1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 // This one should be preempted by the function 18 // defined in the main executable. main_global_default_serial()19extern "C" int __attribute__((weak)) main_global_default_serial() { 20 return 2716057; 21 } 22 23 // Even though this one is defined by the main 24 // executable it should not be preempted 25 // because of protected visibility main_global_protected_serial()26extern "C" int __attribute__((weak, visibility("protected"))) main_global_protected_serial() { 27 return 3370318; 28 } 29 main_global_default_get_serial()30extern "C" int main_global_default_get_serial() { 31 return main_global_default_serial(); 32 } 33 main_global_protected_get_serial()34extern "C" int main_global_protected_get_serial() { 35 return main_global_protected_serial(); 36 } 37 38 // Trying to preempt functions from a DT_NEEDED .so lib_global_default_serial()39extern "C" int lib_global_default_serial() { 40 return 3370318; 41 } 42 lib_global_protected_serial()43extern "C" int lib_global_protected_serial() { 44 return 2716057; 45 } 46