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runtime: switch openbsd/386 locking to libc

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Switch openbsd/386 to locking via libc, rather than performing direct
system calls.

Update #36435

Change-Id: I8198171e21f9acf28846ad723ea9ff48f7c8a69d
Reviewed-on: https://go-review.googlesource.com/c/go/+/287652
Trust: Joel Sing <joel@sing.id.au>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
This commit is contained in:
Joel Sing 2021-01-28 23:06:56 +11:00
parent 4893eee9dc
commit c3b2b04156
3 changed files with 46 additions and 21 deletions
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4
src/runtime/os_openbsd_syscall1.go
View file

@ -2,8 +2,8 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build openbsd && !amd64 && !arm64
// +build openbsd,!amd64,!arm64
//go:build openbsd && !386 && !amd64 && !arm64
// +build openbsd,!386,!amd64,!arm64
package runtime

4
src/runtime/sys_openbsd1.go
View file

@ -2,8 +2,8 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build (openbsd && amd64) || (openbsd && arm64)
// +build openbsd,amd64 openbsd,arm64
//go:build (openbsd && 386) || (openbsd && amd64) || (openbsd && arm64)
// +build openbsd,386 openbsd,amd64 openbsd,arm64
package runtime

59
src/runtime/sys_openbsd_386.s
View file

@ -167,6 +167,48 @@ TEXT runtime·pthread_create_trampoline(SB),NOSPLIT,$0
POPL BP
RET
TEXT runtime·thrsleep_trampoline(SB),NOSPLIT,$0
PUSHL BP
MOVL SP, BP
SUBL $20, SP
MOVL 28(SP), DX // pointer to args
MOVL 0(DX), AX
MOVL 4(DX), BX
MOVL 8(DX), CX
MOVL AX, 0(SP) // arg 1 - id
MOVL BX, 4(SP) // arg 2 - clock_id
MOVL CX, 8(SP) // arg 3 - abstime
MOVL 12(DX), AX
MOVL 16(DX), BX
MOVL AX, 12(SP) // arg 4 - lock
MOVL BX, 16(SP) // arg 5 - abort
CALL libc_thrsleep(SB)
MOVL BP, SP
POPL BP
RET
TEXT runtime·thrwakeup_trampoline(SB),NOSPLIT,$0
PUSHL BP
MOVL SP, BP
SUBL $8, SP
MOVL 16(SP), DX // pointer to args
MOVL 0(DX), AX
MOVL 4(DX), BX
MOVL AX, 0(SP) // arg 1 - id
MOVL BX, 4(SP) // arg 2 - count
CALL libc_thrwakeup(SB)
MOVL BP, SP
POPL BP
RET
TEXT runtime·sched_yield_trampoline(SB),NOSPLIT,$0
PUSHL BP
MOVL SP, BP
CALL libc_sched_yield(SB)
MOVL BP, SP
POPL BP
RET
// Exit the entire program (like C exit)
TEXT runtime·exit(SB),NOSPLIT,$-4
MOVL $1, AX
@ -403,23 +445,6 @@ TEXT set_tcb<>(SB),NOSPLIT,$8
MOVL $0xf1, 0xf1 // crash
RET
TEXT runtime·osyield(SB),NOSPLIT,$-4
MOVL $298, AX // sys_sched_yield
INT $0x80
RET
TEXT runtime·thrsleep(SB),NOSPLIT,$-4
MOVL $94, AX // sys___thrsleep
INT $0x80
MOVL AX, ret+20(FP)
RET
TEXT runtime·thrwakeup(SB),NOSPLIT,$-4
MOVL $301, AX // sys___thrwakeup
INT $0x80
MOVL AX, ret+8(FP)
RET
TEXT runtime·sysctl(SB),NOSPLIT,$28
LEAL mib+0(FP), SI
LEAL 4(SP), DI