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libthread
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NetBSD-power-asm.s
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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
2
f
stwcx.
%r5, %
r0
,
%r4
bne
-
1
b
2
:
sync
blr