| #!/usr/bin/env python |
| # |
| # Copyright 2011 the V8 project authors. All rights reserved. |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are |
| # met: |
| # |
| # * Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # * 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. |
| # * Neither the name of Google Inc. nor the names of its |
| # contributors may be used to endorse or promote products derived |
| # from this software without specific prior written permission. |
| # |
| # 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 os |
| import re |
| import subprocess |
| import tempfile |
| |
| |
| # Avoid using the slow (google-specific) wrapper around objdump. |
| OBJDUMP_BIN = "/usr/bin/objdump" |
| if not os.path.exists(OBJDUMP_BIN): |
| OBJDUMP_BIN = "objdump" |
| |
| |
| _COMMON_DISASM_OPTIONS = ["-M", "intel-mnemonic", "-C"] |
| |
| _DISASM_HEADER_RE = re.compile(r"[a-f0-9]+\s+<.*:$") |
| _DISASM_LINE_RE = re.compile(r"\s*([a-f0-9]+):\s*(\S.*)") |
| |
| # Keys must match constants in Logger::LogCodeInfo. |
| _ARCH_MAP = { |
| "ia32": "-m i386", |
| "x64": "-m i386 -M x86-64", |
| "arm": "-m arm", # Not supported by our objdump build. |
| "mips": "-m mips", # Not supported by our objdump build. |
| "arm64": "-m aarch64" |
| } |
| |
| |
| def GetDisasmLines(filename, offset, size, arch, inplace, arch_flags=""): |
| tmp_name = None |
| if not inplace: |
| # Create a temporary file containing a copy of the code. |
| assert arch in _ARCH_MAP, "Unsupported architecture '%s'" % arch |
| arch_flags = arch_flags + " " + _ARCH_MAP[arch] |
| tmp_name = tempfile.mktemp(".v8code") |
| command = "dd if=%s of=%s bs=1 count=%d skip=%d && " \ |
| "%s %s -D -b binary %s %s" % ( |
| filename, tmp_name, size, offset, |
| OBJDUMP_BIN, ' '.join(_COMMON_DISASM_OPTIONS), arch_flags, |
| tmp_name) |
| else: |
| command = "%s %s %s --start-address=%d --stop-address=%d -d %s " % ( |
| OBJDUMP_BIN, ' '.join(_COMMON_DISASM_OPTIONS), arch_flags, |
| offset, |
| offset + size, |
| filename) |
| process = subprocess.Popen(command, |
| shell=True, |
| stdout=subprocess.PIPE, |
| stderr=subprocess.STDOUT) |
| out, err = process.communicate() |
| lines = out.split("\n") |
| header_line = 0 |
| for i, line in enumerate(lines): |
| if _DISASM_HEADER_RE.match(line): |
| header_line = i |
| break |
| if tmp_name: |
| os.unlink(tmp_name) |
| split_lines = [] |
| for line in lines[header_line + 1:]: |
| match = _DISASM_LINE_RE.match(line) |
| if match: |
| line_address = int(match.group(1), 16) |
| split_lines.append((line_address, match.group(2))) |
| return split_lines |