diff options
Diffstat (limited to 'lib/libpthread/arch/alpha/include/atomic_ops.h')
| -rw-r--r-- | lib/libpthread/arch/alpha/include/atomic_ops.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/lib/libpthread/arch/alpha/include/atomic_ops.h b/lib/libpthread/arch/alpha/include/atomic_ops.h index 90ffd8d..caa291b 100644 --- a/lib/libpthread/arch/alpha/include/atomic_ops.h +++ b/lib/libpthread/arch/alpha/include/atomic_ops.h @@ -45,6 +45,23 @@ atomic_swap_long(long *dst, long val, long *res) " stq_c $2, %1\n" /* attempt the store; $2 clobbered */ " beq $2, 1b\n" /* it didn't work, loop */ " stq $1, %0\n" /* save value of *dst in *res */ + " mb \n" + : "+m"(*res) + : "m"(*dst), "r"(val) + : "memory", "$1", "$2"); /* clobber t0 and t1 */ +} + +static inline void +atomic_swap_int(int *dst, int val, int *res) +{ + /* $1 and $2 are t0 and t1 respectively. */ + __asm ( " ldl $1, %1\n" /* get cache line before lock */ + "1: ldl_l $1, %1\n" /* load *dst asserting lock */ + " mov %2, $2\n" /* save value to be swapped */ + " stl_c $2, %1\n" /* attempt the store; $2 clobbered */ + " beq $2, 1b\n" /* it didn't work, loop */ + " stl $1, %0\n" /* save value of *dst in *res */ + " mb \n" : "+m"(*res) : "m"(*dst), "r"(val) : "memory", "$1", "$2"); /* clobber t0 and t1 */ |
