diff options
Diffstat (limited to 'mdk-stage1/dietlibc/ia64/__testandset.S')
| -rw-r--r-- | mdk-stage1/dietlibc/ia64/__testandset.S | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/mdk-stage1/dietlibc/ia64/__testandset.S b/mdk-stage1/dietlibc/ia64/__testandset.S new file mode 100644 index 000000000..d462e3c58 --- /dev/null +++ b/mdk-stage1/dietlibc/ia64/__testandset.S @@ -0,0 +1,11 @@ +.text +.globl __testandset +.proc __testandset +__testandset: + mov ar.ccv = r0 + mov r29 = 1 + ld8 r3 = [r32] + cmpxchg8.acq r8 = [r32], r29, ar.ccv /* cmpxchg is atomic */ + br.ret.sptk.clr b0 +.endp __testandset +.size __testandset, . - __testandset |