elfxx-aarch64.h revision 1.1.1.5
1 /* AArch64-specific backend routines. 2 Copyright (C) 2009-2020 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 extern void bfd_elf64_aarch64_init_maps 22 (bfd *); 23 24 extern void bfd_elf32_aarch64_init_maps 25 (bfd *); 26 27 /* Types of PLTs based on the level of security. This would be a 28 bit-mask to denote which of the combinations of security features 29 are enabled: 30 - No security feature PLTs 31 - PLTs with BTI instruction 32 - PLTs with PAC instruction 33 */ 34 typedef enum 35 { 36 PLT_NORMAL = 0x0, /* Normal plts. */ 37 PLT_BTI = 0x1, /* plts with bti. */ 38 PLT_PAC = 0x2, /* plts with pointer authentication. */ 39 PLT_BTI_PAC = PLT_BTI | PLT_PAC 40 } aarch64_plt_type; 41 42 /* To indicate if BTI is enabled with/without warning. */ 43 typedef enum 44 { 45 BTI_NONE = 0, /* BTI is not enabled. */ 46 BTI_WARN = 1, /* BTI is enabled with -z force-bti. */ 47 } aarch64_enable_bti_type; 48 49 /* A structure to encompass all information coming from BTI or PAC 50 related command line options. This involves the "PLT_TYPE" to determine 51 which version of PLTs to pick and "BTI_TYPE" to determine if 52 BTI should be turned on with any warnings. */ 53 typedef struct 54 { 55 aarch64_plt_type plt_type; 56 aarch64_enable_bti_type bti_type; 57 } aarch64_bti_pac_info; 58 59 /* An enum to define what kind of erratum fixes we should apply. This gives the 60 user a bit more control over the sequences we generate. */ 61 typedef enum 62 { 63 ERRAT_NONE = (1 << 0), /* No erratum workarounds allowed. */ 64 ERRAT_ADR = (1 << 1), /* Erratum workarounds using ADR allowed. */ 65 ERRAT_ADRP = (1 << 2), /* Erratum workarounds using ADRP are allowed. */ 66 } erratum_84319_opts; 67 68 extern void bfd_elf64_aarch64_set_options 69 (bfd *, struct bfd_link_info *, int, int, int, int, erratum_84319_opts, int, 70 aarch64_bti_pac_info); 71 72 extern void bfd_elf32_aarch64_set_options 73 (bfd *, struct bfd_link_info *, int, int, int, int, erratum_84319_opts, int, 74 aarch64_bti_pac_info); 75 76 /* AArch64 stub generation support for ELF64. Called from the linker. */ 77 extern int elf64_aarch64_setup_section_lists 78 (bfd *, struct bfd_link_info *); 79 extern void elf64_aarch64_next_input_section 80 (struct bfd_link_info *, struct bfd_section *); 81 extern bfd_boolean elf64_aarch64_size_stubs 82 (bfd *, bfd *, struct bfd_link_info *, bfd_signed_vma, 83 struct bfd_section * (*) (const char *, struct bfd_section *), 84 void (*) (void)); 85 extern bfd_boolean elf64_aarch64_build_stubs 86 (struct bfd_link_info *); 87 /* AArch64 stub generation support for ELF32. Called from the linker. */ 88 extern int elf32_aarch64_setup_section_lists 89 (bfd *, struct bfd_link_info *); 90 extern void elf32_aarch64_next_input_section 91 (struct bfd_link_info *, struct bfd_section *); 92 extern bfd_boolean elf32_aarch64_size_stubs 93 (bfd *, bfd *, struct bfd_link_info *, bfd_signed_vma, 94 struct bfd_section * (*) (const char *, struct bfd_section *), 95 void (*) (void)); 96 extern bfd_boolean elf32_aarch64_build_stubs 97 (struct bfd_link_info *); 98 99 /* Take the PAGE component of an address or offset. */ 100 #define PG(x) ((x) & ~ (bfd_vma) 0xfff) 101 #define PG_OFFSET(x) ((x) & (bfd_vma) 0xfff) 102 103 #define AARCH64_ADR_OP 0x10000000 104 #define AARCH64_ADRP_OP 0x90000000 105 #define AARCH64_ADRP_OP_MASK 0x9F000000 106 107 extern bfd_signed_vma 108 _bfd_aarch64_sign_extend (bfd_vma, int); 109 110 extern uint32_t 111 _bfd_aarch64_decode_adrp_imm (uint32_t); 112 113 extern uint32_t 114 _bfd_aarch64_reencode_adr_imm (uint32_t, uint32_t); 115 116 extern bfd_reloc_status_type 117 _bfd_aarch64_elf_put_addend (bfd *, bfd_byte *, bfd_reloc_code_real_type, 118 reloc_howto_type *, bfd_signed_vma); 119 120 extern bfd_vma 121 _bfd_aarch64_elf_resolve_relocation (bfd *, bfd_reloc_code_real_type, bfd_vma, 122 bfd_vma, bfd_vma, bfd_boolean); 123 124 extern bfd_boolean 125 _bfd_aarch64_elf_grok_prstatus (bfd *, Elf_Internal_Note *); 126 127 extern bfd_boolean 128 _bfd_aarch64_elf_grok_psinfo (bfd *, Elf_Internal_Note *); 129 130 extern char * 131 _bfd_aarch64_elf_write_core_note (bfd *, char *, int *, int, ...); 132 133 #define elf_backend_grok_prstatus _bfd_aarch64_elf_grok_prstatus 134 #define elf_backend_grok_psinfo _bfd_aarch64_elf_grok_psinfo 135 #define elf_backend_write_core_note _bfd_aarch64_elf_write_core_note 136 137 extern bfd * 138 _bfd_aarch64_elf_link_setup_gnu_properties (struct bfd_link_info *, 139 uint32_t *); 140 141 extern enum elf_property_kind 142 _bfd_aarch64_elf_parse_gnu_properties (bfd *, unsigned int, 143 bfd_byte *, unsigned int); 144 145 extern bfd_boolean 146 _bfd_aarch64_elf_merge_gnu_properties (struct bfd_link_info *, bfd *, 147 elf_property *, elf_property *, 148 uint32_t); 149 150 extern void 151 _bfd_aarch64_elf_link_fixup_gnu_properties (struct bfd_link_info *, 152 elf_property_list **); 153 154 #define elf_backend_parse_gnu_properties \ 155 _bfd_aarch64_elf_parse_gnu_properties 156 157 #define elf_backend_fixup_gnu_properties \ 158 _bfd_aarch64_elf_link_fixup_gnu_properties 159
Indexes created Sat Apr 18 00:22:28 UTC 2026