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x86英特尔汇编程序仅在NASM中编译

masm nasm x86 assembly

Luke Blevins · 技术社区 · 7 年前

http://www.nasm.us/doc/nasmdoc2.html#section-2.2 Windows是否要求以与基于Unix的操作系统不同的方式调用中断?

最后,我需要知道是否有更有效的方法来实现相同的结果。

HelloWorld组装程序:

section .data                              ;Constant Data Section
    userMsg db 'What is your name?'        ;Request Name Input
    lengthMsg equ $-userMsg                ;Set length of request

    returnMsg db 'Hello there, '           ;Return Message
    lengthRet equ $-returnMsg              ;Set length of returned message

section .bss
    number resb 5

section .text
    global _start


_start:
    mov eax, 4                             ;Print first message to screen 
    mov ebx, 1
    mov ecx, userMsg
    mov edx, lengthMsg
    int 80h

    mov eax, 3
    mov ebx, 2
    mov ecx, number
    mov edx, 5
    int 80h

    mov eax, 4
    mov ebx, 1
    mov ecx, returnMsg
    mov edx, lengthRet
    int 80h

    mov eax, 4
    mov ebx, 1
    mov ecx, number
    mov edx, 5
    int 80h

    mov eax, 1
    mov ebx, 0
    int 80h

这些是组装文件时显示的错误。

Microsoft (R) Macro Assembler Version 6.14.8444
Copyright (C) Microsoft Corp 1981-1997.  All rights reserved.

 Assembling: C:\Projects\theapp.asm
C:\Projects\theapp.asm(1) : error A2008: syntax error : section
C:\Projects\theapp.asm(2) : error A2034: must be in segment block
C:\Projects\theapp.asm(3) : error A2034: must be in segment block
C:\Projects\theapp.asm(5) : error A2034: must be in segment block
C:\Projects\theapp.asm(6) : error A2034: must be in segment block
C:\Projects\theapp.asm(8) : error A2008: syntax error : section
C:\Projects\theapp.asm(9) : error A2008: syntax error : number
C:\Projects\theapp.asm(11) : error A2008: syntax error : section
C:\Projects\theapp.asm(12) : error A2008: syntax error : global
C:\Projects\theapp.asm(15) : error A2034: must be in segment block
C:\Projects\theapp.asm(16) : error A2085: instruction or register not accepted in current CPU mode
C:\Projects\theapp.asm(17) : error A2085: instruction or register not accepted in current CPU mode
C:\Projects\theapp.asm(18) : error A2085: instruction or register not accepted in current CPU mode
C:\Projects\theapp.asm(19) : error A2085: instruction or register not accepted in current CPU mode
C:\Projects\theapp.asm(20) : error A2034: must be in segment block
C:\Projects\theapp.asm(22) : error A2085: instruction or register not accepted in current CPU mode
C:\Projects\theapp.asm(23) : error A2085: instruction or register not accepted in current CPU mode
C:\Projects\theapp.asm(24) : error A2085: instruction or register not accepted in current CPU mode
C:\Projects\theapp.asm(25) : error A2085: instruction or register not accepted in current CPU mode
C:\Projects\theapp.asm(26) : error A2034: must be in segment block
C:\Projects\theapp.asm(28) : error A2085: instruction or register not accepted in current CPU mode
C:\Projects\theapp.asm(29) : error A2085: instruction or register not accepted in current CPU mode
C:\Projects\theapp.asm(30) : error A2085: instruction or register not accepted in current CPU mode
C:\Projects\theapp.asm(31) : error A2085: instruction or register not accepted in current CPU mode
C:\Projects\theapp.asm(32) : error A2034: must be in segment block
C:\Projects\theapp.asm(34) : error A2085: instruction or register not accepted in current CPU mode
C:\Projects\theapp.asm(35) : error A2085: instruction or register not accepted in current CPU mode
C:\Projects\theapp.asm(36) : error A2085: instruction or register not accepted in current CPU mode
C:\Projects\theapp.asm(37) : error A2085: instruction or register not accepted in current CPU mode
C:\Projects\theapp.asm(38) : error A2034: must be in segment block
C:\Projects\theapp.asm(40) : error A2085: instruction or register not accepted in current CPU mode
C:\Projects\theapp.asm(41) : error A2085: instruction or register not accepted in current CPU mode
C:\Projects\theapp.asm(42) : error A2034: must be in segment block
C:\Projects\theapp.asm(45) : error A2088: END directive required at end of file
_
Assembly Error
Press any key to continue . . .

1 回复 | 直到 7 年前

Cody Gray 7 年前

NASM ,它使用的语法与MASM(微软的汇编程序)略有不同。这就是为什么会出现语法错误。例如,虽然NASM section .data section .text ,MASM .data 和 .code

您的代码也是为Linux编写的。您可以判断,因为它正在通过调用中断80h进行系统调用( int 80h

mov eax, 1
mov ebx, 0
int 80h

退出流程。在Windows上,您可以调用 ExitProcess API函数,该函数由操作系统附带的kernel32.dll库导出。这些操作系统API函数的原型随 Windows SDK 在C标题中( Windows.h ). 您可以使用以下工具 h2inc.exe MASM32 libraries ,他们为你做了这些(还有更多)。

然而,请注意,如果您真的想用汇编语言编写真正的程序,则只需要担心所有这些特定于操作系统的东西。如果你只是想汇编语言是如何工作的,那么这就是不必要的复杂性。在汇编语言中执行的基本算术和位运算在所有操作系统上都是一样的,因此这是您应该重点学习的内容。为了避免很多挫折,请确保您的教程/书籍与汇编程序相匹配和

int ). 因此,无论如何,你最终都会为Windows大量重写代码,这对你学习除Windows编程之外的任何东西都没有帮助。如果你想学习Windows编程,那么从汇编语言中学习是毫无意义的。从C开始执行,如下所示 the classic book (5th edition only ) 。所有API调用都是