rt0_windows_amd64.s

     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  
     9  TEXT _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.
    19  TEXT _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  
    32  TEXT _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
    37
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