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rambo



Joined: 28 Feb 2005
Posts: 22
Location: posen, poland
rambo
i`m using fasm to make some object file, later linked with LINK.EXE from masm32 package. what`s the point? something is going wrong, when i`m trying to define more than 9 DATA sections. with 9 sections, after linking, RAW data in EXE output`s section is zeroed, as i want, but if i have 10, and more, sections, there are pieces of sections headers (!)..

linking this example will say more than thousand words:

Code:
format MS COFF
extrn "__imp__MessageBoxA@16" as MessageBox:dword
public _demo

section ".bss" data readable writeable
        rd 4*50
section ".bss" data readable writeable
        rd 4*50
section ".bss" data readable writeable
        rd 4*50
section ".bss" data readable writeable
        rd 4*50
section ".bss" data readable writeable
        rd 4*50
section ".bss" data readable writeable
        rd 4*50
section ".bss" data readable writeable
        rd 4*50
section ".bss" data readable writeable
        rd 4*50
section ".bss" data readable writeable
        rd 4*50
section ".bss" data readable writeable
        rd 4*50

section ".text" code readable executable

 _demo:
        push    0
        push    _caption
        push    _message
        push    0
        call    [MessageBox]
        ret

section ".data" data readable writeable

 _caption db "Win32 assembly",0
 _message db "Coffee time!",0
    


parameters:
link.exe /subsystem:windows /entry:demo main.obj d3d9.lib gdi32.lib kernel32.lib user32.lib

is it FASM bug?
i don`t think, that linker does mistake, because the same thing is happening with other linker (packer) - crinkler.
or am i stupid and not reading faq? :)


Last edited by rambo on 10 Aug 2005, 20:44; edited 1 time in total
Post 10 Aug 2005, 20:37
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UCM



Joined: 25 Feb 2005
Posts: 285
Location: Canada
UCM
Where did 'start' come from?

_________________
This calls for... Ultra CRUNCHY Man!
Ta da!! *crunch*
Post 10 Aug 2005, 20:41
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rambo



Joined: 28 Feb 2005
Posts: 22
Location: posen, poland
rambo
UCM wrote:
Where did 'start' come from?


which start? :)
it was from my original project.
Post 10 Aug 2005, 20:45
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Tomasz Grysztar
Assembly Artist


Joined: 16 Jun 2003
Posts: 7721
Location: Kraków, Poland
Tomasz Grysztar
I got:
main.obj : warning LNK4078: multiple ".bss" sections found with different attrib
utes (C03000C0)

remove the "data" flag from the '.bss' definitions and it goes OK.

Also, when you use "rb", it is not guaranteed to zero the data - it just reserves it. And Microsoft's linker for some reason treats the unititialized data correctly only when it's in valid '.bss' section. And the "data" flag marks the section as initialized data.
Post 10 Aug 2005, 20:53
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rambo



Joined: 28 Feb 2005
Posts: 22
Location: posen, poland
rambo
then i`m just a silly boy Smile Wink
works fine, thanks.
Post 10 Aug 2005, 21:45
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