1895 2012-01-11 23:19:10 +0000 valgrind : Unhanded instructions mfatbu and mfatbl 2012-03-08 18:42:46 +0000 1 1 7 Build System, Metadata & Runtime OE-Core core unspecified x86 ppc RESOLVED FIXED No update Medium normal 1.2 M3 1 aneesh.bansal dongxiao.xu meta.mr.watcher meta.watcher richard.purdie --- --- --- oldest_to_newest 18103 0 313 aneesh.bansal 2012-01-11 23:19:10 +0000 Created attachment 313 Patch to add support for mfatbu and mfatbl in valgrind 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 not supported by Valgrind. CPU : e500mc Here are the logs when an application executing such instruction is executed with Valgrind: dis_proc_ctl(ppc)(mfspr,SPR)(0x20F) disInstr(ppc): unhandled instruction: 0x7C0F82A6 primary 31(0x1F), secondary 678(0x2A6) ==2204== valgrind: Unrecognised 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) ==2204== by 0x40EEA9B: ??? (in /lib/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 path to fix the issue. Kindly find it attached. 18911 1 richard.purdie 2012-03-08 18:42:46 +0000 Fiexed in http://git.yoctoproject.org/cgit.cgi/poky/commit/?id=d3d11016de28e955d492bc174be2bfac90a78265 313 2012-01-11 23:19:10 +0000 2012-01-11 23:19:10 +0000 Patch to add support for mfatbu and mfatbl in valgrind 0001-add-mfatbu-mfatbl-instructions-support-in-Valgrind.patch application/octet-stream 5264 aneesh.bansal RnJvbSA3MWNkNzY1ODNhYmY4MTlkZTVhZGM3YjY2OTUxNDUzZmYxOTYyODc1IE1vbiBTZXAgMTcg MDA6MDA6MDAgMjAwMQpGcm9tOiBBbmVlc2ggQmFuc2FsIDxhbmVlc2guYmFuc2FsQGZyZWVzY2Fs ZS5jb20+CkRhdGU6IFRodSwgMTIgSmFuIDIwMTIgMTc6MDI6MzkgKzA1MzAKU3ViamVjdDogW1BB VENIXSBhZGQgbWZhdGJ1L21mYXRibCBpbnN0cnVjdGlvbnMgc3VwcG9ydCBpbiBWYWxncmluZApW YWxncmluZCBkb2VzIG5vdCBzdXBwb3J0IGFsdGVybmF0ZSB0aW1lIGJhc2UgcmVnaXN0ZXJzIHVz ZWQgYnkgUFBDIGluc3RydWN0aW9ucyBtZmF0YnUgYW5kIG1mYXRibC4KClVwc3RyZWFtIFN0YXR1 cyA6IFBlbmRpbmcKCi0tLQogLi4udXBwb3J0LWZvci1QUEMtaW5zdHJ1Y3Rpb25zLW1mYXRidS1t 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