diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelrobustlock.S')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelrobustlock.S | 60 |
1 files changed, 33 insertions, 27 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelrobustlock.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelrobustlock.S index 73d8bc4ccc..7c2e1d135c 100644 --- a/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelrobustlock.S +++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelrobustlock.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003, 2004, 2006 Free Software Foundation, Inc. +/* 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. @@ -19,31 +19,36 @@ #include <sysdep.h> #include <pthread-errnos.h> +#include <lowlevellock.h> #include <lowlevelrobustlock.h> +#include <kernel-features.h> .text -#ifndef LOCK -# ifdef UP -# define LOCK -# else -# define LOCK lock -# endif -#endif - -#define SYS_gettimeofday __NR_gettimeofday -#define SYS_futex 240 -#define FUTEX_WAIT 0 -#define FUTEX_WAKE 1 #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_mutex_lock_wait - .type __lll_robust_mutex_lock_wait,@function - .hidden __lll_robust_mutex_lock_wait + .globl __lll_robust_lock_wait + .type __lll_robust_lock_wait,@function + .hidden __lll_robust_lock_wait .align 16 -__lll_robust_mutex_lock_wait: +__lll_robust_lock_wait: cfi_startproc pushl %edx cfi_adjust_cfa_offset(4) @@ -55,9 +60,9 @@ __lll_robust_mutex_lock_wait: cfi_offset(%ebx, -12) cfi_offset(%esi, -16) - movl %ecx, %ebx + movl %edx, %ebx xorl %esi, %esi /* No timeout. */ - xorl %ecx, %ecx /* movl $FUTEX_WAIT, %ecx */ + LOAD_FUTEX_WAIT (%ecx) 4: movl %eax, %edx orl $FUTEX_WAITERS, %edx @@ -98,14 +103,14 @@ __lll_robust_mutex_lock_wait: cfi_restore(%edx) ret cfi_endproc - .size __lll_robust_mutex_lock_wait,.-__lll_robust_mutex_lock_wait + .size __lll_robust_lock_wait,.-__lll_robust_lock_wait - .globl __lll_robust_mutex_timedlock_wait - .type __lll_robust_mutex_timedlock_wait,@function - .hidden __lll_robust_mutex_timedlock_wait + .globl __lll_robust_timedlock_wait + .type __lll_robust_timedlock_wait,@function + .hidden __lll_robust_timedlock_wait .align 16 -__lll_robust_mutex_timedlock_wait: +__lll_robust_timedlock_wait: cfi_startproc /* Check for a valid timeout value. */ cmpl $1000000000, 4(%edx) @@ -136,7 +141,7 @@ __lll_robust_mutex_timedlock_wait: /* Get current time. */ movl %esp, %ebx xorl %ecx, %ecx - movl $SYS_gettimeofday, %eax + movl $__NR_gettimeofday, %eax ENTER_KERNEL /* Compute relative timeout. */ @@ -177,7 +182,8 @@ __lll_robust_mutex_timedlock_wait: 2: /* Futex call. */ movl %esp, %esi - xorl %ecx, %ecx /* movl $FUTEX_WAIT, %ecx */ + movl 20(%esp), %ecx + LOAD_FUTEX_WAIT (%ecx) movl $SYS_futex, %eax ENTER_KERNEL movl %eax, %ecx @@ -224,4 +230,4 @@ __lll_robust_mutex_timedlock_wait: 8: movl $ETIMEDOUT, %eax jmp 6b cfi_endproc - .size __lll_robust_mutex_timedlock_wait,.-__lll_robust_mutex_timedlock_wait + .size __lll_robust_timedlock_wait,.-__lll_robust_timedlock_wait |