试图执行组装阶乘但未造成堆栈溢出 [英] Trying to perform a factorial in assembly but causing stack overflow

问题描述

好了，我想从我的大学书考出一个阶乘程序，当我输入正确它如图所示，它给了我一个堆栈溢出错误。

它发生在该行推EBP 。谁能告诉我什么是错？

  code
主要PROC
    MOV EBP，0
    3推
    调用析因
    调用WriteDec
    调用CRLF
    出口
主要ENDP阶乘PROC    推EBP
    MOV EBP，ESP
    CMP EAX，0
    JA L1
    MOV EAX，1
    JMP L2    L1：
        十二月EAX
        推EAX
        调用析因    ReturnFact：
        MOV EBX，[EBP + 8]
        MUL EBX    L2：
        流行EBP
        RET 4阶乘ENDP
 

解决方案

这只是我或其他人认为你错过了一个

MOV EAX，[EBP + 8]

在（后声明）的函数的开始？
你没有得到从堆栈的说法它和0比较之前。

Ok, so I am trying to test out a factorial program from my college book, and when I type it correctly as shown, it gives me a stack overflow error.

It happens at the line push ebp. Can anyone tell me what is wrong?

.code
main PROC
    mov ebp,0
    push 3
    call Factorial
    call WriteDec
    call Crlf
    exit
main ENDP

Factorial PROC

    push ebp
    mov ebp,esp
    cmp eax,0
    ja L1
    mov eax,1
    jmp L2

    L1:
        dec eax
        push eax
        call Factorial

    ReturnFact:
        mov ebx,[ebp+8]
        mul ebx

    L2:
        pop ebp
        ret 4

Factorial ENDP

解决方案

It is just me or anyone else think that you missed a

mov eax, [ebp+8]

at the start of the function (after the prologue)? You are not getting the argument from the stack before comparing it with 0.

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