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cec5225b | 1 | /* AArch64-specific support for NN-bit ELF. |
82704155 | 2 | Copyright (C) 2009-2019 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" |
a06ea964 | 147 | |
cec5225b YZ |
148 | #define ARCH_SIZE NN |
149 | ||
150 | #if ARCH_SIZE == 64 | |
151 | #define AARCH64_R(NAME) R_AARCH64_ ## NAME | |
152 | #define AARCH64_R_STR(NAME) "R_AARCH64_" #NAME | |
a6bb11b2 YZ |
153 | #define HOWTO64(...) HOWTO (__VA_ARGS__) |
154 | #define HOWTO32(...) EMPTY_HOWTO (0) | |
cec5225b | 155 | #define LOG_FILE_ALIGN 3 |
f955cccf | 156 | #define BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC BFD_RELOC_AARCH64_TLSDESC_LD64_LO12 |
cec5225b YZ |
157 | #endif |
158 | ||
159 | #if ARCH_SIZE == 32 | |
160 | #define AARCH64_R(NAME) R_AARCH64_P32_ ## NAME | |
161 | #define AARCH64_R_STR(NAME) "R_AARCH64_P32_" #NAME | |
a6bb11b2 YZ |
162 | #define HOWTO64(...) EMPTY_HOWTO (0) |
163 | #define HOWTO32(...) HOWTO (__VA_ARGS__) | |
cec5225b | 164 | #define LOG_FILE_ALIGN 2 |
07d6d2b8 AM |
165 | #define BFD_RELOC_AARCH64_TLSDESC_LD32_LO12 BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC |
166 | #define R_AARCH64_P32_TLSDESC_ADD_LO12 R_AARCH64_P32_TLSDESC_ADD_LO12_NC | |
cec5225b YZ |
167 | #endif |
168 | ||
a6bb11b2 | 169 | #define IS_AARCH64_TLS_RELOC(R_TYPE) \ |
4c0a9a6f JW |
170 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \ |
171 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \ | |
3c12b054 | 172 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \ |
3e8286c0 | 173 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \ |
1aa66fb1 | 174 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \ |
a6bb11b2 | 175 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \ |
a6bb11b2 | 176 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC \ |
4c0a9a6f | 177 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC \ |
a6bb11b2 | 178 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \ |
4c0a9a6f JW |
179 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC \ |
180 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1 \ | |
6ffe9a1b | 181 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12 \ |
40fbed84 | 182 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12 \ |
753999c1 | 183 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC \ |
73f925cc | 184 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \ |
f69e4920 | 185 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \ |
77a69ff8 | 186 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 \ |
07c9aa07 JW |
187 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12 \ |
188 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC \ | |
189 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12 \ | |
190 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC \ | |
191 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12 \ | |
192 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC \ | |
193 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12 \ | |
194 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC \ | |
6ffe9a1b JW |
195 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0 \ |
196 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC \ | |
197 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1 \ | |
198 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC \ | |
199 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2 \ | |
a6bb11b2 | 200 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 \ |
4c0a9a6f | 201 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12 \ |
a6bb11b2 | 202 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC \ |
e04ef022 RL |
203 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12 \ |
204 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC \ | |
205 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12 \ | |
206 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC \ | |
207 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12 \ | |
208 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC \ | |
209 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12 \ | |
210 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC \ | |
a6bb11b2 YZ |
211 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0 \ |
212 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC \ | |
4c0a9a6f JW |
213 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 \ |
214 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC \ | |
215 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 \ | |
a6bb11b2 YZ |
216 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPMOD \ |
217 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPREL \ | |
218 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_TPREL \ | |
a06ea964 NC |
219 | || IS_AARCH64_TLSDESC_RELOC ((R_TYPE))) |
220 | ||
9331eea1 | 221 | #define IS_AARCH64_TLS_RELAX_RELOC(R_TYPE) \ |
f955cccf NC |
222 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \ |
223 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12 \ | |
4af68b9c JW |
224 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \ |
225 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \ | |
226 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \ | |
227 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \ | |
228 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC \ | |
0484b454 RL |
229 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \ |
230 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \ | |
231 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1 \ | |
232 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \ | |
4af68b9c | 233 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \ |
9331eea1 JW |
234 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \ |
235 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \ | |
ac734732 RL |
236 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \ |
237 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \ | |
9331eea1 JW |
238 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \ |
239 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \ | |
240 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC \ | |
259364ad JW |
241 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \ |
242 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \ | |
4af68b9c | 243 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21) |
9331eea1 | 244 | |
a6bb11b2 | 245 | #define IS_AARCH64_TLSDESC_RELOC(R_TYPE) \ |
4c0a9a6f JW |
246 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC \ |
247 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \ | |
f955cccf | 248 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12 \ |
a6bb11b2 | 249 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \ |
389b8029 | 250 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \ |
4c0a9a6f | 251 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \ |
a6bb11b2 | 252 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC \ |
f955cccf | 253 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD64_LO12 \ |
a6bb11b2 | 254 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \ |
4c0a9a6f JW |
255 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \ |
256 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \ | |
257 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1) | |
a06ea964 | 258 | |
6353d82b | 259 | #define ELIMINATE_COPY_RELOCS 1 |
a06ea964 | 260 | |
a06ea964 | 261 | /* Return size of a relocation entry. HTAB is the bfd's |
cec5225b YZ |
262 | elf_aarch64_link_hash_entry. */ |
263 | #define RELOC_SIZE(HTAB) (sizeof (ElfNN_External_Rela)) | |
a06ea964 | 264 | |
cec5225b | 265 | /* GOT Entry size - 8 bytes in ELF64 and 4 bytes in ELF32. */ |
07d6d2b8 AM |
266 | #define GOT_ENTRY_SIZE (ARCH_SIZE / 8) |
267 | #define PLT_ENTRY_SIZE (32) | |
268 | #define PLT_SMALL_ENTRY_SIZE (16) | |
269 | #define PLT_TLSDESC_ENTRY_SIZE (32) | |
37c18eed SD |
270 | /* PLT sizes with BTI insn. */ |
271 | #define PLT_BTI_ENTRY_SIZE (36) | |
272 | #define PLT_BTI_SMALL_ENTRY_SIZE (20) | |
273 | #define PLT_BTI_TLSDESC_ENTRY_SIZE (36) | |
1dbade74 SD |
274 | /* PLT sizes with PAC insn. */ |
275 | #define PLT_PAC_ENTRY_SIZE (36) | |
276 | #define PLT_PAC_SMALL_ENTRY_SIZE (20) | |
277 | /* PLT sizes with BTI and PAC insn. */ | |
278 | #define PLT_BTI_PAC_ENTRY_SIZE (40) | |
279 | #define PLT_BTI_PAC_SMALL_ENTRY_SIZE (24) | |
a06ea964 | 280 | |
2d0ca824 | 281 | /* Encoding of the nop instruction. */ |
a06ea964 NC |
282 | #define INSN_NOP 0xd503201f |
283 | ||
284 | #define aarch64_compute_jump_table_size(htab) \ | |
285 | (((htab)->root.srelplt == NULL) ? 0 \ | |
286 | : (htab)->root.srelplt->reloc_count * GOT_ENTRY_SIZE) | |
287 | ||
288 | /* The first entry in a procedure linkage table looks like this | |
289 | if the distance between the PLTGOT and the PLT is < 4GB use | |
290 | these PLT entries. Note that the dynamic linker gets &PLTGOT[2] | |
291 | in x16 and needs to work out PLTGOT[1] by using an address of | |
cec5225b YZ |
292 | [x16,#-GOT_ENTRY_SIZE]. */ |
293 | static const bfd_byte elfNN_aarch64_small_plt0_entry[PLT_ENTRY_SIZE] = | |
a06ea964 NC |
294 | { |
295 | 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */ | |
296 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */ | |
caed7120 | 297 | #if ARCH_SIZE == 64 |
a06ea964 NC |
298 | 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */ |
299 | 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */ | |
caed7120 YZ |
300 | #else |
301 | 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */ | |
302 | 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */ | |
303 | #endif | |
a06ea964 NC |
304 | 0x20, 0x02, 0x1f, 0xd6, /* br x17 */ |
305 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
306 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
307 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
308 | }; | |
309 | ||
37c18eed SD |
310 | static const bfd_byte elfNN_aarch64_small_plt0_bti_entry[PLT_BTI_ENTRY_SIZE] = |
311 | { | |
312 | 0x5f, 0x24, 0x03, 0xd5, /* bti c. */ | |
313 | 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */ | |
314 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */ | |
315 | #if ARCH_SIZE == 64 | |
316 | 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */ | |
317 | 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */ | |
318 | #else | |
319 | 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */ | |
320 | 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */ | |
321 | #endif | |
322 | 0x20, 0x02, 0x1f, 0xd6, /* br x17 */ | |
323 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
324 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
325 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
326 | }; | |
327 | ||
1dbade74 SD |
328 | static const bfd_byte elfNN_aarch64_small_plt0_pac_entry[PLT_PAC_ENTRY_SIZE] = |
329 | { | |
330 | 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */ | |
331 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */ | |
332 | #if ARCH_SIZE == 64 | |
333 | 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */ | |
334 | 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */ | |
335 | #else | |
336 | 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */ | |
337 | 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */ | |
338 | #endif | |
339 | 0x9f, 0x21, 0x03, 0xd5, /* autia1716 */ | |
340 | 0x20, 0x02, 0x1f, 0xd6, /* br x17 */ | |
341 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
342 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
343 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
344 | }; | |
345 | ||
346 | static const bfd_byte | |
347 | elfNN_aarch64_small_plt0_bti_pac_entry[PLT_BTI_PAC_ENTRY_SIZE] = | |
348 | { | |
349 | 0x5f, 0x24, 0x03, 0xd5, /* bti c. */ | |
350 | 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */ | |
351 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */ | |
352 | #if ARCH_SIZE == 64 | |
353 | 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */ | |
354 | 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */ | |
355 | #else | |
356 | 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */ | |
357 | 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */ | |
358 | #endif | |
359 | 0x9f, 0x21, 0x03, 0xd5, /* autia1716 */ | |
360 | 0x20, 0x02, 0x1f, 0xd6, /* br x17 */ | |
361 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
362 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
363 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
364 | }; | |
365 | ||
a06ea964 NC |
366 | /* Per function entry in a procedure linkage table looks like this |
367 | if the distance between the PLTGOT and the PLT is < 4GB use | |
37c18eed | 368 | these PLT entries. Use BTI versions of the PLTs when enabled. */ |
cec5225b | 369 | static const bfd_byte elfNN_aarch64_small_plt_entry[PLT_SMALL_ENTRY_SIZE] = |
a06ea964 NC |
370 | { |
371 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
caed7120 | 372 | #if ARCH_SIZE == 64 |
a06ea964 NC |
373 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ |
374 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
caed7120 YZ |
375 | #else |
376 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
377 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
378 | #endif | |
a06ea964 NC |
379 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ |
380 | }; | |
381 | ||
37c18eed SD |
382 | static const bfd_byte |
383 | elfNN_aarch64_small_plt_bti_entry[PLT_BTI_SMALL_ENTRY_SIZE] = | |
384 | { | |
385 | 0x5f, 0x24, 0x03, 0xd5, /* bti c. */ | |
386 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
387 | #if ARCH_SIZE == 64 | |
388 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ | |
389 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
390 | #else | |
391 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
392 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
393 | #endif | |
394 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ | |
395 | }; | |
396 | ||
1dbade74 SD |
397 | static const bfd_byte |
398 | elfNN_aarch64_small_plt_pac_entry[PLT_PAC_SMALL_ENTRY_SIZE] = | |
399 | { | |
400 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
401 | #if ARCH_SIZE == 64 | |
402 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ | |
403 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
404 | #else | |
405 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
406 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
407 | #endif | |
408 | 0x9f, 0x21, 0x03, 0xd5, /* autia1716 */ | |
409 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ | |
410 | }; | |
411 | ||
412 | static const bfd_byte | |
413 | elfNN_aarch64_small_plt_bti_pac_entry[PLT_BTI_PAC_SMALL_ENTRY_SIZE] = | |
414 | { | |
415 | 0x5f, 0x24, 0x03, 0xd5, /* bti c. */ | |
416 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
417 | #if ARCH_SIZE == 64 | |
418 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ | |
419 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
420 | #else | |
421 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
422 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
423 | #endif | |
424 | 0x9f, 0x21, 0x03, 0xd5, /* autia1716 */ | |
425 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ | |
426 | }; | |
427 | ||
a06ea964 | 428 | static const bfd_byte |
cec5225b | 429 | elfNN_aarch64_tlsdesc_small_plt_entry[PLT_TLSDESC_ENTRY_SIZE] = |
a06ea964 NC |
430 | { |
431 | 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */ | |
432 | 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */ | |
433 | 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */ | |
caed7120 YZ |
434 | #if ARCH_SIZE == 64 |
435 | 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */ | |
a06ea964 | 436 | 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */ |
caed7120 YZ |
437 | #else |
438 | 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */ | |
439 | 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */ | |
440 | #endif | |
441 | 0x40, 0x00, 0x1f, 0xd6, /* br x2 */ | |
a06ea964 NC |
442 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ |
443 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
444 | }; | |
445 | ||
37c18eed SD |
446 | static const bfd_byte |
447 | elfNN_aarch64_tlsdesc_small_plt_bti_entry[PLT_BTI_TLSDESC_ENTRY_SIZE] = | |
448 | { | |
449 | 0x5f, 0x24, 0x03, 0xd5, /* bti c. */ | |
450 | 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */ | |
451 | 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */ | |
452 | 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */ | |
453 | #if ARCH_SIZE == 64 | |
454 | 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */ | |
455 | 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */ | |
456 | #else | |
457 | 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */ | |
458 | 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */ | |
459 | #endif | |
460 | 0x40, 0x00, 0x1f, 0xd6, /* br x2 */ | |
461 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
462 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
463 | }; | |
464 | ||
07d6d2b8 AM |
465 | #define elf_info_to_howto elfNN_aarch64_info_to_howto |
466 | #define elf_info_to_howto_rel elfNN_aarch64_info_to_howto | |
a06ea964 NC |
467 | |
468 | #define AARCH64_ELF_ABI_VERSION 0 | |
a06ea964 NC |
469 | |
470 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ | |
471 | #define ALL_ONES (~ (bfd_vma) 0) | |
472 | ||
a6bb11b2 YZ |
473 | /* Indexed by the bfd interal reloc enumerators. |
474 | Therefore, the table needs to be synced with BFD_RELOC_AARCH64_* | |
475 | in reloc.c. */ | |
a06ea964 | 476 | |
a6bb11b2 | 477 | static reloc_howto_type elfNN_aarch64_howto_table[] = |
a06ea964 | 478 | { |
a6bb11b2 | 479 | EMPTY_HOWTO (0), |
a06ea964 | 480 | |
a6bb11b2 | 481 | /* Basic data relocations. */ |
a06ea964 | 482 | |
b7f28d87 JW |
483 | /* Deprecated, but retained for backwards compatibility. */ |
484 | HOWTO64 (R_AARCH64_NULL, /* type */ | |
a06ea964 | 485 | 0, /* rightshift */ |
6346d5ca | 486 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a6bb11b2 | 487 | 0, /* bitsize */ |
a06ea964 NC |
488 | FALSE, /* pc_relative */ |
489 | 0, /* bitpos */ | |
490 | complain_overflow_dont, /* complain_on_overflow */ | |
491 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 492 | "R_AARCH64_NULL", /* name */ |
a06ea964 NC |
493 | FALSE, /* partial_inplace */ |
494 | 0, /* src_mask */ | |
a6bb11b2 | 495 | 0, /* dst_mask */ |
a06ea964 | 496 | FALSE), /* pcrel_offset */ |
a6bb11b2 | 497 | HOWTO (R_AARCH64_NONE, /* type */ |
a06ea964 | 498 | 0, /* rightshift */ |
6346d5ca | 499 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a06ea964 NC |
500 | 0, /* bitsize */ |
501 | FALSE, /* pc_relative */ | |
502 | 0, /* bitpos */ | |
503 | complain_overflow_dont, /* complain_on_overflow */ | |
504 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 505 | "R_AARCH64_NONE", /* name */ |
a06ea964 NC |
506 | FALSE, /* partial_inplace */ |
507 | 0, /* src_mask */ | |
508 | 0, /* dst_mask */ | |
509 | FALSE), /* pcrel_offset */ | |
510 | ||
511 | /* .xword: (S+A) */ | |
a6bb11b2 | 512 | HOWTO64 (AARCH64_R (ABS64), /* type */ |
a06ea964 NC |
513 | 0, /* rightshift */ |
514 | 4, /* size (4 = long long) */ | |
515 | 64, /* bitsize */ | |
516 | FALSE, /* pc_relative */ | |
517 | 0, /* bitpos */ | |
518 | complain_overflow_unsigned, /* complain_on_overflow */ | |
519 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 520 | AARCH64_R_STR (ABS64), /* name */ |
a06ea964 NC |
521 | FALSE, /* partial_inplace */ |
522 | ALL_ONES, /* src_mask */ | |
523 | ALL_ONES, /* dst_mask */ | |
524 | FALSE), /* pcrel_offset */ | |
525 | ||
526 | /* .word: (S+A) */ | |
a6bb11b2 | 527 | HOWTO (AARCH64_R (ABS32), /* type */ |
a06ea964 NC |
528 | 0, /* rightshift */ |
529 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
530 | 32, /* bitsize */ | |
531 | FALSE, /* pc_relative */ | |
532 | 0, /* bitpos */ | |
533 | complain_overflow_unsigned, /* complain_on_overflow */ | |
534 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 535 | AARCH64_R_STR (ABS32), /* name */ |
a06ea964 NC |
536 | FALSE, /* partial_inplace */ |
537 | 0xffffffff, /* src_mask */ | |
538 | 0xffffffff, /* dst_mask */ | |
539 | FALSE), /* pcrel_offset */ | |
540 | ||
541 | /* .half: (S+A) */ | |
a6bb11b2 | 542 | HOWTO (AARCH64_R (ABS16), /* type */ |
a06ea964 NC |
543 | 0, /* rightshift */ |
544 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
545 | 16, /* bitsize */ | |
546 | FALSE, /* pc_relative */ | |
547 | 0, /* bitpos */ | |
548 | complain_overflow_unsigned, /* complain_on_overflow */ | |
549 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 550 | AARCH64_R_STR (ABS16), /* name */ |
a06ea964 NC |
551 | FALSE, /* partial_inplace */ |
552 | 0xffff, /* src_mask */ | |
553 | 0xffff, /* dst_mask */ | |
554 | FALSE), /* pcrel_offset */ | |
555 | ||
556 | /* .xword: (S+A-P) */ | |
a6bb11b2 | 557 | HOWTO64 (AARCH64_R (PREL64), /* type */ |
a06ea964 NC |
558 | 0, /* rightshift */ |
559 | 4, /* size (4 = long long) */ | |
560 | 64, /* bitsize */ | |
561 | TRUE, /* pc_relative */ | |
562 | 0, /* bitpos */ | |
563 | complain_overflow_signed, /* complain_on_overflow */ | |
564 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 565 | AARCH64_R_STR (PREL64), /* name */ |
a06ea964 NC |
566 | FALSE, /* partial_inplace */ |
567 | ALL_ONES, /* src_mask */ | |
568 | ALL_ONES, /* dst_mask */ | |
569 | TRUE), /* pcrel_offset */ | |
570 | ||
571 | /* .word: (S+A-P) */ | |
a6bb11b2 | 572 | HOWTO (AARCH64_R (PREL32), /* type */ |
a06ea964 NC |
573 | 0, /* rightshift */ |
574 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
575 | 32, /* bitsize */ | |
576 | TRUE, /* pc_relative */ | |
577 | 0, /* bitpos */ | |
578 | complain_overflow_signed, /* complain_on_overflow */ | |
579 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 580 | AARCH64_R_STR (PREL32), /* name */ |
a06ea964 NC |
581 | FALSE, /* partial_inplace */ |
582 | 0xffffffff, /* src_mask */ | |
583 | 0xffffffff, /* dst_mask */ | |
584 | TRUE), /* pcrel_offset */ | |
585 | ||
586 | /* .half: (S+A-P) */ | |
a6bb11b2 | 587 | HOWTO (AARCH64_R (PREL16), /* type */ |
a06ea964 NC |
588 | 0, /* rightshift */ |
589 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
590 | 16, /* bitsize */ | |
591 | TRUE, /* pc_relative */ | |
592 | 0, /* bitpos */ | |
593 | complain_overflow_signed, /* complain_on_overflow */ | |
594 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 595 | AARCH64_R_STR (PREL16), /* name */ |
a06ea964 NC |
596 | FALSE, /* partial_inplace */ |
597 | 0xffff, /* src_mask */ | |
598 | 0xffff, /* dst_mask */ | |
599 | TRUE), /* pcrel_offset */ | |
600 | ||
601 | /* Group relocations to create a 16, 32, 48 or 64 bit | |
602 | unsigned data or abs address inline. */ | |
603 | ||
604 | /* MOVZ: ((S+A) >> 0) & 0xffff */ | |
a6bb11b2 | 605 | HOWTO (AARCH64_R (MOVW_UABS_G0), /* type */ |
a06ea964 NC |
606 | 0, /* rightshift */ |
607 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
608 | 16, /* bitsize */ | |
609 | FALSE, /* pc_relative */ | |
610 | 0, /* bitpos */ | |
611 | complain_overflow_unsigned, /* complain_on_overflow */ | |
612 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 613 | AARCH64_R_STR (MOVW_UABS_G0), /* name */ |
a06ea964 NC |
614 | FALSE, /* partial_inplace */ |
615 | 0xffff, /* src_mask */ | |
616 | 0xffff, /* dst_mask */ | |
617 | FALSE), /* pcrel_offset */ | |
618 | ||
619 | /* MOVK: ((S+A) >> 0) & 0xffff [no overflow check] */ | |
a6bb11b2 | 620 | HOWTO (AARCH64_R (MOVW_UABS_G0_NC), /* type */ |
a06ea964 NC |
621 | 0, /* rightshift */ |
622 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
623 | 16, /* bitsize */ | |
624 | FALSE, /* pc_relative */ | |
625 | 0, /* bitpos */ | |
626 | complain_overflow_dont, /* complain_on_overflow */ | |
627 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 628 | AARCH64_R_STR (MOVW_UABS_G0_NC), /* name */ |
a06ea964 NC |
629 | FALSE, /* partial_inplace */ |
630 | 0xffff, /* src_mask */ | |
631 | 0xffff, /* dst_mask */ | |
632 | FALSE), /* pcrel_offset */ | |
633 | ||
634 | /* MOVZ: ((S+A) >> 16) & 0xffff */ | |
a6bb11b2 | 635 | HOWTO (AARCH64_R (MOVW_UABS_G1), /* type */ |
a06ea964 NC |
636 | 16, /* rightshift */ |
637 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
638 | 16, /* bitsize */ | |
639 | FALSE, /* pc_relative */ | |
640 | 0, /* bitpos */ | |
641 | complain_overflow_unsigned, /* complain_on_overflow */ | |
642 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 643 | AARCH64_R_STR (MOVW_UABS_G1), /* name */ |
a06ea964 NC |
644 | FALSE, /* partial_inplace */ |
645 | 0xffff, /* src_mask */ | |
646 | 0xffff, /* dst_mask */ | |
647 | FALSE), /* pcrel_offset */ | |
648 | ||
649 | /* MOVK: ((S+A) >> 16) & 0xffff [no overflow check] */ | |
a6bb11b2 | 650 | HOWTO64 (AARCH64_R (MOVW_UABS_G1_NC), /* type */ |
a06ea964 NC |
651 | 16, /* rightshift */ |
652 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
653 | 16, /* bitsize */ | |
654 | FALSE, /* pc_relative */ | |
655 | 0, /* bitpos */ | |
656 | complain_overflow_dont, /* complain_on_overflow */ | |
657 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 658 | AARCH64_R_STR (MOVW_UABS_G1_NC), /* name */ |
a06ea964 NC |
659 | FALSE, /* partial_inplace */ |
660 | 0xffff, /* src_mask */ | |
661 | 0xffff, /* dst_mask */ | |
662 | FALSE), /* pcrel_offset */ | |
663 | ||
664 | /* MOVZ: ((S+A) >> 32) & 0xffff */ | |
a6bb11b2 | 665 | HOWTO64 (AARCH64_R (MOVW_UABS_G2), /* type */ |
a06ea964 NC |
666 | 32, /* rightshift */ |
667 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
668 | 16, /* bitsize */ | |
669 | FALSE, /* pc_relative */ | |
670 | 0, /* bitpos */ | |
671 | complain_overflow_unsigned, /* complain_on_overflow */ | |
672 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 673 | AARCH64_R_STR (MOVW_UABS_G2), /* name */ |
a06ea964 NC |
674 | FALSE, /* partial_inplace */ |
675 | 0xffff, /* src_mask */ | |
676 | 0xffff, /* dst_mask */ | |
677 | FALSE), /* pcrel_offset */ | |
678 | ||
679 | /* MOVK: ((S+A) >> 32) & 0xffff [no overflow check] */ | |
a6bb11b2 | 680 | HOWTO64 (AARCH64_R (MOVW_UABS_G2_NC), /* type */ |
a06ea964 NC |
681 | 32, /* rightshift */ |
682 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
683 | 16, /* bitsize */ | |
684 | FALSE, /* pc_relative */ | |
685 | 0, /* bitpos */ | |
686 | complain_overflow_dont, /* complain_on_overflow */ | |
687 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 688 | AARCH64_R_STR (MOVW_UABS_G2_NC), /* name */ |
a06ea964 NC |
689 | FALSE, /* partial_inplace */ |
690 | 0xffff, /* src_mask */ | |
691 | 0xffff, /* dst_mask */ | |
692 | FALSE), /* pcrel_offset */ | |
693 | ||
694 | /* MOVZ: ((S+A) >> 48) & 0xffff */ | |
a6bb11b2 | 695 | HOWTO64 (AARCH64_R (MOVW_UABS_G3), /* type */ |
a06ea964 NC |
696 | 48, /* rightshift */ |
697 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
698 | 16, /* bitsize */ | |
699 | FALSE, /* pc_relative */ | |
700 | 0, /* bitpos */ | |
701 | complain_overflow_unsigned, /* complain_on_overflow */ | |
702 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 703 | AARCH64_R_STR (MOVW_UABS_G3), /* name */ |
a06ea964 NC |
704 | FALSE, /* partial_inplace */ |
705 | 0xffff, /* src_mask */ | |
706 | 0xffff, /* dst_mask */ | |
707 | FALSE), /* pcrel_offset */ | |
708 | ||
709 | /* Group relocations to create high part of a 16, 32, 48 or 64 bit | |
710 | signed data or abs address inline. Will change instruction | |
711 | to MOVN or MOVZ depending on sign of calculated value. */ | |
712 | ||
713 | /* MOV[ZN]: ((S+A) >> 0) & 0xffff */ | |
a6bb11b2 | 714 | HOWTO (AARCH64_R (MOVW_SABS_G0), /* type */ |
a06ea964 NC |
715 | 0, /* rightshift */ |
716 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c5e3a364 | 717 | 17, /* bitsize */ |
a06ea964 NC |
718 | FALSE, /* pc_relative */ |
719 | 0, /* bitpos */ | |
720 | complain_overflow_signed, /* complain_on_overflow */ | |
721 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 722 | AARCH64_R_STR (MOVW_SABS_G0), /* name */ |
a06ea964 NC |
723 | FALSE, /* partial_inplace */ |
724 | 0xffff, /* src_mask */ | |
725 | 0xffff, /* dst_mask */ | |
726 | FALSE), /* pcrel_offset */ | |
727 | ||
728 | /* MOV[ZN]: ((S+A) >> 16) & 0xffff */ | |
a6bb11b2 | 729 | HOWTO64 (AARCH64_R (MOVW_SABS_G1), /* type */ |
a06ea964 NC |
730 | 16, /* rightshift */ |
731 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c5e3a364 | 732 | 17, /* bitsize */ |
a06ea964 NC |
733 | FALSE, /* pc_relative */ |
734 | 0, /* bitpos */ | |
735 | complain_overflow_signed, /* complain_on_overflow */ | |
736 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 737 | AARCH64_R_STR (MOVW_SABS_G1), /* name */ |
a06ea964 NC |
738 | FALSE, /* partial_inplace */ |
739 | 0xffff, /* src_mask */ | |
740 | 0xffff, /* dst_mask */ | |
741 | FALSE), /* pcrel_offset */ | |
742 | ||
743 | /* MOV[ZN]: ((S+A) >> 32) & 0xffff */ | |
a6bb11b2 | 744 | HOWTO64 (AARCH64_R (MOVW_SABS_G2), /* type */ |
a06ea964 NC |
745 | 32, /* rightshift */ |
746 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c5e3a364 | 747 | 17, /* bitsize */ |
a06ea964 NC |
748 | FALSE, /* pc_relative */ |
749 | 0, /* bitpos */ | |
750 | complain_overflow_signed, /* complain_on_overflow */ | |
751 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 752 | AARCH64_R_STR (MOVW_SABS_G2), /* name */ |
a06ea964 NC |
753 | FALSE, /* partial_inplace */ |
754 | 0xffff, /* src_mask */ | |
755 | 0xffff, /* dst_mask */ | |
756 | FALSE), /* pcrel_offset */ | |
757 | ||
32247401 RL |
758 | /* Group relocations to create a 16, 32, 48 or 64 bit |
759 | PC relative address inline. */ | |
760 | ||
761 | /* MOV[NZ]: ((S+A-P) >> 0) & 0xffff */ | |
762 | HOWTO64 (AARCH64_R (MOVW_PREL_G0), /* type */ | |
763 | 0, /* rightshift */ | |
764 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
765 | 17, /* bitsize */ | |
766 | TRUE, /* pc_relative */ | |
767 | 0, /* bitpos */ | |
768 | complain_overflow_signed, /* complain_on_overflow */ | |
769 | bfd_elf_generic_reloc, /* special_function */ | |
770 | AARCH64_R_STR (MOVW_PREL_G0), /* name */ | |
771 | FALSE, /* partial_inplace */ | |
772 | 0xffff, /* src_mask */ | |
773 | 0xffff, /* dst_mask */ | |
774 | TRUE), /* pcrel_offset */ | |
775 | ||
776 | /* MOVK: ((S+A-P) >> 0) & 0xffff [no overflow check] */ | |
777 | HOWTO64 (AARCH64_R (MOVW_PREL_G0_NC), /* type */ | |
778 | 0, /* rightshift */ | |
779 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
780 | 16, /* bitsize */ | |
781 | TRUE, /* pc_relative */ | |
782 | 0, /* bitpos */ | |
783 | complain_overflow_dont, /* complain_on_overflow */ | |
784 | bfd_elf_generic_reloc, /* special_function */ | |
785 | AARCH64_R_STR (MOVW_PREL_G0_NC), /* name */ | |
786 | FALSE, /* partial_inplace */ | |
787 | 0xffff, /* src_mask */ | |
788 | 0xffff, /* dst_mask */ | |
789 | TRUE), /* pcrel_offset */ | |
790 | ||
791 | /* MOV[NZ]: ((S+A-P) >> 16) & 0xffff */ | |
792 | HOWTO64 (AARCH64_R (MOVW_PREL_G1), /* type */ | |
793 | 16, /* rightshift */ | |
794 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
795 | 17, /* bitsize */ | |
796 | TRUE, /* pc_relative */ | |
797 | 0, /* bitpos */ | |
798 | complain_overflow_signed, /* complain_on_overflow */ | |
799 | bfd_elf_generic_reloc, /* special_function */ | |
800 | AARCH64_R_STR (MOVW_PREL_G1), /* name */ | |
801 | FALSE, /* partial_inplace */ | |
802 | 0xffff, /* src_mask */ | |
803 | 0xffff, /* dst_mask */ | |
804 | TRUE), /* pcrel_offset */ | |
805 | ||
806 | /* MOVK: ((S+A-P) >> 16) & 0xffff [no overflow check] */ | |
807 | HOWTO64 (AARCH64_R (MOVW_PREL_G1_NC), /* type */ | |
808 | 16, /* rightshift */ | |
809 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
810 | 16, /* bitsize */ | |
811 | TRUE, /* pc_relative */ | |
812 | 0, /* bitpos */ | |
813 | complain_overflow_dont, /* complain_on_overflow */ | |
814 | bfd_elf_generic_reloc, /* special_function */ | |
815 | AARCH64_R_STR (MOVW_PREL_G1_NC), /* name */ | |
816 | FALSE, /* partial_inplace */ | |
817 | 0xffff, /* src_mask */ | |
818 | 0xffff, /* dst_mask */ | |
819 | TRUE), /* pcrel_offset */ | |
820 | ||
821 | /* MOV[NZ]: ((S+A-P) >> 32) & 0xffff */ | |
822 | HOWTO64 (AARCH64_R (MOVW_PREL_G2), /* type */ | |
823 | 32, /* rightshift */ | |
824 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
825 | 17, /* bitsize */ | |
826 | TRUE, /* pc_relative */ | |
827 | 0, /* bitpos */ | |
828 | complain_overflow_signed, /* complain_on_overflow */ | |
829 | bfd_elf_generic_reloc, /* special_function */ | |
830 | AARCH64_R_STR (MOVW_PREL_G2), /* name */ | |
831 | FALSE, /* partial_inplace */ | |
832 | 0xffff, /* src_mask */ | |
833 | 0xffff, /* dst_mask */ | |
834 | TRUE), /* pcrel_offset */ | |
835 | ||
836 | /* MOVK: ((S+A-P) >> 32) & 0xffff [no overflow check] */ | |
837 | HOWTO64 (AARCH64_R (MOVW_PREL_G2_NC), /* type */ | |
838 | 32, /* rightshift */ | |
839 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
840 | 16, /* bitsize */ | |
841 | TRUE, /* pc_relative */ | |
842 | 0, /* bitpos */ | |
843 | complain_overflow_dont, /* complain_on_overflow */ | |
844 | bfd_elf_generic_reloc, /* special_function */ | |
845 | AARCH64_R_STR (MOVW_PREL_G2_NC), /* name */ | |
846 | FALSE, /* partial_inplace */ | |
847 | 0xffff, /* src_mask */ | |
848 | 0xffff, /* dst_mask */ | |
849 | TRUE), /* pcrel_offset */ | |
850 | ||
851 | /* MOV[NZ]: ((S+A-P) >> 48) & 0xffff */ | |
852 | HOWTO64 (AARCH64_R (MOVW_PREL_G3), /* type */ | |
853 | 48, /* rightshift */ | |
854 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
855 | 16, /* bitsize */ | |
856 | TRUE, /* pc_relative */ | |
857 | 0, /* bitpos */ | |
858 | complain_overflow_dont, /* complain_on_overflow */ | |
859 | bfd_elf_generic_reloc, /* special_function */ | |
860 | AARCH64_R_STR (MOVW_PREL_G3), /* name */ | |
861 | FALSE, /* partial_inplace */ | |
862 | 0xffff, /* src_mask */ | |
863 | 0xffff, /* dst_mask */ | |
864 | TRUE), /* pcrel_offset */ | |
865 | ||
a06ea964 NC |
866 | /* Relocations to generate 19, 21 and 33 bit PC-relative load/store |
867 | addresses: PG(x) is (x & ~0xfff). */ | |
868 | ||
869 | /* LD-lit: ((S+A-P) >> 2) & 0x7ffff */ | |
a6bb11b2 | 870 | HOWTO (AARCH64_R (LD_PREL_LO19), /* type */ |
a06ea964 NC |
871 | 2, /* rightshift */ |
872 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
873 | 19, /* bitsize */ | |
874 | TRUE, /* pc_relative */ | |
875 | 0, /* bitpos */ | |
876 | complain_overflow_signed, /* complain_on_overflow */ | |
877 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 878 | AARCH64_R_STR (LD_PREL_LO19), /* name */ |
a06ea964 NC |
879 | FALSE, /* partial_inplace */ |
880 | 0x7ffff, /* src_mask */ | |
881 | 0x7ffff, /* dst_mask */ | |
882 | TRUE), /* pcrel_offset */ | |
883 | ||
884 | /* ADR: (S+A-P) & 0x1fffff */ | |
a6bb11b2 | 885 | HOWTO (AARCH64_R (ADR_PREL_LO21), /* type */ |
a06ea964 NC |
886 | 0, /* rightshift */ |
887 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
888 | 21, /* bitsize */ | |
889 | TRUE, /* pc_relative */ | |
890 | 0, /* bitpos */ | |
891 | complain_overflow_signed, /* complain_on_overflow */ | |
892 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 893 | AARCH64_R_STR (ADR_PREL_LO21), /* name */ |
a06ea964 NC |
894 | FALSE, /* partial_inplace */ |
895 | 0x1fffff, /* src_mask */ | |
896 | 0x1fffff, /* dst_mask */ | |
897 | TRUE), /* pcrel_offset */ | |
898 | ||
899 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
a6bb11b2 | 900 | HOWTO (AARCH64_R (ADR_PREL_PG_HI21), /* type */ |
a06ea964 NC |
901 | 12, /* rightshift */ |
902 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
903 | 21, /* bitsize */ | |
904 | TRUE, /* pc_relative */ | |
905 | 0, /* bitpos */ | |
906 | complain_overflow_signed, /* complain_on_overflow */ | |
907 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 908 | AARCH64_R_STR (ADR_PREL_PG_HI21), /* name */ |
a06ea964 NC |
909 | FALSE, /* partial_inplace */ |
910 | 0x1fffff, /* src_mask */ | |
911 | 0x1fffff, /* dst_mask */ | |
912 | TRUE), /* pcrel_offset */ | |
913 | ||
914 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff [no overflow check] */ | |
a6bb11b2 | 915 | HOWTO64 (AARCH64_R (ADR_PREL_PG_HI21_NC), /* type */ |
a06ea964 NC |
916 | 12, /* rightshift */ |
917 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
918 | 21, /* bitsize */ | |
919 | TRUE, /* pc_relative */ | |
920 | 0, /* bitpos */ | |
921 | complain_overflow_dont, /* complain_on_overflow */ | |
922 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 923 | AARCH64_R_STR (ADR_PREL_PG_HI21_NC), /* name */ |
a06ea964 NC |
924 | FALSE, /* partial_inplace */ |
925 | 0x1fffff, /* src_mask */ | |
926 | 0x1fffff, /* dst_mask */ | |
927 | TRUE), /* pcrel_offset */ | |
928 | ||
929 | /* ADD: (S+A) & 0xfff [no overflow check] */ | |
a6bb11b2 | 930 | HOWTO (AARCH64_R (ADD_ABS_LO12_NC), /* type */ |
a06ea964 NC |
931 | 0, /* rightshift */ |
932 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
933 | 12, /* bitsize */ | |
934 | FALSE, /* pc_relative */ | |
935 | 10, /* bitpos */ | |
936 | complain_overflow_dont, /* complain_on_overflow */ | |
937 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 938 | AARCH64_R_STR (ADD_ABS_LO12_NC), /* name */ |
a06ea964 NC |
939 | FALSE, /* partial_inplace */ |
940 | 0x3ffc00, /* src_mask */ | |
941 | 0x3ffc00, /* dst_mask */ | |
942 | FALSE), /* pcrel_offset */ | |
943 | ||
944 | /* LD/ST8: (S+A) & 0xfff */ | |
a6bb11b2 | 945 | HOWTO (AARCH64_R (LDST8_ABS_LO12_NC), /* type */ |
a06ea964 NC |
946 | 0, /* rightshift */ |
947 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
948 | 12, /* bitsize */ | |
949 | FALSE, /* pc_relative */ | |
950 | 0, /* bitpos */ | |
951 | complain_overflow_dont, /* complain_on_overflow */ | |
952 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 953 | AARCH64_R_STR (LDST8_ABS_LO12_NC), /* name */ |
a06ea964 NC |
954 | FALSE, /* partial_inplace */ |
955 | 0xfff, /* src_mask */ | |
956 | 0xfff, /* dst_mask */ | |
957 | FALSE), /* pcrel_offset */ | |
958 | ||
959 | /* Relocations for control-flow instructions. */ | |
960 | ||
961 | /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */ | |
a6bb11b2 | 962 | HOWTO (AARCH64_R (TSTBR14), /* type */ |
a06ea964 NC |
963 | 2, /* rightshift */ |
964 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
965 | 14, /* bitsize */ | |
966 | TRUE, /* pc_relative */ | |
967 | 0, /* bitpos */ | |
968 | complain_overflow_signed, /* complain_on_overflow */ | |
969 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 970 | AARCH64_R_STR (TSTBR14), /* name */ |
a06ea964 NC |
971 | FALSE, /* partial_inplace */ |
972 | 0x3fff, /* src_mask */ | |
973 | 0x3fff, /* dst_mask */ | |
974 | TRUE), /* pcrel_offset */ | |
975 | ||
976 | /* B.cond: ((S+A-P) >> 2) & 0x7ffff */ | |
a6bb11b2 | 977 | HOWTO (AARCH64_R (CONDBR19), /* type */ |
a06ea964 NC |
978 | 2, /* rightshift */ |
979 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
980 | 19, /* bitsize */ | |
981 | TRUE, /* pc_relative */ | |
982 | 0, /* bitpos */ | |
983 | complain_overflow_signed, /* complain_on_overflow */ | |
984 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 985 | AARCH64_R_STR (CONDBR19), /* name */ |
a06ea964 NC |
986 | FALSE, /* partial_inplace */ |
987 | 0x7ffff, /* src_mask */ | |
988 | 0x7ffff, /* dst_mask */ | |
989 | TRUE), /* pcrel_offset */ | |
990 | ||
a06ea964 | 991 | /* B: ((S+A-P) >> 2) & 0x3ffffff */ |
a6bb11b2 | 992 | HOWTO (AARCH64_R (JUMP26), /* type */ |
a06ea964 NC |
993 | 2, /* rightshift */ |
994 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
995 | 26, /* bitsize */ | |
996 | TRUE, /* pc_relative */ | |
997 | 0, /* bitpos */ | |
998 | complain_overflow_signed, /* complain_on_overflow */ | |
999 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1000 | AARCH64_R_STR (JUMP26), /* name */ |
a06ea964 NC |
1001 | FALSE, /* partial_inplace */ |
1002 | 0x3ffffff, /* src_mask */ | |
1003 | 0x3ffffff, /* dst_mask */ | |
1004 | TRUE), /* pcrel_offset */ | |
1005 | ||
1006 | /* BL: ((S+A-P) >> 2) & 0x3ffffff */ | |
a6bb11b2 | 1007 | HOWTO (AARCH64_R (CALL26), /* type */ |
a06ea964 NC |
1008 | 2, /* rightshift */ |
1009 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1010 | 26, /* bitsize */ | |
1011 | TRUE, /* pc_relative */ | |
1012 | 0, /* bitpos */ | |
1013 | complain_overflow_signed, /* complain_on_overflow */ | |
1014 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1015 | AARCH64_R_STR (CALL26), /* name */ |
a06ea964 NC |
1016 | FALSE, /* partial_inplace */ |
1017 | 0x3ffffff, /* src_mask */ | |
1018 | 0x3ffffff, /* dst_mask */ | |
1019 | TRUE), /* pcrel_offset */ | |
1020 | ||
1021 | /* LD/ST16: (S+A) & 0xffe */ | |
a6bb11b2 | 1022 | HOWTO (AARCH64_R (LDST16_ABS_LO12_NC), /* type */ |
a06ea964 NC |
1023 | 1, /* rightshift */ |
1024 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1025 | 12, /* bitsize */ | |
1026 | FALSE, /* pc_relative */ | |
1027 | 0, /* bitpos */ | |
1028 | complain_overflow_dont, /* complain_on_overflow */ | |
1029 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1030 | AARCH64_R_STR (LDST16_ABS_LO12_NC), /* name */ |
a06ea964 NC |
1031 | FALSE, /* partial_inplace */ |
1032 | 0xffe, /* src_mask */ | |
1033 | 0xffe, /* dst_mask */ | |
1034 | FALSE), /* pcrel_offset */ | |
1035 | ||
1036 | /* LD/ST32: (S+A) & 0xffc */ | |
a6bb11b2 | 1037 | HOWTO (AARCH64_R (LDST32_ABS_LO12_NC), /* type */ |
a06ea964 NC |
1038 | 2, /* rightshift */ |
1039 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1040 | 12, /* bitsize */ | |
1041 | FALSE, /* pc_relative */ | |
1042 | 0, /* bitpos */ | |
1043 | complain_overflow_dont, /* complain_on_overflow */ | |
1044 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1045 | AARCH64_R_STR (LDST32_ABS_LO12_NC), /* name */ |
a06ea964 NC |
1046 | FALSE, /* partial_inplace */ |
1047 | 0xffc, /* src_mask */ | |
1048 | 0xffc, /* dst_mask */ | |
1049 | FALSE), /* pcrel_offset */ | |
1050 | ||
1051 | /* LD/ST64: (S+A) & 0xff8 */ | |
a6bb11b2 | 1052 | HOWTO (AARCH64_R (LDST64_ABS_LO12_NC), /* type */ |
a06ea964 NC |
1053 | 3, /* rightshift */ |
1054 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1055 | 12, /* bitsize */ | |
1056 | FALSE, /* pc_relative */ | |
1057 | 0, /* bitpos */ | |
1058 | complain_overflow_dont, /* complain_on_overflow */ | |
1059 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1060 | AARCH64_R_STR (LDST64_ABS_LO12_NC), /* name */ |
a06ea964 NC |
1061 | FALSE, /* partial_inplace */ |
1062 | 0xff8, /* src_mask */ | |
1063 | 0xff8, /* dst_mask */ | |
1064 | FALSE), /* pcrel_offset */ | |
1065 | ||
a06ea964 | 1066 | /* LD/ST128: (S+A) & 0xff0 */ |
a6bb11b2 | 1067 | HOWTO (AARCH64_R (LDST128_ABS_LO12_NC), /* type */ |
a06ea964 NC |
1068 | 4, /* rightshift */ |
1069 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1070 | 12, /* bitsize */ | |
1071 | FALSE, /* pc_relative */ | |
1072 | 0, /* bitpos */ | |
1073 | complain_overflow_dont, /* complain_on_overflow */ | |
1074 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1075 | AARCH64_R_STR (LDST128_ABS_LO12_NC), /* name */ |
a06ea964 NC |
1076 | FALSE, /* partial_inplace */ |
1077 | 0xff0, /* src_mask */ | |
1078 | 0xff0, /* dst_mask */ | |
1079 | FALSE), /* pcrel_offset */ | |
1080 | ||
f41aef5f RE |
1081 | /* Set a load-literal immediate field to bits |
1082 | 0x1FFFFC of G(S)-P */ | |
a6bb11b2 | 1083 | HOWTO (AARCH64_R (GOT_LD_PREL19), /* type */ |
f41aef5f RE |
1084 | 2, /* rightshift */ |
1085 | 2, /* size (0 = byte,1 = short,2 = long) */ | |
1086 | 19, /* bitsize */ | |
1087 | TRUE, /* pc_relative */ | |
1088 | 0, /* bitpos */ | |
1089 | complain_overflow_signed, /* complain_on_overflow */ | |
1090 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1091 | AARCH64_R_STR (GOT_LD_PREL19), /* name */ |
f41aef5f RE |
1092 | FALSE, /* partial_inplace */ |
1093 | 0xffffe0, /* src_mask */ | |
1094 | 0xffffe0, /* dst_mask */ | |
1095 | TRUE), /* pcrel_offset */ | |
1096 | ||
a06ea964 NC |
1097 | /* Get to the page for the GOT entry for the symbol |
1098 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 1099 | HOWTO (AARCH64_R (ADR_GOT_PAGE), /* type */ |
a06ea964 NC |
1100 | 12, /* rightshift */ |
1101 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1102 | 21, /* bitsize */ | |
1103 | TRUE, /* pc_relative */ | |
1104 | 0, /* bitpos */ | |
1105 | complain_overflow_dont, /* complain_on_overflow */ | |
1106 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1107 | AARCH64_R_STR (ADR_GOT_PAGE), /* name */ |
a06ea964 NC |
1108 | FALSE, /* partial_inplace */ |
1109 | 0x1fffff, /* src_mask */ | |
1110 | 0x1fffff, /* dst_mask */ | |
1111 | TRUE), /* pcrel_offset */ | |
1112 | ||
a6bb11b2 YZ |
1113 | /* LD64: GOT offset G(S) & 0xff8 */ |
1114 | HOWTO64 (AARCH64_R (LD64_GOT_LO12_NC), /* type */ | |
a06ea964 NC |
1115 | 3, /* rightshift */ |
1116 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1117 | 12, /* bitsize */ | |
1118 | FALSE, /* pc_relative */ | |
1119 | 0, /* bitpos */ | |
1120 | complain_overflow_dont, /* complain_on_overflow */ | |
1121 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1122 | AARCH64_R_STR (LD64_GOT_LO12_NC), /* name */ |
a06ea964 NC |
1123 | FALSE, /* partial_inplace */ |
1124 | 0xff8, /* src_mask */ | |
1125 | 0xff8, /* dst_mask */ | |
a6bb11b2 | 1126 | FALSE), /* pcrel_offset */ |
a06ea964 | 1127 | |
a6bb11b2 YZ |
1128 | /* LD32: GOT offset G(S) & 0xffc */ |
1129 | HOWTO32 (AARCH64_R (LD32_GOT_LO12_NC), /* type */ | |
1130 | 2, /* rightshift */ | |
1131 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1132 | 12, /* bitsize */ | |
1133 | FALSE, /* pc_relative */ | |
1134 | 0, /* bitpos */ | |
1135 | complain_overflow_dont, /* complain_on_overflow */ | |
1136 | bfd_elf_generic_reloc, /* special_function */ | |
1137 | AARCH64_R_STR (LD32_GOT_LO12_NC), /* name */ | |
1138 | FALSE, /* partial_inplace */ | |
1139 | 0xffc, /* src_mask */ | |
1140 | 0xffc, /* dst_mask */ | |
1141 | FALSE), /* pcrel_offset */ | |
a06ea964 | 1142 | |
ca632371 RL |
1143 | /* Lower 16 bits of GOT offset for the symbol. */ |
1144 | HOWTO64 (AARCH64_R (MOVW_GOTOFF_G0_NC), /* type */ | |
1145 | 0, /* rightshift */ | |
1146 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1147 | 16, /* bitsize */ | |
1148 | FALSE, /* pc_relative */ | |
1149 | 0, /* bitpos */ | |
1150 | complain_overflow_dont, /* complain_on_overflow */ | |
1151 | bfd_elf_generic_reloc, /* special_function */ | |
1152 | AARCH64_R_STR (MOVW_GOTOFF_G0_NC), /* name */ | |
1153 | FALSE, /* partial_inplace */ | |
1154 | 0xffff, /* src_mask */ | |
1155 | 0xffff, /* dst_mask */ | |
1156 | FALSE), /* pcrel_offset */ | |
1157 | ||
654248e7 RL |
1158 | /* Higher 16 bits of GOT offset for the symbol. */ |
1159 | HOWTO64 (AARCH64_R (MOVW_GOTOFF_G1), /* type */ | |
1160 | 16, /* rightshift */ | |
1161 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1162 | 16, /* bitsize */ | |
1163 | FALSE, /* pc_relative */ | |
1164 | 0, /* bitpos */ | |
1165 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1166 | bfd_elf_generic_reloc, /* special_function */ | |
1167 | AARCH64_R_STR (MOVW_GOTOFF_G1), /* name */ | |
1168 | FALSE, /* partial_inplace */ | |
1169 | 0xffff, /* src_mask */ | |
1170 | 0xffff, /* dst_mask */ | |
1171 | FALSE), /* pcrel_offset */ | |
1172 | ||
87f5fbcc RL |
1173 | /* LD64: GOT offset for the symbol. */ |
1174 | HOWTO64 (AARCH64_R (LD64_GOTOFF_LO15), /* type */ | |
1175 | 3, /* rightshift */ | |
1176 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1177 | 12, /* bitsize */ | |
1178 | FALSE, /* pc_relative */ | |
1179 | 0, /* bitpos */ | |
1180 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1181 | bfd_elf_generic_reloc, /* special_function */ | |
1182 | AARCH64_R_STR (LD64_GOTOFF_LO15), /* name */ | |
1183 | FALSE, /* partial_inplace */ | |
1184 | 0x7ff8, /* src_mask */ | |
1185 | 0x7ff8, /* dst_mask */ | |
1186 | FALSE), /* pcrel_offset */ | |
1187 | ||
3d715ce4 JW |
1188 | /* LD32: GOT offset to the page address of GOT table. |
1189 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x5ffc. */ | |
1190 | HOWTO32 (AARCH64_R (LD32_GOTPAGE_LO14), /* type */ | |
1191 | 2, /* rightshift */ | |
1192 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1193 | 12, /* bitsize */ | |
1194 | FALSE, /* pc_relative */ | |
1195 | 0, /* bitpos */ | |
1196 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1197 | bfd_elf_generic_reloc, /* special_function */ | |
1198 | AARCH64_R_STR (LD32_GOTPAGE_LO14), /* name */ | |
1199 | FALSE, /* partial_inplace */ | |
1200 | 0x5ffc, /* src_mask */ | |
1201 | 0x5ffc, /* dst_mask */ | |
1202 | FALSE), /* pcrel_offset */ | |
1203 | ||
a921b5bd JW |
1204 | /* LD64: GOT offset to the page address of GOT table. |
1205 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */ | |
1206 | HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15), /* type */ | |
1207 | 3, /* rightshift */ | |
1208 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1209 | 12, /* bitsize */ | |
1210 | FALSE, /* pc_relative */ | |
1211 | 0, /* bitpos */ | |
1212 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1213 | bfd_elf_generic_reloc, /* special_function */ | |
1214 | AARCH64_R_STR (LD64_GOTPAGE_LO15), /* name */ | |
1215 | FALSE, /* partial_inplace */ | |
1216 | 0x7ff8, /* src_mask */ | |
1217 | 0x7ff8, /* dst_mask */ | |
1218 | FALSE), /* pcrel_offset */ | |
1219 | ||
a06ea964 NC |
1220 | /* Get to the page for the GOT entry for the symbol |
1221 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 1222 | HOWTO (AARCH64_R (TLSGD_ADR_PAGE21), /* type */ |
a06ea964 NC |
1223 | 12, /* rightshift */ |
1224 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1225 | 21, /* bitsize */ | |
1226 | TRUE, /* pc_relative */ | |
1227 | 0, /* bitpos */ | |
1228 | complain_overflow_dont, /* complain_on_overflow */ | |
1229 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1230 | AARCH64_R_STR (TLSGD_ADR_PAGE21), /* name */ |
a06ea964 NC |
1231 | FALSE, /* partial_inplace */ |
1232 | 0x1fffff, /* src_mask */ | |
1233 | 0x1fffff, /* dst_mask */ | |
1234 | TRUE), /* pcrel_offset */ | |
1235 | ||
3c12b054 MS |
1236 | HOWTO (AARCH64_R (TLSGD_ADR_PREL21), /* type */ |
1237 | 0, /* rightshift */ | |
1238 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1239 | 21, /* bitsize */ | |
1240 | TRUE, /* pc_relative */ | |
1241 | 0, /* bitpos */ | |
1242 | complain_overflow_dont, /* complain_on_overflow */ | |
1243 | bfd_elf_generic_reloc, /* special_function */ | |
1244 | AARCH64_R_STR (TLSGD_ADR_PREL21), /* name */ | |
1245 | FALSE, /* partial_inplace */ | |
1246 | 0x1fffff, /* src_mask */ | |
1247 | 0x1fffff, /* dst_mask */ | |
1248 | TRUE), /* pcrel_offset */ | |
1249 | ||
a06ea964 | 1250 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ |
a6bb11b2 | 1251 | HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC), /* type */ |
a06ea964 NC |
1252 | 0, /* rightshift */ |
1253 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1254 | 12, /* bitsize */ | |
1255 | FALSE, /* pc_relative */ | |
1256 | 0, /* bitpos */ | |
1257 | complain_overflow_dont, /* complain_on_overflow */ | |
1258 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1259 | AARCH64_R_STR (TLSGD_ADD_LO12_NC), /* name */ |
a06ea964 NC |
1260 | FALSE, /* partial_inplace */ |
1261 | 0xfff, /* src_mask */ | |
1262 | 0xfff, /* dst_mask */ | |
1263 | FALSE), /* pcrel_offset */ | |
1264 | ||
3e8286c0 RL |
1265 | /* Lower 16 bits of GOT offset to tls_index. */ |
1266 | HOWTO64 (AARCH64_R (TLSGD_MOVW_G0_NC), /* type */ | |
1267 | 0, /* rightshift */ | |
1268 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1269 | 16, /* bitsize */ | |
1270 | FALSE, /* pc_relative */ | |
1271 | 0, /* bitpos */ | |
1272 | complain_overflow_dont, /* complain_on_overflow */ | |
1273 | bfd_elf_generic_reloc, /* special_function */ | |
1274 | AARCH64_R_STR (TLSGD_MOVW_G0_NC), /* name */ | |
1275 | FALSE, /* partial_inplace */ | |
1276 | 0xffff, /* src_mask */ | |
1277 | 0xffff, /* dst_mask */ | |
1278 | FALSE), /* pcrel_offset */ | |
1279 | ||
1aa66fb1 RL |
1280 | /* Higher 16 bits of GOT offset to tls_index. */ |
1281 | HOWTO64 (AARCH64_R (TLSGD_MOVW_G1), /* type */ | |
1282 | 16, /* rightshift */ | |
1283 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1284 | 16, /* bitsize */ | |
1285 | FALSE, /* pc_relative */ | |
1286 | 0, /* bitpos */ | |
1287 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1288 | bfd_elf_generic_reloc, /* special_function */ | |
1289 | AARCH64_R_STR (TLSGD_MOVW_G1), /* name */ | |
1290 | FALSE, /* partial_inplace */ | |
1291 | 0xffff, /* src_mask */ | |
1292 | 0xffff, /* dst_mask */ | |
1293 | FALSE), /* pcrel_offset */ | |
1294 | ||
a6bb11b2 | 1295 | HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21), /* type */ |
a06ea964 NC |
1296 | 12, /* rightshift */ |
1297 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1298 | 21, /* bitsize */ | |
1299 | FALSE, /* pc_relative */ | |
1300 | 0, /* bitpos */ | |
1301 | complain_overflow_dont, /* complain_on_overflow */ | |
1302 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1303 | AARCH64_R_STR (TLSIE_ADR_GOTTPREL_PAGE21), /* name */ |
a06ea964 NC |
1304 | FALSE, /* partial_inplace */ |
1305 | 0x1fffff, /* src_mask */ | |
1306 | 0x1fffff, /* dst_mask */ | |
1307 | FALSE), /* pcrel_offset */ | |
1308 | ||
a6bb11b2 | 1309 | HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC), /* type */ |
a06ea964 NC |
1310 | 3, /* rightshift */ |
1311 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1312 | 12, /* bitsize */ | |
1313 | FALSE, /* pc_relative */ | |
1314 | 0, /* bitpos */ | |
1315 | complain_overflow_dont, /* complain_on_overflow */ | |
1316 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1317 | AARCH64_R_STR (TLSIE_LD64_GOTTPREL_LO12_NC), /* name */ |
a06ea964 NC |
1318 | FALSE, /* partial_inplace */ |
1319 | 0xff8, /* src_mask */ | |
1320 | 0xff8, /* dst_mask */ | |
1321 | FALSE), /* pcrel_offset */ | |
1322 | ||
a6bb11b2 YZ |
1323 | HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC), /* type */ |
1324 | 2, /* rightshift */ | |
1325 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1326 | 12, /* bitsize */ | |
1327 | FALSE, /* pc_relative */ | |
1328 | 0, /* bitpos */ | |
1329 | complain_overflow_dont, /* complain_on_overflow */ | |
1330 | bfd_elf_generic_reloc, /* special_function */ | |
1331 | AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC), /* name */ | |
1332 | FALSE, /* partial_inplace */ | |
1333 | 0xffc, /* src_mask */ | |
1334 | 0xffc, /* dst_mask */ | |
1335 | FALSE), /* pcrel_offset */ | |
1336 | ||
1337 | HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19), /* type */ | |
bb3f9ed8 | 1338 | 2, /* rightshift */ |
a06ea964 | 1339 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
043bf05a | 1340 | 19, /* bitsize */ |
a06ea964 NC |
1341 | FALSE, /* pc_relative */ |
1342 | 0, /* bitpos */ | |
1343 | complain_overflow_dont, /* complain_on_overflow */ | |
1344 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1345 | AARCH64_R_STR (TLSIE_LD_GOTTPREL_PREL19), /* name */ |
a06ea964 NC |
1346 | FALSE, /* partial_inplace */ |
1347 | 0x1ffffc, /* src_mask */ | |
1348 | 0x1ffffc, /* dst_mask */ | |
1349 | FALSE), /* pcrel_offset */ | |
1350 | ||
3b957e5b RL |
1351 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */ |
1352 | 0, /* rightshift */ | |
1353 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1354 | 16, /* bitsize */ | |
1355 | FALSE, /* pc_relative */ | |
1356 | 0, /* bitpos */ | |
1357 | complain_overflow_dont, /* complain_on_overflow */ | |
1358 | bfd_elf_generic_reloc, /* special_function */ | |
1359 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC), /* name */ | |
1360 | FALSE, /* partial_inplace */ | |
1361 | 0xffff, /* src_mask */ | |
1362 | 0xffff, /* dst_mask */ | |
1363 | FALSE), /* pcrel_offset */ | |
1364 | ||
1365 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1), /* type */ | |
1366 | 16, /* rightshift */ | |
1367 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1368 | 16, /* bitsize */ | |
1369 | FALSE, /* pc_relative */ | |
1370 | 0, /* bitpos */ | |
1371 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1372 | bfd_elf_generic_reloc, /* special_function */ | |
1373 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1), /* name */ | |
1374 | FALSE, /* partial_inplace */ | |
1375 | 0xffff, /* src_mask */ | |
1376 | 0xffff, /* dst_mask */ | |
1377 | FALSE), /* pcrel_offset */ | |
1378 | ||
49df5539 JW |
1379 | /* ADD: bit[23:12] of byte offset to module TLS base address. */ |
1380 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_HI12), /* type */ | |
1381 | 12, /* rightshift */ | |
1382 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1383 | 12, /* bitsize */ | |
1384 | FALSE, /* pc_relative */ | |
1385 | 0, /* bitpos */ | |
1386 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1387 | bfd_elf_generic_reloc, /* special_function */ | |
1388 | AARCH64_R_STR (TLSLD_ADD_DTPREL_HI12), /* name */ | |
1389 | FALSE, /* partial_inplace */ | |
1390 | 0xfff, /* src_mask */ | |
1391 | 0xfff, /* dst_mask */ | |
1392 | FALSE), /* pcrel_offset */ | |
1393 | ||
70151fb5 JW |
1394 | /* Unsigned 12 bit byte offset to module TLS base address. */ |
1395 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12), /* type */ | |
1396 | 0, /* rightshift */ | |
1397 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1398 | 12, /* bitsize */ | |
1399 | FALSE, /* pc_relative */ | |
1400 | 0, /* bitpos */ | |
1401 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1402 | bfd_elf_generic_reloc, /* special_function */ | |
1403 | AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12), /* name */ | |
1404 | FALSE, /* partial_inplace */ | |
1405 | 0xfff, /* src_mask */ | |
1406 | 0xfff, /* dst_mask */ | |
1407 | FALSE), /* pcrel_offset */ | |
13289c10 JW |
1408 | |
1409 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12. */ | |
1410 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12_NC), /* type */ | |
1411 | 0, /* rightshift */ | |
1412 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1413 | 12, /* bitsize */ | |
1414 | FALSE, /* pc_relative */ | |
1415 | 0, /* bitpos */ | |
1416 | complain_overflow_dont, /* complain_on_overflow */ | |
1417 | bfd_elf_generic_reloc, /* special_function */ | |
1418 | AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12_NC), /* name */ | |
1419 | FALSE, /* partial_inplace */ | |
1420 | 0xfff, /* src_mask */ | |
1421 | 0xfff, /* dst_mask */ | |
1422 | FALSE), /* pcrel_offset */ | |
70151fb5 | 1423 | |
a12fad50 JW |
1424 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ |
1425 | HOWTO (AARCH64_R (TLSLD_ADD_LO12_NC), /* type */ | |
1426 | 0, /* rightshift */ | |
1427 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1428 | 12, /* bitsize */ | |
1429 | FALSE, /* pc_relative */ | |
1430 | 0, /* bitpos */ | |
1431 | complain_overflow_dont, /* complain_on_overflow */ | |
1432 | bfd_elf_generic_reloc, /* special_function */ | |
1433 | AARCH64_R_STR (TLSLD_ADD_LO12_NC), /* name */ | |
1434 | FALSE, /* partial_inplace */ | |
1435 | 0xfff, /* src_mask */ | |
1436 | 0xfff, /* dst_mask */ | |
1437 | FALSE), /* pcrel_offset */ | |
1438 | ||
1107e076 JW |
1439 | /* Get to the page for the GOT entry for the symbol |
1440 | (G(S) - P) using an ADRP instruction. */ | |
1441 | HOWTO (AARCH64_R (TLSLD_ADR_PAGE21), /* type */ | |
1442 | 12, /* rightshift */ | |
1443 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1444 | 21, /* bitsize */ | |
1445 | TRUE, /* pc_relative */ | |
1446 | 0, /* bitpos */ | |
1447 | complain_overflow_signed, /* complain_on_overflow */ | |
1448 | bfd_elf_generic_reloc, /* special_function */ | |
1449 | AARCH64_R_STR (TLSLD_ADR_PAGE21), /* name */ | |
1450 | FALSE, /* partial_inplace */ | |
1451 | 0x1fffff, /* src_mask */ | |
1452 | 0x1fffff, /* dst_mask */ | |
1453 | TRUE), /* pcrel_offset */ | |
1454 | ||
6c37fedc JW |
1455 | HOWTO (AARCH64_R (TLSLD_ADR_PREL21), /* type */ |
1456 | 0, /* rightshift */ | |
1457 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1458 | 21, /* bitsize */ | |
1459 | TRUE, /* pc_relative */ | |
1460 | 0, /* bitpos */ | |
1461 | complain_overflow_signed, /* complain_on_overflow */ | |
1462 | bfd_elf_generic_reloc, /* special_function */ | |
1463 | AARCH64_R_STR (TLSLD_ADR_PREL21), /* name */ | |
1464 | FALSE, /* partial_inplace */ | |
1465 | 0x1fffff, /* src_mask */ | |
1466 | 0x1fffff, /* dst_mask */ | |
1467 | TRUE), /* pcrel_offset */ | |
1468 | ||
4c562523 JW |
1469 | /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */ |
1470 | HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12), /* type */ | |
1471 | 1, /* rightshift */ | |
1472 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1473 | 11, /* bitsize */ | |
1474 | FALSE, /* pc_relative */ | |
1475 | 10, /* bitpos */ | |
1476 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1477 | bfd_elf_generic_reloc, /* special_function */ | |
1478 | AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12), /* name */ | |
1479 | FALSE, /* partial_inplace */ | |
1480 | 0x1ffc00, /* src_mask */ | |
1481 | 0x1ffc00, /* dst_mask */ | |
1482 | FALSE), /* pcrel_offset */ | |
1483 | ||
1484 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12, but no overflow check. */ | |
1485 | HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12_NC), /* type */ | |
1486 | 1, /* rightshift */ | |
1487 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1488 | 11, /* bitsize */ | |
1489 | FALSE, /* pc_relative */ | |
1490 | 10, /* bitpos */ | |
1491 | complain_overflow_dont, /* complain_on_overflow */ | |
1492 | bfd_elf_generic_reloc, /* special_function */ | |
1493 | AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12_NC), /* name */ | |
1494 | FALSE, /* partial_inplace */ | |
1495 | 0x1ffc00, /* src_mask */ | |
1496 | 0x1ffc00, /* dst_mask */ | |
1497 | FALSE), /* pcrel_offset */ | |
1498 | ||
1499 | /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */ | |
1500 | HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12), /* type */ | |
1501 | 2, /* rightshift */ | |
1502 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1503 | 10, /* bitsize */ | |
1504 | FALSE, /* pc_relative */ | |
1505 | 10, /* bitpos */ | |
1506 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1507 | bfd_elf_generic_reloc, /* special_function */ | |
1508 | AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12), /* name */ | |
1509 | FALSE, /* partial_inplace */ | |
1510 | 0x3ffc00, /* src_mask */ | |
1511 | 0x3ffc00, /* dst_mask */ | |
1512 | FALSE), /* pcrel_offset */ | |
1513 | ||
1514 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12, but no overflow check. */ | |
1515 | HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12_NC), /* type */ | |
1516 | 2, /* rightshift */ | |
1517 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1518 | 10, /* bitsize */ | |
1519 | FALSE, /* pc_relative */ | |
1520 | 10, /* bitpos */ | |
1521 | complain_overflow_dont, /* complain_on_overflow */ | |
1522 | bfd_elf_generic_reloc, /* special_function */ | |
1523 | AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12_NC), /* name */ | |
1524 | FALSE, /* partial_inplace */ | |
1525 | 0xffc00, /* src_mask */ | |
1526 | 0xffc00, /* dst_mask */ | |
1527 | FALSE), /* pcrel_offset */ | |
1528 | ||
1529 | /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */ | |
1530 | HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12), /* type */ | |
1531 | 3, /* rightshift */ | |
1532 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1533 | 9, /* bitsize */ | |
1534 | FALSE, /* pc_relative */ | |
1535 | 10, /* bitpos */ | |
1536 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1537 | bfd_elf_generic_reloc, /* special_function */ | |
1538 | AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12), /* name */ | |
1539 | FALSE, /* partial_inplace */ | |
1540 | 0x3ffc00, /* src_mask */ | |
1541 | 0x3ffc00, /* dst_mask */ | |
1542 | FALSE), /* pcrel_offset */ | |
1543 | ||
1544 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12, but no overflow check. */ | |
1545 | HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12_NC), /* type */ | |
1546 | 3, /* rightshift */ | |
1547 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1548 | 9, /* bitsize */ | |
1549 | FALSE, /* pc_relative */ | |
1550 | 10, /* bitpos */ | |
1551 | complain_overflow_dont, /* complain_on_overflow */ | |
1552 | bfd_elf_generic_reloc, /* special_function */ | |
1553 | AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12_NC), /* name */ | |
1554 | FALSE, /* partial_inplace */ | |
1555 | 0x7fc00, /* src_mask */ | |
1556 | 0x7fc00, /* dst_mask */ | |
1557 | FALSE), /* pcrel_offset */ | |
1558 | ||
1559 | /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */ | |
1560 | HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12), /* type */ | |
1561 | 0, /* rightshift */ | |
1562 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1563 | 12, /* bitsize */ | |
1564 | FALSE, /* pc_relative */ | |
1565 | 10, /* bitpos */ | |
1566 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1567 | bfd_elf_generic_reloc, /* special_function */ | |
1568 | AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12), /* name */ | |
1569 | FALSE, /* partial_inplace */ | |
1570 | 0x3ffc00, /* src_mask */ | |
1571 | 0x3ffc00, /* dst_mask */ | |
1572 | FALSE), /* pcrel_offset */ | |
1573 | ||
1574 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12, but no overflow check. */ | |
1575 | HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12_NC), /* type */ | |
1576 | 0, /* rightshift */ | |
1577 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1578 | 12, /* bitsize */ | |
1579 | FALSE, /* pc_relative */ | |
1580 | 10, /* bitpos */ | |
1581 | complain_overflow_dont, /* complain_on_overflow */ | |
1582 | bfd_elf_generic_reloc, /* special_function */ | |
1583 | AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12_NC), /* name */ | |
1584 | FALSE, /* partial_inplace */ | |
1585 | 0x3ffc00, /* src_mask */ | |
1586 | 0x3ffc00, /* dst_mask */ | |
1587 | FALSE), /* pcrel_offset */ | |
1588 | ||
49df5539 JW |
1589 | /* MOVZ: bit[15:0] of byte offset to module TLS base address. */ |
1590 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0), /* type */ | |
1591 | 0, /* rightshift */ | |
1592 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1593 | 16, /* bitsize */ | |
1594 | FALSE, /* pc_relative */ | |
1595 | 0, /* bitpos */ | |
1596 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1597 | bfd_elf_generic_reloc, /* special_function */ | |
1598 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0), /* name */ | |
1599 | FALSE, /* partial_inplace */ | |
1600 | 0xffff, /* src_mask */ | |
1601 | 0xffff, /* dst_mask */ | |
1602 | FALSE), /* pcrel_offset */ | |
1603 | ||
1604 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0. */ | |
1605 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0_NC), /* type */ | |
1606 | 0, /* rightshift */ | |
1607 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1608 | 16, /* bitsize */ | |
1609 | FALSE, /* pc_relative */ | |
1610 | 0, /* bitpos */ | |
1611 | complain_overflow_dont, /* complain_on_overflow */ | |
1612 | bfd_elf_generic_reloc, /* special_function */ | |
1613 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0_NC), /* name */ | |
1614 | FALSE, /* partial_inplace */ | |
1615 | 0xffff, /* src_mask */ | |
1616 | 0xffff, /* dst_mask */ | |
1617 | FALSE), /* pcrel_offset */ | |
1618 | ||
1619 | /* MOVZ: bit[31:16] of byte offset to module TLS base address. */ | |
1620 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G1), /* type */ | |
1621 | 16, /* rightshift */ | |
1622 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1623 | 16, /* bitsize */ | |
1624 | FALSE, /* pc_relative */ | |
1625 | 0, /* bitpos */ | |
1626 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1627 | bfd_elf_generic_reloc, /* special_function */ | |
1628 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1), /* name */ | |
1629 | FALSE, /* partial_inplace */ | |
1630 | 0xffff, /* src_mask */ | |
1631 | 0xffff, /* dst_mask */ | |
1632 | FALSE), /* pcrel_offset */ | |
1633 | ||
1634 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1. */ | |
1635 | HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G1_NC), /* type */ | |
1636 | 16, /* rightshift */ | |
1637 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1638 | 16, /* bitsize */ | |
1639 | FALSE, /* pc_relative */ | |
1640 | 0, /* bitpos */ | |
1641 | complain_overflow_dont, /* complain_on_overflow */ | |
1642 | bfd_elf_generic_reloc, /* special_function */ | |
1643 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1_NC), /* name */ | |
1644 | FALSE, /* partial_inplace */ | |
1645 | 0xffff, /* src_mask */ | |
1646 | 0xffff, /* dst_mask */ | |
1647 | FALSE), /* pcrel_offset */ | |
1648 | ||
1649 | /* MOVZ: bit[47:32] of byte offset to module TLS base address. */ | |
1650 | HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G2), /* type */ | |
1651 | 32, /* rightshift */ | |
1652 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1653 | 16, /* bitsize */ | |
1654 | FALSE, /* pc_relative */ | |
1655 | 0, /* bitpos */ | |
1656 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1657 | bfd_elf_generic_reloc, /* special_function */ | |
1658 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G2), /* name */ | |
1659 | FALSE, /* partial_inplace */ | |
1660 | 0xffff, /* src_mask */ | |
1661 | 0xffff, /* dst_mask */ | |
1662 | FALSE), /* pcrel_offset */ | |
1663 | ||
a6bb11b2 | 1664 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2), /* type */ |
bb3f9ed8 | 1665 | 32, /* rightshift */ |
a06ea964 | 1666 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1667 | 16, /* bitsize */ |
a06ea964 NC |
1668 | FALSE, /* pc_relative */ |
1669 | 0, /* bitpos */ | |
0172429c | 1670 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1671 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1672 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G2), /* name */ |
a06ea964 NC |
1673 | FALSE, /* partial_inplace */ |
1674 | 0xffff, /* src_mask */ | |
1675 | 0xffff, /* dst_mask */ | |
1676 | FALSE), /* pcrel_offset */ | |
1677 | ||
a6bb11b2 | 1678 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1), /* type */ |
bb3f9ed8 | 1679 | 16, /* rightshift */ |
a06ea964 | 1680 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1681 | 16, /* bitsize */ |
a06ea964 NC |
1682 | FALSE, /* pc_relative */ |
1683 | 0, /* bitpos */ | |
1684 | complain_overflow_dont, /* complain_on_overflow */ | |
1685 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1686 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1), /* name */ |
a06ea964 NC |
1687 | FALSE, /* partial_inplace */ |
1688 | 0xffff, /* src_mask */ | |
1689 | 0xffff, /* dst_mask */ | |
1690 | FALSE), /* pcrel_offset */ | |
1691 | ||
a6bb11b2 | 1692 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */ |
bb3f9ed8 | 1693 | 16, /* rightshift */ |
a06ea964 | 1694 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1695 | 16, /* bitsize */ |
a06ea964 NC |
1696 | FALSE, /* pc_relative */ |
1697 | 0, /* bitpos */ | |
1698 | complain_overflow_dont, /* complain_on_overflow */ | |
1699 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1700 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC), /* name */ |
a06ea964 NC |
1701 | FALSE, /* partial_inplace */ |
1702 | 0xffff, /* src_mask */ | |
1703 | 0xffff, /* dst_mask */ | |
1704 | FALSE), /* pcrel_offset */ | |
1705 | ||
a6bb11b2 | 1706 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0), /* type */ |
a06ea964 NC |
1707 | 0, /* rightshift */ |
1708 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
07875fbc | 1709 | 16, /* bitsize */ |
a06ea964 NC |
1710 | FALSE, /* pc_relative */ |
1711 | 0, /* bitpos */ | |
1712 | complain_overflow_dont, /* complain_on_overflow */ | |
1713 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1714 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0), /* name */ |
a06ea964 NC |
1715 | FALSE, /* partial_inplace */ |
1716 | 0xffff, /* src_mask */ | |
1717 | 0xffff, /* dst_mask */ | |
1718 | FALSE), /* pcrel_offset */ | |
1719 | ||
a6bb11b2 | 1720 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC), /* type */ |
a06ea964 NC |
1721 | 0, /* rightshift */ |
1722 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
07875fbc | 1723 | 16, /* bitsize */ |
a06ea964 NC |
1724 | FALSE, /* pc_relative */ |
1725 | 0, /* bitpos */ | |
1726 | complain_overflow_dont, /* complain_on_overflow */ | |
1727 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1728 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC), /* name */ |
a06ea964 NC |
1729 | FALSE, /* partial_inplace */ |
1730 | 0xffff, /* src_mask */ | |
1731 | 0xffff, /* dst_mask */ | |
1732 | FALSE), /* pcrel_offset */ | |
1733 | ||
a6bb11b2 | 1734 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12), /* type */ |
bb3f9ed8 | 1735 | 12, /* rightshift */ |
a06ea964 NC |
1736 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1737 | 12, /* bitsize */ | |
1738 | FALSE, /* pc_relative */ | |
1739 | 0, /* bitpos */ | |
bab91cce | 1740 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1741 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1742 | AARCH64_R_STR (TLSLE_ADD_TPREL_HI12), /* name */ |
a06ea964 NC |
1743 | FALSE, /* partial_inplace */ |
1744 | 0xfff, /* src_mask */ | |
1745 | 0xfff, /* dst_mask */ | |
1746 | FALSE), /* pcrel_offset */ | |
1747 | ||
a6bb11b2 | 1748 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12), /* type */ |
a06ea964 NC |
1749 | 0, /* rightshift */ |
1750 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1751 | 12, /* bitsize */ | |
1752 | FALSE, /* pc_relative */ | |
1753 | 0, /* bitpos */ | |
36e6c140 | 1754 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1755 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1756 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12), /* name */ |
a06ea964 NC |
1757 | FALSE, /* partial_inplace */ |
1758 | 0xfff, /* src_mask */ | |
1759 | 0xfff, /* dst_mask */ | |
1760 | FALSE), /* pcrel_offset */ | |
1761 | ||
a6bb11b2 | 1762 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC), /* type */ |
a06ea964 NC |
1763 | 0, /* rightshift */ |
1764 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1765 | 12, /* bitsize */ | |
1766 | FALSE, /* pc_relative */ | |
1767 | 0, /* bitpos */ | |
1768 | complain_overflow_dont, /* complain_on_overflow */ | |
1769 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1770 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC), /* name */ |
a06ea964 NC |
1771 | FALSE, /* partial_inplace */ |
1772 | 0xfff, /* src_mask */ | |
1773 | 0xfff, /* dst_mask */ | |
1774 | FALSE), /* pcrel_offset */ | |
a06ea964 | 1775 | |
84f1b9fb RL |
1776 | /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */ |
1777 | HOWTO (AARCH64_R (TLSLE_LDST16_TPREL_LO12), /* type */ | |
1778 | 1, /* rightshift */ | |
1779 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1780 | 11, /* bitsize */ | |
1781 | FALSE, /* pc_relative */ | |
1782 | 10, /* bitpos */ | |
1783 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1784 | bfd_elf_generic_reloc, /* special_function */ | |
1785 | AARCH64_R_STR (TLSLE_LDST16_TPREL_LO12), /* name */ | |
1786 | FALSE, /* partial_inplace */ | |
1787 | 0x1ffc00, /* src_mask */ | |
1788 | 0x1ffc00, /* dst_mask */ | |
1789 | FALSE), /* pcrel_offset */ | |
1790 | ||
1791 | /* Same as BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12, but no overflow check. */ | |
1792 | HOWTO (AARCH64_R (TLSLE_LDST16_TPREL_LO12_NC), /* type */ | |
1793 | 1, /* rightshift */ | |
1794 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1795 | 11, /* bitsize */ | |
1796 | FALSE, /* pc_relative */ | |
1797 | 10, /* bitpos */ | |
1798 | complain_overflow_dont, /* complain_on_overflow */ | |
1799 | bfd_elf_generic_reloc, /* special_function */ | |
1800 | AARCH64_R_STR (TLSLE_LDST16_TPREL_LO12_NC), /* name */ | |
1801 | FALSE, /* partial_inplace */ | |
1802 | 0x1ffc00, /* src_mask */ | |
1803 | 0x1ffc00, /* dst_mask */ | |
1804 | FALSE), /* pcrel_offset */ | |
1805 | ||
1806 | /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */ | |
1807 | HOWTO (AARCH64_R (TLSLE_LDST32_TPREL_LO12), /* type */ | |
1808 | 2, /* rightshift */ | |
1809 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1810 | 10, /* bitsize */ | |
1811 | FALSE, /* pc_relative */ | |
1812 | 10, /* bitpos */ | |
1813 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1814 | bfd_elf_generic_reloc, /* special_function */ | |
1815 | AARCH64_R_STR (TLSLE_LDST32_TPREL_LO12), /* name */ | |
1816 | FALSE, /* partial_inplace */ | |
1817 | 0xffc00, /* src_mask */ | |
1818 | 0xffc00, /* dst_mask */ | |
1819 | FALSE), /* pcrel_offset */ | |
1820 | ||
1821 | /* Same as BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12, but no overflow check. */ | |
1822 | HOWTO (AARCH64_R (TLSLE_LDST32_TPREL_LO12_NC), /* type */ | |
1823 | 2, /* rightshift */ | |
1824 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1825 | 10, /* bitsize */ | |
1826 | FALSE, /* pc_relative */ | |
1827 | 10, /* bitpos */ | |
1828 | complain_overflow_dont, /* complain_on_overflow */ | |
1829 | bfd_elf_generic_reloc, /* special_function */ | |
1830 | AARCH64_R_STR (TLSLE_LDST32_TPREL_LO12_NC), /* name */ | |
1831 | FALSE, /* partial_inplace */ | |
1832 | 0xffc00, /* src_mask */ | |
1833 | 0xffc00, /* dst_mask */ | |
1834 | FALSE), /* pcrel_offset */ | |
1835 | ||
1836 | /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */ | |
1837 | HOWTO (AARCH64_R (TLSLE_LDST64_TPREL_LO12), /* type */ | |
1838 | 3, /* rightshift */ | |
1839 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1840 | 9, /* bitsize */ | |
1841 | FALSE, /* pc_relative */ | |
1842 | 10, /* bitpos */ | |
1843 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1844 | bfd_elf_generic_reloc, /* special_function */ | |
1845 | AARCH64_R_STR (TLSLE_LDST64_TPREL_LO12), /* name */ | |
1846 | FALSE, /* partial_inplace */ | |
1847 | 0x7fc00, /* src_mask */ | |
1848 | 0x7fc00, /* dst_mask */ | |
1849 | FALSE), /* pcrel_offset */ | |
1850 | ||
1851 | /* Same as BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12, but no overflow check. */ | |
1852 | HOWTO (AARCH64_R (TLSLE_LDST64_TPREL_LO12_NC), /* type */ | |
1853 | 3, /* rightshift */ | |
1854 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1855 | 9, /* bitsize */ | |
1856 | FALSE, /* pc_relative */ | |
1857 | 10, /* bitpos */ | |
1858 | complain_overflow_dont, /* complain_on_overflow */ | |
1859 | bfd_elf_generic_reloc, /* special_function */ | |
1860 | AARCH64_R_STR (TLSLE_LDST64_TPREL_LO12_NC), /* name */ | |
1861 | FALSE, /* partial_inplace */ | |
1862 | 0x7fc00, /* src_mask */ | |
1863 | 0x7fc00, /* dst_mask */ | |
1864 | FALSE), /* pcrel_offset */ | |
1865 | ||
1866 | /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */ | |
1867 | HOWTO (AARCH64_R (TLSLE_LDST8_TPREL_LO12), /* type */ | |
1868 | 0, /* rightshift */ | |
1869 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1870 | 12, /* bitsize */ | |
1871 | FALSE, /* pc_relative */ | |
1872 | 10, /* bitpos */ | |
1873 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1874 | bfd_elf_generic_reloc, /* special_function */ | |
1875 | AARCH64_R_STR (TLSLE_LDST8_TPREL_LO12), /* name */ | |
1876 | FALSE, /* partial_inplace */ | |
1877 | 0x3ffc00, /* src_mask */ | |
1878 | 0x3ffc00, /* dst_mask */ | |
1879 | FALSE), /* pcrel_offset */ | |
1880 | ||
1881 | /* Same as BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12, but no overflow check. */ | |
1882 | HOWTO (AARCH64_R (TLSLE_LDST8_TPREL_LO12_NC), /* type */ | |
1883 | 0, /* rightshift */ | |
1884 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1885 | 12, /* bitsize */ | |
1886 | FALSE, /* pc_relative */ | |
1887 | 10, /* bitpos */ | |
1888 | complain_overflow_dont, /* complain_on_overflow */ | |
1889 | bfd_elf_generic_reloc, /* special_function */ | |
1890 | AARCH64_R_STR (TLSLE_LDST8_TPREL_LO12_NC), /* name */ | |
1891 | FALSE, /* partial_inplace */ | |
1892 | 0x3ffc00, /* src_mask */ | |
1893 | 0x3ffc00, /* dst_mask */ | |
1894 | FALSE), /* pcrel_offset */ | |
1895 | ||
a6bb11b2 | 1896 | HOWTO (AARCH64_R (TLSDESC_LD_PREL19), /* type */ |
bb3f9ed8 | 1897 | 2, /* rightshift */ |
a06ea964 | 1898 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1ada945d | 1899 | 19, /* bitsize */ |
a06ea964 NC |
1900 | TRUE, /* pc_relative */ |
1901 | 0, /* bitpos */ | |
1902 | complain_overflow_dont, /* complain_on_overflow */ | |
1903 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1904 | AARCH64_R_STR (TLSDESC_LD_PREL19), /* name */ |
a06ea964 | 1905 | FALSE, /* partial_inplace */ |
1ada945d MS |
1906 | 0x0ffffe0, /* src_mask */ |
1907 | 0x0ffffe0, /* dst_mask */ | |
a06ea964 NC |
1908 | TRUE), /* pcrel_offset */ |
1909 | ||
a6bb11b2 | 1910 | HOWTO (AARCH64_R (TLSDESC_ADR_PREL21), /* type */ |
a06ea964 NC |
1911 | 0, /* rightshift */ |
1912 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1913 | 21, /* bitsize */ | |
1914 | TRUE, /* pc_relative */ | |
1915 | 0, /* bitpos */ | |
1916 | complain_overflow_dont, /* complain_on_overflow */ | |
1917 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1918 | AARCH64_R_STR (TLSDESC_ADR_PREL21), /* name */ |
a06ea964 NC |
1919 | FALSE, /* partial_inplace */ |
1920 | 0x1fffff, /* src_mask */ | |
1921 | 0x1fffff, /* dst_mask */ | |
1922 | TRUE), /* pcrel_offset */ | |
1923 | ||
1924 | /* Get to the page for the GOT entry for the symbol | |
1925 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 1926 | HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21), /* type */ |
a06ea964 NC |
1927 | 12, /* rightshift */ |
1928 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1929 | 21, /* bitsize */ | |
1930 | TRUE, /* pc_relative */ | |
1931 | 0, /* bitpos */ | |
1932 | complain_overflow_dont, /* complain_on_overflow */ | |
1933 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1934 | AARCH64_R_STR (TLSDESC_ADR_PAGE21), /* name */ |
a06ea964 NC |
1935 | FALSE, /* partial_inplace */ |
1936 | 0x1fffff, /* src_mask */ | |
1937 | 0x1fffff, /* dst_mask */ | |
1938 | TRUE), /* pcrel_offset */ | |
1939 | ||
a6bb11b2 | 1940 | /* LD64: GOT offset G(S) & 0xff8. */ |
f955cccf | 1941 | HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12), /* type */ |
a06ea964 NC |
1942 | 3, /* rightshift */ |
1943 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1944 | 12, /* bitsize */ | |
1945 | FALSE, /* pc_relative */ | |
1946 | 0, /* bitpos */ | |
1947 | complain_overflow_dont, /* complain_on_overflow */ | |
1948 | bfd_elf_generic_reloc, /* special_function */ | |
f955cccf | 1949 | AARCH64_R_STR (TLSDESC_LD64_LO12), /* name */ |
a06ea964 | 1950 | FALSE, /* partial_inplace */ |
a6bb11b2 YZ |
1951 | 0xff8, /* src_mask */ |
1952 | 0xff8, /* dst_mask */ | |
1953 | FALSE), /* pcrel_offset */ | |
1954 | ||
1955 | /* LD32: GOT offset G(S) & 0xffc. */ | |
1956 | HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC), /* type */ | |
1957 | 2, /* rightshift */ | |
1958 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1959 | 12, /* bitsize */ | |
1960 | FALSE, /* pc_relative */ | |
1961 | 0, /* bitpos */ | |
1962 | complain_overflow_dont, /* complain_on_overflow */ | |
1963 | bfd_elf_generic_reloc, /* special_function */ | |
1964 | AARCH64_R_STR (TLSDESC_LD32_LO12_NC), /* name */ | |
1965 | FALSE, /* partial_inplace */ | |
1966 | 0xffc, /* src_mask */ | |
1967 | 0xffc, /* dst_mask */ | |
a06ea964 NC |
1968 | FALSE), /* pcrel_offset */ |
1969 | ||
1970 | /* ADD: GOT offset G(S) & 0xfff. */ | |
f955cccf | 1971 | HOWTO (AARCH64_R (TLSDESC_ADD_LO12), /* type */ |
a06ea964 NC |
1972 | 0, /* rightshift */ |
1973 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1974 | 12, /* bitsize */ | |
1975 | FALSE, /* pc_relative */ | |
1976 | 0, /* bitpos */ | |
f955cccf | 1977 | complain_overflow_dont,/* complain_on_overflow */ |
a06ea964 | 1978 | bfd_elf_generic_reloc, /* special_function */ |
f955cccf | 1979 | AARCH64_R_STR (TLSDESC_ADD_LO12), /* name */ |
a06ea964 NC |
1980 | FALSE, /* partial_inplace */ |
1981 | 0xfff, /* src_mask */ | |
1982 | 0xfff, /* dst_mask */ | |
1983 | FALSE), /* pcrel_offset */ | |
1984 | ||
a6bb11b2 | 1985 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G1), /* type */ |
bb3f9ed8 | 1986 | 16, /* rightshift */ |
a06ea964 NC |
1987 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1988 | 12, /* bitsize */ | |
1989 | FALSE, /* pc_relative */ | |
1990 | 0, /* bitpos */ | |
43a357f9 | 1991 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1992 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1993 | AARCH64_R_STR (TLSDESC_OFF_G1), /* name */ |
a06ea964 NC |
1994 | FALSE, /* partial_inplace */ |
1995 | 0xffff, /* src_mask */ | |
1996 | 0xffff, /* dst_mask */ | |
1997 | FALSE), /* pcrel_offset */ | |
1998 | ||
a6bb11b2 | 1999 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC), /* type */ |
a06ea964 NC |
2000 | 0, /* rightshift */ |
2001 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2002 | 12, /* bitsize */ | |
2003 | FALSE, /* pc_relative */ | |
2004 | 0, /* bitpos */ | |
2005 | complain_overflow_dont, /* complain_on_overflow */ | |
2006 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 2007 | AARCH64_R_STR (TLSDESC_OFF_G0_NC), /* name */ |
a06ea964 NC |
2008 | FALSE, /* partial_inplace */ |
2009 | 0xffff, /* src_mask */ | |
2010 | 0xffff, /* dst_mask */ | |
2011 | FALSE), /* pcrel_offset */ | |
2012 | ||
a6bb11b2 | 2013 | HOWTO64 (AARCH64_R (TLSDESC_LDR), /* type */ |
a06ea964 NC |
2014 | 0, /* rightshift */ |
2015 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2016 | 12, /* bitsize */ | |
2017 | FALSE, /* pc_relative */ | |
2018 | 0, /* bitpos */ | |
2019 | complain_overflow_dont, /* complain_on_overflow */ | |
2020 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 2021 | AARCH64_R_STR (TLSDESC_LDR), /* name */ |
a06ea964 NC |
2022 | FALSE, /* partial_inplace */ |
2023 | 0x0, /* src_mask */ | |
2024 | 0x0, /* dst_mask */ | |
2025 | FALSE), /* pcrel_offset */ | |
2026 | ||
a6bb11b2 | 2027 | HOWTO64 (AARCH64_R (TLSDESC_ADD), /* type */ |
a06ea964 NC |
2028 | 0, /* rightshift */ |
2029 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2030 | 12, /* bitsize */ | |
2031 | FALSE, /* pc_relative */ | |
2032 | 0, /* bitpos */ | |
2033 | complain_overflow_dont, /* complain_on_overflow */ | |
2034 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 2035 | AARCH64_R_STR (TLSDESC_ADD), /* name */ |
a06ea964 NC |
2036 | FALSE, /* partial_inplace */ |
2037 | 0x0, /* src_mask */ | |
2038 | 0x0, /* dst_mask */ | |
2039 | FALSE), /* pcrel_offset */ | |
2040 | ||
a6bb11b2 | 2041 | HOWTO (AARCH64_R (TLSDESC_CALL), /* type */ |
a06ea964 NC |
2042 | 0, /* rightshift */ |
2043 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
7366006f | 2044 | 0, /* bitsize */ |
a06ea964 NC |
2045 | FALSE, /* pc_relative */ |
2046 | 0, /* bitpos */ | |
2047 | complain_overflow_dont, /* complain_on_overflow */ | |
2048 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 2049 | AARCH64_R_STR (TLSDESC_CALL), /* name */ |
a06ea964 NC |
2050 | FALSE, /* partial_inplace */ |
2051 | 0x0, /* src_mask */ | |
2052 | 0x0, /* dst_mask */ | |
2053 | FALSE), /* pcrel_offset */ | |
a6bb11b2 YZ |
2054 | |
2055 | HOWTO (AARCH64_R (COPY), /* type */ | |
2056 | 0, /* rightshift */ | |
2057 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2058 | 64, /* bitsize */ | |
2059 | FALSE, /* pc_relative */ | |
2060 | 0, /* bitpos */ | |
2061 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2062 | bfd_elf_generic_reloc, /* special_function */ | |
2063 | AARCH64_R_STR (COPY), /* name */ | |
2064 | TRUE, /* partial_inplace */ | |
2065 | 0xffffffff, /* src_mask */ | |
2066 | 0xffffffff, /* dst_mask */ | |
2067 | FALSE), /* pcrel_offset */ | |
2068 | ||
2069 | HOWTO (AARCH64_R (GLOB_DAT), /* type */ | |
2070 | 0, /* rightshift */ | |
2071 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2072 | 64, /* bitsize */ | |
2073 | FALSE, /* pc_relative */ | |
2074 | 0, /* bitpos */ | |
2075 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2076 | bfd_elf_generic_reloc, /* special_function */ | |
2077 | AARCH64_R_STR (GLOB_DAT), /* name */ | |
2078 | TRUE, /* partial_inplace */ | |
2079 | 0xffffffff, /* src_mask */ | |
2080 | 0xffffffff, /* dst_mask */ | |
2081 | FALSE), /* pcrel_offset */ | |
2082 | ||
2083 | HOWTO (AARCH64_R (JUMP_SLOT), /* type */ | |
2084 | 0, /* rightshift */ | |
2085 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2086 | 64, /* bitsize */ | |
2087 | FALSE, /* pc_relative */ | |
2088 | 0, /* bitpos */ | |
2089 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2090 | bfd_elf_generic_reloc, /* special_function */ | |
2091 | AARCH64_R_STR (JUMP_SLOT), /* name */ | |
2092 | TRUE, /* partial_inplace */ | |
2093 | 0xffffffff, /* src_mask */ | |
2094 | 0xffffffff, /* dst_mask */ | |
2095 | FALSE), /* pcrel_offset */ | |
2096 | ||
2097 | HOWTO (AARCH64_R (RELATIVE), /* type */ | |
2098 | 0, /* rightshift */ | |
2099 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2100 | 64, /* bitsize */ | |
2101 | FALSE, /* pc_relative */ | |
2102 | 0, /* bitpos */ | |
2103 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2104 | bfd_elf_generic_reloc, /* special_function */ | |
2105 | AARCH64_R_STR (RELATIVE), /* name */ | |
2106 | TRUE, /* partial_inplace */ | |
2107 | ALL_ONES, /* src_mask */ | |
2108 | ALL_ONES, /* dst_mask */ | |
2109 | FALSE), /* pcrel_offset */ | |
2110 | ||
2111 | HOWTO (AARCH64_R (TLS_DTPMOD), /* type */ | |
2112 | 0, /* rightshift */ | |
2113 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2114 | 64, /* bitsize */ | |
2115 | FALSE, /* pc_relative */ | |
2116 | 0, /* bitpos */ | |
2117 | complain_overflow_dont, /* complain_on_overflow */ | |
2118 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
2119 | #if ARCH_SIZE == 64 |
2120 | AARCH64_R_STR (TLS_DTPMOD64), /* name */ | |
2121 | #else | |
a6bb11b2 | 2122 | AARCH64_R_STR (TLS_DTPMOD), /* name */ |
da0781dc | 2123 | #endif |
a6bb11b2 YZ |
2124 | FALSE, /* partial_inplace */ |
2125 | 0, /* src_mask */ | |
2126 | ALL_ONES, /* dst_mask */ | |
2127 | FALSE), /* pc_reloffset */ | |
2128 | ||
2129 | HOWTO (AARCH64_R (TLS_DTPREL), /* type */ | |
2130 | 0, /* rightshift */ | |
2131 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2132 | 64, /* bitsize */ | |
2133 | FALSE, /* pc_relative */ | |
2134 | 0, /* bitpos */ | |
2135 | complain_overflow_dont, /* complain_on_overflow */ | |
2136 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
2137 | #if ARCH_SIZE == 64 |
2138 | AARCH64_R_STR (TLS_DTPREL64), /* name */ | |
2139 | #else | |
a6bb11b2 | 2140 | AARCH64_R_STR (TLS_DTPREL), /* name */ |
da0781dc | 2141 | #endif |
a6bb11b2 YZ |
2142 | FALSE, /* partial_inplace */ |
2143 | 0, /* src_mask */ | |
2144 | ALL_ONES, /* dst_mask */ | |
2145 | FALSE), /* pcrel_offset */ | |
2146 | ||
2147 | HOWTO (AARCH64_R (TLS_TPREL), /* type */ | |
2148 | 0, /* rightshift */ | |
2149 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2150 | 64, /* bitsize */ | |
2151 | FALSE, /* pc_relative */ | |
2152 | 0, /* bitpos */ | |
2153 | complain_overflow_dont, /* complain_on_overflow */ | |
2154 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
2155 | #if ARCH_SIZE == 64 |
2156 | AARCH64_R_STR (TLS_TPREL64), /* name */ | |
2157 | #else | |
a6bb11b2 | 2158 | AARCH64_R_STR (TLS_TPREL), /* name */ |
da0781dc | 2159 | #endif |
a6bb11b2 YZ |
2160 | FALSE, /* partial_inplace */ |
2161 | 0, /* src_mask */ | |
2162 | ALL_ONES, /* dst_mask */ | |
2163 | FALSE), /* pcrel_offset */ | |
2164 | ||
2165 | HOWTO (AARCH64_R (TLSDESC), /* type */ | |
2166 | 0, /* rightshift */ | |
2167 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2168 | 64, /* bitsize */ | |
2169 | FALSE, /* pc_relative */ | |
2170 | 0, /* bitpos */ | |
2171 | complain_overflow_dont, /* complain_on_overflow */ | |
2172 | bfd_elf_generic_reloc, /* special_function */ | |
2173 | AARCH64_R_STR (TLSDESC), /* name */ | |
2174 | FALSE, /* partial_inplace */ | |
2175 | 0, /* src_mask */ | |
2176 | ALL_ONES, /* dst_mask */ | |
2177 | FALSE), /* pcrel_offset */ | |
2178 | ||
2179 | HOWTO (AARCH64_R (IRELATIVE), /* type */ | |
2180 | 0, /* rightshift */ | |
2181 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2182 | 64, /* bitsize */ | |
2183 | FALSE, /* pc_relative */ | |
2184 | 0, /* bitpos */ | |
2185 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2186 | bfd_elf_generic_reloc, /* special_function */ | |
2187 | AARCH64_R_STR (IRELATIVE), /* name */ | |
2188 | FALSE, /* partial_inplace */ | |
2189 | 0, /* src_mask */ | |
2190 | ALL_ONES, /* dst_mask */ | |
2191 | FALSE), /* pcrel_offset */ | |
2192 | ||
2193 | EMPTY_HOWTO (0), | |
a06ea964 NC |
2194 | }; |
2195 | ||
a6bb11b2 YZ |
2196 | static reloc_howto_type elfNN_aarch64_howto_none = |
2197 | HOWTO (R_AARCH64_NONE, /* type */ | |
2198 | 0, /* rightshift */ | |
6346d5ca | 2199 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a6bb11b2 YZ |
2200 | 0, /* bitsize */ |
2201 | FALSE, /* pc_relative */ | |
2202 | 0, /* bitpos */ | |
2203 | complain_overflow_dont,/* complain_on_overflow */ | |
2204 | bfd_elf_generic_reloc, /* special_function */ | |
2205 | "R_AARCH64_NONE", /* name */ | |
2206 | FALSE, /* partial_inplace */ | |
2207 | 0, /* src_mask */ | |
2208 | 0, /* dst_mask */ | |
2209 | FALSE); /* pcrel_offset */ | |
2210 | ||
2211 | /* Given HOWTO, return the bfd internal relocation enumerator. */ | |
2212 | ||
2213 | static bfd_reloc_code_real_type | |
2214 | elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type *howto) | |
2215 | { | |
2216 | const int size | |
2217 | = (int) ARRAY_SIZE (elfNN_aarch64_howto_table); | |
2218 | const ptrdiff_t offset | |
2219 | = howto - elfNN_aarch64_howto_table; | |
2220 | ||
2221 | if (offset > 0 && offset < size - 1) | |
2222 | return BFD_RELOC_AARCH64_RELOC_START + offset; | |
2223 | ||
2224 | if (howto == &elfNN_aarch64_howto_none) | |
2225 | return BFD_RELOC_AARCH64_NONE; | |
2226 | ||
2227 | return BFD_RELOC_AARCH64_RELOC_START; | |
2228 | } | |
2229 | ||
2230 | /* Given R_TYPE, return the bfd internal relocation enumerator. */ | |
2231 | ||
2232 | static bfd_reloc_code_real_type | |
0aa13fee | 2233 | elfNN_aarch64_bfd_reloc_from_type (bfd *abfd, unsigned int r_type) |
a6bb11b2 YZ |
2234 | { |
2235 | static bfd_boolean initialized_p = FALSE; | |
2236 | /* Indexed by R_TYPE, values are offsets in the howto_table. */ | |
2237 | static unsigned int offsets[R_AARCH64_end]; | |
2238 | ||
535b785f | 2239 | if (!initialized_p) |
a6bb11b2 YZ |
2240 | { |
2241 | unsigned int i; | |
2242 | ||
2243 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) | |
2244 | if (elfNN_aarch64_howto_table[i].type != 0) | |
2245 | offsets[elfNN_aarch64_howto_table[i].type] = i; | |
2246 | ||
2247 | initialized_p = TRUE; | |
2248 | } | |
2249 | ||
2250 | if (r_type == R_AARCH64_NONE || r_type == R_AARCH64_NULL) | |
2251 | return BFD_RELOC_AARCH64_NONE; | |
2252 | ||
5860e3f8 NC |
2253 | /* PR 17512: file: b371e70a. */ |
2254 | if (r_type >= R_AARCH64_end) | |
2255 | { | |
0aa13fee AM |
2256 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
2257 | abfd, r_type); | |
5860e3f8 NC |
2258 | bfd_set_error (bfd_error_bad_value); |
2259 | return BFD_RELOC_AARCH64_NONE; | |
2260 | } | |
2261 | ||
a6bb11b2 YZ |
2262 | return BFD_RELOC_AARCH64_RELOC_START + offsets[r_type]; |
2263 | } | |
2264 | ||
2265 | struct elf_aarch64_reloc_map | |
2266 | { | |
2267 | bfd_reloc_code_real_type from; | |
2268 | bfd_reloc_code_real_type to; | |
2269 | }; | |
2270 | ||
2271 | /* Map bfd generic reloc to AArch64-specific reloc. */ | |
2272 | static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map[] = | |
2273 | { | |
2274 | {BFD_RELOC_NONE, BFD_RELOC_AARCH64_NONE}, | |
2275 | ||
2276 | /* Basic data relocations. */ | |
2277 | {BFD_RELOC_CTOR, BFD_RELOC_AARCH64_NN}, | |
2278 | {BFD_RELOC_64, BFD_RELOC_AARCH64_64}, | |
2279 | {BFD_RELOC_32, BFD_RELOC_AARCH64_32}, | |
2280 | {BFD_RELOC_16, BFD_RELOC_AARCH64_16}, | |
2281 | {BFD_RELOC_64_PCREL, BFD_RELOC_AARCH64_64_PCREL}, | |
2282 | {BFD_RELOC_32_PCREL, BFD_RELOC_AARCH64_32_PCREL}, | |
2283 | {BFD_RELOC_16_PCREL, BFD_RELOC_AARCH64_16_PCREL}, | |
2284 | }; | |
2285 | ||
2286 | /* Given the bfd internal relocation enumerator in CODE, return the | |
2287 | corresponding howto entry. */ | |
2288 | ||
2289 | static reloc_howto_type * | |
2290 | elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code) | |
2291 | { | |
2292 | unsigned int i; | |
2293 | ||
2294 | /* Convert bfd generic reloc to AArch64-specific reloc. */ | |
2295 | if (code < BFD_RELOC_AARCH64_RELOC_START | |
2296 | || code > BFD_RELOC_AARCH64_RELOC_END) | |
2297 | for (i = 0; i < ARRAY_SIZE (elf_aarch64_reloc_map); i++) | |
2298 | if (elf_aarch64_reloc_map[i].from == code) | |
2299 | { | |
2300 | code = elf_aarch64_reloc_map[i].to; | |
2301 | break; | |
2302 | } | |
2303 | ||
2304 | if (code > BFD_RELOC_AARCH64_RELOC_START | |
2305 | && code < BFD_RELOC_AARCH64_RELOC_END) | |
2306 | if (elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START].type) | |
2307 | return &elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START]; | |
2308 | ||
54757ed1 AP |
2309 | if (code == BFD_RELOC_AARCH64_NONE) |
2310 | return &elfNN_aarch64_howto_none; | |
2311 | ||
a6bb11b2 YZ |
2312 | return NULL; |
2313 | } | |
2314 | ||
a06ea964 | 2315 | static reloc_howto_type * |
0aa13fee | 2316 | elfNN_aarch64_howto_from_type (bfd *abfd, unsigned int r_type) |
a06ea964 | 2317 | { |
a6bb11b2 YZ |
2318 | bfd_reloc_code_real_type val; |
2319 | reloc_howto_type *howto; | |
2320 | ||
cec5225b YZ |
2321 | #if ARCH_SIZE == 32 |
2322 | if (r_type > 256) | |
2323 | { | |
2324 | bfd_set_error (bfd_error_bad_value); | |
2325 | return NULL; | |
2326 | } | |
2327 | #endif | |
2328 | ||
a6bb11b2 YZ |
2329 | if (r_type == R_AARCH64_NONE) |
2330 | return &elfNN_aarch64_howto_none; | |
a06ea964 | 2331 | |
0aa13fee | 2332 | val = elfNN_aarch64_bfd_reloc_from_type (abfd, r_type); |
a6bb11b2 | 2333 | howto = elfNN_aarch64_howto_from_bfd_reloc (val); |
a06ea964 | 2334 | |
a6bb11b2 YZ |
2335 | if (howto != NULL) |
2336 | return howto; | |
a06ea964 | 2337 | |
a06ea964 NC |
2338 | bfd_set_error (bfd_error_bad_value); |
2339 | return NULL; | |
2340 | } | |
2341 | ||
f3185997 | 2342 | static bfd_boolean |
0aa13fee | 2343 | elfNN_aarch64_info_to_howto (bfd *abfd, arelent *bfd_reloc, |
a06ea964 NC |
2344 | Elf_Internal_Rela *elf_reloc) |
2345 | { | |
2346 | unsigned int r_type; | |
2347 | ||
cec5225b | 2348 | r_type = ELFNN_R_TYPE (elf_reloc->r_info); |
0aa13fee | 2349 | bfd_reloc->howto = elfNN_aarch64_howto_from_type (abfd, r_type); |
f3185997 NC |
2350 | |
2351 | if (bfd_reloc->howto == NULL) | |
2352 | { | |
2353 | /* xgettext:c-format */ | |
2354 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, r_type); | |
2355 | return FALSE; | |
2356 | } | |
2357 | return TRUE; | |
a06ea964 NC |
2358 | } |
2359 | ||
a06ea964 | 2360 | static reloc_howto_type * |
cec5225b | 2361 | elfNN_aarch64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
2362 | bfd_reloc_code_real_type code) |
2363 | { | |
a6bb11b2 | 2364 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (code); |
a06ea964 | 2365 | |
a6bb11b2 YZ |
2366 | if (howto != NULL) |
2367 | return howto; | |
a06ea964 NC |
2368 | |
2369 | bfd_set_error (bfd_error_bad_value); | |
2370 | return NULL; | |
2371 | } | |
2372 | ||
2373 | static reloc_howto_type * | |
cec5225b | 2374 | elfNN_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
2375 | const char *r_name) |
2376 | { | |
2377 | unsigned int i; | |
2378 | ||
a6bb11b2 YZ |
2379 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) |
2380 | if (elfNN_aarch64_howto_table[i].name != NULL | |
2381 | && strcasecmp (elfNN_aarch64_howto_table[i].name, r_name) == 0) | |
2382 | return &elfNN_aarch64_howto_table[i]; | |
a06ea964 NC |
2383 | |
2384 | return NULL; | |
2385 | } | |
2386 | ||
07d6d2b8 AM |
2387 | #define TARGET_LITTLE_SYM aarch64_elfNN_le_vec |
2388 | #define TARGET_LITTLE_NAME "elfNN-littleaarch64" | |
2389 | #define TARGET_BIG_SYM aarch64_elfNN_be_vec | |
2390 | #define TARGET_BIG_NAME "elfNN-bigaarch64" | |
a06ea964 | 2391 | |
a06ea964 NC |
2392 | /* The linker script knows the section names for placement. |
2393 | The entry_names are used to do simple name mangling on the stubs. | |
2394 | Given a function name, and its type, the stub can be found. The | |
2395 | name can be changed. The only requirement is the %s be present. */ | |
2396 | #define STUB_ENTRY_NAME "__%s_veneer" | |
2397 | ||
2398 | /* The name of the dynamic interpreter. This is put in the .interp | |
2399 | section. */ | |
2400 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
2401 | ||
2402 | #define AARCH64_MAX_FWD_BRANCH_OFFSET \ | |
2403 | (((1 << 25) - 1) << 2) | |
2404 | #define AARCH64_MAX_BWD_BRANCH_OFFSET \ | |
2405 | (-((1 << 25) << 2)) | |
2406 | ||
2407 | #define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1) | |
2408 | #define AARCH64_MIN_ADRP_IMM (-(1 << 20)) | |
2409 | ||
2410 | static int | |
2411 | aarch64_valid_for_adrp_p (bfd_vma value, bfd_vma place) | |
2412 | { | |
2413 | bfd_signed_vma offset = (bfd_signed_vma) (PG (value) - PG (place)) >> 12; | |
2414 | return offset <= AARCH64_MAX_ADRP_IMM && offset >= AARCH64_MIN_ADRP_IMM; | |
2415 | } | |
2416 | ||
2417 | static int | |
2418 | aarch64_valid_branch_p (bfd_vma value, bfd_vma place) | |
2419 | { | |
2420 | bfd_signed_vma offset = (bfd_signed_vma) (value - place); | |
2421 | return (offset <= AARCH64_MAX_FWD_BRANCH_OFFSET | |
2422 | && offset >= AARCH64_MAX_BWD_BRANCH_OFFSET); | |
2423 | } | |
2424 | ||
2425 | static const uint32_t aarch64_adrp_branch_stub [] = | |
2426 | { | |
2427 | 0x90000010, /* adrp ip0, X */ | |
2428 | /* R_AARCH64_ADR_HI21_PCREL(X) */ | |
2429 | 0x91000210, /* add ip0, ip0, :lo12:X */ | |
2430 | /* R_AARCH64_ADD_ABS_LO12_NC(X) */ | |
2431 | 0xd61f0200, /* br ip0 */ | |
2432 | }; | |
2433 | ||
2434 | static const uint32_t aarch64_long_branch_stub[] = | |
2435 | { | |
cec5225b | 2436 | #if ARCH_SIZE == 64 |
a06ea964 | 2437 | 0x58000090, /* ldr ip0, 1f */ |
cec5225b YZ |
2438 | #else |
2439 | 0x18000090, /* ldr wip0, 1f */ | |
2440 | #endif | |
a06ea964 NC |
2441 | 0x10000011, /* adr ip1, #0 */ |
2442 | 0x8b110210, /* add ip0, ip0, ip1 */ | |
2443 | 0xd61f0200, /* br ip0 */ | |
cec5225b YZ |
2444 | 0x00000000, /* 1: .xword or .word |
2445 | R_AARCH64_PRELNN(X) + 12 | |
a06ea964 NC |
2446 | */ |
2447 | 0x00000000, | |
2448 | }; | |
2449 | ||
68fcca92 JW |
2450 | static const uint32_t aarch64_erratum_835769_stub[] = |
2451 | { | |
2452 | 0x00000000, /* Placeholder for multiply accumulate. */ | |
2453 | 0x14000000, /* b <label> */ | |
2454 | }; | |
2455 | ||
4106101c MS |
2456 | static const uint32_t aarch64_erratum_843419_stub[] = |
2457 | { | |
2458 | 0x00000000, /* Placeholder for LDR instruction. */ | |
2459 | 0x14000000, /* b <label> */ | |
2460 | }; | |
2461 | ||
a06ea964 NC |
2462 | /* Section name for stubs is the associated section name plus this |
2463 | string. */ | |
2464 | #define STUB_SUFFIX ".stub" | |
2465 | ||
cec5225b | 2466 | enum elf_aarch64_stub_type |
a06ea964 NC |
2467 | { |
2468 | aarch64_stub_none, | |
2469 | aarch64_stub_adrp_branch, | |
2470 | aarch64_stub_long_branch, | |
68fcca92 | 2471 | aarch64_stub_erratum_835769_veneer, |
4106101c | 2472 | aarch64_stub_erratum_843419_veneer, |
a06ea964 NC |
2473 | }; |
2474 | ||
cec5225b | 2475 | struct elf_aarch64_stub_hash_entry |
a06ea964 NC |
2476 | { |
2477 | /* Base hash table entry structure. */ | |
2478 | struct bfd_hash_entry root; | |
2479 | ||
2480 | /* The stub section. */ | |
2481 | asection *stub_sec; | |
2482 | ||
2483 | /* Offset within stub_sec of the beginning of this stub. */ | |
2484 | bfd_vma stub_offset; | |
2485 | ||
2486 | /* Given the symbol's value and its section we can determine its final | |
2487 | value when building the stubs (so the stub knows where to jump). */ | |
2488 | bfd_vma target_value; | |
2489 | asection *target_section; | |
2490 | ||
cec5225b | 2491 | enum elf_aarch64_stub_type stub_type; |
a06ea964 NC |
2492 | |
2493 | /* The symbol table entry, if any, that this was derived from. */ | |
cec5225b | 2494 | struct elf_aarch64_link_hash_entry *h; |
a06ea964 NC |
2495 | |
2496 | /* Destination symbol type */ | |
2497 | unsigned char st_type; | |
2498 | ||
2499 | /* Where this stub is being called from, or, in the case of combined | |
2500 | stub sections, the first input section in the group. */ | |
2501 | asection *id_sec; | |
2502 | ||
2503 | /* The name for the local symbol at the start of this stub. The | |
2504 | stub name in the hash table has to be unique; this does not, so | |
2505 | it can be friendlier. */ | |
2506 | char *output_name; | |
68fcca92 JW |
2507 | |
2508 | /* The instruction which caused this stub to be generated (only valid for | |
2509 | erratum 835769 workaround stubs at present). */ | |
2510 | uint32_t veneered_insn; | |
4106101c MS |
2511 | |
2512 | /* In an erratum 843419 workaround stub, the ADRP instruction offset. */ | |
2513 | bfd_vma adrp_offset; | |
a06ea964 NC |
2514 | }; |
2515 | ||
2516 | /* Used to build a map of a section. This is required for mixed-endian | |
2517 | code/data. */ | |
2518 | ||
cec5225b | 2519 | typedef struct elf_elf_section_map |
a06ea964 NC |
2520 | { |
2521 | bfd_vma vma; | |
2522 | char type; | |
2523 | } | |
cec5225b | 2524 | elf_aarch64_section_map; |
a06ea964 NC |
2525 | |
2526 | ||
2527 | typedef struct _aarch64_elf_section_data | |
2528 | { | |
2529 | struct bfd_elf_section_data elf; | |
2530 | unsigned int mapcount; | |
2531 | unsigned int mapsize; | |
cec5225b | 2532 | elf_aarch64_section_map *map; |
a06ea964 NC |
2533 | } |
2534 | _aarch64_elf_section_data; | |
2535 | ||
cec5225b | 2536 | #define elf_aarch64_section_data(sec) \ |
a06ea964 NC |
2537 | ((_aarch64_elf_section_data *) elf_section_data (sec)) |
2538 | ||
4e8516b2 AP |
2539 | /* The size of the thread control block which is defined to be two pointers. */ |
2540 | #define TCB_SIZE (ARCH_SIZE/8)*2 | |
a06ea964 NC |
2541 | |
2542 | struct elf_aarch64_local_symbol | |
2543 | { | |
2544 | unsigned int got_type; | |
2545 | bfd_signed_vma got_refcount; | |
2546 | bfd_vma got_offset; | |
2547 | ||
2548 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The | |
2549 | offset is from the end of the jump table and reserved entries | |
2550 | within the PLTGOT. | |
2551 | ||
2552 | The magic value (bfd_vma) -1 indicates that an offset has not be | |
2553 | allocated. */ | |
2554 | bfd_vma tlsdesc_got_jump_table_offset; | |
2555 | }; | |
2556 | ||
2557 | struct elf_aarch64_obj_tdata | |
2558 | { | |
2559 | struct elf_obj_tdata root; | |
2560 | ||
2561 | /* local symbol descriptors */ | |
2562 | struct elf_aarch64_local_symbol *locals; | |
2563 | ||
2564 | /* Zero to warn when linking objects with incompatible enum sizes. */ | |
2565 | int no_enum_size_warning; | |
2566 | ||
2567 | /* Zero to warn when linking objects with incompatible wchar_t sizes. */ | |
2568 | int no_wchar_size_warning; | |
cd702818 SD |
2569 | |
2570 | /* All GNU_PROPERTY_AARCH64_FEATURE_1_AND properties. */ | |
2571 | uint32_t gnu_and_prop; | |
37c18eed SD |
2572 | |
2573 | /* Zero to warn when linking objects with incompatible | |
2574 | GNU_PROPERTY_AARCH64_FEATURE_1_BTI. */ | |
2575 | int no_bti_warn; | |
2576 | ||
2577 | /* PLT type based on security. */ | |
2578 | aarch64_plt_type plt_type; | |
a06ea964 NC |
2579 | }; |
2580 | ||
2581 | #define elf_aarch64_tdata(bfd) \ | |
2582 | ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any) | |
2583 | ||
cec5225b | 2584 | #define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals) |
a06ea964 NC |
2585 | |
2586 | #define is_aarch64_elf(bfd) \ | |
2587 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
2588 | && elf_tdata (bfd) != NULL \ | |
2589 | && elf_object_id (bfd) == AARCH64_ELF_DATA) | |
2590 | ||
2591 | static bfd_boolean | |
cec5225b | 2592 | elfNN_aarch64_mkobject (bfd *abfd) |
a06ea964 NC |
2593 | { |
2594 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_aarch64_obj_tdata), | |
2595 | AARCH64_ELF_DATA); | |
2596 | } | |
2597 | ||
cec5225b YZ |
2598 | #define elf_aarch64_hash_entry(ent) \ |
2599 | ((struct elf_aarch64_link_hash_entry *)(ent)) | |
a06ea964 NC |
2600 | |
2601 | #define GOT_UNKNOWN 0 | |
2602 | #define GOT_NORMAL 1 | |
2603 | #define GOT_TLS_GD 2 | |
2604 | #define GOT_TLS_IE 4 | |
2605 | #define GOT_TLSDESC_GD 8 | |
2606 | ||
2607 | #define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD)) | |
2608 | ||
2609 | /* AArch64 ELF linker hash entry. */ | |
cec5225b | 2610 | struct elf_aarch64_link_hash_entry |
a06ea964 NC |
2611 | { |
2612 | struct elf_link_hash_entry root; | |
2613 | ||
2614 | /* Track dynamic relocs copied for this symbol. */ | |
2615 | struct elf_dyn_relocs *dyn_relocs; | |
2616 | ||
a06ea964 NC |
2617 | /* Since PLT entries have variable size, we need to record the |
2618 | index into .got.plt instead of recomputing it from the PLT | |
2619 | offset. */ | |
2620 | bfd_signed_vma plt_got_offset; | |
2621 | ||
2622 | /* Bit mask representing the type of GOT entry(s) if any required by | |
2623 | this symbol. */ | |
2624 | unsigned int got_type; | |
2625 | ||
2626 | /* A pointer to the most recently used stub hash entry against this | |
2627 | symbol. */ | |
cec5225b | 2628 | struct elf_aarch64_stub_hash_entry *stub_cache; |
a06ea964 NC |
2629 | |
2630 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset | |
2631 | is from the end of the jump table and reserved entries within the PLTGOT. | |
2632 | ||
2633 | The magic value (bfd_vma) -1 indicates that an offset has not | |
2634 | be allocated. */ | |
2635 | bfd_vma tlsdesc_got_jump_table_offset; | |
2636 | }; | |
2637 | ||
2638 | static unsigned int | |
cec5225b | 2639 | elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry *h, |
a06ea964 NC |
2640 | bfd *abfd, |
2641 | unsigned long r_symndx) | |
2642 | { | |
2643 | if (h) | |
cec5225b | 2644 | return elf_aarch64_hash_entry (h)->got_type; |
a06ea964 | 2645 | |
cec5225b | 2646 | if (! elf_aarch64_locals (abfd)) |
a06ea964 NC |
2647 | return GOT_UNKNOWN; |
2648 | ||
cec5225b | 2649 | return elf_aarch64_locals (abfd)[r_symndx].got_type; |
a06ea964 NC |
2650 | } |
2651 | ||
a06ea964 | 2652 | /* Get the AArch64 elf linker hash table from a link_info structure. */ |
cec5225b YZ |
2653 | #define elf_aarch64_hash_table(info) \ |
2654 | ((struct elf_aarch64_link_hash_table *) ((info)->hash)) | |
a06ea964 NC |
2655 | |
2656 | #define aarch64_stub_hash_lookup(table, string, create, copy) \ | |
cec5225b | 2657 | ((struct elf_aarch64_stub_hash_entry *) \ |
a06ea964 NC |
2658 | bfd_hash_lookup ((table), (string), (create), (copy))) |
2659 | ||
2660 | /* AArch64 ELF linker hash table. */ | |
cec5225b | 2661 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
2662 | { |
2663 | /* The main hash table. */ | |
2664 | struct elf_link_hash_table root; | |
2665 | ||
2666 | /* Nonzero to force PIC branch veneers. */ | |
2667 | int pic_veneer; | |
2668 | ||
68fcca92 JW |
2669 | /* Fix erratum 835769. */ |
2670 | int fix_erratum_835769; | |
2671 | ||
4106101c MS |
2672 | /* Fix erratum 843419. */ |
2673 | int fix_erratum_843419; | |
2674 | ||
2675 | /* Enable ADRP->ADR rewrite for erratum 843419 workaround. */ | |
2676 | int fix_erratum_843419_adr; | |
2677 | ||
1f56df9d JW |
2678 | /* Don't apply link-time values for dynamic relocations. */ |
2679 | int no_apply_dynamic_relocs; | |
2680 | ||
a06ea964 NC |
2681 | /* The number of bytes in the initial entry in the PLT. */ |
2682 | bfd_size_type plt_header_size; | |
2683 | ||
37c18eed SD |
2684 | /* The bytes of the initial PLT entry. */ |
2685 | const bfd_byte *plt0_entry; | |
2686 | ||
2687 | /* The number of bytes in the subsequent PLT entries. */ | |
a06ea964 NC |
2688 | bfd_size_type plt_entry_size; |
2689 | ||
37c18eed SD |
2690 | /* The bytes of the subsequent PLT entry. */ |
2691 | const bfd_byte *plt_entry; | |
2692 | ||
a06ea964 NC |
2693 | /* Small local sym cache. */ |
2694 | struct sym_cache sym_cache; | |
2695 | ||
2696 | /* For convenience in allocate_dynrelocs. */ | |
2697 | bfd *obfd; | |
2698 | ||
2699 | /* The amount of space used by the reserved portion of the sgotplt | |
2700 | section, plus whatever space is used by the jump slots. */ | |
2701 | bfd_vma sgotplt_jump_table_size; | |
2702 | ||
2703 | /* The stub hash table. */ | |
2704 | struct bfd_hash_table stub_hash_table; | |
2705 | ||
2706 | /* Linker stub bfd. */ | |
2707 | bfd *stub_bfd; | |
2708 | ||
2709 | /* Linker call-backs. */ | |
2710 | asection *(*add_stub_section) (const char *, asection *); | |
2711 | void (*layout_sections_again) (void); | |
2712 | ||
2713 | /* Array to keep track of which stub sections have been created, and | |
2714 | information on stub grouping. */ | |
2715 | struct map_stub | |
2716 | { | |
2717 | /* This is the section to which stubs in the group will be | |
2718 | attached. */ | |
2719 | asection *link_sec; | |
2720 | /* The stub section. */ | |
2721 | asection *stub_sec; | |
2722 | } *stub_group; | |
2723 | ||
cec5225b | 2724 | /* Assorted information used by elfNN_aarch64_size_stubs. */ |
a06ea964 | 2725 | unsigned int bfd_count; |
7292b3ac | 2726 | unsigned int top_index; |
a06ea964 NC |
2727 | asection **input_list; |
2728 | ||
2729 | /* The offset into splt of the PLT entry for the TLS descriptor | |
2730 | resolver. Special values are 0, if not necessary (or not found | |
2731 | to be necessary yet), and -1 if needed but not determined | |
2732 | yet. */ | |
2733 | bfd_vma tlsdesc_plt; | |
2734 | ||
37c18eed SD |
2735 | /* The number of bytes in the PLT enty for the TLS descriptor. */ |
2736 | bfd_size_type tlsdesc_plt_entry_size; | |
2737 | ||
a06ea964 NC |
2738 | /* The GOT offset for the lazy trampoline. Communicated to the |
2739 | loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1 | |
2740 | indicates an offset is not allocated. */ | |
2741 | bfd_vma dt_tlsdesc_got; | |
1419bbe5 WN |
2742 | |
2743 | /* Used by local STT_GNU_IFUNC symbols. */ | |
2744 | htab_t loc_hash_table; | |
2745 | void * loc_hash_memory; | |
a06ea964 NC |
2746 | }; |
2747 | ||
a06ea964 NC |
2748 | /* Create an entry in an AArch64 ELF linker hash table. */ |
2749 | ||
2750 | static struct bfd_hash_entry * | |
cec5225b | 2751 | elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry, |
a06ea964 NC |
2752 | struct bfd_hash_table *table, |
2753 | const char *string) | |
2754 | { | |
cec5225b YZ |
2755 | struct elf_aarch64_link_hash_entry *ret = |
2756 | (struct elf_aarch64_link_hash_entry *) entry; | |
a06ea964 NC |
2757 | |
2758 | /* Allocate the structure if it has not already been allocated by a | |
2759 | subclass. */ | |
2760 | if (ret == NULL) | |
2761 | ret = bfd_hash_allocate (table, | |
cec5225b | 2762 | sizeof (struct elf_aarch64_link_hash_entry)); |
a06ea964 NC |
2763 | if (ret == NULL) |
2764 | return (struct bfd_hash_entry *) ret; | |
2765 | ||
2766 | /* Call the allocation method of the superclass. */ | |
cec5225b | 2767 | ret = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
2768 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
2769 | table, string)); | |
2770 | if (ret != NULL) | |
2771 | { | |
2772 | ret->dyn_relocs = NULL; | |
a06ea964 NC |
2773 | ret->got_type = GOT_UNKNOWN; |
2774 | ret->plt_got_offset = (bfd_vma) - 1; | |
2775 | ret->stub_cache = NULL; | |
2776 | ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
2777 | } | |
2778 | ||
2779 | return (struct bfd_hash_entry *) ret; | |
2780 | } | |
2781 | ||
2782 | /* Initialize an entry in the stub hash table. */ | |
2783 | ||
2784 | static struct bfd_hash_entry * | |
2785 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
2786 | struct bfd_hash_table *table, const char *string) | |
2787 | { | |
2788 | /* Allocate the structure if it has not already been allocated by a | |
2789 | subclass. */ | |
2790 | if (entry == NULL) | |
2791 | { | |
2792 | entry = bfd_hash_allocate (table, | |
2793 | sizeof (struct | |
cec5225b | 2794 | elf_aarch64_stub_hash_entry)); |
a06ea964 NC |
2795 | if (entry == NULL) |
2796 | return entry; | |
2797 | } | |
2798 | ||
2799 | /* Call the allocation method of the superclass. */ | |
2800 | entry = bfd_hash_newfunc (entry, table, string); | |
2801 | if (entry != NULL) | |
2802 | { | |
cec5225b | 2803 | struct elf_aarch64_stub_hash_entry *eh; |
a06ea964 NC |
2804 | |
2805 | /* Initialize the local fields. */ | |
cec5225b | 2806 | eh = (struct elf_aarch64_stub_hash_entry *) entry; |
4106101c | 2807 | eh->adrp_offset = 0; |
a06ea964 NC |
2808 | eh->stub_sec = NULL; |
2809 | eh->stub_offset = 0; | |
2810 | eh->target_value = 0; | |
2811 | eh->target_section = NULL; | |
2812 | eh->stub_type = aarch64_stub_none; | |
2813 | eh->h = NULL; | |
2814 | eh->id_sec = NULL; | |
2815 | } | |
2816 | ||
2817 | return entry; | |
2818 | } | |
2819 | ||
1419bbe5 WN |
2820 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry |
2821 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
2822 | as global symbol. We reuse indx and dynstr_index for local symbol | |
2823 | hash since they aren't used by global symbols in this backend. */ | |
2824 | ||
2825 | static hashval_t | |
2826 | elfNN_aarch64_local_htab_hash (const void *ptr) | |
2827 | { | |
2828 | struct elf_link_hash_entry *h | |
2829 | = (struct elf_link_hash_entry *) ptr; | |
2830 | return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); | |
2831 | } | |
2832 | ||
2833 | /* Compare local hash entries. */ | |
2834 | ||
2835 | static int | |
2836 | elfNN_aarch64_local_htab_eq (const void *ptr1, const void *ptr2) | |
2837 | { | |
2838 | struct elf_link_hash_entry *h1 | |
2839 | = (struct elf_link_hash_entry *) ptr1; | |
2840 | struct elf_link_hash_entry *h2 | |
2841 | = (struct elf_link_hash_entry *) ptr2; | |
2842 | ||
2843 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
2844 | } | |
2845 | ||
2846 | /* Find and/or create a hash entry for local symbol. */ | |
2847 | ||
2848 | static struct elf_link_hash_entry * | |
2849 | elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table *htab, | |
2850 | bfd *abfd, const Elf_Internal_Rela *rel, | |
2851 | bfd_boolean create) | |
2852 | { | |
2853 | struct elf_aarch64_link_hash_entry e, *ret; | |
2854 | asection *sec = abfd->sections; | |
2855 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, | |
2856 | ELFNN_R_SYM (rel->r_info)); | |
2857 | void **slot; | |
2858 | ||
2859 | e.root.indx = sec->id; | |
2860 | e.root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2861 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, | |
2862 | create ? INSERT : NO_INSERT); | |
2863 | ||
2864 | if (!slot) | |
2865 | return NULL; | |
2866 | ||
2867 | if (*slot) | |
2868 | { | |
2869 | ret = (struct elf_aarch64_link_hash_entry *) *slot; | |
2870 | return &ret->root; | |
2871 | } | |
2872 | ||
2873 | ret = (struct elf_aarch64_link_hash_entry *) | |
2874 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, | |
2875 | sizeof (struct elf_aarch64_link_hash_entry)); | |
2876 | if (ret) | |
2877 | { | |
2878 | memset (ret, 0, sizeof (*ret)); | |
2879 | ret->root.indx = sec->id; | |
2880 | ret->root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2881 | ret->root.dynindx = -1; | |
2882 | *slot = ret; | |
2883 | } | |
2884 | return &ret->root; | |
2885 | } | |
a06ea964 NC |
2886 | |
2887 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
2888 | ||
2889 | static void | |
cec5225b | 2890 | elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info, |
a06ea964 NC |
2891 | struct elf_link_hash_entry *dir, |
2892 | struct elf_link_hash_entry *ind) | |
2893 | { | |
cec5225b | 2894 | struct elf_aarch64_link_hash_entry *edir, *eind; |
a06ea964 | 2895 | |
cec5225b YZ |
2896 | edir = (struct elf_aarch64_link_hash_entry *) dir; |
2897 | eind = (struct elf_aarch64_link_hash_entry *) ind; | |
a06ea964 NC |
2898 | |
2899 | if (eind->dyn_relocs != NULL) | |
2900 | { | |
2901 | if (edir->dyn_relocs != NULL) | |
2902 | { | |
2903 | struct elf_dyn_relocs **pp; | |
2904 | struct elf_dyn_relocs *p; | |
2905 | ||
2906 | /* Add reloc counts against the indirect sym to the direct sym | |
2907 | list. Merge any entries against the same section. */ | |
2908 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) | |
2909 | { | |
2910 | struct elf_dyn_relocs *q; | |
2911 | ||
2912 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
2913 | if (q->sec == p->sec) | |
2914 | { | |
2915 | q->pc_count += p->pc_count; | |
2916 | q->count += p->count; | |
2917 | *pp = p->next; | |
2918 | break; | |
2919 | } | |
2920 | if (q == NULL) | |
2921 | pp = &p->next; | |
2922 | } | |
2923 | *pp = edir->dyn_relocs; | |
2924 | } | |
2925 | ||
2926 | edir->dyn_relocs = eind->dyn_relocs; | |
2927 | eind->dyn_relocs = NULL; | |
2928 | } | |
2929 | ||
a06ea964 NC |
2930 | if (ind->root.type == bfd_link_hash_indirect) |
2931 | { | |
2932 | /* Copy over PLT info. */ | |
2933 | if (dir->got.refcount <= 0) | |
2934 | { | |
2935 | edir->got_type = eind->got_type; | |
2936 | eind->got_type = GOT_UNKNOWN; | |
2937 | } | |
2938 | } | |
2939 | ||
2940 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
2941 | } | |
2942 | ||
68faa637 AM |
2943 | /* Destroy an AArch64 elf linker hash table. */ |
2944 | ||
2945 | static void | |
d495ab0d | 2946 | elfNN_aarch64_link_hash_table_free (bfd *obfd) |
68faa637 AM |
2947 | { |
2948 | struct elf_aarch64_link_hash_table *ret | |
d495ab0d | 2949 | = (struct elf_aarch64_link_hash_table *) obfd->link.hash; |
68faa637 AM |
2950 | |
2951 | if (ret->loc_hash_table) | |
2952 | htab_delete (ret->loc_hash_table); | |
2953 | if (ret->loc_hash_memory) | |
2954 | objalloc_free ((struct objalloc *) ret->loc_hash_memory); | |
2955 | ||
2956 | bfd_hash_table_free (&ret->stub_hash_table); | |
d495ab0d | 2957 | _bfd_elf_link_hash_table_free (obfd); |
68faa637 AM |
2958 | } |
2959 | ||
a06ea964 NC |
2960 | /* Create an AArch64 elf linker hash table. */ |
2961 | ||
2962 | static struct bfd_link_hash_table * | |
cec5225b | 2963 | elfNN_aarch64_link_hash_table_create (bfd *abfd) |
a06ea964 | 2964 | { |
cec5225b YZ |
2965 | struct elf_aarch64_link_hash_table *ret; |
2966 | bfd_size_type amt = sizeof (struct elf_aarch64_link_hash_table); | |
a06ea964 | 2967 | |
7bf52ea2 | 2968 | ret = bfd_zmalloc (amt); |
a06ea964 NC |
2969 | if (ret == NULL) |
2970 | return NULL; | |
2971 | ||
2972 | if (!_bfd_elf_link_hash_table_init | |
cec5225b YZ |
2973 | (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc, |
2974 | sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA)) | |
a06ea964 NC |
2975 | { |
2976 | free (ret); | |
2977 | return NULL; | |
2978 | } | |
2979 | ||
a06ea964 | 2980 | ret->plt_header_size = PLT_ENTRY_SIZE; |
37c18eed | 2981 | ret->plt0_entry = elfNN_aarch64_small_plt0_entry; |
a06ea964 | 2982 | ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE; |
37c18eed SD |
2983 | ret->plt_entry = elfNN_aarch64_small_plt_entry; |
2984 | ret->tlsdesc_plt_entry_size = PLT_TLSDESC_ENTRY_SIZE; | |
a06ea964 | 2985 | ret->obfd = abfd; |
a06ea964 NC |
2986 | ret->dt_tlsdesc_got = (bfd_vma) - 1; |
2987 | ||
2988 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc, | |
cec5225b | 2989 | sizeof (struct elf_aarch64_stub_hash_entry))) |
a06ea964 | 2990 | { |
d495ab0d | 2991 | _bfd_elf_link_hash_table_free (abfd); |
a06ea964 NC |
2992 | return NULL; |
2993 | } | |
2994 | ||
1419bbe5 WN |
2995 | ret->loc_hash_table = htab_try_create (1024, |
2996 | elfNN_aarch64_local_htab_hash, | |
2997 | elfNN_aarch64_local_htab_eq, | |
2998 | NULL); | |
2999 | ret->loc_hash_memory = objalloc_create (); | |
3000 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
3001 | { | |
d495ab0d | 3002 | elfNN_aarch64_link_hash_table_free (abfd); |
1419bbe5 WN |
3003 | return NULL; |
3004 | } | |
d495ab0d | 3005 | ret->root.root.hash_table_free = elfNN_aarch64_link_hash_table_free; |
1419bbe5 | 3006 | |
a06ea964 NC |
3007 | return &ret->root.root; |
3008 | } | |
3009 | ||
1d75a8e2 NC |
3010 | /* Perform relocation R_TYPE. Returns TRUE upon success, FALSE otherwise. */ |
3011 | ||
a06ea964 NC |
3012 | static bfd_boolean |
3013 | aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section, | |
3014 | bfd_vma offset, bfd_vma value) | |
3015 | { | |
3016 | reloc_howto_type *howto; | |
3017 | bfd_vma place; | |
3018 | ||
0aa13fee | 3019 | howto = elfNN_aarch64_howto_from_type (input_bfd, r_type); |
a06ea964 NC |
3020 | place = (input_section->output_section->vma + input_section->output_offset |
3021 | + offset); | |
caed7120 | 3022 | |
0aa13fee | 3023 | r_type = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
caed7120 YZ |
3024 | value = _bfd_aarch64_elf_resolve_relocation (r_type, place, value, 0, FALSE); |
3025 | return _bfd_aarch64_elf_put_addend (input_bfd, | |
3026 | input_section->contents + offset, r_type, | |
1d75a8e2 | 3027 | howto, value) == bfd_reloc_ok; |
a06ea964 NC |
3028 | } |
3029 | ||
cec5225b | 3030 | static enum elf_aarch64_stub_type |
a06ea964 NC |
3031 | aarch64_select_branch_stub (bfd_vma value, bfd_vma place) |
3032 | { | |
3033 | if (aarch64_valid_for_adrp_p (value, place)) | |
3034 | return aarch64_stub_adrp_branch; | |
3035 | return aarch64_stub_long_branch; | |
3036 | } | |
3037 | ||
3038 | /* Determine the type of stub needed, if any, for a call. */ | |
3039 | ||
cec5225b | 3040 | static enum elf_aarch64_stub_type |
9a228467 | 3041 | aarch64_type_of_stub (asection *input_sec, |
a06ea964 | 3042 | const Elf_Internal_Rela *rel, |
f678ded7 | 3043 | asection *sym_sec, |
a06ea964 | 3044 | unsigned char st_type, |
a06ea964 NC |
3045 | bfd_vma destination) |
3046 | { | |
3047 | bfd_vma location; | |
3048 | bfd_signed_vma branch_offset; | |
3049 | unsigned int r_type; | |
cec5225b | 3050 | enum elf_aarch64_stub_type stub_type = aarch64_stub_none; |
a06ea964 | 3051 | |
f678ded7 | 3052 | if (st_type != STT_FUNC |
2f340668 | 3053 | && (sym_sec == input_sec)) |
a06ea964 NC |
3054 | return stub_type; |
3055 | ||
a06ea964 NC |
3056 | /* Determine where the call point is. */ |
3057 | location = (input_sec->output_offset | |
3058 | + input_sec->output_section->vma + rel->r_offset); | |
3059 | ||
3060 | branch_offset = (bfd_signed_vma) (destination - location); | |
3061 | ||
cec5225b | 3062 | r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
3063 | |
3064 | /* We don't want to redirect any old unconditional jump in this way, | |
3065 | only one which is being used for a sibcall, where it is | |
3066 | acceptable for the IP0 and IP1 registers to be clobbered. */ | |
a6bb11b2 | 3067 | if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26)) |
a06ea964 NC |
3068 | && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET |
3069 | || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET)) | |
3070 | { | |
3071 | stub_type = aarch64_stub_long_branch; | |
3072 | } | |
3073 | ||
3074 | return stub_type; | |
3075 | } | |
3076 | ||
3077 | /* Build a name for an entry in the stub hash table. */ | |
3078 | ||
3079 | static char * | |
cec5225b | 3080 | elfNN_aarch64_stub_name (const asection *input_section, |
a06ea964 | 3081 | const asection *sym_sec, |
cec5225b | 3082 | const struct elf_aarch64_link_hash_entry *hash, |
a06ea964 NC |
3083 | const Elf_Internal_Rela *rel) |
3084 | { | |
3085 | char *stub_name; | |
3086 | bfd_size_type len; | |
3087 | ||
3088 | if (hash) | |
3089 | { | |
3090 | len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1; | |
3091 | stub_name = bfd_malloc (len); | |
3092 | if (stub_name != NULL) | |
3093 | snprintf (stub_name, len, "%08x_%s+%" BFD_VMA_FMT "x", | |
3094 | (unsigned int) input_section->id, | |
3095 | hash->root.root.root.string, | |
3096 | rel->r_addend); | |
3097 | } | |
3098 | else | |
3099 | { | |
3100 | len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1; | |
3101 | stub_name = bfd_malloc (len); | |
3102 | if (stub_name != NULL) | |
3103 | snprintf (stub_name, len, "%08x_%x:%x+%" BFD_VMA_FMT "x", | |
3104 | (unsigned int) input_section->id, | |
3105 | (unsigned int) sym_sec->id, | |
cec5225b | 3106 | (unsigned int) ELFNN_R_SYM (rel->r_info), |
a06ea964 NC |
3107 | rel->r_addend); |
3108 | } | |
3109 | ||
3110 | return stub_name; | |
3111 | } | |
3112 | ||
7f784814 JW |
3113 | /* Return TRUE if symbol H should be hashed in the `.gnu.hash' section. For |
3114 | executable PLT slots where the executable never takes the address of those | |
3115 | functions, the function symbols are not added to the hash table. */ | |
3116 | ||
3117 | static bfd_boolean | |
3118 | elf_aarch64_hash_symbol (struct elf_link_hash_entry *h) | |
3119 | { | |
3120 | if (h->plt.offset != (bfd_vma) -1 | |
3121 | && !h->def_regular | |
3122 | && !h->pointer_equality_needed) | |
3123 | return FALSE; | |
3124 | ||
3125 | return _bfd_elf_hash_symbol (h); | |
3126 | } | |
3127 | ||
3128 | ||
a06ea964 NC |
3129 | /* Look up an entry in the stub hash. Stub entries are cached because |
3130 | creating the stub name takes a bit of time. */ | |
3131 | ||
cec5225b YZ |
3132 | static struct elf_aarch64_stub_hash_entry * |
3133 | elfNN_aarch64_get_stub_entry (const asection *input_section, | |
a06ea964 NC |
3134 | const asection *sym_sec, |
3135 | struct elf_link_hash_entry *hash, | |
3136 | const Elf_Internal_Rela *rel, | |
cec5225b | 3137 | struct elf_aarch64_link_hash_table *htab) |
a06ea964 | 3138 | { |
cec5225b YZ |
3139 | struct elf_aarch64_stub_hash_entry *stub_entry; |
3140 | struct elf_aarch64_link_hash_entry *h = | |
3141 | (struct elf_aarch64_link_hash_entry *) hash; | |
a06ea964 NC |
3142 | const asection *id_sec; |
3143 | ||
3144 | if ((input_section->flags & SEC_CODE) == 0) | |
3145 | return NULL; | |
3146 | ||
3147 | /* If this input section is part of a group of sections sharing one | |
3148 | stub section, then use the id of the first section in the group. | |
3149 | Stub names need to include a section id, as there may well be | |
3150 | more than one stub used to reach say, printf, and we need to | |
3151 | distinguish between them. */ | |
3152 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3153 | ||
3154 | if (h != NULL && h->stub_cache != NULL | |
3155 | && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec) | |
3156 | { | |
3157 | stub_entry = h->stub_cache; | |
3158 | } | |
3159 | else | |
3160 | { | |
3161 | char *stub_name; | |
3162 | ||
cec5225b | 3163 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel); |
a06ea964 NC |
3164 | if (stub_name == NULL) |
3165 | return NULL; | |
3166 | ||
3167 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
3168 | stub_name, FALSE, FALSE); | |
3169 | if (h != NULL) | |
3170 | h->stub_cache = stub_entry; | |
3171 | ||
3172 | free (stub_name); | |
3173 | } | |
3174 | ||
3175 | return stub_entry; | |
3176 | } | |
3177 | ||
a06ea964 | 3178 | |
66585675 MS |
3179 | /* Create a stub section. */ |
3180 | ||
3181 | static asection * | |
3182 | _bfd_aarch64_create_stub_section (asection *section, | |
3183 | struct elf_aarch64_link_hash_table *htab) | |
3184 | { | |
3185 | size_t namelen; | |
3186 | bfd_size_type len; | |
3187 | char *s_name; | |
3188 | ||
3189 | namelen = strlen (section->name); | |
3190 | len = namelen + sizeof (STUB_SUFFIX); | |
3191 | s_name = bfd_alloc (htab->stub_bfd, len); | |
3192 | if (s_name == NULL) | |
3193 | return NULL; | |
3194 | ||
3195 | memcpy (s_name, section->name, namelen); | |
3196 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
3197 | return (*htab->add_stub_section) (s_name, section); | |
3198 | } | |
3199 | ||
3200 | ||
fc6d53be MS |
3201 | /* Find or create a stub section for a link section. |
3202 | ||
3203 | Fix or create the stub section used to collect stubs attached to | |
3204 | the specified link section. */ | |
3205 | ||
3206 | static asection * | |
3207 | _bfd_aarch64_get_stub_for_link_section (asection *link_section, | |
3208 | struct elf_aarch64_link_hash_table *htab) | |
3209 | { | |
3210 | if (htab->stub_group[link_section->id].stub_sec == NULL) | |
3211 | htab->stub_group[link_section->id].stub_sec | |
3212 | = _bfd_aarch64_create_stub_section (link_section, htab); | |
3213 | return htab->stub_group[link_section->id].stub_sec; | |
3214 | } | |
3215 | ||
3216 | ||
ef857521 MS |
3217 | /* Find or create a stub section in the stub group for an input |
3218 | section. */ | |
3219 | ||
3220 | static asection * | |
3221 | _bfd_aarch64_create_or_find_stub_sec (asection *section, | |
3222 | struct elf_aarch64_link_hash_table *htab) | |
a06ea964 | 3223 | { |
fc6d53be MS |
3224 | asection *link_sec = htab->stub_group[section->id].link_sec; |
3225 | return _bfd_aarch64_get_stub_for_link_section (link_sec, htab); | |
ef857521 MS |
3226 | } |
3227 | ||
3228 | ||
3229 | /* Add a new stub entry in the stub group associated with an input | |
3230 | section to the stub hash. Not all fields of the new stub entry are | |
3231 | initialised. */ | |
3232 | ||
3233 | static struct elf_aarch64_stub_hash_entry * | |
3234 | _bfd_aarch64_add_stub_entry_in_group (const char *stub_name, | |
3235 | asection *section, | |
3236 | struct elf_aarch64_link_hash_table *htab) | |
3237 | { | |
3238 | asection *link_sec; | |
3239 | asection *stub_sec; | |
3240 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
3241 | ||
3242 | link_sec = htab->stub_group[section->id].link_sec; | |
3243 | stub_sec = _bfd_aarch64_create_or_find_stub_sec (section, htab); | |
3244 | ||
a06ea964 NC |
3245 | /* Enter this entry into the linker stub hash table. */ |
3246 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
3247 | TRUE, FALSE); | |
3248 | if (stub_entry == NULL) | |
3249 | { | |
695344c0 | 3250 | /* xgettext:c-format */ |
871b3ab2 | 3251 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
4eca0228 | 3252 | section->owner, stub_name); |
a06ea964 NC |
3253 | return NULL; |
3254 | } | |
3255 | ||
3256 | stub_entry->stub_sec = stub_sec; | |
3257 | stub_entry->stub_offset = 0; | |
3258 | stub_entry->id_sec = link_sec; | |
3259 | ||
3260 | return stub_entry; | |
3261 | } | |
3262 | ||
4106101c MS |
3263 | /* Add a new stub entry in the final stub section to the stub hash. |
3264 | Not all fields of the new stub entry are initialised. */ | |
3265 | ||
3266 | static struct elf_aarch64_stub_hash_entry * | |
3267 | _bfd_aarch64_add_stub_entry_after (const char *stub_name, | |
3268 | asection *link_section, | |
3269 | struct elf_aarch64_link_hash_table *htab) | |
3270 | { | |
3271 | asection *stub_sec; | |
3272 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
3273 | ||
3274 | stub_sec = _bfd_aarch64_get_stub_for_link_section (link_section, htab); | |
3275 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
3276 | TRUE, FALSE); | |
3277 | if (stub_entry == NULL) | |
3278 | { | |
4eca0228 | 3279 | _bfd_error_handler (_("cannot create stub entry %s"), stub_name); |
4106101c MS |
3280 | return NULL; |
3281 | } | |
3282 | ||
3283 | stub_entry->stub_sec = stub_sec; | |
3284 | stub_entry->stub_offset = 0; | |
3285 | stub_entry->id_sec = link_section; | |
3286 | ||
3287 | return stub_entry; | |
3288 | } | |
3289 | ||
3290 | ||
a06ea964 NC |
3291 | static bfd_boolean |
3292 | aarch64_build_one_stub (struct bfd_hash_entry *gen_entry, | |
3293 | void *in_arg ATTRIBUTE_UNUSED) | |
3294 | { | |
cec5225b | 3295 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
3296 | asection *stub_sec; |
3297 | bfd *stub_bfd; | |
3298 | bfd_byte *loc; | |
3299 | bfd_vma sym_value; | |
68fcca92 JW |
3300 | bfd_vma veneered_insn_loc; |
3301 | bfd_vma veneer_entry_loc; | |
3302 | bfd_signed_vma branch_offset = 0; | |
a06ea964 NC |
3303 | unsigned int template_size; |
3304 | const uint32_t *template; | |
3305 | unsigned int i; | |
3306 | ||
3307 | /* Massage our args to the form they really have. */ | |
cec5225b | 3308 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
3309 | |
3310 | stub_sec = stub_entry->stub_sec; | |
3311 | ||
3312 | /* Make a note of the offset within the stubs for this entry. */ | |
3313 | stub_entry->stub_offset = stub_sec->size; | |
3314 | loc = stub_sec->contents + stub_entry->stub_offset; | |
3315 | ||
3316 | stub_bfd = stub_sec->owner; | |
3317 | ||
3318 | /* This is the address of the stub destination. */ | |
3319 | sym_value = (stub_entry->target_value | |
3320 | + stub_entry->target_section->output_offset | |
3321 | + stub_entry->target_section->output_section->vma); | |
3322 | ||
3323 | if (stub_entry->stub_type == aarch64_stub_long_branch) | |
3324 | { | |
3325 | bfd_vma place = (stub_entry->stub_offset + stub_sec->output_section->vma | |
3326 | + stub_sec->output_offset); | |
3327 | ||
3328 | /* See if we can relax the stub. */ | |
3329 | if (aarch64_valid_for_adrp_p (sym_value, place)) | |
3330 | stub_entry->stub_type = aarch64_select_branch_stub (sym_value, place); | |
3331 | } | |
3332 | ||
3333 | switch (stub_entry->stub_type) | |
3334 | { | |
3335 | case aarch64_stub_adrp_branch: | |
3336 | template = aarch64_adrp_branch_stub; | |
3337 | template_size = sizeof (aarch64_adrp_branch_stub); | |
3338 | break; | |
3339 | case aarch64_stub_long_branch: | |
3340 | template = aarch64_long_branch_stub; | |
3341 | template_size = sizeof (aarch64_long_branch_stub); | |
3342 | break; | |
68fcca92 JW |
3343 | case aarch64_stub_erratum_835769_veneer: |
3344 | template = aarch64_erratum_835769_stub; | |
3345 | template_size = sizeof (aarch64_erratum_835769_stub); | |
3346 | break; | |
4106101c MS |
3347 | case aarch64_stub_erratum_843419_veneer: |
3348 | template = aarch64_erratum_843419_stub; | |
3349 | template_size = sizeof (aarch64_erratum_843419_stub); | |
3350 | break; | |
a06ea964 | 3351 | default: |
8e2fe09f | 3352 | abort (); |
a06ea964 NC |
3353 | } |
3354 | ||
3355 | for (i = 0; i < (template_size / sizeof template[0]); i++) | |
3356 | { | |
3357 | bfd_putl32 (template[i], loc); | |
3358 | loc += 4; | |
3359 | } | |
3360 | ||
3361 | template_size = (template_size + 7) & ~7; | |
3362 | stub_sec->size += template_size; | |
3363 | ||
3364 | switch (stub_entry->stub_type) | |
3365 | { | |
3366 | case aarch64_stub_adrp_branch: | |
1d75a8e2 NC |
3367 | if (!aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21), stub_bfd, stub_sec, |
3368 | stub_entry->stub_offset, sym_value)) | |
a06ea964 NC |
3369 | /* The stub would not have been relaxed if the offset was out |
3370 | of range. */ | |
3371 | BFD_FAIL (); | |
3372 | ||
1d75a8e2 NC |
3373 | if (!aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC), stub_bfd, stub_sec, |
3374 | stub_entry->stub_offset + 4, sym_value)) | |
93ca8569 | 3375 | BFD_FAIL (); |
a06ea964 NC |
3376 | break; |
3377 | ||
3378 | case aarch64_stub_long_branch: | |
3379 | /* We want the value relative to the address 12 bytes back from the | |
07d6d2b8 | 3380 | value itself. */ |
1d75a8e2 NC |
3381 | if (!aarch64_relocate (AARCH64_R (PRELNN), stub_bfd, stub_sec, |
3382 | stub_entry->stub_offset + 16, sym_value + 12)) | |
93ca8569 | 3383 | BFD_FAIL (); |
a06ea964 | 3384 | break; |
68fcca92 JW |
3385 | |
3386 | case aarch64_stub_erratum_835769_veneer: | |
3387 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
3388 | + stub_entry->target_section->output_offset | |
3389 | + stub_entry->target_value; | |
3390 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
3391 | + stub_entry->stub_sec->output_offset | |
3392 | + stub_entry->stub_offset; | |
3393 | branch_offset = veneered_insn_loc - veneer_entry_loc; | |
3394 | branch_offset >>= 2; | |
3395 | branch_offset &= 0x3ffffff; | |
3396 | bfd_putl32 (stub_entry->veneered_insn, | |
3397 | stub_sec->contents + stub_entry->stub_offset); | |
3398 | bfd_putl32 (template[1] | branch_offset, | |
3399 | stub_sec->contents + stub_entry->stub_offset + 4); | |
3400 | break; | |
3401 | ||
4106101c | 3402 | case aarch64_stub_erratum_843419_veneer: |
1d75a8e2 NC |
3403 | if (!aarch64_relocate (AARCH64_R (JUMP26), stub_bfd, stub_sec, |
3404 | stub_entry->stub_offset + 4, sym_value + 4)) | |
4106101c MS |
3405 | BFD_FAIL (); |
3406 | break; | |
3407 | ||
a06ea964 | 3408 | default: |
8e2fe09f | 3409 | abort (); |
a06ea964 NC |
3410 | } |
3411 | ||
3412 | return TRUE; | |
3413 | } | |
3414 | ||
3415 | /* As above, but don't actually build the stub. Just bump offset so | |
3416 | we know stub section sizes. */ | |
3417 | ||
3418 | static bfd_boolean | |
3419 | aarch64_size_one_stub (struct bfd_hash_entry *gen_entry, | |
3420 | void *in_arg ATTRIBUTE_UNUSED) | |
3421 | { | |
cec5225b | 3422 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
3423 | int size; |
3424 | ||
3425 | /* Massage our args to the form they really have. */ | |
cec5225b | 3426 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
3427 | |
3428 | switch (stub_entry->stub_type) | |
3429 | { | |
3430 | case aarch64_stub_adrp_branch: | |
3431 | size = sizeof (aarch64_adrp_branch_stub); | |
3432 | break; | |
3433 | case aarch64_stub_long_branch: | |
3434 | size = sizeof (aarch64_long_branch_stub); | |
3435 | break; | |
68fcca92 JW |
3436 | case aarch64_stub_erratum_835769_veneer: |
3437 | size = sizeof (aarch64_erratum_835769_stub); | |
3438 | break; | |
4106101c MS |
3439 | case aarch64_stub_erratum_843419_veneer: |
3440 | size = sizeof (aarch64_erratum_843419_stub); | |
3441 | break; | |
a06ea964 | 3442 | default: |
8e2fe09f | 3443 | abort (); |
a06ea964 NC |
3444 | } |
3445 | ||
3446 | size = (size + 7) & ~7; | |
3447 | stub_entry->stub_sec->size += size; | |
3448 | return TRUE; | |
3449 | } | |
3450 | ||
3451 | /* External entry points for sizing and building linker stubs. */ | |
3452 | ||
3453 | /* Set up various things so that we can make a list of input sections | |
3454 | for each output section included in the link. Returns -1 on error, | |
3455 | 0 when no stubs will be needed, and 1 on success. */ | |
3456 | ||
3457 | int | |
cec5225b | 3458 | elfNN_aarch64_setup_section_lists (bfd *output_bfd, |
a06ea964 NC |
3459 | struct bfd_link_info *info) |
3460 | { | |
3461 | bfd *input_bfd; | |
3462 | unsigned int bfd_count; | |
7292b3ac | 3463 | unsigned int top_id, top_index; |
a06ea964 NC |
3464 | asection *section; |
3465 | asection **input_list, **list; | |
3466 | bfd_size_type amt; | |
cec5225b YZ |
3467 | struct elf_aarch64_link_hash_table *htab = |
3468 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
3469 | |
3470 | if (!is_elf_hash_table (htab)) | |
3471 | return 0; | |
3472 | ||
3473 | /* Count the number of input BFDs and find the top input section id. */ | |
3474 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
c72f2fb2 | 3475 | input_bfd != NULL; input_bfd = input_bfd->link.next) |
a06ea964 NC |
3476 | { |
3477 | bfd_count += 1; | |
3478 | for (section = input_bfd->sections; | |
3479 | section != NULL; section = section->next) | |
3480 | { | |
3481 | if (top_id < section->id) | |
3482 | top_id = section->id; | |
3483 | } | |
3484 | } | |
3485 | htab->bfd_count = bfd_count; | |
3486 | ||
3487 | amt = sizeof (struct map_stub) * (top_id + 1); | |
3488 | htab->stub_group = bfd_zmalloc (amt); | |
3489 | if (htab->stub_group == NULL) | |
3490 | return -1; | |
3491 | ||
3492 | /* We can't use output_bfd->section_count here to find the top output | |
3493 | section index as some sections may have been removed, and | |
3494 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
3495 | for (section = output_bfd->sections, top_index = 0; | |
3496 | section != NULL; section = section->next) | |
3497 | { | |
3498 | if (top_index < section->index) | |
3499 | top_index = section->index; | |
3500 | } | |
3501 | ||
3502 | htab->top_index = top_index; | |
3503 | amt = sizeof (asection *) * (top_index + 1); | |
3504 | input_list = bfd_malloc (amt); | |
3505 | htab->input_list = input_list; | |
3506 | if (input_list == NULL) | |
3507 | return -1; | |
3508 | ||
3509 | /* For sections we aren't interested in, mark their entries with a | |
3510 | value we can check later. */ | |
3511 | list = input_list + top_index; | |
3512 | do | |
3513 | *list = bfd_abs_section_ptr; | |
3514 | while (list-- != input_list); | |
3515 | ||
3516 | for (section = output_bfd->sections; | |
3517 | section != NULL; section = section->next) | |
3518 | { | |
3519 | if ((section->flags & SEC_CODE) != 0) | |
3520 | input_list[section->index] = NULL; | |
3521 | } | |
3522 | ||
3523 | return 1; | |
3524 | } | |
3525 | ||
cec5225b | 3526 | /* Used by elfNN_aarch64_next_input_section and group_sections. */ |
a06ea964 NC |
3527 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3528 | ||
3529 | /* The linker repeatedly calls this function for each input section, | |
3530 | in the order that input sections are linked into output sections. | |
3531 | Build lists of input sections to determine groupings between which | |
3532 | we may insert linker stubs. */ | |
3533 | ||
3534 | void | |
cec5225b | 3535 | elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec) |
a06ea964 | 3536 | { |
cec5225b YZ |
3537 | struct elf_aarch64_link_hash_table *htab = |
3538 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
3539 | |
3540 | if (isec->output_section->index <= htab->top_index) | |
3541 | { | |
3542 | asection **list = htab->input_list + isec->output_section->index; | |
3543 | ||
3544 | if (*list != bfd_abs_section_ptr) | |
3545 | { | |
3546 | /* Steal the link_sec pointer for our list. */ | |
3547 | /* This happens to make the list in reverse order, | |
3548 | which is what we want. */ | |
3549 | PREV_SEC (isec) = *list; | |
3550 | *list = isec; | |
3551 | } | |
3552 | } | |
3553 | } | |
3554 | ||
3555 | /* See whether we can group stub sections together. Grouping stub | |
3556 | sections may result in fewer stubs. More importantly, we need to | |
3557 | put all .init* and .fini* stubs at the beginning of the .init or | |
3558 | .fini output sections respectively, because glibc splits the | |
3559 | _init and _fini functions into multiple parts. Putting a stub in | |
3560 | the middle of a function is not a good idea. */ | |
3561 | ||
3562 | static void | |
cec5225b | 3563 | group_sections (struct elf_aarch64_link_hash_table *htab, |
a06ea964 NC |
3564 | bfd_size_type stub_group_size, |
3565 | bfd_boolean stubs_always_before_branch) | |
3566 | { | |
3567 | asection **list = htab->input_list + htab->top_index; | |
3568 | ||
3569 | do | |
3570 | { | |
3571 | asection *tail = *list; | |
3572 | ||
3573 | if (tail == bfd_abs_section_ptr) | |
3574 | continue; | |
3575 | ||
3576 | while (tail != NULL) | |
3577 | { | |
3578 | asection *curr; | |
3579 | asection *prev; | |
3580 | bfd_size_type total; | |
3581 | ||
3582 | curr = tail; | |
3583 | total = tail->size; | |
3584 | while ((prev = PREV_SEC (curr)) != NULL | |
3585 | && ((total += curr->output_offset - prev->output_offset) | |
3586 | < stub_group_size)) | |
3587 | curr = prev; | |
3588 | ||
3589 | /* OK, the size from the start of CURR to the end is less | |
3590 | than stub_group_size and thus can be handled by one stub | |
3591 | section. (Or the tail section is itself larger than | |
3592 | stub_group_size, in which case we may be toast.) | |
3593 | We should really be keeping track of the total size of | |
3594 | stubs added here, as stubs contribute to the final output | |
3595 | section size. */ | |
3596 | do | |
3597 | { | |
3598 | prev = PREV_SEC (tail); | |
3599 | /* Set up this stub group. */ | |
3600 | htab->stub_group[tail->id].link_sec = curr; | |
3601 | } | |
3602 | while (tail != curr && (tail = prev) != NULL); | |
3603 | ||
3604 | /* But wait, there's more! Input sections up to stub_group_size | |
3605 | bytes before the stub section can be handled by it too. */ | |
3606 | if (!stubs_always_before_branch) | |
3607 | { | |
3608 | total = 0; | |
3609 | while (prev != NULL | |
3610 | && ((total += tail->output_offset - prev->output_offset) | |
3611 | < stub_group_size)) | |
3612 | { | |
3613 | tail = prev; | |
3614 | prev = PREV_SEC (tail); | |
3615 | htab->stub_group[tail->id].link_sec = curr; | |
3616 | } | |
3617 | } | |
3618 | tail = prev; | |
3619 | } | |
3620 | } | |
3621 | while (list-- != htab->input_list); | |
3622 | ||
3623 | free (htab->input_list); | |
3624 | } | |
3625 | ||
3626 | #undef PREV_SEC | |
3627 | ||
68fcca92 JW |
3628 | #define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1)) |
3629 | ||
3630 | #define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5) | |
3631 | #define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5) | |
3632 | #define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5) | |
3633 | #define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5) | |
3634 | #define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5) | |
3635 | #define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5) | |
3636 | ||
3637 | #define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000) | |
3638 | #define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1) | |
3639 | #define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3) | |
3640 | #define AARCH64_ZR 0x1f | |
3641 | ||
3642 | /* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for | |
3643 | LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */ | |
3644 | ||
3645 | #define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1) | |
3646 | #define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000) | |
3647 | #define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000) | |
3648 | #define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000) | |
3649 | #define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000) | |
3650 | #define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000) | |
3651 | #define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000) | |
3652 | #define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000) | |
3653 | #define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000) | |
3654 | #define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400) | |
3655 | #define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800) | |
3656 | #define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00) | |
3657 | #define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800) | |
3658 | #define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000) | |
3659 | #define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000) | |
3660 | #define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000) | |
3661 | #define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000) | |
3662 | #define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000) | |
3663 | ||
3d14faea MS |
3664 | /* Classify an INSN if it is indeed a load/store. |
3665 | ||
3666 | Return TRUE if INSN is a LD/ST instruction otherwise return FALSE. | |
3667 | ||
3668 | For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2 | |
3669 | is set equal to RT. | |
3670 | ||
2d0ca824 | 3671 | For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. */ |
68fcca92 JW |
3672 | |
3673 | static bfd_boolean | |
3d14faea | 3674 | aarch64_mem_op_p (uint32_t insn, unsigned int *rt, unsigned int *rt2, |
68fcca92 JW |
3675 | bfd_boolean *pair, bfd_boolean *load) |
3676 | { | |
3677 | uint32_t opcode; | |
3678 | unsigned int r; | |
3679 | uint32_t opc = 0; | |
3680 | uint32_t v = 0; | |
3681 | uint32_t opc_v = 0; | |
3682 | ||
de194d85 | 3683 | /* Bail out quickly if INSN doesn't fall into the load-store |
68fcca92 JW |
3684 | encoding space. */ |
3685 | if (!AARCH64_LDST (insn)) | |
3686 | return FALSE; | |
3687 | ||
3688 | *pair = FALSE; | |
3689 | *load = FALSE; | |
3690 | if (AARCH64_LDST_EX (insn)) | |
3691 | { | |
3692 | *rt = AARCH64_RT (insn); | |
3d14faea | 3693 | *rt2 = *rt; |
68fcca92 | 3694 | if (AARCH64_BIT (insn, 21) == 1) |
07d6d2b8 | 3695 | { |
68fcca92 | 3696 | *pair = TRUE; |
3d14faea | 3697 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
3698 | } |
3699 | *load = AARCH64_LD (insn); | |
3700 | return TRUE; | |
3701 | } | |
3702 | else if (AARCH64_LDST_NAP (insn) | |
3703 | || AARCH64_LDSTP_PI (insn) | |
3704 | || AARCH64_LDSTP_O (insn) | |
3705 | || AARCH64_LDSTP_PRE (insn)) | |
3706 | { | |
3707 | *pair = TRUE; | |
3708 | *rt = AARCH64_RT (insn); | |
3d14faea | 3709 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
3710 | *load = AARCH64_LD (insn); |
3711 | return TRUE; | |
3712 | } | |
3713 | else if (AARCH64_LDST_PCREL (insn) | |
3714 | || AARCH64_LDST_UI (insn) | |
3715 | || AARCH64_LDST_PIIMM (insn) | |
3716 | || AARCH64_LDST_U (insn) | |
3717 | || AARCH64_LDST_PREIMM (insn) | |
3718 | || AARCH64_LDST_RO (insn) | |
3719 | || AARCH64_LDST_UIMM (insn)) | |
3720 | { | |
3721 | *rt = AARCH64_RT (insn); | |
3d14faea | 3722 | *rt2 = *rt; |
68fcca92 JW |
3723 | if (AARCH64_LDST_PCREL (insn)) |
3724 | *load = TRUE; | |
3725 | opc = AARCH64_BITS (insn, 22, 2); | |
3726 | v = AARCH64_BIT (insn, 26); | |
3727 | opc_v = opc | (v << 2); | |
3728 | *load = (opc_v == 1 || opc_v == 2 || opc_v == 3 | |
3729 | || opc_v == 5 || opc_v == 7); | |
3730 | return TRUE; | |
3731 | } | |
3732 | else if (AARCH64_LDST_SIMD_M (insn) | |
3733 | || AARCH64_LDST_SIMD_M_PI (insn)) | |
3734 | { | |
3735 | *rt = AARCH64_RT (insn); | |
3736 | *load = AARCH64_BIT (insn, 22); | |
3737 | opcode = (insn >> 12) & 0xf; | |
3738 | switch (opcode) | |
3739 | { | |
3740 | case 0: | |
3741 | case 2: | |
3d14faea | 3742 | *rt2 = *rt + 3; |
68fcca92 JW |
3743 | break; |
3744 | ||
3745 | case 4: | |
3746 | case 6: | |
3d14faea | 3747 | *rt2 = *rt + 2; |
68fcca92 JW |
3748 | break; |
3749 | ||
3750 | case 7: | |
3d14faea | 3751 | *rt2 = *rt; |
68fcca92 JW |
3752 | break; |
3753 | ||
3754 | case 8: | |
3755 | case 10: | |
3d14faea | 3756 | *rt2 = *rt + 1; |
68fcca92 JW |
3757 | break; |
3758 | ||
3759 | default: | |
3760 | return FALSE; | |
3761 | } | |
3762 | return TRUE; | |
3763 | } | |
3764 | else if (AARCH64_LDST_SIMD_S (insn) | |
3765 | || AARCH64_LDST_SIMD_S_PI (insn)) | |
3766 | { | |
3767 | *rt = AARCH64_RT (insn); | |
3768 | r = (insn >> 21) & 1; | |
3769 | *load = AARCH64_BIT (insn, 22); | |
3770 | opcode = (insn >> 13) & 0x7; | |
3771 | switch (opcode) | |
3772 | { | |
3773 | case 0: | |
3774 | case 2: | |
3775 | case 4: | |
3d14faea | 3776 | *rt2 = *rt + r; |
68fcca92 JW |
3777 | break; |
3778 | ||
3779 | case 1: | |
3780 | case 3: | |
3781 | case 5: | |
3d14faea | 3782 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
3783 | break; |
3784 | ||
3785 | case 6: | |
3d14faea | 3786 | *rt2 = *rt + r; |
68fcca92 JW |
3787 | break; |
3788 | ||
3789 | case 7: | |
3d14faea | 3790 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
3791 | break; |
3792 | ||
3793 | default: | |
3794 | return FALSE; | |
3795 | } | |
3796 | return TRUE; | |
3797 | } | |
3798 | ||
3799 | return FALSE; | |
3800 | } | |
3801 | ||
3802 | /* Return TRUE if INSN is multiply-accumulate. */ | |
3803 | ||
3804 | static bfd_boolean | |
3805 | aarch64_mlxl_p (uint32_t insn) | |
3806 | { | |
3807 | uint32_t op31 = AARCH64_OP31 (insn); | |
3808 | ||
3809 | if (AARCH64_MAC (insn) | |
3810 | && (op31 == 0 || op31 == 1 || op31 == 5) | |
3811 | /* Exclude MUL instructions which are encoded as a multiple accumulate | |
3812 | with RA = XZR. */ | |
3813 | && AARCH64_RA (insn) != AARCH64_ZR) | |
3814 | return TRUE; | |
3815 | ||
3816 | return FALSE; | |
3817 | } | |
3818 | ||
3819 | /* Some early revisions of the Cortex-A53 have an erratum (835769) whereby | |
3820 | it is possible for a 64-bit multiply-accumulate instruction to generate an | |
3821 | incorrect result. The details are quite complex and hard to | |
3822 | determine statically, since branches in the code may exist in some | |
3823 | circumstances, but all cases end with a memory (load, store, or | |
3824 | prefetch) instruction followed immediately by the multiply-accumulate | |
3825 | operation. We employ a linker patching technique, by moving the potentially | |
3826 | affected multiply-accumulate instruction into a patch region and replacing | |
3827 | the original instruction with a branch to the patch. This function checks | |
3828 | if INSN_1 is the memory operation followed by a multiply-accumulate | |
3829 | operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE | |
3830 | if INSN_1 and INSN_2 are safe. */ | |
3831 | ||
3832 | static bfd_boolean | |
3833 | aarch64_erratum_sequence (uint32_t insn_1, uint32_t insn_2) | |
3834 | { | |
3835 | uint32_t rt; | |
3d14faea | 3836 | uint32_t rt2; |
68fcca92 JW |
3837 | uint32_t rn; |
3838 | uint32_t rm; | |
3839 | uint32_t ra; | |
3840 | bfd_boolean pair; | |
3841 | bfd_boolean load; | |
3842 | ||
3843 | if (aarch64_mlxl_p (insn_2) | |
3d14faea | 3844 | && aarch64_mem_op_p (insn_1, &rt, &rt2, &pair, &load)) |
68fcca92 JW |
3845 | { |
3846 | /* Any SIMD memory op is independent of the subsequent MLA | |
3847 | by definition of the erratum. */ | |
3848 | if (AARCH64_BIT (insn_1, 26)) | |
3849 | return TRUE; | |
3850 | ||
3851 | /* If not SIMD, check for integer memory ops and MLA relationship. */ | |
3852 | rn = AARCH64_RN (insn_2); | |
3853 | ra = AARCH64_RA (insn_2); | |
3854 | rm = AARCH64_RM (insn_2); | |
3855 | ||
3856 | /* If this is a load and there's a true(RAW) dependency, we are safe | |
3857 | and this is not an erratum sequence. */ | |
3858 | if (load && | |
3859 | (rt == rn || rt == rm || rt == ra | |
3d14faea | 3860 | || (pair && (rt2 == rn || rt2 == rm || rt2 == ra)))) |
68fcca92 JW |
3861 | return FALSE; |
3862 | ||
3863 | /* We conservatively put out stubs for all other cases (including | |
3864 | writebacks). */ | |
3865 | return TRUE; | |
3866 | } | |
3867 | ||
3868 | return FALSE; | |
3869 | } | |
3870 | ||
520c7b56 JW |
3871 | /* Used to order a list of mapping symbols by address. */ |
3872 | ||
3873 | static int | |
3874 | elf_aarch64_compare_mapping (const void *a, const void *b) | |
3875 | { | |
3876 | const elf_aarch64_section_map *amap = (const elf_aarch64_section_map *) a; | |
3877 | const elf_aarch64_section_map *bmap = (const elf_aarch64_section_map *) b; | |
3878 | ||
3879 | if (amap->vma > bmap->vma) | |
3880 | return 1; | |
3881 | else if (amap->vma < bmap->vma) | |
3882 | return -1; | |
3883 | else if (amap->type > bmap->type) | |
3884 | /* Ensure results do not depend on the host qsort for objects with | |
3885 | multiple mapping symbols at the same address by sorting on type | |
3886 | after vma. */ | |
3887 | return 1; | |
3888 | else if (amap->type < bmap->type) | |
3889 | return -1; | |
3890 | else | |
3891 | return 0; | |
3892 | } | |
3893 | ||
2144188d | 3894 | |
35fee8b7 MS |
3895 | static char * |
3896 | _bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes) | |
3897 | { | |
3898 | char *stub_name = (char *) bfd_malloc | |
3899 | (strlen ("__erratum_835769_veneer_") + 16); | |
bb69498c NC |
3900 | if (stub_name != NULL) |
3901 | sprintf (stub_name,"__erratum_835769_veneer_%d", num_fixes); | |
35fee8b7 MS |
3902 | return stub_name; |
3903 | } | |
3904 | ||
4106101c | 3905 | /* Scan for Cortex-A53 erratum 835769 sequence. |
2144188d MS |
3906 | |
3907 | Return TRUE else FALSE on abnormal termination. */ | |
3908 | ||
68fcca92 | 3909 | static bfd_boolean |
5421cc6e MS |
3910 | _bfd_aarch64_erratum_835769_scan (bfd *input_bfd, |
3911 | struct bfd_link_info *info, | |
3912 | unsigned int *num_fixes_p) | |
68fcca92 JW |
3913 | { |
3914 | asection *section; | |
3915 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
68fcca92 | 3916 | unsigned int num_fixes = *num_fixes_p; |
68fcca92 JW |
3917 | |
3918 | if (htab == NULL) | |
2144188d | 3919 | return TRUE; |
68fcca92 JW |
3920 | |
3921 | for (section = input_bfd->sections; | |
3922 | section != NULL; | |
3923 | section = section->next) | |
3924 | { | |
3925 | bfd_byte *contents = NULL; | |
3926 | struct _aarch64_elf_section_data *sec_data; | |
3927 | unsigned int span; | |
3928 | ||
3929 | if (elf_section_type (section) != SHT_PROGBITS | |
3930 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
3931 | || (section->flags & SEC_EXCLUDE) != 0 | |
3932 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
3933 | || (section->output_section == bfd_abs_section_ptr)) | |
3934 | continue; | |
3935 | ||
3936 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
3937 | contents = elf_section_data (section)->this_hdr.contents; | |
3938 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
2144188d | 3939 | return FALSE; |
68fcca92 JW |
3940 | |
3941 | sec_data = elf_aarch64_section_data (section); | |
520c7b56 JW |
3942 | |
3943 | qsort (sec_data->map, sec_data->mapcount, | |
3944 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
3945 | ||
68fcca92 JW |
3946 | for (span = 0; span < sec_data->mapcount; span++) |
3947 | { | |
3948 | unsigned int span_start = sec_data->map[span].vma; | |
3949 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
3950 | ? sec_data->map[0].vma + section->size | |
3951 | : sec_data->map[span + 1].vma); | |
3952 | unsigned int i; | |
3953 | char span_type = sec_data->map[span].type; | |
3954 | ||
3955 | if (span_type == 'd') | |
3956 | continue; | |
3957 | ||
3958 | for (i = span_start; i + 4 < span_end; i += 4) | |
3959 | { | |
3960 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
3961 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
3962 | ||
3963 | if (aarch64_erratum_sequence (insn_1, insn_2)) | |
3964 | { | |
5421cc6e | 3965 | struct elf_aarch64_stub_hash_entry *stub_entry; |
35fee8b7 MS |
3966 | char *stub_name = _bfd_aarch64_erratum_835769_stub_name (num_fixes); |
3967 | if (! stub_name) | |
2144188d | 3968 | return FALSE; |
68fcca92 | 3969 | |
5421cc6e MS |
3970 | stub_entry = _bfd_aarch64_add_stub_entry_in_group (stub_name, |
3971 | section, | |
3972 | htab); | |
3973 | if (! stub_entry) | |
3974 | return FALSE; | |
68fcca92 | 3975 | |
5421cc6e MS |
3976 | stub_entry->stub_type = aarch64_stub_erratum_835769_veneer; |
3977 | stub_entry->target_section = section; | |
3978 | stub_entry->target_value = i + 4; | |
3979 | stub_entry->veneered_insn = insn_2; | |
3980 | stub_entry->output_name = stub_name; | |
68fcca92 JW |
3981 | num_fixes++; |
3982 | } | |
3983 | } | |
3984 | } | |
3985 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
3986 | free (contents); | |
3987 | } | |
3988 | ||
357d1523 MS |
3989 | *num_fixes_p = num_fixes; |
3990 | ||
2144188d | 3991 | return TRUE; |
68fcca92 JW |
3992 | } |
3993 | ||
13f622ec | 3994 | |
4106101c MS |
3995 | /* Test if instruction INSN is ADRP. */ |
3996 | ||
3997 | static bfd_boolean | |
3998 | _bfd_aarch64_adrp_p (uint32_t insn) | |
3999 | { | |
9fca35fc | 4000 | return ((insn & AARCH64_ADRP_OP_MASK) == AARCH64_ADRP_OP); |
4106101c MS |
4001 | } |
4002 | ||
4003 | ||
4004 | /* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */ | |
4005 | ||
4006 | static bfd_boolean | |
4007 | _bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1, uint32_t insn_2, | |
4008 | uint32_t insn_3) | |
4009 | { | |
4010 | uint32_t rt; | |
4011 | uint32_t rt2; | |
4012 | bfd_boolean pair; | |
4013 | bfd_boolean load; | |
4014 | ||
4015 | return (aarch64_mem_op_p (insn_2, &rt, &rt2, &pair, &load) | |
4016 | && (!pair | |
4017 | || (pair && !load)) | |
4018 | && AARCH64_LDST_UIMM (insn_3) | |
4019 | && AARCH64_RN (insn_3) == AARCH64_RD (insn_1)); | |
4020 | } | |
4021 | ||
4022 | ||
4023 | /* Test for the presence of Cortex-A53 erratum 843419 instruction sequence. | |
4024 | ||
4025 | Return TRUE if section CONTENTS at offset I contains one of the | |
4026 | erratum 843419 sequences, otherwise return FALSE. If a sequence is | |
4027 | seen set P_VENEER_I to the offset of the final LOAD/STORE | |
4028 | instruction in the sequence. | |
4029 | */ | |
4030 | ||
4031 | static bfd_boolean | |
4032 | _bfd_aarch64_erratum_843419_p (bfd_byte *contents, bfd_vma vma, | |
4033 | bfd_vma i, bfd_vma span_end, | |
4034 | bfd_vma *p_veneer_i) | |
4035 | { | |
4036 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
4037 | ||
4038 | if (!_bfd_aarch64_adrp_p (insn_1)) | |
4039 | return FALSE; | |
4040 | ||
4041 | if (span_end < i + 12) | |
4042 | return FALSE; | |
4043 | ||
4044 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
4045 | uint32_t insn_3 = bfd_getl32 (contents + i + 8); | |
4046 | ||
4047 | if ((vma & 0xfff) != 0xff8 && (vma & 0xfff) != 0xffc) | |
4048 | return FALSE; | |
4049 | ||
4050 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_3)) | |
4051 | { | |
4052 | *p_veneer_i = i + 8; | |
4053 | return TRUE; | |
4054 | } | |
4055 | ||
4056 | if (span_end < i + 16) | |
4057 | return FALSE; | |
4058 | ||
4059 | uint32_t insn_4 = bfd_getl32 (contents + i + 12); | |
4060 | ||
4061 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_4)) | |
4062 | { | |
4063 | *p_veneer_i = i + 12; | |
4064 | return TRUE; | |
4065 | } | |
4066 | ||
4067 | return FALSE; | |
4068 | } | |
4069 | ||
4070 | ||
13f622ec MS |
4071 | /* Resize all stub sections. */ |
4072 | ||
4073 | static void | |
4074 | _bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table *htab) | |
4075 | { | |
4076 | asection *section; | |
4077 | ||
4078 | /* OK, we've added some stubs. Find out the new size of the | |
4079 | stub sections. */ | |
4080 | for (section = htab->stub_bfd->sections; | |
4081 | section != NULL; section = section->next) | |
4082 | { | |
4083 | /* Ignore non-stub sections. */ | |
4084 | if (!strstr (section->name, STUB_SUFFIX)) | |
4085 | continue; | |
4086 | section->size = 0; | |
4087 | } | |
4088 | ||
4089 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab); | |
13f622ec | 4090 | |
61865519 MS |
4091 | for (section = htab->stub_bfd->sections; |
4092 | section != NULL; section = section->next) | |
4093 | { | |
4094 | if (!strstr (section->name, STUB_SUFFIX)) | |
4095 | continue; | |
4096 | ||
9a2ebffd JW |
4097 | /* Add space for a branch. Add 8 bytes to keep section 8 byte aligned, |
4098 | as long branch stubs contain a 64-bit address. */ | |
61865519 | 4099 | if (section->size) |
9a2ebffd | 4100 | section->size += 8; |
4106101c MS |
4101 | |
4102 | /* Ensure all stub sections have a size which is a multiple of | |
4103 | 4096. This is important in order to ensure that the insertion | |
4104 | of stub sections does not in itself move existing code around | |
4105 | in such a way that new errata sequences are created. */ | |
4106 | if (htab->fix_erratum_843419) | |
4107 | if (section->size) | |
4108 | section->size = BFD_ALIGN (section->size, 0x1000); | |
4109 | } | |
4110 | } | |
4111 | ||
9a2ebffd | 4112 | /* Construct an erratum 843419 workaround stub name. */ |
4106101c MS |
4113 | |
4114 | static char * | |
4115 | _bfd_aarch64_erratum_843419_stub_name (asection *input_section, | |
4116 | bfd_vma offset) | |
4117 | { | |
4118 | const bfd_size_type len = 8 + 4 + 1 + 8 + 1 + 16 + 1; | |
4119 | char *stub_name = bfd_malloc (len); | |
4120 | ||
4121 | if (stub_name != NULL) | |
4122 | snprintf (stub_name, len, "e843419@%04x_%08x_%" BFD_VMA_FMT "x", | |
4123 | input_section->owner->id, | |
4124 | input_section->id, | |
4125 | offset); | |
4126 | return stub_name; | |
4127 | } | |
4128 | ||
4129 | /* Build a stub_entry structure describing an 843419 fixup. | |
4130 | ||
4131 | The stub_entry constructed is populated with the bit pattern INSN | |
4132 | of the instruction located at OFFSET within input SECTION. | |
4133 | ||
4134 | Returns TRUE on success. */ | |
4135 | ||
4136 | static bfd_boolean | |
4137 | _bfd_aarch64_erratum_843419_fixup (uint32_t insn, | |
4138 | bfd_vma adrp_offset, | |
4139 | bfd_vma ldst_offset, | |
4140 | asection *section, | |
4141 | struct bfd_link_info *info) | |
4142 | { | |
4143 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
4144 | char *stub_name; | |
4145 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
4146 | ||
4147 | stub_name = _bfd_aarch64_erratum_843419_stub_name (section, ldst_offset); | |
bb69498c NC |
4148 | if (stub_name == NULL) |
4149 | return FALSE; | |
4106101c MS |
4150 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, |
4151 | FALSE, FALSE); | |
4152 | if (stub_entry) | |
4153 | { | |
4154 | free (stub_name); | |
4155 | return TRUE; | |
4156 | } | |
4157 | ||
4158 | /* We always place an 843419 workaround veneer in the stub section | |
4159 | attached to the input section in which an erratum sequence has | |
4160 | been found. This ensures that later in the link process (in | |
4161 | elfNN_aarch64_write_section) when we copy the veneered | |
4162 | instruction from the input section into the stub section the | |
4163 | copied instruction will have had any relocations applied to it. | |
4164 | If we placed workaround veneers in any other stub section then we | |
4165 | could not assume that all relocations have been processed on the | |
4166 | corresponding input section at the point we output the stub | |
bb69498c | 4167 | section. */ |
4106101c MS |
4168 | |
4169 | stub_entry = _bfd_aarch64_add_stub_entry_after (stub_name, section, htab); | |
4170 | if (stub_entry == NULL) | |
4171 | { | |
4172 | free (stub_name); | |
4173 | return FALSE; | |
4174 | } | |
4175 | ||
4176 | stub_entry->adrp_offset = adrp_offset; | |
4177 | stub_entry->target_value = ldst_offset; | |
4178 | stub_entry->target_section = section; | |
4179 | stub_entry->stub_type = aarch64_stub_erratum_843419_veneer; | |
4180 | stub_entry->veneered_insn = insn; | |
4181 | stub_entry->output_name = stub_name; | |
4182 | ||
4183 | return TRUE; | |
4184 | } | |
4185 | ||
4186 | ||
4187 | /* Scan an input section looking for the signature of erratum 843419. | |
4188 | ||
4189 | Scans input SECTION in INPUT_BFD looking for erratum 843419 | |
4190 | signatures, for each signature found a stub_entry is created | |
4191 | describing the location of the erratum for subsequent fixup. | |
4192 | ||
4193 | Return TRUE on successful scan, FALSE on failure to scan. | |
4194 | */ | |
4195 | ||
4196 | static bfd_boolean | |
4197 | _bfd_aarch64_erratum_843419_scan (bfd *input_bfd, asection *section, | |
4198 | struct bfd_link_info *info) | |
4199 | { | |
4200 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
4201 | ||
4202 | if (htab == NULL) | |
4203 | return TRUE; | |
4204 | ||
4205 | if (elf_section_type (section) != SHT_PROGBITS | |
4206 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
4207 | || (section->flags & SEC_EXCLUDE) != 0 | |
4208 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
4209 | || (section->output_section == bfd_abs_section_ptr)) | |
4210 | return TRUE; | |
4211 | ||
4212 | do | |
4213 | { | |
4214 | bfd_byte *contents = NULL; | |
4215 | struct _aarch64_elf_section_data *sec_data; | |
4216 | unsigned int span; | |
4217 | ||
4218 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
4219 | contents = elf_section_data (section)->this_hdr.contents; | |
4220 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
4221 | return FALSE; | |
4222 | ||
4223 | sec_data = elf_aarch64_section_data (section); | |
4224 | ||
4225 | qsort (sec_data->map, sec_data->mapcount, | |
4226 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
4227 | ||
4228 | for (span = 0; span < sec_data->mapcount; span++) | |
4229 | { | |
4230 | unsigned int span_start = sec_data->map[span].vma; | |
4231 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
4232 | ? sec_data->map[0].vma + section->size | |
4233 | : sec_data->map[span + 1].vma); | |
4234 | unsigned int i; | |
4235 | char span_type = sec_data->map[span].type; | |
4236 | ||
4237 | if (span_type == 'd') | |
4238 | continue; | |
4239 | ||
4240 | for (i = span_start; i + 8 < span_end; i += 4) | |
4241 | { | |
4242 | bfd_vma vma = (section->output_section->vma | |
4243 | + section->output_offset | |
4244 | + i); | |
4245 | bfd_vma veneer_i; | |
4246 | ||
4247 | if (_bfd_aarch64_erratum_843419_p | |
4248 | (contents, vma, i, span_end, &veneer_i)) | |
4249 | { | |
4250 | uint32_t insn = bfd_getl32 (contents + veneer_i); | |
4251 | ||
4252 | if (!_bfd_aarch64_erratum_843419_fixup (insn, i, veneer_i, | |
4253 | section, info)) | |
4254 | return FALSE; | |
4255 | } | |
4256 | } | |
4257 | } | |
4258 | ||
4259 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
4260 | free (contents); | |
61865519 | 4261 | } |
4106101c MS |
4262 | while (0); |
4263 | ||
4264 | return TRUE; | |
61865519 | 4265 | } |
13f622ec | 4266 | |
4106101c | 4267 | |
a06ea964 NC |
4268 | /* Determine and set the size of the stub section for a final link. |
4269 | ||
4270 | The basic idea here is to examine all the relocations looking for | |
4271 | PC-relative calls to a target that is unreachable with a "bl" | |
4272 | instruction. */ | |
4273 | ||
4274 | bfd_boolean | |
cec5225b | 4275 | elfNN_aarch64_size_stubs (bfd *output_bfd, |
a06ea964 NC |
4276 | bfd *stub_bfd, |
4277 | struct bfd_link_info *info, | |
4278 | bfd_signed_vma group_size, | |
4279 | asection * (*add_stub_section) (const char *, | |
4280 | asection *), | |
4281 | void (*layout_sections_again) (void)) | |
4282 | { | |
4283 | bfd_size_type stub_group_size; | |
4284 | bfd_boolean stubs_always_before_branch; | |
5421cc6e | 4285 | bfd_boolean stub_changed = FALSE; |
cec5225b | 4286 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); |
68fcca92 | 4287 | unsigned int num_erratum_835769_fixes = 0; |
a06ea964 NC |
4288 | |
4289 | /* Propagate mach to stub bfd, because it may not have been | |
4290 | finalized when we created stub_bfd. */ | |
4291 | bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd), | |
4292 | bfd_get_mach (output_bfd)); | |
4293 | ||
4294 | /* Stash our params away. */ | |
4295 | htab->stub_bfd = stub_bfd; | |
4296 | htab->add_stub_section = add_stub_section; | |
4297 | htab->layout_sections_again = layout_sections_again; | |
4298 | stubs_always_before_branch = group_size < 0; | |
4299 | if (group_size < 0) | |
4300 | stub_group_size = -group_size; | |
4301 | else | |
4302 | stub_group_size = group_size; | |
4303 | ||
4304 | if (stub_group_size == 1) | |
4305 | { | |
4306 | /* Default values. */ | |
b9eead84 | 4307 | /* AArch64 branch range is +-128MB. The value used is 1MB less. */ |
a06ea964 NC |
4308 | stub_group_size = 127 * 1024 * 1024; |
4309 | } | |
4310 | ||
4311 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
4312 | ||
4106101c MS |
4313 | (*htab->layout_sections_again) (); |
4314 | ||
5421cc6e MS |
4315 | if (htab->fix_erratum_835769) |
4316 | { | |
4317 | bfd *input_bfd; | |
4318 | ||
4319 | for (input_bfd = info->input_bfds; | |
4320 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
4321 | if (!_bfd_aarch64_erratum_835769_scan (input_bfd, info, | |
4322 | &num_erratum_835769_fixes)) | |
4323 | return FALSE; | |
4324 | ||
4106101c MS |
4325 | _bfd_aarch64_resize_stubs (htab); |
4326 | (*htab->layout_sections_again) (); | |
4327 | } | |
4328 | ||
4329 | if (htab->fix_erratum_843419) | |
4330 | { | |
4331 | bfd *input_bfd; | |
4332 | ||
4333 | for (input_bfd = info->input_bfds; | |
4334 | input_bfd != NULL; | |
4335 | input_bfd = input_bfd->link.next) | |
4336 | { | |
4337 | asection *section; | |
4338 | ||
4339 | for (section = input_bfd->sections; | |
4340 | section != NULL; | |
4341 | section = section->next) | |
4342 | if (!_bfd_aarch64_erratum_843419_scan (input_bfd, section, info)) | |
4343 | return FALSE; | |
4344 | } | |
4345 | ||
4346 | _bfd_aarch64_resize_stubs (htab); | |
4347 | (*htab->layout_sections_again) (); | |
5421cc6e MS |
4348 | } |
4349 | ||
a06ea964 NC |
4350 | while (1) |
4351 | { | |
4352 | bfd *input_bfd; | |
a06ea964 | 4353 | |
9b9971aa MS |
4354 | for (input_bfd = info->input_bfds; |
4355 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
a06ea964 NC |
4356 | { |
4357 | Elf_Internal_Shdr *symtab_hdr; | |
4358 | asection *section; | |
4359 | Elf_Internal_Sym *local_syms = NULL; | |
4360 | ||
4361 | /* We'll need the symbol table in a second. */ | |
4362 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
4363 | if (symtab_hdr->sh_info == 0) | |
4364 | continue; | |
4365 | ||
4366 | /* Walk over each section attached to the input bfd. */ | |
4367 | for (section = input_bfd->sections; | |
4368 | section != NULL; section = section->next) | |
4369 | { | |
4370 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
4371 | ||
4372 | /* If there aren't any relocs, then there's nothing more | |
4373 | to do. */ | |
4374 | if ((section->flags & SEC_RELOC) == 0 | |
4375 | || section->reloc_count == 0 | |
4376 | || (section->flags & SEC_CODE) == 0) | |
4377 | continue; | |
4378 | ||
4379 | /* If this section is a link-once section that will be | |
4380 | discarded, then don't create any stubs. */ | |
4381 | if (section->output_section == NULL | |
4382 | || section->output_section->owner != output_bfd) | |
4383 | continue; | |
4384 | ||
4385 | /* Get the relocs. */ | |
4386 | internal_relocs | |
4387 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, | |
4388 | NULL, info->keep_memory); | |
4389 | if (internal_relocs == NULL) | |
4390 | goto error_ret_free_local; | |
4391 | ||
4392 | /* Now examine each relocation. */ | |
4393 | irela = internal_relocs; | |
4394 | irelaend = irela + section->reloc_count; | |
4395 | for (; irela < irelaend; irela++) | |
4396 | { | |
4397 | unsigned int r_type, r_indx; | |
cec5225b YZ |
4398 | enum elf_aarch64_stub_type stub_type; |
4399 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
a06ea964 NC |
4400 | asection *sym_sec; |
4401 | bfd_vma sym_value; | |
4402 | bfd_vma destination; | |
cec5225b | 4403 | struct elf_aarch64_link_hash_entry *hash; |
a06ea964 NC |
4404 | const char *sym_name; |
4405 | char *stub_name; | |
4406 | const asection *id_sec; | |
4407 | unsigned char st_type; | |
4408 | bfd_size_type len; | |
4409 | ||
cec5225b YZ |
4410 | r_type = ELFNN_R_TYPE (irela->r_info); |
4411 | r_indx = ELFNN_R_SYM (irela->r_info); | |
a06ea964 NC |
4412 | |
4413 | if (r_type >= (unsigned int) R_AARCH64_end) | |
4414 | { | |
4415 | bfd_set_error (bfd_error_bad_value); | |
4416 | error_ret_free_internal: | |
4417 | if (elf_section_data (section)->relocs == NULL) | |
4418 | free (internal_relocs); | |
4419 | goto error_ret_free_local; | |
4420 | } | |
4421 | ||
4422 | /* Only look for stubs on unconditional branch and | |
4423 | branch and link instructions. */ | |
a6bb11b2 YZ |
4424 | if (r_type != (unsigned int) AARCH64_R (CALL26) |
4425 | && r_type != (unsigned int) AARCH64_R (JUMP26)) | |
a06ea964 NC |
4426 | continue; |
4427 | ||
4428 | /* Now determine the call target, its name, value, | |
4429 | section. */ | |
4430 | sym_sec = NULL; | |
4431 | sym_value = 0; | |
4432 | destination = 0; | |
4433 | hash = NULL; | |
4434 | sym_name = NULL; | |
4435 | if (r_indx < symtab_hdr->sh_info) | |
4436 | { | |
4437 | /* It's a local symbol. */ | |
4438 | Elf_Internal_Sym *sym; | |
4439 | Elf_Internal_Shdr *hdr; | |
4440 | ||
4441 | if (local_syms == NULL) | |
4442 | { | |
4443 | local_syms | |
4444 | = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4445 | if (local_syms == NULL) | |
4446 | local_syms | |
4447 | = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
4448 | symtab_hdr->sh_info, 0, | |
4449 | NULL, NULL, NULL); | |
4450 | if (local_syms == NULL) | |
4451 | goto error_ret_free_internal; | |
4452 | } | |
4453 | ||
4454 | sym = local_syms + r_indx; | |
4455 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
4456 | sym_sec = hdr->bfd_section; | |
4457 | if (!sym_sec) | |
4458 | /* This is an undefined symbol. It can never | |
4459 | be resolved. */ | |
4460 | continue; | |
4461 | ||
4462 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
4463 | sym_value = sym->st_value; | |
4464 | destination = (sym_value + irela->r_addend | |
4465 | + sym_sec->output_offset | |
4466 | + sym_sec->output_section->vma); | |
4467 | st_type = ELF_ST_TYPE (sym->st_info); | |
4468 | sym_name | |
4469 | = bfd_elf_string_from_elf_section (input_bfd, | |
4470 | symtab_hdr->sh_link, | |
4471 | sym->st_name); | |
4472 | } | |
4473 | else | |
4474 | { | |
4475 | int e_indx; | |
4476 | ||
4477 | e_indx = r_indx - symtab_hdr->sh_info; | |
cec5225b | 4478 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
4479 | elf_sym_hashes (input_bfd)[e_indx]); |
4480 | ||
4481 | while (hash->root.root.type == bfd_link_hash_indirect | |
4482 | || hash->root.root.type == bfd_link_hash_warning) | |
cec5225b | 4483 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
4484 | hash->root.root.u.i.link); |
4485 | ||
4486 | if (hash->root.root.type == bfd_link_hash_defined | |
4487 | || hash->root.root.type == bfd_link_hash_defweak) | |
4488 | { | |
cec5225b YZ |
4489 | struct elf_aarch64_link_hash_table *globals = |
4490 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
4491 | sym_sec = hash->root.root.u.def.section; |
4492 | sym_value = hash->root.root.u.def.value; | |
4493 | /* For a destination in a shared library, | |
4494 | use the PLT stub as target address to | |
4495 | decide whether a branch stub is | |
4496 | needed. */ | |
4497 | if (globals->root.splt != NULL && hash != NULL | |
4498 | && hash->root.plt.offset != (bfd_vma) - 1) | |
4499 | { | |
4500 | sym_sec = globals->root.splt; | |
4501 | sym_value = hash->root.plt.offset; | |
4502 | if (sym_sec->output_section != NULL) | |
4503 | destination = (sym_value | |
4504 | + sym_sec->output_offset | |
4505 | + | |
4506 | sym_sec->output_section->vma); | |
4507 | } | |
4508 | else if (sym_sec->output_section != NULL) | |
4509 | destination = (sym_value + irela->r_addend | |
4510 | + sym_sec->output_offset | |
4511 | + sym_sec->output_section->vma); | |
4512 | } | |
4513 | else if (hash->root.root.type == bfd_link_hash_undefined | |
4514 | || (hash->root.root.type | |
4515 | == bfd_link_hash_undefweak)) | |
4516 | { | |
4517 | /* For a shared library, use the PLT stub as | |
4518 | target address to decide whether a long | |
4519 | branch stub is needed. | |
4520 | For absolute code, they cannot be handled. */ | |
cec5225b YZ |
4521 | struct elf_aarch64_link_hash_table *globals = |
4522 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
4523 | |
4524 | if (globals->root.splt != NULL && hash != NULL | |
4525 | && hash->root.plt.offset != (bfd_vma) - 1) | |
4526 | { | |
4527 | sym_sec = globals->root.splt; | |
4528 | sym_value = hash->root.plt.offset; | |
4529 | if (sym_sec->output_section != NULL) | |
4530 | destination = (sym_value | |
4531 | + sym_sec->output_offset | |
4532 | + | |
4533 | sym_sec->output_section->vma); | |
4534 | } | |
4535 | else | |
4536 | continue; | |
4537 | } | |
4538 | else | |
4539 | { | |
4540 | bfd_set_error (bfd_error_bad_value); | |
4541 | goto error_ret_free_internal; | |
4542 | } | |
4543 | st_type = ELF_ST_TYPE (hash->root.type); | |
4544 | sym_name = hash->root.root.root.string; | |
4545 | } | |
4546 | ||
4547 | /* Determine what (if any) linker stub is needed. */ | |
9a228467 JW |
4548 | stub_type = aarch64_type_of_stub (section, irela, sym_sec, |
4549 | st_type, destination); | |
a06ea964 NC |
4550 | if (stub_type == aarch64_stub_none) |
4551 | continue; | |
4552 | ||
4553 | /* Support for grouping stub sections. */ | |
4554 | id_sec = htab->stub_group[section->id].link_sec; | |
4555 | ||
4556 | /* Get the name of this stub. */ | |
cec5225b | 4557 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, hash, |
a06ea964 NC |
4558 | irela); |
4559 | if (!stub_name) | |
4560 | goto error_ret_free_internal; | |
4561 | ||
4562 | stub_entry = | |
4563 | aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
4564 | stub_name, FALSE, FALSE); | |
4565 | if (stub_entry != NULL) | |
4566 | { | |
4567 | /* The proper stub has already been created. */ | |
4568 | free (stub_name); | |
3da64fe4 RA |
4569 | /* Always update this stub's target since it may have |
4570 | changed after layout. */ | |
4571 | stub_entry->target_value = sym_value + irela->r_addend; | |
a06ea964 NC |
4572 | continue; |
4573 | } | |
4574 | ||
ef857521 MS |
4575 | stub_entry = _bfd_aarch64_add_stub_entry_in_group |
4576 | (stub_name, section, htab); | |
a06ea964 NC |
4577 | if (stub_entry == NULL) |
4578 | { | |
4579 | free (stub_name); | |
4580 | goto error_ret_free_internal; | |
4581 | } | |
4582 | ||
2f340668 | 4583 | stub_entry->target_value = sym_value + irela->r_addend; |
a06ea964 NC |
4584 | stub_entry->target_section = sym_sec; |
4585 | stub_entry->stub_type = stub_type; | |
4586 | stub_entry->h = hash; | |
4587 | stub_entry->st_type = st_type; | |
4588 | ||
4589 | if (sym_name == NULL) | |
4590 | sym_name = "unnamed"; | |
4591 | len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name); | |
4592 | stub_entry->output_name = bfd_alloc (htab->stub_bfd, len); | |
4593 | if (stub_entry->output_name == NULL) | |
4594 | { | |
4595 | free (stub_name); | |
4596 | goto error_ret_free_internal; | |
4597 | } | |
4598 | ||
4599 | snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME, | |
4600 | sym_name); | |
4601 | ||
4602 | stub_changed = TRUE; | |
4603 | } | |
4604 | ||
4605 | /* We're done with the internal relocs, free them. */ | |
4606 | if (elf_section_data (section)->relocs == NULL) | |
4607 | free (internal_relocs); | |
4608 | } | |
4609 | } | |
4610 | ||
4611 | if (!stub_changed) | |
4612 | break; | |
4613 | ||
13f622ec | 4614 | _bfd_aarch64_resize_stubs (htab); |
a06ea964 NC |
4615 | |
4616 | /* Ask the linker to do its stuff. */ | |
4617 | (*htab->layout_sections_again) (); | |
4618 | stub_changed = FALSE; | |
4619 | } | |
4620 | ||
4621 | return TRUE; | |
4622 | ||
4623 | error_ret_free_local: | |
4624 | return FALSE; | |
4625 | } | |
4626 | ||
4627 | /* Build all the stubs associated with the current output file. The | |
4628 | stubs are kept in a hash table attached to the main linker hash | |
4629 | table. We also set up the .plt entries for statically linked PIC | |
4630 | functions here. This function is called via aarch64_elf_finish in the | |
4631 | linker. */ | |
4632 | ||
4633 | bfd_boolean | |
cec5225b | 4634 | elfNN_aarch64_build_stubs (struct bfd_link_info *info) |
a06ea964 NC |
4635 | { |
4636 | asection *stub_sec; | |
4637 | struct bfd_hash_table *table; | |
cec5225b | 4638 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 4639 | |
cec5225b | 4640 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
4641 | |
4642 | for (stub_sec = htab->stub_bfd->sections; | |
4643 | stub_sec != NULL; stub_sec = stub_sec->next) | |
4644 | { | |
4645 | bfd_size_type size; | |
4646 | ||
4647 | /* Ignore non-stub sections. */ | |
4648 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
4649 | continue; | |
4650 | ||
4651 | /* Allocate memory to hold the linker stubs. */ | |
4652 | size = stub_sec->size; | |
4653 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); | |
4654 | if (stub_sec->contents == NULL && size != 0) | |
4655 | return FALSE; | |
4656 | stub_sec->size = 0; | |
61865519 | 4657 | |
9a2ebffd JW |
4658 | /* Add a branch around the stub section, and a nop, to keep it 8 byte |
4659 | aligned, as long branch stubs contain a 64-bit address. */ | |
61865519 | 4660 | bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents); |
9a2ebffd JW |
4661 | bfd_putl32 (INSN_NOP, stub_sec->contents + 4); |
4662 | stub_sec->size += 8; | |
a06ea964 NC |
4663 | } |
4664 | ||
4665 | /* Build the stubs as directed by the stub hash table. */ | |
4666 | table = &htab->stub_hash_table; | |
4667 | bfd_hash_traverse (table, aarch64_build_one_stub, info); | |
4668 | ||
4669 | return TRUE; | |
4670 | } | |
4671 | ||
4672 | ||
4673 | /* Add an entry to the code/data map for section SEC. */ | |
4674 | ||
4675 | static void | |
cec5225b | 4676 | elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma) |
a06ea964 NC |
4677 | { |
4678 | struct _aarch64_elf_section_data *sec_data = | |
cec5225b | 4679 | elf_aarch64_section_data (sec); |
a06ea964 NC |
4680 | unsigned int newidx; |
4681 | ||
4682 | if (sec_data->map == NULL) | |
4683 | { | |
cec5225b | 4684 | sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
4685 | sec_data->mapcount = 0; |
4686 | sec_data->mapsize = 1; | |
4687 | } | |
4688 | ||
4689 | newidx = sec_data->mapcount++; | |
4690 | ||
4691 | if (sec_data->mapcount > sec_data->mapsize) | |
4692 | { | |
4693 | sec_data->mapsize *= 2; | |
4694 | sec_data->map = bfd_realloc_or_free | |
cec5225b | 4695 | (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
4696 | } |
4697 | ||
4698 | if (sec_data->map) | |
4699 | { | |
4700 | sec_data->map[newidx].vma = vma; | |
4701 | sec_data->map[newidx].type = type; | |
4702 | } | |
4703 | } | |
4704 | ||
4705 | ||
4706 | /* Initialise maps of insn/data for input BFDs. */ | |
4707 | void | |
cec5225b | 4708 | bfd_elfNN_aarch64_init_maps (bfd *abfd) |
a06ea964 NC |
4709 | { |
4710 | Elf_Internal_Sym *isymbuf; | |
4711 | Elf_Internal_Shdr *hdr; | |
4712 | unsigned int i, localsyms; | |
4713 | ||
4714 | /* Make sure that we are dealing with an AArch64 elf binary. */ | |
4715 | if (!is_aarch64_elf (abfd)) | |
4716 | return; | |
4717 | ||
4718 | if ((abfd->flags & DYNAMIC) != 0) | |
68fcca92 | 4719 | return; |
a06ea964 NC |
4720 | |
4721 | hdr = &elf_symtab_hdr (abfd); | |
4722 | localsyms = hdr->sh_info; | |
4723 | ||
4724 | /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field | |
4725 | should contain the number of local symbols, which should come before any | |
4726 | global symbols. Mapping symbols are always local. */ | |
4727 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL); | |
4728 | ||
4729 | /* No internal symbols read? Skip this BFD. */ | |
4730 | if (isymbuf == NULL) | |
4731 | return; | |
4732 | ||
4733 | for (i = 0; i < localsyms; i++) | |
4734 | { | |
4735 | Elf_Internal_Sym *isym = &isymbuf[i]; | |
4736 | asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4737 | const char *name; | |
4738 | ||
4739 | if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL) | |
4740 | { | |
4741 | name = bfd_elf_string_from_elf_section (abfd, | |
4742 | hdr->sh_link, | |
4743 | isym->st_name); | |
4744 | ||
4745 | if (bfd_is_aarch64_special_symbol_name | |
4746 | (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP)) | |
cec5225b | 4747 | elfNN_aarch64_section_map_add (sec, name[1], isym->st_value); |
a06ea964 NC |
4748 | } |
4749 | } | |
4750 | } | |
4751 | ||
37c18eed SD |
4752 | static void |
4753 | setup_plt_values (struct bfd_link_info *link_info, | |
4754 | aarch64_plt_type plt_type) | |
4755 | { | |
4756 | struct elf_aarch64_link_hash_table *globals; | |
4757 | globals = elf_aarch64_hash_table (link_info); | |
4758 | ||
1dbade74 SD |
4759 | if (plt_type == PLT_BTI_PAC) |
4760 | { | |
4761 | globals->plt_header_size = PLT_BTI_PAC_ENTRY_SIZE; | |
4762 | globals->plt0_entry = elfNN_aarch64_small_plt0_bti_pac_entry; | |
4763 | globals->tlsdesc_plt_entry_size = PLT_BTI_TLSDESC_ENTRY_SIZE; | |
4764 | ||
4765 | /* Only in ET_EXEC we need PLTn with BTI. */ | |
4766 | if (bfd_link_pde (link_info)) | |
4767 | { | |
4768 | globals->plt_entry_size = PLT_BTI_PAC_SMALL_ENTRY_SIZE; | |
4769 | globals->plt_entry = elfNN_aarch64_small_plt_bti_pac_entry; | |
4770 | } | |
4771 | else | |
4772 | { | |
4773 | globals->plt_entry_size = PLT_PAC_SMALL_ENTRY_SIZE; | |
4774 | globals->plt_entry = elfNN_aarch64_small_plt_pac_entry; | |
4775 | } | |
4776 | } | |
4777 | else if (plt_type == PLT_BTI) | |
37c18eed SD |
4778 | { |
4779 | globals->plt_header_size = PLT_BTI_ENTRY_SIZE; | |
4780 | globals->plt0_entry = elfNN_aarch64_small_plt0_bti_entry; | |
4781 | globals->tlsdesc_plt_entry_size = PLT_BTI_TLSDESC_ENTRY_SIZE; | |
4782 | ||
4783 | /* Only in ET_EXEC we need PLTn with BTI. */ | |
4784 | if (bfd_link_pde (link_info)) | |
4785 | { | |
4786 | globals->plt_entry_size = PLT_BTI_SMALL_ENTRY_SIZE; | |
4787 | globals->plt_entry = elfNN_aarch64_small_plt_bti_entry; | |
4788 | } | |
4789 | } | |
1dbade74 SD |
4790 | else if (plt_type == PLT_PAC) |
4791 | { | |
4792 | globals->plt_header_size = PLT_PAC_ENTRY_SIZE; | |
4793 | globals->plt0_entry = elfNN_aarch64_small_plt0_pac_entry; | |
4794 | globals->tlsdesc_plt_entry_size = PLT_TLSDESC_ENTRY_SIZE; | |
4795 | globals->plt_entry_size = PLT_PAC_SMALL_ENTRY_SIZE; | |
4796 | globals->plt_entry = elfNN_aarch64_small_plt_pac_entry; | |
4797 | } | |
37c18eed SD |
4798 | } |
4799 | ||
a06ea964 NC |
4800 | /* Set option values needed during linking. */ |
4801 | void | |
cec5225b | 4802 | bfd_elfNN_aarch64_set_options (struct bfd *output_bfd, |
a06ea964 NC |
4803 | struct bfd_link_info *link_info, |
4804 | int no_enum_warn, | |
68fcca92 | 4805 | int no_wchar_warn, int pic_veneer, |
4106101c | 4806 | int fix_erratum_835769, |
1f56df9d | 4807 | int fix_erratum_843419, |
37c18eed SD |
4808 | int no_apply_dynamic_relocs, |
4809 | aarch64_bti_pac_info bp_info) | |
a06ea964 | 4810 | { |
cec5225b | 4811 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 4812 | |
cec5225b | 4813 | globals = elf_aarch64_hash_table (link_info); |
a06ea964 | 4814 | globals->pic_veneer = pic_veneer; |
68fcca92 | 4815 | globals->fix_erratum_835769 = fix_erratum_835769; |
4106101c MS |
4816 | globals->fix_erratum_843419 = fix_erratum_843419; |
4817 | globals->fix_erratum_843419_adr = TRUE; | |
1f56df9d | 4818 | globals->no_apply_dynamic_relocs = no_apply_dynamic_relocs; |
a06ea964 NC |
4819 | |
4820 | BFD_ASSERT (is_aarch64_elf (output_bfd)); | |
4821 | elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn; | |
4822 | elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn; | |
37c18eed SD |
4823 | |
4824 | switch (bp_info.bti_type) | |
4825 | { | |
4826 | case BTI_WARN: | |
4827 | elf_aarch64_tdata (output_bfd)->no_bti_warn = 0; | |
4828 | elf_aarch64_tdata (output_bfd)->gnu_and_prop | |
4829 | |= GNU_PROPERTY_AARCH64_FEATURE_1_BTI; | |
4830 | break; | |
4831 | ||
4832 | default: | |
4833 | break; | |
4834 | } | |
4835 | elf_aarch64_tdata (output_bfd)->plt_type = bp_info.plt_type; | |
4836 | setup_plt_values (link_info, bp_info.plt_type); | |
a06ea964 NC |
4837 | } |
4838 | ||
a06ea964 NC |
4839 | static bfd_vma |
4840 | aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h, | |
cec5225b | 4841 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
4842 | *globals, struct bfd_link_info *info, |
4843 | bfd_vma value, bfd *output_bfd, | |
4844 | bfd_boolean *unresolved_reloc_p) | |
4845 | { | |
4846 | bfd_vma off = (bfd_vma) - 1; | |
4847 | asection *basegot = globals->root.sgot; | |
4848 | bfd_boolean dyn = globals->root.dynamic_sections_created; | |
4849 | ||
4850 | if (h != NULL) | |
4851 | { | |
a6bb11b2 | 4852 | BFD_ASSERT (basegot != NULL); |
a06ea964 NC |
4853 | off = h->got.offset; |
4854 | BFD_ASSERT (off != (bfd_vma) - 1); | |
0e1862bb L |
4855 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h) |
4856 | || (bfd_link_pic (info) | |
a06ea964 NC |
4857 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
4858 | || (ELF_ST_VISIBILITY (h->other) | |
4859 | && h->root.type == bfd_link_hash_undefweak)) | |
4860 | { | |
4861 | /* This is actually a static link, or it is a -Bsymbolic link | |
4862 | and the symbol is defined locally. We must initialize this | |
4863 | entry in the global offset table. Since the offset must | |
a6bb11b2 YZ |
4864 | always be a multiple of 8 (4 in the case of ILP32), we use |
4865 | the least significant bit to record whether we have | |
4866 | initialized it already. | |
a06ea964 NC |
4867 | When doing a dynamic link, we create a .rel(a).got relocation |
4868 | entry to initialize the value. This is done in the | |
4869 | finish_dynamic_symbol routine. */ | |
4870 | if ((off & 1) != 0) | |
4871 | off &= ~1; | |
4872 | else | |
4873 | { | |
cec5225b | 4874 | bfd_put_NN (output_bfd, value, basegot->contents + off); |
a06ea964 NC |
4875 | h->got.offset |= 1; |
4876 | } | |
4877 | } | |
4878 | else | |
4879 | *unresolved_reloc_p = FALSE; | |
4880 | ||
4881 | off = off + basegot->output_section->vma + basegot->output_offset; | |
4882 | } | |
4883 | ||
4884 | return off; | |
4885 | } | |
4886 | ||
4887 | /* Change R_TYPE to a more efficient access model where possible, | |
4888 | return the new reloc type. */ | |
4889 | ||
a6bb11b2 YZ |
4890 | static bfd_reloc_code_real_type |
4891 | aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type, | |
a06ea964 NC |
4892 | struct elf_link_hash_entry *h) |
4893 | { | |
4894 | bfd_boolean is_local = h == NULL; | |
a6bb11b2 | 4895 | |
a06ea964 NC |
4896 | switch (r_type) |
4897 | { | |
a6bb11b2 | 4898 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 4899 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a6bb11b2 YZ |
4900 | return (is_local |
4901 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4902 | : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21); | |
4903 | ||
389b8029 MS |
4904 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
4905 | return (is_local | |
4906 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4907 | : r_type); | |
4908 | ||
1ada945d MS |
4909 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
4910 | return (is_local | |
4911 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4912 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4913 | ||
0484b454 RL |
4914 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
4915 | return (is_local | |
4916 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4917 | : BFD_RELOC_AARCH64_NONE); | |
4918 | ||
4919 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
4920 | return (is_local | |
4921 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC | |
4922 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC); | |
4923 | ||
4924 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
4925 | return (is_local | |
4926 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 | |
4927 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1); | |
4928 | ||
a6bb11b2 | 4929 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
ce336788 | 4930 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 YZ |
4931 | return (is_local |
4932 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4933 | : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC); | |
4934 | ||
4935 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: | |
4936 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type; | |
4937 | ||
4938 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
4939 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type; | |
4940 | ||
043bf05a MS |
4941 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
4942 | return r_type; | |
4943 | ||
3c12b054 MS |
4944 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
4945 | return (is_local | |
4946 | ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 | |
4947 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4948 | ||
0484b454 | 4949 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
f955cccf | 4950 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 4951 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a06ea964 | 4952 | /* Instructions with these relocations will become NOPs. */ |
a6bb11b2 YZ |
4953 | return BFD_RELOC_AARCH64_NONE; |
4954 | ||
259364ad JW |
4955 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
4956 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: | |
4957 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: | |
4958 | return is_local ? BFD_RELOC_AARCH64_NONE : r_type; | |
4959 | ||
ac734732 RL |
4960 | #if ARCH_SIZE == 64 |
4961 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: | |
4962 | return is_local | |
4963 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC | |
4964 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC; | |
4965 | ||
4966 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: | |
4967 | return is_local | |
4968 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 | |
4969 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1; | |
4970 | #endif | |
4971 | ||
a6bb11b2 YZ |
4972 | default: |
4973 | break; | |
a06ea964 NC |
4974 | } |
4975 | ||
4976 | return r_type; | |
4977 | } | |
4978 | ||
4979 | static unsigned int | |
a6bb11b2 | 4980 | aarch64_reloc_got_type (bfd_reloc_code_real_type r_type) |
a06ea964 NC |
4981 | { |
4982 | switch (r_type) | |
4983 | { | |
a6bb11b2 YZ |
4984 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
4985 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 4986 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 4987 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 4988 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 4989 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 4990 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 4991 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 4992 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
a06ea964 NC |
4993 | return GOT_NORMAL; |
4994 | ||
ce336788 | 4995 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 4996 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 4997 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 4998 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 4999 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
73f925cc | 5000 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 5001 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 5002 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
5003 | return GOT_TLS_GD; |
5004 | ||
0484b454 | 5005 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
f955cccf | 5006 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 5007 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 5008 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 5009 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a6bb11b2 | 5010 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
f955cccf | 5011 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
1ada945d | 5012 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
5013 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
5014 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
5015 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a06ea964 NC |
5016 | return GOT_TLSDESC_GD; |
5017 | ||
a6bb11b2 | 5018 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 5019 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 5020 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 5021 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
5022 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
5023 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
a06ea964 NC |
5024 | return GOT_TLS_IE; |
5025 | ||
a6bb11b2 YZ |
5026 | default: |
5027 | break; | |
a06ea964 NC |
5028 | } |
5029 | return GOT_UNKNOWN; | |
5030 | } | |
5031 | ||
5032 | static bfd_boolean | |
5033 | aarch64_can_relax_tls (bfd *input_bfd, | |
5034 | struct bfd_link_info *info, | |
a6bb11b2 | 5035 | bfd_reloc_code_real_type r_type, |
a06ea964 NC |
5036 | struct elf_link_hash_entry *h, |
5037 | unsigned long r_symndx) | |
5038 | { | |
5039 | unsigned int symbol_got_type; | |
5040 | unsigned int reloc_got_type; | |
5041 | ||
9331eea1 | 5042 | if (! IS_AARCH64_TLS_RELAX_RELOC (r_type)) |
a06ea964 NC |
5043 | return FALSE; |
5044 | ||
cec5225b | 5045 | symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx); |
a06ea964 NC |
5046 | reloc_got_type = aarch64_reloc_got_type (r_type); |
5047 | ||
5048 | if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type)) | |
5049 | return TRUE; | |
5050 | ||
6dda7875 | 5051 | if (!bfd_link_executable (info)) |
a06ea964 NC |
5052 | return FALSE; |
5053 | ||
5054 | if (h && h->root.type == bfd_link_hash_undefweak) | |
5055 | return FALSE; | |
5056 | ||
5057 | return TRUE; | |
5058 | } | |
5059 | ||
a6bb11b2 YZ |
5060 | /* Given the relocation code R_TYPE, return the relaxed bfd reloc |
5061 | enumerator. */ | |
5062 | ||
5063 | static bfd_reloc_code_real_type | |
a06ea964 NC |
5064 | aarch64_tls_transition (bfd *input_bfd, |
5065 | struct bfd_link_info *info, | |
5066 | unsigned int r_type, | |
5067 | struct elf_link_hash_entry *h, | |
5068 | unsigned long r_symndx) | |
5069 | { | |
a6bb11b2 | 5070 | bfd_reloc_code_real_type bfd_r_type |
0aa13fee | 5071 | = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
a06ea964 | 5072 | |
a6bb11b2 YZ |
5073 | if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx)) |
5074 | return bfd_r_type; | |
5075 | ||
5076 | return aarch64_tls_transition_without_check (bfd_r_type, h); | |
a06ea964 NC |
5077 | } |
5078 | ||
5079 | /* Return the base VMA address which should be subtracted from real addresses | |
a6bb11b2 | 5080 | when resolving R_AARCH64_TLS_DTPREL relocation. */ |
a06ea964 NC |
5081 | |
5082 | static bfd_vma | |
5083 | dtpoff_base (struct bfd_link_info *info) | |
5084 | { | |
5085 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
5086 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); | |
5087 | return elf_hash_table (info)->tls_sec->vma; | |
5088 | } | |
5089 | ||
a06ea964 NC |
5090 | /* Return the base VMA address which should be subtracted from real addresses |
5091 | when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */ | |
5092 | ||
5093 | static bfd_vma | |
5094 | tpoff_base (struct bfd_link_info *info) | |
5095 | { | |
5096 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
5097 | ||
5098 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
ac21917f | 5099 | BFD_ASSERT (htab->tls_sec != NULL); |
a06ea964 NC |
5100 | |
5101 | bfd_vma base = align_power ((bfd_vma) TCB_SIZE, | |
5102 | htab->tls_sec->alignment_power); | |
5103 | return htab->tls_sec->vma - base; | |
5104 | } | |
5105 | ||
5106 | static bfd_vma * | |
5107 | symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5108 | unsigned long r_symndx) | |
5109 | { | |
5110 | /* Calculate the address of the GOT entry for symbol | |
5111 | referred to in h. */ | |
5112 | if (h != NULL) | |
5113 | return &h->got.offset; | |
5114 | else | |
5115 | { | |
5116 | /* local symbol */ | |
5117 | struct elf_aarch64_local_symbol *l; | |
5118 | ||
cec5225b | 5119 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
5120 | return &l[r_symndx].got_offset; |
5121 | } | |
5122 | } | |
5123 | ||
5124 | static void | |
5125 | symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5126 | unsigned long r_symndx) | |
5127 | { | |
5128 | bfd_vma *p; | |
5129 | p = symbol_got_offset_ref (input_bfd, h, r_symndx); | |
5130 | *p |= 1; | |
5131 | } | |
5132 | ||
5133 | static int | |
5134 | symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5135 | unsigned long r_symndx) | |
5136 | { | |
5137 | bfd_vma value; | |
5138 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
5139 | return value & 1; | |
5140 | } | |
5141 | ||
5142 | static bfd_vma | |
5143 | symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5144 | unsigned long r_symndx) | |
5145 | { | |
5146 | bfd_vma value; | |
5147 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
5148 | value &= ~1; | |
5149 | return value; | |
5150 | } | |
5151 | ||
5152 | static bfd_vma * | |
5153 | symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5154 | unsigned long r_symndx) | |
5155 | { | |
5156 | /* Calculate the address of the GOT entry for symbol | |
5157 | referred to in h. */ | |
5158 | if (h != NULL) | |
5159 | { | |
cec5225b YZ |
5160 | struct elf_aarch64_link_hash_entry *eh; |
5161 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
5162 | return &eh->tlsdesc_got_jump_table_offset; |
5163 | } | |
5164 | else | |
5165 | { | |
5166 | /* local symbol */ | |
5167 | struct elf_aarch64_local_symbol *l; | |
5168 | ||
cec5225b | 5169 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
5170 | return &l[r_symndx].tlsdesc_got_jump_table_offset; |
5171 | } | |
5172 | } | |
5173 | ||
5174 | static void | |
5175 | symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5176 | unsigned long r_symndx) | |
5177 | { | |
5178 | bfd_vma *p; | |
5179 | p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
5180 | *p |= 1; | |
5181 | } | |
5182 | ||
5183 | static int | |
5184 | symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd, | |
5185 | struct elf_link_hash_entry *h, | |
5186 | unsigned long r_symndx) | |
5187 | { | |
5188 | bfd_vma value; | |
5189 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
5190 | return value & 1; | |
5191 | } | |
5192 | ||
5193 | static bfd_vma | |
5194 | symbol_tlsdesc_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5195 | unsigned long r_symndx) | |
5196 | { | |
5197 | bfd_vma value; | |
5198 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
5199 | value &= ~1; | |
5200 | return value; | |
5201 | } | |
5202 | ||
68fcca92 JW |
5203 | /* Data for make_branch_to_erratum_835769_stub(). */ |
5204 | ||
5205 | struct erratum_835769_branch_to_stub_data | |
5206 | { | |
4106101c | 5207 | struct bfd_link_info *info; |
68fcca92 JW |
5208 | asection *output_section; |
5209 | bfd_byte *contents; | |
5210 | }; | |
5211 | ||
5212 | /* Helper to insert branches to erratum 835769 stubs in the right | |
5213 | places for a particular section. */ | |
5214 | ||
5215 | static bfd_boolean | |
5216 | make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry, | |
5217 | void *in_arg) | |
5218 | { | |
5219 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
5220 | struct erratum_835769_branch_to_stub_data *data; | |
5221 | bfd_byte *contents; | |
5222 | unsigned long branch_insn = 0; | |
5223 | bfd_vma veneered_insn_loc, veneer_entry_loc; | |
5224 | bfd_signed_vma branch_offset; | |
5225 | unsigned int target; | |
5226 | bfd *abfd; | |
5227 | ||
5228 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
5229 | data = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
5230 | ||
5231 | if (stub_entry->target_section != data->output_section | |
5232 | || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer) | |
5233 | return TRUE; | |
5234 | ||
5235 | contents = data->contents; | |
5236 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
5237 | + stub_entry->target_section->output_offset | |
5238 | + stub_entry->target_value; | |
5239 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
5240 | + stub_entry->stub_sec->output_offset | |
5241 | + stub_entry->stub_offset; | |
5242 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
5243 | ||
5244 | abfd = stub_entry->target_section->owner; | |
5245 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4eca0228 | 5246 | _bfd_error_handler |
90b6238f | 5247 | (_("%pB: error: erratum 835769 stub out " |
4eca0228 | 5248 | "of range (input file too large)"), abfd); |
68fcca92 JW |
5249 | |
5250 | target = stub_entry->target_value; | |
5251 | branch_insn = 0x14000000; | |
5252 | branch_offset >>= 2; | |
5253 | branch_offset &= 0x3ffffff; | |
5254 | branch_insn |= branch_offset; | |
5255 | bfd_putl32 (branch_insn, &contents[target]); | |
5256 | ||
5257 | return TRUE; | |
5258 | } | |
5259 | ||
4106101c MS |
5260 | |
5261 | static bfd_boolean | |
5262 | _bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry, | |
5263 | void *in_arg) | |
5264 | { | |
5265 | struct elf_aarch64_stub_hash_entry *stub_entry | |
5266 | = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
5267 | struct erratum_835769_branch_to_stub_data *data | |
5268 | = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
5269 | struct bfd_link_info *info; | |
5270 | struct elf_aarch64_link_hash_table *htab; | |
5271 | bfd_byte *contents; | |
5272 | asection *section; | |
5273 | bfd *abfd; | |
5274 | bfd_vma place; | |
5275 | uint32_t insn; | |
5276 | ||
5277 | info = data->info; | |
5278 | contents = data->contents; | |
5279 | section = data->output_section; | |
5280 | ||
5281 | htab = elf_aarch64_hash_table (info); | |
5282 | ||
5283 | if (stub_entry->target_section != section | |
5284 | || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer) | |
5285 | return TRUE; | |
5286 | ||
5287 | insn = bfd_getl32 (contents + stub_entry->target_value); | |
5288 | bfd_putl32 (insn, | |
5289 | stub_entry->stub_sec->contents + stub_entry->stub_offset); | |
5290 | ||
5291 | place = (section->output_section->vma + section->output_offset | |
5292 | + stub_entry->adrp_offset); | |
5293 | insn = bfd_getl32 (contents + stub_entry->adrp_offset); | |
5294 | ||
9fca35fc | 5295 | if (!_bfd_aarch64_adrp_p (insn)) |
4106101c MS |
5296 | abort (); |
5297 | ||
5298 | bfd_signed_vma imm = | |
5299 | (_bfd_aarch64_sign_extend | |
5300 | ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33) | |
5301 | - (place & 0xfff)); | |
5302 | ||
5303 | if (htab->fix_erratum_843419_adr | |
5304 | && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM)) | |
5305 | { | |
5306 | insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm) | |
5307 | | AARCH64_RT (insn)); | |
5308 | bfd_putl32 (insn, contents + stub_entry->adrp_offset); | |
5309 | } | |
5310 | else | |
5311 | { | |
5312 | bfd_vma veneered_insn_loc; | |
5313 | bfd_vma veneer_entry_loc; | |
5314 | bfd_signed_vma branch_offset; | |
5315 | uint32_t branch_insn; | |
5316 | ||
5317 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
5318 | + stub_entry->target_section->output_offset | |
5319 | + stub_entry->target_value; | |
5320 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
5321 | + stub_entry->stub_sec->output_offset | |
5322 | + stub_entry->stub_offset; | |
5323 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
5324 | ||
5325 | abfd = stub_entry->target_section->owner; | |
5326 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4eca0228 | 5327 | _bfd_error_handler |
90b6238f | 5328 | (_("%pB: error: erratum 843419 stub out " |
4106101c MS |
5329 | "of range (input file too large)"), abfd); |
5330 | ||
5331 | branch_insn = 0x14000000; | |
5332 | branch_offset >>= 2; | |
5333 | branch_offset &= 0x3ffffff; | |
5334 | branch_insn |= branch_offset; | |
5335 | bfd_putl32 (branch_insn, contents + stub_entry->target_value); | |
5336 | } | |
5337 | return TRUE; | |
5338 | } | |
5339 | ||
5340 | ||
68fcca92 JW |
5341 | static bfd_boolean |
5342 | elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, | |
5343 | struct bfd_link_info *link_info, | |
5344 | asection *sec, | |
5345 | bfd_byte *contents) | |
5346 | ||
5347 | { | |
5348 | struct elf_aarch64_link_hash_table *globals = | |
f872121a | 5349 | elf_aarch64_hash_table (link_info); |
68fcca92 JW |
5350 | |
5351 | if (globals == NULL) | |
5352 | return FALSE; | |
5353 | ||
5354 | /* Fix code to point to erratum 835769 stubs. */ | |
5355 | if (globals->fix_erratum_835769) | |
5356 | { | |
5357 | struct erratum_835769_branch_to_stub_data data; | |
5358 | ||
4106101c | 5359 | data.info = link_info; |
68fcca92 JW |
5360 | data.output_section = sec; |
5361 | data.contents = contents; | |
5362 | bfd_hash_traverse (&globals->stub_hash_table, | |
5363 | make_branch_to_erratum_835769_stub, &data); | |
5364 | } | |
5365 | ||
4106101c MS |
5366 | if (globals->fix_erratum_843419) |
5367 | { | |
5368 | struct erratum_835769_branch_to_stub_data data; | |
5369 | ||
5370 | data.info = link_info; | |
5371 | data.output_section = sec; | |
5372 | data.contents = contents; | |
5373 | bfd_hash_traverse (&globals->stub_hash_table, | |
5374 | _bfd_aarch64_erratum_843419_branch_to_stub, &data); | |
5375 | } | |
5376 | ||
68fcca92 JW |
5377 | return FALSE; |
5378 | } | |
5379 | ||
2aff25ba JW |
5380 | /* Return TRUE if RELOC is a relocation against the base of GOT table. */ |
5381 | ||
5382 | static bfd_boolean | |
5383 | aarch64_relocation_aginst_gp_p (bfd_reloc_code_real_type reloc) | |
5384 | { | |
5385 | return (reloc == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14 | |
5386 | || reloc == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 | |
5387 | || reloc == BFD_RELOC_AARCH64_LD64_GOTOFF_LO15 | |
5388 | || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC | |
5389 | || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G1); | |
5390 | } | |
5391 | ||
4e7fbb34 JW |
5392 | /* Perform a relocation as part of a final link. The input relocation type |
5393 | should be TLS relaxed. */ | |
5394 | ||
a06ea964 | 5395 | static bfd_reloc_status_type |
cec5225b | 5396 | elfNN_aarch64_final_link_relocate (reloc_howto_type *howto, |
a06ea964 NC |
5397 | bfd *input_bfd, |
5398 | bfd *output_bfd, | |
5399 | asection *input_section, | |
5400 | bfd_byte *contents, | |
5401 | Elf_Internal_Rela *rel, | |
5402 | bfd_vma value, | |
5403 | struct bfd_link_info *info, | |
5404 | asection *sym_sec, | |
5405 | struct elf_link_hash_entry *h, | |
5406 | bfd_boolean *unresolved_reloc_p, | |
5407 | bfd_boolean save_addend, | |
1419bbe5 WN |
5408 | bfd_vma *saved_addend, |
5409 | Elf_Internal_Sym *sym) | |
a06ea964 | 5410 | { |
1419bbe5 | 5411 | Elf_Internal_Shdr *symtab_hdr; |
a06ea964 | 5412 | unsigned int r_type = howto->type; |
a6bb11b2 YZ |
5413 | bfd_reloc_code_real_type bfd_r_type |
5414 | = elfNN_aarch64_bfd_reloc_from_howto (howto); | |
a06ea964 NC |
5415 | unsigned long r_symndx; |
5416 | bfd_byte *hit_data = contents + rel->r_offset; | |
96d01d93 | 5417 | bfd_vma place, off, got_entry_addr = 0; |
a06ea964 | 5418 | bfd_signed_vma signed_addend; |
cec5225b | 5419 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 5420 | bfd_boolean weak_undef_p; |
ff07562f | 5421 | bfd_boolean relative_reloc; |
b53b1bed | 5422 | asection *base_got; |
ff07562f | 5423 | bfd_vma orig_value = value; |
ddb7fd0f | 5424 | bfd_boolean resolved_to_zero; |
0c1ded8d | 5425 | bfd_boolean abs_symbol_p; |
a06ea964 | 5426 | |
cec5225b | 5427 | globals = elf_aarch64_hash_table (info); |
a06ea964 | 5428 | |
1419bbe5 WN |
5429 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5430 | ||
a06ea964 NC |
5431 | BFD_ASSERT (is_aarch64_elf (input_bfd)); |
5432 | ||
cec5225b | 5433 | r_symndx = ELFNN_R_SYM (rel->r_info); |
a06ea964 | 5434 | |
a06ea964 NC |
5435 | place = input_section->output_section->vma |
5436 | + input_section->output_offset + rel->r_offset; | |
5437 | ||
5438 | /* Get addend, accumulating the addend for consecutive relocs | |
5439 | which refer to the same offset. */ | |
5440 | signed_addend = saved_addend ? *saved_addend : 0; | |
5441 | signed_addend += rel->r_addend; | |
5442 | ||
5443 | weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak | |
5444 | : bfd_is_und_section (sym_sec)); | |
c691de6a | 5445 | abs_symbol_p = h != NULL && bfd_is_abs_symbol (&h->root); |
0c1ded8d | 5446 | |
a6bb11b2 | 5447 | |
1419bbe5 WN |
5448 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
5449 | it here if it is defined in a non-shared object. */ | |
5450 | if (h != NULL | |
5451 | && h->type == STT_GNU_IFUNC | |
5452 | && h->def_regular) | |
5453 | { | |
5454 | asection *plt; | |
5455 | const char *name; | |
99ad26cb | 5456 | bfd_vma addend = 0; |
1419bbe5 | 5457 | |
545bc2b3 SN |
5458 | if ((input_section->flags & SEC_ALLOC) == 0) |
5459 | { | |
f657f8c4 NC |
5460 | /* If this is a SHT_NOTE section without SHF_ALLOC, treat |
5461 | STT_GNU_IFUNC symbol as STT_FUNC. */ | |
5462 | if (elf_section_type (input_section) == SHT_NOTE) | |
5463 | goto skip_ifunc; | |
5464 | ||
545bc2b3 SN |
5465 | /* Dynamic relocs are not propagated for SEC_DEBUGGING |
5466 | sections because such sections are not SEC_ALLOC and | |
5467 | thus ld.so will not process them. */ | |
5468 | if ((input_section->flags & SEC_DEBUGGING) != 0) | |
5469 | return bfd_reloc_ok; | |
5470 | ||
5471 | if (h->root.root.string) | |
5472 | name = h->root.root.string; | |
5473 | else | |
5474 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, NULL); | |
5475 | _bfd_error_handler | |
5476 | /* xgettext:c-format */ | |
2dcf00ce AM |
5477 | (_("%pB(%pA+%#" PRIx64 "): " |
5478 | "unresolvable %s relocation against symbol `%s'"), | |
5479 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
5480 | howto->name, name); | |
545bc2b3 | 5481 | bfd_set_error (bfd_error_bad_value); |
1d75a8e2 | 5482 | return bfd_reloc_notsupported; |
545bc2b3 SN |
5483 | } |
5484 | else if (h->plt.offset == (bfd_vma) -1) | |
5485 | goto bad_ifunc_reloc; | |
1419bbe5 WN |
5486 | |
5487 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
5488 | plt = globals->root.splt ? globals->root.splt : globals->root.iplt; | |
5489 | value = (plt->output_section->vma + plt->output_offset + h->plt.offset); | |
5490 | ||
5491 | switch (bfd_r_type) | |
5492 | { | |
5493 | default: | |
545bc2b3 | 5494 | bad_ifunc_reloc: |
1419bbe5 WN |
5495 | if (h->root.root.string) |
5496 | name = h->root.root.string; | |
5497 | else | |
5498 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
5499 | NULL); | |
4eca0228 | 5500 | _bfd_error_handler |
695344c0 | 5501 | /* xgettext:c-format */ |
871b3ab2 | 5502 | (_("%pB: relocation %s against STT_GNU_IFUNC " |
1419bbe5 WN |
5503 | "symbol `%s' isn't handled by %s"), input_bfd, |
5504 | howto->name, name, __FUNCTION__); | |
5505 | bfd_set_error (bfd_error_bad_value); | |
1d75a8e2 | 5506 | return bfd_reloc_notsupported; |
1419bbe5 WN |
5507 | |
5508 | case BFD_RELOC_AARCH64_NN: | |
5509 | if (rel->r_addend != 0) | |
5510 | { | |
5511 | if (h->root.root.string) | |
5512 | name = h->root.root.string; | |
5513 | else | |
5514 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
5515 | sym, NULL); | |
4eca0228 | 5516 | _bfd_error_handler |
695344c0 | 5517 | /* xgettext:c-format */ |
871b3ab2 | 5518 | (_("%pB: relocation %s against STT_GNU_IFUNC " |
2dcf00ce AM |
5519 | "symbol `%s' has non-zero addend: %" PRId64), |
5520 | input_bfd, howto->name, name, (int64_t) rel->r_addend); | |
1419bbe5 | 5521 | bfd_set_error (bfd_error_bad_value); |
1d75a8e2 | 5522 | return bfd_reloc_notsupported; |
1419bbe5 WN |
5523 | } |
5524 | ||
5525 | /* Generate dynamic relocation only when there is a | |
5526 | non-GOT reference in a shared object. */ | |
0e1862bb | 5527 | if (bfd_link_pic (info) && h->non_got_ref) |
1419bbe5 WN |
5528 | { |
5529 | Elf_Internal_Rela outrel; | |
5530 | asection *sreloc; | |
5531 | ||
5532 | /* Need a dynamic relocation to get the real function | |
5533 | address. */ | |
5534 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
5535 | info, | |
5536 | input_section, | |
5537 | rel->r_offset); | |
5538 | if (outrel.r_offset == (bfd_vma) -1 | |
5539 | || outrel.r_offset == (bfd_vma) -2) | |
5540 | abort (); | |
5541 | ||
5542 | outrel.r_offset += (input_section->output_section->vma | |
5543 | + input_section->output_offset); | |
5544 | ||
5545 | if (h->dynindx == -1 | |
5546 | || h->forced_local | |
0e1862bb | 5547 | || bfd_link_executable (info)) |
1419bbe5 WN |
5548 | { |
5549 | /* This symbol is resolved locally. */ | |
5550 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
5551 | outrel.r_addend = (h->root.u.def.value | |
5552 | + h->root.u.def.section->output_section->vma | |
5553 | + h->root.u.def.section->output_offset); | |
5554 | } | |
5555 | else | |
5556 | { | |
5557 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); | |
5558 | outrel.r_addend = 0; | |
5559 | } | |
5560 | ||
5561 | sreloc = globals->root.irelifunc; | |
5562 | elf_append_rela (output_bfd, sreloc, &outrel); | |
5563 | ||
5564 | /* If this reloc is against an external symbol, we | |
5565 | do not want to fiddle with the addend. Otherwise, | |
5566 | we need to include the symbol value so that it | |
5567 | becomes an addend for the dynamic reloc. For an | |
5568 | internal symbol, we have updated addend. */ | |
5569 | return bfd_reloc_ok; | |
5570 | } | |
5571 | /* FALLTHROUGH */ | |
1419bbe5 | 5572 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 5573 | case BFD_RELOC_AARCH64_JUMP26: |
1419bbe5 WN |
5574 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5575 | signed_addend, | |
5576 | weak_undef_p); | |
5577 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, | |
5578 | howto, value); | |
1419bbe5 WN |
5579 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
5580 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 5581 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 5582 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 5583 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
dc8008f5 | 5584 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 5585 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
a2e1db00 | 5586 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
ce336788 | 5587 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
1419bbe5 WN |
5588 | base_got = globals->root.sgot; |
5589 | off = h->got.offset; | |
5590 | ||
5591 | if (base_got == NULL) | |
5592 | abort (); | |
5593 | ||
5594 | if (off == (bfd_vma) -1) | |
5595 | { | |
5596 | bfd_vma plt_index; | |
5597 | ||
5598 | /* We can't use h->got.offset here to save state, or | |
5599 | even just remember the offset, as finish_dynamic_symbol | |
5600 | would use that as offset into .got. */ | |
5601 | ||
5602 | if (globals->root.splt != NULL) | |
5603 | { | |
b1ee0cc4 WN |
5604 | plt_index = ((h->plt.offset - globals->plt_header_size) / |
5605 | globals->plt_entry_size); | |
1419bbe5 WN |
5606 | off = (plt_index + 3) * GOT_ENTRY_SIZE; |
5607 | base_got = globals->root.sgotplt; | |
5608 | } | |
5609 | else | |
5610 | { | |
5611 | plt_index = h->plt.offset / globals->plt_entry_size; | |
5612 | off = plt_index * GOT_ENTRY_SIZE; | |
5613 | base_got = globals->root.igotplt; | |
5614 | } | |
5615 | ||
5616 | if (h->dynindx == -1 | |
5617 | || h->forced_local | |
5618 | || info->symbolic) | |
5619 | { | |
5620 | /* This references the local definition. We must | |
5621 | initialize this entry in the global offset table. | |
5622 | Since the offset must always be a multiple of 8, | |
5623 | we use the least significant bit to record | |
5624 | whether we have initialized it already. | |
5625 | ||
5626 | When doing a dynamic link, we create a .rela.got | |
5627 | relocation entry to initialize the value. This | |
5628 | is done in the finish_dynamic_symbol routine. */ | |
5629 | if ((off & 1) != 0) | |
5630 | off &= ~1; | |
5631 | else | |
5632 | { | |
5633 | bfd_put_NN (output_bfd, value, | |
5634 | base_got->contents + off); | |
5635 | /* Note that this is harmless as -1 | 1 still is -1. */ | |
5636 | h->got.offset |= 1; | |
5637 | } | |
5638 | } | |
5639 | value = (base_got->output_section->vma | |
5640 | + base_got->output_offset + off); | |
5641 | } | |
5642 | else | |
5643 | value = aarch64_calculate_got_entry_vma (h, globals, info, | |
5644 | value, output_bfd, | |
5645 | unresolved_reloc_p); | |
a0becb89 | 5646 | |
2aff25ba JW |
5647 | if (aarch64_relocation_aginst_gp_p (bfd_r_type)) |
5648 | addend = (globals->root.sgot->output_section->vma | |
5649 | + globals->root.sgot->output_offset); | |
a0becb89 | 5650 | |
1419bbe5 | 5651 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
99ad26cb | 5652 | addend, weak_undef_p); |
1419bbe5 | 5653 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value); |
1419bbe5 | 5654 | case BFD_RELOC_AARCH64_ADD_LO12: |
ce336788 | 5655 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: |
1419bbe5 WN |
5656 | break; |
5657 | } | |
5658 | } | |
5659 | ||
f657f8c4 | 5660 | skip_ifunc: |
ddb7fd0f L |
5661 | resolved_to_zero = (h != NULL |
5662 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
5663 | ||
a6bb11b2 | 5664 | switch (bfd_r_type) |
a06ea964 | 5665 | { |
a6bb11b2 | 5666 | case BFD_RELOC_AARCH64_NONE: |
0484b454 | 5667 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
a6bb11b2 | 5668 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
0484b454 | 5669 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
a06ea964 NC |
5670 | *unresolved_reloc_p = FALSE; |
5671 | return bfd_reloc_ok; | |
5672 | ||
a6bb11b2 | 5673 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
5674 | |
5675 | /* When generating a shared object or relocatable executable, these | |
07d6d2b8 AM |
5676 | relocations are copied into the output file to be resolved at |
5677 | run time. */ | |
6353d82b JW |
5678 | if (((bfd_link_pic (info) |
5679 | || globals->root.is_relocatable_executable) | |
5680 | && (input_section->flags & SEC_ALLOC) | |
5681 | && (h == NULL | |
ddb7fd0f L |
5682 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
5683 | && !resolved_to_zero) | |
6353d82b JW |
5684 | || h->root.type != bfd_link_hash_undefweak)) |
5685 | /* Or we are creating an executable, we may need to keep relocations | |
5686 | for symbols satisfied by a dynamic library if we manage to avoid | |
5687 | copy relocs for the symbol. */ | |
5688 | || (ELIMINATE_COPY_RELOCS | |
5689 | && !bfd_link_pic (info) | |
5690 | && h != NULL | |
5691 | && (input_section->flags & SEC_ALLOC) | |
5692 | && h->dynindx != -1 | |
5693 | && !h->non_got_ref | |
5694 | && ((h->def_dynamic | |
5695 | && !h->def_regular) | |
5696 | || h->root.type == bfd_link_hash_undefweak | |
5697 | || h->root.type == bfd_link_hash_undefined))) | |
a06ea964 NC |
5698 | { |
5699 | Elf_Internal_Rela outrel; | |
5700 | bfd_byte *loc; | |
5701 | bfd_boolean skip, relocate; | |
5702 | asection *sreloc; | |
5703 | ||
5704 | *unresolved_reloc_p = FALSE; | |
5705 | ||
a06ea964 NC |
5706 | skip = FALSE; |
5707 | relocate = FALSE; | |
5708 | ||
5709 | outrel.r_addend = signed_addend; | |
5710 | outrel.r_offset = | |
5711 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
5712 | rel->r_offset); | |
5713 | if (outrel.r_offset == (bfd_vma) - 1) | |
5714 | skip = TRUE; | |
5715 | else if (outrel.r_offset == (bfd_vma) - 2) | |
5716 | { | |
5717 | skip = TRUE; | |
5718 | relocate = TRUE; | |
5719 | } | |
0c1ded8d RL |
5720 | else if (abs_symbol_p) |
5721 | { | |
5722 | /* Local absolute symbol. */ | |
5723 | skip = (h->forced_local || (h->dynindx == -1)); | |
5724 | relocate = skip; | |
5725 | } | |
a06ea964 NC |
5726 | |
5727 | outrel.r_offset += (input_section->output_section->vma | |
5728 | + input_section->output_offset); | |
5729 | ||
5730 | if (skip) | |
5731 | memset (&outrel, 0, sizeof outrel); | |
5732 | else if (h != NULL | |
5733 | && h->dynindx != -1 | |
0e1862bb | 5734 | && (!bfd_link_pic (info) |
0c1ded8d | 5735 | || !(bfd_link_pie (info) || SYMBOLIC_BIND (info, h)) |
0e1862bb | 5736 | || !h->def_regular)) |
cec5225b | 5737 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); |
a06ea964 NC |
5738 | else |
5739 | { | |
5740 | int symbol; | |
5741 | ||
5742 | /* On SVR4-ish systems, the dynamic loader cannot | |
5743 | relocate the text and data segments independently, | |
5744 | so the symbol does not matter. */ | |
5745 | symbol = 0; | |
1f56df9d | 5746 | relocate = globals->no_apply_dynamic_relocs ? FALSE : TRUE; |
a6bb11b2 | 5747 | outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE)); |
a06ea964 NC |
5748 | outrel.r_addend += value; |
5749 | } | |
5750 | ||
1419bbe5 WN |
5751 | sreloc = elf_section_data (input_section)->sreloc; |
5752 | if (sreloc == NULL || sreloc->contents == NULL) | |
5753 | return bfd_reloc_notsupported; | |
5754 | ||
5755 | loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals); | |
cec5225b | 5756 | bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc); |
a06ea964 | 5757 | |
1419bbe5 | 5758 | if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size) |
a06ea964 NC |
5759 | { |
5760 | /* Sanity to check that we have previously allocated | |
5761 | sufficient space in the relocation section for the | |
5762 | number of relocations we actually want to emit. */ | |
5763 | abort (); | |
5764 | } | |
5765 | ||
5766 | /* If this reloc is against an external symbol, we do not want to | |
5767 | fiddle with the addend. Otherwise, we need to include the symbol | |
5768 | value so that it becomes an addend for the dynamic reloc. */ | |
5769 | if (!relocate) | |
5770 | return bfd_reloc_ok; | |
5771 | ||
5772 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5773 | contents, rel->r_offset, value, | |
5774 | signed_addend); | |
5775 | } | |
5776 | else | |
5777 | value += signed_addend; | |
5778 | break; | |
5779 | ||
a6bb11b2 | 5780 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 5781 | case BFD_RELOC_AARCH64_JUMP26: |
a06ea964 NC |
5782 | { |
5783 | asection *splt = globals->root.splt; | |
5784 | bfd_boolean via_plt_p = | |
5785 | splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1; | |
5786 | ||
5787 | /* A call to an undefined weak symbol is converted to a jump to | |
5788 | the next instruction unless a PLT entry will be created. | |
5789 | The jump to the next instruction is optimized as a NOP. | |
5790 | Do the same for local undefined symbols. */ | |
5791 | if (weak_undef_p && ! via_plt_p) | |
5792 | { | |
5793 | bfd_putl32 (INSN_NOP, hit_data); | |
5794 | return bfd_reloc_ok; | |
5795 | } | |
5796 | ||
5797 | /* If the call goes through a PLT entry, make sure to | |
5798 | check distance to the right destination address. */ | |
5799 | if (via_plt_p) | |
07f9ddfe JW |
5800 | value = (splt->output_section->vma |
5801 | + splt->output_offset + h->plt.offset); | |
5802 | ||
5803 | /* Check if a stub has to be inserted because the destination | |
5804 | is too far away. */ | |
5805 | struct elf_aarch64_stub_hash_entry *stub_entry = NULL; | |
2f340668 JW |
5806 | |
5807 | /* If the branch destination is directed to plt stub, "value" will be | |
5808 | the final destination, otherwise we should plus signed_addend, it may | |
5809 | contain non-zero value, for example call to local function symbol | |
5810 | which are turned into "sec_sym + sec_off", and sec_off is kept in | |
5811 | signed_addend. */ | |
5812 | if (! aarch64_valid_branch_p (via_plt_p ? value : value + signed_addend, | |
5813 | place)) | |
07f9ddfe JW |
5814 | /* The target is out of reach, so redirect the branch to |
5815 | the local stub for this function. */ | |
5816 | stub_entry = elfNN_aarch64_get_stub_entry (input_section, sym_sec, h, | |
5817 | rel, globals); | |
5818 | if (stub_entry != NULL) | |
2f340668 JW |
5819 | { |
5820 | value = (stub_entry->stub_offset | |
5821 | + stub_entry->stub_sec->output_offset | |
5822 | + stub_entry->stub_sec->output_section->vma); | |
5823 | ||
5824 | /* We have redirected the destination to stub entry address, | |
5825 | so ignore any addend record in the original rela entry. */ | |
5826 | signed_addend = 0; | |
5827 | } | |
a06ea964 | 5828 | } |
caed7120 YZ |
5829 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5830 | signed_addend, weak_undef_p); | |
07f9ddfe | 5831 | *unresolved_reloc_p = FALSE; |
a06ea964 NC |
5832 | break; |
5833 | ||
dcbd20eb JW |
5834 | case BFD_RELOC_AARCH64_16_PCREL: |
5835 | case BFD_RELOC_AARCH64_32_PCREL: | |
5836 | case BFD_RELOC_AARCH64_64_PCREL: | |
ce336788 JW |
5837 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
5838 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
5839 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
5840 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
1daf502a RL |
5841 | case BFD_RELOC_AARCH64_MOVW_PREL_G0: |
5842 | case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC: | |
5843 | case BFD_RELOC_AARCH64_MOVW_PREL_G1: | |
5844 | case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC: | |
5845 | case BFD_RELOC_AARCH64_MOVW_PREL_G2: | |
5846 | case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC: | |
5847 | case BFD_RELOC_AARCH64_MOVW_PREL_G3: | |
0e1862bb | 5848 | if (bfd_link_pic (info) |
dcbd20eb JW |
5849 | && (input_section->flags & SEC_ALLOC) != 0 |
5850 | && (input_section->flags & SEC_READONLY) != 0 | |
d68f1976 | 5851 | && !SYMBOL_REFERENCES_LOCAL (info, h)) |
dcbd20eb JW |
5852 | { |
5853 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
5854 | ||
4eca0228 | 5855 | _bfd_error_handler |
695344c0 | 5856 | /* xgettext:c-format */ |
871b3ab2 | 5857 | (_("%pB: relocation %s against symbol `%s' which may bind " |
d68f1976 JW |
5858 | "externally can not be used when making a shared object; " |
5859 | "recompile with -fPIC"), | |
dcbd20eb JW |
5860 | input_bfd, elfNN_aarch64_howto_table[howto_index].name, |
5861 | h->root.root.string); | |
5862 | bfd_set_error (bfd_error_bad_value); | |
1d75a8e2 | 5863 | return bfd_reloc_notsupported; |
dcbd20eb | 5864 | } |
1a0670f3 | 5865 | /* Fall through. */ |
dcbd20eb | 5866 | |
a6bb11b2 | 5867 | case BFD_RELOC_AARCH64_16: |
92d77487 RL |
5868 | #if ARCH_SIZE == 64 |
5869 | case BFD_RELOC_AARCH64_32: | |
5870 | #endif | |
a6bb11b2 | 5871 | case BFD_RELOC_AARCH64_ADD_LO12: |
a6bb11b2 | 5872 | case BFD_RELOC_AARCH64_BRANCH19: |
ce336788 | 5873 | case BFD_RELOC_AARCH64_LDST128_LO12: |
a6bb11b2 YZ |
5874 | case BFD_RELOC_AARCH64_LDST16_LO12: |
5875 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
5876 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
ce336788 | 5877 | case BFD_RELOC_AARCH64_LDST8_LO12: |
a6bb11b2 YZ |
5878 | case BFD_RELOC_AARCH64_MOVW_G0: |
5879 | case BFD_RELOC_AARCH64_MOVW_G0_NC: | |
ce336788 | 5880 | case BFD_RELOC_AARCH64_MOVW_G0_S: |
a6bb11b2 YZ |
5881 | case BFD_RELOC_AARCH64_MOVW_G1: |
5882 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
ce336788 | 5883 | case BFD_RELOC_AARCH64_MOVW_G1_S: |
a6bb11b2 YZ |
5884 | case BFD_RELOC_AARCH64_MOVW_G2: |
5885 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
ce336788 | 5886 | case BFD_RELOC_AARCH64_MOVW_G2_S: |
a6bb11b2 | 5887 | case BFD_RELOC_AARCH64_MOVW_G3: |
a6bb11b2 | 5888 | case BFD_RELOC_AARCH64_TSTBR14: |
caed7120 YZ |
5889 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5890 | signed_addend, weak_undef_p); | |
a06ea964 NC |
5891 | break; |
5892 | ||
a6bb11b2 YZ |
5893 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
5894 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 5895 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 5896 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 5897 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 5898 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
2aff25ba JW |
5899 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
5900 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: | |
5901 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: | |
a06ea964 NC |
5902 | if (globals->root.sgot == NULL) |
5903 | BFD_ASSERT (h != NULL); | |
5904 | ||
ff07562f | 5905 | relative_reloc = FALSE; |
a06ea964 NC |
5906 | if (h != NULL) |
5907 | { | |
99ad26cb | 5908 | bfd_vma addend = 0; |
ff07562f JW |
5909 | |
5910 | /* If a symbol is not dynamic and is not undefined weak, bind it | |
5911 | locally and generate a RELATIVE relocation under PIC mode. | |
5912 | ||
5913 | NOTE: one symbol may be referenced by several relocations, we | |
5914 | should only generate one RELATIVE relocation for that symbol. | |
5915 | Therefore, check GOT offset mark first. */ | |
5916 | if (h->dynindx == -1 | |
5917 | && !h->forced_local | |
5918 | && h->root.type != bfd_link_hash_undefweak | |
5919 | && bfd_link_pic (info) | |
5920 | && !symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
5921 | relative_reloc = TRUE; | |
5922 | ||
a06ea964 NC |
5923 | value = aarch64_calculate_got_entry_vma (h, globals, info, value, |
5924 | output_bfd, | |
5925 | unresolved_reloc_p); | |
ff07562f JW |
5926 | /* Record the GOT entry address which will be used when generating |
5927 | RELATIVE relocation. */ | |
5928 | if (relative_reloc) | |
5929 | got_entry_addr = value; | |
5930 | ||
2aff25ba | 5931 | if (aarch64_relocation_aginst_gp_p (bfd_r_type)) |
99ad26cb JW |
5932 | addend = (globals->root.sgot->output_section->vma |
5933 | + globals->root.sgot->output_offset); | |
caed7120 | 5934 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
99ad26cb | 5935 | addend, weak_undef_p); |
a06ea964 | 5936 | } |
b53b1bed JW |
5937 | else |
5938 | { | |
99ad26cb | 5939 | bfd_vma addend = 0; |
b53b1bed JW |
5940 | struct elf_aarch64_local_symbol *locals |
5941 | = elf_aarch64_locals (input_bfd); | |
5942 | ||
5943 | if (locals == NULL) | |
5944 | { | |
5945 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
4eca0228 | 5946 | _bfd_error_handler |
695344c0 | 5947 | /* xgettext:c-format */ |
90b6238f | 5948 | (_("%pB: local symbol descriptor table be NULL when applying " |
b53b1bed JW |
5949 | "relocation %s against local symbol"), |
5950 | input_bfd, elfNN_aarch64_howto_table[howto_index].name); | |
5951 | abort (); | |
5952 | } | |
5953 | ||
5954 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
5955 | base_got = globals->root.sgot; | |
ff07562f JW |
5956 | got_entry_addr = (base_got->output_section->vma |
5957 | + base_got->output_offset + off); | |
b53b1bed JW |
5958 | |
5959 | if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
5960 | { | |
5961 | bfd_put_64 (output_bfd, value, base_got->contents + off); | |
5962 | ||
ff07562f JW |
5963 | /* For local symbol, we have done absolute relocation in static |
5964 | linking stage. While for shared library, we need to update the | |
5965 | content of GOT entry according to the shared object's runtime | |
5966 | base address. So, we need to generate a R_AARCH64_RELATIVE reloc | |
5967 | for dynamic linker. */ | |
0e1862bb | 5968 | if (bfd_link_pic (info)) |
ff07562f | 5969 | relative_reloc = TRUE; |
b53b1bed JW |
5970 | |
5971 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
5972 | } | |
5973 | ||
5974 | /* Update the relocation value to GOT entry addr as we have transformed | |
5975 | the direct data access into indirect data access through GOT. */ | |
5976 | value = got_entry_addr; | |
99ad26cb | 5977 | |
2aff25ba | 5978 | if (aarch64_relocation_aginst_gp_p (bfd_r_type)) |
99ad26cb JW |
5979 | addend = base_got->output_section->vma + base_got->output_offset; |
5980 | ||
5981 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, | |
5982 | addend, weak_undef_p); | |
b53b1bed | 5983 | } |
ff07562f JW |
5984 | |
5985 | if (relative_reloc) | |
5986 | { | |
5987 | asection *s; | |
5988 | Elf_Internal_Rela outrel; | |
5989 | ||
5990 | s = globals->root.srelgot; | |
5991 | if (s == NULL) | |
5992 | abort (); | |
5993 | ||
5994 | outrel.r_offset = got_entry_addr; | |
5995 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); | |
5996 | outrel.r_addend = orig_value; | |
5997 | elf_append_rela (output_bfd, s, &outrel); | |
5998 | } | |
a2e1db00 RL |
5999 | break; |
6000 | ||
ce336788 | 6001 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 6002 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 6003 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 6004 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 6005 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 6006 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 6007 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
73f925cc | 6008 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 6009 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 6010 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
6011 | if (globals->root.sgot == NULL) |
6012 | return bfd_reloc_notsupported; | |
6013 | ||
6014 | value = (symbol_got_offset (input_bfd, h, r_symndx) | |
6015 | + globals->root.sgot->output_section->vma | |
f44a1f8e | 6016 | + globals->root.sgot->output_offset); |
a06ea964 | 6017 | |
caed7120 YZ |
6018 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
6019 | 0, weak_undef_p); | |
a06ea964 NC |
6020 | *unresolved_reloc_p = FALSE; |
6021 | break; | |
6022 | ||
7ba7cfe4 | 6023 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 6024 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
3b957e5b RL |
6025 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
6026 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
94facae3 RL |
6027 | if (globals->root.sgot == NULL) |
6028 | return bfd_reloc_notsupported; | |
6029 | ||
6030 | value = symbol_got_offset (input_bfd, h, r_symndx); | |
6031 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, | |
6032 | 0, weak_undef_p); | |
6033 | *unresolved_reloc_p = FALSE; | |
6034 | break; | |
6035 | ||
6ffe9a1b | 6036 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12: |
40fbed84 | 6037 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12: |
753999c1 | 6038 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC: |
07c9aa07 JW |
6039 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12: |
6040 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC: | |
6041 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12: | |
6042 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC: | |
6043 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12: | |
6044 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC: | |
6045 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12: | |
6046 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC: | |
6ffe9a1b JW |
6047 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0: |
6048 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC: | |
6049 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1: | |
6050 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC: | |
6051 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2: | |
40fbed84 JW |
6052 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
6053 | signed_addend - dtpoff_base (info), | |
6054 | weak_undef_p); | |
6055 | break; | |
6056 | ||
a6bb11b2 YZ |
6057 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
6058 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: | |
6059 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: | |
e04ef022 RL |
6060 | case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12: |
6061 | case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC: | |
6062 | case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12: | |
6063 | case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC: | |
6064 | case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12: | |
6065 | case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC: | |
6066 | case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12: | |
6067 | case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC: | |
a6bb11b2 YZ |
6068 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: |
6069 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
6070 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: | |
6071 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
6072 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
caed7120 YZ |
6073 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
6074 | signed_addend - tpoff_base (info), | |
6075 | weak_undef_p); | |
a06ea964 NC |
6076 | *unresolved_reloc_p = FALSE; |
6077 | break; | |
6078 | ||
f955cccf | 6079 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 6080 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 6081 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 6082 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
f955cccf | 6083 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
1ada945d | 6084 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
6085 | if (globals->root.sgot == NULL) |
6086 | return bfd_reloc_notsupported; | |
a06ea964 NC |
6087 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) |
6088 | + globals->root.sgotplt->output_section->vma | |
f44a1f8e | 6089 | + globals->root.sgotplt->output_offset |
a06ea964 NC |
6090 | + globals->sgotplt_jump_table_size); |
6091 | ||
caed7120 YZ |
6092 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
6093 | 0, weak_undef_p); | |
a06ea964 NC |
6094 | *unresolved_reloc_p = FALSE; |
6095 | break; | |
6096 | ||
0484b454 RL |
6097 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
6098 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
6099 | if (globals->root.sgot == NULL) | |
6100 | return bfd_reloc_notsupported; | |
6101 | ||
6102 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) | |
6103 | + globals->root.sgotplt->output_section->vma | |
6104 | + globals->root.sgotplt->output_offset | |
6105 | + globals->sgotplt_jump_table_size); | |
6106 | ||
6107 | value -= (globals->root.sgot->output_section->vma | |
6108 | + globals->root.sgot->output_offset); | |
6109 | ||
6110 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, | |
6111 | 0, weak_undef_p); | |
6112 | *unresolved_reloc_p = FALSE; | |
6113 | break; | |
6114 | ||
a06ea964 NC |
6115 | default: |
6116 | return bfd_reloc_notsupported; | |
6117 | } | |
6118 | ||
6119 | if (saved_addend) | |
6120 | *saved_addend = value; | |
6121 | ||
6122 | /* Only apply the final relocation in a sequence. */ | |
6123 | if (save_addend) | |
6124 | return bfd_reloc_continue; | |
6125 | ||
caed7120 YZ |
6126 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, |
6127 | howto, value); | |
a06ea964 NC |
6128 | } |
6129 | ||
2d0ca824 YN |
6130 | /* LP64 and ILP32 operates on x- and w-registers respectively. |
6131 | Next definitions take into account the difference between | |
6132 | corresponding machine codes. R means x-register if the target | |
6133 | arch is LP64, and w-register if the target is ILP32. */ | |
6134 | ||
6135 | #if ARCH_SIZE == 64 | |
6136 | # define add_R0_R0 (0x91000000) | |
6137 | # define add_R0_R0_R1 (0x8b000020) | |
6138 | # define add_R0_R1 (0x91400020) | |
6139 | # define ldr_R0 (0x58000000) | |
6140 | # define ldr_R0_mask(i) (i & 0xffffffe0) | |
6141 | # define ldr_R0_x0 (0xf9400000) | |
6142 | # define ldr_hw_R0 (0xf2a00000) | |
6143 | # define movk_R0 (0xf2800000) | |
6144 | # define movz_R0 (0xd2a00000) | |
6145 | # define movz_hw_R0 (0xd2c00000) | |
6146 | #else /*ARCH_SIZE == 32 */ | |
6147 | # define add_R0_R0 (0x11000000) | |
6148 | # define add_R0_R0_R1 (0x0b000020) | |
6149 | # define add_R0_R1 (0x11400020) | |
6150 | # define ldr_R0 (0x18000000) | |
6151 | # define ldr_R0_mask(i) (i & 0xbfffffe0) | |
6152 | # define ldr_R0_x0 (0xb9400000) | |
6153 | # define ldr_hw_R0 (0x72a00000) | |
6154 | # define movk_R0 (0x72800000) | |
6155 | # define movz_R0 (0x52a00000) | |
6156 | # define movz_hw_R0 (0x52c00000) | |
6157 | #endif | |
6158 | ||
9fca35fc TC |
6159 | /* Structure to hold payload for _bfd_aarch64_erratum_843419_clear_stub, |
6160 | it is used to identify the stub information to reset. */ | |
6161 | ||
6162 | struct erratum_843419_branch_to_stub_clear_data | |
6163 | { | |
6164 | bfd_vma adrp_offset; | |
6165 | asection *output_section; | |
6166 | }; | |
6167 | ||
6168 | /* Clear the erratum information for GEN_ENTRY if the ADRP_OFFSET and | |
6169 | section inside IN_ARG matches. The clearing is done by setting the | |
6170 | stub_type to none. */ | |
6171 | ||
6172 | static bfd_boolean | |
6173 | _bfd_aarch64_erratum_843419_clear_stub (struct bfd_hash_entry *gen_entry, | |
6174 | void *in_arg) | |
6175 | { | |
6176 | struct elf_aarch64_stub_hash_entry *stub_entry | |
6177 | = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
6178 | struct erratum_843419_branch_to_stub_clear_data *data | |
6179 | = (struct erratum_843419_branch_to_stub_clear_data *) in_arg; | |
6180 | ||
6181 | if (stub_entry->target_section != data->output_section | |
6182 | || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer | |
6183 | || stub_entry->adrp_offset != data->adrp_offset) | |
6184 | return TRUE; | |
6185 | ||
6186 | /* Change the stub type instead of removing the entry, removing from the hash | |
6187 | table would be slower and we have already reserved the memory for the entry | |
6188 | so there wouldn't be much gain. Changing the stub also keeps around a | |
6189 | record of what was there before. */ | |
6190 | stub_entry->stub_type = aarch64_stub_none; | |
6191 | ||
6192 | /* We're done and there could have been only one matching stub at that | |
6193 | particular offset, so abort further traversal. */ | |
6194 | return FALSE; | |
6195 | } | |
6196 | ||
6197 | /* TLS Relaxations may relax an adrp sequence that matches the erratum 843419 | |
6198 | sequence. In this case the erratum no longer applies and we need to remove | |
6199 | the entry from the pending stub generation. This clears matching adrp insn | |
6200 | at ADRP_OFFSET in INPUT_SECTION in the stub table defined in GLOBALS. */ | |
6201 | ||
6202 | static void | |
6203 | clear_erratum_843419_entry (struct elf_aarch64_link_hash_table *globals, | |
6204 | bfd_vma adrp_offset, asection *input_section) | |
6205 | { | |
6206 | if (globals->fix_erratum_843419) | |
6207 | { | |
6208 | struct erratum_843419_branch_to_stub_clear_data data; | |
6209 | data.adrp_offset = adrp_offset; | |
6210 | data.output_section = input_section; | |
6211 | ||
6212 | bfd_hash_traverse (&globals->stub_hash_table, | |
6213 | _bfd_aarch64_erratum_843419_clear_stub, &data); | |
6214 | } | |
6215 | } | |
6216 | ||
a06ea964 NC |
6217 | /* Handle TLS relaxations. Relaxing is possible for symbols that use |
6218 | R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static | |
6219 | link. | |
6220 | ||
6221 | Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller | |
6222 | is to then call final_link_relocate. Return other values in the | |
6223 | case of error. */ | |
6224 | ||
6225 | static bfd_reloc_status_type | |
cec5225b | 6226 | elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals, |
9fca35fc TC |
6227 | bfd *input_bfd, asection *input_section, |
6228 | bfd_byte *contents, Elf_Internal_Rela *rel, | |
6229 | struct elf_link_hash_entry *h) | |
a06ea964 NC |
6230 | { |
6231 | bfd_boolean is_local = h == NULL; | |
cec5225b | 6232 | unsigned int r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
6233 | unsigned long insn; |
6234 | ||
6235 | BFD_ASSERT (globals && input_bfd && contents && rel); | |
6236 | ||
0aa13fee | 6237 | switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type)) |
a06ea964 | 6238 | { |
a6bb11b2 | 6239 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 6240 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a06ea964 NC |
6241 | if (is_local) |
6242 | { | |
6243 | /* GD->LE relaxation: | |
2d0ca824 | 6244 | adrp x0, :tlsgd:var => movz R0, :tprel_g1:var |
a06ea964 | 6245 | or |
2d0ca824 YN |
6246 | adrp x0, :tlsdesc:var => movz R0, :tprel_g1:var |
6247 | ||
6248 | Where R is x for LP64, and w for ILP32. */ | |
6249 | bfd_putl32 (movz_R0, contents + rel->r_offset); | |
9fca35fc TC |
6250 | /* We have relaxed the adrp into a mov, we may have to clear any |
6251 | pending erratum fixes. */ | |
6252 | clear_erratum_843419_entry (globals, rel->r_offset, input_section); | |
a06ea964 NC |
6253 | return bfd_reloc_continue; |
6254 | } | |
6255 | else | |
6256 | { | |
6257 | /* GD->IE relaxation: | |
6258 | adrp x0, :tlsgd:var => adrp x0, :gottprel:var | |
6259 | or | |
6260 | adrp x0, :tlsdesc:var => adrp x0, :gottprel:var | |
6261 | */ | |
a06ea964 NC |
6262 | return bfd_reloc_continue; |
6263 | } | |
6264 | ||
389b8029 MS |
6265 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
6266 | BFD_ASSERT (0); | |
6267 | break; | |
6268 | ||
1ada945d MS |
6269 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
6270 | if (is_local) | |
6271 | { | |
6272 | /* Tiny TLSDESC->LE relaxation: | |
07d6d2b8 AM |
6273 | ldr x1, :tlsdesc:var => movz R0, #:tprel_g1:var |
6274 | adr x0, :tlsdesc:var => movk R0, #:tprel_g0_nc:var | |
1ada945d | 6275 | .tlsdesccall var |
07d6d2b8 | 6276 | blr x1 => nop |
2d0ca824 YN |
6277 | |
6278 | Where R is x for LP64, and w for ILP32. */ | |
1ada945d MS |
6279 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); |
6280 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
6281 | ||
6282 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
6283 | AARCH64_R (TLSLE_MOVW_TPREL_G0_NC)); | |
6284 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6285 | ||
2d0ca824 YN |
6286 | bfd_putl32 (movz_R0, contents + rel->r_offset); |
6287 | bfd_putl32 (movk_R0, contents + rel->r_offset + 4); | |
1ada945d MS |
6288 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); |
6289 | return bfd_reloc_continue; | |
6290 | } | |
6291 | else | |
6292 | { | |
6293 | /* Tiny TLSDESC->IE relaxation: | |
07d6d2b8 AM |
6294 | ldr x1, :tlsdesc:var => ldr x0, :gottprel:var |
6295 | adr x0, :tlsdesc:var => nop | |
1ada945d | 6296 | .tlsdesccall var |
07d6d2b8 | 6297 | blr x1 => nop |
1ada945d MS |
6298 | */ |
6299 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); | |
6300 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
6301 | ||
6302 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6303 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6304 | ||
2d0ca824 | 6305 | bfd_putl32 (ldr_R0, contents + rel->r_offset); |
1ada945d MS |
6306 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4); |
6307 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); | |
6308 | return bfd_reloc_continue; | |
6309 | } | |
6310 | ||
3c12b054 MS |
6311 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
6312 | if (is_local) | |
6313 | { | |
6314 | /* Tiny GD->LE relaxation: | |
07d6d2b8 AM |
6315 | adr x0, :tlsgd:var => mrs x1, tpidr_el0 |
6316 | bl __tls_get_addr => add R0, R1, #:tprel_hi12:x, lsl #12 | |
6317 | nop => add R0, R0, #:tprel_lo12_nc:x | |
2d0ca824 YN |
6318 | |
6319 | Where R is x for LP64, and x for Ilp32. */ | |
3c12b054 MS |
6320 | |
6321 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
6322 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6323 | ||
6324 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0); | |
2d0ca824 YN |
6325 | bfd_putl32 (add_R0_R1, contents + rel->r_offset + 4); |
6326 | bfd_putl32 (add_R0_R0, contents + rel->r_offset + 8); | |
3c12b054 MS |
6327 | |
6328 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
6329 | AARCH64_R (TLSLE_ADD_TPREL_LO12_NC)); | |
6330 | rel[1].r_offset = rel->r_offset + 8; | |
6331 | ||
6332 | /* Move the current relocation to the second instruction in | |
6333 | the sequence. */ | |
6334 | rel->r_offset += 4; | |
6335 | rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
6336 | AARCH64_R (TLSLE_ADD_TPREL_HI12)); | |
6337 | return bfd_reloc_continue; | |
6338 | } | |
6339 | else | |
6340 | { | |
6341 | /* Tiny GD->IE relaxation: | |
07d6d2b8 AM |
6342 | adr x0, :tlsgd:var => ldr R0, :gottprel:var |
6343 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6344 | nop => add R0, R0, R1 | |
2d0ca824 YN |
6345 | |
6346 | Where R is x for LP64, and w for Ilp32. */ | |
3c12b054 MS |
6347 | |
6348 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
6349 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6350 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6351 | ||
2d0ca824 | 6352 | bfd_putl32 (ldr_R0, contents + rel->r_offset); |
3c12b054 | 6353 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); |
2d0ca824 | 6354 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8); |
3c12b054 MS |
6355 | return bfd_reloc_continue; |
6356 | } | |
6357 | ||
ac734732 RL |
6358 | #if ARCH_SIZE == 64 |
6359 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: | |
6360 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSGD_MOVW_G0_NC)); | |
6361 | BFD_ASSERT (rel->r_offset + 12 == rel[2].r_offset); | |
6362 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (CALL26)); | |
6363 | ||
6364 | if (is_local) | |
6365 | { | |
6366 | /* Large GD->LE relaxation: | |
07d6d2b8 | 6367 | movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32 |
ac734732 | 6368 | movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16 |
07d6d2b8 AM |
6369 | add x0, gp, x0 => movk x0, #:tprel_g0_nc:var |
6370 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6371 | nop => add x0, x0, x1 | |
ac734732 RL |
6372 | */ |
6373 | rel[2].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
6374 | AARCH64_R (TLSLE_MOVW_TPREL_G0_NC)); | |
6375 | rel[2].r_offset = rel->r_offset + 8; | |
6376 | ||
2d0ca824 YN |
6377 | bfd_putl32 (movz_hw_R0, contents + rel->r_offset + 0); |
6378 | bfd_putl32 (ldr_hw_R0, contents + rel->r_offset + 4); | |
6379 | bfd_putl32 (movk_R0, contents + rel->r_offset + 8); | |
ac734732 | 6380 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12); |
2d0ca824 | 6381 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16); |
ac734732 RL |
6382 | } |
6383 | else | |
6384 | { | |
6385 | /* Large GD->IE relaxation: | |
07d6d2b8 | 6386 | movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16 |
ac734732 | 6387 | movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var |
07d6d2b8 AM |
6388 | add x0, gp, x0 => ldr x0, [gp, x0] |
6389 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6390 | nop => add x0, x0, x1 | |
ac734732 RL |
6391 | */ |
6392 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6393 | bfd_putl32 (0xd2a80000, contents + rel->r_offset + 0); | |
2d0ca824 | 6394 | bfd_putl32 (ldr_R0, contents + rel->r_offset + 8); |
ac734732 | 6395 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12); |
2d0ca824 | 6396 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16); |
ac734732 RL |
6397 | } |
6398 | return bfd_reloc_continue; | |
6399 | ||
6400 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: | |
6401 | return bfd_reloc_continue; | |
6402 | #endif | |
6403 | ||
043bf05a MS |
6404 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
6405 | return bfd_reloc_continue; | |
6406 | ||
a6bb11b2 | 6407 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
a06ea964 NC |
6408 | if (is_local) |
6409 | { | |
6410 | /* GD->LE relaxation: | |
6411 | ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var | |
2d0ca824 YN |
6412 | |
6413 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
6414 | bfd_putl32 (movk_R0, contents + rel->r_offset); | |
a06ea964 NC |
6415 | return bfd_reloc_continue; |
6416 | } | |
6417 | else | |
6418 | { | |
6419 | /* GD->IE relaxation: | |
2d0ca824 YN |
6420 | ldr xd, [x0, #:tlsdesc_lo12:var] => ldr R0, [x0, #:gottprel_lo12:var] |
6421 | ||
6422 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 | 6423 | insn = bfd_getl32 (contents + rel->r_offset); |
2d0ca824 | 6424 | bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset); |
a06ea964 NC |
6425 | return bfd_reloc_continue; |
6426 | } | |
6427 | ||
a6bb11b2 | 6428 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a06ea964 NC |
6429 | if (is_local) |
6430 | { | |
6431 | /* GD->LE relaxation | |
07d6d2b8 AM |
6432 | add x0, #:tlsgd_lo12:var => movk R0, :tprel_g0_nc:var |
6433 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6434 | nop => add R0, R1, R0 | |
2d0ca824 YN |
6435 | |
6436 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 NC |
6437 | |
6438 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
6439 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
cec5225b | 6440 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 | 6441 | |
2d0ca824 | 6442 | bfd_putl32 (movk_R0, contents + rel->r_offset); |
a06ea964 | 6443 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); |
2d0ca824 | 6444 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8); |
a06ea964 NC |
6445 | return bfd_reloc_continue; |
6446 | } | |
6447 | else | |
6448 | { | |
6449 | /* GD->IE relaxation | |
07d6d2b8 AM |
6450 | ADD x0, #:tlsgd_lo12:var => ldr R0, [x0, #:gottprel_lo12:var] |
6451 | BL __tls_get_addr => mrs x1, tpidr_el0 | |
a06ea964 | 6452 | R_AARCH64_CALL26 |
07d6d2b8 | 6453 | NOP => add R0, R1, R0 |
5cd1d8bc YN |
6454 | |
6455 | Where R is x for lp64 mode, and w for ilp32 mode. */ | |
a06ea964 | 6456 | |
a6bb11b2 | 6457 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); |
a06ea964 NC |
6458 | |
6459 | /* Remove the relocation on the BL instruction. */ | |
cec5225b | 6460 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 | 6461 | |
a06ea964 NC |
6462 | /* We choose to fixup the BL and NOP instructions using the |
6463 | offset from the second relocation to allow flexibility in | |
6464 | scheduling instructions between the ADD and BL. */ | |
2d0ca824 | 6465 | bfd_putl32 (ldr_R0_x0, contents + rel->r_offset); |
5cd1d8bc | 6466 | bfd_putl32 (0xd53bd041, contents + rel[1].r_offset); |
2d0ca824 | 6467 | bfd_putl32 (add_R0_R0_R1, contents + rel[1].r_offset + 4); |
a06ea964 NC |
6468 | return bfd_reloc_continue; |
6469 | } | |
6470 | ||
0484b454 | 6471 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
f955cccf | 6472 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 6473 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a06ea964 | 6474 | /* GD->IE/LE relaxation: |
07d6d2b8 AM |
6475 | add x0, x0, #:tlsdesc_lo12:var => nop |
6476 | blr xd => nop | |
a06ea964 NC |
6477 | */ |
6478 | bfd_putl32 (INSN_NOP, contents + rel->r_offset); | |
6479 | return bfd_reloc_ok; | |
6480 | ||
0484b454 RL |
6481 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
6482 | if (is_local) | |
6483 | { | |
6484 | /* GD->LE relaxation: | |
2d0ca824 YN |
6485 | ldr xd, [gp, xn] => movk R0, #:tprel_g0_nc:var |
6486 | ||
6487 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
6488 | bfd_putl32 (movk_R0, contents + rel->r_offset); | |
0484b454 RL |
6489 | return bfd_reloc_continue; |
6490 | } | |
6491 | else | |
6492 | { | |
6493 | /* GD->IE relaxation: | |
2d0ca824 YN |
6494 | ldr xd, [gp, xn] => ldr R0, [gp, xn] |
6495 | ||
6496 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
0484b454 | 6497 | insn = bfd_getl32 (contents + rel->r_offset); |
2d0ca824 | 6498 | bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset); |
0484b454 RL |
6499 | return bfd_reloc_ok; |
6500 | } | |
6501 | ||
6502 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
6503 | /* GD->LE relaxation: | |
2d0ca824 | 6504 | movk xd, #:tlsdesc_off_g0_nc:var => movk R0, #:tprel_g1_nc:var, lsl #16 |
0484b454 | 6505 | GD->IE relaxation: |
2d0ca824 YN |
6506 | movk xd, #:tlsdesc_off_g0_nc:var => movk Rd, #:gottprel_g0_nc:var |
6507 | ||
6508 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
0484b454 | 6509 | if (is_local) |
2d0ca824 | 6510 | bfd_putl32 (ldr_hw_R0, contents + rel->r_offset); |
0484b454 RL |
6511 | return bfd_reloc_continue; |
6512 | ||
6513 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
6514 | if (is_local) | |
6515 | { | |
6516 | /* GD->LE relaxation: | |
2d0ca824 YN |
6517 | movz xd, #:tlsdesc_off_g1:var => movz R0, #:tprel_g2:var, lsl #32 |
6518 | ||
6519 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
6520 | bfd_putl32 (movz_hw_R0, contents + rel->r_offset); | |
0484b454 RL |
6521 | return bfd_reloc_continue; |
6522 | } | |
6523 | else | |
6524 | { | |
6525 | /* GD->IE relaxation: | |
2d0ca824 YN |
6526 | movz xd, #:tlsdesc_off_g1:var => movz Rd, #:gottprel_g1:var, lsl #16 |
6527 | ||
6528 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
0484b454 | 6529 | insn = bfd_getl32 (contents + rel->r_offset); |
2d0ca824 | 6530 | bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset); |
0484b454 RL |
6531 | return bfd_reloc_continue; |
6532 | } | |
6533 | ||
a6bb11b2 | 6534 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a06ea964 | 6535 | /* IE->LE relaxation: |
07d6d2b8 | 6536 | adrp xd, :gottprel:var => movz Rd, :tprel_g1:var |
2d0ca824 YN |
6537 | |
6538 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 NC |
6539 | if (is_local) |
6540 | { | |
6541 | insn = bfd_getl32 (contents + rel->r_offset); | |
2d0ca824 | 6542 | bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset); |
9fca35fc TC |
6543 | /* We have relaxed the adrp into a mov, we may have to clear any |
6544 | pending erratum fixes. */ | |
6545 | clear_erratum_843419_entry (globals, rel->r_offset, input_section); | |
a06ea964 NC |
6546 | } |
6547 | return bfd_reloc_continue; | |
6548 | ||
a6bb11b2 | 6549 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: |
a06ea964 | 6550 | /* IE->LE relaxation: |
07d6d2b8 | 6551 | ldr xd, [xm, #:gottprel_lo12:var] => movk Rd, :tprel_g0_nc:var |
2d0ca824 YN |
6552 | |
6553 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 NC |
6554 | if (is_local) |
6555 | { | |
6556 | insn = bfd_getl32 (contents + rel->r_offset); | |
2d0ca824 | 6557 | bfd_putl32 (movk_R0 | (insn & 0x1f), contents + rel->r_offset); |
a06ea964 NC |
6558 | } |
6559 | return bfd_reloc_continue; | |
6560 | ||
259364ad JW |
6561 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
6562 | /* LD->LE relaxation (tiny): | |
6563 | adr x0, :tlsldm:x => mrs x0, tpidr_el0 | |
c1fc2d7e YN |
6564 | bl __tls_get_addr => add R0, R0, TCB_SIZE |
6565 | ||
6566 | Where R is x for lp64 mode, and w for ilp32 mode. */ | |
259364ad JW |
6567 | if (is_local) |
6568 | { | |
6569 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6570 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); | |
6571 | /* No need of CALL26 relocation for tls_get_addr. */ | |
6572 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6573 | bfd_putl32 (0xd53bd040, contents + rel->r_offset + 0); | |
2d0ca824 YN |
6574 | bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10), |
6575 | contents + rel->r_offset + 4); | |
259364ad JW |
6576 | return bfd_reloc_ok; |
6577 | } | |
6578 | return bfd_reloc_continue; | |
6579 | ||
6580 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: | |
6581 | /* LD->LE relaxation (small): | |
6582 | adrp x0, :tlsldm:x => mrs x0, tpidr_el0 | |
6583 | */ | |
6584 | if (is_local) | |
6585 | { | |
6586 | bfd_putl32 (0xd53bd040, contents + rel->r_offset); | |
6587 | return bfd_reloc_ok; | |
6588 | } | |
6589 | return bfd_reloc_continue; | |
6590 | ||
6591 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: | |
6592 | /* LD->LE relaxation (small): | |
c1fc2d7e | 6593 | add x0, #:tlsldm_lo12:x => add R0, R0, TCB_SIZE |
259364ad | 6594 | bl __tls_get_addr => nop |
c1fc2d7e YN |
6595 | |
6596 | Where R is x for lp64 mode, and w for ilp32 mode. */ | |
259364ad JW |
6597 | if (is_local) |
6598 | { | |
6599 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6600 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); | |
6601 | /* No need of CALL26 relocation for tls_get_addr. */ | |
6602 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
2d0ca824 YN |
6603 | bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10), |
6604 | contents + rel->r_offset + 0); | |
c1fc2d7e | 6605 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4); |
259364ad JW |
6606 | return bfd_reloc_ok; |
6607 | } | |
6608 | return bfd_reloc_continue; | |
6609 | ||
a06ea964 NC |
6610 | default: |
6611 | return bfd_reloc_continue; | |
6612 | } | |
6613 | ||
6614 | return bfd_reloc_ok; | |
6615 | } | |
6616 | ||
6617 | /* Relocate an AArch64 ELF section. */ | |
6618 | ||
6619 | static bfd_boolean | |
cec5225b | 6620 | elfNN_aarch64_relocate_section (bfd *output_bfd, |
a06ea964 NC |
6621 | struct bfd_link_info *info, |
6622 | bfd *input_bfd, | |
6623 | asection *input_section, | |
6624 | bfd_byte *contents, | |
6625 | Elf_Internal_Rela *relocs, | |
6626 | Elf_Internal_Sym *local_syms, | |
6627 | asection **local_sections) | |
6628 | { | |
6629 | Elf_Internal_Shdr *symtab_hdr; | |
6630 | struct elf_link_hash_entry **sym_hashes; | |
6631 | Elf_Internal_Rela *rel; | |
6632 | Elf_Internal_Rela *relend; | |
6633 | const char *name; | |
cec5225b | 6634 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 NC |
6635 | bfd_boolean save_addend = FALSE; |
6636 | bfd_vma addend = 0; | |
6637 | ||
cec5225b | 6638 | globals = elf_aarch64_hash_table (info); |
a06ea964 NC |
6639 | |
6640 | symtab_hdr = &elf_symtab_hdr (input_bfd); | |
6641 | sym_hashes = elf_sym_hashes (input_bfd); | |
6642 | ||
6643 | rel = relocs; | |
6644 | relend = relocs + input_section->reloc_count; | |
6645 | for (; rel < relend; rel++) | |
6646 | { | |
6647 | unsigned int r_type; | |
a6bb11b2 YZ |
6648 | bfd_reloc_code_real_type bfd_r_type; |
6649 | bfd_reloc_code_real_type relaxed_bfd_r_type; | |
a06ea964 NC |
6650 | reloc_howto_type *howto; |
6651 | unsigned long r_symndx; | |
6652 | Elf_Internal_Sym *sym; | |
6653 | asection *sec; | |
6654 | struct elf_link_hash_entry *h; | |
6655 | bfd_vma relocation; | |
6656 | bfd_reloc_status_type r; | |
6657 | arelent bfd_reloc; | |
6658 | char sym_type; | |
6659 | bfd_boolean unresolved_reloc = FALSE; | |
6660 | char *error_message = NULL; | |
6661 | ||
cec5225b YZ |
6662 | r_symndx = ELFNN_R_SYM (rel->r_info); |
6663 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 | 6664 | |
0aa13fee AM |
6665 | bfd_reloc.howto = elfNN_aarch64_howto_from_type (input_bfd, r_type); |
6666 | howto = bfd_reloc.howto; | |
a06ea964 | 6667 | |
7fcfd62d | 6668 | if (howto == NULL) |
47aeb64c NC |
6669 | return _bfd_unrecognized_reloc (input_bfd, input_section, r_type); |
6670 | ||
a6bb11b2 | 6671 | bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto); |
7fcfd62d | 6672 | |
a06ea964 NC |
6673 | h = NULL; |
6674 | sym = NULL; | |
6675 | sec = NULL; | |
6676 | ||
6677 | if (r_symndx < symtab_hdr->sh_info) | |
6678 | { | |
6679 | sym = local_syms + r_symndx; | |
cec5225b | 6680 | sym_type = ELFNN_ST_TYPE (sym->st_info); |
a06ea964 NC |
6681 | sec = local_sections[r_symndx]; |
6682 | ||
6683 | /* An object file might have a reference to a local | |
6684 | undefined symbol. This is a daft object file, but we | |
6685 | should at least do something about it. */ | |
6686 | if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL | |
6687 | && bfd_is_und_section (sec) | |
6688 | && ELF_ST_BIND (sym->st_info) != STB_WEAK) | |
1a72702b AM |
6689 | (*info->callbacks->undefined_symbol) |
6690 | (info, bfd_elf_string_from_elf_section | |
6691 | (input_bfd, symtab_hdr->sh_link, sym->st_name), | |
6692 | input_bfd, input_section, rel->r_offset, TRUE); | |
a06ea964 | 6693 | |
a06ea964 | 6694 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
1419bbe5 WN |
6695 | |
6696 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
0e1862bb | 6697 | if (!bfd_link_relocatable (info) |
1419bbe5 WN |
6698 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
6699 | { | |
6700 | h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd, | |
6701 | rel, FALSE); | |
6702 | if (h == NULL) | |
6703 | abort (); | |
6704 | ||
6705 | /* Set STT_GNU_IFUNC symbol value. */ | |
6706 | h->root.u.def.value = sym->st_value; | |
6707 | h->root.u.def.section = sec; | |
6708 | } | |
a06ea964 NC |
6709 | } |
6710 | else | |
6711 | { | |
62d887d4 | 6712 | bfd_boolean warned, ignored; |
a06ea964 NC |
6713 | |
6714 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
6715 | r_symndx, symtab_hdr, sym_hashes, | |
6716 | h, sec, relocation, | |
62d887d4 | 6717 | unresolved_reloc, warned, ignored); |
a06ea964 NC |
6718 | |
6719 | sym_type = h->type; | |
6720 | } | |
6721 | ||
6722 | if (sec != NULL && discarded_section (sec)) | |
6723 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
6724 | rel, 1, relend, howto, 0, contents); | |
6725 | ||
0e1862bb | 6726 | if (bfd_link_relocatable (info)) |
2e0488d3 | 6727 | continue; |
a06ea964 NC |
6728 | |
6729 | if (h != NULL) | |
6730 | name = h->root.root.string; | |
6731 | else | |
6732 | { | |
6733 | name = (bfd_elf_string_from_elf_section | |
6734 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
6735 | if (name == NULL || *name == '\0') | |
6736 | name = bfd_section_name (input_bfd, sec); | |
6737 | } | |
6738 | ||
6739 | if (r_symndx != 0 | |
6740 | && r_type != R_AARCH64_NONE | |
6741 | && r_type != R_AARCH64_NULL | |
6742 | && (h == NULL | |
6743 | || h->root.type == bfd_link_hash_defined | |
6744 | || h->root.type == bfd_link_hash_defweak) | |
a6bb11b2 | 6745 | && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS)) |
a06ea964 | 6746 | { |
4eca0228 | 6747 | _bfd_error_handler |
a06ea964 | 6748 | ((sym_type == STT_TLS |
695344c0 | 6749 | /* xgettext:c-format */ |
2dcf00ce | 6750 | ? _("%pB(%pA+%#" PRIx64 "): %s used with TLS symbol %s") |
695344c0 | 6751 | /* xgettext:c-format */ |
2dcf00ce | 6752 | : _("%pB(%pA+%#" PRIx64 "): %s used with non-TLS symbol %s")), |
a06ea964 | 6753 | input_bfd, |
2dcf00ce | 6754 | input_section, (uint64_t) rel->r_offset, howto->name, name); |
a06ea964 NC |
6755 | } |
6756 | ||
a06ea964 | 6757 | /* We relax only if we can see that there can be a valid transition |
07d6d2b8 AM |
6758 | from a reloc type to another. |
6759 | We call elfNN_aarch64_final_link_relocate unless we're completely | |
6760 | done, i.e., the relaxation produced the final output we want. */ | |
a06ea964 | 6761 | |
a6bb11b2 YZ |
6762 | relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, |
6763 | h, r_symndx); | |
6764 | if (relaxed_bfd_r_type != bfd_r_type) | |
a06ea964 | 6765 | { |
a6bb11b2 YZ |
6766 | bfd_r_type = relaxed_bfd_r_type; |
6767 | howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type); | |
6768 | BFD_ASSERT (howto != NULL); | |
6769 | r_type = howto->type; | |
9fca35fc TC |
6770 | r = elfNN_aarch64_tls_relax (globals, input_bfd, input_section, |
6771 | contents, rel, h); | |
a06ea964 NC |
6772 | unresolved_reloc = 0; |
6773 | } | |
6774 | else | |
6775 | r = bfd_reloc_continue; | |
6776 | ||
6777 | /* There may be multiple consecutive relocations for the | |
07d6d2b8 AM |
6778 | same offset. In that case we are supposed to treat the |
6779 | output of each relocation as the addend for the next. */ | |
a06ea964 NC |
6780 | if (rel + 1 < relend |
6781 | && rel->r_offset == rel[1].r_offset | |
cec5225b YZ |
6782 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE |
6783 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL) | |
a06ea964 NC |
6784 | save_addend = TRUE; |
6785 | else | |
6786 | save_addend = FALSE; | |
6787 | ||
6788 | if (r == bfd_reloc_continue) | |
cec5225b | 6789 | r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd, |
a06ea964 NC |
6790 | input_section, contents, rel, |
6791 | relocation, info, sec, | |
6792 | h, &unresolved_reloc, | |
1419bbe5 | 6793 | save_addend, &addend, sym); |
a06ea964 | 6794 | |
0aa13fee | 6795 | switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type)) |
a06ea964 | 6796 | { |
ce336788 | 6797 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 6798 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 6799 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 6800 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 6801 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
73f925cc | 6802 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 6803 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 6804 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
6805 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
6806 | { | |
6807 | bfd_boolean need_relocs = FALSE; | |
6808 | bfd_byte *loc; | |
6809 | int indx; | |
6810 | bfd_vma off; | |
6811 | ||
6812 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
6813 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
6814 | ||
6815 | need_relocs = | |
6dda7875 | 6816 | (!bfd_link_executable (info) || indx != 0) && |
a06ea964 NC |
6817 | (h == NULL |
6818 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6819 | || h->root.type != bfd_link_hash_undefweak); | |
6820 | ||
6821 | BFD_ASSERT (globals->root.srelgot != NULL); | |
6822 | ||
6823 | if (need_relocs) | |
6824 | { | |
6825 | Elf_Internal_Rela rela; | |
a6bb11b2 | 6826 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD)); |
a06ea964 NC |
6827 | rela.r_addend = 0; |
6828 | rela.r_offset = globals->root.sgot->output_section->vma + | |
6829 | globals->root.sgot->output_offset + off; | |
6830 | ||
6831 | ||
6832 | loc = globals->root.srelgot->contents; | |
6833 | loc += globals->root.srelgot->reloc_count++ | |
6834 | * RELOC_SIZE (htab); | |
cec5225b | 6835 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 6836 | |
f69e4920 | 6837 | bfd_reloc_code_real_type real_type = |
0aa13fee | 6838 | elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
f69e4920 JW |
6839 | |
6840 | if (real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 | |
73f925cc JW |
6841 | || real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 |
6842 | || real_type == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC) | |
77a69ff8 JW |
6843 | { |
6844 | /* For local dynamic, don't generate DTPREL in any case. | |
6845 | Initialize the DTPREL slot into zero, so we get module | |
6846 | base address when invoke runtime TLS resolver. */ | |
6847 | bfd_put_NN (output_bfd, 0, | |
6848 | globals->root.sgot->contents + off | |
6849 | + GOT_ENTRY_SIZE); | |
6850 | } | |
6851 | else if (indx == 0) | |
a06ea964 | 6852 | { |
cec5225b | 6853 | bfd_put_NN (output_bfd, |
a06ea964 NC |
6854 | relocation - dtpoff_base (info), |
6855 | globals->root.sgot->contents + off | |
6856 | + GOT_ENTRY_SIZE); | |
6857 | } | |
6858 | else | |
6859 | { | |
6860 | /* This TLS symbol is global. We emit a | |
6861 | relocation to fixup the tls offset at load | |
6862 | time. */ | |
6863 | rela.r_info = | |
a6bb11b2 | 6864 | ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL)); |
a06ea964 NC |
6865 | rela.r_addend = 0; |
6866 | rela.r_offset = | |
6867 | (globals->root.sgot->output_section->vma | |
6868 | + globals->root.sgot->output_offset + off | |
6869 | + GOT_ENTRY_SIZE); | |
6870 | ||
6871 | loc = globals->root.srelgot->contents; | |
6872 | loc += globals->root.srelgot->reloc_count++ | |
6873 | * RELOC_SIZE (globals); | |
cec5225b YZ |
6874 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
6875 | bfd_put_NN (output_bfd, (bfd_vma) 0, | |
a06ea964 NC |
6876 | globals->root.sgot->contents + off |
6877 | + GOT_ENTRY_SIZE); | |
6878 | } | |
6879 | } | |
6880 | else | |
6881 | { | |
cec5225b | 6882 | bfd_put_NN (output_bfd, (bfd_vma) 1, |
a06ea964 | 6883 | globals->root.sgot->contents + off); |
cec5225b | 6884 | bfd_put_NN (output_bfd, |
a06ea964 NC |
6885 | relocation - dtpoff_base (info), |
6886 | globals->root.sgot->contents + off | |
6887 | + GOT_ENTRY_SIZE); | |
6888 | } | |
6889 | ||
6890 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
6891 | } | |
6892 | break; | |
6893 | ||
a6bb11b2 YZ |
6894 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
6895 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
043bf05a | 6896 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
6897 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
6898 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
a06ea964 NC |
6899 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
6900 | { | |
6901 | bfd_boolean need_relocs = FALSE; | |
6902 | bfd_byte *loc; | |
6903 | int indx; | |
6904 | bfd_vma off; | |
6905 | ||
6906 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
6907 | ||
6908 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
6909 | ||
6910 | need_relocs = | |
6dda7875 | 6911 | (!bfd_link_executable (info) || indx != 0) && |
a06ea964 NC |
6912 | (h == NULL |
6913 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6914 | || h->root.type != bfd_link_hash_undefweak); | |
6915 | ||
6916 | BFD_ASSERT (globals->root.srelgot != NULL); | |
6917 | ||
6918 | if (need_relocs) | |
6919 | { | |
6920 | Elf_Internal_Rela rela; | |
6921 | ||
6922 | if (indx == 0) | |
6923 | rela.r_addend = relocation - dtpoff_base (info); | |
6924 | else | |
6925 | rela.r_addend = 0; | |
6926 | ||
a6bb11b2 | 6927 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL)); |
a06ea964 NC |
6928 | rela.r_offset = globals->root.sgot->output_section->vma + |
6929 | globals->root.sgot->output_offset + off; | |
6930 | ||
6931 | loc = globals->root.srelgot->contents; | |
6932 | loc += globals->root.srelgot->reloc_count++ | |
6933 | * RELOC_SIZE (htab); | |
6934 | ||
cec5225b | 6935 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 6936 | |
cec5225b | 6937 | bfd_put_NN (output_bfd, rela.r_addend, |
a06ea964 NC |
6938 | globals->root.sgot->contents + off); |
6939 | } | |
6940 | else | |
cec5225b | 6941 | bfd_put_NN (output_bfd, relocation - tpoff_base (info), |
a06ea964 NC |
6942 | globals->root.sgot->contents + off); |
6943 | ||
6944 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
6945 | } | |
6946 | break; | |
6947 | ||
f955cccf | 6948 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 6949 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 6950 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 6951 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
1ada945d | 6952 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
6953 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
6954 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a06ea964 NC |
6955 | if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx)) |
6956 | { | |
6957 | bfd_boolean need_relocs = FALSE; | |
6958 | int indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
6959 | bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx); | |
6960 | ||
6961 | need_relocs = (h == NULL | |
6962 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6963 | || h->root.type != bfd_link_hash_undefweak); | |
6964 | ||
6965 | BFD_ASSERT (globals->root.srelgot != NULL); | |
6966 | BFD_ASSERT (globals->root.sgot != NULL); | |
6967 | ||
6968 | if (need_relocs) | |
6969 | { | |
6970 | bfd_byte *loc; | |
6971 | Elf_Internal_Rela rela; | |
a6bb11b2 YZ |
6972 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC)); |
6973 | ||
a06ea964 NC |
6974 | rela.r_addend = 0; |
6975 | rela.r_offset = (globals->root.sgotplt->output_section->vma | |
6976 | + globals->root.sgotplt->output_offset | |
6977 | + off + globals->sgotplt_jump_table_size); | |
6978 | ||
6979 | if (indx == 0) | |
6980 | rela.r_addend = relocation - dtpoff_base (info); | |
6981 | ||
6982 | /* Allocate the next available slot in the PLT reloc | |
6983 | section to hold our R_AARCH64_TLSDESC, the next | |
6984 | available slot is determined from reloc_count, | |
6985 | which we step. But note, reloc_count was | |
6986 | artifically moved down while allocating slots for | |
6987 | real PLT relocs such that all of the PLT relocs | |
6988 | will fit above the initial reloc_count and the | |
6989 | extra stuff will fit below. */ | |
6990 | loc = globals->root.srelplt->contents; | |
6991 | loc += globals->root.srelplt->reloc_count++ | |
6992 | * RELOC_SIZE (globals); | |
6993 | ||
cec5225b | 6994 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 6995 | |
cec5225b | 6996 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
6997 | globals->root.sgotplt->contents + off + |
6998 | globals->sgotplt_jump_table_size); | |
cec5225b | 6999 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
7000 | globals->root.sgotplt->contents + off + |
7001 | globals->sgotplt_jump_table_size + | |
7002 | GOT_ENTRY_SIZE); | |
7003 | } | |
7004 | ||
7005 | symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx); | |
7006 | } | |
7007 | break; | |
a6bb11b2 YZ |
7008 | default: |
7009 | break; | |
a06ea964 NC |
7010 | } |
7011 | ||
a06ea964 | 7012 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
07d6d2b8 AM |
7013 | because such sections are not SEC_ALLOC and thus ld.so will |
7014 | not process them. */ | |
a06ea964 NC |
7015 | if (unresolved_reloc |
7016 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
7017 | && h->def_dynamic) | |
7018 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
7019 | +rel->r_offset) != (bfd_vma) - 1) | |
7020 | { | |
4eca0228 | 7021 | _bfd_error_handler |
695344c0 | 7022 | /* xgettext:c-format */ |
2dcf00ce AM |
7023 | (_("%pB(%pA+%#" PRIx64 "): " |
7024 | "unresolvable %s relocation against symbol `%s'"), | |
7025 | input_bfd, input_section, (uint64_t) rel->r_offset, howto->name, | |
a06ea964 NC |
7026 | h->root.root.string); |
7027 | return FALSE; | |
7028 | } | |
7029 | ||
7030 | if (r != bfd_reloc_ok && r != bfd_reloc_continue) | |
7031 | { | |
c674f5cd | 7032 | bfd_reloc_code_real_type real_r_type |
0aa13fee | 7033 | = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
c674f5cd | 7034 | |
a06ea964 NC |
7035 | switch (r) |
7036 | { | |
7037 | case bfd_reloc_overflow: | |
1a72702b AM |
7038 | (*info->callbacks->reloc_overflow) |
7039 | (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, | |
7040 | input_bfd, input_section, rel->r_offset); | |
c674f5cd JW |
7041 | if (real_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
7042 | || real_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
7043 | { | |
7044 | (*info->callbacks->warning) | |
7045 | (info, | |
90b6238f | 7046 | _("too many GOT entries for -fpic, " |
c674f5cd JW |
7047 | "please recompile with -fPIC"), |
7048 | name, input_bfd, input_section, rel->r_offset); | |
7049 | return FALSE; | |
7050 | } | |
027e9c75 NC |
7051 | /* Overflow can occur when a variable is referenced with a type |
7052 | that has a larger alignment than the type with which it was | |
7053 | declared. eg: | |
7054 | file1.c: extern int foo; int a (void) { return foo; } | |
7055 | file2.c: char bar, foo, baz; | |
7056 | If the variable is placed into a data section at an offset | |
7057 | that is incompatible with the larger alignment requirement | |
7058 | overflow will occur. (Strictly speaking this is not overflow | |
7059 | but rather an alignment problem, but the bfd_reloc_ error | |
7060 | enum does not have a value to cover that situation). | |
7061 | ||
7062 | Try to catch this situation here and provide a more helpful | |
7063 | error message to the user. */ | |
7064 | if (addend & ((1 << howto->rightshift) - 1) | |
7065 | /* FIXME: Are we testing all of the appropriate reloc | |
7066 | types here ? */ | |
7067 | && (real_r_type == BFD_RELOC_AARCH64_LD_LO19_PCREL | |
7068 | || real_r_type == BFD_RELOC_AARCH64_LDST16_LO12 | |
7069 | || real_r_type == BFD_RELOC_AARCH64_LDST32_LO12 | |
7070 | || real_r_type == BFD_RELOC_AARCH64_LDST64_LO12 | |
7071 | || real_r_type == BFD_RELOC_AARCH64_LDST128_LO12)) | |
7072 | { | |
7073 | info->callbacks->warning | |
90b6238f | 7074 | (info, _("one possible cause of this error is that the \ |
027e9c75 | 7075 | symbol is being referenced in the indicated code as if it had a larger \ |
90b6238f | 7076 | alignment than was declared where it was defined"), |
027e9c75 NC |
7077 | name, input_bfd, input_section, rel->r_offset); |
7078 | } | |
a06ea964 NC |
7079 | break; |
7080 | ||
7081 | case bfd_reloc_undefined: | |
1a72702b AM |
7082 | (*info->callbacks->undefined_symbol) |
7083 | (info, name, input_bfd, input_section, rel->r_offset, TRUE); | |
a06ea964 NC |
7084 | break; |
7085 | ||
7086 | case bfd_reloc_outofrange: | |
7087 | error_message = _("out of range"); | |
7088 | goto common_error; | |
7089 | ||
7090 | case bfd_reloc_notsupported: | |
7091 | error_message = _("unsupported relocation"); | |
7092 | goto common_error; | |
7093 | ||
7094 | case bfd_reloc_dangerous: | |
7095 | /* error_message should already be set. */ | |
7096 | goto common_error; | |
7097 | ||
7098 | default: | |
7099 | error_message = _("unknown error"); | |
7100 | /* Fall through. */ | |
7101 | ||
7102 | common_error: | |
7103 | BFD_ASSERT (error_message != NULL); | |
1a72702b AM |
7104 | (*info->callbacks->reloc_dangerous) |
7105 | (info, error_message, input_bfd, input_section, rel->r_offset); | |
a06ea964 NC |
7106 | break; |
7107 | } | |
7108 | } | |
027e9c75 NC |
7109 | |
7110 | if (!save_addend) | |
7111 | addend = 0; | |
a06ea964 NC |
7112 | } |
7113 | ||
7114 | return TRUE; | |
7115 | } | |
7116 | ||
7117 | /* Set the right machine number. */ | |
7118 | ||
7119 | static bfd_boolean | |
cec5225b | 7120 | elfNN_aarch64_object_p (bfd *abfd) |
a06ea964 | 7121 | { |
cec5225b YZ |
7122 | #if ARCH_SIZE == 32 |
7123 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32); | |
7124 | #else | |
a06ea964 | 7125 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64); |
cec5225b | 7126 | #endif |
a06ea964 NC |
7127 | return TRUE; |
7128 | } | |
7129 | ||
7130 | /* Function to keep AArch64 specific flags in the ELF header. */ | |
7131 | ||
7132 | static bfd_boolean | |
cec5225b | 7133 | elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags) |
a06ea964 NC |
7134 | { |
7135 | if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags) | |
7136 | { | |
7137 | } | |
7138 | else | |
7139 | { | |
7140 | elf_elfheader (abfd)->e_flags = flags; | |
7141 | elf_flags_init (abfd) = TRUE; | |
7142 | } | |
7143 | ||
7144 | return TRUE; | |
7145 | } | |
7146 | ||
a06ea964 NC |
7147 | /* Merge backend specific data from an object file to the output |
7148 | object file when linking. */ | |
7149 | ||
7150 | static bfd_boolean | |
50e03d47 | 7151 | elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
a06ea964 | 7152 | { |
50e03d47 | 7153 | bfd *obfd = info->output_bfd; |
a06ea964 NC |
7154 | flagword out_flags; |
7155 | flagword in_flags; | |
7156 | bfd_boolean flags_compatible = TRUE; | |
7157 | asection *sec; | |
7158 | ||
7159 | /* Check if we have the same endianess. */ | |
50e03d47 | 7160 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
a06ea964 NC |
7161 | return FALSE; |
7162 | ||
7163 | if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd)) | |
7164 | return TRUE; | |
7165 | ||
7166 | /* The input BFD must have had its flags initialised. */ | |
7167 | /* The following seems bogus to me -- The flags are initialized in | |
7168 | the assembler but I don't think an elf_flags_init field is | |
7169 | written into the object. */ | |
7170 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ | |
7171 | ||
7172 | in_flags = elf_elfheader (ibfd)->e_flags; | |
7173 | out_flags = elf_elfheader (obfd)->e_flags; | |
7174 | ||
7175 | if (!elf_flags_init (obfd)) | |
7176 | { | |
7177 | /* If the input is the default architecture and had the default | |
07d6d2b8 AM |
7178 | flags then do not bother setting the flags for the output |
7179 | architecture, instead allow future merges to do this. If no | |
7180 | future merges ever set these flags then they will retain their | |
7181 | uninitialised values, which surprise surprise, correspond | |
7182 | to the default values. */ | |
a06ea964 NC |
7183 | if (bfd_get_arch_info (ibfd)->the_default |
7184 | && elf_elfheader (ibfd)->e_flags == 0) | |
7185 | return TRUE; | |
7186 | ||
7187 | elf_flags_init (obfd) = TRUE; | |
7188 | elf_elfheader (obfd)->e_flags = in_flags; | |
7189 | ||
7190 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
7191 | && bfd_get_arch_info (obfd)->the_default) | |
7192 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
7193 | bfd_get_mach (ibfd)); | |
7194 | ||
7195 | return TRUE; | |
7196 | } | |
7197 | ||
7198 | /* Identical flags must be compatible. */ | |
7199 | if (in_flags == out_flags) | |
7200 | return TRUE; | |
7201 | ||
7202 | /* Check to see if the input BFD actually contains any sections. If | |
7203 | not, its flags may not have been initialised either, but it | |
7204 | cannot actually cause any incompatiblity. Do not short-circuit | |
7205 | dynamic objects; their section list may be emptied by | |
7206 | elf_link_add_object_symbols. | |
7207 | ||
7208 | Also check to see if there are no code sections in the input. | |
7209 | In this case there is no need to check for code specific flags. | |
7210 | XXX - do we need to worry about floating-point format compatability | |
7211 | in data sections ? */ | |
7212 | if (!(ibfd->flags & DYNAMIC)) | |
7213 | { | |
7214 | bfd_boolean null_input_bfd = TRUE; | |
7215 | bfd_boolean only_data_sections = TRUE; | |
7216 | ||
7217 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7218 | { | |
7219 | if ((bfd_get_section_flags (ibfd, sec) | |
7220 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
7221 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
7222 | only_data_sections = FALSE; | |
7223 | ||
7224 | null_input_bfd = FALSE; | |
7225 | break; | |
7226 | } | |
7227 | ||
7228 | if (null_input_bfd || only_data_sections) | |
7229 | return TRUE; | |
7230 | } | |
7231 | ||
7232 | return flags_compatible; | |
7233 | } | |
7234 | ||
7235 | /* Display the flags field. */ | |
7236 | ||
7237 | static bfd_boolean | |
cec5225b | 7238 | elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr) |
a06ea964 NC |
7239 | { |
7240 | FILE *file = (FILE *) ptr; | |
7241 | unsigned long flags; | |
7242 | ||
7243 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
7244 | ||
7245 | /* Print normal ELF private data. */ | |
7246 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
7247 | ||
7248 | flags = elf_elfheader (abfd)->e_flags; | |
7249 | /* Ignore init flag - it may not be set, despite the flags field | |
7250 | containing valid data. */ | |
7251 | ||
7252 | /* xgettext:c-format */ | |
7253 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
7254 | ||
7255 | if (flags) | |
7256 | fprintf (file, _("<Unrecognised flag bits set>")); | |
7257 | ||
7258 | fputc ('\n', file); | |
7259 | ||
7260 | return TRUE; | |
7261 | } | |
7262 | ||
63c1f59d AM |
7263 | /* Find dynamic relocs for H that apply to read-only sections. */ |
7264 | ||
7265 | static asection * | |
7266 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
7267 | { | |
7268 | struct elf_dyn_relocs *p; | |
7269 | ||
7270 | for (p = elf_aarch64_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
7271 | { | |
7272 | asection *s = p->sec->output_section; | |
7273 | ||
7274 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7275 | return p->sec; | |
7276 | } | |
7277 | return NULL; | |
7278 | } | |
7279 | ||
6353d82b JW |
7280 | /* Return true if we need copy relocation against EH. */ |
7281 | ||
7282 | static bfd_boolean | |
7283 | need_copy_relocation_p (struct elf_aarch64_link_hash_entry *eh) | |
7284 | { | |
7285 | struct elf_dyn_relocs *p; | |
7286 | asection *s; | |
7287 | ||
7288 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7289 | { | |
7290 | /* If there is any pc-relative reference, we need to keep copy relocation | |
7291 | to avoid propagating the relocation into runtime that current glibc | |
7292 | does not support. */ | |
7293 | if (p->pc_count) | |
7294 | return TRUE; | |
7295 | ||
7296 | s = p->sec->output_section; | |
7297 | /* Need copy relocation if it's against read-only section. */ | |
7298 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7299 | return TRUE; | |
7300 | } | |
7301 | ||
7302 | return FALSE; | |
7303 | } | |
7304 | ||
a06ea964 NC |
7305 | /* Adjust a symbol defined by a dynamic object and referenced by a |
7306 | regular object. The current definition is in some section of the | |
7307 | dynamic object, but we're not including those sections. We have to | |
7308 | change the definition to something the rest of the link can | |
7309 | understand. */ | |
7310 | ||
7311 | static bfd_boolean | |
cec5225b | 7312 | elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info, |
a06ea964 NC |
7313 | struct elf_link_hash_entry *h) |
7314 | { | |
cec5225b | 7315 | struct elf_aarch64_link_hash_table *htab; |
5474d94f | 7316 | asection *s, *srel; |
a06ea964 NC |
7317 | |
7318 | /* If this is a function, put it in the procedure linkage table. We | |
7319 | will fill in the contents of the procedure linkage table later, | |
7320 | when we know the address of the .got section. */ | |
1419bbe5 | 7321 | if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt) |
a06ea964 NC |
7322 | { |
7323 | if (h->plt.refcount <= 0 | |
1419bbe5 WN |
7324 | || (h->type != STT_GNU_IFUNC |
7325 | && (SYMBOL_CALLS_LOCAL (info, h) | |
7326 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
7327 | && h->root.type == bfd_link_hash_undefweak)))) | |
a06ea964 NC |
7328 | { |
7329 | /* This case can occur if we saw a CALL26 reloc in | |
7330 | an input file, but the symbol wasn't referred to | |
7331 | by a dynamic object or all references were | |
7332 | garbage collected. In which case we can end up | |
7333 | resolving. */ | |
7334 | h->plt.offset = (bfd_vma) - 1; | |
7335 | h->needs_plt = 0; | |
7336 | } | |
7337 | ||
7338 | return TRUE; | |
7339 | } | |
7340 | else | |
80de0c6d | 7341 | /* Otherwise, reset to -1. */ |
a06ea964 NC |
7342 | h->plt.offset = (bfd_vma) - 1; |
7343 | ||
7344 | ||
7345 | /* If this is a weak symbol, and there is a real definition, the | |
7346 | processor independent code will have arranged for us to see the | |
7347 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 7348 | if (h->is_weakalias) |
a06ea964 | 7349 | { |
60d67dc8 AM |
7350 | struct elf_link_hash_entry *def = weakdef (h); |
7351 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
7352 | h->root.u.def.section = def->root.u.def.section; | |
7353 | h->root.u.def.value = def->root.u.def.value; | |
a06ea964 | 7354 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
60d67dc8 | 7355 | h->non_got_ref = def->non_got_ref; |
a06ea964 NC |
7356 | return TRUE; |
7357 | } | |
7358 | ||
7359 | /* If we are creating a shared library, we must presume that the | |
7360 | only references to the symbol are via the global offset table. | |
7361 | For such cases we need not do anything here; the relocations will | |
7362 | be handled correctly by relocate_section. */ | |
0e1862bb | 7363 | if (bfd_link_pic (info)) |
a06ea964 NC |
7364 | return TRUE; |
7365 | ||
7366 | /* If there are no references to this symbol that do not use the | |
7367 | GOT, we don't need to generate a copy reloc. */ | |
7368 | if (!h->non_got_ref) | |
7369 | return TRUE; | |
7370 | ||
7371 | /* If -z nocopyreloc was given, we won't generate them either. */ | |
7372 | if (info->nocopyreloc) | |
7373 | { | |
7374 | h->non_got_ref = 0; | |
7375 | return TRUE; | |
7376 | } | |
7377 | ||
6353d82b JW |
7378 | if (ELIMINATE_COPY_RELOCS) |
7379 | { | |
7380 | struct elf_aarch64_link_hash_entry *eh; | |
dce2246a | 7381 | /* If we don't find any dynamic relocs in read-only sections, then |
6353d82b JW |
7382 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
7383 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
7384 | if (!need_copy_relocation_p (eh)) | |
7385 | { | |
7386 | h->non_got_ref = 0; | |
7387 | return TRUE; | |
7388 | } | |
7389 | } | |
7390 | ||
a06ea964 NC |
7391 | /* We must allocate the symbol in our .dynbss section, which will |
7392 | become part of the .bss section of the executable. There will be | |
7393 | an entry for this symbol in the .dynsym section. The dynamic | |
7394 | object will contain position independent code, so all references | |
7395 | from the dynamic object to this symbol will go through the global | |
7396 | offset table. The dynamic linker will use the .dynsym entry to | |
7397 | determine the address it must put in the global offset table, so | |
7398 | both the dynamic object and the regular object will refer to the | |
7399 | same memory location for the variable. */ | |
7400 | ||
cec5225b | 7401 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7402 | |
7403 | /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker | |
7404 | to copy the initial value out of the dynamic object and into the | |
7405 | runtime process image. */ | |
5474d94f AM |
7406 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
7407 | { | |
7408 | s = htab->root.sdynrelro; | |
7409 | srel = htab->root.sreldynrelro; | |
7410 | } | |
7411 | else | |
7412 | { | |
7413 | s = htab->root.sdynbss; | |
7414 | srel = htab->root.srelbss; | |
7415 | } | |
a06ea964 NC |
7416 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
7417 | { | |
5474d94f | 7418 | srel->size += RELOC_SIZE (htab); |
a06ea964 NC |
7419 | h->needs_copy = 1; |
7420 | } | |
7421 | ||
6cabe1ea | 7422 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
a06ea964 NC |
7423 | |
7424 | } | |
7425 | ||
7426 | static bfd_boolean | |
cec5225b | 7427 | elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number) |
a06ea964 NC |
7428 | { |
7429 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 7430 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
7431 | if (locals == NULL) |
7432 | { | |
7433 | locals = (struct elf_aarch64_local_symbol *) | |
7434 | bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol)); | |
7435 | if (locals == NULL) | |
7436 | return FALSE; | |
cec5225b | 7437 | elf_aarch64_locals (abfd) = locals; |
a06ea964 NC |
7438 | } |
7439 | return TRUE; | |
7440 | } | |
7441 | ||
cc0efaa8 MS |
7442 | /* Create the .got section to hold the global offset table. */ |
7443 | ||
7444 | static bfd_boolean | |
7445 | aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) | |
7446 | { | |
7447 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7448 | flagword flags; | |
7449 | asection *s; | |
7450 | struct elf_link_hash_entry *h; | |
7451 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
7452 | ||
7453 | /* This function may be called more than once. */ | |
ce558b89 | 7454 | if (htab->sgot != NULL) |
cc0efaa8 MS |
7455 | return TRUE; |
7456 | ||
7457 | flags = bed->dynamic_sec_flags; | |
7458 | ||
7459 | s = bfd_make_section_anyway_with_flags (abfd, | |
7460 | (bed->rela_plts_and_copies_p | |
7461 | ? ".rela.got" : ".rel.got"), | |
7462 | (bed->dynamic_sec_flags | |
7463 | | SEC_READONLY)); | |
7464 | if (s == NULL | |
7465 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
7466 | return FALSE; | |
7467 | htab->srelgot = s; | |
7468 | ||
7469 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); | |
7470 | if (s == NULL | |
7471 | || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
7472 | return FALSE; | |
7473 | htab->sgot = s; | |
7474 | htab->sgot->size += GOT_ENTRY_SIZE; | |
7475 | ||
7476 | if (bed->want_got_sym) | |
7477 | { | |
7478 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
7479 | (or .got.plt) section. We don't do this in the linker script | |
7480 | because we don't want to define the symbol if we are not creating | |
7481 | a global offset table. */ | |
7482 | h = _bfd_elf_define_linkage_sym (abfd, info, s, | |
7483 | "_GLOBAL_OFFSET_TABLE_"); | |
7484 | elf_hash_table (info)->hgot = h; | |
7485 | if (h == NULL) | |
7486 | return FALSE; | |
7487 | } | |
7488 | ||
7489 | if (bed->want_got_plt) | |
7490 | { | |
7491 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); | |
7492 | if (s == NULL | |
7493 | || !bfd_set_section_alignment (abfd, s, | |
7494 | bed->s->log_file_align)) | |
7495 | return FALSE; | |
7496 | htab->sgotplt = s; | |
7497 | } | |
7498 | ||
7499 | /* The first bit of the global offset table is the header. */ | |
7500 | s->size += bed->got_header_size; | |
7501 | ||
7502 | return TRUE; | |
7503 | } | |
7504 | ||
a06ea964 NC |
7505 | /* Look through the relocs for a section during the first phase. */ |
7506 | ||
7507 | static bfd_boolean | |
cec5225b | 7508 | elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
a06ea964 NC |
7509 | asection *sec, const Elf_Internal_Rela *relocs) |
7510 | { | |
7511 | Elf_Internal_Shdr *symtab_hdr; | |
7512 | struct elf_link_hash_entry **sym_hashes; | |
7513 | const Elf_Internal_Rela *rel; | |
7514 | const Elf_Internal_Rela *rel_end; | |
7515 | asection *sreloc; | |
7516 | ||
cec5225b | 7517 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 7518 | |
0e1862bb | 7519 | if (bfd_link_relocatable (info)) |
a06ea964 NC |
7520 | return TRUE; |
7521 | ||
7522 | BFD_ASSERT (is_aarch64_elf (abfd)); | |
7523 | ||
cec5225b | 7524 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7525 | sreloc = NULL; |
7526 | ||
7527 | symtab_hdr = &elf_symtab_hdr (abfd); | |
7528 | sym_hashes = elf_sym_hashes (abfd); | |
a06ea964 NC |
7529 | |
7530 | rel_end = relocs + sec->reloc_count; | |
7531 | for (rel = relocs; rel < rel_end; rel++) | |
7532 | { | |
7533 | struct elf_link_hash_entry *h; | |
d42c267e | 7534 | unsigned int r_symndx; |
a06ea964 | 7535 | unsigned int r_type; |
a6bb11b2 | 7536 | bfd_reloc_code_real_type bfd_r_type; |
1419bbe5 | 7537 | Elf_Internal_Sym *isym; |
a06ea964 | 7538 | |
cec5225b YZ |
7539 | r_symndx = ELFNN_R_SYM (rel->r_info); |
7540 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 NC |
7541 | |
7542 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
7543 | { | |
695344c0 | 7544 | /* xgettext:c-format */ |
871b3ab2 | 7545 | _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd, r_symndx); |
a06ea964 NC |
7546 | return FALSE; |
7547 | } | |
7548 | ||
ed5acf27 | 7549 | if (r_symndx < symtab_hdr->sh_info) |
1419bbe5 WN |
7550 | { |
7551 | /* A local symbol. */ | |
7552 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
7553 | abfd, r_symndx); | |
7554 | if (isym == NULL) | |
7555 | return FALSE; | |
7556 | ||
7557 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
7558 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
7559 | { | |
7560 | h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, | |
7561 | TRUE); | |
7562 | if (h == NULL) | |
7563 | return FALSE; | |
7564 | ||
7565 | /* Fake a STT_GNU_IFUNC symbol. */ | |
7566 | h->type = STT_GNU_IFUNC; | |
7567 | h->def_regular = 1; | |
7568 | h->ref_regular = 1; | |
7569 | h->forced_local = 1; | |
7570 | h->root.type = bfd_link_hash_defined; | |
7571 | } | |
7572 | else | |
7573 | h = NULL; | |
7574 | } | |
a06ea964 NC |
7575 | else |
7576 | { | |
7577 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
7578 | while (h->root.type == bfd_link_hash_indirect | |
7579 | || h->root.type == bfd_link_hash_warning) | |
7580 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7581 | } | |
7582 | ||
7583 | /* Could be done earlier, if h were already available. */ | |
a6bb11b2 | 7584 | bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx); |
a06ea964 | 7585 | |
1419bbe5 WN |
7586 | if (h != NULL) |
7587 | { | |
18f822a0 JW |
7588 | /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. |
7589 | This shows up in particular in an R_AARCH64_PREL64 in large model | |
7590 | when calculating the pc-relative address to .got section which is | |
7591 | used to initialize the gp register. */ | |
7592 | if (h->root.root.string | |
7593 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
7594 | { | |
7595 | if (htab->root.dynobj == NULL) | |
7596 | htab->root.dynobj = abfd; | |
7597 | ||
7598 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
7599 | return FALSE; | |
7600 | ||
7601 | BFD_ASSERT (h == htab->root.hgot); | |
7602 | } | |
7603 | ||
1419bbe5 WN |
7604 | /* Create the ifunc sections for static executables. If we |
7605 | never see an indirect function symbol nor we are building | |
7606 | a static executable, those sections will be empty and | |
7607 | won't appear in output. */ | |
7608 | switch (bfd_r_type) | |
7609 | { | |
7610 | default: | |
7611 | break; | |
7612 | ||
ce336788 JW |
7613 | case BFD_RELOC_AARCH64_ADD_LO12: |
7614 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: | |
7615 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
1419bbe5 | 7616 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 7617 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
1419bbe5 | 7618 | case BFD_RELOC_AARCH64_JUMP26: |
7018c030 | 7619 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
1419bbe5 | 7620 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 7621 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 7622 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
1419bbe5 | 7623 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 7624 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 7625 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
ce336788 | 7626 | case BFD_RELOC_AARCH64_NN: |
1419bbe5 WN |
7627 | if (htab->root.dynobj == NULL) |
7628 | htab->root.dynobj = abfd; | |
7629 | if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info)) | |
7630 | return FALSE; | |
7631 | break; | |
7632 | } | |
7633 | ||
2d0ca824 | 7634 | /* It is referenced by a non-shared object. */ |
1419bbe5 | 7635 | h->ref_regular = 1; |
1419bbe5 WN |
7636 | } |
7637 | ||
a6bb11b2 | 7638 | switch (bfd_r_type) |
a06ea964 | 7639 | { |
79e74192 RL |
7640 | case BFD_RELOC_AARCH64_16: |
7641 | #if ARCH_SIZE == 64 | |
7642 | case BFD_RELOC_AARCH64_32: | |
7643 | #endif | |
279b2f94 | 7644 | if (bfd_link_pic (info) && (sec->flags & SEC_ALLOC) != 0) |
79e74192 | 7645 | { |
279b2f94 RL |
7646 | if (h != NULL |
7647 | /* This is an absolute symbol. It represents a value instead | |
7648 | of an address. */ | |
c691de6a | 7649 | && (bfd_is_abs_symbol (&h->root) |
279b2f94 RL |
7650 | /* This is an undefined symbol. */ |
7651 | || h->root.type == bfd_link_hash_undefined)) | |
7652 | break; | |
7653 | ||
7654 | /* For local symbols, defined global symbols in a non-ABS section, | |
7655 | it is assumed that the value is an address. */ | |
79e74192 RL |
7656 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; |
7657 | _bfd_error_handler | |
7658 | /* xgettext:c-format */ | |
871b3ab2 | 7659 | (_("%pB: relocation %s against `%s' can not be used when making " |
79e74192 RL |
7660 | "a shared object"), |
7661 | abfd, elfNN_aarch64_howto_table[howto_index].name, | |
7662 | (h) ? h->root.root.string : "a local symbol"); | |
7663 | bfd_set_error (bfd_error_bad_value); | |
7664 | return FALSE; | |
7665 | } | |
7666 | else | |
7667 | break; | |
7668 | ||
6353d82b JW |
7669 | case BFD_RELOC_AARCH64_MOVW_G0_NC: |
7670 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
7671 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
7672 | case BFD_RELOC_AARCH64_MOVW_G3: | |
7673 | if (bfd_link_pic (info)) | |
7674 | { | |
7675 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
7676 | _bfd_error_handler | |
7677 | /* xgettext:c-format */ | |
871b3ab2 | 7678 | (_("%pB: relocation %s against `%s' can not be used when making " |
6353d82b JW |
7679 | "a shared object; recompile with -fPIC"), |
7680 | abfd, elfNN_aarch64_howto_table[howto_index].name, | |
7681 | (h) ? h->root.root.string : "a local symbol"); | |
7682 | bfd_set_error (bfd_error_bad_value); | |
7683 | return FALSE; | |
7684 | } | |
7685 | /* Fall through. */ | |
7686 | ||
7687 | case BFD_RELOC_AARCH64_16_PCREL: | |
7688 | case BFD_RELOC_AARCH64_32_PCREL: | |
7689 | case BFD_RELOC_AARCH64_64_PCREL: | |
7690 | case BFD_RELOC_AARCH64_ADD_LO12: | |
7691 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: | |
7692 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
7693 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
7694 | case BFD_RELOC_AARCH64_LDST128_LO12: | |
7695 | case BFD_RELOC_AARCH64_LDST16_LO12: | |
7696 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
7697 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
7698 | case BFD_RELOC_AARCH64_LDST8_LO12: | |
7699 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
7700 | if (h == NULL || bfd_link_pic (info)) | |
7701 | break; | |
7702 | /* Fall through. */ | |
7703 | ||
a6bb11b2 | 7704 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
7705 | |
7706 | /* We don't need to handle relocs into sections not going into | |
7707 | the "real" output. */ | |
7708 | if ((sec->flags & SEC_ALLOC) == 0) | |
7709 | break; | |
7710 | ||
7711 | if (h != NULL) | |
7712 | { | |
0e1862bb | 7713 | if (!bfd_link_pic (info)) |
a06ea964 NC |
7714 | h->non_got_ref = 1; |
7715 | ||
7716 | h->plt.refcount += 1; | |
7717 | h->pointer_equality_needed = 1; | |
7718 | } | |
7719 | ||
7720 | /* No need to do anything if we're not creating a shared | |
7721 | object. */ | |
6353d82b JW |
7722 | if (!(bfd_link_pic (info) |
7723 | /* If on the other hand, we are creating an executable, we | |
7724 | may need to keep relocations for symbols satisfied by a | |
7725 | dynamic library if we manage to avoid copy relocs for the | |
7726 | symbol. | |
7727 | ||
7728 | NOTE: Currently, there is no support of copy relocs | |
7729 | elimination on pc-relative relocation types, because there is | |
7730 | no dynamic relocation support for them in glibc. We still | |
7731 | record the dynamic symbol reference for them. This is | |
7732 | because one symbol may be referenced by both absolute | |
7733 | relocation (for example, BFD_RELOC_AARCH64_NN) and | |
7734 | pc-relative relocation. We need full symbol reference | |
7735 | information to make correct decision later in | |
7736 | elfNN_aarch64_adjust_dynamic_symbol. */ | |
7737 | || (ELIMINATE_COPY_RELOCS | |
7738 | && !bfd_link_pic (info) | |
7739 | && h != NULL | |
7740 | && (h->root.type == bfd_link_hash_defweak | |
7741 | || !h->def_regular)))) | |
a06ea964 NC |
7742 | break; |
7743 | ||
7744 | { | |
7745 | struct elf_dyn_relocs *p; | |
7746 | struct elf_dyn_relocs **head; | |
6353d82b | 7747 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; |
a06ea964 NC |
7748 | |
7749 | /* We must copy these reloc types into the output file. | |
7750 | Create a reloc section in dynobj and make room for | |
7751 | this reloc. */ | |
7752 | if (sreloc == NULL) | |
7753 | { | |
7754 | if (htab->root.dynobj == NULL) | |
7755 | htab->root.dynobj = abfd; | |
7756 | ||
7757 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
0608afa7 | 7758 | (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE); |
a06ea964 NC |
7759 | |
7760 | if (sreloc == NULL) | |
7761 | return FALSE; | |
7762 | } | |
7763 | ||
7764 | /* If this is a global symbol, we count the number of | |
7765 | relocations we need for this symbol. */ | |
7766 | if (h != NULL) | |
7767 | { | |
cec5225b YZ |
7768 | struct elf_aarch64_link_hash_entry *eh; |
7769 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
7770 | head = &eh->dyn_relocs; |
7771 | } | |
7772 | else | |
7773 | { | |
7774 | /* Track dynamic relocs needed for local syms too. | |
7775 | We really need local syms available to do this | |
7776 | easily. Oh well. */ | |
7777 | ||
7778 | asection *s; | |
7779 | void **vpp; | |
a06ea964 NC |
7780 | |
7781 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
7782 | abfd, r_symndx); | |
7783 | if (isym == NULL) | |
7784 | return FALSE; | |
7785 | ||
7786 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
7787 | if (s == NULL) | |
7788 | s = sec; | |
7789 | ||
7790 | /* Beware of type punned pointers vs strict aliasing | |
7791 | rules. */ | |
7792 | vpp = &(elf_section_data (s)->local_dynrel); | |
7793 | head = (struct elf_dyn_relocs **) vpp; | |
7794 | } | |
7795 | ||
7796 | p = *head; | |
7797 | if (p == NULL || p->sec != sec) | |
7798 | { | |
7799 | bfd_size_type amt = sizeof *p; | |
7800 | p = ((struct elf_dyn_relocs *) | |
7801 | bfd_zalloc (htab->root.dynobj, amt)); | |
7802 | if (p == NULL) | |
7803 | return FALSE; | |
7804 | p->next = *head; | |
7805 | *head = p; | |
7806 | p->sec = sec; | |
7807 | } | |
7808 | ||
7809 | p->count += 1; | |
7810 | ||
6353d82b JW |
7811 | if (elfNN_aarch64_howto_table[howto_index].pc_relative) |
7812 | p->pc_count += 1; | |
a06ea964 NC |
7813 | } |
7814 | break; | |
7815 | ||
7816 | /* RR: We probably want to keep a consistency check that | |
7817 | there are no dangling GOT_PAGE relocs. */ | |
a6bb11b2 | 7818 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
7bcccb57 | 7819 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
7018c030 | 7820 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
7bcccb57 | 7821 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 7822 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 7823 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
7bcccb57 | 7824 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 7825 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 7826 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
f955cccf | 7827 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
7bcccb57 | 7828 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 7829 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
7bcccb57 | 7830 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
f955cccf | 7831 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
1ada945d | 7832 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
7833 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
7834 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a6bb11b2 | 7835 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
7bcccb57 | 7836 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 7837 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 7838 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 7839 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
a6bb11b2 | 7840 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 7841 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
7bcccb57 | 7842 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 7843 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
7844 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
7845 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
73f925cc | 7846 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 7847 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 7848 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
7849 | { |
7850 | unsigned got_type; | |
7851 | unsigned old_got_type; | |
7852 | ||
a6bb11b2 | 7853 | got_type = aarch64_reloc_got_type (bfd_r_type); |
a06ea964 NC |
7854 | |
7855 | if (h) | |
7856 | { | |
7857 | h->got.refcount += 1; | |
cec5225b | 7858 | old_got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
7859 | } |
7860 | else | |
7861 | { | |
7862 | struct elf_aarch64_local_symbol *locals; | |
7863 | ||
cec5225b | 7864 | if (!elfNN_aarch64_allocate_local_symbols |
a06ea964 NC |
7865 | (abfd, symtab_hdr->sh_info)) |
7866 | return FALSE; | |
7867 | ||
cec5225b | 7868 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
7869 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
7870 | locals[r_symndx].got_refcount += 1; | |
7871 | old_got_type = locals[r_symndx].got_type; | |
7872 | } | |
7873 | ||
7874 | /* If a variable is accessed with both general dynamic TLS | |
7875 | methods, two slots may be created. */ | |
7876 | if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type)) | |
7877 | got_type |= old_got_type; | |
7878 | ||
7879 | /* We will already have issued an error message if there | |
7880 | is a TLS/non-TLS mismatch, based on the symbol type. | |
7881 | So just combine any TLS types needed. */ | |
7882 | if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL | |
7883 | && got_type != GOT_NORMAL) | |
7884 | got_type |= old_got_type; | |
7885 | ||
7886 | /* If the symbol is accessed by both IE and GD methods, we | |
7887 | are able to relax. Turn off the GD flag, without | |
7888 | messing up with any other kind of TLS types that may be | |
7889 | involved. */ | |
7890 | if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type)) | |
7891 | got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD); | |
7892 | ||
7893 | if (old_got_type != got_type) | |
7894 | { | |
7895 | if (h != NULL) | |
cec5225b | 7896 | elf_aarch64_hash_entry (h)->got_type = got_type; |
a06ea964 NC |
7897 | else |
7898 | { | |
7899 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 7900 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
7901 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
7902 | locals[r_symndx].got_type = got_type; | |
7903 | } | |
7904 | } | |
7905 | ||
cc0efaa8 MS |
7906 | if (htab->root.dynobj == NULL) |
7907 | htab->root.dynobj = abfd; | |
7908 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
7909 | return FALSE; | |
a06ea964 NC |
7910 | break; |
7911 | } | |
7912 | ||
a6bb11b2 YZ |
7913 | case BFD_RELOC_AARCH64_CALL26: |
7914 | case BFD_RELOC_AARCH64_JUMP26: | |
a06ea964 NC |
7915 | /* If this is a local symbol then we resolve it |
7916 | directly without creating a PLT entry. */ | |
7917 | if (h == NULL) | |
7918 | continue; | |
7919 | ||
7920 | h->needs_plt = 1; | |
1419bbe5 WN |
7921 | if (h->plt.refcount <= 0) |
7922 | h->plt.refcount = 1; | |
7923 | else | |
7924 | h->plt.refcount += 1; | |
a06ea964 | 7925 | break; |
a6bb11b2 YZ |
7926 | |
7927 | default: | |
7928 | break; | |
a06ea964 NC |
7929 | } |
7930 | } | |
a6bb11b2 | 7931 | |
a06ea964 NC |
7932 | return TRUE; |
7933 | } | |
7934 | ||
7935 | /* Treat mapping symbols as special target symbols. */ | |
7936 | ||
7937 | static bfd_boolean | |
cec5225b | 7938 | elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
7939 | asymbol *sym) |
7940 | { | |
7941 | return bfd_is_aarch64_special_symbol_name (sym->name, | |
7942 | BFD_AARCH64_SPECIAL_SYM_TYPE_ANY); | |
7943 | } | |
7944 | ||
7945 | /* This is a copy of elf_find_function () from elf.c except that | |
7946 | AArch64 mapping symbols are ignored when looking for function names. */ | |
7947 | ||
7948 | static bfd_boolean | |
7949 | aarch64_elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, | |
a06ea964 | 7950 | asymbol **symbols, |
fb167eb2 | 7951 | asection *section, |
a06ea964 NC |
7952 | bfd_vma offset, |
7953 | const char **filename_ptr, | |
7954 | const char **functionname_ptr) | |
7955 | { | |
7956 | const char *filename = NULL; | |
7957 | asymbol *func = NULL; | |
7958 | bfd_vma low_func = 0; | |
7959 | asymbol **p; | |
7960 | ||
7961 | for (p = symbols; *p != NULL; p++) | |
7962 | { | |
7963 | elf_symbol_type *q; | |
7964 | ||
7965 | q = (elf_symbol_type *) * p; | |
7966 | ||
7967 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) | |
7968 | { | |
7969 | default: | |
7970 | break; | |
7971 | case STT_FILE: | |
7972 | filename = bfd_asymbol_name (&q->symbol); | |
7973 | break; | |
7974 | case STT_FUNC: | |
7975 | case STT_NOTYPE: | |
7976 | /* Skip mapping symbols. */ | |
7977 | if ((q->symbol.flags & BSF_LOCAL) | |
7978 | && (bfd_is_aarch64_special_symbol_name | |
7979 | (q->symbol.name, BFD_AARCH64_SPECIAL_SYM_TYPE_ANY))) | |
7980 | continue; | |
7981 | /* Fall through. */ | |
7982 | if (bfd_get_section (&q->symbol) == section | |
7983 | && q->symbol.value >= low_func && q->symbol.value <= offset) | |
7984 | { | |
7985 | func = (asymbol *) q; | |
7986 | low_func = q->symbol.value; | |
7987 | } | |
7988 | break; | |
7989 | } | |
7990 | } | |
7991 | ||
7992 | if (func == NULL) | |
7993 | return FALSE; | |
7994 | ||
7995 | if (filename_ptr) | |
7996 | *filename_ptr = filename; | |
7997 | if (functionname_ptr) | |
7998 | *functionname_ptr = bfd_asymbol_name (func); | |
7999 | ||
8000 | return TRUE; | |
8001 | } | |
8002 | ||
8003 | ||
8004 | /* Find the nearest line to a particular section and offset, for error | |
8005 | reporting. This code is a duplicate of the code in elf.c, except | |
8006 | that it uses aarch64_elf_find_function. */ | |
8007 | ||
8008 | static bfd_boolean | |
cec5225b | 8009 | elfNN_aarch64_find_nearest_line (bfd *abfd, |
a06ea964 | 8010 | asymbol **symbols, |
fb167eb2 | 8011 | asection *section, |
a06ea964 NC |
8012 | bfd_vma offset, |
8013 | const char **filename_ptr, | |
8014 | const char **functionname_ptr, | |
fb167eb2 AM |
8015 | unsigned int *line_ptr, |
8016 | unsigned int *discriminator_ptr) | |
a06ea964 NC |
8017 | { |
8018 | bfd_boolean found = FALSE; | |
8019 | ||
fb167eb2 | 8020 | if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset, |
a06ea964 | 8021 | filename_ptr, functionname_ptr, |
fb167eb2 AM |
8022 | line_ptr, discriminator_ptr, |
8023 | dwarf_debug_sections, 0, | |
a06ea964 NC |
8024 | &elf_tdata (abfd)->dwarf2_find_line_info)) |
8025 | { | |
8026 | if (!*functionname_ptr) | |
fb167eb2 | 8027 | aarch64_elf_find_function (abfd, symbols, section, offset, |
a06ea964 NC |
8028 | *filename_ptr ? NULL : filename_ptr, |
8029 | functionname_ptr); | |
8030 | ||
8031 | return TRUE; | |
8032 | } | |
8033 | ||
fb167eb2 AM |
8034 | /* Skip _bfd_dwarf1_find_nearest_line since no known AArch64 |
8035 | toolchain uses DWARF1. */ | |
8036 | ||
a06ea964 NC |
8037 | if (!_bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, |
8038 | &found, filename_ptr, | |
8039 | functionname_ptr, line_ptr, | |
8040 | &elf_tdata (abfd)->line_info)) | |
8041 | return FALSE; | |
8042 | ||
8043 | if (found && (*functionname_ptr || *line_ptr)) | |
8044 | return TRUE; | |
8045 | ||
8046 | if (symbols == NULL) | |
8047 | return FALSE; | |
8048 | ||
fb167eb2 | 8049 | if (!aarch64_elf_find_function (abfd, symbols, section, offset, |
a06ea964 NC |
8050 | filename_ptr, functionname_ptr)) |
8051 | return FALSE; | |
8052 | ||
8053 | *line_ptr = 0; | |
8054 | return TRUE; | |
8055 | } | |
8056 | ||
8057 | static bfd_boolean | |
cec5225b | 8058 | elfNN_aarch64_find_inliner_info (bfd *abfd, |
a06ea964 NC |
8059 | const char **filename_ptr, |
8060 | const char **functionname_ptr, | |
8061 | unsigned int *line_ptr) | |
8062 | { | |
8063 | bfd_boolean found; | |
8064 | found = _bfd_dwarf2_find_inliner_info | |
8065 | (abfd, filename_ptr, | |
8066 | functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info); | |
8067 | return found; | |
8068 | } | |
8069 | ||
8070 | ||
8071 | static void | |
cec5225b | 8072 | elfNN_aarch64_post_process_headers (bfd *abfd, |
1419bbe5 | 8073 | struct bfd_link_info *link_info) |
a06ea964 NC |
8074 | { |
8075 | Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */ | |
8076 | ||
8077 | i_ehdrp = elf_elfheader (abfd); | |
a06ea964 | 8078 | i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION; |
1419bbe5 | 8079 | |
78245035 | 8080 | _bfd_elf_post_process_headers (abfd, link_info); |
a06ea964 NC |
8081 | } |
8082 | ||
8083 | static enum elf_reloc_type_class | |
cec5225b | 8084 | elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
7e612e98 AM |
8085 | const asection *rel_sec ATTRIBUTE_UNUSED, |
8086 | const Elf_Internal_Rela *rela) | |
a06ea964 | 8087 | { |
f2e6a843 SN |
8088 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); |
8089 | ||
8090 | if (htab->root.dynsym != NULL | |
8091 | && htab->root.dynsym->contents != NULL) | |
8092 | { | |
8093 | /* Check relocation against STT_GNU_IFUNC symbol if there are | |
8094 | dynamic symbols. */ | |
8095 | bfd *abfd = info->output_bfd; | |
8096 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8097 | unsigned long r_symndx = ELFNN_R_SYM (rela->r_info); | |
8098 | if (r_symndx != STN_UNDEF) | |
8099 | { | |
8100 | Elf_Internal_Sym sym; | |
8101 | if (!bed->s->swap_symbol_in (abfd, | |
8102 | (htab->root.dynsym->contents | |
8103 | + r_symndx * bed->s->sizeof_sym), | |
8104 | 0, &sym)) | |
8105 | { | |
8106 | /* xgettext:c-format */ | |
871b3ab2 | 8107 | _bfd_error_handler (_("%pB symbol number %lu references" |
f2e6a843 SN |
8108 | " nonexistent SHT_SYMTAB_SHNDX section"), |
8109 | abfd, r_symndx); | |
8110 | /* Ideally an error class should be returned here. */ | |
8111 | } | |
8112 | else if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC) | |
8113 | return reloc_class_ifunc; | |
8114 | } | |
8115 | } | |
8116 | ||
cec5225b | 8117 | switch ((int) ELFNN_R_TYPE (rela->r_info)) |
a06ea964 | 8118 | { |
f2e6a843 SN |
8119 | case AARCH64_R (IRELATIVE): |
8120 | return reloc_class_ifunc; | |
a6bb11b2 | 8121 | case AARCH64_R (RELATIVE): |
a06ea964 | 8122 | return reloc_class_relative; |
a6bb11b2 | 8123 | case AARCH64_R (JUMP_SLOT): |
a06ea964 | 8124 | return reloc_class_plt; |
a6bb11b2 | 8125 | case AARCH64_R (COPY): |
a06ea964 NC |
8126 | return reloc_class_copy; |
8127 | default: | |
8128 | return reloc_class_normal; | |
8129 | } | |
8130 | } | |
8131 | ||
a06ea964 NC |
8132 | /* Handle an AArch64 specific section when reading an object file. This is |
8133 | called when bfd_section_from_shdr finds a section with an unknown | |
8134 | type. */ | |
8135 | ||
8136 | static bfd_boolean | |
cec5225b | 8137 | elfNN_aarch64_section_from_shdr (bfd *abfd, |
a06ea964 NC |
8138 | Elf_Internal_Shdr *hdr, |
8139 | const char *name, int shindex) | |
8140 | { | |
8141 | /* There ought to be a place to keep ELF backend specific flags, but | |
8142 | at the moment there isn't one. We just keep track of the | |
8143 | sections by their name, instead. Fortunately, the ABI gives | |
8144 | names for all the AArch64 specific sections, so we will probably get | |
8145 | away with this. */ | |
8146 | switch (hdr->sh_type) | |
8147 | { | |
8148 | case SHT_AARCH64_ATTRIBUTES: | |
8149 | break; | |
8150 | ||
8151 | default: | |
8152 | return FALSE; | |
8153 | } | |
8154 | ||
8155 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
8156 | return FALSE; | |
8157 | ||
8158 | return TRUE; | |
8159 | } | |
8160 | ||
8161 | /* A structure used to record a list of sections, independently | |
8162 | of the next and prev fields in the asection structure. */ | |
8163 | typedef struct section_list | |
8164 | { | |
8165 | asection *sec; | |
8166 | struct section_list *next; | |
8167 | struct section_list *prev; | |
8168 | } | |
8169 | section_list; | |
8170 | ||
8171 | /* Unfortunately we need to keep a list of sections for which | |
8172 | an _aarch64_elf_section_data structure has been allocated. This | |
cec5225b | 8173 | is because it is possible for functions like elfNN_aarch64_write_section |
a06ea964 NC |
8174 | to be called on a section which has had an elf_data_structure |
8175 | allocated for it (and so the used_by_bfd field is valid) but | |
8176 | for which the AArch64 extended version of this structure - the | |
8177 | _aarch64_elf_section_data structure - has not been allocated. */ | |
8178 | static section_list *sections_with_aarch64_elf_section_data = NULL; | |
8179 | ||
8180 | static void | |
8181 | record_section_with_aarch64_elf_section_data (asection *sec) | |
8182 | { | |
8183 | struct section_list *entry; | |
8184 | ||
8185 | entry = bfd_malloc (sizeof (*entry)); | |
8186 | if (entry == NULL) | |
8187 | return; | |
8188 | entry->sec = sec; | |
8189 | entry->next = sections_with_aarch64_elf_section_data; | |
8190 | entry->prev = NULL; | |
8191 | if (entry->next != NULL) | |
8192 | entry->next->prev = entry; | |
8193 | sections_with_aarch64_elf_section_data = entry; | |
8194 | } | |
8195 | ||
8196 | static struct section_list * | |
8197 | find_aarch64_elf_section_entry (asection *sec) | |
8198 | { | |
8199 | struct section_list *entry; | |
8200 | static struct section_list *last_entry = NULL; | |
8201 | ||
8202 | /* This is a short cut for the typical case where the sections are added | |
8203 | to the sections_with_aarch64_elf_section_data list in forward order and | |
8204 | then looked up here in backwards order. This makes a real difference | |
8205 | to the ld-srec/sec64k.exp linker test. */ | |
8206 | entry = sections_with_aarch64_elf_section_data; | |
8207 | if (last_entry != NULL) | |
8208 | { | |
8209 | if (last_entry->sec == sec) | |
8210 | entry = last_entry; | |
8211 | else if (last_entry->next != NULL && last_entry->next->sec == sec) | |
8212 | entry = last_entry->next; | |
8213 | } | |
8214 | ||
8215 | for (; entry; entry = entry->next) | |
8216 | if (entry->sec == sec) | |
8217 | break; | |
8218 | ||
8219 | if (entry) | |
8220 | /* Record the entry prior to this one - it is the entry we are | |
8221 | most likely to want to locate next time. Also this way if we | |
8222 | have been called from | |
8223 | unrecord_section_with_aarch64_elf_section_data () we will not | |
8224 | be caching a pointer that is about to be freed. */ | |
8225 | last_entry = entry->prev; | |
8226 | ||
8227 | return entry; | |
8228 | } | |
8229 | ||
8230 | static void | |
8231 | unrecord_section_with_aarch64_elf_section_data (asection *sec) | |
8232 | { | |
8233 | struct section_list *entry; | |
8234 | ||
8235 | entry = find_aarch64_elf_section_entry (sec); | |
8236 | ||
8237 | if (entry) | |
8238 | { | |
8239 | if (entry->prev != NULL) | |
8240 | entry->prev->next = entry->next; | |
8241 | if (entry->next != NULL) | |
8242 | entry->next->prev = entry->prev; | |
8243 | if (entry == sections_with_aarch64_elf_section_data) | |
8244 | sections_with_aarch64_elf_section_data = entry->next; | |
8245 | free (entry); | |
8246 | } | |
8247 | } | |
8248 | ||
8249 | ||
8250 | typedef struct | |
8251 | { | |
8252 | void *finfo; | |
8253 | struct bfd_link_info *info; | |
8254 | asection *sec; | |
8255 | int sec_shndx; | |
8256 | int (*func) (void *, const char *, Elf_Internal_Sym *, | |
8257 | asection *, struct elf_link_hash_entry *); | |
8258 | } output_arch_syminfo; | |
8259 | ||
8260 | enum map_symbol_type | |
8261 | { | |
8262 | AARCH64_MAP_INSN, | |
8263 | AARCH64_MAP_DATA | |
8264 | }; | |
8265 | ||
8266 | ||
8267 | /* Output a single mapping symbol. */ | |
8268 | ||
8269 | static bfd_boolean | |
cec5225b | 8270 | elfNN_aarch64_output_map_sym (output_arch_syminfo *osi, |
a06ea964 NC |
8271 | enum map_symbol_type type, bfd_vma offset) |
8272 | { | |
8273 | static const char *names[2] = { "$x", "$d" }; | |
8274 | Elf_Internal_Sym sym; | |
8275 | ||
8276 | sym.st_value = (osi->sec->output_section->vma | |
8277 | + osi->sec->output_offset + offset); | |
8278 | sym.st_size = 0; | |
8279 | sym.st_other = 0; | |
8280 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
8281 | sym.st_shndx = osi->sec_shndx; | |
8282 | return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1; | |
8283 | } | |
8284 | ||
a06ea964 NC |
8285 | /* Output a single local symbol for a generated stub. */ |
8286 | ||
8287 | static bfd_boolean | |
cec5225b | 8288 | elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name, |
a06ea964 NC |
8289 | bfd_vma offset, bfd_vma size) |
8290 | { | |
8291 | Elf_Internal_Sym sym; | |
8292 | ||
8293 | sym.st_value = (osi->sec->output_section->vma | |
8294 | + osi->sec->output_offset + offset); | |
8295 | sym.st_size = size; | |
8296 | sym.st_other = 0; | |
8297 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
8298 | sym.st_shndx = osi->sec_shndx; | |
8299 | return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1; | |
8300 | } | |
8301 | ||
8302 | static bfd_boolean | |
8303 | aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) | |
8304 | { | |
cec5225b | 8305 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
8306 | asection *stub_sec; |
8307 | bfd_vma addr; | |
8308 | char *stub_name; | |
8309 | output_arch_syminfo *osi; | |
8310 | ||
8311 | /* Massage our args to the form they really have. */ | |
cec5225b | 8312 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
8313 | osi = (output_arch_syminfo *) in_arg; |
8314 | ||
8315 | stub_sec = stub_entry->stub_sec; | |
8316 | ||
8317 | /* Ensure this stub is attached to the current section being | |
8318 | processed. */ | |
8319 | if (stub_sec != osi->sec) | |
8320 | return TRUE; | |
8321 | ||
8322 | addr = (bfd_vma) stub_entry->stub_offset; | |
8323 | ||
8324 | stub_name = stub_entry->output_name; | |
8325 | ||
8326 | switch (stub_entry->stub_type) | |
8327 | { | |
8328 | case aarch64_stub_adrp_branch: | |
cec5225b | 8329 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, |
a06ea964 NC |
8330 | sizeof (aarch64_adrp_branch_stub))) |
8331 | return FALSE; | |
cec5225b | 8332 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 NC |
8333 | return FALSE; |
8334 | break; | |
8335 | case aarch64_stub_long_branch: | |
cec5225b | 8336 | if (!elfNN_aarch64_output_stub_sym |
a06ea964 NC |
8337 | (osi, stub_name, addr, sizeof (aarch64_long_branch_stub))) |
8338 | return FALSE; | |
cec5225b | 8339 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 | 8340 | return FALSE; |
cec5225b | 8341 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16)) |
a06ea964 NC |
8342 | return FALSE; |
8343 | break; | |
68fcca92 JW |
8344 | case aarch64_stub_erratum_835769_veneer: |
8345 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
8346 | sizeof (aarch64_erratum_835769_stub))) | |
8347 | return FALSE; | |
8348 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
8349 | return FALSE; | |
8350 | break; | |
4106101c MS |
8351 | case aarch64_stub_erratum_843419_veneer: |
8352 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
8353 | sizeof (aarch64_erratum_843419_stub))) | |
8354 | return FALSE; | |
8355 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
8356 | return FALSE; | |
8357 | break; | |
9fca35fc TC |
8358 | case aarch64_stub_none: |
8359 | break; | |
4106101c | 8360 | |
a06ea964 | 8361 | default: |
8e2fe09f | 8362 | abort (); |
a06ea964 NC |
8363 | } |
8364 | ||
8365 | return TRUE; | |
8366 | } | |
8367 | ||
8368 | /* Output mapping symbols for linker generated sections. */ | |
8369 | ||
8370 | static bfd_boolean | |
cec5225b | 8371 | elfNN_aarch64_output_arch_local_syms (bfd *output_bfd, |
a06ea964 NC |
8372 | struct bfd_link_info *info, |
8373 | void *finfo, | |
8374 | int (*func) (void *, const char *, | |
8375 | Elf_Internal_Sym *, | |
8376 | asection *, | |
8377 | struct elf_link_hash_entry | |
8378 | *)) | |
8379 | { | |
8380 | output_arch_syminfo osi; | |
cec5225b | 8381 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 8382 | |
cec5225b | 8383 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
8384 | |
8385 | osi.finfo = finfo; | |
8386 | osi.info = info; | |
8387 | osi.func = func; | |
8388 | ||
8389 | /* Long calls stubs. */ | |
8390 | if (htab->stub_bfd && htab->stub_bfd->sections) | |
8391 | { | |
8392 | asection *stub_sec; | |
8393 | ||
8394 | for (stub_sec = htab->stub_bfd->sections; | |
8395 | stub_sec != NULL; stub_sec = stub_sec->next) | |
8396 | { | |
8397 | /* Ignore non-stub sections. */ | |
8398 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
8399 | continue; | |
8400 | ||
8401 | osi.sec = stub_sec; | |
8402 | ||
8403 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
8404 | (output_bfd, osi.sec->output_section); | |
8405 | ||
61865519 MS |
8406 | /* The first instruction in a stub is always a branch. */ |
8407 | if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0)) | |
8408 | return FALSE; | |
8409 | ||
a06ea964 NC |
8410 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub, |
8411 | &osi); | |
8412 | } | |
8413 | } | |
8414 | ||
8415 | /* Finally, output mapping symbols for the PLT. */ | |
8416 | if (!htab->root.splt || htab->root.splt->size == 0) | |
8417 | return TRUE; | |
8418 | ||
a06ea964 NC |
8419 | osi.sec_shndx = _bfd_elf_section_from_bfd_section |
8420 | (output_bfd, htab->root.splt->output_section); | |
8421 | osi.sec = htab->root.splt; | |
8422 | ||
73524045 | 8423 | elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0); |
a06ea964 NC |
8424 | |
8425 | return TRUE; | |
8426 | ||
8427 | } | |
8428 | ||
8429 | /* Allocate target specific section data. */ | |
8430 | ||
8431 | static bfd_boolean | |
cec5225b | 8432 | elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec) |
a06ea964 NC |
8433 | { |
8434 | if (!sec->used_by_bfd) | |
8435 | { | |
8436 | _aarch64_elf_section_data *sdata; | |
8437 | bfd_size_type amt = sizeof (*sdata); | |
8438 | ||
8439 | sdata = bfd_zalloc (abfd, amt); | |
8440 | if (sdata == NULL) | |
8441 | return FALSE; | |
8442 | sec->used_by_bfd = sdata; | |
8443 | } | |
8444 | ||
8445 | record_section_with_aarch64_elf_section_data (sec); | |
8446 | ||
8447 | return _bfd_elf_new_section_hook (abfd, sec); | |
8448 | } | |
8449 | ||
8450 | ||
8451 | static void | |
8452 | unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
8453 | asection *sec, | |
8454 | void *ignore ATTRIBUTE_UNUSED) | |
8455 | { | |
8456 | unrecord_section_with_aarch64_elf_section_data (sec); | |
8457 | } | |
8458 | ||
8459 | static bfd_boolean | |
cec5225b | 8460 | elfNN_aarch64_close_and_cleanup (bfd *abfd) |
a06ea964 NC |
8461 | { |
8462 | if (abfd->sections) | |
8463 | bfd_map_over_sections (abfd, | |
8464 | unrecord_section_via_map_over_sections, NULL); | |
8465 | ||
8466 | return _bfd_elf_close_and_cleanup (abfd); | |
8467 | } | |
8468 | ||
8469 | static bfd_boolean | |
cec5225b | 8470 | elfNN_aarch64_bfd_free_cached_info (bfd *abfd) |
a06ea964 NC |
8471 | { |
8472 | if (abfd->sections) | |
8473 | bfd_map_over_sections (abfd, | |
8474 | unrecord_section_via_map_over_sections, NULL); | |
8475 | ||
8476 | return _bfd_free_cached_info (abfd); | |
8477 | } | |
8478 | ||
a06ea964 NC |
8479 | /* Create dynamic sections. This is different from the ARM backend in that |
8480 | the got, plt, gotplt and their relocation sections are all created in the | |
8481 | standard part of the bfd elf backend. */ | |
8482 | ||
8483 | static bfd_boolean | |
cec5225b | 8484 | elfNN_aarch64_create_dynamic_sections (bfd *dynobj, |
a06ea964 NC |
8485 | struct bfd_link_info *info) |
8486 | { | |
cc0efaa8 MS |
8487 | /* We need to create .got section. */ |
8488 | if (!aarch64_elf_create_got_section (dynobj, info)) | |
8489 | return FALSE; | |
a06ea964 | 8490 | |
9d19e4fd | 8491 | return _bfd_elf_create_dynamic_sections (dynobj, info); |
a06ea964 NC |
8492 | } |
8493 | ||
8494 | ||
8495 | /* Allocate space in .plt, .got and associated reloc sections for | |
8496 | dynamic relocs. */ | |
8497 | ||
8498 | static bfd_boolean | |
cec5225b | 8499 | elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
a06ea964 NC |
8500 | { |
8501 | struct bfd_link_info *info; | |
cec5225b YZ |
8502 | struct elf_aarch64_link_hash_table *htab; |
8503 | struct elf_aarch64_link_hash_entry *eh; | |
a06ea964 NC |
8504 | struct elf_dyn_relocs *p; |
8505 | ||
8506 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
8507 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
8508 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
8509 | ||
8510 | There is no need to process bfd_link_hash_indirect symbols here | |
8511 | because we will also be presented with the concrete instance of | |
cec5225b | 8512 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been |
a06ea964 | 8513 | called to copy all relevant data from the generic to the concrete |
2d0ca824 | 8514 | symbol instance. */ |
a06ea964 NC |
8515 | if (h->root.type == bfd_link_hash_indirect) |
8516 | return TRUE; | |
8517 | ||
8518 | if (h->root.type == bfd_link_hash_warning) | |
8519 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8520 | ||
8521 | info = (struct bfd_link_info *) inf; | |
cec5225b | 8522 | htab = elf_aarch64_hash_table (info); |
a06ea964 | 8523 | |
1419bbe5 WN |
8524 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
8525 | here if it is defined and referenced in a non-shared object. */ | |
8526 | if (h->type == STT_GNU_IFUNC | |
8527 | && h->def_regular) | |
8528 | return TRUE; | |
8529 | else if (htab->root.dynamic_sections_created && h->plt.refcount > 0) | |
a06ea964 NC |
8530 | { |
8531 | /* Make sure this symbol is output as a dynamic symbol. | |
07d6d2b8 | 8532 | Undefined weak syms won't yet be marked as dynamic. */ |
ff07562f JW |
8533 | if (h->dynindx == -1 && !h->forced_local |
8534 | && h->root.type == bfd_link_hash_undefweak) | |
a06ea964 NC |
8535 | { |
8536 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
8537 | return FALSE; | |
8538 | } | |
8539 | ||
0e1862bb | 8540 | if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
a06ea964 NC |
8541 | { |
8542 | asection *s = htab->root.splt; | |
8543 | ||
8544 | /* If this is the first .plt entry, make room for the special | |
8545 | first entry. */ | |
8546 | if (s->size == 0) | |
8547 | s->size += htab->plt_header_size; | |
8548 | ||
8549 | h->plt.offset = s->size; | |
8550 | ||
8551 | /* If this symbol is not defined in a regular file, and we are | |
8552 | not generating a shared library, then set the symbol to this | |
8553 | location in the .plt. This is required to make function | |
8554 | pointers compare as equal between the normal executable and | |
8555 | the shared library. */ | |
0e1862bb | 8556 | if (!bfd_link_pic (info) && !h->def_regular) |
a06ea964 NC |
8557 | { |
8558 | h->root.u.def.section = s; | |
8559 | h->root.u.def.value = h->plt.offset; | |
8560 | } | |
8561 | ||
8562 | /* Make room for this entry. For now we only create the | |
8563 | small model PLT entries. We later need to find a way | |
8564 | of relaxing into these from the large model PLT entries. */ | |
37c18eed | 8565 | s->size += htab->plt_entry_size; |
a06ea964 NC |
8566 | |
8567 | /* We also need to make an entry in the .got.plt section, which | |
8568 | will be placed in the .got section by the linker script. */ | |
8569 | htab->root.sgotplt->size += GOT_ENTRY_SIZE; | |
8570 | ||
8571 | /* We also need to make an entry in the .rela.plt section. */ | |
8572 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8573 | ||
8574 | /* We need to ensure that all GOT entries that serve the PLT | |
8575 | are consecutive with the special GOT slots [0] [1] and | |
8576 | [2]. Any addtional relocations, such as | |
8577 | R_AARCH64_TLSDESC, must be placed after the PLT related | |
8578 | entries. We abuse the reloc_count such that during | |
8579 | sizing we adjust reloc_count to indicate the number of | |
8580 | PLT related reserved entries. In subsequent phases when | |
8581 | filling in the contents of the reloc entries, PLT related | |
8582 | entries are placed by computing their PLT index (0 | |
8583 | .. reloc_count). While other none PLT relocs are placed | |
8584 | at the slot indicated by reloc_count and reloc_count is | |
8585 | updated. */ | |
8586 | ||
8587 | htab->root.srelplt->reloc_count++; | |
8588 | } | |
8589 | else | |
8590 | { | |
8591 | h->plt.offset = (bfd_vma) - 1; | |
8592 | h->needs_plt = 0; | |
8593 | } | |
8594 | } | |
8595 | else | |
8596 | { | |
8597 | h->plt.offset = (bfd_vma) - 1; | |
8598 | h->needs_plt = 0; | |
8599 | } | |
8600 | ||
cec5225b | 8601 | eh = (struct elf_aarch64_link_hash_entry *) h; |
a06ea964 NC |
8602 | eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; |
8603 | ||
8604 | if (h->got.refcount > 0) | |
8605 | { | |
8606 | bfd_boolean dyn; | |
cec5225b | 8607 | unsigned got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
8608 | |
8609 | h->got.offset = (bfd_vma) - 1; | |
8610 | ||
8611 | dyn = htab->root.dynamic_sections_created; | |
8612 | ||
8613 | /* Make sure this symbol is output as a dynamic symbol. | |
07d6d2b8 | 8614 | Undefined weak syms won't yet be marked as dynamic. */ |
ff07562f JW |
8615 | if (dyn && h->dynindx == -1 && !h->forced_local |
8616 | && h->root.type == bfd_link_hash_undefweak) | |
a06ea964 NC |
8617 | { |
8618 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
8619 | return FALSE; | |
8620 | } | |
8621 | ||
8622 | if (got_type == GOT_UNKNOWN) | |
8623 | { | |
8624 | } | |
8625 | else if (got_type == GOT_NORMAL) | |
8626 | { | |
8627 | h->got.offset = htab->root.sgot->size; | |
8628 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8629 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8630 | || h->root.type != bfd_link_hash_undefweak) | |
0e1862bb | 8631 | && (bfd_link_pic (info) |
a377ae2a SN |
8632 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) |
8633 | /* Undefined weak symbol in static PIE resolves to 0 without | |
8634 | any dynamic relocations. */ | |
8635 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
a06ea964 NC |
8636 | { |
8637 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
8638 | } | |
8639 | } | |
8640 | else | |
8641 | { | |
8642 | int indx; | |
8643 | if (got_type & GOT_TLSDESC_GD) | |
8644 | { | |
8645 | eh->tlsdesc_got_jump_table_offset = | |
8646 | (htab->root.sgotplt->size | |
8647 | - aarch64_compute_jump_table_size (htab)); | |
8648 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
8649 | h->got.offset = (bfd_vma) - 2; | |
8650 | } | |
8651 | ||
8652 | if (got_type & GOT_TLS_GD) | |
8653 | { | |
8654 | h->got.offset = htab->root.sgot->size; | |
8655 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
8656 | } | |
8657 | ||
8658 | if (got_type & GOT_TLS_IE) | |
8659 | { | |
8660 | h->got.offset = htab->root.sgot->size; | |
8661 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8662 | } | |
8663 | ||
8664 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
8665 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8666 | || h->root.type != bfd_link_hash_undefweak) | |
6dda7875 | 8667 | && (!bfd_link_executable (info) |
a06ea964 NC |
8668 | || indx != 0 |
8669 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
8670 | { | |
8671 | if (got_type & GOT_TLSDESC_GD) | |
8672 | { | |
8673 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8674 | /* Note reloc_count not incremented here! We have | |
8675 | already adjusted reloc_count for this relocation | |
8676 | type. */ | |
8677 | ||
8678 | /* TLSDESC PLT is now needed, but not yet determined. */ | |
8679 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
8680 | } | |
8681 | ||
8682 | if (got_type & GOT_TLS_GD) | |
8683 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
8684 | ||
8685 | if (got_type & GOT_TLS_IE) | |
8686 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
8687 | } | |
8688 | } | |
8689 | } | |
8690 | else | |
8691 | { | |
8692 | h->got.offset = (bfd_vma) - 1; | |
8693 | } | |
8694 | ||
8695 | if (eh->dyn_relocs == NULL) | |
8696 | return TRUE; | |
8697 | ||
8698 | /* In the shared -Bsymbolic case, discard space allocated for | |
8699 | dynamic pc-relative relocs against symbols which turn out to be | |
8700 | defined in regular objects. For the normal shared case, discard | |
8701 | space for pc-relative relocs that have become local due to symbol | |
8702 | visibility changes. */ | |
8703 | ||
0e1862bb | 8704 | if (bfd_link_pic (info)) |
a06ea964 NC |
8705 | { |
8706 | /* Relocs that use pc_count are those that appear on a call | |
07d6d2b8 AM |
8707 | insn, or certain REL relocs that can generated via assembly. |
8708 | We want calls to protected symbols to resolve directly to the | |
8709 | function rather than going via the plt. If people want | |
8710 | function pointer comparisons to work as expected then they | |
8711 | should avoid writing weird assembly. */ | |
a06ea964 NC |
8712 | if (SYMBOL_CALLS_LOCAL (info, h)) |
8713 | { | |
8714 | struct elf_dyn_relocs **pp; | |
8715 | ||
8716 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) | |
8717 | { | |
8718 | p->count -= p->pc_count; | |
8719 | p->pc_count = 0; | |
8720 | if (p->count == 0) | |
8721 | *pp = p->next; | |
8722 | else | |
8723 | pp = &p->next; | |
8724 | } | |
8725 | } | |
8726 | ||
8727 | /* Also discard relocs on undefined weak syms with non-default | |
07d6d2b8 | 8728 | visibility. */ |
a06ea964 NC |
8729 | if (eh->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak) |
8730 | { | |
ddb7fd0f L |
8731 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
8732 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
a06ea964 NC |
8733 | eh->dyn_relocs = NULL; |
8734 | ||
8735 | /* Make sure undefined weak symbols are output as a dynamic | |
8736 | symbol in PIEs. */ | |
8737 | else if (h->dynindx == -1 | |
8738 | && !h->forced_local | |
ff07562f | 8739 | && h->root.type == bfd_link_hash_undefweak |
a06ea964 NC |
8740 | && !bfd_elf_link_record_dynamic_symbol (info, h)) |
8741 | return FALSE; | |
8742 | } | |
8743 | ||
8744 | } | |
8745 | else if (ELIMINATE_COPY_RELOCS) | |
8746 | { | |
8747 | /* For the non-shared case, discard space for relocs against | |
07d6d2b8 AM |
8748 | symbols which turn out to need copy relocs or are not |
8749 | dynamic. */ | |
a06ea964 NC |
8750 | |
8751 | if (!h->non_got_ref | |
8752 | && ((h->def_dynamic | |
8753 | && !h->def_regular) | |
8754 | || (htab->root.dynamic_sections_created | |
8755 | && (h->root.type == bfd_link_hash_undefweak | |
8756 | || h->root.type == bfd_link_hash_undefined)))) | |
8757 | { | |
8758 | /* Make sure this symbol is output as a dynamic symbol. | |
8759 | Undefined weak syms won't yet be marked as dynamic. */ | |
8760 | if (h->dynindx == -1 | |
8761 | && !h->forced_local | |
ff07562f | 8762 | && h->root.type == bfd_link_hash_undefweak |
a06ea964 NC |
8763 | && !bfd_elf_link_record_dynamic_symbol (info, h)) |
8764 | return FALSE; | |
8765 | ||
8766 | /* If that succeeded, we know we'll be keeping all the | |
8767 | relocs. */ | |
8768 | if (h->dynindx != -1) | |
8769 | goto keep; | |
8770 | } | |
8771 | ||
8772 | eh->dyn_relocs = NULL; | |
8773 | ||
8774 | keep:; | |
8775 | } | |
8776 | ||
8777 | /* Finally, allocate space. */ | |
8778 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
8779 | { | |
8780 | asection *sreloc; | |
8781 | ||
8782 | sreloc = elf_section_data (p->sec)->sreloc; | |
8783 | ||
8784 | BFD_ASSERT (sreloc != NULL); | |
8785 | ||
8786 | sreloc->size += p->count * RELOC_SIZE (htab); | |
8787 | } | |
8788 | ||
8789 | return TRUE; | |
8790 | } | |
8791 | ||
1419bbe5 WN |
8792 | /* Allocate space in .plt, .got and associated reloc sections for |
8793 | ifunc dynamic relocs. */ | |
8794 | ||
8795 | static bfd_boolean | |
8796 | elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h, | |
8797 | void *inf) | |
8798 | { | |
8799 | struct bfd_link_info *info; | |
8800 | struct elf_aarch64_link_hash_table *htab; | |
8801 | struct elf_aarch64_link_hash_entry *eh; | |
8802 | ||
8803 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
8804 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
8805 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
8806 | ||
8807 | There is no need to process bfd_link_hash_indirect symbols here | |
8808 | because we will also be presented with the concrete instance of | |
8809 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been | |
8810 | called to copy all relevant data from the generic to the concrete | |
2d0ca824 | 8811 | symbol instance. */ |
1419bbe5 WN |
8812 | if (h->root.type == bfd_link_hash_indirect) |
8813 | return TRUE; | |
8814 | ||
8815 | if (h->root.type == bfd_link_hash_warning) | |
8816 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8817 | ||
8818 | info = (struct bfd_link_info *) inf; | |
8819 | htab = elf_aarch64_hash_table (info); | |
8820 | ||
8821 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
8822 | ||
8823 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it | |
8824 | here if it is defined and referenced in a non-shared object. */ | |
8825 | if (h->type == STT_GNU_IFUNC | |
8826 | && h->def_regular) | |
8827 | return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, | |
8828 | &eh->dyn_relocs, | |
2df3368d | 8829 | NULL, |
1419bbe5 WN |
8830 | htab->plt_entry_size, |
8831 | htab->plt_header_size, | |
233cc9c1 L |
8832 | GOT_ENTRY_SIZE, |
8833 | FALSE); | |
1419bbe5 WN |
8834 | return TRUE; |
8835 | } | |
8836 | ||
8837 | /* Allocate space in .plt, .got and associated reloc sections for | |
8838 | local dynamic relocs. */ | |
8839 | ||
8840 | static bfd_boolean | |
8841 | elfNN_aarch64_allocate_local_dynrelocs (void **slot, void *inf) | |
8842 | { | |
8843 | struct elf_link_hash_entry *h | |
8844 | = (struct elf_link_hash_entry *) *slot; | |
8845 | ||
8846 | if (h->type != STT_GNU_IFUNC | |
8847 | || !h->def_regular | |
8848 | || !h->ref_regular | |
8849 | || !h->forced_local | |
8850 | || h->root.type != bfd_link_hash_defined) | |
8851 | abort (); | |
8852 | ||
8853 | return elfNN_aarch64_allocate_dynrelocs (h, inf); | |
8854 | } | |
8855 | ||
8856 | /* Allocate space in .plt, .got and associated reloc sections for | |
8857 | local ifunc dynamic relocs. */ | |
8858 | ||
8859 | static bfd_boolean | |
8860 | elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf) | |
8861 | { | |
8862 | struct elf_link_hash_entry *h | |
8863 | = (struct elf_link_hash_entry *) *slot; | |
8864 | ||
8865 | if (h->type != STT_GNU_IFUNC | |
8866 | || !h->def_regular | |
8867 | || !h->ref_regular | |
8868 | || !h->forced_local | |
8869 | || h->root.type != bfd_link_hash_defined) | |
8870 | abort (); | |
8871 | ||
8872 | return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf); | |
8873 | } | |
a06ea964 | 8874 | |
63c1f59d AM |
8875 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to |
8876 | read-only sections. */ | |
c2170589 JW |
8877 | |
8878 | static bfd_boolean | |
63c1f59d | 8879 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) |
c2170589 | 8880 | { |
63c1f59d | 8881 | asection *sec; |
c2170589 | 8882 | |
63c1f59d AM |
8883 | if (h->root.type == bfd_link_hash_indirect) |
8884 | return TRUE; | |
c2170589 | 8885 | |
63c1f59d AM |
8886 | sec = readonly_dynrelocs (h); |
8887 | if (sec != NULL) | |
8888 | { | |
8889 | struct bfd_link_info *info = (struct bfd_link_info *) info_p; | |
c2170589 | 8890 | |
63c1f59d AM |
8891 | info->flags |= DF_TEXTREL; |
8892 | info->callbacks->minfo | |
c1c8c1ef | 8893 | (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), |
63c1f59d | 8894 | sec->owner, h->root.root.string, sec); |
c2170589 | 8895 | |
63c1f59d AM |
8896 | /* Not an error, just cut short the traversal. */ |
8897 | return FALSE; | |
c2170589 JW |
8898 | } |
8899 | return TRUE; | |
8900 | } | |
8901 | ||
a06ea964 NC |
8902 | /* This is the most important function of all . Innocuosly named |
8903 | though ! */ | |
2d0ca824 | 8904 | |
a06ea964 | 8905 | static bfd_boolean |
cec5225b | 8906 | elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
8907 | struct bfd_link_info *info) |
8908 | { | |
cec5225b | 8909 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
8910 | bfd *dynobj; |
8911 | asection *s; | |
8912 | bfd_boolean relocs; | |
8913 | bfd *ibfd; | |
8914 | ||
cec5225b | 8915 | htab = elf_aarch64_hash_table ((info)); |
a06ea964 NC |
8916 | dynobj = htab->root.dynobj; |
8917 | ||
8918 | BFD_ASSERT (dynobj != NULL); | |
8919 | ||
8920 | if (htab->root.dynamic_sections_created) | |
8921 | { | |
9b8b325a | 8922 | if (bfd_link_executable (info) && !info->nointerp) |
a06ea964 NC |
8923 | { |
8924 | s = bfd_get_linker_section (dynobj, ".interp"); | |
8925 | if (s == NULL) | |
8926 | abort (); | |
8927 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
8928 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
8929 | } | |
8930 | } | |
8931 | ||
8932 | /* Set up .got offsets for local syms, and space for local dynamic | |
8933 | relocs. */ | |
c72f2fb2 | 8934 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
a06ea964 NC |
8935 | { |
8936 | struct elf_aarch64_local_symbol *locals = NULL; | |
8937 | Elf_Internal_Shdr *symtab_hdr; | |
8938 | asection *srel; | |
8939 | unsigned int i; | |
8940 | ||
8941 | if (!is_aarch64_elf (ibfd)) | |
8942 | continue; | |
8943 | ||
8944 | for (s = ibfd->sections; s != NULL; s = s->next) | |
8945 | { | |
8946 | struct elf_dyn_relocs *p; | |
8947 | ||
8948 | for (p = (struct elf_dyn_relocs *) | |
8949 | (elf_section_data (s)->local_dynrel); p != NULL; p = p->next) | |
8950 | { | |
8951 | if (!bfd_is_abs_section (p->sec) | |
8952 | && bfd_is_abs_section (p->sec->output_section)) | |
8953 | { | |
8954 | /* Input section has been discarded, either because | |
8955 | it is a copy of a linkonce section or due to | |
8956 | linker script /DISCARD/, so we'll be discarding | |
8957 | the relocs too. */ | |
8958 | } | |
8959 | else if (p->count != 0) | |
8960 | { | |
8961 | srel = elf_section_data (p->sec)->sreloc; | |
8962 | srel->size += p->count * RELOC_SIZE (htab); | |
8963 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
8964 | info->flags |= DF_TEXTREL; | |
8965 | } | |
8966 | } | |
8967 | } | |
8968 | ||
cec5225b | 8969 | locals = elf_aarch64_locals (ibfd); |
a06ea964 NC |
8970 | if (!locals) |
8971 | continue; | |
8972 | ||
8973 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
8974 | srel = htab->root.srelgot; | |
8975 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
8976 | { | |
8977 | locals[i].got_offset = (bfd_vma) - 1; | |
8978 | locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
8979 | if (locals[i].got_refcount > 0) | |
8980 | { | |
8981 | unsigned got_type = locals[i].got_type; | |
8982 | if (got_type & GOT_TLSDESC_GD) | |
8983 | { | |
8984 | locals[i].tlsdesc_got_jump_table_offset = | |
8985 | (htab->root.sgotplt->size | |
8986 | - aarch64_compute_jump_table_size (htab)); | |
8987 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
8988 | locals[i].got_offset = (bfd_vma) - 2; | |
8989 | } | |
8990 | ||
8991 | if (got_type & GOT_TLS_GD) | |
8992 | { | |
8993 | locals[i].got_offset = htab->root.sgot->size; | |
8994 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
8995 | } | |
8996 | ||
b53b1bed JW |
8997 | if (got_type & GOT_TLS_IE |
8998 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
8999 | { |
9000 | locals[i].got_offset = htab->root.sgot->size; | |
9001 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
9002 | } | |
9003 | ||
9004 | if (got_type == GOT_UNKNOWN) | |
9005 | { | |
9006 | } | |
9007 | ||
0e1862bb | 9008 | if (bfd_link_pic (info)) |
a06ea964 NC |
9009 | { |
9010 | if (got_type & GOT_TLSDESC_GD) | |
9011 | { | |
9012 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
9013 | /* Note RELOC_COUNT not incremented here! */ | |
9014 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
9015 | } | |
9016 | ||
9017 | if (got_type & GOT_TLS_GD) | |
9018 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
9019 | ||
b53b1bed JW |
9020 | if (got_type & GOT_TLS_IE |
9021 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
9022 | htab->root.srelgot->size += RELOC_SIZE (htab); |
9023 | } | |
9024 | } | |
9025 | else | |
9026 | { | |
9027 | locals[i].got_refcount = (bfd_vma) - 1; | |
9028 | } | |
9029 | } | |
9030 | } | |
9031 | ||
9032 | ||
9033 | /* Allocate global sym .plt and .got entries, and space for global | |
9034 | sym dynamic relocs. */ | |
cec5225b | 9035 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs, |
a06ea964 NC |
9036 | info); |
9037 | ||
1419bbe5 WN |
9038 | /* Allocate global ifunc sym .plt and .got entries, and space for global |
9039 | ifunc sym dynamic relocs. */ | |
9040 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs, | |
9041 | info); | |
9042 | ||
9043 | /* Allocate .plt and .got entries, and space for local symbols. */ | |
9044 | htab_traverse (htab->loc_hash_table, | |
9045 | elfNN_aarch64_allocate_local_dynrelocs, | |
9046 | info); | |
9047 | ||
9048 | /* Allocate .plt and .got entries, and space for local ifunc symbols. */ | |
9049 | htab_traverse (htab->loc_hash_table, | |
9050 | elfNN_aarch64_allocate_local_ifunc_dynrelocs, | |
9051 | info); | |
a06ea964 NC |
9052 | |
9053 | /* For every jump slot reserved in the sgotplt, reloc_count is | |
9054 | incremented. However, when we reserve space for TLS descriptors, | |
9055 | it's not incremented, so in order to compute the space reserved | |
9056 | for them, it suffices to multiply the reloc count by the jump | |
9057 | slot size. */ | |
9058 | ||
9059 | if (htab->root.srelplt) | |
8847944f | 9060 | htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab); |
a06ea964 NC |
9061 | |
9062 | if (htab->tlsdesc_plt) | |
9063 | { | |
9064 | if (htab->root.splt->size == 0) | |
37c18eed | 9065 | htab->root.splt->size += htab->plt_header_size; |
a06ea964 NC |
9066 | |
9067 | htab->tlsdesc_plt = htab->root.splt->size; | |
37c18eed | 9068 | htab->root.splt->size += htab->tlsdesc_plt_entry_size; |
a06ea964 NC |
9069 | |
9070 | /* If we're not using lazy TLS relocations, don't generate the | |
07d6d2b8 | 9071 | GOT entry required. */ |
a06ea964 NC |
9072 | if (!(info->flags & DF_BIND_NOW)) |
9073 | { | |
9074 | htab->dt_tlsdesc_got = htab->root.sgot->size; | |
9075 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
9076 | } | |
9077 | } | |
9078 | ||
68fcca92 | 9079 | /* Init mapping symbols information to use later to distingush between |
4106101c MS |
9080 | code and data while scanning for errata. */ |
9081 | if (htab->fix_erratum_835769 || htab->fix_erratum_843419) | |
68fcca92 JW |
9082 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
9083 | { | |
9084 | if (!is_aarch64_elf (ibfd)) | |
9085 | continue; | |
9086 | bfd_elfNN_aarch64_init_maps (ibfd); | |
9087 | } | |
9088 | ||
a06ea964 NC |
9089 | /* We now have determined the sizes of the various dynamic sections. |
9090 | Allocate memory for them. */ | |
9091 | relocs = FALSE; | |
9092 | for (s = dynobj->sections; s != NULL; s = s->next) | |
9093 | { | |
9094 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9095 | continue; | |
9096 | ||
9097 | if (s == htab->root.splt | |
9098 | || s == htab->root.sgot | |
9099 | || s == htab->root.sgotplt | |
9100 | || s == htab->root.iplt | |
9d19e4fd | 9101 | || s == htab->root.igotplt |
5474d94f AM |
9102 | || s == htab->root.sdynbss |
9103 | || s == htab->root.sdynrelro) | |
a06ea964 NC |
9104 | { |
9105 | /* Strip this section if we don't need it; see the | |
9106 | comment below. */ | |
9107 | } | |
9108 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) | |
9109 | { | |
9110 | if (s->size != 0 && s != htab->root.srelplt) | |
9111 | relocs = TRUE; | |
9112 | ||
9113 | /* We use the reloc_count field as a counter if we need | |
9114 | to copy relocs into the output file. */ | |
9115 | if (s != htab->root.srelplt) | |
9116 | s->reloc_count = 0; | |
9117 | } | |
9118 | else | |
9119 | { | |
9120 | /* It's not one of our sections, so don't allocate space. */ | |
9121 | continue; | |
9122 | } | |
9123 | ||
9124 | if (s->size == 0) | |
9125 | { | |
9126 | /* If we don't need this section, strip it from the | |
9127 | output file. This is mostly to handle .rela.bss and | |
9128 | .rela.plt. We must create both sections in | |
9129 | create_dynamic_sections, because they must be created | |
9130 | before the linker maps input sections to output | |
9131 | sections. The linker does that before | |
9132 | adjust_dynamic_symbol is called, and it is that | |
9133 | function which decides whether anything needs to go | |
9134 | into these sections. */ | |
a06ea964 NC |
9135 | s->flags |= SEC_EXCLUDE; |
9136 | continue; | |
9137 | } | |
9138 | ||
9139 | if ((s->flags & SEC_HAS_CONTENTS) == 0) | |
9140 | continue; | |
9141 | ||
9142 | /* Allocate memory for the section contents. We use bfd_zalloc | |
07d6d2b8 AM |
9143 | here in case unused entries are not reclaimed before the |
9144 | section's contents are written out. This should not happen, | |
9145 | but this way if it does, we get a R_AARCH64_NONE reloc instead | |
9146 | of garbage. */ | |
a06ea964 NC |
9147 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
9148 | if (s->contents == NULL) | |
9149 | return FALSE; | |
9150 | } | |
9151 | ||
9152 | if (htab->root.dynamic_sections_created) | |
9153 | { | |
9154 | /* Add some entries to the .dynamic section. We fill in the | |
07d6d2b8 AM |
9155 | values later, in elfNN_aarch64_finish_dynamic_sections, but we |
9156 | must add the entries now so that we get the correct size for | |
9157 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
9158 | dynamic linker and used by the debugger. */ | |
a06ea964 NC |
9159 | #define add_dynamic_entry(TAG, VAL) \ |
9160 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
9161 | ||
0e1862bb | 9162 | if (bfd_link_executable (info)) |
a06ea964 NC |
9163 | { |
9164 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
9165 | return FALSE; | |
9166 | } | |
9167 | ||
9168 | if (htab->root.splt->size != 0) | |
9169 | { | |
9170 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
9171 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
9172 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
9173 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
9174 | return FALSE; | |
9175 | ||
9176 | if (htab->tlsdesc_plt | |
9177 | && (!add_dynamic_entry (DT_TLSDESC_PLT, 0) | |
9178 | || !add_dynamic_entry (DT_TLSDESC_GOT, 0))) | |
9179 | return FALSE; | |
37c18eed | 9180 | |
1dbade74 SD |
9181 | if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_BTI_PAC) |
9182 | && (!add_dynamic_entry (DT_AARCH64_BTI_PLT, 0) | |
9183 | || !add_dynamic_entry (DT_AARCH64_PAC_PLT, 0))) | |
9184 | return FALSE; | |
9185 | ||
9186 | else if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_BTI) | |
9187 | && !add_dynamic_entry (DT_AARCH64_BTI_PLT, 0)) | |
9188 | return FALSE; | |
9189 | ||
9190 | else if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_PAC) | |
9191 | && !add_dynamic_entry (DT_AARCH64_PAC_PLT, 0)) | |
37c18eed | 9192 | return FALSE; |
a06ea964 NC |
9193 | } |
9194 | ||
9195 | if (relocs) | |
9196 | { | |
9197 | if (!add_dynamic_entry (DT_RELA, 0) | |
9198 | || !add_dynamic_entry (DT_RELASZ, 0) | |
9199 | || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) | |
9200 | return FALSE; | |
9201 | ||
9202 | /* If any dynamic relocs apply to a read-only section, | |
9203 | then we need a DT_TEXTREL entry. */ | |
c2170589 | 9204 | if ((info->flags & DF_TEXTREL) == 0) |
63c1f59d | 9205 | elf_link_hash_traverse (&htab->root, maybe_set_textrel, info); |
c2170589 | 9206 | |
a06ea964 NC |
9207 | if ((info->flags & DF_TEXTREL) != 0) |
9208 | { | |
9209 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
9210 | return FALSE; | |
9211 | } | |
9212 | } | |
9213 | } | |
9214 | #undef add_dynamic_entry | |
9215 | ||
9216 | return TRUE; | |
a06ea964 NC |
9217 | } |
9218 | ||
9219 | static inline void | |
caed7120 YZ |
9220 | elf_aarch64_update_plt_entry (bfd *output_bfd, |
9221 | bfd_reloc_code_real_type r_type, | |
9222 | bfd_byte *plt_entry, bfd_vma value) | |
a06ea964 | 9223 | { |
caed7120 YZ |
9224 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type); |
9225 | ||
1d75a8e2 NC |
9226 | /* FIXME: We should check the return value from this function call. */ |
9227 | (void) _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value); | |
a06ea964 NC |
9228 | } |
9229 | ||
9230 | static void | |
cec5225b YZ |
9231 | elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h, |
9232 | struct elf_aarch64_link_hash_table | |
1419bbe5 WN |
9233 | *htab, bfd *output_bfd, |
9234 | struct bfd_link_info *info) | |
a06ea964 NC |
9235 | { |
9236 | bfd_byte *plt_entry; | |
9237 | bfd_vma plt_index; | |
9238 | bfd_vma got_offset; | |
9239 | bfd_vma gotplt_entry_address; | |
9240 | bfd_vma plt_entry_address; | |
9241 | Elf_Internal_Rela rela; | |
9242 | bfd_byte *loc; | |
1419bbe5 WN |
9243 | asection *plt, *gotplt, *relplt; |
9244 | ||
9245 | /* When building a static executable, use .iplt, .igot.plt and | |
9246 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
9247 | if (htab->root.splt != NULL) | |
9248 | { | |
9249 | plt = htab->root.splt; | |
9250 | gotplt = htab->root.sgotplt; | |
9251 | relplt = htab->root.srelplt; | |
9252 | } | |
9253 | else | |
9254 | { | |
9255 | plt = htab->root.iplt; | |
9256 | gotplt = htab->root.igotplt; | |
9257 | relplt = htab->root.irelplt; | |
9258 | } | |
9259 | ||
9260 | /* Get the index in the procedure linkage table which | |
9261 | corresponds to this symbol. This is the index of this symbol | |
9262 | in all the symbols for which we are making plt entries. The | |
9263 | first entry in the procedure linkage table is reserved. | |
a06ea964 | 9264 | |
1419bbe5 WN |
9265 | Get the offset into the .got table of the entry that |
9266 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE | |
9267 | bytes. The first three are reserved for the dynamic linker. | |
692e2b8b | 9268 | |
1419bbe5 WN |
9269 | For static executables, we don't reserve anything. */ |
9270 | ||
9271 | if (plt == htab->root.splt) | |
9272 | { | |
9273 | plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size; | |
9274 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
9275 | } | |
9276 | else | |
9277 | { | |
9278 | plt_index = h->plt.offset / htab->plt_entry_size; | |
9279 | got_offset = plt_index * GOT_ENTRY_SIZE; | |
9280 | } | |
9281 | ||
9282 | plt_entry = plt->contents + h->plt.offset; | |
9283 | plt_entry_address = plt->output_section->vma | |
f44a1f8e | 9284 | + plt->output_offset + h->plt.offset; |
1419bbe5 WN |
9285 | gotplt_entry_address = gotplt->output_section->vma + |
9286 | gotplt->output_offset + got_offset; | |
a06ea964 NC |
9287 | |
9288 | /* Copy in the boiler-plate for the PLTn entry. */ | |
37c18eed SD |
9289 | memcpy (plt_entry, htab->plt_entry, htab->plt_entry_size); |
9290 | ||
9291 | /* First instruction in BTI enabled PLT stub is a BTI | |
9292 | instruction so skip it. */ | |
9293 | if (elf_aarch64_tdata (output_bfd)->plt_type & PLT_BTI | |
9294 | && elf_elfheader (output_bfd)->e_type == ET_EXEC) | |
9295 | plt_entry = plt_entry + 4; | |
a06ea964 NC |
9296 | |
9297 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
9298 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 YZ |
9299 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
9300 | plt_entry, | |
9301 | PG (gotplt_entry_address) - | |
9302 | PG (plt_entry_address)); | |
a06ea964 NC |
9303 | |
9304 | /* Fill in the lo12 bits for the load from the pltgot. */ | |
caed7120 YZ |
9305 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
9306 | plt_entry + 4, | |
9307 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 | 9308 | |
9aff4b7a | 9309 | /* Fill in the lo12 bits for the add from the pltgot entry. */ |
caed7120 YZ |
9310 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
9311 | plt_entry + 8, | |
9312 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 NC |
9313 | |
9314 | /* All the GOTPLT Entries are essentially initialized to PLT0. */ | |
cec5225b | 9315 | bfd_put_NN (output_bfd, |
1419bbe5 WN |
9316 | plt->output_section->vma + plt->output_offset, |
9317 | gotplt->contents + got_offset); | |
a06ea964 | 9318 | |
a06ea964 | 9319 | rela.r_offset = gotplt_entry_address; |
1419bbe5 WN |
9320 | |
9321 | if (h->dynindx == -1 | |
0e1862bb | 9322 | || ((bfd_link_executable (info) |
1419bbe5 WN |
9323 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
9324 | && h->def_regular | |
9325 | && h->type == STT_GNU_IFUNC)) | |
9326 | { | |
9327 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
9328 | R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */ | |
9329 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
9330 | rela.r_addend = (h->root.u.def.value | |
9331 | + h->root.u.def.section->output_section->vma | |
9332 | + h->root.u.def.section->output_offset); | |
9333 | } | |
9334 | else | |
9335 | { | |
9336 | /* Fill in the entry in the .rela.plt section. */ | |
9337 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT)); | |
9338 | rela.r_addend = 0; | |
9339 | } | |
a06ea964 NC |
9340 | |
9341 | /* Compute the relocation entry to used based on PLT index and do | |
9342 | not adjust reloc_count. The reloc_count has already been adjusted | |
9343 | to account for this entry. */ | |
1419bbe5 | 9344 | loc = relplt->contents + plt_index * RELOC_SIZE (htab); |
cec5225b | 9345 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
9346 | } |
9347 | ||
9348 | /* Size sections even though they're not dynamic. We use it to setup | |
9349 | _TLS_MODULE_BASE_, if needed. */ | |
9350 | ||
9351 | static bfd_boolean | |
cec5225b | 9352 | elfNN_aarch64_always_size_sections (bfd *output_bfd, |
a06ea964 NC |
9353 | struct bfd_link_info *info) |
9354 | { | |
9355 | asection *tls_sec; | |
9356 | ||
0e1862bb | 9357 | if (bfd_link_relocatable (info)) |
a06ea964 NC |
9358 | return TRUE; |
9359 | ||
9360 | tls_sec = elf_hash_table (info)->tls_sec; | |
9361 | ||
9362 | if (tls_sec) | |
9363 | { | |
9364 | struct elf_link_hash_entry *tlsbase; | |
9365 | ||
9366 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
9367 | "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE); | |
9368 | ||
9369 | if (tlsbase) | |
9370 | { | |
9371 | struct bfd_link_hash_entry *h = NULL; | |
9372 | const struct elf_backend_data *bed = | |
9373 | get_elf_backend_data (output_bfd); | |
9374 | ||
9375 | if (!(_bfd_generic_link_add_one_symbol | |
9376 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
9377 | tls_sec, 0, NULL, FALSE, bed->collect, &h))) | |
9378 | return FALSE; | |
9379 | ||
9380 | tlsbase->type = STT_TLS; | |
9381 | tlsbase = (struct elf_link_hash_entry *) h; | |
9382 | tlsbase->def_regular = 1; | |
9383 | tlsbase->other = STV_HIDDEN; | |
9384 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
9385 | } | |
9386 | } | |
9387 | ||
9388 | return TRUE; | |
9389 | } | |
9390 | ||
9391 | /* Finish up dynamic symbol handling. We set the contents of various | |
9392 | dynamic sections here. */ | |
2d0ca824 | 9393 | |
a06ea964 | 9394 | static bfd_boolean |
cec5225b | 9395 | elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd, |
a06ea964 NC |
9396 | struct bfd_link_info *info, |
9397 | struct elf_link_hash_entry *h, | |
9398 | Elf_Internal_Sym *sym) | |
9399 | { | |
cec5225b YZ |
9400 | struct elf_aarch64_link_hash_table *htab; |
9401 | htab = elf_aarch64_hash_table (info); | |
a06ea964 NC |
9402 | |
9403 | if (h->plt.offset != (bfd_vma) - 1) | |
9404 | { | |
1419bbe5 WN |
9405 | asection *plt, *gotplt, *relplt; |
9406 | ||
a06ea964 | 9407 | /* This symbol has an entry in the procedure linkage table. Set |
07d6d2b8 | 9408 | it up. */ |
a06ea964 | 9409 | |
1419bbe5 WN |
9410 | /* When building a static executable, use .iplt, .igot.plt and |
9411 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
9412 | if (htab->root.splt != NULL) | |
9413 | { | |
9414 | plt = htab->root.splt; | |
9415 | gotplt = htab->root.sgotplt; | |
9416 | relplt = htab->root.srelplt; | |
9417 | } | |
9418 | else | |
9419 | { | |
9420 | plt = htab->root.iplt; | |
9421 | gotplt = htab->root.igotplt; | |
9422 | relplt = htab->root.irelplt; | |
9423 | } | |
9424 | ||
9425 | /* This symbol has an entry in the procedure linkage table. Set | |
9426 | it up. */ | |
9427 | if ((h->dynindx == -1 | |
0e1862bb | 9428 | && !((h->forced_local || bfd_link_executable (info)) |
1419bbe5 WN |
9429 | && h->def_regular |
9430 | && h->type == STT_GNU_IFUNC)) | |
9431 | || plt == NULL | |
9432 | || gotplt == NULL | |
9433 | || relplt == NULL) | |
f955cccf | 9434 | return FALSE; |
a06ea964 | 9435 | |
1419bbe5 | 9436 | elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info); |
a06ea964 NC |
9437 | if (!h->def_regular) |
9438 | { | |
9439 | /* Mark the symbol as undefined, rather than as defined in | |
46b87d49 | 9440 | the .plt section. */ |
a06ea964 | 9441 | sym->st_shndx = SHN_UNDEF; |
46b87d49 WN |
9442 | /* If the symbol is weak we need to clear the value. |
9443 | Otherwise, the PLT entry would provide a definition for | |
9444 | the symbol even if the symbol wasn't defined anywhere, | |
9445 | and so the symbol would never be NULL. Leave the value if | |
9446 | there were any relocations where pointer equality matters | |
9447 | (this is a clue for the dynamic linker, to make function | |
9448 | pointer comparisons work between an application and shared | |
9449 | library). */ | |
9450 | if (!h->ref_regular_nonweak || !h->pointer_equality_needed) | |
9451 | sym->st_value = 0; | |
a06ea964 NC |
9452 | } |
9453 | } | |
9454 | ||
9455 | if (h->got.offset != (bfd_vma) - 1 | |
a377ae2a SN |
9456 | && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL |
9457 | /* Undefined weak symbol in static PIE resolves to 0 without | |
9458 | any dynamic relocations. */ | |
9459 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
a06ea964 NC |
9460 | { |
9461 | Elf_Internal_Rela rela; | |
9462 | bfd_byte *loc; | |
9463 | ||
9464 | /* This symbol has an entry in the global offset table. Set it | |
07d6d2b8 | 9465 | up. */ |
a06ea964 NC |
9466 | if (htab->root.sgot == NULL || htab->root.srelgot == NULL) |
9467 | abort (); | |
9468 | ||
9469 | rela.r_offset = (htab->root.sgot->output_section->vma | |
9470 | + htab->root.sgot->output_offset | |
9471 | + (h->got.offset & ~(bfd_vma) 1)); | |
9472 | ||
49206388 WN |
9473 | if (h->def_regular |
9474 | && h->type == STT_GNU_IFUNC) | |
9475 | { | |
0e1862bb | 9476 | if (bfd_link_pic (info)) |
49206388 WN |
9477 | { |
9478 | /* Generate R_AARCH64_GLOB_DAT. */ | |
9479 | goto do_glob_dat; | |
9480 | } | |
9481 | else | |
9482 | { | |
9483 | asection *plt; | |
9484 | ||
9485 | if (!h->pointer_equality_needed) | |
9486 | abort (); | |
9487 | ||
9488 | /* For non-shared object, we can't use .got.plt, which | |
9489 | contains the real function address if we need pointer | |
9490 | equality. We load the GOT entry with the PLT entry. */ | |
9491 | plt = htab->root.splt ? htab->root.splt : htab->root.iplt; | |
9492 | bfd_put_NN (output_bfd, (plt->output_section->vma | |
9493 | + plt->output_offset | |
9494 | + h->plt.offset), | |
9495 | htab->root.sgot->contents | |
9496 | + (h->got.offset & ~(bfd_vma) 1)); | |
9497 | return TRUE; | |
9498 | } | |
9499 | } | |
0e1862bb | 9500 | else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h)) |
a06ea964 | 9501 | { |
0ee3a6db | 9502 | if (!(h->def_regular || ELF_COMMON_DEF_P (h))) |
a06ea964 NC |
9503 | return FALSE; |
9504 | ||
9505 | BFD_ASSERT ((h->got.offset & 1) != 0); | |
a6bb11b2 | 9506 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); |
a06ea964 NC |
9507 | rela.r_addend = (h->root.u.def.value |
9508 | + h->root.u.def.section->output_section->vma | |
9509 | + h->root.u.def.section->output_offset); | |
9510 | } | |
9511 | else | |
9512 | { | |
49206388 | 9513 | do_glob_dat: |
a06ea964 | 9514 | BFD_ASSERT ((h->got.offset & 1) == 0); |
cec5225b | 9515 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 | 9516 | htab->root.sgot->contents + h->got.offset); |
a6bb11b2 | 9517 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT)); |
a06ea964 NC |
9518 | rela.r_addend = 0; |
9519 | } | |
9520 | ||
9521 | loc = htab->root.srelgot->contents; | |
9522 | loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 9523 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
9524 | } |
9525 | ||
9526 | if (h->needs_copy) | |
9527 | { | |
9528 | Elf_Internal_Rela rela; | |
5474d94f | 9529 | asection *s; |
a06ea964 NC |
9530 | bfd_byte *loc; |
9531 | ||
9532 | /* This symbol needs a copy reloc. Set it up. */ | |
a06ea964 NC |
9533 | if (h->dynindx == -1 |
9534 | || (h->root.type != bfd_link_hash_defined | |
9535 | && h->root.type != bfd_link_hash_defweak) | |
9d19e4fd | 9536 | || htab->root.srelbss == NULL) |
a06ea964 NC |
9537 | abort (); |
9538 | ||
9539 | rela.r_offset = (h->root.u.def.value | |
9540 | + h->root.u.def.section->output_section->vma | |
9541 | + h->root.u.def.section->output_offset); | |
a6bb11b2 | 9542 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY)); |
a06ea964 | 9543 | rela.r_addend = 0; |
afbf7e8e | 9544 | if (h->root.u.def.section == htab->root.sdynrelro) |
5474d94f AM |
9545 | s = htab->root.sreldynrelro; |
9546 | else | |
9547 | s = htab->root.srelbss; | |
9548 | loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 9549 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
9550 | } |
9551 | ||
9552 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may | |
9553 | be NULL for local symbols. */ | |
9554 | if (sym != NULL | |
9637f6ef | 9555 | && (h == elf_hash_table (info)->hdynamic |
a06ea964 NC |
9556 | || h == elf_hash_table (info)->hgot)) |
9557 | sym->st_shndx = SHN_ABS; | |
9558 | ||
9559 | return TRUE; | |
9560 | } | |
9561 | ||
1419bbe5 WN |
9562 | /* Finish up local dynamic symbol handling. We set the contents of |
9563 | various dynamic sections here. */ | |
9564 | ||
9565 | static bfd_boolean | |
9566 | elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf) | |
9567 | { | |
9568 | struct elf_link_hash_entry *h | |
9569 | = (struct elf_link_hash_entry *) *slot; | |
9570 | struct bfd_link_info *info | |
9571 | = (struct bfd_link_info *) inf; | |
9572 | ||
9573 | return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd, | |
9574 | info, h, NULL); | |
9575 | } | |
9576 | ||
a06ea964 | 9577 | static void |
cec5225b YZ |
9578 | elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED, |
9579 | struct elf_aarch64_link_hash_table | |
a06ea964 NC |
9580 | *htab) |
9581 | { | |
9582 | /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between | |
9583 | small and large plts and at the minute just generates | |
9584 | the small PLT. */ | |
9585 | ||
cec5225b | 9586 | /* PLT0 of the small PLT looks like this in ELF64 - |
a06ea964 NC |
9587 | stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack. |
9588 | adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT | |
9589 | ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the | |
9590 | // symbol resolver | |
9591 | add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the | |
9592 | // GOTPLT entry for this. | |
9593 | br x17 | |
cec5225b | 9594 | PLT0 will be slightly different in ELF32 due to different got entry |
2d0ca824 | 9595 | size. */ |
caed7120 | 9596 | bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */ |
a06ea964 NC |
9597 | bfd_vma plt_base; |
9598 | ||
9599 | ||
37c18eed SD |
9600 | memcpy (htab->root.splt->contents, htab->plt0_entry, |
9601 | htab->plt_header_size); | |
a06ea964 | 9602 | elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize = |
37c18eed | 9603 | htab->plt_header_size; |
a06ea964 | 9604 | |
caed7120 YZ |
9605 | plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma |
9606 | + htab->root.sgotplt->output_offset | |
9607 | + GOT_ENTRY_SIZE * 2); | |
a06ea964 NC |
9608 | |
9609 | plt_base = htab->root.splt->output_section->vma + | |
f44a1f8e | 9610 | htab->root.splt->output_offset; |
a06ea964 | 9611 | |
37c18eed SD |
9612 | /* First instruction in BTI enabled PLT stub is a BTI |
9613 | instruction so skip it. */ | |
9614 | bfd_byte *plt0_entry = htab->root.splt->contents; | |
9615 | if (elf_aarch64_tdata (output_bfd)->plt_type & PLT_BTI) | |
9616 | plt0_entry = plt0_entry + 4; | |
9617 | ||
a06ea964 NC |
9618 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. |
9619 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 | 9620 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
37c18eed | 9621 | plt0_entry + 4, |
caed7120 | 9622 | PG (plt_got_2nd_ent) - PG (plt_base + 4)); |
a06ea964 | 9623 | |
caed7120 | 9624 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
37c18eed | 9625 | plt0_entry + 8, |
caed7120 | 9626 | PG_OFFSET (plt_got_2nd_ent)); |
a06ea964 | 9627 | |
caed7120 | 9628 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
37c18eed | 9629 | plt0_entry + 12, |
caed7120 | 9630 | PG_OFFSET (plt_got_2nd_ent)); |
a06ea964 NC |
9631 | } |
9632 | ||
9633 | static bfd_boolean | |
cec5225b | 9634 | elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd, |
a06ea964 NC |
9635 | struct bfd_link_info *info) |
9636 | { | |
cec5225b | 9637 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
9638 | bfd *dynobj; |
9639 | asection *sdyn; | |
9640 | ||
cec5225b | 9641 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
9642 | dynobj = htab->root.dynobj; |
9643 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); | |
9644 | ||
9645 | if (htab->root.dynamic_sections_created) | |
9646 | { | |
cec5225b | 9647 | ElfNN_External_Dyn *dyncon, *dynconend; |
a06ea964 NC |
9648 | |
9649 | if (sdyn == NULL || htab->root.sgot == NULL) | |
9650 | abort (); | |
9651 | ||
cec5225b YZ |
9652 | dyncon = (ElfNN_External_Dyn *) sdyn->contents; |
9653 | dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size); | |
a06ea964 NC |
9654 | for (; dyncon < dynconend; dyncon++) |
9655 | { | |
9656 | Elf_Internal_Dyn dyn; | |
9657 | asection *s; | |
9658 | ||
cec5225b | 9659 | bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn); |
a06ea964 NC |
9660 | |
9661 | switch (dyn.d_tag) | |
9662 | { | |
9663 | default: | |
9664 | continue; | |
9665 | ||
9666 | case DT_PLTGOT: | |
9667 | s = htab->root.sgotplt; | |
9668 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
9669 | break; | |
9670 | ||
9671 | case DT_JMPREL: | |
4ade44b7 AM |
9672 | s = htab->root.srelplt; |
9673 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
a06ea964 NC |
9674 | break; |
9675 | ||
9676 | case DT_PLTRELSZ: | |
c955de36 | 9677 | s = htab->root.srelplt; |
a06ea964 NC |
9678 | dyn.d_un.d_val = s->size; |
9679 | break; | |
9680 | ||
a06ea964 NC |
9681 | case DT_TLSDESC_PLT: |
9682 | s = htab->root.splt; | |
9683 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
9684 | + htab->tlsdesc_plt; | |
9685 | break; | |
9686 | ||
9687 | case DT_TLSDESC_GOT: | |
9688 | s = htab->root.sgot; | |
9689 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
9690 | + htab->dt_tlsdesc_got; | |
9691 | break; | |
9692 | } | |
9693 | ||
cec5225b | 9694 | bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon); |
a06ea964 NC |
9695 | } |
9696 | ||
9697 | } | |
9698 | ||
9699 | /* Fill in the special first entry in the procedure linkage table. */ | |
9700 | if (htab->root.splt && htab->root.splt->size > 0) | |
9701 | { | |
cec5225b | 9702 | elfNN_aarch64_init_small_plt0_entry (output_bfd, htab); |
a06ea964 NC |
9703 | |
9704 | elf_section_data (htab->root.splt->output_section)-> | |
9705 | this_hdr.sh_entsize = htab->plt_entry_size; | |
9706 | ||
9707 | ||
9708 | if (htab->tlsdesc_plt) | |
9709 | { | |
cec5225b | 9710 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
9711 | htab->root.sgot->contents + htab->dt_tlsdesc_got); |
9712 | ||
37c18eed SD |
9713 | const bfd_byte *entry = elfNN_aarch64_tlsdesc_small_plt_entry; |
9714 | htab->tlsdesc_plt_entry_size = PLT_TLSDESC_ENTRY_SIZE; | |
9715 | ||
9716 | aarch64_plt_type type = elf_aarch64_tdata (output_bfd)->plt_type; | |
1dbade74 | 9717 | if (type == PLT_BTI || type == PLT_BTI_PAC) |
37c18eed SD |
9718 | { |
9719 | entry = elfNN_aarch64_tlsdesc_small_plt_bti_entry; | |
9720 | htab->tlsdesc_plt_entry_size = PLT_BTI_TLSDESC_ENTRY_SIZE; | |
9721 | } | |
9722 | ||
a06ea964 | 9723 | memcpy (htab->root.splt->contents + htab->tlsdesc_plt, |
37c18eed | 9724 | entry, htab->tlsdesc_plt_entry_size); |
a06ea964 NC |
9725 | |
9726 | { | |
9727 | bfd_vma adrp1_addr = | |
9728 | htab->root.splt->output_section->vma | |
9729 | + htab->root.splt->output_offset + htab->tlsdesc_plt + 4; | |
9730 | ||
caed7120 | 9731 | bfd_vma adrp2_addr = adrp1_addr + 4; |
a06ea964 NC |
9732 | |
9733 | bfd_vma got_addr = | |
9734 | htab->root.sgot->output_section->vma | |
9735 | + htab->root.sgot->output_offset; | |
9736 | ||
9737 | bfd_vma pltgot_addr = | |
9738 | htab->root.sgotplt->output_section->vma | |
9739 | + htab->root.sgotplt->output_offset; | |
9740 | ||
9741 | bfd_vma dt_tlsdesc_got = got_addr + htab->dt_tlsdesc_got; | |
caed7120 YZ |
9742 | |
9743 | bfd_byte *plt_entry = | |
9744 | htab->root.splt->contents + htab->tlsdesc_plt; | |
a06ea964 | 9745 | |
37c18eed SD |
9746 | /* First instruction in BTI enabled PLT stub is a BTI |
9747 | instruction so skip it. */ | |
9748 | if (type & PLT_BTI) | |
9749 | { | |
9750 | plt_entry = plt_entry + 4; | |
9751 | adrp1_addr = adrp1_addr + 4; | |
9752 | adrp2_addr = adrp2_addr + 4; | |
9753 | } | |
9754 | ||
a06ea964 | 9755 | /* adrp x2, DT_TLSDESC_GOT */ |
caed7120 YZ |
9756 | elf_aarch64_update_plt_entry (output_bfd, |
9757 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
9758 | plt_entry + 4, | |
9759 | (PG (dt_tlsdesc_got) | |
9760 | - PG (adrp1_addr))); | |
a06ea964 NC |
9761 | |
9762 | /* adrp x3, 0 */ | |
caed7120 YZ |
9763 | elf_aarch64_update_plt_entry (output_bfd, |
9764 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
9765 | plt_entry + 8, | |
9766 | (PG (pltgot_addr) | |
9767 | - PG (adrp2_addr))); | |
a06ea964 NC |
9768 | |
9769 | /* ldr x2, [x2, #0] */ | |
caed7120 YZ |
9770 | elf_aarch64_update_plt_entry (output_bfd, |
9771 | BFD_RELOC_AARCH64_LDSTNN_LO12, | |
9772 | plt_entry + 12, | |
9773 | PG_OFFSET (dt_tlsdesc_got)); | |
a06ea964 NC |
9774 | |
9775 | /* add x3, x3, 0 */ | |
caed7120 YZ |
9776 | elf_aarch64_update_plt_entry (output_bfd, |
9777 | BFD_RELOC_AARCH64_ADD_LO12, | |
9778 | plt_entry + 16, | |
9779 | PG_OFFSET (pltgot_addr)); | |
a06ea964 NC |
9780 | } |
9781 | } | |
9782 | } | |
9783 | ||
9784 | if (htab->root.sgotplt) | |
9785 | { | |
9786 | if (bfd_is_abs_section (htab->root.sgotplt->output_section)) | |
9787 | { | |
4eca0228 | 9788 | _bfd_error_handler |
871b3ab2 | 9789 | (_("discarded output section: `%pA'"), htab->root.sgotplt); |
a06ea964 NC |
9790 | return FALSE; |
9791 | } | |
9792 | ||
9793 | /* Fill in the first three entries in the global offset table. */ | |
9794 | if (htab->root.sgotplt->size > 0) | |
9795 | { | |
8db339a6 MS |
9796 | bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents); |
9797 | ||
a06ea964 | 9798 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ |
cec5225b | 9799 | bfd_put_NN (output_bfd, |
a06ea964 NC |
9800 | (bfd_vma) 0, |
9801 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE); | |
cec5225b | 9802 | bfd_put_NN (output_bfd, |
a06ea964 NC |
9803 | (bfd_vma) 0, |
9804 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2); | |
9805 | } | |
9806 | ||
8db339a6 MS |
9807 | if (htab->root.sgot) |
9808 | { | |
9809 | if (htab->root.sgot->size > 0) | |
9810 | { | |
9811 | bfd_vma addr = | |
9812 | sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0; | |
9813 | bfd_put_NN (output_bfd, addr, htab->root.sgot->contents); | |
9814 | } | |
9815 | } | |
9816 | ||
a06ea964 NC |
9817 | elf_section_data (htab->root.sgotplt->output_section)-> |
9818 | this_hdr.sh_entsize = GOT_ENTRY_SIZE; | |
9819 | } | |
9820 | ||
9821 | if (htab->root.sgot && htab->root.sgot->size > 0) | |
9822 | elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize | |
9823 | = GOT_ENTRY_SIZE; | |
9824 | ||
1419bbe5 WN |
9825 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
9826 | htab_traverse (htab->loc_hash_table, | |
9827 | elfNN_aarch64_finish_local_dynamic_symbol, | |
9828 | info); | |
9829 | ||
a06ea964 NC |
9830 | return TRUE; |
9831 | } | |
9832 | ||
37c18eed SD |
9833 | /* Check if BTI enabled PLTs are needed. Returns the type needed. */ |
9834 | static aarch64_plt_type | |
9835 | get_plt_type (bfd *abfd) | |
9836 | { | |
9837 | aarch64_plt_type ret = PLT_NORMAL; | |
9838 | bfd_byte *contents, *extdyn, *extdynend; | |
9839 | asection *sec = bfd_get_section_by_name (abfd, ".dynamic"); | |
9840 | if (!sec || !bfd_malloc_and_get_section (abfd, sec, &contents)) | |
9841 | return ret; | |
9842 | extdyn = contents; | |
9843 | extdynend = contents + sec->size; | |
9844 | for (; extdyn < extdynend; extdyn += sizeof (ElfNN_External_Dyn)) | |
9845 | { | |
9846 | Elf_Internal_Dyn dyn; | |
9847 | bfd_elfNN_swap_dyn_in (abfd, extdyn, &dyn); | |
9848 | ||
9849 | /* Let's check the processor specific dynamic array tags. */ | |
9850 | bfd_vma tag = dyn.d_tag; | |
9851 | if (tag < DT_LOPROC || tag > DT_HIPROC) | |
9852 | continue; | |
9853 | ||
9854 | switch (tag) | |
9855 | { | |
9856 | case DT_AARCH64_BTI_PLT: | |
1dbade74 SD |
9857 | ret |= PLT_BTI; |
9858 | break; | |
9859 | ||
9860 | case DT_AARCH64_PAC_PLT: | |
9861 | ret |= PLT_PAC; | |
37c18eed SD |
9862 | break; |
9863 | ||
9864 | default: break; | |
9865 | } | |
9866 | } | |
9867 | free (contents); | |
9868 | return ret; | |
9869 | } | |
9870 | ||
9871 | static long | |
9872 | elfNN_aarch64_get_synthetic_symtab (bfd *abfd, | |
9873 | long symcount, | |
9874 | asymbol **syms, | |
9875 | long dynsymcount, | |
9876 | asymbol **dynsyms, | |
9877 | asymbol **ret) | |
9878 | { | |
9879 | elf_aarch64_tdata (abfd)->plt_type = get_plt_type (abfd); | |
9880 | return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms, | |
9881 | dynsymcount, dynsyms, ret); | |
9882 | } | |
9883 | ||
a06ea964 NC |
9884 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
9885 | or (bfd_vma) -1 if it should not be included. */ | |
9886 | ||
9887 | static bfd_vma | |
cec5225b | 9888 | elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt, |
a06ea964 NC |
9889 | const arelent *rel ATTRIBUTE_UNUSED) |
9890 | { | |
37c18eed SD |
9891 | size_t plt0_size = PLT_ENTRY_SIZE; |
9892 | size_t pltn_size = PLT_SMALL_ENTRY_SIZE; | |
9893 | ||
1dbade74 SD |
9894 | if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_BTI_PAC) |
9895 | { | |
9896 | plt0_size = PLT_BTI_PAC_ENTRY_SIZE; | |
9897 | if (elf_elfheader (plt->owner)->e_type == ET_EXEC) | |
9898 | pltn_size = PLT_BTI_PAC_SMALL_ENTRY_SIZE; | |
9899 | else | |
9900 | pltn_size = PLT_PAC_SMALL_ENTRY_SIZE; | |
9901 | } | |
9902 | else if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_BTI) | |
37c18eed SD |
9903 | { |
9904 | plt0_size = PLT_BTI_ENTRY_SIZE; | |
9905 | if (elf_elfheader (plt->owner)->e_type == ET_EXEC) | |
9906 | pltn_size = PLT_BTI_SMALL_ENTRY_SIZE; | |
9907 | } | |
1dbade74 SD |
9908 | else if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_PAC) |
9909 | { | |
9910 | plt0_size = PLT_PAC_ENTRY_SIZE; | |
9911 | pltn_size = PLT_PAC_SMALL_ENTRY_SIZE; | |
9912 | } | |
9913 | ||
37c18eed | 9914 | return plt->vma + plt0_size + i * pltn_size; |
a06ea964 NC |
9915 | } |
9916 | ||
d691934d NC |
9917 | /* Returns TRUE if NAME is an AArch64 mapping symbol. |
9918 | The ARM ELF standard defines $x (for A64 code) and $d (for data). | |
9919 | It also allows a period initiated suffix to be added to the symbol, ie: | |
9920 | "$[adtx]\.[:sym_char]+". */ | |
9921 | ||
9922 | static bfd_boolean | |
9923 | is_aarch64_mapping_symbol (const char * name) | |
9924 | { | |
9925 | return name != NULL /* Paranoia. */ | |
9926 | && name[0] == '$' /* Note: if objcopy --prefix-symbols has been used then | |
9927 | the mapping symbols could have acquired a prefix. | |
9928 | We do not support this here, since such symbols no | |
9929 | longer conform to the ARM ELF ABI. */ | |
9930 | && (name[1] == 'd' || name[1] == 'x') | |
9931 | && (name[2] == 0 || name[2] == '.'); | |
9932 | /* FIXME: Strictly speaking the symbol is only a valid mapping symbol if | |
9933 | any characters that follow the period are legal characters for the body | |
9934 | of a symbol's name. For now we just assume that this is the case. */ | |
9935 | } | |
9936 | ||
9937 | /* Make sure that mapping symbols in object files are not removed via the | |
9938 | "strip --strip-unneeded" tool. These symbols might needed in order to | |
9939 | correctly generate linked files. Once an object file has been linked, | |
9940 | it should be safe to remove them. */ | |
9941 | ||
9942 | static void | |
9943 | elfNN_aarch64_backend_symbol_processing (bfd *abfd, asymbol *sym) | |
9944 | { | |
9945 | if (((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
9946 | && sym->section != bfd_abs_section_ptr | |
9947 | && is_aarch64_mapping_symbol (sym->name)) | |
9948 | sym->flags |= BSF_KEEP; | |
9949 | } | |
9950 | ||
cd702818 SD |
9951 | /* Implement elf_backend_setup_gnu_properties for AArch64. It serves as a |
9952 | wrapper function for _bfd_aarch64_elf_link_setup_gnu_properties to account | |
9953 | for the effect of GNU properties of the output_bfd. */ | |
9954 | static bfd * | |
9955 | elfNN_aarch64_link_setup_gnu_properties (struct bfd_link_info *info) | |
9956 | { | |
9957 | uint32_t prop = elf_aarch64_tdata (info->output_bfd)->gnu_and_prop; | |
9958 | bfd *pbfd = _bfd_aarch64_elf_link_setup_gnu_properties (info, &prop); | |
9959 | elf_aarch64_tdata (info->output_bfd)->gnu_and_prop = prop; | |
37c18eed SD |
9960 | elf_aarch64_tdata (info->output_bfd)->plt_type |
9961 | |= (prop & GNU_PROPERTY_AARCH64_FEATURE_1_BTI) ? PLT_BTI : 0; | |
9962 | setup_plt_values (info, elf_aarch64_tdata (info->output_bfd)->plt_type); | |
cd702818 SD |
9963 | return pbfd; |
9964 | } | |
9965 | ||
9966 | /* Implement elf_backend_merge_gnu_properties for AArch64. It serves as a | |
9967 | wrapper function for _bfd_aarch64_elf_merge_gnu_properties to account | |
9968 | for the effect of GNU properties of the output_bfd. */ | |
9969 | static bfd_boolean | |
9970 | elfNN_aarch64_merge_gnu_properties (struct bfd_link_info *info, | |
9971 | bfd *abfd, | |
9972 | elf_property *aprop, | |
9973 | elf_property *bprop) | |
9974 | { | |
9975 | uint32_t prop | |
9976 | = elf_aarch64_tdata (info->output_bfd)->gnu_and_prop; | |
37c18eed SD |
9977 | |
9978 | /* If output has been marked with BTI using command line argument, give out | |
9979 | warning if necessary. */ | |
9980 | if ((prop & GNU_PROPERTY_AARCH64_FEATURE_1_BTI) | |
9981 | && (!elf_aarch64_tdata (info->output_bfd)->no_bti_warn)) | |
9982 | { | |
9983 | if ((aprop && !(aprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI)) | |
9984 | || (bprop && !(bprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI)) | |
9985 | /* If either property is NULL, it means its bfd did not have any | |
9986 | property. */ | |
9987 | || !aprop || !bprop) | |
9988 | { | |
9989 | _bfd_error_handler (_("warning: BTI turned on by --force-bti when " | |
9990 | "all inputs do not have BTI in NOTE section.")); | |
9991 | } | |
9992 | } | |
9993 | ||
cd702818 SD |
9994 | return _bfd_aarch64_elf_merge_gnu_properties (info, abfd, aprop, |
9995 | bprop, prop); | |
9996 | } | |
a06ea964 NC |
9997 | |
9998 | /* We use this so we can override certain functions | |
9999 | (though currently we don't). */ | |
10000 | ||
cec5225b | 10001 | const struct elf_size_info elfNN_aarch64_size_info = |
a06ea964 | 10002 | { |
cec5225b YZ |
10003 | sizeof (ElfNN_External_Ehdr), |
10004 | sizeof (ElfNN_External_Phdr), | |
10005 | sizeof (ElfNN_External_Shdr), | |
10006 | sizeof (ElfNN_External_Rel), | |
10007 | sizeof (ElfNN_External_Rela), | |
10008 | sizeof (ElfNN_External_Sym), | |
10009 | sizeof (ElfNN_External_Dyn), | |
a06ea964 NC |
10010 | sizeof (Elf_External_Note), |
10011 | 4, /* Hash table entry size. */ | |
10012 | 1, /* Internal relocs per external relocs. */ | |
cec5225b YZ |
10013 | ARCH_SIZE, /* Arch size. */ |
10014 | LOG_FILE_ALIGN, /* Log_file_align. */ | |
10015 | ELFCLASSNN, EV_CURRENT, | |
10016 | bfd_elfNN_write_out_phdrs, | |
10017 | bfd_elfNN_write_shdrs_and_ehdr, | |
10018 | bfd_elfNN_checksum_contents, | |
10019 | bfd_elfNN_write_relocs, | |
10020 | bfd_elfNN_swap_symbol_in, | |
10021 | bfd_elfNN_swap_symbol_out, | |
10022 | bfd_elfNN_slurp_reloc_table, | |
10023 | bfd_elfNN_slurp_symbol_table, | |
10024 | bfd_elfNN_swap_dyn_in, | |
10025 | bfd_elfNN_swap_dyn_out, | |
10026 | bfd_elfNN_swap_reloc_in, | |
10027 | bfd_elfNN_swap_reloc_out, | |
10028 | bfd_elfNN_swap_reloca_in, | |
10029 | bfd_elfNN_swap_reloca_out | |
a06ea964 NC |
10030 | }; |
10031 | ||
10032 | #define ELF_ARCH bfd_arch_aarch64 | |
10033 | #define ELF_MACHINE_CODE EM_AARCH64 | |
10034 | #define ELF_MAXPAGESIZE 0x10000 | |
10035 | #define ELF_MINPAGESIZE 0x1000 | |
10036 | #define ELF_COMMONPAGESIZE 0x1000 | |
10037 | ||
07d6d2b8 | 10038 | #define bfd_elfNN_close_and_cleanup \ |
cec5225b | 10039 | elfNN_aarch64_close_and_cleanup |
a06ea964 | 10040 | |
07d6d2b8 | 10041 | #define bfd_elfNN_bfd_free_cached_info \ |
cec5225b | 10042 | elfNN_aarch64_bfd_free_cached_info |
a06ea964 | 10043 | |
cec5225b YZ |
10044 | #define bfd_elfNN_bfd_is_target_special_symbol \ |
10045 | elfNN_aarch64_is_target_special_symbol | |
a06ea964 | 10046 | |
07d6d2b8 | 10047 | #define bfd_elfNN_bfd_link_hash_table_create \ |
cec5225b | 10048 | elfNN_aarch64_link_hash_table_create |
a06ea964 | 10049 | |
cec5225b YZ |
10050 | #define bfd_elfNN_bfd_merge_private_bfd_data \ |
10051 | elfNN_aarch64_merge_private_bfd_data | |
a06ea964 | 10052 | |
cec5225b YZ |
10053 | #define bfd_elfNN_bfd_print_private_bfd_data \ |
10054 | elfNN_aarch64_print_private_bfd_data | |
a06ea964 | 10055 | |
cec5225b YZ |
10056 | #define bfd_elfNN_bfd_reloc_type_lookup \ |
10057 | elfNN_aarch64_reloc_type_lookup | |
a06ea964 | 10058 | |
cec5225b YZ |
10059 | #define bfd_elfNN_bfd_reloc_name_lookup \ |
10060 | elfNN_aarch64_reloc_name_lookup | |
a06ea964 | 10061 | |
cec5225b YZ |
10062 | #define bfd_elfNN_bfd_set_private_flags \ |
10063 | elfNN_aarch64_set_private_flags | |
a06ea964 | 10064 | |
cec5225b YZ |
10065 | #define bfd_elfNN_find_inliner_info \ |
10066 | elfNN_aarch64_find_inliner_info | |
a06ea964 | 10067 | |
cec5225b YZ |
10068 | #define bfd_elfNN_find_nearest_line \ |
10069 | elfNN_aarch64_find_nearest_line | |
a06ea964 | 10070 | |
37c18eed SD |
10071 | #define bfd_elfNN_get_synthetic_symtab \ |
10072 | elfNN_aarch64_get_synthetic_symtab | |
10073 | ||
cec5225b YZ |
10074 | #define bfd_elfNN_mkobject \ |
10075 | elfNN_aarch64_mkobject | |
a06ea964 | 10076 | |
cec5225b YZ |
10077 | #define bfd_elfNN_new_section_hook \ |
10078 | elfNN_aarch64_new_section_hook | |
a06ea964 NC |
10079 | |
10080 | #define elf_backend_adjust_dynamic_symbol \ | |
cec5225b | 10081 | elfNN_aarch64_adjust_dynamic_symbol |
a06ea964 NC |
10082 | |
10083 | #define elf_backend_always_size_sections \ | |
cec5225b | 10084 | elfNN_aarch64_always_size_sections |
a06ea964 NC |
10085 | |
10086 | #define elf_backend_check_relocs \ | |
cec5225b | 10087 | elfNN_aarch64_check_relocs |
a06ea964 NC |
10088 | |
10089 | #define elf_backend_copy_indirect_symbol \ | |
cec5225b | 10090 | elfNN_aarch64_copy_indirect_symbol |
a06ea964 NC |
10091 | |
10092 | /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts | |
10093 | to them in our hash. */ | |
10094 | #define elf_backend_create_dynamic_sections \ | |
cec5225b | 10095 | elfNN_aarch64_create_dynamic_sections |
a06ea964 NC |
10096 | |
10097 | #define elf_backend_init_index_section \ | |
10098 | _bfd_elf_init_2_index_sections | |
10099 | ||
a06ea964 | 10100 | #define elf_backend_finish_dynamic_sections \ |
cec5225b | 10101 | elfNN_aarch64_finish_dynamic_sections |
a06ea964 NC |
10102 | |
10103 | #define elf_backend_finish_dynamic_symbol \ | |
cec5225b | 10104 | elfNN_aarch64_finish_dynamic_symbol |
a06ea964 | 10105 | |
a06ea964 | 10106 | #define elf_backend_object_p \ |
cec5225b | 10107 | elfNN_aarch64_object_p |
a06ea964 | 10108 | |
07d6d2b8 | 10109 | #define elf_backend_output_arch_local_syms \ |
cec5225b | 10110 | elfNN_aarch64_output_arch_local_syms |
a06ea964 NC |
10111 | |
10112 | #define elf_backend_plt_sym_val \ | |
cec5225b | 10113 | elfNN_aarch64_plt_sym_val |
a06ea964 NC |
10114 | |
10115 | #define elf_backend_post_process_headers \ | |
cec5225b | 10116 | elfNN_aarch64_post_process_headers |
a06ea964 NC |
10117 | |
10118 | #define elf_backend_relocate_section \ | |
cec5225b | 10119 | elfNN_aarch64_relocate_section |
a06ea964 NC |
10120 | |
10121 | #define elf_backend_reloc_type_class \ | |
cec5225b | 10122 | elfNN_aarch64_reloc_type_class |
a06ea964 | 10123 | |
a06ea964 | 10124 | #define elf_backend_section_from_shdr \ |
cec5225b | 10125 | elfNN_aarch64_section_from_shdr |
a06ea964 NC |
10126 | |
10127 | #define elf_backend_size_dynamic_sections \ | |
cec5225b | 10128 | elfNN_aarch64_size_dynamic_sections |
a06ea964 NC |
10129 | |
10130 | #define elf_backend_size_info \ | |
cec5225b | 10131 | elfNN_aarch64_size_info |
a06ea964 | 10132 | |
68fcca92 JW |
10133 | #define elf_backend_write_section \ |
10134 | elfNN_aarch64_write_section | |
10135 | ||
d691934d NC |
10136 | #define elf_backend_symbol_processing \ |
10137 | elfNN_aarch64_backend_symbol_processing | |
10138 | ||
cd702818 SD |
10139 | #define elf_backend_setup_gnu_properties \ |
10140 | elfNN_aarch64_link_setup_gnu_properties | |
10141 | ||
10142 | #define elf_backend_merge_gnu_properties \ | |
10143 | elfNN_aarch64_merge_gnu_properties | |
10144 | ||
a06ea964 | 10145 | #define elf_backend_can_refcount 1 |
59c108f7 | 10146 | #define elf_backend_can_gc_sections 1 |
a06ea964 NC |
10147 | #define elf_backend_plt_readonly 1 |
10148 | #define elf_backend_want_got_plt 1 | |
10149 | #define elf_backend_want_plt_sym 0 | |
5474d94f | 10150 | #define elf_backend_want_dynrelro 1 |
a06ea964 NC |
10151 | #define elf_backend_may_use_rel_p 0 |
10152 | #define elf_backend_may_use_rela_p 1 | |
10153 | #define elf_backend_default_use_rela_p 1 | |
07d6d2b8 | 10154 | #define elf_backend_rela_normal 1 |
64f52338 | 10155 | #define elf_backend_dtrel_excludes_plt 1 |
a06ea964 | 10156 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3) |
c495064d | 10157 | #define elf_backend_default_execstack 0 |
32f573bc | 10158 | #define elf_backend_extern_protected_data 1 |
7f784814 | 10159 | #define elf_backend_hash_symbol elf_aarch64_hash_symbol |
a06ea964 | 10160 | |
07d6d2b8 | 10161 | #undef elf_backend_obj_attrs_section |
a06ea964 NC |
10162 | #define elf_backend_obj_attrs_section ".ARM.attributes" |
10163 | ||
cec5225b | 10164 | #include "elfNN-target.h" |
a75cf613 ES |
10165 | |
10166 | /* CloudABI support. */ | |
10167 | ||
10168 | #undef TARGET_LITTLE_SYM | |
10169 | #define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec | |
10170 | #undef TARGET_LITTLE_NAME | |
10171 | #define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi" | |
10172 | #undef TARGET_BIG_SYM | |
10173 | #define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec | |
10174 | #undef TARGET_BIG_NAME | |
10175 | #define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi" | |
10176 | ||
10177 | #undef ELF_OSABI | |
10178 | #define ELF_OSABI ELFOSABI_CLOUDABI | |
10179 | ||
10180 | #undef elfNN_bed | |
10181 | #define elfNN_bed elfNN_aarch64_cloudabi_bed | |
10182 | ||
10183 | #include "elfNN-target.h" |