Question

你好我在汇编程序8086中做DES而且我有很多数组，我也需要一些程序，但我不知道如何将数组发送到一个程序。我尝试使用堆栈但它没有工作。你能帮我个忙吗？我正在使用TASM

Answer 1

假设你有一个单词数组定义为：

myArray dw 10, 9, 8, 7, 6, 5, 4, 3, 2, 1
numItems dw 10

你想把它传递给一个程序：

push myArray  ; the address of the array
mov ax, [numItems]
push ax       ; the length of the array
call myProc
; if you want the caller to clean up ...
add sp, 4  ; adjust sp to get rid of params

然后myProc将是：

myProc:
    mov bp, sp ; save stack pointer
    mov cx, [bp+4] ; cx gets the number of items
    mov bx, [bp+6] ; bx gets the address of the array
    ; at this point, you can address the array through [bx]
    mov ax, [bx+0} ; first element of the array
    mov ax, [bx+2] ; second element of the array
    ret 4  ; cleans up the stack, removing the two words you'd pushed onto it
    ; or, if you want the caller to clean up ...
    ret

如何将数组发送到过程

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