tlibthread: rm OpenBSD tas implementations - plan9port - [fork] Plan 9 from user space
(HTM) git clone git://src.adamsgaard.dk/plan9port
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---
(DIR) commit 37e7d24c0cb9fd2d18ab332980c31cf470454d93
(DIR) parent 41b3e8b9893a8561af7e85ca98444bc284b4013d
(HTM) Author: Russ Cox <rsc@swtch.com>
Date: Sun, 19 Jan 2020 22:52:04 -0500
libthread: rm OpenBSD tas implementations
OpenBSD is using pthreads now, so no need for tas.
Diffstat:
M src/libthread/OpenBSD-386-asm.s | 9 +--------
M src/libthread/OpenBSD-power-asm.S | 15 ---------------
2 files changed, 1 insertion(+), 23 deletions(-)
---
(DIR) diff --git a/src/libthread/OpenBSD-386-asm.s b/src/libthread/OpenBSD-386-asm.s
t@@ -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
t@@ -17,7 +10,7 @@ getmcontext:
movl %esi, 24(%eax)
movl %ebp, 28(%eax)
movl %ebx, 36(%eax)
- movl %edx, 40(%eax)
+ movl %edx, 40(%eax)
movl %ecx, 44(%eax)
movl $1, 48(%eax) /* %eax */
(DIR) diff --git a/src/libthread/OpenBSD-power-asm.S b/src/libthread/OpenBSD-power-asm.S
t@@ -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