Please find the patch attached in the mail. Regards, Aneesh Bansal
From: openembedded-core-boun...@lists.openembedded.org [mailto:openembedded-core-boun...@lists.openembedded.org] On Behalf Of Khem Raj Sent: Friday, January 13, 2012 1:04 PM To: Patches and discussions about the oe-core layer Cc: Garg Vakul-B16394 Subject: Re: [OE-core] Valgrind : Unhanded instructions mfatbu and mfatbl On Thu, Jan 12, 2012 at 9:43 PM, Bansal Aneesh-B39320 <b39...@freescale.com<mailto:b39...@freescale.com>> wrote: Hello, PowerPC uses two alternate time base registers which are read from user space by using PPC instructions mfatbu and mfatbl . However these instructions are not supported by Valgrind. CPU : e500mc Here are the logs when an application executing such instruction is executed with Valgrind 3.7.0: dis_proc_ctl(ppc)(mfspr,SPR)(0x20F) disInstr(ppc): unhandled instruction: 0x7C0F82A6 primary 31(0x1F), secondary 678(0x2A6) ==2204== valgrind: Unrecognized instruction at address 0x10003dfc. ==2204== at 0x10003DFC: ??? (in /usr/bin/simple_crypto) ==2204== by 0x1000181B: ??? (in /usr/bin/simple_crypto) ==2204== by 0xFE179E7: ??? (in /lib/libpthread-2.13.so<http://libpthread-2.13.so>) ==2204== by 0x40EEA9B: ??? (in /lib/libc-2.13.so<http://libc-2.13.so>) ==2204== Your program just tried to execute an instruction that Valgrind ==2204== did not recognise. There are two possible reasons for this. ==2204== 1. Your program has a bug and erroneously jumped to a non-code ==2204== location. If you are running Memcheck and you just saw a ==2204== warning about a bad jump, it's probably your program's fault. ==2204== 2. The instruction is legitimate but Valgrind doesn't handle it, ==2204== i.e. it's Valgrind's fault. If you think this is the case or ==2204== you are not sure, please let us know and we'll try to fix it. ==2204== Either way, Valgrind will now raise a SIGILL signal which will ==2204== probably kill your program. We have developed a patch to fix the issue and submitted the patch upstream to Valgrind community for processing. how about you also submit the patch to oe-core as well so we can use it until the upstream patch lands in a release that we will use Regards, Aneesh Bansal Error! Filename not specified. Plot No. – 18 | Sector-16 A, Noida – 201301 Phone : 0120395 x3320 _______________________________________________ Openembedded-core mailing list Openembedded-core@lists.openembedded.org<mailto:Openembedded-core@lists.openembedded.org> http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-core
0001-add-mfatbu-mfatbl-instructions-support-in-Valgrind.patch
Description: 0001-add-mfatbu-mfatbl-instructions-support-in-Valgrind.patch
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