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1 | /* Machine-dependent ELF indirect relocation inline functions. |
---|---|
2 | Version for S/390 32 and 64 bit. |
3 | Copyright (C) 2012-2022 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_IRELA 1 |
28 | |
29 | static inline ElfW(Addr) |
30 | __attribute ((always_inline)) |
31 | elf_ifunc_invoke (ElfW(Addr) addr) |
32 | { |
33 | return ((ElfW(Addr) (*) (unsigned long int)) (addr)) (GLRO(dl_hwcap)); |
34 | } |
35 | |
36 | static inline void |
37 | __attribute ((always_inline)) |
38 | elf_irela (const ElfW(Rela) *reloc) |
39 | { |
40 | ElfW(Addr) *const reloc_addr = (void *) reloc->r_offset; |
41 | const unsigned long int r_type = ELFW(R_TYPE) (reloc->r_info); |
42 | |
43 | if (__glibc_likely (r_type == R_390_IRELATIVE)) |
44 | { |
45 | ElfW(Addr) value = elf_ifunc_invoke(reloc->r_addend); |
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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