diff options
Diffstat (limited to 'lib9/lock-MacOSX-power.s')
| -rw-r--r-- | lib9/lock-MacOSX-power.s | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/lib9/lock-MacOSX-power.s b/lib9/lock-MacOSX-power.s new file mode 100644 index 00000000..d5e15d4d --- /dev/null +++ b/lib9/lock-MacOSX-power.s @@ -0,0 +1,16 @@ +#include <architecture/ppc/asm_help.h> + +LEAF(__tas) + sync + mr r4,r3 + addi r5,0,0x1 +1: + lwarx r3,0,r4 + cmpwi r3,0x0 + bne- 2f + stwcx. r5,0,r4 + bne- 1b /* Lost reservation, try again */ +2: + sync + blr +END(__tas) |