On 08/06/2013 08:02 PM, Kingsley, James Leonard wrote: > Attempting to use valgrind on my system gives me an 'unrecognised > instruction' error. I am reasonably sure that it's a valgrind issue >
Yes, it is. > vex amd64->IR: unhandled instruction bytes: 0xC4 0xE3 0xD9 0x6B 0x3D 0x4E > 0x19 0x6 > vex amd64->IR: REX=0 REX.W=1 REX.R=0 REX.X=0 REX.B=0 > vex amd64->IR: VEX=1 VEX.L=0 VEX.nVVVV=0x4 ESC=0F3A > vex amd64->IR: PFX.66=1 PFX.F2=0 PFX.F3=0 > ==25013== valgrind: Unrecognised instruction at address 0x4c37a00. > ==25013== at 0x4C37A00: __ieee754_log_sse2 (in /lib64/libm-2.15.so) This function has caused trouble before. See https://bugs.kde.org/show_bug.cgi?id=320965 > > Any suggestions on fixing this? No work-around really, other than recompiling libm with a suitable set of compiler flags (I would not know what those are). If you're brave and have some time, you might be interested in adding support for this instruction to valgrind. The code to look at would be in <valgrind>/VEX/priv/guest_amd64_toIR.c, function disInstr_AMD64_WRK and underneath. Florian ------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite! It's a free troubleshooting tool designed for production. Get down to code-level detail for bottlenecks, with <2% overhead. Download for free and get started troubleshooting in minutes. http://pubads.g.doubleclick.net/gampad/clk?id=48897031&iu=/4140/ostg.clktrk _______________________________________________ Valgrind-users mailing list Valgrind-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/valgrind-users
