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| 1 | /* Machine-dependent ELF indirect relocation inline functions. |
|---|---|
| 2 | ARM version. |
| 3 | Copyright (C) 2009-2022 Free Software Foundation, Inc. |
| 4 | This file is part of the GNU C Library. |
| 5 | |
| 6 | The GNU C Library is free software; you can redistribute it and/or |
| 7 | modify it under the terms of the GNU Lesser General Public |
| 8 | License as published by the Free Software Foundation; either |
| 9 | version 2.1 of the License, or (at your option) any later version. |
| 10 | |
| 11 | The GNU C Library is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | Lesser General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU Lesser General Public |
| 17 | License along with the GNU C Library. If not, see |
| 18 | <https://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #ifndef _DL_IREL_H |
| 21 | #define _DL_IREL_H |
| 22 | |
| 23 | #include <stdio.h> |
| 24 | #include <unistd.h> |
| 25 | #include <ldsodefs.h> |
| 26 | |
| 27 | #define ELF_MACHINE_IREL 1 |
| 28 | |
| 29 | static inline Elf32_Addr |
| 30 | __attribute ((always_inline)) |
| 31 | elf_ifunc_invoke (Elf32_Addr addr) |
| 32 | { |
| 33 | return ((Elf32_Addr (*) (unsigned long int)) (addr)) (GLRO(dl_hwcap)); |
| 34 | } |
| 35 | |
| 36 | static inline void |
| 37 | __attribute ((always_inline)) |
| 38 | elf_irel (const Elf32_Rel *reloc) |
| 39 | { |
| 40 | Elf32_Addr *const reloc_addr = (void *) reloc->r_offset; |
| 41 | const unsigned long int r_type = ELF32_R_TYPE (reloc->r_info); |
| 42 | |
| 43 | if (__builtin_expect (r_type == R_ARM_IRELATIVE, 1)) |
| 44 | { |
| 45 | Elf32_Addr value = elf_ifunc_invoke (*reloc_addr); |
| 46 | *reloc_addr = value; |
| 47 | } |
| 48 | else |
| 49 | __libc_fatal ("Unexpected reloc type in static binary.\n"); |
| 50 | } |
| 51 | |
| 52 | #endif /* dl-irel.h */ |
| 53 |
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