linux-kernel - [tip:perf/urgent] perf annotate: Support jump instruction with target as second operand

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Message-ID: <tip-3ee2eb6da20db1edad31070da38996e8e0f8adfa@git.kernel.org>
Date:   Tue, 20 Dec 2016 11:25:39 -0800
From:   tip-bot for Ravi Bangoria <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     ravi.bangoria@...ux.vnet.ibm.com, hpa@...or.com,
        kim.phillips@....com, mhiramat@...nel.org, chris.ryder@....com,
        tglx@...utronix.de, naveen.n.rao@...ux.vnet.ibm.com,
        alexander.shishkin@...ux.intel.com, linux-kernel@...r.kernel.org,
        peterz@...radead.org, markus@...ppelsdorf.de, mingo@...nel.org,
        acme@...hat.com, treeze.taeung@...il.com
Subject: [tip:perf/urgent] perf annotate: Support jump instruction with
 target as second operand

Commit-ID:  3ee2eb6da20db1edad31070da38996e8e0f8adfa
Gitweb:     http://git.kernel.org/tip/3ee2eb6da20db1edad31070da38996e8e0f8adfa
Author:     Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com>
AuthorDate: Mon, 5 Dec 2016 21:26:46 +0530
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Thu, 15 Dec 2016 16:25:46 -0300

perf annotate: Support jump instruction with target as second operand

Architectures like PowerPC have jump instructions that includes a target
address as a second operand. For example, 'bne cr7,0xc0000000000f6154'.
Add support for such instruction in perf annotate.

objdump o/p:
  c0000000000f6140:   ld     r9,1032(r31)
  c0000000000f6144:   cmpdi  cr7,r9,0
  c0000000000f6148:   bne    cr7,0xc0000000000f6154
  c0000000000f614c:   ld     r9,2312(r30)
  c0000000000f6150:   std    r9,1032(r31)
  c0000000000f6154:   ld     r9,88(r31)

Corresponding perf annotate o/p:

Before patch:
         ld     r9,1032(r31)
         cmpdi  cr7,r9,0
      v  bne    3ffffffffff09f2c
         ld     r9,2312(r30)
         std    r9,1032(r31)
  74:    ld     r9,88(r31)

After patch:
         ld     r9,1032(r31)
         cmpdi  cr7,r9,0
      v  bne    74
         ld     r9,2312(r30)
         std    r9,1032(r31)
  74:    ld     r9,88(r31)

Signed-off-by: Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Chris Riyder <chris.ryder@....com>
Cc: Kim Phillips <kim.phillips@....com>
Cc: Markus Trippelsdorf <markus@...ppelsdorf.de>
Cc: Masami Hiramatsu <mhiramat@...nel.org>
Cc: Naveen N. Rao <naveen.n.rao@...ux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Taeung Song <treeze.taeung@...il.com>
Cc: linuxppc-dev@...ts.ozlabs.org
Link: http://lkml.kernel.org/r/1480953407-7605-2-git-send-email-ravi.bangoria@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/annotate.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index ea7e0de..590244e 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -223,8 +223,12 @@ bool ins__is_call(const struct ins *ins)
 static int jump__parse(struct arch *arch __maybe_unused, struct ins_operands *ops, struct map *map __maybe_unused)
 {
 	const char *s = strchr(ops->raw, '+');
+	const char *c = strchr(ops->raw, ',');
 
-	ops->target.addr = strtoull(ops->raw, NULL, 16);
+	if (c++ != NULL)
+		ops->target.addr = strtoull(c, NULL, 16);
+	else
+		ops->target.addr = strtoull(ops->raw, NULL, 16);
 
 	if (s++ != NULL)
 		ops->target.offset = strtoull(s, NULL, 16);