linux-kernel - [PATCH v3 1/1] perf scripts python: arm-cs-trace-disasm.py: add option to print virtual address

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Date: Tue, 16 Jan 2024 10:08:52 +0800
From: Ruidong Tian <tianruidong@...ux.alibaba.com>
To: linux-kernel@...r.kernel.org
Cc: james.clark@....com,
	coresight@...ts.linaro.org,
	suzuki.poulose@....com,
	mike.leach@...aro.org,
	alexander.shishkin@...ux.intel.com,
	linux-arm-kernel@...ts.infradead.org,
	adrian.hunter@...el.com,
	linux-perf-users@...r.kernel.org,
	leo.yan@...aro.org,
	al.grant@....com,
	mathieu.poirier@...aro.org,
	tor@...com,
	acme@...hat.com,
	Ruidong Tian <tianruidong@...ux.alibaba.com>
Subject: [PATCH v3 1/1] perf scripts python: arm-cs-trace-disasm.py: add option to print virtual address

arm-cs-trace-disasm just print offset for library dso now:

    0000000000002200 <memcpy>:
        2200: d503201f      nop
        2204: 8b020024      add     x4, x1, x2
        2208: 8b020005      add     x5, x0, x2

Add a option `-a` to print virtual offset other than offset:

    # perf script -s scripts/python/arm-cs-trace-disasm.py -- -d llvm-objdump -a
    ...
    ffffb4c23200 <memcpy>:
        ffffb4c23200: d503201f      nop
        ffffb4c23204: 8b020024      add     x4, x1, x2
        ffffb4c23208: 8b020005      add     x5, x0, x2
    ...

Signed-off-by: Ruidong Tian <tianruidong@...ux.alibaba.com>
Reviewed-by: Leo Yan <leo.yan@...aro.org>
---
 tools/perf/scripts/python/arm-cs-trace-disasm.py | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/tools/perf/scripts/python/arm-cs-trace-disasm.py b/tools/perf/scripts/python/arm-cs-trace-disasm.py
index d973c2baed1c..78419498237e 100755
--- a/tools/perf/scripts/python/arm-cs-trace-disasm.py
+++ b/tools/perf/scripts/python/arm-cs-trace-disasm.py
@@ -36,7 +36,10 @@ option_list = [
 		    help="Set path to objdump executable file"),
 	make_option("-v", "--verbose", dest="verbose",
 		    action="store_true", default=False,
-		    help="Enable debugging log")
+		    help="Enable debugging log"),
+	make_option("-a", "--vaddr", dest="vaddr",
+			action="store_true", default=False,
+			help="Enable virtual address")
 ]
 
 parser = OptionParser(option_list=option_list)
@@ -108,6 +111,14 @@ def print_disam(dso_fname, dso_start, start_addr, stop_addr):
 			m = disasm_re.search(line)
 			if m is None:
 				continue
+
+		# Replace offset with virtual address
+		if (options.vaddr == True):
+			offset = re.search(r"^\s*([0-9a-fA-F]+)", line).group()
+			if offset:
+				virt_addr = dso_start + int(offset, 16)
+				line = line.replace(offset.lstrip(), "%x" % virt_addr)
+
 		print("\t" + line)
 
 def print_sample(sample):
-- 
2.33.1