platform_bionic/tests/libs/dl_preempt_library_1.cpp
Dmitriy Ivanov d225a5e652 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
2014-10-31 11:39:51 -07:00

45 lines
1.4 KiB
C++

/*
* 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;
}