108 строки
2.9 KiB
C
108 строки
2.9 KiB
C
#ifndef _PROBE_FINDER_H
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#define _PROBE_FINDER_H
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#include <stdbool.h>
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#include "util.h"
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#include "probe-event.h"
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#define MAX_PROBE_BUFFER 1024
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#define MAX_PROBES 128
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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 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 *dwfl;
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Dwarf_Addr bias;
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};
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extern struct debuginfo *debuginfo__new(const char *path);
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extern struct debuginfo *debuginfo__new_online_kernel(unsigned long addr);
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extern void debuginfo__delete(struct debuginfo *self);
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/* Find probe_trace_events specified by perf_probe_event from debuginfo */
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extern int debuginfo__find_trace_events(struct debuginfo *self,
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struct perf_probe_event *pev,
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struct probe_trace_event **tevs,
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int max_tevs);
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/* Find a perf_probe_point from debuginfo */
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extern int debuginfo__find_probe_point(struct debuginfo *self,
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unsigned long addr,
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struct perf_probe_point *ppt);
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/* Find a line range */
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extern int debuginfo__find_line_range(struct debuginfo *self,
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struct line_range *lr);
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/* Find available variables */
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extern int debuginfo__find_available_vars_at(struct debuginfo *self,
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struct perf_probe_event *pev,
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struct variable_list **vls,
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int max_points, bool externs);
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struct probe_finder {
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struct perf_probe_event *pev; /* Target probe event */
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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 list_head 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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Dwarf_CFI *cfi; /* Call Frame Information */
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#endif
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Dwarf_Op *fb_ops; /* Frame base attribute */
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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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};
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struct trace_event_finder {
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struct probe_finder pf;
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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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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 externs; /* Find external vars too */
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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 /* DWARF_SUPPORT */
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#endif /*_PROBE_FINDER_H */
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