Problem in sys/boot/i386/cdboot/cdboot.S with clang @237770

[David Wolfskill]

Running on:

FreeBSD g1-227.catwhisker.org 9.0-STABLE FreeBSD 9.0-STABLE #200 237701M: Thu Jun 28 06:31:33 PDT 2012     root at g1-227.catwhisker.org:/usr/obj/usr/src/sys/CANARY  i386

I was able to build

FreeBSD g1-227.catwhisker.org 9.0-STABLE FreeBSD 9.0-STABLE #201 237770M: Fri Jun 29 04:46:48 PDT 2012     root at g1-227.catwhisker.org:/usr/obj/usr/src/sys/CANARY  i386

OK using gcc, but with clang (separate bootable slice), I get whines and
a failure:

clang -O2 -pipe  -I/usr/src/sys/boot/i386/cdboot/../common -ffreestanding -mpreferred-stack-boundary=2  -mno-mmx -mno-3dnow -mno-sse -mno-sse2 -mno-sse3 -msoft-float -std=gnu99 -Qunused-arguments    -c /usr/src/sys/boot/i386/cdboot/cdboot.S
  .code16
         ^
/usr/src/sys/boot/i386/cdboot/cdboot.S:144:3: error: ambiguous instructions require an explicit suffix (could be 'orb', 'orw', 'orl', or 'orq')
  or $0x1,0x8(%bx) # kargs->bootflags |=
  ^
/usr/src/sys/boot/i386/cdboot/cdboot.S:272:10: error: .code16 not supported yet
  .code16
         ^
/usr/src/sys/boot/i386/cdboot/cdboot.S:597:10: error: .code16 not supported yet
  .code16
         ^
*** [cdboot.o] Error code 1
1 error

(I've been doing these "parallel gcc/clang" builds of stable/9 on
a daily basis for a few weeks, now; thus is the first time I've
encountered a problem like this.)

More complete logs are available for interested folks -- I do the builds
within script(1).

Peace,
david
-- 
David H. Wolfskill				david at catwhisker.org
Depriving a girl or boy of an opportunity for education is evil.

See http://www.catwhisker.org/~david/publickey.gpg for my public key.
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