修改与内联汇编数组元素 [英] Modifying array elements with inline assembly

问题描述

是否有修改特定的数组元素与内联汇编的一种方式？

Is there a way of modifying specific array elements with inline assembly ?

int move[2];

我期待改变移动[0] 和移动[1] 在 __ ASM 。结果
我用汇编编码新手，主要是坚持到C ++，大概有一个很简单的答案。结果
到目前为止，我试图移动移动[1] 到寄存器，将我想要将其更改为到另一个数字，然后移动一成其他。我设法得到它的编译，但它不实际工作。

I'm looking to change move[0] and move[1] in __asm.
I am a novice with assembly coding, mainly stick to C++, and there is probably a very simple answer.
So far I've attempted to move move[1] into registers, move the number I want to change it to into another, and then move one into the other. I have managed to get it to compile but it doesnt actually work.

推荐答案

您可以使用类似 MOV阵列[类型数组*指数]值; ，例如：

You can use something like MOV array[TYPE array * index], value;, for example:

#include <stdio.h>

int main(int argc, char **argv) {
  int foo[] = {1, 2, 3};

  printf("%d\n", foo[0]);
  printf("%d\n", foo[1]);
  printf("%d\n", foo[2]);

  __asm {
    MOV foo[TYPE foo * 0], 11;
    MOV foo[TYPE foo * 1], 22;
    MOV foo[TYPE foo * 2], 33;
  };

  printf("%d\n", foo[0]);
  printf("%d\n", foo[1]);
  printf("%d\n", foo[2]);

  return 0;
}

键入将返回数组的一个元素的大小。输出：

TYPE will return the size of one element of the array. The output:

1
2
3
11
22
33

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