projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| d5efd131 | 1 | /* Configuration of lookup functions. |
| d4697bc9 | 2 | Copyright (C) 2000-2014 Free Software Foundation, Inc. |
| d5efd131 MF |
3 | This file is part of the GNU C Library. |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 6 | modify it under the terms of the GNU Lesser General Public | |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| 9 | ||
| 10 | The GNU C Library is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | Lesser General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public | |
| 75efb018 MF |
16 | License along with the GNU C Library; if not, see |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| d5efd131 MF |
18 | |
| 19 | #define ELF_FUNCTION_PTR_IS_SPECIAL | |
| 20 | #define DL_UNMAP_IS_SPECIAL | |
| 21 | ||
| 22 | #include <dl-fptr.h> | |
| 23 | ||
| 24 | /* We do not support copy relocations for IA-64. */ | |
| 25 | #define DL_NO_COPY_RELOCS | |
| 26 | ||
| 27 | /* Forward declaration. */ | |
| 28 | struct link_map; | |
| 29 | ||
| 30 | extern void *_dl_symbol_address (struct link_map *map, const Elf64_Sym *ref); | |
| 31 | ||
| 32 | #define DL_SYMBOL_ADDRESS(map, ref) _dl_symbol_address(map, ref) | |
| 33 | ||
| 34 | extern Elf64_Addr _dl_lookup_address (const void *address); | |
| 35 | ||
| 36 | #define DL_LOOKUP_ADDRESS(addr) _dl_lookup_address (addr) | |
| 37 | ||
| 38 | extern void _dl_unmap (struct link_map *map); | |
| 39 | ||
| 40 | #define DL_UNMAP(map) _dl_unmap (map) | |
| 41 | ||
| daf75146 GM |
42 | #define DL_DT_FUNCTION_ADDRESS(map, start, attr, addr) \ |
| 43 | attr volatile unsigned long int fptr[2]; \ | |
| 44 | fptr[0] = (unsigned long int) (start); \ | |
| 45 | fptr[1] = (map)->l_info[DT_PLTGOT]->d_un.d_ptr; \ | |
| 46 | addr = (ElfW(Addr)) fptr; \ | |
| 47 | ||
| 48 | #define DL_CALL_DT_INIT(map, start, argc, argv, env) \ | |
| 49 | { \ | |
| 50 | ElfW(Addr) addr; \ | |
| 51 | DL_DT_FUNCTION_ADDRESS(map, start, , addr) \ | |
| 52 | init_t init = (init_t) addr; \ | |
| 53 | init (argc, argv, env); \ | |
| 54 | } | |
| 55 | ||
| 56 | #define DL_CALL_DT_FINI(map, start) \ | |
| 57 | { \ | |
| 58 | ElfW(Addr) addr; \ | |
| 59 | DL_DT_FUNCTION_ADDRESS(map, start, , addr) \ | |
| 60 | fini_t fini = (fini_t) addr; \ | |
| 61 | fini (); \ | |
| 62 | } | |
| 63 | ||
| d5efd131 MF |
64 | /* The type of the return value of fixup/profile_fixup. */ |
| 65 | #define DL_FIXUP_VALUE_TYPE struct fdesc | |
| 66 | /* Construct a value of type DL_FIXUP_VALUE_TYPE from a code address | |
| 67 | and a link map. */ | |
| 68 | #define DL_FIXUP_MAKE_VALUE(map, addr) \ | |
| 69 | ((struct fdesc) { (addr), (map)->l_info[DT_PLTGOT]->d_un.d_ptr }) | |
| 70 | /* Extract the code address from a value of type DL_FIXUP_MAKE_VALUE. | |
| 71 | */ | |
| 72 | #define DL_FIXUP_VALUE_CODE_ADDR(value) (value).ip | |
| 73 | ||
| 74 | #define DL_FIXUP_VALUE_ADDR(value) ((uintptr_t) &(value)) | |
| 75 | #define DL_FIXUP_ADDR_VALUE(addr) (*(struct fdesc *) (addr)) |