Assembly 为什么我的汇编程序没有创建/删除目录/文件

我的老师分配给我一个项目，用汇编语言编写DOS程序。程序应创建/删除/重命名文件/目录并更改文件属性。我正在使用masm611。 我的程序中包括了dos.inc。该程序分为两个文件，第一个是pro.asm，第二个是code.asm

//多斯公司

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;
;  Syntax:    @MkDir path [,segment]
;
;             @RmDir path [,segment]
;
;             @ChDir path [,segment]
;
;  Summary:   Creates, deletes, or changes to the specified directory
;
;  Arguments: <path>        Offset of ASCIIZ string containing
;                           directory. Must be offset address.
;
;             <segment>     Segment of path; DS if none given.
;
;  Returns:   If carry: set, error code in AX
;
;  Modifies:  AX, DX; DS if segment changed
;
;  Uses:      Interrupt 21h Function 39h
;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
@MkDir MACRO path:REQ, segmnt
    __LdAdr dx, <path>
    IFNB    <segmnt>
        __LdSeg ds, <segmnt>
    ENDIF
    mov     ah, 39h
    int     21h
ENDM

; 3Ah
@RmDir MACRO path:REQ, segmnt
    __LdAdr dx, <path>
    IFNB    <segmnt>
        __LdSeg ds, <segmnt>
    ENDIF
    mov     ah, 3Ah
    int     21h
ENDM

; 3Bh
@ChDir MACRO path:REQ, segmnt
    __LdAdr dx, <path>
    IFNB    <segmnt>
        __LdSeg ds, <segmnt>
    ENDIF
    mov     ah, 3Bh
    int     21h
ENDM

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;
;  Syntax:    @DelFile path [,segment]
;
;  Summary:   Deletes a specified file
;
;  Arguments: <path>        Offset of ASCIIZ file specification. Must
;                           be an offset address.
;
;             <segment>     Segment of path; DS if none given.
;
;  Returns:   If carry: set, error code in AX
;
;  Modifies:  AX, DX; DS if segment changed
;
;  Uses:      Interrupt 21h Function 41h
;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
@DelFile MACRO path:REQ, segmnt
    __LdAdr dx, <path>
    IFNB    <segmnt>
        __LdSeg ds, <segmnt>
    ENDIF
    mov     ah, 41h
    int     21h
ENDM

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;
;  Syntax:    @MakeFile path [,[attrib] [,[segment] [,kind]]]
;
;  Summary:   Creates a file
;
;  Arguments: <path>        ASCIIZ string of file. Must be an offset
;                           address.
;
;             <attrib>      File attribute; 0 is default if none given.
;
;             <segment>     Segment of address string; DS if not given.
;
;             <kind>        If none given, a file is created even if one
;                           already exists. Under DOS 3.x, "tmp" can be
;                           given to create a unique file or "new" to
;                           create a file only if one doesn't already
;                           exist.
;
;  Returns:   If carry: clear, file handle in AX
;
;  Modifies:  AX, DX, CX; DS if segment changed
;
;  Uses:      Interrupt 21h Function 3Ch, 5Ah, 5Bh
;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
@MakeFile MACRO path:REQ, atrib:=<0>, segmnt, kind
    IFDIF   <atrib>, <0>
        mov     cx, atrib
    ELSE
        sub     cx, cx
    ENDIF
    __LdAdr dx, <path>
    IFNB    <segmnt>
        __LdSeg ds, <segmnt>
    ENDIF
    IFIDNI  <kind>, <tmp>
        mov     ah, 5Ah
    ELSEIFIDNI <kind>, <new>
        mov    ah, 5Bh
    ELSE
        mov    ah, 3Ch
    ENDIF
    int     21h
ENDM

//代码.asm

start PROC

;this function starts the program
;input=none ouput=none
;MOV ah,0ah
;MOV DX,SI
;INT 21h
do:

    @cls
    CALL showDate
    CALL showMenu
    CALL newLine
    CALL getCharInput
    CMP BL,49   ;49 is ASCI for 1
    JE CDirectory   ;if BL is equals to 49 then jump to create directory
    CMP BL,50   ;50 is ASCI for 2
    JE CFile    ;if BL is equals to 50 then jump to create file
    CMP BL,51   ;51 is ASCI for 3
    JE DDirectory   ;if BL is equals to 51 then jump to delete directory
    CMP BL,52   ;52 is ASCI for 4
    JE DFile    ;if BL is equals to 52 then jump to delete file
    CMP BL,53   ;53 is ASCI for 5
    JE RDirectory   ;if BL is equals to 53 then jump to rename directory
    CMP BL,54   ;54 is ASCI for 6
    JE RFile    ;if BL is equals to 54 then jump to rename file
    CMP BL,55   ;55 is ASCI for 7
    JE ChAttributes ;if BL is equals to 55 then jump to change attributes of a file
    CMP BL,56   ; 56 is ASCI for 8
    JE Exit     ; until BL equals to 56
    JMP do

CDirectory:

    CALL makeDir
    JMP do

CFile:

    CALL makeFile
    JMP do

DDirectory:

    CALL rmDir
    JMP do

DFile:
    CALL rmFile
    JMP do

RDirectory:

    CALL rnDir
    JMP do
RFile:

    CALL rnFile
    JMP do

ChAttributes:

    CALL chFAttrib
    JMP do

Exit:
    @exit
RET

start EndP

clearAllReg PROC

;this function sets AX,BX,CX and DX equals to 0
;input=none output=none

MOV AX,0
MOV BX,0
MOV CX,0
MOV DX,0
RET

clearAllReg EndP

showMenu PROC

;this function show menu on the screen
;input=none output=DX

LEA DX,MSG1
MOV AH,9
INT 21h
RET

showMenu EndP

makeDir PROC
;MOV ah,2
;MOV dl,'a'
;INT 21h
MOV AX,offset PATH
@MkDir AX
CALL pressAnyKey
RET
makeDir EndP

makeFile PROC
;MOV ah,2
;MOV dl,'b'
;INT 21h
MOV AX,offset PATHF
@MakeFile AX
CALL pressAnyKey
RET
makeFile EndP

rmDir PROC
;MOV ah,2
;MOV dl,'c'
;INT 21h
MOV AX,offset PATH
@RmDir AX
CALL pressAnyKey
RET
rmDir EndP

rmFile PROC
;MOV ah,2
;MOV dl,'d'
;INT 21h
MOV AX,offset PATHF
@DelFile AX
CALL pressAnyKey
RET
rmFile EndP


rnDir PROC
MOV ah,2
MOV dl,'e'
INT 21h
CALL pressAnyKey
RET
rnDir EndP

rnFile PROC
MOV ah,2
MOV dl,'f'
INT 21h
CALL pressAnyKey
RET
rnFile EndP

chFAttrib PROC
MOV ah,2
MOV dl,'g'
INT 21h
CALL pressAnyKey
RET
chFAttrib EndP

newLine PROC

;Adds new line
;Input=none output=none

MOV DL,LF
MOV AH,2
INT 21h
MOV DL,CR
INT 21h
RET

newLine ENDP

getCharInput PROC

;this function takes input from user
;input=none output=BX

PUSH AX     ;saving state
CALL newLine
MOV dl,'?'
MOV AH,2
INT 21h
MOV AH,1
INT 21h
MOV BX,AX
POP AX      ;restoring state
RET

getCharInput EndP

pressAnyKey PROC
PUSH AX     ;Saving state

LEA DX,AnyKeyMsg
MOV AH,9
INT 21h
MOV AH,1
INT 21h

POP AX      ;restoring state
RET
pressAnyKey EndP

showDate PROC

@GetTime
RET
showDate EndP

---

那么问题是什么呢？不创建目录不可见的代码真的很难调试！我敢打赌，

路径

应该是以零结尾的，但它似乎不是。进位标志是否设置在（不可见）

int 21h

之后？如果是，ax中的错误号是多少？好的，这很有帮助。我看到你的路径是零终止的

PATH

。还是不工作？好的，宏返回时带有进位标志，

ax

未触及（这是我看不到的部分）。因此，检查

@MkDir

之后的进位标志-要么

jc error

要么

jnc good

。如果不起作用，应该设置。如果您没有显示

ax

的例程，请逐步执行它（不要尝试“逐步”执行dos-在进入

int 21h

…假设调试时使用

p

）。在RBIL中查找错误代码（如果没有，请获取！）。我觉得你的代码“看起来”不错。“应该”起作用。：）对

C\：

的权限可能有问题？好的，“拒绝访问”的错误代码是5。任何其他错误都是个谜。如果你明白了，试着以root用户身份运行（我认为Windows称之为“admin”）。。。或者尝试在当前目录中创建一个子目录（只需关闭

c\：

）。勇气！

start PROC

;this function starts the program
;input=none ouput=none
;MOV ah,0ah
;MOV DX,SI
;INT 21h
do:

    @cls
    CALL showDate
    CALL showMenu
    CALL newLine
    CALL getCharInput
    CMP BL,49   ;49 is ASCI for 1
    JE CDirectory   ;if BL is equals to 49 then jump to create directory
    CMP BL,50   ;50 is ASCI for 2
    JE CFile    ;if BL is equals to 50 then jump to create file
    CMP BL,51   ;51 is ASCI for 3
    JE DDirectory   ;if BL is equals to 51 then jump to delete directory
    CMP BL,52   ;52 is ASCI for 4
    JE DFile    ;if BL is equals to 52 then jump to delete file
    CMP BL,53   ;53 is ASCI for 5
    JE RDirectory   ;if BL is equals to 53 then jump to rename directory
    CMP BL,54   ;54 is ASCI for 6
    JE RFile    ;if BL is equals to 54 then jump to rename file
    CMP BL,55   ;55 is ASCI for 7
    JE ChAttributes ;if BL is equals to 55 then jump to change attributes of a file
    CMP BL,56   ; 56 is ASCI for 8
    JE Exit     ; until BL equals to 56
    JMP do

CDirectory:

    CALL makeDir
    JMP do

CFile:

    CALL makeFile
    JMP do

DDirectory:

    CALL rmDir
    JMP do

DFile:
    CALL rmFile
    JMP do

RDirectory:

    CALL rnDir
    JMP do
RFile:

    CALL rnFile
    JMP do

ChAttributes:

    CALL chFAttrib
    JMP do

Exit:
    @exit
RET

start EndP

clearAllReg PROC

;this function sets AX,BX,CX and DX equals to 0
;input=none output=none

MOV AX,0
MOV BX,0
MOV CX,0
MOV DX,0
RET

clearAllReg EndP

showMenu PROC

;this function show menu on the screen
;input=none output=DX

LEA DX,MSG1
MOV AH,9
INT 21h
RET

showMenu EndP

makeDir PROC
;MOV ah,2
;MOV dl,'a'
;INT 21h
MOV AX,offset PATH
@MkDir AX
CALL pressAnyKey
RET
makeDir EndP

makeFile PROC
;MOV ah,2
;MOV dl,'b'
;INT 21h
MOV AX,offset PATHF
@MakeFile AX
CALL pressAnyKey
RET
makeFile EndP

rmDir PROC
;MOV ah,2
;MOV dl,'c'
;INT 21h
MOV AX,offset PATH
@RmDir AX
CALL pressAnyKey
RET
rmDir EndP

rmFile PROC
;MOV ah,2
;MOV dl,'d'
;INT 21h
MOV AX,offset PATHF
@DelFile AX
CALL pressAnyKey
RET
rmFile EndP


rnDir PROC
MOV ah,2
MOV dl,'e'
INT 21h
CALL pressAnyKey
RET
rnDir EndP

rnFile PROC
MOV ah,2
MOV dl,'f'
INT 21h
CALL pressAnyKey
RET
rnFile EndP

chFAttrib PROC
MOV ah,2
MOV dl,'g'
INT 21h
CALL pressAnyKey
RET
chFAttrib EndP

newLine PROC

;Adds new line
;Input=none output=none

MOV DL,LF
MOV AH,2
INT 21h
MOV DL,CR
INT 21h
RET

newLine ENDP

getCharInput PROC

;this function takes input from user
;input=none output=BX

PUSH AX     ;saving state
CALL newLine
MOV dl,'?'
MOV AH,2
INT 21h
MOV AH,1
INT 21h
MOV BX,AX
POP AX      ;restoring state
RET

getCharInput EndP

pressAnyKey PROC
PUSH AX     ;Saving state

LEA DX,AnyKeyMsg
MOV AH,9
INT 21h
MOV AH,1
INT 21h

POP AX      ;restoring state
RET
pressAnyKey EndP

showDate PROC

@GetTime
RET
showDate EndP