如何将数组发送到过程

Question

嗨我在做汇编8086 DES，我有很多数组，我也需要一些程序，但我不知道如何发送数组到一个过程。我试着用堆栈，但它没有奏效。你能帮我一下吗？我使用的是TASM

Answer 1

假设你有一个定义为字的数组：

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

你想传递给一个过程：

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