25f2f21f50
Analyses full minidump (.dmp) files. Shows the processor state at the point of exception including the stack of the active thread and the referenced objects in the V8 heap. Code objects are disassembled and the addresses linked from the stack (pushed return addresses) are marked with "=>". Review URL: http://codereview.chromium.org/6312058 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6896 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
93 lines
3.4 KiB
Python
93 lines
3.4 KiB
Python
#!/usr/bin/env python
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#
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# Copyright 2011 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
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import re
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import subprocess
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import tempfile
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# Avoid using the slow (google-specific) wrapper around objdump.
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OBJDUMP_BIN = "/usr/bin/objdump"
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if not os.path.exists(OBJDUMP_BIN):
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OBJDUMP_BIN = "objdump"
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_COMMON_DISASM_OPTIONS = ["-M", "intel-mnemonic", "-C"]
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_DISASM_HEADER_RE = re.compile(r"[a-f0-9]+\s+<.*:$")
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_DISASM_LINE_RE = re.compile(r"\s*([a-f0-9]+):\s*(\S.*)")
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# Keys must match constants in Logger::LogCodeInfo.
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_ARCH_MAP = {
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"ia32": "-m i386",
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"x64": "-m i386 -M x86-64",
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"arm": "-m arm" # Not supported by our objdump build.
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}
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def GetDisasmLines(filename, offset, size, arch, inplace):
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tmp_name = None
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if not inplace:
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# Create a temporary file containing a copy of the code.
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assert arch in _ARCH_MAP, "Unsupported architecture '%s'" % arch
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arch_flags = _ARCH_MAP[arch]
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tmp_name = tempfile.mktemp(".v8code")
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command = "dd if=%s of=%s bs=1 count=%d skip=%d && " \
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"%s %s -D -b binary %s %s" % (
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filename, tmp_name, size, offset,
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OBJDUMP_BIN, ' '.join(_COMMON_DISASM_OPTIONS), arch_flags,
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tmp_name)
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else:
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command = "%s %s --start-address=%d --stop-address=%d -d %s " % (
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OBJDUMP_BIN, ' '.join(_COMMON_DISASM_OPTIONS),
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offset,
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offset + size,
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filename)
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process = subprocess.Popen(command,
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shell=True,
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stdout=subprocess.PIPE,
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stderr=subprocess.STDOUT)
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out, err = process.communicate()
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lines = out.split("\n")
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header_line = 0
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for i, line in enumerate(lines):
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if _DISASM_HEADER_RE.match(line):
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header_line = i
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break
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if tmp_name:
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os.unlink(tmp_name)
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split_lines = []
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for line in lines[header_line + 1:]:
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match = _DISASM_LINE_RE.match(line)
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if match:
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line_address = int(match.group(1), 16)
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split_lines.append((line_address, match.group(2)))
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return split_lines
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