projects / thirdparty / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| cec5225b | 1 | /* AArch64-specific support for NN-bit ELF. |
| d87bef3a | 2 | Copyright (C) 2009-2023 Free Software Foundation, Inc. |
| a06ea964 NC |
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 | /* Notes on implementation: | |
| 22 | ||
| 23 | Thread Local Store (TLS) | |
| 24 | ||
| 25 | Overview: | |
| 26 | ||
| 27 | The implementation currently supports both traditional TLS and TLS | |
| 28 | descriptors, but only general dynamic (GD). | |
| 29 | ||
| 30 | For traditional TLS the assembler will present us with code | |
| 31 | fragments of the form: | |
| 32 | ||
| 33 | adrp x0, :tlsgd:foo | |
| 07d6d2b8 | 34 | R_AARCH64_TLSGD_ADR_PAGE21(foo) |
| a06ea964 | 35 | add x0, :tlsgd_lo12:foo |
| 07d6d2b8 | 36 | R_AARCH64_TLSGD_ADD_LO12_NC(foo) |
| a06ea964 NC |
37 | bl __tls_get_addr |
| 38 | nop | |
| 39 | ||
| 40 | For TLS descriptors the assembler will present us with code | |
| 41 | fragments of the form: | |
| 42 | ||
| 07d6d2b8 AM |
43 | adrp x0, :tlsdesc:foo R_AARCH64_TLSDESC_ADR_PAGE21(foo) |
| 44 | ldr x1, [x0, #:tlsdesc_lo12:foo] R_AARCH64_TLSDESC_LD64_LO12(foo) | |
| 45 | add x0, x0, #:tlsdesc_lo12:foo R_AARCH64_TLSDESC_ADD_LO12(foo) | |
| a06ea964 | 46 | .tlsdesccall foo |
| 07d6d2b8 | 47 | blr x1 R_AARCH64_TLSDESC_CALL(foo) |
| a06ea964 NC |
48 | |
| 49 | The relocations R_AARCH64_TLSGD_{ADR_PREL21,ADD_LO12_NC} against foo | |
| 50 | indicate that foo is thread local and should be accessed via the | |
| 51 | traditional TLS mechanims. | |
| 52 | ||
| a6bb11b2 | 53 | The relocations R_AARCH64_TLSDESC_{ADR_PAGE21,LD64_LO12_NC,ADD_LO12_NC} |
| a06ea964 NC |
54 | against foo indicate that 'foo' is thread local and should be accessed |
| 55 | via a TLS descriptor mechanism. | |
| 56 | ||
| 57 | The precise instruction sequence is only relevant from the | |
| 58 | perspective of linker relaxation which is currently not implemented. | |
| 59 | ||
| 60 | The static linker must detect that 'foo' is a TLS object and | |
| 61 | allocate a double GOT entry. The GOT entry must be created for both | |
| 62 | global and local TLS symbols. Note that this is different to none | |
| 63 | TLS local objects which do not need a GOT entry. | |
| 64 | ||
| 65 | In the traditional TLS mechanism, the double GOT entry is used to | |
| 66 | provide the tls_index structure, containing module and offset | |
| a6bb11b2 | 67 | entries. The static linker places the relocation R_AARCH64_TLS_DTPMOD |
| a06ea964 NC |
68 | on the module entry. The loader will subsequently fixup this |
| 69 | relocation with the module identity. | |
| 70 | ||
| 71 | For global traditional TLS symbols the static linker places an | |
| a6bb11b2 | 72 | R_AARCH64_TLS_DTPREL relocation on the offset entry. The loader |
| a06ea964 NC |
73 | will subsequently fixup the offset. For local TLS symbols the static |
| 74 | linker fixes up offset. | |
| 75 | ||
| 76 | In the TLS descriptor mechanism the double GOT entry is used to | |
| 77 | provide the descriptor. The static linker places the relocation | |
| 78 | R_AARCH64_TLSDESC on the first GOT slot. The loader will | |
| 79 | subsequently fix this up. | |
| 80 | ||
| 81 | Implementation: | |
| 82 | ||
| 83 | The handling of TLS symbols is implemented across a number of | |
| 84 | different backend functions. The following is a top level view of | |
| 85 | what processing is performed where. | |
| 86 | ||
| 87 | The TLS implementation maintains state information for each TLS | |
| 88 | symbol. The state information for local and global symbols is kept | |
| 89 | in different places. Global symbols use generic BFD structures while | |
| 90 | local symbols use backend specific structures that are allocated and | |
| 91 | maintained entirely by the backend. | |
| 92 | ||
| 93 | The flow: | |
| 94 | ||
| cec5225b | 95 | elfNN_aarch64_check_relocs() |
| a06ea964 NC |
96 | |
| 97 | This function is invoked for each relocation. | |
| 98 | ||
| 99 | The TLS relocations R_AARCH64_TLSGD_{ADR_PREL21,ADD_LO12_NC} and | |
| a6bb11b2 | 100 | R_AARCH64_TLSDESC_{ADR_PAGE21,LD64_LO12_NC,ADD_LO12_NC} are |
| a06ea964 NC |
101 | spotted. One time creation of local symbol data structures are |
| 102 | created when the first local symbol is seen. | |
| 103 | ||
| 104 | The reference count for a symbol is incremented. The GOT type for | |
| 105 | each symbol is marked as general dynamic. | |
| 106 | ||
| cec5225b | 107 | elfNN_aarch64_allocate_dynrelocs () |
| a06ea964 NC |
108 | |
| 109 | For each global with positive reference count we allocate a double | |
| 110 | GOT slot. For a traditional TLS symbol we allocate space for two | |
| 111 | relocation entries on the GOT, for a TLS descriptor symbol we | |
| 112 | allocate space for one relocation on the slot. Record the GOT offset | |
| 113 | for this symbol. | |
| 114 | ||
| cec5225b | 115 | elfNN_aarch64_size_dynamic_sections () |
| a06ea964 NC |
116 | |
| 117 | Iterate all input BFDS, look for in the local symbol data structure | |
| 118 | constructed earlier for local TLS symbols and allocate them double | |
| 119 | GOT slots along with space for a single GOT relocation. Update the | |
| 120 | local symbol structure to record the GOT offset allocated. | |
| 121 | ||
| cec5225b | 122 | elfNN_aarch64_relocate_section () |
| a06ea964 | 123 | |
| cec5225b | 124 | Calls elfNN_aarch64_final_link_relocate () |
| a06ea964 NC |
125 | |
| 126 | Emit the relevant TLS relocations against the GOT for each TLS | |
| 127 | symbol. For local TLS symbols emit the GOT offset directly. The GOT | |
| 128 | relocations are emitted once the first time a TLS symbol is | |
| 129 | encountered. The implementation uses the LSB of the GOT offset to | |
| 130 | flag that the relevant GOT relocations for a symbol have been | |
| 131 | emitted. All of the TLS code that uses the GOT offset needs to take | |
| 132 | care to mask out this flag bit before using the offset. | |
| 133 | ||
| cec5225b | 134 | elfNN_aarch64_final_link_relocate () |
| a06ea964 NC |
135 | |
| 136 | Fixup the R_AARCH64_TLSGD_{ADR_PREL21, ADD_LO12_NC} relocations. */ | |
| 137 | ||
| 138 | #include "sysdep.h" | |
| 139 | #include "bfd.h" | |
| 140 | #include "libiberty.h" | |
| 141 | #include "libbfd.h" | |
| a06ea964 NC |
142 | #include "elf-bfd.h" |
| 143 | #include "bfdlink.h" | |
| 1419bbe5 | 144 | #include "objalloc.h" |
| a06ea964 | 145 | #include "elf/aarch64.h" |
| caed7120 | 146 | #include "elfxx-aarch64.h" |
| a8bfaadb | 147 | #include "cpu-aarch64.h" |
| a06ea964 | 148 | |
| cec5225b YZ |
149 | #define ARCH_SIZE NN |
| 150 | ||
| 151 | #if ARCH_SIZE == 64 | |
| 152 | #define AARCH64_R(NAME) R_AARCH64_ ## NAME | |
| 153 | #define AARCH64_R_STR(NAME) "R_AARCH64_" #NAME | |
| a6bb11b2 YZ |
154 | #define HOWTO64(...) HOWTO (__VA_ARGS__) |
| 155 | #define HOWTO32(...) EMPTY_HOWTO (0) | |
| cec5225b | 156 | #define LOG_FILE_ALIGN 3 |
| f955cccf | 157 | #define BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC BFD_RELOC_AARCH64_TLSDESC_LD64_LO12 |
| cec5225b YZ |
158 | #endif |
| 159 | ||
| 160 | #if ARCH_SIZE == 32 | |
| 161 | #define AARCH64_R(NAME) R_AARCH64_P32_ ## NAME | |
| 162 | #define AARCH64_R_STR(NAME) "R_AARCH64_P32_" #NAME | |
| a6bb11b2 YZ |
163 | #define HOWTO64(...) EMPTY_HOWTO (0) |
| 164 | #define HOWTO32(...) HOWTO (__VA_ARGS__) | |
| cec5225b | 165 | #define LOG_FILE_ALIGN 2 |
| 07d6d2b8 AM |
166 | #define BFD_RELOC_AARCH64_TLSDESC_LD32_LO12 BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC |
| 167 | #define R_AARCH64_P32_TLSDESC_ADD_LO12 R_AARCH64_P32_TLSDESC_ADD_LO12_NC | |
| cec5225b YZ |
168 | #endif |
| 169 | ||
| a6bb11b2 | 170 | #define IS_AARCH64_TLS_RELOC(R_TYPE) \ |
| 4c0a9a6f JW |
171 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \ |
| 172 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \ | |
| 3c12b054 | 173 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \ |
| 3e8286c0 | 174 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \ |
| 1aa66fb1 | 175 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \ |
| a6bb11b2 | 176 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \ |
| a6bb11b2 | 177 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC \ |
| 4c0a9a6f | 178 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC \ |
| a6bb11b2 | 179 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \ |
| 4c0a9a6f JW |
180 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC \ |
| 181 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1 \ | |
| 6ffe9a1b | 182 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12 \ |
| 40fbed84 | 183 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12 \ |
| 753999c1 | 184 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC \ |
| 73f925cc | 185 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \ |
| f69e4920 | 186 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \ |
| 77a69ff8 | 187 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 \ |
| 07c9aa07 JW |
188 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12 \ |
| 189 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC \ | |
| 190 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12 \ | |
| 191 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC \ | |
| 192 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12 \ | |
| 193 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC \ | |
| 194 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12 \ | |
| 195 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC \ | |
| 6ffe9a1b JW |
196 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0 \ |
| 197 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC \ | |
| 198 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1 \ | |
| 199 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC \ | |
| 200 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2 \ | |
| a6bb11b2 | 201 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 \ |
| 4c0a9a6f | 202 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12 \ |
| a6bb11b2 | 203 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC \ |
| e04ef022 RL |
204 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12 \ |
| 205 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC \ | |
| 206 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12 \ | |
| 207 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC \ | |
| 208 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12 \ | |
| 209 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC \ | |
| 210 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12 \ | |
| 211 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC \ | |
| a6bb11b2 YZ |
212 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0 \ |
| 213 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC \ | |
| 4c0a9a6f JW |
214 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 \ |
| 215 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC \ | |
| 216 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 \ | |
| a6bb11b2 YZ |
217 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPMOD \ |
| 218 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPREL \ | |
| 219 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_TPREL \ | |
| a06ea964 NC |
220 | || IS_AARCH64_TLSDESC_RELOC ((R_TYPE))) |
| 221 | ||
| 9331eea1 | 222 | #define IS_AARCH64_TLS_RELAX_RELOC(R_TYPE) \ |
| f955cccf NC |
223 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \ |
| 224 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12 \ | |
| 4af68b9c JW |
225 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \ |
| 226 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \ | |
| 227 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \ | |
| 228 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \ | |
| 229 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC \ | |
| 0484b454 RL |
230 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \ |
| 231 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \ | |
| 232 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1 \ | |
| 233 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \ | |
| 4af68b9c | 234 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \ |
| 9331eea1 JW |
235 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \ |
| 236 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \ | |
| ac734732 RL |
237 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \ |
| 238 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \ | |
| 9331eea1 JW |
239 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \ |
| 240 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \ | |
| 241 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC \ | |
| 259364ad JW |
242 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \ |
| 243 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \ | |
| 4af68b9c | 244 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21) |
| 9331eea1 | 245 | |
| a6bb11b2 | 246 | #define IS_AARCH64_TLSDESC_RELOC(R_TYPE) \ |
| 4c0a9a6f JW |
247 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC \ |
| 248 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \ | |
| f955cccf | 249 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12 \ |
| a6bb11b2 | 250 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \ |
| 389b8029 | 251 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \ |
| 4c0a9a6f | 252 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \ |
| a6bb11b2 | 253 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC \ |
| f955cccf | 254 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD64_LO12 \ |
| a6bb11b2 | 255 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \ |
| 4c0a9a6f JW |
256 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \ |
| 257 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \ | |
| 258 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1) | |
| a06ea964 | 259 | |
| 6353d82b | 260 | #define ELIMINATE_COPY_RELOCS 1 |
| a06ea964 | 261 | |
| a06ea964 | 262 | /* Return size of a relocation entry. HTAB is the bfd's |
| cec5225b YZ |
263 | elf_aarch64_link_hash_entry. */ |
| 264 | #define RELOC_SIZE(HTAB) (sizeof (ElfNN_External_Rela)) | |
| a06ea964 | 265 | |
| cec5225b | 266 | /* GOT Entry size - 8 bytes in ELF64 and 4 bytes in ELF32. */ |
| 07d6d2b8 AM |
267 | #define GOT_ENTRY_SIZE (ARCH_SIZE / 8) |
| 268 | #define PLT_ENTRY_SIZE (32) | |
| 269 | #define PLT_SMALL_ENTRY_SIZE (16) | |
| 270 | #define PLT_TLSDESC_ENTRY_SIZE (32) | |
| 37c18eed | 271 | /* PLT sizes with BTI insn. */ |
| 68bb0359 | 272 | #define PLT_BTI_SMALL_ENTRY_SIZE (24) |
| 1dbade74 | 273 | /* PLT sizes with PAC insn. */ |
| 68bb0359 | 274 | #define PLT_PAC_SMALL_ENTRY_SIZE (24) |
| 1dbade74 | 275 | /* PLT sizes with BTI and PAC insn. */ |
| 1dbade74 | 276 | #define PLT_BTI_PAC_SMALL_ENTRY_SIZE (24) |
| a06ea964 | 277 | |
| 2d0ca824 | 278 | /* Encoding of the nop instruction. */ |
| a06ea964 NC |
279 | #define INSN_NOP 0xd503201f |
| 280 | ||
| 281 | #define aarch64_compute_jump_table_size(htab) \ | |
| 282 | (((htab)->root.srelplt == NULL) ? 0 \ | |
| 283 | : (htab)->root.srelplt->reloc_count * GOT_ENTRY_SIZE) | |
| 284 | ||
| 285 | /* The first entry in a procedure linkage table looks like this | |
| 286 | if the distance between the PLTGOT and the PLT is < 4GB use | |
| 287 | these PLT entries. Note that the dynamic linker gets &PLTGOT[2] | |
| 288 | in x16 and needs to work out PLTGOT[1] by using an address of | |
| cec5225b YZ |
289 | [x16,#-GOT_ENTRY_SIZE]. */ |
| 290 | static const bfd_byte elfNN_aarch64_small_plt0_entry[PLT_ENTRY_SIZE] = | |
| a06ea964 NC |
291 | { |
| 292 | 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */ | |
| 293 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */ | |
| caed7120 | 294 | #if ARCH_SIZE == 64 |
| a06ea964 NC |
295 | 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */ |
| 296 | 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */ | |
| caed7120 YZ |
297 | #else |
| 298 | 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */ | |
| 299 | 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */ | |
| 300 | #endif | |
| a06ea964 NC |
301 | 0x20, 0x02, 0x1f, 0xd6, /* br x17 */ |
| 302 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
| 303 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
| 304 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
| 305 | }; | |
| 306 | ||
| 68bb0359 | 307 | static const bfd_byte elfNN_aarch64_small_plt0_bti_entry[PLT_ENTRY_SIZE] = |
| 37c18eed SD |
308 | { |
| 309 | 0x5f, 0x24, 0x03, 0xd5, /* bti c. */ | |
| 310 | 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */ | |
| 311 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */ | |
| 312 | #if ARCH_SIZE == 64 | |
| 313 | 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */ | |
| 314 | 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */ | |
| 315 | #else | |
| 316 | 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */ | |
| 317 | 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */ | |
| 318 | #endif | |
| 319 | 0x20, 0x02, 0x1f, 0xd6, /* br x17 */ | |
| 320 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
| 321 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
| 1dbade74 SD |
322 | }; |
| 323 | ||
| a06ea964 NC |
324 | /* Per function entry in a procedure linkage table looks like this |
| 325 | if the distance between the PLTGOT and the PLT is < 4GB use | |
| 37c18eed | 326 | these PLT entries. Use BTI versions of the PLTs when enabled. */ |
| cec5225b | 327 | static const bfd_byte elfNN_aarch64_small_plt_entry[PLT_SMALL_ENTRY_SIZE] = |
| a06ea964 NC |
328 | { |
| 329 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
| caed7120 | 330 | #if ARCH_SIZE == 64 |
| a06ea964 NC |
331 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ |
| 332 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
| caed7120 YZ |
333 | #else |
| 334 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
| 335 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
| 336 | #endif | |
| a06ea964 NC |
337 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ |
| 338 | }; | |
| 339 | ||
| 37c18eed SD |
340 | static const bfd_byte |
| 341 | elfNN_aarch64_small_plt_bti_entry[PLT_BTI_SMALL_ENTRY_SIZE] = | |
| 342 | { | |
| 343 | 0x5f, 0x24, 0x03, 0xd5, /* bti c. */ | |
| 344 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
| 345 | #if ARCH_SIZE == 64 | |
| 346 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ | |
| 347 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
| 348 | #else | |
| 349 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
| 350 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
| 351 | #endif | |
| 352 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ | |
| 68bb0359 | 353 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ |
| 37c18eed SD |
354 | }; |
| 355 | ||
| 1dbade74 SD |
356 | static const bfd_byte |
| 357 | elfNN_aarch64_small_plt_pac_entry[PLT_PAC_SMALL_ENTRY_SIZE] = | |
| 358 | { | |
| 359 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
| 360 | #if ARCH_SIZE == 64 | |
| 361 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ | |
| 362 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
| 363 | #else | |
| 364 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
| 365 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
| 366 | #endif | |
| 367 | 0x9f, 0x21, 0x03, 0xd5, /* autia1716 */ | |
| 368 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ | |
| 68bb0359 | 369 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ |
| 1dbade74 SD |
370 | }; |
| 371 | ||
| 372 | static const bfd_byte | |
| 373 | elfNN_aarch64_small_plt_bti_pac_entry[PLT_BTI_PAC_SMALL_ENTRY_SIZE] = | |
| 374 | { | |
| 375 | 0x5f, 0x24, 0x03, 0xd5, /* bti c. */ | |
| 376 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
| 377 | #if ARCH_SIZE == 64 | |
| 378 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ | |
| 379 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
| 380 | #else | |
| 381 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
| 382 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
| 383 | #endif | |
| 384 | 0x9f, 0x21, 0x03, 0xd5, /* autia1716 */ | |
| 385 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ | |
| 386 | }; | |
| 387 | ||
| a06ea964 | 388 | static const bfd_byte |
| cec5225b | 389 | elfNN_aarch64_tlsdesc_small_plt_entry[PLT_TLSDESC_ENTRY_SIZE] = |
| a06ea964 NC |
390 | { |
| 391 | 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */ | |
| 392 | 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */ | |
| 393 | 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */ | |
| caed7120 YZ |
394 | #if ARCH_SIZE == 64 |
| 395 | 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */ | |
| a06ea964 | 396 | 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */ |
| caed7120 YZ |
397 | #else |
| 398 | 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */ | |
| 399 | 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */ | |
| 400 | #endif | |
| 401 | 0x40, 0x00, 0x1f, 0xd6, /* br x2 */ | |
| a06ea964 NC |
402 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ |
| 403 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
| 404 | }; | |
| 405 | ||
| 37c18eed | 406 | static const bfd_byte |
| 68bb0359 | 407 | elfNN_aarch64_tlsdesc_small_plt_bti_entry[PLT_TLSDESC_ENTRY_SIZE] = |
| 37c18eed SD |
408 | { |
| 409 | 0x5f, 0x24, 0x03, 0xd5, /* bti c. */ | |
| 410 | 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */ | |
| 411 | 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */ | |
| 412 | 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */ | |
| 413 | #if ARCH_SIZE == 64 | |
| 414 | 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */ | |
| 415 | 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */ | |
| 416 | #else | |
| 417 | 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */ | |
| 418 | 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */ | |
| 419 | #endif | |
| 420 | 0x40, 0x00, 0x1f, 0xd6, /* br x2 */ | |
| 421 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
| 37c18eed SD |
422 | }; |
| 423 | ||
| 07d6d2b8 AM |
424 | #define elf_info_to_howto elfNN_aarch64_info_to_howto |
| 425 | #define elf_info_to_howto_rel elfNN_aarch64_info_to_howto | |
| a06ea964 NC |
426 | |
| 427 | #define AARCH64_ELF_ABI_VERSION 0 | |
| a06ea964 NC |
428 | |
| 429 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ | |
| 430 | #define ALL_ONES (~ (bfd_vma) 0) | |
| 431 | ||
| a6bb11b2 YZ |
432 | /* Indexed by the bfd interal reloc enumerators. |
| 433 | Therefore, the table needs to be synced with BFD_RELOC_AARCH64_* | |
| 434 | in reloc.c. */ | |
| a06ea964 | 435 | |
| a6bb11b2 | 436 | static reloc_howto_type elfNN_aarch64_howto_table[] = |
| a06ea964 | 437 | { |
| a6bb11b2 | 438 | EMPTY_HOWTO (0), |
| a06ea964 | 439 | |
| a6bb11b2 | 440 | /* Basic data relocations. */ |
| a06ea964 | 441 | |
| b7f28d87 JW |
442 | /* Deprecated, but retained for backwards compatibility. */ |
| 443 | HOWTO64 (R_AARCH64_NULL, /* type */ | |
| a06ea964 | 444 | 0, /* rightshift */ |
| c94cb026 | 445 | 0, /* size */ |
| a6bb11b2 | 446 | 0, /* bitsize */ |
| 0a1b45a2 | 447 | false, /* pc_relative */ |
| a06ea964 NC |
448 | 0, /* bitpos */ |
| 449 | complain_overflow_dont, /* complain_on_overflow */ | |
| 450 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 451 | "R_AARCH64_NULL", /* name */ |
| 0a1b45a2 | 452 | false, /* partial_inplace */ |
| a06ea964 | 453 | 0, /* src_mask */ |
| a6bb11b2 | 454 | 0, /* dst_mask */ |
| 0a1b45a2 | 455 | false), /* pcrel_offset */ |
| a6bb11b2 | 456 | HOWTO (R_AARCH64_NONE, /* type */ |
| a06ea964 | 457 | 0, /* rightshift */ |
| c94cb026 | 458 | 0, /* size */ |
| a06ea964 | 459 | 0, /* bitsize */ |
| 0a1b45a2 | 460 | false, /* pc_relative */ |
| a06ea964 NC |
461 | 0, /* bitpos */ |
| 462 | complain_overflow_dont, /* complain_on_overflow */ | |
| 463 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 464 | "R_AARCH64_NONE", /* name */ |
| 0a1b45a2 | 465 | false, /* partial_inplace */ |
| a06ea964 NC |
466 | 0, /* src_mask */ |
| 467 | 0, /* dst_mask */ | |
| 0a1b45a2 | 468 | false), /* pcrel_offset */ |
| a06ea964 NC |
469 | |
| 470 | /* .xword: (S+A) */ | |
| a6bb11b2 | 471 | HOWTO64 (AARCH64_R (ABS64), /* type */ |
| a06ea964 | 472 | 0, /* rightshift */ |
| c94cb026 | 473 | 8, /* size */ |
| a06ea964 | 474 | 64, /* bitsize */ |
| 0a1b45a2 | 475 | false, /* pc_relative */ |
| a06ea964 NC |
476 | 0, /* bitpos */ |
| 477 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 478 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 479 | AARCH64_R_STR (ABS64), /* name */ |
| 0a1b45a2 | 480 | false, /* partial_inplace */ |
| a06ea964 NC |
481 | ALL_ONES, /* src_mask */ |
| 482 | ALL_ONES, /* dst_mask */ | |
| 0a1b45a2 | 483 | false), /* pcrel_offset */ |
| a06ea964 NC |
484 | |
| 485 | /* .word: (S+A) */ | |
| a6bb11b2 | 486 | HOWTO (AARCH64_R (ABS32), /* type */ |
| a06ea964 | 487 | 0, /* rightshift */ |
| c94cb026 | 488 | 4, /* size */ |
| a06ea964 | 489 | 32, /* bitsize */ |
| 0a1b45a2 | 490 | false, /* pc_relative */ |
| a06ea964 NC |
491 | 0, /* bitpos */ |
| 492 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 493 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 494 | AARCH64_R_STR (ABS32), /* name */ |
| 0a1b45a2 | 495 | false, /* partial_inplace */ |
| a06ea964 NC |
496 | 0xffffffff, /* src_mask */ |
| 497 | 0xffffffff, /* dst_mask */ | |
| 0a1b45a2 | 498 | false), /* pcrel_offset */ |
| a06ea964 NC |
499 | |
| 500 | /* .half: (S+A) */ | |
| a6bb11b2 | 501 | HOWTO (AARCH64_R (ABS16), /* type */ |
| a06ea964 | 502 | 0, /* rightshift */ |
| c94cb026 | 503 | 2, /* size */ |
| a06ea964 | 504 | 16, /* bitsize */ |
| 0a1b45a2 | 505 | false, /* pc_relative */ |
| a06ea964 NC |
506 | 0, /* bitpos */ |
| 507 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 508 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 509 | AARCH64_R_STR (ABS16), /* name */ |
| 0a1b45a2 | 510 | false, /* partial_inplace */ |
| a06ea964 NC |
511 | 0xffff, /* src_mask */ |
| 512 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 513 | false), /* pcrel_offset */ |
| a06ea964 NC |
514 | |
| 515 | /* .xword: (S+A-P) */ | |
| a6bb11b2 | 516 | HOWTO64 (AARCH64_R (PREL64), /* type */ |
| a06ea964 | 517 | 0, /* rightshift */ |
| c94cb026 | 518 | 8, /* size */ |
| a06ea964 | 519 | 64, /* bitsize */ |
| 0a1b45a2 | 520 | true, /* pc_relative */ |
| a06ea964 NC |
521 | 0, /* bitpos */ |
| 522 | complain_overflow_signed, /* complain_on_overflow */ | |
| 523 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 524 | AARCH64_R_STR (PREL64), /* name */ |
| 0a1b45a2 | 525 | false, /* partial_inplace */ |
| a06ea964 NC |
526 | ALL_ONES, /* src_mask */ |
| 527 | ALL_ONES, /* dst_mask */ | |
| 0a1b45a2 | 528 | true), /* pcrel_offset */ |
| a06ea964 NC |
529 | |
| 530 | /* .word: (S+A-P) */ | |
| a6bb11b2 | 531 | HOWTO (AARCH64_R (PREL32), /* type */ |
| a06ea964 | 532 | 0, /* rightshift */ |
| c94cb026 | 533 | 4, /* size */ |
| a06ea964 | 534 | 32, /* bitsize */ |
| 0a1b45a2 | 535 | true, /* pc_relative */ |
| a06ea964 NC |
536 | 0, /* bitpos */ |
| 537 | complain_overflow_signed, /* complain_on_overflow */ | |
| 538 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 539 | AARCH64_R_STR (PREL32), /* name */ |
| 0a1b45a2 | 540 | false, /* partial_inplace */ |
| a06ea964 NC |
541 | 0xffffffff, /* src_mask */ |
| 542 | 0xffffffff, /* dst_mask */ | |
| 0a1b45a2 | 543 | true), /* pcrel_offset */ |
| a06ea964 NC |
544 | |
| 545 | /* .half: (S+A-P) */ | |
| a6bb11b2 | 546 | HOWTO (AARCH64_R (PREL16), /* type */ |
| a06ea964 | 547 | 0, /* rightshift */ |
| c94cb026 | 548 | 2, /* size */ |
| a06ea964 | 549 | 16, /* bitsize */ |
| 0a1b45a2 | 550 | true, /* pc_relative */ |
| a06ea964 NC |
551 | 0, /* bitpos */ |
| 552 | complain_overflow_signed, /* complain_on_overflow */ | |
| 553 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 554 | AARCH64_R_STR (PREL16), /* name */ |
| 0a1b45a2 | 555 | false, /* partial_inplace */ |
| a06ea964 NC |
556 | 0xffff, /* src_mask */ |
| 557 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 558 | true), /* pcrel_offset */ |
| a06ea964 NC |
559 | |
| 560 | /* Group relocations to create a 16, 32, 48 or 64 bit | |
| 561 | unsigned data or abs address inline. */ | |
| 562 | ||
| 563 | /* MOVZ: ((S+A) >> 0) & 0xffff */ | |
| a6bb11b2 | 564 | HOWTO (AARCH64_R (MOVW_UABS_G0), /* type */ |
| a06ea964 | 565 | 0, /* rightshift */ |
| c94cb026 | 566 | 4, /* size */ |
| a06ea964 | 567 | 16, /* bitsize */ |
| 0a1b45a2 | 568 | false, /* pc_relative */ |
| a06ea964 NC |
569 | 0, /* bitpos */ |
| 570 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 571 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 572 | AARCH64_R_STR (MOVW_UABS_G0), /* name */ |
| 0a1b45a2 | 573 | false, /* partial_inplace */ |
| a06ea964 NC |
574 | 0xffff, /* src_mask */ |
| 575 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 576 | false), /* pcrel_offset */ |
| a06ea964 NC |
577 | |
| 578 | /* MOVK: ((S+A) >> 0) & 0xffff [no overflow check] */ | |
| a6bb11b2 | 579 | HOWTO (AARCH64_R (MOVW_UABS_G0_NC), /* type */ |
| a06ea964 | 580 | 0, /* rightshift */ |
| c94cb026 | 581 | 4, /* size */ |
| a06ea964 | 582 | 16, /* bitsize */ |
| 0a1b45a2 | 583 | false, /* pc_relative */ |
| a06ea964 NC |
584 | 0, /* bitpos */ |
| 585 | complain_overflow_dont, /* complain_on_overflow */ | |
| 586 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 587 | AARCH64_R_STR (MOVW_UABS_G0_NC), /* name */ |
| 0a1b45a2 | 588 | false, /* partial_inplace */ |
| a06ea964 NC |
589 | 0xffff, /* src_mask */ |
| 590 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 591 | false), /* pcrel_offset */ |
| a06ea964 NC |
592 | |
| 593 | /* MOVZ: ((S+A) >> 16) & 0xffff */ | |
| a6bb11b2 | 594 | HOWTO (AARCH64_R (MOVW_UABS_G1), /* type */ |
| a06ea964 | 595 | 16, /* rightshift */ |
| c94cb026 | 596 | 4, /* size */ |
| a06ea964 | 597 | 16, /* bitsize */ |
| 0a1b45a2 | 598 | false, /* pc_relative */ |
| a06ea964 NC |
599 | 0, /* bitpos */ |
| 600 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 601 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 602 | AARCH64_R_STR (MOVW_UABS_G1), /* name */ |
| 0a1b45a2 | 603 | false, /* partial_inplace */ |
| a06ea964 NC |
604 | 0xffff, /* src_mask */ |
| 605 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 606 | false), /* pcrel_offset */ |
| a06ea964 NC |
607 | |
| 608 | /* MOVK: ((S+A) >> 16) & 0xffff [no overflow check] */ | |
| a6bb11b2 | 609 | HOWTO64 (AARCH64_R (MOVW_UABS_G1_NC), /* type */ |
| a06ea964 | 610 | 16, /* rightshift */ |
| c94cb026 | 611 | 4, /* size */ |
| a06ea964 | 612 | 16, /* bitsize */ |
| 0a1b45a2 | 613 | false, /* pc_relative */ |
| a06ea964 NC |
614 | 0, /* bitpos */ |
| 615 | complain_overflow_dont, /* complain_on_overflow */ | |
| 616 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 617 | AARCH64_R_STR (MOVW_UABS_G1_NC), /* name */ |
| 0a1b45a2 | 618 | false, /* partial_inplace */ |
| a06ea964 NC |
619 | 0xffff, /* src_mask */ |
| 620 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 621 | false), /* pcrel_offset */ |
| a06ea964 NC |
622 | |
| 623 | /* MOVZ: ((S+A) >> 32) & 0xffff */ | |
| a6bb11b2 | 624 | HOWTO64 (AARCH64_R (MOVW_UABS_G2), /* type */ |
| a06ea964 | 625 | 32, /* rightshift */ |
| c94cb026 | 626 | 4, /* size */ |
| a06ea964 | 627 | 16, /* bitsize */ |
| 0a1b45a2 | 628 | false, /* pc_relative */ |
| a06ea964 NC |
629 | 0, /* bitpos */ |
| 630 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 631 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 632 | AARCH64_R_STR (MOVW_UABS_G2), /* name */ |
| 0a1b45a2 | 633 | false, /* partial_inplace */ |
| a06ea964 NC |
634 | 0xffff, /* src_mask */ |
| 635 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 636 | false), /* pcrel_offset */ |
| a06ea964 NC |
637 | |
| 638 | /* MOVK: ((S+A) >> 32) & 0xffff [no overflow check] */ | |
| a6bb11b2 | 639 | HOWTO64 (AARCH64_R (MOVW_UABS_G2_NC), /* type */ |
| a06ea964 | 640 | 32, /* rightshift */ |
| c94cb026 | 641 | 4, /* size */ |
| a06ea964 | 642 | 16, /* bitsize */ |
| 0a1b45a2 | 643 | false, /* pc_relative */ |
| a06ea964 NC |
644 | 0, /* bitpos */ |
| 645 | complain_overflow_dont, /* complain_on_overflow */ | |
| 646 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 647 | AARCH64_R_STR (MOVW_UABS_G2_NC), /* name */ |
| 0a1b45a2 | 648 | false, /* partial_inplace */ |
| a06ea964 NC |
649 | 0xffff, /* src_mask */ |
| 650 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 651 | false), /* pcrel_offset */ |
| a06ea964 NC |
652 | |
| 653 | /* MOVZ: ((S+A) >> 48) & 0xffff */ | |
| a6bb11b2 | 654 | HOWTO64 (AARCH64_R (MOVW_UABS_G3), /* type */ |
| a06ea964 | 655 | 48, /* rightshift */ |
| c94cb026 | 656 | 4, /* size */ |
| a06ea964 | 657 | 16, /* bitsize */ |
| 0a1b45a2 | 658 | false, /* pc_relative */ |
| a06ea964 NC |
659 | 0, /* bitpos */ |
| 660 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 661 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 662 | AARCH64_R_STR (MOVW_UABS_G3), /* name */ |
| 0a1b45a2 | 663 | false, /* partial_inplace */ |
| a06ea964 NC |
664 | 0xffff, /* src_mask */ |
| 665 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 666 | false), /* pcrel_offset */ |
| a06ea964 NC |
667 | |
| 668 | /* Group relocations to create high part of a 16, 32, 48 or 64 bit | |
| 669 | signed data or abs address inline. Will change instruction | |
| 670 | to MOVN or MOVZ depending on sign of calculated value. */ | |
| 671 | ||
| 672 | /* MOV[ZN]: ((S+A) >> 0) & 0xffff */ | |
| a6bb11b2 | 673 | HOWTO (AARCH64_R (MOVW_SABS_G0), /* type */ |
| a06ea964 | 674 | 0, /* rightshift */ |
| c94cb026 | 675 | 4, /* size */ |
| c5e3a364 | 676 | 17, /* bitsize */ |
| 0a1b45a2 | 677 | false, /* pc_relative */ |
| a06ea964 NC |
678 | 0, /* bitpos */ |
| 679 | complain_overflow_signed, /* complain_on_overflow */ | |
| 680 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 681 | AARCH64_R_STR (MOVW_SABS_G0), /* name */ |
| 0a1b45a2 | 682 | false, /* partial_inplace */ |
| a06ea964 NC |
683 | 0xffff, /* src_mask */ |
| 684 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 685 | false), /* pcrel_offset */ |
| a06ea964 NC |
686 | |
| 687 | /* MOV[ZN]: ((S+A) >> 16) & 0xffff */ | |
| a6bb11b2 | 688 | HOWTO64 (AARCH64_R (MOVW_SABS_G1), /* type */ |
| a06ea964 | 689 | 16, /* rightshift */ |
| c94cb026 | 690 | 4, /* size */ |
| c5e3a364 | 691 | 17, /* bitsize */ |
| 0a1b45a2 | 692 | false, /* pc_relative */ |
| a06ea964 NC |
693 | 0, /* bitpos */ |
| 694 | complain_overflow_signed, /* complain_on_overflow */ | |
| 695 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 696 | AARCH64_R_STR (MOVW_SABS_G1), /* name */ |
| 0a1b45a2 | 697 | false, /* partial_inplace */ |
| a06ea964 NC |
698 | 0xffff, /* src_mask */ |
| 699 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 700 | false), /* pcrel_offset */ |
| a06ea964 NC |
701 | |
| 702 | /* MOV[ZN]: ((S+A) >> 32) & 0xffff */ | |
| a6bb11b2 | 703 | HOWTO64 (AARCH64_R (MOVW_SABS_G2), /* type */ |
| a06ea964 | 704 | 32, /* rightshift */ |
| c94cb026 | 705 | 4, /* size */ |
| c5e3a364 | 706 | 17, /* bitsize */ |
| 0a1b45a2 | 707 | false, /* pc_relative */ |
| a06ea964 NC |
708 | 0, /* bitpos */ |
| 709 | complain_overflow_signed, /* complain_on_overflow */ | |
| 710 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 711 | AARCH64_R_STR (MOVW_SABS_G2), /* name */ |
| 0a1b45a2 | 712 | false, /* partial_inplace */ |
| a06ea964 NC |
713 | 0xffff, /* src_mask */ |
| 714 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 715 | false), /* pcrel_offset */ |
| a06ea964 | 716 | |
| 32247401 RL |
717 | /* Group relocations to create a 16, 32, 48 or 64 bit |
| 718 | PC relative address inline. */ | |
| 719 | ||
| 720 | /* MOV[NZ]: ((S+A-P) >> 0) & 0xffff */ | |
| e30d1fa1 | 721 | HOWTO (AARCH64_R (MOVW_PREL_G0), /* type */ |
| 32247401 | 722 | 0, /* rightshift */ |
| c94cb026 | 723 | 4, /* size */ |
| 32247401 | 724 | 17, /* bitsize */ |
| 0a1b45a2 | 725 | true, /* pc_relative */ |
| 32247401 RL |
726 | 0, /* bitpos */ |
| 727 | complain_overflow_signed, /* complain_on_overflow */ | |
| 728 | bfd_elf_generic_reloc, /* special_function */ | |
| 729 | AARCH64_R_STR (MOVW_PREL_G0), /* name */ | |
| 0a1b45a2 | 730 | false, /* partial_inplace */ |
| 32247401 RL |
731 | 0xffff, /* src_mask */ |
| 732 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 733 | true), /* pcrel_offset */ |
| 32247401 RL |
734 | |
| 735 | /* MOVK: ((S+A-P) >> 0) & 0xffff [no overflow check] */ | |
| e30d1fa1 | 736 | HOWTO (AARCH64_R (MOVW_PREL_G0_NC), /* type */ |
| 32247401 | 737 | 0, /* rightshift */ |
| c94cb026 | 738 | 4, /* size */ |
| 32247401 | 739 | 16, /* bitsize */ |
| 0a1b45a2 | 740 | true, /* pc_relative */ |
| 32247401 RL |
741 | 0, /* bitpos */ |
| 742 | complain_overflow_dont, /* complain_on_overflow */ | |
| 743 | bfd_elf_generic_reloc, /* special_function */ | |
| 744 | AARCH64_R_STR (MOVW_PREL_G0_NC), /* name */ | |
| 0a1b45a2 | 745 | false, /* partial_inplace */ |
| 32247401 RL |
746 | 0xffff, /* src_mask */ |
| 747 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 748 | true), /* pcrel_offset */ |
| 32247401 RL |
749 | |
| 750 | /* MOV[NZ]: ((S+A-P) >> 16) & 0xffff */ | |
| e30d1fa1 | 751 | HOWTO (AARCH64_R (MOVW_PREL_G1), /* type */ |
| 32247401 | 752 | 16, /* rightshift */ |
| c94cb026 | 753 | 4, /* size */ |
| 32247401 | 754 | 17, /* bitsize */ |
| 0a1b45a2 | 755 | true, /* pc_relative */ |
| 32247401 RL |
756 | 0, /* bitpos */ |
| 757 | complain_overflow_signed, /* complain_on_overflow */ | |
| 758 | bfd_elf_generic_reloc, /* special_function */ | |
| 759 | AARCH64_R_STR (MOVW_PREL_G1), /* name */ | |
| 0a1b45a2 | 760 | false, /* partial_inplace */ |
| 32247401 RL |
761 | 0xffff, /* src_mask */ |
| 762 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 763 | true), /* pcrel_offset */ |
| 32247401 RL |
764 | |
| 765 | /* MOVK: ((S+A-P) >> 16) & 0xffff [no overflow check] */ | |
| 766 | HOWTO64 (AARCH64_R (MOVW_PREL_G1_NC), /* type */ | |
| 767 | 16, /* rightshift */ | |
| c94cb026 | 768 | 4, /* size */ |
| 32247401 | 769 | 16, /* bitsize */ |
| 0a1b45a2 | 770 | true, /* pc_relative */ |
| 32247401 RL |
771 | 0, /* bitpos */ |
| 772 | complain_overflow_dont, /* complain_on_overflow */ | |
| 773 | bfd_elf_generic_reloc, /* special_function */ | |
| 774 | AARCH64_R_STR (MOVW_PREL_G1_NC), /* name */ | |
| 0a1b45a2 | 775 | false, /* partial_inplace */ |
| 32247401 RL |
776 | 0xffff, /* src_mask */ |
| 777 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 778 | true), /* pcrel_offset */ |
| 32247401 RL |
779 | |
| 780 | /* MOV[NZ]: ((S+A-P) >> 32) & 0xffff */ | |
| 781 | HOWTO64 (AARCH64_R (MOVW_PREL_G2), /* type */ | |
| 782 | 32, /* rightshift */ | |
| c94cb026 | 783 | 4, /* size */ |
| 32247401 | 784 | 17, /* bitsize */ |
| 0a1b45a2 | 785 | true, /* pc_relative */ |
| 32247401 RL |
786 | 0, /* bitpos */ |
| 787 | complain_overflow_signed, /* complain_on_overflow */ | |
| 788 | bfd_elf_generic_reloc, /* special_function */ | |
| 789 | AARCH64_R_STR (MOVW_PREL_G2), /* name */ | |
| 0a1b45a2 | 790 | false, /* partial_inplace */ |
| 32247401 RL |
791 | 0xffff, /* src_mask */ |
| 792 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 793 | true), /* pcrel_offset */ |
| 32247401 RL |
794 | |
| 795 | /* MOVK: ((S+A-P) >> 32) & 0xffff [no overflow check] */ | |
| 796 | HOWTO64 (AARCH64_R (MOVW_PREL_G2_NC), /* type */ | |
| 797 | 32, /* rightshift */ | |
| c94cb026 | 798 | 4, /* size */ |
| 32247401 | 799 | 16, /* bitsize */ |
| 0a1b45a2 | 800 | true, /* pc_relative */ |
| 32247401 RL |
801 | 0, /* bitpos */ |
| 802 | complain_overflow_dont, /* complain_on_overflow */ | |
| 803 | bfd_elf_generic_reloc, /* special_function */ | |
| 804 | AARCH64_R_STR (MOVW_PREL_G2_NC), /* name */ | |
| 0a1b45a2 | 805 | false, /* partial_inplace */ |
| 32247401 RL |
806 | 0xffff, /* src_mask */ |
| 807 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 808 | true), /* pcrel_offset */ |
| 32247401 RL |
809 | |
| 810 | /* MOV[NZ]: ((S+A-P) >> 48) & 0xffff */ | |
| 811 | HOWTO64 (AARCH64_R (MOVW_PREL_G3), /* type */ | |
| 812 | 48, /* rightshift */ | |
| c94cb026 | 813 | 4, /* size */ |
| 32247401 | 814 | 16, /* bitsize */ |
| 0a1b45a2 | 815 | true, /* pc_relative */ |
| 32247401 RL |
816 | 0, /* bitpos */ |
| 817 | complain_overflow_dont, /* complain_on_overflow */ | |
| 818 | bfd_elf_generic_reloc, /* special_function */ | |
| 819 | AARCH64_R_STR (MOVW_PREL_G3), /* name */ | |
| 0a1b45a2 | 820 | false, /* partial_inplace */ |
| 32247401 RL |
821 | 0xffff, /* src_mask */ |
| 822 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 823 | true), /* pcrel_offset */ |
| 32247401 | 824 | |
| a06ea964 NC |
825 | /* Relocations to generate 19, 21 and 33 bit PC-relative load/store |
| 826 | addresses: PG(x) is (x & ~0xfff). */ | |
| 827 | ||
| 828 | /* LD-lit: ((S+A-P) >> 2) & 0x7ffff */ | |
| a6bb11b2 | 829 | HOWTO (AARCH64_R (LD_PREL_LO19), /* type */ |
| a06ea964 | 830 | 2, /* rightshift */ |
| c94cb026 | 831 | 4, /* size */ |
| a06ea964 | 832 | 19, /* bitsize */ |
| 0a1b45a2 | 833 | true, /* pc_relative */ |
| a06ea964 NC |
834 | 0, /* bitpos */ |
| 835 | complain_overflow_signed, /* complain_on_overflow */ | |
| 836 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 837 | AARCH64_R_STR (LD_PREL_LO19), /* name */ |
| 0a1b45a2 | 838 | false, /* partial_inplace */ |
| a06ea964 NC |
839 | 0x7ffff, /* src_mask */ |
| 840 | 0x7ffff, /* dst_mask */ | |
| 0a1b45a2 | 841 | true), /* pcrel_offset */ |
| a06ea964 NC |
842 | |
| 843 | /* ADR: (S+A-P) & 0x1fffff */ | |
| a6bb11b2 | 844 | HOWTO (AARCH64_R (ADR_PREL_LO21), /* type */ |
| a06ea964 | 845 | 0, /* rightshift */ |
| c94cb026 | 846 | 4, /* size */ |
| a06ea964 | 847 | 21, /* bitsize */ |
| 0a1b45a2 | 848 | true, /* pc_relative */ |
| a06ea964 NC |
849 | 0, /* bitpos */ |
| 850 | complain_overflow_signed, /* complain_on_overflow */ | |
| 851 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 852 | AARCH64_R_STR (ADR_PREL_LO21), /* name */ |
| 0a1b45a2 | 853 | false, /* partial_inplace */ |
| a06ea964 NC |
854 | 0x1fffff, /* src_mask */ |
| 855 | 0x1fffff, /* dst_mask */ | |
| 0a1b45a2 | 856 | true), /* pcrel_offset */ |
| a06ea964 NC |
857 | |
| 858 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
| a6bb11b2 | 859 | HOWTO (AARCH64_R (ADR_PREL_PG_HI21), /* type */ |
| a06ea964 | 860 | 12, /* rightshift */ |
| c94cb026 | 861 | 4, /* size */ |
| a06ea964 | 862 | 21, /* bitsize */ |
| 0a1b45a2 | 863 | true, /* pc_relative */ |
| a06ea964 NC |
864 | 0, /* bitpos */ |
| 865 | complain_overflow_signed, /* complain_on_overflow */ | |
| 866 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 867 | AARCH64_R_STR (ADR_PREL_PG_HI21), /* name */ |
| 0a1b45a2 | 868 | false, /* partial_inplace */ |
| a06ea964 NC |
869 | 0x1fffff, /* src_mask */ |
| 870 | 0x1fffff, /* dst_mask */ | |
| 0a1b45a2 | 871 | true), /* pcrel_offset */ |
| a06ea964 NC |
872 | |
| 873 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff [no overflow check] */ | |
| a6bb11b2 | 874 | HOWTO64 (AARCH64_R (ADR_PREL_PG_HI21_NC), /* type */ |
| a06ea964 | 875 | 12, /* rightshift */ |
| c94cb026 | 876 | 4, /* size */ |
| a06ea964 | 877 | 21, /* bitsize */ |
| 0a1b45a2 | 878 | true, /* pc_relative */ |
| a06ea964 NC |
879 | 0, /* bitpos */ |
| 880 | complain_overflow_dont, /* complain_on_overflow */ | |
| 881 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 882 | AARCH64_R_STR (ADR_PREL_PG_HI21_NC), /* name */ |
| 0a1b45a2 | 883 | false, /* partial_inplace */ |
| a06ea964 NC |
884 | 0x1fffff, /* src_mask */ |
| 885 | 0x1fffff, /* dst_mask */ | |
| 0a1b45a2 | 886 | true), /* pcrel_offset */ |
| a06ea964 NC |
887 | |
| 888 | /* ADD: (S+A) & 0xfff [no overflow check] */ | |
| a6bb11b2 | 889 | HOWTO (AARCH64_R (ADD_ABS_LO12_NC), /* type */ |
| a06ea964 | 890 | 0, /* rightshift */ |
| c94cb026 | 891 | 4, /* size */ |
| a06ea964 | 892 | 12, /* bitsize */ |
| 0a1b45a2 | 893 | false, /* pc_relative */ |
| a06ea964 NC |
894 | 10, /* bitpos */ |
| 895 | complain_overflow_dont, /* complain_on_overflow */ | |
| 896 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 897 | AARCH64_R_STR (ADD_ABS_LO12_NC), /* name */ |
| 0a1b45a2 | 898 | false, /* partial_inplace */ |
| a06ea964 NC |
899 | 0x3ffc00, /* src_mask */ |
| 900 | 0x3ffc00, /* dst_mask */ | |
| 0a1b45a2 | 901 | false), /* pcrel_offset */ |
| a06ea964 NC |
902 | |
| 903 | /* LD/ST8: (S+A) & 0xfff */ | |
| a6bb11b2 | 904 | HOWTO (AARCH64_R (LDST8_ABS_LO12_NC), /* type */ |
| a06ea964 | 905 | 0, /* rightshift */ |
| c94cb026 | 906 | 4, /* size */ |
| a06ea964 | 907 | 12, /* bitsize */ |
| 0a1b45a2 | 908 | false, /* pc_relative */ |
| a06ea964 NC |
909 | 0, /* bitpos */ |
| 910 | complain_overflow_dont, /* complain_on_overflow */ | |
| 911 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 912 | AARCH64_R_STR (LDST8_ABS_LO12_NC), /* name */ |
| 0a1b45a2 | 913 | false, /* partial_inplace */ |
| a06ea964 NC |
914 | 0xfff, /* src_mask */ |
| 915 | 0xfff, /* dst_mask */ | |
| 0a1b45a2 | 916 | false), /* pcrel_offset */ |
| a06ea964 NC |
917 | |
| 918 | /* Relocations for control-flow instructions. */ | |
| 919 | ||
| 920 | /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */ | |
| a6bb11b2 | 921 | HOWTO (AARCH64_R (TSTBR14), /* type */ |
| a06ea964 | 922 | 2, /* rightshift */ |
| c94cb026 | 923 | 4, /* size */ |
| a06ea964 | 924 | 14, /* bitsize */ |
| 0a1b45a2 | 925 | true, /* pc_relative */ |
| a06ea964 NC |
926 | 0, /* bitpos */ |
| 927 | complain_overflow_signed, /* complain_on_overflow */ | |
| 928 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 929 | AARCH64_R_STR (TSTBR14), /* name */ |
| 0a1b45a2 | 930 | false, /* partial_inplace */ |
| a06ea964 NC |
931 | 0x3fff, /* src_mask */ |
| 932 | 0x3fff, /* dst_mask */ | |
| 0a1b45a2 | 933 | true), /* pcrel_offset */ |
| a06ea964 NC |
934 | |
| 935 | /* B.cond: ((S+A-P) >> 2) & 0x7ffff */ | |
| a6bb11b2 | 936 | HOWTO (AARCH64_R (CONDBR19), /* type */ |
| a06ea964 | 937 | 2, /* rightshift */ |
| c94cb026 | 938 | 4, /* size */ |
| a06ea964 | 939 | 19, /* bitsize */ |
| 0a1b45a2 | 940 | true, /* pc_relative */ |
| a06ea964 NC |
941 | 0, /* bitpos */ |
| 942 | complain_overflow_signed, /* complain_on_overflow */ | |
| 943 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 944 | AARCH64_R_STR (CONDBR19), /* name */ |
| 0a1b45a2 | 945 | false, /* partial_inplace */ |
| a06ea964 NC |
946 | 0x7ffff, /* src_mask */ |
| 947 | 0x7ffff, /* dst_mask */ | |
| 0a1b45a2 | 948 | true), /* pcrel_offset */ |
| a06ea964 | 949 | |
| a06ea964 | 950 | /* B: ((S+A-P) >> 2) & 0x3ffffff */ |
| a6bb11b2 | 951 | HOWTO (AARCH64_R (JUMP26), /* type */ |
| a06ea964 | 952 | 2, /* rightshift */ |
| c94cb026 | 953 | 4, /* size */ |
| a06ea964 | 954 | 26, /* bitsize */ |
| 0a1b45a2 | 955 | true, /* pc_relative */ |
| a06ea964 NC |
956 | 0, /* bitpos */ |
| 957 | complain_overflow_signed, /* complain_on_overflow */ | |
| 958 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 959 | AARCH64_R_STR (JUMP26), /* name */ |
| 0a1b45a2 | 960 | false, /* partial_inplace */ |
| a06ea964 NC |
961 | 0x3ffffff, /* src_mask */ |
| 962 | 0x3ffffff, /* dst_mask */ | |
| 0a1b45a2 | 963 | true), /* pcrel_offset */ |
| a06ea964 NC |
964 | |
| 965 | /* BL: ((S+A-P) >> 2) & 0x3ffffff */ | |
| a6bb11b2 | 966 | HOWTO (AARCH64_R (CALL26), /* type */ |
| a06ea964 | 967 | 2, /* rightshift */ |
| c94cb026 | 968 | 4, /* size */ |
| a06ea964 | 969 | 26, /* bitsize */ |
| 0a1b45a2 | 970 | true, /* pc_relative */ |
| a06ea964 NC |
971 | 0, /* bitpos */ |
| 972 | complain_overflow_signed, /* complain_on_overflow */ | |
| 973 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 974 | AARCH64_R_STR (CALL26), /* name */ |
| 0a1b45a2 | 975 | false, /* partial_inplace */ |
| a06ea964 NC |
976 | 0x3ffffff, /* src_mask */ |
| 977 | 0x3ffffff, /* dst_mask */ | |
| 0a1b45a2 | 978 | true), /* pcrel_offset */ |
| a06ea964 NC |
979 | |
| 980 | /* LD/ST16: (S+A) & 0xffe */ | |
| a6bb11b2 | 981 | HOWTO (AARCH64_R (LDST16_ABS_LO12_NC), /* type */ |
| a06ea964 | 982 | 1, /* rightshift */ |
| c94cb026 | 983 | 4, /* size */ |
| a06ea964 | 984 | 12, /* bitsize */ |
| 0a1b45a2 | 985 | false, /* pc_relative */ |
| a06ea964 NC |
986 | 0, /* bitpos */ |
| 987 | complain_overflow_dont, /* complain_on_overflow */ | |
| 988 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 989 | AARCH64_R_STR (LDST16_ABS_LO12_NC), /* name */ |
| 0a1b45a2 | 990 | false, /* partial_inplace */ |
| a06ea964 NC |
991 | 0xffe, /* src_mask */ |
| 992 | 0xffe, /* dst_mask */ | |
| 0a1b45a2 | 993 | false), /* pcrel_offset */ |
| a06ea964 NC |
994 | |
| 995 | /* LD/ST32: (S+A) & 0xffc */ | |
| a6bb11b2 | 996 | HOWTO (AARCH64_R (LDST32_ABS_LO12_NC), /* type */ |
| a06ea964 | 997 | 2, /* rightshift */ |
| c94cb026 | 998 | 4, /* size */ |
| a06ea964 | 999 | 12, /* bitsize */ |
| 0a1b45a2 | 1000 | false, /* pc_relative */ |
| a06ea964 NC |
1001 | 0, /* bitpos */ |
| 1002 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1003 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 1004 | AARCH64_R_STR (LDST32_ABS_LO12_NC), /* name */ |
| 0a1b45a2 | 1005 | false, /* partial_inplace */ |
| a06ea964 NC |
1006 | 0xffc, /* src_mask */ |
| 1007 | 0xffc, /* dst_mask */ | |
| 0a1b45a2 | 1008 | false), /* pcrel_offset */ |
| a06ea964 NC |
1009 | |
| 1010 | /* LD/ST64: (S+A) & 0xff8 */ | |
| a6bb11b2 | 1011 | HOWTO (AARCH64_R (LDST64_ABS_LO12_NC), /* type */ |
| a06ea964 | 1012 | 3, /* rightshift */ |
| c94cb026 | 1013 | 4, /* size */ |
| a06ea964 | 1014 | 12, /* bitsize */ |
| 0a1b45a2 | 1015 | false, /* pc_relative */ |
| a06ea964 NC |
1016 | 0, /* bitpos */ |
| 1017 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1018 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 1019 | AARCH64_R_STR (LDST64_ABS_LO12_NC), /* name */ |
| 0a1b45a2 | 1020 | false, /* partial_inplace */ |
| a06ea964 NC |
1021 | 0xff8, /* src_mask */ |
| 1022 | 0xff8, /* dst_mask */ | |
| 0a1b45a2 | 1023 | false), /* pcrel_offset */ |
| a06ea964 | 1024 | |
| a06ea964 | 1025 | /* LD/ST128: (S+A) & 0xff0 */ |
| a6bb11b2 | 1026 | HOWTO (AARCH64_R (LDST128_ABS_LO12_NC), /* type */ |
| a06ea964 | 1027 | 4, /* rightshift */ |
| c94cb026 | 1028 | 4, /* size */ |
| a06ea964 | 1029 | 12, /* bitsize */ |
| 0a1b45a2 | 1030 | false, /* pc_relative */ |
| a06ea964 NC |
1031 | 0, /* bitpos */ |
| 1032 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1033 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 1034 | AARCH64_R_STR (LDST128_ABS_LO12_NC), /* name */ |
| 0a1b45a2 | 1035 | false, /* partial_inplace */ |
| a06ea964 NC |
1036 | 0xff0, /* src_mask */ |
| 1037 | 0xff0, /* dst_mask */ | |
| 0a1b45a2 | 1038 | false), /* pcrel_offset */ |
| a06ea964 | 1039 | |
| f41aef5f RE |
1040 | /* Set a load-literal immediate field to bits |
| 1041 | 0x1FFFFC of G(S)-P */ | |
| a6bb11b2 | 1042 | HOWTO (AARCH64_R (GOT_LD_PREL19), /* type */ |
| f41aef5f | 1043 | 2, /* rightshift */ |
| c94cb026 | 1044 | 4, /* size */ |
| f41aef5f | 1045 | 19, /* bitsize */ |
| 0a1b45a2 | 1046 | true, /* pc_relative */ |
| f41aef5f RE |
1047 | 0, /* bitpos */ |
| 1048 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1049 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 1050 | AARCH64_R_STR (GOT_LD_PREL19), /* name */ |
| 0a1b45a2 | 1051 | false, /* partial_inplace */ |
| f41aef5f RE |
1052 | 0xffffe0, /* src_mask */ |
| 1053 | 0xffffe0, /* dst_mask */ | |
| 0a1b45a2 | 1054 | true), /* pcrel_offset */ |
| f41aef5f | 1055 | |
| a06ea964 NC |
1056 | /* Get to the page for the GOT entry for the symbol |
| 1057 | (G(S) - P) using an ADRP instruction. */ | |
| a6bb11b2 | 1058 | HOWTO (AARCH64_R (ADR_GOT_PAGE), /* type */ |
| a06ea964 | 1059 | 12, /* rightshift */ |
| c94cb026 | 1060 | 4, /* size */ |
| a06ea964 | 1061 | 21, /* bitsize */ |
| 0a1b45a2 | 1062 | true, /* pc_relative */ |
| a06ea964 NC |
1063 | 0, /* bitpos */ |
| 1064 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1065 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 1066 | AARCH64_R_STR (ADR_GOT_PAGE), /* name */ |
| 0a1b45a2 | 1067 | false, /* partial_inplace */ |
| a06ea964 NC |
1068 | 0x1fffff, /* src_mask */ |
| 1069 | 0x1fffff, /* dst_mask */ | |
| 0a1b45a2 | 1070 | true), /* pcrel_offset */ |
| a06ea964 | 1071 | |
| a6bb11b2 YZ |
1072 | /* LD64: GOT offset G(S) & 0xff8 */ |
| 1073 | HOWTO64 (AARCH64_R (LD64_GOT_LO12_NC), /* type */ | |
| a06ea964 | 1074 | 3, /* rightshift */ |
| c94cb026 | 1075 | 4, /* size */ |
| a06ea964 | 1076 | 12, /* bitsize */ |
| 0a1b45a2 | 1077 | false, /* pc_relative */ |
| a06ea964 NC |
1078 | 0, /* bitpos */ |
| 1079 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1080 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 1081 | AARCH64_R_STR (LD64_GOT_LO12_NC), /* name */ |
| 0a1b45a2 | 1082 | false, /* partial_inplace */ |
| a06ea964 NC |
1083 | 0xff8, /* src_mask */ |
| 1084 | 0xff8, /* dst_mask */ | |
| 0a1b45a2 | 1085 | false), /* pcrel_offset */ |
| a06ea964 | 1086 | |
| a6bb11b2 YZ |
1087 | /* LD32: GOT offset G(S) & 0xffc */ |
| 1088 | HOWTO32 (AARCH64_R (LD32_GOT_LO12_NC), /* type */ | |
| 1089 | 2, /* rightshift */ | |
| c94cb026 | 1090 | 4, /* size */ |
| a6bb11b2 | 1091 | 12, /* bitsize */ |
| 0a1b45a2 | 1092 | false, /* pc_relative */ |
| a6bb11b2 YZ |
1093 | 0, /* bitpos */ |
| 1094 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1095 | bfd_elf_generic_reloc, /* special_function */ | |
| 1096 | AARCH64_R_STR (LD32_GOT_LO12_NC), /* name */ | |
| 0a1b45a2 | 1097 | false, /* partial_inplace */ |
| a6bb11b2 YZ |
1098 | 0xffc, /* src_mask */ |
| 1099 | 0xffc, /* dst_mask */ | |
| 0a1b45a2 | 1100 | false), /* pcrel_offset */ |
| a06ea964 | 1101 | |
| ca632371 RL |
1102 | /* Lower 16 bits of GOT offset for the symbol. */ |
| 1103 | HOWTO64 (AARCH64_R (MOVW_GOTOFF_G0_NC), /* type */ | |
| 1104 | 0, /* rightshift */ | |
| c94cb026 | 1105 | 4, /* size */ |
| ca632371 | 1106 | 16, /* bitsize */ |
| 0a1b45a2 | 1107 | false, /* pc_relative */ |
| ca632371 RL |
1108 | 0, /* bitpos */ |
| 1109 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1110 | bfd_elf_generic_reloc, /* special_function */ | |
| 1111 | AARCH64_R_STR (MOVW_GOTOFF_G0_NC), /* name */ | |
| 0a1b45a2 | 1112 | false, /* partial_inplace */ |
| ca632371 RL |
1113 | 0xffff, /* src_mask */ |
| 1114 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 1115 | false), /* pcrel_offset */ |
| ca632371 | 1116 | |
| 654248e7 RL |
1117 | /* Higher 16 bits of GOT offset for the symbol. */ |
| 1118 | HOWTO64 (AARCH64_R (MOVW_GOTOFF_G1), /* type */ | |
| 1119 | 16, /* rightshift */ | |
| c94cb026 | 1120 | 4, /* size */ |
| 654248e7 | 1121 | 16, /* bitsize */ |
| 0a1b45a2 | 1122 | false, /* pc_relative */ |
| 654248e7 RL |
1123 | 0, /* bitpos */ |
| 1124 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 1125 | bfd_elf_generic_reloc, /* special_function */ | |
| 1126 | AARCH64_R_STR (MOVW_GOTOFF_G1), /* name */ | |
| 0a1b45a2 | 1127 | false, /* partial_inplace */ |
| 654248e7 RL |
1128 | 0xffff, /* src_mask */ |
| 1129 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 1130 | false), /* pcrel_offset */ |
| 654248e7 | 1131 | |
| 87f5fbcc RL |
1132 | /* LD64: GOT offset for the symbol. */ |
| 1133 | HOWTO64 (AARCH64_R (LD64_GOTOFF_LO15), /* type */ | |
| 1134 | 3, /* rightshift */ | |
| c94cb026 | 1135 | 4, /* size */ |
| 87f5fbcc | 1136 | 12, /* bitsize */ |
| 0a1b45a2 | 1137 | false, /* pc_relative */ |
| 87f5fbcc RL |
1138 | 0, /* bitpos */ |
| 1139 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 1140 | bfd_elf_generic_reloc, /* special_function */ | |
| 1141 | AARCH64_R_STR (LD64_GOTOFF_LO15), /* name */ | |
| 0a1b45a2 | 1142 | false, /* partial_inplace */ |
| 87f5fbcc RL |
1143 | 0x7ff8, /* src_mask */ |
| 1144 | 0x7ff8, /* dst_mask */ | |
| 0a1b45a2 | 1145 | false), /* pcrel_offset */ |
| 87f5fbcc | 1146 | |
| 3d715ce4 JW |
1147 | /* LD32: GOT offset to the page address of GOT table. |
| 1148 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x5ffc. */ | |
| 1149 | HOWTO32 (AARCH64_R (LD32_GOTPAGE_LO14), /* type */ | |
| 1150 | 2, /* rightshift */ | |
| c94cb026 | 1151 | 4, /* size */ |
| 3d715ce4 | 1152 | 12, /* bitsize */ |
| 0a1b45a2 | 1153 | false, /* pc_relative */ |
| 3d715ce4 JW |
1154 | 0, /* bitpos */ |
| 1155 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 1156 | bfd_elf_generic_reloc, /* special_function */ | |
| 1157 | AARCH64_R_STR (LD32_GOTPAGE_LO14), /* name */ | |
| 0a1b45a2 | 1158 | false, /* partial_inplace */ |
| 3d715ce4 JW |
1159 | 0x5ffc, /* src_mask */ |
| 1160 | 0x5ffc, /* dst_mask */ | |
| 0a1b45a2 | 1161 | false), /* pcrel_offset */ |
| 3d715ce4 | 1162 | |
| a921b5bd JW |
1163 | /* LD64: GOT offset to the page address of GOT table. |
| 1164 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */ | |
| 1165 | HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15), /* type */ | |
| 1166 | 3, /* rightshift */ | |
| c94cb026 | 1167 | 4, /* size */ |
| a921b5bd | 1168 | 12, /* bitsize */ |
| 0a1b45a2 | 1169 | false, /* pc_relative */ |
| a921b5bd JW |
1170 | 0, /* bitpos */ |
| 1171 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 1172 | bfd_elf_generic_reloc, /* special_function */ | |
| 1173 | AARCH64_R_STR (LD64_GOTPAGE_LO15), /* name */ | |
| 0a1b45a2 | 1174 | false, /* partial_inplace */ |
| a921b5bd JW |
1175 | 0x7ff8, /* src_mask */ |
| 1176 | 0x7ff8, /* dst_mask */ | |
| 0a1b45a2 | 1177 | false), /* pcrel_offset */ |
| a921b5bd | 1178 | |
| a06ea964 NC |
1179 | /* Get to the page for the GOT entry for the symbol |
| 1180 | (G(S) - P) using an ADRP instruction. */ | |
| a6bb11b2 | 1181 | HOWTO (AARCH64_R (TLSGD_ADR_PAGE21), /* type */ |
| a06ea964 | 1182 | 12, /* rightshift */ |
| c94cb026 | 1183 | 4, /* size */ |
| a06ea964 | 1184 | 21, /* bitsize */ |
| 0a1b45a2 | 1185 | true, /* pc_relative */ |
| a06ea964 NC |
1186 | 0, /* bitpos */ |
| 1187 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1188 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 1189 | AARCH64_R_STR (TLSGD_ADR_PAGE21), /* name */ |
| 0a1b45a2 | 1190 | false, /* partial_inplace */ |
| a06ea964 NC |
1191 | 0x1fffff, /* src_mask */ |
| 1192 | 0x1fffff, /* dst_mask */ | |
| 0a1b45a2 | 1193 | true), /* pcrel_offset */ |
| a06ea964 | 1194 | |
| 3c12b054 MS |
1195 | HOWTO (AARCH64_R (TLSGD_ADR_PREL21), /* type */ |
| 1196 | 0, /* rightshift */ | |
| c94cb026 | 1197 | 4, /* size */ |
| 3c12b054 | 1198 | 21, /* bitsize */ |
| 0a1b45a2 | 1199 | true, /* pc_relative */ |
| 3c12b054 MS |
1200 | 0, /* bitpos */ |
| 1201 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1202 | bfd_elf_generic_reloc, /* special_function */ | |
| 1203 | AARCH64_R_STR (TLSGD_ADR_PREL21), /* name */ | |
| 0a1b45a2 | 1204 | false, /* partial_inplace */ |
| 3c12b054 MS |
1205 | 0x1fffff, /* src_mask */ |
| 1206 | 0x1fffff, /* dst_mask */ | |
| 0a1b45a2 | 1207 | true), /* pcrel_offset */ |
| 3c12b054 | 1208 | |
| a06ea964 | 1209 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ |
| a6bb11b2 | 1210 | HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC), /* type */ |
| a06ea964 | 1211 | 0, /* rightshift */ |
| c94cb026 | 1212 | 4, /* size */ |
| a06ea964 | 1213 | 12, /* bitsize */ |
| 0a1b45a2 | 1214 | false, /* pc_relative */ |
| a06ea964 NC |
1215 | 0, /* bitpos */ |
| 1216 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1217 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 1218 | AARCH64_R_STR (TLSGD_ADD_LO12_NC), /* name */ |
| 0a1b45a2 | 1219 | false, /* partial_inplace */ |
| a06ea964 NC |
1220 | 0xfff, /* src_mask */ |
| 1221 | 0xfff, /* dst_mask */ | |
| 0a1b45a2 | 1222 | false), /* pcrel_offset */ |
| a06ea964 | 1223 | |
| 3e8286c0 RL |
1224 | /* Lower 16 bits of GOT offset to tls_index. */ |
| 1225 | HOWTO64 (AARCH64_R (TLSGD_MOVW_G0_NC), /* type */ | |
| 1226 | 0, /* rightshift */ | |
| c94cb026 | 1227 | 4, /* size */ |
| 3e8286c0 | 1228 | 16, /* bitsize */ |
| 0a1b45a2 | 1229 | false, /* pc_relative */ |
| 3e8286c0 RL |
1230 | 0, /* bitpos */ |
| 1231 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1232 | bfd_elf_generic_reloc, /* special_function */ | |
| 1233 | AARCH64_R_STR (TLSGD_MOVW_G0_NC), /* name */ | |
| 0a1b45a2 | 1234 | false, /* partial_inplace */ |
| 3e8286c0 RL |
1235 | 0xffff, /* src_mask */ |
| 1236 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 1237 | false), /* pcrel_offset */ |
| 3e8286c0 | 1238 | |
| 1aa66fb1 RL |
1239 | /* Higher 16 bits of GOT offset to tls_index. */ |
| 1240 | HOWTO64 (AARCH64_R (TLSGD_MOVW_G1), /* type */ | |
| 1241 | 16, /* rightshift */ | |
| c94cb026 | 1242 | 4, /* size */ |
| 1aa66fb1 | 1243 | 16, /* bitsize */ |
| 0a1b45a2 | 1244 | false, /* pc_relative */ |
| 1aa66fb1 RL |
1245 | 0, /* bitpos */ |
| 1246 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 1247 | bfd_elf_generic_reloc, /* special_function */ | |
| 1248 | AARCH64_R_STR (TLSGD_MOVW_G1), /* name */ | |
| 0a1b45a2 | 1249 | false, /* partial_inplace */ |
| 1aa66fb1 RL |
1250 | 0xffff, /* src_mask */ |
| 1251 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 1252 | false), /* pcrel_offset */ |
| 1aa66fb1 | 1253 | |
| a6bb11b2 | 1254 | HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21), /* type */ |
| a06ea964 | 1255 | 12, /* rightshift */ |
| c94cb026 | 1256 | 4, /* size */ |
| a06ea964 | 1257 | 21, /* bitsize */ |
| 0a1b45a2 | 1258 | false, /* pc_relative */ |
| a06ea964 NC |
1259 | 0, /* bitpos */ |
| 1260 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1261 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 1262 | AARCH64_R_STR (TLSIE_ADR_GOTTPREL_PAGE21), /* name */ |
| 0a1b45a2 | 1263 | false, /* partial_inplace */ |
| a06ea964 NC |
1264 | 0x1fffff, /* src_mask */ |
| 1265 | 0x1fffff, /* dst_mask */ | |
| 0a1b45a2 | 1266 | false), /* pcrel_offset */ |
| a06ea964 | 1267 | |
| a6bb11b2 | 1268 | HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC), /* type */ |
| a06ea964 | 1269 | 3, /* rightshift */ |
| c94cb026 | 1270 | 4, /* size */ |
| a06ea964 | 1271 | 12, /* bitsize */ |
| 0a1b45a2 | 1272 | false, /* pc_relative */ |
| a06ea964 NC |
1273 | 0, /* bitpos */ |
| 1274 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1275 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 1276 | AARCH64_R_STR (TLSIE_LD64_GOTTPREL_LO12_NC), /* name */ |
| 0a1b45a2 | 1277 | false, /* partial_inplace */ |
| a06ea964 NC |
1278 | 0xff8, /* src_mask */ |
| 1279 | 0xff8, /* dst_mask */ | |
| 0a1b45a2 | 1280 | false), /* pcrel_offset */ |
| a06ea964 | 1281 | |
| a6bb11b2 YZ |
1282 | HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC), /* type */ |
| 1283 | 2, /* rightshift */ | |
| c94cb026 | 1284 | 4, /* size */ |
| a6bb11b2 | 1285 | 12, /* bitsize */ |
| 0a1b45a2 | 1286 | false, /* pc_relative */ |
| a6bb11b2 YZ |
1287 | 0, /* bitpos */ |
| 1288 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1289 | bfd_elf_generic_reloc, /* special_function */ | |
| 1290 | AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC), /* name */ | |
| 0a1b45a2 | 1291 | false, /* partial_inplace */ |
| a6bb11b2 YZ |
1292 | 0xffc, /* src_mask */ |
| 1293 | 0xffc, /* dst_mask */ | |
| 0a1b45a2 | 1294 | false), /* pcrel_offset */ |
| a6bb11b2 YZ |
1295 | |
| 1296 | HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19), /* type */ | |
| bb3f9ed8 | 1297 | 2, /* rightshift */ |
| c94cb026 | 1298 | 4, /* size */ |
| 043bf05a | 1299 | 19, /* bitsize */ |
| 0a1b45a2 | 1300 | false, /* pc_relative */ |
| a06ea964 NC |
1301 | 0, /* bitpos */ |
| 1302 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1303 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 1304 | AARCH64_R_STR (TLSIE_LD_GOTTPREL_PREL19), /* name */ |
| 0a1b45a2 | 1305 | false, /* partial_inplace */ |
| a06ea964 NC |
1306 | 0x1ffffc, /* src_mask */ |
| 1307 | 0x1ffffc, /* dst_mask */ | |
| 0a1b45a2 | 1308 | false), /* pcrel_offset */ |
| a06ea964 | 1309 | |
| 3b957e5b RL |
1310 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */ |
| 1311 | 0, /* rightshift */ | |
| c94cb026 | 1312 | 4, /* size */ |
| 3b957e5b | 1313 | 16, /* bitsize */ |
| 0a1b45a2 | 1314 | false, /* pc_relative */ |
| 3b957e5b RL |
1315 | 0, /* bitpos */ |
| 1316 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1317 | bfd_elf_generic_reloc, /* special_function */ | |
| 1318 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC), /* name */ | |
| 0a1b45a2 | 1319 | false, /* partial_inplace */ |
| 3b957e5b RL |
1320 | 0xffff, /* src_mask */ |
| 1321 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 1322 | false), /* pcrel_offset */ |
| 3b957e5b RL |
1323 | |
| 1324 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1), /* type */ | |
| 1325 | 16, /* rightshift */ | |
| c94cb026 | 1326 | 4, /* size */ |
| 3b957e5b | 1327 | 16, /* bitsize */ |
| 0a1b45a2 | 1328 | false, /* pc_relative */ |
| 3b957e5b RL |
1329 | 0, /* bitpos */ |
| 1330 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 1331 | bfd_elf_generic_reloc, /* special_function */ | |
| 1332 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1), /* name */ | |
| 0a1b45a2 | 1333 | false, /* partial_inplace */ |
| 3b957e5b RL |
1334 | 0xffff, /* src_mask */ |
| 1335 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 1336 | false), /* pcrel_offset */ |
| 3b957e5b | 1337 | |
| 49df5539 JW |
1338 | /* ADD: bit[23:12] of byte offset to module TLS base address. */ |
| 1339 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_HI12), /* type */ | |
| 1340 | 12, /* rightshift */ | |
| c94cb026 | 1341 | 4, /* size */ |
| 49df5539 | 1342 | 12, /* bitsize */ |
| 0a1b45a2 | 1343 | false, /* pc_relative */ |
| 49df5539 JW |
1344 | 0, /* bitpos */ |
| 1345 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 1346 | bfd_elf_generic_reloc, /* special_function */ | |
| 1347 | AARCH64_R_STR (TLSLD_ADD_DTPREL_HI12), /* name */ | |
| 0a1b45a2 | 1348 | false, /* partial_inplace */ |
| 49df5539 JW |
1349 | 0xfff, /* src_mask */ |
| 1350 | 0xfff, /* dst_mask */ | |
| 0a1b45a2 | 1351 | false), /* pcrel_offset */ |
| 49df5539 | 1352 | |
| 70151fb5 JW |
1353 | /* Unsigned 12 bit byte offset to module TLS base address. */ |
| 1354 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12), /* type */ | |
| 1355 | 0, /* rightshift */ | |
| c94cb026 | 1356 | 4, /* size */ |
| 70151fb5 | 1357 | 12, /* bitsize */ |
| 0a1b45a2 | 1358 | false, /* pc_relative */ |
| 70151fb5 JW |
1359 | 0, /* bitpos */ |
| 1360 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 1361 | bfd_elf_generic_reloc, /* special_function */ | |
| 1362 | AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12), /* name */ | |
| 0a1b45a2 | 1363 | false, /* partial_inplace */ |
| 70151fb5 JW |
1364 | 0xfff, /* src_mask */ |
| 1365 | 0xfff, /* dst_mask */ | |
| 0a1b45a2 | 1366 | false), /* pcrel_offset */ |
| 13289c10 JW |
1367 | |
| 1368 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12. */ | |
| 1369 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12_NC), /* type */ | |
| 1370 | 0, /* rightshift */ | |
| c94cb026 | 1371 | 4, /* size */ |
| 13289c10 | 1372 | 12, /* bitsize */ |
| 0a1b45a2 | 1373 | false, /* pc_relative */ |
| 13289c10 JW |
1374 | 0, /* bitpos */ |
| 1375 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1376 | bfd_elf_generic_reloc, /* special_function */ | |
| 1377 | AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12_NC), /* name */ | |
| 0a1b45a2 | 1378 | false, /* partial_inplace */ |
| 13289c10 JW |
1379 | 0xfff, /* src_mask */ |
| 1380 | 0xfff, /* dst_mask */ | |
| 0a1b45a2 | 1381 | false), /* pcrel_offset */ |
| 70151fb5 | 1382 | |
| a12fad50 JW |
1383 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ |
| 1384 | HOWTO (AARCH64_R (TLSLD_ADD_LO12_NC), /* type */ | |
| 1385 | 0, /* rightshift */ | |
| c94cb026 | 1386 | 4, /* size */ |
| a12fad50 | 1387 | 12, /* bitsize */ |
| 0a1b45a2 | 1388 | false, /* pc_relative */ |
| a12fad50 JW |
1389 | 0, /* bitpos */ |
| 1390 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1391 | bfd_elf_generic_reloc, /* special_function */ | |
| 1392 | AARCH64_R_STR (TLSLD_ADD_LO12_NC), /* name */ | |
| 0a1b45a2 | 1393 | false, /* partial_inplace */ |
| a12fad50 JW |
1394 | 0xfff, /* src_mask */ |
| 1395 | 0xfff, /* dst_mask */ | |
| 0a1b45a2 | 1396 | false), /* pcrel_offset */ |
| a12fad50 | 1397 | |
| 1107e076 JW |
1398 | /* Get to the page for the GOT entry for the symbol |
| 1399 | (G(S) - P) using an ADRP instruction. */ | |
| 1400 | HOWTO (AARCH64_R (TLSLD_ADR_PAGE21), /* type */ | |
| 1401 | 12, /* rightshift */ | |
| c94cb026 | 1402 | 4, /* size */ |
| 1107e076 | 1403 | 21, /* bitsize */ |
| 0a1b45a2 | 1404 | true, /* pc_relative */ |
| 1107e076 JW |
1405 | 0, /* bitpos */ |
| 1406 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1407 | bfd_elf_generic_reloc, /* special_function */ | |
| 1408 | AARCH64_R_STR (TLSLD_ADR_PAGE21), /* name */ | |
| 0a1b45a2 | 1409 | false, /* partial_inplace */ |
| 1107e076 JW |
1410 | 0x1fffff, /* src_mask */ |
| 1411 | 0x1fffff, /* dst_mask */ | |
| 0a1b45a2 | 1412 | true), /* pcrel_offset */ |
| 1107e076 | 1413 | |
| 6c37fedc JW |
1414 | HOWTO (AARCH64_R (TLSLD_ADR_PREL21), /* type */ |
| 1415 | 0, /* rightshift */ | |
| c94cb026 | 1416 | 4, /* size */ |
| 6c37fedc | 1417 | 21, /* bitsize */ |
| 0a1b45a2 | 1418 | true, /* pc_relative */ |
| 6c37fedc JW |
1419 | 0, /* bitpos */ |
| 1420 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1421 | bfd_elf_generic_reloc, /* special_function */ | |
| 1422 | AARCH64_R_STR (TLSLD_ADR_PREL21), /* name */ | |
| 0a1b45a2 | 1423 | false, /* partial_inplace */ |
| 6c37fedc JW |
1424 | 0x1fffff, /* src_mask */ |
| 1425 | 0x1fffff, /* dst_mask */ | |
| 0a1b45a2 | 1426 | true), /* pcrel_offset */ |
| 6c37fedc | 1427 | |
| 4c562523 JW |
1428 | /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */ |
| 1429 | HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12), /* type */ | |
| 1430 | 1, /* rightshift */ | |
| c94cb026 | 1431 | 4, /* size */ |
| 4c562523 | 1432 | 11, /* bitsize */ |
| 0a1b45a2 | 1433 | false, /* pc_relative */ |
| 4c562523 JW |
1434 | 10, /* bitpos */ |
| 1435 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 1436 | bfd_elf_generic_reloc, /* special_function */ | |
| 1437 | AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12), /* name */ | |
| 0a1b45a2 | 1438 | false, /* partial_inplace */ |
| 4c562523 JW |
1439 | 0x1ffc00, /* src_mask */ |
| 1440 | 0x1ffc00, /* dst_mask */ | |
| 0a1b45a2 | 1441 | false), /* pcrel_offset */ |
| 4c562523 JW |
1442 | |
| 1443 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12, but no overflow check. */ | |
| 1444 | HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12_NC), /* type */ | |
| 1445 | 1, /* rightshift */ | |
| c94cb026 | 1446 | 4, /* size */ |
| 4c562523 | 1447 | 11, /* bitsize */ |
| 0a1b45a2 | 1448 | false, /* pc_relative */ |
| 4c562523 JW |
1449 | 10, /* bitpos */ |
| 1450 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1451 | bfd_elf_generic_reloc, /* special_function */ | |
| 1452 | AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12_NC), /* name */ | |
| 0a1b45a2 | 1453 | false, /* partial_inplace */ |
| 4c562523 JW |
1454 | 0x1ffc00, /* src_mask */ |
| 1455 | 0x1ffc00, /* dst_mask */ | |
| 0a1b45a2 | 1456 | false), /* pcrel_offset */ |
| 4c562523 JW |
1457 | |
| 1458 | /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */ | |
| 1459 | HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12), /* type */ | |
| 1460 | 2, /* rightshift */ | |
| c94cb026 | 1461 | 4, /* size */ |
| 4c562523 | 1462 | 10, /* bitsize */ |
| 0a1b45a2 | 1463 | false, /* pc_relative */ |
| 4c562523 JW |
1464 | 10, /* bitpos */ |
| 1465 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 1466 | bfd_elf_generic_reloc, /* special_function */ | |
| 1467 | AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12), /* name */ | |
| 0a1b45a2 | 1468 | false, /* partial_inplace */ |
| 4c562523 JW |
1469 | 0x3ffc00, /* src_mask */ |
| 1470 | 0x3ffc00, /* dst_mask */ | |
| 0a1b45a2 | 1471 | false), /* pcrel_offset */ |
| 4c562523 JW |
1472 | |
| 1473 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12, but no overflow check. */ | |
| 1474 | HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12_NC), /* type */ | |
| 1475 | 2, /* rightshift */ | |
| c94cb026 | 1476 | 4, /* size */ |
| 4c562523 | 1477 | 10, /* bitsize */ |
| 0a1b45a2 | 1478 | false, /* pc_relative */ |
| 4c562523 JW |
1479 | 10, /* bitpos */ |
| 1480 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1481 | bfd_elf_generic_reloc, /* special_function */ | |
| 1482 | AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12_NC), /* name */ | |
| 0a1b45a2 | 1483 | false, /* partial_inplace */ |
| 4c562523 JW |
1484 | 0xffc00, /* src_mask */ |
| 1485 | 0xffc00, /* dst_mask */ | |
| 0a1b45a2 | 1486 | false), /* pcrel_offset */ |
| 4c562523 JW |
1487 | |
| 1488 | /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */ | |
| 1489 | HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12), /* type */ | |
| 1490 | 3, /* rightshift */ | |
| c94cb026 | 1491 | 4, /* size */ |
| 4c562523 | 1492 | 9, /* bitsize */ |
| 0a1b45a2 | 1493 | false, /* pc_relative */ |
| 4c562523 JW |
1494 | 10, /* bitpos */ |
| 1495 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 1496 | bfd_elf_generic_reloc, /* special_function */ | |
| 1497 | AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12), /* name */ | |
| 0a1b45a2 | 1498 | false, /* partial_inplace */ |
| 4c562523 JW |
1499 | 0x3ffc00, /* src_mask */ |
| 1500 | 0x3ffc00, /* dst_mask */ | |
| 0a1b45a2 | 1501 | false), /* pcrel_offset */ |
| 4c562523 JW |
1502 | |
| 1503 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12, but no overflow check. */ | |
| 1504 | HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12_NC), /* type */ | |
| 1505 | 3, /* rightshift */ | |
| c94cb026 | 1506 | 4, /* size */ |
| 4c562523 | 1507 | 9, /* bitsize */ |
| 0a1b45a2 | 1508 | false, /* pc_relative */ |
| 4c562523 JW |
1509 | 10, /* bitpos */ |
| 1510 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1511 | bfd_elf_generic_reloc, /* special_function */ | |
| 1512 | AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12_NC), /* name */ | |
| 0a1b45a2 | 1513 | false, /* partial_inplace */ |
| 4c562523 JW |
1514 | 0x7fc00, /* src_mask */ |
| 1515 | 0x7fc00, /* dst_mask */ | |
| 0a1b45a2 | 1516 | false), /* pcrel_offset */ |
| 4c562523 JW |
1517 | |
| 1518 | /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */ | |
| 1519 | HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12), /* type */ | |
| 1520 | 0, /* rightshift */ | |
| c94cb026 | 1521 | 4, /* size */ |
| 4c562523 | 1522 | 12, /* bitsize */ |
| 0a1b45a2 | 1523 | false, /* pc_relative */ |
| 4c562523 JW |
1524 | 10, /* bitpos */ |
| 1525 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 1526 | bfd_elf_generic_reloc, /* special_function */ | |
| 1527 | AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12), /* name */ | |
| 0a1b45a2 | 1528 | false, /* partial_inplace */ |
| 4c562523 JW |
1529 | 0x3ffc00, /* src_mask */ |
| 1530 | 0x3ffc00, /* dst_mask */ | |
| 0a1b45a2 | 1531 | false), /* pcrel_offset */ |
| 4c562523 JW |
1532 | |
| 1533 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12, but no overflow check. */ | |
| 1534 | HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12_NC), /* type */ | |
| 1535 | 0, /* rightshift */ | |
| c94cb026 | 1536 | 4, /* size */ |
| 4c562523 | 1537 | 12, /* bitsize */ |
| 0a1b45a2 | 1538 | false, /* pc_relative */ |
| 4c562523 JW |
1539 | 10, /* bitpos */ |
| 1540 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1541 | bfd_elf_generic_reloc, /* special_function */ | |
| 1542 | AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12_NC), /* name */ | |
| 0a1b45a2 | 1543 | false, /* partial_inplace */ |
| 4c562523 JW |
1544 | 0x3ffc00, /* src_mask */ |
| 1545 | 0x3ffc00, /* dst_mask */ | |
| 0a1b45a2 | 1546 | false), /* pcrel_offset */ |
| 4c562523 | 1547 | |
| 49df5539 JW |
1548 | /* MOVZ: bit[15:0] of byte offset to module TLS base address. */ |
| 1549 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0), /* type */ | |
| 1550 | 0, /* rightshift */ | |
| c94cb026 | 1551 | 4, /* size */ |
| 49df5539 | 1552 | 16, /* bitsize */ |
| 0a1b45a2 | 1553 | false, /* pc_relative */ |
| 49df5539 JW |
1554 | 0, /* bitpos */ |
| 1555 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 1556 | bfd_elf_generic_reloc, /* special_function */ | |
| 1557 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0), /* name */ | |
| 0a1b45a2 | 1558 | false, /* partial_inplace */ |
| 49df5539 JW |
1559 | 0xffff, /* src_mask */ |
| 1560 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 1561 | false), /* pcrel_offset */ |
| 49df5539 JW |
1562 | |
| 1563 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0. */ | |
| 1564 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0_NC), /* type */ | |
| 1565 | 0, /* rightshift */ | |
| c94cb026 | 1566 | 4, /* size */ |
| 49df5539 | 1567 | 16, /* bitsize */ |
| 0a1b45a2 | 1568 | false, /* pc_relative */ |
| 49df5539 JW |
1569 | 0, /* bitpos */ |
| 1570 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1571 | bfd_elf_generic_reloc, /* special_function */ | |
| 1572 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0_NC), /* name */ | |
| 0a1b45a2 | 1573 | false, /* partial_inplace */ |
| 49df5539 JW |
1574 | 0xffff, /* src_mask */ |
| 1575 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 1576 | false), /* pcrel_offset */ |
| 49df5539 JW |
1577 | |
| 1578 | /* MOVZ: bit[31:16] of byte offset to module TLS base address. */ | |
| 1579 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G1), /* type */ | |
| 1580 | 16, /* rightshift */ | |
| c94cb026 | 1581 | 4, /* size */ |
| 49df5539 | 1582 | 16, /* bitsize */ |
| 0a1b45a2 | 1583 | false, /* pc_relative */ |
| 49df5539 JW |
1584 | 0, /* bitpos */ |
| 1585 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 1586 | bfd_elf_generic_reloc, /* special_function */ | |
| 1587 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1), /* name */ | |
| 0a1b45a2 | 1588 | false, /* partial_inplace */ |
| 49df5539 JW |
1589 | 0xffff, /* src_mask */ |
| 1590 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 1591 | false), /* pcrel_offset */ |
| 49df5539 JW |
1592 | |
| 1593 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1. */ | |
| 1594 | HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G1_NC), /* type */ | |
| 1595 | 16, /* rightshift */ | |
| c94cb026 | 1596 | 4, /* size */ |
| 49df5539 | 1597 | 16, /* bitsize */ |
| 0a1b45a2 | 1598 | false, /* pc_relative */ |
| 49df5539 JW |
1599 | 0, /* bitpos */ |
| 1600 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1601 | bfd_elf_generic_reloc, /* special_function */ | |
| 1602 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1_NC), /* name */ | |
| 0a1b45a2 | 1603 | false, /* partial_inplace */ |
| 49df5539 JW |
1604 | 0xffff, /* src_mask */ |
| 1605 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 1606 | false), /* pcrel_offset */ |
| 49df5539 JW |
1607 | |
| 1608 | /* MOVZ: bit[47:32] of byte offset to module TLS base address. */ | |
| 1609 | HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G2), /* type */ | |
| 1610 | 32, /* rightshift */ | |
| c94cb026 | 1611 | 4, /* size */ |
| 49df5539 | 1612 | 16, /* bitsize */ |
| 0a1b45a2 | 1613 | false, /* pc_relative */ |
| 49df5539 JW |
1614 | 0, /* bitpos */ |
| 1615 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 1616 | bfd_elf_generic_reloc, /* special_function */ | |
| 1617 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G2), /* name */ | |
| 0a1b45a2 | 1618 | false, /* partial_inplace */ |
| 49df5539 JW |
1619 | 0xffff, /* src_mask */ |
| 1620 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 1621 | false), /* pcrel_offset */ |
| 49df5539 | 1622 | |
| a6bb11b2 | 1623 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2), /* type */ |
| bb3f9ed8 | 1624 | 32, /* rightshift */ |
| c94cb026 | 1625 | 4, /* size */ |
| 07875fbc | 1626 | 16, /* bitsize */ |
| 0a1b45a2 | 1627 | false, /* pc_relative */ |
| a06ea964 | 1628 | 0, /* bitpos */ |
| 0172429c | 1629 | complain_overflow_unsigned, /* complain_on_overflow */ |
| a06ea964 | 1630 | bfd_elf_generic_reloc, /* special_function */ |
| a6bb11b2 | 1631 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G2), /* name */ |
| 0a1b45a2 | 1632 | false, /* partial_inplace */ |
| a06ea964 NC |
1633 | 0xffff, /* src_mask */ |
| 1634 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 1635 | false), /* pcrel_offset */ |
| a06ea964 | 1636 | |
| a6bb11b2 | 1637 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1), /* type */ |
| bb3f9ed8 | 1638 | 16, /* rightshift */ |
| c94cb026 | 1639 | 4, /* size */ |
| 07875fbc | 1640 | 16, /* bitsize */ |
| 0a1b45a2 | 1641 | false, /* pc_relative */ |
| a06ea964 NC |
1642 | 0, /* bitpos */ |
| 1643 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1644 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 1645 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1), /* name */ |
| 0a1b45a2 | 1646 | false, /* partial_inplace */ |
| a06ea964 NC |
1647 | 0xffff, /* src_mask */ |
| 1648 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 1649 | false), /* pcrel_offset */ |
| a06ea964 | 1650 | |
| a6bb11b2 | 1651 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */ |
| bb3f9ed8 | 1652 | 16, /* rightshift */ |
| c94cb026 | 1653 | 4, /* size */ |
| 07875fbc | 1654 | 16, /* bitsize */ |
| 0a1b45a2 | 1655 | false, /* pc_relative */ |
| a06ea964 NC |
1656 | 0, /* bitpos */ |
| 1657 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1658 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 1659 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC), /* name */ |
| 0a1b45a2 | 1660 | false, /* partial_inplace */ |
| a06ea964 NC |
1661 | 0xffff, /* src_mask */ |
| 1662 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 1663 | false), /* pcrel_offset */ |
| a06ea964 | 1664 | |
| a6bb11b2 | 1665 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0), /* type */ |
| a06ea964 | 1666 | 0, /* rightshift */ |
| c94cb026 | 1667 | 4, /* size */ |
| 07875fbc | 1668 | 16, /* bitsize */ |
| 0a1b45a2 | 1669 | false, /* pc_relative */ |
| a06ea964 NC |
1670 | 0, /* bitpos */ |
| 1671 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1672 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 1673 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0), /* name */ |
| 0a1b45a2 | 1674 | false, /* partial_inplace */ |
| a06ea964 NC |
1675 | 0xffff, /* src_mask */ |
| 1676 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 1677 | false), /* pcrel_offset */ |
| a06ea964 | 1678 | |
| a6bb11b2 | 1679 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC), /* type */ |
| a06ea964 | 1680 | 0, /* rightshift */ |
| c94cb026 | 1681 | 4, /* size */ |
| 07875fbc | 1682 | 16, /* bitsize */ |
| 0a1b45a2 | 1683 | false, /* pc_relative */ |
| a06ea964 NC |
1684 | 0, /* bitpos */ |
| 1685 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1686 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 1687 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC), /* name */ |
| 0a1b45a2 | 1688 | false, /* partial_inplace */ |
| a06ea964 NC |
1689 | 0xffff, /* src_mask */ |
| 1690 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 1691 | false), /* pcrel_offset */ |
| a06ea964 | 1692 | |
| a6bb11b2 | 1693 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12), /* type */ |
| bb3f9ed8 | 1694 | 12, /* rightshift */ |
| c94cb026 | 1695 | 4, /* size */ |
| a06ea964 | 1696 | 12, /* bitsize */ |
| 0a1b45a2 | 1697 | false, /* pc_relative */ |
| a06ea964 | 1698 | 0, /* bitpos */ |
| bab91cce | 1699 | complain_overflow_unsigned, /* complain_on_overflow */ |
| a06ea964 | 1700 | bfd_elf_generic_reloc, /* special_function */ |
| a6bb11b2 | 1701 | AARCH64_R_STR (TLSLE_ADD_TPREL_HI12), /* name */ |
| 0a1b45a2 | 1702 | false, /* partial_inplace */ |
| a06ea964 NC |
1703 | 0xfff, /* src_mask */ |
| 1704 | 0xfff, /* dst_mask */ | |
| 0a1b45a2 | 1705 | false), /* pcrel_offset */ |
| a06ea964 | 1706 | |
| a6bb11b2 | 1707 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12), /* type */ |
| a06ea964 | 1708 | 0, /* rightshift */ |
| c94cb026 | 1709 | 4, /* size */ |
| a06ea964 | 1710 | 12, /* bitsize */ |
| 0a1b45a2 | 1711 | false, /* pc_relative */ |
| a06ea964 | 1712 | 0, /* bitpos */ |
| 36e6c140 | 1713 | complain_overflow_unsigned, /* complain_on_overflow */ |
| a06ea964 | 1714 | bfd_elf_generic_reloc, /* special_function */ |
| a6bb11b2 | 1715 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12), /* name */ |
| 0a1b45a2 | 1716 | false, /* partial_inplace */ |
| a06ea964 NC |
1717 | 0xfff, /* src_mask */ |
| 1718 | 0xfff, /* dst_mask */ | |
| 0a1b45a2 | 1719 | false), /* pcrel_offset */ |
| a06ea964 | 1720 | |
| a6bb11b2 | 1721 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC), /* type */ |
| a06ea964 | 1722 | 0, /* rightshift */ |
| c94cb026 | 1723 | 4, /* size */ |
| a06ea964 | 1724 | 12, /* bitsize */ |
| 0a1b45a2 | 1725 | false, /* pc_relative */ |
| a06ea964 NC |
1726 | 0, /* bitpos */ |
| 1727 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1728 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 1729 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC), /* name */ |
| 0a1b45a2 | 1730 | false, /* partial_inplace */ |
| a06ea964 NC |
1731 | 0xfff, /* src_mask */ |
| 1732 | 0xfff, /* dst_mask */ | |
| 0a1b45a2 | 1733 | false), /* pcrel_offset */ |
| a06ea964 | 1734 | |
| 84f1b9fb RL |
1735 | /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */ |
| 1736 | HOWTO (AARCH64_R (TLSLE_LDST16_TPREL_LO12), /* type */ | |
| 1737 | 1, /* rightshift */ | |
| c94cb026 | 1738 | 4, /* size */ |
| 84f1b9fb | 1739 | 11, /* bitsize */ |
| 0a1b45a2 | 1740 | false, /* pc_relative */ |
| 84f1b9fb RL |
1741 | 10, /* bitpos */ |
| 1742 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 1743 | bfd_elf_generic_reloc, /* special_function */ | |
| 1744 | AARCH64_R_STR (TLSLE_LDST16_TPREL_LO12), /* name */ | |
| 0a1b45a2 | 1745 | false, /* partial_inplace */ |
| 84f1b9fb RL |
1746 | 0x1ffc00, /* src_mask */ |
| 1747 | 0x1ffc00, /* dst_mask */ | |
| 0a1b45a2 | 1748 | false), /* pcrel_offset */ |
| 84f1b9fb RL |
1749 | |
| 1750 | /* Same as BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12, but no overflow check. */ | |
| 1751 | HOWTO (AARCH64_R (TLSLE_LDST16_TPREL_LO12_NC), /* type */ | |
| 1752 | 1, /* rightshift */ | |
| c94cb026 | 1753 | 4, /* size */ |
| 84f1b9fb | 1754 | 11, /* bitsize */ |
| 0a1b45a2 | 1755 | false, /* pc_relative */ |
| 84f1b9fb RL |
1756 | 10, /* bitpos */ |
| 1757 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1758 | bfd_elf_generic_reloc, /* special_function */ | |
| 1759 | AARCH64_R_STR (TLSLE_LDST16_TPREL_LO12_NC), /* name */ | |
| 0a1b45a2 | 1760 | false, /* partial_inplace */ |
| 84f1b9fb RL |
1761 | 0x1ffc00, /* src_mask */ |
| 1762 | 0x1ffc00, /* dst_mask */ | |
| 0a1b45a2 | 1763 | false), /* pcrel_offset */ |
| 84f1b9fb RL |
1764 | |
| 1765 | /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */ | |
| 1766 | HOWTO (AARCH64_R (TLSLE_LDST32_TPREL_LO12), /* type */ | |
| 1767 | 2, /* rightshift */ | |
| c94cb026 | 1768 | 4, /* size */ |
| 84f1b9fb | 1769 | 10, /* bitsize */ |
| 0a1b45a2 | 1770 | false, /* pc_relative */ |
| 84f1b9fb RL |
1771 | 10, /* bitpos */ |
| 1772 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 1773 | bfd_elf_generic_reloc, /* special_function */ | |
| 1774 | AARCH64_R_STR (TLSLE_LDST32_TPREL_LO12), /* name */ | |
| 0a1b45a2 | 1775 | false, /* partial_inplace */ |
| 84f1b9fb RL |
1776 | 0xffc00, /* src_mask */ |
| 1777 | 0xffc00, /* dst_mask */ | |
| 0a1b45a2 | 1778 | false), /* pcrel_offset */ |
| 84f1b9fb RL |
1779 | |
| 1780 | /* Same as BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12, but no overflow check. */ | |
| 1781 | HOWTO (AARCH64_R (TLSLE_LDST32_TPREL_LO12_NC), /* type */ | |
| 1782 | 2, /* rightshift */ | |
| c94cb026 | 1783 | 4, /* size */ |
| 84f1b9fb | 1784 | 10, /* bitsize */ |
| 0a1b45a2 | 1785 | false, /* pc_relative */ |
| 84f1b9fb RL |
1786 | 10, /* bitpos */ |
| 1787 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1788 | bfd_elf_generic_reloc, /* special_function */ | |
| 1789 | AARCH64_R_STR (TLSLE_LDST32_TPREL_LO12_NC), /* name */ | |
| 0a1b45a2 | 1790 | false, /* partial_inplace */ |
| 84f1b9fb RL |
1791 | 0xffc00, /* src_mask */ |
| 1792 | 0xffc00, /* dst_mask */ | |
| 0a1b45a2 | 1793 | false), /* pcrel_offset */ |
| 84f1b9fb RL |
1794 | |
| 1795 | /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */ | |
| 1796 | HOWTO (AARCH64_R (TLSLE_LDST64_TPREL_LO12), /* type */ | |
| 1797 | 3, /* rightshift */ | |
| c94cb026 | 1798 | 4, /* size */ |
| 84f1b9fb | 1799 | 9, /* bitsize */ |
| 0a1b45a2 | 1800 | false, /* pc_relative */ |
| 84f1b9fb RL |
1801 | 10, /* bitpos */ |
| 1802 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 1803 | bfd_elf_generic_reloc, /* special_function */ | |
| 1804 | AARCH64_R_STR (TLSLE_LDST64_TPREL_LO12), /* name */ | |
| 0a1b45a2 | 1805 | false, /* partial_inplace */ |
| 84f1b9fb RL |
1806 | 0x7fc00, /* src_mask */ |
| 1807 | 0x7fc00, /* dst_mask */ | |
| 0a1b45a2 | 1808 | false), /* pcrel_offset */ |
| 84f1b9fb RL |
1809 | |
| 1810 | /* Same as BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12, but no overflow check. */ | |
| 1811 | HOWTO (AARCH64_R (TLSLE_LDST64_TPREL_LO12_NC), /* type */ | |
| 1812 | 3, /* rightshift */ | |
| c94cb026 | 1813 | 4, /* size */ |
| 84f1b9fb | 1814 | 9, /* bitsize */ |
| 0a1b45a2 | 1815 | false, /* pc_relative */ |
| 84f1b9fb RL |
1816 | 10, /* bitpos */ |
| 1817 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1818 | bfd_elf_generic_reloc, /* special_function */ | |
| 1819 | AARCH64_R_STR (TLSLE_LDST64_TPREL_LO12_NC), /* name */ | |
| 0a1b45a2 | 1820 | false, /* partial_inplace */ |
| 84f1b9fb RL |
1821 | 0x7fc00, /* src_mask */ |
| 1822 | 0x7fc00, /* dst_mask */ | |
| 0a1b45a2 | 1823 | false), /* pcrel_offset */ |
| 84f1b9fb RL |
1824 | |
| 1825 | /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */ | |
| 1826 | HOWTO (AARCH64_R (TLSLE_LDST8_TPREL_LO12), /* type */ | |
| 1827 | 0, /* rightshift */ | |
| c94cb026 | 1828 | 4, /* size */ |
| 84f1b9fb | 1829 | 12, /* bitsize */ |
| 0a1b45a2 | 1830 | false, /* pc_relative */ |
| 84f1b9fb RL |
1831 | 10, /* bitpos */ |
| 1832 | complain_overflow_unsigned, /* complain_on_overflow */ | |
| 1833 | bfd_elf_generic_reloc, /* special_function */ | |
| 1834 | AARCH64_R_STR (TLSLE_LDST8_TPREL_LO12), /* name */ | |
| 0a1b45a2 | 1835 | false, /* partial_inplace */ |
| 84f1b9fb RL |
1836 | 0x3ffc00, /* src_mask */ |
| 1837 | 0x3ffc00, /* dst_mask */ | |
| 0a1b45a2 | 1838 | false), /* pcrel_offset */ |
| 84f1b9fb RL |
1839 | |
| 1840 | /* Same as BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12, but no overflow check. */ | |
| 1841 | HOWTO (AARCH64_R (TLSLE_LDST8_TPREL_LO12_NC), /* type */ | |
| 1842 | 0, /* rightshift */ | |
| c94cb026 | 1843 | 4, /* size */ |
| 84f1b9fb | 1844 | 12, /* bitsize */ |
| 0a1b45a2 | 1845 | false, /* pc_relative */ |
| 84f1b9fb RL |
1846 | 10, /* bitpos */ |
| 1847 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1848 | bfd_elf_generic_reloc, /* special_function */ | |
| 1849 | AARCH64_R_STR (TLSLE_LDST8_TPREL_LO12_NC), /* name */ | |
| 0a1b45a2 | 1850 | false, /* partial_inplace */ |
| 84f1b9fb RL |
1851 | 0x3ffc00, /* src_mask */ |
| 1852 | 0x3ffc00, /* dst_mask */ | |
| 0a1b45a2 | 1853 | false), /* pcrel_offset */ |
| 84f1b9fb | 1854 | |
| a6bb11b2 | 1855 | HOWTO (AARCH64_R (TLSDESC_LD_PREL19), /* type */ |
| bb3f9ed8 | 1856 | 2, /* rightshift */ |
| c94cb026 | 1857 | 4, /* size */ |
| 1ada945d | 1858 | 19, /* bitsize */ |
| 0a1b45a2 | 1859 | true, /* pc_relative */ |
| a06ea964 NC |
1860 | 0, /* bitpos */ |
| 1861 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1862 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 1863 | AARCH64_R_STR (TLSDESC_LD_PREL19), /* name */ |
| 0a1b45a2 | 1864 | false, /* partial_inplace */ |
| 1ada945d MS |
1865 | 0x0ffffe0, /* src_mask */ |
| 1866 | 0x0ffffe0, /* dst_mask */ | |
| 0a1b45a2 | 1867 | true), /* pcrel_offset */ |
| a06ea964 | 1868 | |
| a6bb11b2 | 1869 | HOWTO (AARCH64_R (TLSDESC_ADR_PREL21), /* type */ |
| a06ea964 | 1870 | 0, /* rightshift */ |
| c94cb026 | 1871 | 4, /* size */ |
| a06ea964 | 1872 | 21, /* bitsize */ |
| 0a1b45a2 | 1873 | true, /* pc_relative */ |
| a06ea964 NC |
1874 | 0, /* bitpos */ |
| 1875 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1876 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 1877 | AARCH64_R_STR (TLSDESC_ADR_PREL21), /* name */ |
| 0a1b45a2 | 1878 | false, /* partial_inplace */ |
| a06ea964 NC |
1879 | 0x1fffff, /* src_mask */ |
| 1880 | 0x1fffff, /* dst_mask */ | |
| 0a1b45a2 | 1881 | true), /* pcrel_offset */ |
| a06ea964 NC |
1882 | |
| 1883 | /* Get to the page for the GOT entry for the symbol | |
| 1884 | (G(S) - P) using an ADRP instruction. */ | |
| a6bb11b2 | 1885 | HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21), /* type */ |
| a06ea964 | 1886 | 12, /* rightshift */ |
| c94cb026 | 1887 | 4, /* size */ |
| a06ea964 | 1888 | 21, /* bitsize */ |
| 0a1b45a2 | 1889 | true, /* pc_relative */ |
| a06ea964 NC |
1890 | 0, /* bitpos */ |
| 1891 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1892 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 1893 | AARCH64_R_STR (TLSDESC_ADR_PAGE21), /* name */ |
| 0a1b45a2 | 1894 | false, /* partial_inplace */ |
| a06ea964 NC |
1895 | 0x1fffff, /* src_mask */ |
| 1896 | 0x1fffff, /* dst_mask */ | |
| 0a1b45a2 | 1897 | true), /* pcrel_offset */ |
| a06ea964 | 1898 | |
| a6bb11b2 | 1899 | /* LD64: GOT offset G(S) & 0xff8. */ |
| f955cccf | 1900 | HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12), /* type */ |
| a06ea964 | 1901 | 3, /* rightshift */ |
| c94cb026 | 1902 | 4, /* size */ |
| a06ea964 | 1903 | 12, /* bitsize */ |
| 0a1b45a2 | 1904 | false, /* pc_relative */ |
| a06ea964 NC |
1905 | 0, /* bitpos */ |
| 1906 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1907 | bfd_elf_generic_reloc, /* special_function */ | |
| f955cccf | 1908 | AARCH64_R_STR (TLSDESC_LD64_LO12), /* name */ |
| 0a1b45a2 | 1909 | false, /* partial_inplace */ |
| a6bb11b2 YZ |
1910 | 0xff8, /* src_mask */ |
| 1911 | 0xff8, /* dst_mask */ | |
| 0a1b45a2 | 1912 | false), /* pcrel_offset */ |
| a6bb11b2 YZ |
1913 | |
| 1914 | /* LD32: GOT offset G(S) & 0xffc. */ | |
| 1915 | HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC), /* type */ | |
| 1916 | 2, /* rightshift */ | |
| c94cb026 | 1917 | 4, /* size */ |
| a6bb11b2 | 1918 | 12, /* bitsize */ |
| 0a1b45a2 | 1919 | false, /* pc_relative */ |
| a6bb11b2 YZ |
1920 | 0, /* bitpos */ |
| 1921 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1922 | bfd_elf_generic_reloc, /* special_function */ | |
| 1923 | AARCH64_R_STR (TLSDESC_LD32_LO12_NC), /* name */ | |
| 0a1b45a2 | 1924 | false, /* partial_inplace */ |
| a6bb11b2 YZ |
1925 | 0xffc, /* src_mask */ |
| 1926 | 0xffc, /* dst_mask */ | |
| 0a1b45a2 | 1927 | false), /* pcrel_offset */ |
| a06ea964 NC |
1928 | |
| 1929 | /* ADD: GOT offset G(S) & 0xfff. */ | |
| f955cccf | 1930 | HOWTO (AARCH64_R (TLSDESC_ADD_LO12), /* type */ |
| a06ea964 | 1931 | 0, /* rightshift */ |
| c94cb026 | 1932 | 4, /* size */ |
| a06ea964 | 1933 | 12, /* bitsize */ |
| 0a1b45a2 | 1934 | false, /* pc_relative */ |
| a06ea964 | 1935 | 0, /* bitpos */ |
| f955cccf | 1936 | complain_overflow_dont,/* complain_on_overflow */ |
| a06ea964 | 1937 | bfd_elf_generic_reloc, /* special_function */ |
| f955cccf | 1938 | AARCH64_R_STR (TLSDESC_ADD_LO12), /* name */ |
| 0a1b45a2 | 1939 | false, /* partial_inplace */ |
| a06ea964 NC |
1940 | 0xfff, /* src_mask */ |
| 1941 | 0xfff, /* dst_mask */ | |
| 0a1b45a2 | 1942 | false), /* pcrel_offset */ |
| a06ea964 | 1943 | |
| a6bb11b2 | 1944 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G1), /* type */ |
| bb3f9ed8 | 1945 | 16, /* rightshift */ |
| c94cb026 | 1946 | 4, /* size */ |
| a06ea964 | 1947 | 12, /* bitsize */ |
| 0a1b45a2 | 1948 | false, /* pc_relative */ |
| a06ea964 | 1949 | 0, /* bitpos */ |
| 43a357f9 | 1950 | complain_overflow_unsigned, /* complain_on_overflow */ |
| a06ea964 | 1951 | bfd_elf_generic_reloc, /* special_function */ |
| a6bb11b2 | 1952 | AARCH64_R_STR (TLSDESC_OFF_G1), /* name */ |
| 0a1b45a2 | 1953 | false, /* partial_inplace */ |
| a06ea964 NC |
1954 | 0xffff, /* src_mask */ |
| 1955 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 1956 | false), /* pcrel_offset */ |
| a06ea964 | 1957 | |
| a6bb11b2 | 1958 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC), /* type */ |
| a06ea964 | 1959 | 0, /* rightshift */ |
| c94cb026 | 1960 | 4, /* size */ |
| a06ea964 | 1961 | 12, /* bitsize */ |
| 0a1b45a2 | 1962 | false, /* pc_relative */ |
| a06ea964 NC |
1963 | 0, /* bitpos */ |
| 1964 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1965 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 1966 | AARCH64_R_STR (TLSDESC_OFF_G0_NC), /* name */ |
| 0a1b45a2 | 1967 | false, /* partial_inplace */ |
| a06ea964 NC |
1968 | 0xffff, /* src_mask */ |
| 1969 | 0xffff, /* dst_mask */ | |
| 0a1b45a2 | 1970 | false), /* pcrel_offset */ |
| a06ea964 | 1971 | |
| a6bb11b2 | 1972 | HOWTO64 (AARCH64_R (TLSDESC_LDR), /* type */ |
| a06ea964 | 1973 | 0, /* rightshift */ |
| c94cb026 | 1974 | 4, /* size */ |
| a06ea964 | 1975 | 12, /* bitsize */ |
| 0a1b45a2 | 1976 | false, /* pc_relative */ |
| a06ea964 NC |
1977 | 0, /* bitpos */ |
| 1978 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1979 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 1980 | AARCH64_R_STR (TLSDESC_LDR), /* name */ |
| 0a1b45a2 | 1981 | false, /* partial_inplace */ |
| a06ea964 NC |
1982 | 0x0, /* src_mask */ |
| 1983 | 0x0, /* dst_mask */ | |
| 0a1b45a2 | 1984 | false), /* pcrel_offset */ |
| a06ea964 | 1985 | |
| a6bb11b2 | 1986 | HOWTO64 (AARCH64_R (TLSDESC_ADD), /* type */ |
| a06ea964 | 1987 | 0, /* rightshift */ |
| c94cb026 | 1988 | 4, /* size */ |
| a06ea964 | 1989 | 12, /* bitsize */ |
| 0a1b45a2 | 1990 | false, /* pc_relative */ |
| a06ea964 NC |
1991 | 0, /* bitpos */ |
| 1992 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1993 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 1994 | AARCH64_R_STR (TLSDESC_ADD), /* name */ |
| 0a1b45a2 | 1995 | false, /* partial_inplace */ |
| a06ea964 NC |
1996 | 0x0, /* src_mask */ |
| 1997 | 0x0, /* dst_mask */ | |
| 0a1b45a2 | 1998 | false), /* pcrel_offset */ |
| a06ea964 | 1999 | |
| a6bb11b2 | 2000 | HOWTO (AARCH64_R (TLSDESC_CALL), /* type */ |
| a06ea964 | 2001 | 0, /* rightshift */ |
| c94cb026 | 2002 | 4, /* size */ |
| 7366006f | 2003 | 0, /* bitsize */ |
| 0a1b45a2 | 2004 | false, /* pc_relative */ |
| a06ea964 NC |
2005 | 0, /* bitpos */ |
| 2006 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2007 | bfd_elf_generic_reloc, /* special_function */ | |
| a6bb11b2 | 2008 | AARCH64_R_STR (TLSDESC_CALL), /* name */ |
| 0a1b45a2 | 2009 | false, /* partial_inplace */ |
| a06ea964 NC |
2010 | 0x0, /* src_mask */ |
| 2011 | 0x0, /* dst_mask */ | |
| 0a1b45a2 | 2012 | false), /* pcrel_offset */ |
| a6bb11b2 YZ |
2013 | |
| 2014 | HOWTO (AARCH64_R (COPY), /* type */ | |
| 2015 | 0, /* rightshift */ | |
| c94cb026 | 2016 | 4, /* size */ |
| a6bb11b2 | 2017 | 64, /* bitsize */ |
| 0a1b45a2 | 2018 | false, /* pc_relative */ |
| a6bb11b2 YZ |
2019 | 0, /* bitpos */ |
| 2020 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 2021 | bfd_elf_generic_reloc, /* special_function */ | |
| 2022 | AARCH64_R_STR (COPY), /* name */ | |
| 0a1b45a2 | 2023 | true, /* partial_inplace */ |
| a6bb11b2 YZ |
2024 | 0xffffffff, /* src_mask */ |
| 2025 | 0xffffffff, /* dst_mask */ | |
| 0a1b45a2 | 2026 | false), /* pcrel_offset */ |
| a6bb11b2 YZ |
2027 | |
| 2028 | HOWTO (AARCH64_R (GLOB_DAT), /* type */ | |
| 2029 | 0, /* rightshift */ | |
| c94cb026 | 2030 | 4, /* size */ |
| a6bb11b2 | 2031 | 64, /* bitsize */ |
| 0a1b45a2 | 2032 | false, /* pc_relative */ |
| a6bb11b2 YZ |
2033 | 0, /* bitpos */ |
| 2034 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 2035 | bfd_elf_generic_reloc, /* special_function */ | |
| 2036 | AARCH64_R_STR (GLOB_DAT), /* name */ | |
| 0a1b45a2 | 2037 | true, /* partial_inplace */ |
| a6bb11b2 YZ |
2038 | 0xffffffff, /* src_mask */ |
| 2039 | 0xffffffff, /* dst_mask */ | |
| 0a1b45a2 | 2040 | false), /* pcrel_offset */ |
| a6bb11b2 YZ |
2041 | |
| 2042 | HOWTO (AARCH64_R (JUMP_SLOT), /* type */ | |
| 2043 | 0, /* rightshift */ | |
| c94cb026 | 2044 | 4, /* size */ |
| a6bb11b2 | 2045 | 64, /* bitsize */ |
| 0a1b45a2 | 2046 | false, /* pc_relative */ |
| a6bb11b2 YZ |
2047 | 0, /* bitpos */ |
| 2048 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 2049 | bfd_elf_generic_reloc, /* special_function */ | |
| 2050 | AARCH64_R_STR (JUMP_SLOT), /* name */ | |
| 0a1b45a2 | 2051 | true, /* partial_inplace */ |
| a6bb11b2 YZ |
2052 | 0xffffffff, /* src_mask */ |
| 2053 | 0xffffffff, /* dst_mask */ | |
| 0a1b45a2 | 2054 | false), /* pcrel_offset */ |
| a6bb11b2 YZ |
2055 | |
| 2056 | HOWTO (AARCH64_R (RELATIVE), /* type */ | |
| 2057 | 0, /* rightshift */ | |
| c94cb026 | 2058 | 4, /* size */ |
| a6bb11b2 | 2059 | 64, /* bitsize */ |
| 0a1b45a2 | 2060 | false, /* pc_relative */ |
| a6bb11b2 YZ |
2061 | 0, /* bitpos */ |
| 2062 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 2063 | bfd_elf_generic_reloc, /* special_function */ | |
| 2064 | AARCH64_R_STR (RELATIVE), /* name */ | |
| 0a1b45a2 | 2065 | true, /* partial_inplace */ |
| a6bb11b2 YZ |
2066 | ALL_ONES, /* src_mask */ |
| 2067 | ALL_ONES, /* dst_mask */ | |
| 0a1b45a2 | 2068 | false), /* pcrel_offset */ |
| a6bb11b2 YZ |
2069 | |
| 2070 | HOWTO (AARCH64_R (TLS_DTPMOD), /* type */ | |
| 2071 | 0, /* rightshift */ | |
| c94cb026 | 2072 | 4, /* size */ |
| a6bb11b2 | 2073 | 64, /* bitsize */ |
| 0a1b45a2 | 2074 | false, /* pc_relative */ |
| a6bb11b2 YZ |
2075 | 0, /* bitpos */ |
| 2076 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2077 | bfd_elf_generic_reloc, /* special_function */ | |
| da0781dc YZ |
2078 | #if ARCH_SIZE == 64 |
| 2079 | AARCH64_R_STR (TLS_DTPMOD64), /* name */ | |
| 2080 | #else | |
| a6bb11b2 | 2081 | AARCH64_R_STR (TLS_DTPMOD), /* name */ |
| da0781dc | 2082 | #endif |
| 0a1b45a2 | 2083 | false, /* partial_inplace */ |
| a6bb11b2 YZ |
2084 | 0, /* src_mask */ |
| 2085 | ALL_ONES, /* dst_mask */ | |
| 0a1b45a2 | 2086 | false), /* pc_reloffset */ |
| a6bb11b2 YZ |
2087 | |
| 2088 | HOWTO (AARCH64_R (TLS_DTPREL), /* type */ | |
| 2089 | 0, /* rightshift */ | |
| c94cb026 | 2090 | 4, /* size */ |
| a6bb11b2 | 2091 | 64, /* bitsize */ |
| 0a1b45a2 | 2092 | false, /* pc_relative */ |
| a6bb11b2 YZ |
2093 | 0, /* bitpos */ |
| 2094 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2095 | bfd_elf_generic_reloc, /* special_function */ | |
| da0781dc YZ |
2096 | #if ARCH_SIZE == 64 |
| 2097 | AARCH64_R_STR (TLS_DTPREL64), /* name */ | |
| 2098 | #else | |
| a6bb11b2 | 2099 | AARCH64_R_STR (TLS_DTPREL), /* name */ |
| da0781dc | 2100 | #endif |
| 0a1b45a2 | 2101 | false, /* partial_inplace */ |
| a6bb11b2 YZ |
2102 | 0, /* src_mask */ |
| 2103 | ALL_ONES, /* dst_mask */ | |
| 0a1b45a2 | 2104 | false), /* pcrel_offset */ |
| a6bb11b2 YZ |
2105 | |
| 2106 | HOWTO (AARCH64_R (TLS_TPREL), /* type */ | |
| 2107 | 0, /* rightshift */ | |
| c94cb026 | 2108 | 4, /* size */ |
| a6bb11b2 | 2109 | 64, /* bitsize */ |
| 0a1b45a2 | 2110 | false, /* pc_relative */ |
| a6bb11b2 YZ |
2111 | 0, /* bitpos */ |
| 2112 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2113 | bfd_elf_generic_reloc, /* special_function */ | |
| da0781dc YZ |
2114 | #if ARCH_SIZE == 64 |
| 2115 | AARCH64_R_STR (TLS_TPREL64), /* name */ | |
| 2116 | #else | |
| a6bb11b2 | 2117 | AARCH64_R_STR (TLS_TPREL), /* name */ |
| da0781dc | 2118 | #endif |
| 0a1b45a2 | 2119 | false, /* partial_inplace */ |
| a6bb11b2 YZ |
2120 | 0, /* src_mask */ |
| 2121 | ALL_ONES, /* dst_mask */ | |
| 0a1b45a2 | 2122 | false), /* pcrel_offset */ |
| a6bb11b2 YZ |
2123 | |
| 2124 | HOWTO (AARCH64_R (TLSDESC), /* type */ | |
| 2125 | 0, /* rightshift */ | |
| c94cb026 | 2126 | 4, /* size */ |
| a6bb11b2 | 2127 | 64, /* bitsize */ |
| 0a1b45a2 | 2128 | false, /* pc_relative */ |
| a6bb11b2 YZ |
2129 | 0, /* bitpos */ |
| 2130 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2131 | bfd_elf_generic_reloc, /* special_function */ | |
| 2132 | AARCH64_R_STR (TLSDESC), /* name */ | |
| 0a1b45a2 | 2133 | false, /* partial_inplace */ |
| a6bb11b2 YZ |
2134 | 0, /* src_mask */ |
| 2135 | ALL_ONES, /* dst_mask */ | |
| 0a1b45a2 | 2136 | false), /* pcrel_offset */ |
| a6bb11b2 YZ |
2137 | |
| 2138 | HOWTO (AARCH64_R (IRELATIVE), /* type */ | |
| 2139 | 0, /* rightshift */ | |
| c94cb026 | 2140 | 4, /* size */ |
| a6bb11b2 | 2141 | 64, /* bitsize */ |
| 0a1b45a2 | 2142 | false, /* pc_relative */ |
| a6bb11b2 YZ |
2143 | 0, /* bitpos */ |
| 2144 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 2145 | bfd_elf_generic_reloc, /* special_function */ | |
| 2146 | AARCH64_R_STR (IRELATIVE), /* name */ | |
| 0a1b45a2 | 2147 | false, /* partial_inplace */ |
| a6bb11b2 YZ |
2148 | 0, /* src_mask */ |
| 2149 | ALL_ONES, /* dst_mask */ | |
| 0a1b45a2 | 2150 | false), /* pcrel_offset */ |
| a6bb11b2 YZ |
2151 | |
| 2152 | EMPTY_HOWTO (0), | |
| a06ea964 NC |
2153 | }; |
| 2154 | ||
| a6bb11b2 YZ |
2155 | static reloc_howto_type elfNN_aarch64_howto_none = |
| 2156 | HOWTO (R_AARCH64_NONE, /* type */ | |
| 2157 | 0, /* rightshift */ | |
| c94cb026 | 2158 | 0, /* size */ |
| a6bb11b2 | 2159 | 0, /* bitsize */ |
| 0a1b45a2 | 2160 | false, /* pc_relative */ |
| a6bb11b2 YZ |
2161 | 0, /* bitpos */ |
| 2162 | complain_overflow_dont,/* complain_on_overflow */ | |
| 2163 | bfd_elf_generic_reloc, /* special_function */ | |
| 2164 | "R_AARCH64_NONE", /* name */ | |
| 0a1b45a2 | 2165 | false, /* partial_inplace */ |
| a6bb11b2 YZ |
2166 | 0, /* src_mask */ |
| 2167 | 0, /* dst_mask */ | |
| 0a1b45a2 | 2168 | false); /* pcrel_offset */ |
| a6bb11b2 YZ |
2169 | |
| 2170 | /* Given HOWTO, return the bfd internal relocation enumerator. */ | |
| 2171 | ||
| 2172 | static bfd_reloc_code_real_type | |
| 2173 | elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type *howto) | |
| 2174 | { | |
| 2175 | const int size | |
| 2176 | = (int) ARRAY_SIZE (elfNN_aarch64_howto_table); | |
| 2177 | const ptrdiff_t offset | |
| 2178 | = howto - elfNN_aarch64_howto_table; | |
| 2179 | ||
| 2180 | if (offset > 0 && offset < size - 1) | |
| 2181 | return BFD_RELOC_AARCH64_RELOC_START + offset; | |
| 2182 | ||
| 2183 | if (howto == &elfNN_aarch64_howto_none) | |
| 2184 | return BFD_RELOC_AARCH64_NONE; | |
| 2185 | ||
| 2186 | return BFD_RELOC_AARCH64_RELOC_START; | |
| 2187 | } | |
| 2188 | ||
| 2189 | /* Given R_TYPE, return the bfd internal relocation enumerator. */ | |
| 2190 | ||
| 2191 | static bfd_reloc_code_real_type | |
| 0aa13fee | 2192 | elfNN_aarch64_bfd_reloc_from_type (bfd *abfd, unsigned int r_type) |
| a6bb11b2 | 2193 | { |
| 0a1b45a2 | 2194 | static bool initialized_p = false; |
| a6bb11b2 YZ |
2195 | /* Indexed by R_TYPE, values are offsets in the howto_table. */ |
| 2196 | static unsigned int offsets[R_AARCH64_end]; | |
| 2197 | ||
| 535b785f | 2198 | if (!initialized_p) |
| a6bb11b2 YZ |
2199 | { |
| 2200 | unsigned int i; | |
| 2201 | ||
| 2202 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) | |
| 2203 | if (elfNN_aarch64_howto_table[i].type != 0) | |
| 2204 | offsets[elfNN_aarch64_howto_table[i].type] = i; | |
| 2205 | ||
| 0a1b45a2 | 2206 | initialized_p = true; |
| a6bb11b2 YZ |
2207 | } |
| 2208 | ||
| 2209 | if (r_type == R_AARCH64_NONE || r_type == R_AARCH64_NULL) | |
| 2210 | return BFD_RELOC_AARCH64_NONE; | |
| 2211 | ||
| 5860e3f8 NC |
2212 | /* PR 17512: file: b371e70a. */ |
| 2213 | if (r_type >= R_AARCH64_end) | |
| 2214 | { | |
| 0aa13fee AM |
2215 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
| 2216 | abfd, r_type); | |
| 5860e3f8 NC |
2217 | bfd_set_error (bfd_error_bad_value); |
| 2218 | return BFD_RELOC_AARCH64_NONE; | |
| 2219 | } | |
| 2220 | ||
| a6bb11b2 YZ |
2221 | return BFD_RELOC_AARCH64_RELOC_START + offsets[r_type]; |
| 2222 | } | |
| 2223 | ||
| 2224 | struct elf_aarch64_reloc_map | |
| 2225 | { | |
| 2226 | bfd_reloc_code_real_type from; | |
| 2227 | bfd_reloc_code_real_type to; | |
| 2228 | }; | |
| 2229 | ||
| 2230 | /* Map bfd generic reloc to AArch64-specific reloc. */ | |
| 2231 | static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map[] = | |
| 2232 | { | |
| 2233 | {BFD_RELOC_NONE, BFD_RELOC_AARCH64_NONE}, | |
| 2234 | ||
| 2235 | /* Basic data relocations. */ | |
| 2236 | {BFD_RELOC_CTOR, BFD_RELOC_AARCH64_NN}, | |
| 2237 | {BFD_RELOC_64, BFD_RELOC_AARCH64_64}, | |
| 2238 | {BFD_RELOC_32, BFD_RELOC_AARCH64_32}, | |
| 2239 | {BFD_RELOC_16, BFD_RELOC_AARCH64_16}, | |
| 2240 | {BFD_RELOC_64_PCREL, BFD_RELOC_AARCH64_64_PCREL}, | |
| 2241 | {BFD_RELOC_32_PCREL, BFD_RELOC_AARCH64_32_PCREL}, | |
| 2242 | {BFD_RELOC_16_PCREL, BFD_RELOC_AARCH64_16_PCREL}, | |
| 2243 | }; | |
| 2244 | ||
| 2245 | /* Given the bfd internal relocation enumerator in CODE, return the | |
| 2246 | corresponding howto entry. */ | |
| 2247 | ||
| 2248 | static reloc_howto_type * | |
| 2249 | elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code) | |
| 2250 | { | |
| 2251 | unsigned int i; | |
| 2252 | ||
| 2253 | /* Convert bfd generic reloc to AArch64-specific reloc. */ | |
| 2254 | if (code < BFD_RELOC_AARCH64_RELOC_START | |
| 2255 | || code > BFD_RELOC_AARCH64_RELOC_END) | |
| 2256 | for (i = 0; i < ARRAY_SIZE (elf_aarch64_reloc_map); i++) | |
| 2257 | if (elf_aarch64_reloc_map[i].from == code) | |
| 2258 | { | |
| 2259 | code = elf_aarch64_reloc_map[i].to; | |
| 2260 | break; | |
| 2261 | } | |
| 2262 | ||
| 2263 | if (code > BFD_RELOC_AARCH64_RELOC_START | |
| 2264 | && code < BFD_RELOC_AARCH64_RELOC_END) | |
| 2265 | if (elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START].type) | |
| 2266 | return &elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START]; | |
| 2267 | ||
| 54757ed1 AP |
2268 | if (code == BFD_RELOC_AARCH64_NONE) |
| 2269 | return &elfNN_aarch64_howto_none; | |
| 2270 | ||
| a6bb11b2 YZ |
2271 | return NULL; |
| 2272 | } | |
| 2273 | ||
| a06ea964 | 2274 | static reloc_howto_type * |
| 0aa13fee | 2275 | elfNN_aarch64_howto_from_type (bfd *abfd, unsigned int r_type) |
| a06ea964 | 2276 | { |
| a6bb11b2 YZ |
2277 | bfd_reloc_code_real_type val; |
| 2278 | reloc_howto_type *howto; | |
| 2279 | ||
| cec5225b YZ |
2280 | #if ARCH_SIZE == 32 |
| 2281 | if (r_type > 256) | |
| 2282 | { | |
| 2283 | bfd_set_error (bfd_error_bad_value); | |
| 2284 | return NULL; | |
| 2285 | } | |
| 2286 | #endif | |
| 2287 | ||
| a6bb11b2 YZ |
2288 | if (r_type == R_AARCH64_NONE) |
| 2289 | return &elfNN_aarch64_howto_none; | |
| a06ea964 | 2290 | |
| 0aa13fee | 2291 | val = elfNN_aarch64_bfd_reloc_from_type (abfd, r_type); |
| a6bb11b2 | 2292 | howto = elfNN_aarch64_howto_from_bfd_reloc (val); |
| a06ea964 | 2293 | |
| a6bb11b2 YZ |
2294 | if (howto != NULL) |
| 2295 | return howto; | |
| a06ea964 | 2296 | |
| a06ea964 NC |
2297 | bfd_set_error (bfd_error_bad_value); |
| 2298 | return NULL; | |
| 2299 | } | |
| 2300 | ||
| 0a1b45a2 | 2301 | static bool |
| 0aa13fee | 2302 | elfNN_aarch64_info_to_howto (bfd *abfd, arelent *bfd_reloc, |
| a06ea964 NC |
2303 | Elf_Internal_Rela *elf_reloc) |
| 2304 | { | |
| 2305 | unsigned int r_type; | |
| 2306 | ||
| cec5225b | 2307 | r_type = ELFNN_R_TYPE (elf_reloc->r_info); |
| 0aa13fee | 2308 | bfd_reloc->howto = elfNN_aarch64_howto_from_type (abfd, r_type); |
| f3185997 NC |
2309 | |
| 2310 | if (bfd_reloc->howto == NULL) | |
| 2311 | { | |
| 2312 | /* xgettext:c-format */ | |
| 2313 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, r_type); | |
| 0a1b45a2 | 2314 | return false; |
| f3185997 | 2315 | } |
| 0a1b45a2 | 2316 | return true; |
| a06ea964 NC |
2317 | } |
| 2318 | ||
| a06ea964 | 2319 | static reloc_howto_type * |
| cec5225b | 2320 | elfNN_aarch64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| a06ea964 NC |
2321 | bfd_reloc_code_real_type code) |
| 2322 | { | |
| a6bb11b2 | 2323 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (code); |
| a06ea964 | 2324 | |
| a6bb11b2 YZ |
2325 | if (howto != NULL) |
| 2326 | return howto; | |
| a06ea964 NC |
2327 | |
| 2328 | bfd_set_error (bfd_error_bad_value); | |
| 2329 | return NULL; | |
| 2330 | } | |
| 2331 | ||
| 2332 | static reloc_howto_type * | |
| cec5225b | 2333 | elfNN_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| a06ea964 NC |
2334 | const char *r_name) |
| 2335 | { | |
| 2336 | unsigned int i; | |
| 2337 | ||
| a6bb11b2 YZ |
2338 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) |
| 2339 | if (elfNN_aarch64_howto_table[i].name != NULL | |
| 2340 | && strcasecmp (elfNN_aarch64_howto_table[i].name, r_name) == 0) | |
| 2341 | return &elfNN_aarch64_howto_table[i]; | |
| a06ea964 NC |
2342 | |
| 2343 | return NULL; | |
| 2344 | } | |
| 2345 | ||
| 07d6d2b8 AM |
2346 | #define TARGET_LITTLE_SYM aarch64_elfNN_le_vec |
| 2347 | #define TARGET_LITTLE_NAME "elfNN-littleaarch64" | |
| 2348 | #define TARGET_BIG_SYM aarch64_elfNN_be_vec | |
| 2349 | #define TARGET_BIG_NAME "elfNN-bigaarch64" | |
| a06ea964 | 2350 | |
| a06ea964 NC |
2351 | /* The linker script knows the section names for placement. |
| 2352 | The entry_names are used to do simple name mangling on the stubs. | |
| 2353 | Given a function name, and its type, the stub can be found. The | |
| 2354 | name can be changed. The only requirement is the %s be present. */ | |
| 2355 | #define STUB_ENTRY_NAME "__%s_veneer" | |
| 2356 | ||
| 2357 | /* The name of the dynamic interpreter. This is put in the .interp | |
| 2358 | section. */ | |
| 2359 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
| 2360 | ||
| 2361 | #define AARCH64_MAX_FWD_BRANCH_OFFSET \ | |
| 2362 | (((1 << 25) - 1) << 2) | |
| 2363 | #define AARCH64_MAX_BWD_BRANCH_OFFSET \ | |
| 2364 | (-((1 << 25) << 2)) | |
| 2365 | ||
| 2366 | #define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1) | |
| 2367 | #define AARCH64_MIN_ADRP_IMM (-(1 << 20)) | |
| 2368 | ||
| 2369 | static int | |
| 2370 | aarch64_valid_for_adrp_p (bfd_vma value, bfd_vma place) | |
| 2371 | { | |
| 2372 | bfd_signed_vma offset = (bfd_signed_vma) (PG (value) - PG (place)) >> 12; | |
| 2373 | return offset <= AARCH64_MAX_ADRP_IMM && offset >= AARCH64_MIN_ADRP_IMM; | |
| 2374 | } | |
| 2375 | ||
| 2376 | static int | |
| 2377 | aarch64_valid_branch_p (bfd_vma value, bfd_vma place) | |
| 2378 | { | |
| 2379 | bfd_signed_vma offset = (bfd_signed_vma) (value - place); | |
| 2380 | return (offset <= AARCH64_MAX_FWD_BRANCH_OFFSET | |
| 2381 | && offset >= AARCH64_MAX_BWD_BRANCH_OFFSET); | |
| 2382 | } | |
| 2383 | ||
| 2384 | static const uint32_t aarch64_adrp_branch_stub [] = | |
| 2385 | { | |
| 2386 | 0x90000010, /* adrp ip0, X */ | |
| 2387 | /* R_AARCH64_ADR_HI21_PCREL(X) */ | |
| 2388 | 0x91000210, /* add ip0, ip0, :lo12:X */ | |
| 2389 | /* R_AARCH64_ADD_ABS_LO12_NC(X) */ | |
| 2390 | 0xd61f0200, /* br ip0 */ | |
| 2391 | }; | |
| 2392 | ||
| 2393 | static const uint32_t aarch64_long_branch_stub[] = | |
| 2394 | { | |
| cec5225b | 2395 | #if ARCH_SIZE == 64 |
| a06ea964 | 2396 | 0x58000090, /* ldr ip0, 1f */ |
| cec5225b YZ |
2397 | #else |
| 2398 | 0x18000090, /* ldr wip0, 1f */ | |
| 2399 | #endif | |
| a06ea964 NC |
2400 | 0x10000011, /* adr ip1, #0 */ |
| 2401 | 0x8b110210, /* add ip0, ip0, ip1 */ | |
| 2402 | 0xd61f0200, /* br ip0 */ | |
| cec5225b YZ |
2403 | 0x00000000, /* 1: .xword or .word |
| 2404 | R_AARCH64_PRELNN(X) + 12 | |
| a06ea964 NC |
2405 | */ |
| 2406 | 0x00000000, | |
| 2407 | }; | |
| 2408 | ||
| 68fcca92 JW |
2409 | static const uint32_t aarch64_erratum_835769_stub[] = |
| 2410 | { | |
| 2411 | 0x00000000, /* Placeholder for multiply accumulate. */ | |
| 2412 | 0x14000000, /* b <label> */ | |
| 2413 | }; | |
| 2414 | ||
| 4106101c MS |
2415 | static const uint32_t aarch64_erratum_843419_stub[] = |
| 2416 | { | |
| 2417 | 0x00000000, /* Placeholder for LDR instruction. */ | |
| 2418 | 0x14000000, /* b <label> */ | |
| 2419 | }; | |
| 2420 | ||
| a06ea964 NC |
2421 | /* Section name for stubs is the associated section name plus this |
| 2422 | string. */ | |
| 2423 | #define STUB_SUFFIX ".stub" | |
| 2424 | ||
| cec5225b | 2425 | enum elf_aarch64_stub_type |
| a06ea964 NC |
2426 | { |
| 2427 | aarch64_stub_none, | |
| 2428 | aarch64_stub_adrp_branch, | |
| 2429 | aarch64_stub_long_branch, | |
| 68fcca92 | 2430 | aarch64_stub_erratum_835769_veneer, |
| 4106101c | 2431 | aarch64_stub_erratum_843419_veneer, |
| a06ea964 NC |
2432 | }; |
| 2433 | ||
| cec5225b | 2434 | struct elf_aarch64_stub_hash_entry |
| a06ea964 NC |
2435 | { |
| 2436 | /* Base hash table entry structure. */ | |
| 2437 | struct bfd_hash_entry root; | |
| 2438 | ||
| 2439 | /* The stub section. */ | |
| 2440 | asection *stub_sec; | |
| 2441 | ||
| 2442 | /* Offset within stub_sec of the beginning of this stub. */ | |
| 2443 | bfd_vma stub_offset; | |
| 2444 | ||
| 2445 | /* Given the symbol's value and its section we can determine its final | |
| 2446 | value when building the stubs (so the stub knows where to jump). */ | |
| 2447 | bfd_vma target_value; | |
| 2448 | asection *target_section; | |
| 2449 | ||
| cec5225b | 2450 | enum elf_aarch64_stub_type stub_type; |
| a06ea964 NC |
2451 | |
| 2452 | /* The symbol table entry, if any, that this was derived from. */ | |
| cec5225b | 2453 | struct elf_aarch64_link_hash_entry *h; |
| a06ea964 NC |
2454 | |
| 2455 | /* Destination symbol type */ | |
| 2456 | unsigned char st_type; | |
| 2457 | ||
| 2458 | /* Where this stub is being called from, or, in the case of combined | |
| 2459 | stub sections, the first input section in the group. */ | |
| 2460 | asection *id_sec; | |
| 2461 | ||
| 2462 | /* The name for the local symbol at the start of this stub. The | |
| 2463 | stub name in the hash table has to be unique; this does not, so | |
| 2464 | it can be friendlier. */ | |
| 2465 | char *output_name; | |
| 68fcca92 JW |
2466 | |
| 2467 | /* The instruction which caused this stub to be generated (only valid for | |
| 2468 | erratum 835769 workaround stubs at present). */ | |
| 2469 | uint32_t veneered_insn; | |
| 4106101c MS |
2470 | |
| 2471 | /* In an erratum 843419 workaround stub, the ADRP instruction offset. */ | |
| 2472 | bfd_vma adrp_offset; | |
| a06ea964 NC |
2473 | }; |
| 2474 | ||
| 2475 | /* Used to build a map of a section. This is required for mixed-endian | |
| 2476 | code/data. */ | |
| 2477 | ||
| cec5225b | 2478 | typedef struct elf_elf_section_map |
| a06ea964 NC |
2479 | { |
| 2480 | bfd_vma vma; | |
| 2481 | char type; | |
| 2482 | } | |
| cec5225b | 2483 | elf_aarch64_section_map; |
| a06ea964 NC |
2484 | |
| 2485 | ||
| 2486 | typedef struct _aarch64_elf_section_data | |
| 2487 | { | |
| 2488 | struct bfd_elf_section_data elf; | |
| 2489 | unsigned int mapcount; | |
| 2490 | unsigned int mapsize; | |
| cec5225b | 2491 | elf_aarch64_section_map *map; |
| a06ea964 NC |
2492 | } |
| 2493 | _aarch64_elf_section_data; | |
| 2494 | ||
| cec5225b | 2495 | #define elf_aarch64_section_data(sec) \ |
| a06ea964 NC |
2496 | ((_aarch64_elf_section_data *) elf_section_data (sec)) |
| 2497 | ||
| 4e8516b2 AP |
2498 | /* The size of the thread control block which is defined to be two pointers. */ |
| 2499 | #define TCB_SIZE (ARCH_SIZE/8)*2 | |
| a06ea964 NC |
2500 | |
| 2501 | struct elf_aarch64_local_symbol | |
| 2502 | { | |
| 2503 | unsigned int got_type; | |
| 2504 | bfd_signed_vma got_refcount; | |
| 2505 | bfd_vma got_offset; | |
| 2506 | ||
| 2507 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The | |
| 2508 | offset is from the end of the jump table and reserved entries | |
| 2509 | within the PLTGOT. | |
| 2510 | ||
| 2511 | The magic value (bfd_vma) -1 indicates that an offset has not be | |
| 2512 | allocated. */ | |
| 2513 | bfd_vma tlsdesc_got_jump_table_offset; | |
| 2514 | }; | |
| 2515 | ||
| 2516 | struct elf_aarch64_obj_tdata | |
| 2517 | { | |
| 2518 | struct elf_obj_tdata root; | |
| 2519 | ||
| 2520 | /* local symbol descriptors */ | |
| 2521 | struct elf_aarch64_local_symbol *locals; | |
| 2522 | ||
| 2523 | /* Zero to warn when linking objects with incompatible enum sizes. */ | |
| 2524 | int no_enum_size_warning; | |
| 2525 | ||
| 2526 | /* Zero to warn when linking objects with incompatible wchar_t sizes. */ | |
| 2527 | int no_wchar_size_warning; | |
| cd702818 SD |
2528 | |
| 2529 | /* All GNU_PROPERTY_AARCH64_FEATURE_1_AND properties. */ | |
| 2530 | uint32_t gnu_and_prop; | |
| 37c18eed SD |
2531 | |
| 2532 | /* Zero to warn when linking objects with incompatible | |
| 2533 | GNU_PROPERTY_AARCH64_FEATURE_1_BTI. */ | |
| 2534 | int no_bti_warn; | |
| 2535 | ||
| 2536 | /* PLT type based on security. */ | |
| 2537 | aarch64_plt_type plt_type; | |
| a06ea964 NC |
2538 | }; |
| 2539 | ||
| 2540 | #define elf_aarch64_tdata(bfd) \ | |
| 2541 | ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any) | |
| 2542 | ||
| cec5225b | 2543 | #define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals) |
| a06ea964 NC |
2544 | |
| 2545 | #define is_aarch64_elf(bfd) \ | |
| 2546 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
| 2547 | && elf_tdata (bfd) != NULL \ | |
| 2548 | && elf_object_id (bfd) == AARCH64_ELF_DATA) | |
| 2549 | ||
| 0a1b45a2 | 2550 | static bool |
| cec5225b | 2551 | elfNN_aarch64_mkobject (bfd *abfd) |
| a06ea964 NC |
2552 | { |
| 2553 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_aarch64_obj_tdata), | |
| 2554 | AARCH64_ELF_DATA); | |
| 2555 | } | |
| 2556 | ||
| cec5225b YZ |
2557 | #define elf_aarch64_hash_entry(ent) \ |
| 2558 | ((struct elf_aarch64_link_hash_entry *)(ent)) | |
| a06ea964 NC |
2559 | |
| 2560 | #define GOT_UNKNOWN 0 | |
| 2561 | #define GOT_NORMAL 1 | |
| 2562 | #define GOT_TLS_GD 2 | |
| 2563 | #define GOT_TLS_IE 4 | |
| 2564 | #define GOT_TLSDESC_GD 8 | |
| 2565 | ||
| 2566 | #define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD)) | |
| 2567 | ||
| 2568 | /* AArch64 ELF linker hash entry. */ | |
| cec5225b | 2569 | struct elf_aarch64_link_hash_entry |
| a06ea964 NC |
2570 | { |
| 2571 | struct elf_link_hash_entry root; | |
| 2572 | ||
| a06ea964 NC |
2573 | /* Since PLT entries have variable size, we need to record the |
| 2574 | index into .got.plt instead of recomputing it from the PLT | |
| 2575 | offset. */ | |
| 2576 | bfd_signed_vma plt_got_offset; | |
| 2577 | ||
| 2578 | /* Bit mask representing the type of GOT entry(s) if any required by | |
| 2579 | this symbol. */ | |
| 2580 | unsigned int got_type; | |
| 2581 | ||
| 90b7a5df FS |
2582 | /* TRUE if symbol is defined as a protected symbol. */ |
| 2583 | unsigned int def_protected : 1; | |
| 2584 | ||
| a06ea964 NC |
2585 | /* A pointer to the most recently used stub hash entry against this |
| 2586 | symbol. */ | |
| cec5225b | 2587 | struct elf_aarch64_stub_hash_entry *stub_cache; |
| a06ea964 NC |
2588 | |
| 2589 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset | |
| 2590 | is from the end of the jump table and reserved entries within the PLTGOT. | |
| 2591 | ||
| 2592 | The magic value (bfd_vma) -1 indicates that an offset has not | |
| 2593 | be allocated. */ | |
| 2594 | bfd_vma tlsdesc_got_jump_table_offset; | |
| 2595 | }; | |
| 2596 | ||
| 2597 | static unsigned int | |
| cec5225b | 2598 | elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry *h, |
| a06ea964 NC |
2599 | bfd *abfd, |
| 2600 | unsigned long r_symndx) | |
| 2601 | { | |
| 2602 | if (h) | |
| cec5225b | 2603 | return elf_aarch64_hash_entry (h)->got_type; |
| a06ea964 | 2604 | |
| cec5225b | 2605 | if (! elf_aarch64_locals (abfd)) |
| a06ea964 NC |
2606 | return GOT_UNKNOWN; |
| 2607 | ||
| cec5225b | 2608 | return elf_aarch64_locals (abfd)[r_symndx].got_type; |
| a06ea964 NC |
2609 | } |
| 2610 | ||
| a06ea964 | 2611 | /* Get the AArch64 elf linker hash table from a link_info structure. */ |
| cec5225b YZ |
2612 | #define elf_aarch64_hash_table(info) \ |
| 2613 | ((struct elf_aarch64_link_hash_table *) ((info)->hash)) | |
| a06ea964 NC |
2614 | |
| 2615 | #define aarch64_stub_hash_lookup(table, string, create, copy) \ | |
| cec5225b | 2616 | ((struct elf_aarch64_stub_hash_entry *) \ |
| a06ea964 NC |
2617 | bfd_hash_lookup ((table), (string), (create), (copy))) |
| 2618 | ||
| 2619 | /* AArch64 ELF linker hash table. */ | |
| cec5225b | 2620 | struct elf_aarch64_link_hash_table |
| a06ea964 NC |
2621 | { |
| 2622 | /* The main hash table. */ | |
| 2623 | struct elf_link_hash_table root; | |
| 2624 | ||
| 2625 | /* Nonzero to force PIC branch veneers. */ | |
| 2626 | int pic_veneer; | |
| 2627 | ||
| 68fcca92 JW |
2628 | /* Fix erratum 835769. */ |
| 2629 | int fix_erratum_835769; | |
| 2630 | ||
| 4106101c | 2631 | /* Fix erratum 843419. */ |
| 739b5c9c | 2632 | erratum_84319_opts fix_erratum_843419; |
| 4106101c | 2633 | |
| 1f56df9d JW |
2634 | /* Don't apply link-time values for dynamic relocations. */ |
| 2635 | int no_apply_dynamic_relocs; | |
| 2636 | ||
| a06ea964 NC |
2637 | /* The number of bytes in the initial entry in the PLT. */ |
| 2638 | bfd_size_type plt_header_size; | |
| 2639 | ||
| 37c18eed SD |
2640 | /* The bytes of the initial PLT entry. */ |
| 2641 | const bfd_byte *plt0_entry; | |
| 2642 | ||
| 2643 | /* The number of bytes in the subsequent PLT entries. */ | |
| a06ea964 NC |
2644 | bfd_size_type plt_entry_size; |
| 2645 | ||
| 37c18eed SD |
2646 | /* The bytes of the subsequent PLT entry. */ |
| 2647 | const bfd_byte *plt_entry; | |
| 2648 | ||
| a06ea964 NC |
2649 | /* For convenience in allocate_dynrelocs. */ |
| 2650 | bfd *obfd; | |
| 2651 | ||
| 2652 | /* The amount of space used by the reserved portion of the sgotplt | |
| 2653 | section, plus whatever space is used by the jump slots. */ | |
| 2654 | bfd_vma sgotplt_jump_table_size; | |
| 2655 | ||
| 2656 | /* The stub hash table. */ | |
| 2657 | struct bfd_hash_table stub_hash_table; | |
| 2658 | ||
| 2659 | /* Linker stub bfd. */ | |
| 2660 | bfd *stub_bfd; | |
| 2661 | ||
| 2662 | /* Linker call-backs. */ | |
| 2663 | asection *(*add_stub_section) (const char *, asection *); | |
| 2664 | void (*layout_sections_again) (void); | |
| 2665 | ||
| 2666 | /* Array to keep track of which stub sections have been created, and | |
| 2667 | information on stub grouping. */ | |
| 2668 | struct map_stub | |
| 2669 | { | |
| 2670 | /* This is the section to which stubs in the group will be | |
| 2671 | attached. */ | |
| 2672 | asection *link_sec; | |
| 2673 | /* The stub section. */ | |
| 2674 | asection *stub_sec; | |
| 2675 | } *stub_group; | |
| 2676 | ||
| cec5225b | 2677 | /* Assorted information used by elfNN_aarch64_size_stubs. */ |
| a06ea964 | 2678 | unsigned int bfd_count; |
| 7292b3ac | 2679 | unsigned int top_index; |
| a06ea964 NC |
2680 | asection **input_list; |
| 2681 | ||
| 823710d5 SN |
2682 | /* JUMP_SLOT relocs for variant PCS symbols may be present. */ |
| 2683 | int variant_pcs; | |
| 2684 | ||
| 37c18eed SD |
2685 | /* The number of bytes in the PLT enty for the TLS descriptor. */ |
| 2686 | bfd_size_type tlsdesc_plt_entry_size; | |
| 2687 | ||
| 1419bbe5 WN |
2688 | /* Used by local STT_GNU_IFUNC symbols. */ |
| 2689 | htab_t loc_hash_table; | |
| 2690 | void * loc_hash_memory; | |
| a06ea964 NC |
2691 | }; |
| 2692 | ||
| a06ea964 NC |
2693 | /* Create an entry in an AArch64 ELF linker hash table. */ |
| 2694 | ||
| 2695 | static struct bfd_hash_entry * | |
| cec5225b | 2696 | elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry, |
| a06ea964 NC |
2697 | struct bfd_hash_table *table, |
| 2698 | const char *string) | |
| 2699 | { | |
| cec5225b YZ |
2700 | struct elf_aarch64_link_hash_entry *ret = |
| 2701 | (struct elf_aarch64_link_hash_entry *) entry; | |
| a06ea964 NC |
2702 | |
| 2703 | /* Allocate the structure if it has not already been allocated by a | |
| 2704 | subclass. */ | |
| 2705 | if (ret == NULL) | |
| 2706 | ret = bfd_hash_allocate (table, | |
| cec5225b | 2707 | sizeof (struct elf_aarch64_link_hash_entry)); |
| a06ea964 NC |
2708 | if (ret == NULL) |
| 2709 | return (struct bfd_hash_entry *) ret; | |
| 2710 | ||
| 2711 | /* Call the allocation method of the superclass. */ | |
| cec5225b | 2712 | ret = ((struct elf_aarch64_link_hash_entry *) |
| a06ea964 NC |
2713 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
| 2714 | table, string)); | |
| 2715 | if (ret != NULL) | |
| 2716 | { | |
| a06ea964 | 2717 | ret->got_type = GOT_UNKNOWN; |
| 7c24bdc5 | 2718 | ret->def_protected = 0; |
| a06ea964 NC |
2719 | ret->plt_got_offset = (bfd_vma) - 1; |
| 2720 | ret->stub_cache = NULL; | |
| 2721 | ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
| 2722 | } | |
| 2723 | ||
| 2724 | return (struct bfd_hash_entry *) ret; | |
| 2725 | } | |
| 2726 | ||
| 2727 | /* Initialize an entry in the stub hash table. */ | |
| 2728 | ||
| 2729 | static struct bfd_hash_entry * | |
| 2730 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
| 2731 | struct bfd_hash_table *table, const char *string) | |
| 2732 | { | |
| 2733 | /* Allocate the structure if it has not already been allocated by a | |
| 2734 | subclass. */ | |
| 2735 | if (entry == NULL) | |
| 2736 | { | |
| 2737 | entry = bfd_hash_allocate (table, | |
| 2738 | sizeof (struct | |
| cec5225b | 2739 | elf_aarch64_stub_hash_entry)); |
| a06ea964 NC |
2740 | if (entry == NULL) |
| 2741 | return entry; | |
| 2742 | } | |
| 2743 | ||
| 2744 | /* Call the allocation method of the superclass. */ | |
| 2745 | entry = bfd_hash_newfunc (entry, table, string); | |
| 2746 | if (entry != NULL) | |
| 2747 | { | |
| cec5225b | 2748 | struct elf_aarch64_stub_hash_entry *eh; |
| a06ea964 NC |
2749 | |
| 2750 | /* Initialize the local fields. */ | |
| cec5225b | 2751 | eh = (struct elf_aarch64_stub_hash_entry *) entry; |
| 4106101c | 2752 | eh->adrp_offset = 0; |
| a06ea964 NC |
2753 | eh->stub_sec = NULL; |
| 2754 | eh->stub_offset = 0; | |
| 2755 | eh->target_value = 0; | |
| 2756 | eh->target_section = NULL; | |
| 2757 | eh->stub_type = aarch64_stub_none; | |
| 2758 | eh->h = NULL; | |
| 2759 | eh->id_sec = NULL; | |
| 2760 | } | |
| 2761 | ||
| 2762 | return entry; | |
| 2763 | } | |
| 2764 | ||
| 1419bbe5 WN |
2765 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry |
| 2766 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
| 2767 | as global symbol. We reuse indx and dynstr_index for local symbol | |
| 2768 | hash since they aren't used by global symbols in this backend. */ | |
| 2769 | ||
| 2770 | static hashval_t | |
| 2771 | elfNN_aarch64_local_htab_hash (const void *ptr) | |
| 2772 | { | |
| 2773 | struct elf_link_hash_entry *h | |
| 2774 | = (struct elf_link_hash_entry *) ptr; | |
| 2775 | return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); | |
| 2776 | } | |
| 2777 | ||
| 2778 | /* Compare local hash entries. */ | |
| 2779 | ||
| 2780 | static int | |
| 2781 | elfNN_aarch64_local_htab_eq (const void *ptr1, const void *ptr2) | |
| 2782 | { | |
| 2783 | struct elf_link_hash_entry *h1 | |
| 2784 | = (struct elf_link_hash_entry *) ptr1; | |
| 2785 | struct elf_link_hash_entry *h2 | |
| 2786 | = (struct elf_link_hash_entry *) ptr2; | |
| 2787 | ||
| 2788 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
| 2789 | } | |
| 2790 | ||
| 2791 | /* Find and/or create a hash entry for local symbol. */ | |
| 2792 | ||
| 2793 | static struct elf_link_hash_entry * | |
| 2794 | elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table *htab, | |
| 2795 | bfd *abfd, const Elf_Internal_Rela *rel, | |
| 0a1b45a2 | 2796 | bool create) |
| 1419bbe5 WN |
2797 | { |
| 2798 | struct elf_aarch64_link_hash_entry e, *ret; | |
| 2799 | asection *sec = abfd->sections; | |
| 2800 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, | |
| 2801 | ELFNN_R_SYM (rel->r_info)); | |
| 2802 | void **slot; | |
| 2803 | ||
| 2804 | e.root.indx = sec->id; | |
| 2805 | e.root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
| 2806 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, | |
| 2807 | create ? INSERT : NO_INSERT); | |
| 2808 | ||
| 2809 | if (!slot) | |
| 2810 | return NULL; | |
| 2811 | ||
| 2812 | if (*slot) | |
| 2813 | { | |
| 2814 | ret = (struct elf_aarch64_link_hash_entry *) *slot; | |
| 2815 | return &ret->root; | |
| 2816 | } | |
| 2817 | ||
| 2818 | ret = (struct elf_aarch64_link_hash_entry *) | |
| 2819 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, | |
| 2820 | sizeof (struct elf_aarch64_link_hash_entry)); | |
| 2821 | if (ret) | |
| 2822 | { | |
| 2823 | memset (ret, 0, sizeof (*ret)); | |
| 2824 | ret->root.indx = sec->id; | |
| 2825 | ret->root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
| 2826 | ret->root.dynindx = -1; | |
| 2827 | *slot = ret; | |
| 2828 | } | |
| 2829 | return &ret->root; | |
| 2830 | } | |
| a06ea964 NC |
2831 | |
| 2832 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
| 2833 | ||
| 2834 | static void | |
| cec5225b | 2835 | elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info, |
| a06ea964 NC |
2836 | struct elf_link_hash_entry *dir, |
| 2837 | struct elf_link_hash_entry *ind) | |
| 2838 | { | |
| cec5225b | 2839 | struct elf_aarch64_link_hash_entry *edir, *eind; |
| a06ea964 | 2840 | |
| cec5225b YZ |
2841 | edir = (struct elf_aarch64_link_hash_entry *) dir; |
| 2842 | eind = (struct elf_aarch64_link_hash_entry *) ind; | |
| a06ea964 | 2843 | |
| a06ea964 NC |
2844 | if (ind->root.type == bfd_link_hash_indirect) |
| 2845 | { | |
| 2846 | /* Copy over PLT info. */ | |
| 2847 | if (dir->got.refcount <= 0) | |
| 2848 | { | |
| 2849 | edir->got_type = eind->got_type; | |
| 2850 | eind->got_type = GOT_UNKNOWN; | |
| 2851 | } | |
| 2852 | } | |
| 2853 | ||
| 2854 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
| 2855 | } | |
| 2856 | ||
| 823710d5 SN |
2857 | /* Merge non-visibility st_other attributes. */ |
| 2858 | ||
| 2859 | static void | |
| 2860 | elfNN_aarch64_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
| 5160d0f3 | 2861 | unsigned int st_other, |
| 90b7a5df | 2862 | bool definition, |
| 0a1b45a2 | 2863 | bool dynamic ATTRIBUTE_UNUSED) |
| 823710d5 | 2864 | { |
| 90b7a5df FS |
2865 | if (definition) |
| 2866 | { | |
| 2867 | struct elf_aarch64_link_hash_entry *eh | |
| 2868 | = (struct elf_aarch64_link_hash_entry *)h; | |
| 2869 | eh->def_protected = ELF_ST_VISIBILITY (st_other) == STV_PROTECTED; | |
| 2870 | } | |
| 2871 | ||
| 5160d0f3 | 2872 | unsigned int isym_sto = st_other & ~ELF_ST_VISIBILITY (-1); |
| 823710d5 SN |
2873 | unsigned int h_sto = h->other & ~ELF_ST_VISIBILITY (-1); |
| 2874 | ||
| 2875 | if (isym_sto == h_sto) | |
| 2876 | return; | |
| 2877 | ||
| 2878 | if (isym_sto & ~STO_AARCH64_VARIANT_PCS) | |
| 2879 | /* Not fatal, this callback cannot fail. */ | |
| 2880 | _bfd_error_handler (_("unknown attribute for symbol `%s': 0x%02x"), | |
| 2881 | h->root.root.string, isym_sto); | |
| 2882 | ||
| 2883 | /* Note: Ideally we would warn about any attribute mismatch, but | |
| 2884 | this api does not allow that without substantial changes. */ | |
| 2885 | if (isym_sto & STO_AARCH64_VARIANT_PCS) | |
| 2886 | h->other |= STO_AARCH64_VARIANT_PCS; | |
| 2887 | } | |
| 2888 | ||
| 68faa637 AM |
2889 | /* Destroy an AArch64 elf linker hash table. */ |
| 2890 | ||
| 2891 | static void | |
| d495ab0d | 2892 | elfNN_aarch64_link_hash_table_free (bfd *obfd) |
| 68faa637 AM |
2893 | { |
| 2894 | struct elf_aarch64_link_hash_table *ret | |
| d495ab0d | 2895 | = (struct elf_aarch64_link_hash_table *) obfd->link.hash; |
| 68faa637 AM |
2896 | |
| 2897 | if (ret->loc_hash_table) | |
| 2898 | htab_delete (ret->loc_hash_table); | |
| 2899 | if (ret->loc_hash_memory) | |
| 2900 | objalloc_free ((struct objalloc *) ret->loc_hash_memory); | |
| 2901 | ||
| 2902 | bfd_hash_table_free (&ret->stub_hash_table); | |
| d495ab0d | 2903 | _bfd_elf_link_hash_table_free (obfd); |
| 68faa637 AM |
2904 | } |
| 2905 | ||
| a06ea964 NC |
2906 | /* Create an AArch64 elf linker hash table. */ |
| 2907 | ||
| 2908 | static struct bfd_link_hash_table * | |
| cec5225b | 2909 | elfNN_aarch64_link_hash_table_create (bfd *abfd) |
| a06ea964 | 2910 | { |
| cec5225b | 2911 | struct elf_aarch64_link_hash_table *ret; |
| 986f0783 | 2912 | size_t amt = sizeof (struct elf_aarch64_link_hash_table); |
| a06ea964 | 2913 | |
| 7bf52ea2 | 2914 | ret = bfd_zmalloc (amt); |
| a06ea964 NC |
2915 | if (ret == NULL) |
| 2916 | return NULL; | |
| 2917 | ||
| 2918 | if (!_bfd_elf_link_hash_table_init | |
| cec5225b YZ |
2919 | (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc, |
| 2920 | sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA)) | |
| a06ea964 NC |
2921 | { |
| 2922 | free (ret); | |
| 2923 | return NULL; | |
| 2924 | } | |
| 2925 | ||
| a06ea964 | 2926 | ret->plt_header_size = PLT_ENTRY_SIZE; |
| 37c18eed | 2927 | ret->plt0_entry = elfNN_aarch64_small_plt0_entry; |
| a06ea964 | 2928 | ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE; |
| 37c18eed SD |
2929 | ret->plt_entry = elfNN_aarch64_small_plt_entry; |
| 2930 | ret->tlsdesc_plt_entry_size = PLT_TLSDESC_ENTRY_SIZE; | |
| a06ea964 | 2931 | ret->obfd = abfd; |
| 9bcc30e4 | 2932 | ret->root.tlsdesc_got = (bfd_vma) - 1; |
| a06ea964 NC |
2933 | |
| 2934 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc, | |
| cec5225b | 2935 | sizeof (struct elf_aarch64_stub_hash_entry))) |
| a06ea964 | 2936 | { |
| d495ab0d | 2937 | _bfd_elf_link_hash_table_free (abfd); |
| a06ea964 NC |
2938 | return NULL; |
| 2939 | } | |
| 2940 | ||
| 1419bbe5 WN |
2941 | ret->loc_hash_table = htab_try_create (1024, |
| 2942 | elfNN_aarch64_local_htab_hash, | |
| 2943 | elfNN_aarch64_local_htab_eq, | |
| 2944 | NULL); | |
| 2945 | ret->loc_hash_memory = objalloc_create (); | |
| 2946 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
| 2947 | { | |
| d495ab0d | 2948 | elfNN_aarch64_link_hash_table_free (abfd); |
| 1419bbe5 WN |
2949 | return NULL; |
| 2950 | } | |
| d495ab0d | 2951 | ret->root.root.hash_table_free = elfNN_aarch64_link_hash_table_free; |
| 1419bbe5 | 2952 | |
| a06ea964 NC |
2953 | return &ret->root.root; |
| 2954 | } | |
| 2955 | ||
| 1d75a8e2 NC |
2956 | /* Perform relocation R_TYPE. Returns TRUE upon success, FALSE otherwise. */ |
| 2957 | ||
| 0a1b45a2 | 2958 | static bool |
| a06ea964 NC |
2959 | aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section, |
| 2960 | bfd_vma offset, bfd_vma value) | |
| 2961 | { | |
| 2962 | reloc_howto_type *howto; | |
| 2963 | bfd_vma place; | |
| 2964 | ||
| 0aa13fee | 2965 | howto = elfNN_aarch64_howto_from_type (input_bfd, r_type); |
| a06ea964 NC |
2966 | place = (input_section->output_section->vma + input_section->output_offset |
| 2967 | + offset); | |
| caed7120 | 2968 | |
| 0aa13fee | 2969 | r_type = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
| 652afeef | 2970 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, r_type, place, |
| 0a1b45a2 | 2971 | value, 0, false); |
| caed7120 YZ |
2972 | return _bfd_aarch64_elf_put_addend (input_bfd, |
| 2973 | input_section->contents + offset, r_type, | |
| 1d75a8e2 | 2974 | howto, value) == bfd_reloc_ok; |
| a06ea964 NC |
2975 | } |
| 2976 | ||
| cec5225b | 2977 | static enum elf_aarch64_stub_type |
| a06ea964 NC |
2978 | aarch64_select_branch_stub (bfd_vma value, bfd_vma place) |
| 2979 | { | |
| 2980 | if (aarch64_valid_for_adrp_p (value, place)) | |
| 2981 | return aarch64_stub_adrp_branch; | |
| 2982 | return aarch64_stub_long_branch; | |
| 2983 | } | |
| 2984 | ||
| 2985 | /* Determine the type of stub needed, if any, for a call. */ | |
| 2986 | ||
| cec5225b | 2987 | static enum elf_aarch64_stub_type |
| 9a228467 | 2988 | aarch64_type_of_stub (asection *input_sec, |
| a06ea964 | 2989 | const Elf_Internal_Rela *rel, |
| f678ded7 | 2990 | asection *sym_sec, |
| a06ea964 | 2991 | unsigned char st_type, |
| a06ea964 NC |
2992 | bfd_vma destination) |
| 2993 | { | |
| 2994 | bfd_vma location; | |
| 2995 | bfd_signed_vma branch_offset; | |
| 2996 | unsigned int r_type; | |
| cec5225b | 2997 | enum elf_aarch64_stub_type stub_type = aarch64_stub_none; |
| a06ea964 | 2998 | |
| f678ded7 | 2999 | if (st_type != STT_FUNC |
| 2f340668 | 3000 | && (sym_sec == input_sec)) |
| a06ea964 NC |
3001 | return stub_type; |
| 3002 | ||
| a06ea964 NC |
3003 | /* Determine where the call point is. */ |
| 3004 | location = (input_sec->output_offset | |
| 3005 | + input_sec->output_section->vma + rel->r_offset); | |
| 3006 | ||
| 3007 | branch_offset = (bfd_signed_vma) (destination - location); | |
| 3008 | ||
| cec5225b | 3009 | r_type = ELFNN_R_TYPE (rel->r_info); |
| a06ea964 NC |
3010 | |
| 3011 | /* We don't want to redirect any old unconditional jump in this way, | |
| 3012 | only one which is being used for a sibcall, where it is | |
| 3013 | acceptable for the IP0 and IP1 registers to be clobbered. */ | |
| a6bb11b2 | 3014 | if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26)) |
| a06ea964 NC |
3015 | && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET |
| 3016 | || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET)) | |
| 3017 | { | |
| 3018 | stub_type = aarch64_stub_long_branch; | |
| 3019 | } | |
| 3020 | ||
| 3021 | return stub_type; | |
| 3022 | } | |
| 3023 | ||
| 3024 | /* Build a name for an entry in the stub hash table. */ | |
| 3025 | ||
| 3026 | static char * | |
| cec5225b | 3027 | elfNN_aarch64_stub_name (const asection *input_section, |
| a06ea964 | 3028 | const asection *sym_sec, |
| cec5225b | 3029 | const struct elf_aarch64_link_hash_entry *hash, |
| a06ea964 NC |
3030 | const Elf_Internal_Rela *rel) |
| 3031 | { | |
| 3032 | char *stub_name; | |
| 3033 | bfd_size_type len; | |
| 3034 | ||
| 3035 | if (hash) | |
| 3036 | { | |
| 3037 | len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1; | |
| 3038 | stub_name = bfd_malloc (len); | |
| 3039 | if (stub_name != NULL) | |
| b8281767 | 3040 | snprintf (stub_name, len, "%08x_%s+%" PRIx64, |
| a06ea964 NC |
3041 | (unsigned int) input_section->id, |
| 3042 | hash->root.root.root.string, | |
| b8281767 | 3043 | (uint64_t) rel->r_addend); |
| a06ea964 NC |
3044 | } |
| 3045 | else | |
| 3046 | { | |
| 3047 | len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1; | |
| 3048 | stub_name = bfd_malloc (len); | |
| 3049 | if (stub_name != NULL) | |
| b8281767 | 3050 | snprintf (stub_name, len, "%08x_%x:%x+%" PRIx64, |
| a06ea964 NC |
3051 | (unsigned int) input_section->id, |
| 3052 | (unsigned int) sym_sec->id, | |
| cec5225b | 3053 | (unsigned int) ELFNN_R_SYM (rel->r_info), |
| b8281767 | 3054 | (uint64_t) rel->r_addend); |
| a06ea964 NC |
3055 | } |
| 3056 | ||
| 3057 | return stub_name; | |
| 3058 | } | |
| 3059 | ||
| 7f784814 JW |
3060 | /* Return TRUE if symbol H should be hashed in the `.gnu.hash' section. For |
| 3061 | executable PLT slots where the executable never takes the address of those | |
| 3062 | functions, the function symbols are not added to the hash table. */ | |
| 3063 | ||
| 0a1b45a2 | 3064 | static bool |
| 7f784814 JW |
3065 | elf_aarch64_hash_symbol (struct elf_link_hash_entry *h) |
| 3066 | { | |
| 3067 | if (h->plt.offset != (bfd_vma) -1 | |
| 3068 | && !h->def_regular | |
| 3069 | && !h->pointer_equality_needed) | |
| 0a1b45a2 | 3070 | return false; |
| 7f784814 JW |
3071 | |
| 3072 | return _bfd_elf_hash_symbol (h); | |
| 3073 | } | |
| 3074 | ||
| 3075 | ||
| a06ea964 NC |
3076 | /* Look up an entry in the stub hash. Stub entries are cached because |
| 3077 | creating the stub name takes a bit of time. */ | |
| 3078 | ||
| cec5225b YZ |
3079 | static struct elf_aarch64_stub_hash_entry * |
| 3080 | elfNN_aarch64_get_stub_entry (const asection *input_section, | |
| a06ea964 NC |
3081 | const asection *sym_sec, |
| 3082 | struct elf_link_hash_entry *hash, | |
| 3083 | const Elf_Internal_Rela *rel, | |
| cec5225b | 3084 | struct elf_aarch64_link_hash_table *htab) |
| a06ea964 | 3085 | { |
| cec5225b YZ |
3086 | struct elf_aarch64_stub_hash_entry *stub_entry; |
| 3087 | struct elf_aarch64_link_hash_entry *h = | |
| 3088 | (struct elf_aarch64_link_hash_entry *) hash; | |
| a06ea964 NC |
3089 | const asection *id_sec; |
| 3090 | ||
| 3091 | if ((input_section->flags & SEC_CODE) == 0) | |
| 3092 | return NULL; | |
| 3093 | ||
| 3094 | /* If this input section is part of a group of sections sharing one | |
| 3095 | stub section, then use the id of the first section in the group. | |
| 3096 | Stub names need to include a section id, as there may well be | |
| 3097 | more than one stub used to reach say, printf, and we need to | |
| 3098 | distinguish between them. */ | |
| 3099 | id_sec = htab->stub_group[input_section->id].link_sec; | |
| 3100 | ||
| 3101 | if (h != NULL && h->stub_cache != NULL | |
| 3102 | && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec) | |
| 3103 | { | |
| 3104 | stub_entry = h->stub_cache; | |
| 3105 | } | |
| 3106 | else | |
| 3107 | { | |
| 3108 | char *stub_name; | |
| 3109 | ||
| cec5225b | 3110 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel); |
| a06ea964 NC |
3111 | if (stub_name == NULL) |
| 3112 | return NULL; | |
| 3113 | ||
| 3114 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
| 0a1b45a2 | 3115 | stub_name, false, false); |
| a06ea964 NC |
3116 | if (h != NULL) |
| 3117 | h->stub_cache = stub_entry; | |
| 3118 | ||
| 3119 | free (stub_name); | |
| 3120 | } | |
| 3121 | ||
| 3122 | return stub_entry; | |
| 3123 | } | |
| 3124 | ||
| a06ea964 | 3125 | |
| 66585675 MS |
3126 | /* Create a stub section. */ |
| 3127 | ||
| 3128 | static asection * | |
| 3129 | _bfd_aarch64_create_stub_section (asection *section, | |
| 3130 | struct elf_aarch64_link_hash_table *htab) | |
| 3131 | { | |
| 3132 | size_t namelen; | |
| 3133 | bfd_size_type len; | |
| 3134 | char *s_name; | |
| 3135 | ||
| 3136 | namelen = strlen (section->name); | |
| 3137 | len = namelen + sizeof (STUB_SUFFIX); | |
| 3138 | s_name = bfd_alloc (htab->stub_bfd, len); | |
| 3139 | if (s_name == NULL) | |
| 3140 | return NULL; | |
| 3141 | ||
| 3142 | memcpy (s_name, section->name, namelen); | |
| 3143 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
| 3144 | return (*htab->add_stub_section) (s_name, section); | |
| 3145 | } | |
| 3146 | ||
| 3147 | ||
| fc6d53be MS |
3148 | /* Find or create a stub section for a link section. |
| 3149 | ||
| 3150 | Fix or create the stub section used to collect stubs attached to | |
| 3151 | the specified link section. */ | |
| 3152 | ||
| 3153 | static asection * | |
| 3154 | _bfd_aarch64_get_stub_for_link_section (asection *link_section, | |
| 3155 | struct elf_aarch64_link_hash_table *htab) | |
| 3156 | { | |
| 3157 | if (htab->stub_group[link_section->id].stub_sec == NULL) | |
| 3158 | htab->stub_group[link_section->id].stub_sec | |
| 3159 | = _bfd_aarch64_create_stub_section (link_section, htab); | |
| 3160 | return htab->stub_group[link_section->id].stub_sec; | |
| 3161 | } | |
| 3162 | ||
| 3163 | ||
| ef857521 MS |
3164 | /* Find or create a stub section in the stub group for an input |
| 3165 | section. */ | |
| 3166 | ||
| 3167 | static asection * | |
| 3168 | _bfd_aarch64_create_or_find_stub_sec (asection *section, | |
| 3169 | struct elf_aarch64_link_hash_table *htab) | |
| a06ea964 | 3170 | { |
| fc6d53be MS |
3171 | asection *link_sec = htab->stub_group[section->id].link_sec; |
| 3172 | return _bfd_aarch64_get_stub_for_link_section (link_sec, htab); | |
| ef857521 MS |
3173 | } |
| 3174 | ||
| 3175 | ||
| 3176 | /* Add a new stub entry in the stub group associated with an input | |
| 3177 | section to the stub hash. Not all fields of the new stub entry are | |
| 3178 | initialised. */ | |
| 3179 | ||
| 3180 | static struct elf_aarch64_stub_hash_entry * | |
| 3181 | _bfd_aarch64_add_stub_entry_in_group (const char *stub_name, | |
| 3182 | asection *section, | |
| 3183 | struct elf_aarch64_link_hash_table *htab) | |
| 3184 | { | |
| 3185 | asection *link_sec; | |
| 3186 | asection *stub_sec; | |
| 3187 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
| 3188 | ||
| 3189 | link_sec = htab->stub_group[section->id].link_sec; | |
| 3190 | stub_sec = _bfd_aarch64_create_or_find_stub_sec (section, htab); | |
| 3191 | ||
| a06ea964 NC |
3192 | /* Enter this entry into the linker stub hash table. */ |
| 3193 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
| 0a1b45a2 | 3194 | true, false); |
| a06ea964 NC |
3195 | if (stub_entry == NULL) |
| 3196 | { | |
| 695344c0 | 3197 | /* xgettext:c-format */ |
| 871b3ab2 | 3198 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
| 4eca0228 | 3199 | section->owner, stub_name); |
| a06ea964 NC |
3200 | return NULL; |
| 3201 | } | |
| 3202 | ||
| 3203 | stub_entry->stub_sec = stub_sec; | |
| 3204 | stub_entry->stub_offset = 0; | |
| 3205 | stub_entry->id_sec = link_sec; | |
| 3206 | ||
| 3207 | return stub_entry; | |
| 3208 | } | |
| 3209 | ||
| 4106101c MS |
3210 | /* Add a new stub entry in the final stub section to the stub hash. |
| 3211 | Not all fields of the new stub entry are initialised. */ | |
| 3212 | ||
| 3213 | static struct elf_aarch64_stub_hash_entry * | |
| 3214 | _bfd_aarch64_add_stub_entry_after (const char *stub_name, | |
| 3215 | asection *link_section, | |
| 3216 | struct elf_aarch64_link_hash_table *htab) | |
| 3217 | { | |
| 3218 | asection *stub_sec; | |
| 3219 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
| 3220 | ||
| 739b5c9c TC |
3221 | stub_sec = NULL; |
| 3222 | /* Only create the actual stub if we will end up needing it. */ | |
| 3223 | if (htab->fix_erratum_843419 & ERRAT_ADRP) | |
| 3224 | stub_sec = _bfd_aarch64_get_stub_for_link_section (link_section, htab); | |
| 4106101c | 3225 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, |
| 0a1b45a2 | 3226 | true, false); |
| 4106101c MS |
3227 | if (stub_entry == NULL) |
| 3228 | { | |
| 4eca0228 | 3229 | _bfd_error_handler (_("cannot create stub entry %s"), stub_name); |
| 4106101c MS |
3230 | return NULL; |
| 3231 | } | |
| 3232 | ||
| 3233 | stub_entry->stub_sec = stub_sec; | |
| 3234 | stub_entry->stub_offset = 0; | |
| 3235 | stub_entry->id_sec = link_section; | |
| 3236 | ||
| 3237 | return stub_entry; | |
| 3238 | } | |
| 3239 | ||
| 3240 | ||
| 0a1b45a2 | 3241 | static bool |
| a06ea964 | 3242 | aarch64_build_one_stub (struct bfd_hash_entry *gen_entry, |
| abf874aa | 3243 | void *in_arg) |
| a06ea964 | 3244 | { |
| cec5225b | 3245 | struct elf_aarch64_stub_hash_entry *stub_entry; |
| a06ea964 NC |
3246 | asection *stub_sec; |
| 3247 | bfd *stub_bfd; | |
| 3248 | bfd_byte *loc; | |
| 3249 | bfd_vma sym_value; | |
| 68fcca92 JW |
3250 | bfd_vma veneered_insn_loc; |
| 3251 | bfd_vma veneer_entry_loc; | |
| 3252 | bfd_signed_vma branch_offset = 0; | |
| a06ea964 NC |
3253 | unsigned int template_size; |
| 3254 | const uint32_t *template; | |
| 3255 | unsigned int i; | |
| abf874aa | 3256 | struct bfd_link_info *info; |
| a06ea964 NC |
3257 | |
| 3258 | /* Massage our args to the form they really have. */ | |
| cec5225b | 3259 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
| a06ea964 | 3260 | |
| abf874aa CL |
3261 | info = (struct bfd_link_info *) in_arg; |
| 3262 | ||
| 3263 | /* Fail if the target section could not be assigned to an output | |
| 3264 | section. The user should fix his linker script. */ | |
| 3265 | if (stub_entry->target_section->output_section == NULL | |
| 3266 | && info->non_contiguous_regions) | |
| c63d4862 | 3267 | info->callbacks->einfo (_("%F%P: Could not assign `%pA' to an output section. " |
| 53215f21 CL |
3268 | "Retry without " |
| 3269 | "--enable-non-contiguous-regions.\n"), | |
| 3270 | stub_entry->target_section); | |
| abf874aa | 3271 | |
| a06ea964 NC |
3272 | stub_sec = stub_entry->stub_sec; |
| 3273 | ||
| 3274 | /* Make a note of the offset within the stubs for this entry. */ | |
| 3275 | stub_entry->stub_offset = stub_sec->size; | |
| 3276 | loc = stub_sec->contents + stub_entry->stub_offset; | |
| 3277 | ||
| 3278 | stub_bfd = stub_sec->owner; | |
| 3279 | ||
| 3280 | /* This is the address of the stub destination. */ | |
| 3281 | sym_value = (stub_entry->target_value | |
| 3282 | + stub_entry->target_section->output_offset | |
| 3283 | + stub_entry->target_section->output_section->vma); | |
| 3284 | ||
| 3285 | if (stub_entry->stub_type == aarch64_stub_long_branch) | |
| 3286 | { | |
| 3287 | bfd_vma place = (stub_entry->stub_offset + stub_sec->output_section->vma | |
| 3288 | + stub_sec->output_offset); | |
| 3289 | ||
| 3290 | /* See if we can relax the stub. */ | |
| 3291 | if (aarch64_valid_for_adrp_p (sym_value, place)) | |
| 3292 | stub_entry->stub_type = aarch64_select_branch_stub (sym_value, place); | |
| 3293 | } | |
| 3294 | ||
| 3295 | switch (stub_entry->stub_type) | |
| 3296 | { | |
| 3297 | case aarch64_stub_adrp_branch: | |
| 3298 | template = aarch64_adrp_branch_stub; | |
| 3299 | template_size = sizeof (aarch64_adrp_branch_stub); | |
| 3300 | break; | |
| 3301 | case aarch64_stub_long_branch: | |
| 3302 | template = aarch64_long_branch_stub; | |
| 3303 | template_size = sizeof (aarch64_long_branch_stub); | |
| 3304 | break; | |
| 68fcca92 JW |
3305 | case aarch64_stub_erratum_835769_veneer: |
| 3306 | template = aarch64_erratum_835769_stub; | |
| 3307 | template_size = sizeof (aarch64_erratum_835769_stub); | |
| 3308 | break; | |
| 4106101c MS |
3309 | case aarch64_stub_erratum_843419_veneer: |
| 3310 | template = aarch64_erratum_843419_stub; | |
| 3311 | template_size = sizeof (aarch64_erratum_843419_stub); | |
| 3312 | break; | |
| a06ea964 | 3313 | default: |
| 8e2fe09f | 3314 | abort (); |
| a06ea964 NC |
3315 | } |
| 3316 | ||
| 3317 | for (i = 0; i < (template_size / sizeof template[0]); i++) | |
| 3318 | { | |
| 3319 | bfd_putl32 (template[i], loc); | |
| 3320 | loc += 4; | |
| 3321 | } | |
| 3322 | ||
| 3323 | template_size = (template_size + 7) & ~7; | |
| 3324 | stub_sec->size += template_size; | |
| 3325 | ||
| 3326 | switch (stub_entry->stub_type) | |
| 3327 | { | |
| 3328 | case aarch64_stub_adrp_branch: | |
| 1d75a8e2 NC |
3329 | if (!aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21), stub_bfd, stub_sec, |
| 3330 | stub_entry->stub_offset, sym_value)) | |
| a06ea964 NC |
3331 | /* The stub would not have been relaxed if the offset was out |
| 3332 | of range. */ | |
| 3333 | BFD_FAIL (); | |
| 3334 | ||
| 1d75a8e2 NC |
3335 | if (!aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC), stub_bfd, stub_sec, |
| 3336 | stub_entry->stub_offset + 4, sym_value)) | |
| 93ca8569 | 3337 | BFD_FAIL (); |
| a06ea964 NC |
3338 | break; |
| 3339 | ||
| 3340 | case aarch64_stub_long_branch: | |
| 3341 | /* We want the value relative to the address 12 bytes back from the | |
| 07d6d2b8 | 3342 | value itself. */ |
| 1d75a8e2 NC |
3343 | if (!aarch64_relocate (AARCH64_R (PRELNN), stub_bfd, stub_sec, |
| 3344 | stub_entry->stub_offset + 16, sym_value + 12)) | |
| 93ca8569 | 3345 | BFD_FAIL (); |
| a06ea964 | 3346 | break; |
| 68fcca92 JW |
3347 | |
| 3348 | case aarch64_stub_erratum_835769_veneer: | |
| 3349 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
| 3350 | + stub_entry->target_section->output_offset | |
| 3351 | + stub_entry->target_value; | |
| 3352 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
| 3353 | + stub_entry->stub_sec->output_offset | |
| 3354 | + stub_entry->stub_offset; | |
| 3355 | branch_offset = veneered_insn_loc - veneer_entry_loc; | |
| 3356 | branch_offset >>= 2; | |
| 3357 | branch_offset &= 0x3ffffff; | |
| 3358 | bfd_putl32 (stub_entry->veneered_insn, | |
| 3359 | stub_sec->contents + stub_entry->stub_offset); | |
| 3360 | bfd_putl32 (template[1] | branch_offset, | |
| 3361 | stub_sec->contents + stub_entry->stub_offset + 4); | |
| 3362 | break; | |
| 3363 | ||
| 4106101c | 3364 | case aarch64_stub_erratum_843419_veneer: |
| 1d75a8e2 NC |
3365 | if (!aarch64_relocate (AARCH64_R (JUMP26), stub_bfd, stub_sec, |
| 3366 | stub_entry->stub_offset + 4, sym_value + 4)) | |
| 4106101c MS |
3367 | BFD_FAIL (); |
| 3368 | break; | |
| 3369 | ||
| a06ea964 | 3370 | default: |
| 8e2fe09f | 3371 | abort (); |
| a06ea964 NC |
3372 | } |
| 3373 | ||
| 0a1b45a2 | 3374 | return true; |
| a06ea964 NC |
3375 | } |
| 3376 | ||
| 3377 | /* As above, but don't actually build the stub. Just bump offset so | |
| 3378 | we know stub section sizes. */ | |
| 3379 | ||
| 0a1b45a2 | 3380 | static bool |
| 739b5c9c | 3381 | aarch64_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
| a06ea964 | 3382 | { |
| cec5225b | 3383 | struct elf_aarch64_stub_hash_entry *stub_entry; |
| 739b5c9c | 3384 | struct elf_aarch64_link_hash_table *htab; |
| a06ea964 NC |
3385 | int size; |
| 3386 | ||
| 3387 | /* Massage our args to the form they really have. */ | |
| cec5225b | 3388 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
| 739b5c9c | 3389 | htab = (struct elf_aarch64_link_hash_table *) in_arg; |
| a06ea964 NC |
3390 | |
| 3391 | switch (stub_entry->stub_type) | |
| 3392 | { | |
| 3393 | case aarch64_stub_adrp_branch: | |
| 3394 | size = sizeof (aarch64_adrp_branch_stub); | |
| 3395 | break; | |
| 3396 | case aarch64_stub_long_branch: | |
| 3397 | size = sizeof (aarch64_long_branch_stub); | |
| 3398 | break; | |
| 68fcca92 JW |
3399 | case aarch64_stub_erratum_835769_veneer: |
| 3400 | size = sizeof (aarch64_erratum_835769_stub); | |
| 3401 | break; | |
| 4106101c | 3402 | case aarch64_stub_erratum_843419_veneer: |
| 739b5c9c TC |
3403 | { |
| 3404 | if (htab->fix_erratum_843419 == ERRAT_ADR) | |
| 0a1b45a2 | 3405 | return true; |
| 739b5c9c TC |
3406 | size = sizeof (aarch64_erratum_843419_stub); |
| 3407 | } | |
| 4106101c | 3408 | break; |
| a06ea964 | 3409 | default: |
| 8e2fe09f | 3410 | abort (); |
| a06ea964 NC |
3411 | } |
| 3412 | ||
| 3413 | size = (size + 7) & ~7; | |
| 3414 | stub_entry->stub_sec->size += size; | |
| 0a1b45a2 | 3415 | return true; |
| a06ea964 NC |
3416 | } |
| 3417 | ||
| 3418 | /* External entry points for sizing and building linker stubs. */ | |
| 3419 | ||
| 3420 | /* Set up various things so that we can make a list of input sections | |
| 3421 | for each output section included in the link. Returns -1 on error, | |
| 3422 | 0 when no stubs will be needed, and 1 on success. */ | |
| 3423 | ||
| 3424 | int | |
| cec5225b | 3425 | elfNN_aarch64_setup_section_lists (bfd *output_bfd, |
| a06ea964 NC |
3426 | struct bfd_link_info *info) |
| 3427 | { | |
| 3428 | bfd *input_bfd; | |
| 3429 | unsigned int bfd_count; | |
| 7292b3ac | 3430 | unsigned int top_id, top_index; |
| a06ea964 NC |
3431 | asection *section; |
| 3432 | asection **input_list, **list; | |
| 986f0783 | 3433 | size_t amt; |
| cec5225b YZ |
3434 | struct elf_aarch64_link_hash_table *htab = |
| 3435 | elf_aarch64_hash_table (info); | |
| a06ea964 | 3436 | |
| 2cc15b10 | 3437 | if (!is_elf_hash_table (&htab->root.root)) |
| a06ea964 NC |
3438 | return 0; |
| 3439 | ||
| 3440 | /* Count the number of input BFDs and find the top input section id. */ | |
| 3441 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
| c72f2fb2 | 3442 | input_bfd != NULL; input_bfd = input_bfd->link.next) |
| a06ea964 NC |
3443 | { |
| 3444 | bfd_count += 1; | |
| 3445 | for (section = input_bfd->sections; | |
| 3446 | section != NULL; section = section->next) | |
| 3447 | { | |
| 3448 | if (top_id < section->id) | |
| 3449 | top_id = section->id; | |
| 3450 | } | |
| 3451 | } | |
| 3452 | htab->bfd_count = bfd_count; | |
| 3453 | ||
| 3454 | amt = sizeof (struct map_stub) * (top_id + 1); | |
| 3455 | htab->stub_group = bfd_zmalloc (amt); | |
| 3456 | if (htab->stub_group == NULL) | |
| 3457 | return -1; | |
| 3458 | ||
| 3459 | /* We can't use output_bfd->section_count here to find the top output | |
| 3460 | section index as some sections may have been removed, and | |
| 3461 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
| 3462 | for (section = output_bfd->sections, top_index = 0; | |
| 3463 | section != NULL; section = section->next) | |
| 3464 | { | |
| 3465 | if (top_index < section->index) | |
| 3466 | top_index = section->index; | |
| 3467 | } | |
| 3468 | ||
| 3469 | htab->top_index = top_index; | |
| 3470 | amt = sizeof (asection *) * (top_index + 1); | |
| 3471 | input_list = bfd_malloc (amt); | |
| 3472 | htab->input_list = input_list; | |
| 3473 | if (input_list == NULL) | |
| 3474 | return -1; | |
| 3475 | ||
| 3476 | /* For sections we aren't interested in, mark their entries with a | |
| 3477 | value we can check later. */ | |
| 3478 | list = input_list + top_index; | |
| 3479 | do | |
| 3480 | *list = bfd_abs_section_ptr; | |
| 3481 | while (list-- != input_list); | |
| 3482 | ||
| 3483 | for (section = output_bfd->sections; | |
| 3484 | section != NULL; section = section->next) | |
| 3485 | { | |
| 3486 | if ((section->flags & SEC_CODE) != 0) | |
| 3487 | input_list[section->index] = NULL; | |
| 3488 | } | |
| 3489 | ||
| 3490 | return 1; | |
| 3491 | } | |
| 3492 | ||
| cec5225b | 3493 | /* Used by elfNN_aarch64_next_input_section and group_sections. */ |
| a06ea964 NC |
3494 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
| 3495 | ||
| 3496 | /* The linker repeatedly calls this function for each input section, | |
| 3497 | in the order that input sections are linked into output sections. | |
| 3498 | Build lists of input sections to determine groupings between which | |
| 3499 | we may insert linker stubs. */ | |
| 3500 | ||
| 3501 | void | |
| cec5225b | 3502 | elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec) |
| a06ea964 | 3503 | { |
| cec5225b YZ |
3504 | struct elf_aarch64_link_hash_table *htab = |
| 3505 | elf_aarch64_hash_table (info); | |
| a06ea964 NC |
3506 | |
| 3507 | if (isec->output_section->index <= htab->top_index) | |
| 3508 | { | |
| 3509 | asection **list = htab->input_list + isec->output_section->index; | |
| 3510 | ||
| cff69cf4 | 3511 | if (*list != bfd_abs_section_ptr && (isec->flags & SEC_CODE) != 0) |
| a06ea964 NC |
3512 | { |
| 3513 | /* Steal the link_sec pointer for our list. */ | |
| 3514 | /* This happens to make the list in reverse order, | |
| 3515 | which is what we want. */ | |
| 3516 | PREV_SEC (isec) = *list; | |
| 3517 | *list = isec; | |
| 3518 | } | |
| 3519 | } | |
| 3520 | } | |
| 3521 | ||
| 3522 | /* See whether we can group stub sections together. Grouping stub | |
| 3523 | sections may result in fewer stubs. More importantly, we need to | |
| 3524 | put all .init* and .fini* stubs at the beginning of the .init or | |
| 3525 | .fini output sections respectively, because glibc splits the | |
| 3526 | _init and _fini functions into multiple parts. Putting a stub in | |
| 3527 | the middle of a function is not a good idea. */ | |
| 3528 | ||
| 3529 | static void | |
| cec5225b | 3530 | group_sections (struct elf_aarch64_link_hash_table *htab, |
| a06ea964 | 3531 | bfd_size_type stub_group_size, |
| 0a1b45a2 | 3532 | bool stubs_always_after_branch) |
| a06ea964 | 3533 | { |
| cff69cf4 | 3534 | asection **list = htab->input_list; |
| a06ea964 NC |
3535 | |
| 3536 | do | |
| 3537 | { | |
| 3538 | asection *tail = *list; | |
| cff69cf4 | 3539 | asection *head; |
| a06ea964 NC |
3540 | |
| 3541 | if (tail == bfd_abs_section_ptr) | |
| 3542 | continue; | |
| 3543 | ||
| cff69cf4 WD |
3544 | /* Reverse the list: we must avoid placing stubs at the |
| 3545 | beginning of the section because the beginning of the text | |
| 3546 | section may be required for an interrupt vector in bare metal | |
| 3547 | code. */ | |
| 3548 | #define NEXT_SEC PREV_SEC | |
| 3549 | head = NULL; | |
| a06ea964 | 3550 | while (tail != NULL) |
| cff69cf4 WD |
3551 | { |
| 3552 | /* Pop from tail. */ | |
| 3553 | asection *item = tail; | |
| 3554 | tail = PREV_SEC (item); | |
| 3555 | ||
| 3556 | /* Push on head. */ | |
| 3557 | NEXT_SEC (item) = head; | |
| 3558 | head = item; | |
| 3559 | } | |
| 3560 | ||
| 3561 | while (head != NULL) | |
| a06ea964 NC |
3562 | { |
| 3563 | asection *curr; | |
| cff69cf4 WD |
3564 | asection *next; |
| 3565 | bfd_vma stub_group_start = head->output_offset; | |
| 3566 | bfd_vma end_of_next; | |
| a06ea964 | 3567 | |
| cff69cf4 WD |
3568 | curr = head; |
| 3569 | while (NEXT_SEC (curr) != NULL) | |
| 3570 | { | |
| 3571 | next = NEXT_SEC (curr); | |
| 3572 | end_of_next = next->output_offset + next->size; | |
| 3573 | if (end_of_next - stub_group_start >= stub_group_size) | |
| 3574 | /* End of NEXT is too far from start, so stop. */ | |
| 3575 | break; | |
| 3576 | /* Add NEXT to the group. */ | |
| 3577 | curr = next; | |
| 3578 | } | |
| a06ea964 | 3579 | |
| cff69cf4 | 3580 | /* OK, the size from the start to the start of CURR is less |
| a06ea964 | 3581 | than stub_group_size and thus can be handled by one stub |
| cff69cf4 | 3582 | section. (Or the head section is itself larger than |
| a06ea964 NC |
3583 | stub_group_size, in which case we may be toast.) |
| 3584 | We should really be keeping track of the total size of | |
| 3585 | stubs added here, as stubs contribute to the final output | |
| 3586 | section size. */ | |
| 3587 | do | |
| 3588 | { | |
| cff69cf4 | 3589 | next = NEXT_SEC (head); |
| a06ea964 | 3590 | /* Set up this stub group. */ |
| cff69cf4 | 3591 | htab->stub_group[head->id].link_sec = curr; |
| a06ea964 | 3592 | } |
| cff69cf4 | 3593 | while (head != curr && (head = next) != NULL); |
| a06ea964 NC |
3594 | |
| 3595 | /* But wait, there's more! Input sections up to stub_group_size | |
| cff69cf4 WD |
3596 | bytes after the stub section can be handled by it too. */ |
| 3597 | if (!stubs_always_after_branch) | |
| a06ea964 | 3598 | { |
| cff69cf4 WD |
3599 | stub_group_start = curr->output_offset + curr->size; |
| 3600 | ||
| 3601 | while (next != NULL) | |
| a06ea964 | 3602 | { |
| cff69cf4 WD |
3603 | end_of_next = next->output_offset + next->size; |
| 3604 | if (end_of_next - stub_group_start >= stub_group_size) | |
| 3605 | /* End of NEXT is too far from stubs, so stop. */ | |
| 3606 | break; | |
| 3607 | /* Add NEXT to the stub group. */ | |
| 3608 | head = next; | |
| 3609 | next = NEXT_SEC (head); | |
| 3610 | htab->stub_group[head->id].link_sec = curr; | |
| a06ea964 NC |
3611 | } |
| 3612 | } | |
| cff69cf4 | 3613 | head = next; |
| a06ea964 NC |
3614 | } |
| 3615 | } | |
| cff69cf4 | 3616 | while (list++ != htab->input_list + htab->top_index); |
| a06ea964 NC |
3617 | |
| 3618 | free (htab->input_list); | |
| 3619 | } | |
| 3620 | ||
| cff69cf4 | 3621 | #undef PREV_SEC |
| a06ea964 NC |
3622 | #undef PREV_SEC |
| 3623 | ||
| 68fcca92 JW |
3624 | #define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1)) |
| 3625 | ||
| 3626 | #define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5) | |
| 3627 | #define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5) | |
| 3628 | #define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5) | |
| 3629 | #define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5) | |
| 3630 | #define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5) | |
| 3631 | #define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5) | |
| 3632 | ||
| 3633 | #define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000) | |
| 3634 | #define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1) | |
| 3635 | #define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3) | |
| 3636 | #define AARCH64_ZR 0x1f | |
| 3637 | ||
| 3638 | /* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for | |
| 3639 | LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */ | |
| 3640 | ||
| 3641 | #define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1) | |
| 3642 | #define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000) | |
| 3643 | #define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000) | |
| 3644 | #define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000) | |
| 3645 | #define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000) | |
| 3646 | #define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000) | |
| 3647 | #define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000) | |
| 3648 | #define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000) | |
| 3649 | #define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000) | |
| 3650 | #define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400) | |
| 3651 | #define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800) | |
| 3652 | #define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00) | |
| 3653 | #define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800) | |
| 3654 | #define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000) | |
| 3655 | #define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000) | |
| 3656 | #define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000) | |
| 3657 | #define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000) | |
| 3658 | #define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000) | |
| 3659 | ||
| 3d14faea MS |
3660 | /* Classify an INSN if it is indeed a load/store. |
| 3661 | ||
| 3662 | Return TRUE if INSN is a LD/ST instruction otherwise return FALSE. | |
| 3663 | ||
| 3664 | For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2 | |
| 3665 | is set equal to RT. | |
| 3666 | ||
| 2d0ca824 | 3667 | For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. */ |
| 68fcca92 | 3668 | |
| 0a1b45a2 | 3669 | static bool |
| 3d14faea | 3670 | aarch64_mem_op_p (uint32_t insn, unsigned int *rt, unsigned int *rt2, |
| 0a1b45a2 | 3671 | bool *pair, bool *load) |
| 68fcca92 JW |
3672 | { |
| 3673 | uint32_t opcode; | |
| 3674 | unsigned int r; | |
| 3675 | uint32_t opc = 0; | |
| 3676 | uint32_t v = 0; | |
| 3677 | uint32_t opc_v = 0; | |
| 3678 | ||
| de194d85 | 3679 | /* Bail out quickly if INSN doesn't fall into the load-store |
| 68fcca92 JW |
3680 | encoding space. */ |
| 3681 | if (!AARCH64_LDST (insn)) | |
| 0a1b45a2 | 3682 | return false; |
| 68fcca92 | 3683 | |
| 0a1b45a2 AM |
3684 | *pair = false; |
| 3685 | *load = false; | |
| 68fcca92 JW |
3686 | if (AARCH64_LDST_EX (insn)) |
| 3687 | { | |
| 3688 | *rt = AARCH64_RT (insn); | |
| 3d14faea | 3689 | *rt2 = *rt; |
| 68fcca92 | 3690 | if (AARCH64_BIT (insn, 21) == 1) |
| 07d6d2b8 | 3691 | { |
| 0a1b45a2 | 3692 | *pair = true; |
| 3d14faea | 3693 | *rt2 = AARCH64_RT2 (insn); |
| 68fcca92 JW |
3694 | } |
| 3695 | *load = AARCH64_LD (insn); | |
| 0a1b45a2 | 3696 | return true; |
| 68fcca92 JW |
3697 | } |
| 3698 | else if (AARCH64_LDST_NAP (insn) | |
| 3699 | || AARCH64_LDSTP_PI (insn) | |
| 3700 | || AARCH64_LDSTP_O (insn) | |
| 3701 | || AARCH64_LDSTP_PRE (insn)) | |
| 3702 | { | |
| 0a1b45a2 | 3703 | *pair = true; |
| 68fcca92 | 3704 | *rt = AARCH64_RT (insn); |
| 3d14faea | 3705 | *rt2 = AARCH64_RT2 (insn); |
| 68fcca92 | 3706 | *load = AARCH64_LD (insn); |
| 0a1b45a2 | 3707 | return true; |
| 68fcca92 JW |
3708 | } |
| 3709 | else if (AARCH64_LDST_PCREL (insn) | |
| 3710 | || AARCH64_LDST_UI (insn) | |
| 3711 | || AARCH64_LDST_PIIMM (insn) | |
| 3712 | || AARCH64_LDST_U (insn) | |
| 3713 | || AARCH64_LDST_PREIMM (insn) | |
| 3714 | || AARCH64_LDST_RO (insn) | |
| 3715 | || AARCH64_LDST_UIMM (insn)) | |
| 3716 | { | |
| 3717 | *rt = AARCH64_RT (insn); | |
| 3d14faea | 3718 | *rt2 = *rt; |
| 68fcca92 | 3719 | if (AARCH64_LDST_PCREL (insn)) |
| 0a1b45a2 | 3720 | *load = true; |
| 68fcca92 JW |
3721 | opc = AARCH64_BITS (insn, 22, 2); |
| 3722 | v = AARCH64_BIT (insn, 26); | |
| 3723 | opc_v = opc | (v << 2); | |
| 3724 | *load = (opc_v == 1 || opc_v == 2 || opc_v == 3 | |
| 3725 | || opc_v == 5 || opc_v == 7); | |
| 0a1b45a2 | 3726 | return true; |
| 68fcca92 JW |
3727 | } |
| 3728 | else if (AARCH64_LDST_SIMD_M (insn) | |
| 3729 | || AARCH64_LDST_SIMD_M_PI (insn)) | |
| 3730 | { | |
| 3731 | *rt = AARCH64_RT (insn); | |
| 3732 | *load = AARCH64_BIT (insn, 22); | |
| 3733 | opcode = (insn >> 12) & 0xf; | |
| 3734 | switch (opcode) | |
| 3735 | { | |
| 3736 | case 0: | |
| 3737 | case 2: | |
| 3d14faea | 3738 | *rt2 = *rt + 3; |
| 68fcca92 JW |
3739 | break; |
| 3740 | ||
| 3741 | case 4: | |
| 3742 | case 6: | |
| 3d14faea | 3743 | *rt2 = *rt + 2; |
| 68fcca92 JW |
3744 | break; |
| 3745 | ||
| 3746 | case 7: | |
| 3d14faea | 3747 | *rt2 = *rt; |
| 68fcca92 JW |
3748 | break; |
| 3749 | ||
| 3750 | case 8: | |
| 3751 | case 10: | |
| 3d14faea | 3752 | *rt2 = *rt + 1; |
| 68fcca92 JW |
3753 | break; |
| 3754 | ||
| 3755 | default: | |
| 0a1b45a2 | 3756 | return false; |
| 68fcca92 | 3757 | } |
| 0a1b45a2 | 3758 | return true; |
| 68fcca92 JW |
3759 | } |
| 3760 | else if (AARCH64_LDST_SIMD_S (insn) | |
| 3761 | || AARCH64_LDST_SIMD_S_PI (insn)) | |
| 3762 | { | |
| 3763 | *rt = AARCH64_RT (insn); | |
| 3764 | r = (insn >> 21) & 1; | |
| 3765 | *load = AARCH64_BIT (insn, 22); | |
| 3766 | opcode = (insn >> 13) & 0x7; | |
| 3767 | switch (opcode) | |
| 3768 | { | |
| 3769 | case 0: | |
| 3770 | case 2: | |
| 3771 | case 4: | |
| 3d14faea | 3772 | *rt2 = *rt + r; |
| 68fcca92 JW |
3773 | break; |
| 3774 | ||
| 3775 | case 1: | |
| 3776 | case 3: | |
| 3777 | case 5: | |
| 3d14faea | 3778 | *rt2 = *rt + (r == 0 ? 2 : 3); |
| 68fcca92 JW |
3779 | break; |
| 3780 | ||
| 3781 | case 6: | |
| 3d14faea | 3782 | *rt2 = *rt + r; |
| 68fcca92 JW |
3783 | break; |
| 3784 | ||
| 3785 | case 7: | |
| 3d14faea | 3786 | *rt2 = *rt + (r == 0 ? 2 : 3); |
| 68fcca92 JW |
3787 | break; |
| 3788 | ||
| 3789 | default: | |
| 0a1b45a2 | 3790 | return false; |
| 68fcca92 | 3791 | } |
| 0a1b45a2 | 3792 | return true; |
| 68fcca92 JW |
3793 | } |
| 3794 | ||
| 0a1b45a2 | 3795 | return false; |
| 68fcca92 JW |
3796 | } |
| 3797 | ||
| 3798 | /* Return TRUE if INSN is multiply-accumulate. */ | |
| 3799 | ||
| 0a1b45a2 | 3800 | static bool |
| 68fcca92 JW |
3801 | aarch64_mlxl_p (uint32_t insn) |
| 3802 | { | |
| 3803 | uint32_t op31 = AARCH64_OP31 (insn); | |
| 3804 | ||
| 3805 | if (AARCH64_MAC (insn) | |
| 3806 | && (op31 == 0 || op31 == 1 || op31 == 5) | |
| 3807 | /* Exclude MUL instructions which are encoded as a multiple accumulate | |
| 3808 | with RA = XZR. */ | |
| 3809 | && AARCH64_RA (insn) != AARCH64_ZR) | |
| 0a1b45a2 | 3810 | return true; |
| 68fcca92 | 3811 | |
| 0a1b45a2 | 3812 | return false; |
| 68fcca92 JW |
3813 | } |
| 3814 | ||
| 3815 | /* Some early revisions of the Cortex-A53 have an erratum (835769) whereby | |
| 3816 | it is possible for a 64-bit multiply-accumulate instruction to generate an | |
| 3817 | incorrect result. The details are quite complex and hard to | |
| 3818 | determine statically, since branches in the code may exist in some | |
| 3819 | circumstances, but all cases end with a memory (load, store, or | |
| 3820 | prefetch) instruction followed immediately by the multiply-accumulate | |
| 3821 | operation. We employ a linker patching technique, by moving the potentially | |
| 3822 | affected multiply-accumulate instruction into a patch region and replacing | |
| 3823 | the original instruction with a branch to the patch. This function checks | |
| 3824 | if INSN_1 is the memory operation followed by a multiply-accumulate | |
| 3825 | operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE | |
| 3826 | if INSN_1 and INSN_2 are safe. */ | |
| 3827 | ||
| 0a1b45a2 | 3828 | static bool |
| 68fcca92 JW |
3829 | aarch64_erratum_sequence (uint32_t insn_1, uint32_t insn_2) |
| 3830 | { | |
| 3831 | uint32_t rt; | |
| 3d14faea | 3832 | uint32_t rt2; |
| 68fcca92 JW |
3833 | uint32_t rn; |
| 3834 | uint32_t rm; | |
| 3835 | uint32_t ra; | |
| 0a1b45a2 AM |
3836 | bool pair; |
| 3837 | bool load; | |
| 68fcca92 JW |
3838 | |
| 3839 | if (aarch64_mlxl_p (insn_2) | |
| 3d14faea | 3840 | && aarch64_mem_op_p (insn_1, &rt, &rt2, &pair, &load)) |
| 68fcca92 JW |
3841 | { |
| 3842 | /* Any SIMD memory op is independent of the subsequent MLA | |
| 3843 | by definition of the erratum. */ | |
| 3844 | if (AARCH64_BIT (insn_1, 26)) | |
| 0a1b45a2 | 3845 | return true; |
| 68fcca92 JW |
3846 | |
| 3847 | /* If not SIMD, check for integer memory ops and MLA relationship. */ | |
| 3848 | rn = AARCH64_RN (insn_2); | |
| 3849 | ra = AARCH64_RA (insn_2); | |
| 3850 | rm = AARCH64_RM (insn_2); | |
| 3851 | ||
| 3852 | /* If this is a load and there's a true(RAW) dependency, we are safe | |
| 3853 | and this is not an erratum sequence. */ | |
| 3854 | if (load && | |
| 3855 | (rt == rn || rt == rm || rt == ra | |
| 3d14faea | 3856 | || (pair && (rt2 == rn || rt2 == rm || rt2 == ra)))) |
| 0a1b45a2 | 3857 | return false; |
| 68fcca92 JW |
3858 | |
| 3859 | /* We conservatively put out stubs for all other cases (including | |
| 3860 | writebacks). */ | |
| 0a1b45a2 | 3861 | return true; |
| 68fcca92 JW |
3862 | } |
| 3863 | ||
| 0a1b45a2 | 3864 | return false; |
| 68fcca92 JW |
3865 | } |
| 3866 | ||
| 520c7b56 JW |
3867 | /* Used to order a list of mapping symbols by address. */ |
| 3868 | ||
| 3869 | static int | |
| 3870 | elf_aarch64_compare_mapping (const void *a, const void *b) | |
| 3871 | { | |
| 3872 | const elf_aarch64_section_map *amap = (const elf_aarch64_section_map *) a; | |
| 3873 | const elf_aarch64_section_map *bmap = (const elf_aarch64_section_map *) b; | |
| 3874 | ||
| 3875 | if (amap->vma > bmap->vma) | |
| 3876 | return 1; | |
| 3877 | else if (amap->vma < bmap->vma) | |
| 3878 | return -1; | |
| 3879 | else if (amap->type > bmap->type) | |
| 3880 | /* Ensure results do not depend on the host qsort for objects with | |
| 3881 | multiple mapping symbols at the same address by sorting on type | |
| 3882 | after vma. */ | |
| 3883 | return 1; | |
| 3884 | else if (amap->type < bmap->type) | |
| 3885 | return -1; | |
| 3886 | else | |
| 3887 | return 0; | |
| 3888 | } | |
| 3889 | ||
| 2144188d | 3890 | |
| 35fee8b7 MS |
3891 | static char * |
| 3892 | _bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes) | |
| 3893 | { | |
| 3894 | char *stub_name = (char *) bfd_malloc | |
| 3895 | (strlen ("__erratum_835769_veneer_") + 16); | |
| bb69498c NC |
3896 | if (stub_name != NULL) |
| 3897 | sprintf (stub_name,"__erratum_835769_veneer_%d", num_fixes); | |
| 35fee8b7 MS |
3898 | return stub_name; |
| 3899 | } | |
| 3900 | ||
| 4106101c | 3901 | /* Scan for Cortex-A53 erratum 835769 sequence. |
| 2144188d MS |
3902 | |
| 3903 | Return TRUE else FALSE on abnormal termination. */ | |
| 3904 | ||
| 0a1b45a2 | 3905 | static bool |
| 5421cc6e MS |
3906 | _bfd_aarch64_erratum_835769_scan (bfd *input_bfd, |
| 3907 | struct bfd_link_info *info, | |
| 3908 | unsigned int *num_fixes_p) | |
| 68fcca92 JW |
3909 | { |
| 3910 | asection *section; | |
| 3911 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
| 68fcca92 | 3912 | unsigned int num_fixes = *num_fixes_p; |
| 68fcca92 JW |
3913 | |
| 3914 | if (htab == NULL) | |
| 0a1b45a2 | 3915 | return true; |
| 68fcca92 JW |
3916 | |
| 3917 | for (section = input_bfd->sections; | |
| 3918 | section != NULL; | |
| 3919 | section = section->next) | |
| 3920 | { | |
| 3921 | bfd_byte *contents = NULL; | |
| 3922 | struct _aarch64_elf_section_data *sec_data; | |
| 3923 | unsigned int span; | |
| 3924 | ||
| 3925 | if (elf_section_type (section) != SHT_PROGBITS | |
| 3926 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
| 3927 | || (section->flags & SEC_EXCLUDE) != 0 | |
| 3928 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
| 3929 | || (section->output_section == bfd_abs_section_ptr)) | |
| 3930 | continue; | |
| 3931 | ||
| 3932 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
| 3933 | contents = elf_section_data (section)->this_hdr.contents; | |
| 3934 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
| 0a1b45a2 | 3935 | return false; |
| 68fcca92 JW |
3936 | |
| 3937 | sec_data = elf_aarch64_section_data (section); | |
| 520c7b56 | 3938 | |
| ccf61261 NC |
3939 | if (sec_data->mapcount) |
| 3940 | qsort (sec_data->map, sec_data->mapcount, | |
| 3941 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
| 520c7b56 | 3942 | |
| 68fcca92 JW |
3943 | for (span = 0; span < sec_data->mapcount; span++) |
| 3944 | { | |
| 3945 | unsigned int span_start = sec_data->map[span].vma; | |
| 3946 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
| 3947 | ? sec_data->map[0].vma + section->size | |
| 3948 | : sec_data->map[span + 1].vma); | |
| 3949 | unsigned int i; | |
| 3950 | char span_type = sec_data->map[span].type; | |
| 3951 | ||
| 3952 | if (span_type == 'd') | |
| 3953 | continue; | |
| 3954 | ||
| 3955 | for (i = span_start; i + 4 < span_end; i += 4) | |
| 3956 | { | |
| 3957 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
| 3958 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
| 3959 | ||
| 3960 | if (aarch64_erratum_sequence (insn_1, insn_2)) | |
| 3961 | { | |
| 5421cc6e | 3962 | struct elf_aarch64_stub_hash_entry *stub_entry; |
| 35fee8b7 MS |
3963 | char *stub_name = _bfd_aarch64_erratum_835769_stub_name (num_fixes); |
| 3964 | if (! stub_name) | |
| 0a1b45a2 | 3965 | return false; |
| 68fcca92 | 3966 | |
| 5421cc6e MS |
3967 | stub_entry = _bfd_aarch64_add_stub_entry_in_group (stub_name, |
| 3968 | section, | |
| 3969 | htab); | |
| 3970 | if (! stub_entry) | |
| 0a1b45a2 | 3971 | return false; |
| 68fcca92 | 3972 | |
| 5421cc6e MS |
3973 | stub_entry->stub_type = aarch64_stub_erratum_835769_veneer; |
| 3974 | stub_entry->target_section = section; | |
| 3975 | stub_entry->target_value = i + 4; | |
| 3976 | stub_entry->veneered_insn = insn_2; | |
| 3977 | stub_entry->output_name = stub_name; | |
| 68fcca92 JW |
3978 | num_fixes++; |
| 3979 | } | |
| 3980 | } | |
| 3981 | } | |
| 3982 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
| 3983 | free (contents); | |
| 3984 | } | |
| 3985 | ||
| 357d1523 MS |
3986 | *num_fixes_p = num_fixes; |
| 3987 | ||
| 0a1b45a2 | 3988 | return true; |
| 68fcca92 JW |
3989 | } |
| 3990 | ||
| 13f622ec | 3991 | |
| 4106101c MS |
3992 | /* Test if instruction INSN is ADRP. */ |
| 3993 | ||
| 0a1b45a2 | 3994 | static bool |
| 4106101c MS |
3995 | _bfd_aarch64_adrp_p (uint32_t insn) |
| 3996 | { | |
| 9fca35fc | 3997 | return ((insn & AARCH64_ADRP_OP_MASK) == AARCH64_ADRP_OP); |
| 4106101c MS |
3998 | } |
| 3999 | ||
| 4000 | ||
| 4001 | /* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */ | |
| 4002 | ||
| 0a1b45a2 | 4003 | static bool |
| 4106101c MS |
4004 | _bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1, uint32_t insn_2, |
| 4005 | uint32_t insn_3) | |
| 4006 | { | |
| 4007 | uint32_t rt; | |
| 4008 | uint32_t rt2; | |
| 0a1b45a2 AM |
4009 | bool pair; |
| 4010 | bool load; | |
| 4106101c MS |
4011 | |
| 4012 | return (aarch64_mem_op_p (insn_2, &rt, &rt2, &pair, &load) | |
| 4013 | && (!pair | |
| 4014 | || (pair && !load)) | |
| 4015 | && AARCH64_LDST_UIMM (insn_3) | |
| 4016 | && AARCH64_RN (insn_3) == AARCH64_RD (insn_1)); | |
| 4017 | } | |
| 4018 | ||
| 4019 | ||
| 4020 | /* Test for the presence of Cortex-A53 erratum 843419 instruction sequence. | |
| 4021 | ||
| 4022 | Return TRUE if section CONTENTS at offset I contains one of the | |
| 4023 | erratum 843419 sequences, otherwise return FALSE. If a sequence is | |
| 4024 | seen set P_VENEER_I to the offset of the final LOAD/STORE | |
| 4025 | instruction in the sequence. | |
| 4026 | */ | |
| 4027 | ||
| 0a1b45a2 | 4028 | static bool |
| 4106101c MS |
4029 | _bfd_aarch64_erratum_843419_p (bfd_byte *contents, bfd_vma vma, |
| 4030 | bfd_vma i, bfd_vma span_end, | |
| 4031 | bfd_vma *p_veneer_i) | |
| 4032 | { | |
| 4033 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
| 4034 | ||
| 4035 | if (!_bfd_aarch64_adrp_p (insn_1)) | |
| 0a1b45a2 | 4036 | return false; |
| 4106101c MS |
4037 | |
| 4038 | if (span_end < i + 12) | |
| 0a1b45a2 | 4039 | return false; |
| 4106101c MS |
4040 | |
| 4041 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
| 4042 | uint32_t insn_3 = bfd_getl32 (contents + i + 8); | |
| 4043 | ||
| 4044 | if ((vma & 0xfff) != 0xff8 && (vma & 0xfff) != 0xffc) | |
| 0a1b45a2 | 4045 | return false; |
| 4106101c MS |
4046 | |
| 4047 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_3)) | |
| 4048 | { | |
| 4049 | *p_veneer_i = i + 8; | |
| 0a1b45a2 | 4050 | return true; |
| 4106101c MS |
4051 | } |
| 4052 | ||
| 4053 | if (span_end < i + 16) | |
| 0a1b45a2 | 4054 | return false; |
| 4106101c MS |
4055 | |
| 4056 | uint32_t insn_4 = bfd_getl32 (contents + i + 12); | |
| 4057 | ||
| 4058 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_4)) | |
| 4059 | { | |
| 4060 | *p_veneer_i = i + 12; | |
| 0a1b45a2 | 4061 | return true; |
| 4106101c MS |
4062 | } |
| 4063 | ||
| 0a1b45a2 | 4064 | return false; |
| 4106101c MS |
4065 | } |
| 4066 | ||
| 4067 | ||
| 13f622ec MS |
4068 | /* Resize all stub sections. */ |
| 4069 | ||
| 4070 | static void | |
| 4071 | _bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table *htab) | |
| 4072 | { | |
| 4073 | asection *section; | |
| 4074 | ||
| 4075 | /* OK, we've added some stubs. Find out the new size of the | |
| 4076 | stub sections. */ | |
| 4077 | for (section = htab->stub_bfd->sections; | |
| 4078 | section != NULL; section = section->next) | |
| 4079 | { | |
| 4080 | /* Ignore non-stub sections. */ | |
| 4081 | if (!strstr (section->name, STUB_SUFFIX)) | |
| 4082 | continue; | |
| 4083 | section->size = 0; | |
| 4084 | } | |
| 4085 | ||
| 4086 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab); | |
| 13f622ec | 4087 | |
| 61865519 MS |
4088 | for (section = htab->stub_bfd->sections; |
| 4089 | section != NULL; section = section->next) | |
| 4090 | { | |
| 4091 | if (!strstr (section->name, STUB_SUFFIX)) | |
| 4092 | continue; | |
| 4093 | ||
| 9a2ebffd JW |
4094 | /* Add space for a branch. Add 8 bytes to keep section 8 byte aligned, |
| 4095 | as long branch stubs contain a 64-bit address. */ | |
| 61865519 | 4096 | if (section->size) |
| 9a2ebffd | 4097 | section->size += 8; |
| 4106101c MS |
4098 | |
| 4099 | /* Ensure all stub sections have a size which is a multiple of | |
| 4100 | 4096. This is important in order to ensure that the insertion | |
| 4101 | of stub sections does not in itself move existing code around | |
| 739b5c9c TC |
4102 | in such a way that new errata sequences are created. We only do this |
| 4103 | when the ADRP workaround is enabled. If only the ADR workaround is | |
| 4104 | enabled then the stubs workaround won't ever be used. */ | |
| 4105 | if (htab->fix_erratum_843419 & ERRAT_ADRP) | |
| 4106101c MS |
4106 | if (section->size) |
| 4107 | section->size = BFD_ALIGN (section->size, 0x1000); | |
| 4108 | } | |
| 4109 | } | |
| 4110 | ||
| 9a2ebffd | 4111 | /* Construct an erratum 843419 workaround stub name. */ |
| 4106101c MS |
4112 | |
| 4113 | static char * | |
| 4114 | _bfd_aarch64_erratum_843419_stub_name (asection *input_section, | |
| 4115 | bfd_vma offset) | |
| 4116 | { | |
| 4117 | const bfd_size_type len = 8 + 4 + 1 + 8 + 1 + 16 + 1; | |
| 4118 | char *stub_name = bfd_malloc (len); | |
| 4119 | ||
| 4120 | if (stub_name != NULL) | |
| b8281767 | 4121 | snprintf (stub_name, len, "e843419@%04x_%08x_%" PRIx64, |
| 4106101c MS |
4122 | input_section->owner->id, |
| 4123 | input_section->id, | |
| b8281767 | 4124 | (uint64_t) offset); |
| 4106101c MS |
4125 | return stub_name; |
| 4126 | } | |
| 4127 | ||
| 4128 | /* Build a stub_entry structure describing an 843419 fixup. | |
| 4129 | ||
| 4130 | The stub_entry constructed is populated with the bit pattern INSN | |
| 4131 | of the instruction located at OFFSET within input SECTION. | |
| 4132 | ||
| 4133 | Returns TRUE on success. */ | |
| 4134 | ||
| 0a1b45a2 | 4135 | static bool |
| 4106101c MS |
4136 | _bfd_aarch64_erratum_843419_fixup (uint32_t insn, |
| 4137 | bfd_vma adrp_offset, | |
| 4138 | bfd_vma ldst_offset, | |
| 4139 | asection *section, | |
| 4140 | struct bfd_link_info *info) | |
| 4141 | { | |
| 4142 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
| 4143 | char *stub_name; | |
| 4144 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
| 4145 | ||
| 4146 | stub_name = _bfd_aarch64_erratum_843419_stub_name (section, ldst_offset); | |
| bb69498c | 4147 | if (stub_name == NULL) |
| 0a1b45a2 | 4148 | return false; |
| 4106101c | 4149 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, |
| 0a1b45a2 | 4150 | false, false); |
| 4106101c MS |
4151 | if (stub_entry) |
| 4152 | { | |
| 4153 | free (stub_name); | |
| 0a1b45a2 | 4154 | return true; |
| 4106101c MS |
4155 | } |
| 4156 | ||
| 4157 | /* We always place an 843419 workaround veneer in the stub section | |
| 4158 | attached to the input section in which an erratum sequence has | |
| 4159 | been found. This ensures that later in the link process (in | |
| 4160 | elfNN_aarch64_write_section) when we copy the veneered | |
| 4161 | instruction from the input section into the stub section the | |
| 4162 | copied instruction will have had any relocations applied to it. | |
| 4163 | If we placed workaround veneers in any other stub section then we | |
| 4164 | could not assume that all relocations have been processed on the | |
| 4165 | corresponding input section at the point we output the stub | |
| bb69498c | 4166 | section. */ |
| 4106101c MS |
4167 | |
| 4168 | stub_entry = _bfd_aarch64_add_stub_entry_after (stub_name, section, htab); | |
| 4169 | if (stub_entry == NULL) | |
| 4170 | { | |
| 4171 | free (stub_name); | |
| 0a1b45a2 | 4172 | return false; |
| 4106101c MS |
4173 | } |
| 4174 | ||
| 4175 | stub_entry->adrp_offset = adrp_offset; | |
| 4176 | stub_entry->target_value = ldst_offset; | |
| 4177 | stub_entry->target_section = section; | |
| 4178 | stub_entry->stub_type = aarch64_stub_erratum_843419_veneer; | |
| 4179 | stub_entry->veneered_insn = insn; | |
| 4180 | stub_entry->output_name = stub_name; | |
| 4181 | ||
| 0a1b45a2 | 4182 | return true; |
| 4106101c MS |
4183 | } |
| 4184 | ||
| 4185 | ||
| 4186 | /* Scan an input section looking for the signature of erratum 843419. | |
| 4187 | ||
| 4188 | Scans input SECTION in INPUT_BFD looking for erratum 843419 | |
| 4189 | signatures, for each signature found a stub_entry is created | |
| 4190 | describing the location of the erratum for subsequent fixup. | |
| 4191 | ||
| 4192 | Return TRUE on successful scan, FALSE on failure to scan. | |
| 4193 | */ | |
| 4194 | ||
| 0a1b45a2 | 4195 | static bool |
| 4106101c MS |
4196 | _bfd_aarch64_erratum_843419_scan (bfd *input_bfd, asection *section, |
| 4197 | struct bfd_link_info *info) | |
| 4198 | { | |
| 4199 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
| 4200 | ||
| 4201 | if (htab == NULL) | |
| 0a1b45a2 | 4202 | return true; |
| 4106101c MS |
4203 | |
| 4204 | if (elf_section_type (section) != SHT_PROGBITS | |
| 4205 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
| 4206 | || (section->flags & SEC_EXCLUDE) != 0 | |
| 4207 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
| 4208 | || (section->output_section == bfd_abs_section_ptr)) | |
| 0a1b45a2 | 4209 | return true; |
| 4106101c MS |
4210 | |
| 4211 | do | |
| 4212 | { | |
| 4213 | bfd_byte *contents = NULL; | |
| 4214 | struct _aarch64_elf_section_data *sec_data; | |
| 4215 | unsigned int span; | |
| 4216 | ||
| 4217 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
| 4218 | contents = elf_section_data (section)->this_hdr.contents; | |
| 4219 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
| 0a1b45a2 | 4220 | return false; |
| 4106101c MS |
4221 | |
| 4222 | sec_data = elf_aarch64_section_data (section); | |
| 4223 | ||
| ccf61261 NC |
4224 | if (sec_data->mapcount) |
| 4225 | qsort (sec_data->map, sec_data->mapcount, | |
| 4226 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
| 4106101c MS |
4227 | |
| 4228 | for (span = 0; span < sec_data->mapcount; span++) | |
| 4229 | { | |
| 4230 | unsigned int span_start = sec_data->map[span].vma; | |
| 4231 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
| 4232 | ? sec_data->map[0].vma + section->size | |
| 4233 | : sec_data->map[span + 1].vma); | |
| 4234 | unsigned int i; | |
| 4235 | char span_type = sec_data->map[span].type; | |
| 4236 | ||
| 4237 | if (span_type == 'd') | |
| 4238 | continue; | |
| 4239 | ||
| 4240 | for (i = span_start; i + 8 < span_end; i += 4) | |
| 4241 | { | |
| 4242 | bfd_vma vma = (section->output_section->vma | |
| 4243 | + section->output_offset | |
| 4244 | + i); | |
| 4245 | bfd_vma veneer_i; | |
| 4246 | ||
| 4247 | if (_bfd_aarch64_erratum_843419_p | |
| 4248 | (contents, vma, i, span_end, &veneer_i)) | |
| 4249 | { | |
| 4250 | uint32_t insn = bfd_getl32 (contents + veneer_i); | |
| 4251 | ||
| 4252 | if (!_bfd_aarch64_erratum_843419_fixup (insn, i, veneer_i, | |
| 4253 | section, info)) | |
| 0a1b45a2 | 4254 | return false; |
| 4106101c MS |
4255 | } |
| 4256 | } | |
| 4257 | } | |
| 4258 | ||
| 4259 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
| 4260 | free (contents); | |
| 61865519 | 4261 | } |
| 4106101c MS |
4262 | while (0); |
| 4263 | ||
| 0a1b45a2 | 4264 | return true; |
| 61865519 | 4265 | } |
| 13f622ec | 4266 | |
| 4106101c | 4267 | |
| a06ea964 NC |
4268 | /* Determine and set the size of the stub section for a final link. |
| 4269 | ||
| 4270 | The basic idea here is to examine all the relocations looking for | |
| 4271 | PC-relative calls to a target that is unreachable with a "bl" | |
| 4272 | instruction. */ | |
| 4273 | ||
| 0a1b45a2 | 4274 | bool |
| cec5225b | 4275 | elfNN_aarch64_size_stubs (bfd *output_bfd, |
| a06ea964 NC |
4276 | bfd *stub_bfd, |
| 4277 | struct bfd_link_info *info, | |
| 4278 | bfd_signed_vma group_size, | |
| 4279 | asection * (*add_stub_section) (const char *, | |
| 4280 | asection *), | |
| 4281 | void (*layout_sections_again) (void)) | |
| 4282 | { | |
| 4283 | bfd_size_type stub_group_size; | |
| 0a1b45a2 AM |
4284 | bool stubs_always_before_branch; |
| 4285 | bool stub_changed = false; | |
| cec5225b | 4286 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); |
| 68fcca92 | 4287 | unsigned int num_erratum_835769_fixes = 0; |
| a06ea964 NC |
4288 | |
| 4289 | /* Propagate mach to stub bfd, because it may not have been | |
| 4290 | finalized when we created stub_bfd. */ | |
| 4291 | bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd), | |
| 4292 | bfd_get_mach (output_bfd)); | |
| 4293 | ||
| 4294 | /* Stash our params away. */ | |
| 4295 | htab->stub_bfd = stub_bfd; | |
| 4296 | htab->add_stub_section = add_stub_section; | |
| 4297 | htab->layout_sections_again = layout_sections_again; | |
| 4298 | stubs_always_before_branch = group_size < 0; | |
| 4299 | if (group_size < 0) | |
| 4300 | stub_group_size = -group_size; | |
| 4301 | else | |
| 4302 | stub_group_size = group_size; | |
| 4303 | ||
| 4304 | if (stub_group_size == 1) | |
| 4305 | { | |
| 4306 | /* Default values. */ | |
| b9eead84 | 4307 | /* AArch64 branch range is +-128MB. The value used is 1MB less. */ |
| a06ea964 NC |
4308 | stub_group_size = 127 * 1024 * 1024; |
| 4309 | } | |
| 4310 | ||
| 4311 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
| 4312 | ||
| 4106101c MS |
4313 | (*htab->layout_sections_again) (); |
| 4314 | ||
| 5421cc6e MS |
4315 | if (htab->fix_erratum_835769) |
| 4316 | { | |
| 4317 | bfd *input_bfd; | |
| 4318 | ||
| 4319 | for (input_bfd = info->input_bfds; | |
| 4320 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
| 8c803a2d AM |
4321 | { |
| 4322 | if (!is_aarch64_elf (input_bfd) | |
| 4323 | || (input_bfd->flags & BFD_LINKER_CREATED) != 0) | |
| 4324 | continue; | |
| 4325 | ||
| 4326 | if (!_bfd_aarch64_erratum_835769_scan (input_bfd, info, | |
| 4327 | &num_erratum_835769_fixes)) | |
| 0a1b45a2 | 4328 | return false; |
| 8c803a2d | 4329 | } |
| 5421cc6e | 4330 | |
| 4106101c MS |
4331 | _bfd_aarch64_resize_stubs (htab); |
| 4332 | (*htab->layout_sections_again) (); | |
| 4333 | } | |
| 4334 | ||
| 739b5c9c | 4335 | if (htab->fix_erratum_843419 != ERRAT_NONE) |
| 4106101c MS |
4336 | { |
| 4337 | bfd *input_bfd; | |
| 4338 | ||
| 4339 | for (input_bfd = info->input_bfds; | |
| 4340 | input_bfd != NULL; | |
| 4341 | input_bfd = input_bfd->link.next) | |
| 4342 | { | |
| 4343 | asection *section; | |
| 4344 | ||
| 8c803a2d AM |
4345 | if (!is_aarch64_elf (input_bfd) |
| 4346 | || (input_bfd->flags & BFD_LINKER_CREATED) != 0) | |
| 4347 | continue; | |
| 4348 | ||
| 4106101c MS |
4349 | for (section = input_bfd->sections; |
| 4350 | section != NULL; | |
| 4351 | section = section->next) | |
| 4352 | if (!_bfd_aarch64_erratum_843419_scan (input_bfd, section, info)) | |
| 0a1b45a2 | 4353 | return false; |
| 4106101c MS |
4354 | } |
| 4355 | ||
| 4356 | _bfd_aarch64_resize_stubs (htab); | |
| 4357 | (*htab->layout_sections_again) (); | |
| 5421cc6e MS |
4358 | } |
| 4359 | ||
| a06ea964 NC |
4360 | while (1) |
| 4361 | { | |
| 4362 | bfd *input_bfd; | |
| a06ea964 | 4363 | |
| 9b9971aa MS |
4364 | for (input_bfd = info->input_bfds; |
| 4365 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
| a06ea964 NC |
4366 | { |
| 4367 | Elf_Internal_Shdr *symtab_hdr; | |
| 4368 | asection *section; | |
| 4369 | Elf_Internal_Sym *local_syms = NULL; | |
| 4370 | ||
| 8c803a2d AM |
4371 | if (!is_aarch64_elf (input_bfd) |
| 4372 | || (input_bfd->flags & BFD_LINKER_CREATED) != 0) | |
| 4373 | continue; | |
| 4374 | ||
| a06ea964 NC |
4375 | /* We'll need the symbol table in a second. */ |
| 4376 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
| 4377 | if (symtab_hdr->sh_info == 0) | |
| 4378 | continue; | |
| 4379 | ||
| 4380 | /* Walk over each section attached to the input bfd. */ | |
| 4381 | for (section = input_bfd->sections; | |
| 4382 | section != NULL; section = section->next) | |
| 4383 | { | |
| 4384 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
| 4385 | ||
| 4386 | /* If there aren't any relocs, then there's nothing more | |
| 4387 | to do. */ | |
| 4388 | if ((section->flags & SEC_RELOC) == 0 | |
| 4389 | || section->reloc_count == 0 | |
| 4390 | || (section->flags & SEC_CODE) == 0) | |
| 4391 | continue; | |
| 4392 | ||
| 4393 | /* If this section is a link-once section that will be | |
| 4394 | discarded, then don't create any stubs. */ | |
| 4395 | if (section->output_section == NULL | |
| 4396 | || section->output_section->owner != output_bfd) | |
| 4397 | continue; | |
| 4398 | ||
| 4399 | /* Get the relocs. */ | |
| 4400 | internal_relocs | |
| 4401 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, | |
| 4402 | NULL, info->keep_memory); | |
| 4403 | if (internal_relocs == NULL) | |
| 4404 | goto error_ret_free_local; | |
| 4405 | ||
| 4406 | /* Now examine each relocation. */ | |
| 4407 | irela = internal_relocs; | |
| 4408 | irelaend = irela + section->reloc_count; | |
| 4409 | for (; irela < irelaend; irela++) | |
| 4410 | { | |
| 4411 | unsigned int r_type, r_indx; | |
| cec5225b YZ |
4412 | enum elf_aarch64_stub_type stub_type; |
| 4413 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
| a06ea964 NC |
4414 | asection *sym_sec; |
| 4415 | bfd_vma sym_value; | |
| 4416 | bfd_vma destination; | |
| cec5225b | 4417 | struct elf_aarch64_link_hash_entry *hash; |
| a06ea964 NC |
4418 | const char *sym_name; |
| 4419 | char *stub_name; | |
| 4420 | const asection *id_sec; | |
| 4421 | unsigned char st_type; | |
| 4422 | bfd_size_type len; | |
| 4423 | ||
| cec5225b YZ |
4424 | r_type = ELFNN_R_TYPE (irela->r_info); |
| 4425 | r_indx = ELFNN_R_SYM (irela->r_info); | |
| a06ea964 NC |
4426 | |
| 4427 | if (r_type >= (unsigned int) R_AARCH64_end) | |
| 4428 | { | |
| 4429 | bfd_set_error (bfd_error_bad_value); | |
| 4430 | error_ret_free_internal: | |
| 4431 | if (elf_section_data (section)->relocs == NULL) | |
| 4432 | free (internal_relocs); | |
| 4433 | goto error_ret_free_local; | |
| 4434 | } | |
| 4435 | ||
| 4436 | /* Only look for stubs on unconditional branch and | |
| 4437 | branch and link instructions. */ | |
| a6bb11b2 YZ |
4438 | if (r_type != (unsigned int) AARCH64_R (CALL26) |
| 4439 | && r_type != (unsigned int) AARCH64_R (JUMP26)) | |
| a06ea964 NC |
4440 | continue; |
| 4441 | ||
| 4442 | /* Now determine the call target, its name, value, | |
| 4443 | section. */ | |
| 4444 | sym_sec = NULL; | |
| 4445 | sym_value = 0; | |
| 4446 | destination = 0; | |
| 4447 | hash = NULL; | |
| 4448 | sym_name = NULL; | |
| 4449 | if (r_indx < symtab_hdr->sh_info) | |
| 4450 | { | |
| 4451 | /* It's a local symbol. */ | |
| 4452 | Elf_Internal_Sym *sym; | |
| 4453 | Elf_Internal_Shdr *hdr; | |
| 4454 | ||
| 4455 | if (local_syms == NULL) | |
| 4456 | { | |
| 4457 | local_syms | |
| 4458 | = (Elf_Internal_Sym *) symtab_hdr->contents; | |
| 4459 | if (local_syms == NULL) | |
| 4460 | local_syms | |
| 4461 | = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
| 4462 | symtab_hdr->sh_info, 0, | |
| 4463 | NULL, NULL, NULL); | |
| 4464 | if (local_syms == NULL) | |
| 4465 | goto error_ret_free_internal; | |
| 4466 | } | |
| 4467 | ||
| 4468 | sym = local_syms + r_indx; | |
| 4469 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
| 4470 | sym_sec = hdr->bfd_section; | |
| 4471 | if (!sym_sec) | |
| 4472 | /* This is an undefined symbol. It can never | |
| 4473 | be resolved. */ | |
| 4474 | continue; | |
| 4475 | ||
| 4476 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
| 4477 | sym_value = sym->st_value; | |
| 4478 | destination = (sym_value + irela->r_addend | |
| 4479 | + sym_sec->output_offset | |
| 4480 | + sym_sec->output_section->vma); | |
| 4481 | st_type = ELF_ST_TYPE (sym->st_info); | |
| 4482 | sym_name | |
| 4483 | = bfd_elf_string_from_elf_section (input_bfd, | |
| 4484 | symtab_hdr->sh_link, | |
| 4485 | sym->st_name); | |
| 4486 | } | |
| 4487 | else | |
| 4488 | { | |
| 4489 | int e_indx; | |
| 4490 | ||
| 4491 | e_indx = r_indx - symtab_hdr->sh_info; | |
| cec5225b | 4492 | hash = ((struct elf_aarch64_link_hash_entry *) |
| a06ea964 NC |
4493 | elf_sym_hashes (input_bfd)[e_indx]); |
| 4494 | ||
| 4495 | while (hash->root.root.type == bfd_link_hash_indirect | |
| 4496 | || hash->root.root.type == bfd_link_hash_warning) | |
| cec5225b | 4497 | hash = ((struct elf_aarch64_link_hash_entry *) |
| a06ea964 NC |
4498 | hash->root.root.u.i.link); |
| 4499 | ||
| 4500 | if (hash->root.root.type == bfd_link_hash_defined | |
| 4501 | || hash->root.root.type == bfd_link_hash_defweak) | |
| 4502 | { | |
| cec5225b YZ |
4503 | struct elf_aarch64_link_hash_table *globals = |
| 4504 | elf_aarch64_hash_table (info); | |
| a06ea964 NC |
4505 | sym_sec = hash->root.root.u.def.section; |
| 4506 | sym_value = hash->root.root.u.def.value; | |
| 4507 | /* For a destination in a shared library, | |
| 4508 | use the PLT stub as target address to | |
| 4509 | decide whether a branch stub is | |
| 4510 | needed. */ | |
| 4511 | if (globals->root.splt != NULL && hash != NULL | |
| 4512 | && hash->root.plt.offset != (bfd_vma) - 1) | |
| 4513 | { | |
| 4514 | sym_sec = globals->root.splt; | |
| 4515 | sym_value = hash->root.plt.offset; | |
| 4516 | if (sym_sec->output_section != NULL) | |
| 4517 | destination = (sym_value | |
| 4518 | + sym_sec->output_offset | |
| 4519 | + | |
| 4520 | sym_sec->output_section->vma); | |
| 4521 | } | |
| 4522 | else if (sym_sec->output_section != NULL) | |
| 4523 | destination = (sym_value + irela->r_addend | |
| 4524 | + sym_sec->output_offset | |
| 4525 | + sym_sec->output_section->vma); | |
| 4526 | } | |
| 4527 | else if (hash->root.root.type == bfd_link_hash_undefined | |
| 4528 | || (hash->root.root.type | |
| 4529 | == bfd_link_hash_undefweak)) | |
| 4530 | { | |
| 4531 | /* For a shared library, use the PLT stub as | |
| 4532 | target address to decide whether a long | |
| 4533 | branch stub is needed. | |
| 4534 | For absolute code, they cannot be handled. */ | |
| cec5225b YZ |
4535 | struct elf_aarch64_link_hash_table *globals = |
| 4536 | elf_aarch64_hash_table (info); | |
| a06ea964 NC |
4537 | |
| 4538 | if (globals->root.splt != NULL && hash != NULL | |
| 4539 | && hash->root.plt.offset != (bfd_vma) - 1) | |
| 4540 | { | |
| 4541 | sym_sec = globals->root.splt; | |
| 4542 | sym_value = hash->root.plt.offset; | |
| 4543 | if (sym_sec->output_section != NULL) | |
| 4544 | destination = (sym_value | |
| 4545 | + sym_sec->output_offset | |
| 4546 | + | |
| 4547 | sym_sec->output_section->vma); | |
| 4548 | } | |
| 4549 | else | |
| 4550 | continue; | |
| 4551 | } | |
| 4552 | else | |
| 4553 | { | |
| 4554 | bfd_set_error (bfd_error_bad_value); | |
| 4555 | goto error_ret_free_internal; | |
| 4556 | } | |
| 4557 | st_type = ELF_ST_TYPE (hash->root.type); | |
| 4558 | sym_name = hash->root.root.root.string; | |
| 4559 | } | |
| 4560 | ||
| 4561 | /* Determine what (if any) linker stub is needed. */ | |
| 9a228467 JW |
4562 | stub_type = aarch64_type_of_stub (section, irela, sym_sec, |
| 4563 | st_type, destination); | |
| a06ea964 NC |
4564 | if (stub_type == aarch64_stub_none) |
| 4565 | continue; | |
| 4566 | ||
| 4567 | /* Support for grouping stub sections. */ | |
| 4568 | id_sec = htab->stub_group[section->id].link_sec; | |
| 4569 | ||
| 4570 | /* Get the name of this stub. */ | |
| cec5225b | 4571 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, hash, |
| a06ea964 NC |
4572 | irela); |
| 4573 | if (!stub_name) | |
| 4574 | goto error_ret_free_internal; | |
| 4575 | ||
| 4576 | stub_entry = | |
| 4577 | aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
| 0a1b45a2 | 4578 | stub_name, false, false); |
| a06ea964 NC |
4579 | if (stub_entry != NULL) |
| 4580 | { | |
| 4581 | /* The proper stub has already been created. */ | |
| 4582 | free (stub_name); | |
| 3da64fe4 RA |
4583 | /* Always update this stub's target since it may have |
| 4584 | changed after layout. */ | |
| 4585 | stub_entry->target_value = sym_value + irela->r_addend; | |
| a06ea964 NC |
4586 | continue; |
| 4587 | } | |
| 4588 | ||
| ef857521 MS |
4589 | stub_entry = _bfd_aarch64_add_stub_entry_in_group |
| 4590 | (stub_name, section, htab); | |
| a06ea964 NC |
4591 | if (stub_entry == NULL) |
| 4592 | { | |
| 4593 | free (stub_name); | |
| 4594 | goto error_ret_free_internal; | |
| 4595 | } | |
| 4596 | ||
| 2f340668 | 4597 | stub_entry->target_value = sym_value + irela->r_addend; |
| a06ea964 NC |
4598 | stub_entry->target_section = sym_sec; |
| 4599 | stub_entry->stub_type = stub_type; | |
| 4600 | stub_entry->h = hash; | |
| 4601 | stub_entry->st_type = st_type; | |
| 4602 | ||
| 4603 | if (sym_name == NULL) | |
| 4604 | sym_name = "unnamed"; | |
| 4605 | len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name); | |
| 4606 | stub_entry->output_name = bfd_alloc (htab->stub_bfd, len); | |
| 4607 | if (stub_entry->output_name == NULL) | |
| 4608 | { | |
| 4609 | free (stub_name); | |
| 4610 | goto error_ret_free_internal; | |
| 4611 | } | |
| 4612 | ||
| 4613 | snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME, | |
| 4614 | sym_name); | |
| 4615 | ||
| 0a1b45a2 | 4616 | stub_changed = true; |
| a06ea964 NC |
4617 | } |
| 4618 | ||
| 4619 | /* We're done with the internal relocs, free them. */ | |
| 4620 | if (elf_section_data (section)->relocs == NULL) | |
| 4621 | free (internal_relocs); | |
| 4622 | } | |
| 4623 | } | |
| 4624 | ||
| 4625 | if (!stub_changed) | |
| 4626 | break; | |
| 4627 | ||
| 13f622ec | 4628 | _bfd_aarch64_resize_stubs (htab); |
| a06ea964 NC |
4629 | |
| 4630 | /* Ask the linker to do its stuff. */ | |
| 4631 | (*htab->layout_sections_again) (); | |
| 0a1b45a2 | 4632 | stub_changed = false; |
| a06ea964 NC |
4633 | } |
| 4634 | ||
| 0a1b45a2 | 4635 | return true; |
| a06ea964 | 4636 | |
| dc1e8a47 | 4637 | error_ret_free_local: |
| 0a1b45a2 | 4638 | return false; |
| a06ea964 NC |
4639 | } |
| 4640 | ||
| 4641 | /* Build all the stubs associated with the current output file. The | |
| 4642 | stubs are kept in a hash table attached to the main linker hash | |
| 4643 | table. We also set up the .plt entries for statically linked PIC | |
| 4644 | functions here. This function is called via aarch64_elf_finish in the | |
| 4645 | linker. */ | |
| 4646 | ||
| 0a1b45a2 | 4647 | bool |
| cec5225b | 4648 | elfNN_aarch64_build_stubs (struct bfd_link_info *info) |
| a06ea964 NC |
4649 | { |
| 4650 | asection *stub_sec; | |
| 4651 | struct bfd_hash_table *table; | |
| cec5225b | 4652 | struct elf_aarch64_link_hash_table *htab; |
| a06ea964 | 4653 | |
| cec5225b | 4654 | htab = elf_aarch64_hash_table (info); |
| a06ea964 NC |
4655 | |
| 4656 | for (stub_sec = htab->stub_bfd->sections; | |
| 4657 | stub_sec != NULL; stub_sec = stub_sec->next) | |
| 4658 | { | |
| 4659 | bfd_size_type size; | |
| 4660 | ||
| 4661 | /* Ignore non-stub sections. */ | |
| 4662 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
| 4663 | continue; | |
| 4664 | ||
| 4665 | /* Allocate memory to hold the linker stubs. */ | |
| 4666 | size = stub_sec->size; | |
| 4667 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); | |
| 4668 | if (stub_sec->contents == NULL && size != 0) | |
| 0a1b45a2 | 4669 | return false; |
| a06ea964 | 4670 | stub_sec->size = 0; |
| 61865519 | 4671 | |
| 9a2ebffd JW |
4672 | /* Add a branch around the stub section, and a nop, to keep it 8 byte |
| 4673 | aligned, as long branch stubs contain a 64-bit address. */ | |
| 61865519 | 4674 | bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents); |
| 9a2ebffd JW |
4675 | bfd_putl32 (INSN_NOP, stub_sec->contents + 4); |
| 4676 | stub_sec->size += 8; | |
| a06ea964 NC |
4677 | } |
| 4678 | ||
| 4679 | /* Build the stubs as directed by the stub hash table. */ | |
| 4680 | table = &htab->stub_hash_table; | |
| 4681 | bfd_hash_traverse (table, aarch64_build_one_stub, info); | |
| 4682 | ||
| 0a1b45a2 | 4683 | return true; |
| a06ea964 NC |
4684 | } |
| 4685 | ||
| 4686 | ||
| 4687 | /* Add an entry to the code/data map for section SEC. */ | |
| 4688 | ||
| 4689 | static void | |
| cec5225b | 4690 | elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma) |
| a06ea964 NC |
4691 | { |
| 4692 | struct _aarch64_elf_section_data *sec_data = | |
| cec5225b | 4693 | elf_aarch64_section_data (sec); |
| a06ea964 NC |
4694 | unsigned int newidx; |
| 4695 | ||
| 4696 | if (sec_data->map == NULL) | |
| 4697 | { | |
| cec5225b | 4698 | sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map)); |
| a06ea964 NC |
4699 | sec_data->mapcount = 0; |
| 4700 | sec_data->mapsize = 1; | |
| 4701 | } | |
| 4702 | ||
| 4703 | newidx = sec_data->mapcount++; | |
| 4704 | ||
| 4705 | if (sec_data->mapcount > sec_data->mapsize) | |
| 4706 | { | |
| 4707 | sec_data->mapsize *= 2; | |
| 4708 | sec_data->map = bfd_realloc_or_free | |
| cec5225b | 4709 | (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map)); |
| a06ea964 NC |
4710 | } |
| 4711 | ||
| 4712 | if (sec_data->map) | |
| 4713 | { | |
| 4714 | sec_data->map[newidx].vma = vma; | |
| 4715 | sec_data->map[newidx].type = type; | |
| 4716 | } | |
| 4717 | } | |
| 4718 | ||
| 4719 | ||
| 4720 | /* Initialise maps of insn/data for input BFDs. */ | |
| 4721 | void | |
| cec5225b | 4722 | bfd_elfNN_aarch64_init_maps (bfd *abfd) |
| a06ea964 NC |
4723 | { |
| 4724 | Elf_Internal_Sym *isymbuf; | |
| 4725 | Elf_Internal_Shdr *hdr; | |
| 4726 | unsigned int i, localsyms; | |
| 4727 | ||
| 4728 | /* Make sure that we are dealing with an AArch64 elf binary. */ | |
| 4729 | if (!is_aarch64_elf (abfd)) | |
| 4730 | return; | |
| 4731 | ||
| 4732 | if ((abfd->flags & DYNAMIC) != 0) | |
| 68fcca92 | 4733 | return; |
| a06ea964 NC |
4734 | |
| 4735 | hdr = &elf_symtab_hdr (abfd); | |
| 4736 | localsyms = hdr->sh_info; | |
| 4737 | ||
| 4738 | /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field | |
| 4739 | should contain the number of local symbols, which should come before any | |
| 4740 | global symbols. Mapping symbols are always local. */ | |
| 4741 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL); | |
| 4742 | ||
| 4743 | /* No internal symbols read? Skip this BFD. */ | |
| 4744 | if (isymbuf == NULL) | |
| 4745 | return; | |
| 4746 | ||
| 4747 | for (i = 0; i < localsyms; i++) | |
| 4748 | { | |
| 4749 | Elf_Internal_Sym *isym = &isymbuf[i]; | |
| 4750 | asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
| 4751 | const char *name; | |
| 4752 | ||
| 4753 | if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL) | |
| 4754 | { | |
| 4755 | name = bfd_elf_string_from_elf_section (abfd, | |
| 4756 | hdr->sh_link, | |
| 4757 | isym->st_name); | |
| 4758 | ||
| 4759 | if (bfd_is_aarch64_special_symbol_name | |
| 4760 | (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP)) | |
| cec5225b | 4761 | elfNN_aarch64_section_map_add (sec, name[1], isym->st_value); |
| a06ea964 NC |
4762 | } |
| 4763 | } | |
| 4764 | } | |
| 4765 | ||
| 37c18eed SD |
4766 | static void |
| 4767 | setup_plt_values (struct bfd_link_info *link_info, | |
| 4768 | aarch64_plt_type plt_type) | |
| 4769 | { | |
| 4770 | struct elf_aarch64_link_hash_table *globals; | |
| 4771 | globals = elf_aarch64_hash_table (link_info); | |
| 4772 | ||
| 1dbade74 SD |
4773 | if (plt_type == PLT_BTI_PAC) |
| 4774 | { | |
| 68bb0359 | 4775 | globals->plt0_entry = elfNN_aarch64_small_plt0_bti_entry; |
| 1dbade74 SD |
4776 | |
| 4777 | /* Only in ET_EXEC we need PLTn with BTI. */ | |
| 4778 | if (bfd_link_pde (link_info)) | |
| 4779 | { | |
| 4780 | globals->plt_entry_size = PLT_BTI_PAC_SMALL_ENTRY_SIZE; | |
| 4781 | globals->plt_entry = elfNN_aarch64_small_plt_bti_pac_entry; | |
| 4782 | } | |
| 4783 | else | |
| 4784 | { | |
| 4785 | globals->plt_entry_size = PLT_PAC_SMALL_ENTRY_SIZE; | |
| 4786 | globals->plt_entry = elfNN_aarch64_small_plt_pac_entry; | |
| 4787 | } | |
| 4788 | } | |
| 4789 | else if (plt_type == PLT_BTI) | |
| 37c18eed | 4790 | { |
| 37c18eed | 4791 | globals->plt0_entry = elfNN_aarch64_small_plt0_bti_entry; |
| 37c18eed SD |
4792 | |
| 4793 | /* Only in ET_EXEC we need PLTn with BTI. */ | |
| 4794 | if (bfd_link_pde (link_info)) | |
| 4795 | { | |
| 4796 | globals->plt_entry_size = PLT_BTI_SMALL_ENTRY_SIZE; | |
| 4797 | globals->plt_entry = elfNN_aarch64_small_plt_bti_entry; | |
| 4798 | } | |
| 4799 | } | |
| 1dbade74 SD |
4800 | else if (plt_type == PLT_PAC) |
| 4801 | { | |
| 1dbade74 SD |
4802 | globals->plt_entry_size = PLT_PAC_SMALL_ENTRY_SIZE; |
| 4803 | globals->plt_entry = elfNN_aarch64_small_plt_pac_entry; | |
| 4804 | } | |
| 37c18eed SD |
4805 | } |
| 4806 | ||
| a06ea964 NC |
4807 | /* Set option values needed during linking. */ |
| 4808 | void | |
| cec5225b | 4809 | bfd_elfNN_aarch64_set_options (struct bfd *output_bfd, |
| a06ea964 NC |
4810 | struct bfd_link_info *link_info, |
| 4811 | int no_enum_warn, | |
| 68fcca92 | 4812 | int no_wchar_warn, int pic_veneer, |
| 4106101c | 4813 | int fix_erratum_835769, |
| 739b5c9c | 4814 | erratum_84319_opts fix_erratum_843419, |
| 37c18eed SD |
4815 | int no_apply_dynamic_relocs, |
| 4816 | aarch64_bti_pac_info bp_info) | |
| a06ea964 | 4817 | { |
| cec5225b | 4818 | struct elf_aarch64_link_hash_table *globals; |
| a06ea964 | 4819 | |
| cec5225b | 4820 | globals = elf_aarch64_hash_table (link_info); |
| a06ea964 | 4821 | globals->pic_veneer = pic_veneer; |
| 68fcca92 | 4822 | globals->fix_erratum_835769 = fix_erratum_835769; |
| 739b5c9c TC |
4823 | /* If the default options are used, then ERRAT_ADR will be set by default |
| 4824 | which will enable the ADRP->ADR workaround for the erratum 843419 | |
| 4825 | workaround. */ | |
| 4106101c | 4826 | globals->fix_erratum_843419 = fix_erratum_843419; |
| 1f56df9d | 4827 | globals->no_apply_dynamic_relocs = no_apply_dynamic_relocs; |
| a06ea964 NC |
4828 | |
| 4829 | BFD_ASSERT (is_aarch64_elf (output_bfd)); | |
| 4830 | elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn; | |
| 4831 | elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn; | |
| 37c18eed SD |
4832 | |
| 4833 | switch (bp_info.bti_type) | |
| 4834 | { | |
| 4835 | case BTI_WARN: | |
| 4836 | elf_aarch64_tdata (output_bfd)->no_bti_warn = 0; | |
| 4837 | elf_aarch64_tdata (output_bfd)->gnu_and_prop | |
| 4838 | |= GNU_PROPERTY_AARCH64_FEATURE_1_BTI; | |
| 4839 | break; | |
| 4840 | ||
| 4841 | default: | |
| 4842 | break; | |
| 4843 | } | |
| 4844 | elf_aarch64_tdata (output_bfd)->plt_type = bp_info.plt_type; | |
| 4845 | setup_plt_values (link_info, bp_info.plt_type); | |
| a06ea964 NC |
4846 | } |
| 4847 | ||
| a06ea964 NC |
4848 | static bfd_vma |
| 4849 | aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h, | |
| cec5225b | 4850 | struct elf_aarch64_link_hash_table |
| a06ea964 NC |
4851 | *globals, struct bfd_link_info *info, |
| 4852 | bfd_vma value, bfd *output_bfd, | |
| 0a1b45a2 | 4853 | bool *unresolved_reloc_p) |
| a06ea964 NC |
4854 | { |
| 4855 | bfd_vma off = (bfd_vma) - 1; | |
| 4856 | asection *basegot = globals->root.sgot; | |
| 0a1b45a2 | 4857 | bool dyn = globals->root.dynamic_sections_created; |
| a06ea964 NC |
4858 | |
| 4859 | if (h != NULL) | |
| 4860 | { | |
| a6bb11b2 | 4861 | BFD_ASSERT (basegot != NULL); |
| a06ea964 NC |
4862 | off = h->got.offset; |
| 4863 | BFD_ASSERT (off != (bfd_vma) - 1); | |
| 0e1862bb L |
4864 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h) |
| 4865 | || (bfd_link_pic (info) | |
| a06ea964 NC |
4866 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
| 4867 | || (ELF_ST_VISIBILITY (h->other) | |
| 4868 | && h->root.type == bfd_link_hash_undefweak)) | |
| 4869 | { | |
| 4870 | /* This is actually a static link, or it is a -Bsymbolic link | |
| 4871 | and the symbol is defined locally. We must initialize this | |
| 4872 | entry in the global offset table. Since the offset must | |
| a6bb11b2 YZ |
4873 | always be a multiple of 8 (4 in the case of ILP32), we use |
| 4874 | the least significant bit to record whether we have | |
| 4875 | initialized it already. | |
| a06ea964 NC |
4876 | When doing a dynamic link, we create a .rel(a).got relocation |
| 4877 | entry to initialize the value. This is done in the | |
| 4878 | finish_dynamic_symbol routine. */ | |
| 4879 | if ((off & 1) != 0) | |
| 4880 | off &= ~1; | |
| 4881 | else | |
| 4882 | { | |
| cec5225b | 4883 | bfd_put_NN (output_bfd, value, basegot->contents + off); |
| a06ea964 NC |
4884 | h->got.offset |= 1; |
| 4885 | } | |
| 4886 | } | |
| 4887 | else | |
| 0a1b45a2 | 4888 | *unresolved_reloc_p = false; |
| a06ea964 NC |
4889 | |
| 4890 | off = off + basegot->output_section->vma + basegot->output_offset; | |
| 4891 | } | |
| 4892 | ||
| 4893 | return off; | |
| 4894 | } | |
| 4895 | ||
| 4896 | /* Change R_TYPE to a more efficient access model where possible, | |
| 4897 | return the new reloc type. */ | |
| 4898 | ||
| a6bb11b2 YZ |
4899 | static bfd_reloc_code_real_type |
| 4900 | aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type, | |
| 976f1663 MM |
4901 | struct elf_link_hash_entry *h, |
| 4902 | struct bfd_link_info *info) | |
| a06ea964 | 4903 | { |
| 976f1663 MM |
4904 | bool local_exec = bfd_link_executable (info) |
| 4905 | && SYMBOL_REFERENCES_LOCAL (info, h); | |
| a6bb11b2 | 4906 | |
| a06ea964 NC |
4907 | switch (r_type) |
| 4908 | { | |
| a6bb11b2 | 4909 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
| ce336788 | 4910 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
| 976f1663 | 4911 | return (local_exec |
| a6bb11b2 YZ |
4912 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 |
| 4913 | : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21); | |
| 4914 | ||
| 389b8029 | 4915 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
| 976f1663 | 4916 | return (local_exec |
| 389b8029 MS |
4917 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC |
| 4918 | : r_type); | |
| 4919 | ||
| 1ada945d | 4920 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
| 976f1663 | 4921 | return (local_exec |
| 1ada945d MS |
4922 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 |
| 4923 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
| 4924 | ||
| 0484b454 | 4925 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
| 976f1663 | 4926 | return (local_exec |
| 0484b454 RL |
4927 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC |
| 4928 | : BFD_RELOC_AARCH64_NONE); | |
| 4929 | ||
| 4930 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
| 976f1663 | 4931 | return (local_exec |
| 0484b454 RL |
4932 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC |
| 4933 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC); | |
| 4934 | ||
| 4935 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
| 976f1663 | 4936 | return (local_exec |
| 0484b454 RL |
4937 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 |
| 4938 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1); | |
| 4939 | ||
| a6bb11b2 | 4940 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
| ce336788 | 4941 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
| 976f1663 | 4942 | return (local_exec |
| a6bb11b2 YZ |
4943 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC |
| 4944 | : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC); | |
| 4945 | ||
| 4946 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: | |
| 976f1663 | 4947 | return local_exec ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type; |
| a6bb11b2 YZ |
4948 | |
| 4949 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
| 976f1663 | 4950 | return local_exec ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type; |
| a6bb11b2 | 4951 | |
| 043bf05a MS |
4952 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
| 4953 | return r_type; | |
| 4954 | ||
| 3c12b054 | 4955 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
| 976f1663 | 4956 | return (local_exec |
| 3c12b054 MS |
4957 | ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 |
| 4958 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
| 4959 | ||
| 0484b454 | 4960 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
| f955cccf | 4961 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
| a6bb11b2 | 4962 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
| a06ea964 | 4963 | /* Instructions with these relocations will become NOPs. */ |
| a6bb11b2 YZ |
4964 | return BFD_RELOC_AARCH64_NONE; |
| 4965 | ||
| 259364ad JW |
4966 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
| 4967 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: | |
| 4968 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: | |
| 976f1663 | 4969 | return local_exec ? BFD_RELOC_AARCH64_NONE : r_type; |
| 259364ad | 4970 | |
| ac734732 RL |
4971 | #if ARCH_SIZE == 64 |
| 4972 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: | |
| 976f1663 | 4973 | return local_exec |
| ac734732 RL |
4974 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC |
| 4975 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC; | |
| 4976 | ||
| 4977 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: | |
| 976f1663 | 4978 | return local_exec |
| ac734732 RL |
4979 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 |
| 4980 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1; | |
| 4981 | #endif | |
| 4982 | ||
| a6bb11b2 YZ |
4983 | default: |
| 4984 | break; | |
| a06ea964 NC |
4985 | } |
| 4986 | ||
| 4987 | return r_type; | |
| 4988 | } | |
| 4989 | ||
| 4990 | static unsigned int | |
| a6bb11b2 | 4991 | aarch64_reloc_got_type (bfd_reloc_code_real_type r_type) |
| a06ea964 NC |
4992 | { |
| 4993 | switch (r_type) | |
| 4994 | { | |
| a6bb11b2 YZ |
4995 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
| 4996 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
| 7018c030 | 4997 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
| ce336788 | 4998 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
| a2e1db00 | 4999 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
| 99ad26cb | 5000 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
| ce336788 | 5001 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
| dc8008f5 | 5002 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
| 74a1bfe1 | 5003 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
| a06ea964 NC |
5004 | return GOT_NORMAL; |
| 5005 | ||
| ce336788 | 5006 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
| a6bb11b2 | 5007 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
| 3c12b054 | 5008 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
| 7ba7cfe4 | 5009 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
| 94facae3 | 5010 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
| 73f925cc | 5011 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
| f69e4920 | 5012 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
| 77a69ff8 | 5013 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
| a06ea964 NC |
5014 | return GOT_TLS_GD; |
| 5015 | ||
| 0484b454 | 5016 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
| f955cccf | 5017 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
| a6bb11b2 | 5018 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
| 389b8029 | 5019 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
| a6bb11b2 | 5020 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
| a6bb11b2 | 5021 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
| f955cccf | 5022 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
| 1ada945d | 5023 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
| 0484b454 RL |
5024 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
| 5025 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
| 5026 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
| a06ea964 NC |
5027 | return GOT_TLSDESC_GD; |
| 5028 | ||
| a6bb11b2 | 5029 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
| a6bb11b2 | 5030 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
| ce336788 | 5031 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
| 043bf05a | 5032 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
| 3b957e5b RL |
5033 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
| 5034 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
| a06ea964 NC |
5035 | return GOT_TLS_IE; |
| 5036 | ||
| a6bb11b2 YZ |
5037 | default: |
| 5038 | break; | |
| a06ea964 NC |
5039 | } |
| 5040 | return GOT_UNKNOWN; | |
| 5041 | } | |
| 5042 | ||
| 0a1b45a2 | 5043 | static bool |
| a06ea964 NC |
5044 | aarch64_can_relax_tls (bfd *input_bfd, |
| 5045 | struct bfd_link_info *info, | |
| a6bb11b2 | 5046 | bfd_reloc_code_real_type r_type, |
| a06ea964 NC |
5047 | struct elf_link_hash_entry *h, |
| 5048 | unsigned long r_symndx) | |
| 5049 | { | |
| 5050 | unsigned int symbol_got_type; | |
| 5051 | unsigned int reloc_got_type; | |
| 5052 | ||
| 9331eea1 | 5053 | if (! IS_AARCH64_TLS_RELAX_RELOC (r_type)) |
| 0a1b45a2 | 5054 | return false; |
| a06ea964 | 5055 | |
| cec5225b | 5056 | symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx); |
| a06ea964 NC |
5057 | reloc_got_type = aarch64_reloc_got_type (r_type); |
| 5058 | ||
| 5059 | if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type)) | |
| 0a1b45a2 | 5060 | return true; |
| a06ea964 | 5061 | |
| 6dda7875 | 5062 | if (!bfd_link_executable (info)) |
| 0a1b45a2 | 5063 | return false; |
| a06ea964 NC |
5064 | |
| 5065 | if (h && h->root.type == bfd_link_hash_undefweak) | |
| 0a1b45a2 | 5066 | return false; |
| a06ea964 | 5067 | |
| 0a1b45a2 | 5068 | return true; |
| a06ea964 NC |
5069 | } |
| 5070 | ||
| a6bb11b2 YZ |
5071 | /* Given the relocation code R_TYPE, return the relaxed bfd reloc |
| 5072 | enumerator. */ | |
| 5073 | ||
| 5074 | static bfd_reloc_code_real_type | |
| a06ea964 NC |
5075 | aarch64_tls_transition (bfd *input_bfd, |
| 5076 | struct bfd_link_info *info, | |
| 5077 | unsigned int r_type, | |
| 5078 | struct elf_link_hash_entry *h, | |
| 5079 | unsigned long r_symndx) | |
| 5080 | { | |
| a6bb11b2 | 5081 | bfd_reloc_code_real_type bfd_r_type |
| 0aa13fee | 5082 | = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
| a06ea964 | 5083 | |
| a6bb11b2 YZ |
5084 | if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx)) |
| 5085 | return bfd_r_type; | |
| 5086 | ||
| 976f1663 | 5087 | return aarch64_tls_transition_without_check (bfd_r_type, h, info); |
| a06ea964 NC |
5088 | } |
| 5089 | ||
| 5090 | /* Return the base VMA address which should be subtracted from real addresses | |
| a6bb11b2 | 5091 | when resolving R_AARCH64_TLS_DTPREL relocation. */ |
| a06ea964 NC |
5092 | |
| 5093 | static bfd_vma | |
| 5094 | dtpoff_base (struct bfd_link_info *info) | |
| 5095 | { | |
| 5096 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
| 5097 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); | |
| 5098 | return elf_hash_table (info)->tls_sec->vma; | |
| 5099 | } | |
| 5100 | ||
| a06ea964 NC |
5101 | /* Return the base VMA address which should be subtracted from real addresses |
| 5102 | when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */ | |
| 5103 | ||
| 5104 | static bfd_vma | |
| 5105 | tpoff_base (struct bfd_link_info *info) | |
| 5106 | { | |
| 5107 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
| 5108 | ||
| 5109 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
| ac21917f | 5110 | BFD_ASSERT (htab->tls_sec != NULL); |
| a06ea964 NC |
5111 | |
| 5112 | bfd_vma base = align_power ((bfd_vma) TCB_SIZE, | |
| 5113 | htab->tls_sec->alignment_power); | |
| 5114 | return htab->tls_sec->vma - base; | |
| 5115 | } | |
| 5116 | ||
| 5117 | static bfd_vma * | |
| 5118 | symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
| 5119 | unsigned long r_symndx) | |
| 5120 | { | |
| 5121 | /* Calculate the address of the GOT entry for symbol | |
| 5122 | referred to in h. */ | |
| 5123 | if (h != NULL) | |
| 5124 | return &h->got.offset; | |
| 5125 | else | |
| 5126 | { | |
| 5127 | /* local symbol */ | |
| 5128 | struct elf_aarch64_local_symbol *l; | |
| 5129 | ||
| cec5225b | 5130 | l = elf_aarch64_locals (input_bfd); |
| a06ea964 NC |
5131 | return &l[r_symndx].got_offset; |
| 5132 | } | |
| 5133 | } | |
| 5134 | ||
| 5135 | static void | |
| 5136 | symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
| 5137 | unsigned long r_symndx) | |
| 5138 | { | |
| 5139 | bfd_vma *p; | |
| 5140 | p = symbol_got_offset_ref (input_bfd, h, r_symndx); | |
| 5141 | *p |= 1; | |
| 5142 | } | |
| 5143 | ||
| 5144 | static int | |
| 5145 | symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h, | |
| 5146 | unsigned long r_symndx) | |
| 5147 | { | |
| 5148 | bfd_vma value; | |
| 5149 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
| 5150 | return value & 1; | |
| 5151 | } | |
| 5152 | ||
| 5153 | static bfd_vma | |
| 5154 | symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
| 5155 | unsigned long r_symndx) | |
| 5156 | { | |
| 5157 | bfd_vma value; | |
| 5158 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
| 5159 | value &= ~1; | |
| 5160 | return value; | |
| 5161 | } | |
| 5162 | ||
| 5163 | static bfd_vma * | |
| 5164 | symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
| 5165 | unsigned long r_symndx) | |
| 5166 | { | |
| 5167 | /* Calculate the address of the GOT entry for symbol | |
| 5168 | referred to in h. */ | |
| 5169 | if (h != NULL) | |
| 5170 | { | |
| cec5225b YZ |
5171 | struct elf_aarch64_link_hash_entry *eh; |
| 5172 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
| a06ea964 NC |
5173 | return &eh->tlsdesc_got_jump_table_offset; |
| 5174 | } | |
| 5175 | else | |
| 5176 | { | |
| 5177 | /* local symbol */ | |
| 5178 | struct elf_aarch64_local_symbol *l; | |
| 5179 | ||
| cec5225b | 5180 | l = elf_aarch64_locals (input_bfd); |
| a06ea964 NC |
5181 | return &l[r_symndx].tlsdesc_got_jump_table_offset; |
| 5182 | } | |
| 5183 | } | |
| 5184 | ||
| 5185 | static void | |
| 5186 | symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
| 5187 | unsigned long r_symndx) | |
| 5188 | { | |
| 5189 | bfd_vma *p; | |
| 5190 | p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
| 5191 | *p |= 1; | |
| 5192 | } | |
| 5193 | ||
| 5194 | static int | |
| 5195 | symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd, | |
| 5196 | struct elf_link_hash_entry *h, | |
| 5197 | unsigned long r_symndx) | |
| 5198 | { | |
| 5199 | bfd_vma value; | |
| 5200 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
| 5201 | return value & 1; | |
| 5202 | } | |
| 5203 | ||
| 5204 | static bfd_vma | |
| 5205 | symbol_tlsdesc_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
| 5206 | unsigned long r_symndx) | |
| 5207 | { | |
| 5208 | bfd_vma value; | |
| 5209 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
| 5210 | value &= ~1; | |
| 5211 | return value; | |
| 5212 | } | |
| 5213 | ||
| 68fcca92 JW |
5214 | /* Data for make_branch_to_erratum_835769_stub(). */ |
| 5215 | ||
| 5216 | struct erratum_835769_branch_to_stub_data | |
| 5217 | { | |
| 4106101c | 5218 | struct bfd_link_info *info; |
| 68fcca92 JW |
5219 | asection *output_section; |
| 5220 | bfd_byte *contents; | |
| 5221 | }; | |
| 5222 | ||
| 5223 | /* Helper to insert branches to erratum 835769 stubs in the right | |
| 5224 | places for a particular section. */ | |
| 5225 | ||
| 0a1b45a2 | 5226 | static bool |
| 68fcca92 JW |
5227 | make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry, |
| 5228 | void *in_arg) | |
| 5229 | { | |
| 5230 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
| 5231 | struct erratum_835769_branch_to_stub_data *data; | |
| 5232 | bfd_byte *contents; | |
| 5233 | unsigned long branch_insn = 0; | |
| 5234 | bfd_vma veneered_insn_loc, veneer_entry_loc; | |
| 5235 | bfd_signed_vma branch_offset; | |
| 5236 | unsigned int target; | |
| 5237 | bfd *abfd; | |
| 5238 | ||
| 5239 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
| 5240 | data = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
| 5241 | ||
| 5242 | if (stub_entry->target_section != data->output_section | |
| 5243 | || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer) | |
| 0a1b45a2 | 5244 | return true; |
| 68fcca92 JW |
5245 | |
| 5246 | contents = data->contents; | |
| 5247 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
| 5248 | + stub_entry->target_section->output_offset | |
| 5249 | + stub_entry->target_value; | |
| 5250 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
| 5251 | + stub_entry->stub_sec->output_offset | |
| 5252 | + stub_entry->stub_offset; | |
| 5253 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
| 5254 | ||
| 5255 | abfd = stub_entry->target_section->owner; | |
| 5256 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
| 4eca0228 | 5257 | _bfd_error_handler |
| 90b6238f | 5258 | (_("%pB: error: erratum 835769 stub out " |
| 4eca0228 | 5259 | "of range (input file too large)"), abfd); |
| 68fcca92 JW |
5260 | |
| 5261 | target = stub_entry->target_value; | |
| 5262 | branch_insn = 0x14000000; | |
| 5263 | branch_offset >>= 2; | |
| 5264 | branch_offset &= 0x3ffffff; | |
| 5265 | branch_insn |= branch_offset; | |
| 5266 | bfd_putl32 (branch_insn, &contents[target]); | |
| 5267 | ||
| 0a1b45a2 | 5268 | return true; |
| 68fcca92 JW |
5269 | } |
| 5270 | ||
| 4106101c | 5271 | |
| 0a1b45a2 | 5272 | static bool |
| 4106101c MS |
5273 | _bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry, |
| 5274 | void *in_arg) | |
| 5275 | { | |
| 5276 | struct elf_aarch64_stub_hash_entry *stub_entry | |
| 5277 | = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
| 5278 | struct erratum_835769_branch_to_stub_data *data | |
| 5279 | = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
| 5280 | struct bfd_link_info *info; | |
| 5281 | struct elf_aarch64_link_hash_table *htab; | |
| 5282 | bfd_byte *contents; | |
| 5283 | asection *section; | |
| 5284 | bfd *abfd; | |
| 5285 | bfd_vma place; | |
| 5286 | uint32_t insn; | |
| 5287 | ||
| 5288 | info = data->info; | |
| 5289 | contents = data->contents; | |
| 5290 | section = data->output_section; | |
| 5291 | ||
| 5292 | htab = elf_aarch64_hash_table (info); | |
| 5293 | ||
| 5294 | if (stub_entry->target_section != section | |
| 5295 | || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer) | |
| 0a1b45a2 | 5296 | return true; |
| 4106101c | 5297 | |
| 739b5c9c TC |
5298 | BFD_ASSERT (((htab->fix_erratum_843419 & ERRAT_ADRP) && stub_entry->stub_sec) |
| 5299 | || (htab->fix_erratum_843419 & ERRAT_ADR)); | |
| 5300 | ||
| 5301 | /* Only update the stub section if we have one. We should always have one if | |
| 5302 | we're allowed to use the ADRP errata workaround, otherwise it is not | |
| 5303 | required. */ | |
| 5304 | if (stub_entry->stub_sec) | |
| 5305 | { | |
| 5306 | insn = bfd_getl32 (contents + stub_entry->target_value); | |
| 5307 | bfd_putl32 (insn, | |
| 5308 | stub_entry->stub_sec->contents + stub_entry->stub_offset); | |
| 5309 | } | |
| 4106101c MS |
5310 | |
| 5311 | place = (section->output_section->vma + section->output_offset | |
| 5312 | + stub_entry->adrp_offset); | |
| 5313 | insn = bfd_getl32 (contents + stub_entry->adrp_offset); | |
| 5314 | ||
| 9fca35fc | 5315 | if (!_bfd_aarch64_adrp_p (insn)) |
| 4106101c MS |
5316 | abort (); |
| 5317 | ||
| 5318 | bfd_signed_vma imm = | |
| 5319 | (_bfd_aarch64_sign_extend | |
| 5320 | ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33) | |
| 5321 | - (place & 0xfff)); | |
| 5322 | ||
| 739b5c9c | 5323 | if ((htab->fix_erratum_843419 & ERRAT_ADR) |
| 4106101c MS |
5324 | && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM)) |
| 5325 | { | |
| 5326 | insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm) | |
| 5327 | | AARCH64_RT (insn)); | |
| 5328 | bfd_putl32 (insn, contents + stub_entry->adrp_offset); | |
| 739b5c9c TC |
5329 | /* Stub is not needed, don't map it out. */ |
| 5330 | stub_entry->stub_type = aarch64_stub_none; | |
| 4106101c | 5331 | } |
| 739b5c9c | 5332 | else if (htab->fix_erratum_843419 & ERRAT_ADRP) |
| 4106101c MS |
5333 | { |
| 5334 | bfd_vma veneered_insn_loc; | |
| 5335 | bfd_vma veneer_entry_loc; | |
| 5336 | bfd_signed_vma branch_offset; | |
| 5337 | uint32_t branch_insn; | |
| 5338 | ||
| 5339 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
| 5340 | + stub_entry->target_section->output_offset | |
| 5341 | + stub_entry->target_value; | |
| 5342 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
| 5343 | + stub_entry->stub_sec->output_offset | |
| 5344 | + stub_entry->stub_offset; | |
| 5345 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
| 5346 | ||
| 5347 | abfd = stub_entry->target_section->owner; | |
| 5348 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
| 4eca0228 | 5349 | _bfd_error_handler |
| 90b6238f | 5350 | (_("%pB: error: erratum 843419 stub out " |
| 4106101c MS |
5351 | "of range (input file too large)"), abfd); |
| 5352 | ||
| 5353 | branch_insn = 0x14000000; | |
| 5354 | branch_offset >>= 2; | |
| 5355 | branch_offset &= 0x3ffffff; | |
| 5356 | branch_insn |= branch_offset; | |
| 5357 | bfd_putl32 (branch_insn, contents + stub_entry->target_value); | |
| 5358 | } | |
| 739b5c9c TC |
5359 | else |
| 5360 | { | |
| 5361 | abfd = stub_entry->target_section->owner; | |
| 5362 | _bfd_error_handler | |
| b8281767 AM |
5363 | (_("%pB: error: erratum 843419 immediate 0x%" PRIx64 |
| 5364 | " out of range for ADR (input file too large) and " | |
| 739b5c9c | 5365 | "--fix-cortex-a53-843419=adr used. Run the linker with " |
| b8281767 AM |
5366 | "--fix-cortex-a53-843419=full instead"), |
| 5367 | abfd, (uint64_t) (bfd_vma) imm); | |
| 739b5c9c TC |
5368 | bfd_set_error (bfd_error_bad_value); |
| 5369 | /* This function is called inside a hashtable traversal and the error | |
| 5370 | handlers called above turn into non-fatal errors. Which means this | |
| 5371 | case ld returns an exit code 0 and also produces a broken object file. | |
| 5372 | To prevent this, issue a hard abort. */ | |
| 5373 | BFD_FAIL (); | |
| 5374 | } | |
| 0a1b45a2 | 5375 | return true; |
| 4106101c MS |
5376 | } |
| 5377 | ||
| 5378 | ||
| 0a1b45a2 | 5379 | static bool |
| 68fcca92 JW |
5380 | elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 5381 | struct bfd_link_info *link_info, | |
| 5382 | asection *sec, | |
| 5383 | bfd_byte *contents) | |
| 5384 | ||
| 5385 | { | |
| 5386 | struct elf_aarch64_link_hash_table *globals = | |
| f872121a | 5387 | elf_aarch64_hash_table (link_info); |
| 68fcca92 JW |
5388 | |
| 5389 | if (globals == NULL) | |
| 0a1b45a2 | 5390 | return false; |
| 68fcca92 JW |
5391 | |
| 5392 | /* Fix code to point to erratum 835769 stubs. */ | |
| 5393 | if (globals->fix_erratum_835769) | |
| 5394 | { | |
| 5395 | struct erratum_835769_branch_to_stub_data data; | |
| 5396 | ||
| 4106101c | 5397 | data.info = link_info; |
| 68fcca92 JW |
5398 | data.output_section = sec; |
| 5399 | data.contents = contents; | |
| 5400 | bfd_hash_traverse (&globals->stub_hash_table, | |
| 5401 | make_branch_to_erratum_835769_stub, &data); | |
| 5402 | } | |
| 5403 | ||
| 4106101c MS |
5404 | if (globals->fix_erratum_843419) |
| 5405 | { | |
| 5406 | struct erratum_835769_branch_to_stub_data data; | |
| 5407 | ||
| 5408 | data.info = link_info; | |
| 5409 | data.output_section = sec; | |
| 5410 | data.contents = contents; | |
| 5411 | bfd_hash_traverse (&globals->stub_hash_table, | |
| 5412 | _bfd_aarch64_erratum_843419_branch_to_stub, &data); | |
| 5413 | } | |
| 5414 | ||
| 0a1b45a2 | 5415 | return false; |
| 68fcca92 JW |
5416 | } |
| 5417 | ||
| 2aff25ba JW |
5418 | /* Return TRUE if RELOC is a relocation against the base of GOT table. */ |
| 5419 | ||
| 0a1b45a2 | 5420 | static bool |
| 2aff25ba JW |
5421 | aarch64_relocation_aginst_gp_p (bfd_reloc_code_real_type reloc) |
| 5422 | { | |
| 5423 | return (reloc == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14 | |
| 5424 | || reloc == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 | |
| 5425 | || reloc == BFD_RELOC_AARCH64_LD64_GOTOFF_LO15 | |
| 5426 | || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC | |
| 5427 | || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G1); | |
| 5428 | } | |
| 5429 | ||
| 4e7fbb34 JW |
5430 | /* Perform a relocation as part of a final link. The input relocation type |
| 5431 | should be TLS relaxed. */ | |
| 5432 | ||
| a06ea964 | 5433 | static bfd_reloc_status_type |
| cec5225b | 5434 | elfNN_aarch64_final_link_relocate (reloc_howto_type *howto, |
| a06ea964 NC |
5435 | bfd *input_bfd, |
| 5436 | bfd *output_bfd, | |
| 5437 | asection *input_section, | |
| 5438 | bfd_byte *contents, | |
| 5439 | Elf_Internal_Rela *rel, | |
| 5440 | bfd_vma value, | |
| 5441 | struct bfd_link_info *info, | |
| 5442 | asection *sym_sec, | |
| 5443 | struct elf_link_hash_entry *h, | |
| 0a1b45a2 AM |
5444 | bool *unresolved_reloc_p, |
| 5445 | bool save_addend, | |
| 1419bbe5 WN |
5446 | bfd_vma *saved_addend, |
| 5447 | Elf_Internal_Sym *sym) | |
| a06ea964 | 5448 | { |
| 1419bbe5 | 5449 | Elf_Internal_Shdr *symtab_hdr; |
| a06ea964 | 5450 | unsigned int r_type = howto->type; |
| a6bb11b2 YZ |
5451 | bfd_reloc_code_real_type bfd_r_type |
| 5452 | = elfNN_aarch64_bfd_reloc_from_howto (howto); | |
| a06ea964 NC |
5453 | unsigned long r_symndx; |
| 5454 | bfd_byte *hit_data = contents + rel->r_offset; | |
| 96d01d93 | 5455 | bfd_vma place, off, got_entry_addr = 0; |
| a06ea964 | 5456 | bfd_signed_vma signed_addend; |
| cec5225b | 5457 | struct elf_aarch64_link_hash_table *globals; |
| 0a1b45a2 AM |
5458 | bool weak_undef_p; |
| 5459 | bool relative_reloc; | |
| b53b1bed | 5460 | asection *base_got; |
| ff07562f | 5461 | bfd_vma orig_value = value; |
| 0a1b45a2 AM |
5462 | bool resolved_to_zero; |
| 5463 | bool abs_symbol_p; | |
| a06ea964 | 5464 | |
| cec5225b | 5465 | globals = elf_aarch64_hash_table (info); |
| a06ea964 | 5466 | |
| 1419bbe5 WN |
5467 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
| 5468 | ||
| a06ea964 NC |
5469 | BFD_ASSERT (is_aarch64_elf (input_bfd)); |
| 5470 | ||
| cec5225b | 5471 | r_symndx = ELFNN_R_SYM (rel->r_info); |
| a06ea964 | 5472 | |
| a06ea964 NC |
5473 | place = input_section->output_section->vma |
| 5474 | + input_section->output_offset + rel->r_offset; | |
| 5475 | ||
| 5476 | /* Get addend, accumulating the addend for consecutive relocs | |
| 5477 | which refer to the same offset. */ | |
| 5478 | signed_addend = saved_addend ? *saved_addend : 0; | |
| 5479 | signed_addend += rel->r_addend; | |
| 5480 | ||
| 5481 | weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak | |
| 5482 | : bfd_is_und_section (sym_sec)); | |
| c691de6a | 5483 | abs_symbol_p = h != NULL && bfd_is_abs_symbol (&h->root); |
| 0c1ded8d | 5484 | |
| a6bb11b2 | 5485 | |
| 1419bbe5 WN |
5486 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
| 5487 | it here if it is defined in a non-shared object. */ | |
| 5488 | if (h != NULL | |
| 5489 | && h->type == STT_GNU_IFUNC | |
| 5490 | && h->def_regular) | |
| 5491 | { | |
| 5492 | asection *plt; | |
| 5493 | const char *name; | |
| 99ad26cb | 5494 | bfd_vma addend = 0; |
| 1419bbe5 | 5495 | |
| 545bc2b3 SN |
5496 | if ((input_section->flags & SEC_ALLOC) == 0) |
| 5497 | { | |
| f657f8c4 NC |
5498 | /* If this is a SHT_NOTE section without SHF_ALLOC, treat |
| 5499 | STT_GNU_IFUNC symbol as STT_FUNC. */ | |
| 5500 | if (elf_section_type (input_section) == SHT_NOTE) | |
| 5501 | goto skip_ifunc; | |
| 5502 | ||
| 545bc2b3 SN |
5503 | /* Dynamic relocs are not propagated for SEC_DEBUGGING |
| 5504 | sections because such sections are not SEC_ALLOC and | |
| 5505 | thus ld.so will not process them. */ | |
| 5506 | if ((input_section->flags & SEC_DEBUGGING) != 0) | |
| 5507 | return bfd_reloc_ok; | |
| 5508 | ||
| 5509 | if (h->root.root.string) | |
| 5510 | name = h->root.root.string; | |
| 5511 | else | |
| 5512 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, NULL); | |
| 5513 | _bfd_error_handler | |
| 5514 | /* xgettext:c-format */ | |
| 2dcf00ce AM |
5515 | (_("%pB(%pA+%#" PRIx64 "): " |
| 5516 | "unresolvable %s relocation against symbol `%s'"), | |
| 5517 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
| 5518 | howto->name, name); | |
| 545bc2b3 | 5519 | bfd_set_error (bfd_error_bad_value); |
| 1d75a8e2 | 5520 | return bfd_reloc_notsupported; |
| 545bc2b3 SN |
5521 | } |
| 5522 | else if (h->plt.offset == (bfd_vma) -1) | |
| 5523 | goto bad_ifunc_reloc; | |
| 1419bbe5 WN |
5524 | |
| 5525 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
| 5526 | plt = globals->root.splt ? globals->root.splt : globals->root.iplt; | |
| 5527 | value = (plt->output_section->vma + plt->output_offset + h->plt.offset); | |
| 5528 | ||
| 5529 | switch (bfd_r_type) | |
| 5530 | { | |
| 5531 | default: | |
| dc1e8a47 | 5532 | bad_ifunc_reloc: |
| 1419bbe5 WN |
5533 | if (h->root.root.string) |
| 5534 | name = h->root.root.string; | |
| 5535 | else | |
| 5536 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
| 5537 | NULL); | |
| 4eca0228 | 5538 | _bfd_error_handler |
| 695344c0 | 5539 | /* xgettext:c-format */ |
| 871b3ab2 | 5540 | (_("%pB: relocation %s against STT_GNU_IFUNC " |
| 1419bbe5 WN |
5541 | "symbol `%s' isn't handled by %s"), input_bfd, |
| 5542 | howto->name, name, __FUNCTION__); | |
| 5543 | bfd_set_error (bfd_error_bad_value); | |
| 1d75a8e2 | 5544 | return bfd_reloc_notsupported; |
| 1419bbe5 WN |
5545 | |
| 5546 | case BFD_RELOC_AARCH64_NN: | |
| 5547 | if (rel->r_addend != 0) | |
| 5548 | { | |
| 5549 | if (h->root.root.string) | |
| 5550 | name = h->root.root.string; | |
| 5551 | else | |
| 5552 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
| 5553 | sym, NULL); | |
| 4eca0228 | 5554 | _bfd_error_handler |
| 695344c0 | 5555 | /* xgettext:c-format */ |
| 871b3ab2 | 5556 | (_("%pB: relocation %s against STT_GNU_IFUNC " |
| 2dcf00ce AM |
5557 | "symbol `%s' has non-zero addend: %" PRId64), |
| 5558 | input_bfd, howto->name, name, (int64_t) rel->r_addend); | |
| 1419bbe5 | 5559 | bfd_set_error (bfd_error_bad_value); |
| 1d75a8e2 | 5560 | return bfd_reloc_notsupported; |
| 1419bbe5 WN |
5561 | } |
| 5562 | ||
| 5563 | /* Generate dynamic relocation only when there is a | |
| 5564 | non-GOT reference in a shared object. */ | |
| 0e1862bb | 5565 | if (bfd_link_pic (info) && h->non_got_ref) |
| 1419bbe5 WN |
5566 | { |
| 5567 | Elf_Internal_Rela outrel; | |
| 5568 | asection *sreloc; | |
| 5569 | ||
| 5570 | /* Need a dynamic relocation to get the real function | |
| 5571 | address. */ | |
| 5572 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
| 5573 | info, | |
| 5574 | input_section, | |
| 5575 | rel->r_offset); | |
| 5576 | if (outrel.r_offset == (bfd_vma) -1 | |
| 5577 | || outrel.r_offset == (bfd_vma) -2) | |
| 5578 | abort (); | |
| 5579 | ||
| 5580 | outrel.r_offset += (input_section->output_section->vma | |
| 5581 | + input_section->output_offset); | |
| 5582 | ||
| 5583 | if (h->dynindx == -1 | |
| 5584 | || h->forced_local | |
| 0e1862bb | 5585 | || bfd_link_executable (info)) |
| 1419bbe5 WN |
5586 | { |
| 5587 | /* This symbol is resolved locally. */ | |
| 5588 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
| 5589 | outrel.r_addend = (h->root.u.def.value | |
| 5590 | + h->root.u.def.section->output_section->vma | |
| 5591 | + h->root.u.def.section->output_offset); | |
| 5592 | } | |
| 5593 | else | |
| 5594 | { | |
| 5595 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); | |
| 5596 | outrel.r_addend = 0; | |
| 5597 | } | |
| 5598 | ||
| 5599 | sreloc = globals->root.irelifunc; | |
| 5600 | elf_append_rela (output_bfd, sreloc, &outrel); | |
| 5601 | ||
| 5602 | /* If this reloc is against an external symbol, we | |
| 5603 | do not want to fiddle with the addend. Otherwise, | |
| 5604 | we need to include the symbol value so that it | |
| 5605 | becomes an addend for the dynamic reloc. For an | |
| 5606 | internal symbol, we have updated addend. */ | |
| 5607 | return bfd_reloc_ok; | |
| 5608 | } | |
| 5609 | /* FALLTHROUGH */ | |
| 1419bbe5 | 5610 | case BFD_RELOC_AARCH64_CALL26: |
| ce336788 | 5611 | case BFD_RELOC_AARCH64_JUMP26: |
| 652afeef TC |
5612 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
| 5613 | place, value, | |
| 1419bbe5 WN |
5614 | signed_addend, |
| 5615 | weak_undef_p); | |
| 5616 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, | |
| 5617 | howto, value); | |
| 1419bbe5 WN |
5618 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
| 5619 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
| 7018c030 | 5620 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
| ce336788 | 5621 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
| 99ad26cb | 5622 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
| dc8008f5 | 5623 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
| 74a1bfe1 | 5624 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
| a2e1db00 | 5625 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
| ce336788 | 5626 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
| 1419bbe5 WN |
5627 | base_got = globals->root.sgot; |
| 5628 | off = h->got.offset; | |
| 5629 | ||
| 5630 | if (base_got == NULL) | |
| 5631 | abort (); | |
| 5632 | ||
| 5633 | if (off == (bfd_vma) -1) | |
| 5634 | { | |
| 5635 | bfd_vma plt_index; | |
| 5636 | ||
| 5637 | /* We can't use h->got.offset here to save state, or | |
| 5638 | even just remember the offset, as finish_dynamic_symbol | |
| 5639 | would use that as offset into .got. */ | |
| 5640 | ||
| 5641 | if (globals->root.splt != NULL) | |
| 5642 | { | |
| b1ee0cc4 WN |
5643 | plt_index = ((h->plt.offset - globals->plt_header_size) / |
| 5644 | globals->plt_entry_size); | |
| 1419bbe5 WN |
5645 | off = (plt_index + 3) * GOT_ENTRY_SIZE; |
| 5646 | base_got = globals->root.sgotplt; | |
| 5647 | } | |
| 5648 | else | |
| 5649 | { | |
| 5650 | plt_index = h->plt.offset / globals->plt_entry_size; | |
| 5651 | off = plt_index * GOT_ENTRY_SIZE; | |
| 5652 | base_got = globals->root.igotplt; | |
| 5653 | } | |
| 5654 | ||
| 5655 | if (h->dynindx == -1 | |
| 5656 | || h->forced_local | |
| 5657 | || info->symbolic) | |
| 5658 | { | |
| 5659 | /* This references the local definition. We must | |
| 5660 | initialize this entry in the global offset table. | |
| 5661 | Since the offset must always be a multiple of 8, | |
| 5662 | we use the least significant bit to record | |
| 5663 | whether we have initialized it already. | |
| 5664 | ||
| 5665 | When doing a dynamic link, we create a .rela.got | |
| 5666 | relocation entry to initialize the value. This | |
| 5667 | is done in the finish_dynamic_symbol routine. */ | |
| 5668 | if ((off & 1) != 0) | |
| 5669 | off &= ~1; | |
| 5670 | else | |
| 5671 | { | |
| 5672 | bfd_put_NN (output_bfd, value, | |
| 5673 | base_got->contents + off); | |
| 5674 | /* Note that this is harmless as -1 | 1 still is -1. */ | |
| 5675 | h->got.offset |= 1; | |
| 5676 | } | |
| 5677 | } | |
| 5678 | value = (base_got->output_section->vma | |
| 5679 | + base_got->output_offset + off); | |
| 5680 | } | |
| 5681 | else | |
| 5682 | value = aarch64_calculate_got_entry_vma (h, globals, info, | |
| 5683 | value, output_bfd, | |
| 5684 | unresolved_reloc_p); | |
| a0becb89 | 5685 | |
| 2aff25ba JW |
5686 | if (aarch64_relocation_aginst_gp_p (bfd_r_type)) |
| 5687 | addend = (globals->root.sgot->output_section->vma | |
| 5688 | + globals->root.sgot->output_offset); | |
| a0becb89 | 5689 | |
| 652afeef TC |
5690 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
| 5691 | place, value, | |
| 99ad26cb | 5692 | addend, weak_undef_p); |
| 1419bbe5 | 5693 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value); |
| 1419bbe5 | 5694 | case BFD_RELOC_AARCH64_ADD_LO12: |
| ce336788 | 5695 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: |
| 1419bbe5 WN |
5696 | break; |
| 5697 | } | |
| 5698 | } | |
| 5699 | ||
| f657f8c4 | 5700 | skip_ifunc: |
| ddb7fd0f L |
5701 | resolved_to_zero = (h != NULL |
| 5702 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
| 5703 | ||
| a6bb11b2 | 5704 | switch (bfd_r_type) |
| a06ea964 | 5705 | { |
| a6bb11b2 | 5706 | case BFD_RELOC_AARCH64_NONE: |
| 0484b454 | 5707 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
| a6bb11b2 | 5708 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
| 0484b454 | 5709 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
| 0a1b45a2 | 5710 | *unresolved_reloc_p = false; |
| a06ea964 NC |
5711 | return bfd_reloc_ok; |
| 5712 | ||
| a6bb11b2 | 5713 | case BFD_RELOC_AARCH64_NN: |
| a06ea964 NC |
5714 | |
| 5715 | /* When generating a shared object or relocatable executable, these | |
| 07d6d2b8 AM |
5716 | relocations are copied into the output file to be resolved at |
| 5717 | run time. */ | |
| 6353d82b JW |
5718 | if (((bfd_link_pic (info) |
| 5719 | || globals->root.is_relocatable_executable) | |
| 5720 | && (input_section->flags & SEC_ALLOC) | |
| 5721 | && (h == NULL | |
| ddb7fd0f L |
5722 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
| 5723 | && !resolved_to_zero) | |
| 6353d82b JW |
5724 | || h->root.type != bfd_link_hash_undefweak)) |
| 5725 | /* Or we are creating an executable, we may need to keep relocations | |
| 5726 | for symbols satisfied by a dynamic library if we manage to avoid | |
| 5727 | copy relocs for the symbol. */ | |
| 5728 | || (ELIMINATE_COPY_RELOCS | |
| 5729 | && !bfd_link_pic (info) | |
| 5730 | && h != NULL | |
| 5731 | && (input_section->flags & SEC_ALLOC) | |
| 5732 | && h->dynindx != -1 | |
| 5733 | && !h->non_got_ref | |
| 5734 | && ((h->def_dynamic | |
| 5735 | && !h->def_regular) | |
| 5736 | || h->root.type == bfd_link_hash_undefweak | |
| 5737 | || h->root.type == bfd_link_hash_undefined))) | |
| a06ea964 NC |
5738 | { |
| 5739 | Elf_Internal_Rela outrel; | |
| 5740 | bfd_byte *loc; | |
| 0a1b45a2 | 5741 | bool skip, relocate; |
| a06ea964 NC |
5742 | asection *sreloc; |
| 5743 | ||
| 0a1b45a2 | 5744 | *unresolved_reloc_p = false; |
| a06ea964 | 5745 | |
| 0a1b45a2 AM |
5746 | skip = false; |
| 5747 | relocate = false; | |
| a06ea964 NC |
5748 | |
| 5749 | outrel.r_addend = signed_addend; | |
| 5750 | outrel.r_offset = | |
| 5751 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
| 5752 | rel->r_offset); | |
| 5753 | if (outrel.r_offset == (bfd_vma) - 1) | |
| 0a1b45a2 | 5754 | skip = true; |
| a06ea964 NC |
5755 | else if (outrel.r_offset == (bfd_vma) - 2) |
| 5756 | { | |
| 0a1b45a2 AM |
5757 | skip = true; |
| 5758 | relocate = true; | |
| a06ea964 | 5759 | } |
| 0c1ded8d RL |
5760 | else if (abs_symbol_p) |
| 5761 | { | |
| 5762 | /* Local absolute symbol. */ | |
| 5763 | skip = (h->forced_local || (h->dynindx == -1)); | |
| 5764 | relocate = skip; | |
| 5765 | } | |
| a06ea964 NC |
5766 | |
| 5767 | outrel.r_offset += (input_section->output_section->vma | |
| 5768 | + input_section->output_offset); | |
| 5769 | ||
| 5770 | if (skip) | |
| 5771 | memset (&outrel, 0, sizeof outrel); | |
| 5772 | else if (h != NULL | |
| 5773 | && h->dynindx != -1 | |
| 0e1862bb | 5774 | && (!bfd_link_pic (info) |
| 0c1ded8d | 5775 | || !(bfd_link_pie (info) || SYMBOLIC_BIND (info, h)) |
| 0e1862bb | 5776 | || !h->def_regular)) |
| cec5225b | 5777 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); |
| a06ea964 NC |
5778 | else |
| 5779 | { | |
| 5780 | int symbol; | |
| 5781 | ||
| 5782 | /* On SVR4-ish systems, the dynamic loader cannot | |
| 5783 | relocate the text and data segments independently, | |
| 5784 | so the symbol does not matter. */ | |
| 5785 | symbol = 0; | |
| 63b4cc53 | 5786 | relocate = !globals->no_apply_dynamic_relocs; |
| a6bb11b2 | 5787 | outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE)); |
| a06ea964 NC |
5788 | outrel.r_addend += value; |
| 5789 | } | |
| 5790 | ||
| 1419bbe5 WN |
5791 | sreloc = elf_section_data (input_section)->sreloc; |
| 5792 | if (sreloc == NULL || sreloc->contents == NULL) | |
| 5793 | return bfd_reloc_notsupported; | |
| 5794 | ||
| 5795 | loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals); | |
| cec5225b | 5796 | bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc); |
| a06ea964 | 5797 | |
| 1419bbe5 | 5798 | if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size) |
| a06ea964 NC |
5799 | { |
| 5800 | /* Sanity to check that we have previously allocated | |
| 5801 | sufficient space in the relocation section for the | |
| 5802 | number of relocations we actually want to emit. */ | |
| 5803 | abort (); | |
| 5804 | } | |
| 5805 | ||
| 5806 | /* If this reloc is against an external symbol, we do not want to | |
| 5807 | fiddle with the addend. Otherwise, we need to include the symbol | |
| 5808 | value so that it becomes an addend for the dynamic reloc. */ | |
| 5809 | if (!relocate) | |
| 5810 | return bfd_reloc_ok; | |
| 5811 | ||
| 5812 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
| 5813 | contents, rel->r_offset, value, | |
| 5814 | signed_addend); | |
| 5815 | } | |
| 5816 | else | |
| 5817 | value += signed_addend; | |
| 5818 | break; | |
| 5819 | ||
| a6bb11b2 | 5820 | case BFD_RELOC_AARCH64_CALL26: |
| ce336788 | 5821 | case BFD_RELOC_AARCH64_JUMP26: |
| a06ea964 NC |
5822 | { |
| 5823 | asection *splt = globals->root.splt; | |
| 0a1b45a2 | 5824 | bool via_plt_p = |
| c7cd2917 | 5825 | splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1; |
| a06ea964 NC |
5826 | |
| 5827 | /* A call to an undefined weak symbol is converted to a jump to | |
| 5828 | the next instruction unless a PLT entry will be created. | |
| 5829 | The jump to the next instruction is optimized as a NOP. | |
| 5830 | Do the same for local undefined symbols. */ | |
| 5831 | if (weak_undef_p && ! via_plt_p) | |
| 5832 | { | |
| 5833 | bfd_putl32 (INSN_NOP, hit_data); | |
| 5834 | return bfd_reloc_ok; | |
| 5835 | } | |
| 5836 | ||
| 5837 | /* If the call goes through a PLT entry, make sure to | |
| 5838 | check distance to the right destination address. */ | |
| 5839 | if (via_plt_p) | |
| 07f9ddfe JW |
5840 | value = (splt->output_section->vma |
| 5841 | + splt->output_offset + h->plt.offset); | |
| 5842 | ||
| 5843 | /* Check if a stub has to be inserted because the destination | |
| 5844 | is too far away. */ | |
| 5845 | struct elf_aarch64_stub_hash_entry *stub_entry = NULL; | |
| 2f340668 JW |
5846 | |
| 5847 | /* If the branch destination is directed to plt stub, "value" will be | |
| 5848 | the final destination, otherwise we should plus signed_addend, it may | |
| 5849 | contain non-zero value, for example call to local function symbol | |
| 5850 | which are turned into "sec_sym + sec_off", and sec_off is kept in | |
| 5851 | signed_addend. */ | |
| 5852 | if (! aarch64_valid_branch_p (via_plt_p ? value : value + signed_addend, | |
| 5853 | place)) | |
| 07f9ddfe JW |
5854 | /* The target is out of reach, so redirect the branch to |
| 5855 | the local stub for this function. */ | |
| 5856 | stub_entry = elfNN_aarch64_get_stub_entry (input_section, sym_sec, h, | |
| 5857 | rel, globals); | |
| 5858 | if (stub_entry != NULL) | |
| 2f340668 JW |
5859 | { |
| 5860 | value = (stub_entry->stub_offset | |
| 5861 | + stub_entry->stub_sec->output_offset | |
| 5862 | + stub_entry->stub_sec->output_section->vma); | |
| 5863 | ||
| 5864 | /* We have redirected the destination to stub entry address, | |
| 5865 | so ignore any addend record in the original rela entry. */ | |
| 5866 | signed_addend = 0; | |
| 5867 | } | |
| a06ea964 | 5868 | } |
| 652afeef TC |
5869 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
| 5870 | place, value, | |
| caed7120 | 5871 | signed_addend, weak_undef_p); |
| 0a1b45a2 | 5872 | *unresolved_reloc_p = false; |
| a06ea964 NC |
5873 | break; |
| 5874 | ||
| dcbd20eb JW |
5875 | case BFD_RELOC_AARCH64_16_PCREL: |
| 5876 | case BFD_RELOC_AARCH64_32_PCREL: | |
| 5877 | case BFD_RELOC_AARCH64_64_PCREL: | |
| ce336788 JW |
5878 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
| 5879 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
| 5880 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
| 5881 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
| 1daf502a RL |
5882 | case BFD_RELOC_AARCH64_MOVW_PREL_G0: |
| 5883 | case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC: | |
| 5884 | case BFD_RELOC_AARCH64_MOVW_PREL_G1: | |
| 5885 | case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC: | |
| 5886 | case BFD_RELOC_AARCH64_MOVW_PREL_G2: | |
| 5887 | case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC: | |
| 5888 | case BFD_RELOC_AARCH64_MOVW_PREL_G3: | |
| 0e1862bb | 5889 | if (bfd_link_pic (info) |
| dcbd20eb JW |
5890 | && (input_section->flags & SEC_ALLOC) != 0 |
| 5891 | && (input_section->flags & SEC_READONLY) != 0 | |
| 83c32500 | 5892 | && !_bfd_elf_symbol_refs_local_p (h, info, 1)) |
| dcbd20eb JW |
5893 | { |
| 5894 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
| 5895 | ||
| 4eca0228 | 5896 | _bfd_error_handler |
| 695344c0 | 5897 | /* xgettext:c-format */ |
| 871b3ab2 | 5898 | (_("%pB: relocation %s against symbol `%s' which may bind " |
| d68f1976 JW |
5899 | "externally can not be used when making a shared object; " |
| 5900 | "recompile with -fPIC"), | |
| dcbd20eb JW |
5901 | input_bfd, elfNN_aarch64_howto_table[howto_index].name, |
| 5902 | h->root.root.string); | |
| 5903 | bfd_set_error (bfd_error_bad_value); | |
| 1d75a8e2 | 5904 | return bfd_reloc_notsupported; |
| dcbd20eb | 5905 | } |
| c7cd2917 SP |
5906 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
| 5907 | place, value, | |
| 5908 | signed_addend, | |
| 5909 | weak_undef_p); | |
| 5910 | break; | |
| 5911 | ||
| 5912 | case BFD_RELOC_AARCH64_BRANCH19: | |
| 5913 | case BFD_RELOC_AARCH64_TSTBR14: | |
| 5914 | if (h && h->root.type == bfd_link_hash_undefined) | |
| 5915 | { | |
| 5916 | _bfd_error_handler | |
| 5917 | /* xgettext:c-format */ | |
| 5918 | (_("%pB: conditional branch to undefined symbol `%s' " | |
| 5919 | "not allowed"), input_bfd, h->root.root.string); | |
| 5920 | bfd_set_error (bfd_error_bad_value); | |
| 5921 | return bfd_reloc_notsupported; | |
| 5922 | } | |
| 1a0670f3 | 5923 | /* Fall through. */ |
| dcbd20eb | 5924 | |
| a6bb11b2 | 5925 | case BFD_RELOC_AARCH64_16: |
| 92d77487 RL |
5926 | #if ARCH_SIZE == 64 |
| 5927 | case BFD_RELOC_AARCH64_32: | |
| 5928 | #endif | |
| a6bb11b2 | 5929 | case BFD_RELOC_AARCH64_ADD_LO12: |
| ce336788 | 5930 | case BFD_RELOC_AARCH64_LDST128_LO12: |
| a6bb11b2 YZ |
5931 | case BFD_RELOC_AARCH64_LDST16_LO12: |
| 5932 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
| 5933 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
| ce336788 | 5934 | case BFD_RELOC_AARCH64_LDST8_LO12: |
| a6bb11b2 YZ |
5935 | case BFD_RELOC_AARCH64_MOVW_G0: |
| 5936 | case BFD_RELOC_AARCH64_MOVW_G0_NC: | |
| ce336788 | 5937 | case BFD_RELOC_AARCH64_MOVW_G0_S: |
| a6bb11b2 YZ |
5938 | case BFD_RELOC_AARCH64_MOVW_G1: |
| 5939 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
| ce336788 | 5940 | case BFD_RELOC_AARCH64_MOVW_G1_S: |
| a6bb11b2 YZ |
5941 | case BFD_RELOC_AARCH64_MOVW_G2: |
| 5942 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
| ce336788 | 5943 | case BFD_RELOC_AARCH64_MOVW_G2_S: |
| a6bb11b2 | 5944 | case BFD_RELOC_AARCH64_MOVW_G3: |
| 652afeef TC |
5945 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
| 5946 | place, value, | |
| caed7120 | 5947 | signed_addend, weak_undef_p); |
| a06ea964 NC |
5948 | break; |
| 5949 | ||
| a6bb11b2 YZ |
5950 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
| 5951 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
| 7018c030 | 5952 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
| ce336788 | 5953 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
| 99ad26cb | 5954 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
| ce336788 | 5955 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
| 2aff25ba JW |
5956 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
| 5957 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: | |
| 5958 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: | |
| a06ea964 NC |
5959 | if (globals->root.sgot == NULL) |
| 5960 | BFD_ASSERT (h != NULL); | |
| 5961 | ||
| 0a1b45a2 | 5962 | relative_reloc = false; |
| a06ea964 NC |
5963 | if (h != NULL) |
| 5964 | { | |
| 99ad26cb | 5965 | bfd_vma addend = 0; |
| ff07562f JW |
5966 | |
| 5967 | /* If a symbol is not dynamic and is not undefined weak, bind it | |
| 5968 | locally and generate a RELATIVE relocation under PIC mode. | |
| 5969 | ||
| 5970 | NOTE: one symbol may be referenced by several relocations, we | |
| 5971 | should only generate one RELATIVE relocation for that symbol. | |
| 5972 | Therefore, check GOT offset mark first. */ | |
| 5973 | if (h->dynindx == -1 | |
| 5974 | && !h->forced_local | |
| 5975 | && h->root.type != bfd_link_hash_undefweak | |
| 5976 | && bfd_link_pic (info) | |
| 5977 | && !symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
| 0a1b45a2 | 5978 | relative_reloc = true; |
| ff07562f | 5979 | |
| a06ea964 NC |
5980 | value = aarch64_calculate_got_entry_vma (h, globals, info, value, |
| 5981 | output_bfd, | |
| 5982 | unresolved_reloc_p); | |
| ff07562f JW |
5983 | /* Record the GOT entry address which will be used when generating |
| 5984 | RELATIVE relocation. */ | |
| 5985 | if (relative_reloc) | |
| 5986 | got_entry_addr = value; | |
| 5987 | ||
| 2aff25ba | 5988 | if (aarch64_relocation_aginst_gp_p (bfd_r_type)) |
| 99ad26cb JW |
5989 | addend = (globals->root.sgot->output_section->vma |
| 5990 | + globals->root.sgot->output_offset); | |
| 652afeef TC |
5991 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
| 5992 | place, value, | |
| 99ad26cb | 5993 | addend, weak_undef_p); |
| a06ea964 | 5994 | } |
| b53b1bed JW |
5995 | else |
| 5996 | { | |
| 99ad26cb | 5997 | bfd_vma addend = 0; |
| b53b1bed JW |
5998 | struct elf_aarch64_local_symbol *locals |
| 5999 | = elf_aarch64_locals (input_bfd); | |
| 6000 | ||
| 6001 | if (locals == NULL) | |
| 6002 | { | |
| 6003 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
| 4eca0228 | 6004 | _bfd_error_handler |
| 695344c0 | 6005 | /* xgettext:c-format */ |
| 90b6238f | 6006 | (_("%pB: local symbol descriptor table be NULL when applying " |
| b53b1bed JW |
6007 | "relocation %s against local symbol"), |
| 6008 | input_bfd, elfNN_aarch64_howto_table[howto_index].name); | |
| 6009 | abort (); | |
| 6010 | } | |
| 6011 | ||
| 6012 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
| 6013 | base_got = globals->root.sgot; | |
| ff07562f JW |
6014 | got_entry_addr = (base_got->output_section->vma |
| 6015 | + base_got->output_offset + off); | |
| b53b1bed JW |
6016 | |
| 6017 | if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
| 6018 | { | |
| 6019 | bfd_put_64 (output_bfd, value, base_got->contents + off); | |
| 6020 | ||
| ff07562f JW |
6021 | /* For local symbol, we have done absolute relocation in static |
| 6022 | linking stage. While for shared library, we need to update the | |
| 6023 | content of GOT entry according to the shared object's runtime | |
| 6024 | base address. So, we need to generate a R_AARCH64_RELATIVE reloc | |
| 6025 | for dynamic linker. */ | |
| 0e1862bb | 6026 | if (bfd_link_pic (info)) |
| 0a1b45a2 | 6027 | relative_reloc = true; |
| b53b1bed JW |
6028 | |
| 6029 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
| 6030 | } | |
| 6031 | ||
| 6032 | /* Update the relocation value to GOT entry addr as we have transformed | |
| 6033 | the direct data access into indirect data access through GOT. */ | |
| 6034 | value = got_entry_addr; | |
| 99ad26cb | 6035 | |
| 2aff25ba | 6036 | if (aarch64_relocation_aginst_gp_p (bfd_r_type)) |
| 99ad26cb JW |
6037 | addend = base_got->output_section->vma + base_got->output_offset; |
| 6038 | ||
| 652afeef TC |
6039 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
| 6040 | place, value, | |
| 99ad26cb | 6041 | addend, weak_undef_p); |
| b53b1bed | 6042 | } |
| ff07562f JW |
6043 | |
| 6044 | if (relative_reloc) | |
| 6045 | { | |
| 6046 | asection *s; | |
| 6047 | Elf_Internal_Rela outrel; | |
| 6048 | ||
| 6049 | s = globals->root.srelgot; | |
| 6050 | if (s == NULL) | |
| 6051 | abort (); | |
| 6052 | ||
| 6053 | outrel.r_offset = got_entry_addr; | |
| 6054 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); | |
| 6055 | outrel.r_addend = orig_value; | |
| 6056 | elf_append_rela (output_bfd, s, &outrel); | |
| 6057 | } | |
| a2e1db00 RL |
6058 | break; |
| 6059 | ||
| ce336788 | 6060 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
| a6bb11b2 | 6061 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
| 3c12b054 | 6062 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
| a6bb11b2 | 6063 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
| a6bb11b2 | 6064 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
| ce336788 | 6065 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
| 043bf05a | 6066 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
| 73f925cc | 6067 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
| f69e4920 | 6068 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
| 77a69ff8 | 6069 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
| a06ea964 NC |
6070 | if (globals->root.sgot == NULL) |
| 6071 | return bfd_reloc_notsupported; | |
| 6072 | ||
| 6073 | value = (symbol_got_offset (input_bfd, h, r_symndx) | |
| 6074 | + globals->root.sgot->output_section->vma | |
| f44a1f8e | 6075 | + globals->root.sgot->output_offset); |
| a06ea964 | 6076 | |
| 652afeef TC |
6077 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
| 6078 | place, value, | |
| caed7120 | 6079 | 0, weak_undef_p); |
| 0a1b45a2 | 6080 | *unresolved_reloc_p = false; |
| a06ea964 NC |
6081 | break; |
| 6082 | ||
| 7ba7cfe4 | 6083 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
| 94facae3 | 6084 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
| 3b957e5b RL |
6085 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
| 6086 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
| 94facae3 RL |
6087 | if (globals->root.sgot == NULL) |
| 6088 | return bfd_reloc_notsupported; | |
| 6089 | ||
| 6090 | value = symbol_got_offset (input_bfd, h, r_symndx); | |
| 652afeef TC |
6091 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
| 6092 | place, value, | |
| 94facae3 | 6093 | 0, weak_undef_p); |
| 0a1b45a2 | 6094 | *unresolved_reloc_p = false; |
| 94facae3 RL |
6095 | break; |
| 6096 | ||
| 6ffe9a1b | 6097 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12: |
| 40fbed84 | 6098 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12: |
| 753999c1 | 6099 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC: |
| 07c9aa07 JW |
6100 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12: |
| 6101 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC: | |
| 6102 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12: | |
| 6103 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC: | |
| 6104 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12: | |
| 6105 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC: | |
| 6106 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12: | |
| 6107 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC: | |
| 6ffe9a1b JW |
6108 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0: |
| 6109 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC: | |
| 6110 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1: | |
| 6111 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC: | |
| 6112 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2: | |
| 652afeef TC |
6113 | { |
| 6114 | if (!(weak_undef_p || elf_hash_table (info)->tls_sec)) | |
| 6115 | { | |
| 6116 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
| 6117 | _bfd_error_handler | |
| 6118 | /* xgettext:c-format */ | |
| 6119 | (_("%pB: TLS relocation %s against undefined symbol `%s'"), | |
| 6120 | input_bfd, elfNN_aarch64_howto_table[howto_index].name, | |
| 6121 | h->root.root.string); | |
| 6122 | bfd_set_error (bfd_error_bad_value); | |
| 6123 | return bfd_reloc_notsupported; | |
| 6124 | } | |
| 6125 | ||
| 6126 | bfd_vma def_value | |
| 6127 | = weak_undef_p ? 0 : signed_addend - dtpoff_base (info); | |
| 6128 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, | |
| 6129 | place, value, | |
| 6130 | def_value, weak_undef_p); | |
| 6131 | break; | |
| 6132 | } | |
| 40fbed84 | 6133 | |
| a6bb11b2 YZ |
6134 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
| 6135 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: | |
| 6136 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: | |
| e04ef022 RL |
6137 | case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12: |
| 6138 | case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC: | |
| 6139 | case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12: | |
| 6140 | case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC: | |
| 6141 | case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12: | |
| 6142 | case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC: | |
| 6143 | case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12: | |
| 6144 | case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC: | |
| a6bb11b2 YZ |
6145 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: |
| 6146 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
| 6147 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: | |
| 6148 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
| 6149 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
| 652afeef TC |
6150 | { |
| 6151 | if (!(weak_undef_p || elf_hash_table (info)->tls_sec)) | |
| 6152 | { | |
| 6153 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
| 6154 | _bfd_error_handler | |
| 6155 | /* xgettext:c-format */ | |
| 6156 | (_("%pB: TLS relocation %s against undefined symbol `%s'"), | |
| 6157 | input_bfd, elfNN_aarch64_howto_table[howto_index].name, | |
| 6158 | h->root.root.string); | |
| 6159 | bfd_set_error (bfd_error_bad_value); | |
| 6160 | return bfd_reloc_notsupported; | |
| 6161 | } | |
| 6162 | ||
| 6163 | bfd_vma def_value | |
| 6164 | = weak_undef_p ? 0 : signed_addend - tpoff_base (info); | |
| 6165 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, | |
| 6166 | place, value, | |
| 6167 | def_value, weak_undef_p); | |
| 0a1b45a2 | 6168 | *unresolved_reloc_p = false; |
| 652afeef TC |
6169 | break; |
| 6170 | } | |
| a06ea964 | 6171 | |
| f955cccf | 6172 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
| a6bb11b2 | 6173 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
| 389b8029 | 6174 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
| a6bb11b2 | 6175 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
| f955cccf | 6176 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
| 1ada945d | 6177 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
| a06ea964 NC |
6178 | if (globals->root.sgot == NULL) |
| 6179 | return bfd_reloc_notsupported; | |
| a06ea964 NC |
6180 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) |
| 6181 | + globals->root.sgotplt->output_section->vma | |
| f44a1f8e | 6182 | + globals->root.sgotplt->output_offset |
| a06ea964 NC |
6183 | + globals->sgotplt_jump_table_size); |
| 6184 | ||
| 652afeef TC |
6185 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
| 6186 | place, value, | |
| caed7120 | 6187 | 0, weak_undef_p); |
| 0a1b45a2 | 6188 | *unresolved_reloc_p = false; |
| a06ea964 NC |
6189 | break; |
| 6190 | ||
| 0484b454 RL |
6191 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
| 6192 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
| 6193 | if (globals->root.sgot == NULL) | |
| 6194 | return bfd_reloc_notsupported; | |
| 6195 | ||
| 6196 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) | |
| 6197 | + globals->root.sgotplt->output_section->vma | |
| 6198 | + globals->root.sgotplt->output_offset | |
| 6199 | + globals->sgotplt_jump_table_size); | |
| 6200 | ||
| 6201 | value -= (globals->root.sgot->output_section->vma | |
| 6202 | + globals->root.sgot->output_offset); | |
| 6203 | ||
| 652afeef TC |
6204 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
| 6205 | place, value, | |
| 0484b454 | 6206 | 0, weak_undef_p); |
| 0a1b45a2 | 6207 | *unresolved_reloc_p = false; |
| 0484b454 RL |
6208 | break; |
| 6209 | ||
| a06ea964 NC |
6210 | default: |
| 6211 | return bfd_reloc_notsupported; | |
| 6212 | } | |
| 6213 | ||
| 6214 | if (saved_addend) | |
| 6215 | *saved_addend = value; | |
| 6216 | ||
| 6217 | /* Only apply the final relocation in a sequence. */ | |
| 6218 | if (save_addend) | |
| 6219 | return bfd_reloc_continue; | |
| 6220 | ||
| caed7120 YZ |
6221 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, |
| 6222 | howto, value); | |
| a06ea964 NC |
6223 | } |
| 6224 | ||
| 2d0ca824 YN |
6225 | /* LP64 and ILP32 operates on x- and w-registers respectively. |
| 6226 | Next definitions take into account the difference between | |
| 6227 | corresponding machine codes. R means x-register if the target | |
| 6228 | arch is LP64, and w-register if the target is ILP32. */ | |
| 6229 | ||
| 6230 | #if ARCH_SIZE == 64 | |
| 6231 | # define add_R0_R0 (0x91000000) | |
| 6232 | # define add_R0_R0_R1 (0x8b000020) | |
| 6233 | # define add_R0_R1 (0x91400020) | |
| 6234 | # define ldr_R0 (0x58000000) | |
| 6235 | # define ldr_R0_mask(i) (i & 0xffffffe0) | |
| 6236 | # define ldr_R0_x0 (0xf9400000) | |
| 6237 | # define ldr_hw_R0 (0xf2a00000) | |
| 6238 | # define movk_R0 (0xf2800000) | |
| 6239 | # define movz_R0 (0xd2a00000) | |
| 6240 | # define movz_hw_R0 (0xd2c00000) | |
| 6241 | #else /*ARCH_SIZE == 32 */ | |
| 6242 | # define add_R0_R0 (0x11000000) | |
| 6243 | # define add_R0_R0_R1 (0x0b000020) | |
| 6244 | # define add_R0_R1 (0x11400020) | |
| 6245 | # define ldr_R0 (0x18000000) | |
| 6246 | # define ldr_R0_mask(i) (i & 0xbfffffe0) | |
| 6247 | # define ldr_R0_x0 (0xb9400000) | |
| 6248 | # define ldr_hw_R0 (0x72a00000) | |
| 6249 | # define movk_R0 (0x72800000) | |
| 6250 | # define movz_R0 (0x52a00000) | |
| 6251 | # define movz_hw_R0 (0x52c00000) | |
| 6252 | #endif | |
| 6253 | ||
| 9fca35fc TC |
6254 | /* Structure to hold payload for _bfd_aarch64_erratum_843419_clear_stub, |
| 6255 | it is used to identify the stub information to reset. */ | |
| 6256 | ||
| 6257 | struct erratum_843419_branch_to_stub_clear_data | |
| 6258 | { | |
| 6259 | bfd_vma adrp_offset; | |
| 6260 | asection *output_section; | |
| 6261 | }; | |
| 6262 | ||
| 6263 | /* Clear the erratum information for GEN_ENTRY if the ADRP_OFFSET and | |
| 6264 | section inside IN_ARG matches. The clearing is done by setting the | |
| 6265 | stub_type to none. */ | |
| 6266 | ||
| 0a1b45a2 | 6267 | static bool |
| 9fca35fc TC |
6268 | _bfd_aarch64_erratum_843419_clear_stub (struct bfd_hash_entry *gen_entry, |
| 6269 | void *in_arg) | |
| 6270 | { | |
| 6271 | struct elf_aarch64_stub_hash_entry *stub_entry | |
| 6272 | = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
| 6273 | struct erratum_843419_branch_to_stub_clear_data *data | |
| 6274 | = (struct erratum_843419_branch_to_stub_clear_data *) in_arg; | |
| 6275 | ||
| 6276 | if (stub_entry->target_section != data->output_section | |
| 6277 | || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer | |
| 6278 | || stub_entry->adrp_offset != data->adrp_offset) | |
| 0a1b45a2 | 6279 | return true; |
| 9fca35fc TC |
6280 | |
| 6281 | /* Change the stub type instead of removing the entry, removing from the hash | |
| 6282 | table would be slower and we have already reserved the memory for the entry | |
| 6283 | so there wouldn't be much gain. Changing the stub also keeps around a | |
| 6284 | record of what was there before. */ | |
| 6285 | stub_entry->stub_type = aarch64_stub_none; | |
| 6286 | ||
| 6287 | /* We're done and there could have been only one matching stub at that | |
| 6288 | particular offset, so abort further traversal. */ | |
| 0a1b45a2 | 6289 | return false; |
| 9fca35fc TC |
6290 | } |
| 6291 | ||
| 6292 | /* TLS Relaxations may relax an adrp sequence that matches the erratum 843419 | |
| 6293 | sequence. In this case the erratum no longer applies and we need to remove | |
| 6294 | the entry from the pending stub generation. This clears matching adrp insn | |
| 6295 | at ADRP_OFFSET in INPUT_SECTION in the stub table defined in GLOBALS. */ | |
| 6296 | ||
| 6297 | static void | |
| 6298 | clear_erratum_843419_entry (struct elf_aarch64_link_hash_table *globals, | |
| 6299 | bfd_vma adrp_offset, asection *input_section) | |
| 6300 | { | |
| 739b5c9c | 6301 | if (globals->fix_erratum_843419 & ERRAT_ADRP) |
| 9fca35fc TC |
6302 | { |
| 6303 | struct erratum_843419_branch_to_stub_clear_data data; | |
| 6304 | data.adrp_offset = adrp_offset; | |
| 6305 | data.output_section = input_section; | |
| 6306 | ||
| 6307 | bfd_hash_traverse (&globals->stub_hash_table, | |
| 6308 | _bfd_aarch64_erratum_843419_clear_stub, &data); | |
| 6309 | } | |
| 6310 | } | |
| 6311 | ||
| a06ea964 NC |
6312 | /* Handle TLS relaxations. Relaxing is possible for symbols that use |
| 6313 | R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static | |
| 6314 | link. | |
| 6315 | ||
| 6316 | Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller | |
| 6317 | is to then call final_link_relocate. Return other values in the | |
| 6318 | case of error. */ | |
| 6319 | ||
| 6320 | static bfd_reloc_status_type | |
| cec5225b | 6321 | elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals, |
| 9fca35fc TC |
6322 | bfd *input_bfd, asection *input_section, |
| 6323 | bfd_byte *contents, Elf_Internal_Rela *rel, | |
| 976f1663 MM |
6324 | struct elf_link_hash_entry *h, |
| 6325 | struct bfd_link_info *info) | |
| a06ea964 | 6326 | { |
| 976f1663 MM |
6327 | bool local_exec = bfd_link_executable (info) |
| 6328 | && SYMBOL_REFERENCES_LOCAL (info, h); | |
| cec5225b | 6329 | unsigned int r_type = ELFNN_R_TYPE (rel->r_info); |
| a06ea964 NC |
6330 | unsigned long insn; |
| 6331 | ||
| 6332 | BFD_ASSERT (globals && input_bfd && contents && rel); | |
| 6333 | ||
| 0aa13fee | 6334 | switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type)) |
| a06ea964 | 6335 | { |
| a6bb11b2 | 6336 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
| ce336788 | 6337 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
| 976f1663 | 6338 | if (local_exec) |
| a06ea964 NC |
6339 | { |
| 6340 | /* GD->LE relaxation: | |
| 2d0ca824 | 6341 | adrp x0, :tlsgd:var => movz R0, :tprel_g1:var |
| a06ea964 | 6342 | or |
| 2d0ca824 YN |
6343 | adrp x0, :tlsdesc:var => movz R0, :tprel_g1:var |
| 6344 | ||
| 6345 | Where R is x for LP64, and w for ILP32. */ | |
| 6346 | bfd_putl32 (movz_R0, contents + rel->r_offset); | |
| 9fca35fc TC |
6347 | /* We have relaxed the adrp into a mov, we may have to clear any |
| 6348 | pending erratum fixes. */ | |
| 6349 | clear_erratum_843419_entry (globals, rel->r_offset, input_section); | |
| a06ea964 NC |
6350 | return bfd_reloc_continue; |
| 6351 | } | |
| 6352 | else | |
| 6353 | { | |
| 6354 | /* GD->IE relaxation: | |
| 6355 | adrp x0, :tlsgd:var => adrp x0, :gottprel:var | |
| 6356 | or | |
| 6357 | adrp x0, :tlsdesc:var => adrp x0, :gottprel:var | |
| 6358 | */ | |
| a06ea964 NC |
6359 | return bfd_reloc_continue; |
| 6360 | } | |
| 6361 | ||
| 389b8029 MS |
6362 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
| 6363 | BFD_ASSERT (0); | |
| 6364 | break; | |
| 6365 | ||
| 1ada945d | 6366 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
| 976f1663 | 6367 | if (local_exec) |
| 1ada945d MS |
6368 | { |
| 6369 | /* Tiny TLSDESC->LE relaxation: | |
| 07d6d2b8 AM |
6370 | ldr x1, :tlsdesc:var => movz R0, #:tprel_g1:var |
| 6371 | adr x0, :tlsdesc:var => movk R0, #:tprel_g0_nc:var | |
| 1ada945d | 6372 | .tlsdesccall var |
| 07d6d2b8 | 6373 | blr x1 => nop |
| 2d0ca824 YN |
6374 | |
| 6375 | Where R is x for LP64, and w for ILP32. */ | |
| 1ada945d MS |
6376 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); |
| 6377 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
| 6378 | ||
| 6379 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
| 6380 | AARCH64_R (TLSLE_MOVW_TPREL_G0_NC)); | |
| 6381 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
| 6382 | ||
| 2d0ca824 YN |
6383 | bfd_putl32 (movz_R0, contents + rel->r_offset); |
| 6384 | bfd_putl32 (movk_R0, contents + rel->r_offset + 4); | |
| 1ada945d MS |
6385 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); |
| 6386 | return bfd_reloc_continue; | |
| 6387 | } | |
| 6388 | else | |
| 6389 | { | |
| 6390 | /* Tiny TLSDESC->IE relaxation: | |
| 07d6d2b8 AM |
6391 | ldr x1, :tlsdesc:var => ldr x0, :gottprel:var |
| 6392 | adr x0, :tlsdesc:var => nop | |
| 1ada945d | 6393 | .tlsdesccall var |
| 07d6d2b8 | 6394 | blr x1 => nop |
| 1ada945d MS |
6395 | */ |
| 6396 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); | |
| 6397 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
| 6398 | ||
| 6399 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
| 6400 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
| 6401 | ||
| 2d0ca824 | 6402 | bfd_putl32 (ldr_R0, contents + rel->r_offset); |
| 1ada945d MS |
6403 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4); |
| 6404 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); | |
| 6405 | return bfd_reloc_continue; | |
| 6406 | } | |
| 6407 | ||
| 3c12b054 | 6408 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
| 976f1663 | 6409 | if (local_exec) |
| 3c12b054 MS |
6410 | { |
| 6411 | /* Tiny GD->LE relaxation: | |
| 07d6d2b8 AM |
6412 | adr x0, :tlsgd:var => mrs x1, tpidr_el0 |
| 6413 | bl __tls_get_addr => add R0, R1, #:tprel_hi12:x, lsl #12 | |
| 6414 | nop => add R0, R0, #:tprel_lo12_nc:x | |
| 2d0ca824 YN |
6415 | |
| 6416 | Where R is x for LP64, and x for Ilp32. */ | |
| 3c12b054 MS |
6417 | |
| 6418 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
| 6419 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
| 6420 | ||
| 6421 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0); | |
| 2d0ca824 YN |
6422 | bfd_putl32 (add_R0_R1, contents + rel->r_offset + 4); |
| 6423 | bfd_putl32 (add_R0_R0, contents + rel->r_offset + 8); | |
| 3c12b054 MS |
6424 | |
| 6425 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
| 6426 | AARCH64_R (TLSLE_ADD_TPREL_LO12_NC)); | |
| 6427 | rel[1].r_offset = rel->r_offset + 8; | |
| 6428 | ||
| 6429 | /* Move the current relocation to the second instruction in | |
| 6430 | the sequence. */ | |
| 6431 | rel->r_offset += 4; | |
| 6432 | rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
| 6433 | AARCH64_R (TLSLE_ADD_TPREL_HI12)); | |
| 6434 | return bfd_reloc_continue; | |
| 6435 | } | |
| 6436 | else | |
| 6437 | { | |
| 6438 | /* Tiny GD->IE relaxation: | |
| 07d6d2b8 AM |
6439 | adr x0, :tlsgd:var => ldr R0, :gottprel:var |
| 6440 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
| 6441 | nop => add R0, R0, R1 | |
| 2d0ca824 YN |
6442 | |
| 6443 | Where R is x for LP64, and w for Ilp32. */ | |
| 3c12b054 MS |
6444 | |
| 6445 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
| 6446 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
| 6447 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
| 6448 | ||
| 2d0ca824 | 6449 | bfd_putl32 (ldr_R0, contents + rel->r_offset); |
| 3c12b054 | 6450 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); |
| 2d0ca824 | 6451 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8); |
| 3c12b054 MS |
6452 | return bfd_reloc_continue; |
| 6453 | } | |
| 6454 | ||
| ac734732 RL |
6455 | #if ARCH_SIZE == 64 |
| 6456 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: | |
| 6457 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSGD_MOVW_G0_NC)); | |
| 6458 | BFD_ASSERT (rel->r_offset + 12 == rel[2].r_offset); | |
| 6459 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (CALL26)); | |
| 6460 | ||
| 976f1663 | 6461 | if (local_exec) |
| ac734732 RL |
6462 | { |
| 6463 | /* Large GD->LE relaxation: | |
| 07d6d2b8 | 6464 | movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32 |
| ac734732 | 6465 | movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16 |
| 07d6d2b8 AM |
6466 | add x0, gp, x0 => movk x0, #:tprel_g0_nc:var |
| 6467 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
| 6468 | nop => add x0, x0, x1 | |
| ac734732 RL |
6469 | */ |
| 6470 | rel[2].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
| 6471 | AARCH64_R (TLSLE_MOVW_TPREL_G0_NC)); | |
| 6472 | rel[2].r_offset = rel->r_offset + 8; | |
| 6473 | ||
| 2d0ca824 YN |
6474 | bfd_putl32 (movz_hw_R0, contents + rel->r_offset + 0); |
| 6475 | bfd_putl32 (ldr_hw_R0, contents + rel->r_offset + 4); | |
| 6476 | bfd_putl32 (movk_R0, contents + rel->r_offset + 8); | |
| ac734732 | 6477 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12); |
| 2d0ca824 | 6478 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16); |
| ac734732 RL |
6479 | } |
| 6480 | else | |
| 6481 | { | |
| 6482 | /* Large GD->IE relaxation: | |
| 07d6d2b8 | 6483 | movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16 |
| ac734732 | 6484 | movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var |
| 07d6d2b8 AM |
6485 | add x0, gp, x0 => ldr x0, [gp, x0] |
| 6486 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
| 6487 | nop => add x0, x0, x1 | |
| ac734732 RL |
6488 | */ |
| 6489 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
| 6490 | bfd_putl32 (0xd2a80000, contents + rel->r_offset + 0); | |
| 2d0ca824 | 6491 | bfd_putl32 (ldr_R0, contents + rel->r_offset + 8); |
| ac734732 | 6492 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12); |
| 2d0ca824 | 6493 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16); |
| ac734732 RL |
6494 | } |
| 6495 | return bfd_reloc_continue; | |
| 6496 | ||
| 6497 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: | |
| 6498 | return bfd_reloc_continue; | |
| 6499 | #endif | |
| 6500 | ||
| 043bf05a MS |
6501 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
| 6502 | return bfd_reloc_continue; | |
| 6503 | ||
| a6bb11b2 | 6504 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
| 976f1663 | 6505 | if (local_exec) |
| a06ea964 NC |
6506 | { |
| 6507 | /* GD->LE relaxation: | |
| 6508 | ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var | |
| 2d0ca824 YN |
6509 | |
| 6510 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
| 6511 | bfd_putl32 (movk_R0, contents + rel->r_offset); | |
| a06ea964 NC |
6512 | return bfd_reloc_continue; |
| 6513 | } | |
| 6514 | else | |
| 6515 | { | |
| 6516 | /* GD->IE relaxation: | |
| 2d0ca824 YN |
6517 | ldr xd, [x0, #:tlsdesc_lo12:var] => ldr R0, [x0, #:gottprel_lo12:var] |
| 6518 | ||
| 6519 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
| a06ea964 | 6520 | insn = bfd_getl32 (contents + rel->r_offset); |
| 2d0ca824 | 6521 | bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset); |
| a06ea964 NC |
6522 | return bfd_reloc_continue; |
| 6523 | } | |
| 6524 | ||
| a6bb11b2 | 6525 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
| 976f1663 | 6526 | if (local_exec) |
| a06ea964 NC |
6527 | { |
| 6528 | /* GD->LE relaxation | |
| 07d6d2b8 AM |
6529 | add x0, #:tlsgd_lo12:var => movk R0, :tprel_g0_nc:var |
| 6530 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
| 6531 | nop => add R0, R1, R0 | |
| 2d0ca824 YN |
6532 | |
| 6533 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
| a06ea964 NC |
6534 | |
| 6535 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
| 6536 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
| cec5225b | 6537 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
| a06ea964 | 6538 | |
| 2d0ca824 | 6539 | bfd_putl32 (movk_R0, contents + rel->r_offset); |
| a06ea964 | 6540 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); |
| 2d0ca824 | 6541 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8); |
| a06ea964 NC |
6542 | return bfd_reloc_continue; |
| 6543 | } | |
| 6544 | else | |
| 6545 | { | |
| 6546 | /* GD->IE relaxation | |
| 07d6d2b8 AM |
6547 | ADD x0, #:tlsgd_lo12:var => ldr R0, [x0, #:gottprel_lo12:var] |
| 6548 | BL __tls_get_addr => mrs x1, tpidr_el0 | |
| a06ea964 | 6549 | R_AARCH64_CALL26 |
| 07d6d2b8 | 6550 | NOP => add R0, R1, R0 |
| 5cd1d8bc YN |
6551 | |
| 6552 | Where R is x for lp64 mode, and w for ilp32 mode. */ | |
| a06ea964 | 6553 | |
| a6bb11b2 | 6554 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); |
| a06ea964 NC |
6555 | |
| 6556 | /* Remove the relocation on the BL instruction. */ | |
| cec5225b | 6557 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
| a06ea964 | 6558 | |
| a06ea964 NC |
6559 | /* We choose to fixup the BL and NOP instructions using the |
| 6560 | offset from the second relocation to allow flexibility in | |
| 6561 | scheduling instructions between the ADD and BL. */ | |
| 2d0ca824 | 6562 | bfd_putl32 (ldr_R0_x0, contents + rel->r_offset); |
| 5cd1d8bc | 6563 | bfd_putl32 (0xd53bd041, contents + rel[1].r_offset); |
| 2d0ca824 | 6564 | bfd_putl32 (add_R0_R0_R1, contents + rel[1].r_offset + 4); |
| a06ea964 NC |
6565 | return bfd_reloc_continue; |
| 6566 | } | |
| 6567 | ||
| 0484b454 | 6568 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
| f955cccf | 6569 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
| a6bb11b2 | 6570 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
| a06ea964 | 6571 | /* GD->IE/LE relaxation: |
| 07d6d2b8 AM |
6572 | add x0, x0, #:tlsdesc_lo12:var => nop |
| 6573 | blr xd => nop | |
| a06ea964 NC |
6574 | */ |
| 6575 | bfd_putl32 (INSN_NOP, contents + rel->r_offset); | |
| 6576 | return bfd_reloc_ok; | |
| 6577 | ||
| 0484b454 | 6578 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
| 976f1663 | 6579 | if (local_exec) |
| 0484b454 RL |
6580 | { |
| 6581 | /* GD->LE relaxation: | |
| 2d0ca824 YN |
6582 | ldr xd, [gp, xn] => movk R0, #:tprel_g0_nc:var |
| 6583 | ||
| 6584 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
| 6585 | bfd_putl32 (movk_R0, contents + rel->r_offset); | |
| 0484b454 RL |
6586 | return bfd_reloc_continue; |
| 6587 | } | |
| 6588 | else | |
| 6589 | { | |
| 6590 | /* GD->IE relaxation: | |
| 2d0ca824 YN |
6591 | ldr xd, [gp, xn] => ldr R0, [gp, xn] |
| 6592 | ||
| 6593 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
| 0484b454 | 6594 | insn = bfd_getl32 (contents + rel->r_offset); |
| 2d0ca824 | 6595 | bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset); |
| 0484b454 RL |
6596 | return bfd_reloc_ok; |
| 6597 | } | |
| 6598 | ||
| 6599 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
| 6600 | /* GD->LE relaxation: | |
| 2d0ca824 | 6601 | movk xd, #:tlsdesc_off_g0_nc:var => movk R0, #:tprel_g1_nc:var, lsl #16 |
| 0484b454 | 6602 | GD->IE relaxation: |
| 2d0ca824 YN |
6603 | movk xd, #:tlsdesc_off_g0_nc:var => movk Rd, #:gottprel_g0_nc:var |
| 6604 | ||
| 6605 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
| 976f1663 | 6606 | if (local_exec) |
| 2d0ca824 | 6607 | bfd_putl32 (ldr_hw_R0, contents + rel->r_offset); |
| 0484b454 RL |
6608 | return bfd_reloc_continue; |
| 6609 | ||
| 6610 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
| 976f1663 | 6611 | if (local_exec) |
| 0484b454 RL |
6612 | { |
| 6613 | /* GD->LE relaxation: | |
| 2d0ca824 YN |
6614 | movz xd, #:tlsdesc_off_g1:var => movz R0, #:tprel_g2:var, lsl #32 |
| 6615 | ||
| 6616 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
| 6617 | bfd_putl32 (movz_hw_R0, contents + rel->r_offset); | |
| 0484b454 RL |
6618 | return bfd_reloc_continue; |
| 6619 | } | |
| 6620 | else | |
| 6621 | { | |
| 6622 | /* GD->IE relaxation: | |
| 2d0ca824 YN |
6623 | movz xd, #:tlsdesc_off_g1:var => movz Rd, #:gottprel_g1:var, lsl #16 |
| 6624 | ||
| 6625 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
| 0484b454 | 6626 | insn = bfd_getl32 (contents + rel->r_offset); |
| 2d0ca824 | 6627 | bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset); |
| 0484b454 RL |
6628 | return bfd_reloc_continue; |
| 6629 | } | |
| 6630 | ||
| a6bb11b2 | 6631 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
| a06ea964 | 6632 | /* IE->LE relaxation: |
| 07d6d2b8 | 6633 | adrp xd, :gottprel:var => movz Rd, :tprel_g1:var |
| 2d0ca824 YN |
6634 | |
| 6635 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
| 976f1663 | 6636 | if (local_exec) |
| a06ea964 NC |
6637 | { |
| 6638 | insn = bfd_getl32 (contents + rel->r_offset); | |
| 2d0ca824 | 6639 | bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset); |
| 9fca35fc TC |
6640 | /* We have relaxed the adrp into a mov, we may have to clear any |
| 6641 | pending erratum fixes. */ | |
| 6642 | clear_erratum_843419_entry (globals, rel->r_offset, input_section); | |
| a06ea964 NC |
6643 | } |
| 6644 | return bfd_reloc_continue; | |
| 6645 | ||
| a6bb11b2 | 6646 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: |
| a06ea964 | 6647 | /* IE->LE relaxation: |
| 07d6d2b8 | 6648 | ldr xd, [xm, #:gottprel_lo12:var] => movk Rd, :tprel_g0_nc:var |
| 2d0ca824 YN |
6649 | |
| 6650 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
| 976f1663 | 6651 | if (local_exec) |
| a06ea964 NC |
6652 | { |
| 6653 | insn = bfd_getl32 (contents + rel->r_offset); | |
| 2d0ca824 | 6654 | bfd_putl32 (movk_R0 | (insn & 0x1f), contents + rel->r_offset); |
| a06ea964 NC |
6655 | } |
| 6656 | return bfd_reloc_continue; | |
| 6657 | ||
| 259364ad JW |
6658 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
| 6659 | /* LD->LE relaxation (tiny): | |
| 6660 | adr x0, :tlsldm:x => mrs x0, tpidr_el0 | |
| c1fc2d7e YN |
6661 | bl __tls_get_addr => add R0, R0, TCB_SIZE |
| 6662 | ||
| 6663 | Where R is x for lp64 mode, and w for ilp32 mode. */ | |
| 976f1663 | 6664 | if (local_exec) |
| 259364ad JW |
6665 | { |
| 6666 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
| 6667 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); | |
| 6668 | /* No need of CALL26 relocation for tls_get_addr. */ | |
| 6669 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
| 6670 | bfd_putl32 (0xd53bd040, contents + rel->r_offset + 0); | |
| 2d0ca824 YN |
6671 | bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10), |
| 6672 | contents + rel->r_offset + 4); | |
| 259364ad JW |
6673 | return bfd_reloc_ok; |
| 6674 | } | |
| 6675 | return bfd_reloc_continue; | |
| 6676 | ||
| 6677 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: | |
| 6678 | /* LD->LE relaxation (small): | |
| 6679 | adrp x0, :tlsldm:x => mrs x0, tpidr_el0 | |
| 6680 | */ | |
| 976f1663 | 6681 | if (local_exec) |
| 259364ad JW |
6682 | { |
| 6683 | bfd_putl32 (0xd53bd040, contents + rel->r_offset); | |
| 6684 | return bfd_reloc_ok; | |
| 6685 | } | |
| 6686 | return bfd_reloc_continue; | |
| 6687 | ||
| 6688 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: | |
| 6689 | /* LD->LE relaxation (small): | |
| c1fc2d7e | 6690 | add x0, #:tlsldm_lo12:x => add R0, R0, TCB_SIZE |
| 259364ad | 6691 | bl __tls_get_addr => nop |
| c1fc2d7e YN |
6692 | |
| 6693 | Where R is x for lp64 mode, and w for ilp32 mode. */ | |
| 976f1663 | 6694 | if (local_exec) |
| 259364ad JW |
6695 | { |
| 6696 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
| 6697 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); | |
| 6698 | /* No need of CALL26 relocation for tls_get_addr. */ | |
| 6699 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
| 2d0ca824 YN |
6700 | bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10), |
| 6701 | contents + rel->r_offset + 0); | |
| c1fc2d7e | 6702 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4); |
| 259364ad JW |
6703 | return bfd_reloc_ok; |
| 6704 | } | |
| 6705 | return bfd_reloc_continue; | |
| 6706 | ||
| a06ea964 NC |
6707 | default: |
| 6708 | return bfd_reloc_continue; | |
| 6709 | } | |
| 6710 | ||
| 6711 | return bfd_reloc_ok; | |
| 6712 | } | |
| 6713 | ||
| 6714 | /* Relocate an AArch64 ELF section. */ | |
| 6715 | ||
| 0f684201 | 6716 | static int |
| cec5225b | 6717 | elfNN_aarch64_relocate_section (bfd *output_bfd, |
| a06ea964 NC |
6718 | struct bfd_link_info *info, |
| 6719 | bfd *input_bfd, | |
| 6720 | asection *input_section, | |
| 6721 | bfd_byte *contents, | |
| 6722 | Elf_Internal_Rela *relocs, | |
| 6723 | Elf_Internal_Sym *local_syms, | |
| 6724 | asection **local_sections) | |
| 6725 | { | |
| 6726 | Elf_Internal_Shdr *symtab_hdr; | |
| 6727 | struct elf_link_hash_entry **sym_hashes; | |
| 6728 | Elf_Internal_Rela *rel; | |
| 6729 | Elf_Internal_Rela *relend; | |
| 6730 | const char *name; | |
| cec5225b | 6731 | struct elf_aarch64_link_hash_table *globals; |
| 0a1b45a2 | 6732 | bool save_addend = false; |
| a06ea964 NC |
6733 | bfd_vma addend = 0; |
| 6734 | ||
| cec5225b | 6735 | globals = elf_aarch64_hash_table (info); |
| a06ea964 NC |
6736 | |
| 6737 | symtab_hdr = &elf_symtab_hdr (input_bfd); | |
| 6738 | sym_hashes = elf_sym_hashes (input_bfd); | |
| 6739 | ||
| 6740 | rel = relocs; | |
| 6741 | relend = relocs + input_section->reloc_count; | |
| 6742 | for (; rel < relend; rel++) | |
| 6743 | { | |
| 6744 | unsigned int r_type; | |
| a6bb11b2 YZ |
6745 | bfd_reloc_code_real_type bfd_r_type; |
| 6746 | bfd_reloc_code_real_type relaxed_bfd_r_type; | |
| a06ea964 NC |
6747 | reloc_howto_type *howto; |
| 6748 | unsigned long r_symndx; | |
| 6749 | Elf_Internal_Sym *sym; | |
| 6750 | asection *sec; | |
| 6751 | struct elf_link_hash_entry *h; | |
| 6752 | bfd_vma relocation; | |
| 6753 | bfd_reloc_status_type r; | |
| 6754 | arelent bfd_reloc; | |
| 6755 | char sym_type; | |
| 0a1b45a2 | 6756 | bool unresolved_reloc = false; |
| a06ea964 NC |
6757 | char *error_message = NULL; |
| 6758 | ||
| cec5225b YZ |
6759 | r_symndx = ELFNN_R_SYM (rel->r_info); |
| 6760 | r_type = ELFNN_R_TYPE (rel->r_info); | |
| a06ea964 | 6761 | |
| 0aa13fee AM |
6762 | bfd_reloc.howto = elfNN_aarch64_howto_from_type (input_bfd, r_type); |
| 6763 | howto = bfd_reloc.howto; | |
| a06ea964 | 6764 | |
| 7fcfd62d | 6765 | if (howto == NULL) |
| 47aeb64c NC |
6766 | return _bfd_unrecognized_reloc (input_bfd, input_section, r_type); |
| 6767 | ||
| a6bb11b2 | 6768 | bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto); |
| 7fcfd62d | 6769 | |
| a06ea964 NC |
6770 | h = NULL; |
| 6771 | sym = NULL; | |
| 6772 | sec = NULL; | |
| 6773 | ||
| 6774 | if (r_symndx < symtab_hdr->sh_info) | |
| 6775 | { | |
| 6776 | sym = local_syms + r_symndx; | |
| cec5225b | 6777 | sym_type = ELFNN_ST_TYPE (sym->st_info); |
| a06ea964 NC |
6778 | sec = local_sections[r_symndx]; |
| 6779 | ||
| 6780 | /* An object file might have a reference to a local | |
| 6781 | undefined symbol. This is a daft object file, but we | |
| 6782 | should at least do something about it. */ | |
| 6783 | if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL | |
| 6784 | && bfd_is_und_section (sec) | |
| 6785 | && ELF_ST_BIND (sym->st_info) != STB_WEAK) | |
| 1a72702b AM |
6786 | (*info->callbacks->undefined_symbol) |
| 6787 | (info, bfd_elf_string_from_elf_section | |
| 6788 | (input_bfd, symtab_hdr->sh_link, sym->st_name), | |
| 0a1b45a2 | 6789 | input_bfd, input_section, rel->r_offset, true); |
| a06ea964 | 6790 | |
| a06ea964 | 6791 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 1419bbe5 WN |
6792 | |
| 6793 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
| 0e1862bb | 6794 | if (!bfd_link_relocatable (info) |
| 1419bbe5 WN |
6795 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
| 6796 | { | |
| 6797 | h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd, | |
| 0a1b45a2 | 6798 | rel, false); |
| 1419bbe5 WN |
6799 | if (h == NULL) |
| 6800 | abort (); | |
| 6801 | ||
| 6802 | /* Set STT_GNU_IFUNC symbol value. */ | |
| 6803 | h->root.u.def.value = sym->st_value; | |
| 6804 | h->root.u.def.section = sec; | |
| 6805 | } | |
| a06ea964 NC |
6806 | } |
| 6807 | else | |
| 6808 | { | |
| 0a1b45a2 | 6809 | bool warned, ignored; |
| a06ea964 NC |
6810 | |
| 6811 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
| 6812 | r_symndx, symtab_hdr, sym_hashes, | |
| 6813 | h, sec, relocation, | |
| 62d887d4 | 6814 | unresolved_reloc, warned, ignored); |
| a06ea964 NC |
6815 | |
| 6816 | sym_type = h->type; | |
| 6817 | } | |
| 6818 | ||
| 6819 | if (sec != NULL && discarded_section (sec)) | |
| 6820 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
| 6821 | rel, 1, relend, howto, 0, contents); | |
| 6822 | ||
| 0e1862bb | 6823 | if (bfd_link_relocatable (info)) |
| 2e0488d3 | 6824 | continue; |
| a06ea964 NC |
6825 | |
| 6826 | if (h != NULL) | |
| 6827 | name = h->root.root.string; | |
| 6828 | else | |
| 6829 | { | |
| 6830 | name = (bfd_elf_string_from_elf_section | |
| 6831 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
| 6832 | if (name == NULL || *name == '\0') | |
| fd361982 | 6833 | name = bfd_section_name (sec); |
| a06ea964 NC |
6834 | } |
| 6835 | ||
| 6836 | if (r_symndx != 0 | |
| 6837 | && r_type != R_AARCH64_NONE | |
| 6838 | && r_type != R_AARCH64_NULL | |
| 6839 | && (h == NULL | |
| 6840 | || h->root.type == bfd_link_hash_defined | |
| 6841 | || h->root.type == bfd_link_hash_defweak) | |
| a6bb11b2 | 6842 | && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS)) |
| a06ea964 | 6843 | { |
| 4eca0228 | 6844 | _bfd_error_handler |
| a06ea964 | 6845 | ((sym_type == STT_TLS |
| 695344c0 | 6846 | /* xgettext:c-format */ |
| 2dcf00ce | 6847 | ? _("%pB(%pA+%#" PRIx64 "): %s used with TLS symbol %s") |
| 695344c0 | 6848 | /* xgettext:c-format */ |
| 2dcf00ce | 6849 | : _("%pB(%pA+%#" PRIx64 "): %s used with non-TLS symbol %s")), |
| a06ea964 | 6850 | input_bfd, |
| 2dcf00ce | 6851 | input_section, (uint64_t) rel->r_offset, howto->name, name); |
| a06ea964 NC |
6852 | } |
| 6853 | ||
| a06ea964 | 6854 | /* We relax only if we can see that there can be a valid transition |
| 07d6d2b8 AM |
6855 | from a reloc type to another. |
| 6856 | We call elfNN_aarch64_final_link_relocate unless we're completely | |
| 6857 | done, i.e., the relaxation produced the final output we want. */ | |
| a06ea964 | 6858 | |
| a6bb11b2 YZ |
6859 | relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, |
| 6860 | h, r_symndx); | |
| 6861 | if (relaxed_bfd_r_type != bfd_r_type) | |
| a06ea964 | 6862 | { |
| a6bb11b2 YZ |
6863 | bfd_r_type = relaxed_bfd_r_type; |
| 6864 | howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type); | |
| 6865 | BFD_ASSERT (howto != NULL); | |
| 6866 | r_type = howto->type; | |
| 9fca35fc | 6867 | r = elfNN_aarch64_tls_relax (globals, input_bfd, input_section, |
| 976f1663 | 6868 | contents, rel, h, info); |
| a06ea964 NC |
6869 | unresolved_reloc = 0; |
| 6870 | } | |
| 6871 | else | |
| 6872 | r = bfd_reloc_continue; | |
| 6873 | ||
| 6874 | /* There may be multiple consecutive relocations for the | |
| 07d6d2b8 AM |
6875 | same offset. In that case we are supposed to treat the |
| 6876 | output of each relocation as the addend for the next. */ | |
| a06ea964 NC |
6877 | if (rel + 1 < relend |
| 6878 | && rel->r_offset == rel[1].r_offset | |
| cec5225b YZ |
6879 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE |
| 6880 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL) | |
| 0a1b45a2 | 6881 | save_addend = true; |
| a06ea964 | 6882 | else |
| 0a1b45a2 | 6883 | save_addend = false; |
| a06ea964 NC |
6884 | |
| 6885 | if (r == bfd_reloc_continue) | |
| cec5225b | 6886 | r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd, |
| a06ea964 NC |
6887 | input_section, contents, rel, |
| 6888 | relocation, info, sec, | |
| 6889 | h, &unresolved_reloc, | |
| 1419bbe5 | 6890 | save_addend, &addend, sym); |
| a06ea964 | 6891 | |
| 0aa13fee | 6892 | switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type)) |
| a06ea964 | 6893 | { |
| ce336788 | 6894 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
| a6bb11b2 | 6895 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
| 3c12b054 | 6896 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
| 7ba7cfe4 | 6897 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
| 94facae3 | 6898 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
| 73f925cc | 6899 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
| f69e4920 | 6900 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
| 77a69ff8 | 6901 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
| a06ea964 NC |
6902 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
| 6903 | { | |
| 0a1b45a2 | 6904 | bool need_relocs = false; |
| a06ea964 NC |
6905 | bfd_byte *loc; |
| 6906 | int indx; | |
| 6907 | bfd_vma off; | |
| 6908 | ||
| 6909 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
| 6910 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
| 6911 | ||
| 6912 | need_relocs = | |
| 6dda7875 | 6913 | (!bfd_link_executable (info) || indx != 0) && |
| a06ea964 NC |
6914 | (h == NULL |
| 6915 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
| 6916 | || h->root.type != bfd_link_hash_undefweak); | |
| 6917 | ||
| 6918 | BFD_ASSERT (globals->root.srelgot != NULL); | |
| 6919 | ||
| 6920 | if (need_relocs) | |
| 6921 | { | |
| 6922 | Elf_Internal_Rela rela; | |
| a6bb11b2 | 6923 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD)); |
| a06ea964 NC |
6924 | rela.r_addend = 0; |
| 6925 | rela.r_offset = globals->root.sgot->output_section->vma + | |
| 6926 | globals->root.sgot->output_offset + off; | |
| 6927 | ||
| 6928 | ||
| 6929 | loc = globals->root.srelgot->contents; | |
| 6930 | loc += globals->root.srelgot->reloc_count++ | |
| 6931 | * RELOC_SIZE (htab); | |
| cec5225b | 6932 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
| a06ea964 | 6933 | |
| f69e4920 | 6934 | bfd_reloc_code_real_type real_type = |
| 0aa13fee | 6935 | elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
| f69e4920 JW |
6936 | |
| 6937 | if (real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 | |
| 73f925cc JW |
6938 | || real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 |
| 6939 | || real_type == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC) | |
| 77a69ff8 JW |
6940 | { |
| 6941 | /* For local dynamic, don't generate DTPREL in any case. | |
| 6942 | Initialize the DTPREL slot into zero, so we get module | |
| 6943 | base address when invoke runtime TLS resolver. */ | |
| 6944 | bfd_put_NN (output_bfd, 0, | |
| 6945 | globals->root.sgot->contents + off | |
| 6946 | + GOT_ENTRY_SIZE); | |
| 6947 | } | |
| 6948 | else if (indx == 0) | |
| a06ea964 | 6949 | { |
| cec5225b | 6950 | bfd_put_NN (output_bfd, |
| a06ea964 NC |
6951 | relocation - dtpoff_base (info), |
| 6952 | globals->root.sgot->contents + off | |
| 6953 | + GOT_ENTRY_SIZE); | |
| 6954 | } | |
| 6955 | else | |
| 6956 | { | |
| 6957 | /* This TLS symbol is global. We emit a | |
| 6958 | relocation to fixup the tls offset at load | |
| 6959 | time. */ | |
| 6960 | rela.r_info = | |
| a6bb11b2 | 6961 | ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL)); |
| a06ea964 NC |
6962 | rela.r_addend = 0; |
| 6963 | rela.r_offset = | |
| 6964 | (globals->root.sgot->output_section->vma | |
| 6965 | + globals->root.sgot->output_offset + off | |
| 6966 | + GOT_ENTRY_SIZE); | |
| 6967 | ||
| 6968 | loc = globals->root.srelgot->contents; | |
| 6969 | loc += globals->root.srelgot->reloc_count++ | |
| 6970 | * RELOC_SIZE (globals); | |
| cec5225b YZ |
6971 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
| 6972 | bfd_put_NN (output_bfd, (bfd_vma) 0, | |
| a06ea964 NC |
6973 | globals->root.sgot->contents + off |
| 6974 | + GOT_ENTRY_SIZE); | |
| 6975 | } | |
| 6976 | } | |
| 6977 | else | |
| 6978 | { | |
| cec5225b | 6979 | bfd_put_NN (output_bfd, (bfd_vma) 1, |
| a06ea964 | 6980 | globals->root.sgot->contents + off); |
| cec5225b | 6981 | bfd_put_NN (output_bfd, |
| a06ea964 NC |
6982 | relocation - dtpoff_base (info), |
| 6983 | globals->root.sgot->contents + off | |
| 6984 | + GOT_ENTRY_SIZE); | |
| 6985 | } | |
| 6986 | ||
| 6987 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
| 6988 | } | |
| 6989 | break; | |
| 6990 | ||
| a6bb11b2 YZ |
6991 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
| 6992 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
| 043bf05a | 6993 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
| 3b957e5b RL |
6994 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
| 6995 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
| a06ea964 NC |
6996 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
| 6997 | { | |
| 0a1b45a2 | 6998 | bool need_relocs = false; |
| a06ea964 NC |
6999 | bfd_byte *loc; |
| 7000 | int indx; | |
| 7001 | bfd_vma off; | |
| 7002 | ||
| 7003 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
| 7004 | ||
| 7005 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
| 7006 | ||
| 7007 | need_relocs = | |
| 6dda7875 | 7008 | (!bfd_link_executable (info) || indx != 0) && |
| a06ea964 NC |
7009 | (h == NULL |
| 7010 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
| 7011 | || h->root.type != bfd_link_hash_undefweak); | |
| 7012 | ||
| 7013 | BFD_ASSERT (globals->root.srelgot != NULL); | |
| 7014 | ||
| 7015 | if (need_relocs) | |
| 7016 | { | |
| 7017 | Elf_Internal_Rela rela; | |
| 7018 | ||
| 7019 | if (indx == 0) | |
| 7020 | rela.r_addend = relocation - dtpoff_base (info); | |
| 7021 | else | |
| 7022 | rela.r_addend = 0; | |
| 7023 | ||
| a6bb11b2 | 7024 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL)); |
| a06ea964 NC |
7025 | rela.r_offset = globals->root.sgot->output_section->vma + |
| 7026 | globals->root.sgot->output_offset + off; | |
| 7027 | ||
| 7028 | loc = globals->root.srelgot->contents; | |
| 7029 | loc += globals->root.srelgot->reloc_count++ | |
| 7030 | * RELOC_SIZE (htab); | |
| 7031 | ||
| cec5225b | 7032 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
| a06ea964 | 7033 | |
| cec5225b | 7034 | bfd_put_NN (output_bfd, rela.r_addend, |
| a06ea964 NC |
7035 | globals->root.sgot->contents + off); |
| 7036 | } | |
| 7037 | else | |
| cec5225b | 7038 | bfd_put_NN (output_bfd, relocation - tpoff_base (info), |
| a06ea964 NC |
7039 | globals->root.sgot->contents + off); |
| 7040 | ||
| 7041 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
| 7042 | } | |
| 7043 | break; | |
| 7044 | ||
| f955cccf | 7045 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
| a6bb11b2 | 7046 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
| 389b8029 | 7047 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
| a6bb11b2 | 7048 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
| 1ada945d | 7049 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
| 0484b454 RL |
7050 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
| 7051 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
| a06ea964 NC |
7052 | if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx)) |
| 7053 | { | |
| 0a1b45a2 | 7054 | bool need_relocs = false; |
| a06ea964 NC |
7055 | int indx = h && h->dynindx != -1 ? h->dynindx : 0; |
| 7056 | bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx); | |
| 7057 | ||
| 7058 | need_relocs = (h == NULL | |
| 7059 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
| 7060 | || h->root.type != bfd_link_hash_undefweak); | |
| 7061 | ||
| 7062 | BFD_ASSERT (globals->root.srelgot != NULL); | |
| 7063 | BFD_ASSERT (globals->root.sgot != NULL); | |
| 7064 | ||
| 7065 | if (need_relocs) | |
| 7066 | { | |
| 7067 | bfd_byte *loc; | |
| 7068 | Elf_Internal_Rela rela; | |
| a6bb11b2 YZ |
7069 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC)); |
| 7070 | ||
| a06ea964 NC |
7071 | rela.r_addend = 0; |
| 7072 | rela.r_offset = (globals->root.sgotplt->output_section->vma | |
| 7073 | + globals->root.sgotplt->output_offset | |
| 7074 | + off + globals->sgotplt_jump_table_size); | |
| 7075 | ||
| 7076 | if (indx == 0) | |
| 7077 | rela.r_addend = relocation - dtpoff_base (info); | |
| 7078 | ||
| 7079 | /* Allocate the next available slot in the PLT reloc | |
| 7080 | section to hold our R_AARCH64_TLSDESC, the next | |
| 7081 | available slot is determined from reloc_count, | |
| 7082 | which we step. But note, reloc_count was | |
| 7083 | artifically moved down while allocating slots for | |
| 7084 | real PLT relocs such that all of the PLT relocs | |
| 7085 | will fit above the initial reloc_count and the | |
| 7086 | extra stuff will fit below. */ | |
| 7087 | loc = globals->root.srelplt->contents; | |
| 7088 | loc += globals->root.srelplt->reloc_count++ | |
| 7089 | * RELOC_SIZE (globals); | |
| 7090 | ||
| cec5225b | 7091 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
| a06ea964 | 7092 | |
| cec5225b | 7093 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
| a06ea964 NC |
7094 | globals->root.sgotplt->contents + off + |
| 7095 | globals->sgotplt_jump_table_size); | |
| cec5225b | 7096 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
| a06ea964 NC |
7097 | globals->root.sgotplt->contents + off + |
| 7098 | globals->sgotplt_jump_table_size + | |
| 7099 | GOT_ENTRY_SIZE); | |
| 7100 | } | |
| 7101 | ||
| 7102 | symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx); | |
| 7103 | } | |
| 7104 | break; | |
| a6bb11b2 YZ |
7105 | default: |
| 7106 | break; | |
| a06ea964 NC |
7107 | } |
| 7108 | ||
| a06ea964 | 7109 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
| 07d6d2b8 AM |
7110 | because such sections are not SEC_ALLOC and thus ld.so will |
| 7111 | not process them. */ | |
| a06ea964 NC |
7112 | if (unresolved_reloc |
| 7113 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
| 7114 | && h->def_dynamic) | |
| 7115 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
| 7116 | +rel->r_offset) != (bfd_vma) - 1) | |
| 7117 | { | |
| 4eca0228 | 7118 | _bfd_error_handler |
| 695344c0 | 7119 | /* xgettext:c-format */ |
| 2dcf00ce AM |
7120 | (_("%pB(%pA+%#" PRIx64 "): " |
| 7121 | "unresolvable %s relocation against symbol `%s'"), | |
| 7122 | input_bfd, input_section, (uint64_t) rel->r_offset, howto->name, | |
| a06ea964 | 7123 | h->root.root.string); |
| 0a1b45a2 | 7124 | return false; |
| a06ea964 NC |
7125 | } |
| 7126 | ||
| 7127 | if (r != bfd_reloc_ok && r != bfd_reloc_continue) | |
| 7128 | { | |
| c674f5cd | 7129 | bfd_reloc_code_real_type real_r_type |
| 0aa13fee | 7130 | = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
| c674f5cd | 7131 | |
| a06ea964 NC |
7132 | switch (r) |
| 7133 | { | |
| 7134 | case bfd_reloc_overflow: | |
| 1a72702b AM |
7135 | (*info->callbacks->reloc_overflow) |
| 7136 | (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, | |
| 7137 | input_bfd, input_section, rel->r_offset); | |
| c674f5cd JW |
7138 | if (real_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
| 7139 | || real_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
| 7140 | { | |
| 7141 | (*info->callbacks->warning) | |
| 7142 | (info, | |
| 90b6238f | 7143 | _("too many GOT entries for -fpic, " |
| c674f5cd JW |
7144 | "please recompile with -fPIC"), |
| 7145 | name, input_bfd, input_section, rel->r_offset); | |
| 0a1b45a2 | 7146 | return false; |
| c674f5cd | 7147 | } |
| 027e9c75 NC |
7148 | /* Overflow can occur when a variable is referenced with a type |
| 7149 | that has a larger alignment than the type with which it was | |
| 7150 | declared. eg: | |
| 7151 | file1.c: extern int foo; int a (void) { return foo; } | |
| 7152 | file2.c: char bar, foo, baz; | |
| 7153 | If the variable is placed into a data section at an offset | |
| 7154 | that is incompatible with the larger alignment requirement | |
| 7155 | overflow will occur. (Strictly speaking this is not overflow | |
| 7156 | but rather an alignment problem, but the bfd_reloc_ error | |
| 7157 | enum does not have a value to cover that situation). | |
| 7158 | ||
| 7159 | Try to catch this situation here and provide a more helpful | |
| 7160 | error message to the user. */ | |
| 26009aa7 | 7161 | if (addend & (((bfd_vma) 1 << howto->rightshift) - 1) |
| 027e9c75 NC |
7162 | /* FIXME: Are we testing all of the appropriate reloc |
| 7163 | types here ? */ | |
| 7164 | && (real_r_type == BFD_RELOC_AARCH64_LD_LO19_PCREL | |
| 7165 | || real_r_type == BFD_RELOC_AARCH64_LDST16_LO12 | |
| 7166 | || real_r_type == BFD_RELOC_AARCH64_LDST32_LO12 | |
| 7167 | || real_r_type == BFD_RELOC_AARCH64_LDST64_LO12 | |
| 7168 | || real_r_type == BFD_RELOC_AARCH64_LDST128_LO12)) | |
| 7169 | { | |
| 7170 | info->callbacks->warning | |
| 90b6238f | 7171 | (info, _("one possible cause of this error is that the \ |
| 027e9c75 | 7172 | symbol is being referenced in the indicated code as if it had a larger \ |
| 90b6238f | 7173 | alignment than was declared where it was defined"), |
| 027e9c75 NC |
7174 | name, input_bfd, input_section, rel->r_offset); |
| 7175 | } | |
| a06ea964 NC |
7176 | break; |
| 7177 | ||
| 7178 | case bfd_reloc_undefined: | |
| 1a72702b | 7179 | (*info->callbacks->undefined_symbol) |
| 0a1b45a2 | 7180 | (info, name, input_bfd, input_section, rel->r_offset, true); |
| a06ea964 NC |
7181 | break; |
| 7182 | ||
| 7183 | case bfd_reloc_outofrange: | |
| 7184 | error_message = _("out of range"); | |
| 7185 | goto common_error; | |
| 7186 | ||
| 7187 | case bfd_reloc_notsupported: | |
| 7188 | error_message = _("unsupported relocation"); | |
| 7189 | goto common_error; | |
| 7190 | ||
| 7191 | case bfd_reloc_dangerous: | |
| 7192 | /* error_message should already be set. */ | |
| 7193 | goto common_error; | |
| 7194 | ||
| 7195 | default: | |
| 7196 | error_message = _("unknown error"); | |
| 7197 | /* Fall through. */ | |
| 7198 | ||
| 7199 | common_error: | |
| 7200 | BFD_ASSERT (error_message != NULL); | |
| 1a72702b AM |
7201 | (*info->callbacks->reloc_dangerous) |
| 7202 | (info, error_message, input_bfd, input_section, rel->r_offset); | |
| a06ea964 NC |
7203 | break; |
| 7204 | } | |
| 7205 | } | |
| 027e9c75 NC |
7206 | |
| 7207 | if (!save_addend) | |
| 7208 | addend = 0; | |
| a06ea964 NC |
7209 | } |
| 7210 | ||
| 0a1b45a2 | 7211 | return true; |
| a06ea964 NC |
7212 | } |
| 7213 | ||
| 7214 | /* Set the right machine number. */ | |
| 7215 | ||
| 0a1b45a2 | 7216 | static bool |
| cec5225b | 7217 | elfNN_aarch64_object_p (bfd *abfd) |
| a06ea964 | 7218 | { |
| cec5225b YZ |
7219 | #if ARCH_SIZE == 32 |
| 7220 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32); | |
| 7221 | #else | |
| a06ea964 | 7222 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64); |
| cec5225b | 7223 | #endif |
| 0a1b45a2 | 7224 | return true; |
| a06ea964 NC |
7225 | } |
| 7226 | ||
| 7227 | /* Function to keep AArch64 specific flags in the ELF header. */ | |
| 7228 | ||
| 0a1b45a2 | 7229 | static bool |
| cec5225b | 7230 | elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags) |
| a06ea964 NC |
7231 | { |
| 7232 | if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags) | |
| 7233 | { | |
| 7234 | } | |
| 7235 | else | |
| 7236 | { | |
| 7237 | elf_elfheader (abfd)->e_flags = flags; | |
| 0a1b45a2 | 7238 | elf_flags_init (abfd) = true; |
| a06ea964 NC |
7239 | } |
| 7240 | ||
| 0a1b45a2 | 7241 | return true; |
| a06ea964 NC |
7242 | } |
| 7243 | ||
| a06ea964 NC |
7244 | /* Merge backend specific data from an object file to the output |
| 7245 | object file when linking. */ | |
| 7246 | ||
| 0a1b45a2 | 7247 | static bool |
| 50e03d47 | 7248 | elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
| a06ea964 | 7249 | { |
| 50e03d47 | 7250 | bfd *obfd = info->output_bfd; |
| a06ea964 NC |
7251 | flagword out_flags; |
| 7252 | flagword in_flags; | |
| 0a1b45a2 | 7253 | bool flags_compatible = true; |
| a06ea964 NC |
7254 | asection *sec; |
| 7255 | ||
| 7256 | /* Check if we have the same endianess. */ | |
| 50e03d47 | 7257 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
| 0a1b45a2 | 7258 | return false; |
| a06ea964 NC |
7259 | |
| 7260 | if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd)) | |
| 0a1b45a2 | 7261 | return true; |
| a06ea964 NC |
7262 | |
| 7263 | /* The input BFD must have had its flags initialised. */ | |
| 7264 | /* The following seems bogus to me -- The flags are initialized in | |
| 7265 | the assembler but I don't think an elf_flags_init field is | |
| 7266 | written into the object. */ | |
| 7267 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ | |
| 7268 | ||
| 7269 | in_flags = elf_elfheader (ibfd)->e_flags; | |
| 7270 | out_flags = elf_elfheader (obfd)->e_flags; | |
| 7271 | ||
| 7272 | if (!elf_flags_init (obfd)) | |
| 7273 | { | |
| 7274 | /* If the input is the default architecture and had the default | |
| 07d6d2b8 AM |
7275 | flags then do not bother setting the flags for the output |
| 7276 | architecture, instead allow future merges to do this. If no | |
| 7277 | future merges ever set these flags then they will retain their | |
| 7278 | uninitialised values, which surprise surprise, correspond | |
| 7279 | to the default values. */ | |
| a06ea964 NC |
7280 | if (bfd_get_arch_info (ibfd)->the_default |
| 7281 | && elf_elfheader (ibfd)->e_flags == 0) | |
| 0a1b45a2 | 7282 | return true; |
| a06ea964 | 7283 | |
| 0a1b45a2 | 7284 | elf_flags_init (obfd) = true; |
| a06ea964 NC |
7285 | elf_elfheader (obfd)->e_flags = in_flags; |
| 7286 | ||
| 7287 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
| 7288 | && bfd_get_arch_info (obfd)->the_default) | |
| 7289 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
| 7290 | bfd_get_mach (ibfd)); | |
| 7291 | ||
| 0a1b45a2 | 7292 | return true; |
| a06ea964 NC |
7293 | } |
| 7294 | ||
| 7295 | /* Identical flags must be compatible. */ | |
| 7296 | if (in_flags == out_flags) | |
| 0a1b45a2 | 7297 | return true; |
| a06ea964 NC |
7298 | |
| 7299 | /* Check to see if the input BFD actually contains any sections. If | |
| 7300 | not, its flags may not have been initialised either, but it | |
| 7301 | cannot actually cause any incompatiblity. Do not short-circuit | |
| 7302 | dynamic objects; their section list may be emptied by | |
| 7303 | elf_link_add_object_symbols. | |
| 7304 | ||
| 7305 | Also check to see if there are no code sections in the input. | |
| 7306 | In this case there is no need to check for code specific flags. | |
| 7307 | XXX - do we need to worry about floating-point format compatability | |
| 7308 | in data sections ? */ | |
| 7309 | if (!(ibfd->flags & DYNAMIC)) | |
| 7310 | { | |
| 0a1b45a2 AM |
7311 | bool null_input_bfd = true; |
| 7312 | bool only_data_sections = true; | |
| a06ea964 NC |
7313 | |
| 7314 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
| 7315 | { | |
| fd361982 | 7316 | if ((bfd_section_flags (sec) |
| a06ea964 NC |
7317 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) |
| 7318 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
| 0a1b45a2 | 7319 | only_data_sections = false; |
| a06ea964 | 7320 | |
| 0a1b45a2 | 7321 | null_input_bfd = false; |
| a06ea964 NC |
7322 | break; |
| 7323 | } | |
| 7324 | ||
| 7325 | if (null_input_bfd || only_data_sections) | |
| 0a1b45a2 | 7326 | return true; |
| a06ea964 NC |
7327 | } |
| 7328 | ||
| 7329 | return flags_compatible; | |
| 7330 | } | |
| 7331 | ||
| 7332 | /* Display the flags field. */ | |
| 7333 | ||
| 0a1b45a2 | 7334 | static bool |
| cec5225b | 7335 | elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr) |
| a06ea964 NC |
7336 | { |
| 7337 | FILE *file = (FILE *) ptr; | |
| 7338 | unsigned long flags; | |
| 7339 | ||
| 7340 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
| 7341 | ||
| 7342 | /* Print normal ELF private data. */ | |
| 7343 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
| 7344 | ||
| 7345 | flags = elf_elfheader (abfd)->e_flags; | |
| 7346 | /* Ignore init flag - it may not be set, despite the flags field | |
| 7347 | containing valid data. */ | |
| 7348 | ||
| 7349 | /* xgettext:c-format */ | |
| dbb078f6 | 7350 | fprintf (file, _("private flags = 0x%lx:"), elf_elfheader (abfd)->e_flags); |
| a06ea964 NC |
7351 | |
| 7352 | if (flags) | |
| dbb078f6 | 7353 | fprintf (file, _(" <Unrecognised flag bits set>")); |
| a06ea964 NC |
7354 | |
| 7355 | fputc ('\n', file); | |
| 7356 | ||
| 0a1b45a2 | 7357 | return true; |
| a06ea964 NC |
7358 | } |
| 7359 | ||
| 6353d82b JW |
7360 | /* Return true if we need copy relocation against EH. */ |
| 7361 | ||
| 0a1b45a2 | 7362 | static bool |
| 6353d82b JW |
7363 | need_copy_relocation_p (struct elf_aarch64_link_hash_entry *eh) |
| 7364 | { | |
| 7365 | struct elf_dyn_relocs *p; | |
| 7366 | asection *s; | |
| 7367 | ||
| 190eb1dd | 7368 | for (p = eh->root.dyn_relocs; p != NULL; p = p->next) |
| 6353d82b JW |
7369 | { |
| 7370 | /* If there is any pc-relative reference, we need to keep copy relocation | |
| 7371 | to avoid propagating the relocation into runtime that current glibc | |
| 7372 | does not support. */ | |
| 7373 | if (p->pc_count) | |
| 0a1b45a2 | 7374 | return true; |
| 6353d82b JW |
7375 | |
| 7376 | s = p->sec->output_section; | |
| 7377 | /* Need copy relocation if it's against read-only section. */ | |
| 7378 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
| 0a1b45a2 | 7379 | return true; |
| 6353d82b JW |
7380 | } |
| 7381 | ||
| 0a1b45a2 | 7382 | return false; |
| 6353d82b JW |
7383 | } |
| 7384 | ||
| a06ea964 NC |
7385 | /* Adjust a symbol defined by a dynamic object and referenced by a |
| 7386 | regular object. The current definition is in some section of the | |
| 7387 | dynamic object, but we're not including those sections. We have to | |
| 7388 | change the definition to something the rest of the link can | |
| 7389 | understand. */ | |
| 7390 | ||
| 0a1b45a2 | 7391 | static bool |
| cec5225b | 7392 | elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info, |
| a06ea964 NC |
7393 | struct elf_link_hash_entry *h) |
| 7394 | { | |
| cec5225b | 7395 | struct elf_aarch64_link_hash_table *htab; |
| 5474d94f | 7396 | asection *s, *srel; |
| a06ea964 NC |
7397 | |
| 7398 | /* If this is a function, put it in the procedure linkage table. We | |
| 7399 | will fill in the contents of the procedure linkage table later, | |
| 7400 | when we know the address of the .got section. */ | |
| 1419bbe5 | 7401 | if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt) |
| a06ea964 NC |
7402 | { |
| 7403 | if (h->plt.refcount <= 0 | |
| 1419bbe5 WN |
7404 | || (h->type != STT_GNU_IFUNC |
| 7405 | && (SYMBOL_CALLS_LOCAL (info, h) | |
| 7406 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
| 7407 | && h->root.type == bfd_link_hash_undefweak)))) | |
| a06ea964 NC |
7408 | { |
| 7409 | /* This case can occur if we saw a CALL26 reloc in | |
| 7410 | an input file, but the symbol wasn't referred to | |
| 7411 | by a dynamic object or all references were | |
| 7412 | garbage collected. In which case we can end up | |
| 7413 | resolving. */ | |
| 7414 | h->plt.offset = (bfd_vma) - 1; | |
| 7415 | h->needs_plt = 0; | |
| 7416 | } | |
| 7417 | ||
| 0a1b45a2 | 7418 | return true; |
| a06ea964 NC |
7419 | } |
| 7420 | else | |
| 80de0c6d | 7421 | /* Otherwise, reset to -1. */ |
| a06ea964 NC |
7422 | h->plt.offset = (bfd_vma) - 1; |
| 7423 | ||
| 7424 | ||
| 7425 | /* If this is a weak symbol, and there is a real definition, the | |
| 7426 | processor independent code will have arranged for us to see the | |
| 7427 | real definition first, and we can just use the same value. */ | |
| 60d67dc8 | 7428 | if (h->is_weakalias) |
| a06ea964 | 7429 | { |
| 60d67dc8 AM |
7430 | struct elf_link_hash_entry *def = weakdef (h); |
| 7431 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
| 7432 | h->root.u.def.section = def->root.u.def.section; | |
| 7433 | h->root.u.def.value = def->root.u.def.value; | |
| a06ea964 | 7434 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
| 60d67dc8 | 7435 | h->non_got_ref = def->non_got_ref; |
| 0a1b45a2 | 7436 | return true; |
| a06ea964 NC |
7437 | } |
| 7438 | ||
| 7439 | /* If we are creating a shared library, we must presume that the | |
| 7440 | only references to the symbol are via the global offset table. | |
| 7441 | For such cases we need not do anything here; the relocations will | |
| 7442 | be handled correctly by relocate_section. */ | |
| 0e1862bb | 7443 | if (bfd_link_pic (info)) |
| 0a1b45a2 | 7444 | return true; |
| a06ea964 NC |
7445 | |
| 7446 | /* If there are no references to this symbol that do not use the | |
| 7447 | GOT, we don't need to generate a copy reloc. */ | |
| 7448 | if (!h->non_got_ref) | |
| 0a1b45a2 | 7449 | return true; |
| a06ea964 NC |
7450 | |
| 7451 | /* If -z nocopyreloc was given, we won't generate them either. */ | |
| 7452 | if (info->nocopyreloc) | |
| 7453 | { | |
| 7454 | h->non_got_ref = 0; | |
| 0a1b45a2 | 7455 | return true; |
| a06ea964 NC |
7456 | } |
| 7457 | ||
| 6353d82b JW |
7458 | if (ELIMINATE_COPY_RELOCS) |
| 7459 | { | |
| 7460 | struct elf_aarch64_link_hash_entry *eh; | |
| dce2246a | 7461 | /* If we don't find any dynamic relocs in read-only sections, then |
| 6353d82b JW |
7462 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
| 7463 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
| 7464 | if (!need_copy_relocation_p (eh)) | |
| 7465 | { | |
| 7466 | h->non_got_ref = 0; | |
| 0a1b45a2 | 7467 | return true; |
| 6353d82b JW |
7468 | } |
| 7469 | } | |
| 7470 | ||
| a06ea964 NC |
7471 | /* We must allocate the symbol in our .dynbss section, which will |
| 7472 | become part of the .bss section of the executable. There will be | |
| 7473 | an entry for this symbol in the .dynsym section. The dynamic | |
| 7474 | object will contain position independent code, so all references | |
| 7475 | from the dynamic object to this symbol will go through the global | |
| 7476 | offset table. The dynamic linker will use the .dynsym entry to | |
| 7477 | determine the address it must put in the global offset table, so | |
| 7478 | both the dynamic object and the regular object will refer to the | |
| 7479 | same memory location for the variable. */ | |
| 7480 | ||
| cec5225b | 7481 | htab = elf_aarch64_hash_table (info); |
| a06ea964 NC |
7482 | |
| 7483 | /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker | |
| 7484 | to copy the initial value out of the dynamic object and into the | |
| 7485 | runtime process image. */ | |
| 5474d94f AM |
7486 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
| 7487 | { | |
| 7488 | s = htab->root.sdynrelro; | |
| 7489 | srel = htab->root.sreldynrelro; | |
| 7490 | } | |
| 7491 | else | |
| 7492 | { | |
| 7493 | s = htab->root.sdynbss; | |
| 7494 | srel = htab->root.srelbss; | |
| 7495 | } | |
| a06ea964 NC |
7496 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
| 7497 | { | |
| 5474d94f | 7498 | srel->size += RELOC_SIZE (htab); |
| a06ea964 NC |
7499 | h->needs_copy = 1; |
| 7500 | } | |
| 7501 | ||
| 6cabe1ea | 7502 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
| a06ea964 NC |
7503 | |
| 7504 | } | |
| 7505 | ||
| 0a1b45a2 | 7506 | static bool |
| cec5225b | 7507 | elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number) |
| a06ea964 NC |
7508 | { |
| 7509 | struct elf_aarch64_local_symbol *locals; | |
| cec5225b | 7510 | locals = elf_aarch64_locals (abfd); |
| a06ea964 NC |
7511 | if (locals == NULL) |
| 7512 | { | |
| 7513 | locals = (struct elf_aarch64_local_symbol *) | |
| 7514 | bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol)); | |
| 7515 | if (locals == NULL) | |
| 0a1b45a2 | 7516 | return false; |
| cec5225b | 7517 | elf_aarch64_locals (abfd) = locals; |
| a06ea964 | 7518 | } |
| 0a1b45a2 | 7519 | return true; |
| a06ea964 NC |
7520 | } |
| 7521 | ||
| cc0efaa8 MS |
7522 | /* Create the .got section to hold the global offset table. */ |
| 7523 | ||
| 0a1b45a2 | 7524 | static bool |
| cc0efaa8 MS |
7525 | aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) |
| 7526 | { | |
| 7527 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
| 7528 | flagword flags; | |
| 7529 | asection *s; | |
| 7530 | struct elf_link_hash_entry *h; | |
| 7531 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
| 7532 | ||
| 7533 | /* This function may be called more than once. */ | |
| ce558b89 | 7534 | if (htab->sgot != NULL) |
| 0a1b45a2 | 7535 | return true; |
| cc0efaa8 MS |
7536 | |
| 7537 | flags = bed->dynamic_sec_flags; | |
| 7538 | ||
| 7539 | s = bfd_make_section_anyway_with_flags (abfd, | |
| 7540 | (bed->rela_plts_and_copies_p | |
| 7541 | ? ".rela.got" : ".rel.got"), | |
| 7542 | (bed->dynamic_sec_flags | |
| 7543 | | SEC_READONLY)); | |
| 7544 | if (s == NULL | |
| fd361982 | 7545 | || !bfd_set_section_alignment (s, bed->s->log_file_align)) |
| 0a1b45a2 | 7546 | return false; |
| cc0efaa8 MS |
7547 | htab->srelgot = s; |
| 7548 | ||
| 7549 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); | |
| 7550 | if (s == NULL | |
| fd361982 | 7551 | || !bfd_set_section_alignment (s, bed->s->log_file_align)) |
| 0a1b45a2 | 7552 | return false; |
| cc0efaa8 MS |
7553 | htab->sgot = s; |
| 7554 | htab->sgot->size += GOT_ENTRY_SIZE; | |
| 7555 | ||
| 7556 | if (bed->want_got_sym) | |
| 7557 | { | |
| 7558 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
| 7559 | (or .got.plt) section. We don't do this in the linker script | |
| 7560 | because we don't want to define the symbol if we are not creating | |
| 7561 | a global offset table. */ | |
| 7562 | h = _bfd_elf_define_linkage_sym (abfd, info, s, | |
| 7563 | "_GLOBAL_OFFSET_TABLE_"); | |
| 7564 | elf_hash_table (info)->hgot = h; | |
| 7565 | if (h == NULL) | |
| 0a1b45a2 | 7566 | return false; |
| cc0efaa8 MS |
7567 | } |
| 7568 | ||
| 7569 | if (bed->want_got_plt) | |
| 7570 | { | |
| 7571 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); | |
| 7572 | if (s == NULL | |
| fd361982 | 7573 | || !bfd_set_section_alignment (s, bed->s->log_file_align)) |
| 0a1b45a2 | 7574 | return false; |
| cc0efaa8 MS |
7575 | htab->sgotplt = s; |
| 7576 | } | |
| 7577 | ||
| 7578 | /* The first bit of the global offset table is the header. */ | |
| 7579 | s->size += bed->got_header_size; | |
| 7580 | ||
| 0a1b45a2 | 7581 | return true; |
| cc0efaa8 MS |
7582 | } |
| 7583 | ||
| a06ea964 NC |
7584 | /* Look through the relocs for a section during the first phase. */ |
| 7585 | ||
| 0a1b45a2 | 7586 | static bool |
| cec5225b | 7587 | elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
| a06ea964 NC |
7588 | asection *sec, const Elf_Internal_Rela *relocs) |
| 7589 | { | |
| 7590 | Elf_Internal_Shdr *symtab_hdr; | |
| 7591 | struct elf_link_hash_entry **sym_hashes; | |
| 7592 | const Elf_Internal_Rela *rel; | |
| 7593 | const Elf_Internal_Rela *rel_end; | |
| 7594 | asection *sreloc; | |
| 7595 | ||
| cec5225b | 7596 | struct elf_aarch64_link_hash_table *htab; |
| a06ea964 | 7597 | |
| 0e1862bb | 7598 | if (bfd_link_relocatable (info)) |
| 0a1b45a2 | 7599 | return true; |
| a06ea964 NC |
7600 | |
| 7601 | BFD_ASSERT (is_aarch64_elf (abfd)); | |
| 7602 | ||
| cec5225b | 7603 | htab = elf_aarch64_hash_table (info); |
| a06ea964 NC |
7604 | sreloc = NULL; |
| 7605 | ||
| 7606 | symtab_hdr = &elf_symtab_hdr (abfd); | |
| 7607 | sym_hashes = elf_sym_hashes (abfd); | |
| a06ea964 NC |
7608 | |
| 7609 | rel_end = relocs + sec->reloc_count; | |
| 7610 | for (rel = relocs; rel < rel_end; rel++) | |
| 7611 | { | |
| 7612 | struct elf_link_hash_entry *h; | |
| d42c267e | 7613 | unsigned int r_symndx; |
| a06ea964 | 7614 | unsigned int r_type; |
| a6bb11b2 | 7615 | bfd_reloc_code_real_type bfd_r_type; |
| 1419bbe5 | 7616 | Elf_Internal_Sym *isym; |
| a06ea964 | 7617 | |
| cec5225b YZ |
7618 | r_symndx = ELFNN_R_SYM (rel->r_info); |
| 7619 | r_type = ELFNN_R_TYPE (rel->r_info); | |
| a06ea964 NC |
7620 | |
| 7621 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
| 7622 | { | |
| 695344c0 | 7623 | /* xgettext:c-format */ |
| 871b3ab2 | 7624 | _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd, r_symndx); |
| 0a1b45a2 | 7625 | return false; |
| a06ea964 NC |
7626 | } |
| 7627 | ||
| ed5acf27 | 7628 | if (r_symndx < symtab_hdr->sh_info) |
| 1419bbe5 WN |
7629 | { |
| 7630 | /* A local symbol. */ | |
| f1dfbfdb | 7631 | isym = bfd_sym_from_r_symndx (&htab->root.sym_cache, |
| 1419bbe5 WN |
7632 | abfd, r_symndx); |
| 7633 | if (isym == NULL) | |
| 0a1b45a2 | 7634 | return false; |
| 1419bbe5 WN |
7635 | |
| 7636 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
| 7637 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
| 7638 | { | |
| 7639 | h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, | |
| 0a1b45a2 | 7640 | true); |
| 1419bbe5 | 7641 | if (h == NULL) |
| 0a1b45a2 | 7642 | return false; |
| 1419bbe5 WN |
7643 | |
| 7644 | /* Fake a STT_GNU_IFUNC symbol. */ | |
| 7645 | h->type = STT_GNU_IFUNC; | |
| 7646 | h->def_regular = 1; | |
| 7647 | h->ref_regular = 1; | |
| 7648 | h->forced_local = 1; | |
| 7649 | h->root.type = bfd_link_hash_defined; | |
| 7650 | } | |
| 7651 | else | |
| 7652 | h = NULL; | |
| 7653 | } | |
| a06ea964 NC |
7654 | else |
| 7655 | { | |
| 7656 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
| 7657 | while (h->root.type == bfd_link_hash_indirect | |
| 7658 | || h->root.type == bfd_link_hash_warning) | |
| 7659 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
| 7660 | } | |
| 7661 | ||
| 7662 | /* Could be done earlier, if h were already available. */ | |
| a6bb11b2 | 7663 | bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx); |
| a06ea964 | 7664 | |
| 1419bbe5 WN |
7665 | if (h != NULL) |
| 7666 | { | |
| 18f822a0 JW |
7667 | /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. |
| 7668 | This shows up in particular in an R_AARCH64_PREL64 in large model | |
| 7669 | when calculating the pc-relative address to .got section which is | |
| 7670 | used to initialize the gp register. */ | |
| 7671 | if (h->root.root.string | |
| 7672 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
| 7673 | { | |
| 7674 | if (htab->root.dynobj == NULL) | |
| 7675 | htab->root.dynobj = abfd; | |
| 7676 | ||
| 7677 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
| 0a1b45a2 | 7678 | return false; |
| 18f822a0 JW |
7679 | |
| 7680 | BFD_ASSERT (h == htab->root.hgot); | |
| 7681 | } | |
| 7682 | ||
| 1419bbe5 WN |
7683 | /* Create the ifunc sections for static executables. If we |
| 7684 | never see an indirect function symbol nor we are building | |
| 7685 | a static executable, those sections will be empty and | |
| 7686 | won't appear in output. */ | |
| 7687 | switch (bfd_r_type) | |
| 7688 | { | |
| 7689 | default: | |
| 7690 | break; | |
| 7691 | ||
| ce336788 JW |
7692 | case BFD_RELOC_AARCH64_ADD_LO12: |
| 7693 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: | |
| 7694 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
| 1419bbe5 | 7695 | case BFD_RELOC_AARCH64_CALL26: |
| ce336788 | 7696 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
| 1419bbe5 | 7697 | case BFD_RELOC_AARCH64_JUMP26: |
| 7018c030 | 7698 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
| 1419bbe5 | 7699 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
| a2e1db00 | 7700 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
| 99ad26cb | 7701 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
| 1419bbe5 | 7702 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
| dc8008f5 | 7703 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
| 74a1bfe1 | 7704 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
| ce336788 | 7705 | case BFD_RELOC_AARCH64_NN: |
| 1419bbe5 WN |
7706 | if (htab->root.dynobj == NULL) |
| 7707 | htab->root.dynobj = abfd; | |
| 7708 | if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info)) | |
| 0a1b45a2 | 7709 | return false; |
| 1419bbe5 WN |
7710 | break; |
| 7711 | } | |
| 7712 | ||
| 2d0ca824 | 7713 | /* It is referenced by a non-shared object. */ |
| 1419bbe5 | 7714 | h->ref_regular = 1; |
| 1419bbe5 WN |
7715 | } |
| 7716 | ||
| a6bb11b2 | 7717 | switch (bfd_r_type) |
| a06ea964 | 7718 | { |
| 79e74192 RL |
7719 | case BFD_RELOC_AARCH64_16: |
| 7720 | #if ARCH_SIZE == 64 | |
| 7721 | case BFD_RELOC_AARCH64_32: | |
| 7722 | #endif | |
| 279b2f94 | 7723 | if (bfd_link_pic (info) && (sec->flags & SEC_ALLOC) != 0) |
| 79e74192 | 7724 | { |
| 279b2f94 RL |
7725 | if (h != NULL |
| 7726 | /* This is an absolute symbol. It represents a value instead | |
| 7727 | of an address. */ | |
| c691de6a | 7728 | && (bfd_is_abs_symbol (&h->root) |
| 279b2f94 RL |
7729 | /* This is an undefined symbol. */ |
| 7730 | || h->root.type == bfd_link_hash_undefined)) | |
| 7731 | break; | |
| 7732 | ||
| 7733 | /* For local symbols, defined global symbols in a non-ABS section, | |
| 7734 | it is assumed that the value is an address. */ | |
| 79e74192 RL |
7735 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; |
| 7736 | _bfd_error_handler | |
| 7737 | /* xgettext:c-format */ | |
| 871b3ab2 | 7738 | (_("%pB: relocation %s against `%s' can not be used when making " |
| 79e74192 RL |
7739 | "a shared object"), |
| 7740 | abfd, elfNN_aarch64_howto_table[howto_index].name, | |
| 7741 | (h) ? h->root.root.string : "a local symbol"); | |
| 7742 | bfd_set_error (bfd_error_bad_value); | |
| 0a1b45a2 | 7743 | return false; |
| 79e74192 RL |
7744 | } |
| 7745 | else | |
| 7746 | break; | |
| 7747 | ||
| 6353d82b JW |
7748 | case BFD_RELOC_AARCH64_MOVW_G0_NC: |
| 7749 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
| 7750 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
| 7751 | case BFD_RELOC_AARCH64_MOVW_G3: | |
| 7752 | if (bfd_link_pic (info)) | |
| 7753 | { | |
| 7754 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
| 7755 | _bfd_error_handler | |
| 7756 | /* xgettext:c-format */ | |
| 871b3ab2 | 7757 | (_("%pB: relocation %s against `%s' can not be used when making " |
| 6353d82b JW |
7758 | "a shared object; recompile with -fPIC"), |
| 7759 | abfd, elfNN_aarch64_howto_table[howto_index].name, | |
| 7760 | (h) ? h->root.root.string : "a local symbol"); | |
| 7761 | bfd_set_error (bfd_error_bad_value); | |
| 0a1b45a2 | 7762 | return false; |
| 6353d82b JW |
7763 | } |
| 7764 | /* Fall through. */ | |
| 7765 | ||
| 7766 | case BFD_RELOC_AARCH64_16_PCREL: | |
| 7767 | case BFD_RELOC_AARCH64_32_PCREL: | |
| 7768 | case BFD_RELOC_AARCH64_64_PCREL: | |
| 7769 | case BFD_RELOC_AARCH64_ADD_LO12: | |
| 7770 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: | |
| 7771 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
| 7772 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
| 7773 | case BFD_RELOC_AARCH64_LDST128_LO12: | |
| 7774 | case BFD_RELOC_AARCH64_LDST16_LO12: | |
| 7775 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
| 7776 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
| 7777 | case BFD_RELOC_AARCH64_LDST8_LO12: | |
| 7778 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
| 7779 | if (h == NULL || bfd_link_pic (info)) | |
| 7780 | break; | |
| 7781 | /* Fall through. */ | |
| 7782 | ||
| a6bb11b2 | 7783 | case BFD_RELOC_AARCH64_NN: |
| a06ea964 NC |
7784 | |
| 7785 | /* We don't need to handle relocs into sections not going into | |
| 7786 | the "real" output. */ | |
| 7787 | if ((sec->flags & SEC_ALLOC) == 0) | |
| 7788 | break; | |
| 7789 | ||
| 7790 | if (h != NULL) | |
| 7791 | { | |
| 0e1862bb | 7792 | if (!bfd_link_pic (info)) |
| a06ea964 NC |
7793 | h->non_got_ref = 1; |
| 7794 | ||
| 7795 | h->plt.refcount += 1; | |
| 7796 | h->pointer_equality_needed = 1; | |
| 7797 | } | |
| 7798 | ||
| 7799 | /* No need to do anything if we're not creating a shared | |
| 7800 | object. */ | |
| 6353d82b JW |
7801 | if (!(bfd_link_pic (info) |
| 7802 | /* If on the other hand, we are creating an executable, we | |
| 7803 | may need to keep relocations for symbols satisfied by a | |
| 7804 | dynamic library if we manage to avoid copy relocs for the | |
| 7805 | symbol. | |
| 7806 | ||
| 7807 | NOTE: Currently, there is no support of copy relocs | |
| 7808 | elimination on pc-relative relocation types, because there is | |
| 7809 | no dynamic relocation support for them in glibc. We still | |
| 7810 | record the dynamic symbol reference for them. This is | |
| 7811 | because one symbol may be referenced by both absolute | |
| 7812 | relocation (for example, BFD_RELOC_AARCH64_NN) and | |
| 7813 | pc-relative relocation. We need full symbol reference | |
| 7814 | information to make correct decision later in | |
| 7815 | elfNN_aarch64_adjust_dynamic_symbol. */ | |
| 7816 | || (ELIMINATE_COPY_RELOCS | |
| 7817 | && !bfd_link_pic (info) | |
| 7818 | && h != NULL | |
| 7819 | && (h->root.type == bfd_link_hash_defweak | |
| 7820 | || !h->def_regular)))) | |
| a06ea964 NC |
7821 | break; |
| 7822 | ||
| 7823 | { | |
| 7824 | struct elf_dyn_relocs *p; | |
| 7825 | struct elf_dyn_relocs **head; | |
| 6353d82b | 7826 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; |
| a06ea964 NC |
7827 | |
| 7828 | /* We must copy these reloc types into the output file. | |
| 7829 | Create a reloc section in dynobj and make room for | |
| 7830 | this reloc. */ | |
| 7831 | if (sreloc == NULL) | |
| 7832 | { | |
| 7833 | if (htab->root.dynobj == NULL) | |
| 7834 | htab->root.dynobj = abfd; | |
| 7835 | ||
| 7836 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
| 0a1b45a2 | 7837 | (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ true); |
| a06ea964 NC |
7838 | |
| 7839 | if (sreloc == NULL) | |
| 0a1b45a2 | 7840 | return false; |
| a06ea964 NC |
7841 | } |
| 7842 | ||
| 7843 | /* If this is a global symbol, we count the number of | |
| 7844 | relocations we need for this symbol. */ | |
| 7845 | if (h != NULL) | |
| 7846 | { | |
| 190eb1dd | 7847 | head = &h->dyn_relocs; |
| a06ea964 NC |
7848 | } |
| 7849 | else | |
| 7850 | { | |
| 7851 | /* Track dynamic relocs needed for local syms too. | |
| 7852 | We really need local syms available to do this | |
| 7853 | easily. Oh well. */ | |
| 7854 | ||
| 7855 | asection *s; | |
| 7856 | void **vpp; | |
| a06ea964 | 7857 | |
| f1dfbfdb | 7858 | isym = bfd_sym_from_r_symndx (&htab->root.sym_cache, |
| a06ea964 NC |
7859 | abfd, r_symndx); |
| 7860 | if (isym == NULL) | |
| 0a1b45a2 | 7861 | return false; |
| a06ea964 NC |
7862 | |
| 7863 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
| 7864 | if (s == NULL) | |
| 7865 | s = sec; | |
| 7866 | ||
| 7867 | /* Beware of type punned pointers vs strict aliasing | |
| 7868 | rules. */ | |
| 7869 | vpp = &(elf_section_data (s)->local_dynrel); | |
| 7870 | head = (struct elf_dyn_relocs **) vpp; | |
| 7871 | } | |
| 7872 | ||
| 7873 | p = *head; | |
| 7874 | if (p == NULL || p->sec != sec) | |
| 7875 | { | |
| 986f0783 | 7876 | size_t amt = sizeof *p; |
| a06ea964 NC |
7877 | p = ((struct elf_dyn_relocs *) |
| 7878 | bfd_zalloc (htab->root.dynobj, amt)); | |
| 7879 | if (p == NULL) | |
| 0a1b45a2 | 7880 | return false; |
| a06ea964 NC |
7881 | p->next = *head; |
| 7882 | *head = p; | |
| 7883 | p->sec = sec; | |
| 7884 | } | |
| 7885 | ||
| 7886 | p->count += 1; | |
| 7887 | ||
| 6353d82b JW |
7888 | if (elfNN_aarch64_howto_table[howto_index].pc_relative) |
| 7889 | p->pc_count += 1; | |
| a06ea964 NC |
7890 | } |
| 7891 | break; | |
| 7892 | ||
| 7893 | /* RR: We probably want to keep a consistency check that | |
| 7894 | there are no dangling GOT_PAGE relocs. */ | |
| a6bb11b2 | 7895 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
| 7bcccb57 | 7896 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
| 7018c030 | 7897 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
| 7bcccb57 | 7898 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
| a2e1db00 | 7899 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
| 99ad26cb | 7900 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
| 7bcccb57 | 7901 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
| dc8008f5 | 7902 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
| 74a1bfe1 | 7903 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
| f955cccf | 7904 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
| 7bcccb57 | 7905 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
| 389b8029 | 7906 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
| 7bcccb57 | 7907 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
| f955cccf | 7908 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
| 1ada945d | 7909 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
| 0484b454 RL |
7910 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
| 7911 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
| a6bb11b2 | 7912 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
| 7bcccb57 | 7913 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
| 3c12b054 | 7914 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
| 7ba7cfe4 | 7915 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
| 94facae3 | 7916 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
| a6bb11b2 | 7917 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
| a6bb11b2 | 7918 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
| 7bcccb57 | 7919 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
| 043bf05a | 7920 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
| 3b957e5b RL |
7921 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
| 7922 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
| 73f925cc | 7923 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
| f69e4920 | 7924 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
| 77a69ff8 | 7925 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
| a06ea964 NC |
7926 | { |
| 7927 | unsigned got_type; | |
| 7928 | unsigned old_got_type; | |
| 7929 | ||
| a6bb11b2 | 7930 | got_type = aarch64_reloc_got_type (bfd_r_type); |
| a06ea964 NC |
7931 | |
| 7932 | if (h) | |
| 7933 | { | |
| 7934 | h->got.refcount += 1; | |
| cec5225b | 7935 | old_got_type = elf_aarch64_hash_entry (h)->got_type; |
| a06ea964 NC |
7936 | } |
| 7937 | else | |
| 7938 | { | |
| 7939 | struct elf_aarch64_local_symbol *locals; | |
| 7940 | ||
| cec5225b | 7941 | if (!elfNN_aarch64_allocate_local_symbols |
| a06ea964 | 7942 | (abfd, symtab_hdr->sh_info)) |
| 0a1b45a2 | 7943 | return false; |
| a06ea964 | 7944 | |
| cec5225b | 7945 | locals = elf_aarch64_locals (abfd); |
| a06ea964 NC |
7946 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
| 7947 | locals[r_symndx].got_refcount += 1; | |
| 7948 | old_got_type = locals[r_symndx].got_type; | |
| 7949 | } | |
| 7950 | ||
| 7951 | /* If a variable is accessed with both general dynamic TLS | |
| 7952 | methods, two slots may be created. */ | |
| 7953 | if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type)) | |
| 7954 | got_type |= old_got_type; | |
| 7955 | ||
| 7956 | /* We will already have issued an error message if there | |
| 7957 | is a TLS/non-TLS mismatch, based on the symbol type. | |
| 7958 | So just combine any TLS types needed. */ | |
| 7959 | if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL | |
| 7960 | && got_type != GOT_NORMAL) | |
| 7961 | got_type |= old_got_type; | |
| 7962 | ||
| 7963 | /* If the symbol is accessed by both IE and GD methods, we | |
| 7964 | are able to relax. Turn off the GD flag, without | |
| 7965 | messing up with any other kind of TLS types that may be | |
| 7966 | involved. */ | |
| 7967 | if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type)) | |
| 7968 | got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD); | |
| 7969 | ||
| 7970 | if (old_got_type != got_type) | |
| 7971 | { | |
| 7972 | if (h != NULL) | |
| cec5225b | 7973 | elf_aarch64_hash_entry (h)->got_type = got_type; |
| a06ea964 NC |
7974 | else |
| 7975 | { | |
| 7976 | struct elf_aarch64_local_symbol *locals; | |
| cec5225b | 7977 | locals = elf_aarch64_locals (abfd); |
| a06ea964 NC |
7978 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
| 7979 | locals[r_symndx].got_type = got_type; | |
| 7980 | } | |
| 7981 | } | |
| 7982 | ||
| cc0efaa8 MS |
7983 | if (htab->root.dynobj == NULL) |
| 7984 | htab->root.dynobj = abfd; | |
| 7985 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
| 0a1b45a2 | 7986 | return false; |
| a06ea964 NC |
7987 | break; |
| 7988 | } | |
| 7989 | ||
| a6bb11b2 YZ |
7990 | case BFD_RELOC_AARCH64_CALL26: |
| 7991 | case BFD_RELOC_AARCH64_JUMP26: | |
| a06ea964 NC |
7992 | /* If this is a local symbol then we resolve it |
| 7993 | directly without creating a PLT entry. */ | |
| 7994 | if (h == NULL) | |
| 7995 | continue; | |
| 7996 | ||
| 7997 | h->needs_plt = 1; | |
| 1419bbe5 WN |
7998 | if (h->plt.refcount <= 0) |
| 7999 | h->plt.refcount = 1; | |
| 8000 | else | |
| 8001 | h->plt.refcount += 1; | |
| a06ea964 | 8002 | break; |
| a6bb11b2 YZ |
8003 | |
| 8004 | default: | |
| 8005 | break; | |
| a06ea964 NC |
8006 | } |
| 8007 | } | |
| a6bb11b2 | 8008 | |
| 0a1b45a2 | 8009 | return true; |
| a06ea964 NC |
8010 | } |
| 8011 | ||
| 8012 | /* Treat mapping symbols as special target symbols. */ | |
| 8013 | ||
| 0a1b45a2 | 8014 | static bool |
| cec5225b | 8015 | elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
| a06ea964 NC |
8016 | asymbol *sym) |
| 8017 | { | |
| 8018 | return bfd_is_aarch64_special_symbol_name (sym->name, | |
| 8019 | BFD_AARCH64_SPECIAL_SYM_TYPE_ANY); | |
| 8020 | } | |
| 8021 | ||
| e7679060 AM |
8022 | /* If the ELF symbol SYM might be a function in SEC, return the |
| 8023 | function size and set *CODE_OFF to the function's entry point, | |
| 8024 | otherwise return zero. */ | |
| a06ea964 | 8025 | |
| e7679060 AM |
8026 | static bfd_size_type |
| 8027 | elfNN_aarch64_maybe_function_sym (const asymbol *sym, asection *sec, | |
| 8028 | bfd_vma *code_off) | |
| 8029 | { | |
| 8030 | bfd_size_type size; | |
| 24aebc79 | 8031 | elf_symbol_type * elf_sym = (elf_symbol_type *) sym; |
| a06ea964 | 8032 | |
| e7679060 AM |
8033 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT |
| 8034 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0 | |
| 8035 | || sym->section != sec) | |
| 8036 | return 0; | |
| a06ea964 | 8037 | |
| 24aebc79 NC |
8038 | size = (sym->flags & BSF_SYNTHETIC) ? 0 : elf_sym->internal_elf_sym.st_size; |
| 8039 | ||
| e7679060 | 8040 | if (!(sym->flags & BSF_SYNTHETIC)) |
| 24aebc79 | 8041 | switch (ELF_ST_TYPE (elf_sym->internal_elf_sym.st_info)) |
| e7679060 | 8042 | { |
| a06ea964 | 8043 | case STT_NOTYPE: |
| 24aebc79 NC |
8044 | /* Ignore symbols created by the annobin plugin for gcc and clang. |
| 8045 | These symbols are hidden, local, notype and have a size of 0. */ | |
| 8046 | if (size == 0 | |
| 8047 | && sym->flags & BSF_LOCAL | |
| 8048 | && ELF_ST_VISIBILITY (elf_sym->internal_elf_sym.st_other) == STV_HIDDEN) | |
| 8049 | return 0; | |
| 8050 | /* Fall through. */ | |
| 8051 | case STT_FUNC: | |
| 8052 | /* FIXME: Allow STT_GNU_IFUNC as well ? */ | |
| a06ea964 | 8053 | break; |
| e7679060 AM |
8054 | default: |
| 8055 | return 0; | |
| 8056 | } | |
| 24aebc79 | 8057 | |
| e7679060 AM |
8058 | if ((sym->flags & BSF_LOCAL) |
| 8059 | && bfd_is_aarch64_special_symbol_name (sym->name, | |
| 8060 | BFD_AARCH64_SPECIAL_SYM_TYPE_ANY)) | |
| 8061 | return 0; | |
| a06ea964 | 8062 | |
| e7679060 | 8063 | *code_off = sym->value; |
| 24aebc79 NC |
8064 | |
| 8065 | /* Do not return 0 for the function's size. */ | |
| 8066 | return size ? size : 1; | |
| a06ea964 NC |
8067 | } |
| 8068 | ||
| 0a1b45a2 | 8069 | static bool |
| cec5225b | 8070 | elfNN_aarch64_find_inliner_info (bfd *abfd, |
| a06ea964 NC |
8071 | const char **filename_ptr, |
| 8072 | const char **functionname_ptr, | |
| 8073 | unsigned int *line_ptr) | |
| 8074 | { | |
| 0a1b45a2 | 8075 | bool found; |
| a06ea964 NC |
8076 | found = _bfd_dwarf2_find_inliner_info |
| 8077 | (abfd, filename_ptr, | |
| 8078 | functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info); | |
| 8079 | return found; | |
| 8080 | } | |
| 8081 | ||
| 8082 | ||
| 0a1b45a2 | 8083 | static bool |
| ed7e9d0b | 8084 | elfNN_aarch64_init_file_header (bfd *abfd, struct bfd_link_info *link_info) |
| a06ea964 NC |
8085 | { |
| 8086 | Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */ | |
| 8087 | ||
| ed7e9d0b | 8088 | if (!_bfd_elf_init_file_header (abfd, link_info)) |
| 0a1b45a2 | 8089 | return false; |
| ed7e9d0b | 8090 | |
| a06ea964 | 8091 | i_ehdrp = elf_elfheader (abfd); |
| a06ea964 | 8092 | i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION; |
| 0a1b45a2 | 8093 | return true; |
| a06ea964 NC |
8094 | } |
| 8095 | ||
| 8096 | static enum elf_reloc_type_class | |
| cec5225b | 8097 | elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 7e612e98 AM |
8098 | const asection *rel_sec ATTRIBUTE_UNUSED, |
| 8099 | const Elf_Internal_Rela *rela) | |
| a06ea964 | 8100 | { |
| f2e6a843 SN |
8101 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); |
| 8102 | ||
| 8103 | if (htab->root.dynsym != NULL | |
| 8104 | && htab->root.dynsym->contents != NULL) | |
| 8105 | { | |
| 8106 | /* Check relocation against STT_GNU_IFUNC symbol if there are | |
| 8107 | dynamic symbols. */ | |
| 8108 | bfd *abfd = info->output_bfd; | |
| 8109 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
| 8110 | unsigned long r_symndx = ELFNN_R_SYM (rela->r_info); | |
| 8111 | if (r_symndx != STN_UNDEF) | |
| 8112 | { | |
| 8113 | Elf_Internal_Sym sym; | |
| 8114 | if (!bed->s->swap_symbol_in (abfd, | |
| 8115 | (htab->root.dynsym->contents | |
| 8116 | + r_symndx * bed->s->sizeof_sym), | |
| 8117 | 0, &sym)) | |
| 8118 | { | |
| 8119 | /* xgettext:c-format */ | |
| 871b3ab2 | 8120 | _bfd_error_handler (_("%pB symbol number %lu references" |
| f2e6a843 SN |
8121 | " nonexistent SHT_SYMTAB_SHNDX section"), |
| 8122 | abfd, r_symndx); | |
| 8123 | /* Ideally an error class should be returned here. */ | |
| 8124 | } | |
| 8125 | else if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC) | |
| 8126 | return reloc_class_ifunc; | |
| 8127 | } | |
| 8128 | } | |
| 8129 | ||
| cec5225b | 8130 | switch ((int) ELFNN_R_TYPE (rela->r_info)) |
| a06ea964 | 8131 | { |
| f2e6a843 SN |
8132 | case AARCH64_R (IRELATIVE): |
| 8133 | return reloc_class_ifunc; | |
| a6bb11b2 | 8134 | case AARCH64_R (RELATIVE): |
| a06ea964 | 8135 | return reloc_class_relative; |
| a6bb11b2 | 8136 | case AARCH64_R (JUMP_SLOT): |
| a06ea964 | 8137 | return reloc_class_plt; |
| a6bb11b2 | 8138 | case AARCH64_R (COPY): |
| a06ea964 NC |
8139 | return reloc_class_copy; |
| 8140 | default: | |
| 8141 | return reloc_class_normal; | |
| 8142 | } | |
| 8143 | } | |
| 8144 | ||
| a06ea964 NC |
8145 | /* Handle an AArch64 specific section when reading an object file. This is |
| 8146 | called when bfd_section_from_shdr finds a section with an unknown | |
| 8147 | type. */ | |
| 8148 | ||
| 0a1b45a2 | 8149 | static bool |
| cec5225b | 8150 | elfNN_aarch64_section_from_shdr (bfd *abfd, |
| a06ea964 NC |
8151 | Elf_Internal_Shdr *hdr, |
| 8152 | const char *name, int shindex) | |
| 8153 | { | |
| 8154 | /* There ought to be a place to keep ELF backend specific flags, but | |
| 8155 | at the moment there isn't one. We just keep track of the | |
| 8156 | sections by their name, instead. Fortunately, the ABI gives | |
| 8157 | names for all the AArch64 specific sections, so we will probably get | |
| 8158 | away with this. */ | |
| 8159 | switch (hdr->sh_type) | |
| 8160 | { | |
| 8161 | case SHT_AARCH64_ATTRIBUTES: | |
| 8162 | break; | |
| 8163 | ||
| 8164 | default: | |
| 0a1b45a2 | 8165 | return false; |
| a06ea964 NC |
8166 | } |
| 8167 | ||
| 8168 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
| 0a1b45a2 | 8169 | return false; |
| a06ea964 | 8170 | |
| 0a1b45a2 | 8171 | return true; |
| a06ea964 NC |
8172 | } |
| 8173 | ||
| d0ff5ca9 LM |
8174 | /* Process any AArch64-specific program segment types. */ |
| 8175 | ||
| 8176 | static bool | |
| 8177 | elfNN_aarch64_section_from_phdr (bfd *abfd ATTRIBUTE_UNUSED, | |
| 8178 | Elf_Internal_Phdr *hdr, | |
| 8179 | int hdr_index ATTRIBUTE_UNUSED, | |
| 8180 | const char *name ATTRIBUTE_UNUSED) | |
| 8181 | { | |
| 8182 | /* Right now we only handle the PT_AARCH64_MEMTAG_MTE segment type. */ | |
| 8183 | if (hdr == NULL || hdr->p_type != PT_AARCH64_MEMTAG_MTE) | |
| 8184 | return false; | |
| 8185 | ||
| 8186 | if (hdr->p_filesz > 0) | |
| 8187 | { | |
| 8188 | /* Sections created from memory tag p_type's are always named | |
| 8189 | "memtag". This makes it easier for tools (for example, GDB) | |
| 8190 | to find them. */ | |
| 8191 | asection *newsect = bfd_make_section_anyway (abfd, "memtag"); | |
| 8192 | ||
| 8193 | if (newsect == NULL) | |
| 8194 | return false; | |
| 8195 | ||
| 8196 | unsigned int opb = bfd_octets_per_byte (abfd, NULL); | |
| 8197 | ||
| 8198 | /* p_vaddr holds the original start address of the tagged memory | |
| 8199 | range. */ | |
| 8200 | newsect->vma = hdr->p_vaddr / opb; | |
| 8201 | ||
| 8202 | /* p_filesz holds the storage size of the packed tags. */ | |
| 8203 | newsect->size = hdr->p_filesz; | |
| 8204 | newsect->filepos = hdr->p_offset; | |
| 8205 | ||
| 8206 | /* p_memsz holds the size of the memory range that contains tags. The | |
| 8207 | section's rawsize field is reused for this purpose. */ | |
| 8208 | newsect->rawsize = hdr->p_memsz; | |
| 8209 | ||
| 8210 | /* Make sure the section's flags has SEC_HAS_CONTENTS set, otherwise | |
| 8211 | BFD will return all zeroes when attempting to get contents from this | |
| 8212 | section. */ | |
| 8213 | newsect->flags |= SEC_HAS_CONTENTS; | |
| 8214 | } | |
| 8215 | ||
| 8216 | return true; | |
| 8217 | } | |
| 8218 | ||
| 8219 | /* Implements the bfd_elf_modify_headers hook for aarch64. */ | |
| 8220 | ||
| 8221 | static bool | |
| 8222 | elfNN_aarch64_modify_headers (bfd *abfd, | |
| 8223 | struct bfd_link_info *info) | |
| 8224 | { | |
| 8225 | struct elf_segment_map *m; | |
| 8226 | unsigned int segment_count = 0; | |
| 8227 | Elf_Internal_Phdr *p; | |
| 8228 | ||
| 8229 | for (m = elf_seg_map (abfd); m != NULL; m = m->next, segment_count++) | |
| 8230 | { | |
| 8231 | /* We are only interested in the memory tag segment that will be dumped | |
| 8232 | to a core file. If we have no memory tags or this isn't a core file we | |
| 8233 | are dealing with, just skip this segment. */ | |
| 8234 | if (m->p_type != PT_AARCH64_MEMTAG_MTE | |
| 8235 | || bfd_get_format (abfd) != bfd_core) | |
| 8236 | continue; | |
| 8237 | ||
| 8238 | /* For memory tag segments in core files, the size of the file contents | |
| 8239 | is smaller than the size of the memory range. Adjust the memory size | |
| 8240 | accordingly. The real memory size is held in the section's rawsize | |
| 8241 | field. */ | |
| 8242 | if (m->count > 0) | |
| 8243 | { | |
| 8244 | p = elf_tdata (abfd)->phdr; | |
| 8245 | p += m->idx; | |
| 8246 | p->p_memsz = m->sections[0]->rawsize; | |
| 8247 | p->p_flags = 0; | |
| 8248 | p->p_paddr = 0; | |
| 8249 | p->p_align = 0; | |
| 8250 | } | |
| 8251 | } | |
| 8252 | ||
| 8253 | /* Give the generic code a chance to handle the headers. */ | |
| 8254 | return _bfd_elf_modify_headers (abfd, info); | |
| 8255 | } | |
| 8256 | ||
| a06ea964 NC |
8257 | /* A structure used to record a list of sections, independently |
| 8258 | of the next and prev fields in the asection structure. */ | |
| 8259 | typedef struct section_list | |
| 8260 | { | |
| 8261 | asection *sec; | |
| 8262 | struct section_list *next; | |
| 8263 | struct section_list *prev; | |
| 8264 | } | |
| 8265 | section_list; | |
| 8266 | ||
| 8267 | /* Unfortunately we need to keep a list of sections for which | |
| 8268 | an _aarch64_elf_section_data structure has been allocated. This | |
| cec5225b | 8269 | is because it is possible for functions like elfNN_aarch64_write_section |
| a06ea964 NC |
8270 | to be called on a section which has had an elf_data_structure |
| 8271 | allocated for it (and so the used_by_bfd field is valid) but | |
| 8272 | for which the AArch64 extended version of this structure - the | |
| 8273 | _aarch64_elf_section_data structure - has not been allocated. */ | |
| 8274 | static section_list *sections_with_aarch64_elf_section_data = NULL; | |
| 8275 | ||
| 8276 | static void | |
| 8277 | record_section_with_aarch64_elf_section_data (asection *sec) | |
| 8278 | { | |
| 8279 | struct section_list *entry; | |
| 8280 | ||
| 8281 | entry = bfd_malloc (sizeof (*entry)); | |
| 8282 | if (entry == NULL) | |
| 8283 | return; | |
| 8284 | entry->sec = sec; | |
| 8285 | entry->next = sections_with_aarch64_elf_section_data; | |
| 8286 | entry->prev = NULL; | |
| 8287 | if (entry->next != NULL) | |
| 8288 | entry->next->prev = entry; | |
| 8289 | sections_with_aarch64_elf_section_data = entry; | |
| 8290 | } | |
| 8291 | ||
| 8292 | static struct section_list * | |
| 8293 | find_aarch64_elf_section_entry (asection *sec) | |
| 8294 | { | |
| 8295 | struct section_list *entry; | |
| 8296 | static struct section_list *last_entry = NULL; | |
| 8297 | ||
| 8298 | /* This is a short cut for the typical case where the sections are added | |
| 8299 | to the sections_with_aarch64_elf_section_data list in forward order and | |
| 8300 | then looked up here in backwards order. This makes a real difference | |
| 8301 | to the ld-srec/sec64k.exp linker test. */ | |
| 8302 | entry = sections_with_aarch64_elf_section_data; | |
| 8303 | if (last_entry != NULL) | |
| 8304 | { | |
| 8305 | if (last_entry->sec == sec) | |
| 8306 | entry = last_entry; | |
| 8307 | else if (last_entry->next != NULL && last_entry->next->sec == sec) | |
| 8308 | entry = last_entry->next; | |
| 8309 | } | |
| 8310 | ||
| 8311 | for (; entry; entry = entry->next) | |
| 8312 | if (entry->sec == sec) | |
| 8313 | break; | |
| 8314 | ||
| 8315 | if (entry) | |
| 8316 | /* Record the entry prior to this one - it is the entry we are | |
| 8317 | most likely to want to locate next time. Also this way if we | |
| 8318 | have been called from | |
| 8319 | unrecord_section_with_aarch64_elf_section_data () we will not | |
| 8320 | be caching a pointer that is about to be freed. */ | |
| 8321 | last_entry = entry->prev; | |
| 8322 | ||
| 8323 | return entry; | |
| 8324 | } | |
| 8325 | ||
| 8326 | static void | |
| 8327 | unrecord_section_with_aarch64_elf_section_data (asection *sec) | |
| 8328 | { | |
| 8329 | struct section_list *entry; | |
| 8330 | ||
| 8331 | entry = find_aarch64_elf_section_entry (sec); | |
| 8332 | ||
| 8333 | if (entry) | |
| 8334 | { | |
| 8335 | if (entry->prev != NULL) | |
| 8336 | entry->prev->next = entry->next; | |
| 8337 | if (entry->next != NULL) | |
| 8338 | entry->next->prev = entry->prev; | |
| 8339 | if (entry == sections_with_aarch64_elf_section_data) | |
| 8340 | sections_with_aarch64_elf_section_data = entry->next; | |
| 8341 | free (entry); | |
| 8342 | } | |
| 8343 | } | |
| 8344 | ||
| 8345 | ||
| 8346 | typedef struct | |
| 8347 | { | |
| 8348 | void *finfo; | |
| 8349 | struct bfd_link_info *info; | |
| 8350 | asection *sec; | |
| 8351 | int sec_shndx; | |
| 8352 | int (*func) (void *, const char *, Elf_Internal_Sym *, | |
| 8353 | asection *, struct elf_link_hash_entry *); | |
| 8354 | } output_arch_syminfo; | |
| 8355 | ||
| 8356 | enum map_symbol_type | |
| 8357 | { | |
| 8358 | AARCH64_MAP_INSN, | |
| 8359 | AARCH64_MAP_DATA | |
| 8360 | }; | |
| 8361 | ||
| 8362 | ||
| 8363 | /* Output a single mapping symbol. */ | |
| 8364 | ||
| 0a1b45a2 | 8365 | static bool |
| cec5225b | 8366 | elfNN_aarch64_output_map_sym (output_arch_syminfo *osi, |
| a06ea964 NC |
8367 | enum map_symbol_type type, bfd_vma offset) |
| 8368 | { | |
| 8369 | static const char *names[2] = { "$x", "$d" }; | |
| 8370 | Elf_Internal_Sym sym; | |
| 8371 | ||
| 8372 | sym.st_value = (osi->sec->output_section->vma | |
| 8373 | + osi->sec->output_offset + offset); | |
| 8374 | sym.st_size = 0; | |
| 8375 | sym.st_other = 0; | |
| 8376 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
| 8377 | sym.st_shndx = osi->sec_shndx; | |
| 8378 | return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1; | |
| 8379 | } | |
| 8380 | ||
| a06ea964 NC |
8381 | /* Output a single local symbol for a generated stub. */ |
| 8382 | ||
| 0a1b45a2 | 8383 | static bool |
| cec5225b | 8384 | elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name, |
| a06ea964 NC |
8385 | bfd_vma offset, bfd_vma size) |
| 8386 | { | |
| 8387 | Elf_Internal_Sym sym; | |
| 8388 | ||
| 8389 | sym.st_value = (osi->sec->output_section->vma | |
| 8390 | + osi->sec->output_offset + offset); | |
| 8391 | sym.st_size = size; | |
| 8392 | sym.st_other = 0; | |
| 8393 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
| 8394 | sym.st_shndx = osi->sec_shndx; | |
| 8395 | return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1; | |
| 8396 | } | |
| 8397 | ||
| 0a1b45a2 | 8398 | static bool |
| a06ea964 NC |
8399 | aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
| 8400 | { | |
| cec5225b | 8401 | struct elf_aarch64_stub_hash_entry *stub_entry; |
| a06ea964 NC |
8402 | asection *stub_sec; |
| 8403 | bfd_vma addr; | |
| 8404 | char *stub_name; | |
| 8405 | output_arch_syminfo *osi; | |
| 8406 | ||
| 8407 | /* Massage our args to the form they really have. */ | |
| cec5225b | 8408 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
| a06ea964 NC |
8409 | osi = (output_arch_syminfo *) in_arg; |
| 8410 | ||
| 8411 | stub_sec = stub_entry->stub_sec; | |
| 8412 | ||
| 8413 | /* Ensure this stub is attached to the current section being | |
| 8414 | processed. */ | |
| 8415 | if (stub_sec != osi->sec) | |
| 0a1b45a2 | 8416 | return true; |
| a06ea964 NC |
8417 | |
| 8418 | addr = (bfd_vma) stub_entry->stub_offset; | |
| 8419 | ||
| 8420 | stub_name = stub_entry->output_name; | |
| 8421 | ||
| 8422 | switch (stub_entry->stub_type) | |
| 8423 | { | |
| 8424 | case aarch64_stub_adrp_branch: | |
| cec5225b | 8425 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, |
| a06ea964 | 8426 | sizeof (aarch64_adrp_branch_stub))) |
| 0a1b45a2 | 8427 | return false; |
| cec5225b | 8428 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
| 0a1b45a2 | 8429 | return false; |
| a06ea964 NC |
8430 | break; |
| 8431 | case aarch64_stub_long_branch: | |
| cec5225b | 8432 | if (!elfNN_aarch64_output_stub_sym |
| a06ea964 | 8433 | (osi, stub_name, addr, sizeof (aarch64_long_branch_stub))) |
| 0a1b45a2 | 8434 | return false; |
| cec5225b | 8435 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
| 0a1b45a2 | 8436 | return false; |
| cec5225b | 8437 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16)) |
| 0a1b45a2 | 8438 | return false; |
| a06ea964 | 8439 | break; |
| 68fcca92 JW |
8440 | case aarch64_stub_erratum_835769_veneer: |
| 8441 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
| 8442 | sizeof (aarch64_erratum_835769_stub))) | |
| 0a1b45a2 | 8443 | return false; |
| 68fcca92 | 8444 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
| 0a1b45a2 | 8445 | return false; |
| 68fcca92 | 8446 | break; |
| 4106101c MS |
8447 | case aarch64_stub_erratum_843419_veneer: |
| 8448 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
| 8449 | sizeof (aarch64_erratum_843419_stub))) | |
| 0a1b45a2 | 8450 | return false; |
| 4106101c | 8451 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
| 0a1b45a2 | 8452 | return false; |
| 4106101c | 8453 | break; |
| 9fca35fc TC |
8454 | case aarch64_stub_none: |
| 8455 | break; | |
| 4106101c | 8456 | |
| a06ea964 | 8457 | default: |
| 8e2fe09f | 8458 | abort (); |
| a06ea964 NC |
8459 | } |
| 8460 | ||
| 0a1b45a2 | 8461 | return true; |
| a06ea964 NC |
8462 | } |
| 8463 | ||
| 8464 | /* Output mapping symbols for linker generated sections. */ | |
| 8465 | ||
| 0a1b45a2 | 8466 | static bool |
| cec5225b | 8467 | elfNN_aarch64_output_arch_local_syms (bfd *output_bfd, |
| a06ea964 NC |
8468 | struct bfd_link_info *info, |
| 8469 | void *finfo, | |
| 8470 | int (*func) (void *, const char *, | |
| 8471 | Elf_Internal_Sym *, | |
| 8472 | asection *, | |
| 8473 | struct elf_link_hash_entry | |
| 8474 | *)) | |
| 8475 | { | |
| 8476 | output_arch_syminfo osi; | |
| cec5225b | 8477 | struct elf_aarch64_link_hash_table *htab; |
| a06ea964 | 8478 | |
| 25d17459 L |
8479 | if (info->strip == strip_all |
| 8480 | && !info->emitrelocations | |
| 8481 | && !bfd_link_relocatable (info)) | |
| 8482 | return true; | |
| 8483 | ||
| cec5225b | 8484 | htab = elf_aarch64_hash_table (info); |
| a06ea964 NC |
8485 | |
| 8486 | osi.finfo = finfo; | |
| 8487 | osi.info = info; | |
| 8488 | osi.func = func; | |
| 8489 | ||
| 8490 | /* Long calls stubs. */ | |
| 8491 | if (htab->stub_bfd && htab->stub_bfd->sections) | |
| 8492 | { | |
| 8493 | asection *stub_sec; | |
| 8494 | ||
| 8495 | for (stub_sec = htab->stub_bfd->sections; | |
| 8496 | stub_sec != NULL; stub_sec = stub_sec->next) | |
| 8497 | { | |
| 8498 | /* Ignore non-stub sections. */ | |
| 8499 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
| 8500 | continue; | |
| 8501 | ||
| 8502 | osi.sec = stub_sec; | |
| 8503 | ||
| 8504 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
| 8505 | (output_bfd, osi.sec->output_section); | |
| 8506 | ||
| 61865519 MS |
8507 | /* The first instruction in a stub is always a branch. */ |
| 8508 | if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0)) | |
| 0a1b45a2 | 8509 | return false; |
| 61865519 | 8510 | |
| a06ea964 NC |
8511 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub, |
| 8512 | &osi); | |
| 8513 | } | |
| 8514 | } | |
| 8515 | ||
| 8516 | /* Finally, output mapping symbols for the PLT. */ | |
| 8517 | if (!htab->root.splt || htab->root.splt->size == 0) | |
| 0a1b45a2 | 8518 | return true; |
| a06ea964 | 8519 | |
| a06ea964 NC |
8520 | osi.sec_shndx = _bfd_elf_section_from_bfd_section |
| 8521 | (output_bfd, htab->root.splt->output_section); | |
| 8522 | osi.sec = htab->root.splt; | |
| 8523 | ||
| 73524045 | 8524 | elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0); |
| a06ea964 | 8525 | |
| 0a1b45a2 | 8526 | return true; |
| a06ea964 NC |
8527 | |
| 8528 | } | |
| 8529 | ||
| 8530 | /* Allocate target specific section data. */ | |
| 8531 | ||
| 0a1b45a2 | 8532 | static bool |
| cec5225b | 8533 | elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec) |
| a06ea964 NC |
8534 | { |
| 8535 | if (!sec->used_by_bfd) | |
| 8536 | { | |
| 8537 | _aarch64_elf_section_data *sdata; | |
| 986f0783 | 8538 | size_t amt = sizeof (*sdata); |
| a06ea964 NC |
8539 | |
| 8540 | sdata = bfd_zalloc (abfd, amt); | |
| 8541 | if (sdata == NULL) | |
| 0a1b45a2 | 8542 | return false; |
| a06ea964 NC |
8543 | sec->used_by_bfd = sdata; |
| 8544 | } | |
| 8545 | ||
| 8546 | record_section_with_aarch64_elf_section_data (sec); | |
| 8547 | ||
| 8548 | return _bfd_elf_new_section_hook (abfd, sec); | |
| 8549 | } | |
| 8550 | ||
| 8551 | ||
| 8552 | static void | |
| 8553 | unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
| 8554 | asection *sec, | |
| 8555 | void *ignore ATTRIBUTE_UNUSED) | |
| 8556 | { | |
| 8557 | unrecord_section_with_aarch64_elf_section_data (sec); | |
| 8558 | } | |
| 8559 | ||
| 0a1b45a2 | 8560 | static bool |
| cec5225b | 8561 | elfNN_aarch64_close_and_cleanup (bfd *abfd) |
| a06ea964 NC |
8562 | { |
| 8563 | if (abfd->sections) | |
| 8564 | bfd_map_over_sections (abfd, | |
| 8565 | unrecord_section_via_map_over_sections, NULL); | |
| 8566 | ||
| 8567 | return _bfd_elf_close_and_cleanup (abfd); | |
| 8568 | } | |
| 8569 | ||
| 0a1b45a2 | 8570 | static bool |
| cec5225b | 8571 | elfNN_aarch64_bfd_free_cached_info (bfd *abfd) |
| a06ea964 NC |
8572 | { |
| 8573 | if (abfd->sections) | |
| 8574 | bfd_map_over_sections (abfd, | |
| 8575 | unrecord_section_via_map_over_sections, NULL); | |
| 8576 | ||
| 8577 | return _bfd_free_cached_info (abfd); | |
| 8578 | } | |
| 8579 | ||
| a06ea964 NC |
8580 | /* Create dynamic sections. This is different from the ARM backend in that |
| 8581 | the got, plt, gotplt and their relocation sections are all created in the | |
| 8582 | standard part of the bfd elf backend. */ | |
| 8583 | ||
| 0a1b45a2 | 8584 | static bool |
| cec5225b | 8585 | elfNN_aarch64_create_dynamic_sections (bfd *dynobj, |
| a06ea964 NC |
8586 | struct bfd_link_info *info) |
| 8587 | { | |
| cc0efaa8 MS |
8588 | /* We need to create .got section. */ |
| 8589 | if (!aarch64_elf_create_got_section (dynobj, info)) | |
| 0a1b45a2 | 8590 | return false; |
| a06ea964 | 8591 | |
| 9d19e4fd | 8592 | return _bfd_elf_create_dynamic_sections (dynobj, info); |
| a06ea964 NC |
8593 | } |
| 8594 | ||
| 8595 | ||
| 8596 | /* Allocate space in .plt, .got and associated reloc sections for | |
| 8597 | dynamic relocs. */ | |
| 8598 | ||
| 0a1b45a2 | 8599 | static bool |
| cec5225b | 8600 | elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
| a06ea964 NC |
8601 | { |
| 8602 | struct bfd_link_info *info; | |
| cec5225b YZ |
8603 | struct elf_aarch64_link_hash_table *htab; |
| 8604 | struct elf_aarch64_link_hash_entry *eh; | |
| a06ea964 NC |
8605 | struct elf_dyn_relocs *p; |
| 8606 | ||
| 8607 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
| 8608 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
| 8609 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
| 8610 | ||
| 8611 | There is no need to process bfd_link_hash_indirect symbols here | |
| 8612 | because we will also be presented with the concrete instance of | |
| cec5225b | 8613 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been |
| a06ea964 | 8614 | called to copy all relevant data from the generic to the concrete |
| 2d0ca824 | 8615 | symbol instance. */ |
| a06ea964 | 8616 | if (h->root.type == bfd_link_hash_indirect) |
| 0a1b45a2 | 8617 | return true; |
| a06ea964 NC |
8618 | |
| 8619 | if (h->root.type == bfd_link_hash_warning) | |
| 8620 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
| 8621 | ||
| 8622 | info = (struct bfd_link_info *) inf; | |
| cec5225b | 8623 | htab = elf_aarch64_hash_table (info); |
| a06ea964 | 8624 | |
| 1419bbe5 WN |
8625 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
| 8626 | here if it is defined and referenced in a non-shared object. */ | |
| 8627 | if (h->type == STT_GNU_IFUNC | |
| 8628 | && h->def_regular) | |
| 0a1b45a2 | 8629 | return true; |
| 1419bbe5 | 8630 | else if (htab->root.dynamic_sections_created && h->plt.refcount > 0) |
| a06ea964 NC |
8631 | { |
| 8632 | /* Make sure this symbol is output as a dynamic symbol. | |
| 07d6d2b8 | 8633 | Undefined weak syms won't yet be marked as dynamic. */ |
| ff07562f JW |
8634 | if (h->dynindx == -1 && !h->forced_local |
| 8635 | && h->root.type == bfd_link_hash_undefweak) | |
| a06ea964 NC |
8636 | { |
| 8637 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
| 0a1b45a2 | 8638 | return false; |
| a06ea964 NC |
8639 | } |
| 8640 | ||
| 0e1862bb | 8641 | if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
| a06ea964 NC |
8642 | { |
| 8643 | asection *s = htab->root.splt; | |
| 8644 | ||
| 8645 | /* If this is the first .plt entry, make room for the special | |
| 8646 | first entry. */ | |
| 8647 | if (s->size == 0) | |
| 8648 | s->size += htab->plt_header_size; | |
| 8649 | ||
| 8650 | h->plt.offset = s->size; | |
| 8651 | ||
| 8652 | /* If this symbol is not defined in a regular file, and we are | |
| 8653 | not generating a shared library, then set the symbol to this | |
| 8654 | location in the .plt. This is required to make function | |
| 8655 | pointers compare as equal between the normal executable and | |
| 8656 | the shared library. */ | |
| 0e1862bb | 8657 | if (!bfd_link_pic (info) && !h->def_regular) |
| a06ea964 NC |
8658 | { |
| 8659 | h->root.u.def.section = s; | |
| 8660 | h->root.u.def.value = h->plt.offset; | |
| 8661 | } | |
| 8662 | ||
| 8663 | /* Make room for this entry. For now we only create the | |
| 8664 | small model PLT entries. We later need to find a way | |
| 8665 | of relaxing into these from the large model PLT entries. */ | |
| 37c18eed | 8666 | s->size += htab->plt_entry_size; |
| a06ea964 NC |
8667 | |
| 8668 | /* We also need to make an entry in the .got.plt section, which | |
| 8669 | will be placed in the .got section by the linker script. */ | |
| 8670 | htab->root.sgotplt->size += GOT_ENTRY_SIZE; | |
| 8671 | ||
| 8672 | /* We also need to make an entry in the .rela.plt section. */ | |
| 8673 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
| 8674 | ||
| 8675 | /* We need to ensure that all GOT entries that serve the PLT | |
| 8676 | are consecutive with the special GOT slots [0] [1] and | |
| 8677 | [2]. Any addtional relocations, such as | |
| 8678 | R_AARCH64_TLSDESC, must be placed after the PLT related | |
| 8679 | entries. We abuse the reloc_count such that during | |
| 8680 | sizing we adjust reloc_count to indicate the number of | |
| 8681 | PLT related reserved entries. In subsequent phases when | |
| 8682 | filling in the contents of the reloc entries, PLT related | |
| 8683 | entries are placed by computing their PLT index (0 | |
| 8684 | .. reloc_count). While other none PLT relocs are placed | |
| 8685 | at the slot indicated by reloc_count and reloc_count is | |
| 8686 | updated. */ | |
| 8687 | ||
| 8688 | htab->root.srelplt->reloc_count++; | |
| 823710d5 SN |
8689 | |
| 8690 | /* Mark the DSO in case R_<CLS>_JUMP_SLOT relocs against | |
| 8691 | variant PCS symbols are present. */ | |
| 8692 | if (h->other & STO_AARCH64_VARIANT_PCS) | |
| 8693 | htab->variant_pcs = 1; | |
| 8694 | ||
| a06ea964 NC |
8695 | } |
| 8696 | else | |
| 8697 | { | |
| 8698 | h->plt.offset = (bfd_vma) - 1; | |
| 8699 | h->needs_plt = 0; | |
| 8700 | } | |
| 8701 | } | |
| 8702 | else | |
| 8703 | { | |
| 8704 | h->plt.offset = (bfd_vma) - 1; | |
| 8705 | h->needs_plt = 0; | |
| 8706 | } | |
| 8707 | ||
| cec5225b | 8708 | eh = (struct elf_aarch64_link_hash_entry *) h; |
| a06ea964 NC |
8709 | eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; |
| 8710 | ||
| 8711 | if (h->got.refcount > 0) | |
| 8712 | { | |
| 0a1b45a2 | 8713 | bool dyn; |
| cec5225b | 8714 | unsigned got_type = elf_aarch64_hash_entry (h)->got_type; |
| a06ea964 NC |
8715 | |
| 8716 | h->got.offset = (bfd_vma) - 1; | |
| 8717 | ||
| 8718 | dyn = htab->root.dynamic_sections_created; | |
| 8719 | ||
| 8720 | /* Make sure this symbol is output as a dynamic symbol. | |
| 07d6d2b8 | 8721 | Undefined weak syms won't yet be marked as dynamic. */ |
| ff07562f JW |
8722 | if (dyn && h->dynindx == -1 && !h->forced_local |
| 8723 | && h->root.type == bfd_link_hash_undefweak) | |
| a06ea964 NC |
8724 | { |
| 8725 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
| 0a1b45a2 | 8726 | return false; |
| a06ea964 NC |
8727 | } |
| 8728 | ||
| 8729 | if (got_type == GOT_UNKNOWN) | |
| 8730 | { | |
| 8731 | } | |
| 8732 | else if (got_type == GOT_NORMAL) | |
| 8733 | { | |
| 8734 | h->got.offset = htab->root.sgot->size; | |
| 8735 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
| 8736 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
| 8737 | || h->root.type != bfd_link_hash_undefweak) | |
| 0e1862bb | 8738 | && (bfd_link_pic (info) |
| a377ae2a SN |
8739 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) |
| 8740 | /* Undefined weak symbol in static PIE resolves to 0 without | |
| 8741 | any dynamic relocations. */ | |
| 8742 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
| a06ea964 NC |
8743 | { |
| 8744 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
| 8745 | } | |
| 8746 | } | |
| 8747 | else | |
| 8748 | { | |
| 8749 | int indx; | |
| 8750 | if (got_type & GOT_TLSDESC_GD) | |
| 8751 | { | |
| 8752 | eh->tlsdesc_got_jump_table_offset = | |
| 8753 | (htab->root.sgotplt->size | |
| 8754 | - aarch64_compute_jump_table_size (htab)); | |
| 8755 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
| 8756 | h->got.offset = (bfd_vma) - 2; | |
| 8757 | } | |
| 8758 | ||
| 8759 | if (got_type & GOT_TLS_GD) | |
| 8760 | { | |
| 8761 | h->got.offset = htab->root.sgot->size; | |
| 8762 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
| 8763 | } | |
| 8764 | ||
| 8765 | if (got_type & GOT_TLS_IE) | |
| 8766 | { | |
| 8767 | h->got.offset = htab->root.sgot->size; | |
| 8768 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
| 8769 | } | |
| 8770 | ||
| 8771 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
| 8772 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
| 8773 | || h->root.type != bfd_link_hash_undefweak) | |
| 6dda7875 | 8774 | && (!bfd_link_executable (info) |
| a06ea964 NC |
8775 | || indx != 0 |
| 8776 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
| 8777 | { | |
| 8778 | if (got_type & GOT_TLSDESC_GD) | |
| 8779 | { | |
| 8780 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
| 8781 | /* Note reloc_count not incremented here! We have | |
| 8782 | already adjusted reloc_count for this relocation | |
| 8783 | type. */ | |
| 8784 | ||
| 8785 | /* TLSDESC PLT is now needed, but not yet determined. */ | |
| 9bcc30e4 | 8786 | htab->root.tlsdesc_plt = (bfd_vma) - 1; |
| a06ea964 NC |
8787 | } |
| 8788 | ||
| 8789 | if (got_type & GOT_TLS_GD) | |
| 8790 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
| 8791 | ||
| 8792 | if (got_type & GOT_TLS_IE) | |
| 8793 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
| 8794 | } | |
| 8795 | } | |
| 8796 | } | |
| 8797 | else | |
| 8798 | { | |
| 8799 | h->got.offset = (bfd_vma) - 1; | |
| 8800 | } | |
| 8801 | ||
| 190eb1dd | 8802 | if (h->dyn_relocs == NULL) |
| 0a1b45a2 | 8803 | return true; |
| a06ea964 | 8804 | |
| 90b7a5df FS |
8805 | for (p = h->dyn_relocs; p != NULL; p = p->next) |
| 8806 | if (eh->def_protected) | |
| 8807 | { | |
| 8808 | /* Disallow copy relocations against protected symbol. */ | |
| 8809 | asection *s = p->sec->output_section; | |
| 8810 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
| 8811 | { | |
| 8812 | info->callbacks->einfo | |
| 8813 | /* xgettext:c-format */ | |
| 8814 | (_ ("%F%P: %pB: copy relocation against non-copyable " | |
| 8815 | "protected symbol `%s'\n"), | |
| 8816 | p->sec->owner, h->root.root.string); | |
| 8817 | return false; | |
| 8818 | } | |
| 8819 | } | |
| 8820 | ||
| a06ea964 NC |
8821 | /* In the shared -Bsymbolic case, discard space allocated for |
| 8822 | dynamic pc-relative relocs against symbols which turn out to be | |
| 8823 | defined in regular objects. For the normal shared case, discard | |
| 8824 | space for pc-relative relocs that have become local due to symbol | |
| 8825 | visibility changes. */ | |
| 8826 | ||
| 0e1862bb | 8827 | if (bfd_link_pic (info)) |
| a06ea964 NC |
8828 | { |
| 8829 | /* Relocs that use pc_count are those that appear on a call | |
| 07d6d2b8 AM |
8830 | insn, or certain REL relocs that can generated via assembly. |
| 8831 | We want calls to protected symbols to resolve directly to the | |
| 8832 | function rather than going via the plt. If people want | |
| 8833 | function pointer comparisons to work as expected then they | |
| 8834 | should avoid writing weird assembly. */ | |
| a06ea964 NC |
8835 | if (SYMBOL_CALLS_LOCAL (info, h)) |
| 8836 | { | |
| 8837 | struct elf_dyn_relocs **pp; | |
| 8838 | ||
| 190eb1dd | 8839 | for (pp = &h->dyn_relocs; (p = *pp) != NULL;) |
| a06ea964 NC |
8840 | { |
| 8841 | p->count -= p->pc_count; | |
| 8842 | p->pc_count = 0; | |
| 8843 | if (p->count == 0) | |
| 8844 | *pp = p->next; | |
| 8845 | else | |
| 8846 | pp = &p->next; | |
| 8847 | } | |
| 8848 | } | |
| 8849 | ||
| 8850 | /* Also discard relocs on undefined weak syms with non-default | |
| 07d6d2b8 | 8851 | visibility. */ |
| 190eb1dd | 8852 | if (h->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak) |
| a06ea964 | 8853 | { |
| ddb7fd0f L |
8854 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
| 8855 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
| 190eb1dd | 8856 | h->dyn_relocs = NULL; |
| a06ea964 NC |
8857 | |
| 8858 | /* Make sure undefined weak symbols are output as a dynamic | |
| 8859 | symbol in PIEs. */ | |
| 8860 | else if (h->dynindx == -1 | |
| 8861 | && !h->forced_local | |
| ff07562f | 8862 | && h->root.type == bfd_link_hash_undefweak |
| a06ea964 | 8863 | && !bfd_elf_link_record_dynamic_symbol (info, h)) |
| 0a1b45a2 | 8864 | return false; |
| a06ea964 NC |
8865 | } |
| 8866 | ||
| 8867 | } | |
| 8868 | else if (ELIMINATE_COPY_RELOCS) | |
| 8869 | { | |
| 8870 | /* For the non-shared case, discard space for relocs against | |
| 07d6d2b8 AM |
8871 | symbols which turn out to need copy relocs or are not |
| 8872 | dynamic. */ | |
| a06ea964 NC |
8873 | |
| 8874 | if (!h->non_got_ref | |
| 8875 | && ((h->def_dynamic | |
| 8876 | && !h->def_regular) | |
| 8877 | || (htab->root.dynamic_sections_created | |
| 8878 | && (h->root.type == bfd_link_hash_undefweak | |
| 8879 | || h->root.type == bfd_link_hash_undefined)))) | |
| 8880 | { | |
| 8881 | /* Make sure this symbol is output as a dynamic symbol. | |
| 8882 | Undefined weak syms won't yet be marked as dynamic. */ | |
| 8883 | if (h->dynindx == -1 | |
| 8884 | && !h->forced_local | |
| ff07562f | 8885 | && h->root.type == bfd_link_hash_undefweak |
| a06ea964 | 8886 | && !bfd_elf_link_record_dynamic_symbol (info, h)) |
| 0a1b45a2 | 8887 | return false; |
| a06ea964 NC |
8888 | |
| 8889 | /* If that succeeded, we know we'll be keeping all the | |
| 8890 | relocs. */ | |
| 8891 | if (h->dynindx != -1) | |
| 8892 | goto keep; | |
| 8893 | } | |
| 8894 | ||
| 190eb1dd | 8895 | h->dyn_relocs = NULL; |
| a06ea964 NC |
8896 | |
| 8897 | keep:; | |
| 8898 | } | |
| 8899 | ||
| 8900 | /* Finally, allocate space. */ | |
| 190eb1dd | 8901 | for (p = h->dyn_relocs; p != NULL; p = p->next) |
| a06ea964 NC |
8902 | { |
| 8903 | asection *sreloc; | |
| 8904 | ||
| 8905 | sreloc = elf_section_data (p->sec)->sreloc; | |
| 8906 | ||
| 8907 | BFD_ASSERT (sreloc != NULL); | |
| 8908 | ||
| 8909 | sreloc->size += p->count * RELOC_SIZE (htab); | |
| 8910 | } | |
| 8911 | ||
| 0a1b45a2 | 8912 | return true; |
| a06ea964 NC |
8913 | } |
| 8914 | ||
| 1419bbe5 WN |
8915 | /* Allocate space in .plt, .got and associated reloc sections for |
| 8916 | ifunc dynamic relocs. */ | |
| 8917 | ||
| 0a1b45a2 | 8918 | static bool |
| 1419bbe5 WN |
8919 | elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h, |
| 8920 | void *inf) | |
| 8921 | { | |
| 8922 | struct bfd_link_info *info; | |
| 8923 | struct elf_aarch64_link_hash_table *htab; | |
| 1419bbe5 WN |
8924 | |
| 8925 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
| 8926 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
| 8927 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
| 8928 | ||
| 8929 | There is no need to process bfd_link_hash_indirect symbols here | |
| 8930 | because we will also be presented with the concrete instance of | |
| 8931 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been | |
| 8932 | called to copy all relevant data from the generic to the concrete | |
| 2d0ca824 | 8933 | symbol instance. */ |
| 1419bbe5 | 8934 | if (h->root.type == bfd_link_hash_indirect) |
| 0a1b45a2 | 8935 | return true; |
| 1419bbe5 WN |
8936 | |
| 8937 | if (h->root.type == bfd_link_hash_warning) | |
| 8938 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
| 8939 | ||
| 8940 | info = (struct bfd_link_info *) inf; | |
| 8941 | htab = elf_aarch64_hash_table (info); | |
| 8942 | ||
| 1419bbe5 WN |
8943 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
| 8944 | here if it is defined and referenced in a non-shared object. */ | |
| 8945 | if (h->type == STT_GNU_IFUNC | |
| 8946 | && h->def_regular) | |
| 8947 | return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, | |
| 190eb1dd | 8948 | &h->dyn_relocs, |
| 1419bbe5 WN |
8949 | htab->plt_entry_size, |
| 8950 | htab->plt_header_size, | |
| 233cc9c1 | 8951 | GOT_ENTRY_SIZE, |
| 0a1b45a2 AM |
8952 | false); |
| 8953 | return true; | |
| 1419bbe5 WN |
8954 | } |
| 8955 | ||
| 1419bbe5 WN |
8956 | /* Allocate space in .plt, .got and associated reloc sections for |
| 8957 | local ifunc dynamic relocs. */ | |
| 8958 | ||
| 1201fda6 | 8959 | static int |
| 1419bbe5 WN |
8960 | elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf) |
| 8961 | { | |
| 8962 | struct elf_link_hash_entry *h | |
| 8963 | = (struct elf_link_hash_entry *) *slot; | |
| 8964 | ||
| 8965 | if (h->type != STT_GNU_IFUNC | |
| 8966 | || !h->def_regular | |
| 8967 | || !h->ref_regular | |
| 8968 | || !h->forced_local | |
| 8969 | || h->root.type != bfd_link_hash_defined) | |
| 8970 | abort (); | |
| 8971 | ||
| 8972 | return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf); | |
| 8973 | } | |
| a06ea964 | 8974 | |
| a06ea964 NC |
8975 | /* This is the most important function of all . Innocuosly named |
| 8976 | though ! */ | |
| 2d0ca824 | 8977 | |
| 0a1b45a2 | 8978 | static bool |
| cec5225b | 8979 | elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
| a06ea964 NC |
8980 | struct bfd_link_info *info) |
| 8981 | { | |
| cec5225b | 8982 | struct elf_aarch64_link_hash_table *htab; |
| a06ea964 NC |
8983 | bfd *dynobj; |
| 8984 | asection *s; | |
| 0a1b45a2 | 8985 | bool relocs; |
| a06ea964 NC |
8986 | bfd *ibfd; |
| 8987 | ||
| cec5225b | 8988 | htab = elf_aarch64_hash_table ((info)); |
| a06ea964 NC |
8989 | dynobj = htab->root.dynobj; |
| 8990 | ||
| 8991 | BFD_ASSERT (dynobj != NULL); | |
| 8992 | ||
| 8993 | if (htab->root.dynamic_sections_created) | |
| 8994 | { | |
| 9b8b325a | 8995 | if (bfd_link_executable (info) && !info->nointerp) |
| a06ea964 NC |
8996 | { |
| 8997 | s = bfd_get_linker_section (dynobj, ".interp"); | |
| 8998 | if (s == NULL) | |
| 8999 | abort (); | |
| 9000 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
| 9001 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
| 9002 | } | |
| 9003 | } | |
| 9004 | ||
| 9005 | /* Set up .got offsets for local syms, and space for local dynamic | |
| 9006 | relocs. */ | |
| c72f2fb2 | 9007 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| a06ea964 NC |
9008 | { |
| 9009 | struct elf_aarch64_local_symbol *locals = NULL; | |
| 9010 | Elf_Internal_Shdr *symtab_hdr; | |
| 9011 | asection *srel; | |
| 9012 | unsigned int i; | |
| 9013 | ||
| 9014 | if (!is_aarch64_elf (ibfd)) | |
| 9015 | continue; | |
| 9016 | ||
| 9017 | for (s = ibfd->sections; s != NULL; s = s->next) | |
| 9018 | { | |
| 9019 | struct elf_dyn_relocs *p; | |
| 9020 | ||
| 9021 | for (p = (struct elf_dyn_relocs *) | |
| 9022 | (elf_section_data (s)->local_dynrel); p != NULL; p = p->next) | |
| 9023 | { | |
| 9024 | if (!bfd_is_abs_section (p->sec) | |
| 9025 | && bfd_is_abs_section (p->sec->output_section)) | |
| 9026 | { | |
| 9027 | /* Input section has been discarded, either because | |
| 9028 | it is a copy of a linkonce section or due to | |
| 9029 | linker script /DISCARD/, so we'll be discarding | |
| 9030 | the relocs too. */ | |
| 9031 | } | |
| 9032 | else if (p->count != 0) | |
| 9033 | { | |
| 9034 | srel = elf_section_data (p->sec)->sreloc; | |
| 9035 | srel->size += p->count * RELOC_SIZE (htab); | |
| 9036 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
| 9037 | info->flags |= DF_TEXTREL; | |
| 9038 | } | |
| 9039 | } | |
| 9040 | } | |
| 9041 | ||
| cec5225b | 9042 | locals = elf_aarch64_locals (ibfd); |
| a06ea964 NC |
9043 | if (!locals) |
| 9044 | continue; | |
| 9045 | ||
| 9046 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
| 9047 | srel = htab->root.srelgot; | |
| 9048 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
| 9049 | { | |
| 9050 | locals[i].got_offset = (bfd_vma) - 1; | |
| 9051 | locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
| 9052 | if (locals[i].got_refcount > 0) | |
| 9053 | { | |
| 9054 | unsigned got_type = locals[i].got_type; | |
| 9055 | if (got_type & GOT_TLSDESC_GD) | |
| 9056 | { | |
| 9057 | locals[i].tlsdesc_got_jump_table_offset = | |
| 9058 | (htab->root.sgotplt->size | |
| 9059 | - aarch64_compute_jump_table_size (htab)); | |
| 9060 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
| 9061 | locals[i].got_offset = (bfd_vma) - 2; | |
| 9062 | } | |
| 9063 | ||
| 9064 | if (got_type & GOT_TLS_GD) | |
| 9065 | { | |
| 9066 | locals[i].got_offset = htab->root.sgot->size; | |
| 9067 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
| 9068 | } | |
| 9069 | ||
| b53b1bed JW |
9070 | if (got_type & GOT_TLS_IE |
| 9071 | || got_type & GOT_NORMAL) | |
| a06ea964 NC |
9072 | { |
| 9073 | locals[i].got_offset = htab->root.sgot->size; | |
| 9074 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
| 9075 | } | |
| 9076 | ||
| 9077 | if (got_type == GOT_UNKNOWN) | |
| 9078 | { | |
| 9079 | } | |
| 9080 | ||
| 0e1862bb | 9081 | if (bfd_link_pic (info)) |
| a06ea964 NC |
9082 | { |
| 9083 | if (got_type & GOT_TLSDESC_GD) | |
| 9084 | { | |
| 9085 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
| 9086 | /* Note RELOC_COUNT not incremented here! */ | |
| 9bcc30e4 | 9087 | htab->root.tlsdesc_plt = (bfd_vma) - 1; |
| a06ea964 NC |
9088 | } |
| 9089 | ||
| 9090 | if (got_type & GOT_TLS_GD) | |
| 9091 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
| 9092 | ||
| b53b1bed JW |
9093 | if (got_type & GOT_TLS_IE |
| 9094 | || got_type & GOT_NORMAL) | |
| a06ea964 NC |
9095 | htab->root.srelgot->size += RELOC_SIZE (htab); |
| 9096 | } | |
| 9097 | } | |
| 9098 | else | |
| 9099 | { | |
| 9100 | locals[i].got_refcount = (bfd_vma) - 1; | |
| 9101 | } | |
| 9102 | } | |
| 9103 | } | |
| 9104 | ||
| 9105 | ||
| 9106 | /* Allocate global sym .plt and .got entries, and space for global | |
| 9107 | sym dynamic relocs. */ | |
| cec5225b | 9108 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs, |
| a06ea964 NC |
9109 | info); |
| 9110 | ||
| 1419bbe5 WN |
9111 | /* Allocate global ifunc sym .plt and .got entries, and space for global |
| 9112 | ifunc sym dynamic relocs. */ | |
| 9113 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs, | |
| 9114 | info); | |
| 9115 | ||
| 1419bbe5 WN |
9116 | /* Allocate .plt and .got entries, and space for local ifunc symbols. */ |
| 9117 | htab_traverse (htab->loc_hash_table, | |
| 9118 | elfNN_aarch64_allocate_local_ifunc_dynrelocs, | |
| 9119 | info); | |
| a06ea964 NC |
9120 | |
| 9121 | /* For every jump slot reserved in the sgotplt, reloc_count is | |
| 9122 | incremented. However, when we reserve space for TLS descriptors, | |
| 9123 | it's not incremented, so in order to compute the space reserved | |
| 9124 | for them, it suffices to multiply the reloc count by the jump | |
| 9125 | slot size. */ | |
| 9126 | ||
| 9127 | if (htab->root.srelplt) | |
| 8847944f | 9128 | htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab); |
| a06ea964 | 9129 | |
| 9bcc30e4 | 9130 | if (htab->root.tlsdesc_plt) |
| a06ea964 NC |
9131 | { |
| 9132 | if (htab->root.splt->size == 0) | |
| 37c18eed | 9133 | htab->root.splt->size += htab->plt_header_size; |
| a06ea964 | 9134 | |
| a06ea964 | 9135 | /* If we're not using lazy TLS relocations, don't generate the |
| ce12121b | 9136 | GOT and PLT entry required. */ |
| 9bcc30e4 L |
9137 | if ((info->flags & DF_BIND_NOW)) |
| 9138 | htab->root.tlsdesc_plt = 0; | |
| 9139 | else | |
| a06ea964 | 9140 | { |
| 9bcc30e4 | 9141 | htab->root.tlsdesc_plt = htab->root.splt->size; |
| ce12121b TC |
9142 | htab->root.splt->size += htab->tlsdesc_plt_entry_size; |
| 9143 | ||
| 9bcc30e4 | 9144 | htab->root.tlsdesc_got = htab->root.sgot->size; |
| a06ea964 NC |
9145 | htab->root.sgot->size += GOT_ENTRY_SIZE; |
| 9146 | } | |
| 9147 | } | |
| 9148 | ||
| 68fcca92 | 9149 | /* Init mapping symbols information to use later to distingush between |
| 4106101c MS |
9150 | code and data while scanning for errata. */ |
| 9151 | if (htab->fix_erratum_835769 || htab->fix_erratum_843419) | |
| 68fcca92 JW |
9152 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 9153 | { | |
| 9154 | if (!is_aarch64_elf (ibfd)) | |
| 9155 | continue; | |
| 9156 | bfd_elfNN_aarch64_init_maps (ibfd); | |
| 9157 | } | |
| 9158 | ||
| a06ea964 NC |
9159 | /* We now have determined the sizes of the various dynamic sections. |
| 9160 | Allocate memory for them. */ | |
| 0a1b45a2 | 9161 | relocs = false; |
| a06ea964 NC |
9162 | for (s = dynobj->sections; s != NULL; s = s->next) |
| 9163 | { | |
| 9164 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
| 9165 | continue; | |
| 9166 | ||
| 9167 | if (s == htab->root.splt | |
| 9168 | || s == htab->root.sgot | |
| 9169 | || s == htab->root.sgotplt | |
| 9170 | || s == htab->root.iplt | |
| 9d19e4fd | 9171 | || s == htab->root.igotplt |
| 5474d94f AM |
9172 | || s == htab->root.sdynbss |
| 9173 | || s == htab->root.sdynrelro) | |
| a06ea964 NC |
9174 | { |
| 9175 | /* Strip this section if we don't need it; see the | |
| 9176 | comment below. */ | |
| 9177 | } | |
| 08dedd66 | 9178 | else if (startswith (bfd_section_name (s), ".rela")) |
| a06ea964 NC |
9179 | { |
| 9180 | if (s->size != 0 && s != htab->root.srelplt) | |
| 0a1b45a2 | 9181 | relocs = true; |
| a06ea964 NC |
9182 | |
| 9183 | /* We use the reloc_count field as a counter if we need | |
| 9184 | to copy relocs into the output file. */ | |
| 9185 | if (s != htab->root.srelplt) | |
| 9186 | s->reloc_count = 0; | |
| 9187 | } | |
| 9188 | else | |
| 9189 | { | |
| 9190 | /* It's not one of our sections, so don't allocate space. */ | |
| 9191 | continue; | |
| 9192 | } | |
| 9193 | ||
| 9194 | if (s->size == 0) | |
| 9195 | { | |
| 9196 | /* If we don't need this section, strip it from the | |
| 9197 | output file. This is mostly to handle .rela.bss and | |
| 9198 | .rela.plt. We must create both sections in | |
| 9199 | create_dynamic_sections, because they must be created | |
| 9200 | before the linker maps input sections to output | |
| 9201 | sections. The linker does that before | |
| 9202 | adjust_dynamic_symbol is called, and it is that | |
| 9203 | function which decides whether anything needs to go | |
| 9204 | into these sections. */ | |
| a06ea964 NC |
9205 | s->flags |= SEC_EXCLUDE; |
| 9206 | continue; | |
| 9207 | } | |
| 9208 | ||
| 9209 | if ((s->flags & SEC_HAS_CONTENTS) == 0) | |
| 9210 | continue; | |
| 9211 | ||
| 9212 | /* Allocate memory for the section contents. We use bfd_zalloc | |
| 07d6d2b8 AM |
9213 | here in case unused entries are not reclaimed before the |
| 9214 | section's contents are written out. This should not happen, | |
| 9215 | but this way if it does, we get a R_AARCH64_NONE reloc instead | |
| 9216 | of garbage. */ | |
| a06ea964 NC |
9217 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
| 9218 | if (s->contents == NULL) | |
| 0a1b45a2 | 9219 | return false; |
| a06ea964 NC |
9220 | } |
| 9221 | ||
| 9222 | if (htab->root.dynamic_sections_created) | |
| 9223 | { | |
| 9224 | /* Add some entries to the .dynamic section. We fill in the | |
| 07d6d2b8 AM |
9225 | values later, in elfNN_aarch64_finish_dynamic_sections, but we |
| 9226 | must add the entries now so that we get the correct size for | |
| 9227 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
| 9228 | dynamic linker and used by the debugger. */ | |
| a06ea964 NC |
9229 | #define add_dynamic_entry(TAG, VAL) \ |
| 9230 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
| 9231 | ||
| 3084d7a2 | 9232 | if (!_bfd_elf_add_dynamic_tags (output_bfd, info, relocs)) |
| 0a1b45a2 | 9233 | return false; |
| a06ea964 NC |
9234 | |
| 9235 | if (htab->root.splt->size != 0) | |
| 9236 | { | |
| 823710d5 SN |
9237 | if (htab->variant_pcs |
| 9238 | && !add_dynamic_entry (DT_AARCH64_VARIANT_PCS, 0)) | |
| 0a1b45a2 | 9239 | return false; |
| 823710d5 | 9240 | |
| 1dbade74 SD |
9241 | if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_BTI_PAC) |
| 9242 | && (!add_dynamic_entry (DT_AARCH64_BTI_PLT, 0) | |
| 9243 | || !add_dynamic_entry (DT_AARCH64_PAC_PLT, 0))) | |
| 0a1b45a2 | 9244 | return false; |
| 1dbade74 SD |
9245 | |
| 9246 | else if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_BTI) | |
| 9247 | && !add_dynamic_entry (DT_AARCH64_BTI_PLT, 0)) | |
| 0a1b45a2 | 9248 | return false; |
| 1dbade74 SD |
9249 | |
| 9250 | else if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_PAC) | |
| 9251 | && !add_dynamic_entry (DT_AARCH64_PAC_PLT, 0)) | |
| 0a1b45a2 | 9252 | return false; |
| a06ea964 | 9253 | } |
| a06ea964 NC |
9254 | } |
| 9255 | #undef add_dynamic_entry | |
| 9256 | ||
| 0a1b45a2 | 9257 | return true; |
| a06ea964 NC |
9258 | } |
| 9259 | ||
| 9260 | static inline void | |
| caed7120 YZ |
9261 | elf_aarch64_update_plt_entry (bfd *output_bfd, |
| 9262 | bfd_reloc_code_real_type r_type, | |
| 9263 | bfd_byte *plt_entry, bfd_vma value) | |
| a06ea964 | 9264 | { |
| caed7120 YZ |
9265 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type); |
| 9266 | ||
| 1d75a8e2 NC |
9267 | /* FIXME: We should check the return value from this function call. */ |
| 9268 | (void) _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value); | |
| a06ea964 NC |
9269 | } |
| 9270 | ||
| 9271 | static void | |
| cec5225b YZ |
9272 | elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h, |
| 9273 | struct elf_aarch64_link_hash_table | |
| 1419bbe5 WN |
9274 | *htab, bfd *output_bfd, |
| 9275 | struct bfd_link_info *info) | |
| a06ea964 NC |
9276 | { |
| 9277 | bfd_byte *plt_entry; | |
| 9278 | bfd_vma plt_index; | |
| 9279 | bfd_vma got_offset; | |
| 9280 | bfd_vma gotplt_entry_address; | |
| 9281 | bfd_vma plt_entry_address; | |
| 9282 | Elf_Internal_Rela rela; | |
| 9283 | bfd_byte *loc; | |
| 1419bbe5 WN |
9284 | asection *plt, *gotplt, *relplt; |
| 9285 | ||
| 9286 | /* When building a static executable, use .iplt, .igot.plt and | |
| 9287 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
| 9288 | if (htab->root.splt != NULL) | |
| 9289 | { | |
| 9290 | plt = htab->root.splt; | |
| 9291 | gotplt = htab->root.sgotplt; | |
| 9292 | relplt = htab->root.srelplt; | |
| 9293 | } | |
| 9294 | else | |
| 9295 | { | |
| 9296 | plt = htab->root.iplt; | |
| 9297 | gotplt = htab->root.igotplt; | |
| 9298 | relplt = htab->root.irelplt; | |
| 9299 | } | |
| 9300 | ||
| 9301 | /* Get the index in the procedure linkage table which | |
| 9302 | corresponds to this symbol. This is the index of this symbol | |
| 9303 | in all the symbols for which we are making plt entries. The | |
| 9304 | first entry in the procedure linkage table is reserved. | |
| a06ea964 | 9305 | |
| 1419bbe5 WN |
9306 | Get the offset into the .got table of the entry that |
| 9307 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE | |
| 9308 | bytes. The first three are reserved for the dynamic linker. | |
| 692e2b8b | 9309 | |
| 1419bbe5 WN |
9310 | For static executables, we don't reserve anything. */ |
| 9311 | ||
| 9312 | if (plt == htab->root.splt) | |
| 9313 | { | |
| 9314 | plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size; | |
| 9315 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
| 9316 | } | |
| 9317 | else | |
| 9318 | { | |
| 9319 | plt_index = h->plt.offset / htab->plt_entry_size; | |
| 9320 | got_offset = plt_index * GOT_ENTRY_SIZE; | |
| 9321 | } | |
| 9322 | ||
| 9323 | plt_entry = plt->contents + h->plt.offset; | |
| 9324 | plt_entry_address = plt->output_section->vma | |
| f44a1f8e | 9325 | + plt->output_offset + h->plt.offset; |
| 1419bbe5 WN |
9326 | gotplt_entry_address = gotplt->output_section->vma + |
| 9327 | gotplt->output_offset + got_offset; | |
| a06ea964 NC |
9328 | |
| 9329 | /* Copy in the boiler-plate for the PLTn entry. */ | |
| 37c18eed SD |
9330 | memcpy (plt_entry, htab->plt_entry, htab->plt_entry_size); |
| 9331 | ||
| 9332 | /* First instruction in BTI enabled PLT stub is a BTI | |
| 9333 | instruction so skip it. */ | |
| 9334 | if (elf_aarch64_tdata (output_bfd)->plt_type & PLT_BTI | |
| 9335 | && elf_elfheader (output_bfd)->e_type == ET_EXEC) | |
| 9336 | plt_entry = plt_entry + 4; | |
| a06ea964 NC |
9337 | |
| 9338 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
| 9339 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
| caed7120 YZ |
9340 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
| 9341 | plt_entry, | |
| 9342 | PG (gotplt_entry_address) - | |
| 9343 | PG (plt_entry_address)); | |
| a06ea964 NC |
9344 | |
| 9345 | /* Fill in the lo12 bits for the load from the pltgot. */ | |
| caed7120 YZ |
9346 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
| 9347 | plt_entry + 4, | |
| 9348 | PG_OFFSET (gotplt_entry_address)); | |
| a06ea964 | 9349 | |
| 9aff4b7a | 9350 | /* Fill in the lo12 bits for the add from the pltgot entry. */ |
| caed7120 YZ |
9351 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
| 9352 | plt_entry + 8, | |
| 9353 | PG_OFFSET (gotplt_entry_address)); | |
| a06ea964 NC |
9354 | |
| 9355 | /* All the GOTPLT Entries are essentially initialized to PLT0. */ | |
| cec5225b | 9356 | bfd_put_NN (output_bfd, |
| 1419bbe5 WN |
9357 | plt->output_section->vma + plt->output_offset, |
| 9358 | gotplt->contents + got_offset); | |
| a06ea964 | 9359 | |
| a06ea964 | 9360 | rela.r_offset = gotplt_entry_address; |
| 1419bbe5 WN |
9361 | |
| 9362 | if (h->dynindx == -1 | |
| 0e1862bb | 9363 | || ((bfd_link_executable (info) |
| 1419bbe5 WN |
9364 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
| 9365 | && h->def_regular | |
| 9366 | && h->type == STT_GNU_IFUNC)) | |
| 9367 | { | |
| 9368 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
| 9369 | R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */ | |
| 9370 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
| 9371 | rela.r_addend = (h->root.u.def.value | |
| 9372 | + h->root.u.def.section->output_section->vma | |
| 9373 | + h->root.u.def.section->output_offset); | |
| 9374 | } | |
| 9375 | else | |
| 9376 | { | |
| 9377 | /* Fill in the entry in the .rela.plt section. */ | |
| 9378 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT)); | |
| 9379 | rela.r_addend = 0; | |
| 9380 | } | |
| a06ea964 NC |
9381 | |
| 9382 | /* Compute the relocation entry to used based on PLT index and do | |
| 9383 | not adjust reloc_count. The reloc_count has already been adjusted | |
| 9384 | to account for this entry. */ | |
| 1419bbe5 | 9385 | loc = relplt->contents + plt_index * RELOC_SIZE (htab); |
| cec5225b | 9386 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
| a06ea964 NC |
9387 | } |
| 9388 | ||
| 9389 | /* Size sections even though they're not dynamic. We use it to setup | |
| 9390 | _TLS_MODULE_BASE_, if needed. */ | |
| 9391 | ||
| 0a1b45a2 | 9392 | static bool |
| cec5225b | 9393 | elfNN_aarch64_always_size_sections (bfd *output_bfd, |
| a06ea964 NC |
9394 | struct bfd_link_info *info) |
| 9395 | { | |
| 9396 | asection *tls_sec; | |
| 9397 | ||
| 0e1862bb | 9398 | if (bfd_link_relocatable (info)) |
| 0a1b45a2 | 9399 | return true; |
| a06ea964 NC |
9400 | |
| 9401 | tls_sec = elf_hash_table (info)->tls_sec; | |
| 9402 | ||
| 9403 | if (tls_sec) | |
| 9404 | { | |
| 9405 | struct elf_link_hash_entry *tlsbase; | |
| 9406 | ||
| 9407 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
| 0a1b45a2 | 9408 | "_TLS_MODULE_BASE_", true, true, false); |
| a06ea964 NC |
9409 | |
| 9410 | if (tlsbase) | |
| 9411 | { | |
| 9412 | struct bfd_link_hash_entry *h = NULL; | |
| 9413 | const struct elf_backend_data *bed = | |
| 9414 | get_elf_backend_data (output_bfd); | |
| 9415 | ||
| 9416 | if (!(_bfd_generic_link_add_one_symbol | |
| 9417 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
| 0a1b45a2 AM |
9418 | tls_sec, 0, NULL, false, bed->collect, &h))) |
| 9419 | return false; | |
| a06ea964 NC |
9420 | |
| 9421 | tlsbase->type = STT_TLS; | |
| 9422 | tlsbase = (struct elf_link_hash_entry *) h; | |
| 9423 | tlsbase->def_regular = 1; | |
| 9424 | tlsbase->other = STV_HIDDEN; | |
| 0a1b45a2 | 9425 | (*bed->elf_backend_hide_symbol) (info, tlsbase, true); |
| a06ea964 NC |
9426 | } |
| 9427 | } | |
| 9428 | ||
| 0a1b45a2 | 9429 | return true; |
| a06ea964 NC |
9430 | } |
| 9431 | ||
| 9432 | /* Finish up dynamic symbol handling. We set the contents of various | |
| 9433 | dynamic sections here. */ | |
| 2d0ca824 | 9434 | |
| 0a1b45a2 | 9435 | static bool |
| cec5225b | 9436 | elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd, |
| a06ea964 NC |
9437 | struct bfd_link_info *info, |
| 9438 | struct elf_link_hash_entry *h, | |
| 9439 | Elf_Internal_Sym *sym) | |
| 9440 | { | |
| cec5225b YZ |
9441 | struct elf_aarch64_link_hash_table *htab; |
| 9442 | htab = elf_aarch64_hash_table (info); | |
| a06ea964 NC |
9443 | |
| 9444 | if (h->plt.offset != (bfd_vma) - 1) | |
| 9445 | { | |
| 1419bbe5 WN |
9446 | asection *plt, *gotplt, *relplt; |
| 9447 | ||
| a06ea964 | 9448 | /* This symbol has an entry in the procedure linkage table. Set |
| 07d6d2b8 | 9449 | it up. */ |
| a06ea964 | 9450 | |
| 1419bbe5 WN |
9451 | /* When building a static executable, use .iplt, .igot.plt and |
| 9452 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
| 9453 | if (htab->root.splt != NULL) | |
| 9454 | { | |
| 9455 | plt = htab->root.splt; | |
| 9456 | gotplt = htab->root.sgotplt; | |
| 9457 | relplt = htab->root.srelplt; | |
| 9458 | } | |
| 9459 | else | |
| 9460 | { | |
| 9461 | plt = htab->root.iplt; | |
| 9462 | gotplt = htab->root.igotplt; | |
| 9463 | relplt = htab->root.irelplt; | |
| 9464 | } | |
| 9465 | ||
| 9466 | /* This symbol has an entry in the procedure linkage table. Set | |
| 9467 | it up. */ | |
| 9468 | if ((h->dynindx == -1 | |
| 0e1862bb | 9469 | && !((h->forced_local || bfd_link_executable (info)) |
| 1419bbe5 WN |
9470 | && h->def_regular |
| 9471 | && h->type == STT_GNU_IFUNC)) | |
| 9472 | || plt == NULL | |
| 9473 | || gotplt == NULL | |
| 9474 | || relplt == NULL) | |
| 0a1b45a2 | 9475 | return false; |
| a06ea964 | 9476 | |
| 1419bbe5 | 9477 | elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info); |
| a06ea964 NC |
9478 | if (!h->def_regular) |
| 9479 | { | |
| 9480 | /* Mark the symbol as undefined, rather than as defined in | |
| 46b87d49 | 9481 | the .plt section. */ |
| a06ea964 | 9482 | sym->st_shndx = SHN_UNDEF; |
| 46b87d49 WN |
9483 | /* If the symbol is weak we need to clear the value. |
| 9484 | Otherwise, the PLT entry would provide a definition for | |
| 9485 | the symbol even if the symbol wasn't defined anywhere, | |
| 9486 | and so the symbol would never be NULL. Leave the value if | |
| 9487 | there were any relocations where pointer equality matters | |
| 9488 | (this is a clue for the dynamic linker, to make function | |
| 9489 | pointer comparisons work between an application and shared | |
| 9490 | library). */ | |
| 9491 | if (!h->ref_regular_nonweak || !h->pointer_equality_needed) | |
| 9492 | sym->st_value = 0; | |
| a06ea964 NC |
9493 | } |
| 9494 | } | |
| 9495 | ||
| 9496 | if (h->got.offset != (bfd_vma) - 1 | |
| a377ae2a SN |
9497 | && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL |
| 9498 | /* Undefined weak symbol in static PIE resolves to 0 without | |
| 9499 | any dynamic relocations. */ | |
| 9500 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
| a06ea964 NC |
9501 | { |
| 9502 | Elf_Internal_Rela rela; | |
| 9503 | bfd_byte *loc; | |
| 9504 | ||
| 9505 | /* This symbol has an entry in the global offset table. Set it | |
| 07d6d2b8 | 9506 | up. */ |
| a06ea964 NC |
9507 | if (htab->root.sgot == NULL || htab->root.srelgot == NULL) |
| 9508 | abort (); | |
| 9509 | ||
| 9510 | rela.r_offset = (htab->root.sgot->output_section->vma | |
| 9511 | + htab->root.sgot->output_offset | |
| 9512 | + (h->got.offset & ~(bfd_vma) 1)); | |
| 9513 | ||
| 49206388 WN |
9514 | if (h->def_regular |
| 9515 | && h->type == STT_GNU_IFUNC) | |
| 9516 | { | |
| 0e1862bb | 9517 | if (bfd_link_pic (info)) |
| 49206388 WN |
9518 | { |
| 9519 | /* Generate R_AARCH64_GLOB_DAT. */ | |
| 9520 | goto do_glob_dat; | |
| 9521 | } | |
| 9522 | else | |
| 9523 | { | |
| 9524 | asection *plt; | |
| 9525 | ||
| 9526 | if (!h->pointer_equality_needed) | |
| 9527 | abort (); | |
| 9528 | ||
| 9529 | /* For non-shared object, we can't use .got.plt, which | |
| 9530 | contains the real function address if we need pointer | |
| 9531 | equality. We load the GOT entry with the PLT entry. */ | |
| 9532 | plt = htab->root.splt ? htab->root.splt : htab->root.iplt; | |
| 9533 | bfd_put_NN (output_bfd, (plt->output_section->vma | |
| 9534 | + plt->output_offset | |
| 9535 | + h->plt.offset), | |
| 9536 | htab->root.sgot->contents | |
| 9537 | + (h->got.offset & ~(bfd_vma) 1)); | |
| 0a1b45a2 | 9538 | return true; |
| 49206388 WN |
9539 | } |
| 9540 | } | |
| 0e1862bb | 9541 | else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h)) |
| a06ea964 | 9542 | { |
| 0ee3a6db | 9543 | if (!(h->def_regular || ELF_COMMON_DEF_P (h))) |
| 0a1b45a2 | 9544 | return false; |
| a06ea964 NC |
9545 | |
| 9546 | BFD_ASSERT ((h->got.offset & 1) != 0); | |
| a6bb11b2 | 9547 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); |
| a06ea964 NC |
9548 | rela.r_addend = (h->root.u.def.value |
| 9549 | + h->root.u.def.section->output_section->vma | |
| 9550 | + h->root.u.def.section->output_offset); | |
| 9551 | } | |
| 9552 | else | |
| 9553 | { | |
| dc1e8a47 | 9554 | do_glob_dat: |
| a06ea964 | 9555 | BFD_ASSERT ((h->got.offset & 1) == 0); |
| cec5225b | 9556 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
| a06ea964 | 9557 | htab->root.sgot->contents + h->got.offset); |
| a6bb11b2 | 9558 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT)); |
| a06ea964 NC |
9559 | rela.r_addend = 0; |
| 9560 | } | |
| 9561 | ||
| 9562 | loc = htab->root.srelgot->contents; | |
| 9563 | loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab); | |
| cec5225b | 9564 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
| a06ea964 NC |
9565 | } |
| 9566 | ||
| 9567 | if (h->needs_copy) | |
| 9568 | { | |
| 9569 | Elf_Internal_Rela rela; | |
| 5474d94f | 9570 | asection *s; |
| a06ea964 NC |
9571 | bfd_byte *loc; |
| 9572 | ||
| 9573 | /* This symbol needs a copy reloc. Set it up. */ | |
| a06ea964 NC |
9574 | if (h->dynindx == -1 |
| 9575 | || (h->root.type != bfd_link_hash_defined | |
| 9576 | && h->root.type != bfd_link_hash_defweak) | |
| 9d19e4fd | 9577 | || htab->root.srelbss == NULL) |
| a06ea964 NC |
9578 | abort (); |
| 9579 | ||
| 9580 | rela.r_offset = (h->root.u.def.value | |
| 9581 | + h->root.u.def.section->output_section->vma | |
| 9582 | + h->root.u.def.section->output_offset); | |
| a6bb11b2 | 9583 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY)); |
| a06ea964 | 9584 | rela.r_addend = 0; |
| afbf7e8e | 9585 | if (h->root.u.def.section == htab->root.sdynrelro) |
| 5474d94f AM |
9586 | s = htab->root.sreldynrelro; |
| 9587 | else | |
| 9588 | s = htab->root.srelbss; | |
| 9589 | loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab); | |
| cec5225b | 9590 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
| a06ea964 NC |
9591 | } |
| 9592 | ||
| 9593 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may | |
| 9594 | be NULL for local symbols. */ | |
| 9595 | if (sym != NULL | |
| 9637f6ef | 9596 | && (h == elf_hash_table (info)->hdynamic |
| a06ea964 NC |
9597 | || h == elf_hash_table (info)->hgot)) |
| 9598 | sym->st_shndx = SHN_ABS; | |
| 9599 | ||
| 0a1b45a2 | 9600 | return true; |
| a06ea964 NC |
9601 | } |
| 9602 | ||
| 1419bbe5 WN |
9603 | /* Finish up local dynamic symbol handling. We set the contents of |
| 9604 | various dynamic sections here. */ | |
| 9605 | ||
| 1201fda6 | 9606 | static int |
| 1419bbe5 WN |
9607 | elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf) |
| 9608 | { | |
| 9609 | struct elf_link_hash_entry *h | |
| 9610 | = (struct elf_link_hash_entry *) *slot; | |
| 9611 | struct bfd_link_info *info | |
| 9612 | = (struct bfd_link_info *) inf; | |
| 9613 | ||
| 9614 | return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd, | |
| 9615 | info, h, NULL); | |
| 9616 | } | |
| 9617 | ||
| a06ea964 | 9618 | static void |
| cec5225b YZ |
9619 | elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 9620 | struct elf_aarch64_link_hash_table | |
| a06ea964 NC |
9621 | *htab) |
| 9622 | { | |
| 9623 | /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between | |
| 9624 | small and large plts and at the minute just generates | |
| 9625 | the small PLT. */ | |
| 9626 | ||
| cec5225b | 9627 | /* PLT0 of the small PLT looks like this in ELF64 - |
| a06ea964 NC |
9628 | stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack. |
| 9629 | adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT | |
| 9630 | ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the | |
| 9631 | // symbol resolver | |
| 9632 | add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the | |
| 9633 | // GOTPLT entry for this. | |
| 9634 | br x17 | |
| cec5225b | 9635 | PLT0 will be slightly different in ELF32 due to different got entry |
| 2d0ca824 | 9636 | size. */ |
| caed7120 | 9637 | bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */ |
| a06ea964 NC |
9638 | bfd_vma plt_base; |
| 9639 | ||
| 9640 | ||
| 37c18eed SD |
9641 | memcpy (htab->root.splt->contents, htab->plt0_entry, |
| 9642 | htab->plt_header_size); | |
| 4d3bb356 SN |
9643 | |
| 9644 | /* PR 26312: Explicitly set the sh_entsize to 0 so that | |
| 9645 | consumers do not think that the section contains fixed | |
| 9646 | sized objects. */ | |
| 9647 | elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize = 0; | |
| a06ea964 | 9648 | |
| caed7120 YZ |
9649 | plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma |
| 9650 | + htab->root.sgotplt->output_offset | |
| 9651 | + GOT_ENTRY_SIZE * 2); | |
| a06ea964 NC |
9652 | |
| 9653 | plt_base = htab->root.splt->output_section->vma + | |
| f44a1f8e | 9654 | htab->root.splt->output_offset; |
| a06ea964 | 9655 | |
| 37c18eed SD |
9656 | /* First instruction in BTI enabled PLT stub is a BTI |
| 9657 | instruction so skip it. */ | |
| 9658 | bfd_byte *plt0_entry = htab->root.splt->contents; | |
| 9659 | if (elf_aarch64_tdata (output_bfd)->plt_type & PLT_BTI) | |
| 9660 | plt0_entry = plt0_entry + 4; | |
| 9661 | ||
| a06ea964 NC |
9662 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. |
| 9663 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
| caed7120 | 9664 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
| 37c18eed | 9665 | plt0_entry + 4, |
| caed7120 | 9666 | PG (plt_got_2nd_ent) - PG (plt_base + 4)); |
| a06ea964 | 9667 | |
| caed7120 | 9668 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
| 37c18eed | 9669 | plt0_entry + 8, |
| caed7120 | 9670 | PG_OFFSET (plt_got_2nd_ent)); |
| a06ea964 | 9671 | |
| caed7120 | 9672 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
| 37c18eed | 9673 | plt0_entry + 12, |
| caed7120 | 9674 | PG_OFFSET (plt_got_2nd_ent)); |
| a06ea964 NC |
9675 | } |
| 9676 | ||
| 0a1b45a2 | 9677 | static bool |
| cec5225b | 9678 | elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd, |
| a06ea964 NC |
9679 | struct bfd_link_info *info) |
| 9680 | { | |
| cec5225b | 9681 | struct elf_aarch64_link_hash_table *htab; |
| a06ea964 NC |
9682 | bfd *dynobj; |
| 9683 | asection *sdyn; | |
| 9684 | ||
| cec5225b | 9685 | htab = elf_aarch64_hash_table (info); |
| a06ea964 NC |
9686 | dynobj = htab->root.dynobj; |
| 9687 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); | |
| 9688 | ||
| 9689 | if (htab->root.dynamic_sections_created) | |
| 9690 | { | |
| cec5225b | 9691 | ElfNN_External_Dyn *dyncon, *dynconend; |
| a06ea964 NC |
9692 | |
| 9693 | if (sdyn == NULL || htab->root.sgot == NULL) | |
| 9694 | abort (); | |
| 9695 | ||
| cec5225b YZ |
9696 | dyncon = (ElfNN_External_Dyn *) sdyn->contents; |
| 9697 | dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size); | |
| a06ea964 NC |
9698 | for (; dyncon < dynconend; dyncon++) |
| 9699 | { | |
| 9700 | Elf_Internal_Dyn dyn; | |
| 9701 | asection *s; | |
| 9702 | ||
| cec5225b | 9703 | bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn); |
| a06ea964 NC |
9704 | |
| 9705 | switch (dyn.d_tag) | |
| 9706 | { | |
| 9707 | default: | |
| 9708 | continue; | |
| 9709 | ||
| 9710 | case DT_PLTGOT: | |
| 9711 | s = htab->root.sgotplt; | |
| 9712 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
| 9713 | break; | |
| 9714 | ||
| 9715 | case DT_JMPREL: | |
| 4ade44b7 AM |
9716 | s = htab->root.srelplt; |
| 9717 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
| a06ea964 NC |
9718 | break; |
| 9719 | ||
| 9720 | case DT_PLTRELSZ: | |
| c955de36 | 9721 | s = htab->root.srelplt; |
| a06ea964 NC |
9722 | dyn.d_un.d_val = s->size; |
| 9723 | break; | |
| 9724 | ||
| a06ea964 NC |
9725 | case DT_TLSDESC_PLT: |
| 9726 | s = htab->root.splt; | |
| 9727 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
| 9bcc30e4 | 9728 | + htab->root.tlsdesc_plt; |
| a06ea964 NC |
9729 | break; |
| 9730 | ||
| 9731 | case DT_TLSDESC_GOT: | |
| 9732 | s = htab->root.sgot; | |
| 9bcc30e4 | 9733 | BFD_ASSERT (htab->root.tlsdesc_got != (bfd_vma)-1); |
| a06ea964 | 9734 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset |
| 9bcc30e4 | 9735 | + htab->root.tlsdesc_got; |
| a06ea964 NC |
9736 | break; |
| 9737 | } | |
| 9738 | ||
| cec5225b | 9739 | bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon); |
| a06ea964 NC |
9740 | } |
| 9741 | ||
| 9742 | } | |
| 9743 | ||
| 9744 | /* Fill in the special first entry in the procedure linkage table. */ | |
| 9745 | if (htab->root.splt && htab->root.splt->size > 0) | |
| 9746 | { | |
| cec5225b | 9747 | elfNN_aarch64_init_small_plt0_entry (output_bfd, htab); |
| a06ea964 | 9748 | |
| 9bcc30e4 | 9749 | if (htab->root.tlsdesc_plt && !(info->flags & DF_BIND_NOW)) |
| a06ea964 | 9750 | { |
| 9bcc30e4 | 9751 | BFD_ASSERT (htab->root.tlsdesc_got != (bfd_vma)-1); |
| cec5225b | 9752 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
| 9bcc30e4 | 9753 | htab->root.sgot->contents + htab->root.tlsdesc_got); |
| a06ea964 | 9754 | |
| 37c18eed SD |
9755 | const bfd_byte *entry = elfNN_aarch64_tlsdesc_small_plt_entry; |
| 9756 | htab->tlsdesc_plt_entry_size = PLT_TLSDESC_ENTRY_SIZE; | |
| 9757 | ||
| 9758 | aarch64_plt_type type = elf_aarch64_tdata (output_bfd)->plt_type; | |
| 1dbade74 | 9759 | if (type == PLT_BTI || type == PLT_BTI_PAC) |
| 37c18eed SD |
9760 | { |
| 9761 | entry = elfNN_aarch64_tlsdesc_small_plt_bti_entry; | |
| 37c18eed SD |
9762 | } |
| 9763 | ||
| 9bcc30e4 | 9764 | memcpy (htab->root.splt->contents + htab->root.tlsdesc_plt, |
| 37c18eed | 9765 | entry, htab->tlsdesc_plt_entry_size); |
| a06ea964 NC |
9766 | |
| 9767 | { | |
| 9768 | bfd_vma adrp1_addr = | |
| 9769 | htab->root.splt->output_section->vma | |
| 9bcc30e4 L |
9770 | + htab->root.splt->output_offset |
| 9771 | + htab->root.tlsdesc_plt + 4; | |
| a06ea964 | 9772 | |
| caed7120 | 9773 | bfd_vma adrp2_addr = adrp1_addr + 4; |
| a06ea964 NC |
9774 | |
| 9775 | bfd_vma got_addr = | |
| 9776 | htab->root.sgot->output_section->vma | |
| 9777 | + htab->root.sgot->output_offset; | |
| 9778 | ||
| 9779 | bfd_vma pltgot_addr = | |
| 9780 | htab->root.sgotplt->output_section->vma | |
| 9781 | + htab->root.sgotplt->output_offset; | |
| 9782 | ||
| 9bcc30e4 | 9783 | bfd_vma dt_tlsdesc_got = got_addr + htab->root.tlsdesc_got; |
| caed7120 YZ |
9784 | |
| 9785 | bfd_byte *plt_entry = | |
| 9bcc30e4 | 9786 | htab->root.splt->contents + htab->root.tlsdesc_plt; |
| a06ea964 | 9787 | |
| 37c18eed SD |
9788 | /* First instruction in BTI enabled PLT stub is a BTI |
| 9789 | instruction so skip it. */ | |
| 9790 | if (type & PLT_BTI) | |
| 9791 | { | |
| 9792 | plt_entry = plt_entry + 4; | |
| 9793 | adrp1_addr = adrp1_addr + 4; | |
| 9794 | adrp2_addr = adrp2_addr + 4; | |
| 9795 | } | |
| 9796 | ||
| a06ea964 | 9797 | /* adrp x2, DT_TLSDESC_GOT */ |
| caed7120 YZ |
9798 | elf_aarch64_update_plt_entry (output_bfd, |
| 9799 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
| 9800 | plt_entry + 4, | |
| 9801 | (PG (dt_tlsdesc_got) | |
| 9802 | - PG (adrp1_addr))); | |
| a06ea964 NC |
9803 | |
| 9804 | /* adrp x3, 0 */ | |
| caed7120 YZ |
9805 | elf_aarch64_update_plt_entry (output_bfd, |
| 9806 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
| 9807 | plt_entry + 8, | |
| 9808 | (PG (pltgot_addr) | |
| 9809 | - PG (adrp2_addr))); | |
| a06ea964 NC |
9810 | |
| 9811 | /* ldr x2, [x2, #0] */ | |
| caed7120 YZ |
9812 | elf_aarch64_update_plt_entry (output_bfd, |
| 9813 | BFD_RELOC_AARCH64_LDSTNN_LO12, | |
| 9814 | plt_entry + 12, | |
| 9815 | PG_OFFSET (dt_tlsdesc_got)); | |
| a06ea964 NC |
9816 | |
| 9817 | /* add x3, x3, 0 */ | |
| caed7120 YZ |
9818 | elf_aarch64_update_plt_entry (output_bfd, |
| 9819 | BFD_RELOC_AARCH64_ADD_LO12, | |
| 9820 | plt_entry + 16, | |
| 9821 | PG_OFFSET (pltgot_addr)); | |
| a06ea964 NC |
9822 | } |
| 9823 | } | |
| 9824 | } | |
| 9825 | ||
| 9826 | if (htab->root.sgotplt) | |
| 9827 | { | |
| 9828 | if (bfd_is_abs_section (htab->root.sgotplt->output_section)) | |
| 9829 | { | |
| 4eca0228 | 9830 | _bfd_error_handler |
| 871b3ab2 | 9831 | (_("discarded output section: `%pA'"), htab->root.sgotplt); |
| 0a1b45a2 | 9832 | return false; |
| a06ea964 NC |
9833 | } |
| 9834 | ||
| 9835 | /* Fill in the first three entries in the global offset table. */ | |
| 9836 | if (htab->root.sgotplt->size > 0) | |
| 9837 | { | |
| 8db339a6 MS |
9838 | bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents); |
| 9839 | ||
| a06ea964 | 9840 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ |
| cec5225b | 9841 | bfd_put_NN (output_bfd, |
| a06ea964 NC |
9842 | (bfd_vma) 0, |
| 9843 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE); | |
| cec5225b | 9844 | bfd_put_NN (output_bfd, |
| a06ea964 NC |
9845 | (bfd_vma) 0, |
| 9846 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2); | |
| 9847 | } | |
| 9848 | ||
| 8db339a6 MS |
9849 | if (htab->root.sgot) |
| 9850 | { | |
| 9851 | if (htab->root.sgot->size > 0) | |
| 9852 | { | |
| 9853 | bfd_vma addr = | |
| 9854 | sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0; | |
| 9855 | bfd_put_NN (output_bfd, addr, htab->root.sgot->contents); | |
| 9856 | } | |
| 9857 | } | |
| 9858 | ||
| a06ea964 NC |
9859 | elf_section_data (htab->root.sgotplt->output_section)-> |
| 9860 | this_hdr.sh_entsize = GOT_ENTRY_SIZE; | |
| 9861 | } | |
| 9862 | ||
| 9863 | if (htab->root.sgot && htab->root.sgot->size > 0) | |
| 9864 | elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize | |
| 9865 | = GOT_ENTRY_SIZE; | |
| 9866 | ||
| 1419bbe5 WN |
9867 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
| 9868 | htab_traverse (htab->loc_hash_table, | |
| 9869 | elfNN_aarch64_finish_local_dynamic_symbol, | |
| 9870 | info); | |
| 9871 | ||
| 0a1b45a2 | 9872 | return true; |
| a06ea964 NC |
9873 | } |
| 9874 | ||
| 37c18eed SD |
9875 | /* Check if BTI enabled PLTs are needed. Returns the type needed. */ |
| 9876 | static aarch64_plt_type | |
| 9877 | get_plt_type (bfd *abfd) | |
| 9878 | { | |
| 9879 | aarch64_plt_type ret = PLT_NORMAL; | |
| 9880 | bfd_byte *contents, *extdyn, *extdynend; | |
| 9881 | asection *sec = bfd_get_section_by_name (abfd, ".dynamic"); | |
| 8ef22662 AM |
9882 | if (!sec |
| 9883 | || sec->size < sizeof (ElfNN_External_Dyn) | |
| 9884 | || !bfd_malloc_and_get_section (abfd, sec, &contents)) | |
| 37c18eed SD |
9885 | return ret; |
| 9886 | extdyn = contents; | |
| 8ef22662 AM |
9887 | extdynend = contents + sec->size - sizeof (ElfNN_External_Dyn); |
| 9888 | for (; extdyn <= extdynend; extdyn += sizeof (ElfNN_External_Dyn)) | |
| 37c18eed SD |
9889 | { |
| 9890 | Elf_Internal_Dyn dyn; | |
| 9891 | bfd_elfNN_swap_dyn_in (abfd, extdyn, &dyn); | |
| 9892 | ||
| 9893 | /* Let's check the processor specific dynamic array tags. */ | |
| 9894 | bfd_vma tag = dyn.d_tag; | |
| 9895 | if (tag < DT_LOPROC || tag > DT_HIPROC) | |
| 9896 | continue; | |
| 9897 | ||
| 9898 | switch (tag) | |
| 9899 | { | |
| 9900 | case DT_AARCH64_BTI_PLT: | |
| 1dbade74 SD |
9901 | ret |= PLT_BTI; |
| 9902 | break; | |
| 9903 | ||
| 9904 | case DT_AARCH64_PAC_PLT: | |
| 9905 | ret |= PLT_PAC; | |
| 37c18eed SD |
9906 | break; |
| 9907 | ||
| 9908 | default: break; | |
| 9909 | } | |
| 9910 | } | |
| 9911 | free (contents); | |
| 9912 | return ret; | |
| 9913 | } | |
| 9914 | ||
| 9915 | static long | |
| 9916 | elfNN_aarch64_get_synthetic_symtab (bfd *abfd, | |
| 9917 | long symcount, | |
| 9918 | asymbol **syms, | |
| 9919 | long dynsymcount, | |
| 9920 | asymbol **dynsyms, | |
| 9921 | asymbol **ret) | |
| 9922 | { | |
| 9923 | elf_aarch64_tdata (abfd)->plt_type = get_plt_type (abfd); | |
| 9924 | return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms, | |
| 9925 | dynsymcount, dynsyms, ret); | |
| 9926 | } | |
| 9927 | ||
| a06ea964 NC |
9928 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
| 9929 | or (bfd_vma) -1 if it should not be included. */ | |
| 9930 | ||
| 9931 | static bfd_vma | |
| cec5225b | 9932 | elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt, |
| a06ea964 NC |
9933 | const arelent *rel ATTRIBUTE_UNUSED) |
| 9934 | { | |
| 37c18eed SD |
9935 | size_t plt0_size = PLT_ENTRY_SIZE; |
| 9936 | size_t pltn_size = PLT_SMALL_ENTRY_SIZE; | |
| 9937 | ||
| 1dbade74 SD |
9938 | if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_BTI_PAC) |
| 9939 | { | |
| 1dbade74 SD |
9940 | if (elf_elfheader (plt->owner)->e_type == ET_EXEC) |
| 9941 | pltn_size = PLT_BTI_PAC_SMALL_ENTRY_SIZE; | |
| 9942 | else | |
| 9943 | pltn_size = PLT_PAC_SMALL_ENTRY_SIZE; | |
| 9944 | } | |
| 9945 | else if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_BTI) | |
| 37c18eed | 9946 | { |
| 37c18eed SD |
9947 | if (elf_elfheader (plt->owner)->e_type == ET_EXEC) |
| 9948 | pltn_size = PLT_BTI_SMALL_ENTRY_SIZE; | |
| 9949 | } | |
| 1dbade74 SD |
9950 | else if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_PAC) |
| 9951 | { | |
| 1dbade74 SD |
9952 | pltn_size = PLT_PAC_SMALL_ENTRY_SIZE; |
| 9953 | } | |
| 9954 | ||
| 37c18eed | 9955 | return plt->vma + plt0_size + i * pltn_size; |
| a06ea964 NC |
9956 | } |
| 9957 | ||
| d691934d NC |
9958 | /* Returns TRUE if NAME is an AArch64 mapping symbol. |
| 9959 | The ARM ELF standard defines $x (for A64 code) and $d (for data). | |
| 9960 | It also allows a period initiated suffix to be added to the symbol, ie: | |
| 9961 | "$[adtx]\.[:sym_char]+". */ | |
| 9962 | ||
| 0a1b45a2 | 9963 | static bool |
| d691934d NC |
9964 | is_aarch64_mapping_symbol (const char * name) |
| 9965 | { | |
| 9966 | return name != NULL /* Paranoia. */ | |
| 9967 | && name[0] == '$' /* Note: if objcopy --prefix-symbols has been used then | |
| 9968 | the mapping symbols could have acquired a prefix. | |
| 9969 | We do not support this here, since such symbols no | |
| 9970 | longer conform to the ARM ELF ABI. */ | |
| 9971 | && (name[1] == 'd' || name[1] == 'x') | |
| 9972 | && (name[2] == 0 || name[2] == '.'); | |
| 9973 | /* FIXME: Strictly speaking the symbol is only a valid mapping symbol if | |
| 9974 | any characters that follow the period are legal characters for the body | |
| 9975 | of a symbol's name. For now we just assume that this is the case. */ | |
| 9976 | } | |
| 9977 | ||
| 9978 | /* Make sure that mapping symbols in object files are not removed via the | |
| 9979 | "strip --strip-unneeded" tool. These symbols might needed in order to | |
| 9980 | correctly generate linked files. Once an object file has been linked, | |
| 9981 | it should be safe to remove them. */ | |
| 9982 | ||
| 9983 | static void | |
| 9984 | elfNN_aarch64_backend_symbol_processing (bfd *abfd, asymbol *sym) | |
| 9985 | { | |
| 9986 | if (((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
| 9987 | && sym->section != bfd_abs_section_ptr | |
| 9988 | && is_aarch64_mapping_symbol (sym->name)) | |
| 9989 | sym->flags |= BSF_KEEP; | |
| 9990 | } | |
| 9991 | ||
| cd702818 SD |
9992 | /* Implement elf_backend_setup_gnu_properties for AArch64. It serves as a |
| 9993 | wrapper function for _bfd_aarch64_elf_link_setup_gnu_properties to account | |
| 9994 | for the effect of GNU properties of the output_bfd. */ | |
| 9995 | static bfd * | |
| 9996 | elfNN_aarch64_link_setup_gnu_properties (struct bfd_link_info *info) | |
| 9997 | { | |
| 9998 | uint32_t prop = elf_aarch64_tdata (info->output_bfd)->gnu_and_prop; | |
| 9999 | bfd *pbfd = _bfd_aarch64_elf_link_setup_gnu_properties (info, &prop); | |
| 10000 | elf_aarch64_tdata (info->output_bfd)->gnu_and_prop = prop; | |
| 37c18eed SD |
10001 | elf_aarch64_tdata (info->output_bfd)->plt_type |
| 10002 | |= (prop & GNU_PROPERTY_AARCH64_FEATURE_1_BTI) ? PLT_BTI : 0; | |
| 10003 | setup_plt_values (info, elf_aarch64_tdata (info->output_bfd)->plt_type); | |
| cd702818 SD |
10004 | return pbfd; |
| 10005 | } | |
| 10006 | ||
| 10007 | /* Implement elf_backend_merge_gnu_properties for AArch64. It serves as a | |
| 10008 | wrapper function for _bfd_aarch64_elf_merge_gnu_properties to account | |
| 10009 | for the effect of GNU properties of the output_bfd. */ | |
| 0a1b45a2 | 10010 | static bool |
| cd702818 | 10011 | elfNN_aarch64_merge_gnu_properties (struct bfd_link_info *info, |
| 4e539114 | 10012 | bfd *abfd, bfd *bbfd, |
| cd702818 SD |
10013 | elf_property *aprop, |
| 10014 | elf_property *bprop) | |
| 10015 | { | |
| 10016 | uint32_t prop | |
| 10017 | = elf_aarch64_tdata (info->output_bfd)->gnu_and_prop; | |
| 37c18eed SD |
10018 | |
| 10019 | /* If output has been marked with BTI using command line argument, give out | |
| 10020 | warning if necessary. */ | |
| 4e539114 SD |
10021 | /* Properties are merged per type, hence only check for warnings when merging |
| 10022 | GNU_PROPERTY_AARCH64_FEATURE_1_AND. */ | |
| 10023 | if (((aprop && aprop->pr_type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) | |
| 10024 | || (bprop && bprop->pr_type == GNU_PROPERTY_AARCH64_FEATURE_1_AND)) | |
| 10025 | && (prop & GNU_PROPERTY_AARCH64_FEATURE_1_BTI) | |
| 37c18eed SD |
10026 | && (!elf_aarch64_tdata (info->output_bfd)->no_bti_warn)) |
| 10027 | { | |
| 10028 | if ((aprop && !(aprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI)) | |
| 4e539114 | 10029 | || !aprop) |
| 37c18eed | 10030 | { |
| 8bf6d176 | 10031 | _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when " |
| 4e539114 SD |
10032 | "all inputs do not have BTI in NOTE section."), |
| 10033 | abfd); | |
| 10034 | } | |
| 10035 | if ((bprop && !(bprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI)) | |
| 10036 | || !bprop) | |
| 10037 | { | |
| 8bf6d176 | 10038 | _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when " |
| 4e539114 SD |
10039 | "all inputs do not have BTI in NOTE section."), |
| 10040 | bbfd); | |
| 37c18eed SD |
10041 | } |
| 10042 | } | |
| 10043 | ||
| cd702818 SD |
10044 | return _bfd_aarch64_elf_merge_gnu_properties (info, abfd, aprop, |
| 10045 | bprop, prop); | |
| 10046 | } | |
| a06ea964 NC |
10047 | |
| 10048 | /* We use this so we can override certain functions | |
| 10049 | (though currently we don't). */ | |
| 10050 | ||
| cec5225b | 10051 | const struct elf_size_info elfNN_aarch64_size_info = |
| a06ea964 | 10052 | { |
| cec5225b YZ |
10053 | sizeof (ElfNN_External_Ehdr), |
| 10054 | sizeof (ElfNN_External_Phdr), | |
| 10055 | sizeof (ElfNN_External_Shdr), | |
| 10056 | sizeof (ElfNN_External_Rel), | |
| 10057 | sizeof (ElfNN_External_Rela), | |
| 10058 | sizeof (ElfNN_External_Sym), | |
| 10059 | sizeof (ElfNN_External_Dyn), | |
| a06ea964 NC |
10060 | sizeof (Elf_External_Note), |
| 10061 | 4, /* Hash table entry size. */ | |
| 10062 | 1, /* Internal relocs per external relocs. */ | |
| cec5225b YZ |
10063 | ARCH_SIZE, /* Arch size. */ |
| 10064 | LOG_FILE_ALIGN, /* Log_file_align. */ | |
| 10065 | ELFCLASSNN, EV_CURRENT, | |
| 10066 | bfd_elfNN_write_out_phdrs, | |
| 10067 | bfd_elfNN_write_shdrs_and_ehdr, | |
| 10068 | bfd_elfNN_checksum_contents, | |
| 10069 | bfd_elfNN_write_relocs, | |
| 10070 | bfd_elfNN_swap_symbol_in, | |
| 10071 | bfd_elfNN_swap_symbol_out, | |
| 10072 | bfd_elfNN_slurp_reloc_table, | |
| 10073 | bfd_elfNN_slurp_symbol_table, | |
| 10074 | bfd_elfNN_swap_dyn_in, | |
| 10075 | bfd_elfNN_swap_dyn_out, | |
| 10076 | bfd_elfNN_swap_reloc_in, | |
| 10077 | bfd_elfNN_swap_reloc_out, | |
| 10078 | bfd_elfNN_swap_reloca_in, | |
| 10079 | bfd_elfNN_swap_reloca_out | |
| a06ea964 NC |
10080 | }; |
| 10081 | ||
| 10082 | #define ELF_ARCH bfd_arch_aarch64 | |
| 10083 | #define ELF_MACHINE_CODE EM_AARCH64 | |
| 10084 | #define ELF_MAXPAGESIZE 0x10000 | |
| a06ea964 NC |
10085 | #define ELF_COMMONPAGESIZE 0x1000 |
| 10086 | ||
| 07d6d2b8 | 10087 | #define bfd_elfNN_close_and_cleanup \ |
| cec5225b | 10088 | elfNN_aarch64_close_and_cleanup |
| a06ea964 | 10089 | |
| 07d6d2b8 | 10090 | #define bfd_elfNN_bfd_free_cached_info \ |
| cec5225b | 10091 | elfNN_aarch64_bfd_free_cached_info |
| a06ea964 | 10092 | |
| cec5225b YZ |
10093 | #define bfd_elfNN_bfd_is_target_special_symbol \ |
| 10094 | elfNN_aarch64_is_target_special_symbol | |
| a06ea964 | 10095 | |
| 07d6d2b8 | 10096 | #define bfd_elfNN_bfd_link_hash_table_create \ |
| cec5225b | 10097 | elfNN_aarch64_link_hash_table_create |
| a06ea964 | 10098 | |
| cec5225b YZ |
10099 | #define bfd_elfNN_bfd_merge_private_bfd_data \ |
| 10100 | elfNN_aarch64_merge_private_bfd_data | |
| a06ea964 | 10101 | |
| cec5225b YZ |
10102 | #define bfd_elfNN_bfd_print_private_bfd_data \ |
| 10103 | elfNN_aarch64_print_private_bfd_data | |
| a06ea964 | 10104 | |
| cec5225b YZ |
10105 | #define bfd_elfNN_bfd_reloc_type_lookup \ |
| 10106 | elfNN_aarch64_reloc_type_lookup | |
| a06ea964 | 10107 | |
| cec5225b YZ |
10108 | #define bfd_elfNN_bfd_reloc_name_lookup \ |
| 10109 | elfNN_aarch64_reloc_name_lookup | |
| a06ea964 | 10110 | |
| cec5225b YZ |
10111 | #define bfd_elfNN_bfd_set_private_flags \ |
| 10112 | elfNN_aarch64_set_private_flags | |
| a06ea964 | 10113 | |
| cec5225b YZ |
10114 | #define bfd_elfNN_find_inliner_info \ |
| 10115 | elfNN_aarch64_find_inliner_info | |
| a06ea964 | 10116 | |
| 37c18eed SD |
10117 | #define bfd_elfNN_get_synthetic_symtab \ |
| 10118 | elfNN_aarch64_get_synthetic_symtab | |
| 10119 | ||
| cec5225b YZ |
10120 | #define bfd_elfNN_mkobject \ |
| 10121 | elfNN_aarch64_mkobject | |
| a06ea964 | 10122 | |
| cec5225b YZ |
10123 | #define bfd_elfNN_new_section_hook \ |
| 10124 | elfNN_aarch64_new_section_hook | |
| a06ea964 NC |
10125 | |
| 10126 | #define elf_backend_adjust_dynamic_symbol \ | |
| cec5225b | 10127 | elfNN_aarch64_adjust_dynamic_symbol |
| a06ea964 NC |
10128 | |
| 10129 | #define elf_backend_always_size_sections \ | |
| cec5225b | 10130 | elfNN_aarch64_always_size_sections |
| a06ea964 NC |
10131 | |
| 10132 | #define elf_backend_check_relocs \ | |
| cec5225b | 10133 | elfNN_aarch64_check_relocs |
| a06ea964 NC |
10134 | |
| 10135 | #define elf_backend_copy_indirect_symbol \ | |
| cec5225b | 10136 | elfNN_aarch64_copy_indirect_symbol |
| a06ea964 | 10137 | |
| 823710d5 SN |
10138 | #define elf_backend_merge_symbol_attribute \ |
| 10139 | elfNN_aarch64_merge_symbol_attribute | |
| 10140 | ||
| a06ea964 NC |
10141 | /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts |
| 10142 | to them in our hash. */ | |
| 10143 | #define elf_backend_create_dynamic_sections \ | |
| cec5225b | 10144 | elfNN_aarch64_create_dynamic_sections |
| a06ea964 NC |
10145 | |
| 10146 | #define elf_backend_init_index_section \ | |
| 10147 | _bfd_elf_init_2_index_sections | |
| 10148 | ||
| a06ea964 | 10149 | #define elf_backend_finish_dynamic_sections \ |
| cec5225b | 10150 | elfNN_aarch64_finish_dynamic_sections |
| a06ea964 NC |
10151 | |
| 10152 | #define elf_backend_finish_dynamic_symbol \ | |
| cec5225b | 10153 | elfNN_aarch64_finish_dynamic_symbol |
| a06ea964 | 10154 | |
| a06ea964 | 10155 | #define elf_backend_object_p \ |
| cec5225b | 10156 | elfNN_aarch64_object_p |
| a06ea964 | 10157 | |
| 07d6d2b8 | 10158 | #define elf_backend_output_arch_local_syms \ |
| cec5225b | 10159 | elfNN_aarch64_output_arch_local_syms |
| a06ea964 | 10160 | |
| e7679060 AM |
10161 | #define elf_backend_maybe_function_sym \ |
| 10162 | elfNN_aarch64_maybe_function_sym | |
| 10163 | ||
| a06ea964 | 10164 | #define elf_backend_plt_sym_val \ |
| cec5225b | 10165 | elfNN_aarch64_plt_sym_val |
| a06ea964 | 10166 | |
| ed7e9d0b AM |
10167 | #define elf_backend_init_file_header \ |
| 10168 | elfNN_aarch64_init_file_header | |
| a06ea964 NC |
10169 | |
| 10170 | #define elf_backend_relocate_section \ | |
| cec5225b | 10171 | elfNN_aarch64_relocate_section |
| a06ea964 NC |
10172 | |
| 10173 | #define elf_backend_reloc_type_class \ | |
| cec5225b | 10174 | elfNN_aarch64_reloc_type_class |
| a06ea964 | 10175 | |
| a06ea964 | 10176 | #define elf_backend_section_from_shdr \ |
| cec5225b | 10177 | elfNN_aarch64_section_from_shdr |
| a06ea964 | 10178 | |
| d0ff5ca9 LM |
10179 | #define elf_backend_section_from_phdr \ |
| 10180 | elfNN_aarch64_section_from_phdr | |
| 10181 | ||
| 10182 | #define elf_backend_modify_headers \ | |
| 10183 | elfNN_aarch64_modify_headers | |
| 10184 | ||
| a06ea964 | 10185 | #define elf_backend_size_dynamic_sections \ |
| cec5225b | 10186 | elfNN_aarch64_size_dynamic_sections |
| a06ea964 NC |
10187 | |
| 10188 | #define elf_backend_size_info \ | |
| cec5225b | 10189 | elfNN_aarch64_size_info |
| a06ea964 | 10190 | |
| 68fcca92 JW |
10191 | #define elf_backend_write_section \ |
| 10192 | elfNN_aarch64_write_section | |
| 10193 | ||
| d691934d NC |
10194 | #define elf_backend_symbol_processing \ |
| 10195 | elfNN_aarch64_backend_symbol_processing | |
| 10196 | ||
| cd702818 SD |
10197 | #define elf_backend_setup_gnu_properties \ |
| 10198 | elfNN_aarch64_link_setup_gnu_properties | |
| 10199 | ||
| 10200 | #define elf_backend_merge_gnu_properties \ | |
| 10201 | elfNN_aarch64_merge_gnu_properties | |
| 10202 | ||
| a06ea964 | 10203 | #define elf_backend_can_refcount 1 |
| 59c108f7 | 10204 | #define elf_backend_can_gc_sections 1 |
| a06ea964 NC |
10205 | #define elf_backend_plt_readonly 1 |
| 10206 | #define elf_backend_want_got_plt 1 | |
| 10207 | #define elf_backend_want_plt_sym 0 | |
| 5474d94f | 10208 | #define elf_backend_want_dynrelro 1 |
| a06ea964 NC |
10209 | #define elf_backend_may_use_rel_p 0 |
| 10210 | #define elf_backend_may_use_rela_p 1 | |
| 10211 | #define elf_backend_default_use_rela_p 1 | |
| 07d6d2b8 | 10212 | #define elf_backend_rela_normal 1 |
| 64f52338 | 10213 | #define elf_backend_dtrel_excludes_plt 1 |
| a06ea964 | 10214 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3) |
| c495064d | 10215 | #define elf_backend_default_execstack 0 |
| 4fb55bf6 | 10216 | #define elf_backend_extern_protected_data 0 |
| 7f784814 | 10217 | #define elf_backend_hash_symbol elf_aarch64_hash_symbol |
| a06ea964 | 10218 | |
| 07d6d2b8 | 10219 | #undef elf_backend_obj_attrs_section |
| a06ea964 NC |
10220 | #define elf_backend_obj_attrs_section ".ARM.attributes" |
| 10221 | ||
| cec5225b | 10222 | #include "elfNN-target.h" |
| a75cf613 ES |
10223 | |
| 10224 | /* CloudABI support. */ | |
| 10225 | ||
| 10226 | #undef TARGET_LITTLE_SYM | |
| 10227 | #define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec | |
| 10228 | #undef TARGET_LITTLE_NAME | |
| 10229 | #define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi" | |
| 10230 | #undef TARGET_BIG_SYM | |
| 10231 | #define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec | |
| 10232 | #undef TARGET_BIG_NAME | |
| 10233 | #define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi" | |
| 10234 | ||
| 10235 | #undef ELF_OSABI | |
| 10236 | #define ELF_OSABI ELFOSABI_CLOUDABI | |
| 10237 | ||
| 10238 | #undef elfNN_bed | |
| 10239 | #define elfNN_bed elfNN_aarch64_cloudabi_bed | |
| 10240 | ||
| 10241 | #include "elfNN-target.h" |