pxeloader problem: BTX halted

[Ruslan Ermilov]

On Thu, Feb 26, 2004 at 05:22:33PM -0800, Brooks Davis wrote:
[...]
> This commit broke PXE booting:
> 
> -----
> ru          2004/02/09 06:11:58 PST
> 
>   FreeBSD src repository
> 
>   Modified files:
>     sys/boot/i386        Makefile.inc
>     sys/boot/i386/boot0  Makefile
>     sys/boot/i386/boot2  Makefile
>     sys/boot/i386/btx/btx Makefile
>     sys/boot/i386/btx/btxldr Makefile
>     sys/boot/i386/btx/lib Makefile
>     sys/boot/i386/cdboot Makefile
>     sys/boot/i386/kgzldr Makefile
>     sys/boot/i386/loader Makefile
>     sys/boot/i386/mbr    Makefile
>     sys/boot/i386/pxeldr Makefile
>   Log:
>   - Factor out -nostdlib to an upper level Makefile.inc.
>  
>   - Now that bsd.prog.mk deals with programs linked with -nostdlib
>     better, and has a notion of an "internal" program, use PROG
>     where possible.  This has a good impact on the contents of
>     .depend files and causes programs to be linked with cc(1).
> 
>   XXX: boot2 couldn't be converted as it's actually two programs.
> 
>   Tested on:      i386, amd64
> -----
> 
> I verified this with a binary search using perforce syncing against a
> local checkout of //depot/vendor/freebsd/src/.  At 2004/02/09:06:15
> pxeldr works.  At 2004/02/09:06:16 it dies.  The only files that change
> in this time frame are these files in sys/boot.
> 
> Specifically the problem is rev 1.73 of sys/boot/i386/loader/Makefile.  A
> tip of tree checkout with rev 1.73 removed PE boots.
> 
So, does backing it out solve your problem, if you downgrade only
sys/boot/ to the date prior to this commit?  I doubt it, because
I've verified that my changes produce identical binaries.  The
only difference now is because vers.o and ../btx/lib/crt.o are
linked into the loader.sym binary in a slightly different order.
By making some insignificant changes to loader/Makefile I've been
able to verify that I still get the identical binaries (for all
of sys/boot/i386/) with my changes, after I saw your first
complaint in this thread.


Cheers,
-- 
Ruslan Ermilov
FreeBSD committer
ru at FreeBSD.org
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