1 files changed, 129 insertions, 0 deletions
diff --git a/js/src/zydis/update.sh b/js/src/zydis/update.sh
new file mode 100755
index 0000000000..f99552373d
--- /dev/null
+++ b/js/src/zydis/update.sh
@@ -0,0 +1,129 @@
+#!/usr/bin/env bash
+
+# Copyright 2019 Mozilla Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+#
+# Usage: update.sh [-v version]
+#
+# The version is the github rev we want; the default is HEAD
+#
+# Script to pull a new version of zydis, assuming it looks like an
+# older version of zydis.  (This is by no means assured.)
+
+if [ ! -d zydis -o ! -f zydis/moz.build ]; then
+    echo "Run this script from the mozilla-central/js/src directory"
+    exit 1
+fi
+
+REV="HEAD"
+if [ "$1" = "-v" ]; then
+    REV=$2
+fi
+
+ZYDISTMP=$(pwd)/zydis_tmp
+ZYDISNEW=$(pwd)/zydis_new
+ZYDISOLD=$(pwd)/zydis_old
+rm -rf $ZYDISTMP $ZYDISNEW $ZYDISOLD
+
+# Get zydis
+
+echo "CLONING..."
+mkdir $ZYDISTMP
+(
+cd $ZYDISTMP
+git clone --recursive https://github.com/zyantific/zydis.git
+cd zydis
+git checkout $REV
+)
+
+# Copy Mozilla-created files
+
+echo "COPYING..."
+mkdir $ZYDISNEW
+cp zydis/{README.md,ZydisAPI.{cpp,h},Zy*ExportConfig.h,update.sh} $ZYDISNEW
+
+# Copy selected zydis files, and rename some
+
+echo "COPYING ZYDIS..."
+(
+cd $ZYDISNEW
+cp -R $ZYDISTMP/zydis/src Zydis
+cp -R $ZYDISTMP/zydis/include/Zydis/* Zydis
+cp $ZYDISTMP/zydis/LICENSE Zydis
+cp -R $ZYDISTMP/zydis/dependencies/zycore/src/ Zycore
+cp -R $ZYDISTMP/zydis/dependencies/zycore/include/Zycore/* Zycore
+cp $ZYDISTMP/zydis/dependencies/zycore/LICENSE Zycore
+rm -f Zycore/API/{Synchronization*,Terminal*,Thread*}
+mv Zydis/String.c Zydis/ZydisString.c
+mv Zycore/String.c Zycore/ZycoreString.c
+( cd $ZYDISTMP/zydis ; git log -n 1 | grep '^commit' | awk '{ print $2 }' ) > imported-revision.txt
+)
+
+# Rewrite include paths to be Firefox-canonical and reflect new
+# locations of files.
+
+echo "REWRITING..."
+(
+cd $ZYDISNEW
+for fn in $(find . -name '*.h' -o -name '*.c'); do
+     cat $fn | gawk '
+{ if (match($0, /( *# *include +)<(Zy.*ExportConfig.h|Zy(dis|core).*\.h)>/, res)) {
+    print res[1] "\"zydis/" res[2] "\""
+    next
+  } else if (match($0, /( *# *include +)<(Generated\/.*\.inc)>/, res)) {
+    print res[1] "\"zydis/Zydis/" res[2] "\""
+    next
+  }
+  print $0 }' > $fn.bak
+     mv $fn.bak $fn
+done
+)
+
+# Generate moz.build from the sources
+
+echo "GENERATING MOZ.BUILD..."
+(
+cd $ZYDISNEW
+(
+cat <<EOF
+# This file was generated by update.sh
+
+FINAL_LIBRARY = 'js'
+
+# Includes should be relative to parent path
+LOCAL_INCLUDES += [
+    '!..',
+    '..'
+]
+
+include('../js-config.mozbuild')
+include('../js-cxxflags.mozbuild')
+
+if CONFIG['JS_CODEGEN_X64'] or CONFIG['JS_CODEGEN_X86']:
+    SOURCES += [
+EOF
+for fn in $(find . -name '*.c' -o -name '*.cpp' | ( LC_ALL=C sort --ignore-case ) | sed 's/\.\///'); do
+    echo "        '$fn',"
+done
+cat <<EOF
+    ]
+EOF
+) > moz.build
+)
+
+echo "CLEANING UP..."
+mv zydis $ZYDISOLD
+mv $ZYDISNEW zydis
+rm -rf $ZYDISTMP