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

[Tom H. <to...@co...>]

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.

Tom

-- 
Tom Hughes (to...@co...)
http://compton.nu/