grokdump: Simple windows minidump analysis on linux.

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

tools/disasm.py

+#!/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.
+}
+
+
+def GetDisasmLines(filename, offset, size, arch, inplace):
+  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_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 --start-address=%d --stop-address=%d -d %s " % (
+      OBJDUMP_BIN, ' '.join(_COMMON_DISASM_OPTIONS),
+      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

tools/ll_prof.py

@@ -30,13 +30,13 @@
 import bisect
 import collections
 import ctypes
+import disasm
 import mmap
 import optparse
 import os
 import re
 import subprocess
 import sys
-import tempfile
 import time
 
 
@@ -74,27 +74,12 @@ V8_GC_FAKE_MMAP = "/tmp/__v8_gc__"
 JS_ORIGIN = "js"
 JS_SNAPSHOT_ORIGIN = "js-snapshot"
 
-# Avoid using the slow (google-specific) wrapper around objdump.
-OBJDUMP_BIN = "/usr/bin/objdump"
-if not os.path.exists(OBJDUMP_BIN):
-  OBJDUMP_BIN = "objdump"
+OBJDUMP_BIN = disasm.OBJDUMP_BIN
 
 
 class Code(object):
   """Code object."""
 
-  _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]+):.*")
-
-  # 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.
-  }
-
   _id = 0
 
   def __init__(self, name, start_address, end_address, origin, origin_offset):
@@ -150,12 +135,7 @@ class Code(object):
     ticks_offsets = [t[0] for t in ticks_map]
     ticks_counts = [t[1] for t in ticks_map]
     # Get a list of disassembled lines and their addresses.
-    lines = []
-    for line in self._GetDisasmLines(code_info, options):
-      match = Code._DISASM_LINE_RE.match(line)
-      if match:
-        line_address = int(match.group(1), 16)
-        lines.append((line_address, line))
+    lines = self._GetDisasmLines(code_info, options)
     if len(lines) == 0:
       return
     # Print annotated lines.
@@ -179,9 +159,9 @@ class Code(object):
       total_count += count
       count = 100.0 * count / self.self_ticks
       if count >= 0.01:
-        print "%15.2f %s" % (count, lines[i][1])
+        print "%15.2f %x: %s" % (count, lines[i][0], lines[i][1])
       else:
-        print "%s %s" % (" " * 15, lines[i][1])
+        print "%s %x: %s" % (" " * 15, lines[i][0], lines[i][1])
     print
     assert total_count == self.self_ticks, \
         "Lost ticks (%d != %d) in %s" % (total_count, self.self_ticks, self)
@@ -195,39 +175,17 @@ class Code(object):
       self.origin)
 
   def _GetDisasmLines(self, code_info, options):
-    tmp_name = None
     if self.origin == JS_ORIGIN or self.origin == JS_SNAPSHOT_ORIGIN:
-      assert code_info.arch in Code._ARCH_MAP, \
-          "Unsupported architecture '%s'" % arch
-      arch_flags = Code._ARCH_MAP[code_info.arch]
-      # Create a temporary file just with this code object.
-      tmp_name = tempfile.mktemp(".v8code")
-      size = self.end_address - self.start_address
-      command = "dd if=%s.code of=%s bs=1 count=%d skip=%d && " \
-                "%s %s -D -b binary %s %s" % (
-        options.log, tmp_name, size, self.origin_offset,
-        OBJDUMP_BIN, ' '.join(Code._COMMON_DISASM_OPTIONS), arch_flags,
-        tmp_name)
+      inplace = False
+      filename = options.log + ".code"
     else:
-      command = "%s %s --start-address=%d --stop-address=%d -d %s " % (
-        OBJDUMP_BIN, ' '.join(Code._COMMON_DISASM_OPTIONS),
+      inplace = True
+      filename = self.origin
+    return disasm.GetDisasmLines(filename,
                                  self.origin_offset,
-        self.origin_offset + self.end_address - self.start_address,
-        self.origin)
-    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 Code._DISASM_HEADER_RE.match(line):
-        header_line = i
-        break
-    if tmp_name:
-      os.unlink(tmp_name)
-    return lines[header_line + 1:]
+                                 self.end_address - self.start_address,
+                                 code_info.arch,
+                                 inplace)
 
 
 class CodePage(object):