diff options
Diffstat (limited to 'i386/i386/lock.h')
| -rw-r--r-- | i386/i386/lock.h | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/i386/i386/lock.h b/i386/i386/lock.h index 29214538..35e2ea4c 100644 --- a/i386/i386/lock.h +++ b/i386/i386/lock.h @@ -43,15 +43,15 @@ * The code here depends on the GNU C compiler. */ -/*#define _simple_lock_xchg_(lock, new_val) \ - * ({ int _old_val_; \ - * asm volatile("xchgl %0, %2" \ - * : "=r" (_old_val_) \ - * : "0" (new_val), "m" (*(lock)) : "memory" \ - * ); \ - * _old_val_; \ - * }) -*/ +#define _simple_lock_xchg_(lock, new_val) \ + ({ int _old_val_; \ + asm volatile("xchgl %0, %2" \ + : "=r" (_old_val_) \ + : "0" (new_val), "m" (*(lock)) : "memory" \ + ); \ + _old_val_; \ + }) + #define simple_lock_init(l) \ ((l)->lock_data = 0) |