Visual Studio アセンブラでmsvcrtを使ってみた

環境

Windows 11 Pro (64bit)
Visual Studio Community 2022

ソースなど

バッチファイル

dev32crt.bat

@echo off
path %path%;D:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx64\x86
set lib=%lib%;D:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\lib\x86
set lib=%lib%;C:\Program Files (x86)\Windows Kits\10\Lib\10.0.19041.0\ucrt\x86
set lib=%lib%;C:\Program Files (x86)\Windows Kits\10\Lib\10.0.19041.0\um\x86
cmd

アセンブリ ソース

printf.asm

comment *
ml /c printf.asm
link /subsystem:console printf
*
includelib msvcrt
includelib legacy_stdio_definitions

.model flat

printf proto c :dword,:vararg

.const
fmt1	db	'argc=[%d]',0ah,0
fmt2	db	'argv[%d]=[%s]',0ah,0

.data
i$	dd	?
p$	dd	?

.code
argc$ = 8
argv$ = 12
main proc c
	push	ebp
	mov	ebp, esp

	mov	eax, argc$[ebp]
	invoke	printf, addr fmt1, eax
	mov	i$, 0
@@:
	mov	edx, i$
	mov	eax, argv$[ebp]
	mov	ecx, [eax+edx*4]
	mov	p$, ecx
	cmp	p$, 0
	je	@f
	invoke	printf, addr fmt2, i$, p$
	inc	i$
	jmp	@b
@@:
	mov	eax, 0
	pop	ebp
	ret
main endp

end

実行例

D:\Projects\msvc>ml /c printf.asm
Microsoft (R) Macro Assembler Version 14.34.31935.0
Copyright (C) Microsoft Corporation.  All rights reserved.

 Assembling: printf.asm

D:\Projects\msvc>link /subsystem:console printf
Microsoft (R) Incremental Linker Version 14.34.31935.0
Copyright (C) Microsoft Corporation.  All rights reserved.


D:\Projects\msvc>printf tako ika manbo
argc=[4]
argv[0]=[printf]
argv[1]=[tako]
argv[2]=[ika]
argv[3]=[manbo]

D:\Projects\msvc>