diff options
| author | Austin Foxley <austinf@cetoncorp.com> | 2010-02-16 12:27:18 -0800 |
|---|---|---|
| committer | Austin Foxley <austinf@cetoncorp.com> | 2010-02-16 12:27:18 -0800 |
| commit | a032a6587011cbdac8c2f7e11f15dc4e592bbb55 (patch) | |
| tree | b8d8dfc6abf0168e098223c2134a3e4bd7640942 /libpthread/nptl/sysdeps/unix/sysv/linux/i386/pthread_once.S | |
| parent | 70f1d42b13a741f603472f405299e5d2938aa728 (diff) | |
mass sync with glibc nptl
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
Diffstat (limited to 'libpthread/nptl/sysdeps/unix/sysv/linux/i386/pthread_once.S')
| -rw-r--r-- | libpthread/nptl/sysdeps/unix/sysv/linux/i386/pthread_once.S | 32 |
1 files changed, 23 insertions, 9 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/pthread_once.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/pthread_once.S index 5ab2c5856..9a3b36303 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/pthread_once.S +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/pthread_once.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. @@ -19,14 +19,9 @@ #include <unwindbuf.h> #include <sysdep.h> +#include <bits/kernel-features.h> +#include <lowlevellock.h> -#ifndef UP -# define LOCK lock -#else -# define LOCK -#endif - -#define FUTEX_WAKE 1 .comm __fork_generation, 4, 4 @@ -89,7 +84,16 @@ __pthread_once: jnz 3f /* Different for generation -> run initializer. */ /* Somebody else got here first. Wait. */ - movl %esi, %ecx /* movl $FUTEX_WAIT, %ecx */ +#ifdef __ASSUME_PRIVATE_FUTEX + movl $FUTEX_WAIT|FUTEX_PRIVATE_FLAG, %ecx +#else +# if FUTEX_WAIT == 0 + movl %gs:PRIVATE_FUTEX, %ecx +# else + movl $FUTEX_WAIT, %ecx + orl %gs:PRIVATE_FUTEX, %ecx +# endif +#endif movl $SYS_futex, %eax ENTER_KERNEL jmp 6b @@ -130,7 +134,12 @@ __pthread_once: /* Wake up all other threads. */ movl $0x7fffffff, %edx +#ifdef __ASSUME_PRIVATE_FUTEX + movl $FUTEX_WAKE|FUTEX_PRIVATE_FLAG, %ecx +#else movl $FUTEX_WAKE, %ecx + orl %gs:PRIVATE_FUTEX, %ecx +#endif movl $SYS_futex, %eax ENTER_KERNEL @@ -151,7 +160,12 @@ __pthread_once: movl $0, (%ebx) movl $0x7fffffff, %edx +#ifdef __ASSUME_PRIVATE_FUTEX + movl $FUTEX_WAKE|FUTEX_PRIVATE_FLAG, %ecx +#else movl $FUTEX_WAKE, %ecx + orl %gs:PRIVATE_FUTEX, %ecx +#endif movl $SYS_futex, %eax ENTER_KERNEL |