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    Subject[RFC PATCH -tip 00/16] in-kernel x86 disassember
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    Hi,

    Here is a series of patches of the in-kernel x86 disassembler
    for the latest tip tree.
    This will show you a pretty disassembled code instead of
    just a digital code sequence when you gets a kernel panic etc.
    (I know, we also have script/decodecode for the panic use)

    This feature is not for users, but mainly for kernel developers
    who can understand disassembly code of x86 ;). This is just like
    a joke feature in kernel. (yeah, I spend my spare time for this.
    It's my fun :))

    Currently, this can disassemble only most popular instructions
    in-kernel, such as non-SSE, non-MMX, non-AVX, and so on, becuase
    these extended instructions are rarely used in kernel :)
    This series supports AT&T syntax, but not fully same as objdump.
    Still it doesn't decode instruction suffix of operand size
    (w,d,q etc).

    The series is also hosted on a repository on GitHub,
    you can get the latest version from below public repository.

    git://github.com/mhiramat/linux.git

    This series adds below features:

    - Debugfs disassembler interface for kernel function. You can disassemble
    running kernel function on-line.
    - Panic dump shows disassembly code instead of instruction byte stream.
    It generates more human-readable report. (I strongly recommend you to
    add a serial logger if it is enabled :))
    - Disassemble command for KDB. 'dis' command is now available.
    - User-land disassembly tool.

    Thank you,

    ---

    Masami Hiramatsu (16):
    x86: Split default64 flag from force64 flag
    x86: Change the order of segment prefix macro
    x86: Add bogus disassembler support
    x86: Show kernel symbol in disassembler
    x86: Disassemble x86-64 only instructions
    x86: Change asm syntax to AT&T-like one
    kdb: Provide original instruction modified by sw breakpoint
    x86/kprobes: Recover breakpoint instruction if KGDB knows
    x86: kernel function disassembly interface
    x86/disasm: Indicate modified instructions
    tracing/docs: add explanation about disassembler interface
    x86: Merge code dump in show_registers
    x86: Disassemble support in register dump
    x86: Indicate trapped address and probed address
    x86/kdb: Add x86 disassembe command
    tools/bogodis: Add bogus disassembler tool in userspace


    Documentation/trace/kprobetrace.txt | 14 +
    arch/x86/Kconfig.debug | 16 +
    arch/x86/include/asm/disasm.h | 14 +
    arch/x86/include/asm/inat.h | 38 ++
    arch/x86/include/asm/insn.h | 16 +
    arch/x86/include/asm/kdebug.h | 1
    arch/x86/include/asm/kprobes.h | 2
    arch/x86/kernel/dumpstack.c | 146 +++++++++
    arch/x86/kernel/dumpstack_32.c | 26 --
    arch/x86/kernel/dumpstack_64.c | 25 -
    arch/x86/kernel/kdebugfs.c | 159 +++++++++
    arch/x86/kernel/kgdb.c | 72 ++++
    arch/x86/kernel/kprobes.c | 9 +
    arch/x86/lib/Makefile | 18 +
    arch/x86/lib/disasm.c | 508 ++++++++++++++++++++++++++++++
    arch/x86/lib/insn.c | 2
    arch/x86/lib/mnemonic.c | 96 ++++++
    arch/x86/tools/gen-insn-attr-x86.awk | 7
    arch/x86/tools/gen-insn-mnemonic-x86.awk | 352 +++++++++++++++++++++
    include/linux/kdb.h | 3
    include/linux/kgdb.h | 1
    kernel/debug/debug_core.c | 14 +
    kernel/debug/kdb/kdb_main.c | 35 ++
    tools/bogodis/Makefile | 51 +++
    tools/bogodis/bogodis.c | 202 ++++++++++++
    25 files changed, 1759 insertions(+), 68 deletions(-)
    create mode 100644 arch/x86/include/asm/disasm.h
    create mode 100644 arch/x86/lib/disasm.c
    create mode 100644 arch/x86/lib/mnemonic.c
    create mode 100644 arch/x86/tools/gen-insn-mnemonic-x86.awk
    create mode 100644 tools/bogodis/Makefile
    create mode 100644 tools/bogodis/bogodis.c

    --
    Masami Hiramatsu <masami.hiramatsu@gmail.com>



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