diff options
Diffstat (limited to 'db2/mutex/alpha.h')
| -rw-r--r-- | db2/mutex/alpha.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/db2/mutex/alpha.h b/db2/mutex/alpha.h new file mode 100644 index 0000000..ad3afc4 --- /dev/null +++ b/db2/mutex/alpha.h @@ -0,0 +1,26 @@ +/* For alpha, 0 is clear, 1 is set. */ + +#ifdef __GNUC__ +#define TSL_SET(tsl) ({ \ + register tsl_t *__l = (tsl); \ + int __r; \ + asm volatile( \ + "1: ldl_l %0,%1\n" \ + " blbs %0,2f\n" \ + " mov 1,%0\n" \ + " stl_c %0,%1\n" \ + " bne %0,1b\n" \ + " mb\n" \ + "2:" \ + : "=&r"(__r), "=m"(*__l) : "m"(*__l) : "memory"); \ + __r; \ +}) +#endif + +#ifdef __DECC +#include <alpha/builtins.h> +#define TSL_SET(tsl) (__LOCK_LONG_RETRY((tsl), 1) != 0) +#endif + +#define TSL_UNSET(tsl) (*(tsl) = 0) +#define TSL_INIT(tsl) TSL_UNSET(tsl) |