blob: 886a6811a22dc24a011b66609497b19413d5f733 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
|
/*
* @(#)x86.gcc 10.2 (Sleepycat) 6/21/97
*
* For gcc/x86, 0 is clear, 1 is set.
*/
#define TSL_SET(tsl) ({ \
register tsl_t *__l = (tsl); \
int __r; \
asm volatile("movl $1,%%eax; xchgb %1,%%al; xorl $1,%%eax" \
: "=&a" (__r), "=m" (*__l) \
: "1" (*__l) \
); \
__r & 1; \
})
#define TSL_UNSET(tsl) (*(tsl) = 0)
#define TSL_INIT(tsl) TSL_UNSET(tsl)
|
