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