x86汇编极限新手查询:“无效指令操作数"? [英] x86 assembly extreme novice inquiry: "invalid instruction operands"?

问题描述

下面的代码只是我目前正在尝试编写的程序的一小部分，但程序的其他部分没有相关性，所以我只粘贴了必要的部分.无论如何，我想要做的是将 inputLoopCounter 中存储的值移动到 ecx 中，以确定循环应该执行多少次.但是，当我尝试组装这个程序时，我收到了问题标题中提到的错误.有人能解释一下原因吗?

.datainputLoopCounter BYTE -1.代码mov ecx,inputLoopCounter

解决方案

一种可能的解决方案是将 inputLoopCounter BYTE -1 替换为 inputLoopCounter DWORD -1.>

The code below is only a small fraction of the program I am currently attempting to write, but no other parts of the program are relevant, so I only pasted what was necessary. Anyway, what I am trying to do is move the value stored within inputLoopCounter into ecx in order to determine how many times a loop should execute. However, when I attempt to assemble this program, I get the error mentioned in the question title. Can anybody explain the reason for this?

.data
inputLoopCounter BYTE -1

.code
mov   ecx,inputLoopCounter

解决方案

One possible solution would be to replace inputLoopCounter BYTE -1 by inputLoopCounter DWORD -1.

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