我的汇编语言项目的 x86 代码中出现错误

Question

请修复以下代码行中的以下错误。我在 Visual Studio 中使用 x86 代码和 Irvine 文件：

• 我的程序中的第 98 行出现错误 A2032“寄存器使用无效”

  cmp eax, edx+7 ; Check if the end of the line is reached for the reviewer number

  .

• 我的代码第 70 行出现错误 MSB3721“命令”ml.exe /c /nologo /Sg /Zi /Fo"Debug\NDProject1.obj" /Fl"Project.lst" /I "c:\Irvine “ /W3 /errorReport:prompt /TaNDProject1.asm” 退出，代码为 1。”

  ”

• 我的代码第 30 行出现错误 A2006“未定义符号：OpenFile”

• 我的代码第 34 行出现错误 A2006“未定义符号：ReadLine”

附上我的代码：

INCLUDE Irvine32.inc

.DATA
reviewScores DWORD 4 DUP (5 DUP (0)) ; Two-dimensional array to store review scores (4 rows by 5 columns)

movieNames BYTE "A",0, "B",0, "C",0, "D",0, "E",0
filename BYTE "C:\Data\reviews.txt",0
buffer BYTE 200 DUP (?) ; Increase the buffer size to handle larger lines

.CODE
main PROC
    call ReadFromFile       ; Read movie review information from the file
    call CalculateTotalScores  ; Calculate total scores for each movie
    call DisplayReport      ; Display the report with total scores and the movie with the highest total score

    exit
main ENDP

; Procedure to read movie review information from the file
ReadFromFile PROC
    mov edx, OFFSET reviewScores ; Load the address of the array into edx
    mov ecx, 20                ; Total number of lines in the file (4 reviewers x 5 movies)

    mov ebx, 0                 ; ebx will be used to keep track of the current line number
    mov esi, OFFSET filename   ; Load the address of the file name into esi

ReadLoop:
    ; Open the file for reading
    mov edx, 0                ; Clear edx to use it as a flag for reading mode (0 = read)
    call OpenFile  <<<< line 30 >>>>

    ; Read a line from the file
    mov edx, OFFSET buffer    ; Load the address of the buffer into edx
    call ReadLine  <<<< line 34 >>>>

    ; Check if end of file reached
    cmp eax, 0
    je EndOfFile

    ; Parse the line to extract movie review information
    mov eax, OFFSET buffer
    call ParseLine

    ; Store the review score in the array
    mov eax, dword ptr [edx]  ; Load the review score (0-100) into eax
    mov ebx, dword ptr [edx+4]  ; Load the reviewer number (1-4) into ebx
    mov ecx, dword ptr [edx+8]  ; Load the movie number (0-4) into ecx
    mov edi, OFFSET reviewScores
    imul ebx, ebx, 5          ; Calculate the offset for the reviewer's row
    add edi, ebx
    add edi, ecx              ; Calculate the offset for the movie's column
    mov dword ptr [edi * 4], eax ; Store the review score in the array

    inc ebx                  ; Move to the next line
    jmp ReadLoop

EndOfFile:
    ; Close the file
    mov edx, 1               ; Set edx to 1 to use it as a flag for closing the file
    call CloseFile

    ret
ReadFromFile ENDP

; Procedure to parse a line and extract movie review information
ParseLine PROC
    mov edx, eax              ; Store the address of the line in edx

    ; Extract the movie number (0-4) from the line
    movzx ecx, byte ptr [edx] <<<< line 70 >>>> ; Load the first character of the line into ecx
    sub ecx, 'A'              ; Convert movie letter to index (0-4)
    mov [edx+8], ecx          ; Store the movie number in the buffer

    ; Extract the review rating (0-100) from the line
    mov eax, edx
    mov ecx, 0
ScanRating:
    inc eax                   ; Move to the next character in the line
    movzx ebx, byte ptr [eax] ; Load the next character
    cmp ebx, ','              ; Check if it's a comma
    je FoundComma             ; If yes, we found the end of the rating
    imul ecx, ecx, 10         ; Multiply the current rating by 10 to shift it left
    sub ebx, '0'              ; Convert character to numeric value
    add ecx, ebx              ; Add the numeric value to the rating
    jmp ScanRating

FoundComma:
    mov [edx], ecx            ; Store the review rating (0-100) in the buffer

    ; Extract the reviewer number (1-4) from the line
    mov eax, edx
    mov ecx, 0
ScanReviewer:
    inc eax                   ; Move to the next character in the line
    movzx ebx, byte ptr [eax] ; Load the next character
    sub ebx, '0'              ; Convert character to numeric value
    add ecx, ebx              ; Add the numeric value to the reviewer number
    cmp eax, edx+7 <<<< line 98 >>>> ; Check if the end of the line is reached for the reviewer number
    je DoneParsing            ; If yes, we are done parsing the line
    jmp ScanReviewer

DoneParsing:
    mov [edx+4], ecx          ; Store the reviewer number (1-4) in the buffer

    ret
ParseLine ENDP

; Procedure to calculate the total scores for each movie
CalculateTotalScores PROC
    mov edx, OFFSET reviewScores ; Load the address of the array into edx
    mov ebx, 20                  ; Total number of elements in the array (4 reviewers x 5 movies)
    xor ecx, ecx                 ; Initialize ecx to 0 for the total score

CalculateLoop:
    add ecx, dword ptr [edx]    ; Add the current review score to the total score
    add edx, 4                   ; Move to the next element in the array
    loop CalculateLoop

    ret
CalculateTotalScores ENDP

; Procedure to display the report with total scores and the movie with the highest total score
DisplayReport PROC
    mov edx, OFFSET reviewScores ; Load the address of the array into edx
    mov ebx, 0                   ; Initialize ebx to 0 to keep track of the movie with the highest total score
    mov ecx, 0                   ; Initialize ecx to 0 for the highest total score

    ; Calculate the total score for each movie and find the highest total score
    mov edi, 5                   ; Number of movies (5)
    mov esi, OFFSET movieNames   ; Load the address of the array of movie names into esi

CalculateMovieScores:
    push ecx                     ; Save the highest total score on the stack

    ; Calculate the total score for the current movie
    mov eax, edx
    xor ecx, ecx                 ; Initialize ecx to 0 for the total score of the current movie
    mov ebx, 0                   ; Initialize ebx to 0 for the reviewer index

CalculateMovieTotal:
    add ecx, dword ptr [eax]     ; Add the current review score to the total score of the current movie
    add eax, 20                  ; Move to the next movie's review score
    inc ebx                      ; Move to the next reviewer's review score
    cmp ebx, 4                   ; Check if we have processed all reviewers
    jle CalculateMovieTotal      ; If not, calculate the next reviewer's score

    ; Display the total score for the current movie
    pop eax                      ; Restore the highest total score from the stack to eax
    cmp ecx, eax                 ; Compare the current movie's total score with the highest total score
    jle NotHighestScore          ; If the current score is not the highest, skip displaying it

    mov ebx, eax                 ; Update the highest total score with the current movie's total score
    mov esi, OFFSET movieNames   ; Load the address of the array of movie names into esi
    call WriteString             ; Display the movie name
    mov eax, ecx                 ; Load the current movie's total score into eax
    call WriteDec                ; Display the total score
    call Crlf                   ; Move to the next line

NotHighestScore:
    add esi, 4                   ; Move to the next movie name
    dec edi                      ; Move to the next movie
    cmp edi, 0                   ; Check if we have processed all movies
    jg CalculateMovieScores      ; If not, calculate the next movie's score

    ret
DisplayReport ENDP

END main

这是reviews.txt文件：

D,84,2
A,90,3
A,87,4
B,35,4
B,100,1
C,75,1
D,84,1
B,87,2
A,0,2
C,25,2
D,45,3
E,35,3
A,90,1
B,100,3
C,75,3
E,35,1
C,78,4
E,35,2
D,100,4
E,0,4

谢谢你

我尝试了很多事情，但都失败了，真的需要一些帮助。

Answer 1

• 我的代码第 30 行出现错误 A2006“未定义符号：OpenFile”
• 我的代码第 34 行出现错误 A2006“未定义符号：ReadLine”

使用

INCLUDE Irvine32.inc

，您无法访问 OpenFile 或 ReadLine。
然而，该文件确实定义了下一个原型：

打开输入文件原型；以输入模式打开文件
从文件读取原型；从输入文件读取缓冲区

---

• 我的程序中的第 98 行出现错误 A2032“寄存器使用无效”
  

  cmp eax, edx+7 ; Check if the end of the line is reached for the reviewer number

  。

就像@PeterCordes 在评论中所写，

cmp eax, edx+7

指令不可编码。您需要将地址表达式

EDX + 7

放入其自己的寄存器中。
我建议使用以下解决方案，暂时将 EDX 寄存器提高 7，以便可以在

cmp eax, edx

指令中使用：

FoundComma:
    mov   [edx], ecx          ; Store the review rating (0-100) in the buffer
    ADD   EDX, 7              <<<< Temporarily change EDX >>>>
    ; Extract the reviewer number (1-4) from the line
    mov   eax, edx
    XOR   ECX, ECX
ScanReviewer:
    inc   eax                 ; Move to the next character in the line
    movzx ebx, byte ptr [eax] ; Load the next character
    sub   ebx, '0'            ; Convert character to numeric value
    add   ecx, ebx            ; Add the numeric value to the reviewer number
    cmp   eax, EDX            ; Check if the end of the line is reached for the reviewer number
    jne   ScanReviewer        ; If no, we are not done parsing the line
    SUB   EDX, 7              <<<< Restore EDX to what it was before >>>>
    mov   [edx+4], ecx        ; Store the reviewer number (1-4) in the buffer
    ret
ParseLine ENDP