zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/tools/perf/util/probe-finder.h b/ap/os/linux/linux-3.4.x/tools/perf/util/probe-finder.h
new file mode 100644
index 0000000..17e94d0
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/tools/perf/util/probe-finder.h
@@ -0,0 +1,107 @@
+#ifndef _PROBE_FINDER_H
+#define _PROBE_FINDER_H
+
+#include <stdbool.h>
+#include "util.h"
+#include "probe-event.h"
+
+#define MAX_PROBE_BUFFER 1024
+#define MAX_PROBES 128
+
+static inline int is_c_varname(const char *name)
+{
+ /* TODO */
+ return isalpha(name[0]) || name[0] == '_';
+}
+
+#ifdef DWARF_SUPPORT
+
+#include "dwarf-aux.h"
+
+/* TODO: export debuginfo data structure even if no dwarf support */
+
+/* debug information structure */
+struct debuginfo {
+ Dwarf *dbg;
+ Dwfl *dwfl;
+ Dwarf_Addr bias;
+};
+
+extern struct debuginfo *debuginfo__new(const char *path);
+extern struct debuginfo *debuginfo__new_online_kernel(unsigned long addr);
+extern void debuginfo__delete(struct debuginfo *self);
+
+/* Find probe_trace_events specified by perf_probe_event from debuginfo */
+extern int debuginfo__find_trace_events(struct debuginfo *self,
+ struct perf_probe_event *pev,
+ struct probe_trace_event **tevs,
+ int max_tevs);
+
+/* Find a perf_probe_point from debuginfo */
+extern int debuginfo__find_probe_point(struct debuginfo *self,
+ unsigned long addr,
+ struct perf_probe_point *ppt);
+
+/* Find a line range */
+extern int debuginfo__find_line_range(struct debuginfo *self,
+ struct line_range *lr);
+
+/* Find available variables */
+extern int debuginfo__find_available_vars_at(struct debuginfo *self,
+ struct perf_probe_event *pev,
+ struct variable_list **vls,
+ int max_points, bool externs);
+
+struct probe_finder {
+ 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 */
+ 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 list_head lcache; /* Line cache for lazy match */
+
+ /* For variable searching */
+#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;
+ 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;
+ 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 */
+};
+
+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 /* DWARF_SUPPORT */
+
+#endif /*_PROBE_FINDER_H */