diff options
| -rw-r--r-- | exec-i386.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/exec-i386.c b/exec-i386.c index b75c6c70a0..508d068824 100644 --- a/exec-i386.c +++ b/exec-i386.c @@ -102,6 +102,25 @@ static inline int testandset (int *p) } #endif +#ifdef __alpha__ +int testandset (int *p) +{ + int ret; + unsigned long one; + + __asm__ __volatile__ ("0: mov 1,%2\n" + " ldl_l %0,%1\n" + " stl_c %2,%1\n" + " beq %2,1f\n" + ".subsection 2\n" + "1: br 0b\n" + ".previous" + : "=r" (ret), "=m" (*p), "=r" (one) + : "m" (*p)); + return ret; +} +#endif + int global_cpu_lock = 0; void cpu_lock(void) |