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| From: | Rugxulo <rugxulo AT gmail DOT com> |
| Newsgroups: | comp.os.msdos.djgpp |
| Subject: | Re: GAS ".code16" and DJASM quirks ... |
| Date: | Wed, 11 Nov 2009 13:03:03 -0800 (PST) |
| Organization: | http://groups.google.com |
| Lines: | 47 |
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| To: | djgpp AT delorie DOT com |
| DJ-Gateway: | from newsgroup comp.os.msdos.djgpp |
| Reply-To: | djgpp AT delorie DOT com |
Hi,
On Nov 11, 2:48=A0am, Martin Str|mberg <a DOT DOT DOT AT sister DOT ludd DOT ltu DOT se> wrote:
>
> How do you link? If you use GNU ld you need to mess with linker scripts.
> I've written small .com files using gas and ld. I've also recoded
> FDXMS using gas and ld.
>
> I remember it was hard to get rid of the extra zeroes before the real
> code. (Bug in ld, perhaps?) I think I just skipped .org 0x100 and
> instead used nothing or .org 0 and let ld with the correct script deal
> with it.
>
> If you wait and are lucky I might dig up some of what I've written.
No hurry, esp. since I already have FDXMS. (My only complaint is AT&T,
ugh.)
http://www.ibiblio.org/pub/micro/pc-stuff/freedos/files/dos/fdxms/
Quoting from makefile :
LD =3D ld -T link_script --oformat binary -Map $*.map -s
link_script :
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D
SECTIONS
{
.text 0 : {
*(.text)
etext =3D . ; _etext =3D .;
}
.data : {
*(.data)
edata =3D . ; _edata =3D .;
}
.bss SIZEOF(.data) + ADDR(.data) :
{
*(.bss)
*(COMMON)
end =3D . ; _end =3D .;
}
}
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D
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