Visual Studio 2019 中抛出的异常/未处理的异常

Question

我不断收到一条消息，说“在 HWProject4.exe 中的 0x007B1D3C 处抛出异常：0xC0000005：访问冲突读取位置 0x00000068。”在说 ret 20 的那一行。我认为这是因为我错误地访问了我的堆栈，但我不知道如何（我在纸上画了堆栈，不知道我在做什么）。

项目的指导方针是：

我的代码：

include Irvine32.inc
ExitProcess Proto, dwexitcode: DWORD

.data
    num1    DWORD   1h
    num2    DWORD   2h
    num3    DWORD   3h
    num4    DWORD   4h
    num5    DWORD   5h
    numofVar    BYTE    5

    title1  BYTE    "System Parameters on Stack",0
    titledivider    BYTE    "---------------------------",0
    addresstxt  BYTE    "Address: ",0
    arrow   BYTE    " => ",0
    contenttxt  BYTE    "Content: ",0

.code

mdisplayText MACRO text, newLine:=<0>
    mov edx, OFFSET text
    call WriteString

    COMMENT !
    cmp newline, 0
    jz done
    mov ecx, newLine
L1:
    call crlf
    loop L1
    !

    IF (newLine GT 0)
        mov ecx, newLine
    L1:
        call crlf
        loop L1
    ELSE
        
    ENDIF


;done:
    ;ret

ENDM

runLevelTwo PROC ;,
    ;numbofVars:BYTE
    
    push ebp 
    mov ebp, esp
    pushad

    mov esi, ebp
    add esi, 8
    mov eax, 0
    mov eax, esi
    ;movzx ecx, numbofVars
    mov ecx, 5

displaying:
    mdisplayText addresstxt
    call WriteHex
    mdisplayText 'h'

    mdisplayText arrow

    mdisplayText contenttxt
    mov eax, [esi]
    call WriteHex
    mdisplayText 'h'
    call crlf

    add esi, type DWORD
    mov eax, esi
    loop displaying

    popad
    pop ebp

    ret 
runLevelTwo ENDP
    

runLevelOne PROC
    push num5
    push num4
    push num3
    push num2
    push num1
    
    call runLevelTwo ;numofVar
    ret 20

runLevelOne ENDP

main PROC
    mdisplayText title1, 1

    mov edx, OFFSET titledivider
    call WriteString
    call crlf

    call runLevelOne
    

    exit
main ENDP
END main