linux-kernel - [PATCH 2/3] perf scripts python: arm-cs-trace-disasm.py: set start vm addr of exectable file to 0

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Message-Id: <20231214123304.34087-3-tianruidong@linux.alibaba.com>
Date:   Thu, 14 Dec 2023 20:33:03 +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 2/3] perf scripts python: arm-cs-trace-disasm.py: set start vm addr of exectable file to 0

For exectable ELF file, which e_type is ET_EXEC, dso start address is a
absolute address other than offset. Just set vm_start to zero when dso
start is 0x400000, which means it is a exectable file.

Signed-off-by: Ruidong Tian <tianruidong@...ux.alibaba.com>
---
 tools/perf/scripts/python/arm-cs-trace-disasm.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/tools/perf/scripts/python/arm-cs-trace-disasm.py b/tools/perf/scripts/python/arm-cs-trace-disasm.py
index 46bf6b02eea1..c9e14af5b58c 100755
--- a/tools/perf/scripts/python/arm-cs-trace-disasm.py
+++ b/tools/perf/scripts/python/arm-cs-trace-disasm.py
@@ -260,8 +260,9 @@ def process_event(param_dict):
 
 	if (options.objdump_name != None):
 		# It doesn't need to decrease virtual memory offset for disassembly
-		# for kernel dso, so in this case we set vm_start to zero.
-		if (dso == "[kernel.kallsyms]"):
+		# for kernel dso and executable file dso, so in this case we set
+		# vm_start to zero.
+		if (dso == "[kernel.kallsyms]" or dso_start == 0x400000):
 			dso_vm_start = 0
 		else:
 			dso_vm_start = int(dso_start)
-- 
2.33.1