Re: Opcode trap error on MC68010

[Toralf Lund <toralf at procaptura dot com>]

Toralf Lund wrote:

> I've now been able to load and start my m68k cross compiled code, but 
> I get an opcode trap during execution:
>
> PHYSICAL ADDRESS=00001000
>
> OPCO TRAP ERROR
>
>
> PC=00009C2A   ------------>   4A89                 DC.W    $4A89
> SR=2410=.S4X.... US=000FFD00 SS=000FFFE4
> VBR=00000000 SFC=07 DFC=06
> D0=FFFFFFFF D1=000127E8 D2=00000000 D3=00000000
> D4=00000000 D5=00000000 D6=00000000 D7=00000000
> A0=00011FD0 A1=00000000 A2=00000000 A3=00000000
> A4=00000000 A5=00000000 A6=000FFFE4 A7=000FFFE4
>
> I believe 00009C2A is part of the atexit routine (called before main), 
> and according to objdump, the instruction is
>
>    9c2a:       4a89            tstl %a1

Whooha. Messed up a bit, there. I forgot to include -m68000 on link 
line, so I got the cpu32 version of libc instead of the m68000 one. 
After updating the linker command I have "b2fc 0000       cmpaw #0,%a1" 
at this location, and the code doesn't crash. Well, actually, it does, 
but somewhere else. I need to debug a bit before I can tell more about 
that...

--
- Toralf



------
Want more information?  See the CrossGCC FAQ, http://www.objsw.com/CrossGCC/
Want to unsubscribe? Send a note to crossgcc-unsubscribe@sources.redhat.com