Is this a bug? "sizeof"?

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dead_body

Joined: 21 Sep 2005
Posts: 187
Location: Ukraine,Kharkov

dead_body 09 Feb 2006, 12:53

Code:

format PE GUI
entry start

section '.code' code readable executable

  start:
        mov eax,sizeof.buffer
        push 0 0 0 0
        Call [MessageBox]
        push    0
        call    [ExitProcess]

section '.data' data readable writeable
  buffer   db 1024 DUP(?)
section '.idata' import data readable writeable

  dd 0,0,0,RVA kernel_name,RVA kernel_table
  dd 0,0,0,RVA user_name,RVA user_table
  dd 0,0,0,0,0

  kernel_table:
    ExitProcess dd RVA _ExitProcess
    dd 0
  user_table:
    MessageBox dd RVA _MessageBoxA
    dd 0

  kernel_name db 'KERNEL32.DLL',0
  user_name db 'USER32.DLL',0

  _ExitProcess dw 0
    db 'ExitProcess',0
  _MessageBoxA dw 0
    db 'MessageBoxA',0

mov eax,sizeof.buffer - undefined symbol
As I remember, in old version this work normal. Or now it must be in another way?

09 Feb 2006, 12:53

Ivan2k2

Joined: 08 Sep 2004
Posts: 80
Location: Russia, Angarsk

Ivan2k2 09 Feb 2006, 13:25

if i not mistake, 'sizeof' works with structures

09 Feb 2006, 13:25

dead_body

Joined: 21 Sep 2005
Posts: 187
Location: Ukraine,Kharkov

dead_body 09 Feb 2006, 13:48

and what I must use instead "sizeof" ?
Is there another directive?

09 Feb 2006, 13:48

shoorick

Joined: 25 Feb 2005
Posts: 1614
Location: Ukraine

shoorick 09 Feb 2006, 14:01

BUFFSIZE = 1024 (or BUFFSIZE equ 1024)
...
mov ecx,BUFFSIZE
...
buffer db BUFFSIZE DUP(?)

09 Feb 2006, 14:01

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8392
Location: Kraków, Poland

Tomasz Grysztar 09 Feb 2006, 14:43

Code:

struc db [data]
{ common . db data
  sizeof.#. = $ - . }

09 Feb 2006, 14:43

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