> Undefined info command: "regs".  Try "help info".
> (gdb) info regi
>           zero       at       v0       v1       a0       a1       a2       a3
>  R90  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
>             t0       t1       t2       t3       t4       t5       t6       t7
>  R98  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
>             s0       s1       s2       s3       s4       s5       s6       s7
>  R106 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
>             t8       t9       k0       k1       gp       sp       s8       ra
>  R114 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
>             sr       lo       hi      bad    cause       pc
>       00400004 00000000 00000000 00000000 00000000 a0020004
>            fsr      fir
>       00000000 00000000
> (gdb)
> 
> It's displaying stuff (and further runs appear correct), but the register
> number in the left column needs 90 subtracted.  (Well, I'm sure there's
> a real fix, but...)

Ah, oops.  The real fix IS `regnum - 90' (well regnum % NUM_REGS).  See 
attached.

Andrew