https://bugs.kde.org/show_bug.cgi?id=357734

            Bug ID: 357734
           Summary: "unhandled instruction 0x1AC12D8C" for ARM64/AARCH64
           Product: valgrind
           Version: unspecified
          Platform: Debian stable
                OS: Linux
            Status: UNCONFIRMED
          Severity: minor
          Priority: NOR
         Component: memcheck
          Assignee: jsew...@acm.org
          Reporter: noloa...@gmail.com

Please ignore this bug report. The issue below was fixed in Valgrind 3.11. It
will be experienced by Linaro users because the distro supplies Valgrind 3.10.
We are providing the report for others who experience the finding but receive 0
search results.

We are using a LeMaker HiKey for testing (http://www.amazon.com/dp/B019O3QTSA).
It runs Linaro/AARCH64. We experienced and illegal opcode:

    disInstr(arm64): unhandled instruction 0x1AC12D8C
    disInstr(arm64): 0001'1010 1100'0001 0010'1101 1000'1100

The offending line of code, rotlVariable, is a simple "rotate register" (as
opposed to a "rotate immediate").

*****

It was experienced with 3.11:

    $ /usr/bin/valgrind --version
    valgrind-3.10.0

*****

ARM64 front end: data_processing_register
disInstr(arm64): unhandled instruction 0x1AC12D8C
disInstr(arm64): 0001'1010 1100'0001 0010'1101 1000'1100
==8610== valgrind: Unrecognised instruction at address 0x542a90.
==8610==    at 0x542A90: rotlVariable<unsigned int> (misc.h:1224)
==8610==    by 0x542A90: CryptoPP::CAST128::Enc::ProcessAndXorBlock(unsigned
char const*, unsigned char const*, unsigned char*) const (cast.cpp:43)
==8610==    by 0x483E8B: ProcessBlock (cryptlib.h:726)
==8610==    by 0x483E8B: BlockTransformationTest(CipherFactory const&,
CryptoPP::BufferedTransformation&, unsigned int) (validat1.cpp:1240)
==8610==    by 0x4869EB: ValidateCAST() (validat1.cpp:2031)
==8610==    by 0x48A4E3: ValidateAll(bool) (validat1.cpp:111)
==8610==    by 0x47391F: Validate(int, bool, char const*) (test.cpp:870)
==8610==    by 0x479B67: main (test.cpp:342)

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