MASM是否组装多个源文件并将它们链接在一起? [英] Does MASM assembling multiple source files and linking them together?

问题描述

我试图查看asm语言是否支持基于链接的功能，例如"C"语言.例如.我有"m.asm":

I was trying to see if asm language support function based linked like "C" language. E.g. I have got "m.asm":

assume cs:code
code segment
start:
  mov ax,20h
  call s
  mov ah,4ch
  int 21h
code ends
end start

其中"s"是源代码中不存在的符号，然后我有了n.asm文件来定义符号(实际上是标签)

In which "s" is a symbol not existing in the source code, then I've got n.asm file to define a symbol (a label in fact)

code segment
s:
  mov bx,4h
  div bx
code ends

实际上m.asm无法编译，告诉我"s"是未定义的符号.如何解决此问题并满足我的要求?

In fact m.asm fails to compile, telling me that "s" is a symbol not defined. How can I resolve this problem and meet my request?

推荐答案

您需要声明函数s对于希望使用public在n.asm中访问其他模块(例如，通过call)的其他模块可见>指令，则需要使用m.asm中的extern指令将s声明为外部引用.

You need to declare function s as visible to other modules that wish to access it (e.g. via call) in n.asm using the public directive and you need to declare s as an external reference using the extern directive in m.asm.

这对于少量的声明是很好的，但是如果您的模块增长到足够大的大小，则可能需要使用include头文件来进行管理.

This is fine for a small number of declarations but if your modules grow to any substantial size you may want to use an include header files to manage that.

这篇关于MASM是否组装多个源文件并将它们链接在一起?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！