1/* AArch64-specific backend routines.
2   Copyright (C) 2009-2017 Free Software Foundation, Inc.
3   Contributed by ARM Ltd.
4
5   This file is part of BFD, the Binary File Descriptor library.
6
7   This program is free software; you can redistribute it and/or modify
8   it under the terms of the GNU General Public License as published by
9   the Free Software Foundation; either version 3 of the License, or
10   (at your option) any later version.
11
12   This program is distributed in the hope that it will be useful,
13   but WITHOUT ANY WARRANTY; without even the implied warranty of
14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15   GNU General Public License for more details.
16
17   You should have received a copy of the GNU General Public License
18   along with this program; see the file COPYING3. If not,
19   see <http://www.gnu.org/licenses/>.  */
20
21#include "bfd.h"
22#include "elf-bfd.h"
23#include "stdint.h"
24
25/* Take the PAGE component of an address or offset.  */
26#define PG(x)        ((x) & ~ (bfd_vma) 0xfff)
27#define PG_OFFSET(x) ((x) &   (bfd_vma) 0xfff)
28
29#define AARCH64_ADR_OP		0x10000000
30#define AARCH64_ADRP_OP		0x90000000
31#define AARCH64_ADRP_OP_MASK	0x9F000000
32
33extern bfd_signed_vma
34_bfd_aarch64_sign_extend (bfd_vma, int);
35
36extern uint32_t
37_bfd_aarch64_decode_adrp_imm (uint32_t);
38
39extern uint32_t
40_bfd_aarch64_reencode_adr_imm (uint32_t, uint32_t);
41
42extern bfd_reloc_status_type
43_bfd_aarch64_elf_put_addend (bfd *, bfd_byte *, bfd_reloc_code_real_type,
44			     reloc_howto_type *, bfd_signed_vma);
45
46extern bfd_vma
47_bfd_aarch64_elf_resolve_relocation (bfd_reloc_code_real_type, bfd_vma, bfd_vma,
48				     bfd_vma, bfd_boolean);
49
50extern bfd_boolean
51_bfd_aarch64_elf_add_symbol_hook (bfd *, struct bfd_link_info *,
52				  Elf_Internal_Sym *, const char **,
53				  flagword *, asection **, bfd_vma *);
54
55extern bfd_boolean
56_bfd_aarch64_elf_grok_prstatus (bfd *, Elf_Internal_Note *);
57
58extern bfd_boolean
59_bfd_aarch64_elf_grok_psinfo (bfd *, Elf_Internal_Note *);
60
61extern char *
62_bfd_aarch64_elf_write_core_note (bfd *, char *, int *, int, ...);
63
64#define elf_backend_add_symbol_hook	_bfd_aarch64_elf_add_symbol_hook
65#define elf_backend_grok_prstatus	_bfd_aarch64_elf_grok_prstatus
66#define elf_backend_grok_psinfo         _bfd_aarch64_elf_grok_psinfo
67#define elf_backend_write_core_note     _bfd_aarch64_elf_write_core_note
68