diff --git a/benchmarks/Android.mk b/benchmarks/Android.mk
index f163463..5ce8542 100644
--- a/benchmarks/Android.mk
+++ b/benchmarks/Android.mk
@@ -73,26 +73,22 @@
 include $(BUILD_HOST_EXECUTABLE)
 
 ifeq ($(HOST_OS)-$(HOST_ARCH),$(filter $(HOST_OS)-$(HOST_ARCH),linux-x86 linux-x86_64))
-ifeq ($(TARGET_ARCH),x86)
-LINKER = linker
-NATIVE_SUFFIX=32
-else
-LINKER = linker64
-NATIVE_SUFFIX=64
-endif
+include $(LOCAL_PATH)/../build/run-on-host.mk
 
-bionic-benchmarks-run-on-host: bionic-benchmarks $(TARGET_OUT_EXECUTABLES)/$(LINKER) $(TARGET_OUT_EXECUTABLES)/sh
-	if [ ! -d /system ]; then \
-	  echo "Attempting to create /system"; \
-	  sudo mkdir -p -m 0777 /system; \
-	fi
-	mkdir -p $(TARGET_OUT_DATA)/local/tmp
-	ln -fs `realpath $(TARGET_OUT)/bin` /system/
-	ln -fs `realpath $(TARGET_OUT)/etc` /system/
+ifeq ($(TARGET_ARCH),$(filter $(TARGET_ARCH),x86 x86_64))
+bionic-benchmarks-run-on-host32: bionic-benchmarks bionic-prepare-run-on-host
 	ANDROID_DATA=$(TARGET_OUT_DATA) \
 	ANDROID_ROOT=$(TARGET_OUT) \
-	LD_LIBRARY_PATH=$(TARGET_OUT_SHARED_LIBRARIES) \
-		$(TARGET_OUT_EXECUTABLES)/bionic-benchmarks$(NATIVE_SUFFIX) $(BIONIC_BENCHMARKS_FLAGS)
-endif # linux-x86
+		$(TARGET_OUT_EXECUTABLES)/bionic-benchmarks32 $(BIONIC_BENCHMARKS_FLAGS)
+endif
+
+ifeq ($(TARGET_IS_64_BIT),true)
+bionic-benchmarks-run-on-host64: bionic-benchmarks bionic-prepare-run-on-host
+	ANDROID_DATA=$(TARGET_OUT_DATA) \
+	ANDROID_ROOT=$(TARGET_OUT) \
+		$(TARGET_OUT_EXECUTABLES)/bionic-benchmarks64 $(BIONIC_BENCHMARKS_FLAGS)
+endif
+
+endif
 
 endif # !BUILD_TINY_ANDROID
diff --git a/build/run-on-host.mk b/build/run-on-host.mk
new file mode 100644
index 0000000..f016361
--- /dev/null
+++ b/build/run-on-host.mk
@@ -0,0 +1,39 @@
+#
+# Copyright (C) 2014 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.
+#
+
+ifneq ($(TARGET_ARCH),$(filter $(TARGET_ARCH),arm mips x86))
+LINKER = linker64
+else
+LINKER = linker
+endif
+
+ifeq ($(TARGET_ARCH),$(filter $(TARGET_ARCH),x86 x86_64))
+# gtest needs ANDROID_DATA/local/tmp for death test output.
+# Make sure to create ANDROID_DATA/local/tmp if doesn't exist.
+# bionic itself should always work relative to ANDROID_DATA or ANDROID_ROOT.
+bionic-prepare-run-on-host: $(TARGET_OUT_EXECUTABLES)/$(LINKER) $(TARGET_OUT)/etc/hosts $(TARGET_OUT_EXECUTABLES)/sh
+	if [ ! -d /system ]; then \
+	  echo "Attempting to create /system"; \
+	  sudo mkdir -p -m 0777 /system; \
+	fi
+	mkdir -p $(TARGET_OUT_DATA)/local/tmp
+	ln -fs `realpath $(TARGET_OUT)/bin` /system/
+	ln -fs `realpath $(TARGET_OUT)/etc` /system/
+	ln -fs `realpath $(TARGET_OUT)/lib` /system/
+	if [ -d "$(TARGET_OUT)/lib64" ]; then \
+	  ln -fs `realpath $(TARGET_OUT)/lib64` /system/; \
+	fi
+endif
diff --git a/tests/Android.mk b/tests/Android.mk
index 6010def..93ab9bd 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -373,14 +373,6 @@
 # Host glibc tests.
 # -----------------------------------------------------------------------------
 
-ifneq ($(TARGET_ARCH),$(filter $(TARGET_ARCH),arm mips x86))
-LINKER = linker64
-NATIVE_TEST_SUFFIX=64
-else
-LINKER = linker
-NATIVE_TEST_SUFFIX=32
-endif
-
 # gtest needs ANDROID_DATA/local/tmp for death test output.
 # Make sure to create ANDROID_DATA/local/tmp if doesn't exist.
 # Use the current target out directory as ANDROID_DATA.
@@ -389,46 +381,32 @@
 	mkdir -p $(TARGET_OUT_DATA)/local/tmp
 	ANDROID_DATA=$(TARGET_OUT_DATA) \
 	ANDROID_ROOT=$(TARGET_OUT) \
-		$(HOST_OUT_EXECUTABLES)/bionic-unit-tests-glibc$(NATIVE_TEST_SUFFIX) $(BIONIC_TEST_FLAGS)
+		$(HOST_OUT_EXECUTABLES)/bionic-unit-tests-glibc64 $(BIONIC_TEST_FLAGS)
 
 # -----------------------------------------------------------------------------
 # Run the unit tests built against x86 bionic on an x86 host.
 # -----------------------------------------------------------------------------
 
+include $(LOCAL_PATH)/../build/run-on-host.mk
+
 ifeq ($(TARGET_ARCH),$(filter $(TARGET_ARCH),x86 x86_64))
-# gtest needs ANDROID_DATA/local/tmp for death test output.
-# Make sure to create ANDROID_DATA/local/tmp if doesn't exist.
-# bionic itself should always work relative to ANDROID_DATA or ANDROID_ROOT.
 # BIONIC_TEST_FLAGS is either empty or it comes from the user.
-bionic-unit-tests-run-on-host-prepare: $(TARGET_OUT_EXECUTABLES)/$(LINKER) $(TARGET_OUT)/etc/hosts $(TARGET_OUT_EXECUTABLES)/sh
-	if [ ! -d /system ]; then \
-	  echo "Attempting to create /system"; \
-	  sudo mkdir -p -m 0777 /system; \
-	fi
-	mkdir -p $(TARGET_OUT_DATA)/local/tmp
-	ln -fs `realpath $(TARGET_OUT)/bin` /system/
-	ln -fs `realpath $(TARGET_OUT)/etc` /system/
-	ln -fs `realpath $(TARGET_OUT)/lib` /system/
-	if [ -d "$(TARGET_OUT)/lib64" ]; then \
-	  ln -fs `realpath $(TARGET_OUT)/lib64` /system/; \
-	fi
-
-bionic-unit-tests-run-on-host: bionic-unit-tests bionic-unit-tests-run-on-host-prepare
+bionic-unit-tests-run-on-host32: bionic-unit-tests bionic-prepare-run-on-host
 	ANDROID_DATA=$(TARGET_OUT_DATA) \
 	ANDROID_DNS_MODE=local \
 	ANDROID_ROOT=$(TARGET_OUT) \
-		$(TARGET_OUT_DATA_NATIVE_TESTS)/bionic-unit-tests/bionic-unit-tests$(NATIVE_TEST_SUFFIX) $(BIONIC_TEST_FLAGS)
-endif
+		$(TARGET_OUT_DATA)/nativetest/bionic-unit-tests/bionic-unit-tests32 $(BIONIC_TEST_FLAGS)
 
-ifeq ($(TARGET_ARCH),$(filter $(TARGET_ARCH),x86_64))
-# add target to run lp32 tests
-bionic-unit-tests-run-on-host32: bionic-unit-tests_32 bionic-unit-tests-run-on-host-prepare
+ifeq ($(TARGET_IS_64_BIT),true)
+# add target to run lp64 tests
+bionic-unit-tests-run-on-host64: bionic-unit-tests bionic-prepare-run-on-host
 	ANDROID_DATA=$(TARGET_OUT_DATA) \
 	ANDROID_DNS_MODE=local \
 	ANDROID_ROOT=$(TARGET_OUT) \
-		$(2ND_TARGET_OUT_DATA_NATIVE_TESTS)/bionic-unit-tests/bionic-unit-tests32 $(BIONIC_TEST_FLAGS)
+		$(TARGET_OUT_DATA)/nativetest64/bionic-unit-tests/bionic-unit-tests64 $(BIONIC_TEST_FLAGS)
 endif
 
+endif # x86 x86_64
 endif # linux-x86
 
 include $(call first-makefiles-under,$(LOCAL_PATH))