text: # Copyright (c) 2017, Tomohiro Kusumi
  # All rights reserved.
  #
  # Redistribution and use in source and binary forms, with or without
  # modification, are permitted provided that the following conditions are met:
  #
  # 1. Redistributions of source code must retain the above copyright notice, this
  #    list of conditions and the following disclaimer.
  # 2. Redistributions in binary form must reproduce the above copyright notice,
  #    this list of conditions and the following disclaimer in the documentation
  #    and/or other materials provided with the distribution.
  #
  # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  # DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
  # ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  import re
  
  from . import log
  from . import nodep
  from . import unix # not kernel to prevent circular import
  
  def __execute_objdump(*args):
      assert not nodep.is_windows(), "Windows unsupported"
      cmd = ["objdump"]
      cmd.extend(*args)
      return unix.execute(*cmd)
  
  def get_elf_section_info(f, section):
      args = "-h", "-j", section, f
      ret = __execute_objdump(args)
      if ret.retval:
          log.error("Failed to execute objdump {0}".format(args))
          return
  
      pattern = r"^\s+[0-9]+\s+{0}\s+(\S+)\s+(\S+)".format(section)
      start = False
  
      for l in ret.stdout.split("\n"):
          if l.startswith("Idx Name"):
              start = True
              continue
          if not start:
              continue
          m = re.match(pattern, l)
          if m:
              length = int(m.group(1), 16)
              offset = int(m.group(2), 16)
              return offset, length
  