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      1 /*
      2  * Copyright (C) 2007 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 #include <dlfcn.h>
     18 /* These are stubs for functions that are actually defined
     19  * in the dynamic linker (dlfcn.c), and hijacked at runtime.
     20  */
     21 void *dlopen(const char *filename, int flag) { return 0; }
     22 const char *dlerror(void) { return 0; }
     23 void *dlsym(void *handle, const char *symbol) { return 0; }
     24 int dladdr(void *addr, Dl_info *info) { return 0; }
     25 int dlclose(void *handle) { return 0; }
     26 
     27 #ifdef __arm__
     28 void *dl_unwind_find_exidx(void *pc, int *pcount) { return 0; }
     29 #elif defined(__i386__) || defined(__sh__)
     30 /* we munge the cb definition so we don't have to include any headers here.
     31  * It won't affect anything since these are just symbols anyway */
     32 int dl_iterate_phdr(int (*cb)(void *info, void *size, void *data),
     33                     void *data) { return 0; }
     34 #else
     35 #error Unsupported architecture. Only arm and x86 are supported.
     36 #endif
     37