Upgrade to V8 3.6

Merge V8 at 3.6.6.11

Simple merge required updates to makefiles only.

Bug: 5688872
Change-Id: Ib38b7ffbcd409585f6cb6fccc59c767029cecc77

8 files changed, 578 insertions, 18 deletions

diff --git a/tools/codemap.js b/tools/codemap.js
index dec494a3..129179e8 100644
--- a/tools/codemap.js
+++ b/tools/codemap.js
@@ -79,6 +79,7 @@ CodeMap.PAGE_SIZE =
  * @param {CodeMap.CodeEntry} codeEntry Code entry object.
  */
 CodeMap.prototype.addCode = function(start, codeEntry) {
+  this.deleteAllCoveredNodes_(this.dynamics_, start, start + codeEntry.size);
   this.dynamics_.insert(start, codeEntry);
 };
 
@@ -92,6 +93,7 @@ CodeMap.prototype.addCode = function(start, codeEntry) {
  */
 CodeMap.prototype.moveCode = function(from, to) {
   var removedNode = this.dynamics_.remove(from);
+  this.deleteAllCoveredNodes_(this.dynamics_, to, to + removedNode.value.size);
   this.dynamics_.insert(to, removedNode.value);
 };
 
@@ -146,6 +148,23 @@ CodeMap.prototype.markPages_ = function(start, end) {
 /**
  * @private
  */
+CodeMap.prototype.deleteAllCoveredNodes_ = function(tree, start, end) {
+  var to_delete = [];
+  var addr = end - 1;
+  while (addr >= start) {
+    var node = tree.findGreatestLessThan(addr);
+    if (!node) break;
+    var start2 = node.key, end2 = start2 + node.value.size;
+    if (start2 < end && start < end2) to_delete.push(start2);
+    addr = start2 - 1;
+  }
+  for (var i = 0, l = to_delete.length; i < l; ++i) tree.remove(to_delete[i]);
+};
+
+
+/**
+ * @private
+ */
 CodeMap.prototype.isAddressBelongsTo_ = function(addr, node) {
   return addr >= node.key && addr < (node.key + node.value.size);
 };
diff --git a/tools/gdb-v8-support.py b/tools/gdb-v8-support.py
index 0aa1d494..9cc046c7 100644
--- a/tools/gdb-v8-support.py
+++ b/tools/gdb-v8-support.py
@@ -138,7 +138,7 @@ def v8_to_int(v):
   else:
     return '?'
 
-  
+
 def v8_get_value(vstring):
   v = gdb.parse_and_eval(vstring)
   return v8_to_int(v)
diff --git a/tools/gyp/v8.gyp b/tools/gyp/v8.gyp
index 2da82139..50144172 100644
--- a/tools/gyp/v8.gyp
+++ b/tools/gyp/v8.gyp
@@ -71,6 +71,13 @@
                     ],
                   },
                 }],
+                ['soname_version!=""', {
+                  # Ideally, we'd like to specify the full filename for the
+                  # library and set it to "libv8.so.<(soname_version)",
+                  # but currently the best we can do is use 'product_name' and
+                  # get "libv8-<(soname_version).so".
+                  'product_name': 'v8-<(soname_version)',
+                }],
               ],
             },
             {
@@ -288,11 +295,11 @@
             '../../src/disasm.h',
             '../../src/disassembler.cc',
             '../../src/disassembler.h',
-            '../../src/dtoa.cc',
-            '../../src/dtoa.h',
             '../../src/diy-fp.cc',
             '../../src/diy-fp.h',
             '../../src/double.h',
+            '../../src/dtoa.cc',
+            '../../src/dtoa.h',
             '../../src/elements.cc',
             '../../src/elements.h',
             '../../src/execution.cc',
@@ -407,10 +414,10 @@
             '../../src/runtime-profiler.h',
             '../../src/safepoint-table.cc',
             '../../src/safepoint-table.h',
-            '../../src/scanner-base.cc',
-            '../../src/scanner-base.h',
             '../../src/scanner.cc',
             '../../src/scanner.h',
+            '../../src/scanner-character-streams.cc',
+            '../../src/scanner-character-streams.h',
             '../../src/scopeinfo.cc',
             '../../src/scopeinfo.h',
             '../../src/scopes.cc',
@@ -418,7 +425,7 @@
             '../../src/serialize.cc',
             '../../src/serialize.h',
             '../../src/small-pointer-list.h',
-            '../../src/smart-pointer.h',
+            '../../src/smart-array-pointer.h',
             '../../src/snapshot-common.cc',
             '../../src/snapshot.h',
             '../../src/spaces-inl.h',
@@ -643,6 +650,8 @@
             ['OS=="win"', {
               'sources': [
                 '../../src/platform-win32.cc',
+                '../../src/win32-math.cc',
+                '../../src/win32-math.h',
               ],
               'msvs_disabled_warnings': [4351, 4355, 4800],
               'link_settings':  {
@@ -787,19 +796,61 @@
             '../../src',
           ],
           'sources': [
+            '../../include/v8-preparser.h',
+            '../../include/v8stdint.h',
             '../../src/allocation.cc',
+            '../../src/allocation.h',
             '../../src/bignum.cc',
+            '../../src/bignum.h',
+            '../../src/bignum-dtoa.cc',
+            '../../src/bignum-dtoa.h',
             '../../src/cached-powers.cc',
+            '../../src/cached-powers.h',
+            '../../src/char-predicates-inl.h',
+            '../../src/char-predicates.h',
+            '../../src/checks.h',
+            '../../src/conversions-inl.h',
             '../../src/conversions.cc',
+            '../../src/conversions.h',
+            '../../src/diy-fp.cc',
+            '../../src/diy-fp.h',
+            '../../src/double.h',
+            '../../src/dtoa.cc',
+            '../../src/dtoa.h',
+            '../../src/fast-dtoa.cc',
+            '../../src/fast-dtoa.h',
+            '../../src/fixed-dtoa.cc',
+            '../../src/fixed-dtoa.h',
+            '../../src/globals.h',
             '../../src/hashmap.cc',
+            '../../src/hashmap.h',
+            '../../src/list-inl.h',
+            '../../src/list.h',
+            '../../src/preparse-data-format.h',
             '../../src/preparse-data.cc',
+            '../../src/preparse-data.h',
             '../../src/preparser.cc',
+            '../../src/preparser.h',
             '../../src/preparser-api.cc',
-            '../../src/scanner-base.cc',
+            '../../src/scanner.cc',
+            '../../src/scanner.h',
             '../../src/strtod.cc',
+            '../../src/strtod.h',
             '../../src/token.cc',
+            '../../src/token.h',
+            '../../src/unicode-inl.h',
             '../../src/unicode.cc',
+            '../../src/unicode.h',
+            '../../src/utils-inl.h',
             '../../src/utils.cc',
+            '../../src/utils.h',
+          ],
+          'conditions': [
+            ['OS=="win"', {
+              'sources': [
+                '../../src/win32-math.cc',
+                '../../src/win32-math.h',
+              ]}],
           ],
         },
       ],
diff --git a/tools/presubmit.py b/tools/presubmit.py
index c191fc74..fda7ba96 100755
--- a/tools/presubmit.py
+++ b/tools/presubmit.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 #
-# Copyright 2008 the V8 project authors. All rights reserved.
+# 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:
@@ -42,6 +42,7 @@ import pickle
 import re
 import sys
 import subprocess
+from subprocess import PIPE
 
 # Disabled LINT rules and reason.
 # build/include_what_you_use: Started giving false positives for variables
@@ -88,7 +89,6 @@ whitespace/blank_line
 whitespace/braces
 whitespace/comma
 whitespace/comments
-whitespace/end_of_line
 whitespace/ending_newline
 whitespace/indent
 whitespace/labels
@@ -231,11 +231,29 @@ COPYRIGHT_HEADER_PATTERN = re.compile(
 
 class SourceProcessor(SourceFileProcessor):
   """
-  Check that all files include a copyright notice.
+  Check that all files include a copyright notice and no trailing whitespaces.
   """
 
   RELEVANT_EXTENSIONS = ['.js', '.cc', '.h', '.py', '.c', 'SConscript',
-      'SConstruct', '.status']
+      'SConstruct', '.status', '.gyp', '.gypi']
+
+  # Overwriting the one in the parent class.
+  def FindFilesIn(self, path):
+    if os.path.exists(path+'/.git'):
+      output = subprocess.Popen('git ls-files --full-name',
+                                stdout=PIPE, cwd=path, shell=True)
+      result = []
+      for file in output.stdout.read().split():
+        for dir_part in os.path.dirname(file).split(os.sep):
+          if self.IgnoreDir(dir_part):
+            break
+        else:
+          if self.IsRelevant(file) and not self.IgnoreFile(file):
+            result.append(join(path, file))
+      if output.wait() == 0:
+        return result
+    return super(SourceProcessor, self).FindFilesIn(path)
+
   def IsRelevant(self, name):
     for ext in SourceProcessor.RELEVANT_EXTENSIONS:
       if name.endswith(ext):
@@ -273,17 +291,37 @@ class SourceProcessor(SourceFileProcessor):
       if not COPYRIGHT_HEADER_PATTERN.search(contents):
         print "%s is missing a correct copyright header." % name
         result = False
+    ext = base.split('.').pop()
+    if ' \n' in contents or contents.endswith(' '):
+      line = 0
+      lines = []
+      parts = contents.split(' \n')
+      if not contents.endswith(' '):
+        parts.pop()
+      for part in parts:
+        line += part.count('\n') + 1
+        lines.append(str(line))
+      linenumbers = ', '.join(lines)
+      if len(lines) > 1:
+        print "%s has trailing whitespaces in lines %s." % (name, linenumbers)
+      else:
+        print "%s has trailing whitespaces in line %s." % (name, linenumbers)
+      result = False
     return result
 
   def ProcessFiles(self, files, path):
     success = True
+    violations = 0
     for file in files:
       try:
         handle = open(file)
         contents = handle.read()
-        success = self.ProcessContents(file, contents) and success
+        if not self.ProcessContents(file, contents):
+          success = False
+          violations += 1
       finally:
         handle.close()
+    print "Total violating files: %s" % violations
     return success
 
 
@@ -299,8 +337,10 @@ def Main():
   parser = GetOptions()
   (options, args) = parser.parse_args()
   success = True
+  print "Running C++ lint check..."
   if not options.no_lint:
     success = CppLintProcessor().Run(workspace) and success
+  print "Running copyright header and trailing whitespaces check..."
   success = SourceProcessor().Run(workspace) and success
   if success:
     return 0
diff --git a/tools/process-heap-prof.py b/tools/process-heap-prof.py
index 6a2c3978..a26cbf15 100755
--- a/tools/process-heap-prof.py
+++ b/tools/process-heap-prof.py
@@ -47,7 +47,7 @@ def ProcessLogFile(filename, options):
     itemname = 'heap-js-cons-item'
   else:
     itemname = 'heap-sample-item'
-  
+
   first_call_time = None
   sample_time = 0.0
   sampling = False
@@ -108,11 +108,11 @@ def Main():
   if not ProcessOptions(options):
     parser.print_help()
     sys.exit();
-  
+
   if not args:
     print "Missing logfile"
     sys.exit();
-    
+
   ProcessLogFile(args[0], options)
 
 
diff --git a/tools/push-to-trunk.sh b/tools/push-to-trunk.sh
new file mode 100755
index 00000000..761b7336
--- /dev/null
+++ b/tools/push-to-trunk.sh
@@ -0,0 +1,431 @@
+#!/bin/bash
+# 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.
+
+
+########## Global variable definitions
+
+BRANCHNAME=prepare-push
+TRUNKBRANCH=trunk-push
+TEMP_BRANCH=v8-push-to-trunk-script-temporary-branch
+VERSION_FILE="src/version.cc"
+PERSISTFILE_BASENAME=/tmp/v8-push-to-trunk-tempfile
+CHANGELOG_ENTRY_FILE="$PERSISTFILE_BASENAME-changelog-entry"
+PATCH_FILE="$PERSISTFILE_BASENAME-patch"
+COMMITMSG_FILE="$PERSISTFILE_BASENAME-commitmsg"
+TOUCHED_FILES_FILE="$PERSISTFILE_BASENAME-touched-files"
+STEP=0
+
+
+########## Function definitions
+
+usage() {
+cat << EOF
+usage: $0 OPTIONS
+
+Performs the necessary steps for a V8 push to trunk. Only works for \
+git checkouts.
+
+OPTIONS:
+  -h    Show this message
+  -s    Specify the step where to start work. Default: 0.
+  -l    Manually specify the git commit ID of the last push to trunk.
+EOF
+}
+
+die() {
+  [[ -n "$1" ]] && echo "Error: $1"
+  echo "Exiting."
+  exit 1
+}
+
+confirm() {
+  echo -n "$1 [Y/n] "
+  read ANSWER
+  if [[ -z "$ANSWER" || "$ANSWER" == "Y" || "$ANSWER" == "y" ]] ; then
+    return 0
+  else
+    return 1
+  fi
+}
+
+delete_branch() {
+  local MATCH=$(git branch | grep $1 | awk '{print $NF}' )
+  if [ "$MATCH" == "$1" ] ; then
+    confirm "Branch $1 exists, do you want to delete it?"
+    if [ $? -eq 0 ] ; then
+      git branch -D $1 || die "Deleting branch '$1' failed."
+      echo "Branch $1 deleted."
+    else
+      die "Can't continue. Please delete branch $1 and try again."
+    fi
+  fi
+}
+
+# Persist and restore variables to support canceling/resuming execution
+# of this script.
+persist() {
+  local VARNAME=$1
+  local FILE="$PERSISTFILE_BASENAME-$VARNAME"
+  echo "${!VARNAME}" > $FILE
+}
+
+restore() {
+  local VARNAME=$1
+  local FILE="$PERSISTFILE_BASENAME-$VARNAME"
+  local VALUE="$(cat $FILE)"
+  eval "$VARNAME=\"$VALUE\""
+}
+
+restore_if_unset() {
+  local VARNAME=$1
+  [[ -z "${!VARNAME}" ]] && restore "$VARNAME"
+  [[ -z "${!VARNAME}" ]] && die "Variable '$VARNAME' could not be restored."
+}
+
+
+########## Option parsing
+
+while getopts ":hs:l:" OPTION ; do
+  case $OPTION in
+    h)  usage
+        exit 0
+        ;;
+    s)  STEP=$OPTARG
+        ;;
+    l)  LASTPUSH=$OPTARG
+        ;;
+    ?)  echo "Illegal option: -$OPTARG"
+        usage
+        exit 1
+        ;;
+  esac
+done
+
+
+########## Regular workflow
+
+# Cancel if this is not a git checkout.
+[[ -d .git ]] \
+  || die "This is not a git checkout, this script won't work for you."
+
+# Cancel if EDITOR is unset or not executable.
+[[ -n "$EDITOR" && -x "$(which $EDITOR)" ]] \
+  || die "Please set your EDITOR environment variable, you'll need it."
+
+if [ $STEP -le 0 ] ; then
+  echo ">>> Step 0: Preparation"
+  # Check for a clean workdir.
+  [[ -z "$(git status -s -uno)" ]] \
+    || die "Workspace is not clean. Please commit or undo your changes."
+
+  # Persist current branch.
+  CURRENT_BRANCH=$(git status -s -b -uno | grep "^##" | awk '{print $2}')
+  persist "CURRENT_BRANCH"
+  # Get ahold of a safe temporary branch and check it out.
+  if [ "$CURRENT_BRANCH" != "$TEMP_BRANCH" ] ; then
+    delete_branch $TEMP_BRANCH
+    git checkout -b $TEMP_BRANCH
+  fi
+  # Delete branches if they exist.
+  delete_branch $BRANCHNAME
+  delete_branch $TRUNKBRANCH
+fi
+
+if [ $STEP -le 1 ] ; then
+  echo ">>> Step 1: Fetch unfetched revisions."
+  git svn fetch || die "'git svn fetch' failed."
+fi
+
+if [ $STEP -le 2 ] ; then
+  echo ">>> Step 2: Create a fresh branch."
+  git checkout -b $BRANCHNAME svn/bleeding_edge \
+    || die "Creating branch $BRANCHNAME failed."
+fi
+
+if [ $STEP -le 3 ] ; then
+  echo ">>> Step 3: Detect commit ID of last push to trunk."
+  [[ -n "$LASTPUSH" ]] || LASTPUSH=$(git log -1 --format=%H ChangeLog)
+  LOOP=1
+  while [ $LOOP -eq 1 ] ; do
+    # Print assumed commit, circumventing git's pager.
+    git log -1 $LASTPUSH | cat
+    confirm "Is the commit printed above the last push to trunk?"
+    if [ $? -eq 0 ] ; then
+      LOOP=0
+    else
+      LASTPUSH=$(git log -1 --format=%H $LASTPUSH^ ChangeLog)
+    fi
+  done
+  persist "LASTPUSH"
+fi
+
+if [ $STEP -le 4 ] ; then
+  echo ">>> Step 4: Prepare raw ChangeLog entry."
+# These version numbers are used again later for the trunk commit.
+  MAJOR=$(grep "#define MAJOR_VERSION" "$VERSION_FILE" | awk '{print $NF}')
+  persist "MAJOR"
+  MINOR=$(grep "#define MINOR_VERSION" "$VERSION_FILE" | awk '{print $NF}')
+  persist "MINOR"
+  BUILD=$(grep "#define BUILD_NUMBER" "$VERSION_FILE" | awk '{print $NF}')
+  persist "BUILD"
+
+  DATE=$(date +%Y-%m-%d)
+  persist "DATE"
+  echo "$DATE: Version $MAJOR.$MINOR.$BUILD" > "$CHANGELOG_ENTRY_FILE"
+  echo "" >> "$CHANGELOG_ENTRY_FILE"
+  COMMITS=$(git log $LASTPUSH..HEAD --format=%H)
+  for commit in $COMMITS ; do
+    # Get the commit's title line.
+    git log -1 $commit --format="%w(80,8,8)%s" >> "$CHANGELOG_ENTRY_FILE"
+    # Grep for "BUG=xxxx" lines in the commit message.
+    git log -1 $commit --format="%b" | grep BUG= | grep -v "BUG=$" \
+                                     | sed -e 's/^/        /' \
+                                     >> "$CHANGELOG_ENTRY_FILE"
+    # Append the commit's author for reference.
+    git log -1 $commit --format="%w(80,8,8)(%an)" >> "$CHANGELOG_ENTRY_FILE"
+    echo "" >> "$CHANGELOG_ENTRY_FILE"
+  done
+fi
+
+if [ $STEP -le 5 ] ; then
+  echo ">>> Step 5: Edit ChangeLog entry."
+  echo -n "Please press <Return> to have your EDITOR open the ChangeLog entry, \
+then edit its contents to your liking. When you're done, save the file and \
+exit your EDITOR. "
+  read ANSWER
+  $EDITOR "$CHANGELOG_ENTRY_FILE"
+  NEWCHANGELOG=$(mktemp)
+  # Eliminate any trailing newlines by going through a shell variable.
+  CHANGELOGENTRY=$(cat "$CHANGELOG_ENTRY_FILE")
+  [[ -n "$CHANGELOGENTRY" ]] || die "Empty ChangeLog entry."
+  echo "$CHANGELOGENTRY" > "$NEWCHANGELOG"
+  echo "" >> "$NEWCHANGELOG" # Explicitly insert two empty lines.
+  echo "" >> "$NEWCHANGELOG"
+  cat ChangeLog >> "$NEWCHANGELOG"
+  mv "$NEWCHANGELOG" ChangeLog
+fi
+
+if [ $STEP -le 6 ] ; then
+  echo ">>> Step 6: Increment version number."
+  restore_if_unset "BUILD"
+  NEWBUILD=$(($BUILD + 1))
+  confirm "Automatically increment BUILD_NUMBER? (Saying 'n' will fire up \
+your EDITOR on $VERSION_FILE so you can make arbitrary changes. When \
+you're done, save the file and exit your EDITOR.)"
+  if [ $? -eq 0 ] ; then
+    sed -e "/#define BUILD_NUMBER/s/[0-9]*$/$NEWBUILD/" \
+        -i "$VERSION_FILE"
+  else
+    $EDITOR "$VERSION_FILE"
+  fi
+  NEWMAJOR=$(grep "#define MAJOR_VERSION" "$VERSION_FILE" | awk '{print $NF}')
+  persist "NEWMAJOR"
+  NEWMINOR=$(grep "#define MINOR_VERSION" "$VERSION_FILE" | awk '{print $NF}')
+  persist "NEWMINOR"
+  NEWBUILD=$(grep "#define BUILD_NUMBER" "$VERSION_FILE" | awk '{print $NF}')
+  persist "NEWBUILD"
+fi
+
+if [ $STEP -le 7 ] ; then
+  echo ">>> Step 7: Commit to local branch."
+  restore_if_unset "NEWMAJOR"
+  restore_if_unset "NEWMINOR"
+  restore_if_unset "NEWBUILD"
+  git commit -a -m "Prepare push to trunk.  \
+Now working on version $NEWMAJOR.$NEWMINOR.$NEWBUILD." \
+    || die "'git commit -a' failed."
+fi
+
+if [ $STEP -le 8 ] ; then
+  echo ">>> Step 8: Upload for code review."
+  echo -n "Please enter the email address of a V8 reviewer for your patch: "
+  read REVIEWER
+  git cl upload -r $REVIEWER --send-mail \
+    || die "'git cl upload' failed, please try again."
+fi
+
+if [ $STEP -le 9 ] ; then
+  echo ">>> Step 9: Commit to the repository."
+  echo "Please wait for an LGTM, then type \"LGTM<Return>\" to commit your \
+change. (If you need to iterate on the patch, do so in another shell.)"
+  unset ANSWER
+  while [ "$ANSWER" != "LGTM" ] ; do
+    [[ -n "$ANSWER" ]] && echo "That was not 'LGTM'."
+    echo -n "> "
+    read ANSWER
+  done
+  # Re-read the ChangeLog entry (to pick up possible changes).
+  cat ChangeLog | awk --posix '{
+    if ($0 ~ /^[0-9]{4}-[0-9]{2}-[0-9]{2}:/) {
+      if (in_firstblock == 1) {
+        exit 0;
+      } else {
+        in_firstblock = 1;
+      }
+    };
+    print $0;
+  }' > "$CHANGELOG_ENTRY_FILE"
+  git cl dcommit || die "'git cl dcommit' failed, please try again."
+fi
+
+if [ $STEP -le 10 ] ; then
+  echo ">>> Step 10: NOP"
+  # Present in the manual guide, not necessary (even harmful!) for this script.
+fi
+
+if [ $STEP -le 11 ] ; then
+  echo ">>> Step 11: Squash commits into one."
+  # Instead of relying on "git rebase -i", we'll just create a diff, because
+  # that's easier to automate.
+  git diff svn/trunk > "$PATCH_FILE"
+  # Convert the ChangeLog entry to commit message format:
+  # - remove date
+  # - remove indentation
+  # - merge paragraphs into single long lines, keeping empty lines between them.
+  restore_if_unset "DATE"
+  CHANGELOGENTRY=$(cat "$CHANGELOG_ENTRY_FILE")
+  echo "$CHANGELOGENTRY" \
+    | sed -e "s/^$DATE: //" \
+    | sed -e 's/^ *//' \
+    | awk '{
+        if (need_space == 1) {
+          printf(" ");
+        };
+        printf("%s", $0);
+        if ($0 ~ /^$/) {
+          printf("\n\n");
+          need_space = 0;
+        } else {
+          need_space = 1;
+        }
+      }' > "$COMMITMSG_FILE" || die "Commit message editing failed."
+  LOOP=1
+  while [ $LOOP -eq 1 ] ; do
+    echo "This is the trunk commit message:"
+    echo "--------------------"
+    cat "$COMMITMSG_FILE"
+    echo -e "\n--------------------"
+    confirm "Does this look good to you? (Saying 'n' will fire up your \
+EDITOR so you can change the commit message. When you're done, save the \
+file and exit your EDITOR.)"
+    if [ $? -eq 0 ] ; then
+      LOOP=0
+    else
+      $EDITOR "$COMMITMSG_FILE"
+    fi
+  done
+  rm -f "$CHANGELOG_ENTRY_FILE"
+fi
+
+if [ $STEP -le 12 ] ; then
+  echo ">>> Step 12: Create a new branch from trunk."
+  git checkout -b $TRUNKBRANCH svn/trunk \
+    || die "Checking out a new branch '$TRUNKBRANCH' failed."
+fi
+
+if [ $STEP -le 13 ] ; then
+  echo ">>> Step 13: Apply squashed changes."
+  patch -p1 < "$PATCH_FILE" | tee >(awk '{print $NF}' >> "$TOUCHED_FILES_FILE")
+  [[ $? -eq 0 ]] || die "Applying the patch to trunk failed."
+  # Stage added and modified files.
+  TOUCHED_FILES=$(cat "$TOUCHED_FILES_FILE")
+  for FILE in $TOUCHED_FILES ; do
+    git add "$FILE"
+  done
+  # Stage deleted files.
+  DELETED_FILES=$(git status -s -uno --porcelain | grep "^ D" \
+                                                 | awk '{print $NF}')
+  for FILE in $DELETED_FILES ; do
+    git rm "$FILE"
+  done
+  rm -f "$PATCH_FILE"
+  rm -f "$TOUCHED_FILES_FILE"
+fi
+
+if [ $STEP -le 14 ] ; then
+  echo ">>> Step 14: Set correct version for trunk."
+  restore_if_unset "MAJOR"
+  restore_if_unset "MINOR"
+  restore_if_unset "BUILD"
+  sed -e "/#define MAJOR_VERSION/s/[0-9]*$/$MAJOR/" \
+      -e "/#define MINOR_VERSION/s/[0-9]*$/$MINOR/" \
+      -e "/#define BUILD_NUMBER/s/[0-9]*$/$BUILD/" \
+      -e "/#define PATCH_LEVEL/s/[0-9]*$/0/" \
+      -e "/#define IS_CANDIDATE_VERSION/s/[0-9]*$/0/" \
+      -i "$VERSION_FILE" || die "Patching $VERSION_FILE failed."
+fi
+
+if [ $STEP -le 15 ] ; then
+  echo ">>> Step 15: Commit to local trunk branch."
+  git add "$VERSION_FILE"
+  git commit -F "$COMMITMSG_FILE" || die "'git commit' failed."
+  rm -f "$COMMITMSG_FILE"
+fi
+
+if [ $STEP -le 16 ] ; then
+  echo ">>> Step 16: Sanity check."
+  confirm "Please check if your local checkout is sane: Inspect $VERSION_FILE, \
+compile, run tests. Do you want to commit this new trunk revision to the \
+repository?"
+  [[ $? -eq 0 ]] || die "Execution canceled."
+fi
+
+if [ $STEP -le 17 ] ; then
+  echo ">>> Step 17. Commit to SVN."
+  git svn dcommit || die "'git svn dcommit' failed."
+fi
+
+if [ $STEP -le 18 ] ; then
+  echo ">>> Step 18: Tag the new revision."
+  restore_if_unset "MAJOR"
+  restore_if_unset "MINOR"
+  restore_if_unset "BUILD"
+  git svn tag $MAJOR.$MINOR.$BUILD -m "Tagging version $MAJOR.$MINOR.$BUILD" \
+    || die "'git svn tag' failed."
+fi
+
+if [ $STEP -le 19 ] ; then
+  echo ">>> Step 19: Cleanup."
+  restore_if_unset "CURRENT_BRANCH"
+  git checkout -f $CURRENT_BRANCH
+  [[ "$TEMP_BRANCH" != "$CURRENT_BRANCH" ]] && git branch -D $TEMP_BRANCH
+  [[ "$BRANCHNAME" != "$CURRENT_BRANCH" ]] && git branch -D $BRANCHNAME
+  [[ "$TRUNKBRANCH" != "$CURRENT_BRANCH" ]] && git branch -D $TRUNKBRANCH
+fi
+
+if [ $STEP -le 20 ] ; then
+  echo ">>> Step 20: Done!"
+  restore_if_unset "MAJOR"
+  restore_if_unset "MINOR"
+  restore_if_unset "BUILD"
+  echo "Congratulations, you have successfully created the trunk revision \
+$MAJOR.$MINOR.$BUILD. Please don't forget to update the v8rel spreadsheet, \
+and to roll this new version into Chromium."
+  # Clean up all temporary files.
+  rm -f "$PERSISTFILE_BASENAME"*
+fi
diff --git a/tools/test-wrapper-gypbuild.py b/tools/test-wrapper-gypbuild.py
index 9bc6bf6a..ad5449a4 100755
--- a/tools/test-wrapper-gypbuild.py
+++ b/tools/test-wrapper-gypbuild.py
@@ -53,6 +53,9 @@ def BuildOptions():
   result.add_option("--outdir",
                     help='Base output directory',
                     default='out')
+  result.add_option("--no-presubmit",
+                    help='Skip presubmit checks',
+                    default=False, action="store_true")
 
   # Flags this wrapper script handles itself:
   result.add_option("-m", "--mode",
@@ -202,22 +205,31 @@ def Main():
     return 1
 
   workspace = abspath(join(dirname(sys.argv[0]), '..'))
+
+  if not options.no_presubmit:
+    print ">>> running presubmit tests"
+    subprocess.call([workspace + '/tools/presubmit.py'])
+
   args_for_children = [workspace + '/tools/test.py'] + PassOnOptions(options)
   args_for_children += ['--no-build', '--build-system=gyp']
   for arg in args:
     args_for_children += [arg]
   returncodes = 0
+  env = os.environ
 
   for mode in options.mode:
     for arch in options.arch:
       print ">>> running tests for %s.%s" % (arch, mode)
-      shell = workspace + '/' + options.outdir + '/' + arch + '.' + mode + "/d8"
+      shellpath = workspace + '/' + options.outdir + '/' + arch + '.' + mode
+      env['LD_LIBRARY_PATH'] = shellpath + '/lib.target'
+      shell = shellpath + "/d8"
       child = subprocess.Popen(' '.join(args_for_children +
                                         ['--arch=' + arch] +
                                         ['--mode=' + mode] +
                                         ['--shell=' + shell]),
                                shell=True,
-                               cwd=workspace)
+                               cwd=workspace,
+                               env=env)
       returncodes += child.wait()
 
   return returncodes
diff --git a/tools/test.py b/tools/test.py
index d40159c6..ecc0062d 100755
--- a/tools/test.py
+++ b/tools/test.py
@@ -1164,6 +1164,7 @@ def ReadConfigurationInto(path, sections, defs):
 
 
 ARCH_GUESS = utils.GuessArchitecture()
+TIMEOUT_DEFAULT = 60;
 
 
 def BuildOptions():
@@ -1188,7 +1189,7 @@ def BuildOptions():
   result.add_option("-s", "--suite", help="A test suite",
       default=[], action="append")
   result.add_option("-t", "--timeout", help="Timeout in seconds",
-      default=60, type="int")
+      default=-1, type="int")
   result.add_option("--arch", help='The architecture to run tests for',
       default='none')
   result.add_option("--snapshot", help="Run the tests with snapshot turned on",
@@ -1262,6 +1263,12 @@ def ProcessOptions(options):
     if options.arch == 'none':
       options.arch = ARCH_GUESS
     options.scons_flags.append("arch=" + options.arch)
+  # Simulators are slow, therefore allow a longer default timeout.
+  if options.timeout == -1:
+    if options.arch == 'arm' or options.arch == 'mips':
+      options.timeout = 2 * TIMEOUT_DEFAULT;
+    else:
+      options.timeout = TIMEOUT_DEFAULT;
   if options.snapshot:
     options.scons_flags.append("snapshot=on")
   global VARIANT_FLAGS