linux-kernel - [PATCH 1/8] perf annotate: Use raw form for register indirect call instructions

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Date:	Sat, 12 May 2012 16:53:00 -0300
From:	Arnaldo Carvalho de Melo <acme@...radead.org>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	linux-kernel@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Mike Galbraith <efault@....de>,
	Namhyung Kim <namhyung@...il.com>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Stephane Eranian <eranian@...gle.com>
Subject: [PATCH 1/8] perf annotate: Use raw form for register indirect call instructions

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

   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 <torvalds@...ux-foundation.org>
Cc: David Ahern <dsahern@...il.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Mike Galbraith <efault@....de>
Cc: Namhyung Kim <namhyung@...il.com>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Stephane Eranian <eranian@...gle.com>
Link: http://lkml.kernel.org/n/tip-m91tv004h2m1fkfgu6ovx3hb@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/annotate.c |    9 +++++++++
 1 file changed, 9 insertions(+)

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);
 }
 
-- 
1.7.9.2.358.g22243

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