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runtime: fix stack cleanup on windows/amd64

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In amd64 it is the caller who cleans the stack.

R=alex.brainman, vcc.163, jp
CC=golang-dev
https://golang.org/cl/4966046
This commit is contained in:
Hector Chu 2011-08-29 22:12:56 +10:00 committed by Alex Brainman
parent 1d6ae53cc2
commit 0f5902d6be
1 changed files with 6 additions and 33 deletions
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39
src/pkg/runtime/windows/amd64/sys.s
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@ -105,25 +105,21 @@ TEXT runtime·ctrlhandler(SB),7,$0
POPQ SI
POPQ BX
POPQ BP
MOVQ 0(SP), CX
ADDQ $16, SP
JMP CX
RET
TEXT runtime·callbackasm(SB),7,$0
// TODO
RET
// void tstart(M *newm);
TEXT runtime·tstart(SB),7,$0
MOVQ newm+8(SP), CX // m
// uint32 tstart_stdcall(M *newm);
TEXT runtime·tstart_stdcall(SB),7,$0
// CX contains first arg newm
MOVQ m_g0(CX), DX // g
MOVQ SP, DI // remember stack
// Layout new m scheduler stack on os stack.
MOVQ SP, AX
MOVQ AX, g_stackbase(DX)
SUBQ $(64*1024), AX // stack size
SUBQ $(64*1024), AX // stack size
MOVQ AX, g_stackguard(DX)
// Set up tls.
@ -135,32 +131,10 @@ TEXT runtime·tstart(SB),7,$0
// Someday the convention will be D is always cleared.
CLD
PUSHQ DI // original stack
CALL runtime·stackcheck(SB) // clobbers AX,CX
CALL runtime·stackcheck(SB) // clobbers AX,CX
CALL runtime·mstart(SB)
POPQ DI // original stack
MOVQ DI, SP
RET
// uint32 tstart_stdcall(M *newm);
TEXT runtime·tstart_stdcall(SB),7,$0
MOVQ CX, BX // stdcall first arg in RCX
PUSHQ BX
CALL runtime·tstart+0(SB)
POPQ BX
// Adjust stack for stdcall to return properly.
MOVQ (SP), AX // save return address
ADDQ $8, SP // remove single parameter
MOVQ AX, (SP) // restore return address
XORL AX, AX // return 0 == success
RET
TEXT runtime·notok(SB),7,$0
@ -172,4 +146,3 @@ TEXT runtime·notok(SB),7,$0
TEXT runtime·settls(SB),7,$0
MOVQ DI, 0x58(GS)
RET