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      1 #!/usr/bin/env python
      2 #
      3 # Copyright 2016 the V8 project authors. All rights reserved.
      4 # Redistribution and use in source and binary forms, with or without
      5 # modification, are permitted provided that the following conditions are
      6 # met:
      7 #
      8 #     * Redistributions of source code must retain the above copyright
      9 #       notice, this list of conditions and the following disclaimer.
     10 #     * Redistributions in binary form must reproduce the above
     11 #       copyright notice, this list of conditions and the following
     12 #       disclaimer in the documentation and/or other materials provided
     13 #       with the distribution.
     14 #     * Neither the name of Google Inc. nor the names of its
     15 #       contributors may be used to endorse or promote products derived
     16 #       from this software without specific prior written permission.
     17 #
     18 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29 
     30 import os.path
     31 import re
     32 import subprocess
     33 import sys
     34 
     35 
     36 def get_address_bounds():
     37   start = -1
     38   end = -1
     39   for arg in sys.argv:
     40     if arg.startswith("--start-address="):
     41       start = int(arg[-12:], 16)
     42     if arg.startswith("--stop-address="):
     43       end = int(arg[-12:], 16)
     44   return start, end
     45 
     46 
     47 def format_line(line):
     48   pieces = line.split(None, 3)
     49   return " " + pieces[0][2:] + ":\t" + pieces[3]
     50 
     51 
     52 def is_comment(line):
     53   stripped = line.strip()
     54   return stripped.startswith("--") or stripped.startswith(";;")
     55 
     56 def main():
     57   filename = sys.argv[-1]
     58   match = re.match(r"/tmp/perf-(.*)\.map", filename)
     59   if match:
     60     start, end = get_address_bounds()
     61     process_codefile = "code-" + match.group(1) + "-1.asm"
     62     if os.path.exists(process_codefile):
     63       codefile = open(process_codefile, "r")
     64     else:
     65       codefile = open("code.asm", "r")
     66     with codefile:
     67       printing = False
     68       for line in codefile:
     69         if line.startswith("0x"):
     70           addr = int(line.split()[0], 0)
     71           if start <= addr <= end:
     72             printing = True
     73             sys.stdout.write(format_line(line))
     74           elif printing:
     75             break
     76         elif printing and not is_comment(line):
     77           break
     78   else:
     79     sys.argv[0] = "objdump"
     80     sys.exit(subprocess.call(sys.argv))
     81 
     82 if __name__ == "__main__":
     83   main()
     84