学 Win32 汇编[4]: 使用 Debug 输出测试结果

由于 Debug 输出是使用的标准的 Win32 窗口, 所以 include 和 includelib 的文件较多.

这样建立工程时就不需要是控制台程序了, 工程建立方法:

文件 -> 新建工程 -> 工程类型: Win32 App (no res) ...

PrintString: 输出字符串变量

; Test4_1.asm
.386
.model flat, stdcall

include    windows.inc
include    kernel32.inc
include    masm32.inc
include    debug.inc
includelib kernel32.lib
includelib masm32.lib
includelib debug.lib

.data
szText db 'Hello World!', 0

.code
start:
PrintString szText  ;Hello World!
ret
end start

PrintText: 直接输出字符串

; Test4_2.asm
.386
.model flat, stdcall

include    windows.inc
include    kernel32.inc
include    masm32.inc
include    debug.inc
includelib kernel32.lib
includelib masm32.lib
includelib debug.lib

.code
start:
PrintText 'Hello World!'  ;Hello World!
ret
end start

PrintStringByAddr: 根据字符串地址输出字符串

; Test4_3.asm
.386
.model flat, stdcall

include    windows.inc
include    kernel32.inc
include    masm32.inc
include    debug.inc
includelib kernel32.lib
includelib masm32.lib
includelib debug.lib

.data
szText db 'Hello World!', 0

.code
start:
PrintStringByAddr offset szText  ;Hello World!

mov eax, offset szText
PrintStringByAddr eax            ;Hello World!
ret
end start

PrintLine: 输出一行线

; Test4_4.asm
.386
.model flat, stdcall

include    windows.inc
include    kernel32.inc
include    masm32.inc
include    debug.inc
includelib kernel32.lib
includelib masm32.lib
includelib debug.lib

.data
szText db 'Hello World!', 0

.code
start:
PrintLine           ;----------------------------------------
PrintString szText  ;Hello World!
PrintLine           ;----------------------------------------
ret
end start

PrintDec: 输出 8-32 位的十进制整数

; Test4_5.asm
.386
.model flat, stdcall

include    windows.inc
include    kernel32.inc
include    masm32.inc
include    debug.inc
includelib kernel32.lib
includelib masm32.lib
includelib debug.lib

.data
v1 db 127
v2 db -128
v3 dw 32767
v4 dw -32768
v5 dd 2147483647
v6 dd -2147483648

.code
start:
PrintDec v1  ;127
PrintDec v2  ;-128
PrintDec v3  ;32767
PrintDec v4  ;-32768
PrintDec v5  ;2147483647
PrintDec v6  ;-2147483648

;它还可以有第二个文本参数
PrintDec v1, 'Other Text'  ;127, Other Text
ret
end start

PrintHex: 输出 8-32 位的十进制整数

; Test4_6.asm
.386
.model flat, stdcall

include    windows.inc
include    kernel32.inc
include    masm32.inc
include    debug.inc
includelib kernel32.lib
includelib masm32.lib
includelib debug.lib

.data
v1 db 127
v2 db -128
v3 dw 32767
v4 dw -32768
v5 dd 2147483647
v6 dd -2147483648

.code
start:
PrintHex v1  ;7F
PrintHex v2  ;80
PrintHex v3  ;7FFF
PrintHex v4  ;8000
PrintHex v5  ;7FFFFFFF
PrintHex v6  ;80000000

;它还可以有第二个文本参数
PrintHex v1, 'Other Text'  ;7F, Other Text
ret
end start

PrintDouble: 输出双精度浮点数

; Test4_7.asm
.386
.model flat, stdcall

include    windows.inc
include    kernel32.inc
include    masm32.inc
include    debug.inc
includelib kernel32.lib
includelib masm32.lib
includelib debug.lib

.data
v1 real8 3.14

.code
start:
PrintDouble v1                ;3.14

;它还可以有第二个文本参数
PrintDouble v1, 'Other Text'  ;3.14, Other Text
ret
end start

Spy..StopSpy: 跟踪变量(变量必须是 8-32 位整数)

; Test4_8.asm
.386
.model flat, stdcall

include    windows.inc
include    kernel32.inc
include    masm32.inc
include    debug.inc
includelib kernel32.lib
includelib masm32.lib
includelib debug.lib

.data
val dd 0

.code
start:
Spy val
mov val, 2  ;2
add val, 3  ;5
sub val, 1  ;4
shl val, 1  ;8
StopSpy

ret
end start

DumpMem: 查看内存

; Test4_9.asm
.386
.model flat, stdcall

include    windows.inc
include    kernel32.inc
include    masm32.inc
include    debug.inc
includelib kernel32.lib
includelib masm32.lib
includelib debug.lib

.data
szText db 'ABCDEFG', 0
num    dd 13579ACEh

.code
start:
DumpMem offset szText, 4  ;41 42 43 44
DumpMem offset szText, 7  ;41 42 43 44 45 46 47

DumpMem offset num, 4     ;CE 9A 57 13

;它也可以有个文本参数
DumpMem offset num, 4, 'txt'
ret
end start

DbgDump: 类似 DumpMem, 更适合查看文本

; Test4_10.asm
.386
.model flat, stdcall

include    windows.inc
include    kernel32.inc
include    masm32.inc
include    debug.inc
includelib kernel32.lib
includelib masm32.lib
includelib debug.lib

.data
szText db 'ABCDEFG', 0
num    dd 13579ACEh

.code
start:
DbgDump offset szText, 4     ;41 42 43 44 - ABCD
DbgDump offset szText, 7     ;41 42 43 44 45 46 47 - ABCDEFG

DbgDump offset num, 4        ;CE 9A 57 13

;它也可以有个文本参数
DbgDump offset num, 4, 'txt'
ret
end start

需要注意的是 debug.inc 提供的这些宏指令都是区分大小写的.

还有更多指令可参见帮助: \RadASM\masm32\help\VKDebug.chm(帮助内容不是很全)

或直接查看 \RadASM\masm32\include\debug.inc

它还包括一个非常有用的宏 CTEXT, 这在用 invoke 调用有字符串参数的函数时非常方便.

使用 CTEXT 可以把前面那个 "最简单的 Win32 程序" 修改如下:

; Test4_11.asm
.386
.model flat, stdcall

include    windows.inc
include    kernel32.inc
include    debug.inc
includelib kernel32.lib
includelib debug.lib

include    user32.inc
includelib user32.lib

.code
start:
invoke MessageBox, NULL, CTEXT("Hello World!"), CTEXT("Hi"), MB_OK
invoke ExitProcess, NULL
end start