293d5b4394
Support probing on offline cross-architecture binary by adding getting the target machine arch from ELF and choose correct register string for the machine. Here is an example: ----- $ perf probe --vmlinux=./vmlinux-arm --definition 'do_sys_open $params' p:probe/do_sys_open do_sys_open+0 dfd=%r5:s32 filename=%r1:u32 flags=%r6:s32 mode=%r3:u16 ----- Here, we can get probe/do_sys_open from above and append it to to the target machine's tracing/kprobe_events file in the tracefs mountput, usually /sys/kernel/debug/tracing/kprobe_events (or /sys/kernel/tracing/kprobe_events). Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/147214229717.23638.6440579792548044658.stgit@devbox [ Add definition for EM_AARCH64 to fix the build on at least centos 6, debian 7 & ubuntu 12.04.5 ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
28 lines
859 B
C
28 lines
859 B
C
#ifdef DEFINE_DWARF_REGSTR_TABLE
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/* This is included in perf/util/dwarf-regs.c */
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/*
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* Reference:
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* http://refspecs.linuxfoundation.org/ELF/ppc64/PPC-elf64abi-1.9.html
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* http://refspecs.linux-foundation.org/elf/elfspec_ppc.pdf
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*/
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#define REG_DWARFNUM_NAME(reg, idx) [idx] = "%" #reg
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static const char * const powerpc_regstr_tbl[] = {
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"%gpr0", "%gpr1", "%gpr2", "%gpr3", "%gpr4",
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"%gpr5", "%gpr6", "%gpr7", "%gpr8", "%gpr9",
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"%gpr10", "%gpr11", "%gpr12", "%gpr13", "%gpr14",
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"%gpr15", "%gpr16", "%gpr17", "%gpr18", "%gpr19",
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"%gpr20", "%gpr21", "%gpr22", "%gpr23", "%gpr24",
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"%gpr25", "%gpr26", "%gpr27", "%gpr28", "%gpr29",
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"%gpr30", "%gpr31",
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REG_DWARFNUM_NAME(msr, 66),
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REG_DWARFNUM_NAME(ctr, 109),
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REG_DWARFNUM_NAME(link, 108),
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REG_DWARFNUM_NAME(xer, 101),
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REG_DWARFNUM_NAME(dar, 119),
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REG_DWARFNUM_NAME(dsisr, 118),
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};
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#endif
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