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rsc 2005-08-22 16:56:28 +00:00
parent ad9e684811
commit 9f7a3e020e
1 changed files with 16 additions and 0 deletions
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src/libthread/Linux-power-asm.s Normal file
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.globl _tas
_tas:
li %r0, 0
mr %r4, %r3
lis %r5, 0xcafe
ori %r5, %r5, 0xbabe
1:
lwarx %r3, %r0, %r4
cmpwi %r3, 0
bne 2f
stwcx. %r5, %r0, %r4
bne- 1b
2:
sync
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