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cec5225b | 1 | /* AArch64-specific support for NN-bit ELF. |
b3adc24a | 2 | Copyright (C) 2009-2020 Free Software Foundation, Inc. |
a06ea964 NC |
3 | Contributed by ARM Ltd. |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; see the file COPYING3. If not, | |
19 | see <http://www.gnu.org/licenses/>. */ | |
20 | ||
21 | /* Notes on implementation: | |
22 | ||
23 | Thread Local Store (TLS) | |
24 | ||
25 | Overview: | |
26 | ||
27 | The implementation currently supports both traditional TLS and TLS | |
28 | descriptors, but only general dynamic (GD). | |
29 | ||
30 | For traditional TLS the assembler will present us with code | |
31 | fragments of the form: | |
32 | ||
33 | adrp x0, :tlsgd:foo | |
07d6d2b8 | 34 | R_AARCH64_TLSGD_ADR_PAGE21(foo) |
a06ea964 | 35 | add x0, :tlsgd_lo12:foo |
07d6d2b8 | 36 | R_AARCH64_TLSGD_ADD_LO12_NC(foo) |
a06ea964 NC |
37 | bl __tls_get_addr |
38 | nop | |
39 | ||
40 | For TLS descriptors the assembler will present us with code | |
41 | fragments of the form: | |
42 | ||
07d6d2b8 AM |
43 | adrp x0, :tlsdesc:foo R_AARCH64_TLSDESC_ADR_PAGE21(foo) |
44 | ldr x1, [x0, #:tlsdesc_lo12:foo] R_AARCH64_TLSDESC_LD64_LO12(foo) | |
45 | add x0, x0, #:tlsdesc_lo12:foo R_AARCH64_TLSDESC_ADD_LO12(foo) | |
a06ea964 | 46 | .tlsdesccall foo |
07d6d2b8 | 47 | blr x1 R_AARCH64_TLSDESC_CALL(foo) |
a06ea964 NC |
48 | |
49 | The relocations R_AARCH64_TLSGD_{ADR_PREL21,ADD_LO12_NC} against foo | |
50 | indicate that foo is thread local and should be accessed via the | |
51 | traditional TLS mechanims. | |
52 | ||
a6bb11b2 | 53 | The relocations R_AARCH64_TLSDESC_{ADR_PAGE21,LD64_LO12_NC,ADD_LO12_NC} |
a06ea964 NC |
54 | against foo indicate that 'foo' is thread local and should be accessed |
55 | via a TLS descriptor mechanism. | |
56 | ||
57 | The precise instruction sequence is only relevant from the | |
58 | perspective of linker relaxation which is currently not implemented. | |
59 | ||
60 | The static linker must detect that 'foo' is a TLS object and | |
61 | allocate a double GOT entry. The GOT entry must be created for both | |
62 | global and local TLS symbols. Note that this is different to none | |
63 | TLS local objects which do not need a GOT entry. | |
64 | ||
65 | In the traditional TLS mechanism, the double GOT entry is used to | |
66 | provide the tls_index structure, containing module and offset | |
a6bb11b2 | 67 | entries. The static linker places the relocation R_AARCH64_TLS_DTPMOD |
a06ea964 NC |
68 | on the module entry. The loader will subsequently fixup this |
69 | relocation with the module identity. | |
70 | ||
71 | For global traditional TLS symbols the static linker places an | |
a6bb11b2 | 72 | R_AARCH64_TLS_DTPREL relocation on the offset entry. The loader |
a06ea964 NC |
73 | will subsequently fixup the offset. For local TLS symbols the static |
74 | linker fixes up offset. | |
75 | ||
76 | In the TLS descriptor mechanism the double GOT entry is used to | |
77 | provide the descriptor. The static linker places the relocation | |
78 | R_AARCH64_TLSDESC on the first GOT slot. The loader will | |
79 | subsequently fix this up. | |
80 | ||
81 | Implementation: | |
82 | ||
83 | The handling of TLS symbols is implemented across a number of | |
84 | different backend functions. The following is a top level view of | |
85 | what processing is performed where. | |
86 | ||
87 | The TLS implementation maintains state information for each TLS | |
88 | symbol. The state information for local and global symbols is kept | |
89 | in different places. Global symbols use generic BFD structures while | |
90 | local symbols use backend specific structures that are allocated and | |
91 | maintained entirely by the backend. | |
92 | ||
93 | The flow: | |
94 | ||
cec5225b | 95 | elfNN_aarch64_check_relocs() |
a06ea964 NC |
96 | |
97 | This function is invoked for each relocation. | |
98 | ||
99 | The TLS relocations R_AARCH64_TLSGD_{ADR_PREL21,ADD_LO12_NC} and | |
a6bb11b2 | 100 | R_AARCH64_TLSDESC_{ADR_PAGE21,LD64_LO12_NC,ADD_LO12_NC} are |
a06ea964 NC |
101 | spotted. One time creation of local symbol data structures are |
102 | created when the first local symbol is seen. | |
103 | ||
104 | The reference count for a symbol is incremented. The GOT type for | |
105 | each symbol is marked as general dynamic. | |
106 | ||
cec5225b | 107 | elfNN_aarch64_allocate_dynrelocs () |
a06ea964 NC |
108 | |
109 | For each global with positive reference count we allocate a double | |
110 | GOT slot. For a traditional TLS symbol we allocate space for two | |
111 | relocation entries on the GOT, for a TLS descriptor symbol we | |
112 | allocate space for one relocation on the slot. Record the GOT offset | |
113 | for this symbol. | |
114 | ||
cec5225b | 115 | elfNN_aarch64_size_dynamic_sections () |
a06ea964 NC |
116 | |
117 | Iterate all input BFDS, look for in the local symbol data structure | |
118 | constructed earlier for local TLS symbols and allocate them double | |
119 | GOT slots along with space for a single GOT relocation. Update the | |
120 | local symbol structure to record the GOT offset allocated. | |
121 | ||
cec5225b | 122 | elfNN_aarch64_relocate_section () |
a06ea964 | 123 | |
cec5225b | 124 | Calls elfNN_aarch64_final_link_relocate () |
a06ea964 NC |
125 | |
126 | Emit the relevant TLS relocations against the GOT for each TLS | |
127 | symbol. For local TLS symbols emit the GOT offset directly. The GOT | |
128 | relocations are emitted once the first time a TLS symbol is | |
129 | encountered. The implementation uses the LSB of the GOT offset to | |
130 | flag that the relevant GOT relocations for a symbol have been | |
131 | emitted. All of the TLS code that uses the GOT offset needs to take | |
132 | care to mask out this flag bit before using the offset. | |
133 | ||
cec5225b | 134 | elfNN_aarch64_final_link_relocate () |
a06ea964 NC |
135 | |
136 | Fixup the R_AARCH64_TLSGD_{ADR_PREL21, ADD_LO12_NC} relocations. */ | |
137 | ||
138 | #include "sysdep.h" | |
139 | #include "bfd.h" | |
140 | #include "libiberty.h" | |
141 | #include "libbfd.h" | |
a06ea964 NC |
142 | #include "elf-bfd.h" |
143 | #include "bfdlink.h" | |
1419bbe5 | 144 | #include "objalloc.h" |
a06ea964 | 145 | #include "elf/aarch64.h" |
caed7120 | 146 | #include "elfxx-aarch64.h" |
a8bfaadb | 147 | #include "cpu-aarch64.h" |
a06ea964 | 148 | |
cec5225b YZ |
149 | #define ARCH_SIZE NN |
150 | ||
151 | #if ARCH_SIZE == 64 | |
152 | #define AARCH64_R(NAME) R_AARCH64_ ## NAME | |
153 | #define AARCH64_R_STR(NAME) "R_AARCH64_" #NAME | |
a6bb11b2 YZ |
154 | #define HOWTO64(...) HOWTO (__VA_ARGS__) |
155 | #define HOWTO32(...) EMPTY_HOWTO (0) | |
cec5225b | 156 | #define LOG_FILE_ALIGN 3 |
f955cccf | 157 | #define BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC BFD_RELOC_AARCH64_TLSDESC_LD64_LO12 |
cec5225b YZ |
158 | #endif |
159 | ||
160 | #if ARCH_SIZE == 32 | |
161 | #define AARCH64_R(NAME) R_AARCH64_P32_ ## NAME | |
162 | #define AARCH64_R_STR(NAME) "R_AARCH64_P32_" #NAME | |
a6bb11b2 YZ |
163 | #define HOWTO64(...) EMPTY_HOWTO (0) |
164 | #define HOWTO32(...) HOWTO (__VA_ARGS__) | |
cec5225b | 165 | #define LOG_FILE_ALIGN 2 |
07d6d2b8 AM |
166 | #define BFD_RELOC_AARCH64_TLSDESC_LD32_LO12 BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC |
167 | #define R_AARCH64_P32_TLSDESC_ADD_LO12 R_AARCH64_P32_TLSDESC_ADD_LO12_NC | |
cec5225b YZ |
168 | #endif |
169 | ||
a6bb11b2 | 170 | #define IS_AARCH64_TLS_RELOC(R_TYPE) \ |
4c0a9a6f JW |
171 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \ |
172 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \ | |
3c12b054 | 173 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \ |
3e8286c0 | 174 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \ |
1aa66fb1 | 175 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \ |
a6bb11b2 | 176 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \ |
a6bb11b2 | 177 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC \ |
4c0a9a6f | 178 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC \ |
a6bb11b2 | 179 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \ |
4c0a9a6f JW |
180 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC \ |
181 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1 \ | |
6ffe9a1b | 182 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12 \ |
40fbed84 | 183 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12 \ |
753999c1 | 184 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC \ |
73f925cc | 185 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \ |
f69e4920 | 186 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \ |
77a69ff8 | 187 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 \ |
07c9aa07 JW |
188 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12 \ |
189 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC \ | |
190 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12 \ | |
191 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC \ | |
192 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12 \ | |
193 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC \ | |
194 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12 \ | |
195 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC \ | |
6ffe9a1b JW |
196 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0 \ |
197 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC \ | |
198 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1 \ | |
199 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC \ | |
200 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2 \ | |
a6bb11b2 | 201 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 \ |
4c0a9a6f | 202 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12 \ |
a6bb11b2 | 203 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC \ |
e04ef022 RL |
204 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12 \ |
205 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC \ | |
206 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12 \ | |
207 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC \ | |
208 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12 \ | |
209 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC \ | |
210 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12 \ | |
211 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC \ | |
a6bb11b2 YZ |
212 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0 \ |
213 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC \ | |
4c0a9a6f JW |
214 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 \ |
215 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC \ | |
216 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 \ | |
a6bb11b2 YZ |
217 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPMOD \ |
218 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPREL \ | |
219 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_TPREL \ | |
a06ea964 NC |
220 | || IS_AARCH64_TLSDESC_RELOC ((R_TYPE))) |
221 | ||
9331eea1 | 222 | #define IS_AARCH64_TLS_RELAX_RELOC(R_TYPE) \ |
f955cccf NC |
223 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \ |
224 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12 \ | |
4af68b9c JW |
225 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \ |
226 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \ | |
227 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \ | |
228 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \ | |
229 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC \ | |
0484b454 RL |
230 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \ |
231 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \ | |
232 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1 \ | |
233 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \ | |
4af68b9c | 234 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \ |
9331eea1 JW |
235 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \ |
236 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \ | |
ac734732 RL |
237 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \ |
238 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \ | |
9331eea1 JW |
239 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \ |
240 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \ | |
241 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC \ | |
259364ad JW |
242 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \ |
243 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \ | |
4af68b9c | 244 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21) |
9331eea1 | 245 | |
a6bb11b2 | 246 | #define IS_AARCH64_TLSDESC_RELOC(R_TYPE) \ |
4c0a9a6f JW |
247 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC \ |
248 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \ | |
f955cccf | 249 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12 \ |
a6bb11b2 | 250 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \ |
389b8029 | 251 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \ |
4c0a9a6f | 252 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \ |
a6bb11b2 | 253 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC \ |
f955cccf | 254 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD64_LO12 \ |
a6bb11b2 | 255 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \ |
4c0a9a6f JW |
256 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \ |
257 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \ | |
258 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1) | |
a06ea964 | 259 | |
6353d82b | 260 | #define ELIMINATE_COPY_RELOCS 1 |
a06ea964 | 261 | |
a06ea964 | 262 | /* Return size of a relocation entry. HTAB is the bfd's |
cec5225b YZ |
263 | elf_aarch64_link_hash_entry. */ |
264 | #define RELOC_SIZE(HTAB) (sizeof (ElfNN_External_Rela)) | |
a06ea964 | 265 | |
cec5225b | 266 | /* GOT Entry size - 8 bytes in ELF64 and 4 bytes in ELF32. */ |
07d6d2b8 AM |
267 | #define GOT_ENTRY_SIZE (ARCH_SIZE / 8) |
268 | #define PLT_ENTRY_SIZE (32) | |
269 | #define PLT_SMALL_ENTRY_SIZE (16) | |
270 | #define PLT_TLSDESC_ENTRY_SIZE (32) | |
37c18eed | 271 | /* PLT sizes with BTI insn. */ |
68bb0359 | 272 | #define PLT_BTI_SMALL_ENTRY_SIZE (24) |
1dbade74 | 273 | /* PLT sizes with PAC insn. */ |
68bb0359 | 274 | #define PLT_PAC_SMALL_ENTRY_SIZE (24) |
1dbade74 | 275 | /* PLT sizes with BTI and PAC insn. */ |
1dbade74 | 276 | #define PLT_BTI_PAC_SMALL_ENTRY_SIZE (24) |
a06ea964 | 277 | |
2d0ca824 | 278 | /* Encoding of the nop instruction. */ |
a06ea964 NC |
279 | #define INSN_NOP 0xd503201f |
280 | ||
281 | #define aarch64_compute_jump_table_size(htab) \ | |
282 | (((htab)->root.srelplt == NULL) ? 0 \ | |
283 | : (htab)->root.srelplt->reloc_count * GOT_ENTRY_SIZE) | |
284 | ||
285 | /* The first entry in a procedure linkage table looks like this | |
286 | if the distance between the PLTGOT and the PLT is < 4GB use | |
287 | these PLT entries. Note that the dynamic linker gets &PLTGOT[2] | |
288 | in x16 and needs to work out PLTGOT[1] by using an address of | |
cec5225b YZ |
289 | [x16,#-GOT_ENTRY_SIZE]. */ |
290 | static const bfd_byte elfNN_aarch64_small_plt0_entry[PLT_ENTRY_SIZE] = | |
a06ea964 NC |
291 | { |
292 | 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */ | |
293 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */ | |
caed7120 | 294 | #if ARCH_SIZE == 64 |
a06ea964 NC |
295 | 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */ |
296 | 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */ | |
caed7120 YZ |
297 | #else |
298 | 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */ | |
299 | 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */ | |
300 | #endif | |
a06ea964 NC |
301 | 0x20, 0x02, 0x1f, 0xd6, /* br x17 */ |
302 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
303 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
304 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
305 | }; | |
306 | ||
68bb0359 | 307 | static const bfd_byte elfNN_aarch64_small_plt0_bti_entry[PLT_ENTRY_SIZE] = |
37c18eed SD |
308 | { |
309 | 0x5f, 0x24, 0x03, 0xd5, /* bti c. */ | |
310 | 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */ | |
311 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */ | |
312 | #if ARCH_SIZE == 64 | |
313 | 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */ | |
314 | 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */ | |
315 | #else | |
316 | 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */ | |
317 | 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */ | |
318 | #endif | |
319 | 0x20, 0x02, 0x1f, 0xd6, /* br x17 */ | |
320 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
321 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
1dbade74 SD |
322 | }; |
323 | ||
a06ea964 NC |
324 | /* Per function entry in a procedure linkage table looks like this |
325 | if the distance between the PLTGOT and the PLT is < 4GB use | |
37c18eed | 326 | these PLT entries. Use BTI versions of the PLTs when enabled. */ |
cec5225b | 327 | static const bfd_byte elfNN_aarch64_small_plt_entry[PLT_SMALL_ENTRY_SIZE] = |
a06ea964 NC |
328 | { |
329 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
caed7120 | 330 | #if ARCH_SIZE == 64 |
a06ea964 NC |
331 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ |
332 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
caed7120 YZ |
333 | #else |
334 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
335 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
336 | #endif | |
a06ea964 NC |
337 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ |
338 | }; | |
339 | ||
37c18eed SD |
340 | static const bfd_byte |
341 | elfNN_aarch64_small_plt_bti_entry[PLT_BTI_SMALL_ENTRY_SIZE] = | |
342 | { | |
343 | 0x5f, 0x24, 0x03, 0xd5, /* bti c. */ | |
344 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
345 | #if ARCH_SIZE == 64 | |
346 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ | |
347 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
348 | #else | |
349 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
350 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
351 | #endif | |
352 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ | |
68bb0359 | 353 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ |
37c18eed SD |
354 | }; |
355 | ||
1dbade74 SD |
356 | static const bfd_byte |
357 | elfNN_aarch64_small_plt_pac_entry[PLT_PAC_SMALL_ENTRY_SIZE] = | |
358 | { | |
359 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
360 | #if ARCH_SIZE == 64 | |
361 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ | |
362 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
363 | #else | |
364 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
365 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
366 | #endif | |
367 | 0x9f, 0x21, 0x03, 0xd5, /* autia1716 */ | |
368 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ | |
68bb0359 | 369 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ |
1dbade74 SD |
370 | }; |
371 | ||
372 | static const bfd_byte | |
373 | elfNN_aarch64_small_plt_bti_pac_entry[PLT_BTI_PAC_SMALL_ENTRY_SIZE] = | |
374 | { | |
375 | 0x5f, 0x24, 0x03, 0xd5, /* bti c. */ | |
376 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
377 | #if ARCH_SIZE == 64 | |
378 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ | |
379 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
380 | #else | |
381 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
382 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
383 | #endif | |
384 | 0x9f, 0x21, 0x03, 0xd5, /* autia1716 */ | |
385 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ | |
386 | }; | |
387 | ||
a06ea964 | 388 | static const bfd_byte |
cec5225b | 389 | elfNN_aarch64_tlsdesc_small_plt_entry[PLT_TLSDESC_ENTRY_SIZE] = |
a06ea964 NC |
390 | { |
391 | 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */ | |
392 | 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */ | |
393 | 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */ | |
caed7120 YZ |
394 | #if ARCH_SIZE == 64 |
395 | 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */ | |
a06ea964 | 396 | 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */ |
caed7120 YZ |
397 | #else |
398 | 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */ | |
399 | 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */ | |
400 | #endif | |
401 | 0x40, 0x00, 0x1f, 0xd6, /* br x2 */ | |
a06ea964 NC |
402 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ |
403 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
404 | }; | |
405 | ||
37c18eed | 406 | static const bfd_byte |
68bb0359 | 407 | elfNN_aarch64_tlsdesc_small_plt_bti_entry[PLT_TLSDESC_ENTRY_SIZE] = |
37c18eed SD |
408 | { |
409 | 0x5f, 0x24, 0x03, 0xd5, /* bti c. */ | |
410 | 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */ | |
411 | 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */ | |
412 | 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */ | |
413 | #if ARCH_SIZE == 64 | |
414 | 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */ | |
415 | 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */ | |
416 | #else | |
417 | 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */ | |
418 | 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */ | |
419 | #endif | |
420 | 0x40, 0x00, 0x1f, 0xd6, /* br x2 */ | |
421 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
37c18eed SD |
422 | }; |
423 | ||
07d6d2b8 AM |
424 | #define elf_info_to_howto elfNN_aarch64_info_to_howto |
425 | #define elf_info_to_howto_rel elfNN_aarch64_info_to_howto | |
a06ea964 NC |
426 | |
427 | #define AARCH64_ELF_ABI_VERSION 0 | |
a06ea964 NC |
428 | |
429 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ | |
430 | #define ALL_ONES (~ (bfd_vma) 0) | |
431 | ||
a6bb11b2 YZ |
432 | /* Indexed by the bfd interal reloc enumerators. |
433 | Therefore, the table needs to be synced with BFD_RELOC_AARCH64_* | |
434 | in reloc.c. */ | |
a06ea964 | 435 | |
a6bb11b2 | 436 | static reloc_howto_type elfNN_aarch64_howto_table[] = |
a06ea964 | 437 | { |
a6bb11b2 | 438 | EMPTY_HOWTO (0), |
a06ea964 | 439 | |
a6bb11b2 | 440 | /* Basic data relocations. */ |
a06ea964 | 441 | |
b7f28d87 JW |
442 | /* Deprecated, but retained for backwards compatibility. */ |
443 | HOWTO64 (R_AARCH64_NULL, /* type */ | |
a06ea964 | 444 | 0, /* rightshift */ |
6346d5ca | 445 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a6bb11b2 | 446 | 0, /* bitsize */ |
a06ea964 NC |
447 | FALSE, /* pc_relative */ |
448 | 0, /* bitpos */ | |
449 | complain_overflow_dont, /* complain_on_overflow */ | |
450 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 451 | "R_AARCH64_NULL", /* name */ |
a06ea964 NC |
452 | FALSE, /* partial_inplace */ |
453 | 0, /* src_mask */ | |
a6bb11b2 | 454 | 0, /* dst_mask */ |
a06ea964 | 455 | FALSE), /* pcrel_offset */ |
a6bb11b2 | 456 | HOWTO (R_AARCH64_NONE, /* type */ |
a06ea964 | 457 | 0, /* rightshift */ |
6346d5ca | 458 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a06ea964 NC |
459 | 0, /* bitsize */ |
460 | FALSE, /* pc_relative */ | |
461 | 0, /* bitpos */ | |
462 | complain_overflow_dont, /* complain_on_overflow */ | |
463 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 464 | "R_AARCH64_NONE", /* name */ |
a06ea964 NC |
465 | FALSE, /* partial_inplace */ |
466 | 0, /* src_mask */ | |
467 | 0, /* dst_mask */ | |
468 | FALSE), /* pcrel_offset */ | |
469 | ||
470 | /* .xword: (S+A) */ | |
a6bb11b2 | 471 | HOWTO64 (AARCH64_R (ABS64), /* type */ |
a06ea964 NC |
472 | 0, /* rightshift */ |
473 | 4, /* size (4 = long long) */ | |
474 | 64, /* bitsize */ | |
475 | FALSE, /* pc_relative */ | |
476 | 0, /* bitpos */ | |
477 | complain_overflow_unsigned, /* complain_on_overflow */ | |
478 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 479 | AARCH64_R_STR (ABS64), /* name */ |
a06ea964 NC |
480 | FALSE, /* partial_inplace */ |
481 | ALL_ONES, /* src_mask */ | |
482 | ALL_ONES, /* dst_mask */ | |
483 | FALSE), /* pcrel_offset */ | |
484 | ||
485 | /* .word: (S+A) */ | |
a6bb11b2 | 486 | HOWTO (AARCH64_R (ABS32), /* type */ |
a06ea964 NC |
487 | 0, /* rightshift */ |
488 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
489 | 32, /* bitsize */ | |
490 | FALSE, /* pc_relative */ | |
491 | 0, /* bitpos */ | |
492 | complain_overflow_unsigned, /* complain_on_overflow */ | |
493 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 494 | AARCH64_R_STR (ABS32), /* name */ |
a06ea964 NC |
495 | FALSE, /* partial_inplace */ |
496 | 0xffffffff, /* src_mask */ | |
497 | 0xffffffff, /* dst_mask */ | |
498 | FALSE), /* pcrel_offset */ | |
499 | ||
500 | /* .half: (S+A) */ | |
a6bb11b2 | 501 | HOWTO (AARCH64_R (ABS16), /* type */ |
a06ea964 NC |
502 | 0, /* rightshift */ |
503 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
504 | 16, /* bitsize */ | |
505 | FALSE, /* pc_relative */ | |
506 | 0, /* bitpos */ | |
507 | complain_overflow_unsigned, /* complain_on_overflow */ | |
508 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 509 | AARCH64_R_STR (ABS16), /* name */ |
a06ea964 NC |
510 | FALSE, /* partial_inplace */ |
511 | 0xffff, /* src_mask */ | |
512 | 0xffff, /* dst_mask */ | |
513 | FALSE), /* pcrel_offset */ | |
514 | ||
515 | /* .xword: (S+A-P) */ | |
a6bb11b2 | 516 | HOWTO64 (AARCH64_R (PREL64), /* type */ |
a06ea964 NC |
517 | 0, /* rightshift */ |
518 | 4, /* size (4 = long long) */ | |
519 | 64, /* bitsize */ | |
520 | TRUE, /* pc_relative */ | |
521 | 0, /* bitpos */ | |
522 | complain_overflow_signed, /* complain_on_overflow */ | |
523 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 524 | AARCH64_R_STR (PREL64), /* name */ |
a06ea964 NC |
525 | FALSE, /* partial_inplace */ |
526 | ALL_ONES, /* src_mask */ | |
527 | ALL_ONES, /* dst_mask */ | |
528 | TRUE), /* pcrel_offset */ | |
529 | ||
530 | /* .word: (S+A-P) */ | |
a6bb11b2 | 531 | HOWTO (AARCH64_R (PREL32), /* type */ |
a06ea964 NC |
532 | 0, /* rightshift */ |
533 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
534 | 32, /* bitsize */ | |
535 | TRUE, /* pc_relative */ | |
536 | 0, /* bitpos */ | |
537 | complain_overflow_signed, /* complain_on_overflow */ | |
538 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 539 | AARCH64_R_STR (PREL32), /* name */ |
a06ea964 NC |
540 | FALSE, /* partial_inplace */ |
541 | 0xffffffff, /* src_mask */ | |
542 | 0xffffffff, /* dst_mask */ | |
543 | TRUE), /* pcrel_offset */ | |
544 | ||
545 | /* .half: (S+A-P) */ | |
a6bb11b2 | 546 | HOWTO (AARCH64_R (PREL16), /* type */ |
a06ea964 NC |
547 | 0, /* rightshift */ |
548 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
549 | 16, /* bitsize */ | |
550 | TRUE, /* pc_relative */ | |
551 | 0, /* bitpos */ | |
552 | complain_overflow_signed, /* complain_on_overflow */ | |
553 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 554 | AARCH64_R_STR (PREL16), /* name */ |
a06ea964 NC |
555 | FALSE, /* partial_inplace */ |
556 | 0xffff, /* src_mask */ | |
557 | 0xffff, /* dst_mask */ | |
558 | TRUE), /* pcrel_offset */ | |
559 | ||
560 | /* Group relocations to create a 16, 32, 48 or 64 bit | |
561 | unsigned data or abs address inline. */ | |
562 | ||
563 | /* MOVZ: ((S+A) >> 0) & 0xffff */ | |
a6bb11b2 | 564 | HOWTO (AARCH64_R (MOVW_UABS_G0), /* type */ |
a06ea964 NC |
565 | 0, /* rightshift */ |
566 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
567 | 16, /* bitsize */ | |
568 | FALSE, /* pc_relative */ | |
569 | 0, /* bitpos */ | |
570 | complain_overflow_unsigned, /* complain_on_overflow */ | |
571 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 572 | AARCH64_R_STR (MOVW_UABS_G0), /* name */ |
a06ea964 NC |
573 | FALSE, /* partial_inplace */ |
574 | 0xffff, /* src_mask */ | |
575 | 0xffff, /* dst_mask */ | |
576 | FALSE), /* pcrel_offset */ | |
577 | ||
578 | /* MOVK: ((S+A) >> 0) & 0xffff [no overflow check] */ | |
a6bb11b2 | 579 | HOWTO (AARCH64_R (MOVW_UABS_G0_NC), /* type */ |
a06ea964 NC |
580 | 0, /* rightshift */ |
581 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
582 | 16, /* bitsize */ | |
583 | FALSE, /* pc_relative */ | |
584 | 0, /* bitpos */ | |
585 | complain_overflow_dont, /* complain_on_overflow */ | |
586 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 587 | AARCH64_R_STR (MOVW_UABS_G0_NC), /* name */ |
a06ea964 NC |
588 | FALSE, /* partial_inplace */ |
589 | 0xffff, /* src_mask */ | |
590 | 0xffff, /* dst_mask */ | |
591 | FALSE), /* pcrel_offset */ | |
592 | ||
593 | /* MOVZ: ((S+A) >> 16) & 0xffff */ | |
a6bb11b2 | 594 | HOWTO (AARCH64_R (MOVW_UABS_G1), /* type */ |
a06ea964 NC |
595 | 16, /* rightshift */ |
596 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
597 | 16, /* bitsize */ | |
598 | FALSE, /* pc_relative */ | |
599 | 0, /* bitpos */ | |
600 | complain_overflow_unsigned, /* complain_on_overflow */ | |
601 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 602 | AARCH64_R_STR (MOVW_UABS_G1), /* name */ |
a06ea964 NC |
603 | FALSE, /* partial_inplace */ |
604 | 0xffff, /* src_mask */ | |
605 | 0xffff, /* dst_mask */ | |
606 | FALSE), /* pcrel_offset */ | |
607 | ||
608 | /* MOVK: ((S+A) >> 16) & 0xffff [no overflow check] */ | |
a6bb11b2 | 609 | HOWTO64 (AARCH64_R (MOVW_UABS_G1_NC), /* type */ |
a06ea964 NC |
610 | 16, /* rightshift */ |
611 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
612 | 16, /* bitsize */ | |
613 | FALSE, /* pc_relative */ | |
614 | 0, /* bitpos */ | |
615 | complain_overflow_dont, /* complain_on_overflow */ | |
616 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 617 | AARCH64_R_STR (MOVW_UABS_G1_NC), /* name */ |
a06ea964 NC |
618 | FALSE, /* partial_inplace */ |
619 | 0xffff, /* src_mask */ | |
620 | 0xffff, /* dst_mask */ | |
621 | FALSE), /* pcrel_offset */ | |
622 | ||
623 | /* MOVZ: ((S+A) >> 32) & 0xffff */ | |
a6bb11b2 | 624 | HOWTO64 (AARCH64_R (MOVW_UABS_G2), /* type */ |
a06ea964 NC |
625 | 32, /* rightshift */ |
626 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
627 | 16, /* bitsize */ | |
628 | FALSE, /* pc_relative */ | |
629 | 0, /* bitpos */ | |
630 | complain_overflow_unsigned, /* complain_on_overflow */ | |
631 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 632 | AARCH64_R_STR (MOVW_UABS_G2), /* name */ |
a06ea964 NC |
633 | FALSE, /* partial_inplace */ |
634 | 0xffff, /* src_mask */ | |
635 | 0xffff, /* dst_mask */ | |
636 | FALSE), /* pcrel_offset */ | |
637 | ||
638 | /* MOVK: ((S+A) >> 32) & 0xffff [no overflow check] */ | |
a6bb11b2 | 639 | HOWTO64 (AARCH64_R (MOVW_UABS_G2_NC), /* type */ |
a06ea964 NC |
640 | 32, /* rightshift */ |
641 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
642 | 16, /* bitsize */ | |
643 | FALSE, /* pc_relative */ | |
644 | 0, /* bitpos */ | |
645 | complain_overflow_dont, /* complain_on_overflow */ | |
646 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 647 | AARCH64_R_STR (MOVW_UABS_G2_NC), /* name */ |
a06ea964 NC |
648 | FALSE, /* partial_inplace */ |
649 | 0xffff, /* src_mask */ | |
650 | 0xffff, /* dst_mask */ | |
651 | FALSE), /* pcrel_offset */ | |
652 | ||
653 | /* MOVZ: ((S+A) >> 48) & 0xffff */ | |
a6bb11b2 | 654 | HOWTO64 (AARCH64_R (MOVW_UABS_G3), /* type */ |
a06ea964 NC |
655 | 48, /* rightshift */ |
656 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
657 | 16, /* bitsize */ | |
658 | FALSE, /* pc_relative */ | |
659 | 0, /* bitpos */ | |
660 | complain_overflow_unsigned, /* complain_on_overflow */ | |
661 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 662 | AARCH64_R_STR (MOVW_UABS_G3), /* name */ |
a06ea964 NC |
663 | FALSE, /* partial_inplace */ |
664 | 0xffff, /* src_mask */ | |
665 | 0xffff, /* dst_mask */ | |
666 | FALSE), /* pcrel_offset */ | |
667 | ||
668 | /* Group relocations to create high part of a 16, 32, 48 or 64 bit | |
669 | signed data or abs address inline. Will change instruction | |
670 | to MOVN or MOVZ depending on sign of calculated value. */ | |
671 | ||
672 | /* MOV[ZN]: ((S+A) >> 0) & 0xffff */ | |
a6bb11b2 | 673 | HOWTO (AARCH64_R (MOVW_SABS_G0), /* type */ |
a06ea964 NC |
674 | 0, /* rightshift */ |
675 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c5e3a364 | 676 | 17, /* bitsize */ |
a06ea964 NC |
677 | FALSE, /* pc_relative */ |
678 | 0, /* bitpos */ | |
679 | complain_overflow_signed, /* complain_on_overflow */ | |
680 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 681 | AARCH64_R_STR (MOVW_SABS_G0), /* name */ |
a06ea964 NC |
682 | FALSE, /* partial_inplace */ |
683 | 0xffff, /* src_mask */ | |
684 | 0xffff, /* dst_mask */ | |
685 | FALSE), /* pcrel_offset */ | |
686 | ||
687 | /* MOV[ZN]: ((S+A) >> 16) & 0xffff */ | |
a6bb11b2 | 688 | HOWTO64 (AARCH64_R (MOVW_SABS_G1), /* type */ |
a06ea964 NC |
689 | 16, /* rightshift */ |
690 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c5e3a364 | 691 | 17, /* bitsize */ |
a06ea964 NC |
692 | FALSE, /* pc_relative */ |
693 | 0, /* bitpos */ | |
694 | complain_overflow_signed, /* complain_on_overflow */ | |
695 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 696 | AARCH64_R_STR (MOVW_SABS_G1), /* name */ |
a06ea964 NC |
697 | FALSE, /* partial_inplace */ |
698 | 0xffff, /* src_mask */ | |
699 | 0xffff, /* dst_mask */ | |
700 | FALSE), /* pcrel_offset */ | |
701 | ||
702 | /* MOV[ZN]: ((S+A) >> 32) & 0xffff */ | |
a6bb11b2 | 703 | HOWTO64 (AARCH64_R (MOVW_SABS_G2), /* type */ |
a06ea964 NC |
704 | 32, /* rightshift */ |
705 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c5e3a364 | 706 | 17, /* bitsize */ |
a06ea964 NC |
707 | FALSE, /* pc_relative */ |
708 | 0, /* bitpos */ | |
709 | complain_overflow_signed, /* complain_on_overflow */ | |
710 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 711 | AARCH64_R_STR (MOVW_SABS_G2), /* name */ |
a06ea964 NC |
712 | FALSE, /* partial_inplace */ |
713 | 0xffff, /* src_mask */ | |
714 | 0xffff, /* dst_mask */ | |
715 | FALSE), /* pcrel_offset */ | |
716 | ||
32247401 RL |
717 | /* Group relocations to create a 16, 32, 48 or 64 bit |
718 | PC relative address inline. */ | |
719 | ||
720 | /* MOV[NZ]: ((S+A-P) >> 0) & 0xffff */ | |
e30d1fa1 | 721 | HOWTO (AARCH64_R (MOVW_PREL_G0), /* type */ |
32247401 RL |
722 | 0, /* rightshift */ |
723 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
724 | 17, /* bitsize */ | |
725 | TRUE, /* pc_relative */ | |
726 | 0, /* bitpos */ | |
727 | complain_overflow_signed, /* complain_on_overflow */ | |
728 | bfd_elf_generic_reloc, /* special_function */ | |
729 | AARCH64_R_STR (MOVW_PREL_G0), /* name */ | |
730 | FALSE, /* partial_inplace */ | |
731 | 0xffff, /* src_mask */ | |
732 | 0xffff, /* dst_mask */ | |
733 | TRUE), /* pcrel_offset */ | |
734 | ||
735 | /* MOVK: ((S+A-P) >> 0) & 0xffff [no overflow check] */ | |
e30d1fa1 | 736 | HOWTO (AARCH64_R (MOVW_PREL_G0_NC), /* type */ |
32247401 RL |
737 | 0, /* rightshift */ |
738 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
739 | 16, /* bitsize */ | |
740 | TRUE, /* pc_relative */ | |
741 | 0, /* bitpos */ | |
742 | complain_overflow_dont, /* complain_on_overflow */ | |
743 | bfd_elf_generic_reloc, /* special_function */ | |
744 | AARCH64_R_STR (MOVW_PREL_G0_NC), /* name */ | |
745 | FALSE, /* partial_inplace */ | |
746 | 0xffff, /* src_mask */ | |
747 | 0xffff, /* dst_mask */ | |
748 | TRUE), /* pcrel_offset */ | |
749 | ||
750 | /* MOV[NZ]: ((S+A-P) >> 16) & 0xffff */ | |
e30d1fa1 | 751 | HOWTO (AARCH64_R (MOVW_PREL_G1), /* type */ |
32247401 RL |
752 | 16, /* rightshift */ |
753 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
754 | 17, /* bitsize */ | |
755 | TRUE, /* pc_relative */ | |
756 | 0, /* bitpos */ | |
757 | complain_overflow_signed, /* complain_on_overflow */ | |
758 | bfd_elf_generic_reloc, /* special_function */ | |
759 | AARCH64_R_STR (MOVW_PREL_G1), /* name */ | |
760 | FALSE, /* partial_inplace */ | |
761 | 0xffff, /* src_mask */ | |
762 | 0xffff, /* dst_mask */ | |
763 | TRUE), /* pcrel_offset */ | |
764 | ||
765 | /* MOVK: ((S+A-P) >> 16) & 0xffff [no overflow check] */ | |
766 | HOWTO64 (AARCH64_R (MOVW_PREL_G1_NC), /* type */ | |
767 | 16, /* rightshift */ | |
768 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
769 | 16, /* bitsize */ | |
770 | TRUE, /* pc_relative */ | |
771 | 0, /* bitpos */ | |
772 | complain_overflow_dont, /* complain_on_overflow */ | |
773 | bfd_elf_generic_reloc, /* special_function */ | |
774 | AARCH64_R_STR (MOVW_PREL_G1_NC), /* name */ | |
775 | FALSE, /* partial_inplace */ | |
776 | 0xffff, /* src_mask */ | |
777 | 0xffff, /* dst_mask */ | |
778 | TRUE), /* pcrel_offset */ | |
779 | ||
780 | /* MOV[NZ]: ((S+A-P) >> 32) & 0xffff */ | |
781 | HOWTO64 (AARCH64_R (MOVW_PREL_G2), /* type */ | |
782 | 32, /* rightshift */ | |
783 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
784 | 17, /* bitsize */ | |
785 | TRUE, /* pc_relative */ | |
786 | 0, /* bitpos */ | |
787 | complain_overflow_signed, /* complain_on_overflow */ | |
788 | bfd_elf_generic_reloc, /* special_function */ | |
789 | AARCH64_R_STR (MOVW_PREL_G2), /* name */ | |
790 | FALSE, /* partial_inplace */ | |
791 | 0xffff, /* src_mask */ | |
792 | 0xffff, /* dst_mask */ | |
793 | TRUE), /* pcrel_offset */ | |
794 | ||
795 | /* MOVK: ((S+A-P) >> 32) & 0xffff [no overflow check] */ | |
796 | HOWTO64 (AARCH64_R (MOVW_PREL_G2_NC), /* type */ | |
797 | 32, /* rightshift */ | |
798 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
799 | 16, /* bitsize */ | |
800 | TRUE, /* pc_relative */ | |
801 | 0, /* bitpos */ | |
802 | complain_overflow_dont, /* complain_on_overflow */ | |
803 | bfd_elf_generic_reloc, /* special_function */ | |
804 | AARCH64_R_STR (MOVW_PREL_G2_NC), /* name */ | |
805 | FALSE, /* partial_inplace */ | |
806 | 0xffff, /* src_mask */ | |
807 | 0xffff, /* dst_mask */ | |
808 | TRUE), /* pcrel_offset */ | |
809 | ||
810 | /* MOV[NZ]: ((S+A-P) >> 48) & 0xffff */ | |
811 | HOWTO64 (AARCH64_R (MOVW_PREL_G3), /* type */ | |
812 | 48, /* rightshift */ | |
813 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
814 | 16, /* bitsize */ | |
815 | TRUE, /* pc_relative */ | |
816 | 0, /* bitpos */ | |
817 | complain_overflow_dont, /* complain_on_overflow */ | |
818 | bfd_elf_generic_reloc, /* special_function */ | |
819 | AARCH64_R_STR (MOVW_PREL_G3), /* name */ | |
820 | FALSE, /* partial_inplace */ | |
821 | 0xffff, /* src_mask */ | |
822 | 0xffff, /* dst_mask */ | |
823 | TRUE), /* pcrel_offset */ | |
824 | ||
a06ea964 NC |
825 | /* Relocations to generate 19, 21 and 33 bit PC-relative load/store |
826 | addresses: PG(x) is (x & ~0xfff). */ | |
827 | ||
828 | /* LD-lit: ((S+A-P) >> 2) & 0x7ffff */ | |
a6bb11b2 | 829 | HOWTO (AARCH64_R (LD_PREL_LO19), /* type */ |
a06ea964 NC |
830 | 2, /* rightshift */ |
831 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
832 | 19, /* bitsize */ | |
833 | TRUE, /* pc_relative */ | |
834 | 0, /* bitpos */ | |
835 | complain_overflow_signed, /* complain_on_overflow */ | |
836 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 837 | AARCH64_R_STR (LD_PREL_LO19), /* name */ |
a06ea964 NC |
838 | FALSE, /* partial_inplace */ |
839 | 0x7ffff, /* src_mask */ | |
840 | 0x7ffff, /* dst_mask */ | |
841 | TRUE), /* pcrel_offset */ | |
842 | ||
843 | /* ADR: (S+A-P) & 0x1fffff */ | |
a6bb11b2 | 844 | HOWTO (AARCH64_R (ADR_PREL_LO21), /* type */ |
a06ea964 NC |
845 | 0, /* rightshift */ |
846 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
847 | 21, /* bitsize */ | |
848 | TRUE, /* pc_relative */ | |
849 | 0, /* bitpos */ | |
850 | complain_overflow_signed, /* complain_on_overflow */ | |
851 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 852 | AARCH64_R_STR (ADR_PREL_LO21), /* name */ |
a06ea964 NC |
853 | FALSE, /* partial_inplace */ |
854 | 0x1fffff, /* src_mask */ | |
855 | 0x1fffff, /* dst_mask */ | |
856 | TRUE), /* pcrel_offset */ | |
857 | ||
858 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
a6bb11b2 | 859 | HOWTO (AARCH64_R (ADR_PREL_PG_HI21), /* type */ |
a06ea964 NC |
860 | 12, /* rightshift */ |
861 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
862 | 21, /* bitsize */ | |
863 | TRUE, /* pc_relative */ | |
864 | 0, /* bitpos */ | |
865 | complain_overflow_signed, /* complain_on_overflow */ | |
866 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 867 | AARCH64_R_STR (ADR_PREL_PG_HI21), /* name */ |
a06ea964 NC |
868 | FALSE, /* partial_inplace */ |
869 | 0x1fffff, /* src_mask */ | |
870 | 0x1fffff, /* dst_mask */ | |
871 | TRUE), /* pcrel_offset */ | |
872 | ||
873 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff [no overflow check] */ | |
a6bb11b2 | 874 | HOWTO64 (AARCH64_R (ADR_PREL_PG_HI21_NC), /* type */ |
a06ea964 NC |
875 | 12, /* rightshift */ |
876 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
877 | 21, /* bitsize */ | |
878 | TRUE, /* pc_relative */ | |
879 | 0, /* bitpos */ | |
880 | complain_overflow_dont, /* complain_on_overflow */ | |
881 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 882 | AARCH64_R_STR (ADR_PREL_PG_HI21_NC), /* name */ |
a06ea964 NC |
883 | FALSE, /* partial_inplace */ |
884 | 0x1fffff, /* src_mask */ | |
885 | 0x1fffff, /* dst_mask */ | |
886 | TRUE), /* pcrel_offset */ | |
887 | ||
888 | /* ADD: (S+A) & 0xfff [no overflow check] */ | |
a6bb11b2 | 889 | HOWTO (AARCH64_R (ADD_ABS_LO12_NC), /* type */ |
a06ea964 NC |
890 | 0, /* rightshift */ |
891 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
892 | 12, /* bitsize */ | |
893 | FALSE, /* pc_relative */ | |
894 | 10, /* bitpos */ | |
895 | complain_overflow_dont, /* complain_on_overflow */ | |
896 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 897 | AARCH64_R_STR (ADD_ABS_LO12_NC), /* name */ |
a06ea964 NC |
898 | FALSE, /* partial_inplace */ |
899 | 0x3ffc00, /* src_mask */ | |
900 | 0x3ffc00, /* dst_mask */ | |
901 | FALSE), /* pcrel_offset */ | |
902 | ||
903 | /* LD/ST8: (S+A) & 0xfff */ | |
a6bb11b2 | 904 | HOWTO (AARCH64_R (LDST8_ABS_LO12_NC), /* type */ |
a06ea964 NC |
905 | 0, /* rightshift */ |
906 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
907 | 12, /* bitsize */ | |
908 | FALSE, /* pc_relative */ | |
909 | 0, /* bitpos */ | |
910 | complain_overflow_dont, /* complain_on_overflow */ | |
911 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 912 | AARCH64_R_STR (LDST8_ABS_LO12_NC), /* name */ |
a06ea964 NC |
913 | FALSE, /* partial_inplace */ |
914 | 0xfff, /* src_mask */ | |
915 | 0xfff, /* dst_mask */ | |
916 | FALSE), /* pcrel_offset */ | |
917 | ||
918 | /* Relocations for control-flow instructions. */ | |
919 | ||
920 | /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */ | |
a6bb11b2 | 921 | HOWTO (AARCH64_R (TSTBR14), /* type */ |
a06ea964 NC |
922 | 2, /* rightshift */ |
923 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
924 | 14, /* bitsize */ | |
925 | TRUE, /* pc_relative */ | |
926 | 0, /* bitpos */ | |
927 | complain_overflow_signed, /* complain_on_overflow */ | |
928 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 929 | AARCH64_R_STR (TSTBR14), /* name */ |
a06ea964 NC |
930 | FALSE, /* partial_inplace */ |
931 | 0x3fff, /* src_mask */ | |
932 | 0x3fff, /* dst_mask */ | |
933 | TRUE), /* pcrel_offset */ | |
934 | ||
935 | /* B.cond: ((S+A-P) >> 2) & 0x7ffff */ | |
a6bb11b2 | 936 | HOWTO (AARCH64_R (CONDBR19), /* type */ |
a06ea964 NC |
937 | 2, /* rightshift */ |
938 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
939 | 19, /* bitsize */ | |
940 | TRUE, /* pc_relative */ | |
941 | 0, /* bitpos */ | |
942 | complain_overflow_signed, /* complain_on_overflow */ | |
943 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 944 | AARCH64_R_STR (CONDBR19), /* name */ |
a06ea964 NC |
945 | FALSE, /* partial_inplace */ |
946 | 0x7ffff, /* src_mask */ | |
947 | 0x7ffff, /* dst_mask */ | |
948 | TRUE), /* pcrel_offset */ | |
949 | ||
a06ea964 | 950 | /* B: ((S+A-P) >> 2) & 0x3ffffff */ |
a6bb11b2 | 951 | HOWTO (AARCH64_R (JUMP26), /* type */ |
a06ea964 NC |
952 | 2, /* rightshift */ |
953 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
954 | 26, /* bitsize */ | |
955 | TRUE, /* pc_relative */ | |
956 | 0, /* bitpos */ | |
957 | complain_overflow_signed, /* complain_on_overflow */ | |
958 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 959 | AARCH64_R_STR (JUMP26), /* name */ |
a06ea964 NC |
960 | FALSE, /* partial_inplace */ |
961 | 0x3ffffff, /* src_mask */ | |
962 | 0x3ffffff, /* dst_mask */ | |
963 | TRUE), /* pcrel_offset */ | |
964 | ||
965 | /* BL: ((S+A-P) >> 2) & 0x3ffffff */ | |
a6bb11b2 | 966 | HOWTO (AARCH64_R (CALL26), /* type */ |
a06ea964 NC |
967 | 2, /* rightshift */ |
968 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
969 | 26, /* bitsize */ | |
970 | TRUE, /* pc_relative */ | |
971 | 0, /* bitpos */ | |
972 | complain_overflow_signed, /* complain_on_overflow */ | |
973 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 974 | AARCH64_R_STR (CALL26), /* name */ |
a06ea964 NC |
975 | FALSE, /* partial_inplace */ |
976 | 0x3ffffff, /* src_mask */ | |
977 | 0x3ffffff, /* dst_mask */ | |
978 | TRUE), /* pcrel_offset */ | |
979 | ||
980 | /* LD/ST16: (S+A) & 0xffe */ | |
a6bb11b2 | 981 | HOWTO (AARCH64_R (LDST16_ABS_LO12_NC), /* type */ |
a06ea964 NC |
982 | 1, /* rightshift */ |
983 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
984 | 12, /* bitsize */ | |
985 | FALSE, /* pc_relative */ | |
986 | 0, /* bitpos */ | |
987 | complain_overflow_dont, /* complain_on_overflow */ | |
988 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 989 | AARCH64_R_STR (LDST16_ABS_LO12_NC), /* name */ |
a06ea964 NC |
990 | FALSE, /* partial_inplace */ |
991 | 0xffe, /* src_mask */ | |
992 | 0xffe, /* dst_mask */ | |
993 | FALSE), /* pcrel_offset */ | |
994 | ||
995 | /* LD/ST32: (S+A) & 0xffc */ | |
a6bb11b2 | 996 | HOWTO (AARCH64_R (LDST32_ABS_LO12_NC), /* type */ |
a06ea964 NC |
997 | 2, /* rightshift */ |
998 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
999 | 12, /* bitsize */ | |
1000 | FALSE, /* pc_relative */ | |
1001 | 0, /* bitpos */ | |
1002 | complain_overflow_dont, /* complain_on_overflow */ | |
1003 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1004 | AARCH64_R_STR (LDST32_ABS_LO12_NC), /* name */ |
a06ea964 NC |
1005 | FALSE, /* partial_inplace */ |
1006 | 0xffc, /* src_mask */ | |
1007 | 0xffc, /* dst_mask */ | |
1008 | FALSE), /* pcrel_offset */ | |
1009 | ||
1010 | /* LD/ST64: (S+A) & 0xff8 */ | |
a6bb11b2 | 1011 | HOWTO (AARCH64_R (LDST64_ABS_LO12_NC), /* type */ |
a06ea964 NC |
1012 | 3, /* rightshift */ |
1013 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1014 | 12, /* bitsize */ | |
1015 | FALSE, /* pc_relative */ | |
1016 | 0, /* bitpos */ | |
1017 | complain_overflow_dont, /* complain_on_overflow */ | |
1018 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1019 | AARCH64_R_STR (LDST64_ABS_LO12_NC), /* name */ |
a06ea964 NC |
1020 | FALSE, /* partial_inplace */ |
1021 | 0xff8, /* src_mask */ | |
1022 | 0xff8, /* dst_mask */ | |
1023 | FALSE), /* pcrel_offset */ | |
1024 | ||
a06ea964 | 1025 | /* LD/ST128: (S+A) & 0xff0 */ |
a6bb11b2 | 1026 | HOWTO (AARCH64_R (LDST128_ABS_LO12_NC), /* type */ |
a06ea964 NC |
1027 | 4, /* rightshift */ |
1028 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1029 | 12, /* bitsize */ | |
1030 | FALSE, /* pc_relative */ | |
1031 | 0, /* bitpos */ | |
1032 | complain_overflow_dont, /* complain_on_overflow */ | |
1033 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1034 | AARCH64_R_STR (LDST128_ABS_LO12_NC), /* name */ |
a06ea964 NC |
1035 | FALSE, /* partial_inplace */ |
1036 | 0xff0, /* src_mask */ | |
1037 | 0xff0, /* dst_mask */ | |
1038 | FALSE), /* pcrel_offset */ | |
1039 | ||
f41aef5f RE |
1040 | /* Set a load-literal immediate field to bits |
1041 | 0x1FFFFC of G(S)-P */ | |
a6bb11b2 | 1042 | HOWTO (AARCH64_R (GOT_LD_PREL19), /* type */ |
f41aef5f RE |
1043 | 2, /* rightshift */ |
1044 | 2, /* size (0 = byte,1 = short,2 = long) */ | |
1045 | 19, /* bitsize */ | |
1046 | TRUE, /* pc_relative */ | |
1047 | 0, /* bitpos */ | |
1048 | complain_overflow_signed, /* complain_on_overflow */ | |
1049 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1050 | AARCH64_R_STR (GOT_LD_PREL19), /* name */ |
f41aef5f RE |
1051 | FALSE, /* partial_inplace */ |
1052 | 0xffffe0, /* src_mask */ | |
1053 | 0xffffe0, /* dst_mask */ | |
1054 | TRUE), /* pcrel_offset */ | |
1055 | ||
a06ea964 NC |
1056 | /* Get to the page for the GOT entry for the symbol |
1057 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 1058 | HOWTO (AARCH64_R (ADR_GOT_PAGE), /* type */ |
a06ea964 NC |
1059 | 12, /* rightshift */ |
1060 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1061 | 21, /* bitsize */ | |
1062 | TRUE, /* pc_relative */ | |
1063 | 0, /* bitpos */ | |
1064 | complain_overflow_dont, /* complain_on_overflow */ | |
1065 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1066 | AARCH64_R_STR (ADR_GOT_PAGE), /* name */ |
a06ea964 NC |
1067 | FALSE, /* partial_inplace */ |
1068 | 0x1fffff, /* src_mask */ | |
1069 | 0x1fffff, /* dst_mask */ | |
1070 | TRUE), /* pcrel_offset */ | |
1071 | ||
a6bb11b2 YZ |
1072 | /* LD64: GOT offset G(S) & 0xff8 */ |
1073 | HOWTO64 (AARCH64_R (LD64_GOT_LO12_NC), /* type */ | |
a06ea964 NC |
1074 | 3, /* rightshift */ |
1075 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1076 | 12, /* bitsize */ | |
1077 | FALSE, /* pc_relative */ | |
1078 | 0, /* bitpos */ | |
1079 | complain_overflow_dont, /* complain_on_overflow */ | |
1080 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1081 | AARCH64_R_STR (LD64_GOT_LO12_NC), /* name */ |
a06ea964 NC |
1082 | FALSE, /* partial_inplace */ |
1083 | 0xff8, /* src_mask */ | |
1084 | 0xff8, /* dst_mask */ | |
a6bb11b2 | 1085 | FALSE), /* pcrel_offset */ |
a06ea964 | 1086 | |
a6bb11b2 YZ |
1087 | /* LD32: GOT offset G(S) & 0xffc */ |
1088 | HOWTO32 (AARCH64_R (LD32_GOT_LO12_NC), /* type */ | |
1089 | 2, /* rightshift */ | |
1090 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1091 | 12, /* bitsize */ | |
1092 | FALSE, /* pc_relative */ | |
1093 | 0, /* bitpos */ | |
1094 | complain_overflow_dont, /* complain_on_overflow */ | |
1095 | bfd_elf_generic_reloc, /* special_function */ | |
1096 | AARCH64_R_STR (LD32_GOT_LO12_NC), /* name */ | |
1097 | FALSE, /* partial_inplace */ | |
1098 | 0xffc, /* src_mask */ | |
1099 | 0xffc, /* dst_mask */ | |
1100 | FALSE), /* pcrel_offset */ | |
a06ea964 | 1101 | |
ca632371 RL |
1102 | /* Lower 16 bits of GOT offset for the symbol. */ |
1103 | HOWTO64 (AARCH64_R (MOVW_GOTOFF_G0_NC), /* type */ | |
1104 | 0, /* rightshift */ | |
1105 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1106 | 16, /* bitsize */ | |
1107 | FALSE, /* pc_relative */ | |
1108 | 0, /* bitpos */ | |
1109 | complain_overflow_dont, /* complain_on_overflow */ | |
1110 | bfd_elf_generic_reloc, /* special_function */ | |
1111 | AARCH64_R_STR (MOVW_GOTOFF_G0_NC), /* name */ | |
1112 | FALSE, /* partial_inplace */ | |
1113 | 0xffff, /* src_mask */ | |
1114 | 0xffff, /* dst_mask */ | |
1115 | FALSE), /* pcrel_offset */ | |
1116 | ||
654248e7 RL |
1117 | /* Higher 16 bits of GOT offset for the symbol. */ |
1118 | HOWTO64 (AARCH64_R (MOVW_GOTOFF_G1), /* type */ | |
1119 | 16, /* rightshift */ | |
1120 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1121 | 16, /* bitsize */ | |
1122 | FALSE, /* pc_relative */ | |
1123 | 0, /* bitpos */ | |
1124 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1125 | bfd_elf_generic_reloc, /* special_function */ | |
1126 | AARCH64_R_STR (MOVW_GOTOFF_G1), /* name */ | |
1127 | FALSE, /* partial_inplace */ | |
1128 | 0xffff, /* src_mask */ | |
1129 | 0xffff, /* dst_mask */ | |
1130 | FALSE), /* pcrel_offset */ | |
1131 | ||
87f5fbcc RL |
1132 | /* LD64: GOT offset for the symbol. */ |
1133 | HOWTO64 (AARCH64_R (LD64_GOTOFF_LO15), /* type */ | |
1134 | 3, /* rightshift */ | |
1135 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1136 | 12, /* bitsize */ | |
1137 | FALSE, /* pc_relative */ | |
1138 | 0, /* bitpos */ | |
1139 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1140 | bfd_elf_generic_reloc, /* special_function */ | |
1141 | AARCH64_R_STR (LD64_GOTOFF_LO15), /* name */ | |
1142 | FALSE, /* partial_inplace */ | |
1143 | 0x7ff8, /* src_mask */ | |
1144 | 0x7ff8, /* dst_mask */ | |
1145 | FALSE), /* pcrel_offset */ | |
1146 | ||
3d715ce4 JW |
1147 | /* LD32: GOT offset to the page address of GOT table. |
1148 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x5ffc. */ | |
1149 | HOWTO32 (AARCH64_R (LD32_GOTPAGE_LO14), /* type */ | |
1150 | 2, /* rightshift */ | |
1151 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1152 | 12, /* bitsize */ | |
1153 | FALSE, /* pc_relative */ | |
1154 | 0, /* bitpos */ | |
1155 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1156 | bfd_elf_generic_reloc, /* special_function */ | |
1157 | AARCH64_R_STR (LD32_GOTPAGE_LO14), /* name */ | |
1158 | FALSE, /* partial_inplace */ | |
1159 | 0x5ffc, /* src_mask */ | |
1160 | 0x5ffc, /* dst_mask */ | |
1161 | FALSE), /* pcrel_offset */ | |
1162 | ||
a921b5bd JW |
1163 | /* LD64: GOT offset to the page address of GOT table. |
1164 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */ | |
1165 | HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15), /* type */ | |
1166 | 3, /* rightshift */ | |
1167 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1168 | 12, /* bitsize */ | |
1169 | FALSE, /* pc_relative */ | |
1170 | 0, /* bitpos */ | |
1171 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1172 | bfd_elf_generic_reloc, /* special_function */ | |
1173 | AARCH64_R_STR (LD64_GOTPAGE_LO15), /* name */ | |
1174 | FALSE, /* partial_inplace */ | |
1175 | 0x7ff8, /* src_mask */ | |
1176 | 0x7ff8, /* dst_mask */ | |
1177 | FALSE), /* pcrel_offset */ | |
1178 | ||
a06ea964 NC |
1179 | /* Get to the page for the GOT entry for the symbol |
1180 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 1181 | HOWTO (AARCH64_R (TLSGD_ADR_PAGE21), /* type */ |
a06ea964 NC |
1182 | 12, /* rightshift */ |
1183 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1184 | 21, /* bitsize */ | |
1185 | TRUE, /* pc_relative */ | |
1186 | 0, /* bitpos */ | |
1187 | complain_overflow_dont, /* complain_on_overflow */ | |
1188 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1189 | AARCH64_R_STR (TLSGD_ADR_PAGE21), /* name */ |
a06ea964 NC |
1190 | FALSE, /* partial_inplace */ |
1191 | 0x1fffff, /* src_mask */ | |
1192 | 0x1fffff, /* dst_mask */ | |
1193 | TRUE), /* pcrel_offset */ | |
1194 | ||
3c12b054 MS |
1195 | HOWTO (AARCH64_R (TLSGD_ADR_PREL21), /* type */ |
1196 | 0, /* rightshift */ | |
1197 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1198 | 21, /* bitsize */ | |
1199 | TRUE, /* pc_relative */ | |
1200 | 0, /* bitpos */ | |
1201 | complain_overflow_dont, /* complain_on_overflow */ | |
1202 | bfd_elf_generic_reloc, /* special_function */ | |
1203 | AARCH64_R_STR (TLSGD_ADR_PREL21), /* name */ | |
1204 | FALSE, /* partial_inplace */ | |
1205 | 0x1fffff, /* src_mask */ | |
1206 | 0x1fffff, /* dst_mask */ | |
1207 | TRUE), /* pcrel_offset */ | |
1208 | ||
a06ea964 | 1209 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ |
a6bb11b2 | 1210 | HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC), /* type */ |
a06ea964 NC |
1211 | 0, /* rightshift */ |
1212 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1213 | 12, /* bitsize */ | |
1214 | FALSE, /* pc_relative */ | |
1215 | 0, /* bitpos */ | |
1216 | complain_overflow_dont, /* complain_on_overflow */ | |
1217 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1218 | AARCH64_R_STR (TLSGD_ADD_LO12_NC), /* name */ |
a06ea964 NC |
1219 | FALSE, /* partial_inplace */ |
1220 | 0xfff, /* src_mask */ | |
1221 | 0xfff, /* dst_mask */ | |
1222 | FALSE), /* pcrel_offset */ | |
1223 | ||
3e8286c0 RL |
1224 | /* Lower 16 bits of GOT offset to tls_index. */ |
1225 | HOWTO64 (AARCH64_R (TLSGD_MOVW_G0_NC), /* type */ | |
1226 | 0, /* rightshift */ | |
1227 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1228 | 16, /* bitsize */ | |
1229 | FALSE, /* pc_relative */ | |
1230 | 0, /* bitpos */ | |
1231 | complain_overflow_dont, /* complain_on_overflow */ | |
1232 | bfd_elf_generic_reloc, /* special_function */ | |
1233 | AARCH64_R_STR (TLSGD_MOVW_G0_NC), /* name */ | |
1234 | FALSE, /* partial_inplace */ | |
1235 | 0xffff, /* src_mask */ | |
1236 | 0xffff, /* dst_mask */ | |
1237 | FALSE), /* pcrel_offset */ | |
1238 | ||
1aa66fb1 RL |
1239 | /* Higher 16 bits of GOT offset to tls_index. */ |
1240 | HOWTO64 (AARCH64_R (TLSGD_MOVW_G1), /* type */ | |
1241 | 16, /* rightshift */ | |
1242 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1243 | 16, /* bitsize */ | |
1244 | FALSE, /* pc_relative */ | |
1245 | 0, /* bitpos */ | |
1246 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1247 | bfd_elf_generic_reloc, /* special_function */ | |
1248 | AARCH64_R_STR (TLSGD_MOVW_G1), /* name */ | |
1249 | FALSE, /* partial_inplace */ | |
1250 | 0xffff, /* src_mask */ | |
1251 | 0xffff, /* dst_mask */ | |
1252 | FALSE), /* pcrel_offset */ | |
1253 | ||
a6bb11b2 | 1254 | HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21), /* type */ |
a06ea964 NC |
1255 | 12, /* rightshift */ |
1256 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1257 | 21, /* bitsize */ | |
1258 | FALSE, /* pc_relative */ | |
1259 | 0, /* bitpos */ | |
1260 | complain_overflow_dont, /* complain_on_overflow */ | |
1261 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1262 | AARCH64_R_STR (TLSIE_ADR_GOTTPREL_PAGE21), /* name */ |
a06ea964 NC |
1263 | FALSE, /* partial_inplace */ |
1264 | 0x1fffff, /* src_mask */ | |
1265 | 0x1fffff, /* dst_mask */ | |
1266 | FALSE), /* pcrel_offset */ | |
1267 | ||
a6bb11b2 | 1268 | HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC), /* type */ |
a06ea964 NC |
1269 | 3, /* rightshift */ |
1270 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1271 | 12, /* bitsize */ | |
1272 | FALSE, /* pc_relative */ | |
1273 | 0, /* bitpos */ | |
1274 | complain_overflow_dont, /* complain_on_overflow */ | |
1275 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1276 | AARCH64_R_STR (TLSIE_LD64_GOTTPREL_LO12_NC), /* name */ |
a06ea964 NC |
1277 | FALSE, /* partial_inplace */ |
1278 | 0xff8, /* src_mask */ | |
1279 | 0xff8, /* dst_mask */ | |
1280 | FALSE), /* pcrel_offset */ | |
1281 | ||
a6bb11b2 YZ |
1282 | HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC), /* type */ |
1283 | 2, /* rightshift */ | |
1284 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1285 | 12, /* bitsize */ | |
1286 | FALSE, /* pc_relative */ | |
1287 | 0, /* bitpos */ | |
1288 | complain_overflow_dont, /* complain_on_overflow */ | |
1289 | bfd_elf_generic_reloc, /* special_function */ | |
1290 | AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC), /* name */ | |
1291 | FALSE, /* partial_inplace */ | |
1292 | 0xffc, /* src_mask */ | |
1293 | 0xffc, /* dst_mask */ | |
1294 | FALSE), /* pcrel_offset */ | |
1295 | ||
1296 | HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19), /* type */ | |
bb3f9ed8 | 1297 | 2, /* rightshift */ |
a06ea964 | 1298 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
043bf05a | 1299 | 19, /* bitsize */ |
a06ea964 NC |
1300 | FALSE, /* pc_relative */ |
1301 | 0, /* bitpos */ | |
1302 | complain_overflow_dont, /* complain_on_overflow */ | |
1303 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1304 | AARCH64_R_STR (TLSIE_LD_GOTTPREL_PREL19), /* name */ |
a06ea964 NC |
1305 | FALSE, /* partial_inplace */ |
1306 | 0x1ffffc, /* src_mask */ | |
1307 | 0x1ffffc, /* dst_mask */ | |
1308 | FALSE), /* pcrel_offset */ | |
1309 | ||
3b957e5b RL |
1310 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */ |
1311 | 0, /* rightshift */ | |
1312 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1313 | 16, /* bitsize */ | |
1314 | FALSE, /* pc_relative */ | |
1315 | 0, /* bitpos */ | |
1316 | complain_overflow_dont, /* complain_on_overflow */ | |
1317 | bfd_elf_generic_reloc, /* special_function */ | |
1318 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC), /* name */ | |
1319 | FALSE, /* partial_inplace */ | |
1320 | 0xffff, /* src_mask */ | |
1321 | 0xffff, /* dst_mask */ | |
1322 | FALSE), /* pcrel_offset */ | |
1323 | ||
1324 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1), /* type */ | |
1325 | 16, /* rightshift */ | |
1326 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1327 | 16, /* bitsize */ | |
1328 | FALSE, /* pc_relative */ | |
1329 | 0, /* bitpos */ | |
1330 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1331 | bfd_elf_generic_reloc, /* special_function */ | |
1332 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1), /* name */ | |
1333 | FALSE, /* partial_inplace */ | |
1334 | 0xffff, /* src_mask */ | |
1335 | 0xffff, /* dst_mask */ | |
1336 | FALSE), /* pcrel_offset */ | |
1337 | ||
49df5539 JW |
1338 | /* ADD: bit[23:12] of byte offset to module TLS base address. */ |
1339 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_HI12), /* type */ | |
1340 | 12, /* rightshift */ | |
1341 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1342 | 12, /* bitsize */ | |
1343 | FALSE, /* pc_relative */ | |
1344 | 0, /* bitpos */ | |
1345 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1346 | bfd_elf_generic_reloc, /* special_function */ | |
1347 | AARCH64_R_STR (TLSLD_ADD_DTPREL_HI12), /* name */ | |
1348 | FALSE, /* partial_inplace */ | |
1349 | 0xfff, /* src_mask */ | |
1350 | 0xfff, /* dst_mask */ | |
1351 | FALSE), /* pcrel_offset */ | |
1352 | ||
70151fb5 JW |
1353 | /* Unsigned 12 bit byte offset to module TLS base address. */ |
1354 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12), /* type */ | |
1355 | 0, /* rightshift */ | |
1356 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1357 | 12, /* bitsize */ | |
1358 | FALSE, /* pc_relative */ | |
1359 | 0, /* bitpos */ | |
1360 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1361 | bfd_elf_generic_reloc, /* special_function */ | |
1362 | AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12), /* name */ | |
1363 | FALSE, /* partial_inplace */ | |
1364 | 0xfff, /* src_mask */ | |
1365 | 0xfff, /* dst_mask */ | |
1366 | FALSE), /* pcrel_offset */ | |
13289c10 JW |
1367 | |
1368 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12. */ | |
1369 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12_NC), /* type */ | |
1370 | 0, /* rightshift */ | |
1371 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1372 | 12, /* bitsize */ | |
1373 | FALSE, /* pc_relative */ | |
1374 | 0, /* bitpos */ | |
1375 | complain_overflow_dont, /* complain_on_overflow */ | |
1376 | bfd_elf_generic_reloc, /* special_function */ | |
1377 | AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12_NC), /* name */ | |
1378 | FALSE, /* partial_inplace */ | |
1379 | 0xfff, /* src_mask */ | |
1380 | 0xfff, /* dst_mask */ | |
1381 | FALSE), /* pcrel_offset */ | |
70151fb5 | 1382 | |
a12fad50 JW |
1383 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ |
1384 | HOWTO (AARCH64_R (TLSLD_ADD_LO12_NC), /* type */ | |
1385 | 0, /* rightshift */ | |
1386 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1387 | 12, /* bitsize */ | |
1388 | FALSE, /* pc_relative */ | |
1389 | 0, /* bitpos */ | |
1390 | complain_overflow_dont, /* complain_on_overflow */ | |
1391 | bfd_elf_generic_reloc, /* special_function */ | |
1392 | AARCH64_R_STR (TLSLD_ADD_LO12_NC), /* name */ | |
1393 | FALSE, /* partial_inplace */ | |
1394 | 0xfff, /* src_mask */ | |
1395 | 0xfff, /* dst_mask */ | |
1396 | FALSE), /* pcrel_offset */ | |
1397 | ||
1107e076 JW |
1398 | /* Get to the page for the GOT entry for the symbol |
1399 | (G(S) - P) using an ADRP instruction. */ | |
1400 | HOWTO (AARCH64_R (TLSLD_ADR_PAGE21), /* type */ | |
1401 | 12, /* rightshift */ | |
1402 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1403 | 21, /* bitsize */ | |
1404 | TRUE, /* pc_relative */ | |
1405 | 0, /* bitpos */ | |
1406 | complain_overflow_signed, /* complain_on_overflow */ | |
1407 | bfd_elf_generic_reloc, /* special_function */ | |
1408 | AARCH64_R_STR (TLSLD_ADR_PAGE21), /* name */ | |
1409 | FALSE, /* partial_inplace */ | |
1410 | 0x1fffff, /* src_mask */ | |
1411 | 0x1fffff, /* dst_mask */ | |
1412 | TRUE), /* pcrel_offset */ | |
1413 | ||
6c37fedc JW |
1414 | HOWTO (AARCH64_R (TLSLD_ADR_PREL21), /* type */ |
1415 | 0, /* rightshift */ | |
1416 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1417 | 21, /* bitsize */ | |
1418 | TRUE, /* pc_relative */ | |
1419 | 0, /* bitpos */ | |
1420 | complain_overflow_signed, /* complain_on_overflow */ | |
1421 | bfd_elf_generic_reloc, /* special_function */ | |
1422 | AARCH64_R_STR (TLSLD_ADR_PREL21), /* name */ | |
1423 | FALSE, /* partial_inplace */ | |
1424 | 0x1fffff, /* src_mask */ | |
1425 | 0x1fffff, /* dst_mask */ | |
1426 | TRUE), /* pcrel_offset */ | |
1427 | ||
4c562523 JW |
1428 | /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */ |
1429 | HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12), /* type */ | |
1430 | 1, /* rightshift */ | |
1431 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1432 | 11, /* bitsize */ | |
1433 | FALSE, /* pc_relative */ | |
1434 | 10, /* bitpos */ | |
1435 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1436 | bfd_elf_generic_reloc, /* special_function */ | |
1437 | AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12), /* name */ | |
1438 | FALSE, /* partial_inplace */ | |
1439 | 0x1ffc00, /* src_mask */ | |
1440 | 0x1ffc00, /* dst_mask */ | |
1441 | FALSE), /* pcrel_offset */ | |
1442 | ||
1443 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12, but no overflow check. */ | |
1444 | HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12_NC), /* type */ | |
1445 | 1, /* rightshift */ | |
1446 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1447 | 11, /* bitsize */ | |
1448 | FALSE, /* pc_relative */ | |
1449 | 10, /* bitpos */ | |
1450 | complain_overflow_dont, /* complain_on_overflow */ | |
1451 | bfd_elf_generic_reloc, /* special_function */ | |
1452 | AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12_NC), /* name */ | |
1453 | FALSE, /* partial_inplace */ | |
1454 | 0x1ffc00, /* src_mask */ | |
1455 | 0x1ffc00, /* dst_mask */ | |
1456 | FALSE), /* pcrel_offset */ | |
1457 | ||
1458 | /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */ | |
1459 | HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12), /* type */ | |
1460 | 2, /* rightshift */ | |
1461 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1462 | 10, /* bitsize */ | |
1463 | FALSE, /* pc_relative */ | |
1464 | 10, /* bitpos */ | |
1465 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1466 | bfd_elf_generic_reloc, /* special_function */ | |
1467 | AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12), /* name */ | |
1468 | FALSE, /* partial_inplace */ | |
1469 | 0x3ffc00, /* src_mask */ | |
1470 | 0x3ffc00, /* dst_mask */ | |
1471 | FALSE), /* pcrel_offset */ | |
1472 | ||
1473 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12, but no overflow check. */ | |
1474 | HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12_NC), /* type */ | |
1475 | 2, /* rightshift */ | |
1476 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1477 | 10, /* bitsize */ | |
1478 | FALSE, /* pc_relative */ | |
1479 | 10, /* bitpos */ | |
1480 | complain_overflow_dont, /* complain_on_overflow */ | |
1481 | bfd_elf_generic_reloc, /* special_function */ | |
1482 | AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12_NC), /* name */ | |
1483 | FALSE, /* partial_inplace */ | |
1484 | 0xffc00, /* src_mask */ | |
1485 | 0xffc00, /* dst_mask */ | |
1486 | FALSE), /* pcrel_offset */ | |
1487 | ||
1488 | /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */ | |
1489 | HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12), /* type */ | |
1490 | 3, /* rightshift */ | |
1491 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1492 | 9, /* bitsize */ | |
1493 | FALSE, /* pc_relative */ | |
1494 | 10, /* bitpos */ | |
1495 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1496 | bfd_elf_generic_reloc, /* special_function */ | |
1497 | AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12), /* name */ | |
1498 | FALSE, /* partial_inplace */ | |
1499 | 0x3ffc00, /* src_mask */ | |
1500 | 0x3ffc00, /* dst_mask */ | |
1501 | FALSE), /* pcrel_offset */ | |
1502 | ||
1503 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12, but no overflow check. */ | |
1504 | HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12_NC), /* type */ | |
1505 | 3, /* rightshift */ | |
1506 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1507 | 9, /* bitsize */ | |
1508 | FALSE, /* pc_relative */ | |
1509 | 10, /* bitpos */ | |
1510 | complain_overflow_dont, /* complain_on_overflow */ | |
1511 | bfd_elf_generic_reloc, /* special_function */ | |
1512 | AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12_NC), /* name */ | |
1513 | FALSE, /* partial_inplace */ | |
1514 | 0x7fc00, /* src_mask */ | |
1515 | 0x7fc00, /* dst_mask */ | |
1516 | FALSE), /* pcrel_offset */ | |
1517 | ||
1518 | /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */ | |
1519 | HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12), /* type */ | |
1520 | 0, /* rightshift */ | |
1521 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1522 | 12, /* bitsize */ | |
1523 | FALSE, /* pc_relative */ | |
1524 | 10, /* bitpos */ | |
1525 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1526 | bfd_elf_generic_reloc, /* special_function */ | |
1527 | AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12), /* name */ | |
1528 | FALSE, /* partial_inplace */ | |
1529 | 0x3ffc00, /* src_mask */ | |
1530 | 0x3ffc00, /* dst_mask */ | |
1531 | FALSE), /* pcrel_offset */ | |
1532 | ||
1533 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12, but no overflow check. */ | |
1534 | HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12_NC), /* type */ | |
1535 | 0, /* rightshift */ | |
1536 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1537 | 12, /* bitsize */ | |
1538 | FALSE, /* pc_relative */ | |
1539 | 10, /* bitpos */ | |
1540 | complain_overflow_dont, /* complain_on_overflow */ | |
1541 | bfd_elf_generic_reloc, /* special_function */ | |
1542 | AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12_NC), /* name */ | |
1543 | FALSE, /* partial_inplace */ | |
1544 | 0x3ffc00, /* src_mask */ | |
1545 | 0x3ffc00, /* dst_mask */ | |
1546 | FALSE), /* pcrel_offset */ | |
1547 | ||
49df5539 JW |
1548 | /* MOVZ: bit[15:0] of byte offset to module TLS base address. */ |
1549 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0), /* type */ | |
1550 | 0, /* rightshift */ | |
1551 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1552 | 16, /* bitsize */ | |
1553 | FALSE, /* pc_relative */ | |
1554 | 0, /* bitpos */ | |
1555 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1556 | bfd_elf_generic_reloc, /* special_function */ | |
1557 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0), /* name */ | |
1558 | FALSE, /* partial_inplace */ | |
1559 | 0xffff, /* src_mask */ | |
1560 | 0xffff, /* dst_mask */ | |
1561 | FALSE), /* pcrel_offset */ | |
1562 | ||
1563 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0. */ | |
1564 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0_NC), /* type */ | |
1565 | 0, /* rightshift */ | |
1566 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1567 | 16, /* bitsize */ | |
1568 | FALSE, /* pc_relative */ | |
1569 | 0, /* bitpos */ | |
1570 | complain_overflow_dont, /* complain_on_overflow */ | |
1571 | bfd_elf_generic_reloc, /* special_function */ | |
1572 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0_NC), /* name */ | |
1573 | FALSE, /* partial_inplace */ | |
1574 | 0xffff, /* src_mask */ | |
1575 | 0xffff, /* dst_mask */ | |
1576 | FALSE), /* pcrel_offset */ | |
1577 | ||
1578 | /* MOVZ: bit[31:16] of byte offset to module TLS base address. */ | |
1579 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G1), /* type */ | |
1580 | 16, /* rightshift */ | |
1581 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1582 | 16, /* bitsize */ | |
1583 | FALSE, /* pc_relative */ | |
1584 | 0, /* bitpos */ | |
1585 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1586 | bfd_elf_generic_reloc, /* special_function */ | |
1587 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1), /* name */ | |
1588 | FALSE, /* partial_inplace */ | |
1589 | 0xffff, /* src_mask */ | |
1590 | 0xffff, /* dst_mask */ | |
1591 | FALSE), /* pcrel_offset */ | |
1592 | ||
1593 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1. */ | |
1594 | HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G1_NC), /* type */ | |
1595 | 16, /* rightshift */ | |
1596 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1597 | 16, /* bitsize */ | |
1598 | FALSE, /* pc_relative */ | |
1599 | 0, /* bitpos */ | |
1600 | complain_overflow_dont, /* complain_on_overflow */ | |
1601 | bfd_elf_generic_reloc, /* special_function */ | |
1602 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1_NC), /* name */ | |
1603 | FALSE, /* partial_inplace */ | |
1604 | 0xffff, /* src_mask */ | |
1605 | 0xffff, /* dst_mask */ | |
1606 | FALSE), /* pcrel_offset */ | |
1607 | ||
1608 | /* MOVZ: bit[47:32] of byte offset to module TLS base address. */ | |
1609 | HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G2), /* type */ | |
1610 | 32, /* rightshift */ | |
1611 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1612 | 16, /* bitsize */ | |
1613 | FALSE, /* pc_relative */ | |
1614 | 0, /* bitpos */ | |
1615 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1616 | bfd_elf_generic_reloc, /* special_function */ | |
1617 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G2), /* name */ | |
1618 | FALSE, /* partial_inplace */ | |
1619 | 0xffff, /* src_mask */ | |
1620 | 0xffff, /* dst_mask */ | |
1621 | FALSE), /* pcrel_offset */ | |
1622 | ||
a6bb11b2 | 1623 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2), /* type */ |
bb3f9ed8 | 1624 | 32, /* rightshift */ |
a06ea964 | 1625 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1626 | 16, /* bitsize */ |
a06ea964 NC |
1627 | FALSE, /* pc_relative */ |
1628 | 0, /* bitpos */ | |
0172429c | 1629 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1630 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1631 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G2), /* name */ |
a06ea964 NC |
1632 | FALSE, /* partial_inplace */ |
1633 | 0xffff, /* src_mask */ | |
1634 | 0xffff, /* dst_mask */ | |
1635 | FALSE), /* pcrel_offset */ | |
1636 | ||
a6bb11b2 | 1637 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1), /* type */ |
bb3f9ed8 | 1638 | 16, /* rightshift */ |
a06ea964 | 1639 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1640 | 16, /* bitsize */ |
a06ea964 NC |
1641 | FALSE, /* pc_relative */ |
1642 | 0, /* bitpos */ | |
1643 | complain_overflow_dont, /* complain_on_overflow */ | |
1644 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1645 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1), /* name */ |
a06ea964 NC |
1646 | FALSE, /* partial_inplace */ |
1647 | 0xffff, /* src_mask */ | |
1648 | 0xffff, /* dst_mask */ | |
1649 | FALSE), /* pcrel_offset */ | |
1650 | ||
a6bb11b2 | 1651 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */ |
bb3f9ed8 | 1652 | 16, /* rightshift */ |
a06ea964 | 1653 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1654 | 16, /* bitsize */ |
a06ea964 NC |
1655 | FALSE, /* pc_relative */ |
1656 | 0, /* bitpos */ | |
1657 | complain_overflow_dont, /* complain_on_overflow */ | |
1658 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1659 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC), /* name */ |
a06ea964 NC |
1660 | FALSE, /* partial_inplace */ |
1661 | 0xffff, /* src_mask */ | |
1662 | 0xffff, /* dst_mask */ | |
1663 | FALSE), /* pcrel_offset */ | |
1664 | ||
a6bb11b2 | 1665 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0), /* type */ |
a06ea964 NC |
1666 | 0, /* rightshift */ |
1667 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
07875fbc | 1668 | 16, /* bitsize */ |
a06ea964 NC |
1669 | FALSE, /* pc_relative */ |
1670 | 0, /* bitpos */ | |
1671 | complain_overflow_dont, /* complain_on_overflow */ | |
1672 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1673 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0), /* name */ |
a06ea964 NC |
1674 | FALSE, /* partial_inplace */ |
1675 | 0xffff, /* src_mask */ | |
1676 | 0xffff, /* dst_mask */ | |
1677 | FALSE), /* pcrel_offset */ | |
1678 | ||
a6bb11b2 | 1679 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC), /* type */ |
a06ea964 NC |
1680 | 0, /* rightshift */ |
1681 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
07875fbc | 1682 | 16, /* bitsize */ |
a06ea964 NC |
1683 | FALSE, /* pc_relative */ |
1684 | 0, /* bitpos */ | |
1685 | complain_overflow_dont, /* complain_on_overflow */ | |
1686 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1687 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC), /* name */ |
a06ea964 NC |
1688 | FALSE, /* partial_inplace */ |
1689 | 0xffff, /* src_mask */ | |
1690 | 0xffff, /* dst_mask */ | |
1691 | FALSE), /* pcrel_offset */ | |
1692 | ||
a6bb11b2 | 1693 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12), /* type */ |
bb3f9ed8 | 1694 | 12, /* rightshift */ |
a06ea964 NC |
1695 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1696 | 12, /* bitsize */ | |
1697 | FALSE, /* pc_relative */ | |
1698 | 0, /* bitpos */ | |
bab91cce | 1699 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1700 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1701 | AARCH64_R_STR (TLSLE_ADD_TPREL_HI12), /* name */ |
a06ea964 NC |
1702 | FALSE, /* partial_inplace */ |
1703 | 0xfff, /* src_mask */ | |
1704 | 0xfff, /* dst_mask */ | |
1705 | FALSE), /* pcrel_offset */ | |
1706 | ||
a6bb11b2 | 1707 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12), /* type */ |
a06ea964 NC |
1708 | 0, /* rightshift */ |
1709 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1710 | 12, /* bitsize */ | |
1711 | FALSE, /* pc_relative */ | |
1712 | 0, /* bitpos */ | |
36e6c140 | 1713 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1714 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1715 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12), /* name */ |
a06ea964 NC |
1716 | FALSE, /* partial_inplace */ |
1717 | 0xfff, /* src_mask */ | |
1718 | 0xfff, /* dst_mask */ | |
1719 | FALSE), /* pcrel_offset */ | |
1720 | ||
a6bb11b2 | 1721 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC), /* type */ |
a06ea964 NC |
1722 | 0, /* rightshift */ |
1723 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1724 | 12, /* bitsize */ | |
1725 | FALSE, /* pc_relative */ | |
1726 | 0, /* bitpos */ | |
1727 | complain_overflow_dont, /* complain_on_overflow */ | |
1728 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1729 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC), /* name */ |
a06ea964 NC |
1730 | FALSE, /* partial_inplace */ |
1731 | 0xfff, /* src_mask */ | |
1732 | 0xfff, /* dst_mask */ | |
1733 | FALSE), /* pcrel_offset */ | |
a06ea964 | 1734 | |
84f1b9fb RL |
1735 | /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */ |
1736 | HOWTO (AARCH64_R (TLSLE_LDST16_TPREL_LO12), /* type */ | |
1737 | 1, /* rightshift */ | |
1738 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1739 | 11, /* bitsize */ | |
1740 | FALSE, /* pc_relative */ | |
1741 | 10, /* bitpos */ | |
1742 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1743 | bfd_elf_generic_reloc, /* special_function */ | |
1744 | AARCH64_R_STR (TLSLE_LDST16_TPREL_LO12), /* name */ | |
1745 | FALSE, /* partial_inplace */ | |
1746 | 0x1ffc00, /* src_mask */ | |
1747 | 0x1ffc00, /* dst_mask */ | |
1748 | FALSE), /* pcrel_offset */ | |
1749 | ||
1750 | /* Same as BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12, but no overflow check. */ | |
1751 | HOWTO (AARCH64_R (TLSLE_LDST16_TPREL_LO12_NC), /* type */ | |
1752 | 1, /* rightshift */ | |
1753 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1754 | 11, /* bitsize */ | |
1755 | FALSE, /* pc_relative */ | |
1756 | 10, /* bitpos */ | |
1757 | complain_overflow_dont, /* complain_on_overflow */ | |
1758 | bfd_elf_generic_reloc, /* special_function */ | |
1759 | AARCH64_R_STR (TLSLE_LDST16_TPREL_LO12_NC), /* name */ | |
1760 | FALSE, /* partial_inplace */ | |
1761 | 0x1ffc00, /* src_mask */ | |
1762 | 0x1ffc00, /* dst_mask */ | |
1763 | FALSE), /* pcrel_offset */ | |
1764 | ||
1765 | /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */ | |
1766 | HOWTO (AARCH64_R (TLSLE_LDST32_TPREL_LO12), /* type */ | |
1767 | 2, /* rightshift */ | |
1768 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1769 | 10, /* bitsize */ | |
1770 | FALSE, /* pc_relative */ | |
1771 | 10, /* bitpos */ | |
1772 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1773 | bfd_elf_generic_reloc, /* special_function */ | |
1774 | AARCH64_R_STR (TLSLE_LDST32_TPREL_LO12), /* name */ | |
1775 | FALSE, /* partial_inplace */ | |
1776 | 0xffc00, /* src_mask */ | |
1777 | 0xffc00, /* dst_mask */ | |
1778 | FALSE), /* pcrel_offset */ | |
1779 | ||
1780 | /* Same as BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12, but no overflow check. */ | |
1781 | HOWTO (AARCH64_R (TLSLE_LDST32_TPREL_LO12_NC), /* type */ | |
1782 | 2, /* rightshift */ | |
1783 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1784 | 10, /* bitsize */ | |
1785 | FALSE, /* pc_relative */ | |
1786 | 10, /* bitpos */ | |
1787 | complain_overflow_dont, /* complain_on_overflow */ | |
1788 | bfd_elf_generic_reloc, /* special_function */ | |
1789 | AARCH64_R_STR (TLSLE_LDST32_TPREL_LO12_NC), /* name */ | |
1790 | FALSE, /* partial_inplace */ | |
1791 | 0xffc00, /* src_mask */ | |
1792 | 0xffc00, /* dst_mask */ | |
1793 | FALSE), /* pcrel_offset */ | |
1794 | ||
1795 | /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */ | |
1796 | HOWTO (AARCH64_R (TLSLE_LDST64_TPREL_LO12), /* type */ | |
1797 | 3, /* rightshift */ | |
1798 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1799 | 9, /* bitsize */ | |
1800 | FALSE, /* pc_relative */ | |
1801 | 10, /* bitpos */ | |
1802 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1803 | bfd_elf_generic_reloc, /* special_function */ | |
1804 | AARCH64_R_STR (TLSLE_LDST64_TPREL_LO12), /* name */ | |
1805 | FALSE, /* partial_inplace */ | |
1806 | 0x7fc00, /* src_mask */ | |
1807 | 0x7fc00, /* dst_mask */ | |
1808 | FALSE), /* pcrel_offset */ | |
1809 | ||
1810 | /* Same as BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12, but no overflow check. */ | |
1811 | HOWTO (AARCH64_R (TLSLE_LDST64_TPREL_LO12_NC), /* type */ | |
1812 | 3, /* rightshift */ | |
1813 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1814 | 9, /* bitsize */ | |
1815 | FALSE, /* pc_relative */ | |
1816 | 10, /* bitpos */ | |
1817 | complain_overflow_dont, /* complain_on_overflow */ | |
1818 | bfd_elf_generic_reloc, /* special_function */ | |
1819 | AARCH64_R_STR (TLSLE_LDST64_TPREL_LO12_NC), /* name */ | |
1820 | FALSE, /* partial_inplace */ | |
1821 | 0x7fc00, /* src_mask */ | |
1822 | 0x7fc00, /* dst_mask */ | |
1823 | FALSE), /* pcrel_offset */ | |
1824 | ||
1825 | /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */ | |
1826 | HOWTO (AARCH64_R (TLSLE_LDST8_TPREL_LO12), /* type */ | |
1827 | 0, /* rightshift */ | |
1828 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1829 | 12, /* bitsize */ | |
1830 | FALSE, /* pc_relative */ | |
1831 | 10, /* bitpos */ | |
1832 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1833 | bfd_elf_generic_reloc, /* special_function */ | |
1834 | AARCH64_R_STR (TLSLE_LDST8_TPREL_LO12), /* name */ | |
1835 | FALSE, /* partial_inplace */ | |
1836 | 0x3ffc00, /* src_mask */ | |
1837 | 0x3ffc00, /* dst_mask */ | |
1838 | FALSE), /* pcrel_offset */ | |
1839 | ||
1840 | /* Same as BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12, but no overflow check. */ | |
1841 | HOWTO (AARCH64_R (TLSLE_LDST8_TPREL_LO12_NC), /* type */ | |
1842 | 0, /* rightshift */ | |
1843 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1844 | 12, /* bitsize */ | |
1845 | FALSE, /* pc_relative */ | |
1846 | 10, /* bitpos */ | |
1847 | complain_overflow_dont, /* complain_on_overflow */ | |
1848 | bfd_elf_generic_reloc, /* special_function */ | |
1849 | AARCH64_R_STR (TLSLE_LDST8_TPREL_LO12_NC), /* name */ | |
1850 | FALSE, /* partial_inplace */ | |
1851 | 0x3ffc00, /* src_mask */ | |
1852 | 0x3ffc00, /* dst_mask */ | |
1853 | FALSE), /* pcrel_offset */ | |
1854 | ||
a6bb11b2 | 1855 | HOWTO (AARCH64_R (TLSDESC_LD_PREL19), /* type */ |
bb3f9ed8 | 1856 | 2, /* rightshift */ |
a06ea964 | 1857 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1ada945d | 1858 | 19, /* bitsize */ |
a06ea964 NC |
1859 | TRUE, /* pc_relative */ |
1860 | 0, /* bitpos */ | |
1861 | complain_overflow_dont, /* complain_on_overflow */ | |
1862 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1863 | AARCH64_R_STR (TLSDESC_LD_PREL19), /* name */ |
a06ea964 | 1864 | FALSE, /* partial_inplace */ |
1ada945d MS |
1865 | 0x0ffffe0, /* src_mask */ |
1866 | 0x0ffffe0, /* dst_mask */ | |
a06ea964 NC |
1867 | TRUE), /* pcrel_offset */ |
1868 | ||
a6bb11b2 | 1869 | HOWTO (AARCH64_R (TLSDESC_ADR_PREL21), /* type */ |
a06ea964 NC |
1870 | 0, /* rightshift */ |
1871 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1872 | 21, /* bitsize */ | |
1873 | TRUE, /* pc_relative */ | |
1874 | 0, /* bitpos */ | |
1875 | complain_overflow_dont, /* complain_on_overflow */ | |
1876 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1877 | AARCH64_R_STR (TLSDESC_ADR_PREL21), /* name */ |
a06ea964 NC |
1878 | FALSE, /* partial_inplace */ |
1879 | 0x1fffff, /* src_mask */ | |
1880 | 0x1fffff, /* dst_mask */ | |
1881 | TRUE), /* pcrel_offset */ | |
1882 | ||
1883 | /* Get to the page for the GOT entry for the symbol | |
1884 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 1885 | HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21), /* type */ |
a06ea964 NC |
1886 | 12, /* rightshift */ |
1887 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1888 | 21, /* bitsize */ | |
1889 | TRUE, /* pc_relative */ | |
1890 | 0, /* bitpos */ | |
1891 | complain_overflow_dont, /* complain_on_overflow */ | |
1892 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1893 | AARCH64_R_STR (TLSDESC_ADR_PAGE21), /* name */ |
a06ea964 NC |
1894 | FALSE, /* partial_inplace */ |
1895 | 0x1fffff, /* src_mask */ | |
1896 | 0x1fffff, /* dst_mask */ | |
1897 | TRUE), /* pcrel_offset */ | |
1898 | ||
a6bb11b2 | 1899 | /* LD64: GOT offset G(S) & 0xff8. */ |
f955cccf | 1900 | HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12), /* type */ |
a06ea964 NC |
1901 | 3, /* rightshift */ |
1902 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1903 | 12, /* bitsize */ | |
1904 | FALSE, /* pc_relative */ | |
1905 | 0, /* bitpos */ | |
1906 | complain_overflow_dont, /* complain_on_overflow */ | |
1907 | bfd_elf_generic_reloc, /* special_function */ | |
f955cccf | 1908 | AARCH64_R_STR (TLSDESC_LD64_LO12), /* name */ |
a06ea964 | 1909 | FALSE, /* partial_inplace */ |
a6bb11b2 YZ |
1910 | 0xff8, /* src_mask */ |
1911 | 0xff8, /* dst_mask */ | |
1912 | FALSE), /* pcrel_offset */ | |
1913 | ||
1914 | /* LD32: GOT offset G(S) & 0xffc. */ | |
1915 | HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC), /* type */ | |
1916 | 2, /* rightshift */ | |
1917 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1918 | 12, /* bitsize */ | |
1919 | FALSE, /* pc_relative */ | |
1920 | 0, /* bitpos */ | |
1921 | complain_overflow_dont, /* complain_on_overflow */ | |
1922 | bfd_elf_generic_reloc, /* special_function */ | |
1923 | AARCH64_R_STR (TLSDESC_LD32_LO12_NC), /* name */ | |
1924 | FALSE, /* partial_inplace */ | |
1925 | 0xffc, /* src_mask */ | |
1926 | 0xffc, /* dst_mask */ | |
a06ea964 NC |
1927 | FALSE), /* pcrel_offset */ |
1928 | ||
1929 | /* ADD: GOT offset G(S) & 0xfff. */ | |
f955cccf | 1930 | HOWTO (AARCH64_R (TLSDESC_ADD_LO12), /* type */ |
a06ea964 NC |
1931 | 0, /* rightshift */ |
1932 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1933 | 12, /* bitsize */ | |
1934 | FALSE, /* pc_relative */ | |
1935 | 0, /* bitpos */ | |
f955cccf | 1936 | complain_overflow_dont,/* complain_on_overflow */ |
a06ea964 | 1937 | bfd_elf_generic_reloc, /* special_function */ |
f955cccf | 1938 | AARCH64_R_STR (TLSDESC_ADD_LO12), /* name */ |
a06ea964 NC |
1939 | FALSE, /* partial_inplace */ |
1940 | 0xfff, /* src_mask */ | |
1941 | 0xfff, /* dst_mask */ | |
1942 | FALSE), /* pcrel_offset */ | |
1943 | ||
a6bb11b2 | 1944 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G1), /* type */ |
bb3f9ed8 | 1945 | 16, /* rightshift */ |
a06ea964 NC |
1946 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1947 | 12, /* bitsize */ | |
1948 | FALSE, /* pc_relative */ | |
1949 | 0, /* bitpos */ | |
43a357f9 | 1950 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1951 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1952 | AARCH64_R_STR (TLSDESC_OFF_G1), /* name */ |
a06ea964 NC |
1953 | FALSE, /* partial_inplace */ |
1954 | 0xffff, /* src_mask */ | |
1955 | 0xffff, /* dst_mask */ | |
1956 | FALSE), /* pcrel_offset */ | |
1957 | ||
a6bb11b2 | 1958 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC), /* type */ |
a06ea964 NC |
1959 | 0, /* rightshift */ |
1960 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1961 | 12, /* bitsize */ | |
1962 | FALSE, /* pc_relative */ | |
1963 | 0, /* bitpos */ | |
1964 | complain_overflow_dont, /* complain_on_overflow */ | |
1965 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1966 | AARCH64_R_STR (TLSDESC_OFF_G0_NC), /* name */ |
a06ea964 NC |
1967 | FALSE, /* partial_inplace */ |
1968 | 0xffff, /* src_mask */ | |
1969 | 0xffff, /* dst_mask */ | |
1970 | FALSE), /* pcrel_offset */ | |
1971 | ||
a6bb11b2 | 1972 | HOWTO64 (AARCH64_R (TLSDESC_LDR), /* type */ |
a06ea964 NC |
1973 | 0, /* rightshift */ |
1974 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1975 | 12, /* bitsize */ | |
1976 | FALSE, /* pc_relative */ | |
1977 | 0, /* bitpos */ | |
1978 | complain_overflow_dont, /* complain_on_overflow */ | |
1979 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1980 | AARCH64_R_STR (TLSDESC_LDR), /* name */ |
a06ea964 NC |
1981 | FALSE, /* partial_inplace */ |
1982 | 0x0, /* src_mask */ | |
1983 | 0x0, /* dst_mask */ | |
1984 | FALSE), /* pcrel_offset */ | |
1985 | ||
a6bb11b2 | 1986 | HOWTO64 (AARCH64_R (TLSDESC_ADD), /* type */ |
a06ea964 NC |
1987 | 0, /* rightshift */ |
1988 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1989 | 12, /* bitsize */ | |
1990 | FALSE, /* pc_relative */ | |
1991 | 0, /* bitpos */ | |
1992 | complain_overflow_dont, /* complain_on_overflow */ | |
1993 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1994 | AARCH64_R_STR (TLSDESC_ADD), /* name */ |
a06ea964 NC |
1995 | FALSE, /* partial_inplace */ |
1996 | 0x0, /* src_mask */ | |
1997 | 0x0, /* dst_mask */ | |
1998 | FALSE), /* pcrel_offset */ | |
1999 | ||
a6bb11b2 | 2000 | HOWTO (AARCH64_R (TLSDESC_CALL), /* type */ |
a06ea964 NC |
2001 | 0, /* rightshift */ |
2002 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
7366006f | 2003 | 0, /* bitsize */ |
a06ea964 NC |
2004 | FALSE, /* pc_relative */ |
2005 | 0, /* bitpos */ | |
2006 | complain_overflow_dont, /* complain_on_overflow */ | |
2007 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 2008 | AARCH64_R_STR (TLSDESC_CALL), /* name */ |
a06ea964 NC |
2009 | FALSE, /* partial_inplace */ |
2010 | 0x0, /* src_mask */ | |
2011 | 0x0, /* dst_mask */ | |
2012 | FALSE), /* pcrel_offset */ | |
a6bb11b2 YZ |
2013 | |
2014 | HOWTO (AARCH64_R (COPY), /* type */ | |
2015 | 0, /* rightshift */ | |
2016 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2017 | 64, /* bitsize */ | |
2018 | FALSE, /* pc_relative */ | |
2019 | 0, /* bitpos */ | |
2020 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2021 | bfd_elf_generic_reloc, /* special_function */ | |
2022 | AARCH64_R_STR (COPY), /* name */ | |
2023 | TRUE, /* partial_inplace */ | |
2024 | 0xffffffff, /* src_mask */ | |
2025 | 0xffffffff, /* dst_mask */ | |
2026 | FALSE), /* pcrel_offset */ | |
2027 | ||
2028 | HOWTO (AARCH64_R (GLOB_DAT), /* type */ | |
2029 | 0, /* rightshift */ | |
2030 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2031 | 64, /* bitsize */ | |
2032 | FALSE, /* pc_relative */ | |
2033 | 0, /* bitpos */ | |
2034 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2035 | bfd_elf_generic_reloc, /* special_function */ | |
2036 | AARCH64_R_STR (GLOB_DAT), /* name */ | |
2037 | TRUE, /* partial_inplace */ | |
2038 | 0xffffffff, /* src_mask */ | |
2039 | 0xffffffff, /* dst_mask */ | |
2040 | FALSE), /* pcrel_offset */ | |
2041 | ||
2042 | HOWTO (AARCH64_R (JUMP_SLOT), /* type */ | |
2043 | 0, /* rightshift */ | |
2044 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2045 | 64, /* bitsize */ | |
2046 | FALSE, /* pc_relative */ | |
2047 | 0, /* bitpos */ | |
2048 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2049 | bfd_elf_generic_reloc, /* special_function */ | |
2050 | AARCH64_R_STR (JUMP_SLOT), /* name */ | |
2051 | TRUE, /* partial_inplace */ | |
2052 | 0xffffffff, /* src_mask */ | |
2053 | 0xffffffff, /* dst_mask */ | |
2054 | FALSE), /* pcrel_offset */ | |
2055 | ||
2056 | HOWTO (AARCH64_R (RELATIVE), /* type */ | |
2057 | 0, /* rightshift */ | |
2058 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2059 | 64, /* bitsize */ | |
2060 | FALSE, /* pc_relative */ | |
2061 | 0, /* bitpos */ | |
2062 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2063 | bfd_elf_generic_reloc, /* special_function */ | |
2064 | AARCH64_R_STR (RELATIVE), /* name */ | |
2065 | TRUE, /* partial_inplace */ | |
2066 | ALL_ONES, /* src_mask */ | |
2067 | ALL_ONES, /* dst_mask */ | |
2068 | FALSE), /* pcrel_offset */ | |
2069 | ||
2070 | HOWTO (AARCH64_R (TLS_DTPMOD), /* type */ | |
2071 | 0, /* rightshift */ | |
2072 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2073 | 64, /* bitsize */ | |
2074 | FALSE, /* pc_relative */ | |
2075 | 0, /* bitpos */ | |
2076 | complain_overflow_dont, /* complain_on_overflow */ | |
2077 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
2078 | #if ARCH_SIZE == 64 |
2079 | AARCH64_R_STR (TLS_DTPMOD64), /* name */ | |
2080 | #else | |
a6bb11b2 | 2081 | AARCH64_R_STR (TLS_DTPMOD), /* name */ |
da0781dc | 2082 | #endif |
a6bb11b2 YZ |
2083 | FALSE, /* partial_inplace */ |
2084 | 0, /* src_mask */ | |
2085 | ALL_ONES, /* dst_mask */ | |
2086 | FALSE), /* pc_reloffset */ | |
2087 | ||
2088 | HOWTO (AARCH64_R (TLS_DTPREL), /* type */ | |
2089 | 0, /* rightshift */ | |
2090 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2091 | 64, /* bitsize */ | |
2092 | FALSE, /* pc_relative */ | |
2093 | 0, /* bitpos */ | |
2094 | complain_overflow_dont, /* complain_on_overflow */ | |
2095 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
2096 | #if ARCH_SIZE == 64 |
2097 | AARCH64_R_STR (TLS_DTPREL64), /* name */ | |
2098 | #else | |
a6bb11b2 | 2099 | AARCH64_R_STR (TLS_DTPREL), /* name */ |
da0781dc | 2100 | #endif |
a6bb11b2 YZ |
2101 | FALSE, /* partial_inplace */ |
2102 | 0, /* src_mask */ | |
2103 | ALL_ONES, /* dst_mask */ | |
2104 | FALSE), /* pcrel_offset */ | |
2105 | ||
2106 | HOWTO (AARCH64_R (TLS_TPREL), /* type */ | |
2107 | 0, /* rightshift */ | |
2108 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2109 | 64, /* bitsize */ | |
2110 | FALSE, /* pc_relative */ | |
2111 | 0, /* bitpos */ | |
2112 | complain_overflow_dont, /* complain_on_overflow */ | |
2113 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
2114 | #if ARCH_SIZE == 64 |
2115 | AARCH64_R_STR (TLS_TPREL64), /* name */ | |
2116 | #else | |
a6bb11b2 | 2117 | AARCH64_R_STR (TLS_TPREL), /* name */ |
da0781dc | 2118 | #endif |
a6bb11b2 YZ |
2119 | FALSE, /* partial_inplace */ |
2120 | 0, /* src_mask */ | |
2121 | ALL_ONES, /* dst_mask */ | |
2122 | FALSE), /* pcrel_offset */ | |
2123 | ||
2124 | HOWTO (AARCH64_R (TLSDESC), /* type */ | |
2125 | 0, /* rightshift */ | |
2126 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2127 | 64, /* bitsize */ | |
2128 | FALSE, /* pc_relative */ | |
2129 | 0, /* bitpos */ | |
2130 | complain_overflow_dont, /* complain_on_overflow */ | |
2131 | bfd_elf_generic_reloc, /* special_function */ | |
2132 | AARCH64_R_STR (TLSDESC), /* name */ | |
2133 | FALSE, /* partial_inplace */ | |
2134 | 0, /* src_mask */ | |
2135 | ALL_ONES, /* dst_mask */ | |
2136 | FALSE), /* pcrel_offset */ | |
2137 | ||
2138 | HOWTO (AARCH64_R (IRELATIVE), /* type */ | |
2139 | 0, /* rightshift */ | |
2140 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2141 | 64, /* bitsize */ | |
2142 | FALSE, /* pc_relative */ | |
2143 | 0, /* bitpos */ | |
2144 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2145 | bfd_elf_generic_reloc, /* special_function */ | |
2146 | AARCH64_R_STR (IRELATIVE), /* name */ | |
2147 | FALSE, /* partial_inplace */ | |
2148 | 0, /* src_mask */ | |
2149 | ALL_ONES, /* dst_mask */ | |
2150 | FALSE), /* pcrel_offset */ | |
2151 | ||
2152 | EMPTY_HOWTO (0), | |
a06ea964 NC |
2153 | }; |
2154 | ||
a6bb11b2 YZ |
2155 | static reloc_howto_type elfNN_aarch64_howto_none = |
2156 | HOWTO (R_AARCH64_NONE, /* type */ | |
2157 | 0, /* rightshift */ | |
6346d5ca | 2158 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a6bb11b2 YZ |
2159 | 0, /* bitsize */ |
2160 | FALSE, /* pc_relative */ | |
2161 | 0, /* bitpos */ | |
2162 | complain_overflow_dont,/* complain_on_overflow */ | |
2163 | bfd_elf_generic_reloc, /* special_function */ | |
2164 | "R_AARCH64_NONE", /* name */ | |
2165 | FALSE, /* partial_inplace */ | |
2166 | 0, /* src_mask */ | |
2167 | 0, /* dst_mask */ | |
2168 | FALSE); /* pcrel_offset */ | |
2169 | ||
2170 | /* Given HOWTO, return the bfd internal relocation enumerator. */ | |
2171 | ||
2172 | static bfd_reloc_code_real_type | |
2173 | elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type *howto) | |
2174 | { | |
2175 | const int size | |
2176 | = (int) ARRAY_SIZE (elfNN_aarch64_howto_table); | |
2177 | const ptrdiff_t offset | |
2178 | = howto - elfNN_aarch64_howto_table; | |
2179 | ||
2180 | if (offset > 0 && offset < size - 1) | |
2181 | return BFD_RELOC_AARCH64_RELOC_START + offset; | |
2182 | ||
2183 | if (howto == &elfNN_aarch64_howto_none) | |
2184 | return BFD_RELOC_AARCH64_NONE; | |
2185 | ||
2186 | return BFD_RELOC_AARCH64_RELOC_START; | |
2187 | } | |
2188 | ||
2189 | /* Given R_TYPE, return the bfd internal relocation enumerator. */ | |
2190 | ||
2191 | static bfd_reloc_code_real_type | |
0aa13fee | 2192 | elfNN_aarch64_bfd_reloc_from_type (bfd *abfd, unsigned int r_type) |
a6bb11b2 YZ |
2193 | { |
2194 | static bfd_boolean initialized_p = FALSE; | |
2195 | /* Indexed by R_TYPE, values are offsets in the howto_table. */ | |
2196 | static unsigned int offsets[R_AARCH64_end]; | |
2197 | ||
535b785f | 2198 | if (!initialized_p) |
a6bb11b2 YZ |
2199 | { |
2200 | unsigned int i; | |
2201 | ||
2202 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) | |
2203 | if (elfNN_aarch64_howto_table[i].type != 0) | |
2204 | offsets[elfNN_aarch64_howto_table[i].type] = i; | |
2205 | ||
2206 | initialized_p = TRUE; | |
2207 | } | |
2208 | ||
2209 | if (r_type == R_AARCH64_NONE || r_type == R_AARCH64_NULL) | |
2210 | return BFD_RELOC_AARCH64_NONE; | |
2211 | ||
5860e3f8 NC |
2212 | /* PR 17512: file: b371e70a. */ |
2213 | if (r_type >= R_AARCH64_end) | |
2214 | { | |
0aa13fee AM |
2215 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
2216 | abfd, r_type); | |
5860e3f8 NC |
2217 | bfd_set_error (bfd_error_bad_value); |
2218 | return BFD_RELOC_AARCH64_NONE; | |
2219 | } | |
2220 | ||
a6bb11b2 YZ |
2221 | return BFD_RELOC_AARCH64_RELOC_START + offsets[r_type]; |
2222 | } | |
2223 | ||
2224 | struct elf_aarch64_reloc_map | |
2225 | { | |
2226 | bfd_reloc_code_real_type from; | |
2227 | bfd_reloc_code_real_type to; | |
2228 | }; | |
2229 | ||
2230 | /* Map bfd generic reloc to AArch64-specific reloc. */ | |
2231 | static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map[] = | |
2232 | { | |
2233 | {BFD_RELOC_NONE, BFD_RELOC_AARCH64_NONE}, | |
2234 | ||
2235 | /* Basic data relocations. */ | |
2236 | {BFD_RELOC_CTOR, BFD_RELOC_AARCH64_NN}, | |
2237 | {BFD_RELOC_64, BFD_RELOC_AARCH64_64}, | |
2238 | {BFD_RELOC_32, BFD_RELOC_AARCH64_32}, | |
2239 | {BFD_RELOC_16, BFD_RELOC_AARCH64_16}, | |
2240 | {BFD_RELOC_64_PCREL, BFD_RELOC_AARCH64_64_PCREL}, | |
2241 | {BFD_RELOC_32_PCREL, BFD_RELOC_AARCH64_32_PCREL}, | |
2242 | {BFD_RELOC_16_PCREL, BFD_RELOC_AARCH64_16_PCREL}, | |
2243 | }; | |
2244 | ||
2245 | /* Given the bfd internal relocation enumerator in CODE, return the | |
2246 | corresponding howto entry. */ | |
2247 | ||
2248 | static reloc_howto_type * | |
2249 | elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code) | |
2250 | { | |
2251 | unsigned int i; | |
2252 | ||
2253 | /* Convert bfd generic reloc to AArch64-specific reloc. */ | |
2254 | if (code < BFD_RELOC_AARCH64_RELOC_START | |
2255 | || code > BFD_RELOC_AARCH64_RELOC_END) | |
2256 | for (i = 0; i < ARRAY_SIZE (elf_aarch64_reloc_map); i++) | |
2257 | if (elf_aarch64_reloc_map[i].from == code) | |
2258 | { | |
2259 | code = elf_aarch64_reloc_map[i].to; | |
2260 | break; | |
2261 | } | |
2262 | ||
2263 | if (code > BFD_RELOC_AARCH64_RELOC_START | |
2264 | && code < BFD_RELOC_AARCH64_RELOC_END) | |
2265 | if (elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START].type) | |
2266 | return &elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START]; | |
2267 | ||
54757ed1 AP |
2268 | if (code == BFD_RELOC_AARCH64_NONE) |
2269 | return &elfNN_aarch64_howto_none; | |
2270 | ||
a6bb11b2 YZ |
2271 | return NULL; |
2272 | } | |
2273 | ||
a06ea964 | 2274 | static reloc_howto_type * |
0aa13fee | 2275 | elfNN_aarch64_howto_from_type (bfd *abfd, unsigned int r_type) |
a06ea964 | 2276 | { |
a6bb11b2 YZ |
2277 | bfd_reloc_code_real_type val; |
2278 | reloc_howto_type *howto; | |
2279 | ||
cec5225b YZ |
2280 | #if ARCH_SIZE == 32 |
2281 | if (r_type > 256) | |
2282 | { | |
2283 | bfd_set_error (bfd_error_bad_value); | |
2284 | return NULL; | |
2285 | } | |
2286 | #endif | |
2287 | ||
a6bb11b2 YZ |
2288 | if (r_type == R_AARCH64_NONE) |
2289 | return &elfNN_aarch64_howto_none; | |
a06ea964 | 2290 | |
0aa13fee | 2291 | val = elfNN_aarch64_bfd_reloc_from_type (abfd, r_type); |
a6bb11b2 | 2292 | howto = elfNN_aarch64_howto_from_bfd_reloc (val); |
a06ea964 | 2293 | |
a6bb11b2 YZ |
2294 | if (howto != NULL) |
2295 | return howto; | |
a06ea964 | 2296 | |
a06ea964 NC |
2297 | bfd_set_error (bfd_error_bad_value); |
2298 | return NULL; | |
2299 | } | |
2300 | ||
f3185997 | 2301 | static bfd_boolean |
0aa13fee | 2302 | elfNN_aarch64_info_to_howto (bfd *abfd, arelent *bfd_reloc, |
a06ea964 NC |
2303 | Elf_Internal_Rela *elf_reloc) |
2304 | { | |
2305 | unsigned int r_type; | |
2306 | ||
cec5225b | 2307 | r_type = ELFNN_R_TYPE (elf_reloc->r_info); |
0aa13fee | 2308 | bfd_reloc->howto = elfNN_aarch64_howto_from_type (abfd, r_type); |
f3185997 NC |
2309 | |
2310 | if (bfd_reloc->howto == NULL) | |
2311 | { | |
2312 | /* xgettext:c-format */ | |
2313 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, r_type); | |
2314 | return FALSE; | |
2315 | } | |
2316 | return TRUE; | |
a06ea964 NC |
2317 | } |
2318 | ||
a06ea964 | 2319 | static reloc_howto_type * |
cec5225b | 2320 | elfNN_aarch64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
2321 | bfd_reloc_code_real_type code) |
2322 | { | |
a6bb11b2 | 2323 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (code); |
a06ea964 | 2324 | |
a6bb11b2 YZ |
2325 | if (howto != NULL) |
2326 | return howto; | |
a06ea964 NC |
2327 | |
2328 | bfd_set_error (bfd_error_bad_value); | |
2329 | return NULL; | |
2330 | } | |
2331 | ||
2332 | static reloc_howto_type * | |
cec5225b | 2333 | elfNN_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
2334 | const char *r_name) |
2335 | { | |
2336 | unsigned int i; | |
2337 | ||
a6bb11b2 YZ |
2338 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) |
2339 | if (elfNN_aarch64_howto_table[i].name != NULL | |
2340 | && strcasecmp (elfNN_aarch64_howto_table[i].name, r_name) == 0) | |
2341 | return &elfNN_aarch64_howto_table[i]; | |
a06ea964 NC |
2342 | |
2343 | return NULL; | |
2344 | } | |
2345 | ||
07d6d2b8 AM |
2346 | #define TARGET_LITTLE_SYM aarch64_elfNN_le_vec |
2347 | #define TARGET_LITTLE_NAME "elfNN-littleaarch64" | |
2348 | #define TARGET_BIG_SYM aarch64_elfNN_be_vec | |
2349 | #define TARGET_BIG_NAME "elfNN-bigaarch64" | |
a06ea964 | 2350 | |
a06ea964 NC |
2351 | /* The linker script knows the section names for placement. |
2352 | The entry_names are used to do simple name mangling on the stubs. | |
2353 | Given a function name, and its type, the stub can be found. The | |
2354 | name can be changed. The only requirement is the %s be present. */ | |
2355 | #define STUB_ENTRY_NAME "__%s_veneer" | |
2356 | ||
2357 | /* The name of the dynamic interpreter. This is put in the .interp | |
2358 | section. */ | |
2359 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
2360 | ||
2361 | #define AARCH64_MAX_FWD_BRANCH_OFFSET \ | |
2362 | (((1 << 25) - 1) << 2) | |
2363 | #define AARCH64_MAX_BWD_BRANCH_OFFSET \ | |
2364 | (-((1 << 25) << 2)) | |
2365 | ||
2366 | #define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1) | |
2367 | #define AARCH64_MIN_ADRP_IMM (-(1 << 20)) | |
2368 | ||
2369 | static int | |
2370 | aarch64_valid_for_adrp_p (bfd_vma value, bfd_vma place) | |
2371 | { | |
2372 | bfd_signed_vma offset = (bfd_signed_vma) (PG (value) - PG (place)) >> 12; | |
2373 | return offset <= AARCH64_MAX_ADRP_IMM && offset >= AARCH64_MIN_ADRP_IMM; | |
2374 | } | |
2375 | ||
2376 | static int | |
2377 | aarch64_valid_branch_p (bfd_vma value, bfd_vma place) | |
2378 | { | |
2379 | bfd_signed_vma offset = (bfd_signed_vma) (value - place); | |
2380 | return (offset <= AARCH64_MAX_FWD_BRANCH_OFFSET | |
2381 | && offset >= AARCH64_MAX_BWD_BRANCH_OFFSET); | |
2382 | } | |
2383 | ||
2384 | static const uint32_t aarch64_adrp_branch_stub [] = | |
2385 | { | |
2386 | 0x90000010, /* adrp ip0, X */ | |
2387 | /* R_AARCH64_ADR_HI21_PCREL(X) */ | |
2388 | 0x91000210, /* add ip0, ip0, :lo12:X */ | |
2389 | /* R_AARCH64_ADD_ABS_LO12_NC(X) */ | |
2390 | 0xd61f0200, /* br ip0 */ | |
2391 | }; | |
2392 | ||
2393 | static const uint32_t aarch64_long_branch_stub[] = | |
2394 | { | |
cec5225b | 2395 | #if ARCH_SIZE == 64 |
a06ea964 | 2396 | 0x58000090, /* ldr ip0, 1f */ |
cec5225b YZ |
2397 | #else |
2398 | 0x18000090, /* ldr wip0, 1f */ | |
2399 | #endif | |
a06ea964 NC |
2400 | 0x10000011, /* adr ip1, #0 */ |
2401 | 0x8b110210, /* add ip0, ip0, ip1 */ | |
2402 | 0xd61f0200, /* br ip0 */ | |
cec5225b YZ |
2403 | 0x00000000, /* 1: .xword or .word |
2404 | R_AARCH64_PRELNN(X) + 12 | |
a06ea964 NC |
2405 | */ |
2406 | 0x00000000, | |
2407 | }; | |
2408 | ||
68fcca92 JW |
2409 | static const uint32_t aarch64_erratum_835769_stub[] = |
2410 | { | |
2411 | 0x00000000, /* Placeholder for multiply accumulate. */ | |
2412 | 0x14000000, /* b <label> */ | |
2413 | }; | |
2414 | ||
4106101c MS |
2415 | static const uint32_t aarch64_erratum_843419_stub[] = |
2416 | { | |
2417 | 0x00000000, /* Placeholder for LDR instruction. */ | |
2418 | 0x14000000, /* b <label> */ | |
2419 | }; | |
2420 | ||
a06ea964 NC |
2421 | /* Section name for stubs is the associated section name plus this |
2422 | string. */ | |
2423 | #define STUB_SUFFIX ".stub" | |
2424 | ||
cec5225b | 2425 | enum elf_aarch64_stub_type |
a06ea964 NC |
2426 | { |
2427 | aarch64_stub_none, | |
2428 | aarch64_stub_adrp_branch, | |
2429 | aarch64_stub_long_branch, | |
68fcca92 | 2430 | aarch64_stub_erratum_835769_veneer, |
4106101c | 2431 | aarch64_stub_erratum_843419_veneer, |
a06ea964 NC |
2432 | }; |
2433 | ||
cec5225b | 2434 | struct elf_aarch64_stub_hash_entry |
a06ea964 NC |
2435 | { |
2436 | /* Base hash table entry structure. */ | |
2437 | struct bfd_hash_entry root; | |
2438 | ||
2439 | /* The stub section. */ | |
2440 | asection *stub_sec; | |
2441 | ||
2442 | /* Offset within stub_sec of the beginning of this stub. */ | |
2443 | bfd_vma stub_offset; | |
2444 | ||
2445 | /* Given the symbol's value and its section we can determine its final | |
2446 | value when building the stubs (so the stub knows where to jump). */ | |
2447 | bfd_vma target_value; | |
2448 | asection *target_section; | |
2449 | ||
cec5225b | 2450 | enum elf_aarch64_stub_type stub_type; |
a06ea964 NC |
2451 | |
2452 | /* The symbol table entry, if any, that this was derived from. */ | |
cec5225b | 2453 | struct elf_aarch64_link_hash_entry *h; |
a06ea964 NC |
2454 | |
2455 | /* Destination symbol type */ | |
2456 | unsigned char st_type; | |
2457 | ||
2458 | /* Where this stub is being called from, or, in the case of combined | |
2459 | stub sections, the first input section in the group. */ | |
2460 | asection *id_sec; | |
2461 | ||
2462 | /* The name for the local symbol at the start of this stub. The | |
2463 | stub name in the hash table has to be unique; this does not, so | |
2464 | it can be friendlier. */ | |
2465 | char *output_name; | |
68fcca92 JW |
2466 | |
2467 | /* The instruction which caused this stub to be generated (only valid for | |
2468 | erratum 835769 workaround stubs at present). */ | |
2469 | uint32_t veneered_insn; | |
4106101c MS |
2470 | |
2471 | /* In an erratum 843419 workaround stub, the ADRP instruction offset. */ | |
2472 | bfd_vma adrp_offset; | |
a06ea964 NC |
2473 | }; |
2474 | ||
2475 | /* Used to build a map of a section. This is required for mixed-endian | |
2476 | code/data. */ | |
2477 | ||
cec5225b | 2478 | typedef struct elf_elf_section_map |
a06ea964 NC |
2479 | { |
2480 | bfd_vma vma; | |
2481 | char type; | |
2482 | } | |
cec5225b | 2483 | elf_aarch64_section_map; |
a06ea964 NC |
2484 | |
2485 | ||
2486 | typedef struct _aarch64_elf_section_data | |
2487 | { | |
2488 | struct bfd_elf_section_data elf; | |
2489 | unsigned int mapcount; | |
2490 | unsigned int mapsize; | |
cec5225b | 2491 | elf_aarch64_section_map *map; |
a06ea964 NC |
2492 | } |
2493 | _aarch64_elf_section_data; | |
2494 | ||
cec5225b | 2495 | #define elf_aarch64_section_data(sec) \ |
a06ea964 NC |
2496 | ((_aarch64_elf_section_data *) elf_section_data (sec)) |
2497 | ||
4e8516b2 AP |
2498 | /* The size of the thread control block which is defined to be two pointers. */ |
2499 | #define TCB_SIZE (ARCH_SIZE/8)*2 | |
a06ea964 NC |
2500 | |
2501 | struct elf_aarch64_local_symbol | |
2502 | { | |
2503 | unsigned int got_type; | |
2504 | bfd_signed_vma got_refcount; | |
2505 | bfd_vma got_offset; | |
2506 | ||
2507 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The | |
2508 | offset is from the end of the jump table and reserved entries | |
2509 | within the PLTGOT. | |
2510 | ||
2511 | The magic value (bfd_vma) -1 indicates that an offset has not be | |
2512 | allocated. */ | |
2513 | bfd_vma tlsdesc_got_jump_table_offset; | |
2514 | }; | |
2515 | ||
2516 | struct elf_aarch64_obj_tdata | |
2517 | { | |
2518 | struct elf_obj_tdata root; | |
2519 | ||
2520 | /* local symbol descriptors */ | |
2521 | struct elf_aarch64_local_symbol *locals; | |
2522 | ||
2523 | /* Zero to warn when linking objects with incompatible enum sizes. */ | |
2524 | int no_enum_size_warning; | |
2525 | ||
2526 | /* Zero to warn when linking objects with incompatible wchar_t sizes. */ | |
2527 | int no_wchar_size_warning; | |
cd702818 SD |
2528 | |
2529 | /* All GNU_PROPERTY_AARCH64_FEATURE_1_AND properties. */ | |
2530 | uint32_t gnu_and_prop; | |
37c18eed SD |
2531 | |
2532 | /* Zero to warn when linking objects with incompatible | |
2533 | GNU_PROPERTY_AARCH64_FEATURE_1_BTI. */ | |
2534 | int no_bti_warn; | |
2535 | ||
2536 | /* PLT type based on security. */ | |
2537 | aarch64_plt_type plt_type; | |
a06ea964 NC |
2538 | }; |
2539 | ||
2540 | #define elf_aarch64_tdata(bfd) \ | |
2541 | ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any) | |
2542 | ||
cec5225b | 2543 | #define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals) |
a06ea964 NC |
2544 | |
2545 | #define is_aarch64_elf(bfd) \ | |
2546 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
2547 | && elf_tdata (bfd) != NULL \ | |
2548 | && elf_object_id (bfd) == AARCH64_ELF_DATA) | |
2549 | ||
2550 | static bfd_boolean | |
cec5225b | 2551 | elfNN_aarch64_mkobject (bfd *abfd) |
a06ea964 NC |
2552 | { |
2553 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_aarch64_obj_tdata), | |
2554 | AARCH64_ELF_DATA); | |
2555 | } | |
2556 | ||
cec5225b YZ |
2557 | #define elf_aarch64_hash_entry(ent) \ |
2558 | ((struct elf_aarch64_link_hash_entry *)(ent)) | |
a06ea964 NC |
2559 | |
2560 | #define GOT_UNKNOWN 0 | |
2561 | #define GOT_NORMAL 1 | |
2562 | #define GOT_TLS_GD 2 | |
2563 | #define GOT_TLS_IE 4 | |
2564 | #define GOT_TLSDESC_GD 8 | |
2565 | ||
2566 | #define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD)) | |
2567 | ||
2568 | /* AArch64 ELF linker hash entry. */ | |
cec5225b | 2569 | struct elf_aarch64_link_hash_entry |
a06ea964 NC |
2570 | { |
2571 | struct elf_link_hash_entry root; | |
2572 | ||
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, | |
2792 | bfd_boolean create) | |
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, | |
2857 | const Elf_Internal_Sym *isym, | |
2858 | bfd_boolean definition ATTRIBUTE_UNUSED, | |
2859 | bfd_boolean dynamic ATTRIBUTE_UNUSED) | |
2860 | { | |
2861 | unsigned int isym_sto = isym->st_other & ~ELF_ST_VISIBILITY (-1); | |
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 | ||
a06ea964 NC |
2947 | static bfd_boolean |
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 TC |
2959 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, r_type, place, |
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 | ||
3053 | static bfd_boolean | |
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) | |
3059 | return FALSE; | |
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, | |
3104 | stub_name, FALSE, FALSE); | |
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, | |
3183 | TRUE, FALSE); | |
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 MS |
3214 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, |
3215 | TRUE, FALSE); | |
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 | ||
a06ea964 NC |
3230 | static bfd_boolean |
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 | ||
3363 | return TRUE; | |
3364 | } | |
3365 | ||
3366 | /* As above, but don't actually build the stub. Just bump offset so | |
3367 | we know stub section sizes. */ | |
3368 | ||
3369 | static bfd_boolean | |
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) | |
3394 | return TRUE; | |
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; | |
3404 | return TRUE; | |
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 NC |
3425 | |
3426 | if (!is_elf_hash_table (htab)) | |
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, |
cff69cf4 | 3521 | bfd_boolean 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 JW |
3657 | |
3658 | static bfd_boolean | |
3d14faea | 3659 | aarch64_mem_op_p (uint32_t insn, unsigned int *rt, unsigned int *rt2, |
68fcca92 JW |
3660 | bfd_boolean *pair, bfd_boolean *load) |
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)) | |
3671 | return FALSE; | |
3672 | ||
3673 | *pair = FALSE; | |
3674 | *load = FALSE; | |
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 | { |
68fcca92 | 3681 | *pair = TRUE; |
3d14faea | 3682 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
3683 | } |
3684 | *load = AARCH64_LD (insn); | |
3685 | return TRUE; | |
3686 | } | |
3687 | else if (AARCH64_LDST_NAP (insn) | |
3688 | || AARCH64_LDSTP_PI (insn) | |
3689 | || AARCH64_LDSTP_O (insn) | |
3690 | || AARCH64_LDSTP_PRE (insn)) | |
3691 | { | |
3692 | *pair = TRUE; | |
3693 | *rt = AARCH64_RT (insn); | |
3d14faea | 3694 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
3695 | *load = AARCH64_LD (insn); |
3696 | return TRUE; | |
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 JW |
3708 | if (AARCH64_LDST_PCREL (insn)) |
3709 | *load = TRUE; | |
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); | |
3715 | return TRUE; | |
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: | |
3745 | return FALSE; | |
3746 | } | |
3747 | return TRUE; | |
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: | |
3779 | return FALSE; | |
3780 | } | |
3781 | return TRUE; | |
3782 | } | |
3783 | ||
3784 | return FALSE; | |
3785 | } | |
3786 | ||
3787 | /* Return TRUE if INSN is multiply-accumulate. */ | |
3788 | ||
3789 | static bfd_boolean | |
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) | |
3799 | return TRUE; | |
3800 | ||
3801 | return FALSE; | |
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 | ||
3817 | static bfd_boolean | |
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; | |
3825 | bfd_boolean pair; | |
3826 | bfd_boolean load; | |
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)) | |
3834 | return TRUE; | |
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)))) |
68fcca92 JW |
3846 | return FALSE; |
3847 | ||
3848 | /* We conservatively put out stubs for all other cases (including | |
3849 | writebacks). */ | |
3850 | return TRUE; | |
3851 | } | |
3852 | ||
3853 | return FALSE; | |
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 | ||
68fcca92 | 3894 | static bfd_boolean |
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) | |
2144188d | 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)) | |
2144188d | 3924 | return FALSE; |
68fcca92 JW |
3925 | |
3926 | sec_data = elf_aarch64_section_data (section); | |
520c7b56 JW |
3927 | |
3928 | qsort (sec_data->map, sec_data->mapcount, | |
3929 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
3930 | ||
68fcca92 JW |
3931 | for (span = 0; span < sec_data->mapcount; span++) |
3932 | { | |
3933 | unsigned int span_start = sec_data->map[span].vma; | |
3934 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
3935 | ? sec_data->map[0].vma + section->size | |
3936 | : sec_data->map[span + 1].vma); | |
3937 | unsigned int i; | |
3938 | char span_type = sec_data->map[span].type; | |
3939 | ||
3940 | if (span_type == 'd') | |
3941 | continue; | |
3942 | ||
3943 | for (i = span_start; i + 4 < span_end; i += 4) | |
3944 | { | |
3945 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
3946 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
3947 | ||
3948 | if (aarch64_erratum_sequence (insn_1, insn_2)) | |
3949 | { | |
5421cc6e | 3950 | struct elf_aarch64_stub_hash_entry *stub_entry; |
35fee8b7 MS |
3951 | char *stub_name = _bfd_aarch64_erratum_835769_stub_name (num_fixes); |
3952 | if (! stub_name) | |
2144188d | 3953 | return FALSE; |
68fcca92 | 3954 | |
5421cc6e MS |
3955 | stub_entry = _bfd_aarch64_add_stub_entry_in_group (stub_name, |
3956 | section, | |
3957 | htab); | |
3958 | if (! stub_entry) | |
3959 | return FALSE; | |
68fcca92 | 3960 | |
5421cc6e MS |
3961 | stub_entry->stub_type = aarch64_stub_erratum_835769_veneer; |
3962 | stub_entry->target_section = section; | |
3963 | stub_entry->target_value = i + 4; | |
3964 | stub_entry->veneered_insn = insn_2; | |
3965 | stub_entry->output_name = stub_name; | |
68fcca92 JW |
3966 | num_fixes++; |
3967 | } | |
3968 | } | |
3969 | } | |
3970 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
3971 | free (contents); | |
3972 | } | |
3973 | ||
357d1523 MS |
3974 | *num_fixes_p = num_fixes; |
3975 | ||
2144188d | 3976 | return TRUE; |
68fcca92 JW |
3977 | } |
3978 | ||
13f622ec | 3979 | |
4106101c MS |
3980 | /* Test if instruction INSN is ADRP. */ |
3981 | ||
3982 | static bfd_boolean | |
3983 | _bfd_aarch64_adrp_p (uint32_t insn) | |
3984 | { | |
9fca35fc | 3985 | return ((insn & AARCH64_ADRP_OP_MASK) == AARCH64_ADRP_OP); |
4106101c MS |
3986 | } |
3987 | ||
3988 | ||
3989 | /* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */ | |
3990 | ||
3991 | static bfd_boolean | |
3992 | _bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1, uint32_t insn_2, | |
3993 | uint32_t insn_3) | |
3994 | { | |
3995 | uint32_t rt; | |
3996 | uint32_t rt2; | |
3997 | bfd_boolean pair; | |
3998 | bfd_boolean load; | |
3999 | ||
4000 | return (aarch64_mem_op_p (insn_2, &rt, &rt2, &pair, &load) | |
4001 | && (!pair | |
4002 | || (pair && !load)) | |
4003 | && AARCH64_LDST_UIMM (insn_3) | |
4004 | && AARCH64_RN (insn_3) == AARCH64_RD (insn_1)); | |
4005 | } | |
4006 | ||
4007 | ||
4008 | /* Test for the presence of Cortex-A53 erratum 843419 instruction sequence. | |
4009 | ||
4010 | Return TRUE if section CONTENTS at offset I contains one of the | |
4011 | erratum 843419 sequences, otherwise return FALSE. If a sequence is | |
4012 | seen set P_VENEER_I to the offset of the final LOAD/STORE | |
4013 | instruction in the sequence. | |
4014 | */ | |
4015 | ||
4016 | static bfd_boolean | |
4017 | _bfd_aarch64_erratum_843419_p (bfd_byte *contents, bfd_vma vma, | |
4018 | bfd_vma i, bfd_vma span_end, | |
4019 | bfd_vma *p_veneer_i) | |
4020 | { | |
4021 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
4022 | ||
4023 | if (!_bfd_aarch64_adrp_p (insn_1)) | |
4024 | return FALSE; | |
4025 | ||
4026 | if (span_end < i + 12) | |
4027 | return FALSE; | |
4028 | ||
4029 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
4030 | uint32_t insn_3 = bfd_getl32 (contents + i + 8); | |
4031 | ||
4032 | if ((vma & 0xfff) != 0xff8 && (vma & 0xfff) != 0xffc) | |
4033 | return FALSE; | |
4034 | ||
4035 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_3)) | |
4036 | { | |
4037 | *p_veneer_i = i + 8; | |
4038 | return TRUE; | |
4039 | } | |
4040 | ||
4041 | if (span_end < i + 16) | |
4042 | return FALSE; | |
4043 | ||
4044 | uint32_t insn_4 = bfd_getl32 (contents + i + 12); | |
4045 | ||
4046 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_4)) | |
4047 | { | |
4048 | *p_veneer_i = i + 12; | |
4049 | return TRUE; | |
4050 | } | |
4051 | ||
4052 | return FALSE; | |
4053 | } | |
4054 | ||
4055 | ||
13f622ec MS |
4056 | /* Resize all stub sections. */ |
4057 | ||
4058 | static void | |
4059 | _bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table *htab) | |
4060 | { | |
4061 | asection *section; | |
4062 | ||
4063 | /* OK, we've added some stubs. Find out the new size of the | |
4064 | stub sections. */ | |
4065 | for (section = htab->stub_bfd->sections; | |
4066 | section != NULL; section = section->next) | |
4067 | { | |
4068 | /* Ignore non-stub sections. */ | |
4069 | if (!strstr (section->name, STUB_SUFFIX)) | |
4070 | continue; | |
4071 | section->size = 0; | |
4072 | } | |
4073 | ||
4074 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab); | |
13f622ec | 4075 | |
61865519 MS |
4076 | for (section = htab->stub_bfd->sections; |
4077 | section != NULL; section = section->next) | |
4078 | { | |
4079 | if (!strstr (section->name, STUB_SUFFIX)) | |
4080 | continue; | |
4081 | ||
9a2ebffd JW |
4082 | /* Add space for a branch. Add 8 bytes to keep section 8 byte aligned, |
4083 | as long branch stubs contain a 64-bit address. */ | |
61865519 | 4084 | if (section->size) |
9a2ebffd | 4085 | section->size += 8; |
4106101c MS |
4086 | |
4087 | /* Ensure all stub sections have a size which is a multiple of | |
4088 | 4096. This is important in order to ensure that the insertion | |
4089 | of stub sections does not in itself move existing code around | |
739b5c9c TC |
4090 | in such a way that new errata sequences are created. We only do this |
4091 | when the ADRP workaround is enabled. If only the ADR workaround is | |
4092 | enabled then the stubs workaround won't ever be used. */ | |
4093 | if (htab->fix_erratum_843419 & ERRAT_ADRP) | |
4106101c MS |
4094 | if (section->size) |
4095 | section->size = BFD_ALIGN (section->size, 0x1000); | |
4096 | } | |
4097 | } | |
4098 | ||
9a2ebffd | 4099 | /* Construct an erratum 843419 workaround stub name. */ |
4106101c MS |
4100 | |
4101 | static char * | |
4102 | _bfd_aarch64_erratum_843419_stub_name (asection *input_section, | |
4103 | bfd_vma offset) | |
4104 | { | |
4105 | const bfd_size_type len = 8 + 4 + 1 + 8 + 1 + 16 + 1; | |
4106 | char *stub_name = bfd_malloc (len); | |
4107 | ||
4108 | if (stub_name != NULL) | |
4109 | snprintf (stub_name, len, "e843419@%04x_%08x_%" BFD_VMA_FMT "x", | |
4110 | input_section->owner->id, | |
4111 | input_section->id, | |
4112 | offset); | |
4113 | return stub_name; | |
4114 | } | |
4115 | ||
4116 | /* Build a stub_entry structure describing an 843419 fixup. | |
4117 | ||
4118 | The stub_entry constructed is populated with the bit pattern INSN | |
4119 | of the instruction located at OFFSET within input SECTION. | |
4120 | ||
4121 | Returns TRUE on success. */ | |
4122 | ||
4123 | static bfd_boolean | |
4124 | _bfd_aarch64_erratum_843419_fixup (uint32_t insn, | |
4125 | bfd_vma adrp_offset, | |
4126 | bfd_vma ldst_offset, | |
4127 | asection *section, | |
4128 | struct bfd_link_info *info) | |
4129 | { | |
4130 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
4131 | char *stub_name; | |
4132 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
4133 | ||
4134 | stub_name = _bfd_aarch64_erratum_843419_stub_name (section, ldst_offset); | |
bb69498c NC |
4135 | if (stub_name == NULL) |
4136 | return FALSE; | |
4106101c MS |
4137 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, |
4138 | FALSE, FALSE); | |
4139 | if (stub_entry) | |
4140 | { | |
4141 | free (stub_name); | |
4142 | return TRUE; | |
4143 | } | |
4144 | ||
4145 | /* We always place an 843419 workaround veneer in the stub section | |
4146 | attached to the input section in which an erratum sequence has | |
4147 | been found. This ensures that later in the link process (in | |
4148 | elfNN_aarch64_write_section) when we copy the veneered | |
4149 | instruction from the input section into the stub section the | |
4150 | copied instruction will have had any relocations applied to it. | |
4151 | If we placed workaround veneers in any other stub section then we | |
4152 | could not assume that all relocations have been processed on the | |
4153 | corresponding input section at the point we output the stub | |
bb69498c | 4154 | section. */ |
4106101c MS |
4155 | |
4156 | stub_entry = _bfd_aarch64_add_stub_entry_after (stub_name, section, htab); | |
4157 | if (stub_entry == NULL) | |
4158 | { | |
4159 | free (stub_name); | |
4160 | return FALSE; | |
4161 | } | |
4162 | ||
4163 | stub_entry->adrp_offset = adrp_offset; | |
4164 | stub_entry->target_value = ldst_offset; | |
4165 | stub_entry->target_section = section; | |
4166 | stub_entry->stub_type = aarch64_stub_erratum_843419_veneer; | |
4167 | stub_entry->veneered_insn = insn; | |
4168 | stub_entry->output_name = stub_name; | |
4169 | ||
4170 | return TRUE; | |
4171 | } | |
4172 | ||
4173 | ||
4174 | /* Scan an input section looking for the signature of erratum 843419. | |
4175 | ||
4176 | Scans input SECTION in INPUT_BFD looking for erratum 843419 | |
4177 | signatures, for each signature found a stub_entry is created | |
4178 | describing the location of the erratum for subsequent fixup. | |
4179 | ||
4180 | Return TRUE on successful scan, FALSE on failure to scan. | |
4181 | */ | |
4182 | ||
4183 | static bfd_boolean | |
4184 | _bfd_aarch64_erratum_843419_scan (bfd *input_bfd, asection *section, | |
4185 | struct bfd_link_info *info) | |
4186 | { | |
4187 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
4188 | ||
4189 | if (htab == NULL) | |
4190 | return TRUE; | |
4191 | ||
4192 | if (elf_section_type (section) != SHT_PROGBITS | |
4193 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
4194 | || (section->flags & SEC_EXCLUDE) != 0 | |
4195 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
4196 | || (section->output_section == bfd_abs_section_ptr)) | |
4197 | return TRUE; | |
4198 | ||
4199 | do | |
4200 | { | |
4201 | bfd_byte *contents = NULL; | |
4202 | struct _aarch64_elf_section_data *sec_data; | |
4203 | unsigned int span; | |
4204 | ||
4205 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
4206 | contents = elf_section_data (section)->this_hdr.contents; | |
4207 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
4208 | return FALSE; | |
4209 | ||
4210 | sec_data = elf_aarch64_section_data (section); | |
4211 | ||
4212 | qsort (sec_data->map, sec_data->mapcount, | |
4213 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
4214 | ||
4215 | for (span = 0; span < sec_data->mapcount; span++) | |
4216 | { | |
4217 | unsigned int span_start = sec_data->map[span].vma; | |
4218 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
4219 | ? sec_data->map[0].vma + section->size | |
4220 | : sec_data->map[span + 1].vma); | |
4221 | unsigned int i; | |
4222 | char span_type = sec_data->map[span].type; | |
4223 | ||
4224 | if (span_type == 'd') | |
4225 | continue; | |
4226 | ||
4227 | for (i = span_start; i + 8 < span_end; i += 4) | |
4228 | { | |
4229 | bfd_vma vma = (section->output_section->vma | |
4230 | + section->output_offset | |
4231 | + i); | |
4232 | bfd_vma veneer_i; | |
4233 | ||
4234 | if (_bfd_aarch64_erratum_843419_p | |
4235 | (contents, vma, i, span_end, &veneer_i)) | |
4236 | { | |
4237 | uint32_t insn = bfd_getl32 (contents + veneer_i); | |
4238 | ||
4239 | if (!_bfd_aarch64_erratum_843419_fixup (insn, i, veneer_i, | |
4240 | section, info)) | |
4241 | return FALSE; | |
4242 | } | |
4243 | } | |
4244 | } | |
4245 | ||
4246 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
4247 | free (contents); | |
61865519 | 4248 | } |
4106101c MS |
4249 | while (0); |
4250 | ||
4251 | return TRUE; | |
61865519 | 4252 | } |
13f622ec | 4253 | |
4106101c | 4254 | |
a06ea964 NC |
4255 | /* Determine and set the size of the stub section for a final link. |
4256 | ||
4257 | The basic idea here is to examine all the relocations looking for | |
4258 | PC-relative calls to a target that is unreachable with a "bl" | |
4259 | instruction. */ | |
4260 | ||
4261 | bfd_boolean | |
cec5225b | 4262 | elfNN_aarch64_size_stubs (bfd *output_bfd, |
a06ea964 NC |
4263 | bfd *stub_bfd, |
4264 | struct bfd_link_info *info, | |
4265 | bfd_signed_vma group_size, | |
4266 | asection * (*add_stub_section) (const char *, | |
4267 | asection *), | |
4268 | void (*layout_sections_again) (void)) | |
4269 | { | |
4270 | bfd_size_type stub_group_size; | |
4271 | bfd_boolean stubs_always_before_branch; | |
5421cc6e | 4272 | bfd_boolean stub_changed = FALSE; |
cec5225b | 4273 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); |
68fcca92 | 4274 | unsigned int num_erratum_835769_fixes = 0; |
a06ea964 NC |
4275 | |
4276 | /* Propagate mach to stub bfd, because it may not have been | |
4277 | finalized when we created stub_bfd. */ | |
4278 | bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd), | |
4279 | bfd_get_mach (output_bfd)); | |
4280 | ||
4281 | /* Stash our params away. */ | |
4282 | htab->stub_bfd = stub_bfd; | |
4283 | htab->add_stub_section = add_stub_section; | |
4284 | htab->layout_sections_again = layout_sections_again; | |
4285 | stubs_always_before_branch = group_size < 0; | |
4286 | if (group_size < 0) | |
4287 | stub_group_size = -group_size; | |
4288 | else | |
4289 | stub_group_size = group_size; | |
4290 | ||
4291 | if (stub_group_size == 1) | |
4292 | { | |
4293 | /* Default values. */ | |
b9eead84 | 4294 | /* AArch64 branch range is +-128MB. The value used is 1MB less. */ |
a06ea964 NC |
4295 | stub_group_size = 127 * 1024 * 1024; |
4296 | } | |
4297 | ||
4298 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
4299 | ||
4106101c MS |
4300 | (*htab->layout_sections_again) (); |
4301 | ||
5421cc6e MS |
4302 | if (htab->fix_erratum_835769) |
4303 | { | |
4304 | bfd *input_bfd; | |
4305 | ||
4306 | for (input_bfd = info->input_bfds; | |
4307 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
8c803a2d AM |
4308 | { |
4309 | if (!is_aarch64_elf (input_bfd) | |
4310 | || (input_bfd->flags & BFD_LINKER_CREATED) != 0) | |
4311 | continue; | |
4312 | ||
4313 | if (!_bfd_aarch64_erratum_835769_scan (input_bfd, info, | |
4314 | &num_erratum_835769_fixes)) | |
4315 | return FALSE; | |
4316 | } | |
5421cc6e | 4317 | |
4106101c MS |
4318 | _bfd_aarch64_resize_stubs (htab); |
4319 | (*htab->layout_sections_again) (); | |
4320 | } | |
4321 | ||
739b5c9c | 4322 | if (htab->fix_erratum_843419 != ERRAT_NONE) |
4106101c MS |
4323 | { |
4324 | bfd *input_bfd; | |
4325 | ||
4326 | for (input_bfd = info->input_bfds; | |
4327 | input_bfd != NULL; | |
4328 | input_bfd = input_bfd->link.next) | |
4329 | { | |
4330 | asection *section; | |
4331 | ||
8c803a2d AM |
4332 | if (!is_aarch64_elf (input_bfd) |
4333 | || (input_bfd->flags & BFD_LINKER_CREATED) != 0) | |
4334 | continue; | |
4335 | ||
4106101c MS |
4336 | for (section = input_bfd->sections; |
4337 | section != NULL; | |
4338 | section = section->next) | |
4339 | if (!_bfd_aarch64_erratum_843419_scan (input_bfd, section, info)) | |
4340 | return FALSE; | |
4341 | } | |
4342 | ||
4343 | _bfd_aarch64_resize_stubs (htab); | |
4344 | (*htab->layout_sections_again) (); | |
5421cc6e MS |
4345 | } |
4346 | ||
a06ea964 NC |
4347 | while (1) |
4348 | { | |
4349 | bfd *input_bfd; | |
a06ea964 | 4350 | |
9b9971aa MS |
4351 | for (input_bfd = info->input_bfds; |
4352 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
a06ea964 NC |
4353 | { |
4354 | Elf_Internal_Shdr *symtab_hdr; | |
4355 | asection *section; | |
4356 | Elf_Internal_Sym *local_syms = NULL; | |
4357 | ||
8c803a2d AM |
4358 | if (!is_aarch64_elf (input_bfd) |
4359 | || (input_bfd->flags & BFD_LINKER_CREATED) != 0) | |
4360 | continue; | |
4361 | ||
a06ea964 NC |
4362 | /* We'll need the symbol table in a second. */ |
4363 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
4364 | if (symtab_hdr->sh_info == 0) | |
4365 | continue; | |
4366 | ||
4367 | /* Walk over each section attached to the input bfd. */ | |
4368 | for (section = input_bfd->sections; | |
4369 | section != NULL; section = section->next) | |
4370 | { | |
4371 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
4372 | ||
4373 | /* If there aren't any relocs, then there's nothing more | |
4374 | to do. */ | |
4375 | if ((section->flags & SEC_RELOC) == 0 | |
4376 | || section->reloc_count == 0 | |
4377 | || (section->flags & SEC_CODE) == 0) | |
4378 | continue; | |
4379 | ||
4380 | /* If this section is a link-once section that will be | |
4381 | discarded, then don't create any stubs. */ | |
4382 | if (section->output_section == NULL | |
4383 | || section->output_section->owner != output_bfd) | |
4384 | continue; | |
4385 | ||
4386 | /* Get the relocs. */ | |
4387 | internal_relocs | |
4388 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, | |
4389 | NULL, info->keep_memory); | |
4390 | if (internal_relocs == NULL) | |
4391 | goto error_ret_free_local; | |
4392 | ||
4393 | /* Now examine each relocation. */ | |
4394 | irela = internal_relocs; | |
4395 | irelaend = irela + section->reloc_count; | |
4396 | for (; irela < irelaend; irela++) | |
4397 | { | |
4398 | unsigned int r_type, r_indx; | |
cec5225b YZ |
4399 | enum elf_aarch64_stub_type stub_type; |
4400 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
a06ea964 NC |
4401 | asection *sym_sec; |
4402 | bfd_vma sym_value; | |
4403 | bfd_vma destination; | |
cec5225b | 4404 | struct elf_aarch64_link_hash_entry *hash; |
a06ea964 NC |
4405 | const char *sym_name; |
4406 | char *stub_name; | |
4407 | const asection *id_sec; | |
4408 | unsigned char st_type; | |
4409 | bfd_size_type len; | |
4410 | ||
cec5225b YZ |
4411 | r_type = ELFNN_R_TYPE (irela->r_info); |
4412 | r_indx = ELFNN_R_SYM (irela->r_info); | |
a06ea964 NC |
4413 | |
4414 | if (r_type >= (unsigned int) R_AARCH64_end) | |
4415 | { | |
4416 | bfd_set_error (bfd_error_bad_value); | |
4417 | error_ret_free_internal: | |
4418 | if (elf_section_data (section)->relocs == NULL) | |
4419 | free (internal_relocs); | |
4420 | goto error_ret_free_local; | |
4421 | } | |
4422 | ||
4423 | /* Only look for stubs on unconditional branch and | |
4424 | branch and link instructions. */ | |
a6bb11b2 YZ |
4425 | if (r_type != (unsigned int) AARCH64_R (CALL26) |
4426 | && r_type != (unsigned int) AARCH64_R (JUMP26)) | |
a06ea964 NC |
4427 | continue; |
4428 | ||
4429 | /* Now determine the call target, its name, value, | |
4430 | section. */ | |
4431 | sym_sec = NULL; | |
4432 | sym_value = 0; | |
4433 | destination = 0; | |
4434 | hash = NULL; | |
4435 | sym_name = NULL; | |
4436 | if (r_indx < symtab_hdr->sh_info) | |
4437 | { | |
4438 | /* It's a local symbol. */ | |
4439 | Elf_Internal_Sym *sym; | |
4440 | Elf_Internal_Shdr *hdr; | |
4441 | ||
4442 | if (local_syms == NULL) | |
4443 | { | |
4444 | local_syms | |
4445 | = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4446 | if (local_syms == NULL) | |
4447 | local_syms | |
4448 | = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
4449 | symtab_hdr->sh_info, 0, | |
4450 | NULL, NULL, NULL); | |
4451 | if (local_syms == NULL) | |
4452 | goto error_ret_free_internal; | |
4453 | } | |
4454 | ||
4455 | sym = local_syms + r_indx; | |
4456 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
4457 | sym_sec = hdr->bfd_section; | |
4458 | if (!sym_sec) | |
4459 | /* This is an undefined symbol. It can never | |
4460 | be resolved. */ | |
4461 | continue; | |
4462 | ||
4463 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
4464 | sym_value = sym->st_value; | |
4465 | destination = (sym_value + irela->r_addend | |
4466 | + sym_sec->output_offset | |
4467 | + sym_sec->output_section->vma); | |
4468 | st_type = ELF_ST_TYPE (sym->st_info); | |
4469 | sym_name | |
4470 | = bfd_elf_string_from_elf_section (input_bfd, | |
4471 | symtab_hdr->sh_link, | |
4472 | sym->st_name); | |
4473 | } | |
4474 | else | |
4475 | { | |
4476 | int e_indx; | |
4477 | ||
4478 | e_indx = r_indx - symtab_hdr->sh_info; | |
cec5225b | 4479 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
4480 | elf_sym_hashes (input_bfd)[e_indx]); |
4481 | ||
4482 | while (hash->root.root.type == bfd_link_hash_indirect | |
4483 | || hash->root.root.type == bfd_link_hash_warning) | |
cec5225b | 4484 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
4485 | hash->root.root.u.i.link); |
4486 | ||
4487 | if (hash->root.root.type == bfd_link_hash_defined | |
4488 | || hash->root.root.type == bfd_link_hash_defweak) | |
4489 | { | |
cec5225b YZ |
4490 | struct elf_aarch64_link_hash_table *globals = |
4491 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
4492 | sym_sec = hash->root.root.u.def.section; |
4493 | sym_value = hash->root.root.u.def.value; | |
4494 | /* For a destination in a shared library, | |
4495 | use the PLT stub as target address to | |
4496 | decide whether a branch stub is | |
4497 | needed. */ | |
4498 | if (globals->root.splt != NULL && hash != NULL | |
4499 | && hash->root.plt.offset != (bfd_vma) - 1) | |
4500 | { | |
4501 | sym_sec = globals->root.splt; | |
4502 | sym_value = hash->root.plt.offset; | |
4503 | if (sym_sec->output_section != NULL) | |
4504 | destination = (sym_value | |
4505 | + sym_sec->output_offset | |
4506 | + | |
4507 | sym_sec->output_section->vma); | |
4508 | } | |
4509 | else if (sym_sec->output_section != NULL) | |
4510 | destination = (sym_value + irela->r_addend | |
4511 | + sym_sec->output_offset | |
4512 | + sym_sec->output_section->vma); | |
4513 | } | |
4514 | else if (hash->root.root.type == bfd_link_hash_undefined | |
4515 | || (hash->root.root.type | |
4516 | == bfd_link_hash_undefweak)) | |
4517 | { | |
4518 | /* For a shared library, use the PLT stub as | |
4519 | target address to decide whether a long | |
4520 | branch stub is needed. | |
4521 | For absolute code, they cannot be handled. */ | |
cec5225b YZ |
4522 | struct elf_aarch64_link_hash_table *globals = |
4523 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
4524 | |
4525 | if (globals->root.splt != NULL && hash != NULL | |
4526 | && hash->root.plt.offset != (bfd_vma) - 1) | |
4527 | { | |
4528 | sym_sec = globals->root.splt; | |
4529 | sym_value = hash->root.plt.offset; | |
4530 | if (sym_sec->output_section != NULL) | |
4531 | destination = (sym_value | |
4532 | + sym_sec->output_offset | |
4533 | + | |
4534 | sym_sec->output_section->vma); | |
4535 | } | |
4536 | else | |
4537 | continue; | |
4538 | } | |
4539 | else | |
4540 | { | |
4541 | bfd_set_error (bfd_error_bad_value); | |
4542 | goto error_ret_free_internal; | |
4543 | } | |
4544 | st_type = ELF_ST_TYPE (hash->root.type); | |
4545 | sym_name = hash->root.root.root.string; | |
4546 | } | |
4547 | ||
4548 | /* Determine what (if any) linker stub is needed. */ | |
9a228467 JW |
4549 | stub_type = aarch64_type_of_stub (section, irela, sym_sec, |
4550 | st_type, destination); | |
a06ea964 NC |
4551 | if (stub_type == aarch64_stub_none) |
4552 | continue; | |
4553 | ||
4554 | /* Support for grouping stub sections. */ | |
4555 | id_sec = htab->stub_group[section->id].link_sec; | |
4556 | ||
4557 | /* Get the name of this stub. */ | |
cec5225b | 4558 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, hash, |
a06ea964 NC |
4559 | irela); |
4560 | if (!stub_name) | |
4561 | goto error_ret_free_internal; | |
4562 | ||
4563 | stub_entry = | |
4564 | aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
4565 | stub_name, FALSE, FALSE); | |
4566 | if (stub_entry != NULL) | |
4567 | { | |
4568 | /* The proper stub has already been created. */ | |
4569 | free (stub_name); | |
3da64fe4 RA |
4570 | /* Always update this stub's target since it may have |
4571 | changed after layout. */ | |
4572 | stub_entry->target_value = sym_value + irela->r_addend; | |
a06ea964 NC |
4573 | continue; |
4574 | } | |
4575 | ||
ef857521 MS |
4576 | stub_entry = _bfd_aarch64_add_stub_entry_in_group |
4577 | (stub_name, section, htab); | |
a06ea964 NC |
4578 | if (stub_entry == NULL) |
4579 | { | |
4580 | free (stub_name); | |
4581 | goto error_ret_free_internal; | |
4582 | } | |
4583 | ||
2f340668 | 4584 | stub_entry->target_value = sym_value + irela->r_addend; |
a06ea964 NC |
4585 | stub_entry->target_section = sym_sec; |
4586 | stub_entry->stub_type = stub_type; | |
4587 | stub_entry->h = hash; | |
4588 | stub_entry->st_type = st_type; | |
4589 | ||
4590 | if (sym_name == NULL) | |
4591 | sym_name = "unnamed"; | |
4592 | len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name); | |
4593 | stub_entry->output_name = bfd_alloc (htab->stub_bfd, len); | |
4594 | if (stub_entry->output_name == NULL) | |
4595 | { | |
4596 | free (stub_name); | |
4597 | goto error_ret_free_internal; | |
4598 | } | |
4599 | ||
4600 | snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME, | |
4601 | sym_name); | |
4602 | ||
4603 | stub_changed = TRUE; | |
4604 | } | |
4605 | ||
4606 | /* We're done with the internal relocs, free them. */ | |
4607 | if (elf_section_data (section)->relocs == NULL) | |
4608 | free (internal_relocs); | |
4609 | } | |
4610 | } | |
4611 | ||
4612 | if (!stub_changed) | |
4613 | break; | |
4614 | ||
13f622ec | 4615 | _bfd_aarch64_resize_stubs (htab); |
a06ea964 NC |
4616 | |
4617 | /* Ask the linker to do its stuff. */ | |
4618 | (*htab->layout_sections_again) (); | |
4619 | stub_changed = FALSE; | |
4620 | } | |
4621 | ||
4622 | return TRUE; | |
4623 | ||
dc1e8a47 | 4624 | error_ret_free_local: |
a06ea964 NC |
4625 | return FALSE; |
4626 | } | |
4627 | ||
4628 | /* Build all the stubs associated with the current output file. The | |
4629 | stubs are kept in a hash table attached to the main linker hash | |
4630 | table. We also set up the .plt entries for statically linked PIC | |
4631 | functions here. This function is called via aarch64_elf_finish in the | |
4632 | linker. */ | |
4633 | ||
4634 | bfd_boolean | |
cec5225b | 4635 | elfNN_aarch64_build_stubs (struct bfd_link_info *info) |
a06ea964 NC |
4636 | { |
4637 | asection *stub_sec; | |
4638 | struct bfd_hash_table *table; | |
cec5225b | 4639 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 4640 | |
cec5225b | 4641 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
4642 | |
4643 | for (stub_sec = htab->stub_bfd->sections; | |
4644 | stub_sec != NULL; stub_sec = stub_sec->next) | |
4645 | { | |
4646 | bfd_size_type size; | |
4647 | ||
4648 | /* Ignore non-stub sections. */ | |
4649 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
4650 | continue; | |
4651 | ||
4652 | /* Allocate memory to hold the linker stubs. */ | |
4653 | size = stub_sec->size; | |
4654 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); | |
4655 | if (stub_sec->contents == NULL && size != 0) | |
4656 | return FALSE; | |
4657 | stub_sec->size = 0; | |
61865519 | 4658 | |
9a2ebffd JW |
4659 | /* Add a branch around the stub section, and a nop, to keep it 8 byte |
4660 | aligned, as long branch stubs contain a 64-bit address. */ | |
61865519 | 4661 | bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents); |
9a2ebffd JW |
4662 | bfd_putl32 (INSN_NOP, stub_sec->contents + 4); |
4663 | stub_sec->size += 8; | |
a06ea964 NC |
4664 | } |
4665 | ||
4666 | /* Build the stubs as directed by the stub hash table. */ | |
4667 | table = &htab->stub_hash_table; | |
4668 | bfd_hash_traverse (table, aarch64_build_one_stub, info); | |
4669 | ||
4670 | return TRUE; | |
4671 | } | |
4672 | ||
4673 | ||
4674 | /* Add an entry to the code/data map for section SEC. */ | |
4675 | ||
4676 | static void | |
cec5225b | 4677 | elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma) |
a06ea964 NC |
4678 | { |
4679 | struct _aarch64_elf_section_data *sec_data = | |
cec5225b | 4680 | elf_aarch64_section_data (sec); |
a06ea964 NC |
4681 | unsigned int newidx; |
4682 | ||
4683 | if (sec_data->map == NULL) | |
4684 | { | |
cec5225b | 4685 | sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
4686 | sec_data->mapcount = 0; |
4687 | sec_data->mapsize = 1; | |
4688 | } | |
4689 | ||
4690 | newidx = sec_data->mapcount++; | |
4691 | ||
4692 | if (sec_data->mapcount > sec_data->mapsize) | |
4693 | { | |
4694 | sec_data->mapsize *= 2; | |
4695 | sec_data->map = bfd_realloc_or_free | |
cec5225b | 4696 | (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
4697 | } |
4698 | ||
4699 | if (sec_data->map) | |
4700 | { | |
4701 | sec_data->map[newidx].vma = vma; | |
4702 | sec_data->map[newidx].type = type; | |
4703 | } | |
4704 | } | |
4705 | ||
4706 | ||
4707 | /* Initialise maps of insn/data for input BFDs. */ | |
4708 | void | |
cec5225b | 4709 | bfd_elfNN_aarch64_init_maps (bfd *abfd) |
a06ea964 NC |
4710 | { |
4711 | Elf_Internal_Sym *isymbuf; | |
4712 | Elf_Internal_Shdr *hdr; | |
4713 | unsigned int i, localsyms; | |
4714 | ||
4715 | /* Make sure that we are dealing with an AArch64 elf binary. */ | |
4716 | if (!is_aarch64_elf (abfd)) | |
4717 | return; | |
4718 | ||
4719 | if ((abfd->flags & DYNAMIC) != 0) | |
68fcca92 | 4720 | return; |
a06ea964 NC |
4721 | |
4722 | hdr = &elf_symtab_hdr (abfd); | |
4723 | localsyms = hdr->sh_info; | |
4724 | ||
4725 | /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field | |
4726 | should contain the number of local symbols, which should come before any | |
4727 | global symbols. Mapping symbols are always local. */ | |
4728 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL); | |
4729 | ||
4730 | /* No internal symbols read? Skip this BFD. */ | |
4731 | if (isymbuf == NULL) | |
4732 | return; | |
4733 | ||
4734 | for (i = 0; i < localsyms; i++) | |
4735 | { | |
4736 | Elf_Internal_Sym *isym = &isymbuf[i]; | |
4737 | asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4738 | const char *name; | |
4739 | ||
4740 | if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL) | |
4741 | { | |
4742 | name = bfd_elf_string_from_elf_section (abfd, | |
4743 | hdr->sh_link, | |
4744 | isym->st_name); | |
4745 | ||
4746 | if (bfd_is_aarch64_special_symbol_name | |
4747 | (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP)) | |
cec5225b | 4748 | elfNN_aarch64_section_map_add (sec, name[1], isym->st_value); |
a06ea964 NC |
4749 | } |
4750 | } | |
4751 | } | |
4752 | ||
37c18eed SD |
4753 | static void |
4754 | setup_plt_values (struct bfd_link_info *link_info, | |
4755 | aarch64_plt_type plt_type) | |
4756 | { | |
4757 | struct elf_aarch64_link_hash_table *globals; | |
4758 | globals = elf_aarch64_hash_table (link_info); | |
4759 | ||
1dbade74 SD |
4760 | if (plt_type == PLT_BTI_PAC) |
4761 | { | |
68bb0359 | 4762 | globals->plt0_entry = elfNN_aarch64_small_plt0_bti_entry; |
1dbade74 SD |
4763 | |
4764 | /* Only in ET_EXEC we need PLTn with BTI. */ | |
4765 | if (bfd_link_pde (link_info)) | |
4766 | { | |
4767 | globals->plt_entry_size = PLT_BTI_PAC_SMALL_ENTRY_SIZE; | |
4768 | globals->plt_entry = elfNN_aarch64_small_plt_bti_pac_entry; | |
4769 | } | |
4770 | else | |
4771 | { | |
4772 | globals->plt_entry_size = PLT_PAC_SMALL_ENTRY_SIZE; | |
4773 | globals->plt_entry = elfNN_aarch64_small_plt_pac_entry; | |
4774 | } | |
4775 | } | |
4776 | else if (plt_type == PLT_BTI) | |
37c18eed | 4777 | { |
37c18eed | 4778 | globals->plt0_entry = elfNN_aarch64_small_plt0_bti_entry; |
37c18eed SD |
4779 | |
4780 | /* Only in ET_EXEC we need PLTn with BTI. */ | |
4781 | if (bfd_link_pde (link_info)) | |
4782 | { | |
4783 | globals->plt_entry_size = PLT_BTI_SMALL_ENTRY_SIZE; | |
4784 | globals->plt_entry = elfNN_aarch64_small_plt_bti_entry; | |
4785 | } | |
4786 | } | |
1dbade74 SD |
4787 | else if (plt_type == PLT_PAC) |
4788 | { | |
1dbade74 SD |
4789 | globals->plt_entry_size = PLT_PAC_SMALL_ENTRY_SIZE; |
4790 | globals->plt_entry = elfNN_aarch64_small_plt_pac_entry; | |
4791 | } | |
37c18eed SD |
4792 | } |
4793 | ||
a06ea964 NC |
4794 | /* Set option values needed during linking. */ |
4795 | void | |
cec5225b | 4796 | bfd_elfNN_aarch64_set_options (struct bfd *output_bfd, |
a06ea964 NC |
4797 | struct bfd_link_info *link_info, |
4798 | int no_enum_warn, | |
68fcca92 | 4799 | int no_wchar_warn, int pic_veneer, |
4106101c | 4800 | int fix_erratum_835769, |
739b5c9c | 4801 | erratum_84319_opts fix_erratum_843419, |
37c18eed SD |
4802 | int no_apply_dynamic_relocs, |
4803 | aarch64_bti_pac_info bp_info) | |
a06ea964 | 4804 | { |
cec5225b | 4805 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 4806 | |
cec5225b | 4807 | globals = elf_aarch64_hash_table (link_info); |
a06ea964 | 4808 | globals->pic_veneer = pic_veneer; |
68fcca92 | 4809 | globals->fix_erratum_835769 = fix_erratum_835769; |
739b5c9c TC |
4810 | /* If the default options are used, then ERRAT_ADR will be set by default |
4811 | which will enable the ADRP->ADR workaround for the erratum 843419 | |
4812 | workaround. */ | |
4106101c | 4813 | globals->fix_erratum_843419 = fix_erratum_843419; |
1f56df9d | 4814 | globals->no_apply_dynamic_relocs = no_apply_dynamic_relocs; |
a06ea964 NC |
4815 | |
4816 | BFD_ASSERT (is_aarch64_elf (output_bfd)); | |
4817 | elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn; | |
4818 | elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn; | |
37c18eed SD |
4819 | |
4820 | switch (bp_info.bti_type) | |
4821 | { | |
4822 | case BTI_WARN: | |
4823 | elf_aarch64_tdata (output_bfd)->no_bti_warn = 0; | |
4824 | elf_aarch64_tdata (output_bfd)->gnu_and_prop | |
4825 | |= GNU_PROPERTY_AARCH64_FEATURE_1_BTI; | |
4826 | break; | |
4827 | ||
4828 | default: | |
4829 | break; | |
4830 | } | |
4831 | elf_aarch64_tdata (output_bfd)->plt_type = bp_info.plt_type; | |
4832 | setup_plt_values (link_info, bp_info.plt_type); | |
a06ea964 NC |
4833 | } |
4834 | ||
a06ea964 NC |
4835 | static bfd_vma |
4836 | aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h, | |
cec5225b | 4837 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
4838 | *globals, struct bfd_link_info *info, |
4839 | bfd_vma value, bfd *output_bfd, | |
4840 | bfd_boolean *unresolved_reloc_p) | |
4841 | { | |
4842 | bfd_vma off = (bfd_vma) - 1; | |
4843 | asection *basegot = globals->root.sgot; | |
4844 | bfd_boolean dyn = globals->root.dynamic_sections_created; | |
4845 | ||
4846 | if (h != NULL) | |
4847 | { | |
a6bb11b2 | 4848 | BFD_ASSERT (basegot != NULL); |
a06ea964 NC |
4849 | off = h->got.offset; |
4850 | BFD_ASSERT (off != (bfd_vma) - 1); | |
0e1862bb L |
4851 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h) |
4852 | || (bfd_link_pic (info) | |
a06ea964 NC |
4853 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
4854 | || (ELF_ST_VISIBILITY (h->other) | |
4855 | && h->root.type == bfd_link_hash_undefweak)) | |
4856 | { | |
4857 | /* This is actually a static link, or it is a -Bsymbolic link | |
4858 | and the symbol is defined locally. We must initialize this | |
4859 | entry in the global offset table. Since the offset must | |
a6bb11b2 YZ |
4860 | always be a multiple of 8 (4 in the case of ILP32), we use |
4861 | the least significant bit to record whether we have | |
4862 | initialized it already. | |
a06ea964 NC |
4863 | When doing a dynamic link, we create a .rel(a).got relocation |
4864 | entry to initialize the value. This is done in the | |
4865 | finish_dynamic_symbol routine. */ | |
4866 | if ((off & 1) != 0) | |
4867 | off &= ~1; | |
4868 | else | |
4869 | { | |
cec5225b | 4870 | bfd_put_NN (output_bfd, value, basegot->contents + off); |
a06ea964 NC |
4871 | h->got.offset |= 1; |
4872 | } | |
4873 | } | |
4874 | else | |
4875 | *unresolved_reloc_p = FALSE; | |
4876 | ||
4877 | off = off + basegot->output_section->vma + basegot->output_offset; | |
4878 | } | |
4879 | ||
4880 | return off; | |
4881 | } | |
4882 | ||
4883 | /* Change R_TYPE to a more efficient access model where possible, | |
4884 | return the new reloc type. */ | |
4885 | ||
a6bb11b2 YZ |
4886 | static bfd_reloc_code_real_type |
4887 | aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type, | |
a06ea964 NC |
4888 | struct elf_link_hash_entry *h) |
4889 | { | |
4890 | bfd_boolean is_local = h == NULL; | |
a6bb11b2 | 4891 | |
a06ea964 NC |
4892 | switch (r_type) |
4893 | { | |
a6bb11b2 | 4894 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 4895 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a6bb11b2 YZ |
4896 | return (is_local |
4897 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4898 | : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21); | |
4899 | ||
389b8029 MS |
4900 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
4901 | return (is_local | |
4902 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4903 | : r_type); | |
4904 | ||
1ada945d MS |
4905 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
4906 | return (is_local | |
4907 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4908 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4909 | ||
0484b454 RL |
4910 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
4911 | return (is_local | |
4912 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4913 | : BFD_RELOC_AARCH64_NONE); | |
4914 | ||
4915 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
4916 | return (is_local | |
4917 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC | |
4918 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC); | |
4919 | ||
4920 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
4921 | return (is_local | |
4922 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 | |
4923 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1); | |
4924 | ||
a6bb11b2 | 4925 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
ce336788 | 4926 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 YZ |
4927 | return (is_local |
4928 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4929 | : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC); | |
4930 | ||
4931 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: | |
4932 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type; | |
4933 | ||
4934 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
4935 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type; | |
4936 | ||
043bf05a MS |
4937 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
4938 | return r_type; | |
4939 | ||
3c12b054 MS |
4940 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
4941 | return (is_local | |
4942 | ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 | |
4943 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4944 | ||
0484b454 | 4945 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
f955cccf | 4946 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 4947 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a06ea964 | 4948 | /* Instructions with these relocations will become NOPs. */ |
a6bb11b2 YZ |
4949 | return BFD_RELOC_AARCH64_NONE; |
4950 | ||
259364ad JW |
4951 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
4952 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: | |
4953 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: | |
4954 | return is_local ? BFD_RELOC_AARCH64_NONE : r_type; | |
4955 | ||
ac734732 RL |
4956 | #if ARCH_SIZE == 64 |
4957 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: | |
4958 | return is_local | |
4959 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC | |
4960 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC; | |
4961 | ||
4962 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: | |
4963 | return is_local | |
4964 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 | |
4965 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1; | |
4966 | #endif | |
4967 | ||
a6bb11b2 YZ |
4968 | default: |
4969 | break; | |
a06ea964 NC |
4970 | } |
4971 | ||
4972 | return r_type; | |
4973 | } | |
4974 | ||
4975 | static unsigned int | |
a6bb11b2 | 4976 | aarch64_reloc_got_type (bfd_reloc_code_real_type r_type) |
a06ea964 NC |
4977 | { |
4978 | switch (r_type) | |
4979 | { | |
a6bb11b2 YZ |
4980 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
4981 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 4982 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 4983 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 4984 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 4985 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 4986 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 4987 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 4988 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
a06ea964 NC |
4989 | return GOT_NORMAL; |
4990 | ||
ce336788 | 4991 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 4992 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 4993 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 4994 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 4995 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
73f925cc | 4996 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 4997 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 4998 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
4999 | return GOT_TLS_GD; |
5000 | ||
0484b454 | 5001 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
f955cccf | 5002 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 5003 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 5004 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 5005 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a6bb11b2 | 5006 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
f955cccf | 5007 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
1ada945d | 5008 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
5009 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
5010 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
5011 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a06ea964 NC |
5012 | return GOT_TLSDESC_GD; |
5013 | ||
a6bb11b2 | 5014 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 5015 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 5016 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 5017 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
5018 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
5019 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
a06ea964 NC |
5020 | return GOT_TLS_IE; |
5021 | ||
a6bb11b2 YZ |
5022 | default: |
5023 | break; | |
a06ea964 NC |
5024 | } |
5025 | return GOT_UNKNOWN; | |
5026 | } | |
5027 | ||
5028 | static bfd_boolean | |
5029 | aarch64_can_relax_tls (bfd *input_bfd, | |
5030 | struct bfd_link_info *info, | |
a6bb11b2 | 5031 | bfd_reloc_code_real_type r_type, |
a06ea964 NC |
5032 | struct elf_link_hash_entry *h, |
5033 | unsigned long r_symndx) | |
5034 | { | |
5035 | unsigned int symbol_got_type; | |
5036 | unsigned int reloc_got_type; | |
5037 | ||
9331eea1 | 5038 | if (! IS_AARCH64_TLS_RELAX_RELOC (r_type)) |
a06ea964 NC |
5039 | return FALSE; |
5040 | ||
cec5225b | 5041 | symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx); |
a06ea964 NC |
5042 | reloc_got_type = aarch64_reloc_got_type (r_type); |
5043 | ||
5044 | if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type)) | |
5045 | return TRUE; | |
5046 | ||
6dda7875 | 5047 | if (!bfd_link_executable (info)) |
a06ea964 NC |
5048 | return FALSE; |
5049 | ||
5050 | if (h && h->root.type == bfd_link_hash_undefweak) | |
5051 | return FALSE; | |
5052 | ||
5053 | return TRUE; | |
5054 | } | |
5055 | ||
a6bb11b2 YZ |
5056 | /* Given the relocation code R_TYPE, return the relaxed bfd reloc |
5057 | enumerator. */ | |
5058 | ||
5059 | static bfd_reloc_code_real_type | |
a06ea964 NC |
5060 | aarch64_tls_transition (bfd *input_bfd, |
5061 | struct bfd_link_info *info, | |
5062 | unsigned int r_type, | |
5063 | struct elf_link_hash_entry *h, | |
5064 | unsigned long r_symndx) | |
5065 | { | |
a6bb11b2 | 5066 | bfd_reloc_code_real_type bfd_r_type |
0aa13fee | 5067 | = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
a06ea964 | 5068 | |
a6bb11b2 YZ |
5069 | if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx)) |
5070 | return bfd_r_type; | |
5071 | ||
5072 | return aarch64_tls_transition_without_check (bfd_r_type, h); | |
a06ea964 NC |
5073 | } |
5074 | ||
5075 | /* Return the base VMA address which should be subtracted from real addresses | |
a6bb11b2 | 5076 | when resolving R_AARCH64_TLS_DTPREL relocation. */ |
a06ea964 NC |
5077 | |
5078 | static bfd_vma | |
5079 | dtpoff_base (struct bfd_link_info *info) | |
5080 | { | |
5081 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
5082 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); | |
5083 | return elf_hash_table (info)->tls_sec->vma; | |
5084 | } | |
5085 | ||
a06ea964 NC |
5086 | /* Return the base VMA address which should be subtracted from real addresses |
5087 | when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */ | |
5088 | ||
5089 | static bfd_vma | |
5090 | tpoff_base (struct bfd_link_info *info) | |
5091 | { | |
5092 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
5093 | ||
5094 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
ac21917f | 5095 | BFD_ASSERT (htab->tls_sec != NULL); |
a06ea964 NC |
5096 | |
5097 | bfd_vma base = align_power ((bfd_vma) TCB_SIZE, | |
5098 | htab->tls_sec->alignment_power); | |
5099 | return htab->tls_sec->vma - base; | |
5100 | } | |
5101 | ||
5102 | static bfd_vma * | |
5103 | symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5104 | unsigned long r_symndx) | |
5105 | { | |
5106 | /* Calculate the address of the GOT entry for symbol | |
5107 | referred to in h. */ | |
5108 | if (h != NULL) | |
5109 | return &h->got.offset; | |
5110 | else | |
5111 | { | |
5112 | /* local symbol */ | |
5113 | struct elf_aarch64_local_symbol *l; | |
5114 | ||
cec5225b | 5115 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
5116 | return &l[r_symndx].got_offset; |
5117 | } | |
5118 | } | |
5119 | ||
5120 | static void | |
5121 | symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5122 | unsigned long r_symndx) | |
5123 | { | |
5124 | bfd_vma *p; | |
5125 | p = symbol_got_offset_ref (input_bfd, h, r_symndx); | |
5126 | *p |= 1; | |
5127 | } | |
5128 | ||
5129 | static int | |
5130 | symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5131 | unsigned long r_symndx) | |
5132 | { | |
5133 | bfd_vma value; | |
5134 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
5135 | return value & 1; | |
5136 | } | |
5137 | ||
5138 | static bfd_vma | |
5139 | symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5140 | unsigned long r_symndx) | |
5141 | { | |
5142 | bfd_vma value; | |
5143 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
5144 | value &= ~1; | |
5145 | return value; | |
5146 | } | |
5147 | ||
5148 | static bfd_vma * | |
5149 | symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5150 | unsigned long r_symndx) | |
5151 | { | |
5152 | /* Calculate the address of the GOT entry for symbol | |
5153 | referred to in h. */ | |
5154 | if (h != NULL) | |
5155 | { | |
cec5225b YZ |
5156 | struct elf_aarch64_link_hash_entry *eh; |
5157 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
5158 | return &eh->tlsdesc_got_jump_table_offset; |
5159 | } | |
5160 | else | |
5161 | { | |
5162 | /* local symbol */ | |
5163 | struct elf_aarch64_local_symbol *l; | |
5164 | ||
cec5225b | 5165 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
5166 | return &l[r_symndx].tlsdesc_got_jump_table_offset; |
5167 | } | |
5168 | } | |
5169 | ||
5170 | static void | |
5171 | symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5172 | unsigned long r_symndx) | |
5173 | { | |
5174 | bfd_vma *p; | |
5175 | p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
5176 | *p |= 1; | |
5177 | } | |
5178 | ||
5179 | static int | |
5180 | symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd, | |
5181 | struct elf_link_hash_entry *h, | |
5182 | unsigned long r_symndx) | |
5183 | { | |
5184 | bfd_vma value; | |
5185 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
5186 | return value & 1; | |
5187 | } | |
5188 | ||
5189 | static bfd_vma | |
5190 | symbol_tlsdesc_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5191 | unsigned long r_symndx) | |
5192 | { | |
5193 | bfd_vma value; | |
5194 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
5195 | value &= ~1; | |
5196 | return value; | |
5197 | } | |
5198 | ||
68fcca92 JW |
5199 | /* Data for make_branch_to_erratum_835769_stub(). */ |
5200 | ||
5201 | struct erratum_835769_branch_to_stub_data | |
5202 | { | |
4106101c | 5203 | struct bfd_link_info *info; |
68fcca92 JW |
5204 | asection *output_section; |
5205 | bfd_byte *contents; | |
5206 | }; | |
5207 | ||
5208 | /* Helper to insert branches to erratum 835769 stubs in the right | |
5209 | places for a particular section. */ | |
5210 | ||
5211 | static bfd_boolean | |
5212 | make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry, | |
5213 | void *in_arg) | |
5214 | { | |
5215 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
5216 | struct erratum_835769_branch_to_stub_data *data; | |
5217 | bfd_byte *contents; | |
5218 | unsigned long branch_insn = 0; | |
5219 | bfd_vma veneered_insn_loc, veneer_entry_loc; | |
5220 | bfd_signed_vma branch_offset; | |
5221 | unsigned int target; | |
5222 | bfd *abfd; | |
5223 | ||
5224 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
5225 | data = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
5226 | ||
5227 | if (stub_entry->target_section != data->output_section | |
5228 | || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer) | |
5229 | return TRUE; | |
5230 | ||
5231 | contents = data->contents; | |
5232 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
5233 | + stub_entry->target_section->output_offset | |
5234 | + stub_entry->target_value; | |
5235 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
5236 | + stub_entry->stub_sec->output_offset | |
5237 | + stub_entry->stub_offset; | |
5238 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
5239 | ||
5240 | abfd = stub_entry->target_section->owner; | |
5241 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4eca0228 | 5242 | _bfd_error_handler |
90b6238f | 5243 | (_("%pB: error: erratum 835769 stub out " |
4eca0228 | 5244 | "of range (input file too large)"), abfd); |
68fcca92 JW |
5245 | |
5246 | target = stub_entry->target_value; | |
5247 | branch_insn = 0x14000000; | |
5248 | branch_offset >>= 2; | |
5249 | branch_offset &= 0x3ffffff; | |
5250 | branch_insn |= branch_offset; | |
5251 | bfd_putl32 (branch_insn, &contents[target]); | |
5252 | ||
5253 | return TRUE; | |
5254 | } | |
5255 | ||
4106101c MS |
5256 | |
5257 | static bfd_boolean | |
5258 | _bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry, | |
5259 | void *in_arg) | |
5260 | { | |
5261 | struct elf_aarch64_stub_hash_entry *stub_entry | |
5262 | = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
5263 | struct erratum_835769_branch_to_stub_data *data | |
5264 | = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
5265 | struct bfd_link_info *info; | |
5266 | struct elf_aarch64_link_hash_table *htab; | |
5267 | bfd_byte *contents; | |
5268 | asection *section; | |
5269 | bfd *abfd; | |
5270 | bfd_vma place; | |
5271 | uint32_t insn; | |
5272 | ||
5273 | info = data->info; | |
5274 | contents = data->contents; | |
5275 | section = data->output_section; | |
5276 | ||
5277 | htab = elf_aarch64_hash_table (info); | |
5278 | ||
5279 | if (stub_entry->target_section != section | |
5280 | || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer) | |
5281 | return TRUE; | |
5282 | ||
739b5c9c TC |
5283 | BFD_ASSERT (((htab->fix_erratum_843419 & ERRAT_ADRP) && stub_entry->stub_sec) |
5284 | || (htab->fix_erratum_843419 & ERRAT_ADR)); | |
5285 | ||
5286 | /* Only update the stub section if we have one. We should always have one if | |
5287 | we're allowed to use the ADRP errata workaround, otherwise it is not | |
5288 | required. */ | |
5289 | if (stub_entry->stub_sec) | |
5290 | { | |
5291 | insn = bfd_getl32 (contents + stub_entry->target_value); | |
5292 | bfd_putl32 (insn, | |
5293 | stub_entry->stub_sec->contents + stub_entry->stub_offset); | |
5294 | } | |
4106101c MS |
5295 | |
5296 | place = (section->output_section->vma + section->output_offset | |
5297 | + stub_entry->adrp_offset); | |
5298 | insn = bfd_getl32 (contents + stub_entry->adrp_offset); | |
5299 | ||
9fca35fc | 5300 | if (!_bfd_aarch64_adrp_p (insn)) |
4106101c MS |
5301 | abort (); |
5302 | ||
5303 | bfd_signed_vma imm = | |
5304 | (_bfd_aarch64_sign_extend | |
5305 | ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33) | |
5306 | - (place & 0xfff)); | |
5307 | ||
739b5c9c | 5308 | if ((htab->fix_erratum_843419 & ERRAT_ADR) |
4106101c MS |
5309 | && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM)) |
5310 | { | |
5311 | insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm) | |
5312 | | AARCH64_RT (insn)); | |
5313 | bfd_putl32 (insn, contents + stub_entry->adrp_offset); | |
739b5c9c TC |
5314 | /* Stub is not needed, don't map it out. */ |
5315 | stub_entry->stub_type = aarch64_stub_none; | |
4106101c | 5316 | } |
739b5c9c | 5317 | else if (htab->fix_erratum_843419 & ERRAT_ADRP) |
4106101c MS |
5318 | { |
5319 | bfd_vma veneered_insn_loc; | |
5320 | bfd_vma veneer_entry_loc; | |
5321 | bfd_signed_vma branch_offset; | |
5322 | uint32_t branch_insn; | |
5323 | ||
5324 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
5325 | + stub_entry->target_section->output_offset | |
5326 | + stub_entry->target_value; | |
5327 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
5328 | + stub_entry->stub_sec->output_offset | |
5329 | + stub_entry->stub_offset; | |
5330 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
5331 | ||
5332 | abfd = stub_entry->target_section->owner; | |
5333 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4eca0228 | 5334 | _bfd_error_handler |
90b6238f | 5335 | (_("%pB: error: erratum 843419 stub out " |
4106101c MS |
5336 | "of range (input file too large)"), abfd); |
5337 | ||
5338 | branch_insn = 0x14000000; | |
5339 | branch_offset >>= 2; | |
5340 | branch_offset &= 0x3ffffff; | |
5341 | branch_insn |= branch_offset; | |
5342 | bfd_putl32 (branch_insn, contents + stub_entry->target_value); | |
5343 | } | |
739b5c9c TC |
5344 | else |
5345 | { | |
5346 | abfd = stub_entry->target_section->owner; | |
5347 | _bfd_error_handler | |
64672071 | 5348 | (_("%pB: error: erratum 843419 immediate 0x%" BFD_VMA_FMT "x " |
739b5c9c TC |
5349 | "out of range for ADR (input file too large) and " |
5350 | "--fix-cortex-a53-843419=adr used. Run the linker with " | |
5351 | "--fix-cortex-a53-843419=full instead"), abfd, imm); | |
5352 | bfd_set_error (bfd_error_bad_value); | |
5353 | /* This function is called inside a hashtable traversal and the error | |
5354 | handlers called above turn into non-fatal errors. Which means this | |
5355 | case ld returns an exit code 0 and also produces a broken object file. | |
5356 | To prevent this, issue a hard abort. */ | |
5357 | BFD_FAIL (); | |
5358 | } | |
4106101c MS |
5359 | return TRUE; |
5360 | } | |
5361 | ||
5362 | ||
68fcca92 JW |
5363 | static bfd_boolean |
5364 | elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, | |
5365 | struct bfd_link_info *link_info, | |
5366 | asection *sec, | |
5367 | bfd_byte *contents) | |
5368 | ||
5369 | { | |
5370 | struct elf_aarch64_link_hash_table *globals = | |
f872121a | 5371 | elf_aarch64_hash_table (link_info); |
68fcca92 JW |
5372 | |
5373 | if (globals == NULL) | |
5374 | return FALSE; | |
5375 | ||
5376 | /* Fix code to point to erratum 835769 stubs. */ | |
5377 | if (globals->fix_erratum_835769) | |
5378 | { | |
5379 | struct erratum_835769_branch_to_stub_data data; | |
5380 | ||
4106101c | 5381 | data.info = link_info; |
68fcca92 JW |
5382 | data.output_section = sec; |
5383 | data.contents = contents; | |
5384 | bfd_hash_traverse (&globals->stub_hash_table, | |
5385 | make_branch_to_erratum_835769_stub, &data); | |
5386 | } | |
5387 | ||
4106101c MS |
5388 | if (globals->fix_erratum_843419) |
5389 | { | |
5390 | struct erratum_835769_branch_to_stub_data data; | |
5391 | ||
5392 | data.info = link_info; | |
5393 | data.output_section = sec; | |
5394 | data.contents = contents; | |
5395 | bfd_hash_traverse (&globals->stub_hash_table, | |
5396 | _bfd_aarch64_erratum_843419_branch_to_stub, &data); | |
5397 | } | |
5398 | ||
68fcca92 JW |
5399 | return FALSE; |
5400 | } | |
5401 | ||
2aff25ba JW |
5402 | /* Return TRUE if RELOC is a relocation against the base of GOT table. */ |
5403 | ||
5404 | static bfd_boolean | |
5405 | aarch64_relocation_aginst_gp_p (bfd_reloc_code_real_type reloc) | |
5406 | { | |
5407 | return (reloc == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14 | |
5408 | || reloc == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 | |
5409 | || reloc == BFD_RELOC_AARCH64_LD64_GOTOFF_LO15 | |
5410 | || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC | |
5411 | || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G1); | |
5412 | } | |
5413 | ||
4e7fbb34 JW |
5414 | /* Perform a relocation as part of a final link. The input relocation type |
5415 | should be TLS relaxed. */ | |
5416 | ||
a06ea964 | 5417 | static bfd_reloc_status_type |
cec5225b | 5418 | elfNN_aarch64_final_link_relocate (reloc_howto_type *howto, |
a06ea964 NC |
5419 | bfd *input_bfd, |
5420 | bfd *output_bfd, | |
5421 | asection *input_section, | |
5422 | bfd_byte *contents, | |
5423 | Elf_Internal_Rela *rel, | |
5424 | bfd_vma value, | |
5425 | struct bfd_link_info *info, | |
5426 | asection *sym_sec, | |
5427 | struct elf_link_hash_entry *h, | |
5428 | bfd_boolean *unresolved_reloc_p, | |
5429 | bfd_boolean save_addend, | |
1419bbe5 WN |
5430 | bfd_vma *saved_addend, |
5431 | Elf_Internal_Sym *sym) | |
a06ea964 | 5432 | { |
1419bbe5 | 5433 | Elf_Internal_Shdr *symtab_hdr; |
a06ea964 | 5434 | unsigned int r_type = howto->type; |
a6bb11b2 YZ |
5435 | bfd_reloc_code_real_type bfd_r_type |
5436 | = elfNN_aarch64_bfd_reloc_from_howto (howto); | |
a06ea964 NC |
5437 | unsigned long r_symndx; |
5438 | bfd_byte *hit_data = contents + rel->r_offset; | |
96d01d93 | 5439 | bfd_vma place, off, got_entry_addr = 0; |
a06ea964 | 5440 | bfd_signed_vma signed_addend; |
cec5225b | 5441 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 5442 | bfd_boolean weak_undef_p; |
ff07562f | 5443 | bfd_boolean relative_reloc; |
b53b1bed | 5444 | asection *base_got; |
ff07562f | 5445 | bfd_vma orig_value = value; |
ddb7fd0f | 5446 | bfd_boolean resolved_to_zero; |
0c1ded8d | 5447 | bfd_boolean abs_symbol_p; |
7e057737 | 5448 | bfd_boolean via_plt_p; |
a06ea964 | 5449 | |
cec5225b | 5450 | globals = elf_aarch64_hash_table (info); |
a06ea964 | 5451 | |
1419bbe5 WN |
5452 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5453 | ||
a06ea964 NC |
5454 | BFD_ASSERT (is_aarch64_elf (input_bfd)); |
5455 | ||
cec5225b | 5456 | r_symndx = ELFNN_R_SYM (rel->r_info); |
a06ea964 | 5457 | |
a06ea964 NC |
5458 | place = input_section->output_section->vma |
5459 | + input_section->output_offset + rel->r_offset; | |
5460 | ||
5461 | /* Get addend, accumulating the addend for consecutive relocs | |
5462 | which refer to the same offset. */ | |
5463 | signed_addend = saved_addend ? *saved_addend : 0; | |
5464 | signed_addend += rel->r_addend; | |
5465 | ||
5466 | weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak | |
5467 | : bfd_is_und_section (sym_sec)); | |
c691de6a | 5468 | abs_symbol_p = h != NULL && bfd_is_abs_symbol (&h->root); |
0c1ded8d | 5469 | |
7e057737 SP |
5470 | via_plt_p = (globals->root.splt != NULL && h != NULL |
5471 | && h->plt.offset != (bfd_vma) - 1); | |
a6bb11b2 | 5472 | |
1419bbe5 WN |
5473 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
5474 | it here if it is defined in a non-shared object. */ | |
5475 | if (h != NULL | |
5476 | && h->type == STT_GNU_IFUNC | |
5477 | && h->def_regular) | |
5478 | { | |
5479 | asection *plt; | |
5480 | const char *name; | |
99ad26cb | 5481 | bfd_vma addend = 0; |
1419bbe5 | 5482 | |
545bc2b3 SN |
5483 | if ((input_section->flags & SEC_ALLOC) == 0) |
5484 | { | |
f657f8c4 NC |
5485 | /* If this is a SHT_NOTE section without SHF_ALLOC, treat |
5486 | STT_GNU_IFUNC symbol as STT_FUNC. */ | |
5487 | if (elf_section_type (input_section) == SHT_NOTE) | |
5488 | goto skip_ifunc; | |
5489 | ||
545bc2b3 SN |
5490 | /* Dynamic relocs are not propagated for SEC_DEBUGGING |
5491 | sections because such sections are not SEC_ALLOC and | |
5492 | thus ld.so will not process them. */ | |
5493 | if ((input_section->flags & SEC_DEBUGGING) != 0) | |
5494 | return bfd_reloc_ok; | |
5495 | ||
5496 | if (h->root.root.string) | |
5497 | name = h->root.root.string; | |
5498 | else | |
5499 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, NULL); | |
5500 | _bfd_error_handler | |
5501 | /* xgettext:c-format */ | |
2dcf00ce AM |
5502 | (_("%pB(%pA+%#" PRIx64 "): " |
5503 | "unresolvable %s relocation against symbol `%s'"), | |
5504 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
5505 | howto->name, name); | |
545bc2b3 | 5506 | bfd_set_error (bfd_error_bad_value); |
1d75a8e2 | 5507 | return bfd_reloc_notsupported; |
545bc2b3 SN |
5508 | } |
5509 | else if (h->plt.offset == (bfd_vma) -1) | |
5510 | goto bad_ifunc_reloc; | |
1419bbe5 WN |
5511 | |
5512 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
5513 | plt = globals->root.splt ? globals->root.splt : globals->root.iplt; | |
5514 | value = (plt->output_section->vma + plt->output_offset + h->plt.offset); | |
5515 | ||
5516 | switch (bfd_r_type) | |
5517 | { | |
5518 | default: | |
dc1e8a47 | 5519 | bad_ifunc_reloc: |
1419bbe5 WN |
5520 | if (h->root.root.string) |
5521 | name = h->root.root.string; | |
5522 | else | |
5523 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
5524 | NULL); | |
4eca0228 | 5525 | _bfd_error_handler |
695344c0 | 5526 | /* xgettext:c-format */ |
871b3ab2 | 5527 | (_("%pB: relocation %s against STT_GNU_IFUNC " |
1419bbe5 WN |
5528 | "symbol `%s' isn't handled by %s"), input_bfd, |
5529 | howto->name, name, __FUNCTION__); | |
5530 | bfd_set_error (bfd_error_bad_value); | |
1d75a8e2 | 5531 | return bfd_reloc_notsupported; |
1419bbe5 WN |
5532 | |
5533 | case BFD_RELOC_AARCH64_NN: | |
5534 | if (rel->r_addend != 0) | |
5535 | { | |
5536 | if (h->root.root.string) | |
5537 | name = h->root.root.string; | |
5538 | else | |
5539 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
5540 | sym, NULL); | |
4eca0228 | 5541 | _bfd_error_handler |
695344c0 | 5542 | /* xgettext:c-format */ |
871b3ab2 | 5543 | (_("%pB: relocation %s against STT_GNU_IFUNC " |
2dcf00ce AM |
5544 | "symbol `%s' has non-zero addend: %" PRId64), |
5545 | input_bfd, howto->name, name, (int64_t) rel->r_addend); | |
1419bbe5 | 5546 | bfd_set_error (bfd_error_bad_value); |
1d75a8e2 | 5547 | return bfd_reloc_notsupported; |
1419bbe5 WN |
5548 | } |
5549 | ||
5550 | /* Generate dynamic relocation only when there is a | |
5551 | non-GOT reference in a shared object. */ | |
0e1862bb | 5552 | if (bfd_link_pic (info) && h->non_got_ref) |
1419bbe5 WN |
5553 | { |
5554 | Elf_Internal_Rela outrel; | |
5555 | asection *sreloc; | |
5556 | ||
5557 | /* Need a dynamic relocation to get the real function | |
5558 | address. */ | |
5559 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
5560 | info, | |
5561 | input_section, | |
5562 | rel->r_offset); | |
5563 | if (outrel.r_offset == (bfd_vma) -1 | |
5564 | || outrel.r_offset == (bfd_vma) -2) | |
5565 | abort (); | |
5566 | ||
5567 | outrel.r_offset += (input_section->output_section->vma | |
5568 | + input_section->output_offset); | |
5569 | ||
5570 | if (h->dynindx == -1 | |
5571 | || h->forced_local | |
0e1862bb | 5572 | || bfd_link_executable (info)) |
1419bbe5 WN |
5573 | { |
5574 | /* This symbol is resolved locally. */ | |
5575 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
5576 | outrel.r_addend = (h->root.u.def.value | |
5577 | + h->root.u.def.section->output_section->vma | |
5578 | + h->root.u.def.section->output_offset); | |
5579 | } | |
5580 | else | |
5581 | { | |
5582 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); | |
5583 | outrel.r_addend = 0; | |
5584 | } | |
5585 | ||
5586 | sreloc = globals->root.irelifunc; | |
5587 | elf_append_rela (output_bfd, sreloc, &outrel); | |
5588 | ||
5589 | /* If this reloc is against an external symbol, we | |
5590 | do not want to fiddle with the addend. Otherwise, | |
5591 | we need to include the symbol value so that it | |
5592 | becomes an addend for the dynamic reloc. For an | |
5593 | internal symbol, we have updated addend. */ | |
5594 | return bfd_reloc_ok; | |
5595 | } | |
5596 | /* FALLTHROUGH */ | |
1419bbe5 | 5597 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 5598 | case BFD_RELOC_AARCH64_JUMP26: |
652afeef TC |
5599 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
5600 | place, value, | |
1419bbe5 WN |
5601 | signed_addend, |
5602 | weak_undef_p); | |
5603 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, | |
5604 | howto, value); | |
1419bbe5 WN |
5605 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
5606 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 5607 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 5608 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 5609 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
dc8008f5 | 5610 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 5611 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
a2e1db00 | 5612 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
ce336788 | 5613 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
1419bbe5 WN |
5614 | base_got = globals->root.sgot; |
5615 | off = h->got.offset; | |
5616 | ||
5617 | if (base_got == NULL) | |
5618 | abort (); | |
5619 | ||
5620 | if (off == (bfd_vma) -1) | |
5621 | { | |
5622 | bfd_vma plt_index; | |
5623 | ||
5624 | /* We can't use h->got.offset here to save state, or | |
5625 | even just remember the offset, as finish_dynamic_symbol | |
5626 | would use that as offset into .got. */ | |
5627 | ||
5628 | if (globals->root.splt != NULL) | |
5629 | { | |
b1ee0cc4 WN |
5630 | plt_index = ((h->plt.offset - globals->plt_header_size) / |
5631 | globals->plt_entry_size); | |
1419bbe5 WN |
5632 | off = (plt_index + 3) * GOT_ENTRY_SIZE; |
5633 | base_got = globals->root.sgotplt; | |
5634 | } | |
5635 | else | |
5636 | { | |
5637 | plt_index = h->plt.offset / globals->plt_entry_size; | |
5638 | off = plt_index * GOT_ENTRY_SIZE; | |
5639 | base_got = globals->root.igotplt; | |
5640 | } | |
5641 | ||
5642 | if (h->dynindx == -1 | |
5643 | || h->forced_local | |
5644 | || info->symbolic) | |
5645 | { | |
5646 | /* This references the local definition. We must | |
5647 | initialize this entry in the global offset table. | |
5648 | Since the offset must always be a multiple of 8, | |
5649 | we use the least significant bit to record | |
5650 | whether we have initialized it already. | |
5651 | ||
5652 | When doing a dynamic link, we create a .rela.got | |
5653 | relocation entry to initialize the value. This | |
5654 | is done in the finish_dynamic_symbol routine. */ | |
5655 | if ((off & 1) != 0) | |
5656 | off &= ~1; | |
5657 | else | |
5658 | { | |
5659 | bfd_put_NN (output_bfd, value, | |
5660 | base_got->contents + off); | |
5661 | /* Note that this is harmless as -1 | 1 still is -1. */ | |
5662 | h->got.offset |= 1; | |
5663 | } | |
5664 | } | |
5665 | value = (base_got->output_section->vma | |
5666 | + base_got->output_offset + off); | |
5667 | } | |
5668 | else | |
5669 | value = aarch64_calculate_got_entry_vma (h, globals, info, | |
5670 | value, output_bfd, | |
5671 | unresolved_reloc_p); | |
a0becb89 | 5672 | |
2aff25ba JW |
5673 | if (aarch64_relocation_aginst_gp_p (bfd_r_type)) |
5674 | addend = (globals->root.sgot->output_section->vma | |
5675 | + globals->root.sgot->output_offset); | |
a0becb89 | 5676 | |
652afeef TC |
5677 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
5678 | place, value, | |
99ad26cb | 5679 | addend, weak_undef_p); |
1419bbe5 | 5680 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value); |
1419bbe5 | 5681 | case BFD_RELOC_AARCH64_ADD_LO12: |
ce336788 | 5682 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: |
1419bbe5 WN |
5683 | break; |
5684 | } | |
5685 | } | |
5686 | ||
f657f8c4 | 5687 | skip_ifunc: |
ddb7fd0f L |
5688 | resolved_to_zero = (h != NULL |
5689 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
5690 | ||
a6bb11b2 | 5691 | switch (bfd_r_type) |
a06ea964 | 5692 | { |
a6bb11b2 | 5693 | case BFD_RELOC_AARCH64_NONE: |
0484b454 | 5694 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
a6bb11b2 | 5695 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
0484b454 | 5696 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
a06ea964 NC |
5697 | *unresolved_reloc_p = FALSE; |
5698 | return bfd_reloc_ok; | |
5699 | ||
a6bb11b2 | 5700 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
5701 | |
5702 | /* When generating a shared object or relocatable executable, these | |
07d6d2b8 AM |
5703 | relocations are copied into the output file to be resolved at |
5704 | run time. */ | |
6353d82b JW |
5705 | if (((bfd_link_pic (info) |
5706 | || globals->root.is_relocatable_executable) | |
5707 | && (input_section->flags & SEC_ALLOC) | |
5708 | && (h == NULL | |
ddb7fd0f L |
5709 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
5710 | && !resolved_to_zero) | |
6353d82b JW |
5711 | || h->root.type != bfd_link_hash_undefweak)) |
5712 | /* Or we are creating an executable, we may need to keep relocations | |
5713 | for symbols satisfied by a dynamic library if we manage to avoid | |
5714 | copy relocs for the symbol. */ | |
5715 | || (ELIMINATE_COPY_RELOCS | |
5716 | && !bfd_link_pic (info) | |
5717 | && h != NULL | |
5718 | && (input_section->flags & SEC_ALLOC) | |
5719 | && h->dynindx != -1 | |
5720 | && !h->non_got_ref | |
5721 | && ((h->def_dynamic | |
5722 | && !h->def_regular) | |
5723 | || h->root.type == bfd_link_hash_undefweak | |
5724 | || h->root.type == bfd_link_hash_undefined))) | |
a06ea964 NC |
5725 | { |
5726 | Elf_Internal_Rela outrel; | |
5727 | bfd_byte *loc; | |
5728 | bfd_boolean skip, relocate; | |
5729 | asection *sreloc; | |
5730 | ||
5731 | *unresolved_reloc_p = FALSE; | |
5732 | ||
a06ea964 NC |
5733 | skip = FALSE; |
5734 | relocate = FALSE; | |
5735 | ||
5736 | outrel.r_addend = signed_addend; | |
5737 | outrel.r_offset = | |
5738 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
5739 | rel->r_offset); | |
5740 | if (outrel.r_offset == (bfd_vma) - 1) | |
5741 | skip = TRUE; | |
5742 | else if (outrel.r_offset == (bfd_vma) - 2) | |
5743 | { | |
5744 | skip = TRUE; | |
5745 | relocate = TRUE; | |
5746 | } | |
0c1ded8d RL |
5747 | else if (abs_symbol_p) |
5748 | { | |
5749 | /* Local absolute symbol. */ | |
5750 | skip = (h->forced_local || (h->dynindx == -1)); | |
5751 | relocate = skip; | |
5752 | } | |
a06ea964 NC |
5753 | |
5754 | outrel.r_offset += (input_section->output_section->vma | |
5755 | + input_section->output_offset); | |
5756 | ||
5757 | if (skip) | |
5758 | memset (&outrel, 0, sizeof outrel); | |
5759 | else if (h != NULL | |
5760 | && h->dynindx != -1 | |
0e1862bb | 5761 | && (!bfd_link_pic (info) |
0c1ded8d | 5762 | || !(bfd_link_pie (info) || SYMBOLIC_BIND (info, h)) |
0e1862bb | 5763 | || !h->def_regular)) |
cec5225b | 5764 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); |
a06ea964 NC |
5765 | else |
5766 | { | |
5767 | int symbol; | |
5768 | ||
5769 | /* On SVR4-ish systems, the dynamic loader cannot | |
5770 | relocate the text and data segments independently, | |
5771 | so the symbol does not matter. */ | |
5772 | symbol = 0; | |
1f56df9d | 5773 | relocate = globals->no_apply_dynamic_relocs ? FALSE : TRUE; |
a6bb11b2 | 5774 | outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE)); |
a06ea964 NC |
5775 | outrel.r_addend += value; |
5776 | } | |
5777 | ||
1419bbe5 WN |
5778 | sreloc = elf_section_data (input_section)->sreloc; |
5779 | if (sreloc == NULL || sreloc->contents == NULL) | |
5780 | return bfd_reloc_notsupported; | |
5781 | ||
5782 | loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals); | |
cec5225b | 5783 | bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc); |
a06ea964 | 5784 | |
1419bbe5 | 5785 | if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size) |
a06ea964 NC |
5786 | { |
5787 | /* Sanity to check that we have previously allocated | |
5788 | sufficient space in the relocation section for the | |
5789 | number of relocations we actually want to emit. */ | |
5790 | abort (); | |
5791 | } | |
5792 | ||
5793 | /* If this reloc is against an external symbol, we do not want to | |
5794 | fiddle with the addend. Otherwise, we need to include the symbol | |
5795 | value so that it becomes an addend for the dynamic reloc. */ | |
5796 | if (!relocate) | |
5797 | return bfd_reloc_ok; | |
5798 | ||
5799 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5800 | contents, rel->r_offset, value, | |
5801 | signed_addend); | |
5802 | } | |
5803 | else | |
5804 | value += signed_addend; | |
5805 | break; | |
5806 | ||
7e057737 SP |
5807 | case BFD_RELOC_AARCH64_BRANCH19: |
5808 | case BFD_RELOC_AARCH64_TSTBR14: | |
5809 | /* A conditional branch to an undefined weak symbol is converted to a | |
5810 | branch to itself. */ | |
5811 | if (weak_undef_p && !via_plt_p) | |
5812 | { | |
5813 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, | |
5814 | place, value, | |
5815 | signed_addend, | |
5816 | weak_undef_p); | |
5817 | break; | |
5818 | } | |
5819 | /* Fall through. */ | |
a6bb11b2 | 5820 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 5821 | case BFD_RELOC_AARCH64_JUMP26: |
a06ea964 NC |
5822 | { |
5823 | asection *splt = globals->root.splt; | |
a06ea964 NC |
5824 | |
5825 | /* A call to an undefined weak symbol is converted to a jump to | |
5826 | the next instruction unless a PLT entry will be created. | |
5827 | The jump to the next instruction is optimized as a NOP. | |
5828 | Do the same for local undefined symbols. */ | |
5829 | if (weak_undef_p && ! via_plt_p) | |
5830 | { | |
5831 | bfd_putl32 (INSN_NOP, hit_data); | |
5832 | return bfd_reloc_ok; | |
5833 | } | |
5834 | ||
5835 | /* If the call goes through a PLT entry, make sure to | |
5836 | check distance to the right destination address. */ | |
5837 | if (via_plt_p) | |
07f9ddfe JW |
5838 | value = (splt->output_section->vma |
5839 | + splt->output_offset + h->plt.offset); | |
5840 | ||
5841 | /* Check if a stub has to be inserted because the destination | |
5842 | is too far away. */ | |
5843 | struct elf_aarch64_stub_hash_entry *stub_entry = NULL; | |
2f340668 JW |
5844 | |
5845 | /* If the branch destination is directed to plt stub, "value" will be | |
5846 | the final destination, otherwise we should plus signed_addend, it may | |
5847 | contain non-zero value, for example call to local function symbol | |
5848 | which are turned into "sec_sym + sec_off", and sec_off is kept in | |
5849 | signed_addend. */ | |
5850 | if (! aarch64_valid_branch_p (via_plt_p ? value : value + signed_addend, | |
5851 | place)) | |
07f9ddfe JW |
5852 | /* The target is out of reach, so redirect the branch to |
5853 | the local stub for this function. */ | |
5854 | stub_entry = elfNN_aarch64_get_stub_entry (input_section, sym_sec, h, | |
5855 | rel, globals); | |
5856 | if (stub_entry != NULL) | |
2f340668 JW |
5857 | { |
5858 | value = (stub_entry->stub_offset | |
5859 | + stub_entry->stub_sec->output_offset | |
5860 | + stub_entry->stub_sec->output_section->vma); | |
5861 | ||
5862 | /* We have redirected the destination to stub entry address, | |
5863 | so ignore any addend record in the original rela entry. */ | |
5864 | signed_addend = 0; | |
5865 | } | |
a06ea964 | 5866 | } |
652afeef TC |
5867 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
5868 | place, value, | |
caed7120 | 5869 | signed_addend, weak_undef_p); |
07f9ddfe | 5870 | *unresolved_reloc_p = FALSE; |
a06ea964 NC |
5871 | break; |
5872 | ||
dcbd20eb JW |
5873 | case BFD_RELOC_AARCH64_16_PCREL: |
5874 | case BFD_RELOC_AARCH64_32_PCREL: | |
5875 | case BFD_RELOC_AARCH64_64_PCREL: | |
ce336788 JW |
5876 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
5877 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
5878 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
5879 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
1daf502a RL |
5880 | case BFD_RELOC_AARCH64_MOVW_PREL_G0: |
5881 | case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC: | |
5882 | case BFD_RELOC_AARCH64_MOVW_PREL_G1: | |
5883 | case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC: | |
5884 | case BFD_RELOC_AARCH64_MOVW_PREL_G2: | |
5885 | case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC: | |
5886 | case BFD_RELOC_AARCH64_MOVW_PREL_G3: | |
0e1862bb | 5887 | if (bfd_link_pic (info) |
dcbd20eb JW |
5888 | && (input_section->flags & SEC_ALLOC) != 0 |
5889 | && (input_section->flags & SEC_READONLY) != 0 | |
d68f1976 | 5890 | && !SYMBOL_REFERENCES_LOCAL (info, h)) |
dcbd20eb JW |
5891 | { |
5892 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
5893 | ||
4eca0228 | 5894 | _bfd_error_handler |
695344c0 | 5895 | /* xgettext:c-format */ |
871b3ab2 | 5896 | (_("%pB: relocation %s against symbol `%s' which may bind " |
d68f1976 JW |
5897 | "externally can not be used when making a shared object; " |
5898 | "recompile with -fPIC"), | |
dcbd20eb JW |
5899 | input_bfd, elfNN_aarch64_howto_table[howto_index].name, |
5900 | h->root.root.string); | |
5901 | bfd_set_error (bfd_error_bad_value); | |
1d75a8e2 | 5902 | return bfd_reloc_notsupported; |
dcbd20eb | 5903 | } |
1a0670f3 | 5904 | /* Fall through. */ |
dcbd20eb | 5905 | |
a6bb11b2 | 5906 | case BFD_RELOC_AARCH64_16: |
92d77487 RL |
5907 | #if ARCH_SIZE == 64 |
5908 | case BFD_RELOC_AARCH64_32: | |
5909 | #endif | |
a6bb11b2 | 5910 | case BFD_RELOC_AARCH64_ADD_LO12: |
ce336788 | 5911 | case BFD_RELOC_AARCH64_LDST128_LO12: |
a6bb11b2 YZ |
5912 | case BFD_RELOC_AARCH64_LDST16_LO12: |
5913 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
5914 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
ce336788 | 5915 | case BFD_RELOC_AARCH64_LDST8_LO12: |
a6bb11b2 YZ |
5916 | case BFD_RELOC_AARCH64_MOVW_G0: |
5917 | case BFD_RELOC_AARCH64_MOVW_G0_NC: | |
ce336788 | 5918 | case BFD_RELOC_AARCH64_MOVW_G0_S: |
a6bb11b2 YZ |
5919 | case BFD_RELOC_AARCH64_MOVW_G1: |
5920 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
ce336788 | 5921 | case BFD_RELOC_AARCH64_MOVW_G1_S: |
a6bb11b2 YZ |
5922 | case BFD_RELOC_AARCH64_MOVW_G2: |
5923 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
ce336788 | 5924 | case BFD_RELOC_AARCH64_MOVW_G2_S: |
a6bb11b2 | 5925 | case BFD_RELOC_AARCH64_MOVW_G3: |
652afeef TC |
5926 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
5927 | place, value, | |
caed7120 | 5928 | signed_addend, weak_undef_p); |
a06ea964 NC |
5929 | break; |
5930 | ||
a6bb11b2 YZ |
5931 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
5932 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 5933 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 5934 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 5935 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 5936 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
2aff25ba JW |
5937 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
5938 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: | |
5939 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: | |
a06ea964 NC |
5940 | if (globals->root.sgot == NULL) |
5941 | BFD_ASSERT (h != NULL); | |
5942 | ||
ff07562f | 5943 | relative_reloc = FALSE; |
a06ea964 NC |
5944 | if (h != NULL) |
5945 | { | |
99ad26cb | 5946 | bfd_vma addend = 0; |
ff07562f JW |
5947 | |
5948 | /* If a symbol is not dynamic and is not undefined weak, bind it | |
5949 | locally and generate a RELATIVE relocation under PIC mode. | |
5950 | ||
5951 | NOTE: one symbol may be referenced by several relocations, we | |
5952 | should only generate one RELATIVE relocation for that symbol. | |
5953 | Therefore, check GOT offset mark first. */ | |
5954 | if (h->dynindx == -1 | |
5955 | && !h->forced_local | |
5956 | && h->root.type != bfd_link_hash_undefweak | |
5957 | && bfd_link_pic (info) | |
5958 | && !symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
5959 | relative_reloc = TRUE; | |
5960 | ||
a06ea964 NC |
5961 | value = aarch64_calculate_got_entry_vma (h, globals, info, value, |
5962 | output_bfd, | |
5963 | unresolved_reloc_p); | |
ff07562f JW |
5964 | /* Record the GOT entry address which will be used when generating |
5965 | RELATIVE relocation. */ | |
5966 | if (relative_reloc) | |
5967 | got_entry_addr = value; | |
5968 | ||
2aff25ba | 5969 | if (aarch64_relocation_aginst_gp_p (bfd_r_type)) |
99ad26cb JW |
5970 | addend = (globals->root.sgot->output_section->vma |
5971 | + globals->root.sgot->output_offset); | |
652afeef TC |
5972 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
5973 | place, value, | |
99ad26cb | 5974 | addend, weak_undef_p); |
a06ea964 | 5975 | } |
b53b1bed JW |
5976 | else |
5977 | { | |
99ad26cb | 5978 | bfd_vma addend = 0; |
b53b1bed JW |
5979 | struct elf_aarch64_local_symbol *locals |
5980 | = elf_aarch64_locals (input_bfd); | |
5981 | ||
5982 | if (locals == NULL) | |
5983 | { | |
5984 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
4eca0228 | 5985 | _bfd_error_handler |
695344c0 | 5986 | /* xgettext:c-format */ |
90b6238f | 5987 | (_("%pB: local symbol descriptor table be NULL when applying " |
b53b1bed JW |
5988 | "relocation %s against local symbol"), |
5989 | input_bfd, elfNN_aarch64_howto_table[howto_index].name); | |
5990 | abort (); | |
5991 | } | |
5992 | ||
5993 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
5994 | base_got = globals->root.sgot; | |
ff07562f JW |
5995 | got_entry_addr = (base_got->output_section->vma |
5996 | + base_got->output_offset + off); | |
b53b1bed JW |
5997 | |
5998 | if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
5999 | { | |
6000 | bfd_put_64 (output_bfd, value, base_got->contents + off); | |
6001 | ||
ff07562f JW |
6002 | /* For local symbol, we have done absolute relocation in static |
6003 | linking stage. While for shared library, we need to update the | |
6004 | content of GOT entry according to the shared object's runtime | |
6005 | base address. So, we need to generate a R_AARCH64_RELATIVE reloc | |
6006 | for dynamic linker. */ | |
0e1862bb | 6007 | if (bfd_link_pic (info)) |
ff07562f | 6008 | relative_reloc = TRUE; |
b53b1bed JW |
6009 | |
6010 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
6011 | } | |
6012 | ||
6013 | /* Update the relocation value to GOT entry addr as we have transformed | |
6014 | the direct data access into indirect data access through GOT. */ | |
6015 | value = got_entry_addr; | |
99ad26cb | 6016 | |
2aff25ba | 6017 | if (aarch64_relocation_aginst_gp_p (bfd_r_type)) |
99ad26cb JW |
6018 | addend = base_got->output_section->vma + base_got->output_offset; |
6019 | ||
652afeef TC |
6020 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
6021 | place, value, | |
99ad26cb | 6022 | addend, weak_undef_p); |
b53b1bed | 6023 | } |
ff07562f JW |
6024 | |
6025 | if (relative_reloc) | |
6026 | { | |
6027 | asection *s; | |
6028 | Elf_Internal_Rela outrel; | |
6029 | ||
6030 | s = globals->root.srelgot; | |
6031 | if (s == NULL) | |
6032 | abort (); | |
6033 | ||
6034 | outrel.r_offset = got_entry_addr; | |
6035 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); | |
6036 | outrel.r_addend = orig_value; | |
6037 | elf_append_rela (output_bfd, s, &outrel); | |
6038 | } | |
a2e1db00 RL |
6039 | break; |
6040 | ||
ce336788 | 6041 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 6042 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 6043 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 6044 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 6045 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 6046 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 6047 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
73f925cc | 6048 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 6049 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 6050 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
6051 | if (globals->root.sgot == NULL) |
6052 | return bfd_reloc_notsupported; | |
6053 | ||
6054 | value = (symbol_got_offset (input_bfd, h, r_symndx) | |
6055 | + globals->root.sgot->output_section->vma | |
f44a1f8e | 6056 | + globals->root.sgot->output_offset); |
a06ea964 | 6057 | |
652afeef TC |
6058 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
6059 | place, value, | |
caed7120 | 6060 | 0, weak_undef_p); |
a06ea964 NC |
6061 | *unresolved_reloc_p = FALSE; |
6062 | break; | |
6063 | ||
7ba7cfe4 | 6064 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 6065 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
3b957e5b RL |
6066 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
6067 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
94facae3 RL |
6068 | if (globals->root.sgot == NULL) |
6069 | return bfd_reloc_notsupported; | |
6070 | ||
6071 | value = symbol_got_offset (input_bfd, h, r_symndx); | |
652afeef TC |
6072 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
6073 | place, value, | |
94facae3 RL |
6074 | 0, weak_undef_p); |
6075 | *unresolved_reloc_p = FALSE; | |
6076 | break; | |
6077 | ||
6ffe9a1b | 6078 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12: |
40fbed84 | 6079 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12: |
753999c1 | 6080 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC: |
07c9aa07 JW |
6081 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12: |
6082 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC: | |
6083 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12: | |
6084 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC: | |
6085 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12: | |
6086 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC: | |
6087 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12: | |
6088 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC: | |
6ffe9a1b JW |
6089 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0: |
6090 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC: | |
6091 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1: | |
6092 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC: | |
6093 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2: | |
652afeef TC |
6094 | { |
6095 | if (!(weak_undef_p || elf_hash_table (info)->tls_sec)) | |
6096 | { | |
6097 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
6098 | _bfd_error_handler | |
6099 | /* xgettext:c-format */ | |
6100 | (_("%pB: TLS relocation %s against undefined symbol `%s'"), | |
6101 | input_bfd, elfNN_aarch64_howto_table[howto_index].name, | |
6102 | h->root.root.string); | |
6103 | bfd_set_error (bfd_error_bad_value); | |
6104 | return bfd_reloc_notsupported; | |
6105 | } | |
6106 | ||
6107 | bfd_vma def_value | |
6108 | = weak_undef_p ? 0 : signed_addend - dtpoff_base (info); | |
6109 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, | |
6110 | place, value, | |
6111 | def_value, weak_undef_p); | |
6112 | break; | |
6113 | } | |
40fbed84 | 6114 | |
a6bb11b2 YZ |
6115 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
6116 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: | |
6117 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: | |
e04ef022 RL |
6118 | case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12: |
6119 | case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC: | |
6120 | case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12: | |
6121 | case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC: | |
6122 | case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12: | |
6123 | case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC: | |
6124 | case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12: | |
6125 | case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC: | |
a6bb11b2 YZ |
6126 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: |
6127 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
6128 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: | |
6129 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
6130 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
652afeef TC |
6131 | { |
6132 | if (!(weak_undef_p || elf_hash_table (info)->tls_sec)) | |
6133 | { | |
6134 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
6135 | _bfd_error_handler | |
6136 | /* xgettext:c-format */ | |
6137 | (_("%pB: TLS relocation %s against undefined symbol `%s'"), | |
6138 | input_bfd, elfNN_aarch64_howto_table[howto_index].name, | |
6139 | h->root.root.string); | |
6140 | bfd_set_error (bfd_error_bad_value); | |
6141 | return bfd_reloc_notsupported; | |
6142 | } | |
6143 | ||
6144 | bfd_vma def_value | |
6145 | = weak_undef_p ? 0 : signed_addend - tpoff_base (info); | |
6146 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, | |
6147 | place, value, | |
6148 | def_value, weak_undef_p); | |
6149 | *unresolved_reloc_p = FALSE; | |
6150 | break; | |
6151 | } | |
a06ea964 | 6152 | |
f955cccf | 6153 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 6154 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 6155 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 6156 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
f955cccf | 6157 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
1ada945d | 6158 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
6159 | if (globals->root.sgot == NULL) |
6160 | return bfd_reloc_notsupported; | |
a06ea964 NC |
6161 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) |
6162 | + globals->root.sgotplt->output_section->vma | |
f44a1f8e | 6163 | + globals->root.sgotplt->output_offset |
a06ea964 NC |
6164 | + globals->sgotplt_jump_table_size); |
6165 | ||
652afeef TC |
6166 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
6167 | place, value, | |
caed7120 | 6168 | 0, weak_undef_p); |
a06ea964 NC |
6169 | *unresolved_reloc_p = FALSE; |
6170 | break; | |
6171 | ||
0484b454 RL |
6172 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
6173 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
6174 | if (globals->root.sgot == NULL) | |
6175 | return bfd_reloc_notsupported; | |
6176 | ||
6177 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) | |
6178 | + globals->root.sgotplt->output_section->vma | |
6179 | + globals->root.sgotplt->output_offset | |
6180 | + globals->sgotplt_jump_table_size); | |
6181 | ||
6182 | value -= (globals->root.sgot->output_section->vma | |
6183 | + globals->root.sgot->output_offset); | |
6184 | ||
652afeef TC |
6185 | value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type, |
6186 | place, value, | |
0484b454 RL |
6187 | 0, weak_undef_p); |
6188 | *unresolved_reloc_p = FALSE; | |
6189 | break; | |
6190 | ||
a06ea964 NC |
6191 | default: |
6192 | return bfd_reloc_notsupported; | |
6193 | } | |
6194 | ||
6195 | if (saved_addend) | |
6196 | *saved_addend = value; | |
6197 | ||
6198 | /* Only apply the final relocation in a sequence. */ | |
6199 | if (save_addend) | |
6200 | return bfd_reloc_continue; | |
6201 | ||
caed7120 YZ |
6202 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, |
6203 | howto, value); | |
a06ea964 NC |
6204 | } |
6205 | ||
2d0ca824 YN |
6206 | /* LP64 and ILP32 operates on x- and w-registers respectively. |
6207 | Next definitions take into account the difference between | |
6208 | corresponding machine codes. R means x-register if the target | |
6209 | arch is LP64, and w-register if the target is ILP32. */ | |
6210 | ||
6211 | #if ARCH_SIZE == 64 | |
6212 | # define add_R0_R0 (0x91000000) | |
6213 | # define add_R0_R0_R1 (0x8b000020) | |
6214 | # define add_R0_R1 (0x91400020) | |
6215 | # define ldr_R0 (0x58000000) | |
6216 | # define ldr_R0_mask(i) (i & 0xffffffe0) | |
6217 | # define ldr_R0_x0 (0xf9400000) | |
6218 | # define ldr_hw_R0 (0xf2a00000) | |
6219 | # define movk_R0 (0xf2800000) | |
6220 | # define movz_R0 (0xd2a00000) | |
6221 | # define movz_hw_R0 (0xd2c00000) | |
6222 | #else /*ARCH_SIZE == 32 */ | |
6223 | # define add_R0_R0 (0x11000000) | |
6224 | # define add_R0_R0_R1 (0x0b000020) | |
6225 | # define add_R0_R1 (0x11400020) | |
6226 | # define ldr_R0 (0x18000000) | |
6227 | # define ldr_R0_mask(i) (i & 0xbfffffe0) | |
6228 | # define ldr_R0_x0 (0xb9400000) | |
6229 | # define ldr_hw_R0 (0x72a00000) | |
6230 | # define movk_R0 (0x72800000) | |
6231 | # define movz_R0 (0x52a00000) | |
6232 | # define movz_hw_R0 (0x52c00000) | |
6233 | #endif | |
6234 | ||
9fca35fc TC |
6235 | /* Structure to hold payload for _bfd_aarch64_erratum_843419_clear_stub, |
6236 | it is used to identify the stub information to reset. */ | |
6237 | ||
6238 | struct erratum_843419_branch_to_stub_clear_data | |
6239 | { | |
6240 | bfd_vma adrp_offset; | |
6241 | asection *output_section; | |
6242 | }; | |
6243 | ||
6244 | /* Clear the erratum information for GEN_ENTRY if the ADRP_OFFSET and | |
6245 | section inside IN_ARG matches. The clearing is done by setting the | |
6246 | stub_type to none. */ | |
6247 | ||
6248 | static bfd_boolean | |
6249 | _bfd_aarch64_erratum_843419_clear_stub (struct bfd_hash_entry *gen_entry, | |
6250 | void *in_arg) | |
6251 | { | |
6252 | struct elf_aarch64_stub_hash_entry *stub_entry | |
6253 | = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
6254 | struct erratum_843419_branch_to_stub_clear_data *data | |
6255 | = (struct erratum_843419_branch_to_stub_clear_data *) in_arg; | |
6256 | ||
6257 | if (stub_entry->target_section != data->output_section | |
6258 | || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer | |
6259 | || stub_entry->adrp_offset != data->adrp_offset) | |
6260 | return TRUE; | |
6261 | ||
6262 | /* Change the stub type instead of removing the entry, removing from the hash | |
6263 | table would be slower and we have already reserved the memory for the entry | |
6264 | so there wouldn't be much gain. Changing the stub also keeps around a | |
6265 | record of what was there before. */ | |
6266 | stub_entry->stub_type = aarch64_stub_none; | |
6267 | ||
6268 | /* We're done and there could have been only one matching stub at that | |
6269 | particular offset, so abort further traversal. */ | |
6270 | return FALSE; | |
6271 | } | |
6272 | ||
6273 | /* TLS Relaxations may relax an adrp sequence that matches the erratum 843419 | |
6274 | sequence. In this case the erratum no longer applies and we need to remove | |
6275 | the entry from the pending stub generation. This clears matching adrp insn | |
6276 | at ADRP_OFFSET in INPUT_SECTION in the stub table defined in GLOBALS. */ | |
6277 | ||
6278 | static void | |
6279 | clear_erratum_843419_entry (struct elf_aarch64_link_hash_table *globals, | |
6280 | bfd_vma adrp_offset, asection *input_section) | |
6281 | { | |
739b5c9c | 6282 | if (globals->fix_erratum_843419 & ERRAT_ADRP) |
9fca35fc TC |
6283 | { |
6284 | struct erratum_843419_branch_to_stub_clear_data data; | |
6285 | data.adrp_offset = adrp_offset; | |
6286 | data.output_section = input_section; | |
6287 | ||
6288 | bfd_hash_traverse (&globals->stub_hash_table, | |
6289 | _bfd_aarch64_erratum_843419_clear_stub, &data); | |
6290 | } | |
6291 | } | |
6292 | ||
a06ea964 NC |
6293 | /* Handle TLS relaxations. Relaxing is possible for symbols that use |
6294 | R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static | |
6295 | link. | |
6296 | ||
6297 | Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller | |
6298 | is to then call final_link_relocate. Return other values in the | |
6299 | case of error. */ | |
6300 | ||
6301 | static bfd_reloc_status_type | |
cec5225b | 6302 | elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals, |
9fca35fc TC |
6303 | bfd *input_bfd, asection *input_section, |
6304 | bfd_byte *contents, Elf_Internal_Rela *rel, | |
6305 | struct elf_link_hash_entry *h) | |
a06ea964 NC |
6306 | { |
6307 | bfd_boolean is_local = h == NULL; | |
cec5225b | 6308 | unsigned int r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
6309 | unsigned long insn; |
6310 | ||
6311 | BFD_ASSERT (globals && input_bfd && contents && rel); | |
6312 | ||
0aa13fee | 6313 | switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type)) |
a06ea964 | 6314 | { |
a6bb11b2 | 6315 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 6316 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a06ea964 NC |
6317 | if (is_local) |
6318 | { | |
6319 | /* GD->LE relaxation: | |
2d0ca824 | 6320 | adrp x0, :tlsgd:var => movz R0, :tprel_g1:var |
a06ea964 | 6321 | or |
2d0ca824 YN |
6322 | adrp x0, :tlsdesc:var => movz R0, :tprel_g1:var |
6323 | ||
6324 | Where R is x for LP64, and w for ILP32. */ | |
6325 | bfd_putl32 (movz_R0, contents + rel->r_offset); | |
9fca35fc TC |
6326 | /* We have relaxed the adrp into a mov, we may have to clear any |
6327 | pending erratum fixes. */ | |
6328 | clear_erratum_843419_entry (globals, rel->r_offset, input_section); | |
a06ea964 NC |
6329 | return bfd_reloc_continue; |
6330 | } | |
6331 | else | |
6332 | { | |
6333 | /* GD->IE relaxation: | |
6334 | adrp x0, :tlsgd:var => adrp x0, :gottprel:var | |
6335 | or | |
6336 | adrp x0, :tlsdesc:var => adrp x0, :gottprel:var | |
6337 | */ | |
a06ea964 NC |
6338 | return bfd_reloc_continue; |
6339 | } | |
6340 | ||
389b8029 MS |
6341 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
6342 | BFD_ASSERT (0); | |
6343 | break; | |
6344 | ||
1ada945d MS |
6345 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
6346 | if (is_local) | |
6347 | { | |
6348 | /* Tiny TLSDESC->LE relaxation: | |
07d6d2b8 AM |
6349 | ldr x1, :tlsdesc:var => movz R0, #:tprel_g1:var |
6350 | adr x0, :tlsdesc:var => movk R0, #:tprel_g0_nc:var | |
1ada945d | 6351 | .tlsdesccall var |
07d6d2b8 | 6352 | blr x1 => nop |
2d0ca824 YN |
6353 | |
6354 | Where R is x for LP64, and w for ILP32. */ | |
1ada945d MS |
6355 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); |
6356 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
6357 | ||
6358 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
6359 | AARCH64_R (TLSLE_MOVW_TPREL_G0_NC)); | |
6360 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6361 | ||
2d0ca824 YN |
6362 | bfd_putl32 (movz_R0, contents + rel->r_offset); |
6363 | bfd_putl32 (movk_R0, contents + rel->r_offset + 4); | |
1ada945d MS |
6364 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); |
6365 | return bfd_reloc_continue; | |
6366 | } | |
6367 | else | |
6368 | { | |
6369 | /* Tiny TLSDESC->IE relaxation: | |
07d6d2b8 AM |
6370 | ldr x1, :tlsdesc:var => ldr x0, :gottprel:var |
6371 | adr x0, :tlsdesc:var => nop | |
1ada945d | 6372 | .tlsdesccall var |
07d6d2b8 | 6373 | blr x1 => nop |
1ada945d MS |
6374 | */ |
6375 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); | |
6376 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
6377 | ||
6378 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6379 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6380 | ||
2d0ca824 | 6381 | bfd_putl32 (ldr_R0, contents + rel->r_offset); |
1ada945d MS |
6382 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4); |
6383 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); | |
6384 | return bfd_reloc_continue; | |
6385 | } | |
6386 | ||
3c12b054 MS |
6387 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
6388 | if (is_local) | |
6389 | { | |
6390 | /* Tiny GD->LE relaxation: | |
07d6d2b8 AM |
6391 | adr x0, :tlsgd:var => mrs x1, tpidr_el0 |
6392 | bl __tls_get_addr => add R0, R1, #:tprel_hi12:x, lsl #12 | |
6393 | nop => add R0, R0, #:tprel_lo12_nc:x | |
2d0ca824 YN |
6394 | |
6395 | Where R is x for LP64, and x for Ilp32. */ | |
3c12b054 MS |
6396 | |
6397 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
6398 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6399 | ||
6400 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0); | |
2d0ca824 YN |
6401 | bfd_putl32 (add_R0_R1, contents + rel->r_offset + 4); |
6402 | bfd_putl32 (add_R0_R0, contents + rel->r_offset + 8); | |
3c12b054 MS |
6403 | |
6404 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
6405 | AARCH64_R (TLSLE_ADD_TPREL_LO12_NC)); | |
6406 | rel[1].r_offset = rel->r_offset + 8; | |
6407 | ||
6408 | /* Move the current relocation to the second instruction in | |
6409 | the sequence. */ | |
6410 | rel->r_offset += 4; | |
6411 | rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
6412 | AARCH64_R (TLSLE_ADD_TPREL_HI12)); | |
6413 | return bfd_reloc_continue; | |
6414 | } | |
6415 | else | |
6416 | { | |
6417 | /* Tiny GD->IE relaxation: | |
07d6d2b8 AM |
6418 | adr x0, :tlsgd:var => ldr R0, :gottprel:var |
6419 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6420 | nop => add R0, R0, R1 | |
2d0ca824 YN |
6421 | |
6422 | Where R is x for LP64, and w for Ilp32. */ | |
3c12b054 MS |
6423 | |
6424 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
6425 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6426 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6427 | ||
2d0ca824 | 6428 | bfd_putl32 (ldr_R0, contents + rel->r_offset); |
3c12b054 | 6429 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); |
2d0ca824 | 6430 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8); |
3c12b054 MS |
6431 | return bfd_reloc_continue; |
6432 | } | |
6433 | ||
ac734732 RL |
6434 | #if ARCH_SIZE == 64 |
6435 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: | |
6436 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSGD_MOVW_G0_NC)); | |
6437 | BFD_ASSERT (rel->r_offset + 12 == rel[2].r_offset); | |
6438 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (CALL26)); | |
6439 | ||
6440 | if (is_local) | |
6441 | { | |
6442 | /* Large GD->LE relaxation: | |
07d6d2b8 | 6443 | movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32 |
ac734732 | 6444 | movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16 |
07d6d2b8 AM |
6445 | add x0, gp, x0 => movk x0, #:tprel_g0_nc:var |
6446 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6447 | nop => add x0, x0, x1 | |
ac734732 RL |
6448 | */ |
6449 | rel[2].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
6450 | AARCH64_R (TLSLE_MOVW_TPREL_G0_NC)); | |
6451 | rel[2].r_offset = rel->r_offset + 8; | |
6452 | ||
2d0ca824 YN |
6453 | bfd_putl32 (movz_hw_R0, contents + rel->r_offset + 0); |
6454 | bfd_putl32 (ldr_hw_R0, contents + rel->r_offset + 4); | |
6455 | bfd_putl32 (movk_R0, contents + rel->r_offset + 8); | |
ac734732 | 6456 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12); |
2d0ca824 | 6457 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16); |
ac734732 RL |
6458 | } |
6459 | else | |
6460 | { | |
6461 | /* Large GD->IE relaxation: | |
07d6d2b8 | 6462 | movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16 |
ac734732 | 6463 | movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var |
07d6d2b8 AM |
6464 | add x0, gp, x0 => ldr x0, [gp, x0] |
6465 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6466 | nop => add x0, x0, x1 | |
ac734732 RL |
6467 | */ |
6468 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6469 | bfd_putl32 (0xd2a80000, contents + rel->r_offset + 0); | |
2d0ca824 | 6470 | bfd_putl32 (ldr_R0, contents + rel->r_offset + 8); |
ac734732 | 6471 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12); |
2d0ca824 | 6472 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16); |
ac734732 RL |
6473 | } |
6474 | return bfd_reloc_continue; | |
6475 | ||
6476 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: | |
6477 | return bfd_reloc_continue; | |
6478 | #endif | |
6479 | ||
043bf05a MS |
6480 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
6481 | return bfd_reloc_continue; | |
6482 | ||
a6bb11b2 | 6483 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
a06ea964 NC |
6484 | if (is_local) |
6485 | { | |
6486 | /* GD->LE relaxation: | |
6487 | ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var | |
2d0ca824 YN |
6488 | |
6489 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
6490 | bfd_putl32 (movk_R0, contents + rel->r_offset); | |
a06ea964 NC |
6491 | return bfd_reloc_continue; |
6492 | } | |
6493 | else | |
6494 | { | |
6495 | /* GD->IE relaxation: | |
2d0ca824 YN |
6496 | ldr xd, [x0, #:tlsdesc_lo12:var] => ldr R0, [x0, #:gottprel_lo12:var] |
6497 | ||
6498 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 | 6499 | insn = bfd_getl32 (contents + rel->r_offset); |
2d0ca824 | 6500 | bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset); |
a06ea964 NC |
6501 | return bfd_reloc_continue; |
6502 | } | |
6503 | ||
a6bb11b2 | 6504 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a06ea964 NC |
6505 | if (is_local) |
6506 | { | |
6507 | /* GD->LE relaxation | |
07d6d2b8 AM |
6508 | add x0, #:tlsgd_lo12:var => movk R0, :tprel_g0_nc:var |
6509 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6510 | nop => add R0, R1, R0 | |
2d0ca824 YN |
6511 | |
6512 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 NC |
6513 | |
6514 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
6515 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
cec5225b | 6516 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 | 6517 | |
2d0ca824 | 6518 | bfd_putl32 (movk_R0, contents + rel->r_offset); |
a06ea964 | 6519 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); |
2d0ca824 | 6520 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8); |
a06ea964 NC |
6521 | return bfd_reloc_continue; |
6522 | } | |
6523 | else | |
6524 | { | |
6525 | /* GD->IE relaxation | |
07d6d2b8 AM |
6526 | ADD x0, #:tlsgd_lo12:var => ldr R0, [x0, #:gottprel_lo12:var] |
6527 | BL __tls_get_addr => mrs x1, tpidr_el0 | |
a06ea964 | 6528 | R_AARCH64_CALL26 |
07d6d2b8 | 6529 | NOP => add R0, R1, R0 |
5cd1d8bc YN |
6530 | |
6531 | Where R is x for lp64 mode, and w for ilp32 mode. */ | |
a06ea964 | 6532 | |
a6bb11b2 | 6533 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); |
a06ea964 NC |
6534 | |
6535 | /* Remove the relocation on the BL instruction. */ | |
cec5225b | 6536 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 | 6537 | |
a06ea964 NC |
6538 | /* We choose to fixup the BL and NOP instructions using the |
6539 | offset from the second relocation to allow flexibility in | |
6540 | scheduling instructions between the ADD and BL. */ | |
2d0ca824 | 6541 | bfd_putl32 (ldr_R0_x0, contents + rel->r_offset); |
5cd1d8bc | 6542 | bfd_putl32 (0xd53bd041, contents + rel[1].r_offset); |
2d0ca824 | 6543 | bfd_putl32 (add_R0_R0_R1, contents + rel[1].r_offset + 4); |
a06ea964 NC |
6544 | return bfd_reloc_continue; |
6545 | } | |
6546 | ||
0484b454 | 6547 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
f955cccf | 6548 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 6549 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a06ea964 | 6550 | /* GD->IE/LE relaxation: |
07d6d2b8 AM |
6551 | add x0, x0, #:tlsdesc_lo12:var => nop |
6552 | blr xd => nop | |
a06ea964 NC |
6553 | */ |
6554 | bfd_putl32 (INSN_NOP, contents + rel->r_offset); | |
6555 | return bfd_reloc_ok; | |
6556 | ||
0484b454 RL |
6557 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
6558 | if (is_local) | |
6559 | { | |
6560 | /* GD->LE relaxation: | |
2d0ca824 YN |
6561 | ldr xd, [gp, xn] => movk R0, #:tprel_g0_nc:var |
6562 | ||
6563 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
6564 | bfd_putl32 (movk_R0, contents + rel->r_offset); | |
0484b454 RL |
6565 | return bfd_reloc_continue; |
6566 | } | |
6567 | else | |
6568 | { | |
6569 | /* GD->IE relaxation: | |
2d0ca824 YN |
6570 | ldr xd, [gp, xn] => ldr R0, [gp, xn] |
6571 | ||
6572 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
0484b454 | 6573 | insn = bfd_getl32 (contents + rel->r_offset); |
2d0ca824 | 6574 | bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset); |
0484b454 RL |
6575 | return bfd_reloc_ok; |
6576 | } | |
6577 | ||
6578 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
6579 | /* GD->LE relaxation: | |
2d0ca824 | 6580 | movk xd, #:tlsdesc_off_g0_nc:var => movk R0, #:tprel_g1_nc:var, lsl #16 |
0484b454 | 6581 | GD->IE relaxation: |
2d0ca824 YN |
6582 | movk xd, #:tlsdesc_off_g0_nc:var => movk Rd, #:gottprel_g0_nc:var |
6583 | ||
6584 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
0484b454 | 6585 | if (is_local) |
2d0ca824 | 6586 | bfd_putl32 (ldr_hw_R0, contents + rel->r_offset); |
0484b454 RL |
6587 | return bfd_reloc_continue; |
6588 | ||
6589 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
6590 | if (is_local) | |
6591 | { | |
6592 | /* GD->LE relaxation: | |
2d0ca824 YN |
6593 | movz xd, #:tlsdesc_off_g1:var => movz R0, #:tprel_g2:var, lsl #32 |
6594 | ||
6595 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
6596 | bfd_putl32 (movz_hw_R0, contents + rel->r_offset); | |
0484b454 RL |
6597 | return bfd_reloc_continue; |
6598 | } | |
6599 | else | |
6600 | { | |
6601 | /* GD->IE relaxation: | |
2d0ca824 YN |
6602 | movz xd, #:tlsdesc_off_g1:var => movz Rd, #:gottprel_g1:var, lsl #16 |
6603 | ||
6604 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
0484b454 | 6605 | insn = bfd_getl32 (contents + rel->r_offset); |
2d0ca824 | 6606 | bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset); |
0484b454 RL |
6607 | return bfd_reloc_continue; |
6608 | } | |
6609 | ||
a6bb11b2 | 6610 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a06ea964 | 6611 | /* IE->LE relaxation: |
07d6d2b8 | 6612 | adrp xd, :gottprel:var => movz Rd, :tprel_g1:var |
2d0ca824 YN |
6613 | |
6614 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 NC |
6615 | if (is_local) |
6616 | { | |
6617 | insn = bfd_getl32 (contents + rel->r_offset); | |
2d0ca824 | 6618 | bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset); |
9fca35fc TC |
6619 | /* We have relaxed the adrp into a mov, we may have to clear any |
6620 | pending erratum fixes. */ | |
6621 | clear_erratum_843419_entry (globals, rel->r_offset, input_section); | |
a06ea964 NC |
6622 | } |
6623 | return bfd_reloc_continue; | |
6624 | ||
a6bb11b2 | 6625 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: |
a06ea964 | 6626 | /* IE->LE relaxation: |
07d6d2b8 | 6627 | ldr xd, [xm, #:gottprel_lo12:var] => movk Rd, :tprel_g0_nc:var |
2d0ca824 YN |
6628 | |
6629 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 NC |
6630 | if (is_local) |
6631 | { | |
6632 | insn = bfd_getl32 (contents + rel->r_offset); | |
2d0ca824 | 6633 | bfd_putl32 (movk_R0 | (insn & 0x1f), contents + rel->r_offset); |
a06ea964 NC |
6634 | } |
6635 | return bfd_reloc_continue; | |
6636 | ||
259364ad JW |
6637 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
6638 | /* LD->LE relaxation (tiny): | |
6639 | adr x0, :tlsldm:x => mrs x0, tpidr_el0 | |
c1fc2d7e YN |
6640 | bl __tls_get_addr => add R0, R0, TCB_SIZE |
6641 | ||
6642 | Where R is x for lp64 mode, and w for ilp32 mode. */ | |
259364ad JW |
6643 | if (is_local) |
6644 | { | |
6645 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6646 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); | |
6647 | /* No need of CALL26 relocation for tls_get_addr. */ | |
6648 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6649 | bfd_putl32 (0xd53bd040, contents + rel->r_offset + 0); | |
2d0ca824 YN |
6650 | bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10), |
6651 | contents + rel->r_offset + 4); | |
259364ad JW |
6652 | return bfd_reloc_ok; |
6653 | } | |
6654 | return bfd_reloc_continue; | |
6655 | ||
6656 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: | |
6657 | /* LD->LE relaxation (small): | |
6658 | adrp x0, :tlsldm:x => mrs x0, tpidr_el0 | |
6659 | */ | |
6660 | if (is_local) | |
6661 | { | |
6662 | bfd_putl32 (0xd53bd040, contents + rel->r_offset); | |
6663 | return bfd_reloc_ok; | |
6664 | } | |
6665 | return bfd_reloc_continue; | |
6666 | ||
6667 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: | |
6668 | /* LD->LE relaxation (small): | |
c1fc2d7e | 6669 | add x0, #:tlsldm_lo12:x => add R0, R0, TCB_SIZE |
259364ad | 6670 | bl __tls_get_addr => nop |
c1fc2d7e YN |
6671 | |
6672 | Where R is x for lp64 mode, and w for ilp32 mode. */ | |
259364ad JW |
6673 | if (is_local) |
6674 | { | |
6675 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6676 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); | |
6677 | /* No need of CALL26 relocation for tls_get_addr. */ | |
6678 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
2d0ca824 YN |
6679 | bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10), |
6680 | contents + rel->r_offset + 0); | |
c1fc2d7e | 6681 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4); |
259364ad JW |
6682 | return bfd_reloc_ok; |
6683 | } | |
6684 | return bfd_reloc_continue; | |
6685 | ||
a06ea964 NC |
6686 | default: |
6687 | return bfd_reloc_continue; | |
6688 | } | |
6689 | ||
6690 | return bfd_reloc_ok; | |
6691 | } | |
6692 | ||
6693 | /* Relocate an AArch64 ELF section. */ | |
6694 | ||
6695 | static bfd_boolean | |
cec5225b | 6696 | elfNN_aarch64_relocate_section (bfd *output_bfd, |
a06ea964 NC |
6697 | struct bfd_link_info *info, |
6698 | bfd *input_bfd, | |
6699 | asection *input_section, | |
6700 | bfd_byte *contents, | |
6701 | Elf_Internal_Rela *relocs, | |
6702 | Elf_Internal_Sym *local_syms, | |
6703 | asection **local_sections) | |
6704 | { | |
6705 | Elf_Internal_Shdr *symtab_hdr; | |
6706 | struct elf_link_hash_entry **sym_hashes; | |
6707 | Elf_Internal_Rela *rel; | |
6708 | Elf_Internal_Rela *relend; | |
6709 | const char *name; | |
cec5225b | 6710 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 NC |
6711 | bfd_boolean save_addend = FALSE; |
6712 | bfd_vma addend = 0; | |
6713 | ||
cec5225b | 6714 | globals = elf_aarch64_hash_table (info); |
a06ea964 NC |
6715 | |
6716 | symtab_hdr = &elf_symtab_hdr (input_bfd); | |
6717 | sym_hashes = elf_sym_hashes (input_bfd); | |
6718 | ||
6719 | rel = relocs; | |
6720 | relend = relocs + input_section->reloc_count; | |
6721 | for (; rel < relend; rel++) | |
6722 | { | |
6723 | unsigned int r_type; | |
a6bb11b2 YZ |
6724 | bfd_reloc_code_real_type bfd_r_type; |
6725 | bfd_reloc_code_real_type relaxed_bfd_r_type; | |
a06ea964 NC |
6726 | reloc_howto_type *howto; |
6727 | unsigned long r_symndx; | |
6728 | Elf_Internal_Sym *sym; | |
6729 | asection *sec; | |
6730 | struct elf_link_hash_entry *h; | |
6731 | bfd_vma relocation; | |
6732 | bfd_reloc_status_type r; | |
6733 | arelent bfd_reloc; | |
6734 | char sym_type; | |
6735 | bfd_boolean unresolved_reloc = FALSE; | |
6736 | char *error_message = NULL; | |
6737 | ||
cec5225b YZ |
6738 | r_symndx = ELFNN_R_SYM (rel->r_info); |
6739 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 | 6740 | |
0aa13fee AM |
6741 | bfd_reloc.howto = elfNN_aarch64_howto_from_type (input_bfd, r_type); |
6742 | howto = bfd_reloc.howto; | |
a06ea964 | 6743 | |
7fcfd62d | 6744 | if (howto == NULL) |
47aeb64c NC |
6745 | return _bfd_unrecognized_reloc (input_bfd, input_section, r_type); |
6746 | ||
a6bb11b2 | 6747 | bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto); |
7fcfd62d | 6748 | |
a06ea964 NC |
6749 | h = NULL; |
6750 | sym = NULL; | |
6751 | sec = NULL; | |
6752 | ||
6753 | if (r_symndx < symtab_hdr->sh_info) | |
6754 | { | |
6755 | sym = local_syms + r_symndx; | |
cec5225b | 6756 | sym_type = ELFNN_ST_TYPE (sym->st_info); |
a06ea964 NC |
6757 | sec = local_sections[r_symndx]; |
6758 | ||
6759 | /* An object file might have a reference to a local | |
6760 | undefined symbol. This is a daft object file, but we | |
6761 | should at least do something about it. */ | |
6762 | if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL | |
6763 | && bfd_is_und_section (sec) | |
6764 | && ELF_ST_BIND (sym->st_info) != STB_WEAK) | |
1a72702b AM |
6765 | (*info->callbacks->undefined_symbol) |
6766 | (info, bfd_elf_string_from_elf_section | |
6767 | (input_bfd, symtab_hdr->sh_link, sym->st_name), | |
6768 | input_bfd, input_section, rel->r_offset, TRUE); | |
a06ea964 | 6769 | |
a06ea964 | 6770 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
1419bbe5 WN |
6771 | |
6772 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
0e1862bb | 6773 | if (!bfd_link_relocatable (info) |
1419bbe5 WN |
6774 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
6775 | { | |
6776 | h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd, | |
6777 | rel, FALSE); | |
6778 | if (h == NULL) | |
6779 | abort (); | |
6780 | ||
6781 | /* Set STT_GNU_IFUNC symbol value. */ | |
6782 | h->root.u.def.value = sym->st_value; | |
6783 | h->root.u.def.section = sec; | |
6784 | } | |
a06ea964 NC |
6785 | } |
6786 | else | |
6787 | { | |
62d887d4 | 6788 | bfd_boolean warned, ignored; |
a06ea964 NC |
6789 | |
6790 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
6791 | r_symndx, symtab_hdr, sym_hashes, | |
6792 | h, sec, relocation, | |
62d887d4 | 6793 | unresolved_reloc, warned, ignored); |
a06ea964 NC |
6794 | |
6795 | sym_type = h->type; | |
6796 | } | |
6797 | ||
6798 | if (sec != NULL && discarded_section (sec)) | |
6799 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
6800 | rel, 1, relend, howto, 0, contents); | |
6801 | ||
0e1862bb | 6802 | if (bfd_link_relocatable (info)) |
2e0488d3 | 6803 | continue; |
a06ea964 NC |
6804 | |
6805 | if (h != NULL) | |
6806 | name = h->root.root.string; | |
6807 | else | |
6808 | { | |
6809 | name = (bfd_elf_string_from_elf_section | |
6810 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
6811 | if (name == NULL || *name == '\0') | |
fd361982 | 6812 | name = bfd_section_name (sec); |
a06ea964 NC |
6813 | } |
6814 | ||
6815 | if (r_symndx != 0 | |
6816 | && r_type != R_AARCH64_NONE | |
6817 | && r_type != R_AARCH64_NULL | |
6818 | && (h == NULL | |
6819 | || h->root.type == bfd_link_hash_defined | |
6820 | || h->root.type == bfd_link_hash_defweak) | |
a6bb11b2 | 6821 | && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS)) |
a06ea964 | 6822 | { |
4eca0228 | 6823 | _bfd_error_handler |
a06ea964 | 6824 | ((sym_type == STT_TLS |
695344c0 | 6825 | /* xgettext:c-format */ |
2dcf00ce | 6826 | ? _("%pB(%pA+%#" PRIx64 "): %s used with TLS symbol %s") |
695344c0 | 6827 | /* xgettext:c-format */ |
2dcf00ce | 6828 | : _("%pB(%pA+%#" PRIx64 "): %s used with non-TLS symbol %s")), |
a06ea964 | 6829 | input_bfd, |
2dcf00ce | 6830 | input_section, (uint64_t) rel->r_offset, howto->name, name); |
a06ea964 NC |
6831 | } |
6832 | ||
a06ea964 | 6833 | /* We relax only if we can see that there can be a valid transition |
07d6d2b8 AM |
6834 | from a reloc type to another. |
6835 | We call elfNN_aarch64_final_link_relocate unless we're completely | |
6836 | done, i.e., the relaxation produced the final output we want. */ | |
a06ea964 | 6837 | |
a6bb11b2 YZ |
6838 | relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, |
6839 | h, r_symndx); | |
6840 | if (relaxed_bfd_r_type != bfd_r_type) | |
a06ea964 | 6841 | { |
a6bb11b2 YZ |
6842 | bfd_r_type = relaxed_bfd_r_type; |
6843 | howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type); | |
6844 | BFD_ASSERT (howto != NULL); | |
6845 | r_type = howto->type; | |
9fca35fc TC |
6846 | r = elfNN_aarch64_tls_relax (globals, input_bfd, input_section, |
6847 | contents, rel, h); | |
a06ea964 NC |
6848 | unresolved_reloc = 0; |
6849 | } | |
6850 | else | |
6851 | r = bfd_reloc_continue; | |
6852 | ||
6853 | /* There may be multiple consecutive relocations for the | |
07d6d2b8 AM |
6854 | same offset. In that case we are supposed to treat the |
6855 | output of each relocation as the addend for the next. */ | |
a06ea964 NC |
6856 | if (rel + 1 < relend |
6857 | && rel->r_offset == rel[1].r_offset | |
cec5225b YZ |
6858 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE |
6859 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL) | |
a06ea964 NC |
6860 | save_addend = TRUE; |
6861 | else | |
6862 | save_addend = FALSE; | |
6863 | ||
6864 | if (r == bfd_reloc_continue) | |
cec5225b | 6865 | r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd, |
a06ea964 NC |
6866 | input_section, contents, rel, |
6867 | relocation, info, sec, | |
6868 | h, &unresolved_reloc, | |
1419bbe5 | 6869 | save_addend, &addend, sym); |
a06ea964 | 6870 | |
0aa13fee | 6871 | switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type)) |
a06ea964 | 6872 | { |
ce336788 | 6873 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 6874 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 6875 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 6876 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 6877 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
73f925cc | 6878 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 6879 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 6880 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
6881 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
6882 | { | |
6883 | bfd_boolean need_relocs = FALSE; | |
6884 | bfd_byte *loc; | |
6885 | int indx; | |
6886 | bfd_vma off; | |
6887 | ||
6888 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
6889 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
6890 | ||
6891 | need_relocs = | |
6dda7875 | 6892 | (!bfd_link_executable (info) || indx != 0) && |
a06ea964 NC |
6893 | (h == NULL |
6894 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6895 | || h->root.type != bfd_link_hash_undefweak); | |
6896 | ||
6897 | BFD_ASSERT (globals->root.srelgot != NULL); | |
6898 | ||
6899 | if (need_relocs) | |
6900 | { | |
6901 | Elf_Internal_Rela rela; | |
a6bb11b2 | 6902 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD)); |
a06ea964 NC |
6903 | rela.r_addend = 0; |
6904 | rela.r_offset = globals->root.sgot->output_section->vma + | |
6905 | globals->root.sgot->output_offset + off; | |
6906 | ||
6907 | ||
6908 | loc = globals->root.srelgot->contents; | |
6909 | loc += globals->root.srelgot->reloc_count++ | |
6910 | * RELOC_SIZE (htab); | |
cec5225b | 6911 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 6912 | |
f69e4920 | 6913 | bfd_reloc_code_real_type real_type = |
0aa13fee | 6914 | elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
f69e4920 JW |
6915 | |
6916 | if (real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 | |
73f925cc JW |
6917 | || real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 |
6918 | || real_type == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC) | |
77a69ff8 JW |
6919 | { |
6920 | /* For local dynamic, don't generate DTPREL in any case. | |
6921 | Initialize the DTPREL slot into zero, so we get module | |
6922 | base address when invoke runtime TLS resolver. */ | |
6923 | bfd_put_NN (output_bfd, 0, | |
6924 | globals->root.sgot->contents + off | |
6925 | + GOT_ENTRY_SIZE); | |
6926 | } | |
6927 | else if (indx == 0) | |
a06ea964 | 6928 | { |
cec5225b | 6929 | bfd_put_NN (output_bfd, |
a06ea964 NC |
6930 | relocation - dtpoff_base (info), |
6931 | globals->root.sgot->contents + off | |
6932 | + GOT_ENTRY_SIZE); | |
6933 | } | |
6934 | else | |
6935 | { | |
6936 | /* This TLS symbol is global. We emit a | |
6937 | relocation to fixup the tls offset at load | |
6938 | time. */ | |
6939 | rela.r_info = | |
a6bb11b2 | 6940 | ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL)); |
a06ea964 NC |
6941 | rela.r_addend = 0; |
6942 | rela.r_offset = | |
6943 | (globals->root.sgot->output_section->vma | |
6944 | + globals->root.sgot->output_offset + off | |
6945 | + GOT_ENTRY_SIZE); | |
6946 | ||
6947 | loc = globals->root.srelgot->contents; | |
6948 | loc += globals->root.srelgot->reloc_count++ | |
6949 | * RELOC_SIZE (globals); | |
cec5225b YZ |
6950 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
6951 | bfd_put_NN (output_bfd, (bfd_vma) 0, | |
a06ea964 NC |
6952 | globals->root.sgot->contents + off |
6953 | + GOT_ENTRY_SIZE); | |
6954 | } | |
6955 | } | |
6956 | else | |
6957 | { | |
cec5225b | 6958 | bfd_put_NN (output_bfd, (bfd_vma) 1, |
a06ea964 | 6959 | globals->root.sgot->contents + off); |
cec5225b | 6960 | bfd_put_NN (output_bfd, |
a06ea964 NC |
6961 | relocation - dtpoff_base (info), |
6962 | globals->root.sgot->contents + off | |
6963 | + GOT_ENTRY_SIZE); | |
6964 | } | |
6965 | ||
6966 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
6967 | } | |
6968 | break; | |
6969 | ||
a6bb11b2 YZ |
6970 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
6971 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
043bf05a | 6972 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
6973 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
6974 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
a06ea964 NC |
6975 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
6976 | { | |
6977 | bfd_boolean need_relocs = FALSE; | |
6978 | bfd_byte *loc; | |
6979 | int indx; | |
6980 | bfd_vma off; | |
6981 | ||
6982 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
6983 | ||
6984 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
6985 | ||
6986 | need_relocs = | |
6dda7875 | 6987 | (!bfd_link_executable (info) || indx != 0) && |
a06ea964 NC |
6988 | (h == NULL |
6989 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6990 | || h->root.type != bfd_link_hash_undefweak); | |
6991 | ||
6992 | BFD_ASSERT (globals->root.srelgot != NULL); | |
6993 | ||
6994 | if (need_relocs) | |
6995 | { | |
6996 | Elf_Internal_Rela rela; | |
6997 | ||
6998 | if (indx == 0) | |
6999 | rela.r_addend = relocation - dtpoff_base (info); | |
7000 | else | |
7001 | rela.r_addend = 0; | |
7002 | ||
a6bb11b2 | 7003 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL)); |
a06ea964 NC |
7004 | rela.r_offset = globals->root.sgot->output_section->vma + |
7005 | globals->root.sgot->output_offset + off; | |
7006 | ||
7007 | loc = globals->root.srelgot->contents; | |
7008 | loc += globals->root.srelgot->reloc_count++ | |
7009 | * RELOC_SIZE (htab); | |
7010 | ||
cec5225b | 7011 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 7012 | |
cec5225b | 7013 | bfd_put_NN (output_bfd, rela.r_addend, |
a06ea964 NC |
7014 | globals->root.sgot->contents + off); |
7015 | } | |
7016 | else | |
cec5225b | 7017 | bfd_put_NN (output_bfd, relocation - tpoff_base (info), |
a06ea964 NC |
7018 | globals->root.sgot->contents + off); |
7019 | ||
7020 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
7021 | } | |
7022 | break; | |
7023 | ||
f955cccf | 7024 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 7025 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 7026 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 7027 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
1ada945d | 7028 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
7029 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
7030 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a06ea964 NC |
7031 | if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx)) |
7032 | { | |
7033 | bfd_boolean need_relocs = FALSE; | |
7034 | int indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
7035 | bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx); | |
7036 | ||
7037 | need_relocs = (h == NULL | |
7038 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7039 | || h->root.type != bfd_link_hash_undefweak); | |
7040 | ||
7041 | BFD_ASSERT (globals->root.srelgot != NULL); | |
7042 | BFD_ASSERT (globals->root.sgot != NULL); | |
7043 | ||
7044 | if (need_relocs) | |
7045 | { | |
7046 | bfd_byte *loc; | |
7047 | Elf_Internal_Rela rela; | |
a6bb11b2 YZ |
7048 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC)); |
7049 | ||
a06ea964 NC |
7050 | rela.r_addend = 0; |
7051 | rela.r_offset = (globals->root.sgotplt->output_section->vma | |
7052 | + globals->root.sgotplt->output_offset | |
7053 | + off + globals->sgotplt_jump_table_size); | |
7054 | ||
7055 | if (indx == 0) | |
7056 | rela.r_addend = relocation - dtpoff_base (info); | |
7057 | ||
7058 | /* Allocate the next available slot in the PLT reloc | |
7059 | section to hold our R_AARCH64_TLSDESC, the next | |
7060 | available slot is determined from reloc_count, | |
7061 | which we step. But note, reloc_count was | |
7062 | artifically moved down while allocating slots for | |
7063 | real PLT relocs such that all of the PLT relocs | |
7064 | will fit above the initial reloc_count and the | |
7065 | extra stuff will fit below. */ | |
7066 | loc = globals->root.srelplt->contents; | |
7067 | loc += globals->root.srelplt->reloc_count++ | |
7068 | * RELOC_SIZE (globals); | |
7069 | ||
cec5225b | 7070 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 7071 | |
cec5225b | 7072 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
7073 | globals->root.sgotplt->contents + off + |
7074 | globals->sgotplt_jump_table_size); | |
cec5225b | 7075 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
7076 | globals->root.sgotplt->contents + off + |
7077 | globals->sgotplt_jump_table_size + | |
7078 | GOT_ENTRY_SIZE); | |
7079 | } | |
7080 | ||
7081 | symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx); | |
7082 | } | |
7083 | break; | |
a6bb11b2 YZ |
7084 | default: |
7085 | break; | |
a06ea964 NC |
7086 | } |
7087 | ||
a06ea964 | 7088 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
07d6d2b8 AM |
7089 | because such sections are not SEC_ALLOC and thus ld.so will |
7090 | not process them. */ | |
a06ea964 NC |
7091 | if (unresolved_reloc |
7092 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
7093 | && h->def_dynamic) | |
7094 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
7095 | +rel->r_offset) != (bfd_vma) - 1) | |
7096 | { | |
4eca0228 | 7097 | _bfd_error_handler |
695344c0 | 7098 | /* xgettext:c-format */ |
2dcf00ce AM |
7099 | (_("%pB(%pA+%#" PRIx64 "): " |
7100 | "unresolvable %s relocation against symbol `%s'"), | |
7101 | input_bfd, input_section, (uint64_t) rel->r_offset, howto->name, | |
a06ea964 NC |
7102 | h->root.root.string); |
7103 | return FALSE; | |
7104 | } | |
7105 | ||
7106 | if (r != bfd_reloc_ok && r != bfd_reloc_continue) | |
7107 | { | |
c674f5cd | 7108 | bfd_reloc_code_real_type real_r_type |
0aa13fee | 7109 | = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
c674f5cd | 7110 | |
a06ea964 NC |
7111 | switch (r) |
7112 | { | |
7113 | case bfd_reloc_overflow: | |
1a72702b AM |
7114 | (*info->callbacks->reloc_overflow) |
7115 | (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, | |
7116 | input_bfd, input_section, rel->r_offset); | |
c674f5cd JW |
7117 | if (real_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
7118 | || real_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
7119 | { | |
7120 | (*info->callbacks->warning) | |
7121 | (info, | |
90b6238f | 7122 | _("too many GOT entries for -fpic, " |
c674f5cd JW |
7123 | "please recompile with -fPIC"), |
7124 | name, input_bfd, input_section, rel->r_offset); | |
7125 | return FALSE; | |
7126 | } | |
027e9c75 NC |
7127 | /* Overflow can occur when a variable is referenced with a type |
7128 | that has a larger alignment than the type with which it was | |
7129 | declared. eg: | |
7130 | file1.c: extern int foo; int a (void) { return foo; } | |
7131 | file2.c: char bar, foo, baz; | |
7132 | If the variable is placed into a data section at an offset | |
7133 | that is incompatible with the larger alignment requirement | |
7134 | overflow will occur. (Strictly speaking this is not overflow | |
7135 | but rather an alignment problem, but the bfd_reloc_ error | |
7136 | enum does not have a value to cover that situation). | |
7137 | ||
7138 | Try to catch this situation here and provide a more helpful | |
7139 | error message to the user. */ | |
7140 | if (addend & ((1 << howto->rightshift) - 1) | |
7141 | /* FIXME: Are we testing all of the appropriate reloc | |
7142 | types here ? */ | |
7143 | && (real_r_type == BFD_RELOC_AARCH64_LD_LO19_PCREL | |
7144 | || real_r_type == BFD_RELOC_AARCH64_LDST16_LO12 | |
7145 | || real_r_type == BFD_RELOC_AARCH64_LDST32_LO12 | |
7146 | || real_r_type == BFD_RELOC_AARCH64_LDST64_LO12 | |
7147 | || real_r_type == BFD_RELOC_AARCH64_LDST128_LO12)) | |
7148 | { | |
7149 | info->callbacks->warning | |
90b6238f | 7150 | (info, _("one possible cause of this error is that the \ |
027e9c75 | 7151 | symbol is being referenced in the indicated code as if it had a larger \ |
90b6238f | 7152 | alignment than was declared where it was defined"), |
027e9c75 NC |
7153 | name, input_bfd, input_section, rel->r_offset); |
7154 | } | |
a06ea964 NC |
7155 | break; |
7156 | ||
7157 | case bfd_reloc_undefined: | |
1a72702b AM |
7158 | (*info->callbacks->undefined_symbol) |
7159 | (info, name, input_bfd, input_section, rel->r_offset, TRUE); | |
a06ea964 NC |
7160 | break; |
7161 | ||
7162 | case bfd_reloc_outofrange: | |
7163 | error_message = _("out of range"); | |
7164 | goto common_error; | |
7165 | ||
7166 | case bfd_reloc_notsupported: | |
7167 | error_message = _("unsupported relocation"); | |
7168 | goto common_error; | |
7169 | ||
7170 | case bfd_reloc_dangerous: | |
7171 | /* error_message should already be set. */ | |
7172 | goto common_error; | |
7173 | ||
7174 | default: | |
7175 | error_message = _("unknown error"); | |
7176 | /* Fall through. */ | |
7177 | ||
7178 | common_error: | |
7179 | BFD_ASSERT (error_message != NULL); | |
1a72702b AM |
7180 | (*info->callbacks->reloc_dangerous) |
7181 | (info, error_message, input_bfd, input_section, rel->r_offset); | |
a06ea964 NC |
7182 | break; |
7183 | } | |
7184 | } | |
027e9c75 NC |
7185 | |
7186 | if (!save_addend) | |
7187 | addend = 0; | |
a06ea964 NC |
7188 | } |
7189 | ||
7190 | return TRUE; | |
7191 | } | |
7192 | ||
7193 | /* Set the right machine number. */ | |
7194 | ||
7195 | static bfd_boolean | |
cec5225b | 7196 | elfNN_aarch64_object_p (bfd *abfd) |
a06ea964 | 7197 | { |
cec5225b YZ |
7198 | #if ARCH_SIZE == 32 |
7199 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32); | |
7200 | #else | |
a06ea964 | 7201 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64); |
cec5225b | 7202 | #endif |
a06ea964 NC |
7203 | return TRUE; |
7204 | } | |
7205 | ||
7206 | /* Function to keep AArch64 specific flags in the ELF header. */ | |
7207 | ||
7208 | static bfd_boolean | |
cec5225b | 7209 | elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags) |
a06ea964 NC |
7210 | { |
7211 | if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags) | |
7212 | { | |
7213 | } | |
7214 | else | |
7215 | { | |
7216 | elf_elfheader (abfd)->e_flags = flags; | |
7217 | elf_flags_init (abfd) = TRUE; | |
7218 | } | |
7219 | ||
7220 | return TRUE; | |
7221 | } | |
7222 | ||
a06ea964 NC |
7223 | /* Merge backend specific data from an object file to the output |
7224 | object file when linking. */ | |
7225 | ||
7226 | static bfd_boolean | |
50e03d47 | 7227 | elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
a06ea964 | 7228 | { |
50e03d47 | 7229 | bfd *obfd = info->output_bfd; |
a06ea964 NC |
7230 | flagword out_flags; |
7231 | flagword in_flags; | |
7232 | bfd_boolean flags_compatible = TRUE; | |
7233 | asection *sec; | |
7234 | ||
7235 | /* Check if we have the same endianess. */ | |
50e03d47 | 7236 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
a06ea964 NC |
7237 | return FALSE; |
7238 | ||
7239 | if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd)) | |
7240 | return TRUE; | |
7241 | ||
7242 | /* The input BFD must have had its flags initialised. */ | |
7243 | /* The following seems bogus to me -- The flags are initialized in | |
7244 | the assembler but I don't think an elf_flags_init field is | |
7245 | written into the object. */ | |
7246 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ | |
7247 | ||
7248 | in_flags = elf_elfheader (ibfd)->e_flags; | |
7249 | out_flags = elf_elfheader (obfd)->e_flags; | |
7250 | ||
7251 | if (!elf_flags_init (obfd)) | |
7252 | { | |
7253 | /* If the input is the default architecture and had the default | |
07d6d2b8 AM |
7254 | flags then do not bother setting the flags for the output |
7255 | architecture, instead allow future merges to do this. If no | |
7256 | future merges ever set these flags then they will retain their | |
7257 | uninitialised values, which surprise surprise, correspond | |
7258 | to the default values. */ | |
a06ea964 NC |
7259 | if (bfd_get_arch_info (ibfd)->the_default |
7260 | && elf_elfheader (ibfd)->e_flags == 0) | |
7261 | return TRUE; | |
7262 | ||
7263 | elf_flags_init (obfd) = TRUE; | |
7264 | elf_elfheader (obfd)->e_flags = in_flags; | |
7265 | ||
7266 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
7267 | && bfd_get_arch_info (obfd)->the_default) | |
7268 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
7269 | bfd_get_mach (ibfd)); | |
7270 | ||
7271 | return TRUE; | |
7272 | } | |
7273 | ||
7274 | /* Identical flags must be compatible. */ | |
7275 | if (in_flags == out_flags) | |
7276 | return TRUE; | |
7277 | ||
7278 | /* Check to see if the input BFD actually contains any sections. If | |
7279 | not, its flags may not have been initialised either, but it | |
7280 | cannot actually cause any incompatiblity. Do not short-circuit | |
7281 | dynamic objects; their section list may be emptied by | |
7282 | elf_link_add_object_symbols. | |
7283 | ||
7284 | Also check to see if there are no code sections in the input. | |
7285 | In this case there is no need to check for code specific flags. | |
7286 | XXX - do we need to worry about floating-point format compatability | |
7287 | in data sections ? */ | |
7288 | if (!(ibfd->flags & DYNAMIC)) | |
7289 | { | |
7290 | bfd_boolean null_input_bfd = TRUE; | |
7291 | bfd_boolean only_data_sections = TRUE; | |
7292 | ||
7293 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7294 | { | |
fd361982 | 7295 | if ((bfd_section_flags (sec) |
a06ea964 NC |
7296 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) |
7297 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
7298 | only_data_sections = FALSE; | |
7299 | ||
7300 | null_input_bfd = FALSE; | |
7301 | break; | |
7302 | } | |
7303 | ||
7304 | if (null_input_bfd || only_data_sections) | |
7305 | return TRUE; | |
7306 | } | |
7307 | ||
7308 | return flags_compatible; | |
7309 | } | |
7310 | ||
7311 | /* Display the flags field. */ | |
7312 | ||
7313 | static bfd_boolean | |
cec5225b | 7314 | elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr) |
a06ea964 NC |
7315 | { |
7316 | FILE *file = (FILE *) ptr; | |
7317 | unsigned long flags; | |
7318 | ||
7319 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
7320 | ||
7321 | /* Print normal ELF private data. */ | |
7322 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
7323 | ||
7324 | flags = elf_elfheader (abfd)->e_flags; | |
7325 | /* Ignore init flag - it may not be set, despite the flags field | |
7326 | containing valid data. */ | |
7327 | ||
7328 | /* xgettext:c-format */ | |
7329 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
7330 | ||
7331 | if (flags) | |
7332 | fprintf (file, _("<Unrecognised flag bits set>")); | |
7333 | ||
7334 | fputc ('\n', file); | |
7335 | ||
7336 | return TRUE; | |
7337 | } | |
7338 | ||
6353d82b JW |
7339 | /* Return true if we need copy relocation against EH. */ |
7340 | ||
7341 | static bfd_boolean | |
7342 | need_copy_relocation_p (struct elf_aarch64_link_hash_entry *eh) | |
7343 | { | |
7344 | struct elf_dyn_relocs *p; | |
7345 | asection *s; | |
7346 | ||
190eb1dd | 7347 | for (p = eh->root.dyn_relocs; p != NULL; p = p->next) |
6353d82b JW |
7348 | { |
7349 | /* If there is any pc-relative reference, we need to keep copy relocation | |
7350 | to avoid propagating the relocation into runtime that current glibc | |
7351 | does not support. */ | |
7352 | if (p->pc_count) | |
7353 | return TRUE; | |
7354 | ||
7355 | s = p->sec->output_section; | |
7356 | /* Need copy relocation if it's against read-only section. */ | |
7357 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7358 | return TRUE; | |
7359 | } | |
7360 | ||
7361 | return FALSE; | |
7362 | } | |
7363 | ||
a06ea964 NC |
7364 | /* Adjust a symbol defined by a dynamic object and referenced by a |
7365 | regular object. The current definition is in some section of the | |
7366 | dynamic object, but we're not including those sections. We have to | |
7367 | change the definition to something the rest of the link can | |
7368 | understand. */ | |
7369 | ||
7370 | static bfd_boolean | |
cec5225b | 7371 | elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info, |
a06ea964 NC |
7372 | struct elf_link_hash_entry *h) |
7373 | { | |
cec5225b | 7374 | struct elf_aarch64_link_hash_table *htab; |
5474d94f | 7375 | asection *s, *srel; |
a06ea964 NC |
7376 | |
7377 | /* If this is a function, put it in the procedure linkage table. We | |
7378 | will fill in the contents of the procedure linkage table later, | |
7379 | when we know the address of the .got section. */ | |
1419bbe5 | 7380 | if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt) |
a06ea964 NC |
7381 | { |
7382 | if (h->plt.refcount <= 0 | |
1419bbe5 WN |
7383 | || (h->type != STT_GNU_IFUNC |
7384 | && (SYMBOL_CALLS_LOCAL (info, h) | |
7385 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
7386 | && h->root.type == bfd_link_hash_undefweak)))) | |
a06ea964 NC |
7387 | { |
7388 | /* This case can occur if we saw a CALL26 reloc in | |
7389 | an input file, but the symbol wasn't referred to | |
7390 | by a dynamic object or all references were | |
7391 | garbage collected. In which case we can end up | |
7392 | resolving. */ | |
7393 | h->plt.offset = (bfd_vma) - 1; | |
7394 | h->needs_plt = 0; | |
7395 | } | |
7396 | ||
7397 | return TRUE; | |
7398 | } | |
7399 | else | |
80de0c6d | 7400 | /* Otherwise, reset to -1. */ |
a06ea964 NC |
7401 | h->plt.offset = (bfd_vma) - 1; |
7402 | ||
7403 | ||
7404 | /* If this is a weak symbol, and there is a real definition, the | |
7405 | processor independent code will have arranged for us to see the | |
7406 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 7407 | if (h->is_weakalias) |
a06ea964 | 7408 | { |
60d67dc8 AM |
7409 | struct elf_link_hash_entry *def = weakdef (h); |
7410 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
7411 | h->root.u.def.section = def->root.u.def.section; | |
7412 | h->root.u.def.value = def->root.u.def.value; | |
a06ea964 | 7413 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
60d67dc8 | 7414 | h->non_got_ref = def->non_got_ref; |
a06ea964 NC |
7415 | return TRUE; |
7416 | } | |
7417 | ||
7418 | /* If we are creating a shared library, we must presume that the | |
7419 | only references to the symbol are via the global offset table. | |
7420 | For such cases we need not do anything here; the relocations will | |
7421 | be handled correctly by relocate_section. */ | |
0e1862bb | 7422 | if (bfd_link_pic (info)) |
a06ea964 NC |
7423 | return TRUE; |
7424 | ||
7425 | /* If there are no references to this symbol that do not use the | |
7426 | GOT, we don't need to generate a copy reloc. */ | |
7427 | if (!h->non_got_ref) | |
7428 | return TRUE; | |
7429 | ||
7430 | /* If -z nocopyreloc was given, we won't generate them either. */ | |
7431 | if (info->nocopyreloc) | |
7432 | { | |
7433 | h->non_got_ref = 0; | |
7434 | return TRUE; | |
7435 | } | |
7436 | ||
6353d82b JW |
7437 | if (ELIMINATE_COPY_RELOCS) |
7438 | { | |
7439 | struct elf_aarch64_link_hash_entry *eh; | |
dce2246a | 7440 | /* If we don't find any dynamic relocs in read-only sections, then |
6353d82b JW |
7441 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
7442 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
7443 | if (!need_copy_relocation_p (eh)) | |
7444 | { | |
7445 | h->non_got_ref = 0; | |
7446 | return TRUE; | |
7447 | } | |
7448 | } | |
7449 | ||
a06ea964 NC |
7450 | /* We must allocate the symbol in our .dynbss section, which will |
7451 | become part of the .bss section of the executable. There will be | |
7452 | an entry for this symbol in the .dynsym section. The dynamic | |
7453 | object will contain position independent code, so all references | |
7454 | from the dynamic object to this symbol will go through the global | |
7455 | offset table. The dynamic linker will use the .dynsym entry to | |
7456 | determine the address it must put in the global offset table, so | |
7457 | both the dynamic object and the regular object will refer to the | |
7458 | same memory location for the variable. */ | |
7459 | ||
cec5225b | 7460 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7461 | |
7462 | /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker | |
7463 | to copy the initial value out of the dynamic object and into the | |
7464 | runtime process image. */ | |
5474d94f AM |
7465 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
7466 | { | |
7467 | s = htab->root.sdynrelro; | |
7468 | srel = htab->root.sreldynrelro; | |
7469 | } | |
7470 | else | |
7471 | { | |
7472 | s = htab->root.sdynbss; | |
7473 | srel = htab->root.srelbss; | |
7474 | } | |
a06ea964 NC |
7475 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
7476 | { | |
5474d94f | 7477 | srel->size += RELOC_SIZE (htab); |
a06ea964 NC |
7478 | h->needs_copy = 1; |
7479 | } | |
7480 | ||
6cabe1ea | 7481 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
a06ea964 NC |
7482 | |
7483 | } | |
7484 | ||
7485 | static bfd_boolean | |
cec5225b | 7486 | elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number) |
a06ea964 NC |
7487 | { |
7488 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 7489 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
7490 | if (locals == NULL) |
7491 | { | |
7492 | locals = (struct elf_aarch64_local_symbol *) | |
7493 | bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol)); | |
7494 | if (locals == NULL) | |
7495 | return FALSE; | |
cec5225b | 7496 | elf_aarch64_locals (abfd) = locals; |
a06ea964 NC |
7497 | } |
7498 | return TRUE; | |
7499 | } | |
7500 | ||
cc0efaa8 MS |
7501 | /* Create the .got section to hold the global offset table. */ |
7502 | ||
7503 | static bfd_boolean | |
7504 | aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) | |
7505 | { | |
7506 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7507 | flagword flags; | |
7508 | asection *s; | |
7509 | struct elf_link_hash_entry *h; | |
7510 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
7511 | ||
7512 | /* This function may be called more than once. */ | |
ce558b89 | 7513 | if (htab->sgot != NULL) |
cc0efaa8 MS |
7514 | return TRUE; |
7515 | ||
7516 | flags = bed->dynamic_sec_flags; | |
7517 | ||
7518 | s = bfd_make_section_anyway_with_flags (abfd, | |
7519 | (bed->rela_plts_and_copies_p | |
7520 | ? ".rela.got" : ".rel.got"), | |
7521 | (bed->dynamic_sec_flags | |
7522 | | SEC_READONLY)); | |
7523 | if (s == NULL | |
fd361982 | 7524 | || !bfd_set_section_alignment (s, bed->s->log_file_align)) |
cc0efaa8 MS |
7525 | return FALSE; |
7526 | htab->srelgot = s; | |
7527 | ||
7528 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); | |
7529 | if (s == NULL | |
fd361982 | 7530 | || !bfd_set_section_alignment (s, bed->s->log_file_align)) |
cc0efaa8 MS |
7531 | return FALSE; |
7532 | htab->sgot = s; | |
7533 | htab->sgot->size += GOT_ENTRY_SIZE; | |
7534 | ||
7535 | if (bed->want_got_sym) | |
7536 | { | |
7537 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
7538 | (or .got.plt) section. We don't do this in the linker script | |
7539 | because we don't want to define the symbol if we are not creating | |
7540 | a global offset table. */ | |
7541 | h = _bfd_elf_define_linkage_sym (abfd, info, s, | |
7542 | "_GLOBAL_OFFSET_TABLE_"); | |
7543 | elf_hash_table (info)->hgot = h; | |
7544 | if (h == NULL) | |
7545 | return FALSE; | |
7546 | } | |
7547 | ||
7548 | if (bed->want_got_plt) | |
7549 | { | |
7550 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); | |
7551 | if (s == NULL | |
fd361982 | 7552 | || !bfd_set_section_alignment (s, bed->s->log_file_align)) |
cc0efaa8 MS |
7553 | return FALSE; |
7554 | htab->sgotplt = s; | |
7555 | } | |
7556 | ||
7557 | /* The first bit of the global offset table is the header. */ | |
7558 | s->size += bed->got_header_size; | |
7559 | ||
7560 | return TRUE; | |
7561 | } | |
7562 | ||
a06ea964 NC |
7563 | /* Look through the relocs for a section during the first phase. */ |
7564 | ||
7565 | static bfd_boolean | |
cec5225b | 7566 | elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
a06ea964 NC |
7567 | asection *sec, const Elf_Internal_Rela *relocs) |
7568 | { | |
7569 | Elf_Internal_Shdr *symtab_hdr; | |
7570 | struct elf_link_hash_entry **sym_hashes; | |
7571 | const Elf_Internal_Rela *rel; | |
7572 | const Elf_Internal_Rela *rel_end; | |
7573 | asection *sreloc; | |
7574 | ||
cec5225b | 7575 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 7576 | |
0e1862bb | 7577 | if (bfd_link_relocatable (info)) |
a06ea964 NC |
7578 | return TRUE; |
7579 | ||
7580 | BFD_ASSERT (is_aarch64_elf (abfd)); | |
7581 | ||
cec5225b | 7582 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7583 | sreloc = NULL; |
7584 | ||
7585 | symtab_hdr = &elf_symtab_hdr (abfd); | |
7586 | sym_hashes = elf_sym_hashes (abfd); | |
a06ea964 NC |
7587 | |
7588 | rel_end = relocs + sec->reloc_count; | |
7589 | for (rel = relocs; rel < rel_end; rel++) | |
7590 | { | |
7591 | struct elf_link_hash_entry *h; | |
d42c267e | 7592 | unsigned int r_symndx; |
a06ea964 | 7593 | unsigned int r_type; |
a6bb11b2 | 7594 | bfd_reloc_code_real_type bfd_r_type; |
1419bbe5 | 7595 | Elf_Internal_Sym *isym; |
a06ea964 | 7596 | |
cec5225b YZ |
7597 | r_symndx = ELFNN_R_SYM (rel->r_info); |
7598 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 NC |
7599 | |
7600 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
7601 | { | |
695344c0 | 7602 | /* xgettext:c-format */ |
871b3ab2 | 7603 | _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd, r_symndx); |
a06ea964 NC |
7604 | return FALSE; |
7605 | } | |
7606 | ||
ed5acf27 | 7607 | if (r_symndx < symtab_hdr->sh_info) |
1419bbe5 WN |
7608 | { |
7609 | /* A local symbol. */ | |
f1dfbfdb | 7610 | isym = bfd_sym_from_r_symndx (&htab->root.sym_cache, |
1419bbe5 WN |
7611 | abfd, r_symndx); |
7612 | if (isym == NULL) | |
7613 | return FALSE; | |
7614 | ||
7615 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
7616 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
7617 | { | |
7618 | h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, | |
7619 | TRUE); | |
7620 | if (h == NULL) | |
7621 | return FALSE; | |
7622 | ||
7623 | /* Fake a STT_GNU_IFUNC symbol. */ | |
7624 | h->type = STT_GNU_IFUNC; | |
7625 | h->def_regular = 1; | |
7626 | h->ref_regular = 1; | |
7627 | h->forced_local = 1; | |
7628 | h->root.type = bfd_link_hash_defined; | |
7629 | } | |
7630 | else | |
7631 | h = NULL; | |
7632 | } | |
a06ea964 NC |
7633 | else |
7634 | { | |
7635 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
7636 | while (h->root.type == bfd_link_hash_indirect | |
7637 | || h->root.type == bfd_link_hash_warning) | |
7638 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7639 | } | |
7640 | ||
7641 | /* Could be done earlier, if h were already available. */ | |
a6bb11b2 | 7642 | bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx); |
a06ea964 | 7643 | |
1419bbe5 WN |
7644 | if (h != NULL) |
7645 | { | |
18f822a0 JW |
7646 | /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. |
7647 | This shows up in particular in an R_AARCH64_PREL64 in large model | |
7648 | when calculating the pc-relative address to .got section which is | |
7649 | used to initialize the gp register. */ | |
7650 | if (h->root.root.string | |
7651 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
7652 | { | |
7653 | if (htab->root.dynobj == NULL) | |
7654 | htab->root.dynobj = abfd; | |
7655 | ||
7656 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
7657 | return FALSE; | |
7658 | ||
7659 | BFD_ASSERT (h == htab->root.hgot); | |
7660 | } | |
7661 | ||
1419bbe5 WN |
7662 | /* Create the ifunc sections for static executables. If we |
7663 | never see an indirect function symbol nor we are building | |
7664 | a static executable, those sections will be empty and | |
7665 | won't appear in output. */ | |
7666 | switch (bfd_r_type) | |
7667 | { | |
7668 | default: | |
7669 | break; | |
7670 | ||
ce336788 JW |
7671 | case BFD_RELOC_AARCH64_ADD_LO12: |
7672 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: | |
7673 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
1419bbe5 | 7674 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 7675 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
1419bbe5 | 7676 | case BFD_RELOC_AARCH64_JUMP26: |
7018c030 | 7677 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
1419bbe5 | 7678 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 7679 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 7680 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
1419bbe5 | 7681 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 7682 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 7683 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
ce336788 | 7684 | case BFD_RELOC_AARCH64_NN: |
1419bbe5 WN |
7685 | if (htab->root.dynobj == NULL) |
7686 | htab->root.dynobj = abfd; | |
7687 | if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info)) | |
7688 | return FALSE; | |
7689 | break; | |
7690 | } | |
7691 | ||
2d0ca824 | 7692 | /* It is referenced by a non-shared object. */ |
1419bbe5 | 7693 | h->ref_regular = 1; |
1419bbe5 WN |
7694 | } |
7695 | ||
a6bb11b2 | 7696 | switch (bfd_r_type) |
a06ea964 | 7697 | { |
79e74192 RL |
7698 | case BFD_RELOC_AARCH64_16: |
7699 | #if ARCH_SIZE == 64 | |
7700 | case BFD_RELOC_AARCH64_32: | |
7701 | #endif | |
279b2f94 | 7702 | if (bfd_link_pic (info) && (sec->flags & SEC_ALLOC) != 0) |
79e74192 | 7703 | { |
279b2f94 RL |
7704 | if (h != NULL |
7705 | /* This is an absolute symbol. It represents a value instead | |
7706 | of an address. */ | |
c691de6a | 7707 | && (bfd_is_abs_symbol (&h->root) |
279b2f94 RL |
7708 | /* This is an undefined symbol. */ |
7709 | || h->root.type == bfd_link_hash_undefined)) | |
7710 | break; | |
7711 | ||
7712 | /* For local symbols, defined global symbols in a non-ABS section, | |
7713 | it is assumed that the value is an address. */ | |
79e74192 RL |
7714 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; |
7715 | _bfd_error_handler | |
7716 | /* xgettext:c-format */ | |
871b3ab2 | 7717 | (_("%pB: relocation %s against `%s' can not be used when making " |
79e74192 RL |
7718 | "a shared object"), |
7719 | abfd, elfNN_aarch64_howto_table[howto_index].name, | |
7720 | (h) ? h->root.root.string : "a local symbol"); | |
7721 | bfd_set_error (bfd_error_bad_value); | |
7722 | return FALSE; | |
7723 | } | |
7724 | else | |
7725 | break; | |
7726 | ||
6353d82b JW |
7727 | case BFD_RELOC_AARCH64_MOVW_G0_NC: |
7728 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
7729 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
7730 | case BFD_RELOC_AARCH64_MOVW_G3: | |
7731 | if (bfd_link_pic (info)) | |
7732 | { | |
7733 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
7734 | _bfd_error_handler | |
7735 | /* xgettext:c-format */ | |
871b3ab2 | 7736 | (_("%pB: relocation %s against `%s' can not be used when making " |
6353d82b JW |
7737 | "a shared object; recompile with -fPIC"), |
7738 | abfd, elfNN_aarch64_howto_table[howto_index].name, | |
7739 | (h) ? h->root.root.string : "a local symbol"); | |
7740 | bfd_set_error (bfd_error_bad_value); | |
7741 | return FALSE; | |
7742 | } | |
7743 | /* Fall through. */ | |
7744 | ||
7745 | case BFD_RELOC_AARCH64_16_PCREL: | |
7746 | case BFD_RELOC_AARCH64_32_PCREL: | |
7747 | case BFD_RELOC_AARCH64_64_PCREL: | |
7748 | case BFD_RELOC_AARCH64_ADD_LO12: | |
7749 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: | |
7750 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
7751 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
7752 | case BFD_RELOC_AARCH64_LDST128_LO12: | |
7753 | case BFD_RELOC_AARCH64_LDST16_LO12: | |
7754 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
7755 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
7756 | case BFD_RELOC_AARCH64_LDST8_LO12: | |
7757 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
7758 | if (h == NULL || bfd_link_pic (info)) | |
7759 | break; | |
7760 | /* Fall through. */ | |
7761 | ||
a6bb11b2 | 7762 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
7763 | |
7764 | /* We don't need to handle relocs into sections not going into | |
7765 | the "real" output. */ | |
7766 | if ((sec->flags & SEC_ALLOC) == 0) | |
7767 | break; | |
7768 | ||
7769 | if (h != NULL) | |
7770 | { | |
0e1862bb | 7771 | if (!bfd_link_pic (info)) |
a06ea964 NC |
7772 | h->non_got_ref = 1; |
7773 | ||
7774 | h->plt.refcount += 1; | |
7775 | h->pointer_equality_needed = 1; | |
7776 | } | |
7777 | ||
7778 | /* No need to do anything if we're not creating a shared | |
7779 | object. */ | |
6353d82b JW |
7780 | if (!(bfd_link_pic (info) |
7781 | /* If on the other hand, we are creating an executable, we | |
7782 | may need to keep relocations for symbols satisfied by a | |
7783 | dynamic library if we manage to avoid copy relocs for the | |
7784 | symbol. | |
7785 | ||
7786 | NOTE: Currently, there is no support of copy relocs | |
7787 | elimination on pc-relative relocation types, because there is | |
7788 | no dynamic relocation support for them in glibc. We still | |
7789 | record the dynamic symbol reference for them. This is | |
7790 | because one symbol may be referenced by both absolute | |
7791 | relocation (for example, BFD_RELOC_AARCH64_NN) and | |
7792 | pc-relative relocation. We need full symbol reference | |
7793 | information to make correct decision later in | |
7794 | elfNN_aarch64_adjust_dynamic_symbol. */ | |
7795 | || (ELIMINATE_COPY_RELOCS | |
7796 | && !bfd_link_pic (info) | |
7797 | && h != NULL | |
7798 | && (h->root.type == bfd_link_hash_defweak | |
7799 | || !h->def_regular)))) | |
a06ea964 NC |
7800 | break; |
7801 | ||
7802 | { | |
7803 | struct elf_dyn_relocs *p; | |
7804 | struct elf_dyn_relocs **head; | |
6353d82b | 7805 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; |
a06ea964 NC |
7806 | |
7807 | /* We must copy these reloc types into the output file. | |
7808 | Create a reloc section in dynobj and make room for | |
7809 | this reloc. */ | |
7810 | if (sreloc == NULL) | |
7811 | { | |
7812 | if (htab->root.dynobj == NULL) | |
7813 | htab->root.dynobj = abfd; | |
7814 | ||
7815 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
0608afa7 | 7816 | (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE); |
a06ea964 NC |
7817 | |
7818 | if (sreloc == NULL) | |
7819 | return FALSE; | |
7820 | } | |
7821 | ||
7822 | /* If this is a global symbol, we count the number of | |
7823 | relocations we need for this symbol. */ | |
7824 | if (h != NULL) | |
7825 | { | |
190eb1dd | 7826 | head = &h->dyn_relocs; |
a06ea964 NC |
7827 | } |
7828 | else | |
7829 | { | |
7830 | /* Track dynamic relocs needed for local syms too. | |
7831 | We really need local syms available to do this | |
7832 | easily. Oh well. */ | |
7833 | ||
7834 | asection *s; | |
7835 | void **vpp; | |
a06ea964 | 7836 | |
f1dfbfdb | 7837 | isym = bfd_sym_from_r_symndx (&htab->root.sym_cache, |
a06ea964 NC |
7838 | abfd, r_symndx); |
7839 | if (isym == NULL) | |
7840 | return FALSE; | |
7841 | ||
7842 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
7843 | if (s == NULL) | |
7844 | s = sec; | |
7845 | ||
7846 | /* Beware of type punned pointers vs strict aliasing | |
7847 | rules. */ | |
7848 | vpp = &(elf_section_data (s)->local_dynrel); | |
7849 | head = (struct elf_dyn_relocs **) vpp; | |
7850 | } | |
7851 | ||
7852 | p = *head; | |
7853 | if (p == NULL || p->sec != sec) | |
7854 | { | |
986f0783 | 7855 | size_t amt = sizeof *p; |
a06ea964 NC |
7856 | p = ((struct elf_dyn_relocs *) |
7857 | bfd_zalloc (htab->root.dynobj, amt)); | |
7858 | if (p == NULL) | |
7859 | return FALSE; | |
7860 | p->next = *head; | |
7861 | *head = p; | |
7862 | p->sec = sec; | |
7863 | } | |
7864 | ||
7865 | p->count += 1; | |
7866 | ||
6353d82b JW |
7867 | if (elfNN_aarch64_howto_table[howto_index].pc_relative) |
7868 | p->pc_count += 1; | |
a06ea964 NC |
7869 | } |
7870 | break; | |
7871 | ||
7872 | /* RR: We probably want to keep a consistency check that | |
7873 | there are no dangling GOT_PAGE relocs. */ | |
a6bb11b2 | 7874 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
7bcccb57 | 7875 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
7018c030 | 7876 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
7bcccb57 | 7877 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 7878 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 7879 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
7bcccb57 | 7880 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 7881 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 7882 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
f955cccf | 7883 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
7bcccb57 | 7884 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 7885 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
7bcccb57 | 7886 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
f955cccf | 7887 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
1ada945d | 7888 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
7889 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
7890 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a6bb11b2 | 7891 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
7bcccb57 | 7892 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 7893 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 7894 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 7895 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
a6bb11b2 | 7896 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 7897 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
7bcccb57 | 7898 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 7899 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
7900 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
7901 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
73f925cc | 7902 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 7903 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 7904 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
7905 | { |
7906 | unsigned got_type; | |
7907 | unsigned old_got_type; | |
7908 | ||
a6bb11b2 | 7909 | got_type = aarch64_reloc_got_type (bfd_r_type); |
a06ea964 NC |
7910 | |
7911 | if (h) | |
7912 | { | |
7913 | h->got.refcount += 1; | |
cec5225b | 7914 | old_got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
7915 | } |
7916 | else | |
7917 | { | |
7918 | struct elf_aarch64_local_symbol *locals; | |
7919 | ||
cec5225b | 7920 | if (!elfNN_aarch64_allocate_local_symbols |
a06ea964 NC |
7921 | (abfd, symtab_hdr->sh_info)) |
7922 | return FALSE; | |
7923 | ||
cec5225b | 7924 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
7925 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
7926 | locals[r_symndx].got_refcount += 1; | |
7927 | old_got_type = locals[r_symndx].got_type; | |
7928 | } | |
7929 | ||
7930 | /* If a variable is accessed with both general dynamic TLS | |
7931 | methods, two slots may be created. */ | |
7932 | if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type)) | |
7933 | got_type |= old_got_type; | |
7934 | ||
7935 | /* We will already have issued an error message if there | |
7936 | is a TLS/non-TLS mismatch, based on the symbol type. | |
7937 | So just combine any TLS types needed. */ | |
7938 | if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL | |
7939 | && got_type != GOT_NORMAL) | |
7940 | got_type |= old_got_type; | |
7941 | ||
7942 | /* If the symbol is accessed by both IE and GD methods, we | |
7943 | are able to relax. Turn off the GD flag, without | |
7944 | messing up with any other kind of TLS types that may be | |
7945 | involved. */ | |
7946 | if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type)) | |
7947 | got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD); | |
7948 | ||
7949 | if (old_got_type != got_type) | |
7950 | { | |
7951 | if (h != NULL) | |
cec5225b | 7952 | elf_aarch64_hash_entry (h)->got_type = got_type; |
a06ea964 NC |
7953 | else |
7954 | { | |
7955 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 7956 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
7957 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
7958 | locals[r_symndx].got_type = got_type; | |
7959 | } | |
7960 | } | |
7961 | ||
cc0efaa8 MS |
7962 | if (htab->root.dynobj == NULL) |
7963 | htab->root.dynobj = abfd; | |
7964 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
7965 | return FALSE; | |
a06ea964 NC |
7966 | break; |
7967 | } | |
7968 | ||
7e057737 SP |
7969 | case BFD_RELOC_AARCH64_BRANCH19: |
7970 | case BFD_RELOC_AARCH64_TSTBR14: | |
a6bb11b2 YZ |
7971 | case BFD_RELOC_AARCH64_CALL26: |
7972 | case BFD_RELOC_AARCH64_JUMP26: | |
a06ea964 NC |
7973 | /* If this is a local symbol then we resolve it |
7974 | directly without creating a PLT entry. */ | |
7975 | if (h == NULL) | |
7976 | continue; | |
7977 | ||
7978 | h->needs_plt = 1; | |
1419bbe5 WN |
7979 | if (h->plt.refcount <= 0) |
7980 | h->plt.refcount = 1; | |
7981 | else | |
7982 | h->plt.refcount += 1; | |
a06ea964 | 7983 | break; |
a6bb11b2 YZ |
7984 | |
7985 | default: | |
7986 | break; | |
a06ea964 NC |
7987 | } |
7988 | } | |
a6bb11b2 | 7989 | |
a06ea964 NC |
7990 | return TRUE; |
7991 | } | |
7992 | ||
7993 | /* Treat mapping symbols as special target symbols. */ | |
7994 | ||
7995 | static bfd_boolean | |
cec5225b | 7996 | elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
7997 | asymbol *sym) |
7998 | { | |
7999 | return bfd_is_aarch64_special_symbol_name (sym->name, | |
8000 | BFD_AARCH64_SPECIAL_SYM_TYPE_ANY); | |
8001 | } | |
8002 | ||
e7679060 AM |
8003 | /* If the ELF symbol SYM might be a function in SEC, return the |
8004 | function size and set *CODE_OFF to the function's entry point, | |
8005 | otherwise return zero. */ | |
a06ea964 | 8006 | |
e7679060 AM |
8007 | static bfd_size_type |
8008 | elfNN_aarch64_maybe_function_sym (const asymbol *sym, asection *sec, | |
8009 | bfd_vma *code_off) | |
8010 | { | |
8011 | bfd_size_type size; | |
a06ea964 | 8012 | |
e7679060 AM |
8013 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT |
8014 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0 | |
8015 | || sym->section != sec) | |
8016 | return 0; | |
a06ea964 | 8017 | |
e7679060 AM |
8018 | if (!(sym->flags & BSF_SYNTHETIC)) |
8019 | switch (ELF_ST_TYPE (((elf_symbol_type *) sym)->internal_elf_sym.st_info)) | |
8020 | { | |
a06ea964 NC |
8021 | case STT_FUNC: |
8022 | case STT_NOTYPE: | |
a06ea964 | 8023 | break; |
e7679060 AM |
8024 | default: |
8025 | return 0; | |
8026 | } | |
a06ea964 | 8027 | |
e7679060 AM |
8028 | if ((sym->flags & BSF_LOCAL) |
8029 | && bfd_is_aarch64_special_symbol_name (sym->name, | |
8030 | BFD_AARCH64_SPECIAL_SYM_TYPE_ANY)) | |
8031 | return 0; | |
a06ea964 | 8032 | |
e7679060 AM |
8033 | *code_off = sym->value; |
8034 | size = 0; | |
8035 | if (!(sym->flags & BSF_SYNTHETIC)) | |
8036 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
8037 | if (size == 0) | |
8038 | size = 1; | |
8039 | return size; | |
a06ea964 NC |
8040 | } |
8041 | ||
8042 | static bfd_boolean | |
cec5225b | 8043 | elfNN_aarch64_find_inliner_info (bfd *abfd, |
a06ea964 NC |
8044 | const char **filename_ptr, |
8045 | const char **functionname_ptr, | |
8046 | unsigned int *line_ptr) | |
8047 | { | |
8048 | bfd_boolean found; | |
8049 | found = _bfd_dwarf2_find_inliner_info | |
8050 | (abfd, filename_ptr, | |
8051 | functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info); | |
8052 | return found; | |
8053 | } | |
8054 | ||
8055 | ||
ed7e9d0b AM |
8056 | static bfd_boolean |
8057 | elfNN_aarch64_init_file_header (bfd *abfd, struct bfd_link_info *link_info) | |
a06ea964 NC |
8058 | { |
8059 | Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */ | |
8060 | ||
ed7e9d0b AM |
8061 | if (!_bfd_elf_init_file_header (abfd, link_info)) |
8062 | return FALSE; | |
8063 | ||
a06ea964 | 8064 | i_ehdrp = elf_elfheader (abfd); |
a06ea964 | 8065 | i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION; |
ed7e9d0b | 8066 | return TRUE; |
a06ea964 NC |
8067 | } |
8068 | ||
8069 | static enum elf_reloc_type_class | |
cec5225b | 8070 | elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
7e612e98 AM |
8071 | const asection *rel_sec ATTRIBUTE_UNUSED, |
8072 | const Elf_Internal_Rela *rela) | |
a06ea964 | 8073 | { |
f2e6a843 SN |
8074 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); |
8075 | ||
8076 | if (htab->root.dynsym != NULL | |
8077 | && htab->root.dynsym->contents != NULL) | |
8078 | { | |
8079 | /* Check relocation against STT_GNU_IFUNC symbol if there are | |
8080 | dynamic symbols. */ | |
8081 | bfd *abfd = info->output_bfd; | |
8082 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8083 | unsigned long r_symndx = ELFNN_R_SYM (rela->r_info); | |
8084 | if (r_symndx != STN_UNDEF) | |
8085 | { | |
8086 | Elf_Internal_Sym sym; | |
8087 | if (!bed->s->swap_symbol_in (abfd, | |
8088 | (htab->root.dynsym->contents | |
8089 | + r_symndx * bed->s->sizeof_sym), | |
8090 | 0, &sym)) | |
8091 | { | |
8092 | /* xgettext:c-format */ | |
871b3ab2 | 8093 | _bfd_error_handler (_("%pB symbol number %lu references" |
f2e6a843 SN |
8094 | " nonexistent SHT_SYMTAB_SHNDX section"), |
8095 | abfd, r_symndx); | |
8096 | /* Ideally an error class should be returned here. */ | |
8097 | } | |
8098 | else if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC) | |
8099 | return reloc_class_ifunc; | |
8100 | } | |
8101 | } | |
8102 | ||
cec5225b | 8103 | switch ((int) ELFNN_R_TYPE (rela->r_info)) |
a06ea964 | 8104 | { |
f2e6a843 SN |
8105 | case AARCH64_R (IRELATIVE): |
8106 | return reloc_class_ifunc; | |
a6bb11b2 | 8107 | case AARCH64_R (RELATIVE): |
a06ea964 | 8108 | return reloc_class_relative; |
a6bb11b2 | 8109 | case AARCH64_R (JUMP_SLOT): |
a06ea964 | 8110 | return reloc_class_plt; |
a6bb11b2 | 8111 | case AARCH64_R (COPY): |
a06ea964 NC |
8112 | return reloc_class_copy; |
8113 | default: | |
8114 | return reloc_class_normal; | |
8115 | } | |
8116 | } | |
8117 | ||
a06ea964 NC |
8118 | /* Handle an AArch64 specific section when reading an object file. This is |
8119 | called when bfd_section_from_shdr finds a section with an unknown | |
8120 | type. */ | |
8121 | ||
8122 | static bfd_boolean | |
cec5225b | 8123 | elfNN_aarch64_section_from_shdr (bfd *abfd, |
a06ea964 NC |
8124 | Elf_Internal_Shdr *hdr, |
8125 | const char *name, int shindex) | |
8126 | { | |
8127 | /* There ought to be a place to keep ELF backend specific flags, but | |
8128 | at the moment there isn't one. We just keep track of the | |
8129 | sections by their name, instead. Fortunately, the ABI gives | |
8130 | names for all the AArch64 specific sections, so we will probably get | |
8131 | away with this. */ | |
8132 | switch (hdr->sh_type) | |
8133 | { | |
8134 | case SHT_AARCH64_ATTRIBUTES: | |
8135 | break; | |
8136 | ||
8137 | default: | |
8138 | return FALSE; | |
8139 | } | |
8140 | ||
8141 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
8142 | return FALSE; | |
8143 | ||
8144 | return TRUE; | |
8145 | } | |
8146 | ||
8147 | /* A structure used to record a list of sections, independently | |
8148 | of the next and prev fields in the asection structure. */ | |
8149 | typedef struct section_list | |
8150 | { | |
8151 | asection *sec; | |
8152 | struct section_list *next; | |
8153 | struct section_list *prev; | |
8154 | } | |
8155 | section_list; | |
8156 | ||
8157 | /* Unfortunately we need to keep a list of sections for which | |
8158 | an _aarch64_elf_section_data structure has been allocated. This | |
cec5225b | 8159 | is because it is possible for functions like elfNN_aarch64_write_section |
a06ea964 NC |
8160 | to be called on a section which has had an elf_data_structure |
8161 | allocated for it (and so the used_by_bfd field is valid) but | |
8162 | for which the AArch64 extended version of this structure - the | |
8163 | _aarch64_elf_section_data structure - has not been allocated. */ | |
8164 | static section_list *sections_with_aarch64_elf_section_data = NULL; | |
8165 | ||
8166 | static void | |
8167 | record_section_with_aarch64_elf_section_data (asection *sec) | |
8168 | { | |
8169 | struct section_list *entry; | |
8170 | ||
8171 | entry = bfd_malloc (sizeof (*entry)); | |
8172 | if (entry == NULL) | |
8173 | return; | |
8174 | entry->sec = sec; | |
8175 | entry->next = sections_with_aarch64_elf_section_data; | |
8176 | entry->prev = NULL; | |
8177 | if (entry->next != NULL) | |
8178 | entry->next->prev = entry; | |
8179 | sections_with_aarch64_elf_section_data = entry; | |
8180 | } | |
8181 | ||
8182 | static struct section_list * | |
8183 | find_aarch64_elf_section_entry (asection *sec) | |
8184 | { | |
8185 | struct section_list *entry; | |
8186 | static struct section_list *last_entry = NULL; | |
8187 | ||
8188 | /* This is a short cut for the typical case where the sections are added | |
8189 | to the sections_with_aarch64_elf_section_data list in forward order and | |
8190 | then looked up here in backwards order. This makes a real difference | |
8191 | to the ld-srec/sec64k.exp linker test. */ | |
8192 | entry = sections_with_aarch64_elf_section_data; | |
8193 | if (last_entry != NULL) | |
8194 | { | |
8195 | if (last_entry->sec == sec) | |
8196 | entry = last_entry; | |
8197 | else if (last_entry->next != NULL && last_entry->next->sec == sec) | |
8198 | entry = last_entry->next; | |
8199 | } | |
8200 | ||
8201 | for (; entry; entry = entry->next) | |
8202 | if (entry->sec == sec) | |
8203 | break; | |
8204 | ||
8205 | if (entry) | |
8206 | /* Record the entry prior to this one - it is the entry we are | |
8207 | most likely to want to locate next time. Also this way if we | |
8208 | have been called from | |
8209 | unrecord_section_with_aarch64_elf_section_data () we will not | |
8210 | be caching a pointer that is about to be freed. */ | |
8211 | last_entry = entry->prev; | |
8212 | ||
8213 | return entry; | |
8214 | } | |
8215 | ||
8216 | static void | |
8217 | unrecord_section_with_aarch64_elf_section_data (asection *sec) | |
8218 | { | |
8219 | struct section_list *entry; | |
8220 | ||
8221 | entry = find_aarch64_elf_section_entry (sec); | |
8222 | ||
8223 | if (entry) | |
8224 | { | |
8225 | if (entry->prev != NULL) | |
8226 | entry->prev->next = entry->next; | |
8227 | if (entry->next != NULL) | |
8228 | entry->next->prev = entry->prev; | |
8229 | if (entry == sections_with_aarch64_elf_section_data) | |
8230 | sections_with_aarch64_elf_section_data = entry->next; | |
8231 | free (entry); | |
8232 | } | |
8233 | } | |
8234 | ||
8235 | ||
8236 | typedef struct | |
8237 | { | |
8238 | void *finfo; | |
8239 | struct bfd_link_info *info; | |
8240 | asection *sec; | |
8241 | int sec_shndx; | |
8242 | int (*func) (void *, const char *, Elf_Internal_Sym *, | |
8243 | asection *, struct elf_link_hash_entry *); | |
8244 | } output_arch_syminfo; | |
8245 | ||
8246 | enum map_symbol_type | |
8247 | { | |
8248 | AARCH64_MAP_INSN, | |
8249 | AARCH64_MAP_DATA | |
8250 | }; | |
8251 | ||
8252 | ||
8253 | /* Output a single mapping symbol. */ | |
8254 | ||
8255 | static bfd_boolean | |
cec5225b | 8256 | elfNN_aarch64_output_map_sym (output_arch_syminfo *osi, |
a06ea964 NC |
8257 | enum map_symbol_type type, bfd_vma offset) |
8258 | { | |
8259 | static const char *names[2] = { "$x", "$d" }; | |
8260 | Elf_Internal_Sym sym; | |
8261 | ||
8262 | sym.st_value = (osi->sec->output_section->vma | |
8263 | + osi->sec->output_offset + offset); | |
8264 | sym.st_size = 0; | |
8265 | sym.st_other = 0; | |
8266 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
8267 | sym.st_shndx = osi->sec_shndx; | |
8268 | return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1; | |
8269 | } | |
8270 | ||
a06ea964 NC |
8271 | /* Output a single local symbol for a generated stub. */ |
8272 | ||
8273 | static bfd_boolean | |
cec5225b | 8274 | elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name, |
a06ea964 NC |
8275 | bfd_vma offset, bfd_vma size) |
8276 | { | |
8277 | Elf_Internal_Sym sym; | |
8278 | ||
8279 | sym.st_value = (osi->sec->output_section->vma | |
8280 | + osi->sec->output_offset + offset); | |
8281 | sym.st_size = size; | |
8282 | sym.st_other = 0; | |
8283 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
8284 | sym.st_shndx = osi->sec_shndx; | |
8285 | return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1; | |
8286 | } | |
8287 | ||
8288 | static bfd_boolean | |
8289 | aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) | |
8290 | { | |
cec5225b | 8291 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
8292 | asection *stub_sec; |
8293 | bfd_vma addr; | |
8294 | char *stub_name; | |
8295 | output_arch_syminfo *osi; | |
8296 | ||
8297 | /* Massage our args to the form they really have. */ | |
cec5225b | 8298 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
8299 | osi = (output_arch_syminfo *) in_arg; |
8300 | ||
8301 | stub_sec = stub_entry->stub_sec; | |
8302 | ||
8303 | /* Ensure this stub is attached to the current section being | |
8304 | processed. */ | |
8305 | if (stub_sec != osi->sec) | |
8306 | return TRUE; | |
8307 | ||
8308 | addr = (bfd_vma) stub_entry->stub_offset; | |
8309 | ||
8310 | stub_name = stub_entry->output_name; | |
8311 | ||
8312 | switch (stub_entry->stub_type) | |
8313 | { | |
8314 | case aarch64_stub_adrp_branch: | |
cec5225b | 8315 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, |
a06ea964 NC |
8316 | sizeof (aarch64_adrp_branch_stub))) |
8317 | return FALSE; | |
cec5225b | 8318 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 NC |
8319 | return FALSE; |
8320 | break; | |
8321 | case aarch64_stub_long_branch: | |
cec5225b | 8322 | if (!elfNN_aarch64_output_stub_sym |
a06ea964 NC |
8323 | (osi, stub_name, addr, sizeof (aarch64_long_branch_stub))) |
8324 | return FALSE; | |
cec5225b | 8325 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 | 8326 | return FALSE; |
cec5225b | 8327 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16)) |
a06ea964 NC |
8328 | return FALSE; |
8329 | break; | |
68fcca92 JW |
8330 | case aarch64_stub_erratum_835769_veneer: |
8331 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
8332 | sizeof (aarch64_erratum_835769_stub))) | |
8333 | return FALSE; | |
8334 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
8335 | return FALSE; | |
8336 | break; | |
4106101c MS |
8337 | case aarch64_stub_erratum_843419_veneer: |
8338 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
8339 | sizeof (aarch64_erratum_843419_stub))) | |
8340 | return FALSE; | |
8341 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
8342 | return FALSE; | |
8343 | break; | |
9fca35fc TC |
8344 | case aarch64_stub_none: |
8345 | break; | |
4106101c | 8346 | |
a06ea964 | 8347 | default: |
8e2fe09f | 8348 | abort (); |
a06ea964 NC |
8349 | } |
8350 | ||
8351 | return TRUE; | |
8352 | } | |
8353 | ||
8354 | /* Output mapping symbols for linker generated sections. */ | |
8355 | ||
8356 | static bfd_boolean | |
cec5225b | 8357 | elfNN_aarch64_output_arch_local_syms (bfd *output_bfd, |
a06ea964 NC |
8358 | struct bfd_link_info *info, |
8359 | void *finfo, | |
8360 | int (*func) (void *, const char *, | |
8361 | Elf_Internal_Sym *, | |
8362 | asection *, | |
8363 | struct elf_link_hash_entry | |
8364 | *)) | |
8365 | { | |
8366 | output_arch_syminfo osi; | |
cec5225b | 8367 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 8368 | |
cec5225b | 8369 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
8370 | |
8371 | osi.finfo = finfo; | |
8372 | osi.info = info; | |
8373 | osi.func = func; | |
8374 | ||
8375 | /* Long calls stubs. */ | |
8376 | if (htab->stub_bfd && htab->stub_bfd->sections) | |
8377 | { | |
8378 | asection *stub_sec; | |
8379 | ||
8380 | for (stub_sec = htab->stub_bfd->sections; | |
8381 | stub_sec != NULL; stub_sec = stub_sec->next) | |
8382 | { | |
8383 | /* Ignore non-stub sections. */ | |
8384 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
8385 | continue; | |
8386 | ||
8387 | osi.sec = stub_sec; | |
8388 | ||
8389 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
8390 | (output_bfd, osi.sec->output_section); | |
8391 | ||
61865519 MS |
8392 | /* The first instruction in a stub is always a branch. */ |
8393 | if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0)) | |
8394 | return FALSE; | |
8395 | ||
a06ea964 NC |
8396 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub, |
8397 | &osi); | |
8398 | } | |
8399 | } | |
8400 | ||
8401 | /* Finally, output mapping symbols for the PLT. */ | |
8402 | if (!htab->root.splt || htab->root.splt->size == 0) | |
8403 | return TRUE; | |
8404 | ||
a06ea964 NC |
8405 | osi.sec_shndx = _bfd_elf_section_from_bfd_section |
8406 | (output_bfd, htab->root.splt->output_section); | |
8407 | osi.sec = htab->root.splt; | |
8408 | ||
73524045 | 8409 | elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0); |
a06ea964 NC |
8410 | |
8411 | return TRUE; | |
8412 | ||
8413 | } | |
8414 | ||
8415 | /* Allocate target specific section data. */ | |
8416 | ||
8417 | static bfd_boolean | |
cec5225b | 8418 | elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec) |
a06ea964 NC |
8419 | { |
8420 | if (!sec->used_by_bfd) | |
8421 | { | |
8422 | _aarch64_elf_section_data *sdata; | |
986f0783 | 8423 | size_t amt = sizeof (*sdata); |
a06ea964 NC |
8424 | |
8425 | sdata = bfd_zalloc (abfd, amt); | |
8426 | if (sdata == NULL) | |
8427 | return FALSE; | |
8428 | sec->used_by_bfd = sdata; | |
8429 | } | |
8430 | ||
8431 | record_section_with_aarch64_elf_section_data (sec); | |
8432 | ||
8433 | return _bfd_elf_new_section_hook (abfd, sec); | |
8434 | } | |
8435 | ||
8436 | ||
8437 | static void | |
8438 | unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
8439 | asection *sec, | |
8440 | void *ignore ATTRIBUTE_UNUSED) | |
8441 | { | |
8442 | unrecord_section_with_aarch64_elf_section_data (sec); | |
8443 | } | |
8444 | ||
8445 | static bfd_boolean | |
cec5225b | 8446 | elfNN_aarch64_close_and_cleanup (bfd *abfd) |
a06ea964 NC |
8447 | { |
8448 | if (abfd->sections) | |
8449 | bfd_map_over_sections (abfd, | |
8450 | unrecord_section_via_map_over_sections, NULL); | |
8451 | ||
8452 | return _bfd_elf_close_and_cleanup (abfd); | |
8453 | } | |
8454 | ||
8455 | static bfd_boolean | |
cec5225b | 8456 | elfNN_aarch64_bfd_free_cached_info (bfd *abfd) |
a06ea964 NC |
8457 | { |
8458 | if (abfd->sections) | |
8459 | bfd_map_over_sections (abfd, | |
8460 | unrecord_section_via_map_over_sections, NULL); | |
8461 | ||
8462 | return _bfd_free_cached_info (abfd); | |
8463 | } | |
8464 | ||
a06ea964 NC |
8465 | /* Create dynamic sections. This is different from the ARM backend in that |
8466 | the got, plt, gotplt and their relocation sections are all created in the | |
8467 | standard part of the bfd elf backend. */ | |
8468 | ||
8469 | static bfd_boolean | |
cec5225b | 8470 | elfNN_aarch64_create_dynamic_sections (bfd *dynobj, |
a06ea964 NC |
8471 | struct bfd_link_info *info) |
8472 | { | |
cc0efaa8 MS |
8473 | /* We need to create .got section. */ |
8474 | if (!aarch64_elf_create_got_section (dynobj, info)) | |
8475 | return FALSE; | |
a06ea964 | 8476 | |
9d19e4fd | 8477 | return _bfd_elf_create_dynamic_sections (dynobj, info); |
a06ea964 NC |
8478 | } |
8479 | ||
8480 | ||
8481 | /* Allocate space in .plt, .got and associated reloc sections for | |
8482 | dynamic relocs. */ | |
8483 | ||
8484 | static bfd_boolean | |
cec5225b | 8485 | elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
a06ea964 NC |
8486 | { |
8487 | struct bfd_link_info *info; | |
cec5225b YZ |
8488 | struct elf_aarch64_link_hash_table *htab; |
8489 | struct elf_aarch64_link_hash_entry *eh; | |
a06ea964 NC |
8490 | struct elf_dyn_relocs *p; |
8491 | ||
8492 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
8493 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
8494 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
8495 | ||
8496 | There is no need to process bfd_link_hash_indirect symbols here | |
8497 | because we will also be presented with the concrete instance of | |
cec5225b | 8498 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been |
a06ea964 | 8499 | called to copy all relevant data from the generic to the concrete |
2d0ca824 | 8500 | symbol instance. */ |
a06ea964 NC |
8501 | if (h->root.type == bfd_link_hash_indirect) |
8502 | return TRUE; | |
8503 | ||
8504 | if (h->root.type == bfd_link_hash_warning) | |
8505 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8506 | ||
8507 | info = (struct bfd_link_info *) inf; | |
cec5225b | 8508 | htab = elf_aarch64_hash_table (info); |
a06ea964 | 8509 | |
1419bbe5 WN |
8510 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
8511 | here if it is defined and referenced in a non-shared object. */ | |
8512 | if (h->type == STT_GNU_IFUNC | |
8513 | && h->def_regular) | |
8514 | return TRUE; | |
8515 | else if (htab->root.dynamic_sections_created && h->plt.refcount > 0) | |
a06ea964 NC |
8516 | { |
8517 | /* Make sure this symbol is output as a dynamic symbol. | |
07d6d2b8 | 8518 | Undefined weak syms won't yet be marked as dynamic. */ |
ff07562f JW |
8519 | if (h->dynindx == -1 && !h->forced_local |
8520 | && h->root.type == bfd_link_hash_undefweak) | |
a06ea964 NC |
8521 | { |
8522 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
8523 | return FALSE; | |
8524 | } | |
8525 | ||
0e1862bb | 8526 | if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
a06ea964 NC |
8527 | { |
8528 | asection *s = htab->root.splt; | |
8529 | ||
8530 | /* If this is the first .plt entry, make room for the special | |
8531 | first entry. */ | |
8532 | if (s->size == 0) | |
8533 | s->size += htab->plt_header_size; | |
8534 | ||
8535 | h->plt.offset = s->size; | |
8536 | ||
8537 | /* If this symbol is not defined in a regular file, and we are | |
8538 | not generating a shared library, then set the symbol to this | |
8539 | location in the .plt. This is required to make function | |
8540 | pointers compare as equal between the normal executable and | |
8541 | the shared library. */ | |
0e1862bb | 8542 | if (!bfd_link_pic (info) && !h->def_regular) |
a06ea964 NC |
8543 | { |
8544 | h->root.u.def.section = s; | |
8545 | h->root.u.def.value = h->plt.offset; | |
8546 | } | |
8547 | ||
8548 | /* Make room for this entry. For now we only create the | |
8549 | small model PLT entries. We later need to find a way | |
8550 | of relaxing into these from the large model PLT entries. */ | |
37c18eed | 8551 | s->size += htab->plt_entry_size; |
a06ea964 NC |
8552 | |
8553 | /* We also need to make an entry in the .got.plt section, which | |
8554 | will be placed in the .got section by the linker script. */ | |
8555 | htab->root.sgotplt->size += GOT_ENTRY_SIZE; | |
8556 | ||
8557 | /* We also need to make an entry in the .rela.plt section. */ | |
8558 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8559 | ||
8560 | /* We need to ensure that all GOT entries that serve the PLT | |
8561 | are consecutive with the special GOT slots [0] [1] and | |
8562 | [2]. Any addtional relocations, such as | |
8563 | R_AARCH64_TLSDESC, must be placed after the PLT related | |
8564 | entries. We abuse the reloc_count such that during | |
8565 | sizing we adjust reloc_count to indicate the number of | |
8566 | PLT related reserved entries. In subsequent phases when | |
8567 | filling in the contents of the reloc entries, PLT related | |
8568 | entries are placed by computing their PLT index (0 | |
8569 | .. reloc_count). While other none PLT relocs are placed | |
8570 | at the slot indicated by reloc_count and reloc_count is | |
8571 | updated. */ | |
8572 | ||
8573 | htab->root.srelplt->reloc_count++; | |
823710d5 SN |
8574 | |
8575 | /* Mark the DSO in case R_<CLS>_JUMP_SLOT relocs against | |
8576 | variant PCS symbols are present. */ | |
8577 | if (h->other & STO_AARCH64_VARIANT_PCS) | |
8578 | htab->variant_pcs = 1; | |
8579 | ||
a06ea964 NC |
8580 | } |
8581 | else | |
8582 | { | |
8583 | h->plt.offset = (bfd_vma) - 1; | |
8584 | h->needs_plt = 0; | |
8585 | } | |
8586 | } | |
8587 | else | |
8588 | { | |
8589 | h->plt.offset = (bfd_vma) - 1; | |
8590 | h->needs_plt = 0; | |
8591 | } | |
8592 | ||
cec5225b | 8593 | eh = (struct elf_aarch64_link_hash_entry *) h; |
a06ea964 NC |
8594 | eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; |
8595 | ||
8596 | if (h->got.refcount > 0) | |
8597 | { | |
8598 | bfd_boolean dyn; | |
cec5225b | 8599 | unsigned got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
8600 | |
8601 | h->got.offset = (bfd_vma) - 1; | |
8602 | ||
8603 | dyn = htab->root.dynamic_sections_created; | |
8604 | ||
8605 | /* Make sure this symbol is output as a dynamic symbol. | |
07d6d2b8 | 8606 | Undefined weak syms won't yet be marked as dynamic. */ |
ff07562f JW |
8607 | if (dyn && h->dynindx == -1 && !h->forced_local |
8608 | && h->root.type == bfd_link_hash_undefweak) | |
a06ea964 NC |
8609 | { |
8610 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
8611 | return FALSE; | |
8612 | } | |
8613 | ||
8614 | if (got_type == GOT_UNKNOWN) | |
8615 | { | |
8616 | } | |
8617 | else if (got_type == GOT_NORMAL) | |
8618 | { | |
8619 | h->got.offset = htab->root.sgot->size; | |
8620 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8621 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8622 | || h->root.type != bfd_link_hash_undefweak) | |
0e1862bb | 8623 | && (bfd_link_pic (info) |
a377ae2a SN |
8624 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) |
8625 | /* Undefined weak symbol in static PIE resolves to 0 without | |
8626 | any dynamic relocations. */ | |
8627 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
a06ea964 NC |
8628 | { |
8629 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
8630 | } | |
8631 | } | |
8632 | else | |
8633 | { | |
8634 | int indx; | |
8635 | if (got_type & GOT_TLSDESC_GD) | |
8636 | { | |
8637 | eh->tlsdesc_got_jump_table_offset = | |
8638 | (htab->root.sgotplt->size | |
8639 | - aarch64_compute_jump_table_size (htab)); | |
8640 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
8641 | h->got.offset = (bfd_vma) - 2; | |
8642 | } | |
8643 | ||
8644 | if (got_type & GOT_TLS_GD) | |
8645 | { | |
8646 | h->got.offset = htab->root.sgot->size; | |
8647 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
8648 | } | |
8649 | ||
8650 | if (got_type & GOT_TLS_IE) | |
8651 | { | |
8652 | h->got.offset = htab->root.sgot->size; | |
8653 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8654 | } | |
8655 | ||
8656 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
8657 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8658 | || h->root.type != bfd_link_hash_undefweak) | |
6dda7875 | 8659 | && (!bfd_link_executable (info) |
a06ea964 NC |
8660 | || indx != 0 |
8661 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
8662 | { | |
8663 | if (got_type & GOT_TLSDESC_GD) | |
8664 | { | |
8665 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8666 | /* Note reloc_count not incremented here! We have | |
8667 | already adjusted reloc_count for this relocation | |
8668 | type. */ | |
8669 | ||
8670 | /* TLSDESC PLT is now needed, but not yet determined. */ | |
9bcc30e4 | 8671 | htab->root.tlsdesc_plt = (bfd_vma) - 1; |
a06ea964 NC |
8672 | } |
8673 | ||
8674 | if (got_type & GOT_TLS_GD) | |
8675 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
8676 | ||
8677 | if (got_type & GOT_TLS_IE) | |
8678 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
8679 | } | |
8680 | } | |
8681 | } | |
8682 | else | |
8683 | { | |
8684 | h->got.offset = (bfd_vma) - 1; | |
8685 | } | |
8686 | ||
190eb1dd | 8687 | if (h->dyn_relocs == NULL) |
a06ea964 NC |
8688 | return TRUE; |
8689 | ||
8690 | /* In the shared -Bsymbolic case, discard space allocated for | |
8691 | dynamic pc-relative relocs against symbols which turn out to be | |
8692 | defined in regular objects. For the normal shared case, discard | |
8693 | space for pc-relative relocs that have become local due to symbol | |
8694 | visibility changes. */ | |
8695 | ||
0e1862bb | 8696 | if (bfd_link_pic (info)) |
a06ea964 NC |
8697 | { |
8698 | /* Relocs that use pc_count are those that appear on a call | |
07d6d2b8 AM |
8699 | insn, or certain REL relocs that can generated via assembly. |
8700 | We want calls to protected symbols to resolve directly to the | |
8701 | function rather than going via the plt. If people want | |
8702 | function pointer comparisons to work as expected then they | |
8703 | should avoid writing weird assembly. */ | |
a06ea964 NC |
8704 | if (SYMBOL_CALLS_LOCAL (info, h)) |
8705 | { | |
8706 | struct elf_dyn_relocs **pp; | |
8707 | ||
190eb1dd | 8708 | for (pp = &h->dyn_relocs; (p = *pp) != NULL;) |
a06ea964 NC |
8709 | { |
8710 | p->count -= p->pc_count; | |
8711 | p->pc_count = 0; | |
8712 | if (p->count == 0) | |
8713 | *pp = p->next; | |
8714 | else | |
8715 | pp = &p->next; | |
8716 | } | |
8717 | } | |
8718 | ||
8719 | /* Also discard relocs on undefined weak syms with non-default | |
07d6d2b8 | 8720 | visibility. */ |
190eb1dd | 8721 | if (h->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak) |
a06ea964 | 8722 | { |
ddb7fd0f L |
8723 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
8724 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
190eb1dd | 8725 | h->dyn_relocs = NULL; |
a06ea964 NC |
8726 | |
8727 | /* Make sure undefined weak symbols are output as a dynamic | |
8728 | symbol in PIEs. */ | |
8729 | else if (h->dynindx == -1 | |
8730 | && !h->forced_local | |
ff07562f | 8731 | && h->root.type == bfd_link_hash_undefweak |
a06ea964 NC |
8732 | && !bfd_elf_link_record_dynamic_symbol (info, h)) |
8733 | return FALSE; | |
8734 | } | |
8735 | ||
8736 | } | |
8737 | else if (ELIMINATE_COPY_RELOCS) | |
8738 | { | |
8739 | /* For the non-shared case, discard space for relocs against | |
07d6d2b8 AM |
8740 | symbols which turn out to need copy relocs or are not |
8741 | dynamic. */ | |
a06ea964 NC |
8742 | |
8743 | if (!h->non_got_ref | |
8744 | && ((h->def_dynamic | |
8745 | && !h->def_regular) | |
8746 | || (htab->root.dynamic_sections_created | |
8747 | && (h->root.type == bfd_link_hash_undefweak | |
8748 | || h->root.type == bfd_link_hash_undefined)))) | |
8749 | { | |
8750 | /* Make sure this symbol is output as a dynamic symbol. | |
8751 | Undefined weak syms won't yet be marked as dynamic. */ | |
8752 | if (h->dynindx == -1 | |
8753 | && !h->forced_local | |
ff07562f | 8754 | && h->root.type == bfd_link_hash_undefweak |
a06ea964 NC |
8755 | && !bfd_elf_link_record_dynamic_symbol (info, h)) |
8756 | return FALSE; | |
8757 | ||
8758 | /* If that succeeded, we know we'll be keeping all the | |
8759 | relocs. */ | |
8760 | if (h->dynindx != -1) | |
8761 | goto keep; | |
8762 | } | |
8763 | ||
190eb1dd | 8764 | h->dyn_relocs = NULL; |
a06ea964 NC |
8765 | |
8766 | keep:; | |
8767 | } | |
8768 | ||
8769 | /* Finally, allocate space. */ | |
190eb1dd | 8770 | for (p = h->dyn_relocs; p != NULL; p = p->next) |
a06ea964 NC |
8771 | { |
8772 | asection *sreloc; | |
8773 | ||
8774 | sreloc = elf_section_data (p->sec)->sreloc; | |
8775 | ||
8776 | BFD_ASSERT (sreloc != NULL); | |
8777 | ||
8778 | sreloc->size += p->count * RELOC_SIZE (htab); | |
8779 | } | |
8780 | ||
8781 | return TRUE; | |
8782 | } | |
8783 | ||
1419bbe5 WN |
8784 | /* Allocate space in .plt, .got and associated reloc sections for |
8785 | ifunc dynamic relocs. */ | |
8786 | ||
8787 | static bfd_boolean | |
8788 | elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h, | |
8789 | void *inf) | |
8790 | { | |
8791 | struct bfd_link_info *info; | |
8792 | struct elf_aarch64_link_hash_table *htab; | |
1419bbe5 WN |
8793 | |
8794 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
8795 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
8796 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
8797 | ||
8798 | There is no need to process bfd_link_hash_indirect symbols here | |
8799 | because we will also be presented with the concrete instance of | |
8800 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been | |
8801 | called to copy all relevant data from the generic to the concrete | |
2d0ca824 | 8802 | symbol instance. */ |
1419bbe5 WN |
8803 | if (h->root.type == bfd_link_hash_indirect) |
8804 | return TRUE; | |
8805 | ||
8806 | if (h->root.type == bfd_link_hash_warning) | |
8807 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8808 | ||
8809 | info = (struct bfd_link_info *) inf; | |
8810 | htab = elf_aarch64_hash_table (info); | |
8811 | ||
1419bbe5 WN |
8812 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
8813 | here if it is defined and referenced in a non-shared object. */ | |
8814 | if (h->type == STT_GNU_IFUNC | |
8815 | && h->def_regular) | |
8816 | return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, | |
190eb1dd | 8817 | &h->dyn_relocs, |
1419bbe5 WN |
8818 | htab->plt_entry_size, |
8819 | htab->plt_header_size, | |
233cc9c1 L |
8820 | GOT_ENTRY_SIZE, |
8821 | FALSE); | |
1419bbe5 WN |
8822 | return TRUE; |
8823 | } | |
8824 | ||
1419bbe5 WN |
8825 | /* Allocate space in .plt, .got and associated reloc sections for |
8826 | local ifunc dynamic relocs. */ | |
8827 | ||
8828 | static bfd_boolean | |
8829 | elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf) | |
8830 | { | |
8831 | struct elf_link_hash_entry *h | |
8832 | = (struct elf_link_hash_entry *) *slot; | |
8833 | ||
8834 | if (h->type != STT_GNU_IFUNC | |
8835 | || !h->def_regular | |
8836 | || !h->ref_regular | |
8837 | || !h->forced_local | |
8838 | || h->root.type != bfd_link_hash_defined) | |
8839 | abort (); | |
8840 | ||
8841 | return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf); | |
8842 | } | |
a06ea964 | 8843 | |
a06ea964 NC |
8844 | /* This is the most important function of all . Innocuosly named |
8845 | though ! */ | |
2d0ca824 | 8846 | |
a06ea964 | 8847 | static bfd_boolean |
cec5225b | 8848 | elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
8849 | struct bfd_link_info *info) |
8850 | { | |
cec5225b | 8851 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
8852 | bfd *dynobj; |
8853 | asection *s; | |
8854 | bfd_boolean relocs; | |
8855 | bfd *ibfd; | |
8856 | ||
cec5225b | 8857 | htab = elf_aarch64_hash_table ((info)); |
a06ea964 NC |
8858 | dynobj = htab->root.dynobj; |
8859 | ||
8860 | BFD_ASSERT (dynobj != NULL); | |
8861 | ||
8862 | if (htab->root.dynamic_sections_created) | |
8863 | { | |
9b8b325a | 8864 | if (bfd_link_executable (info) && !info->nointerp) |
a06ea964 NC |
8865 | { |
8866 | s = bfd_get_linker_section (dynobj, ".interp"); | |
8867 | if (s == NULL) | |
8868 | abort (); | |
8869 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
8870 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
8871 | } | |
8872 | } | |
8873 | ||
8874 | /* Set up .got offsets for local syms, and space for local dynamic | |
8875 | relocs. */ | |
c72f2fb2 | 8876 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
a06ea964 NC |
8877 | { |
8878 | struct elf_aarch64_local_symbol *locals = NULL; | |
8879 | Elf_Internal_Shdr *symtab_hdr; | |
8880 | asection *srel; | |
8881 | unsigned int i; | |
8882 | ||
8883 | if (!is_aarch64_elf (ibfd)) | |
8884 | continue; | |
8885 | ||
8886 | for (s = ibfd->sections; s != NULL; s = s->next) | |
8887 | { | |
8888 | struct elf_dyn_relocs *p; | |
8889 | ||
8890 | for (p = (struct elf_dyn_relocs *) | |
8891 | (elf_section_data (s)->local_dynrel); p != NULL; p = p->next) | |
8892 | { | |
8893 | if (!bfd_is_abs_section (p->sec) | |
8894 | && bfd_is_abs_section (p->sec->output_section)) | |
8895 | { | |
8896 | /* Input section has been discarded, either because | |
8897 | it is a copy of a linkonce section or due to | |
8898 | linker script /DISCARD/, so we'll be discarding | |
8899 | the relocs too. */ | |
8900 | } | |
8901 | else if (p->count != 0) | |
8902 | { | |
8903 | srel = elf_section_data (p->sec)->sreloc; | |
8904 | srel->size += p->count * RELOC_SIZE (htab); | |
8905 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
8906 | info->flags |= DF_TEXTREL; | |
8907 | } | |
8908 | } | |
8909 | } | |
8910 | ||
cec5225b | 8911 | locals = elf_aarch64_locals (ibfd); |
a06ea964 NC |
8912 | if (!locals) |
8913 | continue; | |
8914 | ||
8915 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
8916 | srel = htab->root.srelgot; | |
8917 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
8918 | { | |
8919 | locals[i].got_offset = (bfd_vma) - 1; | |
8920 | locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
8921 | if (locals[i].got_refcount > 0) | |
8922 | { | |
8923 | unsigned got_type = locals[i].got_type; | |
8924 | if (got_type & GOT_TLSDESC_GD) | |
8925 | { | |
8926 | locals[i].tlsdesc_got_jump_table_offset = | |
8927 | (htab->root.sgotplt->size | |
8928 | - aarch64_compute_jump_table_size (htab)); | |
8929 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
8930 | locals[i].got_offset = (bfd_vma) - 2; | |
8931 | } | |
8932 | ||
8933 | if (got_type & GOT_TLS_GD) | |
8934 | { | |
8935 | locals[i].got_offset = htab->root.sgot->size; | |
8936 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
8937 | } | |
8938 | ||
b53b1bed JW |
8939 | if (got_type & GOT_TLS_IE |
8940 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
8941 | { |
8942 | locals[i].got_offset = htab->root.sgot->size; | |
8943 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8944 | } | |
8945 | ||
8946 | if (got_type == GOT_UNKNOWN) | |
8947 | { | |
8948 | } | |
8949 | ||
0e1862bb | 8950 | if (bfd_link_pic (info)) |
a06ea964 NC |
8951 | { |
8952 | if (got_type & GOT_TLSDESC_GD) | |
8953 | { | |
8954 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8955 | /* Note RELOC_COUNT not incremented here! */ | |
9bcc30e4 | 8956 | htab->root.tlsdesc_plt = (bfd_vma) - 1; |
a06ea964 NC |
8957 | } |
8958 | ||
8959 | if (got_type & GOT_TLS_GD) | |
8960 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
8961 | ||
b53b1bed JW |
8962 | if (got_type & GOT_TLS_IE |
8963 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
8964 | htab->root.srelgot->size += RELOC_SIZE (htab); |
8965 | } | |
8966 | } | |
8967 | else | |
8968 | { | |
8969 | locals[i].got_refcount = (bfd_vma) - 1; | |
8970 | } | |
8971 | } | |
8972 | } | |
8973 | ||
8974 | ||
8975 | /* Allocate global sym .plt and .got entries, and space for global | |
8976 | sym dynamic relocs. */ | |
cec5225b | 8977 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs, |
a06ea964 NC |
8978 | info); |
8979 | ||
1419bbe5 WN |
8980 | /* Allocate global ifunc sym .plt and .got entries, and space for global |
8981 | ifunc sym dynamic relocs. */ | |
8982 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs, | |
8983 | info); | |
8984 | ||
1419bbe5 WN |
8985 | /* Allocate .plt and .got entries, and space for local ifunc symbols. */ |
8986 | htab_traverse (htab->loc_hash_table, | |
8987 | elfNN_aarch64_allocate_local_ifunc_dynrelocs, | |
8988 | info); | |
a06ea964 NC |
8989 | |
8990 | /* For every jump slot reserved in the sgotplt, reloc_count is | |
8991 | incremented. However, when we reserve space for TLS descriptors, | |
8992 | it's not incremented, so in order to compute the space reserved | |
8993 | for them, it suffices to multiply the reloc count by the jump | |
8994 | slot size. */ | |
8995 | ||
8996 | if (htab->root.srelplt) | |
8847944f | 8997 | htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab); |
a06ea964 | 8998 | |
9bcc30e4 | 8999 | if (htab->root.tlsdesc_plt) |
a06ea964 NC |
9000 | { |
9001 | if (htab->root.splt->size == 0) | |
37c18eed | 9002 | htab->root.splt->size += htab->plt_header_size; |
a06ea964 | 9003 | |
a06ea964 | 9004 | /* If we're not using lazy TLS relocations, don't generate the |
ce12121b | 9005 | GOT and PLT entry required. */ |
9bcc30e4 L |
9006 | if ((info->flags & DF_BIND_NOW)) |
9007 | htab->root.tlsdesc_plt = 0; | |
9008 | else | |
a06ea964 | 9009 | { |
9bcc30e4 | 9010 | htab->root.tlsdesc_plt = htab->root.splt->size; |
ce12121b TC |
9011 | htab->root.splt->size += htab->tlsdesc_plt_entry_size; |
9012 | ||
9bcc30e4 | 9013 | htab->root.tlsdesc_got = htab->root.sgot->size; |
a06ea964 NC |
9014 | htab->root.sgot->size += GOT_ENTRY_SIZE; |
9015 | } | |
9016 | } | |
9017 | ||
68fcca92 | 9018 | /* Init mapping symbols information to use later to distingush between |
4106101c MS |
9019 | code and data while scanning for errata. */ |
9020 | if (htab->fix_erratum_835769 || htab->fix_erratum_843419) | |
68fcca92 JW |
9021 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
9022 | { | |
9023 | if (!is_aarch64_elf (ibfd)) | |
9024 | continue; | |
9025 | bfd_elfNN_aarch64_init_maps (ibfd); | |
9026 | } | |
9027 | ||
a06ea964 NC |
9028 | /* We now have determined the sizes of the various dynamic sections. |
9029 | Allocate memory for them. */ | |
9030 | relocs = FALSE; | |
9031 | for (s = dynobj->sections; s != NULL; s = s->next) | |
9032 | { | |
9033 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9034 | continue; | |
9035 | ||
9036 | if (s == htab->root.splt | |
9037 | || s == htab->root.sgot | |
9038 | || s == htab->root.sgotplt | |
9039 | || s == htab->root.iplt | |
9d19e4fd | 9040 | || s == htab->root.igotplt |
5474d94f AM |
9041 | || s == htab->root.sdynbss |
9042 | || s == htab->root.sdynrelro) | |
a06ea964 NC |
9043 | { |
9044 | /* Strip this section if we don't need it; see the | |
9045 | comment below. */ | |
9046 | } | |
fd361982 | 9047 | else if (CONST_STRNEQ (bfd_section_name (s), ".rela")) |
a06ea964 NC |
9048 | { |
9049 | if (s->size != 0 && s != htab->root.srelplt) | |
9050 | relocs = TRUE; | |
9051 | ||
9052 | /* We use the reloc_count field as a counter if we need | |
9053 | to copy relocs into the output file. */ | |
9054 | if (s != htab->root.srelplt) | |
9055 | s->reloc_count = 0; | |
9056 | } | |
9057 | else | |
9058 | { | |
9059 | /* It's not one of our sections, so don't allocate space. */ | |
9060 | continue; | |
9061 | } | |
9062 | ||
9063 | if (s->size == 0) | |
9064 | { | |
9065 | /* If we don't need this section, strip it from the | |
9066 | output file. This is mostly to handle .rela.bss and | |
9067 | .rela.plt. We must create both sections in | |
9068 | create_dynamic_sections, because they must be created | |
9069 | before the linker maps input sections to output | |
9070 | sections. The linker does that before | |
9071 | adjust_dynamic_symbol is called, and it is that | |
9072 | function which decides whether anything needs to go | |
9073 | into these sections. */ | |
a06ea964 NC |
9074 | s->flags |= SEC_EXCLUDE; |
9075 | continue; | |
9076 | } | |
9077 | ||
9078 | if ((s->flags & SEC_HAS_CONTENTS) == 0) | |
9079 | continue; | |
9080 | ||
9081 | /* Allocate memory for the section contents. We use bfd_zalloc | |
07d6d2b8 AM |
9082 | here in case unused entries are not reclaimed before the |
9083 | section's contents are written out. This should not happen, | |
9084 | but this way if it does, we get a R_AARCH64_NONE reloc instead | |
9085 | of garbage. */ | |
a06ea964 NC |
9086 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
9087 | if (s->contents == NULL) | |
9088 | return FALSE; | |
9089 | } | |
9090 | ||
9091 | if (htab->root.dynamic_sections_created) | |
9092 | { | |
9093 | /* Add some entries to the .dynamic section. We fill in the | |
07d6d2b8 AM |
9094 | values later, in elfNN_aarch64_finish_dynamic_sections, but we |
9095 | must add the entries now so that we get the correct size for | |
9096 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
9097 | dynamic linker and used by the debugger. */ | |
a06ea964 NC |
9098 | #define add_dynamic_entry(TAG, VAL) \ |
9099 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
9100 | ||
3084d7a2 L |
9101 | if (!_bfd_elf_add_dynamic_tags (output_bfd, info, relocs)) |
9102 | return FALSE; | |
a06ea964 NC |
9103 | |
9104 | if (htab->root.splt->size != 0) | |
9105 | { | |
823710d5 SN |
9106 | if (htab->variant_pcs |
9107 | && !add_dynamic_entry (DT_AARCH64_VARIANT_PCS, 0)) | |
9108 | return FALSE; | |
9109 | ||
1dbade74 SD |
9110 | if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_BTI_PAC) |
9111 | && (!add_dynamic_entry (DT_AARCH64_BTI_PLT, 0) | |
9112 | || !add_dynamic_entry (DT_AARCH64_PAC_PLT, 0))) | |
9113 | return FALSE; | |
9114 | ||
9115 | else if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_BTI) | |
9116 | && !add_dynamic_entry (DT_AARCH64_BTI_PLT, 0)) | |
9117 | return FALSE; | |
9118 | ||
9119 | else if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_PAC) | |
9120 | && !add_dynamic_entry (DT_AARCH64_PAC_PLT, 0)) | |
37c18eed | 9121 | return FALSE; |
a06ea964 | 9122 | } |
a06ea964 NC |
9123 | } |
9124 | #undef add_dynamic_entry | |
9125 | ||
9126 | return TRUE; | |
a06ea964 NC |
9127 | } |
9128 | ||
9129 | static inline void | |
caed7120 YZ |
9130 | elf_aarch64_update_plt_entry (bfd *output_bfd, |
9131 | bfd_reloc_code_real_type r_type, | |
9132 | bfd_byte *plt_entry, bfd_vma value) | |
a06ea964 | 9133 | { |
caed7120 YZ |
9134 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type); |
9135 | ||
1d75a8e2 NC |
9136 | /* FIXME: We should check the return value from this function call. */ |
9137 | (void) _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value); | |
a06ea964 NC |
9138 | } |
9139 | ||
9140 | static void | |
cec5225b YZ |
9141 | elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h, |
9142 | struct elf_aarch64_link_hash_table | |
1419bbe5 WN |
9143 | *htab, bfd *output_bfd, |
9144 | struct bfd_link_info *info) | |
a06ea964 NC |
9145 | { |
9146 | bfd_byte *plt_entry; | |
9147 | bfd_vma plt_index; | |
9148 | bfd_vma got_offset; | |
9149 | bfd_vma gotplt_entry_address; | |
9150 | bfd_vma plt_entry_address; | |
9151 | Elf_Internal_Rela rela; | |
9152 | bfd_byte *loc; | |
1419bbe5 WN |
9153 | asection *plt, *gotplt, *relplt; |
9154 | ||
9155 | /* When building a static executable, use .iplt, .igot.plt and | |
9156 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
9157 | if (htab->root.splt != NULL) | |
9158 | { | |
9159 | plt = htab->root.splt; | |
9160 | gotplt = htab->root.sgotplt; | |
9161 | relplt = htab->root.srelplt; | |
9162 | } | |
9163 | else | |
9164 | { | |
9165 | plt = htab->root.iplt; | |
9166 | gotplt = htab->root.igotplt; | |
9167 | relplt = htab->root.irelplt; | |
9168 | } | |
9169 | ||
9170 | /* Get the index in the procedure linkage table which | |
9171 | corresponds to this symbol. This is the index of this symbol | |
9172 | in all the symbols for which we are making plt entries. The | |
9173 | first entry in the procedure linkage table is reserved. | |
a06ea964 | 9174 | |
1419bbe5 WN |
9175 | Get the offset into the .got table of the entry that |
9176 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE | |
9177 | bytes. The first three are reserved for the dynamic linker. | |
692e2b8b | 9178 | |
1419bbe5 WN |
9179 | For static executables, we don't reserve anything. */ |
9180 | ||
9181 | if (plt == htab->root.splt) | |
9182 | { | |
9183 | plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size; | |
9184 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
9185 | } | |
9186 | else | |
9187 | { | |
9188 | plt_index = h->plt.offset / htab->plt_entry_size; | |
9189 | got_offset = plt_index * GOT_ENTRY_SIZE; | |
9190 | } | |
9191 | ||
9192 | plt_entry = plt->contents + h->plt.offset; | |
9193 | plt_entry_address = plt->output_section->vma | |
f44a1f8e | 9194 | + plt->output_offset + h->plt.offset; |
1419bbe5 WN |
9195 | gotplt_entry_address = gotplt->output_section->vma + |
9196 | gotplt->output_offset + got_offset; | |
a06ea964 NC |
9197 | |
9198 | /* Copy in the boiler-plate for the PLTn entry. */ | |
37c18eed SD |
9199 | memcpy (plt_entry, htab->plt_entry, htab->plt_entry_size); |
9200 | ||
9201 | /* First instruction in BTI enabled PLT stub is a BTI | |
9202 | instruction so skip it. */ | |
9203 | if (elf_aarch64_tdata (output_bfd)->plt_type & PLT_BTI | |
9204 | && elf_elfheader (output_bfd)->e_type == ET_EXEC) | |
9205 | plt_entry = plt_entry + 4; | |
a06ea964 NC |
9206 | |
9207 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
9208 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 YZ |
9209 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
9210 | plt_entry, | |
9211 | PG (gotplt_entry_address) - | |
9212 | PG (plt_entry_address)); | |
a06ea964 NC |
9213 | |
9214 | /* Fill in the lo12 bits for the load from the pltgot. */ | |
caed7120 YZ |
9215 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
9216 | plt_entry + 4, | |
9217 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 | 9218 | |
9aff4b7a | 9219 | /* Fill in the lo12 bits for the add from the pltgot entry. */ |
caed7120 YZ |
9220 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
9221 | plt_entry + 8, | |
9222 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 NC |
9223 | |
9224 | /* All the GOTPLT Entries are essentially initialized to PLT0. */ | |
cec5225b | 9225 | bfd_put_NN (output_bfd, |
1419bbe5 WN |
9226 | plt->output_section->vma + plt->output_offset, |
9227 | gotplt->contents + got_offset); | |
a06ea964 | 9228 | |
a06ea964 | 9229 | rela.r_offset = gotplt_entry_address; |
1419bbe5 WN |
9230 | |
9231 | if (h->dynindx == -1 | |
0e1862bb | 9232 | || ((bfd_link_executable (info) |
1419bbe5 WN |
9233 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
9234 | && h->def_regular | |
9235 | && h->type == STT_GNU_IFUNC)) | |
9236 | { | |
9237 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
9238 | R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */ | |
9239 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
9240 | rela.r_addend = (h->root.u.def.value | |
9241 | + h->root.u.def.section->output_section->vma | |
9242 | + h->root.u.def.section->output_offset); | |
9243 | } | |
9244 | else | |
9245 | { | |
9246 | /* Fill in the entry in the .rela.plt section. */ | |
9247 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT)); | |
9248 | rela.r_addend = 0; | |
9249 | } | |
a06ea964 NC |
9250 | |
9251 | /* Compute the relocation entry to used based on PLT index and do | |
9252 | not adjust reloc_count. The reloc_count has already been adjusted | |
9253 | to account for this entry. */ | |
1419bbe5 | 9254 | loc = relplt->contents + plt_index * RELOC_SIZE (htab); |
cec5225b | 9255 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
9256 | } |
9257 | ||
9258 | /* Size sections even though they're not dynamic. We use it to setup | |
9259 | _TLS_MODULE_BASE_, if needed. */ | |
9260 | ||
9261 | static bfd_boolean | |
cec5225b | 9262 | elfNN_aarch64_always_size_sections (bfd *output_bfd, |
a06ea964 NC |
9263 | struct bfd_link_info *info) |
9264 | { | |
9265 | asection *tls_sec; | |
9266 | ||
0e1862bb | 9267 | if (bfd_link_relocatable (info)) |
a06ea964 NC |
9268 | return TRUE; |
9269 | ||
9270 | tls_sec = elf_hash_table (info)->tls_sec; | |
9271 | ||
9272 | if (tls_sec) | |
9273 | { | |
9274 | struct elf_link_hash_entry *tlsbase; | |
9275 | ||
9276 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
9277 | "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE); | |
9278 | ||
9279 | if (tlsbase) | |
9280 | { | |
9281 | struct bfd_link_hash_entry *h = NULL; | |
9282 | const struct elf_backend_data *bed = | |
9283 | get_elf_backend_data (output_bfd); | |
9284 | ||
9285 | if (!(_bfd_generic_link_add_one_symbol | |
9286 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
9287 | tls_sec, 0, NULL, FALSE, bed->collect, &h))) | |
9288 | return FALSE; | |
9289 | ||
9290 | tlsbase->type = STT_TLS; | |
9291 | tlsbase = (struct elf_link_hash_entry *) h; | |
9292 | tlsbase->def_regular = 1; | |
9293 | tlsbase->other = STV_HIDDEN; | |
9294 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
9295 | } | |
9296 | } | |
9297 | ||
9298 | return TRUE; | |
9299 | } | |
9300 | ||
9301 | /* Finish up dynamic symbol handling. We set the contents of various | |
9302 | dynamic sections here. */ | |
2d0ca824 | 9303 | |
a06ea964 | 9304 | static bfd_boolean |
cec5225b | 9305 | elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd, |
a06ea964 NC |
9306 | struct bfd_link_info *info, |
9307 | struct elf_link_hash_entry *h, | |
9308 | Elf_Internal_Sym *sym) | |
9309 | { | |
cec5225b YZ |
9310 | struct elf_aarch64_link_hash_table *htab; |
9311 | htab = elf_aarch64_hash_table (info); | |
a06ea964 NC |
9312 | |
9313 | if (h->plt.offset != (bfd_vma) - 1) | |
9314 | { | |
1419bbe5 WN |
9315 | asection *plt, *gotplt, *relplt; |
9316 | ||
a06ea964 | 9317 | /* This symbol has an entry in the procedure linkage table. Set |
07d6d2b8 | 9318 | it up. */ |
a06ea964 | 9319 | |
1419bbe5 WN |
9320 | /* When building a static executable, use .iplt, .igot.plt and |
9321 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
9322 | if (htab->root.splt != NULL) | |
9323 | { | |
9324 | plt = htab->root.splt; | |
9325 | gotplt = htab->root.sgotplt; | |
9326 | relplt = htab->root.srelplt; | |
9327 | } | |
9328 | else | |
9329 | { | |
9330 | plt = htab->root.iplt; | |
9331 | gotplt = htab->root.igotplt; | |
9332 | relplt = htab->root.irelplt; | |
9333 | } | |
9334 | ||
9335 | /* This symbol has an entry in the procedure linkage table. Set | |
9336 | it up. */ | |
9337 | if ((h->dynindx == -1 | |
0e1862bb | 9338 | && !((h->forced_local || bfd_link_executable (info)) |
1419bbe5 WN |
9339 | && h->def_regular |
9340 | && h->type == STT_GNU_IFUNC)) | |
9341 | || plt == NULL | |
9342 | || gotplt == NULL | |
9343 | || relplt == NULL) | |
f955cccf | 9344 | return FALSE; |
a06ea964 | 9345 | |
1419bbe5 | 9346 | elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info); |
a06ea964 NC |
9347 | if (!h->def_regular) |
9348 | { | |
9349 | /* Mark the symbol as undefined, rather than as defined in | |
46b87d49 | 9350 | the .plt section. */ |
a06ea964 | 9351 | sym->st_shndx = SHN_UNDEF; |
46b87d49 WN |
9352 | /* If the symbol is weak we need to clear the value. |
9353 | Otherwise, the PLT entry would provide a definition for | |
9354 | the symbol even if the symbol wasn't defined anywhere, | |
9355 | and so the symbol would never be NULL. Leave the value if | |
9356 | there were any relocations where pointer equality matters | |
9357 | (this is a clue for the dynamic linker, to make function | |
9358 | pointer comparisons work between an application and shared | |
9359 | library). */ | |
9360 | if (!h->ref_regular_nonweak || !h->pointer_equality_needed) | |
9361 | sym->st_value = 0; | |
a06ea964 NC |
9362 | } |
9363 | } | |
9364 | ||
9365 | if (h->got.offset != (bfd_vma) - 1 | |
a377ae2a SN |
9366 | && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL |
9367 | /* Undefined weak symbol in static PIE resolves to 0 without | |
9368 | any dynamic relocations. */ | |
9369 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
a06ea964 NC |
9370 | { |
9371 | Elf_Internal_Rela rela; | |
9372 | bfd_byte *loc; | |
9373 | ||
9374 | /* This symbol has an entry in the global offset table. Set it | |
07d6d2b8 | 9375 | up. */ |
a06ea964 NC |
9376 | if (htab->root.sgot == NULL || htab->root.srelgot == NULL) |
9377 | abort (); | |
9378 | ||
9379 | rela.r_offset = (htab->root.sgot->output_section->vma | |
9380 | + htab->root.sgot->output_offset | |
9381 | + (h->got.offset & ~(bfd_vma) 1)); | |
9382 | ||
49206388 WN |
9383 | if (h->def_regular |
9384 | && h->type == STT_GNU_IFUNC) | |
9385 | { | |
0e1862bb | 9386 | if (bfd_link_pic (info)) |
49206388 WN |
9387 | { |
9388 | /* Generate R_AARCH64_GLOB_DAT. */ | |
9389 | goto do_glob_dat; | |
9390 | } | |
9391 | else | |
9392 | { | |
9393 | asection *plt; | |
9394 | ||
9395 | if (!h->pointer_equality_needed) | |
9396 | abort (); | |
9397 | ||
9398 | /* For non-shared object, we can't use .got.plt, which | |
9399 | contains the real function address if we need pointer | |
9400 | equality. We load the GOT entry with the PLT entry. */ | |
9401 | plt = htab->root.splt ? htab->root.splt : htab->root.iplt; | |
9402 | bfd_put_NN (output_bfd, (plt->output_section->vma | |
9403 | + plt->output_offset | |
9404 | + h->plt.offset), | |
9405 | htab->root.sgot->contents | |
9406 | + (h->got.offset & ~(bfd_vma) 1)); | |
9407 | return TRUE; | |
9408 | } | |
9409 | } | |
0e1862bb | 9410 | else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h)) |
a06ea964 | 9411 | { |
0ee3a6db | 9412 | if (!(h->def_regular || ELF_COMMON_DEF_P (h))) |
a06ea964 NC |
9413 | return FALSE; |
9414 | ||
9415 | BFD_ASSERT ((h->got.offset & 1) != 0); | |
a6bb11b2 | 9416 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); |
a06ea964 NC |
9417 | rela.r_addend = (h->root.u.def.value |
9418 | + h->root.u.def.section->output_section->vma | |
9419 | + h->root.u.def.section->output_offset); | |
9420 | } | |
9421 | else | |
9422 | { | |
dc1e8a47 | 9423 | do_glob_dat: |
a06ea964 | 9424 | BFD_ASSERT ((h->got.offset & 1) == 0); |
cec5225b | 9425 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 | 9426 | htab->root.sgot->contents + h->got.offset); |
a6bb11b2 | 9427 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT)); |
a06ea964 NC |
9428 | rela.r_addend = 0; |
9429 | } | |
9430 | ||
9431 | loc = htab->root.srelgot->contents; | |
9432 | loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 9433 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
9434 | } |
9435 | ||
9436 | if (h->needs_copy) | |
9437 | { | |
9438 | Elf_Internal_Rela rela; | |
5474d94f | 9439 | asection *s; |
a06ea964 NC |
9440 | bfd_byte *loc; |
9441 | ||
9442 | /* This symbol needs a copy reloc. Set it up. */ | |
a06ea964 NC |
9443 | if (h->dynindx == -1 |
9444 | || (h->root.type != bfd_link_hash_defined | |
9445 | && h->root.type != bfd_link_hash_defweak) | |
9d19e4fd | 9446 | || htab->root.srelbss == NULL) |
a06ea964 NC |
9447 | abort (); |
9448 | ||
9449 | rela.r_offset = (h->root.u.def.value | |
9450 | + h->root.u.def.section->output_section->vma | |
9451 | + h->root.u.def.section->output_offset); | |
a6bb11b2 | 9452 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY)); |
a06ea964 | 9453 | rela.r_addend = 0; |
afbf7e8e | 9454 | if (h->root.u.def.section == htab->root.sdynrelro) |
5474d94f AM |
9455 | s = htab->root.sreldynrelro; |
9456 | else | |
9457 | s = htab->root.srelbss; | |
9458 | loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 9459 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
9460 | } |
9461 | ||
9462 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may | |
9463 | be NULL for local symbols. */ | |
9464 | if (sym != NULL | |
9637f6ef | 9465 | && (h == elf_hash_table (info)->hdynamic |
a06ea964 NC |
9466 | || h == elf_hash_table (info)->hgot)) |
9467 | sym->st_shndx = SHN_ABS; | |
9468 | ||
9469 | return TRUE; | |
9470 | } | |
9471 | ||
1419bbe5 WN |
9472 | /* Finish up local dynamic symbol handling. We set the contents of |
9473 | various dynamic sections here. */ | |
9474 | ||
9475 | static bfd_boolean | |
9476 | elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf) | |
9477 | { | |
9478 | struct elf_link_hash_entry *h | |
9479 | = (struct elf_link_hash_entry *) *slot; | |
9480 | struct bfd_link_info *info | |
9481 | = (struct bfd_link_info *) inf; | |
9482 | ||
9483 | return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd, | |
9484 | info, h, NULL); | |
9485 | } | |
9486 | ||
a06ea964 | 9487 | static void |
cec5225b YZ |
9488 | elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED, |
9489 | struct elf_aarch64_link_hash_table | |
a06ea964 NC |
9490 | *htab) |
9491 | { | |
9492 | /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between | |
9493 | small and large plts and at the minute just generates | |
9494 | the small PLT. */ | |
9495 | ||
cec5225b | 9496 | /* PLT0 of the small PLT looks like this in ELF64 - |
a06ea964 NC |
9497 | stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack. |
9498 | adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT | |
9499 | ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the | |
9500 | // symbol resolver | |
9501 | add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the | |
9502 | // GOTPLT entry for this. | |
9503 | br x17 | |
cec5225b | 9504 | PLT0 will be slightly different in ELF32 due to different got entry |
2d0ca824 | 9505 | size. */ |
caed7120 | 9506 | bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */ |
a06ea964 NC |
9507 | bfd_vma plt_base; |
9508 | ||
9509 | ||
37c18eed SD |
9510 | memcpy (htab->root.splt->contents, htab->plt0_entry, |
9511 | htab->plt_header_size); | |
4d3bb356 SN |
9512 | |
9513 | /* PR 26312: Explicitly set the sh_entsize to 0 so that | |
9514 | consumers do not think that the section contains fixed | |
9515 | sized objects. */ | |
9516 | elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize = 0; | |
a06ea964 | 9517 | |
caed7120 YZ |
9518 | plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma |
9519 | + htab->root.sgotplt->output_offset | |
9520 | + GOT_ENTRY_SIZE * 2); | |
a06ea964 NC |
9521 | |
9522 | plt_base = htab->root.splt->output_section->vma + | |
f44a1f8e | 9523 | htab->root.splt->output_offset; |
a06ea964 | 9524 | |
37c18eed SD |
9525 | /* First instruction in BTI enabled PLT stub is a BTI |
9526 | instruction so skip it. */ | |
9527 | bfd_byte *plt0_entry = htab->root.splt->contents; | |
9528 | if (elf_aarch64_tdata (output_bfd)->plt_type & PLT_BTI) | |
9529 | plt0_entry = plt0_entry + 4; | |
9530 | ||
a06ea964 NC |
9531 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. |
9532 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 | 9533 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
37c18eed | 9534 | plt0_entry + 4, |
caed7120 | 9535 | PG (plt_got_2nd_ent) - PG (plt_base + 4)); |
a06ea964 | 9536 | |
caed7120 | 9537 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
37c18eed | 9538 | plt0_entry + 8, |
caed7120 | 9539 | PG_OFFSET (plt_got_2nd_ent)); |
a06ea964 | 9540 | |
caed7120 | 9541 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
37c18eed | 9542 | plt0_entry + 12, |
caed7120 | 9543 | PG_OFFSET (plt_got_2nd_ent)); |
a06ea964 NC |
9544 | } |
9545 | ||
9546 | static bfd_boolean | |
cec5225b | 9547 | elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd, |
a06ea964 NC |
9548 | struct bfd_link_info *info) |
9549 | { | |
cec5225b | 9550 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
9551 | bfd *dynobj; |
9552 | asection *sdyn; | |
9553 | ||
cec5225b | 9554 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
9555 | dynobj = htab->root.dynobj; |
9556 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); | |
9557 | ||
9558 | if (htab->root.dynamic_sections_created) | |
9559 | { | |
cec5225b | 9560 | ElfNN_External_Dyn *dyncon, *dynconend; |
a06ea964 NC |
9561 | |
9562 | if (sdyn == NULL || htab->root.sgot == NULL) | |
9563 | abort (); | |
9564 | ||
cec5225b YZ |
9565 | dyncon = (ElfNN_External_Dyn *) sdyn->contents; |
9566 | dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size); | |
a06ea964 NC |
9567 | for (; dyncon < dynconend; dyncon++) |
9568 | { | |
9569 | Elf_Internal_Dyn dyn; | |
9570 | asection *s; | |
9571 | ||
cec5225b | 9572 | bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn); |
a06ea964 NC |
9573 | |
9574 | switch (dyn.d_tag) | |
9575 | { | |
9576 | default: | |
9577 | continue; | |
9578 | ||
9579 | case DT_PLTGOT: | |
9580 | s = htab->root.sgotplt; | |
9581 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
9582 | break; | |
9583 | ||
9584 | case DT_JMPREL: | |
4ade44b7 AM |
9585 | s = htab->root.srelplt; |
9586 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
a06ea964 NC |
9587 | break; |
9588 | ||
9589 | case DT_PLTRELSZ: | |
c955de36 | 9590 | s = htab->root.srelplt; |
a06ea964 NC |
9591 | dyn.d_un.d_val = s->size; |
9592 | break; | |
9593 | ||
a06ea964 NC |
9594 | case DT_TLSDESC_PLT: |
9595 | s = htab->root.splt; | |
9596 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
9bcc30e4 | 9597 | + htab->root.tlsdesc_plt; |
a06ea964 NC |
9598 | break; |
9599 | ||
9600 | case DT_TLSDESC_GOT: | |
9601 | s = htab->root.sgot; | |
9bcc30e4 | 9602 | BFD_ASSERT (htab->root.tlsdesc_got != (bfd_vma)-1); |
a06ea964 | 9603 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset |
9bcc30e4 | 9604 | + htab->root.tlsdesc_got; |
a06ea964 NC |
9605 | break; |
9606 | } | |
9607 | ||
cec5225b | 9608 | bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon); |
a06ea964 NC |
9609 | } |
9610 | ||
9611 | } | |
9612 | ||
9613 | /* Fill in the special first entry in the procedure linkage table. */ | |
9614 | if (htab->root.splt && htab->root.splt->size > 0) | |
9615 | { | |
cec5225b | 9616 | elfNN_aarch64_init_small_plt0_entry (output_bfd, htab); |
a06ea964 | 9617 | |
9bcc30e4 | 9618 | if (htab->root.tlsdesc_plt && !(info->flags & DF_BIND_NOW)) |
a06ea964 | 9619 | { |
9bcc30e4 | 9620 | BFD_ASSERT (htab->root.tlsdesc_got != (bfd_vma)-1); |
cec5225b | 9621 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
9bcc30e4 | 9622 | htab->root.sgot->contents + htab->root.tlsdesc_got); |
a06ea964 | 9623 | |
37c18eed SD |
9624 | const bfd_byte *entry = elfNN_aarch64_tlsdesc_small_plt_entry; |
9625 | htab->tlsdesc_plt_entry_size = PLT_TLSDESC_ENTRY_SIZE; | |
9626 | ||
9627 | aarch64_plt_type type = elf_aarch64_tdata (output_bfd)->plt_type; | |
1dbade74 | 9628 | if (type == PLT_BTI || type == PLT_BTI_PAC) |
37c18eed SD |
9629 | { |
9630 | entry = elfNN_aarch64_tlsdesc_small_plt_bti_entry; | |
37c18eed SD |
9631 | } |
9632 | ||
9bcc30e4 | 9633 | memcpy (htab->root.splt->contents + htab->root.tlsdesc_plt, |
37c18eed | 9634 | entry, htab->tlsdesc_plt_entry_size); |
a06ea964 NC |
9635 | |
9636 | { | |
9637 | bfd_vma adrp1_addr = | |
9638 | htab->root.splt->output_section->vma | |
9bcc30e4 L |
9639 | + htab->root.splt->output_offset |
9640 | + htab->root.tlsdesc_plt + 4; | |
a06ea964 | 9641 | |
caed7120 | 9642 | bfd_vma adrp2_addr = adrp1_addr + 4; |
a06ea964 NC |
9643 | |
9644 | bfd_vma got_addr = | |
9645 | htab->root.sgot->output_section->vma | |
9646 | + htab->root.sgot->output_offset; | |
9647 | ||
9648 | bfd_vma pltgot_addr = | |
9649 | htab->root.sgotplt->output_section->vma | |
9650 | + htab->root.sgotplt->output_offset; | |
9651 | ||
9bcc30e4 | 9652 | bfd_vma dt_tlsdesc_got = got_addr + htab->root.tlsdesc_got; |
caed7120 YZ |
9653 | |
9654 | bfd_byte *plt_entry = | |
9bcc30e4 | 9655 | htab->root.splt->contents + htab->root.tlsdesc_plt; |
a06ea964 | 9656 | |
37c18eed SD |
9657 | /* First instruction in BTI enabled PLT stub is a BTI |
9658 | instruction so skip it. */ | |
9659 | if (type & PLT_BTI) | |
9660 | { | |
9661 | plt_entry = plt_entry + 4; | |
9662 | adrp1_addr = adrp1_addr + 4; | |
9663 | adrp2_addr = adrp2_addr + 4; | |
9664 | } | |
9665 | ||
a06ea964 | 9666 | /* adrp x2, DT_TLSDESC_GOT */ |
caed7120 YZ |
9667 | elf_aarch64_update_plt_entry (output_bfd, |
9668 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
9669 | plt_entry + 4, | |
9670 | (PG (dt_tlsdesc_got) | |
9671 | - PG (adrp1_addr))); | |
a06ea964 NC |
9672 | |
9673 | /* adrp x3, 0 */ | |
caed7120 YZ |
9674 | elf_aarch64_update_plt_entry (output_bfd, |
9675 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
9676 | plt_entry + 8, | |
9677 | (PG (pltgot_addr) | |
9678 | - PG (adrp2_addr))); | |
a06ea964 NC |
9679 | |
9680 | /* ldr x2, [x2, #0] */ | |
caed7120 YZ |
9681 | elf_aarch64_update_plt_entry (output_bfd, |
9682 | BFD_RELOC_AARCH64_LDSTNN_LO12, | |
9683 | plt_entry + 12, | |
9684 | PG_OFFSET (dt_tlsdesc_got)); | |
a06ea964 NC |
9685 | |
9686 | /* add x3, x3, 0 */ | |
caed7120 YZ |
9687 | elf_aarch64_update_plt_entry (output_bfd, |
9688 | BFD_RELOC_AARCH64_ADD_LO12, | |
9689 | plt_entry + 16, | |
9690 | PG_OFFSET (pltgot_addr)); | |
a06ea964 NC |
9691 | } |
9692 | } | |
9693 | } | |
9694 | ||
9695 | if (htab->root.sgotplt) | |
9696 | { | |
9697 | if (bfd_is_abs_section (htab->root.sgotplt->output_section)) | |
9698 | { | |
4eca0228 | 9699 | _bfd_error_handler |
871b3ab2 | 9700 | (_("discarded output section: `%pA'"), htab->root.sgotplt); |
a06ea964 NC |
9701 | return FALSE; |
9702 | } | |
9703 | ||
9704 | /* Fill in the first three entries in the global offset table. */ | |
9705 | if (htab->root.sgotplt->size > 0) | |
9706 | { | |
8db339a6 MS |
9707 | bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents); |
9708 | ||
a06ea964 | 9709 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ |
cec5225b | 9710 | bfd_put_NN (output_bfd, |
a06ea964 NC |
9711 | (bfd_vma) 0, |
9712 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE); | |
cec5225b | 9713 | bfd_put_NN (output_bfd, |
a06ea964 NC |
9714 | (bfd_vma) 0, |
9715 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2); | |
9716 | } | |
9717 | ||
8db339a6 MS |
9718 | if (htab->root.sgot) |
9719 | { | |
9720 | if (htab->root.sgot->size > 0) | |
9721 | { | |
9722 | bfd_vma addr = | |
9723 | sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0; | |
9724 | bfd_put_NN (output_bfd, addr, htab->root.sgot->contents); | |
9725 | } | |
9726 | } | |
9727 | ||
a06ea964 NC |
9728 | elf_section_data (htab->root.sgotplt->output_section)-> |
9729 | this_hdr.sh_entsize = GOT_ENTRY_SIZE; | |
9730 | } | |
9731 | ||
9732 | if (htab->root.sgot && htab->root.sgot->size > 0) | |
9733 | elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize | |
9734 | = GOT_ENTRY_SIZE; | |
9735 | ||
1419bbe5 WN |
9736 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
9737 | htab_traverse (htab->loc_hash_table, | |
9738 | elfNN_aarch64_finish_local_dynamic_symbol, | |
9739 | info); | |
9740 | ||
a06ea964 NC |
9741 | return TRUE; |
9742 | } | |
9743 | ||
37c18eed SD |
9744 | /* Check if BTI enabled PLTs are needed. Returns the type needed. */ |
9745 | static aarch64_plt_type | |
9746 | get_plt_type (bfd *abfd) | |
9747 | { | |
9748 | aarch64_plt_type ret = PLT_NORMAL; | |
9749 | bfd_byte *contents, *extdyn, *extdynend; | |
9750 | asection *sec = bfd_get_section_by_name (abfd, ".dynamic"); | |
9751 | if (!sec || !bfd_malloc_and_get_section (abfd, sec, &contents)) | |
9752 | return ret; | |
9753 | extdyn = contents; | |
9754 | extdynend = contents + sec->size; | |
9755 | for (; extdyn < extdynend; extdyn += sizeof (ElfNN_External_Dyn)) | |
9756 | { | |
9757 | Elf_Internal_Dyn dyn; | |
9758 | bfd_elfNN_swap_dyn_in (abfd, extdyn, &dyn); | |
9759 | ||
9760 | /* Let's check the processor specific dynamic array tags. */ | |
9761 | bfd_vma tag = dyn.d_tag; | |
9762 | if (tag < DT_LOPROC || tag > DT_HIPROC) | |
9763 | continue; | |
9764 | ||
9765 | switch (tag) | |
9766 | { | |
9767 | case DT_AARCH64_BTI_PLT: | |
1dbade74 SD |
9768 | ret |= PLT_BTI; |
9769 | break; | |
9770 | ||
9771 | case DT_AARCH64_PAC_PLT: | |
9772 | ret |= PLT_PAC; | |
37c18eed SD |
9773 | break; |
9774 | ||
9775 | default: break; | |
9776 | } | |
9777 | } | |
9778 | free (contents); | |
9779 | return ret; | |
9780 | } | |
9781 | ||
9782 | static long | |
9783 | elfNN_aarch64_get_synthetic_symtab (bfd *abfd, | |
9784 | long symcount, | |
9785 | asymbol **syms, | |
9786 | long dynsymcount, | |
9787 | asymbol **dynsyms, | |
9788 | asymbol **ret) | |
9789 | { | |
9790 | elf_aarch64_tdata (abfd)->plt_type = get_plt_type (abfd); | |
9791 | return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms, | |
9792 | dynsymcount, dynsyms, ret); | |
9793 | } | |
9794 | ||
a06ea964 NC |
9795 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
9796 | or (bfd_vma) -1 if it should not be included. */ | |
9797 | ||
9798 | static bfd_vma | |
cec5225b | 9799 | elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt, |
a06ea964 NC |
9800 | const arelent *rel ATTRIBUTE_UNUSED) |
9801 | { | |
37c18eed SD |
9802 | size_t plt0_size = PLT_ENTRY_SIZE; |
9803 | size_t pltn_size = PLT_SMALL_ENTRY_SIZE; | |
9804 | ||
1dbade74 SD |
9805 | if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_BTI_PAC) |
9806 | { | |
1dbade74 SD |
9807 | if (elf_elfheader (plt->owner)->e_type == ET_EXEC) |
9808 | pltn_size = PLT_BTI_PAC_SMALL_ENTRY_SIZE; | |
9809 | else | |
9810 | pltn_size = PLT_PAC_SMALL_ENTRY_SIZE; | |
9811 | } | |
9812 | else if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_BTI) | |
37c18eed | 9813 | { |
37c18eed SD |
9814 | if (elf_elfheader (plt->owner)->e_type == ET_EXEC) |
9815 | pltn_size = PLT_BTI_SMALL_ENTRY_SIZE; | |
9816 | } | |
1dbade74 SD |
9817 | else if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_PAC) |
9818 | { | |
1dbade74 SD |
9819 | pltn_size = PLT_PAC_SMALL_ENTRY_SIZE; |
9820 | } | |
9821 | ||
37c18eed | 9822 | return plt->vma + plt0_size + i * pltn_size; |
a06ea964 NC |
9823 | } |
9824 | ||
d691934d NC |
9825 | /* Returns TRUE if NAME is an AArch64 mapping symbol. |
9826 | The ARM ELF standard defines $x (for A64 code) and $d (for data). | |
9827 | It also allows a period initiated suffix to be added to the symbol, ie: | |
9828 | "$[adtx]\.[:sym_char]+". */ | |
9829 | ||
9830 | static bfd_boolean | |
9831 | is_aarch64_mapping_symbol (const char * name) | |
9832 | { | |
9833 | return name != NULL /* Paranoia. */ | |
9834 | && name[0] == '$' /* Note: if objcopy --prefix-symbols has been used then | |
9835 | the mapping symbols could have acquired a prefix. | |
9836 | We do not support this here, since such symbols no | |
9837 | longer conform to the ARM ELF ABI. */ | |
9838 | && (name[1] == 'd' || name[1] == 'x') | |
9839 | && (name[2] == 0 || name[2] == '.'); | |
9840 | /* FIXME: Strictly speaking the symbol is only a valid mapping symbol if | |
9841 | any characters that follow the period are legal characters for the body | |
9842 | of a symbol's name. For now we just assume that this is the case. */ | |
9843 | } | |
9844 | ||
9845 | /* Make sure that mapping symbols in object files are not removed via the | |
9846 | "strip --strip-unneeded" tool. These symbols might needed in order to | |
9847 | correctly generate linked files. Once an object file has been linked, | |
9848 | it should be safe to remove them. */ | |
9849 | ||
9850 | static void | |
9851 | elfNN_aarch64_backend_symbol_processing (bfd *abfd, asymbol *sym) | |
9852 | { | |
9853 | if (((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
9854 | && sym->section != bfd_abs_section_ptr | |
9855 | && is_aarch64_mapping_symbol (sym->name)) | |
9856 | sym->flags |= BSF_KEEP; | |
9857 | } | |
9858 | ||
cd702818 SD |
9859 | /* Implement elf_backend_setup_gnu_properties for AArch64. It serves as a |
9860 | wrapper function for _bfd_aarch64_elf_link_setup_gnu_properties to account | |
9861 | for the effect of GNU properties of the output_bfd. */ | |
9862 | static bfd * | |
9863 | elfNN_aarch64_link_setup_gnu_properties (struct bfd_link_info *info) | |
9864 | { | |
9865 | uint32_t prop = elf_aarch64_tdata (info->output_bfd)->gnu_and_prop; | |
9866 | bfd *pbfd = _bfd_aarch64_elf_link_setup_gnu_properties (info, &prop); | |
9867 | elf_aarch64_tdata (info->output_bfd)->gnu_and_prop = prop; | |
37c18eed SD |
9868 | elf_aarch64_tdata (info->output_bfd)->plt_type |
9869 | |= (prop & GNU_PROPERTY_AARCH64_FEATURE_1_BTI) ? PLT_BTI : 0; | |
9870 | setup_plt_values (info, elf_aarch64_tdata (info->output_bfd)->plt_type); | |
cd702818 SD |
9871 | return pbfd; |
9872 | } | |
9873 | ||
9874 | /* Implement elf_backend_merge_gnu_properties for AArch64. It serves as a | |
9875 | wrapper function for _bfd_aarch64_elf_merge_gnu_properties to account | |
9876 | for the effect of GNU properties of the output_bfd. */ | |
9877 | static bfd_boolean | |
9878 | elfNN_aarch64_merge_gnu_properties (struct bfd_link_info *info, | |
4e539114 | 9879 | bfd *abfd, bfd *bbfd, |
cd702818 SD |
9880 | elf_property *aprop, |
9881 | elf_property *bprop) | |
9882 | { | |
9883 | uint32_t prop | |
9884 | = elf_aarch64_tdata (info->output_bfd)->gnu_and_prop; | |
37c18eed SD |
9885 | |
9886 | /* If output has been marked with BTI using command line argument, give out | |
9887 | warning if necessary. */ | |
4e539114 SD |
9888 | /* Properties are merged per type, hence only check for warnings when merging |
9889 | GNU_PROPERTY_AARCH64_FEATURE_1_AND. */ | |
9890 | if (((aprop && aprop->pr_type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) | |
9891 | || (bprop && bprop->pr_type == GNU_PROPERTY_AARCH64_FEATURE_1_AND)) | |
9892 | && (prop & GNU_PROPERTY_AARCH64_FEATURE_1_BTI) | |
37c18eed SD |
9893 | && (!elf_aarch64_tdata (info->output_bfd)->no_bti_warn)) |
9894 | { | |
9895 | if ((aprop && !(aprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI)) | |
4e539114 | 9896 | || !aprop) |
37c18eed | 9897 | { |
8bf6d176 | 9898 | _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when " |
4e539114 SD |
9899 | "all inputs do not have BTI in NOTE section."), |
9900 | abfd); | |
9901 | } | |
9902 | if ((bprop && !(bprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI)) | |
9903 | || !bprop) | |
9904 | { | |
8bf6d176 | 9905 | _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when " |
4e539114 SD |
9906 | "all inputs do not have BTI in NOTE section."), |
9907 | bbfd); | |
37c18eed SD |
9908 | } |
9909 | } | |
9910 | ||
cd702818 SD |
9911 | return _bfd_aarch64_elf_merge_gnu_properties (info, abfd, aprop, |
9912 | bprop, prop); | |
9913 | } | |
a06ea964 NC |
9914 | |
9915 | /* We use this so we can override certain functions | |
9916 | (though currently we don't). */ | |
9917 | ||
cec5225b | 9918 | const struct elf_size_info elfNN_aarch64_size_info = |
a06ea964 | 9919 | { |
cec5225b YZ |
9920 | sizeof (ElfNN_External_Ehdr), |
9921 | sizeof (ElfNN_External_Phdr), | |
9922 | sizeof (ElfNN_External_Shdr), | |
9923 | sizeof (ElfNN_External_Rel), | |
9924 | sizeof (ElfNN_External_Rela), | |
9925 | sizeof (ElfNN_External_Sym), | |
9926 | sizeof (ElfNN_External_Dyn), | |
a06ea964 NC |
9927 | sizeof (Elf_External_Note), |
9928 | 4, /* Hash table entry size. */ | |
9929 | 1, /* Internal relocs per external relocs. */ | |
cec5225b YZ |
9930 | ARCH_SIZE, /* Arch size. */ |
9931 | LOG_FILE_ALIGN, /* Log_file_align. */ | |
9932 | ELFCLASSNN, EV_CURRENT, | |
9933 | bfd_elfNN_write_out_phdrs, | |
9934 | bfd_elfNN_write_shdrs_and_ehdr, | |
9935 | bfd_elfNN_checksum_contents, | |
9936 | bfd_elfNN_write_relocs, | |
9937 | bfd_elfNN_swap_symbol_in, | |
9938 | bfd_elfNN_swap_symbol_out, | |
9939 | bfd_elfNN_slurp_reloc_table, | |
9940 | bfd_elfNN_slurp_symbol_table, | |
9941 | bfd_elfNN_swap_dyn_in, | |
9942 | bfd_elfNN_swap_dyn_out, | |
9943 | bfd_elfNN_swap_reloc_in, | |
9944 | bfd_elfNN_swap_reloc_out, | |
9945 | bfd_elfNN_swap_reloca_in, | |
9946 | bfd_elfNN_swap_reloca_out | |
a06ea964 NC |
9947 | }; |
9948 | ||
9949 | #define ELF_ARCH bfd_arch_aarch64 | |
9950 | #define ELF_MACHINE_CODE EM_AARCH64 | |
9951 | #define ELF_MAXPAGESIZE 0x10000 | |
9952 | #define ELF_MINPAGESIZE 0x1000 | |
9953 | #define ELF_COMMONPAGESIZE 0x1000 | |
9954 | ||
07d6d2b8 | 9955 | #define bfd_elfNN_close_and_cleanup \ |
cec5225b | 9956 | elfNN_aarch64_close_and_cleanup |
a06ea964 | 9957 | |
07d6d2b8 | 9958 | #define bfd_elfNN_bfd_free_cached_info \ |
cec5225b | 9959 | elfNN_aarch64_bfd_free_cached_info |
a06ea964 | 9960 | |
cec5225b YZ |
9961 | #define bfd_elfNN_bfd_is_target_special_symbol \ |
9962 | elfNN_aarch64_is_target_special_symbol | |
a06ea964 | 9963 | |
07d6d2b8 | 9964 | #define bfd_elfNN_bfd_link_hash_table_create \ |
cec5225b | 9965 | elfNN_aarch64_link_hash_table_create |
a06ea964 | 9966 | |
cec5225b YZ |
9967 | #define bfd_elfNN_bfd_merge_private_bfd_data \ |
9968 | elfNN_aarch64_merge_private_bfd_data | |
a06ea964 | 9969 | |
cec5225b YZ |
9970 | #define bfd_elfNN_bfd_print_private_bfd_data \ |
9971 | elfNN_aarch64_print_private_bfd_data | |
a06ea964 | 9972 | |
cec5225b YZ |
9973 | #define bfd_elfNN_bfd_reloc_type_lookup \ |
9974 | elfNN_aarch64_reloc_type_lookup | |
a06ea964 | 9975 | |
cec5225b YZ |
9976 | #define bfd_elfNN_bfd_reloc_name_lookup \ |
9977 | elfNN_aarch64_reloc_name_lookup | |
a06ea964 | 9978 | |
cec5225b YZ |
9979 | #define bfd_elfNN_bfd_set_private_flags \ |
9980 | elfNN_aarch64_set_private_flags | |
a06ea964 | 9981 | |
cec5225b YZ |
9982 | #define bfd_elfNN_find_inliner_info \ |
9983 | elfNN_aarch64_find_inliner_info | |
a06ea964 | 9984 | |
37c18eed SD |
9985 | #define bfd_elfNN_get_synthetic_symtab \ |
9986 | elfNN_aarch64_get_synthetic_symtab | |
9987 | ||
cec5225b YZ |
9988 | #define bfd_elfNN_mkobject \ |
9989 | elfNN_aarch64_mkobject | |
a06ea964 | 9990 | |
cec5225b YZ |
9991 | #define bfd_elfNN_new_section_hook \ |
9992 | elfNN_aarch64_new_section_hook | |
a06ea964 NC |
9993 | |
9994 | #define elf_backend_adjust_dynamic_symbol \ | |
cec5225b | 9995 | elfNN_aarch64_adjust_dynamic_symbol |
a06ea964 NC |
9996 | |
9997 | #define elf_backend_always_size_sections \ | |
cec5225b | 9998 | elfNN_aarch64_always_size_sections |
a06ea964 NC |
9999 | |
10000 | #define elf_backend_check_relocs \ | |
cec5225b | 10001 | elfNN_aarch64_check_relocs |
a06ea964 NC |
10002 | |
10003 | #define elf_backend_copy_indirect_symbol \ | |
cec5225b | 10004 | elfNN_aarch64_copy_indirect_symbol |
a06ea964 | 10005 | |
823710d5 SN |
10006 | #define elf_backend_merge_symbol_attribute \ |
10007 | elfNN_aarch64_merge_symbol_attribute | |
10008 | ||
a06ea964 NC |
10009 | /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts |
10010 | to them in our hash. */ | |
10011 | #define elf_backend_create_dynamic_sections \ | |
cec5225b | 10012 | elfNN_aarch64_create_dynamic_sections |
a06ea964 NC |
10013 | |
10014 | #define elf_backend_init_index_section \ | |
10015 | _bfd_elf_init_2_index_sections | |
10016 | ||
a06ea964 | 10017 | #define elf_backend_finish_dynamic_sections \ |
cec5225b | 10018 | elfNN_aarch64_finish_dynamic_sections |
a06ea964 NC |
10019 | |
10020 | #define elf_backend_finish_dynamic_symbol \ | |
cec5225b | 10021 | elfNN_aarch64_finish_dynamic_symbol |
a06ea964 | 10022 | |
a06ea964 | 10023 | #define elf_backend_object_p \ |
cec5225b | 10024 | elfNN_aarch64_object_p |
a06ea964 | 10025 | |
07d6d2b8 | 10026 | #define elf_backend_output_arch_local_syms \ |
cec5225b | 10027 | elfNN_aarch64_output_arch_local_syms |
a06ea964 | 10028 | |
e7679060 AM |
10029 | #define elf_backend_maybe_function_sym \ |
10030 | elfNN_aarch64_maybe_function_sym | |
10031 | ||
a06ea964 | 10032 | #define elf_backend_plt_sym_val \ |
cec5225b | 10033 | elfNN_aarch64_plt_sym_val |
a06ea964 | 10034 | |
ed7e9d0b AM |
10035 | #define elf_backend_init_file_header \ |
10036 | elfNN_aarch64_init_file_header | |
a06ea964 NC |
10037 | |
10038 | #define elf_backend_relocate_section \ | |
cec5225b | 10039 | elfNN_aarch64_relocate_section |
a06ea964 NC |
10040 | |
10041 | #define elf_backend_reloc_type_class \ | |
cec5225b | 10042 | elfNN_aarch64_reloc_type_class |
a06ea964 | 10043 | |
a06ea964 | 10044 | #define elf_backend_section_from_shdr \ |
cec5225b | 10045 | elfNN_aarch64_section_from_shdr |
a06ea964 NC |
10046 | |
10047 | #define elf_backend_size_dynamic_sections \ | |
cec5225b | 10048 | elfNN_aarch64_size_dynamic_sections |
a06ea964 NC |
10049 | |
10050 | #define elf_backend_size_info \ | |
cec5225b | 10051 | elfNN_aarch64_size_info |
a06ea964 | 10052 | |
68fcca92 JW |
10053 | #define elf_backend_write_section \ |
10054 | elfNN_aarch64_write_section | |
10055 | ||
d691934d NC |
10056 | #define elf_backend_symbol_processing \ |
10057 | elfNN_aarch64_backend_symbol_processing | |
10058 | ||
cd702818 SD |
10059 | #define elf_backend_setup_gnu_properties \ |
10060 | elfNN_aarch64_link_setup_gnu_properties | |
10061 | ||
10062 | #define elf_backend_merge_gnu_properties \ | |
10063 | elfNN_aarch64_merge_gnu_properties | |
10064 | ||
a06ea964 | 10065 | #define elf_backend_can_refcount 1 |
59c108f7 | 10066 | #define elf_backend_can_gc_sections 1 |
a06ea964 NC |
10067 | #define elf_backend_plt_readonly 1 |
10068 | #define elf_backend_want_got_plt 1 | |
10069 | #define elf_backend_want_plt_sym 0 | |
5474d94f | 10070 | #define elf_backend_want_dynrelro 1 |
a06ea964 NC |
10071 | #define elf_backend_may_use_rel_p 0 |
10072 | #define elf_backend_may_use_rela_p 1 | |
10073 | #define elf_backend_default_use_rela_p 1 | |
07d6d2b8 | 10074 | #define elf_backend_rela_normal 1 |
64f52338 | 10075 | #define elf_backend_dtrel_excludes_plt 1 |
a06ea964 | 10076 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3) |
c495064d | 10077 | #define elf_backend_default_execstack 0 |
32f573bc | 10078 | #define elf_backend_extern_protected_data 1 |
7f784814 | 10079 | #define elf_backend_hash_symbol elf_aarch64_hash_symbol |
a06ea964 | 10080 | |
07d6d2b8 | 10081 | #undef elf_backend_obj_attrs_section |
a06ea964 NC |
10082 | #define elf_backend_obj_attrs_section ".ARM.attributes" |
10083 | ||
cec5225b | 10084 | #include "elfNN-target.h" |
a75cf613 ES |
10085 | |
10086 | /* CloudABI support. */ | |
10087 | ||
10088 | #undef TARGET_LITTLE_SYM | |
10089 | #define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec | |
10090 | #undef TARGET_LITTLE_NAME | |
10091 | #define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi" | |
10092 | #undef TARGET_BIG_SYM | |
10093 | #define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec | |
10094 | #undef TARGET_BIG_NAME | |
10095 | #define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi" | |
10096 | ||
10097 | #undef ELF_OSABI | |
10098 | #define ELF_OSABI ELFOSABI_CLOUDABI | |
10099 | ||
10100 | #undef elfNN_bed | |
10101 | #define elfNN_bed elfNN_aarch64_cloudabi_bed | |
10102 | ||
10103 | #include "elfNN-target.h" |