flat assembler
Message board for the users of flat assembler.
 Home   FAQ   Search   Register 
 Profile   Log in to check your private messages   Log in 
flat assembler > Compiler Internals > fasm 1.72: generates code for empty functions

Author
Thread Post new topic Reply to topic
ShabbyBumblebutt



Joined: 02 Jan 2018
Posts: 5

fasm 1.72: generates code for empty functions


Code:

format PE GUI 4.0 DLL
entry DllEntryPoint

include 'win32a.inc'

section '.text' code readable executable

proc DllEntryPoint hinstDLL,fdwReason,lpvReserved
        mov     eax,TRUE
        ret
endp

proc funcA a,b,c,d
endp
proc funcW a,b,c,d
        xor eax,eax
        ret
endp

section '.edata' export data readable

  export 'FAKE.DLL',\
        funcA'funcA'funcW'funcW'





Code:

funcA:     55                             push        ebp
.0040100D89E5                           mov         ebp,esp
funcW:     55                             push        ebp
.0040101089E5                           mov         ebp,esp
.0040101231C0                           xor         eax,eax
.00401014C9                             leave
.00401015C21000                         retn        00010 ;




Such crap works in Masm (no code for empty function).
I tried to make two functions with same address, now i did it trough "funcW, 'funcA', funcW, 'funcW'" in export.
Post 02 Jan 2018, 01:02
View user's profile Send private message Reply with quote
ProMiNick



Joined: 24 Mar 2012
Posts: 130
Location: Russian Federation, Sochi

proc is macro that makes code
push ebp
mov ebp,esp
if symbol after proc is used. And yes it is used in edata section.

If you want that proc only declare label you should override proc.

masm is obsolete software and its syntax is obsolete too - use "label funcA at funcW" in fasm & you will no needed to override any macros in your case.
Post 02 Jan 2018, 08:31
View user's profile Send private message Send e-mail Reply with quote
Display posts from previous:
Post new topic Reply to topic

Jump to:  


< Last Thread | Next Thread >

Forum Rules:
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Main index   Download   Documentation   Examples   Message board
Copyright © 2004-2018, Tomasz Grysztar.
Powered by rwasa.