Visual Studio アセンブラでwsprintfを使ってみた

環境

Windows 11 Pro (64bit)
Visual Studio Community 2022

x86

バッチファイル

dev32.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%;C:\Program Files (x86)\Windows Kits\10\Lib\10.0.19041.0\um\x86
cmd

アセンブリ ソース

wsprintf.asm

comment *
ml /c /Fl /Sa wsprintf.asm
link /subsystem:console wsprintf
*
includelib kernel32
includelib user32

.model flat

NULL equ 0
STD_OUTPUT_HANDLE equ -11

ExitProcess proto stdcall :dword
GetStdHandle proto stdcall :dword
WriteConsoleA proto stdcall :dword,:dword,:dword,:dword,:dword
wsprintfA proto c :dword,:dword,:vararg

.const
fmt	db	'[%x]',0dh,0ah,0

.data?
hConOut	dd	?
buf	db	1024 dup (?)
len	dd	?

.code
start proc c
	invoke	GetStdHandle, STD_OUTPUT_HANDLE
	mov	hConOut, eax
	invoke	wsprintfA, addr buf, addr fmt, 0cafebabeh
	mov	len, eax
	invoke	WriteConsoleA, hConOut, addr buf, len, NULL, NULL
	invoke	ExitProcess, 0
start endp
end start

実行例

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

 Assembling: wsprintf.asm

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


D:\Projects\msvc>wsprintf
[cafebabe]

D:\Projects\msvc>

x64

バッチファイル

dev64.bat

@echo off
path %path%;C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.37.32822\bin\Hostx64\x64
set lib=%lib%;C:\Program Files (x86)\Windows Kits\10\Lib\10.0.22000.0\um\x64
prompt $e[33m$p$g$e[m
cmd

アセンブリ ソース

printf64.asm

comment *
ml64 /c /Fl printf64.asm
link /subsystem:console /entry:start printf64
*
includelib kernel32
includelib user32

NULL equ 0
STD_OUTPUT_HANDLE equ -11

extern ExitProcess :proc
extern GetStdHandle :proc
extern WriteConsoleA :proc
extern wsprintfA :proc

.const
fmt	db	'hoge %#x %d',0dh,0ah,0

.data?
hOut	dq	?
buf	db	1024 dup(?)

.code
start proc
	sub	rsp, 28h
	mov	ecx, STD_OUTPUT_HANDLE
	call	GetStdHandle
	mov	hOut, rax

	mov	r9d, 59634
	mov	r8d, 0f3c8h
	mov	rdx, offset fmt
	mov	rcx, offset buf
	call	wsprintfA

	mov	qword ptr [rsp+20h], NULL
	mov	r9d, NULL
	mov	r8d, eax
	mov	rdx, offset buf
	mov	rcx, hOut
	call	WriteConsoleA

	mov	ecx, 0
	call	ExitProcess
start endp
end

実行例

Microsoft Windows [Version 10.0.22621.2134]
(c) Microsoft Corporation. All rights reserved.

C:\Projects\msvc>ml64 /c /Fl printf64.asm
Microsoft (R) Macro Assembler (x64) Version 14.37.32822.0
Copyright (C) Microsoft Corporation.  All rights reserved.

 Assembling: printf64.asm

C:\Projects\msvc>link /subsystem:console /entry:start printf64
Microsoft (R) Incremental Linker Version 14.37.32822.0
Copyright (C) Microsoft Corporation.  All rights reserved.


C:\Projects\msvc>printf64
hoge 0xf3c8 59634