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runtime: convert openbsd/arm64 locking to libc

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Switch openbsd/arm64 to locking via libc, rather than performing direct
system calls.

Update #36435

Change-Id: I2f30432c4bc232224cf87dca750665b8c40c7b72
Reviewed-on: https://go-review.googlesource.com/c/go/+/286813
Trust: Joel Sing <joel@sing.id.au>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
This commit is contained in:
Joel Sing 2021-01-26 17:52:19 +11:00
parent 5cdf0da1bf
commit 6c8fbfbdcf
3 changed files with 21 additions and 26 deletions
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2
src/runtime/os_openbsd_syscall1.go
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@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build openbsd,!amd64
// +build openbsd,!amd64,!arm64
package runtime

2
src/runtime/sys_openbsd1.go
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@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build openbsd,amd64
// +build openbsd,amd64 openbsd,arm64
package runtime

43
src/runtime/sys_openbsd_arm64.s
View File

@ -188,6 +188,25 @@ TEXT runtime·pthread_create_trampoline(SB),NOSPLIT,$0
ADD $16, RSP
RET
TEXT runtime·thrsleep_trampoline(SB),NOSPLIT,$0
MOVW 8(R0), R1 // arg 2 - clock_id
MOVD 16(R0), R2 // arg 3 - abstime
MOVD 24(R0), R3 // arg 4 - lock
MOVD 32(R0), R4 // arg 5 - abort
MOVD 0(R0), R0 // arg 1 - id
CALL libc_thrsleep(SB)
RET
TEXT runtime·thrwakeup_trampoline(SB),NOSPLIT,$0
MOVW 8(R0), R1 // arg 2 - count
MOVD 0(R0), R0 // arg 1 - id
CALL libc_thrwakeup(SB)
RET
TEXT runtime·sched_yield_trampoline(SB),NOSPLIT,$0
CALL libc_sched_yield(SB)
RET
// Exit the entire program (like C exit)
TEXT runtime·exit(SB),NOSPLIT|NOFRAME,$0
MOVW code+0(FP), R0 // arg 1 - status
@ -422,30 +441,6 @@ TEXT runtime·sigaltstack(SB),NOSPLIT,$0
MOVD R8, (R8)
RET
TEXT runtime·osyield(SB),NOSPLIT,$0
MOVD $298, R8 // sys_sched_yield
INVOKE_SYSCALL
RET
TEXT runtime·thrsleep(SB),NOSPLIT,$0
MOVD ident+0(FP), R0 // arg 1 - ident
MOVW clock_id+8(FP), R1 // arg 2 - clock_id
MOVD tsp+16(FP), R2 // arg 3 - tsp
MOVD lock+24(FP), R3 // arg 4 - lock
MOVD abort+32(FP), R4 // arg 5 - abort
MOVD $94, R8 // sys___thrsleep
INVOKE_SYSCALL
MOVW R0, ret+40(FP)
RET
TEXT runtime·thrwakeup(SB),NOSPLIT,$0
MOVD ident+0(FP), R0 // arg 1 - ident
MOVW n+8(FP), R1 // arg 2 - n
MOVD $301, R8 // sys___thrwakeup
INVOKE_SYSCALL
MOVW R0, ret+16(FP)
RET
TEXT runtime·sysctl(SB),NOSPLIT,$0
MOVD mib+0(FP), R0 // arg 1 - mib
MOVW miblen+8(FP), R1 // arg 2 - miblen