Mr. Mitnick,
Please, try the latest version of Valgrind (3.9) from svn trunk. It may
help to solve your problem.
Best regards,
Vasily Golubev
On Wed, Sep 18, 2013 at 1:45 AM, Lu Mitnick <king19880...@gmail.com> wrote:
> Hello all,
>
> I use valgrind 3.8.1 with an arm executable. However the valgrind output
> the error message:
>
> ==1276== disInstr(arm): unhandled instruction: 0xEEFA0BEF cond=14(0xE)
> 27:20=239(0xEF) 4:4=0 3:0=15(0xF)
> ==1276== valgrind: Unrecognised instruction at address 0x25afc.
> ==1276== at 0x25AFC: crude_dragon_weakness (in
> /home/spec_exe/445.gobmk/exe/gobmk_base.armhf-gcc47)
> ==1276== Your program just tried to execute an instruction that Valgrind
> ==1276== did not recognise. There are two possible reasons for this.
> ==1276== 1. Your program has a bug and erroneously jumped to a non-code
> ==1276== location. If you are running Memcheck and you just saw a
> ==1276== warning about a bad jump, it's probably your program's fault.
> ==1276== 2. The instruction is legitimate but Valgrind doesn't handle it,
> ==1276== i.e. it's Valgrind's fault. If you think this is the case or
> ==1276== you are not sure, please let us know and we'll try to fix it.
> ==1276== Either way, Valgrind will now raise a SIGILL signal which will
> ==1276== probably kill your program.
> ==1276==
> ==1276== Process terminating with default action of signal 4 (SIGILL)
> ==1276== Illegal opcode at address 0x25AFC
> ==1276== at 0x25AFC: crude_dragon_weakness (in
> /home/spec_exe/445.gobmk/exe/gobmk_base.armhf-gcc47)
>
> I disassemble the executable and find out that the illegal instruction is
> vcvt.f64.s32
> d16, d16, #1. I am wondering whether vcvt.f64.s32 is unsupported under
> valgrind or I have misuse valgrind?
>
> Thanks a lot
>
>
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--
Best Regards,
Vasily
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