rt0_windows_amd64.s

Documentation: runtime

     1// Copyright 2011 The Go Authors. All rights reserved.
     2// Use of this source code is governed by a BSD-style
     3// license that can be found in the LICENSE file.
     4
     5#include "go_asm.h"
     6#include "go_tls.h"
     7#include "textflag.h"
     8
     9TEXT _rt0_amd64_windows(SB),NOSPLIT|NOFRAME,$-8
    10	JMP	_rt0_amd64(SB)
    11
    12// When building with -buildmode=(c-shared or c-archive), this
    13// symbol is called. For dynamic libraries it is called when the
    14// library is loaded. For static libraries it is called when the
    15// final executable starts, during the C runtime initialization
    16// phase.
    17// Leave space for four pointers on the stack as required
    18// by the Windows amd64 calling convention.
    19TEXT _rt0_amd64_windows_lib(SB),NOSPLIT|NOFRAME,$40
    20	// Create a new thread to do the runtime initialization and return.
    21	MOVQ	BX, 32(SP) // callee-saved, preserved across the CALL
    22	MOVQ	SP, BX
    23	ANDQ	$~15, SP // alignment as per Windows requirement
    24	MOVQ	_cgo_sys_thread_create(SB), AX
    25	MOVQ	$_rt0_amd64_windows_lib_go(SB), CX
    26	MOVQ	$0, DX
    27	CALL	AX
    28	MOVQ	BX, SP
    29	MOVQ	32(SP), BX
    30	RET
    31
    32TEXT _rt0_amd64_windows_lib_go(SB),NOSPLIT|NOFRAME,$0
    33	MOVQ  $0, DI
    34	MOVQ	$0, SI
    35	MOVQ	$runtime·rt0_go(SB), AX
    36	JMP	AX
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