is it wrong for me to create eg: inside a PROC?

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vbVeryBeginner

Joined: 15 Aug 2004
Posts: 884
Location: \\world\asia\malaysia

vbVeryBeginner 13 Apr 2006, 22:48

i tried the following.

Code:

format PE console
entry start

include '%fasminc%\win32a.inc'

section '.code' code readable executable
start:
                xor  eax,eax
stdcall mytest,1,2,3,4
invoke  ExitProcess,0

proc mytest hwnd,msg,wparam,lparam
                mov  eax,1
call    t1
call    t3
                ret

t1:
call    t2
                mov  eax,2
                ret

t2:
                mov  eax,3
                ret

t3:
                mov  eax,4
                ret
endp

section '.idata' import data readable
        library kernel32,'KERNEL32.DLL',\
                        user32,  'USER32.DLL',\
                        gdi32,   'GDI32.DLL'

        include '%fasminc%\apia\Kernel32.inc'
        include '%fasminc%\apia\User32.inc'
        include '%fasminc%\apia\Gdi32.inc'

after "call mytest", the EAX value is 3.

13 Apr 2006, 22:48

UCM

Joined: 25 Feb 2005
Posts: 285
Location: Canada

UCM 14 Apr 2006, 01:18

well, the stack would be waaay imbalanced by then, proc macro redefines `ret' so each ret becomes ret 16 (in your case)

14 Apr 2006, 01:18

vbVeryBeginner

Joined: 15 Aug 2004
Posts: 884
Location: \\world\asia\malaysia

vbVeryBeginner 14 Apr 2006, 01:39

thanks ucm,
saw from olly too, retn 0x10
guess this is intended effect.

gonna take my t1: out from the proc Razz

[add]
just figured out, that i could

retn 0 (near)
ret 0

14 Apr 2006, 01:39

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