78ff1d6d8b
Use macro name prefixed with "LIBUNWIND_ARCH" for better understanding that the regs used by callbacks of libunwind are arch specific. The real regs used should be defined in the wrapper file of "unwind-libunwind-local.c" for each supported arch. Signed-off-by: He Kuang <hekuang@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ekaterina Tumanova <tumanova@linux.vnet.ibm.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1466578626-92406-2-git-send-email-hekuang@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
#ifndef __UNWIND_H
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#define __UNWIND_H
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#include <linux/types.h>
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#include "event.h"
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#include "symbol.h"
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#include "thread.h"
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struct unwind_entry {
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struct map *map;
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struct symbol *sym;
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u64 ip;
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};
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typedef int (*unwind_entry_cb_t)(struct unwind_entry *entry, void *arg);
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struct unwind_libunwind_ops {
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int (*prepare_access)(struct thread *thread);
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void (*flush_access)(struct thread *thread);
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void (*finish_access)(struct thread *thread);
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int (*get_entries)(unwind_entry_cb_t cb, void *arg,
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struct thread *thread,
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struct perf_sample *data, int max_stack);
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};
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#ifdef HAVE_DWARF_UNWIND_SUPPORT
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int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
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struct thread *thread,
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struct perf_sample *data, int max_stack);
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/* libunwind specific */
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#ifdef HAVE_LIBUNWIND_SUPPORT
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#ifndef LIBUNWIND__ARCH_REG_ID
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#define LIBUNWIND__ARCH_REG_ID(regnum) libunwind__arch_reg_id(regnum)
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#endif
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#ifndef LIBUNWIND__ARCH_REG_SP
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#define LIBUNWIND__ARCH_REG_SP PERF_REG_SP
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#endif
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#ifndef LIBUNWIND__ARCH_REG_IP
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#define LIBUNWIND__ARCH_REG_IP PERF_REG_IP
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#endif
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int LIBUNWIND__ARCH_REG_ID(int regnum);
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int unwind__prepare_access(struct thread *thread, struct map *map);
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void unwind__flush_access(struct thread *thread);
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void unwind__finish_access(struct thread *thread);
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#else
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static inline int unwind__prepare_access(struct thread *thread __maybe_unused,
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struct map *map __maybe_unused)
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{
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return 0;
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}
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static inline void unwind__flush_access(struct thread *thread __maybe_unused) {}
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static inline void unwind__finish_access(struct thread *thread __maybe_unused) {}
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#endif
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#else
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static inline int
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unwind__get_entries(unwind_entry_cb_t cb __maybe_unused,
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void *arg __maybe_unused,
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struct thread *thread __maybe_unused,
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struct perf_sample *data __maybe_unused,
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int max_stack __maybe_unused)
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{
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return 0;
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}
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static inline int unwind__prepare_access(struct thread *thread __maybe_unused,
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struct map *map __maybe_unused)
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{
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return 0;
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}
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static inline void unwind__flush_access(struct thread *thread __maybe_unused) {}
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static inline void unwind__finish_access(struct thread *thread __maybe_unused) {}
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#endif /* HAVE_DWARF_UNWIND_SUPPORT */
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#endif /* __UNWIND_H */
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