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libthread: rm OpenBSD tas implementations

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OpenBSD is using pthreads now, so no need for tas.
This commit is contained in:
Russ Cox 2020-01-19 22:52:04 -05:00
parent 41b3e8b989
commit 37e7d24c0c
2 changed files with 1 additions and 23 deletions
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7
src/libthread/OpenBSD-386-asm.s
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@ -1,10 +1,3 @@
.globl _tas
_tas:
movl $0xCAFEBABE, %eax
movl 4(%esp), %ecx
xchgl %eax, 0(%ecx)
ret
.globl getmcontext
getmcontext:
movl 4(%esp), %eax

15
src/libthread/OpenBSD-power-asm.S
View file

@ -1,18 +1,3 @@
ENTRY(_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
blr
ENTRY(_getmcontext) /* xxx: instruction scheduling */
mflr %r0
mfcr %r5