
||||
pushq %r13
|
||||
cfi_adjust_cfa_offset(8)
|
||||
cfi_rel_offset(%r13, 0)
|
||||
#ifdef __ASSUME_FUTEX_CLOCK_REALTIME
|
||||
# define VALREG %edx
|
||||
#else
|
||||
pushq %r14
|
||||
cfi_adjust_cfa_offset(8)
|
||||
cfi_rel_offset(%r14, 0)
|
||||
|
||||
subq $16, %rsp
|
||||
cfi_adjust_cfa_offset(16)
|
||||
# define VALREG %r14d
|
||||
#endif
|
||||
|
||||
movq %rdi, %r12
|
||||
movq %rsi, %r13
|
||||
|
||||
/* Get the lock. */
|
||||
movl $1, %esi
|
||||
xorl %eax, %eax
|
||||
LOCK
|
||||
#if MUTEX == 0
|
||||
cmpxchgl %esi, (%rdi)
|
||||
#else
|
||||
cmpxchgl %esi, MUTEX(%rdi)
|
||||
#endif
|
||||
jnz 1f
|
||||
|
||||
2: movl WRITER(%r12), %eax
|
||||
testl %eax, %eax
|
||||
jne 14f
|
||||
cmpl $0, NR_READERS(%r12)
|
||||
je 5f
|
||||
|
||||
/* Check the value of the timeout parameter. */
|
||||
3: cmpq $1000000000, 8(%r13)
|
||||
jae 19f
|
||||
|
||||
incl WRITERS_QUEUED(%r12)
|
||||
je 4f
|
||||
|
||||
movl WRITERS_WAKEUP(%r12), VALREG
|
||||
|
||||
LOCK
|
||||
#if MUTEX == 0
|
||||
decl (%r12)
|
||||
#else
|
||||
decl MUTEX(%r12)
|
||||
#endif
|
||||
jne 10f
|
||||
|
||||
11:
|
||||
#ifndef __ASSUME_FUTEX_CLOCK_REALTIME
|
||||
# ifdef PIC
|
||||
cmpl $0, __have_futex_clock_realtime(%rip)
|
||||
# else
|
||||
cmpl $0, __have_futex_clock_realtime
|
||||
# endif
|
||||
je .Lreltmo
|
||||
#endif
|
||||
|
||||
cmpq $0, (%r13)
|
||||
js 16f /* Time is already up. */
|
||||
|
||||
movl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT_BITSET|FUTEX_CLOCK_REALTIME, %esi
|
||||
xorl PSHARED(%r12), %esi
|
||||
movq %r13, %r10
|
||||
movl $0xffffffff, %r9d
|
||||
#ifndef __ASSUME_FUTEX_CLOCK_REALTIME
|
||||
movl %r14d, %edx
|
||||
#endif
|
||||
21: leaq WRITERS_WAKEUP(%r12), %rdi
|
||||
movl $SYS_futex, %eax
|
||||
syscall
|
||||
movq %rax, %rdx
|
||||
|
||||
#ifndef __ASSUME_FUTEX_CLOCK_REALTIME
|
||||
.subsection 2
|
||||
.Lreltmo:
|
||||
/* Get current time. */
|
||||
movq %rsp, %rdi
|
||||
xorl %esi, %esi
|
||||
/* This call works because we directly jump to a system call entry
|
||||
which preserves all the registers. */
|
||||
call JUMPTARGET(__gettimeofday)
|
||||
|
||||
/* Compute relative timeout. */
|
||||
movq 8(%rsp), %rax
|
||||
movl $1000, %edi
|
||||
mul %rdi /* Milli seconds to nano seconds. */
|
||||
movq (%r13), %rcx
|
||||
movq 8(%r13), %rdi
|
||||
subq (%rsp), %rcx
|
||||
subq %rax, %rdi
|
||||
jns 15f
|
||||
addq $1000000000, %rdi
|
||||
decq %rcx
|
||||
15: testq %rcx, %rcx
|
||||
js 16f /* Time is already up. */
|
||||
|
||||
/* Futex call. */
|
||||
movq %rcx, (%rsp) /* Store relative timeout. */
|
||||
movq %rdi, 8(%rsp)
|
||||
|
||||
# ifdef __ASSUME_PRIVATE_FUTEX
|
||||
movl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT, %esi
|
||||
xorl PSHARED(%r12), %esi
|
||||
# else
|
||||
# if FUTEX_WAIT == 0
|
||||
movl PSHARED(%r12), %esi
|
||||
# else
|
||||
movl $FUTEX_WAIT, %esi
|
||||
orl PSHARED(%r12), %esi
|
||||
# endif
|
||||
xorl %fs:PRIVATE_FUTEX, %esi
|
||||
# endif
|
||||
movq %rsp, %r10
|
||||
movl %r14d, %edx
|
||||
|
||||
jmp 21b
|
||||
.previous
|
||||
#endif
|
||||
|
||||
17: /* Reget the lock. */
|
||||
movl $1, %esi
|
||||
xorl %eax, %eax
|
||||
LOCK
|
||||
#if MUTEX == 0
|
||||
cmpxchgl %esi, (%r12)
|
||||
#else
|
||||
cmpxchgl %esi, MUTEX(%r12)
|
||||
#endif
|
||||
jnz 12f
|
||||
|
||||
13: decl WRITERS_QUEUED(%r12)
|
||||
cmpq $-ETIMEDOUT, %rdx
|
||||
jne 2b
|
||||
|
||||
18: movl $ETIMEDOUT, %edx
|
||||
jmp 9f
|
||||
|
||||
|
||||
5: xorl %edx, %edx
|
||||
movl %fs:TID, %eax
|
||||
movl %eax, WRITER(%r12)
|
||||
9: LOCK
|
||||
#if MUTEX == 0
|
||||
decl (%r12)
|
||||
#else
|
||||
decl MUTEX(%r12)
|
||||
#endif
|
||||
jne 6f
|
||||
|
||||
7: movq %rdx, %rax
|
||||
|
||||
#ifndef __ASSUME_FUTEX_CLOCK_REALTIME
|
||||
addq $16, %rsp
|
||||
cfi_adjust_cfa_offset(-16)
|
||||
popq %r14
|
||||
cfi_adjust_cfa_offset(-8)
|
||||
cfi_restore(%r14)
|
||||
#endif
|
||||
popq %r13
|
||||
cfi_adjust_cfa_offset(-8)
|
||||
cfi_restore(%r13)
|
||||
popq %r12
|
||||
cfi_adjust_cfa_offset(-8)
|
||||
cfi_restore(%r12)
|
||||
retq
|
||||
|
||||
#ifdef __ASSUME_PRIVATE_FUTEX
|
||||
cfi_adjust_cfa_offset(16)
|
||||
cfi_rel_offset(%r12, 8)
|
||||
cfi_rel_offset(%r13, 0)
|
||||
#else
|
||||
cfi_adjust_cfa_offset(40)
|
||||
cfi_offset(%r12, -16)
|
||||
cfi_offset(%r13, -24)
|
||||
cfi_offset(%r14, -32)
|
||||
#endif
|
||||
1: movl PSHARED(%rdi), %esi
|
||||
#if MUTEX != 0
|
||||
addq $MUTEX, %rdi
|
||||
#endif
|
||||
callq __lll_lock_wait
|
||||
jmp 2b
|
||||
|
||||
14: cmpl %fs:TID, %eax
|
||||
jne 3b
|
||||
20: movl $EDEADLK, %edx
|
||||
jmp 9b
|
||||
|
||||
6: movl PSHARED(%r12), %esi
|
||||
#if MUTEX == 0
|
||||
movq %r12, %rdi
|
||||
#else
|
||||
leal MUTEX(%r12), %rdi
|
||||
#endif
|
||||
callq __lll_unlock_wake
|
||||
jmp 7b
|
||||
|
||||
/* Overflow. */
|
||||
4: decl WRITERS_QUEUED(%r12)
|
||||
movl $EAGAIN, %edx
|
||||
jmp 9b
|
||||
|
||||
10: movl PSHARED(%r12), %esi
|
||||
#if MUTEX == 0
|
||||
movq %r12, %rdi
|
||||
#else
|
||||
leaq MUTEX(%r12), %rdi
|
||||
#endif
|
||||
callq __lll_unlock_wake
|
||||
jmp 11b
|
||||
|
||||
12: movl PSHARED(%r12), %esi
|
||||
#if MUTEX == 0
|
||||
movq %r12, %rdi
|
||||
#else
|
||||
leaq MUTEX(%r12), %rdi
|
||||
#endif
|
||||
callq __lll_lock_wait
|
||||
jmp 13b
|
||||
|
||||
16: movq $-ETIMEDOUT, %rdx
|
||||
jmp 17b
|
||||
|
||||
19: movl $EINVAL, %edx
|
||||
jmp 9b
|
||||
cfi_endproc
|
||||
.size pthread_rwlock_timedwrlock,.-pthread_rwlock_timedwrlock
|
||||
@ -1,126 +0,0 @@
|
||||
/* Copyright (C) 2002-2014 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, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <sysdep.h>
|
||||
#include <lowlevellock.h>
|
||||
#include <lowlevelrwlock.h>
|
||||
#include <kernel-features.h>
|
||||
|
||||
|
||||
.text
|
||||
|
||||
.globl __pthread_rwlock_unlock
|
||||
.type __pthread_rwlock_unlock,@function
|
||||
.align 16
|
||||
__pthread_rwlock_unlock:
|
||||
cfi_startproc
|
||||
/* Get the lock. */
|
||||
movl $1, %esi
|
||||
xorl %eax, %eax
|
||||
LOCK
|
||||
#if MUTEX == 0
|
||||
cmpxchgl %esi, (%rdi)
|
||||
#else
|
||||
cmpxchgl %esi, MUTEX(%rdi)
|
||||
#endif
|
||||
jnz 1f
|
||||
|
||||
2: cmpl $0, WRITER(%rdi)
|
||||
jne 5f
|
||||
decl NR_READERS(%rdi)
|
||||
jnz 6f
|
||||
|
||||
5: movl $0, WRITER(%rdi)
|
||||
|
||||
movl $1, %edx
|
||||
leaq WRITERS_WAKEUP(%rdi), %r10
|
||||
cmpl $0, WRITERS_QUEUED(%rdi)
|
||||
jne 0f
|
||||
|
||||
/* If also no readers waiting nothing to do. */
|
||||
cmpl $0, READERS_QUEUED(%rdi)
|
||||
je 6f
|
||||
|
||||
movl $0x7fffffff, %edx
|
||||
leaq READERS_WAKEUP(%rdi), %r10
|
||||
|
||||
0: incl (%r10)
|
||||
LOCK
|
||||
#if MUTEX == 0
|
||||
decl (%rdi)
|
||||
#else
|
||||
decl MUTEX(%rdi)
|
||||
#endif
|
||||
jne 7f
|
||||
|
||||
8:
|
||||
#ifdef __ASSUME_PRIVATE_FUTEX
|
||||
movl $FUTEX_PRIVATE_FLAG|FUTEX_WAKE, %esi
|
||||
xorl PSHARED(%rdi), %esi
|
||||
#else
|
||||
movl $FUTEX_WAKE, %esi
|
||||
orl PSHARED(%rdi), %esi
|
||||
xorl %fs:PRIVATE_FUTEX, %esi
|
||||
#endif
|
||||
movl $SYS_futex, %eax
|
||||
movq %r10, %rdi
|
||||
syscall
|
||||
|
||||
xorl %eax, %eax
|
||||
retq
|
||||
|
||||
.align 16
|
||||
6: LOCK
|
||||
#if MUTEX == 0
|
||||
decl (%rdi)
|
||||
#else
|
||||
decl MUTEX(%rdi)
|
||||
#endif
|
||||
jne 3f
|
||||
|
||||
4: xorl %eax, %eax
|
||||
retq
|
||||
|
||||
1: movl PSHARED(%rdi), %esi
|
||||
#if MUTEX != 0
|
||||
addq $MUTEX, %rdi
|
||||
#endif
|
||||
callq __lll_lock_wait
|
||||
#if MUTEX != 0
|
||||
subq $MUTEX, %rdi
|
||||
#endif
|
||||
jmp 2b
|
||||
|
||||
3: movl PSHARED(%rdi), %esi
|
||||
#if MUTEX != 0
|
||||
addq $MUTEX, %rdi
|
||||
#endif
|
||||
callq __lll_unlock_wake
|
||||
jmp 4b
|
||||
|
||||
7: movl PSHARED(%rdi), %esi
|
||||
#if MUTEX != 0
|
||||
addq $MUTEX, %rdi
|
||||
#endif
|
||||
callq __lll_unlock_wake
|
||||
jmp 8b
|
||||
cfi_endproc
|
||||
.size __pthread_rwlock_unlock,.-__pthread_rwlock_unlock
|
||||
|
||||
strong_alias (__pthread_rwlock_unlock, pthread_rwlock_unlock)
|
||||
hidden_def (__pthread_rwlock_unlock)
|
||||
@ -1,165 +0,0 @@
|
||||
/* Copyright (C) 2002-2014 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, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <sysdep.h>
|
||||
#include <lowlevellock.h>
|
||||
#include <lowlevelrwlock.h>
|
||||
#include <pthread-errnos.h>
|
||||
#include <kernel-features.h>
|
||||
#include <stap-probe.h>
|
||||
|
||||
.text
|
||||
|
||||
.globl __pthread_rwlock_wrlock
|
||||
.type __pthread_rwlock_wrlock,@function
|
||||
.align 16
|
||||
__pthread_rwlock_wrlock:
|
||||
cfi_startproc
|
||||
|
||||
LIBC_PROBE (wrlock_entry, 1, %rdi)
|
||||
|
||||
xorq %r10, %r10
|
||||
|
||||
/* Get the lock. */
|
||||
movl $1, %esi
|
||||
xorl %eax, %eax
|
||||
LOCK
|
||||
#if MUTEX == 0
|
||||
cmpxchgl %esi, (%rdi)
|
||||
#else
|
||||
cmpxchgl %esi, MUTEX(%rdi)
|
||||
#endif
|
||||
jnz 1f
|
||||
|
||||
2: movl WRITER(%rdi), %eax
|
||||
testl %eax, %eax
|
||||
jne 14f
|
||||
cmpl $0, NR_READERS(%rdi)
|
||||
je 5f
|
||||
|
||||
3: incl WRITERS_QUEUED(%rdi)
|
||||
je 4f
|
||||
|
||||
movl WRITERS_WAKEUP(%rdi), %edx
|
||||
|
||||
LOCK
|
||||
#if MUTEX == 0
|
||||
decl (%rdi)
|
||||
#else
|
||||
decl MUTEX(%rdi)
|
||||
#endif
|
||||
jne 10f
|
||||
|
||||
11:
|
||||
#ifdef __ASSUME_PRIVATE_FUTEX
|
||||
movl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT, %esi
|
||||
xorl PSHARED(%rdi), %esi
|
||||
#else
|
||||
# if FUTEX_WAIT == 0
|
||||
movl PSHARED(%rdi), %esi
|
||||
# else
|
||||
movl $FUTEX_WAIT, %esi
|
||||
orl PSHARED(%rdi), %esi
|
||||
# endif
|
||||
xorl %fs:PRIVATE_FUTEX, %esi
|
||||
#endif
|
||||
addq $WRITERS_WAKEUP, %rdi
|
||||
movl $SYS_futex, %eax
|
||||
syscall
|
||||
|
||||
subq $WRITERS_WAKEUP, %rdi
|
||||
|
||||
/* Reget the lock. */
|
||||
movl $1, %esi
|
||||
xorl %eax, %eax
|
||||
LOCK
|
||||
#if MUTEX == 0
|
||||
cmpxchgl %esi, (%rdi)
|
||||
#else
|
||||
cmpxchgl %esi, MUTEX(%rdi)
|
||||
#endif
|
||||
jnz 12f
|
||||
|
||||
13: decl WRITERS_QUEUED(%rdi)
|
||||
jmp 2b
|
||||
|
||||
5: xorl %edx, %edx
|
||||
movl %fs:TID, %eax
|
||||
movl %eax, WRITER(%rdi)
|
||||
9: LOCK
|
||||
#if MUTEX == 0
|
||||
decl (%rdi)
|
||||
#else
|
||||
decl MUTEX(%rdi)
|
||||
#endif
|
||||
jne 6f
|
||||
7:
|
||||
|
||||
movq %rdx, %rax
|
||||
retq
|
||||
|
||||
1: movl PSHARED(%rdi), %esi
|
||||
#if MUTEX != 0
|
||||
addq $MUTEX, %rdi
|
||||
#endif
|
||||
callq __lll_lock_wait
|
||||
#if MUTEX != 0
|
||||
subq $MUTEX, %rdi
|
||||
#endif
|
||||
jmp 2b
|
||||
|
||||
14: cmpl %fs:TID, %eax
|
||||
jne 3b
|
||||
movl $EDEADLK, %edx
|
||||
jmp 9b
|
||||
|
||||
6: movl PSHARED(%rdi), %esi
|
||||
#if MUTEX != 0
|
||||
addq $MUTEX, %rdi
|
||||
#endif
|
||||
callq __lll_unlock_wake
|
||||
jmp 7b
|
||||
|
||||
4: decl WRITERS_QUEUED(%rdi)
|
||||
movl $EAGAIN, %edx
|
||||
jmp 9b
|
||||
|
||||
10: movl PSHARED(%rdi), %esi
|
||||
#if MUTEX != 0
|
||||
addq $MUTEX, %rdi
|
||||
#endif
|
||||
callq __lll_unlock_wake
|
||||
#if MUTEX != 0
|
||||
subq $MUTEX, %rdi
|
||||
#endif
|
||||
jmp 11b
|
||||
|
||||
12: movl PSHARED(%rdi), %esi
|
||||
#if MUTEX != 0
|
||||
addq $MUTEX, %rdi
|
||||
#endif
|
||||
callq __lll_lock_wait
|
||||
#if MUTEX != 0
|
||||
subq $MUTEX, %rdi
|
||||
#endif
|
||||
jmp 13b
|
||||
cfi_endproc
|
||||
.size __pthread_rwlock_wrlock,.-__pthread_rwlock_wrlock
|
||||
|
||||
strong_alias (__pthread_rwlock_wrlock, pthread_rwlock_wrlock)
|
||||
hidden_def (__pthread_rwlock_wrlock)
|
||||
Loading…
Reference in New Issue
Block a user