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authorAdrian Hunter2013-10-14 13:43:44 +0300
committerArnaldo Carvalho de Melo2013-10-14 12:21:18 -0300
commit1d5077bdd9a10c4297cded139989bb9ee2998a6c (patch)
tree2d072c0a31e42cdeba837f85058f39b5b034f06c /tools/perf/util/map.c
parentfc1b691d7651d9496e912de7e0fc73a5be3294af (diff)
perf annotate: Another fix for annotate_browser__callq()
The target address is provided by objdump and is not necessary a memory address. Add a helper to get the correct address. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1381747424-3557-8-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/map.c')
-rw-r--r--tools/perf/util/map.c31
1 files changed, 30 insertions, 1 deletions
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 9dea404de3fa..ef5bc913ca7a 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -252,10 +252,16 @@ size_t map__fprintf_dsoname(struct map *map, FILE *fp)
return fprintf(fp, "%s", dsoname);
}
-/*
+/**
+ * map__rip_2objdump - convert symbol start address to objdump address.
+ * @map: memory map
+ * @rip: symbol start address
+ *
* objdump wants/reports absolute IPs for ET_EXEC, and RIPs for ET_DYN.
* map->dso->adjust_symbols==1 for ET_EXEC-like cases except ET_REL which is
* relative to section start.
+ *
+ * Return: Address suitable for passing to "objdump --start-address="
*/
u64 map__rip_2objdump(struct map *map, u64 rip)
{
@@ -268,6 +274,29 @@ u64 map__rip_2objdump(struct map *map, u64 rip)
return map->unmap_ip(map, rip);
}
+/**
+ * map__objdump_2mem - convert objdump address to a memory address.
+ * @map: memory map
+ * @ip: objdump address
+ *
+ * Closely related to map__rip_2objdump(), this function takes an address from
+ * objdump and converts it to a memory address. Note this assumes that @map
+ * contains the address. To be sure the result is valid, check it forwards
+ * e.g. map__rip_2objdump(map->map_ip(map, map__objdump_2mem(map, ip))) == ip
+ *
+ * Return: Memory address.
+ */
+u64 map__objdump_2mem(struct map *map, u64 ip)
+{
+ if (!map->dso->adjust_symbols)
+ return map->unmap_ip(map, ip);
+
+ if (map->dso->rel)
+ return map->unmap_ip(map, ip + map->pgoff);
+
+ return ip;
+}
+
void map_groups__init(struct map_groups *mg)
{
int i;