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126 lines
3.5 KiB
126 lines
3.5 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _PROBE_FINDER_H |
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#define _PROBE_FINDER_H |
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#include <stdbool.h> |
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#include "intlist.h" |
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#include "build-id.h" |
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#include "probe-event.h" |
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#include <linux/ctype.h> |
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#define MAX_PROBE_BUFFER 1024 |
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#define MAX_PROBES 128 |
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#define MAX_PROBE_ARGS 128 |
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#define PROBE_ARG_VARS "$vars" |
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#define PROBE_ARG_PARAMS "$params" |
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static inline int is_c_varname(const char *name) |
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{ |
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/* TODO */ |
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return isalpha(name[0]) || name[0] == '_'; |
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} |
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#ifdef HAVE_DWARF_SUPPORT |
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#include "dwarf-aux.h" |
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/* TODO: export debuginfo data structure even if no dwarf support */ |
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/* debug information structure */ |
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struct debuginfo { |
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Dwarf *dbg; |
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Dwfl_Module *mod; |
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Dwfl *dwfl; |
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Dwarf_Addr bias; |
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const unsigned char *build_id; |
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}; |
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/* This also tries to open distro debuginfo */ |
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struct debuginfo *debuginfo__new(const char *path); |
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void debuginfo__delete(struct debuginfo *dbg); |
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/* Find probe_trace_events specified by perf_probe_event from debuginfo */ |
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int debuginfo__find_trace_events(struct debuginfo *dbg, |
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struct perf_probe_event *pev, |
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struct probe_trace_event **tevs); |
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/* Find a perf_probe_point from debuginfo */ |
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int debuginfo__find_probe_point(struct debuginfo *dbg, u64 addr, |
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struct perf_probe_point *ppt); |
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int debuginfo__get_text_offset(struct debuginfo *dbg, Dwarf_Addr *offs, |
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bool adjust_offset); |
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/* Find a line range */ |
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int debuginfo__find_line_range(struct debuginfo *dbg, struct line_range *lr); |
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/* Find available variables */ |
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int debuginfo__find_available_vars_at(struct debuginfo *dbg, |
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struct perf_probe_event *pev, |
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struct variable_list **vls); |
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/* Find a src file from a DWARF tag path */ |
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int find_source_path(const char *raw_path, const char *sbuild_id, |
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const char *comp_dir, char **new_path); |
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struct probe_finder { |
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struct perf_probe_event *pev; /* Target probe event */ |
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struct debuginfo *dbg; |
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/* Callback when a probe point is found */ |
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int (*callback)(Dwarf_Die *sc_die, struct probe_finder *pf); |
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/* For function searching */ |
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int lno; /* Line number */ |
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Dwarf_Addr addr; /* Address */ |
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const char *fname; /* Real file name */ |
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Dwarf_Die cu_die; /* Current CU */ |
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Dwarf_Die sp_die; |
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struct intlist *lcache; /* Line cache for lazy match */ |
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/* For variable searching */ |
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#if _ELFUTILS_PREREQ(0, 142) |
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/* Call Frame Information from .eh_frame */ |
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Dwarf_CFI *cfi_eh; |
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/* Call Frame Information from .debug_frame */ |
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Dwarf_CFI *cfi_dbg; |
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#endif |
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Dwarf_Op *fb_ops; /* Frame base attribute */ |
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unsigned int machine; /* Target machine arch */ |
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struct perf_probe_arg *pvar; /* Current target variable */ |
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struct probe_trace_arg *tvar; /* Current result variable */ |
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bool skip_empty_arg; /* Skip non-exist args */ |
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}; |
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struct trace_event_finder { |
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struct probe_finder pf; |
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Dwfl_Module *mod; /* For solving symbols */ |
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struct probe_trace_event *tevs; /* Found trace events */ |
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int ntevs; /* Number of trace events */ |
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int max_tevs; /* Max number of trace events */ |
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}; |
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struct available_var_finder { |
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struct probe_finder pf; |
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Dwfl_Module *mod; /* For solving symbols */ |
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struct variable_list *vls; /* Found variable lists */ |
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int nvls; /* Number of variable lists */ |
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int max_vls; /* Max no. of variable lists */ |
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bool child; /* Search child scopes */ |
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}; |
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struct line_finder { |
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struct line_range *lr; /* Target line range */ |
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const char *fname; /* File name */ |
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int lno_s; /* Start line number */ |
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int lno_e; /* End line number */ |
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Dwarf_Die cu_die; /* Current CU */ |
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Dwarf_Die sp_die; |
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int found; |
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}; |
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#endif /* HAVE_DWARF_SUPPORT */ |
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#endif /*_PROBE_FINDER_H */
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