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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 |
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Message-ID: | <089759ff-13d5-46d2-832d-b330d3ed3dca@v25g2000yqk.googlegroups.com> |
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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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