Question

我正在为使用Intel x86的项目组装程序，我需要获取数组的内容，我处于第一个位置，但是我需要获取另一个索引，并将其保存在寄存器中，所以我在做什么是：`

call calcIndexP1         ; this calculates the index of the array and saves the value in  indexMat
mov bl, [mineField]      ; this is the first position of array 
lea  ebx, [ebx+indexMat] ; here I load the adress of the array position 
mov ebx, ebx             ; i think with this i get the content of the ebx which is the position of array 
cmp ebx, 1               ; I compare its value with 1 and jmp to some other states
je  mina
jmp no_mina`

但是我听不懂它的内容。
我想这是因为即使值是1，它也总是无条件跳转。

Answer 1

解决方案取决于您如何定义 mineField

mineField 指向（bytes？）数组本身：

call calcIndexP1         ; calculates the index of the array
mov eax, [indexMat]
mov bl, [mineField+eax]  ; Content 
cmp bl, 1                ; I compare its value with 1 and jmp to some other states
je  mina
jmp no_mina

mineField 是一个变量，其内容指向（字节？）数组：

call calcIndexP1         ; calculates the index of the array
mov eax, [indexMat]
mov ebx, [mineField]     ; this is the first position of array 
mov bl, [ebx+eax]        ; Content 
cmp bl, 1                ; I compare its value with 1 and jmp to some other states
je  mina
jmp no_mina

英特尔x86阵列内容

1 个答案: