[K42-discussion] Problem debugging linux user mode apps with K42 remote gdb

[Patrick Bozeman]

This is from an early break in the process via DEBUGPROC

(gdb) print/x $pc
$1 = 0x1000702e1a08
(gdb) print/x $lr
$2 = 0x1000702e19d4
(gdb) print/x $r1
$3 = 0x100000029b70
(gdb) print/x $r2
$4 = 0x10008009fb38
(gdb) x/i $pc
0x1000702e1a08 <breakpoint+108>:        ld      r31,-32736(r30)
(gdb) x/i $lr
0x1000702e19d4 <breakpoint+56>: nop
(gdb) x/4xg $r1
0x100000029b70: 0x0000100000029bf0      0x000000000003e000
0x100000029b80: 0x00001000702e19d4      0x000000000003e000
(gdb) x/4xg (*((unsigned long long *) $r1))
0x100000029bf0: 0x0000100000029ef0      0x0000100000029e30
0x100000029c00: 0x00001000702e6b3c      0x000010000002aba0


This is from a tassertMsg(0, ...) in dup2.C

(gdb) print/x $pc
$1 = 0x1000702e1a08
(gdb) print/x $lr
$2 = 0x1000702e19d4
(gdb) print/x $r1
$3 = 0x10000002a8d0
(gdb) print/x $r2
$4 = 0x10008009fb38
(gdb) x/i $pc
0x1000702e1a08 <breakpoint+108>:        ld      r31,-32736(r30)
(gdb) x/i $lr
0x1000702e19d4 <breakpoint+56>: nop
(gdb) x/4xg $r1
0x10000002a8d0: 0x000010000002a950      0x0000000000000000
0x10000002a8e0: 0x00001000702e19d4      0x000000000000ffff
(gdb) x/4xg (*((unsigned long long *) $r1))
0x10000002a950: 0x000010000002ab70      0x00001000066425c0
0x10000002a960: 0x00001000702dcd4c      0x0000100006683c80


Bryan S Rosenburg wrote:
>
> Patrick,
>
> I can't think of anything you're doing wrong.  Next time you connect, 
> would you collect and publish some of the machine state?  To start 
> with, I'd like to see the output of:
>
> print/x $pc
> print/x $lr
> print/x $r1
> print/x $r2
> x/i $pc
> x/i $lr
> x/4xg $r1
> x/4xg (*((unsigned long long *) $r1))
>
> - Bryan
>
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