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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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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>
23 lines
622 B
C
23 lines
622 B
C
#ifndef _PERF_DWARF_REGS_H_
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#define _PERF_DWARF_REGS_H_
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#ifdef HAVE_DWARF_SUPPORT
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const char *get_arch_regstr(unsigned int n);
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/*
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* get_dwarf_regstr - Returns ftrace register string from DWARF regnum
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* n: DWARF register number
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* machine: ELF machine signature (EM_*)
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*/
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const char *get_dwarf_regstr(unsigned int n, unsigned int machine);
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#endif
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#ifdef HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
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/*
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* Arch should support fetching the offset of a register in pt_regs
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* by its name. See kernel's regs_query_register_offset in
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* arch/xxx/kernel/ptrace.c.
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*/
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int regs_query_register_offset(const char *name);
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#endif
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#endif
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