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runtime: switch openbsd/arm locking to libc

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

Update #36435

Change-Id: I190abb1aa544d2cb406fe412960ec106c9716f87
Reviewed-on: https://go-review.googlesource.com/c/go/+/315791
Trust: Joel Sing <joel@sing.id.au>
Reviewed-by: Cherry Mui <cherryyz@google.com>
This commit is contained in:
Joel Sing 2021-02-01 03:51:02 +11:00
parent 8ec8f6aa87
commit 83df4a590b
3 changed files with 39 additions and 36 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 && !386 && !amd64 && !arm64
// +build openbsd,!386,!amd64,!arm64
//go:build openbsd && !386 && !amd64 && !arm && !arm64
// +build openbsd,!386,!amd64,!arm,!arm64
package runtime

4
src/runtime/sys_openbsd1.go
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@ -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 && 386) || (openbsd && amd64) || (openbsd && arm64)
// +build openbsd,386 openbsd,amd64 openbsd,arm64
//go:build (openbsd && 386) || (openbsd && amd64) || (openbsd && arm) || (openbsd && arm64)
// +build openbsd,386 openbsd,amd64 openbsd,arm openbsd,arm64
package runtime

67
src/runtime/sys_openbsd_arm.s
View File

@ -104,7 +104,7 @@ TEXT runtime·pthread_attr_init_trampoline(SB),NOSPLIT,$0
MOVW R13, R9
BIC $0x7, R13 // align for ELF ABI
MOVW 0(R0), R0 // arg 1 attr
BL libc_pthread_attr_init(SB)
CALL libc_pthread_attr_init(SB)
MOVW R9, R13
RET
@ -112,7 +112,7 @@ TEXT runtime·pthread_attr_destroy_trampoline(SB),NOSPLIT,$0
MOVW R13, R9
BIC $0x7, R13 // align for ELF ABI
MOVW 0(R0), R0 // arg 1 attr
BL libc_pthread_attr_destroy(SB)
CALL libc_pthread_attr_destroy(SB)
MOVW R9, R13
RET
@ -121,7 +121,7 @@ TEXT runtime·pthread_attr_getstacksize_trampoline(SB),NOSPLIT,$0
BIC $0x7, R13 // align for ELF ABI
MOVW 4(R0), R1 // arg 2 size
MOVW 0(R0), R0 // arg 1 attr
BL libc_pthread_attr_getstacksize(SB)
CALL libc_pthread_attr_getstacksize(SB)
MOVW R9, R13
RET
@ -130,7 +130,7 @@ TEXT runtime·pthread_attr_setdetachstate_trampoline(SB),NOSPLIT,$0
BIC $0x7, R13 // align for ELF ABI
MOVW 4(R0), R1 // arg 2 state
MOVW 0(R0), R0 // arg 1 attr
BL libc_pthread_attr_setdetachstate(SB)
CALL libc_pthread_attr_setdetachstate(SB)
MOVW R9, R13
RET
@ -142,7 +142,37 @@ TEXT runtime·pthread_create_trampoline(SB),NOSPLIT,$0
MOVW 4(R0), R2 // arg 3 start
MOVW 8(R0), R3 // arg 4 arg
MOVW R13, R0 // arg 1 &threadid (discarded)
BL libc_pthread_create(SB)
CALL libc_pthread_create(SB)
MOVW R9, R13
RET
TEXT runtime·thrsleep_trampoline(SB),NOSPLIT,$0
MOVW R13, R9
SUB $16, R13
BIC $0x7, R13 // align for ELF ABI
MOVW 4(R0), R1 // arg 2 - clock_id
MOVW 8(R0), R2 // arg 3 - abstime
MOVW 12(R0), R3 // arg 4 - lock
MOVW 16(R0), R4 // arg 5 - abort (on stack)
MOVW R4, 0(R13)
MOVW 0(R0), R0 // arg 1 - id
CALL libc_thrsleep(SB)
MOVW R9, R13
RET
TEXT runtime·thrwakeup_trampoline(SB),NOSPLIT,$0
MOVW R13, R9
BIC $0x7, R13 // align for ELF ABI
MOVW 4(R0), R1 // arg 2 - count
MOVW 0(R0), R0 // arg 1 - id
CALL libc_thrwakeup(SB)
MOVW R9, R13
RET
TEXT runtime·sched_yield_trampoline(SB),NOSPLIT,$0
MOVW R13, R9
BIC $0x7, R13 // align for ELF ABI
CALL libc_sched_yield(SB)
MOVW R9, R13
RET
@ -377,33 +407,6 @@ TEXT runtime·sigaltstack(SB),NOSPLIT,$0
MOVW.CS R8, (R8)
RET
TEXT runtime·osyield(SB),NOSPLIT,$0
MOVW $298, R12 // sys_sched_yield
INVOKE_SYSCALL
RET
TEXT runtime·thrsleep(SB),NOSPLIT,$4
MOVW ident+0(FP), R0 // arg 1 - ident
MOVW clock_id+4(FP), R1 // arg 2 - clock_id
MOVW tsp+8(FP), R2 // arg 3 - tsp
MOVW lock+12(FP), R3 // arg 4 - lock
MOVW abort+16(FP), R4 // arg 5 - abort (on stack)
MOVW R4, 4(R13)
ADD $4, R13
MOVW $94, R12 // sys___thrsleep
INVOKE_SYSCALL
SUB $4, R13
MOVW R0, ret+20(FP)
RET
TEXT runtime·thrwakeup(SB),NOSPLIT,$0
MOVW ident+0(FP), R0 // arg 1 - ident
MOVW n+4(FP), R1 // arg 2 - n
MOVW $301, R12 // sys___thrwakeup
INVOKE_SYSCALL
MOVW R0, ret+8(FP)
RET
TEXT runtime·sysctl(SB),NOSPLIT,$8
MOVW mib+0(FP), R0 // arg 1 - mib
MOVW miblen+4(FP), R1 // arg 2 - miblen