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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 | 270 | /* PLT sizes with BTI insn. */ |
68bb0359 | 271 | #define PLT_BTI_SMALL_ENTRY_SIZE (24) |
1dbade74 | 272 | /* PLT sizes with PAC insn. */ |
68bb0359 | 273 | #define PLT_PAC_SMALL_ENTRY_SIZE (24) |
1dbade74 | 274 | /* PLT sizes with BTI and PAC insn. */ |
1dbade74 | 275 | #define PLT_BTI_PAC_SMALL_ENTRY_SIZE (24) |
a06ea964 | 276 | |
2d0ca824 | 277 | /* Encoding of the nop instruction. */ |
a06ea964 NC |
278 | #define INSN_NOP 0xd503201f |
279 | ||
280 | #define aarch64_compute_jump_table_size(htab) \ | |
281 | (((htab)->root.srelplt == NULL) ? 0 \ | |
282 | : (htab)->root.srelplt->reloc_count * GOT_ENTRY_SIZE) | |
283 | ||
284 | /* The first entry in a procedure linkage table looks like this | |
285 | if the distance between the PLTGOT and the PLT is < 4GB use | |
286 | these PLT entries. Note that the dynamic linker gets &PLTGOT[2] | |
287 | in x16 and needs to work out PLTGOT[1] by using an address of | |
cec5225b YZ |
288 | [x16,#-GOT_ENTRY_SIZE]. */ |
289 | static const bfd_byte elfNN_aarch64_small_plt0_entry[PLT_ENTRY_SIZE] = | |
a06ea964 NC |
290 | { |
291 | 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */ | |
292 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */ | |
caed7120 | 293 | #if ARCH_SIZE == 64 |
a06ea964 NC |
294 | 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */ |
295 | 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */ | |
caed7120 YZ |
296 | #else |
297 | 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */ | |
298 | 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */ | |
299 | #endif | |
a06ea964 NC |
300 | 0x20, 0x02, 0x1f, 0xd6, /* br x17 */ |
301 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
302 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
303 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
304 | }; | |
305 | ||
68bb0359 | 306 | static const bfd_byte elfNN_aarch64_small_plt0_bti_entry[PLT_ENTRY_SIZE] = |
37c18eed SD |
307 | { |
308 | 0x5f, 0x24, 0x03, 0xd5, /* bti c. */ | |
309 | 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */ | |
310 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */ | |
311 | #if ARCH_SIZE == 64 | |
312 | 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */ | |
313 | 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */ | |
314 | #else | |
315 | 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */ | |
316 | 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */ | |
317 | #endif | |
318 | 0x20, 0x02, 0x1f, 0xd6, /* br x17 */ | |
319 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
320 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
1dbade74 SD |
321 | }; |
322 | ||
a06ea964 NC |
323 | /* Per function entry in a procedure linkage table looks like this |
324 | if the distance between the PLTGOT and the PLT is < 4GB use | |
37c18eed | 325 | these PLT entries. Use BTI versions of the PLTs when enabled. */ |
cec5225b | 326 | static const bfd_byte elfNN_aarch64_small_plt_entry[PLT_SMALL_ENTRY_SIZE] = |
a06ea964 NC |
327 | { |
328 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
caed7120 | 329 | #if ARCH_SIZE == 64 |
a06ea964 NC |
330 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ |
331 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
caed7120 YZ |
332 | #else |
333 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
334 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
335 | #endif | |
a06ea964 NC |
336 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ |
337 | }; | |
338 | ||
37c18eed SD |
339 | static const bfd_byte |
340 | elfNN_aarch64_small_plt_bti_entry[PLT_BTI_SMALL_ENTRY_SIZE] = | |
341 | { | |
342 | 0x5f, 0x24, 0x03, 0xd5, /* bti c. */ | |
343 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
344 | #if ARCH_SIZE == 64 | |
345 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ | |
346 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
347 | #else | |
348 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
349 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
350 | #endif | |
351 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ | |
68bb0359 | 352 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ |
37c18eed SD |
353 | }; |
354 | ||
1dbade74 SD |
355 | static const bfd_byte |
356 | elfNN_aarch64_small_plt_pac_entry[PLT_PAC_SMALL_ENTRY_SIZE] = | |
357 | { | |
358 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
359 | #if ARCH_SIZE == 64 | |
360 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ | |
361 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
362 | #else | |
363 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
364 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
365 | #endif | |
366 | 0x9f, 0x21, 0x03, 0xd5, /* autia1716 */ | |
367 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ | |
68bb0359 | 368 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ |
1dbade74 SD |
369 | }; |
370 | ||
371 | static const bfd_byte | |
372 | elfNN_aarch64_small_plt_bti_pac_entry[PLT_BTI_PAC_SMALL_ENTRY_SIZE] = | |
373 | { | |
374 | 0x5f, 0x24, 0x03, 0xd5, /* bti c. */ | |
375 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
376 | #if ARCH_SIZE == 64 | |
377 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ | |
378 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
379 | #else | |
380 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
381 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
382 | #endif | |
383 | 0x9f, 0x21, 0x03, 0xd5, /* autia1716 */ | |
384 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ | |
385 | }; | |
386 | ||
a06ea964 | 387 | static const bfd_byte |
cec5225b | 388 | elfNN_aarch64_tlsdesc_small_plt_entry[PLT_TLSDESC_ENTRY_SIZE] = |
a06ea964 NC |
389 | { |
390 | 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */ | |
391 | 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */ | |
392 | 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */ | |
caed7120 YZ |
393 | #if ARCH_SIZE == 64 |
394 | 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */ | |
a06ea964 | 395 | 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */ |
caed7120 YZ |
396 | #else |
397 | 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */ | |
398 | 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */ | |
399 | #endif | |
400 | 0x40, 0x00, 0x1f, 0xd6, /* br x2 */ | |
a06ea964 NC |
401 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ |
402 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
403 | }; | |
404 | ||
37c18eed | 405 | static const bfd_byte |
68bb0359 | 406 | elfNN_aarch64_tlsdesc_small_plt_bti_entry[PLT_TLSDESC_ENTRY_SIZE] = |
37c18eed SD |
407 | { |
408 | 0x5f, 0x24, 0x03, 0xd5, /* bti c. */ | |
409 | 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */ | |
410 | 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */ | |
411 | 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */ | |
412 | #if ARCH_SIZE == 64 | |
413 | 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */ | |
414 | 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */ | |
415 | #else | |
416 | 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */ | |
417 | 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */ | |
418 | #endif | |
419 | 0x40, 0x00, 0x1f, 0xd6, /* br x2 */ | |
420 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
37c18eed SD |
421 | }; |
422 | ||
07d6d2b8 AM |
423 | #define elf_info_to_howto elfNN_aarch64_info_to_howto |
424 | #define elf_info_to_howto_rel elfNN_aarch64_info_to_howto | |
a06ea964 NC |
425 | |
426 | #define AARCH64_ELF_ABI_VERSION 0 | |
a06ea964 NC |
427 | |
428 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ | |
429 | #define ALL_ONES (~ (bfd_vma) 0) | |
430 | ||
a6bb11b2 YZ |
431 | /* Indexed by the bfd interal reloc enumerators. |
432 | Therefore, the table needs to be synced with BFD_RELOC_AARCH64_* | |
433 | in reloc.c. */ | |
a06ea964 | 434 | |
a6bb11b2 | 435 | static reloc_howto_type elfNN_aarch64_howto_table[] = |
a06ea964 | 436 | { |
a6bb11b2 | 437 | EMPTY_HOWTO (0), |
a06ea964 | 438 | |
a6bb11b2 | 439 | /* Basic data relocations. */ |
a06ea964 | 440 | |
b7f28d87 JW |
441 | /* Deprecated, but retained for backwards compatibility. */ |
442 | HOWTO64 (R_AARCH64_NULL, /* type */ | |
a06ea964 | 443 | 0, /* rightshift */ |
6346d5ca | 444 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a6bb11b2 | 445 | 0, /* bitsize */ |
a06ea964 NC |
446 | FALSE, /* pc_relative */ |
447 | 0, /* bitpos */ | |
448 | complain_overflow_dont, /* complain_on_overflow */ | |
449 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 450 | "R_AARCH64_NULL", /* name */ |
a06ea964 NC |
451 | FALSE, /* partial_inplace */ |
452 | 0, /* src_mask */ | |
a6bb11b2 | 453 | 0, /* dst_mask */ |
a06ea964 | 454 | FALSE), /* pcrel_offset */ |
a6bb11b2 | 455 | HOWTO (R_AARCH64_NONE, /* type */ |
a06ea964 | 456 | 0, /* rightshift */ |
6346d5ca | 457 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a06ea964 NC |
458 | 0, /* bitsize */ |
459 | FALSE, /* pc_relative */ | |
460 | 0, /* bitpos */ | |
461 | complain_overflow_dont, /* complain_on_overflow */ | |
462 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 463 | "R_AARCH64_NONE", /* name */ |
a06ea964 NC |
464 | FALSE, /* partial_inplace */ |
465 | 0, /* src_mask */ | |
466 | 0, /* dst_mask */ | |
467 | FALSE), /* pcrel_offset */ | |
468 | ||
469 | /* .xword: (S+A) */ | |
a6bb11b2 | 470 | HOWTO64 (AARCH64_R (ABS64), /* type */ |
a06ea964 NC |
471 | 0, /* rightshift */ |
472 | 4, /* size (4 = long long) */ | |
473 | 64, /* bitsize */ | |
474 | FALSE, /* pc_relative */ | |
475 | 0, /* bitpos */ | |
476 | complain_overflow_unsigned, /* complain_on_overflow */ | |
477 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 478 | AARCH64_R_STR (ABS64), /* name */ |
a06ea964 NC |
479 | FALSE, /* partial_inplace */ |
480 | ALL_ONES, /* src_mask */ | |
481 | ALL_ONES, /* dst_mask */ | |
482 | FALSE), /* pcrel_offset */ | |
483 | ||
484 | /* .word: (S+A) */ | |
a6bb11b2 | 485 | HOWTO (AARCH64_R (ABS32), /* type */ |
a06ea964 NC |
486 | 0, /* rightshift */ |
487 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
488 | 32, /* bitsize */ | |
489 | FALSE, /* pc_relative */ | |
490 | 0, /* bitpos */ | |
491 | complain_overflow_unsigned, /* complain_on_overflow */ | |
492 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 493 | AARCH64_R_STR (ABS32), /* name */ |
a06ea964 NC |
494 | FALSE, /* partial_inplace */ |
495 | 0xffffffff, /* src_mask */ | |
496 | 0xffffffff, /* dst_mask */ | |
497 | FALSE), /* pcrel_offset */ | |
498 | ||
499 | /* .half: (S+A) */ | |
a6bb11b2 | 500 | HOWTO (AARCH64_R (ABS16), /* type */ |
a06ea964 NC |
501 | 0, /* rightshift */ |
502 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
503 | 16, /* bitsize */ | |
504 | FALSE, /* pc_relative */ | |
505 | 0, /* bitpos */ | |
506 | complain_overflow_unsigned, /* complain_on_overflow */ | |
507 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 508 | AARCH64_R_STR (ABS16), /* name */ |
a06ea964 NC |
509 | FALSE, /* partial_inplace */ |
510 | 0xffff, /* src_mask */ | |
511 | 0xffff, /* dst_mask */ | |
512 | FALSE), /* pcrel_offset */ | |
513 | ||
514 | /* .xword: (S+A-P) */ | |
a6bb11b2 | 515 | HOWTO64 (AARCH64_R (PREL64), /* type */ |
a06ea964 NC |
516 | 0, /* rightshift */ |
517 | 4, /* size (4 = long long) */ | |
518 | 64, /* bitsize */ | |
519 | TRUE, /* pc_relative */ | |
520 | 0, /* bitpos */ | |
521 | complain_overflow_signed, /* complain_on_overflow */ | |
522 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 523 | AARCH64_R_STR (PREL64), /* name */ |
a06ea964 NC |
524 | FALSE, /* partial_inplace */ |
525 | ALL_ONES, /* src_mask */ | |
526 | ALL_ONES, /* dst_mask */ | |
527 | TRUE), /* pcrel_offset */ | |
528 | ||
529 | /* .word: (S+A-P) */ | |
a6bb11b2 | 530 | HOWTO (AARCH64_R (PREL32), /* type */ |
a06ea964 NC |
531 | 0, /* rightshift */ |
532 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
533 | 32, /* bitsize */ | |
534 | TRUE, /* pc_relative */ | |
535 | 0, /* bitpos */ | |
536 | complain_overflow_signed, /* complain_on_overflow */ | |
537 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 538 | AARCH64_R_STR (PREL32), /* name */ |
a06ea964 NC |
539 | FALSE, /* partial_inplace */ |
540 | 0xffffffff, /* src_mask */ | |
541 | 0xffffffff, /* dst_mask */ | |
542 | TRUE), /* pcrel_offset */ | |
543 | ||
544 | /* .half: (S+A-P) */ | |
a6bb11b2 | 545 | HOWTO (AARCH64_R (PREL16), /* type */ |
a06ea964 NC |
546 | 0, /* rightshift */ |
547 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
548 | 16, /* bitsize */ | |
549 | TRUE, /* pc_relative */ | |
550 | 0, /* bitpos */ | |
551 | complain_overflow_signed, /* complain_on_overflow */ | |
552 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 553 | AARCH64_R_STR (PREL16), /* name */ |
a06ea964 NC |
554 | FALSE, /* partial_inplace */ |
555 | 0xffff, /* src_mask */ | |
556 | 0xffff, /* dst_mask */ | |
557 | TRUE), /* pcrel_offset */ | |
558 | ||
559 | /* Group relocations to create a 16, 32, 48 or 64 bit | |
560 | unsigned data or abs address inline. */ | |
561 | ||
562 | /* MOVZ: ((S+A) >> 0) & 0xffff */ | |
a6bb11b2 | 563 | HOWTO (AARCH64_R (MOVW_UABS_G0), /* type */ |
a06ea964 NC |
564 | 0, /* rightshift */ |
565 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
566 | 16, /* bitsize */ | |
567 | FALSE, /* pc_relative */ | |
568 | 0, /* bitpos */ | |
569 | complain_overflow_unsigned, /* complain_on_overflow */ | |
570 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 571 | AARCH64_R_STR (MOVW_UABS_G0), /* name */ |
a06ea964 NC |
572 | FALSE, /* partial_inplace */ |
573 | 0xffff, /* src_mask */ | |
574 | 0xffff, /* dst_mask */ | |
575 | FALSE), /* pcrel_offset */ | |
576 | ||
577 | /* MOVK: ((S+A) >> 0) & 0xffff [no overflow check] */ | |
a6bb11b2 | 578 | HOWTO (AARCH64_R (MOVW_UABS_G0_NC), /* type */ |
a06ea964 NC |
579 | 0, /* rightshift */ |
580 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
581 | 16, /* bitsize */ | |
582 | FALSE, /* pc_relative */ | |
583 | 0, /* bitpos */ | |
584 | complain_overflow_dont, /* complain_on_overflow */ | |
585 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 586 | AARCH64_R_STR (MOVW_UABS_G0_NC), /* name */ |
a06ea964 NC |
587 | FALSE, /* partial_inplace */ |
588 | 0xffff, /* src_mask */ | |
589 | 0xffff, /* dst_mask */ | |
590 | FALSE), /* pcrel_offset */ | |
591 | ||
592 | /* MOVZ: ((S+A) >> 16) & 0xffff */ | |
a6bb11b2 | 593 | HOWTO (AARCH64_R (MOVW_UABS_G1), /* type */ |
a06ea964 NC |
594 | 16, /* rightshift */ |
595 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
596 | 16, /* bitsize */ | |
597 | FALSE, /* pc_relative */ | |
598 | 0, /* bitpos */ | |
599 | complain_overflow_unsigned, /* complain_on_overflow */ | |
600 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 601 | AARCH64_R_STR (MOVW_UABS_G1), /* name */ |
a06ea964 NC |
602 | FALSE, /* partial_inplace */ |
603 | 0xffff, /* src_mask */ | |
604 | 0xffff, /* dst_mask */ | |
605 | FALSE), /* pcrel_offset */ | |
606 | ||
607 | /* MOVK: ((S+A) >> 16) & 0xffff [no overflow check] */ | |
a6bb11b2 | 608 | HOWTO64 (AARCH64_R (MOVW_UABS_G1_NC), /* type */ |
a06ea964 NC |
609 | 16, /* rightshift */ |
610 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
611 | 16, /* bitsize */ | |
612 | FALSE, /* pc_relative */ | |
613 | 0, /* bitpos */ | |
614 | complain_overflow_dont, /* complain_on_overflow */ | |
615 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 616 | AARCH64_R_STR (MOVW_UABS_G1_NC), /* name */ |
a06ea964 NC |
617 | FALSE, /* partial_inplace */ |
618 | 0xffff, /* src_mask */ | |
619 | 0xffff, /* dst_mask */ | |
620 | FALSE), /* pcrel_offset */ | |
621 | ||
622 | /* MOVZ: ((S+A) >> 32) & 0xffff */ | |
a6bb11b2 | 623 | HOWTO64 (AARCH64_R (MOVW_UABS_G2), /* type */ |
a06ea964 NC |
624 | 32, /* rightshift */ |
625 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
626 | 16, /* bitsize */ | |
627 | FALSE, /* pc_relative */ | |
628 | 0, /* bitpos */ | |
629 | complain_overflow_unsigned, /* complain_on_overflow */ | |
630 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 631 | AARCH64_R_STR (MOVW_UABS_G2), /* name */ |
a06ea964 NC |
632 | FALSE, /* partial_inplace */ |
633 | 0xffff, /* src_mask */ | |
634 | 0xffff, /* dst_mask */ | |
635 | FALSE), /* pcrel_offset */ | |
636 | ||
637 | /* MOVK: ((S+A) >> 32) & 0xffff [no overflow check] */ | |
a6bb11b2 | 638 | HOWTO64 (AARCH64_R (MOVW_UABS_G2_NC), /* type */ |
a06ea964 NC |
639 | 32, /* rightshift */ |
640 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
641 | 16, /* bitsize */ | |
642 | FALSE, /* pc_relative */ | |
643 | 0, /* bitpos */ | |
644 | complain_overflow_dont, /* complain_on_overflow */ | |
645 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 646 | AARCH64_R_STR (MOVW_UABS_G2_NC), /* name */ |
a06ea964 NC |
647 | FALSE, /* partial_inplace */ |
648 | 0xffff, /* src_mask */ | |
649 | 0xffff, /* dst_mask */ | |
650 | FALSE), /* pcrel_offset */ | |
651 | ||
652 | /* MOVZ: ((S+A) >> 48) & 0xffff */ | |
a6bb11b2 | 653 | HOWTO64 (AARCH64_R (MOVW_UABS_G3), /* type */ |
a06ea964 NC |
654 | 48, /* rightshift */ |
655 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
656 | 16, /* bitsize */ | |
657 | FALSE, /* pc_relative */ | |
658 | 0, /* bitpos */ | |
659 | complain_overflow_unsigned, /* complain_on_overflow */ | |
660 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 661 | AARCH64_R_STR (MOVW_UABS_G3), /* name */ |
a06ea964 NC |
662 | FALSE, /* partial_inplace */ |
663 | 0xffff, /* src_mask */ | |
664 | 0xffff, /* dst_mask */ | |
665 | FALSE), /* pcrel_offset */ | |
666 | ||
667 | /* Group relocations to create high part of a 16, 32, 48 or 64 bit | |
668 | signed data or abs address inline. Will change instruction | |
669 | to MOVN or MOVZ depending on sign of calculated value. */ | |
670 | ||
671 | /* MOV[ZN]: ((S+A) >> 0) & 0xffff */ | |
a6bb11b2 | 672 | HOWTO (AARCH64_R (MOVW_SABS_G0), /* type */ |
a06ea964 NC |
673 | 0, /* rightshift */ |
674 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c5e3a364 | 675 | 17, /* bitsize */ |
a06ea964 NC |
676 | FALSE, /* pc_relative */ |
677 | 0, /* bitpos */ | |
678 | complain_overflow_signed, /* complain_on_overflow */ | |
679 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 680 | AARCH64_R_STR (MOVW_SABS_G0), /* name */ |
a06ea964 NC |
681 | FALSE, /* partial_inplace */ |
682 | 0xffff, /* src_mask */ | |
683 | 0xffff, /* dst_mask */ | |
684 | FALSE), /* pcrel_offset */ | |
685 | ||
686 | /* MOV[ZN]: ((S+A) >> 16) & 0xffff */ | |
a6bb11b2 | 687 | HOWTO64 (AARCH64_R (MOVW_SABS_G1), /* type */ |
a06ea964 NC |
688 | 16, /* rightshift */ |
689 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c5e3a364 | 690 | 17, /* bitsize */ |
a06ea964 NC |
691 | FALSE, /* pc_relative */ |
692 | 0, /* bitpos */ | |
693 | complain_overflow_signed, /* complain_on_overflow */ | |
694 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 695 | AARCH64_R_STR (MOVW_SABS_G1), /* name */ |
a06ea964 NC |
696 | FALSE, /* partial_inplace */ |
697 | 0xffff, /* src_mask */ | |
698 | 0xffff, /* dst_mask */ | |
699 | FALSE), /* pcrel_offset */ | |
700 | ||
701 | /* MOV[ZN]: ((S+A) >> 32) & 0xffff */ | |
a6bb11b2 | 702 | HOWTO64 (AARCH64_R (MOVW_SABS_G2), /* type */ |
a06ea964 NC |
703 | 32, /* rightshift */ |
704 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c5e3a364 | 705 | 17, /* bitsize */ |
a06ea964 NC |
706 | FALSE, /* pc_relative */ |
707 | 0, /* bitpos */ | |
708 | complain_overflow_signed, /* complain_on_overflow */ | |
709 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 710 | AARCH64_R_STR (MOVW_SABS_G2), /* name */ |
a06ea964 NC |
711 | FALSE, /* partial_inplace */ |
712 | 0xffff, /* src_mask */ | |
713 | 0xffff, /* dst_mask */ | |
714 | FALSE), /* pcrel_offset */ | |
715 | ||
32247401 RL |
716 | /* Group relocations to create a 16, 32, 48 or 64 bit |
717 | PC relative address inline. */ | |
718 | ||
719 | /* MOV[NZ]: ((S+A-P) >> 0) & 0xffff */ | |
720 | HOWTO64 (AARCH64_R (MOVW_PREL_G0), /* type */ | |
721 | 0, /* rightshift */ | |
722 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
723 | 17, /* bitsize */ | |
724 | TRUE, /* pc_relative */ | |
725 | 0, /* bitpos */ | |
726 | complain_overflow_signed, /* complain_on_overflow */ | |
727 | bfd_elf_generic_reloc, /* special_function */ | |
728 | AARCH64_R_STR (MOVW_PREL_G0), /* name */ | |
729 | FALSE, /* partial_inplace */ | |
730 | 0xffff, /* src_mask */ | |
731 | 0xffff, /* dst_mask */ | |
732 | TRUE), /* pcrel_offset */ | |
733 | ||
734 | /* MOVK: ((S+A-P) >> 0) & 0xffff [no overflow check] */ | |
735 | HOWTO64 (AARCH64_R (MOVW_PREL_G0_NC), /* type */ | |
736 | 0, /* rightshift */ | |
737 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
738 | 16, /* bitsize */ | |
739 | TRUE, /* pc_relative */ | |
740 | 0, /* bitpos */ | |
741 | complain_overflow_dont, /* complain_on_overflow */ | |
742 | bfd_elf_generic_reloc, /* special_function */ | |
743 | AARCH64_R_STR (MOVW_PREL_G0_NC), /* name */ | |
744 | FALSE, /* partial_inplace */ | |
745 | 0xffff, /* src_mask */ | |
746 | 0xffff, /* dst_mask */ | |
747 | TRUE), /* pcrel_offset */ | |
748 | ||
749 | /* MOV[NZ]: ((S+A-P) >> 16) & 0xffff */ | |
750 | HOWTO64 (AARCH64_R (MOVW_PREL_G1), /* type */ | |
751 | 16, /* rightshift */ | |
752 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
753 | 17, /* bitsize */ | |
754 | TRUE, /* pc_relative */ | |
755 | 0, /* bitpos */ | |
756 | complain_overflow_signed, /* complain_on_overflow */ | |
757 | bfd_elf_generic_reloc, /* special_function */ | |
758 | AARCH64_R_STR (MOVW_PREL_G1), /* name */ | |
759 | FALSE, /* partial_inplace */ | |
760 | 0xffff, /* src_mask */ | |
761 | 0xffff, /* dst_mask */ | |
762 | TRUE), /* pcrel_offset */ | |
763 | ||
764 | /* MOVK: ((S+A-P) >> 16) & 0xffff [no overflow check] */ | |
765 | HOWTO64 (AARCH64_R (MOVW_PREL_G1_NC), /* type */ | |
766 | 16, /* rightshift */ | |
767 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
768 | 16, /* bitsize */ | |
769 | TRUE, /* pc_relative */ | |
770 | 0, /* bitpos */ | |
771 | complain_overflow_dont, /* complain_on_overflow */ | |
772 | bfd_elf_generic_reloc, /* special_function */ | |
773 | AARCH64_R_STR (MOVW_PREL_G1_NC), /* name */ | |
774 | FALSE, /* partial_inplace */ | |
775 | 0xffff, /* src_mask */ | |
776 | 0xffff, /* dst_mask */ | |
777 | TRUE), /* pcrel_offset */ | |
778 | ||
779 | /* MOV[NZ]: ((S+A-P) >> 32) & 0xffff */ | |
780 | HOWTO64 (AARCH64_R (MOVW_PREL_G2), /* type */ | |
781 | 32, /* rightshift */ | |
782 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
783 | 17, /* bitsize */ | |
784 | TRUE, /* pc_relative */ | |
785 | 0, /* bitpos */ | |
786 | complain_overflow_signed, /* complain_on_overflow */ | |
787 | bfd_elf_generic_reloc, /* special_function */ | |
788 | AARCH64_R_STR (MOVW_PREL_G2), /* name */ | |
789 | FALSE, /* partial_inplace */ | |
790 | 0xffff, /* src_mask */ | |
791 | 0xffff, /* dst_mask */ | |
792 | TRUE), /* pcrel_offset */ | |
793 | ||
794 | /* MOVK: ((S+A-P) >> 32) & 0xffff [no overflow check] */ | |
795 | HOWTO64 (AARCH64_R (MOVW_PREL_G2_NC), /* type */ | |
796 | 32, /* rightshift */ | |
797 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
798 | 16, /* bitsize */ | |
799 | TRUE, /* pc_relative */ | |
800 | 0, /* bitpos */ | |
801 | complain_overflow_dont, /* complain_on_overflow */ | |
802 | bfd_elf_generic_reloc, /* special_function */ | |
803 | AARCH64_R_STR (MOVW_PREL_G2_NC), /* name */ | |
804 | FALSE, /* partial_inplace */ | |
805 | 0xffff, /* src_mask */ | |
806 | 0xffff, /* dst_mask */ | |
807 | TRUE), /* pcrel_offset */ | |
808 | ||
809 | /* MOV[NZ]: ((S+A-P) >> 48) & 0xffff */ | |
810 | HOWTO64 (AARCH64_R (MOVW_PREL_G3), /* type */ | |
811 | 48, /* rightshift */ | |
812 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
813 | 16, /* bitsize */ | |
814 | TRUE, /* pc_relative */ | |
815 | 0, /* bitpos */ | |
816 | complain_overflow_dont, /* complain_on_overflow */ | |
817 | bfd_elf_generic_reloc, /* special_function */ | |
818 | AARCH64_R_STR (MOVW_PREL_G3), /* name */ | |
819 | FALSE, /* partial_inplace */ | |
820 | 0xffff, /* src_mask */ | |
821 | 0xffff, /* dst_mask */ | |
822 | TRUE), /* pcrel_offset */ | |
823 | ||
a06ea964 NC |
824 | /* Relocations to generate 19, 21 and 33 bit PC-relative load/store |
825 | addresses: PG(x) is (x & ~0xfff). */ | |
826 | ||
827 | /* LD-lit: ((S+A-P) >> 2) & 0x7ffff */ | |
a6bb11b2 | 828 | HOWTO (AARCH64_R (LD_PREL_LO19), /* type */ |
a06ea964 NC |
829 | 2, /* rightshift */ |
830 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
831 | 19, /* bitsize */ | |
832 | TRUE, /* pc_relative */ | |
833 | 0, /* bitpos */ | |
834 | complain_overflow_signed, /* complain_on_overflow */ | |
835 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 836 | AARCH64_R_STR (LD_PREL_LO19), /* name */ |
a06ea964 NC |
837 | FALSE, /* partial_inplace */ |
838 | 0x7ffff, /* src_mask */ | |
839 | 0x7ffff, /* dst_mask */ | |
840 | TRUE), /* pcrel_offset */ | |
841 | ||
842 | /* ADR: (S+A-P) & 0x1fffff */ | |
a6bb11b2 | 843 | HOWTO (AARCH64_R (ADR_PREL_LO21), /* type */ |
a06ea964 NC |
844 | 0, /* rightshift */ |
845 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
846 | 21, /* bitsize */ | |
847 | TRUE, /* pc_relative */ | |
848 | 0, /* bitpos */ | |
849 | complain_overflow_signed, /* complain_on_overflow */ | |
850 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 851 | AARCH64_R_STR (ADR_PREL_LO21), /* name */ |
a06ea964 NC |
852 | FALSE, /* partial_inplace */ |
853 | 0x1fffff, /* src_mask */ | |
854 | 0x1fffff, /* dst_mask */ | |
855 | TRUE), /* pcrel_offset */ | |
856 | ||
857 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
a6bb11b2 | 858 | HOWTO (AARCH64_R (ADR_PREL_PG_HI21), /* type */ |
a06ea964 NC |
859 | 12, /* rightshift */ |
860 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
861 | 21, /* bitsize */ | |
862 | TRUE, /* pc_relative */ | |
863 | 0, /* bitpos */ | |
864 | complain_overflow_signed, /* complain_on_overflow */ | |
865 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 866 | AARCH64_R_STR (ADR_PREL_PG_HI21), /* name */ |
a06ea964 NC |
867 | FALSE, /* partial_inplace */ |
868 | 0x1fffff, /* src_mask */ | |
869 | 0x1fffff, /* dst_mask */ | |
870 | TRUE), /* pcrel_offset */ | |
871 | ||
872 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff [no overflow check] */ | |
a6bb11b2 | 873 | HOWTO64 (AARCH64_R (ADR_PREL_PG_HI21_NC), /* type */ |
a06ea964 NC |
874 | 12, /* rightshift */ |
875 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
876 | 21, /* bitsize */ | |
877 | TRUE, /* pc_relative */ | |
878 | 0, /* bitpos */ | |
879 | complain_overflow_dont, /* complain_on_overflow */ | |
880 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 881 | AARCH64_R_STR (ADR_PREL_PG_HI21_NC), /* name */ |
a06ea964 NC |
882 | FALSE, /* partial_inplace */ |
883 | 0x1fffff, /* src_mask */ | |
884 | 0x1fffff, /* dst_mask */ | |
885 | TRUE), /* pcrel_offset */ | |
886 | ||
887 | /* ADD: (S+A) & 0xfff [no overflow check] */ | |
a6bb11b2 | 888 | HOWTO (AARCH64_R (ADD_ABS_LO12_NC), /* type */ |
a06ea964 NC |
889 | 0, /* rightshift */ |
890 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
891 | 12, /* bitsize */ | |
892 | FALSE, /* pc_relative */ | |
893 | 10, /* bitpos */ | |
894 | complain_overflow_dont, /* complain_on_overflow */ | |
895 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 896 | AARCH64_R_STR (ADD_ABS_LO12_NC), /* name */ |
a06ea964 NC |
897 | FALSE, /* partial_inplace */ |
898 | 0x3ffc00, /* src_mask */ | |
899 | 0x3ffc00, /* dst_mask */ | |
900 | FALSE), /* pcrel_offset */ | |
901 | ||
902 | /* LD/ST8: (S+A) & 0xfff */ | |
a6bb11b2 | 903 | HOWTO (AARCH64_R (LDST8_ABS_LO12_NC), /* type */ |
a06ea964 NC |
904 | 0, /* rightshift */ |
905 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
906 | 12, /* bitsize */ | |
907 | FALSE, /* pc_relative */ | |
908 | 0, /* bitpos */ | |
909 | complain_overflow_dont, /* complain_on_overflow */ | |
910 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 911 | AARCH64_R_STR (LDST8_ABS_LO12_NC), /* name */ |
a06ea964 NC |
912 | FALSE, /* partial_inplace */ |
913 | 0xfff, /* src_mask */ | |
914 | 0xfff, /* dst_mask */ | |
915 | FALSE), /* pcrel_offset */ | |
916 | ||
917 | /* Relocations for control-flow instructions. */ | |
918 | ||
919 | /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */ | |
a6bb11b2 | 920 | HOWTO (AARCH64_R (TSTBR14), /* type */ |
a06ea964 NC |
921 | 2, /* rightshift */ |
922 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
923 | 14, /* bitsize */ | |
924 | TRUE, /* pc_relative */ | |
925 | 0, /* bitpos */ | |
926 | complain_overflow_signed, /* complain_on_overflow */ | |
927 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 928 | AARCH64_R_STR (TSTBR14), /* name */ |
a06ea964 NC |
929 | FALSE, /* partial_inplace */ |
930 | 0x3fff, /* src_mask */ | |
931 | 0x3fff, /* dst_mask */ | |
932 | TRUE), /* pcrel_offset */ | |
933 | ||
934 | /* B.cond: ((S+A-P) >> 2) & 0x7ffff */ | |
a6bb11b2 | 935 | HOWTO (AARCH64_R (CONDBR19), /* type */ |
a06ea964 NC |
936 | 2, /* rightshift */ |
937 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
938 | 19, /* bitsize */ | |
939 | TRUE, /* pc_relative */ | |
940 | 0, /* bitpos */ | |
941 | complain_overflow_signed, /* complain_on_overflow */ | |
942 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 943 | AARCH64_R_STR (CONDBR19), /* name */ |
a06ea964 NC |
944 | FALSE, /* partial_inplace */ |
945 | 0x7ffff, /* src_mask */ | |
946 | 0x7ffff, /* dst_mask */ | |
947 | TRUE), /* pcrel_offset */ | |
948 | ||
a06ea964 | 949 | /* B: ((S+A-P) >> 2) & 0x3ffffff */ |
a6bb11b2 | 950 | HOWTO (AARCH64_R (JUMP26), /* type */ |
a06ea964 NC |
951 | 2, /* rightshift */ |
952 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
953 | 26, /* bitsize */ | |
954 | TRUE, /* pc_relative */ | |
955 | 0, /* bitpos */ | |
956 | complain_overflow_signed, /* complain_on_overflow */ | |
957 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 958 | AARCH64_R_STR (JUMP26), /* name */ |
a06ea964 NC |
959 | FALSE, /* partial_inplace */ |
960 | 0x3ffffff, /* src_mask */ | |
961 | 0x3ffffff, /* dst_mask */ | |
962 | TRUE), /* pcrel_offset */ | |
963 | ||
964 | /* BL: ((S+A-P) >> 2) & 0x3ffffff */ | |
a6bb11b2 | 965 | HOWTO (AARCH64_R (CALL26), /* type */ |
a06ea964 NC |
966 | 2, /* rightshift */ |
967 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
968 | 26, /* bitsize */ | |
969 | TRUE, /* pc_relative */ | |
970 | 0, /* bitpos */ | |
971 | complain_overflow_signed, /* complain_on_overflow */ | |
972 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 973 | AARCH64_R_STR (CALL26), /* name */ |
a06ea964 NC |
974 | FALSE, /* partial_inplace */ |
975 | 0x3ffffff, /* src_mask */ | |
976 | 0x3ffffff, /* dst_mask */ | |
977 | TRUE), /* pcrel_offset */ | |
978 | ||
979 | /* LD/ST16: (S+A) & 0xffe */ | |
a6bb11b2 | 980 | HOWTO (AARCH64_R (LDST16_ABS_LO12_NC), /* type */ |
a06ea964 NC |
981 | 1, /* rightshift */ |
982 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
983 | 12, /* bitsize */ | |
984 | FALSE, /* pc_relative */ | |
985 | 0, /* bitpos */ | |
986 | complain_overflow_dont, /* complain_on_overflow */ | |
987 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 988 | AARCH64_R_STR (LDST16_ABS_LO12_NC), /* name */ |
a06ea964 NC |
989 | FALSE, /* partial_inplace */ |
990 | 0xffe, /* src_mask */ | |
991 | 0xffe, /* dst_mask */ | |
992 | FALSE), /* pcrel_offset */ | |
993 | ||
994 | /* LD/ST32: (S+A) & 0xffc */ | |
a6bb11b2 | 995 | HOWTO (AARCH64_R (LDST32_ABS_LO12_NC), /* type */ |
a06ea964 NC |
996 | 2, /* rightshift */ |
997 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
998 | 12, /* bitsize */ | |
999 | FALSE, /* pc_relative */ | |
1000 | 0, /* bitpos */ | |
1001 | complain_overflow_dont, /* complain_on_overflow */ | |
1002 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1003 | AARCH64_R_STR (LDST32_ABS_LO12_NC), /* name */ |
a06ea964 NC |
1004 | FALSE, /* partial_inplace */ |
1005 | 0xffc, /* src_mask */ | |
1006 | 0xffc, /* dst_mask */ | |
1007 | FALSE), /* pcrel_offset */ | |
1008 | ||
1009 | /* LD/ST64: (S+A) & 0xff8 */ | |
a6bb11b2 | 1010 | HOWTO (AARCH64_R (LDST64_ABS_LO12_NC), /* type */ |
a06ea964 NC |
1011 | 3, /* rightshift */ |
1012 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1013 | 12, /* bitsize */ | |
1014 | FALSE, /* pc_relative */ | |
1015 | 0, /* bitpos */ | |
1016 | complain_overflow_dont, /* complain_on_overflow */ | |
1017 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1018 | AARCH64_R_STR (LDST64_ABS_LO12_NC), /* name */ |
a06ea964 NC |
1019 | FALSE, /* partial_inplace */ |
1020 | 0xff8, /* src_mask */ | |
1021 | 0xff8, /* dst_mask */ | |
1022 | FALSE), /* pcrel_offset */ | |
1023 | ||
a06ea964 | 1024 | /* LD/ST128: (S+A) & 0xff0 */ |
a6bb11b2 | 1025 | HOWTO (AARCH64_R (LDST128_ABS_LO12_NC), /* type */ |
a06ea964 NC |
1026 | 4, /* rightshift */ |
1027 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1028 | 12, /* bitsize */ | |
1029 | FALSE, /* pc_relative */ | |
1030 | 0, /* bitpos */ | |
1031 | complain_overflow_dont, /* complain_on_overflow */ | |
1032 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1033 | AARCH64_R_STR (LDST128_ABS_LO12_NC), /* name */ |
a06ea964 NC |
1034 | FALSE, /* partial_inplace */ |
1035 | 0xff0, /* src_mask */ | |
1036 | 0xff0, /* dst_mask */ | |
1037 | FALSE), /* pcrel_offset */ | |
1038 | ||
f41aef5f RE |
1039 | /* Set a load-literal immediate field to bits |
1040 | 0x1FFFFC of G(S)-P */ | |
a6bb11b2 | 1041 | HOWTO (AARCH64_R (GOT_LD_PREL19), /* type */ |
f41aef5f RE |
1042 | 2, /* rightshift */ |
1043 | 2, /* size (0 = byte,1 = short,2 = long) */ | |
1044 | 19, /* bitsize */ | |
1045 | TRUE, /* pc_relative */ | |
1046 | 0, /* bitpos */ | |
1047 | complain_overflow_signed, /* complain_on_overflow */ | |
1048 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1049 | AARCH64_R_STR (GOT_LD_PREL19), /* name */ |
f41aef5f RE |
1050 | FALSE, /* partial_inplace */ |
1051 | 0xffffe0, /* src_mask */ | |
1052 | 0xffffe0, /* dst_mask */ | |
1053 | TRUE), /* pcrel_offset */ | |
1054 | ||
a06ea964 NC |
1055 | /* Get to the page for the GOT entry for the symbol |
1056 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 1057 | HOWTO (AARCH64_R (ADR_GOT_PAGE), /* type */ |
a06ea964 NC |
1058 | 12, /* rightshift */ |
1059 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1060 | 21, /* bitsize */ | |
1061 | TRUE, /* pc_relative */ | |
1062 | 0, /* bitpos */ | |
1063 | complain_overflow_dont, /* complain_on_overflow */ | |
1064 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1065 | AARCH64_R_STR (ADR_GOT_PAGE), /* name */ |
a06ea964 NC |
1066 | FALSE, /* partial_inplace */ |
1067 | 0x1fffff, /* src_mask */ | |
1068 | 0x1fffff, /* dst_mask */ | |
1069 | TRUE), /* pcrel_offset */ | |
1070 | ||
a6bb11b2 YZ |
1071 | /* LD64: GOT offset G(S) & 0xff8 */ |
1072 | HOWTO64 (AARCH64_R (LD64_GOT_LO12_NC), /* type */ | |
a06ea964 NC |
1073 | 3, /* rightshift */ |
1074 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1075 | 12, /* bitsize */ | |
1076 | FALSE, /* pc_relative */ | |
1077 | 0, /* bitpos */ | |
1078 | complain_overflow_dont, /* complain_on_overflow */ | |
1079 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1080 | AARCH64_R_STR (LD64_GOT_LO12_NC), /* name */ |
a06ea964 NC |
1081 | FALSE, /* partial_inplace */ |
1082 | 0xff8, /* src_mask */ | |
1083 | 0xff8, /* dst_mask */ | |
a6bb11b2 | 1084 | FALSE), /* pcrel_offset */ |
a06ea964 | 1085 | |
a6bb11b2 YZ |
1086 | /* LD32: GOT offset G(S) & 0xffc */ |
1087 | HOWTO32 (AARCH64_R (LD32_GOT_LO12_NC), /* type */ | |
1088 | 2, /* rightshift */ | |
1089 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1090 | 12, /* bitsize */ | |
1091 | FALSE, /* pc_relative */ | |
1092 | 0, /* bitpos */ | |
1093 | complain_overflow_dont, /* complain_on_overflow */ | |
1094 | bfd_elf_generic_reloc, /* special_function */ | |
1095 | AARCH64_R_STR (LD32_GOT_LO12_NC), /* name */ | |
1096 | FALSE, /* partial_inplace */ | |
1097 | 0xffc, /* src_mask */ | |
1098 | 0xffc, /* dst_mask */ | |
1099 | FALSE), /* pcrel_offset */ | |
a06ea964 | 1100 | |
ca632371 RL |
1101 | /* Lower 16 bits of GOT offset for the symbol. */ |
1102 | HOWTO64 (AARCH64_R (MOVW_GOTOFF_G0_NC), /* type */ | |
1103 | 0, /* rightshift */ | |
1104 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1105 | 16, /* bitsize */ | |
1106 | FALSE, /* pc_relative */ | |
1107 | 0, /* bitpos */ | |
1108 | complain_overflow_dont, /* complain_on_overflow */ | |
1109 | bfd_elf_generic_reloc, /* special_function */ | |
1110 | AARCH64_R_STR (MOVW_GOTOFF_G0_NC), /* name */ | |
1111 | FALSE, /* partial_inplace */ | |
1112 | 0xffff, /* src_mask */ | |
1113 | 0xffff, /* dst_mask */ | |
1114 | FALSE), /* pcrel_offset */ | |
1115 | ||
654248e7 RL |
1116 | /* Higher 16 bits of GOT offset for the symbol. */ |
1117 | HOWTO64 (AARCH64_R (MOVW_GOTOFF_G1), /* type */ | |
1118 | 16, /* rightshift */ | |
1119 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1120 | 16, /* bitsize */ | |
1121 | FALSE, /* pc_relative */ | |
1122 | 0, /* bitpos */ | |
1123 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1124 | bfd_elf_generic_reloc, /* special_function */ | |
1125 | AARCH64_R_STR (MOVW_GOTOFF_G1), /* name */ | |
1126 | FALSE, /* partial_inplace */ | |
1127 | 0xffff, /* src_mask */ | |
1128 | 0xffff, /* dst_mask */ | |
1129 | FALSE), /* pcrel_offset */ | |
1130 | ||
87f5fbcc RL |
1131 | /* LD64: GOT offset for the symbol. */ |
1132 | HOWTO64 (AARCH64_R (LD64_GOTOFF_LO15), /* type */ | |
1133 | 3, /* rightshift */ | |
1134 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1135 | 12, /* bitsize */ | |
1136 | FALSE, /* pc_relative */ | |
1137 | 0, /* bitpos */ | |
1138 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1139 | bfd_elf_generic_reloc, /* special_function */ | |
1140 | AARCH64_R_STR (LD64_GOTOFF_LO15), /* name */ | |
1141 | FALSE, /* partial_inplace */ | |
1142 | 0x7ff8, /* src_mask */ | |
1143 | 0x7ff8, /* dst_mask */ | |
1144 | FALSE), /* pcrel_offset */ | |
1145 | ||
3d715ce4 JW |
1146 | /* LD32: GOT offset to the page address of GOT table. |
1147 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x5ffc. */ | |
1148 | HOWTO32 (AARCH64_R (LD32_GOTPAGE_LO14), /* type */ | |
1149 | 2, /* rightshift */ | |
1150 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1151 | 12, /* bitsize */ | |
1152 | FALSE, /* pc_relative */ | |
1153 | 0, /* bitpos */ | |
1154 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1155 | bfd_elf_generic_reloc, /* special_function */ | |
1156 | AARCH64_R_STR (LD32_GOTPAGE_LO14), /* name */ | |
1157 | FALSE, /* partial_inplace */ | |
1158 | 0x5ffc, /* src_mask */ | |
1159 | 0x5ffc, /* dst_mask */ | |
1160 | FALSE), /* pcrel_offset */ | |
1161 | ||
a921b5bd JW |
1162 | /* LD64: GOT offset to the page address of GOT table. |
1163 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */ | |
1164 | HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15), /* type */ | |
1165 | 3, /* rightshift */ | |
1166 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1167 | 12, /* bitsize */ | |
1168 | FALSE, /* pc_relative */ | |
1169 | 0, /* bitpos */ | |
1170 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1171 | bfd_elf_generic_reloc, /* special_function */ | |
1172 | AARCH64_R_STR (LD64_GOTPAGE_LO15), /* name */ | |
1173 | FALSE, /* partial_inplace */ | |
1174 | 0x7ff8, /* src_mask */ | |
1175 | 0x7ff8, /* dst_mask */ | |
1176 | FALSE), /* pcrel_offset */ | |
1177 | ||
a06ea964 NC |
1178 | /* Get to the page for the GOT entry for the symbol |
1179 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 1180 | HOWTO (AARCH64_R (TLSGD_ADR_PAGE21), /* type */ |
a06ea964 NC |
1181 | 12, /* rightshift */ |
1182 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1183 | 21, /* bitsize */ | |
1184 | TRUE, /* pc_relative */ | |
1185 | 0, /* bitpos */ | |
1186 | complain_overflow_dont, /* complain_on_overflow */ | |
1187 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1188 | AARCH64_R_STR (TLSGD_ADR_PAGE21), /* name */ |
a06ea964 NC |
1189 | FALSE, /* partial_inplace */ |
1190 | 0x1fffff, /* src_mask */ | |
1191 | 0x1fffff, /* dst_mask */ | |
1192 | TRUE), /* pcrel_offset */ | |
1193 | ||
3c12b054 MS |
1194 | HOWTO (AARCH64_R (TLSGD_ADR_PREL21), /* type */ |
1195 | 0, /* rightshift */ | |
1196 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1197 | 21, /* bitsize */ | |
1198 | TRUE, /* pc_relative */ | |
1199 | 0, /* bitpos */ | |
1200 | complain_overflow_dont, /* complain_on_overflow */ | |
1201 | bfd_elf_generic_reloc, /* special_function */ | |
1202 | AARCH64_R_STR (TLSGD_ADR_PREL21), /* name */ | |
1203 | FALSE, /* partial_inplace */ | |
1204 | 0x1fffff, /* src_mask */ | |
1205 | 0x1fffff, /* dst_mask */ | |
1206 | TRUE), /* pcrel_offset */ | |
1207 | ||
a06ea964 | 1208 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ |
a6bb11b2 | 1209 | HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC), /* type */ |
a06ea964 NC |
1210 | 0, /* rightshift */ |
1211 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1212 | 12, /* bitsize */ | |
1213 | FALSE, /* pc_relative */ | |
1214 | 0, /* bitpos */ | |
1215 | complain_overflow_dont, /* complain_on_overflow */ | |
1216 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1217 | AARCH64_R_STR (TLSGD_ADD_LO12_NC), /* name */ |
a06ea964 NC |
1218 | FALSE, /* partial_inplace */ |
1219 | 0xfff, /* src_mask */ | |
1220 | 0xfff, /* dst_mask */ | |
1221 | FALSE), /* pcrel_offset */ | |
1222 | ||
3e8286c0 RL |
1223 | /* Lower 16 bits of GOT offset to tls_index. */ |
1224 | HOWTO64 (AARCH64_R (TLSGD_MOVW_G0_NC), /* type */ | |
1225 | 0, /* rightshift */ | |
1226 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1227 | 16, /* bitsize */ | |
1228 | FALSE, /* pc_relative */ | |
1229 | 0, /* bitpos */ | |
1230 | complain_overflow_dont, /* complain_on_overflow */ | |
1231 | bfd_elf_generic_reloc, /* special_function */ | |
1232 | AARCH64_R_STR (TLSGD_MOVW_G0_NC), /* name */ | |
1233 | FALSE, /* partial_inplace */ | |
1234 | 0xffff, /* src_mask */ | |
1235 | 0xffff, /* dst_mask */ | |
1236 | FALSE), /* pcrel_offset */ | |
1237 | ||
1aa66fb1 RL |
1238 | /* Higher 16 bits of GOT offset to tls_index. */ |
1239 | HOWTO64 (AARCH64_R (TLSGD_MOVW_G1), /* type */ | |
1240 | 16, /* rightshift */ | |
1241 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1242 | 16, /* bitsize */ | |
1243 | FALSE, /* pc_relative */ | |
1244 | 0, /* bitpos */ | |
1245 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1246 | bfd_elf_generic_reloc, /* special_function */ | |
1247 | AARCH64_R_STR (TLSGD_MOVW_G1), /* name */ | |
1248 | FALSE, /* partial_inplace */ | |
1249 | 0xffff, /* src_mask */ | |
1250 | 0xffff, /* dst_mask */ | |
1251 | FALSE), /* pcrel_offset */ | |
1252 | ||
a6bb11b2 | 1253 | HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21), /* type */ |
a06ea964 NC |
1254 | 12, /* rightshift */ |
1255 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1256 | 21, /* bitsize */ | |
1257 | FALSE, /* pc_relative */ | |
1258 | 0, /* bitpos */ | |
1259 | complain_overflow_dont, /* complain_on_overflow */ | |
1260 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1261 | AARCH64_R_STR (TLSIE_ADR_GOTTPREL_PAGE21), /* name */ |
a06ea964 NC |
1262 | FALSE, /* partial_inplace */ |
1263 | 0x1fffff, /* src_mask */ | |
1264 | 0x1fffff, /* dst_mask */ | |
1265 | FALSE), /* pcrel_offset */ | |
1266 | ||
a6bb11b2 | 1267 | HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC), /* type */ |
a06ea964 NC |
1268 | 3, /* rightshift */ |
1269 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1270 | 12, /* bitsize */ | |
1271 | FALSE, /* pc_relative */ | |
1272 | 0, /* bitpos */ | |
1273 | complain_overflow_dont, /* complain_on_overflow */ | |
1274 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1275 | AARCH64_R_STR (TLSIE_LD64_GOTTPREL_LO12_NC), /* name */ |
a06ea964 NC |
1276 | FALSE, /* partial_inplace */ |
1277 | 0xff8, /* src_mask */ | |
1278 | 0xff8, /* dst_mask */ | |
1279 | FALSE), /* pcrel_offset */ | |
1280 | ||
a6bb11b2 YZ |
1281 | HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC), /* type */ |
1282 | 2, /* rightshift */ | |
1283 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1284 | 12, /* bitsize */ | |
1285 | FALSE, /* pc_relative */ | |
1286 | 0, /* bitpos */ | |
1287 | complain_overflow_dont, /* complain_on_overflow */ | |
1288 | bfd_elf_generic_reloc, /* special_function */ | |
1289 | AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC), /* name */ | |
1290 | FALSE, /* partial_inplace */ | |
1291 | 0xffc, /* src_mask */ | |
1292 | 0xffc, /* dst_mask */ | |
1293 | FALSE), /* pcrel_offset */ | |
1294 | ||
1295 | HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19), /* type */ | |
bb3f9ed8 | 1296 | 2, /* rightshift */ |
a06ea964 | 1297 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
043bf05a | 1298 | 19, /* bitsize */ |
a06ea964 NC |
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_LD_GOTTPREL_PREL19), /* name */ |
a06ea964 NC |
1304 | FALSE, /* partial_inplace */ |
1305 | 0x1ffffc, /* src_mask */ | |
1306 | 0x1ffffc, /* dst_mask */ | |
1307 | FALSE), /* pcrel_offset */ | |
1308 | ||
3b957e5b RL |
1309 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */ |
1310 | 0, /* rightshift */ | |
1311 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1312 | 16, /* bitsize */ | |
1313 | FALSE, /* pc_relative */ | |
1314 | 0, /* bitpos */ | |
1315 | complain_overflow_dont, /* complain_on_overflow */ | |
1316 | bfd_elf_generic_reloc, /* special_function */ | |
1317 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC), /* name */ | |
1318 | FALSE, /* partial_inplace */ | |
1319 | 0xffff, /* src_mask */ | |
1320 | 0xffff, /* dst_mask */ | |
1321 | FALSE), /* pcrel_offset */ | |
1322 | ||
1323 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1), /* type */ | |
1324 | 16, /* rightshift */ | |
1325 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1326 | 16, /* bitsize */ | |
1327 | FALSE, /* pc_relative */ | |
1328 | 0, /* bitpos */ | |
1329 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1330 | bfd_elf_generic_reloc, /* special_function */ | |
1331 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1), /* name */ | |
1332 | FALSE, /* partial_inplace */ | |
1333 | 0xffff, /* src_mask */ | |
1334 | 0xffff, /* dst_mask */ | |
1335 | FALSE), /* pcrel_offset */ | |
1336 | ||
49df5539 JW |
1337 | /* ADD: bit[23:12] of byte offset to module TLS base address. */ |
1338 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_HI12), /* type */ | |
1339 | 12, /* rightshift */ | |
1340 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1341 | 12, /* bitsize */ | |
1342 | FALSE, /* pc_relative */ | |
1343 | 0, /* bitpos */ | |
1344 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1345 | bfd_elf_generic_reloc, /* special_function */ | |
1346 | AARCH64_R_STR (TLSLD_ADD_DTPREL_HI12), /* name */ | |
1347 | FALSE, /* partial_inplace */ | |
1348 | 0xfff, /* src_mask */ | |
1349 | 0xfff, /* dst_mask */ | |
1350 | FALSE), /* pcrel_offset */ | |
1351 | ||
70151fb5 JW |
1352 | /* Unsigned 12 bit byte offset to module TLS base address. */ |
1353 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12), /* type */ | |
1354 | 0, /* rightshift */ | |
1355 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1356 | 12, /* bitsize */ | |
1357 | FALSE, /* pc_relative */ | |
1358 | 0, /* bitpos */ | |
1359 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1360 | bfd_elf_generic_reloc, /* special_function */ | |
1361 | AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12), /* name */ | |
1362 | FALSE, /* partial_inplace */ | |
1363 | 0xfff, /* src_mask */ | |
1364 | 0xfff, /* dst_mask */ | |
1365 | FALSE), /* pcrel_offset */ | |
13289c10 JW |
1366 | |
1367 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12. */ | |
1368 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12_NC), /* type */ | |
1369 | 0, /* rightshift */ | |
1370 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1371 | 12, /* bitsize */ | |
1372 | FALSE, /* pc_relative */ | |
1373 | 0, /* bitpos */ | |
1374 | complain_overflow_dont, /* complain_on_overflow */ | |
1375 | bfd_elf_generic_reloc, /* special_function */ | |
1376 | AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12_NC), /* name */ | |
1377 | FALSE, /* partial_inplace */ | |
1378 | 0xfff, /* src_mask */ | |
1379 | 0xfff, /* dst_mask */ | |
1380 | FALSE), /* pcrel_offset */ | |
70151fb5 | 1381 | |
a12fad50 JW |
1382 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ |
1383 | HOWTO (AARCH64_R (TLSLD_ADD_LO12_NC), /* type */ | |
1384 | 0, /* rightshift */ | |
1385 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1386 | 12, /* bitsize */ | |
1387 | FALSE, /* pc_relative */ | |
1388 | 0, /* bitpos */ | |
1389 | complain_overflow_dont, /* complain_on_overflow */ | |
1390 | bfd_elf_generic_reloc, /* special_function */ | |
1391 | AARCH64_R_STR (TLSLD_ADD_LO12_NC), /* name */ | |
1392 | FALSE, /* partial_inplace */ | |
1393 | 0xfff, /* src_mask */ | |
1394 | 0xfff, /* dst_mask */ | |
1395 | FALSE), /* pcrel_offset */ | |
1396 | ||
1107e076 JW |
1397 | /* Get to the page for the GOT entry for the symbol |
1398 | (G(S) - P) using an ADRP instruction. */ | |
1399 | HOWTO (AARCH64_R (TLSLD_ADR_PAGE21), /* type */ | |
1400 | 12, /* rightshift */ | |
1401 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1402 | 21, /* bitsize */ | |
1403 | TRUE, /* pc_relative */ | |
1404 | 0, /* bitpos */ | |
1405 | complain_overflow_signed, /* complain_on_overflow */ | |
1406 | bfd_elf_generic_reloc, /* special_function */ | |
1407 | AARCH64_R_STR (TLSLD_ADR_PAGE21), /* name */ | |
1408 | FALSE, /* partial_inplace */ | |
1409 | 0x1fffff, /* src_mask */ | |
1410 | 0x1fffff, /* dst_mask */ | |
1411 | TRUE), /* pcrel_offset */ | |
1412 | ||
6c37fedc JW |
1413 | HOWTO (AARCH64_R (TLSLD_ADR_PREL21), /* type */ |
1414 | 0, /* rightshift */ | |
1415 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1416 | 21, /* bitsize */ | |
1417 | TRUE, /* pc_relative */ | |
1418 | 0, /* bitpos */ | |
1419 | complain_overflow_signed, /* complain_on_overflow */ | |
1420 | bfd_elf_generic_reloc, /* special_function */ | |
1421 | AARCH64_R_STR (TLSLD_ADR_PREL21), /* name */ | |
1422 | FALSE, /* partial_inplace */ | |
1423 | 0x1fffff, /* src_mask */ | |
1424 | 0x1fffff, /* dst_mask */ | |
1425 | TRUE), /* pcrel_offset */ | |
1426 | ||
4c562523 JW |
1427 | /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */ |
1428 | HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12), /* type */ | |
1429 | 1, /* rightshift */ | |
1430 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1431 | 11, /* bitsize */ | |
1432 | FALSE, /* pc_relative */ | |
1433 | 10, /* bitpos */ | |
1434 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1435 | bfd_elf_generic_reloc, /* special_function */ | |
1436 | AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12), /* name */ | |
1437 | FALSE, /* partial_inplace */ | |
1438 | 0x1ffc00, /* src_mask */ | |
1439 | 0x1ffc00, /* dst_mask */ | |
1440 | FALSE), /* pcrel_offset */ | |
1441 | ||
1442 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12, but no overflow check. */ | |
1443 | HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12_NC), /* type */ | |
1444 | 1, /* rightshift */ | |
1445 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1446 | 11, /* bitsize */ | |
1447 | FALSE, /* pc_relative */ | |
1448 | 10, /* bitpos */ | |
1449 | complain_overflow_dont, /* complain_on_overflow */ | |
1450 | bfd_elf_generic_reloc, /* special_function */ | |
1451 | AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12_NC), /* name */ | |
1452 | FALSE, /* partial_inplace */ | |
1453 | 0x1ffc00, /* src_mask */ | |
1454 | 0x1ffc00, /* dst_mask */ | |
1455 | FALSE), /* pcrel_offset */ | |
1456 | ||
1457 | /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */ | |
1458 | HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12), /* type */ | |
1459 | 2, /* rightshift */ | |
1460 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1461 | 10, /* bitsize */ | |
1462 | FALSE, /* pc_relative */ | |
1463 | 10, /* bitpos */ | |
1464 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1465 | bfd_elf_generic_reloc, /* special_function */ | |
1466 | AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12), /* name */ | |
1467 | FALSE, /* partial_inplace */ | |
1468 | 0x3ffc00, /* src_mask */ | |
1469 | 0x3ffc00, /* dst_mask */ | |
1470 | FALSE), /* pcrel_offset */ | |
1471 | ||
1472 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12, but no overflow check. */ | |
1473 | HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12_NC), /* type */ | |
1474 | 2, /* rightshift */ | |
1475 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1476 | 10, /* bitsize */ | |
1477 | FALSE, /* pc_relative */ | |
1478 | 10, /* bitpos */ | |
1479 | complain_overflow_dont, /* complain_on_overflow */ | |
1480 | bfd_elf_generic_reloc, /* special_function */ | |
1481 | AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12_NC), /* name */ | |
1482 | FALSE, /* partial_inplace */ | |
1483 | 0xffc00, /* src_mask */ | |
1484 | 0xffc00, /* dst_mask */ | |
1485 | FALSE), /* pcrel_offset */ | |
1486 | ||
1487 | /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */ | |
1488 | HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12), /* type */ | |
1489 | 3, /* rightshift */ | |
1490 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1491 | 9, /* bitsize */ | |
1492 | FALSE, /* pc_relative */ | |
1493 | 10, /* bitpos */ | |
1494 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1495 | bfd_elf_generic_reloc, /* special_function */ | |
1496 | AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12), /* name */ | |
1497 | FALSE, /* partial_inplace */ | |
1498 | 0x3ffc00, /* src_mask */ | |
1499 | 0x3ffc00, /* dst_mask */ | |
1500 | FALSE), /* pcrel_offset */ | |
1501 | ||
1502 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12, but no overflow check. */ | |
1503 | HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12_NC), /* type */ | |
1504 | 3, /* rightshift */ | |
1505 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1506 | 9, /* bitsize */ | |
1507 | FALSE, /* pc_relative */ | |
1508 | 10, /* bitpos */ | |
1509 | complain_overflow_dont, /* complain_on_overflow */ | |
1510 | bfd_elf_generic_reloc, /* special_function */ | |
1511 | AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12_NC), /* name */ | |
1512 | FALSE, /* partial_inplace */ | |
1513 | 0x7fc00, /* src_mask */ | |
1514 | 0x7fc00, /* dst_mask */ | |
1515 | FALSE), /* pcrel_offset */ | |
1516 | ||
1517 | /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */ | |
1518 | HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12), /* type */ | |
1519 | 0, /* rightshift */ | |
1520 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1521 | 12, /* bitsize */ | |
1522 | FALSE, /* pc_relative */ | |
1523 | 10, /* bitpos */ | |
1524 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1525 | bfd_elf_generic_reloc, /* special_function */ | |
1526 | AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12), /* name */ | |
1527 | FALSE, /* partial_inplace */ | |
1528 | 0x3ffc00, /* src_mask */ | |
1529 | 0x3ffc00, /* dst_mask */ | |
1530 | FALSE), /* pcrel_offset */ | |
1531 | ||
1532 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12, but no overflow check. */ | |
1533 | HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12_NC), /* type */ | |
1534 | 0, /* rightshift */ | |
1535 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1536 | 12, /* bitsize */ | |
1537 | FALSE, /* pc_relative */ | |
1538 | 10, /* bitpos */ | |
1539 | complain_overflow_dont, /* complain_on_overflow */ | |
1540 | bfd_elf_generic_reloc, /* special_function */ | |
1541 | AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12_NC), /* name */ | |
1542 | FALSE, /* partial_inplace */ | |
1543 | 0x3ffc00, /* src_mask */ | |
1544 | 0x3ffc00, /* dst_mask */ | |
1545 | FALSE), /* pcrel_offset */ | |
1546 | ||
49df5539 JW |
1547 | /* MOVZ: bit[15:0] of byte offset to module TLS base address. */ |
1548 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0), /* type */ | |
1549 | 0, /* rightshift */ | |
1550 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1551 | 16, /* bitsize */ | |
1552 | FALSE, /* pc_relative */ | |
1553 | 0, /* bitpos */ | |
1554 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1555 | bfd_elf_generic_reloc, /* special_function */ | |
1556 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0), /* name */ | |
1557 | FALSE, /* partial_inplace */ | |
1558 | 0xffff, /* src_mask */ | |
1559 | 0xffff, /* dst_mask */ | |
1560 | FALSE), /* pcrel_offset */ | |
1561 | ||
1562 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0. */ | |
1563 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0_NC), /* type */ | |
1564 | 0, /* rightshift */ | |
1565 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1566 | 16, /* bitsize */ | |
1567 | FALSE, /* pc_relative */ | |
1568 | 0, /* bitpos */ | |
1569 | complain_overflow_dont, /* complain_on_overflow */ | |
1570 | bfd_elf_generic_reloc, /* special_function */ | |
1571 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0_NC), /* name */ | |
1572 | FALSE, /* partial_inplace */ | |
1573 | 0xffff, /* src_mask */ | |
1574 | 0xffff, /* dst_mask */ | |
1575 | FALSE), /* pcrel_offset */ | |
1576 | ||
1577 | /* MOVZ: bit[31:16] of byte offset to module TLS base address. */ | |
1578 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G1), /* type */ | |
1579 | 16, /* rightshift */ | |
1580 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1581 | 16, /* bitsize */ | |
1582 | FALSE, /* pc_relative */ | |
1583 | 0, /* bitpos */ | |
1584 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1585 | bfd_elf_generic_reloc, /* special_function */ | |
1586 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1), /* name */ | |
1587 | FALSE, /* partial_inplace */ | |
1588 | 0xffff, /* src_mask */ | |
1589 | 0xffff, /* dst_mask */ | |
1590 | FALSE), /* pcrel_offset */ | |
1591 | ||
1592 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1. */ | |
1593 | HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G1_NC), /* type */ | |
1594 | 16, /* rightshift */ | |
1595 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1596 | 16, /* bitsize */ | |
1597 | FALSE, /* pc_relative */ | |
1598 | 0, /* bitpos */ | |
1599 | complain_overflow_dont, /* complain_on_overflow */ | |
1600 | bfd_elf_generic_reloc, /* special_function */ | |
1601 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1_NC), /* name */ | |
1602 | FALSE, /* partial_inplace */ | |
1603 | 0xffff, /* src_mask */ | |
1604 | 0xffff, /* dst_mask */ | |
1605 | FALSE), /* pcrel_offset */ | |
1606 | ||
1607 | /* MOVZ: bit[47:32] of byte offset to module TLS base address. */ | |
1608 | HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G2), /* type */ | |
1609 | 32, /* rightshift */ | |
1610 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1611 | 16, /* bitsize */ | |
1612 | FALSE, /* pc_relative */ | |
1613 | 0, /* bitpos */ | |
1614 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1615 | bfd_elf_generic_reloc, /* special_function */ | |
1616 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G2), /* name */ | |
1617 | FALSE, /* partial_inplace */ | |
1618 | 0xffff, /* src_mask */ | |
1619 | 0xffff, /* dst_mask */ | |
1620 | FALSE), /* pcrel_offset */ | |
1621 | ||
a6bb11b2 | 1622 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2), /* type */ |
bb3f9ed8 | 1623 | 32, /* rightshift */ |
a06ea964 | 1624 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1625 | 16, /* bitsize */ |
a06ea964 NC |
1626 | FALSE, /* pc_relative */ |
1627 | 0, /* bitpos */ | |
0172429c | 1628 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1629 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1630 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G2), /* name */ |
a06ea964 NC |
1631 | FALSE, /* partial_inplace */ |
1632 | 0xffff, /* src_mask */ | |
1633 | 0xffff, /* dst_mask */ | |
1634 | FALSE), /* pcrel_offset */ | |
1635 | ||
a6bb11b2 | 1636 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1), /* type */ |
bb3f9ed8 | 1637 | 16, /* rightshift */ |
a06ea964 | 1638 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1639 | 16, /* bitsize */ |
a06ea964 NC |
1640 | FALSE, /* pc_relative */ |
1641 | 0, /* bitpos */ | |
1642 | complain_overflow_dont, /* complain_on_overflow */ | |
1643 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1644 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1), /* name */ |
a06ea964 NC |
1645 | FALSE, /* partial_inplace */ |
1646 | 0xffff, /* src_mask */ | |
1647 | 0xffff, /* dst_mask */ | |
1648 | FALSE), /* pcrel_offset */ | |
1649 | ||
a6bb11b2 | 1650 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */ |
bb3f9ed8 | 1651 | 16, /* rightshift */ |
a06ea964 | 1652 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1653 | 16, /* bitsize */ |
a06ea964 NC |
1654 | FALSE, /* pc_relative */ |
1655 | 0, /* bitpos */ | |
1656 | complain_overflow_dont, /* complain_on_overflow */ | |
1657 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1658 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC), /* name */ |
a06ea964 NC |
1659 | FALSE, /* partial_inplace */ |
1660 | 0xffff, /* src_mask */ | |
1661 | 0xffff, /* dst_mask */ | |
1662 | FALSE), /* pcrel_offset */ | |
1663 | ||
a6bb11b2 | 1664 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0), /* type */ |
a06ea964 NC |
1665 | 0, /* rightshift */ |
1666 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
07875fbc | 1667 | 16, /* bitsize */ |
a06ea964 NC |
1668 | FALSE, /* pc_relative */ |
1669 | 0, /* bitpos */ | |
1670 | complain_overflow_dont, /* complain_on_overflow */ | |
1671 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1672 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0), /* 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_G0_NC), /* type */ |
a06ea964 NC |
1679 | 0, /* rightshift */ |
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_G0_NC), /* name */ |
a06ea964 NC |
1687 | FALSE, /* partial_inplace */ |
1688 | 0xffff, /* src_mask */ | |
1689 | 0xffff, /* dst_mask */ | |
1690 | FALSE), /* pcrel_offset */ | |
1691 | ||
a6bb11b2 | 1692 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12), /* type */ |
bb3f9ed8 | 1693 | 12, /* rightshift */ |
a06ea964 NC |
1694 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1695 | 12, /* bitsize */ | |
1696 | FALSE, /* pc_relative */ | |
1697 | 0, /* bitpos */ | |
bab91cce | 1698 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1699 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1700 | AARCH64_R_STR (TLSLE_ADD_TPREL_HI12), /* name */ |
a06ea964 NC |
1701 | FALSE, /* partial_inplace */ |
1702 | 0xfff, /* src_mask */ | |
1703 | 0xfff, /* dst_mask */ | |
1704 | FALSE), /* pcrel_offset */ | |
1705 | ||
a6bb11b2 | 1706 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12), /* type */ |
a06ea964 NC |
1707 | 0, /* rightshift */ |
1708 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1709 | 12, /* bitsize */ | |
1710 | FALSE, /* pc_relative */ | |
1711 | 0, /* bitpos */ | |
36e6c140 | 1712 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1713 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1714 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12), /* name */ |
a06ea964 NC |
1715 | FALSE, /* partial_inplace */ |
1716 | 0xfff, /* src_mask */ | |
1717 | 0xfff, /* dst_mask */ | |
1718 | FALSE), /* pcrel_offset */ | |
1719 | ||
a6bb11b2 | 1720 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC), /* type */ |
a06ea964 NC |
1721 | 0, /* rightshift */ |
1722 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1723 | 12, /* bitsize */ | |
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_ADD_TPREL_LO12_NC), /* name */ |
a06ea964 NC |
1729 | FALSE, /* partial_inplace */ |
1730 | 0xfff, /* src_mask */ | |
1731 | 0xfff, /* dst_mask */ | |
1732 | FALSE), /* pcrel_offset */ | |
a06ea964 | 1733 | |
84f1b9fb RL |
1734 | /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */ |
1735 | HOWTO (AARCH64_R (TLSLE_LDST16_TPREL_LO12), /* type */ | |
1736 | 1, /* rightshift */ | |
1737 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1738 | 11, /* bitsize */ | |
1739 | FALSE, /* pc_relative */ | |
1740 | 10, /* bitpos */ | |
1741 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1742 | bfd_elf_generic_reloc, /* special_function */ | |
1743 | AARCH64_R_STR (TLSLE_LDST16_TPREL_LO12), /* name */ | |
1744 | FALSE, /* partial_inplace */ | |
1745 | 0x1ffc00, /* src_mask */ | |
1746 | 0x1ffc00, /* dst_mask */ | |
1747 | FALSE), /* pcrel_offset */ | |
1748 | ||
1749 | /* Same as BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12, but no overflow check. */ | |
1750 | HOWTO (AARCH64_R (TLSLE_LDST16_TPREL_LO12_NC), /* type */ | |
1751 | 1, /* rightshift */ | |
1752 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1753 | 11, /* bitsize */ | |
1754 | FALSE, /* pc_relative */ | |
1755 | 10, /* bitpos */ | |
1756 | complain_overflow_dont, /* complain_on_overflow */ | |
1757 | bfd_elf_generic_reloc, /* special_function */ | |
1758 | AARCH64_R_STR (TLSLE_LDST16_TPREL_LO12_NC), /* name */ | |
1759 | FALSE, /* partial_inplace */ | |
1760 | 0x1ffc00, /* src_mask */ | |
1761 | 0x1ffc00, /* dst_mask */ | |
1762 | FALSE), /* pcrel_offset */ | |
1763 | ||
1764 | /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */ | |
1765 | HOWTO (AARCH64_R (TLSLE_LDST32_TPREL_LO12), /* type */ | |
1766 | 2, /* rightshift */ | |
1767 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1768 | 10, /* bitsize */ | |
1769 | FALSE, /* pc_relative */ | |
1770 | 10, /* bitpos */ | |
1771 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1772 | bfd_elf_generic_reloc, /* special_function */ | |
1773 | AARCH64_R_STR (TLSLE_LDST32_TPREL_LO12), /* name */ | |
1774 | FALSE, /* partial_inplace */ | |
1775 | 0xffc00, /* src_mask */ | |
1776 | 0xffc00, /* dst_mask */ | |
1777 | FALSE), /* pcrel_offset */ | |
1778 | ||
1779 | /* Same as BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12, but no overflow check. */ | |
1780 | HOWTO (AARCH64_R (TLSLE_LDST32_TPREL_LO12_NC), /* type */ | |
1781 | 2, /* rightshift */ | |
1782 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1783 | 10, /* bitsize */ | |
1784 | FALSE, /* pc_relative */ | |
1785 | 10, /* bitpos */ | |
1786 | complain_overflow_dont, /* complain_on_overflow */ | |
1787 | bfd_elf_generic_reloc, /* special_function */ | |
1788 | AARCH64_R_STR (TLSLE_LDST32_TPREL_LO12_NC), /* name */ | |
1789 | FALSE, /* partial_inplace */ | |
1790 | 0xffc00, /* src_mask */ | |
1791 | 0xffc00, /* dst_mask */ | |
1792 | FALSE), /* pcrel_offset */ | |
1793 | ||
1794 | /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */ | |
1795 | HOWTO (AARCH64_R (TLSLE_LDST64_TPREL_LO12), /* type */ | |
1796 | 3, /* rightshift */ | |
1797 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1798 | 9, /* bitsize */ | |
1799 | FALSE, /* pc_relative */ | |
1800 | 10, /* bitpos */ | |
1801 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1802 | bfd_elf_generic_reloc, /* special_function */ | |
1803 | AARCH64_R_STR (TLSLE_LDST64_TPREL_LO12), /* name */ | |
1804 | FALSE, /* partial_inplace */ | |
1805 | 0x7fc00, /* src_mask */ | |
1806 | 0x7fc00, /* dst_mask */ | |
1807 | FALSE), /* pcrel_offset */ | |
1808 | ||
1809 | /* Same as BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12, but no overflow check. */ | |
1810 | HOWTO (AARCH64_R (TLSLE_LDST64_TPREL_LO12_NC), /* type */ | |
1811 | 3, /* rightshift */ | |
1812 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1813 | 9, /* bitsize */ | |
1814 | FALSE, /* pc_relative */ | |
1815 | 10, /* bitpos */ | |
1816 | complain_overflow_dont, /* complain_on_overflow */ | |
1817 | bfd_elf_generic_reloc, /* special_function */ | |
1818 | AARCH64_R_STR (TLSLE_LDST64_TPREL_LO12_NC), /* name */ | |
1819 | FALSE, /* partial_inplace */ | |
1820 | 0x7fc00, /* src_mask */ | |
1821 | 0x7fc00, /* dst_mask */ | |
1822 | FALSE), /* pcrel_offset */ | |
1823 | ||
1824 | /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */ | |
1825 | HOWTO (AARCH64_R (TLSLE_LDST8_TPREL_LO12), /* type */ | |
1826 | 0, /* rightshift */ | |
1827 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1828 | 12, /* bitsize */ | |
1829 | FALSE, /* pc_relative */ | |
1830 | 10, /* bitpos */ | |
1831 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1832 | bfd_elf_generic_reloc, /* special_function */ | |
1833 | AARCH64_R_STR (TLSLE_LDST8_TPREL_LO12), /* name */ | |
1834 | FALSE, /* partial_inplace */ | |
1835 | 0x3ffc00, /* src_mask */ | |
1836 | 0x3ffc00, /* dst_mask */ | |
1837 | FALSE), /* pcrel_offset */ | |
1838 | ||
1839 | /* Same as BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12, but no overflow check. */ | |
1840 | HOWTO (AARCH64_R (TLSLE_LDST8_TPREL_LO12_NC), /* type */ | |
1841 | 0, /* rightshift */ | |
1842 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1843 | 12, /* bitsize */ | |
1844 | FALSE, /* pc_relative */ | |
1845 | 10, /* bitpos */ | |
1846 | complain_overflow_dont, /* complain_on_overflow */ | |
1847 | bfd_elf_generic_reloc, /* special_function */ | |
1848 | AARCH64_R_STR (TLSLE_LDST8_TPREL_LO12_NC), /* name */ | |
1849 | FALSE, /* partial_inplace */ | |
1850 | 0x3ffc00, /* src_mask */ | |
1851 | 0x3ffc00, /* dst_mask */ | |
1852 | FALSE), /* pcrel_offset */ | |
1853 | ||
a6bb11b2 | 1854 | HOWTO (AARCH64_R (TLSDESC_LD_PREL19), /* type */ |
bb3f9ed8 | 1855 | 2, /* rightshift */ |
a06ea964 | 1856 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1ada945d | 1857 | 19, /* bitsize */ |
a06ea964 NC |
1858 | TRUE, /* pc_relative */ |
1859 | 0, /* bitpos */ | |
1860 | complain_overflow_dont, /* complain_on_overflow */ | |
1861 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1862 | AARCH64_R_STR (TLSDESC_LD_PREL19), /* name */ |
a06ea964 | 1863 | FALSE, /* partial_inplace */ |
1ada945d MS |
1864 | 0x0ffffe0, /* src_mask */ |
1865 | 0x0ffffe0, /* dst_mask */ | |
a06ea964 NC |
1866 | TRUE), /* pcrel_offset */ |
1867 | ||
a6bb11b2 | 1868 | HOWTO (AARCH64_R (TLSDESC_ADR_PREL21), /* type */ |
a06ea964 NC |
1869 | 0, /* rightshift */ |
1870 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1871 | 21, /* bitsize */ | |
1872 | TRUE, /* pc_relative */ | |
1873 | 0, /* bitpos */ | |
1874 | complain_overflow_dont, /* complain_on_overflow */ | |
1875 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1876 | AARCH64_R_STR (TLSDESC_ADR_PREL21), /* name */ |
a06ea964 NC |
1877 | FALSE, /* partial_inplace */ |
1878 | 0x1fffff, /* src_mask */ | |
1879 | 0x1fffff, /* dst_mask */ | |
1880 | TRUE), /* pcrel_offset */ | |
1881 | ||
1882 | /* Get to the page for the GOT entry for the symbol | |
1883 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 1884 | HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21), /* type */ |
a06ea964 NC |
1885 | 12, /* rightshift */ |
1886 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1887 | 21, /* bitsize */ | |
1888 | TRUE, /* pc_relative */ | |
1889 | 0, /* bitpos */ | |
1890 | complain_overflow_dont, /* complain_on_overflow */ | |
1891 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1892 | AARCH64_R_STR (TLSDESC_ADR_PAGE21), /* name */ |
a06ea964 NC |
1893 | FALSE, /* partial_inplace */ |
1894 | 0x1fffff, /* src_mask */ | |
1895 | 0x1fffff, /* dst_mask */ | |
1896 | TRUE), /* pcrel_offset */ | |
1897 | ||
a6bb11b2 | 1898 | /* LD64: GOT offset G(S) & 0xff8. */ |
f955cccf | 1899 | HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12), /* type */ |
a06ea964 NC |
1900 | 3, /* rightshift */ |
1901 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1902 | 12, /* bitsize */ | |
1903 | FALSE, /* pc_relative */ | |
1904 | 0, /* bitpos */ | |
1905 | complain_overflow_dont, /* complain_on_overflow */ | |
1906 | bfd_elf_generic_reloc, /* special_function */ | |
f955cccf | 1907 | AARCH64_R_STR (TLSDESC_LD64_LO12), /* name */ |
a06ea964 | 1908 | FALSE, /* partial_inplace */ |
a6bb11b2 YZ |
1909 | 0xff8, /* src_mask */ |
1910 | 0xff8, /* dst_mask */ | |
1911 | FALSE), /* pcrel_offset */ | |
1912 | ||
1913 | /* LD32: GOT offset G(S) & 0xffc. */ | |
1914 | HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC), /* type */ | |
1915 | 2, /* rightshift */ | |
1916 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1917 | 12, /* bitsize */ | |
1918 | FALSE, /* pc_relative */ | |
1919 | 0, /* bitpos */ | |
1920 | complain_overflow_dont, /* complain_on_overflow */ | |
1921 | bfd_elf_generic_reloc, /* special_function */ | |
1922 | AARCH64_R_STR (TLSDESC_LD32_LO12_NC), /* name */ | |
1923 | FALSE, /* partial_inplace */ | |
1924 | 0xffc, /* src_mask */ | |
1925 | 0xffc, /* dst_mask */ | |
a06ea964 NC |
1926 | FALSE), /* pcrel_offset */ |
1927 | ||
1928 | /* ADD: GOT offset G(S) & 0xfff. */ | |
f955cccf | 1929 | HOWTO (AARCH64_R (TLSDESC_ADD_LO12), /* type */ |
a06ea964 NC |
1930 | 0, /* rightshift */ |
1931 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1932 | 12, /* bitsize */ | |
1933 | FALSE, /* pc_relative */ | |
1934 | 0, /* bitpos */ | |
f955cccf | 1935 | complain_overflow_dont,/* complain_on_overflow */ |
a06ea964 | 1936 | bfd_elf_generic_reloc, /* special_function */ |
f955cccf | 1937 | AARCH64_R_STR (TLSDESC_ADD_LO12), /* name */ |
a06ea964 NC |
1938 | FALSE, /* partial_inplace */ |
1939 | 0xfff, /* src_mask */ | |
1940 | 0xfff, /* dst_mask */ | |
1941 | FALSE), /* pcrel_offset */ | |
1942 | ||
a6bb11b2 | 1943 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G1), /* type */ |
bb3f9ed8 | 1944 | 16, /* rightshift */ |
a06ea964 NC |
1945 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1946 | 12, /* bitsize */ | |
1947 | FALSE, /* pc_relative */ | |
1948 | 0, /* bitpos */ | |
43a357f9 | 1949 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1950 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1951 | AARCH64_R_STR (TLSDESC_OFF_G1), /* name */ |
a06ea964 NC |
1952 | FALSE, /* partial_inplace */ |
1953 | 0xffff, /* src_mask */ | |
1954 | 0xffff, /* dst_mask */ | |
1955 | FALSE), /* pcrel_offset */ | |
1956 | ||
a6bb11b2 | 1957 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC), /* type */ |
a06ea964 NC |
1958 | 0, /* rightshift */ |
1959 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1960 | 12, /* bitsize */ | |
1961 | FALSE, /* pc_relative */ | |
1962 | 0, /* bitpos */ | |
1963 | complain_overflow_dont, /* complain_on_overflow */ | |
1964 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1965 | AARCH64_R_STR (TLSDESC_OFF_G0_NC), /* name */ |
a06ea964 NC |
1966 | FALSE, /* partial_inplace */ |
1967 | 0xffff, /* src_mask */ | |
1968 | 0xffff, /* dst_mask */ | |
1969 | FALSE), /* pcrel_offset */ | |
1970 | ||
a6bb11b2 | 1971 | HOWTO64 (AARCH64_R (TLSDESC_LDR), /* 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 */ | |
1977 | complain_overflow_dont, /* complain_on_overflow */ | |
1978 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1979 | AARCH64_R_STR (TLSDESC_LDR), /* name */ |
a06ea964 NC |
1980 | FALSE, /* partial_inplace */ |
1981 | 0x0, /* src_mask */ | |
1982 | 0x0, /* dst_mask */ | |
1983 | FALSE), /* pcrel_offset */ | |
1984 | ||
a6bb11b2 | 1985 | HOWTO64 (AARCH64_R (TLSDESC_ADD), /* type */ |
a06ea964 NC |
1986 | 0, /* rightshift */ |
1987 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1988 | 12, /* bitsize */ | |
1989 | FALSE, /* pc_relative */ | |
1990 | 0, /* bitpos */ | |
1991 | complain_overflow_dont, /* complain_on_overflow */ | |
1992 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1993 | AARCH64_R_STR (TLSDESC_ADD), /* name */ |
a06ea964 NC |
1994 | FALSE, /* partial_inplace */ |
1995 | 0x0, /* src_mask */ | |
1996 | 0x0, /* dst_mask */ | |
1997 | FALSE), /* pcrel_offset */ | |
1998 | ||
a6bb11b2 | 1999 | HOWTO (AARCH64_R (TLSDESC_CALL), /* type */ |
a06ea964 NC |
2000 | 0, /* rightshift */ |
2001 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
7366006f | 2002 | 0, /* bitsize */ |
a06ea964 NC |
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_CALL), /* name */ |
a06ea964 NC |
2008 | FALSE, /* partial_inplace */ |
2009 | 0x0, /* src_mask */ | |
2010 | 0x0, /* dst_mask */ | |
2011 | FALSE), /* pcrel_offset */ | |
a6bb11b2 YZ |
2012 | |
2013 | HOWTO (AARCH64_R (COPY), /* type */ | |
2014 | 0, /* rightshift */ | |
2015 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2016 | 64, /* bitsize */ | |
2017 | FALSE, /* pc_relative */ | |
2018 | 0, /* bitpos */ | |
2019 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2020 | bfd_elf_generic_reloc, /* special_function */ | |
2021 | AARCH64_R_STR (COPY), /* name */ | |
2022 | TRUE, /* partial_inplace */ | |
2023 | 0xffffffff, /* src_mask */ | |
2024 | 0xffffffff, /* dst_mask */ | |
2025 | FALSE), /* pcrel_offset */ | |
2026 | ||
2027 | HOWTO (AARCH64_R (GLOB_DAT), /* type */ | |
2028 | 0, /* rightshift */ | |
2029 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2030 | 64, /* bitsize */ | |
2031 | FALSE, /* pc_relative */ | |
2032 | 0, /* bitpos */ | |
2033 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2034 | bfd_elf_generic_reloc, /* special_function */ | |
2035 | AARCH64_R_STR (GLOB_DAT), /* name */ | |
2036 | TRUE, /* partial_inplace */ | |
2037 | 0xffffffff, /* src_mask */ | |
2038 | 0xffffffff, /* dst_mask */ | |
2039 | FALSE), /* pcrel_offset */ | |
2040 | ||
2041 | HOWTO (AARCH64_R (JUMP_SLOT), /* type */ | |
2042 | 0, /* rightshift */ | |
2043 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2044 | 64, /* bitsize */ | |
2045 | FALSE, /* pc_relative */ | |
2046 | 0, /* bitpos */ | |
2047 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2048 | bfd_elf_generic_reloc, /* special_function */ | |
2049 | AARCH64_R_STR (JUMP_SLOT), /* name */ | |
2050 | TRUE, /* partial_inplace */ | |
2051 | 0xffffffff, /* src_mask */ | |
2052 | 0xffffffff, /* dst_mask */ | |
2053 | FALSE), /* pcrel_offset */ | |
2054 | ||
2055 | HOWTO (AARCH64_R (RELATIVE), /* 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 (RELATIVE), /* name */ | |
2064 | TRUE, /* partial_inplace */ | |
2065 | ALL_ONES, /* src_mask */ | |
2066 | ALL_ONES, /* dst_mask */ | |
2067 | FALSE), /* pcrel_offset */ | |
2068 | ||
2069 | HOWTO (AARCH64_R (TLS_DTPMOD), /* 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_dont, /* complain_on_overflow */ | |
2076 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
2077 | #if ARCH_SIZE == 64 |
2078 | AARCH64_R_STR (TLS_DTPMOD64), /* name */ | |
2079 | #else | |
a6bb11b2 | 2080 | AARCH64_R_STR (TLS_DTPMOD), /* name */ |
da0781dc | 2081 | #endif |
a6bb11b2 YZ |
2082 | FALSE, /* partial_inplace */ |
2083 | 0, /* src_mask */ | |
2084 | ALL_ONES, /* dst_mask */ | |
2085 | FALSE), /* pc_reloffset */ | |
2086 | ||
2087 | HOWTO (AARCH64_R (TLS_DTPREL), /* type */ | |
2088 | 0, /* rightshift */ | |
2089 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2090 | 64, /* bitsize */ | |
2091 | FALSE, /* pc_relative */ | |
2092 | 0, /* bitpos */ | |
2093 | complain_overflow_dont, /* complain_on_overflow */ | |
2094 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
2095 | #if ARCH_SIZE == 64 |
2096 | AARCH64_R_STR (TLS_DTPREL64), /* name */ | |
2097 | #else | |
a6bb11b2 | 2098 | AARCH64_R_STR (TLS_DTPREL), /* name */ |
da0781dc | 2099 | #endif |
a6bb11b2 YZ |
2100 | FALSE, /* partial_inplace */ |
2101 | 0, /* src_mask */ | |
2102 | ALL_ONES, /* dst_mask */ | |
2103 | FALSE), /* pcrel_offset */ | |
2104 | ||
2105 | HOWTO (AARCH64_R (TLS_TPREL), /* type */ | |
2106 | 0, /* rightshift */ | |
2107 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2108 | 64, /* bitsize */ | |
2109 | FALSE, /* pc_relative */ | |
2110 | 0, /* bitpos */ | |
2111 | complain_overflow_dont, /* complain_on_overflow */ | |
2112 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
2113 | #if ARCH_SIZE == 64 |
2114 | AARCH64_R_STR (TLS_TPREL64), /* name */ | |
2115 | #else | |
a6bb11b2 | 2116 | AARCH64_R_STR (TLS_TPREL), /* name */ |
da0781dc | 2117 | #endif |
a6bb11b2 YZ |
2118 | FALSE, /* partial_inplace */ |
2119 | 0, /* src_mask */ | |
2120 | ALL_ONES, /* dst_mask */ | |
2121 | FALSE), /* pcrel_offset */ | |
2122 | ||
2123 | HOWTO (AARCH64_R (TLSDESC), /* type */ | |
2124 | 0, /* rightshift */ | |
2125 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2126 | 64, /* bitsize */ | |
2127 | FALSE, /* pc_relative */ | |
2128 | 0, /* bitpos */ | |
2129 | complain_overflow_dont, /* complain_on_overflow */ | |
2130 | bfd_elf_generic_reloc, /* special_function */ | |
2131 | AARCH64_R_STR (TLSDESC), /* name */ | |
2132 | FALSE, /* partial_inplace */ | |
2133 | 0, /* src_mask */ | |
2134 | ALL_ONES, /* dst_mask */ | |
2135 | FALSE), /* pcrel_offset */ | |
2136 | ||
2137 | HOWTO (AARCH64_R (IRELATIVE), /* type */ | |
2138 | 0, /* rightshift */ | |
2139 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2140 | 64, /* bitsize */ | |
2141 | FALSE, /* pc_relative */ | |
2142 | 0, /* bitpos */ | |
2143 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2144 | bfd_elf_generic_reloc, /* special_function */ | |
2145 | AARCH64_R_STR (IRELATIVE), /* name */ | |
2146 | FALSE, /* partial_inplace */ | |
2147 | 0, /* src_mask */ | |
2148 | ALL_ONES, /* dst_mask */ | |
2149 | FALSE), /* pcrel_offset */ | |
2150 | ||
2151 | EMPTY_HOWTO (0), | |
a06ea964 NC |
2152 | }; |
2153 | ||
a6bb11b2 YZ |
2154 | static reloc_howto_type elfNN_aarch64_howto_none = |
2155 | HOWTO (R_AARCH64_NONE, /* type */ | |
2156 | 0, /* rightshift */ | |
6346d5ca | 2157 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a6bb11b2 YZ |
2158 | 0, /* bitsize */ |
2159 | FALSE, /* pc_relative */ | |
2160 | 0, /* bitpos */ | |
2161 | complain_overflow_dont,/* complain_on_overflow */ | |
2162 | bfd_elf_generic_reloc, /* special_function */ | |
2163 | "R_AARCH64_NONE", /* name */ | |
2164 | FALSE, /* partial_inplace */ | |
2165 | 0, /* src_mask */ | |
2166 | 0, /* dst_mask */ | |
2167 | FALSE); /* pcrel_offset */ | |
2168 | ||
2169 | /* Given HOWTO, return the bfd internal relocation enumerator. */ | |
2170 | ||
2171 | static bfd_reloc_code_real_type | |
2172 | elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type *howto) | |
2173 | { | |
2174 | const int size | |
2175 | = (int) ARRAY_SIZE (elfNN_aarch64_howto_table); | |
2176 | const ptrdiff_t offset | |
2177 | = howto - elfNN_aarch64_howto_table; | |
2178 | ||
2179 | if (offset > 0 && offset < size - 1) | |
2180 | return BFD_RELOC_AARCH64_RELOC_START + offset; | |
2181 | ||
2182 | if (howto == &elfNN_aarch64_howto_none) | |
2183 | return BFD_RELOC_AARCH64_NONE; | |
2184 | ||
2185 | return BFD_RELOC_AARCH64_RELOC_START; | |
2186 | } | |
2187 | ||
2188 | /* Given R_TYPE, return the bfd internal relocation enumerator. */ | |
2189 | ||
2190 | static bfd_reloc_code_real_type | |
0aa13fee | 2191 | elfNN_aarch64_bfd_reloc_from_type (bfd *abfd, unsigned int r_type) |
a6bb11b2 YZ |
2192 | { |
2193 | static bfd_boolean initialized_p = FALSE; | |
2194 | /* Indexed by R_TYPE, values are offsets in the howto_table. */ | |
2195 | static unsigned int offsets[R_AARCH64_end]; | |
2196 | ||
535b785f | 2197 | if (!initialized_p) |
a6bb11b2 YZ |
2198 | { |
2199 | unsigned int i; | |
2200 | ||
2201 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) | |
2202 | if (elfNN_aarch64_howto_table[i].type != 0) | |
2203 | offsets[elfNN_aarch64_howto_table[i].type] = i; | |
2204 | ||
2205 | initialized_p = TRUE; | |
2206 | } | |
2207 | ||
2208 | if (r_type == R_AARCH64_NONE || r_type == R_AARCH64_NULL) | |
2209 | return BFD_RELOC_AARCH64_NONE; | |
2210 | ||
5860e3f8 NC |
2211 | /* PR 17512: file: b371e70a. */ |
2212 | if (r_type >= R_AARCH64_end) | |
2213 | { | |
0aa13fee AM |
2214 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
2215 | abfd, r_type); | |
5860e3f8 NC |
2216 | bfd_set_error (bfd_error_bad_value); |
2217 | return BFD_RELOC_AARCH64_NONE; | |
2218 | } | |
2219 | ||
a6bb11b2 YZ |
2220 | return BFD_RELOC_AARCH64_RELOC_START + offsets[r_type]; |
2221 | } | |
2222 | ||
2223 | struct elf_aarch64_reloc_map | |
2224 | { | |
2225 | bfd_reloc_code_real_type from; | |
2226 | bfd_reloc_code_real_type to; | |
2227 | }; | |
2228 | ||
2229 | /* Map bfd generic reloc to AArch64-specific reloc. */ | |
2230 | static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map[] = | |
2231 | { | |
2232 | {BFD_RELOC_NONE, BFD_RELOC_AARCH64_NONE}, | |
2233 | ||
2234 | /* Basic data relocations. */ | |
2235 | {BFD_RELOC_CTOR, BFD_RELOC_AARCH64_NN}, | |
2236 | {BFD_RELOC_64, BFD_RELOC_AARCH64_64}, | |
2237 | {BFD_RELOC_32, BFD_RELOC_AARCH64_32}, | |
2238 | {BFD_RELOC_16, BFD_RELOC_AARCH64_16}, | |
2239 | {BFD_RELOC_64_PCREL, BFD_RELOC_AARCH64_64_PCREL}, | |
2240 | {BFD_RELOC_32_PCREL, BFD_RELOC_AARCH64_32_PCREL}, | |
2241 | {BFD_RELOC_16_PCREL, BFD_RELOC_AARCH64_16_PCREL}, | |
2242 | }; | |
2243 | ||
2244 | /* Given the bfd internal relocation enumerator in CODE, return the | |
2245 | corresponding howto entry. */ | |
2246 | ||
2247 | static reloc_howto_type * | |
2248 | elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code) | |
2249 | { | |
2250 | unsigned int i; | |
2251 | ||
2252 | /* Convert bfd generic reloc to AArch64-specific reloc. */ | |
2253 | if (code < BFD_RELOC_AARCH64_RELOC_START | |
2254 | || code > BFD_RELOC_AARCH64_RELOC_END) | |
2255 | for (i = 0; i < ARRAY_SIZE (elf_aarch64_reloc_map); i++) | |
2256 | if (elf_aarch64_reloc_map[i].from == code) | |
2257 | { | |
2258 | code = elf_aarch64_reloc_map[i].to; | |
2259 | break; | |
2260 | } | |
2261 | ||
2262 | if (code > BFD_RELOC_AARCH64_RELOC_START | |
2263 | && code < BFD_RELOC_AARCH64_RELOC_END) | |
2264 | if (elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START].type) | |
2265 | return &elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START]; | |
2266 | ||
54757ed1 AP |
2267 | if (code == BFD_RELOC_AARCH64_NONE) |
2268 | return &elfNN_aarch64_howto_none; | |
2269 | ||
a6bb11b2 YZ |
2270 | return NULL; |
2271 | } | |
2272 | ||
a06ea964 | 2273 | static reloc_howto_type * |
0aa13fee | 2274 | elfNN_aarch64_howto_from_type (bfd *abfd, unsigned int r_type) |
a06ea964 | 2275 | { |
a6bb11b2 YZ |
2276 | bfd_reloc_code_real_type val; |
2277 | reloc_howto_type *howto; | |
2278 | ||
cec5225b YZ |
2279 | #if ARCH_SIZE == 32 |
2280 | if (r_type > 256) | |
2281 | { | |
2282 | bfd_set_error (bfd_error_bad_value); | |
2283 | return NULL; | |
2284 | } | |
2285 | #endif | |
2286 | ||
a6bb11b2 YZ |
2287 | if (r_type == R_AARCH64_NONE) |
2288 | return &elfNN_aarch64_howto_none; | |
a06ea964 | 2289 | |
0aa13fee | 2290 | val = elfNN_aarch64_bfd_reloc_from_type (abfd, r_type); |
a6bb11b2 | 2291 | howto = elfNN_aarch64_howto_from_bfd_reloc (val); |
a06ea964 | 2292 | |
a6bb11b2 YZ |
2293 | if (howto != NULL) |
2294 | return howto; | |
a06ea964 | 2295 | |
a06ea964 NC |
2296 | bfd_set_error (bfd_error_bad_value); |
2297 | return NULL; | |
2298 | } | |
2299 | ||
f3185997 | 2300 | static bfd_boolean |
0aa13fee | 2301 | elfNN_aarch64_info_to_howto (bfd *abfd, arelent *bfd_reloc, |
a06ea964 NC |
2302 | Elf_Internal_Rela *elf_reloc) |
2303 | { | |
2304 | unsigned int r_type; | |
2305 | ||
cec5225b | 2306 | r_type = ELFNN_R_TYPE (elf_reloc->r_info); |
0aa13fee | 2307 | bfd_reloc->howto = elfNN_aarch64_howto_from_type (abfd, r_type); |
f3185997 NC |
2308 | |
2309 | if (bfd_reloc->howto == NULL) | |
2310 | { | |
2311 | /* xgettext:c-format */ | |
2312 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, r_type); | |
2313 | return FALSE; | |
2314 | } | |
2315 | return TRUE; | |
a06ea964 NC |
2316 | } |
2317 | ||
a06ea964 | 2318 | static reloc_howto_type * |
cec5225b | 2319 | elfNN_aarch64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
2320 | bfd_reloc_code_real_type code) |
2321 | { | |
a6bb11b2 | 2322 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (code); |
a06ea964 | 2323 | |
a6bb11b2 YZ |
2324 | if (howto != NULL) |
2325 | return howto; | |
a06ea964 NC |
2326 | |
2327 | bfd_set_error (bfd_error_bad_value); | |
2328 | return NULL; | |
2329 | } | |
2330 | ||
2331 | static reloc_howto_type * | |
cec5225b | 2332 | elfNN_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
2333 | const char *r_name) |
2334 | { | |
2335 | unsigned int i; | |
2336 | ||
a6bb11b2 YZ |
2337 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) |
2338 | if (elfNN_aarch64_howto_table[i].name != NULL | |
2339 | && strcasecmp (elfNN_aarch64_howto_table[i].name, r_name) == 0) | |
2340 | return &elfNN_aarch64_howto_table[i]; | |
a06ea964 NC |
2341 | |
2342 | return NULL; | |
2343 | } | |
2344 | ||
07d6d2b8 AM |
2345 | #define TARGET_LITTLE_SYM aarch64_elfNN_le_vec |
2346 | #define TARGET_LITTLE_NAME "elfNN-littleaarch64" | |
2347 | #define TARGET_BIG_SYM aarch64_elfNN_be_vec | |
2348 | #define TARGET_BIG_NAME "elfNN-bigaarch64" | |
a06ea964 | 2349 | |
a06ea964 NC |
2350 | /* The linker script knows the section names for placement. |
2351 | The entry_names are used to do simple name mangling on the stubs. | |
2352 | Given a function name, and its type, the stub can be found. The | |
2353 | name can be changed. The only requirement is the %s be present. */ | |
2354 | #define STUB_ENTRY_NAME "__%s_veneer" | |
2355 | ||
2356 | /* The name of the dynamic interpreter. This is put in the .interp | |
2357 | section. */ | |
2358 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
2359 | ||
2360 | #define AARCH64_MAX_FWD_BRANCH_OFFSET \ | |
2361 | (((1 << 25) - 1) << 2) | |
2362 | #define AARCH64_MAX_BWD_BRANCH_OFFSET \ | |
2363 | (-((1 << 25) << 2)) | |
2364 | ||
2365 | #define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1) | |
2366 | #define AARCH64_MIN_ADRP_IMM (-(1 << 20)) | |
2367 | ||
2368 | static int | |
2369 | aarch64_valid_for_adrp_p (bfd_vma value, bfd_vma place) | |
2370 | { | |
2371 | bfd_signed_vma offset = (bfd_signed_vma) (PG (value) - PG (place)) >> 12; | |
2372 | return offset <= AARCH64_MAX_ADRP_IMM && offset >= AARCH64_MIN_ADRP_IMM; | |
2373 | } | |
2374 | ||
2375 | static int | |
2376 | aarch64_valid_branch_p (bfd_vma value, bfd_vma place) | |
2377 | { | |
2378 | bfd_signed_vma offset = (bfd_signed_vma) (value - place); | |
2379 | return (offset <= AARCH64_MAX_FWD_BRANCH_OFFSET | |
2380 | && offset >= AARCH64_MAX_BWD_BRANCH_OFFSET); | |
2381 | } | |
2382 | ||
2383 | static const uint32_t aarch64_adrp_branch_stub [] = | |
2384 | { | |
2385 | 0x90000010, /* adrp ip0, X */ | |
2386 | /* R_AARCH64_ADR_HI21_PCREL(X) */ | |
2387 | 0x91000210, /* add ip0, ip0, :lo12:X */ | |
2388 | /* R_AARCH64_ADD_ABS_LO12_NC(X) */ | |
2389 | 0xd61f0200, /* br ip0 */ | |
2390 | }; | |
2391 | ||
2392 | static const uint32_t aarch64_long_branch_stub[] = | |
2393 | { | |
cec5225b | 2394 | #if ARCH_SIZE == 64 |
a06ea964 | 2395 | 0x58000090, /* ldr ip0, 1f */ |
cec5225b YZ |
2396 | #else |
2397 | 0x18000090, /* ldr wip0, 1f */ | |
2398 | #endif | |
a06ea964 NC |
2399 | 0x10000011, /* adr ip1, #0 */ |
2400 | 0x8b110210, /* add ip0, ip0, ip1 */ | |
2401 | 0xd61f0200, /* br ip0 */ | |
cec5225b YZ |
2402 | 0x00000000, /* 1: .xword or .word |
2403 | R_AARCH64_PRELNN(X) + 12 | |
a06ea964 NC |
2404 | */ |
2405 | 0x00000000, | |
2406 | }; | |
2407 | ||
68fcca92 JW |
2408 | static const uint32_t aarch64_erratum_835769_stub[] = |
2409 | { | |
2410 | 0x00000000, /* Placeholder for multiply accumulate. */ | |
2411 | 0x14000000, /* b <label> */ | |
2412 | }; | |
2413 | ||
4106101c MS |
2414 | static const uint32_t aarch64_erratum_843419_stub[] = |
2415 | { | |
2416 | 0x00000000, /* Placeholder for LDR instruction. */ | |
2417 | 0x14000000, /* b <label> */ | |
2418 | }; | |
2419 | ||
a06ea964 NC |
2420 | /* Section name for stubs is the associated section name plus this |
2421 | string. */ | |
2422 | #define STUB_SUFFIX ".stub" | |
2423 | ||
cec5225b | 2424 | enum elf_aarch64_stub_type |
a06ea964 NC |
2425 | { |
2426 | aarch64_stub_none, | |
2427 | aarch64_stub_adrp_branch, | |
2428 | aarch64_stub_long_branch, | |
68fcca92 | 2429 | aarch64_stub_erratum_835769_veneer, |
4106101c | 2430 | aarch64_stub_erratum_843419_veneer, |
a06ea964 NC |
2431 | }; |
2432 | ||
cec5225b | 2433 | struct elf_aarch64_stub_hash_entry |
a06ea964 NC |
2434 | { |
2435 | /* Base hash table entry structure. */ | |
2436 | struct bfd_hash_entry root; | |
2437 | ||
2438 | /* The stub section. */ | |
2439 | asection *stub_sec; | |
2440 | ||
2441 | /* Offset within stub_sec of the beginning of this stub. */ | |
2442 | bfd_vma stub_offset; | |
2443 | ||
2444 | /* Given the symbol's value and its section we can determine its final | |
2445 | value when building the stubs (so the stub knows where to jump). */ | |
2446 | bfd_vma target_value; | |
2447 | asection *target_section; | |
2448 | ||
cec5225b | 2449 | enum elf_aarch64_stub_type stub_type; |
a06ea964 NC |
2450 | |
2451 | /* The symbol table entry, if any, that this was derived from. */ | |
cec5225b | 2452 | struct elf_aarch64_link_hash_entry *h; |
a06ea964 NC |
2453 | |
2454 | /* Destination symbol type */ | |
2455 | unsigned char st_type; | |
2456 | ||
2457 | /* Where this stub is being called from, or, in the case of combined | |
2458 | stub sections, the first input section in the group. */ | |
2459 | asection *id_sec; | |
2460 | ||
2461 | /* The name for the local symbol at the start of this stub. The | |
2462 | stub name in the hash table has to be unique; this does not, so | |
2463 | it can be friendlier. */ | |
2464 | char *output_name; | |
68fcca92 JW |
2465 | |
2466 | /* The instruction which caused this stub to be generated (only valid for | |
2467 | erratum 835769 workaround stubs at present). */ | |
2468 | uint32_t veneered_insn; | |
4106101c MS |
2469 | |
2470 | /* In an erratum 843419 workaround stub, the ADRP instruction offset. */ | |
2471 | bfd_vma adrp_offset; | |
a06ea964 NC |
2472 | }; |
2473 | ||
2474 | /* Used to build a map of a section. This is required for mixed-endian | |
2475 | code/data. */ | |
2476 | ||
cec5225b | 2477 | typedef struct elf_elf_section_map |
a06ea964 NC |
2478 | { |
2479 | bfd_vma vma; | |
2480 | char type; | |
2481 | } | |
cec5225b | 2482 | elf_aarch64_section_map; |
a06ea964 NC |
2483 | |
2484 | ||
2485 | typedef struct _aarch64_elf_section_data | |
2486 | { | |
2487 | struct bfd_elf_section_data elf; | |
2488 | unsigned int mapcount; | |
2489 | unsigned int mapsize; | |
cec5225b | 2490 | elf_aarch64_section_map *map; |
a06ea964 NC |
2491 | } |
2492 | _aarch64_elf_section_data; | |
2493 | ||
cec5225b | 2494 | #define elf_aarch64_section_data(sec) \ |
a06ea964 NC |
2495 | ((_aarch64_elf_section_data *) elf_section_data (sec)) |
2496 | ||
4e8516b2 AP |
2497 | /* The size of the thread control block which is defined to be two pointers. */ |
2498 | #define TCB_SIZE (ARCH_SIZE/8)*2 | |
a06ea964 NC |
2499 | |
2500 | struct elf_aarch64_local_symbol | |
2501 | { | |
2502 | unsigned int got_type; | |
2503 | bfd_signed_vma got_refcount; | |
2504 | bfd_vma got_offset; | |
2505 | ||
2506 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The | |
2507 | offset is from the end of the jump table and reserved entries | |
2508 | within the PLTGOT. | |
2509 | ||
2510 | The magic value (bfd_vma) -1 indicates that an offset has not be | |
2511 | allocated. */ | |
2512 | bfd_vma tlsdesc_got_jump_table_offset; | |
2513 | }; | |
2514 | ||
2515 | struct elf_aarch64_obj_tdata | |
2516 | { | |
2517 | struct elf_obj_tdata root; | |
2518 | ||
2519 | /* local symbol descriptors */ | |
2520 | struct elf_aarch64_local_symbol *locals; | |
2521 | ||
2522 | /* Zero to warn when linking objects with incompatible enum sizes. */ | |
2523 | int no_enum_size_warning; | |
2524 | ||
2525 | /* Zero to warn when linking objects with incompatible wchar_t sizes. */ | |
2526 | int no_wchar_size_warning; | |
cd702818 SD |
2527 | |
2528 | /* All GNU_PROPERTY_AARCH64_FEATURE_1_AND properties. */ | |
2529 | uint32_t gnu_and_prop; | |
37c18eed SD |
2530 | |
2531 | /* Zero to warn when linking objects with incompatible | |
2532 | GNU_PROPERTY_AARCH64_FEATURE_1_BTI. */ | |
2533 | int no_bti_warn; | |
2534 | ||
2535 | /* PLT type based on security. */ | |
2536 | aarch64_plt_type plt_type; | |
a06ea964 NC |
2537 | }; |
2538 | ||
2539 | #define elf_aarch64_tdata(bfd) \ | |
2540 | ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any) | |
2541 | ||
cec5225b | 2542 | #define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals) |
a06ea964 NC |
2543 | |
2544 | #define is_aarch64_elf(bfd) \ | |
2545 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
2546 | && elf_tdata (bfd) != NULL \ | |
2547 | && elf_object_id (bfd) == AARCH64_ELF_DATA) | |
2548 | ||
2549 | static bfd_boolean | |
cec5225b | 2550 | elfNN_aarch64_mkobject (bfd *abfd) |
a06ea964 NC |
2551 | { |
2552 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_aarch64_obj_tdata), | |
2553 | AARCH64_ELF_DATA); | |
2554 | } | |
2555 | ||
cec5225b YZ |
2556 | #define elf_aarch64_hash_entry(ent) \ |
2557 | ((struct elf_aarch64_link_hash_entry *)(ent)) | |
a06ea964 NC |
2558 | |
2559 | #define GOT_UNKNOWN 0 | |
2560 | #define GOT_NORMAL 1 | |
2561 | #define GOT_TLS_GD 2 | |
2562 | #define GOT_TLS_IE 4 | |
2563 | #define GOT_TLSDESC_GD 8 | |
2564 | ||
2565 | #define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD)) | |
2566 | ||
2567 | /* AArch64 ELF linker hash entry. */ | |
cec5225b | 2568 | struct elf_aarch64_link_hash_entry |
a06ea964 NC |
2569 | { |
2570 | struct elf_link_hash_entry root; | |
2571 | ||
2572 | /* Track dynamic relocs copied for this symbol. */ | |
2573 | struct elf_dyn_relocs *dyn_relocs; | |
2574 | ||
a06ea964 NC |
2575 | /* Since PLT entries have variable size, we need to record the |
2576 | index into .got.plt instead of recomputing it from the PLT | |
2577 | offset. */ | |
2578 | bfd_signed_vma plt_got_offset; | |
2579 | ||
2580 | /* Bit mask representing the type of GOT entry(s) if any required by | |
2581 | this symbol. */ | |
2582 | unsigned int got_type; | |
2583 | ||
2584 | /* A pointer to the most recently used stub hash entry against this | |
2585 | symbol. */ | |
cec5225b | 2586 | struct elf_aarch64_stub_hash_entry *stub_cache; |
a06ea964 NC |
2587 | |
2588 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset | |
2589 | is from the end of the jump table and reserved entries within the PLTGOT. | |
2590 | ||
2591 | The magic value (bfd_vma) -1 indicates that an offset has not | |
2592 | be allocated. */ | |
2593 | bfd_vma tlsdesc_got_jump_table_offset; | |
2594 | }; | |
2595 | ||
2596 | static unsigned int | |
cec5225b | 2597 | elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry *h, |
a06ea964 NC |
2598 | bfd *abfd, |
2599 | unsigned long r_symndx) | |
2600 | { | |
2601 | if (h) | |
cec5225b | 2602 | return elf_aarch64_hash_entry (h)->got_type; |
a06ea964 | 2603 | |
cec5225b | 2604 | if (! elf_aarch64_locals (abfd)) |
a06ea964 NC |
2605 | return GOT_UNKNOWN; |
2606 | ||
cec5225b | 2607 | return elf_aarch64_locals (abfd)[r_symndx].got_type; |
a06ea964 NC |
2608 | } |
2609 | ||
a06ea964 | 2610 | /* Get the AArch64 elf linker hash table from a link_info structure. */ |
cec5225b YZ |
2611 | #define elf_aarch64_hash_table(info) \ |
2612 | ((struct elf_aarch64_link_hash_table *) ((info)->hash)) | |
a06ea964 NC |
2613 | |
2614 | #define aarch64_stub_hash_lookup(table, string, create, copy) \ | |
cec5225b | 2615 | ((struct elf_aarch64_stub_hash_entry *) \ |
a06ea964 NC |
2616 | bfd_hash_lookup ((table), (string), (create), (copy))) |
2617 | ||
2618 | /* AArch64 ELF linker hash table. */ | |
cec5225b | 2619 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
2620 | { |
2621 | /* The main hash table. */ | |
2622 | struct elf_link_hash_table root; | |
2623 | ||
2624 | /* Nonzero to force PIC branch veneers. */ | |
2625 | int pic_veneer; | |
2626 | ||
68fcca92 JW |
2627 | /* Fix erratum 835769. */ |
2628 | int fix_erratum_835769; | |
2629 | ||
4106101c | 2630 | /* Fix erratum 843419. */ |
739b5c9c | 2631 | erratum_84319_opts fix_erratum_843419; |
4106101c | 2632 | |
1f56df9d JW |
2633 | /* Don't apply link-time values for dynamic relocations. */ |
2634 | int no_apply_dynamic_relocs; | |
2635 | ||
a06ea964 NC |
2636 | /* The number of bytes in the initial entry in the PLT. */ |
2637 | bfd_size_type plt_header_size; | |
2638 | ||
37c18eed SD |
2639 | /* The bytes of the initial PLT entry. */ |
2640 | const bfd_byte *plt0_entry; | |
2641 | ||
2642 | /* The number of bytes in the subsequent PLT entries. */ | |
a06ea964 NC |
2643 | bfd_size_type plt_entry_size; |
2644 | ||
37c18eed SD |
2645 | /* The bytes of the subsequent PLT entry. */ |
2646 | const bfd_byte *plt_entry; | |
2647 | ||
a06ea964 NC |
2648 | /* Small local sym cache. */ |
2649 | struct sym_cache sym_cache; | |
2650 | ||
2651 | /* For convenience in allocate_dynrelocs. */ | |
2652 | bfd *obfd; | |
2653 | ||
2654 | /* The amount of space used by the reserved portion of the sgotplt | |
2655 | section, plus whatever space is used by the jump slots. */ | |
2656 | bfd_vma sgotplt_jump_table_size; | |
2657 | ||
2658 | /* The stub hash table. */ | |
2659 | struct bfd_hash_table stub_hash_table; | |
2660 | ||
2661 | /* Linker stub bfd. */ | |
2662 | bfd *stub_bfd; | |
2663 | ||
2664 | /* Linker call-backs. */ | |
2665 | asection *(*add_stub_section) (const char *, asection *); | |
2666 | void (*layout_sections_again) (void); | |
2667 | ||
2668 | /* Array to keep track of which stub sections have been created, and | |
2669 | information on stub grouping. */ | |
2670 | struct map_stub | |
2671 | { | |
2672 | /* This is the section to which stubs in the group will be | |
2673 | attached. */ | |
2674 | asection *link_sec; | |
2675 | /* The stub section. */ | |
2676 | asection *stub_sec; | |
2677 | } *stub_group; | |
2678 | ||
cec5225b | 2679 | /* Assorted information used by elfNN_aarch64_size_stubs. */ |
a06ea964 | 2680 | unsigned int bfd_count; |
7292b3ac | 2681 | unsigned int top_index; |
a06ea964 NC |
2682 | asection **input_list; |
2683 | ||
2684 | /* The offset into splt of the PLT entry for the TLS descriptor | |
2685 | resolver. Special values are 0, if not necessary (or not found | |
2686 | to be necessary yet), and -1 if needed but not determined | |
2687 | yet. */ | |
2688 | bfd_vma tlsdesc_plt; | |
2689 | ||
37c18eed SD |
2690 | /* The number of bytes in the PLT enty for the TLS descriptor. */ |
2691 | bfd_size_type tlsdesc_plt_entry_size; | |
2692 | ||
a06ea964 NC |
2693 | /* The GOT offset for the lazy trampoline. Communicated to the |
2694 | loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1 | |
2695 | indicates an offset is not allocated. */ | |
2696 | bfd_vma dt_tlsdesc_got; | |
1419bbe5 WN |
2697 | |
2698 | /* Used by local STT_GNU_IFUNC symbols. */ | |
2699 | htab_t loc_hash_table; | |
2700 | void * loc_hash_memory; | |
a06ea964 NC |
2701 | }; |
2702 | ||
a06ea964 NC |
2703 | /* Create an entry in an AArch64 ELF linker hash table. */ |
2704 | ||
2705 | static struct bfd_hash_entry * | |
cec5225b | 2706 | elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry, |
a06ea964 NC |
2707 | struct bfd_hash_table *table, |
2708 | const char *string) | |
2709 | { | |
cec5225b YZ |
2710 | struct elf_aarch64_link_hash_entry *ret = |
2711 | (struct elf_aarch64_link_hash_entry *) entry; | |
a06ea964 NC |
2712 | |
2713 | /* Allocate the structure if it has not already been allocated by a | |
2714 | subclass. */ | |
2715 | if (ret == NULL) | |
2716 | ret = bfd_hash_allocate (table, | |
cec5225b | 2717 | sizeof (struct elf_aarch64_link_hash_entry)); |
a06ea964 NC |
2718 | if (ret == NULL) |
2719 | return (struct bfd_hash_entry *) ret; | |
2720 | ||
2721 | /* Call the allocation method of the superclass. */ | |
cec5225b | 2722 | ret = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
2723 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
2724 | table, string)); | |
2725 | if (ret != NULL) | |
2726 | { | |
2727 | ret->dyn_relocs = NULL; | |
a06ea964 NC |
2728 | ret->got_type = GOT_UNKNOWN; |
2729 | ret->plt_got_offset = (bfd_vma) - 1; | |
2730 | ret->stub_cache = NULL; | |
2731 | ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
2732 | } | |
2733 | ||
2734 | return (struct bfd_hash_entry *) ret; | |
2735 | } | |
2736 | ||
2737 | /* Initialize an entry in the stub hash table. */ | |
2738 | ||
2739 | static struct bfd_hash_entry * | |
2740 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
2741 | struct bfd_hash_table *table, const char *string) | |
2742 | { | |
2743 | /* Allocate the structure if it has not already been allocated by a | |
2744 | subclass. */ | |
2745 | if (entry == NULL) | |
2746 | { | |
2747 | entry = bfd_hash_allocate (table, | |
2748 | sizeof (struct | |
cec5225b | 2749 | elf_aarch64_stub_hash_entry)); |
a06ea964 NC |
2750 | if (entry == NULL) |
2751 | return entry; | |
2752 | } | |
2753 | ||
2754 | /* Call the allocation method of the superclass. */ | |
2755 | entry = bfd_hash_newfunc (entry, table, string); | |
2756 | if (entry != NULL) | |
2757 | { | |
cec5225b | 2758 | struct elf_aarch64_stub_hash_entry *eh; |
a06ea964 NC |
2759 | |
2760 | /* Initialize the local fields. */ | |
cec5225b | 2761 | eh = (struct elf_aarch64_stub_hash_entry *) entry; |
4106101c | 2762 | eh->adrp_offset = 0; |
a06ea964 NC |
2763 | eh->stub_sec = NULL; |
2764 | eh->stub_offset = 0; | |
2765 | eh->target_value = 0; | |
2766 | eh->target_section = NULL; | |
2767 | eh->stub_type = aarch64_stub_none; | |
2768 | eh->h = NULL; | |
2769 | eh->id_sec = NULL; | |
2770 | } | |
2771 | ||
2772 | return entry; | |
2773 | } | |
2774 | ||
1419bbe5 WN |
2775 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry |
2776 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
2777 | as global symbol. We reuse indx and dynstr_index for local symbol | |
2778 | hash since they aren't used by global symbols in this backend. */ | |
2779 | ||
2780 | static hashval_t | |
2781 | elfNN_aarch64_local_htab_hash (const void *ptr) | |
2782 | { | |
2783 | struct elf_link_hash_entry *h | |
2784 | = (struct elf_link_hash_entry *) ptr; | |
2785 | return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); | |
2786 | } | |
2787 | ||
2788 | /* Compare local hash entries. */ | |
2789 | ||
2790 | static int | |
2791 | elfNN_aarch64_local_htab_eq (const void *ptr1, const void *ptr2) | |
2792 | { | |
2793 | struct elf_link_hash_entry *h1 | |
2794 | = (struct elf_link_hash_entry *) ptr1; | |
2795 | struct elf_link_hash_entry *h2 | |
2796 | = (struct elf_link_hash_entry *) ptr2; | |
2797 | ||
2798 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
2799 | } | |
2800 | ||
2801 | /* Find and/or create a hash entry for local symbol. */ | |
2802 | ||
2803 | static struct elf_link_hash_entry * | |
2804 | elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table *htab, | |
2805 | bfd *abfd, const Elf_Internal_Rela *rel, | |
2806 | bfd_boolean create) | |
2807 | { | |
2808 | struct elf_aarch64_link_hash_entry e, *ret; | |
2809 | asection *sec = abfd->sections; | |
2810 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, | |
2811 | ELFNN_R_SYM (rel->r_info)); | |
2812 | void **slot; | |
2813 | ||
2814 | e.root.indx = sec->id; | |
2815 | e.root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2816 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, | |
2817 | create ? INSERT : NO_INSERT); | |
2818 | ||
2819 | if (!slot) | |
2820 | return NULL; | |
2821 | ||
2822 | if (*slot) | |
2823 | { | |
2824 | ret = (struct elf_aarch64_link_hash_entry *) *slot; | |
2825 | return &ret->root; | |
2826 | } | |
2827 | ||
2828 | ret = (struct elf_aarch64_link_hash_entry *) | |
2829 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, | |
2830 | sizeof (struct elf_aarch64_link_hash_entry)); | |
2831 | if (ret) | |
2832 | { | |
2833 | memset (ret, 0, sizeof (*ret)); | |
2834 | ret->root.indx = sec->id; | |
2835 | ret->root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2836 | ret->root.dynindx = -1; | |
2837 | *slot = ret; | |
2838 | } | |
2839 | return &ret->root; | |
2840 | } | |
a06ea964 NC |
2841 | |
2842 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
2843 | ||
2844 | static void | |
cec5225b | 2845 | elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info, |
a06ea964 NC |
2846 | struct elf_link_hash_entry *dir, |
2847 | struct elf_link_hash_entry *ind) | |
2848 | { | |
cec5225b | 2849 | struct elf_aarch64_link_hash_entry *edir, *eind; |
a06ea964 | 2850 | |
cec5225b YZ |
2851 | edir = (struct elf_aarch64_link_hash_entry *) dir; |
2852 | eind = (struct elf_aarch64_link_hash_entry *) ind; | |
a06ea964 NC |
2853 | |
2854 | if (eind->dyn_relocs != NULL) | |
2855 | { | |
2856 | if (edir->dyn_relocs != NULL) | |
2857 | { | |
2858 | struct elf_dyn_relocs **pp; | |
2859 | struct elf_dyn_relocs *p; | |
2860 | ||
2861 | /* Add reloc counts against the indirect sym to the direct sym | |
2862 | list. Merge any entries against the same section. */ | |
2863 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) | |
2864 | { | |
2865 | struct elf_dyn_relocs *q; | |
2866 | ||
2867 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
2868 | if (q->sec == p->sec) | |
2869 | { | |
2870 | q->pc_count += p->pc_count; | |
2871 | q->count += p->count; | |
2872 | *pp = p->next; | |
2873 | break; | |
2874 | } | |
2875 | if (q == NULL) | |
2876 | pp = &p->next; | |
2877 | } | |
2878 | *pp = edir->dyn_relocs; | |
2879 | } | |
2880 | ||
2881 | edir->dyn_relocs = eind->dyn_relocs; | |
2882 | eind->dyn_relocs = NULL; | |
2883 | } | |
2884 | ||
a06ea964 NC |
2885 | if (ind->root.type == bfd_link_hash_indirect) |
2886 | { | |
2887 | /* Copy over PLT info. */ | |
2888 | if (dir->got.refcount <= 0) | |
2889 | { | |
2890 | edir->got_type = eind->got_type; | |
2891 | eind->got_type = GOT_UNKNOWN; | |
2892 | } | |
2893 | } | |
2894 | ||
2895 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
2896 | } | |
2897 | ||
68faa637 AM |
2898 | /* Destroy an AArch64 elf linker hash table. */ |
2899 | ||
2900 | static void | |
d495ab0d | 2901 | elfNN_aarch64_link_hash_table_free (bfd *obfd) |
68faa637 AM |
2902 | { |
2903 | struct elf_aarch64_link_hash_table *ret | |
d495ab0d | 2904 | = (struct elf_aarch64_link_hash_table *) obfd->link.hash; |
68faa637 AM |
2905 | |
2906 | if (ret->loc_hash_table) | |
2907 | htab_delete (ret->loc_hash_table); | |
2908 | if (ret->loc_hash_memory) | |
2909 | objalloc_free ((struct objalloc *) ret->loc_hash_memory); | |
2910 | ||
2911 | bfd_hash_table_free (&ret->stub_hash_table); | |
d495ab0d | 2912 | _bfd_elf_link_hash_table_free (obfd); |
68faa637 AM |
2913 | } |
2914 | ||
a06ea964 NC |
2915 | /* Create an AArch64 elf linker hash table. */ |
2916 | ||
2917 | static struct bfd_link_hash_table * | |
cec5225b | 2918 | elfNN_aarch64_link_hash_table_create (bfd *abfd) |
a06ea964 | 2919 | { |
cec5225b YZ |
2920 | struct elf_aarch64_link_hash_table *ret; |
2921 | bfd_size_type amt = sizeof (struct elf_aarch64_link_hash_table); | |
a06ea964 | 2922 | |
7bf52ea2 | 2923 | ret = bfd_zmalloc (amt); |
a06ea964 NC |
2924 | if (ret == NULL) |
2925 | return NULL; | |
2926 | ||
2927 | if (!_bfd_elf_link_hash_table_init | |
cec5225b YZ |
2928 | (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc, |
2929 | sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA)) | |
a06ea964 NC |
2930 | { |
2931 | free (ret); | |
2932 | return NULL; | |
2933 | } | |
2934 | ||
a06ea964 | 2935 | ret->plt_header_size = PLT_ENTRY_SIZE; |
37c18eed | 2936 | ret->plt0_entry = elfNN_aarch64_small_plt0_entry; |
a06ea964 | 2937 | ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE; |
37c18eed SD |
2938 | ret->plt_entry = elfNN_aarch64_small_plt_entry; |
2939 | ret->tlsdesc_plt_entry_size = PLT_TLSDESC_ENTRY_SIZE; | |
a06ea964 | 2940 | ret->obfd = abfd; |
a06ea964 NC |
2941 | ret->dt_tlsdesc_got = (bfd_vma) - 1; |
2942 | ||
2943 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc, | |
cec5225b | 2944 | sizeof (struct elf_aarch64_stub_hash_entry))) |
a06ea964 | 2945 | { |
d495ab0d | 2946 | _bfd_elf_link_hash_table_free (abfd); |
a06ea964 NC |
2947 | return NULL; |
2948 | } | |
2949 | ||
1419bbe5 WN |
2950 | ret->loc_hash_table = htab_try_create (1024, |
2951 | elfNN_aarch64_local_htab_hash, | |
2952 | elfNN_aarch64_local_htab_eq, | |
2953 | NULL); | |
2954 | ret->loc_hash_memory = objalloc_create (); | |
2955 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
2956 | { | |
d495ab0d | 2957 | elfNN_aarch64_link_hash_table_free (abfd); |
1419bbe5 WN |
2958 | return NULL; |
2959 | } | |
d495ab0d | 2960 | ret->root.root.hash_table_free = elfNN_aarch64_link_hash_table_free; |
1419bbe5 | 2961 | |
a06ea964 NC |
2962 | return &ret->root.root; |
2963 | } | |
2964 | ||
1d75a8e2 NC |
2965 | /* Perform relocation R_TYPE. Returns TRUE upon success, FALSE otherwise. */ |
2966 | ||
a06ea964 NC |
2967 | static bfd_boolean |
2968 | aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section, | |
2969 | bfd_vma offset, bfd_vma value) | |
2970 | { | |
2971 | reloc_howto_type *howto; | |
2972 | bfd_vma place; | |
2973 | ||
0aa13fee | 2974 | howto = elfNN_aarch64_howto_from_type (input_bfd, r_type); |
a06ea964 NC |
2975 | place = (input_section->output_section->vma + input_section->output_offset |
2976 | + offset); | |
caed7120 | 2977 | |
0aa13fee | 2978 | r_type = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
caed7120 YZ |
2979 | value = _bfd_aarch64_elf_resolve_relocation (r_type, place, value, 0, FALSE); |
2980 | return _bfd_aarch64_elf_put_addend (input_bfd, | |
2981 | input_section->contents + offset, r_type, | |
1d75a8e2 | 2982 | howto, value) == bfd_reloc_ok; |
a06ea964 NC |
2983 | } |
2984 | ||
cec5225b | 2985 | static enum elf_aarch64_stub_type |
a06ea964 NC |
2986 | aarch64_select_branch_stub (bfd_vma value, bfd_vma place) |
2987 | { | |
2988 | if (aarch64_valid_for_adrp_p (value, place)) | |
2989 | return aarch64_stub_adrp_branch; | |
2990 | return aarch64_stub_long_branch; | |
2991 | } | |
2992 | ||
2993 | /* Determine the type of stub needed, if any, for a call. */ | |
2994 | ||
cec5225b | 2995 | static enum elf_aarch64_stub_type |
9a228467 | 2996 | aarch64_type_of_stub (asection *input_sec, |
a06ea964 | 2997 | const Elf_Internal_Rela *rel, |
f678ded7 | 2998 | asection *sym_sec, |
a06ea964 | 2999 | unsigned char st_type, |
a06ea964 NC |
3000 | bfd_vma destination) |
3001 | { | |
3002 | bfd_vma location; | |
3003 | bfd_signed_vma branch_offset; | |
3004 | unsigned int r_type; | |
cec5225b | 3005 | enum elf_aarch64_stub_type stub_type = aarch64_stub_none; |
a06ea964 | 3006 | |
f678ded7 | 3007 | if (st_type != STT_FUNC |
2f340668 | 3008 | && (sym_sec == input_sec)) |
a06ea964 NC |
3009 | return stub_type; |
3010 | ||
a06ea964 NC |
3011 | /* Determine where the call point is. */ |
3012 | location = (input_sec->output_offset | |
3013 | + input_sec->output_section->vma + rel->r_offset); | |
3014 | ||
3015 | branch_offset = (bfd_signed_vma) (destination - location); | |
3016 | ||
cec5225b | 3017 | r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
3018 | |
3019 | /* We don't want to redirect any old unconditional jump in this way, | |
3020 | only one which is being used for a sibcall, where it is | |
3021 | acceptable for the IP0 and IP1 registers to be clobbered. */ | |
a6bb11b2 | 3022 | if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26)) |
a06ea964 NC |
3023 | && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET |
3024 | || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET)) | |
3025 | { | |
3026 | stub_type = aarch64_stub_long_branch; | |
3027 | } | |
3028 | ||
3029 | return stub_type; | |
3030 | } | |
3031 | ||
3032 | /* Build a name for an entry in the stub hash table. */ | |
3033 | ||
3034 | static char * | |
cec5225b | 3035 | elfNN_aarch64_stub_name (const asection *input_section, |
a06ea964 | 3036 | const asection *sym_sec, |
cec5225b | 3037 | const struct elf_aarch64_link_hash_entry *hash, |
a06ea964 NC |
3038 | const Elf_Internal_Rela *rel) |
3039 | { | |
3040 | char *stub_name; | |
3041 | bfd_size_type len; | |
3042 | ||
3043 | if (hash) | |
3044 | { | |
3045 | len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1; | |
3046 | stub_name = bfd_malloc (len); | |
3047 | if (stub_name != NULL) | |
3048 | snprintf (stub_name, len, "%08x_%s+%" BFD_VMA_FMT "x", | |
3049 | (unsigned int) input_section->id, | |
3050 | hash->root.root.root.string, | |
3051 | rel->r_addend); | |
3052 | } | |
3053 | else | |
3054 | { | |
3055 | len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1; | |
3056 | stub_name = bfd_malloc (len); | |
3057 | if (stub_name != NULL) | |
3058 | snprintf (stub_name, len, "%08x_%x:%x+%" BFD_VMA_FMT "x", | |
3059 | (unsigned int) input_section->id, | |
3060 | (unsigned int) sym_sec->id, | |
cec5225b | 3061 | (unsigned int) ELFNN_R_SYM (rel->r_info), |
a06ea964 NC |
3062 | rel->r_addend); |
3063 | } | |
3064 | ||
3065 | return stub_name; | |
3066 | } | |
3067 | ||
7f784814 JW |
3068 | /* Return TRUE if symbol H should be hashed in the `.gnu.hash' section. For |
3069 | executable PLT slots where the executable never takes the address of those | |
3070 | functions, the function symbols are not added to the hash table. */ | |
3071 | ||
3072 | static bfd_boolean | |
3073 | elf_aarch64_hash_symbol (struct elf_link_hash_entry *h) | |
3074 | { | |
3075 | if (h->plt.offset != (bfd_vma) -1 | |
3076 | && !h->def_regular | |
3077 | && !h->pointer_equality_needed) | |
3078 | return FALSE; | |
3079 | ||
3080 | return _bfd_elf_hash_symbol (h); | |
3081 | } | |
3082 | ||
3083 | ||
a06ea964 NC |
3084 | /* Look up an entry in the stub hash. Stub entries are cached because |
3085 | creating the stub name takes a bit of time. */ | |
3086 | ||
cec5225b YZ |
3087 | static struct elf_aarch64_stub_hash_entry * |
3088 | elfNN_aarch64_get_stub_entry (const asection *input_section, | |
a06ea964 NC |
3089 | const asection *sym_sec, |
3090 | struct elf_link_hash_entry *hash, | |
3091 | const Elf_Internal_Rela *rel, | |
cec5225b | 3092 | struct elf_aarch64_link_hash_table *htab) |
a06ea964 | 3093 | { |
cec5225b YZ |
3094 | struct elf_aarch64_stub_hash_entry *stub_entry; |
3095 | struct elf_aarch64_link_hash_entry *h = | |
3096 | (struct elf_aarch64_link_hash_entry *) hash; | |
a06ea964 NC |
3097 | const asection *id_sec; |
3098 | ||
3099 | if ((input_section->flags & SEC_CODE) == 0) | |
3100 | return NULL; | |
3101 | ||
3102 | /* If this input section is part of a group of sections sharing one | |
3103 | stub section, then use the id of the first section in the group. | |
3104 | Stub names need to include a section id, as there may well be | |
3105 | more than one stub used to reach say, printf, and we need to | |
3106 | distinguish between them. */ | |
3107 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3108 | ||
3109 | if (h != NULL && h->stub_cache != NULL | |
3110 | && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec) | |
3111 | { | |
3112 | stub_entry = h->stub_cache; | |
3113 | } | |
3114 | else | |
3115 | { | |
3116 | char *stub_name; | |
3117 | ||
cec5225b | 3118 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel); |
a06ea964 NC |
3119 | if (stub_name == NULL) |
3120 | return NULL; | |
3121 | ||
3122 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
3123 | stub_name, FALSE, FALSE); | |
3124 | if (h != NULL) | |
3125 | h->stub_cache = stub_entry; | |
3126 | ||
3127 | free (stub_name); | |
3128 | } | |
3129 | ||
3130 | return stub_entry; | |
3131 | } | |
3132 | ||
a06ea964 | 3133 | |
66585675 MS |
3134 | /* Create a stub section. */ |
3135 | ||
3136 | static asection * | |
3137 | _bfd_aarch64_create_stub_section (asection *section, | |
3138 | struct elf_aarch64_link_hash_table *htab) | |
3139 | { | |
3140 | size_t namelen; | |
3141 | bfd_size_type len; | |
3142 | char *s_name; | |
3143 | ||
3144 | namelen = strlen (section->name); | |
3145 | len = namelen + sizeof (STUB_SUFFIX); | |
3146 | s_name = bfd_alloc (htab->stub_bfd, len); | |
3147 | if (s_name == NULL) | |
3148 | return NULL; | |
3149 | ||
3150 | memcpy (s_name, section->name, namelen); | |
3151 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
3152 | return (*htab->add_stub_section) (s_name, section); | |
3153 | } | |
3154 | ||
3155 | ||
fc6d53be MS |
3156 | /* Find or create a stub section for a link section. |
3157 | ||
3158 | Fix or create the stub section used to collect stubs attached to | |
3159 | the specified link section. */ | |
3160 | ||
3161 | static asection * | |
3162 | _bfd_aarch64_get_stub_for_link_section (asection *link_section, | |
3163 | struct elf_aarch64_link_hash_table *htab) | |
3164 | { | |
3165 | if (htab->stub_group[link_section->id].stub_sec == NULL) | |
3166 | htab->stub_group[link_section->id].stub_sec | |
3167 | = _bfd_aarch64_create_stub_section (link_section, htab); | |
3168 | return htab->stub_group[link_section->id].stub_sec; | |
3169 | } | |
3170 | ||
3171 | ||
ef857521 MS |
3172 | /* Find or create a stub section in the stub group for an input |
3173 | section. */ | |
3174 | ||
3175 | static asection * | |
3176 | _bfd_aarch64_create_or_find_stub_sec (asection *section, | |
3177 | struct elf_aarch64_link_hash_table *htab) | |
a06ea964 | 3178 | { |
fc6d53be MS |
3179 | asection *link_sec = htab->stub_group[section->id].link_sec; |
3180 | return _bfd_aarch64_get_stub_for_link_section (link_sec, htab); | |
ef857521 MS |
3181 | } |
3182 | ||
3183 | ||
3184 | /* Add a new stub entry in the stub group associated with an input | |
3185 | section to the stub hash. Not all fields of the new stub entry are | |
3186 | initialised. */ | |
3187 | ||
3188 | static struct elf_aarch64_stub_hash_entry * | |
3189 | _bfd_aarch64_add_stub_entry_in_group (const char *stub_name, | |
3190 | asection *section, | |
3191 | struct elf_aarch64_link_hash_table *htab) | |
3192 | { | |
3193 | asection *link_sec; | |
3194 | asection *stub_sec; | |
3195 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
3196 | ||
3197 | link_sec = htab->stub_group[section->id].link_sec; | |
3198 | stub_sec = _bfd_aarch64_create_or_find_stub_sec (section, htab); | |
3199 | ||
a06ea964 NC |
3200 | /* Enter this entry into the linker stub hash table. */ |
3201 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
3202 | TRUE, FALSE); | |
3203 | if (stub_entry == NULL) | |
3204 | { | |
695344c0 | 3205 | /* xgettext:c-format */ |
871b3ab2 | 3206 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
4eca0228 | 3207 | section->owner, stub_name); |
a06ea964 NC |
3208 | return NULL; |
3209 | } | |
3210 | ||
3211 | stub_entry->stub_sec = stub_sec; | |
3212 | stub_entry->stub_offset = 0; | |
3213 | stub_entry->id_sec = link_sec; | |
3214 | ||
3215 | return stub_entry; | |
3216 | } | |
3217 | ||
4106101c MS |
3218 | /* Add a new stub entry in the final stub section to the stub hash. |
3219 | Not all fields of the new stub entry are initialised. */ | |
3220 | ||
3221 | static struct elf_aarch64_stub_hash_entry * | |
3222 | _bfd_aarch64_add_stub_entry_after (const char *stub_name, | |
3223 | asection *link_section, | |
3224 | struct elf_aarch64_link_hash_table *htab) | |
3225 | { | |
3226 | asection *stub_sec; | |
3227 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
3228 | ||
739b5c9c TC |
3229 | stub_sec = NULL; |
3230 | /* Only create the actual stub if we will end up needing it. */ | |
3231 | if (htab->fix_erratum_843419 & ERRAT_ADRP) | |
3232 | stub_sec = _bfd_aarch64_get_stub_for_link_section (link_section, htab); | |
4106101c MS |
3233 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, |
3234 | TRUE, FALSE); | |
3235 | if (stub_entry == NULL) | |
3236 | { | |
4eca0228 | 3237 | _bfd_error_handler (_("cannot create stub entry %s"), stub_name); |
4106101c MS |
3238 | return NULL; |
3239 | } | |
3240 | ||
3241 | stub_entry->stub_sec = stub_sec; | |
3242 | stub_entry->stub_offset = 0; | |
3243 | stub_entry->id_sec = link_section; | |
3244 | ||
3245 | return stub_entry; | |
3246 | } | |
3247 | ||
3248 | ||
a06ea964 NC |
3249 | static bfd_boolean |
3250 | aarch64_build_one_stub (struct bfd_hash_entry *gen_entry, | |
3251 | void *in_arg ATTRIBUTE_UNUSED) | |
3252 | { | |
cec5225b | 3253 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
3254 | asection *stub_sec; |
3255 | bfd *stub_bfd; | |
3256 | bfd_byte *loc; | |
3257 | bfd_vma sym_value; | |
68fcca92 JW |
3258 | bfd_vma veneered_insn_loc; |
3259 | bfd_vma veneer_entry_loc; | |
3260 | bfd_signed_vma branch_offset = 0; | |
a06ea964 NC |
3261 | unsigned int template_size; |
3262 | const uint32_t *template; | |
3263 | unsigned int i; | |
3264 | ||
3265 | /* Massage our args to the form they really have. */ | |
cec5225b | 3266 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
3267 | |
3268 | stub_sec = stub_entry->stub_sec; | |
3269 | ||
3270 | /* Make a note of the offset within the stubs for this entry. */ | |
3271 | stub_entry->stub_offset = stub_sec->size; | |
3272 | loc = stub_sec->contents + stub_entry->stub_offset; | |
3273 | ||
3274 | stub_bfd = stub_sec->owner; | |
3275 | ||
3276 | /* This is the address of the stub destination. */ | |
3277 | sym_value = (stub_entry->target_value | |
3278 | + stub_entry->target_section->output_offset | |
3279 | + stub_entry->target_section->output_section->vma); | |
3280 | ||
3281 | if (stub_entry->stub_type == aarch64_stub_long_branch) | |
3282 | { | |
3283 | bfd_vma place = (stub_entry->stub_offset + stub_sec->output_section->vma | |
3284 | + stub_sec->output_offset); | |
3285 | ||
3286 | /* See if we can relax the stub. */ | |
3287 | if (aarch64_valid_for_adrp_p (sym_value, place)) | |
3288 | stub_entry->stub_type = aarch64_select_branch_stub (sym_value, place); | |
3289 | } | |
3290 | ||
3291 | switch (stub_entry->stub_type) | |
3292 | { | |
3293 | case aarch64_stub_adrp_branch: | |
3294 | template = aarch64_adrp_branch_stub; | |
3295 | template_size = sizeof (aarch64_adrp_branch_stub); | |
3296 | break; | |
3297 | case aarch64_stub_long_branch: | |
3298 | template = aarch64_long_branch_stub; | |
3299 | template_size = sizeof (aarch64_long_branch_stub); | |
3300 | break; | |
68fcca92 JW |
3301 | case aarch64_stub_erratum_835769_veneer: |
3302 | template = aarch64_erratum_835769_stub; | |
3303 | template_size = sizeof (aarch64_erratum_835769_stub); | |
3304 | break; | |
4106101c MS |
3305 | case aarch64_stub_erratum_843419_veneer: |
3306 | template = aarch64_erratum_843419_stub; | |
3307 | template_size = sizeof (aarch64_erratum_843419_stub); | |
3308 | break; | |
a06ea964 | 3309 | default: |
8e2fe09f | 3310 | abort (); |
a06ea964 NC |
3311 | } |
3312 | ||
3313 | for (i = 0; i < (template_size / sizeof template[0]); i++) | |
3314 | { | |
3315 | bfd_putl32 (template[i], loc); | |
3316 | loc += 4; | |
3317 | } | |
3318 | ||
3319 | template_size = (template_size + 7) & ~7; | |
3320 | stub_sec->size += template_size; | |
3321 | ||
3322 | switch (stub_entry->stub_type) | |
3323 | { | |
3324 | case aarch64_stub_adrp_branch: | |
1d75a8e2 NC |
3325 | if (!aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21), stub_bfd, stub_sec, |
3326 | stub_entry->stub_offset, sym_value)) | |
a06ea964 NC |
3327 | /* The stub would not have been relaxed if the offset was out |
3328 | of range. */ | |
3329 | BFD_FAIL (); | |
3330 | ||
1d75a8e2 NC |
3331 | if (!aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC), stub_bfd, stub_sec, |
3332 | stub_entry->stub_offset + 4, sym_value)) | |
93ca8569 | 3333 | BFD_FAIL (); |
a06ea964 NC |
3334 | break; |
3335 | ||
3336 | case aarch64_stub_long_branch: | |
3337 | /* We want the value relative to the address 12 bytes back from the | |
07d6d2b8 | 3338 | value itself. */ |
1d75a8e2 NC |
3339 | if (!aarch64_relocate (AARCH64_R (PRELNN), stub_bfd, stub_sec, |
3340 | stub_entry->stub_offset + 16, sym_value + 12)) | |
93ca8569 | 3341 | BFD_FAIL (); |
a06ea964 | 3342 | break; |
68fcca92 JW |
3343 | |
3344 | case aarch64_stub_erratum_835769_veneer: | |
3345 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
3346 | + stub_entry->target_section->output_offset | |
3347 | + stub_entry->target_value; | |
3348 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
3349 | + stub_entry->stub_sec->output_offset | |
3350 | + stub_entry->stub_offset; | |
3351 | branch_offset = veneered_insn_loc - veneer_entry_loc; | |
3352 | branch_offset >>= 2; | |
3353 | branch_offset &= 0x3ffffff; | |
3354 | bfd_putl32 (stub_entry->veneered_insn, | |
3355 | stub_sec->contents + stub_entry->stub_offset); | |
3356 | bfd_putl32 (template[1] | branch_offset, | |
3357 | stub_sec->contents + stub_entry->stub_offset + 4); | |
3358 | break; | |
3359 | ||
4106101c | 3360 | case aarch64_stub_erratum_843419_veneer: |
1d75a8e2 NC |
3361 | if (!aarch64_relocate (AARCH64_R (JUMP26), stub_bfd, stub_sec, |
3362 | stub_entry->stub_offset + 4, sym_value + 4)) | |
4106101c MS |
3363 | BFD_FAIL (); |
3364 | break; | |
3365 | ||
a06ea964 | 3366 | default: |
8e2fe09f | 3367 | abort (); |
a06ea964 NC |
3368 | } |
3369 | ||
3370 | return TRUE; | |
3371 | } | |
3372 | ||
3373 | /* As above, but don't actually build the stub. Just bump offset so | |
3374 | we know stub section sizes. */ | |
3375 | ||
3376 | static bfd_boolean | |
739b5c9c | 3377 | aarch64_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
a06ea964 | 3378 | { |
cec5225b | 3379 | struct elf_aarch64_stub_hash_entry *stub_entry; |
739b5c9c | 3380 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
3381 | int size; |
3382 | ||
3383 | /* Massage our args to the form they really have. */ | |
cec5225b | 3384 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
739b5c9c | 3385 | htab = (struct elf_aarch64_link_hash_table *) in_arg; |
a06ea964 NC |
3386 | |
3387 | switch (stub_entry->stub_type) | |
3388 | { | |
3389 | case aarch64_stub_adrp_branch: | |
3390 | size = sizeof (aarch64_adrp_branch_stub); | |
3391 | break; | |
3392 | case aarch64_stub_long_branch: | |
3393 | size = sizeof (aarch64_long_branch_stub); | |
3394 | break; | |
68fcca92 JW |
3395 | case aarch64_stub_erratum_835769_veneer: |
3396 | size = sizeof (aarch64_erratum_835769_stub); | |
3397 | break; | |
4106101c | 3398 | case aarch64_stub_erratum_843419_veneer: |
739b5c9c TC |
3399 | { |
3400 | if (htab->fix_erratum_843419 == ERRAT_ADR) | |
3401 | return TRUE; | |
3402 | size = sizeof (aarch64_erratum_843419_stub); | |
3403 | } | |
4106101c | 3404 | break; |
a06ea964 | 3405 | default: |
8e2fe09f | 3406 | abort (); |
a06ea964 NC |
3407 | } |
3408 | ||
3409 | size = (size + 7) & ~7; | |
3410 | stub_entry->stub_sec->size += size; | |
3411 | return TRUE; | |
3412 | } | |
3413 | ||
3414 | /* External entry points for sizing and building linker stubs. */ | |
3415 | ||
3416 | /* Set up various things so that we can make a list of input sections | |
3417 | for each output section included in the link. Returns -1 on error, | |
3418 | 0 when no stubs will be needed, and 1 on success. */ | |
3419 | ||
3420 | int | |
cec5225b | 3421 | elfNN_aarch64_setup_section_lists (bfd *output_bfd, |
a06ea964 NC |
3422 | struct bfd_link_info *info) |
3423 | { | |
3424 | bfd *input_bfd; | |
3425 | unsigned int bfd_count; | |
7292b3ac | 3426 | unsigned int top_id, top_index; |
a06ea964 NC |
3427 | asection *section; |
3428 | asection **input_list, **list; | |
3429 | bfd_size_type amt; | |
cec5225b YZ |
3430 | struct elf_aarch64_link_hash_table *htab = |
3431 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
3432 | |
3433 | if (!is_elf_hash_table (htab)) | |
3434 | return 0; | |
3435 | ||
3436 | /* Count the number of input BFDs and find the top input section id. */ | |
3437 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
c72f2fb2 | 3438 | input_bfd != NULL; input_bfd = input_bfd->link.next) |
a06ea964 NC |
3439 | { |
3440 | bfd_count += 1; | |
3441 | for (section = input_bfd->sections; | |
3442 | section != NULL; section = section->next) | |
3443 | { | |
3444 | if (top_id < section->id) | |
3445 | top_id = section->id; | |
3446 | } | |
3447 | } | |
3448 | htab->bfd_count = bfd_count; | |
3449 | ||
3450 | amt = sizeof (struct map_stub) * (top_id + 1); | |
3451 | htab->stub_group = bfd_zmalloc (amt); | |
3452 | if (htab->stub_group == NULL) | |
3453 | return -1; | |
3454 | ||
3455 | /* We can't use output_bfd->section_count here to find the top output | |
3456 | section index as some sections may have been removed, and | |
3457 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
3458 | for (section = output_bfd->sections, top_index = 0; | |
3459 | section != NULL; section = section->next) | |
3460 | { | |
3461 | if (top_index < section->index) | |
3462 | top_index = section->index; | |
3463 | } | |
3464 | ||
3465 | htab->top_index = top_index; | |
3466 | amt = sizeof (asection *) * (top_index + 1); | |
3467 | input_list = bfd_malloc (amt); | |
3468 | htab->input_list = input_list; | |
3469 | if (input_list == NULL) | |
3470 | return -1; | |
3471 | ||
3472 | /* For sections we aren't interested in, mark their entries with a | |
3473 | value we can check later. */ | |
3474 | list = input_list + top_index; | |
3475 | do | |
3476 | *list = bfd_abs_section_ptr; | |
3477 | while (list-- != input_list); | |
3478 | ||
3479 | for (section = output_bfd->sections; | |
3480 | section != NULL; section = section->next) | |
3481 | { | |
3482 | if ((section->flags & SEC_CODE) != 0) | |
3483 | input_list[section->index] = NULL; | |
3484 | } | |
3485 | ||
3486 | return 1; | |
3487 | } | |
3488 | ||
cec5225b | 3489 | /* Used by elfNN_aarch64_next_input_section and group_sections. */ |
a06ea964 NC |
3490 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3491 | ||
3492 | /* The linker repeatedly calls this function for each input section, | |
3493 | in the order that input sections are linked into output sections. | |
3494 | Build lists of input sections to determine groupings between which | |
3495 | we may insert linker stubs. */ | |
3496 | ||
3497 | void | |
cec5225b | 3498 | elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec) |
a06ea964 | 3499 | { |
cec5225b YZ |
3500 | struct elf_aarch64_link_hash_table *htab = |
3501 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
3502 | |
3503 | if (isec->output_section->index <= htab->top_index) | |
3504 | { | |
3505 | asection **list = htab->input_list + isec->output_section->index; | |
3506 | ||
3507 | if (*list != bfd_abs_section_ptr) | |
3508 | { | |
3509 | /* Steal the link_sec pointer for our list. */ | |
3510 | /* This happens to make the list in reverse order, | |
3511 | which is what we want. */ | |
3512 | PREV_SEC (isec) = *list; | |
3513 | *list = isec; | |
3514 | } | |
3515 | } | |
3516 | } | |
3517 | ||
3518 | /* See whether we can group stub sections together. Grouping stub | |
3519 | sections may result in fewer stubs. More importantly, we need to | |
3520 | put all .init* and .fini* stubs at the beginning of the .init or | |
3521 | .fini output sections respectively, because glibc splits the | |
3522 | _init and _fini functions into multiple parts. Putting a stub in | |
3523 | the middle of a function is not a good idea. */ | |
3524 | ||
3525 | static void | |
cec5225b | 3526 | group_sections (struct elf_aarch64_link_hash_table *htab, |
a06ea964 NC |
3527 | bfd_size_type stub_group_size, |
3528 | bfd_boolean stubs_always_before_branch) | |
3529 | { | |
3530 | asection **list = htab->input_list + htab->top_index; | |
3531 | ||
3532 | do | |
3533 | { | |
3534 | asection *tail = *list; | |
3535 | ||
3536 | if (tail == bfd_abs_section_ptr) | |
3537 | continue; | |
3538 | ||
3539 | while (tail != NULL) | |
3540 | { | |
3541 | asection *curr; | |
3542 | asection *prev; | |
3543 | bfd_size_type total; | |
3544 | ||
3545 | curr = tail; | |
3546 | total = tail->size; | |
3547 | while ((prev = PREV_SEC (curr)) != NULL | |
3548 | && ((total += curr->output_offset - prev->output_offset) | |
3549 | < stub_group_size)) | |
3550 | curr = prev; | |
3551 | ||
3552 | /* OK, the size from the start of CURR to the end is less | |
3553 | than stub_group_size and thus can be handled by one stub | |
3554 | section. (Or the tail section is itself larger than | |
3555 | stub_group_size, in which case we may be toast.) | |
3556 | We should really be keeping track of the total size of | |
3557 | stubs added here, as stubs contribute to the final output | |
3558 | section size. */ | |
3559 | do | |
3560 | { | |
3561 | prev = PREV_SEC (tail); | |
3562 | /* Set up this stub group. */ | |
3563 | htab->stub_group[tail->id].link_sec = curr; | |
3564 | } | |
3565 | while (tail != curr && (tail = prev) != NULL); | |
3566 | ||
3567 | /* But wait, there's more! Input sections up to stub_group_size | |
3568 | bytes before the stub section can be handled by it too. */ | |
3569 | if (!stubs_always_before_branch) | |
3570 | { | |
3571 | total = 0; | |
3572 | while (prev != NULL | |
3573 | && ((total += tail->output_offset - prev->output_offset) | |
3574 | < stub_group_size)) | |
3575 | { | |
3576 | tail = prev; | |
3577 | prev = PREV_SEC (tail); | |
3578 | htab->stub_group[tail->id].link_sec = curr; | |
3579 | } | |
3580 | } | |
3581 | tail = prev; | |
3582 | } | |
3583 | } | |
3584 | while (list-- != htab->input_list); | |
3585 | ||
3586 | free (htab->input_list); | |
3587 | } | |
3588 | ||
3589 | #undef PREV_SEC | |
3590 | ||
68fcca92 JW |
3591 | #define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1)) |
3592 | ||
3593 | #define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5) | |
3594 | #define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5) | |
3595 | #define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5) | |
3596 | #define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5) | |
3597 | #define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5) | |
3598 | #define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5) | |
3599 | ||
3600 | #define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000) | |
3601 | #define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1) | |
3602 | #define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3) | |
3603 | #define AARCH64_ZR 0x1f | |
3604 | ||
3605 | /* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for | |
3606 | LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */ | |
3607 | ||
3608 | #define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1) | |
3609 | #define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000) | |
3610 | #define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000) | |
3611 | #define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000) | |
3612 | #define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000) | |
3613 | #define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000) | |
3614 | #define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000) | |
3615 | #define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000) | |
3616 | #define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000) | |
3617 | #define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400) | |
3618 | #define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800) | |
3619 | #define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00) | |
3620 | #define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800) | |
3621 | #define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000) | |
3622 | #define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000) | |
3623 | #define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000) | |
3624 | #define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000) | |
3625 | #define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000) | |
3626 | ||
3d14faea MS |
3627 | /* Classify an INSN if it is indeed a load/store. |
3628 | ||
3629 | Return TRUE if INSN is a LD/ST instruction otherwise return FALSE. | |
3630 | ||
3631 | For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2 | |
3632 | is set equal to RT. | |
3633 | ||
2d0ca824 | 3634 | For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. */ |
68fcca92 JW |
3635 | |
3636 | static bfd_boolean | |
3d14faea | 3637 | aarch64_mem_op_p (uint32_t insn, unsigned int *rt, unsigned int *rt2, |
68fcca92 JW |
3638 | bfd_boolean *pair, bfd_boolean *load) |
3639 | { | |
3640 | uint32_t opcode; | |
3641 | unsigned int r; | |
3642 | uint32_t opc = 0; | |
3643 | uint32_t v = 0; | |
3644 | uint32_t opc_v = 0; | |
3645 | ||
de194d85 | 3646 | /* Bail out quickly if INSN doesn't fall into the load-store |
68fcca92 JW |
3647 | encoding space. */ |
3648 | if (!AARCH64_LDST (insn)) | |
3649 | return FALSE; | |
3650 | ||
3651 | *pair = FALSE; | |
3652 | *load = FALSE; | |
3653 | if (AARCH64_LDST_EX (insn)) | |
3654 | { | |
3655 | *rt = AARCH64_RT (insn); | |
3d14faea | 3656 | *rt2 = *rt; |
68fcca92 | 3657 | if (AARCH64_BIT (insn, 21) == 1) |
07d6d2b8 | 3658 | { |
68fcca92 | 3659 | *pair = TRUE; |
3d14faea | 3660 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
3661 | } |
3662 | *load = AARCH64_LD (insn); | |
3663 | return TRUE; | |
3664 | } | |
3665 | else if (AARCH64_LDST_NAP (insn) | |
3666 | || AARCH64_LDSTP_PI (insn) | |
3667 | || AARCH64_LDSTP_O (insn) | |
3668 | || AARCH64_LDSTP_PRE (insn)) | |
3669 | { | |
3670 | *pair = TRUE; | |
3671 | *rt = AARCH64_RT (insn); | |
3d14faea | 3672 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
3673 | *load = AARCH64_LD (insn); |
3674 | return TRUE; | |
3675 | } | |
3676 | else if (AARCH64_LDST_PCREL (insn) | |
3677 | || AARCH64_LDST_UI (insn) | |
3678 | || AARCH64_LDST_PIIMM (insn) | |
3679 | || AARCH64_LDST_U (insn) | |
3680 | || AARCH64_LDST_PREIMM (insn) | |
3681 | || AARCH64_LDST_RO (insn) | |
3682 | || AARCH64_LDST_UIMM (insn)) | |
3683 | { | |
3684 | *rt = AARCH64_RT (insn); | |
3d14faea | 3685 | *rt2 = *rt; |
68fcca92 JW |
3686 | if (AARCH64_LDST_PCREL (insn)) |
3687 | *load = TRUE; | |
3688 | opc = AARCH64_BITS (insn, 22, 2); | |
3689 | v = AARCH64_BIT (insn, 26); | |
3690 | opc_v = opc | (v << 2); | |
3691 | *load = (opc_v == 1 || opc_v == 2 || opc_v == 3 | |
3692 | || opc_v == 5 || opc_v == 7); | |
3693 | return TRUE; | |
3694 | } | |
3695 | else if (AARCH64_LDST_SIMD_M (insn) | |
3696 | || AARCH64_LDST_SIMD_M_PI (insn)) | |
3697 | { | |
3698 | *rt = AARCH64_RT (insn); | |
3699 | *load = AARCH64_BIT (insn, 22); | |
3700 | opcode = (insn >> 12) & 0xf; | |
3701 | switch (opcode) | |
3702 | { | |
3703 | case 0: | |
3704 | case 2: | |
3d14faea | 3705 | *rt2 = *rt + 3; |
68fcca92 JW |
3706 | break; |
3707 | ||
3708 | case 4: | |
3709 | case 6: | |
3d14faea | 3710 | *rt2 = *rt + 2; |
68fcca92 JW |
3711 | break; |
3712 | ||
3713 | case 7: | |
3d14faea | 3714 | *rt2 = *rt; |
68fcca92 JW |
3715 | break; |
3716 | ||
3717 | case 8: | |
3718 | case 10: | |
3d14faea | 3719 | *rt2 = *rt + 1; |
68fcca92 JW |
3720 | break; |
3721 | ||
3722 | default: | |
3723 | return FALSE; | |
3724 | } | |
3725 | return TRUE; | |
3726 | } | |
3727 | else if (AARCH64_LDST_SIMD_S (insn) | |
3728 | || AARCH64_LDST_SIMD_S_PI (insn)) | |
3729 | { | |
3730 | *rt = AARCH64_RT (insn); | |
3731 | r = (insn >> 21) & 1; | |
3732 | *load = AARCH64_BIT (insn, 22); | |
3733 | opcode = (insn >> 13) & 0x7; | |
3734 | switch (opcode) | |
3735 | { | |
3736 | case 0: | |
3737 | case 2: | |
3738 | case 4: | |
3d14faea | 3739 | *rt2 = *rt + r; |
68fcca92 JW |
3740 | break; |
3741 | ||
3742 | case 1: | |
3743 | case 3: | |
3744 | case 5: | |
3d14faea | 3745 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
3746 | break; |
3747 | ||
3748 | case 6: | |
3d14faea | 3749 | *rt2 = *rt + r; |
68fcca92 JW |
3750 | break; |
3751 | ||
3752 | case 7: | |
3d14faea | 3753 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
3754 | break; |
3755 | ||
3756 | default: | |
3757 | return FALSE; | |
3758 | } | |
3759 | return TRUE; | |
3760 | } | |
3761 | ||
3762 | return FALSE; | |
3763 | } | |
3764 | ||
3765 | /* Return TRUE if INSN is multiply-accumulate. */ | |
3766 | ||
3767 | static bfd_boolean | |
3768 | aarch64_mlxl_p (uint32_t insn) | |
3769 | { | |
3770 | uint32_t op31 = AARCH64_OP31 (insn); | |
3771 | ||
3772 | if (AARCH64_MAC (insn) | |
3773 | && (op31 == 0 || op31 == 1 || op31 == 5) | |
3774 | /* Exclude MUL instructions which are encoded as a multiple accumulate | |
3775 | with RA = XZR. */ | |
3776 | && AARCH64_RA (insn) != AARCH64_ZR) | |
3777 | return TRUE; | |
3778 | ||
3779 | return FALSE; | |
3780 | } | |
3781 | ||
3782 | /* Some early revisions of the Cortex-A53 have an erratum (835769) whereby | |
3783 | it is possible for a 64-bit multiply-accumulate instruction to generate an | |
3784 | incorrect result. The details are quite complex and hard to | |
3785 | determine statically, since branches in the code may exist in some | |
3786 | circumstances, but all cases end with a memory (load, store, or | |
3787 | prefetch) instruction followed immediately by the multiply-accumulate | |
3788 | operation. We employ a linker patching technique, by moving the potentially | |
3789 | affected multiply-accumulate instruction into a patch region and replacing | |
3790 | the original instruction with a branch to the patch. This function checks | |
3791 | if INSN_1 is the memory operation followed by a multiply-accumulate | |
3792 | operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE | |
3793 | if INSN_1 and INSN_2 are safe. */ | |
3794 | ||
3795 | static bfd_boolean | |
3796 | aarch64_erratum_sequence (uint32_t insn_1, uint32_t insn_2) | |
3797 | { | |
3798 | uint32_t rt; | |
3d14faea | 3799 | uint32_t rt2; |
68fcca92 JW |
3800 | uint32_t rn; |
3801 | uint32_t rm; | |
3802 | uint32_t ra; | |
3803 | bfd_boolean pair; | |
3804 | bfd_boolean load; | |
3805 | ||
3806 | if (aarch64_mlxl_p (insn_2) | |
3d14faea | 3807 | && aarch64_mem_op_p (insn_1, &rt, &rt2, &pair, &load)) |
68fcca92 JW |
3808 | { |
3809 | /* Any SIMD memory op is independent of the subsequent MLA | |
3810 | by definition of the erratum. */ | |
3811 | if (AARCH64_BIT (insn_1, 26)) | |
3812 | return TRUE; | |
3813 | ||
3814 | /* If not SIMD, check for integer memory ops and MLA relationship. */ | |
3815 | rn = AARCH64_RN (insn_2); | |
3816 | ra = AARCH64_RA (insn_2); | |
3817 | rm = AARCH64_RM (insn_2); | |
3818 | ||
3819 | /* If this is a load and there's a true(RAW) dependency, we are safe | |
3820 | and this is not an erratum sequence. */ | |
3821 | if (load && | |
3822 | (rt == rn || rt == rm || rt == ra | |
3d14faea | 3823 | || (pair && (rt2 == rn || rt2 == rm || rt2 == ra)))) |
68fcca92 JW |
3824 | return FALSE; |
3825 | ||
3826 | /* We conservatively put out stubs for all other cases (including | |
3827 | writebacks). */ | |
3828 | return TRUE; | |
3829 | } | |
3830 | ||
3831 | return FALSE; | |
3832 | } | |
3833 | ||
520c7b56 JW |
3834 | /* Used to order a list of mapping symbols by address. */ |
3835 | ||
3836 | static int | |
3837 | elf_aarch64_compare_mapping (const void *a, const void *b) | |
3838 | { | |
3839 | const elf_aarch64_section_map *amap = (const elf_aarch64_section_map *) a; | |
3840 | const elf_aarch64_section_map *bmap = (const elf_aarch64_section_map *) b; | |
3841 | ||
3842 | if (amap->vma > bmap->vma) | |
3843 | return 1; | |
3844 | else if (amap->vma < bmap->vma) | |
3845 | return -1; | |
3846 | else if (amap->type > bmap->type) | |
3847 | /* Ensure results do not depend on the host qsort for objects with | |
3848 | multiple mapping symbols at the same address by sorting on type | |
3849 | after vma. */ | |
3850 | return 1; | |
3851 | else if (amap->type < bmap->type) | |
3852 | return -1; | |
3853 | else | |
3854 | return 0; | |
3855 | } | |
3856 | ||
2144188d | 3857 | |
35fee8b7 MS |
3858 | static char * |
3859 | _bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes) | |
3860 | { | |
3861 | char *stub_name = (char *) bfd_malloc | |
3862 | (strlen ("__erratum_835769_veneer_") + 16); | |
bb69498c NC |
3863 | if (stub_name != NULL) |
3864 | sprintf (stub_name,"__erratum_835769_veneer_%d", num_fixes); | |
35fee8b7 MS |
3865 | return stub_name; |
3866 | } | |
3867 | ||
4106101c | 3868 | /* Scan for Cortex-A53 erratum 835769 sequence. |
2144188d MS |
3869 | |
3870 | Return TRUE else FALSE on abnormal termination. */ | |
3871 | ||
68fcca92 | 3872 | static bfd_boolean |
5421cc6e MS |
3873 | _bfd_aarch64_erratum_835769_scan (bfd *input_bfd, |
3874 | struct bfd_link_info *info, | |
3875 | unsigned int *num_fixes_p) | |
68fcca92 JW |
3876 | { |
3877 | asection *section; | |
3878 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
68fcca92 | 3879 | unsigned int num_fixes = *num_fixes_p; |
68fcca92 JW |
3880 | |
3881 | if (htab == NULL) | |
2144188d | 3882 | return TRUE; |
68fcca92 JW |
3883 | |
3884 | for (section = input_bfd->sections; | |
3885 | section != NULL; | |
3886 | section = section->next) | |
3887 | { | |
3888 | bfd_byte *contents = NULL; | |
3889 | struct _aarch64_elf_section_data *sec_data; | |
3890 | unsigned int span; | |
3891 | ||
3892 | if (elf_section_type (section) != SHT_PROGBITS | |
3893 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
3894 | || (section->flags & SEC_EXCLUDE) != 0 | |
3895 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
3896 | || (section->output_section == bfd_abs_section_ptr)) | |
3897 | continue; | |
3898 | ||
3899 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
3900 | contents = elf_section_data (section)->this_hdr.contents; | |
3901 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
2144188d | 3902 | return FALSE; |
68fcca92 JW |
3903 | |
3904 | sec_data = elf_aarch64_section_data (section); | |
520c7b56 JW |
3905 | |
3906 | qsort (sec_data->map, sec_data->mapcount, | |
3907 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
3908 | ||
68fcca92 JW |
3909 | for (span = 0; span < sec_data->mapcount; span++) |
3910 | { | |
3911 | unsigned int span_start = sec_data->map[span].vma; | |
3912 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
3913 | ? sec_data->map[0].vma + section->size | |
3914 | : sec_data->map[span + 1].vma); | |
3915 | unsigned int i; | |
3916 | char span_type = sec_data->map[span].type; | |
3917 | ||
3918 | if (span_type == 'd') | |
3919 | continue; | |
3920 | ||
3921 | for (i = span_start; i + 4 < span_end; i += 4) | |
3922 | { | |
3923 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
3924 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
3925 | ||
3926 | if (aarch64_erratum_sequence (insn_1, insn_2)) | |
3927 | { | |
5421cc6e | 3928 | struct elf_aarch64_stub_hash_entry *stub_entry; |
35fee8b7 MS |
3929 | char *stub_name = _bfd_aarch64_erratum_835769_stub_name (num_fixes); |
3930 | if (! stub_name) | |
2144188d | 3931 | return FALSE; |
68fcca92 | 3932 | |
5421cc6e MS |
3933 | stub_entry = _bfd_aarch64_add_stub_entry_in_group (stub_name, |
3934 | section, | |
3935 | htab); | |
3936 | if (! stub_entry) | |
3937 | return FALSE; | |
68fcca92 | 3938 | |
5421cc6e MS |
3939 | stub_entry->stub_type = aarch64_stub_erratum_835769_veneer; |
3940 | stub_entry->target_section = section; | |
3941 | stub_entry->target_value = i + 4; | |
3942 | stub_entry->veneered_insn = insn_2; | |
3943 | stub_entry->output_name = stub_name; | |
68fcca92 JW |
3944 | num_fixes++; |
3945 | } | |
3946 | } | |
3947 | } | |
3948 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
3949 | free (contents); | |
3950 | } | |
3951 | ||
357d1523 MS |
3952 | *num_fixes_p = num_fixes; |
3953 | ||
2144188d | 3954 | return TRUE; |
68fcca92 JW |
3955 | } |
3956 | ||
13f622ec | 3957 | |
4106101c MS |
3958 | /* Test if instruction INSN is ADRP. */ |
3959 | ||
3960 | static bfd_boolean | |
3961 | _bfd_aarch64_adrp_p (uint32_t insn) | |
3962 | { | |
9fca35fc | 3963 | return ((insn & AARCH64_ADRP_OP_MASK) == AARCH64_ADRP_OP); |
4106101c MS |
3964 | } |
3965 | ||
3966 | ||
3967 | /* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */ | |
3968 | ||
3969 | static bfd_boolean | |
3970 | _bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1, uint32_t insn_2, | |
3971 | uint32_t insn_3) | |
3972 | { | |
3973 | uint32_t rt; | |
3974 | uint32_t rt2; | |
3975 | bfd_boolean pair; | |
3976 | bfd_boolean load; | |
3977 | ||
3978 | return (aarch64_mem_op_p (insn_2, &rt, &rt2, &pair, &load) | |
3979 | && (!pair | |
3980 | || (pair && !load)) | |
3981 | && AARCH64_LDST_UIMM (insn_3) | |
3982 | && AARCH64_RN (insn_3) == AARCH64_RD (insn_1)); | |
3983 | } | |
3984 | ||
3985 | ||
3986 | /* Test for the presence of Cortex-A53 erratum 843419 instruction sequence. | |
3987 | ||
3988 | Return TRUE if section CONTENTS at offset I contains one of the | |
3989 | erratum 843419 sequences, otherwise return FALSE. If a sequence is | |
3990 | seen set P_VENEER_I to the offset of the final LOAD/STORE | |
3991 | instruction in the sequence. | |
3992 | */ | |
3993 | ||
3994 | static bfd_boolean | |
3995 | _bfd_aarch64_erratum_843419_p (bfd_byte *contents, bfd_vma vma, | |
3996 | bfd_vma i, bfd_vma span_end, | |
3997 | bfd_vma *p_veneer_i) | |
3998 | { | |
3999 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
4000 | ||
4001 | if (!_bfd_aarch64_adrp_p (insn_1)) | |
4002 | return FALSE; | |
4003 | ||
4004 | if (span_end < i + 12) | |
4005 | return FALSE; | |
4006 | ||
4007 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
4008 | uint32_t insn_3 = bfd_getl32 (contents + i + 8); | |
4009 | ||
4010 | if ((vma & 0xfff) != 0xff8 && (vma & 0xfff) != 0xffc) | |
4011 | return FALSE; | |
4012 | ||
4013 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_3)) | |
4014 | { | |
4015 | *p_veneer_i = i + 8; | |
4016 | return TRUE; | |
4017 | } | |
4018 | ||
4019 | if (span_end < i + 16) | |
4020 | return FALSE; | |
4021 | ||
4022 | uint32_t insn_4 = bfd_getl32 (contents + i + 12); | |
4023 | ||
4024 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_4)) | |
4025 | { | |
4026 | *p_veneer_i = i + 12; | |
4027 | return TRUE; | |
4028 | } | |
4029 | ||
4030 | return FALSE; | |
4031 | } | |
4032 | ||
4033 | ||
13f622ec MS |
4034 | /* Resize all stub sections. */ |
4035 | ||
4036 | static void | |
4037 | _bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table *htab) | |
4038 | { | |
4039 | asection *section; | |
4040 | ||
4041 | /* OK, we've added some stubs. Find out the new size of the | |
4042 | stub sections. */ | |
4043 | for (section = htab->stub_bfd->sections; | |
4044 | section != NULL; section = section->next) | |
4045 | { | |
4046 | /* Ignore non-stub sections. */ | |
4047 | if (!strstr (section->name, STUB_SUFFIX)) | |
4048 | continue; | |
4049 | section->size = 0; | |
4050 | } | |
4051 | ||
4052 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab); | |
13f622ec | 4053 | |
61865519 MS |
4054 | for (section = htab->stub_bfd->sections; |
4055 | section != NULL; section = section->next) | |
4056 | { | |
4057 | if (!strstr (section->name, STUB_SUFFIX)) | |
4058 | continue; | |
4059 | ||
9a2ebffd JW |
4060 | /* Add space for a branch. Add 8 bytes to keep section 8 byte aligned, |
4061 | as long branch stubs contain a 64-bit address. */ | |
61865519 | 4062 | if (section->size) |
9a2ebffd | 4063 | section->size += 8; |
4106101c MS |
4064 | |
4065 | /* Ensure all stub sections have a size which is a multiple of | |
4066 | 4096. This is important in order to ensure that the insertion | |
4067 | of stub sections does not in itself move existing code around | |
739b5c9c TC |
4068 | in such a way that new errata sequences are created. We only do this |
4069 | when the ADRP workaround is enabled. If only the ADR workaround is | |
4070 | enabled then the stubs workaround won't ever be used. */ | |
4071 | if (htab->fix_erratum_843419 & ERRAT_ADRP) | |
4106101c MS |
4072 | if (section->size) |
4073 | section->size = BFD_ALIGN (section->size, 0x1000); | |
4074 | } | |
4075 | } | |
4076 | ||
9a2ebffd | 4077 | /* Construct an erratum 843419 workaround stub name. */ |
4106101c MS |
4078 | |
4079 | static char * | |
4080 | _bfd_aarch64_erratum_843419_stub_name (asection *input_section, | |
4081 | bfd_vma offset) | |
4082 | { | |
4083 | const bfd_size_type len = 8 + 4 + 1 + 8 + 1 + 16 + 1; | |
4084 | char *stub_name = bfd_malloc (len); | |
4085 | ||
4086 | if (stub_name != NULL) | |
4087 | snprintf (stub_name, len, "e843419@%04x_%08x_%" BFD_VMA_FMT "x", | |
4088 | input_section->owner->id, | |
4089 | input_section->id, | |
4090 | offset); | |
4091 | return stub_name; | |
4092 | } | |
4093 | ||
4094 | /* Build a stub_entry structure describing an 843419 fixup. | |
4095 | ||
4096 | The stub_entry constructed is populated with the bit pattern INSN | |
4097 | of the instruction located at OFFSET within input SECTION. | |
4098 | ||
4099 | Returns TRUE on success. */ | |
4100 | ||
4101 | static bfd_boolean | |
4102 | _bfd_aarch64_erratum_843419_fixup (uint32_t insn, | |
4103 | bfd_vma adrp_offset, | |
4104 | bfd_vma ldst_offset, | |
4105 | asection *section, | |
4106 | struct bfd_link_info *info) | |
4107 | { | |
4108 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
4109 | char *stub_name; | |
4110 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
4111 | ||
4112 | stub_name = _bfd_aarch64_erratum_843419_stub_name (section, ldst_offset); | |
bb69498c NC |
4113 | if (stub_name == NULL) |
4114 | return FALSE; | |
4106101c MS |
4115 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, |
4116 | FALSE, FALSE); | |
4117 | if (stub_entry) | |
4118 | { | |
4119 | free (stub_name); | |
4120 | return TRUE; | |
4121 | } | |
4122 | ||
4123 | /* We always place an 843419 workaround veneer in the stub section | |
4124 | attached to the input section in which an erratum sequence has | |
4125 | been found. This ensures that later in the link process (in | |
4126 | elfNN_aarch64_write_section) when we copy the veneered | |
4127 | instruction from the input section into the stub section the | |
4128 | copied instruction will have had any relocations applied to it. | |
4129 | If we placed workaround veneers in any other stub section then we | |
4130 | could not assume that all relocations have been processed on the | |
4131 | corresponding input section at the point we output the stub | |
bb69498c | 4132 | section. */ |
4106101c MS |
4133 | |
4134 | stub_entry = _bfd_aarch64_add_stub_entry_after (stub_name, section, htab); | |
4135 | if (stub_entry == NULL) | |
4136 | { | |
4137 | free (stub_name); | |
4138 | return FALSE; | |
4139 | } | |
4140 | ||
4141 | stub_entry->adrp_offset = adrp_offset; | |
4142 | stub_entry->target_value = ldst_offset; | |
4143 | stub_entry->target_section = section; | |
4144 | stub_entry->stub_type = aarch64_stub_erratum_843419_veneer; | |
4145 | stub_entry->veneered_insn = insn; | |
4146 | stub_entry->output_name = stub_name; | |
4147 | ||
4148 | return TRUE; | |
4149 | } | |
4150 | ||
4151 | ||
4152 | /* Scan an input section looking for the signature of erratum 843419. | |
4153 | ||
4154 | Scans input SECTION in INPUT_BFD looking for erratum 843419 | |
4155 | signatures, for each signature found a stub_entry is created | |
4156 | describing the location of the erratum for subsequent fixup. | |
4157 | ||
4158 | Return TRUE on successful scan, FALSE on failure to scan. | |
4159 | */ | |
4160 | ||
4161 | static bfd_boolean | |
4162 | _bfd_aarch64_erratum_843419_scan (bfd *input_bfd, asection *section, | |
4163 | struct bfd_link_info *info) | |
4164 | { | |
4165 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
4166 | ||
4167 | if (htab == NULL) | |
4168 | return TRUE; | |
4169 | ||
4170 | if (elf_section_type (section) != SHT_PROGBITS | |
4171 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
4172 | || (section->flags & SEC_EXCLUDE) != 0 | |
4173 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
4174 | || (section->output_section == bfd_abs_section_ptr)) | |
4175 | return TRUE; | |
4176 | ||
4177 | do | |
4178 | { | |
4179 | bfd_byte *contents = NULL; | |
4180 | struct _aarch64_elf_section_data *sec_data; | |
4181 | unsigned int span; | |
4182 | ||
4183 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
4184 | contents = elf_section_data (section)->this_hdr.contents; | |
4185 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
4186 | return FALSE; | |
4187 | ||
4188 | sec_data = elf_aarch64_section_data (section); | |
4189 | ||
4190 | qsort (sec_data->map, sec_data->mapcount, | |
4191 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
4192 | ||
4193 | for (span = 0; span < sec_data->mapcount; span++) | |
4194 | { | |
4195 | unsigned int span_start = sec_data->map[span].vma; | |
4196 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
4197 | ? sec_data->map[0].vma + section->size | |
4198 | : sec_data->map[span + 1].vma); | |
4199 | unsigned int i; | |
4200 | char span_type = sec_data->map[span].type; | |
4201 | ||
4202 | if (span_type == 'd') | |
4203 | continue; | |
4204 | ||
4205 | for (i = span_start; i + 8 < span_end; i += 4) | |
4206 | { | |
4207 | bfd_vma vma = (section->output_section->vma | |
4208 | + section->output_offset | |
4209 | + i); | |
4210 | bfd_vma veneer_i; | |
4211 | ||
4212 | if (_bfd_aarch64_erratum_843419_p | |
4213 | (contents, vma, i, span_end, &veneer_i)) | |
4214 | { | |
4215 | uint32_t insn = bfd_getl32 (contents + veneer_i); | |
4216 | ||
4217 | if (!_bfd_aarch64_erratum_843419_fixup (insn, i, veneer_i, | |
4218 | section, info)) | |
4219 | return FALSE; | |
4220 | } | |
4221 | } | |
4222 | } | |
4223 | ||
4224 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
4225 | free (contents); | |
61865519 | 4226 | } |
4106101c MS |
4227 | while (0); |
4228 | ||
4229 | return TRUE; | |
61865519 | 4230 | } |
13f622ec | 4231 | |
4106101c | 4232 | |
a06ea964 NC |
4233 | /* Determine and set the size of the stub section for a final link. |
4234 | ||
4235 | The basic idea here is to examine all the relocations looking for | |
4236 | PC-relative calls to a target that is unreachable with a "bl" | |
4237 | instruction. */ | |
4238 | ||
4239 | bfd_boolean | |
cec5225b | 4240 | elfNN_aarch64_size_stubs (bfd *output_bfd, |
a06ea964 NC |
4241 | bfd *stub_bfd, |
4242 | struct bfd_link_info *info, | |
4243 | bfd_signed_vma group_size, | |
4244 | asection * (*add_stub_section) (const char *, | |
4245 | asection *), | |
4246 | void (*layout_sections_again) (void)) | |
4247 | { | |
4248 | bfd_size_type stub_group_size; | |
4249 | bfd_boolean stubs_always_before_branch; | |
5421cc6e | 4250 | bfd_boolean stub_changed = FALSE; |
cec5225b | 4251 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); |
68fcca92 | 4252 | unsigned int num_erratum_835769_fixes = 0; |
a06ea964 NC |
4253 | |
4254 | /* Propagate mach to stub bfd, because it may not have been | |
4255 | finalized when we created stub_bfd. */ | |
4256 | bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd), | |
4257 | bfd_get_mach (output_bfd)); | |
4258 | ||
4259 | /* Stash our params away. */ | |
4260 | htab->stub_bfd = stub_bfd; | |
4261 | htab->add_stub_section = add_stub_section; | |
4262 | htab->layout_sections_again = layout_sections_again; | |
4263 | stubs_always_before_branch = group_size < 0; | |
4264 | if (group_size < 0) | |
4265 | stub_group_size = -group_size; | |
4266 | else | |
4267 | stub_group_size = group_size; | |
4268 | ||
4269 | if (stub_group_size == 1) | |
4270 | { | |
4271 | /* Default values. */ | |
b9eead84 | 4272 | /* AArch64 branch range is +-128MB. The value used is 1MB less. */ |
a06ea964 NC |
4273 | stub_group_size = 127 * 1024 * 1024; |
4274 | } | |
4275 | ||
4276 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
4277 | ||
4106101c MS |
4278 | (*htab->layout_sections_again) (); |
4279 | ||
5421cc6e MS |
4280 | if (htab->fix_erratum_835769) |
4281 | { | |
4282 | bfd *input_bfd; | |
4283 | ||
4284 | for (input_bfd = info->input_bfds; | |
4285 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
4286 | if (!_bfd_aarch64_erratum_835769_scan (input_bfd, info, | |
4287 | &num_erratum_835769_fixes)) | |
4288 | return FALSE; | |
4289 | ||
4106101c MS |
4290 | _bfd_aarch64_resize_stubs (htab); |
4291 | (*htab->layout_sections_again) (); | |
4292 | } | |
4293 | ||
739b5c9c | 4294 | if (htab->fix_erratum_843419 != ERRAT_NONE) |
4106101c MS |
4295 | { |
4296 | bfd *input_bfd; | |
4297 | ||
4298 | for (input_bfd = info->input_bfds; | |
4299 | input_bfd != NULL; | |
4300 | input_bfd = input_bfd->link.next) | |
4301 | { | |
4302 | asection *section; | |
4303 | ||
4304 | for (section = input_bfd->sections; | |
4305 | section != NULL; | |
4306 | section = section->next) | |
4307 | if (!_bfd_aarch64_erratum_843419_scan (input_bfd, section, info)) | |
4308 | return FALSE; | |
4309 | } | |
4310 | ||
4311 | _bfd_aarch64_resize_stubs (htab); | |
4312 | (*htab->layout_sections_again) (); | |
5421cc6e MS |
4313 | } |
4314 | ||
a06ea964 NC |
4315 | while (1) |
4316 | { | |
4317 | bfd *input_bfd; | |
a06ea964 | 4318 | |
9b9971aa MS |
4319 | for (input_bfd = info->input_bfds; |
4320 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
a06ea964 NC |
4321 | { |
4322 | Elf_Internal_Shdr *symtab_hdr; | |
4323 | asection *section; | |
4324 | Elf_Internal_Sym *local_syms = NULL; | |
4325 | ||
4326 | /* We'll need the symbol table in a second. */ | |
4327 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
4328 | if (symtab_hdr->sh_info == 0) | |
4329 | continue; | |
4330 | ||
4331 | /* Walk over each section attached to the input bfd. */ | |
4332 | for (section = input_bfd->sections; | |
4333 | section != NULL; section = section->next) | |
4334 | { | |
4335 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
4336 | ||
4337 | /* If there aren't any relocs, then there's nothing more | |
4338 | to do. */ | |
4339 | if ((section->flags & SEC_RELOC) == 0 | |
4340 | || section->reloc_count == 0 | |
4341 | || (section->flags & SEC_CODE) == 0) | |
4342 | continue; | |
4343 | ||
4344 | /* If this section is a link-once section that will be | |
4345 | discarded, then don't create any stubs. */ | |
4346 | if (section->output_section == NULL | |
4347 | || section->output_section->owner != output_bfd) | |
4348 | continue; | |
4349 | ||
4350 | /* Get the relocs. */ | |
4351 | internal_relocs | |
4352 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, | |
4353 | NULL, info->keep_memory); | |
4354 | if (internal_relocs == NULL) | |
4355 | goto error_ret_free_local; | |
4356 | ||
4357 | /* Now examine each relocation. */ | |
4358 | irela = internal_relocs; | |
4359 | irelaend = irela + section->reloc_count; | |
4360 | for (; irela < irelaend; irela++) | |
4361 | { | |
4362 | unsigned int r_type, r_indx; | |
cec5225b YZ |
4363 | enum elf_aarch64_stub_type stub_type; |
4364 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
a06ea964 NC |
4365 | asection *sym_sec; |
4366 | bfd_vma sym_value; | |
4367 | bfd_vma destination; | |
cec5225b | 4368 | struct elf_aarch64_link_hash_entry *hash; |
a06ea964 NC |
4369 | const char *sym_name; |
4370 | char *stub_name; | |
4371 | const asection *id_sec; | |
4372 | unsigned char st_type; | |
4373 | bfd_size_type len; | |
4374 | ||
cec5225b YZ |
4375 | r_type = ELFNN_R_TYPE (irela->r_info); |
4376 | r_indx = ELFNN_R_SYM (irela->r_info); | |
a06ea964 NC |
4377 | |
4378 | if (r_type >= (unsigned int) R_AARCH64_end) | |
4379 | { | |
4380 | bfd_set_error (bfd_error_bad_value); | |
4381 | error_ret_free_internal: | |
4382 | if (elf_section_data (section)->relocs == NULL) | |
4383 | free (internal_relocs); | |
4384 | goto error_ret_free_local; | |
4385 | } | |
4386 | ||
4387 | /* Only look for stubs on unconditional branch and | |
4388 | branch and link instructions. */ | |
a6bb11b2 YZ |
4389 | if (r_type != (unsigned int) AARCH64_R (CALL26) |
4390 | && r_type != (unsigned int) AARCH64_R (JUMP26)) | |
a06ea964 NC |
4391 | continue; |
4392 | ||
4393 | /* Now determine the call target, its name, value, | |
4394 | section. */ | |
4395 | sym_sec = NULL; | |
4396 | sym_value = 0; | |
4397 | destination = 0; | |
4398 | hash = NULL; | |
4399 | sym_name = NULL; | |
4400 | if (r_indx < symtab_hdr->sh_info) | |
4401 | { | |
4402 | /* It's a local symbol. */ | |
4403 | Elf_Internal_Sym *sym; | |
4404 | Elf_Internal_Shdr *hdr; | |
4405 | ||
4406 | if (local_syms == NULL) | |
4407 | { | |
4408 | local_syms | |
4409 | = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4410 | if (local_syms == NULL) | |
4411 | local_syms | |
4412 | = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
4413 | symtab_hdr->sh_info, 0, | |
4414 | NULL, NULL, NULL); | |
4415 | if (local_syms == NULL) | |
4416 | goto error_ret_free_internal; | |
4417 | } | |
4418 | ||
4419 | sym = local_syms + r_indx; | |
4420 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
4421 | sym_sec = hdr->bfd_section; | |
4422 | if (!sym_sec) | |
4423 | /* This is an undefined symbol. It can never | |
4424 | be resolved. */ | |
4425 | continue; | |
4426 | ||
4427 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
4428 | sym_value = sym->st_value; | |
4429 | destination = (sym_value + irela->r_addend | |
4430 | + sym_sec->output_offset | |
4431 | + sym_sec->output_section->vma); | |
4432 | st_type = ELF_ST_TYPE (sym->st_info); | |
4433 | sym_name | |
4434 | = bfd_elf_string_from_elf_section (input_bfd, | |
4435 | symtab_hdr->sh_link, | |
4436 | sym->st_name); | |
4437 | } | |
4438 | else | |
4439 | { | |
4440 | int e_indx; | |
4441 | ||
4442 | e_indx = r_indx - symtab_hdr->sh_info; | |
cec5225b | 4443 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
4444 | elf_sym_hashes (input_bfd)[e_indx]); |
4445 | ||
4446 | while (hash->root.root.type == bfd_link_hash_indirect | |
4447 | || hash->root.root.type == bfd_link_hash_warning) | |
cec5225b | 4448 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
4449 | hash->root.root.u.i.link); |
4450 | ||
4451 | if (hash->root.root.type == bfd_link_hash_defined | |
4452 | || hash->root.root.type == bfd_link_hash_defweak) | |
4453 | { | |
cec5225b YZ |
4454 | struct elf_aarch64_link_hash_table *globals = |
4455 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
4456 | sym_sec = hash->root.root.u.def.section; |
4457 | sym_value = hash->root.root.u.def.value; | |
4458 | /* For a destination in a shared library, | |
4459 | use the PLT stub as target address to | |
4460 | decide whether a branch stub is | |
4461 | needed. */ | |
4462 | if (globals->root.splt != NULL && hash != NULL | |
4463 | && hash->root.plt.offset != (bfd_vma) - 1) | |
4464 | { | |
4465 | sym_sec = globals->root.splt; | |
4466 | sym_value = hash->root.plt.offset; | |
4467 | if (sym_sec->output_section != NULL) | |
4468 | destination = (sym_value | |
4469 | + sym_sec->output_offset | |
4470 | + | |
4471 | sym_sec->output_section->vma); | |
4472 | } | |
4473 | else if (sym_sec->output_section != NULL) | |
4474 | destination = (sym_value + irela->r_addend | |
4475 | + sym_sec->output_offset | |
4476 | + sym_sec->output_section->vma); | |
4477 | } | |
4478 | else if (hash->root.root.type == bfd_link_hash_undefined | |
4479 | || (hash->root.root.type | |
4480 | == bfd_link_hash_undefweak)) | |
4481 | { | |
4482 | /* For a shared library, use the PLT stub as | |
4483 | target address to decide whether a long | |
4484 | branch stub is needed. | |
4485 | For absolute code, they cannot be handled. */ | |
cec5225b YZ |
4486 | struct elf_aarch64_link_hash_table *globals = |
4487 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
4488 | |
4489 | if (globals->root.splt != NULL && hash != NULL | |
4490 | && hash->root.plt.offset != (bfd_vma) - 1) | |
4491 | { | |
4492 | sym_sec = globals->root.splt; | |
4493 | sym_value = hash->root.plt.offset; | |
4494 | if (sym_sec->output_section != NULL) | |
4495 | destination = (sym_value | |
4496 | + sym_sec->output_offset | |
4497 | + | |
4498 | sym_sec->output_section->vma); | |
4499 | } | |
4500 | else | |
4501 | continue; | |
4502 | } | |
4503 | else | |
4504 | { | |
4505 | bfd_set_error (bfd_error_bad_value); | |
4506 | goto error_ret_free_internal; | |
4507 | } | |
4508 | st_type = ELF_ST_TYPE (hash->root.type); | |
4509 | sym_name = hash->root.root.root.string; | |
4510 | } | |
4511 | ||
4512 | /* Determine what (if any) linker stub is needed. */ | |
9a228467 JW |
4513 | stub_type = aarch64_type_of_stub (section, irela, sym_sec, |
4514 | st_type, destination); | |
a06ea964 NC |
4515 | if (stub_type == aarch64_stub_none) |
4516 | continue; | |
4517 | ||
4518 | /* Support for grouping stub sections. */ | |
4519 | id_sec = htab->stub_group[section->id].link_sec; | |
4520 | ||
4521 | /* Get the name of this stub. */ | |
cec5225b | 4522 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, hash, |
a06ea964 NC |
4523 | irela); |
4524 | if (!stub_name) | |
4525 | goto error_ret_free_internal; | |
4526 | ||
4527 | stub_entry = | |
4528 | aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
4529 | stub_name, FALSE, FALSE); | |
4530 | if (stub_entry != NULL) | |
4531 | { | |
4532 | /* The proper stub has already been created. */ | |
4533 | free (stub_name); | |
3da64fe4 RA |
4534 | /* Always update this stub's target since it may have |
4535 | changed after layout. */ | |
4536 | stub_entry->target_value = sym_value + irela->r_addend; | |
a06ea964 NC |
4537 | continue; |
4538 | } | |
4539 | ||
ef857521 MS |
4540 | stub_entry = _bfd_aarch64_add_stub_entry_in_group |
4541 | (stub_name, section, htab); | |
a06ea964 NC |
4542 | if (stub_entry == NULL) |
4543 | { | |
4544 | free (stub_name); | |
4545 | goto error_ret_free_internal; | |
4546 | } | |
4547 | ||
2f340668 | 4548 | stub_entry->target_value = sym_value + irela->r_addend; |
a06ea964 NC |
4549 | stub_entry->target_section = sym_sec; |
4550 | stub_entry->stub_type = stub_type; | |
4551 | stub_entry->h = hash; | |
4552 | stub_entry->st_type = st_type; | |
4553 | ||
4554 | if (sym_name == NULL) | |
4555 | sym_name = "unnamed"; | |
4556 | len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name); | |
4557 | stub_entry->output_name = bfd_alloc (htab->stub_bfd, len); | |
4558 | if (stub_entry->output_name == NULL) | |
4559 | { | |
4560 | free (stub_name); | |
4561 | goto error_ret_free_internal; | |
4562 | } | |
4563 | ||
4564 | snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME, | |
4565 | sym_name); | |
4566 | ||
4567 | stub_changed = TRUE; | |
4568 | } | |
4569 | ||
4570 | /* We're done with the internal relocs, free them. */ | |
4571 | if (elf_section_data (section)->relocs == NULL) | |
4572 | free (internal_relocs); | |
4573 | } | |
4574 | } | |
4575 | ||
4576 | if (!stub_changed) | |
4577 | break; | |
4578 | ||
13f622ec | 4579 | _bfd_aarch64_resize_stubs (htab); |
a06ea964 NC |
4580 | |
4581 | /* Ask the linker to do its stuff. */ | |
4582 | (*htab->layout_sections_again) (); | |
4583 | stub_changed = FALSE; | |
4584 | } | |
4585 | ||
4586 | return TRUE; | |
4587 | ||
4588 | error_ret_free_local: | |
4589 | return FALSE; | |
4590 | } | |
4591 | ||
4592 | /* Build all the stubs associated with the current output file. The | |
4593 | stubs are kept in a hash table attached to the main linker hash | |
4594 | table. We also set up the .plt entries for statically linked PIC | |
4595 | functions here. This function is called via aarch64_elf_finish in the | |
4596 | linker. */ | |
4597 | ||
4598 | bfd_boolean | |
cec5225b | 4599 | elfNN_aarch64_build_stubs (struct bfd_link_info *info) |
a06ea964 NC |
4600 | { |
4601 | asection *stub_sec; | |
4602 | struct bfd_hash_table *table; | |
cec5225b | 4603 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 4604 | |
cec5225b | 4605 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
4606 | |
4607 | for (stub_sec = htab->stub_bfd->sections; | |
4608 | stub_sec != NULL; stub_sec = stub_sec->next) | |
4609 | { | |
4610 | bfd_size_type size; | |
4611 | ||
4612 | /* Ignore non-stub sections. */ | |
4613 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
4614 | continue; | |
4615 | ||
4616 | /* Allocate memory to hold the linker stubs. */ | |
4617 | size = stub_sec->size; | |
4618 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); | |
4619 | if (stub_sec->contents == NULL && size != 0) | |
4620 | return FALSE; | |
4621 | stub_sec->size = 0; | |
61865519 | 4622 | |
9a2ebffd JW |
4623 | /* Add a branch around the stub section, and a nop, to keep it 8 byte |
4624 | aligned, as long branch stubs contain a 64-bit address. */ | |
61865519 | 4625 | bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents); |
9a2ebffd JW |
4626 | bfd_putl32 (INSN_NOP, stub_sec->contents + 4); |
4627 | stub_sec->size += 8; | |
a06ea964 NC |
4628 | } |
4629 | ||
4630 | /* Build the stubs as directed by the stub hash table. */ | |
4631 | table = &htab->stub_hash_table; | |
4632 | bfd_hash_traverse (table, aarch64_build_one_stub, info); | |
4633 | ||
4634 | return TRUE; | |
4635 | } | |
4636 | ||
4637 | ||
4638 | /* Add an entry to the code/data map for section SEC. */ | |
4639 | ||
4640 | static void | |
cec5225b | 4641 | elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma) |
a06ea964 NC |
4642 | { |
4643 | struct _aarch64_elf_section_data *sec_data = | |
cec5225b | 4644 | elf_aarch64_section_data (sec); |
a06ea964 NC |
4645 | unsigned int newidx; |
4646 | ||
4647 | if (sec_data->map == NULL) | |
4648 | { | |
cec5225b | 4649 | sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
4650 | sec_data->mapcount = 0; |
4651 | sec_data->mapsize = 1; | |
4652 | } | |
4653 | ||
4654 | newidx = sec_data->mapcount++; | |
4655 | ||
4656 | if (sec_data->mapcount > sec_data->mapsize) | |
4657 | { | |
4658 | sec_data->mapsize *= 2; | |
4659 | sec_data->map = bfd_realloc_or_free | |
cec5225b | 4660 | (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
4661 | } |
4662 | ||
4663 | if (sec_data->map) | |
4664 | { | |
4665 | sec_data->map[newidx].vma = vma; | |
4666 | sec_data->map[newidx].type = type; | |
4667 | } | |
4668 | } | |
4669 | ||
4670 | ||
4671 | /* Initialise maps of insn/data for input BFDs. */ | |
4672 | void | |
cec5225b | 4673 | bfd_elfNN_aarch64_init_maps (bfd *abfd) |
a06ea964 NC |
4674 | { |
4675 | Elf_Internal_Sym *isymbuf; | |
4676 | Elf_Internal_Shdr *hdr; | |
4677 | unsigned int i, localsyms; | |
4678 | ||
4679 | /* Make sure that we are dealing with an AArch64 elf binary. */ | |
4680 | if (!is_aarch64_elf (abfd)) | |
4681 | return; | |
4682 | ||
4683 | if ((abfd->flags & DYNAMIC) != 0) | |
68fcca92 | 4684 | return; |
a06ea964 NC |
4685 | |
4686 | hdr = &elf_symtab_hdr (abfd); | |
4687 | localsyms = hdr->sh_info; | |
4688 | ||
4689 | /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field | |
4690 | should contain the number of local symbols, which should come before any | |
4691 | global symbols. Mapping symbols are always local. */ | |
4692 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL); | |
4693 | ||
4694 | /* No internal symbols read? Skip this BFD. */ | |
4695 | if (isymbuf == NULL) | |
4696 | return; | |
4697 | ||
4698 | for (i = 0; i < localsyms; i++) | |
4699 | { | |
4700 | Elf_Internal_Sym *isym = &isymbuf[i]; | |
4701 | asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4702 | const char *name; | |
4703 | ||
4704 | if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL) | |
4705 | { | |
4706 | name = bfd_elf_string_from_elf_section (abfd, | |
4707 | hdr->sh_link, | |
4708 | isym->st_name); | |
4709 | ||
4710 | if (bfd_is_aarch64_special_symbol_name | |
4711 | (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP)) | |
cec5225b | 4712 | elfNN_aarch64_section_map_add (sec, name[1], isym->st_value); |
a06ea964 NC |
4713 | } |
4714 | } | |
4715 | } | |
4716 | ||
37c18eed SD |
4717 | static void |
4718 | setup_plt_values (struct bfd_link_info *link_info, | |
4719 | aarch64_plt_type plt_type) | |
4720 | { | |
4721 | struct elf_aarch64_link_hash_table *globals; | |
4722 | globals = elf_aarch64_hash_table (link_info); | |
4723 | ||
1dbade74 SD |
4724 | if (plt_type == PLT_BTI_PAC) |
4725 | { | |
68bb0359 | 4726 | globals->plt0_entry = elfNN_aarch64_small_plt0_bti_entry; |
1dbade74 SD |
4727 | |
4728 | /* Only in ET_EXEC we need PLTn with BTI. */ | |
4729 | if (bfd_link_pde (link_info)) | |
4730 | { | |
4731 | globals->plt_entry_size = PLT_BTI_PAC_SMALL_ENTRY_SIZE; | |
4732 | globals->plt_entry = elfNN_aarch64_small_plt_bti_pac_entry; | |
4733 | } | |
4734 | else | |
4735 | { | |
4736 | globals->plt_entry_size = PLT_PAC_SMALL_ENTRY_SIZE; | |
4737 | globals->plt_entry = elfNN_aarch64_small_plt_pac_entry; | |
4738 | } | |
4739 | } | |
4740 | else if (plt_type == PLT_BTI) | |
37c18eed | 4741 | { |
37c18eed | 4742 | globals->plt0_entry = elfNN_aarch64_small_plt0_bti_entry; |
37c18eed SD |
4743 | |
4744 | /* Only in ET_EXEC we need PLTn with BTI. */ | |
4745 | if (bfd_link_pde (link_info)) | |
4746 | { | |
4747 | globals->plt_entry_size = PLT_BTI_SMALL_ENTRY_SIZE; | |
4748 | globals->plt_entry = elfNN_aarch64_small_plt_bti_entry; | |
4749 | } | |
4750 | } | |
1dbade74 SD |
4751 | else if (plt_type == PLT_PAC) |
4752 | { | |
1dbade74 SD |
4753 | globals->plt_entry_size = PLT_PAC_SMALL_ENTRY_SIZE; |
4754 | globals->plt_entry = elfNN_aarch64_small_plt_pac_entry; | |
4755 | } | |
37c18eed SD |
4756 | } |
4757 | ||
a06ea964 NC |
4758 | /* Set option values needed during linking. */ |
4759 | void | |
cec5225b | 4760 | bfd_elfNN_aarch64_set_options (struct bfd *output_bfd, |
a06ea964 NC |
4761 | struct bfd_link_info *link_info, |
4762 | int no_enum_warn, | |
68fcca92 | 4763 | int no_wchar_warn, int pic_veneer, |
4106101c | 4764 | int fix_erratum_835769, |
739b5c9c | 4765 | erratum_84319_opts fix_erratum_843419, |
37c18eed SD |
4766 | int no_apply_dynamic_relocs, |
4767 | aarch64_bti_pac_info bp_info) | |
a06ea964 | 4768 | { |
cec5225b | 4769 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 4770 | |
cec5225b | 4771 | globals = elf_aarch64_hash_table (link_info); |
a06ea964 | 4772 | globals->pic_veneer = pic_veneer; |
68fcca92 | 4773 | globals->fix_erratum_835769 = fix_erratum_835769; |
739b5c9c TC |
4774 | /* If the default options are used, then ERRAT_ADR will be set by default |
4775 | which will enable the ADRP->ADR workaround for the erratum 843419 | |
4776 | workaround. */ | |
4106101c | 4777 | globals->fix_erratum_843419 = fix_erratum_843419; |
1f56df9d | 4778 | globals->no_apply_dynamic_relocs = no_apply_dynamic_relocs; |
a06ea964 NC |
4779 | |
4780 | BFD_ASSERT (is_aarch64_elf (output_bfd)); | |
4781 | elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn; | |
4782 | elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn; | |
37c18eed SD |
4783 | |
4784 | switch (bp_info.bti_type) | |
4785 | { | |
4786 | case BTI_WARN: | |
4787 | elf_aarch64_tdata (output_bfd)->no_bti_warn = 0; | |
4788 | elf_aarch64_tdata (output_bfd)->gnu_and_prop | |
4789 | |= GNU_PROPERTY_AARCH64_FEATURE_1_BTI; | |
4790 | break; | |
4791 | ||
4792 | default: | |
4793 | break; | |
4794 | } | |
4795 | elf_aarch64_tdata (output_bfd)->plt_type = bp_info.plt_type; | |
4796 | setup_plt_values (link_info, bp_info.plt_type); | |
a06ea964 NC |
4797 | } |
4798 | ||
a06ea964 NC |
4799 | static bfd_vma |
4800 | aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h, | |
cec5225b | 4801 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
4802 | *globals, struct bfd_link_info *info, |
4803 | bfd_vma value, bfd *output_bfd, | |
4804 | bfd_boolean *unresolved_reloc_p) | |
4805 | { | |
4806 | bfd_vma off = (bfd_vma) - 1; | |
4807 | asection *basegot = globals->root.sgot; | |
4808 | bfd_boolean dyn = globals->root.dynamic_sections_created; | |
4809 | ||
4810 | if (h != NULL) | |
4811 | { | |
a6bb11b2 | 4812 | BFD_ASSERT (basegot != NULL); |
a06ea964 NC |
4813 | off = h->got.offset; |
4814 | BFD_ASSERT (off != (bfd_vma) - 1); | |
0e1862bb L |
4815 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h) |
4816 | || (bfd_link_pic (info) | |
a06ea964 NC |
4817 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
4818 | || (ELF_ST_VISIBILITY (h->other) | |
4819 | && h->root.type == bfd_link_hash_undefweak)) | |
4820 | { | |
4821 | /* This is actually a static link, or it is a -Bsymbolic link | |
4822 | and the symbol is defined locally. We must initialize this | |
4823 | entry in the global offset table. Since the offset must | |
a6bb11b2 YZ |
4824 | always be a multiple of 8 (4 in the case of ILP32), we use |
4825 | the least significant bit to record whether we have | |
4826 | initialized it already. | |
a06ea964 NC |
4827 | When doing a dynamic link, we create a .rel(a).got relocation |
4828 | entry to initialize the value. This is done in the | |
4829 | finish_dynamic_symbol routine. */ | |
4830 | if ((off & 1) != 0) | |
4831 | off &= ~1; | |
4832 | else | |
4833 | { | |
cec5225b | 4834 | bfd_put_NN (output_bfd, value, basegot->contents + off); |
a06ea964 NC |
4835 | h->got.offset |= 1; |
4836 | } | |
4837 | } | |
4838 | else | |
4839 | *unresolved_reloc_p = FALSE; | |
4840 | ||
4841 | off = off + basegot->output_section->vma + basegot->output_offset; | |
4842 | } | |
4843 | ||
4844 | return off; | |
4845 | } | |
4846 | ||
4847 | /* Change R_TYPE to a more efficient access model where possible, | |
4848 | return the new reloc type. */ | |
4849 | ||
a6bb11b2 YZ |
4850 | static bfd_reloc_code_real_type |
4851 | aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type, | |
a06ea964 NC |
4852 | struct elf_link_hash_entry *h) |
4853 | { | |
4854 | bfd_boolean is_local = h == NULL; | |
a6bb11b2 | 4855 | |
a06ea964 NC |
4856 | switch (r_type) |
4857 | { | |
a6bb11b2 | 4858 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 4859 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a6bb11b2 YZ |
4860 | return (is_local |
4861 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4862 | : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21); | |
4863 | ||
389b8029 MS |
4864 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
4865 | return (is_local | |
4866 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4867 | : r_type); | |
4868 | ||
1ada945d MS |
4869 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
4870 | return (is_local | |
4871 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4872 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4873 | ||
0484b454 RL |
4874 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
4875 | return (is_local | |
4876 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4877 | : BFD_RELOC_AARCH64_NONE); | |
4878 | ||
4879 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
4880 | return (is_local | |
4881 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC | |
4882 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC); | |
4883 | ||
4884 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
4885 | return (is_local | |
4886 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 | |
4887 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1); | |
4888 | ||
a6bb11b2 | 4889 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
ce336788 | 4890 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 YZ |
4891 | return (is_local |
4892 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4893 | : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC); | |
4894 | ||
4895 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: | |
4896 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type; | |
4897 | ||
4898 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
4899 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type; | |
4900 | ||
043bf05a MS |
4901 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
4902 | return r_type; | |
4903 | ||
3c12b054 MS |
4904 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
4905 | return (is_local | |
4906 | ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 | |
4907 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4908 | ||
0484b454 | 4909 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
f955cccf | 4910 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 4911 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a06ea964 | 4912 | /* Instructions with these relocations will become NOPs. */ |
a6bb11b2 YZ |
4913 | return BFD_RELOC_AARCH64_NONE; |
4914 | ||
259364ad JW |
4915 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
4916 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: | |
4917 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: | |
4918 | return is_local ? BFD_RELOC_AARCH64_NONE : r_type; | |
4919 | ||
ac734732 RL |
4920 | #if ARCH_SIZE == 64 |
4921 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: | |
4922 | return is_local | |
4923 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC | |
4924 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC; | |
4925 | ||
4926 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: | |
4927 | return is_local | |
4928 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 | |
4929 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1; | |
4930 | #endif | |
4931 | ||
a6bb11b2 YZ |
4932 | default: |
4933 | break; | |
a06ea964 NC |
4934 | } |
4935 | ||
4936 | return r_type; | |
4937 | } | |
4938 | ||
4939 | static unsigned int | |
a6bb11b2 | 4940 | aarch64_reloc_got_type (bfd_reloc_code_real_type r_type) |
a06ea964 NC |
4941 | { |
4942 | switch (r_type) | |
4943 | { | |
a6bb11b2 YZ |
4944 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
4945 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 4946 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 4947 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 4948 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 4949 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 4950 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 4951 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 4952 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
a06ea964 NC |
4953 | return GOT_NORMAL; |
4954 | ||
ce336788 | 4955 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 4956 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 4957 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 4958 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 4959 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
73f925cc | 4960 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 4961 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 4962 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
4963 | return GOT_TLS_GD; |
4964 | ||
0484b454 | 4965 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
f955cccf | 4966 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 4967 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 4968 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 4969 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a6bb11b2 | 4970 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
f955cccf | 4971 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
1ada945d | 4972 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
4973 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
4974 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
4975 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a06ea964 NC |
4976 | return GOT_TLSDESC_GD; |
4977 | ||
a6bb11b2 | 4978 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 4979 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 4980 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 4981 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
4982 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
4983 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
a06ea964 NC |
4984 | return GOT_TLS_IE; |
4985 | ||
a6bb11b2 YZ |
4986 | default: |
4987 | break; | |
a06ea964 NC |
4988 | } |
4989 | return GOT_UNKNOWN; | |
4990 | } | |
4991 | ||
4992 | static bfd_boolean | |
4993 | aarch64_can_relax_tls (bfd *input_bfd, | |
4994 | struct bfd_link_info *info, | |
a6bb11b2 | 4995 | bfd_reloc_code_real_type r_type, |
a06ea964 NC |
4996 | struct elf_link_hash_entry *h, |
4997 | unsigned long r_symndx) | |
4998 | { | |
4999 | unsigned int symbol_got_type; | |
5000 | unsigned int reloc_got_type; | |
5001 | ||
9331eea1 | 5002 | if (! IS_AARCH64_TLS_RELAX_RELOC (r_type)) |
a06ea964 NC |
5003 | return FALSE; |
5004 | ||
cec5225b | 5005 | symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx); |
a06ea964 NC |
5006 | reloc_got_type = aarch64_reloc_got_type (r_type); |
5007 | ||
5008 | if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type)) | |
5009 | return TRUE; | |
5010 | ||
6dda7875 | 5011 | if (!bfd_link_executable (info)) |
a06ea964 NC |
5012 | return FALSE; |
5013 | ||
5014 | if (h && h->root.type == bfd_link_hash_undefweak) | |
5015 | return FALSE; | |
5016 | ||
5017 | return TRUE; | |
5018 | } | |
5019 | ||
a6bb11b2 YZ |
5020 | /* Given the relocation code R_TYPE, return the relaxed bfd reloc |
5021 | enumerator. */ | |
5022 | ||
5023 | static bfd_reloc_code_real_type | |
a06ea964 NC |
5024 | aarch64_tls_transition (bfd *input_bfd, |
5025 | struct bfd_link_info *info, | |
5026 | unsigned int r_type, | |
5027 | struct elf_link_hash_entry *h, | |
5028 | unsigned long r_symndx) | |
5029 | { | |
a6bb11b2 | 5030 | bfd_reloc_code_real_type bfd_r_type |
0aa13fee | 5031 | = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
a06ea964 | 5032 | |
a6bb11b2 YZ |
5033 | if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx)) |
5034 | return bfd_r_type; | |
5035 | ||
5036 | return aarch64_tls_transition_without_check (bfd_r_type, h); | |
a06ea964 NC |
5037 | } |
5038 | ||
5039 | /* Return the base VMA address which should be subtracted from real addresses | |
a6bb11b2 | 5040 | when resolving R_AARCH64_TLS_DTPREL relocation. */ |
a06ea964 NC |
5041 | |
5042 | static bfd_vma | |
5043 | dtpoff_base (struct bfd_link_info *info) | |
5044 | { | |
5045 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
5046 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); | |
5047 | return elf_hash_table (info)->tls_sec->vma; | |
5048 | } | |
5049 | ||
a06ea964 NC |
5050 | /* Return the base VMA address which should be subtracted from real addresses |
5051 | when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */ | |
5052 | ||
5053 | static bfd_vma | |
5054 | tpoff_base (struct bfd_link_info *info) | |
5055 | { | |
5056 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
5057 | ||
5058 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
ac21917f | 5059 | BFD_ASSERT (htab->tls_sec != NULL); |
a06ea964 NC |
5060 | |
5061 | bfd_vma base = align_power ((bfd_vma) TCB_SIZE, | |
5062 | htab->tls_sec->alignment_power); | |
5063 | return htab->tls_sec->vma - base; | |
5064 | } | |
5065 | ||
5066 | static bfd_vma * | |
5067 | symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5068 | unsigned long r_symndx) | |
5069 | { | |
5070 | /* Calculate the address of the GOT entry for symbol | |
5071 | referred to in h. */ | |
5072 | if (h != NULL) | |
5073 | return &h->got.offset; | |
5074 | else | |
5075 | { | |
5076 | /* local symbol */ | |
5077 | struct elf_aarch64_local_symbol *l; | |
5078 | ||
cec5225b | 5079 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
5080 | return &l[r_symndx].got_offset; |
5081 | } | |
5082 | } | |
5083 | ||
5084 | static void | |
5085 | symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5086 | unsigned long r_symndx) | |
5087 | { | |
5088 | bfd_vma *p; | |
5089 | p = symbol_got_offset_ref (input_bfd, h, r_symndx); | |
5090 | *p |= 1; | |
5091 | } | |
5092 | ||
5093 | static int | |
5094 | symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5095 | unsigned long r_symndx) | |
5096 | { | |
5097 | bfd_vma value; | |
5098 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
5099 | return value & 1; | |
5100 | } | |
5101 | ||
5102 | static bfd_vma | |
5103 | symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5104 | unsigned long r_symndx) | |
5105 | { | |
5106 | bfd_vma value; | |
5107 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
5108 | value &= ~1; | |
5109 | return value; | |
5110 | } | |
5111 | ||
5112 | static bfd_vma * | |
5113 | symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5114 | unsigned long r_symndx) | |
5115 | { | |
5116 | /* Calculate the address of the GOT entry for symbol | |
5117 | referred to in h. */ | |
5118 | if (h != NULL) | |
5119 | { | |
cec5225b YZ |
5120 | struct elf_aarch64_link_hash_entry *eh; |
5121 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
5122 | return &eh->tlsdesc_got_jump_table_offset; |
5123 | } | |
5124 | else | |
5125 | { | |
5126 | /* local symbol */ | |
5127 | struct elf_aarch64_local_symbol *l; | |
5128 | ||
cec5225b | 5129 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
5130 | return &l[r_symndx].tlsdesc_got_jump_table_offset; |
5131 | } | |
5132 | } | |
5133 | ||
5134 | static void | |
5135 | symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5136 | unsigned long r_symndx) | |
5137 | { | |
5138 | bfd_vma *p; | |
5139 | p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
5140 | *p |= 1; | |
5141 | } | |
5142 | ||
5143 | static int | |
5144 | symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd, | |
5145 | struct elf_link_hash_entry *h, | |
5146 | unsigned long r_symndx) | |
5147 | { | |
5148 | bfd_vma value; | |
5149 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
5150 | return value & 1; | |
5151 | } | |
5152 | ||
5153 | static bfd_vma | |
5154 | symbol_tlsdesc_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5155 | unsigned long r_symndx) | |
5156 | { | |
5157 | bfd_vma value; | |
5158 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
5159 | value &= ~1; | |
5160 | return value; | |
5161 | } | |
5162 | ||
68fcca92 JW |
5163 | /* Data for make_branch_to_erratum_835769_stub(). */ |
5164 | ||
5165 | struct erratum_835769_branch_to_stub_data | |
5166 | { | |
4106101c | 5167 | struct bfd_link_info *info; |
68fcca92 JW |
5168 | asection *output_section; |
5169 | bfd_byte *contents; | |
5170 | }; | |
5171 | ||
5172 | /* Helper to insert branches to erratum 835769 stubs in the right | |
5173 | places for a particular section. */ | |
5174 | ||
5175 | static bfd_boolean | |
5176 | make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry, | |
5177 | void *in_arg) | |
5178 | { | |
5179 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
5180 | struct erratum_835769_branch_to_stub_data *data; | |
5181 | bfd_byte *contents; | |
5182 | unsigned long branch_insn = 0; | |
5183 | bfd_vma veneered_insn_loc, veneer_entry_loc; | |
5184 | bfd_signed_vma branch_offset; | |
5185 | unsigned int target; | |
5186 | bfd *abfd; | |
5187 | ||
5188 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
5189 | data = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
5190 | ||
5191 | if (stub_entry->target_section != data->output_section | |
5192 | || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer) | |
5193 | return TRUE; | |
5194 | ||
5195 | contents = data->contents; | |
5196 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
5197 | + stub_entry->target_section->output_offset | |
5198 | + stub_entry->target_value; | |
5199 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
5200 | + stub_entry->stub_sec->output_offset | |
5201 | + stub_entry->stub_offset; | |
5202 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
5203 | ||
5204 | abfd = stub_entry->target_section->owner; | |
5205 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4eca0228 | 5206 | _bfd_error_handler |
90b6238f | 5207 | (_("%pB: error: erratum 835769 stub out " |
4eca0228 | 5208 | "of range (input file too large)"), abfd); |
68fcca92 JW |
5209 | |
5210 | target = stub_entry->target_value; | |
5211 | branch_insn = 0x14000000; | |
5212 | branch_offset >>= 2; | |
5213 | branch_offset &= 0x3ffffff; | |
5214 | branch_insn |= branch_offset; | |
5215 | bfd_putl32 (branch_insn, &contents[target]); | |
5216 | ||
5217 | return TRUE; | |
5218 | } | |
5219 | ||
4106101c MS |
5220 | |
5221 | static bfd_boolean | |
5222 | _bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry, | |
5223 | void *in_arg) | |
5224 | { | |
5225 | struct elf_aarch64_stub_hash_entry *stub_entry | |
5226 | = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
5227 | struct erratum_835769_branch_to_stub_data *data | |
5228 | = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
5229 | struct bfd_link_info *info; | |
5230 | struct elf_aarch64_link_hash_table *htab; | |
5231 | bfd_byte *contents; | |
5232 | asection *section; | |
5233 | bfd *abfd; | |
5234 | bfd_vma place; | |
5235 | uint32_t insn; | |
5236 | ||
5237 | info = data->info; | |
5238 | contents = data->contents; | |
5239 | section = data->output_section; | |
5240 | ||
5241 | htab = elf_aarch64_hash_table (info); | |
5242 | ||
5243 | if (stub_entry->target_section != section | |
5244 | || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer) | |
5245 | return TRUE; | |
5246 | ||
739b5c9c TC |
5247 | BFD_ASSERT (((htab->fix_erratum_843419 & ERRAT_ADRP) && stub_entry->stub_sec) |
5248 | || (htab->fix_erratum_843419 & ERRAT_ADR)); | |
5249 | ||
5250 | /* Only update the stub section if we have one. We should always have one if | |
5251 | we're allowed to use the ADRP errata workaround, otherwise it is not | |
5252 | required. */ | |
5253 | if (stub_entry->stub_sec) | |
5254 | { | |
5255 | insn = bfd_getl32 (contents + stub_entry->target_value); | |
5256 | bfd_putl32 (insn, | |
5257 | stub_entry->stub_sec->contents + stub_entry->stub_offset); | |
5258 | } | |
4106101c MS |
5259 | |
5260 | place = (section->output_section->vma + section->output_offset | |
5261 | + stub_entry->adrp_offset); | |
5262 | insn = bfd_getl32 (contents + stub_entry->adrp_offset); | |
5263 | ||
9fca35fc | 5264 | if (!_bfd_aarch64_adrp_p (insn)) |
4106101c MS |
5265 | abort (); |
5266 | ||
5267 | bfd_signed_vma imm = | |
5268 | (_bfd_aarch64_sign_extend | |
5269 | ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33) | |
5270 | - (place & 0xfff)); | |
5271 | ||
739b5c9c | 5272 | if ((htab->fix_erratum_843419 & ERRAT_ADR) |
4106101c MS |
5273 | && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM)) |
5274 | { | |
5275 | insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm) | |
5276 | | AARCH64_RT (insn)); | |
5277 | bfd_putl32 (insn, contents + stub_entry->adrp_offset); | |
739b5c9c TC |
5278 | /* Stub is not needed, don't map it out. */ |
5279 | stub_entry->stub_type = aarch64_stub_none; | |
4106101c | 5280 | } |
739b5c9c | 5281 | else if (htab->fix_erratum_843419 & ERRAT_ADRP) |
4106101c MS |
5282 | { |
5283 | bfd_vma veneered_insn_loc; | |
5284 | bfd_vma veneer_entry_loc; | |
5285 | bfd_signed_vma branch_offset; | |
5286 | uint32_t branch_insn; | |
5287 | ||
5288 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
5289 | + stub_entry->target_section->output_offset | |
5290 | + stub_entry->target_value; | |
5291 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
5292 | + stub_entry->stub_sec->output_offset | |
5293 | + stub_entry->stub_offset; | |
5294 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
5295 | ||
5296 | abfd = stub_entry->target_section->owner; | |
5297 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4eca0228 | 5298 | _bfd_error_handler |
90b6238f | 5299 | (_("%pB: error: erratum 843419 stub out " |
4106101c MS |
5300 | "of range (input file too large)"), abfd); |
5301 | ||
5302 | branch_insn = 0x14000000; | |
5303 | branch_offset >>= 2; | |
5304 | branch_offset &= 0x3ffffff; | |
5305 | branch_insn |= branch_offset; | |
5306 | bfd_putl32 (branch_insn, contents + stub_entry->target_value); | |
5307 | } | |
739b5c9c TC |
5308 | else |
5309 | { | |
5310 | abfd = stub_entry->target_section->owner; | |
5311 | _bfd_error_handler | |
64672071 | 5312 | (_("%pB: error: erratum 843419 immediate 0x%" BFD_VMA_FMT "x " |
739b5c9c TC |
5313 | "out of range for ADR (input file too large) and " |
5314 | "--fix-cortex-a53-843419=adr used. Run the linker with " | |
5315 | "--fix-cortex-a53-843419=full instead"), abfd, imm); | |
5316 | bfd_set_error (bfd_error_bad_value); | |
5317 | /* This function is called inside a hashtable traversal and the error | |
5318 | handlers called above turn into non-fatal errors. Which means this | |
5319 | case ld returns an exit code 0 and also produces a broken object file. | |
5320 | To prevent this, issue a hard abort. */ | |
5321 | BFD_FAIL (); | |
5322 | } | |
4106101c MS |
5323 | return TRUE; |
5324 | } | |
5325 | ||
5326 | ||
68fcca92 JW |
5327 | static bfd_boolean |
5328 | elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, | |
5329 | struct bfd_link_info *link_info, | |
5330 | asection *sec, | |
5331 | bfd_byte *contents) | |
5332 | ||
5333 | { | |
5334 | struct elf_aarch64_link_hash_table *globals = | |
f872121a | 5335 | elf_aarch64_hash_table (link_info); |
68fcca92 JW |
5336 | |
5337 | if (globals == NULL) | |
5338 | return FALSE; | |
5339 | ||
5340 | /* Fix code to point to erratum 835769 stubs. */ | |
5341 | if (globals->fix_erratum_835769) | |
5342 | { | |
5343 | struct erratum_835769_branch_to_stub_data data; | |
5344 | ||
4106101c | 5345 | data.info = link_info; |
68fcca92 JW |
5346 | data.output_section = sec; |
5347 | data.contents = contents; | |
5348 | bfd_hash_traverse (&globals->stub_hash_table, | |
5349 | make_branch_to_erratum_835769_stub, &data); | |
5350 | } | |
5351 | ||
4106101c MS |
5352 | if (globals->fix_erratum_843419) |
5353 | { | |
5354 | struct erratum_835769_branch_to_stub_data data; | |
5355 | ||
5356 | data.info = link_info; | |
5357 | data.output_section = sec; | |
5358 | data.contents = contents; | |
5359 | bfd_hash_traverse (&globals->stub_hash_table, | |
5360 | _bfd_aarch64_erratum_843419_branch_to_stub, &data); | |
5361 | } | |
5362 | ||
68fcca92 JW |
5363 | return FALSE; |
5364 | } | |
5365 | ||
2aff25ba JW |
5366 | /* Return TRUE if RELOC is a relocation against the base of GOT table. */ |
5367 | ||
5368 | static bfd_boolean | |
5369 | aarch64_relocation_aginst_gp_p (bfd_reloc_code_real_type reloc) | |
5370 | { | |
5371 | return (reloc == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14 | |
5372 | || reloc == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 | |
5373 | || reloc == BFD_RELOC_AARCH64_LD64_GOTOFF_LO15 | |
5374 | || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC | |
5375 | || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G1); | |
5376 | } | |
5377 | ||
4e7fbb34 JW |
5378 | /* Perform a relocation as part of a final link. The input relocation type |
5379 | should be TLS relaxed. */ | |
5380 | ||
a06ea964 | 5381 | static bfd_reloc_status_type |
cec5225b | 5382 | elfNN_aarch64_final_link_relocate (reloc_howto_type *howto, |
a06ea964 NC |
5383 | bfd *input_bfd, |
5384 | bfd *output_bfd, | |
5385 | asection *input_section, | |
5386 | bfd_byte *contents, | |
5387 | Elf_Internal_Rela *rel, | |
5388 | bfd_vma value, | |
5389 | struct bfd_link_info *info, | |
5390 | asection *sym_sec, | |
5391 | struct elf_link_hash_entry *h, | |
5392 | bfd_boolean *unresolved_reloc_p, | |
5393 | bfd_boolean save_addend, | |
1419bbe5 WN |
5394 | bfd_vma *saved_addend, |
5395 | Elf_Internal_Sym *sym) | |
a06ea964 | 5396 | { |
1419bbe5 | 5397 | Elf_Internal_Shdr *symtab_hdr; |
a06ea964 | 5398 | unsigned int r_type = howto->type; |
a6bb11b2 YZ |
5399 | bfd_reloc_code_real_type bfd_r_type |
5400 | = elfNN_aarch64_bfd_reloc_from_howto (howto); | |
a06ea964 NC |
5401 | unsigned long r_symndx; |
5402 | bfd_byte *hit_data = contents + rel->r_offset; | |
96d01d93 | 5403 | bfd_vma place, off, got_entry_addr = 0; |
a06ea964 | 5404 | bfd_signed_vma signed_addend; |
cec5225b | 5405 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 5406 | bfd_boolean weak_undef_p; |
ff07562f | 5407 | bfd_boolean relative_reloc; |
b53b1bed | 5408 | asection *base_got; |
ff07562f | 5409 | bfd_vma orig_value = value; |
ddb7fd0f | 5410 | bfd_boolean resolved_to_zero; |
0c1ded8d | 5411 | bfd_boolean abs_symbol_p; |
a06ea964 | 5412 | |
cec5225b | 5413 | globals = elf_aarch64_hash_table (info); |
a06ea964 | 5414 | |
1419bbe5 WN |
5415 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5416 | ||
a06ea964 NC |
5417 | BFD_ASSERT (is_aarch64_elf (input_bfd)); |
5418 | ||
cec5225b | 5419 | r_symndx = ELFNN_R_SYM (rel->r_info); |
a06ea964 | 5420 | |
a06ea964 NC |
5421 | place = input_section->output_section->vma |
5422 | + input_section->output_offset + rel->r_offset; | |
5423 | ||
5424 | /* Get addend, accumulating the addend for consecutive relocs | |
5425 | which refer to the same offset. */ | |
5426 | signed_addend = saved_addend ? *saved_addend : 0; | |
5427 | signed_addend += rel->r_addend; | |
5428 | ||
5429 | weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak | |
5430 | : bfd_is_und_section (sym_sec)); | |
c691de6a | 5431 | abs_symbol_p = h != NULL && bfd_is_abs_symbol (&h->root); |
0c1ded8d | 5432 | |
a6bb11b2 | 5433 | |
1419bbe5 WN |
5434 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
5435 | it here if it is defined in a non-shared object. */ | |
5436 | if (h != NULL | |
5437 | && h->type == STT_GNU_IFUNC | |
5438 | && h->def_regular) | |
5439 | { | |
5440 | asection *plt; | |
5441 | const char *name; | |
99ad26cb | 5442 | bfd_vma addend = 0; |
1419bbe5 | 5443 | |
545bc2b3 SN |
5444 | if ((input_section->flags & SEC_ALLOC) == 0) |
5445 | { | |
f657f8c4 NC |
5446 | /* If this is a SHT_NOTE section without SHF_ALLOC, treat |
5447 | STT_GNU_IFUNC symbol as STT_FUNC. */ | |
5448 | if (elf_section_type (input_section) == SHT_NOTE) | |
5449 | goto skip_ifunc; | |
5450 | ||
545bc2b3 SN |
5451 | /* Dynamic relocs are not propagated for SEC_DEBUGGING |
5452 | sections because such sections are not SEC_ALLOC and | |
5453 | thus ld.so will not process them. */ | |
5454 | if ((input_section->flags & SEC_DEBUGGING) != 0) | |
5455 | return bfd_reloc_ok; | |
5456 | ||
5457 | if (h->root.root.string) | |
5458 | name = h->root.root.string; | |
5459 | else | |
5460 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, NULL); | |
5461 | _bfd_error_handler | |
5462 | /* xgettext:c-format */ | |
2dcf00ce AM |
5463 | (_("%pB(%pA+%#" PRIx64 "): " |
5464 | "unresolvable %s relocation against symbol `%s'"), | |
5465 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
5466 | howto->name, name); | |
545bc2b3 | 5467 | bfd_set_error (bfd_error_bad_value); |
1d75a8e2 | 5468 | return bfd_reloc_notsupported; |
545bc2b3 SN |
5469 | } |
5470 | else if (h->plt.offset == (bfd_vma) -1) | |
5471 | goto bad_ifunc_reloc; | |
1419bbe5 WN |
5472 | |
5473 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
5474 | plt = globals->root.splt ? globals->root.splt : globals->root.iplt; | |
5475 | value = (plt->output_section->vma + plt->output_offset + h->plt.offset); | |
5476 | ||
5477 | switch (bfd_r_type) | |
5478 | { | |
5479 | default: | |
545bc2b3 | 5480 | bad_ifunc_reloc: |
1419bbe5 WN |
5481 | if (h->root.root.string) |
5482 | name = h->root.root.string; | |
5483 | else | |
5484 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
5485 | NULL); | |
4eca0228 | 5486 | _bfd_error_handler |
695344c0 | 5487 | /* xgettext:c-format */ |
871b3ab2 | 5488 | (_("%pB: relocation %s against STT_GNU_IFUNC " |
1419bbe5 WN |
5489 | "symbol `%s' isn't handled by %s"), input_bfd, |
5490 | howto->name, name, __FUNCTION__); | |
5491 | bfd_set_error (bfd_error_bad_value); | |
1d75a8e2 | 5492 | return bfd_reloc_notsupported; |
1419bbe5 WN |
5493 | |
5494 | case BFD_RELOC_AARCH64_NN: | |
5495 | if (rel->r_addend != 0) | |
5496 | { | |
5497 | if (h->root.root.string) | |
5498 | name = h->root.root.string; | |
5499 | else | |
5500 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
5501 | sym, NULL); | |
4eca0228 | 5502 | _bfd_error_handler |
695344c0 | 5503 | /* xgettext:c-format */ |
871b3ab2 | 5504 | (_("%pB: relocation %s against STT_GNU_IFUNC " |
2dcf00ce AM |
5505 | "symbol `%s' has non-zero addend: %" PRId64), |
5506 | input_bfd, howto->name, name, (int64_t) rel->r_addend); | |
1419bbe5 | 5507 | bfd_set_error (bfd_error_bad_value); |
1d75a8e2 | 5508 | return bfd_reloc_notsupported; |
1419bbe5 WN |
5509 | } |
5510 | ||
5511 | /* Generate dynamic relocation only when there is a | |
5512 | non-GOT reference in a shared object. */ | |
0e1862bb | 5513 | if (bfd_link_pic (info) && h->non_got_ref) |
1419bbe5 WN |
5514 | { |
5515 | Elf_Internal_Rela outrel; | |
5516 | asection *sreloc; | |
5517 | ||
5518 | /* Need a dynamic relocation to get the real function | |
5519 | address. */ | |
5520 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
5521 | info, | |
5522 | input_section, | |
5523 | rel->r_offset); | |
5524 | if (outrel.r_offset == (bfd_vma) -1 | |
5525 | || outrel.r_offset == (bfd_vma) -2) | |
5526 | abort (); | |
5527 | ||
5528 | outrel.r_offset += (input_section->output_section->vma | |
5529 | + input_section->output_offset); | |
5530 | ||
5531 | if (h->dynindx == -1 | |
5532 | || h->forced_local | |
0e1862bb | 5533 | || bfd_link_executable (info)) |
1419bbe5 WN |
5534 | { |
5535 | /* This symbol is resolved locally. */ | |
5536 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
5537 | outrel.r_addend = (h->root.u.def.value | |
5538 | + h->root.u.def.section->output_section->vma | |
5539 | + h->root.u.def.section->output_offset); | |
5540 | } | |
5541 | else | |
5542 | { | |
5543 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); | |
5544 | outrel.r_addend = 0; | |
5545 | } | |
5546 | ||
5547 | sreloc = globals->root.irelifunc; | |
5548 | elf_append_rela (output_bfd, sreloc, &outrel); | |
5549 | ||
5550 | /* If this reloc is against an external symbol, we | |
5551 | do not want to fiddle with the addend. Otherwise, | |
5552 | we need to include the symbol value so that it | |
5553 | becomes an addend for the dynamic reloc. For an | |
5554 | internal symbol, we have updated addend. */ | |
5555 | return bfd_reloc_ok; | |
5556 | } | |
5557 | /* FALLTHROUGH */ | |
1419bbe5 | 5558 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 5559 | case BFD_RELOC_AARCH64_JUMP26: |
1419bbe5 WN |
5560 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5561 | signed_addend, | |
5562 | weak_undef_p); | |
5563 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, | |
5564 | howto, value); | |
1419bbe5 WN |
5565 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
5566 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 5567 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 5568 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 5569 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
dc8008f5 | 5570 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 5571 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
a2e1db00 | 5572 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
ce336788 | 5573 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
1419bbe5 WN |
5574 | base_got = globals->root.sgot; |
5575 | off = h->got.offset; | |
5576 | ||
5577 | if (base_got == NULL) | |
5578 | abort (); | |
5579 | ||
5580 | if (off == (bfd_vma) -1) | |
5581 | { | |
5582 | bfd_vma plt_index; | |
5583 | ||
5584 | /* We can't use h->got.offset here to save state, or | |
5585 | even just remember the offset, as finish_dynamic_symbol | |
5586 | would use that as offset into .got. */ | |
5587 | ||
5588 | if (globals->root.splt != NULL) | |
5589 | { | |
b1ee0cc4 WN |
5590 | plt_index = ((h->plt.offset - globals->plt_header_size) / |
5591 | globals->plt_entry_size); | |
1419bbe5 WN |
5592 | off = (plt_index + 3) * GOT_ENTRY_SIZE; |
5593 | base_got = globals->root.sgotplt; | |
5594 | } | |
5595 | else | |
5596 | { | |
5597 | plt_index = h->plt.offset / globals->plt_entry_size; | |
5598 | off = plt_index * GOT_ENTRY_SIZE; | |
5599 | base_got = globals->root.igotplt; | |
5600 | } | |
5601 | ||
5602 | if (h->dynindx == -1 | |
5603 | || h->forced_local | |
5604 | || info->symbolic) | |
5605 | { | |
5606 | /* This references the local definition. We must | |
5607 | initialize this entry in the global offset table. | |
5608 | Since the offset must always be a multiple of 8, | |
5609 | we use the least significant bit to record | |
5610 | whether we have initialized it already. | |
5611 | ||
5612 | When doing a dynamic link, we create a .rela.got | |
5613 | relocation entry to initialize the value. This | |
5614 | is done in the finish_dynamic_symbol routine. */ | |
5615 | if ((off & 1) != 0) | |
5616 | off &= ~1; | |
5617 | else | |
5618 | { | |
5619 | bfd_put_NN (output_bfd, value, | |
5620 | base_got->contents + off); | |
5621 | /* Note that this is harmless as -1 | 1 still is -1. */ | |
5622 | h->got.offset |= 1; | |
5623 | } | |
5624 | } | |
5625 | value = (base_got->output_section->vma | |
5626 | + base_got->output_offset + off); | |
5627 | } | |
5628 | else | |
5629 | value = aarch64_calculate_got_entry_vma (h, globals, info, | |
5630 | value, output_bfd, | |
5631 | unresolved_reloc_p); | |
a0becb89 | 5632 | |
2aff25ba JW |
5633 | if (aarch64_relocation_aginst_gp_p (bfd_r_type)) |
5634 | addend = (globals->root.sgot->output_section->vma | |
5635 | + globals->root.sgot->output_offset); | |
a0becb89 | 5636 | |
1419bbe5 | 5637 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
99ad26cb | 5638 | addend, weak_undef_p); |
1419bbe5 | 5639 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value); |
1419bbe5 | 5640 | case BFD_RELOC_AARCH64_ADD_LO12: |
ce336788 | 5641 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: |
1419bbe5 WN |
5642 | break; |
5643 | } | |
5644 | } | |
5645 | ||
f657f8c4 | 5646 | skip_ifunc: |
ddb7fd0f L |
5647 | resolved_to_zero = (h != NULL |
5648 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
5649 | ||
a6bb11b2 | 5650 | switch (bfd_r_type) |
a06ea964 | 5651 | { |
a6bb11b2 | 5652 | case BFD_RELOC_AARCH64_NONE: |
0484b454 | 5653 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
a6bb11b2 | 5654 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
0484b454 | 5655 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
a06ea964 NC |
5656 | *unresolved_reloc_p = FALSE; |
5657 | return bfd_reloc_ok; | |
5658 | ||
a6bb11b2 | 5659 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
5660 | |
5661 | /* When generating a shared object or relocatable executable, these | |
07d6d2b8 AM |
5662 | relocations are copied into the output file to be resolved at |
5663 | run time. */ | |
6353d82b JW |
5664 | if (((bfd_link_pic (info) |
5665 | || globals->root.is_relocatable_executable) | |
5666 | && (input_section->flags & SEC_ALLOC) | |
5667 | && (h == NULL | |
ddb7fd0f L |
5668 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
5669 | && !resolved_to_zero) | |
6353d82b JW |
5670 | || h->root.type != bfd_link_hash_undefweak)) |
5671 | /* Or we are creating an executable, we may need to keep relocations | |
5672 | for symbols satisfied by a dynamic library if we manage to avoid | |
5673 | copy relocs for the symbol. */ | |
5674 | || (ELIMINATE_COPY_RELOCS | |
5675 | && !bfd_link_pic (info) | |
5676 | && h != NULL | |
5677 | && (input_section->flags & SEC_ALLOC) | |
5678 | && h->dynindx != -1 | |
5679 | && !h->non_got_ref | |
5680 | && ((h->def_dynamic | |
5681 | && !h->def_regular) | |
5682 | || h->root.type == bfd_link_hash_undefweak | |
5683 | || h->root.type == bfd_link_hash_undefined))) | |
a06ea964 NC |
5684 | { |
5685 | Elf_Internal_Rela outrel; | |
5686 | bfd_byte *loc; | |
5687 | bfd_boolean skip, relocate; | |
5688 | asection *sreloc; | |
5689 | ||
5690 | *unresolved_reloc_p = FALSE; | |
5691 | ||
a06ea964 NC |
5692 | skip = FALSE; |
5693 | relocate = FALSE; | |
5694 | ||
5695 | outrel.r_addend = signed_addend; | |
5696 | outrel.r_offset = | |
5697 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
5698 | rel->r_offset); | |
5699 | if (outrel.r_offset == (bfd_vma) - 1) | |
5700 | skip = TRUE; | |
5701 | else if (outrel.r_offset == (bfd_vma) - 2) | |
5702 | { | |
5703 | skip = TRUE; | |
5704 | relocate = TRUE; | |
5705 | } | |
0c1ded8d RL |
5706 | else if (abs_symbol_p) |
5707 | { | |
5708 | /* Local absolute symbol. */ | |
5709 | skip = (h->forced_local || (h->dynindx == -1)); | |
5710 | relocate = skip; | |
5711 | } | |
a06ea964 NC |
5712 | |
5713 | outrel.r_offset += (input_section->output_section->vma | |
5714 | + input_section->output_offset); | |
5715 | ||
5716 | if (skip) | |
5717 | memset (&outrel, 0, sizeof outrel); | |
5718 | else if (h != NULL | |
5719 | && h->dynindx != -1 | |
0e1862bb | 5720 | && (!bfd_link_pic (info) |
0c1ded8d | 5721 | || !(bfd_link_pie (info) || SYMBOLIC_BIND (info, h)) |
0e1862bb | 5722 | || !h->def_regular)) |
cec5225b | 5723 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); |
a06ea964 NC |
5724 | else |
5725 | { | |
5726 | int symbol; | |
5727 | ||
5728 | /* On SVR4-ish systems, the dynamic loader cannot | |
5729 | relocate the text and data segments independently, | |
5730 | so the symbol does not matter. */ | |
5731 | symbol = 0; | |
1f56df9d | 5732 | relocate = globals->no_apply_dynamic_relocs ? FALSE : TRUE; |
a6bb11b2 | 5733 | outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE)); |
a06ea964 NC |
5734 | outrel.r_addend += value; |
5735 | } | |
5736 | ||
1419bbe5 WN |
5737 | sreloc = elf_section_data (input_section)->sreloc; |
5738 | if (sreloc == NULL || sreloc->contents == NULL) | |
5739 | return bfd_reloc_notsupported; | |
5740 | ||
5741 | loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals); | |
cec5225b | 5742 | bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc); |
a06ea964 | 5743 | |
1419bbe5 | 5744 | if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size) |
a06ea964 NC |
5745 | { |
5746 | /* Sanity to check that we have previously allocated | |
5747 | sufficient space in the relocation section for the | |
5748 | number of relocations we actually want to emit. */ | |
5749 | abort (); | |
5750 | } | |
5751 | ||
5752 | /* If this reloc is against an external symbol, we do not want to | |
5753 | fiddle with the addend. Otherwise, we need to include the symbol | |
5754 | value so that it becomes an addend for the dynamic reloc. */ | |
5755 | if (!relocate) | |
5756 | return bfd_reloc_ok; | |
5757 | ||
5758 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5759 | contents, rel->r_offset, value, | |
5760 | signed_addend); | |
5761 | } | |
5762 | else | |
5763 | value += signed_addend; | |
5764 | break; | |
5765 | ||
a6bb11b2 | 5766 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 5767 | case BFD_RELOC_AARCH64_JUMP26: |
a06ea964 NC |
5768 | { |
5769 | asection *splt = globals->root.splt; | |
5770 | bfd_boolean via_plt_p = | |
5771 | splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1; | |
5772 | ||
5773 | /* A call to an undefined weak symbol is converted to a jump to | |
5774 | the next instruction unless a PLT entry will be created. | |
5775 | The jump to the next instruction is optimized as a NOP. | |
5776 | Do the same for local undefined symbols. */ | |
5777 | if (weak_undef_p && ! via_plt_p) | |
5778 | { | |
5779 | bfd_putl32 (INSN_NOP, hit_data); | |
5780 | return bfd_reloc_ok; | |
5781 | } | |
5782 | ||
5783 | /* If the call goes through a PLT entry, make sure to | |
5784 | check distance to the right destination address. */ | |
5785 | if (via_plt_p) | |
07f9ddfe JW |
5786 | value = (splt->output_section->vma |
5787 | + splt->output_offset + h->plt.offset); | |
5788 | ||
5789 | /* Check if a stub has to be inserted because the destination | |
5790 | is too far away. */ | |
5791 | struct elf_aarch64_stub_hash_entry *stub_entry = NULL; | |
2f340668 JW |
5792 | |
5793 | /* If the branch destination is directed to plt stub, "value" will be | |
5794 | the final destination, otherwise we should plus signed_addend, it may | |
5795 | contain non-zero value, for example call to local function symbol | |
5796 | which are turned into "sec_sym + sec_off", and sec_off is kept in | |
5797 | signed_addend. */ | |
5798 | if (! aarch64_valid_branch_p (via_plt_p ? value : value + signed_addend, | |
5799 | place)) | |
07f9ddfe JW |
5800 | /* The target is out of reach, so redirect the branch to |
5801 | the local stub for this function. */ | |
5802 | stub_entry = elfNN_aarch64_get_stub_entry (input_section, sym_sec, h, | |
5803 | rel, globals); | |
5804 | if (stub_entry != NULL) | |
2f340668 JW |
5805 | { |
5806 | value = (stub_entry->stub_offset | |
5807 | + stub_entry->stub_sec->output_offset | |
5808 | + stub_entry->stub_sec->output_section->vma); | |
5809 | ||
5810 | /* We have redirected the destination to stub entry address, | |
5811 | so ignore any addend record in the original rela entry. */ | |
5812 | signed_addend = 0; | |
5813 | } | |
a06ea964 | 5814 | } |
caed7120 YZ |
5815 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5816 | signed_addend, weak_undef_p); | |
07f9ddfe | 5817 | *unresolved_reloc_p = FALSE; |
a06ea964 NC |
5818 | break; |
5819 | ||
dcbd20eb JW |
5820 | case BFD_RELOC_AARCH64_16_PCREL: |
5821 | case BFD_RELOC_AARCH64_32_PCREL: | |
5822 | case BFD_RELOC_AARCH64_64_PCREL: | |
ce336788 JW |
5823 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
5824 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
5825 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
5826 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
1daf502a RL |
5827 | case BFD_RELOC_AARCH64_MOVW_PREL_G0: |
5828 | case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC: | |
5829 | case BFD_RELOC_AARCH64_MOVW_PREL_G1: | |
5830 | case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC: | |
5831 | case BFD_RELOC_AARCH64_MOVW_PREL_G2: | |
5832 | case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC: | |
5833 | case BFD_RELOC_AARCH64_MOVW_PREL_G3: | |
0e1862bb | 5834 | if (bfd_link_pic (info) |
dcbd20eb JW |
5835 | && (input_section->flags & SEC_ALLOC) != 0 |
5836 | && (input_section->flags & SEC_READONLY) != 0 | |
d68f1976 | 5837 | && !SYMBOL_REFERENCES_LOCAL (info, h)) |
dcbd20eb JW |
5838 | { |
5839 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
5840 | ||
4eca0228 | 5841 | _bfd_error_handler |
695344c0 | 5842 | /* xgettext:c-format */ |
871b3ab2 | 5843 | (_("%pB: relocation %s against symbol `%s' which may bind " |
d68f1976 JW |
5844 | "externally can not be used when making a shared object; " |
5845 | "recompile with -fPIC"), | |
dcbd20eb JW |
5846 | input_bfd, elfNN_aarch64_howto_table[howto_index].name, |
5847 | h->root.root.string); | |
5848 | bfd_set_error (bfd_error_bad_value); | |
1d75a8e2 | 5849 | return bfd_reloc_notsupported; |
dcbd20eb | 5850 | } |
1a0670f3 | 5851 | /* Fall through. */ |
dcbd20eb | 5852 | |
a6bb11b2 | 5853 | case BFD_RELOC_AARCH64_16: |
92d77487 RL |
5854 | #if ARCH_SIZE == 64 |
5855 | case BFD_RELOC_AARCH64_32: | |
5856 | #endif | |
a6bb11b2 | 5857 | case BFD_RELOC_AARCH64_ADD_LO12: |
a6bb11b2 | 5858 | case BFD_RELOC_AARCH64_BRANCH19: |
ce336788 | 5859 | case BFD_RELOC_AARCH64_LDST128_LO12: |
a6bb11b2 YZ |
5860 | case BFD_RELOC_AARCH64_LDST16_LO12: |
5861 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
5862 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
ce336788 | 5863 | case BFD_RELOC_AARCH64_LDST8_LO12: |
a6bb11b2 YZ |
5864 | case BFD_RELOC_AARCH64_MOVW_G0: |
5865 | case BFD_RELOC_AARCH64_MOVW_G0_NC: | |
ce336788 | 5866 | case BFD_RELOC_AARCH64_MOVW_G0_S: |
a6bb11b2 YZ |
5867 | case BFD_RELOC_AARCH64_MOVW_G1: |
5868 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
ce336788 | 5869 | case BFD_RELOC_AARCH64_MOVW_G1_S: |
a6bb11b2 YZ |
5870 | case BFD_RELOC_AARCH64_MOVW_G2: |
5871 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
ce336788 | 5872 | case BFD_RELOC_AARCH64_MOVW_G2_S: |
a6bb11b2 | 5873 | case BFD_RELOC_AARCH64_MOVW_G3: |
a6bb11b2 | 5874 | case BFD_RELOC_AARCH64_TSTBR14: |
caed7120 YZ |
5875 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5876 | signed_addend, weak_undef_p); | |
a06ea964 NC |
5877 | break; |
5878 | ||
a6bb11b2 YZ |
5879 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
5880 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 5881 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 5882 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 5883 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 5884 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
2aff25ba JW |
5885 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
5886 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: | |
5887 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: | |
a06ea964 NC |
5888 | if (globals->root.sgot == NULL) |
5889 | BFD_ASSERT (h != NULL); | |
5890 | ||
ff07562f | 5891 | relative_reloc = FALSE; |
a06ea964 NC |
5892 | if (h != NULL) |
5893 | { | |
99ad26cb | 5894 | bfd_vma addend = 0; |
ff07562f JW |
5895 | |
5896 | /* If a symbol is not dynamic and is not undefined weak, bind it | |
5897 | locally and generate a RELATIVE relocation under PIC mode. | |
5898 | ||
5899 | NOTE: one symbol may be referenced by several relocations, we | |
5900 | should only generate one RELATIVE relocation for that symbol. | |
5901 | Therefore, check GOT offset mark first. */ | |
5902 | if (h->dynindx == -1 | |
5903 | && !h->forced_local | |
5904 | && h->root.type != bfd_link_hash_undefweak | |
5905 | && bfd_link_pic (info) | |
5906 | && !symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
5907 | relative_reloc = TRUE; | |
5908 | ||
a06ea964 NC |
5909 | value = aarch64_calculate_got_entry_vma (h, globals, info, value, |
5910 | output_bfd, | |
5911 | unresolved_reloc_p); | |
ff07562f JW |
5912 | /* Record the GOT entry address which will be used when generating |
5913 | RELATIVE relocation. */ | |
5914 | if (relative_reloc) | |
5915 | got_entry_addr = value; | |
5916 | ||
2aff25ba | 5917 | if (aarch64_relocation_aginst_gp_p (bfd_r_type)) |
99ad26cb JW |
5918 | addend = (globals->root.sgot->output_section->vma |
5919 | + globals->root.sgot->output_offset); | |
caed7120 | 5920 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
99ad26cb | 5921 | addend, weak_undef_p); |
a06ea964 | 5922 | } |
b53b1bed JW |
5923 | else |
5924 | { | |
99ad26cb | 5925 | bfd_vma addend = 0; |
b53b1bed JW |
5926 | struct elf_aarch64_local_symbol *locals |
5927 | = elf_aarch64_locals (input_bfd); | |
5928 | ||
5929 | if (locals == NULL) | |
5930 | { | |
5931 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
4eca0228 | 5932 | _bfd_error_handler |
695344c0 | 5933 | /* xgettext:c-format */ |
90b6238f | 5934 | (_("%pB: local symbol descriptor table be NULL when applying " |
b53b1bed JW |
5935 | "relocation %s against local symbol"), |
5936 | input_bfd, elfNN_aarch64_howto_table[howto_index].name); | |
5937 | abort (); | |
5938 | } | |
5939 | ||
5940 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
5941 | base_got = globals->root.sgot; | |
ff07562f JW |
5942 | got_entry_addr = (base_got->output_section->vma |
5943 | + base_got->output_offset + off); | |
b53b1bed JW |
5944 | |
5945 | if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
5946 | { | |
5947 | bfd_put_64 (output_bfd, value, base_got->contents + off); | |
5948 | ||
ff07562f JW |
5949 | /* For local symbol, we have done absolute relocation in static |
5950 | linking stage. While for shared library, we need to update the | |
5951 | content of GOT entry according to the shared object's runtime | |
5952 | base address. So, we need to generate a R_AARCH64_RELATIVE reloc | |
5953 | for dynamic linker. */ | |
0e1862bb | 5954 | if (bfd_link_pic (info)) |
ff07562f | 5955 | relative_reloc = TRUE; |
b53b1bed JW |
5956 | |
5957 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
5958 | } | |
5959 | ||
5960 | /* Update the relocation value to GOT entry addr as we have transformed | |
5961 | the direct data access into indirect data access through GOT. */ | |
5962 | value = got_entry_addr; | |
99ad26cb | 5963 | |
2aff25ba | 5964 | if (aarch64_relocation_aginst_gp_p (bfd_r_type)) |
99ad26cb JW |
5965 | addend = base_got->output_section->vma + base_got->output_offset; |
5966 | ||
5967 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, | |
5968 | addend, weak_undef_p); | |
b53b1bed | 5969 | } |
ff07562f JW |
5970 | |
5971 | if (relative_reloc) | |
5972 | { | |
5973 | asection *s; | |
5974 | Elf_Internal_Rela outrel; | |
5975 | ||
5976 | s = globals->root.srelgot; | |
5977 | if (s == NULL) | |
5978 | abort (); | |
5979 | ||
5980 | outrel.r_offset = got_entry_addr; | |
5981 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); | |
5982 | outrel.r_addend = orig_value; | |
5983 | elf_append_rela (output_bfd, s, &outrel); | |
5984 | } | |
a2e1db00 RL |
5985 | break; |
5986 | ||
ce336788 | 5987 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 5988 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 5989 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 5990 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 5991 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 5992 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 5993 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
73f925cc | 5994 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 5995 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 5996 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
5997 | if (globals->root.sgot == NULL) |
5998 | return bfd_reloc_notsupported; | |
5999 | ||
6000 | value = (symbol_got_offset (input_bfd, h, r_symndx) | |
6001 | + globals->root.sgot->output_section->vma | |
f44a1f8e | 6002 | + globals->root.sgot->output_offset); |
a06ea964 | 6003 | |
caed7120 YZ |
6004 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
6005 | 0, weak_undef_p); | |
a06ea964 NC |
6006 | *unresolved_reloc_p = FALSE; |
6007 | break; | |
6008 | ||
7ba7cfe4 | 6009 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 6010 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
3b957e5b RL |
6011 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
6012 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
94facae3 RL |
6013 | if (globals->root.sgot == NULL) |
6014 | return bfd_reloc_notsupported; | |
6015 | ||
6016 | value = symbol_got_offset (input_bfd, h, r_symndx); | |
6017 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, | |
6018 | 0, weak_undef_p); | |
6019 | *unresolved_reloc_p = FALSE; | |
6020 | break; | |
6021 | ||
6ffe9a1b | 6022 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12: |
40fbed84 | 6023 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12: |
753999c1 | 6024 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC: |
07c9aa07 JW |
6025 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12: |
6026 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC: | |
6027 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12: | |
6028 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC: | |
6029 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12: | |
6030 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC: | |
6031 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12: | |
6032 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC: | |
6ffe9a1b JW |
6033 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0: |
6034 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC: | |
6035 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1: | |
6036 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC: | |
6037 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2: | |
40fbed84 JW |
6038 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
6039 | signed_addend - dtpoff_base (info), | |
6040 | weak_undef_p); | |
6041 | break; | |
6042 | ||
a6bb11b2 YZ |
6043 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
6044 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: | |
6045 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: | |
e04ef022 RL |
6046 | case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12: |
6047 | case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC: | |
6048 | case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12: | |
6049 | case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC: | |
6050 | case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12: | |
6051 | case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC: | |
6052 | case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12: | |
6053 | case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC: | |
a6bb11b2 YZ |
6054 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: |
6055 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
6056 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: | |
6057 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
6058 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
caed7120 YZ |
6059 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
6060 | signed_addend - tpoff_base (info), | |
6061 | weak_undef_p); | |
a06ea964 NC |
6062 | *unresolved_reloc_p = FALSE; |
6063 | break; | |
6064 | ||
f955cccf | 6065 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 6066 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 6067 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 6068 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
f955cccf | 6069 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
1ada945d | 6070 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
6071 | if (globals->root.sgot == NULL) |
6072 | return bfd_reloc_notsupported; | |
a06ea964 NC |
6073 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) |
6074 | + globals->root.sgotplt->output_section->vma | |
f44a1f8e | 6075 | + globals->root.sgotplt->output_offset |
a06ea964 NC |
6076 | + globals->sgotplt_jump_table_size); |
6077 | ||
caed7120 YZ |
6078 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
6079 | 0, weak_undef_p); | |
a06ea964 NC |
6080 | *unresolved_reloc_p = FALSE; |
6081 | break; | |
6082 | ||
0484b454 RL |
6083 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
6084 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
6085 | if (globals->root.sgot == NULL) | |
6086 | return bfd_reloc_notsupported; | |
6087 | ||
6088 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) | |
6089 | + globals->root.sgotplt->output_section->vma | |
6090 | + globals->root.sgotplt->output_offset | |
6091 | + globals->sgotplt_jump_table_size); | |
6092 | ||
6093 | value -= (globals->root.sgot->output_section->vma | |
6094 | + globals->root.sgot->output_offset); | |
6095 | ||
6096 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, | |
6097 | 0, weak_undef_p); | |
6098 | *unresolved_reloc_p = FALSE; | |
6099 | break; | |
6100 | ||
a06ea964 NC |
6101 | default: |
6102 | return bfd_reloc_notsupported; | |
6103 | } | |
6104 | ||
6105 | if (saved_addend) | |
6106 | *saved_addend = value; | |
6107 | ||
6108 | /* Only apply the final relocation in a sequence. */ | |
6109 | if (save_addend) | |
6110 | return bfd_reloc_continue; | |
6111 | ||
caed7120 YZ |
6112 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, |
6113 | howto, value); | |
a06ea964 NC |
6114 | } |
6115 | ||
2d0ca824 YN |
6116 | /* LP64 and ILP32 operates on x- and w-registers respectively. |
6117 | Next definitions take into account the difference between | |
6118 | corresponding machine codes. R means x-register if the target | |
6119 | arch is LP64, and w-register if the target is ILP32. */ | |
6120 | ||
6121 | #if ARCH_SIZE == 64 | |
6122 | # define add_R0_R0 (0x91000000) | |
6123 | # define add_R0_R0_R1 (0x8b000020) | |
6124 | # define add_R0_R1 (0x91400020) | |
6125 | # define ldr_R0 (0x58000000) | |
6126 | # define ldr_R0_mask(i) (i & 0xffffffe0) | |
6127 | # define ldr_R0_x0 (0xf9400000) | |
6128 | # define ldr_hw_R0 (0xf2a00000) | |
6129 | # define movk_R0 (0xf2800000) | |
6130 | # define movz_R0 (0xd2a00000) | |
6131 | # define movz_hw_R0 (0xd2c00000) | |
6132 | #else /*ARCH_SIZE == 32 */ | |
6133 | # define add_R0_R0 (0x11000000) | |
6134 | # define add_R0_R0_R1 (0x0b000020) | |
6135 | # define add_R0_R1 (0x11400020) | |
6136 | # define ldr_R0 (0x18000000) | |
6137 | # define ldr_R0_mask(i) (i & 0xbfffffe0) | |
6138 | # define ldr_R0_x0 (0xb9400000) | |
6139 | # define ldr_hw_R0 (0x72a00000) | |
6140 | # define movk_R0 (0x72800000) | |
6141 | # define movz_R0 (0x52a00000) | |
6142 | # define movz_hw_R0 (0x52c00000) | |
6143 | #endif | |
6144 | ||
9fca35fc TC |
6145 | /* Structure to hold payload for _bfd_aarch64_erratum_843419_clear_stub, |
6146 | it is used to identify the stub information to reset. */ | |
6147 | ||
6148 | struct erratum_843419_branch_to_stub_clear_data | |
6149 | { | |
6150 | bfd_vma adrp_offset; | |
6151 | asection *output_section; | |
6152 | }; | |
6153 | ||
6154 | /* Clear the erratum information for GEN_ENTRY if the ADRP_OFFSET and | |
6155 | section inside IN_ARG matches. The clearing is done by setting the | |
6156 | stub_type to none. */ | |
6157 | ||
6158 | static bfd_boolean | |
6159 | _bfd_aarch64_erratum_843419_clear_stub (struct bfd_hash_entry *gen_entry, | |
6160 | void *in_arg) | |
6161 | { | |
6162 | struct elf_aarch64_stub_hash_entry *stub_entry | |
6163 | = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
6164 | struct erratum_843419_branch_to_stub_clear_data *data | |
6165 | = (struct erratum_843419_branch_to_stub_clear_data *) in_arg; | |
6166 | ||
6167 | if (stub_entry->target_section != data->output_section | |
6168 | || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer | |
6169 | || stub_entry->adrp_offset != data->adrp_offset) | |
6170 | return TRUE; | |
6171 | ||
6172 | /* Change the stub type instead of removing the entry, removing from the hash | |
6173 | table would be slower and we have already reserved the memory for the entry | |
6174 | so there wouldn't be much gain. Changing the stub also keeps around a | |
6175 | record of what was there before. */ | |
6176 | stub_entry->stub_type = aarch64_stub_none; | |
6177 | ||
6178 | /* We're done and there could have been only one matching stub at that | |
6179 | particular offset, so abort further traversal. */ | |
6180 | return FALSE; | |
6181 | } | |
6182 | ||
6183 | /* TLS Relaxations may relax an adrp sequence that matches the erratum 843419 | |
6184 | sequence. In this case the erratum no longer applies and we need to remove | |
6185 | the entry from the pending stub generation. This clears matching adrp insn | |
6186 | at ADRP_OFFSET in INPUT_SECTION in the stub table defined in GLOBALS. */ | |
6187 | ||
6188 | static void | |
6189 | clear_erratum_843419_entry (struct elf_aarch64_link_hash_table *globals, | |
6190 | bfd_vma adrp_offset, asection *input_section) | |
6191 | { | |
739b5c9c | 6192 | if (globals->fix_erratum_843419 & ERRAT_ADRP) |
9fca35fc TC |
6193 | { |
6194 | struct erratum_843419_branch_to_stub_clear_data data; | |
6195 | data.adrp_offset = adrp_offset; | |
6196 | data.output_section = input_section; | |
6197 | ||
6198 | bfd_hash_traverse (&globals->stub_hash_table, | |
6199 | _bfd_aarch64_erratum_843419_clear_stub, &data); | |
6200 | } | |
6201 | } | |
6202 | ||
a06ea964 NC |
6203 | /* Handle TLS relaxations. Relaxing is possible for symbols that use |
6204 | R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static | |
6205 | link. | |
6206 | ||
6207 | Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller | |
6208 | is to then call final_link_relocate. Return other values in the | |
6209 | case of error. */ | |
6210 | ||
6211 | static bfd_reloc_status_type | |
cec5225b | 6212 | elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals, |
9fca35fc TC |
6213 | bfd *input_bfd, asection *input_section, |
6214 | bfd_byte *contents, Elf_Internal_Rela *rel, | |
6215 | struct elf_link_hash_entry *h) | |
a06ea964 NC |
6216 | { |
6217 | bfd_boolean is_local = h == NULL; | |
cec5225b | 6218 | unsigned int r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
6219 | unsigned long insn; |
6220 | ||
6221 | BFD_ASSERT (globals && input_bfd && contents && rel); | |
6222 | ||
0aa13fee | 6223 | switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type)) |
a06ea964 | 6224 | { |
a6bb11b2 | 6225 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 6226 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a06ea964 NC |
6227 | if (is_local) |
6228 | { | |
6229 | /* GD->LE relaxation: | |
2d0ca824 | 6230 | adrp x0, :tlsgd:var => movz R0, :tprel_g1:var |
a06ea964 | 6231 | or |
2d0ca824 YN |
6232 | adrp x0, :tlsdesc:var => movz R0, :tprel_g1:var |
6233 | ||
6234 | Where R is x for LP64, and w for ILP32. */ | |
6235 | bfd_putl32 (movz_R0, contents + rel->r_offset); | |
9fca35fc TC |
6236 | /* We have relaxed the adrp into a mov, we may have to clear any |
6237 | pending erratum fixes. */ | |
6238 | clear_erratum_843419_entry (globals, rel->r_offset, input_section); | |
a06ea964 NC |
6239 | return bfd_reloc_continue; |
6240 | } | |
6241 | else | |
6242 | { | |
6243 | /* GD->IE relaxation: | |
6244 | adrp x0, :tlsgd:var => adrp x0, :gottprel:var | |
6245 | or | |
6246 | adrp x0, :tlsdesc:var => adrp x0, :gottprel:var | |
6247 | */ | |
a06ea964 NC |
6248 | return bfd_reloc_continue; |
6249 | } | |
6250 | ||
389b8029 MS |
6251 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
6252 | BFD_ASSERT (0); | |
6253 | break; | |
6254 | ||
1ada945d MS |
6255 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
6256 | if (is_local) | |
6257 | { | |
6258 | /* Tiny TLSDESC->LE relaxation: | |
07d6d2b8 AM |
6259 | ldr x1, :tlsdesc:var => movz R0, #:tprel_g1:var |
6260 | adr x0, :tlsdesc:var => movk R0, #:tprel_g0_nc:var | |
1ada945d | 6261 | .tlsdesccall var |
07d6d2b8 | 6262 | blr x1 => nop |
2d0ca824 YN |
6263 | |
6264 | Where R is x for LP64, and w for ILP32. */ | |
1ada945d MS |
6265 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); |
6266 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
6267 | ||
6268 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
6269 | AARCH64_R (TLSLE_MOVW_TPREL_G0_NC)); | |
6270 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6271 | ||
2d0ca824 YN |
6272 | bfd_putl32 (movz_R0, contents + rel->r_offset); |
6273 | bfd_putl32 (movk_R0, contents + rel->r_offset + 4); | |
1ada945d MS |
6274 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); |
6275 | return bfd_reloc_continue; | |
6276 | } | |
6277 | else | |
6278 | { | |
6279 | /* Tiny TLSDESC->IE relaxation: | |
07d6d2b8 AM |
6280 | ldr x1, :tlsdesc:var => ldr x0, :gottprel:var |
6281 | adr x0, :tlsdesc:var => nop | |
1ada945d | 6282 | .tlsdesccall var |
07d6d2b8 | 6283 | blr x1 => nop |
1ada945d MS |
6284 | */ |
6285 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); | |
6286 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
6287 | ||
6288 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6289 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6290 | ||
2d0ca824 | 6291 | bfd_putl32 (ldr_R0, contents + rel->r_offset); |
1ada945d MS |
6292 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4); |
6293 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); | |
6294 | return bfd_reloc_continue; | |
6295 | } | |
6296 | ||
3c12b054 MS |
6297 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
6298 | if (is_local) | |
6299 | { | |
6300 | /* Tiny GD->LE relaxation: | |
07d6d2b8 AM |
6301 | adr x0, :tlsgd:var => mrs x1, tpidr_el0 |
6302 | bl __tls_get_addr => add R0, R1, #:tprel_hi12:x, lsl #12 | |
6303 | nop => add R0, R0, #:tprel_lo12_nc:x | |
2d0ca824 YN |
6304 | |
6305 | Where R is x for LP64, and x for Ilp32. */ | |
3c12b054 MS |
6306 | |
6307 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
6308 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6309 | ||
6310 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0); | |
2d0ca824 YN |
6311 | bfd_putl32 (add_R0_R1, contents + rel->r_offset + 4); |
6312 | bfd_putl32 (add_R0_R0, contents + rel->r_offset + 8); | |
3c12b054 MS |
6313 | |
6314 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
6315 | AARCH64_R (TLSLE_ADD_TPREL_LO12_NC)); | |
6316 | rel[1].r_offset = rel->r_offset + 8; | |
6317 | ||
6318 | /* Move the current relocation to the second instruction in | |
6319 | the sequence. */ | |
6320 | rel->r_offset += 4; | |
6321 | rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
6322 | AARCH64_R (TLSLE_ADD_TPREL_HI12)); | |
6323 | return bfd_reloc_continue; | |
6324 | } | |
6325 | else | |
6326 | { | |
6327 | /* Tiny GD->IE relaxation: | |
07d6d2b8 AM |
6328 | adr x0, :tlsgd:var => ldr R0, :gottprel:var |
6329 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6330 | nop => add R0, R0, R1 | |
2d0ca824 YN |
6331 | |
6332 | Where R is x for LP64, and w for Ilp32. */ | |
3c12b054 MS |
6333 | |
6334 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
6335 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6336 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6337 | ||
2d0ca824 | 6338 | bfd_putl32 (ldr_R0, contents + rel->r_offset); |
3c12b054 | 6339 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); |
2d0ca824 | 6340 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8); |
3c12b054 MS |
6341 | return bfd_reloc_continue; |
6342 | } | |
6343 | ||
ac734732 RL |
6344 | #if ARCH_SIZE == 64 |
6345 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: | |
6346 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSGD_MOVW_G0_NC)); | |
6347 | BFD_ASSERT (rel->r_offset + 12 == rel[2].r_offset); | |
6348 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (CALL26)); | |
6349 | ||
6350 | if (is_local) | |
6351 | { | |
6352 | /* Large GD->LE relaxation: | |
07d6d2b8 | 6353 | movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32 |
ac734732 | 6354 | movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16 |
07d6d2b8 AM |
6355 | add x0, gp, x0 => movk x0, #:tprel_g0_nc:var |
6356 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6357 | nop => add x0, x0, x1 | |
ac734732 RL |
6358 | */ |
6359 | rel[2].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
6360 | AARCH64_R (TLSLE_MOVW_TPREL_G0_NC)); | |
6361 | rel[2].r_offset = rel->r_offset + 8; | |
6362 | ||
2d0ca824 YN |
6363 | bfd_putl32 (movz_hw_R0, contents + rel->r_offset + 0); |
6364 | bfd_putl32 (ldr_hw_R0, contents + rel->r_offset + 4); | |
6365 | bfd_putl32 (movk_R0, contents + rel->r_offset + 8); | |
ac734732 | 6366 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12); |
2d0ca824 | 6367 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16); |
ac734732 RL |
6368 | } |
6369 | else | |
6370 | { | |
6371 | /* Large GD->IE relaxation: | |
07d6d2b8 | 6372 | movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16 |
ac734732 | 6373 | movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var |
07d6d2b8 AM |
6374 | add x0, gp, x0 => ldr x0, [gp, x0] |
6375 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6376 | nop => add x0, x0, x1 | |
ac734732 RL |
6377 | */ |
6378 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6379 | bfd_putl32 (0xd2a80000, contents + rel->r_offset + 0); | |
2d0ca824 | 6380 | bfd_putl32 (ldr_R0, contents + rel->r_offset + 8); |
ac734732 | 6381 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12); |
2d0ca824 | 6382 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16); |
ac734732 RL |
6383 | } |
6384 | return bfd_reloc_continue; | |
6385 | ||
6386 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: | |
6387 | return bfd_reloc_continue; | |
6388 | #endif | |
6389 | ||
043bf05a MS |
6390 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
6391 | return bfd_reloc_continue; | |
6392 | ||
a6bb11b2 | 6393 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
a06ea964 NC |
6394 | if (is_local) |
6395 | { | |
6396 | /* GD->LE relaxation: | |
6397 | ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var | |
2d0ca824 YN |
6398 | |
6399 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
6400 | bfd_putl32 (movk_R0, contents + rel->r_offset); | |
a06ea964 NC |
6401 | return bfd_reloc_continue; |
6402 | } | |
6403 | else | |
6404 | { | |
6405 | /* GD->IE relaxation: | |
2d0ca824 YN |
6406 | ldr xd, [x0, #:tlsdesc_lo12:var] => ldr R0, [x0, #:gottprel_lo12:var] |
6407 | ||
6408 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 | 6409 | insn = bfd_getl32 (contents + rel->r_offset); |
2d0ca824 | 6410 | bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset); |
a06ea964 NC |
6411 | return bfd_reloc_continue; |
6412 | } | |
6413 | ||
a6bb11b2 | 6414 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a06ea964 NC |
6415 | if (is_local) |
6416 | { | |
6417 | /* GD->LE relaxation | |
07d6d2b8 AM |
6418 | add x0, #:tlsgd_lo12:var => movk R0, :tprel_g0_nc:var |
6419 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6420 | nop => add R0, R1, R0 | |
2d0ca824 YN |
6421 | |
6422 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 NC |
6423 | |
6424 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
6425 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
cec5225b | 6426 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 | 6427 | |
2d0ca824 | 6428 | bfd_putl32 (movk_R0, contents + rel->r_offset); |
a06ea964 | 6429 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); |
2d0ca824 | 6430 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8); |
a06ea964 NC |
6431 | return bfd_reloc_continue; |
6432 | } | |
6433 | else | |
6434 | { | |
6435 | /* GD->IE relaxation | |
07d6d2b8 AM |
6436 | ADD x0, #:tlsgd_lo12:var => ldr R0, [x0, #:gottprel_lo12:var] |
6437 | BL __tls_get_addr => mrs x1, tpidr_el0 | |
a06ea964 | 6438 | R_AARCH64_CALL26 |
07d6d2b8 | 6439 | NOP => add R0, R1, R0 |
5cd1d8bc YN |
6440 | |
6441 | Where R is x for lp64 mode, and w for ilp32 mode. */ | |
a06ea964 | 6442 | |
a6bb11b2 | 6443 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); |
a06ea964 NC |
6444 | |
6445 | /* Remove the relocation on the BL instruction. */ | |
cec5225b | 6446 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 | 6447 | |
a06ea964 NC |
6448 | /* We choose to fixup the BL and NOP instructions using the |
6449 | offset from the second relocation to allow flexibility in | |
6450 | scheduling instructions between the ADD and BL. */ | |
2d0ca824 | 6451 | bfd_putl32 (ldr_R0_x0, contents + rel->r_offset); |
5cd1d8bc | 6452 | bfd_putl32 (0xd53bd041, contents + rel[1].r_offset); |
2d0ca824 | 6453 | bfd_putl32 (add_R0_R0_R1, contents + rel[1].r_offset + 4); |
a06ea964 NC |
6454 | return bfd_reloc_continue; |
6455 | } | |
6456 | ||
0484b454 | 6457 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
f955cccf | 6458 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 6459 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a06ea964 | 6460 | /* GD->IE/LE relaxation: |
07d6d2b8 AM |
6461 | add x0, x0, #:tlsdesc_lo12:var => nop |
6462 | blr xd => nop | |
a06ea964 NC |
6463 | */ |
6464 | bfd_putl32 (INSN_NOP, contents + rel->r_offset); | |
6465 | return bfd_reloc_ok; | |
6466 | ||
0484b454 RL |
6467 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
6468 | if (is_local) | |
6469 | { | |
6470 | /* GD->LE relaxation: | |
2d0ca824 YN |
6471 | ldr xd, [gp, xn] => movk R0, #:tprel_g0_nc:var |
6472 | ||
6473 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
6474 | bfd_putl32 (movk_R0, contents + rel->r_offset); | |
0484b454 RL |
6475 | return bfd_reloc_continue; |
6476 | } | |
6477 | else | |
6478 | { | |
6479 | /* GD->IE relaxation: | |
2d0ca824 YN |
6480 | ldr xd, [gp, xn] => ldr R0, [gp, xn] |
6481 | ||
6482 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
0484b454 | 6483 | insn = bfd_getl32 (contents + rel->r_offset); |
2d0ca824 | 6484 | bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset); |
0484b454 RL |
6485 | return bfd_reloc_ok; |
6486 | } | |
6487 | ||
6488 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
6489 | /* GD->LE relaxation: | |
2d0ca824 | 6490 | movk xd, #:tlsdesc_off_g0_nc:var => movk R0, #:tprel_g1_nc:var, lsl #16 |
0484b454 | 6491 | GD->IE relaxation: |
2d0ca824 YN |
6492 | movk xd, #:tlsdesc_off_g0_nc:var => movk Rd, #:gottprel_g0_nc:var |
6493 | ||
6494 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
0484b454 | 6495 | if (is_local) |
2d0ca824 | 6496 | bfd_putl32 (ldr_hw_R0, contents + rel->r_offset); |
0484b454 RL |
6497 | return bfd_reloc_continue; |
6498 | ||
6499 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
6500 | if (is_local) | |
6501 | { | |
6502 | /* GD->LE relaxation: | |
2d0ca824 YN |
6503 | movz xd, #:tlsdesc_off_g1:var => movz R0, #:tprel_g2:var, lsl #32 |
6504 | ||
6505 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
6506 | bfd_putl32 (movz_hw_R0, contents + rel->r_offset); | |
0484b454 RL |
6507 | return bfd_reloc_continue; |
6508 | } | |
6509 | else | |
6510 | { | |
6511 | /* GD->IE relaxation: | |
2d0ca824 YN |
6512 | movz xd, #:tlsdesc_off_g1:var => movz Rd, #:gottprel_g1:var, lsl #16 |
6513 | ||
6514 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
0484b454 | 6515 | insn = bfd_getl32 (contents + rel->r_offset); |
2d0ca824 | 6516 | bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset); |
0484b454 RL |
6517 | return bfd_reloc_continue; |
6518 | } | |
6519 | ||
a6bb11b2 | 6520 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a06ea964 | 6521 | /* IE->LE relaxation: |
07d6d2b8 | 6522 | adrp xd, :gottprel:var => movz Rd, :tprel_g1:var |
2d0ca824 YN |
6523 | |
6524 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 NC |
6525 | if (is_local) |
6526 | { | |
6527 | insn = bfd_getl32 (contents + rel->r_offset); | |
2d0ca824 | 6528 | bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset); |
9fca35fc TC |
6529 | /* We have relaxed the adrp into a mov, we may have to clear any |
6530 | pending erratum fixes. */ | |
6531 | clear_erratum_843419_entry (globals, rel->r_offset, input_section); | |
a06ea964 NC |
6532 | } |
6533 | return bfd_reloc_continue; | |
6534 | ||
a6bb11b2 | 6535 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: |
a06ea964 | 6536 | /* IE->LE relaxation: |
07d6d2b8 | 6537 | ldr xd, [xm, #:gottprel_lo12:var] => movk Rd, :tprel_g0_nc:var |
2d0ca824 YN |
6538 | |
6539 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 NC |
6540 | if (is_local) |
6541 | { | |
6542 | insn = bfd_getl32 (contents + rel->r_offset); | |
2d0ca824 | 6543 | bfd_putl32 (movk_R0 | (insn & 0x1f), contents + rel->r_offset); |
a06ea964 NC |
6544 | } |
6545 | return bfd_reloc_continue; | |
6546 | ||
259364ad JW |
6547 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
6548 | /* LD->LE relaxation (tiny): | |
6549 | adr x0, :tlsldm:x => mrs x0, tpidr_el0 | |
c1fc2d7e YN |
6550 | bl __tls_get_addr => add R0, R0, TCB_SIZE |
6551 | ||
6552 | Where R is x for lp64 mode, and w for ilp32 mode. */ | |
259364ad JW |
6553 | if (is_local) |
6554 | { | |
6555 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6556 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); | |
6557 | /* No need of CALL26 relocation for tls_get_addr. */ | |
6558 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6559 | bfd_putl32 (0xd53bd040, contents + rel->r_offset + 0); | |
2d0ca824 YN |
6560 | bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10), |
6561 | contents + rel->r_offset + 4); | |
259364ad JW |
6562 | return bfd_reloc_ok; |
6563 | } | |
6564 | return bfd_reloc_continue; | |
6565 | ||
6566 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: | |
6567 | /* LD->LE relaxation (small): | |
6568 | adrp x0, :tlsldm:x => mrs x0, tpidr_el0 | |
6569 | */ | |
6570 | if (is_local) | |
6571 | { | |
6572 | bfd_putl32 (0xd53bd040, contents + rel->r_offset); | |
6573 | return bfd_reloc_ok; | |
6574 | } | |
6575 | return bfd_reloc_continue; | |
6576 | ||
6577 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: | |
6578 | /* LD->LE relaxation (small): | |
c1fc2d7e | 6579 | add x0, #:tlsldm_lo12:x => add R0, R0, TCB_SIZE |
259364ad | 6580 | bl __tls_get_addr => nop |
c1fc2d7e YN |
6581 | |
6582 | Where R is x for lp64 mode, and w for ilp32 mode. */ | |
259364ad JW |
6583 | if (is_local) |
6584 | { | |
6585 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6586 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); | |
6587 | /* No need of CALL26 relocation for tls_get_addr. */ | |
6588 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
2d0ca824 YN |
6589 | bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10), |
6590 | contents + rel->r_offset + 0); | |
c1fc2d7e | 6591 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4); |
259364ad JW |
6592 | return bfd_reloc_ok; |
6593 | } | |
6594 | return bfd_reloc_continue; | |
6595 | ||
a06ea964 NC |
6596 | default: |
6597 | return bfd_reloc_continue; | |
6598 | } | |
6599 | ||
6600 | return bfd_reloc_ok; | |
6601 | } | |
6602 | ||
6603 | /* Relocate an AArch64 ELF section. */ | |
6604 | ||
6605 | static bfd_boolean | |
cec5225b | 6606 | elfNN_aarch64_relocate_section (bfd *output_bfd, |
a06ea964 NC |
6607 | struct bfd_link_info *info, |
6608 | bfd *input_bfd, | |
6609 | asection *input_section, | |
6610 | bfd_byte *contents, | |
6611 | Elf_Internal_Rela *relocs, | |
6612 | Elf_Internal_Sym *local_syms, | |
6613 | asection **local_sections) | |
6614 | { | |
6615 | Elf_Internal_Shdr *symtab_hdr; | |
6616 | struct elf_link_hash_entry **sym_hashes; | |
6617 | Elf_Internal_Rela *rel; | |
6618 | Elf_Internal_Rela *relend; | |
6619 | const char *name; | |
cec5225b | 6620 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 NC |
6621 | bfd_boolean save_addend = FALSE; |
6622 | bfd_vma addend = 0; | |
6623 | ||
cec5225b | 6624 | globals = elf_aarch64_hash_table (info); |
a06ea964 NC |
6625 | |
6626 | symtab_hdr = &elf_symtab_hdr (input_bfd); | |
6627 | sym_hashes = elf_sym_hashes (input_bfd); | |
6628 | ||
6629 | rel = relocs; | |
6630 | relend = relocs + input_section->reloc_count; | |
6631 | for (; rel < relend; rel++) | |
6632 | { | |
6633 | unsigned int r_type; | |
a6bb11b2 YZ |
6634 | bfd_reloc_code_real_type bfd_r_type; |
6635 | bfd_reloc_code_real_type relaxed_bfd_r_type; | |
a06ea964 NC |
6636 | reloc_howto_type *howto; |
6637 | unsigned long r_symndx; | |
6638 | Elf_Internal_Sym *sym; | |
6639 | asection *sec; | |
6640 | struct elf_link_hash_entry *h; | |
6641 | bfd_vma relocation; | |
6642 | bfd_reloc_status_type r; | |
6643 | arelent bfd_reloc; | |
6644 | char sym_type; | |
6645 | bfd_boolean unresolved_reloc = FALSE; | |
6646 | char *error_message = NULL; | |
6647 | ||
cec5225b YZ |
6648 | r_symndx = ELFNN_R_SYM (rel->r_info); |
6649 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 | 6650 | |
0aa13fee AM |
6651 | bfd_reloc.howto = elfNN_aarch64_howto_from_type (input_bfd, r_type); |
6652 | howto = bfd_reloc.howto; | |
a06ea964 | 6653 | |
7fcfd62d | 6654 | if (howto == NULL) |
47aeb64c NC |
6655 | return _bfd_unrecognized_reloc (input_bfd, input_section, r_type); |
6656 | ||
a6bb11b2 | 6657 | bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto); |
7fcfd62d | 6658 | |
a06ea964 NC |
6659 | h = NULL; |
6660 | sym = NULL; | |
6661 | sec = NULL; | |
6662 | ||
6663 | if (r_symndx < symtab_hdr->sh_info) | |
6664 | { | |
6665 | sym = local_syms + r_symndx; | |
cec5225b | 6666 | sym_type = ELFNN_ST_TYPE (sym->st_info); |
a06ea964 NC |
6667 | sec = local_sections[r_symndx]; |
6668 | ||
6669 | /* An object file might have a reference to a local | |
6670 | undefined symbol. This is a daft object file, but we | |
6671 | should at least do something about it. */ | |
6672 | if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL | |
6673 | && bfd_is_und_section (sec) | |
6674 | && ELF_ST_BIND (sym->st_info) != STB_WEAK) | |
1a72702b AM |
6675 | (*info->callbacks->undefined_symbol) |
6676 | (info, bfd_elf_string_from_elf_section | |
6677 | (input_bfd, symtab_hdr->sh_link, sym->st_name), | |
6678 | input_bfd, input_section, rel->r_offset, TRUE); | |
a06ea964 | 6679 | |
a06ea964 | 6680 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
1419bbe5 WN |
6681 | |
6682 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
0e1862bb | 6683 | if (!bfd_link_relocatable (info) |
1419bbe5 WN |
6684 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
6685 | { | |
6686 | h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd, | |
6687 | rel, FALSE); | |
6688 | if (h == NULL) | |
6689 | abort (); | |
6690 | ||
6691 | /* Set STT_GNU_IFUNC symbol value. */ | |
6692 | h->root.u.def.value = sym->st_value; | |
6693 | h->root.u.def.section = sec; | |
6694 | } | |
a06ea964 NC |
6695 | } |
6696 | else | |
6697 | { | |
62d887d4 | 6698 | bfd_boolean warned, ignored; |
a06ea964 NC |
6699 | |
6700 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
6701 | r_symndx, symtab_hdr, sym_hashes, | |
6702 | h, sec, relocation, | |
62d887d4 | 6703 | unresolved_reloc, warned, ignored); |
a06ea964 NC |
6704 | |
6705 | sym_type = h->type; | |
6706 | } | |
6707 | ||
6708 | if (sec != NULL && discarded_section (sec)) | |
6709 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
6710 | rel, 1, relend, howto, 0, contents); | |
6711 | ||
0e1862bb | 6712 | if (bfd_link_relocatable (info)) |
2e0488d3 | 6713 | continue; |
a06ea964 NC |
6714 | |
6715 | if (h != NULL) | |
6716 | name = h->root.root.string; | |
6717 | else | |
6718 | { | |
6719 | name = (bfd_elf_string_from_elf_section | |
6720 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
6721 | if (name == NULL || *name == '\0') | |
6722 | name = bfd_section_name (input_bfd, sec); | |
6723 | } | |
6724 | ||
6725 | if (r_symndx != 0 | |
6726 | && r_type != R_AARCH64_NONE | |
6727 | && r_type != R_AARCH64_NULL | |
6728 | && (h == NULL | |
6729 | || h->root.type == bfd_link_hash_defined | |
6730 | || h->root.type == bfd_link_hash_defweak) | |
a6bb11b2 | 6731 | && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS)) |
a06ea964 | 6732 | { |
4eca0228 | 6733 | _bfd_error_handler |
a06ea964 | 6734 | ((sym_type == STT_TLS |
695344c0 | 6735 | /* xgettext:c-format */ |
2dcf00ce | 6736 | ? _("%pB(%pA+%#" PRIx64 "): %s used with TLS symbol %s") |
695344c0 | 6737 | /* xgettext:c-format */ |
2dcf00ce | 6738 | : _("%pB(%pA+%#" PRIx64 "): %s used with non-TLS symbol %s")), |
a06ea964 | 6739 | input_bfd, |
2dcf00ce | 6740 | input_section, (uint64_t) rel->r_offset, howto->name, name); |
a06ea964 NC |
6741 | } |
6742 | ||
a06ea964 | 6743 | /* We relax only if we can see that there can be a valid transition |
07d6d2b8 AM |
6744 | from a reloc type to another. |
6745 | We call elfNN_aarch64_final_link_relocate unless we're completely | |
6746 | done, i.e., the relaxation produced the final output we want. */ | |
a06ea964 | 6747 | |
a6bb11b2 YZ |
6748 | relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, |
6749 | h, r_symndx); | |
6750 | if (relaxed_bfd_r_type != bfd_r_type) | |
a06ea964 | 6751 | { |
a6bb11b2 YZ |
6752 | bfd_r_type = relaxed_bfd_r_type; |
6753 | howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type); | |
6754 | BFD_ASSERT (howto != NULL); | |
6755 | r_type = howto->type; | |
9fca35fc TC |
6756 | r = elfNN_aarch64_tls_relax (globals, input_bfd, input_section, |
6757 | contents, rel, h); | |
a06ea964 NC |
6758 | unresolved_reloc = 0; |
6759 | } | |
6760 | else | |
6761 | r = bfd_reloc_continue; | |
6762 | ||
6763 | /* There may be multiple consecutive relocations for the | |
07d6d2b8 AM |
6764 | same offset. In that case we are supposed to treat the |
6765 | output of each relocation as the addend for the next. */ | |
a06ea964 NC |
6766 | if (rel + 1 < relend |
6767 | && rel->r_offset == rel[1].r_offset | |
cec5225b YZ |
6768 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE |
6769 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL) | |
a06ea964 NC |
6770 | save_addend = TRUE; |
6771 | else | |
6772 | save_addend = FALSE; | |
6773 | ||
6774 | if (r == bfd_reloc_continue) | |
cec5225b | 6775 | r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd, |
a06ea964 NC |
6776 | input_section, contents, rel, |
6777 | relocation, info, sec, | |
6778 | h, &unresolved_reloc, | |
1419bbe5 | 6779 | save_addend, &addend, sym); |
a06ea964 | 6780 | |
0aa13fee | 6781 | switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type)) |
a06ea964 | 6782 | { |
ce336788 | 6783 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 6784 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 6785 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 6786 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 6787 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
73f925cc | 6788 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 6789 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 6790 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
6791 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
6792 | { | |
6793 | bfd_boolean need_relocs = FALSE; | |
6794 | bfd_byte *loc; | |
6795 | int indx; | |
6796 | bfd_vma off; | |
6797 | ||
6798 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
6799 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
6800 | ||
6801 | need_relocs = | |
6dda7875 | 6802 | (!bfd_link_executable (info) || indx != 0) && |
a06ea964 NC |
6803 | (h == NULL |
6804 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6805 | || h->root.type != bfd_link_hash_undefweak); | |
6806 | ||
6807 | BFD_ASSERT (globals->root.srelgot != NULL); | |
6808 | ||
6809 | if (need_relocs) | |
6810 | { | |
6811 | Elf_Internal_Rela rela; | |
a6bb11b2 | 6812 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD)); |
a06ea964 NC |
6813 | rela.r_addend = 0; |
6814 | rela.r_offset = globals->root.sgot->output_section->vma + | |
6815 | globals->root.sgot->output_offset + off; | |
6816 | ||
6817 | ||
6818 | loc = globals->root.srelgot->contents; | |
6819 | loc += globals->root.srelgot->reloc_count++ | |
6820 | * RELOC_SIZE (htab); | |
cec5225b | 6821 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 6822 | |
f69e4920 | 6823 | bfd_reloc_code_real_type real_type = |
0aa13fee | 6824 | elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
f69e4920 JW |
6825 | |
6826 | if (real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 | |
73f925cc JW |
6827 | || real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 |
6828 | || real_type == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC) | |
77a69ff8 JW |
6829 | { |
6830 | /* For local dynamic, don't generate DTPREL in any case. | |
6831 | Initialize the DTPREL slot into zero, so we get module | |
6832 | base address when invoke runtime TLS resolver. */ | |
6833 | bfd_put_NN (output_bfd, 0, | |
6834 | globals->root.sgot->contents + off | |
6835 | + GOT_ENTRY_SIZE); | |
6836 | } | |
6837 | else if (indx == 0) | |
a06ea964 | 6838 | { |
cec5225b | 6839 | bfd_put_NN (output_bfd, |
a06ea964 NC |
6840 | relocation - dtpoff_base (info), |
6841 | globals->root.sgot->contents + off | |
6842 | + GOT_ENTRY_SIZE); | |
6843 | } | |
6844 | else | |
6845 | { | |
6846 | /* This TLS symbol is global. We emit a | |
6847 | relocation to fixup the tls offset at load | |
6848 | time. */ | |
6849 | rela.r_info = | |
a6bb11b2 | 6850 | ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL)); |
a06ea964 NC |
6851 | rela.r_addend = 0; |
6852 | rela.r_offset = | |
6853 | (globals->root.sgot->output_section->vma | |
6854 | + globals->root.sgot->output_offset + off | |
6855 | + GOT_ENTRY_SIZE); | |
6856 | ||
6857 | loc = globals->root.srelgot->contents; | |
6858 | loc += globals->root.srelgot->reloc_count++ | |
6859 | * RELOC_SIZE (globals); | |
cec5225b YZ |
6860 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
6861 | bfd_put_NN (output_bfd, (bfd_vma) 0, | |
a06ea964 NC |
6862 | globals->root.sgot->contents + off |
6863 | + GOT_ENTRY_SIZE); | |
6864 | } | |
6865 | } | |
6866 | else | |
6867 | { | |
cec5225b | 6868 | bfd_put_NN (output_bfd, (bfd_vma) 1, |
a06ea964 | 6869 | globals->root.sgot->contents + off); |
cec5225b | 6870 | bfd_put_NN (output_bfd, |
a06ea964 NC |
6871 | relocation - dtpoff_base (info), |
6872 | globals->root.sgot->contents + off | |
6873 | + GOT_ENTRY_SIZE); | |
6874 | } | |
6875 | ||
6876 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
6877 | } | |
6878 | break; | |
6879 | ||
a6bb11b2 YZ |
6880 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
6881 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
043bf05a | 6882 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
6883 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
6884 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
a06ea964 NC |
6885 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
6886 | { | |
6887 | bfd_boolean need_relocs = FALSE; | |
6888 | bfd_byte *loc; | |
6889 | int indx; | |
6890 | bfd_vma off; | |
6891 | ||
6892 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
6893 | ||
6894 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
6895 | ||
6896 | need_relocs = | |
6dda7875 | 6897 | (!bfd_link_executable (info) || indx != 0) && |
a06ea964 NC |
6898 | (h == NULL |
6899 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6900 | || h->root.type != bfd_link_hash_undefweak); | |
6901 | ||
6902 | BFD_ASSERT (globals->root.srelgot != NULL); | |
6903 | ||
6904 | if (need_relocs) | |
6905 | { | |
6906 | Elf_Internal_Rela rela; | |
6907 | ||
6908 | if (indx == 0) | |
6909 | rela.r_addend = relocation - dtpoff_base (info); | |
6910 | else | |
6911 | rela.r_addend = 0; | |
6912 | ||
a6bb11b2 | 6913 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL)); |
a06ea964 NC |
6914 | rela.r_offset = globals->root.sgot->output_section->vma + |
6915 | globals->root.sgot->output_offset + off; | |
6916 | ||
6917 | loc = globals->root.srelgot->contents; | |
6918 | loc += globals->root.srelgot->reloc_count++ | |
6919 | * RELOC_SIZE (htab); | |
6920 | ||
cec5225b | 6921 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 6922 | |
cec5225b | 6923 | bfd_put_NN (output_bfd, rela.r_addend, |
a06ea964 NC |
6924 | globals->root.sgot->contents + off); |
6925 | } | |
6926 | else | |
cec5225b | 6927 | bfd_put_NN (output_bfd, relocation - tpoff_base (info), |
a06ea964 NC |
6928 | globals->root.sgot->contents + off); |
6929 | ||
6930 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
6931 | } | |
6932 | break; | |
6933 | ||
f955cccf | 6934 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 6935 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 6936 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 6937 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
1ada945d | 6938 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
6939 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
6940 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a06ea964 NC |
6941 | if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx)) |
6942 | { | |
6943 | bfd_boolean need_relocs = FALSE; | |
6944 | int indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
6945 | bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx); | |
6946 | ||
6947 | need_relocs = (h == NULL | |
6948 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6949 | || h->root.type != bfd_link_hash_undefweak); | |
6950 | ||
6951 | BFD_ASSERT (globals->root.srelgot != NULL); | |
6952 | BFD_ASSERT (globals->root.sgot != NULL); | |
6953 | ||
6954 | if (need_relocs) | |
6955 | { | |
6956 | bfd_byte *loc; | |
6957 | Elf_Internal_Rela rela; | |
a6bb11b2 YZ |
6958 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC)); |
6959 | ||
a06ea964 NC |
6960 | rela.r_addend = 0; |
6961 | rela.r_offset = (globals->root.sgotplt->output_section->vma | |
6962 | + globals->root.sgotplt->output_offset | |
6963 | + off + globals->sgotplt_jump_table_size); | |
6964 | ||
6965 | if (indx == 0) | |
6966 | rela.r_addend = relocation - dtpoff_base (info); | |
6967 | ||
6968 | /* Allocate the next available slot in the PLT reloc | |
6969 | section to hold our R_AARCH64_TLSDESC, the next | |
6970 | available slot is determined from reloc_count, | |
6971 | which we step. But note, reloc_count was | |
6972 | artifically moved down while allocating slots for | |
6973 | real PLT relocs such that all of the PLT relocs | |
6974 | will fit above the initial reloc_count and the | |
6975 | extra stuff will fit below. */ | |
6976 | loc = globals->root.srelplt->contents; | |
6977 | loc += globals->root.srelplt->reloc_count++ | |
6978 | * RELOC_SIZE (globals); | |
6979 | ||
cec5225b | 6980 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 6981 | |
cec5225b | 6982 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
6983 | globals->root.sgotplt->contents + off + |
6984 | globals->sgotplt_jump_table_size); | |
cec5225b | 6985 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
6986 | globals->root.sgotplt->contents + off + |
6987 | globals->sgotplt_jump_table_size + | |
6988 | GOT_ENTRY_SIZE); | |
6989 | } | |
6990 | ||
6991 | symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx); | |
6992 | } | |
6993 | break; | |
a6bb11b2 YZ |
6994 | default: |
6995 | break; | |
a06ea964 NC |
6996 | } |
6997 | ||
a06ea964 | 6998 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
07d6d2b8 AM |
6999 | because such sections are not SEC_ALLOC and thus ld.so will |
7000 | not process them. */ | |
a06ea964 NC |
7001 | if (unresolved_reloc |
7002 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
7003 | && h->def_dynamic) | |
7004 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
7005 | +rel->r_offset) != (bfd_vma) - 1) | |
7006 | { | |
4eca0228 | 7007 | _bfd_error_handler |
695344c0 | 7008 | /* xgettext:c-format */ |
2dcf00ce AM |
7009 | (_("%pB(%pA+%#" PRIx64 "): " |
7010 | "unresolvable %s relocation against symbol `%s'"), | |
7011 | input_bfd, input_section, (uint64_t) rel->r_offset, howto->name, | |
a06ea964 NC |
7012 | h->root.root.string); |
7013 | return FALSE; | |
7014 | } | |
7015 | ||
7016 | if (r != bfd_reloc_ok && r != bfd_reloc_continue) | |
7017 | { | |
c674f5cd | 7018 | bfd_reloc_code_real_type real_r_type |
0aa13fee | 7019 | = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
c674f5cd | 7020 | |
a06ea964 NC |
7021 | switch (r) |
7022 | { | |
7023 | case bfd_reloc_overflow: | |
1a72702b AM |
7024 | (*info->callbacks->reloc_overflow) |
7025 | (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, | |
7026 | input_bfd, input_section, rel->r_offset); | |
c674f5cd JW |
7027 | if (real_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
7028 | || real_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
7029 | { | |
7030 | (*info->callbacks->warning) | |
7031 | (info, | |
90b6238f | 7032 | _("too many GOT entries for -fpic, " |
c674f5cd JW |
7033 | "please recompile with -fPIC"), |
7034 | name, input_bfd, input_section, rel->r_offset); | |
7035 | return FALSE; | |
7036 | } | |
027e9c75 NC |
7037 | /* Overflow can occur when a variable is referenced with a type |
7038 | that has a larger alignment than the type with which it was | |
7039 | declared. eg: | |
7040 | file1.c: extern int foo; int a (void) { return foo; } | |
7041 | file2.c: char bar, foo, baz; | |
7042 | If the variable is placed into a data section at an offset | |
7043 | that is incompatible with the larger alignment requirement | |
7044 | overflow will occur. (Strictly speaking this is not overflow | |
7045 | but rather an alignment problem, but the bfd_reloc_ error | |
7046 | enum does not have a value to cover that situation). | |
7047 | ||
7048 | Try to catch this situation here and provide a more helpful | |
7049 | error message to the user. */ | |
7050 | if (addend & ((1 << howto->rightshift) - 1) | |
7051 | /* FIXME: Are we testing all of the appropriate reloc | |
7052 | types here ? */ | |
7053 | && (real_r_type == BFD_RELOC_AARCH64_LD_LO19_PCREL | |
7054 | || real_r_type == BFD_RELOC_AARCH64_LDST16_LO12 | |
7055 | || real_r_type == BFD_RELOC_AARCH64_LDST32_LO12 | |
7056 | || real_r_type == BFD_RELOC_AARCH64_LDST64_LO12 | |
7057 | || real_r_type == BFD_RELOC_AARCH64_LDST128_LO12)) | |
7058 | { | |
7059 | info->callbacks->warning | |
90b6238f | 7060 | (info, _("one possible cause of this error is that the \ |
027e9c75 | 7061 | symbol is being referenced in the indicated code as if it had a larger \ |
90b6238f | 7062 | alignment than was declared where it was defined"), |
027e9c75 NC |
7063 | name, input_bfd, input_section, rel->r_offset); |
7064 | } | |
a06ea964 NC |
7065 | break; |
7066 | ||
7067 | case bfd_reloc_undefined: | |
1a72702b AM |
7068 | (*info->callbacks->undefined_symbol) |
7069 | (info, name, input_bfd, input_section, rel->r_offset, TRUE); | |
a06ea964 NC |
7070 | break; |
7071 | ||
7072 | case bfd_reloc_outofrange: | |
7073 | error_message = _("out of range"); | |
7074 | goto common_error; | |
7075 | ||
7076 | case bfd_reloc_notsupported: | |
7077 | error_message = _("unsupported relocation"); | |
7078 | goto common_error; | |
7079 | ||
7080 | case bfd_reloc_dangerous: | |
7081 | /* error_message should already be set. */ | |
7082 | goto common_error; | |
7083 | ||
7084 | default: | |
7085 | error_message = _("unknown error"); | |
7086 | /* Fall through. */ | |
7087 | ||
7088 | common_error: | |
7089 | BFD_ASSERT (error_message != NULL); | |
1a72702b AM |
7090 | (*info->callbacks->reloc_dangerous) |
7091 | (info, error_message, input_bfd, input_section, rel->r_offset); | |
a06ea964 NC |
7092 | break; |
7093 | } | |
7094 | } | |
027e9c75 NC |
7095 | |
7096 | if (!save_addend) | |
7097 | addend = 0; | |
a06ea964 NC |
7098 | } |
7099 | ||
7100 | return TRUE; | |
7101 | } | |
7102 | ||
7103 | /* Set the right machine number. */ | |
7104 | ||
7105 | static bfd_boolean | |
cec5225b | 7106 | elfNN_aarch64_object_p (bfd *abfd) |
a06ea964 | 7107 | { |
cec5225b YZ |
7108 | #if ARCH_SIZE == 32 |
7109 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32); | |
7110 | #else | |
a06ea964 | 7111 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64); |
cec5225b | 7112 | #endif |
a06ea964 NC |
7113 | return TRUE; |
7114 | } | |
7115 | ||
7116 | /* Function to keep AArch64 specific flags in the ELF header. */ | |
7117 | ||
7118 | static bfd_boolean | |
cec5225b | 7119 | elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags) |
a06ea964 NC |
7120 | { |
7121 | if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags) | |
7122 | { | |
7123 | } | |
7124 | else | |
7125 | { | |
7126 | elf_elfheader (abfd)->e_flags = flags; | |
7127 | elf_flags_init (abfd) = TRUE; | |
7128 | } | |
7129 | ||
7130 | return TRUE; | |
7131 | } | |
7132 | ||
a06ea964 NC |
7133 | /* Merge backend specific data from an object file to the output |
7134 | object file when linking. */ | |
7135 | ||
7136 | static bfd_boolean | |
50e03d47 | 7137 | elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
a06ea964 | 7138 | { |
50e03d47 | 7139 | bfd *obfd = info->output_bfd; |
a06ea964 NC |
7140 | flagword out_flags; |
7141 | flagword in_flags; | |
7142 | bfd_boolean flags_compatible = TRUE; | |
7143 | asection *sec; | |
7144 | ||
7145 | /* Check if we have the same endianess. */ | |
50e03d47 | 7146 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
a06ea964 NC |
7147 | return FALSE; |
7148 | ||
7149 | if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd)) | |
7150 | return TRUE; | |
7151 | ||
7152 | /* The input BFD must have had its flags initialised. */ | |
7153 | /* The following seems bogus to me -- The flags are initialized in | |
7154 | the assembler but I don't think an elf_flags_init field is | |
7155 | written into the object. */ | |
7156 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ | |
7157 | ||
7158 | in_flags = elf_elfheader (ibfd)->e_flags; | |
7159 | out_flags = elf_elfheader (obfd)->e_flags; | |
7160 | ||
7161 | if (!elf_flags_init (obfd)) | |
7162 | { | |
7163 | /* If the input is the default architecture and had the default | |
07d6d2b8 AM |
7164 | flags then do not bother setting the flags for the output |
7165 | architecture, instead allow future merges to do this. If no | |
7166 | future merges ever set these flags then they will retain their | |
7167 | uninitialised values, which surprise surprise, correspond | |
7168 | to the default values. */ | |
a06ea964 NC |
7169 | if (bfd_get_arch_info (ibfd)->the_default |
7170 | && elf_elfheader (ibfd)->e_flags == 0) | |
7171 | return TRUE; | |
7172 | ||
7173 | elf_flags_init (obfd) = TRUE; | |
7174 | elf_elfheader (obfd)->e_flags = in_flags; | |
7175 | ||
7176 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
7177 | && bfd_get_arch_info (obfd)->the_default) | |
7178 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
7179 | bfd_get_mach (ibfd)); | |
7180 | ||
7181 | return TRUE; | |
7182 | } | |
7183 | ||
7184 | /* Identical flags must be compatible. */ | |
7185 | if (in_flags == out_flags) | |
7186 | return TRUE; | |
7187 | ||
7188 | /* Check to see if the input BFD actually contains any sections. If | |
7189 | not, its flags may not have been initialised either, but it | |
7190 | cannot actually cause any incompatiblity. Do not short-circuit | |
7191 | dynamic objects; their section list may be emptied by | |
7192 | elf_link_add_object_symbols. | |
7193 | ||
7194 | Also check to see if there are no code sections in the input. | |
7195 | In this case there is no need to check for code specific flags. | |
7196 | XXX - do we need to worry about floating-point format compatability | |
7197 | in data sections ? */ | |
7198 | if (!(ibfd->flags & DYNAMIC)) | |
7199 | { | |
7200 | bfd_boolean null_input_bfd = TRUE; | |
7201 | bfd_boolean only_data_sections = TRUE; | |
7202 | ||
7203 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7204 | { | |
7205 | if ((bfd_get_section_flags (ibfd, sec) | |
7206 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
7207 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
7208 | only_data_sections = FALSE; | |
7209 | ||
7210 | null_input_bfd = FALSE; | |
7211 | break; | |
7212 | } | |
7213 | ||
7214 | if (null_input_bfd || only_data_sections) | |
7215 | return TRUE; | |
7216 | } | |
7217 | ||
7218 | return flags_compatible; | |
7219 | } | |
7220 | ||
7221 | /* Display the flags field. */ | |
7222 | ||
7223 | static bfd_boolean | |
cec5225b | 7224 | elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr) |
a06ea964 NC |
7225 | { |
7226 | FILE *file = (FILE *) ptr; | |
7227 | unsigned long flags; | |
7228 | ||
7229 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
7230 | ||
7231 | /* Print normal ELF private data. */ | |
7232 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
7233 | ||
7234 | flags = elf_elfheader (abfd)->e_flags; | |
7235 | /* Ignore init flag - it may not be set, despite the flags field | |
7236 | containing valid data. */ | |
7237 | ||
7238 | /* xgettext:c-format */ | |
7239 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
7240 | ||
7241 | if (flags) | |
7242 | fprintf (file, _("<Unrecognised flag bits set>")); | |
7243 | ||
7244 | fputc ('\n', file); | |
7245 | ||
7246 | return TRUE; | |
7247 | } | |
7248 | ||
63c1f59d AM |
7249 | /* Find dynamic relocs for H that apply to read-only sections. */ |
7250 | ||
7251 | static asection * | |
7252 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
7253 | { | |
7254 | struct elf_dyn_relocs *p; | |
7255 | ||
7256 | for (p = elf_aarch64_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
7257 | { | |
7258 | asection *s = p->sec->output_section; | |
7259 | ||
7260 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7261 | return p->sec; | |
7262 | } | |
7263 | return NULL; | |
7264 | } | |
7265 | ||
6353d82b JW |
7266 | /* Return true if we need copy relocation against EH. */ |
7267 | ||
7268 | static bfd_boolean | |
7269 | need_copy_relocation_p (struct elf_aarch64_link_hash_entry *eh) | |
7270 | { | |
7271 | struct elf_dyn_relocs *p; | |
7272 | asection *s; | |
7273 | ||
7274 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7275 | { | |
7276 | /* If there is any pc-relative reference, we need to keep copy relocation | |
7277 | to avoid propagating the relocation into runtime that current glibc | |
7278 | does not support. */ | |
7279 | if (p->pc_count) | |
7280 | return TRUE; | |
7281 | ||
7282 | s = p->sec->output_section; | |
7283 | /* Need copy relocation if it's against read-only section. */ | |
7284 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7285 | return TRUE; | |
7286 | } | |
7287 | ||
7288 | return FALSE; | |
7289 | } | |
7290 | ||
a06ea964 NC |
7291 | /* Adjust a symbol defined by a dynamic object and referenced by a |
7292 | regular object. The current definition is in some section of the | |
7293 | dynamic object, but we're not including those sections. We have to | |
7294 | change the definition to something the rest of the link can | |
7295 | understand. */ | |
7296 | ||
7297 | static bfd_boolean | |
cec5225b | 7298 | elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info, |
a06ea964 NC |
7299 | struct elf_link_hash_entry *h) |
7300 | { | |
cec5225b | 7301 | struct elf_aarch64_link_hash_table *htab; |
5474d94f | 7302 | asection *s, *srel; |
a06ea964 NC |
7303 | |
7304 | /* If this is a function, put it in the procedure linkage table. We | |
7305 | will fill in the contents of the procedure linkage table later, | |
7306 | when we know the address of the .got section. */ | |
1419bbe5 | 7307 | if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt) |
a06ea964 NC |
7308 | { |
7309 | if (h->plt.refcount <= 0 | |
1419bbe5 WN |
7310 | || (h->type != STT_GNU_IFUNC |
7311 | && (SYMBOL_CALLS_LOCAL (info, h) | |
7312 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
7313 | && h->root.type == bfd_link_hash_undefweak)))) | |
a06ea964 NC |
7314 | { |
7315 | /* This case can occur if we saw a CALL26 reloc in | |
7316 | an input file, but the symbol wasn't referred to | |
7317 | by a dynamic object or all references were | |
7318 | garbage collected. In which case we can end up | |
7319 | resolving. */ | |
7320 | h->plt.offset = (bfd_vma) - 1; | |
7321 | h->needs_plt = 0; | |
7322 | } | |
7323 | ||
7324 | return TRUE; | |
7325 | } | |
7326 | else | |
80de0c6d | 7327 | /* Otherwise, reset to -1. */ |
a06ea964 NC |
7328 | h->plt.offset = (bfd_vma) - 1; |
7329 | ||
7330 | ||
7331 | /* If this is a weak symbol, and there is a real definition, the | |
7332 | processor independent code will have arranged for us to see the | |
7333 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 7334 | if (h->is_weakalias) |
a06ea964 | 7335 | { |
60d67dc8 AM |
7336 | struct elf_link_hash_entry *def = weakdef (h); |
7337 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
7338 | h->root.u.def.section = def->root.u.def.section; | |
7339 | h->root.u.def.value = def->root.u.def.value; | |
a06ea964 | 7340 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
60d67dc8 | 7341 | h->non_got_ref = def->non_got_ref; |
a06ea964 NC |
7342 | return TRUE; |
7343 | } | |
7344 | ||
7345 | /* If we are creating a shared library, we must presume that the | |
7346 | only references to the symbol are via the global offset table. | |
7347 | For such cases we need not do anything here; the relocations will | |
7348 | be handled correctly by relocate_section. */ | |
0e1862bb | 7349 | if (bfd_link_pic (info)) |
a06ea964 NC |
7350 | return TRUE; |
7351 | ||
7352 | /* If there are no references to this symbol that do not use the | |
7353 | GOT, we don't need to generate a copy reloc. */ | |
7354 | if (!h->non_got_ref) | |
7355 | return TRUE; | |
7356 | ||
7357 | /* If -z nocopyreloc was given, we won't generate them either. */ | |
7358 | if (info->nocopyreloc) | |
7359 | { | |
7360 | h->non_got_ref = 0; | |
7361 | return TRUE; | |
7362 | } | |
7363 | ||
6353d82b JW |
7364 | if (ELIMINATE_COPY_RELOCS) |
7365 | { | |
7366 | struct elf_aarch64_link_hash_entry *eh; | |
dce2246a | 7367 | /* If we don't find any dynamic relocs in read-only sections, then |
6353d82b JW |
7368 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
7369 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
7370 | if (!need_copy_relocation_p (eh)) | |
7371 | { | |
7372 | h->non_got_ref = 0; | |
7373 | return TRUE; | |
7374 | } | |
7375 | } | |
7376 | ||
a06ea964 NC |
7377 | /* We must allocate the symbol in our .dynbss section, which will |
7378 | become part of the .bss section of the executable. There will be | |
7379 | an entry for this symbol in the .dynsym section. The dynamic | |
7380 | object will contain position independent code, so all references | |
7381 | from the dynamic object to this symbol will go through the global | |
7382 | offset table. The dynamic linker will use the .dynsym entry to | |
7383 | determine the address it must put in the global offset table, so | |
7384 | both the dynamic object and the regular object will refer to the | |
7385 | same memory location for the variable. */ | |
7386 | ||
cec5225b | 7387 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7388 | |
7389 | /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker | |
7390 | to copy the initial value out of the dynamic object and into the | |
7391 | runtime process image. */ | |
5474d94f AM |
7392 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
7393 | { | |
7394 | s = htab->root.sdynrelro; | |
7395 | srel = htab->root.sreldynrelro; | |
7396 | } | |
7397 | else | |
7398 | { | |
7399 | s = htab->root.sdynbss; | |
7400 | srel = htab->root.srelbss; | |
7401 | } | |
a06ea964 NC |
7402 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
7403 | { | |
5474d94f | 7404 | srel->size += RELOC_SIZE (htab); |
a06ea964 NC |
7405 | h->needs_copy = 1; |
7406 | } | |
7407 | ||
6cabe1ea | 7408 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
a06ea964 NC |
7409 | |
7410 | } | |
7411 | ||
7412 | static bfd_boolean | |
cec5225b | 7413 | elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number) |
a06ea964 NC |
7414 | { |
7415 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 7416 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
7417 | if (locals == NULL) |
7418 | { | |
7419 | locals = (struct elf_aarch64_local_symbol *) | |
7420 | bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol)); | |
7421 | if (locals == NULL) | |
7422 | return FALSE; | |
cec5225b | 7423 | elf_aarch64_locals (abfd) = locals; |
a06ea964 NC |
7424 | } |
7425 | return TRUE; | |
7426 | } | |
7427 | ||
cc0efaa8 MS |
7428 | /* Create the .got section to hold the global offset table. */ |
7429 | ||
7430 | static bfd_boolean | |
7431 | aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) | |
7432 | { | |
7433 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7434 | flagword flags; | |
7435 | asection *s; | |
7436 | struct elf_link_hash_entry *h; | |
7437 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
7438 | ||
7439 | /* This function may be called more than once. */ | |
ce558b89 | 7440 | if (htab->sgot != NULL) |
cc0efaa8 MS |
7441 | return TRUE; |
7442 | ||
7443 | flags = bed->dynamic_sec_flags; | |
7444 | ||
7445 | s = bfd_make_section_anyway_with_flags (abfd, | |
7446 | (bed->rela_plts_and_copies_p | |
7447 | ? ".rela.got" : ".rel.got"), | |
7448 | (bed->dynamic_sec_flags | |
7449 | | SEC_READONLY)); | |
7450 | if (s == NULL | |
7451 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
7452 | return FALSE; | |
7453 | htab->srelgot = s; | |
7454 | ||
7455 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); | |
7456 | if (s == NULL | |
7457 | || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
7458 | return FALSE; | |
7459 | htab->sgot = s; | |
7460 | htab->sgot->size += GOT_ENTRY_SIZE; | |
7461 | ||
7462 | if (bed->want_got_sym) | |
7463 | { | |
7464 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
7465 | (or .got.plt) section. We don't do this in the linker script | |
7466 | because we don't want to define the symbol if we are not creating | |
7467 | a global offset table. */ | |
7468 | h = _bfd_elf_define_linkage_sym (abfd, info, s, | |
7469 | "_GLOBAL_OFFSET_TABLE_"); | |
7470 | elf_hash_table (info)->hgot = h; | |
7471 | if (h == NULL) | |
7472 | return FALSE; | |
7473 | } | |
7474 | ||
7475 | if (bed->want_got_plt) | |
7476 | { | |
7477 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); | |
7478 | if (s == NULL | |
7479 | || !bfd_set_section_alignment (abfd, s, | |
7480 | bed->s->log_file_align)) | |
7481 | return FALSE; | |
7482 | htab->sgotplt = s; | |
7483 | } | |
7484 | ||
7485 | /* The first bit of the global offset table is the header. */ | |
7486 | s->size += bed->got_header_size; | |
7487 | ||
7488 | return TRUE; | |
7489 | } | |
7490 | ||
a06ea964 NC |
7491 | /* Look through the relocs for a section during the first phase. */ |
7492 | ||
7493 | static bfd_boolean | |
cec5225b | 7494 | elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
a06ea964 NC |
7495 | asection *sec, const Elf_Internal_Rela *relocs) |
7496 | { | |
7497 | Elf_Internal_Shdr *symtab_hdr; | |
7498 | struct elf_link_hash_entry **sym_hashes; | |
7499 | const Elf_Internal_Rela *rel; | |
7500 | const Elf_Internal_Rela *rel_end; | |
7501 | asection *sreloc; | |
7502 | ||
cec5225b | 7503 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 7504 | |
0e1862bb | 7505 | if (bfd_link_relocatable (info)) |
a06ea964 NC |
7506 | return TRUE; |
7507 | ||
7508 | BFD_ASSERT (is_aarch64_elf (abfd)); | |
7509 | ||
cec5225b | 7510 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7511 | sreloc = NULL; |
7512 | ||
7513 | symtab_hdr = &elf_symtab_hdr (abfd); | |
7514 | sym_hashes = elf_sym_hashes (abfd); | |
a06ea964 NC |
7515 | |
7516 | rel_end = relocs + sec->reloc_count; | |
7517 | for (rel = relocs; rel < rel_end; rel++) | |
7518 | { | |
7519 | struct elf_link_hash_entry *h; | |
d42c267e | 7520 | unsigned int r_symndx; |
a06ea964 | 7521 | unsigned int r_type; |
a6bb11b2 | 7522 | bfd_reloc_code_real_type bfd_r_type; |
1419bbe5 | 7523 | Elf_Internal_Sym *isym; |
a06ea964 | 7524 | |
cec5225b YZ |
7525 | r_symndx = ELFNN_R_SYM (rel->r_info); |
7526 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 NC |
7527 | |
7528 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
7529 | { | |
695344c0 | 7530 | /* xgettext:c-format */ |
871b3ab2 | 7531 | _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd, r_symndx); |
a06ea964 NC |
7532 | return FALSE; |
7533 | } | |
7534 | ||
ed5acf27 | 7535 | if (r_symndx < symtab_hdr->sh_info) |
1419bbe5 WN |
7536 | { |
7537 | /* A local symbol. */ | |
7538 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
7539 | abfd, r_symndx); | |
7540 | if (isym == NULL) | |
7541 | return FALSE; | |
7542 | ||
7543 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
7544 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
7545 | { | |
7546 | h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, | |
7547 | TRUE); | |
7548 | if (h == NULL) | |
7549 | return FALSE; | |
7550 | ||
7551 | /* Fake a STT_GNU_IFUNC symbol. */ | |
7552 | h->type = STT_GNU_IFUNC; | |
7553 | h->def_regular = 1; | |
7554 | h->ref_regular = 1; | |
7555 | h->forced_local = 1; | |
7556 | h->root.type = bfd_link_hash_defined; | |
7557 | } | |
7558 | else | |
7559 | h = NULL; | |
7560 | } | |
a06ea964 NC |
7561 | else |
7562 | { | |
7563 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
7564 | while (h->root.type == bfd_link_hash_indirect | |
7565 | || h->root.type == bfd_link_hash_warning) | |
7566 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7567 | } | |
7568 | ||
7569 | /* Could be done earlier, if h were already available. */ | |
a6bb11b2 | 7570 | bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx); |
a06ea964 | 7571 | |
1419bbe5 WN |
7572 | if (h != NULL) |
7573 | { | |
18f822a0 JW |
7574 | /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. |
7575 | This shows up in particular in an R_AARCH64_PREL64 in large model | |
7576 | when calculating the pc-relative address to .got section which is | |
7577 | used to initialize the gp register. */ | |
7578 | if (h->root.root.string | |
7579 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
7580 | { | |
7581 | if (htab->root.dynobj == NULL) | |
7582 | htab->root.dynobj = abfd; | |
7583 | ||
7584 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
7585 | return FALSE; | |
7586 | ||
7587 | BFD_ASSERT (h == htab->root.hgot); | |
7588 | } | |
7589 | ||
1419bbe5 WN |
7590 | /* Create the ifunc sections for static executables. If we |
7591 | never see an indirect function symbol nor we are building | |
7592 | a static executable, those sections will be empty and | |
7593 | won't appear in output. */ | |
7594 | switch (bfd_r_type) | |
7595 | { | |
7596 | default: | |
7597 | break; | |
7598 | ||
ce336788 JW |
7599 | case BFD_RELOC_AARCH64_ADD_LO12: |
7600 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: | |
7601 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
1419bbe5 | 7602 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 7603 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
1419bbe5 | 7604 | case BFD_RELOC_AARCH64_JUMP26: |
7018c030 | 7605 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
1419bbe5 | 7606 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 7607 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 7608 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
1419bbe5 | 7609 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 7610 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 7611 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
ce336788 | 7612 | case BFD_RELOC_AARCH64_NN: |
1419bbe5 WN |
7613 | if (htab->root.dynobj == NULL) |
7614 | htab->root.dynobj = abfd; | |
7615 | if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info)) | |
7616 | return FALSE; | |
7617 | break; | |
7618 | } | |
7619 | ||
2d0ca824 | 7620 | /* It is referenced by a non-shared object. */ |
1419bbe5 | 7621 | h->ref_regular = 1; |
1419bbe5 WN |
7622 | } |
7623 | ||
a6bb11b2 | 7624 | switch (bfd_r_type) |
a06ea964 | 7625 | { |
79e74192 RL |
7626 | case BFD_RELOC_AARCH64_16: |
7627 | #if ARCH_SIZE == 64 | |
7628 | case BFD_RELOC_AARCH64_32: | |
7629 | #endif | |
279b2f94 | 7630 | if (bfd_link_pic (info) && (sec->flags & SEC_ALLOC) != 0) |
79e74192 | 7631 | { |
279b2f94 RL |
7632 | if (h != NULL |
7633 | /* This is an absolute symbol. It represents a value instead | |
7634 | of an address. */ | |
c691de6a | 7635 | && (bfd_is_abs_symbol (&h->root) |
279b2f94 RL |
7636 | /* This is an undefined symbol. */ |
7637 | || h->root.type == bfd_link_hash_undefined)) | |
7638 | break; | |
7639 | ||
7640 | /* For local symbols, defined global symbols in a non-ABS section, | |
7641 | it is assumed that the value is an address. */ | |
79e74192 RL |
7642 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; |
7643 | _bfd_error_handler | |
7644 | /* xgettext:c-format */ | |
871b3ab2 | 7645 | (_("%pB: relocation %s against `%s' can not be used when making " |
79e74192 RL |
7646 | "a shared object"), |
7647 | abfd, elfNN_aarch64_howto_table[howto_index].name, | |
7648 | (h) ? h->root.root.string : "a local symbol"); | |
7649 | bfd_set_error (bfd_error_bad_value); | |
7650 | return FALSE; | |
7651 | } | |
7652 | else | |
7653 | break; | |
7654 | ||
6353d82b JW |
7655 | case BFD_RELOC_AARCH64_MOVW_G0_NC: |
7656 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
7657 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
7658 | case BFD_RELOC_AARCH64_MOVW_G3: | |
7659 | if (bfd_link_pic (info)) | |
7660 | { | |
7661 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
7662 | _bfd_error_handler | |
7663 | /* xgettext:c-format */ | |
871b3ab2 | 7664 | (_("%pB: relocation %s against `%s' can not be used when making " |
6353d82b JW |
7665 | "a shared object; recompile with -fPIC"), |
7666 | abfd, elfNN_aarch64_howto_table[howto_index].name, | |
7667 | (h) ? h->root.root.string : "a local symbol"); | |
7668 | bfd_set_error (bfd_error_bad_value); | |
7669 | return FALSE; | |
7670 | } | |
7671 | /* Fall through. */ | |
7672 | ||
7673 | case BFD_RELOC_AARCH64_16_PCREL: | |
7674 | case BFD_RELOC_AARCH64_32_PCREL: | |
7675 | case BFD_RELOC_AARCH64_64_PCREL: | |
7676 | case BFD_RELOC_AARCH64_ADD_LO12: | |
7677 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: | |
7678 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
7679 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
7680 | case BFD_RELOC_AARCH64_LDST128_LO12: | |
7681 | case BFD_RELOC_AARCH64_LDST16_LO12: | |
7682 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
7683 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
7684 | case BFD_RELOC_AARCH64_LDST8_LO12: | |
7685 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
7686 | if (h == NULL || bfd_link_pic (info)) | |
7687 | break; | |
7688 | /* Fall through. */ | |
7689 | ||
a6bb11b2 | 7690 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
7691 | |
7692 | /* We don't need to handle relocs into sections not going into | |
7693 | the "real" output. */ | |
7694 | if ((sec->flags & SEC_ALLOC) == 0) | |
7695 | break; | |
7696 | ||
7697 | if (h != NULL) | |
7698 | { | |
0e1862bb | 7699 | if (!bfd_link_pic (info)) |
a06ea964 NC |
7700 | h->non_got_ref = 1; |
7701 | ||
7702 | h->plt.refcount += 1; | |
7703 | h->pointer_equality_needed = 1; | |
7704 | } | |
7705 | ||
7706 | /* No need to do anything if we're not creating a shared | |
7707 | object. */ | |
6353d82b JW |
7708 | if (!(bfd_link_pic (info) |
7709 | /* If on the other hand, we are creating an executable, we | |
7710 | may need to keep relocations for symbols satisfied by a | |
7711 | dynamic library if we manage to avoid copy relocs for the | |
7712 | symbol. | |
7713 | ||
7714 | NOTE: Currently, there is no support of copy relocs | |
7715 | elimination on pc-relative relocation types, because there is | |
7716 | no dynamic relocation support for them in glibc. We still | |
7717 | record the dynamic symbol reference for them. This is | |
7718 | because one symbol may be referenced by both absolute | |
7719 | relocation (for example, BFD_RELOC_AARCH64_NN) and | |
7720 | pc-relative relocation. We need full symbol reference | |
7721 | information to make correct decision later in | |
7722 | elfNN_aarch64_adjust_dynamic_symbol. */ | |
7723 | || (ELIMINATE_COPY_RELOCS | |
7724 | && !bfd_link_pic (info) | |
7725 | && h != NULL | |
7726 | && (h->root.type == bfd_link_hash_defweak | |
7727 | || !h->def_regular)))) | |
a06ea964 NC |
7728 | break; |
7729 | ||
7730 | { | |
7731 | struct elf_dyn_relocs *p; | |
7732 | struct elf_dyn_relocs **head; | |
6353d82b | 7733 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; |
a06ea964 NC |
7734 | |
7735 | /* We must copy these reloc types into the output file. | |
7736 | Create a reloc section in dynobj and make room for | |
7737 | this reloc. */ | |
7738 | if (sreloc == NULL) | |
7739 | { | |
7740 | if (htab->root.dynobj == NULL) | |
7741 | htab->root.dynobj = abfd; | |
7742 | ||
7743 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
0608afa7 | 7744 | (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE); |
a06ea964 NC |
7745 | |
7746 | if (sreloc == NULL) | |
7747 | return FALSE; | |
7748 | } | |
7749 | ||
7750 | /* If this is a global symbol, we count the number of | |
7751 | relocations we need for this symbol. */ | |
7752 | if (h != NULL) | |
7753 | { | |
cec5225b YZ |
7754 | struct elf_aarch64_link_hash_entry *eh; |
7755 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
7756 | head = &eh->dyn_relocs; |
7757 | } | |
7758 | else | |
7759 | { | |
7760 | /* Track dynamic relocs needed for local syms too. | |
7761 | We really need local syms available to do this | |
7762 | easily. Oh well. */ | |
7763 | ||
7764 | asection *s; | |
7765 | void **vpp; | |
a06ea964 NC |
7766 | |
7767 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
7768 | abfd, r_symndx); | |
7769 | if (isym == NULL) | |
7770 | return FALSE; | |
7771 | ||
7772 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
7773 | if (s == NULL) | |
7774 | s = sec; | |
7775 | ||
7776 | /* Beware of type punned pointers vs strict aliasing | |
7777 | rules. */ | |
7778 | vpp = &(elf_section_data (s)->local_dynrel); | |
7779 | head = (struct elf_dyn_relocs **) vpp; | |
7780 | } | |
7781 | ||
7782 | p = *head; | |
7783 | if (p == NULL || p->sec != sec) | |
7784 | { | |
7785 | bfd_size_type amt = sizeof *p; | |
7786 | p = ((struct elf_dyn_relocs *) | |
7787 | bfd_zalloc (htab->root.dynobj, amt)); | |
7788 | if (p == NULL) | |
7789 | return FALSE; | |
7790 | p->next = *head; | |
7791 | *head = p; | |
7792 | p->sec = sec; | |
7793 | } | |
7794 | ||
7795 | p->count += 1; | |
7796 | ||
6353d82b JW |
7797 | if (elfNN_aarch64_howto_table[howto_index].pc_relative) |
7798 | p->pc_count += 1; | |
a06ea964 NC |
7799 | } |
7800 | break; | |
7801 | ||
7802 | /* RR: We probably want to keep a consistency check that | |
7803 | there are no dangling GOT_PAGE relocs. */ | |
a6bb11b2 | 7804 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
7bcccb57 | 7805 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
7018c030 | 7806 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
7bcccb57 | 7807 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 7808 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 7809 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
7bcccb57 | 7810 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 7811 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 7812 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
f955cccf | 7813 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
7bcccb57 | 7814 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 7815 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
7bcccb57 | 7816 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
f955cccf | 7817 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
1ada945d | 7818 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
7819 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
7820 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a6bb11b2 | 7821 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
7bcccb57 | 7822 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 7823 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 7824 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 7825 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
a6bb11b2 | 7826 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 7827 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
7bcccb57 | 7828 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 7829 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
7830 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
7831 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
73f925cc | 7832 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 7833 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 7834 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
7835 | { |
7836 | unsigned got_type; | |
7837 | unsigned old_got_type; | |
7838 | ||
a6bb11b2 | 7839 | got_type = aarch64_reloc_got_type (bfd_r_type); |
a06ea964 NC |
7840 | |
7841 | if (h) | |
7842 | { | |
7843 | h->got.refcount += 1; | |
cec5225b | 7844 | old_got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
7845 | } |
7846 | else | |
7847 | { | |
7848 | struct elf_aarch64_local_symbol *locals; | |
7849 | ||
cec5225b | 7850 | if (!elfNN_aarch64_allocate_local_symbols |
a06ea964 NC |
7851 | (abfd, symtab_hdr->sh_info)) |
7852 | return FALSE; | |
7853 | ||
cec5225b | 7854 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
7855 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
7856 | locals[r_symndx].got_refcount += 1; | |
7857 | old_got_type = locals[r_symndx].got_type; | |
7858 | } | |
7859 | ||
7860 | /* If a variable is accessed with both general dynamic TLS | |
7861 | methods, two slots may be created. */ | |
7862 | if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type)) | |
7863 | got_type |= old_got_type; | |
7864 | ||
7865 | /* We will already have issued an error message if there | |
7866 | is a TLS/non-TLS mismatch, based on the symbol type. | |
7867 | So just combine any TLS types needed. */ | |
7868 | if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL | |
7869 | && got_type != GOT_NORMAL) | |
7870 | got_type |= old_got_type; | |
7871 | ||
7872 | /* If the symbol is accessed by both IE and GD methods, we | |
7873 | are able to relax. Turn off the GD flag, without | |
7874 | messing up with any other kind of TLS types that may be | |
7875 | involved. */ | |
7876 | if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type)) | |
7877 | got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD); | |
7878 | ||
7879 | if (old_got_type != got_type) | |
7880 | { | |
7881 | if (h != NULL) | |
cec5225b | 7882 | elf_aarch64_hash_entry (h)->got_type = got_type; |
a06ea964 NC |
7883 | else |
7884 | { | |
7885 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 7886 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
7887 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
7888 | locals[r_symndx].got_type = got_type; | |
7889 | } | |
7890 | } | |
7891 | ||
cc0efaa8 MS |
7892 | if (htab->root.dynobj == NULL) |
7893 | htab->root.dynobj = abfd; | |
7894 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
7895 | return FALSE; | |
a06ea964 NC |
7896 | break; |
7897 | } | |
7898 | ||
a6bb11b2 YZ |
7899 | case BFD_RELOC_AARCH64_CALL26: |
7900 | case BFD_RELOC_AARCH64_JUMP26: | |
a06ea964 NC |
7901 | /* If this is a local symbol then we resolve it |
7902 | directly without creating a PLT entry. */ | |
7903 | if (h == NULL) | |
7904 | continue; | |
7905 | ||
7906 | h->needs_plt = 1; | |
1419bbe5 WN |
7907 | if (h->plt.refcount <= 0) |
7908 | h->plt.refcount = 1; | |
7909 | else | |
7910 | h->plt.refcount += 1; | |
a06ea964 | 7911 | break; |
a6bb11b2 YZ |
7912 | |
7913 | default: | |
7914 | break; | |
a06ea964 NC |
7915 | } |
7916 | } | |
a6bb11b2 | 7917 | |
a06ea964 NC |
7918 | return TRUE; |
7919 | } | |
7920 | ||
7921 | /* Treat mapping symbols as special target symbols. */ | |
7922 | ||
7923 | static bfd_boolean | |
cec5225b | 7924 | elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
7925 | asymbol *sym) |
7926 | { | |
7927 | return bfd_is_aarch64_special_symbol_name (sym->name, | |
7928 | BFD_AARCH64_SPECIAL_SYM_TYPE_ANY); | |
7929 | } | |
7930 | ||
7931 | /* This is a copy of elf_find_function () from elf.c except that | |
7932 | AArch64 mapping symbols are ignored when looking for function names. */ | |
7933 | ||
7934 | static bfd_boolean | |
7935 | aarch64_elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, | |
a06ea964 | 7936 | asymbol **symbols, |
fb167eb2 | 7937 | asection *section, |
a06ea964 NC |
7938 | bfd_vma offset, |
7939 | const char **filename_ptr, | |
7940 | const char **functionname_ptr) | |
7941 | { | |
7942 | const char *filename = NULL; | |
7943 | asymbol *func = NULL; | |
7944 | bfd_vma low_func = 0; | |
7945 | asymbol **p; | |
7946 | ||
7947 | for (p = symbols; *p != NULL; p++) | |
7948 | { | |
7949 | elf_symbol_type *q; | |
7950 | ||
7951 | q = (elf_symbol_type *) * p; | |
7952 | ||
7953 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) | |
7954 | { | |
7955 | default: | |
7956 | break; | |
7957 | case STT_FILE: | |
7958 | filename = bfd_asymbol_name (&q->symbol); | |
7959 | break; | |
7960 | case STT_FUNC: | |
7961 | case STT_NOTYPE: | |
7962 | /* Skip mapping symbols. */ | |
7963 | if ((q->symbol.flags & BSF_LOCAL) | |
7964 | && (bfd_is_aarch64_special_symbol_name | |
7965 | (q->symbol.name, BFD_AARCH64_SPECIAL_SYM_TYPE_ANY))) | |
7966 | continue; | |
7967 | /* Fall through. */ | |
7968 | if (bfd_get_section (&q->symbol) == section | |
7969 | && q->symbol.value >= low_func && q->symbol.value <= offset) | |
7970 | { | |
7971 | func = (asymbol *) q; | |
7972 | low_func = q->symbol.value; | |
7973 | } | |
7974 | break; | |
7975 | } | |
7976 | } | |
7977 | ||
7978 | if (func == NULL) | |
7979 | return FALSE; | |
7980 | ||
7981 | if (filename_ptr) | |
7982 | *filename_ptr = filename; | |
7983 | if (functionname_ptr) | |
7984 | *functionname_ptr = bfd_asymbol_name (func); | |
7985 | ||
7986 | return TRUE; | |
7987 | } | |
7988 | ||
7989 | ||
7990 | /* Find the nearest line to a particular section and offset, for error | |
7991 | reporting. This code is a duplicate of the code in elf.c, except | |
7992 | that it uses aarch64_elf_find_function. */ | |
7993 | ||
7994 | static bfd_boolean | |
cec5225b | 7995 | elfNN_aarch64_find_nearest_line (bfd *abfd, |
a06ea964 | 7996 | asymbol **symbols, |
fb167eb2 | 7997 | asection *section, |
a06ea964 NC |
7998 | bfd_vma offset, |
7999 | const char **filename_ptr, | |
8000 | const char **functionname_ptr, | |
fb167eb2 AM |
8001 | unsigned int *line_ptr, |
8002 | unsigned int *discriminator_ptr) | |
a06ea964 NC |
8003 | { |
8004 | bfd_boolean found = FALSE; | |
8005 | ||
fb167eb2 | 8006 | if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset, |
a06ea964 | 8007 | filename_ptr, functionname_ptr, |
fb167eb2 AM |
8008 | line_ptr, discriminator_ptr, |
8009 | dwarf_debug_sections, 0, | |
a06ea964 NC |
8010 | &elf_tdata (abfd)->dwarf2_find_line_info)) |
8011 | { | |
8012 | if (!*functionname_ptr) | |
fb167eb2 | 8013 | aarch64_elf_find_function (abfd, symbols, section, offset, |
a06ea964 NC |
8014 | *filename_ptr ? NULL : filename_ptr, |
8015 | functionname_ptr); | |
8016 | ||
8017 | return TRUE; | |
8018 | } | |
8019 | ||
fb167eb2 AM |
8020 | /* Skip _bfd_dwarf1_find_nearest_line since no known AArch64 |
8021 | toolchain uses DWARF1. */ | |
8022 | ||
a06ea964 NC |
8023 | if (!_bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, |
8024 | &found, filename_ptr, | |
8025 | functionname_ptr, line_ptr, | |
8026 | &elf_tdata (abfd)->line_info)) | |
8027 | return FALSE; | |
8028 | ||
8029 | if (found && (*functionname_ptr || *line_ptr)) | |
8030 | return TRUE; | |
8031 | ||
8032 | if (symbols == NULL) | |
8033 | return FALSE; | |
8034 | ||
fb167eb2 | 8035 | if (!aarch64_elf_find_function (abfd, symbols, section, offset, |
a06ea964 NC |
8036 | filename_ptr, functionname_ptr)) |
8037 | return FALSE; | |
8038 | ||
8039 | *line_ptr = 0; | |
8040 | return TRUE; | |
8041 | } | |
8042 | ||
8043 | static bfd_boolean | |
cec5225b | 8044 | elfNN_aarch64_find_inliner_info (bfd *abfd, |
a06ea964 NC |
8045 | const char **filename_ptr, |
8046 | const char **functionname_ptr, | |
8047 | unsigned int *line_ptr) | |
8048 | { | |
8049 | bfd_boolean found; | |
8050 | found = _bfd_dwarf2_find_inliner_info | |
8051 | (abfd, filename_ptr, | |
8052 | functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info); | |
8053 | return found; | |
8054 | } | |
8055 | ||
8056 | ||
8057 | static void | |
cec5225b | 8058 | elfNN_aarch64_post_process_headers (bfd *abfd, |
1419bbe5 | 8059 | struct bfd_link_info *link_info) |
a06ea964 NC |
8060 | { |
8061 | Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */ | |
8062 | ||
8063 | i_ehdrp = elf_elfheader (abfd); | |
a06ea964 | 8064 | i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION; |
1419bbe5 | 8065 | |
78245035 | 8066 | _bfd_elf_post_process_headers (abfd, link_info); |
a06ea964 NC |
8067 | } |
8068 | ||
8069 | static enum elf_reloc_type_class | |
cec5225b | 8070 | elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
7e612e98 AM |
8071 | const asection *rel_sec ATTRIBUTE_UNUSED, |
8072 | const Elf_Internal_Rela *rela) | |
a06ea964 | 8073 | { |
f2e6a843 SN |
8074 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); |
8075 | ||
8076 | if (htab->root.dynsym != NULL | |
8077 | && htab->root.dynsym->contents != NULL) | |
8078 | { | |
8079 | /* Check relocation against STT_GNU_IFUNC symbol if there are | |
8080 | dynamic symbols. */ | |
8081 | bfd *abfd = info->output_bfd; | |
8082 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8083 | unsigned long r_symndx = ELFNN_R_SYM (rela->r_info); | |
8084 | if (r_symndx != STN_UNDEF) | |
8085 | { | |
8086 | Elf_Internal_Sym sym; | |
8087 | if (!bed->s->swap_symbol_in (abfd, | |
8088 | (htab->root.dynsym->contents | |
8089 | + r_symndx * bed->s->sizeof_sym), | |
8090 | 0, &sym)) | |
8091 | { | |
8092 | /* xgettext:c-format */ | |
871b3ab2 | 8093 | _bfd_error_handler (_("%pB symbol number %lu references" |
f2e6a843 SN |
8094 | " nonexistent SHT_SYMTAB_SHNDX section"), |
8095 | abfd, r_symndx); | |
8096 | /* Ideally an error class should be returned here. */ | |
8097 | } | |
8098 | else if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC) | |
8099 | return reloc_class_ifunc; | |
8100 | } | |
8101 | } | |
8102 | ||
cec5225b | 8103 | switch ((int) ELFNN_R_TYPE (rela->r_info)) |
a06ea964 | 8104 | { |
f2e6a843 SN |
8105 | case AARCH64_R (IRELATIVE): |
8106 | return reloc_class_ifunc; | |
a6bb11b2 | 8107 | case AARCH64_R (RELATIVE): |
a06ea964 | 8108 | return reloc_class_relative; |
a6bb11b2 | 8109 | case AARCH64_R (JUMP_SLOT): |
a06ea964 | 8110 | return reloc_class_plt; |
a6bb11b2 | 8111 | case AARCH64_R (COPY): |
a06ea964 NC |
8112 | return reloc_class_copy; |
8113 | default: | |
8114 | return reloc_class_normal; | |
8115 | } | |
8116 | } | |
8117 | ||
a06ea964 NC |
8118 | /* Handle an AArch64 specific section when reading an object file. This is |
8119 | called when bfd_section_from_shdr finds a section with an unknown | |
8120 | type. */ | |
8121 | ||
8122 | static bfd_boolean | |
cec5225b | 8123 | elfNN_aarch64_section_from_shdr (bfd *abfd, |
a06ea964 NC |
8124 | Elf_Internal_Shdr *hdr, |
8125 | const char *name, int shindex) | |
8126 | { | |
8127 | /* There ought to be a place to keep ELF backend specific flags, but | |
8128 | at the moment there isn't one. We just keep track of the | |
8129 | sections by their name, instead. Fortunately, the ABI gives | |
8130 | names for all the AArch64 specific sections, so we will probably get | |
8131 | away with this. */ | |
8132 | switch (hdr->sh_type) | |
8133 | { | |
8134 | case SHT_AARCH64_ATTRIBUTES: | |
8135 | break; | |
8136 | ||
8137 | default: | |
8138 | return FALSE; | |
8139 | } | |
8140 | ||
8141 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
8142 | return FALSE; | |
8143 | ||
8144 | return TRUE; | |
8145 | } | |
8146 | ||
8147 | /* A structure used to record a list of sections, independently | |
8148 | of the next and prev fields in the asection structure. */ | |
8149 | typedef struct section_list | |
8150 | { | |
8151 | asection *sec; | |
8152 | struct section_list *next; | |
8153 | struct section_list *prev; | |
8154 | } | |
8155 | section_list; | |
8156 | ||
8157 | /* Unfortunately we need to keep a list of sections for which | |
8158 | an _aarch64_elf_section_data structure has been allocated. This | |
cec5225b | 8159 | is because it is possible for functions like elfNN_aarch64_write_section |
a06ea964 NC |
8160 | to be called on a section which has had an elf_data_structure |
8161 | allocated for it (and so the used_by_bfd field is valid) but | |
8162 | for which the AArch64 extended version of this structure - the | |
8163 | _aarch64_elf_section_data structure - has not been allocated. */ | |
8164 | static section_list *sections_with_aarch64_elf_section_data = NULL; | |
8165 | ||
8166 | static void | |
8167 | record_section_with_aarch64_elf_section_data (asection *sec) | |
8168 | { | |
8169 | struct section_list *entry; | |
8170 | ||
8171 | entry = bfd_malloc (sizeof (*entry)); | |
8172 | if (entry == NULL) | |
8173 | return; | |
8174 | entry->sec = sec; | |
8175 | entry->next = sections_with_aarch64_elf_section_data; | |
8176 | entry->prev = NULL; | |
8177 | if (entry->next != NULL) | |
8178 | entry->next->prev = entry; | |
8179 | sections_with_aarch64_elf_section_data = entry; | |
8180 | } | |
8181 | ||
8182 | static struct section_list * | |
8183 | find_aarch64_elf_section_entry (asection *sec) | |
8184 | { | |
8185 | struct section_list *entry; | |
8186 | static struct section_list *last_entry = NULL; | |
8187 | ||
8188 | /* This is a short cut for the typical case where the sections are added | |
8189 | to the sections_with_aarch64_elf_section_data list in forward order and | |
8190 | then looked up here in backwards order. This makes a real difference | |
8191 | to the ld-srec/sec64k.exp linker test. */ | |
8192 | entry = sections_with_aarch64_elf_section_data; | |
8193 | if (last_entry != NULL) | |
8194 | { | |
8195 | if (last_entry->sec == sec) | |
8196 | entry = last_entry; | |
8197 | else if (last_entry->next != NULL && last_entry->next->sec == sec) | |
8198 | entry = last_entry->next; | |
8199 | } | |
8200 | ||
8201 | for (; entry; entry = entry->next) | |
8202 | if (entry->sec == sec) | |
8203 | break; | |
8204 | ||
8205 | if (entry) | |
8206 | /* Record the entry prior to this one - it is the entry we are | |
8207 | most likely to want to locate next time. Also this way if we | |
8208 | have been called from | |
8209 | unrecord_section_with_aarch64_elf_section_data () we will not | |
8210 | be caching a pointer that is about to be freed. */ | |
8211 | last_entry = entry->prev; | |
8212 | ||
8213 | return entry; | |
8214 | } | |
8215 | ||
8216 | static void | |
8217 | unrecord_section_with_aarch64_elf_section_data (asection *sec) | |
8218 | { | |
8219 | struct section_list *entry; | |
8220 | ||
8221 | entry = find_aarch64_elf_section_entry (sec); | |
8222 | ||
8223 | if (entry) | |
8224 | { | |
8225 | if (entry->prev != NULL) | |
8226 | entry->prev->next = entry->next; | |
8227 | if (entry->next != NULL) | |
8228 | entry->next->prev = entry->prev; | |
8229 | if (entry == sections_with_aarch64_elf_section_data) | |
8230 | sections_with_aarch64_elf_section_data = entry->next; | |
8231 | free (entry); | |
8232 | } | |
8233 | } | |
8234 | ||
8235 | ||
8236 | typedef struct | |
8237 | { | |
8238 | void *finfo; | |
8239 | struct bfd_link_info *info; | |
8240 | asection *sec; | |
8241 | int sec_shndx; | |
8242 | int (*func) (void *, const char *, Elf_Internal_Sym *, | |
8243 | asection *, struct elf_link_hash_entry *); | |
8244 | } output_arch_syminfo; | |
8245 | ||
8246 | enum map_symbol_type | |
8247 | { | |
8248 | AARCH64_MAP_INSN, | |
8249 | AARCH64_MAP_DATA | |
8250 | }; | |
8251 | ||
8252 | ||
8253 | /* Output a single mapping symbol. */ | |
8254 | ||
8255 | static bfd_boolean | |
cec5225b | 8256 | elfNN_aarch64_output_map_sym (output_arch_syminfo *osi, |
a06ea964 NC |
8257 | enum map_symbol_type type, bfd_vma offset) |
8258 | { | |
8259 | static const char *names[2] = { "$x", "$d" }; | |
8260 | Elf_Internal_Sym sym; | |
8261 | ||
8262 | sym.st_value = (osi->sec->output_section->vma | |
8263 | + osi->sec->output_offset + offset); | |
8264 | sym.st_size = 0; | |
8265 | sym.st_other = 0; | |
8266 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
8267 | sym.st_shndx = osi->sec_shndx; | |
8268 | return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1; | |
8269 | } | |
8270 | ||
a06ea964 NC |
8271 | /* Output a single local symbol for a generated stub. */ |
8272 | ||
8273 | static bfd_boolean | |
cec5225b | 8274 | elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name, |
a06ea964 NC |
8275 | bfd_vma offset, bfd_vma size) |
8276 | { | |
8277 | Elf_Internal_Sym sym; | |
8278 | ||
8279 | sym.st_value = (osi->sec->output_section->vma | |
8280 | + osi->sec->output_offset + offset); | |
8281 | sym.st_size = size; | |
8282 | sym.st_other = 0; | |
8283 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
8284 | sym.st_shndx = osi->sec_shndx; | |
8285 | return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1; | |
8286 | } | |
8287 | ||
8288 | static bfd_boolean | |
8289 | aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) | |
8290 | { | |
cec5225b | 8291 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
8292 | asection *stub_sec; |
8293 | bfd_vma addr; | |
8294 | char *stub_name; | |
8295 | output_arch_syminfo *osi; | |
8296 | ||
8297 | /* Massage our args to the form they really have. */ | |
cec5225b | 8298 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
8299 | osi = (output_arch_syminfo *) in_arg; |
8300 | ||
8301 | stub_sec = stub_entry->stub_sec; | |
8302 | ||
8303 | /* Ensure this stub is attached to the current section being | |
8304 | processed. */ | |
8305 | if (stub_sec != osi->sec) | |
8306 | return TRUE; | |
8307 | ||
8308 | addr = (bfd_vma) stub_entry->stub_offset; | |
8309 | ||
8310 | stub_name = stub_entry->output_name; | |
8311 | ||
8312 | switch (stub_entry->stub_type) | |
8313 | { | |
8314 | case aarch64_stub_adrp_branch: | |
cec5225b | 8315 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, |
a06ea964 NC |
8316 | sizeof (aarch64_adrp_branch_stub))) |
8317 | return FALSE; | |
cec5225b | 8318 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 NC |
8319 | return FALSE; |
8320 | break; | |
8321 | case aarch64_stub_long_branch: | |
cec5225b | 8322 | if (!elfNN_aarch64_output_stub_sym |
a06ea964 NC |
8323 | (osi, stub_name, addr, sizeof (aarch64_long_branch_stub))) |
8324 | return FALSE; | |
cec5225b | 8325 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 | 8326 | return FALSE; |
cec5225b | 8327 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16)) |
a06ea964 NC |
8328 | return FALSE; |
8329 | break; | |
68fcca92 JW |
8330 | case aarch64_stub_erratum_835769_veneer: |
8331 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
8332 | sizeof (aarch64_erratum_835769_stub))) | |
8333 | return FALSE; | |
8334 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
8335 | return FALSE; | |
8336 | break; | |
4106101c MS |
8337 | case aarch64_stub_erratum_843419_veneer: |
8338 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
8339 | sizeof (aarch64_erratum_843419_stub))) | |
8340 | return FALSE; | |
8341 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
8342 | return FALSE; | |
8343 | break; | |
9fca35fc TC |
8344 | case aarch64_stub_none: |
8345 | break; | |
4106101c | 8346 | |
a06ea964 | 8347 | default: |
8e2fe09f | 8348 | abort (); |
a06ea964 NC |
8349 | } |
8350 | ||
8351 | return TRUE; | |
8352 | } | |
8353 | ||
8354 | /* Output mapping symbols for linker generated sections. */ | |
8355 | ||
8356 | static bfd_boolean | |
cec5225b | 8357 | elfNN_aarch64_output_arch_local_syms (bfd *output_bfd, |
a06ea964 NC |
8358 | struct bfd_link_info *info, |
8359 | void *finfo, | |
8360 | int (*func) (void *, const char *, | |
8361 | Elf_Internal_Sym *, | |
8362 | asection *, | |
8363 | struct elf_link_hash_entry | |
8364 | *)) | |
8365 | { | |
8366 | output_arch_syminfo osi; | |
cec5225b | 8367 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 8368 | |
cec5225b | 8369 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
8370 | |
8371 | osi.finfo = finfo; | |
8372 | osi.info = info; | |
8373 | osi.func = func; | |
8374 | ||
8375 | /* Long calls stubs. */ | |
8376 | if (htab->stub_bfd && htab->stub_bfd->sections) | |
8377 | { | |
8378 | asection *stub_sec; | |
8379 | ||
8380 | for (stub_sec = htab->stub_bfd->sections; | |
8381 | stub_sec != NULL; stub_sec = stub_sec->next) | |
8382 | { | |
8383 | /* Ignore non-stub sections. */ | |
8384 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
8385 | continue; | |
8386 | ||
8387 | osi.sec = stub_sec; | |
8388 | ||
8389 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
8390 | (output_bfd, osi.sec->output_section); | |
8391 | ||
61865519 MS |
8392 | /* The first instruction in a stub is always a branch. */ |
8393 | if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0)) | |
8394 | return FALSE; | |
8395 | ||
a06ea964 NC |
8396 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub, |
8397 | &osi); | |
8398 | } | |
8399 | } | |
8400 | ||
8401 | /* Finally, output mapping symbols for the PLT. */ | |
8402 | if (!htab->root.splt || htab->root.splt->size == 0) | |
8403 | return TRUE; | |
8404 | ||
a06ea964 NC |
8405 | osi.sec_shndx = _bfd_elf_section_from_bfd_section |
8406 | (output_bfd, htab->root.splt->output_section); | |
8407 | osi.sec = htab->root.splt; | |
8408 | ||
73524045 | 8409 | elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0); |
a06ea964 NC |
8410 | |
8411 | return TRUE; | |
8412 | ||
8413 | } | |
8414 | ||
8415 | /* Allocate target specific section data. */ | |
8416 | ||
8417 | static bfd_boolean | |
cec5225b | 8418 | elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec) |
a06ea964 NC |
8419 | { |
8420 | if (!sec->used_by_bfd) | |
8421 | { | |
8422 | _aarch64_elf_section_data *sdata; | |
8423 | bfd_size_type amt = sizeof (*sdata); | |
8424 | ||
8425 | sdata = bfd_zalloc (abfd, amt); | |
8426 | if (sdata == NULL) | |
8427 | return FALSE; | |
8428 | sec->used_by_bfd = sdata; | |
8429 | } | |
8430 | ||
8431 | record_section_with_aarch64_elf_section_data (sec); | |
8432 | ||
8433 | return _bfd_elf_new_section_hook (abfd, sec); | |
8434 | } | |
8435 | ||
8436 | ||
8437 | static void | |
8438 | unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
8439 | asection *sec, | |
8440 | void *ignore ATTRIBUTE_UNUSED) | |
8441 | { | |
8442 | unrecord_section_with_aarch64_elf_section_data (sec); | |
8443 | } | |
8444 | ||
8445 | static bfd_boolean | |
cec5225b | 8446 | elfNN_aarch64_close_and_cleanup (bfd *abfd) |
a06ea964 NC |
8447 | { |
8448 | if (abfd->sections) | |
8449 | bfd_map_over_sections (abfd, | |
8450 | unrecord_section_via_map_over_sections, NULL); | |
8451 | ||
8452 | return _bfd_elf_close_and_cleanup (abfd); | |
8453 | } | |
8454 | ||
8455 | static bfd_boolean | |
cec5225b | 8456 | elfNN_aarch64_bfd_free_cached_info (bfd *abfd) |
a06ea964 NC |
8457 | { |
8458 | if (abfd->sections) | |
8459 | bfd_map_over_sections (abfd, | |
8460 | unrecord_section_via_map_over_sections, NULL); | |
8461 | ||
8462 | return _bfd_free_cached_info (abfd); | |
8463 | } | |
8464 | ||
a06ea964 NC |
8465 | /* Create dynamic sections. This is different from the ARM backend in that |
8466 | the got, plt, gotplt and their relocation sections are all created in the | |
8467 | standard part of the bfd elf backend. */ | |
8468 | ||
8469 | static bfd_boolean | |
cec5225b | 8470 | elfNN_aarch64_create_dynamic_sections (bfd *dynobj, |
a06ea964 NC |
8471 | struct bfd_link_info *info) |
8472 | { | |
cc0efaa8 MS |
8473 | /* We need to create .got section. */ |
8474 | if (!aarch64_elf_create_got_section (dynobj, info)) | |
8475 | return FALSE; | |
a06ea964 | 8476 | |
9d19e4fd | 8477 | return _bfd_elf_create_dynamic_sections (dynobj, info); |
a06ea964 NC |
8478 | } |
8479 | ||
8480 | ||
8481 | /* Allocate space in .plt, .got and associated reloc sections for | |
8482 | dynamic relocs. */ | |
8483 | ||
8484 | static bfd_boolean | |
cec5225b | 8485 | elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
a06ea964 NC |
8486 | { |
8487 | struct bfd_link_info *info; | |
cec5225b YZ |
8488 | struct elf_aarch64_link_hash_table *htab; |
8489 | struct elf_aarch64_link_hash_entry *eh; | |
a06ea964 NC |
8490 | struct elf_dyn_relocs *p; |
8491 | ||
8492 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
8493 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
8494 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
8495 | ||
8496 | There is no need to process bfd_link_hash_indirect symbols here | |
8497 | because we will also be presented with the concrete instance of | |
cec5225b | 8498 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been |
a06ea964 | 8499 | called to copy all relevant data from the generic to the concrete |
2d0ca824 | 8500 | symbol instance. */ |
a06ea964 NC |
8501 | if (h->root.type == bfd_link_hash_indirect) |
8502 | return TRUE; | |
8503 | ||
8504 | if (h->root.type == bfd_link_hash_warning) | |
8505 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8506 | ||
8507 | info = (struct bfd_link_info *) inf; | |
cec5225b | 8508 | htab = elf_aarch64_hash_table (info); |
a06ea964 | 8509 | |
1419bbe5 WN |
8510 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
8511 | here if it is defined and referenced in a non-shared object. */ | |
8512 | if (h->type == STT_GNU_IFUNC | |
8513 | && h->def_regular) | |
8514 | return TRUE; | |
8515 | else if (htab->root.dynamic_sections_created && h->plt.refcount > 0) | |
a06ea964 NC |
8516 | { |
8517 | /* Make sure this symbol is output as a dynamic symbol. | |
07d6d2b8 | 8518 | Undefined weak syms won't yet be marked as dynamic. */ |
ff07562f JW |
8519 | if (h->dynindx == -1 && !h->forced_local |
8520 | && h->root.type == bfd_link_hash_undefweak) | |
a06ea964 NC |
8521 | { |
8522 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
8523 | return FALSE; | |
8524 | } | |
8525 | ||
0e1862bb | 8526 | if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
a06ea964 NC |
8527 | { |
8528 | asection *s = htab->root.splt; | |
8529 | ||
8530 | /* If this is the first .plt entry, make room for the special | |
8531 | first entry. */ | |
8532 | if (s->size == 0) | |
8533 | s->size += htab->plt_header_size; | |
8534 | ||
8535 | h->plt.offset = s->size; | |
8536 | ||
8537 | /* If this symbol is not defined in a regular file, and we are | |
8538 | not generating a shared library, then set the symbol to this | |
8539 | location in the .plt. This is required to make function | |
8540 | pointers compare as equal between the normal executable and | |
8541 | the shared library. */ | |
0e1862bb | 8542 | if (!bfd_link_pic (info) && !h->def_regular) |
a06ea964 NC |
8543 | { |
8544 | h->root.u.def.section = s; | |
8545 | h->root.u.def.value = h->plt.offset; | |
8546 | } | |
8547 | ||
8548 | /* Make room for this entry. For now we only create the | |
8549 | small model PLT entries. We later need to find a way | |
8550 | of relaxing into these from the large model PLT entries. */ | |
37c18eed | 8551 | s->size += htab->plt_entry_size; |
a06ea964 NC |
8552 | |
8553 | /* We also need to make an entry in the .got.plt section, which | |
8554 | will be placed in the .got section by the linker script. */ | |
8555 | htab->root.sgotplt->size += GOT_ENTRY_SIZE; | |
8556 | ||
8557 | /* We also need to make an entry in the .rela.plt section. */ | |
8558 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8559 | ||
8560 | /* We need to ensure that all GOT entries that serve the PLT | |
8561 | are consecutive with the special GOT slots [0] [1] and | |
8562 | [2]. Any addtional relocations, such as | |
8563 | R_AARCH64_TLSDESC, must be placed after the PLT related | |
8564 | entries. We abuse the reloc_count such that during | |
8565 | sizing we adjust reloc_count to indicate the number of | |
8566 | PLT related reserved entries. In subsequent phases when | |
8567 | filling in the contents of the reloc entries, PLT related | |
8568 | entries are placed by computing their PLT index (0 | |
8569 | .. reloc_count). While other none PLT relocs are placed | |
8570 | at the slot indicated by reloc_count and reloc_count is | |
8571 | updated. */ | |
8572 | ||
8573 | htab->root.srelplt->reloc_count++; | |
8574 | } | |
8575 | else | |
8576 | { | |
8577 | h->plt.offset = (bfd_vma) - 1; | |
8578 | h->needs_plt = 0; | |
8579 | } | |
8580 | } | |
8581 | else | |
8582 | { | |
8583 | h->plt.offset = (bfd_vma) - 1; | |
8584 | h->needs_plt = 0; | |
8585 | } | |
8586 | ||
cec5225b | 8587 | eh = (struct elf_aarch64_link_hash_entry *) h; |
a06ea964 NC |
8588 | eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; |
8589 | ||
8590 | if (h->got.refcount > 0) | |
8591 | { | |
8592 | bfd_boolean dyn; | |
cec5225b | 8593 | unsigned got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
8594 | |
8595 | h->got.offset = (bfd_vma) - 1; | |
8596 | ||
8597 | dyn = htab->root.dynamic_sections_created; | |
8598 | ||
8599 | /* Make sure this symbol is output as a dynamic symbol. | |
07d6d2b8 | 8600 | Undefined weak syms won't yet be marked as dynamic. */ |
ff07562f JW |
8601 | if (dyn && h->dynindx == -1 && !h->forced_local |
8602 | && h->root.type == bfd_link_hash_undefweak) | |
a06ea964 NC |
8603 | { |
8604 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
8605 | return FALSE; | |
8606 | } | |
8607 | ||
8608 | if (got_type == GOT_UNKNOWN) | |
8609 | { | |
8610 | } | |
8611 | else if (got_type == GOT_NORMAL) | |
8612 | { | |
8613 | h->got.offset = htab->root.sgot->size; | |
8614 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8615 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8616 | || h->root.type != bfd_link_hash_undefweak) | |
0e1862bb | 8617 | && (bfd_link_pic (info) |
a377ae2a SN |
8618 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) |
8619 | /* Undefined weak symbol in static PIE resolves to 0 without | |
8620 | any dynamic relocations. */ | |
8621 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
a06ea964 NC |
8622 | { |
8623 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
8624 | } | |
8625 | } | |
8626 | else | |
8627 | { | |
8628 | int indx; | |
8629 | if (got_type & GOT_TLSDESC_GD) | |
8630 | { | |
8631 | eh->tlsdesc_got_jump_table_offset = | |
8632 | (htab->root.sgotplt->size | |
8633 | - aarch64_compute_jump_table_size (htab)); | |
8634 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
8635 | h->got.offset = (bfd_vma) - 2; | |
8636 | } | |
8637 | ||
8638 | if (got_type & GOT_TLS_GD) | |
8639 | { | |
8640 | h->got.offset = htab->root.sgot->size; | |
8641 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
8642 | } | |
8643 | ||
8644 | if (got_type & GOT_TLS_IE) | |
8645 | { | |
8646 | h->got.offset = htab->root.sgot->size; | |
8647 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8648 | } | |
8649 | ||
8650 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
8651 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8652 | || h->root.type != bfd_link_hash_undefweak) | |
6dda7875 | 8653 | && (!bfd_link_executable (info) |
a06ea964 NC |
8654 | || indx != 0 |
8655 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
8656 | { | |
8657 | if (got_type & GOT_TLSDESC_GD) | |
8658 | { | |
8659 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8660 | /* Note reloc_count not incremented here! We have | |
8661 | already adjusted reloc_count for this relocation | |
8662 | type. */ | |
8663 | ||
8664 | /* TLSDESC PLT is now needed, but not yet determined. */ | |
8665 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
8666 | } | |
8667 | ||
8668 | if (got_type & GOT_TLS_GD) | |
8669 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
8670 | ||
8671 | if (got_type & GOT_TLS_IE) | |
8672 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
8673 | } | |
8674 | } | |
8675 | } | |
8676 | else | |
8677 | { | |
8678 | h->got.offset = (bfd_vma) - 1; | |
8679 | } | |
8680 | ||
8681 | if (eh->dyn_relocs == NULL) | |
8682 | return TRUE; | |
8683 | ||
8684 | /* In the shared -Bsymbolic case, discard space allocated for | |
8685 | dynamic pc-relative relocs against symbols which turn out to be | |
8686 | defined in regular objects. For the normal shared case, discard | |
8687 | space for pc-relative relocs that have become local due to symbol | |
8688 | visibility changes. */ | |
8689 | ||
0e1862bb | 8690 | if (bfd_link_pic (info)) |
a06ea964 NC |
8691 | { |
8692 | /* Relocs that use pc_count are those that appear on a call | |
07d6d2b8 AM |
8693 | insn, or certain REL relocs that can generated via assembly. |
8694 | We want calls to protected symbols to resolve directly to the | |
8695 | function rather than going via the plt. If people want | |
8696 | function pointer comparisons to work as expected then they | |
8697 | should avoid writing weird assembly. */ | |
a06ea964 NC |
8698 | if (SYMBOL_CALLS_LOCAL (info, h)) |
8699 | { | |
8700 | struct elf_dyn_relocs **pp; | |
8701 | ||
8702 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) | |
8703 | { | |
8704 | p->count -= p->pc_count; | |
8705 | p->pc_count = 0; | |
8706 | if (p->count == 0) | |
8707 | *pp = p->next; | |
8708 | else | |
8709 | pp = &p->next; | |
8710 | } | |
8711 | } | |
8712 | ||
8713 | /* Also discard relocs on undefined weak syms with non-default | |
07d6d2b8 | 8714 | visibility. */ |
a06ea964 NC |
8715 | if (eh->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak) |
8716 | { | |
ddb7fd0f L |
8717 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
8718 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
a06ea964 NC |
8719 | eh->dyn_relocs = NULL; |
8720 | ||
8721 | /* Make sure undefined weak symbols are output as a dynamic | |
8722 | symbol in PIEs. */ | |
8723 | else if (h->dynindx == -1 | |
8724 | && !h->forced_local | |
ff07562f | 8725 | && h->root.type == bfd_link_hash_undefweak |
a06ea964 NC |
8726 | && !bfd_elf_link_record_dynamic_symbol (info, h)) |
8727 | return FALSE; | |
8728 | } | |
8729 | ||
8730 | } | |
8731 | else if (ELIMINATE_COPY_RELOCS) | |
8732 | { | |
8733 | /* For the non-shared case, discard space for relocs against | |
07d6d2b8 AM |
8734 | symbols which turn out to need copy relocs or are not |
8735 | dynamic. */ | |
a06ea964 NC |
8736 | |
8737 | if (!h->non_got_ref | |
8738 | && ((h->def_dynamic | |
8739 | && !h->def_regular) | |
8740 | || (htab->root.dynamic_sections_created | |
8741 | && (h->root.type == bfd_link_hash_undefweak | |
8742 | || h->root.type == bfd_link_hash_undefined)))) | |
8743 | { | |
8744 | /* Make sure this symbol is output as a dynamic symbol. | |
8745 | Undefined weak syms won't yet be marked as dynamic. */ | |
8746 | if (h->dynindx == -1 | |
8747 | && !h->forced_local | |
ff07562f | 8748 | && h->root.type == bfd_link_hash_undefweak |
a06ea964 NC |
8749 | && !bfd_elf_link_record_dynamic_symbol (info, h)) |
8750 | return FALSE; | |
8751 | ||
8752 | /* If that succeeded, we know we'll be keeping all the | |
8753 | relocs. */ | |
8754 | if (h->dynindx != -1) | |
8755 | goto keep; | |
8756 | } | |
8757 | ||
8758 | eh->dyn_relocs = NULL; | |
8759 | ||
8760 | keep:; | |
8761 | } | |
8762 | ||
8763 | /* Finally, allocate space. */ | |
8764 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
8765 | { | |
8766 | asection *sreloc; | |
8767 | ||
8768 | sreloc = elf_section_data (p->sec)->sreloc; | |
8769 | ||
8770 | BFD_ASSERT (sreloc != NULL); | |
8771 | ||
8772 | sreloc->size += p->count * RELOC_SIZE (htab); | |
8773 | } | |
8774 | ||
8775 | return TRUE; | |
8776 | } | |
8777 | ||
1419bbe5 WN |
8778 | /* Allocate space in .plt, .got and associated reloc sections for |
8779 | ifunc dynamic relocs. */ | |
8780 | ||
8781 | static bfd_boolean | |
8782 | elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h, | |
8783 | void *inf) | |
8784 | { | |
8785 | struct bfd_link_info *info; | |
8786 | struct elf_aarch64_link_hash_table *htab; | |
8787 | struct elf_aarch64_link_hash_entry *eh; | |
8788 | ||
8789 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
8790 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
8791 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
8792 | ||
8793 | There is no need to process bfd_link_hash_indirect symbols here | |
8794 | because we will also be presented with the concrete instance of | |
8795 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been | |
8796 | called to copy all relevant data from the generic to the concrete | |
2d0ca824 | 8797 | symbol instance. */ |
1419bbe5 WN |
8798 | if (h->root.type == bfd_link_hash_indirect) |
8799 | return TRUE; | |
8800 | ||
8801 | if (h->root.type == bfd_link_hash_warning) | |
8802 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8803 | ||
8804 | info = (struct bfd_link_info *) inf; | |
8805 | htab = elf_aarch64_hash_table (info); | |
8806 | ||
8807 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
8808 | ||
8809 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it | |
8810 | here if it is defined and referenced in a non-shared object. */ | |
8811 | if (h->type == STT_GNU_IFUNC | |
8812 | && h->def_regular) | |
8813 | return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, | |
8814 | &eh->dyn_relocs, | |
2df3368d | 8815 | NULL, |
1419bbe5 WN |
8816 | htab->plt_entry_size, |
8817 | htab->plt_header_size, | |
233cc9c1 L |
8818 | GOT_ENTRY_SIZE, |
8819 | FALSE); | |
1419bbe5 WN |
8820 | return TRUE; |
8821 | } | |
8822 | ||
8823 | /* Allocate space in .plt, .got and associated reloc sections for | |
8824 | local dynamic relocs. */ | |
8825 | ||
8826 | static bfd_boolean | |
8827 | elfNN_aarch64_allocate_local_dynrelocs (void **slot, void *inf) | |
8828 | { | |
8829 | struct elf_link_hash_entry *h | |
8830 | = (struct elf_link_hash_entry *) *slot; | |
8831 | ||
8832 | if (h->type != STT_GNU_IFUNC | |
8833 | || !h->def_regular | |
8834 | || !h->ref_regular | |
8835 | || !h->forced_local | |
8836 | || h->root.type != bfd_link_hash_defined) | |
8837 | abort (); | |
8838 | ||
8839 | return elfNN_aarch64_allocate_dynrelocs (h, inf); | |
8840 | } | |
8841 | ||
8842 | /* Allocate space in .plt, .got and associated reloc sections for | |
8843 | local ifunc dynamic relocs. */ | |
8844 | ||
8845 | static bfd_boolean | |
8846 | elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf) | |
8847 | { | |
8848 | struct elf_link_hash_entry *h | |
8849 | = (struct elf_link_hash_entry *) *slot; | |
8850 | ||
8851 | if (h->type != STT_GNU_IFUNC | |
8852 | || !h->def_regular | |
8853 | || !h->ref_regular | |
8854 | || !h->forced_local | |
8855 | || h->root.type != bfd_link_hash_defined) | |
8856 | abort (); | |
8857 | ||
8858 | return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf); | |
8859 | } | |
a06ea964 | 8860 | |
63c1f59d AM |
8861 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to |
8862 | read-only sections. */ | |
c2170589 JW |
8863 | |
8864 | static bfd_boolean | |
63c1f59d | 8865 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) |
c2170589 | 8866 | { |
63c1f59d | 8867 | asection *sec; |
c2170589 | 8868 | |
63c1f59d AM |
8869 | if (h->root.type == bfd_link_hash_indirect) |
8870 | return TRUE; | |
c2170589 | 8871 | |
63c1f59d AM |
8872 | sec = readonly_dynrelocs (h); |
8873 | if (sec != NULL) | |
8874 | { | |
8875 | struct bfd_link_info *info = (struct bfd_link_info *) info_p; | |
c2170589 | 8876 | |
63c1f59d AM |
8877 | info->flags |= DF_TEXTREL; |
8878 | info->callbacks->minfo | |
c1c8c1ef | 8879 | (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), |
63c1f59d | 8880 | sec->owner, h->root.root.string, sec); |
c2170589 | 8881 | |
63c1f59d AM |
8882 | /* Not an error, just cut short the traversal. */ |
8883 | return FALSE; | |
c2170589 JW |
8884 | } |
8885 | return TRUE; | |
8886 | } | |
8887 | ||
a06ea964 NC |
8888 | /* This is the most important function of all . Innocuosly named |
8889 | though ! */ | |
2d0ca824 | 8890 | |
a06ea964 | 8891 | static bfd_boolean |
cec5225b | 8892 | elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
8893 | struct bfd_link_info *info) |
8894 | { | |
cec5225b | 8895 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
8896 | bfd *dynobj; |
8897 | asection *s; | |
8898 | bfd_boolean relocs; | |
8899 | bfd *ibfd; | |
8900 | ||
cec5225b | 8901 | htab = elf_aarch64_hash_table ((info)); |
a06ea964 NC |
8902 | dynobj = htab->root.dynobj; |
8903 | ||
8904 | BFD_ASSERT (dynobj != NULL); | |
8905 | ||
8906 | if (htab->root.dynamic_sections_created) | |
8907 | { | |
9b8b325a | 8908 | if (bfd_link_executable (info) && !info->nointerp) |
a06ea964 NC |
8909 | { |
8910 | s = bfd_get_linker_section (dynobj, ".interp"); | |
8911 | if (s == NULL) | |
8912 | abort (); | |
8913 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
8914 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
8915 | } | |
8916 | } | |
8917 | ||
8918 | /* Set up .got offsets for local syms, and space for local dynamic | |
8919 | relocs. */ | |
c72f2fb2 | 8920 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
a06ea964 NC |
8921 | { |
8922 | struct elf_aarch64_local_symbol *locals = NULL; | |
8923 | Elf_Internal_Shdr *symtab_hdr; | |
8924 | asection *srel; | |
8925 | unsigned int i; | |
8926 | ||
8927 | if (!is_aarch64_elf (ibfd)) | |
8928 | continue; | |
8929 | ||
8930 | for (s = ibfd->sections; s != NULL; s = s->next) | |
8931 | { | |
8932 | struct elf_dyn_relocs *p; | |
8933 | ||
8934 | for (p = (struct elf_dyn_relocs *) | |
8935 | (elf_section_data (s)->local_dynrel); p != NULL; p = p->next) | |
8936 | { | |
8937 | if (!bfd_is_abs_section (p->sec) | |
8938 | && bfd_is_abs_section (p->sec->output_section)) | |
8939 | { | |
8940 | /* Input section has been discarded, either because | |
8941 | it is a copy of a linkonce section or due to | |
8942 | linker script /DISCARD/, so we'll be discarding | |
8943 | the relocs too. */ | |
8944 | } | |
8945 | else if (p->count != 0) | |
8946 | { | |
8947 | srel = elf_section_data (p->sec)->sreloc; | |
8948 | srel->size += p->count * RELOC_SIZE (htab); | |
8949 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
8950 | info->flags |= DF_TEXTREL; | |
8951 | } | |
8952 | } | |
8953 | } | |
8954 | ||
cec5225b | 8955 | locals = elf_aarch64_locals (ibfd); |
a06ea964 NC |
8956 | if (!locals) |
8957 | continue; | |
8958 | ||
8959 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
8960 | srel = htab->root.srelgot; | |
8961 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
8962 | { | |
8963 | locals[i].got_offset = (bfd_vma) - 1; | |
8964 | locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
8965 | if (locals[i].got_refcount > 0) | |
8966 | { | |
8967 | unsigned got_type = locals[i].got_type; | |
8968 | if (got_type & GOT_TLSDESC_GD) | |
8969 | { | |
8970 | locals[i].tlsdesc_got_jump_table_offset = | |
8971 | (htab->root.sgotplt->size | |
8972 | - aarch64_compute_jump_table_size (htab)); | |
8973 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
8974 | locals[i].got_offset = (bfd_vma) - 2; | |
8975 | } | |
8976 | ||
8977 | if (got_type & GOT_TLS_GD) | |
8978 | { | |
8979 | locals[i].got_offset = htab->root.sgot->size; | |
8980 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
8981 | } | |
8982 | ||
b53b1bed JW |
8983 | if (got_type & GOT_TLS_IE |
8984 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
8985 | { |
8986 | locals[i].got_offset = htab->root.sgot->size; | |
8987 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8988 | } | |
8989 | ||
8990 | if (got_type == GOT_UNKNOWN) | |
8991 | { | |
8992 | } | |
8993 | ||
0e1862bb | 8994 | if (bfd_link_pic (info)) |
a06ea964 NC |
8995 | { |
8996 | if (got_type & GOT_TLSDESC_GD) | |
8997 | { | |
8998 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8999 | /* Note RELOC_COUNT not incremented here! */ | |
9000 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
9001 | } | |
9002 | ||
9003 | if (got_type & GOT_TLS_GD) | |
9004 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
9005 | ||
b53b1bed JW |
9006 | if (got_type & GOT_TLS_IE |
9007 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
9008 | htab->root.srelgot->size += RELOC_SIZE (htab); |
9009 | } | |
9010 | } | |
9011 | else | |
9012 | { | |
9013 | locals[i].got_refcount = (bfd_vma) - 1; | |
9014 | } | |
9015 | } | |
9016 | } | |
9017 | ||
9018 | ||
9019 | /* Allocate global sym .plt and .got entries, and space for global | |
9020 | sym dynamic relocs. */ | |
cec5225b | 9021 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs, |
a06ea964 NC |
9022 | info); |
9023 | ||
1419bbe5 WN |
9024 | /* Allocate global ifunc sym .plt and .got entries, and space for global |
9025 | ifunc sym dynamic relocs. */ | |
9026 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs, | |
9027 | info); | |
9028 | ||
9029 | /* Allocate .plt and .got entries, and space for local symbols. */ | |
9030 | htab_traverse (htab->loc_hash_table, | |
9031 | elfNN_aarch64_allocate_local_dynrelocs, | |
9032 | info); | |
9033 | ||
9034 | /* Allocate .plt and .got entries, and space for local ifunc symbols. */ | |
9035 | htab_traverse (htab->loc_hash_table, | |
9036 | elfNN_aarch64_allocate_local_ifunc_dynrelocs, | |
9037 | info); | |
a06ea964 NC |
9038 | |
9039 | /* For every jump slot reserved in the sgotplt, reloc_count is | |
9040 | incremented. However, when we reserve space for TLS descriptors, | |
9041 | it's not incremented, so in order to compute the space reserved | |
9042 | for them, it suffices to multiply the reloc count by the jump | |
9043 | slot size. */ | |
9044 | ||
9045 | if (htab->root.srelplt) | |
8847944f | 9046 | htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab); |
a06ea964 NC |
9047 | |
9048 | if (htab->tlsdesc_plt) | |
9049 | { | |
9050 | if (htab->root.splt->size == 0) | |
37c18eed | 9051 | htab->root.splt->size += htab->plt_header_size; |
a06ea964 | 9052 | |
a06ea964 | 9053 | /* If we're not using lazy TLS relocations, don't generate the |
ce12121b | 9054 | GOT and PLT entry required. */ |
a06ea964 NC |
9055 | if (!(info->flags & DF_BIND_NOW)) |
9056 | { | |
ce12121b TC |
9057 | htab->tlsdesc_plt = htab->root.splt->size; |
9058 | htab->root.splt->size += htab->tlsdesc_plt_entry_size; | |
9059 | ||
a06ea964 NC |
9060 | htab->dt_tlsdesc_got = htab->root.sgot->size; |
9061 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
9062 | } | |
9063 | } | |
9064 | ||
68fcca92 | 9065 | /* Init mapping symbols information to use later to distingush between |
4106101c MS |
9066 | code and data while scanning for errata. */ |
9067 | if (htab->fix_erratum_835769 || htab->fix_erratum_843419) | |
68fcca92 JW |
9068 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
9069 | { | |
9070 | if (!is_aarch64_elf (ibfd)) | |
9071 | continue; | |
9072 | bfd_elfNN_aarch64_init_maps (ibfd); | |
9073 | } | |
9074 | ||
a06ea964 NC |
9075 | /* We now have determined the sizes of the various dynamic sections. |
9076 | Allocate memory for them. */ | |
9077 | relocs = FALSE; | |
9078 | for (s = dynobj->sections; s != NULL; s = s->next) | |
9079 | { | |
9080 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9081 | continue; | |
9082 | ||
9083 | if (s == htab->root.splt | |
9084 | || s == htab->root.sgot | |
9085 | || s == htab->root.sgotplt | |
9086 | || s == htab->root.iplt | |
9d19e4fd | 9087 | || s == htab->root.igotplt |
5474d94f AM |
9088 | || s == htab->root.sdynbss |
9089 | || s == htab->root.sdynrelro) | |
a06ea964 NC |
9090 | { |
9091 | /* Strip this section if we don't need it; see the | |
9092 | comment below. */ | |
9093 | } | |
9094 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) | |
9095 | { | |
9096 | if (s->size != 0 && s != htab->root.srelplt) | |
9097 | relocs = TRUE; | |
9098 | ||
9099 | /* We use the reloc_count field as a counter if we need | |
9100 | to copy relocs into the output file. */ | |
9101 | if (s != htab->root.srelplt) | |
9102 | s->reloc_count = 0; | |
9103 | } | |
9104 | else | |
9105 | { | |
9106 | /* It's not one of our sections, so don't allocate space. */ | |
9107 | continue; | |
9108 | } | |
9109 | ||
9110 | if (s->size == 0) | |
9111 | { | |
9112 | /* If we don't need this section, strip it from the | |
9113 | output file. This is mostly to handle .rela.bss and | |
9114 | .rela.plt. We must create both sections in | |
9115 | create_dynamic_sections, because they must be created | |
9116 | before the linker maps input sections to output | |
9117 | sections. The linker does that before | |
9118 | adjust_dynamic_symbol is called, and it is that | |
9119 | function which decides whether anything needs to go | |
9120 | into these sections. */ | |
a06ea964 NC |
9121 | s->flags |= SEC_EXCLUDE; |
9122 | continue; | |
9123 | } | |
9124 | ||
9125 | if ((s->flags & SEC_HAS_CONTENTS) == 0) | |
9126 | continue; | |
9127 | ||
9128 | /* Allocate memory for the section contents. We use bfd_zalloc | |
07d6d2b8 AM |
9129 | here in case unused entries are not reclaimed before the |
9130 | section's contents are written out. This should not happen, | |
9131 | but this way if it does, we get a R_AARCH64_NONE reloc instead | |
9132 | of garbage. */ | |
a06ea964 NC |
9133 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
9134 | if (s->contents == NULL) | |
9135 | return FALSE; | |
9136 | } | |
9137 | ||
9138 | if (htab->root.dynamic_sections_created) | |
9139 | { | |
9140 | /* Add some entries to the .dynamic section. We fill in the | |
07d6d2b8 AM |
9141 | values later, in elfNN_aarch64_finish_dynamic_sections, but we |
9142 | must add the entries now so that we get the correct size for | |
9143 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
9144 | dynamic linker and used by the debugger. */ | |
a06ea964 NC |
9145 | #define add_dynamic_entry(TAG, VAL) \ |
9146 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
9147 | ||
0e1862bb | 9148 | if (bfd_link_executable (info)) |
a06ea964 NC |
9149 | { |
9150 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
9151 | return FALSE; | |
9152 | } | |
9153 | ||
9154 | if (htab->root.splt->size != 0) | |
9155 | { | |
9156 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
9157 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
9158 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
9159 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
9160 | return FALSE; | |
9161 | ||
9162 | if (htab->tlsdesc_plt | |
ce12121b | 9163 | && !(info->flags & DF_BIND_NOW) |
a06ea964 NC |
9164 | && (!add_dynamic_entry (DT_TLSDESC_PLT, 0) |
9165 | || !add_dynamic_entry (DT_TLSDESC_GOT, 0))) | |
9166 | return FALSE; | |
37c18eed | 9167 | |
1dbade74 SD |
9168 | if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_BTI_PAC) |
9169 | && (!add_dynamic_entry (DT_AARCH64_BTI_PLT, 0) | |
9170 | || !add_dynamic_entry (DT_AARCH64_PAC_PLT, 0))) | |
9171 | return FALSE; | |
9172 | ||
9173 | else if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_BTI) | |
9174 | && !add_dynamic_entry (DT_AARCH64_BTI_PLT, 0)) | |
9175 | return FALSE; | |
9176 | ||
9177 | else if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_PAC) | |
9178 | && !add_dynamic_entry (DT_AARCH64_PAC_PLT, 0)) | |
37c18eed | 9179 | return FALSE; |
a06ea964 NC |
9180 | } |
9181 | ||
9182 | if (relocs) | |
9183 | { | |
9184 | if (!add_dynamic_entry (DT_RELA, 0) | |
9185 | || !add_dynamic_entry (DT_RELASZ, 0) | |
9186 | || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) | |
9187 | return FALSE; | |
9188 | ||
9189 | /* If any dynamic relocs apply to a read-only section, | |
9190 | then we need a DT_TEXTREL entry. */ | |
c2170589 | 9191 | if ((info->flags & DF_TEXTREL) == 0) |
63c1f59d | 9192 | elf_link_hash_traverse (&htab->root, maybe_set_textrel, info); |
c2170589 | 9193 | |
a06ea964 NC |
9194 | if ((info->flags & DF_TEXTREL) != 0) |
9195 | { | |
9196 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
9197 | return FALSE; | |
9198 | } | |
9199 | } | |
9200 | } | |
9201 | #undef add_dynamic_entry | |
9202 | ||
9203 | return TRUE; | |
a06ea964 NC |
9204 | } |
9205 | ||
9206 | static inline void | |
caed7120 YZ |
9207 | elf_aarch64_update_plt_entry (bfd *output_bfd, |
9208 | bfd_reloc_code_real_type r_type, | |
9209 | bfd_byte *plt_entry, bfd_vma value) | |
a06ea964 | 9210 | { |
caed7120 YZ |
9211 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type); |
9212 | ||
1d75a8e2 NC |
9213 | /* FIXME: We should check the return value from this function call. */ |
9214 | (void) _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value); | |
a06ea964 NC |
9215 | } |
9216 | ||
9217 | static void | |
cec5225b YZ |
9218 | elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h, |
9219 | struct elf_aarch64_link_hash_table | |
1419bbe5 WN |
9220 | *htab, bfd *output_bfd, |
9221 | struct bfd_link_info *info) | |
a06ea964 NC |
9222 | { |
9223 | bfd_byte *plt_entry; | |
9224 | bfd_vma plt_index; | |
9225 | bfd_vma got_offset; | |
9226 | bfd_vma gotplt_entry_address; | |
9227 | bfd_vma plt_entry_address; | |
9228 | Elf_Internal_Rela rela; | |
9229 | bfd_byte *loc; | |
1419bbe5 WN |
9230 | asection *plt, *gotplt, *relplt; |
9231 | ||
9232 | /* When building a static executable, use .iplt, .igot.plt and | |
9233 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
9234 | if (htab->root.splt != NULL) | |
9235 | { | |
9236 | plt = htab->root.splt; | |
9237 | gotplt = htab->root.sgotplt; | |
9238 | relplt = htab->root.srelplt; | |
9239 | } | |
9240 | else | |
9241 | { | |
9242 | plt = htab->root.iplt; | |
9243 | gotplt = htab->root.igotplt; | |
9244 | relplt = htab->root.irelplt; | |
9245 | } | |
9246 | ||
9247 | /* Get the index in the procedure linkage table which | |
9248 | corresponds to this symbol. This is the index of this symbol | |
9249 | in all the symbols for which we are making plt entries. The | |
9250 | first entry in the procedure linkage table is reserved. | |
a06ea964 | 9251 | |
1419bbe5 WN |
9252 | Get the offset into the .got table of the entry that |
9253 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE | |
9254 | bytes. The first three are reserved for the dynamic linker. | |
692e2b8b | 9255 | |
1419bbe5 WN |
9256 | For static executables, we don't reserve anything. */ |
9257 | ||
9258 | if (plt == htab->root.splt) | |
9259 | { | |
9260 | plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size; | |
9261 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
9262 | } | |
9263 | else | |
9264 | { | |
9265 | plt_index = h->plt.offset / htab->plt_entry_size; | |
9266 | got_offset = plt_index * GOT_ENTRY_SIZE; | |
9267 | } | |
9268 | ||
9269 | plt_entry = plt->contents + h->plt.offset; | |
9270 | plt_entry_address = plt->output_section->vma | |
f44a1f8e | 9271 | + plt->output_offset + h->plt.offset; |
1419bbe5 WN |
9272 | gotplt_entry_address = gotplt->output_section->vma + |
9273 | gotplt->output_offset + got_offset; | |
a06ea964 NC |
9274 | |
9275 | /* Copy in the boiler-plate for the PLTn entry. */ | |
37c18eed SD |
9276 | memcpy (plt_entry, htab->plt_entry, htab->plt_entry_size); |
9277 | ||
9278 | /* First instruction in BTI enabled PLT stub is a BTI | |
9279 | instruction so skip it. */ | |
9280 | if (elf_aarch64_tdata (output_bfd)->plt_type & PLT_BTI | |
9281 | && elf_elfheader (output_bfd)->e_type == ET_EXEC) | |
9282 | plt_entry = plt_entry + 4; | |
a06ea964 NC |
9283 | |
9284 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
9285 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 YZ |
9286 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
9287 | plt_entry, | |
9288 | PG (gotplt_entry_address) - | |
9289 | PG (plt_entry_address)); | |
a06ea964 NC |
9290 | |
9291 | /* Fill in the lo12 bits for the load from the pltgot. */ | |
caed7120 YZ |
9292 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
9293 | plt_entry + 4, | |
9294 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 | 9295 | |
9aff4b7a | 9296 | /* Fill in the lo12 bits for the add from the pltgot entry. */ |
caed7120 YZ |
9297 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
9298 | plt_entry + 8, | |
9299 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 NC |
9300 | |
9301 | /* All the GOTPLT Entries are essentially initialized to PLT0. */ | |
cec5225b | 9302 | bfd_put_NN (output_bfd, |
1419bbe5 WN |
9303 | plt->output_section->vma + plt->output_offset, |
9304 | gotplt->contents + got_offset); | |
a06ea964 | 9305 | |
a06ea964 | 9306 | rela.r_offset = gotplt_entry_address; |
1419bbe5 WN |
9307 | |
9308 | if (h->dynindx == -1 | |
0e1862bb | 9309 | || ((bfd_link_executable (info) |
1419bbe5 WN |
9310 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
9311 | && h->def_regular | |
9312 | && h->type == STT_GNU_IFUNC)) | |
9313 | { | |
9314 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
9315 | R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */ | |
9316 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
9317 | rela.r_addend = (h->root.u.def.value | |
9318 | + h->root.u.def.section->output_section->vma | |
9319 | + h->root.u.def.section->output_offset); | |
9320 | } | |
9321 | else | |
9322 | { | |
9323 | /* Fill in the entry in the .rela.plt section. */ | |
9324 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT)); | |
9325 | rela.r_addend = 0; | |
9326 | } | |
a06ea964 NC |
9327 | |
9328 | /* Compute the relocation entry to used based on PLT index and do | |
9329 | not adjust reloc_count. The reloc_count has already been adjusted | |
9330 | to account for this entry. */ | |
1419bbe5 | 9331 | loc = relplt->contents + plt_index * RELOC_SIZE (htab); |
cec5225b | 9332 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
9333 | } |
9334 | ||
9335 | /* Size sections even though they're not dynamic. We use it to setup | |
9336 | _TLS_MODULE_BASE_, if needed. */ | |
9337 | ||
9338 | static bfd_boolean | |
cec5225b | 9339 | elfNN_aarch64_always_size_sections (bfd *output_bfd, |
a06ea964 NC |
9340 | struct bfd_link_info *info) |
9341 | { | |
9342 | asection *tls_sec; | |
9343 | ||
0e1862bb | 9344 | if (bfd_link_relocatable (info)) |
a06ea964 NC |
9345 | return TRUE; |
9346 | ||
9347 | tls_sec = elf_hash_table (info)->tls_sec; | |
9348 | ||
9349 | if (tls_sec) | |
9350 | { | |
9351 | struct elf_link_hash_entry *tlsbase; | |
9352 | ||
9353 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
9354 | "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE); | |
9355 | ||
9356 | if (tlsbase) | |
9357 | { | |
9358 | struct bfd_link_hash_entry *h = NULL; | |
9359 | const struct elf_backend_data *bed = | |
9360 | get_elf_backend_data (output_bfd); | |
9361 | ||
9362 | if (!(_bfd_generic_link_add_one_symbol | |
9363 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
9364 | tls_sec, 0, NULL, FALSE, bed->collect, &h))) | |
9365 | return FALSE; | |
9366 | ||
9367 | tlsbase->type = STT_TLS; | |
9368 | tlsbase = (struct elf_link_hash_entry *) h; | |
9369 | tlsbase->def_regular = 1; | |
9370 | tlsbase->other = STV_HIDDEN; | |
9371 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
9372 | } | |
9373 | } | |
9374 | ||
9375 | return TRUE; | |
9376 | } | |
9377 | ||
9378 | /* Finish up dynamic symbol handling. We set the contents of various | |
9379 | dynamic sections here. */ | |
2d0ca824 | 9380 | |
a06ea964 | 9381 | static bfd_boolean |
cec5225b | 9382 | elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd, |
a06ea964 NC |
9383 | struct bfd_link_info *info, |
9384 | struct elf_link_hash_entry *h, | |
9385 | Elf_Internal_Sym *sym) | |
9386 | { | |
cec5225b YZ |
9387 | struct elf_aarch64_link_hash_table *htab; |
9388 | htab = elf_aarch64_hash_table (info); | |
a06ea964 NC |
9389 | |
9390 | if (h->plt.offset != (bfd_vma) - 1) | |
9391 | { | |
1419bbe5 WN |
9392 | asection *plt, *gotplt, *relplt; |
9393 | ||
a06ea964 | 9394 | /* This symbol has an entry in the procedure linkage table. Set |
07d6d2b8 | 9395 | it up. */ |
a06ea964 | 9396 | |
1419bbe5 WN |
9397 | /* When building a static executable, use .iplt, .igot.plt and |
9398 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
9399 | if (htab->root.splt != NULL) | |
9400 | { | |
9401 | plt = htab->root.splt; | |
9402 | gotplt = htab->root.sgotplt; | |
9403 | relplt = htab->root.srelplt; | |
9404 | } | |
9405 | else | |
9406 | { | |
9407 | plt = htab->root.iplt; | |
9408 | gotplt = htab->root.igotplt; | |
9409 | relplt = htab->root.irelplt; | |
9410 | } | |
9411 | ||
9412 | /* This symbol has an entry in the procedure linkage table. Set | |
9413 | it up. */ | |
9414 | if ((h->dynindx == -1 | |
0e1862bb | 9415 | && !((h->forced_local || bfd_link_executable (info)) |
1419bbe5 WN |
9416 | && h->def_regular |
9417 | && h->type == STT_GNU_IFUNC)) | |
9418 | || plt == NULL | |
9419 | || gotplt == NULL | |
9420 | || relplt == NULL) | |
f955cccf | 9421 | return FALSE; |
a06ea964 | 9422 | |
1419bbe5 | 9423 | elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info); |
a06ea964 NC |
9424 | if (!h->def_regular) |
9425 | { | |
9426 | /* Mark the symbol as undefined, rather than as defined in | |
46b87d49 | 9427 | the .plt section. */ |
a06ea964 | 9428 | sym->st_shndx = SHN_UNDEF; |
46b87d49 WN |
9429 | /* If the symbol is weak we need to clear the value. |
9430 | Otherwise, the PLT entry would provide a definition for | |
9431 | the symbol even if the symbol wasn't defined anywhere, | |
9432 | and so the symbol would never be NULL. Leave the value if | |
9433 | there were any relocations where pointer equality matters | |
9434 | (this is a clue for the dynamic linker, to make function | |
9435 | pointer comparisons work between an application and shared | |
9436 | library). */ | |
9437 | if (!h->ref_regular_nonweak || !h->pointer_equality_needed) | |
9438 | sym->st_value = 0; | |
a06ea964 NC |
9439 | } |
9440 | } | |
9441 | ||
9442 | if (h->got.offset != (bfd_vma) - 1 | |
a377ae2a SN |
9443 | && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL |
9444 | /* Undefined weak symbol in static PIE resolves to 0 without | |
9445 | any dynamic relocations. */ | |
9446 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
a06ea964 NC |
9447 | { |
9448 | Elf_Internal_Rela rela; | |
9449 | bfd_byte *loc; | |
9450 | ||
9451 | /* This symbol has an entry in the global offset table. Set it | |
07d6d2b8 | 9452 | up. */ |
a06ea964 NC |
9453 | if (htab->root.sgot == NULL || htab->root.srelgot == NULL) |
9454 | abort (); | |
9455 | ||
9456 | rela.r_offset = (htab->root.sgot->output_section->vma | |
9457 | + htab->root.sgot->output_offset | |
9458 | + (h->got.offset & ~(bfd_vma) 1)); | |
9459 | ||
49206388 WN |
9460 | if (h->def_regular |
9461 | && h->type == STT_GNU_IFUNC) | |
9462 | { | |
0e1862bb | 9463 | if (bfd_link_pic (info)) |
49206388 WN |
9464 | { |
9465 | /* Generate R_AARCH64_GLOB_DAT. */ | |
9466 | goto do_glob_dat; | |
9467 | } | |
9468 | else | |
9469 | { | |
9470 | asection *plt; | |
9471 | ||
9472 | if (!h->pointer_equality_needed) | |
9473 | abort (); | |
9474 | ||
9475 | /* For non-shared object, we can't use .got.plt, which | |
9476 | contains the real function address if we need pointer | |
9477 | equality. We load the GOT entry with the PLT entry. */ | |
9478 | plt = htab->root.splt ? htab->root.splt : htab->root.iplt; | |
9479 | bfd_put_NN (output_bfd, (plt->output_section->vma | |
9480 | + plt->output_offset | |
9481 | + h->plt.offset), | |
9482 | htab->root.sgot->contents | |
9483 | + (h->got.offset & ~(bfd_vma) 1)); | |
9484 | return TRUE; | |
9485 | } | |
9486 | } | |
0e1862bb | 9487 | else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h)) |
a06ea964 | 9488 | { |
0ee3a6db | 9489 | if (!(h->def_regular || ELF_COMMON_DEF_P (h))) |
a06ea964 NC |
9490 | return FALSE; |
9491 | ||
9492 | BFD_ASSERT ((h->got.offset & 1) != 0); | |
a6bb11b2 | 9493 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); |
a06ea964 NC |
9494 | rela.r_addend = (h->root.u.def.value |
9495 | + h->root.u.def.section->output_section->vma | |
9496 | + h->root.u.def.section->output_offset); | |
9497 | } | |
9498 | else | |
9499 | { | |
49206388 | 9500 | do_glob_dat: |
a06ea964 | 9501 | BFD_ASSERT ((h->got.offset & 1) == 0); |
cec5225b | 9502 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 | 9503 | htab->root.sgot->contents + h->got.offset); |
a6bb11b2 | 9504 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT)); |
a06ea964 NC |
9505 | rela.r_addend = 0; |
9506 | } | |
9507 | ||
9508 | loc = htab->root.srelgot->contents; | |
9509 | loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 9510 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
9511 | } |
9512 | ||
9513 | if (h->needs_copy) | |
9514 | { | |
9515 | Elf_Internal_Rela rela; | |
5474d94f | 9516 | asection *s; |
a06ea964 NC |
9517 | bfd_byte *loc; |
9518 | ||
9519 | /* This symbol needs a copy reloc. Set it up. */ | |
a06ea964 NC |
9520 | if (h->dynindx == -1 |
9521 | || (h->root.type != bfd_link_hash_defined | |
9522 | && h->root.type != bfd_link_hash_defweak) | |
9d19e4fd | 9523 | || htab->root.srelbss == NULL) |
a06ea964 NC |
9524 | abort (); |
9525 | ||
9526 | rela.r_offset = (h->root.u.def.value | |
9527 | + h->root.u.def.section->output_section->vma | |
9528 | + h->root.u.def.section->output_offset); | |
a6bb11b2 | 9529 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY)); |
a06ea964 | 9530 | rela.r_addend = 0; |
afbf7e8e | 9531 | if (h->root.u.def.section == htab->root.sdynrelro) |
5474d94f AM |
9532 | s = htab->root.sreldynrelro; |
9533 | else | |
9534 | s = htab->root.srelbss; | |
9535 | loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 9536 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
9537 | } |
9538 | ||
9539 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may | |
9540 | be NULL for local symbols. */ | |
9541 | if (sym != NULL | |
9637f6ef | 9542 | && (h == elf_hash_table (info)->hdynamic |
a06ea964 NC |
9543 | || h == elf_hash_table (info)->hgot)) |
9544 | sym->st_shndx = SHN_ABS; | |
9545 | ||
9546 | return TRUE; | |
9547 | } | |
9548 | ||
1419bbe5 WN |
9549 | /* Finish up local dynamic symbol handling. We set the contents of |
9550 | various dynamic sections here. */ | |
9551 | ||
9552 | static bfd_boolean | |
9553 | elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf) | |
9554 | { | |
9555 | struct elf_link_hash_entry *h | |
9556 | = (struct elf_link_hash_entry *) *slot; | |
9557 | struct bfd_link_info *info | |
9558 | = (struct bfd_link_info *) inf; | |
9559 | ||
9560 | return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd, | |
9561 | info, h, NULL); | |
9562 | } | |
9563 | ||
a06ea964 | 9564 | static void |
cec5225b YZ |
9565 | elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED, |
9566 | struct elf_aarch64_link_hash_table | |
a06ea964 NC |
9567 | *htab) |
9568 | { | |
9569 | /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between | |
9570 | small and large plts and at the minute just generates | |
9571 | the small PLT. */ | |
9572 | ||
cec5225b | 9573 | /* PLT0 of the small PLT looks like this in ELF64 - |
a06ea964 NC |
9574 | stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack. |
9575 | adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT | |
9576 | ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the | |
9577 | // symbol resolver | |
9578 | add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the | |
9579 | // GOTPLT entry for this. | |
9580 | br x17 | |
cec5225b | 9581 | PLT0 will be slightly different in ELF32 due to different got entry |
2d0ca824 | 9582 | size. */ |
caed7120 | 9583 | bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */ |
a06ea964 NC |
9584 | bfd_vma plt_base; |
9585 | ||
9586 | ||
37c18eed SD |
9587 | memcpy (htab->root.splt->contents, htab->plt0_entry, |
9588 | htab->plt_header_size); | |
a06ea964 | 9589 | elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize = |
37c18eed | 9590 | htab->plt_header_size; |
a06ea964 | 9591 | |
caed7120 YZ |
9592 | plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma |
9593 | + htab->root.sgotplt->output_offset | |
9594 | + GOT_ENTRY_SIZE * 2); | |
a06ea964 NC |
9595 | |
9596 | plt_base = htab->root.splt->output_section->vma + | |
f44a1f8e | 9597 | htab->root.splt->output_offset; |
a06ea964 | 9598 | |
37c18eed SD |
9599 | /* First instruction in BTI enabled PLT stub is a BTI |
9600 | instruction so skip it. */ | |
9601 | bfd_byte *plt0_entry = htab->root.splt->contents; | |
9602 | if (elf_aarch64_tdata (output_bfd)->plt_type & PLT_BTI) | |
9603 | plt0_entry = plt0_entry + 4; | |
9604 | ||
a06ea964 NC |
9605 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. |
9606 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 | 9607 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
37c18eed | 9608 | plt0_entry + 4, |
caed7120 | 9609 | PG (plt_got_2nd_ent) - PG (plt_base + 4)); |
a06ea964 | 9610 | |
caed7120 | 9611 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
37c18eed | 9612 | plt0_entry + 8, |
caed7120 | 9613 | PG_OFFSET (plt_got_2nd_ent)); |
a06ea964 | 9614 | |
caed7120 | 9615 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
37c18eed | 9616 | plt0_entry + 12, |
caed7120 | 9617 | PG_OFFSET (plt_got_2nd_ent)); |
a06ea964 NC |
9618 | } |
9619 | ||
9620 | static bfd_boolean | |
cec5225b | 9621 | elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd, |
a06ea964 NC |
9622 | struct bfd_link_info *info) |
9623 | { | |
cec5225b | 9624 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
9625 | bfd *dynobj; |
9626 | asection *sdyn; | |
9627 | ||
cec5225b | 9628 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
9629 | dynobj = htab->root.dynobj; |
9630 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); | |
9631 | ||
9632 | if (htab->root.dynamic_sections_created) | |
9633 | { | |
cec5225b | 9634 | ElfNN_External_Dyn *dyncon, *dynconend; |
a06ea964 NC |
9635 | |
9636 | if (sdyn == NULL || htab->root.sgot == NULL) | |
9637 | abort (); | |
9638 | ||
cec5225b YZ |
9639 | dyncon = (ElfNN_External_Dyn *) sdyn->contents; |
9640 | dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size); | |
a06ea964 NC |
9641 | for (; dyncon < dynconend; dyncon++) |
9642 | { | |
9643 | Elf_Internal_Dyn dyn; | |
9644 | asection *s; | |
9645 | ||
cec5225b | 9646 | bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn); |
a06ea964 NC |
9647 | |
9648 | switch (dyn.d_tag) | |
9649 | { | |
9650 | default: | |
9651 | continue; | |
9652 | ||
9653 | case DT_PLTGOT: | |
9654 | s = htab->root.sgotplt; | |
9655 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
9656 | break; | |
9657 | ||
9658 | case DT_JMPREL: | |
4ade44b7 AM |
9659 | s = htab->root.srelplt; |
9660 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
a06ea964 NC |
9661 | break; |
9662 | ||
9663 | case DT_PLTRELSZ: | |
c955de36 | 9664 | s = htab->root.srelplt; |
a06ea964 NC |
9665 | dyn.d_un.d_val = s->size; |
9666 | break; | |
9667 | ||
a06ea964 NC |
9668 | case DT_TLSDESC_PLT: |
9669 | s = htab->root.splt; | |
9670 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
9671 | + htab->tlsdesc_plt; | |
9672 | break; | |
9673 | ||
9674 | case DT_TLSDESC_GOT: | |
9675 | s = htab->root.sgot; | |
ce12121b | 9676 | BFD_ASSERT (htab->dt_tlsdesc_got != (bfd_vma)-1); |
a06ea964 NC |
9677 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset |
9678 | + htab->dt_tlsdesc_got; | |
9679 | break; | |
9680 | } | |
9681 | ||
cec5225b | 9682 | bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon); |
a06ea964 NC |
9683 | } |
9684 | ||
9685 | } | |
9686 | ||
9687 | /* Fill in the special first entry in the procedure linkage table. */ | |
9688 | if (htab->root.splt && htab->root.splt->size > 0) | |
9689 | { | |
cec5225b | 9690 | elfNN_aarch64_init_small_plt0_entry (output_bfd, htab); |
a06ea964 NC |
9691 | |
9692 | elf_section_data (htab->root.splt->output_section)-> | |
9693 | this_hdr.sh_entsize = htab->plt_entry_size; | |
9694 | ||
9695 | ||
ce12121b | 9696 | if (htab->tlsdesc_plt && !(info->flags & DF_BIND_NOW)) |
a06ea964 | 9697 | { |
ce12121b | 9698 | BFD_ASSERT (htab->dt_tlsdesc_got != (bfd_vma)-1); |
cec5225b | 9699 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
9700 | htab->root.sgot->contents + htab->dt_tlsdesc_got); |
9701 | ||
37c18eed SD |
9702 | const bfd_byte *entry = elfNN_aarch64_tlsdesc_small_plt_entry; |
9703 | htab->tlsdesc_plt_entry_size = PLT_TLSDESC_ENTRY_SIZE; | |
9704 | ||
9705 | aarch64_plt_type type = elf_aarch64_tdata (output_bfd)->plt_type; | |
1dbade74 | 9706 | if (type == PLT_BTI || type == PLT_BTI_PAC) |
37c18eed SD |
9707 | { |
9708 | entry = elfNN_aarch64_tlsdesc_small_plt_bti_entry; | |
37c18eed SD |
9709 | } |
9710 | ||
a06ea964 | 9711 | memcpy (htab->root.splt->contents + htab->tlsdesc_plt, |
37c18eed | 9712 | entry, htab->tlsdesc_plt_entry_size); |
a06ea964 NC |
9713 | |
9714 | { | |
9715 | bfd_vma adrp1_addr = | |
9716 | htab->root.splt->output_section->vma | |
9717 | + htab->root.splt->output_offset + htab->tlsdesc_plt + 4; | |
9718 | ||
caed7120 | 9719 | bfd_vma adrp2_addr = adrp1_addr + 4; |
a06ea964 NC |
9720 | |
9721 | bfd_vma got_addr = | |
9722 | htab->root.sgot->output_section->vma | |
9723 | + htab->root.sgot->output_offset; | |
9724 | ||
9725 | bfd_vma pltgot_addr = | |
9726 | htab->root.sgotplt->output_section->vma | |
9727 | + htab->root.sgotplt->output_offset; | |
9728 | ||
9729 | bfd_vma dt_tlsdesc_got = got_addr + htab->dt_tlsdesc_got; | |
caed7120 YZ |
9730 | |
9731 | bfd_byte *plt_entry = | |
9732 | htab->root.splt->contents + htab->tlsdesc_plt; | |
a06ea964 | 9733 | |
37c18eed SD |
9734 | /* First instruction in BTI enabled PLT stub is a BTI |
9735 | instruction so skip it. */ | |
9736 | if (type & PLT_BTI) | |
9737 | { | |
9738 | plt_entry = plt_entry + 4; | |
9739 | adrp1_addr = adrp1_addr + 4; | |
9740 | adrp2_addr = adrp2_addr + 4; | |
9741 | } | |
9742 | ||
a06ea964 | 9743 | /* adrp x2, DT_TLSDESC_GOT */ |
caed7120 YZ |
9744 | elf_aarch64_update_plt_entry (output_bfd, |
9745 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
9746 | plt_entry + 4, | |
9747 | (PG (dt_tlsdesc_got) | |
9748 | - PG (adrp1_addr))); | |
a06ea964 NC |
9749 | |
9750 | /* adrp x3, 0 */ | |
caed7120 YZ |
9751 | elf_aarch64_update_plt_entry (output_bfd, |
9752 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
9753 | plt_entry + 8, | |
9754 | (PG (pltgot_addr) | |
9755 | - PG (adrp2_addr))); | |
a06ea964 NC |
9756 | |
9757 | /* ldr x2, [x2, #0] */ | |
caed7120 YZ |
9758 | elf_aarch64_update_plt_entry (output_bfd, |
9759 | BFD_RELOC_AARCH64_LDSTNN_LO12, | |
9760 | plt_entry + 12, | |
9761 | PG_OFFSET (dt_tlsdesc_got)); | |
a06ea964 NC |
9762 | |
9763 | /* add x3, x3, 0 */ | |
caed7120 YZ |
9764 | elf_aarch64_update_plt_entry (output_bfd, |
9765 | BFD_RELOC_AARCH64_ADD_LO12, | |
9766 | plt_entry + 16, | |
9767 | PG_OFFSET (pltgot_addr)); | |
a06ea964 NC |
9768 | } |
9769 | } | |
9770 | } | |
9771 | ||
9772 | if (htab->root.sgotplt) | |
9773 | { | |
9774 | if (bfd_is_abs_section (htab->root.sgotplt->output_section)) | |
9775 | { | |
4eca0228 | 9776 | _bfd_error_handler |
871b3ab2 | 9777 | (_("discarded output section: `%pA'"), htab->root.sgotplt); |
a06ea964 NC |
9778 | return FALSE; |
9779 | } | |
9780 | ||
9781 | /* Fill in the first three entries in the global offset table. */ | |
9782 | if (htab->root.sgotplt->size > 0) | |
9783 | { | |
8db339a6 MS |
9784 | bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents); |
9785 | ||
a06ea964 | 9786 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ |
cec5225b | 9787 | bfd_put_NN (output_bfd, |
a06ea964 NC |
9788 | (bfd_vma) 0, |
9789 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE); | |
cec5225b | 9790 | bfd_put_NN (output_bfd, |
a06ea964 NC |
9791 | (bfd_vma) 0, |
9792 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2); | |
9793 | } | |
9794 | ||
8db339a6 MS |
9795 | if (htab->root.sgot) |
9796 | { | |
9797 | if (htab->root.sgot->size > 0) | |
9798 | { | |
9799 | bfd_vma addr = | |
9800 | sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0; | |
9801 | bfd_put_NN (output_bfd, addr, htab->root.sgot->contents); | |
9802 | } | |
9803 | } | |
9804 | ||
a06ea964 NC |
9805 | elf_section_data (htab->root.sgotplt->output_section)-> |
9806 | this_hdr.sh_entsize = GOT_ENTRY_SIZE; | |
9807 | } | |
9808 | ||
9809 | if (htab->root.sgot && htab->root.sgot->size > 0) | |
9810 | elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize | |
9811 | = GOT_ENTRY_SIZE; | |
9812 | ||
1419bbe5 WN |
9813 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
9814 | htab_traverse (htab->loc_hash_table, | |
9815 | elfNN_aarch64_finish_local_dynamic_symbol, | |
9816 | info); | |
9817 | ||
a06ea964 NC |
9818 | return TRUE; |
9819 | } | |
9820 | ||
37c18eed SD |
9821 | /* Check if BTI enabled PLTs are needed. Returns the type needed. */ |
9822 | static aarch64_plt_type | |
9823 | get_plt_type (bfd *abfd) | |
9824 | { | |
9825 | aarch64_plt_type ret = PLT_NORMAL; | |
9826 | bfd_byte *contents, *extdyn, *extdynend; | |
9827 | asection *sec = bfd_get_section_by_name (abfd, ".dynamic"); | |
9828 | if (!sec || !bfd_malloc_and_get_section (abfd, sec, &contents)) | |
9829 | return ret; | |
9830 | extdyn = contents; | |
9831 | extdynend = contents + sec->size; | |
9832 | for (; extdyn < extdynend; extdyn += sizeof (ElfNN_External_Dyn)) | |
9833 | { | |
9834 | Elf_Internal_Dyn dyn; | |
9835 | bfd_elfNN_swap_dyn_in (abfd, extdyn, &dyn); | |
9836 | ||
9837 | /* Let's check the processor specific dynamic array tags. */ | |
9838 | bfd_vma tag = dyn.d_tag; | |
9839 | if (tag < DT_LOPROC || tag > DT_HIPROC) | |
9840 | continue; | |
9841 | ||
9842 | switch (tag) | |
9843 | { | |
9844 | case DT_AARCH64_BTI_PLT: | |
1dbade74 SD |
9845 | ret |= PLT_BTI; |
9846 | break; | |
9847 | ||
9848 | case DT_AARCH64_PAC_PLT: | |
9849 | ret |= PLT_PAC; | |
37c18eed SD |
9850 | break; |
9851 | ||
9852 | default: break; | |
9853 | } | |
9854 | } | |
9855 | free (contents); | |
9856 | return ret; | |
9857 | } | |
9858 | ||
9859 | static long | |
9860 | elfNN_aarch64_get_synthetic_symtab (bfd *abfd, | |
9861 | long symcount, | |
9862 | asymbol **syms, | |
9863 | long dynsymcount, | |
9864 | asymbol **dynsyms, | |
9865 | asymbol **ret) | |
9866 | { | |
9867 | elf_aarch64_tdata (abfd)->plt_type = get_plt_type (abfd); | |
9868 | return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms, | |
9869 | dynsymcount, dynsyms, ret); | |
9870 | } | |
9871 | ||
a06ea964 NC |
9872 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
9873 | or (bfd_vma) -1 if it should not be included. */ | |
9874 | ||
9875 | static bfd_vma | |
cec5225b | 9876 | elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt, |
a06ea964 NC |
9877 | const arelent *rel ATTRIBUTE_UNUSED) |
9878 | { | |
37c18eed SD |
9879 | size_t plt0_size = PLT_ENTRY_SIZE; |
9880 | size_t pltn_size = PLT_SMALL_ENTRY_SIZE; | |
9881 | ||
1dbade74 SD |
9882 | if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_BTI_PAC) |
9883 | { | |
1dbade74 SD |
9884 | if (elf_elfheader (plt->owner)->e_type == ET_EXEC) |
9885 | pltn_size = PLT_BTI_PAC_SMALL_ENTRY_SIZE; | |
9886 | else | |
9887 | pltn_size = PLT_PAC_SMALL_ENTRY_SIZE; | |
9888 | } | |
9889 | else if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_BTI) | |
37c18eed | 9890 | { |
37c18eed SD |
9891 | if (elf_elfheader (plt->owner)->e_type == ET_EXEC) |
9892 | pltn_size = PLT_BTI_SMALL_ENTRY_SIZE; | |
9893 | } | |
1dbade74 SD |
9894 | else if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_PAC) |
9895 | { | |
1dbade74 SD |
9896 | pltn_size = PLT_PAC_SMALL_ENTRY_SIZE; |
9897 | } | |
9898 | ||
37c18eed | 9899 | return plt->vma + plt0_size + i * pltn_size; |
a06ea964 NC |
9900 | } |
9901 | ||
d691934d NC |
9902 | /* Returns TRUE if NAME is an AArch64 mapping symbol. |
9903 | The ARM ELF standard defines $x (for A64 code) and $d (for data). | |
9904 | It also allows a period initiated suffix to be added to the symbol, ie: | |
9905 | "$[adtx]\.[:sym_char]+". */ | |
9906 | ||
9907 | static bfd_boolean | |
9908 | is_aarch64_mapping_symbol (const char * name) | |
9909 | { | |
9910 | return name != NULL /* Paranoia. */ | |
9911 | && name[0] == '$' /* Note: if objcopy --prefix-symbols has been used then | |
9912 | the mapping symbols could have acquired a prefix. | |
9913 | We do not support this here, since such symbols no | |
9914 | longer conform to the ARM ELF ABI. */ | |
9915 | && (name[1] == 'd' || name[1] == 'x') | |
9916 | && (name[2] == 0 || name[2] == '.'); | |
9917 | /* FIXME: Strictly speaking the symbol is only a valid mapping symbol if | |
9918 | any characters that follow the period are legal characters for the body | |
9919 | of a symbol's name. For now we just assume that this is the case. */ | |
9920 | } | |
9921 | ||
9922 | /* Make sure that mapping symbols in object files are not removed via the | |
9923 | "strip --strip-unneeded" tool. These symbols might needed in order to | |
9924 | correctly generate linked files. Once an object file has been linked, | |
9925 | it should be safe to remove them. */ | |
9926 | ||
9927 | static void | |
9928 | elfNN_aarch64_backend_symbol_processing (bfd *abfd, asymbol *sym) | |
9929 | { | |
9930 | if (((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
9931 | && sym->section != bfd_abs_section_ptr | |
9932 | && is_aarch64_mapping_symbol (sym->name)) | |
9933 | sym->flags |= BSF_KEEP; | |
9934 | } | |
9935 | ||
cd702818 SD |
9936 | /* Implement elf_backend_setup_gnu_properties for AArch64. It serves as a |
9937 | wrapper function for _bfd_aarch64_elf_link_setup_gnu_properties to account | |
9938 | for the effect of GNU properties of the output_bfd. */ | |
9939 | static bfd * | |
9940 | elfNN_aarch64_link_setup_gnu_properties (struct bfd_link_info *info) | |
9941 | { | |
9942 | uint32_t prop = elf_aarch64_tdata (info->output_bfd)->gnu_and_prop; | |
9943 | bfd *pbfd = _bfd_aarch64_elf_link_setup_gnu_properties (info, &prop); | |
9944 | elf_aarch64_tdata (info->output_bfd)->gnu_and_prop = prop; | |
37c18eed SD |
9945 | elf_aarch64_tdata (info->output_bfd)->plt_type |
9946 | |= (prop & GNU_PROPERTY_AARCH64_FEATURE_1_BTI) ? PLT_BTI : 0; | |
9947 | setup_plt_values (info, elf_aarch64_tdata (info->output_bfd)->plt_type); | |
cd702818 SD |
9948 | return pbfd; |
9949 | } | |
9950 | ||
9951 | /* Implement elf_backend_merge_gnu_properties for AArch64. It serves as a | |
9952 | wrapper function for _bfd_aarch64_elf_merge_gnu_properties to account | |
9953 | for the effect of GNU properties of the output_bfd. */ | |
9954 | static bfd_boolean | |
9955 | elfNN_aarch64_merge_gnu_properties (struct bfd_link_info *info, | |
4e539114 | 9956 | bfd *abfd, bfd *bbfd, |
cd702818 SD |
9957 | elf_property *aprop, |
9958 | elf_property *bprop) | |
9959 | { | |
9960 | uint32_t prop | |
9961 | = elf_aarch64_tdata (info->output_bfd)->gnu_and_prop; | |
37c18eed SD |
9962 | |
9963 | /* If output has been marked with BTI using command line argument, give out | |
9964 | warning if necessary. */ | |
4e539114 SD |
9965 | /* Properties are merged per type, hence only check for warnings when merging |
9966 | GNU_PROPERTY_AARCH64_FEATURE_1_AND. */ | |
9967 | if (((aprop && aprop->pr_type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) | |
9968 | || (bprop && bprop->pr_type == GNU_PROPERTY_AARCH64_FEATURE_1_AND)) | |
9969 | && (prop & GNU_PROPERTY_AARCH64_FEATURE_1_BTI) | |
37c18eed SD |
9970 | && (!elf_aarch64_tdata (info->output_bfd)->no_bti_warn)) |
9971 | { | |
9972 | if ((aprop && !(aprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI)) | |
4e539114 | 9973 | || !aprop) |
37c18eed | 9974 | { |
4e539114 SD |
9975 | _bfd_error_handler (_("%pB: warning: BTI turned on by --force-bti when " |
9976 | "all inputs do not have BTI in NOTE section."), | |
9977 | abfd); | |
9978 | } | |
9979 | if ((bprop && !(bprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI)) | |
9980 | || !bprop) | |
9981 | { | |
9982 | _bfd_error_handler (_("%pB: warning: BTI turned on by --force-bti when " | |
9983 | "all inputs do not have BTI in NOTE section."), | |
9984 | bbfd); | |
37c18eed SD |
9985 | } |
9986 | } | |
9987 | ||
cd702818 SD |
9988 | return _bfd_aarch64_elf_merge_gnu_properties (info, abfd, aprop, |
9989 | bprop, prop); | |
9990 | } | |
a06ea964 NC |
9991 | |
9992 | /* We use this so we can override certain functions | |
9993 | (though currently we don't). */ | |
9994 | ||
cec5225b | 9995 | const struct elf_size_info elfNN_aarch64_size_info = |
a06ea964 | 9996 | { |
cec5225b YZ |
9997 | sizeof (ElfNN_External_Ehdr), |
9998 | sizeof (ElfNN_External_Phdr), | |
9999 | sizeof (ElfNN_External_Shdr), | |
10000 | sizeof (ElfNN_External_Rel), | |
10001 | sizeof (ElfNN_External_Rela), | |
10002 | sizeof (ElfNN_External_Sym), | |
10003 | sizeof (ElfNN_External_Dyn), | |
a06ea964 NC |
10004 | sizeof (Elf_External_Note), |
10005 | 4, /* Hash table entry size. */ | |
10006 | 1, /* Internal relocs per external relocs. */ | |
cec5225b YZ |
10007 | ARCH_SIZE, /* Arch size. */ |
10008 | LOG_FILE_ALIGN, /* Log_file_align. */ | |
10009 | ELFCLASSNN, EV_CURRENT, | |
10010 | bfd_elfNN_write_out_phdrs, | |
10011 | bfd_elfNN_write_shdrs_and_ehdr, | |
10012 | bfd_elfNN_checksum_contents, | |
10013 | bfd_elfNN_write_relocs, | |
10014 | bfd_elfNN_swap_symbol_in, | |
10015 | bfd_elfNN_swap_symbol_out, | |
10016 | bfd_elfNN_slurp_reloc_table, | |
10017 | bfd_elfNN_slurp_symbol_table, | |
10018 | bfd_elfNN_swap_dyn_in, | |
10019 | bfd_elfNN_swap_dyn_out, | |
10020 | bfd_elfNN_swap_reloc_in, | |
10021 | bfd_elfNN_swap_reloc_out, | |
10022 | bfd_elfNN_swap_reloca_in, | |
10023 | bfd_elfNN_swap_reloca_out | |
a06ea964 NC |
10024 | }; |
10025 | ||
10026 | #define ELF_ARCH bfd_arch_aarch64 | |
10027 | #define ELF_MACHINE_CODE EM_AARCH64 | |
10028 | #define ELF_MAXPAGESIZE 0x10000 | |
10029 | #define ELF_MINPAGESIZE 0x1000 | |
10030 | #define ELF_COMMONPAGESIZE 0x1000 | |
10031 | ||
07d6d2b8 | 10032 | #define bfd_elfNN_close_and_cleanup \ |
cec5225b | 10033 | elfNN_aarch64_close_and_cleanup |
a06ea964 | 10034 | |
07d6d2b8 | 10035 | #define bfd_elfNN_bfd_free_cached_info \ |
cec5225b | 10036 | elfNN_aarch64_bfd_free_cached_info |
a06ea964 | 10037 | |
cec5225b YZ |
10038 | #define bfd_elfNN_bfd_is_target_special_symbol \ |
10039 | elfNN_aarch64_is_target_special_symbol | |
a06ea964 | 10040 | |
07d6d2b8 | 10041 | #define bfd_elfNN_bfd_link_hash_table_create \ |
cec5225b | 10042 | elfNN_aarch64_link_hash_table_create |
a06ea964 | 10043 | |
cec5225b YZ |
10044 | #define bfd_elfNN_bfd_merge_private_bfd_data \ |
10045 | elfNN_aarch64_merge_private_bfd_data | |
a06ea964 | 10046 | |
cec5225b YZ |
10047 | #define bfd_elfNN_bfd_print_private_bfd_data \ |
10048 | elfNN_aarch64_print_private_bfd_data | |
a06ea964 | 10049 | |
cec5225b YZ |
10050 | #define bfd_elfNN_bfd_reloc_type_lookup \ |
10051 | elfNN_aarch64_reloc_type_lookup | |
a06ea964 | 10052 | |
cec5225b YZ |
10053 | #define bfd_elfNN_bfd_reloc_name_lookup \ |
10054 | elfNN_aarch64_reloc_name_lookup | |
a06ea964 | 10055 | |
cec5225b YZ |
10056 | #define bfd_elfNN_bfd_set_private_flags \ |
10057 | elfNN_aarch64_set_private_flags | |
a06ea964 | 10058 | |
cec5225b YZ |
10059 | #define bfd_elfNN_find_inliner_info \ |
10060 | elfNN_aarch64_find_inliner_info | |
a06ea964 | 10061 | |
cec5225b YZ |
10062 | #define bfd_elfNN_find_nearest_line \ |
10063 | elfNN_aarch64_find_nearest_line | |
a06ea964 | 10064 | |
37c18eed SD |
10065 | #define bfd_elfNN_get_synthetic_symtab \ |
10066 | elfNN_aarch64_get_synthetic_symtab | |
10067 | ||
cec5225b YZ |
10068 | #define bfd_elfNN_mkobject \ |
10069 | elfNN_aarch64_mkobject | |
a06ea964 | 10070 | |
cec5225b YZ |
10071 | #define bfd_elfNN_new_section_hook \ |
10072 | elfNN_aarch64_new_section_hook | |
a06ea964 NC |
10073 | |
10074 | #define elf_backend_adjust_dynamic_symbol \ | |
cec5225b | 10075 | elfNN_aarch64_adjust_dynamic_symbol |
a06ea964 NC |
10076 | |
10077 | #define elf_backend_always_size_sections \ | |
cec5225b | 10078 | elfNN_aarch64_always_size_sections |
a06ea964 NC |
10079 | |
10080 | #define elf_backend_check_relocs \ | |
cec5225b | 10081 | elfNN_aarch64_check_relocs |
a06ea964 NC |
10082 | |
10083 | #define elf_backend_copy_indirect_symbol \ | |
cec5225b | 10084 | elfNN_aarch64_copy_indirect_symbol |
a06ea964 NC |
10085 | |
10086 | /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts | |
10087 | to them in our hash. */ | |
10088 | #define elf_backend_create_dynamic_sections \ | |
cec5225b | 10089 | elfNN_aarch64_create_dynamic_sections |
a06ea964 NC |
10090 | |
10091 | #define elf_backend_init_index_section \ | |
10092 | _bfd_elf_init_2_index_sections | |
10093 | ||
a06ea964 | 10094 | #define elf_backend_finish_dynamic_sections \ |
cec5225b | 10095 | elfNN_aarch64_finish_dynamic_sections |
a06ea964 NC |
10096 | |
10097 | #define elf_backend_finish_dynamic_symbol \ | |
cec5225b | 10098 | elfNN_aarch64_finish_dynamic_symbol |
a06ea964 | 10099 | |
a06ea964 | 10100 | #define elf_backend_object_p \ |
cec5225b | 10101 | elfNN_aarch64_object_p |
a06ea964 | 10102 | |
07d6d2b8 | 10103 | #define elf_backend_output_arch_local_syms \ |
cec5225b | 10104 | elfNN_aarch64_output_arch_local_syms |
a06ea964 NC |
10105 | |
10106 | #define elf_backend_plt_sym_val \ | |
cec5225b | 10107 | elfNN_aarch64_plt_sym_val |
a06ea964 NC |
10108 | |
10109 | #define elf_backend_post_process_headers \ | |
cec5225b | 10110 | elfNN_aarch64_post_process_headers |
a06ea964 NC |
10111 | |
10112 | #define elf_backend_relocate_section \ | |
cec5225b | 10113 | elfNN_aarch64_relocate_section |
a06ea964 NC |
10114 | |
10115 | #define elf_backend_reloc_type_class \ | |
cec5225b | 10116 | elfNN_aarch64_reloc_type_class |
a06ea964 | 10117 | |
a06ea964 | 10118 | #define elf_backend_section_from_shdr \ |
cec5225b | 10119 | elfNN_aarch64_section_from_shdr |
a06ea964 NC |
10120 | |
10121 | #define elf_backend_size_dynamic_sections \ | |
cec5225b | 10122 | elfNN_aarch64_size_dynamic_sections |
a06ea964 NC |
10123 | |
10124 | #define elf_backend_size_info \ | |
cec5225b | 10125 | elfNN_aarch64_size_info |
a06ea964 | 10126 | |
68fcca92 JW |
10127 | #define elf_backend_write_section \ |
10128 | elfNN_aarch64_write_section | |
10129 | ||
d691934d NC |
10130 | #define elf_backend_symbol_processing \ |
10131 | elfNN_aarch64_backend_symbol_processing | |
10132 | ||
cd702818 SD |
10133 | #define elf_backend_setup_gnu_properties \ |
10134 | elfNN_aarch64_link_setup_gnu_properties | |
10135 | ||
10136 | #define elf_backend_merge_gnu_properties \ | |
10137 | elfNN_aarch64_merge_gnu_properties | |
10138 | ||
a06ea964 | 10139 | #define elf_backend_can_refcount 1 |
59c108f7 | 10140 | #define elf_backend_can_gc_sections 1 |
a06ea964 NC |
10141 | #define elf_backend_plt_readonly 1 |
10142 | #define elf_backend_want_got_plt 1 | |
10143 | #define elf_backend_want_plt_sym 0 | |
5474d94f | 10144 | #define elf_backend_want_dynrelro 1 |
a06ea964 NC |
10145 | #define elf_backend_may_use_rel_p 0 |
10146 | #define elf_backend_may_use_rela_p 1 | |
10147 | #define elf_backend_default_use_rela_p 1 | |
07d6d2b8 | 10148 | #define elf_backend_rela_normal 1 |
64f52338 | 10149 | #define elf_backend_dtrel_excludes_plt 1 |
a06ea964 | 10150 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3) |
c495064d | 10151 | #define elf_backend_default_execstack 0 |
32f573bc | 10152 | #define elf_backend_extern_protected_data 1 |
7f784814 | 10153 | #define elf_backend_hash_symbol elf_aarch64_hash_symbol |
a06ea964 | 10154 | |
07d6d2b8 | 10155 | #undef elf_backend_obj_attrs_section |
a06ea964 NC |
10156 | #define elf_backend_obj_attrs_section ".ARM.attributes" |
10157 | ||
cec5225b | 10158 | #include "elfNN-target.h" |
a75cf613 ES |
10159 | |
10160 | /* CloudABI support. */ | |
10161 | ||
10162 | #undef TARGET_LITTLE_SYM | |
10163 | #define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec | |
10164 | #undef TARGET_LITTLE_NAME | |
10165 | #define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi" | |
10166 | #undef TARGET_BIG_SYM | |
10167 | #define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec | |
10168 | #undef TARGET_BIG_NAME | |
10169 | #define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi" | |
10170 | ||
10171 | #undef ELF_OSABI | |
10172 | #define ELF_OSABI ELFOSABI_CLOUDABI | |
10173 | ||
10174 | #undef elfNN_bed | |
10175 | #define elfNN_bed elfNN_aarch64_cloudabi_bed | |
10176 | ||
10177 | #include "elfNN-target.h" |