Re: Ultrix compatibility?

[hbent%cs.oberlin.edu@localhost]

>
> On Oct 7, 2008, at 3:57 AM, David Brownlee wrote:
>
>> On Mon, 6 Oct 2008, hbent%cs.oberlin.edu@localhost wrote:
>>
>>> I'm at a loss here.  Normally I would go into the kernel source
>>> and throw
>>> in some printf statements, but I wasn't able to grok the code
>>> sufficiently
>>> to figure out where they should be going.  Does anyone have any
>>> suggestions?
>>
>>      You could try NetBSD 4 & NetBSD 3 to find out where the breakage
>>      was introduced. I suspect some of the changes since NetBSD-4 to
>>      introduce the new threading and MP code may have had a side
>>      effect, or some of the compat code may not have been updated
>>      fully...
>
> Run it with gdb and see what instruction it's failing on.
>

I already tried that.  gdb barfs because, unsurprisingly, it doesn't
understand the format of the ultrix executable:

# gdb flops-cc flops-cc.core
GNU gdb 6.5
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as
"vax--netbsdelf"..."/root/bmark/flops/flops-cc": not
in executable format: File format not recognized

Core was generated by `flops-cc'.
Program terminated with signal 4, Illegal instruction.
#0  0x00000002 in ??
    (2147483403, 2147483416, 2147483438, 2147483546, 2147483552,
2147483563, 0,
1818636078, 762540143, 1157653347, 792548942, 1953460082, 1752378927,
1107321714
, 1262702412, 1163544915, 7024957, 1027888976, 1869574703, 1835151220,
795570785
, 1886350438, 1095762035, 792545364, 1852400243, 1937059642, 1651715954,
7923585
05, 980314466, 1920169263, 1852400175, 1937059642, 1802514290, 1651715943,
79235
8505, 796029813, 795306864, 980314466, 1920169263, 825317423, 1647261266,
792358
505, 796029813, 1633906540, 1651715948, 792358505, 796029813, 1633906540,
176804
2348, 1330118766, 4019283, 1297237332, 863270461, 1409298482, 1129140805,
196695
2513, 1869507438, 1731882615, 1835088494, 594502458, 1647980600,
1197358444, 103
0906682, 1681542494, 1247690095, 1030124346, 1513769566, 2016427354,
842360375,
808857649, 58, 2147483336, 1, 2147483344, 7Error accessing memory address
0x8000
0000: No such file or directory.

-Henry Bent