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runtime: fix syscalls for netbsd

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Use correct syscall numbers and arguments for NetBSD.
Provide a trampoline for signal returns (using signal API 3).

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6209048
This commit is contained in:
Joel Sing 2012-05-11 03:48:43 +10:00
parent 38445ca089
commit 5374ded1f3
2 changed files with 38 additions and 7 deletions
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27
src/pkg/runtime/sys_netbsd_386.s
View File

@ -128,8 +128,27 @@ TEXT runtime·nanotime(SB),7,$32
MOVL DX, 4(DI)
RET
TEXT runtime·sigaction(SB),7,$-4
MOVL $46, AX // sys_sigaction
TEXT runtime·sigreturn_tramp(SB),7,$0
LEAL 140(SP), AX // Load address of ucontext
MOVL AX, 4(SP)
MOVL $308, AX // sys_setcontext
INT $0x80
MOVL $-1, 4(SP) // Something failed...
MOVL $1, AX // sys_exit
INT $0x80
TEXT runtime·sigaction(SB),7,$24
LEAL arg0+0(FP), SI
LEAL 4(SP), DI
CLD
MOVSL // arg 1 - sig
MOVSL // arg 2 - act
MOVSL // arg 3 - oact
LEAL runtime·sigreturn_tramp(SB), AX
STOSL // arg 4 - tramp
MOVL $3, AX
STOSL // arg 5 - vers
MOVL $340, AX // sys___sigaction_sigtramp
INT $0x80
JAE 2(PC)
MOVL $0xf1, 0xf1 // crash
@ -259,7 +278,7 @@ TEXT runtime·rfork_thread(SB),7,$8
RET
TEXT runtime·sigaltstack(SB),7,$-8
MOVL $288, AX // sys_sigaltstack
MOVL $281, AX // sys___sigaltstack14
MOVL new+4(SP), BX
MOVL old+8(SP), CX
INT $0x80
@ -281,7 +300,7 @@ TEXT runtime·settls(SB),7,$16
ADDL $8, CX
MOVL CX, 0(CX)
MOVL $0, 0(SP) // syscall gap
MOVL $9, 4(SP) // I386_SET_GSBASE (machine/sysarch.h)
MOVL $16, 4(SP) // X86_SET_GSBASE (x86/sysarch.h)
MOVL CX, 8(SP) // pointer to base
MOVL $165, AX // sys_sysarch
INT $0x80

18
src/pkg/runtime/sys_netbsd_amd64.s
View File

@ -163,11 +163,23 @@ TEXT runtime·nanotime(SB),7,$32
ADDQ DX, AX
RET
TEXT runtime·sigreturn_tramp(SB),7,$-8
MOVQ R15, DI // Load address of ucontext
MOVQ $308, AX // sys_setcontext
SYSCALL
MOVQ $-1, DI // Something failed...
MOVL $1, AX // sys_exit
SYSCALL
TEXT runtime·sigaction(SB),7,$-8
MOVL 8(SP), DI // arg 1 - signum
MOVQ 16(SP), SI // arg 2 - nsa
MOVQ 24(SP), DX // arg 3 - osa
MOVL $46, AX
// arg 4 - tramp
LEAQ runtime·sigreturn_tramp(SB), R10
MOVQ $3, R8 // arg 5 - version
MOVL $340, AX // sys___sigaction_sigtramp
SYSCALL
JCC 2(PC)
MOVL $0xf1, 0xf1 // crash
@ -232,7 +244,7 @@ TEXT runtime·munmap(SB),7,$0
TEXT runtime·sigaltstack(SB),7,$-8
MOVQ new+8(SP), DI // arg 1 - nss
MOVQ old+16(SP), SI // arg 2 - oss
MOVQ $288, AX // sys_sigaltstack
MOVQ $281, AX // sys___sigaltstack14
SYSCALL
JCC 2(PC)
MOVL $0xf1, 0xf1 // crash
@ -244,7 +256,7 @@ TEXT runtime·settls(SB),7,$8
ADDQ $16, DI
MOVQ DI, 0(SP)
MOVQ SP, SI
MOVQ $12, DI // AMD64_SET_FSBASE (machine/sysarch.h)
MOVQ $17, DI // X86_64_SET_FSBASE (x86/sysarch.h)
MOVQ $165, AX // sys_sysarch
SYSCALL
JCC 2(PC)