diff options
Diffstat (limited to 'tools/perf/util/probe-finder.h')
| -rw-r--r-- | tools/perf/util/probe-finder.h | 119 |
1 files changed, 83 insertions, 36 deletions
diff --git a/tools/perf/util/probe-finder.h b/tools/perf/util/probe-finder.h index a4086aaddb7..92590b2c7e1 100644 --- a/tools/perf/util/probe-finder.h +++ b/tools/perf/util/probe-finder.h @@ -1,9 +1,14 @@ #ifndef _PROBE_FINDER_H #define _PROBE_FINDER_H -#define MAX_PATH_LEN 256 +#include <stdbool.h> +#include "util.h" +#include "intlist.h" +#include "probe-event.h" + #define MAX_PROBE_BUFFER 1024 #define MAX_PROBES 128 +#define MAX_PROBE_ARGS 128 static inline int is_c_varname(const char *name) { @@ -11,55 +16,97 @@ static inline int is_c_varname(const char *name) return isalpha(name[0]) || name[0] == '_'; } -struct probe_point { - char *event; /* Event name */ - char *group; /* Event group */ +#ifdef HAVE_DWARF_SUPPORT - /* Inputs */ - char *file; /* File name */ - int line; /* Line number */ +#include "dwarf-aux.h" - char *function; /* Function name */ - int offset; /* Offset bytes */ +/* TODO: export debuginfo data structure even if no dwarf support */ - int nr_args; /* Number of arguments */ - char **args; /* Arguments */ +/* debug information structure */ +struct debuginfo { + Dwarf *dbg; + Dwfl_Module *mod; + Dwfl *dwfl; + Dwarf_Addr bias; +}; - int retprobe; /* Return probe */ +/* This also tries to open distro debuginfo */ +extern struct debuginfo *debuginfo__new(const char *path); +extern void debuginfo__delete(struct debuginfo *dbg); - /* Output */ - int found; /* Number of found probe points */ - char *probes[MAX_PROBES]; /* Output buffers (will be allocated)*/ -}; +/* Find probe_trace_events specified by perf_probe_event from debuginfo */ +extern int debuginfo__find_trace_events(struct debuginfo *dbg, + struct perf_probe_event *pev, + struct probe_trace_event **tevs, + int max_tevs); -#ifndef NO_LIBDWARF -extern int find_probepoint(int fd, struct probe_point *pp); +/* Find a perf_probe_point from debuginfo */ +extern int debuginfo__find_probe_point(struct debuginfo *dbg, + unsigned long addr, + struct perf_probe_point *ppt); -/* Workaround for undefined _MIPS_SZLONG bug in libdwarf.h: */ -#ifndef _MIPS_SZLONG -# define _MIPS_SZLONG 0 -#endif +/* Find a line range */ +extern int debuginfo__find_line_range(struct debuginfo *dbg, + struct line_range *lr); -#include <dwarf.h> -#include <libdwarf.h> +/* Find available variables */ +extern int debuginfo__find_available_vars_at(struct debuginfo *dbg, + struct perf_probe_event *pev, + struct variable_list **vls, + int max_points, bool externs); struct probe_finder { - struct probe_point *pp; /* Target probe point */ + struct perf_probe_event *pev; /* Target probe event */ + + /* Callback when a probe point is found */ + int (*callback)(Dwarf_Die *sc_die, struct probe_finder *pf); /* For function searching */ - Dwarf_Addr addr; /* Address */ - Dwarf_Unsigned fno; /* File number */ - Dwarf_Unsigned lno; /* Line number */ - Dwarf_Off inl_offs; /* Inline offset */ - Dwarf_Die cu_die; /* Current CU */ + int lno; /* Line number */ + Dwarf_Addr addr; /* Address */ + const char *fname; /* Real file name */ + Dwarf_Die cu_die; /* Current CU */ + Dwarf_Die sp_die; + struct intlist *lcache; /* Line cache for lazy match */ /* For variable searching */ - Dwarf_Addr cu_base; /* Current CU base address */ - Dwarf_Locdesc fbloc; /* Location of Current Frame Base */ - const char *var; /* Current variable name */ - char *buf; /* Current output buffer */ - int len; /* Length of output buffer */ +#if _ELFUTILS_PREREQ(0, 142) + Dwarf_CFI *cfi; /* Call Frame Information */ +#endif + Dwarf_Op *fb_ops; /* Frame base attribute */ + struct perf_probe_arg *pvar; /* Current target variable */ + struct probe_trace_arg *tvar; /* Current result variable */ +}; + +struct trace_event_finder { + struct probe_finder pf; + Dwfl_Module *mod; /* For solving symbols */ + struct probe_trace_event *tevs; /* Found trace events */ + int ntevs; /* Number of trace events */ + int max_tevs; /* Max number of trace events */ +}; + +struct available_var_finder { + struct probe_finder pf; + Dwfl_Module *mod; /* For solving symbols */ + struct variable_list *vls; /* Found variable lists */ + int nvls; /* Number of variable lists */ + int max_vls; /* Max no. of variable lists */ + bool externs; /* Find external vars too */ + bool child; /* Search child scopes */ }; -#endif /* NO_LIBDWARF */ + +struct line_finder { + struct line_range *lr; /* Target line range */ + + const char *fname; /* File name */ + int lno_s; /* Start line number */ + int lno_e; /* End line number */ + Dwarf_Die cu_die; /* Current CU */ + Dwarf_Die sp_die; + int found; +}; + +#endif /* HAVE_DWARF_SUPPORT */ #endif /*_PROBE_FINDER_H */ |