diff options
| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | i386/i386/lock.h | 6 | ||||
| -rw-r--r-- | i386/include/mach/i386/cthreads.h | 4 |
3 files changed, 12 insertions, 5 deletions
@@ -1,3 +1,10 @@ +2008-08-03 Samuel Thibault <samuel.thibault@ens-lyon.org> + + * i386/i386/lock.h (_simple_lock_xchg_, bit_lock, bit_unlock): Add + memory clobbers. + * i386/include/mach/i386/cthreads.h (spin_unlock, spin_try_lock): Add + memory clobbers. + 2008-07-23 Barry deFreese <bddebian@comcast.net> * device/chario.c (ttyinput_many): Change chars param to char *. diff --git a/i386/i386/lock.h b/i386/i386/lock.h index 2b5c4aa..38a66c8 100644 --- a/i386/i386/lock.h +++ b/i386/i386/lock.h @@ -47,7 +47,7 @@ ({ register int _old_val_; \ asm volatile("xchgl %0, %2" \ : "=r" (_old_val_) \ - : "0" (new_val), "m" (*(lock)) \ + : "0" (new_val), "m" (*(lock) : "memory") \ ); \ _old_val_; \ }) @@ -81,7 +81,7 @@ btsl %0, %1 \n\ jb 0b" \ : \ - : "r" (bit), "m" (*(volatile int *)(l))); \ + : "r" (bit), "m" (*(volatile int *)(l)) : "memory"); \ 0; \ }) @@ -90,7 +90,7 @@ asm volatile(" lock \n\ btrl %0, %1" \ : \ - : "r" (bit), "m" (*(volatile int *)(l))); \ + : "r" (bit), "m" (*(volatile int *)(l)) : "memory"); \ 0; \ }) diff --git a/i386/include/mach/i386/cthreads.h b/i386/include/mach/i386/cthreads.h index e10cda3..f9755b4 100644 --- a/i386/include/mach/i386/cthreads.h +++ b/i386/include/mach/i386/cthreads.h @@ -37,14 +37,14 @@ typedef volatile int spin_lock_t; ({ register int _u__ ; \ __asm__ volatile("xorl %0, %0; \n\ xchgl %0, %1" \ - : "=&r" (_u__), "=m" (*(p)) ); \ + : "=&r" (_u__), "=m" (*(p)) : "memory" ); \ 0; }) #define spin_try_lock(p)\ (!({ boolean_t _r__; \ __asm__ volatile("movl $1, %0; \n\ xchgl %0, %1" \ - : "=&r" (_r__), "=m" (*(p)) ); \ + : "=&r" (_r__), "=m" (*(p)) : "memory" ); \ _r__; })) #define cthread_sp() \ |