dc789377a1
Makes disassembly jump target printing look more like the output of objdump, for compatibility with perf's jump arrows. This includes swapping the order of address and offset, and making the offset and line numbers hex. As a drive-by, print comment lines in objdump-v8 so that they can be shown/hidden as "source" lines by perf. Review-Url: https://codereview.chromium.org/2757263002 Cr-Commit-Position: refs/heads/master@{#43940}
87 lines
2.9 KiB
Python
Executable File
87 lines
2.9 KiB
Python
Executable File
#!/usr/bin/env python
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#
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# Copyright 2016 the V8 project authors. All rights reserved.
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials provided
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# with the distribution.
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# * Neither the name of Google Inc. nor the names of its
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# contributors may be used to endorse or promote products derived
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# from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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import os.path
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import re
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import subprocess
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import sys
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def get_address_bounds():
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start = -1
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end = -1
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for arg in sys.argv:
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if arg.startswith("--start-address="):
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start = int(arg[-12:], 16)
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if arg.startswith("--stop-address="):
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end = int(arg[-12:], 16)
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return start, end
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def format_line(line):
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pieces = line.split(None, 3)
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return " " + pieces[0][2:] + ":\t" + pieces[3]
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def is_comment(line):
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stripped = line.strip()
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return stripped.startswith("--") or stripped.startswith(";;")
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def main():
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filename = sys.argv[-1]
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match = re.match(r"/tmp/perf-(.*)\.map", filename)
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if match:
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start, end = get_address_bounds()
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process_codefile = "code-" + match.group(1) + "-1.asm"
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if os.path.exists(process_codefile):
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codefile = open(process_codefile, "r")
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else:
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codefile = open("code.asm", "r")
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with codefile:
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printing = False
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for line in codefile:
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if line.startswith("0x"):
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addr = int(line.split()[0], 0)
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if start <= addr <= end:
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printing = True
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sys.stdout.write(format_line(line))
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elif printing:
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break
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elif printing:
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if not is_comment(line):
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break
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else:
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sys.stdout.write(line)
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else:
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sys.argv[0] = "objdump"
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sys.exit(subprocess.call(sys.argv))
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if __name__ == "__main__":
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main()
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