NetBSD-current/sparc install ISO no longer boots

[Andreas Gustafsson <gson%gson.org@localhost>]

Hi all,

The NetBSD-current SPARC install ISO no longer installs; it panics
during boot, at least on the qemu-based TNF automated test server.
The problem was introduced some time in the last few days.  Maybe it
is related to the switch of the sparc port to GCC 4.5, but it's hard
to tell because the switch was made at a point in time when the sparc
build was already broken...

The panic looks like this:

   Jumping to entry point 00004000 for type 00000005...
   >> NetBSD/sparc Secondary Boot, Revision 1.15 (Sat Aug 20 12:43:27 UTC 2011)
   Booting netbsd
   2981676+82236=0x2ec4b8
   OBP version 3, revision 2.25 (plugin rev 2)
   qemu: fatal: Trap 0x29 while interrupts disabled, Error state
   pc: f0006010  npc: f0006014
   General Registers:
   %g0-7: 00000000 00000200 00000000 00000001 00000034 00000fff f0006000 
ffd37170

   Current Register Window:
   %o0-7: 00000000 00000004 00000001 ffd32d98 ffd32e00 00000004 f01eb4c0 
ffd07880
   %l0-7: ffd7275c f0012ed8 f0012edc f01eb4f0 f01eb4ee f01cbef8 00000001 
f02e034f
   %i0-7: 04000fc5 ffd3713c 00000004 f01eb594 f01eb598 f01bc144 f01eb540 
f0012ecc

   Floating Point Registers:
   %f00: 000000000.000000 000000000.000000 000000000.000000 000000000.000000
   %f04: 000000000.000000 000000000.000000 000000000.000000 000000000.000000
   %f08: 000000000.000000 000000000.000000 000000000.000000 000000000.000000
   %f12: 000000000.000000 000000000.000000 000000000.000000 000000000.000000
   %f16: 000000000.000000 000000000.000000 000000000.000000 000000000.000000
   %f20: 000000000.000000 000000000.000000 000000000.000000 000000000.000000
   %f24: 000000000.000000

Full log at

  http://releng.netbsd.org/b5reports/sparc/build/2011.08.20.06.00.14/install.log

and additional logs via the "install: failed" links around

  
http://releng.netbsd.org/b5reports/sparc/commits-2011.08.html#2011.08.20.06.00.14

I am currently redoing some of the builds with a work-around for bin/45269
in place; this may help narrow things down a little bit.
-- 
Andreas Gustafsson, gson%gson.org@localhost