[PATCH V7 1/7] perf tools: Add map_groups__find_ams()

[Adrian Hunter <adrian.hunter@intel.com>]

From: Arnaldo Carvalho de Melo <acme@redhat.com>

Add a function to find a symbol using an ip that
might be on a different map.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
 tools/perf/util/map.c | 17 +++++++++++++++++
 tools/perf/util/map.h |  4 ++++
 2 files changed, 21 insertions(+)

diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 17ee458..9dea404 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -371,6 +371,23 @@ struct symbol *map_groups__find_symbol_by_name(struct map_groups *mg,
 	return NULL;
 }
 
+int map_groups__find_ams(struct addr_map_symbol *ams, symbol_filter_t filter)
+{
+	if (ams->addr < ams->map->start || ams->addr > ams->map->end) {
+		if (ams->map->groups == NULL)
+			return -1;
+		ams->map = map_groups__find(ams->map->groups, ams->map->type,
+					    ams->addr);
+		if (ams->map == NULL)
+			return -1;
+	}
+
+	ams->al_addr = ams->map->map_ip(ams->map, ams->addr);
+	ams->sym = map__find_symbol(ams->map, ams->al_addr, filter);
+
+	return ams->sym ? 0 : -1;
+}
+
 size_t __map_groups__fprintf_maps(struct map_groups *mg,
 				  enum map_type type, int verbose, FILE *fp)
 {
diff --git a/tools/perf/util/map.h b/tools/perf/util/map.h
index 4886ca2..0359b4a 100644
--- a/tools/perf/util/map.h
+++ b/tools/perf/util/map.h
@@ -167,6 +167,10 @@ struct symbol *map_groups__find_symbol_by_name(struct map_groups *mg,
 					       struct map **mapp,
 					       symbol_filter_t filter);
 
+struct addr_map_symbol;
+
+int map_groups__find_ams(struct addr_map_symbol *ams, symbol_filter_t filter);
+
 static inline
 struct symbol *map_groups__find_function_by_name(struct map_groups *mg,
 						 const char *name, struct map **mapp,
-- 
1.7.11.7