Re: [Qemu-devel] Support for NetLogic XLP Processors

[Leon Alrae <leon.alrae@imgtec.com>]

On 25/03/2015 14:44, Leon Alrae wrote:
> Hi Duarte,
> 
> On 25/03/2015 14:20, Duarte Silva wrote:
>> On Wednesday 25 March 2015 13:13:14 James Hogan wrote:
>>> Hi Duarte,
>>>
>>> On 22/03/15 11:13, Duarte Silva wrote:
>>>> Hi guys,
>>>>
>>>> I have been struggling to get some binaries compiled for NetLogic XLP
>>>> processor to run under QEMU. I have tried a bunch of things (most going
>>>> back and forth) and always get the following error message:
>>>>
>>>> qemu: uncaught target signal 4 (Illegal instruction) - core dumped
>>>> Illegal instruction
>>>>
>>>> I tried to debug it using GDB but to no avail. Does anybody have ideas?
>>>> I'm
>>>> running QEMU 2.2.1.
>>>
>>> It sounds like the program had an instruction that QEMU doesn't
>>> recognise, or doesn't think should be allowed on the current CPU which
>>> you've set with -cpu. You might be able to find out what that
>>> instruction is by putting this on your qemu command line:
>>>
>>>  -singlestep -d in_asm
>> Hi James,
>>
>> thanks for the help :) I have tried with all the CPU's available. None of them 
>> worked, so I just leave it as undefined. It seems the offending instruction is 
>> "udi4".
>>
>> (...)
>> IN: 
>> 0x765d1fa4:  udi4       a0,v0,zero,0x0
> 
> According to this line you are trying to use MIPS32 CPU whereas I
> presume you would like MIPS64R2? Please try 5KEf CPU for example which
> is available in qemu-mips64 and qemu-mips64el QEMU binaries for big and
> little endian respectively.

I just noticed the QEMU version you are using and it doesn't contain
5KEf and 5KEc CPUs. Please try MIPS64R2-generic.

Leon