On Thu, 25 Mar 1999, Chris Noe wrote:
> i386 kernel, boot assembly code rewrite
> - -- --- -- ----- - --- -- --- ----- --
> last updated [Thu Mar 25 14:11:33 1999]
>
> I was pretty bored one lonely day, and decided to brush up on my assembly
> knowledge by taking all of the Intel syntax i386 assembly, and rewriting
> it in AT&T (gas friendly) syntax.
>
> Pointless? Naw! Here are a few good things that came out of it:
>
> o The kernel is no longer dependent on as86/ld86. Wonderful!
>
> o Personally, I find AT&T style much more readable, not to
> mention that this is the *only* part of the kernel still using
> as86/ld86.
>
> o build.c is a bit smaller since it doesn't have to mess
> with minix style (aka ld86) output.
>
> o It's a patch that removes/tidies up code!
> Everybody loves those.
>
> Files touched:
> arch/i386/Makefile
> arch/i386/boot/bootsect.S
> arch/i386/boot/setup.S
> arch/i386/boot/video.S
> arch/i386/boot/Makefile
> arch/i386/boot/tools/build.c
> (up to date as of kernel v2.2.4)
>
> To-do:
> 1) Ask maintainers if it was alright for me to slash through their
> code like this. :)
>
> 2) There are still few minor bugs in gas' 16-bit code, so I had to
> hard-code one troublesome instruction. (Clearly marked in video.S)
> (maybe fixed in latest binutils? Haven't tested yet, will do ASAP)
>
> 3) I have no idea how to properly tell the linker where to find
> bootsect_kludge (in setup.S) from bootsect.S (line 245), so I just
> hacked the makefile to do "--defsym bootsect_kludge=0x220" since the
> offset into setup where bootsect_kludge should hide is always going to
> be 0x20. There's got to be a cleaner way, right? Somebody tell me how.
>
> 4) Fix wrapped comments.
>
> I had basically finished this last summer, but didn't want to even try and
> squeeze it into those last few 2.1's. Even if it wasn't the 'right' thing
> to do, I learned a bunch from it.. so don't be afraid to shoot me down (or
> talk me up, whichever the case may be). :)
>
> And of course this is planned for 2.3, I'm just looking for feedback
> beforehand.
>
> Comments please!
> (Martin, Linus, cc'ed because you appear to be the current maintainers)
>
> Chris Noe
> (stiker@northlink.com)
>
> --
> ---------------------------------------------------------
> #!/bin/perl -sp0777i<X+d*lMLa^*lN%0]dsXx++lMlN/dsM0<j]dsj
> $/=unpack('H*',$_);$_=`echo 16dio\U$k"SK$/SM$n\EsN0p[lN*1
> lK[d2%Sa2/d0$^Ixp"|dc`;s/\W//g;$_=pack('H*',/((..)*)$/)
> ---- http://online.offshore.com.ai/arms-trafficker/ -----
>
>
>
>
>
>
>
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.rutgers.edu
> Please read the FAQ at http://www.tux.org/lkml/
>
, JimL
+-----------------------------------------------------------------------+
| James W. Laferriere - Network Engineer - babydr@baby-dragons.com |
| System Techniques - 25416 - 22nd S. - Des-Moines, WA 98198 |
| Give me VMS -or- Give me Linux -but- only on AXP |
+-----------------------------------------------------------------------+
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/