Fix symbol lookup order during relocation
Relocate symbol against DF_1_GLOBAL shared libraries
loaded before this shared library. This includes
main executable, ld_preloads and other libraries
that have DF_1_GLOBAL flag set.
Bug: 2643900
Bug: 15432753
Change-Id: Ia788748be59b739d1c7e62b978e7e255f9e65c7b
diff --git a/tests/libs/dl_preempt_library_1.cpp b/tests/libs/dl_preempt_library_1.cpp
new file mode 100644
index 0000000..b4d81d5
--- /dev/null
+++ b/tests/libs/dl_preempt_library_1.cpp
@@ -0,0 +1,45 @@
+/*
+ * 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.
+ */
+
+// This one should be preempted by the function
+// defined in the main executable.
+extern "C" int __attribute__((weak)) main_global_default_serial() {
+ return 2716057;
+}
+
+// Even though this one is defined by the main
+// executable it should not be preempted
+// because of protected visibility
+extern "C" int __attribute__((weak, visibility("protected"))) main_global_protected_serial() {
+ return 3370318;
+}
+
+extern "C" int main_global_default_get_serial() {
+ return main_global_default_serial();
+}
+
+extern "C" int main_global_protected_get_serial() {
+ return main_global_protected_serial();
+}
+
+// Trying to preempt functions from a DT_NEEDED .so
+extern "C" int lib_global_default_serial() {
+ return 3370318;
+}
+
+extern "C" int lib_global_protected_serial() {
+ return 2716057;
+}