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cec5225b | 1 | /* AArch64-specific support for NN-bit ELF. |
b3adc24a | 2 | Copyright (C) 2009-2020 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 */ |
6346d5ca | 445 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a6bb11b2 | 446 | 0, /* bitsize */ |
a06ea964 NC |
447 | FALSE, /* pc_relative */ |
448 | 0, /* bitpos */ | |
449 | complain_overflow_dont, /* complain_on_overflow */ | |
450 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 451 | "R_AARCH64_NULL", /* name */ |
a06ea964 NC |
452 | FALSE, /* partial_inplace */ |
453 | 0, /* src_mask */ | |
a6bb11b2 | 454 | 0, /* dst_mask */ |
a06ea964 | 455 | FALSE), /* pcrel_offset */ |
a6bb11b2 | 456 | HOWTO (R_AARCH64_NONE, /* type */ |
a06ea964 | 457 | 0, /* rightshift */ |
6346d5ca | 458 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a06ea964 NC |
459 | 0, /* bitsize */ |
460 | FALSE, /* pc_relative */ | |
461 | 0, /* bitpos */ | |
462 | complain_overflow_dont, /* complain_on_overflow */ | |
463 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 464 | "R_AARCH64_NONE", /* name */ |
a06ea964 NC |
465 | FALSE, /* partial_inplace */ |
466 | 0, /* src_mask */ | |
467 | 0, /* dst_mask */ | |
468 | FALSE), /* pcrel_offset */ | |
469 | ||
470 | /* .xword: (S+A) */ | |
a6bb11b2 | 471 | HOWTO64 (AARCH64_R (ABS64), /* type */ |
a06ea964 NC |
472 | 0, /* rightshift */ |
473 | 4, /* size (4 = long long) */ | |
474 | 64, /* bitsize */ | |
475 | FALSE, /* pc_relative */ | |
476 | 0, /* bitpos */ | |
477 | complain_overflow_unsigned, /* complain_on_overflow */ | |
478 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 479 | AARCH64_R_STR (ABS64), /* name */ |
a06ea964 NC |
480 | FALSE, /* partial_inplace */ |
481 | ALL_ONES, /* src_mask */ | |
482 | ALL_ONES, /* dst_mask */ | |
483 | FALSE), /* pcrel_offset */ | |
484 | ||
485 | /* .word: (S+A) */ | |
a6bb11b2 | 486 | HOWTO (AARCH64_R (ABS32), /* type */ |
a06ea964 NC |
487 | 0, /* rightshift */ |
488 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
489 | 32, /* bitsize */ | |
490 | FALSE, /* pc_relative */ | |
491 | 0, /* bitpos */ | |
492 | complain_overflow_unsigned, /* complain_on_overflow */ | |
493 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 494 | AARCH64_R_STR (ABS32), /* name */ |
a06ea964 NC |
495 | FALSE, /* partial_inplace */ |
496 | 0xffffffff, /* src_mask */ | |
497 | 0xffffffff, /* dst_mask */ | |
498 | FALSE), /* pcrel_offset */ | |
499 | ||
500 | /* .half: (S+A) */ | |
a6bb11b2 | 501 | HOWTO (AARCH64_R (ABS16), /* type */ |
a06ea964 NC |
502 | 0, /* rightshift */ |
503 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
504 | 16, /* bitsize */ | |
505 | FALSE, /* pc_relative */ | |
506 | 0, /* bitpos */ | |
507 | complain_overflow_unsigned, /* complain_on_overflow */ | |
508 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 509 | AARCH64_R_STR (ABS16), /* name */ |
a06ea964 NC |
510 | FALSE, /* partial_inplace */ |
511 | 0xffff, /* src_mask */ | |
512 | 0xffff, /* dst_mask */ | |
513 | FALSE), /* pcrel_offset */ | |
514 | ||
515 | /* .xword: (S+A-P) */ | |
a6bb11b2 | 516 | HOWTO64 (AARCH64_R (PREL64), /* type */ |
a06ea964 NC |
517 | 0, /* rightshift */ |
518 | 4, /* size (4 = long long) */ | |
519 | 64, /* bitsize */ | |
520 | TRUE, /* pc_relative */ | |
521 | 0, /* bitpos */ | |
522 | complain_overflow_signed, /* complain_on_overflow */ | |
523 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 524 | AARCH64_R_STR (PREL64), /* name */ |
a06ea964 NC |
525 | FALSE, /* partial_inplace */ |
526 | ALL_ONES, /* src_mask */ | |
527 | ALL_ONES, /* dst_mask */ | |
528 | TRUE), /* pcrel_offset */ | |
529 | ||
530 | /* .word: (S+A-P) */ | |
a6bb11b2 | 531 | HOWTO (AARCH64_R (PREL32), /* type */ |
a06ea964 NC |
532 | 0, /* rightshift */ |
533 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
534 | 32, /* bitsize */ | |
535 | TRUE, /* pc_relative */ | |
536 | 0, /* bitpos */ | |
537 | complain_overflow_signed, /* complain_on_overflow */ | |
538 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 539 | AARCH64_R_STR (PREL32), /* name */ |
a06ea964 NC |
540 | FALSE, /* partial_inplace */ |
541 | 0xffffffff, /* src_mask */ | |
542 | 0xffffffff, /* dst_mask */ | |
543 | TRUE), /* pcrel_offset */ | |
544 | ||
545 | /* .half: (S+A-P) */ | |
a6bb11b2 | 546 | HOWTO (AARCH64_R (PREL16), /* type */ |
a06ea964 NC |
547 | 0, /* rightshift */ |
548 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
549 | 16, /* bitsize */ | |
550 | TRUE, /* pc_relative */ | |
551 | 0, /* bitpos */ | |
552 | complain_overflow_signed, /* complain_on_overflow */ | |
553 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 554 | AARCH64_R_STR (PREL16), /* name */ |
a06ea964 NC |
555 | FALSE, /* partial_inplace */ |
556 | 0xffff, /* src_mask */ | |
557 | 0xffff, /* dst_mask */ | |
558 | TRUE), /* pcrel_offset */ | |
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 NC |
565 | 0, /* rightshift */ |
566 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
567 | 16, /* bitsize */ | |
568 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
573 | FALSE, /* partial_inplace */ |
574 | 0xffff, /* src_mask */ | |
575 | 0xffff, /* dst_mask */ | |
576 | FALSE), /* pcrel_offset */ | |
577 | ||
578 | /* MOVK: ((S+A) >> 0) & 0xffff [no overflow check] */ | |
a6bb11b2 | 579 | HOWTO (AARCH64_R (MOVW_UABS_G0_NC), /* type */ |
a06ea964 NC |
580 | 0, /* rightshift */ |
581 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
582 | 16, /* bitsize */ | |
583 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
588 | FALSE, /* partial_inplace */ |
589 | 0xffff, /* src_mask */ | |
590 | 0xffff, /* dst_mask */ | |
591 | FALSE), /* pcrel_offset */ | |
592 | ||
593 | /* MOVZ: ((S+A) >> 16) & 0xffff */ | |
a6bb11b2 | 594 | HOWTO (AARCH64_R (MOVW_UABS_G1), /* type */ |
a06ea964 NC |
595 | 16, /* rightshift */ |
596 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
597 | 16, /* bitsize */ | |
598 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
603 | FALSE, /* partial_inplace */ |
604 | 0xffff, /* src_mask */ | |
605 | 0xffff, /* dst_mask */ | |
606 | FALSE), /* pcrel_offset */ | |
607 | ||
608 | /* MOVK: ((S+A) >> 16) & 0xffff [no overflow check] */ | |
a6bb11b2 | 609 | HOWTO64 (AARCH64_R (MOVW_UABS_G1_NC), /* type */ |
a06ea964 NC |
610 | 16, /* rightshift */ |
611 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
612 | 16, /* bitsize */ | |
613 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
618 | FALSE, /* partial_inplace */ |
619 | 0xffff, /* src_mask */ | |
620 | 0xffff, /* dst_mask */ | |
621 | FALSE), /* pcrel_offset */ | |
622 | ||
623 | /* MOVZ: ((S+A) >> 32) & 0xffff */ | |
a6bb11b2 | 624 | HOWTO64 (AARCH64_R (MOVW_UABS_G2), /* type */ |
a06ea964 NC |
625 | 32, /* rightshift */ |
626 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
627 | 16, /* bitsize */ | |
628 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
633 | FALSE, /* partial_inplace */ |
634 | 0xffff, /* src_mask */ | |
635 | 0xffff, /* dst_mask */ | |
636 | FALSE), /* pcrel_offset */ | |
637 | ||
638 | /* MOVK: ((S+A) >> 32) & 0xffff [no overflow check] */ | |
a6bb11b2 | 639 | HOWTO64 (AARCH64_R (MOVW_UABS_G2_NC), /* type */ |
a06ea964 NC |
640 | 32, /* rightshift */ |
641 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
642 | 16, /* bitsize */ | |
643 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
648 | FALSE, /* partial_inplace */ |
649 | 0xffff, /* src_mask */ | |
650 | 0xffff, /* dst_mask */ | |
651 | FALSE), /* pcrel_offset */ | |
652 | ||
653 | /* MOVZ: ((S+A) >> 48) & 0xffff */ | |
a6bb11b2 | 654 | HOWTO64 (AARCH64_R (MOVW_UABS_G3), /* type */ |
a06ea964 NC |
655 | 48, /* rightshift */ |
656 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
657 | 16, /* bitsize */ | |
658 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
663 | FALSE, /* partial_inplace */ |
664 | 0xffff, /* src_mask */ | |
665 | 0xffff, /* dst_mask */ | |
666 | FALSE), /* pcrel_offset */ | |
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 NC |
674 | 0, /* rightshift */ |
675 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c5e3a364 | 676 | 17, /* bitsize */ |
a06ea964 NC |
677 | FALSE, /* pc_relative */ |
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 */ |
a06ea964 NC |
682 | FALSE, /* partial_inplace */ |
683 | 0xffff, /* src_mask */ | |
684 | 0xffff, /* dst_mask */ | |
685 | FALSE), /* pcrel_offset */ | |
686 | ||
687 | /* MOV[ZN]: ((S+A) >> 16) & 0xffff */ | |
a6bb11b2 | 688 | HOWTO64 (AARCH64_R (MOVW_SABS_G1), /* type */ |
a06ea964 NC |
689 | 16, /* rightshift */ |
690 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c5e3a364 | 691 | 17, /* bitsize */ |
a06ea964 NC |
692 | FALSE, /* pc_relative */ |
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 */ |
a06ea964 NC |
697 | FALSE, /* partial_inplace */ |
698 | 0xffff, /* src_mask */ | |
699 | 0xffff, /* dst_mask */ | |
700 | FALSE), /* pcrel_offset */ | |
701 | ||
702 | /* MOV[ZN]: ((S+A) >> 32) & 0xffff */ | |
a6bb11b2 | 703 | HOWTO64 (AARCH64_R (MOVW_SABS_G2), /* type */ |
a06ea964 NC |
704 | 32, /* rightshift */ |
705 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c5e3a364 | 706 | 17, /* bitsize */ |
a06ea964 NC |
707 | FALSE, /* pc_relative */ |
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 */ |
a06ea964 NC |
712 | FALSE, /* partial_inplace */ |
713 | 0xffff, /* src_mask */ | |
714 | 0xffff, /* dst_mask */ | |
715 | FALSE), /* pcrel_offset */ | |
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 RL |
722 | 0, /* rightshift */ |
723 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
724 | 17, /* bitsize */ | |
725 | TRUE, /* pc_relative */ | |
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 */ | |
730 | FALSE, /* partial_inplace */ | |
731 | 0xffff, /* src_mask */ | |
732 | 0xffff, /* dst_mask */ | |
733 | TRUE), /* pcrel_offset */ | |
734 | ||
735 | /* MOVK: ((S+A-P) >> 0) & 0xffff [no overflow check] */ | |
e30d1fa1 | 736 | HOWTO (AARCH64_R (MOVW_PREL_G0_NC), /* type */ |
32247401 RL |
737 | 0, /* rightshift */ |
738 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
739 | 16, /* bitsize */ | |
740 | TRUE, /* pc_relative */ | |
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 */ | |
745 | FALSE, /* partial_inplace */ | |
746 | 0xffff, /* src_mask */ | |
747 | 0xffff, /* dst_mask */ | |
748 | TRUE), /* pcrel_offset */ | |
749 | ||
750 | /* MOV[NZ]: ((S+A-P) >> 16) & 0xffff */ | |
e30d1fa1 | 751 | HOWTO (AARCH64_R (MOVW_PREL_G1), /* type */ |
32247401 RL |
752 | 16, /* rightshift */ |
753 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
754 | 17, /* bitsize */ | |
755 | TRUE, /* pc_relative */ | |
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 */ | |
760 | FALSE, /* partial_inplace */ | |
761 | 0xffff, /* src_mask */ | |
762 | 0xffff, /* dst_mask */ | |
763 | TRUE), /* pcrel_offset */ | |
764 | ||
765 | /* MOVK: ((S+A-P) >> 16) & 0xffff [no overflow check] */ | |
766 | HOWTO64 (AARCH64_R (MOVW_PREL_G1_NC), /* type */ | |
767 | 16, /* rightshift */ | |
768 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
769 | 16, /* bitsize */ | |
770 | TRUE, /* pc_relative */ | |
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 */ | |
775 | FALSE, /* partial_inplace */ | |
776 | 0xffff, /* src_mask */ | |
777 | 0xffff, /* dst_mask */ | |
778 | TRUE), /* pcrel_offset */ | |
779 | ||
780 | /* MOV[NZ]: ((S+A-P) >> 32) & 0xffff */ | |
781 | HOWTO64 (AARCH64_R (MOVW_PREL_G2), /* type */ | |
782 | 32, /* rightshift */ | |
783 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
784 | 17, /* bitsize */ | |
785 | TRUE, /* pc_relative */ | |
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 */ | |
790 | FALSE, /* partial_inplace */ | |
791 | 0xffff, /* src_mask */ | |
792 | 0xffff, /* dst_mask */ | |
793 | TRUE), /* pcrel_offset */ | |
794 | ||
795 | /* MOVK: ((S+A-P) >> 32) & 0xffff [no overflow check] */ | |
796 | HOWTO64 (AARCH64_R (MOVW_PREL_G2_NC), /* type */ | |
797 | 32, /* rightshift */ | |
798 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
799 | 16, /* bitsize */ | |
800 | TRUE, /* pc_relative */ | |
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 */ | |
805 | FALSE, /* partial_inplace */ | |
806 | 0xffff, /* src_mask */ | |
807 | 0xffff, /* dst_mask */ | |
808 | TRUE), /* pcrel_offset */ | |
809 | ||
810 | /* MOV[NZ]: ((S+A-P) >> 48) & 0xffff */ | |
811 | HOWTO64 (AARCH64_R (MOVW_PREL_G3), /* type */ | |
812 | 48, /* rightshift */ | |
813 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
814 | 16, /* bitsize */ | |
815 | TRUE, /* pc_relative */ | |
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 */ | |
820 | FALSE, /* partial_inplace */ | |
821 | 0xffff, /* src_mask */ | |
822 | 0xffff, /* dst_mask */ | |
823 | TRUE), /* pcrel_offset */ | |
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 NC |
830 | 2, /* rightshift */ |
831 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
832 | 19, /* bitsize */ | |
833 | TRUE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
838 | FALSE, /* partial_inplace */ |
839 | 0x7ffff, /* src_mask */ | |
840 | 0x7ffff, /* dst_mask */ | |
841 | TRUE), /* pcrel_offset */ | |
842 | ||
843 | /* ADR: (S+A-P) & 0x1fffff */ | |
a6bb11b2 | 844 | HOWTO (AARCH64_R (ADR_PREL_LO21), /* type */ |
a06ea964 NC |
845 | 0, /* rightshift */ |
846 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
847 | 21, /* bitsize */ | |
848 | TRUE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
853 | FALSE, /* partial_inplace */ |
854 | 0x1fffff, /* src_mask */ | |
855 | 0x1fffff, /* dst_mask */ | |
856 | TRUE), /* pcrel_offset */ | |
857 | ||
858 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
a6bb11b2 | 859 | HOWTO (AARCH64_R (ADR_PREL_PG_HI21), /* type */ |
a06ea964 NC |
860 | 12, /* rightshift */ |
861 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
862 | 21, /* bitsize */ | |
863 | TRUE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
868 | FALSE, /* partial_inplace */ |
869 | 0x1fffff, /* src_mask */ | |
870 | 0x1fffff, /* dst_mask */ | |
871 | TRUE), /* pcrel_offset */ | |
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 NC |
875 | 12, /* rightshift */ |
876 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
877 | 21, /* bitsize */ | |
878 | TRUE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
883 | FALSE, /* partial_inplace */ |
884 | 0x1fffff, /* src_mask */ | |
885 | 0x1fffff, /* dst_mask */ | |
886 | TRUE), /* pcrel_offset */ | |
887 | ||
888 | /* ADD: (S+A) & 0xfff [no overflow check] */ | |
a6bb11b2 | 889 | HOWTO (AARCH64_R (ADD_ABS_LO12_NC), /* type */ |
a06ea964 NC |
890 | 0, /* rightshift */ |
891 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
892 | 12, /* bitsize */ | |
893 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
898 | FALSE, /* partial_inplace */ |
899 | 0x3ffc00, /* src_mask */ | |
900 | 0x3ffc00, /* dst_mask */ | |
901 | FALSE), /* pcrel_offset */ | |
902 | ||
903 | /* LD/ST8: (S+A) & 0xfff */ | |
a6bb11b2 | 904 | HOWTO (AARCH64_R (LDST8_ABS_LO12_NC), /* type */ |
a06ea964 NC |
905 | 0, /* rightshift */ |
906 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
907 | 12, /* bitsize */ | |
908 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
913 | FALSE, /* partial_inplace */ |
914 | 0xfff, /* src_mask */ | |
915 | 0xfff, /* dst_mask */ | |
916 | FALSE), /* pcrel_offset */ | |
917 | ||
918 | /* Relocations for control-flow instructions. */ | |
919 | ||
920 | /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */ | |
a6bb11b2 | 921 | HOWTO (AARCH64_R (TSTBR14), /* type */ |
a06ea964 NC |
922 | 2, /* rightshift */ |
923 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
924 | 14, /* bitsize */ | |
925 | TRUE, /* pc_relative */ | |
926 | 0, /* bitpos */ | |
927 | complain_overflow_signed, /* complain_on_overflow */ | |
928 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 929 | AARCH64_R_STR (TSTBR14), /* name */ |
a06ea964 NC |
930 | FALSE, /* partial_inplace */ |
931 | 0x3fff, /* src_mask */ | |
932 | 0x3fff, /* dst_mask */ | |
933 | TRUE), /* pcrel_offset */ | |
934 | ||
935 | /* B.cond: ((S+A-P) >> 2) & 0x7ffff */ | |
a6bb11b2 | 936 | HOWTO (AARCH64_R (CONDBR19), /* type */ |
a06ea964 NC |
937 | 2, /* rightshift */ |
938 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
939 | 19, /* bitsize */ | |
940 | TRUE, /* pc_relative */ | |
941 | 0, /* bitpos */ | |
942 | complain_overflow_signed, /* complain_on_overflow */ | |
943 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 944 | AARCH64_R_STR (CONDBR19), /* name */ |
a06ea964 NC |
945 | FALSE, /* partial_inplace */ |
946 | 0x7ffff, /* src_mask */ | |
947 | 0x7ffff, /* dst_mask */ | |
948 | TRUE), /* pcrel_offset */ | |
949 | ||
a06ea964 | 950 | /* B: ((S+A-P) >> 2) & 0x3ffffff */ |
a6bb11b2 | 951 | HOWTO (AARCH64_R (JUMP26), /* type */ |
a06ea964 NC |
952 | 2, /* rightshift */ |
953 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
954 | 26, /* bitsize */ | |
955 | TRUE, /* pc_relative */ | |
956 | 0, /* bitpos */ | |
957 | complain_overflow_signed, /* complain_on_overflow */ | |
958 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 959 | AARCH64_R_STR (JUMP26), /* name */ |
a06ea964 NC |
960 | FALSE, /* partial_inplace */ |
961 | 0x3ffffff, /* src_mask */ | |
962 | 0x3ffffff, /* dst_mask */ | |
963 | TRUE), /* pcrel_offset */ | |
964 | ||
965 | /* BL: ((S+A-P) >> 2) & 0x3ffffff */ | |
a6bb11b2 | 966 | HOWTO (AARCH64_R (CALL26), /* type */ |
a06ea964 NC |
967 | 2, /* rightshift */ |
968 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
969 | 26, /* bitsize */ | |
970 | TRUE, /* pc_relative */ | |
971 | 0, /* bitpos */ | |
972 | complain_overflow_signed, /* complain_on_overflow */ | |
973 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 974 | AARCH64_R_STR (CALL26), /* name */ |
a06ea964 NC |
975 | FALSE, /* partial_inplace */ |
976 | 0x3ffffff, /* src_mask */ | |
977 | 0x3ffffff, /* dst_mask */ | |
978 | TRUE), /* pcrel_offset */ | |
979 | ||
980 | /* LD/ST16: (S+A) & 0xffe */ | |
a6bb11b2 | 981 | HOWTO (AARCH64_R (LDST16_ABS_LO12_NC), /* type */ |
a06ea964 NC |
982 | 1, /* rightshift */ |
983 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
984 | 12, /* bitsize */ | |
985 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
990 | FALSE, /* partial_inplace */ |
991 | 0xffe, /* src_mask */ | |
992 | 0xffe, /* dst_mask */ | |
993 | FALSE), /* pcrel_offset */ | |
994 | ||
995 | /* LD/ST32: (S+A) & 0xffc */ | |
a6bb11b2 | 996 | HOWTO (AARCH64_R (LDST32_ABS_LO12_NC), /* type */ |
a06ea964 NC |
997 | 2, /* rightshift */ |
998 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
999 | 12, /* bitsize */ | |
1000 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
1005 | FALSE, /* partial_inplace */ |
1006 | 0xffc, /* src_mask */ | |
1007 | 0xffc, /* dst_mask */ | |
1008 | FALSE), /* pcrel_offset */ | |
1009 | ||
1010 | /* LD/ST64: (S+A) & 0xff8 */ | |
a6bb11b2 | 1011 | HOWTO (AARCH64_R (LDST64_ABS_LO12_NC), /* type */ |
a06ea964 NC |
1012 | 3, /* rightshift */ |
1013 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1014 | 12, /* bitsize */ | |
1015 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
1020 | FALSE, /* partial_inplace */ |
1021 | 0xff8, /* src_mask */ | |
1022 | 0xff8, /* dst_mask */ | |
1023 | FALSE), /* pcrel_offset */ | |
1024 | ||
a06ea964 | 1025 | /* LD/ST128: (S+A) & 0xff0 */ |
a6bb11b2 | 1026 | HOWTO (AARCH64_R (LDST128_ABS_LO12_NC), /* type */ |
a06ea964 NC |
1027 | 4, /* rightshift */ |
1028 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1029 | 12, /* bitsize */ | |
1030 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
1035 | FALSE, /* partial_inplace */ |
1036 | 0xff0, /* src_mask */ | |
1037 | 0xff0, /* dst_mask */ | |
1038 | FALSE), /* pcrel_offset */ | |
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 RE |
1043 | 2, /* rightshift */ |
1044 | 2, /* size (0 = byte,1 = short,2 = long) */ | |
1045 | 19, /* bitsize */ | |
1046 | TRUE, /* pc_relative */ | |
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 */ |
f41aef5f RE |
1051 | FALSE, /* partial_inplace */ |
1052 | 0xffffe0, /* src_mask */ | |
1053 | 0xffffe0, /* dst_mask */ | |
1054 | TRUE), /* pcrel_offset */ | |
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 NC |
1059 | 12, /* rightshift */ |
1060 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1061 | 21, /* bitsize */ | |
1062 | TRUE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
1067 | FALSE, /* partial_inplace */ |
1068 | 0x1fffff, /* src_mask */ | |
1069 | 0x1fffff, /* dst_mask */ | |
1070 | TRUE), /* pcrel_offset */ | |
1071 | ||
a6bb11b2 YZ |
1072 | /* LD64: GOT offset G(S) & 0xff8 */ |
1073 | HOWTO64 (AARCH64_R (LD64_GOT_LO12_NC), /* type */ | |
a06ea964 NC |
1074 | 3, /* rightshift */ |
1075 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1076 | 12, /* bitsize */ | |
1077 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
1082 | FALSE, /* partial_inplace */ |
1083 | 0xff8, /* src_mask */ | |
1084 | 0xff8, /* dst_mask */ | |
a6bb11b2 | 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 */ | |
1090 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1091 | 12, /* bitsize */ | |
1092 | FALSE, /* pc_relative */ | |
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 */ | |
1097 | FALSE, /* partial_inplace */ | |
1098 | 0xffc, /* src_mask */ | |
1099 | 0xffc, /* dst_mask */ | |
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 */ | |
1105 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1106 | 16, /* bitsize */ | |
1107 | FALSE, /* pc_relative */ | |
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 */ | |
1112 | FALSE, /* partial_inplace */ | |
1113 | 0xffff, /* src_mask */ | |
1114 | 0xffff, /* dst_mask */ | |
1115 | FALSE), /* pcrel_offset */ | |
1116 | ||
654248e7 RL |
1117 | /* Higher 16 bits of GOT offset for the symbol. */ |
1118 | HOWTO64 (AARCH64_R (MOVW_GOTOFF_G1), /* type */ | |
1119 | 16, /* rightshift */ | |
1120 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1121 | 16, /* bitsize */ | |
1122 | FALSE, /* pc_relative */ | |
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 */ | |
1127 | FALSE, /* partial_inplace */ | |
1128 | 0xffff, /* src_mask */ | |
1129 | 0xffff, /* dst_mask */ | |
1130 | FALSE), /* pcrel_offset */ | |
1131 | ||
87f5fbcc RL |
1132 | /* LD64: GOT offset for the symbol. */ |
1133 | HOWTO64 (AARCH64_R (LD64_GOTOFF_LO15), /* type */ | |
1134 | 3, /* rightshift */ | |
1135 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1136 | 12, /* bitsize */ | |
1137 | FALSE, /* pc_relative */ | |
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 */ | |
1142 | FALSE, /* partial_inplace */ | |
1143 | 0x7ff8, /* src_mask */ | |
1144 | 0x7ff8, /* dst_mask */ | |
1145 | FALSE), /* pcrel_offset */ | |
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 */ | |
1151 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1152 | 12, /* bitsize */ | |
1153 | FALSE, /* pc_relative */ | |
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 */ | |
1158 | FALSE, /* partial_inplace */ | |
1159 | 0x5ffc, /* src_mask */ | |
1160 | 0x5ffc, /* dst_mask */ | |
1161 | FALSE), /* pcrel_offset */ | |
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 */ | |
1167 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1168 | 12, /* bitsize */ | |
1169 | FALSE, /* pc_relative */ | |
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 */ | |
1174 | FALSE, /* partial_inplace */ | |
1175 | 0x7ff8, /* src_mask */ | |
1176 | 0x7ff8, /* dst_mask */ | |
1177 | FALSE), /* pcrel_offset */ | |
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 NC |
1182 | 12, /* rightshift */ |
1183 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1184 | 21, /* bitsize */ | |
1185 | TRUE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
1190 | FALSE, /* partial_inplace */ |
1191 | 0x1fffff, /* src_mask */ | |
1192 | 0x1fffff, /* dst_mask */ | |
1193 | TRUE), /* pcrel_offset */ | |
1194 | ||
3c12b054 MS |
1195 | HOWTO (AARCH64_R (TLSGD_ADR_PREL21), /* type */ |
1196 | 0, /* rightshift */ | |
1197 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1198 | 21, /* bitsize */ | |
1199 | TRUE, /* pc_relative */ | |
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 */ | |
1204 | FALSE, /* partial_inplace */ | |
1205 | 0x1fffff, /* src_mask */ | |
1206 | 0x1fffff, /* dst_mask */ | |
1207 | TRUE), /* pcrel_offset */ | |
1208 | ||
a06ea964 | 1209 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ |
a6bb11b2 | 1210 | HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC), /* type */ |
a06ea964 NC |
1211 | 0, /* rightshift */ |
1212 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1213 | 12, /* bitsize */ | |
1214 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
1219 | FALSE, /* partial_inplace */ |
1220 | 0xfff, /* src_mask */ | |
1221 | 0xfff, /* dst_mask */ | |
1222 | FALSE), /* pcrel_offset */ | |
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 */ | |
1227 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1228 | 16, /* bitsize */ | |
1229 | FALSE, /* pc_relative */ | |
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 */ | |
1234 | FALSE, /* partial_inplace */ | |
1235 | 0xffff, /* src_mask */ | |
1236 | 0xffff, /* dst_mask */ | |
1237 | FALSE), /* pcrel_offset */ | |
1238 | ||
1aa66fb1 RL |
1239 | /* Higher 16 bits of GOT offset to tls_index. */ |
1240 | HOWTO64 (AARCH64_R (TLSGD_MOVW_G1), /* type */ | |
1241 | 16, /* rightshift */ | |
1242 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1243 | 16, /* bitsize */ | |
1244 | FALSE, /* pc_relative */ | |
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 */ | |
1249 | FALSE, /* partial_inplace */ | |
1250 | 0xffff, /* src_mask */ | |
1251 | 0xffff, /* dst_mask */ | |
1252 | FALSE), /* pcrel_offset */ | |
1253 | ||
a6bb11b2 | 1254 | HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21), /* type */ |
a06ea964 NC |
1255 | 12, /* rightshift */ |
1256 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1257 | 21, /* bitsize */ | |
1258 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
1263 | FALSE, /* partial_inplace */ |
1264 | 0x1fffff, /* src_mask */ | |
1265 | 0x1fffff, /* dst_mask */ | |
1266 | FALSE), /* pcrel_offset */ | |
1267 | ||
a6bb11b2 | 1268 | HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC), /* type */ |
a06ea964 NC |
1269 | 3, /* rightshift */ |
1270 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1271 | 12, /* bitsize */ | |
1272 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
1277 | FALSE, /* partial_inplace */ |
1278 | 0xff8, /* src_mask */ | |
1279 | 0xff8, /* dst_mask */ | |
1280 | FALSE), /* pcrel_offset */ | |
1281 | ||
a6bb11b2 YZ |
1282 | HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC), /* type */ |
1283 | 2, /* rightshift */ | |
1284 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1285 | 12, /* bitsize */ | |
1286 | FALSE, /* pc_relative */ | |
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 */ | |
1291 | FALSE, /* partial_inplace */ | |
1292 | 0xffc, /* src_mask */ | |
1293 | 0xffc, /* dst_mask */ | |
1294 | FALSE), /* pcrel_offset */ | |
1295 | ||
1296 | HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19), /* type */ | |
bb3f9ed8 | 1297 | 2, /* rightshift */ |
a06ea964 | 1298 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
043bf05a | 1299 | 19, /* bitsize */ |
a06ea964 NC |
1300 | FALSE, /* pc_relative */ |
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 */ |
a06ea964 NC |
1305 | FALSE, /* partial_inplace */ |
1306 | 0x1ffffc, /* src_mask */ | |
1307 | 0x1ffffc, /* dst_mask */ | |
1308 | FALSE), /* pcrel_offset */ | |
1309 | ||
3b957e5b RL |
1310 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */ |
1311 | 0, /* rightshift */ | |
1312 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1313 | 16, /* bitsize */ | |
1314 | FALSE, /* pc_relative */ | |
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 */ | |
1319 | FALSE, /* partial_inplace */ | |
1320 | 0xffff, /* src_mask */ | |
1321 | 0xffff, /* dst_mask */ | |
1322 | FALSE), /* pcrel_offset */ | |
1323 | ||
1324 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1), /* type */ | |
1325 | 16, /* rightshift */ | |
1326 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1327 | 16, /* bitsize */ | |
1328 | FALSE, /* pc_relative */ | |
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 */ | |
1333 | FALSE, /* partial_inplace */ | |
1334 | 0xffff, /* src_mask */ | |
1335 | 0xffff, /* dst_mask */ | |
1336 | FALSE), /* pcrel_offset */ | |
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 */ | |
1341 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1342 | 12, /* bitsize */ | |
1343 | FALSE, /* pc_relative */ | |
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 */ | |
1348 | FALSE, /* partial_inplace */ | |
1349 | 0xfff, /* src_mask */ | |
1350 | 0xfff, /* dst_mask */ | |
1351 | FALSE), /* pcrel_offset */ | |
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 */ | |
1356 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1357 | 12, /* bitsize */ | |
1358 | FALSE, /* pc_relative */ | |
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 */ | |
1363 | FALSE, /* partial_inplace */ | |
1364 | 0xfff, /* src_mask */ | |
1365 | 0xfff, /* dst_mask */ | |
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 */ | |
1371 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1372 | 12, /* bitsize */ | |
1373 | FALSE, /* pc_relative */ | |
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 */ | |
1378 | FALSE, /* partial_inplace */ | |
1379 | 0xfff, /* src_mask */ | |
1380 | 0xfff, /* dst_mask */ | |
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 */ | |
1386 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1387 | 12, /* bitsize */ | |
1388 | FALSE, /* pc_relative */ | |
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 */ | |
1393 | FALSE, /* partial_inplace */ | |
1394 | 0xfff, /* src_mask */ | |
1395 | 0xfff, /* dst_mask */ | |
1396 | FALSE), /* pcrel_offset */ | |
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 */ | |
1402 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1403 | 21, /* bitsize */ | |
1404 | TRUE, /* pc_relative */ | |
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 */ | |
1409 | FALSE, /* partial_inplace */ | |
1410 | 0x1fffff, /* src_mask */ | |
1411 | 0x1fffff, /* dst_mask */ | |
1412 | TRUE), /* pcrel_offset */ | |
1413 | ||
6c37fedc JW |
1414 | HOWTO (AARCH64_R (TLSLD_ADR_PREL21), /* type */ |
1415 | 0, /* rightshift */ | |
1416 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1417 | 21, /* bitsize */ | |
1418 | TRUE, /* pc_relative */ | |
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 */ | |
1423 | FALSE, /* partial_inplace */ | |
1424 | 0x1fffff, /* src_mask */ | |
1425 | 0x1fffff, /* dst_mask */ | |
1426 | TRUE), /* pcrel_offset */ | |
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 */ | |
1431 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1432 | 11, /* bitsize */ | |
1433 | FALSE, /* pc_relative */ | |
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 */ | |
1438 | FALSE, /* partial_inplace */ | |
1439 | 0x1ffc00, /* src_mask */ | |
1440 | 0x1ffc00, /* dst_mask */ | |
1441 | FALSE), /* pcrel_offset */ | |
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 */ | |
1446 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1447 | 11, /* bitsize */ | |
1448 | FALSE, /* pc_relative */ | |
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 */ | |
1453 | FALSE, /* partial_inplace */ | |
1454 | 0x1ffc00, /* src_mask */ | |
1455 | 0x1ffc00, /* dst_mask */ | |
1456 | FALSE), /* pcrel_offset */ | |
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 */ | |
1461 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1462 | 10, /* bitsize */ | |
1463 | FALSE, /* pc_relative */ | |
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 */ | |
1468 | FALSE, /* partial_inplace */ | |
1469 | 0x3ffc00, /* src_mask */ | |
1470 | 0x3ffc00, /* dst_mask */ | |
1471 | FALSE), /* pcrel_offset */ | |
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 */ | |
1476 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1477 | 10, /* bitsize */ | |
1478 | FALSE, /* pc_relative */ | |
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 */ | |
1483 | FALSE, /* partial_inplace */ | |
1484 | 0xffc00, /* src_mask */ | |
1485 | 0xffc00, /* dst_mask */ | |
1486 | FALSE), /* pcrel_offset */ | |
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 */ | |
1491 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1492 | 9, /* bitsize */ | |
1493 | FALSE, /* pc_relative */ | |
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 */ | |
1498 | FALSE, /* partial_inplace */ | |
1499 | 0x3ffc00, /* src_mask */ | |
1500 | 0x3ffc00, /* dst_mask */ | |
1501 | FALSE), /* pcrel_offset */ | |
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 */ | |
1506 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1507 | 9, /* bitsize */ | |
1508 | FALSE, /* pc_relative */ | |
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 */ | |
1513 | FALSE, /* partial_inplace */ | |
1514 | 0x7fc00, /* src_mask */ | |
1515 | 0x7fc00, /* dst_mask */ | |
1516 | FALSE), /* pcrel_offset */ | |
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 */ | |
1521 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1522 | 12, /* bitsize */ | |
1523 | FALSE, /* pc_relative */ | |
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 */ | |
1528 | FALSE, /* partial_inplace */ | |
1529 | 0x3ffc00, /* src_mask */ | |
1530 | 0x3ffc00, /* dst_mask */ | |
1531 | FALSE), /* pcrel_offset */ | |
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 */ | |
1536 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1537 | 12, /* bitsize */ | |
1538 | FALSE, /* pc_relative */ | |
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 */ | |
1543 | FALSE, /* partial_inplace */ | |
1544 | 0x3ffc00, /* src_mask */ | |
1545 | 0x3ffc00, /* dst_mask */ | |
1546 | FALSE), /* pcrel_offset */ | |
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 */ | |
1551 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1552 | 16, /* bitsize */ | |
1553 | FALSE, /* pc_relative */ | |
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 */ | |
1558 | FALSE, /* partial_inplace */ | |
1559 | 0xffff, /* src_mask */ | |
1560 | 0xffff, /* dst_mask */ | |
1561 | FALSE), /* pcrel_offset */ | |
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 */ | |
1566 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1567 | 16, /* bitsize */ | |
1568 | FALSE, /* pc_relative */ | |
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 */ | |
1573 | FALSE, /* partial_inplace */ | |
1574 | 0xffff, /* src_mask */ | |
1575 | 0xffff, /* dst_mask */ | |
1576 | FALSE), /* pcrel_offset */ | |
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 */ | |
1581 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1582 | 16, /* bitsize */ | |
1583 | FALSE, /* pc_relative */ | |
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 */ | |
1588 | FALSE, /* partial_inplace */ | |
1589 | 0xffff, /* src_mask */ | |
1590 | 0xffff, /* dst_mask */ | |
1591 | FALSE), /* pcrel_offset */ | |
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 */ | |
1596 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1597 | 16, /* bitsize */ | |
1598 | FALSE, /* pc_relative */ | |
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 */ | |
1603 | FALSE, /* partial_inplace */ | |
1604 | 0xffff, /* src_mask */ | |
1605 | 0xffff, /* dst_mask */ | |
1606 | FALSE), /* pcrel_offset */ | |
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 */ | |
1611 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1612 | 16, /* bitsize */ | |
1613 | FALSE, /* pc_relative */ | |
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 */ | |
1618 | FALSE, /* partial_inplace */ | |
1619 | 0xffff, /* src_mask */ | |
1620 | 0xffff, /* dst_mask */ | |
1621 | FALSE), /* pcrel_offset */ | |
1622 | ||
a6bb11b2 | 1623 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2), /* type */ |
bb3f9ed8 | 1624 | 32, /* rightshift */ |
a06ea964 | 1625 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1626 | 16, /* bitsize */ |
a06ea964 NC |
1627 | FALSE, /* pc_relative */ |
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 */ |
a06ea964 NC |
1632 | FALSE, /* partial_inplace */ |
1633 | 0xffff, /* src_mask */ | |
1634 | 0xffff, /* dst_mask */ | |
1635 | FALSE), /* pcrel_offset */ | |
1636 | ||
a6bb11b2 | 1637 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1), /* type */ |
bb3f9ed8 | 1638 | 16, /* rightshift */ |
a06ea964 | 1639 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1640 | 16, /* bitsize */ |
a06ea964 NC |
1641 | FALSE, /* pc_relative */ |
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 */ |
a06ea964 NC |
1646 | FALSE, /* partial_inplace */ |
1647 | 0xffff, /* src_mask */ | |
1648 | 0xffff, /* dst_mask */ | |
1649 | FALSE), /* pcrel_offset */ | |
1650 | ||
a6bb11b2 | 1651 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */ |
bb3f9ed8 | 1652 | 16, /* rightshift */ |
a06ea964 | 1653 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1654 | 16, /* bitsize */ |
a06ea964 NC |
1655 | FALSE, /* pc_relative */ |
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 */ |
a06ea964 NC |
1660 | FALSE, /* partial_inplace */ |
1661 | 0xffff, /* src_mask */ | |
1662 | 0xffff, /* dst_mask */ | |
1663 | FALSE), /* pcrel_offset */ | |
1664 | ||
a6bb11b2 | 1665 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0), /* type */ |
a06ea964 NC |
1666 | 0, /* rightshift */ |
1667 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
07875fbc | 1668 | 16, /* bitsize */ |
a06ea964 NC |
1669 | FALSE, /* pc_relative */ |
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 */ |
a06ea964 NC |
1674 | FALSE, /* partial_inplace */ |
1675 | 0xffff, /* src_mask */ | |
1676 | 0xffff, /* dst_mask */ | |
1677 | FALSE), /* pcrel_offset */ | |
1678 | ||
a6bb11b2 | 1679 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC), /* type */ |
a06ea964 NC |
1680 | 0, /* rightshift */ |
1681 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
07875fbc | 1682 | 16, /* bitsize */ |
a06ea964 NC |
1683 | FALSE, /* pc_relative */ |
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 */ |
a06ea964 NC |
1688 | FALSE, /* partial_inplace */ |
1689 | 0xffff, /* src_mask */ | |
1690 | 0xffff, /* dst_mask */ | |
1691 | FALSE), /* pcrel_offset */ | |
1692 | ||
a6bb11b2 | 1693 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12), /* type */ |
bb3f9ed8 | 1694 | 12, /* rightshift */ |
a06ea964 NC |
1695 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1696 | 12, /* bitsize */ | |
1697 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
1702 | FALSE, /* partial_inplace */ |
1703 | 0xfff, /* src_mask */ | |
1704 | 0xfff, /* dst_mask */ | |
1705 | FALSE), /* pcrel_offset */ | |
1706 | ||
a6bb11b2 | 1707 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12), /* type */ |
a06ea964 NC |
1708 | 0, /* rightshift */ |
1709 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1710 | 12, /* bitsize */ | |
1711 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
1716 | FALSE, /* partial_inplace */ |
1717 | 0xfff, /* src_mask */ | |
1718 | 0xfff, /* dst_mask */ | |
1719 | FALSE), /* pcrel_offset */ | |
1720 | ||
a6bb11b2 | 1721 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC), /* type */ |
a06ea964 NC |
1722 | 0, /* rightshift */ |
1723 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1724 | 12, /* bitsize */ | |
1725 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
1730 | FALSE, /* partial_inplace */ |
1731 | 0xfff, /* src_mask */ | |
1732 | 0xfff, /* dst_mask */ | |
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 */ | |
1738 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1739 | 11, /* bitsize */ | |
1740 | FALSE, /* pc_relative */ | |
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 */ | |
1745 | FALSE, /* partial_inplace */ | |
1746 | 0x1ffc00, /* src_mask */ | |
1747 | 0x1ffc00, /* dst_mask */ | |
1748 | FALSE), /* pcrel_offset */ | |
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 */ | |
1753 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1754 | 11, /* bitsize */ | |
1755 | FALSE, /* pc_relative */ | |
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 */ | |
1760 | FALSE, /* partial_inplace */ | |
1761 | 0x1ffc00, /* src_mask */ | |
1762 | 0x1ffc00, /* dst_mask */ | |
1763 | FALSE), /* pcrel_offset */ | |
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 */ | |
1768 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1769 | 10, /* bitsize */ | |
1770 | FALSE, /* pc_relative */ | |
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 */ | |
1775 | FALSE, /* partial_inplace */ | |
1776 | 0xffc00, /* src_mask */ | |
1777 | 0xffc00, /* dst_mask */ | |
1778 | FALSE), /* pcrel_offset */ | |
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 */ | |
1783 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1784 | 10, /* bitsize */ | |
1785 | FALSE, /* pc_relative */ | |
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 */ | |
1790 | FALSE, /* partial_inplace */ | |
1791 | 0xffc00, /* src_mask */ | |
1792 | 0xffc00, /* dst_mask */ | |
1793 | FALSE), /* pcrel_offset */ | |
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 */ | |
1798 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1799 | 9, /* bitsize */ | |
1800 | FALSE, /* pc_relative */ | |
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 */ | |
1805 | FALSE, /* partial_inplace */ | |
1806 | 0x7fc00, /* src_mask */ | |
1807 | 0x7fc00, /* dst_mask */ | |
1808 | FALSE), /* pcrel_offset */ | |
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 */ | |
1813 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1814 | 9, /* bitsize */ | |
1815 | FALSE, /* pc_relative */ | |
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 */ | |
1820 | FALSE, /* partial_inplace */ | |
1821 | 0x7fc00, /* src_mask */ | |
1822 | 0x7fc00, /* dst_mask */ | |
1823 | FALSE), /* pcrel_offset */ | |
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 */ | |
1828 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1829 | 12, /* bitsize */ | |
1830 | FALSE, /* pc_relative */ | |
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 */ | |
1835 | FALSE, /* partial_inplace */ | |
1836 | 0x3ffc00, /* src_mask */ | |
1837 | 0x3ffc00, /* dst_mask */ | |
1838 | FALSE), /* pcrel_offset */ | |
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 */ | |
1843 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1844 | 12, /* bitsize */ | |
1845 | FALSE, /* pc_relative */ | |
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 */ | |
1850 | FALSE, /* partial_inplace */ | |
1851 | 0x3ffc00, /* src_mask */ | |
1852 | 0x3ffc00, /* dst_mask */ | |
1853 | FALSE), /* pcrel_offset */ | |
1854 | ||
a6bb11b2 | 1855 | HOWTO (AARCH64_R (TLSDESC_LD_PREL19), /* type */ |
bb3f9ed8 | 1856 | 2, /* rightshift */ |
a06ea964 | 1857 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1ada945d | 1858 | 19, /* bitsize */ |
a06ea964 NC |
1859 | TRUE, /* pc_relative */ |
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 */ |
a06ea964 | 1864 | FALSE, /* partial_inplace */ |
1ada945d MS |
1865 | 0x0ffffe0, /* src_mask */ |
1866 | 0x0ffffe0, /* dst_mask */ | |
a06ea964 NC |
1867 | TRUE), /* pcrel_offset */ |
1868 | ||
a6bb11b2 | 1869 | HOWTO (AARCH64_R (TLSDESC_ADR_PREL21), /* type */ |
a06ea964 NC |
1870 | 0, /* rightshift */ |
1871 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1872 | 21, /* bitsize */ | |
1873 | TRUE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
1878 | FALSE, /* partial_inplace */ |
1879 | 0x1fffff, /* src_mask */ | |
1880 | 0x1fffff, /* dst_mask */ | |
1881 | TRUE), /* pcrel_offset */ | |
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 NC |
1886 | 12, /* rightshift */ |
1887 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1888 | 21, /* bitsize */ | |
1889 | TRUE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
1894 | FALSE, /* partial_inplace */ |
1895 | 0x1fffff, /* src_mask */ | |
1896 | 0x1fffff, /* dst_mask */ | |
1897 | TRUE), /* pcrel_offset */ | |
1898 | ||
a6bb11b2 | 1899 | /* LD64: GOT offset G(S) & 0xff8. */ |
f955cccf | 1900 | HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12), /* type */ |
a06ea964 NC |
1901 | 3, /* rightshift */ |
1902 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1903 | 12, /* bitsize */ | |
1904 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 | 1909 | FALSE, /* partial_inplace */ |
a6bb11b2 YZ |
1910 | 0xff8, /* src_mask */ |
1911 | 0xff8, /* dst_mask */ | |
1912 | FALSE), /* pcrel_offset */ | |
1913 | ||
1914 | /* LD32: GOT offset G(S) & 0xffc. */ | |
1915 | HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC), /* type */ | |
1916 | 2, /* rightshift */ | |
1917 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1918 | 12, /* bitsize */ | |
1919 | FALSE, /* pc_relative */ | |
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 */ | |
1924 | FALSE, /* partial_inplace */ | |
1925 | 0xffc, /* src_mask */ | |
1926 | 0xffc, /* dst_mask */ | |
a06ea964 NC |
1927 | FALSE), /* pcrel_offset */ |
1928 | ||
1929 | /* ADD: GOT offset G(S) & 0xfff. */ | |
f955cccf | 1930 | HOWTO (AARCH64_R (TLSDESC_ADD_LO12), /* type */ |
a06ea964 NC |
1931 | 0, /* rightshift */ |
1932 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1933 | 12, /* bitsize */ | |
1934 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
1939 | FALSE, /* partial_inplace */ |
1940 | 0xfff, /* src_mask */ | |
1941 | 0xfff, /* dst_mask */ | |
1942 | FALSE), /* pcrel_offset */ | |
1943 | ||
a6bb11b2 | 1944 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G1), /* type */ |
bb3f9ed8 | 1945 | 16, /* rightshift */ |
a06ea964 NC |
1946 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1947 | 12, /* bitsize */ | |
1948 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
1953 | FALSE, /* partial_inplace */ |
1954 | 0xffff, /* src_mask */ | |
1955 | 0xffff, /* dst_mask */ | |
1956 | FALSE), /* pcrel_offset */ | |
1957 | ||
a6bb11b2 | 1958 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC), /* type */ |
a06ea964 NC |
1959 | 0, /* rightshift */ |
1960 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1961 | 12, /* bitsize */ | |
1962 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
1967 | FALSE, /* partial_inplace */ |
1968 | 0xffff, /* src_mask */ | |
1969 | 0xffff, /* dst_mask */ | |
1970 | FALSE), /* pcrel_offset */ | |
1971 | ||
a6bb11b2 | 1972 | HOWTO64 (AARCH64_R (TLSDESC_LDR), /* type */ |
a06ea964 NC |
1973 | 0, /* rightshift */ |
1974 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1975 | 12, /* bitsize */ | |
1976 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
1981 | FALSE, /* partial_inplace */ |
1982 | 0x0, /* src_mask */ | |
1983 | 0x0, /* dst_mask */ | |
1984 | FALSE), /* pcrel_offset */ | |
1985 | ||
a6bb11b2 | 1986 | HOWTO64 (AARCH64_R (TLSDESC_ADD), /* type */ |
a06ea964 NC |
1987 | 0, /* rightshift */ |
1988 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1989 | 12, /* bitsize */ | |
1990 | FALSE, /* pc_relative */ | |
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 */ |
a06ea964 NC |
1995 | FALSE, /* partial_inplace */ |
1996 | 0x0, /* src_mask */ | |
1997 | 0x0, /* dst_mask */ | |
1998 | FALSE), /* pcrel_offset */ | |
1999 | ||
a6bb11b2 | 2000 | HOWTO (AARCH64_R (TLSDESC_CALL), /* type */ |
a06ea964 NC |
2001 | 0, /* rightshift */ |
2002 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
7366006f | 2003 | 0, /* bitsize */ |
a06ea964 NC |
2004 | FALSE, /* pc_relative */ |
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 */ |
a06ea964 NC |
2009 | FALSE, /* partial_inplace */ |
2010 | 0x0, /* src_mask */ | |
2011 | 0x0, /* dst_mask */ | |
2012 | FALSE), /* pcrel_offset */ | |
a6bb11b2 YZ |
2013 | |
2014 | HOWTO (AARCH64_R (COPY), /* type */ | |
2015 | 0, /* rightshift */ | |
2016 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2017 | 64, /* bitsize */ | |
2018 | FALSE, /* pc_relative */ | |
2019 | 0, /* bitpos */ | |
2020 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2021 | bfd_elf_generic_reloc, /* special_function */ | |
2022 | AARCH64_R_STR (COPY), /* name */ | |
2023 | TRUE, /* partial_inplace */ | |
2024 | 0xffffffff, /* src_mask */ | |
2025 | 0xffffffff, /* dst_mask */ | |
2026 | FALSE), /* pcrel_offset */ | |
2027 | ||
2028 | HOWTO (AARCH64_R (GLOB_DAT), /* type */ | |
2029 | 0, /* rightshift */ | |
2030 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2031 | 64, /* bitsize */ | |
2032 | FALSE, /* pc_relative */ | |
2033 | 0, /* bitpos */ | |
2034 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2035 | bfd_elf_generic_reloc, /* special_function */ | |
2036 | AARCH64_R_STR (GLOB_DAT), /* name */ | |
2037 | TRUE, /* partial_inplace */ | |
2038 | 0xffffffff, /* src_mask */ | |
2039 | 0xffffffff, /* dst_mask */ | |
2040 | FALSE), /* pcrel_offset */ | |
2041 | ||
2042 | HOWTO (AARCH64_R (JUMP_SLOT), /* type */ | |
2043 | 0, /* rightshift */ | |
2044 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2045 | 64, /* bitsize */ | |
2046 | FALSE, /* pc_relative */ | |
2047 | 0, /* bitpos */ | |
2048 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2049 | bfd_elf_generic_reloc, /* special_function */ | |
2050 | AARCH64_R_STR (JUMP_SLOT), /* name */ | |
2051 | TRUE, /* partial_inplace */ | |
2052 | 0xffffffff, /* src_mask */ | |
2053 | 0xffffffff, /* dst_mask */ | |
2054 | FALSE), /* pcrel_offset */ | |
2055 | ||
2056 | HOWTO (AARCH64_R (RELATIVE), /* type */ | |
2057 | 0, /* rightshift */ | |
2058 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2059 | 64, /* bitsize */ | |
2060 | FALSE, /* pc_relative */ | |
2061 | 0, /* bitpos */ | |
2062 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2063 | bfd_elf_generic_reloc, /* special_function */ | |
2064 | AARCH64_R_STR (RELATIVE), /* name */ | |
2065 | TRUE, /* partial_inplace */ | |
2066 | ALL_ONES, /* src_mask */ | |
2067 | ALL_ONES, /* dst_mask */ | |
2068 | FALSE), /* pcrel_offset */ | |
2069 | ||
2070 | HOWTO (AARCH64_R (TLS_DTPMOD), /* type */ | |
2071 | 0, /* rightshift */ | |
2072 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2073 | 64, /* bitsize */ | |
2074 | FALSE, /* pc_relative */ | |
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 |
a6bb11b2 YZ |
2083 | FALSE, /* partial_inplace */ |
2084 | 0, /* src_mask */ | |
2085 | ALL_ONES, /* dst_mask */ | |
2086 | FALSE), /* pc_reloffset */ | |
2087 | ||
2088 | HOWTO (AARCH64_R (TLS_DTPREL), /* type */ | |
2089 | 0, /* rightshift */ | |
2090 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2091 | 64, /* bitsize */ | |
2092 | FALSE, /* pc_relative */ | |
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 |
a6bb11b2 YZ |
2101 | FALSE, /* partial_inplace */ |
2102 | 0, /* src_mask */ | |
2103 | ALL_ONES, /* dst_mask */ | |
2104 | FALSE), /* pcrel_offset */ | |
2105 | ||
2106 | HOWTO (AARCH64_R (TLS_TPREL), /* type */ | |
2107 | 0, /* rightshift */ | |
2108 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2109 | 64, /* bitsize */ | |
2110 | FALSE, /* pc_relative */ | |
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 |
a6bb11b2 YZ |
2119 | FALSE, /* partial_inplace */ |
2120 | 0, /* src_mask */ | |
2121 | ALL_ONES, /* dst_mask */ | |
2122 | FALSE), /* pcrel_offset */ | |
2123 | ||
2124 | HOWTO (AARCH64_R (TLSDESC), /* type */ | |
2125 | 0, /* rightshift */ | |
2126 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2127 | 64, /* bitsize */ | |
2128 | FALSE, /* pc_relative */ | |
2129 | 0, /* bitpos */ | |
2130 | complain_overflow_dont, /* complain_on_overflow */ | |
2131 | bfd_elf_generic_reloc, /* special_function */ | |
2132 | AARCH64_R_STR (TLSDESC), /* name */ | |
2133 | FALSE, /* partial_inplace */ | |
2134 | 0, /* src_mask */ | |
2135 | ALL_ONES, /* dst_mask */ | |
2136 | FALSE), /* pcrel_offset */ | |
2137 | ||
2138 | HOWTO (AARCH64_R (IRELATIVE), /* type */ | |
2139 | 0, /* rightshift */ | |
2140 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2141 | 64, /* bitsize */ | |
2142 | FALSE, /* pc_relative */ | |
2143 | 0, /* bitpos */ | |
2144 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2145 | bfd_elf_generic_reloc, /* special_function */ | |
2146 | AARCH64_R_STR (IRELATIVE), /* name */ | |
2147 | FALSE, /* partial_inplace */ | |
2148 | 0, /* src_mask */ | |
2149 | ALL_ONES, /* dst_mask */ | |
2150 | FALSE), /* pcrel_offset */ | |
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 */ | |
6346d5ca | 2158 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a6bb11b2 YZ |
2159 | 0, /* bitsize */ |
2160 | FALSE, /* pc_relative */ | |
2161 | 0, /* bitpos */ | |
2162 | complain_overflow_dont,/* complain_on_overflow */ | |
2163 | bfd_elf_generic_reloc, /* special_function */ | |
2164 | "R_AARCH64_NONE", /* name */ | |
2165 | FALSE, /* partial_inplace */ | |
2166 | 0, /* src_mask */ | |
2167 | 0, /* dst_mask */ | |
2168 | FALSE); /* pcrel_offset */ | |
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 YZ |
2193 | { |
2194 | static bfd_boolean initialized_p = FALSE; | |
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 | ||
2206 | initialized_p = TRUE; | |
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 | ||
f3185997 | 2301 | static bfd_boolean |
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); | |
2314 | return FALSE; | |
2315 | } | |
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 | ||
2550 | static bfd_boolean | |
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 | ||
2573 | /* Track dynamic relocs copied for this symbol. */ | |
2574 | struct elf_dyn_relocs *dyn_relocs; | |
2575 | ||
a06ea964 NC |
2576 | /* Since PLT entries have variable size, we need to record the |
2577 | index into .got.plt instead of recomputing it from the PLT | |
2578 | offset. */ | |
2579 | bfd_signed_vma plt_got_offset; | |
2580 | ||
2581 | /* Bit mask representing the type of GOT entry(s) if any required by | |
2582 | this symbol. */ | |
2583 | unsigned int got_type; | |
2584 | ||
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 | /* Small local sym cache. */ |
2650 | struct sym_cache sym_cache; | |
2651 | ||
2652 | /* For convenience in allocate_dynrelocs. */ | |
2653 | bfd *obfd; | |
2654 | ||
2655 | /* The amount of space used by the reserved portion of the sgotplt | |
2656 | section, plus whatever space is used by the jump slots. */ | |
2657 | bfd_vma sgotplt_jump_table_size; | |
2658 | ||
2659 | /* The stub hash table. */ | |
2660 | struct bfd_hash_table stub_hash_table; | |
2661 | ||
2662 | /* Linker stub bfd. */ | |
2663 | bfd *stub_bfd; | |
2664 | ||
2665 | /* Linker call-backs. */ | |
2666 | asection *(*add_stub_section) (const char *, asection *); | |
2667 | void (*layout_sections_again) (void); | |
2668 | ||
2669 | /* Array to keep track of which stub sections have been created, and | |
2670 | information on stub grouping. */ | |
2671 | struct map_stub | |
2672 | { | |
2673 | /* This is the section to which stubs in the group will be | |
2674 | attached. */ | |
2675 | asection *link_sec; | |
2676 | /* The stub section. */ | |
2677 | asection *stub_sec; | |
2678 | } *stub_group; | |
2679 | ||
cec5225b | 2680 | /* Assorted information used by elfNN_aarch64_size_stubs. */ |
a06ea964 | 2681 | unsigned int bfd_count; |
7292b3ac | 2682 | unsigned int top_index; |
a06ea964 NC |
2683 | asection **input_list; |
2684 | ||
823710d5 SN |
2685 | /* JUMP_SLOT relocs for variant PCS symbols may be present. */ |
2686 | int variant_pcs; | |
2687 | ||
a06ea964 NC |
2688 | /* The offset into splt of the PLT entry for the TLS descriptor |
2689 | resolver. Special values are 0, if not necessary (or not found | |
2690 | to be necessary yet), and -1 if needed but not determined | |
2691 | yet. */ | |
2692 | bfd_vma tlsdesc_plt; | |
2693 | ||
37c18eed SD |
2694 | /* The number of bytes in the PLT enty for the TLS descriptor. */ |
2695 | bfd_size_type tlsdesc_plt_entry_size; | |
2696 | ||
a06ea964 NC |
2697 | /* The GOT offset for the lazy trampoline. Communicated to the |
2698 | loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1 | |
2699 | indicates an offset is not allocated. */ | |
2700 | bfd_vma dt_tlsdesc_got; | |
1419bbe5 WN |
2701 | |
2702 | /* Used by local STT_GNU_IFUNC symbols. */ | |
2703 | htab_t loc_hash_table; | |
2704 | void * loc_hash_memory; | |
a06ea964 NC |
2705 | }; |
2706 | ||
a06ea964 NC |
2707 | /* Create an entry in an AArch64 ELF linker hash table. */ |
2708 | ||
2709 | static struct bfd_hash_entry * | |
cec5225b | 2710 | elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry, |
a06ea964 NC |
2711 | struct bfd_hash_table *table, |
2712 | const char *string) | |
2713 | { | |
cec5225b YZ |
2714 | struct elf_aarch64_link_hash_entry *ret = |
2715 | (struct elf_aarch64_link_hash_entry *) entry; | |
a06ea964 NC |
2716 | |
2717 | /* Allocate the structure if it has not already been allocated by a | |
2718 | subclass. */ | |
2719 | if (ret == NULL) | |
2720 | ret = bfd_hash_allocate (table, | |
cec5225b | 2721 | sizeof (struct elf_aarch64_link_hash_entry)); |
a06ea964 NC |
2722 | if (ret == NULL) |
2723 | return (struct bfd_hash_entry *) ret; | |
2724 | ||
2725 | /* Call the allocation method of the superclass. */ | |
cec5225b | 2726 | ret = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
2727 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
2728 | table, string)); | |
2729 | if (ret != NULL) | |
2730 | { | |
2731 | ret->dyn_relocs = NULL; | |
a06ea964 NC |
2732 | ret->got_type = GOT_UNKNOWN; |
2733 | ret->plt_got_offset = (bfd_vma) - 1; | |
2734 | ret->stub_cache = NULL; | |
2735 | ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
2736 | } | |
2737 | ||
2738 | return (struct bfd_hash_entry *) ret; | |
2739 | } | |
2740 | ||
2741 | /* Initialize an entry in the stub hash table. */ | |
2742 | ||
2743 | static struct bfd_hash_entry * | |
2744 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
2745 | struct bfd_hash_table *table, const char *string) | |
2746 | { | |
2747 | /* Allocate the structure if it has not already been allocated by a | |
2748 | subclass. */ | |
2749 | if (entry == NULL) | |
2750 | { | |
2751 | entry = bfd_hash_allocate (table, | |
2752 | sizeof (struct | |
cec5225b | 2753 | elf_aarch64_stub_hash_entry)); |
a06ea964 NC |
2754 | if (entry == NULL) |
2755 | return entry; | |
2756 | } | |
2757 | ||
2758 | /* Call the allocation method of the superclass. */ | |
2759 | entry = bfd_hash_newfunc (entry, table, string); | |
2760 | if (entry != NULL) | |
2761 | { | |
cec5225b | 2762 | struct elf_aarch64_stub_hash_entry *eh; |
a06ea964 NC |
2763 | |
2764 | /* Initialize the local fields. */ | |
cec5225b | 2765 | eh = (struct elf_aarch64_stub_hash_entry *) entry; |
4106101c | 2766 | eh->adrp_offset = 0; |
a06ea964 NC |
2767 | eh->stub_sec = NULL; |
2768 | eh->stub_offset = 0; | |
2769 | eh->target_value = 0; | |
2770 | eh->target_section = NULL; | |
2771 | eh->stub_type = aarch64_stub_none; | |
2772 | eh->h = NULL; | |
2773 | eh->id_sec = NULL; | |
2774 | } | |
2775 | ||
2776 | return entry; | |
2777 | } | |
2778 | ||
1419bbe5 WN |
2779 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry |
2780 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
2781 | as global symbol. We reuse indx and dynstr_index for local symbol | |
2782 | hash since they aren't used by global symbols in this backend. */ | |
2783 | ||
2784 | static hashval_t | |
2785 | elfNN_aarch64_local_htab_hash (const void *ptr) | |
2786 | { | |
2787 | struct elf_link_hash_entry *h | |
2788 | = (struct elf_link_hash_entry *) ptr; | |
2789 | return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); | |
2790 | } | |
2791 | ||
2792 | /* Compare local hash entries. */ | |
2793 | ||
2794 | static int | |
2795 | elfNN_aarch64_local_htab_eq (const void *ptr1, const void *ptr2) | |
2796 | { | |
2797 | struct elf_link_hash_entry *h1 | |
2798 | = (struct elf_link_hash_entry *) ptr1; | |
2799 | struct elf_link_hash_entry *h2 | |
2800 | = (struct elf_link_hash_entry *) ptr2; | |
2801 | ||
2802 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
2803 | } | |
2804 | ||
2805 | /* Find and/or create a hash entry for local symbol. */ | |
2806 | ||
2807 | static struct elf_link_hash_entry * | |
2808 | elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table *htab, | |
2809 | bfd *abfd, const Elf_Internal_Rela *rel, | |
2810 | bfd_boolean create) | |
2811 | { | |
2812 | struct elf_aarch64_link_hash_entry e, *ret; | |
2813 | asection *sec = abfd->sections; | |
2814 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, | |
2815 | ELFNN_R_SYM (rel->r_info)); | |
2816 | void **slot; | |
2817 | ||
2818 | e.root.indx = sec->id; | |
2819 | e.root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2820 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, | |
2821 | create ? INSERT : NO_INSERT); | |
2822 | ||
2823 | if (!slot) | |
2824 | return NULL; | |
2825 | ||
2826 | if (*slot) | |
2827 | { | |
2828 | ret = (struct elf_aarch64_link_hash_entry *) *slot; | |
2829 | return &ret->root; | |
2830 | } | |
2831 | ||
2832 | ret = (struct elf_aarch64_link_hash_entry *) | |
2833 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, | |
2834 | sizeof (struct elf_aarch64_link_hash_entry)); | |
2835 | if (ret) | |
2836 | { | |
2837 | memset (ret, 0, sizeof (*ret)); | |
2838 | ret->root.indx = sec->id; | |
2839 | ret->root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2840 | ret->root.dynindx = -1; | |
2841 | *slot = ret; | |
2842 | } | |
2843 | return &ret->root; | |
2844 | } | |
a06ea964 NC |
2845 | |
2846 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
2847 | ||
2848 | static void | |
cec5225b | 2849 | elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info, |
a06ea964 NC |
2850 | struct elf_link_hash_entry *dir, |
2851 | struct elf_link_hash_entry *ind) | |
2852 | { | |
cec5225b | 2853 | struct elf_aarch64_link_hash_entry *edir, *eind; |
a06ea964 | 2854 | |
cec5225b YZ |
2855 | edir = (struct elf_aarch64_link_hash_entry *) dir; |
2856 | eind = (struct elf_aarch64_link_hash_entry *) ind; | |
a06ea964 NC |
2857 | |
2858 | if (eind->dyn_relocs != NULL) | |
2859 | { | |
2860 | if (edir->dyn_relocs != NULL) | |
2861 | { | |
2862 | struct elf_dyn_relocs **pp; | |
2863 | struct elf_dyn_relocs *p; | |
2864 | ||
2865 | /* Add reloc counts against the indirect sym to the direct sym | |
2866 | list. Merge any entries against the same section. */ | |
2867 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) | |
2868 | { | |
2869 | struct elf_dyn_relocs *q; | |
2870 | ||
2871 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
2872 | if (q->sec == p->sec) | |
2873 | { | |
2874 | q->pc_count += p->pc_count; | |
2875 | q->count += p->count; | |
2876 | *pp = p->next; | |
2877 | break; | |
2878 | } | |
2879 | if (q == NULL) | |
2880 | pp = &p->next; | |
2881 | } | |
2882 | *pp = edir->dyn_relocs; | |
2883 | } | |
2884 | ||
2885 | edir->dyn_relocs = eind->dyn_relocs; | |
2886 | eind->dyn_relocs = NULL; | |
2887 | } | |
2888 | ||
a06ea964 NC |
2889 | if (ind->root.type == bfd_link_hash_indirect) |
2890 | { | |
2891 | /* Copy over PLT info. */ | |
2892 | if (dir->got.refcount <= 0) | |
2893 | { | |
2894 | edir->got_type = eind->got_type; | |
2895 | eind->got_type = GOT_UNKNOWN; | |
2896 | } | |
2897 | } | |
2898 | ||
2899 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
2900 | } | |
2901 | ||
823710d5 SN |
2902 | /* Merge non-visibility st_other attributes. */ |
2903 | ||
2904 | static void | |
2905 | elfNN_aarch64_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
2906 | const Elf_Internal_Sym *isym, | |
2907 | bfd_boolean definition ATTRIBUTE_UNUSED, | |
2908 | bfd_boolean dynamic ATTRIBUTE_UNUSED) | |
2909 | { | |
2910 | unsigned int isym_sto = isym->st_other & ~ELF_ST_VISIBILITY (-1); | |
2911 | unsigned int h_sto = h->other & ~ELF_ST_VISIBILITY (-1); | |
2912 | ||
2913 | if (isym_sto == h_sto) | |
2914 | return; | |
2915 | ||
2916 | if (isym_sto & ~STO_AARCH64_VARIANT_PCS) | |
2917 | /* Not fatal, this callback cannot fail. */ | |
2918 | _bfd_error_handler (_("unknown attribute for symbol `%s': 0x%02x"), | |
2919 | h->root.root.string, isym_sto); | |
2920 | ||
2921 | /* Note: Ideally we would warn about any attribute mismatch, but | |
2922 | this api does not allow that without substantial changes. */ | |
2923 | if (isym_sto & STO_AARCH64_VARIANT_PCS) | |
2924 | h->other |= STO_AARCH64_VARIANT_PCS; | |
2925 | } | |
2926 | ||
68faa637 AM |
2927 | /* Destroy an AArch64 elf linker hash table. */ |
2928 | ||
2929 | static void | |
d495ab0d | 2930 | elfNN_aarch64_link_hash_table_free (bfd *obfd) |
68faa637 AM |
2931 | { |
2932 | struct elf_aarch64_link_hash_table *ret | |
d495ab0d | 2933 | = (struct elf_aarch64_link_hash_table *) obfd->link.hash; |
68faa637 AM |
2934 | |
2935 | if (ret->loc_hash_table) | |
2936 | htab_delete (ret->loc_hash_table); | |
2937 | if (ret->loc_hash_memory) | |
2938 | objalloc_free ((struct objalloc *) ret->loc_hash_memory); | |
2939 | ||
2940 | bfd_hash_table_free (&ret->stub_hash_table); | |
d495ab0d | 2941 | _bfd_elf_link_hash_table_free (obfd); |
68faa637 AM |
2942 | } |
2943 | ||
a06ea964 NC |
2944 | /* Create an AArch64 elf linker hash table. */ |
2945 | ||
2946 | static struct bfd_link_hash_table * | |
cec5225b | 2947 | elfNN_aarch64_link_hash_table_create (bfd *abfd) |
a06ea964 | 2948 | { |
cec5225b YZ |
2949 | struct elf_aarch64_link_hash_table *ret; |
2950 | bfd_size_type amt = sizeof (struct elf_aarch64_link_hash_table); | |
a06ea964 | 2951 | |
7bf52ea2 | 2952 | ret = bfd_zmalloc (amt); |
a06ea964 NC |
2953 | if (ret == NULL) |
2954 | return NULL; | |
2955 | ||
2956 | if (!_bfd_elf_link_hash_table_init | |
cec5225b YZ |
2957 | (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc, |
2958 | sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA)) | |
a06ea964 NC |
2959 | { |
2960 | free (ret); | |
2961 | return NULL; | |
2962 | } | |
2963 | ||
a06ea964 | 2964 | ret->plt_header_size = PLT_ENTRY_SIZE; |
37c18eed | 2965 | ret->plt0_entry = elfNN_aarch64_small_plt0_entry; |
a06ea964 | 2966 | ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE; |
37c18eed SD |
2967 | ret->plt_entry = elfNN_aarch64_small_plt_entry; |
2968 | ret->tlsdesc_plt_entry_size = PLT_TLSDESC_ENTRY_SIZE; | |
a06ea964 | 2969 | ret->obfd = abfd; |
a06ea964 NC |
2970 | ret->dt_tlsdesc_got = (bfd_vma) - 1; |
2971 | ||
2972 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc, | |
cec5225b | 2973 | sizeof (struct elf_aarch64_stub_hash_entry))) |
a06ea964 | 2974 | { |
d495ab0d | 2975 | _bfd_elf_link_hash_table_free (abfd); |
a06ea964 NC |
2976 | return NULL; |
2977 | } | |
2978 | ||
1419bbe5 WN |
2979 | ret->loc_hash_table = htab_try_create (1024, |
2980 | elfNN_aarch64_local_htab_hash, | |
2981 | elfNN_aarch64_local_htab_eq, | |
2982 | NULL); | |
2983 | ret->loc_hash_memory = objalloc_create (); | |
2984 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
2985 | { | |
d495ab0d | 2986 | elfNN_aarch64_link_hash_table_free (abfd); |
1419bbe5 WN |
2987 | return NULL; |
2988 | } | |
d495ab0d | 2989 | ret->root.root.hash_table_free = elfNN_aarch64_link_hash_table_free; |
1419bbe5 | 2990 | |
a06ea964 NC |
2991 | return &ret->root.root; |
2992 | } | |
2993 | ||
1d75a8e2 NC |
2994 | /* Perform relocation R_TYPE. Returns TRUE upon success, FALSE otherwise. */ |
2995 | ||
a06ea964 NC |
2996 | static bfd_boolean |
2997 | aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section, | |
2998 | bfd_vma offset, bfd_vma value) | |
2999 | { | |
3000 | reloc_howto_type *howto; | |
3001 | bfd_vma place; | |
3002 | ||
0aa13fee | 3003 | howto = elfNN_aarch64_howto_from_type (input_bfd, r_type); |
a06ea964 NC |
3004 | place = (input_section->output_section->vma + input_section->output_offset |
3005 | + offset); | |
caed7120 | 3006 | |
0aa13fee | 3007 | r_type = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
652afeef TC |
3008 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, r_type, place, |
3009 | value, 0, FALSE); | |
caed7120 YZ |
3010 | return _bfd_aarch64_elf_put_addend (input_bfd, |
3011 | input_section->contents + offset, r_type, | |
1d75a8e2 | 3012 | howto, value) == bfd_reloc_ok; |
a06ea964 NC |
3013 | } |
3014 | ||
cec5225b | 3015 | static enum elf_aarch64_stub_type |
a06ea964 NC |
3016 | aarch64_select_branch_stub (bfd_vma value, bfd_vma place) |
3017 | { | |
3018 | if (aarch64_valid_for_adrp_p (value, place)) | |
3019 | return aarch64_stub_adrp_branch; | |
3020 | return aarch64_stub_long_branch; | |
3021 | } | |
3022 | ||
3023 | /* Determine the type of stub needed, if any, for a call. */ | |
3024 | ||
cec5225b | 3025 | static enum elf_aarch64_stub_type |
9a228467 | 3026 | aarch64_type_of_stub (asection *input_sec, |
a06ea964 | 3027 | const Elf_Internal_Rela *rel, |
f678ded7 | 3028 | asection *sym_sec, |
a06ea964 | 3029 | unsigned char st_type, |
a06ea964 NC |
3030 | bfd_vma destination) |
3031 | { | |
3032 | bfd_vma location; | |
3033 | bfd_signed_vma branch_offset; | |
3034 | unsigned int r_type; | |
cec5225b | 3035 | enum elf_aarch64_stub_type stub_type = aarch64_stub_none; |
a06ea964 | 3036 | |
f678ded7 | 3037 | if (st_type != STT_FUNC |
2f340668 | 3038 | && (sym_sec == input_sec)) |
a06ea964 NC |
3039 | return stub_type; |
3040 | ||
a06ea964 NC |
3041 | /* Determine where the call point is. */ |
3042 | location = (input_sec->output_offset | |
3043 | + input_sec->output_section->vma + rel->r_offset); | |
3044 | ||
3045 | branch_offset = (bfd_signed_vma) (destination - location); | |
3046 | ||
cec5225b | 3047 | r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
3048 | |
3049 | /* We don't want to redirect any old unconditional jump in this way, | |
3050 | only one which is being used for a sibcall, where it is | |
3051 | acceptable for the IP0 and IP1 registers to be clobbered. */ | |
a6bb11b2 | 3052 | if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26)) |
a06ea964 NC |
3053 | && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET |
3054 | || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET)) | |
3055 | { | |
3056 | stub_type = aarch64_stub_long_branch; | |
3057 | } | |
3058 | ||
3059 | return stub_type; | |
3060 | } | |
3061 | ||
3062 | /* Build a name for an entry in the stub hash table. */ | |
3063 | ||
3064 | static char * | |
cec5225b | 3065 | elfNN_aarch64_stub_name (const asection *input_section, |
a06ea964 | 3066 | const asection *sym_sec, |
cec5225b | 3067 | const struct elf_aarch64_link_hash_entry *hash, |
a06ea964 NC |
3068 | const Elf_Internal_Rela *rel) |
3069 | { | |
3070 | char *stub_name; | |
3071 | bfd_size_type len; | |
3072 | ||
3073 | if (hash) | |
3074 | { | |
3075 | len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1; | |
3076 | stub_name = bfd_malloc (len); | |
3077 | if (stub_name != NULL) | |
3078 | snprintf (stub_name, len, "%08x_%s+%" BFD_VMA_FMT "x", | |
3079 | (unsigned int) input_section->id, | |
3080 | hash->root.root.root.string, | |
3081 | rel->r_addend); | |
3082 | } | |
3083 | else | |
3084 | { | |
3085 | len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1; | |
3086 | stub_name = bfd_malloc (len); | |
3087 | if (stub_name != NULL) | |
3088 | snprintf (stub_name, len, "%08x_%x:%x+%" BFD_VMA_FMT "x", | |
3089 | (unsigned int) input_section->id, | |
3090 | (unsigned int) sym_sec->id, | |
cec5225b | 3091 | (unsigned int) ELFNN_R_SYM (rel->r_info), |
a06ea964 NC |
3092 | rel->r_addend); |
3093 | } | |
3094 | ||
3095 | return stub_name; | |
3096 | } | |
3097 | ||
7f784814 JW |
3098 | /* Return TRUE if symbol H should be hashed in the `.gnu.hash' section. For |
3099 | executable PLT slots where the executable never takes the address of those | |
3100 | functions, the function symbols are not added to the hash table. */ | |
3101 | ||
3102 | static bfd_boolean | |
3103 | elf_aarch64_hash_symbol (struct elf_link_hash_entry *h) | |
3104 | { | |
3105 | if (h->plt.offset != (bfd_vma) -1 | |
3106 | && !h->def_regular | |
3107 | && !h->pointer_equality_needed) | |
3108 | return FALSE; | |
3109 | ||
3110 | return _bfd_elf_hash_symbol (h); | |
3111 | } | |
3112 | ||
3113 | ||
a06ea964 NC |
3114 | /* Look up an entry in the stub hash. Stub entries are cached because |
3115 | creating the stub name takes a bit of time. */ | |
3116 | ||
cec5225b YZ |
3117 | static struct elf_aarch64_stub_hash_entry * |
3118 | elfNN_aarch64_get_stub_entry (const asection *input_section, | |
a06ea964 NC |
3119 | const asection *sym_sec, |
3120 | struct elf_link_hash_entry *hash, | |
3121 | const Elf_Internal_Rela *rel, | |
cec5225b | 3122 | struct elf_aarch64_link_hash_table *htab) |
a06ea964 | 3123 | { |
cec5225b YZ |
3124 | struct elf_aarch64_stub_hash_entry *stub_entry; |
3125 | struct elf_aarch64_link_hash_entry *h = | |
3126 | (struct elf_aarch64_link_hash_entry *) hash; | |
a06ea964 NC |
3127 | const asection *id_sec; |
3128 | ||
3129 | if ((input_section->flags & SEC_CODE) == 0) | |
3130 | return NULL; | |
3131 | ||
3132 | /* If this input section is part of a group of sections sharing one | |
3133 | stub section, then use the id of the first section in the group. | |
3134 | Stub names need to include a section id, as there may well be | |
3135 | more than one stub used to reach say, printf, and we need to | |
3136 | distinguish between them. */ | |
3137 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3138 | ||
3139 | if (h != NULL && h->stub_cache != NULL | |
3140 | && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec) | |
3141 | { | |
3142 | stub_entry = h->stub_cache; | |
3143 | } | |
3144 | else | |
3145 | { | |
3146 | char *stub_name; | |
3147 | ||
cec5225b | 3148 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel); |
a06ea964 NC |
3149 | if (stub_name == NULL) |
3150 | return NULL; | |
3151 | ||
3152 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
3153 | stub_name, FALSE, FALSE); | |
3154 | if (h != NULL) | |
3155 | h->stub_cache = stub_entry; | |
3156 | ||
3157 | free (stub_name); | |
3158 | } | |
3159 | ||
3160 | return stub_entry; | |
3161 | } | |
3162 | ||
a06ea964 | 3163 | |
66585675 MS |
3164 | /* Create a stub section. */ |
3165 | ||
3166 | static asection * | |
3167 | _bfd_aarch64_create_stub_section (asection *section, | |
3168 | struct elf_aarch64_link_hash_table *htab) | |
3169 | { | |
3170 | size_t namelen; | |
3171 | bfd_size_type len; | |
3172 | char *s_name; | |
3173 | ||
3174 | namelen = strlen (section->name); | |
3175 | len = namelen + sizeof (STUB_SUFFIX); | |
3176 | s_name = bfd_alloc (htab->stub_bfd, len); | |
3177 | if (s_name == NULL) | |
3178 | return NULL; | |
3179 | ||
0db131fb TC |
3180 | /* PR 25210. Set the right class on the stub_bfd. */ |
3181 | elf_elfheader (htab->stub_bfd)->e_ident[EI_CLASS] = ELFCLASSNN; | |
3182 | BFD_ASSERT (ELFCLASSNN == get_elf_backend_data (htab->stub_bfd)->s->elfclass); | |
3183 | ||
66585675 MS |
3184 | memcpy (s_name, section->name, namelen); |
3185 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
3186 | return (*htab->add_stub_section) (s_name, section); | |
3187 | } | |
3188 | ||
3189 | ||
fc6d53be MS |
3190 | /* Find or create a stub section for a link section. |
3191 | ||
3192 | Fix or create the stub section used to collect stubs attached to | |
3193 | the specified link section. */ | |
3194 | ||
3195 | static asection * | |
3196 | _bfd_aarch64_get_stub_for_link_section (asection *link_section, | |
3197 | struct elf_aarch64_link_hash_table *htab) | |
3198 | { | |
3199 | if (htab->stub_group[link_section->id].stub_sec == NULL) | |
3200 | htab->stub_group[link_section->id].stub_sec | |
3201 | = _bfd_aarch64_create_stub_section (link_section, htab); | |
3202 | return htab->stub_group[link_section->id].stub_sec; | |
3203 | } | |
3204 | ||
3205 | ||
ef857521 MS |
3206 | /* Find or create a stub section in the stub group for an input |
3207 | section. */ | |
3208 | ||
3209 | static asection * | |
3210 | _bfd_aarch64_create_or_find_stub_sec (asection *section, | |
3211 | struct elf_aarch64_link_hash_table *htab) | |
a06ea964 | 3212 | { |
fc6d53be MS |
3213 | asection *link_sec = htab->stub_group[section->id].link_sec; |
3214 | return _bfd_aarch64_get_stub_for_link_section (link_sec, htab); | |
ef857521 MS |
3215 | } |
3216 | ||
3217 | ||
3218 | /* Add a new stub entry in the stub group associated with an input | |
3219 | section to the stub hash. Not all fields of the new stub entry are | |
3220 | initialised. */ | |
3221 | ||
3222 | static struct elf_aarch64_stub_hash_entry * | |
3223 | _bfd_aarch64_add_stub_entry_in_group (const char *stub_name, | |
3224 | asection *section, | |
3225 | struct elf_aarch64_link_hash_table *htab) | |
3226 | { | |
3227 | asection *link_sec; | |
3228 | asection *stub_sec; | |
3229 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
3230 | ||
3231 | link_sec = htab->stub_group[section->id].link_sec; | |
3232 | stub_sec = _bfd_aarch64_create_or_find_stub_sec (section, htab); | |
3233 | ||
a06ea964 NC |
3234 | /* Enter this entry into the linker stub hash table. */ |
3235 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
3236 | TRUE, FALSE); | |
3237 | if (stub_entry == NULL) | |
3238 | { | |
695344c0 | 3239 | /* xgettext:c-format */ |
871b3ab2 | 3240 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
4eca0228 | 3241 | section->owner, stub_name); |
a06ea964 NC |
3242 | return NULL; |
3243 | } | |
3244 | ||
3245 | stub_entry->stub_sec = stub_sec; | |
3246 | stub_entry->stub_offset = 0; | |
3247 | stub_entry->id_sec = link_sec; | |
3248 | ||
3249 | return stub_entry; | |
3250 | } | |
3251 | ||
4106101c MS |
3252 | /* Add a new stub entry in the final stub section to the stub hash. |
3253 | Not all fields of the new stub entry are initialised. */ | |
3254 | ||
3255 | static struct elf_aarch64_stub_hash_entry * | |
3256 | _bfd_aarch64_add_stub_entry_after (const char *stub_name, | |
3257 | asection *link_section, | |
3258 | struct elf_aarch64_link_hash_table *htab) | |
3259 | { | |
3260 | asection *stub_sec; | |
3261 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
3262 | ||
739b5c9c TC |
3263 | stub_sec = NULL; |
3264 | /* Only create the actual stub if we will end up needing it. */ | |
3265 | if (htab->fix_erratum_843419 & ERRAT_ADRP) | |
3266 | stub_sec = _bfd_aarch64_get_stub_for_link_section (link_section, htab); | |
4106101c MS |
3267 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, |
3268 | TRUE, FALSE); | |
3269 | if (stub_entry == NULL) | |
3270 | { | |
4eca0228 | 3271 | _bfd_error_handler (_("cannot create stub entry %s"), stub_name); |
4106101c MS |
3272 | return NULL; |
3273 | } | |
3274 | ||
3275 | stub_entry->stub_sec = stub_sec; | |
3276 | stub_entry->stub_offset = 0; | |
3277 | stub_entry->id_sec = link_section; | |
3278 | ||
3279 | return stub_entry; | |
3280 | } | |
3281 | ||
3282 | ||
a06ea964 NC |
3283 | static bfd_boolean |
3284 | aarch64_build_one_stub (struct bfd_hash_entry *gen_entry, | |
3285 | void *in_arg ATTRIBUTE_UNUSED) | |
3286 | { | |
cec5225b | 3287 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
3288 | asection *stub_sec; |
3289 | bfd *stub_bfd; | |
3290 | bfd_byte *loc; | |
3291 | bfd_vma sym_value; | |
68fcca92 JW |
3292 | bfd_vma veneered_insn_loc; |
3293 | bfd_vma veneer_entry_loc; | |
3294 | bfd_signed_vma branch_offset = 0; | |
a06ea964 NC |
3295 | unsigned int template_size; |
3296 | const uint32_t *template; | |
3297 | unsigned int i; | |
3298 | ||
3299 | /* Massage our args to the form they really have. */ | |
cec5225b | 3300 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
3301 | |
3302 | stub_sec = stub_entry->stub_sec; | |
3303 | ||
3304 | /* Make a note of the offset within the stubs for this entry. */ | |
3305 | stub_entry->stub_offset = stub_sec->size; | |
3306 | loc = stub_sec->contents + stub_entry->stub_offset; | |
3307 | ||
3308 | stub_bfd = stub_sec->owner; | |
3309 | ||
3310 | /* This is the address of the stub destination. */ | |
3311 | sym_value = (stub_entry->target_value | |
3312 | + stub_entry->target_section->output_offset | |
3313 | + stub_entry->target_section->output_section->vma); | |
3314 | ||
3315 | if (stub_entry->stub_type == aarch64_stub_long_branch) | |
3316 | { | |
3317 | bfd_vma place = (stub_entry->stub_offset + stub_sec->output_section->vma | |
3318 | + stub_sec->output_offset); | |
3319 | ||
3320 | /* See if we can relax the stub. */ | |
3321 | if (aarch64_valid_for_adrp_p (sym_value, place)) | |
3322 | stub_entry->stub_type = aarch64_select_branch_stub (sym_value, place); | |
3323 | } | |
3324 | ||
3325 | switch (stub_entry->stub_type) | |
3326 | { | |
3327 | case aarch64_stub_adrp_branch: | |
3328 | template = aarch64_adrp_branch_stub; | |
3329 | template_size = sizeof (aarch64_adrp_branch_stub); | |
3330 | break; | |
3331 | case aarch64_stub_long_branch: | |
3332 | template = aarch64_long_branch_stub; | |
3333 | template_size = sizeof (aarch64_long_branch_stub); | |
3334 | break; | |
68fcca92 JW |
3335 | case aarch64_stub_erratum_835769_veneer: |
3336 | template = aarch64_erratum_835769_stub; | |
3337 | template_size = sizeof (aarch64_erratum_835769_stub); | |
3338 | break; | |
4106101c MS |
3339 | case aarch64_stub_erratum_843419_veneer: |
3340 | template = aarch64_erratum_843419_stub; | |
3341 | template_size = sizeof (aarch64_erratum_843419_stub); | |
3342 | break; | |
a06ea964 | 3343 | default: |
8e2fe09f | 3344 | abort (); |
a06ea964 NC |
3345 | } |
3346 | ||
3347 | for (i = 0; i < (template_size / sizeof template[0]); i++) | |
3348 | { | |
3349 | bfd_putl32 (template[i], loc); | |
3350 | loc += 4; | |
3351 | } | |
3352 | ||
3353 | template_size = (template_size + 7) & ~7; | |
3354 | stub_sec->size += template_size; | |
3355 | ||
3356 | switch (stub_entry->stub_type) | |
3357 | { | |
3358 | case aarch64_stub_adrp_branch: | |
1d75a8e2 NC |
3359 | if (!aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21), stub_bfd, stub_sec, |
3360 | stub_entry->stub_offset, sym_value)) | |
a06ea964 NC |
3361 | /* The stub would not have been relaxed if the offset was out |
3362 | of range. */ | |
3363 | BFD_FAIL (); | |
3364 | ||
1d75a8e2 NC |
3365 | if (!aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC), stub_bfd, stub_sec, |
3366 | stub_entry->stub_offset + 4, sym_value)) | |
93ca8569 | 3367 | BFD_FAIL (); |
a06ea964 NC |
3368 | break; |
3369 | ||
3370 | case aarch64_stub_long_branch: | |
3371 | /* We want the value relative to the address 12 bytes back from the | |
07d6d2b8 | 3372 | value itself. */ |
1d75a8e2 NC |
3373 | if (!aarch64_relocate (AARCH64_R (PRELNN), stub_bfd, stub_sec, |
3374 | stub_entry->stub_offset + 16, sym_value + 12)) | |
93ca8569 | 3375 | BFD_FAIL (); |
a06ea964 | 3376 | break; |
68fcca92 JW |
3377 | |
3378 | case aarch64_stub_erratum_835769_veneer: | |
3379 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
3380 | + stub_entry->target_section->output_offset | |
3381 | + stub_entry->target_value; | |
3382 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
3383 | + stub_entry->stub_sec->output_offset | |
3384 | + stub_entry->stub_offset; | |
3385 | branch_offset = veneered_insn_loc - veneer_entry_loc; | |
3386 | branch_offset >>= 2; | |
3387 | branch_offset &= 0x3ffffff; | |
3388 | bfd_putl32 (stub_entry->veneered_insn, | |
3389 | stub_sec->contents + stub_entry->stub_offset); | |
3390 | bfd_putl32 (template[1] | branch_offset, | |
3391 | stub_sec->contents + stub_entry->stub_offset + 4); | |
3392 | break; | |
3393 | ||
4106101c | 3394 | case aarch64_stub_erratum_843419_veneer: |
1d75a8e2 NC |
3395 | if (!aarch64_relocate (AARCH64_R (JUMP26), stub_bfd, stub_sec, |
3396 | stub_entry->stub_offset + 4, sym_value + 4)) | |
4106101c MS |
3397 | BFD_FAIL (); |
3398 | break; | |
3399 | ||
a06ea964 | 3400 | default: |
8e2fe09f | 3401 | abort (); |
a06ea964 NC |
3402 | } |
3403 | ||
3404 | return TRUE; | |
3405 | } | |
3406 | ||
3407 | /* As above, but don't actually build the stub. Just bump offset so | |
3408 | we know stub section sizes. */ | |
3409 | ||
3410 | static bfd_boolean | |
739b5c9c | 3411 | aarch64_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
a06ea964 | 3412 | { |
cec5225b | 3413 | struct elf_aarch64_stub_hash_entry *stub_entry; |
739b5c9c | 3414 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
3415 | int size; |
3416 | ||
3417 | /* Massage our args to the form they really have. */ | |
cec5225b | 3418 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
739b5c9c | 3419 | htab = (struct elf_aarch64_link_hash_table *) in_arg; |
a06ea964 NC |
3420 | |
3421 | switch (stub_entry->stub_type) | |
3422 | { | |
3423 | case aarch64_stub_adrp_branch: | |
3424 | size = sizeof (aarch64_adrp_branch_stub); | |
3425 | break; | |
3426 | case aarch64_stub_long_branch: | |
3427 | size = sizeof (aarch64_long_branch_stub); | |
3428 | break; | |
68fcca92 JW |
3429 | case aarch64_stub_erratum_835769_veneer: |
3430 | size = sizeof (aarch64_erratum_835769_stub); | |
3431 | break; | |
4106101c | 3432 | case aarch64_stub_erratum_843419_veneer: |
739b5c9c TC |
3433 | { |
3434 | if (htab->fix_erratum_843419 == ERRAT_ADR) | |
3435 | return TRUE; | |
3436 | size = sizeof (aarch64_erratum_843419_stub); | |
3437 | } | |
4106101c | 3438 | break; |
a06ea964 | 3439 | default: |
8e2fe09f | 3440 | abort (); |
a06ea964 NC |
3441 | } |
3442 | ||
3443 | size = (size + 7) & ~7; | |
3444 | stub_entry->stub_sec->size += size; | |
3445 | return TRUE; | |
3446 | } | |
3447 | ||
3448 | /* External entry points for sizing and building linker stubs. */ | |
3449 | ||
3450 | /* Set up various things so that we can make a list of input sections | |
3451 | for each output section included in the link. Returns -1 on error, | |
3452 | 0 when no stubs will be needed, and 1 on success. */ | |
3453 | ||
3454 | int | |
cec5225b | 3455 | elfNN_aarch64_setup_section_lists (bfd *output_bfd, |
a06ea964 NC |
3456 | struct bfd_link_info *info) |
3457 | { | |
3458 | bfd *input_bfd; | |
3459 | unsigned int bfd_count; | |
7292b3ac | 3460 | unsigned int top_id, top_index; |
a06ea964 NC |
3461 | asection *section; |
3462 | asection **input_list, **list; | |
3463 | bfd_size_type amt; | |
cec5225b YZ |
3464 | struct elf_aarch64_link_hash_table *htab = |
3465 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
3466 | |
3467 | if (!is_elf_hash_table (htab)) | |
3468 | return 0; | |
3469 | ||
3470 | /* Count the number of input BFDs and find the top input section id. */ | |
3471 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
c72f2fb2 | 3472 | input_bfd != NULL; input_bfd = input_bfd->link.next) |
a06ea964 NC |
3473 | { |
3474 | bfd_count += 1; | |
3475 | for (section = input_bfd->sections; | |
3476 | section != NULL; section = section->next) | |
3477 | { | |
3478 | if (top_id < section->id) | |
3479 | top_id = section->id; | |
3480 | } | |
3481 | } | |
3482 | htab->bfd_count = bfd_count; | |
3483 | ||
3484 | amt = sizeof (struct map_stub) * (top_id + 1); | |
3485 | htab->stub_group = bfd_zmalloc (amt); | |
3486 | if (htab->stub_group == NULL) | |
3487 | return -1; | |
3488 | ||
3489 | /* We can't use output_bfd->section_count here to find the top output | |
3490 | section index as some sections may have been removed, and | |
3491 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
3492 | for (section = output_bfd->sections, top_index = 0; | |
3493 | section != NULL; section = section->next) | |
3494 | { | |
3495 | if (top_index < section->index) | |
3496 | top_index = section->index; | |
3497 | } | |
3498 | ||
3499 | htab->top_index = top_index; | |
3500 | amt = sizeof (asection *) * (top_index + 1); | |
3501 | input_list = bfd_malloc (amt); | |
3502 | htab->input_list = input_list; | |
3503 | if (input_list == NULL) | |
3504 | return -1; | |
3505 | ||
3506 | /* For sections we aren't interested in, mark their entries with a | |
3507 | value we can check later. */ | |
3508 | list = input_list + top_index; | |
3509 | do | |
3510 | *list = bfd_abs_section_ptr; | |
3511 | while (list-- != input_list); | |
3512 | ||
3513 | for (section = output_bfd->sections; | |
3514 | section != NULL; section = section->next) | |
3515 | { | |
3516 | if ((section->flags & SEC_CODE) != 0) | |
3517 | input_list[section->index] = NULL; | |
3518 | } | |
3519 | ||
3520 | return 1; | |
3521 | } | |
3522 | ||
cec5225b | 3523 | /* Used by elfNN_aarch64_next_input_section and group_sections. */ |
a06ea964 NC |
3524 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3525 | ||
3526 | /* The linker repeatedly calls this function for each input section, | |
3527 | in the order that input sections are linked into output sections. | |
3528 | Build lists of input sections to determine groupings between which | |
3529 | we may insert linker stubs. */ | |
3530 | ||
3531 | void | |
cec5225b | 3532 | elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec) |
a06ea964 | 3533 | { |
cec5225b YZ |
3534 | struct elf_aarch64_link_hash_table *htab = |
3535 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
3536 | |
3537 | if (isec->output_section->index <= htab->top_index) | |
3538 | { | |
3539 | asection **list = htab->input_list + isec->output_section->index; | |
3540 | ||
3541 | if (*list != bfd_abs_section_ptr) | |
3542 | { | |
3543 | /* Steal the link_sec pointer for our list. */ | |
3544 | /* This happens to make the list in reverse order, | |
3545 | which is what we want. */ | |
3546 | PREV_SEC (isec) = *list; | |
3547 | *list = isec; | |
3548 | } | |
3549 | } | |
3550 | } | |
3551 | ||
3552 | /* See whether we can group stub sections together. Grouping stub | |
3553 | sections may result in fewer stubs. More importantly, we need to | |
3554 | put all .init* and .fini* stubs at the beginning of the .init or | |
3555 | .fini output sections respectively, because glibc splits the | |
3556 | _init and _fini functions into multiple parts. Putting a stub in | |
3557 | the middle of a function is not a good idea. */ | |
3558 | ||
3559 | static void | |
cec5225b | 3560 | group_sections (struct elf_aarch64_link_hash_table *htab, |
a06ea964 NC |
3561 | bfd_size_type stub_group_size, |
3562 | bfd_boolean stubs_always_before_branch) | |
3563 | { | |
3564 | asection **list = htab->input_list + htab->top_index; | |
3565 | ||
3566 | do | |
3567 | { | |
3568 | asection *tail = *list; | |
3569 | ||
3570 | if (tail == bfd_abs_section_ptr) | |
3571 | continue; | |
3572 | ||
3573 | while (tail != NULL) | |
3574 | { | |
3575 | asection *curr; | |
3576 | asection *prev; | |
3577 | bfd_size_type total; | |
3578 | ||
3579 | curr = tail; | |
3580 | total = tail->size; | |
3581 | while ((prev = PREV_SEC (curr)) != NULL | |
3582 | && ((total += curr->output_offset - prev->output_offset) | |
3583 | < stub_group_size)) | |
3584 | curr = prev; | |
3585 | ||
3586 | /* OK, the size from the start of CURR to the end is less | |
3587 | than stub_group_size and thus can be handled by one stub | |
3588 | section. (Or the tail section is itself larger than | |
3589 | stub_group_size, in which case we may be toast.) | |
3590 | We should really be keeping track of the total size of | |
3591 | stubs added here, as stubs contribute to the final output | |
3592 | section size. */ | |
3593 | do | |
3594 | { | |
3595 | prev = PREV_SEC (tail); | |
3596 | /* Set up this stub group. */ | |
3597 | htab->stub_group[tail->id].link_sec = curr; | |
3598 | } | |
3599 | while (tail != curr && (tail = prev) != NULL); | |
3600 | ||
3601 | /* But wait, there's more! Input sections up to stub_group_size | |
3602 | bytes before the stub section can be handled by it too. */ | |
3603 | if (!stubs_always_before_branch) | |
3604 | { | |
3605 | total = 0; | |
3606 | while (prev != NULL | |
3607 | && ((total += tail->output_offset - prev->output_offset) | |
3608 | < stub_group_size)) | |
3609 | { | |
3610 | tail = prev; | |
3611 | prev = PREV_SEC (tail); | |
3612 | htab->stub_group[tail->id].link_sec = curr; | |
3613 | } | |
3614 | } | |
3615 | tail = prev; | |
3616 | } | |
3617 | } | |
3618 | while (list-- != htab->input_list); | |
3619 | ||
3620 | free (htab->input_list); | |
3621 | } | |
3622 | ||
3623 | #undef PREV_SEC | |
3624 | ||
68fcca92 JW |
3625 | #define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1)) |
3626 | ||
3627 | #define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5) | |
3628 | #define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5) | |
3629 | #define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5) | |
3630 | #define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5) | |
3631 | #define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5) | |
3632 | #define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5) | |
3633 | ||
3634 | #define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000) | |
3635 | #define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1) | |
3636 | #define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3) | |
3637 | #define AARCH64_ZR 0x1f | |
3638 | ||
3639 | /* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for | |
3640 | LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */ | |
3641 | ||
3642 | #define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1) | |
3643 | #define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000) | |
3644 | #define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000) | |
3645 | #define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000) | |
3646 | #define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000) | |
3647 | #define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000) | |
3648 | #define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000) | |
3649 | #define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000) | |
3650 | #define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000) | |
3651 | #define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400) | |
3652 | #define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800) | |
3653 | #define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00) | |
3654 | #define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800) | |
3655 | #define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000) | |
3656 | #define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000) | |
3657 | #define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000) | |
3658 | #define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000) | |
3659 | #define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000) | |
3660 | ||
3d14faea MS |
3661 | /* Classify an INSN if it is indeed a load/store. |
3662 | ||
3663 | Return TRUE if INSN is a LD/ST instruction otherwise return FALSE. | |
3664 | ||
3665 | For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2 | |
3666 | is set equal to RT. | |
3667 | ||
2d0ca824 | 3668 | For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. */ |
68fcca92 JW |
3669 | |
3670 | static bfd_boolean | |
3d14faea | 3671 | aarch64_mem_op_p (uint32_t insn, unsigned int *rt, unsigned int *rt2, |
68fcca92 JW |
3672 | bfd_boolean *pair, bfd_boolean *load) |
3673 | { | |
3674 | uint32_t opcode; | |
3675 | unsigned int r; | |
3676 | uint32_t opc = 0; | |
3677 | uint32_t v = 0; | |
3678 | uint32_t opc_v = 0; | |
3679 | ||
de194d85 | 3680 | /* Bail out quickly if INSN doesn't fall into the load-store |
68fcca92 JW |
3681 | encoding space. */ |
3682 | if (!AARCH64_LDST (insn)) | |
3683 | return FALSE; | |
3684 | ||
3685 | *pair = FALSE; | |
3686 | *load = FALSE; | |
3687 | if (AARCH64_LDST_EX (insn)) | |
3688 | { | |
3689 | *rt = AARCH64_RT (insn); | |
3d14faea | 3690 | *rt2 = *rt; |
68fcca92 | 3691 | if (AARCH64_BIT (insn, 21) == 1) |
07d6d2b8 | 3692 | { |
68fcca92 | 3693 | *pair = TRUE; |
3d14faea | 3694 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
3695 | } |
3696 | *load = AARCH64_LD (insn); | |
3697 | return TRUE; | |
3698 | } | |
3699 | else if (AARCH64_LDST_NAP (insn) | |
3700 | || AARCH64_LDSTP_PI (insn) | |
3701 | || AARCH64_LDSTP_O (insn) | |
3702 | || AARCH64_LDSTP_PRE (insn)) | |
3703 | { | |
3704 | *pair = TRUE; | |
3705 | *rt = AARCH64_RT (insn); | |
3d14faea | 3706 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
3707 | *load = AARCH64_LD (insn); |
3708 | return TRUE; | |
3709 | } | |
3710 | else if (AARCH64_LDST_PCREL (insn) | |
3711 | || AARCH64_LDST_UI (insn) | |
3712 | || AARCH64_LDST_PIIMM (insn) | |
3713 | || AARCH64_LDST_U (insn) | |
3714 | || AARCH64_LDST_PREIMM (insn) | |
3715 | || AARCH64_LDST_RO (insn) | |
3716 | || AARCH64_LDST_UIMM (insn)) | |
3717 | { | |
3718 | *rt = AARCH64_RT (insn); | |
3d14faea | 3719 | *rt2 = *rt; |
68fcca92 JW |
3720 | if (AARCH64_LDST_PCREL (insn)) |
3721 | *load = TRUE; | |
3722 | opc = AARCH64_BITS (insn, 22, 2); | |
3723 | v = AARCH64_BIT (insn, 26); | |
3724 | opc_v = opc | (v << 2); | |
3725 | *load = (opc_v == 1 || opc_v == 2 || opc_v == 3 | |
3726 | || opc_v == 5 || opc_v == 7); | |
3727 | return TRUE; | |
3728 | } | |
3729 | else if (AARCH64_LDST_SIMD_M (insn) | |
3730 | || AARCH64_LDST_SIMD_M_PI (insn)) | |
3731 | { | |
3732 | *rt = AARCH64_RT (insn); | |
3733 | *load = AARCH64_BIT (insn, 22); | |
3734 | opcode = (insn >> 12) & 0xf; | |
3735 | switch (opcode) | |
3736 | { | |
3737 | case 0: | |
3738 | case 2: | |
3d14faea | 3739 | *rt2 = *rt + 3; |
68fcca92 JW |
3740 | break; |
3741 | ||
3742 | case 4: | |
3743 | case 6: | |
3d14faea | 3744 | *rt2 = *rt + 2; |
68fcca92 JW |
3745 | break; |
3746 | ||
3747 | case 7: | |
3d14faea | 3748 | *rt2 = *rt; |
68fcca92 JW |
3749 | break; |
3750 | ||
3751 | case 8: | |
3752 | case 10: | |
3d14faea | 3753 | *rt2 = *rt + 1; |
68fcca92 JW |
3754 | break; |
3755 | ||
3756 | default: | |
3757 | return FALSE; | |
3758 | } | |
3759 | return TRUE; | |
3760 | } | |
3761 | else if (AARCH64_LDST_SIMD_S (insn) | |
3762 | || AARCH64_LDST_SIMD_S_PI (insn)) | |
3763 | { | |
3764 | *rt = AARCH64_RT (insn); | |
3765 | r = (insn >> 21) & 1; | |
3766 | *load = AARCH64_BIT (insn, 22); | |
3767 | opcode = (insn >> 13) & 0x7; | |
3768 | switch (opcode) | |
3769 | { | |
3770 | case 0: | |
3771 | case 2: | |
3772 | case 4: | |
3d14faea | 3773 | *rt2 = *rt + r; |
68fcca92 JW |
3774 | break; |
3775 | ||
3776 | case 1: | |
3777 | case 3: | |
3778 | case 5: | |
3d14faea | 3779 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
3780 | break; |
3781 | ||
3782 | case 6: | |
3d14faea | 3783 | *rt2 = *rt + r; |
68fcca92 JW |
3784 | break; |
3785 | ||
3786 | case 7: | |
3d14faea | 3787 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
3788 | break; |
3789 | ||
3790 | default: | |
3791 | return FALSE; | |
3792 | } | |
3793 | return TRUE; | |
3794 | } | |
3795 | ||
3796 | return FALSE; | |
3797 | } | |
3798 | ||
3799 | /* Return TRUE if INSN is multiply-accumulate. */ | |
3800 | ||
3801 | static bfd_boolean | |
3802 | aarch64_mlxl_p (uint32_t insn) | |
3803 | { | |
3804 | uint32_t op31 = AARCH64_OP31 (insn); | |
3805 | ||
3806 | if (AARCH64_MAC (insn) | |
3807 | && (op31 == 0 || op31 == 1 || op31 == 5) | |
3808 | /* Exclude MUL instructions which are encoded as a multiple accumulate | |
3809 | with RA = XZR. */ | |
3810 | && AARCH64_RA (insn) != AARCH64_ZR) | |
3811 | return TRUE; | |
3812 | ||
3813 | return FALSE; | |
3814 | } | |
3815 | ||
3816 | /* Some early revisions of the Cortex-A53 have an erratum (835769) whereby | |
3817 | it is possible for a 64-bit multiply-accumulate instruction to generate an | |
3818 | incorrect result. The details are quite complex and hard to | |
3819 | determine statically, since branches in the code may exist in some | |
3820 | circumstances, but all cases end with a memory (load, store, or | |
3821 | prefetch) instruction followed immediately by the multiply-accumulate | |
3822 | operation. We employ a linker patching technique, by moving the potentially | |
3823 | affected multiply-accumulate instruction into a patch region and replacing | |
3824 | the original instruction with a branch to the patch. This function checks | |
3825 | if INSN_1 is the memory operation followed by a multiply-accumulate | |
3826 | operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE | |
3827 | if INSN_1 and INSN_2 are safe. */ | |
3828 | ||
3829 | static bfd_boolean | |
3830 | aarch64_erratum_sequence (uint32_t insn_1, uint32_t insn_2) | |
3831 | { | |
3832 | uint32_t rt; | |
3d14faea | 3833 | uint32_t rt2; |
68fcca92 JW |
3834 | uint32_t rn; |
3835 | uint32_t rm; | |
3836 | uint32_t ra; | |
3837 | bfd_boolean pair; | |
3838 | bfd_boolean load; | |
3839 | ||
3840 | if (aarch64_mlxl_p (insn_2) | |
3d14faea | 3841 | && aarch64_mem_op_p (insn_1, &rt, &rt2, &pair, &load)) |
68fcca92 JW |
3842 | { |
3843 | /* Any SIMD memory op is independent of the subsequent MLA | |
3844 | by definition of the erratum. */ | |
3845 | if (AARCH64_BIT (insn_1, 26)) | |
3846 | return TRUE; | |
3847 | ||
3848 | /* If not SIMD, check for integer memory ops and MLA relationship. */ | |
3849 | rn = AARCH64_RN (insn_2); | |
3850 | ra = AARCH64_RA (insn_2); | |
3851 | rm = AARCH64_RM (insn_2); | |
3852 | ||
3853 | /* If this is a load and there's a true(RAW) dependency, we are safe | |
3854 | and this is not an erratum sequence. */ | |
3855 | if (load && | |
3856 | (rt == rn || rt == rm || rt == ra | |
3d14faea | 3857 | || (pair && (rt2 == rn || rt2 == rm || rt2 == ra)))) |
68fcca92 JW |
3858 | return FALSE; |
3859 | ||
3860 | /* We conservatively put out stubs for all other cases (including | |
3861 | writebacks). */ | |
3862 | return TRUE; | |
3863 | } | |
3864 | ||
3865 | return FALSE; | |
3866 | } | |
3867 | ||
520c7b56 JW |
3868 | /* Used to order a list of mapping symbols by address. */ |
3869 | ||
3870 | static int | |
3871 | elf_aarch64_compare_mapping (const void *a, const void *b) | |
3872 | { | |
3873 | const elf_aarch64_section_map *amap = (const elf_aarch64_section_map *) a; | |
3874 | const elf_aarch64_section_map *bmap = (const elf_aarch64_section_map *) b; | |
3875 | ||
3876 | if (amap->vma > bmap->vma) | |
3877 | return 1; | |
3878 | else if (amap->vma < bmap->vma) | |
3879 | return -1; | |
3880 | else if (amap->type > bmap->type) | |
3881 | /* Ensure results do not depend on the host qsort for objects with | |
3882 | multiple mapping symbols at the same address by sorting on type | |
3883 | after vma. */ | |
3884 | return 1; | |
3885 | else if (amap->type < bmap->type) | |
3886 | return -1; | |
3887 | else | |
3888 | return 0; | |
3889 | } | |
3890 | ||
2144188d | 3891 | |
35fee8b7 MS |
3892 | static char * |
3893 | _bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes) | |
3894 | { | |
3895 | char *stub_name = (char *) bfd_malloc | |
3896 | (strlen ("__erratum_835769_veneer_") + 16); | |
bb69498c NC |
3897 | if (stub_name != NULL) |
3898 | sprintf (stub_name,"__erratum_835769_veneer_%d", num_fixes); | |
35fee8b7 MS |
3899 | return stub_name; |
3900 | } | |
3901 | ||
4106101c | 3902 | /* Scan for Cortex-A53 erratum 835769 sequence. |
2144188d MS |
3903 | |
3904 | Return TRUE else FALSE on abnormal termination. */ | |
3905 | ||
68fcca92 | 3906 | static bfd_boolean |
5421cc6e MS |
3907 | _bfd_aarch64_erratum_835769_scan (bfd *input_bfd, |
3908 | struct bfd_link_info *info, | |
3909 | unsigned int *num_fixes_p) | |
68fcca92 JW |
3910 | { |
3911 | asection *section; | |
3912 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
68fcca92 | 3913 | unsigned int num_fixes = *num_fixes_p; |
68fcca92 JW |
3914 | |
3915 | if (htab == NULL) | |
2144188d | 3916 | return TRUE; |
68fcca92 JW |
3917 | |
3918 | for (section = input_bfd->sections; | |
3919 | section != NULL; | |
3920 | section = section->next) | |
3921 | { | |
3922 | bfd_byte *contents = NULL; | |
3923 | struct _aarch64_elf_section_data *sec_data; | |
3924 | unsigned int span; | |
3925 | ||
3926 | if (elf_section_type (section) != SHT_PROGBITS | |
3927 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
3928 | || (section->flags & SEC_EXCLUDE) != 0 | |
3929 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
3930 | || (section->output_section == bfd_abs_section_ptr)) | |
3931 | continue; | |
3932 | ||
3933 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
3934 | contents = elf_section_data (section)->this_hdr.contents; | |
3935 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
2144188d | 3936 | return FALSE; |
68fcca92 JW |
3937 | |
3938 | sec_data = elf_aarch64_section_data (section); | |
520c7b56 JW |
3939 | |
3940 | qsort (sec_data->map, sec_data->mapcount, | |
3941 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
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) | |
2144188d | 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) | |
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 | ||
2144188d | 3988 | return TRUE; |
68fcca92 JW |
3989 | } |
3990 | ||
13f622ec | 3991 | |
4106101c MS |
3992 | /* Test if instruction INSN is ADRP. */ |
3993 | ||
3994 | static bfd_boolean | |
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 | ||
4003 | static bfd_boolean | |
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; | |
4009 | bfd_boolean pair; | |
4010 | bfd_boolean load; | |
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 | ||
4028 | static bfd_boolean | |
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)) | |
4036 | return FALSE; | |
4037 | ||
4038 | if (span_end < i + 12) | |
4039 | return FALSE; | |
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) | |
4045 | return FALSE; | |
4046 | ||
4047 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_3)) | |
4048 | { | |
4049 | *p_veneer_i = i + 8; | |
4050 | return TRUE; | |
4051 | } | |
4052 | ||
4053 | if (span_end < i + 16) | |
4054 | return FALSE; | |
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; | |
4061 | return TRUE; | |
4062 | } | |
4063 | ||
4064 | return FALSE; | |
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) | |
4121 | snprintf (stub_name, len, "e843419@%04x_%08x_%" BFD_VMA_FMT "x", | |
4122 | input_section->owner->id, | |
4123 | input_section->id, | |
4124 | offset); | |
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 | ||
4135 | static bfd_boolean | |
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 NC |
4147 | if (stub_name == NULL) |
4148 | return FALSE; | |
4106101c MS |
4149 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, |
4150 | FALSE, FALSE); | |
4151 | if (stub_entry) | |
4152 | { | |
4153 | free (stub_name); | |
4154 | return TRUE; | |
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); | |
4172 | return FALSE; | |
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 | ||
4182 | return TRUE; | |
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 | ||
4195 | static bfd_boolean | |
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) | |
4202 | return TRUE; | |
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)) | |
4209 | return TRUE; | |
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)) | |
4220 | return FALSE; | |
4221 | ||
4222 | sec_data = elf_aarch64_section_data (section); | |
4223 | ||
4224 | qsort (sec_data->map, sec_data->mapcount, | |
4225 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
4226 | ||
4227 | for (span = 0; span < sec_data->mapcount; span++) | |
4228 | { | |
4229 | unsigned int span_start = sec_data->map[span].vma; | |
4230 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
4231 | ? sec_data->map[0].vma + section->size | |
4232 | : sec_data->map[span + 1].vma); | |
4233 | unsigned int i; | |
4234 | char span_type = sec_data->map[span].type; | |
4235 | ||
4236 | if (span_type == 'd') | |
4237 | continue; | |
4238 | ||
4239 | for (i = span_start; i + 8 < span_end; i += 4) | |
4240 | { | |
4241 | bfd_vma vma = (section->output_section->vma | |
4242 | + section->output_offset | |
4243 | + i); | |
4244 | bfd_vma veneer_i; | |
4245 | ||
4246 | if (_bfd_aarch64_erratum_843419_p | |
4247 | (contents, vma, i, span_end, &veneer_i)) | |
4248 | { | |
4249 | uint32_t insn = bfd_getl32 (contents + veneer_i); | |
4250 | ||
4251 | if (!_bfd_aarch64_erratum_843419_fixup (insn, i, veneer_i, | |
4252 | section, info)) | |
4253 | return FALSE; | |
4254 | } | |
4255 | } | |
4256 | } | |
4257 | ||
4258 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
4259 | free (contents); | |
61865519 | 4260 | } |
4106101c MS |
4261 | while (0); |
4262 | ||
4263 | return TRUE; | |
61865519 | 4264 | } |
13f622ec | 4265 | |
4106101c | 4266 | |
a06ea964 NC |
4267 | /* Determine and set the size of the stub section for a final link. |
4268 | ||
4269 | The basic idea here is to examine all the relocations looking for | |
4270 | PC-relative calls to a target that is unreachable with a "bl" | |
4271 | instruction. */ | |
4272 | ||
4273 | bfd_boolean | |
cec5225b | 4274 | elfNN_aarch64_size_stubs (bfd *output_bfd, |
a06ea964 NC |
4275 | bfd *stub_bfd, |
4276 | struct bfd_link_info *info, | |
4277 | bfd_signed_vma group_size, | |
4278 | asection * (*add_stub_section) (const char *, | |
4279 | asection *), | |
4280 | void (*layout_sections_again) (void)) | |
4281 | { | |
4282 | bfd_size_type stub_group_size; | |
4283 | bfd_boolean stubs_always_before_branch; | |
5421cc6e | 4284 | bfd_boolean stub_changed = FALSE; |
cec5225b | 4285 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); |
68fcca92 | 4286 | unsigned int num_erratum_835769_fixes = 0; |
a06ea964 NC |
4287 | |
4288 | /* Propagate mach to stub bfd, because it may not have been | |
4289 | finalized when we created stub_bfd. */ | |
4290 | bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd), | |
4291 | bfd_get_mach (output_bfd)); | |
4292 | ||
4293 | /* Stash our params away. */ | |
4294 | htab->stub_bfd = stub_bfd; | |
4295 | htab->add_stub_section = add_stub_section; | |
4296 | htab->layout_sections_again = layout_sections_again; | |
4297 | stubs_always_before_branch = group_size < 0; | |
4298 | if (group_size < 0) | |
4299 | stub_group_size = -group_size; | |
4300 | else | |
4301 | stub_group_size = group_size; | |
4302 | ||
4303 | if (stub_group_size == 1) | |
4304 | { | |
4305 | /* Default values. */ | |
b9eead84 | 4306 | /* AArch64 branch range is +-128MB. The value used is 1MB less. */ |
a06ea964 NC |
4307 | stub_group_size = 127 * 1024 * 1024; |
4308 | } | |
4309 | ||
4310 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
4311 | ||
4106101c MS |
4312 | (*htab->layout_sections_again) (); |
4313 | ||
5421cc6e MS |
4314 | if (htab->fix_erratum_835769) |
4315 | { | |
4316 | bfd *input_bfd; | |
4317 | ||
4318 | for (input_bfd = info->input_bfds; | |
4319 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
4320 | if (!_bfd_aarch64_erratum_835769_scan (input_bfd, info, | |
4321 | &num_erratum_835769_fixes)) | |
4322 | return FALSE; | |
4323 | ||
4106101c MS |
4324 | _bfd_aarch64_resize_stubs (htab); |
4325 | (*htab->layout_sections_again) (); | |
4326 | } | |
4327 | ||
739b5c9c | 4328 | if (htab->fix_erratum_843419 != ERRAT_NONE) |
4106101c MS |
4329 | { |
4330 | bfd *input_bfd; | |
4331 | ||
4332 | for (input_bfd = info->input_bfds; | |
4333 | input_bfd != NULL; | |
4334 | input_bfd = input_bfd->link.next) | |
4335 | { | |
4336 | asection *section; | |
4337 | ||
4338 | for (section = input_bfd->sections; | |
4339 | section != NULL; | |
4340 | section = section->next) | |
4341 | if (!_bfd_aarch64_erratum_843419_scan (input_bfd, section, info)) | |
4342 | return FALSE; | |
4343 | } | |
4344 | ||
4345 | _bfd_aarch64_resize_stubs (htab); | |
4346 | (*htab->layout_sections_again) (); | |
5421cc6e MS |
4347 | } |
4348 | ||
a06ea964 NC |
4349 | while (1) |
4350 | { | |
4351 | bfd *input_bfd; | |
a06ea964 | 4352 | |
9b9971aa MS |
4353 | for (input_bfd = info->input_bfds; |
4354 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
a06ea964 NC |
4355 | { |
4356 | Elf_Internal_Shdr *symtab_hdr; | |
4357 | asection *section; | |
4358 | Elf_Internal_Sym *local_syms = NULL; | |
4359 | ||
4360 | /* We'll need the symbol table in a second. */ | |
4361 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
4362 | if (symtab_hdr->sh_info == 0) | |
4363 | continue; | |
4364 | ||
4365 | /* Walk over each section attached to the input bfd. */ | |
4366 | for (section = input_bfd->sections; | |
4367 | section != NULL; section = section->next) | |
4368 | { | |
4369 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
4370 | ||
4371 | /* If there aren't any relocs, then there's nothing more | |
4372 | to do. */ | |
4373 | if ((section->flags & SEC_RELOC) == 0 | |
4374 | || section->reloc_count == 0 | |
4375 | || (section->flags & SEC_CODE) == 0) | |
4376 | continue; | |
4377 | ||
4378 | /* If this section is a link-once section that will be | |
4379 | discarded, then don't create any stubs. */ | |
4380 | if (section->output_section == NULL | |
4381 | || section->output_section->owner != output_bfd) | |
4382 | continue; | |
4383 | ||
4384 | /* Get the relocs. */ | |
4385 | internal_relocs | |
4386 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, | |
4387 | NULL, info->keep_memory); | |
4388 | if (internal_relocs == NULL) | |
4389 | goto error_ret_free_local; | |
4390 | ||
4391 | /* Now examine each relocation. */ | |
4392 | irela = internal_relocs; | |
4393 | irelaend = irela + section->reloc_count; | |
4394 | for (; irela < irelaend; irela++) | |
4395 | { | |
4396 | unsigned int r_type, r_indx; | |
cec5225b YZ |
4397 | enum elf_aarch64_stub_type stub_type; |
4398 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
a06ea964 NC |
4399 | asection *sym_sec; |
4400 | bfd_vma sym_value; | |
4401 | bfd_vma destination; | |
cec5225b | 4402 | struct elf_aarch64_link_hash_entry *hash; |
a06ea964 NC |
4403 | const char *sym_name; |
4404 | char *stub_name; | |
4405 | const asection *id_sec; | |
4406 | unsigned char st_type; | |
4407 | bfd_size_type len; | |
4408 | ||
cec5225b YZ |
4409 | r_type = ELFNN_R_TYPE (irela->r_info); |
4410 | r_indx = ELFNN_R_SYM (irela->r_info); | |
a06ea964 NC |
4411 | |
4412 | if (r_type >= (unsigned int) R_AARCH64_end) | |
4413 | { | |
4414 | bfd_set_error (bfd_error_bad_value); | |
4415 | error_ret_free_internal: | |
4416 | if (elf_section_data (section)->relocs == NULL) | |
4417 | free (internal_relocs); | |
4418 | goto error_ret_free_local; | |
4419 | } | |
4420 | ||
4421 | /* Only look for stubs on unconditional branch and | |
4422 | branch and link instructions. */ | |
a6bb11b2 YZ |
4423 | if (r_type != (unsigned int) AARCH64_R (CALL26) |
4424 | && r_type != (unsigned int) AARCH64_R (JUMP26)) | |
a06ea964 NC |
4425 | continue; |
4426 | ||
4427 | /* Now determine the call target, its name, value, | |
4428 | section. */ | |
4429 | sym_sec = NULL; | |
4430 | sym_value = 0; | |
4431 | destination = 0; | |
4432 | hash = NULL; | |
4433 | sym_name = NULL; | |
4434 | if (r_indx < symtab_hdr->sh_info) | |
4435 | { | |
4436 | /* It's a local symbol. */ | |
4437 | Elf_Internal_Sym *sym; | |
4438 | Elf_Internal_Shdr *hdr; | |
4439 | ||
4440 | if (local_syms == NULL) | |
4441 | { | |
4442 | local_syms | |
4443 | = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4444 | if (local_syms == NULL) | |
4445 | local_syms | |
4446 | = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
4447 | symtab_hdr->sh_info, 0, | |
4448 | NULL, NULL, NULL); | |
4449 | if (local_syms == NULL) | |
4450 | goto error_ret_free_internal; | |
4451 | } | |
4452 | ||
4453 | sym = local_syms + r_indx; | |
4454 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
4455 | sym_sec = hdr->bfd_section; | |
4456 | if (!sym_sec) | |
4457 | /* This is an undefined symbol. It can never | |
4458 | be resolved. */ | |
4459 | continue; | |
4460 | ||
4461 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
4462 | sym_value = sym->st_value; | |
4463 | destination = (sym_value + irela->r_addend | |
4464 | + sym_sec->output_offset | |
4465 | + sym_sec->output_section->vma); | |
4466 | st_type = ELF_ST_TYPE (sym->st_info); | |
4467 | sym_name | |
4468 | = bfd_elf_string_from_elf_section (input_bfd, | |
4469 | symtab_hdr->sh_link, | |
4470 | sym->st_name); | |
4471 | } | |
4472 | else | |
4473 | { | |
4474 | int e_indx; | |
4475 | ||
4476 | e_indx = r_indx - symtab_hdr->sh_info; | |
cec5225b | 4477 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
4478 | elf_sym_hashes (input_bfd)[e_indx]); |
4479 | ||
4480 | while (hash->root.root.type == bfd_link_hash_indirect | |
4481 | || hash->root.root.type == bfd_link_hash_warning) | |
cec5225b | 4482 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
4483 | hash->root.root.u.i.link); |
4484 | ||
4485 | if (hash->root.root.type == bfd_link_hash_defined | |
4486 | || hash->root.root.type == bfd_link_hash_defweak) | |
4487 | { | |
cec5225b YZ |
4488 | struct elf_aarch64_link_hash_table *globals = |
4489 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
4490 | sym_sec = hash->root.root.u.def.section; |
4491 | sym_value = hash->root.root.u.def.value; | |
4492 | /* For a destination in a shared library, | |
4493 | use the PLT stub as target address to | |
4494 | decide whether a branch stub is | |
4495 | needed. */ | |
4496 | if (globals->root.splt != NULL && hash != NULL | |
4497 | && hash->root.plt.offset != (bfd_vma) - 1) | |
4498 | { | |
4499 | sym_sec = globals->root.splt; | |
4500 | sym_value = hash->root.plt.offset; | |
4501 | if (sym_sec->output_section != NULL) | |
4502 | destination = (sym_value | |
4503 | + sym_sec->output_offset | |
4504 | + | |
4505 | sym_sec->output_section->vma); | |
4506 | } | |
4507 | else if (sym_sec->output_section != NULL) | |
4508 | destination = (sym_value + irela->r_addend | |
4509 | + sym_sec->output_offset | |
4510 | + sym_sec->output_section->vma); | |
4511 | } | |
4512 | else if (hash->root.root.type == bfd_link_hash_undefined | |
4513 | || (hash->root.root.type | |
4514 | == bfd_link_hash_undefweak)) | |
4515 | { | |
4516 | /* For a shared library, use the PLT stub as | |
4517 | target address to decide whether a long | |
4518 | branch stub is needed. | |
4519 | For absolute code, they cannot be handled. */ | |
cec5225b YZ |
4520 | struct elf_aarch64_link_hash_table *globals = |
4521 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
4522 | |
4523 | if (globals->root.splt != NULL && hash != NULL | |
4524 | && hash->root.plt.offset != (bfd_vma) - 1) | |
4525 | { | |
4526 | sym_sec = globals->root.splt; | |
4527 | sym_value = hash->root.plt.offset; | |
4528 | if (sym_sec->output_section != NULL) | |
4529 | destination = (sym_value | |
4530 | + sym_sec->output_offset | |
4531 | + | |
4532 | sym_sec->output_section->vma); | |
4533 | } | |
4534 | else | |
4535 | continue; | |
4536 | } | |
4537 | else | |
4538 | { | |
4539 | bfd_set_error (bfd_error_bad_value); | |
4540 | goto error_ret_free_internal; | |
4541 | } | |
4542 | st_type = ELF_ST_TYPE (hash->root.type); | |
4543 | sym_name = hash->root.root.root.string; | |
4544 | } | |
4545 | ||
4546 | /* Determine what (if any) linker stub is needed. */ | |
9a228467 JW |
4547 | stub_type = aarch64_type_of_stub (section, irela, sym_sec, |
4548 | st_type, destination); | |
a06ea964 NC |
4549 | if (stub_type == aarch64_stub_none) |
4550 | continue; | |
4551 | ||
4552 | /* Support for grouping stub sections. */ | |
4553 | id_sec = htab->stub_group[section->id].link_sec; | |
4554 | ||
4555 | /* Get the name of this stub. */ | |
cec5225b | 4556 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, hash, |
a06ea964 NC |
4557 | irela); |
4558 | if (!stub_name) | |
4559 | goto error_ret_free_internal; | |
4560 | ||
4561 | stub_entry = | |
4562 | aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
4563 | stub_name, FALSE, FALSE); | |
4564 | if (stub_entry != NULL) | |
4565 | { | |
4566 | /* The proper stub has already been created. */ | |
4567 | free (stub_name); | |
3da64fe4 RA |
4568 | /* Always update this stub's target since it may have |
4569 | changed after layout. */ | |
4570 | stub_entry->target_value = sym_value + irela->r_addend; | |
a06ea964 NC |
4571 | continue; |
4572 | } | |
4573 | ||
ef857521 MS |
4574 | stub_entry = _bfd_aarch64_add_stub_entry_in_group |
4575 | (stub_name, section, htab); | |
a06ea964 NC |
4576 | if (stub_entry == NULL) |
4577 | { | |
4578 | free (stub_name); | |
4579 | goto error_ret_free_internal; | |
4580 | } | |
4581 | ||
2f340668 | 4582 | stub_entry->target_value = sym_value + irela->r_addend; |
a06ea964 NC |
4583 | stub_entry->target_section = sym_sec; |
4584 | stub_entry->stub_type = stub_type; | |
4585 | stub_entry->h = hash; | |
4586 | stub_entry->st_type = st_type; | |
4587 | ||
4588 | if (sym_name == NULL) | |
4589 | sym_name = "unnamed"; | |
4590 | len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name); | |
4591 | stub_entry->output_name = bfd_alloc (htab->stub_bfd, len); | |
4592 | if (stub_entry->output_name == NULL) | |
4593 | { | |
4594 | free (stub_name); | |
4595 | goto error_ret_free_internal; | |
4596 | } | |
4597 | ||
4598 | snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME, | |
4599 | sym_name); | |
4600 | ||
4601 | stub_changed = TRUE; | |
4602 | } | |
4603 | ||
4604 | /* We're done with the internal relocs, free them. */ | |
4605 | if (elf_section_data (section)->relocs == NULL) | |
4606 | free (internal_relocs); | |
4607 | } | |
4608 | } | |
4609 | ||
4610 | if (!stub_changed) | |
4611 | break; | |
4612 | ||
13f622ec | 4613 | _bfd_aarch64_resize_stubs (htab); |
a06ea964 NC |
4614 | |
4615 | /* Ask the linker to do its stuff. */ | |
4616 | (*htab->layout_sections_again) (); | |
4617 | stub_changed = FALSE; | |
4618 | } | |
4619 | ||
4620 | return TRUE; | |
4621 | ||
4622 | error_ret_free_local: | |
4623 | return FALSE; | |
4624 | } | |
4625 | ||
4626 | /* Build all the stubs associated with the current output file. The | |
4627 | stubs are kept in a hash table attached to the main linker hash | |
4628 | table. We also set up the .plt entries for statically linked PIC | |
4629 | functions here. This function is called via aarch64_elf_finish in the | |
4630 | linker. */ | |
4631 | ||
4632 | bfd_boolean | |
cec5225b | 4633 | elfNN_aarch64_build_stubs (struct bfd_link_info *info) |
a06ea964 NC |
4634 | { |
4635 | asection *stub_sec; | |
4636 | struct bfd_hash_table *table; | |
cec5225b | 4637 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 4638 | |
cec5225b | 4639 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
4640 | |
4641 | for (stub_sec = htab->stub_bfd->sections; | |
4642 | stub_sec != NULL; stub_sec = stub_sec->next) | |
4643 | { | |
4644 | bfd_size_type size; | |
4645 | ||
4646 | /* Ignore non-stub sections. */ | |
4647 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
4648 | continue; | |
4649 | ||
4650 | /* Allocate memory to hold the linker stubs. */ | |
4651 | size = stub_sec->size; | |
4652 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); | |
4653 | if (stub_sec->contents == NULL && size != 0) | |
4654 | return FALSE; | |
4655 | stub_sec->size = 0; | |
61865519 | 4656 | |
9a2ebffd JW |
4657 | /* Add a branch around the stub section, and a nop, to keep it 8 byte |
4658 | aligned, as long branch stubs contain a 64-bit address. */ | |
61865519 | 4659 | bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents); |
9a2ebffd JW |
4660 | bfd_putl32 (INSN_NOP, stub_sec->contents + 4); |
4661 | stub_sec->size += 8; | |
a06ea964 NC |
4662 | } |
4663 | ||
4664 | /* Build the stubs as directed by the stub hash table. */ | |
4665 | table = &htab->stub_hash_table; | |
4666 | bfd_hash_traverse (table, aarch64_build_one_stub, info); | |
4667 | ||
4668 | return TRUE; | |
4669 | } | |
4670 | ||
4671 | ||
4672 | /* Add an entry to the code/data map for section SEC. */ | |
4673 | ||
4674 | static void | |
cec5225b | 4675 | elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma) |
a06ea964 NC |
4676 | { |
4677 | struct _aarch64_elf_section_data *sec_data = | |
cec5225b | 4678 | elf_aarch64_section_data (sec); |
a06ea964 NC |
4679 | unsigned int newidx; |
4680 | ||
4681 | if (sec_data->map == NULL) | |
4682 | { | |
cec5225b | 4683 | sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
4684 | sec_data->mapcount = 0; |
4685 | sec_data->mapsize = 1; | |
4686 | } | |
4687 | ||
4688 | newidx = sec_data->mapcount++; | |
4689 | ||
4690 | if (sec_data->mapcount > sec_data->mapsize) | |
4691 | { | |
4692 | sec_data->mapsize *= 2; | |
4693 | sec_data->map = bfd_realloc_or_free | |
cec5225b | 4694 | (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
4695 | } |
4696 | ||
4697 | if (sec_data->map) | |
4698 | { | |
4699 | sec_data->map[newidx].vma = vma; | |
4700 | sec_data->map[newidx].type = type; | |
4701 | } | |
4702 | } | |
4703 | ||
4704 | ||
4705 | /* Initialise maps of insn/data for input BFDs. */ | |
4706 | void | |
cec5225b | 4707 | bfd_elfNN_aarch64_init_maps (bfd *abfd) |
a06ea964 NC |
4708 | { |
4709 | Elf_Internal_Sym *isymbuf; | |
4710 | Elf_Internal_Shdr *hdr; | |
4711 | unsigned int i, localsyms; | |
4712 | ||
4713 | /* Make sure that we are dealing with an AArch64 elf binary. */ | |
4714 | if (!is_aarch64_elf (abfd)) | |
4715 | return; | |
4716 | ||
4717 | if ((abfd->flags & DYNAMIC) != 0) | |
68fcca92 | 4718 | return; |
a06ea964 NC |
4719 | |
4720 | hdr = &elf_symtab_hdr (abfd); | |
4721 | localsyms = hdr->sh_info; | |
4722 | ||
4723 | /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field | |
4724 | should contain the number of local symbols, which should come before any | |
4725 | global symbols. Mapping symbols are always local. */ | |
4726 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL); | |
4727 | ||
4728 | /* No internal symbols read? Skip this BFD. */ | |
4729 | if (isymbuf == NULL) | |
4730 | return; | |
4731 | ||
4732 | for (i = 0; i < localsyms; i++) | |
4733 | { | |
4734 | Elf_Internal_Sym *isym = &isymbuf[i]; | |
4735 | asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4736 | const char *name; | |
4737 | ||
4738 | if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL) | |
4739 | { | |
4740 | name = bfd_elf_string_from_elf_section (abfd, | |
4741 | hdr->sh_link, | |
4742 | isym->st_name); | |
4743 | ||
4744 | if (bfd_is_aarch64_special_symbol_name | |
4745 | (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP)) | |
cec5225b | 4746 | elfNN_aarch64_section_map_add (sec, name[1], isym->st_value); |
a06ea964 NC |
4747 | } |
4748 | } | |
4749 | } | |
4750 | ||
37c18eed SD |
4751 | static void |
4752 | setup_plt_values (struct bfd_link_info *link_info, | |
4753 | aarch64_plt_type plt_type) | |
4754 | { | |
4755 | struct elf_aarch64_link_hash_table *globals; | |
4756 | globals = elf_aarch64_hash_table (link_info); | |
4757 | ||
1dbade74 SD |
4758 | if (plt_type == PLT_BTI_PAC) |
4759 | { | |
68bb0359 | 4760 | globals->plt0_entry = elfNN_aarch64_small_plt0_bti_entry; |
1dbade74 SD |
4761 | |
4762 | /* Only in ET_EXEC we need PLTn with BTI. */ | |
4763 | if (bfd_link_pde (link_info)) | |
4764 | { | |
4765 | globals->plt_entry_size = PLT_BTI_PAC_SMALL_ENTRY_SIZE; | |
4766 | globals->plt_entry = elfNN_aarch64_small_plt_bti_pac_entry; | |
4767 | } | |
4768 | else | |
4769 | { | |
4770 | globals->plt_entry_size = PLT_PAC_SMALL_ENTRY_SIZE; | |
4771 | globals->plt_entry = elfNN_aarch64_small_plt_pac_entry; | |
4772 | } | |
4773 | } | |
4774 | else if (plt_type == PLT_BTI) | |
37c18eed | 4775 | { |
37c18eed | 4776 | globals->plt0_entry = elfNN_aarch64_small_plt0_bti_entry; |
37c18eed SD |
4777 | |
4778 | /* Only in ET_EXEC we need PLTn with BTI. */ | |
4779 | if (bfd_link_pde (link_info)) | |
4780 | { | |
4781 | globals->plt_entry_size = PLT_BTI_SMALL_ENTRY_SIZE; | |
4782 | globals->plt_entry = elfNN_aarch64_small_plt_bti_entry; | |
4783 | } | |
4784 | } | |
1dbade74 SD |
4785 | else if (plt_type == PLT_PAC) |
4786 | { | |
1dbade74 SD |
4787 | globals->plt_entry_size = PLT_PAC_SMALL_ENTRY_SIZE; |
4788 | globals->plt_entry = elfNN_aarch64_small_plt_pac_entry; | |
4789 | } | |
37c18eed SD |
4790 | } |
4791 | ||
a06ea964 NC |
4792 | /* Set option values needed during linking. */ |
4793 | void | |
cec5225b | 4794 | bfd_elfNN_aarch64_set_options (struct bfd *output_bfd, |
a06ea964 NC |
4795 | struct bfd_link_info *link_info, |
4796 | int no_enum_warn, | |
68fcca92 | 4797 | int no_wchar_warn, int pic_veneer, |
4106101c | 4798 | int fix_erratum_835769, |
739b5c9c | 4799 | erratum_84319_opts fix_erratum_843419, |
37c18eed SD |
4800 | int no_apply_dynamic_relocs, |
4801 | aarch64_bti_pac_info bp_info) | |
a06ea964 | 4802 | { |
cec5225b | 4803 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 4804 | |
cec5225b | 4805 | globals = elf_aarch64_hash_table (link_info); |
a06ea964 | 4806 | globals->pic_veneer = pic_veneer; |
68fcca92 | 4807 | globals->fix_erratum_835769 = fix_erratum_835769; |
739b5c9c TC |
4808 | /* If the default options are used, then ERRAT_ADR will be set by default |
4809 | which will enable the ADRP->ADR workaround for the erratum 843419 | |
4810 | workaround. */ | |
4106101c | 4811 | globals->fix_erratum_843419 = fix_erratum_843419; |
1f56df9d | 4812 | globals->no_apply_dynamic_relocs = no_apply_dynamic_relocs; |
a06ea964 NC |
4813 | |
4814 | BFD_ASSERT (is_aarch64_elf (output_bfd)); | |
4815 | elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn; | |
4816 | elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn; | |
37c18eed SD |
4817 | |
4818 | switch (bp_info.bti_type) | |
4819 | { | |
4820 | case BTI_WARN: | |
4821 | elf_aarch64_tdata (output_bfd)->no_bti_warn = 0; | |
4822 | elf_aarch64_tdata (output_bfd)->gnu_and_prop | |
4823 | |= GNU_PROPERTY_AARCH64_FEATURE_1_BTI; | |
4824 | break; | |
4825 | ||
4826 | default: | |
4827 | break; | |
4828 | } | |
4829 | elf_aarch64_tdata (output_bfd)->plt_type = bp_info.plt_type; | |
4830 | setup_plt_values (link_info, bp_info.plt_type); | |
a06ea964 NC |
4831 | } |
4832 | ||
a06ea964 NC |
4833 | static bfd_vma |
4834 | aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h, | |
cec5225b | 4835 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
4836 | *globals, struct bfd_link_info *info, |
4837 | bfd_vma value, bfd *output_bfd, | |
4838 | bfd_boolean *unresolved_reloc_p) | |
4839 | { | |
4840 | bfd_vma off = (bfd_vma) - 1; | |
4841 | asection *basegot = globals->root.sgot; | |
4842 | bfd_boolean dyn = globals->root.dynamic_sections_created; | |
4843 | ||
4844 | if (h != NULL) | |
4845 | { | |
a6bb11b2 | 4846 | BFD_ASSERT (basegot != NULL); |
a06ea964 NC |
4847 | off = h->got.offset; |
4848 | BFD_ASSERT (off != (bfd_vma) - 1); | |
0e1862bb L |
4849 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h) |
4850 | || (bfd_link_pic (info) | |
a06ea964 NC |
4851 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
4852 | || (ELF_ST_VISIBILITY (h->other) | |
4853 | && h->root.type == bfd_link_hash_undefweak)) | |
4854 | { | |
4855 | /* This is actually a static link, or it is a -Bsymbolic link | |
4856 | and the symbol is defined locally. We must initialize this | |
4857 | entry in the global offset table. Since the offset must | |
a6bb11b2 YZ |
4858 | always be a multiple of 8 (4 in the case of ILP32), we use |
4859 | the least significant bit to record whether we have | |
4860 | initialized it already. | |
a06ea964 NC |
4861 | When doing a dynamic link, we create a .rel(a).got relocation |
4862 | entry to initialize the value. This is done in the | |
4863 | finish_dynamic_symbol routine. */ | |
4864 | if ((off & 1) != 0) | |
4865 | off &= ~1; | |
4866 | else | |
4867 | { | |
cec5225b | 4868 | bfd_put_NN (output_bfd, value, basegot->contents + off); |
a06ea964 NC |
4869 | h->got.offset |= 1; |
4870 | } | |
4871 | } | |
4872 | else | |
4873 | *unresolved_reloc_p = FALSE; | |
4874 | ||
4875 | off = off + basegot->output_section->vma + basegot->output_offset; | |
4876 | } | |
4877 | ||
4878 | return off; | |
4879 | } | |
4880 | ||
4881 | /* Change R_TYPE to a more efficient access model where possible, | |
4882 | return the new reloc type. */ | |
4883 | ||
a6bb11b2 YZ |
4884 | static bfd_reloc_code_real_type |
4885 | aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type, | |
a06ea964 NC |
4886 | struct elf_link_hash_entry *h) |
4887 | { | |
4888 | bfd_boolean is_local = h == NULL; | |
a6bb11b2 | 4889 | |
a06ea964 NC |
4890 | switch (r_type) |
4891 | { | |
a6bb11b2 | 4892 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 4893 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a6bb11b2 YZ |
4894 | return (is_local |
4895 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4896 | : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21); | |
4897 | ||
389b8029 MS |
4898 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
4899 | return (is_local | |
4900 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4901 | : r_type); | |
4902 | ||
1ada945d MS |
4903 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
4904 | return (is_local | |
4905 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4906 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4907 | ||
0484b454 RL |
4908 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
4909 | return (is_local | |
4910 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4911 | : BFD_RELOC_AARCH64_NONE); | |
4912 | ||
4913 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
4914 | return (is_local | |
4915 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC | |
4916 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC); | |
4917 | ||
4918 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
4919 | return (is_local | |
4920 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 | |
4921 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1); | |
4922 | ||
a6bb11b2 | 4923 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
ce336788 | 4924 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 YZ |
4925 | return (is_local |
4926 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4927 | : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC); | |
4928 | ||
4929 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: | |
4930 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type; | |
4931 | ||
4932 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
4933 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type; | |
4934 | ||
043bf05a MS |
4935 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
4936 | return r_type; | |
4937 | ||
3c12b054 MS |
4938 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
4939 | return (is_local | |
4940 | ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 | |
4941 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4942 | ||
0484b454 | 4943 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
f955cccf | 4944 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 4945 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a06ea964 | 4946 | /* Instructions with these relocations will become NOPs. */ |
a6bb11b2 YZ |
4947 | return BFD_RELOC_AARCH64_NONE; |
4948 | ||
259364ad JW |
4949 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
4950 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: | |
4951 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: | |
4952 | return is_local ? BFD_RELOC_AARCH64_NONE : r_type; | |
4953 | ||
ac734732 RL |
4954 | #if ARCH_SIZE == 64 |
4955 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: | |
4956 | return is_local | |
4957 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC | |
4958 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC; | |
4959 | ||
4960 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: | |
4961 | return is_local | |
4962 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 | |
4963 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1; | |
4964 | #endif | |
4965 | ||
a6bb11b2 YZ |
4966 | default: |
4967 | break; | |
a06ea964 NC |
4968 | } |
4969 | ||
4970 | return r_type; | |
4971 | } | |
4972 | ||
4973 | static unsigned int | |
a6bb11b2 | 4974 | aarch64_reloc_got_type (bfd_reloc_code_real_type r_type) |
a06ea964 NC |
4975 | { |
4976 | switch (r_type) | |
4977 | { | |
a6bb11b2 YZ |
4978 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
4979 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 4980 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 4981 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 4982 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 4983 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 4984 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 4985 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 4986 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
a06ea964 NC |
4987 | return GOT_NORMAL; |
4988 | ||
ce336788 | 4989 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 4990 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 4991 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 4992 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 4993 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
73f925cc | 4994 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 4995 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 4996 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
4997 | return GOT_TLS_GD; |
4998 | ||
0484b454 | 4999 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
f955cccf | 5000 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 5001 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 5002 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 5003 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a6bb11b2 | 5004 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
f955cccf | 5005 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
1ada945d | 5006 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
5007 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
5008 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
5009 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a06ea964 NC |
5010 | return GOT_TLSDESC_GD; |
5011 | ||
a6bb11b2 | 5012 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 5013 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 5014 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 5015 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
5016 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
5017 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
a06ea964 NC |
5018 | return GOT_TLS_IE; |
5019 | ||
a6bb11b2 YZ |
5020 | default: |
5021 | break; | |
a06ea964 NC |
5022 | } |
5023 | return GOT_UNKNOWN; | |
5024 | } | |
5025 | ||
5026 | static bfd_boolean | |
5027 | aarch64_can_relax_tls (bfd *input_bfd, | |
5028 | struct bfd_link_info *info, | |
a6bb11b2 | 5029 | bfd_reloc_code_real_type r_type, |
a06ea964 NC |
5030 | struct elf_link_hash_entry *h, |
5031 | unsigned long r_symndx) | |
5032 | { | |
5033 | unsigned int symbol_got_type; | |
5034 | unsigned int reloc_got_type; | |
5035 | ||
9331eea1 | 5036 | if (! IS_AARCH64_TLS_RELAX_RELOC (r_type)) |
a06ea964 NC |
5037 | return FALSE; |
5038 | ||
cec5225b | 5039 | symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx); |
a06ea964 NC |
5040 | reloc_got_type = aarch64_reloc_got_type (r_type); |
5041 | ||
5042 | if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type)) | |
5043 | return TRUE; | |
5044 | ||
6dda7875 | 5045 | if (!bfd_link_executable (info)) |
a06ea964 NC |
5046 | return FALSE; |
5047 | ||
5048 | if (h && h->root.type == bfd_link_hash_undefweak) | |
5049 | return FALSE; | |
5050 | ||
5051 | return TRUE; | |
5052 | } | |
5053 | ||
a6bb11b2 YZ |
5054 | /* Given the relocation code R_TYPE, return the relaxed bfd reloc |
5055 | enumerator. */ | |
5056 | ||
5057 | static bfd_reloc_code_real_type | |
a06ea964 NC |
5058 | aarch64_tls_transition (bfd *input_bfd, |
5059 | struct bfd_link_info *info, | |
5060 | unsigned int r_type, | |
5061 | struct elf_link_hash_entry *h, | |
5062 | unsigned long r_symndx) | |
5063 | { | |
a6bb11b2 | 5064 | bfd_reloc_code_real_type bfd_r_type |
0aa13fee | 5065 | = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
a06ea964 | 5066 | |
a6bb11b2 YZ |
5067 | if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx)) |
5068 | return bfd_r_type; | |
5069 | ||
5070 | return aarch64_tls_transition_without_check (bfd_r_type, h); | |
a06ea964 NC |
5071 | } |
5072 | ||
5073 | /* Return the base VMA address which should be subtracted from real addresses | |
a6bb11b2 | 5074 | when resolving R_AARCH64_TLS_DTPREL relocation. */ |
a06ea964 NC |
5075 | |
5076 | static bfd_vma | |
5077 | dtpoff_base (struct bfd_link_info *info) | |
5078 | { | |
5079 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
5080 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); | |
5081 | return elf_hash_table (info)->tls_sec->vma; | |
5082 | } | |
5083 | ||
a06ea964 NC |
5084 | /* Return the base VMA address which should be subtracted from real addresses |
5085 | when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */ | |
5086 | ||
5087 | static bfd_vma | |
5088 | tpoff_base (struct bfd_link_info *info) | |
5089 | { | |
5090 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
5091 | ||
5092 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
ac21917f | 5093 | BFD_ASSERT (htab->tls_sec != NULL); |
a06ea964 NC |
5094 | |
5095 | bfd_vma base = align_power ((bfd_vma) TCB_SIZE, | |
5096 | htab->tls_sec->alignment_power); | |
5097 | return htab->tls_sec->vma - base; | |
5098 | } | |
5099 | ||
5100 | static bfd_vma * | |
5101 | symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5102 | unsigned long r_symndx) | |
5103 | { | |
5104 | /* Calculate the address of the GOT entry for symbol | |
5105 | referred to in h. */ | |
5106 | if (h != NULL) | |
5107 | return &h->got.offset; | |
5108 | else | |
5109 | { | |
5110 | /* local symbol */ | |
5111 | struct elf_aarch64_local_symbol *l; | |
5112 | ||
cec5225b | 5113 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
5114 | return &l[r_symndx].got_offset; |
5115 | } | |
5116 | } | |
5117 | ||
5118 | static void | |
5119 | symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5120 | unsigned long r_symndx) | |
5121 | { | |
5122 | bfd_vma *p; | |
5123 | p = symbol_got_offset_ref (input_bfd, h, r_symndx); | |
5124 | *p |= 1; | |
5125 | } | |
5126 | ||
5127 | static int | |
5128 | symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5129 | unsigned long r_symndx) | |
5130 | { | |
5131 | bfd_vma value; | |
5132 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
5133 | return value & 1; | |
5134 | } | |
5135 | ||
5136 | static bfd_vma | |
5137 | symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5138 | unsigned long r_symndx) | |
5139 | { | |
5140 | bfd_vma value; | |
5141 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
5142 | value &= ~1; | |
5143 | return value; | |
5144 | } | |
5145 | ||
5146 | static bfd_vma * | |
5147 | symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5148 | unsigned long r_symndx) | |
5149 | { | |
5150 | /* Calculate the address of the GOT entry for symbol | |
5151 | referred to in h. */ | |
5152 | if (h != NULL) | |
5153 | { | |
cec5225b YZ |
5154 | struct elf_aarch64_link_hash_entry *eh; |
5155 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
5156 | return &eh->tlsdesc_got_jump_table_offset; |
5157 | } | |
5158 | else | |
5159 | { | |
5160 | /* local symbol */ | |
5161 | struct elf_aarch64_local_symbol *l; | |
5162 | ||
cec5225b | 5163 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
5164 | return &l[r_symndx].tlsdesc_got_jump_table_offset; |
5165 | } | |
5166 | } | |
5167 | ||
5168 | static void | |
5169 | symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5170 | unsigned long r_symndx) | |
5171 | { | |
5172 | bfd_vma *p; | |
5173 | p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
5174 | *p |= 1; | |
5175 | } | |
5176 | ||
5177 | static int | |
5178 | symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd, | |
5179 | struct elf_link_hash_entry *h, | |
5180 | unsigned long r_symndx) | |
5181 | { | |
5182 | bfd_vma value; | |
5183 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
5184 | return value & 1; | |
5185 | } | |
5186 | ||
5187 | static bfd_vma | |
5188 | symbol_tlsdesc_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5189 | unsigned long r_symndx) | |
5190 | { | |
5191 | bfd_vma value; | |
5192 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
5193 | value &= ~1; | |
5194 | return value; | |
5195 | } | |
5196 | ||
68fcca92 JW |
5197 | /* Data for make_branch_to_erratum_835769_stub(). */ |
5198 | ||
5199 | struct erratum_835769_branch_to_stub_data | |
5200 | { | |
4106101c | 5201 | struct bfd_link_info *info; |
68fcca92 JW |
5202 | asection *output_section; |
5203 | bfd_byte *contents; | |
5204 | }; | |
5205 | ||
5206 | /* Helper to insert branches to erratum 835769 stubs in the right | |
5207 | places for a particular section. */ | |
5208 | ||
5209 | static bfd_boolean | |
5210 | make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry, | |
5211 | void *in_arg) | |
5212 | { | |
5213 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
5214 | struct erratum_835769_branch_to_stub_data *data; | |
5215 | bfd_byte *contents; | |
5216 | unsigned long branch_insn = 0; | |
5217 | bfd_vma veneered_insn_loc, veneer_entry_loc; | |
5218 | bfd_signed_vma branch_offset; | |
5219 | unsigned int target; | |
5220 | bfd *abfd; | |
5221 | ||
5222 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
5223 | data = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
5224 | ||
5225 | if (stub_entry->target_section != data->output_section | |
5226 | || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer) | |
5227 | return TRUE; | |
5228 | ||
5229 | contents = data->contents; | |
5230 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
5231 | + stub_entry->target_section->output_offset | |
5232 | + stub_entry->target_value; | |
5233 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
5234 | + stub_entry->stub_sec->output_offset | |
5235 | + stub_entry->stub_offset; | |
5236 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
5237 | ||
5238 | abfd = stub_entry->target_section->owner; | |
5239 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4eca0228 | 5240 | _bfd_error_handler |
90b6238f | 5241 | (_("%pB: error: erratum 835769 stub out " |
4eca0228 | 5242 | "of range (input file too large)"), abfd); |
68fcca92 JW |
5243 | |
5244 | target = stub_entry->target_value; | |
5245 | branch_insn = 0x14000000; | |
5246 | branch_offset >>= 2; | |
5247 | branch_offset &= 0x3ffffff; | |
5248 | branch_insn |= branch_offset; | |
5249 | bfd_putl32 (branch_insn, &contents[target]); | |
5250 | ||
5251 | return TRUE; | |
5252 | } | |
5253 | ||
4106101c MS |
5254 | |
5255 | static bfd_boolean | |
5256 | _bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry, | |
5257 | void *in_arg) | |
5258 | { | |
5259 | struct elf_aarch64_stub_hash_entry *stub_entry | |
5260 | = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
5261 | struct erratum_835769_branch_to_stub_data *data | |
5262 | = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
5263 | struct bfd_link_info *info; | |
5264 | struct elf_aarch64_link_hash_table *htab; | |
5265 | bfd_byte *contents; | |
5266 | asection *section; | |
5267 | bfd *abfd; | |
5268 | bfd_vma place; | |
5269 | uint32_t insn; | |
5270 | ||
5271 | info = data->info; | |
5272 | contents = data->contents; | |
5273 | section = data->output_section; | |
5274 | ||
5275 | htab = elf_aarch64_hash_table (info); | |
5276 | ||
5277 | if (stub_entry->target_section != section | |
5278 | || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer) | |
5279 | return TRUE; | |
5280 | ||
739b5c9c TC |
5281 | BFD_ASSERT (((htab->fix_erratum_843419 & ERRAT_ADRP) && stub_entry->stub_sec) |
5282 | || (htab->fix_erratum_843419 & ERRAT_ADR)); | |
5283 | ||
5284 | /* Only update the stub section if we have one. We should always have one if | |
5285 | we're allowed to use the ADRP errata workaround, otherwise it is not | |
5286 | required. */ | |
5287 | if (stub_entry->stub_sec) | |
5288 | { | |
5289 | insn = bfd_getl32 (contents + stub_entry->target_value); | |
5290 | bfd_putl32 (insn, | |
5291 | stub_entry->stub_sec->contents + stub_entry->stub_offset); | |
5292 | } | |
4106101c MS |
5293 | |
5294 | place = (section->output_section->vma + section->output_offset | |
5295 | + stub_entry->adrp_offset); | |
5296 | insn = bfd_getl32 (contents + stub_entry->adrp_offset); | |
5297 | ||
9fca35fc | 5298 | if (!_bfd_aarch64_adrp_p (insn)) |
4106101c MS |
5299 | abort (); |
5300 | ||
5301 | bfd_signed_vma imm = | |
5302 | (_bfd_aarch64_sign_extend | |
5303 | ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33) | |
5304 | - (place & 0xfff)); | |
5305 | ||
739b5c9c | 5306 | if ((htab->fix_erratum_843419 & ERRAT_ADR) |
4106101c MS |
5307 | && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM)) |
5308 | { | |
5309 | insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm) | |
5310 | | AARCH64_RT (insn)); | |
5311 | bfd_putl32 (insn, contents + stub_entry->adrp_offset); | |
739b5c9c TC |
5312 | /* Stub is not needed, don't map it out. */ |
5313 | stub_entry->stub_type = aarch64_stub_none; | |
4106101c | 5314 | } |
739b5c9c | 5315 | else if (htab->fix_erratum_843419 & ERRAT_ADRP) |
4106101c MS |
5316 | { |
5317 | bfd_vma veneered_insn_loc; | |
5318 | bfd_vma veneer_entry_loc; | |
5319 | bfd_signed_vma branch_offset; | |
5320 | uint32_t branch_insn; | |
5321 | ||
5322 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
5323 | + stub_entry->target_section->output_offset | |
5324 | + stub_entry->target_value; | |
5325 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
5326 | + stub_entry->stub_sec->output_offset | |
5327 | + stub_entry->stub_offset; | |
5328 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
5329 | ||
5330 | abfd = stub_entry->target_section->owner; | |
5331 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4eca0228 | 5332 | _bfd_error_handler |
90b6238f | 5333 | (_("%pB: error: erratum 843419 stub out " |
4106101c MS |
5334 | "of range (input file too large)"), abfd); |
5335 | ||
5336 | branch_insn = 0x14000000; | |
5337 | branch_offset >>= 2; | |
5338 | branch_offset &= 0x3ffffff; | |
5339 | branch_insn |= branch_offset; | |
5340 | bfd_putl32 (branch_insn, contents + stub_entry->target_value); | |
5341 | } | |
739b5c9c TC |
5342 | else |
5343 | { | |
5344 | abfd = stub_entry->target_section->owner; | |
5345 | _bfd_error_handler | |
64672071 | 5346 | (_("%pB: error: erratum 843419 immediate 0x%" BFD_VMA_FMT "x " |
739b5c9c TC |
5347 | "out of range for ADR (input file too large) and " |
5348 | "--fix-cortex-a53-843419=adr used. Run the linker with " | |
5349 | "--fix-cortex-a53-843419=full instead"), abfd, imm); | |
5350 | bfd_set_error (bfd_error_bad_value); | |
5351 | /* This function is called inside a hashtable traversal and the error | |
5352 | handlers called above turn into non-fatal errors. Which means this | |
5353 | case ld returns an exit code 0 and also produces a broken object file. | |
5354 | To prevent this, issue a hard abort. */ | |
5355 | BFD_FAIL (); | |
5356 | } | |
4106101c MS |
5357 | return TRUE; |
5358 | } | |
5359 | ||
5360 | ||
68fcca92 JW |
5361 | static bfd_boolean |
5362 | elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, | |
5363 | struct bfd_link_info *link_info, | |
5364 | asection *sec, | |
5365 | bfd_byte *contents) | |
5366 | ||
5367 | { | |
5368 | struct elf_aarch64_link_hash_table *globals = | |
f872121a | 5369 | elf_aarch64_hash_table (link_info); |
68fcca92 JW |
5370 | |
5371 | if (globals == NULL) | |
5372 | return FALSE; | |
5373 | ||
5374 | /* Fix code to point to erratum 835769 stubs. */ | |
5375 | if (globals->fix_erratum_835769) | |
5376 | { | |
5377 | struct erratum_835769_branch_to_stub_data data; | |
5378 | ||
4106101c | 5379 | data.info = link_info; |
68fcca92 JW |
5380 | data.output_section = sec; |
5381 | data.contents = contents; | |
5382 | bfd_hash_traverse (&globals->stub_hash_table, | |
5383 | make_branch_to_erratum_835769_stub, &data); | |
5384 | } | |
5385 | ||
4106101c MS |
5386 | if (globals->fix_erratum_843419) |
5387 | { | |
5388 | struct erratum_835769_branch_to_stub_data data; | |
5389 | ||
5390 | data.info = link_info; | |
5391 | data.output_section = sec; | |
5392 | data.contents = contents; | |
5393 | bfd_hash_traverse (&globals->stub_hash_table, | |
5394 | _bfd_aarch64_erratum_843419_branch_to_stub, &data); | |
5395 | } | |
5396 | ||
68fcca92 JW |
5397 | return FALSE; |
5398 | } | |
5399 | ||
2aff25ba JW |
5400 | /* Return TRUE if RELOC is a relocation against the base of GOT table. */ |
5401 | ||
5402 | static bfd_boolean | |
5403 | aarch64_relocation_aginst_gp_p (bfd_reloc_code_real_type reloc) | |
5404 | { | |
5405 | return (reloc == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14 | |
5406 | || reloc == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 | |
5407 | || reloc == BFD_RELOC_AARCH64_LD64_GOTOFF_LO15 | |
5408 | || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC | |
5409 | || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G1); | |
5410 | } | |
5411 | ||
4e7fbb34 JW |
5412 | /* Perform a relocation as part of a final link. The input relocation type |
5413 | should be TLS relaxed. */ | |
5414 | ||
a06ea964 | 5415 | static bfd_reloc_status_type |
cec5225b | 5416 | elfNN_aarch64_final_link_relocate (reloc_howto_type *howto, |
a06ea964 NC |
5417 | bfd *input_bfd, |
5418 | bfd *output_bfd, | |
5419 | asection *input_section, | |
5420 | bfd_byte *contents, | |
5421 | Elf_Internal_Rela *rel, | |
5422 | bfd_vma value, | |
5423 | struct bfd_link_info *info, | |
5424 | asection *sym_sec, | |
5425 | struct elf_link_hash_entry *h, | |
5426 | bfd_boolean *unresolved_reloc_p, | |
5427 | bfd_boolean save_addend, | |
1419bbe5 WN |
5428 | bfd_vma *saved_addend, |
5429 | Elf_Internal_Sym *sym) | |
a06ea964 | 5430 | { |
1419bbe5 | 5431 | Elf_Internal_Shdr *symtab_hdr; |
a06ea964 | 5432 | unsigned int r_type = howto->type; |
a6bb11b2 YZ |
5433 | bfd_reloc_code_real_type bfd_r_type |
5434 | = elfNN_aarch64_bfd_reloc_from_howto (howto); | |
a06ea964 NC |
5435 | unsigned long r_symndx; |
5436 | bfd_byte *hit_data = contents + rel->r_offset; | |
96d01d93 | 5437 | bfd_vma place, off, got_entry_addr = 0; |
a06ea964 | 5438 | bfd_signed_vma signed_addend; |
cec5225b | 5439 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 5440 | bfd_boolean weak_undef_p; |
ff07562f | 5441 | bfd_boolean relative_reloc; |
b53b1bed | 5442 | asection *base_got; |
ff07562f | 5443 | bfd_vma orig_value = value; |
ddb7fd0f | 5444 | bfd_boolean resolved_to_zero; |
0c1ded8d | 5445 | bfd_boolean abs_symbol_p; |
a06ea964 | 5446 | |
cec5225b | 5447 | globals = elf_aarch64_hash_table (info); |
a06ea964 | 5448 | |
1419bbe5 WN |
5449 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5450 | ||
a06ea964 NC |
5451 | BFD_ASSERT (is_aarch64_elf (input_bfd)); |
5452 | ||
cec5225b | 5453 | r_symndx = ELFNN_R_SYM (rel->r_info); |
a06ea964 | 5454 | |
a06ea964 NC |
5455 | place = input_section->output_section->vma |
5456 | + input_section->output_offset + rel->r_offset; | |
5457 | ||
5458 | /* Get addend, accumulating the addend for consecutive relocs | |
5459 | which refer to the same offset. */ | |
5460 | signed_addend = saved_addend ? *saved_addend : 0; | |
5461 | signed_addend += rel->r_addend; | |
5462 | ||
5463 | weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak | |
5464 | : bfd_is_und_section (sym_sec)); | |
c691de6a | 5465 | abs_symbol_p = h != NULL && bfd_is_abs_symbol (&h->root); |
0c1ded8d | 5466 | |
a6bb11b2 | 5467 | |
1419bbe5 WN |
5468 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
5469 | it here if it is defined in a non-shared object. */ | |
5470 | if (h != NULL | |
5471 | && h->type == STT_GNU_IFUNC | |
5472 | && h->def_regular) | |
5473 | { | |
5474 | asection *plt; | |
5475 | const char *name; | |
99ad26cb | 5476 | bfd_vma addend = 0; |
1419bbe5 | 5477 | |
545bc2b3 SN |
5478 | if ((input_section->flags & SEC_ALLOC) == 0) |
5479 | { | |
f657f8c4 NC |
5480 | /* If this is a SHT_NOTE section without SHF_ALLOC, treat |
5481 | STT_GNU_IFUNC symbol as STT_FUNC. */ | |
5482 | if (elf_section_type (input_section) == SHT_NOTE) | |
5483 | goto skip_ifunc; | |
5484 | ||
545bc2b3 SN |
5485 | /* Dynamic relocs are not propagated for SEC_DEBUGGING |
5486 | sections because such sections are not SEC_ALLOC and | |
5487 | thus ld.so will not process them. */ | |
5488 | if ((input_section->flags & SEC_DEBUGGING) != 0) | |
5489 | return bfd_reloc_ok; | |
5490 | ||
5491 | if (h->root.root.string) | |
5492 | name = h->root.root.string; | |
5493 | else | |
5494 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, NULL); | |
5495 | _bfd_error_handler | |
5496 | /* xgettext:c-format */ | |
2dcf00ce AM |
5497 | (_("%pB(%pA+%#" PRIx64 "): " |
5498 | "unresolvable %s relocation against symbol `%s'"), | |
5499 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
5500 | howto->name, name); | |
545bc2b3 | 5501 | bfd_set_error (bfd_error_bad_value); |
1d75a8e2 | 5502 | return bfd_reloc_notsupported; |
545bc2b3 SN |
5503 | } |
5504 | else if (h->plt.offset == (bfd_vma) -1) | |
5505 | goto bad_ifunc_reloc; | |
1419bbe5 WN |
5506 | |
5507 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
5508 | plt = globals->root.splt ? globals->root.splt : globals->root.iplt; | |
5509 | value = (plt->output_section->vma + plt->output_offset + h->plt.offset); | |
5510 | ||
5511 | switch (bfd_r_type) | |
5512 | { | |
5513 | default: | |
545bc2b3 | 5514 | bad_ifunc_reloc: |
1419bbe5 WN |
5515 | if (h->root.root.string) |
5516 | name = h->root.root.string; | |
5517 | else | |
5518 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
5519 | NULL); | |
4eca0228 | 5520 | _bfd_error_handler |
695344c0 | 5521 | /* xgettext:c-format */ |
871b3ab2 | 5522 | (_("%pB: relocation %s against STT_GNU_IFUNC " |
1419bbe5 WN |
5523 | "symbol `%s' isn't handled by %s"), input_bfd, |
5524 | howto->name, name, __FUNCTION__); | |
5525 | bfd_set_error (bfd_error_bad_value); | |
1d75a8e2 | 5526 | return bfd_reloc_notsupported; |
1419bbe5 WN |
5527 | |
5528 | case BFD_RELOC_AARCH64_NN: | |
5529 | if (rel->r_addend != 0) | |
5530 | { | |
5531 | if (h->root.root.string) | |
5532 | name = h->root.root.string; | |
5533 | else | |
5534 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
5535 | sym, NULL); | |
4eca0228 | 5536 | _bfd_error_handler |
695344c0 | 5537 | /* xgettext:c-format */ |
871b3ab2 | 5538 | (_("%pB: relocation %s against STT_GNU_IFUNC " |
2dcf00ce AM |
5539 | "symbol `%s' has non-zero addend: %" PRId64), |
5540 | input_bfd, howto->name, name, (int64_t) rel->r_addend); | |
1419bbe5 | 5541 | bfd_set_error (bfd_error_bad_value); |
1d75a8e2 | 5542 | return bfd_reloc_notsupported; |
1419bbe5 WN |
5543 | } |
5544 | ||
5545 | /* Generate dynamic relocation only when there is a | |
5546 | non-GOT reference in a shared object. */ | |
0e1862bb | 5547 | if (bfd_link_pic (info) && h->non_got_ref) |
1419bbe5 WN |
5548 | { |
5549 | Elf_Internal_Rela outrel; | |
5550 | asection *sreloc; | |
5551 | ||
5552 | /* Need a dynamic relocation to get the real function | |
5553 | address. */ | |
5554 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
5555 | info, | |
5556 | input_section, | |
5557 | rel->r_offset); | |
5558 | if (outrel.r_offset == (bfd_vma) -1 | |
5559 | || outrel.r_offset == (bfd_vma) -2) | |
5560 | abort (); | |
5561 | ||
5562 | outrel.r_offset += (input_section->output_section->vma | |
5563 | + input_section->output_offset); | |
5564 | ||
5565 | if (h->dynindx == -1 | |
5566 | || h->forced_local | |
0e1862bb | 5567 | || bfd_link_executable (info)) |
1419bbe5 WN |
5568 | { |
5569 | /* This symbol is resolved locally. */ | |
5570 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
5571 | outrel.r_addend = (h->root.u.def.value | |
5572 | + h->root.u.def.section->output_section->vma | |
5573 | + h->root.u.def.section->output_offset); | |
5574 | } | |
5575 | else | |
5576 | { | |
5577 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); | |
5578 | outrel.r_addend = 0; | |
5579 | } | |
5580 | ||
5581 | sreloc = globals->root.irelifunc; | |
5582 | elf_append_rela (output_bfd, sreloc, &outrel); | |
5583 | ||
5584 | /* If this reloc is against an external symbol, we | |
5585 | do not want to fiddle with the addend. Otherwise, | |
5586 | we need to include the symbol value so that it | |
5587 | becomes an addend for the dynamic reloc. For an | |
5588 | internal symbol, we have updated addend. */ | |
5589 | return bfd_reloc_ok; | |
5590 | } | |
5591 | /* FALLTHROUGH */ | |
1419bbe5 | 5592 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 5593 | case BFD_RELOC_AARCH64_JUMP26: |
652afeef TC |
5594 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
5595 | place, value, | |
1419bbe5 WN |
5596 | signed_addend, |
5597 | weak_undef_p); | |
5598 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, | |
5599 | howto, value); | |
1419bbe5 WN |
5600 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
5601 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 5602 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 5603 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 5604 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
dc8008f5 | 5605 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 5606 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
a2e1db00 | 5607 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
ce336788 | 5608 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
1419bbe5 WN |
5609 | base_got = globals->root.sgot; |
5610 | off = h->got.offset; | |
5611 | ||
5612 | if (base_got == NULL) | |
5613 | abort (); | |
5614 | ||
5615 | if (off == (bfd_vma) -1) | |
5616 | { | |
5617 | bfd_vma plt_index; | |
5618 | ||
5619 | /* We can't use h->got.offset here to save state, or | |
5620 | even just remember the offset, as finish_dynamic_symbol | |
5621 | would use that as offset into .got. */ | |
5622 | ||
5623 | if (globals->root.splt != NULL) | |
5624 | { | |
b1ee0cc4 WN |
5625 | plt_index = ((h->plt.offset - globals->plt_header_size) / |
5626 | globals->plt_entry_size); | |
1419bbe5 WN |
5627 | off = (plt_index + 3) * GOT_ENTRY_SIZE; |
5628 | base_got = globals->root.sgotplt; | |
5629 | } | |
5630 | else | |
5631 | { | |
5632 | plt_index = h->plt.offset / globals->plt_entry_size; | |
5633 | off = plt_index * GOT_ENTRY_SIZE; | |
5634 | base_got = globals->root.igotplt; | |
5635 | } | |
5636 | ||
5637 | if (h->dynindx == -1 | |
5638 | || h->forced_local | |
5639 | || info->symbolic) | |
5640 | { | |
5641 | /* This references the local definition. We must | |
5642 | initialize this entry in the global offset table. | |
5643 | Since the offset must always be a multiple of 8, | |
5644 | we use the least significant bit to record | |
5645 | whether we have initialized it already. | |
5646 | ||
5647 | When doing a dynamic link, we create a .rela.got | |
5648 | relocation entry to initialize the value. This | |
5649 | is done in the finish_dynamic_symbol routine. */ | |
5650 | if ((off & 1) != 0) | |
5651 | off &= ~1; | |
5652 | else | |
5653 | { | |
5654 | bfd_put_NN (output_bfd, value, | |
5655 | base_got->contents + off); | |
5656 | /* Note that this is harmless as -1 | 1 still is -1. */ | |
5657 | h->got.offset |= 1; | |
5658 | } | |
5659 | } | |
5660 | value = (base_got->output_section->vma | |
5661 | + base_got->output_offset + off); | |
5662 | } | |
5663 | else | |
5664 | value = aarch64_calculate_got_entry_vma (h, globals, info, | |
5665 | value, output_bfd, | |
5666 | unresolved_reloc_p); | |
a0becb89 | 5667 | |
2aff25ba JW |
5668 | if (aarch64_relocation_aginst_gp_p (bfd_r_type)) |
5669 | addend = (globals->root.sgot->output_section->vma | |
5670 | + globals->root.sgot->output_offset); | |
a0becb89 | 5671 | |
652afeef TC |
5672 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
5673 | place, value, | |
99ad26cb | 5674 | addend, weak_undef_p); |
1419bbe5 | 5675 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value); |
1419bbe5 | 5676 | case BFD_RELOC_AARCH64_ADD_LO12: |
ce336788 | 5677 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: |
1419bbe5 WN |
5678 | break; |
5679 | } | |
5680 | } | |
5681 | ||
f657f8c4 | 5682 | skip_ifunc: |
ddb7fd0f L |
5683 | resolved_to_zero = (h != NULL |
5684 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
5685 | ||
a6bb11b2 | 5686 | switch (bfd_r_type) |
a06ea964 | 5687 | { |
a6bb11b2 | 5688 | case BFD_RELOC_AARCH64_NONE: |
0484b454 | 5689 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
a6bb11b2 | 5690 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
0484b454 | 5691 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
a06ea964 NC |
5692 | *unresolved_reloc_p = FALSE; |
5693 | return bfd_reloc_ok; | |
5694 | ||
a6bb11b2 | 5695 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
5696 | |
5697 | /* When generating a shared object or relocatable executable, these | |
07d6d2b8 AM |
5698 | relocations are copied into the output file to be resolved at |
5699 | run time. */ | |
6353d82b JW |
5700 | if (((bfd_link_pic (info) |
5701 | || globals->root.is_relocatable_executable) | |
5702 | && (input_section->flags & SEC_ALLOC) | |
5703 | && (h == NULL | |
ddb7fd0f L |
5704 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
5705 | && !resolved_to_zero) | |
6353d82b JW |
5706 | || h->root.type != bfd_link_hash_undefweak)) |
5707 | /* Or we are creating an executable, we may need to keep relocations | |
5708 | for symbols satisfied by a dynamic library if we manage to avoid | |
5709 | copy relocs for the symbol. */ | |
5710 | || (ELIMINATE_COPY_RELOCS | |
5711 | && !bfd_link_pic (info) | |
5712 | && h != NULL | |
5713 | && (input_section->flags & SEC_ALLOC) | |
5714 | && h->dynindx != -1 | |
5715 | && !h->non_got_ref | |
5716 | && ((h->def_dynamic | |
5717 | && !h->def_regular) | |
5718 | || h->root.type == bfd_link_hash_undefweak | |
5719 | || h->root.type == bfd_link_hash_undefined))) | |
a06ea964 NC |
5720 | { |
5721 | Elf_Internal_Rela outrel; | |
5722 | bfd_byte *loc; | |
5723 | bfd_boolean skip, relocate; | |
5724 | asection *sreloc; | |
5725 | ||
5726 | *unresolved_reloc_p = FALSE; | |
5727 | ||
a06ea964 NC |
5728 | skip = FALSE; |
5729 | relocate = FALSE; | |
5730 | ||
5731 | outrel.r_addend = signed_addend; | |
5732 | outrel.r_offset = | |
5733 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
5734 | rel->r_offset); | |
5735 | if (outrel.r_offset == (bfd_vma) - 1) | |
5736 | skip = TRUE; | |
5737 | else if (outrel.r_offset == (bfd_vma) - 2) | |
5738 | { | |
5739 | skip = TRUE; | |
5740 | relocate = TRUE; | |
5741 | } | |
0c1ded8d RL |
5742 | else if (abs_symbol_p) |
5743 | { | |
5744 | /* Local absolute symbol. */ | |
5745 | skip = (h->forced_local || (h->dynindx == -1)); | |
5746 | relocate = skip; | |
5747 | } | |
a06ea964 NC |
5748 | |
5749 | outrel.r_offset += (input_section->output_section->vma | |
5750 | + input_section->output_offset); | |
5751 | ||
5752 | if (skip) | |
5753 | memset (&outrel, 0, sizeof outrel); | |
5754 | else if (h != NULL | |
5755 | && h->dynindx != -1 | |
0e1862bb | 5756 | && (!bfd_link_pic (info) |
0c1ded8d | 5757 | || !(bfd_link_pie (info) || SYMBOLIC_BIND (info, h)) |
0e1862bb | 5758 | || !h->def_regular)) |
cec5225b | 5759 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); |
a06ea964 NC |
5760 | else |
5761 | { | |
5762 | int symbol; | |
5763 | ||
5764 | /* On SVR4-ish systems, the dynamic loader cannot | |
5765 | relocate the text and data segments independently, | |
5766 | so the symbol does not matter. */ | |
5767 | symbol = 0; | |
1f56df9d | 5768 | relocate = globals->no_apply_dynamic_relocs ? FALSE : TRUE; |
a6bb11b2 | 5769 | outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE)); |
a06ea964 NC |
5770 | outrel.r_addend += value; |
5771 | } | |
5772 | ||
1419bbe5 WN |
5773 | sreloc = elf_section_data (input_section)->sreloc; |
5774 | if (sreloc == NULL || sreloc->contents == NULL) | |
5775 | return bfd_reloc_notsupported; | |
5776 | ||
5777 | loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals); | |
cec5225b | 5778 | bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc); |
a06ea964 | 5779 | |
1419bbe5 | 5780 | if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size) |
a06ea964 NC |
5781 | { |
5782 | /* Sanity to check that we have previously allocated | |
5783 | sufficient space in the relocation section for the | |
5784 | number of relocations we actually want to emit. */ | |
5785 | abort (); | |
5786 | } | |
5787 | ||
5788 | /* If this reloc is against an external symbol, we do not want to | |
5789 | fiddle with the addend. Otherwise, we need to include the symbol | |
5790 | value so that it becomes an addend for the dynamic reloc. */ | |
5791 | if (!relocate) | |
5792 | return bfd_reloc_ok; | |
5793 | ||
5794 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5795 | contents, rel->r_offset, value, | |
5796 | signed_addend); | |
5797 | } | |
5798 | else | |
5799 | value += signed_addend; | |
5800 | break; | |
5801 | ||
a6bb11b2 | 5802 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 5803 | case BFD_RELOC_AARCH64_JUMP26: |
a06ea964 NC |
5804 | { |
5805 | asection *splt = globals->root.splt; | |
5806 | bfd_boolean via_plt_p = | |
5807 | splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1; | |
5808 | ||
5809 | /* A call to an undefined weak symbol is converted to a jump to | |
5810 | the next instruction unless a PLT entry will be created. | |
5811 | The jump to the next instruction is optimized as a NOP. | |
5812 | Do the same for local undefined symbols. */ | |
5813 | if (weak_undef_p && ! via_plt_p) | |
5814 | { | |
5815 | bfd_putl32 (INSN_NOP, hit_data); | |
5816 | return bfd_reloc_ok; | |
5817 | } | |
5818 | ||
5819 | /* If the call goes through a PLT entry, make sure to | |
5820 | check distance to the right destination address. */ | |
5821 | if (via_plt_p) | |
07f9ddfe JW |
5822 | value = (splt->output_section->vma |
5823 | + splt->output_offset + h->plt.offset); | |
5824 | ||
5825 | /* Check if a stub has to be inserted because the destination | |
5826 | is too far away. */ | |
5827 | struct elf_aarch64_stub_hash_entry *stub_entry = NULL; | |
2f340668 JW |
5828 | |
5829 | /* If the branch destination is directed to plt stub, "value" will be | |
5830 | the final destination, otherwise we should plus signed_addend, it may | |
5831 | contain non-zero value, for example call to local function symbol | |
5832 | which are turned into "sec_sym + sec_off", and sec_off is kept in | |
5833 | signed_addend. */ | |
5834 | if (! aarch64_valid_branch_p (via_plt_p ? value : value + signed_addend, | |
5835 | place)) | |
07f9ddfe JW |
5836 | /* The target is out of reach, so redirect the branch to |
5837 | the local stub for this function. */ | |
5838 | stub_entry = elfNN_aarch64_get_stub_entry (input_section, sym_sec, h, | |
5839 | rel, globals); | |
5840 | if (stub_entry != NULL) | |
2f340668 JW |
5841 | { |
5842 | value = (stub_entry->stub_offset | |
5843 | + stub_entry->stub_sec->output_offset | |
5844 | + stub_entry->stub_sec->output_section->vma); | |
5845 | ||
5846 | /* We have redirected the destination to stub entry address, | |
5847 | so ignore any addend record in the original rela entry. */ | |
5848 | signed_addend = 0; | |
5849 | } | |
a06ea964 | 5850 | } |
652afeef TC |
5851 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
5852 | place, value, | |
caed7120 | 5853 | signed_addend, weak_undef_p); |
07f9ddfe | 5854 | *unresolved_reloc_p = FALSE; |
a06ea964 NC |
5855 | break; |
5856 | ||
dcbd20eb JW |
5857 | case BFD_RELOC_AARCH64_16_PCREL: |
5858 | case BFD_RELOC_AARCH64_32_PCREL: | |
5859 | case BFD_RELOC_AARCH64_64_PCREL: | |
ce336788 JW |
5860 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
5861 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
5862 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
5863 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
1daf502a RL |
5864 | case BFD_RELOC_AARCH64_MOVW_PREL_G0: |
5865 | case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC: | |
5866 | case BFD_RELOC_AARCH64_MOVW_PREL_G1: | |
5867 | case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC: | |
5868 | case BFD_RELOC_AARCH64_MOVW_PREL_G2: | |
5869 | case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC: | |
5870 | case BFD_RELOC_AARCH64_MOVW_PREL_G3: | |
0e1862bb | 5871 | if (bfd_link_pic (info) |
dcbd20eb JW |
5872 | && (input_section->flags & SEC_ALLOC) != 0 |
5873 | && (input_section->flags & SEC_READONLY) != 0 | |
d68f1976 | 5874 | && !SYMBOL_REFERENCES_LOCAL (info, h)) |
dcbd20eb JW |
5875 | { |
5876 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
5877 | ||
4eca0228 | 5878 | _bfd_error_handler |
695344c0 | 5879 | /* xgettext:c-format */ |
871b3ab2 | 5880 | (_("%pB: relocation %s against symbol `%s' which may bind " |
d68f1976 JW |
5881 | "externally can not be used when making a shared object; " |
5882 | "recompile with -fPIC"), | |
dcbd20eb JW |
5883 | input_bfd, elfNN_aarch64_howto_table[howto_index].name, |
5884 | h->root.root.string); | |
5885 | bfd_set_error (bfd_error_bad_value); | |
1d75a8e2 | 5886 | return bfd_reloc_notsupported; |
dcbd20eb | 5887 | } |
1a0670f3 | 5888 | /* Fall through. */ |
dcbd20eb | 5889 | |
a6bb11b2 | 5890 | case BFD_RELOC_AARCH64_16: |
92d77487 RL |
5891 | #if ARCH_SIZE == 64 |
5892 | case BFD_RELOC_AARCH64_32: | |
5893 | #endif | |
a6bb11b2 | 5894 | case BFD_RELOC_AARCH64_ADD_LO12: |
a6bb11b2 | 5895 | case BFD_RELOC_AARCH64_BRANCH19: |
ce336788 | 5896 | case BFD_RELOC_AARCH64_LDST128_LO12: |
a6bb11b2 YZ |
5897 | case BFD_RELOC_AARCH64_LDST16_LO12: |
5898 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
5899 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
ce336788 | 5900 | case BFD_RELOC_AARCH64_LDST8_LO12: |
a6bb11b2 YZ |
5901 | case BFD_RELOC_AARCH64_MOVW_G0: |
5902 | case BFD_RELOC_AARCH64_MOVW_G0_NC: | |
ce336788 | 5903 | case BFD_RELOC_AARCH64_MOVW_G0_S: |
a6bb11b2 YZ |
5904 | case BFD_RELOC_AARCH64_MOVW_G1: |
5905 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
ce336788 | 5906 | case BFD_RELOC_AARCH64_MOVW_G1_S: |
a6bb11b2 YZ |
5907 | case BFD_RELOC_AARCH64_MOVW_G2: |
5908 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
ce336788 | 5909 | case BFD_RELOC_AARCH64_MOVW_G2_S: |
a6bb11b2 | 5910 | case BFD_RELOC_AARCH64_MOVW_G3: |
a6bb11b2 | 5911 | case BFD_RELOC_AARCH64_TSTBR14: |
652afeef TC |
5912 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
5913 | place, value, | |
caed7120 | 5914 | signed_addend, weak_undef_p); |
a06ea964 NC |
5915 | break; |
5916 | ||
a6bb11b2 YZ |
5917 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
5918 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 5919 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 5920 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 5921 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 5922 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
2aff25ba JW |
5923 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
5924 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: | |
5925 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: | |
a06ea964 NC |
5926 | if (globals->root.sgot == NULL) |
5927 | BFD_ASSERT (h != NULL); | |
5928 | ||
ff07562f | 5929 | relative_reloc = FALSE; |
a06ea964 NC |
5930 | if (h != NULL) |
5931 | { | |
99ad26cb | 5932 | bfd_vma addend = 0; |
ff07562f JW |
5933 | |
5934 | /* If a symbol is not dynamic and is not undefined weak, bind it | |
5935 | locally and generate a RELATIVE relocation under PIC mode. | |
5936 | ||
5937 | NOTE: one symbol may be referenced by several relocations, we | |
5938 | should only generate one RELATIVE relocation for that symbol. | |
5939 | Therefore, check GOT offset mark first. */ | |
5940 | if (h->dynindx == -1 | |
5941 | && !h->forced_local | |
5942 | && h->root.type != bfd_link_hash_undefweak | |
5943 | && bfd_link_pic (info) | |
5944 | && !symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
5945 | relative_reloc = TRUE; | |
5946 | ||
a06ea964 NC |
5947 | value = aarch64_calculate_got_entry_vma (h, globals, info, value, |
5948 | output_bfd, | |
5949 | unresolved_reloc_p); | |
ff07562f JW |
5950 | /* Record the GOT entry address which will be used when generating |
5951 | RELATIVE relocation. */ | |
5952 | if (relative_reloc) | |
5953 | got_entry_addr = value; | |
5954 | ||
2aff25ba | 5955 | if (aarch64_relocation_aginst_gp_p (bfd_r_type)) |
99ad26cb JW |
5956 | addend = (globals->root.sgot->output_section->vma |
5957 | + globals->root.sgot->output_offset); | |
652afeef TC |
5958 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
5959 | place, value, | |
99ad26cb | 5960 | addend, weak_undef_p); |
a06ea964 | 5961 | } |
b53b1bed JW |
5962 | else |
5963 | { | |
99ad26cb | 5964 | bfd_vma addend = 0; |
b53b1bed JW |
5965 | struct elf_aarch64_local_symbol *locals |
5966 | = elf_aarch64_locals (input_bfd); | |
5967 | ||
5968 | if (locals == NULL) | |
5969 | { | |
5970 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
4eca0228 | 5971 | _bfd_error_handler |
695344c0 | 5972 | /* xgettext:c-format */ |
90b6238f | 5973 | (_("%pB: local symbol descriptor table be NULL when applying " |
b53b1bed JW |
5974 | "relocation %s against local symbol"), |
5975 | input_bfd, elfNN_aarch64_howto_table[howto_index].name); | |
5976 | abort (); | |
5977 | } | |
5978 | ||
5979 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
5980 | base_got = globals->root.sgot; | |
ff07562f JW |
5981 | got_entry_addr = (base_got->output_section->vma |
5982 | + base_got->output_offset + off); | |
b53b1bed JW |
5983 | |
5984 | if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
5985 | { | |
5986 | bfd_put_64 (output_bfd, value, base_got->contents + off); | |
5987 | ||
ff07562f JW |
5988 | /* For local symbol, we have done absolute relocation in static |
5989 | linking stage. While for shared library, we need to update the | |
5990 | content of GOT entry according to the shared object's runtime | |
5991 | base address. So, we need to generate a R_AARCH64_RELATIVE reloc | |
5992 | for dynamic linker. */ | |
0e1862bb | 5993 | if (bfd_link_pic (info)) |
ff07562f | 5994 | relative_reloc = TRUE; |
b53b1bed JW |
5995 | |
5996 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
5997 | } | |
5998 | ||
5999 | /* Update the relocation value to GOT entry addr as we have transformed | |
6000 | the direct data access into indirect data access through GOT. */ | |
6001 | value = got_entry_addr; | |
99ad26cb | 6002 | |
2aff25ba | 6003 | if (aarch64_relocation_aginst_gp_p (bfd_r_type)) |
99ad26cb JW |
6004 | addend = base_got->output_section->vma + base_got->output_offset; |
6005 | ||
652afeef TC |
6006 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
6007 | place, value, | |
99ad26cb | 6008 | addend, weak_undef_p); |
b53b1bed | 6009 | } |
ff07562f JW |
6010 | |
6011 | if (relative_reloc) | |
6012 | { | |
6013 | asection *s; | |
6014 | Elf_Internal_Rela outrel; | |
6015 | ||
6016 | s = globals->root.srelgot; | |
6017 | if (s == NULL) | |
6018 | abort (); | |
6019 | ||
6020 | outrel.r_offset = got_entry_addr; | |
6021 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); | |
6022 | outrel.r_addend = orig_value; | |
6023 | elf_append_rela (output_bfd, s, &outrel); | |
6024 | } | |
a2e1db00 RL |
6025 | break; |
6026 | ||
ce336788 | 6027 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 6028 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 6029 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 6030 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 6031 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 6032 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 6033 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
73f925cc | 6034 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 6035 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 6036 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
6037 | if (globals->root.sgot == NULL) |
6038 | return bfd_reloc_notsupported; | |
6039 | ||
6040 | value = (symbol_got_offset (input_bfd, h, r_symndx) | |
6041 | + globals->root.sgot->output_section->vma | |
f44a1f8e | 6042 | + globals->root.sgot->output_offset); |
a06ea964 | 6043 | |
652afeef TC |
6044 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
6045 | place, value, | |
caed7120 | 6046 | 0, weak_undef_p); |
a06ea964 NC |
6047 | *unresolved_reloc_p = FALSE; |
6048 | break; | |
6049 | ||
7ba7cfe4 | 6050 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 6051 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
3b957e5b RL |
6052 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
6053 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
94facae3 RL |
6054 | if (globals->root.sgot == NULL) |
6055 | return bfd_reloc_notsupported; | |
6056 | ||
6057 | value = symbol_got_offset (input_bfd, h, r_symndx); | |
652afeef TC |
6058 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
6059 | place, value, | |
94facae3 RL |
6060 | 0, weak_undef_p); |
6061 | *unresolved_reloc_p = FALSE; | |
6062 | break; | |
6063 | ||
6ffe9a1b | 6064 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12: |
40fbed84 | 6065 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12: |
753999c1 | 6066 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC: |
07c9aa07 JW |
6067 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12: |
6068 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC: | |
6069 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12: | |
6070 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC: | |
6071 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12: | |
6072 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC: | |
6073 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12: | |
6074 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC: | |
6ffe9a1b JW |
6075 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0: |
6076 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC: | |
6077 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1: | |
6078 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC: | |
6079 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2: | |
652afeef TC |
6080 | { |
6081 | if (!(weak_undef_p || elf_hash_table (info)->tls_sec)) | |
6082 | { | |
6083 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
6084 | _bfd_error_handler | |
6085 | /* xgettext:c-format */ | |
6086 | (_("%pB: TLS relocation %s against undefined symbol `%s'"), | |
6087 | input_bfd, elfNN_aarch64_howto_table[howto_index].name, | |
6088 | h->root.root.string); | |
6089 | bfd_set_error (bfd_error_bad_value); | |
6090 | return bfd_reloc_notsupported; | |
6091 | } | |
6092 | ||
6093 | bfd_vma def_value | |
6094 | = weak_undef_p ? 0 : signed_addend - dtpoff_base (info); | |
6095 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, | |
6096 | place, value, | |
6097 | def_value, weak_undef_p); | |
6098 | break; | |
6099 | } | |
40fbed84 | 6100 | |
a6bb11b2 YZ |
6101 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
6102 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: | |
6103 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: | |
e04ef022 RL |
6104 | case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12: |
6105 | case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC: | |
6106 | case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12: | |
6107 | case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC: | |
6108 | case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12: | |
6109 | case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC: | |
6110 | case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12: | |
6111 | case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC: | |
a6bb11b2 YZ |
6112 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: |
6113 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
6114 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: | |
6115 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
6116 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
652afeef TC |
6117 | { |
6118 | if (!(weak_undef_p || elf_hash_table (info)->tls_sec)) | |
6119 | { | |
6120 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
6121 | _bfd_error_handler | |
6122 | /* xgettext:c-format */ | |
6123 | (_("%pB: TLS relocation %s against undefined symbol `%s'"), | |
6124 | input_bfd, elfNN_aarch64_howto_table[howto_index].name, | |
6125 | h->root.root.string); | |
6126 | bfd_set_error (bfd_error_bad_value); | |
6127 | return bfd_reloc_notsupported; | |
6128 | } | |
6129 | ||
6130 | bfd_vma def_value | |
6131 | = weak_undef_p ? 0 : signed_addend - tpoff_base (info); | |
6132 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, | |
6133 | place, value, | |
6134 | def_value, weak_undef_p); | |
6135 | *unresolved_reloc_p = FALSE; | |
6136 | break; | |
6137 | } | |
a06ea964 | 6138 | |
f955cccf | 6139 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 6140 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 6141 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 6142 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
f955cccf | 6143 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
1ada945d | 6144 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
6145 | if (globals->root.sgot == NULL) |
6146 | return bfd_reloc_notsupported; | |
a06ea964 NC |
6147 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) |
6148 | + globals->root.sgotplt->output_section->vma | |
f44a1f8e | 6149 | + globals->root.sgotplt->output_offset |
a06ea964 NC |
6150 | + globals->sgotplt_jump_table_size); |
6151 | ||
652afeef TC |
6152 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
6153 | place, value, | |
caed7120 | 6154 | 0, weak_undef_p); |
a06ea964 NC |
6155 | *unresolved_reloc_p = FALSE; |
6156 | break; | |
6157 | ||
0484b454 RL |
6158 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
6159 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
6160 | if (globals->root.sgot == NULL) | |
6161 | return bfd_reloc_notsupported; | |
6162 | ||
6163 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) | |
6164 | + globals->root.sgotplt->output_section->vma | |
6165 | + globals->root.sgotplt->output_offset | |
6166 | + globals->sgotplt_jump_table_size); | |
6167 | ||
6168 | value -= (globals->root.sgot->output_section->vma | |
6169 | + globals->root.sgot->output_offset); | |
6170 | ||
652afeef TC |
6171 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
6172 | place, value, | |
0484b454 RL |
6173 | 0, weak_undef_p); |
6174 | *unresolved_reloc_p = FALSE; | |
6175 | break; | |
6176 | ||
a06ea964 NC |
6177 | default: |
6178 | return bfd_reloc_notsupported; | |
6179 | } | |
6180 | ||
6181 | if (saved_addend) | |
6182 | *saved_addend = value; | |
6183 | ||
6184 | /* Only apply the final relocation in a sequence. */ | |
6185 | if (save_addend) | |
6186 | return bfd_reloc_continue; | |
6187 | ||
caed7120 YZ |
6188 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, |
6189 | howto, value); | |
a06ea964 NC |
6190 | } |
6191 | ||
2d0ca824 YN |
6192 | /* LP64 and ILP32 operates on x- and w-registers respectively. |
6193 | Next definitions take into account the difference between | |
6194 | corresponding machine codes. R means x-register if the target | |
6195 | arch is LP64, and w-register if the target is ILP32. */ | |
6196 | ||
6197 | #if ARCH_SIZE == 64 | |
6198 | # define add_R0_R0 (0x91000000) | |
6199 | # define add_R0_R0_R1 (0x8b000020) | |
6200 | # define add_R0_R1 (0x91400020) | |
6201 | # define ldr_R0 (0x58000000) | |
6202 | # define ldr_R0_mask(i) (i & 0xffffffe0) | |
6203 | # define ldr_R0_x0 (0xf9400000) | |
6204 | # define ldr_hw_R0 (0xf2a00000) | |
6205 | # define movk_R0 (0xf2800000) | |
6206 | # define movz_R0 (0xd2a00000) | |
6207 | # define movz_hw_R0 (0xd2c00000) | |
6208 | #else /*ARCH_SIZE == 32 */ | |
6209 | # define add_R0_R0 (0x11000000) | |
6210 | # define add_R0_R0_R1 (0x0b000020) | |
6211 | # define add_R0_R1 (0x11400020) | |
6212 | # define ldr_R0 (0x18000000) | |
6213 | # define ldr_R0_mask(i) (i & 0xbfffffe0) | |
6214 | # define ldr_R0_x0 (0xb9400000) | |
6215 | # define ldr_hw_R0 (0x72a00000) | |
6216 | # define movk_R0 (0x72800000) | |
6217 | # define movz_R0 (0x52a00000) | |
6218 | # define movz_hw_R0 (0x52c00000) | |
6219 | #endif | |
6220 | ||
9fca35fc TC |
6221 | /* Structure to hold payload for _bfd_aarch64_erratum_843419_clear_stub, |
6222 | it is used to identify the stub information to reset. */ | |
6223 | ||
6224 | struct erratum_843419_branch_to_stub_clear_data | |
6225 | { | |
6226 | bfd_vma adrp_offset; | |
6227 | asection *output_section; | |
6228 | }; | |
6229 | ||
6230 | /* Clear the erratum information for GEN_ENTRY if the ADRP_OFFSET and | |
6231 | section inside IN_ARG matches. The clearing is done by setting the | |
6232 | stub_type to none. */ | |
6233 | ||
6234 | static bfd_boolean | |
6235 | _bfd_aarch64_erratum_843419_clear_stub (struct bfd_hash_entry *gen_entry, | |
6236 | void *in_arg) | |
6237 | { | |
6238 | struct elf_aarch64_stub_hash_entry *stub_entry | |
6239 | = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
6240 | struct erratum_843419_branch_to_stub_clear_data *data | |
6241 | = (struct erratum_843419_branch_to_stub_clear_data *) in_arg; | |
6242 | ||
6243 | if (stub_entry->target_section != data->output_section | |
6244 | || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer | |
6245 | || stub_entry->adrp_offset != data->adrp_offset) | |
6246 | return TRUE; | |
6247 | ||
6248 | /* Change the stub type instead of removing the entry, removing from the hash | |
6249 | table would be slower and we have already reserved the memory for the entry | |
6250 | so there wouldn't be much gain. Changing the stub also keeps around a | |
6251 | record of what was there before. */ | |
6252 | stub_entry->stub_type = aarch64_stub_none; | |
6253 | ||
6254 | /* We're done and there could have been only one matching stub at that | |
6255 | particular offset, so abort further traversal. */ | |
6256 | return FALSE; | |
6257 | } | |
6258 | ||
6259 | /* TLS Relaxations may relax an adrp sequence that matches the erratum 843419 | |
6260 | sequence. In this case the erratum no longer applies and we need to remove | |
6261 | the entry from the pending stub generation. This clears matching adrp insn | |
6262 | at ADRP_OFFSET in INPUT_SECTION in the stub table defined in GLOBALS. */ | |
6263 | ||
6264 | static void | |
6265 | clear_erratum_843419_entry (struct elf_aarch64_link_hash_table *globals, | |
6266 | bfd_vma adrp_offset, asection *input_section) | |
6267 | { | |
739b5c9c | 6268 | if (globals->fix_erratum_843419 & ERRAT_ADRP) |
9fca35fc TC |
6269 | { |
6270 | struct erratum_843419_branch_to_stub_clear_data data; | |
6271 | data.adrp_offset = adrp_offset; | |
6272 | data.output_section = input_section; | |
6273 | ||
6274 | bfd_hash_traverse (&globals->stub_hash_table, | |
6275 | _bfd_aarch64_erratum_843419_clear_stub, &data); | |
6276 | } | |
6277 | } | |
6278 | ||
a06ea964 NC |
6279 | /* Handle TLS relaxations. Relaxing is possible for symbols that use |
6280 | R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static | |
6281 | link. | |
6282 | ||
6283 | Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller | |
6284 | is to then call final_link_relocate. Return other values in the | |
6285 | case of error. */ | |
6286 | ||
6287 | static bfd_reloc_status_type | |
cec5225b | 6288 | elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals, |
9fca35fc TC |
6289 | bfd *input_bfd, asection *input_section, |
6290 | bfd_byte *contents, Elf_Internal_Rela *rel, | |
6291 | struct elf_link_hash_entry *h) | |
a06ea964 NC |
6292 | { |
6293 | bfd_boolean is_local = h == NULL; | |
cec5225b | 6294 | unsigned int r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
6295 | unsigned long insn; |
6296 | ||
6297 | BFD_ASSERT (globals && input_bfd && contents && rel); | |
6298 | ||
0aa13fee | 6299 | switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type)) |
a06ea964 | 6300 | { |
a6bb11b2 | 6301 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 6302 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a06ea964 NC |
6303 | if (is_local) |
6304 | { | |
6305 | /* GD->LE relaxation: | |
2d0ca824 | 6306 | adrp x0, :tlsgd:var => movz R0, :tprel_g1:var |
a06ea964 | 6307 | or |
2d0ca824 YN |
6308 | adrp x0, :tlsdesc:var => movz R0, :tprel_g1:var |
6309 | ||
6310 | Where R is x for LP64, and w for ILP32. */ | |
6311 | bfd_putl32 (movz_R0, contents + rel->r_offset); | |
9fca35fc TC |
6312 | /* We have relaxed the adrp into a mov, we may have to clear any |
6313 | pending erratum fixes. */ | |
6314 | clear_erratum_843419_entry (globals, rel->r_offset, input_section); | |
a06ea964 NC |
6315 | return bfd_reloc_continue; |
6316 | } | |
6317 | else | |
6318 | { | |
6319 | /* GD->IE relaxation: | |
6320 | adrp x0, :tlsgd:var => adrp x0, :gottprel:var | |
6321 | or | |
6322 | adrp x0, :tlsdesc:var => adrp x0, :gottprel:var | |
6323 | */ | |
a06ea964 NC |
6324 | return bfd_reloc_continue; |
6325 | } | |
6326 | ||
389b8029 MS |
6327 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
6328 | BFD_ASSERT (0); | |
6329 | break; | |
6330 | ||
1ada945d MS |
6331 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
6332 | if (is_local) | |
6333 | { | |
6334 | /* Tiny TLSDESC->LE relaxation: | |
07d6d2b8 AM |
6335 | ldr x1, :tlsdesc:var => movz R0, #:tprel_g1:var |
6336 | adr x0, :tlsdesc:var => movk R0, #:tprel_g0_nc:var | |
1ada945d | 6337 | .tlsdesccall var |
07d6d2b8 | 6338 | blr x1 => nop |
2d0ca824 YN |
6339 | |
6340 | Where R is x for LP64, and w for ILP32. */ | |
1ada945d MS |
6341 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); |
6342 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
6343 | ||
6344 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
6345 | AARCH64_R (TLSLE_MOVW_TPREL_G0_NC)); | |
6346 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6347 | ||
2d0ca824 YN |
6348 | bfd_putl32 (movz_R0, contents + rel->r_offset); |
6349 | bfd_putl32 (movk_R0, contents + rel->r_offset + 4); | |
1ada945d MS |
6350 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); |
6351 | return bfd_reloc_continue; | |
6352 | } | |
6353 | else | |
6354 | { | |
6355 | /* Tiny TLSDESC->IE relaxation: | |
07d6d2b8 AM |
6356 | ldr x1, :tlsdesc:var => ldr x0, :gottprel:var |
6357 | adr x0, :tlsdesc:var => nop | |
1ada945d | 6358 | .tlsdesccall var |
07d6d2b8 | 6359 | blr x1 => nop |
1ada945d MS |
6360 | */ |
6361 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); | |
6362 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
6363 | ||
6364 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6365 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6366 | ||
2d0ca824 | 6367 | bfd_putl32 (ldr_R0, contents + rel->r_offset); |
1ada945d MS |
6368 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4); |
6369 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); | |
6370 | return bfd_reloc_continue; | |
6371 | } | |
6372 | ||
3c12b054 MS |
6373 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
6374 | if (is_local) | |
6375 | { | |
6376 | /* Tiny GD->LE relaxation: | |
07d6d2b8 AM |
6377 | adr x0, :tlsgd:var => mrs x1, tpidr_el0 |
6378 | bl __tls_get_addr => add R0, R1, #:tprel_hi12:x, lsl #12 | |
6379 | nop => add R0, R0, #:tprel_lo12_nc:x | |
2d0ca824 YN |
6380 | |
6381 | Where R is x for LP64, and x for Ilp32. */ | |
3c12b054 MS |
6382 | |
6383 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
6384 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6385 | ||
6386 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0); | |
2d0ca824 YN |
6387 | bfd_putl32 (add_R0_R1, contents + rel->r_offset + 4); |
6388 | bfd_putl32 (add_R0_R0, contents + rel->r_offset + 8); | |
3c12b054 MS |
6389 | |
6390 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
6391 | AARCH64_R (TLSLE_ADD_TPREL_LO12_NC)); | |
6392 | rel[1].r_offset = rel->r_offset + 8; | |
6393 | ||
6394 | /* Move the current relocation to the second instruction in | |
6395 | the sequence. */ | |
6396 | rel->r_offset += 4; | |
6397 | rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
6398 | AARCH64_R (TLSLE_ADD_TPREL_HI12)); | |
6399 | return bfd_reloc_continue; | |
6400 | } | |
6401 | else | |
6402 | { | |
6403 | /* Tiny GD->IE relaxation: | |
07d6d2b8 AM |
6404 | adr x0, :tlsgd:var => ldr R0, :gottprel:var |
6405 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6406 | nop => add R0, R0, R1 | |
2d0ca824 YN |
6407 | |
6408 | Where R is x for LP64, and w for Ilp32. */ | |
3c12b054 MS |
6409 | |
6410 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
6411 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6412 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6413 | ||
2d0ca824 | 6414 | bfd_putl32 (ldr_R0, contents + rel->r_offset); |
3c12b054 | 6415 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); |
2d0ca824 | 6416 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8); |
3c12b054 MS |
6417 | return bfd_reloc_continue; |
6418 | } | |
6419 | ||
ac734732 RL |
6420 | #if ARCH_SIZE == 64 |
6421 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: | |
6422 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSGD_MOVW_G0_NC)); | |
6423 | BFD_ASSERT (rel->r_offset + 12 == rel[2].r_offset); | |
6424 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (CALL26)); | |
6425 | ||
6426 | if (is_local) | |
6427 | { | |
6428 | /* Large GD->LE relaxation: | |
07d6d2b8 | 6429 | movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32 |
ac734732 | 6430 | movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16 |
07d6d2b8 AM |
6431 | add x0, gp, x0 => movk x0, #:tprel_g0_nc:var |
6432 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6433 | nop => add x0, x0, x1 | |
ac734732 RL |
6434 | */ |
6435 | rel[2].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
6436 | AARCH64_R (TLSLE_MOVW_TPREL_G0_NC)); | |
6437 | rel[2].r_offset = rel->r_offset + 8; | |
6438 | ||
2d0ca824 YN |
6439 | bfd_putl32 (movz_hw_R0, contents + rel->r_offset + 0); |
6440 | bfd_putl32 (ldr_hw_R0, contents + rel->r_offset + 4); | |
6441 | bfd_putl32 (movk_R0, contents + rel->r_offset + 8); | |
ac734732 | 6442 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12); |
2d0ca824 | 6443 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16); |
ac734732 RL |
6444 | } |
6445 | else | |
6446 | { | |
6447 | /* Large GD->IE relaxation: | |
07d6d2b8 | 6448 | movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16 |
ac734732 | 6449 | movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var |
07d6d2b8 AM |
6450 | add x0, gp, x0 => ldr x0, [gp, x0] |
6451 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6452 | nop => add x0, x0, x1 | |
ac734732 RL |
6453 | */ |
6454 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6455 | bfd_putl32 (0xd2a80000, contents + rel->r_offset + 0); | |
2d0ca824 | 6456 | bfd_putl32 (ldr_R0, contents + rel->r_offset + 8); |
ac734732 | 6457 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12); |
2d0ca824 | 6458 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16); |
ac734732 RL |
6459 | } |
6460 | return bfd_reloc_continue; | |
6461 | ||
6462 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: | |
6463 | return bfd_reloc_continue; | |
6464 | #endif | |
6465 | ||
043bf05a MS |
6466 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
6467 | return bfd_reloc_continue; | |
6468 | ||
a6bb11b2 | 6469 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
a06ea964 NC |
6470 | if (is_local) |
6471 | { | |
6472 | /* GD->LE relaxation: | |
6473 | ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var | |
2d0ca824 YN |
6474 | |
6475 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
6476 | bfd_putl32 (movk_R0, contents + rel->r_offset); | |
a06ea964 NC |
6477 | return bfd_reloc_continue; |
6478 | } | |
6479 | else | |
6480 | { | |
6481 | /* GD->IE relaxation: | |
2d0ca824 YN |
6482 | ldr xd, [x0, #:tlsdesc_lo12:var] => ldr R0, [x0, #:gottprel_lo12:var] |
6483 | ||
6484 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 | 6485 | insn = bfd_getl32 (contents + rel->r_offset); |
2d0ca824 | 6486 | bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset); |
a06ea964 NC |
6487 | return bfd_reloc_continue; |
6488 | } | |
6489 | ||
a6bb11b2 | 6490 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a06ea964 NC |
6491 | if (is_local) |
6492 | { | |
6493 | /* GD->LE relaxation | |
07d6d2b8 AM |
6494 | add x0, #:tlsgd_lo12:var => movk R0, :tprel_g0_nc:var |
6495 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6496 | nop => add R0, R1, R0 | |
2d0ca824 YN |
6497 | |
6498 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 NC |
6499 | |
6500 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
6501 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
cec5225b | 6502 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 | 6503 | |
2d0ca824 | 6504 | bfd_putl32 (movk_R0, contents + rel->r_offset); |
a06ea964 | 6505 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); |
2d0ca824 | 6506 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8); |
a06ea964 NC |
6507 | return bfd_reloc_continue; |
6508 | } | |
6509 | else | |
6510 | { | |
6511 | /* GD->IE relaxation | |
07d6d2b8 AM |
6512 | ADD x0, #:tlsgd_lo12:var => ldr R0, [x0, #:gottprel_lo12:var] |
6513 | BL __tls_get_addr => mrs x1, tpidr_el0 | |
a06ea964 | 6514 | R_AARCH64_CALL26 |
07d6d2b8 | 6515 | NOP => add R0, R1, R0 |
5cd1d8bc YN |
6516 | |
6517 | Where R is x for lp64 mode, and w for ilp32 mode. */ | |
a06ea964 | 6518 | |
a6bb11b2 | 6519 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); |
a06ea964 NC |
6520 | |
6521 | /* Remove the relocation on the BL instruction. */ | |
cec5225b | 6522 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 | 6523 | |
a06ea964 NC |
6524 | /* We choose to fixup the BL and NOP instructions using the |
6525 | offset from the second relocation to allow flexibility in | |
6526 | scheduling instructions between the ADD and BL. */ | |
2d0ca824 | 6527 | bfd_putl32 (ldr_R0_x0, contents + rel->r_offset); |
5cd1d8bc | 6528 | bfd_putl32 (0xd53bd041, contents + rel[1].r_offset); |
2d0ca824 | 6529 | bfd_putl32 (add_R0_R0_R1, contents + rel[1].r_offset + 4); |
a06ea964 NC |
6530 | return bfd_reloc_continue; |
6531 | } | |
6532 | ||
0484b454 | 6533 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
f955cccf | 6534 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 6535 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a06ea964 | 6536 | /* GD->IE/LE relaxation: |
07d6d2b8 AM |
6537 | add x0, x0, #:tlsdesc_lo12:var => nop |
6538 | blr xd => nop | |
a06ea964 NC |
6539 | */ |
6540 | bfd_putl32 (INSN_NOP, contents + rel->r_offset); | |
6541 | return bfd_reloc_ok; | |
6542 | ||
0484b454 RL |
6543 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
6544 | if (is_local) | |
6545 | { | |
6546 | /* GD->LE relaxation: | |
2d0ca824 YN |
6547 | ldr xd, [gp, xn] => movk R0, #:tprel_g0_nc:var |
6548 | ||
6549 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
6550 | bfd_putl32 (movk_R0, contents + rel->r_offset); | |
0484b454 RL |
6551 | return bfd_reloc_continue; |
6552 | } | |
6553 | else | |
6554 | { | |
6555 | /* GD->IE relaxation: | |
2d0ca824 YN |
6556 | ldr xd, [gp, xn] => ldr R0, [gp, xn] |
6557 | ||
6558 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
0484b454 | 6559 | insn = bfd_getl32 (contents + rel->r_offset); |
2d0ca824 | 6560 | bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset); |
0484b454 RL |
6561 | return bfd_reloc_ok; |
6562 | } | |
6563 | ||
6564 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
6565 | /* GD->LE relaxation: | |
2d0ca824 | 6566 | movk xd, #:tlsdesc_off_g0_nc:var => movk R0, #:tprel_g1_nc:var, lsl #16 |
0484b454 | 6567 | GD->IE relaxation: |
2d0ca824 YN |
6568 | movk xd, #:tlsdesc_off_g0_nc:var => movk Rd, #:gottprel_g0_nc:var |
6569 | ||
6570 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
0484b454 | 6571 | if (is_local) |
2d0ca824 | 6572 | bfd_putl32 (ldr_hw_R0, contents + rel->r_offset); |
0484b454 RL |
6573 | return bfd_reloc_continue; |
6574 | ||
6575 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
6576 | if (is_local) | |
6577 | { | |
6578 | /* GD->LE relaxation: | |
2d0ca824 YN |
6579 | movz xd, #:tlsdesc_off_g1:var => movz R0, #:tprel_g2:var, lsl #32 |
6580 | ||
6581 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
6582 | bfd_putl32 (movz_hw_R0, contents + rel->r_offset); | |
0484b454 RL |
6583 | return bfd_reloc_continue; |
6584 | } | |
6585 | else | |
6586 | { | |
6587 | /* GD->IE relaxation: | |
2d0ca824 YN |
6588 | movz xd, #:tlsdesc_off_g1:var => movz Rd, #:gottprel_g1:var, lsl #16 |
6589 | ||
6590 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
0484b454 | 6591 | insn = bfd_getl32 (contents + rel->r_offset); |
2d0ca824 | 6592 | bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset); |
0484b454 RL |
6593 | return bfd_reloc_continue; |
6594 | } | |
6595 | ||
a6bb11b2 | 6596 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a06ea964 | 6597 | /* IE->LE relaxation: |
07d6d2b8 | 6598 | adrp xd, :gottprel:var => movz Rd, :tprel_g1:var |
2d0ca824 YN |
6599 | |
6600 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 NC |
6601 | if (is_local) |
6602 | { | |
6603 | insn = bfd_getl32 (contents + rel->r_offset); | |
2d0ca824 | 6604 | bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset); |
9fca35fc TC |
6605 | /* We have relaxed the adrp into a mov, we may have to clear any |
6606 | pending erratum fixes. */ | |
6607 | clear_erratum_843419_entry (globals, rel->r_offset, input_section); | |
a06ea964 NC |
6608 | } |
6609 | return bfd_reloc_continue; | |
6610 | ||
a6bb11b2 | 6611 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: |
a06ea964 | 6612 | /* IE->LE relaxation: |
07d6d2b8 | 6613 | ldr xd, [xm, #:gottprel_lo12:var] => movk Rd, :tprel_g0_nc:var |
2d0ca824 YN |
6614 | |
6615 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 NC |
6616 | if (is_local) |
6617 | { | |
6618 | insn = bfd_getl32 (contents + rel->r_offset); | |
2d0ca824 | 6619 | bfd_putl32 (movk_R0 | (insn & 0x1f), contents + rel->r_offset); |
a06ea964 NC |
6620 | } |
6621 | return bfd_reloc_continue; | |
6622 | ||
259364ad JW |
6623 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
6624 | /* LD->LE relaxation (tiny): | |
6625 | adr x0, :tlsldm:x => mrs x0, tpidr_el0 | |
c1fc2d7e YN |
6626 | bl __tls_get_addr => add R0, R0, TCB_SIZE |
6627 | ||
6628 | Where R is x for lp64 mode, and w for ilp32 mode. */ | |
259364ad JW |
6629 | if (is_local) |
6630 | { | |
6631 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6632 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); | |
6633 | /* No need of CALL26 relocation for tls_get_addr. */ | |
6634 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6635 | bfd_putl32 (0xd53bd040, contents + rel->r_offset + 0); | |
2d0ca824 YN |
6636 | bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10), |
6637 | contents + rel->r_offset + 4); | |
259364ad JW |
6638 | return bfd_reloc_ok; |
6639 | } | |
6640 | return bfd_reloc_continue; | |
6641 | ||
6642 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: | |
6643 | /* LD->LE relaxation (small): | |
6644 | adrp x0, :tlsldm:x => mrs x0, tpidr_el0 | |
6645 | */ | |
6646 | if (is_local) | |
6647 | { | |
6648 | bfd_putl32 (0xd53bd040, contents + rel->r_offset); | |
6649 | return bfd_reloc_ok; | |
6650 | } | |
6651 | return bfd_reloc_continue; | |
6652 | ||
6653 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: | |
6654 | /* LD->LE relaxation (small): | |
c1fc2d7e | 6655 | add x0, #:tlsldm_lo12:x => add R0, R0, TCB_SIZE |
259364ad | 6656 | bl __tls_get_addr => nop |
c1fc2d7e YN |
6657 | |
6658 | Where R is x for lp64 mode, and w for ilp32 mode. */ | |
259364ad JW |
6659 | if (is_local) |
6660 | { | |
6661 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6662 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); | |
6663 | /* No need of CALL26 relocation for tls_get_addr. */ | |
6664 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
2d0ca824 YN |
6665 | bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10), |
6666 | contents + rel->r_offset + 0); | |
c1fc2d7e | 6667 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4); |
259364ad JW |
6668 | return bfd_reloc_ok; |
6669 | } | |
6670 | return bfd_reloc_continue; | |
6671 | ||
a06ea964 NC |
6672 | default: |
6673 | return bfd_reloc_continue; | |
6674 | } | |
6675 | ||
6676 | return bfd_reloc_ok; | |
6677 | } | |
6678 | ||
6679 | /* Relocate an AArch64 ELF section. */ | |
6680 | ||
6681 | static bfd_boolean | |
cec5225b | 6682 | elfNN_aarch64_relocate_section (bfd *output_bfd, |
a06ea964 NC |
6683 | struct bfd_link_info *info, |
6684 | bfd *input_bfd, | |
6685 | asection *input_section, | |
6686 | bfd_byte *contents, | |
6687 | Elf_Internal_Rela *relocs, | |
6688 | Elf_Internal_Sym *local_syms, | |
6689 | asection **local_sections) | |
6690 | { | |
6691 | Elf_Internal_Shdr *symtab_hdr; | |
6692 | struct elf_link_hash_entry **sym_hashes; | |
6693 | Elf_Internal_Rela *rel; | |
6694 | Elf_Internal_Rela *relend; | |
6695 | const char *name; | |
cec5225b | 6696 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 NC |
6697 | bfd_boolean save_addend = FALSE; |
6698 | bfd_vma addend = 0; | |
6699 | ||
cec5225b | 6700 | globals = elf_aarch64_hash_table (info); |
a06ea964 NC |
6701 | |
6702 | symtab_hdr = &elf_symtab_hdr (input_bfd); | |
6703 | sym_hashes = elf_sym_hashes (input_bfd); | |
6704 | ||
6705 | rel = relocs; | |
6706 | relend = relocs + input_section->reloc_count; | |
6707 | for (; rel < relend; rel++) | |
6708 | { | |
6709 | unsigned int r_type; | |
a6bb11b2 YZ |
6710 | bfd_reloc_code_real_type bfd_r_type; |
6711 | bfd_reloc_code_real_type relaxed_bfd_r_type; | |
a06ea964 NC |
6712 | reloc_howto_type *howto; |
6713 | unsigned long r_symndx; | |
6714 | Elf_Internal_Sym *sym; | |
6715 | asection *sec; | |
6716 | struct elf_link_hash_entry *h; | |
6717 | bfd_vma relocation; | |
6718 | bfd_reloc_status_type r; | |
6719 | arelent bfd_reloc; | |
6720 | char sym_type; | |
6721 | bfd_boolean unresolved_reloc = FALSE; | |
6722 | char *error_message = NULL; | |
6723 | ||
cec5225b YZ |
6724 | r_symndx = ELFNN_R_SYM (rel->r_info); |
6725 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 | 6726 | |
0aa13fee AM |
6727 | bfd_reloc.howto = elfNN_aarch64_howto_from_type (input_bfd, r_type); |
6728 | howto = bfd_reloc.howto; | |
a06ea964 | 6729 | |
7fcfd62d | 6730 | if (howto == NULL) |
47aeb64c NC |
6731 | return _bfd_unrecognized_reloc (input_bfd, input_section, r_type); |
6732 | ||
a6bb11b2 | 6733 | bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto); |
7fcfd62d | 6734 | |
a06ea964 NC |
6735 | h = NULL; |
6736 | sym = NULL; | |
6737 | sec = NULL; | |
6738 | ||
6739 | if (r_symndx < symtab_hdr->sh_info) | |
6740 | { | |
6741 | sym = local_syms + r_symndx; | |
cec5225b | 6742 | sym_type = ELFNN_ST_TYPE (sym->st_info); |
a06ea964 NC |
6743 | sec = local_sections[r_symndx]; |
6744 | ||
6745 | /* An object file might have a reference to a local | |
6746 | undefined symbol. This is a daft object file, but we | |
6747 | should at least do something about it. */ | |
6748 | if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL | |
6749 | && bfd_is_und_section (sec) | |
6750 | && ELF_ST_BIND (sym->st_info) != STB_WEAK) | |
1a72702b AM |
6751 | (*info->callbacks->undefined_symbol) |
6752 | (info, bfd_elf_string_from_elf_section | |
6753 | (input_bfd, symtab_hdr->sh_link, sym->st_name), | |
6754 | input_bfd, input_section, rel->r_offset, TRUE); | |
a06ea964 | 6755 | |
a06ea964 | 6756 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
1419bbe5 WN |
6757 | |
6758 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
0e1862bb | 6759 | if (!bfd_link_relocatable (info) |
1419bbe5 WN |
6760 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
6761 | { | |
6762 | h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd, | |
6763 | rel, FALSE); | |
6764 | if (h == NULL) | |
6765 | abort (); | |
6766 | ||
6767 | /* Set STT_GNU_IFUNC symbol value. */ | |
6768 | h->root.u.def.value = sym->st_value; | |
6769 | h->root.u.def.section = sec; | |
6770 | } | |
a06ea964 NC |
6771 | } |
6772 | else | |
6773 | { | |
62d887d4 | 6774 | bfd_boolean warned, ignored; |
a06ea964 NC |
6775 | |
6776 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
6777 | r_symndx, symtab_hdr, sym_hashes, | |
6778 | h, sec, relocation, | |
62d887d4 | 6779 | unresolved_reloc, warned, ignored); |
a06ea964 NC |
6780 | |
6781 | sym_type = h->type; | |
6782 | } | |
6783 | ||
6784 | if (sec != NULL && discarded_section (sec)) | |
6785 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
6786 | rel, 1, relend, howto, 0, contents); | |
6787 | ||
0e1862bb | 6788 | if (bfd_link_relocatable (info)) |
2e0488d3 | 6789 | continue; |
a06ea964 NC |
6790 | |
6791 | if (h != NULL) | |
6792 | name = h->root.root.string; | |
6793 | else | |
6794 | { | |
6795 | name = (bfd_elf_string_from_elf_section | |
6796 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
6797 | if (name == NULL || *name == '\0') | |
fd361982 | 6798 | name = bfd_section_name (sec); |
a06ea964 NC |
6799 | } |
6800 | ||
6801 | if (r_symndx != 0 | |
6802 | && r_type != R_AARCH64_NONE | |
6803 | && r_type != R_AARCH64_NULL | |
6804 | && (h == NULL | |
6805 | || h->root.type == bfd_link_hash_defined | |
6806 | || h->root.type == bfd_link_hash_defweak) | |
a6bb11b2 | 6807 | && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS)) |
a06ea964 | 6808 | { |
4eca0228 | 6809 | _bfd_error_handler |
a06ea964 | 6810 | ((sym_type == STT_TLS |
695344c0 | 6811 | /* xgettext:c-format */ |
2dcf00ce | 6812 | ? _("%pB(%pA+%#" PRIx64 "): %s used with TLS symbol %s") |
695344c0 | 6813 | /* xgettext:c-format */ |
2dcf00ce | 6814 | : _("%pB(%pA+%#" PRIx64 "): %s used with non-TLS symbol %s")), |
a06ea964 | 6815 | input_bfd, |
2dcf00ce | 6816 | input_section, (uint64_t) rel->r_offset, howto->name, name); |
a06ea964 NC |
6817 | } |
6818 | ||
a06ea964 | 6819 | /* We relax only if we can see that there can be a valid transition |
07d6d2b8 AM |
6820 | from a reloc type to another. |
6821 | We call elfNN_aarch64_final_link_relocate unless we're completely | |
6822 | done, i.e., the relaxation produced the final output we want. */ | |
a06ea964 | 6823 | |
a6bb11b2 YZ |
6824 | relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, |
6825 | h, r_symndx); | |
6826 | if (relaxed_bfd_r_type != bfd_r_type) | |
a06ea964 | 6827 | { |
a6bb11b2 YZ |
6828 | bfd_r_type = relaxed_bfd_r_type; |
6829 | howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type); | |
6830 | BFD_ASSERT (howto != NULL); | |
6831 | r_type = howto->type; | |
9fca35fc TC |
6832 | r = elfNN_aarch64_tls_relax (globals, input_bfd, input_section, |
6833 | contents, rel, h); | |
a06ea964 NC |
6834 | unresolved_reloc = 0; |
6835 | } | |
6836 | else | |
6837 | r = bfd_reloc_continue; | |
6838 | ||
6839 | /* There may be multiple consecutive relocations for the | |
07d6d2b8 AM |
6840 | same offset. In that case we are supposed to treat the |
6841 | output of each relocation as the addend for the next. */ | |
a06ea964 NC |
6842 | if (rel + 1 < relend |
6843 | && rel->r_offset == rel[1].r_offset | |
cec5225b YZ |
6844 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE |
6845 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL) | |
a06ea964 NC |
6846 | save_addend = TRUE; |
6847 | else | |
6848 | save_addend = FALSE; | |
6849 | ||
6850 | if (r == bfd_reloc_continue) | |
cec5225b | 6851 | r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd, |
a06ea964 NC |
6852 | input_section, contents, rel, |
6853 | relocation, info, sec, | |
6854 | h, &unresolved_reloc, | |
1419bbe5 | 6855 | save_addend, &addend, sym); |
a06ea964 | 6856 | |
0aa13fee | 6857 | switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type)) |
a06ea964 | 6858 | { |
ce336788 | 6859 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 6860 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 6861 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 6862 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 6863 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
73f925cc | 6864 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 6865 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 6866 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
6867 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
6868 | { | |
6869 | bfd_boolean need_relocs = FALSE; | |
6870 | bfd_byte *loc; | |
6871 | int indx; | |
6872 | bfd_vma off; | |
6873 | ||
6874 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
6875 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
6876 | ||
6877 | need_relocs = | |
6dda7875 | 6878 | (!bfd_link_executable (info) || indx != 0) && |
a06ea964 NC |
6879 | (h == NULL |
6880 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6881 | || h->root.type != bfd_link_hash_undefweak); | |
6882 | ||
6883 | BFD_ASSERT (globals->root.srelgot != NULL); | |
6884 | ||
6885 | if (need_relocs) | |
6886 | { | |
6887 | Elf_Internal_Rela rela; | |
a6bb11b2 | 6888 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD)); |
a06ea964 NC |
6889 | rela.r_addend = 0; |
6890 | rela.r_offset = globals->root.sgot->output_section->vma + | |
6891 | globals->root.sgot->output_offset + off; | |
6892 | ||
6893 | ||
6894 | loc = globals->root.srelgot->contents; | |
6895 | loc += globals->root.srelgot->reloc_count++ | |
6896 | * RELOC_SIZE (htab); | |
cec5225b | 6897 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 6898 | |
f69e4920 | 6899 | bfd_reloc_code_real_type real_type = |
0aa13fee | 6900 | elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
f69e4920 JW |
6901 | |
6902 | if (real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 | |
73f925cc JW |
6903 | || real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 |
6904 | || real_type == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC) | |
77a69ff8 JW |
6905 | { |
6906 | /* For local dynamic, don't generate DTPREL in any case. | |
6907 | Initialize the DTPREL slot into zero, so we get module | |
6908 | base address when invoke runtime TLS resolver. */ | |
6909 | bfd_put_NN (output_bfd, 0, | |
6910 | globals->root.sgot->contents + off | |
6911 | + GOT_ENTRY_SIZE); | |
6912 | } | |
6913 | else if (indx == 0) | |
a06ea964 | 6914 | { |
cec5225b | 6915 | bfd_put_NN (output_bfd, |
a06ea964 NC |
6916 | relocation - dtpoff_base (info), |
6917 | globals->root.sgot->contents + off | |
6918 | + GOT_ENTRY_SIZE); | |
6919 | } | |
6920 | else | |
6921 | { | |
6922 | /* This TLS symbol is global. We emit a | |
6923 | relocation to fixup the tls offset at load | |
6924 | time. */ | |
6925 | rela.r_info = | |
a6bb11b2 | 6926 | ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL)); |
a06ea964 NC |
6927 | rela.r_addend = 0; |
6928 | rela.r_offset = | |
6929 | (globals->root.sgot->output_section->vma | |
6930 | + globals->root.sgot->output_offset + off | |
6931 | + GOT_ENTRY_SIZE); | |
6932 | ||
6933 | loc = globals->root.srelgot->contents; | |
6934 | loc += globals->root.srelgot->reloc_count++ | |
6935 | * RELOC_SIZE (globals); | |
cec5225b YZ |
6936 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
6937 | bfd_put_NN (output_bfd, (bfd_vma) 0, | |
a06ea964 NC |
6938 | globals->root.sgot->contents + off |
6939 | + GOT_ENTRY_SIZE); | |
6940 | } | |
6941 | } | |
6942 | else | |
6943 | { | |
cec5225b | 6944 | bfd_put_NN (output_bfd, (bfd_vma) 1, |
a06ea964 | 6945 | globals->root.sgot->contents + off); |
cec5225b | 6946 | bfd_put_NN (output_bfd, |
a06ea964 NC |
6947 | relocation - dtpoff_base (info), |
6948 | globals->root.sgot->contents + off | |
6949 | + GOT_ENTRY_SIZE); | |
6950 | } | |
6951 | ||
6952 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
6953 | } | |
6954 | break; | |
6955 | ||
a6bb11b2 YZ |
6956 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
6957 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
043bf05a | 6958 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
6959 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
6960 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
a06ea964 NC |
6961 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
6962 | { | |
6963 | bfd_boolean need_relocs = FALSE; | |
6964 | bfd_byte *loc; | |
6965 | int indx; | |
6966 | bfd_vma off; | |
6967 | ||
6968 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
6969 | ||
6970 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
6971 | ||
6972 | need_relocs = | |
6dda7875 | 6973 | (!bfd_link_executable (info) || indx != 0) && |
a06ea964 NC |
6974 | (h == NULL |
6975 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6976 | || h->root.type != bfd_link_hash_undefweak); | |
6977 | ||
6978 | BFD_ASSERT (globals->root.srelgot != NULL); | |
6979 | ||
6980 | if (need_relocs) | |
6981 | { | |
6982 | Elf_Internal_Rela rela; | |
6983 | ||
6984 | if (indx == 0) | |
6985 | rela.r_addend = relocation - dtpoff_base (info); | |
6986 | else | |
6987 | rela.r_addend = 0; | |
6988 | ||
a6bb11b2 | 6989 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL)); |
a06ea964 NC |
6990 | rela.r_offset = globals->root.sgot->output_section->vma + |
6991 | globals->root.sgot->output_offset + off; | |
6992 | ||
6993 | loc = globals->root.srelgot->contents; | |
6994 | loc += globals->root.srelgot->reloc_count++ | |
6995 | * RELOC_SIZE (htab); | |
6996 | ||
cec5225b | 6997 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 6998 | |
cec5225b | 6999 | bfd_put_NN (output_bfd, rela.r_addend, |
a06ea964 NC |
7000 | globals->root.sgot->contents + off); |
7001 | } | |
7002 | else | |
cec5225b | 7003 | bfd_put_NN (output_bfd, relocation - tpoff_base (info), |
a06ea964 NC |
7004 | globals->root.sgot->contents + off); |
7005 | ||
7006 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
7007 | } | |
7008 | break; | |
7009 | ||
f955cccf | 7010 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 7011 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 7012 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 7013 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
1ada945d | 7014 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
7015 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
7016 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a06ea964 NC |
7017 | if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx)) |
7018 | { | |
7019 | bfd_boolean need_relocs = FALSE; | |
7020 | int indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
7021 | bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx); | |
7022 | ||
7023 | need_relocs = (h == NULL | |
7024 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7025 | || h->root.type != bfd_link_hash_undefweak); | |
7026 | ||
7027 | BFD_ASSERT (globals->root.srelgot != NULL); | |
7028 | BFD_ASSERT (globals->root.sgot != NULL); | |
7029 | ||
7030 | if (need_relocs) | |
7031 | { | |
7032 | bfd_byte *loc; | |
7033 | Elf_Internal_Rela rela; | |
a6bb11b2 YZ |
7034 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC)); |
7035 | ||
a06ea964 NC |
7036 | rela.r_addend = 0; |
7037 | rela.r_offset = (globals->root.sgotplt->output_section->vma | |
7038 | + globals->root.sgotplt->output_offset | |
7039 | + off + globals->sgotplt_jump_table_size); | |
7040 | ||
7041 | if (indx == 0) | |
7042 | rela.r_addend = relocation - dtpoff_base (info); | |
7043 | ||
7044 | /* Allocate the next available slot in the PLT reloc | |
7045 | section to hold our R_AARCH64_TLSDESC, the next | |
7046 | available slot is determined from reloc_count, | |
7047 | which we step. But note, reloc_count was | |
7048 | artifically moved down while allocating slots for | |
7049 | real PLT relocs such that all of the PLT relocs | |
7050 | will fit above the initial reloc_count and the | |
7051 | extra stuff will fit below. */ | |
7052 | loc = globals->root.srelplt->contents; | |
7053 | loc += globals->root.srelplt->reloc_count++ | |
7054 | * RELOC_SIZE (globals); | |
7055 | ||
cec5225b | 7056 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 7057 | |
cec5225b | 7058 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
7059 | globals->root.sgotplt->contents + off + |
7060 | globals->sgotplt_jump_table_size); | |
cec5225b | 7061 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
7062 | globals->root.sgotplt->contents + off + |
7063 | globals->sgotplt_jump_table_size + | |
7064 | GOT_ENTRY_SIZE); | |
7065 | } | |
7066 | ||
7067 | symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx); | |
7068 | } | |
7069 | break; | |
a6bb11b2 YZ |
7070 | default: |
7071 | break; | |
a06ea964 NC |
7072 | } |
7073 | ||
a06ea964 | 7074 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
07d6d2b8 AM |
7075 | because such sections are not SEC_ALLOC and thus ld.so will |
7076 | not process them. */ | |
a06ea964 NC |
7077 | if (unresolved_reloc |
7078 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
7079 | && h->def_dynamic) | |
7080 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
7081 | +rel->r_offset) != (bfd_vma) - 1) | |
7082 | { | |
4eca0228 | 7083 | _bfd_error_handler |
695344c0 | 7084 | /* xgettext:c-format */ |
2dcf00ce AM |
7085 | (_("%pB(%pA+%#" PRIx64 "): " |
7086 | "unresolvable %s relocation against symbol `%s'"), | |
7087 | input_bfd, input_section, (uint64_t) rel->r_offset, howto->name, | |
a06ea964 NC |
7088 | h->root.root.string); |
7089 | return FALSE; | |
7090 | } | |
7091 | ||
7092 | if (r != bfd_reloc_ok && r != bfd_reloc_continue) | |
7093 | { | |
c674f5cd | 7094 | bfd_reloc_code_real_type real_r_type |
0aa13fee | 7095 | = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
c674f5cd | 7096 | |
a06ea964 NC |
7097 | switch (r) |
7098 | { | |
7099 | case bfd_reloc_overflow: | |
1a72702b AM |
7100 | (*info->callbacks->reloc_overflow) |
7101 | (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, | |
7102 | input_bfd, input_section, rel->r_offset); | |
c674f5cd JW |
7103 | if (real_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
7104 | || real_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
7105 | { | |
7106 | (*info->callbacks->warning) | |
7107 | (info, | |
90b6238f | 7108 | _("too many GOT entries for -fpic, " |
c674f5cd JW |
7109 | "please recompile with -fPIC"), |
7110 | name, input_bfd, input_section, rel->r_offset); | |
7111 | return FALSE; | |
7112 | } | |
027e9c75 NC |
7113 | /* Overflow can occur when a variable is referenced with a type |
7114 | that has a larger alignment than the type with which it was | |
7115 | declared. eg: | |
7116 | file1.c: extern int foo; int a (void) { return foo; } | |
7117 | file2.c: char bar, foo, baz; | |
7118 | If the variable is placed into a data section at an offset | |
7119 | that is incompatible with the larger alignment requirement | |
7120 | overflow will occur. (Strictly speaking this is not overflow | |
7121 | but rather an alignment problem, but the bfd_reloc_ error | |
7122 | enum does not have a value to cover that situation). | |
7123 | ||
7124 | Try to catch this situation here and provide a more helpful | |
7125 | error message to the user. */ | |
7126 | if (addend & ((1 << howto->rightshift) - 1) | |
7127 | /* FIXME: Are we testing all of the appropriate reloc | |
7128 | types here ? */ | |
7129 | && (real_r_type == BFD_RELOC_AARCH64_LD_LO19_PCREL | |
7130 | || real_r_type == BFD_RELOC_AARCH64_LDST16_LO12 | |
7131 | || real_r_type == BFD_RELOC_AARCH64_LDST32_LO12 | |
7132 | || real_r_type == BFD_RELOC_AARCH64_LDST64_LO12 | |
7133 | || real_r_type == BFD_RELOC_AARCH64_LDST128_LO12)) | |
7134 | { | |
7135 | info->callbacks->warning | |
90b6238f | 7136 | (info, _("one possible cause of this error is that the \ |
027e9c75 | 7137 | symbol is being referenced in the indicated code as if it had a larger \ |
90b6238f | 7138 | alignment than was declared where it was defined"), |
027e9c75 NC |
7139 | name, input_bfd, input_section, rel->r_offset); |
7140 | } | |
a06ea964 NC |
7141 | break; |
7142 | ||
7143 | case bfd_reloc_undefined: | |
1a72702b AM |
7144 | (*info->callbacks->undefined_symbol) |
7145 | (info, name, input_bfd, input_section, rel->r_offset, TRUE); | |
a06ea964 NC |
7146 | break; |
7147 | ||
7148 | case bfd_reloc_outofrange: | |
7149 | error_message = _("out of range"); | |
7150 | goto common_error; | |
7151 | ||
7152 | case bfd_reloc_notsupported: | |
7153 | error_message = _("unsupported relocation"); | |
7154 | goto common_error; | |
7155 | ||
7156 | case bfd_reloc_dangerous: | |
7157 | /* error_message should already be set. */ | |
7158 | goto common_error; | |
7159 | ||
7160 | default: | |
7161 | error_message = _("unknown error"); | |
7162 | /* Fall through. */ | |
7163 | ||
7164 | common_error: | |
7165 | BFD_ASSERT (error_message != NULL); | |
1a72702b AM |
7166 | (*info->callbacks->reloc_dangerous) |
7167 | (info, error_message, input_bfd, input_section, rel->r_offset); | |
a06ea964 NC |
7168 | break; |
7169 | } | |
7170 | } | |
027e9c75 NC |
7171 | |
7172 | if (!save_addend) | |
7173 | addend = 0; | |
a06ea964 NC |
7174 | } |
7175 | ||
7176 | return TRUE; | |
7177 | } | |
7178 | ||
7179 | /* Set the right machine number. */ | |
7180 | ||
7181 | static bfd_boolean | |
cec5225b | 7182 | elfNN_aarch64_object_p (bfd *abfd) |
a06ea964 | 7183 | { |
cec5225b YZ |
7184 | #if ARCH_SIZE == 32 |
7185 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32); | |
7186 | #else | |
a06ea964 | 7187 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64); |
cec5225b | 7188 | #endif |
a06ea964 NC |
7189 | return TRUE; |
7190 | } | |
7191 | ||
7192 | /* Function to keep AArch64 specific flags in the ELF header. */ | |
7193 | ||
7194 | static bfd_boolean | |
cec5225b | 7195 | elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags) |
a06ea964 NC |
7196 | { |
7197 | if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags) | |
7198 | { | |
7199 | } | |
7200 | else | |
7201 | { | |
7202 | elf_elfheader (abfd)->e_flags = flags; | |
7203 | elf_flags_init (abfd) = TRUE; | |
7204 | } | |
7205 | ||
7206 | return TRUE; | |
7207 | } | |
7208 | ||
a06ea964 NC |
7209 | /* Merge backend specific data from an object file to the output |
7210 | object file when linking. */ | |
7211 | ||
7212 | static bfd_boolean | |
50e03d47 | 7213 | elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
a06ea964 | 7214 | { |
50e03d47 | 7215 | bfd *obfd = info->output_bfd; |
a06ea964 NC |
7216 | flagword out_flags; |
7217 | flagword in_flags; | |
7218 | bfd_boolean flags_compatible = TRUE; | |
7219 | asection *sec; | |
7220 | ||
7221 | /* Check if we have the same endianess. */ | |
50e03d47 | 7222 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
a06ea964 NC |
7223 | return FALSE; |
7224 | ||
7225 | if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd)) | |
7226 | return TRUE; | |
7227 | ||
7228 | /* The input BFD must have had its flags initialised. */ | |
7229 | /* The following seems bogus to me -- The flags are initialized in | |
7230 | the assembler but I don't think an elf_flags_init field is | |
7231 | written into the object. */ | |
7232 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ | |
7233 | ||
7234 | in_flags = elf_elfheader (ibfd)->e_flags; | |
7235 | out_flags = elf_elfheader (obfd)->e_flags; | |
7236 | ||
7237 | if (!elf_flags_init (obfd)) | |
7238 | { | |
7239 | /* If the input is the default architecture and had the default | |
07d6d2b8 AM |
7240 | flags then do not bother setting the flags for the output |
7241 | architecture, instead allow future merges to do this. If no | |
7242 | future merges ever set these flags then they will retain their | |
7243 | uninitialised values, which surprise surprise, correspond | |
7244 | to the default values. */ | |
a06ea964 NC |
7245 | if (bfd_get_arch_info (ibfd)->the_default |
7246 | && elf_elfheader (ibfd)->e_flags == 0) | |
7247 | return TRUE; | |
7248 | ||
7249 | elf_flags_init (obfd) = TRUE; | |
7250 | elf_elfheader (obfd)->e_flags = in_flags; | |
7251 | ||
7252 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
7253 | && bfd_get_arch_info (obfd)->the_default) | |
7254 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
7255 | bfd_get_mach (ibfd)); | |
7256 | ||
7257 | return TRUE; | |
7258 | } | |
7259 | ||
7260 | /* Identical flags must be compatible. */ | |
7261 | if (in_flags == out_flags) | |
7262 | return TRUE; | |
7263 | ||
7264 | /* Check to see if the input BFD actually contains any sections. If | |
7265 | not, its flags may not have been initialised either, but it | |
7266 | cannot actually cause any incompatiblity. Do not short-circuit | |
7267 | dynamic objects; their section list may be emptied by | |
7268 | elf_link_add_object_symbols. | |
7269 | ||
7270 | Also check to see if there are no code sections in the input. | |
7271 | In this case there is no need to check for code specific flags. | |
7272 | XXX - do we need to worry about floating-point format compatability | |
7273 | in data sections ? */ | |
7274 | if (!(ibfd->flags & DYNAMIC)) | |
7275 | { | |
7276 | bfd_boolean null_input_bfd = TRUE; | |
7277 | bfd_boolean only_data_sections = TRUE; | |
7278 | ||
7279 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7280 | { | |
fd361982 | 7281 | if ((bfd_section_flags (sec) |
a06ea964 NC |
7282 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) |
7283 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
7284 | only_data_sections = FALSE; | |
7285 | ||
7286 | null_input_bfd = FALSE; | |
7287 | break; | |
7288 | } | |
7289 | ||
7290 | if (null_input_bfd || only_data_sections) | |
7291 | return TRUE; | |
7292 | } | |
7293 | ||
7294 | return flags_compatible; | |
7295 | } | |
7296 | ||
7297 | /* Display the flags field. */ | |
7298 | ||
7299 | static bfd_boolean | |
cec5225b | 7300 | elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr) |
a06ea964 NC |
7301 | { |
7302 | FILE *file = (FILE *) ptr; | |
7303 | unsigned long flags; | |
7304 | ||
7305 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
7306 | ||
7307 | /* Print normal ELF private data. */ | |
7308 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
7309 | ||
7310 | flags = elf_elfheader (abfd)->e_flags; | |
7311 | /* Ignore init flag - it may not be set, despite the flags field | |
7312 | containing valid data. */ | |
7313 | ||
7314 | /* xgettext:c-format */ | |
7315 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
7316 | ||
7317 | if (flags) | |
7318 | fprintf (file, _("<Unrecognised flag bits set>")); | |
7319 | ||
7320 | fputc ('\n', file); | |
7321 | ||
7322 | return TRUE; | |
7323 | } | |
7324 | ||
63c1f59d AM |
7325 | /* Find dynamic relocs for H that apply to read-only sections. */ |
7326 | ||
7327 | static asection * | |
7328 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
7329 | { | |
7330 | struct elf_dyn_relocs *p; | |
7331 | ||
7332 | for (p = elf_aarch64_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
7333 | { | |
7334 | asection *s = p->sec->output_section; | |
7335 | ||
7336 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7337 | return p->sec; | |
7338 | } | |
7339 | return NULL; | |
7340 | } | |
7341 | ||
6353d82b JW |
7342 | /* Return true if we need copy relocation against EH. */ |
7343 | ||
7344 | static bfd_boolean | |
7345 | need_copy_relocation_p (struct elf_aarch64_link_hash_entry *eh) | |
7346 | { | |
7347 | struct elf_dyn_relocs *p; | |
7348 | asection *s; | |
7349 | ||
7350 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7351 | { | |
7352 | /* If there is any pc-relative reference, we need to keep copy relocation | |
7353 | to avoid propagating the relocation into runtime that current glibc | |
7354 | does not support. */ | |
7355 | if (p->pc_count) | |
7356 | return TRUE; | |
7357 | ||
7358 | s = p->sec->output_section; | |
7359 | /* Need copy relocation if it's against read-only section. */ | |
7360 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7361 | return TRUE; | |
7362 | } | |
7363 | ||
7364 | return FALSE; | |
7365 | } | |
7366 | ||
a06ea964 NC |
7367 | /* Adjust a symbol defined by a dynamic object and referenced by a |
7368 | regular object. The current definition is in some section of the | |
7369 | dynamic object, but we're not including those sections. We have to | |
7370 | change the definition to something the rest of the link can | |
7371 | understand. */ | |
7372 | ||
7373 | static bfd_boolean | |
cec5225b | 7374 | elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info, |
a06ea964 NC |
7375 | struct elf_link_hash_entry *h) |
7376 | { | |
cec5225b | 7377 | struct elf_aarch64_link_hash_table *htab; |
5474d94f | 7378 | asection *s, *srel; |
a06ea964 NC |
7379 | |
7380 | /* If this is a function, put it in the procedure linkage table. We | |
7381 | will fill in the contents of the procedure linkage table later, | |
7382 | when we know the address of the .got section. */ | |
1419bbe5 | 7383 | if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt) |
a06ea964 NC |
7384 | { |
7385 | if (h->plt.refcount <= 0 | |
1419bbe5 WN |
7386 | || (h->type != STT_GNU_IFUNC |
7387 | && (SYMBOL_CALLS_LOCAL (info, h) | |
7388 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
7389 | && h->root.type == bfd_link_hash_undefweak)))) | |
a06ea964 NC |
7390 | { |
7391 | /* This case can occur if we saw a CALL26 reloc in | |
7392 | an input file, but the symbol wasn't referred to | |
7393 | by a dynamic object or all references were | |
7394 | garbage collected. In which case we can end up | |
7395 | resolving. */ | |
7396 | h->plt.offset = (bfd_vma) - 1; | |
7397 | h->needs_plt = 0; | |
7398 | } | |
7399 | ||
7400 | return TRUE; | |
7401 | } | |
7402 | else | |
80de0c6d | 7403 | /* Otherwise, reset to -1. */ |
a06ea964 NC |
7404 | h->plt.offset = (bfd_vma) - 1; |
7405 | ||
7406 | ||
7407 | /* If this is a weak symbol, and there is a real definition, the | |
7408 | processor independent code will have arranged for us to see the | |
7409 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 7410 | if (h->is_weakalias) |
a06ea964 | 7411 | { |
60d67dc8 AM |
7412 | struct elf_link_hash_entry *def = weakdef (h); |
7413 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
7414 | h->root.u.def.section = def->root.u.def.section; | |
7415 | h->root.u.def.value = def->root.u.def.value; | |
a06ea964 | 7416 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
60d67dc8 | 7417 | h->non_got_ref = def->non_got_ref; |
a06ea964 NC |
7418 | return TRUE; |
7419 | } | |
7420 | ||
7421 | /* If we are creating a shared library, we must presume that the | |
7422 | only references to the symbol are via the global offset table. | |
7423 | For such cases we need not do anything here; the relocations will | |
7424 | be handled correctly by relocate_section. */ | |
0e1862bb | 7425 | if (bfd_link_pic (info)) |
a06ea964 NC |
7426 | return TRUE; |
7427 | ||
7428 | /* If there are no references to this symbol that do not use the | |
7429 | GOT, we don't need to generate a copy reloc. */ | |
7430 | if (!h->non_got_ref) | |
7431 | return TRUE; | |
7432 | ||
7433 | /* If -z nocopyreloc was given, we won't generate them either. */ | |
7434 | if (info->nocopyreloc) | |
7435 | { | |
7436 | h->non_got_ref = 0; | |
7437 | return TRUE; | |
7438 | } | |
7439 | ||
6353d82b JW |
7440 | if (ELIMINATE_COPY_RELOCS) |
7441 | { | |
7442 | struct elf_aarch64_link_hash_entry *eh; | |
dce2246a | 7443 | /* If we don't find any dynamic relocs in read-only sections, then |
6353d82b JW |
7444 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
7445 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
7446 | if (!need_copy_relocation_p (eh)) | |
7447 | { | |
7448 | h->non_got_ref = 0; | |
7449 | return TRUE; | |
7450 | } | |
7451 | } | |
7452 | ||
a06ea964 NC |
7453 | /* We must allocate the symbol in our .dynbss section, which will |
7454 | become part of the .bss section of the executable. There will be | |
7455 | an entry for this symbol in the .dynsym section. The dynamic | |
7456 | object will contain position independent code, so all references | |
7457 | from the dynamic object to this symbol will go through the global | |
7458 | offset table. The dynamic linker will use the .dynsym entry to | |
7459 | determine the address it must put in the global offset table, so | |
7460 | both the dynamic object and the regular object will refer to the | |
7461 | same memory location for the variable. */ | |
7462 | ||
cec5225b | 7463 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7464 | |
7465 | /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker | |
7466 | to copy the initial value out of the dynamic object and into the | |
7467 | runtime process image. */ | |
5474d94f AM |
7468 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
7469 | { | |
7470 | s = htab->root.sdynrelro; | |
7471 | srel = htab->root.sreldynrelro; | |
7472 | } | |
7473 | else | |
7474 | { | |
7475 | s = htab->root.sdynbss; | |
7476 | srel = htab->root.srelbss; | |
7477 | } | |
a06ea964 NC |
7478 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
7479 | { | |
5474d94f | 7480 | srel->size += RELOC_SIZE (htab); |
a06ea964 NC |
7481 | h->needs_copy = 1; |
7482 | } | |
7483 | ||
6cabe1ea | 7484 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
a06ea964 NC |
7485 | |
7486 | } | |
7487 | ||
7488 | static bfd_boolean | |
cec5225b | 7489 | elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number) |
a06ea964 NC |
7490 | { |
7491 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 7492 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
7493 | if (locals == NULL) |
7494 | { | |
7495 | locals = (struct elf_aarch64_local_symbol *) | |
7496 | bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol)); | |
7497 | if (locals == NULL) | |
7498 | return FALSE; | |
cec5225b | 7499 | elf_aarch64_locals (abfd) = locals; |
a06ea964 NC |
7500 | } |
7501 | return TRUE; | |
7502 | } | |
7503 | ||
cc0efaa8 MS |
7504 | /* Create the .got section to hold the global offset table. */ |
7505 | ||
7506 | static bfd_boolean | |
7507 | aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) | |
7508 | { | |
7509 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7510 | flagword flags; | |
7511 | asection *s; | |
7512 | struct elf_link_hash_entry *h; | |
7513 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
7514 | ||
7515 | /* This function may be called more than once. */ | |
ce558b89 | 7516 | if (htab->sgot != NULL) |
cc0efaa8 MS |
7517 | return TRUE; |
7518 | ||
7519 | flags = bed->dynamic_sec_flags; | |
7520 | ||
7521 | s = bfd_make_section_anyway_with_flags (abfd, | |
7522 | (bed->rela_plts_and_copies_p | |
7523 | ? ".rela.got" : ".rel.got"), | |
7524 | (bed->dynamic_sec_flags | |
7525 | | SEC_READONLY)); | |
7526 | if (s == NULL | |
fd361982 | 7527 | || !bfd_set_section_alignment (s, bed->s->log_file_align)) |
cc0efaa8 MS |
7528 | return FALSE; |
7529 | htab->srelgot = s; | |
7530 | ||
7531 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); | |
7532 | if (s == NULL | |
fd361982 | 7533 | || !bfd_set_section_alignment (s, bed->s->log_file_align)) |
cc0efaa8 MS |
7534 | return FALSE; |
7535 | htab->sgot = s; | |
7536 | htab->sgot->size += GOT_ENTRY_SIZE; | |
7537 | ||
7538 | if (bed->want_got_sym) | |
7539 | { | |
7540 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
7541 | (or .got.plt) section. We don't do this in the linker script | |
7542 | because we don't want to define the symbol if we are not creating | |
7543 | a global offset table. */ | |
7544 | h = _bfd_elf_define_linkage_sym (abfd, info, s, | |
7545 | "_GLOBAL_OFFSET_TABLE_"); | |
7546 | elf_hash_table (info)->hgot = h; | |
7547 | if (h == NULL) | |
7548 | return FALSE; | |
7549 | } | |
7550 | ||
7551 | if (bed->want_got_plt) | |
7552 | { | |
7553 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); | |
7554 | if (s == NULL | |
fd361982 | 7555 | || !bfd_set_section_alignment (s, bed->s->log_file_align)) |
cc0efaa8 MS |
7556 | return FALSE; |
7557 | htab->sgotplt = s; | |
7558 | } | |
7559 | ||
7560 | /* The first bit of the global offset table is the header. */ | |
7561 | s->size += bed->got_header_size; | |
7562 | ||
7563 | return TRUE; | |
7564 | } | |
7565 | ||
a06ea964 NC |
7566 | /* Look through the relocs for a section during the first phase. */ |
7567 | ||
7568 | static bfd_boolean | |
cec5225b | 7569 | elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
a06ea964 NC |
7570 | asection *sec, const Elf_Internal_Rela *relocs) |
7571 | { | |
7572 | Elf_Internal_Shdr *symtab_hdr; | |
7573 | struct elf_link_hash_entry **sym_hashes; | |
7574 | const Elf_Internal_Rela *rel; | |
7575 | const Elf_Internal_Rela *rel_end; | |
7576 | asection *sreloc; | |
7577 | ||
cec5225b | 7578 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 7579 | |
0e1862bb | 7580 | if (bfd_link_relocatable (info)) |
a06ea964 NC |
7581 | return TRUE; |
7582 | ||
7583 | BFD_ASSERT (is_aarch64_elf (abfd)); | |
7584 | ||
cec5225b | 7585 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7586 | sreloc = NULL; |
7587 | ||
7588 | symtab_hdr = &elf_symtab_hdr (abfd); | |
7589 | sym_hashes = elf_sym_hashes (abfd); | |
a06ea964 NC |
7590 | |
7591 | rel_end = relocs + sec->reloc_count; | |
7592 | for (rel = relocs; rel < rel_end; rel++) | |
7593 | { | |
7594 | struct elf_link_hash_entry *h; | |
d42c267e | 7595 | unsigned int r_symndx; |
a06ea964 | 7596 | unsigned int r_type; |
a6bb11b2 | 7597 | bfd_reloc_code_real_type bfd_r_type; |
1419bbe5 | 7598 | Elf_Internal_Sym *isym; |
a06ea964 | 7599 | |
cec5225b YZ |
7600 | r_symndx = ELFNN_R_SYM (rel->r_info); |
7601 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 NC |
7602 | |
7603 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
7604 | { | |
695344c0 | 7605 | /* xgettext:c-format */ |
871b3ab2 | 7606 | _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd, r_symndx); |
a06ea964 NC |
7607 | return FALSE; |
7608 | } | |
7609 | ||
ed5acf27 | 7610 | if (r_symndx < symtab_hdr->sh_info) |
1419bbe5 WN |
7611 | { |
7612 | /* A local symbol. */ | |
7613 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
7614 | abfd, r_symndx); | |
7615 | if (isym == NULL) | |
7616 | return FALSE; | |
7617 | ||
7618 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
7619 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
7620 | { | |
7621 | h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, | |
7622 | TRUE); | |
7623 | if (h == NULL) | |
7624 | return FALSE; | |
7625 | ||
7626 | /* Fake a STT_GNU_IFUNC symbol. */ | |
7627 | h->type = STT_GNU_IFUNC; | |
7628 | h->def_regular = 1; | |
7629 | h->ref_regular = 1; | |
7630 | h->forced_local = 1; | |
7631 | h->root.type = bfd_link_hash_defined; | |
7632 | } | |
7633 | else | |
7634 | h = NULL; | |
7635 | } | |
a06ea964 NC |
7636 | else |
7637 | { | |
7638 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
7639 | while (h->root.type == bfd_link_hash_indirect | |
7640 | || h->root.type == bfd_link_hash_warning) | |
7641 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7642 | } | |
7643 | ||
7644 | /* Could be done earlier, if h were already available. */ | |
a6bb11b2 | 7645 | bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx); |
a06ea964 | 7646 | |
1419bbe5 WN |
7647 | if (h != NULL) |
7648 | { | |
18f822a0 JW |
7649 | /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. |
7650 | This shows up in particular in an R_AARCH64_PREL64 in large model | |
7651 | when calculating the pc-relative address to .got section which is | |
7652 | used to initialize the gp register. */ | |
7653 | if (h->root.root.string | |
7654 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
7655 | { | |
7656 | if (htab->root.dynobj == NULL) | |
7657 | htab->root.dynobj = abfd; | |
7658 | ||
7659 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
7660 | return FALSE; | |
7661 | ||
7662 | BFD_ASSERT (h == htab->root.hgot); | |
7663 | } | |
7664 | ||
1419bbe5 WN |
7665 | /* Create the ifunc sections for static executables. If we |
7666 | never see an indirect function symbol nor we are building | |
7667 | a static executable, those sections will be empty and | |
7668 | won't appear in output. */ | |
7669 | switch (bfd_r_type) | |
7670 | { | |
7671 | default: | |
7672 | break; | |
7673 | ||
ce336788 JW |
7674 | case BFD_RELOC_AARCH64_ADD_LO12: |
7675 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: | |
7676 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
1419bbe5 | 7677 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 7678 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
1419bbe5 | 7679 | case BFD_RELOC_AARCH64_JUMP26: |
7018c030 | 7680 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
1419bbe5 | 7681 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 7682 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 7683 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
1419bbe5 | 7684 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 7685 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 7686 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
ce336788 | 7687 | case BFD_RELOC_AARCH64_NN: |
1419bbe5 WN |
7688 | if (htab->root.dynobj == NULL) |
7689 | htab->root.dynobj = abfd; | |
7690 | if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info)) | |
7691 | return FALSE; | |
7692 | break; | |
7693 | } | |
7694 | ||
2d0ca824 | 7695 | /* It is referenced by a non-shared object. */ |
1419bbe5 | 7696 | h->ref_regular = 1; |
1419bbe5 WN |
7697 | } |
7698 | ||
a6bb11b2 | 7699 | switch (bfd_r_type) |
a06ea964 | 7700 | { |
79e74192 RL |
7701 | case BFD_RELOC_AARCH64_16: |
7702 | #if ARCH_SIZE == 64 | |
7703 | case BFD_RELOC_AARCH64_32: | |
7704 | #endif | |
279b2f94 | 7705 | if (bfd_link_pic (info) && (sec->flags & SEC_ALLOC) != 0) |
79e74192 | 7706 | { |
279b2f94 RL |
7707 | if (h != NULL |
7708 | /* This is an absolute symbol. It represents a value instead | |
7709 | of an address. */ | |
c691de6a | 7710 | && (bfd_is_abs_symbol (&h->root) |
279b2f94 RL |
7711 | /* This is an undefined symbol. */ |
7712 | || h->root.type == bfd_link_hash_undefined)) | |
7713 | break; | |
7714 | ||
7715 | /* For local symbols, defined global symbols in a non-ABS section, | |
7716 | it is assumed that the value is an address. */ | |
79e74192 RL |
7717 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; |
7718 | _bfd_error_handler | |
7719 | /* xgettext:c-format */ | |
871b3ab2 | 7720 | (_("%pB: relocation %s against `%s' can not be used when making " |
79e74192 RL |
7721 | "a shared object"), |
7722 | abfd, elfNN_aarch64_howto_table[howto_index].name, | |
7723 | (h) ? h->root.root.string : "a local symbol"); | |
7724 | bfd_set_error (bfd_error_bad_value); | |
7725 | return FALSE; | |
7726 | } | |
7727 | else | |
7728 | break; | |
7729 | ||
6353d82b JW |
7730 | case BFD_RELOC_AARCH64_MOVW_G0_NC: |
7731 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
7732 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
7733 | case BFD_RELOC_AARCH64_MOVW_G3: | |
7734 | if (bfd_link_pic (info)) | |
7735 | { | |
7736 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
7737 | _bfd_error_handler | |
7738 | /* xgettext:c-format */ | |
871b3ab2 | 7739 | (_("%pB: relocation %s against `%s' can not be used when making " |
6353d82b JW |
7740 | "a shared object; recompile with -fPIC"), |
7741 | abfd, elfNN_aarch64_howto_table[howto_index].name, | |
7742 | (h) ? h->root.root.string : "a local symbol"); | |
7743 | bfd_set_error (bfd_error_bad_value); | |
7744 | return FALSE; | |
7745 | } | |
7746 | /* Fall through. */ | |
7747 | ||
7748 | case BFD_RELOC_AARCH64_16_PCREL: | |
7749 | case BFD_RELOC_AARCH64_32_PCREL: | |
7750 | case BFD_RELOC_AARCH64_64_PCREL: | |
7751 | case BFD_RELOC_AARCH64_ADD_LO12: | |
7752 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: | |
7753 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
7754 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
7755 | case BFD_RELOC_AARCH64_LDST128_LO12: | |
7756 | case BFD_RELOC_AARCH64_LDST16_LO12: | |
7757 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
7758 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
7759 | case BFD_RELOC_AARCH64_LDST8_LO12: | |
7760 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
7761 | if (h == NULL || bfd_link_pic (info)) | |
7762 | break; | |
7763 | /* Fall through. */ | |
7764 | ||
a6bb11b2 | 7765 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
7766 | |
7767 | /* We don't need to handle relocs into sections not going into | |
7768 | the "real" output. */ | |
7769 | if ((sec->flags & SEC_ALLOC) == 0) | |
7770 | break; | |
7771 | ||
7772 | if (h != NULL) | |
7773 | { | |
0e1862bb | 7774 | if (!bfd_link_pic (info)) |
a06ea964 NC |
7775 | h->non_got_ref = 1; |
7776 | ||
7777 | h->plt.refcount += 1; | |
7778 | h->pointer_equality_needed = 1; | |
7779 | } | |
7780 | ||
7781 | /* No need to do anything if we're not creating a shared | |
7782 | object. */ | |
6353d82b JW |
7783 | if (!(bfd_link_pic (info) |
7784 | /* If on the other hand, we are creating an executable, we | |
7785 | may need to keep relocations for symbols satisfied by a | |
7786 | dynamic library if we manage to avoid copy relocs for the | |
7787 | symbol. | |
7788 | ||
7789 | NOTE: Currently, there is no support of copy relocs | |
7790 | elimination on pc-relative relocation types, because there is | |
7791 | no dynamic relocation support for them in glibc. We still | |
7792 | record the dynamic symbol reference for them. This is | |
7793 | because one symbol may be referenced by both absolute | |
7794 | relocation (for example, BFD_RELOC_AARCH64_NN) and | |
7795 | pc-relative relocation. We need full symbol reference | |
7796 | information to make correct decision later in | |
7797 | elfNN_aarch64_adjust_dynamic_symbol. */ | |
7798 | || (ELIMINATE_COPY_RELOCS | |
7799 | && !bfd_link_pic (info) | |
7800 | && h != NULL | |
7801 | && (h->root.type == bfd_link_hash_defweak | |
7802 | || !h->def_regular)))) | |
a06ea964 NC |
7803 | break; |
7804 | ||
7805 | { | |
7806 | struct elf_dyn_relocs *p; | |
7807 | struct elf_dyn_relocs **head; | |
6353d82b | 7808 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; |
a06ea964 NC |
7809 | |
7810 | /* We must copy these reloc types into the output file. | |
7811 | Create a reloc section in dynobj and make room for | |
7812 | this reloc. */ | |
7813 | if (sreloc == NULL) | |
7814 | { | |
7815 | if (htab->root.dynobj == NULL) | |
7816 | htab->root.dynobj = abfd; | |
7817 | ||
7818 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
0608afa7 | 7819 | (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE); |
a06ea964 NC |
7820 | |
7821 | if (sreloc == NULL) | |
7822 | return FALSE; | |
7823 | } | |
7824 | ||
7825 | /* If this is a global symbol, we count the number of | |
7826 | relocations we need for this symbol. */ | |
7827 | if (h != NULL) | |
7828 | { | |
cec5225b YZ |
7829 | struct elf_aarch64_link_hash_entry *eh; |
7830 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
7831 | head = &eh->dyn_relocs; |
7832 | } | |
7833 | else | |
7834 | { | |
7835 | /* Track dynamic relocs needed for local syms too. | |
7836 | We really need local syms available to do this | |
7837 | easily. Oh well. */ | |
7838 | ||
7839 | asection *s; | |
7840 | void **vpp; | |
a06ea964 NC |
7841 | |
7842 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
7843 | abfd, r_symndx); | |
7844 | if (isym == NULL) | |
7845 | return FALSE; | |
7846 | ||
7847 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
7848 | if (s == NULL) | |
7849 | s = sec; | |
7850 | ||
7851 | /* Beware of type punned pointers vs strict aliasing | |
7852 | rules. */ | |
7853 | vpp = &(elf_section_data (s)->local_dynrel); | |
7854 | head = (struct elf_dyn_relocs **) vpp; | |
7855 | } | |
7856 | ||
7857 | p = *head; | |
7858 | if (p == NULL || p->sec != sec) | |
7859 | { | |
7860 | bfd_size_type amt = sizeof *p; | |
7861 | p = ((struct elf_dyn_relocs *) | |
7862 | bfd_zalloc (htab->root.dynobj, amt)); | |
7863 | if (p == NULL) | |
7864 | return FALSE; | |
7865 | p->next = *head; | |
7866 | *head = p; | |
7867 | p->sec = sec; | |
7868 | } | |
7869 | ||
7870 | p->count += 1; | |
7871 | ||
6353d82b JW |
7872 | if (elfNN_aarch64_howto_table[howto_index].pc_relative) |
7873 | p->pc_count += 1; | |
a06ea964 NC |
7874 | } |
7875 | break; | |
7876 | ||
7877 | /* RR: We probably want to keep a consistency check that | |
7878 | there are no dangling GOT_PAGE relocs. */ | |
a6bb11b2 | 7879 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
7bcccb57 | 7880 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
7018c030 | 7881 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
7bcccb57 | 7882 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 7883 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 7884 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
7bcccb57 | 7885 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 7886 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 7887 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
f955cccf | 7888 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
7bcccb57 | 7889 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 7890 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
7bcccb57 | 7891 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
f955cccf | 7892 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
1ada945d | 7893 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
7894 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
7895 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a6bb11b2 | 7896 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
7bcccb57 | 7897 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 7898 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 7899 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 7900 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
a6bb11b2 | 7901 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 7902 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
7bcccb57 | 7903 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 7904 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
7905 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
7906 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
73f925cc | 7907 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 7908 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 7909 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
7910 | { |
7911 | unsigned got_type; | |
7912 | unsigned old_got_type; | |
7913 | ||
a6bb11b2 | 7914 | got_type = aarch64_reloc_got_type (bfd_r_type); |
a06ea964 NC |
7915 | |
7916 | if (h) | |
7917 | { | |
7918 | h->got.refcount += 1; | |
cec5225b | 7919 | old_got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
7920 | } |
7921 | else | |
7922 | { | |
7923 | struct elf_aarch64_local_symbol *locals; | |
7924 | ||
cec5225b | 7925 | if (!elfNN_aarch64_allocate_local_symbols |
a06ea964 NC |
7926 | (abfd, symtab_hdr->sh_info)) |
7927 | return FALSE; | |
7928 | ||
cec5225b | 7929 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
7930 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
7931 | locals[r_symndx].got_refcount += 1; | |
7932 | old_got_type = locals[r_symndx].got_type; | |
7933 | } | |
7934 | ||
7935 | /* If a variable is accessed with both general dynamic TLS | |
7936 | methods, two slots may be created. */ | |
7937 | if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type)) | |
7938 | got_type |= old_got_type; | |
7939 | ||
7940 | /* We will already have issued an error message if there | |
7941 | is a TLS/non-TLS mismatch, based on the symbol type. | |
7942 | So just combine any TLS types needed. */ | |
7943 | if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL | |
7944 | && got_type != GOT_NORMAL) | |
7945 | got_type |= old_got_type; | |
7946 | ||
7947 | /* If the symbol is accessed by both IE and GD methods, we | |
7948 | are able to relax. Turn off the GD flag, without | |
7949 | messing up with any other kind of TLS types that may be | |
7950 | involved. */ | |
7951 | if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type)) | |
7952 | got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD); | |
7953 | ||
7954 | if (old_got_type != got_type) | |
7955 | { | |
7956 | if (h != NULL) | |
cec5225b | 7957 | elf_aarch64_hash_entry (h)->got_type = got_type; |
a06ea964 NC |
7958 | else |
7959 | { | |
7960 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 7961 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
7962 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
7963 | locals[r_symndx].got_type = got_type; | |
7964 | } | |
7965 | } | |
7966 | ||
cc0efaa8 MS |
7967 | if (htab->root.dynobj == NULL) |
7968 | htab->root.dynobj = abfd; | |
7969 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
7970 | return FALSE; | |
a06ea964 NC |
7971 | break; |
7972 | } | |
7973 | ||
a6bb11b2 YZ |
7974 | case BFD_RELOC_AARCH64_CALL26: |
7975 | case BFD_RELOC_AARCH64_JUMP26: | |
a06ea964 NC |
7976 | /* If this is a local symbol then we resolve it |
7977 | directly without creating a PLT entry. */ | |
7978 | if (h == NULL) | |
7979 | continue; | |
7980 | ||
7981 | h->needs_plt = 1; | |
1419bbe5 WN |
7982 | if (h->plt.refcount <= 0) |
7983 | h->plt.refcount = 1; | |
7984 | else | |
7985 | h->plt.refcount += 1; | |
a06ea964 | 7986 | break; |
a6bb11b2 YZ |
7987 | |
7988 | default: | |
7989 | break; | |
a06ea964 NC |
7990 | } |
7991 | } | |
a6bb11b2 | 7992 | |
a06ea964 NC |
7993 | return TRUE; |
7994 | } | |
7995 | ||
7996 | /* Treat mapping symbols as special target symbols. */ | |
7997 | ||
7998 | static bfd_boolean | |
cec5225b | 7999 | elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
8000 | asymbol *sym) |
8001 | { | |
8002 | return bfd_is_aarch64_special_symbol_name (sym->name, | |
8003 | BFD_AARCH64_SPECIAL_SYM_TYPE_ANY); | |
8004 | } | |
8005 | ||
e7679060 AM |
8006 | /* If the ELF symbol SYM might be a function in SEC, return the |
8007 | function size and set *CODE_OFF to the function's entry point, | |
8008 | otherwise return zero. */ | |
a06ea964 | 8009 | |
e7679060 AM |
8010 | static bfd_size_type |
8011 | elfNN_aarch64_maybe_function_sym (const asymbol *sym, asection *sec, | |
8012 | bfd_vma *code_off) | |
8013 | { | |
8014 | bfd_size_type size; | |
a06ea964 | 8015 | |
e7679060 AM |
8016 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT |
8017 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0 | |
8018 | || sym->section != sec) | |
8019 | return 0; | |
a06ea964 | 8020 | |
e7679060 AM |
8021 | if (!(sym->flags & BSF_SYNTHETIC)) |
8022 | switch (ELF_ST_TYPE (((elf_symbol_type *) sym)->internal_elf_sym.st_info)) | |
8023 | { | |
a06ea964 NC |
8024 | case STT_FUNC: |
8025 | case STT_NOTYPE: | |
a06ea964 | 8026 | break; |
e7679060 AM |
8027 | default: |
8028 | return 0; | |
8029 | } | |
a06ea964 | 8030 | |
e7679060 AM |
8031 | if ((sym->flags & BSF_LOCAL) |
8032 | && bfd_is_aarch64_special_symbol_name (sym->name, | |
8033 | BFD_AARCH64_SPECIAL_SYM_TYPE_ANY)) | |
8034 | return 0; | |
a06ea964 | 8035 | |
e7679060 AM |
8036 | *code_off = sym->value; |
8037 | size = 0; | |
8038 | if (!(sym->flags & BSF_SYNTHETIC)) | |
8039 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
8040 | if (size == 0) | |
8041 | size = 1; | |
8042 | return size; | |
a06ea964 NC |
8043 | } |
8044 | ||
8045 | static bfd_boolean | |
cec5225b | 8046 | elfNN_aarch64_find_inliner_info (bfd *abfd, |
a06ea964 NC |
8047 | const char **filename_ptr, |
8048 | const char **functionname_ptr, | |
8049 | unsigned int *line_ptr) | |
8050 | { | |
8051 | bfd_boolean found; | |
8052 | found = _bfd_dwarf2_find_inliner_info | |
8053 | (abfd, filename_ptr, | |
8054 | functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info); | |
8055 | return found; | |
8056 | } | |
8057 | ||
8058 | ||
ed7e9d0b AM |
8059 | static bfd_boolean |
8060 | elfNN_aarch64_init_file_header (bfd *abfd, struct bfd_link_info *link_info) | |
a06ea964 NC |
8061 | { |
8062 | Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */ | |
8063 | ||
ed7e9d0b AM |
8064 | if (!_bfd_elf_init_file_header (abfd, link_info)) |
8065 | return FALSE; | |
8066 | ||
a06ea964 | 8067 | i_ehdrp = elf_elfheader (abfd); |
a06ea964 | 8068 | i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION; |
ed7e9d0b | 8069 | return TRUE; |
a06ea964 NC |
8070 | } |
8071 | ||
8072 | static enum elf_reloc_type_class | |
cec5225b | 8073 | elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
7e612e98 AM |
8074 | const asection *rel_sec ATTRIBUTE_UNUSED, |
8075 | const Elf_Internal_Rela *rela) | |
a06ea964 | 8076 | { |
f2e6a843 SN |
8077 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); |
8078 | ||
8079 | if (htab->root.dynsym != NULL | |
8080 | && htab->root.dynsym->contents != NULL) | |
8081 | { | |
8082 | /* Check relocation against STT_GNU_IFUNC symbol if there are | |
8083 | dynamic symbols. */ | |
8084 | bfd *abfd = info->output_bfd; | |
8085 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8086 | unsigned long r_symndx = ELFNN_R_SYM (rela->r_info); | |
8087 | if (r_symndx != STN_UNDEF) | |
8088 | { | |
8089 | Elf_Internal_Sym sym; | |
8090 | if (!bed->s->swap_symbol_in (abfd, | |
8091 | (htab->root.dynsym->contents | |
8092 | + r_symndx * bed->s->sizeof_sym), | |
8093 | 0, &sym)) | |
8094 | { | |
8095 | /* xgettext:c-format */ | |
871b3ab2 | 8096 | _bfd_error_handler (_("%pB symbol number %lu references" |
f2e6a843 SN |
8097 | " nonexistent SHT_SYMTAB_SHNDX section"), |
8098 | abfd, r_symndx); | |
8099 | /* Ideally an error class should be returned here. */ | |
8100 | } | |
8101 | else if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC) | |
8102 | return reloc_class_ifunc; | |
8103 | } | |
8104 | } | |
8105 | ||
cec5225b | 8106 | switch ((int) ELFNN_R_TYPE (rela->r_info)) |
a06ea964 | 8107 | { |
f2e6a843 SN |
8108 | case AARCH64_R (IRELATIVE): |
8109 | return reloc_class_ifunc; | |
a6bb11b2 | 8110 | case AARCH64_R (RELATIVE): |
a06ea964 | 8111 | return reloc_class_relative; |
a6bb11b2 | 8112 | case AARCH64_R (JUMP_SLOT): |
a06ea964 | 8113 | return reloc_class_plt; |
a6bb11b2 | 8114 | case AARCH64_R (COPY): |
a06ea964 NC |
8115 | return reloc_class_copy; |
8116 | default: | |
8117 | return reloc_class_normal; | |
8118 | } | |
8119 | } | |
8120 | ||
a06ea964 NC |
8121 | /* Handle an AArch64 specific section when reading an object file. This is |
8122 | called when bfd_section_from_shdr finds a section with an unknown | |
8123 | type. */ | |
8124 | ||
8125 | static bfd_boolean | |
cec5225b | 8126 | elfNN_aarch64_section_from_shdr (bfd *abfd, |
a06ea964 NC |
8127 | Elf_Internal_Shdr *hdr, |
8128 | const char *name, int shindex) | |
8129 | { | |
8130 | /* There ought to be a place to keep ELF backend specific flags, but | |
8131 | at the moment there isn't one. We just keep track of the | |
8132 | sections by their name, instead. Fortunately, the ABI gives | |
8133 | names for all the AArch64 specific sections, so we will probably get | |
8134 | away with this. */ | |
8135 | switch (hdr->sh_type) | |
8136 | { | |
8137 | case SHT_AARCH64_ATTRIBUTES: | |
8138 | break; | |
8139 | ||
8140 | default: | |
8141 | return FALSE; | |
8142 | } | |
8143 | ||
8144 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
8145 | return FALSE; | |
8146 | ||
8147 | return TRUE; | |
8148 | } | |
8149 | ||
8150 | /* A structure used to record a list of sections, independently | |
8151 | of the next and prev fields in the asection structure. */ | |
8152 | typedef struct section_list | |
8153 | { | |
8154 | asection *sec; | |
8155 | struct section_list *next; | |
8156 | struct section_list *prev; | |
8157 | } | |
8158 | section_list; | |
8159 | ||
8160 | /* Unfortunately we need to keep a list of sections for which | |
8161 | an _aarch64_elf_section_data structure has been allocated. This | |
cec5225b | 8162 | is because it is possible for functions like elfNN_aarch64_write_section |
a06ea964 NC |
8163 | to be called on a section which has had an elf_data_structure |
8164 | allocated for it (and so the used_by_bfd field is valid) but | |
8165 | for which the AArch64 extended version of this structure - the | |
8166 | _aarch64_elf_section_data structure - has not been allocated. */ | |
8167 | static section_list *sections_with_aarch64_elf_section_data = NULL; | |
8168 | ||
8169 | static void | |
8170 | record_section_with_aarch64_elf_section_data (asection *sec) | |
8171 | { | |
8172 | struct section_list *entry; | |
8173 | ||
8174 | entry = bfd_malloc (sizeof (*entry)); | |
8175 | if (entry == NULL) | |
8176 | return; | |
8177 | entry->sec = sec; | |
8178 | entry->next = sections_with_aarch64_elf_section_data; | |
8179 | entry->prev = NULL; | |
8180 | if (entry->next != NULL) | |
8181 | entry->next->prev = entry; | |
8182 | sections_with_aarch64_elf_section_data = entry; | |
8183 | } | |
8184 | ||
8185 | static struct section_list * | |
8186 | find_aarch64_elf_section_entry (asection *sec) | |
8187 | { | |
8188 | struct section_list *entry; | |
8189 | static struct section_list *last_entry = NULL; | |
8190 | ||
8191 | /* This is a short cut for the typical case where the sections are added | |
8192 | to the sections_with_aarch64_elf_section_data list in forward order and | |
8193 | then looked up here in backwards order. This makes a real difference | |
8194 | to the ld-srec/sec64k.exp linker test. */ | |
8195 | entry = sections_with_aarch64_elf_section_data; | |
8196 | if (last_entry != NULL) | |
8197 | { | |
8198 | if (last_entry->sec == sec) | |
8199 | entry = last_entry; | |
8200 | else if (last_entry->next != NULL && last_entry->next->sec == sec) | |
8201 | entry = last_entry->next; | |
8202 | } | |
8203 | ||
8204 | for (; entry; entry = entry->next) | |
8205 | if (entry->sec == sec) | |
8206 | break; | |
8207 | ||
8208 | if (entry) | |
8209 | /* Record the entry prior to this one - it is the entry we are | |
8210 | most likely to want to locate next time. Also this way if we | |
8211 | have been called from | |
8212 | unrecord_section_with_aarch64_elf_section_data () we will not | |
8213 | be caching a pointer that is about to be freed. */ | |
8214 | last_entry = entry->prev; | |
8215 | ||
8216 | return entry; | |
8217 | } | |
8218 | ||
8219 | static void | |
8220 | unrecord_section_with_aarch64_elf_section_data (asection *sec) | |
8221 | { | |
8222 | struct section_list *entry; | |
8223 | ||
8224 | entry = find_aarch64_elf_section_entry (sec); | |
8225 | ||
8226 | if (entry) | |
8227 | { | |
8228 | if (entry->prev != NULL) | |
8229 | entry->prev->next = entry->next; | |
8230 | if (entry->next != NULL) | |
8231 | entry->next->prev = entry->prev; | |
8232 | if (entry == sections_with_aarch64_elf_section_data) | |
8233 | sections_with_aarch64_elf_section_data = entry->next; | |
8234 | free (entry); | |
8235 | } | |
8236 | } | |
8237 | ||
8238 | ||
8239 | typedef struct | |
8240 | { | |
8241 | void *finfo; | |
8242 | struct bfd_link_info *info; | |
8243 | asection *sec; | |
8244 | int sec_shndx; | |
8245 | int (*func) (void *, const char *, Elf_Internal_Sym *, | |
8246 | asection *, struct elf_link_hash_entry *); | |
8247 | } output_arch_syminfo; | |
8248 | ||
8249 | enum map_symbol_type | |
8250 | { | |
8251 | AARCH64_MAP_INSN, | |
8252 | AARCH64_MAP_DATA | |
8253 | }; | |
8254 | ||
8255 | ||
8256 | /* Output a single mapping symbol. */ | |
8257 | ||
8258 | static bfd_boolean | |
cec5225b | 8259 | elfNN_aarch64_output_map_sym (output_arch_syminfo *osi, |
a06ea964 NC |
8260 | enum map_symbol_type type, bfd_vma offset) |
8261 | { | |
8262 | static const char *names[2] = { "$x", "$d" }; | |
8263 | Elf_Internal_Sym sym; | |
8264 | ||
8265 | sym.st_value = (osi->sec->output_section->vma | |
8266 | + osi->sec->output_offset + offset); | |
8267 | sym.st_size = 0; | |
8268 | sym.st_other = 0; | |
8269 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
8270 | sym.st_shndx = osi->sec_shndx; | |
8271 | return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1; | |
8272 | } | |
8273 | ||
a06ea964 NC |
8274 | /* Output a single local symbol for a generated stub. */ |
8275 | ||
8276 | static bfd_boolean | |
cec5225b | 8277 | elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name, |
a06ea964 NC |
8278 | bfd_vma offset, bfd_vma size) |
8279 | { | |
8280 | Elf_Internal_Sym sym; | |
8281 | ||
8282 | sym.st_value = (osi->sec->output_section->vma | |
8283 | + osi->sec->output_offset + offset); | |
8284 | sym.st_size = size; | |
8285 | sym.st_other = 0; | |
8286 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
8287 | sym.st_shndx = osi->sec_shndx; | |
8288 | return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1; | |
8289 | } | |
8290 | ||
8291 | static bfd_boolean | |
8292 | aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) | |
8293 | { | |
cec5225b | 8294 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
8295 | asection *stub_sec; |
8296 | bfd_vma addr; | |
8297 | char *stub_name; | |
8298 | output_arch_syminfo *osi; | |
8299 | ||
8300 | /* Massage our args to the form they really have. */ | |
cec5225b | 8301 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
8302 | osi = (output_arch_syminfo *) in_arg; |
8303 | ||
8304 | stub_sec = stub_entry->stub_sec; | |
8305 | ||
8306 | /* Ensure this stub is attached to the current section being | |
8307 | processed. */ | |
8308 | if (stub_sec != osi->sec) | |
8309 | return TRUE; | |
8310 | ||
8311 | addr = (bfd_vma) stub_entry->stub_offset; | |
8312 | ||
8313 | stub_name = stub_entry->output_name; | |
8314 | ||
8315 | switch (stub_entry->stub_type) | |
8316 | { | |
8317 | case aarch64_stub_adrp_branch: | |
cec5225b | 8318 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, |
a06ea964 NC |
8319 | sizeof (aarch64_adrp_branch_stub))) |
8320 | return FALSE; | |
cec5225b | 8321 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 NC |
8322 | return FALSE; |
8323 | break; | |
8324 | case aarch64_stub_long_branch: | |
cec5225b | 8325 | if (!elfNN_aarch64_output_stub_sym |
a06ea964 NC |
8326 | (osi, stub_name, addr, sizeof (aarch64_long_branch_stub))) |
8327 | return FALSE; | |
cec5225b | 8328 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 | 8329 | return FALSE; |
cec5225b | 8330 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16)) |
a06ea964 NC |
8331 | return FALSE; |
8332 | break; | |
68fcca92 JW |
8333 | case aarch64_stub_erratum_835769_veneer: |
8334 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
8335 | sizeof (aarch64_erratum_835769_stub))) | |
8336 | return FALSE; | |
8337 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
8338 | return FALSE; | |
8339 | break; | |
4106101c MS |
8340 | case aarch64_stub_erratum_843419_veneer: |
8341 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
8342 | sizeof (aarch64_erratum_843419_stub))) | |
8343 | return FALSE; | |
8344 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
8345 | return FALSE; | |
8346 | break; | |
9fca35fc TC |
8347 | case aarch64_stub_none: |
8348 | break; | |
4106101c | 8349 | |
a06ea964 | 8350 | default: |
8e2fe09f | 8351 | abort (); |
a06ea964 NC |
8352 | } |
8353 | ||
8354 | return TRUE; | |
8355 | } | |
8356 | ||
8357 | /* Output mapping symbols for linker generated sections. */ | |
8358 | ||
8359 | static bfd_boolean | |
cec5225b | 8360 | elfNN_aarch64_output_arch_local_syms (bfd *output_bfd, |
a06ea964 NC |
8361 | struct bfd_link_info *info, |
8362 | void *finfo, | |
8363 | int (*func) (void *, const char *, | |
8364 | Elf_Internal_Sym *, | |
8365 | asection *, | |
8366 | struct elf_link_hash_entry | |
8367 | *)) | |
8368 | { | |
8369 | output_arch_syminfo osi; | |
cec5225b | 8370 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 8371 | |
cec5225b | 8372 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
8373 | |
8374 | osi.finfo = finfo; | |
8375 | osi.info = info; | |
8376 | osi.func = func; | |
8377 | ||
8378 | /* Long calls stubs. */ | |
8379 | if (htab->stub_bfd && htab->stub_bfd->sections) | |
8380 | { | |
8381 | asection *stub_sec; | |
8382 | ||
8383 | for (stub_sec = htab->stub_bfd->sections; | |
8384 | stub_sec != NULL; stub_sec = stub_sec->next) | |
8385 | { | |
8386 | /* Ignore non-stub sections. */ | |
8387 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
8388 | continue; | |
8389 | ||
8390 | osi.sec = stub_sec; | |
8391 | ||
8392 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
8393 | (output_bfd, osi.sec->output_section); | |
8394 | ||
61865519 MS |
8395 | /* The first instruction in a stub is always a branch. */ |
8396 | if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0)) | |
8397 | return FALSE; | |
8398 | ||
a06ea964 NC |
8399 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub, |
8400 | &osi); | |
8401 | } | |
8402 | } | |
8403 | ||
8404 | /* Finally, output mapping symbols for the PLT. */ | |
8405 | if (!htab->root.splt || htab->root.splt->size == 0) | |
8406 | return TRUE; | |
8407 | ||
a06ea964 NC |
8408 | osi.sec_shndx = _bfd_elf_section_from_bfd_section |
8409 | (output_bfd, htab->root.splt->output_section); | |
8410 | osi.sec = htab->root.splt; | |
8411 | ||
73524045 | 8412 | elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0); |
a06ea964 NC |
8413 | |
8414 | return TRUE; | |
8415 | ||
8416 | } | |
8417 | ||
8418 | /* Allocate target specific section data. */ | |
8419 | ||
8420 | static bfd_boolean | |
cec5225b | 8421 | elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec) |
a06ea964 NC |
8422 | { |
8423 | if (!sec->used_by_bfd) | |
8424 | { | |
8425 | _aarch64_elf_section_data *sdata; | |
8426 | bfd_size_type amt = sizeof (*sdata); | |
8427 | ||
8428 | sdata = bfd_zalloc (abfd, amt); | |
8429 | if (sdata == NULL) | |
8430 | return FALSE; | |
8431 | sec->used_by_bfd = sdata; | |
8432 | } | |
8433 | ||
8434 | record_section_with_aarch64_elf_section_data (sec); | |
8435 | ||
8436 | return _bfd_elf_new_section_hook (abfd, sec); | |
8437 | } | |
8438 | ||
8439 | ||
8440 | static void | |
8441 | unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
8442 | asection *sec, | |
8443 | void *ignore ATTRIBUTE_UNUSED) | |
8444 | { | |
8445 | unrecord_section_with_aarch64_elf_section_data (sec); | |
8446 | } | |
8447 | ||
8448 | static bfd_boolean | |
cec5225b | 8449 | elfNN_aarch64_close_and_cleanup (bfd *abfd) |
a06ea964 NC |
8450 | { |
8451 | if (abfd->sections) | |
8452 | bfd_map_over_sections (abfd, | |
8453 | unrecord_section_via_map_over_sections, NULL); | |
8454 | ||
8455 | return _bfd_elf_close_and_cleanup (abfd); | |
8456 | } | |
8457 | ||
8458 | static bfd_boolean | |
cec5225b | 8459 | elfNN_aarch64_bfd_free_cached_info (bfd *abfd) |
a06ea964 NC |
8460 | { |
8461 | if (abfd->sections) | |
8462 | bfd_map_over_sections (abfd, | |
8463 | unrecord_section_via_map_over_sections, NULL); | |
8464 | ||
8465 | return _bfd_free_cached_info (abfd); | |
8466 | } | |
8467 | ||
a06ea964 NC |
8468 | /* Create dynamic sections. This is different from the ARM backend in that |
8469 | the got, plt, gotplt and their relocation sections are all created in the | |
8470 | standard part of the bfd elf backend. */ | |
8471 | ||
8472 | static bfd_boolean | |
cec5225b | 8473 | elfNN_aarch64_create_dynamic_sections (bfd *dynobj, |
a06ea964 NC |
8474 | struct bfd_link_info *info) |
8475 | { | |
cc0efaa8 MS |
8476 | /* We need to create .got section. */ |
8477 | if (!aarch64_elf_create_got_section (dynobj, info)) | |
8478 | return FALSE; | |
a06ea964 | 8479 | |
9d19e4fd | 8480 | return _bfd_elf_create_dynamic_sections (dynobj, info); |
a06ea964 NC |
8481 | } |
8482 | ||
8483 | ||
8484 | /* Allocate space in .plt, .got and associated reloc sections for | |
8485 | dynamic relocs. */ | |
8486 | ||
8487 | static bfd_boolean | |
cec5225b | 8488 | elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
a06ea964 NC |
8489 | { |
8490 | struct bfd_link_info *info; | |
cec5225b YZ |
8491 | struct elf_aarch64_link_hash_table *htab; |
8492 | struct elf_aarch64_link_hash_entry *eh; | |
a06ea964 NC |
8493 | struct elf_dyn_relocs *p; |
8494 | ||
8495 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
8496 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
8497 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
8498 | ||
8499 | There is no need to process bfd_link_hash_indirect symbols here | |
8500 | because we will also be presented with the concrete instance of | |
cec5225b | 8501 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been |
a06ea964 | 8502 | called to copy all relevant data from the generic to the concrete |
2d0ca824 | 8503 | symbol instance. */ |
a06ea964 NC |
8504 | if (h->root.type == bfd_link_hash_indirect) |
8505 | return TRUE; | |
8506 | ||
8507 | if (h->root.type == bfd_link_hash_warning) | |
8508 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8509 | ||
8510 | info = (struct bfd_link_info *) inf; | |
cec5225b | 8511 | htab = elf_aarch64_hash_table (info); |
a06ea964 | 8512 | |
1419bbe5 WN |
8513 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
8514 | here if it is defined and referenced in a non-shared object. */ | |
8515 | if (h->type == STT_GNU_IFUNC | |
8516 | && h->def_regular) | |
8517 | return TRUE; | |
8518 | else if (htab->root.dynamic_sections_created && h->plt.refcount > 0) | |
a06ea964 NC |
8519 | { |
8520 | /* Make sure this symbol is output as a dynamic symbol. | |
07d6d2b8 | 8521 | Undefined weak syms won't yet be marked as dynamic. */ |
ff07562f JW |
8522 | if (h->dynindx == -1 && !h->forced_local |
8523 | && h->root.type == bfd_link_hash_undefweak) | |
a06ea964 NC |
8524 | { |
8525 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
8526 | return FALSE; | |
8527 | } | |
8528 | ||
0e1862bb | 8529 | if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
a06ea964 NC |
8530 | { |
8531 | asection *s = htab->root.splt; | |
8532 | ||
8533 | /* If this is the first .plt entry, make room for the special | |
8534 | first entry. */ | |
8535 | if (s->size == 0) | |
8536 | s->size += htab->plt_header_size; | |
8537 | ||
8538 | h->plt.offset = s->size; | |
8539 | ||
8540 | /* If this symbol is not defined in a regular file, and we are | |
8541 | not generating a shared library, then set the symbol to this | |
8542 | location in the .plt. This is required to make function | |
8543 | pointers compare as equal between the normal executable and | |
8544 | the shared library. */ | |
0e1862bb | 8545 | if (!bfd_link_pic (info) && !h->def_regular) |
a06ea964 NC |
8546 | { |
8547 | h->root.u.def.section = s; | |
8548 | h->root.u.def.value = h->plt.offset; | |
8549 | } | |
8550 | ||
8551 | /* Make room for this entry. For now we only create the | |
8552 | small model PLT entries. We later need to find a way | |
8553 | of relaxing into these from the large model PLT entries. */ | |
37c18eed | 8554 | s->size += htab->plt_entry_size; |
a06ea964 NC |
8555 | |
8556 | /* We also need to make an entry in the .got.plt section, which | |
8557 | will be placed in the .got section by the linker script. */ | |
8558 | htab->root.sgotplt->size += GOT_ENTRY_SIZE; | |
8559 | ||
8560 | /* We also need to make an entry in the .rela.plt section. */ | |
8561 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8562 | ||
8563 | /* We need to ensure that all GOT entries that serve the PLT | |
8564 | are consecutive with the special GOT slots [0] [1] and | |
8565 | [2]. Any addtional relocations, such as | |
8566 | R_AARCH64_TLSDESC, must be placed after the PLT related | |
8567 | entries. We abuse the reloc_count such that during | |
8568 | sizing we adjust reloc_count to indicate the number of | |
8569 | PLT related reserved entries. In subsequent phases when | |
8570 | filling in the contents of the reloc entries, PLT related | |
8571 | entries are placed by computing their PLT index (0 | |
8572 | .. reloc_count). While other none PLT relocs are placed | |
8573 | at the slot indicated by reloc_count and reloc_count is | |
8574 | updated. */ | |
8575 | ||
8576 | htab->root.srelplt->reloc_count++; | |
823710d5 SN |
8577 | |
8578 | /* Mark the DSO in case R_<CLS>_JUMP_SLOT relocs against | |
8579 | variant PCS symbols are present. */ | |
8580 | if (h->other & STO_AARCH64_VARIANT_PCS) | |
8581 | htab->variant_pcs = 1; | |
8582 | ||
a06ea964 NC |
8583 | } |
8584 | else | |
8585 | { | |
8586 | h->plt.offset = (bfd_vma) - 1; | |
8587 | h->needs_plt = 0; | |
8588 | } | |
8589 | } | |
8590 | else | |
8591 | { | |
8592 | h->plt.offset = (bfd_vma) - 1; | |
8593 | h->needs_plt = 0; | |
8594 | } | |
8595 | ||
cec5225b | 8596 | eh = (struct elf_aarch64_link_hash_entry *) h; |
a06ea964 NC |
8597 | eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; |
8598 | ||
8599 | if (h->got.refcount > 0) | |
8600 | { | |
8601 | bfd_boolean dyn; | |
cec5225b | 8602 | unsigned got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
8603 | |
8604 | h->got.offset = (bfd_vma) - 1; | |
8605 | ||
8606 | dyn = htab->root.dynamic_sections_created; | |
8607 | ||
8608 | /* Make sure this symbol is output as a dynamic symbol. | |
07d6d2b8 | 8609 | Undefined weak syms won't yet be marked as dynamic. */ |
ff07562f JW |
8610 | if (dyn && h->dynindx == -1 && !h->forced_local |
8611 | && h->root.type == bfd_link_hash_undefweak) | |
a06ea964 NC |
8612 | { |
8613 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
8614 | return FALSE; | |
8615 | } | |
8616 | ||
8617 | if (got_type == GOT_UNKNOWN) | |
8618 | { | |
8619 | } | |
8620 | else if (got_type == GOT_NORMAL) | |
8621 | { | |
8622 | h->got.offset = htab->root.sgot->size; | |
8623 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8624 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8625 | || h->root.type != bfd_link_hash_undefweak) | |
0e1862bb | 8626 | && (bfd_link_pic (info) |
a377ae2a SN |
8627 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) |
8628 | /* Undefined weak symbol in static PIE resolves to 0 without | |
8629 | any dynamic relocations. */ | |
8630 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
a06ea964 NC |
8631 | { |
8632 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
8633 | } | |
8634 | } | |
8635 | else | |
8636 | { | |
8637 | int indx; | |
8638 | if (got_type & GOT_TLSDESC_GD) | |
8639 | { | |
8640 | eh->tlsdesc_got_jump_table_offset = | |
8641 | (htab->root.sgotplt->size | |
8642 | - aarch64_compute_jump_table_size (htab)); | |
8643 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
8644 | h->got.offset = (bfd_vma) - 2; | |
8645 | } | |
8646 | ||
8647 | if (got_type & GOT_TLS_GD) | |
8648 | { | |
8649 | h->got.offset = htab->root.sgot->size; | |
8650 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
8651 | } | |
8652 | ||
8653 | if (got_type & GOT_TLS_IE) | |
8654 | { | |
8655 | h->got.offset = htab->root.sgot->size; | |
8656 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8657 | } | |
8658 | ||
8659 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
8660 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8661 | || h->root.type != bfd_link_hash_undefweak) | |
6dda7875 | 8662 | && (!bfd_link_executable (info) |
a06ea964 NC |
8663 | || indx != 0 |
8664 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
8665 | { | |
8666 | if (got_type & GOT_TLSDESC_GD) | |
8667 | { | |
8668 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8669 | /* Note reloc_count not incremented here! We have | |
8670 | already adjusted reloc_count for this relocation | |
8671 | type. */ | |
8672 | ||
8673 | /* TLSDESC PLT is now needed, but not yet determined. */ | |
8674 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
8675 | } | |
8676 | ||
8677 | if (got_type & GOT_TLS_GD) | |
8678 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
8679 | ||
8680 | if (got_type & GOT_TLS_IE) | |
8681 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
8682 | } | |
8683 | } | |
8684 | } | |
8685 | else | |
8686 | { | |
8687 | h->got.offset = (bfd_vma) - 1; | |
8688 | } | |
8689 | ||
8690 | if (eh->dyn_relocs == NULL) | |
8691 | return TRUE; | |
8692 | ||
8693 | /* In the shared -Bsymbolic case, discard space allocated for | |
8694 | dynamic pc-relative relocs against symbols which turn out to be | |
8695 | defined in regular objects. For the normal shared case, discard | |
8696 | space for pc-relative relocs that have become local due to symbol | |
8697 | visibility changes. */ | |
8698 | ||
0e1862bb | 8699 | if (bfd_link_pic (info)) |
a06ea964 NC |
8700 | { |
8701 | /* Relocs that use pc_count are those that appear on a call | |
07d6d2b8 AM |
8702 | insn, or certain REL relocs that can generated via assembly. |
8703 | We want calls to protected symbols to resolve directly to the | |
8704 | function rather than going via the plt. If people want | |
8705 | function pointer comparisons to work as expected then they | |
8706 | should avoid writing weird assembly. */ | |
a06ea964 NC |
8707 | if (SYMBOL_CALLS_LOCAL (info, h)) |
8708 | { | |
8709 | struct elf_dyn_relocs **pp; | |
8710 | ||
8711 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) | |
8712 | { | |
8713 | p->count -= p->pc_count; | |
8714 | p->pc_count = 0; | |
8715 | if (p->count == 0) | |
8716 | *pp = p->next; | |
8717 | else | |
8718 | pp = &p->next; | |
8719 | } | |
8720 | } | |
8721 | ||
8722 | /* Also discard relocs on undefined weak syms with non-default | |
07d6d2b8 | 8723 | visibility. */ |
a06ea964 NC |
8724 | if (eh->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak) |
8725 | { | |
ddb7fd0f L |
8726 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
8727 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
a06ea964 NC |
8728 | eh->dyn_relocs = NULL; |
8729 | ||
8730 | /* Make sure undefined weak symbols are output as a dynamic | |
8731 | symbol in PIEs. */ | |
8732 | else if (h->dynindx == -1 | |
8733 | && !h->forced_local | |
ff07562f | 8734 | && h->root.type == bfd_link_hash_undefweak |
a06ea964 NC |
8735 | && !bfd_elf_link_record_dynamic_symbol (info, h)) |
8736 | return FALSE; | |
8737 | } | |
8738 | ||
8739 | } | |
8740 | else if (ELIMINATE_COPY_RELOCS) | |
8741 | { | |
8742 | /* For the non-shared case, discard space for relocs against | |
07d6d2b8 AM |
8743 | symbols which turn out to need copy relocs or are not |
8744 | dynamic. */ | |
a06ea964 NC |
8745 | |
8746 | if (!h->non_got_ref | |
8747 | && ((h->def_dynamic | |
8748 | && !h->def_regular) | |
8749 | || (htab->root.dynamic_sections_created | |
8750 | && (h->root.type == bfd_link_hash_undefweak | |
8751 | || h->root.type == bfd_link_hash_undefined)))) | |
8752 | { | |
8753 | /* Make sure this symbol is output as a dynamic symbol. | |
8754 | Undefined weak syms won't yet be marked as dynamic. */ | |
8755 | if (h->dynindx == -1 | |
8756 | && !h->forced_local | |
ff07562f | 8757 | && h->root.type == bfd_link_hash_undefweak |
a06ea964 NC |
8758 | && !bfd_elf_link_record_dynamic_symbol (info, h)) |
8759 | return FALSE; | |
8760 | ||
8761 | /* If that succeeded, we know we'll be keeping all the | |
8762 | relocs. */ | |
8763 | if (h->dynindx != -1) | |
8764 | goto keep; | |
8765 | } | |
8766 | ||
8767 | eh->dyn_relocs = NULL; | |
8768 | ||
8769 | keep:; | |
8770 | } | |
8771 | ||
8772 | /* Finally, allocate space. */ | |
8773 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
8774 | { | |
8775 | asection *sreloc; | |
8776 | ||
8777 | sreloc = elf_section_data (p->sec)->sreloc; | |
8778 | ||
8779 | BFD_ASSERT (sreloc != NULL); | |
8780 | ||
8781 | sreloc->size += p->count * RELOC_SIZE (htab); | |
8782 | } | |
8783 | ||
8784 | return TRUE; | |
8785 | } | |
8786 | ||
1419bbe5 WN |
8787 | /* Allocate space in .plt, .got and associated reloc sections for |
8788 | ifunc dynamic relocs. */ | |
8789 | ||
8790 | static bfd_boolean | |
8791 | elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h, | |
8792 | void *inf) | |
8793 | { | |
8794 | struct bfd_link_info *info; | |
8795 | struct elf_aarch64_link_hash_table *htab; | |
8796 | struct elf_aarch64_link_hash_entry *eh; | |
8797 | ||
8798 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
8799 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
8800 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
8801 | ||
8802 | There is no need to process bfd_link_hash_indirect symbols here | |
8803 | because we will also be presented with the concrete instance of | |
8804 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been | |
8805 | called to copy all relevant data from the generic to the concrete | |
2d0ca824 | 8806 | symbol instance. */ |
1419bbe5 WN |
8807 | if (h->root.type == bfd_link_hash_indirect) |
8808 | return TRUE; | |
8809 | ||
8810 | if (h->root.type == bfd_link_hash_warning) | |
8811 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8812 | ||
8813 | info = (struct bfd_link_info *) inf; | |
8814 | htab = elf_aarch64_hash_table (info); | |
8815 | ||
8816 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
8817 | ||
8818 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it | |
8819 | here if it is defined and referenced in a non-shared object. */ | |
8820 | if (h->type == STT_GNU_IFUNC | |
8821 | && h->def_regular) | |
8822 | return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, | |
8823 | &eh->dyn_relocs, | |
2df3368d | 8824 | NULL, |
1419bbe5 WN |
8825 | htab->plt_entry_size, |
8826 | htab->plt_header_size, | |
233cc9c1 L |
8827 | GOT_ENTRY_SIZE, |
8828 | FALSE); | |
1419bbe5 WN |
8829 | return TRUE; |
8830 | } | |
8831 | ||
1419bbe5 WN |
8832 | /* Allocate space in .plt, .got and associated reloc sections for |
8833 | local ifunc dynamic relocs. */ | |
8834 | ||
8835 | static bfd_boolean | |
8836 | elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf) | |
8837 | { | |
8838 | struct elf_link_hash_entry *h | |
8839 | = (struct elf_link_hash_entry *) *slot; | |
8840 | ||
8841 | if (h->type != STT_GNU_IFUNC | |
8842 | || !h->def_regular | |
8843 | || !h->ref_regular | |
8844 | || !h->forced_local | |
8845 | || h->root.type != bfd_link_hash_defined) | |
8846 | abort (); | |
8847 | ||
8848 | return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf); | |
8849 | } | |
a06ea964 | 8850 | |
63c1f59d AM |
8851 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to |
8852 | read-only sections. */ | |
c2170589 JW |
8853 | |
8854 | static bfd_boolean | |
63c1f59d | 8855 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) |
c2170589 | 8856 | { |
63c1f59d | 8857 | asection *sec; |
c2170589 | 8858 | |
63c1f59d AM |
8859 | if (h->root.type == bfd_link_hash_indirect) |
8860 | return TRUE; | |
c2170589 | 8861 | |
63c1f59d AM |
8862 | sec = readonly_dynrelocs (h); |
8863 | if (sec != NULL) | |
8864 | { | |
8865 | struct bfd_link_info *info = (struct bfd_link_info *) info_p; | |
c2170589 | 8866 | |
63c1f59d AM |
8867 | info->flags |= DF_TEXTREL; |
8868 | info->callbacks->minfo | |
c1c8c1ef | 8869 | (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), |
63c1f59d | 8870 | sec->owner, h->root.root.string, sec); |
c2170589 | 8871 | |
63c1f59d AM |
8872 | /* Not an error, just cut short the traversal. */ |
8873 | return FALSE; | |
c2170589 JW |
8874 | } |
8875 | return TRUE; | |
8876 | } | |
8877 | ||
a06ea964 NC |
8878 | /* This is the most important function of all . Innocuosly named |
8879 | though ! */ | |
2d0ca824 | 8880 | |
a06ea964 | 8881 | static bfd_boolean |
cec5225b | 8882 | elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
8883 | struct bfd_link_info *info) |
8884 | { | |
cec5225b | 8885 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
8886 | bfd *dynobj; |
8887 | asection *s; | |
8888 | bfd_boolean relocs; | |
8889 | bfd *ibfd; | |
8890 | ||
cec5225b | 8891 | htab = elf_aarch64_hash_table ((info)); |
a06ea964 NC |
8892 | dynobj = htab->root.dynobj; |
8893 | ||
8894 | BFD_ASSERT (dynobj != NULL); | |
8895 | ||
8896 | if (htab->root.dynamic_sections_created) | |
8897 | { | |
9b8b325a | 8898 | if (bfd_link_executable (info) && !info->nointerp) |
a06ea964 NC |
8899 | { |
8900 | s = bfd_get_linker_section (dynobj, ".interp"); | |
8901 | if (s == NULL) | |
8902 | abort (); | |
8903 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
8904 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
8905 | } | |
8906 | } | |
8907 | ||
8908 | /* Set up .got offsets for local syms, and space for local dynamic | |
8909 | relocs. */ | |
c72f2fb2 | 8910 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
a06ea964 NC |
8911 | { |
8912 | struct elf_aarch64_local_symbol *locals = NULL; | |
8913 | Elf_Internal_Shdr *symtab_hdr; | |
8914 | asection *srel; | |
8915 | unsigned int i; | |
8916 | ||
8917 | if (!is_aarch64_elf (ibfd)) | |
8918 | continue; | |
8919 | ||
8920 | for (s = ibfd->sections; s != NULL; s = s->next) | |
8921 | { | |
8922 | struct elf_dyn_relocs *p; | |
8923 | ||
8924 | for (p = (struct elf_dyn_relocs *) | |
8925 | (elf_section_data (s)->local_dynrel); p != NULL; p = p->next) | |
8926 | { | |
8927 | if (!bfd_is_abs_section (p->sec) | |
8928 | && bfd_is_abs_section (p->sec->output_section)) | |
8929 | { | |
8930 | /* Input section has been discarded, either because | |
8931 | it is a copy of a linkonce section or due to | |
8932 | linker script /DISCARD/, so we'll be discarding | |
8933 | the relocs too. */ | |
8934 | } | |
8935 | else if (p->count != 0) | |
8936 | { | |
8937 | srel = elf_section_data (p->sec)->sreloc; | |
8938 | srel->size += p->count * RELOC_SIZE (htab); | |
8939 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
8940 | info->flags |= DF_TEXTREL; | |
8941 | } | |
8942 | } | |
8943 | } | |
8944 | ||
cec5225b | 8945 | locals = elf_aarch64_locals (ibfd); |
a06ea964 NC |
8946 | if (!locals) |
8947 | continue; | |
8948 | ||
8949 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
8950 | srel = htab->root.srelgot; | |
8951 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
8952 | { | |
8953 | locals[i].got_offset = (bfd_vma) - 1; | |
8954 | locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
8955 | if (locals[i].got_refcount > 0) | |
8956 | { | |
8957 | unsigned got_type = locals[i].got_type; | |
8958 | if (got_type & GOT_TLSDESC_GD) | |
8959 | { | |
8960 | locals[i].tlsdesc_got_jump_table_offset = | |
8961 | (htab->root.sgotplt->size | |
8962 | - aarch64_compute_jump_table_size (htab)); | |
8963 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
8964 | locals[i].got_offset = (bfd_vma) - 2; | |
8965 | } | |
8966 | ||
8967 | if (got_type & GOT_TLS_GD) | |
8968 | { | |
8969 | locals[i].got_offset = htab->root.sgot->size; | |
8970 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
8971 | } | |
8972 | ||
b53b1bed JW |
8973 | if (got_type & GOT_TLS_IE |
8974 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
8975 | { |
8976 | locals[i].got_offset = htab->root.sgot->size; | |
8977 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8978 | } | |
8979 | ||
8980 | if (got_type == GOT_UNKNOWN) | |
8981 | { | |
8982 | } | |
8983 | ||
0e1862bb | 8984 | if (bfd_link_pic (info)) |
a06ea964 NC |
8985 | { |
8986 | if (got_type & GOT_TLSDESC_GD) | |
8987 | { | |
8988 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8989 | /* Note RELOC_COUNT not incremented here! */ | |
8990 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
8991 | } | |
8992 | ||
8993 | if (got_type & GOT_TLS_GD) | |
8994 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
8995 | ||
b53b1bed JW |
8996 | if (got_type & GOT_TLS_IE |
8997 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
8998 | htab->root.srelgot->size += RELOC_SIZE (htab); |
8999 | } | |
9000 | } | |
9001 | else | |
9002 | { | |
9003 | locals[i].got_refcount = (bfd_vma) - 1; | |
9004 | } | |
9005 | } | |
9006 | } | |
9007 | ||
9008 | ||
9009 | /* Allocate global sym .plt and .got entries, and space for global | |
9010 | sym dynamic relocs. */ | |
cec5225b | 9011 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs, |
a06ea964 NC |
9012 | info); |
9013 | ||
1419bbe5 WN |
9014 | /* Allocate global ifunc sym .plt and .got entries, and space for global |
9015 | ifunc sym dynamic relocs. */ | |
9016 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs, | |
9017 | info); | |
9018 | ||
1419bbe5 WN |
9019 | /* Allocate .plt and .got entries, and space for local ifunc symbols. */ |
9020 | htab_traverse (htab->loc_hash_table, | |
9021 | elfNN_aarch64_allocate_local_ifunc_dynrelocs, | |
9022 | info); | |
a06ea964 NC |
9023 | |
9024 | /* For every jump slot reserved in the sgotplt, reloc_count is | |
9025 | incremented. However, when we reserve space for TLS descriptors, | |
9026 | it's not incremented, so in order to compute the space reserved | |
9027 | for them, it suffices to multiply the reloc count by the jump | |
9028 | slot size. */ | |
9029 | ||
9030 | if (htab->root.srelplt) | |
8847944f | 9031 | htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab); |
a06ea964 NC |
9032 | |
9033 | if (htab->tlsdesc_plt) | |
9034 | { | |
9035 | if (htab->root.splt->size == 0) | |
37c18eed | 9036 | htab->root.splt->size += htab->plt_header_size; |
a06ea964 | 9037 | |
a06ea964 | 9038 | /* If we're not using lazy TLS relocations, don't generate the |
ce12121b | 9039 | GOT and PLT entry required. */ |
a06ea964 NC |
9040 | if (!(info->flags & DF_BIND_NOW)) |
9041 | { | |
ce12121b TC |
9042 | htab->tlsdesc_plt = htab->root.splt->size; |
9043 | htab->root.splt->size += htab->tlsdesc_plt_entry_size; | |
9044 | ||
a06ea964 NC |
9045 | htab->dt_tlsdesc_got = htab->root.sgot->size; |
9046 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
9047 | } | |
9048 | } | |
9049 | ||
68fcca92 | 9050 | /* Init mapping symbols information to use later to distingush between |
4106101c MS |
9051 | code and data while scanning for errata. */ |
9052 | if (htab->fix_erratum_835769 || htab->fix_erratum_843419) | |
68fcca92 JW |
9053 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
9054 | { | |
9055 | if (!is_aarch64_elf (ibfd)) | |
9056 | continue; | |
9057 | bfd_elfNN_aarch64_init_maps (ibfd); | |
9058 | } | |
9059 | ||
a06ea964 NC |
9060 | /* We now have determined the sizes of the various dynamic sections. |
9061 | Allocate memory for them. */ | |
9062 | relocs = FALSE; | |
9063 | for (s = dynobj->sections; s != NULL; s = s->next) | |
9064 | { | |
9065 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9066 | continue; | |
9067 | ||
9068 | if (s == htab->root.splt | |
9069 | || s == htab->root.sgot | |
9070 | || s == htab->root.sgotplt | |
9071 | || s == htab->root.iplt | |
9d19e4fd | 9072 | || s == htab->root.igotplt |
5474d94f AM |
9073 | || s == htab->root.sdynbss |
9074 | || s == htab->root.sdynrelro) | |
a06ea964 NC |
9075 | { |
9076 | /* Strip this section if we don't need it; see the | |
9077 | comment below. */ | |
9078 | } | |
fd361982 | 9079 | else if (CONST_STRNEQ (bfd_section_name (s), ".rela")) |
a06ea964 NC |
9080 | { |
9081 | if (s->size != 0 && s != htab->root.srelplt) | |
9082 | relocs = TRUE; | |
9083 | ||
9084 | /* We use the reloc_count field as a counter if we need | |
9085 | to copy relocs into the output file. */ | |
9086 | if (s != htab->root.srelplt) | |
9087 | s->reloc_count = 0; | |
9088 | } | |
9089 | else | |
9090 | { | |
9091 | /* It's not one of our sections, so don't allocate space. */ | |
9092 | continue; | |
9093 | } | |
9094 | ||
9095 | if (s->size == 0) | |
9096 | { | |
9097 | /* If we don't need this section, strip it from the | |
9098 | output file. This is mostly to handle .rela.bss and | |
9099 | .rela.plt. We must create both sections in | |
9100 | create_dynamic_sections, because they must be created | |
9101 | before the linker maps input sections to output | |
9102 | sections. The linker does that before | |
9103 | adjust_dynamic_symbol is called, and it is that | |
9104 | function which decides whether anything needs to go | |
9105 | into these sections. */ | |
a06ea964 NC |
9106 | s->flags |= SEC_EXCLUDE; |
9107 | continue; | |
9108 | } | |
9109 | ||
9110 | if ((s->flags & SEC_HAS_CONTENTS) == 0) | |
9111 | continue; | |
9112 | ||
9113 | /* Allocate memory for the section contents. We use bfd_zalloc | |
07d6d2b8 AM |
9114 | here in case unused entries are not reclaimed before the |
9115 | section's contents are written out. This should not happen, | |
9116 | but this way if it does, we get a R_AARCH64_NONE reloc instead | |
9117 | of garbage. */ | |
a06ea964 NC |
9118 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
9119 | if (s->contents == NULL) | |
9120 | return FALSE; | |
9121 | } | |
9122 | ||
9123 | if (htab->root.dynamic_sections_created) | |
9124 | { | |
9125 | /* Add some entries to the .dynamic section. We fill in the | |
07d6d2b8 AM |
9126 | values later, in elfNN_aarch64_finish_dynamic_sections, but we |
9127 | must add the entries now so that we get the correct size for | |
9128 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
9129 | dynamic linker and used by the debugger. */ | |
a06ea964 NC |
9130 | #define add_dynamic_entry(TAG, VAL) \ |
9131 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
9132 | ||
0e1862bb | 9133 | if (bfd_link_executable (info)) |
a06ea964 NC |
9134 | { |
9135 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
9136 | return FALSE; | |
9137 | } | |
9138 | ||
9139 | if (htab->root.splt->size != 0) | |
9140 | { | |
9141 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
9142 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
9143 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
9144 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
9145 | return FALSE; | |
9146 | ||
823710d5 SN |
9147 | if (htab->variant_pcs |
9148 | && !add_dynamic_entry (DT_AARCH64_VARIANT_PCS, 0)) | |
9149 | return FALSE; | |
9150 | ||
a06ea964 | 9151 | if (htab->tlsdesc_plt |
ce12121b | 9152 | && !(info->flags & DF_BIND_NOW) |
a06ea964 NC |
9153 | && (!add_dynamic_entry (DT_TLSDESC_PLT, 0) |
9154 | || !add_dynamic_entry (DT_TLSDESC_GOT, 0))) | |
9155 | return FALSE; | |
37c18eed | 9156 | |
1dbade74 SD |
9157 | if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_BTI_PAC) |
9158 | && (!add_dynamic_entry (DT_AARCH64_BTI_PLT, 0) | |
9159 | || !add_dynamic_entry (DT_AARCH64_PAC_PLT, 0))) | |
9160 | return FALSE; | |
9161 | ||
9162 | else if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_BTI) | |
9163 | && !add_dynamic_entry (DT_AARCH64_BTI_PLT, 0)) | |
9164 | return FALSE; | |
9165 | ||
9166 | else if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_PAC) | |
9167 | && !add_dynamic_entry (DT_AARCH64_PAC_PLT, 0)) | |
37c18eed | 9168 | return FALSE; |
a06ea964 NC |
9169 | } |
9170 | ||
9171 | if (relocs) | |
9172 | { | |
9173 | if (!add_dynamic_entry (DT_RELA, 0) | |
9174 | || !add_dynamic_entry (DT_RELASZ, 0) | |
9175 | || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) | |
9176 | return FALSE; | |
9177 | ||
9178 | /* If any dynamic relocs apply to a read-only section, | |
9179 | then we need a DT_TEXTREL entry. */ | |
c2170589 | 9180 | if ((info->flags & DF_TEXTREL) == 0) |
63c1f59d | 9181 | elf_link_hash_traverse (&htab->root, maybe_set_textrel, info); |
c2170589 | 9182 | |
a06ea964 NC |
9183 | if ((info->flags & DF_TEXTREL) != 0) |
9184 | { | |
9185 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
9186 | return FALSE; | |
9187 | } | |
9188 | } | |
9189 | } | |
9190 | #undef add_dynamic_entry | |
9191 | ||
9192 | return TRUE; | |
a06ea964 NC |
9193 | } |
9194 | ||
9195 | static inline void | |
caed7120 YZ |
9196 | elf_aarch64_update_plt_entry (bfd *output_bfd, |
9197 | bfd_reloc_code_real_type r_type, | |
9198 | bfd_byte *plt_entry, bfd_vma value) | |
a06ea964 | 9199 | { |
caed7120 YZ |
9200 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type); |
9201 | ||
1d75a8e2 NC |
9202 | /* FIXME: We should check the return value from this function call. */ |
9203 | (void) _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value); | |
a06ea964 NC |
9204 | } |
9205 | ||
9206 | static void | |
cec5225b YZ |
9207 | elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h, |
9208 | struct elf_aarch64_link_hash_table | |
1419bbe5 WN |
9209 | *htab, bfd *output_bfd, |
9210 | struct bfd_link_info *info) | |
a06ea964 NC |
9211 | { |
9212 | bfd_byte *plt_entry; | |
9213 | bfd_vma plt_index; | |
9214 | bfd_vma got_offset; | |
9215 | bfd_vma gotplt_entry_address; | |
9216 | bfd_vma plt_entry_address; | |
9217 | Elf_Internal_Rela rela; | |
9218 | bfd_byte *loc; | |
1419bbe5 WN |
9219 | asection *plt, *gotplt, *relplt; |
9220 | ||
9221 | /* When building a static executable, use .iplt, .igot.plt and | |
9222 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
9223 | if (htab->root.splt != NULL) | |
9224 | { | |
9225 | plt = htab->root.splt; | |
9226 | gotplt = htab->root.sgotplt; | |
9227 | relplt = htab->root.srelplt; | |
9228 | } | |
9229 | else | |
9230 | { | |
9231 | plt = htab->root.iplt; | |
9232 | gotplt = htab->root.igotplt; | |
9233 | relplt = htab->root.irelplt; | |
9234 | } | |
9235 | ||
9236 | /* Get the index in the procedure linkage table which | |
9237 | corresponds to this symbol. This is the index of this symbol | |
9238 | in all the symbols for which we are making plt entries. The | |
9239 | first entry in the procedure linkage table is reserved. | |
a06ea964 | 9240 | |
1419bbe5 WN |
9241 | Get the offset into the .got table of the entry that |
9242 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE | |
9243 | bytes. The first three are reserved for the dynamic linker. | |
692e2b8b | 9244 | |
1419bbe5 WN |
9245 | For static executables, we don't reserve anything. */ |
9246 | ||
9247 | if (plt == htab->root.splt) | |
9248 | { | |
9249 | plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size; | |
9250 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
9251 | } | |
9252 | else | |
9253 | { | |
9254 | plt_index = h->plt.offset / htab->plt_entry_size; | |
9255 | got_offset = plt_index * GOT_ENTRY_SIZE; | |
9256 | } | |
9257 | ||
9258 | plt_entry = plt->contents + h->plt.offset; | |
9259 | plt_entry_address = plt->output_section->vma | |
f44a1f8e | 9260 | + plt->output_offset + h->plt.offset; |
1419bbe5 WN |
9261 | gotplt_entry_address = gotplt->output_section->vma + |
9262 | gotplt->output_offset + got_offset; | |
a06ea964 NC |
9263 | |
9264 | /* Copy in the boiler-plate for the PLTn entry. */ | |
37c18eed SD |
9265 | memcpy (plt_entry, htab->plt_entry, htab->plt_entry_size); |
9266 | ||
9267 | /* First instruction in BTI enabled PLT stub is a BTI | |
9268 | instruction so skip it. */ | |
9269 | if (elf_aarch64_tdata (output_bfd)->plt_type & PLT_BTI | |
9270 | && elf_elfheader (output_bfd)->e_type == ET_EXEC) | |
9271 | plt_entry = plt_entry + 4; | |
a06ea964 NC |
9272 | |
9273 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
9274 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 YZ |
9275 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
9276 | plt_entry, | |
9277 | PG (gotplt_entry_address) - | |
9278 | PG (plt_entry_address)); | |
a06ea964 NC |
9279 | |
9280 | /* Fill in the lo12 bits for the load from the pltgot. */ | |
caed7120 YZ |
9281 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
9282 | plt_entry + 4, | |
9283 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 | 9284 | |
9aff4b7a | 9285 | /* Fill in the lo12 bits for the add from the pltgot entry. */ |
caed7120 YZ |
9286 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
9287 | plt_entry + 8, | |
9288 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 NC |
9289 | |
9290 | /* All the GOTPLT Entries are essentially initialized to PLT0. */ | |
cec5225b | 9291 | bfd_put_NN (output_bfd, |
1419bbe5 WN |
9292 | plt->output_section->vma + plt->output_offset, |
9293 | gotplt->contents + got_offset); | |
a06ea964 | 9294 | |
a06ea964 | 9295 | rela.r_offset = gotplt_entry_address; |
1419bbe5 WN |
9296 | |
9297 | if (h->dynindx == -1 | |
0e1862bb | 9298 | || ((bfd_link_executable (info) |
1419bbe5 WN |
9299 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
9300 | && h->def_regular | |
9301 | && h->type == STT_GNU_IFUNC)) | |
9302 | { | |
9303 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
9304 | R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */ | |
9305 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
9306 | rela.r_addend = (h->root.u.def.value | |
9307 | + h->root.u.def.section->output_section->vma | |
9308 | + h->root.u.def.section->output_offset); | |
9309 | } | |
9310 | else | |
9311 | { | |
9312 | /* Fill in the entry in the .rela.plt section. */ | |
9313 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT)); | |
9314 | rela.r_addend = 0; | |
9315 | } | |
a06ea964 NC |
9316 | |
9317 | /* Compute the relocation entry to used based on PLT index and do | |
9318 | not adjust reloc_count. The reloc_count has already been adjusted | |
9319 | to account for this entry. */ | |
1419bbe5 | 9320 | loc = relplt->contents + plt_index * RELOC_SIZE (htab); |
cec5225b | 9321 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
9322 | } |
9323 | ||
9324 | /* Size sections even though they're not dynamic. We use it to setup | |
9325 | _TLS_MODULE_BASE_, if needed. */ | |
9326 | ||
9327 | static bfd_boolean | |
cec5225b | 9328 | elfNN_aarch64_always_size_sections (bfd *output_bfd, |
a06ea964 NC |
9329 | struct bfd_link_info *info) |
9330 | { | |
9331 | asection *tls_sec; | |
9332 | ||
0e1862bb | 9333 | if (bfd_link_relocatable (info)) |
a06ea964 NC |
9334 | return TRUE; |
9335 | ||
9336 | tls_sec = elf_hash_table (info)->tls_sec; | |
9337 | ||
9338 | if (tls_sec) | |
9339 | { | |
9340 | struct elf_link_hash_entry *tlsbase; | |
9341 | ||
9342 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
9343 | "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE); | |
9344 | ||
9345 | if (tlsbase) | |
9346 | { | |
9347 | struct bfd_link_hash_entry *h = NULL; | |
9348 | const struct elf_backend_data *bed = | |
9349 | get_elf_backend_data (output_bfd); | |
9350 | ||
9351 | if (!(_bfd_generic_link_add_one_symbol | |
9352 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
9353 | tls_sec, 0, NULL, FALSE, bed->collect, &h))) | |
9354 | return FALSE; | |
9355 | ||
9356 | tlsbase->type = STT_TLS; | |
9357 | tlsbase = (struct elf_link_hash_entry *) h; | |
9358 | tlsbase->def_regular = 1; | |
9359 | tlsbase->other = STV_HIDDEN; | |
9360 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
9361 | } | |
9362 | } | |
9363 | ||
9364 | return TRUE; | |
9365 | } | |
9366 | ||
9367 | /* Finish up dynamic symbol handling. We set the contents of various | |
9368 | dynamic sections here. */ | |
2d0ca824 | 9369 | |
a06ea964 | 9370 | static bfd_boolean |
cec5225b | 9371 | elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd, |
a06ea964 NC |
9372 | struct bfd_link_info *info, |
9373 | struct elf_link_hash_entry *h, | |
9374 | Elf_Internal_Sym *sym) | |
9375 | { | |
cec5225b YZ |
9376 | struct elf_aarch64_link_hash_table *htab; |
9377 | htab = elf_aarch64_hash_table (info); | |
a06ea964 NC |
9378 | |
9379 | if (h->plt.offset != (bfd_vma) - 1) | |
9380 | { | |
1419bbe5 WN |
9381 | asection *plt, *gotplt, *relplt; |
9382 | ||
a06ea964 | 9383 | /* This symbol has an entry in the procedure linkage table. Set |
07d6d2b8 | 9384 | it up. */ |
a06ea964 | 9385 | |
1419bbe5 WN |
9386 | /* When building a static executable, use .iplt, .igot.plt and |
9387 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
9388 | if (htab->root.splt != NULL) | |
9389 | { | |
9390 | plt = htab->root.splt; | |
9391 | gotplt = htab->root.sgotplt; | |
9392 | relplt = htab->root.srelplt; | |
9393 | } | |
9394 | else | |
9395 | { | |
9396 | plt = htab->root.iplt; | |
9397 | gotplt = htab->root.igotplt; | |
9398 | relplt = htab->root.irelplt; | |
9399 | } | |
9400 | ||
9401 | /* This symbol has an entry in the procedure linkage table. Set | |
9402 | it up. */ | |
9403 | if ((h->dynindx == -1 | |
0e1862bb | 9404 | && !((h->forced_local || bfd_link_executable (info)) |
1419bbe5 WN |
9405 | && h->def_regular |
9406 | && h->type == STT_GNU_IFUNC)) | |
9407 | || plt == NULL | |
9408 | || gotplt == NULL | |
9409 | || relplt == NULL) | |
f955cccf | 9410 | return FALSE; |
a06ea964 | 9411 | |
1419bbe5 | 9412 | elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info); |
a06ea964 NC |
9413 | if (!h->def_regular) |
9414 | { | |
9415 | /* Mark the symbol as undefined, rather than as defined in | |
46b87d49 | 9416 | the .plt section. */ |
a06ea964 | 9417 | sym->st_shndx = SHN_UNDEF; |
46b87d49 WN |
9418 | /* If the symbol is weak we need to clear the value. |
9419 | Otherwise, the PLT entry would provide a definition for | |
9420 | the symbol even if the symbol wasn't defined anywhere, | |
9421 | and so the symbol would never be NULL. Leave the value if | |
9422 | there were any relocations where pointer equality matters | |
9423 | (this is a clue for the dynamic linker, to make function | |
9424 | pointer comparisons work between an application and shared | |
9425 | library). */ | |
9426 | if (!h->ref_regular_nonweak || !h->pointer_equality_needed) | |
9427 | sym->st_value = 0; | |
a06ea964 NC |
9428 | } |
9429 | } | |
9430 | ||
9431 | if (h->got.offset != (bfd_vma) - 1 | |
a377ae2a SN |
9432 | && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL |
9433 | /* Undefined weak symbol in static PIE resolves to 0 without | |
9434 | any dynamic relocations. */ | |
9435 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
a06ea964 NC |
9436 | { |
9437 | Elf_Internal_Rela rela; | |
9438 | bfd_byte *loc; | |
9439 | ||
9440 | /* This symbol has an entry in the global offset table. Set it | |
07d6d2b8 | 9441 | up. */ |
a06ea964 NC |
9442 | if (htab->root.sgot == NULL || htab->root.srelgot == NULL) |
9443 | abort (); | |
9444 | ||
9445 | rela.r_offset = (htab->root.sgot->output_section->vma | |
9446 | + htab->root.sgot->output_offset | |
9447 | + (h->got.offset & ~(bfd_vma) 1)); | |
9448 | ||
49206388 WN |
9449 | if (h->def_regular |
9450 | && h->type == STT_GNU_IFUNC) | |
9451 | { | |
0e1862bb | 9452 | if (bfd_link_pic (info)) |
49206388 WN |
9453 | { |
9454 | /* Generate R_AARCH64_GLOB_DAT. */ | |
9455 | goto do_glob_dat; | |
9456 | } | |
9457 | else | |
9458 | { | |
9459 | asection *plt; | |
9460 | ||
9461 | if (!h->pointer_equality_needed) | |
9462 | abort (); | |
9463 | ||
9464 | /* For non-shared object, we can't use .got.plt, which | |
9465 | contains the real function address if we need pointer | |
9466 | equality. We load the GOT entry with the PLT entry. */ | |
9467 | plt = htab->root.splt ? htab->root.splt : htab->root.iplt; | |
9468 | bfd_put_NN (output_bfd, (plt->output_section->vma | |
9469 | + plt->output_offset | |
9470 | + h->plt.offset), | |
9471 | htab->root.sgot->contents | |
9472 | + (h->got.offset & ~(bfd_vma) 1)); | |
9473 | return TRUE; | |
9474 | } | |
9475 | } | |
0e1862bb | 9476 | else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h)) |
a06ea964 | 9477 | { |
0ee3a6db | 9478 | if (!(h->def_regular || ELF_COMMON_DEF_P (h))) |
a06ea964 NC |
9479 | return FALSE; |
9480 | ||
9481 | BFD_ASSERT ((h->got.offset & 1) != 0); | |
a6bb11b2 | 9482 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); |
a06ea964 NC |
9483 | rela.r_addend = (h->root.u.def.value |
9484 | + h->root.u.def.section->output_section->vma | |
9485 | + h->root.u.def.section->output_offset); | |
9486 | } | |
9487 | else | |
9488 | { | |
49206388 | 9489 | do_glob_dat: |
a06ea964 | 9490 | BFD_ASSERT ((h->got.offset & 1) == 0); |
cec5225b | 9491 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 | 9492 | htab->root.sgot->contents + h->got.offset); |
a6bb11b2 | 9493 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT)); |
a06ea964 NC |
9494 | rela.r_addend = 0; |
9495 | } | |
9496 | ||
9497 | loc = htab->root.srelgot->contents; | |
9498 | loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 9499 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
9500 | } |
9501 | ||
9502 | if (h->needs_copy) | |
9503 | { | |
9504 | Elf_Internal_Rela rela; | |
5474d94f | 9505 | asection *s; |
a06ea964 NC |
9506 | bfd_byte *loc; |
9507 | ||
9508 | /* This symbol needs a copy reloc. Set it up. */ | |
a06ea964 NC |
9509 | if (h->dynindx == -1 |
9510 | || (h->root.type != bfd_link_hash_defined | |
9511 | && h->root.type != bfd_link_hash_defweak) | |
9d19e4fd | 9512 | || htab->root.srelbss == NULL) |
a06ea964 NC |
9513 | abort (); |
9514 | ||
9515 | rela.r_offset = (h->root.u.def.value | |
9516 | + h->root.u.def.section->output_section->vma | |
9517 | + h->root.u.def.section->output_offset); | |
a6bb11b2 | 9518 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY)); |
a06ea964 | 9519 | rela.r_addend = 0; |
afbf7e8e | 9520 | if (h->root.u.def.section == htab->root.sdynrelro) |
5474d94f AM |
9521 | s = htab->root.sreldynrelro; |
9522 | else | |
9523 | s = htab->root.srelbss; | |
9524 | loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 9525 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
9526 | } |
9527 | ||
9528 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may | |
9529 | be NULL for local symbols. */ | |
9530 | if (sym != NULL | |
9637f6ef | 9531 | && (h == elf_hash_table (info)->hdynamic |
a06ea964 NC |
9532 | || h == elf_hash_table (info)->hgot)) |
9533 | sym->st_shndx = SHN_ABS; | |
9534 | ||
9535 | return TRUE; | |
9536 | } | |
9537 | ||
1419bbe5 WN |
9538 | /* Finish up local dynamic symbol handling. We set the contents of |
9539 | various dynamic sections here. */ | |
9540 | ||
9541 | static bfd_boolean | |
9542 | elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf) | |
9543 | { | |
9544 | struct elf_link_hash_entry *h | |
9545 | = (struct elf_link_hash_entry *) *slot; | |
9546 | struct bfd_link_info *info | |
9547 | = (struct bfd_link_info *) inf; | |
9548 | ||
9549 | return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd, | |
9550 | info, h, NULL); | |
9551 | } | |
9552 | ||
a06ea964 | 9553 | static void |
cec5225b YZ |
9554 | elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED, |
9555 | struct elf_aarch64_link_hash_table | |
a06ea964 NC |
9556 | *htab) |
9557 | { | |
9558 | /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between | |
9559 | small and large plts and at the minute just generates | |
9560 | the small PLT. */ | |
9561 | ||
cec5225b | 9562 | /* PLT0 of the small PLT looks like this in ELF64 - |
a06ea964 NC |
9563 | stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack. |
9564 | adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT | |
9565 | ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the | |
9566 | // symbol resolver | |
9567 | add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the | |
9568 | // GOTPLT entry for this. | |
9569 | br x17 | |
cec5225b | 9570 | PLT0 will be slightly different in ELF32 due to different got entry |
2d0ca824 | 9571 | size. */ |
caed7120 | 9572 | bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */ |
a06ea964 NC |
9573 | bfd_vma plt_base; |
9574 | ||
9575 | ||
37c18eed SD |
9576 | memcpy (htab->root.splt->contents, htab->plt0_entry, |
9577 | htab->plt_header_size); | |
a06ea964 | 9578 | elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize = |
37c18eed | 9579 | htab->plt_header_size; |
a06ea964 | 9580 | |
caed7120 YZ |
9581 | plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma |
9582 | + htab->root.sgotplt->output_offset | |
9583 | + GOT_ENTRY_SIZE * 2); | |
a06ea964 NC |
9584 | |
9585 | plt_base = htab->root.splt->output_section->vma + | |
f44a1f8e | 9586 | htab->root.splt->output_offset; |
a06ea964 | 9587 | |
37c18eed SD |
9588 | /* First instruction in BTI enabled PLT stub is a BTI |
9589 | instruction so skip it. */ | |
9590 | bfd_byte *plt0_entry = htab->root.splt->contents; | |
9591 | if (elf_aarch64_tdata (output_bfd)->plt_type & PLT_BTI) | |
9592 | plt0_entry = plt0_entry + 4; | |
9593 | ||
a06ea964 NC |
9594 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. |
9595 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 | 9596 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
37c18eed | 9597 | plt0_entry + 4, |
caed7120 | 9598 | PG (plt_got_2nd_ent) - PG (plt_base + 4)); |
a06ea964 | 9599 | |
caed7120 | 9600 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
37c18eed | 9601 | plt0_entry + 8, |
caed7120 | 9602 | PG_OFFSET (plt_got_2nd_ent)); |
a06ea964 | 9603 | |
caed7120 | 9604 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
37c18eed | 9605 | plt0_entry + 12, |
caed7120 | 9606 | PG_OFFSET (plt_got_2nd_ent)); |
a06ea964 NC |
9607 | } |
9608 | ||
9609 | static bfd_boolean | |
cec5225b | 9610 | elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd, |
a06ea964 NC |
9611 | struct bfd_link_info *info) |
9612 | { | |
cec5225b | 9613 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
9614 | bfd *dynobj; |
9615 | asection *sdyn; | |
9616 | ||
cec5225b | 9617 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
9618 | dynobj = htab->root.dynobj; |
9619 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); | |
9620 | ||
9621 | if (htab->root.dynamic_sections_created) | |
9622 | { | |
cec5225b | 9623 | ElfNN_External_Dyn *dyncon, *dynconend; |
a06ea964 NC |
9624 | |
9625 | if (sdyn == NULL || htab->root.sgot == NULL) | |
9626 | abort (); | |
9627 | ||
cec5225b YZ |
9628 | dyncon = (ElfNN_External_Dyn *) sdyn->contents; |
9629 | dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size); | |
a06ea964 NC |
9630 | for (; dyncon < dynconend; dyncon++) |
9631 | { | |
9632 | Elf_Internal_Dyn dyn; | |
9633 | asection *s; | |
9634 | ||
cec5225b | 9635 | bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn); |
a06ea964 NC |
9636 | |
9637 | switch (dyn.d_tag) | |
9638 | { | |
9639 | default: | |
9640 | continue; | |
9641 | ||
9642 | case DT_PLTGOT: | |
9643 | s = htab->root.sgotplt; | |
9644 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
9645 | break; | |
9646 | ||
9647 | case DT_JMPREL: | |
4ade44b7 AM |
9648 | s = htab->root.srelplt; |
9649 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
a06ea964 NC |
9650 | break; |
9651 | ||
9652 | case DT_PLTRELSZ: | |
c955de36 | 9653 | s = htab->root.srelplt; |
a06ea964 NC |
9654 | dyn.d_un.d_val = s->size; |
9655 | break; | |
9656 | ||
a06ea964 NC |
9657 | case DT_TLSDESC_PLT: |
9658 | s = htab->root.splt; | |
9659 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
9660 | + htab->tlsdesc_plt; | |
9661 | break; | |
9662 | ||
9663 | case DT_TLSDESC_GOT: | |
9664 | s = htab->root.sgot; | |
ce12121b | 9665 | BFD_ASSERT (htab->dt_tlsdesc_got != (bfd_vma)-1); |
a06ea964 NC |
9666 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset |
9667 | + htab->dt_tlsdesc_got; | |
9668 | break; | |
9669 | } | |
9670 | ||
cec5225b | 9671 | bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon); |
a06ea964 NC |
9672 | } |
9673 | ||
9674 | } | |
9675 | ||
9676 | /* Fill in the special first entry in the procedure linkage table. */ | |
9677 | if (htab->root.splt && htab->root.splt->size > 0) | |
9678 | { | |
cec5225b | 9679 | elfNN_aarch64_init_small_plt0_entry (output_bfd, htab); |
a06ea964 NC |
9680 | |
9681 | elf_section_data (htab->root.splt->output_section)-> | |
9682 | this_hdr.sh_entsize = htab->plt_entry_size; | |
9683 | ||
9684 | ||
ce12121b | 9685 | if (htab->tlsdesc_plt && !(info->flags & DF_BIND_NOW)) |
a06ea964 | 9686 | { |
ce12121b | 9687 | BFD_ASSERT (htab->dt_tlsdesc_got != (bfd_vma)-1); |
cec5225b | 9688 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
9689 | htab->root.sgot->contents + htab->dt_tlsdesc_got); |
9690 | ||
37c18eed SD |
9691 | const bfd_byte *entry = elfNN_aarch64_tlsdesc_small_plt_entry; |
9692 | htab->tlsdesc_plt_entry_size = PLT_TLSDESC_ENTRY_SIZE; | |
9693 | ||
9694 | aarch64_plt_type type = elf_aarch64_tdata (output_bfd)->plt_type; | |
1dbade74 | 9695 | if (type == PLT_BTI || type == PLT_BTI_PAC) |
37c18eed SD |
9696 | { |
9697 | entry = elfNN_aarch64_tlsdesc_small_plt_bti_entry; | |
37c18eed SD |
9698 | } |
9699 | ||
a06ea964 | 9700 | memcpy (htab->root.splt->contents + htab->tlsdesc_plt, |
37c18eed | 9701 | entry, htab->tlsdesc_plt_entry_size); |
a06ea964 NC |
9702 | |
9703 | { | |
9704 | bfd_vma adrp1_addr = | |
9705 | htab->root.splt->output_section->vma | |
9706 | + htab->root.splt->output_offset + htab->tlsdesc_plt + 4; | |
9707 | ||
caed7120 | 9708 | bfd_vma adrp2_addr = adrp1_addr + 4; |
a06ea964 NC |
9709 | |
9710 | bfd_vma got_addr = | |
9711 | htab->root.sgot->output_section->vma | |
9712 | + htab->root.sgot->output_offset; | |
9713 | ||
9714 | bfd_vma pltgot_addr = | |
9715 | htab->root.sgotplt->output_section->vma | |
9716 | + htab->root.sgotplt->output_offset; | |
9717 | ||
9718 | bfd_vma dt_tlsdesc_got = got_addr + htab->dt_tlsdesc_got; | |
caed7120 YZ |
9719 | |
9720 | bfd_byte *plt_entry = | |
9721 | htab->root.splt->contents + htab->tlsdesc_plt; | |
a06ea964 | 9722 | |
37c18eed SD |
9723 | /* First instruction in BTI enabled PLT stub is a BTI |
9724 | instruction so skip it. */ | |
9725 | if (type & PLT_BTI) | |
9726 | { | |
9727 | plt_entry = plt_entry + 4; | |
9728 | adrp1_addr = adrp1_addr + 4; | |
9729 | adrp2_addr = adrp2_addr + 4; | |
9730 | } | |
9731 | ||
a06ea964 | 9732 | /* adrp x2, DT_TLSDESC_GOT */ |
caed7120 YZ |
9733 | elf_aarch64_update_plt_entry (output_bfd, |
9734 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
9735 | plt_entry + 4, | |
9736 | (PG (dt_tlsdesc_got) | |
9737 | - PG (adrp1_addr))); | |
a06ea964 NC |
9738 | |
9739 | /* adrp x3, 0 */ | |
caed7120 YZ |
9740 | elf_aarch64_update_plt_entry (output_bfd, |
9741 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
9742 | plt_entry + 8, | |
9743 | (PG (pltgot_addr) | |
9744 | - PG (adrp2_addr))); | |
a06ea964 NC |
9745 | |
9746 | /* ldr x2, [x2, #0] */ | |
caed7120 YZ |
9747 | elf_aarch64_update_plt_entry (output_bfd, |
9748 | BFD_RELOC_AARCH64_LDSTNN_LO12, | |
9749 | plt_entry + 12, | |
9750 | PG_OFFSET (dt_tlsdesc_got)); | |
a06ea964 NC |
9751 | |
9752 | /* add x3, x3, 0 */ | |
caed7120 YZ |
9753 | elf_aarch64_update_plt_entry (output_bfd, |
9754 | BFD_RELOC_AARCH64_ADD_LO12, | |
9755 | plt_entry + 16, | |
9756 | PG_OFFSET (pltgot_addr)); | |
a06ea964 NC |
9757 | } |
9758 | } | |
9759 | } | |
9760 | ||
9761 | if (htab->root.sgotplt) | |
9762 | { | |
9763 | if (bfd_is_abs_section (htab->root.sgotplt->output_section)) | |
9764 | { | |
4eca0228 | 9765 | _bfd_error_handler |
871b3ab2 | 9766 | (_("discarded output section: `%pA'"), htab->root.sgotplt); |
a06ea964 NC |
9767 | return FALSE; |
9768 | } | |
9769 | ||
9770 | /* Fill in the first three entries in the global offset table. */ | |
9771 | if (htab->root.sgotplt->size > 0) | |
9772 | { | |
8db339a6 MS |
9773 | bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents); |
9774 | ||
a06ea964 | 9775 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ |
cec5225b | 9776 | bfd_put_NN (output_bfd, |
a06ea964 NC |
9777 | (bfd_vma) 0, |
9778 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE); | |
cec5225b | 9779 | bfd_put_NN (output_bfd, |
a06ea964 NC |
9780 | (bfd_vma) 0, |
9781 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2); | |
9782 | } | |
9783 | ||
8db339a6 MS |
9784 | if (htab->root.sgot) |
9785 | { | |
9786 | if (htab->root.sgot->size > 0) | |
9787 | { | |
9788 | bfd_vma addr = | |
9789 | sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0; | |
9790 | bfd_put_NN (output_bfd, addr, htab->root.sgot->contents); | |
9791 | } | |
9792 | } | |
9793 | ||
a06ea964 NC |
9794 | elf_section_data (htab->root.sgotplt->output_section)-> |
9795 | this_hdr.sh_entsize = GOT_ENTRY_SIZE; | |
9796 | } | |
9797 | ||
9798 | if (htab->root.sgot && htab->root.sgot->size > 0) | |
9799 | elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize | |
9800 | = GOT_ENTRY_SIZE; | |
9801 | ||
1419bbe5 WN |
9802 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
9803 | htab_traverse (htab->loc_hash_table, | |
9804 | elfNN_aarch64_finish_local_dynamic_symbol, | |
9805 | info); | |
9806 | ||
a06ea964 NC |
9807 | return TRUE; |
9808 | } | |
9809 | ||
37c18eed SD |
9810 | /* Check if BTI enabled PLTs are needed. Returns the type needed. */ |
9811 | static aarch64_plt_type | |
9812 | get_plt_type (bfd *abfd) | |
9813 | { | |
9814 | aarch64_plt_type ret = PLT_NORMAL; | |
9815 | bfd_byte *contents, *extdyn, *extdynend; | |
9816 | asection *sec = bfd_get_section_by_name (abfd, ".dynamic"); | |
9817 | if (!sec || !bfd_malloc_and_get_section (abfd, sec, &contents)) | |
9818 | return ret; | |
9819 | extdyn = contents; | |
9820 | extdynend = contents + sec->size; | |
9821 | for (; extdyn < extdynend; extdyn += sizeof (ElfNN_External_Dyn)) | |
9822 | { | |
9823 | Elf_Internal_Dyn dyn; | |
9824 | bfd_elfNN_swap_dyn_in (abfd, extdyn, &dyn); | |
9825 | ||
9826 | /* Let's check the processor specific dynamic array tags. */ | |
9827 | bfd_vma tag = dyn.d_tag; | |
9828 | if (tag < DT_LOPROC || tag > DT_HIPROC) | |
9829 | continue; | |
9830 | ||
9831 | switch (tag) | |
9832 | { | |
9833 | case DT_AARCH64_BTI_PLT: | |
1dbade74 SD |
9834 | ret |= PLT_BTI; |
9835 | break; | |
9836 | ||
9837 | case DT_AARCH64_PAC_PLT: | |
9838 | ret |= PLT_PAC; | |
37c18eed SD |
9839 | break; |
9840 | ||
9841 | default: break; | |
9842 | } | |
9843 | } | |
9844 | free (contents); | |
9845 | return ret; | |
9846 | } | |
9847 | ||
9848 | static long | |
9849 | elfNN_aarch64_get_synthetic_symtab (bfd *abfd, | |
9850 | long symcount, | |
9851 | asymbol **syms, | |
9852 | long dynsymcount, | |
9853 | asymbol **dynsyms, | |
9854 | asymbol **ret) | |
9855 | { | |
9856 | elf_aarch64_tdata (abfd)->plt_type = get_plt_type (abfd); | |
9857 | return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms, | |
9858 | dynsymcount, dynsyms, ret); | |
9859 | } | |
9860 | ||
a06ea964 NC |
9861 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
9862 | or (bfd_vma) -1 if it should not be included. */ | |
9863 | ||
9864 | static bfd_vma | |
cec5225b | 9865 | elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt, |
a06ea964 NC |
9866 | const arelent *rel ATTRIBUTE_UNUSED) |
9867 | { | |
37c18eed SD |
9868 | size_t plt0_size = PLT_ENTRY_SIZE; |
9869 | size_t pltn_size = PLT_SMALL_ENTRY_SIZE; | |
9870 | ||
1dbade74 SD |
9871 | if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_BTI_PAC) |
9872 | { | |
1dbade74 SD |
9873 | if (elf_elfheader (plt->owner)->e_type == ET_EXEC) |
9874 | pltn_size = PLT_BTI_PAC_SMALL_ENTRY_SIZE; | |
9875 | else | |
9876 | pltn_size = PLT_PAC_SMALL_ENTRY_SIZE; | |
9877 | } | |
9878 | else if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_BTI) | |
37c18eed | 9879 | { |
37c18eed SD |
9880 | if (elf_elfheader (plt->owner)->e_type == ET_EXEC) |
9881 | pltn_size = PLT_BTI_SMALL_ENTRY_SIZE; | |
9882 | } | |
1dbade74 SD |
9883 | else if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_PAC) |
9884 | { | |
1dbade74 SD |
9885 | pltn_size = PLT_PAC_SMALL_ENTRY_SIZE; |
9886 | } | |
9887 | ||
37c18eed | 9888 | return plt->vma + plt0_size + i * pltn_size; |
a06ea964 NC |
9889 | } |
9890 | ||
d691934d NC |
9891 | /* Returns TRUE if NAME is an AArch64 mapping symbol. |
9892 | The ARM ELF standard defines $x (for A64 code) and $d (for data). | |
9893 | It also allows a period initiated suffix to be added to the symbol, ie: | |
9894 | "$[adtx]\.[:sym_char]+". */ | |
9895 | ||
9896 | static bfd_boolean | |
9897 | is_aarch64_mapping_symbol (const char * name) | |
9898 | { | |
9899 | return name != NULL /* Paranoia. */ | |
9900 | && name[0] == '$' /* Note: if objcopy --prefix-symbols has been used then | |
9901 | the mapping symbols could have acquired a prefix. | |
9902 | We do not support this here, since such symbols no | |
9903 | longer conform to the ARM ELF ABI. */ | |
9904 | && (name[1] == 'd' || name[1] == 'x') | |
9905 | && (name[2] == 0 || name[2] == '.'); | |
9906 | /* FIXME: Strictly speaking the symbol is only a valid mapping symbol if | |
9907 | any characters that follow the period are legal characters for the body | |
9908 | of a symbol's name. For now we just assume that this is the case. */ | |
9909 | } | |
9910 | ||
9911 | /* Make sure that mapping symbols in object files are not removed via the | |
9912 | "strip --strip-unneeded" tool. These symbols might needed in order to | |
9913 | correctly generate linked files. Once an object file has been linked, | |
9914 | it should be safe to remove them. */ | |
9915 | ||
9916 | static void | |
9917 | elfNN_aarch64_backend_symbol_processing (bfd *abfd, asymbol *sym) | |
9918 | { | |
9919 | if (((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
9920 | && sym->section != bfd_abs_section_ptr | |
9921 | && is_aarch64_mapping_symbol (sym->name)) | |
9922 | sym->flags |= BSF_KEEP; | |
9923 | } | |
9924 | ||
cd702818 SD |
9925 | /* Implement elf_backend_setup_gnu_properties for AArch64. It serves as a |
9926 | wrapper function for _bfd_aarch64_elf_link_setup_gnu_properties to account | |
9927 | for the effect of GNU properties of the output_bfd. */ | |
9928 | static bfd * | |
9929 | elfNN_aarch64_link_setup_gnu_properties (struct bfd_link_info *info) | |
9930 | { | |
9931 | uint32_t prop = elf_aarch64_tdata (info->output_bfd)->gnu_and_prop; | |
9932 | bfd *pbfd = _bfd_aarch64_elf_link_setup_gnu_properties (info, &prop); | |
9933 | elf_aarch64_tdata (info->output_bfd)->gnu_and_prop = prop; | |
37c18eed SD |
9934 | elf_aarch64_tdata (info->output_bfd)->plt_type |
9935 | |= (prop & GNU_PROPERTY_AARCH64_FEATURE_1_BTI) ? PLT_BTI : 0; | |
9936 | setup_plt_values (info, elf_aarch64_tdata (info->output_bfd)->plt_type); | |
cd702818 SD |
9937 | return pbfd; |
9938 | } | |
9939 | ||
9940 | /* Implement elf_backend_merge_gnu_properties for AArch64. It serves as a | |
9941 | wrapper function for _bfd_aarch64_elf_merge_gnu_properties to account | |
9942 | for the effect of GNU properties of the output_bfd. */ | |
9943 | static bfd_boolean | |
9944 | elfNN_aarch64_merge_gnu_properties (struct bfd_link_info *info, | |
4e539114 | 9945 | bfd *abfd, bfd *bbfd, |
cd702818 SD |
9946 | elf_property *aprop, |
9947 | elf_property *bprop) | |
9948 | { | |
9949 | uint32_t prop | |
9950 | = elf_aarch64_tdata (info->output_bfd)->gnu_and_prop; | |
37c18eed SD |
9951 | |
9952 | /* If output has been marked with BTI using command line argument, give out | |
9953 | warning if necessary. */ | |
4e539114 SD |
9954 | /* Properties are merged per type, hence only check for warnings when merging |
9955 | GNU_PROPERTY_AARCH64_FEATURE_1_AND. */ | |
9956 | if (((aprop && aprop->pr_type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) | |
9957 | || (bprop && bprop->pr_type == GNU_PROPERTY_AARCH64_FEATURE_1_AND)) | |
9958 | && (prop & GNU_PROPERTY_AARCH64_FEATURE_1_BTI) | |
37c18eed SD |
9959 | && (!elf_aarch64_tdata (info->output_bfd)->no_bti_warn)) |
9960 | { | |
9961 | if ((aprop && !(aprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI)) | |
4e539114 | 9962 | || !aprop) |
37c18eed | 9963 | { |
8bf6d176 | 9964 | _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when " |
4e539114 SD |
9965 | "all inputs do not have BTI in NOTE section."), |
9966 | abfd); | |
9967 | } | |
9968 | if ((bprop && !(bprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI)) | |
9969 | || !bprop) | |
9970 | { | |
8bf6d176 | 9971 | _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when " |
4e539114 SD |
9972 | "all inputs do not have BTI in NOTE section."), |
9973 | bbfd); | |
37c18eed SD |
9974 | } |
9975 | } | |
9976 | ||
cd702818 SD |
9977 | return _bfd_aarch64_elf_merge_gnu_properties (info, abfd, aprop, |
9978 | bprop, prop); | |
9979 | } | |
a06ea964 NC |
9980 | |
9981 | /* We use this so we can override certain functions | |
9982 | (though currently we don't). */ | |
9983 | ||
cec5225b | 9984 | const struct elf_size_info elfNN_aarch64_size_info = |
a06ea964 | 9985 | { |
cec5225b YZ |
9986 | sizeof (ElfNN_External_Ehdr), |
9987 | sizeof (ElfNN_External_Phdr), | |
9988 | sizeof (ElfNN_External_Shdr), | |
9989 | sizeof (ElfNN_External_Rel), | |
9990 | sizeof (ElfNN_External_Rela), | |
9991 | sizeof (ElfNN_External_Sym), | |
9992 | sizeof (ElfNN_External_Dyn), | |
a06ea964 NC |
9993 | sizeof (Elf_External_Note), |
9994 | 4, /* Hash table entry size. */ | |
9995 | 1, /* Internal relocs per external relocs. */ | |
cec5225b YZ |
9996 | ARCH_SIZE, /* Arch size. */ |
9997 | LOG_FILE_ALIGN, /* Log_file_align. */ | |
9998 | ELFCLASSNN, EV_CURRENT, | |
9999 | bfd_elfNN_write_out_phdrs, | |
10000 | bfd_elfNN_write_shdrs_and_ehdr, | |
10001 | bfd_elfNN_checksum_contents, | |
10002 | bfd_elfNN_write_relocs, | |
10003 | bfd_elfNN_swap_symbol_in, | |
10004 | bfd_elfNN_swap_symbol_out, | |
10005 | bfd_elfNN_slurp_reloc_table, | |
10006 | bfd_elfNN_slurp_symbol_table, | |
10007 | bfd_elfNN_swap_dyn_in, | |
10008 | bfd_elfNN_swap_dyn_out, | |
10009 | bfd_elfNN_swap_reloc_in, | |
10010 | bfd_elfNN_swap_reloc_out, | |
10011 | bfd_elfNN_swap_reloca_in, | |
10012 | bfd_elfNN_swap_reloca_out | |
a06ea964 NC |
10013 | }; |
10014 | ||
10015 | #define ELF_ARCH bfd_arch_aarch64 | |
10016 | #define ELF_MACHINE_CODE EM_AARCH64 | |
10017 | #define ELF_MAXPAGESIZE 0x10000 | |
10018 | #define ELF_MINPAGESIZE 0x1000 | |
10019 | #define ELF_COMMONPAGESIZE 0x1000 | |
10020 | ||
07d6d2b8 | 10021 | #define bfd_elfNN_close_and_cleanup \ |
cec5225b | 10022 | elfNN_aarch64_close_and_cleanup |
a06ea964 | 10023 | |
07d6d2b8 | 10024 | #define bfd_elfNN_bfd_free_cached_info \ |
cec5225b | 10025 | elfNN_aarch64_bfd_free_cached_info |
a06ea964 | 10026 | |
cec5225b YZ |
10027 | #define bfd_elfNN_bfd_is_target_special_symbol \ |
10028 | elfNN_aarch64_is_target_special_symbol | |
a06ea964 | 10029 | |
07d6d2b8 | 10030 | #define bfd_elfNN_bfd_link_hash_table_create \ |
cec5225b | 10031 | elfNN_aarch64_link_hash_table_create |
a06ea964 | 10032 | |
cec5225b YZ |
10033 | #define bfd_elfNN_bfd_merge_private_bfd_data \ |
10034 | elfNN_aarch64_merge_private_bfd_data | |
a06ea964 | 10035 | |
cec5225b YZ |
10036 | #define bfd_elfNN_bfd_print_private_bfd_data \ |
10037 | elfNN_aarch64_print_private_bfd_data | |
a06ea964 | 10038 | |
cec5225b YZ |
10039 | #define bfd_elfNN_bfd_reloc_type_lookup \ |
10040 | elfNN_aarch64_reloc_type_lookup | |
a06ea964 | 10041 | |
cec5225b YZ |
10042 | #define bfd_elfNN_bfd_reloc_name_lookup \ |
10043 | elfNN_aarch64_reloc_name_lookup | |
a06ea964 | 10044 | |
cec5225b YZ |
10045 | #define bfd_elfNN_bfd_set_private_flags \ |
10046 | elfNN_aarch64_set_private_flags | |
a06ea964 | 10047 | |
cec5225b YZ |
10048 | #define bfd_elfNN_find_inliner_info \ |
10049 | elfNN_aarch64_find_inliner_info | |
a06ea964 | 10050 | |
37c18eed SD |
10051 | #define bfd_elfNN_get_synthetic_symtab \ |
10052 | elfNN_aarch64_get_synthetic_symtab | |
10053 | ||
cec5225b YZ |
10054 | #define bfd_elfNN_mkobject \ |
10055 | elfNN_aarch64_mkobject | |
a06ea964 | 10056 | |
cec5225b YZ |
10057 | #define bfd_elfNN_new_section_hook \ |
10058 | elfNN_aarch64_new_section_hook | |
a06ea964 NC |
10059 | |
10060 | #define elf_backend_adjust_dynamic_symbol \ | |
cec5225b | 10061 | elfNN_aarch64_adjust_dynamic_symbol |
a06ea964 NC |
10062 | |
10063 | #define elf_backend_always_size_sections \ | |
cec5225b | 10064 | elfNN_aarch64_always_size_sections |
a06ea964 NC |
10065 | |
10066 | #define elf_backend_check_relocs \ | |
cec5225b | 10067 | elfNN_aarch64_check_relocs |
a06ea964 NC |
10068 | |
10069 | #define elf_backend_copy_indirect_symbol \ | |
cec5225b | 10070 | elfNN_aarch64_copy_indirect_symbol |
a06ea964 | 10071 | |
823710d5 SN |
10072 | #define elf_backend_merge_symbol_attribute \ |
10073 | elfNN_aarch64_merge_symbol_attribute | |
10074 | ||
a06ea964 NC |
10075 | /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts |
10076 | to them in our hash. */ | |
10077 | #define elf_backend_create_dynamic_sections \ | |
cec5225b | 10078 | elfNN_aarch64_create_dynamic_sections |
a06ea964 NC |
10079 | |
10080 | #define elf_backend_init_index_section \ | |
10081 | _bfd_elf_init_2_index_sections | |
10082 | ||
a06ea964 | 10083 | #define elf_backend_finish_dynamic_sections \ |
cec5225b | 10084 | elfNN_aarch64_finish_dynamic_sections |
a06ea964 NC |
10085 | |
10086 | #define elf_backend_finish_dynamic_symbol \ | |
cec5225b | 10087 | elfNN_aarch64_finish_dynamic_symbol |
a06ea964 | 10088 | |
a06ea964 | 10089 | #define elf_backend_object_p \ |
cec5225b | 10090 | elfNN_aarch64_object_p |
a06ea964 | 10091 | |
07d6d2b8 | 10092 | #define elf_backend_output_arch_local_syms \ |
cec5225b | 10093 | elfNN_aarch64_output_arch_local_syms |
a06ea964 | 10094 | |
e7679060 AM |
10095 | #define elf_backend_maybe_function_sym \ |
10096 | elfNN_aarch64_maybe_function_sym | |
10097 | ||
a06ea964 | 10098 | #define elf_backend_plt_sym_val \ |
cec5225b | 10099 | elfNN_aarch64_plt_sym_val |
a06ea964 | 10100 | |
ed7e9d0b AM |
10101 | #define elf_backend_init_file_header \ |
10102 | elfNN_aarch64_init_file_header | |
a06ea964 NC |
10103 | |
10104 | #define elf_backend_relocate_section \ | |
cec5225b | 10105 | elfNN_aarch64_relocate_section |
a06ea964 NC |
10106 | |
10107 | #define elf_backend_reloc_type_class \ | |
cec5225b | 10108 | elfNN_aarch64_reloc_type_class |
a06ea964 | 10109 | |
a06ea964 | 10110 | #define elf_backend_section_from_shdr \ |
cec5225b | 10111 | elfNN_aarch64_section_from_shdr |
a06ea964 NC |
10112 | |
10113 | #define elf_backend_size_dynamic_sections \ | |
cec5225b | 10114 | elfNN_aarch64_size_dynamic_sections |
a06ea964 NC |
10115 | |
10116 | #define elf_backend_size_info \ | |
cec5225b | 10117 | elfNN_aarch64_size_info |
a06ea964 | 10118 | |
68fcca92 JW |
10119 | #define elf_backend_write_section \ |
10120 | elfNN_aarch64_write_section | |
10121 | ||
d691934d NC |
10122 | #define elf_backend_symbol_processing \ |
10123 | elfNN_aarch64_backend_symbol_processing | |
10124 | ||
cd702818 SD |
10125 | #define elf_backend_setup_gnu_properties \ |
10126 | elfNN_aarch64_link_setup_gnu_properties | |
10127 | ||
10128 | #define elf_backend_merge_gnu_properties \ | |
10129 | elfNN_aarch64_merge_gnu_properties | |
10130 | ||
a06ea964 | 10131 | #define elf_backend_can_refcount 1 |
59c108f7 | 10132 | #define elf_backend_can_gc_sections 1 |
a06ea964 NC |
10133 | #define elf_backend_plt_readonly 1 |
10134 | #define elf_backend_want_got_plt 1 | |
10135 | #define elf_backend_want_plt_sym 0 | |
5474d94f | 10136 | #define elf_backend_want_dynrelro 1 |
a06ea964 NC |
10137 | #define elf_backend_may_use_rel_p 0 |
10138 | #define elf_backend_may_use_rela_p 1 | |
10139 | #define elf_backend_default_use_rela_p 1 | |
07d6d2b8 | 10140 | #define elf_backend_rela_normal 1 |
64f52338 | 10141 | #define elf_backend_dtrel_excludes_plt 1 |
a06ea964 | 10142 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3) |
c495064d | 10143 | #define elf_backend_default_execstack 0 |
32f573bc | 10144 | #define elf_backend_extern_protected_data 1 |
7f784814 | 10145 | #define elf_backend_hash_symbol elf_aarch64_hash_symbol |
a06ea964 | 10146 | |
07d6d2b8 | 10147 | #undef elf_backend_obj_attrs_section |
a06ea964 NC |
10148 | #define elf_backend_obj_attrs_section ".ARM.attributes" |
10149 | ||
cec5225b | 10150 | #include "elfNN-target.h" |
a75cf613 ES |
10151 | |
10152 | /* CloudABI support. */ | |
10153 | ||
10154 | #undef TARGET_LITTLE_SYM | |
10155 | #define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec | |
10156 | #undef TARGET_LITTLE_NAME | |
10157 | #define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi" | |
10158 | #undef TARGET_BIG_SYM | |
10159 | #define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec | |
10160 | #undef TARGET_BIG_NAME | |
10161 | #define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi" | |
10162 | ||
10163 | #undef ELF_OSABI | |
10164 | #define ELF_OSABI ELFOSABI_CLOUDABI | |
10165 | ||
10166 | #undef elfNN_bed | |
10167 | #define elfNN_bed elfNN_aarch64_cloudabi_bed | |
10168 | ||
10169 | #include "elfNN-target.h" |