MASM32でdllを作る その2

#MASM32でdllを作る

dlltest.asm

comment *
ml /c /coff dlltest.asm
link /dll dlltest.obj
*

.386
.model flat

.code

DllEntry proc stdcall hinstDLL:DWORD, fdwReason:DWORD, lpReserved:DWORD
	mov eax, 1
	ret
DllEntry endp

myadd proc stdcall export a:DWORD, b:DWORD
	mov eax, a
	add eax, b
	ret
myadd endp

mysub proc stdcall export a:DWORD, b:DWORD
	mov eax, a
	sub eax, b
	ret
mysub endp

end DllEntry

dev.bat

@echo off
path %path%;C:\masm32\bin
path %path%;C:\Windows\Microsoft.NET\Framework\v4.0.30319
cmd

#C#でテスト
環境：Windows 10 Pro (64bit)
x86版のcsc.exeにpathを通す。

dlltest.cs

// csc /platform:x86 dlltest.cs

using System;
using System.Runtime.InteropServices;

class Program {
	[DllImport("dlltest.dll")]
	static extern int myadd(int a, int b);
	[DllImport("dlltest.dll")]
	static extern int mysub(int a, int b);

	static void Main() {
		Console.WriteLine("add = {0}", myadd(1, 2));
		Console.WriteLine("sub = {0}", mysub(1, 2));
	}
}

##実行例

#MASM32でテスト
dlltest.dll、dlltest.libをカレントディレクトリに用意する。

dllclt.asm

comment *
ml /c /coff dllclt.asm
link /subsystem:console dllclt
*

includelib kernel32.lib
includelib user32.lib
includelib dlltest.lib

.386
.model flat, stdcall
option casemap:none

include windows.inc
include kernel32.inc
include user32.inc

mysub proto stdcall :DWORD, :DWORD

.const
fmt	db	'sub = %d', 0dh, 0ah, 0

.data?
hStdOut	dd	?
written	dd	?
len	dd	?
buf	db	1024 dup (?)

.code
start:
	invoke	GetStdHandle, STD_OUTPUT_HANDLE
	mov	hStdOut, eax
	invoke	mysub, 1, 2
	invoke	wsprintf, addr buf, addr fmt, eax
	mov	len, eax
	cld
	invoke	WriteConsole, hStdOut, addr buf, len, addr written, NULL
	invoke	ExitProcess, 0

end start

dev.bat

@echo off
path %path%;C:\masm32\bin
set INCLUDE=C:\masm32\include
set LIB=C:\masm32\lib
cmd

##実行例

#参考
http://www.interq.or.jp/chubu/r6/masm32/tute/tute017_Jp.html