2012-05-14 12:58:36

by Arnaldo Carvalho de Melo

[permalink] [raw]
Subject: [tip:perf/core] perf annotate: Use raw form for register indirect call instructions

Commit-ID: e8ea1561952b04276cf4c02500e363de76c142aa
Gitweb: http://git.kernel.org/tip/e8ea1561952b04276cf4c02500e363de76c142aa
Author: Arnaldo Carvalho de Melo <[email protected]>
AuthorDate: Fri, 11 May 2012 12:28:55 -0300
Committer: Arnaldo Carvalho de Melo <[email protected]>
CommitDate: Fri, 11 May 2012 12:28:55 -0300

perf annotate: Use raw form for register indirect call instructions

callq *0x10(%rax)

was being rendered in simplified mode as:

callq *10

I.e. hexa, but without the 0x and omitting the register. In such cases
just use the raw form.

Reported-by: Linus Torvalds <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Mike Galbraith <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link: http://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
---
tools/perf/util/annotate.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 6b4146b..9a020d1 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -56,6 +56,12 @@ static int call__parse(struct ins_operands *ops)
return ops->target.name == NULL ? -1 : 0;

indirect_call:
+ tok = strchr(endptr, '(');
+ if (tok != NULL) {
+ ops->target.addr = 0;
+ return 0;
+ }
+
tok = strchr(endptr, '*');
if (tok == NULL)
return -1;
@@ -70,6 +76,9 @@ static int call__scnprintf(struct ins *ins, char *bf, size_t size,
if (ops->target.name)
return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->target.name);

+ if (ops->target.addr == 0)
+ return ins__raw_scnprintf(ins, bf, size, ops);
+
return scnprintf(bf, size, "%-6.6s *%" PRIx64, ins->name, ops->target.addr);
}