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flat assembler > Compiler Internals > fasm 1.72: generates code for empty functions

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ShabbyBumblebutt



Joined: 02 Jan 2018
Posts: 5
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 .0040100D: 89E5 mov ebp,esp funcW: 55 push ebp .00401010: 89E5 mov ebp,esp .00401012: 31C0 xor eax,eax .00401014: C9 leave .00401015: C21000 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
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ProMiNick



Joined: 24 Mar 2012
Posts: 157
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masm is obsolete software and its syntax is obsolete too - use "label funcA at funcW" in fasm & you will no needed to override any macros in your case.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
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