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cec5225b | 1 | /* AArch64-specific support for NN-bit ELF. |
a2c58332 | 2 | Copyright (C) 2009-2022 Free Software Foundation, Inc. |
a06ea964 NC |
3 | Contributed by ARM Ltd. |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; see the file COPYING3. If not, | |
19 | see <http://www.gnu.org/licenses/>. */ | |
20 | ||
21 | /* Notes on implementation: | |
22 | ||
23 | Thread Local Store (TLS) | |
24 | ||
25 | Overview: | |
26 | ||
27 | The implementation currently supports both traditional TLS and TLS | |
28 | descriptors, but only general dynamic (GD). | |
29 | ||
30 | For traditional TLS the assembler will present us with code | |
31 | fragments of the form: | |
32 | ||
33 | adrp x0, :tlsgd:foo | |
07d6d2b8 | 34 | R_AARCH64_TLSGD_ADR_PAGE21(foo) |
a06ea964 | 35 | add x0, :tlsgd_lo12:foo |
07d6d2b8 | 36 | R_AARCH64_TLSGD_ADD_LO12_NC(foo) |
a06ea964 NC |
37 | bl __tls_get_addr |
38 | nop | |
39 | ||
40 | For TLS descriptors the assembler will present us with code | |
41 | fragments of the form: | |
42 | ||
07d6d2b8 AM |
43 | adrp x0, :tlsdesc:foo R_AARCH64_TLSDESC_ADR_PAGE21(foo) |
44 | ldr x1, [x0, #:tlsdesc_lo12:foo] R_AARCH64_TLSDESC_LD64_LO12(foo) | |
45 | add x0, x0, #:tlsdesc_lo12:foo R_AARCH64_TLSDESC_ADD_LO12(foo) | |
a06ea964 | 46 | .tlsdesccall foo |
07d6d2b8 | 47 | blr x1 R_AARCH64_TLSDESC_CALL(foo) |
a06ea964 NC |
48 | |
49 | The relocations R_AARCH64_TLSGD_{ADR_PREL21,ADD_LO12_NC} against foo | |
50 | indicate that foo is thread local and should be accessed via the | |
51 | traditional TLS mechanims. | |
52 | ||
a6bb11b2 | 53 | The relocations R_AARCH64_TLSDESC_{ADR_PAGE21,LD64_LO12_NC,ADD_LO12_NC} |
a06ea964 NC |
54 | against foo indicate that 'foo' is thread local and should be accessed |
55 | via a TLS descriptor mechanism. | |
56 | ||
57 | The precise instruction sequence is only relevant from the | |
58 | perspective of linker relaxation which is currently not implemented. | |
59 | ||
60 | The static linker must detect that 'foo' is a TLS object and | |
61 | allocate a double GOT entry. The GOT entry must be created for both | |
62 | global and local TLS symbols. Note that this is different to none | |
63 | TLS local objects which do not need a GOT entry. | |
64 | ||
65 | In the traditional TLS mechanism, the double GOT entry is used to | |
66 | provide the tls_index structure, containing module and offset | |
a6bb11b2 | 67 | entries. The static linker places the relocation R_AARCH64_TLS_DTPMOD |
a06ea964 NC |
68 | on the module entry. The loader will subsequently fixup this |
69 | relocation with the module identity. | |
70 | ||
71 | For global traditional TLS symbols the static linker places an | |
a6bb11b2 | 72 | R_AARCH64_TLS_DTPREL relocation on the offset entry. The loader |
a06ea964 NC |
73 | will subsequently fixup the offset. For local TLS symbols the static |
74 | linker fixes up offset. | |
75 | ||
76 | In the TLS descriptor mechanism the double GOT entry is used to | |
77 | provide the descriptor. The static linker places the relocation | |
78 | R_AARCH64_TLSDESC on the first GOT slot. The loader will | |
79 | subsequently fix this up. | |
80 | ||
81 | Implementation: | |
82 | ||
83 | The handling of TLS symbols is implemented across a number of | |
84 | different backend functions. The following is a top level view of | |
85 | what processing is performed where. | |
86 | ||
87 | The TLS implementation maintains state information for each TLS | |
88 | symbol. The state information for local and global symbols is kept | |
89 | in different places. Global symbols use generic BFD structures while | |
90 | local symbols use backend specific structures that are allocated and | |
91 | maintained entirely by the backend. | |
92 | ||
93 | The flow: | |
94 | ||
cec5225b | 95 | elfNN_aarch64_check_relocs() |
a06ea964 NC |
96 | |
97 | This function is invoked for each relocation. | |
98 | ||
99 | The TLS relocations R_AARCH64_TLSGD_{ADR_PREL21,ADD_LO12_NC} and | |
a6bb11b2 | 100 | R_AARCH64_TLSDESC_{ADR_PAGE21,LD64_LO12_NC,ADD_LO12_NC} are |
a06ea964 NC |
101 | spotted. One time creation of local symbol data structures are |
102 | created when the first local symbol is seen. | |
103 | ||
104 | The reference count for a symbol is incremented. The GOT type for | |
105 | each symbol is marked as general dynamic. | |
106 | ||
cec5225b | 107 | elfNN_aarch64_allocate_dynrelocs () |
a06ea964 NC |
108 | |
109 | For each global with positive reference count we allocate a double | |
110 | GOT slot. For a traditional TLS symbol we allocate space for two | |
111 | relocation entries on the GOT, for a TLS descriptor symbol we | |
112 | allocate space for one relocation on the slot. Record the GOT offset | |
113 | for this symbol. | |
114 | ||
cec5225b | 115 | elfNN_aarch64_size_dynamic_sections () |
a06ea964 NC |
116 | |
117 | Iterate all input BFDS, look for in the local symbol data structure | |
118 | constructed earlier for local TLS symbols and allocate them double | |
119 | GOT slots along with space for a single GOT relocation. Update the | |
120 | local symbol structure to record the GOT offset allocated. | |
121 | ||
cec5225b | 122 | elfNN_aarch64_relocate_section () |
a06ea964 | 123 | |
cec5225b | 124 | Calls elfNN_aarch64_final_link_relocate () |
a06ea964 NC |
125 | |
126 | Emit the relevant TLS relocations against the GOT for each TLS | |
127 | symbol. For local TLS symbols emit the GOT offset directly. The GOT | |
128 | relocations are emitted once the first time a TLS symbol is | |
129 | encountered. The implementation uses the LSB of the GOT offset to | |
130 | flag that the relevant GOT relocations for a symbol have been | |
131 | emitted. All of the TLS code that uses the GOT offset needs to take | |
132 | care to mask out this flag bit before using the offset. | |
133 | ||
cec5225b | 134 | elfNN_aarch64_final_link_relocate () |
a06ea964 NC |
135 | |
136 | Fixup the R_AARCH64_TLSGD_{ADR_PREL21, ADD_LO12_NC} relocations. */ | |
137 | ||
138 | #include "sysdep.h" | |
139 | #include "bfd.h" | |
140 | #include "libiberty.h" | |
141 | #include "libbfd.h" | |
a06ea964 NC |
142 | #include "elf-bfd.h" |
143 | #include "bfdlink.h" | |
1419bbe5 | 144 | #include "objalloc.h" |
a06ea964 | 145 | #include "elf/aarch64.h" |
caed7120 | 146 | #include "elfxx-aarch64.h" |
a8bfaadb | 147 | #include "cpu-aarch64.h" |
a06ea964 | 148 | |
cec5225b YZ |
149 | #define ARCH_SIZE NN |
150 | ||
151 | #if ARCH_SIZE == 64 | |
152 | #define AARCH64_R(NAME) R_AARCH64_ ## NAME | |
153 | #define AARCH64_R_STR(NAME) "R_AARCH64_" #NAME | |
a6bb11b2 YZ |
154 | #define HOWTO64(...) HOWTO (__VA_ARGS__) |
155 | #define HOWTO32(...) EMPTY_HOWTO (0) | |
cec5225b | 156 | #define LOG_FILE_ALIGN 3 |
f955cccf | 157 | #define BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC BFD_RELOC_AARCH64_TLSDESC_LD64_LO12 |
cec5225b YZ |
158 | #endif |
159 | ||
160 | #if ARCH_SIZE == 32 | |
161 | #define AARCH64_R(NAME) R_AARCH64_P32_ ## NAME | |
162 | #define AARCH64_R_STR(NAME) "R_AARCH64_P32_" #NAME | |
a6bb11b2 YZ |
163 | #define HOWTO64(...) EMPTY_HOWTO (0) |
164 | #define HOWTO32(...) HOWTO (__VA_ARGS__) | |
cec5225b | 165 | #define LOG_FILE_ALIGN 2 |
07d6d2b8 AM |
166 | #define BFD_RELOC_AARCH64_TLSDESC_LD32_LO12 BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC |
167 | #define R_AARCH64_P32_TLSDESC_ADD_LO12 R_AARCH64_P32_TLSDESC_ADD_LO12_NC | |
cec5225b YZ |
168 | #endif |
169 | ||
a6bb11b2 | 170 | #define IS_AARCH64_TLS_RELOC(R_TYPE) \ |
4c0a9a6f JW |
171 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \ |
172 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \ | |
3c12b054 | 173 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \ |
3e8286c0 | 174 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \ |
1aa66fb1 | 175 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \ |
a6bb11b2 | 176 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \ |
a6bb11b2 | 177 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC \ |
4c0a9a6f | 178 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC \ |
a6bb11b2 | 179 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \ |
4c0a9a6f JW |
180 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC \ |
181 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1 \ | |
6ffe9a1b | 182 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12 \ |
40fbed84 | 183 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12 \ |
753999c1 | 184 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC \ |
73f925cc | 185 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \ |
f69e4920 | 186 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \ |
77a69ff8 | 187 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 \ |
07c9aa07 JW |
188 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12 \ |
189 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC \ | |
190 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12 \ | |
191 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC \ | |
192 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12 \ | |
193 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC \ | |
194 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12 \ | |
195 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC \ | |
6ffe9a1b JW |
196 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0 \ |
197 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC \ | |
198 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1 \ | |
199 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC \ | |
200 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2 \ | |
a6bb11b2 | 201 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 \ |
4c0a9a6f | 202 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12 \ |
a6bb11b2 | 203 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC \ |
e04ef022 RL |
204 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12 \ |
205 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC \ | |
206 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12 \ | |
207 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC \ | |
208 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12 \ | |
209 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC \ | |
210 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12 \ | |
211 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC \ | |
a6bb11b2 YZ |
212 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0 \ |
213 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC \ | |
4c0a9a6f JW |
214 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 \ |
215 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC \ | |
216 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 \ | |
a6bb11b2 YZ |
217 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPMOD \ |
218 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPREL \ | |
219 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_TPREL \ | |
a06ea964 NC |
220 | || IS_AARCH64_TLSDESC_RELOC ((R_TYPE))) |
221 | ||
9331eea1 | 222 | #define IS_AARCH64_TLS_RELAX_RELOC(R_TYPE) \ |
f955cccf NC |
223 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \ |
224 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12 \ | |
4af68b9c JW |
225 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \ |
226 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \ | |
227 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \ | |
228 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \ | |
229 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC \ | |
0484b454 RL |
230 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \ |
231 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \ | |
232 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1 \ | |
233 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \ | |
4af68b9c | 234 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \ |
9331eea1 JW |
235 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \ |
236 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \ | |
ac734732 RL |
237 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \ |
238 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \ | |
9331eea1 JW |
239 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \ |
240 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \ | |
241 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC \ | |
259364ad JW |
242 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \ |
243 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \ | |
4af68b9c | 244 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21) |
9331eea1 | 245 | |
a6bb11b2 | 246 | #define IS_AARCH64_TLSDESC_RELOC(R_TYPE) \ |
4c0a9a6f JW |
247 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC \ |
248 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \ | |
f955cccf | 249 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12 \ |
a6bb11b2 | 250 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \ |
389b8029 | 251 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \ |
4c0a9a6f | 252 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \ |
a6bb11b2 | 253 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC \ |
f955cccf | 254 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD64_LO12 \ |
a6bb11b2 | 255 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \ |
4c0a9a6f JW |
256 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \ |
257 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \ | |
258 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1) | |
a06ea964 | 259 | |
6353d82b | 260 | #define ELIMINATE_COPY_RELOCS 1 |
a06ea964 | 261 | |
a06ea964 | 262 | /* Return size of a relocation entry. HTAB is the bfd's |
cec5225b YZ |
263 | elf_aarch64_link_hash_entry. */ |
264 | #define RELOC_SIZE(HTAB) (sizeof (ElfNN_External_Rela)) | |
a06ea964 | 265 | |
cec5225b | 266 | /* GOT Entry size - 8 bytes in ELF64 and 4 bytes in ELF32. */ |
07d6d2b8 AM |
267 | #define GOT_ENTRY_SIZE (ARCH_SIZE / 8) |
268 | #define PLT_ENTRY_SIZE (32) | |
269 | #define PLT_SMALL_ENTRY_SIZE (16) | |
270 | #define PLT_TLSDESC_ENTRY_SIZE (32) | |
37c18eed | 271 | /* PLT sizes with BTI insn. */ |
68bb0359 | 272 | #define PLT_BTI_SMALL_ENTRY_SIZE (24) |
1dbade74 | 273 | /* PLT sizes with PAC insn. */ |
68bb0359 | 274 | #define PLT_PAC_SMALL_ENTRY_SIZE (24) |
1dbade74 | 275 | /* PLT sizes with BTI and PAC insn. */ |
1dbade74 | 276 | #define PLT_BTI_PAC_SMALL_ENTRY_SIZE (24) |
a06ea964 | 277 | |
2d0ca824 | 278 | /* Encoding of the nop instruction. */ |
a06ea964 NC |
279 | #define INSN_NOP 0xd503201f |
280 | ||
281 | #define aarch64_compute_jump_table_size(htab) \ | |
282 | (((htab)->root.srelplt == NULL) ? 0 \ | |
283 | : (htab)->root.srelplt->reloc_count * GOT_ENTRY_SIZE) | |
284 | ||
285 | /* The first entry in a procedure linkage table looks like this | |
286 | if the distance between the PLTGOT and the PLT is < 4GB use | |
287 | these PLT entries. Note that the dynamic linker gets &PLTGOT[2] | |
288 | in x16 and needs to work out PLTGOT[1] by using an address of | |
cec5225b YZ |
289 | [x16,#-GOT_ENTRY_SIZE]. */ |
290 | static const bfd_byte elfNN_aarch64_small_plt0_entry[PLT_ENTRY_SIZE] = | |
a06ea964 NC |
291 | { |
292 | 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */ | |
293 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */ | |
caed7120 | 294 | #if ARCH_SIZE == 64 |
a06ea964 NC |
295 | 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */ |
296 | 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */ | |
caed7120 YZ |
297 | #else |
298 | 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */ | |
299 | 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */ | |
300 | #endif | |
a06ea964 NC |
301 | 0x20, 0x02, 0x1f, 0xd6, /* br x17 */ |
302 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
303 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
304 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
305 | }; | |
306 | ||
68bb0359 | 307 | static const bfd_byte elfNN_aarch64_small_plt0_bti_entry[PLT_ENTRY_SIZE] = |
37c18eed SD |
308 | { |
309 | 0x5f, 0x24, 0x03, 0xd5, /* bti c. */ | |
310 | 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */ | |
311 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */ | |
312 | #if ARCH_SIZE == 64 | |
313 | 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */ | |
314 | 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */ | |
315 | #else | |
316 | 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */ | |
317 | 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */ | |
318 | #endif | |
319 | 0x20, 0x02, 0x1f, 0xd6, /* br x17 */ | |
320 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
321 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
1dbade74 SD |
322 | }; |
323 | ||
a06ea964 NC |
324 | /* Per function entry in a procedure linkage table looks like this |
325 | if the distance between the PLTGOT and the PLT is < 4GB use | |
37c18eed | 326 | these PLT entries. Use BTI versions of the PLTs when enabled. */ |
cec5225b | 327 | static const bfd_byte elfNN_aarch64_small_plt_entry[PLT_SMALL_ENTRY_SIZE] = |
a06ea964 NC |
328 | { |
329 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
caed7120 | 330 | #if ARCH_SIZE == 64 |
a06ea964 NC |
331 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ |
332 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
caed7120 YZ |
333 | #else |
334 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
335 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
336 | #endif | |
a06ea964 NC |
337 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ |
338 | }; | |
339 | ||
37c18eed SD |
340 | static const bfd_byte |
341 | elfNN_aarch64_small_plt_bti_entry[PLT_BTI_SMALL_ENTRY_SIZE] = | |
342 | { | |
343 | 0x5f, 0x24, 0x03, 0xd5, /* bti c. */ | |
344 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
345 | #if ARCH_SIZE == 64 | |
346 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ | |
347 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
348 | #else | |
349 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
350 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
351 | #endif | |
352 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ | |
68bb0359 | 353 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ |
37c18eed SD |
354 | }; |
355 | ||
1dbade74 SD |
356 | static const bfd_byte |
357 | elfNN_aarch64_small_plt_pac_entry[PLT_PAC_SMALL_ENTRY_SIZE] = | |
358 | { | |
359 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
360 | #if ARCH_SIZE == 64 | |
361 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ | |
362 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
363 | #else | |
364 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
365 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
366 | #endif | |
367 | 0x9f, 0x21, 0x03, 0xd5, /* autia1716 */ | |
368 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ | |
68bb0359 | 369 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ |
1dbade74 SD |
370 | }; |
371 | ||
372 | static const bfd_byte | |
373 | elfNN_aarch64_small_plt_bti_pac_entry[PLT_BTI_PAC_SMALL_ENTRY_SIZE] = | |
374 | { | |
375 | 0x5f, 0x24, 0x03, 0xd5, /* bti c. */ | |
376 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
377 | #if ARCH_SIZE == 64 | |
378 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ | |
379 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
380 | #else | |
381 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
382 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
383 | #endif | |
384 | 0x9f, 0x21, 0x03, 0xd5, /* autia1716 */ | |
385 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ | |
386 | }; | |
387 | ||
a06ea964 | 388 | static const bfd_byte |
cec5225b | 389 | elfNN_aarch64_tlsdesc_small_plt_entry[PLT_TLSDESC_ENTRY_SIZE] = |
a06ea964 NC |
390 | { |
391 | 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */ | |
392 | 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */ | |
393 | 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */ | |
caed7120 YZ |
394 | #if ARCH_SIZE == 64 |
395 | 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */ | |
a06ea964 | 396 | 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */ |
caed7120 YZ |
397 | #else |
398 | 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */ | |
399 | 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */ | |
400 | #endif | |
401 | 0x40, 0x00, 0x1f, 0xd6, /* br x2 */ | |
a06ea964 NC |
402 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ |
403 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
404 | }; | |
405 | ||
37c18eed | 406 | static const bfd_byte |
68bb0359 | 407 | elfNN_aarch64_tlsdesc_small_plt_bti_entry[PLT_TLSDESC_ENTRY_SIZE] = |
37c18eed SD |
408 | { |
409 | 0x5f, 0x24, 0x03, 0xd5, /* bti c. */ | |
410 | 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */ | |
411 | 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */ | |
412 | 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */ | |
413 | #if ARCH_SIZE == 64 | |
414 | 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */ | |
415 | 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */ | |
416 | #else | |
417 | 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */ | |
418 | 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */ | |
419 | #endif | |
420 | 0x40, 0x00, 0x1f, 0xd6, /* br x2 */ | |
421 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
37c18eed SD |
422 | }; |
423 | ||
07d6d2b8 AM |
424 | #define elf_info_to_howto elfNN_aarch64_info_to_howto |
425 | #define elf_info_to_howto_rel elfNN_aarch64_info_to_howto | |
a06ea964 NC |
426 | |
427 | #define AARCH64_ELF_ABI_VERSION 0 | |
a06ea964 NC |
428 | |
429 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ | |
430 | #define ALL_ONES (~ (bfd_vma) 0) | |
431 | ||
a6bb11b2 YZ |
432 | /* Indexed by the bfd interal reloc enumerators. |
433 | Therefore, the table needs to be synced with BFD_RELOC_AARCH64_* | |
434 | in reloc.c. */ | |
a06ea964 | 435 | |
a6bb11b2 | 436 | static reloc_howto_type elfNN_aarch64_howto_table[] = |
a06ea964 | 437 | { |
a6bb11b2 | 438 | EMPTY_HOWTO (0), |
a06ea964 | 439 | |
a6bb11b2 | 440 | /* Basic data relocations. */ |
a06ea964 | 441 | |
b7f28d87 JW |
442 | /* Deprecated, but retained for backwards compatibility. */ |
443 | HOWTO64 (R_AARCH64_NULL, /* type */ | |
a06ea964 | 444 | 0, /* rightshift */ |
c94cb026 | 445 | 0, /* size */ |
a6bb11b2 | 446 | 0, /* bitsize */ |
0a1b45a2 | 447 | false, /* pc_relative */ |
a06ea964 NC |
448 | 0, /* bitpos */ |
449 | complain_overflow_dont, /* complain_on_overflow */ | |
450 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 451 | "R_AARCH64_NULL", /* name */ |
0a1b45a2 | 452 | false, /* partial_inplace */ |
a06ea964 | 453 | 0, /* src_mask */ |
a6bb11b2 | 454 | 0, /* dst_mask */ |
0a1b45a2 | 455 | false), /* pcrel_offset */ |
a6bb11b2 | 456 | HOWTO (R_AARCH64_NONE, /* type */ |
a06ea964 | 457 | 0, /* rightshift */ |
c94cb026 | 458 | 0, /* size */ |
a06ea964 | 459 | 0, /* bitsize */ |
0a1b45a2 | 460 | false, /* pc_relative */ |
a06ea964 NC |
461 | 0, /* bitpos */ |
462 | complain_overflow_dont, /* complain_on_overflow */ | |
463 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 464 | "R_AARCH64_NONE", /* name */ |
0a1b45a2 | 465 | false, /* partial_inplace */ |
a06ea964 NC |
466 | 0, /* src_mask */ |
467 | 0, /* dst_mask */ | |
0a1b45a2 | 468 | false), /* pcrel_offset */ |
a06ea964 NC |
469 | |
470 | /* .xword: (S+A) */ | |
a6bb11b2 | 471 | HOWTO64 (AARCH64_R (ABS64), /* type */ |
a06ea964 | 472 | 0, /* rightshift */ |
c94cb026 | 473 | 8, /* size */ |
a06ea964 | 474 | 64, /* bitsize */ |
0a1b45a2 | 475 | false, /* pc_relative */ |
a06ea964 NC |
476 | 0, /* bitpos */ |
477 | complain_overflow_unsigned, /* complain_on_overflow */ | |
478 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 479 | AARCH64_R_STR (ABS64), /* name */ |
0a1b45a2 | 480 | false, /* partial_inplace */ |
a06ea964 NC |
481 | ALL_ONES, /* src_mask */ |
482 | ALL_ONES, /* dst_mask */ | |
0a1b45a2 | 483 | false), /* pcrel_offset */ |
a06ea964 NC |
484 | |
485 | /* .word: (S+A) */ | |
a6bb11b2 | 486 | HOWTO (AARCH64_R (ABS32), /* type */ |
a06ea964 | 487 | 0, /* rightshift */ |
c94cb026 | 488 | 4, /* size */ |
a06ea964 | 489 | 32, /* bitsize */ |
0a1b45a2 | 490 | false, /* pc_relative */ |
a06ea964 NC |
491 | 0, /* bitpos */ |
492 | complain_overflow_unsigned, /* complain_on_overflow */ | |
493 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 494 | AARCH64_R_STR (ABS32), /* name */ |
0a1b45a2 | 495 | false, /* partial_inplace */ |
a06ea964 NC |
496 | 0xffffffff, /* src_mask */ |
497 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 498 | false), /* pcrel_offset */ |
a06ea964 NC |
499 | |
500 | /* .half: (S+A) */ | |
a6bb11b2 | 501 | HOWTO (AARCH64_R (ABS16), /* type */ |
a06ea964 | 502 | 0, /* rightshift */ |
c94cb026 | 503 | 2, /* size */ |
a06ea964 | 504 | 16, /* bitsize */ |
0a1b45a2 | 505 | false, /* pc_relative */ |
a06ea964 NC |
506 | 0, /* bitpos */ |
507 | complain_overflow_unsigned, /* complain_on_overflow */ | |
508 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 509 | AARCH64_R_STR (ABS16), /* name */ |
0a1b45a2 | 510 | false, /* partial_inplace */ |
a06ea964 NC |
511 | 0xffff, /* src_mask */ |
512 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 513 | false), /* pcrel_offset */ |
a06ea964 NC |
514 | |
515 | /* .xword: (S+A-P) */ | |
a6bb11b2 | 516 | HOWTO64 (AARCH64_R (PREL64), /* type */ |
a06ea964 | 517 | 0, /* rightshift */ |
c94cb026 | 518 | 8, /* size */ |
a06ea964 | 519 | 64, /* bitsize */ |
0a1b45a2 | 520 | true, /* pc_relative */ |
a06ea964 NC |
521 | 0, /* bitpos */ |
522 | complain_overflow_signed, /* complain_on_overflow */ | |
523 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 524 | AARCH64_R_STR (PREL64), /* name */ |
0a1b45a2 | 525 | false, /* partial_inplace */ |
a06ea964 NC |
526 | ALL_ONES, /* src_mask */ |
527 | ALL_ONES, /* dst_mask */ | |
0a1b45a2 | 528 | true), /* pcrel_offset */ |
a06ea964 NC |
529 | |
530 | /* .word: (S+A-P) */ | |
a6bb11b2 | 531 | HOWTO (AARCH64_R (PREL32), /* type */ |
a06ea964 | 532 | 0, /* rightshift */ |
c94cb026 | 533 | 4, /* size */ |
a06ea964 | 534 | 32, /* bitsize */ |
0a1b45a2 | 535 | true, /* pc_relative */ |
a06ea964 NC |
536 | 0, /* bitpos */ |
537 | complain_overflow_signed, /* complain_on_overflow */ | |
538 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 539 | AARCH64_R_STR (PREL32), /* name */ |
0a1b45a2 | 540 | false, /* partial_inplace */ |
a06ea964 NC |
541 | 0xffffffff, /* src_mask */ |
542 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 543 | true), /* pcrel_offset */ |
a06ea964 NC |
544 | |
545 | /* .half: (S+A-P) */ | |
a6bb11b2 | 546 | HOWTO (AARCH64_R (PREL16), /* type */ |
a06ea964 | 547 | 0, /* rightshift */ |
c94cb026 | 548 | 2, /* size */ |
a06ea964 | 549 | 16, /* bitsize */ |
0a1b45a2 | 550 | true, /* pc_relative */ |
a06ea964 NC |
551 | 0, /* bitpos */ |
552 | complain_overflow_signed, /* complain_on_overflow */ | |
553 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 554 | AARCH64_R_STR (PREL16), /* name */ |
0a1b45a2 | 555 | false, /* partial_inplace */ |
a06ea964 NC |
556 | 0xffff, /* src_mask */ |
557 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 558 | true), /* pcrel_offset */ |
a06ea964 NC |
559 | |
560 | /* Group relocations to create a 16, 32, 48 or 64 bit | |
561 | unsigned data or abs address inline. */ | |
562 | ||
563 | /* MOVZ: ((S+A) >> 0) & 0xffff */ | |
a6bb11b2 | 564 | HOWTO (AARCH64_R (MOVW_UABS_G0), /* type */ |
a06ea964 | 565 | 0, /* rightshift */ |
c94cb026 | 566 | 4, /* size */ |
a06ea964 | 567 | 16, /* bitsize */ |
0a1b45a2 | 568 | false, /* pc_relative */ |
a06ea964 NC |
569 | 0, /* bitpos */ |
570 | complain_overflow_unsigned, /* complain_on_overflow */ | |
571 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 572 | AARCH64_R_STR (MOVW_UABS_G0), /* name */ |
0a1b45a2 | 573 | false, /* partial_inplace */ |
a06ea964 NC |
574 | 0xffff, /* src_mask */ |
575 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 576 | false), /* pcrel_offset */ |
a06ea964 NC |
577 | |
578 | /* MOVK: ((S+A) >> 0) & 0xffff [no overflow check] */ | |
a6bb11b2 | 579 | HOWTO (AARCH64_R (MOVW_UABS_G0_NC), /* type */ |
a06ea964 | 580 | 0, /* rightshift */ |
c94cb026 | 581 | 4, /* size */ |
a06ea964 | 582 | 16, /* bitsize */ |
0a1b45a2 | 583 | false, /* pc_relative */ |
a06ea964 NC |
584 | 0, /* bitpos */ |
585 | complain_overflow_dont, /* complain_on_overflow */ | |
586 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 587 | AARCH64_R_STR (MOVW_UABS_G0_NC), /* name */ |
0a1b45a2 | 588 | false, /* partial_inplace */ |
a06ea964 NC |
589 | 0xffff, /* src_mask */ |
590 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 591 | false), /* pcrel_offset */ |
a06ea964 NC |
592 | |
593 | /* MOVZ: ((S+A) >> 16) & 0xffff */ | |
a6bb11b2 | 594 | HOWTO (AARCH64_R (MOVW_UABS_G1), /* type */ |
a06ea964 | 595 | 16, /* rightshift */ |
c94cb026 | 596 | 4, /* size */ |
a06ea964 | 597 | 16, /* bitsize */ |
0a1b45a2 | 598 | false, /* pc_relative */ |
a06ea964 NC |
599 | 0, /* bitpos */ |
600 | complain_overflow_unsigned, /* complain_on_overflow */ | |
601 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 602 | AARCH64_R_STR (MOVW_UABS_G1), /* name */ |
0a1b45a2 | 603 | false, /* partial_inplace */ |
a06ea964 NC |
604 | 0xffff, /* src_mask */ |
605 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 606 | false), /* pcrel_offset */ |
a06ea964 NC |
607 | |
608 | /* MOVK: ((S+A) >> 16) & 0xffff [no overflow check] */ | |
a6bb11b2 | 609 | HOWTO64 (AARCH64_R (MOVW_UABS_G1_NC), /* type */ |
a06ea964 | 610 | 16, /* rightshift */ |
c94cb026 | 611 | 4, /* size */ |
a06ea964 | 612 | 16, /* bitsize */ |
0a1b45a2 | 613 | false, /* pc_relative */ |
a06ea964 NC |
614 | 0, /* bitpos */ |
615 | complain_overflow_dont, /* complain_on_overflow */ | |
616 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 617 | AARCH64_R_STR (MOVW_UABS_G1_NC), /* name */ |
0a1b45a2 | 618 | false, /* partial_inplace */ |
a06ea964 NC |
619 | 0xffff, /* src_mask */ |
620 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 621 | false), /* pcrel_offset */ |
a06ea964 NC |
622 | |
623 | /* MOVZ: ((S+A) >> 32) & 0xffff */ | |
a6bb11b2 | 624 | HOWTO64 (AARCH64_R (MOVW_UABS_G2), /* type */ |
a06ea964 | 625 | 32, /* rightshift */ |
c94cb026 | 626 | 4, /* size */ |
a06ea964 | 627 | 16, /* bitsize */ |
0a1b45a2 | 628 | false, /* pc_relative */ |
a06ea964 NC |
629 | 0, /* bitpos */ |
630 | complain_overflow_unsigned, /* complain_on_overflow */ | |
631 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 632 | AARCH64_R_STR (MOVW_UABS_G2), /* name */ |
0a1b45a2 | 633 | false, /* partial_inplace */ |
a06ea964 NC |
634 | 0xffff, /* src_mask */ |
635 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 636 | false), /* pcrel_offset */ |
a06ea964 NC |
637 | |
638 | /* MOVK: ((S+A) >> 32) & 0xffff [no overflow check] */ | |
a6bb11b2 | 639 | HOWTO64 (AARCH64_R (MOVW_UABS_G2_NC), /* type */ |
a06ea964 | 640 | 32, /* rightshift */ |
c94cb026 | 641 | 4, /* size */ |
a06ea964 | 642 | 16, /* bitsize */ |
0a1b45a2 | 643 | false, /* pc_relative */ |
a06ea964 NC |
644 | 0, /* bitpos */ |
645 | complain_overflow_dont, /* complain_on_overflow */ | |
646 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 647 | AARCH64_R_STR (MOVW_UABS_G2_NC), /* name */ |
0a1b45a2 | 648 | false, /* partial_inplace */ |
a06ea964 NC |
649 | 0xffff, /* src_mask */ |
650 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 651 | false), /* pcrel_offset */ |
a06ea964 NC |
652 | |
653 | /* MOVZ: ((S+A) >> 48) & 0xffff */ | |
a6bb11b2 | 654 | HOWTO64 (AARCH64_R (MOVW_UABS_G3), /* type */ |
a06ea964 | 655 | 48, /* rightshift */ |
c94cb026 | 656 | 4, /* size */ |
a06ea964 | 657 | 16, /* bitsize */ |
0a1b45a2 | 658 | false, /* pc_relative */ |
a06ea964 NC |
659 | 0, /* bitpos */ |
660 | complain_overflow_unsigned, /* complain_on_overflow */ | |
661 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 662 | AARCH64_R_STR (MOVW_UABS_G3), /* name */ |
0a1b45a2 | 663 | false, /* partial_inplace */ |
a06ea964 NC |
664 | 0xffff, /* src_mask */ |
665 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 666 | false), /* pcrel_offset */ |
a06ea964 NC |
667 | |
668 | /* Group relocations to create high part of a 16, 32, 48 or 64 bit | |
669 | signed data or abs address inline. Will change instruction | |
670 | to MOVN or MOVZ depending on sign of calculated value. */ | |
671 | ||
672 | /* MOV[ZN]: ((S+A) >> 0) & 0xffff */ | |
a6bb11b2 | 673 | HOWTO (AARCH64_R (MOVW_SABS_G0), /* type */ |
a06ea964 | 674 | 0, /* rightshift */ |
c94cb026 | 675 | 4, /* size */ |
c5e3a364 | 676 | 17, /* bitsize */ |
0a1b45a2 | 677 | false, /* pc_relative */ |
a06ea964 NC |
678 | 0, /* bitpos */ |
679 | complain_overflow_signed, /* complain_on_overflow */ | |
680 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 681 | AARCH64_R_STR (MOVW_SABS_G0), /* name */ |
0a1b45a2 | 682 | false, /* partial_inplace */ |
a06ea964 NC |
683 | 0xffff, /* src_mask */ |
684 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 685 | false), /* pcrel_offset */ |
a06ea964 NC |
686 | |
687 | /* MOV[ZN]: ((S+A) >> 16) & 0xffff */ | |
a6bb11b2 | 688 | HOWTO64 (AARCH64_R (MOVW_SABS_G1), /* type */ |
a06ea964 | 689 | 16, /* rightshift */ |
c94cb026 | 690 | 4, /* size */ |
c5e3a364 | 691 | 17, /* bitsize */ |
0a1b45a2 | 692 | false, /* pc_relative */ |
a06ea964 NC |
693 | 0, /* bitpos */ |
694 | complain_overflow_signed, /* complain_on_overflow */ | |
695 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 696 | AARCH64_R_STR (MOVW_SABS_G1), /* name */ |
0a1b45a2 | 697 | false, /* partial_inplace */ |
a06ea964 NC |
698 | 0xffff, /* src_mask */ |
699 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 700 | false), /* pcrel_offset */ |
a06ea964 NC |
701 | |
702 | /* MOV[ZN]: ((S+A) >> 32) & 0xffff */ | |
a6bb11b2 | 703 | HOWTO64 (AARCH64_R (MOVW_SABS_G2), /* type */ |
a06ea964 | 704 | 32, /* rightshift */ |
c94cb026 | 705 | 4, /* size */ |
c5e3a364 | 706 | 17, /* bitsize */ |
0a1b45a2 | 707 | false, /* pc_relative */ |
a06ea964 NC |
708 | 0, /* bitpos */ |
709 | complain_overflow_signed, /* complain_on_overflow */ | |
710 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 711 | AARCH64_R_STR (MOVW_SABS_G2), /* name */ |
0a1b45a2 | 712 | false, /* partial_inplace */ |
a06ea964 NC |
713 | 0xffff, /* src_mask */ |
714 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 715 | false), /* pcrel_offset */ |
a06ea964 | 716 | |
32247401 RL |
717 | /* Group relocations to create a 16, 32, 48 or 64 bit |
718 | PC relative address inline. */ | |
719 | ||
720 | /* MOV[NZ]: ((S+A-P) >> 0) & 0xffff */ | |
e30d1fa1 | 721 | HOWTO (AARCH64_R (MOVW_PREL_G0), /* type */ |
32247401 | 722 | 0, /* rightshift */ |
c94cb026 | 723 | 4, /* size */ |
32247401 | 724 | 17, /* bitsize */ |
0a1b45a2 | 725 | true, /* pc_relative */ |
32247401 RL |
726 | 0, /* bitpos */ |
727 | complain_overflow_signed, /* complain_on_overflow */ | |
728 | bfd_elf_generic_reloc, /* special_function */ | |
729 | AARCH64_R_STR (MOVW_PREL_G0), /* name */ | |
0a1b45a2 | 730 | false, /* partial_inplace */ |
32247401 RL |
731 | 0xffff, /* src_mask */ |
732 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 733 | true), /* pcrel_offset */ |
32247401 RL |
734 | |
735 | /* MOVK: ((S+A-P) >> 0) & 0xffff [no overflow check] */ | |
e30d1fa1 | 736 | HOWTO (AARCH64_R (MOVW_PREL_G0_NC), /* type */ |
32247401 | 737 | 0, /* rightshift */ |
c94cb026 | 738 | 4, /* size */ |
32247401 | 739 | 16, /* bitsize */ |
0a1b45a2 | 740 | true, /* pc_relative */ |
32247401 RL |
741 | 0, /* bitpos */ |
742 | complain_overflow_dont, /* complain_on_overflow */ | |
743 | bfd_elf_generic_reloc, /* special_function */ | |
744 | AARCH64_R_STR (MOVW_PREL_G0_NC), /* name */ | |
0a1b45a2 | 745 | false, /* partial_inplace */ |
32247401 RL |
746 | 0xffff, /* src_mask */ |
747 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 748 | true), /* pcrel_offset */ |
32247401 RL |
749 | |
750 | /* MOV[NZ]: ((S+A-P) >> 16) & 0xffff */ | |
e30d1fa1 | 751 | HOWTO (AARCH64_R (MOVW_PREL_G1), /* type */ |
32247401 | 752 | 16, /* rightshift */ |
c94cb026 | 753 | 4, /* size */ |
32247401 | 754 | 17, /* bitsize */ |
0a1b45a2 | 755 | true, /* pc_relative */ |
32247401 RL |
756 | 0, /* bitpos */ |
757 | complain_overflow_signed, /* complain_on_overflow */ | |
758 | bfd_elf_generic_reloc, /* special_function */ | |
759 | AARCH64_R_STR (MOVW_PREL_G1), /* name */ | |
0a1b45a2 | 760 | false, /* partial_inplace */ |
32247401 RL |
761 | 0xffff, /* src_mask */ |
762 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 763 | true), /* pcrel_offset */ |
32247401 RL |
764 | |
765 | /* MOVK: ((S+A-P) >> 16) & 0xffff [no overflow check] */ | |
766 | HOWTO64 (AARCH64_R (MOVW_PREL_G1_NC), /* type */ | |
767 | 16, /* rightshift */ | |
c94cb026 | 768 | 4, /* size */ |
32247401 | 769 | 16, /* bitsize */ |
0a1b45a2 | 770 | true, /* pc_relative */ |
32247401 RL |
771 | 0, /* bitpos */ |
772 | complain_overflow_dont, /* complain_on_overflow */ | |
773 | bfd_elf_generic_reloc, /* special_function */ | |
774 | AARCH64_R_STR (MOVW_PREL_G1_NC), /* name */ | |
0a1b45a2 | 775 | false, /* partial_inplace */ |
32247401 RL |
776 | 0xffff, /* src_mask */ |
777 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 778 | true), /* pcrel_offset */ |
32247401 RL |
779 | |
780 | /* MOV[NZ]: ((S+A-P) >> 32) & 0xffff */ | |
781 | HOWTO64 (AARCH64_R (MOVW_PREL_G2), /* type */ | |
782 | 32, /* rightshift */ | |
c94cb026 | 783 | 4, /* size */ |
32247401 | 784 | 17, /* bitsize */ |
0a1b45a2 | 785 | true, /* pc_relative */ |
32247401 RL |
786 | 0, /* bitpos */ |
787 | complain_overflow_signed, /* complain_on_overflow */ | |
788 | bfd_elf_generic_reloc, /* special_function */ | |
789 | AARCH64_R_STR (MOVW_PREL_G2), /* name */ | |
0a1b45a2 | 790 | false, /* partial_inplace */ |
32247401 RL |
791 | 0xffff, /* src_mask */ |
792 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 793 | true), /* pcrel_offset */ |
32247401 RL |
794 | |
795 | /* MOVK: ((S+A-P) >> 32) & 0xffff [no overflow check] */ | |
796 | HOWTO64 (AARCH64_R (MOVW_PREL_G2_NC), /* type */ | |
797 | 32, /* rightshift */ | |
c94cb026 | 798 | 4, /* size */ |
32247401 | 799 | 16, /* bitsize */ |
0a1b45a2 | 800 | true, /* pc_relative */ |
32247401 RL |
801 | 0, /* bitpos */ |
802 | complain_overflow_dont, /* complain_on_overflow */ | |
803 | bfd_elf_generic_reloc, /* special_function */ | |
804 | AARCH64_R_STR (MOVW_PREL_G2_NC), /* name */ | |
0a1b45a2 | 805 | false, /* partial_inplace */ |
32247401 RL |
806 | 0xffff, /* src_mask */ |
807 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 808 | true), /* pcrel_offset */ |
32247401 RL |
809 | |
810 | /* MOV[NZ]: ((S+A-P) >> 48) & 0xffff */ | |
811 | HOWTO64 (AARCH64_R (MOVW_PREL_G3), /* type */ | |
812 | 48, /* rightshift */ | |
c94cb026 | 813 | 4, /* size */ |
32247401 | 814 | 16, /* bitsize */ |
0a1b45a2 | 815 | true, /* pc_relative */ |
32247401 RL |
816 | 0, /* bitpos */ |
817 | complain_overflow_dont, /* complain_on_overflow */ | |
818 | bfd_elf_generic_reloc, /* special_function */ | |
819 | AARCH64_R_STR (MOVW_PREL_G3), /* name */ | |
0a1b45a2 | 820 | false, /* partial_inplace */ |
32247401 RL |
821 | 0xffff, /* src_mask */ |
822 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 823 | true), /* pcrel_offset */ |
32247401 | 824 | |
a06ea964 NC |
825 | /* Relocations to generate 19, 21 and 33 bit PC-relative load/store |
826 | addresses: PG(x) is (x & ~0xfff). */ | |
827 | ||
828 | /* LD-lit: ((S+A-P) >> 2) & 0x7ffff */ | |
a6bb11b2 | 829 | HOWTO (AARCH64_R (LD_PREL_LO19), /* type */ |
a06ea964 | 830 | 2, /* rightshift */ |
c94cb026 | 831 | 4, /* size */ |
a06ea964 | 832 | 19, /* bitsize */ |
0a1b45a2 | 833 | true, /* pc_relative */ |
a06ea964 NC |
834 | 0, /* bitpos */ |
835 | complain_overflow_signed, /* complain_on_overflow */ | |
836 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 837 | AARCH64_R_STR (LD_PREL_LO19), /* name */ |
0a1b45a2 | 838 | false, /* partial_inplace */ |
a06ea964 NC |
839 | 0x7ffff, /* src_mask */ |
840 | 0x7ffff, /* dst_mask */ | |
0a1b45a2 | 841 | true), /* pcrel_offset */ |
a06ea964 NC |
842 | |
843 | /* ADR: (S+A-P) & 0x1fffff */ | |
a6bb11b2 | 844 | HOWTO (AARCH64_R (ADR_PREL_LO21), /* type */ |
a06ea964 | 845 | 0, /* rightshift */ |
c94cb026 | 846 | 4, /* size */ |
a06ea964 | 847 | 21, /* bitsize */ |
0a1b45a2 | 848 | true, /* pc_relative */ |
a06ea964 NC |
849 | 0, /* bitpos */ |
850 | complain_overflow_signed, /* complain_on_overflow */ | |
851 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 852 | AARCH64_R_STR (ADR_PREL_LO21), /* name */ |
0a1b45a2 | 853 | false, /* partial_inplace */ |
a06ea964 NC |
854 | 0x1fffff, /* src_mask */ |
855 | 0x1fffff, /* dst_mask */ | |
0a1b45a2 | 856 | true), /* pcrel_offset */ |
a06ea964 NC |
857 | |
858 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
a6bb11b2 | 859 | HOWTO (AARCH64_R (ADR_PREL_PG_HI21), /* type */ |
a06ea964 | 860 | 12, /* rightshift */ |
c94cb026 | 861 | 4, /* size */ |
a06ea964 | 862 | 21, /* bitsize */ |
0a1b45a2 | 863 | true, /* pc_relative */ |
a06ea964 NC |
864 | 0, /* bitpos */ |
865 | complain_overflow_signed, /* complain_on_overflow */ | |
866 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 867 | AARCH64_R_STR (ADR_PREL_PG_HI21), /* name */ |
0a1b45a2 | 868 | false, /* partial_inplace */ |
a06ea964 NC |
869 | 0x1fffff, /* src_mask */ |
870 | 0x1fffff, /* dst_mask */ | |
0a1b45a2 | 871 | true), /* pcrel_offset */ |
a06ea964 NC |
872 | |
873 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff [no overflow check] */ | |
a6bb11b2 | 874 | HOWTO64 (AARCH64_R (ADR_PREL_PG_HI21_NC), /* type */ |
a06ea964 | 875 | 12, /* rightshift */ |
c94cb026 | 876 | 4, /* size */ |
a06ea964 | 877 | 21, /* bitsize */ |
0a1b45a2 | 878 | true, /* pc_relative */ |
a06ea964 NC |
879 | 0, /* bitpos */ |
880 | complain_overflow_dont, /* complain_on_overflow */ | |
881 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 882 | AARCH64_R_STR (ADR_PREL_PG_HI21_NC), /* name */ |
0a1b45a2 | 883 | false, /* partial_inplace */ |
a06ea964 NC |
884 | 0x1fffff, /* src_mask */ |
885 | 0x1fffff, /* dst_mask */ | |
0a1b45a2 | 886 | true), /* pcrel_offset */ |
a06ea964 NC |
887 | |
888 | /* ADD: (S+A) & 0xfff [no overflow check] */ | |
a6bb11b2 | 889 | HOWTO (AARCH64_R (ADD_ABS_LO12_NC), /* type */ |
a06ea964 | 890 | 0, /* rightshift */ |
c94cb026 | 891 | 4, /* size */ |
a06ea964 | 892 | 12, /* bitsize */ |
0a1b45a2 | 893 | false, /* pc_relative */ |
a06ea964 NC |
894 | 10, /* bitpos */ |
895 | complain_overflow_dont, /* complain_on_overflow */ | |
896 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 897 | AARCH64_R_STR (ADD_ABS_LO12_NC), /* name */ |
0a1b45a2 | 898 | false, /* partial_inplace */ |
a06ea964 NC |
899 | 0x3ffc00, /* src_mask */ |
900 | 0x3ffc00, /* dst_mask */ | |
0a1b45a2 | 901 | false), /* pcrel_offset */ |
a06ea964 NC |
902 | |
903 | /* LD/ST8: (S+A) & 0xfff */ | |
a6bb11b2 | 904 | HOWTO (AARCH64_R (LDST8_ABS_LO12_NC), /* type */ |
a06ea964 | 905 | 0, /* rightshift */ |
c94cb026 | 906 | 4, /* size */ |
a06ea964 | 907 | 12, /* bitsize */ |
0a1b45a2 | 908 | false, /* pc_relative */ |
a06ea964 NC |
909 | 0, /* bitpos */ |
910 | complain_overflow_dont, /* complain_on_overflow */ | |
911 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 912 | AARCH64_R_STR (LDST8_ABS_LO12_NC), /* name */ |
0a1b45a2 | 913 | false, /* partial_inplace */ |
a06ea964 NC |
914 | 0xfff, /* src_mask */ |
915 | 0xfff, /* dst_mask */ | |
0a1b45a2 | 916 | false), /* pcrel_offset */ |
a06ea964 NC |
917 | |
918 | /* Relocations for control-flow instructions. */ | |
919 | ||
920 | /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */ | |
a6bb11b2 | 921 | HOWTO (AARCH64_R (TSTBR14), /* type */ |
a06ea964 | 922 | 2, /* rightshift */ |
c94cb026 | 923 | 4, /* size */ |
a06ea964 | 924 | 14, /* bitsize */ |
0a1b45a2 | 925 | true, /* pc_relative */ |
a06ea964 NC |
926 | 0, /* bitpos */ |
927 | complain_overflow_signed, /* complain_on_overflow */ | |
928 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 929 | AARCH64_R_STR (TSTBR14), /* name */ |
0a1b45a2 | 930 | false, /* partial_inplace */ |
a06ea964 NC |
931 | 0x3fff, /* src_mask */ |
932 | 0x3fff, /* dst_mask */ | |
0a1b45a2 | 933 | true), /* pcrel_offset */ |
a06ea964 NC |
934 | |
935 | /* B.cond: ((S+A-P) >> 2) & 0x7ffff */ | |
a6bb11b2 | 936 | HOWTO (AARCH64_R (CONDBR19), /* type */ |
a06ea964 | 937 | 2, /* rightshift */ |
c94cb026 | 938 | 4, /* size */ |
a06ea964 | 939 | 19, /* bitsize */ |
0a1b45a2 | 940 | true, /* pc_relative */ |
a06ea964 NC |
941 | 0, /* bitpos */ |
942 | complain_overflow_signed, /* complain_on_overflow */ | |
943 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 944 | AARCH64_R_STR (CONDBR19), /* name */ |
0a1b45a2 | 945 | false, /* partial_inplace */ |
a06ea964 NC |
946 | 0x7ffff, /* src_mask */ |
947 | 0x7ffff, /* dst_mask */ | |
0a1b45a2 | 948 | true), /* pcrel_offset */ |
a06ea964 | 949 | |
a06ea964 | 950 | /* B: ((S+A-P) >> 2) & 0x3ffffff */ |
a6bb11b2 | 951 | HOWTO (AARCH64_R (JUMP26), /* type */ |
a06ea964 | 952 | 2, /* rightshift */ |
c94cb026 | 953 | 4, /* size */ |
a06ea964 | 954 | 26, /* bitsize */ |
0a1b45a2 | 955 | true, /* pc_relative */ |
a06ea964 NC |
956 | 0, /* bitpos */ |
957 | complain_overflow_signed, /* complain_on_overflow */ | |
958 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 959 | AARCH64_R_STR (JUMP26), /* name */ |
0a1b45a2 | 960 | false, /* partial_inplace */ |
a06ea964 NC |
961 | 0x3ffffff, /* src_mask */ |
962 | 0x3ffffff, /* dst_mask */ | |
0a1b45a2 | 963 | true), /* pcrel_offset */ |
a06ea964 NC |
964 | |
965 | /* BL: ((S+A-P) >> 2) & 0x3ffffff */ | |
a6bb11b2 | 966 | HOWTO (AARCH64_R (CALL26), /* type */ |
a06ea964 | 967 | 2, /* rightshift */ |
c94cb026 | 968 | 4, /* size */ |
a06ea964 | 969 | 26, /* bitsize */ |
0a1b45a2 | 970 | true, /* pc_relative */ |
a06ea964 NC |
971 | 0, /* bitpos */ |
972 | complain_overflow_signed, /* complain_on_overflow */ | |
973 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 974 | AARCH64_R_STR (CALL26), /* name */ |
0a1b45a2 | 975 | false, /* partial_inplace */ |
a06ea964 NC |
976 | 0x3ffffff, /* src_mask */ |
977 | 0x3ffffff, /* dst_mask */ | |
0a1b45a2 | 978 | true), /* pcrel_offset */ |
a06ea964 NC |
979 | |
980 | /* LD/ST16: (S+A) & 0xffe */ | |
a6bb11b2 | 981 | HOWTO (AARCH64_R (LDST16_ABS_LO12_NC), /* type */ |
a06ea964 | 982 | 1, /* rightshift */ |
c94cb026 | 983 | 4, /* size */ |
a06ea964 | 984 | 12, /* bitsize */ |
0a1b45a2 | 985 | false, /* pc_relative */ |
a06ea964 NC |
986 | 0, /* bitpos */ |
987 | complain_overflow_dont, /* complain_on_overflow */ | |
988 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 989 | AARCH64_R_STR (LDST16_ABS_LO12_NC), /* name */ |
0a1b45a2 | 990 | false, /* partial_inplace */ |
a06ea964 NC |
991 | 0xffe, /* src_mask */ |
992 | 0xffe, /* dst_mask */ | |
0a1b45a2 | 993 | false), /* pcrel_offset */ |
a06ea964 NC |
994 | |
995 | /* LD/ST32: (S+A) & 0xffc */ | |
a6bb11b2 | 996 | HOWTO (AARCH64_R (LDST32_ABS_LO12_NC), /* type */ |
a06ea964 | 997 | 2, /* rightshift */ |
c94cb026 | 998 | 4, /* size */ |
a06ea964 | 999 | 12, /* bitsize */ |
0a1b45a2 | 1000 | false, /* pc_relative */ |
a06ea964 NC |
1001 | 0, /* bitpos */ |
1002 | complain_overflow_dont, /* complain_on_overflow */ | |
1003 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1004 | AARCH64_R_STR (LDST32_ABS_LO12_NC), /* name */ |
0a1b45a2 | 1005 | false, /* partial_inplace */ |
a06ea964 NC |
1006 | 0xffc, /* src_mask */ |
1007 | 0xffc, /* dst_mask */ | |
0a1b45a2 | 1008 | false), /* pcrel_offset */ |
a06ea964 NC |
1009 | |
1010 | /* LD/ST64: (S+A) & 0xff8 */ | |
a6bb11b2 | 1011 | HOWTO (AARCH64_R (LDST64_ABS_LO12_NC), /* type */ |
a06ea964 | 1012 | 3, /* rightshift */ |
c94cb026 | 1013 | 4, /* size */ |
a06ea964 | 1014 | 12, /* bitsize */ |
0a1b45a2 | 1015 | false, /* pc_relative */ |
a06ea964 NC |
1016 | 0, /* bitpos */ |
1017 | complain_overflow_dont, /* complain_on_overflow */ | |
1018 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1019 | AARCH64_R_STR (LDST64_ABS_LO12_NC), /* name */ |
0a1b45a2 | 1020 | false, /* partial_inplace */ |
a06ea964 NC |
1021 | 0xff8, /* src_mask */ |
1022 | 0xff8, /* dst_mask */ | |
0a1b45a2 | 1023 | false), /* pcrel_offset */ |
a06ea964 | 1024 | |
a06ea964 | 1025 | /* LD/ST128: (S+A) & 0xff0 */ |
a6bb11b2 | 1026 | HOWTO (AARCH64_R (LDST128_ABS_LO12_NC), /* type */ |
a06ea964 | 1027 | 4, /* rightshift */ |
c94cb026 | 1028 | 4, /* size */ |
a06ea964 | 1029 | 12, /* bitsize */ |
0a1b45a2 | 1030 | false, /* pc_relative */ |
a06ea964 NC |
1031 | 0, /* bitpos */ |
1032 | complain_overflow_dont, /* complain_on_overflow */ | |
1033 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1034 | AARCH64_R_STR (LDST128_ABS_LO12_NC), /* name */ |
0a1b45a2 | 1035 | false, /* partial_inplace */ |
a06ea964 NC |
1036 | 0xff0, /* src_mask */ |
1037 | 0xff0, /* dst_mask */ | |
0a1b45a2 | 1038 | false), /* pcrel_offset */ |
a06ea964 | 1039 | |
f41aef5f RE |
1040 | /* Set a load-literal immediate field to bits |
1041 | 0x1FFFFC of G(S)-P */ | |
a6bb11b2 | 1042 | HOWTO (AARCH64_R (GOT_LD_PREL19), /* type */ |
f41aef5f | 1043 | 2, /* rightshift */ |
c94cb026 | 1044 | 4, /* size */ |
f41aef5f | 1045 | 19, /* bitsize */ |
0a1b45a2 | 1046 | true, /* pc_relative */ |
f41aef5f RE |
1047 | 0, /* bitpos */ |
1048 | complain_overflow_signed, /* complain_on_overflow */ | |
1049 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1050 | AARCH64_R_STR (GOT_LD_PREL19), /* name */ |
0a1b45a2 | 1051 | false, /* partial_inplace */ |
f41aef5f RE |
1052 | 0xffffe0, /* src_mask */ |
1053 | 0xffffe0, /* dst_mask */ | |
0a1b45a2 | 1054 | true), /* pcrel_offset */ |
f41aef5f | 1055 | |
a06ea964 NC |
1056 | /* Get to the page for the GOT entry for the symbol |
1057 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 1058 | HOWTO (AARCH64_R (ADR_GOT_PAGE), /* type */ |
a06ea964 | 1059 | 12, /* rightshift */ |
c94cb026 | 1060 | 4, /* size */ |
a06ea964 | 1061 | 21, /* bitsize */ |
0a1b45a2 | 1062 | true, /* pc_relative */ |
a06ea964 NC |
1063 | 0, /* bitpos */ |
1064 | complain_overflow_dont, /* complain_on_overflow */ | |
1065 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1066 | AARCH64_R_STR (ADR_GOT_PAGE), /* name */ |
0a1b45a2 | 1067 | false, /* partial_inplace */ |
a06ea964 NC |
1068 | 0x1fffff, /* src_mask */ |
1069 | 0x1fffff, /* dst_mask */ | |
0a1b45a2 | 1070 | true), /* pcrel_offset */ |
a06ea964 | 1071 | |
a6bb11b2 YZ |
1072 | /* LD64: GOT offset G(S) & 0xff8 */ |
1073 | HOWTO64 (AARCH64_R (LD64_GOT_LO12_NC), /* type */ | |
a06ea964 | 1074 | 3, /* rightshift */ |
c94cb026 | 1075 | 4, /* size */ |
a06ea964 | 1076 | 12, /* bitsize */ |
0a1b45a2 | 1077 | false, /* pc_relative */ |
a06ea964 NC |
1078 | 0, /* bitpos */ |
1079 | complain_overflow_dont, /* complain_on_overflow */ | |
1080 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1081 | AARCH64_R_STR (LD64_GOT_LO12_NC), /* name */ |
0a1b45a2 | 1082 | false, /* partial_inplace */ |
a06ea964 NC |
1083 | 0xff8, /* src_mask */ |
1084 | 0xff8, /* dst_mask */ | |
0a1b45a2 | 1085 | false), /* pcrel_offset */ |
a06ea964 | 1086 | |
a6bb11b2 YZ |
1087 | /* LD32: GOT offset G(S) & 0xffc */ |
1088 | HOWTO32 (AARCH64_R (LD32_GOT_LO12_NC), /* type */ | |
1089 | 2, /* rightshift */ | |
c94cb026 | 1090 | 4, /* size */ |
a6bb11b2 | 1091 | 12, /* bitsize */ |
0a1b45a2 | 1092 | false, /* pc_relative */ |
a6bb11b2 YZ |
1093 | 0, /* bitpos */ |
1094 | complain_overflow_dont, /* complain_on_overflow */ | |
1095 | bfd_elf_generic_reloc, /* special_function */ | |
1096 | AARCH64_R_STR (LD32_GOT_LO12_NC), /* name */ | |
0a1b45a2 | 1097 | false, /* partial_inplace */ |
a6bb11b2 YZ |
1098 | 0xffc, /* src_mask */ |
1099 | 0xffc, /* dst_mask */ | |
0a1b45a2 | 1100 | false), /* pcrel_offset */ |
a06ea964 | 1101 | |
ca632371 RL |
1102 | /* Lower 16 bits of GOT offset for the symbol. */ |
1103 | HOWTO64 (AARCH64_R (MOVW_GOTOFF_G0_NC), /* type */ | |
1104 | 0, /* rightshift */ | |
c94cb026 | 1105 | 4, /* size */ |
ca632371 | 1106 | 16, /* bitsize */ |
0a1b45a2 | 1107 | false, /* pc_relative */ |
ca632371 RL |
1108 | 0, /* bitpos */ |
1109 | complain_overflow_dont, /* complain_on_overflow */ | |
1110 | bfd_elf_generic_reloc, /* special_function */ | |
1111 | AARCH64_R_STR (MOVW_GOTOFF_G0_NC), /* name */ | |
0a1b45a2 | 1112 | false, /* partial_inplace */ |
ca632371 RL |
1113 | 0xffff, /* src_mask */ |
1114 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 1115 | false), /* pcrel_offset */ |
ca632371 | 1116 | |
654248e7 RL |
1117 | /* Higher 16 bits of GOT offset for the symbol. */ |
1118 | HOWTO64 (AARCH64_R (MOVW_GOTOFF_G1), /* type */ | |
1119 | 16, /* rightshift */ | |
c94cb026 | 1120 | 4, /* size */ |
654248e7 | 1121 | 16, /* bitsize */ |
0a1b45a2 | 1122 | false, /* pc_relative */ |
654248e7 RL |
1123 | 0, /* bitpos */ |
1124 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1125 | bfd_elf_generic_reloc, /* special_function */ | |
1126 | AARCH64_R_STR (MOVW_GOTOFF_G1), /* name */ | |
0a1b45a2 | 1127 | false, /* partial_inplace */ |
654248e7 RL |
1128 | 0xffff, /* src_mask */ |
1129 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 1130 | false), /* pcrel_offset */ |
654248e7 | 1131 | |
87f5fbcc RL |
1132 | /* LD64: GOT offset for the symbol. */ |
1133 | HOWTO64 (AARCH64_R (LD64_GOTOFF_LO15), /* type */ | |
1134 | 3, /* rightshift */ | |
c94cb026 | 1135 | 4, /* size */ |
87f5fbcc | 1136 | 12, /* bitsize */ |
0a1b45a2 | 1137 | false, /* pc_relative */ |
87f5fbcc RL |
1138 | 0, /* bitpos */ |
1139 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1140 | bfd_elf_generic_reloc, /* special_function */ | |
1141 | AARCH64_R_STR (LD64_GOTOFF_LO15), /* name */ | |
0a1b45a2 | 1142 | false, /* partial_inplace */ |
87f5fbcc RL |
1143 | 0x7ff8, /* src_mask */ |
1144 | 0x7ff8, /* dst_mask */ | |
0a1b45a2 | 1145 | false), /* pcrel_offset */ |
87f5fbcc | 1146 | |
3d715ce4 JW |
1147 | /* LD32: GOT offset to the page address of GOT table. |
1148 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x5ffc. */ | |
1149 | HOWTO32 (AARCH64_R (LD32_GOTPAGE_LO14), /* type */ | |
1150 | 2, /* rightshift */ | |
c94cb026 | 1151 | 4, /* size */ |
3d715ce4 | 1152 | 12, /* bitsize */ |
0a1b45a2 | 1153 | false, /* pc_relative */ |
3d715ce4 JW |
1154 | 0, /* bitpos */ |
1155 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1156 | bfd_elf_generic_reloc, /* special_function */ | |
1157 | AARCH64_R_STR (LD32_GOTPAGE_LO14), /* name */ | |
0a1b45a2 | 1158 | false, /* partial_inplace */ |
3d715ce4 JW |
1159 | 0x5ffc, /* src_mask */ |
1160 | 0x5ffc, /* dst_mask */ | |
0a1b45a2 | 1161 | false), /* pcrel_offset */ |
3d715ce4 | 1162 | |
a921b5bd JW |
1163 | /* LD64: GOT offset to the page address of GOT table. |
1164 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */ | |
1165 | HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15), /* type */ | |
1166 | 3, /* rightshift */ | |
c94cb026 | 1167 | 4, /* size */ |
a921b5bd | 1168 | 12, /* bitsize */ |
0a1b45a2 | 1169 | false, /* pc_relative */ |
a921b5bd JW |
1170 | 0, /* bitpos */ |
1171 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1172 | bfd_elf_generic_reloc, /* special_function */ | |
1173 | AARCH64_R_STR (LD64_GOTPAGE_LO15), /* name */ | |
0a1b45a2 | 1174 | false, /* partial_inplace */ |
a921b5bd JW |
1175 | 0x7ff8, /* src_mask */ |
1176 | 0x7ff8, /* dst_mask */ | |
0a1b45a2 | 1177 | false), /* pcrel_offset */ |
a921b5bd | 1178 | |
a06ea964 NC |
1179 | /* Get to the page for the GOT entry for the symbol |
1180 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 1181 | HOWTO (AARCH64_R (TLSGD_ADR_PAGE21), /* type */ |
a06ea964 | 1182 | 12, /* rightshift */ |
c94cb026 | 1183 | 4, /* size */ |
a06ea964 | 1184 | 21, /* bitsize */ |
0a1b45a2 | 1185 | true, /* pc_relative */ |
a06ea964 NC |
1186 | 0, /* bitpos */ |
1187 | complain_overflow_dont, /* complain_on_overflow */ | |
1188 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1189 | AARCH64_R_STR (TLSGD_ADR_PAGE21), /* name */ |
0a1b45a2 | 1190 | false, /* partial_inplace */ |
a06ea964 NC |
1191 | 0x1fffff, /* src_mask */ |
1192 | 0x1fffff, /* dst_mask */ | |
0a1b45a2 | 1193 | true), /* pcrel_offset */ |
a06ea964 | 1194 | |
3c12b054 MS |
1195 | HOWTO (AARCH64_R (TLSGD_ADR_PREL21), /* type */ |
1196 | 0, /* rightshift */ | |
c94cb026 | 1197 | 4, /* size */ |
3c12b054 | 1198 | 21, /* bitsize */ |
0a1b45a2 | 1199 | true, /* pc_relative */ |
3c12b054 MS |
1200 | 0, /* bitpos */ |
1201 | complain_overflow_dont, /* complain_on_overflow */ | |
1202 | bfd_elf_generic_reloc, /* special_function */ | |
1203 | AARCH64_R_STR (TLSGD_ADR_PREL21), /* name */ | |
0a1b45a2 | 1204 | false, /* partial_inplace */ |
3c12b054 MS |
1205 | 0x1fffff, /* src_mask */ |
1206 | 0x1fffff, /* dst_mask */ | |
0a1b45a2 | 1207 | true), /* pcrel_offset */ |
3c12b054 | 1208 | |
a06ea964 | 1209 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ |
a6bb11b2 | 1210 | HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC), /* type */ |
a06ea964 | 1211 | 0, /* rightshift */ |
c94cb026 | 1212 | 4, /* size */ |
a06ea964 | 1213 | 12, /* bitsize */ |
0a1b45a2 | 1214 | false, /* pc_relative */ |
a06ea964 NC |
1215 | 0, /* bitpos */ |
1216 | complain_overflow_dont, /* complain_on_overflow */ | |
1217 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1218 | AARCH64_R_STR (TLSGD_ADD_LO12_NC), /* name */ |
0a1b45a2 | 1219 | false, /* partial_inplace */ |
a06ea964 NC |
1220 | 0xfff, /* src_mask */ |
1221 | 0xfff, /* dst_mask */ | |
0a1b45a2 | 1222 | false), /* pcrel_offset */ |
a06ea964 | 1223 | |
3e8286c0 RL |
1224 | /* Lower 16 bits of GOT offset to tls_index. */ |
1225 | HOWTO64 (AARCH64_R (TLSGD_MOVW_G0_NC), /* type */ | |
1226 | 0, /* rightshift */ | |
c94cb026 | 1227 | 4, /* size */ |
3e8286c0 | 1228 | 16, /* bitsize */ |
0a1b45a2 | 1229 | false, /* pc_relative */ |
3e8286c0 RL |
1230 | 0, /* bitpos */ |
1231 | complain_overflow_dont, /* complain_on_overflow */ | |
1232 | bfd_elf_generic_reloc, /* special_function */ | |
1233 | AARCH64_R_STR (TLSGD_MOVW_G0_NC), /* name */ | |
0a1b45a2 | 1234 | false, /* partial_inplace */ |
3e8286c0 RL |
1235 | 0xffff, /* src_mask */ |
1236 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 1237 | false), /* pcrel_offset */ |
3e8286c0 | 1238 | |
1aa66fb1 RL |
1239 | /* Higher 16 bits of GOT offset to tls_index. */ |
1240 | HOWTO64 (AARCH64_R (TLSGD_MOVW_G1), /* type */ | |
1241 | 16, /* rightshift */ | |
c94cb026 | 1242 | 4, /* size */ |
1aa66fb1 | 1243 | 16, /* bitsize */ |
0a1b45a2 | 1244 | false, /* pc_relative */ |
1aa66fb1 RL |
1245 | 0, /* bitpos */ |
1246 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1247 | bfd_elf_generic_reloc, /* special_function */ | |
1248 | AARCH64_R_STR (TLSGD_MOVW_G1), /* name */ | |
0a1b45a2 | 1249 | false, /* partial_inplace */ |
1aa66fb1 RL |
1250 | 0xffff, /* src_mask */ |
1251 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 1252 | false), /* pcrel_offset */ |
1aa66fb1 | 1253 | |
a6bb11b2 | 1254 | HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21), /* type */ |
a06ea964 | 1255 | 12, /* rightshift */ |
c94cb026 | 1256 | 4, /* size */ |
a06ea964 | 1257 | 21, /* bitsize */ |
0a1b45a2 | 1258 | false, /* pc_relative */ |
a06ea964 NC |
1259 | 0, /* bitpos */ |
1260 | complain_overflow_dont, /* complain_on_overflow */ | |
1261 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1262 | AARCH64_R_STR (TLSIE_ADR_GOTTPREL_PAGE21), /* name */ |
0a1b45a2 | 1263 | false, /* partial_inplace */ |
a06ea964 NC |
1264 | 0x1fffff, /* src_mask */ |
1265 | 0x1fffff, /* dst_mask */ | |
0a1b45a2 | 1266 | false), /* pcrel_offset */ |
a06ea964 | 1267 | |
a6bb11b2 | 1268 | HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC), /* type */ |
a06ea964 | 1269 | 3, /* rightshift */ |
c94cb026 | 1270 | 4, /* size */ |
a06ea964 | 1271 | 12, /* bitsize */ |
0a1b45a2 | 1272 | false, /* pc_relative */ |
a06ea964 NC |
1273 | 0, /* bitpos */ |
1274 | complain_overflow_dont, /* complain_on_overflow */ | |
1275 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1276 | AARCH64_R_STR (TLSIE_LD64_GOTTPREL_LO12_NC), /* name */ |
0a1b45a2 | 1277 | false, /* partial_inplace */ |
a06ea964 NC |
1278 | 0xff8, /* src_mask */ |
1279 | 0xff8, /* dst_mask */ | |
0a1b45a2 | 1280 | false), /* pcrel_offset */ |
a06ea964 | 1281 | |
a6bb11b2 YZ |
1282 | HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC), /* type */ |
1283 | 2, /* rightshift */ | |
c94cb026 | 1284 | 4, /* size */ |
a6bb11b2 | 1285 | 12, /* bitsize */ |
0a1b45a2 | 1286 | false, /* pc_relative */ |
a6bb11b2 YZ |
1287 | 0, /* bitpos */ |
1288 | complain_overflow_dont, /* complain_on_overflow */ | |
1289 | bfd_elf_generic_reloc, /* special_function */ | |
1290 | AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC), /* name */ | |
0a1b45a2 | 1291 | false, /* partial_inplace */ |
a6bb11b2 YZ |
1292 | 0xffc, /* src_mask */ |
1293 | 0xffc, /* dst_mask */ | |
0a1b45a2 | 1294 | false), /* pcrel_offset */ |
a6bb11b2 YZ |
1295 | |
1296 | HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19), /* type */ | |
bb3f9ed8 | 1297 | 2, /* rightshift */ |
c94cb026 | 1298 | 4, /* size */ |
043bf05a | 1299 | 19, /* bitsize */ |
0a1b45a2 | 1300 | false, /* pc_relative */ |
a06ea964 NC |
1301 | 0, /* bitpos */ |
1302 | complain_overflow_dont, /* complain_on_overflow */ | |
1303 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1304 | AARCH64_R_STR (TLSIE_LD_GOTTPREL_PREL19), /* name */ |
0a1b45a2 | 1305 | false, /* partial_inplace */ |
a06ea964 NC |
1306 | 0x1ffffc, /* src_mask */ |
1307 | 0x1ffffc, /* dst_mask */ | |
0a1b45a2 | 1308 | false), /* pcrel_offset */ |
a06ea964 | 1309 | |
3b957e5b RL |
1310 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */ |
1311 | 0, /* rightshift */ | |
c94cb026 | 1312 | 4, /* size */ |
3b957e5b | 1313 | 16, /* bitsize */ |
0a1b45a2 | 1314 | false, /* pc_relative */ |
3b957e5b RL |
1315 | 0, /* bitpos */ |
1316 | complain_overflow_dont, /* complain_on_overflow */ | |
1317 | bfd_elf_generic_reloc, /* special_function */ | |
1318 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC), /* name */ | |
0a1b45a2 | 1319 | false, /* partial_inplace */ |
3b957e5b RL |
1320 | 0xffff, /* src_mask */ |
1321 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 1322 | false), /* pcrel_offset */ |
3b957e5b RL |
1323 | |
1324 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1), /* type */ | |
1325 | 16, /* rightshift */ | |
c94cb026 | 1326 | 4, /* size */ |
3b957e5b | 1327 | 16, /* bitsize */ |
0a1b45a2 | 1328 | false, /* pc_relative */ |
3b957e5b RL |
1329 | 0, /* bitpos */ |
1330 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1331 | bfd_elf_generic_reloc, /* special_function */ | |
1332 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1), /* name */ | |
0a1b45a2 | 1333 | false, /* partial_inplace */ |
3b957e5b RL |
1334 | 0xffff, /* src_mask */ |
1335 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 1336 | false), /* pcrel_offset */ |
3b957e5b | 1337 | |
49df5539 JW |
1338 | /* ADD: bit[23:12] of byte offset to module TLS base address. */ |
1339 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_HI12), /* type */ | |
1340 | 12, /* rightshift */ | |
c94cb026 | 1341 | 4, /* size */ |
49df5539 | 1342 | 12, /* bitsize */ |
0a1b45a2 | 1343 | false, /* pc_relative */ |
49df5539 JW |
1344 | 0, /* bitpos */ |
1345 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1346 | bfd_elf_generic_reloc, /* special_function */ | |
1347 | AARCH64_R_STR (TLSLD_ADD_DTPREL_HI12), /* name */ | |
0a1b45a2 | 1348 | false, /* partial_inplace */ |
49df5539 JW |
1349 | 0xfff, /* src_mask */ |
1350 | 0xfff, /* dst_mask */ | |
0a1b45a2 | 1351 | false), /* pcrel_offset */ |
49df5539 | 1352 | |
70151fb5 JW |
1353 | /* Unsigned 12 bit byte offset to module TLS base address. */ |
1354 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12), /* type */ | |
1355 | 0, /* rightshift */ | |
c94cb026 | 1356 | 4, /* size */ |
70151fb5 | 1357 | 12, /* bitsize */ |
0a1b45a2 | 1358 | false, /* pc_relative */ |
70151fb5 JW |
1359 | 0, /* bitpos */ |
1360 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1361 | bfd_elf_generic_reloc, /* special_function */ | |
1362 | AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12), /* name */ | |
0a1b45a2 | 1363 | false, /* partial_inplace */ |
70151fb5 JW |
1364 | 0xfff, /* src_mask */ |
1365 | 0xfff, /* dst_mask */ | |
0a1b45a2 | 1366 | false), /* pcrel_offset */ |
13289c10 JW |
1367 | |
1368 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12. */ | |
1369 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12_NC), /* type */ | |
1370 | 0, /* rightshift */ | |
c94cb026 | 1371 | 4, /* size */ |
13289c10 | 1372 | 12, /* bitsize */ |
0a1b45a2 | 1373 | false, /* pc_relative */ |
13289c10 JW |
1374 | 0, /* bitpos */ |
1375 | complain_overflow_dont, /* complain_on_overflow */ | |
1376 | bfd_elf_generic_reloc, /* special_function */ | |
1377 | AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12_NC), /* name */ | |
0a1b45a2 | 1378 | false, /* partial_inplace */ |
13289c10 JW |
1379 | 0xfff, /* src_mask */ |
1380 | 0xfff, /* dst_mask */ | |
0a1b45a2 | 1381 | false), /* pcrel_offset */ |
70151fb5 | 1382 | |
a12fad50 JW |
1383 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ |
1384 | HOWTO (AARCH64_R (TLSLD_ADD_LO12_NC), /* type */ | |
1385 | 0, /* rightshift */ | |
c94cb026 | 1386 | 4, /* size */ |
a12fad50 | 1387 | 12, /* bitsize */ |
0a1b45a2 | 1388 | false, /* pc_relative */ |
a12fad50 JW |
1389 | 0, /* bitpos */ |
1390 | complain_overflow_dont, /* complain_on_overflow */ | |
1391 | bfd_elf_generic_reloc, /* special_function */ | |
1392 | AARCH64_R_STR (TLSLD_ADD_LO12_NC), /* name */ | |
0a1b45a2 | 1393 | false, /* partial_inplace */ |
a12fad50 JW |
1394 | 0xfff, /* src_mask */ |
1395 | 0xfff, /* dst_mask */ | |
0a1b45a2 | 1396 | false), /* pcrel_offset */ |
a12fad50 | 1397 | |
1107e076 JW |
1398 | /* Get to the page for the GOT entry for the symbol |
1399 | (G(S) - P) using an ADRP instruction. */ | |
1400 | HOWTO (AARCH64_R (TLSLD_ADR_PAGE21), /* type */ | |
1401 | 12, /* rightshift */ | |
c94cb026 | 1402 | 4, /* size */ |
1107e076 | 1403 | 21, /* bitsize */ |
0a1b45a2 | 1404 | true, /* pc_relative */ |
1107e076 JW |
1405 | 0, /* bitpos */ |
1406 | complain_overflow_signed, /* complain_on_overflow */ | |
1407 | bfd_elf_generic_reloc, /* special_function */ | |
1408 | AARCH64_R_STR (TLSLD_ADR_PAGE21), /* name */ | |
0a1b45a2 | 1409 | false, /* partial_inplace */ |
1107e076 JW |
1410 | 0x1fffff, /* src_mask */ |
1411 | 0x1fffff, /* dst_mask */ | |
0a1b45a2 | 1412 | true), /* pcrel_offset */ |
1107e076 | 1413 | |
6c37fedc JW |
1414 | HOWTO (AARCH64_R (TLSLD_ADR_PREL21), /* type */ |
1415 | 0, /* rightshift */ | |
c94cb026 | 1416 | 4, /* size */ |
6c37fedc | 1417 | 21, /* bitsize */ |
0a1b45a2 | 1418 | true, /* pc_relative */ |
6c37fedc JW |
1419 | 0, /* bitpos */ |
1420 | complain_overflow_signed, /* complain_on_overflow */ | |
1421 | bfd_elf_generic_reloc, /* special_function */ | |
1422 | AARCH64_R_STR (TLSLD_ADR_PREL21), /* name */ | |
0a1b45a2 | 1423 | false, /* partial_inplace */ |
6c37fedc JW |
1424 | 0x1fffff, /* src_mask */ |
1425 | 0x1fffff, /* dst_mask */ | |
0a1b45a2 | 1426 | true), /* pcrel_offset */ |
6c37fedc | 1427 | |
4c562523 JW |
1428 | /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */ |
1429 | HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12), /* type */ | |
1430 | 1, /* rightshift */ | |
c94cb026 | 1431 | 4, /* size */ |
4c562523 | 1432 | 11, /* bitsize */ |
0a1b45a2 | 1433 | false, /* pc_relative */ |
4c562523 JW |
1434 | 10, /* bitpos */ |
1435 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1436 | bfd_elf_generic_reloc, /* special_function */ | |
1437 | AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12), /* name */ | |
0a1b45a2 | 1438 | false, /* partial_inplace */ |
4c562523 JW |
1439 | 0x1ffc00, /* src_mask */ |
1440 | 0x1ffc00, /* dst_mask */ | |
0a1b45a2 | 1441 | false), /* pcrel_offset */ |
4c562523 JW |
1442 | |
1443 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12, but no overflow check. */ | |
1444 | HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12_NC), /* type */ | |
1445 | 1, /* rightshift */ | |
c94cb026 | 1446 | 4, /* size */ |
4c562523 | 1447 | 11, /* bitsize */ |
0a1b45a2 | 1448 | false, /* pc_relative */ |
4c562523 JW |
1449 | 10, /* bitpos */ |
1450 | complain_overflow_dont, /* complain_on_overflow */ | |
1451 | bfd_elf_generic_reloc, /* special_function */ | |
1452 | AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12_NC), /* name */ | |
0a1b45a2 | 1453 | false, /* partial_inplace */ |
4c562523 JW |
1454 | 0x1ffc00, /* src_mask */ |
1455 | 0x1ffc00, /* dst_mask */ | |
0a1b45a2 | 1456 | false), /* pcrel_offset */ |
4c562523 JW |
1457 | |
1458 | /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */ | |
1459 | HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12), /* type */ | |
1460 | 2, /* rightshift */ | |
c94cb026 | 1461 | 4, /* size */ |
4c562523 | 1462 | 10, /* bitsize */ |
0a1b45a2 | 1463 | false, /* pc_relative */ |
4c562523 JW |
1464 | 10, /* bitpos */ |
1465 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1466 | bfd_elf_generic_reloc, /* special_function */ | |
1467 | AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12), /* name */ | |
0a1b45a2 | 1468 | false, /* partial_inplace */ |
4c562523 JW |
1469 | 0x3ffc00, /* src_mask */ |
1470 | 0x3ffc00, /* dst_mask */ | |
0a1b45a2 | 1471 | false), /* pcrel_offset */ |
4c562523 JW |
1472 | |
1473 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12, but no overflow check. */ | |
1474 | HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12_NC), /* type */ | |
1475 | 2, /* rightshift */ | |
c94cb026 | 1476 | 4, /* size */ |
4c562523 | 1477 | 10, /* bitsize */ |
0a1b45a2 | 1478 | false, /* pc_relative */ |
4c562523 JW |
1479 | 10, /* bitpos */ |
1480 | complain_overflow_dont, /* complain_on_overflow */ | |
1481 | bfd_elf_generic_reloc, /* special_function */ | |
1482 | AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12_NC), /* name */ | |
0a1b45a2 | 1483 | false, /* partial_inplace */ |
4c562523 JW |
1484 | 0xffc00, /* src_mask */ |
1485 | 0xffc00, /* dst_mask */ | |
0a1b45a2 | 1486 | false), /* pcrel_offset */ |
4c562523 JW |
1487 | |
1488 | /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */ | |
1489 | HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12), /* type */ | |
1490 | 3, /* rightshift */ | |
c94cb026 | 1491 | 4, /* size */ |
4c562523 | 1492 | 9, /* bitsize */ |
0a1b45a2 | 1493 | false, /* pc_relative */ |
4c562523 JW |
1494 | 10, /* bitpos */ |
1495 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1496 | bfd_elf_generic_reloc, /* special_function */ | |
1497 | AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12), /* name */ | |
0a1b45a2 | 1498 | false, /* partial_inplace */ |
4c562523 JW |
1499 | 0x3ffc00, /* src_mask */ |
1500 | 0x3ffc00, /* dst_mask */ | |
0a1b45a2 | 1501 | false), /* pcrel_offset */ |
4c562523 JW |
1502 | |
1503 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12, but no overflow check. */ | |
1504 | HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12_NC), /* type */ | |
1505 | 3, /* rightshift */ | |
c94cb026 | 1506 | 4, /* size */ |
4c562523 | 1507 | 9, /* bitsize */ |
0a1b45a2 | 1508 | false, /* pc_relative */ |
4c562523 JW |
1509 | 10, /* bitpos */ |
1510 | complain_overflow_dont, /* complain_on_overflow */ | |
1511 | bfd_elf_generic_reloc, /* special_function */ | |
1512 | AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12_NC), /* name */ | |
0a1b45a2 | 1513 | false, /* partial_inplace */ |
4c562523 JW |
1514 | 0x7fc00, /* src_mask */ |
1515 | 0x7fc00, /* dst_mask */ | |
0a1b45a2 | 1516 | false), /* pcrel_offset */ |
4c562523 JW |
1517 | |
1518 | /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */ | |
1519 | HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12), /* type */ | |
1520 | 0, /* rightshift */ | |
c94cb026 | 1521 | 4, /* size */ |
4c562523 | 1522 | 12, /* bitsize */ |
0a1b45a2 | 1523 | false, /* pc_relative */ |
4c562523 JW |
1524 | 10, /* bitpos */ |
1525 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1526 | bfd_elf_generic_reloc, /* special_function */ | |
1527 | AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12), /* name */ | |
0a1b45a2 | 1528 | false, /* partial_inplace */ |
4c562523 JW |
1529 | 0x3ffc00, /* src_mask */ |
1530 | 0x3ffc00, /* dst_mask */ | |
0a1b45a2 | 1531 | false), /* pcrel_offset */ |
4c562523 JW |
1532 | |
1533 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12, but no overflow check. */ | |
1534 | HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12_NC), /* type */ | |
1535 | 0, /* rightshift */ | |
c94cb026 | 1536 | 4, /* size */ |
4c562523 | 1537 | 12, /* bitsize */ |
0a1b45a2 | 1538 | false, /* pc_relative */ |
4c562523 JW |
1539 | 10, /* bitpos */ |
1540 | complain_overflow_dont, /* complain_on_overflow */ | |
1541 | bfd_elf_generic_reloc, /* special_function */ | |
1542 | AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12_NC), /* name */ | |
0a1b45a2 | 1543 | false, /* partial_inplace */ |
4c562523 JW |
1544 | 0x3ffc00, /* src_mask */ |
1545 | 0x3ffc00, /* dst_mask */ | |
0a1b45a2 | 1546 | false), /* pcrel_offset */ |
4c562523 | 1547 | |
49df5539 JW |
1548 | /* MOVZ: bit[15:0] of byte offset to module TLS base address. */ |
1549 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0), /* type */ | |
1550 | 0, /* rightshift */ | |
c94cb026 | 1551 | 4, /* size */ |
49df5539 | 1552 | 16, /* bitsize */ |
0a1b45a2 | 1553 | false, /* pc_relative */ |
49df5539 JW |
1554 | 0, /* bitpos */ |
1555 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1556 | bfd_elf_generic_reloc, /* special_function */ | |
1557 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0), /* name */ | |
0a1b45a2 | 1558 | false, /* partial_inplace */ |
49df5539 JW |
1559 | 0xffff, /* src_mask */ |
1560 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 1561 | false), /* pcrel_offset */ |
49df5539 JW |
1562 | |
1563 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0. */ | |
1564 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0_NC), /* type */ | |
1565 | 0, /* rightshift */ | |
c94cb026 | 1566 | 4, /* size */ |
49df5539 | 1567 | 16, /* bitsize */ |
0a1b45a2 | 1568 | false, /* pc_relative */ |
49df5539 JW |
1569 | 0, /* bitpos */ |
1570 | complain_overflow_dont, /* complain_on_overflow */ | |
1571 | bfd_elf_generic_reloc, /* special_function */ | |
1572 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0_NC), /* name */ | |
0a1b45a2 | 1573 | false, /* partial_inplace */ |
49df5539 JW |
1574 | 0xffff, /* src_mask */ |
1575 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 1576 | false), /* pcrel_offset */ |
49df5539 JW |
1577 | |
1578 | /* MOVZ: bit[31:16] of byte offset to module TLS base address. */ | |
1579 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G1), /* type */ | |
1580 | 16, /* rightshift */ | |
c94cb026 | 1581 | 4, /* size */ |
49df5539 | 1582 | 16, /* bitsize */ |
0a1b45a2 | 1583 | false, /* pc_relative */ |
49df5539 JW |
1584 | 0, /* bitpos */ |
1585 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1586 | bfd_elf_generic_reloc, /* special_function */ | |
1587 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1), /* name */ | |
0a1b45a2 | 1588 | false, /* partial_inplace */ |
49df5539 JW |
1589 | 0xffff, /* src_mask */ |
1590 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 1591 | false), /* pcrel_offset */ |
49df5539 JW |
1592 | |
1593 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1. */ | |
1594 | HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G1_NC), /* type */ | |
1595 | 16, /* rightshift */ | |
c94cb026 | 1596 | 4, /* size */ |
49df5539 | 1597 | 16, /* bitsize */ |
0a1b45a2 | 1598 | false, /* pc_relative */ |
49df5539 JW |
1599 | 0, /* bitpos */ |
1600 | complain_overflow_dont, /* complain_on_overflow */ | |
1601 | bfd_elf_generic_reloc, /* special_function */ | |
1602 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1_NC), /* name */ | |
0a1b45a2 | 1603 | false, /* partial_inplace */ |
49df5539 JW |
1604 | 0xffff, /* src_mask */ |
1605 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 1606 | false), /* pcrel_offset */ |
49df5539 JW |
1607 | |
1608 | /* MOVZ: bit[47:32] of byte offset to module TLS base address. */ | |
1609 | HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G2), /* type */ | |
1610 | 32, /* rightshift */ | |
c94cb026 | 1611 | 4, /* size */ |
49df5539 | 1612 | 16, /* bitsize */ |
0a1b45a2 | 1613 | false, /* pc_relative */ |
49df5539 JW |
1614 | 0, /* bitpos */ |
1615 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1616 | bfd_elf_generic_reloc, /* special_function */ | |
1617 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G2), /* name */ | |
0a1b45a2 | 1618 | false, /* partial_inplace */ |
49df5539 JW |
1619 | 0xffff, /* src_mask */ |
1620 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 1621 | false), /* pcrel_offset */ |
49df5539 | 1622 | |
a6bb11b2 | 1623 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2), /* type */ |
bb3f9ed8 | 1624 | 32, /* rightshift */ |
c94cb026 | 1625 | 4, /* size */ |
07875fbc | 1626 | 16, /* bitsize */ |
0a1b45a2 | 1627 | false, /* pc_relative */ |
a06ea964 | 1628 | 0, /* bitpos */ |
0172429c | 1629 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1630 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1631 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G2), /* name */ |
0a1b45a2 | 1632 | false, /* partial_inplace */ |
a06ea964 NC |
1633 | 0xffff, /* src_mask */ |
1634 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 1635 | false), /* pcrel_offset */ |
a06ea964 | 1636 | |
a6bb11b2 | 1637 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1), /* type */ |
bb3f9ed8 | 1638 | 16, /* rightshift */ |
c94cb026 | 1639 | 4, /* size */ |
07875fbc | 1640 | 16, /* bitsize */ |
0a1b45a2 | 1641 | false, /* pc_relative */ |
a06ea964 NC |
1642 | 0, /* bitpos */ |
1643 | complain_overflow_dont, /* complain_on_overflow */ | |
1644 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1645 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1), /* name */ |
0a1b45a2 | 1646 | false, /* partial_inplace */ |
a06ea964 NC |
1647 | 0xffff, /* src_mask */ |
1648 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 1649 | false), /* pcrel_offset */ |
a06ea964 | 1650 | |
a6bb11b2 | 1651 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */ |
bb3f9ed8 | 1652 | 16, /* rightshift */ |
c94cb026 | 1653 | 4, /* size */ |
07875fbc | 1654 | 16, /* bitsize */ |
0a1b45a2 | 1655 | false, /* pc_relative */ |
a06ea964 NC |
1656 | 0, /* bitpos */ |
1657 | complain_overflow_dont, /* complain_on_overflow */ | |
1658 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1659 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC), /* name */ |
0a1b45a2 | 1660 | false, /* partial_inplace */ |
a06ea964 NC |
1661 | 0xffff, /* src_mask */ |
1662 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 1663 | false), /* pcrel_offset */ |
a06ea964 | 1664 | |
a6bb11b2 | 1665 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0), /* type */ |
a06ea964 | 1666 | 0, /* rightshift */ |
c94cb026 | 1667 | 4, /* size */ |
07875fbc | 1668 | 16, /* bitsize */ |
0a1b45a2 | 1669 | false, /* pc_relative */ |
a06ea964 NC |
1670 | 0, /* bitpos */ |
1671 | complain_overflow_dont, /* complain_on_overflow */ | |
1672 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1673 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0), /* name */ |
0a1b45a2 | 1674 | false, /* partial_inplace */ |
a06ea964 NC |
1675 | 0xffff, /* src_mask */ |
1676 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 1677 | false), /* pcrel_offset */ |
a06ea964 | 1678 | |
a6bb11b2 | 1679 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC), /* type */ |
a06ea964 | 1680 | 0, /* rightshift */ |
c94cb026 | 1681 | 4, /* size */ |
07875fbc | 1682 | 16, /* bitsize */ |
0a1b45a2 | 1683 | false, /* pc_relative */ |
a06ea964 NC |
1684 | 0, /* bitpos */ |
1685 | complain_overflow_dont, /* complain_on_overflow */ | |
1686 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1687 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC), /* name */ |
0a1b45a2 | 1688 | false, /* partial_inplace */ |
a06ea964 NC |
1689 | 0xffff, /* src_mask */ |
1690 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 1691 | false), /* pcrel_offset */ |
a06ea964 | 1692 | |
a6bb11b2 | 1693 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12), /* type */ |
bb3f9ed8 | 1694 | 12, /* rightshift */ |
c94cb026 | 1695 | 4, /* size */ |
a06ea964 | 1696 | 12, /* bitsize */ |
0a1b45a2 | 1697 | false, /* pc_relative */ |
a06ea964 | 1698 | 0, /* bitpos */ |
bab91cce | 1699 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1700 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1701 | AARCH64_R_STR (TLSLE_ADD_TPREL_HI12), /* name */ |
0a1b45a2 | 1702 | false, /* partial_inplace */ |
a06ea964 NC |
1703 | 0xfff, /* src_mask */ |
1704 | 0xfff, /* dst_mask */ | |
0a1b45a2 | 1705 | false), /* pcrel_offset */ |
a06ea964 | 1706 | |
a6bb11b2 | 1707 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12), /* type */ |
a06ea964 | 1708 | 0, /* rightshift */ |
c94cb026 | 1709 | 4, /* size */ |
a06ea964 | 1710 | 12, /* bitsize */ |
0a1b45a2 | 1711 | false, /* pc_relative */ |
a06ea964 | 1712 | 0, /* bitpos */ |
36e6c140 | 1713 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1714 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1715 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12), /* name */ |
0a1b45a2 | 1716 | false, /* partial_inplace */ |
a06ea964 NC |
1717 | 0xfff, /* src_mask */ |
1718 | 0xfff, /* dst_mask */ | |
0a1b45a2 | 1719 | false), /* pcrel_offset */ |
a06ea964 | 1720 | |
a6bb11b2 | 1721 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC), /* type */ |
a06ea964 | 1722 | 0, /* rightshift */ |
c94cb026 | 1723 | 4, /* size */ |
a06ea964 | 1724 | 12, /* bitsize */ |
0a1b45a2 | 1725 | false, /* pc_relative */ |
a06ea964 NC |
1726 | 0, /* bitpos */ |
1727 | complain_overflow_dont, /* complain_on_overflow */ | |
1728 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1729 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC), /* name */ |
0a1b45a2 | 1730 | false, /* partial_inplace */ |
a06ea964 NC |
1731 | 0xfff, /* src_mask */ |
1732 | 0xfff, /* dst_mask */ | |
0a1b45a2 | 1733 | false), /* pcrel_offset */ |
a06ea964 | 1734 | |
84f1b9fb RL |
1735 | /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */ |
1736 | HOWTO (AARCH64_R (TLSLE_LDST16_TPREL_LO12), /* type */ | |
1737 | 1, /* rightshift */ | |
c94cb026 | 1738 | 4, /* size */ |
84f1b9fb | 1739 | 11, /* bitsize */ |
0a1b45a2 | 1740 | false, /* pc_relative */ |
84f1b9fb RL |
1741 | 10, /* bitpos */ |
1742 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1743 | bfd_elf_generic_reloc, /* special_function */ | |
1744 | AARCH64_R_STR (TLSLE_LDST16_TPREL_LO12), /* name */ | |
0a1b45a2 | 1745 | false, /* partial_inplace */ |
84f1b9fb RL |
1746 | 0x1ffc00, /* src_mask */ |
1747 | 0x1ffc00, /* dst_mask */ | |
0a1b45a2 | 1748 | false), /* pcrel_offset */ |
84f1b9fb RL |
1749 | |
1750 | /* Same as BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12, but no overflow check. */ | |
1751 | HOWTO (AARCH64_R (TLSLE_LDST16_TPREL_LO12_NC), /* type */ | |
1752 | 1, /* rightshift */ | |
c94cb026 | 1753 | 4, /* size */ |
84f1b9fb | 1754 | 11, /* bitsize */ |
0a1b45a2 | 1755 | false, /* pc_relative */ |
84f1b9fb RL |
1756 | 10, /* bitpos */ |
1757 | complain_overflow_dont, /* complain_on_overflow */ | |
1758 | bfd_elf_generic_reloc, /* special_function */ | |
1759 | AARCH64_R_STR (TLSLE_LDST16_TPREL_LO12_NC), /* name */ | |
0a1b45a2 | 1760 | false, /* partial_inplace */ |
84f1b9fb RL |
1761 | 0x1ffc00, /* src_mask */ |
1762 | 0x1ffc00, /* dst_mask */ | |
0a1b45a2 | 1763 | false), /* pcrel_offset */ |
84f1b9fb RL |
1764 | |
1765 | /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */ | |
1766 | HOWTO (AARCH64_R (TLSLE_LDST32_TPREL_LO12), /* type */ | |
1767 | 2, /* rightshift */ | |
c94cb026 | 1768 | 4, /* size */ |
84f1b9fb | 1769 | 10, /* bitsize */ |
0a1b45a2 | 1770 | false, /* pc_relative */ |
84f1b9fb RL |
1771 | 10, /* bitpos */ |
1772 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1773 | bfd_elf_generic_reloc, /* special_function */ | |
1774 | AARCH64_R_STR (TLSLE_LDST32_TPREL_LO12), /* name */ | |
0a1b45a2 | 1775 | false, /* partial_inplace */ |
84f1b9fb RL |
1776 | 0xffc00, /* src_mask */ |
1777 | 0xffc00, /* dst_mask */ | |
0a1b45a2 | 1778 | false), /* pcrel_offset */ |
84f1b9fb RL |
1779 | |
1780 | /* Same as BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12, but no overflow check. */ | |
1781 | HOWTO (AARCH64_R (TLSLE_LDST32_TPREL_LO12_NC), /* type */ | |
1782 | 2, /* rightshift */ | |
c94cb026 | 1783 | 4, /* size */ |
84f1b9fb | 1784 | 10, /* bitsize */ |
0a1b45a2 | 1785 | false, /* pc_relative */ |
84f1b9fb RL |
1786 | 10, /* bitpos */ |
1787 | complain_overflow_dont, /* complain_on_overflow */ | |
1788 | bfd_elf_generic_reloc, /* special_function */ | |
1789 | AARCH64_R_STR (TLSLE_LDST32_TPREL_LO12_NC), /* name */ | |
0a1b45a2 | 1790 | false, /* partial_inplace */ |
84f1b9fb RL |
1791 | 0xffc00, /* src_mask */ |
1792 | 0xffc00, /* dst_mask */ | |
0a1b45a2 | 1793 | false), /* pcrel_offset */ |
84f1b9fb RL |
1794 | |
1795 | /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */ | |
1796 | HOWTO (AARCH64_R (TLSLE_LDST64_TPREL_LO12), /* type */ | |
1797 | 3, /* rightshift */ | |
c94cb026 | 1798 | 4, /* size */ |
84f1b9fb | 1799 | 9, /* bitsize */ |
0a1b45a2 | 1800 | false, /* pc_relative */ |
84f1b9fb RL |
1801 | 10, /* bitpos */ |
1802 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1803 | bfd_elf_generic_reloc, /* special_function */ | |
1804 | AARCH64_R_STR (TLSLE_LDST64_TPREL_LO12), /* name */ | |
0a1b45a2 | 1805 | false, /* partial_inplace */ |
84f1b9fb RL |
1806 | 0x7fc00, /* src_mask */ |
1807 | 0x7fc00, /* dst_mask */ | |
0a1b45a2 | 1808 | false), /* pcrel_offset */ |
84f1b9fb RL |
1809 | |
1810 | /* Same as BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12, but no overflow check. */ | |
1811 | HOWTO (AARCH64_R (TLSLE_LDST64_TPREL_LO12_NC), /* type */ | |
1812 | 3, /* rightshift */ | |
c94cb026 | 1813 | 4, /* size */ |
84f1b9fb | 1814 | 9, /* bitsize */ |
0a1b45a2 | 1815 | false, /* pc_relative */ |
84f1b9fb RL |
1816 | 10, /* bitpos */ |
1817 | complain_overflow_dont, /* complain_on_overflow */ | |
1818 | bfd_elf_generic_reloc, /* special_function */ | |
1819 | AARCH64_R_STR (TLSLE_LDST64_TPREL_LO12_NC), /* name */ | |
0a1b45a2 | 1820 | false, /* partial_inplace */ |
84f1b9fb RL |
1821 | 0x7fc00, /* src_mask */ |
1822 | 0x7fc00, /* dst_mask */ | |
0a1b45a2 | 1823 | false), /* pcrel_offset */ |
84f1b9fb RL |
1824 | |
1825 | /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */ | |
1826 | HOWTO (AARCH64_R (TLSLE_LDST8_TPREL_LO12), /* type */ | |
1827 | 0, /* rightshift */ | |
c94cb026 | 1828 | 4, /* size */ |
84f1b9fb | 1829 | 12, /* bitsize */ |
0a1b45a2 | 1830 | false, /* pc_relative */ |
84f1b9fb RL |
1831 | 10, /* bitpos */ |
1832 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1833 | bfd_elf_generic_reloc, /* special_function */ | |
1834 | AARCH64_R_STR (TLSLE_LDST8_TPREL_LO12), /* name */ | |
0a1b45a2 | 1835 | false, /* partial_inplace */ |
84f1b9fb RL |
1836 | 0x3ffc00, /* src_mask */ |
1837 | 0x3ffc00, /* dst_mask */ | |
0a1b45a2 | 1838 | false), /* pcrel_offset */ |
84f1b9fb RL |
1839 | |
1840 | /* Same as BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12, but no overflow check. */ | |
1841 | HOWTO (AARCH64_R (TLSLE_LDST8_TPREL_LO12_NC), /* type */ | |
1842 | 0, /* rightshift */ | |
c94cb026 | 1843 | 4, /* size */ |
84f1b9fb | 1844 | 12, /* bitsize */ |
0a1b45a2 | 1845 | false, /* pc_relative */ |
84f1b9fb RL |
1846 | 10, /* bitpos */ |
1847 | complain_overflow_dont, /* complain_on_overflow */ | |
1848 | bfd_elf_generic_reloc, /* special_function */ | |
1849 | AARCH64_R_STR (TLSLE_LDST8_TPREL_LO12_NC), /* name */ | |
0a1b45a2 | 1850 | false, /* partial_inplace */ |
84f1b9fb RL |
1851 | 0x3ffc00, /* src_mask */ |
1852 | 0x3ffc00, /* dst_mask */ | |
0a1b45a2 | 1853 | false), /* pcrel_offset */ |
84f1b9fb | 1854 | |
a6bb11b2 | 1855 | HOWTO (AARCH64_R (TLSDESC_LD_PREL19), /* type */ |
bb3f9ed8 | 1856 | 2, /* rightshift */ |
c94cb026 | 1857 | 4, /* size */ |
1ada945d | 1858 | 19, /* bitsize */ |
0a1b45a2 | 1859 | true, /* pc_relative */ |
a06ea964 NC |
1860 | 0, /* bitpos */ |
1861 | complain_overflow_dont, /* complain_on_overflow */ | |
1862 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1863 | AARCH64_R_STR (TLSDESC_LD_PREL19), /* name */ |
0a1b45a2 | 1864 | false, /* partial_inplace */ |
1ada945d MS |
1865 | 0x0ffffe0, /* src_mask */ |
1866 | 0x0ffffe0, /* dst_mask */ | |
0a1b45a2 | 1867 | true), /* pcrel_offset */ |
a06ea964 | 1868 | |
a6bb11b2 | 1869 | HOWTO (AARCH64_R (TLSDESC_ADR_PREL21), /* type */ |
a06ea964 | 1870 | 0, /* rightshift */ |
c94cb026 | 1871 | 4, /* size */ |
a06ea964 | 1872 | 21, /* bitsize */ |
0a1b45a2 | 1873 | true, /* pc_relative */ |
a06ea964 NC |
1874 | 0, /* bitpos */ |
1875 | complain_overflow_dont, /* complain_on_overflow */ | |
1876 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1877 | AARCH64_R_STR (TLSDESC_ADR_PREL21), /* name */ |
0a1b45a2 | 1878 | false, /* partial_inplace */ |
a06ea964 NC |
1879 | 0x1fffff, /* src_mask */ |
1880 | 0x1fffff, /* dst_mask */ | |
0a1b45a2 | 1881 | true), /* pcrel_offset */ |
a06ea964 NC |
1882 | |
1883 | /* Get to the page for the GOT entry for the symbol | |
1884 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 1885 | HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21), /* type */ |
a06ea964 | 1886 | 12, /* rightshift */ |
c94cb026 | 1887 | 4, /* size */ |
a06ea964 | 1888 | 21, /* bitsize */ |
0a1b45a2 | 1889 | true, /* pc_relative */ |
a06ea964 NC |
1890 | 0, /* bitpos */ |
1891 | complain_overflow_dont, /* complain_on_overflow */ | |
1892 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1893 | AARCH64_R_STR (TLSDESC_ADR_PAGE21), /* name */ |
0a1b45a2 | 1894 | false, /* partial_inplace */ |
a06ea964 NC |
1895 | 0x1fffff, /* src_mask */ |
1896 | 0x1fffff, /* dst_mask */ | |
0a1b45a2 | 1897 | true), /* pcrel_offset */ |
a06ea964 | 1898 | |
a6bb11b2 | 1899 | /* LD64: GOT offset G(S) & 0xff8. */ |
f955cccf | 1900 | HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12), /* type */ |
a06ea964 | 1901 | 3, /* rightshift */ |
c94cb026 | 1902 | 4, /* size */ |
a06ea964 | 1903 | 12, /* bitsize */ |
0a1b45a2 | 1904 | false, /* pc_relative */ |
a06ea964 NC |
1905 | 0, /* bitpos */ |
1906 | complain_overflow_dont, /* complain_on_overflow */ | |
1907 | bfd_elf_generic_reloc, /* special_function */ | |
f955cccf | 1908 | AARCH64_R_STR (TLSDESC_LD64_LO12), /* name */ |
0a1b45a2 | 1909 | false, /* partial_inplace */ |
a6bb11b2 YZ |
1910 | 0xff8, /* src_mask */ |
1911 | 0xff8, /* dst_mask */ | |
0a1b45a2 | 1912 | false), /* pcrel_offset */ |
a6bb11b2 YZ |
1913 | |
1914 | /* LD32: GOT offset G(S) & 0xffc. */ | |
1915 | HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC), /* type */ | |
1916 | 2, /* rightshift */ | |
c94cb026 | 1917 | 4, /* size */ |
a6bb11b2 | 1918 | 12, /* bitsize */ |
0a1b45a2 | 1919 | false, /* pc_relative */ |
a6bb11b2 YZ |
1920 | 0, /* bitpos */ |
1921 | complain_overflow_dont, /* complain_on_overflow */ | |
1922 | bfd_elf_generic_reloc, /* special_function */ | |
1923 | AARCH64_R_STR (TLSDESC_LD32_LO12_NC), /* name */ | |
0a1b45a2 | 1924 | false, /* partial_inplace */ |
a6bb11b2 YZ |
1925 | 0xffc, /* src_mask */ |
1926 | 0xffc, /* dst_mask */ | |
0a1b45a2 | 1927 | false), /* pcrel_offset */ |
a06ea964 NC |
1928 | |
1929 | /* ADD: GOT offset G(S) & 0xfff. */ | |
f955cccf | 1930 | HOWTO (AARCH64_R (TLSDESC_ADD_LO12), /* type */ |
a06ea964 | 1931 | 0, /* rightshift */ |
c94cb026 | 1932 | 4, /* size */ |
a06ea964 | 1933 | 12, /* bitsize */ |
0a1b45a2 | 1934 | false, /* pc_relative */ |
a06ea964 | 1935 | 0, /* bitpos */ |
f955cccf | 1936 | complain_overflow_dont,/* complain_on_overflow */ |
a06ea964 | 1937 | bfd_elf_generic_reloc, /* special_function */ |
f955cccf | 1938 | AARCH64_R_STR (TLSDESC_ADD_LO12), /* name */ |
0a1b45a2 | 1939 | false, /* partial_inplace */ |
a06ea964 NC |
1940 | 0xfff, /* src_mask */ |
1941 | 0xfff, /* dst_mask */ | |
0a1b45a2 | 1942 | false), /* pcrel_offset */ |
a06ea964 | 1943 | |
a6bb11b2 | 1944 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G1), /* type */ |
bb3f9ed8 | 1945 | 16, /* rightshift */ |
c94cb026 | 1946 | 4, /* size */ |
a06ea964 | 1947 | 12, /* bitsize */ |
0a1b45a2 | 1948 | false, /* pc_relative */ |
a06ea964 | 1949 | 0, /* bitpos */ |
43a357f9 | 1950 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1951 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1952 | AARCH64_R_STR (TLSDESC_OFF_G1), /* name */ |
0a1b45a2 | 1953 | false, /* partial_inplace */ |
a06ea964 NC |
1954 | 0xffff, /* src_mask */ |
1955 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 1956 | false), /* pcrel_offset */ |
a06ea964 | 1957 | |
a6bb11b2 | 1958 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC), /* type */ |
a06ea964 | 1959 | 0, /* rightshift */ |
c94cb026 | 1960 | 4, /* size */ |
a06ea964 | 1961 | 12, /* bitsize */ |
0a1b45a2 | 1962 | false, /* pc_relative */ |
a06ea964 NC |
1963 | 0, /* bitpos */ |
1964 | complain_overflow_dont, /* complain_on_overflow */ | |
1965 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1966 | AARCH64_R_STR (TLSDESC_OFF_G0_NC), /* name */ |
0a1b45a2 | 1967 | false, /* partial_inplace */ |
a06ea964 NC |
1968 | 0xffff, /* src_mask */ |
1969 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 1970 | false), /* pcrel_offset */ |
a06ea964 | 1971 | |
a6bb11b2 | 1972 | HOWTO64 (AARCH64_R (TLSDESC_LDR), /* type */ |
a06ea964 | 1973 | 0, /* rightshift */ |
c94cb026 | 1974 | 4, /* size */ |
a06ea964 | 1975 | 12, /* bitsize */ |
0a1b45a2 | 1976 | false, /* pc_relative */ |
a06ea964 NC |
1977 | 0, /* bitpos */ |
1978 | complain_overflow_dont, /* complain_on_overflow */ | |
1979 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1980 | AARCH64_R_STR (TLSDESC_LDR), /* name */ |
0a1b45a2 | 1981 | false, /* partial_inplace */ |
a06ea964 NC |
1982 | 0x0, /* src_mask */ |
1983 | 0x0, /* dst_mask */ | |
0a1b45a2 | 1984 | false), /* pcrel_offset */ |
a06ea964 | 1985 | |
a6bb11b2 | 1986 | HOWTO64 (AARCH64_R (TLSDESC_ADD), /* type */ |
a06ea964 | 1987 | 0, /* rightshift */ |
c94cb026 | 1988 | 4, /* size */ |
a06ea964 | 1989 | 12, /* bitsize */ |
0a1b45a2 | 1990 | false, /* pc_relative */ |
a06ea964 NC |
1991 | 0, /* bitpos */ |
1992 | complain_overflow_dont, /* complain_on_overflow */ | |
1993 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1994 | AARCH64_R_STR (TLSDESC_ADD), /* name */ |
0a1b45a2 | 1995 | false, /* partial_inplace */ |
a06ea964 NC |
1996 | 0x0, /* src_mask */ |
1997 | 0x0, /* dst_mask */ | |
0a1b45a2 | 1998 | false), /* pcrel_offset */ |
a06ea964 | 1999 | |
a6bb11b2 | 2000 | HOWTO (AARCH64_R (TLSDESC_CALL), /* type */ |
a06ea964 | 2001 | 0, /* rightshift */ |
c94cb026 | 2002 | 4, /* size */ |
7366006f | 2003 | 0, /* bitsize */ |
0a1b45a2 | 2004 | false, /* pc_relative */ |
a06ea964 NC |
2005 | 0, /* bitpos */ |
2006 | complain_overflow_dont, /* complain_on_overflow */ | |
2007 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 2008 | AARCH64_R_STR (TLSDESC_CALL), /* name */ |
0a1b45a2 | 2009 | false, /* partial_inplace */ |
a06ea964 NC |
2010 | 0x0, /* src_mask */ |
2011 | 0x0, /* dst_mask */ | |
0a1b45a2 | 2012 | false), /* pcrel_offset */ |
a6bb11b2 YZ |
2013 | |
2014 | HOWTO (AARCH64_R (COPY), /* type */ | |
2015 | 0, /* rightshift */ | |
c94cb026 | 2016 | 4, /* size */ |
a6bb11b2 | 2017 | 64, /* bitsize */ |
0a1b45a2 | 2018 | false, /* pc_relative */ |
a6bb11b2 YZ |
2019 | 0, /* bitpos */ |
2020 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2021 | bfd_elf_generic_reloc, /* special_function */ | |
2022 | AARCH64_R_STR (COPY), /* name */ | |
0a1b45a2 | 2023 | true, /* partial_inplace */ |
a6bb11b2 YZ |
2024 | 0xffffffff, /* src_mask */ |
2025 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 2026 | false), /* pcrel_offset */ |
a6bb11b2 YZ |
2027 | |
2028 | HOWTO (AARCH64_R (GLOB_DAT), /* type */ | |
2029 | 0, /* rightshift */ | |
c94cb026 | 2030 | 4, /* size */ |
a6bb11b2 | 2031 | 64, /* bitsize */ |
0a1b45a2 | 2032 | false, /* pc_relative */ |
a6bb11b2 YZ |
2033 | 0, /* bitpos */ |
2034 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2035 | bfd_elf_generic_reloc, /* special_function */ | |
2036 | AARCH64_R_STR (GLOB_DAT), /* name */ | |
0a1b45a2 | 2037 | true, /* partial_inplace */ |
a6bb11b2 YZ |
2038 | 0xffffffff, /* src_mask */ |
2039 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 2040 | false), /* pcrel_offset */ |
a6bb11b2 YZ |
2041 | |
2042 | HOWTO (AARCH64_R (JUMP_SLOT), /* type */ | |
2043 | 0, /* rightshift */ | |
c94cb026 | 2044 | 4, /* size */ |
a6bb11b2 | 2045 | 64, /* bitsize */ |
0a1b45a2 | 2046 | false, /* pc_relative */ |
a6bb11b2 YZ |
2047 | 0, /* bitpos */ |
2048 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2049 | bfd_elf_generic_reloc, /* special_function */ | |
2050 | AARCH64_R_STR (JUMP_SLOT), /* name */ | |
0a1b45a2 | 2051 | true, /* partial_inplace */ |
a6bb11b2 YZ |
2052 | 0xffffffff, /* src_mask */ |
2053 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 2054 | false), /* pcrel_offset */ |
a6bb11b2 YZ |
2055 | |
2056 | HOWTO (AARCH64_R (RELATIVE), /* type */ | |
2057 | 0, /* rightshift */ | |
c94cb026 | 2058 | 4, /* size */ |
a6bb11b2 | 2059 | 64, /* bitsize */ |
0a1b45a2 | 2060 | false, /* pc_relative */ |
a6bb11b2 YZ |
2061 | 0, /* bitpos */ |
2062 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2063 | bfd_elf_generic_reloc, /* special_function */ | |
2064 | AARCH64_R_STR (RELATIVE), /* name */ | |
0a1b45a2 | 2065 | true, /* partial_inplace */ |
a6bb11b2 YZ |
2066 | ALL_ONES, /* src_mask */ |
2067 | ALL_ONES, /* dst_mask */ | |
0a1b45a2 | 2068 | false), /* pcrel_offset */ |
a6bb11b2 YZ |
2069 | |
2070 | HOWTO (AARCH64_R (TLS_DTPMOD), /* type */ | |
2071 | 0, /* rightshift */ | |
c94cb026 | 2072 | 4, /* size */ |
a6bb11b2 | 2073 | 64, /* bitsize */ |
0a1b45a2 | 2074 | false, /* pc_relative */ |
a6bb11b2 YZ |
2075 | 0, /* bitpos */ |
2076 | complain_overflow_dont, /* complain_on_overflow */ | |
2077 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
2078 | #if ARCH_SIZE == 64 |
2079 | AARCH64_R_STR (TLS_DTPMOD64), /* name */ | |
2080 | #else | |
a6bb11b2 | 2081 | AARCH64_R_STR (TLS_DTPMOD), /* name */ |
da0781dc | 2082 | #endif |
0a1b45a2 | 2083 | false, /* partial_inplace */ |
a6bb11b2 YZ |
2084 | 0, /* src_mask */ |
2085 | ALL_ONES, /* dst_mask */ | |
0a1b45a2 | 2086 | false), /* pc_reloffset */ |
a6bb11b2 YZ |
2087 | |
2088 | HOWTO (AARCH64_R (TLS_DTPREL), /* type */ | |
2089 | 0, /* rightshift */ | |
c94cb026 | 2090 | 4, /* size */ |
a6bb11b2 | 2091 | 64, /* bitsize */ |
0a1b45a2 | 2092 | false, /* pc_relative */ |
a6bb11b2 YZ |
2093 | 0, /* bitpos */ |
2094 | complain_overflow_dont, /* complain_on_overflow */ | |
2095 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
2096 | #if ARCH_SIZE == 64 |
2097 | AARCH64_R_STR (TLS_DTPREL64), /* name */ | |
2098 | #else | |
a6bb11b2 | 2099 | AARCH64_R_STR (TLS_DTPREL), /* name */ |
da0781dc | 2100 | #endif |
0a1b45a2 | 2101 | false, /* partial_inplace */ |
a6bb11b2 YZ |
2102 | 0, /* src_mask */ |
2103 | ALL_ONES, /* dst_mask */ | |
0a1b45a2 | 2104 | false), /* pcrel_offset */ |
a6bb11b2 YZ |
2105 | |
2106 | HOWTO (AARCH64_R (TLS_TPREL), /* type */ | |
2107 | 0, /* rightshift */ | |
c94cb026 | 2108 | 4, /* size */ |
a6bb11b2 | 2109 | 64, /* bitsize */ |
0a1b45a2 | 2110 | false, /* pc_relative */ |
a6bb11b2 YZ |
2111 | 0, /* bitpos */ |
2112 | complain_overflow_dont, /* complain_on_overflow */ | |
2113 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
2114 | #if ARCH_SIZE == 64 |
2115 | AARCH64_R_STR (TLS_TPREL64), /* name */ | |
2116 | #else | |
a6bb11b2 | 2117 | AARCH64_R_STR (TLS_TPREL), /* name */ |
da0781dc | 2118 | #endif |
0a1b45a2 | 2119 | false, /* partial_inplace */ |
a6bb11b2 YZ |
2120 | 0, /* src_mask */ |
2121 | ALL_ONES, /* dst_mask */ | |
0a1b45a2 | 2122 | false), /* pcrel_offset */ |
a6bb11b2 YZ |
2123 | |
2124 | HOWTO (AARCH64_R (TLSDESC), /* type */ | |
2125 | 0, /* rightshift */ | |
c94cb026 | 2126 | 4, /* size */ |
a6bb11b2 | 2127 | 64, /* bitsize */ |
0a1b45a2 | 2128 | false, /* pc_relative */ |
a6bb11b2 YZ |
2129 | 0, /* bitpos */ |
2130 | complain_overflow_dont, /* complain_on_overflow */ | |
2131 | bfd_elf_generic_reloc, /* special_function */ | |
2132 | AARCH64_R_STR (TLSDESC), /* name */ | |
0a1b45a2 | 2133 | false, /* partial_inplace */ |
a6bb11b2 YZ |
2134 | 0, /* src_mask */ |
2135 | ALL_ONES, /* dst_mask */ | |
0a1b45a2 | 2136 | false), /* pcrel_offset */ |
a6bb11b2 YZ |
2137 | |
2138 | HOWTO (AARCH64_R (IRELATIVE), /* type */ | |
2139 | 0, /* rightshift */ | |
c94cb026 | 2140 | 4, /* size */ |
a6bb11b2 | 2141 | 64, /* bitsize */ |
0a1b45a2 | 2142 | false, /* pc_relative */ |
a6bb11b2 YZ |
2143 | 0, /* bitpos */ |
2144 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2145 | bfd_elf_generic_reloc, /* special_function */ | |
2146 | AARCH64_R_STR (IRELATIVE), /* name */ | |
0a1b45a2 | 2147 | false, /* partial_inplace */ |
a6bb11b2 YZ |
2148 | 0, /* src_mask */ |
2149 | ALL_ONES, /* dst_mask */ | |
0a1b45a2 | 2150 | false), /* pcrel_offset */ |
a6bb11b2 YZ |
2151 | |
2152 | EMPTY_HOWTO (0), | |
a06ea964 NC |
2153 | }; |
2154 | ||
a6bb11b2 YZ |
2155 | static reloc_howto_type elfNN_aarch64_howto_none = |
2156 | HOWTO (R_AARCH64_NONE, /* type */ | |
2157 | 0, /* rightshift */ | |
c94cb026 | 2158 | 0, /* size */ |
a6bb11b2 | 2159 | 0, /* bitsize */ |
0a1b45a2 | 2160 | false, /* pc_relative */ |
a6bb11b2 YZ |
2161 | 0, /* bitpos */ |
2162 | complain_overflow_dont,/* complain_on_overflow */ | |
2163 | bfd_elf_generic_reloc, /* special_function */ | |
2164 | "R_AARCH64_NONE", /* name */ | |
0a1b45a2 | 2165 | false, /* partial_inplace */ |
a6bb11b2 YZ |
2166 | 0, /* src_mask */ |
2167 | 0, /* dst_mask */ | |
0a1b45a2 | 2168 | false); /* pcrel_offset */ |
a6bb11b2 YZ |
2169 | |
2170 | /* Given HOWTO, return the bfd internal relocation enumerator. */ | |
2171 | ||
2172 | static bfd_reloc_code_real_type | |
2173 | elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type *howto) | |
2174 | { | |
2175 | const int size | |
2176 | = (int) ARRAY_SIZE (elfNN_aarch64_howto_table); | |
2177 | const ptrdiff_t offset | |
2178 | = howto - elfNN_aarch64_howto_table; | |
2179 | ||
2180 | if (offset > 0 && offset < size - 1) | |
2181 | return BFD_RELOC_AARCH64_RELOC_START + offset; | |
2182 | ||
2183 | if (howto == &elfNN_aarch64_howto_none) | |
2184 | return BFD_RELOC_AARCH64_NONE; | |
2185 | ||
2186 | return BFD_RELOC_AARCH64_RELOC_START; | |
2187 | } | |
2188 | ||
2189 | /* Given R_TYPE, return the bfd internal relocation enumerator. */ | |
2190 | ||
2191 | static bfd_reloc_code_real_type | |
0aa13fee | 2192 | elfNN_aarch64_bfd_reloc_from_type (bfd *abfd, unsigned int r_type) |
a6bb11b2 | 2193 | { |
0a1b45a2 | 2194 | static bool initialized_p = false; |
a6bb11b2 YZ |
2195 | /* Indexed by R_TYPE, values are offsets in the howto_table. */ |
2196 | static unsigned int offsets[R_AARCH64_end]; | |
2197 | ||
535b785f | 2198 | if (!initialized_p) |
a6bb11b2 YZ |
2199 | { |
2200 | unsigned int i; | |
2201 | ||
2202 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) | |
2203 | if (elfNN_aarch64_howto_table[i].type != 0) | |
2204 | offsets[elfNN_aarch64_howto_table[i].type] = i; | |
2205 | ||
0a1b45a2 | 2206 | initialized_p = true; |
a6bb11b2 YZ |
2207 | } |
2208 | ||
2209 | if (r_type == R_AARCH64_NONE || r_type == R_AARCH64_NULL) | |
2210 | return BFD_RELOC_AARCH64_NONE; | |
2211 | ||
5860e3f8 NC |
2212 | /* PR 17512: file: b371e70a. */ |
2213 | if (r_type >= R_AARCH64_end) | |
2214 | { | |
0aa13fee AM |
2215 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
2216 | abfd, r_type); | |
5860e3f8 NC |
2217 | bfd_set_error (bfd_error_bad_value); |
2218 | return BFD_RELOC_AARCH64_NONE; | |
2219 | } | |
2220 | ||
a6bb11b2 YZ |
2221 | return BFD_RELOC_AARCH64_RELOC_START + offsets[r_type]; |
2222 | } | |
2223 | ||
2224 | struct elf_aarch64_reloc_map | |
2225 | { | |
2226 | bfd_reloc_code_real_type from; | |
2227 | bfd_reloc_code_real_type to; | |
2228 | }; | |
2229 | ||
2230 | /* Map bfd generic reloc to AArch64-specific reloc. */ | |
2231 | static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map[] = | |
2232 | { | |
2233 | {BFD_RELOC_NONE, BFD_RELOC_AARCH64_NONE}, | |
2234 | ||
2235 | /* Basic data relocations. */ | |
2236 | {BFD_RELOC_CTOR, BFD_RELOC_AARCH64_NN}, | |
2237 | {BFD_RELOC_64, BFD_RELOC_AARCH64_64}, | |
2238 | {BFD_RELOC_32, BFD_RELOC_AARCH64_32}, | |
2239 | {BFD_RELOC_16, BFD_RELOC_AARCH64_16}, | |
2240 | {BFD_RELOC_64_PCREL, BFD_RELOC_AARCH64_64_PCREL}, | |
2241 | {BFD_RELOC_32_PCREL, BFD_RELOC_AARCH64_32_PCREL}, | |
2242 | {BFD_RELOC_16_PCREL, BFD_RELOC_AARCH64_16_PCREL}, | |
2243 | }; | |
2244 | ||
2245 | /* Given the bfd internal relocation enumerator in CODE, return the | |
2246 | corresponding howto entry. */ | |
2247 | ||
2248 | static reloc_howto_type * | |
2249 | elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code) | |
2250 | { | |
2251 | unsigned int i; | |
2252 | ||
2253 | /* Convert bfd generic reloc to AArch64-specific reloc. */ | |
2254 | if (code < BFD_RELOC_AARCH64_RELOC_START | |
2255 | || code > BFD_RELOC_AARCH64_RELOC_END) | |
2256 | for (i = 0; i < ARRAY_SIZE (elf_aarch64_reloc_map); i++) | |
2257 | if (elf_aarch64_reloc_map[i].from == code) | |
2258 | { | |
2259 | code = elf_aarch64_reloc_map[i].to; | |
2260 | break; | |
2261 | } | |
2262 | ||
2263 | if (code > BFD_RELOC_AARCH64_RELOC_START | |
2264 | && code < BFD_RELOC_AARCH64_RELOC_END) | |
2265 | if (elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START].type) | |
2266 | return &elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START]; | |
2267 | ||
54757ed1 AP |
2268 | if (code == BFD_RELOC_AARCH64_NONE) |
2269 | return &elfNN_aarch64_howto_none; | |
2270 | ||
a6bb11b2 YZ |
2271 | return NULL; |
2272 | } | |
2273 | ||
a06ea964 | 2274 | static reloc_howto_type * |
0aa13fee | 2275 | elfNN_aarch64_howto_from_type (bfd *abfd, unsigned int r_type) |
a06ea964 | 2276 | { |
a6bb11b2 YZ |
2277 | bfd_reloc_code_real_type val; |
2278 | reloc_howto_type *howto; | |
2279 | ||
cec5225b YZ |
2280 | #if ARCH_SIZE == 32 |
2281 | if (r_type > 256) | |
2282 | { | |
2283 | bfd_set_error (bfd_error_bad_value); | |
2284 | return NULL; | |
2285 | } | |
2286 | #endif | |
2287 | ||
a6bb11b2 YZ |
2288 | if (r_type == R_AARCH64_NONE) |
2289 | return &elfNN_aarch64_howto_none; | |
a06ea964 | 2290 | |
0aa13fee | 2291 | val = elfNN_aarch64_bfd_reloc_from_type (abfd, r_type); |
a6bb11b2 | 2292 | howto = elfNN_aarch64_howto_from_bfd_reloc (val); |
a06ea964 | 2293 | |
a6bb11b2 YZ |
2294 | if (howto != NULL) |
2295 | return howto; | |
a06ea964 | 2296 | |
a06ea964 NC |
2297 | bfd_set_error (bfd_error_bad_value); |
2298 | return NULL; | |
2299 | } | |
2300 | ||
0a1b45a2 | 2301 | static bool |
0aa13fee | 2302 | elfNN_aarch64_info_to_howto (bfd *abfd, arelent *bfd_reloc, |
a06ea964 NC |
2303 | Elf_Internal_Rela *elf_reloc) |
2304 | { | |
2305 | unsigned int r_type; | |
2306 | ||
cec5225b | 2307 | r_type = ELFNN_R_TYPE (elf_reloc->r_info); |
0aa13fee | 2308 | bfd_reloc->howto = elfNN_aarch64_howto_from_type (abfd, r_type); |
f3185997 NC |
2309 | |
2310 | if (bfd_reloc->howto == NULL) | |
2311 | { | |
2312 | /* xgettext:c-format */ | |
2313 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, r_type); | |
0a1b45a2 | 2314 | return false; |
f3185997 | 2315 | } |
0a1b45a2 | 2316 | return true; |
a06ea964 NC |
2317 | } |
2318 | ||
a06ea964 | 2319 | static reloc_howto_type * |
cec5225b | 2320 | elfNN_aarch64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
2321 | bfd_reloc_code_real_type code) |
2322 | { | |
a6bb11b2 | 2323 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (code); |
a06ea964 | 2324 | |
a6bb11b2 YZ |
2325 | if (howto != NULL) |
2326 | return howto; | |
a06ea964 NC |
2327 | |
2328 | bfd_set_error (bfd_error_bad_value); | |
2329 | return NULL; | |
2330 | } | |
2331 | ||
2332 | static reloc_howto_type * | |
cec5225b | 2333 | elfNN_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
2334 | const char *r_name) |
2335 | { | |
2336 | unsigned int i; | |
2337 | ||
a6bb11b2 YZ |
2338 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) |
2339 | if (elfNN_aarch64_howto_table[i].name != NULL | |
2340 | && strcasecmp (elfNN_aarch64_howto_table[i].name, r_name) == 0) | |
2341 | return &elfNN_aarch64_howto_table[i]; | |
a06ea964 NC |
2342 | |
2343 | return NULL; | |
2344 | } | |
2345 | ||
07d6d2b8 AM |
2346 | #define TARGET_LITTLE_SYM aarch64_elfNN_le_vec |
2347 | #define TARGET_LITTLE_NAME "elfNN-littleaarch64" | |
2348 | #define TARGET_BIG_SYM aarch64_elfNN_be_vec | |
2349 | #define TARGET_BIG_NAME "elfNN-bigaarch64" | |
a06ea964 | 2350 | |
a06ea964 NC |
2351 | /* The linker script knows the section names for placement. |
2352 | The entry_names are used to do simple name mangling on the stubs. | |
2353 | Given a function name, and its type, the stub can be found. The | |
2354 | name can be changed. The only requirement is the %s be present. */ | |
2355 | #define STUB_ENTRY_NAME "__%s_veneer" | |
2356 | ||
2357 | /* The name of the dynamic interpreter. This is put in the .interp | |
2358 | section. */ | |
2359 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
2360 | ||
2361 | #define AARCH64_MAX_FWD_BRANCH_OFFSET \ | |
2362 | (((1 << 25) - 1) << 2) | |
2363 | #define AARCH64_MAX_BWD_BRANCH_OFFSET \ | |
2364 | (-((1 << 25) << 2)) | |
2365 | ||
2366 | #define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1) | |
2367 | #define AARCH64_MIN_ADRP_IMM (-(1 << 20)) | |
2368 | ||
2369 | static int | |
2370 | aarch64_valid_for_adrp_p (bfd_vma value, bfd_vma place) | |
2371 | { | |
2372 | bfd_signed_vma offset = (bfd_signed_vma) (PG (value) - PG (place)) >> 12; | |
2373 | return offset <= AARCH64_MAX_ADRP_IMM && offset >= AARCH64_MIN_ADRP_IMM; | |
2374 | } | |
2375 | ||
2376 | static int | |
2377 | aarch64_valid_branch_p (bfd_vma value, bfd_vma place) | |
2378 | { | |
2379 | bfd_signed_vma offset = (bfd_signed_vma) (value - place); | |
2380 | return (offset <= AARCH64_MAX_FWD_BRANCH_OFFSET | |
2381 | && offset >= AARCH64_MAX_BWD_BRANCH_OFFSET); | |
2382 | } | |
2383 | ||
2384 | static const uint32_t aarch64_adrp_branch_stub [] = | |
2385 | { | |
2386 | 0x90000010, /* adrp ip0, X */ | |
2387 | /* R_AARCH64_ADR_HI21_PCREL(X) */ | |
2388 | 0x91000210, /* add ip0, ip0, :lo12:X */ | |
2389 | /* R_AARCH64_ADD_ABS_LO12_NC(X) */ | |
2390 | 0xd61f0200, /* br ip0 */ | |
2391 | }; | |
2392 | ||
2393 | static const uint32_t aarch64_long_branch_stub[] = | |
2394 | { | |
cec5225b | 2395 | #if ARCH_SIZE == 64 |
a06ea964 | 2396 | 0x58000090, /* ldr ip0, 1f */ |
cec5225b YZ |
2397 | #else |
2398 | 0x18000090, /* ldr wip0, 1f */ | |
2399 | #endif | |
a06ea964 NC |
2400 | 0x10000011, /* adr ip1, #0 */ |
2401 | 0x8b110210, /* add ip0, ip0, ip1 */ | |
2402 | 0xd61f0200, /* br ip0 */ | |
cec5225b YZ |
2403 | 0x00000000, /* 1: .xword or .word |
2404 | R_AARCH64_PRELNN(X) + 12 | |
a06ea964 NC |
2405 | */ |
2406 | 0x00000000, | |
2407 | }; | |
2408 | ||
68fcca92 JW |
2409 | static const uint32_t aarch64_erratum_835769_stub[] = |
2410 | { | |
2411 | 0x00000000, /* Placeholder for multiply accumulate. */ | |
2412 | 0x14000000, /* b <label> */ | |
2413 | }; | |
2414 | ||
4106101c MS |
2415 | static const uint32_t aarch64_erratum_843419_stub[] = |
2416 | { | |
2417 | 0x00000000, /* Placeholder for LDR instruction. */ | |
2418 | 0x14000000, /* b <label> */ | |
2419 | }; | |
2420 | ||
a06ea964 NC |
2421 | /* Section name for stubs is the associated section name plus this |
2422 | string. */ | |
2423 | #define STUB_SUFFIX ".stub" | |
2424 | ||
cec5225b | 2425 | enum elf_aarch64_stub_type |
a06ea964 NC |
2426 | { |
2427 | aarch64_stub_none, | |
2428 | aarch64_stub_adrp_branch, | |
2429 | aarch64_stub_long_branch, | |
68fcca92 | 2430 | aarch64_stub_erratum_835769_veneer, |
4106101c | 2431 | aarch64_stub_erratum_843419_veneer, |
a06ea964 NC |
2432 | }; |
2433 | ||
cec5225b | 2434 | struct elf_aarch64_stub_hash_entry |
a06ea964 NC |
2435 | { |
2436 | /* Base hash table entry structure. */ | |
2437 | struct bfd_hash_entry root; | |
2438 | ||
2439 | /* The stub section. */ | |
2440 | asection *stub_sec; | |
2441 | ||
2442 | /* Offset within stub_sec of the beginning of this stub. */ | |
2443 | bfd_vma stub_offset; | |
2444 | ||
2445 | /* Given the symbol's value and its section we can determine its final | |
2446 | value when building the stubs (so the stub knows where to jump). */ | |
2447 | bfd_vma target_value; | |
2448 | asection *target_section; | |
2449 | ||
cec5225b | 2450 | enum elf_aarch64_stub_type stub_type; |
a06ea964 NC |
2451 | |
2452 | /* The symbol table entry, if any, that this was derived from. */ | |
cec5225b | 2453 | struct elf_aarch64_link_hash_entry *h; |
a06ea964 NC |
2454 | |
2455 | /* Destination symbol type */ | |
2456 | unsigned char st_type; | |
2457 | ||
2458 | /* Where this stub is being called from, or, in the case of combined | |
2459 | stub sections, the first input section in the group. */ | |
2460 | asection *id_sec; | |
2461 | ||
2462 | /* The name for the local symbol at the start of this stub. The | |
2463 | stub name in the hash table has to be unique; this does not, so | |
2464 | it can be friendlier. */ | |
2465 | char *output_name; | |
68fcca92 JW |
2466 | |
2467 | /* The instruction which caused this stub to be generated (only valid for | |
2468 | erratum 835769 workaround stubs at present). */ | |
2469 | uint32_t veneered_insn; | |
4106101c MS |
2470 | |
2471 | /* In an erratum 843419 workaround stub, the ADRP instruction offset. */ | |
2472 | bfd_vma adrp_offset; | |
a06ea964 NC |
2473 | }; |
2474 | ||
2475 | /* Used to build a map of a section. This is required for mixed-endian | |
2476 | code/data. */ | |
2477 | ||
cec5225b | 2478 | typedef struct elf_elf_section_map |
a06ea964 NC |
2479 | { |
2480 | bfd_vma vma; | |
2481 | char type; | |
2482 | } | |
cec5225b | 2483 | elf_aarch64_section_map; |
a06ea964 NC |
2484 | |
2485 | ||
2486 | typedef struct _aarch64_elf_section_data | |
2487 | { | |
2488 | struct bfd_elf_section_data elf; | |
2489 | unsigned int mapcount; | |
2490 | unsigned int mapsize; | |
cec5225b | 2491 | elf_aarch64_section_map *map; |
a06ea964 NC |
2492 | } |
2493 | _aarch64_elf_section_data; | |
2494 | ||
cec5225b | 2495 | #define elf_aarch64_section_data(sec) \ |
a06ea964 NC |
2496 | ((_aarch64_elf_section_data *) elf_section_data (sec)) |
2497 | ||
4e8516b2 AP |
2498 | /* The size of the thread control block which is defined to be two pointers. */ |
2499 | #define TCB_SIZE (ARCH_SIZE/8)*2 | |
a06ea964 NC |
2500 | |
2501 | struct elf_aarch64_local_symbol | |
2502 | { | |
2503 | unsigned int got_type; | |
2504 | bfd_signed_vma got_refcount; | |
2505 | bfd_vma got_offset; | |
2506 | ||
2507 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The | |
2508 | offset is from the end of the jump table and reserved entries | |
2509 | within the PLTGOT. | |
2510 | ||
2511 | The magic value (bfd_vma) -1 indicates that an offset has not be | |
2512 | allocated. */ | |
2513 | bfd_vma tlsdesc_got_jump_table_offset; | |
2514 | }; | |
2515 | ||
2516 | struct elf_aarch64_obj_tdata | |
2517 | { | |
2518 | struct elf_obj_tdata root; | |
2519 | ||
2520 | /* local symbol descriptors */ | |
2521 | struct elf_aarch64_local_symbol *locals; | |
2522 | ||
2523 | /* Zero to warn when linking objects with incompatible enum sizes. */ | |
2524 | int no_enum_size_warning; | |
2525 | ||
2526 | /* Zero to warn when linking objects with incompatible wchar_t sizes. */ | |
2527 | int no_wchar_size_warning; | |
cd702818 SD |
2528 | |
2529 | /* All GNU_PROPERTY_AARCH64_FEATURE_1_AND properties. */ | |
2530 | uint32_t gnu_and_prop; | |
37c18eed SD |
2531 | |
2532 | /* Zero to warn when linking objects with incompatible | |
2533 | GNU_PROPERTY_AARCH64_FEATURE_1_BTI. */ | |
2534 | int no_bti_warn; | |
2535 | ||
2536 | /* PLT type based on security. */ | |
2537 | aarch64_plt_type plt_type; | |
a06ea964 NC |
2538 | }; |
2539 | ||
2540 | #define elf_aarch64_tdata(bfd) \ | |
2541 | ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any) | |
2542 | ||
cec5225b | 2543 | #define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals) |
a06ea964 NC |
2544 | |
2545 | #define is_aarch64_elf(bfd) \ | |
2546 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
2547 | && elf_tdata (bfd) != NULL \ | |
2548 | && elf_object_id (bfd) == AARCH64_ELF_DATA) | |
2549 | ||
0a1b45a2 | 2550 | static bool |
cec5225b | 2551 | elfNN_aarch64_mkobject (bfd *abfd) |
a06ea964 NC |
2552 | { |
2553 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_aarch64_obj_tdata), | |
2554 | AARCH64_ELF_DATA); | |
2555 | } | |
2556 | ||
cec5225b YZ |
2557 | #define elf_aarch64_hash_entry(ent) \ |
2558 | ((struct elf_aarch64_link_hash_entry *)(ent)) | |
a06ea964 NC |
2559 | |
2560 | #define GOT_UNKNOWN 0 | |
2561 | #define GOT_NORMAL 1 | |
2562 | #define GOT_TLS_GD 2 | |
2563 | #define GOT_TLS_IE 4 | |
2564 | #define GOT_TLSDESC_GD 8 | |
2565 | ||
2566 | #define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD)) | |
2567 | ||
2568 | /* AArch64 ELF linker hash entry. */ | |
cec5225b | 2569 | struct elf_aarch64_link_hash_entry |
a06ea964 NC |
2570 | { |
2571 | struct elf_link_hash_entry root; | |
2572 | ||
a06ea964 NC |
2573 | /* Since PLT entries have variable size, we need to record the |
2574 | index into .got.plt instead of recomputing it from the PLT | |
2575 | offset. */ | |
2576 | bfd_signed_vma plt_got_offset; | |
2577 | ||
2578 | /* Bit mask representing the type of GOT entry(s) if any required by | |
2579 | this symbol. */ | |
2580 | unsigned int got_type; | |
2581 | ||
2582 | /* A pointer to the most recently used stub hash entry against this | |
2583 | symbol. */ | |
cec5225b | 2584 | struct elf_aarch64_stub_hash_entry *stub_cache; |
a06ea964 NC |
2585 | |
2586 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset | |
2587 | is from the end of the jump table and reserved entries within the PLTGOT. | |
2588 | ||
2589 | The magic value (bfd_vma) -1 indicates that an offset has not | |
2590 | be allocated. */ | |
2591 | bfd_vma tlsdesc_got_jump_table_offset; | |
2592 | }; | |
2593 | ||
2594 | static unsigned int | |
cec5225b | 2595 | elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry *h, |
a06ea964 NC |
2596 | bfd *abfd, |
2597 | unsigned long r_symndx) | |
2598 | { | |
2599 | if (h) | |
cec5225b | 2600 | return elf_aarch64_hash_entry (h)->got_type; |
a06ea964 | 2601 | |
cec5225b | 2602 | if (! elf_aarch64_locals (abfd)) |
a06ea964 NC |
2603 | return GOT_UNKNOWN; |
2604 | ||
cec5225b | 2605 | return elf_aarch64_locals (abfd)[r_symndx].got_type; |
a06ea964 NC |
2606 | } |
2607 | ||
a06ea964 | 2608 | /* Get the AArch64 elf linker hash table from a link_info structure. */ |
cec5225b YZ |
2609 | #define elf_aarch64_hash_table(info) \ |
2610 | ((struct elf_aarch64_link_hash_table *) ((info)->hash)) | |
a06ea964 NC |
2611 | |
2612 | #define aarch64_stub_hash_lookup(table, string, create, copy) \ | |
cec5225b | 2613 | ((struct elf_aarch64_stub_hash_entry *) \ |
a06ea964 NC |
2614 | bfd_hash_lookup ((table), (string), (create), (copy))) |
2615 | ||
2616 | /* AArch64 ELF linker hash table. */ | |
cec5225b | 2617 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
2618 | { |
2619 | /* The main hash table. */ | |
2620 | struct elf_link_hash_table root; | |
2621 | ||
2622 | /* Nonzero to force PIC branch veneers. */ | |
2623 | int pic_veneer; | |
2624 | ||
68fcca92 JW |
2625 | /* Fix erratum 835769. */ |
2626 | int fix_erratum_835769; | |
2627 | ||
4106101c | 2628 | /* Fix erratum 843419. */ |
739b5c9c | 2629 | erratum_84319_opts fix_erratum_843419; |
4106101c | 2630 | |
1f56df9d JW |
2631 | /* Don't apply link-time values for dynamic relocations. */ |
2632 | int no_apply_dynamic_relocs; | |
2633 | ||
a06ea964 NC |
2634 | /* The number of bytes in the initial entry in the PLT. */ |
2635 | bfd_size_type plt_header_size; | |
2636 | ||
37c18eed SD |
2637 | /* The bytes of the initial PLT entry. */ |
2638 | const bfd_byte *plt0_entry; | |
2639 | ||
2640 | /* The number of bytes in the subsequent PLT entries. */ | |
a06ea964 NC |
2641 | bfd_size_type plt_entry_size; |
2642 | ||
37c18eed SD |
2643 | /* The bytes of the subsequent PLT entry. */ |
2644 | const bfd_byte *plt_entry; | |
2645 | ||
a06ea964 NC |
2646 | /* For convenience in allocate_dynrelocs. */ |
2647 | bfd *obfd; | |
2648 | ||
2649 | /* The amount of space used by the reserved portion of the sgotplt | |
2650 | section, plus whatever space is used by the jump slots. */ | |
2651 | bfd_vma sgotplt_jump_table_size; | |
2652 | ||
2653 | /* The stub hash table. */ | |
2654 | struct bfd_hash_table stub_hash_table; | |
2655 | ||
2656 | /* Linker stub bfd. */ | |
2657 | bfd *stub_bfd; | |
2658 | ||
2659 | /* Linker call-backs. */ | |
2660 | asection *(*add_stub_section) (const char *, asection *); | |
2661 | void (*layout_sections_again) (void); | |
2662 | ||
2663 | /* Array to keep track of which stub sections have been created, and | |
2664 | information on stub grouping. */ | |
2665 | struct map_stub | |
2666 | { | |
2667 | /* This is the section to which stubs in the group will be | |
2668 | attached. */ | |
2669 | asection *link_sec; | |
2670 | /* The stub section. */ | |
2671 | asection *stub_sec; | |
2672 | } *stub_group; | |
2673 | ||
cec5225b | 2674 | /* Assorted information used by elfNN_aarch64_size_stubs. */ |
a06ea964 | 2675 | unsigned int bfd_count; |
7292b3ac | 2676 | unsigned int top_index; |
a06ea964 NC |
2677 | asection **input_list; |
2678 | ||
823710d5 SN |
2679 | /* JUMP_SLOT relocs for variant PCS symbols may be present. */ |
2680 | int variant_pcs; | |
2681 | ||
37c18eed SD |
2682 | /* The number of bytes in the PLT enty for the TLS descriptor. */ |
2683 | bfd_size_type tlsdesc_plt_entry_size; | |
2684 | ||
1419bbe5 WN |
2685 | /* Used by local STT_GNU_IFUNC symbols. */ |
2686 | htab_t loc_hash_table; | |
2687 | void * loc_hash_memory; | |
a06ea964 NC |
2688 | }; |
2689 | ||
a06ea964 NC |
2690 | /* Create an entry in an AArch64 ELF linker hash table. */ |
2691 | ||
2692 | static struct bfd_hash_entry * | |
cec5225b | 2693 | elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry, |
a06ea964 NC |
2694 | struct bfd_hash_table *table, |
2695 | const char *string) | |
2696 | { | |
cec5225b YZ |
2697 | struct elf_aarch64_link_hash_entry *ret = |
2698 | (struct elf_aarch64_link_hash_entry *) entry; | |
a06ea964 NC |
2699 | |
2700 | /* Allocate the structure if it has not already been allocated by a | |
2701 | subclass. */ | |
2702 | if (ret == NULL) | |
2703 | ret = bfd_hash_allocate (table, | |
cec5225b | 2704 | sizeof (struct elf_aarch64_link_hash_entry)); |
a06ea964 NC |
2705 | if (ret == NULL) |
2706 | return (struct bfd_hash_entry *) ret; | |
2707 | ||
2708 | /* Call the allocation method of the superclass. */ | |
cec5225b | 2709 | ret = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
2710 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
2711 | table, string)); | |
2712 | if (ret != NULL) | |
2713 | { | |
a06ea964 NC |
2714 | ret->got_type = GOT_UNKNOWN; |
2715 | ret->plt_got_offset = (bfd_vma) - 1; | |
2716 | ret->stub_cache = NULL; | |
2717 | ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
2718 | } | |
2719 | ||
2720 | return (struct bfd_hash_entry *) ret; | |
2721 | } | |
2722 | ||
2723 | /* Initialize an entry in the stub hash table. */ | |
2724 | ||
2725 | static struct bfd_hash_entry * | |
2726 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
2727 | struct bfd_hash_table *table, const char *string) | |
2728 | { | |
2729 | /* Allocate the structure if it has not already been allocated by a | |
2730 | subclass. */ | |
2731 | if (entry == NULL) | |
2732 | { | |
2733 | entry = bfd_hash_allocate (table, | |
2734 | sizeof (struct | |
cec5225b | 2735 | elf_aarch64_stub_hash_entry)); |
a06ea964 NC |
2736 | if (entry == NULL) |
2737 | return entry; | |
2738 | } | |
2739 | ||
2740 | /* Call the allocation method of the superclass. */ | |
2741 | entry = bfd_hash_newfunc (entry, table, string); | |
2742 | if (entry != NULL) | |
2743 | { | |
cec5225b | 2744 | struct elf_aarch64_stub_hash_entry *eh; |
a06ea964 NC |
2745 | |
2746 | /* Initialize the local fields. */ | |
cec5225b | 2747 | eh = (struct elf_aarch64_stub_hash_entry *) entry; |
4106101c | 2748 | eh->adrp_offset = 0; |
a06ea964 NC |
2749 | eh->stub_sec = NULL; |
2750 | eh->stub_offset = 0; | |
2751 | eh->target_value = 0; | |
2752 | eh->target_section = NULL; | |
2753 | eh->stub_type = aarch64_stub_none; | |
2754 | eh->h = NULL; | |
2755 | eh->id_sec = NULL; | |
2756 | } | |
2757 | ||
2758 | return entry; | |
2759 | } | |
2760 | ||
1419bbe5 WN |
2761 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry |
2762 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
2763 | as global symbol. We reuse indx and dynstr_index for local symbol | |
2764 | hash since they aren't used by global symbols in this backend. */ | |
2765 | ||
2766 | static hashval_t | |
2767 | elfNN_aarch64_local_htab_hash (const void *ptr) | |
2768 | { | |
2769 | struct elf_link_hash_entry *h | |
2770 | = (struct elf_link_hash_entry *) ptr; | |
2771 | return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); | |
2772 | } | |
2773 | ||
2774 | /* Compare local hash entries. */ | |
2775 | ||
2776 | static int | |
2777 | elfNN_aarch64_local_htab_eq (const void *ptr1, const void *ptr2) | |
2778 | { | |
2779 | struct elf_link_hash_entry *h1 | |
2780 | = (struct elf_link_hash_entry *) ptr1; | |
2781 | struct elf_link_hash_entry *h2 | |
2782 | = (struct elf_link_hash_entry *) ptr2; | |
2783 | ||
2784 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
2785 | } | |
2786 | ||
2787 | /* Find and/or create a hash entry for local symbol. */ | |
2788 | ||
2789 | static struct elf_link_hash_entry * | |
2790 | elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table *htab, | |
2791 | bfd *abfd, const Elf_Internal_Rela *rel, | |
0a1b45a2 | 2792 | bool create) |
1419bbe5 WN |
2793 | { |
2794 | struct elf_aarch64_link_hash_entry e, *ret; | |
2795 | asection *sec = abfd->sections; | |
2796 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, | |
2797 | ELFNN_R_SYM (rel->r_info)); | |
2798 | void **slot; | |
2799 | ||
2800 | e.root.indx = sec->id; | |
2801 | e.root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2802 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, | |
2803 | create ? INSERT : NO_INSERT); | |
2804 | ||
2805 | if (!slot) | |
2806 | return NULL; | |
2807 | ||
2808 | if (*slot) | |
2809 | { | |
2810 | ret = (struct elf_aarch64_link_hash_entry *) *slot; | |
2811 | return &ret->root; | |
2812 | } | |
2813 | ||
2814 | ret = (struct elf_aarch64_link_hash_entry *) | |
2815 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, | |
2816 | sizeof (struct elf_aarch64_link_hash_entry)); | |
2817 | if (ret) | |
2818 | { | |
2819 | memset (ret, 0, sizeof (*ret)); | |
2820 | ret->root.indx = sec->id; | |
2821 | ret->root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2822 | ret->root.dynindx = -1; | |
2823 | *slot = ret; | |
2824 | } | |
2825 | return &ret->root; | |
2826 | } | |
a06ea964 NC |
2827 | |
2828 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
2829 | ||
2830 | static void | |
cec5225b | 2831 | elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info, |
a06ea964 NC |
2832 | struct elf_link_hash_entry *dir, |
2833 | struct elf_link_hash_entry *ind) | |
2834 | { | |
cec5225b | 2835 | struct elf_aarch64_link_hash_entry *edir, *eind; |
a06ea964 | 2836 | |
cec5225b YZ |
2837 | edir = (struct elf_aarch64_link_hash_entry *) dir; |
2838 | eind = (struct elf_aarch64_link_hash_entry *) ind; | |
a06ea964 | 2839 | |
a06ea964 NC |
2840 | if (ind->root.type == bfd_link_hash_indirect) |
2841 | { | |
2842 | /* Copy over PLT info. */ | |
2843 | if (dir->got.refcount <= 0) | |
2844 | { | |
2845 | edir->got_type = eind->got_type; | |
2846 | eind->got_type = GOT_UNKNOWN; | |
2847 | } | |
2848 | } | |
2849 | ||
2850 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
2851 | } | |
2852 | ||
823710d5 SN |
2853 | /* Merge non-visibility st_other attributes. */ |
2854 | ||
2855 | static void | |
2856 | elfNN_aarch64_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
5160d0f3 | 2857 | unsigned int st_other, |
0a1b45a2 AM |
2858 | bool definition ATTRIBUTE_UNUSED, |
2859 | bool dynamic ATTRIBUTE_UNUSED) | |
823710d5 | 2860 | { |
5160d0f3 | 2861 | unsigned int isym_sto = st_other & ~ELF_ST_VISIBILITY (-1); |
823710d5 SN |
2862 | unsigned int h_sto = h->other & ~ELF_ST_VISIBILITY (-1); |
2863 | ||
2864 | if (isym_sto == h_sto) | |
2865 | return; | |
2866 | ||
2867 | if (isym_sto & ~STO_AARCH64_VARIANT_PCS) | |
2868 | /* Not fatal, this callback cannot fail. */ | |
2869 | _bfd_error_handler (_("unknown attribute for symbol `%s': 0x%02x"), | |
2870 | h->root.root.string, isym_sto); | |
2871 | ||
2872 | /* Note: Ideally we would warn about any attribute mismatch, but | |
2873 | this api does not allow that without substantial changes. */ | |
2874 | if (isym_sto & STO_AARCH64_VARIANT_PCS) | |
2875 | h->other |= STO_AARCH64_VARIANT_PCS; | |
2876 | } | |
2877 | ||
68faa637 AM |
2878 | /* Destroy an AArch64 elf linker hash table. */ |
2879 | ||
2880 | static void | |
d495ab0d | 2881 | elfNN_aarch64_link_hash_table_free (bfd *obfd) |
68faa637 AM |
2882 | { |
2883 | struct elf_aarch64_link_hash_table *ret | |
d495ab0d | 2884 | = (struct elf_aarch64_link_hash_table *) obfd->link.hash; |
68faa637 AM |
2885 | |
2886 | if (ret->loc_hash_table) | |
2887 | htab_delete (ret->loc_hash_table); | |
2888 | if (ret->loc_hash_memory) | |
2889 | objalloc_free ((struct objalloc *) ret->loc_hash_memory); | |
2890 | ||
2891 | bfd_hash_table_free (&ret->stub_hash_table); | |
d495ab0d | 2892 | _bfd_elf_link_hash_table_free (obfd); |
68faa637 AM |
2893 | } |
2894 | ||
a06ea964 NC |
2895 | /* Create an AArch64 elf linker hash table. */ |
2896 | ||
2897 | static struct bfd_link_hash_table * | |
cec5225b | 2898 | elfNN_aarch64_link_hash_table_create (bfd *abfd) |
a06ea964 | 2899 | { |
cec5225b | 2900 | struct elf_aarch64_link_hash_table *ret; |
986f0783 | 2901 | size_t amt = sizeof (struct elf_aarch64_link_hash_table); |
a06ea964 | 2902 | |
7bf52ea2 | 2903 | ret = bfd_zmalloc (amt); |
a06ea964 NC |
2904 | if (ret == NULL) |
2905 | return NULL; | |
2906 | ||
2907 | if (!_bfd_elf_link_hash_table_init | |
cec5225b YZ |
2908 | (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc, |
2909 | sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA)) | |
a06ea964 NC |
2910 | { |
2911 | free (ret); | |
2912 | return NULL; | |
2913 | } | |
2914 | ||
a06ea964 | 2915 | ret->plt_header_size = PLT_ENTRY_SIZE; |
37c18eed | 2916 | ret->plt0_entry = elfNN_aarch64_small_plt0_entry; |
a06ea964 | 2917 | ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE; |
37c18eed SD |
2918 | ret->plt_entry = elfNN_aarch64_small_plt_entry; |
2919 | ret->tlsdesc_plt_entry_size = PLT_TLSDESC_ENTRY_SIZE; | |
a06ea964 | 2920 | ret->obfd = abfd; |
9bcc30e4 | 2921 | ret->root.tlsdesc_got = (bfd_vma) - 1; |
a06ea964 NC |
2922 | |
2923 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc, | |
cec5225b | 2924 | sizeof (struct elf_aarch64_stub_hash_entry))) |
a06ea964 | 2925 | { |
d495ab0d | 2926 | _bfd_elf_link_hash_table_free (abfd); |
a06ea964 NC |
2927 | return NULL; |
2928 | } | |
2929 | ||
1419bbe5 WN |
2930 | ret->loc_hash_table = htab_try_create (1024, |
2931 | elfNN_aarch64_local_htab_hash, | |
2932 | elfNN_aarch64_local_htab_eq, | |
2933 | NULL); | |
2934 | ret->loc_hash_memory = objalloc_create (); | |
2935 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
2936 | { | |
d495ab0d | 2937 | elfNN_aarch64_link_hash_table_free (abfd); |
1419bbe5 WN |
2938 | return NULL; |
2939 | } | |
d495ab0d | 2940 | ret->root.root.hash_table_free = elfNN_aarch64_link_hash_table_free; |
1419bbe5 | 2941 | |
a06ea964 NC |
2942 | return &ret->root.root; |
2943 | } | |
2944 | ||
1d75a8e2 NC |
2945 | /* Perform relocation R_TYPE. Returns TRUE upon success, FALSE otherwise. */ |
2946 | ||
0a1b45a2 | 2947 | static bool |
a06ea964 NC |
2948 | aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section, |
2949 | bfd_vma offset, bfd_vma value) | |
2950 | { | |
2951 | reloc_howto_type *howto; | |
2952 | bfd_vma place; | |
2953 | ||
0aa13fee | 2954 | howto = elfNN_aarch64_howto_from_type (input_bfd, r_type); |
a06ea964 NC |
2955 | place = (input_section->output_section->vma + input_section->output_offset |
2956 | + offset); | |
caed7120 | 2957 | |
0aa13fee | 2958 | r_type = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
652afeef | 2959 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, r_type, place, |
0a1b45a2 | 2960 | value, 0, false); |
caed7120 YZ |
2961 | return _bfd_aarch64_elf_put_addend (input_bfd, |
2962 | input_section->contents + offset, r_type, | |
1d75a8e2 | 2963 | howto, value) == bfd_reloc_ok; |
a06ea964 NC |
2964 | } |
2965 | ||
cec5225b | 2966 | static enum elf_aarch64_stub_type |
a06ea964 NC |
2967 | aarch64_select_branch_stub (bfd_vma value, bfd_vma place) |
2968 | { | |
2969 | if (aarch64_valid_for_adrp_p (value, place)) | |
2970 | return aarch64_stub_adrp_branch; | |
2971 | return aarch64_stub_long_branch; | |
2972 | } | |
2973 | ||
2974 | /* Determine the type of stub needed, if any, for a call. */ | |
2975 | ||
cec5225b | 2976 | static enum elf_aarch64_stub_type |
9a228467 | 2977 | aarch64_type_of_stub (asection *input_sec, |
a06ea964 | 2978 | const Elf_Internal_Rela *rel, |
f678ded7 | 2979 | asection *sym_sec, |
a06ea964 | 2980 | unsigned char st_type, |
a06ea964 NC |
2981 | bfd_vma destination) |
2982 | { | |
2983 | bfd_vma location; | |
2984 | bfd_signed_vma branch_offset; | |
2985 | unsigned int r_type; | |
cec5225b | 2986 | enum elf_aarch64_stub_type stub_type = aarch64_stub_none; |
a06ea964 | 2987 | |
f678ded7 | 2988 | if (st_type != STT_FUNC |
2f340668 | 2989 | && (sym_sec == input_sec)) |
a06ea964 NC |
2990 | return stub_type; |
2991 | ||
a06ea964 NC |
2992 | /* Determine where the call point is. */ |
2993 | location = (input_sec->output_offset | |
2994 | + input_sec->output_section->vma + rel->r_offset); | |
2995 | ||
2996 | branch_offset = (bfd_signed_vma) (destination - location); | |
2997 | ||
cec5225b | 2998 | r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
2999 | |
3000 | /* We don't want to redirect any old unconditional jump in this way, | |
3001 | only one which is being used for a sibcall, where it is | |
3002 | acceptable for the IP0 and IP1 registers to be clobbered. */ | |
a6bb11b2 | 3003 | if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26)) |
a06ea964 NC |
3004 | && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET |
3005 | || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET)) | |
3006 | { | |
3007 | stub_type = aarch64_stub_long_branch; | |
3008 | } | |
3009 | ||
3010 | return stub_type; | |
3011 | } | |
3012 | ||
3013 | /* Build a name for an entry in the stub hash table. */ | |
3014 | ||
3015 | static char * | |
cec5225b | 3016 | elfNN_aarch64_stub_name (const asection *input_section, |
a06ea964 | 3017 | const asection *sym_sec, |
cec5225b | 3018 | const struct elf_aarch64_link_hash_entry *hash, |
a06ea964 NC |
3019 | const Elf_Internal_Rela *rel) |
3020 | { | |
3021 | char *stub_name; | |
3022 | bfd_size_type len; | |
3023 | ||
3024 | if (hash) | |
3025 | { | |
3026 | len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1; | |
3027 | stub_name = bfd_malloc (len); | |
3028 | if (stub_name != NULL) | |
3029 | snprintf (stub_name, len, "%08x_%s+%" BFD_VMA_FMT "x", | |
3030 | (unsigned int) input_section->id, | |
3031 | hash->root.root.root.string, | |
3032 | rel->r_addend); | |
3033 | } | |
3034 | else | |
3035 | { | |
3036 | len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1; | |
3037 | stub_name = bfd_malloc (len); | |
3038 | if (stub_name != NULL) | |
3039 | snprintf (stub_name, len, "%08x_%x:%x+%" BFD_VMA_FMT "x", | |
3040 | (unsigned int) input_section->id, | |
3041 | (unsigned int) sym_sec->id, | |
cec5225b | 3042 | (unsigned int) ELFNN_R_SYM (rel->r_info), |
a06ea964 NC |
3043 | rel->r_addend); |
3044 | } | |
3045 | ||
3046 | return stub_name; | |
3047 | } | |
3048 | ||
7f784814 JW |
3049 | /* Return TRUE if symbol H should be hashed in the `.gnu.hash' section. For |
3050 | executable PLT slots where the executable never takes the address of those | |
3051 | functions, the function symbols are not added to the hash table. */ | |
3052 | ||
0a1b45a2 | 3053 | static bool |
7f784814 JW |
3054 | elf_aarch64_hash_symbol (struct elf_link_hash_entry *h) |
3055 | { | |
3056 | if (h->plt.offset != (bfd_vma) -1 | |
3057 | && !h->def_regular | |
3058 | && !h->pointer_equality_needed) | |
0a1b45a2 | 3059 | return false; |
7f784814 JW |
3060 | |
3061 | return _bfd_elf_hash_symbol (h); | |
3062 | } | |
3063 | ||
3064 | ||
a06ea964 NC |
3065 | /* Look up an entry in the stub hash. Stub entries are cached because |
3066 | creating the stub name takes a bit of time. */ | |
3067 | ||
cec5225b YZ |
3068 | static struct elf_aarch64_stub_hash_entry * |
3069 | elfNN_aarch64_get_stub_entry (const asection *input_section, | |
a06ea964 NC |
3070 | const asection *sym_sec, |
3071 | struct elf_link_hash_entry *hash, | |
3072 | const Elf_Internal_Rela *rel, | |
cec5225b | 3073 | struct elf_aarch64_link_hash_table *htab) |
a06ea964 | 3074 | { |
cec5225b YZ |
3075 | struct elf_aarch64_stub_hash_entry *stub_entry; |
3076 | struct elf_aarch64_link_hash_entry *h = | |
3077 | (struct elf_aarch64_link_hash_entry *) hash; | |
a06ea964 NC |
3078 | const asection *id_sec; |
3079 | ||
3080 | if ((input_section->flags & SEC_CODE) == 0) | |
3081 | return NULL; | |
3082 | ||
3083 | /* If this input section is part of a group of sections sharing one | |
3084 | stub section, then use the id of the first section in the group. | |
3085 | Stub names need to include a section id, as there may well be | |
3086 | more than one stub used to reach say, printf, and we need to | |
3087 | distinguish between them. */ | |
3088 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3089 | ||
3090 | if (h != NULL && h->stub_cache != NULL | |
3091 | && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec) | |
3092 | { | |
3093 | stub_entry = h->stub_cache; | |
3094 | } | |
3095 | else | |
3096 | { | |
3097 | char *stub_name; | |
3098 | ||
cec5225b | 3099 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel); |
a06ea964 NC |
3100 | if (stub_name == NULL) |
3101 | return NULL; | |
3102 | ||
3103 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
0a1b45a2 | 3104 | stub_name, false, false); |
a06ea964 NC |
3105 | if (h != NULL) |
3106 | h->stub_cache = stub_entry; | |
3107 | ||
3108 | free (stub_name); | |
3109 | } | |
3110 | ||
3111 | return stub_entry; | |
3112 | } | |
3113 | ||
a06ea964 | 3114 | |
66585675 MS |
3115 | /* Create a stub section. */ |
3116 | ||
3117 | static asection * | |
3118 | _bfd_aarch64_create_stub_section (asection *section, | |
3119 | struct elf_aarch64_link_hash_table *htab) | |
3120 | { | |
3121 | size_t namelen; | |
3122 | bfd_size_type len; | |
3123 | char *s_name; | |
3124 | ||
3125 | namelen = strlen (section->name); | |
3126 | len = namelen + sizeof (STUB_SUFFIX); | |
3127 | s_name = bfd_alloc (htab->stub_bfd, len); | |
3128 | if (s_name == NULL) | |
3129 | return NULL; | |
3130 | ||
3131 | memcpy (s_name, section->name, namelen); | |
3132 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
3133 | return (*htab->add_stub_section) (s_name, section); | |
3134 | } | |
3135 | ||
3136 | ||
fc6d53be MS |
3137 | /* Find or create a stub section for a link section. |
3138 | ||
3139 | Fix or create the stub section used to collect stubs attached to | |
3140 | the specified link section. */ | |
3141 | ||
3142 | static asection * | |
3143 | _bfd_aarch64_get_stub_for_link_section (asection *link_section, | |
3144 | struct elf_aarch64_link_hash_table *htab) | |
3145 | { | |
3146 | if (htab->stub_group[link_section->id].stub_sec == NULL) | |
3147 | htab->stub_group[link_section->id].stub_sec | |
3148 | = _bfd_aarch64_create_stub_section (link_section, htab); | |
3149 | return htab->stub_group[link_section->id].stub_sec; | |
3150 | } | |
3151 | ||
3152 | ||
ef857521 MS |
3153 | /* Find or create a stub section in the stub group for an input |
3154 | section. */ | |
3155 | ||
3156 | static asection * | |
3157 | _bfd_aarch64_create_or_find_stub_sec (asection *section, | |
3158 | struct elf_aarch64_link_hash_table *htab) | |
a06ea964 | 3159 | { |
fc6d53be MS |
3160 | asection *link_sec = htab->stub_group[section->id].link_sec; |
3161 | return _bfd_aarch64_get_stub_for_link_section (link_sec, htab); | |
ef857521 MS |
3162 | } |
3163 | ||
3164 | ||
3165 | /* Add a new stub entry in the stub group associated with an input | |
3166 | section to the stub hash. Not all fields of the new stub entry are | |
3167 | initialised. */ | |
3168 | ||
3169 | static struct elf_aarch64_stub_hash_entry * | |
3170 | _bfd_aarch64_add_stub_entry_in_group (const char *stub_name, | |
3171 | asection *section, | |
3172 | struct elf_aarch64_link_hash_table *htab) | |
3173 | { | |
3174 | asection *link_sec; | |
3175 | asection *stub_sec; | |
3176 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
3177 | ||
3178 | link_sec = htab->stub_group[section->id].link_sec; | |
3179 | stub_sec = _bfd_aarch64_create_or_find_stub_sec (section, htab); | |
3180 | ||
a06ea964 NC |
3181 | /* Enter this entry into the linker stub hash table. */ |
3182 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
0a1b45a2 | 3183 | true, false); |
a06ea964 NC |
3184 | if (stub_entry == NULL) |
3185 | { | |
695344c0 | 3186 | /* xgettext:c-format */ |
871b3ab2 | 3187 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
4eca0228 | 3188 | section->owner, stub_name); |
a06ea964 NC |
3189 | return NULL; |
3190 | } | |
3191 | ||
3192 | stub_entry->stub_sec = stub_sec; | |
3193 | stub_entry->stub_offset = 0; | |
3194 | stub_entry->id_sec = link_sec; | |
3195 | ||
3196 | return stub_entry; | |
3197 | } | |
3198 | ||
4106101c MS |
3199 | /* Add a new stub entry in the final stub section to the stub hash. |
3200 | Not all fields of the new stub entry are initialised. */ | |
3201 | ||
3202 | static struct elf_aarch64_stub_hash_entry * | |
3203 | _bfd_aarch64_add_stub_entry_after (const char *stub_name, | |
3204 | asection *link_section, | |
3205 | struct elf_aarch64_link_hash_table *htab) | |
3206 | { | |
3207 | asection *stub_sec; | |
3208 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
3209 | ||
739b5c9c TC |
3210 | stub_sec = NULL; |
3211 | /* Only create the actual stub if we will end up needing it. */ | |
3212 | if (htab->fix_erratum_843419 & ERRAT_ADRP) | |
3213 | stub_sec = _bfd_aarch64_get_stub_for_link_section (link_section, htab); | |
4106101c | 3214 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, |
0a1b45a2 | 3215 | true, false); |
4106101c MS |
3216 | if (stub_entry == NULL) |
3217 | { | |
4eca0228 | 3218 | _bfd_error_handler (_("cannot create stub entry %s"), stub_name); |
4106101c MS |
3219 | return NULL; |
3220 | } | |
3221 | ||
3222 | stub_entry->stub_sec = stub_sec; | |
3223 | stub_entry->stub_offset = 0; | |
3224 | stub_entry->id_sec = link_section; | |
3225 | ||
3226 | return stub_entry; | |
3227 | } | |
3228 | ||
3229 | ||
0a1b45a2 | 3230 | static bool |
a06ea964 | 3231 | aarch64_build_one_stub (struct bfd_hash_entry *gen_entry, |
abf874aa | 3232 | void *in_arg) |
a06ea964 | 3233 | { |
cec5225b | 3234 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
3235 | asection *stub_sec; |
3236 | bfd *stub_bfd; | |
3237 | bfd_byte *loc; | |
3238 | bfd_vma sym_value; | |
68fcca92 JW |
3239 | bfd_vma veneered_insn_loc; |
3240 | bfd_vma veneer_entry_loc; | |
3241 | bfd_signed_vma branch_offset = 0; | |
a06ea964 NC |
3242 | unsigned int template_size; |
3243 | const uint32_t *template; | |
3244 | unsigned int i; | |
abf874aa | 3245 | struct bfd_link_info *info; |
a06ea964 NC |
3246 | |
3247 | /* Massage our args to the form they really have. */ | |
cec5225b | 3248 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 | 3249 | |
abf874aa CL |
3250 | info = (struct bfd_link_info *) in_arg; |
3251 | ||
3252 | /* Fail if the target section could not be assigned to an output | |
3253 | section. The user should fix his linker script. */ | |
3254 | if (stub_entry->target_section->output_section == NULL | |
3255 | && info->non_contiguous_regions) | |
53215f21 CL |
3256 | info->callbacks->einfo (_("%F%P: Could not assign '%pA' to an output section. " |
3257 | "Retry without " | |
3258 | "--enable-non-contiguous-regions.\n"), | |
3259 | stub_entry->target_section); | |
abf874aa | 3260 | |
a06ea964 NC |
3261 | stub_sec = stub_entry->stub_sec; |
3262 | ||
3263 | /* Make a note of the offset within the stubs for this entry. */ | |
3264 | stub_entry->stub_offset = stub_sec->size; | |
3265 | loc = stub_sec->contents + stub_entry->stub_offset; | |
3266 | ||
3267 | stub_bfd = stub_sec->owner; | |
3268 | ||
3269 | /* This is the address of the stub destination. */ | |
3270 | sym_value = (stub_entry->target_value | |
3271 | + stub_entry->target_section->output_offset | |
3272 | + stub_entry->target_section->output_section->vma); | |
3273 | ||
3274 | if (stub_entry->stub_type == aarch64_stub_long_branch) | |
3275 | { | |
3276 | bfd_vma place = (stub_entry->stub_offset + stub_sec->output_section->vma | |
3277 | + stub_sec->output_offset); | |
3278 | ||
3279 | /* See if we can relax the stub. */ | |
3280 | if (aarch64_valid_for_adrp_p (sym_value, place)) | |
3281 | stub_entry->stub_type = aarch64_select_branch_stub (sym_value, place); | |
3282 | } | |
3283 | ||
3284 | switch (stub_entry->stub_type) | |
3285 | { | |
3286 | case aarch64_stub_adrp_branch: | |
3287 | template = aarch64_adrp_branch_stub; | |
3288 | template_size = sizeof (aarch64_adrp_branch_stub); | |
3289 | break; | |
3290 | case aarch64_stub_long_branch: | |
3291 | template = aarch64_long_branch_stub; | |
3292 | template_size = sizeof (aarch64_long_branch_stub); | |
3293 | break; | |
68fcca92 JW |
3294 | case aarch64_stub_erratum_835769_veneer: |
3295 | template = aarch64_erratum_835769_stub; | |
3296 | template_size = sizeof (aarch64_erratum_835769_stub); | |
3297 | break; | |
4106101c MS |
3298 | case aarch64_stub_erratum_843419_veneer: |
3299 | template = aarch64_erratum_843419_stub; | |
3300 | template_size = sizeof (aarch64_erratum_843419_stub); | |
3301 | break; | |
a06ea964 | 3302 | default: |
8e2fe09f | 3303 | abort (); |
a06ea964 NC |
3304 | } |
3305 | ||
3306 | for (i = 0; i < (template_size / sizeof template[0]); i++) | |
3307 | { | |
3308 | bfd_putl32 (template[i], loc); | |
3309 | loc += 4; | |
3310 | } | |
3311 | ||
3312 | template_size = (template_size + 7) & ~7; | |
3313 | stub_sec->size += template_size; | |
3314 | ||
3315 | switch (stub_entry->stub_type) | |
3316 | { | |
3317 | case aarch64_stub_adrp_branch: | |
1d75a8e2 NC |
3318 | if (!aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21), stub_bfd, stub_sec, |
3319 | stub_entry->stub_offset, sym_value)) | |
a06ea964 NC |
3320 | /* The stub would not have been relaxed if the offset was out |
3321 | of range. */ | |
3322 | BFD_FAIL (); | |
3323 | ||
1d75a8e2 NC |
3324 | if (!aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC), stub_bfd, stub_sec, |
3325 | stub_entry->stub_offset + 4, sym_value)) | |
93ca8569 | 3326 | BFD_FAIL (); |
a06ea964 NC |
3327 | break; |
3328 | ||
3329 | case aarch64_stub_long_branch: | |
3330 | /* We want the value relative to the address 12 bytes back from the | |
07d6d2b8 | 3331 | value itself. */ |
1d75a8e2 NC |
3332 | if (!aarch64_relocate (AARCH64_R (PRELNN), stub_bfd, stub_sec, |
3333 | stub_entry->stub_offset + 16, sym_value + 12)) | |
93ca8569 | 3334 | BFD_FAIL (); |
a06ea964 | 3335 | break; |
68fcca92 JW |
3336 | |
3337 | case aarch64_stub_erratum_835769_veneer: | |
3338 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
3339 | + stub_entry->target_section->output_offset | |
3340 | + stub_entry->target_value; | |
3341 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
3342 | + stub_entry->stub_sec->output_offset | |
3343 | + stub_entry->stub_offset; | |
3344 | branch_offset = veneered_insn_loc - veneer_entry_loc; | |
3345 | branch_offset >>= 2; | |
3346 | branch_offset &= 0x3ffffff; | |
3347 | bfd_putl32 (stub_entry->veneered_insn, | |
3348 | stub_sec->contents + stub_entry->stub_offset); | |
3349 | bfd_putl32 (template[1] | branch_offset, | |
3350 | stub_sec->contents + stub_entry->stub_offset + 4); | |
3351 | break; | |
3352 | ||
4106101c | 3353 | case aarch64_stub_erratum_843419_veneer: |
1d75a8e2 NC |
3354 | if (!aarch64_relocate (AARCH64_R (JUMP26), stub_bfd, stub_sec, |
3355 | stub_entry->stub_offset + 4, sym_value + 4)) | |
4106101c MS |
3356 | BFD_FAIL (); |
3357 | break; | |
3358 | ||
a06ea964 | 3359 | default: |
8e2fe09f | 3360 | abort (); |
a06ea964 NC |
3361 | } |
3362 | ||
0a1b45a2 | 3363 | return true; |
a06ea964 NC |
3364 | } |
3365 | ||
3366 | /* As above, but don't actually build the stub. Just bump offset so | |
3367 | we know stub section sizes. */ | |
3368 | ||
0a1b45a2 | 3369 | static bool |
739b5c9c | 3370 | aarch64_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
a06ea964 | 3371 | { |
cec5225b | 3372 | struct elf_aarch64_stub_hash_entry *stub_entry; |
739b5c9c | 3373 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
3374 | int size; |
3375 | ||
3376 | /* Massage our args to the form they really have. */ | |
cec5225b | 3377 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
739b5c9c | 3378 | htab = (struct elf_aarch64_link_hash_table *) in_arg; |
a06ea964 NC |
3379 | |
3380 | switch (stub_entry->stub_type) | |
3381 | { | |
3382 | case aarch64_stub_adrp_branch: | |
3383 | size = sizeof (aarch64_adrp_branch_stub); | |
3384 | break; | |
3385 | case aarch64_stub_long_branch: | |
3386 | size = sizeof (aarch64_long_branch_stub); | |
3387 | break; | |
68fcca92 JW |
3388 | case aarch64_stub_erratum_835769_veneer: |
3389 | size = sizeof (aarch64_erratum_835769_stub); | |
3390 | break; | |
4106101c | 3391 | case aarch64_stub_erratum_843419_veneer: |
739b5c9c TC |
3392 | { |
3393 | if (htab->fix_erratum_843419 == ERRAT_ADR) | |
0a1b45a2 | 3394 | return true; |
739b5c9c TC |
3395 | size = sizeof (aarch64_erratum_843419_stub); |
3396 | } | |
4106101c | 3397 | break; |
a06ea964 | 3398 | default: |
8e2fe09f | 3399 | abort (); |
a06ea964 NC |
3400 | } |
3401 | ||
3402 | size = (size + 7) & ~7; | |
3403 | stub_entry->stub_sec->size += size; | |
0a1b45a2 | 3404 | return true; |
a06ea964 NC |
3405 | } |
3406 | ||
3407 | /* External entry points for sizing and building linker stubs. */ | |
3408 | ||
3409 | /* Set up various things so that we can make a list of input sections | |
3410 | for each output section included in the link. Returns -1 on error, | |
3411 | 0 when no stubs will be needed, and 1 on success. */ | |
3412 | ||
3413 | int | |
cec5225b | 3414 | elfNN_aarch64_setup_section_lists (bfd *output_bfd, |
a06ea964 NC |
3415 | struct bfd_link_info *info) |
3416 | { | |
3417 | bfd *input_bfd; | |
3418 | unsigned int bfd_count; | |
7292b3ac | 3419 | unsigned int top_id, top_index; |
a06ea964 NC |
3420 | asection *section; |
3421 | asection **input_list, **list; | |
986f0783 | 3422 | size_t amt; |
cec5225b YZ |
3423 | struct elf_aarch64_link_hash_table *htab = |
3424 | elf_aarch64_hash_table (info); | |
a06ea964 | 3425 | |
2cc15b10 | 3426 | if (!is_elf_hash_table (&htab->root.root)) |
a06ea964 NC |
3427 | return 0; |
3428 | ||
3429 | /* Count the number of input BFDs and find the top input section id. */ | |
3430 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
c72f2fb2 | 3431 | input_bfd != NULL; input_bfd = input_bfd->link.next) |
a06ea964 NC |
3432 | { |
3433 | bfd_count += 1; | |
3434 | for (section = input_bfd->sections; | |
3435 | section != NULL; section = section->next) | |
3436 | { | |
3437 | if (top_id < section->id) | |
3438 | top_id = section->id; | |
3439 | } | |
3440 | } | |
3441 | htab->bfd_count = bfd_count; | |
3442 | ||
3443 | amt = sizeof (struct map_stub) * (top_id + 1); | |
3444 | htab->stub_group = bfd_zmalloc (amt); | |
3445 | if (htab->stub_group == NULL) | |
3446 | return -1; | |
3447 | ||
3448 | /* We can't use output_bfd->section_count here to find the top output | |
3449 | section index as some sections may have been removed, and | |
3450 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
3451 | for (section = output_bfd->sections, top_index = 0; | |
3452 | section != NULL; section = section->next) | |
3453 | { | |
3454 | if (top_index < section->index) | |
3455 | top_index = section->index; | |
3456 | } | |
3457 | ||
3458 | htab->top_index = top_index; | |
3459 | amt = sizeof (asection *) * (top_index + 1); | |
3460 | input_list = bfd_malloc (amt); | |
3461 | htab->input_list = input_list; | |
3462 | if (input_list == NULL) | |
3463 | return -1; | |
3464 | ||
3465 | /* For sections we aren't interested in, mark their entries with a | |
3466 | value we can check later. */ | |
3467 | list = input_list + top_index; | |
3468 | do | |
3469 | *list = bfd_abs_section_ptr; | |
3470 | while (list-- != input_list); | |
3471 | ||
3472 | for (section = output_bfd->sections; | |
3473 | section != NULL; section = section->next) | |
3474 | { | |
3475 | if ((section->flags & SEC_CODE) != 0) | |
3476 | input_list[section->index] = NULL; | |
3477 | } | |
3478 | ||
3479 | return 1; | |
3480 | } | |
3481 | ||
cec5225b | 3482 | /* Used by elfNN_aarch64_next_input_section and group_sections. */ |
a06ea964 NC |
3483 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3484 | ||
3485 | /* The linker repeatedly calls this function for each input section, | |
3486 | in the order that input sections are linked into output sections. | |
3487 | Build lists of input sections to determine groupings between which | |
3488 | we may insert linker stubs. */ | |
3489 | ||
3490 | void | |
cec5225b | 3491 | elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec) |
a06ea964 | 3492 | { |
cec5225b YZ |
3493 | struct elf_aarch64_link_hash_table *htab = |
3494 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
3495 | |
3496 | if (isec->output_section->index <= htab->top_index) | |
3497 | { | |
3498 | asection **list = htab->input_list + isec->output_section->index; | |
3499 | ||
cff69cf4 | 3500 | if (*list != bfd_abs_section_ptr && (isec->flags & SEC_CODE) != 0) |
a06ea964 NC |
3501 | { |
3502 | /* Steal the link_sec pointer for our list. */ | |
3503 | /* This happens to make the list in reverse order, | |
3504 | which is what we want. */ | |
3505 | PREV_SEC (isec) = *list; | |
3506 | *list = isec; | |
3507 | } | |
3508 | } | |
3509 | } | |
3510 | ||
3511 | /* See whether we can group stub sections together. Grouping stub | |
3512 | sections may result in fewer stubs. More importantly, we need to | |
3513 | put all .init* and .fini* stubs at the beginning of the .init or | |
3514 | .fini output sections respectively, because glibc splits the | |
3515 | _init and _fini functions into multiple parts. Putting a stub in | |
3516 | the middle of a function is not a good idea. */ | |
3517 | ||
3518 | static void | |
cec5225b | 3519 | group_sections (struct elf_aarch64_link_hash_table *htab, |
a06ea964 | 3520 | bfd_size_type stub_group_size, |
0a1b45a2 | 3521 | bool stubs_always_after_branch) |
a06ea964 | 3522 | { |
cff69cf4 | 3523 | asection **list = htab->input_list; |
a06ea964 NC |
3524 | |
3525 | do | |
3526 | { | |
3527 | asection *tail = *list; | |
cff69cf4 | 3528 | asection *head; |
a06ea964 NC |
3529 | |
3530 | if (tail == bfd_abs_section_ptr) | |
3531 | continue; | |
3532 | ||
cff69cf4 WD |
3533 | /* Reverse the list: we must avoid placing stubs at the |
3534 | beginning of the section because the beginning of the text | |
3535 | section may be required for an interrupt vector in bare metal | |
3536 | code. */ | |
3537 | #define NEXT_SEC PREV_SEC | |
3538 | head = NULL; | |
a06ea964 | 3539 | while (tail != NULL) |
cff69cf4 WD |
3540 | { |
3541 | /* Pop from tail. */ | |
3542 | asection *item = tail; | |
3543 | tail = PREV_SEC (item); | |
3544 | ||
3545 | /* Push on head. */ | |
3546 | NEXT_SEC (item) = head; | |
3547 | head = item; | |
3548 | } | |
3549 | ||
3550 | while (head != NULL) | |
a06ea964 NC |
3551 | { |
3552 | asection *curr; | |
cff69cf4 WD |
3553 | asection *next; |
3554 | bfd_vma stub_group_start = head->output_offset; | |
3555 | bfd_vma end_of_next; | |
a06ea964 | 3556 | |
cff69cf4 WD |
3557 | curr = head; |
3558 | while (NEXT_SEC (curr) != NULL) | |
3559 | { | |
3560 | next = NEXT_SEC (curr); | |
3561 | end_of_next = next->output_offset + next->size; | |
3562 | if (end_of_next - stub_group_start >= stub_group_size) | |
3563 | /* End of NEXT is too far from start, so stop. */ | |
3564 | break; | |
3565 | /* Add NEXT to the group. */ | |
3566 | curr = next; | |
3567 | } | |
a06ea964 | 3568 | |
cff69cf4 | 3569 | /* OK, the size from the start to the start of CURR is less |
a06ea964 | 3570 | than stub_group_size and thus can be handled by one stub |
cff69cf4 | 3571 | section. (Or the head section is itself larger than |
a06ea964 NC |
3572 | stub_group_size, in which case we may be toast.) |
3573 | We should really be keeping track of the total size of | |
3574 | stubs added here, as stubs contribute to the final output | |
3575 | section size. */ | |
3576 | do | |
3577 | { | |
cff69cf4 | 3578 | next = NEXT_SEC (head); |
a06ea964 | 3579 | /* Set up this stub group. */ |
cff69cf4 | 3580 | htab->stub_group[head->id].link_sec = curr; |
a06ea964 | 3581 | } |
cff69cf4 | 3582 | while (head != curr && (head = next) != NULL); |
a06ea964 NC |
3583 | |
3584 | /* But wait, there's more! Input sections up to stub_group_size | |
cff69cf4 WD |
3585 | bytes after the stub section can be handled by it too. */ |
3586 | if (!stubs_always_after_branch) | |
a06ea964 | 3587 | { |
cff69cf4 WD |
3588 | stub_group_start = curr->output_offset + curr->size; |
3589 | ||
3590 | while (next != NULL) | |
a06ea964 | 3591 | { |
cff69cf4 WD |
3592 | end_of_next = next->output_offset + next->size; |
3593 | if (end_of_next - stub_group_start >= stub_group_size) | |
3594 | /* End of NEXT is too far from stubs, so stop. */ | |
3595 | break; | |
3596 | /* Add NEXT to the stub group. */ | |
3597 | head = next; | |
3598 | next = NEXT_SEC (head); | |
3599 | htab->stub_group[head->id].link_sec = curr; | |
a06ea964 NC |
3600 | } |
3601 | } | |
cff69cf4 | 3602 | head = next; |
a06ea964 NC |
3603 | } |
3604 | } | |
cff69cf4 | 3605 | while (list++ != htab->input_list + htab->top_index); |
a06ea964 NC |
3606 | |
3607 | free (htab->input_list); | |
3608 | } | |
3609 | ||
cff69cf4 | 3610 | #undef PREV_SEC |
a06ea964 NC |
3611 | #undef PREV_SEC |
3612 | ||
68fcca92 JW |
3613 | #define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1)) |
3614 | ||
3615 | #define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5) | |
3616 | #define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5) | |
3617 | #define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5) | |
3618 | #define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5) | |
3619 | #define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5) | |
3620 | #define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5) | |
3621 | ||
3622 | #define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000) | |
3623 | #define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1) | |
3624 | #define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3) | |
3625 | #define AARCH64_ZR 0x1f | |
3626 | ||
3627 | /* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for | |
3628 | LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */ | |
3629 | ||
3630 | #define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1) | |
3631 | #define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000) | |
3632 | #define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000) | |
3633 | #define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000) | |
3634 | #define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000) | |
3635 | #define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000) | |
3636 | #define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000) | |
3637 | #define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000) | |
3638 | #define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000) | |
3639 | #define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400) | |
3640 | #define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800) | |
3641 | #define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00) | |
3642 | #define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800) | |
3643 | #define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000) | |
3644 | #define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000) | |
3645 | #define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000) | |
3646 | #define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000) | |
3647 | #define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000) | |
3648 | ||
3d14faea MS |
3649 | /* Classify an INSN if it is indeed a load/store. |
3650 | ||
3651 | Return TRUE if INSN is a LD/ST instruction otherwise return FALSE. | |
3652 | ||
3653 | For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2 | |
3654 | is set equal to RT. | |
3655 | ||
2d0ca824 | 3656 | For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. */ |
68fcca92 | 3657 | |
0a1b45a2 | 3658 | static bool |
3d14faea | 3659 | aarch64_mem_op_p (uint32_t insn, unsigned int *rt, unsigned int *rt2, |
0a1b45a2 | 3660 | bool *pair, bool *load) |
68fcca92 JW |
3661 | { |
3662 | uint32_t opcode; | |
3663 | unsigned int r; | |
3664 | uint32_t opc = 0; | |
3665 | uint32_t v = 0; | |
3666 | uint32_t opc_v = 0; | |
3667 | ||
de194d85 | 3668 | /* Bail out quickly if INSN doesn't fall into the load-store |
68fcca92 JW |
3669 | encoding space. */ |
3670 | if (!AARCH64_LDST (insn)) | |
0a1b45a2 | 3671 | return false; |
68fcca92 | 3672 | |
0a1b45a2 AM |
3673 | *pair = false; |
3674 | *load = false; | |
68fcca92 JW |
3675 | if (AARCH64_LDST_EX (insn)) |
3676 | { | |
3677 | *rt = AARCH64_RT (insn); | |
3d14faea | 3678 | *rt2 = *rt; |
68fcca92 | 3679 | if (AARCH64_BIT (insn, 21) == 1) |
07d6d2b8 | 3680 | { |
0a1b45a2 | 3681 | *pair = true; |
3d14faea | 3682 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
3683 | } |
3684 | *load = AARCH64_LD (insn); | |
0a1b45a2 | 3685 | return true; |
68fcca92 JW |
3686 | } |
3687 | else if (AARCH64_LDST_NAP (insn) | |
3688 | || AARCH64_LDSTP_PI (insn) | |
3689 | || AARCH64_LDSTP_O (insn) | |
3690 | || AARCH64_LDSTP_PRE (insn)) | |
3691 | { | |
0a1b45a2 | 3692 | *pair = true; |
68fcca92 | 3693 | *rt = AARCH64_RT (insn); |
3d14faea | 3694 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 | 3695 | *load = AARCH64_LD (insn); |
0a1b45a2 | 3696 | return true; |
68fcca92 JW |
3697 | } |
3698 | else if (AARCH64_LDST_PCREL (insn) | |
3699 | || AARCH64_LDST_UI (insn) | |
3700 | || AARCH64_LDST_PIIMM (insn) | |
3701 | || AARCH64_LDST_U (insn) | |
3702 | || AARCH64_LDST_PREIMM (insn) | |
3703 | || AARCH64_LDST_RO (insn) | |
3704 | || AARCH64_LDST_UIMM (insn)) | |
3705 | { | |
3706 | *rt = AARCH64_RT (insn); | |
3d14faea | 3707 | *rt2 = *rt; |
68fcca92 | 3708 | if (AARCH64_LDST_PCREL (insn)) |
0a1b45a2 | 3709 | *load = true; |
68fcca92 JW |
3710 | opc = AARCH64_BITS (insn, 22, 2); |
3711 | v = AARCH64_BIT (insn, 26); | |
3712 | opc_v = opc | (v << 2); | |
3713 | *load = (opc_v == 1 || opc_v == 2 || opc_v == 3 | |
3714 | || opc_v == 5 || opc_v == 7); | |
0a1b45a2 | 3715 | return true; |
68fcca92 JW |
3716 | } |
3717 | else if (AARCH64_LDST_SIMD_M (insn) | |
3718 | || AARCH64_LDST_SIMD_M_PI (insn)) | |
3719 | { | |
3720 | *rt = AARCH64_RT (insn); | |
3721 | *load = AARCH64_BIT (insn, 22); | |
3722 | opcode = (insn >> 12) & 0xf; | |
3723 | switch (opcode) | |
3724 | { | |
3725 | case 0: | |
3726 | case 2: | |
3d14faea | 3727 | *rt2 = *rt + 3; |
68fcca92 JW |
3728 | break; |
3729 | ||
3730 | case 4: | |
3731 | case 6: | |
3d14faea | 3732 | *rt2 = *rt + 2; |
68fcca92 JW |
3733 | break; |
3734 | ||
3735 | case 7: | |
3d14faea | 3736 | *rt2 = *rt; |
68fcca92 JW |
3737 | break; |
3738 | ||
3739 | case 8: | |
3740 | case 10: | |
3d14faea | 3741 | *rt2 = *rt + 1; |
68fcca92 JW |
3742 | break; |
3743 | ||
3744 | default: | |
0a1b45a2 | 3745 | return false; |
68fcca92 | 3746 | } |
0a1b45a2 | 3747 | return true; |
68fcca92 JW |
3748 | } |
3749 | else if (AARCH64_LDST_SIMD_S (insn) | |
3750 | || AARCH64_LDST_SIMD_S_PI (insn)) | |
3751 | { | |
3752 | *rt = AARCH64_RT (insn); | |
3753 | r = (insn >> 21) & 1; | |
3754 | *load = AARCH64_BIT (insn, 22); | |
3755 | opcode = (insn >> 13) & 0x7; | |
3756 | switch (opcode) | |
3757 | { | |
3758 | case 0: | |
3759 | case 2: | |
3760 | case 4: | |
3d14faea | 3761 | *rt2 = *rt + r; |
68fcca92 JW |
3762 | break; |
3763 | ||
3764 | case 1: | |
3765 | case 3: | |
3766 | case 5: | |
3d14faea | 3767 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
3768 | break; |
3769 | ||
3770 | case 6: | |
3d14faea | 3771 | *rt2 = *rt + r; |
68fcca92 JW |
3772 | break; |
3773 | ||
3774 | case 7: | |
3d14faea | 3775 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
3776 | break; |
3777 | ||
3778 | default: | |
0a1b45a2 | 3779 | return false; |
68fcca92 | 3780 | } |
0a1b45a2 | 3781 | return true; |
68fcca92 JW |
3782 | } |
3783 | ||
0a1b45a2 | 3784 | return false; |
68fcca92 JW |
3785 | } |
3786 | ||
3787 | /* Return TRUE if INSN is multiply-accumulate. */ | |
3788 | ||
0a1b45a2 | 3789 | static bool |
68fcca92 JW |
3790 | aarch64_mlxl_p (uint32_t insn) |
3791 | { | |
3792 | uint32_t op31 = AARCH64_OP31 (insn); | |
3793 | ||
3794 | if (AARCH64_MAC (insn) | |
3795 | && (op31 == 0 || op31 == 1 || op31 == 5) | |
3796 | /* Exclude MUL instructions which are encoded as a multiple accumulate | |
3797 | with RA = XZR. */ | |
3798 | && AARCH64_RA (insn) != AARCH64_ZR) | |
0a1b45a2 | 3799 | return true; |
68fcca92 | 3800 | |
0a1b45a2 | 3801 | return false; |
68fcca92 JW |
3802 | } |
3803 | ||
3804 | /* Some early revisions of the Cortex-A53 have an erratum (835769) whereby | |
3805 | it is possible for a 64-bit multiply-accumulate instruction to generate an | |
3806 | incorrect result. The details are quite complex and hard to | |
3807 | determine statically, since branches in the code may exist in some | |
3808 | circumstances, but all cases end with a memory (load, store, or | |
3809 | prefetch) instruction followed immediately by the multiply-accumulate | |
3810 | operation. We employ a linker patching technique, by moving the potentially | |
3811 | affected multiply-accumulate instruction into a patch region and replacing | |
3812 | the original instruction with a branch to the patch. This function checks | |
3813 | if INSN_1 is the memory operation followed by a multiply-accumulate | |
3814 | operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE | |
3815 | if INSN_1 and INSN_2 are safe. */ | |
3816 | ||
0a1b45a2 | 3817 | static bool |
68fcca92 JW |
3818 | aarch64_erratum_sequence (uint32_t insn_1, uint32_t insn_2) |
3819 | { | |
3820 | uint32_t rt; | |
3d14faea | 3821 | uint32_t rt2; |
68fcca92 JW |
3822 | uint32_t rn; |
3823 | uint32_t rm; | |
3824 | uint32_t ra; | |
0a1b45a2 AM |
3825 | bool pair; |
3826 | bool load; | |
68fcca92 JW |
3827 | |
3828 | if (aarch64_mlxl_p (insn_2) | |
3d14faea | 3829 | && aarch64_mem_op_p (insn_1, &rt, &rt2, &pair, &load)) |
68fcca92 JW |
3830 | { |
3831 | /* Any SIMD memory op is independent of the subsequent MLA | |
3832 | by definition of the erratum. */ | |
3833 | if (AARCH64_BIT (insn_1, 26)) | |
0a1b45a2 | 3834 | return true; |
68fcca92 JW |
3835 | |
3836 | /* If not SIMD, check for integer memory ops and MLA relationship. */ | |
3837 | rn = AARCH64_RN (insn_2); | |
3838 | ra = AARCH64_RA (insn_2); | |
3839 | rm = AARCH64_RM (insn_2); | |
3840 | ||
3841 | /* If this is a load and there's a true(RAW) dependency, we are safe | |
3842 | and this is not an erratum sequence. */ | |
3843 | if (load && | |
3844 | (rt == rn || rt == rm || rt == ra | |
3d14faea | 3845 | || (pair && (rt2 == rn || rt2 == rm || rt2 == ra)))) |
0a1b45a2 | 3846 | return false; |
68fcca92 JW |
3847 | |
3848 | /* We conservatively put out stubs for all other cases (including | |
3849 | writebacks). */ | |
0a1b45a2 | 3850 | return true; |
68fcca92 JW |
3851 | } |
3852 | ||
0a1b45a2 | 3853 | return false; |
68fcca92 JW |
3854 | } |
3855 | ||
520c7b56 JW |
3856 | /* Used to order a list of mapping symbols by address. */ |
3857 | ||
3858 | static int | |
3859 | elf_aarch64_compare_mapping (const void *a, const void *b) | |
3860 | { | |
3861 | const elf_aarch64_section_map *amap = (const elf_aarch64_section_map *) a; | |
3862 | const elf_aarch64_section_map *bmap = (const elf_aarch64_section_map *) b; | |
3863 | ||
3864 | if (amap->vma > bmap->vma) | |
3865 | return 1; | |
3866 | else if (amap->vma < bmap->vma) | |
3867 | return -1; | |
3868 | else if (amap->type > bmap->type) | |
3869 | /* Ensure results do not depend on the host qsort for objects with | |
3870 | multiple mapping symbols at the same address by sorting on type | |
3871 | after vma. */ | |
3872 | return 1; | |
3873 | else if (amap->type < bmap->type) | |
3874 | return -1; | |
3875 | else | |
3876 | return 0; | |
3877 | } | |
3878 | ||
2144188d | 3879 | |
35fee8b7 MS |
3880 | static char * |
3881 | _bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes) | |
3882 | { | |
3883 | char *stub_name = (char *) bfd_malloc | |
3884 | (strlen ("__erratum_835769_veneer_") + 16); | |
bb69498c NC |
3885 | if (stub_name != NULL) |
3886 | sprintf (stub_name,"__erratum_835769_veneer_%d", num_fixes); | |
35fee8b7 MS |
3887 | return stub_name; |
3888 | } | |
3889 | ||
4106101c | 3890 | /* Scan for Cortex-A53 erratum 835769 sequence. |
2144188d MS |
3891 | |
3892 | Return TRUE else FALSE on abnormal termination. */ | |
3893 | ||
0a1b45a2 | 3894 | static bool |
5421cc6e MS |
3895 | _bfd_aarch64_erratum_835769_scan (bfd *input_bfd, |
3896 | struct bfd_link_info *info, | |
3897 | unsigned int *num_fixes_p) | |
68fcca92 JW |
3898 | { |
3899 | asection *section; | |
3900 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
68fcca92 | 3901 | unsigned int num_fixes = *num_fixes_p; |
68fcca92 JW |
3902 | |
3903 | if (htab == NULL) | |
0a1b45a2 | 3904 | return true; |
68fcca92 JW |
3905 | |
3906 | for (section = input_bfd->sections; | |
3907 | section != NULL; | |
3908 | section = section->next) | |
3909 | { | |
3910 | bfd_byte *contents = NULL; | |
3911 | struct _aarch64_elf_section_data *sec_data; | |
3912 | unsigned int span; | |
3913 | ||
3914 | if (elf_section_type (section) != SHT_PROGBITS | |
3915 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
3916 | || (section->flags & SEC_EXCLUDE) != 0 | |
3917 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
3918 | || (section->output_section == bfd_abs_section_ptr)) | |
3919 | continue; | |
3920 | ||
3921 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
3922 | contents = elf_section_data (section)->this_hdr.contents; | |
3923 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
0a1b45a2 | 3924 | return false; |
68fcca92 JW |
3925 | |
3926 | sec_data = elf_aarch64_section_data (section); | |
520c7b56 | 3927 | |
ccf61261 NC |
3928 | if (sec_data->mapcount) |
3929 | qsort (sec_data->map, sec_data->mapcount, | |
3930 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
520c7b56 | 3931 | |
68fcca92 JW |
3932 | for (span = 0; span < sec_data->mapcount; span++) |
3933 | { | |
3934 | unsigned int span_start = sec_data->map[span].vma; | |
3935 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
3936 | ? sec_data->map[0].vma + section->size | |
3937 | : sec_data->map[span + 1].vma); | |
3938 | unsigned int i; | |
3939 | char span_type = sec_data->map[span].type; | |
3940 | ||
3941 | if (span_type == 'd') | |
3942 | continue; | |
3943 | ||
3944 | for (i = span_start; i + 4 < span_end; i += 4) | |
3945 | { | |
3946 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
3947 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
3948 | ||
3949 | if (aarch64_erratum_sequence (insn_1, insn_2)) | |
3950 | { | |
5421cc6e | 3951 | struct elf_aarch64_stub_hash_entry *stub_entry; |
35fee8b7 MS |
3952 | char *stub_name = _bfd_aarch64_erratum_835769_stub_name (num_fixes); |
3953 | if (! stub_name) | |
0a1b45a2 | 3954 | return false; |
68fcca92 | 3955 | |
5421cc6e MS |
3956 | stub_entry = _bfd_aarch64_add_stub_entry_in_group (stub_name, |
3957 | section, | |
3958 | htab); | |
3959 | if (! stub_entry) | |
0a1b45a2 | 3960 | return false; |
68fcca92 | 3961 | |
5421cc6e MS |
3962 | stub_entry->stub_type = aarch64_stub_erratum_835769_veneer; |
3963 | stub_entry->target_section = section; | |
3964 | stub_entry->target_value = i + 4; | |
3965 | stub_entry->veneered_insn = insn_2; | |
3966 | stub_entry->output_name = stub_name; | |
68fcca92 JW |
3967 | num_fixes++; |
3968 | } | |
3969 | } | |
3970 | } | |
3971 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
3972 | free (contents); | |
3973 | } | |
3974 | ||
357d1523 MS |
3975 | *num_fixes_p = num_fixes; |
3976 | ||
0a1b45a2 | 3977 | return true; |
68fcca92 JW |
3978 | } |
3979 | ||
13f622ec | 3980 | |
4106101c MS |
3981 | /* Test if instruction INSN is ADRP. */ |
3982 | ||
0a1b45a2 | 3983 | static bool |
4106101c MS |
3984 | _bfd_aarch64_adrp_p (uint32_t insn) |
3985 | { | |
9fca35fc | 3986 | return ((insn & AARCH64_ADRP_OP_MASK) == AARCH64_ADRP_OP); |
4106101c MS |
3987 | } |
3988 | ||
3989 | ||
3990 | /* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */ | |
3991 | ||
0a1b45a2 | 3992 | static bool |
4106101c MS |
3993 | _bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1, uint32_t insn_2, |
3994 | uint32_t insn_3) | |
3995 | { | |
3996 | uint32_t rt; | |
3997 | uint32_t rt2; | |
0a1b45a2 AM |
3998 | bool pair; |
3999 | bool load; | |
4106101c MS |
4000 | |
4001 | return (aarch64_mem_op_p (insn_2, &rt, &rt2, &pair, &load) | |
4002 | && (!pair | |
4003 | || (pair && !load)) | |
4004 | && AARCH64_LDST_UIMM (insn_3) | |
4005 | && AARCH64_RN (insn_3) == AARCH64_RD (insn_1)); | |
4006 | } | |
4007 | ||
4008 | ||
4009 | /* Test for the presence of Cortex-A53 erratum 843419 instruction sequence. | |
4010 | ||
4011 | Return TRUE if section CONTENTS at offset I contains one of the | |
4012 | erratum 843419 sequences, otherwise return FALSE. If a sequence is | |
4013 | seen set P_VENEER_I to the offset of the final LOAD/STORE | |
4014 | instruction in the sequence. | |
4015 | */ | |
4016 | ||
0a1b45a2 | 4017 | static bool |
4106101c MS |
4018 | _bfd_aarch64_erratum_843419_p (bfd_byte *contents, bfd_vma vma, |
4019 | bfd_vma i, bfd_vma span_end, | |
4020 | bfd_vma *p_veneer_i) | |
4021 | { | |
4022 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
4023 | ||
4024 | if (!_bfd_aarch64_adrp_p (insn_1)) | |
0a1b45a2 | 4025 | return false; |
4106101c MS |
4026 | |
4027 | if (span_end < i + 12) | |
0a1b45a2 | 4028 | return false; |
4106101c MS |
4029 | |
4030 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
4031 | uint32_t insn_3 = bfd_getl32 (contents + i + 8); | |
4032 | ||
4033 | if ((vma & 0xfff) != 0xff8 && (vma & 0xfff) != 0xffc) | |
0a1b45a2 | 4034 | return false; |
4106101c MS |
4035 | |
4036 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_3)) | |
4037 | { | |
4038 | *p_veneer_i = i + 8; | |
0a1b45a2 | 4039 | return true; |
4106101c MS |
4040 | } |
4041 | ||
4042 | if (span_end < i + 16) | |
0a1b45a2 | 4043 | return false; |
4106101c MS |
4044 | |
4045 | uint32_t insn_4 = bfd_getl32 (contents + i + 12); | |
4046 | ||
4047 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_4)) | |
4048 | { | |
4049 | *p_veneer_i = i + 12; | |
0a1b45a2 | 4050 | return true; |
4106101c MS |
4051 | } |
4052 | ||
0a1b45a2 | 4053 | return false; |
4106101c MS |
4054 | } |
4055 | ||
4056 | ||
13f622ec MS |
4057 | /* Resize all stub sections. */ |
4058 | ||
4059 | static void | |
4060 | _bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table *htab) | |
4061 | { | |
4062 | asection *section; | |
4063 | ||
4064 | /* OK, we've added some stubs. Find out the new size of the | |
4065 | stub sections. */ | |
4066 | for (section = htab->stub_bfd->sections; | |
4067 | section != NULL; section = section->next) | |
4068 | { | |
4069 | /* Ignore non-stub sections. */ | |
4070 | if (!strstr (section->name, STUB_SUFFIX)) | |
4071 | continue; | |
4072 | section->size = 0; | |
4073 | } | |
4074 | ||
4075 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab); | |
13f622ec | 4076 | |
61865519 MS |
4077 | for (section = htab->stub_bfd->sections; |
4078 | section != NULL; section = section->next) | |
4079 | { | |
4080 | if (!strstr (section->name, STUB_SUFFIX)) | |
4081 | continue; | |
4082 | ||
9a2ebffd JW |
4083 | /* Add space for a branch. Add 8 bytes to keep section 8 byte aligned, |
4084 | as long branch stubs contain a 64-bit address. */ | |
61865519 | 4085 | if (section->size) |
9a2ebffd | 4086 | section->size += 8; |
4106101c MS |
4087 | |
4088 | /* Ensure all stub sections have a size which is a multiple of | |
4089 | 4096. This is important in order to ensure that the insertion | |
4090 | of stub sections does not in itself move existing code around | |
739b5c9c TC |
4091 | in such a way that new errata sequences are created. We only do this |
4092 | when the ADRP workaround is enabled. If only the ADR workaround is | |
4093 | enabled then the stubs workaround won't ever be used. */ | |
4094 | if (htab->fix_erratum_843419 & ERRAT_ADRP) | |
4106101c MS |
4095 | if (section->size) |
4096 | section->size = BFD_ALIGN (section->size, 0x1000); | |
4097 | } | |
4098 | } | |
4099 | ||
9a2ebffd | 4100 | /* Construct an erratum 843419 workaround stub name. */ |
4106101c MS |
4101 | |
4102 | static char * | |
4103 | _bfd_aarch64_erratum_843419_stub_name (asection *input_section, | |
4104 | bfd_vma offset) | |
4105 | { | |
4106 | const bfd_size_type len = 8 + 4 + 1 + 8 + 1 + 16 + 1; | |
4107 | char *stub_name = bfd_malloc (len); | |
4108 | ||
4109 | if (stub_name != NULL) | |
4110 | snprintf (stub_name, len, "e843419@%04x_%08x_%" BFD_VMA_FMT "x", | |
4111 | input_section->owner->id, | |
4112 | input_section->id, | |
4113 | offset); | |
4114 | return stub_name; | |
4115 | } | |
4116 | ||
4117 | /* Build a stub_entry structure describing an 843419 fixup. | |
4118 | ||
4119 | The stub_entry constructed is populated with the bit pattern INSN | |
4120 | of the instruction located at OFFSET within input SECTION. | |
4121 | ||
4122 | Returns TRUE on success. */ | |
4123 | ||
0a1b45a2 | 4124 | static bool |
4106101c MS |
4125 | _bfd_aarch64_erratum_843419_fixup (uint32_t insn, |
4126 | bfd_vma adrp_offset, | |
4127 | bfd_vma ldst_offset, | |
4128 | asection *section, | |
4129 | struct bfd_link_info *info) | |
4130 | { | |
4131 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
4132 | char *stub_name; | |
4133 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
4134 | ||
4135 | stub_name = _bfd_aarch64_erratum_843419_stub_name (section, ldst_offset); | |
bb69498c | 4136 | if (stub_name == NULL) |
0a1b45a2 | 4137 | return false; |
4106101c | 4138 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, |
0a1b45a2 | 4139 | false, false); |
4106101c MS |
4140 | if (stub_entry) |
4141 | { | |
4142 | free (stub_name); | |
0a1b45a2 | 4143 | return true; |
4106101c MS |
4144 | } |
4145 | ||
4146 | /* We always place an 843419 workaround veneer in the stub section | |
4147 | attached to the input section in which an erratum sequence has | |
4148 | been found. This ensures that later in the link process (in | |
4149 | elfNN_aarch64_write_section) when we copy the veneered | |
4150 | instruction from the input section into the stub section the | |
4151 | copied instruction will have had any relocations applied to it. | |
4152 | If we placed workaround veneers in any other stub section then we | |
4153 | could not assume that all relocations have been processed on the | |
4154 | corresponding input section at the point we output the stub | |
bb69498c | 4155 | section. */ |
4106101c MS |
4156 | |
4157 | stub_entry = _bfd_aarch64_add_stub_entry_after (stub_name, section, htab); | |
4158 | if (stub_entry == NULL) | |
4159 | { | |
4160 | free (stub_name); | |
0a1b45a2 | 4161 | return false; |
4106101c MS |
4162 | } |
4163 | ||
4164 | stub_entry->adrp_offset = adrp_offset; | |
4165 | stub_entry->target_value = ldst_offset; | |
4166 | stub_entry->target_section = section; | |
4167 | stub_entry->stub_type = aarch64_stub_erratum_843419_veneer; | |
4168 | stub_entry->veneered_insn = insn; | |
4169 | stub_entry->output_name = stub_name; | |
4170 | ||
0a1b45a2 | 4171 | return true; |
4106101c MS |
4172 | } |
4173 | ||
4174 | ||
4175 | /* Scan an input section looking for the signature of erratum 843419. | |
4176 | ||
4177 | Scans input SECTION in INPUT_BFD looking for erratum 843419 | |
4178 | signatures, for each signature found a stub_entry is created | |
4179 | describing the location of the erratum for subsequent fixup. | |
4180 | ||
4181 | Return TRUE on successful scan, FALSE on failure to scan. | |
4182 | */ | |
4183 | ||
0a1b45a2 | 4184 | static bool |
4106101c MS |
4185 | _bfd_aarch64_erratum_843419_scan (bfd *input_bfd, asection *section, |
4186 | struct bfd_link_info *info) | |
4187 | { | |
4188 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
4189 | ||
4190 | if (htab == NULL) | |
0a1b45a2 | 4191 | return true; |
4106101c MS |
4192 | |
4193 | if (elf_section_type (section) != SHT_PROGBITS | |
4194 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
4195 | || (section->flags & SEC_EXCLUDE) != 0 | |
4196 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
4197 | || (section->output_section == bfd_abs_section_ptr)) | |
0a1b45a2 | 4198 | return true; |
4106101c MS |
4199 | |
4200 | do | |
4201 | { | |
4202 | bfd_byte *contents = NULL; | |
4203 | struct _aarch64_elf_section_data *sec_data; | |
4204 | unsigned int span; | |
4205 | ||
4206 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
4207 | contents = elf_section_data (section)->this_hdr.contents; | |
4208 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
0a1b45a2 | 4209 | return false; |
4106101c MS |
4210 | |
4211 | sec_data = elf_aarch64_section_data (section); | |
4212 | ||
ccf61261 NC |
4213 | if (sec_data->mapcount) |
4214 | qsort (sec_data->map, sec_data->mapcount, | |
4215 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
4106101c MS |
4216 | |
4217 | for (span = 0; span < sec_data->mapcount; span++) | |
4218 | { | |
4219 | unsigned int span_start = sec_data->map[span].vma; | |
4220 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
4221 | ? sec_data->map[0].vma + section->size | |
4222 | : sec_data->map[span + 1].vma); | |
4223 | unsigned int i; | |
4224 | char span_type = sec_data->map[span].type; | |
4225 | ||
4226 | if (span_type == 'd') | |
4227 | continue; | |
4228 | ||
4229 | for (i = span_start; i + 8 < span_end; i += 4) | |
4230 | { | |
4231 | bfd_vma vma = (section->output_section->vma | |
4232 | + section->output_offset | |
4233 | + i); | |
4234 | bfd_vma veneer_i; | |
4235 | ||
4236 | if (_bfd_aarch64_erratum_843419_p | |
4237 | (contents, vma, i, span_end, &veneer_i)) | |
4238 | { | |
4239 | uint32_t insn = bfd_getl32 (contents + veneer_i); | |
4240 | ||
4241 | if (!_bfd_aarch64_erratum_843419_fixup (insn, i, veneer_i, | |
4242 | section, info)) | |
0a1b45a2 | 4243 | return false; |
4106101c MS |
4244 | } |
4245 | } | |
4246 | } | |
4247 | ||
4248 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
4249 | free (contents); | |
61865519 | 4250 | } |
4106101c MS |
4251 | while (0); |
4252 | ||
0a1b45a2 | 4253 | return true; |
61865519 | 4254 | } |
13f622ec | 4255 | |
4106101c | 4256 | |
a06ea964 NC |
4257 | /* Determine and set the size of the stub section for a final link. |
4258 | ||
4259 | The basic idea here is to examine all the relocations looking for | |
4260 | PC-relative calls to a target that is unreachable with a "bl" | |
4261 | instruction. */ | |
4262 | ||
0a1b45a2 | 4263 | bool |
cec5225b | 4264 | elfNN_aarch64_size_stubs (bfd *output_bfd, |
a06ea964 NC |
4265 | bfd *stub_bfd, |
4266 | struct bfd_link_info *info, | |
4267 | bfd_signed_vma group_size, | |
4268 | asection * (*add_stub_section) (const char *, | |
4269 | asection *), | |
4270 | void (*layout_sections_again) (void)) | |
4271 | { | |
4272 | bfd_size_type stub_group_size; | |
0a1b45a2 AM |
4273 | bool stubs_always_before_branch; |
4274 | bool stub_changed = false; | |
cec5225b | 4275 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); |
68fcca92 | 4276 | unsigned int num_erratum_835769_fixes = 0; |
a06ea964 NC |
4277 | |
4278 | /* Propagate mach to stub bfd, because it may not have been | |
4279 | finalized when we created stub_bfd. */ | |
4280 | bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd), | |
4281 | bfd_get_mach (output_bfd)); | |
4282 | ||
4283 | /* Stash our params away. */ | |
4284 | htab->stub_bfd = stub_bfd; | |
4285 | htab->add_stub_section = add_stub_section; | |
4286 | htab->layout_sections_again = layout_sections_again; | |
4287 | stubs_always_before_branch = group_size < 0; | |
4288 | if (group_size < 0) | |
4289 | stub_group_size = -group_size; | |
4290 | else | |
4291 | stub_group_size = group_size; | |
4292 | ||
4293 | if (stub_group_size == 1) | |
4294 | { | |
4295 | /* Default values. */ | |
b9eead84 | 4296 | /* AArch64 branch range is +-128MB. The value used is 1MB less. */ |
a06ea964 NC |
4297 | stub_group_size = 127 * 1024 * 1024; |
4298 | } | |
4299 | ||
4300 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
4301 | ||
4106101c MS |
4302 | (*htab->layout_sections_again) (); |
4303 | ||
5421cc6e MS |
4304 | if (htab->fix_erratum_835769) |
4305 | { | |
4306 | bfd *input_bfd; | |
4307 | ||
4308 | for (input_bfd = info->input_bfds; | |
4309 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
8c803a2d AM |
4310 | { |
4311 | if (!is_aarch64_elf (input_bfd) | |
4312 | || (input_bfd->flags & BFD_LINKER_CREATED) != 0) | |
4313 | continue; | |
4314 | ||
4315 | if (!_bfd_aarch64_erratum_835769_scan (input_bfd, info, | |
4316 | &num_erratum_835769_fixes)) | |
0a1b45a2 | 4317 | return false; |
8c803a2d | 4318 | } |
5421cc6e | 4319 | |
4106101c MS |
4320 | _bfd_aarch64_resize_stubs (htab); |
4321 | (*htab->layout_sections_again) (); | |
4322 | } | |
4323 | ||
739b5c9c | 4324 | if (htab->fix_erratum_843419 != ERRAT_NONE) |
4106101c MS |
4325 | { |
4326 | bfd *input_bfd; | |
4327 | ||
4328 | for (input_bfd = info->input_bfds; | |
4329 | input_bfd != NULL; | |
4330 | input_bfd = input_bfd->link.next) | |
4331 | { | |
4332 | asection *section; | |
4333 | ||
8c803a2d AM |
4334 | if (!is_aarch64_elf (input_bfd) |
4335 | || (input_bfd->flags & BFD_LINKER_CREATED) != 0) | |
4336 | continue; | |
4337 | ||
4106101c MS |
4338 | for (section = input_bfd->sections; |
4339 | section != NULL; | |
4340 | section = section->next) | |
4341 | if (!_bfd_aarch64_erratum_843419_scan (input_bfd, section, info)) | |
0a1b45a2 | 4342 | return false; |
4106101c MS |
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 | ||
8c803a2d AM |
4360 | if (!is_aarch64_elf (input_bfd) |
4361 | || (input_bfd->flags & BFD_LINKER_CREATED) != 0) | |
4362 | continue; | |
4363 | ||
a06ea964 NC |
4364 | /* We'll need the symbol table in a second. */ |
4365 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
4366 | if (symtab_hdr->sh_info == 0) | |
4367 | continue; | |
4368 | ||
4369 | /* Walk over each section attached to the input bfd. */ | |
4370 | for (section = input_bfd->sections; | |
4371 | section != NULL; section = section->next) | |
4372 | { | |
4373 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
4374 | ||
4375 | /* If there aren't any relocs, then there's nothing more | |
4376 | to do. */ | |
4377 | if ((section->flags & SEC_RELOC) == 0 | |
4378 | || section->reloc_count == 0 | |
4379 | || (section->flags & SEC_CODE) == 0) | |
4380 | continue; | |
4381 | ||
4382 | /* If this section is a link-once section that will be | |
4383 | discarded, then don't create any stubs. */ | |
4384 | if (section->output_section == NULL | |
4385 | || section->output_section->owner != output_bfd) | |
4386 | continue; | |
4387 | ||
4388 | /* Get the relocs. */ | |
4389 | internal_relocs | |
4390 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, | |
4391 | NULL, info->keep_memory); | |
4392 | if (internal_relocs == NULL) | |
4393 | goto error_ret_free_local; | |
4394 | ||
4395 | /* Now examine each relocation. */ | |
4396 | irela = internal_relocs; | |
4397 | irelaend = irela + section->reloc_count; | |
4398 | for (; irela < irelaend; irela++) | |
4399 | { | |
4400 | unsigned int r_type, r_indx; | |
cec5225b YZ |
4401 | enum elf_aarch64_stub_type stub_type; |
4402 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
a06ea964 NC |
4403 | asection *sym_sec; |
4404 | bfd_vma sym_value; | |
4405 | bfd_vma destination; | |
cec5225b | 4406 | struct elf_aarch64_link_hash_entry *hash; |
a06ea964 NC |
4407 | const char *sym_name; |
4408 | char *stub_name; | |
4409 | const asection *id_sec; | |
4410 | unsigned char st_type; | |
4411 | bfd_size_type len; | |
4412 | ||
cec5225b YZ |
4413 | r_type = ELFNN_R_TYPE (irela->r_info); |
4414 | r_indx = ELFNN_R_SYM (irela->r_info); | |
a06ea964 NC |
4415 | |
4416 | if (r_type >= (unsigned int) R_AARCH64_end) | |
4417 | { | |
4418 | bfd_set_error (bfd_error_bad_value); | |
4419 | error_ret_free_internal: | |
4420 | if (elf_section_data (section)->relocs == NULL) | |
4421 | free (internal_relocs); | |
4422 | goto error_ret_free_local; | |
4423 | } | |
4424 | ||
4425 | /* Only look for stubs on unconditional branch and | |
4426 | branch and link instructions. */ | |
a6bb11b2 YZ |
4427 | if (r_type != (unsigned int) AARCH64_R (CALL26) |
4428 | && r_type != (unsigned int) AARCH64_R (JUMP26)) | |
a06ea964 NC |
4429 | continue; |
4430 | ||
4431 | /* Now determine the call target, its name, value, | |
4432 | section. */ | |
4433 | sym_sec = NULL; | |
4434 | sym_value = 0; | |
4435 | destination = 0; | |
4436 | hash = NULL; | |
4437 | sym_name = NULL; | |
4438 | if (r_indx < symtab_hdr->sh_info) | |
4439 | { | |
4440 | /* It's a local symbol. */ | |
4441 | Elf_Internal_Sym *sym; | |
4442 | Elf_Internal_Shdr *hdr; | |
4443 | ||
4444 | if (local_syms == NULL) | |
4445 | { | |
4446 | local_syms | |
4447 | = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4448 | if (local_syms == NULL) | |
4449 | local_syms | |
4450 | = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
4451 | symtab_hdr->sh_info, 0, | |
4452 | NULL, NULL, NULL); | |
4453 | if (local_syms == NULL) | |
4454 | goto error_ret_free_internal; | |
4455 | } | |
4456 | ||
4457 | sym = local_syms + r_indx; | |
4458 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
4459 | sym_sec = hdr->bfd_section; | |
4460 | if (!sym_sec) | |
4461 | /* This is an undefined symbol. It can never | |
4462 | be resolved. */ | |
4463 | continue; | |
4464 | ||
4465 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
4466 | sym_value = sym->st_value; | |
4467 | destination = (sym_value + irela->r_addend | |
4468 | + sym_sec->output_offset | |
4469 | + sym_sec->output_section->vma); | |
4470 | st_type = ELF_ST_TYPE (sym->st_info); | |
4471 | sym_name | |
4472 | = bfd_elf_string_from_elf_section (input_bfd, | |
4473 | symtab_hdr->sh_link, | |
4474 | sym->st_name); | |
4475 | } | |
4476 | else | |
4477 | { | |
4478 | int e_indx; | |
4479 | ||
4480 | e_indx = r_indx - symtab_hdr->sh_info; | |
cec5225b | 4481 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
4482 | elf_sym_hashes (input_bfd)[e_indx]); |
4483 | ||
4484 | while (hash->root.root.type == bfd_link_hash_indirect | |
4485 | || hash->root.root.type == bfd_link_hash_warning) | |
cec5225b | 4486 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
4487 | hash->root.root.u.i.link); |
4488 | ||
4489 | if (hash->root.root.type == bfd_link_hash_defined | |
4490 | || hash->root.root.type == bfd_link_hash_defweak) | |
4491 | { | |
cec5225b YZ |
4492 | struct elf_aarch64_link_hash_table *globals = |
4493 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
4494 | sym_sec = hash->root.root.u.def.section; |
4495 | sym_value = hash->root.root.u.def.value; | |
4496 | /* For a destination in a shared library, | |
4497 | use the PLT stub as target address to | |
4498 | decide whether a branch stub is | |
4499 | needed. */ | |
4500 | if (globals->root.splt != NULL && hash != NULL | |
4501 | && hash->root.plt.offset != (bfd_vma) - 1) | |
4502 | { | |
4503 | sym_sec = globals->root.splt; | |
4504 | sym_value = hash->root.plt.offset; | |
4505 | if (sym_sec->output_section != NULL) | |
4506 | destination = (sym_value | |
4507 | + sym_sec->output_offset | |
4508 | + | |
4509 | sym_sec->output_section->vma); | |
4510 | } | |
4511 | else if (sym_sec->output_section != NULL) | |
4512 | destination = (sym_value + irela->r_addend | |
4513 | + sym_sec->output_offset | |
4514 | + sym_sec->output_section->vma); | |
4515 | } | |
4516 | else if (hash->root.root.type == bfd_link_hash_undefined | |
4517 | || (hash->root.root.type | |
4518 | == bfd_link_hash_undefweak)) | |
4519 | { | |
4520 | /* For a shared library, use the PLT stub as | |
4521 | target address to decide whether a long | |
4522 | branch stub is needed. | |
4523 | For absolute code, they cannot be handled. */ | |
cec5225b YZ |
4524 | struct elf_aarch64_link_hash_table *globals = |
4525 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
4526 | |
4527 | if (globals->root.splt != NULL && hash != NULL | |
4528 | && hash->root.plt.offset != (bfd_vma) - 1) | |
4529 | { | |
4530 | sym_sec = globals->root.splt; | |
4531 | sym_value = hash->root.plt.offset; | |
4532 | if (sym_sec->output_section != NULL) | |
4533 | destination = (sym_value | |
4534 | + sym_sec->output_offset | |
4535 | + | |
4536 | sym_sec->output_section->vma); | |
4537 | } | |
4538 | else | |
4539 | continue; | |
4540 | } | |
4541 | else | |
4542 | { | |
4543 | bfd_set_error (bfd_error_bad_value); | |
4544 | goto error_ret_free_internal; | |
4545 | } | |
4546 | st_type = ELF_ST_TYPE (hash->root.type); | |
4547 | sym_name = hash->root.root.root.string; | |
4548 | } | |
4549 | ||
4550 | /* Determine what (if any) linker stub is needed. */ | |
9a228467 JW |
4551 | stub_type = aarch64_type_of_stub (section, irela, sym_sec, |
4552 | st_type, destination); | |
a06ea964 NC |
4553 | if (stub_type == aarch64_stub_none) |
4554 | continue; | |
4555 | ||
4556 | /* Support for grouping stub sections. */ | |
4557 | id_sec = htab->stub_group[section->id].link_sec; | |
4558 | ||
4559 | /* Get the name of this stub. */ | |
cec5225b | 4560 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, hash, |
a06ea964 NC |
4561 | irela); |
4562 | if (!stub_name) | |
4563 | goto error_ret_free_internal; | |
4564 | ||
4565 | stub_entry = | |
4566 | aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
0a1b45a2 | 4567 | stub_name, false, false); |
a06ea964 NC |
4568 | if (stub_entry != NULL) |
4569 | { | |
4570 | /* The proper stub has already been created. */ | |
4571 | free (stub_name); | |
3da64fe4 RA |
4572 | /* Always update this stub's target since it may have |
4573 | changed after layout. */ | |
4574 | stub_entry->target_value = sym_value + irela->r_addend; | |
a06ea964 NC |
4575 | continue; |
4576 | } | |
4577 | ||
ef857521 MS |
4578 | stub_entry = _bfd_aarch64_add_stub_entry_in_group |
4579 | (stub_name, section, htab); | |
a06ea964 NC |
4580 | if (stub_entry == NULL) |
4581 | { | |
4582 | free (stub_name); | |
4583 | goto error_ret_free_internal; | |
4584 | } | |
4585 | ||
2f340668 | 4586 | stub_entry->target_value = sym_value + irela->r_addend; |
a06ea964 NC |
4587 | stub_entry->target_section = sym_sec; |
4588 | stub_entry->stub_type = stub_type; | |
4589 | stub_entry->h = hash; | |
4590 | stub_entry->st_type = st_type; | |
4591 | ||
4592 | if (sym_name == NULL) | |
4593 | sym_name = "unnamed"; | |
4594 | len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name); | |
4595 | stub_entry->output_name = bfd_alloc (htab->stub_bfd, len); | |
4596 | if (stub_entry->output_name == NULL) | |
4597 | { | |
4598 | free (stub_name); | |
4599 | goto error_ret_free_internal; | |
4600 | } | |
4601 | ||
4602 | snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME, | |
4603 | sym_name); | |
4604 | ||
0a1b45a2 | 4605 | stub_changed = true; |
a06ea964 NC |
4606 | } |
4607 | ||
4608 | /* We're done with the internal relocs, free them. */ | |
4609 | if (elf_section_data (section)->relocs == NULL) | |
4610 | free (internal_relocs); | |
4611 | } | |
4612 | } | |
4613 | ||
4614 | if (!stub_changed) | |
4615 | break; | |
4616 | ||
13f622ec | 4617 | _bfd_aarch64_resize_stubs (htab); |
a06ea964 NC |
4618 | |
4619 | /* Ask the linker to do its stuff. */ | |
4620 | (*htab->layout_sections_again) (); | |
0a1b45a2 | 4621 | stub_changed = false; |
a06ea964 NC |
4622 | } |
4623 | ||
0a1b45a2 | 4624 | return true; |
a06ea964 | 4625 | |
dc1e8a47 | 4626 | error_ret_free_local: |
0a1b45a2 | 4627 | return false; |
a06ea964 NC |
4628 | } |
4629 | ||
4630 | /* Build all the stubs associated with the current output file. The | |
4631 | stubs are kept in a hash table attached to the main linker hash | |
4632 | table. We also set up the .plt entries for statically linked PIC | |
4633 | functions here. This function is called via aarch64_elf_finish in the | |
4634 | linker. */ | |
4635 | ||
0a1b45a2 | 4636 | bool |
cec5225b | 4637 | elfNN_aarch64_build_stubs (struct bfd_link_info *info) |
a06ea964 NC |
4638 | { |
4639 | asection *stub_sec; | |
4640 | struct bfd_hash_table *table; | |
cec5225b | 4641 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 4642 | |
cec5225b | 4643 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
4644 | |
4645 | for (stub_sec = htab->stub_bfd->sections; | |
4646 | stub_sec != NULL; stub_sec = stub_sec->next) | |
4647 | { | |
4648 | bfd_size_type size; | |
4649 | ||
4650 | /* Ignore non-stub sections. */ | |
4651 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
4652 | continue; | |
4653 | ||
4654 | /* Allocate memory to hold the linker stubs. */ | |
4655 | size = stub_sec->size; | |
4656 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); | |
4657 | if (stub_sec->contents == NULL && size != 0) | |
0a1b45a2 | 4658 | return false; |
a06ea964 | 4659 | stub_sec->size = 0; |
61865519 | 4660 | |
9a2ebffd JW |
4661 | /* Add a branch around the stub section, and a nop, to keep it 8 byte |
4662 | aligned, as long branch stubs contain a 64-bit address. */ | |
61865519 | 4663 | bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents); |
9a2ebffd JW |
4664 | bfd_putl32 (INSN_NOP, stub_sec->contents + 4); |
4665 | stub_sec->size += 8; | |
a06ea964 NC |
4666 | } |
4667 | ||
4668 | /* Build the stubs as directed by the stub hash table. */ | |
4669 | table = &htab->stub_hash_table; | |
4670 | bfd_hash_traverse (table, aarch64_build_one_stub, info); | |
4671 | ||
0a1b45a2 | 4672 | return true; |
a06ea964 NC |
4673 | } |
4674 | ||
4675 | ||
4676 | /* Add an entry to the code/data map for section SEC. */ | |
4677 | ||
4678 | static void | |
cec5225b | 4679 | elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma) |
a06ea964 NC |
4680 | { |
4681 | struct _aarch64_elf_section_data *sec_data = | |
cec5225b | 4682 | elf_aarch64_section_data (sec); |
a06ea964 NC |
4683 | unsigned int newidx; |
4684 | ||
4685 | if (sec_data->map == NULL) | |
4686 | { | |
cec5225b | 4687 | sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
4688 | sec_data->mapcount = 0; |
4689 | sec_data->mapsize = 1; | |
4690 | } | |
4691 | ||
4692 | newidx = sec_data->mapcount++; | |
4693 | ||
4694 | if (sec_data->mapcount > sec_data->mapsize) | |
4695 | { | |
4696 | sec_data->mapsize *= 2; | |
4697 | sec_data->map = bfd_realloc_or_free | |
cec5225b | 4698 | (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
4699 | } |
4700 | ||
4701 | if (sec_data->map) | |
4702 | { | |
4703 | sec_data->map[newidx].vma = vma; | |
4704 | sec_data->map[newidx].type = type; | |
4705 | } | |
4706 | } | |
4707 | ||
4708 | ||
4709 | /* Initialise maps of insn/data for input BFDs. */ | |
4710 | void | |
cec5225b | 4711 | bfd_elfNN_aarch64_init_maps (bfd *abfd) |
a06ea964 NC |
4712 | { |
4713 | Elf_Internal_Sym *isymbuf; | |
4714 | Elf_Internal_Shdr *hdr; | |
4715 | unsigned int i, localsyms; | |
4716 | ||
4717 | /* Make sure that we are dealing with an AArch64 elf binary. */ | |
4718 | if (!is_aarch64_elf (abfd)) | |
4719 | return; | |
4720 | ||
4721 | if ((abfd->flags & DYNAMIC) != 0) | |
68fcca92 | 4722 | return; |
a06ea964 NC |
4723 | |
4724 | hdr = &elf_symtab_hdr (abfd); | |
4725 | localsyms = hdr->sh_info; | |
4726 | ||
4727 | /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field | |
4728 | should contain the number of local symbols, which should come before any | |
4729 | global symbols. Mapping symbols are always local. */ | |
4730 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL); | |
4731 | ||
4732 | /* No internal symbols read? Skip this BFD. */ | |
4733 | if (isymbuf == NULL) | |
4734 | return; | |
4735 | ||
4736 | for (i = 0; i < localsyms; i++) | |
4737 | { | |
4738 | Elf_Internal_Sym *isym = &isymbuf[i]; | |
4739 | asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4740 | const char *name; | |
4741 | ||
4742 | if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL) | |
4743 | { | |
4744 | name = bfd_elf_string_from_elf_section (abfd, | |
4745 | hdr->sh_link, | |
4746 | isym->st_name); | |
4747 | ||
4748 | if (bfd_is_aarch64_special_symbol_name | |
4749 | (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP)) | |
cec5225b | 4750 | elfNN_aarch64_section_map_add (sec, name[1], isym->st_value); |
a06ea964 NC |
4751 | } |
4752 | } | |
4753 | } | |
4754 | ||
37c18eed SD |
4755 | static void |
4756 | setup_plt_values (struct bfd_link_info *link_info, | |
4757 | aarch64_plt_type plt_type) | |
4758 | { | |
4759 | struct elf_aarch64_link_hash_table *globals; | |
4760 | globals = elf_aarch64_hash_table (link_info); | |
4761 | ||
1dbade74 SD |
4762 | if (plt_type == PLT_BTI_PAC) |
4763 | { | |
68bb0359 | 4764 | globals->plt0_entry = elfNN_aarch64_small_plt0_bti_entry; |
1dbade74 SD |
4765 | |
4766 | /* Only in ET_EXEC we need PLTn with BTI. */ | |
4767 | if (bfd_link_pde (link_info)) | |
4768 | { | |
4769 | globals->plt_entry_size = PLT_BTI_PAC_SMALL_ENTRY_SIZE; | |
4770 | globals->plt_entry = elfNN_aarch64_small_plt_bti_pac_entry; | |
4771 | } | |
4772 | else | |
4773 | { | |
4774 | globals->plt_entry_size = PLT_PAC_SMALL_ENTRY_SIZE; | |
4775 | globals->plt_entry = elfNN_aarch64_small_plt_pac_entry; | |
4776 | } | |
4777 | } | |
4778 | else if (plt_type == PLT_BTI) | |
37c18eed | 4779 | { |
37c18eed | 4780 | globals->plt0_entry = elfNN_aarch64_small_plt0_bti_entry; |
37c18eed SD |
4781 | |
4782 | /* Only in ET_EXEC we need PLTn with BTI. */ | |
4783 | if (bfd_link_pde (link_info)) | |
4784 | { | |
4785 | globals->plt_entry_size = PLT_BTI_SMALL_ENTRY_SIZE; | |
4786 | globals->plt_entry = elfNN_aarch64_small_plt_bti_entry; | |
4787 | } | |
4788 | } | |
1dbade74 SD |
4789 | else if (plt_type == PLT_PAC) |
4790 | { | |
1dbade74 SD |
4791 | globals->plt_entry_size = PLT_PAC_SMALL_ENTRY_SIZE; |
4792 | globals->plt_entry = elfNN_aarch64_small_plt_pac_entry; | |
4793 | } | |
37c18eed SD |
4794 | } |
4795 | ||
a06ea964 NC |
4796 | /* Set option values needed during linking. */ |
4797 | void | |
cec5225b | 4798 | bfd_elfNN_aarch64_set_options (struct bfd *output_bfd, |
a06ea964 NC |
4799 | struct bfd_link_info *link_info, |
4800 | int no_enum_warn, | |
68fcca92 | 4801 | int no_wchar_warn, int pic_veneer, |
4106101c | 4802 | int fix_erratum_835769, |
739b5c9c | 4803 | erratum_84319_opts fix_erratum_843419, |
37c18eed SD |
4804 | int no_apply_dynamic_relocs, |
4805 | aarch64_bti_pac_info bp_info) | |
a06ea964 | 4806 | { |
cec5225b | 4807 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 4808 | |
cec5225b | 4809 | globals = elf_aarch64_hash_table (link_info); |
a06ea964 | 4810 | globals->pic_veneer = pic_veneer; |
68fcca92 | 4811 | globals->fix_erratum_835769 = fix_erratum_835769; |
739b5c9c TC |
4812 | /* If the default options are used, then ERRAT_ADR will be set by default |
4813 | which will enable the ADRP->ADR workaround for the erratum 843419 | |
4814 | workaround. */ | |
4106101c | 4815 | globals->fix_erratum_843419 = fix_erratum_843419; |
1f56df9d | 4816 | globals->no_apply_dynamic_relocs = no_apply_dynamic_relocs; |
a06ea964 NC |
4817 | |
4818 | BFD_ASSERT (is_aarch64_elf (output_bfd)); | |
4819 | elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn; | |
4820 | elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn; | |
37c18eed SD |
4821 | |
4822 | switch (bp_info.bti_type) | |
4823 | { | |
4824 | case BTI_WARN: | |
4825 | elf_aarch64_tdata (output_bfd)->no_bti_warn = 0; | |
4826 | elf_aarch64_tdata (output_bfd)->gnu_and_prop | |
4827 | |= GNU_PROPERTY_AARCH64_FEATURE_1_BTI; | |
4828 | break; | |
4829 | ||
4830 | default: | |
4831 | break; | |
4832 | } | |
4833 | elf_aarch64_tdata (output_bfd)->plt_type = bp_info.plt_type; | |
4834 | setup_plt_values (link_info, bp_info.plt_type); | |
a06ea964 NC |
4835 | } |
4836 | ||
a06ea964 NC |
4837 | static bfd_vma |
4838 | aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h, | |
cec5225b | 4839 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
4840 | *globals, struct bfd_link_info *info, |
4841 | bfd_vma value, bfd *output_bfd, | |
0a1b45a2 | 4842 | bool *unresolved_reloc_p) |
a06ea964 NC |
4843 | { |
4844 | bfd_vma off = (bfd_vma) - 1; | |
4845 | asection *basegot = globals->root.sgot; | |
0a1b45a2 | 4846 | bool dyn = globals->root.dynamic_sections_created; |
a06ea964 NC |
4847 | |
4848 | if (h != NULL) | |
4849 | { | |
a6bb11b2 | 4850 | BFD_ASSERT (basegot != NULL); |
a06ea964 NC |
4851 | off = h->got.offset; |
4852 | BFD_ASSERT (off != (bfd_vma) - 1); | |
0e1862bb L |
4853 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h) |
4854 | || (bfd_link_pic (info) | |
a06ea964 NC |
4855 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
4856 | || (ELF_ST_VISIBILITY (h->other) | |
4857 | && h->root.type == bfd_link_hash_undefweak)) | |
4858 | { | |
4859 | /* This is actually a static link, or it is a -Bsymbolic link | |
4860 | and the symbol is defined locally. We must initialize this | |
4861 | entry in the global offset table. Since the offset must | |
a6bb11b2 YZ |
4862 | always be a multiple of 8 (4 in the case of ILP32), we use |
4863 | the least significant bit to record whether we have | |
4864 | initialized it already. | |
a06ea964 NC |
4865 | When doing a dynamic link, we create a .rel(a).got relocation |
4866 | entry to initialize the value. This is done in the | |
4867 | finish_dynamic_symbol routine. */ | |
4868 | if ((off & 1) != 0) | |
4869 | off &= ~1; | |
4870 | else | |
4871 | { | |
cec5225b | 4872 | bfd_put_NN (output_bfd, value, basegot->contents + off); |
a06ea964 NC |
4873 | h->got.offset |= 1; |
4874 | } | |
4875 | } | |
4876 | else | |
0a1b45a2 | 4877 | *unresolved_reloc_p = false; |
a06ea964 NC |
4878 | |
4879 | off = off + basegot->output_section->vma + basegot->output_offset; | |
4880 | } | |
4881 | ||
4882 | return off; | |
4883 | } | |
4884 | ||
4885 | /* Change R_TYPE to a more efficient access model where possible, | |
4886 | return the new reloc type. */ | |
4887 | ||
a6bb11b2 YZ |
4888 | static bfd_reloc_code_real_type |
4889 | aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type, | |
a06ea964 NC |
4890 | struct elf_link_hash_entry *h) |
4891 | { | |
0a1b45a2 | 4892 | bool is_local = h == NULL; |
a6bb11b2 | 4893 | |
a06ea964 NC |
4894 | switch (r_type) |
4895 | { | |
a6bb11b2 | 4896 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 4897 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a6bb11b2 YZ |
4898 | return (is_local |
4899 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4900 | : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21); | |
4901 | ||
389b8029 MS |
4902 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
4903 | return (is_local | |
4904 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4905 | : r_type); | |
4906 | ||
1ada945d MS |
4907 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
4908 | return (is_local | |
4909 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4910 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4911 | ||
0484b454 RL |
4912 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
4913 | return (is_local | |
4914 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4915 | : BFD_RELOC_AARCH64_NONE); | |
4916 | ||
4917 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
4918 | return (is_local | |
4919 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC | |
4920 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC); | |
4921 | ||
4922 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
4923 | return (is_local | |
4924 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 | |
4925 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1); | |
4926 | ||
a6bb11b2 | 4927 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
ce336788 | 4928 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 YZ |
4929 | return (is_local |
4930 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4931 | : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC); | |
4932 | ||
4933 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: | |
4934 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type; | |
4935 | ||
4936 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
4937 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type; | |
4938 | ||
043bf05a MS |
4939 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
4940 | return r_type; | |
4941 | ||
3c12b054 MS |
4942 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
4943 | return (is_local | |
4944 | ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 | |
4945 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4946 | ||
0484b454 | 4947 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
f955cccf | 4948 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 4949 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a06ea964 | 4950 | /* Instructions with these relocations will become NOPs. */ |
a6bb11b2 YZ |
4951 | return BFD_RELOC_AARCH64_NONE; |
4952 | ||
259364ad JW |
4953 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
4954 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: | |
4955 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: | |
4956 | return is_local ? BFD_RELOC_AARCH64_NONE : r_type; | |
4957 | ||
ac734732 RL |
4958 | #if ARCH_SIZE == 64 |
4959 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: | |
4960 | return is_local | |
4961 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC | |
4962 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC; | |
4963 | ||
4964 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: | |
4965 | return is_local | |
4966 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 | |
4967 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1; | |
4968 | #endif | |
4969 | ||
a6bb11b2 YZ |
4970 | default: |
4971 | break; | |
a06ea964 NC |
4972 | } |
4973 | ||
4974 | return r_type; | |
4975 | } | |
4976 | ||
4977 | static unsigned int | |
a6bb11b2 | 4978 | aarch64_reloc_got_type (bfd_reloc_code_real_type r_type) |
a06ea964 NC |
4979 | { |
4980 | switch (r_type) | |
4981 | { | |
a6bb11b2 YZ |
4982 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
4983 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 4984 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 4985 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 4986 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 4987 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 4988 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 4989 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 4990 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
a06ea964 NC |
4991 | return GOT_NORMAL; |
4992 | ||
ce336788 | 4993 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 4994 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 4995 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 4996 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 4997 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
73f925cc | 4998 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 4999 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 5000 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
5001 | return GOT_TLS_GD; |
5002 | ||
0484b454 | 5003 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
f955cccf | 5004 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 5005 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 5006 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 5007 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a6bb11b2 | 5008 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
f955cccf | 5009 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
1ada945d | 5010 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
5011 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
5012 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
5013 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a06ea964 NC |
5014 | return GOT_TLSDESC_GD; |
5015 | ||
a6bb11b2 | 5016 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 5017 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 5018 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 5019 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
5020 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
5021 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
a06ea964 NC |
5022 | return GOT_TLS_IE; |
5023 | ||
a6bb11b2 YZ |
5024 | default: |
5025 | break; | |
a06ea964 NC |
5026 | } |
5027 | return GOT_UNKNOWN; | |
5028 | } | |
5029 | ||
0a1b45a2 | 5030 | static bool |
a06ea964 NC |
5031 | aarch64_can_relax_tls (bfd *input_bfd, |
5032 | struct bfd_link_info *info, | |
a6bb11b2 | 5033 | bfd_reloc_code_real_type r_type, |
a06ea964 NC |
5034 | struct elf_link_hash_entry *h, |
5035 | unsigned long r_symndx) | |
5036 | { | |
5037 | unsigned int symbol_got_type; | |
5038 | unsigned int reloc_got_type; | |
5039 | ||
9331eea1 | 5040 | if (! IS_AARCH64_TLS_RELAX_RELOC (r_type)) |
0a1b45a2 | 5041 | return false; |
a06ea964 | 5042 | |
cec5225b | 5043 | symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx); |
a06ea964 NC |
5044 | reloc_got_type = aarch64_reloc_got_type (r_type); |
5045 | ||
5046 | if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type)) | |
0a1b45a2 | 5047 | return true; |
a06ea964 | 5048 | |
6dda7875 | 5049 | if (!bfd_link_executable (info)) |
0a1b45a2 | 5050 | return false; |
a06ea964 NC |
5051 | |
5052 | if (h && h->root.type == bfd_link_hash_undefweak) | |
0a1b45a2 | 5053 | return false; |
a06ea964 | 5054 | |
0a1b45a2 | 5055 | return true; |
a06ea964 NC |
5056 | } |
5057 | ||
a6bb11b2 YZ |
5058 | /* Given the relocation code R_TYPE, return the relaxed bfd reloc |
5059 | enumerator. */ | |
5060 | ||
5061 | static bfd_reloc_code_real_type | |
a06ea964 NC |
5062 | aarch64_tls_transition (bfd *input_bfd, |
5063 | struct bfd_link_info *info, | |
5064 | unsigned int r_type, | |
5065 | struct elf_link_hash_entry *h, | |
5066 | unsigned long r_symndx) | |
5067 | { | |
a6bb11b2 | 5068 | bfd_reloc_code_real_type bfd_r_type |
0aa13fee | 5069 | = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
a06ea964 | 5070 | |
a6bb11b2 YZ |
5071 | if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx)) |
5072 | return bfd_r_type; | |
5073 | ||
5074 | return aarch64_tls_transition_without_check (bfd_r_type, h); | |
a06ea964 NC |
5075 | } |
5076 | ||
5077 | /* Return the base VMA address which should be subtracted from real addresses | |
a6bb11b2 | 5078 | when resolving R_AARCH64_TLS_DTPREL relocation. */ |
a06ea964 NC |
5079 | |
5080 | static bfd_vma | |
5081 | dtpoff_base (struct bfd_link_info *info) | |
5082 | { | |
5083 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
5084 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); | |
5085 | return elf_hash_table (info)->tls_sec->vma; | |
5086 | } | |
5087 | ||
a06ea964 NC |
5088 | /* Return the base VMA address which should be subtracted from real addresses |
5089 | when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */ | |
5090 | ||
5091 | static bfd_vma | |
5092 | tpoff_base (struct bfd_link_info *info) | |
5093 | { | |
5094 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
5095 | ||
5096 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
ac21917f | 5097 | BFD_ASSERT (htab->tls_sec != NULL); |
a06ea964 NC |
5098 | |
5099 | bfd_vma base = align_power ((bfd_vma) TCB_SIZE, | |
5100 | htab->tls_sec->alignment_power); | |
5101 | return htab->tls_sec->vma - base; | |
5102 | } | |
5103 | ||
5104 | static bfd_vma * | |
5105 | symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5106 | unsigned long r_symndx) | |
5107 | { | |
5108 | /* Calculate the address of the GOT entry for symbol | |
5109 | referred to in h. */ | |
5110 | if (h != NULL) | |
5111 | return &h->got.offset; | |
5112 | else | |
5113 | { | |
5114 | /* local symbol */ | |
5115 | struct elf_aarch64_local_symbol *l; | |
5116 | ||
cec5225b | 5117 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
5118 | return &l[r_symndx].got_offset; |
5119 | } | |
5120 | } | |
5121 | ||
5122 | static void | |
5123 | symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5124 | unsigned long r_symndx) | |
5125 | { | |
5126 | bfd_vma *p; | |
5127 | p = symbol_got_offset_ref (input_bfd, h, r_symndx); | |
5128 | *p |= 1; | |
5129 | } | |
5130 | ||
5131 | static int | |
5132 | symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5133 | unsigned long r_symndx) | |
5134 | { | |
5135 | bfd_vma value; | |
5136 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
5137 | return value & 1; | |
5138 | } | |
5139 | ||
5140 | static bfd_vma | |
5141 | symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5142 | unsigned long r_symndx) | |
5143 | { | |
5144 | bfd_vma value; | |
5145 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
5146 | value &= ~1; | |
5147 | return value; | |
5148 | } | |
5149 | ||
5150 | static bfd_vma * | |
5151 | symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5152 | unsigned long r_symndx) | |
5153 | { | |
5154 | /* Calculate the address of the GOT entry for symbol | |
5155 | referred to in h. */ | |
5156 | if (h != NULL) | |
5157 | { | |
cec5225b YZ |
5158 | struct elf_aarch64_link_hash_entry *eh; |
5159 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
5160 | return &eh->tlsdesc_got_jump_table_offset; |
5161 | } | |
5162 | else | |
5163 | { | |
5164 | /* local symbol */ | |
5165 | struct elf_aarch64_local_symbol *l; | |
5166 | ||
cec5225b | 5167 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
5168 | return &l[r_symndx].tlsdesc_got_jump_table_offset; |
5169 | } | |
5170 | } | |
5171 | ||
5172 | static void | |
5173 | symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5174 | unsigned long r_symndx) | |
5175 | { | |
5176 | bfd_vma *p; | |
5177 | p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
5178 | *p |= 1; | |
5179 | } | |
5180 | ||
5181 | static int | |
5182 | symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd, | |
5183 | struct elf_link_hash_entry *h, | |
5184 | unsigned long r_symndx) | |
5185 | { | |
5186 | bfd_vma value; | |
5187 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
5188 | return value & 1; | |
5189 | } | |
5190 | ||
5191 | static bfd_vma | |
5192 | symbol_tlsdesc_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5193 | unsigned long r_symndx) | |
5194 | { | |
5195 | bfd_vma value; | |
5196 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
5197 | value &= ~1; | |
5198 | return value; | |
5199 | } | |
5200 | ||
68fcca92 JW |
5201 | /* Data for make_branch_to_erratum_835769_stub(). */ |
5202 | ||
5203 | struct erratum_835769_branch_to_stub_data | |
5204 | { | |
4106101c | 5205 | struct bfd_link_info *info; |
68fcca92 JW |
5206 | asection *output_section; |
5207 | bfd_byte *contents; | |
5208 | }; | |
5209 | ||
5210 | /* Helper to insert branches to erratum 835769 stubs in the right | |
5211 | places for a particular section. */ | |
5212 | ||
0a1b45a2 | 5213 | static bool |
68fcca92 JW |
5214 | make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry, |
5215 | void *in_arg) | |
5216 | { | |
5217 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
5218 | struct erratum_835769_branch_to_stub_data *data; | |
5219 | bfd_byte *contents; | |
5220 | unsigned long branch_insn = 0; | |
5221 | bfd_vma veneered_insn_loc, veneer_entry_loc; | |
5222 | bfd_signed_vma branch_offset; | |
5223 | unsigned int target; | |
5224 | bfd *abfd; | |
5225 | ||
5226 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
5227 | data = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
5228 | ||
5229 | if (stub_entry->target_section != data->output_section | |
5230 | || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer) | |
0a1b45a2 | 5231 | return true; |
68fcca92 JW |
5232 | |
5233 | contents = data->contents; | |
5234 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
5235 | + stub_entry->target_section->output_offset | |
5236 | + stub_entry->target_value; | |
5237 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
5238 | + stub_entry->stub_sec->output_offset | |
5239 | + stub_entry->stub_offset; | |
5240 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
5241 | ||
5242 | abfd = stub_entry->target_section->owner; | |
5243 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4eca0228 | 5244 | _bfd_error_handler |
90b6238f | 5245 | (_("%pB: error: erratum 835769 stub out " |
4eca0228 | 5246 | "of range (input file too large)"), abfd); |
68fcca92 JW |
5247 | |
5248 | target = stub_entry->target_value; | |
5249 | branch_insn = 0x14000000; | |
5250 | branch_offset >>= 2; | |
5251 | branch_offset &= 0x3ffffff; | |
5252 | branch_insn |= branch_offset; | |
5253 | bfd_putl32 (branch_insn, &contents[target]); | |
5254 | ||
0a1b45a2 | 5255 | return true; |
68fcca92 JW |
5256 | } |
5257 | ||
4106101c | 5258 | |
0a1b45a2 | 5259 | static bool |
4106101c MS |
5260 | _bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry, |
5261 | void *in_arg) | |
5262 | { | |
5263 | struct elf_aarch64_stub_hash_entry *stub_entry | |
5264 | = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
5265 | struct erratum_835769_branch_to_stub_data *data | |
5266 | = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
5267 | struct bfd_link_info *info; | |
5268 | struct elf_aarch64_link_hash_table *htab; | |
5269 | bfd_byte *contents; | |
5270 | asection *section; | |
5271 | bfd *abfd; | |
5272 | bfd_vma place; | |
5273 | uint32_t insn; | |
5274 | ||
5275 | info = data->info; | |
5276 | contents = data->contents; | |
5277 | section = data->output_section; | |
5278 | ||
5279 | htab = elf_aarch64_hash_table (info); | |
5280 | ||
5281 | if (stub_entry->target_section != section | |
5282 | || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer) | |
0a1b45a2 | 5283 | return true; |
4106101c | 5284 | |
739b5c9c TC |
5285 | BFD_ASSERT (((htab->fix_erratum_843419 & ERRAT_ADRP) && stub_entry->stub_sec) |
5286 | || (htab->fix_erratum_843419 & ERRAT_ADR)); | |
5287 | ||
5288 | /* Only update the stub section if we have one. We should always have one if | |
5289 | we're allowed to use the ADRP errata workaround, otherwise it is not | |
5290 | required. */ | |
5291 | if (stub_entry->stub_sec) | |
5292 | { | |
5293 | insn = bfd_getl32 (contents + stub_entry->target_value); | |
5294 | bfd_putl32 (insn, | |
5295 | stub_entry->stub_sec->contents + stub_entry->stub_offset); | |
5296 | } | |
4106101c MS |
5297 | |
5298 | place = (section->output_section->vma + section->output_offset | |
5299 | + stub_entry->adrp_offset); | |
5300 | insn = bfd_getl32 (contents + stub_entry->adrp_offset); | |
5301 | ||
9fca35fc | 5302 | if (!_bfd_aarch64_adrp_p (insn)) |
4106101c MS |
5303 | abort (); |
5304 | ||
5305 | bfd_signed_vma imm = | |
5306 | (_bfd_aarch64_sign_extend | |
5307 | ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33) | |
5308 | - (place & 0xfff)); | |
5309 | ||
739b5c9c | 5310 | if ((htab->fix_erratum_843419 & ERRAT_ADR) |
4106101c MS |
5311 | && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM)) |
5312 | { | |
5313 | insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm) | |
5314 | | AARCH64_RT (insn)); | |
5315 | bfd_putl32 (insn, contents + stub_entry->adrp_offset); | |
739b5c9c TC |
5316 | /* Stub is not needed, don't map it out. */ |
5317 | stub_entry->stub_type = aarch64_stub_none; | |
4106101c | 5318 | } |
739b5c9c | 5319 | else if (htab->fix_erratum_843419 & ERRAT_ADRP) |
4106101c MS |
5320 | { |
5321 | bfd_vma veneered_insn_loc; | |
5322 | bfd_vma veneer_entry_loc; | |
5323 | bfd_signed_vma branch_offset; | |
5324 | uint32_t branch_insn; | |
5325 | ||
5326 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
5327 | + stub_entry->target_section->output_offset | |
5328 | + stub_entry->target_value; | |
5329 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
5330 | + stub_entry->stub_sec->output_offset | |
5331 | + stub_entry->stub_offset; | |
5332 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
5333 | ||
5334 | abfd = stub_entry->target_section->owner; | |
5335 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4eca0228 | 5336 | _bfd_error_handler |
90b6238f | 5337 | (_("%pB: error: erratum 843419 stub out " |
4106101c MS |
5338 | "of range (input file too large)"), abfd); |
5339 | ||
5340 | branch_insn = 0x14000000; | |
5341 | branch_offset >>= 2; | |
5342 | branch_offset &= 0x3ffffff; | |
5343 | branch_insn |= branch_offset; | |
5344 | bfd_putl32 (branch_insn, contents + stub_entry->target_value); | |
5345 | } | |
739b5c9c TC |
5346 | else |
5347 | { | |
ffa5352c NC |
5348 | char imm_buf[128]; |
5349 | ||
5350 | sprintf (imm_buf, "%" BFD_VMA_FMT "x", imm); | |
739b5c9c TC |
5351 | abfd = stub_entry->target_section->owner; |
5352 | _bfd_error_handler | |
ffa5352c | 5353 | (_("%pB: error: erratum 843419 immediate 0x%s " |
739b5c9c TC |
5354 | "out of range for ADR (input file too large) and " |
5355 | "--fix-cortex-a53-843419=adr used. Run the linker with " | |
ffa5352c | 5356 | "--fix-cortex-a53-843419=full instead"), abfd, imm_buf); |
739b5c9c TC |
5357 | bfd_set_error (bfd_error_bad_value); |
5358 | /* This function is called inside a hashtable traversal and the error | |
5359 | handlers called above turn into non-fatal errors. Which means this | |
5360 | case ld returns an exit code 0 and also produces a broken object file. | |
5361 | To prevent this, issue a hard abort. */ | |
5362 | BFD_FAIL (); | |
5363 | } | |
0a1b45a2 | 5364 | return true; |
4106101c MS |
5365 | } |
5366 | ||
5367 | ||
0a1b45a2 | 5368 | static bool |
68fcca92 JW |
5369 | elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, |
5370 | struct bfd_link_info *link_info, | |
5371 | asection *sec, | |
5372 | bfd_byte *contents) | |
5373 | ||
5374 | { | |
5375 | struct elf_aarch64_link_hash_table *globals = | |
f872121a | 5376 | elf_aarch64_hash_table (link_info); |
68fcca92 JW |
5377 | |
5378 | if (globals == NULL) | |
0a1b45a2 | 5379 | return false; |
68fcca92 JW |
5380 | |
5381 | /* Fix code to point to erratum 835769 stubs. */ | |
5382 | if (globals->fix_erratum_835769) | |
5383 | { | |
5384 | struct erratum_835769_branch_to_stub_data data; | |
5385 | ||
4106101c | 5386 | data.info = link_info; |
68fcca92 JW |
5387 | data.output_section = sec; |
5388 | data.contents = contents; | |
5389 | bfd_hash_traverse (&globals->stub_hash_table, | |
5390 | make_branch_to_erratum_835769_stub, &data); | |
5391 | } | |
5392 | ||
4106101c MS |
5393 | if (globals->fix_erratum_843419) |
5394 | { | |
5395 | struct erratum_835769_branch_to_stub_data data; | |
5396 | ||
5397 | data.info = link_info; | |
5398 | data.output_section = sec; | |
5399 | data.contents = contents; | |
5400 | bfd_hash_traverse (&globals->stub_hash_table, | |
5401 | _bfd_aarch64_erratum_843419_branch_to_stub, &data); | |
5402 | } | |
5403 | ||
0a1b45a2 | 5404 | return false; |
68fcca92 JW |
5405 | } |
5406 | ||
2aff25ba JW |
5407 | /* Return TRUE if RELOC is a relocation against the base of GOT table. */ |
5408 | ||
0a1b45a2 | 5409 | static bool |
2aff25ba JW |
5410 | aarch64_relocation_aginst_gp_p (bfd_reloc_code_real_type reloc) |
5411 | { | |
5412 | return (reloc == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14 | |
5413 | || reloc == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 | |
5414 | || reloc == BFD_RELOC_AARCH64_LD64_GOTOFF_LO15 | |
5415 | || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC | |
5416 | || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G1); | |
5417 | } | |
5418 | ||
4e7fbb34 JW |
5419 | /* Perform a relocation as part of a final link. The input relocation type |
5420 | should be TLS relaxed. */ | |
5421 | ||
a06ea964 | 5422 | static bfd_reloc_status_type |
cec5225b | 5423 | elfNN_aarch64_final_link_relocate (reloc_howto_type *howto, |
a06ea964 NC |
5424 | bfd *input_bfd, |
5425 | bfd *output_bfd, | |
5426 | asection *input_section, | |
5427 | bfd_byte *contents, | |
5428 | Elf_Internal_Rela *rel, | |
5429 | bfd_vma value, | |
5430 | struct bfd_link_info *info, | |
5431 | asection *sym_sec, | |
5432 | struct elf_link_hash_entry *h, | |
0a1b45a2 AM |
5433 | bool *unresolved_reloc_p, |
5434 | bool save_addend, | |
1419bbe5 WN |
5435 | bfd_vma *saved_addend, |
5436 | Elf_Internal_Sym *sym) | |
a06ea964 | 5437 | { |
1419bbe5 | 5438 | Elf_Internal_Shdr *symtab_hdr; |
a06ea964 | 5439 | unsigned int r_type = howto->type; |
a6bb11b2 YZ |
5440 | bfd_reloc_code_real_type bfd_r_type |
5441 | = elfNN_aarch64_bfd_reloc_from_howto (howto); | |
a06ea964 NC |
5442 | unsigned long r_symndx; |
5443 | bfd_byte *hit_data = contents + rel->r_offset; | |
96d01d93 | 5444 | bfd_vma place, off, got_entry_addr = 0; |
a06ea964 | 5445 | bfd_signed_vma signed_addend; |
cec5225b | 5446 | struct elf_aarch64_link_hash_table *globals; |
0a1b45a2 AM |
5447 | bool weak_undef_p; |
5448 | bool relative_reloc; | |
b53b1bed | 5449 | asection *base_got; |
ff07562f | 5450 | bfd_vma orig_value = value; |
0a1b45a2 AM |
5451 | bool resolved_to_zero; |
5452 | bool abs_symbol_p; | |
a06ea964 | 5453 | |
cec5225b | 5454 | globals = elf_aarch64_hash_table (info); |
a06ea964 | 5455 | |
1419bbe5 WN |
5456 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5457 | ||
a06ea964 NC |
5458 | BFD_ASSERT (is_aarch64_elf (input_bfd)); |
5459 | ||
cec5225b | 5460 | r_symndx = ELFNN_R_SYM (rel->r_info); |
a06ea964 | 5461 | |
a06ea964 NC |
5462 | place = input_section->output_section->vma |
5463 | + input_section->output_offset + rel->r_offset; | |
5464 | ||
5465 | /* Get addend, accumulating the addend for consecutive relocs | |
5466 | which refer to the same offset. */ | |
5467 | signed_addend = saved_addend ? *saved_addend : 0; | |
5468 | signed_addend += rel->r_addend; | |
5469 | ||
5470 | weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak | |
5471 | : bfd_is_und_section (sym_sec)); | |
c691de6a | 5472 | abs_symbol_p = h != NULL && bfd_is_abs_symbol (&h->root); |
0c1ded8d | 5473 | |
a6bb11b2 | 5474 | |
1419bbe5 WN |
5475 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
5476 | it here if it is defined in a non-shared object. */ | |
5477 | if (h != NULL | |
5478 | && h->type == STT_GNU_IFUNC | |
5479 | && h->def_regular) | |
5480 | { | |
5481 | asection *plt; | |
5482 | const char *name; | |
99ad26cb | 5483 | bfd_vma addend = 0; |
1419bbe5 | 5484 | |
545bc2b3 SN |
5485 | if ((input_section->flags & SEC_ALLOC) == 0) |
5486 | { | |
f657f8c4 NC |
5487 | /* If this is a SHT_NOTE section without SHF_ALLOC, treat |
5488 | STT_GNU_IFUNC symbol as STT_FUNC. */ | |
5489 | if (elf_section_type (input_section) == SHT_NOTE) | |
5490 | goto skip_ifunc; | |
5491 | ||
545bc2b3 SN |
5492 | /* Dynamic relocs are not propagated for SEC_DEBUGGING |
5493 | sections because such sections are not SEC_ALLOC and | |
5494 | thus ld.so will not process them. */ | |
5495 | if ((input_section->flags & SEC_DEBUGGING) != 0) | |
5496 | return bfd_reloc_ok; | |
5497 | ||
5498 | if (h->root.root.string) | |
5499 | name = h->root.root.string; | |
5500 | else | |
5501 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, NULL); | |
5502 | _bfd_error_handler | |
5503 | /* xgettext:c-format */ | |
2dcf00ce AM |
5504 | (_("%pB(%pA+%#" PRIx64 "): " |
5505 | "unresolvable %s relocation against symbol `%s'"), | |
5506 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
5507 | howto->name, name); | |
545bc2b3 | 5508 | bfd_set_error (bfd_error_bad_value); |
1d75a8e2 | 5509 | return bfd_reloc_notsupported; |
545bc2b3 SN |
5510 | } |
5511 | else if (h->plt.offset == (bfd_vma) -1) | |
5512 | goto bad_ifunc_reloc; | |
1419bbe5 WN |
5513 | |
5514 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
5515 | plt = globals->root.splt ? globals->root.splt : globals->root.iplt; | |
5516 | value = (plt->output_section->vma + plt->output_offset + h->plt.offset); | |
5517 | ||
5518 | switch (bfd_r_type) | |
5519 | { | |
5520 | default: | |
dc1e8a47 | 5521 | bad_ifunc_reloc: |
1419bbe5 WN |
5522 | if (h->root.root.string) |
5523 | name = h->root.root.string; | |
5524 | else | |
5525 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
5526 | NULL); | |
4eca0228 | 5527 | _bfd_error_handler |
695344c0 | 5528 | /* xgettext:c-format */ |
871b3ab2 | 5529 | (_("%pB: relocation %s against STT_GNU_IFUNC " |
1419bbe5 WN |
5530 | "symbol `%s' isn't handled by %s"), input_bfd, |
5531 | howto->name, name, __FUNCTION__); | |
5532 | bfd_set_error (bfd_error_bad_value); | |
1d75a8e2 | 5533 | return bfd_reloc_notsupported; |
1419bbe5 WN |
5534 | |
5535 | case BFD_RELOC_AARCH64_NN: | |
5536 | if (rel->r_addend != 0) | |
5537 | { | |
5538 | if (h->root.root.string) | |
5539 | name = h->root.root.string; | |
5540 | else | |
5541 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
5542 | sym, NULL); | |
4eca0228 | 5543 | _bfd_error_handler |
695344c0 | 5544 | /* xgettext:c-format */ |
871b3ab2 | 5545 | (_("%pB: relocation %s against STT_GNU_IFUNC " |
2dcf00ce AM |
5546 | "symbol `%s' has non-zero addend: %" PRId64), |
5547 | input_bfd, howto->name, name, (int64_t) rel->r_addend); | |
1419bbe5 | 5548 | bfd_set_error (bfd_error_bad_value); |
1d75a8e2 | 5549 | return bfd_reloc_notsupported; |
1419bbe5 WN |
5550 | } |
5551 | ||
5552 | /* Generate dynamic relocation only when there is a | |
5553 | non-GOT reference in a shared object. */ | |
0e1862bb | 5554 | if (bfd_link_pic (info) && h->non_got_ref) |
1419bbe5 WN |
5555 | { |
5556 | Elf_Internal_Rela outrel; | |
5557 | asection *sreloc; | |
5558 | ||
5559 | /* Need a dynamic relocation to get the real function | |
5560 | address. */ | |
5561 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
5562 | info, | |
5563 | input_section, | |
5564 | rel->r_offset); | |
5565 | if (outrel.r_offset == (bfd_vma) -1 | |
5566 | || outrel.r_offset == (bfd_vma) -2) | |
5567 | abort (); | |
5568 | ||
5569 | outrel.r_offset += (input_section->output_section->vma | |
5570 | + input_section->output_offset); | |
5571 | ||
5572 | if (h->dynindx == -1 | |
5573 | || h->forced_local | |
0e1862bb | 5574 | || bfd_link_executable (info)) |
1419bbe5 WN |
5575 | { |
5576 | /* This symbol is resolved locally. */ | |
5577 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
5578 | outrel.r_addend = (h->root.u.def.value | |
5579 | + h->root.u.def.section->output_section->vma | |
5580 | + h->root.u.def.section->output_offset); | |
5581 | } | |
5582 | else | |
5583 | { | |
5584 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); | |
5585 | outrel.r_addend = 0; | |
5586 | } | |
5587 | ||
5588 | sreloc = globals->root.irelifunc; | |
5589 | elf_append_rela (output_bfd, sreloc, &outrel); | |
5590 | ||
5591 | /* If this reloc is against an external symbol, we | |
5592 | do not want to fiddle with the addend. Otherwise, | |
5593 | we need to include the symbol value so that it | |
5594 | becomes an addend for the dynamic reloc. For an | |
5595 | internal symbol, we have updated addend. */ | |
5596 | return bfd_reloc_ok; | |
5597 | } | |
5598 | /* FALLTHROUGH */ | |
1419bbe5 | 5599 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 5600 | case BFD_RELOC_AARCH64_JUMP26: |
652afeef TC |
5601 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
5602 | place, value, | |
1419bbe5 WN |
5603 | signed_addend, |
5604 | weak_undef_p); | |
5605 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, | |
5606 | howto, value); | |
1419bbe5 WN |
5607 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
5608 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 5609 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 5610 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 5611 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
dc8008f5 | 5612 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 5613 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
a2e1db00 | 5614 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
ce336788 | 5615 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
1419bbe5 WN |
5616 | base_got = globals->root.sgot; |
5617 | off = h->got.offset; | |
5618 | ||
5619 | if (base_got == NULL) | |
5620 | abort (); | |
5621 | ||
5622 | if (off == (bfd_vma) -1) | |
5623 | { | |
5624 | bfd_vma plt_index; | |
5625 | ||
5626 | /* We can't use h->got.offset here to save state, or | |
5627 | even just remember the offset, as finish_dynamic_symbol | |
5628 | would use that as offset into .got. */ | |
5629 | ||
5630 | if (globals->root.splt != NULL) | |
5631 | { | |
b1ee0cc4 WN |
5632 | plt_index = ((h->plt.offset - globals->plt_header_size) / |
5633 | globals->plt_entry_size); | |
1419bbe5 WN |
5634 | off = (plt_index + 3) * GOT_ENTRY_SIZE; |
5635 | base_got = globals->root.sgotplt; | |
5636 | } | |
5637 | else | |
5638 | { | |
5639 | plt_index = h->plt.offset / globals->plt_entry_size; | |
5640 | off = plt_index * GOT_ENTRY_SIZE; | |
5641 | base_got = globals->root.igotplt; | |
5642 | } | |
5643 | ||
5644 | if (h->dynindx == -1 | |
5645 | || h->forced_local | |
5646 | || info->symbolic) | |
5647 | { | |
5648 | /* This references the local definition. We must | |
5649 | initialize this entry in the global offset table. | |
5650 | Since the offset must always be a multiple of 8, | |
5651 | we use the least significant bit to record | |
5652 | whether we have initialized it already. | |
5653 | ||
5654 | When doing a dynamic link, we create a .rela.got | |
5655 | relocation entry to initialize the value. This | |
5656 | is done in the finish_dynamic_symbol routine. */ | |
5657 | if ((off & 1) != 0) | |
5658 | off &= ~1; | |
5659 | else | |
5660 | { | |
5661 | bfd_put_NN (output_bfd, value, | |
5662 | base_got->contents + off); | |
5663 | /* Note that this is harmless as -1 | 1 still is -1. */ | |
5664 | h->got.offset |= 1; | |
5665 | } | |
5666 | } | |
5667 | value = (base_got->output_section->vma | |
5668 | + base_got->output_offset + off); | |
5669 | } | |
5670 | else | |
5671 | value = aarch64_calculate_got_entry_vma (h, globals, info, | |
5672 | value, output_bfd, | |
5673 | unresolved_reloc_p); | |
a0becb89 | 5674 | |
2aff25ba JW |
5675 | if (aarch64_relocation_aginst_gp_p (bfd_r_type)) |
5676 | addend = (globals->root.sgot->output_section->vma | |
5677 | + globals->root.sgot->output_offset); | |
a0becb89 | 5678 | |
652afeef TC |
5679 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
5680 | place, value, | |
99ad26cb | 5681 | addend, weak_undef_p); |
1419bbe5 | 5682 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value); |
1419bbe5 | 5683 | case BFD_RELOC_AARCH64_ADD_LO12: |
ce336788 | 5684 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: |
1419bbe5 WN |
5685 | break; |
5686 | } | |
5687 | } | |
5688 | ||
f657f8c4 | 5689 | skip_ifunc: |
ddb7fd0f L |
5690 | resolved_to_zero = (h != NULL |
5691 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
5692 | ||
a6bb11b2 | 5693 | switch (bfd_r_type) |
a06ea964 | 5694 | { |
a6bb11b2 | 5695 | case BFD_RELOC_AARCH64_NONE: |
0484b454 | 5696 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
a6bb11b2 | 5697 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
0484b454 | 5698 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
0a1b45a2 | 5699 | *unresolved_reloc_p = false; |
a06ea964 NC |
5700 | return bfd_reloc_ok; |
5701 | ||
a6bb11b2 | 5702 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
5703 | |
5704 | /* When generating a shared object or relocatable executable, these | |
07d6d2b8 AM |
5705 | relocations are copied into the output file to be resolved at |
5706 | run time. */ | |
6353d82b JW |
5707 | if (((bfd_link_pic (info) |
5708 | || globals->root.is_relocatable_executable) | |
5709 | && (input_section->flags & SEC_ALLOC) | |
5710 | && (h == NULL | |
ddb7fd0f L |
5711 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
5712 | && !resolved_to_zero) | |
6353d82b JW |
5713 | || h->root.type != bfd_link_hash_undefweak)) |
5714 | /* Or we are creating an executable, we may need to keep relocations | |
5715 | for symbols satisfied by a dynamic library if we manage to avoid | |
5716 | copy relocs for the symbol. */ | |
5717 | || (ELIMINATE_COPY_RELOCS | |
5718 | && !bfd_link_pic (info) | |
5719 | && h != NULL | |
5720 | && (input_section->flags & SEC_ALLOC) | |
5721 | && h->dynindx != -1 | |
5722 | && !h->non_got_ref | |
5723 | && ((h->def_dynamic | |
5724 | && !h->def_regular) | |
5725 | || h->root.type == bfd_link_hash_undefweak | |
5726 | || h->root.type == bfd_link_hash_undefined))) | |
a06ea964 NC |
5727 | { |
5728 | Elf_Internal_Rela outrel; | |
5729 | bfd_byte *loc; | |
0a1b45a2 | 5730 | bool skip, relocate; |
a06ea964 NC |
5731 | asection *sreloc; |
5732 | ||
0a1b45a2 | 5733 | *unresolved_reloc_p = false; |
a06ea964 | 5734 | |
0a1b45a2 AM |
5735 | skip = false; |
5736 | relocate = false; | |
a06ea964 NC |
5737 | |
5738 | outrel.r_addend = signed_addend; | |
5739 | outrel.r_offset = | |
5740 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
5741 | rel->r_offset); | |
5742 | if (outrel.r_offset == (bfd_vma) - 1) | |
0a1b45a2 | 5743 | skip = true; |
a06ea964 NC |
5744 | else if (outrel.r_offset == (bfd_vma) - 2) |
5745 | { | |
0a1b45a2 AM |
5746 | skip = true; |
5747 | relocate = true; | |
a06ea964 | 5748 | } |
0c1ded8d RL |
5749 | else if (abs_symbol_p) |
5750 | { | |
5751 | /* Local absolute symbol. */ | |
5752 | skip = (h->forced_local || (h->dynindx == -1)); | |
5753 | relocate = skip; | |
5754 | } | |
a06ea964 NC |
5755 | |
5756 | outrel.r_offset += (input_section->output_section->vma | |
5757 | + input_section->output_offset); | |
5758 | ||
5759 | if (skip) | |
5760 | memset (&outrel, 0, sizeof outrel); | |
5761 | else if (h != NULL | |
5762 | && h->dynindx != -1 | |
0e1862bb | 5763 | && (!bfd_link_pic (info) |
0c1ded8d | 5764 | || !(bfd_link_pie (info) || SYMBOLIC_BIND (info, h)) |
0e1862bb | 5765 | || !h->def_regular)) |
cec5225b | 5766 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); |
a06ea964 NC |
5767 | else |
5768 | { | |
5769 | int symbol; | |
5770 | ||
5771 | /* On SVR4-ish systems, the dynamic loader cannot | |
5772 | relocate the text and data segments independently, | |
5773 | so the symbol does not matter. */ | |
5774 | symbol = 0; | |
63b4cc53 | 5775 | relocate = !globals->no_apply_dynamic_relocs; |
a6bb11b2 | 5776 | outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE)); |
a06ea964 NC |
5777 | outrel.r_addend += value; |
5778 | } | |
5779 | ||
1419bbe5 WN |
5780 | sreloc = elf_section_data (input_section)->sreloc; |
5781 | if (sreloc == NULL || sreloc->contents == NULL) | |
5782 | return bfd_reloc_notsupported; | |
5783 | ||
5784 | loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals); | |
cec5225b | 5785 | bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc); |
a06ea964 | 5786 | |
1419bbe5 | 5787 | if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size) |
a06ea964 NC |
5788 | { |
5789 | /* Sanity to check that we have previously allocated | |
5790 | sufficient space in the relocation section for the | |
5791 | number of relocations we actually want to emit. */ | |
5792 | abort (); | |
5793 | } | |
5794 | ||
5795 | /* If this reloc is against an external symbol, we do not want to | |
5796 | fiddle with the addend. Otherwise, we need to include the symbol | |
5797 | value so that it becomes an addend for the dynamic reloc. */ | |
5798 | if (!relocate) | |
5799 | return bfd_reloc_ok; | |
5800 | ||
5801 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5802 | contents, rel->r_offset, value, | |
5803 | signed_addend); | |
5804 | } | |
5805 | else | |
5806 | value += signed_addend; | |
5807 | break; | |
5808 | ||
a6bb11b2 | 5809 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 5810 | case BFD_RELOC_AARCH64_JUMP26: |
a06ea964 NC |
5811 | { |
5812 | asection *splt = globals->root.splt; | |
0a1b45a2 | 5813 | bool via_plt_p = |
c7cd2917 | 5814 | splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1; |
a06ea964 NC |
5815 | |
5816 | /* A call to an undefined weak symbol is converted to a jump to | |
5817 | the next instruction unless a PLT entry will be created. | |
5818 | The jump to the next instruction is optimized as a NOP. | |
5819 | Do the same for local undefined symbols. */ | |
5820 | if (weak_undef_p && ! via_plt_p) | |
5821 | { | |
5822 | bfd_putl32 (INSN_NOP, hit_data); | |
5823 | return bfd_reloc_ok; | |
5824 | } | |
5825 | ||
5826 | /* If the call goes through a PLT entry, make sure to | |
5827 | check distance to the right destination address. */ | |
5828 | if (via_plt_p) | |
07f9ddfe JW |
5829 | value = (splt->output_section->vma |
5830 | + splt->output_offset + h->plt.offset); | |
5831 | ||
5832 | /* Check if a stub has to be inserted because the destination | |
5833 | is too far away. */ | |
5834 | struct elf_aarch64_stub_hash_entry *stub_entry = NULL; | |
2f340668 JW |
5835 | |
5836 | /* If the branch destination is directed to plt stub, "value" will be | |
5837 | the final destination, otherwise we should plus signed_addend, it may | |
5838 | contain non-zero value, for example call to local function symbol | |
5839 | which are turned into "sec_sym + sec_off", and sec_off is kept in | |
5840 | signed_addend. */ | |
5841 | if (! aarch64_valid_branch_p (via_plt_p ? value : value + signed_addend, | |
5842 | place)) | |
07f9ddfe JW |
5843 | /* The target is out of reach, so redirect the branch to |
5844 | the local stub for this function. */ | |
5845 | stub_entry = elfNN_aarch64_get_stub_entry (input_section, sym_sec, h, | |
5846 | rel, globals); | |
5847 | if (stub_entry != NULL) | |
2f340668 JW |
5848 | { |
5849 | value = (stub_entry->stub_offset | |
5850 | + stub_entry->stub_sec->output_offset | |
5851 | + stub_entry->stub_sec->output_section->vma); | |
5852 | ||
5853 | /* We have redirected the destination to stub entry address, | |
5854 | so ignore any addend record in the original rela entry. */ | |
5855 | signed_addend = 0; | |
5856 | } | |
a06ea964 | 5857 | } |
652afeef TC |
5858 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
5859 | place, value, | |
caed7120 | 5860 | signed_addend, weak_undef_p); |
0a1b45a2 | 5861 | *unresolved_reloc_p = false; |
a06ea964 NC |
5862 | break; |
5863 | ||
dcbd20eb JW |
5864 | case BFD_RELOC_AARCH64_16_PCREL: |
5865 | case BFD_RELOC_AARCH64_32_PCREL: | |
5866 | case BFD_RELOC_AARCH64_64_PCREL: | |
ce336788 JW |
5867 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
5868 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
5869 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
5870 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
1daf502a RL |
5871 | case BFD_RELOC_AARCH64_MOVW_PREL_G0: |
5872 | case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC: | |
5873 | case BFD_RELOC_AARCH64_MOVW_PREL_G1: | |
5874 | case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC: | |
5875 | case BFD_RELOC_AARCH64_MOVW_PREL_G2: | |
5876 | case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC: | |
5877 | case BFD_RELOC_AARCH64_MOVW_PREL_G3: | |
0e1862bb | 5878 | if (bfd_link_pic (info) |
dcbd20eb JW |
5879 | && (input_section->flags & SEC_ALLOC) != 0 |
5880 | && (input_section->flags & SEC_READONLY) != 0 | |
d68f1976 | 5881 | && !SYMBOL_REFERENCES_LOCAL (info, h)) |
dcbd20eb JW |
5882 | { |
5883 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
5884 | ||
4eca0228 | 5885 | _bfd_error_handler |
695344c0 | 5886 | /* xgettext:c-format */ |
871b3ab2 | 5887 | (_("%pB: relocation %s against symbol `%s' which may bind " |
d68f1976 JW |
5888 | "externally can not be used when making a shared object; " |
5889 | "recompile with -fPIC"), | |
dcbd20eb JW |
5890 | input_bfd, elfNN_aarch64_howto_table[howto_index].name, |
5891 | h->root.root.string); | |
5892 | bfd_set_error (bfd_error_bad_value); | |
1d75a8e2 | 5893 | return bfd_reloc_notsupported; |
dcbd20eb | 5894 | } |
c7cd2917 SP |
5895 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
5896 | place, value, | |
5897 | signed_addend, | |
5898 | weak_undef_p); | |
5899 | break; | |
5900 | ||
5901 | case BFD_RELOC_AARCH64_BRANCH19: | |
5902 | case BFD_RELOC_AARCH64_TSTBR14: | |
5903 | if (h && h->root.type == bfd_link_hash_undefined) | |
5904 | { | |
5905 | _bfd_error_handler | |
5906 | /* xgettext:c-format */ | |
5907 | (_("%pB: conditional branch to undefined symbol `%s' " | |
5908 | "not allowed"), input_bfd, h->root.root.string); | |
5909 | bfd_set_error (bfd_error_bad_value); | |
5910 | return bfd_reloc_notsupported; | |
5911 | } | |
1a0670f3 | 5912 | /* Fall through. */ |
dcbd20eb | 5913 | |
a6bb11b2 | 5914 | case BFD_RELOC_AARCH64_16: |
92d77487 RL |
5915 | #if ARCH_SIZE == 64 |
5916 | case BFD_RELOC_AARCH64_32: | |
5917 | #endif | |
a6bb11b2 | 5918 | case BFD_RELOC_AARCH64_ADD_LO12: |
ce336788 | 5919 | case BFD_RELOC_AARCH64_LDST128_LO12: |
a6bb11b2 YZ |
5920 | case BFD_RELOC_AARCH64_LDST16_LO12: |
5921 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
5922 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
ce336788 | 5923 | case BFD_RELOC_AARCH64_LDST8_LO12: |
a6bb11b2 YZ |
5924 | case BFD_RELOC_AARCH64_MOVW_G0: |
5925 | case BFD_RELOC_AARCH64_MOVW_G0_NC: | |
ce336788 | 5926 | case BFD_RELOC_AARCH64_MOVW_G0_S: |
a6bb11b2 YZ |
5927 | case BFD_RELOC_AARCH64_MOVW_G1: |
5928 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
ce336788 | 5929 | case BFD_RELOC_AARCH64_MOVW_G1_S: |
a6bb11b2 YZ |
5930 | case BFD_RELOC_AARCH64_MOVW_G2: |
5931 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
ce336788 | 5932 | case BFD_RELOC_AARCH64_MOVW_G2_S: |
a6bb11b2 | 5933 | case BFD_RELOC_AARCH64_MOVW_G3: |
652afeef TC |
5934 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
5935 | place, value, | |
caed7120 | 5936 | signed_addend, weak_undef_p); |
a06ea964 NC |
5937 | break; |
5938 | ||
a6bb11b2 YZ |
5939 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
5940 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 5941 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 5942 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 5943 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 5944 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
2aff25ba JW |
5945 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
5946 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: | |
5947 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: | |
a06ea964 NC |
5948 | if (globals->root.sgot == NULL) |
5949 | BFD_ASSERT (h != NULL); | |
5950 | ||
0a1b45a2 | 5951 | relative_reloc = false; |
a06ea964 NC |
5952 | if (h != NULL) |
5953 | { | |
99ad26cb | 5954 | bfd_vma addend = 0; |
ff07562f JW |
5955 | |
5956 | /* If a symbol is not dynamic and is not undefined weak, bind it | |
5957 | locally and generate a RELATIVE relocation under PIC mode. | |
5958 | ||
5959 | NOTE: one symbol may be referenced by several relocations, we | |
5960 | should only generate one RELATIVE relocation for that symbol. | |
5961 | Therefore, check GOT offset mark first. */ | |
5962 | if (h->dynindx == -1 | |
5963 | && !h->forced_local | |
5964 | && h->root.type != bfd_link_hash_undefweak | |
5965 | && bfd_link_pic (info) | |
5966 | && !symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
0a1b45a2 | 5967 | relative_reloc = true; |
ff07562f | 5968 | |
a06ea964 NC |
5969 | value = aarch64_calculate_got_entry_vma (h, globals, info, value, |
5970 | output_bfd, | |
5971 | unresolved_reloc_p); | |
ff07562f JW |
5972 | /* Record the GOT entry address which will be used when generating |
5973 | RELATIVE relocation. */ | |
5974 | if (relative_reloc) | |
5975 | got_entry_addr = value; | |
5976 | ||
2aff25ba | 5977 | if (aarch64_relocation_aginst_gp_p (bfd_r_type)) |
99ad26cb JW |
5978 | addend = (globals->root.sgot->output_section->vma |
5979 | + globals->root.sgot->output_offset); | |
652afeef TC |
5980 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
5981 | place, value, | |
99ad26cb | 5982 | addend, weak_undef_p); |
a06ea964 | 5983 | } |
b53b1bed JW |
5984 | else |
5985 | { | |
99ad26cb | 5986 | bfd_vma addend = 0; |
b53b1bed JW |
5987 | struct elf_aarch64_local_symbol *locals |
5988 | = elf_aarch64_locals (input_bfd); | |
5989 | ||
5990 | if (locals == NULL) | |
5991 | { | |
5992 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
4eca0228 | 5993 | _bfd_error_handler |
695344c0 | 5994 | /* xgettext:c-format */ |
90b6238f | 5995 | (_("%pB: local symbol descriptor table be NULL when applying " |
b53b1bed JW |
5996 | "relocation %s against local symbol"), |
5997 | input_bfd, elfNN_aarch64_howto_table[howto_index].name); | |
5998 | abort (); | |
5999 | } | |
6000 | ||
6001 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
6002 | base_got = globals->root.sgot; | |
ff07562f JW |
6003 | got_entry_addr = (base_got->output_section->vma |
6004 | + base_got->output_offset + off); | |
b53b1bed JW |
6005 | |
6006 | if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
6007 | { | |
6008 | bfd_put_64 (output_bfd, value, base_got->contents + off); | |
6009 | ||
ff07562f JW |
6010 | /* For local symbol, we have done absolute relocation in static |
6011 | linking stage. While for shared library, we need to update the | |
6012 | content of GOT entry according to the shared object's runtime | |
6013 | base address. So, we need to generate a R_AARCH64_RELATIVE reloc | |
6014 | for dynamic linker. */ | |
0e1862bb | 6015 | if (bfd_link_pic (info)) |
0a1b45a2 | 6016 | relative_reloc = true; |
b53b1bed JW |
6017 | |
6018 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
6019 | } | |
6020 | ||
6021 | /* Update the relocation value to GOT entry addr as we have transformed | |
6022 | the direct data access into indirect data access through GOT. */ | |
6023 | value = got_entry_addr; | |
99ad26cb | 6024 | |
2aff25ba | 6025 | if (aarch64_relocation_aginst_gp_p (bfd_r_type)) |
99ad26cb JW |
6026 | addend = base_got->output_section->vma + base_got->output_offset; |
6027 | ||
652afeef TC |
6028 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
6029 | place, value, | |
99ad26cb | 6030 | addend, weak_undef_p); |
b53b1bed | 6031 | } |
ff07562f JW |
6032 | |
6033 | if (relative_reloc) | |
6034 | { | |
6035 | asection *s; | |
6036 | Elf_Internal_Rela outrel; | |
6037 | ||
6038 | s = globals->root.srelgot; | |
6039 | if (s == NULL) | |
6040 | abort (); | |
6041 | ||
6042 | outrel.r_offset = got_entry_addr; | |
6043 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); | |
6044 | outrel.r_addend = orig_value; | |
6045 | elf_append_rela (output_bfd, s, &outrel); | |
6046 | } | |
a2e1db00 RL |
6047 | break; |
6048 | ||
ce336788 | 6049 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 6050 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 6051 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 6052 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 6053 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 6054 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 6055 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
73f925cc | 6056 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 6057 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 6058 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
6059 | if (globals->root.sgot == NULL) |
6060 | return bfd_reloc_notsupported; | |
6061 | ||
6062 | value = (symbol_got_offset (input_bfd, h, r_symndx) | |
6063 | + globals->root.sgot->output_section->vma | |
f44a1f8e | 6064 | + globals->root.sgot->output_offset); |
a06ea964 | 6065 | |
652afeef TC |
6066 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
6067 | place, value, | |
caed7120 | 6068 | 0, weak_undef_p); |
0a1b45a2 | 6069 | *unresolved_reloc_p = false; |
a06ea964 NC |
6070 | break; |
6071 | ||
7ba7cfe4 | 6072 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 6073 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
3b957e5b RL |
6074 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
6075 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
94facae3 RL |
6076 | if (globals->root.sgot == NULL) |
6077 | return bfd_reloc_notsupported; | |
6078 | ||
6079 | value = symbol_got_offset (input_bfd, h, r_symndx); | |
652afeef TC |
6080 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
6081 | place, value, | |
94facae3 | 6082 | 0, weak_undef_p); |
0a1b45a2 | 6083 | *unresolved_reloc_p = false; |
94facae3 RL |
6084 | break; |
6085 | ||
6ffe9a1b | 6086 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12: |
40fbed84 | 6087 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12: |
753999c1 | 6088 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC: |
07c9aa07 JW |
6089 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12: |
6090 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC: | |
6091 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12: | |
6092 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC: | |
6093 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12: | |
6094 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC: | |
6095 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12: | |
6096 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC: | |
6ffe9a1b JW |
6097 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0: |
6098 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC: | |
6099 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1: | |
6100 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC: | |
6101 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2: | |
652afeef TC |
6102 | { |
6103 | if (!(weak_undef_p || elf_hash_table (info)->tls_sec)) | |
6104 | { | |
6105 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
6106 | _bfd_error_handler | |
6107 | /* xgettext:c-format */ | |
6108 | (_("%pB: TLS relocation %s against undefined symbol `%s'"), | |
6109 | input_bfd, elfNN_aarch64_howto_table[howto_index].name, | |
6110 | h->root.root.string); | |
6111 | bfd_set_error (bfd_error_bad_value); | |
6112 | return bfd_reloc_notsupported; | |
6113 | } | |
6114 | ||
6115 | bfd_vma def_value | |
6116 | = weak_undef_p ? 0 : signed_addend - dtpoff_base (info); | |
6117 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, | |
6118 | place, value, | |
6119 | def_value, weak_undef_p); | |
6120 | break; | |
6121 | } | |
40fbed84 | 6122 | |
a6bb11b2 YZ |
6123 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
6124 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: | |
6125 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: | |
e04ef022 RL |
6126 | case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12: |
6127 | case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC: | |
6128 | case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12: | |
6129 | case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC: | |
6130 | case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12: | |
6131 | case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC: | |
6132 | case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12: | |
6133 | case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC: | |
a6bb11b2 YZ |
6134 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: |
6135 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
6136 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: | |
6137 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
6138 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
652afeef TC |
6139 | { |
6140 | if (!(weak_undef_p || elf_hash_table (info)->tls_sec)) | |
6141 | { | |
6142 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
6143 | _bfd_error_handler | |
6144 | /* xgettext:c-format */ | |
6145 | (_("%pB: TLS relocation %s against undefined symbol `%s'"), | |
6146 | input_bfd, elfNN_aarch64_howto_table[howto_index].name, | |
6147 | h->root.root.string); | |
6148 | bfd_set_error (bfd_error_bad_value); | |
6149 | return bfd_reloc_notsupported; | |
6150 | } | |
6151 | ||
6152 | bfd_vma def_value | |
6153 | = weak_undef_p ? 0 : signed_addend - tpoff_base (info); | |
6154 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, | |
6155 | place, value, | |
6156 | def_value, weak_undef_p); | |
0a1b45a2 | 6157 | *unresolved_reloc_p = false; |
652afeef TC |
6158 | break; |
6159 | } | |
a06ea964 | 6160 | |
f955cccf | 6161 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 6162 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 6163 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 6164 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
f955cccf | 6165 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
1ada945d | 6166 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
6167 | if (globals->root.sgot == NULL) |
6168 | return bfd_reloc_notsupported; | |
a06ea964 NC |
6169 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) |
6170 | + globals->root.sgotplt->output_section->vma | |
f44a1f8e | 6171 | + globals->root.sgotplt->output_offset |
a06ea964 NC |
6172 | + globals->sgotplt_jump_table_size); |
6173 | ||
652afeef TC |
6174 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
6175 | place, value, | |
caed7120 | 6176 | 0, weak_undef_p); |
0a1b45a2 | 6177 | *unresolved_reloc_p = false; |
a06ea964 NC |
6178 | break; |
6179 | ||
0484b454 RL |
6180 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
6181 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
6182 | if (globals->root.sgot == NULL) | |
6183 | return bfd_reloc_notsupported; | |
6184 | ||
6185 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) | |
6186 | + globals->root.sgotplt->output_section->vma | |
6187 | + globals->root.sgotplt->output_offset | |
6188 | + globals->sgotplt_jump_table_size); | |
6189 | ||
6190 | value -= (globals->root.sgot->output_section->vma | |
6191 | + globals->root.sgot->output_offset); | |
6192 | ||
652afeef TC |
6193 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
6194 | place, value, | |
0484b454 | 6195 | 0, weak_undef_p); |
0a1b45a2 | 6196 | *unresolved_reloc_p = false; |
0484b454 RL |
6197 | break; |
6198 | ||
a06ea964 NC |
6199 | default: |
6200 | return bfd_reloc_notsupported; | |
6201 | } | |
6202 | ||
6203 | if (saved_addend) | |
6204 | *saved_addend = value; | |
6205 | ||
6206 | /* Only apply the final relocation in a sequence. */ | |
6207 | if (save_addend) | |
6208 | return bfd_reloc_continue; | |
6209 | ||
caed7120 YZ |
6210 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, |
6211 | howto, value); | |
a06ea964 NC |
6212 | } |
6213 | ||
2d0ca824 YN |
6214 | /* LP64 and ILP32 operates on x- and w-registers respectively. |
6215 | Next definitions take into account the difference between | |
6216 | corresponding machine codes. R means x-register if the target | |
6217 | arch is LP64, and w-register if the target is ILP32. */ | |
6218 | ||
6219 | #if ARCH_SIZE == 64 | |
6220 | # define add_R0_R0 (0x91000000) | |
6221 | # define add_R0_R0_R1 (0x8b000020) | |
6222 | # define add_R0_R1 (0x91400020) | |
6223 | # define ldr_R0 (0x58000000) | |
6224 | # define ldr_R0_mask(i) (i & 0xffffffe0) | |
6225 | # define ldr_R0_x0 (0xf9400000) | |
6226 | # define ldr_hw_R0 (0xf2a00000) | |
6227 | # define movk_R0 (0xf2800000) | |
6228 | # define movz_R0 (0xd2a00000) | |
6229 | # define movz_hw_R0 (0xd2c00000) | |
6230 | #else /*ARCH_SIZE == 32 */ | |
6231 | # define add_R0_R0 (0x11000000) | |
6232 | # define add_R0_R0_R1 (0x0b000020) | |
6233 | # define add_R0_R1 (0x11400020) | |
6234 | # define ldr_R0 (0x18000000) | |
6235 | # define ldr_R0_mask(i) (i & 0xbfffffe0) | |
6236 | # define ldr_R0_x0 (0xb9400000) | |
6237 | # define ldr_hw_R0 (0x72a00000) | |
6238 | # define movk_R0 (0x72800000) | |
6239 | # define movz_R0 (0x52a00000) | |
6240 | # define movz_hw_R0 (0x52c00000) | |
6241 | #endif | |
6242 | ||
9fca35fc TC |
6243 | /* Structure to hold payload for _bfd_aarch64_erratum_843419_clear_stub, |
6244 | it is used to identify the stub information to reset. */ | |
6245 | ||
6246 | struct erratum_843419_branch_to_stub_clear_data | |
6247 | { | |
6248 | bfd_vma adrp_offset; | |
6249 | asection *output_section; | |
6250 | }; | |
6251 | ||
6252 | /* Clear the erratum information for GEN_ENTRY if the ADRP_OFFSET and | |
6253 | section inside IN_ARG matches. The clearing is done by setting the | |
6254 | stub_type to none. */ | |
6255 | ||
0a1b45a2 | 6256 | static bool |
9fca35fc TC |
6257 | _bfd_aarch64_erratum_843419_clear_stub (struct bfd_hash_entry *gen_entry, |
6258 | void *in_arg) | |
6259 | { | |
6260 | struct elf_aarch64_stub_hash_entry *stub_entry | |
6261 | = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
6262 | struct erratum_843419_branch_to_stub_clear_data *data | |
6263 | = (struct erratum_843419_branch_to_stub_clear_data *) in_arg; | |
6264 | ||
6265 | if (stub_entry->target_section != data->output_section | |
6266 | || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer | |
6267 | || stub_entry->adrp_offset != data->adrp_offset) | |
0a1b45a2 | 6268 | return true; |
9fca35fc TC |
6269 | |
6270 | /* Change the stub type instead of removing the entry, removing from the hash | |
6271 | table would be slower and we have already reserved the memory for the entry | |
6272 | so there wouldn't be much gain. Changing the stub also keeps around a | |
6273 | record of what was there before. */ | |
6274 | stub_entry->stub_type = aarch64_stub_none; | |
6275 | ||
6276 | /* We're done and there could have been only one matching stub at that | |
6277 | particular offset, so abort further traversal. */ | |
0a1b45a2 | 6278 | return false; |
9fca35fc TC |
6279 | } |
6280 | ||
6281 | /* TLS Relaxations may relax an adrp sequence that matches the erratum 843419 | |
6282 | sequence. In this case the erratum no longer applies and we need to remove | |
6283 | the entry from the pending stub generation. This clears matching adrp insn | |
6284 | at ADRP_OFFSET in INPUT_SECTION in the stub table defined in GLOBALS. */ | |
6285 | ||
6286 | static void | |
6287 | clear_erratum_843419_entry (struct elf_aarch64_link_hash_table *globals, | |
6288 | bfd_vma adrp_offset, asection *input_section) | |
6289 | { | |
739b5c9c | 6290 | if (globals->fix_erratum_843419 & ERRAT_ADRP) |
9fca35fc TC |
6291 | { |
6292 | struct erratum_843419_branch_to_stub_clear_data data; | |
6293 | data.adrp_offset = adrp_offset; | |
6294 | data.output_section = input_section; | |
6295 | ||
6296 | bfd_hash_traverse (&globals->stub_hash_table, | |
6297 | _bfd_aarch64_erratum_843419_clear_stub, &data); | |
6298 | } | |
6299 | } | |
6300 | ||
a06ea964 NC |
6301 | /* Handle TLS relaxations. Relaxing is possible for symbols that use |
6302 | R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static | |
6303 | link. | |
6304 | ||
6305 | Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller | |
6306 | is to then call final_link_relocate. Return other values in the | |
6307 | case of error. */ | |
6308 | ||
6309 | static bfd_reloc_status_type | |
cec5225b | 6310 | elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals, |
9fca35fc TC |
6311 | bfd *input_bfd, asection *input_section, |
6312 | bfd_byte *contents, Elf_Internal_Rela *rel, | |
6313 | struct elf_link_hash_entry *h) | |
a06ea964 | 6314 | { |
0a1b45a2 | 6315 | bool is_local = h == NULL; |
cec5225b | 6316 | unsigned int r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
6317 | unsigned long insn; |
6318 | ||
6319 | BFD_ASSERT (globals && input_bfd && contents && rel); | |
6320 | ||
0aa13fee | 6321 | switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type)) |
a06ea964 | 6322 | { |
a6bb11b2 | 6323 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 6324 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a06ea964 NC |
6325 | if (is_local) |
6326 | { | |
6327 | /* GD->LE relaxation: | |
2d0ca824 | 6328 | adrp x0, :tlsgd:var => movz R0, :tprel_g1:var |
a06ea964 | 6329 | or |
2d0ca824 YN |
6330 | adrp x0, :tlsdesc:var => movz R0, :tprel_g1:var |
6331 | ||
6332 | Where R is x for LP64, and w for ILP32. */ | |
6333 | bfd_putl32 (movz_R0, contents + rel->r_offset); | |
9fca35fc TC |
6334 | /* We have relaxed the adrp into a mov, we may have to clear any |
6335 | pending erratum fixes. */ | |
6336 | clear_erratum_843419_entry (globals, rel->r_offset, input_section); | |
a06ea964 NC |
6337 | return bfd_reloc_continue; |
6338 | } | |
6339 | else | |
6340 | { | |
6341 | /* GD->IE relaxation: | |
6342 | adrp x0, :tlsgd:var => adrp x0, :gottprel:var | |
6343 | or | |
6344 | adrp x0, :tlsdesc:var => adrp x0, :gottprel:var | |
6345 | */ | |
a06ea964 NC |
6346 | return bfd_reloc_continue; |
6347 | } | |
6348 | ||
389b8029 MS |
6349 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
6350 | BFD_ASSERT (0); | |
6351 | break; | |
6352 | ||
1ada945d MS |
6353 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
6354 | if (is_local) | |
6355 | { | |
6356 | /* Tiny TLSDESC->LE relaxation: | |
07d6d2b8 AM |
6357 | ldr x1, :tlsdesc:var => movz R0, #:tprel_g1:var |
6358 | adr x0, :tlsdesc:var => movk R0, #:tprel_g0_nc:var | |
1ada945d | 6359 | .tlsdesccall var |
07d6d2b8 | 6360 | blr x1 => nop |
2d0ca824 YN |
6361 | |
6362 | Where R is x for LP64, and w for ILP32. */ | |
1ada945d MS |
6363 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); |
6364 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
6365 | ||
6366 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
6367 | AARCH64_R (TLSLE_MOVW_TPREL_G0_NC)); | |
6368 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6369 | ||
2d0ca824 YN |
6370 | bfd_putl32 (movz_R0, contents + rel->r_offset); |
6371 | bfd_putl32 (movk_R0, contents + rel->r_offset + 4); | |
1ada945d MS |
6372 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); |
6373 | return bfd_reloc_continue; | |
6374 | } | |
6375 | else | |
6376 | { | |
6377 | /* Tiny TLSDESC->IE relaxation: | |
07d6d2b8 AM |
6378 | ldr x1, :tlsdesc:var => ldr x0, :gottprel:var |
6379 | adr x0, :tlsdesc:var => nop | |
1ada945d | 6380 | .tlsdesccall var |
07d6d2b8 | 6381 | blr x1 => nop |
1ada945d MS |
6382 | */ |
6383 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); | |
6384 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
6385 | ||
6386 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6387 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6388 | ||
2d0ca824 | 6389 | bfd_putl32 (ldr_R0, contents + rel->r_offset); |
1ada945d MS |
6390 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4); |
6391 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); | |
6392 | return bfd_reloc_continue; | |
6393 | } | |
6394 | ||
3c12b054 MS |
6395 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
6396 | if (is_local) | |
6397 | { | |
6398 | /* Tiny GD->LE relaxation: | |
07d6d2b8 AM |
6399 | adr x0, :tlsgd:var => mrs x1, tpidr_el0 |
6400 | bl __tls_get_addr => add R0, R1, #:tprel_hi12:x, lsl #12 | |
6401 | nop => add R0, R0, #:tprel_lo12_nc:x | |
2d0ca824 YN |
6402 | |
6403 | Where R is x for LP64, and x for Ilp32. */ | |
3c12b054 MS |
6404 | |
6405 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
6406 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6407 | ||
6408 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0); | |
2d0ca824 YN |
6409 | bfd_putl32 (add_R0_R1, contents + rel->r_offset + 4); |
6410 | bfd_putl32 (add_R0_R0, contents + rel->r_offset + 8); | |
3c12b054 MS |
6411 | |
6412 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
6413 | AARCH64_R (TLSLE_ADD_TPREL_LO12_NC)); | |
6414 | rel[1].r_offset = rel->r_offset + 8; | |
6415 | ||
6416 | /* Move the current relocation to the second instruction in | |
6417 | the sequence. */ | |
6418 | rel->r_offset += 4; | |
6419 | rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
6420 | AARCH64_R (TLSLE_ADD_TPREL_HI12)); | |
6421 | return bfd_reloc_continue; | |
6422 | } | |
6423 | else | |
6424 | { | |
6425 | /* Tiny GD->IE relaxation: | |
07d6d2b8 AM |
6426 | adr x0, :tlsgd:var => ldr R0, :gottprel:var |
6427 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6428 | nop => add R0, R0, R1 | |
2d0ca824 YN |
6429 | |
6430 | Where R is x for LP64, and w for Ilp32. */ | |
3c12b054 MS |
6431 | |
6432 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
6433 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6434 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6435 | ||
2d0ca824 | 6436 | bfd_putl32 (ldr_R0, contents + rel->r_offset); |
3c12b054 | 6437 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); |
2d0ca824 | 6438 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8); |
3c12b054 MS |
6439 | return bfd_reloc_continue; |
6440 | } | |
6441 | ||
ac734732 RL |
6442 | #if ARCH_SIZE == 64 |
6443 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: | |
6444 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSGD_MOVW_G0_NC)); | |
6445 | BFD_ASSERT (rel->r_offset + 12 == rel[2].r_offset); | |
6446 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (CALL26)); | |
6447 | ||
6448 | if (is_local) | |
6449 | { | |
6450 | /* Large GD->LE relaxation: | |
07d6d2b8 | 6451 | movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32 |
ac734732 | 6452 | movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16 |
07d6d2b8 AM |
6453 | add x0, gp, x0 => movk x0, #:tprel_g0_nc:var |
6454 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6455 | nop => add x0, x0, x1 | |
ac734732 RL |
6456 | */ |
6457 | rel[2].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
6458 | AARCH64_R (TLSLE_MOVW_TPREL_G0_NC)); | |
6459 | rel[2].r_offset = rel->r_offset + 8; | |
6460 | ||
2d0ca824 YN |
6461 | bfd_putl32 (movz_hw_R0, contents + rel->r_offset + 0); |
6462 | bfd_putl32 (ldr_hw_R0, contents + rel->r_offset + 4); | |
6463 | bfd_putl32 (movk_R0, contents + rel->r_offset + 8); | |
ac734732 | 6464 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12); |
2d0ca824 | 6465 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16); |
ac734732 RL |
6466 | } |
6467 | else | |
6468 | { | |
6469 | /* Large GD->IE relaxation: | |
07d6d2b8 | 6470 | movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16 |
ac734732 | 6471 | movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var |
07d6d2b8 AM |
6472 | add x0, gp, x0 => ldr x0, [gp, x0] |
6473 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6474 | nop => add x0, x0, x1 | |
ac734732 RL |
6475 | */ |
6476 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6477 | bfd_putl32 (0xd2a80000, contents + rel->r_offset + 0); | |
2d0ca824 | 6478 | bfd_putl32 (ldr_R0, contents + rel->r_offset + 8); |
ac734732 | 6479 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12); |
2d0ca824 | 6480 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16); |
ac734732 RL |
6481 | } |
6482 | return bfd_reloc_continue; | |
6483 | ||
6484 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: | |
6485 | return bfd_reloc_continue; | |
6486 | #endif | |
6487 | ||
043bf05a MS |
6488 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
6489 | return bfd_reloc_continue; | |
6490 | ||
a6bb11b2 | 6491 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
a06ea964 NC |
6492 | if (is_local) |
6493 | { | |
6494 | /* GD->LE relaxation: | |
6495 | ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var | |
2d0ca824 YN |
6496 | |
6497 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
6498 | bfd_putl32 (movk_R0, contents + rel->r_offset); | |
a06ea964 NC |
6499 | return bfd_reloc_continue; |
6500 | } | |
6501 | else | |
6502 | { | |
6503 | /* GD->IE relaxation: | |
2d0ca824 YN |
6504 | ldr xd, [x0, #:tlsdesc_lo12:var] => ldr R0, [x0, #:gottprel_lo12:var] |
6505 | ||
6506 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 | 6507 | insn = bfd_getl32 (contents + rel->r_offset); |
2d0ca824 | 6508 | bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset); |
a06ea964 NC |
6509 | return bfd_reloc_continue; |
6510 | } | |
6511 | ||
a6bb11b2 | 6512 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a06ea964 NC |
6513 | if (is_local) |
6514 | { | |
6515 | /* GD->LE relaxation | |
07d6d2b8 AM |
6516 | add x0, #:tlsgd_lo12:var => movk R0, :tprel_g0_nc:var |
6517 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6518 | nop => add R0, R1, R0 | |
2d0ca824 YN |
6519 | |
6520 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 NC |
6521 | |
6522 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
6523 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
cec5225b | 6524 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 | 6525 | |
2d0ca824 | 6526 | bfd_putl32 (movk_R0, contents + rel->r_offset); |
a06ea964 | 6527 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); |
2d0ca824 | 6528 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8); |
a06ea964 NC |
6529 | return bfd_reloc_continue; |
6530 | } | |
6531 | else | |
6532 | { | |
6533 | /* GD->IE relaxation | |
07d6d2b8 AM |
6534 | ADD x0, #:tlsgd_lo12:var => ldr R0, [x0, #:gottprel_lo12:var] |
6535 | BL __tls_get_addr => mrs x1, tpidr_el0 | |
a06ea964 | 6536 | R_AARCH64_CALL26 |
07d6d2b8 | 6537 | NOP => add R0, R1, R0 |
5cd1d8bc YN |
6538 | |
6539 | Where R is x for lp64 mode, and w for ilp32 mode. */ | |
a06ea964 | 6540 | |
a6bb11b2 | 6541 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); |
a06ea964 NC |
6542 | |
6543 | /* Remove the relocation on the BL instruction. */ | |
cec5225b | 6544 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 | 6545 | |
a06ea964 NC |
6546 | /* We choose to fixup the BL and NOP instructions using the |
6547 | offset from the second relocation to allow flexibility in | |
6548 | scheduling instructions between the ADD and BL. */ | |
2d0ca824 | 6549 | bfd_putl32 (ldr_R0_x0, contents + rel->r_offset); |
5cd1d8bc | 6550 | bfd_putl32 (0xd53bd041, contents + rel[1].r_offset); |
2d0ca824 | 6551 | bfd_putl32 (add_R0_R0_R1, contents + rel[1].r_offset + 4); |
a06ea964 NC |
6552 | return bfd_reloc_continue; |
6553 | } | |
6554 | ||
0484b454 | 6555 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
f955cccf | 6556 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 6557 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a06ea964 | 6558 | /* GD->IE/LE relaxation: |
07d6d2b8 AM |
6559 | add x0, x0, #:tlsdesc_lo12:var => nop |
6560 | blr xd => nop | |
a06ea964 NC |
6561 | */ |
6562 | bfd_putl32 (INSN_NOP, contents + rel->r_offset); | |
6563 | return bfd_reloc_ok; | |
6564 | ||
0484b454 RL |
6565 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
6566 | if (is_local) | |
6567 | { | |
6568 | /* GD->LE relaxation: | |
2d0ca824 YN |
6569 | ldr xd, [gp, xn] => movk R0, #:tprel_g0_nc:var |
6570 | ||
6571 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
6572 | bfd_putl32 (movk_R0, contents + rel->r_offset); | |
0484b454 RL |
6573 | return bfd_reloc_continue; |
6574 | } | |
6575 | else | |
6576 | { | |
6577 | /* GD->IE relaxation: | |
2d0ca824 YN |
6578 | ldr xd, [gp, xn] => ldr R0, [gp, xn] |
6579 | ||
6580 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
0484b454 | 6581 | insn = bfd_getl32 (contents + rel->r_offset); |
2d0ca824 | 6582 | bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset); |
0484b454 RL |
6583 | return bfd_reloc_ok; |
6584 | } | |
6585 | ||
6586 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
6587 | /* GD->LE relaxation: | |
2d0ca824 | 6588 | movk xd, #:tlsdesc_off_g0_nc:var => movk R0, #:tprel_g1_nc:var, lsl #16 |
0484b454 | 6589 | GD->IE relaxation: |
2d0ca824 YN |
6590 | movk xd, #:tlsdesc_off_g0_nc:var => movk Rd, #:gottprel_g0_nc:var |
6591 | ||
6592 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
0484b454 | 6593 | if (is_local) |
2d0ca824 | 6594 | bfd_putl32 (ldr_hw_R0, contents + rel->r_offset); |
0484b454 RL |
6595 | return bfd_reloc_continue; |
6596 | ||
6597 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
6598 | if (is_local) | |
6599 | { | |
6600 | /* GD->LE relaxation: | |
2d0ca824 YN |
6601 | movz xd, #:tlsdesc_off_g1:var => movz R0, #:tprel_g2:var, lsl #32 |
6602 | ||
6603 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
6604 | bfd_putl32 (movz_hw_R0, contents + rel->r_offset); | |
0484b454 RL |
6605 | return bfd_reloc_continue; |
6606 | } | |
6607 | else | |
6608 | { | |
6609 | /* GD->IE relaxation: | |
2d0ca824 YN |
6610 | movz xd, #:tlsdesc_off_g1:var => movz Rd, #:gottprel_g1:var, lsl #16 |
6611 | ||
6612 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
0484b454 | 6613 | insn = bfd_getl32 (contents + rel->r_offset); |
2d0ca824 | 6614 | bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset); |
0484b454 RL |
6615 | return bfd_reloc_continue; |
6616 | } | |
6617 | ||
a6bb11b2 | 6618 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a06ea964 | 6619 | /* IE->LE relaxation: |
07d6d2b8 | 6620 | adrp xd, :gottprel:var => movz Rd, :tprel_g1:var |
2d0ca824 YN |
6621 | |
6622 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 NC |
6623 | if (is_local) |
6624 | { | |
6625 | insn = bfd_getl32 (contents + rel->r_offset); | |
2d0ca824 | 6626 | bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset); |
9fca35fc TC |
6627 | /* We have relaxed the adrp into a mov, we may have to clear any |
6628 | pending erratum fixes. */ | |
6629 | clear_erratum_843419_entry (globals, rel->r_offset, input_section); | |
a06ea964 NC |
6630 | } |
6631 | return bfd_reloc_continue; | |
6632 | ||
a6bb11b2 | 6633 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: |
a06ea964 | 6634 | /* IE->LE relaxation: |
07d6d2b8 | 6635 | ldr xd, [xm, #:gottprel_lo12:var] => movk Rd, :tprel_g0_nc:var |
2d0ca824 YN |
6636 | |
6637 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 NC |
6638 | if (is_local) |
6639 | { | |
6640 | insn = bfd_getl32 (contents + rel->r_offset); | |
2d0ca824 | 6641 | bfd_putl32 (movk_R0 | (insn & 0x1f), contents + rel->r_offset); |
a06ea964 NC |
6642 | } |
6643 | return bfd_reloc_continue; | |
6644 | ||
259364ad JW |
6645 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
6646 | /* LD->LE relaxation (tiny): | |
6647 | adr x0, :tlsldm:x => mrs x0, tpidr_el0 | |
c1fc2d7e YN |
6648 | bl __tls_get_addr => add R0, R0, TCB_SIZE |
6649 | ||
6650 | Where R is x for lp64 mode, and w for ilp32 mode. */ | |
259364ad JW |
6651 | if (is_local) |
6652 | { | |
6653 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6654 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); | |
6655 | /* No need of CALL26 relocation for tls_get_addr. */ | |
6656 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6657 | bfd_putl32 (0xd53bd040, contents + rel->r_offset + 0); | |
2d0ca824 YN |
6658 | bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10), |
6659 | contents + rel->r_offset + 4); | |
259364ad JW |
6660 | return bfd_reloc_ok; |
6661 | } | |
6662 | return bfd_reloc_continue; | |
6663 | ||
6664 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: | |
6665 | /* LD->LE relaxation (small): | |
6666 | adrp x0, :tlsldm:x => mrs x0, tpidr_el0 | |
6667 | */ | |
6668 | if (is_local) | |
6669 | { | |
6670 | bfd_putl32 (0xd53bd040, contents + rel->r_offset); | |
6671 | return bfd_reloc_ok; | |
6672 | } | |
6673 | return bfd_reloc_continue; | |
6674 | ||
6675 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: | |
6676 | /* LD->LE relaxation (small): | |
c1fc2d7e | 6677 | add x0, #:tlsldm_lo12:x => add R0, R0, TCB_SIZE |
259364ad | 6678 | bl __tls_get_addr => nop |
c1fc2d7e YN |
6679 | |
6680 | Where R is x for lp64 mode, and w for ilp32 mode. */ | |
259364ad JW |
6681 | if (is_local) |
6682 | { | |
6683 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6684 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); | |
6685 | /* No need of CALL26 relocation for tls_get_addr. */ | |
6686 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
2d0ca824 YN |
6687 | bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10), |
6688 | contents + rel->r_offset + 0); | |
c1fc2d7e | 6689 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4); |
259364ad JW |
6690 | return bfd_reloc_ok; |
6691 | } | |
6692 | return bfd_reloc_continue; | |
6693 | ||
a06ea964 NC |
6694 | default: |
6695 | return bfd_reloc_continue; | |
6696 | } | |
6697 | ||
6698 | return bfd_reloc_ok; | |
6699 | } | |
6700 | ||
6701 | /* Relocate an AArch64 ELF section. */ | |
6702 | ||
0f684201 | 6703 | static int |
cec5225b | 6704 | elfNN_aarch64_relocate_section (bfd *output_bfd, |
a06ea964 NC |
6705 | struct bfd_link_info *info, |
6706 | bfd *input_bfd, | |
6707 | asection *input_section, | |
6708 | bfd_byte *contents, | |
6709 | Elf_Internal_Rela *relocs, | |
6710 | Elf_Internal_Sym *local_syms, | |
6711 | asection **local_sections) | |
6712 | { | |
6713 | Elf_Internal_Shdr *symtab_hdr; | |
6714 | struct elf_link_hash_entry **sym_hashes; | |
6715 | Elf_Internal_Rela *rel; | |
6716 | Elf_Internal_Rela *relend; | |
6717 | const char *name; | |
cec5225b | 6718 | struct elf_aarch64_link_hash_table *globals; |
0a1b45a2 | 6719 | bool save_addend = false; |
a06ea964 NC |
6720 | bfd_vma addend = 0; |
6721 | ||
cec5225b | 6722 | globals = elf_aarch64_hash_table (info); |
a06ea964 NC |
6723 | |
6724 | symtab_hdr = &elf_symtab_hdr (input_bfd); | |
6725 | sym_hashes = elf_sym_hashes (input_bfd); | |
6726 | ||
6727 | rel = relocs; | |
6728 | relend = relocs + input_section->reloc_count; | |
6729 | for (; rel < relend; rel++) | |
6730 | { | |
6731 | unsigned int r_type; | |
a6bb11b2 YZ |
6732 | bfd_reloc_code_real_type bfd_r_type; |
6733 | bfd_reloc_code_real_type relaxed_bfd_r_type; | |
a06ea964 NC |
6734 | reloc_howto_type *howto; |
6735 | unsigned long r_symndx; | |
6736 | Elf_Internal_Sym *sym; | |
6737 | asection *sec; | |
6738 | struct elf_link_hash_entry *h; | |
6739 | bfd_vma relocation; | |
6740 | bfd_reloc_status_type r; | |
6741 | arelent bfd_reloc; | |
6742 | char sym_type; | |
0a1b45a2 | 6743 | bool unresolved_reloc = false; |
a06ea964 NC |
6744 | char *error_message = NULL; |
6745 | ||
cec5225b YZ |
6746 | r_symndx = ELFNN_R_SYM (rel->r_info); |
6747 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 | 6748 | |
0aa13fee AM |
6749 | bfd_reloc.howto = elfNN_aarch64_howto_from_type (input_bfd, r_type); |
6750 | howto = bfd_reloc.howto; | |
a06ea964 | 6751 | |
7fcfd62d | 6752 | if (howto == NULL) |
47aeb64c NC |
6753 | return _bfd_unrecognized_reloc (input_bfd, input_section, r_type); |
6754 | ||
a6bb11b2 | 6755 | bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto); |
7fcfd62d | 6756 | |
a06ea964 NC |
6757 | h = NULL; |
6758 | sym = NULL; | |
6759 | sec = NULL; | |
6760 | ||
6761 | if (r_symndx < symtab_hdr->sh_info) | |
6762 | { | |
6763 | sym = local_syms + r_symndx; | |
cec5225b | 6764 | sym_type = ELFNN_ST_TYPE (sym->st_info); |
a06ea964 NC |
6765 | sec = local_sections[r_symndx]; |
6766 | ||
6767 | /* An object file might have a reference to a local | |
6768 | undefined symbol. This is a daft object file, but we | |
6769 | should at least do something about it. */ | |
6770 | if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL | |
6771 | && bfd_is_und_section (sec) | |
6772 | && ELF_ST_BIND (sym->st_info) != STB_WEAK) | |
1a72702b AM |
6773 | (*info->callbacks->undefined_symbol) |
6774 | (info, bfd_elf_string_from_elf_section | |
6775 | (input_bfd, symtab_hdr->sh_link, sym->st_name), | |
0a1b45a2 | 6776 | input_bfd, input_section, rel->r_offset, true); |
a06ea964 | 6777 | |
a06ea964 | 6778 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
1419bbe5 WN |
6779 | |
6780 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
0e1862bb | 6781 | if (!bfd_link_relocatable (info) |
1419bbe5 WN |
6782 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
6783 | { | |
6784 | h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd, | |
0a1b45a2 | 6785 | rel, false); |
1419bbe5 WN |
6786 | if (h == NULL) |
6787 | abort (); | |
6788 | ||
6789 | /* Set STT_GNU_IFUNC symbol value. */ | |
6790 | h->root.u.def.value = sym->st_value; | |
6791 | h->root.u.def.section = sec; | |
6792 | } | |
a06ea964 NC |
6793 | } |
6794 | else | |
6795 | { | |
0a1b45a2 | 6796 | bool warned, ignored; |
a06ea964 NC |
6797 | |
6798 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
6799 | r_symndx, symtab_hdr, sym_hashes, | |
6800 | h, sec, relocation, | |
62d887d4 | 6801 | unresolved_reloc, warned, ignored); |
a06ea964 NC |
6802 | |
6803 | sym_type = h->type; | |
6804 | } | |
6805 | ||
6806 | if (sec != NULL && discarded_section (sec)) | |
6807 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
6808 | rel, 1, relend, howto, 0, contents); | |
6809 | ||
0e1862bb | 6810 | if (bfd_link_relocatable (info)) |
2e0488d3 | 6811 | continue; |
a06ea964 NC |
6812 | |
6813 | if (h != NULL) | |
6814 | name = h->root.root.string; | |
6815 | else | |
6816 | { | |
6817 | name = (bfd_elf_string_from_elf_section | |
6818 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
6819 | if (name == NULL || *name == '\0') | |
fd361982 | 6820 | name = bfd_section_name (sec); |
a06ea964 NC |
6821 | } |
6822 | ||
6823 | if (r_symndx != 0 | |
6824 | && r_type != R_AARCH64_NONE | |
6825 | && r_type != R_AARCH64_NULL | |
6826 | && (h == NULL | |
6827 | || h->root.type == bfd_link_hash_defined | |
6828 | || h->root.type == bfd_link_hash_defweak) | |
a6bb11b2 | 6829 | && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS)) |
a06ea964 | 6830 | { |
4eca0228 | 6831 | _bfd_error_handler |
a06ea964 | 6832 | ((sym_type == STT_TLS |
695344c0 | 6833 | /* xgettext:c-format */ |
2dcf00ce | 6834 | ? _("%pB(%pA+%#" PRIx64 "): %s used with TLS symbol %s") |
695344c0 | 6835 | /* xgettext:c-format */ |
2dcf00ce | 6836 | : _("%pB(%pA+%#" PRIx64 "): %s used with non-TLS symbol %s")), |
a06ea964 | 6837 | input_bfd, |
2dcf00ce | 6838 | input_section, (uint64_t) rel->r_offset, howto->name, name); |
a06ea964 NC |
6839 | } |
6840 | ||
a06ea964 | 6841 | /* We relax only if we can see that there can be a valid transition |
07d6d2b8 AM |
6842 | from a reloc type to another. |
6843 | We call elfNN_aarch64_final_link_relocate unless we're completely | |
6844 | done, i.e., the relaxation produced the final output we want. */ | |
a06ea964 | 6845 | |
a6bb11b2 YZ |
6846 | relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, |
6847 | h, r_symndx); | |
6848 | if (relaxed_bfd_r_type != bfd_r_type) | |
a06ea964 | 6849 | { |
a6bb11b2 YZ |
6850 | bfd_r_type = relaxed_bfd_r_type; |
6851 | howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type); | |
6852 | BFD_ASSERT (howto != NULL); | |
6853 | r_type = howto->type; | |
9fca35fc TC |
6854 | r = elfNN_aarch64_tls_relax (globals, input_bfd, input_section, |
6855 | contents, rel, h); | |
a06ea964 NC |
6856 | unresolved_reloc = 0; |
6857 | } | |
6858 | else | |
6859 | r = bfd_reloc_continue; | |
6860 | ||
6861 | /* There may be multiple consecutive relocations for the | |
07d6d2b8 AM |
6862 | same offset. In that case we are supposed to treat the |
6863 | output of each relocation as the addend for the next. */ | |
a06ea964 NC |
6864 | if (rel + 1 < relend |
6865 | && rel->r_offset == rel[1].r_offset | |
cec5225b YZ |
6866 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE |
6867 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL) | |
0a1b45a2 | 6868 | save_addend = true; |
a06ea964 | 6869 | else |
0a1b45a2 | 6870 | save_addend = false; |
a06ea964 NC |
6871 | |
6872 | if (r == bfd_reloc_continue) | |
cec5225b | 6873 | r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd, |
a06ea964 NC |
6874 | input_section, contents, rel, |
6875 | relocation, info, sec, | |
6876 | h, &unresolved_reloc, | |
1419bbe5 | 6877 | save_addend, &addend, sym); |
a06ea964 | 6878 | |
0aa13fee | 6879 | switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type)) |
a06ea964 | 6880 | { |
ce336788 | 6881 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 6882 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 6883 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 6884 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 6885 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
73f925cc | 6886 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 6887 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 6888 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
6889 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
6890 | { | |
0a1b45a2 | 6891 | bool need_relocs = false; |
a06ea964 NC |
6892 | bfd_byte *loc; |
6893 | int indx; | |
6894 | bfd_vma off; | |
6895 | ||
6896 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
6897 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
6898 | ||
6899 | need_relocs = | |
6dda7875 | 6900 | (!bfd_link_executable (info) || indx != 0) && |
a06ea964 NC |
6901 | (h == NULL |
6902 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6903 | || h->root.type != bfd_link_hash_undefweak); | |
6904 | ||
6905 | BFD_ASSERT (globals->root.srelgot != NULL); | |
6906 | ||
6907 | if (need_relocs) | |
6908 | { | |
6909 | Elf_Internal_Rela rela; | |
a6bb11b2 | 6910 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD)); |
a06ea964 NC |
6911 | rela.r_addend = 0; |
6912 | rela.r_offset = globals->root.sgot->output_section->vma + | |
6913 | globals->root.sgot->output_offset + off; | |
6914 | ||
6915 | ||
6916 | loc = globals->root.srelgot->contents; | |
6917 | loc += globals->root.srelgot->reloc_count++ | |
6918 | * RELOC_SIZE (htab); | |
cec5225b | 6919 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 6920 | |
f69e4920 | 6921 | bfd_reloc_code_real_type real_type = |
0aa13fee | 6922 | elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
f69e4920 JW |
6923 | |
6924 | if (real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 | |
73f925cc JW |
6925 | || real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 |
6926 | || real_type == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC) | |
77a69ff8 JW |
6927 | { |
6928 | /* For local dynamic, don't generate DTPREL in any case. | |
6929 | Initialize the DTPREL slot into zero, so we get module | |
6930 | base address when invoke runtime TLS resolver. */ | |
6931 | bfd_put_NN (output_bfd, 0, | |
6932 | globals->root.sgot->contents + off | |
6933 | + GOT_ENTRY_SIZE); | |
6934 | } | |
6935 | else if (indx == 0) | |
a06ea964 | 6936 | { |
cec5225b | 6937 | bfd_put_NN (output_bfd, |
a06ea964 NC |
6938 | relocation - dtpoff_base (info), |
6939 | globals->root.sgot->contents + off | |
6940 | + GOT_ENTRY_SIZE); | |
6941 | } | |
6942 | else | |
6943 | { | |
6944 | /* This TLS symbol is global. We emit a | |
6945 | relocation to fixup the tls offset at load | |
6946 | time. */ | |
6947 | rela.r_info = | |
a6bb11b2 | 6948 | ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL)); |
a06ea964 NC |
6949 | rela.r_addend = 0; |
6950 | rela.r_offset = | |
6951 | (globals->root.sgot->output_section->vma | |
6952 | + globals->root.sgot->output_offset + off | |
6953 | + GOT_ENTRY_SIZE); | |
6954 | ||
6955 | loc = globals->root.srelgot->contents; | |
6956 | loc += globals->root.srelgot->reloc_count++ | |
6957 | * RELOC_SIZE (globals); | |
cec5225b YZ |
6958 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
6959 | bfd_put_NN (output_bfd, (bfd_vma) 0, | |
a06ea964 NC |
6960 | globals->root.sgot->contents + off |
6961 | + GOT_ENTRY_SIZE); | |
6962 | } | |
6963 | } | |
6964 | else | |
6965 | { | |
cec5225b | 6966 | bfd_put_NN (output_bfd, (bfd_vma) 1, |
a06ea964 | 6967 | globals->root.sgot->contents + off); |
cec5225b | 6968 | bfd_put_NN (output_bfd, |
a06ea964 NC |
6969 | relocation - dtpoff_base (info), |
6970 | globals->root.sgot->contents + off | |
6971 | + GOT_ENTRY_SIZE); | |
6972 | } | |
6973 | ||
6974 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
6975 | } | |
6976 | break; | |
6977 | ||
a6bb11b2 YZ |
6978 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
6979 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
043bf05a | 6980 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
6981 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
6982 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
a06ea964 NC |
6983 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
6984 | { | |
0a1b45a2 | 6985 | bool need_relocs = false; |
a06ea964 NC |
6986 | bfd_byte *loc; |
6987 | int indx; | |
6988 | bfd_vma off; | |
6989 | ||
6990 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
6991 | ||
6992 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
6993 | ||
6994 | need_relocs = | |
6dda7875 | 6995 | (!bfd_link_executable (info) || indx != 0) && |
a06ea964 NC |
6996 | (h == NULL |
6997 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6998 | || h->root.type != bfd_link_hash_undefweak); | |
6999 | ||
7000 | BFD_ASSERT (globals->root.srelgot != NULL); | |
7001 | ||
7002 | if (need_relocs) | |
7003 | { | |
7004 | Elf_Internal_Rela rela; | |
7005 | ||
7006 | if (indx == 0) | |
7007 | rela.r_addend = relocation - dtpoff_base (info); | |
7008 | else | |
7009 | rela.r_addend = 0; | |
7010 | ||
a6bb11b2 | 7011 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL)); |
a06ea964 NC |
7012 | rela.r_offset = globals->root.sgot->output_section->vma + |
7013 | globals->root.sgot->output_offset + off; | |
7014 | ||
7015 | loc = globals->root.srelgot->contents; | |
7016 | loc += globals->root.srelgot->reloc_count++ | |
7017 | * RELOC_SIZE (htab); | |
7018 | ||
cec5225b | 7019 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 7020 | |
cec5225b | 7021 | bfd_put_NN (output_bfd, rela.r_addend, |
a06ea964 NC |
7022 | globals->root.sgot->contents + off); |
7023 | } | |
7024 | else | |
cec5225b | 7025 | bfd_put_NN (output_bfd, relocation - tpoff_base (info), |
a06ea964 NC |
7026 | globals->root.sgot->contents + off); |
7027 | ||
7028 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
7029 | } | |
7030 | break; | |
7031 | ||
f955cccf | 7032 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 7033 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 7034 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 7035 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
1ada945d | 7036 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
7037 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
7038 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a06ea964 NC |
7039 | if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx)) |
7040 | { | |
0a1b45a2 | 7041 | bool need_relocs = false; |
a06ea964 NC |
7042 | int indx = h && h->dynindx != -1 ? h->dynindx : 0; |
7043 | bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx); | |
7044 | ||
7045 | need_relocs = (h == NULL | |
7046 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7047 | || h->root.type != bfd_link_hash_undefweak); | |
7048 | ||
7049 | BFD_ASSERT (globals->root.srelgot != NULL); | |
7050 | BFD_ASSERT (globals->root.sgot != NULL); | |
7051 | ||
7052 | if (need_relocs) | |
7053 | { | |
7054 | bfd_byte *loc; | |
7055 | Elf_Internal_Rela rela; | |
a6bb11b2 YZ |
7056 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC)); |
7057 | ||
a06ea964 NC |
7058 | rela.r_addend = 0; |
7059 | rela.r_offset = (globals->root.sgotplt->output_section->vma | |
7060 | + globals->root.sgotplt->output_offset | |
7061 | + off + globals->sgotplt_jump_table_size); | |
7062 | ||
7063 | if (indx == 0) | |
7064 | rela.r_addend = relocation - dtpoff_base (info); | |
7065 | ||
7066 | /* Allocate the next available slot in the PLT reloc | |
7067 | section to hold our R_AARCH64_TLSDESC, the next | |
7068 | available slot is determined from reloc_count, | |
7069 | which we step. But note, reloc_count was | |
7070 | artifically moved down while allocating slots for | |
7071 | real PLT relocs such that all of the PLT relocs | |
7072 | will fit above the initial reloc_count and the | |
7073 | extra stuff will fit below. */ | |
7074 | loc = globals->root.srelplt->contents; | |
7075 | loc += globals->root.srelplt->reloc_count++ | |
7076 | * RELOC_SIZE (globals); | |
7077 | ||
cec5225b | 7078 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 7079 | |
cec5225b | 7080 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
7081 | globals->root.sgotplt->contents + off + |
7082 | globals->sgotplt_jump_table_size); | |
cec5225b | 7083 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
7084 | globals->root.sgotplt->contents + off + |
7085 | globals->sgotplt_jump_table_size + | |
7086 | GOT_ENTRY_SIZE); | |
7087 | } | |
7088 | ||
7089 | symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx); | |
7090 | } | |
7091 | break; | |
a6bb11b2 YZ |
7092 | default: |
7093 | break; | |
a06ea964 NC |
7094 | } |
7095 | ||
a06ea964 | 7096 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
07d6d2b8 AM |
7097 | because such sections are not SEC_ALLOC and thus ld.so will |
7098 | not process them. */ | |
a06ea964 NC |
7099 | if (unresolved_reloc |
7100 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
7101 | && h->def_dynamic) | |
7102 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
7103 | +rel->r_offset) != (bfd_vma) - 1) | |
7104 | { | |
4eca0228 | 7105 | _bfd_error_handler |
695344c0 | 7106 | /* xgettext:c-format */ |
2dcf00ce AM |
7107 | (_("%pB(%pA+%#" PRIx64 "): " |
7108 | "unresolvable %s relocation against symbol `%s'"), | |
7109 | input_bfd, input_section, (uint64_t) rel->r_offset, howto->name, | |
a06ea964 | 7110 | h->root.root.string); |
0a1b45a2 | 7111 | return false; |
a06ea964 NC |
7112 | } |
7113 | ||
7114 | if (r != bfd_reloc_ok && r != bfd_reloc_continue) | |
7115 | { | |
c674f5cd | 7116 | bfd_reloc_code_real_type real_r_type |
0aa13fee | 7117 | = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
c674f5cd | 7118 | |
a06ea964 NC |
7119 | switch (r) |
7120 | { | |
7121 | case bfd_reloc_overflow: | |
1a72702b AM |
7122 | (*info->callbacks->reloc_overflow) |
7123 | (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, | |
7124 | input_bfd, input_section, rel->r_offset); | |
c674f5cd JW |
7125 | if (real_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
7126 | || real_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
7127 | { | |
7128 | (*info->callbacks->warning) | |
7129 | (info, | |
90b6238f | 7130 | _("too many GOT entries for -fpic, " |
c674f5cd JW |
7131 | "please recompile with -fPIC"), |
7132 | name, input_bfd, input_section, rel->r_offset); | |
0a1b45a2 | 7133 | return false; |
c674f5cd | 7134 | } |
027e9c75 NC |
7135 | /* Overflow can occur when a variable is referenced with a type |
7136 | that has a larger alignment than the type with which it was | |
7137 | declared. eg: | |
7138 | file1.c: extern int foo; int a (void) { return foo; } | |
7139 | file2.c: char bar, foo, baz; | |
7140 | If the variable is placed into a data section at an offset | |
7141 | that is incompatible with the larger alignment requirement | |
7142 | overflow will occur. (Strictly speaking this is not overflow | |
7143 | but rather an alignment problem, but the bfd_reloc_ error | |
7144 | enum does not have a value to cover that situation). | |
7145 | ||
7146 | Try to catch this situation here and provide a more helpful | |
7147 | error message to the user. */ | |
26009aa7 | 7148 | if (addend & (((bfd_vma) 1 << howto->rightshift) - 1) |
027e9c75 NC |
7149 | /* FIXME: Are we testing all of the appropriate reloc |
7150 | types here ? */ | |
7151 | && (real_r_type == BFD_RELOC_AARCH64_LD_LO19_PCREL | |
7152 | || real_r_type == BFD_RELOC_AARCH64_LDST16_LO12 | |
7153 | || real_r_type == BFD_RELOC_AARCH64_LDST32_LO12 | |
7154 | || real_r_type == BFD_RELOC_AARCH64_LDST64_LO12 | |
7155 | || real_r_type == BFD_RELOC_AARCH64_LDST128_LO12)) | |
7156 | { | |
7157 | info->callbacks->warning | |
90b6238f | 7158 | (info, _("one possible cause of this error is that the \ |
027e9c75 | 7159 | symbol is being referenced in the indicated code as if it had a larger \ |
90b6238f | 7160 | alignment than was declared where it was defined"), |
027e9c75 NC |
7161 | name, input_bfd, input_section, rel->r_offset); |
7162 | } | |
a06ea964 NC |
7163 | break; |
7164 | ||
7165 | case bfd_reloc_undefined: | |
1a72702b | 7166 | (*info->callbacks->undefined_symbol) |
0a1b45a2 | 7167 | (info, name, input_bfd, input_section, rel->r_offset, true); |
a06ea964 NC |
7168 | break; |
7169 | ||
7170 | case bfd_reloc_outofrange: | |
7171 | error_message = _("out of range"); | |
7172 | goto common_error; | |
7173 | ||
7174 | case bfd_reloc_notsupported: | |
7175 | error_message = _("unsupported relocation"); | |
7176 | goto common_error; | |
7177 | ||
7178 | case bfd_reloc_dangerous: | |
7179 | /* error_message should already be set. */ | |
7180 | goto common_error; | |
7181 | ||
7182 | default: | |
7183 | error_message = _("unknown error"); | |
7184 | /* Fall through. */ | |
7185 | ||
7186 | common_error: | |
7187 | BFD_ASSERT (error_message != NULL); | |
1a72702b AM |
7188 | (*info->callbacks->reloc_dangerous) |
7189 | (info, error_message, input_bfd, input_section, rel->r_offset); | |
a06ea964 NC |
7190 | break; |
7191 | } | |
7192 | } | |
027e9c75 NC |
7193 | |
7194 | if (!save_addend) | |
7195 | addend = 0; | |
a06ea964 NC |
7196 | } |
7197 | ||
0a1b45a2 | 7198 | return true; |
a06ea964 NC |
7199 | } |
7200 | ||
7201 | /* Set the right machine number. */ | |
7202 | ||
0a1b45a2 | 7203 | static bool |
cec5225b | 7204 | elfNN_aarch64_object_p (bfd *abfd) |
a06ea964 | 7205 | { |
cec5225b YZ |
7206 | #if ARCH_SIZE == 32 |
7207 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32); | |
7208 | #else | |
a06ea964 | 7209 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64); |
cec5225b | 7210 | #endif |
0a1b45a2 | 7211 | return true; |
a06ea964 NC |
7212 | } |
7213 | ||
7214 | /* Function to keep AArch64 specific flags in the ELF header. */ | |
7215 | ||
0a1b45a2 | 7216 | static bool |
cec5225b | 7217 | elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags) |
a06ea964 NC |
7218 | { |
7219 | if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags) | |
7220 | { | |
7221 | } | |
7222 | else | |
7223 | { | |
7224 | elf_elfheader (abfd)->e_flags = flags; | |
0a1b45a2 | 7225 | elf_flags_init (abfd) = true; |
a06ea964 NC |
7226 | } |
7227 | ||
0a1b45a2 | 7228 | return true; |
a06ea964 NC |
7229 | } |
7230 | ||
a06ea964 NC |
7231 | /* Merge backend specific data from an object file to the output |
7232 | object file when linking. */ | |
7233 | ||
0a1b45a2 | 7234 | static bool |
50e03d47 | 7235 | elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
a06ea964 | 7236 | { |
50e03d47 | 7237 | bfd *obfd = info->output_bfd; |
a06ea964 NC |
7238 | flagword out_flags; |
7239 | flagword in_flags; | |
0a1b45a2 | 7240 | bool flags_compatible = true; |
a06ea964 NC |
7241 | asection *sec; |
7242 | ||
7243 | /* Check if we have the same endianess. */ | |
50e03d47 | 7244 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
0a1b45a2 | 7245 | return false; |
a06ea964 NC |
7246 | |
7247 | if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd)) | |
0a1b45a2 | 7248 | return true; |
a06ea964 NC |
7249 | |
7250 | /* The input BFD must have had its flags initialised. */ | |
7251 | /* The following seems bogus to me -- The flags are initialized in | |
7252 | the assembler but I don't think an elf_flags_init field is | |
7253 | written into the object. */ | |
7254 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ | |
7255 | ||
7256 | in_flags = elf_elfheader (ibfd)->e_flags; | |
7257 | out_flags = elf_elfheader (obfd)->e_flags; | |
7258 | ||
7259 | if (!elf_flags_init (obfd)) | |
7260 | { | |
7261 | /* If the input is the default architecture and had the default | |
07d6d2b8 AM |
7262 | flags then do not bother setting the flags for the output |
7263 | architecture, instead allow future merges to do this. If no | |
7264 | future merges ever set these flags then they will retain their | |
7265 | uninitialised values, which surprise surprise, correspond | |
7266 | to the default values. */ | |
a06ea964 NC |
7267 | if (bfd_get_arch_info (ibfd)->the_default |
7268 | && elf_elfheader (ibfd)->e_flags == 0) | |
0a1b45a2 | 7269 | return true; |
a06ea964 | 7270 | |
0a1b45a2 | 7271 | elf_flags_init (obfd) = true; |
a06ea964 NC |
7272 | elf_elfheader (obfd)->e_flags = in_flags; |
7273 | ||
7274 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
7275 | && bfd_get_arch_info (obfd)->the_default) | |
7276 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
7277 | bfd_get_mach (ibfd)); | |
7278 | ||
0a1b45a2 | 7279 | return true; |
a06ea964 NC |
7280 | } |
7281 | ||
7282 | /* Identical flags must be compatible. */ | |
7283 | if (in_flags == out_flags) | |
0a1b45a2 | 7284 | return true; |
a06ea964 NC |
7285 | |
7286 | /* Check to see if the input BFD actually contains any sections. If | |
7287 | not, its flags may not have been initialised either, but it | |
7288 | cannot actually cause any incompatiblity. Do not short-circuit | |
7289 | dynamic objects; their section list may be emptied by | |
7290 | elf_link_add_object_symbols. | |
7291 | ||
7292 | Also check to see if there are no code sections in the input. | |
7293 | In this case there is no need to check for code specific flags. | |
7294 | XXX - do we need to worry about floating-point format compatability | |
7295 | in data sections ? */ | |
7296 | if (!(ibfd->flags & DYNAMIC)) | |
7297 | { | |
0a1b45a2 AM |
7298 | bool null_input_bfd = true; |
7299 | bool only_data_sections = true; | |
a06ea964 NC |
7300 | |
7301 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7302 | { | |
fd361982 | 7303 | if ((bfd_section_flags (sec) |
a06ea964 NC |
7304 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) |
7305 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
0a1b45a2 | 7306 | only_data_sections = false; |
a06ea964 | 7307 | |
0a1b45a2 | 7308 | null_input_bfd = false; |
a06ea964 NC |
7309 | break; |
7310 | } | |
7311 | ||
7312 | if (null_input_bfd || only_data_sections) | |
0a1b45a2 | 7313 | return true; |
a06ea964 NC |
7314 | } |
7315 | ||
7316 | return flags_compatible; | |
7317 | } | |
7318 | ||
7319 | /* Display the flags field. */ | |
7320 | ||
0a1b45a2 | 7321 | static bool |
cec5225b | 7322 | elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr) |
a06ea964 NC |
7323 | { |
7324 | FILE *file = (FILE *) ptr; | |
7325 | unsigned long flags; | |
7326 | ||
7327 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
7328 | ||
7329 | /* Print normal ELF private data. */ | |
7330 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
7331 | ||
7332 | flags = elf_elfheader (abfd)->e_flags; | |
7333 | /* Ignore init flag - it may not be set, despite the flags field | |
7334 | containing valid data. */ | |
7335 | ||
7336 | /* xgettext:c-format */ | |
dbb078f6 | 7337 | fprintf (file, _("private flags = 0x%lx:"), elf_elfheader (abfd)->e_flags); |
a06ea964 NC |
7338 | |
7339 | if (flags) | |
dbb078f6 | 7340 | fprintf (file, _(" <Unrecognised flag bits set>")); |
a06ea964 NC |
7341 | |
7342 | fputc ('\n', file); | |
7343 | ||
0a1b45a2 | 7344 | return true; |
a06ea964 NC |
7345 | } |
7346 | ||
6353d82b JW |
7347 | /* Return true if we need copy relocation against EH. */ |
7348 | ||
0a1b45a2 | 7349 | static bool |
6353d82b JW |
7350 | need_copy_relocation_p (struct elf_aarch64_link_hash_entry *eh) |
7351 | { | |
7352 | struct elf_dyn_relocs *p; | |
7353 | asection *s; | |
7354 | ||
190eb1dd | 7355 | for (p = eh->root.dyn_relocs; p != NULL; p = p->next) |
6353d82b JW |
7356 | { |
7357 | /* If there is any pc-relative reference, we need to keep copy relocation | |
7358 | to avoid propagating the relocation into runtime that current glibc | |
7359 | does not support. */ | |
7360 | if (p->pc_count) | |
0a1b45a2 | 7361 | return true; |
6353d82b JW |
7362 | |
7363 | s = p->sec->output_section; | |
7364 | /* Need copy relocation if it's against read-only section. */ | |
7365 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
0a1b45a2 | 7366 | return true; |
6353d82b JW |
7367 | } |
7368 | ||
0a1b45a2 | 7369 | return false; |
6353d82b JW |
7370 | } |
7371 | ||
a06ea964 NC |
7372 | /* Adjust a symbol defined by a dynamic object and referenced by a |
7373 | regular object. The current definition is in some section of the | |
7374 | dynamic object, but we're not including those sections. We have to | |
7375 | change the definition to something the rest of the link can | |
7376 | understand. */ | |
7377 | ||
0a1b45a2 | 7378 | static bool |
cec5225b | 7379 | elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info, |
a06ea964 NC |
7380 | struct elf_link_hash_entry *h) |
7381 | { | |
cec5225b | 7382 | struct elf_aarch64_link_hash_table *htab; |
5474d94f | 7383 | asection *s, *srel; |
a06ea964 NC |
7384 | |
7385 | /* If this is a function, put it in the procedure linkage table. We | |
7386 | will fill in the contents of the procedure linkage table later, | |
7387 | when we know the address of the .got section. */ | |
1419bbe5 | 7388 | if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt) |
a06ea964 NC |
7389 | { |
7390 | if (h->plt.refcount <= 0 | |
1419bbe5 WN |
7391 | || (h->type != STT_GNU_IFUNC |
7392 | && (SYMBOL_CALLS_LOCAL (info, h) | |
7393 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
7394 | && h->root.type == bfd_link_hash_undefweak)))) | |
a06ea964 NC |
7395 | { |
7396 | /* This case can occur if we saw a CALL26 reloc in | |
7397 | an input file, but the symbol wasn't referred to | |
7398 | by a dynamic object or all references were | |
7399 | garbage collected. In which case we can end up | |
7400 | resolving. */ | |
7401 | h->plt.offset = (bfd_vma) - 1; | |
7402 | h->needs_plt = 0; | |
7403 | } | |
7404 | ||
0a1b45a2 | 7405 | return true; |
a06ea964 NC |
7406 | } |
7407 | else | |
80de0c6d | 7408 | /* Otherwise, reset to -1. */ |
a06ea964 NC |
7409 | h->plt.offset = (bfd_vma) - 1; |
7410 | ||
7411 | ||
7412 | /* If this is a weak symbol, and there is a real definition, the | |
7413 | processor independent code will have arranged for us to see the | |
7414 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 7415 | if (h->is_weakalias) |
a06ea964 | 7416 | { |
60d67dc8 AM |
7417 | struct elf_link_hash_entry *def = weakdef (h); |
7418 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
7419 | h->root.u.def.section = def->root.u.def.section; | |
7420 | h->root.u.def.value = def->root.u.def.value; | |
a06ea964 | 7421 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
60d67dc8 | 7422 | h->non_got_ref = def->non_got_ref; |
0a1b45a2 | 7423 | return true; |
a06ea964 NC |
7424 | } |
7425 | ||
7426 | /* If we are creating a shared library, we must presume that the | |
7427 | only references to the symbol are via the global offset table. | |
7428 | For such cases we need not do anything here; the relocations will | |
7429 | be handled correctly by relocate_section. */ | |
0e1862bb | 7430 | if (bfd_link_pic (info)) |
0a1b45a2 | 7431 | return true; |
a06ea964 NC |
7432 | |
7433 | /* If there are no references to this symbol that do not use the | |
7434 | GOT, we don't need to generate a copy reloc. */ | |
7435 | if (!h->non_got_ref) | |
0a1b45a2 | 7436 | return true; |
a06ea964 NC |
7437 | |
7438 | /* If -z nocopyreloc was given, we won't generate them either. */ | |
7439 | if (info->nocopyreloc) | |
7440 | { | |
7441 | h->non_got_ref = 0; | |
0a1b45a2 | 7442 | return true; |
a06ea964 NC |
7443 | } |
7444 | ||
6353d82b JW |
7445 | if (ELIMINATE_COPY_RELOCS) |
7446 | { | |
7447 | struct elf_aarch64_link_hash_entry *eh; | |
dce2246a | 7448 | /* If we don't find any dynamic relocs in read-only sections, then |
6353d82b JW |
7449 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
7450 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
7451 | if (!need_copy_relocation_p (eh)) | |
7452 | { | |
7453 | h->non_got_ref = 0; | |
0a1b45a2 | 7454 | return true; |
6353d82b JW |
7455 | } |
7456 | } | |
7457 | ||
a06ea964 NC |
7458 | /* We must allocate the symbol in our .dynbss section, which will |
7459 | become part of the .bss section of the executable. There will be | |
7460 | an entry for this symbol in the .dynsym section. The dynamic | |
7461 | object will contain position independent code, so all references | |
7462 | from the dynamic object to this symbol will go through the global | |
7463 | offset table. The dynamic linker will use the .dynsym entry to | |
7464 | determine the address it must put in the global offset table, so | |
7465 | both the dynamic object and the regular object will refer to the | |
7466 | same memory location for the variable. */ | |
7467 | ||
cec5225b | 7468 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7469 | |
7470 | /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker | |
7471 | to copy the initial value out of the dynamic object and into the | |
7472 | runtime process image. */ | |
5474d94f AM |
7473 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
7474 | { | |
7475 | s = htab->root.sdynrelro; | |
7476 | srel = htab->root.sreldynrelro; | |
7477 | } | |
7478 | else | |
7479 | { | |
7480 | s = htab->root.sdynbss; | |
7481 | srel = htab->root.srelbss; | |
7482 | } | |
a06ea964 NC |
7483 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
7484 | { | |
5474d94f | 7485 | srel->size += RELOC_SIZE (htab); |
a06ea964 NC |
7486 | h->needs_copy = 1; |
7487 | } | |
7488 | ||
6cabe1ea | 7489 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
a06ea964 NC |
7490 | |
7491 | } | |
7492 | ||
0a1b45a2 | 7493 | static bool |
cec5225b | 7494 | elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number) |
a06ea964 NC |
7495 | { |
7496 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 7497 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
7498 | if (locals == NULL) |
7499 | { | |
7500 | locals = (struct elf_aarch64_local_symbol *) | |
7501 | bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol)); | |
7502 | if (locals == NULL) | |
0a1b45a2 | 7503 | return false; |
cec5225b | 7504 | elf_aarch64_locals (abfd) = locals; |
a06ea964 | 7505 | } |
0a1b45a2 | 7506 | return true; |
a06ea964 NC |
7507 | } |
7508 | ||
cc0efaa8 MS |
7509 | /* Create the .got section to hold the global offset table. */ |
7510 | ||
0a1b45a2 | 7511 | static bool |
cc0efaa8 MS |
7512 | aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) |
7513 | { | |
7514 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7515 | flagword flags; | |
7516 | asection *s; | |
7517 | struct elf_link_hash_entry *h; | |
7518 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
7519 | ||
7520 | /* This function may be called more than once. */ | |
ce558b89 | 7521 | if (htab->sgot != NULL) |
0a1b45a2 | 7522 | return true; |
cc0efaa8 MS |
7523 | |
7524 | flags = bed->dynamic_sec_flags; | |
7525 | ||
7526 | s = bfd_make_section_anyway_with_flags (abfd, | |
7527 | (bed->rela_plts_and_copies_p | |
7528 | ? ".rela.got" : ".rel.got"), | |
7529 | (bed->dynamic_sec_flags | |
7530 | | SEC_READONLY)); | |
7531 | if (s == NULL | |
fd361982 | 7532 | || !bfd_set_section_alignment (s, bed->s->log_file_align)) |
0a1b45a2 | 7533 | return false; |
cc0efaa8 MS |
7534 | htab->srelgot = s; |
7535 | ||
7536 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); | |
7537 | if (s == NULL | |
fd361982 | 7538 | || !bfd_set_section_alignment (s, bed->s->log_file_align)) |
0a1b45a2 | 7539 | return false; |
cc0efaa8 MS |
7540 | htab->sgot = s; |
7541 | htab->sgot->size += GOT_ENTRY_SIZE; | |
7542 | ||
7543 | if (bed->want_got_sym) | |
7544 | { | |
7545 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
7546 | (or .got.plt) section. We don't do this in the linker script | |
7547 | because we don't want to define the symbol if we are not creating | |
7548 | a global offset table. */ | |
7549 | h = _bfd_elf_define_linkage_sym (abfd, info, s, | |
7550 | "_GLOBAL_OFFSET_TABLE_"); | |
7551 | elf_hash_table (info)->hgot = h; | |
7552 | if (h == NULL) | |
0a1b45a2 | 7553 | return false; |
cc0efaa8 MS |
7554 | } |
7555 | ||
7556 | if (bed->want_got_plt) | |
7557 | { | |
7558 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); | |
7559 | if (s == NULL | |
fd361982 | 7560 | || !bfd_set_section_alignment (s, bed->s->log_file_align)) |
0a1b45a2 | 7561 | return false; |
cc0efaa8 MS |
7562 | htab->sgotplt = s; |
7563 | } | |
7564 | ||
7565 | /* The first bit of the global offset table is the header. */ | |
7566 | s->size += bed->got_header_size; | |
7567 | ||
0a1b45a2 | 7568 | return true; |
cc0efaa8 MS |
7569 | } |
7570 | ||
a06ea964 NC |
7571 | /* Look through the relocs for a section during the first phase. */ |
7572 | ||
0a1b45a2 | 7573 | static bool |
cec5225b | 7574 | elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
a06ea964 NC |
7575 | asection *sec, const Elf_Internal_Rela *relocs) |
7576 | { | |
7577 | Elf_Internal_Shdr *symtab_hdr; | |
7578 | struct elf_link_hash_entry **sym_hashes; | |
7579 | const Elf_Internal_Rela *rel; | |
7580 | const Elf_Internal_Rela *rel_end; | |
7581 | asection *sreloc; | |
7582 | ||
cec5225b | 7583 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 7584 | |
0e1862bb | 7585 | if (bfd_link_relocatable (info)) |
0a1b45a2 | 7586 | return true; |
a06ea964 NC |
7587 | |
7588 | BFD_ASSERT (is_aarch64_elf (abfd)); | |
7589 | ||
cec5225b | 7590 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7591 | sreloc = NULL; |
7592 | ||
7593 | symtab_hdr = &elf_symtab_hdr (abfd); | |
7594 | sym_hashes = elf_sym_hashes (abfd); | |
a06ea964 NC |
7595 | |
7596 | rel_end = relocs + sec->reloc_count; | |
7597 | for (rel = relocs; rel < rel_end; rel++) | |
7598 | { | |
7599 | struct elf_link_hash_entry *h; | |
d42c267e | 7600 | unsigned int r_symndx; |
a06ea964 | 7601 | unsigned int r_type; |
a6bb11b2 | 7602 | bfd_reloc_code_real_type bfd_r_type; |
1419bbe5 | 7603 | Elf_Internal_Sym *isym; |
a06ea964 | 7604 | |
cec5225b YZ |
7605 | r_symndx = ELFNN_R_SYM (rel->r_info); |
7606 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 NC |
7607 | |
7608 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
7609 | { | |
695344c0 | 7610 | /* xgettext:c-format */ |
871b3ab2 | 7611 | _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd, r_symndx); |
0a1b45a2 | 7612 | return false; |
a06ea964 NC |
7613 | } |
7614 | ||
ed5acf27 | 7615 | if (r_symndx < symtab_hdr->sh_info) |
1419bbe5 WN |
7616 | { |
7617 | /* A local symbol. */ | |
f1dfbfdb | 7618 | isym = bfd_sym_from_r_symndx (&htab->root.sym_cache, |
1419bbe5 WN |
7619 | abfd, r_symndx); |
7620 | if (isym == NULL) | |
0a1b45a2 | 7621 | return false; |
1419bbe5 WN |
7622 | |
7623 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
7624 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
7625 | { | |
7626 | h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, | |
0a1b45a2 | 7627 | true); |
1419bbe5 | 7628 | if (h == NULL) |
0a1b45a2 | 7629 | return false; |
1419bbe5 WN |
7630 | |
7631 | /* Fake a STT_GNU_IFUNC symbol. */ | |
7632 | h->type = STT_GNU_IFUNC; | |
7633 | h->def_regular = 1; | |
7634 | h->ref_regular = 1; | |
7635 | h->forced_local = 1; | |
7636 | h->root.type = bfd_link_hash_defined; | |
7637 | } | |
7638 | else | |
7639 | h = NULL; | |
7640 | } | |
a06ea964 NC |
7641 | else |
7642 | { | |
7643 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
7644 | while (h->root.type == bfd_link_hash_indirect | |
7645 | || h->root.type == bfd_link_hash_warning) | |
7646 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7647 | } | |
7648 | ||
7649 | /* Could be done earlier, if h were already available. */ | |
a6bb11b2 | 7650 | bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx); |
a06ea964 | 7651 | |
1419bbe5 WN |
7652 | if (h != NULL) |
7653 | { | |
18f822a0 JW |
7654 | /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. |
7655 | This shows up in particular in an R_AARCH64_PREL64 in large model | |
7656 | when calculating the pc-relative address to .got section which is | |
7657 | used to initialize the gp register. */ | |
7658 | if (h->root.root.string | |
7659 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
7660 | { | |
7661 | if (htab->root.dynobj == NULL) | |
7662 | htab->root.dynobj = abfd; | |
7663 | ||
7664 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
0a1b45a2 | 7665 | return false; |
18f822a0 JW |
7666 | |
7667 | BFD_ASSERT (h == htab->root.hgot); | |
7668 | } | |
7669 | ||
1419bbe5 WN |
7670 | /* Create the ifunc sections for static executables. If we |
7671 | never see an indirect function symbol nor we are building | |
7672 | a static executable, those sections will be empty and | |
7673 | won't appear in output. */ | |
7674 | switch (bfd_r_type) | |
7675 | { | |
7676 | default: | |
7677 | break; | |
7678 | ||
ce336788 JW |
7679 | case BFD_RELOC_AARCH64_ADD_LO12: |
7680 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: | |
7681 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
1419bbe5 | 7682 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 7683 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
1419bbe5 | 7684 | case BFD_RELOC_AARCH64_JUMP26: |
7018c030 | 7685 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
1419bbe5 | 7686 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 7687 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 7688 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
1419bbe5 | 7689 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 7690 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 7691 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
ce336788 | 7692 | case BFD_RELOC_AARCH64_NN: |
1419bbe5 WN |
7693 | if (htab->root.dynobj == NULL) |
7694 | htab->root.dynobj = abfd; | |
7695 | if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info)) | |
0a1b45a2 | 7696 | return false; |
1419bbe5 WN |
7697 | break; |
7698 | } | |
7699 | ||
2d0ca824 | 7700 | /* It is referenced by a non-shared object. */ |
1419bbe5 | 7701 | h->ref_regular = 1; |
1419bbe5 WN |
7702 | } |
7703 | ||
a6bb11b2 | 7704 | switch (bfd_r_type) |
a06ea964 | 7705 | { |
79e74192 RL |
7706 | case BFD_RELOC_AARCH64_16: |
7707 | #if ARCH_SIZE == 64 | |
7708 | case BFD_RELOC_AARCH64_32: | |
7709 | #endif | |
279b2f94 | 7710 | if (bfd_link_pic (info) && (sec->flags & SEC_ALLOC) != 0) |
79e74192 | 7711 | { |
279b2f94 RL |
7712 | if (h != NULL |
7713 | /* This is an absolute symbol. It represents a value instead | |
7714 | of an address. */ | |
c691de6a | 7715 | && (bfd_is_abs_symbol (&h->root) |
279b2f94 RL |
7716 | /* This is an undefined symbol. */ |
7717 | || h->root.type == bfd_link_hash_undefined)) | |
7718 | break; | |
7719 | ||
7720 | /* For local symbols, defined global symbols in a non-ABS section, | |
7721 | it is assumed that the value is an address. */ | |
79e74192 RL |
7722 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; |
7723 | _bfd_error_handler | |
7724 | /* xgettext:c-format */ | |
871b3ab2 | 7725 | (_("%pB: relocation %s against `%s' can not be used when making " |
79e74192 RL |
7726 | "a shared object"), |
7727 | abfd, elfNN_aarch64_howto_table[howto_index].name, | |
7728 | (h) ? h->root.root.string : "a local symbol"); | |
7729 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 7730 | return false; |
79e74192 RL |
7731 | } |
7732 | else | |
7733 | break; | |
7734 | ||
6353d82b JW |
7735 | case BFD_RELOC_AARCH64_MOVW_G0_NC: |
7736 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
7737 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
7738 | case BFD_RELOC_AARCH64_MOVW_G3: | |
7739 | if (bfd_link_pic (info)) | |
7740 | { | |
7741 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
7742 | _bfd_error_handler | |
7743 | /* xgettext:c-format */ | |
871b3ab2 | 7744 | (_("%pB: relocation %s against `%s' can not be used when making " |
6353d82b JW |
7745 | "a shared object; recompile with -fPIC"), |
7746 | abfd, elfNN_aarch64_howto_table[howto_index].name, | |
7747 | (h) ? h->root.root.string : "a local symbol"); | |
7748 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 7749 | return false; |
6353d82b JW |
7750 | } |
7751 | /* Fall through. */ | |
7752 | ||
7753 | case BFD_RELOC_AARCH64_16_PCREL: | |
7754 | case BFD_RELOC_AARCH64_32_PCREL: | |
7755 | case BFD_RELOC_AARCH64_64_PCREL: | |
7756 | case BFD_RELOC_AARCH64_ADD_LO12: | |
7757 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: | |
7758 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
7759 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
7760 | case BFD_RELOC_AARCH64_LDST128_LO12: | |
7761 | case BFD_RELOC_AARCH64_LDST16_LO12: | |
7762 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
7763 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
7764 | case BFD_RELOC_AARCH64_LDST8_LO12: | |
7765 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
7766 | if (h == NULL || bfd_link_pic (info)) | |
7767 | break; | |
7768 | /* Fall through. */ | |
7769 | ||
a6bb11b2 | 7770 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
7771 | |
7772 | /* We don't need to handle relocs into sections not going into | |
7773 | the "real" output. */ | |
7774 | if ((sec->flags & SEC_ALLOC) == 0) | |
7775 | break; | |
7776 | ||
7777 | if (h != NULL) | |
7778 | { | |
0e1862bb | 7779 | if (!bfd_link_pic (info)) |
a06ea964 NC |
7780 | h->non_got_ref = 1; |
7781 | ||
7782 | h->plt.refcount += 1; | |
7783 | h->pointer_equality_needed = 1; | |
7784 | } | |
7785 | ||
7786 | /* No need to do anything if we're not creating a shared | |
7787 | object. */ | |
6353d82b JW |
7788 | if (!(bfd_link_pic (info) |
7789 | /* If on the other hand, we are creating an executable, we | |
7790 | may need to keep relocations for symbols satisfied by a | |
7791 | dynamic library if we manage to avoid copy relocs for the | |
7792 | symbol. | |
7793 | ||
7794 | NOTE: Currently, there is no support of copy relocs | |
7795 | elimination on pc-relative relocation types, because there is | |
7796 | no dynamic relocation support for them in glibc. We still | |
7797 | record the dynamic symbol reference for them. This is | |
7798 | because one symbol may be referenced by both absolute | |
7799 | relocation (for example, BFD_RELOC_AARCH64_NN) and | |
7800 | pc-relative relocation. We need full symbol reference | |
7801 | information to make correct decision later in | |
7802 | elfNN_aarch64_adjust_dynamic_symbol. */ | |
7803 | || (ELIMINATE_COPY_RELOCS | |
7804 | && !bfd_link_pic (info) | |
7805 | && h != NULL | |
7806 | && (h->root.type == bfd_link_hash_defweak | |
7807 | || !h->def_regular)))) | |
a06ea964 NC |
7808 | break; |
7809 | ||
7810 | { | |
7811 | struct elf_dyn_relocs *p; | |
7812 | struct elf_dyn_relocs **head; | |
6353d82b | 7813 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; |
a06ea964 NC |
7814 | |
7815 | /* We must copy these reloc types into the output file. | |
7816 | Create a reloc section in dynobj and make room for | |
7817 | this reloc. */ | |
7818 | if (sreloc == NULL) | |
7819 | { | |
7820 | if (htab->root.dynobj == NULL) | |
7821 | htab->root.dynobj = abfd; | |
7822 | ||
7823 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
0a1b45a2 | 7824 | (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ true); |
a06ea964 NC |
7825 | |
7826 | if (sreloc == NULL) | |
0a1b45a2 | 7827 | return false; |
a06ea964 NC |
7828 | } |
7829 | ||
7830 | /* If this is a global symbol, we count the number of | |
7831 | relocations we need for this symbol. */ | |
7832 | if (h != NULL) | |
7833 | { | |
190eb1dd | 7834 | head = &h->dyn_relocs; |
a06ea964 NC |
7835 | } |
7836 | else | |
7837 | { | |
7838 | /* Track dynamic relocs needed for local syms too. | |
7839 | We really need local syms available to do this | |
7840 | easily. Oh well. */ | |
7841 | ||
7842 | asection *s; | |
7843 | void **vpp; | |
a06ea964 | 7844 | |
f1dfbfdb | 7845 | isym = bfd_sym_from_r_symndx (&htab->root.sym_cache, |
a06ea964 NC |
7846 | abfd, r_symndx); |
7847 | if (isym == NULL) | |
0a1b45a2 | 7848 | return false; |
a06ea964 NC |
7849 | |
7850 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
7851 | if (s == NULL) | |
7852 | s = sec; | |
7853 | ||
7854 | /* Beware of type punned pointers vs strict aliasing | |
7855 | rules. */ | |
7856 | vpp = &(elf_section_data (s)->local_dynrel); | |
7857 | head = (struct elf_dyn_relocs **) vpp; | |
7858 | } | |
7859 | ||
7860 | p = *head; | |
7861 | if (p == NULL || p->sec != sec) | |
7862 | { | |
986f0783 | 7863 | size_t amt = sizeof *p; |
a06ea964 NC |
7864 | p = ((struct elf_dyn_relocs *) |
7865 | bfd_zalloc (htab->root.dynobj, amt)); | |
7866 | if (p == NULL) | |
0a1b45a2 | 7867 | return false; |
a06ea964 NC |
7868 | p->next = *head; |
7869 | *head = p; | |
7870 | p->sec = sec; | |
7871 | } | |
7872 | ||
7873 | p->count += 1; | |
7874 | ||
6353d82b JW |
7875 | if (elfNN_aarch64_howto_table[howto_index].pc_relative) |
7876 | p->pc_count += 1; | |
a06ea964 NC |
7877 | } |
7878 | break; | |
7879 | ||
7880 | /* RR: We probably want to keep a consistency check that | |
7881 | there are no dangling GOT_PAGE relocs. */ | |
a6bb11b2 | 7882 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
7bcccb57 | 7883 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
7018c030 | 7884 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
7bcccb57 | 7885 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 7886 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 7887 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
7bcccb57 | 7888 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 7889 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 7890 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
f955cccf | 7891 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
7bcccb57 | 7892 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 7893 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
7bcccb57 | 7894 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
f955cccf | 7895 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
1ada945d | 7896 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
7897 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
7898 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a6bb11b2 | 7899 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
7bcccb57 | 7900 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 7901 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 7902 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 7903 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
a6bb11b2 | 7904 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 7905 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
7bcccb57 | 7906 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 7907 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
7908 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
7909 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
73f925cc | 7910 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 7911 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 7912 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
7913 | { |
7914 | unsigned got_type; | |
7915 | unsigned old_got_type; | |
7916 | ||
a6bb11b2 | 7917 | got_type = aarch64_reloc_got_type (bfd_r_type); |
a06ea964 NC |
7918 | |
7919 | if (h) | |
7920 | { | |
7921 | h->got.refcount += 1; | |
cec5225b | 7922 | old_got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
7923 | } |
7924 | else | |
7925 | { | |
7926 | struct elf_aarch64_local_symbol *locals; | |
7927 | ||
cec5225b | 7928 | if (!elfNN_aarch64_allocate_local_symbols |
a06ea964 | 7929 | (abfd, symtab_hdr->sh_info)) |
0a1b45a2 | 7930 | return false; |
a06ea964 | 7931 | |
cec5225b | 7932 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
7933 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
7934 | locals[r_symndx].got_refcount += 1; | |
7935 | old_got_type = locals[r_symndx].got_type; | |
7936 | } | |
7937 | ||
7938 | /* If a variable is accessed with both general dynamic TLS | |
7939 | methods, two slots may be created. */ | |
7940 | if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type)) | |
7941 | got_type |= old_got_type; | |
7942 | ||
7943 | /* We will already have issued an error message if there | |
7944 | is a TLS/non-TLS mismatch, based on the symbol type. | |
7945 | So just combine any TLS types needed. */ | |
7946 | if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL | |
7947 | && got_type != GOT_NORMAL) | |
7948 | got_type |= old_got_type; | |
7949 | ||
7950 | /* If the symbol is accessed by both IE and GD methods, we | |
7951 | are able to relax. Turn off the GD flag, without | |
7952 | messing up with any other kind of TLS types that may be | |
7953 | involved. */ | |
7954 | if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type)) | |
7955 | got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD); | |
7956 | ||
7957 | if (old_got_type != got_type) | |
7958 | { | |
7959 | if (h != NULL) | |
cec5225b | 7960 | elf_aarch64_hash_entry (h)->got_type = got_type; |
a06ea964 NC |
7961 | else |
7962 | { | |
7963 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 7964 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
7965 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
7966 | locals[r_symndx].got_type = got_type; | |
7967 | } | |
7968 | } | |
7969 | ||
cc0efaa8 MS |
7970 | if (htab->root.dynobj == NULL) |
7971 | htab->root.dynobj = abfd; | |
7972 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
0a1b45a2 | 7973 | return false; |
a06ea964 NC |
7974 | break; |
7975 | } | |
7976 | ||
a6bb11b2 YZ |
7977 | case BFD_RELOC_AARCH64_CALL26: |
7978 | case BFD_RELOC_AARCH64_JUMP26: | |
a06ea964 NC |
7979 | /* If this is a local symbol then we resolve it |
7980 | directly without creating a PLT entry. */ | |
7981 | if (h == NULL) | |
7982 | continue; | |
7983 | ||
7984 | h->needs_plt = 1; | |
1419bbe5 WN |
7985 | if (h->plt.refcount <= 0) |
7986 | h->plt.refcount = 1; | |
7987 | else | |
7988 | h->plt.refcount += 1; | |
a06ea964 | 7989 | break; |
a6bb11b2 YZ |
7990 | |
7991 | default: | |
7992 | break; | |
a06ea964 NC |
7993 | } |
7994 | } | |
a6bb11b2 | 7995 | |
0a1b45a2 | 7996 | return true; |
a06ea964 NC |
7997 | } |
7998 | ||
7999 | /* Treat mapping symbols as special target symbols. */ | |
8000 | ||
0a1b45a2 | 8001 | static bool |
cec5225b | 8002 | elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
8003 | asymbol *sym) |
8004 | { | |
8005 | return bfd_is_aarch64_special_symbol_name (sym->name, | |
8006 | BFD_AARCH64_SPECIAL_SYM_TYPE_ANY); | |
8007 | } | |
8008 | ||
e7679060 AM |
8009 | /* If the ELF symbol SYM might be a function in SEC, return the |
8010 | function size and set *CODE_OFF to the function's entry point, | |
8011 | otherwise return zero. */ | |
a06ea964 | 8012 | |
e7679060 AM |
8013 | static bfd_size_type |
8014 | elfNN_aarch64_maybe_function_sym (const asymbol *sym, asection *sec, | |
8015 | bfd_vma *code_off) | |
8016 | { | |
8017 | bfd_size_type size; | |
24aebc79 | 8018 | elf_symbol_type * elf_sym = (elf_symbol_type *) sym; |
a06ea964 | 8019 | |
e7679060 AM |
8020 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT |
8021 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0 | |
8022 | || sym->section != sec) | |
8023 | return 0; | |
a06ea964 | 8024 | |
24aebc79 NC |
8025 | size = (sym->flags & BSF_SYNTHETIC) ? 0 : elf_sym->internal_elf_sym.st_size; |
8026 | ||
e7679060 | 8027 | if (!(sym->flags & BSF_SYNTHETIC)) |
24aebc79 | 8028 | switch (ELF_ST_TYPE (elf_sym->internal_elf_sym.st_info)) |
e7679060 | 8029 | { |
a06ea964 | 8030 | case STT_NOTYPE: |
24aebc79 NC |
8031 | /* Ignore symbols created by the annobin plugin for gcc and clang. |
8032 | These symbols are hidden, local, notype and have a size of 0. */ | |
8033 | if (size == 0 | |
8034 | && sym->flags & BSF_LOCAL | |
8035 | && ELF_ST_VISIBILITY (elf_sym->internal_elf_sym.st_other) == STV_HIDDEN) | |
8036 | return 0; | |
8037 | /* Fall through. */ | |
8038 | case STT_FUNC: | |
8039 | /* FIXME: Allow STT_GNU_IFUNC as well ? */ | |
a06ea964 | 8040 | break; |
e7679060 AM |
8041 | default: |
8042 | return 0; | |
8043 | } | |
24aebc79 | 8044 | |
e7679060 AM |
8045 | if ((sym->flags & BSF_LOCAL) |
8046 | && bfd_is_aarch64_special_symbol_name (sym->name, | |
8047 | BFD_AARCH64_SPECIAL_SYM_TYPE_ANY)) | |
8048 | return 0; | |
a06ea964 | 8049 | |
e7679060 | 8050 | *code_off = sym->value; |
24aebc79 NC |
8051 | |
8052 | /* Do not return 0 for the function's size. */ | |
8053 | return size ? size : 1; | |
a06ea964 NC |
8054 | } |
8055 | ||
0a1b45a2 | 8056 | static bool |
cec5225b | 8057 | elfNN_aarch64_find_inliner_info (bfd *abfd, |
a06ea964 NC |
8058 | const char **filename_ptr, |
8059 | const char **functionname_ptr, | |
8060 | unsigned int *line_ptr) | |
8061 | { | |
0a1b45a2 | 8062 | bool found; |
a06ea964 NC |
8063 | found = _bfd_dwarf2_find_inliner_info |
8064 | (abfd, filename_ptr, | |
8065 | functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info); | |
8066 | return found; | |
8067 | } | |
8068 | ||
8069 | ||
0a1b45a2 | 8070 | static bool |
ed7e9d0b | 8071 | elfNN_aarch64_init_file_header (bfd *abfd, struct bfd_link_info *link_info) |
a06ea964 NC |
8072 | { |
8073 | Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */ | |
8074 | ||
ed7e9d0b | 8075 | if (!_bfd_elf_init_file_header (abfd, link_info)) |
0a1b45a2 | 8076 | return false; |
ed7e9d0b | 8077 | |
a06ea964 | 8078 | i_ehdrp = elf_elfheader (abfd); |
a06ea964 | 8079 | i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION; |
0a1b45a2 | 8080 | return true; |
a06ea964 NC |
8081 | } |
8082 | ||
8083 | static enum elf_reloc_type_class | |
cec5225b | 8084 | elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
7e612e98 AM |
8085 | const asection *rel_sec ATTRIBUTE_UNUSED, |
8086 | const Elf_Internal_Rela *rela) | |
a06ea964 | 8087 | { |
f2e6a843 SN |
8088 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); |
8089 | ||
8090 | if (htab->root.dynsym != NULL | |
8091 | && htab->root.dynsym->contents != NULL) | |
8092 | { | |
8093 | /* Check relocation against STT_GNU_IFUNC symbol if there are | |
8094 | dynamic symbols. */ | |
8095 | bfd *abfd = info->output_bfd; | |
8096 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8097 | unsigned long r_symndx = ELFNN_R_SYM (rela->r_info); | |
8098 | if (r_symndx != STN_UNDEF) | |
8099 | { | |
8100 | Elf_Internal_Sym sym; | |
8101 | if (!bed->s->swap_symbol_in (abfd, | |
8102 | (htab->root.dynsym->contents | |
8103 | + r_symndx * bed->s->sizeof_sym), | |
8104 | 0, &sym)) | |
8105 | { | |
8106 | /* xgettext:c-format */ | |
871b3ab2 | 8107 | _bfd_error_handler (_("%pB symbol number %lu references" |
f2e6a843 SN |
8108 | " nonexistent SHT_SYMTAB_SHNDX section"), |
8109 | abfd, r_symndx); | |
8110 | /* Ideally an error class should be returned here. */ | |
8111 | } | |
8112 | else if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC) | |
8113 | return reloc_class_ifunc; | |
8114 | } | |
8115 | } | |
8116 | ||
cec5225b | 8117 | switch ((int) ELFNN_R_TYPE (rela->r_info)) |
a06ea964 | 8118 | { |
f2e6a843 SN |
8119 | case AARCH64_R (IRELATIVE): |
8120 | return reloc_class_ifunc; | |
a6bb11b2 | 8121 | case AARCH64_R (RELATIVE): |
a06ea964 | 8122 | return reloc_class_relative; |
a6bb11b2 | 8123 | case AARCH64_R (JUMP_SLOT): |
a06ea964 | 8124 | return reloc_class_plt; |
a6bb11b2 | 8125 | case AARCH64_R (COPY): |
a06ea964 NC |
8126 | return reloc_class_copy; |
8127 | default: | |
8128 | return reloc_class_normal; | |
8129 | } | |
8130 | } | |
8131 | ||
a06ea964 NC |
8132 | /* Handle an AArch64 specific section when reading an object file. This is |
8133 | called when bfd_section_from_shdr finds a section with an unknown | |
8134 | type. */ | |
8135 | ||
0a1b45a2 | 8136 | static bool |
cec5225b | 8137 | elfNN_aarch64_section_from_shdr (bfd *abfd, |
a06ea964 NC |
8138 | Elf_Internal_Shdr *hdr, |
8139 | const char *name, int shindex) | |
8140 | { | |
8141 | /* There ought to be a place to keep ELF backend specific flags, but | |
8142 | at the moment there isn't one. We just keep track of the | |
8143 | sections by their name, instead. Fortunately, the ABI gives | |
8144 | names for all the AArch64 specific sections, so we will probably get | |
8145 | away with this. */ | |
8146 | switch (hdr->sh_type) | |
8147 | { | |
8148 | case SHT_AARCH64_ATTRIBUTES: | |
8149 | break; | |
8150 | ||
8151 | default: | |
0a1b45a2 | 8152 | return false; |
a06ea964 NC |
8153 | } |
8154 | ||
8155 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
0a1b45a2 | 8156 | return false; |
a06ea964 | 8157 | |
0a1b45a2 | 8158 | return true; |
a06ea964 NC |
8159 | } |
8160 | ||
8161 | /* A structure used to record a list of sections, independently | |
8162 | of the next and prev fields in the asection structure. */ | |
8163 | typedef struct section_list | |
8164 | { | |
8165 | asection *sec; | |
8166 | struct section_list *next; | |
8167 | struct section_list *prev; | |
8168 | } | |
8169 | section_list; | |
8170 | ||
8171 | /* Unfortunately we need to keep a list of sections for which | |
8172 | an _aarch64_elf_section_data structure has been allocated. This | |
cec5225b | 8173 | is because it is possible for functions like elfNN_aarch64_write_section |
a06ea964 NC |
8174 | to be called on a section which has had an elf_data_structure |
8175 | allocated for it (and so the used_by_bfd field is valid) but | |
8176 | for which the AArch64 extended version of this structure - the | |
8177 | _aarch64_elf_section_data structure - has not been allocated. */ | |
8178 | static section_list *sections_with_aarch64_elf_section_data = NULL; | |
8179 | ||
8180 | static void | |
8181 | record_section_with_aarch64_elf_section_data (asection *sec) | |
8182 | { | |
8183 | struct section_list *entry; | |
8184 | ||
8185 | entry = bfd_malloc (sizeof (*entry)); | |
8186 | if (entry == NULL) | |
8187 | return; | |
8188 | entry->sec = sec; | |
8189 | entry->next = sections_with_aarch64_elf_section_data; | |
8190 | entry->prev = NULL; | |
8191 | if (entry->next != NULL) | |
8192 | entry->next->prev = entry; | |
8193 | sections_with_aarch64_elf_section_data = entry; | |
8194 | } | |
8195 | ||
8196 | static struct section_list * | |
8197 | find_aarch64_elf_section_entry (asection *sec) | |
8198 | { | |
8199 | struct section_list *entry; | |
8200 | static struct section_list *last_entry = NULL; | |
8201 | ||
8202 | /* This is a short cut for the typical case where the sections are added | |
8203 | to the sections_with_aarch64_elf_section_data list in forward order and | |
8204 | then looked up here in backwards order. This makes a real difference | |
8205 | to the ld-srec/sec64k.exp linker test. */ | |
8206 | entry = sections_with_aarch64_elf_section_data; | |
8207 | if (last_entry != NULL) | |
8208 | { | |
8209 | if (last_entry->sec == sec) | |
8210 | entry = last_entry; | |
8211 | else if (last_entry->next != NULL && last_entry->next->sec == sec) | |
8212 | entry = last_entry->next; | |
8213 | } | |
8214 | ||
8215 | for (; entry; entry = entry->next) | |
8216 | if (entry->sec == sec) | |
8217 | break; | |
8218 | ||
8219 | if (entry) | |
8220 | /* Record the entry prior to this one - it is the entry we are | |
8221 | most likely to want to locate next time. Also this way if we | |
8222 | have been called from | |
8223 | unrecord_section_with_aarch64_elf_section_data () we will not | |
8224 | be caching a pointer that is about to be freed. */ | |
8225 | last_entry = entry->prev; | |
8226 | ||
8227 | return entry; | |
8228 | } | |
8229 | ||
8230 | static void | |
8231 | unrecord_section_with_aarch64_elf_section_data (asection *sec) | |
8232 | { | |
8233 | struct section_list *entry; | |
8234 | ||
8235 | entry = find_aarch64_elf_section_entry (sec); | |
8236 | ||
8237 | if (entry) | |
8238 | { | |
8239 | if (entry->prev != NULL) | |
8240 | entry->prev->next = entry->next; | |
8241 | if (entry->next != NULL) | |
8242 | entry->next->prev = entry->prev; | |
8243 | if (entry == sections_with_aarch64_elf_section_data) | |
8244 | sections_with_aarch64_elf_section_data = entry->next; | |
8245 | free (entry); | |
8246 | } | |
8247 | } | |
8248 | ||
8249 | ||
8250 | typedef struct | |
8251 | { | |
8252 | void *finfo; | |
8253 | struct bfd_link_info *info; | |
8254 | asection *sec; | |
8255 | int sec_shndx; | |
8256 | int (*func) (void *, const char *, Elf_Internal_Sym *, | |
8257 | asection *, struct elf_link_hash_entry *); | |
8258 | } output_arch_syminfo; | |
8259 | ||
8260 | enum map_symbol_type | |
8261 | { | |
8262 | AARCH64_MAP_INSN, | |
8263 | AARCH64_MAP_DATA | |
8264 | }; | |
8265 | ||
8266 | ||
8267 | /* Output a single mapping symbol. */ | |
8268 | ||
0a1b45a2 | 8269 | static bool |
cec5225b | 8270 | elfNN_aarch64_output_map_sym (output_arch_syminfo *osi, |
a06ea964 NC |
8271 | enum map_symbol_type type, bfd_vma offset) |
8272 | { | |
8273 | static const char *names[2] = { "$x", "$d" }; | |
8274 | Elf_Internal_Sym sym; | |
8275 | ||
8276 | sym.st_value = (osi->sec->output_section->vma | |
8277 | + osi->sec->output_offset + offset); | |
8278 | sym.st_size = 0; | |
8279 | sym.st_other = 0; | |
8280 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
8281 | sym.st_shndx = osi->sec_shndx; | |
8282 | return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1; | |
8283 | } | |
8284 | ||
a06ea964 NC |
8285 | /* Output a single local symbol for a generated stub. */ |
8286 | ||
0a1b45a2 | 8287 | static bool |
cec5225b | 8288 | elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name, |
a06ea964 NC |
8289 | bfd_vma offset, bfd_vma size) |
8290 | { | |
8291 | Elf_Internal_Sym sym; | |
8292 | ||
8293 | sym.st_value = (osi->sec->output_section->vma | |
8294 | + osi->sec->output_offset + offset); | |
8295 | sym.st_size = size; | |
8296 | sym.st_other = 0; | |
8297 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
8298 | sym.st_shndx = osi->sec_shndx; | |
8299 | return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1; | |
8300 | } | |
8301 | ||
0a1b45a2 | 8302 | static bool |
a06ea964 NC |
8303 | aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
8304 | { | |
cec5225b | 8305 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
8306 | asection *stub_sec; |
8307 | bfd_vma addr; | |
8308 | char *stub_name; | |
8309 | output_arch_syminfo *osi; | |
8310 | ||
8311 | /* Massage our args to the form they really have. */ | |
cec5225b | 8312 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
8313 | osi = (output_arch_syminfo *) in_arg; |
8314 | ||
8315 | stub_sec = stub_entry->stub_sec; | |
8316 | ||
8317 | /* Ensure this stub is attached to the current section being | |
8318 | processed. */ | |
8319 | if (stub_sec != osi->sec) | |
0a1b45a2 | 8320 | return true; |
a06ea964 NC |
8321 | |
8322 | addr = (bfd_vma) stub_entry->stub_offset; | |
8323 | ||
8324 | stub_name = stub_entry->output_name; | |
8325 | ||
8326 | switch (stub_entry->stub_type) | |
8327 | { | |
8328 | case aarch64_stub_adrp_branch: | |
cec5225b | 8329 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, |
a06ea964 | 8330 | sizeof (aarch64_adrp_branch_stub))) |
0a1b45a2 | 8331 | return false; |
cec5225b | 8332 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
0a1b45a2 | 8333 | return false; |
a06ea964 NC |
8334 | break; |
8335 | case aarch64_stub_long_branch: | |
cec5225b | 8336 | if (!elfNN_aarch64_output_stub_sym |
a06ea964 | 8337 | (osi, stub_name, addr, sizeof (aarch64_long_branch_stub))) |
0a1b45a2 | 8338 | return false; |
cec5225b | 8339 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
0a1b45a2 | 8340 | return false; |
cec5225b | 8341 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16)) |
0a1b45a2 | 8342 | return false; |
a06ea964 | 8343 | break; |
68fcca92 JW |
8344 | case aarch64_stub_erratum_835769_veneer: |
8345 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
8346 | sizeof (aarch64_erratum_835769_stub))) | |
0a1b45a2 | 8347 | return false; |
68fcca92 | 8348 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
0a1b45a2 | 8349 | return false; |
68fcca92 | 8350 | break; |
4106101c MS |
8351 | case aarch64_stub_erratum_843419_veneer: |
8352 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
8353 | sizeof (aarch64_erratum_843419_stub))) | |
0a1b45a2 | 8354 | return false; |
4106101c | 8355 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
0a1b45a2 | 8356 | return false; |
4106101c | 8357 | break; |
9fca35fc TC |
8358 | case aarch64_stub_none: |
8359 | break; | |
4106101c | 8360 | |
a06ea964 | 8361 | default: |
8e2fe09f | 8362 | abort (); |
a06ea964 NC |
8363 | } |
8364 | ||
0a1b45a2 | 8365 | return true; |
a06ea964 NC |
8366 | } |
8367 | ||
8368 | /* Output mapping symbols for linker generated sections. */ | |
8369 | ||
0a1b45a2 | 8370 | static bool |
cec5225b | 8371 | elfNN_aarch64_output_arch_local_syms (bfd *output_bfd, |
a06ea964 NC |
8372 | struct bfd_link_info *info, |
8373 | void *finfo, | |
8374 | int (*func) (void *, const char *, | |
8375 | Elf_Internal_Sym *, | |
8376 | asection *, | |
8377 | struct elf_link_hash_entry | |
8378 | *)) | |
8379 | { | |
8380 | output_arch_syminfo osi; | |
cec5225b | 8381 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 8382 | |
cec5225b | 8383 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
8384 | |
8385 | osi.finfo = finfo; | |
8386 | osi.info = info; | |
8387 | osi.func = func; | |
8388 | ||
8389 | /* Long calls stubs. */ | |
8390 | if (htab->stub_bfd && htab->stub_bfd->sections) | |
8391 | { | |
8392 | asection *stub_sec; | |
8393 | ||
8394 | for (stub_sec = htab->stub_bfd->sections; | |
8395 | stub_sec != NULL; stub_sec = stub_sec->next) | |
8396 | { | |
8397 | /* Ignore non-stub sections. */ | |
8398 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
8399 | continue; | |
8400 | ||
8401 | osi.sec = stub_sec; | |
8402 | ||
8403 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
8404 | (output_bfd, osi.sec->output_section); | |
8405 | ||
61865519 MS |
8406 | /* The first instruction in a stub is always a branch. */ |
8407 | if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0)) | |
0a1b45a2 | 8408 | return false; |
61865519 | 8409 | |
a06ea964 NC |
8410 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub, |
8411 | &osi); | |
8412 | } | |
8413 | } | |
8414 | ||
8415 | /* Finally, output mapping symbols for the PLT. */ | |
8416 | if (!htab->root.splt || htab->root.splt->size == 0) | |
0a1b45a2 | 8417 | return true; |
a06ea964 | 8418 | |
a06ea964 NC |
8419 | osi.sec_shndx = _bfd_elf_section_from_bfd_section |
8420 | (output_bfd, htab->root.splt->output_section); | |
8421 | osi.sec = htab->root.splt; | |
8422 | ||
73524045 | 8423 | elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0); |
a06ea964 | 8424 | |
0a1b45a2 | 8425 | return true; |
a06ea964 NC |
8426 | |
8427 | } | |
8428 | ||
8429 | /* Allocate target specific section data. */ | |
8430 | ||
0a1b45a2 | 8431 | static bool |
cec5225b | 8432 | elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec) |
a06ea964 NC |
8433 | { |
8434 | if (!sec->used_by_bfd) | |
8435 | { | |
8436 | _aarch64_elf_section_data *sdata; | |
986f0783 | 8437 | size_t amt = sizeof (*sdata); |
a06ea964 NC |
8438 | |
8439 | sdata = bfd_zalloc (abfd, amt); | |
8440 | if (sdata == NULL) | |
0a1b45a2 | 8441 | return false; |
a06ea964 NC |
8442 | sec->used_by_bfd = sdata; |
8443 | } | |
8444 | ||
8445 | record_section_with_aarch64_elf_section_data (sec); | |
8446 | ||
8447 | return _bfd_elf_new_section_hook (abfd, sec); | |
8448 | } | |
8449 | ||
8450 | ||
8451 | static void | |
8452 | unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
8453 | asection *sec, | |
8454 | void *ignore ATTRIBUTE_UNUSED) | |
8455 | { | |
8456 | unrecord_section_with_aarch64_elf_section_data (sec); | |
8457 | } | |
8458 | ||
0a1b45a2 | 8459 | static bool |
cec5225b | 8460 | elfNN_aarch64_close_and_cleanup (bfd *abfd) |
a06ea964 NC |
8461 | { |
8462 | if (abfd->sections) | |
8463 | bfd_map_over_sections (abfd, | |
8464 | unrecord_section_via_map_over_sections, NULL); | |
8465 | ||
8466 | return _bfd_elf_close_and_cleanup (abfd); | |
8467 | } | |
8468 | ||
0a1b45a2 | 8469 | static bool |
cec5225b | 8470 | elfNN_aarch64_bfd_free_cached_info (bfd *abfd) |
a06ea964 NC |
8471 | { |
8472 | if (abfd->sections) | |
8473 | bfd_map_over_sections (abfd, | |
8474 | unrecord_section_via_map_over_sections, NULL); | |
8475 | ||
8476 | return _bfd_free_cached_info (abfd); | |
8477 | } | |
8478 | ||
a06ea964 NC |
8479 | /* Create dynamic sections. This is different from the ARM backend in that |
8480 | the got, plt, gotplt and their relocation sections are all created in the | |
8481 | standard part of the bfd elf backend. */ | |
8482 | ||
0a1b45a2 | 8483 | static bool |
cec5225b | 8484 | elfNN_aarch64_create_dynamic_sections (bfd *dynobj, |
a06ea964 NC |
8485 | struct bfd_link_info *info) |
8486 | { | |
cc0efaa8 MS |
8487 | /* We need to create .got section. */ |
8488 | if (!aarch64_elf_create_got_section (dynobj, info)) | |
0a1b45a2 | 8489 | return false; |
a06ea964 | 8490 | |
9d19e4fd | 8491 | return _bfd_elf_create_dynamic_sections (dynobj, info); |
a06ea964 NC |
8492 | } |
8493 | ||
8494 | ||
8495 | /* Allocate space in .plt, .got and associated reloc sections for | |
8496 | dynamic relocs. */ | |
8497 | ||
0a1b45a2 | 8498 | static bool |
cec5225b | 8499 | elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
a06ea964 NC |
8500 | { |
8501 | struct bfd_link_info *info; | |
cec5225b YZ |
8502 | struct elf_aarch64_link_hash_table *htab; |
8503 | struct elf_aarch64_link_hash_entry *eh; | |
a06ea964 NC |
8504 | struct elf_dyn_relocs *p; |
8505 | ||
8506 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
8507 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
8508 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
8509 | ||
8510 | There is no need to process bfd_link_hash_indirect symbols here | |
8511 | because we will also be presented with the concrete instance of | |
cec5225b | 8512 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been |
a06ea964 | 8513 | called to copy all relevant data from the generic to the concrete |
2d0ca824 | 8514 | symbol instance. */ |
a06ea964 | 8515 | if (h->root.type == bfd_link_hash_indirect) |
0a1b45a2 | 8516 | return true; |
a06ea964 NC |
8517 | |
8518 | if (h->root.type == bfd_link_hash_warning) | |
8519 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8520 | ||
8521 | info = (struct bfd_link_info *) inf; | |
cec5225b | 8522 | htab = elf_aarch64_hash_table (info); |
a06ea964 | 8523 | |
1419bbe5 WN |
8524 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
8525 | here if it is defined and referenced in a non-shared object. */ | |
8526 | if (h->type == STT_GNU_IFUNC | |
8527 | && h->def_regular) | |
0a1b45a2 | 8528 | return true; |
1419bbe5 | 8529 | else if (htab->root.dynamic_sections_created && h->plt.refcount > 0) |
a06ea964 NC |
8530 | { |
8531 | /* Make sure this symbol is output as a dynamic symbol. | |
07d6d2b8 | 8532 | Undefined weak syms won't yet be marked as dynamic. */ |
ff07562f JW |
8533 | if (h->dynindx == -1 && !h->forced_local |
8534 | && h->root.type == bfd_link_hash_undefweak) | |
a06ea964 NC |
8535 | { |
8536 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
0a1b45a2 | 8537 | return false; |
a06ea964 NC |
8538 | } |
8539 | ||
0e1862bb | 8540 | if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
a06ea964 NC |
8541 | { |
8542 | asection *s = htab->root.splt; | |
8543 | ||
8544 | /* If this is the first .plt entry, make room for the special | |
8545 | first entry. */ | |
8546 | if (s->size == 0) | |
8547 | s->size += htab->plt_header_size; | |
8548 | ||
8549 | h->plt.offset = s->size; | |
8550 | ||
8551 | /* If this symbol is not defined in a regular file, and we are | |
8552 | not generating a shared library, then set the symbol to this | |
8553 | location in the .plt. This is required to make function | |
8554 | pointers compare as equal between the normal executable and | |
8555 | the shared library. */ | |
0e1862bb | 8556 | if (!bfd_link_pic (info) && !h->def_regular) |
a06ea964 NC |
8557 | { |
8558 | h->root.u.def.section = s; | |
8559 | h->root.u.def.value = h->plt.offset; | |
8560 | } | |
8561 | ||
8562 | /* Make room for this entry. For now we only create the | |
8563 | small model PLT entries. We later need to find a way | |
8564 | of relaxing into these from the large model PLT entries. */ | |
37c18eed | 8565 | s->size += htab->plt_entry_size; |
a06ea964 NC |
8566 | |
8567 | /* We also need to make an entry in the .got.plt section, which | |
8568 | will be placed in the .got section by the linker script. */ | |
8569 | htab->root.sgotplt->size += GOT_ENTRY_SIZE; | |
8570 | ||
8571 | /* We also need to make an entry in the .rela.plt section. */ | |
8572 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8573 | ||
8574 | /* We need to ensure that all GOT entries that serve the PLT | |
8575 | are consecutive with the special GOT slots [0] [1] and | |
8576 | [2]. Any addtional relocations, such as | |
8577 | R_AARCH64_TLSDESC, must be placed after the PLT related | |
8578 | entries. We abuse the reloc_count such that during | |
8579 | sizing we adjust reloc_count to indicate the number of | |
8580 | PLT related reserved entries. In subsequent phases when | |
8581 | filling in the contents of the reloc entries, PLT related | |
8582 | entries are placed by computing their PLT index (0 | |
8583 | .. reloc_count). While other none PLT relocs are placed | |
8584 | at the slot indicated by reloc_count and reloc_count is | |
8585 | updated. */ | |
8586 | ||
8587 | htab->root.srelplt->reloc_count++; | |
823710d5 SN |
8588 | |
8589 | /* Mark the DSO in case R_<CLS>_JUMP_SLOT relocs against | |
8590 | variant PCS symbols are present. */ | |
8591 | if (h->other & STO_AARCH64_VARIANT_PCS) | |
8592 | htab->variant_pcs = 1; | |
8593 | ||
a06ea964 NC |
8594 | } |
8595 | else | |
8596 | { | |
8597 | h->plt.offset = (bfd_vma) - 1; | |
8598 | h->needs_plt = 0; | |
8599 | } | |
8600 | } | |
8601 | else | |
8602 | { | |
8603 | h->plt.offset = (bfd_vma) - 1; | |
8604 | h->needs_plt = 0; | |
8605 | } | |
8606 | ||
cec5225b | 8607 | eh = (struct elf_aarch64_link_hash_entry *) h; |
a06ea964 NC |
8608 | eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; |
8609 | ||
8610 | if (h->got.refcount > 0) | |
8611 | { | |
0a1b45a2 | 8612 | bool dyn; |
cec5225b | 8613 | unsigned got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
8614 | |
8615 | h->got.offset = (bfd_vma) - 1; | |
8616 | ||
8617 | dyn = htab->root.dynamic_sections_created; | |
8618 | ||
8619 | /* Make sure this symbol is output as a dynamic symbol. | |
07d6d2b8 | 8620 | Undefined weak syms won't yet be marked as dynamic. */ |
ff07562f JW |
8621 | if (dyn && h->dynindx == -1 && !h->forced_local |
8622 | && h->root.type == bfd_link_hash_undefweak) | |
a06ea964 NC |
8623 | { |
8624 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
0a1b45a2 | 8625 | return false; |
a06ea964 NC |
8626 | } |
8627 | ||
8628 | if (got_type == GOT_UNKNOWN) | |
8629 | { | |
8630 | } | |
8631 | else if (got_type == GOT_NORMAL) | |
8632 | { | |
8633 | h->got.offset = htab->root.sgot->size; | |
8634 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8635 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8636 | || h->root.type != bfd_link_hash_undefweak) | |
0e1862bb | 8637 | && (bfd_link_pic (info) |
a377ae2a SN |
8638 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) |
8639 | /* Undefined weak symbol in static PIE resolves to 0 without | |
8640 | any dynamic relocations. */ | |
8641 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
a06ea964 NC |
8642 | { |
8643 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
8644 | } | |
8645 | } | |
8646 | else | |
8647 | { | |
8648 | int indx; | |
8649 | if (got_type & GOT_TLSDESC_GD) | |
8650 | { | |
8651 | eh->tlsdesc_got_jump_table_offset = | |
8652 | (htab->root.sgotplt->size | |
8653 | - aarch64_compute_jump_table_size (htab)); | |
8654 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
8655 | h->got.offset = (bfd_vma) - 2; | |
8656 | } | |
8657 | ||
8658 | if (got_type & GOT_TLS_GD) | |
8659 | { | |
8660 | h->got.offset = htab->root.sgot->size; | |
8661 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
8662 | } | |
8663 | ||
8664 | if (got_type & GOT_TLS_IE) | |
8665 | { | |
8666 | h->got.offset = htab->root.sgot->size; | |
8667 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8668 | } | |
8669 | ||
8670 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
8671 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8672 | || h->root.type != bfd_link_hash_undefweak) | |
6dda7875 | 8673 | && (!bfd_link_executable (info) |
a06ea964 NC |
8674 | || indx != 0 |
8675 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
8676 | { | |
8677 | if (got_type & GOT_TLSDESC_GD) | |
8678 | { | |
8679 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8680 | /* Note reloc_count not incremented here! We have | |
8681 | already adjusted reloc_count for this relocation | |
8682 | type. */ | |
8683 | ||
8684 | /* TLSDESC PLT is now needed, but not yet determined. */ | |
9bcc30e4 | 8685 | htab->root.tlsdesc_plt = (bfd_vma) - 1; |
a06ea964 NC |
8686 | } |
8687 | ||
8688 | if (got_type & GOT_TLS_GD) | |
8689 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
8690 | ||
8691 | if (got_type & GOT_TLS_IE) | |
8692 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
8693 | } | |
8694 | } | |
8695 | } | |
8696 | else | |
8697 | { | |
8698 | h->got.offset = (bfd_vma) - 1; | |
8699 | } | |
8700 | ||
190eb1dd | 8701 | if (h->dyn_relocs == NULL) |
0a1b45a2 | 8702 | return true; |
a06ea964 NC |
8703 | |
8704 | /* In the shared -Bsymbolic case, discard space allocated for | |
8705 | dynamic pc-relative relocs against symbols which turn out to be | |
8706 | defined in regular objects. For the normal shared case, discard | |
8707 | space for pc-relative relocs that have become local due to symbol | |
8708 | visibility changes. */ | |
8709 | ||
0e1862bb | 8710 | if (bfd_link_pic (info)) |
a06ea964 NC |
8711 | { |
8712 | /* Relocs that use pc_count are those that appear on a call | |
07d6d2b8 AM |
8713 | insn, or certain REL relocs that can generated via assembly. |
8714 | We want calls to protected symbols to resolve directly to the | |
8715 | function rather than going via the plt. If people want | |
8716 | function pointer comparisons to work as expected then they | |
8717 | should avoid writing weird assembly. */ | |
a06ea964 NC |
8718 | if (SYMBOL_CALLS_LOCAL (info, h)) |
8719 | { | |
8720 | struct elf_dyn_relocs **pp; | |
8721 | ||
190eb1dd | 8722 | for (pp = &h->dyn_relocs; (p = *pp) != NULL;) |
a06ea964 NC |
8723 | { |
8724 | p->count -= p->pc_count; | |
8725 | p->pc_count = 0; | |
8726 | if (p->count == 0) | |
8727 | *pp = p->next; | |
8728 | else | |
8729 | pp = &p->next; | |
8730 | } | |
8731 | } | |
8732 | ||
8733 | /* Also discard relocs on undefined weak syms with non-default | |
07d6d2b8 | 8734 | visibility. */ |
190eb1dd | 8735 | if (h->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak) |
a06ea964 | 8736 | { |
ddb7fd0f L |
8737 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
8738 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
190eb1dd | 8739 | h->dyn_relocs = NULL; |
a06ea964 NC |
8740 | |
8741 | /* Make sure undefined weak symbols are output as a dynamic | |
8742 | symbol in PIEs. */ | |
8743 | else if (h->dynindx == -1 | |
8744 | && !h->forced_local | |
ff07562f | 8745 | && h->root.type == bfd_link_hash_undefweak |
a06ea964 | 8746 | && !bfd_elf_link_record_dynamic_symbol (info, h)) |
0a1b45a2 | 8747 | return false; |
a06ea964 NC |
8748 | } |
8749 | ||
8750 | } | |
8751 | else if (ELIMINATE_COPY_RELOCS) | |
8752 | { | |
8753 | /* For the non-shared case, discard space for relocs against | |
07d6d2b8 AM |
8754 | symbols which turn out to need copy relocs or are not |
8755 | dynamic. */ | |
a06ea964 NC |
8756 | |
8757 | if (!h->non_got_ref | |
8758 | && ((h->def_dynamic | |
8759 | && !h->def_regular) | |
8760 | || (htab->root.dynamic_sections_created | |
8761 | && (h->root.type == bfd_link_hash_undefweak | |
8762 | || h->root.type == bfd_link_hash_undefined)))) | |
8763 | { | |
8764 | /* Make sure this symbol is output as a dynamic symbol. | |
8765 | Undefined weak syms won't yet be marked as dynamic. */ | |
8766 | if (h->dynindx == -1 | |
8767 | && !h->forced_local | |
ff07562f | 8768 | && h->root.type == bfd_link_hash_undefweak |
a06ea964 | 8769 | && !bfd_elf_link_record_dynamic_symbol (info, h)) |
0a1b45a2 | 8770 | return false; |
a06ea964 NC |
8771 | |
8772 | /* If that succeeded, we know we'll be keeping all the | |
8773 | relocs. */ | |
8774 | if (h->dynindx != -1) | |
8775 | goto keep; | |
8776 | } | |
8777 | ||
190eb1dd | 8778 | h->dyn_relocs = NULL; |
a06ea964 NC |
8779 | |
8780 | keep:; | |
8781 | } | |
8782 | ||
8783 | /* Finally, allocate space. */ | |
190eb1dd | 8784 | for (p = h->dyn_relocs; p != NULL; p = p->next) |
a06ea964 NC |
8785 | { |
8786 | asection *sreloc; | |
8787 | ||
8788 | sreloc = elf_section_data (p->sec)->sreloc; | |
8789 | ||
8790 | BFD_ASSERT (sreloc != NULL); | |
8791 | ||
8792 | sreloc->size += p->count * RELOC_SIZE (htab); | |
8793 | } | |
8794 | ||
0a1b45a2 | 8795 | return true; |
a06ea964 NC |
8796 | } |
8797 | ||
1419bbe5 WN |
8798 | /* Allocate space in .plt, .got and associated reloc sections for |
8799 | ifunc dynamic relocs. */ | |
8800 | ||
0a1b45a2 | 8801 | static bool |
1419bbe5 WN |
8802 | elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h, |
8803 | void *inf) | |
8804 | { | |
8805 | struct bfd_link_info *info; | |
8806 | struct elf_aarch64_link_hash_table *htab; | |
1419bbe5 WN |
8807 | |
8808 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
8809 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
8810 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
8811 | ||
8812 | There is no need to process bfd_link_hash_indirect symbols here | |
8813 | because we will also be presented with the concrete instance of | |
8814 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been | |
8815 | called to copy all relevant data from the generic to the concrete | |
2d0ca824 | 8816 | symbol instance. */ |
1419bbe5 | 8817 | if (h->root.type == bfd_link_hash_indirect) |
0a1b45a2 | 8818 | return true; |
1419bbe5 WN |
8819 | |
8820 | if (h->root.type == bfd_link_hash_warning) | |
8821 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8822 | ||
8823 | info = (struct bfd_link_info *) inf; | |
8824 | htab = elf_aarch64_hash_table (info); | |
8825 | ||
1419bbe5 WN |
8826 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
8827 | here if it is defined and referenced in a non-shared object. */ | |
8828 | if (h->type == STT_GNU_IFUNC | |
8829 | && h->def_regular) | |
8830 | return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, | |
190eb1dd | 8831 | &h->dyn_relocs, |
1419bbe5 WN |
8832 | htab->plt_entry_size, |
8833 | htab->plt_header_size, | |
233cc9c1 | 8834 | GOT_ENTRY_SIZE, |
0a1b45a2 AM |
8835 | false); |
8836 | return true; | |
1419bbe5 WN |
8837 | } |
8838 | ||
1419bbe5 WN |
8839 | /* Allocate space in .plt, .got and associated reloc sections for |
8840 | local ifunc dynamic relocs. */ | |
8841 | ||
1201fda6 | 8842 | static int |
1419bbe5 WN |
8843 | elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf) |
8844 | { | |
8845 | struct elf_link_hash_entry *h | |
8846 | = (struct elf_link_hash_entry *) *slot; | |
8847 | ||
8848 | if (h->type != STT_GNU_IFUNC | |
8849 | || !h->def_regular | |
8850 | || !h->ref_regular | |
8851 | || !h->forced_local | |
8852 | || h->root.type != bfd_link_hash_defined) | |
8853 | abort (); | |
8854 | ||
8855 | return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf); | |
8856 | } | |
a06ea964 | 8857 | |
a06ea964 NC |
8858 | /* This is the most important function of all . Innocuosly named |
8859 | though ! */ | |
2d0ca824 | 8860 | |
0a1b45a2 | 8861 | static bool |
cec5225b | 8862 | elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
8863 | struct bfd_link_info *info) |
8864 | { | |
cec5225b | 8865 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
8866 | bfd *dynobj; |
8867 | asection *s; | |
0a1b45a2 | 8868 | bool relocs; |
a06ea964 NC |
8869 | bfd *ibfd; |
8870 | ||
cec5225b | 8871 | htab = elf_aarch64_hash_table ((info)); |
a06ea964 NC |
8872 | dynobj = htab->root.dynobj; |
8873 | ||
8874 | BFD_ASSERT (dynobj != NULL); | |
8875 | ||
8876 | if (htab->root.dynamic_sections_created) | |
8877 | { | |
9b8b325a | 8878 | if (bfd_link_executable (info) && !info->nointerp) |
a06ea964 NC |
8879 | { |
8880 | s = bfd_get_linker_section (dynobj, ".interp"); | |
8881 | if (s == NULL) | |
8882 | abort (); | |
8883 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
8884 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
8885 | } | |
8886 | } | |
8887 | ||
8888 | /* Set up .got offsets for local syms, and space for local dynamic | |
8889 | relocs. */ | |
c72f2fb2 | 8890 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
a06ea964 NC |
8891 | { |
8892 | struct elf_aarch64_local_symbol *locals = NULL; | |
8893 | Elf_Internal_Shdr *symtab_hdr; | |
8894 | asection *srel; | |
8895 | unsigned int i; | |
8896 | ||
8897 | if (!is_aarch64_elf (ibfd)) | |
8898 | continue; | |
8899 | ||
8900 | for (s = ibfd->sections; s != NULL; s = s->next) | |
8901 | { | |
8902 | struct elf_dyn_relocs *p; | |
8903 | ||
8904 | for (p = (struct elf_dyn_relocs *) | |
8905 | (elf_section_data (s)->local_dynrel); p != NULL; p = p->next) | |
8906 | { | |
8907 | if (!bfd_is_abs_section (p->sec) | |
8908 | && bfd_is_abs_section (p->sec->output_section)) | |
8909 | { | |
8910 | /* Input section has been discarded, either because | |
8911 | it is a copy of a linkonce section or due to | |
8912 | linker script /DISCARD/, so we'll be discarding | |
8913 | the relocs too. */ | |
8914 | } | |
8915 | else if (p->count != 0) | |
8916 | { | |
8917 | srel = elf_section_data (p->sec)->sreloc; | |
8918 | srel->size += p->count * RELOC_SIZE (htab); | |
8919 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
8920 | info->flags |= DF_TEXTREL; | |
8921 | } | |
8922 | } | |
8923 | } | |
8924 | ||
cec5225b | 8925 | locals = elf_aarch64_locals (ibfd); |
a06ea964 NC |
8926 | if (!locals) |
8927 | continue; | |
8928 | ||
8929 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
8930 | srel = htab->root.srelgot; | |
8931 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
8932 | { | |
8933 | locals[i].got_offset = (bfd_vma) - 1; | |
8934 | locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
8935 | if (locals[i].got_refcount > 0) | |
8936 | { | |
8937 | unsigned got_type = locals[i].got_type; | |
8938 | if (got_type & GOT_TLSDESC_GD) | |
8939 | { | |
8940 | locals[i].tlsdesc_got_jump_table_offset = | |
8941 | (htab->root.sgotplt->size | |
8942 | - aarch64_compute_jump_table_size (htab)); | |
8943 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
8944 | locals[i].got_offset = (bfd_vma) - 2; | |
8945 | } | |
8946 | ||
8947 | if (got_type & GOT_TLS_GD) | |
8948 | { | |
8949 | locals[i].got_offset = htab->root.sgot->size; | |
8950 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
8951 | } | |
8952 | ||
b53b1bed JW |
8953 | if (got_type & GOT_TLS_IE |
8954 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
8955 | { |
8956 | locals[i].got_offset = htab->root.sgot->size; | |
8957 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8958 | } | |
8959 | ||
8960 | if (got_type == GOT_UNKNOWN) | |
8961 | { | |
8962 | } | |
8963 | ||
0e1862bb | 8964 | if (bfd_link_pic (info)) |
a06ea964 NC |
8965 | { |
8966 | if (got_type & GOT_TLSDESC_GD) | |
8967 | { | |
8968 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8969 | /* Note RELOC_COUNT not incremented here! */ | |
9bcc30e4 | 8970 | htab->root.tlsdesc_plt = (bfd_vma) - 1; |
a06ea964 NC |
8971 | } |
8972 | ||
8973 | if (got_type & GOT_TLS_GD) | |
8974 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
8975 | ||
b53b1bed JW |
8976 | if (got_type & GOT_TLS_IE |
8977 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
8978 | htab->root.srelgot->size += RELOC_SIZE (htab); |
8979 | } | |
8980 | } | |
8981 | else | |
8982 | { | |
8983 | locals[i].got_refcount = (bfd_vma) - 1; | |
8984 | } | |
8985 | } | |
8986 | } | |
8987 | ||
8988 | ||
8989 | /* Allocate global sym .plt and .got entries, and space for global | |
8990 | sym dynamic relocs. */ | |
cec5225b | 8991 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs, |
a06ea964 NC |
8992 | info); |
8993 | ||
1419bbe5 WN |
8994 | /* Allocate global ifunc sym .plt and .got entries, and space for global |
8995 | ifunc sym dynamic relocs. */ | |
8996 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs, | |
8997 | info); | |
8998 | ||
1419bbe5 WN |
8999 | /* Allocate .plt and .got entries, and space for local ifunc symbols. */ |
9000 | htab_traverse (htab->loc_hash_table, | |
9001 | elfNN_aarch64_allocate_local_ifunc_dynrelocs, | |
9002 | info); | |
a06ea964 NC |
9003 | |
9004 | /* For every jump slot reserved in the sgotplt, reloc_count is | |
9005 | incremented. However, when we reserve space for TLS descriptors, | |
9006 | it's not incremented, so in order to compute the space reserved | |
9007 | for them, it suffices to multiply the reloc count by the jump | |
9008 | slot size. */ | |
9009 | ||
9010 | if (htab->root.srelplt) | |
8847944f | 9011 | htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab); |
a06ea964 | 9012 | |
9bcc30e4 | 9013 | if (htab->root.tlsdesc_plt) |
a06ea964 NC |
9014 | { |
9015 | if (htab->root.splt->size == 0) | |
37c18eed | 9016 | htab->root.splt->size += htab->plt_header_size; |
a06ea964 | 9017 | |
a06ea964 | 9018 | /* If we're not using lazy TLS relocations, don't generate the |
ce12121b | 9019 | GOT and PLT entry required. */ |
9bcc30e4 L |
9020 | if ((info->flags & DF_BIND_NOW)) |
9021 | htab->root.tlsdesc_plt = 0; | |
9022 | else | |
a06ea964 | 9023 | { |
9bcc30e4 | 9024 | htab->root.tlsdesc_plt = htab->root.splt->size; |
ce12121b TC |
9025 | htab->root.splt->size += htab->tlsdesc_plt_entry_size; |
9026 | ||
9bcc30e4 | 9027 | htab->root.tlsdesc_got = htab->root.sgot->size; |
a06ea964 NC |
9028 | htab->root.sgot->size += GOT_ENTRY_SIZE; |
9029 | } | |
9030 | } | |
9031 | ||
68fcca92 | 9032 | /* Init mapping symbols information to use later to distingush between |
4106101c MS |
9033 | code and data while scanning for errata. */ |
9034 | if (htab->fix_erratum_835769 || htab->fix_erratum_843419) | |
68fcca92 JW |
9035 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
9036 | { | |
9037 | if (!is_aarch64_elf (ibfd)) | |
9038 | continue; | |
9039 | bfd_elfNN_aarch64_init_maps (ibfd); | |
9040 | } | |
9041 | ||
a06ea964 NC |
9042 | /* We now have determined the sizes of the various dynamic sections. |
9043 | Allocate memory for them. */ | |
0a1b45a2 | 9044 | relocs = false; |
a06ea964 NC |
9045 | for (s = dynobj->sections; s != NULL; s = s->next) |
9046 | { | |
9047 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9048 | continue; | |
9049 | ||
9050 | if (s == htab->root.splt | |
9051 | || s == htab->root.sgot | |
9052 | || s == htab->root.sgotplt | |
9053 | || s == htab->root.iplt | |
9d19e4fd | 9054 | || s == htab->root.igotplt |
5474d94f AM |
9055 | || s == htab->root.sdynbss |
9056 | || s == htab->root.sdynrelro) | |
a06ea964 NC |
9057 | { |
9058 | /* Strip this section if we don't need it; see the | |
9059 | comment below. */ | |
9060 | } | |
08dedd66 | 9061 | else if (startswith (bfd_section_name (s), ".rela")) |
a06ea964 NC |
9062 | { |
9063 | if (s->size != 0 && s != htab->root.srelplt) | |
0a1b45a2 | 9064 | relocs = true; |
a06ea964 NC |
9065 | |
9066 | /* We use the reloc_count field as a counter if we need | |
9067 | to copy relocs into the output file. */ | |
9068 | if (s != htab->root.srelplt) | |
9069 | s->reloc_count = 0; | |
9070 | } | |
9071 | else | |
9072 | { | |
9073 | /* It's not one of our sections, so don't allocate space. */ | |
9074 | continue; | |
9075 | } | |
9076 | ||
9077 | if (s->size == 0) | |
9078 | { | |
9079 | /* If we don't need this section, strip it from the | |
9080 | output file. This is mostly to handle .rela.bss and | |
9081 | .rela.plt. We must create both sections in | |
9082 | create_dynamic_sections, because they must be created | |
9083 | before the linker maps input sections to output | |
9084 | sections. The linker does that before | |
9085 | adjust_dynamic_symbol is called, and it is that | |
9086 | function which decides whether anything needs to go | |
9087 | into these sections. */ | |
a06ea964 NC |
9088 | s->flags |= SEC_EXCLUDE; |
9089 | continue; | |
9090 | } | |
9091 | ||
9092 | if ((s->flags & SEC_HAS_CONTENTS) == 0) | |
9093 | continue; | |
9094 | ||
9095 | /* Allocate memory for the section contents. We use bfd_zalloc | |
07d6d2b8 AM |
9096 | here in case unused entries are not reclaimed before the |
9097 | section's contents are written out. This should not happen, | |
9098 | but this way if it does, we get a R_AARCH64_NONE reloc instead | |
9099 | of garbage. */ | |
a06ea964 NC |
9100 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
9101 | if (s->contents == NULL) | |
0a1b45a2 | 9102 | return false; |
a06ea964 NC |
9103 | } |
9104 | ||
9105 | if (htab->root.dynamic_sections_created) | |
9106 | { | |
9107 | /* Add some entries to the .dynamic section. We fill in the | |
07d6d2b8 AM |
9108 | values later, in elfNN_aarch64_finish_dynamic_sections, but we |
9109 | must add the entries now so that we get the correct size for | |
9110 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
9111 | dynamic linker and used by the debugger. */ | |
a06ea964 NC |
9112 | #define add_dynamic_entry(TAG, VAL) \ |
9113 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
9114 | ||
3084d7a2 | 9115 | if (!_bfd_elf_add_dynamic_tags (output_bfd, info, relocs)) |
0a1b45a2 | 9116 | return false; |
a06ea964 NC |
9117 | |
9118 | if (htab->root.splt->size != 0) | |
9119 | { | |
823710d5 SN |
9120 | if (htab->variant_pcs |
9121 | && !add_dynamic_entry (DT_AARCH64_VARIANT_PCS, 0)) | |
0a1b45a2 | 9122 | return false; |
823710d5 | 9123 | |
1dbade74 SD |
9124 | if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_BTI_PAC) |
9125 | && (!add_dynamic_entry (DT_AARCH64_BTI_PLT, 0) | |
9126 | || !add_dynamic_entry (DT_AARCH64_PAC_PLT, 0))) | |
0a1b45a2 | 9127 | return false; |
1dbade74 SD |
9128 | |
9129 | else if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_BTI) | |
9130 | && !add_dynamic_entry (DT_AARCH64_BTI_PLT, 0)) | |
0a1b45a2 | 9131 | return false; |
1dbade74 SD |
9132 | |
9133 | else if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_PAC) | |
9134 | && !add_dynamic_entry (DT_AARCH64_PAC_PLT, 0)) | |
0a1b45a2 | 9135 | return false; |
a06ea964 | 9136 | } |
a06ea964 NC |
9137 | } |
9138 | #undef add_dynamic_entry | |
9139 | ||
0a1b45a2 | 9140 | return true; |
a06ea964 NC |
9141 | } |
9142 | ||
9143 | static inline void | |
caed7120 YZ |
9144 | elf_aarch64_update_plt_entry (bfd *output_bfd, |
9145 | bfd_reloc_code_real_type r_type, | |
9146 | bfd_byte *plt_entry, bfd_vma value) | |
a06ea964 | 9147 | { |
caed7120 YZ |
9148 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type); |
9149 | ||
1d75a8e2 NC |
9150 | /* FIXME: We should check the return value from this function call. */ |
9151 | (void) _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value); | |
a06ea964 NC |
9152 | } |
9153 | ||
9154 | static void | |
cec5225b YZ |
9155 | elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h, |
9156 | struct elf_aarch64_link_hash_table | |
1419bbe5 WN |
9157 | *htab, bfd *output_bfd, |
9158 | struct bfd_link_info *info) | |
a06ea964 NC |
9159 | { |
9160 | bfd_byte *plt_entry; | |
9161 | bfd_vma plt_index; | |
9162 | bfd_vma got_offset; | |
9163 | bfd_vma gotplt_entry_address; | |
9164 | bfd_vma plt_entry_address; | |
9165 | Elf_Internal_Rela rela; | |
9166 | bfd_byte *loc; | |
1419bbe5 WN |
9167 | asection *plt, *gotplt, *relplt; |
9168 | ||
9169 | /* When building a static executable, use .iplt, .igot.plt and | |
9170 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
9171 | if (htab->root.splt != NULL) | |
9172 | { | |
9173 | plt = htab->root.splt; | |
9174 | gotplt = htab->root.sgotplt; | |
9175 | relplt = htab->root.srelplt; | |
9176 | } | |
9177 | else | |
9178 | { | |
9179 | plt = htab->root.iplt; | |
9180 | gotplt = htab->root.igotplt; | |
9181 | relplt = htab->root.irelplt; | |
9182 | } | |
9183 | ||
9184 | /* Get the index in the procedure linkage table which | |
9185 | corresponds to this symbol. This is the index of this symbol | |
9186 | in all the symbols for which we are making plt entries. The | |
9187 | first entry in the procedure linkage table is reserved. | |
a06ea964 | 9188 | |
1419bbe5 WN |
9189 | Get the offset into the .got table of the entry that |
9190 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE | |
9191 | bytes. The first three are reserved for the dynamic linker. | |
692e2b8b | 9192 | |
1419bbe5 WN |
9193 | For static executables, we don't reserve anything. */ |
9194 | ||
9195 | if (plt == htab->root.splt) | |
9196 | { | |
9197 | plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size; | |
9198 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
9199 | } | |
9200 | else | |
9201 | { | |
9202 | plt_index = h->plt.offset / htab->plt_entry_size; | |
9203 | got_offset = plt_index * GOT_ENTRY_SIZE; | |
9204 | } | |
9205 | ||
9206 | plt_entry = plt->contents + h->plt.offset; | |
9207 | plt_entry_address = plt->output_section->vma | |
f44a1f8e | 9208 | + plt->output_offset + h->plt.offset; |
1419bbe5 WN |
9209 | gotplt_entry_address = gotplt->output_section->vma + |
9210 | gotplt->output_offset + got_offset; | |
a06ea964 NC |
9211 | |
9212 | /* Copy in the boiler-plate for the PLTn entry. */ | |
37c18eed SD |
9213 | memcpy (plt_entry, htab->plt_entry, htab->plt_entry_size); |
9214 | ||
9215 | /* First instruction in BTI enabled PLT stub is a BTI | |
9216 | instruction so skip it. */ | |
9217 | if (elf_aarch64_tdata (output_bfd)->plt_type & PLT_BTI | |
9218 | && elf_elfheader (output_bfd)->e_type == ET_EXEC) | |
9219 | plt_entry = plt_entry + 4; | |
a06ea964 NC |
9220 | |
9221 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
9222 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 YZ |
9223 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
9224 | plt_entry, | |
9225 | PG (gotplt_entry_address) - | |
9226 | PG (plt_entry_address)); | |
a06ea964 NC |
9227 | |
9228 | /* Fill in the lo12 bits for the load from the pltgot. */ | |
caed7120 YZ |
9229 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
9230 | plt_entry + 4, | |
9231 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 | 9232 | |
9aff4b7a | 9233 | /* Fill in the lo12 bits for the add from the pltgot entry. */ |
caed7120 YZ |
9234 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
9235 | plt_entry + 8, | |
9236 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 NC |
9237 | |
9238 | /* All the GOTPLT Entries are essentially initialized to PLT0. */ | |
cec5225b | 9239 | bfd_put_NN (output_bfd, |
1419bbe5 WN |
9240 | plt->output_section->vma + plt->output_offset, |
9241 | gotplt->contents + got_offset); | |
a06ea964 | 9242 | |
a06ea964 | 9243 | rela.r_offset = gotplt_entry_address; |
1419bbe5 WN |
9244 | |
9245 | if (h->dynindx == -1 | |
0e1862bb | 9246 | || ((bfd_link_executable (info) |
1419bbe5 WN |
9247 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
9248 | && h->def_regular | |
9249 | && h->type == STT_GNU_IFUNC)) | |
9250 | { | |
9251 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
9252 | R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */ | |
9253 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
9254 | rela.r_addend = (h->root.u.def.value | |
9255 | + h->root.u.def.section->output_section->vma | |
9256 | + h->root.u.def.section->output_offset); | |
9257 | } | |
9258 | else | |
9259 | { | |
9260 | /* Fill in the entry in the .rela.plt section. */ | |
9261 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT)); | |
9262 | rela.r_addend = 0; | |
9263 | } | |
a06ea964 NC |
9264 | |
9265 | /* Compute the relocation entry to used based on PLT index and do | |
9266 | not adjust reloc_count. The reloc_count has already been adjusted | |
9267 | to account for this entry. */ | |
1419bbe5 | 9268 | loc = relplt->contents + plt_index * RELOC_SIZE (htab); |
cec5225b | 9269 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
9270 | } |
9271 | ||
9272 | /* Size sections even though they're not dynamic. We use it to setup | |
9273 | _TLS_MODULE_BASE_, if needed. */ | |
9274 | ||
0a1b45a2 | 9275 | static bool |
cec5225b | 9276 | elfNN_aarch64_always_size_sections (bfd *output_bfd, |
a06ea964 NC |
9277 | struct bfd_link_info *info) |
9278 | { | |
9279 | asection *tls_sec; | |
9280 | ||
0e1862bb | 9281 | if (bfd_link_relocatable (info)) |
0a1b45a2 | 9282 | return true; |
a06ea964 NC |
9283 | |
9284 | tls_sec = elf_hash_table (info)->tls_sec; | |
9285 | ||
9286 | if (tls_sec) | |
9287 | { | |
9288 | struct elf_link_hash_entry *tlsbase; | |
9289 | ||
9290 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
0a1b45a2 | 9291 | "_TLS_MODULE_BASE_", true, true, false); |
a06ea964 NC |
9292 | |
9293 | if (tlsbase) | |
9294 | { | |
9295 | struct bfd_link_hash_entry *h = NULL; | |
9296 | const struct elf_backend_data *bed = | |
9297 | get_elf_backend_data (output_bfd); | |
9298 | ||
9299 | if (!(_bfd_generic_link_add_one_symbol | |
9300 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
0a1b45a2 AM |
9301 | tls_sec, 0, NULL, false, bed->collect, &h))) |
9302 | return false; | |
a06ea964 NC |
9303 | |
9304 | tlsbase->type = STT_TLS; | |
9305 | tlsbase = (struct elf_link_hash_entry *) h; | |
9306 | tlsbase->def_regular = 1; | |
9307 | tlsbase->other = STV_HIDDEN; | |
0a1b45a2 | 9308 | (*bed->elf_backend_hide_symbol) (info, tlsbase, true); |
a06ea964 NC |
9309 | } |
9310 | } | |
9311 | ||
0a1b45a2 | 9312 | return true; |
a06ea964 NC |
9313 | } |
9314 | ||
9315 | /* Finish up dynamic symbol handling. We set the contents of various | |
9316 | dynamic sections here. */ | |
2d0ca824 | 9317 | |
0a1b45a2 | 9318 | static bool |
cec5225b | 9319 | elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd, |
a06ea964 NC |
9320 | struct bfd_link_info *info, |
9321 | struct elf_link_hash_entry *h, | |
9322 | Elf_Internal_Sym *sym) | |
9323 | { | |
cec5225b YZ |
9324 | struct elf_aarch64_link_hash_table *htab; |
9325 | htab = elf_aarch64_hash_table (info); | |
a06ea964 NC |
9326 | |
9327 | if (h->plt.offset != (bfd_vma) - 1) | |
9328 | { | |
1419bbe5 WN |
9329 | asection *plt, *gotplt, *relplt; |
9330 | ||
a06ea964 | 9331 | /* This symbol has an entry in the procedure linkage table. Set |
07d6d2b8 | 9332 | it up. */ |
a06ea964 | 9333 | |
1419bbe5 WN |
9334 | /* When building a static executable, use .iplt, .igot.plt and |
9335 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
9336 | if (htab->root.splt != NULL) | |
9337 | { | |
9338 | plt = htab->root.splt; | |
9339 | gotplt = htab->root.sgotplt; | |
9340 | relplt = htab->root.srelplt; | |
9341 | } | |
9342 | else | |
9343 | { | |
9344 | plt = htab->root.iplt; | |
9345 | gotplt = htab->root.igotplt; | |
9346 | relplt = htab->root.irelplt; | |
9347 | } | |
9348 | ||
9349 | /* This symbol has an entry in the procedure linkage table. Set | |
9350 | it up. */ | |
9351 | if ((h->dynindx == -1 | |
0e1862bb | 9352 | && !((h->forced_local || bfd_link_executable (info)) |
1419bbe5 WN |
9353 | && h->def_regular |
9354 | && h->type == STT_GNU_IFUNC)) | |
9355 | || plt == NULL | |
9356 | || gotplt == NULL | |
9357 | || relplt == NULL) | |
0a1b45a2 | 9358 | return false; |
a06ea964 | 9359 | |
1419bbe5 | 9360 | elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info); |
a06ea964 NC |
9361 | if (!h->def_regular) |
9362 | { | |
9363 | /* Mark the symbol as undefined, rather than as defined in | |
46b87d49 | 9364 | the .plt section. */ |
a06ea964 | 9365 | sym->st_shndx = SHN_UNDEF; |
46b87d49 WN |
9366 | /* If the symbol is weak we need to clear the value. |
9367 | Otherwise, the PLT entry would provide a definition for | |
9368 | the symbol even if the symbol wasn't defined anywhere, | |
9369 | and so the symbol would never be NULL. Leave the value if | |
9370 | there were any relocations where pointer equality matters | |
9371 | (this is a clue for the dynamic linker, to make function | |
9372 | pointer comparisons work between an application and shared | |
9373 | library). */ | |
9374 | if (!h->ref_regular_nonweak || !h->pointer_equality_needed) | |
9375 | sym->st_value = 0; | |
a06ea964 NC |
9376 | } |
9377 | } | |
9378 | ||
9379 | if (h->got.offset != (bfd_vma) - 1 | |
a377ae2a SN |
9380 | && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL |
9381 | /* Undefined weak symbol in static PIE resolves to 0 without | |
9382 | any dynamic relocations. */ | |
9383 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
a06ea964 NC |
9384 | { |
9385 | Elf_Internal_Rela rela; | |
9386 | bfd_byte *loc; | |
9387 | ||
9388 | /* This symbol has an entry in the global offset table. Set it | |
07d6d2b8 | 9389 | up. */ |
a06ea964 NC |
9390 | if (htab->root.sgot == NULL || htab->root.srelgot == NULL) |
9391 | abort (); | |
9392 | ||
9393 | rela.r_offset = (htab->root.sgot->output_section->vma | |
9394 | + htab->root.sgot->output_offset | |
9395 | + (h->got.offset & ~(bfd_vma) 1)); | |
9396 | ||
49206388 WN |
9397 | if (h->def_regular |
9398 | && h->type == STT_GNU_IFUNC) | |
9399 | { | |
0e1862bb | 9400 | if (bfd_link_pic (info)) |
49206388 WN |
9401 | { |
9402 | /* Generate R_AARCH64_GLOB_DAT. */ | |
9403 | goto do_glob_dat; | |
9404 | } | |
9405 | else | |
9406 | { | |
9407 | asection *plt; | |
9408 | ||
9409 | if (!h->pointer_equality_needed) | |
9410 | abort (); | |
9411 | ||
9412 | /* For non-shared object, we can't use .got.plt, which | |
9413 | contains the real function address if we need pointer | |
9414 | equality. We load the GOT entry with the PLT entry. */ | |
9415 | plt = htab->root.splt ? htab->root.splt : htab->root.iplt; | |
9416 | bfd_put_NN (output_bfd, (plt->output_section->vma | |
9417 | + plt->output_offset | |
9418 | + h->plt.offset), | |
9419 | htab->root.sgot->contents | |
9420 | + (h->got.offset & ~(bfd_vma) 1)); | |
0a1b45a2 | 9421 | return true; |
49206388 WN |
9422 | } |
9423 | } | |
0e1862bb | 9424 | else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h)) |
a06ea964 | 9425 | { |
0ee3a6db | 9426 | if (!(h->def_regular || ELF_COMMON_DEF_P (h))) |
0a1b45a2 | 9427 | return false; |
a06ea964 NC |
9428 | |
9429 | BFD_ASSERT ((h->got.offset & 1) != 0); | |
a6bb11b2 | 9430 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); |
a06ea964 NC |
9431 | rela.r_addend = (h->root.u.def.value |
9432 | + h->root.u.def.section->output_section->vma | |
9433 | + h->root.u.def.section->output_offset); | |
9434 | } | |
9435 | else | |
9436 | { | |
dc1e8a47 | 9437 | do_glob_dat: |
a06ea964 | 9438 | BFD_ASSERT ((h->got.offset & 1) == 0); |
cec5225b | 9439 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 | 9440 | htab->root.sgot->contents + h->got.offset); |
a6bb11b2 | 9441 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT)); |
a06ea964 NC |
9442 | rela.r_addend = 0; |
9443 | } | |
9444 | ||
9445 | loc = htab->root.srelgot->contents; | |
9446 | loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 9447 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
9448 | } |
9449 | ||
9450 | if (h->needs_copy) | |
9451 | { | |
9452 | Elf_Internal_Rela rela; | |
5474d94f | 9453 | asection *s; |
a06ea964 NC |
9454 | bfd_byte *loc; |
9455 | ||
9456 | /* This symbol needs a copy reloc. Set it up. */ | |
a06ea964 NC |
9457 | if (h->dynindx == -1 |
9458 | || (h->root.type != bfd_link_hash_defined | |
9459 | && h->root.type != bfd_link_hash_defweak) | |
9d19e4fd | 9460 | || htab->root.srelbss == NULL) |
a06ea964 NC |
9461 | abort (); |
9462 | ||
9463 | rela.r_offset = (h->root.u.def.value | |
9464 | + h->root.u.def.section->output_section->vma | |
9465 | + h->root.u.def.section->output_offset); | |
a6bb11b2 | 9466 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY)); |
a06ea964 | 9467 | rela.r_addend = 0; |
afbf7e8e | 9468 | if (h->root.u.def.section == htab->root.sdynrelro) |
5474d94f AM |
9469 | s = htab->root.sreldynrelro; |
9470 | else | |
9471 | s = htab->root.srelbss; | |
9472 | loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 9473 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
9474 | } |
9475 | ||
9476 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may | |
9477 | be NULL for local symbols. */ | |
9478 | if (sym != NULL | |
9637f6ef | 9479 | && (h == elf_hash_table (info)->hdynamic |
a06ea964 NC |
9480 | || h == elf_hash_table (info)->hgot)) |
9481 | sym->st_shndx = SHN_ABS; | |
9482 | ||
0a1b45a2 | 9483 | return true; |
a06ea964 NC |
9484 | } |
9485 | ||
1419bbe5 WN |
9486 | /* Finish up local dynamic symbol handling. We set the contents of |
9487 | various dynamic sections here. */ | |
9488 | ||
1201fda6 | 9489 | static int |
1419bbe5 WN |
9490 | elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf) |
9491 | { | |
9492 | struct elf_link_hash_entry *h | |
9493 | = (struct elf_link_hash_entry *) *slot; | |
9494 | struct bfd_link_info *info | |
9495 | = (struct bfd_link_info *) inf; | |
9496 | ||
9497 | return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd, | |
9498 | info, h, NULL); | |
9499 | } | |
9500 | ||
a06ea964 | 9501 | static void |
cec5225b YZ |
9502 | elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED, |
9503 | struct elf_aarch64_link_hash_table | |
a06ea964 NC |
9504 | *htab) |
9505 | { | |
9506 | /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between | |
9507 | small and large plts and at the minute just generates | |
9508 | the small PLT. */ | |
9509 | ||
cec5225b | 9510 | /* PLT0 of the small PLT looks like this in ELF64 - |
a06ea964 NC |
9511 | stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack. |
9512 | adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT | |
9513 | ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the | |
9514 | // symbol resolver | |
9515 | add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the | |
9516 | // GOTPLT entry for this. | |
9517 | br x17 | |
cec5225b | 9518 | PLT0 will be slightly different in ELF32 due to different got entry |
2d0ca824 | 9519 | size. */ |
caed7120 | 9520 | bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */ |
a06ea964 NC |
9521 | bfd_vma plt_base; |
9522 | ||
9523 | ||
37c18eed SD |
9524 | memcpy (htab->root.splt->contents, htab->plt0_entry, |
9525 | htab->plt_header_size); | |
4d3bb356 SN |
9526 | |
9527 | /* PR 26312: Explicitly set the sh_entsize to 0 so that | |
9528 | consumers do not think that the section contains fixed | |
9529 | sized objects. */ | |
9530 | elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize = 0; | |
a06ea964 | 9531 | |
caed7120 YZ |
9532 | plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma |
9533 | + htab->root.sgotplt->output_offset | |
9534 | + GOT_ENTRY_SIZE * 2); | |
a06ea964 NC |
9535 | |
9536 | plt_base = htab->root.splt->output_section->vma + | |
f44a1f8e | 9537 | htab->root.splt->output_offset; |
a06ea964 | 9538 | |
37c18eed SD |
9539 | /* First instruction in BTI enabled PLT stub is a BTI |
9540 | instruction so skip it. */ | |
9541 | bfd_byte *plt0_entry = htab->root.splt->contents; | |
9542 | if (elf_aarch64_tdata (output_bfd)->plt_type & PLT_BTI) | |
9543 | plt0_entry = plt0_entry + 4; | |
9544 | ||
a06ea964 NC |
9545 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. |
9546 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 | 9547 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
37c18eed | 9548 | plt0_entry + 4, |
caed7120 | 9549 | PG (plt_got_2nd_ent) - PG (plt_base + 4)); |
a06ea964 | 9550 | |
caed7120 | 9551 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
37c18eed | 9552 | plt0_entry + 8, |
caed7120 | 9553 | PG_OFFSET (plt_got_2nd_ent)); |
a06ea964 | 9554 | |
caed7120 | 9555 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
37c18eed | 9556 | plt0_entry + 12, |
caed7120 | 9557 | PG_OFFSET (plt_got_2nd_ent)); |
a06ea964 NC |
9558 | } |
9559 | ||
0a1b45a2 | 9560 | static bool |
cec5225b | 9561 | elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd, |
a06ea964 NC |
9562 | struct bfd_link_info *info) |
9563 | { | |
cec5225b | 9564 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
9565 | bfd *dynobj; |
9566 | asection *sdyn; | |
9567 | ||
cec5225b | 9568 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
9569 | dynobj = htab->root.dynobj; |
9570 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); | |
9571 | ||
9572 | if (htab->root.dynamic_sections_created) | |
9573 | { | |
cec5225b | 9574 | ElfNN_External_Dyn *dyncon, *dynconend; |
a06ea964 NC |
9575 | |
9576 | if (sdyn == NULL || htab->root.sgot == NULL) | |
9577 | abort (); | |
9578 | ||
cec5225b YZ |
9579 | dyncon = (ElfNN_External_Dyn *) sdyn->contents; |
9580 | dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size); | |
a06ea964 NC |
9581 | for (; dyncon < dynconend; dyncon++) |
9582 | { | |
9583 | Elf_Internal_Dyn dyn; | |
9584 | asection *s; | |
9585 | ||
cec5225b | 9586 | bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn); |
a06ea964 NC |
9587 | |
9588 | switch (dyn.d_tag) | |
9589 | { | |
9590 | default: | |
9591 | continue; | |
9592 | ||
9593 | case DT_PLTGOT: | |
9594 | s = htab->root.sgotplt; | |
9595 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
9596 | break; | |
9597 | ||
9598 | case DT_JMPREL: | |
4ade44b7 AM |
9599 | s = htab->root.srelplt; |
9600 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
a06ea964 NC |
9601 | break; |
9602 | ||
9603 | case DT_PLTRELSZ: | |
c955de36 | 9604 | s = htab->root.srelplt; |
a06ea964 NC |
9605 | dyn.d_un.d_val = s->size; |
9606 | break; | |
9607 | ||
a06ea964 NC |
9608 | case DT_TLSDESC_PLT: |
9609 | s = htab->root.splt; | |
9610 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
9bcc30e4 | 9611 | + htab->root.tlsdesc_plt; |
a06ea964 NC |
9612 | break; |
9613 | ||
9614 | case DT_TLSDESC_GOT: | |
9615 | s = htab->root.sgot; | |
9bcc30e4 | 9616 | BFD_ASSERT (htab->root.tlsdesc_got != (bfd_vma)-1); |
a06ea964 | 9617 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset |
9bcc30e4 | 9618 | + htab->root.tlsdesc_got; |
a06ea964 NC |
9619 | break; |
9620 | } | |
9621 | ||
cec5225b | 9622 | bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon); |
a06ea964 NC |
9623 | } |
9624 | ||
9625 | } | |
9626 | ||
9627 | /* Fill in the special first entry in the procedure linkage table. */ | |
9628 | if (htab->root.splt && htab->root.splt->size > 0) | |
9629 | { | |
cec5225b | 9630 | elfNN_aarch64_init_small_plt0_entry (output_bfd, htab); |
a06ea964 | 9631 | |
9bcc30e4 | 9632 | if (htab->root.tlsdesc_plt && !(info->flags & DF_BIND_NOW)) |
a06ea964 | 9633 | { |
9bcc30e4 | 9634 | BFD_ASSERT (htab->root.tlsdesc_got != (bfd_vma)-1); |
cec5225b | 9635 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
9bcc30e4 | 9636 | htab->root.sgot->contents + htab->root.tlsdesc_got); |
a06ea964 | 9637 | |
37c18eed SD |
9638 | const bfd_byte *entry = elfNN_aarch64_tlsdesc_small_plt_entry; |
9639 | htab->tlsdesc_plt_entry_size = PLT_TLSDESC_ENTRY_SIZE; | |
9640 | ||
9641 | aarch64_plt_type type = elf_aarch64_tdata (output_bfd)->plt_type; | |
1dbade74 | 9642 | if (type == PLT_BTI || type == PLT_BTI_PAC) |
37c18eed SD |
9643 | { |
9644 | entry = elfNN_aarch64_tlsdesc_small_plt_bti_entry; | |
37c18eed SD |
9645 | } |
9646 | ||
9bcc30e4 | 9647 | memcpy (htab->root.splt->contents + htab->root.tlsdesc_plt, |
37c18eed | 9648 | entry, htab->tlsdesc_plt_entry_size); |
a06ea964 NC |
9649 | |
9650 | { | |
9651 | bfd_vma adrp1_addr = | |
9652 | htab->root.splt->output_section->vma | |
9bcc30e4 L |
9653 | + htab->root.splt->output_offset |
9654 | + htab->root.tlsdesc_plt + 4; | |
a06ea964 | 9655 | |
caed7120 | 9656 | bfd_vma adrp2_addr = adrp1_addr + 4; |
a06ea964 NC |
9657 | |
9658 | bfd_vma got_addr = | |
9659 | htab->root.sgot->output_section->vma | |
9660 | + htab->root.sgot->output_offset; | |
9661 | ||
9662 | bfd_vma pltgot_addr = | |
9663 | htab->root.sgotplt->output_section->vma | |
9664 | + htab->root.sgotplt->output_offset; | |
9665 | ||
9bcc30e4 | 9666 | bfd_vma dt_tlsdesc_got = got_addr + htab->root.tlsdesc_got; |
caed7120 YZ |
9667 | |
9668 | bfd_byte *plt_entry = | |
9bcc30e4 | 9669 | htab->root.splt->contents + htab->root.tlsdesc_plt; |
a06ea964 | 9670 | |
37c18eed SD |
9671 | /* First instruction in BTI enabled PLT stub is a BTI |
9672 | instruction so skip it. */ | |
9673 | if (type & PLT_BTI) | |
9674 | { | |
9675 | plt_entry = plt_entry + 4; | |
9676 | adrp1_addr = adrp1_addr + 4; | |
9677 | adrp2_addr = adrp2_addr + 4; | |
9678 | } | |
9679 | ||
a06ea964 | 9680 | /* adrp x2, DT_TLSDESC_GOT */ |
caed7120 YZ |
9681 | elf_aarch64_update_plt_entry (output_bfd, |
9682 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
9683 | plt_entry + 4, | |
9684 | (PG (dt_tlsdesc_got) | |
9685 | - PG (adrp1_addr))); | |
a06ea964 NC |
9686 | |
9687 | /* adrp x3, 0 */ | |
caed7120 YZ |
9688 | elf_aarch64_update_plt_entry (output_bfd, |
9689 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
9690 | plt_entry + 8, | |
9691 | (PG (pltgot_addr) | |
9692 | - PG (adrp2_addr))); | |
a06ea964 NC |
9693 | |
9694 | /* ldr x2, [x2, #0] */ | |
caed7120 YZ |
9695 | elf_aarch64_update_plt_entry (output_bfd, |
9696 | BFD_RELOC_AARCH64_LDSTNN_LO12, | |
9697 | plt_entry + 12, | |
9698 | PG_OFFSET (dt_tlsdesc_got)); | |
a06ea964 NC |
9699 | |
9700 | /* add x3, x3, 0 */ | |
caed7120 YZ |
9701 | elf_aarch64_update_plt_entry (output_bfd, |
9702 | BFD_RELOC_AARCH64_ADD_LO12, | |
9703 | plt_entry + 16, | |
9704 | PG_OFFSET (pltgot_addr)); | |
a06ea964 NC |
9705 | } |
9706 | } | |
9707 | } | |
9708 | ||
9709 | if (htab->root.sgotplt) | |
9710 | { | |
9711 | if (bfd_is_abs_section (htab->root.sgotplt->output_section)) | |
9712 | { | |
4eca0228 | 9713 | _bfd_error_handler |
871b3ab2 | 9714 | (_("discarded output section: `%pA'"), htab->root.sgotplt); |
0a1b45a2 | 9715 | return false; |
a06ea964 NC |
9716 | } |
9717 | ||
9718 | /* Fill in the first three entries in the global offset table. */ | |
9719 | if (htab->root.sgotplt->size > 0) | |
9720 | { | |
8db339a6 MS |
9721 | bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents); |
9722 | ||
a06ea964 | 9723 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ |
cec5225b | 9724 | bfd_put_NN (output_bfd, |
a06ea964 NC |
9725 | (bfd_vma) 0, |
9726 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE); | |
cec5225b | 9727 | bfd_put_NN (output_bfd, |
a06ea964 NC |
9728 | (bfd_vma) 0, |
9729 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2); | |
9730 | } | |
9731 | ||
8db339a6 MS |
9732 | if (htab->root.sgot) |
9733 | { | |
9734 | if (htab->root.sgot->size > 0) | |
9735 | { | |
9736 | bfd_vma addr = | |
9737 | sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0; | |
9738 | bfd_put_NN (output_bfd, addr, htab->root.sgot->contents); | |
9739 | } | |
9740 | } | |
9741 | ||
a06ea964 NC |
9742 | elf_section_data (htab->root.sgotplt->output_section)-> |
9743 | this_hdr.sh_entsize = GOT_ENTRY_SIZE; | |
9744 | } | |
9745 | ||
9746 | if (htab->root.sgot && htab->root.sgot->size > 0) | |
9747 | elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize | |
9748 | = GOT_ENTRY_SIZE; | |
9749 | ||
1419bbe5 WN |
9750 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
9751 | htab_traverse (htab->loc_hash_table, | |
9752 | elfNN_aarch64_finish_local_dynamic_symbol, | |
9753 | info); | |
9754 | ||
0a1b45a2 | 9755 | return true; |
a06ea964 NC |
9756 | } |
9757 | ||
37c18eed SD |
9758 | /* Check if BTI enabled PLTs are needed. Returns the type needed. */ |
9759 | static aarch64_plt_type | |
9760 | get_plt_type (bfd *abfd) | |
9761 | { | |
9762 | aarch64_plt_type ret = PLT_NORMAL; | |
9763 | bfd_byte *contents, *extdyn, *extdynend; | |
9764 | asection *sec = bfd_get_section_by_name (abfd, ".dynamic"); | |
8ef22662 AM |
9765 | if (!sec |
9766 | || sec->size < sizeof (ElfNN_External_Dyn) | |
9767 | || !bfd_malloc_and_get_section (abfd, sec, &contents)) | |
37c18eed SD |
9768 | return ret; |
9769 | extdyn = contents; | |
8ef22662 AM |
9770 | extdynend = contents + sec->size - sizeof (ElfNN_External_Dyn); |
9771 | for (; extdyn <= extdynend; extdyn += sizeof (ElfNN_External_Dyn)) | |
37c18eed SD |
9772 | { |
9773 | Elf_Internal_Dyn dyn; | |
9774 | bfd_elfNN_swap_dyn_in (abfd, extdyn, &dyn); | |
9775 | ||
9776 | /* Let's check the processor specific dynamic array tags. */ | |
9777 | bfd_vma tag = dyn.d_tag; | |
9778 | if (tag < DT_LOPROC || tag > DT_HIPROC) | |
9779 | continue; | |
9780 | ||
9781 | switch (tag) | |
9782 | { | |
9783 | case DT_AARCH64_BTI_PLT: | |
1dbade74 SD |
9784 | ret |= PLT_BTI; |
9785 | break; | |
9786 | ||
9787 | case DT_AARCH64_PAC_PLT: | |
9788 | ret |= PLT_PAC; | |
37c18eed SD |
9789 | break; |
9790 | ||
9791 | default: break; | |
9792 | } | |
9793 | } | |
9794 | free (contents); | |
9795 | return ret; | |
9796 | } | |
9797 | ||
9798 | static long | |
9799 | elfNN_aarch64_get_synthetic_symtab (bfd *abfd, | |
9800 | long symcount, | |
9801 | asymbol **syms, | |
9802 | long dynsymcount, | |
9803 | asymbol **dynsyms, | |
9804 | asymbol **ret) | |
9805 | { | |
9806 | elf_aarch64_tdata (abfd)->plt_type = get_plt_type (abfd); | |
9807 | return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms, | |
9808 | dynsymcount, dynsyms, ret); | |
9809 | } | |
9810 | ||
a06ea964 NC |
9811 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
9812 | or (bfd_vma) -1 if it should not be included. */ | |
9813 | ||
9814 | static bfd_vma | |
cec5225b | 9815 | elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt, |
a06ea964 NC |
9816 | const arelent *rel ATTRIBUTE_UNUSED) |
9817 | { | |
37c18eed SD |
9818 | size_t plt0_size = PLT_ENTRY_SIZE; |
9819 | size_t pltn_size = PLT_SMALL_ENTRY_SIZE; | |
9820 | ||
1dbade74 SD |
9821 | if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_BTI_PAC) |
9822 | { | |
1dbade74 SD |
9823 | if (elf_elfheader (plt->owner)->e_type == ET_EXEC) |
9824 | pltn_size = PLT_BTI_PAC_SMALL_ENTRY_SIZE; | |
9825 | else | |
9826 | pltn_size = PLT_PAC_SMALL_ENTRY_SIZE; | |
9827 | } | |
9828 | else if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_BTI) | |
37c18eed | 9829 | { |
37c18eed SD |
9830 | if (elf_elfheader (plt->owner)->e_type == ET_EXEC) |
9831 | pltn_size = PLT_BTI_SMALL_ENTRY_SIZE; | |
9832 | } | |
1dbade74 SD |
9833 | else if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_PAC) |
9834 | { | |
1dbade74 SD |
9835 | pltn_size = PLT_PAC_SMALL_ENTRY_SIZE; |
9836 | } | |
9837 | ||
37c18eed | 9838 | return plt->vma + plt0_size + i * pltn_size; |
a06ea964 NC |
9839 | } |
9840 | ||
d691934d NC |
9841 | /* Returns TRUE if NAME is an AArch64 mapping symbol. |
9842 | The ARM ELF standard defines $x (for A64 code) and $d (for data). | |
9843 | It also allows a period initiated suffix to be added to the symbol, ie: | |
9844 | "$[adtx]\.[:sym_char]+". */ | |
9845 | ||
0a1b45a2 | 9846 | static bool |
d691934d NC |
9847 | is_aarch64_mapping_symbol (const char * name) |
9848 | { | |
9849 | return name != NULL /* Paranoia. */ | |
9850 | && name[0] == '$' /* Note: if objcopy --prefix-symbols has been used then | |
9851 | the mapping symbols could have acquired a prefix. | |
9852 | We do not support this here, since such symbols no | |
9853 | longer conform to the ARM ELF ABI. */ | |
9854 | && (name[1] == 'd' || name[1] == 'x') | |
9855 | && (name[2] == 0 || name[2] == '.'); | |
9856 | /* FIXME: Strictly speaking the symbol is only a valid mapping symbol if | |
9857 | any characters that follow the period are legal characters for the body | |
9858 | of a symbol's name. For now we just assume that this is the case. */ | |
9859 | } | |
9860 | ||
9861 | /* Make sure that mapping symbols in object files are not removed via the | |
9862 | "strip --strip-unneeded" tool. These symbols might needed in order to | |
9863 | correctly generate linked files. Once an object file has been linked, | |
9864 | it should be safe to remove them. */ | |
9865 | ||
9866 | static void | |
9867 | elfNN_aarch64_backend_symbol_processing (bfd *abfd, asymbol *sym) | |
9868 | { | |
9869 | if (((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
9870 | && sym->section != bfd_abs_section_ptr | |
9871 | && is_aarch64_mapping_symbol (sym->name)) | |
9872 | sym->flags |= BSF_KEEP; | |
9873 | } | |
9874 | ||
cd702818 SD |
9875 | /* Implement elf_backend_setup_gnu_properties for AArch64. It serves as a |
9876 | wrapper function for _bfd_aarch64_elf_link_setup_gnu_properties to account | |
9877 | for the effect of GNU properties of the output_bfd. */ | |
9878 | static bfd * | |
9879 | elfNN_aarch64_link_setup_gnu_properties (struct bfd_link_info *info) | |
9880 | { | |
9881 | uint32_t prop = elf_aarch64_tdata (info->output_bfd)->gnu_and_prop; | |
9882 | bfd *pbfd = _bfd_aarch64_elf_link_setup_gnu_properties (info, &prop); | |
9883 | elf_aarch64_tdata (info->output_bfd)->gnu_and_prop = prop; | |
37c18eed SD |
9884 | elf_aarch64_tdata (info->output_bfd)->plt_type |
9885 | |= (prop & GNU_PROPERTY_AARCH64_FEATURE_1_BTI) ? PLT_BTI : 0; | |
9886 | setup_plt_values (info, elf_aarch64_tdata (info->output_bfd)->plt_type); | |
cd702818 SD |
9887 | return pbfd; |
9888 | } | |
9889 | ||
9890 | /* Implement elf_backend_merge_gnu_properties for AArch64. It serves as a | |
9891 | wrapper function for _bfd_aarch64_elf_merge_gnu_properties to account | |
9892 | for the effect of GNU properties of the output_bfd. */ | |
0a1b45a2 | 9893 | static bool |
cd702818 | 9894 | elfNN_aarch64_merge_gnu_properties (struct bfd_link_info *info, |
4e539114 | 9895 | bfd *abfd, bfd *bbfd, |
cd702818 SD |
9896 | elf_property *aprop, |
9897 | elf_property *bprop) | |
9898 | { | |
9899 | uint32_t prop | |
9900 | = elf_aarch64_tdata (info->output_bfd)->gnu_and_prop; | |
37c18eed SD |
9901 | |
9902 | /* If output has been marked with BTI using command line argument, give out | |
9903 | warning if necessary. */ | |
4e539114 SD |
9904 | /* Properties are merged per type, hence only check for warnings when merging |
9905 | GNU_PROPERTY_AARCH64_FEATURE_1_AND. */ | |
9906 | if (((aprop && aprop->pr_type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) | |
9907 | || (bprop && bprop->pr_type == GNU_PROPERTY_AARCH64_FEATURE_1_AND)) | |
9908 | && (prop & GNU_PROPERTY_AARCH64_FEATURE_1_BTI) | |
37c18eed SD |
9909 | && (!elf_aarch64_tdata (info->output_bfd)->no_bti_warn)) |
9910 | { | |
9911 | if ((aprop && !(aprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI)) | |
4e539114 | 9912 | || !aprop) |
37c18eed | 9913 | { |
8bf6d176 | 9914 | _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when " |
4e539114 SD |
9915 | "all inputs do not have BTI in NOTE section."), |
9916 | abfd); | |
9917 | } | |
9918 | if ((bprop && !(bprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI)) | |
9919 | || !bprop) | |
9920 | { | |
8bf6d176 | 9921 | _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when " |
4e539114 SD |
9922 | "all inputs do not have BTI in NOTE section."), |
9923 | bbfd); | |
37c18eed SD |
9924 | } |
9925 | } | |
9926 | ||
cd702818 SD |
9927 | return _bfd_aarch64_elf_merge_gnu_properties (info, abfd, aprop, |
9928 | bprop, prop); | |
9929 | } | |
a06ea964 NC |
9930 | |
9931 | /* We use this so we can override certain functions | |
9932 | (though currently we don't). */ | |
9933 | ||
cec5225b | 9934 | const struct elf_size_info elfNN_aarch64_size_info = |
a06ea964 | 9935 | { |
cec5225b YZ |
9936 | sizeof (ElfNN_External_Ehdr), |
9937 | sizeof (ElfNN_External_Phdr), | |
9938 | sizeof (ElfNN_External_Shdr), | |
9939 | sizeof (ElfNN_External_Rel), | |
9940 | sizeof (ElfNN_External_Rela), | |
9941 | sizeof (ElfNN_External_Sym), | |
9942 | sizeof (ElfNN_External_Dyn), | |
a06ea964 NC |
9943 | sizeof (Elf_External_Note), |
9944 | 4, /* Hash table entry size. */ | |
9945 | 1, /* Internal relocs per external relocs. */ | |
cec5225b YZ |
9946 | ARCH_SIZE, /* Arch size. */ |
9947 | LOG_FILE_ALIGN, /* Log_file_align. */ | |
9948 | ELFCLASSNN, EV_CURRENT, | |
9949 | bfd_elfNN_write_out_phdrs, | |
9950 | bfd_elfNN_write_shdrs_and_ehdr, | |
9951 | bfd_elfNN_checksum_contents, | |
9952 | bfd_elfNN_write_relocs, | |
9953 | bfd_elfNN_swap_symbol_in, | |
9954 | bfd_elfNN_swap_symbol_out, | |
9955 | bfd_elfNN_slurp_reloc_table, | |
9956 | bfd_elfNN_slurp_symbol_table, | |
9957 | bfd_elfNN_swap_dyn_in, | |
9958 | bfd_elfNN_swap_dyn_out, | |
9959 | bfd_elfNN_swap_reloc_in, | |
9960 | bfd_elfNN_swap_reloc_out, | |
9961 | bfd_elfNN_swap_reloca_in, | |
9962 | bfd_elfNN_swap_reloca_out | |
a06ea964 NC |
9963 | }; |
9964 | ||
9965 | #define ELF_ARCH bfd_arch_aarch64 | |
9966 | #define ELF_MACHINE_CODE EM_AARCH64 | |
9967 | #define ELF_MAXPAGESIZE 0x10000 | |
a06ea964 NC |
9968 | #define ELF_COMMONPAGESIZE 0x1000 |
9969 | ||
07d6d2b8 | 9970 | #define bfd_elfNN_close_and_cleanup \ |
cec5225b | 9971 | elfNN_aarch64_close_and_cleanup |
a06ea964 | 9972 | |
07d6d2b8 | 9973 | #define bfd_elfNN_bfd_free_cached_info \ |
cec5225b | 9974 | elfNN_aarch64_bfd_free_cached_info |
a06ea964 | 9975 | |
cec5225b YZ |
9976 | #define bfd_elfNN_bfd_is_target_special_symbol \ |
9977 | elfNN_aarch64_is_target_special_symbol | |
a06ea964 | 9978 | |
07d6d2b8 | 9979 | #define bfd_elfNN_bfd_link_hash_table_create \ |
cec5225b | 9980 | elfNN_aarch64_link_hash_table_create |
a06ea964 | 9981 | |
cec5225b YZ |
9982 | #define bfd_elfNN_bfd_merge_private_bfd_data \ |
9983 | elfNN_aarch64_merge_private_bfd_data | |
a06ea964 | 9984 | |
cec5225b YZ |
9985 | #define bfd_elfNN_bfd_print_private_bfd_data \ |
9986 | elfNN_aarch64_print_private_bfd_data | |
a06ea964 | 9987 | |
cec5225b YZ |
9988 | #define bfd_elfNN_bfd_reloc_type_lookup \ |
9989 | elfNN_aarch64_reloc_type_lookup | |
a06ea964 | 9990 | |
cec5225b YZ |
9991 | #define bfd_elfNN_bfd_reloc_name_lookup \ |
9992 | elfNN_aarch64_reloc_name_lookup | |
a06ea964 | 9993 | |
cec5225b YZ |
9994 | #define bfd_elfNN_bfd_set_private_flags \ |
9995 | elfNN_aarch64_set_private_flags | |
a06ea964 | 9996 | |
cec5225b YZ |
9997 | #define bfd_elfNN_find_inliner_info \ |
9998 | elfNN_aarch64_find_inliner_info | |
a06ea964 | 9999 | |
37c18eed SD |
10000 | #define bfd_elfNN_get_synthetic_symtab \ |
10001 | elfNN_aarch64_get_synthetic_symtab | |
10002 | ||
cec5225b YZ |
10003 | #define bfd_elfNN_mkobject \ |
10004 | elfNN_aarch64_mkobject | |
a06ea964 | 10005 | |
cec5225b YZ |
10006 | #define bfd_elfNN_new_section_hook \ |
10007 | elfNN_aarch64_new_section_hook | |
a06ea964 NC |
10008 | |
10009 | #define elf_backend_adjust_dynamic_symbol \ | |
cec5225b | 10010 | elfNN_aarch64_adjust_dynamic_symbol |
a06ea964 NC |
10011 | |
10012 | #define elf_backend_always_size_sections \ | |
cec5225b | 10013 | elfNN_aarch64_always_size_sections |
a06ea964 NC |
10014 | |
10015 | #define elf_backend_check_relocs \ | |
cec5225b | 10016 | elfNN_aarch64_check_relocs |
a06ea964 NC |
10017 | |
10018 | #define elf_backend_copy_indirect_symbol \ | |
cec5225b | 10019 | elfNN_aarch64_copy_indirect_symbol |
a06ea964 | 10020 | |
823710d5 SN |
10021 | #define elf_backend_merge_symbol_attribute \ |
10022 | elfNN_aarch64_merge_symbol_attribute | |
10023 | ||
a06ea964 NC |
10024 | /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts |
10025 | to them in our hash. */ | |
10026 | #define elf_backend_create_dynamic_sections \ | |
cec5225b | 10027 | elfNN_aarch64_create_dynamic_sections |
a06ea964 NC |
10028 | |
10029 | #define elf_backend_init_index_section \ | |
10030 | _bfd_elf_init_2_index_sections | |
10031 | ||
a06ea964 | 10032 | #define elf_backend_finish_dynamic_sections \ |
cec5225b | 10033 | elfNN_aarch64_finish_dynamic_sections |
a06ea964 NC |
10034 | |
10035 | #define elf_backend_finish_dynamic_symbol \ | |
cec5225b | 10036 | elfNN_aarch64_finish_dynamic_symbol |
a06ea964 | 10037 | |
a06ea964 | 10038 | #define elf_backend_object_p \ |
cec5225b | 10039 | elfNN_aarch64_object_p |
a06ea964 | 10040 | |
07d6d2b8 | 10041 | #define elf_backend_output_arch_local_syms \ |
cec5225b | 10042 | elfNN_aarch64_output_arch_local_syms |
a06ea964 | 10043 | |
e7679060 AM |
10044 | #define elf_backend_maybe_function_sym \ |
10045 | elfNN_aarch64_maybe_function_sym | |
10046 | ||
a06ea964 | 10047 | #define elf_backend_plt_sym_val \ |
cec5225b | 10048 | elfNN_aarch64_plt_sym_val |
a06ea964 | 10049 | |
ed7e9d0b AM |
10050 | #define elf_backend_init_file_header \ |
10051 | elfNN_aarch64_init_file_header | |
a06ea964 NC |
10052 | |
10053 | #define elf_backend_relocate_section \ | |
cec5225b | 10054 | elfNN_aarch64_relocate_section |
a06ea964 NC |
10055 | |
10056 | #define elf_backend_reloc_type_class \ | |
cec5225b | 10057 | elfNN_aarch64_reloc_type_class |
a06ea964 | 10058 | |
a06ea964 | 10059 | #define elf_backend_section_from_shdr \ |
cec5225b | 10060 | elfNN_aarch64_section_from_shdr |
a06ea964 NC |
10061 | |
10062 | #define elf_backend_size_dynamic_sections \ | |
cec5225b | 10063 | elfNN_aarch64_size_dynamic_sections |
a06ea964 NC |
10064 | |
10065 | #define elf_backend_size_info \ | |
cec5225b | 10066 | elfNN_aarch64_size_info |
a06ea964 | 10067 | |
68fcca92 JW |
10068 | #define elf_backend_write_section \ |
10069 | elfNN_aarch64_write_section | |
10070 | ||
d691934d NC |
10071 | #define elf_backend_symbol_processing \ |
10072 | elfNN_aarch64_backend_symbol_processing | |
10073 | ||
cd702818 SD |
10074 | #define elf_backend_setup_gnu_properties \ |
10075 | elfNN_aarch64_link_setup_gnu_properties | |
10076 | ||
10077 | #define elf_backend_merge_gnu_properties \ | |
10078 | elfNN_aarch64_merge_gnu_properties | |
10079 | ||
a06ea964 | 10080 | #define elf_backend_can_refcount 1 |
59c108f7 | 10081 | #define elf_backend_can_gc_sections 1 |
a06ea964 NC |
10082 | #define elf_backend_plt_readonly 1 |
10083 | #define elf_backend_want_got_plt 1 | |
10084 | #define elf_backend_want_plt_sym 0 | |
5474d94f | 10085 | #define elf_backend_want_dynrelro 1 |
a06ea964 NC |
10086 | #define elf_backend_may_use_rel_p 0 |
10087 | #define elf_backend_may_use_rela_p 1 | |
10088 | #define elf_backend_default_use_rela_p 1 | |
07d6d2b8 | 10089 | #define elf_backend_rela_normal 1 |
64f52338 | 10090 | #define elf_backend_dtrel_excludes_plt 1 |
a06ea964 | 10091 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3) |
c495064d | 10092 | #define elf_backend_default_execstack 0 |
32f573bc | 10093 | #define elf_backend_extern_protected_data 1 |
7f784814 | 10094 | #define elf_backend_hash_symbol elf_aarch64_hash_symbol |
a06ea964 | 10095 | |
07d6d2b8 | 10096 | #undef elf_backend_obj_attrs_section |
a06ea964 NC |
10097 | #define elf_backend_obj_attrs_section ".ARM.attributes" |
10098 | ||
cec5225b | 10099 | #include "elfNN-target.h" |
a75cf613 ES |
10100 | |
10101 | /* CloudABI support. */ | |
10102 | ||
10103 | #undef TARGET_LITTLE_SYM | |
10104 | #define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec | |
10105 | #undef TARGET_LITTLE_NAME | |
10106 | #define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi" | |
10107 | #undef TARGET_BIG_SYM | |
10108 | #define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec | |
10109 | #undef TARGET_BIG_NAME | |
10110 | #define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi" | |
10111 | ||
10112 | #undef ELF_OSABI | |
10113 | #define ELF_OSABI ELFOSABI_CLOUDABI | |
10114 | ||
10115 | #undef elfNN_bed | |
10116 | #define elfNN_bed elfNN_aarch64_cloudabi_bed | |
10117 | ||
10118 | #include "elfNN-target.h" |