unexpected end of file error

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roticv

Joined: 19 Jun 2003
Posts: 374
Location: Singapore

roticv 11 Sep 2004, 09:03

I am just wondering what is causing unexpected end of file error

The code I am using is

Code:

int30h:                                         ;my first api 
        push    ds
        push    10h
        pop     ds
        cmp     ah, 1
        jz      .checkkey
        cmp     ah, 2
        jz      .getkey
        pop     ds
        iret
     .checkkey:
        cmp     [keycount], 0
        pop     ds
        jz      .nokey
        and     byte [esp+8],not (1 shl 6)      ; clear ZF
        iret
     .nokey:
        or      byte [esp+8],1 shl 6            ; set ZF
        iret
     .getkey:
        push    ebx
        cli                                     ;just in case
        xor     edx, edx                        ;[in] edi = buffer
     .getkeyloop:
        xor     eax, eax
        test    [keystatus], KSHIFT
        jz      .noshift
        mov     ecx, ASCIITableU
        jmp     @F
     .noshift:
        mov     ecx, ASCIITableL
     @@:
        movzx   eax, byte[keybuffer+edx]
        test    al, al
        js      @F
     .keyup:
        neg     al
        mov     ebx, 1                           ;keyup
     @@:
        mov     al, byte[eax+ecx]
        cmp     al, 20h
        jc      .specialkeys
        cmp     ebx, 1
        jz      @F
        stosb
      .cont:
        mov     ecx, [keycount]
        inc     ecx
        inc     edx
        cmp     edx, ecx
        jnz     .getkeyloop
        pop     ebx
        pop     ds
        iret
     .specialkeys:
        cmp     al, 1
        jz      .shift
        jmp     .cont
     .shift:
        xor     al, bl
        movzx   eax, al
        or      [keystatus], eax
        jmp     .cont

Which looks correct to me.... Perhaps more information should be given on why fasm is refusing to compile my code...

11 Sep 2004, 09:03

Tommy

Joined: 17 Jun 2003
Posts: 489
Location: Norway

Tommy 11 Sep 2004, 09:14

I guess it is "jz @F" after .keyup:

Code:

 @@:
        mov     al, byte[eax+ecx]
        cmp     al, 20h
        jc      .specialkeys
        cmp     ebx, 1
        jz      @F
        stosb

You don't have any @@ after that one... Wink

11 Sep 2004, 09:14

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8351
Location: Kraków, Poland

Tomasz Grysztar 11 Sep 2004, 09:15

There is "@F" jump to the next anonymous label in the line after "cmp ebx,1", but there is no next anonymous label defined there.

11 Sep 2004, 09:15

silkodyssey

Joined: 02 Oct 2003
Posts: 198
Location: St.Vincent & the Grenadines

silkodyssey 11 Sep 2004, 12:59

Quote:

I am just wondering what is causing unexpected end of file error

I hate this error and it's not very helpful at all. I hope we can get something better in future versions of fasm. Smile

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silkodyssey

11 Sep 2004, 12:59

roticv

Joined: 19 Jun 2003
Posts: 374
Location: Singapore

roticv 11 Sep 2004, 14:03

Thanks. I just forgot to change the label name..

11 Sep 2004, 14:03

Madis731

Joined: 25 Sep 2003
Posts: 2139
Location: Estonia

Madis731 12 Sep 2004, 11:40

Compiler doesn't know where WE want ie our proc/endp pair to be. It searches it until the end of file and if it hasn't found it yet, it wonders "Why on earth did this file end? ^o) "
This is our obligation to make a ready pair so we can code inside it not code until we feel to put an endp Wink

12 Sep 2004, 11:40

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8351
Location: Kraków, Poland

Tomasz Grysztar 12 Sep 2004, 12:49

I have made a special update of 1.55 packages today, there are some new error messages to replace the hated "unexpected end of file".

12 Sep 2004, 12:49

madmatt

Joined: 07 Oct 2003
Posts: 1045
Location: Michigan, USA

madmatt 13 Sep 2004, 17:26

Thank you very much Mr. Privalov! Glad to see an end to the 'end of file error'.
MadMatt

13 Sep 2004, 17:26

silkodyssey

Joined: 02 Oct 2003
Posts: 198
Location: St.Vincent & the Grenadines

silkodyssey 13 Sep 2004, 19:21

Glad to see the end of it as well Smile

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silkodyssey

13 Sep 2004, 19:21

Tommy

Joined: 17 Jun 2003
Posts: 489
Location: Norway

Tommy 13 Sep 2004, 19:23

Very good Privalov! Smile

13 Sep 2004, 19:23

MattBro

Joined: 08 Nov 2003
Posts: 37

MattBro 22 Sep 2004, 02:54

OK here is a dumb little routine to find the length of a C style string.
I had been using it for a while in fasm 1.51 and then decided to upgrade to 1.55. Surprisingly I get the dreaded

Error: unexpected end of file

message.

The code follows

Code:


 include '%fasminc%\win32ax.inc'



section '.data' data readable writeable
_nstr db '12345',0
_stmsg db 'The length of the string is '
_len db '0',0
_title db 'A window',0

.code

start:

stdcall StrLength, _nstr
add al,'0'
mov [_len],al
 invoke MessageBox,  HWND_DESKTOP, _stmsg, _title,MB_OK
        invoke  ExitProcess,0

; ( -- strlen)
proc StrLength, StringBuff
; get length of string StringBuff
; StringBuff ; pointer to string
;
; StringBuff must be null terminated
; incrementing eax. The value in eax is the string length
;
; returns: eax = length of string StringBuff
enter
mov edi, [StringBuff]
; dpush 0 ; character count
 mov eax,0 ; character count
; Aprintf 'finding strlen of %s ', dword [ptrString]
StrLength.top: ; top of loop
cmp [edi], byte 0 ; check for string null termination
je StrLength.done ; if null, jump out of loop and return
inc edi ; pointer to next byte
inc eax ; increment counterc
jmp StrLength.top ; back to top of loop
; jump here to return
StrLength.done:
return

.end start

The problem lies somewhere in the StrLength procedure.

-Matt

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22 Sep 2004, 02:54

MattBro

Joined: 08 Nov 2003
Posts: 37

MattBro 22 Sep 2004, 03:22

Well I'll be! I just answered my own question. Apparently the proc macro now requires termination with an endp macro! I must have missed that somewhere in the last few updates.

-Matt

22 Sep 2004, 03:22

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