diff options
Diffstat (limited to 'sysdeps/mach/i386/machine-lock.h')
| -rw-r--r-- | sysdeps/mach/i386/machine-lock.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/sysdeps/mach/i386/machine-lock.h b/sysdeps/mach/i386/machine-lock.h index d786628170..33602f43a7 100644 --- a/sysdeps/mach/i386/machine-lock.h +++ b/sysdeps/mach/i386/machine-lock.h @@ -1,5 +1,5 @@ /* Machine-specific definition for spin locks. i386 version. - Copyright (C) 1994, 1997, 2007 Free Software Foundation, Inc. + Copyright (C) 1994,1997,2007,2008 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -40,7 +40,8 @@ __spin_unlock (__spin_lock_t *__lock) { register int __unlocked; __asm__ __volatile ("xchgl %0, %1" - : "=&r" (__unlocked), "=m" (*__lock) : "0" (0)); + : "=&r" (__unlocked), "=m" (*__lock) : "0" (0) + : "memory"); } /* Try to lock LOCK; return nonzero if we locked it, zero if another has. */ @@ -50,7 +51,8 @@ __spin_try_lock (__spin_lock_t *__lock) { register int __locked; __asm__ __volatile ("xchgl %0, %1" - : "=&r" (__locked), "=m" (*__lock) : "0" (1)); + : "=&r" (__locked), "=m" (*__lock) : "0" (1) + : "memory"); return !__locked; } |