1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 #ifndef _LINK_H_ 29 #define _LINK_H_ 30 31 #include <sys/types.h> 32 #include <elf.h> 33 34 __BEGIN_DECLS 35 36 #if __LP64__ 37 #define ElfW(type) Elf64_ ## type 38 #else 39 #define ElfW(type) Elf32_ ## type 40 #endif 41 42 struct dl_phdr_info { 43 ElfW(Addr) dlpi_addr; 44 const char* dlpi_name; 45 const ElfW(Phdr)* dlpi_phdr; 46 ElfW(Half) dlpi_phnum; 47 }; 48 49 int dl_iterate_phdr(int (*)(struct dl_phdr_info*, size_t, void*), void*); 50 51 #ifdef __arm__ 52 typedef long unsigned int* _Unwind_Ptr; 53 _Unwind_Ptr dl_unwind_find_exidx(_Unwind_Ptr, int*); 54 #endif 55 56 /* Used by the dynamic linker to communicate with the debugger. */ 57 struct link_map { 58 ElfW(Addr) l_addr; 59 char* l_name; 60 ElfW(Dyn)* l_ld; 61 struct link_map* l_next; 62 struct link_map* l_prev; 63 }; 64 65 /* Used by the dynamic linker to communicate with the debugger. */ 66 struct r_debug { 67 int32_t r_version; 68 struct link_map* r_map; 69 ElfW(Addr) r_brk; 70 enum { 71 RT_CONSISTENT, 72 RT_ADD, 73 RT_DELETE 74 } r_state; 75 ElfW(Addr) r_ldbase; 76 }; 77 78 __END_DECLS 79 80 #endif /* _LINK_H_ */ 81