Tool for boot class path args for ART host tools.

Test: host_bcp.sh /system/framework/arm64/boot.oat
Test: host_bcp.sh $ANDROID_PRODUCT_OUT/system/framework/arm64/boot.oat
Bug: 128990084
Change-Id: I315462afa4848b92d32fdf4f11bac941a2e93768

1 files changed, 75 insertions, 0 deletions

diff --git a/tools/host_bcp.sh b/tools/host_bcp.sh
new file mode 100755
index 0000000000..65a48bfaf6
--- /dev/null
+++ b/tools/host_bcp.sh
@@ -0,0 +1,75 @@
+#!/bin/bash
+#
+# Copyright 2019 The Android Open Source Project
+#
+# 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.
+
+if [[ ${#@} != 1 ]]; then
+  cat <<EOF
+Usage
+  host_bcp <image> | xargs <art-host-tool> ...
+Extracts boot class path locations from <image> and outputs the appropriate
+  --runtime-arg -Xbootclasspath:...
+  --runtime-arg -Xbootclasspath-locations:...
+arguments for many ART host tools based on the \$ANDROID_PRODUCT_OUT variable
+and existing \$ANDROID_PRODUCT_OUT/apex/com.android.runtime* paths.
+EOF
+  exit 1
+fi
+
+IMAGE=$1
+if [[ ! -e ${IMAGE} ]]; then
+  IMAGE=${ANDROID_PRODUCT_OUT}$1
+  if [[ ! -e ${IMAGE} ]]; then
+    echo "Neither $1 nor ${ANDROID_PRODUCT_OUT}$1 exists."
+    exit 1
+  fi
+fi
+BCPL=`grep -az -A1 -E '^bootclasspath$' ${IMAGE} 2>/dev/null | \
+      xargs -0 echo | gawk '{print $2}'`
+if [[ "x${BCPL}" == "x" ]]; then
+  echo "Failed to extract boot class path locations from $1."
+  exit 1
+fi
+
+RUNTIME_APEX=/apex/com.android.runtime
+RUNTIME_APEX_SELECTED=
+for d in `ls -1 -d ${ANDROID_PRODUCT_OUT}${RUNTIME_APEX}* 2>/dev/null`; do
+  if [[ "x${RUNTIME_APEX_SELECTED}" != "x" ]]; then
+    echo "Multiple Runtime apex dirs: ${RUNTIME_APEX_SELECTED}, ${d}."
+    exit 1
+  fi
+  RUNTIME_APEX_SELECTED=${d}
+done
+if [[ "x${RUNTIME_APEX_SELECTED}" == "x" ]]; then
+  echo "No Runtime apex dir."
+  exit 1
+fi
+
+BCP=
+OLD_IFS=${IFS}
+IFS=:
+for COMPONENT in ${BCPL}; do
+  HEAD=${ANDROID_PRODUCT_OUT}
+  TAIL=${COMPONENT}
+  if [[ ${COMPONENT:0:${#RUNTIME_APEX}} = ${RUNTIME_APEX} ]]; then
+    HEAD=${RUNTIME_APEX_SELECTED}
+    TAIL=${COMPONENT:${#RUNTIME_APEX}}
+  fi
+  BCP="${BCP}:${HEAD}${TAIL}"
+done
+IFS=${OLD_IFS}
+BCP=${BCP:1}  # Strip leading ':'.
+
+echo --runtime-arg -Xbootclasspath:${BCP} \
+     --runtime-arg -Xbootclasspath-locations:${BCPL}