diff options
| author | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2004-03-17 23:46:04 +0000 |
|---|---|---|
| committer | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2004-03-17 23:46:04 +0000 |
| commit | bc51c5c989c12b3936b78c5772a3308629a7484c (patch) | |
| tree | 73f24550783bf7685add8e5828ffd28815759c7f /exec-all.h | |
| parent | 5069146392ab358b106ed6a7a05440c69924448d (diff) | |
| download | qemu-bc51c5c989c12b3936b78c5772a3308629a7484c.tar.gz | |
initial x86-64 host support (Gwenole Beauchesne)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@670 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'exec-all.h')
| -rw-r--r-- | exec-all.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/exec-all.h b/exec-all.h index 3c79eca917..9ecf2dca7f 100644 --- a/exec-all.h +++ b/exec-all.h @@ -400,6 +400,20 @@ static inline int testandset (int *p) } #endif +#ifdef __x86_64__ +static inline int testandset (int *p) +{ + char ret; + int readval; + + __asm__ __volatile__ ("lock; cmpxchgl %3, %1; sete %0" + : "=q" (ret), "=m" (*p), "=a" (readval) + : "r" (1), "m" (*p), "a" (0) + : "memory"); + return ret; +} +#endif + #ifdef __s390__ static inline int testandset (int *p) { |