Re: [Valgrind-users] Unrecognized Instruction in Ubuntu ARM library

[Jim S. <ji...@ji...>]

On 1/9/2016 7:11 PM, Tom Hughes wrote:
> On 09/01/16 22:34, Jim Starkey wrote:
>
>> Running Ubuntu/Mate on a Raspberry Pi 2, I get the following error:
>>
>>     disInstr(arm): unhandled instruction: 0xF1010200
>>                       cond=15(0xF) 27:20=16(0x10) 4:4=0 3:0=0(0x0)
>
> See https://bugs.kde.org/show_bug.cgi?id=322935 but the short version 
> is that the code has an insane "optimisation" that temporarily changes 
> the endianism of the processor and there's no way it's ever likely to 
> be supported in valgrind.
>
> I believe, from a brief examination when somebody hit this the other 
> day, that libarmmem is just optimised version of some routines like 
> memcpy that are already in the normal C library, so you can just drop 
> it and use the normal C library versions when valgrinding.
>

I appreciate the response.  It wasn't what I was hoping for, of course, 
but it beats spending a couple of days bashing my head against the wall.

Thanks.