[parisc-linux] ["CSA Test Drive" <TestDrive@compaq.com>] FW: Some issues

[Randolph Chung]

> The code doesn't seem to trap on a A500 which I believe is a PA8500.
> I think we need to look at bits 0..1 of the coprocessor configuration
> register to determine instruction validity.  See table 8-6 on page 8-11.

it does cause a trap actually, we just don't usually print it. 

FP assist exception at 0x10433
FP VZOUICxxxxCQCQCQCQCQCRMxxTDVZOUI ->
   00000000000000000000000001000000

i'm confused tho because that iaoq doesn't point where i thought it
might point. is this because of delayed exceptions?

(oh, as an aside, looks like there's a small objdump bug :-)
00010428 <ull2dbl>:
   10428:       0f d9 12 81     stw r25,-10(sr0,sp)
   1042c:       0f da 12 89     stw r26,-c(sr0,sp)
   10430:       2f c1 10 16     fldd -10(sr0,sp),fr22
   10434:       e8 40 d0 00     bve (rp)
   10438:       32 c2 aa 04     fcnv Disassembler botch.

(should be fcnv,udw,dbl %fr22,%fr4)

randolph
-- 
Randolph Chung
Debian GNU/Linux Developer, hppa/ia64 ports
http://www.tausq.org/