Looping Program Doesn't Loop Correct Amount Of Times

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bybb

Joined: 17 Jan 2016
Posts: 1
Location: UK

bybb 17 Jan 2016, 20:33

I have made a simple program by using the examples that come with fasm, but I cannot get this to work. The program should come up with a message box 32 times, but only runs once. It compiles fine, but I cannot seem to make it work.

Here is code:

Code:

include 'win32ax.inc'

.code

  start:
        invoke  MessageBox,HWND_DESKTOP,"Welcome to hell >:D",invoke GetCommandLine,MB_OK
        inc [loopcount]
        cmp [loopcount], 20h
        jne start
        invoke  ExitProcess,0

  loopcount db 01h

.end start

[/code]

17 Jan 2016, 20:33

idle

Joined: 06 Jan 2011
Posts: 440
Location: Ukraine

idle 17 Jan 2016, 20:45

Code:

include 'win32ax.inc'

.code

  start:
        invoke  MessageBox,HWND_DESKTOP,"Welcome to hell >",invoke GetCommandLine,MB_OK
        inc [loopcount]
        cmp [loopcount], 20h
        jne start
        invoke  ExitProcess,0

.end start

section '' data readable writable
  loopcount db 01h

17 Jan 2016, 20:45

typedef

Joined: 25 Jul 2010
Posts: 2909
Location: 0x77760000

typedef 20 Jan 2016, 20:37

You might want to explain to him why you added the data section instead of just completing his code.

20 Jan 2016, 20:37

idle

Joined: 06 Jan 2011
Posts: 440
Location: Ukraine

idle 21 Jan 2016, 07:05

win32ax.inc

Code:

...
macro .data { section '.data' data readable writeable }

macro .code { section '.text' code readable executable } ;writes prohibited
...

21 Jan 2016, 07:05

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