diff options
Diffstat (limited to 'libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486')
17 files changed, 2106 insertions, 620 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/libc-lowlevellock.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/libc-lowlevellock.S index 223b11108..ce8ad27aa 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/libc-lowlevellock.S +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/libc-lowlevellock.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -17,14 +17,4 @@ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ -/* In libc.so we do not unconditionally use the lock prefix. Only if - the application is using threads. */ -#ifndef UP -# define LOCK \ - cmpl $0, %gs:MULTIPLE_THREADS_OFFSET; \ - je,pt 0f; \ - lock; \ -0: -#endif - #include "lowlevellock.S" diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S index 955e119ab..61255a0af 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. +/* Copyright (C) 2002-2004, 2006, 2007, 2009 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -19,34 +19,74 @@ #include <sysdep.h> #include <pthread-errnos.h> +#include <bits/kernel-features.h> +#include <lowlevellock.h> .text -#ifndef LOCK -# ifdef UP -# define LOCK +#ifdef __ASSUME_PRIVATE_FUTEX +# define LOAD_PRIVATE_FUTEX_WAIT(reg) \ + movl $(FUTEX_WAIT | FUTEX_PRIVATE_FLAG), reg +# define LOAD_PRIVATE_FUTEX_WAKE(reg) \ + movl $(FUTEX_WAKE | FUTEX_PRIVATE_FLAG), reg +# define LOAD_FUTEX_WAIT(reg) \ + xorl $(FUTEX_WAIT | FUTEX_PRIVATE_FLAG), reg +# define LOAD_FUTEX_WAIT_ABS(reg) \ + xorl $(FUTEX_WAIT_BITSET | FUTEX_PRIVATE_FLAG | FUTEX_CLOCK_REALTIME), reg +# define LOAD_FUTEX_WAKE(reg) \ + xorl $(FUTEX_WAKE | FUTEX_PRIVATE_FLAG), reg +#else +# if FUTEX_WAIT == 0 +# define LOAD_PRIVATE_FUTEX_WAIT(reg) \ + movl %gs:PRIVATE_FUTEX, reg # else -# define LOCK lock +# define LOAD_PRIVATE_FUTEX_WAIT(reg) \ + movl %gs:PRIVATE_FUTEX, reg ; \ + orl $FUTEX_WAIT, reg # endif +# define LOAD_PRIVATE_FUTEX_WAKE(reg) \ + movl %gs:PRIVATE_FUTEX, reg ; \ + orl $FUTEX_WAKE, reg +# if FUTEX_WAIT == 0 +# define LOAD_FUTEX_WAIT(reg) \ + xorl $FUTEX_PRIVATE_FLAG, reg ; \ + andl %gs:PRIVATE_FUTEX, reg +# else +# define LOAD_FUTEX_WAIT(reg) \ + xorl $FUTEX_PRIVATE_FLAG, reg ; \ + andl %gs:PRIVATE_FUTEX, reg ; \ + orl $FUTEX_WAIT, reg +# endif +# define LOAD_FUTEX_WAIT_ABS(reg) \ + xorl $FUTEX_PRIVATE_FLAG, reg ; \ + andl %gs:PRIVATE_FUTEX, reg ; \ + orl $FUTEX_WAIT_BITSET | FUTEX_CLOCK_REALTIME, reg +# define LOAD_FUTEX_WAKE(reg) \ + xorl $FUTEX_PRIVATE_FLAG, reg ; \ + andl %gs:PRIVATE_FUTEX, reg ; \ + orl $FUTEX_WAKE, reg #endif -#define FUTEX_WAIT 0 -#define FUTEX_WAKE 1 - - - .globl __lll_mutex_lock_wait - .type __lll_mutex_lock_wait,@function - .hidden __lll_mutex_lock_wait + .globl __lll_lock_wait_private + .type __lll_lock_wait_private,@function + .hidden __lll_lock_wait_private .align 16 -__lll_mutex_lock_wait: +__lll_lock_wait_private: + cfi_startproc pushl %edx + cfi_adjust_cfa_offset(4) pushl %ebx + cfi_adjust_cfa_offset(4) pushl %esi + cfi_adjust_cfa_offset(4) + cfi_offset(%edx, -8) + cfi_offset(%ebx, -12) + cfi_offset(%esi, -16) movl $2, %edx movl %ecx, %ebx xorl %esi, %esi /* No timeout. */ - xorl %ecx, %ecx /* movl $FUTEX_WAIT, %ecx */ + LOAD_PRIVATE_FUTEX_WAIT (%ecx) cmpl %edx, %eax /* NB: %edx == 2 */ jne 2f @@ -58,41 +98,162 @@ __lll_mutex_lock_wait: xchgl %eax, (%ebx) /* NB: lock is implied */ testl %eax, %eax - jnz,pn 1b + jnz 1b popl %esi + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) popl %edx + cfi_adjust_cfa_offset(-4) + cfi_restore(%edx) ret - .size __lll_mutex_lock_wait,.-__lll_mutex_lock_wait - + cfi_endproc + .size __lll_lock_wait_private,.-__lll_lock_wait_private #ifdef NOT_IN_libc - .globl __lll_mutex_timedlock_wait - .type __lll_mutex_timedlock_wait,@function - .hidden __lll_mutex_timedlock_wait + .globl __lll_lock_wait + .type __lll_lock_wait,@function + .hidden __lll_lock_wait + .align 16 +__lll_lock_wait: + cfi_startproc + pushl %edx + cfi_adjust_cfa_offset(4) + pushl %ebx + cfi_adjust_cfa_offset(4) + pushl %esi + cfi_adjust_cfa_offset(4) + cfi_offset(%edx, -8) + cfi_offset(%ebx, -12) + cfi_offset(%esi, -16) + + movl %edx, %ebx + movl $2, %edx + xorl %esi, %esi /* No timeout. */ + LOAD_FUTEX_WAIT (%ecx) + + cmpl %edx, %eax /* NB: %edx == 2 */ + jne 2f + +1: movl $SYS_futex, %eax + ENTER_KERNEL + +2: movl %edx, %eax + xchgl %eax, (%ebx) /* NB: lock is implied */ + + testl %eax, %eax + jnz 1b + + popl %esi + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) + popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + popl %edx + cfi_adjust_cfa_offset(-4) + cfi_restore(%edx) + ret + cfi_endproc + .size __lll_lock_wait,.-__lll_lock_wait + + /* %ecx: futex + %esi: flags + %edx: timeout + %eax: futex value + */ + .globl __lll_timedlock_wait + .type __lll_timedlock_wait,@function + .hidden __lll_timedlock_wait .align 16 -__lll_mutex_timedlock_wait: +__lll_timedlock_wait: + cfi_startproc + pushl %ebp + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%ebp, 0) + pushl %ebx + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%ebx, 0) + +# ifndef __ASSUME_FUTEX_CLOCK_REALTIME +# ifdef PIC + LOAD_PIC_REG (bx) + cmpl $0, __have_futex_clock_realtime@GOTOFF(%ebx) +# else + cmpl $0, __have_futex_clock_realtime +# endif + je .Lreltmo +# endif + + movl %ecx, %ebx + movl %esi, %ecx + movl %edx, %esi + movl $0xffffffff, %ebp + LOAD_FUTEX_WAIT_ABS (%ecx) + + movl $2, %edx + cmpl %edx, %eax + jne 2f + +1: movl $SYS_futex, %eax + movl $2, %edx + ENTER_KERNEL + +2: xchgl %edx, (%ebx) /* NB: lock is implied */ + + testl %edx, %edx + jz 3f + + cmpl $-ETIMEDOUT, %eax + je 4f + cmpl $-EINVAL, %eax + jne 1b +4: movl %eax, %edx + negl %edx + +3: movl %edx, %eax +7: popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + popl %ebp + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebp) + ret + +# ifndef __ASSUME_FUTEX_CLOCK_REALTIME +.Lreltmo: /* Check for a valid timeout value. */ cmpl $1000000000, 4(%edx) jae 3f - pushl %edi pushl %esi - pushl %ebx - pushl %ebp + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%esi, 0) + pushl %edi + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%edi, 0) /* Stack frame for the timespec and timeval structs. */ subl $8, %esp + cfi_adjust_cfa_offset(8) movl %ecx, %ebp movl %edx, %edi + movl $2, %edx + xchgl %edx, (%ebp) + + test %edx, %edx + je 6f + 1: /* Get current time. */ movl %esp, %ebx xorl %ecx, %ecx - movl $SYS_gettimeofday, %eax + movl $__NR_gettimeofday, %eax ENTER_KERNEL /* Compute relative timeout. */ @@ -107,116 +268,128 @@ __lll_mutex_timedlock_wait: addl $1000000000, %edx subl $1, %ecx 4: testl %ecx, %ecx - js 5f /* Time is already up. */ + js 2f /* Time is already up. */ /* Store relative timeout. */ movl %ecx, (%esp) movl %edx, 4(%esp) + /* Futex call. */ movl %ebp, %ebx - - movl $1, %eax movl $2, %edx - LOCK - cmpxchgl %edx, (%ebx) - - testl %eax, %eax - je 8f - - /* Futex call. */ movl %esp, %esi - xorl %ecx, %ecx /* movl $FUTEX_WAIT, %ecx */ + movl 16(%esp), %ecx + LOAD_FUTEX_WAIT (%ecx) movl $SYS_futex, %eax ENTER_KERNEL - movl %eax, %ecx -8: /* NB: %edx == 2 */ - xorl %eax, %eax - LOCK - cmpxchgl %edx, (%ebx) + /* NB: %edx == 2 */ + xchgl %edx, (%ebp) - jnz 7f + testl %edx, %edx + je 6f + + cmpl $-ETIMEDOUT, %eax + jne 1b +2: movl $ETIMEDOUT, %edx 6: addl $8, %esp - popl %ebp - popl %ebx - popl %esi + cfi_adjust_cfa_offset(-8) popl %edi - ret - - /* Check whether the time expired. */ -7: cmpl $-ETIMEDOUT, %ecx - je 5f - - /* Make sure the current holder knows we are going to sleep. */ + cfi_adjust_cfa_offset(-4) + cfi_restore(%edi) + popl %esi + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) +7: popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + popl %ebp + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebp) movl %edx, %eax - xchgl %eax, (%ebx) - testl %eax, %eax - jz 6b - jmp 1b - -3: movl $EINVAL, %eax ret -5: movl $ETIMEDOUT, %eax - jmp 6b - .size __lll_mutex_timedlock_wait,.-__lll_mutex_timedlock_wait +3: movl $EINVAL, %edx + jmp 7b +# endif + cfi_endproc + .size __lll_timedlock_wait,.-__lll_timedlock_wait #endif - -#ifdef NOT_IN_libc - .globl lll_unlock_wake_cb - .type lll_unlock_wake_cb,@function - .hidden lll_unlock_wake_cb + .globl __lll_unlock_wake_private + .type __lll_unlock_wake_private,@function + .hidden __lll_unlock_wake_private .align 16 -lll_unlock_wake_cb: +__lll_unlock_wake_private: + cfi_startproc pushl %ebx + cfi_adjust_cfa_offset(4) pushl %ecx + cfi_adjust_cfa_offset(4) pushl %edx + cfi_adjust_cfa_offset(4) + cfi_offset(%ebx, -8) + cfi_offset(%ecx, -12) + cfi_offset(%edx, -16) - movl 20(%esp), %ebx - LOCK - subl $1, (%ebx) - je 1f - - movl $FUTEX_WAKE, %ecx + movl %eax, %ebx + movl $0, (%eax) + LOAD_PRIVATE_FUTEX_WAKE (%ecx) movl $1, %edx /* Wake one thread. */ movl $SYS_futex, %eax - movl $0, (%ebx) ENTER_KERNEL -1: popl %edx + popl %edx + cfi_adjust_cfa_offset(-4) + cfi_restore(%edx) popl %ecx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ecx) popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) ret - .size lll_unlock_wake_cb,.-lll_unlock_wake_cb -#endif - + cfi_endproc + .size __lll_unlock_wake_private,.-__lll_unlock_wake_private - .globl __lll_mutex_unlock_wake - .type __lll_mutex_unlock_wake,@function - .hidden __lll_mutex_unlock_wake +#ifdef NOT_IN_libc + .globl __lll_unlock_wake + .type __lll_unlock_wake,@function + .hidden __lll_unlock_wake .align 16 -__lll_mutex_unlock_wake: +__lll_unlock_wake: + cfi_startproc pushl %ebx + cfi_adjust_cfa_offset(4) pushl %ecx + cfi_adjust_cfa_offset(4) pushl %edx + cfi_adjust_cfa_offset(4) + cfi_offset(%ebx, -8) + cfi_offset(%ecx, -12) + cfi_offset(%edx, -16) movl %eax, %ebx movl $0, (%eax) - movl $FUTEX_WAKE, %ecx + LOAD_FUTEX_WAKE (%ecx) movl $1, %edx /* Wake one thread. */ movl $SYS_futex, %eax ENTER_KERNEL popl %edx + cfi_adjust_cfa_offset(-4) + cfi_restore(%edx) popl %ecx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ecx) popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) ret - .size __lll_mutex_unlock_wake,.-__lll_mutex_unlock_wake + cfi_endproc + .size __lll_unlock_wake,.-__lll_unlock_wake - -#ifdef NOT_IN_libc .globl __lll_timedwait_tid .type __lll_timedwait_tid,@function .hidden __lll_timedwait_tid @@ -234,7 +407,7 @@ __lll_timedwait_tid: /* Get current time. */ 2: movl %esp, %ebx xorl %ecx, %ecx - movl $SYS_gettimeofday, %eax + movl $__NR_gettimeofday, %eax ENTER_KERNEL /* Compute relative timeout. */ @@ -259,6 +432,8 @@ __lll_timedwait_tid: jz 4f movl %esp, %esi + /* XXX The kernel so far uses global futex for the wakeup at + all times. */ xorl %ecx, %ecx /* movl $FUTEX_WAIT, %ecx */ movl %ebp, %ebx movl $SYS_futex, %eax diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelrobustlock.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelrobustlock.S new file mode 100644 index 000000000..596763444 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelrobustlock.S @@ -0,0 +1,233 @@ +/* Copyright (C) 2002, 2003, 2004, 2006, 2007 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 <pthread-errnos.h> +#include <lowlevellock.h> +#include <lowlevelrobustlock.h> +#include <bits/kernel-features.h> + + .text + +#define FUTEX_WAITERS 0x80000000 +#define FUTEX_OWNER_DIED 0x40000000 + +#ifdef __ASSUME_PRIVATE_FUTEX +# define LOAD_FUTEX_WAIT(reg) \ + xorl $(FUTEX_WAIT | FUTEX_PRIVATE_FLAG), reg +#else +# if FUTEX_WAIT == 0 +# define LOAD_FUTEX_WAIT(reg) \ + xorl $FUTEX_PRIVATE_FLAG, reg ; \ + andl %gs:PRIVATE_FUTEX, reg +# else +# define LOAD_FUTEX_WAIT(reg) \ + xorl $FUTEX_PRIVATE_FLAG, reg ; \ + andl %gs:PRIVATE_FUTEX, reg ; \ + orl $FUTEX_WAIT, reg +# endif +#endif + + .globl __lll_robust_lock_wait + .type __lll_robust_lock_wait,@function + .hidden __lll_robust_lock_wait + .align 16 +__lll_robust_lock_wait: + cfi_startproc + pushl %edx + cfi_adjust_cfa_offset(4) + pushl %ebx + cfi_adjust_cfa_offset(4) + pushl %esi + cfi_adjust_cfa_offset(4) + cfi_offset(%edx, -8) + cfi_offset(%ebx, -12) + cfi_offset(%esi, -16) + + movl %edx, %ebx + xorl %esi, %esi /* No timeout. */ + LOAD_FUTEX_WAIT (%ecx) + +4: movl %eax, %edx + orl $FUTEX_WAITERS, %edx + + testl $FUTEX_OWNER_DIED, %eax + jnz 3f + + cmpl %edx, %eax /* NB: %edx == 2 */ + je 1f + + LOCK + cmpxchgl %edx, (%ebx) + jnz 2f + +1: movl $SYS_futex, %eax + ENTER_KERNEL + + movl (%ebx), %eax + +2: test %eax, %eax + jne 4b + + movl %gs:TID, %edx + orl $FUTEX_WAITERS, %edx + LOCK + cmpxchgl %edx, (%ebx) + jnz 4b + /* NB: %eax == 0 */ + +3: popl %esi + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) + popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + popl %edx + cfi_adjust_cfa_offset(-4) + cfi_restore(%edx) + ret + cfi_endproc + .size __lll_robust_lock_wait,.-__lll_robust_lock_wait + + + .globl __lll_robust_timedlock_wait + .type __lll_robust_timedlock_wait,@function + .hidden __lll_robust_timedlock_wait + .align 16 +__lll_robust_timedlock_wait: + cfi_startproc + /* Check for a valid timeout value. */ + cmpl $1000000000, 4(%edx) + jae 3f + + pushl %edi + cfi_adjust_cfa_offset(4) + pushl %esi + cfi_adjust_cfa_offset(4) + pushl %ebx + cfi_adjust_cfa_offset(4) + pushl %ebp + cfi_adjust_cfa_offset(4) + cfi_offset(%edi, -8) + cfi_offset(%esi, -12) + cfi_offset(%ebx, -16) + cfi_offset(%ebp, -20) + + /* Stack frame for the timespec and timeval structs. */ + subl $12, %esp + cfi_adjust_cfa_offset(12) + + movl %ecx, %ebp + movl %edx, %edi + +1: movl %eax, 8(%esp) + + /* Get current time. */ + 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 4f + addl $1000000000, %edx + subl $1, %ecx +4: testl %ecx, %ecx + js 8f /* Time is already up. */ + + /* Store relative timeout. */ + movl %ecx, (%esp) + movl %edx, 4(%esp) + + movl %ebp, %ebx + + movl 8(%esp), %edx + movl %edx, %eax + orl $FUTEX_WAITERS, %edx + + testl $FUTEX_OWNER_DIED, %eax + jnz 6f + + cmpl %eax, %edx + je 2f + + LOCK + cmpxchgl %edx, (%ebx) + movl $0, %ecx /* Must use mov to avoid changing cc. */ + jnz 5f + +2: + /* Futex call. */ + movl %esp, %esi + movl 20(%esp), %ecx + LOAD_FUTEX_WAIT (%ecx) + movl $SYS_futex, %eax + ENTER_KERNEL + movl %eax, %ecx + + movl (%ebx), %eax + +5: testl %eax, %eax + jne 7f + + movl %gs:TID, %edx + orl $FUTEX_WAITERS, %edx + LOCK + cmpxchgl %edx, (%ebx) + jnz 7f + +6: addl $12, %esp + cfi_adjust_cfa_offset(-12) + popl %ebp + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebp) + popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + popl %esi + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) + popl %edi + cfi_adjust_cfa_offset(-4) + cfi_restore(%edi) + ret + +3: movl $EINVAL, %eax + ret + + cfi_adjust_cfa_offset(28) + cfi_offset(%edi, -8) + cfi_offset(%esi, -12) + cfi_offset(%ebx, -16) + cfi_offset(%ebp, -20) + /* Check whether the time expired. */ +7: cmpl $-ETIMEDOUT, %ecx + jne 1b + +8: movl $ETIMEDOUT, %eax + jmp 6b + cfi_endproc + .size __lll_robust_timedlock_wait,.-__lll_robust_timedlock_wait diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S index 2af9e38cd..040d7f8c3 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003, 2004, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -18,25 +18,19 @@ 02111-1307 USA. */ #include <sysdep.h> +#include <lowlevellock.h> #include <lowlevelbarrier.h> -#define FUTEX_WAIT 0 -#define FUTEX_WAKE 1 - -#ifndef UP -# define LOCK lock -#else -# define LOCK -#endif - - .text .globl pthread_barrier_wait .type pthread_barrier_wait,@function .align 16 pthread_barrier_wait: + cfi_startproc pushl %ebx + cfi_adjust_cfa_offset(4) + cfi_offset(%ebx, -8) movl 8(%esp), %ebx @@ -54,6 +48,8 @@ pthread_barrier_wait: /* There are more threads to come. */ pushl %esi + cfi_adjust_cfa_offset(4) + cfi_offset(%esi, -12) #if CURR_EVENT == 0 movl (%ebx), %edx @@ -68,7 +64,13 @@ pthread_barrier_wait: /* Wait for the remaining threads. The call will return immediately if the CURR_EVENT memory has meanwhile been changed. */ -7: xorl %ecx, %ecx /* movl $FUTEX_WAIT, %ecx */ +7: +#if FUTEX_WAIT == 0 + movl PRIVATE(%ebx), %ecx +#else + movl $FUTEX_WAIT, %ecx + orl PRIVATE(%ebx), %ecx +#endif xorl %esi, %esi 8: movl $SYS_futex, %eax ENTER_KERNEL @@ -81,7 +83,7 @@ pthread_barrier_wait: #else cmpl %edx, CURR_EVENT(%ebx) #endif - je,pn 8b + je 8b /* Increment LEFT. If this brings the count back to the initial count unlock the object. */ @@ -91,7 +93,7 @@ pthread_barrier_wait: xaddl %edx, LEFT(%ebx) subl $1, %ecx cmpl %ecx, %edx - jne,pt 10f + jne 10f /* Release the mutex. We cannot release the lock before waking the waiting threads since otherwise a new thread might @@ -104,9 +106,16 @@ pthread_barrier_wait: 10: movl %esi, %eax /* != PTHREAD_BARRIER_SERIAL_THREAD */ popl %esi + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) ret + cfi_adjust_cfa_offset(4) + cfi_offset(%ebx, -8) + /* The necessary number of threads arrived. */ 3: #if CURR_EVENT == 0 @@ -119,6 +128,7 @@ pthread_barrier_wait: so 0x7fffffff is the highest value. */ movl $0x7fffffff, %edx movl $FUTEX_WAKE, %ecx + orl PRIVATE(%ebx), %ecx movl $SYS_futex, %eax ENTER_KERNEL @@ -130,7 +140,7 @@ pthread_barrier_wait: xaddl %edx, LEFT(%ebx) subl $1, %ecx cmpl %ecx, %edx - jne,pt 5f + jne 5f /* Release the mutex. We cannot release the lock before waking the waiting threads since otherwise a new thread might @@ -142,21 +152,36 @@ pthread_barrier_wait: 5: orl $-1, %eax /* == PTHREAD_BARRIER_SERIAL_THREAD */ popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) ret -1: leal MUTEX(%ebx), %ecx - call __lll_mutex_lock_wait + cfi_adjust_cfa_offset(4) + cfi_offset(%ebx, -8) +1: movl PRIVATE(%ebx), %ecx + leal MUTEX(%ebx), %edx + xorl $LLL_SHARED, %ecx + call __lll_lock_wait jmp 2b -4: leal MUTEX(%ebx), %eax - call __lll_mutex_unlock_wake +4: movl PRIVATE(%ebx), %ecx + leal MUTEX(%ebx), %eax + xorl $LLL_SHARED, %ecx + call __lll_unlock_wake jmp 5b -6: leal MUTEX(%ebx), %eax - call __lll_mutex_unlock_wake + cfi_adjust_cfa_offset(4) + cfi_offset(%esi, -12) +6: movl PRIVATE(%ebx), %ecx + leal MUTEX(%ebx), %eax + xorl $LLL_SHARED, %ecx + call __lll_unlock_wake jmp 7b -9: leal MUTEX(%ebx), %eax - call __lll_mutex_unlock_wake +9: movl PRIVATE(%ebx), %ecx + leal MUTEX(%ebx), %eax + xorl $LLL_SHARED, %ecx + call __lll_unlock_wake jmp 10b + cfi_endproc .size pthread_barrier_wait,.-pthread_barrier_wait diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S index 6e8ffe6f6..669b96a95 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. +/* Copyright (C) 2002,2003,2004,2006,2007,2009 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -18,22 +18,11 @@ 02111-1307 USA. */ #include <sysdep.h> +#include <lowlevellock.h> #include <lowlevelcond.h> #include <bits/kernel-features.h> - -#ifdef UP -# define LOCK -#else -# define LOCK lock -#endif - -#define FUTEX_WAIT 0 -#define FUTEX_WAKE 1 -#define FUTEX_REQUEUE 3 -#define FUTEX_CMP_REQUEUE 4 - -#define EINVAL 22 - +#include <pthread-pi-defines.h> +#include <pthread-errnos.h> .text @@ -42,11 +31,20 @@ .type __pthread_cond_broadcast, @function .align 16 __pthread_cond_broadcast: - + cfi_startproc pushl %ebx + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%ebx, 0) pushl %esi + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%esi, 0) pushl %edi + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%edi, 0) pushl %ebp + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%ebp, 0) + cfi_remember_state movl 20(%esp), %ebx @@ -92,8 +90,24 @@ __pthread_cond_broadcast: 8: cmpl $-1, %edi je 9f + /* Do not use requeue for pshared condvars. */ + testl $PS_BIT, MUTEX_KIND(%edi) + jne 9f + + /* Requeue to a non-robust PI mutex if the PI bit is set and + the robust bit is not set. */ + movl MUTEX_KIND(%edi), %eax + andl $(ROBUST_BIT|PI_BIT), %eax + cmpl $PI_BIT, %eax + je 81f + /* Wake up all threads. */ - movl $FUTEX_CMP_REQUEUE, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + movl $(FUTEX_CMP_REQUEUE|FUTEX_PRIVATE_FLAG), %ecx +#else + movl %gs:PRIVATE_FUTEX, %ecx + orl $FUTEX_CMP_REQUEUE, %ecx +#endif movl $SYS_futex, %eax movl $0x7fffffff, %esi movl $1, %edx @@ -111,51 +125,113 @@ __pthread_cond_broadcast: cmpl $0xfffff001, %eax jae 9f -10: xorl %eax, %eax +6: xorl %eax, %eax popl %ebp + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebp) popl %edi + cfi_adjust_cfa_offset(-4) + cfi_restore(%edi) popl %esi + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) ret - .align 16 - /* Unlock. */ -4: LOCK - subl $1, cond_lock-cond_futex(%ebx) - jne 5f + cfi_restore_state -6: xorl %eax, %eax - popl %ebp - popl %edi - popl %esi - popl %ebx - ret +81: movl $(FUTEX_CMP_REQUEUE_PI|FUTEX_PRIVATE_FLAG), %ecx + movl $SYS_futex, %eax + movl $0x7fffffff, %esi + movl $1, %edx + /* Get the address of the futex involved. */ +# if MUTEX_FUTEX != 0 + addl $MUTEX_FUTEX, %edi +# endif + int $0x80 + + /* For any kind of error, which mainly is EAGAIN, we try again + with WAKE. The general test also covers running on old + kernels. */ + cmpl $0xfffff001, %eax + jb 6b + jmp 9f /* Initial locking failed. */ 1: #if cond_lock == 0 - movl %ebx, %ecx + movl %ebx, %edx #else - leal cond_lock(%ebx), %ecx + leal cond_lock(%ebx), %edx #endif - call __lll_mutex_lock_wait +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_lock_wait jmp 2b - /* Unlock in loop requires waekup. */ + .align 16 + /* Unlock. */ +4: LOCK + subl $1, cond_lock-cond_futex(%ebx) + je 6b + + /* Unlock in loop requires wakeup. */ 5: leal cond_lock-cond_futex(%ebx), %eax - call __lll_mutex_unlock_wake +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_futex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_unlock_wake jmp 6b - /* Unlock in loop requires waekup. */ + /* Unlock in loop requires wakeup. */ 7: leal cond_lock-cond_futex(%ebx), %eax - call __lll_mutex_unlock_wake +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_futex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_unlock_wake jmp 8b 9: /* The futex requeue functionality is not available. */ movl $0x7fffffff, %edx - movl $FUTEX_WAKE, %ecx +#if FUTEX_PRIVATE_FLAG > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_futex(%ebx) + sete %cl + subl $1, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif + addl $FUTEX_WAKE, %ecx movl $SYS_futex, %eax ENTER_KERNEL - jmp 10b + jmp 6b + cfi_endproc .size __pthread_cond_broadcast, .-__pthread_cond_broadcast weak_alias(__pthread_cond_broadcast, pthread_cond_broadcast) diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S index ec8217987..54e80d059 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. +/* Copyright (C) 2002,2003,2004,2005,2007,2009 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -18,20 +18,11 @@ 02111-1307 USA. */ #include <sysdep.h> +#include <lowlevellock.h> #include <lowlevelcond.h> #include <bits/kernel-features.h> - -#ifdef UP -# define LOCK -#else -# define LOCK lock -#endif - -#define FUTEX_WAIT 0 -#define FUTEX_WAKE 1 -#define FUTEX_REQUEUE 3 - -#define EINVAL 22 +#include <pthread-pi-defines.h> +#include <pthread-errnos.h> .text @@ -42,8 +33,14 @@ .align 16 __pthread_cond_signal: + cfi_startproc pushl %ebx + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%ebx, 0) pushl %edi + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%edi, 0) + cfi_remember_state movl 12(%esp), %edi @@ -77,35 +74,141 @@ __pthread_cond_signal: addl $1, (%ebx) /* Wake up one thread. */ - movl $FUTEX_WAKE, %ecx + pushl %esi + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%esi, 0) + pushl %ebp + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%ebp, 0) + +#if FUTEX_PRIVATE_FLAG > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_futex(%ebx) + sete %cl + je 8f + + movl dep_mutex-cond_futex(%ebx), %edx + /* Requeue to a non-robust PI mutex if the PI bit is set and + the robust bit is not set. */ + movl MUTEX_KIND(%edx), %eax + andl $(ROBUST_BIT|PI_BIT), %eax + cmpl $PI_BIT, %eax + je 9f + +8: subl $1, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif + addl $FUTEX_WAKE_OP, %ecx movl $SYS_futex, %eax movl $1, %edx + movl $1, %esi + movl $FUTEX_OP_CLEAR_WAKE_IF_GT_ONE, %ebp + /* FIXME: Until Ingo fixes 4G/4G vDSO, 6 arg syscalls are broken for + sysenter. + ENTER_KERNEL */ + int $0x80 + popl %ebp + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebp) + popl %esi + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) + + /* For any kind of error, we try again with WAKE. + The general test also covers running on old kernels. */ + cmpl $-4095, %eax + jae 7f + +6: 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_restore_state + +9: movl $(FUTEX_CMP_REQUEUE_PI|FUTEX_PRIVATE_FLAG), %ecx + movl $SYS_futex, %eax + movl $1, %edx + xorl %esi, %esi + movl dep_mutex-cond_futex(%ebx), %edi + movl (%ebx), %ebp + /* FIXME: Until Ingo fixes 4G/4G vDSO, 6 arg syscalls are broken for + sysenter. + ENTER_KERNEL */ + int $0x80 + popl %ebp + popl %esi + + leal -cond_futex(%ebx), %edi + + /* For any kind of error, we try again with WAKE. + The general test also covers running on old kernels. */ + cmpl $-4095, %eax + jb 4f + +7: +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif + orl $FUTEX_WAKE, %ecx + + xorl $(FUTEX_WAKE ^ FUTEX_WAKE_OP), %ecx + movl $SYS_futex, %eax + /* %edx should be 1 already from $FUTEX_WAKE_OP syscall. + movl $1, %edx */ ENTER_KERNEL /* Unlock. Note that at this point %edi always points to cond_lock. */ 4: LOCK subl $1, (%edi) - jne 5f + je 6b -6: xorl %eax, %eax - popl %edi - popl %ebx - ret + /* Unlock in loop requires wakeup. */ +5: movl %edi, %eax +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_futex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_unlock_wake + jmp 6b /* Initial locking failed. */ 1: #if cond_lock == 0 - movl %edi, %ecx + movl %edi, %edx #else - leal cond_lock(%edi), %ecx + leal cond_lock(%edi), %edx +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx #endif - call __lll_mutex_lock_wait + cmpl $-1, dep_mutex(%edi) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_lock_wait jmp 2b - /* Unlock in loop requires wakeup. */ -5: movl %edi, %eax - call __lll_mutex_unlock_wake - jmp 6b + cfi_endproc .size __pthread_cond_signal, .-__pthread_cond_signal weak_alias(__pthread_cond_signal, pthread_cond_signal) diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S index b8f0d2e4b..c56dd7716 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. +/* Copyright (C) 2002-2004,2006-2007,2009,2010 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -18,17 +18,11 @@ 02111-1307 USA. */ #include <sysdep.h> +#include <lowlevellock.h> #include <lowlevelcond.h> #include <pthread-errnos.h> - -#ifdef UP -# define LOCK -#else -# define LOCK lock -#endif - -#define FUTEX_WAIT 0 -#define FUTEX_WAKE 1 +#include <pthread-pi-defines.h> +#include <bits/kernel-features.h> .text @@ -40,14 +34,28 @@ .align 16 __pthread_cond_timedwait: .LSTARTCODE: + cfi_startproc +#ifdef SHARED + cfi_personality(DW_EH_PE_pcrel | DW_EH_PE_sdata4 | DW_EH_PE_indirect, + DW.ref.__gcc_personality_v0) + cfi_lsda(DW_EH_PE_pcrel | DW_EH_PE_sdata4, .LexceptSTART) +#else + cfi_personality(DW_EH_PE_udata4, __gcc_personality_v0) + cfi_lsda(DW_EH_PE_udata4, .LexceptSTART) +#endif + pushl %ebp -.Lpush_ebp: + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%ebp, 0) pushl %edi -.Lpush_edi: + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%edi, 0) pushl %esi -.Lpush_esi: + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%esi, 0) pushl %ebx -.Lpush_ebx: + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%ebx, 0) movl 20(%esp), %ebx movl 28(%esp), %ebp @@ -84,11 +92,12 @@ __pthread_cond_timedwait: addl $1, total_seq(%ebx) adcl $0, total_seq+4(%ebx) addl $1, cond_futex(%ebx) - addl $(1 << clock_bits), cond_nwaiters(%ebx) + addl $(1 << nwaiters_shift), cond_nwaiters(%ebx) -#define FRAME_SIZE 24 +#define FRAME_SIZE 32 subl $FRAME_SIZE, %esp -.Lsubl: + cfi_adjust_cfa_offset(FRAME_SIZE) + cfi_remember_state /* Get and store current wakeup_seq value. */ movl wakeup_seq(%ebx), %edi @@ -98,12 +107,14 @@ __pthread_cond_timedwait: movl %edx, 16(%esp) movl %eax, 20(%esp) + /* Reset the pi-requeued flag. */ +8: movl $0, 24(%esp) /* Get the current time. */ -8: movl %ebx, %edx + movl %ebx, %edx #ifdef __NR_clock_gettime /* Get the clock number. */ movl cond_nwaiters(%ebx), %ebx - andl $((1 << clock_bits) - 1), %ebx + andl $((1 << nwaiters_shift) - 1), %ebx /* Only clocks 0 and 1 are allowed so far. Both are handled in the kernel. */ leal 4(%esp), %ecx @@ -124,7 +135,7 @@ __pthread_cond_timedwait: /* Get the current time. */ leal 4(%esp), %ebx xorl %ecx, %ecx - movl $SYS_gettimeofday, %eax + movl $__NR_gettimeofday, %eax ENTER_KERNEL movl %edx, %ebx @@ -149,6 +160,7 @@ __pthread_cond_timedwait: movl %edx, 8(%esp) movl cond_futex(%ebx), %edi + movl %edi, 28(%esp) /* Unlock. */ LOCK @@ -163,9 +175,60 @@ __pthread_cond_timedwait: 4: call __pthread_enable_asynccancel movl %eax, (%esp) +#if FUTEX_PRIVATE_FLAG > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + sete %cl + je 40f + + movl dep_mutex(%ebx), %edi + /* Requeue to a non-robust PI mutex if the PI bit is set and + the robust bit is not set. */ + movl MUTEX_KIND(%edi), %eax + andl $(ROBUST_BIT|PI_BIT), %eax + cmpl $PI_BIT, %eax + jne 40f + + movl $(FUTEX_WAIT_REQUEUE_PI|FUTEX_PRIVATE_FLAG), %ecx + /* The following only works like this because we only support + two clocks, represented using a single bit. */ + testl $1, cond_nwaiters(%ebx) + /* XXX Need to implement using sete instead of a jump. */ + jne 42f + orl $FUTEX_CLOCK_REALTIME, %ecx + + /* Requeue-PI uses absolute timeout */ +42: leal (%ebp), %esi + movl 28(%esp), %edx + addl $cond_futex, %ebx + movl $SYS_futex, %eax + ENTER_KERNEL + subl $cond_futex, %ebx + movl %eax, %esi + /* Set the pi-requeued flag only if the kernel has returned 0. The + kernel does not hold the mutex on ETIMEDOUT or any other error. */ + cmpl $0, %eax + sete 24(%esp) + je 41f + + /* Normal and PI futexes dont mix. Use normal futex functions only + if the kernel does not support the PI futex functions. */ + cmpl $-ENOSYS, %eax + jne 41f + xorl %ecx, %ecx + +40: subl $1, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif +#if FUTEX_WAIT != 0 + addl $FUTEX_WAIT, %ecx +#endif leal 4(%esp), %esi - xorl %ecx, %ecx /* movl $FUTEX_WAIT, %ecx */ - movl %edi, %edx + movl 28(%esp), %edx addl $cond_futex, %ebx .Ladd_cond_futex: movl $SYS_futex, %eax @@ -174,7 +237,7 @@ __pthread_cond_timedwait: .Lsub_cond_futex: movl %eax, %esi - movl (%esp), %eax +41: movl (%esp), %eax call __pthread_disable_asynccancel .LcleanupEND: @@ -225,7 +288,7 @@ __pthread_cond_timedwait: 14: addl $1, woken_seq(%ebx) adcl $0, woken_seq+4(%ebx) -24: subl $(1 << clock_bits), cond_nwaiters(%ebx) +24: subl $(1 << nwaiters_shift), cond_nwaiters(%ebx) /* Wake up a thread which wants to destroy the condvar object. */ movl total_seq(%ebx), %eax @@ -233,12 +296,23 @@ __pthread_cond_timedwait: cmpl $0xffffffff, %eax jne 25f movl cond_nwaiters(%ebx), %eax - andl $~((1 << clock_bits) - 1), %eax + andl $~((1 << nwaiters_shift) - 1), %eax jne 25f addl $cond_nwaiters, %ebx movl $SYS_futex, %eax - movl $FUTEX_WAKE, %ecx +#if FUTEX_PRIVATE_FLAG > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_nwaiters(%ebx) + sete %cl + subl $1, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif + addl $FUTEX_WAKE, %ecx movl $1, %edx ENTER_KERNEL subl $cond_nwaiters, %ebx @@ -251,11 +325,15 @@ __pthread_cond_timedwait: #endif jne 10f - /* Remove cancellation handler. */ 11: movl 24+FRAME_SIZE(%esp), %eax + /* With requeue_pi, the mutex lock is held in the kernel. */ + movl 24(%esp), %ecx + testl %ecx, %ecx + jnz 27f + call __pthread_mutex_cond_lock - addl $FRAME_SIZE, %esp -.Laddl: +26: addl $FRAME_SIZE, %esp + cfi_adjust_cfa_offset(-FRAME_SIZE); /* We return the result of the mutex_lock operation if it failed. */ testl %eax, %eax @@ -268,46 +346,118 @@ __pthread_cond_timedwait: #endif 18: popl %ebx -.Lpop_ebx: + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) popl %esi -.Lpop_esi: + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) popl %edi -.Lpop_edi: + cfi_adjust_cfa_offset(-4) + cfi_restore(%edi) popl %ebp -.Lpop_ebp: + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebp) ret + cfi_restore_state + +27: call __pthread_mutex_cond_lock_adjust + xorl %eax, %eax + jmp 26b + + cfi_adjust_cfa_offset(-FRAME_SIZE); /* Initial locking failed. */ 1: -.LSbl1: #if cond_lock == 0 - movl %ebx, %ecx + movl %ebx, %edx #else - leal cond_lock(%ebx), %ecx + leal cond_lock(%ebx), %edx +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx #endif - call __lll_mutex_lock_wait + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_lock_wait jmp 2b + /* The initial unlocking of the mutex failed. */ +16: + LOCK +#if cond_lock == 0 + subl $1, (%ebx) +#else + subl $1, cond_lock(%ebx) +#endif + jne 18b + + movl %eax, %esi +#if cond_lock == 0 + movl %ebx, %eax +#else + leal cond_lock(%ebx), %eax +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_unlock_wake + + movl %esi, %eax + jmp 18b + + cfi_adjust_cfa_offset(FRAME_SIZE) + /* Unlock in loop requires wakeup. */ 3: -.LSbl2: #if cond_lock == 0 movl %ebx, %eax #else leal cond_lock(%ebx), %eax #endif - call __lll_mutex_unlock_wake +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_unlock_wake jmp 4b /* Locking in loop failed. */ 5: #if cond_lock == 0 - movl %ebx, %ecx + movl %ebx, %edx #else - leal cond_lock(%ebx), %ecx + leal cond_lock(%ebx), %edx +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx #endif - call __lll_mutex_lock_wait + call __lll_lock_wait jmp 6b /* Unlock after loop requires wakeup. */ @@ -317,37 +467,24 @@ __pthread_cond_timedwait: #else leal cond_lock(%ebx), %eax #endif - call __lll_mutex_unlock_wake - jmp 11b - - /* The initial unlocking of the mutex failed. */ -16: -.LSbl3: - LOCK -#if cond_lock == 0 - subl $1, (%ebx) -#else - subl $1, cond_lock(%ebx) +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx #endif - jne 18b - - movl %eax, %esi -#if cond_lock == 0 - movl %ebx, %eax -#else - leal cond_lock(%ebx), %eax + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx #endif - call __lll_mutex_unlock_wake - - movl %esi, %eax - jmp 18b + call __lll_unlock_wake + jmp 11b #if defined __NR_clock_gettime && !defined __ASSUME_POSIX_TIMERS /* clock_gettime not available. */ -.LSbl4: 19: leal 4(%esp), %ebx xorl %ecx, %ecx - movl $SYS_gettimeofday, %eax + movl $__NR_gettimeofday, %eax ENTER_KERNEL movl %edx, %ebx @@ -374,7 +511,6 @@ weak_alias(__pthread_cond_timedwait, pthread_cond_timedwait) .type __condvar_tw_cleanup2, @function __condvar_tw_cleanup2: subl $cond_futex, %ebx -.LSbl5: .size __condvar_tw_cleanup2, .-__condvar_tw_cleanup2 .type __condvar_tw_cleanup, @function __condvar_tw_cleanup: @@ -392,25 +528,45 @@ __condvar_tw_cleanup: jz 1f #if cond_lock == 0 - movl %ebx, %ecx + movl %ebx, %edx #else - leal cond_lock(%ebx), %ecx + leal cond_lock(%ebx), %edx +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx #endif - call __lll_mutex_lock_wait + call __lll_lock_wait 1: movl broadcast_seq(%ebx), %eax cmpl 20(%esp), %eax jne 3f - addl $1, wakeup_seq(%ebx) + /* We increment the wakeup_seq counter only if it is lower than + total_seq. If this is not the case the thread was woken and + then canceled. In this case we ignore the signal. */ + movl total_seq(%ebx), %eax + movl total_seq+4(%ebx), %edi + cmpl wakeup_seq+4(%ebx), %edi + jb 6f + ja 7f + cmpl wakeup_seq(%ebx), %eax + jbe 7f + +6: addl $1, wakeup_seq(%ebx) adcl $0, wakeup_seq+4(%ebx) - addl $1, cond_futex(%ebx) - addl $1, woken_seq(%ebx) +7: addl $1, woken_seq(%ebx) adcl $0, woken_seq+4(%ebx) -3: subl $(1 << clock_bits), cond_nwaiters(%ebx) +3: subl $(1 << nwaiters_shift), cond_nwaiters(%ebx) /* Wake up a thread which wants to destroy the condvar object. */ xorl %edi, %edi @@ -419,12 +575,23 @@ __condvar_tw_cleanup: cmpl $0xffffffff, %eax jne 4f movl cond_nwaiters(%ebx), %eax - andl $~((1 << clock_bits) - 1), %eax + andl $~((1 << nwaiters_shift) - 1), %eax jne 4f addl $cond_nwaiters, %ebx movl $SYS_futex, %eax - movl $FUTEX_WAKE, %ecx +#if FUTEX_PRIVATE_FLAG > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_nwaiters(%ebx) + sete %cl + subl $1, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif + addl $FUTEX_WAKE, %ecx movl $1, %edx ENTER_KERNEL subl $cond_nwaiters, %ebx @@ -443,13 +610,34 @@ __condvar_tw_cleanup: #else leal cond_lock(%ebx), %eax #endif - call __lll_mutex_unlock_wake +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_unlock_wake /* Wake up all waiters to make sure no signal gets lost. */ 2: testl %edi, %edi jnz 5f addl $cond_futex, %ebx - movl $FUTEX_WAKE, %ecx +#if FUTEX_PRIVATE_FLAG > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_futex(%ebx) + sete %cl + subl $1, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif + addl $FUTEX_WAKE, %ecx movl $SYS_futex, %eax movl $0x7fffffff, %edx ENTER_KERNEL @@ -462,4 +650,44 @@ __condvar_tw_cleanup: call _Unwind_Resume hlt .LENDCODE: + cfi_endproc .size __condvar_tw_cleanup, .-__condvar_tw_cleanup + + + .section .gcc_except_table,"a",@progbits +.LexceptSTART: + .byte DW_EH_PE_omit # @LPStart format (omit) + .byte DW_EH_PE_omit # @TType format (omit) + .byte DW_EH_PE_sdata4 # call-site format + # DW_EH_PE_sdata4 + .uleb128 .Lcstend-.Lcstbegin +.Lcstbegin: + .long .LcleanupSTART-.LSTARTCODE + .long .Ladd_cond_futex-.LcleanupSTART + .long __condvar_tw_cleanup-.LSTARTCODE + .uleb128 0 + .long .Ladd_cond_futex-.LSTARTCODE + .long .Lsub_cond_futex-.Ladd_cond_futex + .long __condvar_tw_cleanup2-.LSTARTCODE + .uleb128 0 + .long .Lsub_cond_futex-.LSTARTCODE + .long .LcleanupEND-.Lsub_cond_futex + .long __condvar_tw_cleanup-.LSTARTCODE + .uleb128 0 + .long .LcallUR-.LSTARTCODE + .long .LENDCODE-.LcallUR + .long 0 + .uleb128 0 +.Lcstend: + + +#ifdef SHARED + .hidden DW.ref.__gcc_personality_v0 + .weak DW.ref.__gcc_personality_v0 + .section .gnu.linkonce.d.DW.ref.__gcc_personality_v0,"aw",@progbits + .align 4 + .type DW.ref.__gcc_personality_v0, @object + .size DW.ref.__gcc_personality_v0, 4 +DW.ref.__gcc_personality_v0: + .long __gcc_personality_v0 +#endif diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S index 377a7340f..ab4ef0a45 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. +/* Copyright (C) 2002-2004,2006-2007,2009,2010 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -18,17 +18,12 @@ 02111-1307 USA. */ #include <sysdep.h> +#include <lowlevellock.h> #include <lowlevelcond.h> #include <tcb-offsets.h> - -#ifdef UP -# define LOCK -#else -# define LOCK lock -#endif - -#define FUTEX_WAIT 0 -#define FUTEX_WAKE 1 +#include <pthread-errnos.h> +#include <pthread-pi-defines.h> +#include <bits/kernel-features.h> .text @@ -39,16 +34,31 @@ .align 16 __pthread_cond_wait: .LSTARTCODE: + cfi_startproc +#ifdef SHARED + cfi_personality(DW_EH_PE_pcrel | DW_EH_PE_sdata4 | DW_EH_PE_indirect, + DW.ref.__gcc_personality_v0) + cfi_lsda(DW_EH_PE_pcrel | DW_EH_PE_sdata4, .LexceptSTART) +#else + cfi_personality(DW_EH_PE_udata4, __gcc_personality_v0) + cfi_lsda(DW_EH_PE_udata4, .LexceptSTART) +#endif + pushl %ebp + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%ebp, 0) pushl %edi -.Lpush_edi: + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%edi, 0) pushl %esi -.Lpush_esi: + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%esi, 0) pushl %ebx -.Lpush_ebx: + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%ebx, 0) xorl %esi, %esi - movl 16(%esp), %ebx + movl 20(%esp), %ebx /* Get internal lock. */ movl $1, %edx @@ -64,7 +74,7 @@ __pthread_cond_wait: /* Store the reference to the mutex. If there is already a different value in there this is a bad user bug. */ 2: cmpl $-1, dep_mutex(%ebx) - movl 20(%esp), %eax + movl 24(%esp), %eax je 15f movl %eax, dep_mutex(%ebx) @@ -78,11 +88,12 @@ __pthread_cond_wait: addl $1, total_seq(%ebx) adcl $0, total_seq+4(%ebx) addl $1, cond_futex(%ebx) - addl $(1 << clock_bits), cond_nwaiters(%ebx) + addl $(1 << nwaiters_shift), cond_nwaiters(%ebx) -#define FRAME_SIZE 16 +#define FRAME_SIZE 20 subl $FRAME_SIZE, %esp -.Lsubl: + cfi_adjust_cfa_offset(FRAME_SIZE) + cfi_remember_state /* Get and store current wakeup_seq value. */ movl wakeup_seq(%ebx), %edi @@ -92,7 +103,9 @@ __pthread_cond_wait: movl %edx, 8(%esp) movl %eax, 12(%esp) -8: movl cond_futex(%ebx), %edi + /* Reset the pi-requeued flag. */ +8: movl $0, 16(%esp) + movl cond_futex(%ebx), %ebp /* Unlock. */ LOCK @@ -107,8 +120,48 @@ __pthread_cond_wait: 4: call __pthread_enable_asynccancel movl %eax, (%esp) - movl %esi, %ecx /* movl $FUTEX_WAIT, %ecx */ - movl %edi, %edx + xorl %ecx, %ecx + cmpl $-1, dep_mutex(%ebx) + sete %cl + je 18f + + movl dep_mutex(%ebx), %edi + /* Requeue to a non-robust PI mutex if the PI bit is set and + the robust bit is not set. */ + movl MUTEX_KIND(%edi), %eax + andl $(ROBUST_BIT|PI_BIT), %eax + cmpl $PI_BIT, %eax + jne 18f + + movl $(FUTEX_WAIT_REQUEUE_PI|FUTEX_PRIVATE_FLAG), %ecx + movl %ebp, %edx + xorl %esi, %esi + addl $cond_futex, %ebx + movl $SYS_futex, %eax + ENTER_KERNEL + subl $cond_futex, %ebx + /* Set the pi-requeued flag only if the kernel has returned 0. The + kernel does not hold the mutex on error. */ + cmpl $0, %eax + sete 16(%esp) + je 19f + + /* Normal and PI futexes dont mix. Use normal futex functions only + if the kernel does not support the PI futex functions. */ + cmpl $-ENOSYS, %eax + jne 19f + xorl %ecx, %ecx + +18: subl $1, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif +#if FUTEX_WAIT != 0 + addl $FUTEX_WAIT, %ecx +#endif + movl %ebp, %edx addl $cond_futex, %ebx .Ladd_cond_futex: movl $SYS_futex, %eax @@ -116,7 +169,7 @@ __pthread_cond_wait: subl $cond_futex, %ebx .Lsub_cond_futex: - movl (%esp), %eax +19: movl (%esp), %eax call __pthread_disable_asynccancel .LcleanupEND: @@ -155,7 +208,7 @@ __pthread_cond_wait: adcl $0, woken_seq+4(%ebx) /* Unlock */ -16: subl $(1 << clock_bits), cond_nwaiters(%ebx) +16: subl $(1 << nwaiters_shift), cond_nwaiters(%ebx) /* Wake up a thread which wants to destroy the condvar object. */ movl total_seq(%ebx), %eax @@ -163,12 +216,23 @@ __pthread_cond_wait: cmpl $0xffffffff, %eax jne 17f movl cond_nwaiters(%ebx), %eax - andl $~((1 << clock_bits) - 1), %eax + andl $~((1 << nwaiters_shift) - 1), %eax jne 17f addl $cond_nwaiters, %ebx movl $SYS_futex, %eax - movl $FUTEX_WAKE, %ecx +#if FUTEX_PRIVATE_FLAG > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_nwaiters(%ebx) + sete %cl + subl $1, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif + addl $FUTEX_WAKE, %ecx movl $1, %edx ENTER_KERNEL subl $cond_nwaiters, %ebx @@ -181,51 +245,130 @@ __pthread_cond_wait: #endif jne 10f -11: movl 20+FRAME_SIZE(%esp), %eax + /* With requeue_pi, the mutex lock is held in the kernel. */ +11: movl 24+FRAME_SIZE(%esp), %eax + movl 16(%esp), %ecx + testl %ecx, %ecx + jnz 21f + call __pthread_mutex_cond_lock - addl $FRAME_SIZE, %esp -.Laddl: +20: addl $FRAME_SIZE, %esp + cfi_adjust_cfa_offset(-FRAME_SIZE); 14: popl %ebx -.Lpop_ebx: + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) popl %esi -.Lpop_esi: + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) popl %edi -.Lpop_edi: + cfi_adjust_cfa_offset(-4) + cfi_restore(%edi) + popl %ebp + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebp) /* We return the result of the mutex_lock operation. */ ret + cfi_restore_state + +21: call __pthread_mutex_cond_lock_adjust + xorl %eax, %eax + jmp 20b + + cfi_adjust_cfa_offset(-FRAME_SIZE); /* Initial locking failed. */ 1: -.LSbl1: #if cond_lock == 0 - movl %ebx, %ecx + movl %ebx, %edx #else - leal cond_lock(%ebx), %ecx + leal cond_lock(%ebx), %edx +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx #endif - call __lll_mutex_lock_wait + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_lock_wait jmp 2b - /* Unlock in loop requires waekup. */ + /* The initial unlocking of the mutex failed. */ +12: + LOCK +#if cond_lock == 0 + subl $1, (%ebx) +#else + subl $1, cond_lock(%ebx) +#endif + jne 14b + + movl %eax, %esi +#if cond_lock == 0 + movl %ebx, %eax +#else + leal cond_lock(%ebx), %eax +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_unlock_wake + + movl %esi, %eax + jmp 14b + + cfi_adjust_cfa_offset(FRAME_SIZE) + + /* Unlock in loop requires wakeup. */ 3: -.LSbl2: #if cond_lock == 0 movl %ebx, %eax #else leal cond_lock(%ebx), %eax #endif - call __lll_mutex_unlock_wake +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_unlock_wake jmp 4b /* Locking in loop failed. */ 5: #if cond_lock == 0 - movl %ebx, %ecx + movl %ebx, %edx #else - leal cond_lock(%ebx), %ecx + leal cond_lock(%ebx), %edx +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx #endif - call __lll_mutex_lock_wait + call __lll_lock_wait jmp 6b /* Unlock after loop requires wakeup. */ @@ -235,30 +378,18 @@ __pthread_cond_wait: #else leal cond_lock(%ebx), %eax #endif - call __lll_mutex_unlock_wake - jmp 11b - - /* The initial unlocking of the mutex failed. */ -12: -.LSbl3: - LOCK -#if cond_lock == 0 - subl $1, (%ebx) -#else - subl $1, cond_lock(%ebx) +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx #endif - jne 14b - - movl %eax, %esi -#if cond_lock == 0 - movl %ebx, %eax -#else - leal cond_lock(%ebx), %eax + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx #endif - call __lll_mutex_unlock_wake - - movl %esi, %eax - jmp 14b + call __lll_unlock_wake + jmp 11b .size __pthread_cond_wait, .-__pthread_cond_wait weak_alias(__pthread_cond_wait, pthread_cond_wait) @@ -284,25 +415,45 @@ __condvar_w_cleanup: jz 1f #if cond_lock == 0 - movl %ebx, %ecx + movl %ebx, %edx #else - leal cond_lock(%ebx), %ecx + leal cond_lock(%ebx), %edx +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx #endif - call __lll_mutex_lock_wait + call __lll_lock_wait 1: movl broadcast_seq(%ebx), %eax cmpl 12(%esp), %eax jne 3f - addl $1, wakeup_seq(%ebx) + /* We increment the wakeup_seq counter only if it is lower than + total_seq. If this is not the case the thread was woken and + then canceled. In this case we ignore the signal. */ + movl total_seq(%ebx), %eax + movl total_seq+4(%ebx), %edi + cmpl wakeup_seq+4(%ebx), %edi + jb 6f + ja 7f + cmpl wakeup_seq(%ebx), %eax + jbe 7f + +6: addl $1, wakeup_seq(%ebx) adcl $0, wakeup_seq+4(%ebx) - addl $1, cond_futex(%ebx) - addl $1, woken_seq(%ebx) +7: addl $1, woken_seq(%ebx) adcl $0, woken_seq+4(%ebx) -3: subl $(1 << clock_bits), cond_nwaiters(%ebx) +3: subl $(1 << nwaiters_shift), cond_nwaiters(%ebx) /* Wake up a thread which wants to destroy the condvar object. */ xorl %edi, %edi @@ -311,12 +462,23 @@ __condvar_w_cleanup: cmpl $0xffffffff, %eax jne 4f movl cond_nwaiters(%ebx), %eax - andl $~((1 << clock_bits) - 1), %eax + andl $~((1 << nwaiters_shift) - 1), %eax jne 4f addl $cond_nwaiters, %ebx movl $SYS_futex, %eax - movl $FUTEX_WAKE, %ecx +#if FUTEX_PRIVATE_FLAG > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_nwaiters(%ebx) + sete %cl + subl $1, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif + addl $FUTEX_WAKE, %ecx movl $1, %edx ENTER_KERNEL subl $cond_nwaiters, %ebx @@ -335,18 +497,39 @@ __condvar_w_cleanup: #else leal cond_lock(%ebx), %eax #endif - call __lll_mutex_unlock_wake +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_unlock_wake /* Wake up all waiters to make sure no signal gets lost. */ 2: testl %edi, %edi jnz 5f addl $cond_futex, %ebx - movl $FUTEX_WAKE, %ecx +#if FUTEX_PRIVATE_FLAG > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_futex(%ebx) + sete %cl + subl $1, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif + addl $FUTEX_WAKE, %ecx movl $SYS_futex, %eax movl $0x7fffffff, %edx ENTER_KERNEL -5: movl 20+FRAME_SIZE(%esp), %eax +5: movl 24+FRAME_SIZE(%esp), %eax call __pthread_mutex_cond_lock movl %esi, (%esp) @@ -354,4 +537,54 @@ __condvar_w_cleanup: call _Unwind_Resume hlt .LENDCODE: + cfi_endproc .size __condvar_w_cleanup, .-__condvar_w_cleanup + + + .section .gcc_except_table,"a",@progbits +.LexceptSTART: + .byte DW_EH_PE_omit # @LPStart format (omit) + .byte DW_EH_PE_omit # @TType format (omit) + .byte DW_EH_PE_sdata4 # call-site format + # DW_EH_PE_sdata4 + .uleb128 .Lcstend-.Lcstbegin +.Lcstbegin: + .long .LcleanupSTART-.LSTARTCODE + .long .Ladd_cond_futex-.LcleanupSTART + .long __condvar_w_cleanup-.LSTARTCODE + .uleb128 0 + .long .Ladd_cond_futex-.LSTARTCODE + .long .Lsub_cond_futex-.Ladd_cond_futex + .long __condvar_w_cleanup2-.LSTARTCODE + .uleb128 0 + .long .Lsub_cond_futex-.LSTARTCODE + .long .LcleanupEND-.Lsub_cond_futex + .long __condvar_w_cleanup-.LSTARTCODE + .uleb128 0 + .long .LcallUR-.LSTARTCODE + .long .LENDCODE-.LcallUR + .long 0 + .uleb128 0 +.Lcstend: + +#ifdef PIC + .section .gnu.linkonce.t.__i686.get_pc_thunk.cx,"ax",@progbits + .globl __i686.get_pc_thunk.cx + .hidden __i686.get_pc_thunk.cx + .type __i686.get_pc_thunk.cx,@function +__i686.get_pc_thunk.cx: + movl (%esp), %ecx; + ret + .size __i686.get_pc_thunk.cx,.-__i686.get_pc_thunk.cx +#endif + +#ifdef SHARED + .hidden DW.ref.__gcc_personality_v0 + .weak DW.ref.__gcc_personality_v0 + .section .gnu.linkonce.d.DW.ref.__gcc_personality_v0,"aw",@progbits + .align 4 + .type DW.ref.__gcc_personality_v0, @object + .size DW.ref.__gcc_personality_v0, 4 +DW.ref.__gcc_personality_v0: + .long __gcc_personality_v0 +#endif diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S index aec79f07e..d181393e6 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -18,19 +18,10 @@ 02111-1307 USA. */ #include <sysdep.h> +#include <lowlevellock.h> #include <lowlevelrwlock.h> #include <pthread-errnos.h> -#include <tcb-offsets.h> - - -#define FUTEX_WAIT 0 -#define FUTEX_WAKE 1 - -#ifndef UP -# define LOCK lock -#else -# define LOCK -#endif +#include <bits/kernel-features.h> .text @@ -39,8 +30,13 @@ .type __pthread_rwlock_rdlock,@function .align 16 __pthread_rwlock_rdlock: + 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 @@ -61,7 +57,7 @@ __pthread_rwlock_rdlock: jne 14f cmpl $0, WRITERS_QUEUED(%ebx) je 5f - cmpl $0, FLAGS(%ebx) + cmpb $0, FLAGS(%ebx) je 5f 3: addl $1, READERS_QUEUED(%ebx) @@ -77,8 +73,18 @@ __pthread_rwlock_rdlock: #endif jne 10f -11: addl $READERS_WAKEUP, %ebx - movl %esi, %ecx /* movl $FUTEX_WAIT, %ecx */ +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 $READERS_WAKEUP, %ebx movl $SYS_futex, %eax ENTER_KERNEL @@ -98,7 +104,7 @@ __pthread_rwlock_rdlock: 13: subl $1, READERS_QUEUED(%ebx) jmp 2b -5: xorl %ecx, %ecx +5: xorl %edx, %edx addl $1, NR_READERS(%ebx) je 8f 9: LOCK @@ -110,24 +116,32 @@ __pthread_rwlock_rdlock: jne 6f 7: - movl %ecx, %eax + 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, %ecx + movl %ebx, %edx #else - leal MUTEX(%ebx), %ecx + leal MUTEX(%ebx), %edx #endif - call __lll_mutex_lock_wait + movzbl PSHARED(%ebx), %ecx + call __lll_lock_wait jmp 2b 14: cmpl %gs:TID, %eax jne 3b /* Deadlock detected. */ - movl $EDEADLK, %ecx + movl $EDEADLK, %edx jmp 9b 6: @@ -136,17 +150,18 @@ __pthread_rwlock_rdlock: #else leal MUTEX(%ebx), %eax #endif - call __lll_mutex_unlock_wake + movzbl PSHARED(%ebx), %ecx + call __lll_unlock_wake jmp 7b /* Overflow. */ 8: subl $1, NR_READERS(%ebx) - movl $EAGAIN, %ecx + movl $EAGAIN, %edx jmp 9b /* Overflow. */ 4: subl $1, READERS_QUEUED(%ebx) - movl $EAGAIN, %ecx + movl $EAGAIN, %edx jmp 9b 10: @@ -155,17 +170,20 @@ __pthread_rwlock_rdlock: #else leal MUTEX(%ebx), %eax #endif - call __lll_mutex_unlock_wake + movzbl PSHARED(%ebx), %ecx + call __lll_unlock_wake jmp 11b 12: #if MUTEX == 0 - movl %ebx, %ecx + movl %ebx, %edx #else - leal MUTEX(%ebx), %ecx + leal MUTEX(%ebx), %edx #endif - call __lll_mutex_lock_wait + movzbl PSHARED(%ebx), %ecx + call __lll_lock_wait jmp 13b + cfi_endproc .size __pthread_rwlock_rdlock,.-__pthread_rwlock_rdlock .globl pthread_rwlock_rdlock diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedrdlock.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedrdlock.S index 3717d7ef5..1ffdf33fe 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedrdlock.S +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedrdlock.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -18,19 +18,10 @@ 02111-1307 USA. */ #include <sysdep.h> +#include <lowlevellock.h> #include <lowlevelrwlock.h> #include <pthread-errnos.h> -#include <tcb-offsets.h> - - -#define FUTEX_WAIT 0 -#define FUTEX_WAKE 1 - -#ifndef UP -# define LOCK lock -#else -# define LOCK -#endif +#include <bits/kernel-features.h> .text @@ -39,11 +30,21 @@ .type pthread_rwlock_timedrdlock,@function .align 16 pthread_rwlock_timedrdlock: + 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 @@ -64,7 +65,7 @@ pthread_rwlock_timedrdlock: jne 14f cmpl $0, WRITERS_QUEUED(%ebp) je 5f - cmpl $0, FLAGS(%ebp) + cmpb $0, FLAGS(%ebp) je 5f /* Check the value of the timeout parameter. */ @@ -87,7 +88,7 @@ pthread_rwlock_timedrdlock: /* Get current time. */ 11: movl %esp, %ebx xorl %ecx, %ecx - movl $SYS_gettimeofday, %eax + movl $__NR_gettimeofday, %eax ENTER_KERNEL /* Compute relative timeout. */ @@ -107,13 +108,23 @@ pthread_rwlock_timedrdlock: /* Futex call. */ movl %ecx, (%esp) /* Store relative timeout. */ movl %edx, 4(%esp) + movl %esi, %edx - xorl %ecx, %ecx /* movl $FUTEX_WAIT, %ecx */ +#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 READERS_WAKEUP(%ebp), %ebx movl $SYS_futex, %eax ENTER_KERNEL - movl %eax, %ecx + movl %eax, %esi 17: /* Reget the lock. */ @@ -128,14 +139,14 @@ pthread_rwlock_timedrdlock: jnz 12f 13: subl $1, READERS_QUEUED(%ebp) - cmpl $-ETIMEDOUT, %ecx + cmpl $-ETIMEDOUT, %esi jne 2b -18: movl $ETIMEDOUT, %ecx +18: movl $ETIMEDOUT, %edx jmp 9f -5: xorl %ecx, %ecx +5: xorl %edx, %edx addl $1, NR_READERS(%ebp) je 8f 9: LOCK @@ -146,27 +157,42 @@ pthread_rwlock_timedrdlock: #endif jne 6f -7: movl %ecx, %eax +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, %ecx + movl %ebp, %edx #else - leal MUTEX(%ebp), %ecx + leal MUTEX(%ebp), %edx #endif - call __lll_mutex_lock_wait + movzbl PSHARED(%ebp), %ecx + call __lll_lock_wait jmp 2b 14: cmpl %gs:TID, %eax jne 3b - movl $EDEADLK, %ecx + movl $EDEADLK, %edx jmp 9b 6: @@ -175,17 +201,18 @@ pthread_rwlock_timedrdlock: #else leal MUTEX(%ebp), %eax #endif - call __lll_mutex_unlock_wake + movzbl PSHARED(%ebp), %ecx + call __lll_unlock_wake jmp 7b /* Overflow. */ 8: subl $1, NR_READERS(%ebp) - movl $EAGAIN, %ecx + movl $EAGAIN, %edx jmp 9b /* Overflow. */ 4: subl $1, READERS_QUEUED(%ebp) - movl $EAGAIN, %ecx + movl $EAGAIN, %edx jmp 9b 10: @@ -194,21 +221,24 @@ pthread_rwlock_timedrdlock: #else leal MUTEX(%ebp), %eax #endif - call __lll_mutex_unlock_wake + movzbl PSHARED(%ebp), %ecx + call __lll_unlock_wake jmp 11b 12: #if MUTEX == 0 - movl %ebp, %ecx + movl %ebp, %edx #else - leal MUTEX(%ebp), %ecx + leal MUTEX(%ebp), %edx #endif - call __lll_mutex_lock_wait + movzbl PSHARED(%ebp), %ecx + call __lll_lock_wait jmp 13b -16: movl $-ETIMEDOUT, %ecx +16: movl $-ETIMEDOUT, %esi jmp 17b -19: movl $EINVAL, %ecx +19: movl $EINVAL, %edx jmp 9b + cfi_endproc .size pthread_rwlock_timedrdlock,.-pthread_rwlock_timedrdlock diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedwrlock.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedwrlock.S index 09c9e30ca..5826f02e6 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedwrlock.S +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedwrlock.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -18,19 +18,10 @@ 02111-1307 USA. */ #include <sysdep.h> +#include <lowlevellock.h> #include <lowlevelrwlock.h> #include <pthread-errnos.h> -#include <tcb-offsets.h> - - -#define FUTEX_WAIT 0 -#define FUTEX_WAKE 1 - -#ifndef UP -# define LOCK lock -#else -# define LOCK -#endif +#include <bits/kernel-features.h> .text @@ -39,11 +30,21 @@ .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 @@ -85,7 +86,7 @@ pthread_rwlock_timedwrlock: /* Get current time. */ 11: movl %esp, %ebx xorl %ecx, %ecx - movl $SYS_gettimeofday, %eax + movl $__NR_gettimeofday, %eax ENTER_KERNEL /* Compute relative timeout. */ @@ -105,13 +106,23 @@ pthread_rwlock_timedwrlock: /* Futex call. */ movl %ecx, (%esp) /* Store relative timeout. */ movl %edx, 4(%esp) + movl %esi, %edx - xorl %ecx, %ecx /* movl $FUTEX_WAIT, %ecx */ +#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, %ecx + movl %eax, %esi 17: /* Reget the lock. */ @@ -126,14 +137,14 @@ pthread_rwlock_timedwrlock: jnz 12f 13: subl $1, WRITERS_QUEUED(%ebp) - cmpl $-ETIMEDOUT, %ecx + cmpl $-ETIMEDOUT, %esi jne 2b -18: movl $ETIMEDOUT, %ecx +18: movl $ETIMEDOUT, %edx jmp 9f -5: xorl %ecx, %ecx +5: xorl %edx, %edx movl %gs:TID, %eax movl %eax, WRITER(%ebp) 9: LOCK @@ -144,27 +155,42 @@ pthread_rwlock_timedwrlock: #endif jne 6f -7: movl %ecx, %eax +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, %ecx + movl %ebp, %edx #else - leal MUTEX(%ebp), %ecx + leal MUTEX(%ebp), %edx #endif - call __lll_mutex_lock_wait + movzbl PSHARED(%ebp), %ecx + call __lll_lock_wait jmp 2b 14: cmpl %gs:TID, %eax jne 3b -20: movl $EDEADLK, %ecx +20: movl $EDEADLK, %edx jmp 9b 6: @@ -173,12 +199,13 @@ pthread_rwlock_timedwrlock: #else leal MUTEX(%ebp), %eax #endif - call __lll_mutex_unlock_wake + movzbl PSHARED(%ebp), %ecx + call __lll_unlock_wake jmp 7b /* Overflow. */ 4: subl $1, WRITERS_QUEUED(%ebp) - movl $EAGAIN, %ecx + movl $EAGAIN, %edx jmp 9b 10: @@ -187,21 +214,24 @@ pthread_rwlock_timedwrlock: #else leal MUTEX(%ebp), %eax #endif - call __lll_mutex_unlock_wake + movzbl PSHARED(%ebp), %ecx + call __lll_unlock_wake jmp 11b 12: #if MUTEX == 0 - movl %ebp, %ecx + movl %ebp, %edx #else - leal MUTEX(%ebp), %ecx + leal MUTEX(%ebp), %edx #endif - call __lll_mutex_lock_wait + movzbl PSHARED(%ebp), %ecx + call __lll_lock_wait jmp 13b -16: movl $-ETIMEDOUT, %ecx +16: movl $-ETIMEDOUT, %esi jmp 17b -19: movl $EINVAL, %ecx +19: movl $EINVAL, %edx jmp 9b + cfi_endproc .size pthread_rwlock_timedwrlock,.-pthread_rwlock_timedwrlock diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_unlock.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_unlock.S index 597c82fa8..0130261c7 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_unlock.S +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_unlock.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -18,17 +18,9 @@ 02111-1307 USA. */ #include <sysdep.h> +#include <lowlevellock.h> #include <lowlevelrwlock.h> - - -#define FUTEX_WAIT 0 -#define FUTEX_WAKE 1 - -#ifndef UP -# define LOCK lock -#else -# define LOCK -#endif +#include <bits/kernel-features.h> .text @@ -37,8 +29,13 @@ .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 @@ -60,9 +57,8 @@ __pthread_rwlock_unlock: 5: movl $0, WRITER(%edi) - movl $1, %ecx + movl $1, %edx leal WRITERS_WAKEUP(%edi), %ebx - movl %ecx, %edx cmpl $0, WRITERS_QUEUED(%edi) jne 0f @@ -82,14 +78,30 @@ __pthread_rwlock_unlock: #endif jne 7f -8: movl $SYS_futex, %eax +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 @@ -106,31 +118,34 @@ __pthread_rwlock_unlock: 1: #if MUTEX == 0 - movl %edi, %ecx + movl %edi, %edx #else - leal MUTEX(%edx), %ecx + leal MUTEX(%edi), %edx #endif - call __lll_mutex_lock_wait + movzbl PSHARED(%edi), %ecx + call __lll_lock_wait jmp 2b 3: #if MUTEX == 0 movl %edi, %eax #else - leal MUTEX(%edx), %eax + leal MUTEX(%edi), %eax #endif - call __lll_mutex_unlock_wake + movzbl PSHARED(%edi), %ecx + call __lll_unlock_wake jmp 4b 7: #if MUTEX == 0 movl %edi, %eax #else - leal MUTEX(%edx), %eax + leal MUTEX(%edi), %eax #endif - call __lll_mutex_unlock_wake + movzbl PSHARED(%edi), %ecx + call __lll_unlock_wake jmp 8b - + cfi_endproc .size __pthread_rwlock_unlock,.-__pthread_rwlock_unlock .globl pthread_rwlock_unlock diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_wrlock.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_wrlock.S index bb384a267..f69c49b15 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_wrlock.S +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_wrlock.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -18,18 +18,10 @@ 02111-1307 USA. */ #include <sysdep.h> +#include <lowlevellock.h> #include <lowlevelrwlock.h> #include <pthread-errnos.h> -#include <tcb-offsets.h> - -#define FUTEX_WAIT 0 -#define FUTEX_WAKE 1 - -#ifndef UP -# define LOCK lock -#else -# define LOCK -#endif +#include <bits/kernel-features.h> .text @@ -38,8 +30,13 @@ .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 @@ -74,8 +71,18 @@ __pthread_rwlock_wrlock: #endif jne 10f -11: addl $WRITERS_WAKEUP, %ebx - movl %esi, %ecx /* movl $FUTEX_WAIT, %ecx */ +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 @@ -95,7 +102,7 @@ __pthread_rwlock_wrlock: 13: subl $1, WRITERS_QUEUED(%ebx) jmp 2b -5: xorl %ecx, %ecx +5: xorl %edx, %edx movl %gs:TID, %eax movl %eax, WRITER(%ebx) 9: LOCK @@ -107,23 +114,31 @@ __pthread_rwlock_wrlock: jne 6f 7: - movl %ecx, %eax + 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, %ecx + movl %ebx, %edx #else - leal MUTEX(%ebx), %ecx + leal MUTEX(%ebx), %edx #endif - call __lll_mutex_lock_wait + movzbl PSHARED(%ebx), %ecx + call __lll_lock_wait jmp 2b 14: cmpl %gs:TID , %eax jne 3b - movl $EDEADLK, %ecx + movl $EDEADLK, %edx jmp 9b 6: @@ -132,11 +147,12 @@ __pthread_rwlock_wrlock: #else leal MUTEX(%ebx), %eax #endif - call __lll_mutex_unlock_wake + movzbl PSHARED(%ebx), %ecx + call __lll_unlock_wake jmp 7b 4: subl $1, WRITERS_QUEUED(%ebx) - movl $EAGAIN, %ecx + movl $EAGAIN, %edx jmp 9b 10: @@ -145,17 +161,20 @@ __pthread_rwlock_wrlock: #else leal MUTEX(%ebx), %eax #endif - call __lll_mutex_unlock_wake + movzbl PSHARED(%ebx), %ecx + call __lll_unlock_wake jmp 11b 12: #if MUTEX == 0 - movl %ebx, %ecx + movl %ebx, %edx #else - leal MUTEX(%ebx), %ecx + leal MUTEX(%ebx), %edx #endif - call __lll_mutex_lock_wait + movzbl PSHARED(%ebx), %ecx + call __lll_lock_wait jmp 13b + cfi_endproc .size __pthread_rwlock_wrlock,.-__pthread_rwlock_wrlock .globl pthread_rwlock_wrlock diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S index a0dc39c8f..b077a20ca 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003, 2005, 2007, 2008 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -19,15 +19,8 @@ #include <sysdep.h> #include <pthread-errnos.h> -#include <tls.h> - -#ifndef UP -# define LOCK lock -#else -# define -#endif - -#define FUTEX_WAKE 1 +#include <structsem.h> +#include <lowlevellock.h> .text @@ -36,25 +29,49 @@ .type __new_sem_post,@function .align 16 __new_sem_post: + cfi_startproc pushl %ebx + cfi_adjust_cfa_offset(4) + cfi_offset(%ebx, -8) movl 8(%esp), %ebx - movl $1, %edx + +#if VALUE == 0 + movl (%ebx), %eax +#else + movl VALUE(%ebx), %eax +#endif +0: cmpl $SEM_VALUE_MAX, %eax + je 3f + leal 1(%eax), %edx LOCK - xaddl %edx, (%ebx) +#if VALUE == 0 + cmpxchgl %edx, (%ebx) +#else + cmpxchgl %edx, VALUE(%ebx) +#endif + jnz 0b + + cmpl $0, NWAITERS(%ebx) + je 2f - movl $SYS_futex, %eax movl $FUTEX_WAKE, %ecx - addl $1, %edx + orl PRIVATE(%ebx), %ecx + movl $1, %edx + movl $SYS_futex, %eax ENTER_KERNEL testl %eax, %eax js 1f - xorl %eax, %eax +2: xorl %eax, %eax popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) ret + cfi_adjust_cfa_offset(4) + cfi_offset(%ebx, -8) 1: #ifdef __PIC__ call __x86.get_pc_thunk.bx @@ -80,6 +97,35 @@ __new_sem_post: orl $-1, %eax popl %ebx ret + +3: +#ifdef __PIC__ + call __x86.get_pc_thunk.bx +#else + movl $5f, %ebx +5: +#endif + addl $_GLOBAL_OFFSET_TABLE_, %ebx +#if USE___THREAD +# ifdef NO_TLS_DIRECT_SEG_REFS + movl errno@gotntpoff(%ebx), %edx + addl %gs:0, %edx + movl $EOVERFLOW, (%edx) +# else + movl errno@gotntpoff(%ebx), %edx + movl $EOVERFLOW, %gs:(%edx) +# endif +#else + call __errno_location@plt + movl $EOVERFLOW, (%eax) +#endif + + orl $-1, %eax + popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + ret + cfi_endproc .size __new_sem_post,.-__new_sem_post weak_alias(__new_sem_post, sem_post) diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S index 972b49fac..218b12f9c 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003, 2004, 2005, 2007, 2009 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -19,15 +19,13 @@ #include <sysdep.h> #include <pthread-errnos.h> -#include <tcb-offsets.h> +#include <structsem.h> +#include <lowlevellock.h> -#ifndef UP -# define LOCK lock -#else -# define -#endif -#define FUTEX_WAKE 1 +#if VALUE != 0 +# error "code needs to be rewritten for VALUE != 0" +#endif .text @@ -35,55 +33,46 @@ .globl sem_timedwait .type sem_timedwait,@function .align 16 - cfi_startproc sem_timedwait: - /* First check for cancellation. */ - movl %gs:CANCELHANDLING, %eax - andl $0xfffffff9, %eax - cmpl $8, %eax - je 10f - +.LSTARTCODE: movl 4(%esp), %ecx movl (%ecx), %eax 2: testl %eax, %eax - je,pn 1f + je 1f leal -1(%eax), %edx LOCK cmpxchgl %edx, (%ecx) - jne,pn 2b + jne 2b xorl %eax, %eax ret /* Check whether the timeout value is valid. */ 1: pushl %esi - cfi_adjust_cfa_offset(4) +.Lpush_esi: pushl %edi - cfi_adjust_cfa_offset(4) +.Lpush_edi: pushl %ebx - cfi_adjust_cfa_offset(4) +.Lpush_ebx: subl $12, %esp - cfi_adjust_cfa_offset(12) +.Lsub_esp: movl 32(%esp), %edi - cfi_offset(7, -12) /* %edi */ /* Check for invalid nanosecond field. */ cmpl $1000000000, 4(%edi) movl $EINVAL, %esi - cfi_offset(6, -8) /* %esi */ jae 6f - cfi_offset(3, -16) /* %ebx */ -7: call __pthread_enable_asynccancel - movl %eax, 8(%esp) + LOCK + incl NWAITERS(%ecx) - xorl %ecx, %ecx +7: xorl %ecx, %ecx movl %esp, %ebx movl %ecx, %edx - movl $SYS_gettimeofday, %eax + movl $__NR_gettimeofday, %eax ENTER_KERNEL /* Compute relative timeout. */ @@ -103,19 +92,30 @@ sem_timedwait: movl %ecx, (%esp) /* Store relative timeout. */ movl %edx, 4(%esp) - movl 28(%esp), %ebx - xorl %ecx, %ecx + +.LcleanupSTART: + call __pthread_enable_asynccancel + movl %eax, 8(%esp) + + movl 28(%esp), %ebx /* Load semaphore address. */ +#if FUTEX_WAIT == 0 + movl PRIVATE(%ebx), %ecx +#else + movl $FUTEX_WAIT, %ecx + orl PRIVATE(%ebx), %ecx +#endif movl %esp, %esi - movl $SYS_futex, %eax xorl %edx, %edx + movl $SYS_futex, %eax ENTER_KERNEL movl %eax, %esi movl 8(%esp), %eax call __pthread_disable_asynccancel +.LcleanupEND: testl %esi, %esi - je,pt 9f + je 9f cmpl $-EWOULDBLOCK, %esi jne 3f @@ -126,29 +126,27 @@ sem_timedwait: leal -1(%eax), %ecx LOCK cmpxchgl %ecx, (%ebx) - jne,pn 8b + jne 8b - addl $12, %esp - cfi_adjust_cfa_offset(-12) xorl %eax, %eax + + LOCK + decl NWAITERS(%ebx) + +10: addl $12, %esp +.Ladd_esp: popl %ebx - cfi_adjust_cfa_offset(-4) - cfi_restore(3) +.Lpop_ebx: popl %edi - cfi_adjust_cfa_offset(-4) - cfi_restore(7) +.Lpop_edi: popl %esi - cfi_adjust_cfa_offset(-4) - cfi_restore(6) +.Lpop_esi: ret - cfi_adjust_cfa_offset(24) - cfi_offset(6, -8) /* %esi */ - cfi_offset(7, -12) /* %edi */ - cfi_offset(3, -16) /* %ebx */ +.Lafter_ret: 3: negl %esi 6: -#ifdef __PIC__ +#ifdef PIC call __x86.get_pc_thunk.bx #else movl $4f, %ebx @@ -169,25 +167,163 @@ sem_timedwait: movl %esi, (%eax) #endif - addl $12, %esp - cfi_adjust_cfa_offset(-12) + movl 28(%esp), %ebx /* Load semaphore address. */ orl $-1, %eax - popl %ebx - cfi_adjust_cfa_offset(-4) - cfi_restore(3) - popl %edi - cfi_adjust_cfa_offset(-4) - cfi_restore(7) - popl %esi - cfi_adjust_cfa_offset(-4) - cfi_restore(6) - ret + jmp 10b + .size sem_timedwait,.-sem_timedwait + -10: /* Canceled. */ - movl $0xffffffff, %gs:RESULT + .type sem_wait_cleanup,@function +sem_wait_cleanup: LOCK - orl $0x10, %gs:CANCELHANDLING - movl %gs:CLEANUP_JMP_BUF, %eax - jmp HIDDEN_JUMPTARGET (__pthread_unwind) - cfi_endproc - .size sem_timedwait,.-sem_timedwait + decl NWAITERS(%ebx) + movl %eax, (%esp) +.LcallUR: + call _Unwind_Resume@PLT + hlt +.LENDCODE: + .size sem_wait_cleanup,.-sem_wait_cleanup + + + .section .gcc_except_table,"a",@progbits +.LexceptSTART: + .byte 0xff # @LPStart format (omit) + .byte 0xff # @TType format (omit) + .byte 0x01 # call-site format + # DW_EH_PE_uleb128 + .uleb128 .Lcstend-.Lcstbegin +.Lcstbegin: + .uleb128 .LcleanupSTART-.LSTARTCODE + .uleb128 .LcleanupEND-.LcleanupSTART + .uleb128 sem_wait_cleanup-.LSTARTCODE + .uleb128 0 + .uleb128 .LcallUR-.LSTARTCODE + .uleb128 .LENDCODE-.LcallUR + .uleb128 0 + .uleb128 0 +.Lcstend: + + + .section .eh_frame,"a",@progbits +.LSTARTFRAME: + .long .LENDCIE-.LSTARTCIE # Length of the CIE. +.LSTARTCIE: + .long 0 # CIE ID. + .byte 1 # Version number. +#ifdef SHARED + .string "zPLR" # NUL-terminated augmentation + # string. +#else + .string "zPL" # NUL-terminated augmentation + # string. +#endif + .uleb128 1 # Code alignment factor. + .sleb128 -4 # Data alignment factor. + .byte 8 # Return address register + # column. +#ifdef SHARED + .uleb128 7 # Augmentation value length. + .byte 0x9b # Personality: DW_EH_PE_pcrel + # + DW_EH_PE_sdata4 + # + DW_EH_PE_indirect + .long DW.ref.__gcc_personality_v0-. + .byte 0x1b # LSDA Encoding: DW_EH_PE_pcrel + # + DW_EH_PE_sdata4. + .byte 0x1b # FDE Encoding: DW_EH_PE_pcrel + # + DW_EH_PE_sdata4. +#else + .uleb128 6 # Augmentation value length. + .byte 0x0 # Personality: absolute + .long __gcc_personality_v0 + .byte 0x0 # LSDA Encoding: absolute +#endif + .byte 0x0c # DW_CFA_def_cfa + .uleb128 4 + .uleb128 4 + .byte 0x88 # DW_CFA_offset, column 0x10 + .uleb128 1 + .align 4 +.LENDCIE: + + .long .LENDFDE-.LSTARTFDE # Length of the FDE. +.LSTARTFDE: + .long .LSTARTFDE-.LSTARTFRAME # CIE pointer. +#ifdef SHARED + .long .LSTARTCODE-. # PC-relative start address + # of the code. +#else + .long .LSTARTCODE # Start address of the code. +#endif + .long .LENDCODE-.LSTARTCODE # Length of the code. + .uleb128 4 # Augmentation size +#ifdef SHARED + .long .LexceptSTART-. +#else + .long .LexceptSTART +#endif + + .byte 4 # DW_CFA_advance_loc4 + .long .Lpush_esi-.LSTARTCODE + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 8 + .byte 0x86 # DW_CFA_offset %esi + .uleb128 2 + .byte 4 # DW_CFA_advance_loc4 + .long .Lpush_edi-.Lpush_esi + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 12 + .byte 0x87 # DW_CFA_offset %edi + .uleb128 3 + .byte 4 # DW_CFA_advance_loc4 + .long .Lpush_ebx-.Lpush_edi + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 16 + .byte 0x83 # DW_CFA_offset %ebx + .uleb128 4 + .byte 4 # DW_CFA_advance_loc4 + .long .Lsub_esp-.Lpush_ebx + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 28 + .byte 4 # DW_CFA_advance_loc4 + .long .Ladd_esp-.Lsub_esp + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 16 + .byte 4 # DW_CFA_advance_loc4 + .long .Lpop_ebx-.Ladd_esp + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 12 + .byte 0xc3 # DW_CFA_restore %ebx + .byte 4 # DW_CFA_advance_loc4 + .long .Lpop_edi-.Lpop_ebx + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 8 + .byte 0xc7 # DW_CFA_restore %edi + .byte 4 # DW_CFA_advance_loc4 + .long .Lpop_esi-.Lpop_edi + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 4 + .byte 0xc6 # DW_CFA_restore %esi + .byte 4 # DW_CFA_advance_loc4 + .long .Lafter_ret-.Lpop_esi + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 28 + .byte 0x86 # DW_CFA_offset %esi + .uleb128 2 + .byte 0x87 # DW_CFA_offset %edi + .uleb128 3 + .byte 0x83 # DW_CFA_offset %ebx + .uleb128 4 + .align 4 +.LENDFDE: + + +#ifdef SHARED + .hidden DW.ref.__gcc_personality_v0 + .weak DW.ref.__gcc_personality_v0 + .section .gnu.linkonce.d.DW.ref.__gcc_personality_v0,"aw",@progbits + .align 4 + .type DW.ref.__gcc_personality_v0, @object + .size DW.ref.__gcc_personality_v0, 4 +DW.ref.__gcc_personality_v0: + .long __gcc_personality_v0 +#endif diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_trywait.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_trywait.S index 7db64820f..dad96858f 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_trywait.S +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_trywait.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003, 2005, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -19,13 +19,7 @@ #include <sysdep.h> #include <pthread-errnos.h> -#include <tls.h> - -#ifndef UP -# define LOCK lock -#else -# define -#endif +#include <lowlevellock.h> .text @@ -42,7 +36,7 @@ __new_sem_trywait: leal -1(%eax), %edx LOCK cmpxchgl %edx, (%ecx) - jne,pn 2b + jne 2b xorl %eax, %eax ret diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_wait.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_wait.S index c3e6cbce6..b1c32ee4d 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_wait.S +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_wait.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003, 2005, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -19,86 +19,98 @@ #include <sysdep.h> #include <pthread-errnos.h> -#include <tcb-offsets.h> -#include <tls.h> +#include <structsem.h> +#include <lowlevellock.h> -#ifndef UP -# define LOCK lock -#else -# define -#endif - -#define FUTEX_WAKE 1 +#if VALUE != 0 +# error "code needs to be rewritten for VALUE != 0" +#endif .text .globl __new_sem_wait .type __new_sem_wait,@function .align 16 - cfi_startproc __new_sem_wait: - /* First check for cancellation. */ - movl %gs:CANCELHANDLING, %eax - andl $0xfffffff9, %eax - cmpl $8, %eax - je 5f - +.LSTARTCODE: pushl %ebx - cfi_adjust_cfa_offset(4) +.Lpush_ebx: pushl %esi - cfi_adjust_cfa_offset(4) +.Lpush_esi: subl $4, %esp - cfi_adjust_cfa_offset(4) +.Lsub_esp: movl 16(%esp), %ebx - cfi_offset(3, -8) /* %ebx */ - cfi_offset(6, -12) /* %esi */ -3: movl (%ebx), %eax + movl (%ebx), %eax 2: testl %eax, %eax - je,pn 1f + je 1f leal -1(%eax), %edx LOCK cmpxchgl %edx, (%ebx) - jne,pn 2b - xorl %eax, %eax + jne 2b +7: xorl %eax, %eax - movl 4(%esp), %esi - cfi_restore(6) +9: movl 4(%esp), %esi movl 8(%esp), %ebx - cfi_restore(3) addl $12, %esp - cfi_adjust_cfa_offset(-12) +.Ladd_esp: ret - cfi_adjust_cfa_offset(8) - cfi_offset(3, -8) /* %ebx */ - cfi_offset(6, -12) /* %esi */ -1: call __pthread_enable_asynccancel +.Lafter_ret: +1: LOCK + incl NWAITERS(%ebx) + +.LcleanupSTART: +6: call __pthread_enable_asynccancel movl %eax, (%esp) +#if FUTEX_WAIT == 0 + movl PRIVATE(%ebx), %ecx +#else + movl $FUTEX_WAIT, %ecx + orl PRIVATE(%ebx), %ecx +#endif xorl %esi, %esi + xorl %edx, %edx movl $SYS_futex, %eax - movl %esi, %ecx - movl %esi, %edx ENTER_KERNEL movl %eax, %esi movl (%esp), %eax call __pthread_disable_asynccancel +.LcleanupEND: testl %esi, %esi - je 3b + je 3f cmpl $-EWOULDBLOCK, %esi - je 3b + jne 4f + +3: + movl (%ebx), %eax +5: testl %eax, %eax + je 6b + + leal -1(%eax), %edx + LOCK + cmpxchgl %edx, (%ebx) + jne 5b + + LOCK + decl NWAITERS(%ebx) + jmp 7b + +4: LOCK + decl NWAITERS(%ebx) + negl %esi #ifdef __PIC__ call __x86.get_pc_thunk.bx #else - movl $4f, %ebx -4: + movl $8f, %ebx +8: #endif addl $_GLOBAL_OFFSET_TABLE_, %ebx #if USE___THREAD @@ -115,20 +127,143 @@ __new_sem_wait: movl %esi, (%eax) #endif orl $-1, %eax - movl 4(%esp), %esi - cfi_restore(6) - movl 8(%esp), %ebx - cfi_restore(3) - addl $12, %esp - cfi_adjust_cfa_offset(-12) - ret -5: /* Canceled. */ - movl $0xffffffff, %gs:RESULT - LOCK - orl $0x10, %gs:CANCELHANDLING - movl %gs:CLEANUP_JMP_BUF, %eax - jmp HIDDEN_JUMPTARGET (__pthread_unwind) - cfi_endproc + jmp 9b .size __new_sem_wait,.-__new_sem_wait weak_alias(__new_sem_wait, sem_wait) + + + .type sem_wait_cleanup,@function +sem_wait_cleanup: + LOCK + decl NWAITERS(%ebx) + movl %eax, (%esp) +.LcallUR: + call _Unwind_Resume@PLT + hlt +.LENDCODE: + .size sem_wait_cleanup,.-sem_wait_cleanup + + + .section .gcc_except_table,"a",@progbits +.LexceptSTART: + .byte 0xff # @LPStart format (omit) + .byte 0xff # @TType format (omit) + .byte 0x01 # call-site format + # DW_EH_PE_uleb128 + .uleb128 .Lcstend-.Lcstbegin +.Lcstbegin: + .uleb128 .LcleanupSTART-.LSTARTCODE + .uleb128 .LcleanupEND-.LcleanupSTART + .uleb128 sem_wait_cleanup-.LSTARTCODE + .uleb128 0 + .uleb128 .LcallUR-.LSTARTCODE + .uleb128 .LENDCODE-.LcallUR + .uleb128 0 + .uleb128 0 +.Lcstend: + + + .section .eh_frame,"a",@progbits +.LSTARTFRAME: + .long .LENDCIE-.LSTARTCIE # Length of the CIE. +.LSTARTCIE: + .long 0 # CIE ID. + .byte 1 # Version number. +#ifdef SHARED + .string "zPLR" # NUL-terminated augmentation + # string. +#else + .string "zPL" # NUL-terminated augmentation + # string. +#endif + .uleb128 1 # Code alignment factor. + .sleb128 -4 # Data alignment factor. + .byte 8 # Return address register + # column. +#ifdef SHARED + .uleb128 7 # Augmentation value length. + .byte 0x9b # Personality: DW_EH_PE_pcrel + # + DW_EH_PE_sdata4 + # + DW_EH_PE_indirect + .long DW.ref.__gcc_personality_v0-. + .byte 0x1b # LSDA Encoding: DW_EH_PE_pcrel + # + DW_EH_PE_sdata4. + .byte 0x1b # FDE Encoding: DW_EH_PE_pcrel + # + DW_EH_PE_sdata4. +#else + .uleb128 6 # Augmentation value length. + .byte 0x0 # Personality: absolute + .long __gcc_personality_v0 + .byte 0x0 # LSDA Encoding: absolute +#endif + .byte 0x0c # DW_CFA_def_cfa + .uleb128 4 + .uleb128 4 + .byte 0x88 # DW_CFA_offset, column 0x10 + .uleb128 1 + .align 4 +.LENDCIE: + + .long .LENDFDE-.LSTARTFDE # Length of the FDE. +.LSTARTFDE: + .long .LSTARTFDE-.LSTARTFRAME # CIE pointer. +#ifdef SHARED + .long .LSTARTCODE-. # PC-relative start address + # of the code. +#else + .long .LSTARTCODE # Start address of the code. +#endif + .long .LENDCODE-.LSTARTCODE # Length of the code. + .uleb128 4 # Augmentation size +#ifdef SHARED + .long .LexceptSTART-. +#else + .long .LexceptSTART +#endif + + .byte 4 # DW_CFA_advance_loc4 + .long .Lpush_ebx-.LSTARTCODE + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 8 + .byte 0x83 # DW_CFA_offset %ebx + .uleb128 2 + .byte 4 # DW_CFA_advance_loc4 + .long .Lpush_esi-.Lpush_ebx + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 12 + .byte 0x86 # DW_CFA_offset %esi + .uleb128 3 + .byte 4 # DW_CFA_advance_loc4 + .long .Lsub_esp-.Lpush_esi + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 16 + .byte 4 # DW_CFA_advance_loc4 + .long .Ladd_esp-.Lsub_esp + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 4 + .byte 0xc3 # DW_CFA_restore %ebx + .byte 0xc6 # DW_CFA_restore %esi + .byte 4 # DW_CFA_advance_loc4 + .long .Lafter_ret-.Ladd_esp + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 16 + .byte 0x83 # DW_CFA_offset %ebx + .uleb128 2 + .byte 0x86 # DW_CFA_offset %esi + .uleb128 3 + .align 4 +.LENDFDE: + + +#ifdef SHARED + .hidden DW.ref.__gcc_personality_v0 + .weak DW.ref.__gcc_personality_v0 + .section .gnu.linkonce.d.DW.ref.__gcc_personality_v0,"aw",@progbits + .align 4 + .type DW.ref.__gcc_personality_v0, @object + .size DW.ref.__gcc_personality_v0, 4 +DW.ref.__gcc_personality_v0: + .long __gcc_personality_v0 +#endif + |