Update.
* sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_rdlock.S: New file. * sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_wrlock.S: New file. * sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_unlock.S: New file.
This commit is contained in:
Ulrich Drepper
parent
35e148cb96
commit
da49194d2d
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@ -1,5 +1,9 @@
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2003-03-12 Ulrich Drepper <drepper@redhat.com>
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* sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_rdlock.S: New file.
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* sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_wrlock.S: New file.
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* sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_unlock.S: New file.
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* sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedwrlock.S
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(__pthread_rwlock_timedwrlock): Add missing opcode suffix.
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* sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedrdlock.S
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@ -0,0 +1,175 @@
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/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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#include <lowlevelrwlock.h>
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#define SYS_futex 202
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#define FUTEX_WAIT 0
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#define FUTEX_WAKE 1
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#define EAGAIN 11
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#define EDEADLK 35
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#ifndef UP
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# define LOCK lock
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#else
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# define LOCK
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#endif
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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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xorq %r10, %r10
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/* Get the lock. */
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movl $1, %esi
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LOCK
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#if MUTEX == 0
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xaddl %esi, (%rdi)
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#else
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xaddl %esi, MUTEX(%rdi)
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#endif
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testl %esi, %esi
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jne 1f
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2: movq WRITER(%rdi), %rax
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testq %rax, %rax
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jne 14f
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cmpl $0, WRITERS_QUEUED(%rdi)
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je 5f
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cmpl $0, FLAGS(%rdi)
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je 5f
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3: incl READERS_QUEUED(%rdi)
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je 4f
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movl READERS_WAKEUP(%rdi), %edx
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LOCK
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#if MUTEX == 0
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incl (%rdi)
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#else
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incl MUTEX(%rdi)
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#endif
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jne 10f
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11: addq $READERS_WAKEUP-MUTEX, %rdi
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movq %r10, %rsi /* movl $FUTEX_WAIT, %ecx */
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movq $SYS_futex, %rax
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syscall
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subq $READERS_WAKEUP-MUTEX, %rdi
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/* Reget the lock. */
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movl $1, %esi
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LOCK
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#if MUTEX == 0
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xaddl %esi, (%rdi)
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#else
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xaddl %esi, MUTEX(%rdi)
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#endif
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testl %esi, %esi
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jne 12f
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13: decl READERS_QUEUED(%rdi)
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jmp 2b
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5: xorq %rcx, %rcx
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incl NR_READERS(%rdi)
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je 8f
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9: LOCK
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#if MUTEX == 0
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decl (%rdi)
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#else
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decl MUTEX(%rdi)
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#endif
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jne 6f
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7:
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movq %rcx, %rax
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retq
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1:
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#if MUTEX != 0
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addq $MUTEX, %rdi
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#endif
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call __lll_mutex_lock_wait
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#if MUTEX != 0
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subq $MUTEX, %rdi
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#endif
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jmp 2b
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14: cmpq %gs:16, %rax
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jne 3b
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/* Deadlock detected. */
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movq $EDEADLK, %rcx
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jmp 9b
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6:
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#if MUTEX != 0
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addq $MUTEX, %rdi
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#endif
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call __lll_mutex_unlock_wake
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#if MUTEX != 0
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subq $MUTEX, %rdi
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#endif
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jmp 7b
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/* Overflow. */
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8: decl NR_READERS(%rdi)
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movq $EAGAIN, %rcx
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jmp 9b
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/* Overflow. */
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4: decl READERS_QUEUED(%rdi)
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movq $EAGAIN, %rcx
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jmp 9b
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10:
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#if MUTEX != 0
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addq $MUTEX, %rdi
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#endif
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call __lll_mutex_unlock_wake
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#if MUTEX != 0
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subq $MUTEX, %rdi
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#endif
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jmp 11b
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12:
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#if MUTEX == 0
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addq $MUTEX, %rdi
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#endif
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call __lll_mutex_lock_wait
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#if MUTEX != 0
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subq $MUTEX, %rdi
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#endif
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jmp 13b
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.size __pthread_rwlock_rdlock,.-__pthread_rwlock_rdlock
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.globl pthread_rwlock_rdlock
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pthread_rwlock_rdlock = __pthread_rwlock_rdlock
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.globl __pthread_rwlock_rdlock_internal
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__pthread_rwlock_rdlock_internal = __pthread_rwlock_rdlock
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@ -0,0 +1,136 @@
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/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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#include <lowlevelrwlock.h>
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#define SYS_futex 240
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#define FUTEX_WAIT 0
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#define FUTEX_WAKE 1
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#ifndef UP
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# define LOCK lock
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#else
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# define LOCK
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#endif
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.text
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.globl __pthread_rwlock_unlock
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.type __pthread_rwlock_unlock,@function
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.align 16
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__pthread_rwlock_unlock:
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/* Get the lock. */
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movl $1, %esi
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LOCK
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#if MUTEX == 0
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xaddl %esi, (%rdi)
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#else
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xaddl %esi, MUTEX(%rdi)
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#endif
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testl %esi, %esi
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jne 1f
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2: cmpq $0, WRITER(%rdi)
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jne 5f
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decl NR_READERS(%rdi)
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jnz 6f
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5: movq $0, WRITER(%rdi)
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movq $1, %rsi
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leaq WRITERS_WAKEUP(%rdi), %r11
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movq %rsi, %rdx
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cmpl $0, WRITERS_QUEUED(%rdi)
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jne 0f
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/* If also no readers waiting nothing to do. */
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cmpl $0, READERS_QUEUED(%rdi)
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je 6f
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movq $0x7fffffff, %rdx
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leaq READERS_WAKEUP(%rdi), %r11
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0: incl (%r11)
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LOCK
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#if MUTEX == 0
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decl (%rdi)
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#else
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decl MUTEX(%rdi)
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#endif
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jne 7f
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8: movq $SYS_futex, %rax
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movq %r11, %rdi
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syscall
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xorq %rax, %rax
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retq
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.align 16
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6: LOCK
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#if MUTEX == 0
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decl (%rdi)
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#else
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decl MUTEX(%rdi)
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#endif
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jne 3f
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4: xorq %rax, %rax
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retq
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1:
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#if MUTEX != 0
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addq $MUTEX, %rdi
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#endif
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call __lll_mutex_lock_wait
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#if MUTEX != 0
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subq $MUTEX, %rdi
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#endif
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jmp 2b
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3:
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#if MUTEX != 0
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addq $MUTEX, %rdi
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#endif
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call __lll_mutex_unlock_wake
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#if MUTEX != 0
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subq $MUTEX, %rdi
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#endif
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jmp 4b
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7:
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#if MUTEX != 0
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addq $MUTEX, %rdi
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#endif
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call __lll_mutex_unlock_wake
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#if MUTEX != 0
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subq $MUTEX, %rdi
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#endif
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jmp 8b
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.size __pthread_rwlock_unlock,.-__pthread_rwlock_unlock
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.globl pthread_rwlock_unlock
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pthread_rwlock_unlock = __pthread_rwlock_unlock
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.globl __pthread_rwlock_unlock_internal
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__pthread_rwlock_unlock_internal = __pthread_rwlock_unlock
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@ -0,0 +1,163 @@
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/* Copyright (C) 2002, 2003 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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||||
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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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|
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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#include <lowlevelrwlock.h>
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#define SYS_futex 202
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#define FUTEX_WAIT 0
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#define FUTEX_WAKE 1
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#define EAGAIN 11
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#define EDEADLK 35
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#ifndef UP
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# define LOCK lock
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#else
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# define LOCK
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#endif
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.text
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.globl __pthread_rwlock_wrlock
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.type __pthread_rwlock_wrlock,@function
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.align 16
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__pthread_rwlock_wrlock:
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xorq %r10, %r10
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/* Get the lock. */
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movl $1, %esi
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LOCK
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#if MUTEX == 0
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xaddl %esi, (%rdi)
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#else
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xaddl %esi, MUTEX(%rdi)
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#endif
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testl %esi, %esi
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jne 1f
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2: movq WRITER(%rdi), %rax
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testq %rax, %rax
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jne 14f
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cmpl $0, NR_READERS(%rdi)
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je 5f
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3: incl WRITERS_QUEUED(%rdi)
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je 4f
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movl WRITERS_WAKEUP(%rdi), %edx
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LOCK
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#if MUTEX == 0
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decl (%rdi)
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#else
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decl MUTEX(%rdi)
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#endif
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jne 10f
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11: addq $WRITERS_WAKEUP-MUTEX, %rdi
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movq %r10, %rsi /* movq $FUTEX_WAIT, %rsi */
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movq $SYS_futex, %rax
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syscall
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subq $WRITERS_WAKEUP-MUTEX, %rdi
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/* Reget the lock. */
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movl $1, %esi
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LOCK
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#if MUTEX == 0
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xaddl %esi, (%rdi)
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#else
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xaddl %esi, MUTEX(%rdi)
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#endif
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testl %esi, %esi
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jne 12f
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13: decl WRITERS_QUEUED(%rdi)
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jmp 2b
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5: xorq %rcx, %rcx
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movq %gs:16, %rax
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movq %rax, WRITER(%rdi)
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9: LOCK
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#if MUTEX == 0
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decl (%rdi)
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#else
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decl $MUTEX(%rdi)
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#endif
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jne 6f
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7:
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movq %rcx, %rax
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retq
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1:
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#if MUTEX != 0
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addq $MUTEX, %rdi
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#endif
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call __lll_mutex_lock_wait
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#if MUTEX != 0
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subq $MUTEX, %rdi
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#endif
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jmp 2b
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14: cmpq %gs:16, %rax
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jne 3b
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movq $EDEADLK, %rcx
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jmp 9b
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6:
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#if MUTEX != 0
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addq $MUTEX, %rdi
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#endif
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call __lll_mutex_unlock_wake
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jmp 7b
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4: decl WRITERS_QUEUED(%rdi)
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movl $EAGAIN, %ecx
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jmp 9b
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10:
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#if MUTEX != 0
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addq $MUTEX, %rdi
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#endif
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call __lll_mutex_unlock_wake
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#if MUTEX != 0
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subq $MUTEX, %rdi
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#endif
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jmp 11b
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12:
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#if MUTEX != 0
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addq $MUTEX, %rdi
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#endif
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call __lll_mutex_lock_wait
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#if MUTEX != 0
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subq $MUTEX, %rdi
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#endif
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jmp 13b
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.size __pthread_rwlock_wrlock,.-__pthread_rwlock_wrlock
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.globl pthread_rwlock_wrlock
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pthread_rwlock_wrlock = __pthread_rwlock_wrlock
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.globl __pthread_rwlock_wrlock_internal
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__pthread_rwlock_wrlock_internal = __pthread_rwlock_wrlock
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