John Reiser <jreiser <at> BitWagon.com> writes: > > > vex mips->IR: unhandled instruction bytes: 0x0 0x0 0x0 0xE > > ==3262== valgrind: Unrecognised instruction at address 0x490fc04. > > ==3262== at 0x490FC04: ??? (in /lib/libstdc++.so.6.0.3) > > ==3262== by 0x490FBC8: ??? (in /lib/libstdc++.so.6.0.3) > > > We are using uclibc 0.9.28 running on Linux kernel 3.4.52. The MIPS > > processor is a MIPS 24Kc and the GCC toolchain version is gcc 3.4.4 > > Thank you for a good report, including those details about the environment. > To make it even better, which version of valgrind? ($ valgrind --version) > valgrind-3.9.0 was released recently. > > Is your CPU running big-endian or little-endian? One way interprets > ".byte 0,0,0,0xe" as a 'jal' instruction. For the other way, GNU gdb 6.8 > does not recognize it, which may mean the instruction is an architectural > extension or CPU-specific function: > GNU gdb 6.8 > (gdb) x/i 0 > 0x0 <_start>: jal 0x8000000 > 0x4 <_start+4>: 0xe > (gdb) x/2x 0 > 0x0 <_start>: 0x0e000000 0x0000000e > > Your next step is to file a bug report so that the developers don't lose > track of the problem. Go to https://bugs.kde.org/enter_bug.cgi? product=valgrind , > then enter the same info there as you posted here. This will maximize > the probability that valgrind developers will see and solve the problem. >
Thanks for the very quick reply. I've filed a bug report as you suggested here https://bugs.kde.org/show_bug.cgi?id=328147 The extra information you requested is included in the bug report and for completeness I'll repeat it here. The valgrind version is 3.9.0, we are running big-endian on the CPU. There is a suggestion from a colleague that there may be an issue to do with Native POSIX Linux Thread, support for which does not come into uClibc until 0.9.32 (we're running 0.9.28) but I have no experience in this area. Thanks, Julian ------------------------------------------------------------------------------ Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349351&iu=/4140/ostg.clktrk _______________________________________________ Valgrind-users mailing list Valgrind-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/valgrind-users
