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go/src/runtime/rt0_linux_amd64.s
Srdjan Petrovic 1f65c9c141 runtime: deflake TestNewOSProc0, fix _rt0_amd64_linux_lib stack alignment
This addresses iant's comments from CL 9164.

Change-Id: I7b5b282f61b11aab587402c2d302697e76666376
Reviewed-on: https://go-review.googlesource.com/9222
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-04-23 23:09:03 +00:00

65 lines
1.6 KiB
ArmAsm

// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
#include "textflag.h"
TEXT _rt0_amd64_linux(SB),NOSPLIT,$-8
LEAQ 8(SP), SI // argv
MOVQ 0(SP), DI // argc
MOVQ $main(SB), AX
JMP AX
// When building with -buildmode=c-shared, this symbol is called when the shared
// library is loaded.
TEXT _rt0_amd64_linux_lib(SB),NOSPLIT,$0x48
MOVQ BX, 0x10(SP)
MOVQ BP, 0x18(SP)
MOVQ R12, 0x20(SP)
MOVQ R13, 0x28(SP)
MOVQ R14, 0x30(SP)
MOVQ R15, 0x38(SP)
MOVQ DI, _rt0_amd64_linux_lib_argc<>(SB)
MOVQ SI, _rt0_amd64_linux_lib_argv<>(SB)
// Create a new thread to do the runtime initialization and return.
MOVQ _cgo_sys_thread_create(SB), AX
TESTQ AX, AX
JZ nocgo
MOVQ $_rt0_amd64_linux_lib_go(SB), DI
MOVQ $0, SI
CALL AX
JMP restore
nocgo:
MOVQ $8388608, 0(SP) // stacksize
MOVQ $_rt0_amd64_linux_lib_go(SB), AX
MOVQ AX, 8(SP) // fn
MOVQ $runtime·newosproc0(SB), AX
CALL AX
restore:
MOVQ 0x10(SP), BX
MOVQ 0x18(SP), BP
MOVQ 0x20(SP), R12
MOVQ 0x28(SP), R13
MOVQ 0x30(SP), R14
MOVQ 0x38(SP), R15
RET
TEXT _rt0_amd64_linux_lib_go(SB),NOSPLIT,$0
MOVQ _rt0_amd64_linux_lib_argc<>(SB), DI
MOVQ _rt0_amd64_linux_lib_argv<>(SB), SI
MOVQ $runtime·rt0_go(SB), AX
JMP AX
DATA _rt0_amd64_linux_lib_argc<>(SB)/8, $0
GLOBL _rt0_amd64_linux_lib_argc<>(SB),NOPTR, $8
DATA _rt0_amd64_linux_lib_argv<>(SB)/8, $0
GLOBL _rt0_amd64_linux_lib_argv<>(SB),NOPTR, $8
TEXT main(SB),NOSPLIT,$-8
MOVQ $runtime·rt0_go(SB), AX
JMP AX