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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 MS |
2630 | /* Fix erratum 843419. */ |
2631 | int fix_erratum_843419; | |
2632 | ||
2633 | /* Enable ADRP->ADR rewrite for erratum 843419 workaround. */ | |
2634 | int fix_erratum_843419_adr; | |
2635 | ||
1f56df9d JW |
2636 | /* Don't apply link-time values for dynamic relocations. */ |
2637 | int no_apply_dynamic_relocs; | |
2638 | ||
a06ea964 NC |
2639 | /* The number of bytes in the initial entry in the PLT. */ |
2640 | bfd_size_type plt_header_size; | |
2641 | ||
37c18eed SD |
2642 | /* The bytes of the initial PLT entry. */ |
2643 | const bfd_byte *plt0_entry; | |
2644 | ||
2645 | /* The number of bytes in the subsequent PLT entries. */ | |
a06ea964 NC |
2646 | bfd_size_type plt_entry_size; |
2647 | ||
37c18eed SD |
2648 | /* The bytes of the subsequent PLT entry. */ |
2649 | const bfd_byte *plt_entry; | |
2650 | ||
a06ea964 NC |
2651 | /* Small local sym cache. */ |
2652 | struct sym_cache sym_cache; | |
2653 | ||
2654 | /* For convenience in allocate_dynrelocs. */ | |
2655 | bfd *obfd; | |
2656 | ||
2657 | /* The amount of space used by the reserved portion of the sgotplt | |
2658 | section, plus whatever space is used by the jump slots. */ | |
2659 | bfd_vma sgotplt_jump_table_size; | |
2660 | ||
2661 | /* The stub hash table. */ | |
2662 | struct bfd_hash_table stub_hash_table; | |
2663 | ||
2664 | /* Linker stub bfd. */ | |
2665 | bfd *stub_bfd; | |
2666 | ||
2667 | /* Linker call-backs. */ | |
2668 | asection *(*add_stub_section) (const char *, asection *); | |
2669 | void (*layout_sections_again) (void); | |
2670 | ||
2671 | /* Array to keep track of which stub sections have been created, and | |
2672 | information on stub grouping. */ | |
2673 | struct map_stub | |
2674 | { | |
2675 | /* This is the section to which stubs in the group will be | |
2676 | attached. */ | |
2677 | asection *link_sec; | |
2678 | /* The stub section. */ | |
2679 | asection *stub_sec; | |
2680 | } *stub_group; | |
2681 | ||
cec5225b | 2682 | /* Assorted information used by elfNN_aarch64_size_stubs. */ |
a06ea964 | 2683 | unsigned int bfd_count; |
7292b3ac | 2684 | unsigned int top_index; |
a06ea964 NC |
2685 | asection **input_list; |
2686 | ||
2687 | /* The offset into splt of the PLT entry for the TLS descriptor | |
2688 | resolver. Special values are 0, if not necessary (or not found | |
2689 | to be necessary yet), and -1 if needed but not determined | |
2690 | yet. */ | |
2691 | bfd_vma tlsdesc_plt; | |
2692 | ||
37c18eed SD |
2693 | /* The number of bytes in the PLT enty for the TLS descriptor. */ |
2694 | bfd_size_type tlsdesc_plt_entry_size; | |
2695 | ||
a06ea964 NC |
2696 | /* The GOT offset for the lazy trampoline. Communicated to the |
2697 | loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1 | |
2698 | indicates an offset is not allocated. */ | |
2699 | bfd_vma dt_tlsdesc_got; | |
1419bbe5 WN |
2700 | |
2701 | /* Used by local STT_GNU_IFUNC symbols. */ | |
2702 | htab_t loc_hash_table; | |
2703 | void * loc_hash_memory; | |
a06ea964 NC |
2704 | }; |
2705 | ||
a06ea964 NC |
2706 | /* Create an entry in an AArch64 ELF linker hash table. */ |
2707 | ||
2708 | static struct bfd_hash_entry * | |
cec5225b | 2709 | elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry, |
a06ea964 NC |
2710 | struct bfd_hash_table *table, |
2711 | const char *string) | |
2712 | { | |
cec5225b YZ |
2713 | struct elf_aarch64_link_hash_entry *ret = |
2714 | (struct elf_aarch64_link_hash_entry *) entry; | |
a06ea964 NC |
2715 | |
2716 | /* Allocate the structure if it has not already been allocated by a | |
2717 | subclass. */ | |
2718 | if (ret == NULL) | |
2719 | ret = bfd_hash_allocate (table, | |
cec5225b | 2720 | sizeof (struct elf_aarch64_link_hash_entry)); |
a06ea964 NC |
2721 | if (ret == NULL) |
2722 | return (struct bfd_hash_entry *) ret; | |
2723 | ||
2724 | /* Call the allocation method of the superclass. */ | |
cec5225b | 2725 | ret = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
2726 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
2727 | table, string)); | |
2728 | if (ret != NULL) | |
2729 | { | |
2730 | ret->dyn_relocs = NULL; | |
a06ea964 NC |
2731 | ret->got_type = GOT_UNKNOWN; |
2732 | ret->plt_got_offset = (bfd_vma) - 1; | |
2733 | ret->stub_cache = NULL; | |
2734 | ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
2735 | } | |
2736 | ||
2737 | return (struct bfd_hash_entry *) ret; | |
2738 | } | |
2739 | ||
2740 | /* Initialize an entry in the stub hash table. */ | |
2741 | ||
2742 | static struct bfd_hash_entry * | |
2743 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
2744 | struct bfd_hash_table *table, const char *string) | |
2745 | { | |
2746 | /* Allocate the structure if it has not already been allocated by a | |
2747 | subclass. */ | |
2748 | if (entry == NULL) | |
2749 | { | |
2750 | entry = bfd_hash_allocate (table, | |
2751 | sizeof (struct | |
cec5225b | 2752 | elf_aarch64_stub_hash_entry)); |
a06ea964 NC |
2753 | if (entry == NULL) |
2754 | return entry; | |
2755 | } | |
2756 | ||
2757 | /* Call the allocation method of the superclass. */ | |
2758 | entry = bfd_hash_newfunc (entry, table, string); | |
2759 | if (entry != NULL) | |
2760 | { | |
cec5225b | 2761 | struct elf_aarch64_stub_hash_entry *eh; |
a06ea964 NC |
2762 | |
2763 | /* Initialize the local fields. */ | |
cec5225b | 2764 | eh = (struct elf_aarch64_stub_hash_entry *) entry; |
4106101c | 2765 | eh->adrp_offset = 0; |
a06ea964 NC |
2766 | eh->stub_sec = NULL; |
2767 | eh->stub_offset = 0; | |
2768 | eh->target_value = 0; | |
2769 | eh->target_section = NULL; | |
2770 | eh->stub_type = aarch64_stub_none; | |
2771 | eh->h = NULL; | |
2772 | eh->id_sec = NULL; | |
2773 | } | |
2774 | ||
2775 | return entry; | |
2776 | } | |
2777 | ||
1419bbe5 WN |
2778 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry |
2779 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
2780 | as global symbol. We reuse indx and dynstr_index for local symbol | |
2781 | hash since they aren't used by global symbols in this backend. */ | |
2782 | ||
2783 | static hashval_t | |
2784 | elfNN_aarch64_local_htab_hash (const void *ptr) | |
2785 | { | |
2786 | struct elf_link_hash_entry *h | |
2787 | = (struct elf_link_hash_entry *) ptr; | |
2788 | return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); | |
2789 | } | |
2790 | ||
2791 | /* Compare local hash entries. */ | |
2792 | ||
2793 | static int | |
2794 | elfNN_aarch64_local_htab_eq (const void *ptr1, const void *ptr2) | |
2795 | { | |
2796 | struct elf_link_hash_entry *h1 | |
2797 | = (struct elf_link_hash_entry *) ptr1; | |
2798 | struct elf_link_hash_entry *h2 | |
2799 | = (struct elf_link_hash_entry *) ptr2; | |
2800 | ||
2801 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
2802 | } | |
2803 | ||
2804 | /* Find and/or create a hash entry for local symbol. */ | |
2805 | ||
2806 | static struct elf_link_hash_entry * | |
2807 | elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table *htab, | |
2808 | bfd *abfd, const Elf_Internal_Rela *rel, | |
2809 | bfd_boolean create) | |
2810 | { | |
2811 | struct elf_aarch64_link_hash_entry e, *ret; | |
2812 | asection *sec = abfd->sections; | |
2813 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, | |
2814 | ELFNN_R_SYM (rel->r_info)); | |
2815 | void **slot; | |
2816 | ||
2817 | e.root.indx = sec->id; | |
2818 | e.root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2819 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, | |
2820 | create ? INSERT : NO_INSERT); | |
2821 | ||
2822 | if (!slot) | |
2823 | return NULL; | |
2824 | ||
2825 | if (*slot) | |
2826 | { | |
2827 | ret = (struct elf_aarch64_link_hash_entry *) *slot; | |
2828 | return &ret->root; | |
2829 | } | |
2830 | ||
2831 | ret = (struct elf_aarch64_link_hash_entry *) | |
2832 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, | |
2833 | sizeof (struct elf_aarch64_link_hash_entry)); | |
2834 | if (ret) | |
2835 | { | |
2836 | memset (ret, 0, sizeof (*ret)); | |
2837 | ret->root.indx = sec->id; | |
2838 | ret->root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2839 | ret->root.dynindx = -1; | |
2840 | *slot = ret; | |
2841 | } | |
2842 | return &ret->root; | |
2843 | } | |
a06ea964 NC |
2844 | |
2845 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
2846 | ||
2847 | static void | |
cec5225b | 2848 | elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info, |
a06ea964 NC |
2849 | struct elf_link_hash_entry *dir, |
2850 | struct elf_link_hash_entry *ind) | |
2851 | { | |
cec5225b | 2852 | struct elf_aarch64_link_hash_entry *edir, *eind; |
a06ea964 | 2853 | |
cec5225b YZ |
2854 | edir = (struct elf_aarch64_link_hash_entry *) dir; |
2855 | eind = (struct elf_aarch64_link_hash_entry *) ind; | |
a06ea964 NC |
2856 | |
2857 | if (eind->dyn_relocs != NULL) | |
2858 | { | |
2859 | if (edir->dyn_relocs != NULL) | |
2860 | { | |
2861 | struct elf_dyn_relocs **pp; | |
2862 | struct elf_dyn_relocs *p; | |
2863 | ||
2864 | /* Add reloc counts against the indirect sym to the direct sym | |
2865 | list. Merge any entries against the same section. */ | |
2866 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) | |
2867 | { | |
2868 | struct elf_dyn_relocs *q; | |
2869 | ||
2870 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
2871 | if (q->sec == p->sec) | |
2872 | { | |
2873 | q->pc_count += p->pc_count; | |
2874 | q->count += p->count; | |
2875 | *pp = p->next; | |
2876 | break; | |
2877 | } | |
2878 | if (q == NULL) | |
2879 | pp = &p->next; | |
2880 | } | |
2881 | *pp = edir->dyn_relocs; | |
2882 | } | |
2883 | ||
2884 | edir->dyn_relocs = eind->dyn_relocs; | |
2885 | eind->dyn_relocs = NULL; | |
2886 | } | |
2887 | ||
a06ea964 NC |
2888 | if (ind->root.type == bfd_link_hash_indirect) |
2889 | { | |
2890 | /* Copy over PLT info. */ | |
2891 | if (dir->got.refcount <= 0) | |
2892 | { | |
2893 | edir->got_type = eind->got_type; | |
2894 | eind->got_type = GOT_UNKNOWN; | |
2895 | } | |
2896 | } | |
2897 | ||
2898 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
2899 | } | |
2900 | ||
68faa637 AM |
2901 | /* Destroy an AArch64 elf linker hash table. */ |
2902 | ||
2903 | static void | |
d495ab0d | 2904 | elfNN_aarch64_link_hash_table_free (bfd *obfd) |
68faa637 AM |
2905 | { |
2906 | struct elf_aarch64_link_hash_table *ret | |
d495ab0d | 2907 | = (struct elf_aarch64_link_hash_table *) obfd->link.hash; |
68faa637 AM |
2908 | |
2909 | if (ret->loc_hash_table) | |
2910 | htab_delete (ret->loc_hash_table); | |
2911 | if (ret->loc_hash_memory) | |
2912 | objalloc_free ((struct objalloc *) ret->loc_hash_memory); | |
2913 | ||
2914 | bfd_hash_table_free (&ret->stub_hash_table); | |
d495ab0d | 2915 | _bfd_elf_link_hash_table_free (obfd); |
68faa637 AM |
2916 | } |
2917 | ||
a06ea964 NC |
2918 | /* Create an AArch64 elf linker hash table. */ |
2919 | ||
2920 | static struct bfd_link_hash_table * | |
cec5225b | 2921 | elfNN_aarch64_link_hash_table_create (bfd *abfd) |
a06ea964 | 2922 | { |
cec5225b YZ |
2923 | struct elf_aarch64_link_hash_table *ret; |
2924 | bfd_size_type amt = sizeof (struct elf_aarch64_link_hash_table); | |
a06ea964 | 2925 | |
7bf52ea2 | 2926 | ret = bfd_zmalloc (amt); |
a06ea964 NC |
2927 | if (ret == NULL) |
2928 | return NULL; | |
2929 | ||
2930 | if (!_bfd_elf_link_hash_table_init | |
cec5225b YZ |
2931 | (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc, |
2932 | sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA)) | |
a06ea964 NC |
2933 | { |
2934 | free (ret); | |
2935 | return NULL; | |
2936 | } | |
2937 | ||
a06ea964 | 2938 | ret->plt_header_size = PLT_ENTRY_SIZE; |
37c18eed | 2939 | ret->plt0_entry = elfNN_aarch64_small_plt0_entry; |
a06ea964 | 2940 | ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE; |
37c18eed SD |
2941 | ret->plt_entry = elfNN_aarch64_small_plt_entry; |
2942 | ret->tlsdesc_plt_entry_size = PLT_TLSDESC_ENTRY_SIZE; | |
a06ea964 | 2943 | ret->obfd = abfd; |
a06ea964 NC |
2944 | ret->dt_tlsdesc_got = (bfd_vma) - 1; |
2945 | ||
2946 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc, | |
cec5225b | 2947 | sizeof (struct elf_aarch64_stub_hash_entry))) |
a06ea964 | 2948 | { |
d495ab0d | 2949 | _bfd_elf_link_hash_table_free (abfd); |
a06ea964 NC |
2950 | return NULL; |
2951 | } | |
2952 | ||
1419bbe5 WN |
2953 | ret->loc_hash_table = htab_try_create (1024, |
2954 | elfNN_aarch64_local_htab_hash, | |
2955 | elfNN_aarch64_local_htab_eq, | |
2956 | NULL); | |
2957 | ret->loc_hash_memory = objalloc_create (); | |
2958 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
2959 | { | |
d495ab0d | 2960 | elfNN_aarch64_link_hash_table_free (abfd); |
1419bbe5 WN |
2961 | return NULL; |
2962 | } | |
d495ab0d | 2963 | ret->root.root.hash_table_free = elfNN_aarch64_link_hash_table_free; |
1419bbe5 | 2964 | |
a06ea964 NC |
2965 | return &ret->root.root; |
2966 | } | |
2967 | ||
1d75a8e2 NC |
2968 | /* Perform relocation R_TYPE. Returns TRUE upon success, FALSE otherwise. */ |
2969 | ||
a06ea964 NC |
2970 | static bfd_boolean |
2971 | aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section, | |
2972 | bfd_vma offset, bfd_vma value) | |
2973 | { | |
2974 | reloc_howto_type *howto; | |
2975 | bfd_vma place; | |
2976 | ||
0aa13fee | 2977 | howto = elfNN_aarch64_howto_from_type (input_bfd, r_type); |
a06ea964 NC |
2978 | place = (input_section->output_section->vma + input_section->output_offset |
2979 | + offset); | |
caed7120 | 2980 | |
0aa13fee | 2981 | r_type = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
caed7120 YZ |
2982 | value = _bfd_aarch64_elf_resolve_relocation (r_type, place, value, 0, FALSE); |
2983 | return _bfd_aarch64_elf_put_addend (input_bfd, | |
2984 | input_section->contents + offset, r_type, | |
1d75a8e2 | 2985 | howto, value) == bfd_reloc_ok; |
a06ea964 NC |
2986 | } |
2987 | ||
cec5225b | 2988 | static enum elf_aarch64_stub_type |
a06ea964 NC |
2989 | aarch64_select_branch_stub (bfd_vma value, bfd_vma place) |
2990 | { | |
2991 | if (aarch64_valid_for_adrp_p (value, place)) | |
2992 | return aarch64_stub_adrp_branch; | |
2993 | return aarch64_stub_long_branch; | |
2994 | } | |
2995 | ||
2996 | /* Determine the type of stub needed, if any, for a call. */ | |
2997 | ||
cec5225b | 2998 | static enum elf_aarch64_stub_type |
9a228467 | 2999 | aarch64_type_of_stub (asection *input_sec, |
a06ea964 | 3000 | const Elf_Internal_Rela *rel, |
f678ded7 | 3001 | asection *sym_sec, |
a06ea964 | 3002 | unsigned char st_type, |
a06ea964 NC |
3003 | bfd_vma destination) |
3004 | { | |
3005 | bfd_vma location; | |
3006 | bfd_signed_vma branch_offset; | |
3007 | unsigned int r_type; | |
cec5225b | 3008 | enum elf_aarch64_stub_type stub_type = aarch64_stub_none; |
a06ea964 | 3009 | |
f678ded7 | 3010 | if (st_type != STT_FUNC |
2f340668 | 3011 | && (sym_sec == input_sec)) |
a06ea964 NC |
3012 | return stub_type; |
3013 | ||
a06ea964 NC |
3014 | /* Determine where the call point is. */ |
3015 | location = (input_sec->output_offset | |
3016 | + input_sec->output_section->vma + rel->r_offset); | |
3017 | ||
3018 | branch_offset = (bfd_signed_vma) (destination - location); | |
3019 | ||
cec5225b | 3020 | r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
3021 | |
3022 | /* We don't want to redirect any old unconditional jump in this way, | |
3023 | only one which is being used for a sibcall, where it is | |
3024 | acceptable for the IP0 and IP1 registers to be clobbered. */ | |
a6bb11b2 | 3025 | if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26)) |
a06ea964 NC |
3026 | && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET |
3027 | || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET)) | |
3028 | { | |
3029 | stub_type = aarch64_stub_long_branch; | |
3030 | } | |
3031 | ||
3032 | return stub_type; | |
3033 | } | |
3034 | ||
3035 | /* Build a name for an entry in the stub hash table. */ | |
3036 | ||
3037 | static char * | |
cec5225b | 3038 | elfNN_aarch64_stub_name (const asection *input_section, |
a06ea964 | 3039 | const asection *sym_sec, |
cec5225b | 3040 | const struct elf_aarch64_link_hash_entry *hash, |
a06ea964 NC |
3041 | const Elf_Internal_Rela *rel) |
3042 | { | |
3043 | char *stub_name; | |
3044 | bfd_size_type len; | |
3045 | ||
3046 | if (hash) | |
3047 | { | |
3048 | len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1; | |
3049 | stub_name = bfd_malloc (len); | |
3050 | if (stub_name != NULL) | |
3051 | snprintf (stub_name, len, "%08x_%s+%" BFD_VMA_FMT "x", | |
3052 | (unsigned int) input_section->id, | |
3053 | hash->root.root.root.string, | |
3054 | rel->r_addend); | |
3055 | } | |
3056 | else | |
3057 | { | |
3058 | len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1; | |
3059 | stub_name = bfd_malloc (len); | |
3060 | if (stub_name != NULL) | |
3061 | snprintf (stub_name, len, "%08x_%x:%x+%" BFD_VMA_FMT "x", | |
3062 | (unsigned int) input_section->id, | |
3063 | (unsigned int) sym_sec->id, | |
cec5225b | 3064 | (unsigned int) ELFNN_R_SYM (rel->r_info), |
a06ea964 NC |
3065 | rel->r_addend); |
3066 | } | |
3067 | ||
3068 | return stub_name; | |
3069 | } | |
3070 | ||
7f784814 JW |
3071 | /* Return TRUE if symbol H should be hashed in the `.gnu.hash' section. For |
3072 | executable PLT slots where the executable never takes the address of those | |
3073 | functions, the function symbols are not added to the hash table. */ | |
3074 | ||
3075 | static bfd_boolean | |
3076 | elf_aarch64_hash_symbol (struct elf_link_hash_entry *h) | |
3077 | { | |
3078 | if (h->plt.offset != (bfd_vma) -1 | |
3079 | && !h->def_regular | |
3080 | && !h->pointer_equality_needed) | |
3081 | return FALSE; | |
3082 | ||
3083 | return _bfd_elf_hash_symbol (h); | |
3084 | } | |
3085 | ||
3086 | ||
a06ea964 NC |
3087 | /* Look up an entry in the stub hash. Stub entries are cached because |
3088 | creating the stub name takes a bit of time. */ | |
3089 | ||
cec5225b YZ |
3090 | static struct elf_aarch64_stub_hash_entry * |
3091 | elfNN_aarch64_get_stub_entry (const asection *input_section, | |
a06ea964 NC |
3092 | const asection *sym_sec, |
3093 | struct elf_link_hash_entry *hash, | |
3094 | const Elf_Internal_Rela *rel, | |
cec5225b | 3095 | struct elf_aarch64_link_hash_table *htab) |
a06ea964 | 3096 | { |
cec5225b YZ |
3097 | struct elf_aarch64_stub_hash_entry *stub_entry; |
3098 | struct elf_aarch64_link_hash_entry *h = | |
3099 | (struct elf_aarch64_link_hash_entry *) hash; | |
a06ea964 NC |
3100 | const asection *id_sec; |
3101 | ||
3102 | if ((input_section->flags & SEC_CODE) == 0) | |
3103 | return NULL; | |
3104 | ||
3105 | /* If this input section is part of a group of sections sharing one | |
3106 | stub section, then use the id of the first section in the group. | |
3107 | Stub names need to include a section id, as there may well be | |
3108 | more than one stub used to reach say, printf, and we need to | |
3109 | distinguish between them. */ | |
3110 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3111 | ||
3112 | if (h != NULL && h->stub_cache != NULL | |
3113 | && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec) | |
3114 | { | |
3115 | stub_entry = h->stub_cache; | |
3116 | } | |
3117 | else | |
3118 | { | |
3119 | char *stub_name; | |
3120 | ||
cec5225b | 3121 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel); |
a06ea964 NC |
3122 | if (stub_name == NULL) |
3123 | return NULL; | |
3124 | ||
3125 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
3126 | stub_name, FALSE, FALSE); | |
3127 | if (h != NULL) | |
3128 | h->stub_cache = stub_entry; | |
3129 | ||
3130 | free (stub_name); | |
3131 | } | |
3132 | ||
3133 | return stub_entry; | |
3134 | } | |
3135 | ||
a06ea964 | 3136 | |
66585675 MS |
3137 | /* Create a stub section. */ |
3138 | ||
3139 | static asection * | |
3140 | _bfd_aarch64_create_stub_section (asection *section, | |
3141 | struct elf_aarch64_link_hash_table *htab) | |
3142 | { | |
3143 | size_t namelen; | |
3144 | bfd_size_type len; | |
3145 | char *s_name; | |
3146 | ||
3147 | namelen = strlen (section->name); | |
3148 | len = namelen + sizeof (STUB_SUFFIX); | |
3149 | s_name = bfd_alloc (htab->stub_bfd, len); | |
3150 | if (s_name == NULL) | |
3151 | return NULL; | |
3152 | ||
3153 | memcpy (s_name, section->name, namelen); | |
3154 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
3155 | return (*htab->add_stub_section) (s_name, section); | |
3156 | } | |
3157 | ||
3158 | ||
fc6d53be MS |
3159 | /* Find or create a stub section for a link section. |
3160 | ||
3161 | Fix or create the stub section used to collect stubs attached to | |
3162 | the specified link section. */ | |
3163 | ||
3164 | static asection * | |
3165 | _bfd_aarch64_get_stub_for_link_section (asection *link_section, | |
3166 | struct elf_aarch64_link_hash_table *htab) | |
3167 | { | |
3168 | if (htab->stub_group[link_section->id].stub_sec == NULL) | |
3169 | htab->stub_group[link_section->id].stub_sec | |
3170 | = _bfd_aarch64_create_stub_section (link_section, htab); | |
3171 | return htab->stub_group[link_section->id].stub_sec; | |
3172 | } | |
3173 | ||
3174 | ||
ef857521 MS |
3175 | /* Find or create a stub section in the stub group for an input |
3176 | section. */ | |
3177 | ||
3178 | static asection * | |
3179 | _bfd_aarch64_create_or_find_stub_sec (asection *section, | |
3180 | struct elf_aarch64_link_hash_table *htab) | |
a06ea964 | 3181 | { |
fc6d53be MS |
3182 | asection *link_sec = htab->stub_group[section->id].link_sec; |
3183 | return _bfd_aarch64_get_stub_for_link_section (link_sec, htab); | |
ef857521 MS |
3184 | } |
3185 | ||
3186 | ||
3187 | /* Add a new stub entry in the stub group associated with an input | |
3188 | section to the stub hash. Not all fields of the new stub entry are | |
3189 | initialised. */ | |
3190 | ||
3191 | static struct elf_aarch64_stub_hash_entry * | |
3192 | _bfd_aarch64_add_stub_entry_in_group (const char *stub_name, | |
3193 | asection *section, | |
3194 | struct elf_aarch64_link_hash_table *htab) | |
3195 | { | |
3196 | asection *link_sec; | |
3197 | asection *stub_sec; | |
3198 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
3199 | ||
3200 | link_sec = htab->stub_group[section->id].link_sec; | |
3201 | stub_sec = _bfd_aarch64_create_or_find_stub_sec (section, htab); | |
3202 | ||
a06ea964 NC |
3203 | /* Enter this entry into the linker stub hash table. */ |
3204 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
3205 | TRUE, FALSE); | |
3206 | if (stub_entry == NULL) | |
3207 | { | |
695344c0 | 3208 | /* xgettext:c-format */ |
871b3ab2 | 3209 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
4eca0228 | 3210 | section->owner, stub_name); |
a06ea964 NC |
3211 | return NULL; |
3212 | } | |
3213 | ||
3214 | stub_entry->stub_sec = stub_sec; | |
3215 | stub_entry->stub_offset = 0; | |
3216 | stub_entry->id_sec = link_sec; | |
3217 | ||
3218 | return stub_entry; | |
3219 | } | |
3220 | ||
4106101c MS |
3221 | /* Add a new stub entry in the final stub section to the stub hash. |
3222 | Not all fields of the new stub entry are initialised. */ | |
3223 | ||
3224 | static struct elf_aarch64_stub_hash_entry * | |
3225 | _bfd_aarch64_add_stub_entry_after (const char *stub_name, | |
3226 | asection *link_section, | |
3227 | struct elf_aarch64_link_hash_table *htab) | |
3228 | { | |
3229 | asection *stub_sec; | |
3230 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
3231 | ||
3232 | stub_sec = _bfd_aarch64_get_stub_for_link_section (link_section, htab); | |
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 | |
3377 | aarch64_size_one_stub (struct bfd_hash_entry *gen_entry, | |
3378 | void *in_arg ATTRIBUTE_UNUSED) | |
3379 | { | |
cec5225b | 3380 | struct elf_aarch64_stub_hash_entry *stub_entry; |
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; |
a06ea964 NC |
3385 | |
3386 | switch (stub_entry->stub_type) | |
3387 | { | |
3388 | case aarch64_stub_adrp_branch: | |
3389 | size = sizeof (aarch64_adrp_branch_stub); | |
3390 | break; | |
3391 | case aarch64_stub_long_branch: | |
3392 | size = sizeof (aarch64_long_branch_stub); | |
3393 | break; | |
68fcca92 JW |
3394 | case aarch64_stub_erratum_835769_veneer: |
3395 | size = sizeof (aarch64_erratum_835769_stub); | |
3396 | break; | |
4106101c MS |
3397 | case aarch64_stub_erratum_843419_veneer: |
3398 | size = sizeof (aarch64_erratum_843419_stub); | |
3399 | break; | |
a06ea964 | 3400 | default: |
8e2fe09f | 3401 | abort (); |
a06ea964 NC |
3402 | } |
3403 | ||
3404 | size = (size + 7) & ~7; | |
3405 | stub_entry->stub_sec->size += size; | |
3406 | return TRUE; | |
3407 | } | |
3408 | ||
3409 | /* External entry points for sizing and building linker stubs. */ | |
3410 | ||
3411 | /* Set up various things so that we can make a list of input sections | |
3412 | for each output section included in the link. Returns -1 on error, | |
3413 | 0 when no stubs will be needed, and 1 on success. */ | |
3414 | ||
3415 | int | |
cec5225b | 3416 | elfNN_aarch64_setup_section_lists (bfd *output_bfd, |
a06ea964 NC |
3417 | struct bfd_link_info *info) |
3418 | { | |
3419 | bfd *input_bfd; | |
3420 | unsigned int bfd_count; | |
7292b3ac | 3421 | unsigned int top_id, top_index; |
a06ea964 NC |
3422 | asection *section; |
3423 | asection **input_list, **list; | |
3424 | bfd_size_type amt; | |
cec5225b YZ |
3425 | struct elf_aarch64_link_hash_table *htab = |
3426 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
3427 | |
3428 | if (!is_elf_hash_table (htab)) | |
3429 | return 0; | |
3430 | ||
3431 | /* Count the number of input BFDs and find the top input section id. */ | |
3432 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
c72f2fb2 | 3433 | input_bfd != NULL; input_bfd = input_bfd->link.next) |
a06ea964 NC |
3434 | { |
3435 | bfd_count += 1; | |
3436 | for (section = input_bfd->sections; | |
3437 | section != NULL; section = section->next) | |
3438 | { | |
3439 | if (top_id < section->id) | |
3440 | top_id = section->id; | |
3441 | } | |
3442 | } | |
3443 | htab->bfd_count = bfd_count; | |
3444 | ||
3445 | amt = sizeof (struct map_stub) * (top_id + 1); | |
3446 | htab->stub_group = bfd_zmalloc (amt); | |
3447 | if (htab->stub_group == NULL) | |
3448 | return -1; | |
3449 | ||
3450 | /* We can't use output_bfd->section_count here to find the top output | |
3451 | section index as some sections may have been removed, and | |
3452 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
3453 | for (section = output_bfd->sections, top_index = 0; | |
3454 | section != NULL; section = section->next) | |
3455 | { | |
3456 | if (top_index < section->index) | |
3457 | top_index = section->index; | |
3458 | } | |
3459 | ||
3460 | htab->top_index = top_index; | |
3461 | amt = sizeof (asection *) * (top_index + 1); | |
3462 | input_list = bfd_malloc (amt); | |
3463 | htab->input_list = input_list; | |
3464 | if (input_list == NULL) | |
3465 | return -1; | |
3466 | ||
3467 | /* For sections we aren't interested in, mark their entries with a | |
3468 | value we can check later. */ | |
3469 | list = input_list + top_index; | |
3470 | do | |
3471 | *list = bfd_abs_section_ptr; | |
3472 | while (list-- != input_list); | |
3473 | ||
3474 | for (section = output_bfd->sections; | |
3475 | section != NULL; section = section->next) | |
3476 | { | |
3477 | if ((section->flags & SEC_CODE) != 0) | |
3478 | input_list[section->index] = NULL; | |
3479 | } | |
3480 | ||
3481 | return 1; | |
3482 | } | |
3483 | ||
cec5225b | 3484 | /* Used by elfNN_aarch64_next_input_section and group_sections. */ |
a06ea964 NC |
3485 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3486 | ||
3487 | /* The linker repeatedly calls this function for each input section, | |
3488 | in the order that input sections are linked into output sections. | |
3489 | Build lists of input sections to determine groupings between which | |
3490 | we may insert linker stubs. */ | |
3491 | ||
3492 | void | |
cec5225b | 3493 | elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec) |
a06ea964 | 3494 | { |
cec5225b YZ |
3495 | struct elf_aarch64_link_hash_table *htab = |
3496 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
3497 | |
3498 | if (isec->output_section->index <= htab->top_index) | |
3499 | { | |
3500 | asection **list = htab->input_list + isec->output_section->index; | |
3501 | ||
3502 | if (*list != bfd_abs_section_ptr) | |
3503 | { | |
3504 | /* Steal the link_sec pointer for our list. */ | |
3505 | /* This happens to make the list in reverse order, | |
3506 | which is what we want. */ | |
3507 | PREV_SEC (isec) = *list; | |
3508 | *list = isec; | |
3509 | } | |
3510 | } | |
3511 | } | |
3512 | ||
3513 | /* See whether we can group stub sections together. Grouping stub | |
3514 | sections may result in fewer stubs. More importantly, we need to | |
3515 | put all .init* and .fini* stubs at the beginning of the .init or | |
3516 | .fini output sections respectively, because glibc splits the | |
3517 | _init and _fini functions into multiple parts. Putting a stub in | |
3518 | the middle of a function is not a good idea. */ | |
3519 | ||
3520 | static void | |
cec5225b | 3521 | group_sections (struct elf_aarch64_link_hash_table *htab, |
a06ea964 NC |
3522 | bfd_size_type stub_group_size, |
3523 | bfd_boolean stubs_always_before_branch) | |
3524 | { | |
3525 | asection **list = htab->input_list + htab->top_index; | |
3526 | ||
3527 | do | |
3528 | { | |
3529 | asection *tail = *list; | |
3530 | ||
3531 | if (tail == bfd_abs_section_ptr) | |
3532 | continue; | |
3533 | ||
3534 | while (tail != NULL) | |
3535 | { | |
3536 | asection *curr; | |
3537 | asection *prev; | |
3538 | bfd_size_type total; | |
3539 | ||
3540 | curr = tail; | |
3541 | total = tail->size; | |
3542 | while ((prev = PREV_SEC (curr)) != NULL | |
3543 | && ((total += curr->output_offset - prev->output_offset) | |
3544 | < stub_group_size)) | |
3545 | curr = prev; | |
3546 | ||
3547 | /* OK, the size from the start of CURR to the end is less | |
3548 | than stub_group_size and thus can be handled by one stub | |
3549 | section. (Or the tail section is itself larger than | |
3550 | stub_group_size, in which case we may be toast.) | |
3551 | We should really be keeping track of the total size of | |
3552 | stubs added here, as stubs contribute to the final output | |
3553 | section size. */ | |
3554 | do | |
3555 | { | |
3556 | prev = PREV_SEC (tail); | |
3557 | /* Set up this stub group. */ | |
3558 | htab->stub_group[tail->id].link_sec = curr; | |
3559 | } | |
3560 | while (tail != curr && (tail = prev) != NULL); | |
3561 | ||
3562 | /* But wait, there's more! Input sections up to stub_group_size | |
3563 | bytes before the stub section can be handled by it too. */ | |
3564 | if (!stubs_always_before_branch) | |
3565 | { | |
3566 | total = 0; | |
3567 | while (prev != NULL | |
3568 | && ((total += tail->output_offset - prev->output_offset) | |
3569 | < stub_group_size)) | |
3570 | { | |
3571 | tail = prev; | |
3572 | prev = PREV_SEC (tail); | |
3573 | htab->stub_group[tail->id].link_sec = curr; | |
3574 | } | |
3575 | } | |
3576 | tail = prev; | |
3577 | } | |
3578 | } | |
3579 | while (list-- != htab->input_list); | |
3580 | ||
3581 | free (htab->input_list); | |
3582 | } | |
3583 | ||
3584 | #undef PREV_SEC | |
3585 | ||
68fcca92 JW |
3586 | #define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1)) |
3587 | ||
3588 | #define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5) | |
3589 | #define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5) | |
3590 | #define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5) | |
3591 | #define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5) | |
3592 | #define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5) | |
3593 | #define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5) | |
3594 | ||
3595 | #define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000) | |
3596 | #define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1) | |
3597 | #define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3) | |
3598 | #define AARCH64_ZR 0x1f | |
3599 | ||
3600 | /* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for | |
3601 | LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */ | |
3602 | ||
3603 | #define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1) | |
3604 | #define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000) | |
3605 | #define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000) | |
3606 | #define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000) | |
3607 | #define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000) | |
3608 | #define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000) | |
3609 | #define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000) | |
3610 | #define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000) | |
3611 | #define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000) | |
3612 | #define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400) | |
3613 | #define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800) | |
3614 | #define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00) | |
3615 | #define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800) | |
3616 | #define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000) | |
3617 | #define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000) | |
3618 | #define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000) | |
3619 | #define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000) | |
3620 | #define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000) | |
3621 | ||
3d14faea MS |
3622 | /* Classify an INSN if it is indeed a load/store. |
3623 | ||
3624 | Return TRUE if INSN is a LD/ST instruction otherwise return FALSE. | |
3625 | ||
3626 | For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2 | |
3627 | is set equal to RT. | |
3628 | ||
2d0ca824 | 3629 | For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. */ |
68fcca92 JW |
3630 | |
3631 | static bfd_boolean | |
3d14faea | 3632 | aarch64_mem_op_p (uint32_t insn, unsigned int *rt, unsigned int *rt2, |
68fcca92 JW |
3633 | bfd_boolean *pair, bfd_boolean *load) |
3634 | { | |
3635 | uint32_t opcode; | |
3636 | unsigned int r; | |
3637 | uint32_t opc = 0; | |
3638 | uint32_t v = 0; | |
3639 | uint32_t opc_v = 0; | |
3640 | ||
de194d85 | 3641 | /* Bail out quickly if INSN doesn't fall into the load-store |
68fcca92 JW |
3642 | encoding space. */ |
3643 | if (!AARCH64_LDST (insn)) | |
3644 | return FALSE; | |
3645 | ||
3646 | *pair = FALSE; | |
3647 | *load = FALSE; | |
3648 | if (AARCH64_LDST_EX (insn)) | |
3649 | { | |
3650 | *rt = AARCH64_RT (insn); | |
3d14faea | 3651 | *rt2 = *rt; |
68fcca92 | 3652 | if (AARCH64_BIT (insn, 21) == 1) |
07d6d2b8 | 3653 | { |
68fcca92 | 3654 | *pair = TRUE; |
3d14faea | 3655 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
3656 | } |
3657 | *load = AARCH64_LD (insn); | |
3658 | return TRUE; | |
3659 | } | |
3660 | else if (AARCH64_LDST_NAP (insn) | |
3661 | || AARCH64_LDSTP_PI (insn) | |
3662 | || AARCH64_LDSTP_O (insn) | |
3663 | || AARCH64_LDSTP_PRE (insn)) | |
3664 | { | |
3665 | *pair = TRUE; | |
3666 | *rt = AARCH64_RT (insn); | |
3d14faea | 3667 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
3668 | *load = AARCH64_LD (insn); |
3669 | return TRUE; | |
3670 | } | |
3671 | else if (AARCH64_LDST_PCREL (insn) | |
3672 | || AARCH64_LDST_UI (insn) | |
3673 | || AARCH64_LDST_PIIMM (insn) | |
3674 | || AARCH64_LDST_U (insn) | |
3675 | || AARCH64_LDST_PREIMM (insn) | |
3676 | || AARCH64_LDST_RO (insn) | |
3677 | || AARCH64_LDST_UIMM (insn)) | |
3678 | { | |
3679 | *rt = AARCH64_RT (insn); | |
3d14faea | 3680 | *rt2 = *rt; |
68fcca92 JW |
3681 | if (AARCH64_LDST_PCREL (insn)) |
3682 | *load = TRUE; | |
3683 | opc = AARCH64_BITS (insn, 22, 2); | |
3684 | v = AARCH64_BIT (insn, 26); | |
3685 | opc_v = opc | (v << 2); | |
3686 | *load = (opc_v == 1 || opc_v == 2 || opc_v == 3 | |
3687 | || opc_v == 5 || opc_v == 7); | |
3688 | return TRUE; | |
3689 | } | |
3690 | else if (AARCH64_LDST_SIMD_M (insn) | |
3691 | || AARCH64_LDST_SIMD_M_PI (insn)) | |
3692 | { | |
3693 | *rt = AARCH64_RT (insn); | |
3694 | *load = AARCH64_BIT (insn, 22); | |
3695 | opcode = (insn >> 12) & 0xf; | |
3696 | switch (opcode) | |
3697 | { | |
3698 | case 0: | |
3699 | case 2: | |
3d14faea | 3700 | *rt2 = *rt + 3; |
68fcca92 JW |
3701 | break; |
3702 | ||
3703 | case 4: | |
3704 | case 6: | |
3d14faea | 3705 | *rt2 = *rt + 2; |
68fcca92 JW |
3706 | break; |
3707 | ||
3708 | case 7: | |
3d14faea | 3709 | *rt2 = *rt; |
68fcca92 JW |
3710 | break; |
3711 | ||
3712 | case 8: | |
3713 | case 10: | |
3d14faea | 3714 | *rt2 = *rt + 1; |
68fcca92 JW |
3715 | break; |
3716 | ||
3717 | default: | |
3718 | return FALSE; | |
3719 | } | |
3720 | return TRUE; | |
3721 | } | |
3722 | else if (AARCH64_LDST_SIMD_S (insn) | |
3723 | || AARCH64_LDST_SIMD_S_PI (insn)) | |
3724 | { | |
3725 | *rt = AARCH64_RT (insn); | |
3726 | r = (insn >> 21) & 1; | |
3727 | *load = AARCH64_BIT (insn, 22); | |
3728 | opcode = (insn >> 13) & 0x7; | |
3729 | switch (opcode) | |
3730 | { | |
3731 | case 0: | |
3732 | case 2: | |
3733 | case 4: | |
3d14faea | 3734 | *rt2 = *rt + r; |
68fcca92 JW |
3735 | break; |
3736 | ||
3737 | case 1: | |
3738 | case 3: | |
3739 | case 5: | |
3d14faea | 3740 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
3741 | break; |
3742 | ||
3743 | case 6: | |
3d14faea | 3744 | *rt2 = *rt + r; |
68fcca92 JW |
3745 | break; |
3746 | ||
3747 | case 7: | |
3d14faea | 3748 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
3749 | break; |
3750 | ||
3751 | default: | |
3752 | return FALSE; | |
3753 | } | |
3754 | return TRUE; | |
3755 | } | |
3756 | ||
3757 | return FALSE; | |
3758 | } | |
3759 | ||
3760 | /* Return TRUE if INSN is multiply-accumulate. */ | |
3761 | ||
3762 | static bfd_boolean | |
3763 | aarch64_mlxl_p (uint32_t insn) | |
3764 | { | |
3765 | uint32_t op31 = AARCH64_OP31 (insn); | |
3766 | ||
3767 | if (AARCH64_MAC (insn) | |
3768 | && (op31 == 0 || op31 == 1 || op31 == 5) | |
3769 | /* Exclude MUL instructions which are encoded as a multiple accumulate | |
3770 | with RA = XZR. */ | |
3771 | && AARCH64_RA (insn) != AARCH64_ZR) | |
3772 | return TRUE; | |
3773 | ||
3774 | return FALSE; | |
3775 | } | |
3776 | ||
3777 | /* Some early revisions of the Cortex-A53 have an erratum (835769) whereby | |
3778 | it is possible for a 64-bit multiply-accumulate instruction to generate an | |
3779 | incorrect result. The details are quite complex and hard to | |
3780 | determine statically, since branches in the code may exist in some | |
3781 | circumstances, but all cases end with a memory (load, store, or | |
3782 | prefetch) instruction followed immediately by the multiply-accumulate | |
3783 | operation. We employ a linker patching technique, by moving the potentially | |
3784 | affected multiply-accumulate instruction into a patch region and replacing | |
3785 | the original instruction with a branch to the patch. This function checks | |
3786 | if INSN_1 is the memory operation followed by a multiply-accumulate | |
3787 | operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE | |
3788 | if INSN_1 and INSN_2 are safe. */ | |
3789 | ||
3790 | static bfd_boolean | |
3791 | aarch64_erratum_sequence (uint32_t insn_1, uint32_t insn_2) | |
3792 | { | |
3793 | uint32_t rt; | |
3d14faea | 3794 | uint32_t rt2; |
68fcca92 JW |
3795 | uint32_t rn; |
3796 | uint32_t rm; | |
3797 | uint32_t ra; | |
3798 | bfd_boolean pair; | |
3799 | bfd_boolean load; | |
3800 | ||
3801 | if (aarch64_mlxl_p (insn_2) | |
3d14faea | 3802 | && aarch64_mem_op_p (insn_1, &rt, &rt2, &pair, &load)) |
68fcca92 JW |
3803 | { |
3804 | /* Any SIMD memory op is independent of the subsequent MLA | |
3805 | by definition of the erratum. */ | |
3806 | if (AARCH64_BIT (insn_1, 26)) | |
3807 | return TRUE; | |
3808 | ||
3809 | /* If not SIMD, check for integer memory ops and MLA relationship. */ | |
3810 | rn = AARCH64_RN (insn_2); | |
3811 | ra = AARCH64_RA (insn_2); | |
3812 | rm = AARCH64_RM (insn_2); | |
3813 | ||
3814 | /* If this is a load and there's a true(RAW) dependency, we are safe | |
3815 | and this is not an erratum sequence. */ | |
3816 | if (load && | |
3817 | (rt == rn || rt == rm || rt == ra | |
3d14faea | 3818 | || (pair && (rt2 == rn || rt2 == rm || rt2 == ra)))) |
68fcca92 JW |
3819 | return FALSE; |
3820 | ||
3821 | /* We conservatively put out stubs for all other cases (including | |
3822 | writebacks). */ | |
3823 | return TRUE; | |
3824 | } | |
3825 | ||
3826 | return FALSE; | |
3827 | } | |
3828 | ||
520c7b56 JW |
3829 | /* Used to order a list of mapping symbols by address. */ |
3830 | ||
3831 | static int | |
3832 | elf_aarch64_compare_mapping (const void *a, const void *b) | |
3833 | { | |
3834 | const elf_aarch64_section_map *amap = (const elf_aarch64_section_map *) a; | |
3835 | const elf_aarch64_section_map *bmap = (const elf_aarch64_section_map *) b; | |
3836 | ||
3837 | if (amap->vma > bmap->vma) | |
3838 | return 1; | |
3839 | else if (amap->vma < bmap->vma) | |
3840 | return -1; | |
3841 | else if (amap->type > bmap->type) | |
3842 | /* Ensure results do not depend on the host qsort for objects with | |
3843 | multiple mapping symbols at the same address by sorting on type | |
3844 | after vma. */ | |
3845 | return 1; | |
3846 | else if (amap->type < bmap->type) | |
3847 | return -1; | |
3848 | else | |
3849 | return 0; | |
3850 | } | |
3851 | ||
2144188d | 3852 | |
35fee8b7 MS |
3853 | static char * |
3854 | _bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes) | |
3855 | { | |
3856 | char *stub_name = (char *) bfd_malloc | |
3857 | (strlen ("__erratum_835769_veneer_") + 16); | |
bb69498c NC |
3858 | if (stub_name != NULL) |
3859 | sprintf (stub_name,"__erratum_835769_veneer_%d", num_fixes); | |
35fee8b7 MS |
3860 | return stub_name; |
3861 | } | |
3862 | ||
4106101c | 3863 | /* Scan for Cortex-A53 erratum 835769 sequence. |
2144188d MS |
3864 | |
3865 | Return TRUE else FALSE on abnormal termination. */ | |
3866 | ||
68fcca92 | 3867 | static bfd_boolean |
5421cc6e MS |
3868 | _bfd_aarch64_erratum_835769_scan (bfd *input_bfd, |
3869 | struct bfd_link_info *info, | |
3870 | unsigned int *num_fixes_p) | |
68fcca92 JW |
3871 | { |
3872 | asection *section; | |
3873 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
68fcca92 | 3874 | unsigned int num_fixes = *num_fixes_p; |
68fcca92 JW |
3875 | |
3876 | if (htab == NULL) | |
2144188d | 3877 | return TRUE; |
68fcca92 JW |
3878 | |
3879 | for (section = input_bfd->sections; | |
3880 | section != NULL; | |
3881 | section = section->next) | |
3882 | { | |
3883 | bfd_byte *contents = NULL; | |
3884 | struct _aarch64_elf_section_data *sec_data; | |
3885 | unsigned int span; | |
3886 | ||
3887 | if (elf_section_type (section) != SHT_PROGBITS | |
3888 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
3889 | || (section->flags & SEC_EXCLUDE) != 0 | |
3890 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
3891 | || (section->output_section == bfd_abs_section_ptr)) | |
3892 | continue; | |
3893 | ||
3894 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
3895 | contents = elf_section_data (section)->this_hdr.contents; | |
3896 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
2144188d | 3897 | return FALSE; |
68fcca92 JW |
3898 | |
3899 | sec_data = elf_aarch64_section_data (section); | |
520c7b56 JW |
3900 | |
3901 | qsort (sec_data->map, sec_data->mapcount, | |
3902 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
3903 | ||
68fcca92 JW |
3904 | for (span = 0; span < sec_data->mapcount; span++) |
3905 | { | |
3906 | unsigned int span_start = sec_data->map[span].vma; | |
3907 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
3908 | ? sec_data->map[0].vma + section->size | |
3909 | : sec_data->map[span + 1].vma); | |
3910 | unsigned int i; | |
3911 | char span_type = sec_data->map[span].type; | |
3912 | ||
3913 | if (span_type == 'd') | |
3914 | continue; | |
3915 | ||
3916 | for (i = span_start; i + 4 < span_end; i += 4) | |
3917 | { | |
3918 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
3919 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
3920 | ||
3921 | if (aarch64_erratum_sequence (insn_1, insn_2)) | |
3922 | { | |
5421cc6e | 3923 | struct elf_aarch64_stub_hash_entry *stub_entry; |
35fee8b7 MS |
3924 | char *stub_name = _bfd_aarch64_erratum_835769_stub_name (num_fixes); |
3925 | if (! stub_name) | |
2144188d | 3926 | return FALSE; |
68fcca92 | 3927 | |
5421cc6e MS |
3928 | stub_entry = _bfd_aarch64_add_stub_entry_in_group (stub_name, |
3929 | section, | |
3930 | htab); | |
3931 | if (! stub_entry) | |
3932 | return FALSE; | |
68fcca92 | 3933 | |
5421cc6e MS |
3934 | stub_entry->stub_type = aarch64_stub_erratum_835769_veneer; |
3935 | stub_entry->target_section = section; | |
3936 | stub_entry->target_value = i + 4; | |
3937 | stub_entry->veneered_insn = insn_2; | |
3938 | stub_entry->output_name = stub_name; | |
68fcca92 JW |
3939 | num_fixes++; |
3940 | } | |
3941 | } | |
3942 | } | |
3943 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
3944 | free (contents); | |
3945 | } | |
3946 | ||
357d1523 MS |
3947 | *num_fixes_p = num_fixes; |
3948 | ||
2144188d | 3949 | return TRUE; |
68fcca92 JW |
3950 | } |
3951 | ||
13f622ec | 3952 | |
4106101c MS |
3953 | /* Test if instruction INSN is ADRP. */ |
3954 | ||
3955 | static bfd_boolean | |
3956 | _bfd_aarch64_adrp_p (uint32_t insn) | |
3957 | { | |
9fca35fc | 3958 | return ((insn & AARCH64_ADRP_OP_MASK) == AARCH64_ADRP_OP); |
4106101c MS |
3959 | } |
3960 | ||
3961 | ||
3962 | /* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */ | |
3963 | ||
3964 | static bfd_boolean | |
3965 | _bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1, uint32_t insn_2, | |
3966 | uint32_t insn_3) | |
3967 | { | |
3968 | uint32_t rt; | |
3969 | uint32_t rt2; | |
3970 | bfd_boolean pair; | |
3971 | bfd_boolean load; | |
3972 | ||
3973 | return (aarch64_mem_op_p (insn_2, &rt, &rt2, &pair, &load) | |
3974 | && (!pair | |
3975 | || (pair && !load)) | |
3976 | && AARCH64_LDST_UIMM (insn_3) | |
3977 | && AARCH64_RN (insn_3) == AARCH64_RD (insn_1)); | |
3978 | } | |
3979 | ||
3980 | ||
3981 | /* Test for the presence of Cortex-A53 erratum 843419 instruction sequence. | |
3982 | ||
3983 | Return TRUE if section CONTENTS at offset I contains one of the | |
3984 | erratum 843419 sequences, otherwise return FALSE. If a sequence is | |
3985 | seen set P_VENEER_I to the offset of the final LOAD/STORE | |
3986 | instruction in the sequence. | |
3987 | */ | |
3988 | ||
3989 | static bfd_boolean | |
3990 | _bfd_aarch64_erratum_843419_p (bfd_byte *contents, bfd_vma vma, | |
3991 | bfd_vma i, bfd_vma span_end, | |
3992 | bfd_vma *p_veneer_i) | |
3993 | { | |
3994 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
3995 | ||
3996 | if (!_bfd_aarch64_adrp_p (insn_1)) | |
3997 | return FALSE; | |
3998 | ||
3999 | if (span_end < i + 12) | |
4000 | return FALSE; | |
4001 | ||
4002 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
4003 | uint32_t insn_3 = bfd_getl32 (contents + i + 8); | |
4004 | ||
4005 | if ((vma & 0xfff) != 0xff8 && (vma & 0xfff) != 0xffc) | |
4006 | return FALSE; | |
4007 | ||
4008 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_3)) | |
4009 | { | |
4010 | *p_veneer_i = i + 8; | |
4011 | return TRUE; | |
4012 | } | |
4013 | ||
4014 | if (span_end < i + 16) | |
4015 | return FALSE; | |
4016 | ||
4017 | uint32_t insn_4 = bfd_getl32 (contents + i + 12); | |
4018 | ||
4019 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_4)) | |
4020 | { | |
4021 | *p_veneer_i = i + 12; | |
4022 | return TRUE; | |
4023 | } | |
4024 | ||
4025 | return FALSE; | |
4026 | } | |
4027 | ||
4028 | ||
13f622ec MS |
4029 | /* Resize all stub sections. */ |
4030 | ||
4031 | static void | |
4032 | _bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table *htab) | |
4033 | { | |
4034 | asection *section; | |
4035 | ||
4036 | /* OK, we've added some stubs. Find out the new size of the | |
4037 | stub sections. */ | |
4038 | for (section = htab->stub_bfd->sections; | |
4039 | section != NULL; section = section->next) | |
4040 | { | |
4041 | /* Ignore non-stub sections. */ | |
4042 | if (!strstr (section->name, STUB_SUFFIX)) | |
4043 | continue; | |
4044 | section->size = 0; | |
4045 | } | |
4046 | ||
4047 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab); | |
13f622ec | 4048 | |
61865519 MS |
4049 | for (section = htab->stub_bfd->sections; |
4050 | section != NULL; section = section->next) | |
4051 | { | |
4052 | if (!strstr (section->name, STUB_SUFFIX)) | |
4053 | continue; | |
4054 | ||
9a2ebffd JW |
4055 | /* Add space for a branch. Add 8 bytes to keep section 8 byte aligned, |
4056 | as long branch stubs contain a 64-bit address. */ | |
61865519 | 4057 | if (section->size) |
9a2ebffd | 4058 | section->size += 8; |
4106101c MS |
4059 | |
4060 | /* Ensure all stub sections have a size which is a multiple of | |
4061 | 4096. This is important in order to ensure that the insertion | |
4062 | of stub sections does not in itself move existing code around | |
4063 | in such a way that new errata sequences are created. */ | |
4064 | if (htab->fix_erratum_843419) | |
4065 | if (section->size) | |
4066 | section->size = BFD_ALIGN (section->size, 0x1000); | |
4067 | } | |
4068 | } | |
4069 | ||
9a2ebffd | 4070 | /* Construct an erratum 843419 workaround stub name. */ |
4106101c MS |
4071 | |
4072 | static char * | |
4073 | _bfd_aarch64_erratum_843419_stub_name (asection *input_section, | |
4074 | bfd_vma offset) | |
4075 | { | |
4076 | const bfd_size_type len = 8 + 4 + 1 + 8 + 1 + 16 + 1; | |
4077 | char *stub_name = bfd_malloc (len); | |
4078 | ||
4079 | if (stub_name != NULL) | |
4080 | snprintf (stub_name, len, "e843419@%04x_%08x_%" BFD_VMA_FMT "x", | |
4081 | input_section->owner->id, | |
4082 | input_section->id, | |
4083 | offset); | |
4084 | return stub_name; | |
4085 | } | |
4086 | ||
4087 | /* Build a stub_entry structure describing an 843419 fixup. | |
4088 | ||
4089 | The stub_entry constructed is populated with the bit pattern INSN | |
4090 | of the instruction located at OFFSET within input SECTION. | |
4091 | ||
4092 | Returns TRUE on success. */ | |
4093 | ||
4094 | static bfd_boolean | |
4095 | _bfd_aarch64_erratum_843419_fixup (uint32_t insn, | |
4096 | bfd_vma adrp_offset, | |
4097 | bfd_vma ldst_offset, | |
4098 | asection *section, | |
4099 | struct bfd_link_info *info) | |
4100 | { | |
4101 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
4102 | char *stub_name; | |
4103 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
4104 | ||
4105 | stub_name = _bfd_aarch64_erratum_843419_stub_name (section, ldst_offset); | |
bb69498c NC |
4106 | if (stub_name == NULL) |
4107 | return FALSE; | |
4106101c MS |
4108 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, |
4109 | FALSE, FALSE); | |
4110 | if (stub_entry) | |
4111 | { | |
4112 | free (stub_name); | |
4113 | return TRUE; | |
4114 | } | |
4115 | ||
4116 | /* We always place an 843419 workaround veneer in the stub section | |
4117 | attached to the input section in which an erratum sequence has | |
4118 | been found. This ensures that later in the link process (in | |
4119 | elfNN_aarch64_write_section) when we copy the veneered | |
4120 | instruction from the input section into the stub section the | |
4121 | copied instruction will have had any relocations applied to it. | |
4122 | If we placed workaround veneers in any other stub section then we | |
4123 | could not assume that all relocations have been processed on the | |
4124 | corresponding input section at the point we output the stub | |
bb69498c | 4125 | section. */ |
4106101c MS |
4126 | |
4127 | stub_entry = _bfd_aarch64_add_stub_entry_after (stub_name, section, htab); | |
4128 | if (stub_entry == NULL) | |
4129 | { | |
4130 | free (stub_name); | |
4131 | return FALSE; | |
4132 | } | |
4133 | ||
4134 | stub_entry->adrp_offset = adrp_offset; | |
4135 | stub_entry->target_value = ldst_offset; | |
4136 | stub_entry->target_section = section; | |
4137 | stub_entry->stub_type = aarch64_stub_erratum_843419_veneer; | |
4138 | stub_entry->veneered_insn = insn; | |
4139 | stub_entry->output_name = stub_name; | |
4140 | ||
4141 | return TRUE; | |
4142 | } | |
4143 | ||
4144 | ||
4145 | /* Scan an input section looking for the signature of erratum 843419. | |
4146 | ||
4147 | Scans input SECTION in INPUT_BFD looking for erratum 843419 | |
4148 | signatures, for each signature found a stub_entry is created | |
4149 | describing the location of the erratum for subsequent fixup. | |
4150 | ||
4151 | Return TRUE on successful scan, FALSE on failure to scan. | |
4152 | */ | |
4153 | ||
4154 | static bfd_boolean | |
4155 | _bfd_aarch64_erratum_843419_scan (bfd *input_bfd, asection *section, | |
4156 | struct bfd_link_info *info) | |
4157 | { | |
4158 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
4159 | ||
4160 | if (htab == NULL) | |
4161 | return TRUE; | |
4162 | ||
4163 | if (elf_section_type (section) != SHT_PROGBITS | |
4164 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
4165 | || (section->flags & SEC_EXCLUDE) != 0 | |
4166 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
4167 | || (section->output_section == bfd_abs_section_ptr)) | |
4168 | return TRUE; | |
4169 | ||
4170 | do | |
4171 | { | |
4172 | bfd_byte *contents = NULL; | |
4173 | struct _aarch64_elf_section_data *sec_data; | |
4174 | unsigned int span; | |
4175 | ||
4176 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
4177 | contents = elf_section_data (section)->this_hdr.contents; | |
4178 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
4179 | return FALSE; | |
4180 | ||
4181 | sec_data = elf_aarch64_section_data (section); | |
4182 | ||
4183 | qsort (sec_data->map, sec_data->mapcount, | |
4184 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
4185 | ||
4186 | for (span = 0; span < sec_data->mapcount; span++) | |
4187 | { | |
4188 | unsigned int span_start = sec_data->map[span].vma; | |
4189 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
4190 | ? sec_data->map[0].vma + section->size | |
4191 | : sec_data->map[span + 1].vma); | |
4192 | unsigned int i; | |
4193 | char span_type = sec_data->map[span].type; | |
4194 | ||
4195 | if (span_type == 'd') | |
4196 | continue; | |
4197 | ||
4198 | for (i = span_start; i + 8 < span_end; i += 4) | |
4199 | { | |
4200 | bfd_vma vma = (section->output_section->vma | |
4201 | + section->output_offset | |
4202 | + i); | |
4203 | bfd_vma veneer_i; | |
4204 | ||
4205 | if (_bfd_aarch64_erratum_843419_p | |
4206 | (contents, vma, i, span_end, &veneer_i)) | |
4207 | { | |
4208 | uint32_t insn = bfd_getl32 (contents + veneer_i); | |
4209 | ||
4210 | if (!_bfd_aarch64_erratum_843419_fixup (insn, i, veneer_i, | |
4211 | section, info)) | |
4212 | return FALSE; | |
4213 | } | |
4214 | } | |
4215 | } | |
4216 | ||
4217 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
4218 | free (contents); | |
61865519 | 4219 | } |
4106101c MS |
4220 | while (0); |
4221 | ||
4222 | return TRUE; | |
61865519 | 4223 | } |
13f622ec | 4224 | |
4106101c | 4225 | |
a06ea964 NC |
4226 | /* Determine and set the size of the stub section for a final link. |
4227 | ||
4228 | The basic idea here is to examine all the relocations looking for | |
4229 | PC-relative calls to a target that is unreachable with a "bl" | |
4230 | instruction. */ | |
4231 | ||
4232 | bfd_boolean | |
cec5225b | 4233 | elfNN_aarch64_size_stubs (bfd *output_bfd, |
a06ea964 NC |
4234 | bfd *stub_bfd, |
4235 | struct bfd_link_info *info, | |
4236 | bfd_signed_vma group_size, | |
4237 | asection * (*add_stub_section) (const char *, | |
4238 | asection *), | |
4239 | void (*layout_sections_again) (void)) | |
4240 | { | |
4241 | bfd_size_type stub_group_size; | |
4242 | bfd_boolean stubs_always_before_branch; | |
5421cc6e | 4243 | bfd_boolean stub_changed = FALSE; |
cec5225b | 4244 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); |
68fcca92 | 4245 | unsigned int num_erratum_835769_fixes = 0; |
a06ea964 NC |
4246 | |
4247 | /* Propagate mach to stub bfd, because it may not have been | |
4248 | finalized when we created stub_bfd. */ | |
4249 | bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd), | |
4250 | bfd_get_mach (output_bfd)); | |
4251 | ||
4252 | /* Stash our params away. */ | |
4253 | htab->stub_bfd = stub_bfd; | |
4254 | htab->add_stub_section = add_stub_section; | |
4255 | htab->layout_sections_again = layout_sections_again; | |
4256 | stubs_always_before_branch = group_size < 0; | |
4257 | if (group_size < 0) | |
4258 | stub_group_size = -group_size; | |
4259 | else | |
4260 | stub_group_size = group_size; | |
4261 | ||
4262 | if (stub_group_size == 1) | |
4263 | { | |
4264 | /* Default values. */ | |
b9eead84 | 4265 | /* AArch64 branch range is +-128MB. The value used is 1MB less. */ |
a06ea964 NC |
4266 | stub_group_size = 127 * 1024 * 1024; |
4267 | } | |
4268 | ||
4269 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
4270 | ||
4106101c MS |
4271 | (*htab->layout_sections_again) (); |
4272 | ||
5421cc6e MS |
4273 | if (htab->fix_erratum_835769) |
4274 | { | |
4275 | bfd *input_bfd; | |
4276 | ||
4277 | for (input_bfd = info->input_bfds; | |
4278 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
4279 | if (!_bfd_aarch64_erratum_835769_scan (input_bfd, info, | |
4280 | &num_erratum_835769_fixes)) | |
4281 | return FALSE; | |
4282 | ||
4106101c MS |
4283 | _bfd_aarch64_resize_stubs (htab); |
4284 | (*htab->layout_sections_again) (); | |
4285 | } | |
4286 | ||
4287 | if (htab->fix_erratum_843419) | |
4288 | { | |
4289 | bfd *input_bfd; | |
4290 | ||
4291 | for (input_bfd = info->input_bfds; | |
4292 | input_bfd != NULL; | |
4293 | input_bfd = input_bfd->link.next) | |
4294 | { | |
4295 | asection *section; | |
4296 | ||
4297 | for (section = input_bfd->sections; | |
4298 | section != NULL; | |
4299 | section = section->next) | |
4300 | if (!_bfd_aarch64_erratum_843419_scan (input_bfd, section, info)) | |
4301 | return FALSE; | |
4302 | } | |
4303 | ||
4304 | _bfd_aarch64_resize_stubs (htab); | |
4305 | (*htab->layout_sections_again) (); | |
5421cc6e MS |
4306 | } |
4307 | ||
a06ea964 NC |
4308 | while (1) |
4309 | { | |
4310 | bfd *input_bfd; | |
a06ea964 | 4311 | |
9b9971aa MS |
4312 | for (input_bfd = info->input_bfds; |
4313 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
a06ea964 NC |
4314 | { |
4315 | Elf_Internal_Shdr *symtab_hdr; | |
4316 | asection *section; | |
4317 | Elf_Internal_Sym *local_syms = NULL; | |
4318 | ||
4319 | /* We'll need the symbol table in a second. */ | |
4320 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
4321 | if (symtab_hdr->sh_info == 0) | |
4322 | continue; | |
4323 | ||
4324 | /* Walk over each section attached to the input bfd. */ | |
4325 | for (section = input_bfd->sections; | |
4326 | section != NULL; section = section->next) | |
4327 | { | |
4328 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
4329 | ||
4330 | /* If there aren't any relocs, then there's nothing more | |
4331 | to do. */ | |
4332 | if ((section->flags & SEC_RELOC) == 0 | |
4333 | || section->reloc_count == 0 | |
4334 | || (section->flags & SEC_CODE) == 0) | |
4335 | continue; | |
4336 | ||
4337 | /* If this section is a link-once section that will be | |
4338 | discarded, then don't create any stubs. */ | |
4339 | if (section->output_section == NULL | |
4340 | || section->output_section->owner != output_bfd) | |
4341 | continue; | |
4342 | ||
4343 | /* Get the relocs. */ | |
4344 | internal_relocs | |
4345 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, | |
4346 | NULL, info->keep_memory); | |
4347 | if (internal_relocs == NULL) | |
4348 | goto error_ret_free_local; | |
4349 | ||
4350 | /* Now examine each relocation. */ | |
4351 | irela = internal_relocs; | |
4352 | irelaend = irela + section->reloc_count; | |
4353 | for (; irela < irelaend; irela++) | |
4354 | { | |
4355 | unsigned int r_type, r_indx; | |
cec5225b YZ |
4356 | enum elf_aarch64_stub_type stub_type; |
4357 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
a06ea964 NC |
4358 | asection *sym_sec; |
4359 | bfd_vma sym_value; | |
4360 | bfd_vma destination; | |
cec5225b | 4361 | struct elf_aarch64_link_hash_entry *hash; |
a06ea964 NC |
4362 | const char *sym_name; |
4363 | char *stub_name; | |
4364 | const asection *id_sec; | |
4365 | unsigned char st_type; | |
4366 | bfd_size_type len; | |
4367 | ||
cec5225b YZ |
4368 | r_type = ELFNN_R_TYPE (irela->r_info); |
4369 | r_indx = ELFNN_R_SYM (irela->r_info); | |
a06ea964 NC |
4370 | |
4371 | if (r_type >= (unsigned int) R_AARCH64_end) | |
4372 | { | |
4373 | bfd_set_error (bfd_error_bad_value); | |
4374 | error_ret_free_internal: | |
4375 | if (elf_section_data (section)->relocs == NULL) | |
4376 | free (internal_relocs); | |
4377 | goto error_ret_free_local; | |
4378 | } | |
4379 | ||
4380 | /* Only look for stubs on unconditional branch and | |
4381 | branch and link instructions. */ | |
a6bb11b2 YZ |
4382 | if (r_type != (unsigned int) AARCH64_R (CALL26) |
4383 | && r_type != (unsigned int) AARCH64_R (JUMP26)) | |
a06ea964 NC |
4384 | continue; |
4385 | ||
4386 | /* Now determine the call target, its name, value, | |
4387 | section. */ | |
4388 | sym_sec = NULL; | |
4389 | sym_value = 0; | |
4390 | destination = 0; | |
4391 | hash = NULL; | |
4392 | sym_name = NULL; | |
4393 | if (r_indx < symtab_hdr->sh_info) | |
4394 | { | |
4395 | /* It's a local symbol. */ | |
4396 | Elf_Internal_Sym *sym; | |
4397 | Elf_Internal_Shdr *hdr; | |
4398 | ||
4399 | if (local_syms == NULL) | |
4400 | { | |
4401 | local_syms | |
4402 | = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4403 | if (local_syms == NULL) | |
4404 | local_syms | |
4405 | = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
4406 | symtab_hdr->sh_info, 0, | |
4407 | NULL, NULL, NULL); | |
4408 | if (local_syms == NULL) | |
4409 | goto error_ret_free_internal; | |
4410 | } | |
4411 | ||
4412 | sym = local_syms + r_indx; | |
4413 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
4414 | sym_sec = hdr->bfd_section; | |
4415 | if (!sym_sec) | |
4416 | /* This is an undefined symbol. It can never | |
4417 | be resolved. */ | |
4418 | continue; | |
4419 | ||
4420 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
4421 | sym_value = sym->st_value; | |
4422 | destination = (sym_value + irela->r_addend | |
4423 | + sym_sec->output_offset | |
4424 | + sym_sec->output_section->vma); | |
4425 | st_type = ELF_ST_TYPE (sym->st_info); | |
4426 | sym_name | |
4427 | = bfd_elf_string_from_elf_section (input_bfd, | |
4428 | symtab_hdr->sh_link, | |
4429 | sym->st_name); | |
4430 | } | |
4431 | else | |
4432 | { | |
4433 | int e_indx; | |
4434 | ||
4435 | e_indx = r_indx - symtab_hdr->sh_info; | |
cec5225b | 4436 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
4437 | elf_sym_hashes (input_bfd)[e_indx]); |
4438 | ||
4439 | while (hash->root.root.type == bfd_link_hash_indirect | |
4440 | || hash->root.root.type == bfd_link_hash_warning) | |
cec5225b | 4441 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
4442 | hash->root.root.u.i.link); |
4443 | ||
4444 | if (hash->root.root.type == bfd_link_hash_defined | |
4445 | || hash->root.root.type == bfd_link_hash_defweak) | |
4446 | { | |
cec5225b YZ |
4447 | struct elf_aarch64_link_hash_table *globals = |
4448 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
4449 | sym_sec = hash->root.root.u.def.section; |
4450 | sym_value = hash->root.root.u.def.value; | |
4451 | /* For a destination in a shared library, | |
4452 | use the PLT stub as target address to | |
4453 | decide whether a branch stub is | |
4454 | needed. */ | |
4455 | if (globals->root.splt != NULL && hash != NULL | |
4456 | && hash->root.plt.offset != (bfd_vma) - 1) | |
4457 | { | |
4458 | sym_sec = globals->root.splt; | |
4459 | sym_value = hash->root.plt.offset; | |
4460 | if (sym_sec->output_section != NULL) | |
4461 | destination = (sym_value | |
4462 | + sym_sec->output_offset | |
4463 | + | |
4464 | sym_sec->output_section->vma); | |
4465 | } | |
4466 | else if (sym_sec->output_section != NULL) | |
4467 | destination = (sym_value + irela->r_addend | |
4468 | + sym_sec->output_offset | |
4469 | + sym_sec->output_section->vma); | |
4470 | } | |
4471 | else if (hash->root.root.type == bfd_link_hash_undefined | |
4472 | || (hash->root.root.type | |
4473 | == bfd_link_hash_undefweak)) | |
4474 | { | |
4475 | /* For a shared library, use the PLT stub as | |
4476 | target address to decide whether a long | |
4477 | branch stub is needed. | |
4478 | For absolute code, they cannot be handled. */ | |
cec5225b YZ |
4479 | struct elf_aarch64_link_hash_table *globals = |
4480 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
4481 | |
4482 | if (globals->root.splt != NULL && hash != NULL | |
4483 | && hash->root.plt.offset != (bfd_vma) - 1) | |
4484 | { | |
4485 | sym_sec = globals->root.splt; | |
4486 | sym_value = hash->root.plt.offset; | |
4487 | if (sym_sec->output_section != NULL) | |
4488 | destination = (sym_value | |
4489 | + sym_sec->output_offset | |
4490 | + | |
4491 | sym_sec->output_section->vma); | |
4492 | } | |
4493 | else | |
4494 | continue; | |
4495 | } | |
4496 | else | |
4497 | { | |
4498 | bfd_set_error (bfd_error_bad_value); | |
4499 | goto error_ret_free_internal; | |
4500 | } | |
4501 | st_type = ELF_ST_TYPE (hash->root.type); | |
4502 | sym_name = hash->root.root.root.string; | |
4503 | } | |
4504 | ||
4505 | /* Determine what (if any) linker stub is needed. */ | |
9a228467 JW |
4506 | stub_type = aarch64_type_of_stub (section, irela, sym_sec, |
4507 | st_type, destination); | |
a06ea964 NC |
4508 | if (stub_type == aarch64_stub_none) |
4509 | continue; | |
4510 | ||
4511 | /* Support for grouping stub sections. */ | |
4512 | id_sec = htab->stub_group[section->id].link_sec; | |
4513 | ||
4514 | /* Get the name of this stub. */ | |
cec5225b | 4515 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, hash, |
a06ea964 NC |
4516 | irela); |
4517 | if (!stub_name) | |
4518 | goto error_ret_free_internal; | |
4519 | ||
4520 | stub_entry = | |
4521 | aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
4522 | stub_name, FALSE, FALSE); | |
4523 | if (stub_entry != NULL) | |
4524 | { | |
4525 | /* The proper stub has already been created. */ | |
4526 | free (stub_name); | |
3da64fe4 RA |
4527 | /* Always update this stub's target since it may have |
4528 | changed after layout. */ | |
4529 | stub_entry->target_value = sym_value + irela->r_addend; | |
a06ea964 NC |
4530 | continue; |
4531 | } | |
4532 | ||
ef857521 MS |
4533 | stub_entry = _bfd_aarch64_add_stub_entry_in_group |
4534 | (stub_name, section, htab); | |
a06ea964 NC |
4535 | if (stub_entry == NULL) |
4536 | { | |
4537 | free (stub_name); | |
4538 | goto error_ret_free_internal; | |
4539 | } | |
4540 | ||
2f340668 | 4541 | stub_entry->target_value = sym_value + irela->r_addend; |
a06ea964 NC |
4542 | stub_entry->target_section = sym_sec; |
4543 | stub_entry->stub_type = stub_type; | |
4544 | stub_entry->h = hash; | |
4545 | stub_entry->st_type = st_type; | |
4546 | ||
4547 | if (sym_name == NULL) | |
4548 | sym_name = "unnamed"; | |
4549 | len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name); | |
4550 | stub_entry->output_name = bfd_alloc (htab->stub_bfd, len); | |
4551 | if (stub_entry->output_name == NULL) | |
4552 | { | |
4553 | free (stub_name); | |
4554 | goto error_ret_free_internal; | |
4555 | } | |
4556 | ||
4557 | snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME, | |
4558 | sym_name); | |
4559 | ||
4560 | stub_changed = TRUE; | |
4561 | } | |
4562 | ||
4563 | /* We're done with the internal relocs, free them. */ | |
4564 | if (elf_section_data (section)->relocs == NULL) | |
4565 | free (internal_relocs); | |
4566 | } | |
4567 | } | |
4568 | ||
4569 | if (!stub_changed) | |
4570 | break; | |
4571 | ||
13f622ec | 4572 | _bfd_aarch64_resize_stubs (htab); |
a06ea964 NC |
4573 | |
4574 | /* Ask the linker to do its stuff. */ | |
4575 | (*htab->layout_sections_again) (); | |
4576 | stub_changed = FALSE; | |
4577 | } | |
4578 | ||
4579 | return TRUE; | |
4580 | ||
4581 | error_ret_free_local: | |
4582 | return FALSE; | |
4583 | } | |
4584 | ||
4585 | /* Build all the stubs associated with the current output file. The | |
4586 | stubs are kept in a hash table attached to the main linker hash | |
4587 | table. We also set up the .plt entries for statically linked PIC | |
4588 | functions here. This function is called via aarch64_elf_finish in the | |
4589 | linker. */ | |
4590 | ||
4591 | bfd_boolean | |
cec5225b | 4592 | elfNN_aarch64_build_stubs (struct bfd_link_info *info) |
a06ea964 NC |
4593 | { |
4594 | asection *stub_sec; | |
4595 | struct bfd_hash_table *table; | |
cec5225b | 4596 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 4597 | |
cec5225b | 4598 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
4599 | |
4600 | for (stub_sec = htab->stub_bfd->sections; | |
4601 | stub_sec != NULL; stub_sec = stub_sec->next) | |
4602 | { | |
4603 | bfd_size_type size; | |
4604 | ||
4605 | /* Ignore non-stub sections. */ | |
4606 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
4607 | continue; | |
4608 | ||
4609 | /* Allocate memory to hold the linker stubs. */ | |
4610 | size = stub_sec->size; | |
4611 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); | |
4612 | if (stub_sec->contents == NULL && size != 0) | |
4613 | return FALSE; | |
4614 | stub_sec->size = 0; | |
61865519 | 4615 | |
9a2ebffd JW |
4616 | /* Add a branch around the stub section, and a nop, to keep it 8 byte |
4617 | aligned, as long branch stubs contain a 64-bit address. */ | |
61865519 | 4618 | bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents); |
9a2ebffd JW |
4619 | bfd_putl32 (INSN_NOP, stub_sec->contents + 4); |
4620 | stub_sec->size += 8; | |
a06ea964 NC |
4621 | } |
4622 | ||
4623 | /* Build the stubs as directed by the stub hash table. */ | |
4624 | table = &htab->stub_hash_table; | |
4625 | bfd_hash_traverse (table, aarch64_build_one_stub, info); | |
4626 | ||
4627 | return TRUE; | |
4628 | } | |
4629 | ||
4630 | ||
4631 | /* Add an entry to the code/data map for section SEC. */ | |
4632 | ||
4633 | static void | |
cec5225b | 4634 | elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma) |
a06ea964 NC |
4635 | { |
4636 | struct _aarch64_elf_section_data *sec_data = | |
cec5225b | 4637 | elf_aarch64_section_data (sec); |
a06ea964 NC |
4638 | unsigned int newidx; |
4639 | ||
4640 | if (sec_data->map == NULL) | |
4641 | { | |
cec5225b | 4642 | sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
4643 | sec_data->mapcount = 0; |
4644 | sec_data->mapsize = 1; | |
4645 | } | |
4646 | ||
4647 | newidx = sec_data->mapcount++; | |
4648 | ||
4649 | if (sec_data->mapcount > sec_data->mapsize) | |
4650 | { | |
4651 | sec_data->mapsize *= 2; | |
4652 | sec_data->map = bfd_realloc_or_free | |
cec5225b | 4653 | (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
4654 | } |
4655 | ||
4656 | if (sec_data->map) | |
4657 | { | |
4658 | sec_data->map[newidx].vma = vma; | |
4659 | sec_data->map[newidx].type = type; | |
4660 | } | |
4661 | } | |
4662 | ||
4663 | ||
4664 | /* Initialise maps of insn/data for input BFDs. */ | |
4665 | void | |
cec5225b | 4666 | bfd_elfNN_aarch64_init_maps (bfd *abfd) |
a06ea964 NC |
4667 | { |
4668 | Elf_Internal_Sym *isymbuf; | |
4669 | Elf_Internal_Shdr *hdr; | |
4670 | unsigned int i, localsyms; | |
4671 | ||
4672 | /* Make sure that we are dealing with an AArch64 elf binary. */ | |
4673 | if (!is_aarch64_elf (abfd)) | |
4674 | return; | |
4675 | ||
4676 | if ((abfd->flags & DYNAMIC) != 0) | |
68fcca92 | 4677 | return; |
a06ea964 NC |
4678 | |
4679 | hdr = &elf_symtab_hdr (abfd); | |
4680 | localsyms = hdr->sh_info; | |
4681 | ||
4682 | /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field | |
4683 | should contain the number of local symbols, which should come before any | |
4684 | global symbols. Mapping symbols are always local. */ | |
4685 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL); | |
4686 | ||
4687 | /* No internal symbols read? Skip this BFD. */ | |
4688 | if (isymbuf == NULL) | |
4689 | return; | |
4690 | ||
4691 | for (i = 0; i < localsyms; i++) | |
4692 | { | |
4693 | Elf_Internal_Sym *isym = &isymbuf[i]; | |
4694 | asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4695 | const char *name; | |
4696 | ||
4697 | if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL) | |
4698 | { | |
4699 | name = bfd_elf_string_from_elf_section (abfd, | |
4700 | hdr->sh_link, | |
4701 | isym->st_name); | |
4702 | ||
4703 | if (bfd_is_aarch64_special_symbol_name | |
4704 | (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP)) | |
cec5225b | 4705 | elfNN_aarch64_section_map_add (sec, name[1], isym->st_value); |
a06ea964 NC |
4706 | } |
4707 | } | |
4708 | } | |
4709 | ||
37c18eed SD |
4710 | static void |
4711 | setup_plt_values (struct bfd_link_info *link_info, | |
4712 | aarch64_plt_type plt_type) | |
4713 | { | |
4714 | struct elf_aarch64_link_hash_table *globals; | |
4715 | globals = elf_aarch64_hash_table (link_info); | |
4716 | ||
1dbade74 SD |
4717 | if (plt_type == PLT_BTI_PAC) |
4718 | { | |
68bb0359 | 4719 | globals->plt0_entry = elfNN_aarch64_small_plt0_bti_entry; |
1dbade74 SD |
4720 | |
4721 | /* Only in ET_EXEC we need PLTn with BTI. */ | |
4722 | if (bfd_link_pde (link_info)) | |
4723 | { | |
4724 | globals->plt_entry_size = PLT_BTI_PAC_SMALL_ENTRY_SIZE; | |
4725 | globals->plt_entry = elfNN_aarch64_small_plt_bti_pac_entry; | |
4726 | } | |
4727 | else | |
4728 | { | |
4729 | globals->plt_entry_size = PLT_PAC_SMALL_ENTRY_SIZE; | |
4730 | globals->plt_entry = elfNN_aarch64_small_plt_pac_entry; | |
4731 | } | |
4732 | } | |
4733 | else if (plt_type == PLT_BTI) | |
37c18eed | 4734 | { |
37c18eed | 4735 | globals->plt0_entry = elfNN_aarch64_small_plt0_bti_entry; |
37c18eed SD |
4736 | |
4737 | /* Only in ET_EXEC we need PLTn with BTI. */ | |
4738 | if (bfd_link_pde (link_info)) | |
4739 | { | |
4740 | globals->plt_entry_size = PLT_BTI_SMALL_ENTRY_SIZE; | |
4741 | globals->plt_entry = elfNN_aarch64_small_plt_bti_entry; | |
4742 | } | |
4743 | } | |
1dbade74 SD |
4744 | else if (plt_type == PLT_PAC) |
4745 | { | |
1dbade74 SD |
4746 | globals->plt_entry_size = PLT_PAC_SMALL_ENTRY_SIZE; |
4747 | globals->plt_entry = elfNN_aarch64_small_plt_pac_entry; | |
4748 | } | |
37c18eed SD |
4749 | } |
4750 | ||
a06ea964 NC |
4751 | /* Set option values needed during linking. */ |
4752 | void | |
cec5225b | 4753 | bfd_elfNN_aarch64_set_options (struct bfd *output_bfd, |
a06ea964 NC |
4754 | struct bfd_link_info *link_info, |
4755 | int no_enum_warn, | |
68fcca92 | 4756 | int no_wchar_warn, int pic_veneer, |
4106101c | 4757 | int fix_erratum_835769, |
1f56df9d | 4758 | int fix_erratum_843419, |
37c18eed SD |
4759 | int no_apply_dynamic_relocs, |
4760 | aarch64_bti_pac_info bp_info) | |
a06ea964 | 4761 | { |
cec5225b | 4762 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 4763 | |
cec5225b | 4764 | globals = elf_aarch64_hash_table (link_info); |
a06ea964 | 4765 | globals->pic_veneer = pic_veneer; |
68fcca92 | 4766 | globals->fix_erratum_835769 = fix_erratum_835769; |
4106101c MS |
4767 | globals->fix_erratum_843419 = fix_erratum_843419; |
4768 | globals->fix_erratum_843419_adr = TRUE; | |
1f56df9d | 4769 | globals->no_apply_dynamic_relocs = no_apply_dynamic_relocs; |
a06ea964 NC |
4770 | |
4771 | BFD_ASSERT (is_aarch64_elf (output_bfd)); | |
4772 | elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn; | |
4773 | elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn; | |
37c18eed SD |
4774 | |
4775 | switch (bp_info.bti_type) | |
4776 | { | |
4777 | case BTI_WARN: | |
4778 | elf_aarch64_tdata (output_bfd)->no_bti_warn = 0; | |
4779 | elf_aarch64_tdata (output_bfd)->gnu_and_prop | |
4780 | |= GNU_PROPERTY_AARCH64_FEATURE_1_BTI; | |
4781 | break; | |
4782 | ||
4783 | default: | |
4784 | break; | |
4785 | } | |
4786 | elf_aarch64_tdata (output_bfd)->plt_type = bp_info.plt_type; | |
4787 | setup_plt_values (link_info, bp_info.plt_type); | |
a06ea964 NC |
4788 | } |
4789 | ||
a06ea964 NC |
4790 | static bfd_vma |
4791 | aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h, | |
cec5225b | 4792 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
4793 | *globals, struct bfd_link_info *info, |
4794 | bfd_vma value, bfd *output_bfd, | |
4795 | bfd_boolean *unresolved_reloc_p) | |
4796 | { | |
4797 | bfd_vma off = (bfd_vma) - 1; | |
4798 | asection *basegot = globals->root.sgot; | |
4799 | bfd_boolean dyn = globals->root.dynamic_sections_created; | |
4800 | ||
4801 | if (h != NULL) | |
4802 | { | |
a6bb11b2 | 4803 | BFD_ASSERT (basegot != NULL); |
a06ea964 NC |
4804 | off = h->got.offset; |
4805 | BFD_ASSERT (off != (bfd_vma) - 1); | |
0e1862bb L |
4806 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h) |
4807 | || (bfd_link_pic (info) | |
a06ea964 NC |
4808 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
4809 | || (ELF_ST_VISIBILITY (h->other) | |
4810 | && h->root.type == bfd_link_hash_undefweak)) | |
4811 | { | |
4812 | /* This is actually a static link, or it is a -Bsymbolic link | |
4813 | and the symbol is defined locally. We must initialize this | |
4814 | entry in the global offset table. Since the offset must | |
a6bb11b2 YZ |
4815 | always be a multiple of 8 (4 in the case of ILP32), we use |
4816 | the least significant bit to record whether we have | |
4817 | initialized it already. | |
a06ea964 NC |
4818 | When doing a dynamic link, we create a .rel(a).got relocation |
4819 | entry to initialize the value. This is done in the | |
4820 | finish_dynamic_symbol routine. */ | |
4821 | if ((off & 1) != 0) | |
4822 | off &= ~1; | |
4823 | else | |
4824 | { | |
cec5225b | 4825 | bfd_put_NN (output_bfd, value, basegot->contents + off); |
a06ea964 NC |
4826 | h->got.offset |= 1; |
4827 | } | |
4828 | } | |
4829 | else | |
4830 | *unresolved_reloc_p = FALSE; | |
4831 | ||
4832 | off = off + basegot->output_section->vma + basegot->output_offset; | |
4833 | } | |
4834 | ||
4835 | return off; | |
4836 | } | |
4837 | ||
4838 | /* Change R_TYPE to a more efficient access model where possible, | |
4839 | return the new reloc type. */ | |
4840 | ||
a6bb11b2 YZ |
4841 | static bfd_reloc_code_real_type |
4842 | aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type, | |
a06ea964 NC |
4843 | struct elf_link_hash_entry *h) |
4844 | { | |
4845 | bfd_boolean is_local = h == NULL; | |
a6bb11b2 | 4846 | |
a06ea964 NC |
4847 | switch (r_type) |
4848 | { | |
a6bb11b2 | 4849 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 4850 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a6bb11b2 YZ |
4851 | return (is_local |
4852 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4853 | : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21); | |
4854 | ||
389b8029 MS |
4855 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
4856 | return (is_local | |
4857 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4858 | : r_type); | |
4859 | ||
1ada945d MS |
4860 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
4861 | return (is_local | |
4862 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4863 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4864 | ||
0484b454 RL |
4865 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
4866 | return (is_local | |
4867 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4868 | : BFD_RELOC_AARCH64_NONE); | |
4869 | ||
4870 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
4871 | return (is_local | |
4872 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC | |
4873 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC); | |
4874 | ||
4875 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
4876 | return (is_local | |
4877 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 | |
4878 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1); | |
4879 | ||
a6bb11b2 | 4880 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
ce336788 | 4881 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 YZ |
4882 | return (is_local |
4883 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4884 | : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC); | |
4885 | ||
4886 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: | |
4887 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type; | |
4888 | ||
4889 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
4890 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type; | |
4891 | ||
043bf05a MS |
4892 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
4893 | return r_type; | |
4894 | ||
3c12b054 MS |
4895 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
4896 | return (is_local | |
4897 | ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 | |
4898 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4899 | ||
0484b454 | 4900 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
f955cccf | 4901 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 4902 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a06ea964 | 4903 | /* Instructions with these relocations will become NOPs. */ |
a6bb11b2 YZ |
4904 | return BFD_RELOC_AARCH64_NONE; |
4905 | ||
259364ad JW |
4906 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
4907 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: | |
4908 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: | |
4909 | return is_local ? BFD_RELOC_AARCH64_NONE : r_type; | |
4910 | ||
ac734732 RL |
4911 | #if ARCH_SIZE == 64 |
4912 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: | |
4913 | return is_local | |
4914 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC | |
4915 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC; | |
4916 | ||
4917 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: | |
4918 | return is_local | |
4919 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 | |
4920 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1; | |
4921 | #endif | |
4922 | ||
a6bb11b2 YZ |
4923 | default: |
4924 | break; | |
a06ea964 NC |
4925 | } |
4926 | ||
4927 | return r_type; | |
4928 | } | |
4929 | ||
4930 | static unsigned int | |
a6bb11b2 | 4931 | aarch64_reloc_got_type (bfd_reloc_code_real_type r_type) |
a06ea964 NC |
4932 | { |
4933 | switch (r_type) | |
4934 | { | |
a6bb11b2 YZ |
4935 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
4936 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 4937 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 4938 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 4939 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 4940 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 4941 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 4942 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 4943 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
a06ea964 NC |
4944 | return GOT_NORMAL; |
4945 | ||
ce336788 | 4946 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 4947 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 4948 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 4949 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 4950 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
73f925cc | 4951 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 4952 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 4953 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
4954 | return GOT_TLS_GD; |
4955 | ||
0484b454 | 4956 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
f955cccf | 4957 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 4958 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 4959 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 4960 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a6bb11b2 | 4961 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
f955cccf | 4962 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
1ada945d | 4963 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
4964 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
4965 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
4966 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a06ea964 NC |
4967 | return GOT_TLSDESC_GD; |
4968 | ||
a6bb11b2 | 4969 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 4970 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 4971 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 4972 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
4973 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
4974 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
a06ea964 NC |
4975 | return GOT_TLS_IE; |
4976 | ||
a6bb11b2 YZ |
4977 | default: |
4978 | break; | |
a06ea964 NC |
4979 | } |
4980 | return GOT_UNKNOWN; | |
4981 | } | |
4982 | ||
4983 | static bfd_boolean | |
4984 | aarch64_can_relax_tls (bfd *input_bfd, | |
4985 | struct bfd_link_info *info, | |
a6bb11b2 | 4986 | bfd_reloc_code_real_type r_type, |
a06ea964 NC |
4987 | struct elf_link_hash_entry *h, |
4988 | unsigned long r_symndx) | |
4989 | { | |
4990 | unsigned int symbol_got_type; | |
4991 | unsigned int reloc_got_type; | |
4992 | ||
9331eea1 | 4993 | if (! IS_AARCH64_TLS_RELAX_RELOC (r_type)) |
a06ea964 NC |
4994 | return FALSE; |
4995 | ||
cec5225b | 4996 | symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx); |
a06ea964 NC |
4997 | reloc_got_type = aarch64_reloc_got_type (r_type); |
4998 | ||
4999 | if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type)) | |
5000 | return TRUE; | |
5001 | ||
6dda7875 | 5002 | if (!bfd_link_executable (info)) |
a06ea964 NC |
5003 | return FALSE; |
5004 | ||
5005 | if (h && h->root.type == bfd_link_hash_undefweak) | |
5006 | return FALSE; | |
5007 | ||
5008 | return TRUE; | |
5009 | } | |
5010 | ||
a6bb11b2 YZ |
5011 | /* Given the relocation code R_TYPE, return the relaxed bfd reloc |
5012 | enumerator. */ | |
5013 | ||
5014 | static bfd_reloc_code_real_type | |
a06ea964 NC |
5015 | aarch64_tls_transition (bfd *input_bfd, |
5016 | struct bfd_link_info *info, | |
5017 | unsigned int r_type, | |
5018 | struct elf_link_hash_entry *h, | |
5019 | unsigned long r_symndx) | |
5020 | { | |
a6bb11b2 | 5021 | bfd_reloc_code_real_type bfd_r_type |
0aa13fee | 5022 | = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
a06ea964 | 5023 | |
a6bb11b2 YZ |
5024 | if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx)) |
5025 | return bfd_r_type; | |
5026 | ||
5027 | return aarch64_tls_transition_without_check (bfd_r_type, h); | |
a06ea964 NC |
5028 | } |
5029 | ||
5030 | /* Return the base VMA address which should be subtracted from real addresses | |
a6bb11b2 | 5031 | when resolving R_AARCH64_TLS_DTPREL relocation. */ |
a06ea964 NC |
5032 | |
5033 | static bfd_vma | |
5034 | dtpoff_base (struct bfd_link_info *info) | |
5035 | { | |
5036 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
5037 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); | |
5038 | return elf_hash_table (info)->tls_sec->vma; | |
5039 | } | |
5040 | ||
a06ea964 NC |
5041 | /* Return the base VMA address which should be subtracted from real addresses |
5042 | when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */ | |
5043 | ||
5044 | static bfd_vma | |
5045 | tpoff_base (struct bfd_link_info *info) | |
5046 | { | |
5047 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
5048 | ||
5049 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
ac21917f | 5050 | BFD_ASSERT (htab->tls_sec != NULL); |
a06ea964 NC |
5051 | |
5052 | bfd_vma base = align_power ((bfd_vma) TCB_SIZE, | |
5053 | htab->tls_sec->alignment_power); | |
5054 | return htab->tls_sec->vma - base; | |
5055 | } | |
5056 | ||
5057 | static bfd_vma * | |
5058 | symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5059 | unsigned long r_symndx) | |
5060 | { | |
5061 | /* Calculate the address of the GOT entry for symbol | |
5062 | referred to in h. */ | |
5063 | if (h != NULL) | |
5064 | return &h->got.offset; | |
5065 | else | |
5066 | { | |
5067 | /* local symbol */ | |
5068 | struct elf_aarch64_local_symbol *l; | |
5069 | ||
cec5225b | 5070 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
5071 | return &l[r_symndx].got_offset; |
5072 | } | |
5073 | } | |
5074 | ||
5075 | static void | |
5076 | symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5077 | unsigned long r_symndx) | |
5078 | { | |
5079 | bfd_vma *p; | |
5080 | p = symbol_got_offset_ref (input_bfd, h, r_symndx); | |
5081 | *p |= 1; | |
5082 | } | |
5083 | ||
5084 | static int | |
5085 | symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5086 | unsigned long r_symndx) | |
5087 | { | |
5088 | bfd_vma value; | |
5089 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
5090 | return value & 1; | |
5091 | } | |
5092 | ||
5093 | static bfd_vma | |
5094 | symbol_got_offset (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 | value &= ~1; | |
5100 | return value; | |
5101 | } | |
5102 | ||
5103 | static bfd_vma * | |
5104 | symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5105 | unsigned long r_symndx) | |
5106 | { | |
5107 | /* Calculate the address of the GOT entry for symbol | |
5108 | referred to in h. */ | |
5109 | if (h != NULL) | |
5110 | { | |
cec5225b YZ |
5111 | struct elf_aarch64_link_hash_entry *eh; |
5112 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
5113 | return &eh->tlsdesc_got_jump_table_offset; |
5114 | } | |
5115 | else | |
5116 | { | |
5117 | /* local symbol */ | |
5118 | struct elf_aarch64_local_symbol *l; | |
5119 | ||
cec5225b | 5120 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
5121 | return &l[r_symndx].tlsdesc_got_jump_table_offset; |
5122 | } | |
5123 | } | |
5124 | ||
5125 | static void | |
5126 | symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
5127 | unsigned long r_symndx) | |
5128 | { | |
5129 | bfd_vma *p; | |
5130 | p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
5131 | *p |= 1; | |
5132 | } | |
5133 | ||
5134 | static int | |
5135 | symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd, | |
5136 | struct elf_link_hash_entry *h, | |
5137 | unsigned long r_symndx) | |
5138 | { | |
5139 | bfd_vma value; | |
5140 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
5141 | return value & 1; | |
5142 | } | |
5143 | ||
5144 | static bfd_vma | |
5145 | symbol_tlsdesc_got_offset (bfd *input_bfd, 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 | value &= ~1; | |
5151 | return value; | |
5152 | } | |
5153 | ||
68fcca92 JW |
5154 | /* Data for make_branch_to_erratum_835769_stub(). */ |
5155 | ||
5156 | struct erratum_835769_branch_to_stub_data | |
5157 | { | |
4106101c | 5158 | struct bfd_link_info *info; |
68fcca92 JW |
5159 | asection *output_section; |
5160 | bfd_byte *contents; | |
5161 | }; | |
5162 | ||
5163 | /* Helper to insert branches to erratum 835769 stubs in the right | |
5164 | places for a particular section. */ | |
5165 | ||
5166 | static bfd_boolean | |
5167 | make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry, | |
5168 | void *in_arg) | |
5169 | { | |
5170 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
5171 | struct erratum_835769_branch_to_stub_data *data; | |
5172 | bfd_byte *contents; | |
5173 | unsigned long branch_insn = 0; | |
5174 | bfd_vma veneered_insn_loc, veneer_entry_loc; | |
5175 | bfd_signed_vma branch_offset; | |
5176 | unsigned int target; | |
5177 | bfd *abfd; | |
5178 | ||
5179 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
5180 | data = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
5181 | ||
5182 | if (stub_entry->target_section != data->output_section | |
5183 | || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer) | |
5184 | return TRUE; | |
5185 | ||
5186 | contents = data->contents; | |
5187 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
5188 | + stub_entry->target_section->output_offset | |
5189 | + stub_entry->target_value; | |
5190 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
5191 | + stub_entry->stub_sec->output_offset | |
5192 | + stub_entry->stub_offset; | |
5193 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
5194 | ||
5195 | abfd = stub_entry->target_section->owner; | |
5196 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4eca0228 | 5197 | _bfd_error_handler |
90b6238f | 5198 | (_("%pB: error: erratum 835769 stub out " |
4eca0228 | 5199 | "of range (input file too large)"), abfd); |
68fcca92 JW |
5200 | |
5201 | target = stub_entry->target_value; | |
5202 | branch_insn = 0x14000000; | |
5203 | branch_offset >>= 2; | |
5204 | branch_offset &= 0x3ffffff; | |
5205 | branch_insn |= branch_offset; | |
5206 | bfd_putl32 (branch_insn, &contents[target]); | |
5207 | ||
5208 | return TRUE; | |
5209 | } | |
5210 | ||
4106101c MS |
5211 | |
5212 | static bfd_boolean | |
5213 | _bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry, | |
5214 | void *in_arg) | |
5215 | { | |
5216 | struct elf_aarch64_stub_hash_entry *stub_entry | |
5217 | = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
5218 | struct erratum_835769_branch_to_stub_data *data | |
5219 | = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
5220 | struct bfd_link_info *info; | |
5221 | struct elf_aarch64_link_hash_table *htab; | |
5222 | bfd_byte *contents; | |
5223 | asection *section; | |
5224 | bfd *abfd; | |
5225 | bfd_vma place; | |
5226 | uint32_t insn; | |
5227 | ||
5228 | info = data->info; | |
5229 | contents = data->contents; | |
5230 | section = data->output_section; | |
5231 | ||
5232 | htab = elf_aarch64_hash_table (info); | |
5233 | ||
5234 | if (stub_entry->target_section != section | |
5235 | || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer) | |
5236 | return TRUE; | |
5237 | ||
5238 | insn = bfd_getl32 (contents + stub_entry->target_value); | |
5239 | bfd_putl32 (insn, | |
5240 | stub_entry->stub_sec->contents + stub_entry->stub_offset); | |
5241 | ||
5242 | place = (section->output_section->vma + section->output_offset | |
5243 | + stub_entry->adrp_offset); | |
5244 | insn = bfd_getl32 (contents + stub_entry->adrp_offset); | |
5245 | ||
9fca35fc | 5246 | if (!_bfd_aarch64_adrp_p (insn)) |
4106101c MS |
5247 | abort (); |
5248 | ||
5249 | bfd_signed_vma imm = | |
5250 | (_bfd_aarch64_sign_extend | |
5251 | ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33) | |
5252 | - (place & 0xfff)); | |
5253 | ||
5254 | if (htab->fix_erratum_843419_adr | |
5255 | && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM)) | |
5256 | { | |
5257 | insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm) | |
5258 | | AARCH64_RT (insn)); | |
5259 | bfd_putl32 (insn, contents + stub_entry->adrp_offset); | |
5260 | } | |
5261 | else | |
5262 | { | |
5263 | bfd_vma veneered_insn_loc; | |
5264 | bfd_vma veneer_entry_loc; | |
5265 | bfd_signed_vma branch_offset; | |
5266 | uint32_t branch_insn; | |
5267 | ||
5268 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
5269 | + stub_entry->target_section->output_offset | |
5270 | + stub_entry->target_value; | |
5271 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
5272 | + stub_entry->stub_sec->output_offset | |
5273 | + stub_entry->stub_offset; | |
5274 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
5275 | ||
5276 | abfd = stub_entry->target_section->owner; | |
5277 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4eca0228 | 5278 | _bfd_error_handler |
90b6238f | 5279 | (_("%pB: error: erratum 843419 stub out " |
4106101c MS |
5280 | "of range (input file too large)"), abfd); |
5281 | ||
5282 | branch_insn = 0x14000000; | |
5283 | branch_offset >>= 2; | |
5284 | branch_offset &= 0x3ffffff; | |
5285 | branch_insn |= branch_offset; | |
5286 | bfd_putl32 (branch_insn, contents + stub_entry->target_value); | |
5287 | } | |
5288 | return TRUE; | |
5289 | } | |
5290 | ||
5291 | ||
68fcca92 JW |
5292 | static bfd_boolean |
5293 | elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, | |
5294 | struct bfd_link_info *link_info, | |
5295 | asection *sec, | |
5296 | bfd_byte *contents) | |
5297 | ||
5298 | { | |
5299 | struct elf_aarch64_link_hash_table *globals = | |
f872121a | 5300 | elf_aarch64_hash_table (link_info); |
68fcca92 JW |
5301 | |
5302 | if (globals == NULL) | |
5303 | return FALSE; | |
5304 | ||
5305 | /* Fix code to point to erratum 835769 stubs. */ | |
5306 | if (globals->fix_erratum_835769) | |
5307 | { | |
5308 | struct erratum_835769_branch_to_stub_data data; | |
5309 | ||
4106101c | 5310 | data.info = link_info; |
68fcca92 JW |
5311 | data.output_section = sec; |
5312 | data.contents = contents; | |
5313 | bfd_hash_traverse (&globals->stub_hash_table, | |
5314 | make_branch_to_erratum_835769_stub, &data); | |
5315 | } | |
5316 | ||
4106101c MS |
5317 | if (globals->fix_erratum_843419) |
5318 | { | |
5319 | struct erratum_835769_branch_to_stub_data data; | |
5320 | ||
5321 | data.info = link_info; | |
5322 | data.output_section = sec; | |
5323 | data.contents = contents; | |
5324 | bfd_hash_traverse (&globals->stub_hash_table, | |
5325 | _bfd_aarch64_erratum_843419_branch_to_stub, &data); | |
5326 | } | |
5327 | ||
68fcca92 JW |
5328 | return FALSE; |
5329 | } | |
5330 | ||
2aff25ba JW |
5331 | /* Return TRUE if RELOC is a relocation against the base of GOT table. */ |
5332 | ||
5333 | static bfd_boolean | |
5334 | aarch64_relocation_aginst_gp_p (bfd_reloc_code_real_type reloc) | |
5335 | { | |
5336 | return (reloc == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14 | |
5337 | || reloc == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 | |
5338 | || reloc == BFD_RELOC_AARCH64_LD64_GOTOFF_LO15 | |
5339 | || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC | |
5340 | || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G1); | |
5341 | } | |
5342 | ||
4e7fbb34 JW |
5343 | /* Perform a relocation as part of a final link. The input relocation type |
5344 | should be TLS relaxed. */ | |
5345 | ||
a06ea964 | 5346 | static bfd_reloc_status_type |
cec5225b | 5347 | elfNN_aarch64_final_link_relocate (reloc_howto_type *howto, |
a06ea964 NC |
5348 | bfd *input_bfd, |
5349 | bfd *output_bfd, | |
5350 | asection *input_section, | |
5351 | bfd_byte *contents, | |
5352 | Elf_Internal_Rela *rel, | |
5353 | bfd_vma value, | |
5354 | struct bfd_link_info *info, | |
5355 | asection *sym_sec, | |
5356 | struct elf_link_hash_entry *h, | |
5357 | bfd_boolean *unresolved_reloc_p, | |
5358 | bfd_boolean save_addend, | |
1419bbe5 WN |
5359 | bfd_vma *saved_addend, |
5360 | Elf_Internal_Sym *sym) | |
a06ea964 | 5361 | { |
1419bbe5 | 5362 | Elf_Internal_Shdr *symtab_hdr; |
a06ea964 | 5363 | unsigned int r_type = howto->type; |
a6bb11b2 YZ |
5364 | bfd_reloc_code_real_type bfd_r_type |
5365 | = elfNN_aarch64_bfd_reloc_from_howto (howto); | |
a06ea964 NC |
5366 | unsigned long r_symndx; |
5367 | bfd_byte *hit_data = contents + rel->r_offset; | |
96d01d93 | 5368 | bfd_vma place, off, got_entry_addr = 0; |
a06ea964 | 5369 | bfd_signed_vma signed_addend; |
cec5225b | 5370 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 5371 | bfd_boolean weak_undef_p; |
ff07562f | 5372 | bfd_boolean relative_reloc; |
b53b1bed | 5373 | asection *base_got; |
ff07562f | 5374 | bfd_vma orig_value = value; |
ddb7fd0f | 5375 | bfd_boolean resolved_to_zero; |
0c1ded8d | 5376 | bfd_boolean abs_symbol_p; |
a06ea964 | 5377 | |
cec5225b | 5378 | globals = elf_aarch64_hash_table (info); |
a06ea964 | 5379 | |
1419bbe5 WN |
5380 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5381 | ||
a06ea964 NC |
5382 | BFD_ASSERT (is_aarch64_elf (input_bfd)); |
5383 | ||
cec5225b | 5384 | r_symndx = ELFNN_R_SYM (rel->r_info); |
a06ea964 | 5385 | |
a06ea964 NC |
5386 | place = input_section->output_section->vma |
5387 | + input_section->output_offset + rel->r_offset; | |
5388 | ||
5389 | /* Get addend, accumulating the addend for consecutive relocs | |
5390 | which refer to the same offset. */ | |
5391 | signed_addend = saved_addend ? *saved_addend : 0; | |
5392 | signed_addend += rel->r_addend; | |
5393 | ||
5394 | weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak | |
5395 | : bfd_is_und_section (sym_sec)); | |
c691de6a | 5396 | abs_symbol_p = h != NULL && bfd_is_abs_symbol (&h->root); |
0c1ded8d | 5397 | |
a6bb11b2 | 5398 | |
1419bbe5 WN |
5399 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
5400 | it here if it is defined in a non-shared object. */ | |
5401 | if (h != NULL | |
5402 | && h->type == STT_GNU_IFUNC | |
5403 | && h->def_regular) | |
5404 | { | |
5405 | asection *plt; | |
5406 | const char *name; | |
99ad26cb | 5407 | bfd_vma addend = 0; |
1419bbe5 | 5408 | |
545bc2b3 SN |
5409 | if ((input_section->flags & SEC_ALLOC) == 0) |
5410 | { | |
f657f8c4 NC |
5411 | /* If this is a SHT_NOTE section without SHF_ALLOC, treat |
5412 | STT_GNU_IFUNC symbol as STT_FUNC. */ | |
5413 | if (elf_section_type (input_section) == SHT_NOTE) | |
5414 | goto skip_ifunc; | |
5415 | ||
545bc2b3 SN |
5416 | /* Dynamic relocs are not propagated for SEC_DEBUGGING |
5417 | sections because such sections are not SEC_ALLOC and | |
5418 | thus ld.so will not process them. */ | |
5419 | if ((input_section->flags & SEC_DEBUGGING) != 0) | |
5420 | return bfd_reloc_ok; | |
5421 | ||
5422 | if (h->root.root.string) | |
5423 | name = h->root.root.string; | |
5424 | else | |
5425 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, NULL); | |
5426 | _bfd_error_handler | |
5427 | /* xgettext:c-format */ | |
2dcf00ce AM |
5428 | (_("%pB(%pA+%#" PRIx64 "): " |
5429 | "unresolvable %s relocation against symbol `%s'"), | |
5430 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
5431 | howto->name, name); | |
545bc2b3 | 5432 | bfd_set_error (bfd_error_bad_value); |
1d75a8e2 | 5433 | return bfd_reloc_notsupported; |
545bc2b3 SN |
5434 | } |
5435 | else if (h->plt.offset == (bfd_vma) -1) | |
5436 | goto bad_ifunc_reloc; | |
1419bbe5 WN |
5437 | |
5438 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
5439 | plt = globals->root.splt ? globals->root.splt : globals->root.iplt; | |
5440 | value = (plt->output_section->vma + plt->output_offset + h->plt.offset); | |
5441 | ||
5442 | switch (bfd_r_type) | |
5443 | { | |
5444 | default: | |
545bc2b3 | 5445 | bad_ifunc_reloc: |
1419bbe5 WN |
5446 | if (h->root.root.string) |
5447 | name = h->root.root.string; | |
5448 | else | |
5449 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
5450 | NULL); | |
4eca0228 | 5451 | _bfd_error_handler |
695344c0 | 5452 | /* xgettext:c-format */ |
871b3ab2 | 5453 | (_("%pB: relocation %s against STT_GNU_IFUNC " |
1419bbe5 WN |
5454 | "symbol `%s' isn't handled by %s"), input_bfd, |
5455 | howto->name, name, __FUNCTION__); | |
5456 | bfd_set_error (bfd_error_bad_value); | |
1d75a8e2 | 5457 | return bfd_reloc_notsupported; |
1419bbe5 WN |
5458 | |
5459 | case BFD_RELOC_AARCH64_NN: | |
5460 | if (rel->r_addend != 0) | |
5461 | { | |
5462 | if (h->root.root.string) | |
5463 | name = h->root.root.string; | |
5464 | else | |
5465 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
5466 | sym, NULL); | |
4eca0228 | 5467 | _bfd_error_handler |
695344c0 | 5468 | /* xgettext:c-format */ |
871b3ab2 | 5469 | (_("%pB: relocation %s against STT_GNU_IFUNC " |
2dcf00ce AM |
5470 | "symbol `%s' has non-zero addend: %" PRId64), |
5471 | input_bfd, howto->name, name, (int64_t) rel->r_addend); | |
1419bbe5 | 5472 | bfd_set_error (bfd_error_bad_value); |
1d75a8e2 | 5473 | return bfd_reloc_notsupported; |
1419bbe5 WN |
5474 | } |
5475 | ||
5476 | /* Generate dynamic relocation only when there is a | |
5477 | non-GOT reference in a shared object. */ | |
0e1862bb | 5478 | if (bfd_link_pic (info) && h->non_got_ref) |
1419bbe5 WN |
5479 | { |
5480 | Elf_Internal_Rela outrel; | |
5481 | asection *sreloc; | |
5482 | ||
5483 | /* Need a dynamic relocation to get the real function | |
5484 | address. */ | |
5485 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
5486 | info, | |
5487 | input_section, | |
5488 | rel->r_offset); | |
5489 | if (outrel.r_offset == (bfd_vma) -1 | |
5490 | || outrel.r_offset == (bfd_vma) -2) | |
5491 | abort (); | |
5492 | ||
5493 | outrel.r_offset += (input_section->output_section->vma | |
5494 | + input_section->output_offset); | |
5495 | ||
5496 | if (h->dynindx == -1 | |
5497 | || h->forced_local | |
0e1862bb | 5498 | || bfd_link_executable (info)) |
1419bbe5 WN |
5499 | { |
5500 | /* This symbol is resolved locally. */ | |
5501 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
5502 | outrel.r_addend = (h->root.u.def.value | |
5503 | + h->root.u.def.section->output_section->vma | |
5504 | + h->root.u.def.section->output_offset); | |
5505 | } | |
5506 | else | |
5507 | { | |
5508 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); | |
5509 | outrel.r_addend = 0; | |
5510 | } | |
5511 | ||
5512 | sreloc = globals->root.irelifunc; | |
5513 | elf_append_rela (output_bfd, sreloc, &outrel); | |
5514 | ||
5515 | /* If this reloc is against an external symbol, we | |
5516 | do not want to fiddle with the addend. Otherwise, | |
5517 | we need to include the symbol value so that it | |
5518 | becomes an addend for the dynamic reloc. For an | |
5519 | internal symbol, we have updated addend. */ | |
5520 | return bfd_reloc_ok; | |
5521 | } | |
5522 | /* FALLTHROUGH */ | |
1419bbe5 | 5523 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 5524 | case BFD_RELOC_AARCH64_JUMP26: |
1419bbe5 WN |
5525 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5526 | signed_addend, | |
5527 | weak_undef_p); | |
5528 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, | |
5529 | howto, value); | |
1419bbe5 WN |
5530 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
5531 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 5532 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 5533 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 5534 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
dc8008f5 | 5535 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 5536 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
a2e1db00 | 5537 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
ce336788 | 5538 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
1419bbe5 WN |
5539 | base_got = globals->root.sgot; |
5540 | off = h->got.offset; | |
5541 | ||
5542 | if (base_got == NULL) | |
5543 | abort (); | |
5544 | ||
5545 | if (off == (bfd_vma) -1) | |
5546 | { | |
5547 | bfd_vma plt_index; | |
5548 | ||
5549 | /* We can't use h->got.offset here to save state, or | |
5550 | even just remember the offset, as finish_dynamic_symbol | |
5551 | would use that as offset into .got. */ | |
5552 | ||
5553 | if (globals->root.splt != NULL) | |
5554 | { | |
b1ee0cc4 WN |
5555 | plt_index = ((h->plt.offset - globals->plt_header_size) / |
5556 | globals->plt_entry_size); | |
1419bbe5 WN |
5557 | off = (plt_index + 3) * GOT_ENTRY_SIZE; |
5558 | base_got = globals->root.sgotplt; | |
5559 | } | |
5560 | else | |
5561 | { | |
5562 | plt_index = h->plt.offset / globals->plt_entry_size; | |
5563 | off = plt_index * GOT_ENTRY_SIZE; | |
5564 | base_got = globals->root.igotplt; | |
5565 | } | |
5566 | ||
5567 | if (h->dynindx == -1 | |
5568 | || h->forced_local | |
5569 | || info->symbolic) | |
5570 | { | |
5571 | /* This references the local definition. We must | |
5572 | initialize this entry in the global offset table. | |
5573 | Since the offset must always be a multiple of 8, | |
5574 | we use the least significant bit to record | |
5575 | whether we have initialized it already. | |
5576 | ||
5577 | When doing a dynamic link, we create a .rela.got | |
5578 | relocation entry to initialize the value. This | |
5579 | is done in the finish_dynamic_symbol routine. */ | |
5580 | if ((off & 1) != 0) | |
5581 | off &= ~1; | |
5582 | else | |
5583 | { | |
5584 | bfd_put_NN (output_bfd, value, | |
5585 | base_got->contents + off); | |
5586 | /* Note that this is harmless as -1 | 1 still is -1. */ | |
5587 | h->got.offset |= 1; | |
5588 | } | |
5589 | } | |
5590 | value = (base_got->output_section->vma | |
5591 | + base_got->output_offset + off); | |
5592 | } | |
5593 | else | |
5594 | value = aarch64_calculate_got_entry_vma (h, globals, info, | |
5595 | value, output_bfd, | |
5596 | unresolved_reloc_p); | |
a0becb89 | 5597 | |
2aff25ba JW |
5598 | if (aarch64_relocation_aginst_gp_p (bfd_r_type)) |
5599 | addend = (globals->root.sgot->output_section->vma | |
5600 | + globals->root.sgot->output_offset); | |
a0becb89 | 5601 | |
1419bbe5 | 5602 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
99ad26cb | 5603 | addend, weak_undef_p); |
1419bbe5 | 5604 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value); |
1419bbe5 | 5605 | case BFD_RELOC_AARCH64_ADD_LO12: |
ce336788 | 5606 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: |
1419bbe5 WN |
5607 | break; |
5608 | } | |
5609 | } | |
5610 | ||
f657f8c4 | 5611 | skip_ifunc: |
ddb7fd0f L |
5612 | resolved_to_zero = (h != NULL |
5613 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
5614 | ||
a6bb11b2 | 5615 | switch (bfd_r_type) |
a06ea964 | 5616 | { |
a6bb11b2 | 5617 | case BFD_RELOC_AARCH64_NONE: |
0484b454 | 5618 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
a6bb11b2 | 5619 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
0484b454 | 5620 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
a06ea964 NC |
5621 | *unresolved_reloc_p = FALSE; |
5622 | return bfd_reloc_ok; | |
5623 | ||
a6bb11b2 | 5624 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
5625 | |
5626 | /* When generating a shared object or relocatable executable, these | |
07d6d2b8 AM |
5627 | relocations are copied into the output file to be resolved at |
5628 | run time. */ | |
6353d82b JW |
5629 | if (((bfd_link_pic (info) |
5630 | || globals->root.is_relocatable_executable) | |
5631 | && (input_section->flags & SEC_ALLOC) | |
5632 | && (h == NULL | |
ddb7fd0f L |
5633 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
5634 | && !resolved_to_zero) | |
6353d82b JW |
5635 | || h->root.type != bfd_link_hash_undefweak)) |
5636 | /* Or we are creating an executable, we may need to keep relocations | |
5637 | for symbols satisfied by a dynamic library if we manage to avoid | |
5638 | copy relocs for the symbol. */ | |
5639 | || (ELIMINATE_COPY_RELOCS | |
5640 | && !bfd_link_pic (info) | |
5641 | && h != NULL | |
5642 | && (input_section->flags & SEC_ALLOC) | |
5643 | && h->dynindx != -1 | |
5644 | && !h->non_got_ref | |
5645 | && ((h->def_dynamic | |
5646 | && !h->def_regular) | |
5647 | || h->root.type == bfd_link_hash_undefweak | |
5648 | || h->root.type == bfd_link_hash_undefined))) | |
a06ea964 NC |
5649 | { |
5650 | Elf_Internal_Rela outrel; | |
5651 | bfd_byte *loc; | |
5652 | bfd_boolean skip, relocate; | |
5653 | asection *sreloc; | |
5654 | ||
5655 | *unresolved_reloc_p = FALSE; | |
5656 | ||
a06ea964 NC |
5657 | skip = FALSE; |
5658 | relocate = FALSE; | |
5659 | ||
5660 | outrel.r_addend = signed_addend; | |
5661 | outrel.r_offset = | |
5662 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
5663 | rel->r_offset); | |
5664 | if (outrel.r_offset == (bfd_vma) - 1) | |
5665 | skip = TRUE; | |
5666 | else if (outrel.r_offset == (bfd_vma) - 2) | |
5667 | { | |
5668 | skip = TRUE; | |
5669 | relocate = TRUE; | |
5670 | } | |
0c1ded8d RL |
5671 | else if (abs_symbol_p) |
5672 | { | |
5673 | /* Local absolute symbol. */ | |
5674 | skip = (h->forced_local || (h->dynindx == -1)); | |
5675 | relocate = skip; | |
5676 | } | |
a06ea964 NC |
5677 | |
5678 | outrel.r_offset += (input_section->output_section->vma | |
5679 | + input_section->output_offset); | |
5680 | ||
5681 | if (skip) | |
5682 | memset (&outrel, 0, sizeof outrel); | |
5683 | else if (h != NULL | |
5684 | && h->dynindx != -1 | |
0e1862bb | 5685 | && (!bfd_link_pic (info) |
0c1ded8d | 5686 | || !(bfd_link_pie (info) || SYMBOLIC_BIND (info, h)) |
0e1862bb | 5687 | || !h->def_regular)) |
cec5225b | 5688 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); |
a06ea964 NC |
5689 | else |
5690 | { | |
5691 | int symbol; | |
5692 | ||
5693 | /* On SVR4-ish systems, the dynamic loader cannot | |
5694 | relocate the text and data segments independently, | |
5695 | so the symbol does not matter. */ | |
5696 | symbol = 0; | |
1f56df9d | 5697 | relocate = globals->no_apply_dynamic_relocs ? FALSE : TRUE; |
a6bb11b2 | 5698 | outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE)); |
a06ea964 NC |
5699 | outrel.r_addend += value; |
5700 | } | |
5701 | ||
1419bbe5 WN |
5702 | sreloc = elf_section_data (input_section)->sreloc; |
5703 | if (sreloc == NULL || sreloc->contents == NULL) | |
5704 | return bfd_reloc_notsupported; | |
5705 | ||
5706 | loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals); | |
cec5225b | 5707 | bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc); |
a06ea964 | 5708 | |
1419bbe5 | 5709 | if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size) |
a06ea964 NC |
5710 | { |
5711 | /* Sanity to check that we have previously allocated | |
5712 | sufficient space in the relocation section for the | |
5713 | number of relocations we actually want to emit. */ | |
5714 | abort (); | |
5715 | } | |
5716 | ||
5717 | /* If this reloc is against an external symbol, we do not want to | |
5718 | fiddle with the addend. Otherwise, we need to include the symbol | |
5719 | value so that it becomes an addend for the dynamic reloc. */ | |
5720 | if (!relocate) | |
5721 | return bfd_reloc_ok; | |
5722 | ||
5723 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5724 | contents, rel->r_offset, value, | |
5725 | signed_addend); | |
5726 | } | |
5727 | else | |
5728 | value += signed_addend; | |
5729 | break; | |
5730 | ||
a6bb11b2 | 5731 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 5732 | case BFD_RELOC_AARCH64_JUMP26: |
a06ea964 NC |
5733 | { |
5734 | asection *splt = globals->root.splt; | |
5735 | bfd_boolean via_plt_p = | |
5736 | splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1; | |
5737 | ||
5738 | /* A call to an undefined weak symbol is converted to a jump to | |
5739 | the next instruction unless a PLT entry will be created. | |
5740 | The jump to the next instruction is optimized as a NOP. | |
5741 | Do the same for local undefined symbols. */ | |
5742 | if (weak_undef_p && ! via_plt_p) | |
5743 | { | |
5744 | bfd_putl32 (INSN_NOP, hit_data); | |
5745 | return bfd_reloc_ok; | |
5746 | } | |
5747 | ||
5748 | /* If the call goes through a PLT entry, make sure to | |
5749 | check distance to the right destination address. */ | |
5750 | if (via_plt_p) | |
07f9ddfe JW |
5751 | value = (splt->output_section->vma |
5752 | + splt->output_offset + h->plt.offset); | |
5753 | ||
5754 | /* Check if a stub has to be inserted because the destination | |
5755 | is too far away. */ | |
5756 | struct elf_aarch64_stub_hash_entry *stub_entry = NULL; | |
2f340668 JW |
5757 | |
5758 | /* If the branch destination is directed to plt stub, "value" will be | |
5759 | the final destination, otherwise we should plus signed_addend, it may | |
5760 | contain non-zero value, for example call to local function symbol | |
5761 | which are turned into "sec_sym + sec_off", and sec_off is kept in | |
5762 | signed_addend. */ | |
5763 | if (! aarch64_valid_branch_p (via_plt_p ? value : value + signed_addend, | |
5764 | place)) | |
07f9ddfe JW |
5765 | /* The target is out of reach, so redirect the branch to |
5766 | the local stub for this function. */ | |
5767 | stub_entry = elfNN_aarch64_get_stub_entry (input_section, sym_sec, h, | |
5768 | rel, globals); | |
5769 | if (stub_entry != NULL) | |
2f340668 JW |
5770 | { |
5771 | value = (stub_entry->stub_offset | |
5772 | + stub_entry->stub_sec->output_offset | |
5773 | + stub_entry->stub_sec->output_section->vma); | |
5774 | ||
5775 | /* We have redirected the destination to stub entry address, | |
5776 | so ignore any addend record in the original rela entry. */ | |
5777 | signed_addend = 0; | |
5778 | } | |
a06ea964 | 5779 | } |
caed7120 YZ |
5780 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5781 | signed_addend, weak_undef_p); | |
07f9ddfe | 5782 | *unresolved_reloc_p = FALSE; |
a06ea964 NC |
5783 | break; |
5784 | ||
dcbd20eb JW |
5785 | case BFD_RELOC_AARCH64_16_PCREL: |
5786 | case BFD_RELOC_AARCH64_32_PCREL: | |
5787 | case BFD_RELOC_AARCH64_64_PCREL: | |
ce336788 JW |
5788 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
5789 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
5790 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
5791 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
1daf502a RL |
5792 | case BFD_RELOC_AARCH64_MOVW_PREL_G0: |
5793 | case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC: | |
5794 | case BFD_RELOC_AARCH64_MOVW_PREL_G1: | |
5795 | case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC: | |
5796 | case BFD_RELOC_AARCH64_MOVW_PREL_G2: | |
5797 | case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC: | |
5798 | case BFD_RELOC_AARCH64_MOVW_PREL_G3: | |
0e1862bb | 5799 | if (bfd_link_pic (info) |
dcbd20eb JW |
5800 | && (input_section->flags & SEC_ALLOC) != 0 |
5801 | && (input_section->flags & SEC_READONLY) != 0 | |
d68f1976 | 5802 | && !SYMBOL_REFERENCES_LOCAL (info, h)) |
dcbd20eb JW |
5803 | { |
5804 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
5805 | ||
4eca0228 | 5806 | _bfd_error_handler |
695344c0 | 5807 | /* xgettext:c-format */ |
871b3ab2 | 5808 | (_("%pB: relocation %s against symbol `%s' which may bind " |
d68f1976 JW |
5809 | "externally can not be used when making a shared object; " |
5810 | "recompile with -fPIC"), | |
dcbd20eb JW |
5811 | input_bfd, elfNN_aarch64_howto_table[howto_index].name, |
5812 | h->root.root.string); | |
5813 | bfd_set_error (bfd_error_bad_value); | |
1d75a8e2 | 5814 | return bfd_reloc_notsupported; |
dcbd20eb | 5815 | } |
1a0670f3 | 5816 | /* Fall through. */ |
dcbd20eb | 5817 | |
a6bb11b2 | 5818 | case BFD_RELOC_AARCH64_16: |
92d77487 RL |
5819 | #if ARCH_SIZE == 64 |
5820 | case BFD_RELOC_AARCH64_32: | |
5821 | #endif | |
a6bb11b2 | 5822 | case BFD_RELOC_AARCH64_ADD_LO12: |
a6bb11b2 | 5823 | case BFD_RELOC_AARCH64_BRANCH19: |
ce336788 | 5824 | case BFD_RELOC_AARCH64_LDST128_LO12: |
a6bb11b2 YZ |
5825 | case BFD_RELOC_AARCH64_LDST16_LO12: |
5826 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
5827 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
ce336788 | 5828 | case BFD_RELOC_AARCH64_LDST8_LO12: |
a6bb11b2 YZ |
5829 | case BFD_RELOC_AARCH64_MOVW_G0: |
5830 | case BFD_RELOC_AARCH64_MOVW_G0_NC: | |
ce336788 | 5831 | case BFD_RELOC_AARCH64_MOVW_G0_S: |
a6bb11b2 YZ |
5832 | case BFD_RELOC_AARCH64_MOVW_G1: |
5833 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
ce336788 | 5834 | case BFD_RELOC_AARCH64_MOVW_G1_S: |
a6bb11b2 YZ |
5835 | case BFD_RELOC_AARCH64_MOVW_G2: |
5836 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
ce336788 | 5837 | case BFD_RELOC_AARCH64_MOVW_G2_S: |
a6bb11b2 | 5838 | case BFD_RELOC_AARCH64_MOVW_G3: |
a6bb11b2 | 5839 | case BFD_RELOC_AARCH64_TSTBR14: |
caed7120 YZ |
5840 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5841 | signed_addend, weak_undef_p); | |
a06ea964 NC |
5842 | break; |
5843 | ||
a6bb11b2 YZ |
5844 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
5845 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 5846 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 5847 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 5848 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 5849 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
2aff25ba JW |
5850 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
5851 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: | |
5852 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: | |
a06ea964 NC |
5853 | if (globals->root.sgot == NULL) |
5854 | BFD_ASSERT (h != NULL); | |
5855 | ||
ff07562f | 5856 | relative_reloc = FALSE; |
a06ea964 NC |
5857 | if (h != NULL) |
5858 | { | |
99ad26cb | 5859 | bfd_vma addend = 0; |
ff07562f JW |
5860 | |
5861 | /* If a symbol is not dynamic and is not undefined weak, bind it | |
5862 | locally and generate a RELATIVE relocation under PIC mode. | |
5863 | ||
5864 | NOTE: one symbol may be referenced by several relocations, we | |
5865 | should only generate one RELATIVE relocation for that symbol. | |
5866 | Therefore, check GOT offset mark first. */ | |
5867 | if (h->dynindx == -1 | |
5868 | && !h->forced_local | |
5869 | && h->root.type != bfd_link_hash_undefweak | |
5870 | && bfd_link_pic (info) | |
5871 | && !symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
5872 | relative_reloc = TRUE; | |
5873 | ||
a06ea964 NC |
5874 | value = aarch64_calculate_got_entry_vma (h, globals, info, value, |
5875 | output_bfd, | |
5876 | unresolved_reloc_p); | |
ff07562f JW |
5877 | /* Record the GOT entry address which will be used when generating |
5878 | RELATIVE relocation. */ | |
5879 | if (relative_reloc) | |
5880 | got_entry_addr = value; | |
5881 | ||
2aff25ba | 5882 | if (aarch64_relocation_aginst_gp_p (bfd_r_type)) |
99ad26cb JW |
5883 | addend = (globals->root.sgot->output_section->vma |
5884 | + globals->root.sgot->output_offset); | |
caed7120 | 5885 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
99ad26cb | 5886 | addend, weak_undef_p); |
a06ea964 | 5887 | } |
b53b1bed JW |
5888 | else |
5889 | { | |
99ad26cb | 5890 | bfd_vma addend = 0; |
b53b1bed JW |
5891 | struct elf_aarch64_local_symbol *locals |
5892 | = elf_aarch64_locals (input_bfd); | |
5893 | ||
5894 | if (locals == NULL) | |
5895 | { | |
5896 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
4eca0228 | 5897 | _bfd_error_handler |
695344c0 | 5898 | /* xgettext:c-format */ |
90b6238f | 5899 | (_("%pB: local symbol descriptor table be NULL when applying " |
b53b1bed JW |
5900 | "relocation %s against local symbol"), |
5901 | input_bfd, elfNN_aarch64_howto_table[howto_index].name); | |
5902 | abort (); | |
5903 | } | |
5904 | ||
5905 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
5906 | base_got = globals->root.sgot; | |
ff07562f JW |
5907 | got_entry_addr = (base_got->output_section->vma |
5908 | + base_got->output_offset + off); | |
b53b1bed JW |
5909 | |
5910 | if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
5911 | { | |
5912 | bfd_put_64 (output_bfd, value, base_got->contents + off); | |
5913 | ||
ff07562f JW |
5914 | /* For local symbol, we have done absolute relocation in static |
5915 | linking stage. While for shared library, we need to update the | |
5916 | content of GOT entry according to the shared object's runtime | |
5917 | base address. So, we need to generate a R_AARCH64_RELATIVE reloc | |
5918 | for dynamic linker. */ | |
0e1862bb | 5919 | if (bfd_link_pic (info)) |
ff07562f | 5920 | relative_reloc = TRUE; |
b53b1bed JW |
5921 | |
5922 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
5923 | } | |
5924 | ||
5925 | /* Update the relocation value to GOT entry addr as we have transformed | |
5926 | the direct data access into indirect data access through GOT. */ | |
5927 | value = got_entry_addr; | |
99ad26cb | 5928 | |
2aff25ba | 5929 | if (aarch64_relocation_aginst_gp_p (bfd_r_type)) |
99ad26cb JW |
5930 | addend = base_got->output_section->vma + base_got->output_offset; |
5931 | ||
5932 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, | |
5933 | addend, weak_undef_p); | |
b53b1bed | 5934 | } |
ff07562f JW |
5935 | |
5936 | if (relative_reloc) | |
5937 | { | |
5938 | asection *s; | |
5939 | Elf_Internal_Rela outrel; | |
5940 | ||
5941 | s = globals->root.srelgot; | |
5942 | if (s == NULL) | |
5943 | abort (); | |
5944 | ||
5945 | outrel.r_offset = got_entry_addr; | |
5946 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); | |
5947 | outrel.r_addend = orig_value; | |
5948 | elf_append_rela (output_bfd, s, &outrel); | |
5949 | } | |
a2e1db00 RL |
5950 | break; |
5951 | ||
ce336788 | 5952 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 5953 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 5954 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 5955 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 5956 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 5957 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 5958 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
73f925cc | 5959 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 5960 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 5961 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
5962 | if (globals->root.sgot == NULL) |
5963 | return bfd_reloc_notsupported; | |
5964 | ||
5965 | value = (symbol_got_offset (input_bfd, h, r_symndx) | |
5966 | + globals->root.sgot->output_section->vma | |
f44a1f8e | 5967 | + globals->root.sgot->output_offset); |
a06ea964 | 5968 | |
caed7120 YZ |
5969 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5970 | 0, weak_undef_p); | |
a06ea964 NC |
5971 | *unresolved_reloc_p = FALSE; |
5972 | break; | |
5973 | ||
7ba7cfe4 | 5974 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 5975 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
3b957e5b RL |
5976 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
5977 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
94facae3 RL |
5978 | if (globals->root.sgot == NULL) |
5979 | return bfd_reloc_notsupported; | |
5980 | ||
5981 | value = symbol_got_offset (input_bfd, h, r_symndx); | |
5982 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, | |
5983 | 0, weak_undef_p); | |
5984 | *unresolved_reloc_p = FALSE; | |
5985 | break; | |
5986 | ||
6ffe9a1b | 5987 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12: |
40fbed84 | 5988 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12: |
753999c1 | 5989 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC: |
07c9aa07 JW |
5990 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12: |
5991 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC: | |
5992 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12: | |
5993 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC: | |
5994 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12: | |
5995 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC: | |
5996 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12: | |
5997 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC: | |
6ffe9a1b JW |
5998 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0: |
5999 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC: | |
6000 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1: | |
6001 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC: | |
6002 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2: | |
40fbed84 JW |
6003 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
6004 | signed_addend - dtpoff_base (info), | |
6005 | weak_undef_p); | |
6006 | break; | |
6007 | ||
a6bb11b2 YZ |
6008 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
6009 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: | |
6010 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: | |
e04ef022 RL |
6011 | case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12: |
6012 | case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC: | |
6013 | case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12: | |
6014 | case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC: | |
6015 | case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12: | |
6016 | case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC: | |
6017 | case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12: | |
6018 | case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC: | |
a6bb11b2 YZ |
6019 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: |
6020 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
6021 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: | |
6022 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
6023 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
caed7120 YZ |
6024 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
6025 | signed_addend - tpoff_base (info), | |
6026 | weak_undef_p); | |
a06ea964 NC |
6027 | *unresolved_reloc_p = FALSE; |
6028 | break; | |
6029 | ||
f955cccf | 6030 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 6031 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 6032 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 6033 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
f955cccf | 6034 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
1ada945d | 6035 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
6036 | if (globals->root.sgot == NULL) |
6037 | return bfd_reloc_notsupported; | |
a06ea964 NC |
6038 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) |
6039 | + globals->root.sgotplt->output_section->vma | |
f44a1f8e | 6040 | + globals->root.sgotplt->output_offset |
a06ea964 NC |
6041 | + globals->sgotplt_jump_table_size); |
6042 | ||
caed7120 YZ |
6043 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
6044 | 0, weak_undef_p); | |
a06ea964 NC |
6045 | *unresolved_reloc_p = FALSE; |
6046 | break; | |
6047 | ||
0484b454 RL |
6048 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
6049 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
6050 | if (globals->root.sgot == NULL) | |
6051 | return bfd_reloc_notsupported; | |
6052 | ||
6053 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) | |
6054 | + globals->root.sgotplt->output_section->vma | |
6055 | + globals->root.sgotplt->output_offset | |
6056 | + globals->sgotplt_jump_table_size); | |
6057 | ||
6058 | value -= (globals->root.sgot->output_section->vma | |
6059 | + globals->root.sgot->output_offset); | |
6060 | ||
6061 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, | |
6062 | 0, weak_undef_p); | |
6063 | *unresolved_reloc_p = FALSE; | |
6064 | break; | |
6065 | ||
a06ea964 NC |
6066 | default: |
6067 | return bfd_reloc_notsupported; | |
6068 | } | |
6069 | ||
6070 | if (saved_addend) | |
6071 | *saved_addend = value; | |
6072 | ||
6073 | /* Only apply the final relocation in a sequence. */ | |
6074 | if (save_addend) | |
6075 | return bfd_reloc_continue; | |
6076 | ||
caed7120 YZ |
6077 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, |
6078 | howto, value); | |
a06ea964 NC |
6079 | } |
6080 | ||
2d0ca824 YN |
6081 | /* LP64 and ILP32 operates on x- and w-registers respectively. |
6082 | Next definitions take into account the difference between | |
6083 | corresponding machine codes. R means x-register if the target | |
6084 | arch is LP64, and w-register if the target is ILP32. */ | |
6085 | ||
6086 | #if ARCH_SIZE == 64 | |
6087 | # define add_R0_R0 (0x91000000) | |
6088 | # define add_R0_R0_R1 (0x8b000020) | |
6089 | # define add_R0_R1 (0x91400020) | |
6090 | # define ldr_R0 (0x58000000) | |
6091 | # define ldr_R0_mask(i) (i & 0xffffffe0) | |
6092 | # define ldr_R0_x0 (0xf9400000) | |
6093 | # define ldr_hw_R0 (0xf2a00000) | |
6094 | # define movk_R0 (0xf2800000) | |
6095 | # define movz_R0 (0xd2a00000) | |
6096 | # define movz_hw_R0 (0xd2c00000) | |
6097 | #else /*ARCH_SIZE == 32 */ | |
6098 | # define add_R0_R0 (0x11000000) | |
6099 | # define add_R0_R0_R1 (0x0b000020) | |
6100 | # define add_R0_R1 (0x11400020) | |
6101 | # define ldr_R0 (0x18000000) | |
6102 | # define ldr_R0_mask(i) (i & 0xbfffffe0) | |
6103 | # define ldr_R0_x0 (0xb9400000) | |
6104 | # define ldr_hw_R0 (0x72a00000) | |
6105 | # define movk_R0 (0x72800000) | |
6106 | # define movz_R0 (0x52a00000) | |
6107 | # define movz_hw_R0 (0x52c00000) | |
6108 | #endif | |
6109 | ||
9fca35fc TC |
6110 | /* Structure to hold payload for _bfd_aarch64_erratum_843419_clear_stub, |
6111 | it is used to identify the stub information to reset. */ | |
6112 | ||
6113 | struct erratum_843419_branch_to_stub_clear_data | |
6114 | { | |
6115 | bfd_vma adrp_offset; | |
6116 | asection *output_section; | |
6117 | }; | |
6118 | ||
6119 | /* Clear the erratum information for GEN_ENTRY if the ADRP_OFFSET and | |
6120 | section inside IN_ARG matches. The clearing is done by setting the | |
6121 | stub_type to none. */ | |
6122 | ||
6123 | static bfd_boolean | |
6124 | _bfd_aarch64_erratum_843419_clear_stub (struct bfd_hash_entry *gen_entry, | |
6125 | void *in_arg) | |
6126 | { | |
6127 | struct elf_aarch64_stub_hash_entry *stub_entry | |
6128 | = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
6129 | struct erratum_843419_branch_to_stub_clear_data *data | |
6130 | = (struct erratum_843419_branch_to_stub_clear_data *) in_arg; | |
6131 | ||
6132 | if (stub_entry->target_section != data->output_section | |
6133 | || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer | |
6134 | || stub_entry->adrp_offset != data->adrp_offset) | |
6135 | return TRUE; | |
6136 | ||
6137 | /* Change the stub type instead of removing the entry, removing from the hash | |
6138 | table would be slower and we have already reserved the memory for the entry | |
6139 | so there wouldn't be much gain. Changing the stub also keeps around a | |
6140 | record of what was there before. */ | |
6141 | stub_entry->stub_type = aarch64_stub_none; | |
6142 | ||
6143 | /* We're done and there could have been only one matching stub at that | |
6144 | particular offset, so abort further traversal. */ | |
6145 | return FALSE; | |
6146 | } | |
6147 | ||
6148 | /* TLS Relaxations may relax an adrp sequence that matches the erratum 843419 | |
6149 | sequence. In this case the erratum no longer applies and we need to remove | |
6150 | the entry from the pending stub generation. This clears matching adrp insn | |
6151 | at ADRP_OFFSET in INPUT_SECTION in the stub table defined in GLOBALS. */ | |
6152 | ||
6153 | static void | |
6154 | clear_erratum_843419_entry (struct elf_aarch64_link_hash_table *globals, | |
6155 | bfd_vma adrp_offset, asection *input_section) | |
6156 | { | |
6157 | if (globals->fix_erratum_843419) | |
6158 | { | |
6159 | struct erratum_843419_branch_to_stub_clear_data data; | |
6160 | data.adrp_offset = adrp_offset; | |
6161 | data.output_section = input_section; | |
6162 | ||
6163 | bfd_hash_traverse (&globals->stub_hash_table, | |
6164 | _bfd_aarch64_erratum_843419_clear_stub, &data); | |
6165 | } | |
6166 | } | |
6167 | ||
a06ea964 NC |
6168 | /* Handle TLS relaxations. Relaxing is possible for symbols that use |
6169 | R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static | |
6170 | link. | |
6171 | ||
6172 | Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller | |
6173 | is to then call final_link_relocate. Return other values in the | |
6174 | case of error. */ | |
6175 | ||
6176 | static bfd_reloc_status_type | |
cec5225b | 6177 | elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals, |
9fca35fc TC |
6178 | bfd *input_bfd, asection *input_section, |
6179 | bfd_byte *contents, Elf_Internal_Rela *rel, | |
6180 | struct elf_link_hash_entry *h) | |
a06ea964 NC |
6181 | { |
6182 | bfd_boolean is_local = h == NULL; | |
cec5225b | 6183 | unsigned int r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
6184 | unsigned long insn; |
6185 | ||
6186 | BFD_ASSERT (globals && input_bfd && contents && rel); | |
6187 | ||
0aa13fee | 6188 | switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type)) |
a06ea964 | 6189 | { |
a6bb11b2 | 6190 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 6191 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a06ea964 NC |
6192 | if (is_local) |
6193 | { | |
6194 | /* GD->LE relaxation: | |
2d0ca824 | 6195 | adrp x0, :tlsgd:var => movz R0, :tprel_g1:var |
a06ea964 | 6196 | or |
2d0ca824 YN |
6197 | adrp x0, :tlsdesc:var => movz R0, :tprel_g1:var |
6198 | ||
6199 | Where R is x for LP64, and w for ILP32. */ | |
6200 | bfd_putl32 (movz_R0, contents + rel->r_offset); | |
9fca35fc TC |
6201 | /* We have relaxed the adrp into a mov, we may have to clear any |
6202 | pending erratum fixes. */ | |
6203 | clear_erratum_843419_entry (globals, rel->r_offset, input_section); | |
a06ea964 NC |
6204 | return bfd_reloc_continue; |
6205 | } | |
6206 | else | |
6207 | { | |
6208 | /* GD->IE relaxation: | |
6209 | adrp x0, :tlsgd:var => adrp x0, :gottprel:var | |
6210 | or | |
6211 | adrp x0, :tlsdesc:var => adrp x0, :gottprel:var | |
6212 | */ | |
a06ea964 NC |
6213 | return bfd_reloc_continue; |
6214 | } | |
6215 | ||
389b8029 MS |
6216 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
6217 | BFD_ASSERT (0); | |
6218 | break; | |
6219 | ||
1ada945d MS |
6220 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
6221 | if (is_local) | |
6222 | { | |
6223 | /* Tiny TLSDESC->LE relaxation: | |
07d6d2b8 AM |
6224 | ldr x1, :tlsdesc:var => movz R0, #:tprel_g1:var |
6225 | adr x0, :tlsdesc:var => movk R0, #:tprel_g0_nc:var | |
1ada945d | 6226 | .tlsdesccall var |
07d6d2b8 | 6227 | blr x1 => nop |
2d0ca824 YN |
6228 | |
6229 | Where R is x for LP64, and w for ILP32. */ | |
1ada945d MS |
6230 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); |
6231 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
6232 | ||
6233 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
6234 | AARCH64_R (TLSLE_MOVW_TPREL_G0_NC)); | |
6235 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6236 | ||
2d0ca824 YN |
6237 | bfd_putl32 (movz_R0, contents + rel->r_offset); |
6238 | bfd_putl32 (movk_R0, contents + rel->r_offset + 4); | |
1ada945d MS |
6239 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); |
6240 | return bfd_reloc_continue; | |
6241 | } | |
6242 | else | |
6243 | { | |
6244 | /* Tiny TLSDESC->IE relaxation: | |
07d6d2b8 AM |
6245 | ldr x1, :tlsdesc:var => ldr x0, :gottprel:var |
6246 | adr x0, :tlsdesc:var => nop | |
1ada945d | 6247 | .tlsdesccall var |
07d6d2b8 | 6248 | blr x1 => nop |
1ada945d MS |
6249 | */ |
6250 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); | |
6251 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
6252 | ||
6253 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6254 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6255 | ||
2d0ca824 | 6256 | bfd_putl32 (ldr_R0, contents + rel->r_offset); |
1ada945d MS |
6257 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4); |
6258 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); | |
6259 | return bfd_reloc_continue; | |
6260 | } | |
6261 | ||
3c12b054 MS |
6262 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
6263 | if (is_local) | |
6264 | { | |
6265 | /* Tiny GD->LE relaxation: | |
07d6d2b8 AM |
6266 | adr x0, :tlsgd:var => mrs x1, tpidr_el0 |
6267 | bl __tls_get_addr => add R0, R1, #:tprel_hi12:x, lsl #12 | |
6268 | nop => add R0, R0, #:tprel_lo12_nc:x | |
2d0ca824 YN |
6269 | |
6270 | Where R is x for LP64, and x for Ilp32. */ | |
3c12b054 MS |
6271 | |
6272 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
6273 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6274 | ||
6275 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0); | |
2d0ca824 YN |
6276 | bfd_putl32 (add_R0_R1, contents + rel->r_offset + 4); |
6277 | bfd_putl32 (add_R0_R0, contents + rel->r_offset + 8); | |
3c12b054 MS |
6278 | |
6279 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
6280 | AARCH64_R (TLSLE_ADD_TPREL_LO12_NC)); | |
6281 | rel[1].r_offset = rel->r_offset + 8; | |
6282 | ||
6283 | /* Move the current relocation to the second instruction in | |
6284 | the sequence. */ | |
6285 | rel->r_offset += 4; | |
6286 | rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
6287 | AARCH64_R (TLSLE_ADD_TPREL_HI12)); | |
6288 | return bfd_reloc_continue; | |
6289 | } | |
6290 | else | |
6291 | { | |
6292 | /* Tiny GD->IE relaxation: | |
07d6d2b8 AM |
6293 | adr x0, :tlsgd:var => ldr R0, :gottprel:var |
6294 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6295 | nop => add R0, R0, R1 | |
2d0ca824 YN |
6296 | |
6297 | Where R is x for LP64, and w for Ilp32. */ | |
3c12b054 MS |
6298 | |
6299 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
6300 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6301 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6302 | ||
2d0ca824 | 6303 | bfd_putl32 (ldr_R0, contents + rel->r_offset); |
3c12b054 | 6304 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); |
2d0ca824 | 6305 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8); |
3c12b054 MS |
6306 | return bfd_reloc_continue; |
6307 | } | |
6308 | ||
ac734732 RL |
6309 | #if ARCH_SIZE == 64 |
6310 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: | |
6311 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSGD_MOVW_G0_NC)); | |
6312 | BFD_ASSERT (rel->r_offset + 12 == rel[2].r_offset); | |
6313 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (CALL26)); | |
6314 | ||
6315 | if (is_local) | |
6316 | { | |
6317 | /* Large GD->LE relaxation: | |
07d6d2b8 | 6318 | movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32 |
ac734732 | 6319 | movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16 |
07d6d2b8 AM |
6320 | add x0, gp, x0 => movk x0, #:tprel_g0_nc:var |
6321 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6322 | nop => add x0, x0, x1 | |
ac734732 RL |
6323 | */ |
6324 | rel[2].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
6325 | AARCH64_R (TLSLE_MOVW_TPREL_G0_NC)); | |
6326 | rel[2].r_offset = rel->r_offset + 8; | |
6327 | ||
2d0ca824 YN |
6328 | bfd_putl32 (movz_hw_R0, contents + rel->r_offset + 0); |
6329 | bfd_putl32 (ldr_hw_R0, contents + rel->r_offset + 4); | |
6330 | bfd_putl32 (movk_R0, contents + rel->r_offset + 8); | |
ac734732 | 6331 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12); |
2d0ca824 | 6332 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16); |
ac734732 RL |
6333 | } |
6334 | else | |
6335 | { | |
6336 | /* Large GD->IE relaxation: | |
07d6d2b8 | 6337 | movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16 |
ac734732 | 6338 | movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var |
07d6d2b8 AM |
6339 | add x0, gp, x0 => ldr x0, [gp, x0] |
6340 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6341 | nop => add x0, x0, x1 | |
ac734732 RL |
6342 | */ |
6343 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6344 | bfd_putl32 (0xd2a80000, contents + rel->r_offset + 0); | |
2d0ca824 | 6345 | bfd_putl32 (ldr_R0, contents + rel->r_offset + 8); |
ac734732 | 6346 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12); |
2d0ca824 | 6347 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16); |
ac734732 RL |
6348 | } |
6349 | return bfd_reloc_continue; | |
6350 | ||
6351 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: | |
6352 | return bfd_reloc_continue; | |
6353 | #endif | |
6354 | ||
043bf05a MS |
6355 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
6356 | return bfd_reloc_continue; | |
6357 | ||
a6bb11b2 | 6358 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
a06ea964 NC |
6359 | if (is_local) |
6360 | { | |
6361 | /* GD->LE relaxation: | |
6362 | ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var | |
2d0ca824 YN |
6363 | |
6364 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
6365 | bfd_putl32 (movk_R0, contents + rel->r_offset); | |
a06ea964 NC |
6366 | return bfd_reloc_continue; |
6367 | } | |
6368 | else | |
6369 | { | |
6370 | /* GD->IE relaxation: | |
2d0ca824 YN |
6371 | ldr xd, [x0, #:tlsdesc_lo12:var] => ldr R0, [x0, #:gottprel_lo12:var] |
6372 | ||
6373 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 | 6374 | insn = bfd_getl32 (contents + rel->r_offset); |
2d0ca824 | 6375 | bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset); |
a06ea964 NC |
6376 | return bfd_reloc_continue; |
6377 | } | |
6378 | ||
a6bb11b2 | 6379 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a06ea964 NC |
6380 | if (is_local) |
6381 | { | |
6382 | /* GD->LE relaxation | |
07d6d2b8 AM |
6383 | add x0, #:tlsgd_lo12:var => movk R0, :tprel_g0_nc:var |
6384 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6385 | nop => add R0, R1, R0 | |
2d0ca824 YN |
6386 | |
6387 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 NC |
6388 | |
6389 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
6390 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
cec5225b | 6391 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 | 6392 | |
2d0ca824 | 6393 | bfd_putl32 (movk_R0, contents + rel->r_offset); |
a06ea964 | 6394 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); |
2d0ca824 | 6395 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8); |
a06ea964 NC |
6396 | return bfd_reloc_continue; |
6397 | } | |
6398 | else | |
6399 | { | |
6400 | /* GD->IE relaxation | |
07d6d2b8 AM |
6401 | ADD x0, #:tlsgd_lo12:var => ldr R0, [x0, #:gottprel_lo12:var] |
6402 | BL __tls_get_addr => mrs x1, tpidr_el0 | |
a06ea964 | 6403 | R_AARCH64_CALL26 |
07d6d2b8 | 6404 | NOP => add R0, R1, R0 |
5cd1d8bc YN |
6405 | |
6406 | Where R is x for lp64 mode, and w for ilp32 mode. */ | |
a06ea964 | 6407 | |
a6bb11b2 | 6408 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); |
a06ea964 NC |
6409 | |
6410 | /* Remove the relocation on the BL instruction. */ | |
cec5225b | 6411 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 | 6412 | |
a06ea964 NC |
6413 | /* We choose to fixup the BL and NOP instructions using the |
6414 | offset from the second relocation to allow flexibility in | |
6415 | scheduling instructions between the ADD and BL. */ | |
2d0ca824 | 6416 | bfd_putl32 (ldr_R0_x0, contents + rel->r_offset); |
5cd1d8bc | 6417 | bfd_putl32 (0xd53bd041, contents + rel[1].r_offset); |
2d0ca824 | 6418 | bfd_putl32 (add_R0_R0_R1, contents + rel[1].r_offset + 4); |
a06ea964 NC |
6419 | return bfd_reloc_continue; |
6420 | } | |
6421 | ||
0484b454 | 6422 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
f955cccf | 6423 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 6424 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a06ea964 | 6425 | /* GD->IE/LE relaxation: |
07d6d2b8 AM |
6426 | add x0, x0, #:tlsdesc_lo12:var => nop |
6427 | blr xd => nop | |
a06ea964 NC |
6428 | */ |
6429 | bfd_putl32 (INSN_NOP, contents + rel->r_offset); | |
6430 | return bfd_reloc_ok; | |
6431 | ||
0484b454 RL |
6432 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
6433 | if (is_local) | |
6434 | { | |
6435 | /* GD->LE relaxation: | |
2d0ca824 YN |
6436 | ldr xd, [gp, xn] => movk R0, #:tprel_g0_nc:var |
6437 | ||
6438 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
6439 | bfd_putl32 (movk_R0, contents + rel->r_offset); | |
0484b454 RL |
6440 | return bfd_reloc_continue; |
6441 | } | |
6442 | else | |
6443 | { | |
6444 | /* GD->IE relaxation: | |
2d0ca824 YN |
6445 | ldr xd, [gp, xn] => ldr R0, [gp, xn] |
6446 | ||
6447 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
0484b454 | 6448 | insn = bfd_getl32 (contents + rel->r_offset); |
2d0ca824 | 6449 | bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset); |
0484b454 RL |
6450 | return bfd_reloc_ok; |
6451 | } | |
6452 | ||
6453 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
6454 | /* GD->LE relaxation: | |
2d0ca824 | 6455 | movk xd, #:tlsdesc_off_g0_nc:var => movk R0, #:tprel_g1_nc:var, lsl #16 |
0484b454 | 6456 | GD->IE relaxation: |
2d0ca824 YN |
6457 | movk xd, #:tlsdesc_off_g0_nc:var => movk Rd, #:gottprel_g0_nc:var |
6458 | ||
6459 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
0484b454 | 6460 | if (is_local) |
2d0ca824 | 6461 | bfd_putl32 (ldr_hw_R0, contents + rel->r_offset); |
0484b454 RL |
6462 | return bfd_reloc_continue; |
6463 | ||
6464 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
6465 | if (is_local) | |
6466 | { | |
6467 | /* GD->LE relaxation: | |
2d0ca824 YN |
6468 | movz xd, #:tlsdesc_off_g1:var => movz R0, #:tprel_g2:var, lsl #32 |
6469 | ||
6470 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
6471 | bfd_putl32 (movz_hw_R0, contents + rel->r_offset); | |
0484b454 RL |
6472 | return bfd_reloc_continue; |
6473 | } | |
6474 | else | |
6475 | { | |
6476 | /* GD->IE relaxation: | |
2d0ca824 YN |
6477 | movz xd, #:tlsdesc_off_g1:var => movz Rd, #:gottprel_g1:var, lsl #16 |
6478 | ||
6479 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
0484b454 | 6480 | insn = bfd_getl32 (contents + rel->r_offset); |
2d0ca824 | 6481 | bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset); |
0484b454 RL |
6482 | return bfd_reloc_continue; |
6483 | } | |
6484 | ||
a6bb11b2 | 6485 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a06ea964 | 6486 | /* IE->LE relaxation: |
07d6d2b8 | 6487 | adrp xd, :gottprel:var => movz Rd, :tprel_g1:var |
2d0ca824 YN |
6488 | |
6489 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 NC |
6490 | if (is_local) |
6491 | { | |
6492 | insn = bfd_getl32 (contents + rel->r_offset); | |
2d0ca824 | 6493 | bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset); |
9fca35fc TC |
6494 | /* We have relaxed the adrp into a mov, we may have to clear any |
6495 | pending erratum fixes. */ | |
6496 | clear_erratum_843419_entry (globals, rel->r_offset, input_section); | |
a06ea964 NC |
6497 | } |
6498 | return bfd_reloc_continue; | |
6499 | ||
a6bb11b2 | 6500 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: |
a06ea964 | 6501 | /* IE->LE relaxation: |
07d6d2b8 | 6502 | ldr xd, [xm, #:gottprel_lo12:var] => movk Rd, :tprel_g0_nc:var |
2d0ca824 YN |
6503 | |
6504 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 NC |
6505 | if (is_local) |
6506 | { | |
6507 | insn = bfd_getl32 (contents + rel->r_offset); | |
2d0ca824 | 6508 | bfd_putl32 (movk_R0 | (insn & 0x1f), contents + rel->r_offset); |
a06ea964 NC |
6509 | } |
6510 | return bfd_reloc_continue; | |
6511 | ||
259364ad JW |
6512 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
6513 | /* LD->LE relaxation (tiny): | |
6514 | adr x0, :tlsldm:x => mrs x0, tpidr_el0 | |
c1fc2d7e YN |
6515 | bl __tls_get_addr => add R0, R0, TCB_SIZE |
6516 | ||
6517 | Where R is x for lp64 mode, and w for ilp32 mode. */ | |
259364ad JW |
6518 | if (is_local) |
6519 | { | |
6520 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6521 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); | |
6522 | /* No need of CALL26 relocation for tls_get_addr. */ | |
6523 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6524 | bfd_putl32 (0xd53bd040, contents + rel->r_offset + 0); | |
2d0ca824 YN |
6525 | bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10), |
6526 | contents + rel->r_offset + 4); | |
259364ad JW |
6527 | return bfd_reloc_ok; |
6528 | } | |
6529 | return bfd_reloc_continue; | |
6530 | ||
6531 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: | |
6532 | /* LD->LE relaxation (small): | |
6533 | adrp x0, :tlsldm:x => mrs x0, tpidr_el0 | |
6534 | */ | |
6535 | if (is_local) | |
6536 | { | |
6537 | bfd_putl32 (0xd53bd040, contents + rel->r_offset); | |
6538 | return bfd_reloc_ok; | |
6539 | } | |
6540 | return bfd_reloc_continue; | |
6541 | ||
6542 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: | |
6543 | /* LD->LE relaxation (small): | |
c1fc2d7e | 6544 | add x0, #:tlsldm_lo12:x => add R0, R0, TCB_SIZE |
259364ad | 6545 | bl __tls_get_addr => nop |
c1fc2d7e YN |
6546 | |
6547 | Where R is x for lp64 mode, and w for ilp32 mode. */ | |
259364ad JW |
6548 | if (is_local) |
6549 | { | |
6550 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6551 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); | |
6552 | /* No need of CALL26 relocation for tls_get_addr. */ | |
6553 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
2d0ca824 YN |
6554 | bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10), |
6555 | contents + rel->r_offset + 0); | |
c1fc2d7e | 6556 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4); |
259364ad JW |
6557 | return bfd_reloc_ok; |
6558 | } | |
6559 | return bfd_reloc_continue; | |
6560 | ||
a06ea964 NC |
6561 | default: |
6562 | return bfd_reloc_continue; | |
6563 | } | |
6564 | ||
6565 | return bfd_reloc_ok; | |
6566 | } | |
6567 | ||
6568 | /* Relocate an AArch64 ELF section. */ | |
6569 | ||
6570 | static bfd_boolean | |
cec5225b | 6571 | elfNN_aarch64_relocate_section (bfd *output_bfd, |
a06ea964 NC |
6572 | struct bfd_link_info *info, |
6573 | bfd *input_bfd, | |
6574 | asection *input_section, | |
6575 | bfd_byte *contents, | |
6576 | Elf_Internal_Rela *relocs, | |
6577 | Elf_Internal_Sym *local_syms, | |
6578 | asection **local_sections) | |
6579 | { | |
6580 | Elf_Internal_Shdr *symtab_hdr; | |
6581 | struct elf_link_hash_entry **sym_hashes; | |
6582 | Elf_Internal_Rela *rel; | |
6583 | Elf_Internal_Rela *relend; | |
6584 | const char *name; | |
cec5225b | 6585 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 NC |
6586 | bfd_boolean save_addend = FALSE; |
6587 | bfd_vma addend = 0; | |
6588 | ||
cec5225b | 6589 | globals = elf_aarch64_hash_table (info); |
a06ea964 NC |
6590 | |
6591 | symtab_hdr = &elf_symtab_hdr (input_bfd); | |
6592 | sym_hashes = elf_sym_hashes (input_bfd); | |
6593 | ||
6594 | rel = relocs; | |
6595 | relend = relocs + input_section->reloc_count; | |
6596 | for (; rel < relend; rel++) | |
6597 | { | |
6598 | unsigned int r_type; | |
a6bb11b2 YZ |
6599 | bfd_reloc_code_real_type bfd_r_type; |
6600 | bfd_reloc_code_real_type relaxed_bfd_r_type; | |
a06ea964 NC |
6601 | reloc_howto_type *howto; |
6602 | unsigned long r_symndx; | |
6603 | Elf_Internal_Sym *sym; | |
6604 | asection *sec; | |
6605 | struct elf_link_hash_entry *h; | |
6606 | bfd_vma relocation; | |
6607 | bfd_reloc_status_type r; | |
6608 | arelent bfd_reloc; | |
6609 | char sym_type; | |
6610 | bfd_boolean unresolved_reloc = FALSE; | |
6611 | char *error_message = NULL; | |
6612 | ||
cec5225b YZ |
6613 | r_symndx = ELFNN_R_SYM (rel->r_info); |
6614 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 | 6615 | |
0aa13fee AM |
6616 | bfd_reloc.howto = elfNN_aarch64_howto_from_type (input_bfd, r_type); |
6617 | howto = bfd_reloc.howto; | |
a06ea964 | 6618 | |
7fcfd62d | 6619 | if (howto == NULL) |
47aeb64c NC |
6620 | return _bfd_unrecognized_reloc (input_bfd, input_section, r_type); |
6621 | ||
a6bb11b2 | 6622 | bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto); |
7fcfd62d | 6623 | |
a06ea964 NC |
6624 | h = NULL; |
6625 | sym = NULL; | |
6626 | sec = NULL; | |
6627 | ||
6628 | if (r_symndx < symtab_hdr->sh_info) | |
6629 | { | |
6630 | sym = local_syms + r_symndx; | |
cec5225b | 6631 | sym_type = ELFNN_ST_TYPE (sym->st_info); |
a06ea964 NC |
6632 | sec = local_sections[r_symndx]; |
6633 | ||
6634 | /* An object file might have a reference to a local | |
6635 | undefined symbol. This is a daft object file, but we | |
6636 | should at least do something about it. */ | |
6637 | if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL | |
6638 | && bfd_is_und_section (sec) | |
6639 | && ELF_ST_BIND (sym->st_info) != STB_WEAK) | |
1a72702b AM |
6640 | (*info->callbacks->undefined_symbol) |
6641 | (info, bfd_elf_string_from_elf_section | |
6642 | (input_bfd, symtab_hdr->sh_link, sym->st_name), | |
6643 | input_bfd, input_section, rel->r_offset, TRUE); | |
a06ea964 | 6644 | |
a06ea964 | 6645 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
1419bbe5 WN |
6646 | |
6647 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
0e1862bb | 6648 | if (!bfd_link_relocatable (info) |
1419bbe5 WN |
6649 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
6650 | { | |
6651 | h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd, | |
6652 | rel, FALSE); | |
6653 | if (h == NULL) | |
6654 | abort (); | |
6655 | ||
6656 | /* Set STT_GNU_IFUNC symbol value. */ | |
6657 | h->root.u.def.value = sym->st_value; | |
6658 | h->root.u.def.section = sec; | |
6659 | } | |
a06ea964 NC |
6660 | } |
6661 | else | |
6662 | { | |
62d887d4 | 6663 | bfd_boolean warned, ignored; |
a06ea964 NC |
6664 | |
6665 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
6666 | r_symndx, symtab_hdr, sym_hashes, | |
6667 | h, sec, relocation, | |
62d887d4 | 6668 | unresolved_reloc, warned, ignored); |
a06ea964 NC |
6669 | |
6670 | sym_type = h->type; | |
6671 | } | |
6672 | ||
6673 | if (sec != NULL && discarded_section (sec)) | |
6674 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
6675 | rel, 1, relend, howto, 0, contents); | |
6676 | ||
0e1862bb | 6677 | if (bfd_link_relocatable (info)) |
2e0488d3 | 6678 | continue; |
a06ea964 NC |
6679 | |
6680 | if (h != NULL) | |
6681 | name = h->root.root.string; | |
6682 | else | |
6683 | { | |
6684 | name = (bfd_elf_string_from_elf_section | |
6685 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
6686 | if (name == NULL || *name == '\0') | |
6687 | name = bfd_section_name (input_bfd, sec); | |
6688 | } | |
6689 | ||
6690 | if (r_symndx != 0 | |
6691 | && r_type != R_AARCH64_NONE | |
6692 | && r_type != R_AARCH64_NULL | |
6693 | && (h == NULL | |
6694 | || h->root.type == bfd_link_hash_defined | |
6695 | || h->root.type == bfd_link_hash_defweak) | |
a6bb11b2 | 6696 | && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS)) |
a06ea964 | 6697 | { |
4eca0228 | 6698 | _bfd_error_handler |
a06ea964 | 6699 | ((sym_type == STT_TLS |
695344c0 | 6700 | /* xgettext:c-format */ |
2dcf00ce | 6701 | ? _("%pB(%pA+%#" PRIx64 "): %s used with TLS symbol %s") |
695344c0 | 6702 | /* xgettext:c-format */ |
2dcf00ce | 6703 | : _("%pB(%pA+%#" PRIx64 "): %s used with non-TLS symbol %s")), |
a06ea964 | 6704 | input_bfd, |
2dcf00ce | 6705 | input_section, (uint64_t) rel->r_offset, howto->name, name); |
a06ea964 NC |
6706 | } |
6707 | ||
a06ea964 | 6708 | /* We relax only if we can see that there can be a valid transition |
07d6d2b8 AM |
6709 | from a reloc type to another. |
6710 | We call elfNN_aarch64_final_link_relocate unless we're completely | |
6711 | done, i.e., the relaxation produced the final output we want. */ | |
a06ea964 | 6712 | |
a6bb11b2 YZ |
6713 | relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, |
6714 | h, r_symndx); | |
6715 | if (relaxed_bfd_r_type != bfd_r_type) | |
a06ea964 | 6716 | { |
a6bb11b2 YZ |
6717 | bfd_r_type = relaxed_bfd_r_type; |
6718 | howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type); | |
6719 | BFD_ASSERT (howto != NULL); | |
6720 | r_type = howto->type; | |
9fca35fc TC |
6721 | r = elfNN_aarch64_tls_relax (globals, input_bfd, input_section, |
6722 | contents, rel, h); | |
a06ea964 NC |
6723 | unresolved_reloc = 0; |
6724 | } | |
6725 | else | |
6726 | r = bfd_reloc_continue; | |
6727 | ||
6728 | /* There may be multiple consecutive relocations for the | |
07d6d2b8 AM |
6729 | same offset. In that case we are supposed to treat the |
6730 | output of each relocation as the addend for the next. */ | |
a06ea964 NC |
6731 | if (rel + 1 < relend |
6732 | && rel->r_offset == rel[1].r_offset | |
cec5225b YZ |
6733 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE |
6734 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL) | |
a06ea964 NC |
6735 | save_addend = TRUE; |
6736 | else | |
6737 | save_addend = FALSE; | |
6738 | ||
6739 | if (r == bfd_reloc_continue) | |
cec5225b | 6740 | r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd, |
a06ea964 NC |
6741 | input_section, contents, rel, |
6742 | relocation, info, sec, | |
6743 | h, &unresolved_reloc, | |
1419bbe5 | 6744 | save_addend, &addend, sym); |
a06ea964 | 6745 | |
0aa13fee | 6746 | switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type)) |
a06ea964 | 6747 | { |
ce336788 | 6748 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 6749 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 6750 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 6751 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 6752 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
73f925cc | 6753 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 6754 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 6755 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
6756 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
6757 | { | |
6758 | bfd_boolean need_relocs = FALSE; | |
6759 | bfd_byte *loc; | |
6760 | int indx; | |
6761 | bfd_vma off; | |
6762 | ||
6763 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
6764 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
6765 | ||
6766 | need_relocs = | |
6dda7875 | 6767 | (!bfd_link_executable (info) || indx != 0) && |
a06ea964 NC |
6768 | (h == NULL |
6769 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6770 | || h->root.type != bfd_link_hash_undefweak); | |
6771 | ||
6772 | BFD_ASSERT (globals->root.srelgot != NULL); | |
6773 | ||
6774 | if (need_relocs) | |
6775 | { | |
6776 | Elf_Internal_Rela rela; | |
a6bb11b2 | 6777 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD)); |
a06ea964 NC |
6778 | rela.r_addend = 0; |
6779 | rela.r_offset = globals->root.sgot->output_section->vma + | |
6780 | globals->root.sgot->output_offset + off; | |
6781 | ||
6782 | ||
6783 | loc = globals->root.srelgot->contents; | |
6784 | loc += globals->root.srelgot->reloc_count++ | |
6785 | * RELOC_SIZE (htab); | |
cec5225b | 6786 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 6787 | |
f69e4920 | 6788 | bfd_reloc_code_real_type real_type = |
0aa13fee | 6789 | elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
f69e4920 JW |
6790 | |
6791 | if (real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 | |
73f925cc JW |
6792 | || real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 |
6793 | || real_type == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC) | |
77a69ff8 JW |
6794 | { |
6795 | /* For local dynamic, don't generate DTPREL in any case. | |
6796 | Initialize the DTPREL slot into zero, so we get module | |
6797 | base address when invoke runtime TLS resolver. */ | |
6798 | bfd_put_NN (output_bfd, 0, | |
6799 | globals->root.sgot->contents + off | |
6800 | + GOT_ENTRY_SIZE); | |
6801 | } | |
6802 | else if (indx == 0) | |
a06ea964 | 6803 | { |
cec5225b | 6804 | bfd_put_NN (output_bfd, |
a06ea964 NC |
6805 | relocation - dtpoff_base (info), |
6806 | globals->root.sgot->contents + off | |
6807 | + GOT_ENTRY_SIZE); | |
6808 | } | |
6809 | else | |
6810 | { | |
6811 | /* This TLS symbol is global. We emit a | |
6812 | relocation to fixup the tls offset at load | |
6813 | time. */ | |
6814 | rela.r_info = | |
a6bb11b2 | 6815 | ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL)); |
a06ea964 NC |
6816 | rela.r_addend = 0; |
6817 | rela.r_offset = | |
6818 | (globals->root.sgot->output_section->vma | |
6819 | + globals->root.sgot->output_offset + off | |
6820 | + GOT_ENTRY_SIZE); | |
6821 | ||
6822 | loc = globals->root.srelgot->contents; | |
6823 | loc += globals->root.srelgot->reloc_count++ | |
6824 | * RELOC_SIZE (globals); | |
cec5225b YZ |
6825 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
6826 | bfd_put_NN (output_bfd, (bfd_vma) 0, | |
a06ea964 NC |
6827 | globals->root.sgot->contents + off |
6828 | + GOT_ENTRY_SIZE); | |
6829 | } | |
6830 | } | |
6831 | else | |
6832 | { | |
cec5225b | 6833 | bfd_put_NN (output_bfd, (bfd_vma) 1, |
a06ea964 | 6834 | globals->root.sgot->contents + off); |
cec5225b | 6835 | bfd_put_NN (output_bfd, |
a06ea964 NC |
6836 | relocation - dtpoff_base (info), |
6837 | globals->root.sgot->contents + off | |
6838 | + GOT_ENTRY_SIZE); | |
6839 | } | |
6840 | ||
6841 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
6842 | } | |
6843 | break; | |
6844 | ||
a6bb11b2 YZ |
6845 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
6846 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
043bf05a | 6847 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
6848 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
6849 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
a06ea964 NC |
6850 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
6851 | { | |
6852 | bfd_boolean need_relocs = FALSE; | |
6853 | bfd_byte *loc; | |
6854 | int indx; | |
6855 | bfd_vma off; | |
6856 | ||
6857 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
6858 | ||
6859 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
6860 | ||
6861 | need_relocs = | |
6dda7875 | 6862 | (!bfd_link_executable (info) || indx != 0) && |
a06ea964 NC |
6863 | (h == NULL |
6864 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6865 | || h->root.type != bfd_link_hash_undefweak); | |
6866 | ||
6867 | BFD_ASSERT (globals->root.srelgot != NULL); | |
6868 | ||
6869 | if (need_relocs) | |
6870 | { | |
6871 | Elf_Internal_Rela rela; | |
6872 | ||
6873 | if (indx == 0) | |
6874 | rela.r_addend = relocation - dtpoff_base (info); | |
6875 | else | |
6876 | rela.r_addend = 0; | |
6877 | ||
a6bb11b2 | 6878 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL)); |
a06ea964 NC |
6879 | rela.r_offset = globals->root.sgot->output_section->vma + |
6880 | globals->root.sgot->output_offset + off; | |
6881 | ||
6882 | loc = globals->root.srelgot->contents; | |
6883 | loc += globals->root.srelgot->reloc_count++ | |
6884 | * RELOC_SIZE (htab); | |
6885 | ||
cec5225b | 6886 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 6887 | |
cec5225b | 6888 | bfd_put_NN (output_bfd, rela.r_addend, |
a06ea964 NC |
6889 | globals->root.sgot->contents + off); |
6890 | } | |
6891 | else | |
cec5225b | 6892 | bfd_put_NN (output_bfd, relocation - tpoff_base (info), |
a06ea964 NC |
6893 | globals->root.sgot->contents + off); |
6894 | ||
6895 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
6896 | } | |
6897 | break; | |
6898 | ||
f955cccf | 6899 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 6900 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 6901 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 6902 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
1ada945d | 6903 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
6904 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
6905 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a06ea964 NC |
6906 | if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx)) |
6907 | { | |
6908 | bfd_boolean need_relocs = FALSE; | |
6909 | int indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
6910 | bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx); | |
6911 | ||
6912 | need_relocs = (h == NULL | |
6913 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6914 | || h->root.type != bfd_link_hash_undefweak); | |
6915 | ||
6916 | BFD_ASSERT (globals->root.srelgot != NULL); | |
6917 | BFD_ASSERT (globals->root.sgot != NULL); | |
6918 | ||
6919 | if (need_relocs) | |
6920 | { | |
6921 | bfd_byte *loc; | |
6922 | Elf_Internal_Rela rela; | |
a6bb11b2 YZ |
6923 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC)); |
6924 | ||
a06ea964 NC |
6925 | rela.r_addend = 0; |
6926 | rela.r_offset = (globals->root.sgotplt->output_section->vma | |
6927 | + globals->root.sgotplt->output_offset | |
6928 | + off + globals->sgotplt_jump_table_size); | |
6929 | ||
6930 | if (indx == 0) | |
6931 | rela.r_addend = relocation - dtpoff_base (info); | |
6932 | ||
6933 | /* Allocate the next available slot in the PLT reloc | |
6934 | section to hold our R_AARCH64_TLSDESC, the next | |
6935 | available slot is determined from reloc_count, | |
6936 | which we step. But note, reloc_count was | |
6937 | artifically moved down while allocating slots for | |
6938 | real PLT relocs such that all of the PLT relocs | |
6939 | will fit above the initial reloc_count and the | |
6940 | extra stuff will fit below. */ | |
6941 | loc = globals->root.srelplt->contents; | |
6942 | loc += globals->root.srelplt->reloc_count++ | |
6943 | * RELOC_SIZE (globals); | |
6944 | ||
cec5225b | 6945 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 6946 | |
cec5225b | 6947 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
6948 | globals->root.sgotplt->contents + off + |
6949 | globals->sgotplt_jump_table_size); | |
cec5225b | 6950 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
6951 | globals->root.sgotplt->contents + off + |
6952 | globals->sgotplt_jump_table_size + | |
6953 | GOT_ENTRY_SIZE); | |
6954 | } | |
6955 | ||
6956 | symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx); | |
6957 | } | |
6958 | break; | |
a6bb11b2 YZ |
6959 | default: |
6960 | break; | |
a06ea964 NC |
6961 | } |
6962 | ||
a06ea964 | 6963 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
07d6d2b8 AM |
6964 | because such sections are not SEC_ALLOC and thus ld.so will |
6965 | not process them. */ | |
a06ea964 NC |
6966 | if (unresolved_reloc |
6967 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
6968 | && h->def_dynamic) | |
6969 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
6970 | +rel->r_offset) != (bfd_vma) - 1) | |
6971 | { | |
4eca0228 | 6972 | _bfd_error_handler |
695344c0 | 6973 | /* xgettext:c-format */ |
2dcf00ce AM |
6974 | (_("%pB(%pA+%#" PRIx64 "): " |
6975 | "unresolvable %s relocation against symbol `%s'"), | |
6976 | input_bfd, input_section, (uint64_t) rel->r_offset, howto->name, | |
a06ea964 NC |
6977 | h->root.root.string); |
6978 | return FALSE; | |
6979 | } | |
6980 | ||
6981 | if (r != bfd_reloc_ok && r != bfd_reloc_continue) | |
6982 | { | |
c674f5cd | 6983 | bfd_reloc_code_real_type real_r_type |
0aa13fee | 6984 | = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
c674f5cd | 6985 | |
a06ea964 NC |
6986 | switch (r) |
6987 | { | |
6988 | case bfd_reloc_overflow: | |
1a72702b AM |
6989 | (*info->callbacks->reloc_overflow) |
6990 | (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, | |
6991 | input_bfd, input_section, rel->r_offset); | |
c674f5cd JW |
6992 | if (real_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
6993 | || real_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
6994 | { | |
6995 | (*info->callbacks->warning) | |
6996 | (info, | |
90b6238f | 6997 | _("too many GOT entries for -fpic, " |
c674f5cd JW |
6998 | "please recompile with -fPIC"), |
6999 | name, input_bfd, input_section, rel->r_offset); | |
7000 | return FALSE; | |
7001 | } | |
027e9c75 NC |
7002 | /* Overflow can occur when a variable is referenced with a type |
7003 | that has a larger alignment than the type with which it was | |
7004 | declared. eg: | |
7005 | file1.c: extern int foo; int a (void) { return foo; } | |
7006 | file2.c: char bar, foo, baz; | |
7007 | If the variable is placed into a data section at an offset | |
7008 | that is incompatible with the larger alignment requirement | |
7009 | overflow will occur. (Strictly speaking this is not overflow | |
7010 | but rather an alignment problem, but the bfd_reloc_ error | |
7011 | enum does not have a value to cover that situation). | |
7012 | ||
7013 | Try to catch this situation here and provide a more helpful | |
7014 | error message to the user. */ | |
7015 | if (addend & ((1 << howto->rightshift) - 1) | |
7016 | /* FIXME: Are we testing all of the appropriate reloc | |
7017 | types here ? */ | |
7018 | && (real_r_type == BFD_RELOC_AARCH64_LD_LO19_PCREL | |
7019 | || real_r_type == BFD_RELOC_AARCH64_LDST16_LO12 | |
7020 | || real_r_type == BFD_RELOC_AARCH64_LDST32_LO12 | |
7021 | || real_r_type == BFD_RELOC_AARCH64_LDST64_LO12 | |
7022 | || real_r_type == BFD_RELOC_AARCH64_LDST128_LO12)) | |
7023 | { | |
7024 | info->callbacks->warning | |
90b6238f | 7025 | (info, _("one possible cause of this error is that the \ |
027e9c75 | 7026 | symbol is being referenced in the indicated code as if it had a larger \ |
90b6238f | 7027 | alignment than was declared where it was defined"), |
027e9c75 NC |
7028 | name, input_bfd, input_section, rel->r_offset); |
7029 | } | |
a06ea964 NC |
7030 | break; |
7031 | ||
7032 | case bfd_reloc_undefined: | |
1a72702b AM |
7033 | (*info->callbacks->undefined_symbol) |
7034 | (info, name, input_bfd, input_section, rel->r_offset, TRUE); | |
a06ea964 NC |
7035 | break; |
7036 | ||
7037 | case bfd_reloc_outofrange: | |
7038 | error_message = _("out of range"); | |
7039 | goto common_error; | |
7040 | ||
7041 | case bfd_reloc_notsupported: | |
7042 | error_message = _("unsupported relocation"); | |
7043 | goto common_error; | |
7044 | ||
7045 | case bfd_reloc_dangerous: | |
7046 | /* error_message should already be set. */ | |
7047 | goto common_error; | |
7048 | ||
7049 | default: | |
7050 | error_message = _("unknown error"); | |
7051 | /* Fall through. */ | |
7052 | ||
7053 | common_error: | |
7054 | BFD_ASSERT (error_message != NULL); | |
1a72702b AM |
7055 | (*info->callbacks->reloc_dangerous) |
7056 | (info, error_message, input_bfd, input_section, rel->r_offset); | |
a06ea964 NC |
7057 | break; |
7058 | } | |
7059 | } | |
027e9c75 NC |
7060 | |
7061 | if (!save_addend) | |
7062 | addend = 0; | |
a06ea964 NC |
7063 | } |
7064 | ||
7065 | return TRUE; | |
7066 | } | |
7067 | ||
7068 | /* Set the right machine number. */ | |
7069 | ||
7070 | static bfd_boolean | |
cec5225b | 7071 | elfNN_aarch64_object_p (bfd *abfd) |
a06ea964 | 7072 | { |
cec5225b YZ |
7073 | #if ARCH_SIZE == 32 |
7074 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32); | |
7075 | #else | |
a06ea964 | 7076 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64); |
cec5225b | 7077 | #endif |
a06ea964 NC |
7078 | return TRUE; |
7079 | } | |
7080 | ||
7081 | /* Function to keep AArch64 specific flags in the ELF header. */ | |
7082 | ||
7083 | static bfd_boolean | |
cec5225b | 7084 | elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags) |
a06ea964 NC |
7085 | { |
7086 | if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags) | |
7087 | { | |
7088 | } | |
7089 | else | |
7090 | { | |
7091 | elf_elfheader (abfd)->e_flags = flags; | |
7092 | elf_flags_init (abfd) = TRUE; | |
7093 | } | |
7094 | ||
7095 | return TRUE; | |
7096 | } | |
7097 | ||
a06ea964 NC |
7098 | /* Merge backend specific data from an object file to the output |
7099 | object file when linking. */ | |
7100 | ||
7101 | static bfd_boolean | |
50e03d47 | 7102 | elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
a06ea964 | 7103 | { |
50e03d47 | 7104 | bfd *obfd = info->output_bfd; |
a06ea964 NC |
7105 | flagword out_flags; |
7106 | flagword in_flags; | |
7107 | bfd_boolean flags_compatible = TRUE; | |
7108 | asection *sec; | |
7109 | ||
7110 | /* Check if we have the same endianess. */ | |
50e03d47 | 7111 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
a06ea964 NC |
7112 | return FALSE; |
7113 | ||
7114 | if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd)) | |
7115 | return TRUE; | |
7116 | ||
7117 | /* The input BFD must have had its flags initialised. */ | |
7118 | /* The following seems bogus to me -- The flags are initialized in | |
7119 | the assembler but I don't think an elf_flags_init field is | |
7120 | written into the object. */ | |
7121 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ | |
7122 | ||
7123 | in_flags = elf_elfheader (ibfd)->e_flags; | |
7124 | out_flags = elf_elfheader (obfd)->e_flags; | |
7125 | ||
7126 | if (!elf_flags_init (obfd)) | |
7127 | { | |
7128 | /* If the input is the default architecture and had the default | |
07d6d2b8 AM |
7129 | flags then do not bother setting the flags for the output |
7130 | architecture, instead allow future merges to do this. If no | |
7131 | future merges ever set these flags then they will retain their | |
7132 | uninitialised values, which surprise surprise, correspond | |
7133 | to the default values. */ | |
a06ea964 NC |
7134 | if (bfd_get_arch_info (ibfd)->the_default |
7135 | && elf_elfheader (ibfd)->e_flags == 0) | |
7136 | return TRUE; | |
7137 | ||
7138 | elf_flags_init (obfd) = TRUE; | |
7139 | elf_elfheader (obfd)->e_flags = in_flags; | |
7140 | ||
7141 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
7142 | && bfd_get_arch_info (obfd)->the_default) | |
7143 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
7144 | bfd_get_mach (ibfd)); | |
7145 | ||
7146 | return TRUE; | |
7147 | } | |
7148 | ||
7149 | /* Identical flags must be compatible. */ | |
7150 | if (in_flags == out_flags) | |
7151 | return TRUE; | |
7152 | ||
7153 | /* Check to see if the input BFD actually contains any sections. If | |
7154 | not, its flags may not have been initialised either, but it | |
7155 | cannot actually cause any incompatiblity. Do not short-circuit | |
7156 | dynamic objects; their section list may be emptied by | |
7157 | elf_link_add_object_symbols. | |
7158 | ||
7159 | Also check to see if there are no code sections in the input. | |
7160 | In this case there is no need to check for code specific flags. | |
7161 | XXX - do we need to worry about floating-point format compatability | |
7162 | in data sections ? */ | |
7163 | if (!(ibfd->flags & DYNAMIC)) | |
7164 | { | |
7165 | bfd_boolean null_input_bfd = TRUE; | |
7166 | bfd_boolean only_data_sections = TRUE; | |
7167 | ||
7168 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7169 | { | |
7170 | if ((bfd_get_section_flags (ibfd, sec) | |
7171 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
7172 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
7173 | only_data_sections = FALSE; | |
7174 | ||
7175 | null_input_bfd = FALSE; | |
7176 | break; | |
7177 | } | |
7178 | ||
7179 | if (null_input_bfd || only_data_sections) | |
7180 | return TRUE; | |
7181 | } | |
7182 | ||
7183 | return flags_compatible; | |
7184 | } | |
7185 | ||
7186 | /* Display the flags field. */ | |
7187 | ||
7188 | static bfd_boolean | |
cec5225b | 7189 | elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr) |
a06ea964 NC |
7190 | { |
7191 | FILE *file = (FILE *) ptr; | |
7192 | unsigned long flags; | |
7193 | ||
7194 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
7195 | ||
7196 | /* Print normal ELF private data. */ | |
7197 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
7198 | ||
7199 | flags = elf_elfheader (abfd)->e_flags; | |
7200 | /* Ignore init flag - it may not be set, despite the flags field | |
7201 | containing valid data. */ | |
7202 | ||
7203 | /* xgettext:c-format */ | |
7204 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
7205 | ||
7206 | if (flags) | |
7207 | fprintf (file, _("<Unrecognised flag bits set>")); | |
7208 | ||
7209 | fputc ('\n', file); | |
7210 | ||
7211 | return TRUE; | |
7212 | } | |
7213 | ||
63c1f59d AM |
7214 | /* Find dynamic relocs for H that apply to read-only sections. */ |
7215 | ||
7216 | static asection * | |
7217 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
7218 | { | |
7219 | struct elf_dyn_relocs *p; | |
7220 | ||
7221 | for (p = elf_aarch64_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
7222 | { | |
7223 | asection *s = p->sec->output_section; | |
7224 | ||
7225 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7226 | return p->sec; | |
7227 | } | |
7228 | return NULL; | |
7229 | } | |
7230 | ||
6353d82b JW |
7231 | /* Return true if we need copy relocation against EH. */ |
7232 | ||
7233 | static bfd_boolean | |
7234 | need_copy_relocation_p (struct elf_aarch64_link_hash_entry *eh) | |
7235 | { | |
7236 | struct elf_dyn_relocs *p; | |
7237 | asection *s; | |
7238 | ||
7239 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7240 | { | |
7241 | /* If there is any pc-relative reference, we need to keep copy relocation | |
7242 | to avoid propagating the relocation into runtime that current glibc | |
7243 | does not support. */ | |
7244 | if (p->pc_count) | |
7245 | return TRUE; | |
7246 | ||
7247 | s = p->sec->output_section; | |
7248 | /* Need copy relocation if it's against read-only section. */ | |
7249 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7250 | return TRUE; | |
7251 | } | |
7252 | ||
7253 | return FALSE; | |
7254 | } | |
7255 | ||
a06ea964 NC |
7256 | /* Adjust a symbol defined by a dynamic object and referenced by a |
7257 | regular object. The current definition is in some section of the | |
7258 | dynamic object, but we're not including those sections. We have to | |
7259 | change the definition to something the rest of the link can | |
7260 | understand. */ | |
7261 | ||
7262 | static bfd_boolean | |
cec5225b | 7263 | elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info, |
a06ea964 NC |
7264 | struct elf_link_hash_entry *h) |
7265 | { | |
cec5225b | 7266 | struct elf_aarch64_link_hash_table *htab; |
5474d94f | 7267 | asection *s, *srel; |
a06ea964 NC |
7268 | |
7269 | /* If this is a function, put it in the procedure linkage table. We | |
7270 | will fill in the contents of the procedure linkage table later, | |
7271 | when we know the address of the .got section. */ | |
1419bbe5 | 7272 | if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt) |
a06ea964 NC |
7273 | { |
7274 | if (h->plt.refcount <= 0 | |
1419bbe5 WN |
7275 | || (h->type != STT_GNU_IFUNC |
7276 | && (SYMBOL_CALLS_LOCAL (info, h) | |
7277 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
7278 | && h->root.type == bfd_link_hash_undefweak)))) | |
a06ea964 NC |
7279 | { |
7280 | /* This case can occur if we saw a CALL26 reloc in | |
7281 | an input file, but the symbol wasn't referred to | |
7282 | by a dynamic object or all references were | |
7283 | garbage collected. In which case we can end up | |
7284 | resolving. */ | |
7285 | h->plt.offset = (bfd_vma) - 1; | |
7286 | h->needs_plt = 0; | |
7287 | } | |
7288 | ||
7289 | return TRUE; | |
7290 | } | |
7291 | else | |
80de0c6d | 7292 | /* Otherwise, reset to -1. */ |
a06ea964 NC |
7293 | h->plt.offset = (bfd_vma) - 1; |
7294 | ||
7295 | ||
7296 | /* If this is a weak symbol, and there is a real definition, the | |
7297 | processor independent code will have arranged for us to see the | |
7298 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 7299 | if (h->is_weakalias) |
a06ea964 | 7300 | { |
60d67dc8 AM |
7301 | struct elf_link_hash_entry *def = weakdef (h); |
7302 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
7303 | h->root.u.def.section = def->root.u.def.section; | |
7304 | h->root.u.def.value = def->root.u.def.value; | |
a06ea964 | 7305 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
60d67dc8 | 7306 | h->non_got_ref = def->non_got_ref; |
a06ea964 NC |
7307 | return TRUE; |
7308 | } | |
7309 | ||
7310 | /* If we are creating a shared library, we must presume that the | |
7311 | only references to the symbol are via the global offset table. | |
7312 | For such cases we need not do anything here; the relocations will | |
7313 | be handled correctly by relocate_section. */ | |
0e1862bb | 7314 | if (bfd_link_pic (info)) |
a06ea964 NC |
7315 | return TRUE; |
7316 | ||
7317 | /* If there are no references to this symbol that do not use the | |
7318 | GOT, we don't need to generate a copy reloc. */ | |
7319 | if (!h->non_got_ref) | |
7320 | return TRUE; | |
7321 | ||
7322 | /* If -z nocopyreloc was given, we won't generate them either. */ | |
7323 | if (info->nocopyreloc) | |
7324 | { | |
7325 | h->non_got_ref = 0; | |
7326 | return TRUE; | |
7327 | } | |
7328 | ||
6353d82b JW |
7329 | if (ELIMINATE_COPY_RELOCS) |
7330 | { | |
7331 | struct elf_aarch64_link_hash_entry *eh; | |
dce2246a | 7332 | /* If we don't find any dynamic relocs in read-only sections, then |
6353d82b JW |
7333 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
7334 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
7335 | if (!need_copy_relocation_p (eh)) | |
7336 | { | |
7337 | h->non_got_ref = 0; | |
7338 | return TRUE; | |
7339 | } | |
7340 | } | |
7341 | ||
a06ea964 NC |
7342 | /* We must allocate the symbol in our .dynbss section, which will |
7343 | become part of the .bss section of the executable. There will be | |
7344 | an entry for this symbol in the .dynsym section. The dynamic | |
7345 | object will contain position independent code, so all references | |
7346 | from the dynamic object to this symbol will go through the global | |
7347 | offset table. The dynamic linker will use the .dynsym entry to | |
7348 | determine the address it must put in the global offset table, so | |
7349 | both the dynamic object and the regular object will refer to the | |
7350 | same memory location for the variable. */ | |
7351 | ||
cec5225b | 7352 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7353 | |
7354 | /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker | |
7355 | to copy the initial value out of the dynamic object and into the | |
7356 | runtime process image. */ | |
5474d94f AM |
7357 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
7358 | { | |
7359 | s = htab->root.sdynrelro; | |
7360 | srel = htab->root.sreldynrelro; | |
7361 | } | |
7362 | else | |
7363 | { | |
7364 | s = htab->root.sdynbss; | |
7365 | srel = htab->root.srelbss; | |
7366 | } | |
a06ea964 NC |
7367 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
7368 | { | |
5474d94f | 7369 | srel->size += RELOC_SIZE (htab); |
a06ea964 NC |
7370 | h->needs_copy = 1; |
7371 | } | |
7372 | ||
6cabe1ea | 7373 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
a06ea964 NC |
7374 | |
7375 | } | |
7376 | ||
7377 | static bfd_boolean | |
cec5225b | 7378 | elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number) |
a06ea964 NC |
7379 | { |
7380 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 7381 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
7382 | if (locals == NULL) |
7383 | { | |
7384 | locals = (struct elf_aarch64_local_symbol *) | |
7385 | bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol)); | |
7386 | if (locals == NULL) | |
7387 | return FALSE; | |
cec5225b | 7388 | elf_aarch64_locals (abfd) = locals; |
a06ea964 NC |
7389 | } |
7390 | return TRUE; | |
7391 | } | |
7392 | ||
cc0efaa8 MS |
7393 | /* Create the .got section to hold the global offset table. */ |
7394 | ||
7395 | static bfd_boolean | |
7396 | aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) | |
7397 | { | |
7398 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7399 | flagword flags; | |
7400 | asection *s; | |
7401 | struct elf_link_hash_entry *h; | |
7402 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
7403 | ||
7404 | /* This function may be called more than once. */ | |
ce558b89 | 7405 | if (htab->sgot != NULL) |
cc0efaa8 MS |
7406 | return TRUE; |
7407 | ||
7408 | flags = bed->dynamic_sec_flags; | |
7409 | ||
7410 | s = bfd_make_section_anyway_with_flags (abfd, | |
7411 | (bed->rela_plts_and_copies_p | |
7412 | ? ".rela.got" : ".rel.got"), | |
7413 | (bed->dynamic_sec_flags | |
7414 | | SEC_READONLY)); | |
7415 | if (s == NULL | |
7416 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
7417 | return FALSE; | |
7418 | htab->srelgot = s; | |
7419 | ||
7420 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); | |
7421 | if (s == NULL | |
7422 | || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
7423 | return FALSE; | |
7424 | htab->sgot = s; | |
7425 | htab->sgot->size += GOT_ENTRY_SIZE; | |
7426 | ||
7427 | if (bed->want_got_sym) | |
7428 | { | |
7429 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
7430 | (or .got.plt) section. We don't do this in the linker script | |
7431 | because we don't want to define the symbol if we are not creating | |
7432 | a global offset table. */ | |
7433 | h = _bfd_elf_define_linkage_sym (abfd, info, s, | |
7434 | "_GLOBAL_OFFSET_TABLE_"); | |
7435 | elf_hash_table (info)->hgot = h; | |
7436 | if (h == NULL) | |
7437 | return FALSE; | |
7438 | } | |
7439 | ||
7440 | if (bed->want_got_plt) | |
7441 | { | |
7442 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); | |
7443 | if (s == NULL | |
7444 | || !bfd_set_section_alignment (abfd, s, | |
7445 | bed->s->log_file_align)) | |
7446 | return FALSE; | |
7447 | htab->sgotplt = s; | |
7448 | } | |
7449 | ||
7450 | /* The first bit of the global offset table is the header. */ | |
7451 | s->size += bed->got_header_size; | |
7452 | ||
7453 | return TRUE; | |
7454 | } | |
7455 | ||
a06ea964 NC |
7456 | /* Look through the relocs for a section during the first phase. */ |
7457 | ||
7458 | static bfd_boolean | |
cec5225b | 7459 | elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
a06ea964 NC |
7460 | asection *sec, const Elf_Internal_Rela *relocs) |
7461 | { | |
7462 | Elf_Internal_Shdr *symtab_hdr; | |
7463 | struct elf_link_hash_entry **sym_hashes; | |
7464 | const Elf_Internal_Rela *rel; | |
7465 | const Elf_Internal_Rela *rel_end; | |
7466 | asection *sreloc; | |
7467 | ||
cec5225b | 7468 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 7469 | |
0e1862bb | 7470 | if (bfd_link_relocatable (info)) |
a06ea964 NC |
7471 | return TRUE; |
7472 | ||
7473 | BFD_ASSERT (is_aarch64_elf (abfd)); | |
7474 | ||
cec5225b | 7475 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7476 | sreloc = NULL; |
7477 | ||
7478 | symtab_hdr = &elf_symtab_hdr (abfd); | |
7479 | sym_hashes = elf_sym_hashes (abfd); | |
a06ea964 NC |
7480 | |
7481 | rel_end = relocs + sec->reloc_count; | |
7482 | for (rel = relocs; rel < rel_end; rel++) | |
7483 | { | |
7484 | struct elf_link_hash_entry *h; | |
d42c267e | 7485 | unsigned int r_symndx; |
a06ea964 | 7486 | unsigned int r_type; |
a6bb11b2 | 7487 | bfd_reloc_code_real_type bfd_r_type; |
1419bbe5 | 7488 | Elf_Internal_Sym *isym; |
a06ea964 | 7489 | |
cec5225b YZ |
7490 | r_symndx = ELFNN_R_SYM (rel->r_info); |
7491 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 NC |
7492 | |
7493 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
7494 | { | |
695344c0 | 7495 | /* xgettext:c-format */ |
871b3ab2 | 7496 | _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd, r_symndx); |
a06ea964 NC |
7497 | return FALSE; |
7498 | } | |
7499 | ||
ed5acf27 | 7500 | if (r_symndx < symtab_hdr->sh_info) |
1419bbe5 WN |
7501 | { |
7502 | /* A local symbol. */ | |
7503 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
7504 | abfd, r_symndx); | |
7505 | if (isym == NULL) | |
7506 | return FALSE; | |
7507 | ||
7508 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
7509 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
7510 | { | |
7511 | h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, | |
7512 | TRUE); | |
7513 | if (h == NULL) | |
7514 | return FALSE; | |
7515 | ||
7516 | /* Fake a STT_GNU_IFUNC symbol. */ | |
7517 | h->type = STT_GNU_IFUNC; | |
7518 | h->def_regular = 1; | |
7519 | h->ref_regular = 1; | |
7520 | h->forced_local = 1; | |
7521 | h->root.type = bfd_link_hash_defined; | |
7522 | } | |
7523 | else | |
7524 | h = NULL; | |
7525 | } | |
a06ea964 NC |
7526 | else |
7527 | { | |
7528 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
7529 | while (h->root.type == bfd_link_hash_indirect | |
7530 | || h->root.type == bfd_link_hash_warning) | |
7531 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7532 | } | |
7533 | ||
7534 | /* Could be done earlier, if h were already available. */ | |
a6bb11b2 | 7535 | bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx); |
a06ea964 | 7536 | |
1419bbe5 WN |
7537 | if (h != NULL) |
7538 | { | |
18f822a0 JW |
7539 | /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. |
7540 | This shows up in particular in an R_AARCH64_PREL64 in large model | |
7541 | when calculating the pc-relative address to .got section which is | |
7542 | used to initialize the gp register. */ | |
7543 | if (h->root.root.string | |
7544 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
7545 | { | |
7546 | if (htab->root.dynobj == NULL) | |
7547 | htab->root.dynobj = abfd; | |
7548 | ||
7549 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
7550 | return FALSE; | |
7551 | ||
7552 | BFD_ASSERT (h == htab->root.hgot); | |
7553 | } | |
7554 | ||
1419bbe5 WN |
7555 | /* Create the ifunc sections for static executables. If we |
7556 | never see an indirect function symbol nor we are building | |
7557 | a static executable, those sections will be empty and | |
7558 | won't appear in output. */ | |
7559 | switch (bfd_r_type) | |
7560 | { | |
7561 | default: | |
7562 | break; | |
7563 | ||
ce336788 JW |
7564 | case BFD_RELOC_AARCH64_ADD_LO12: |
7565 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: | |
7566 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
1419bbe5 | 7567 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 7568 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
1419bbe5 | 7569 | case BFD_RELOC_AARCH64_JUMP26: |
7018c030 | 7570 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
1419bbe5 | 7571 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 7572 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 7573 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
1419bbe5 | 7574 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 7575 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 7576 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
ce336788 | 7577 | case BFD_RELOC_AARCH64_NN: |
1419bbe5 WN |
7578 | if (htab->root.dynobj == NULL) |
7579 | htab->root.dynobj = abfd; | |
7580 | if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info)) | |
7581 | return FALSE; | |
7582 | break; | |
7583 | } | |
7584 | ||
2d0ca824 | 7585 | /* It is referenced by a non-shared object. */ |
1419bbe5 | 7586 | h->ref_regular = 1; |
1419bbe5 WN |
7587 | } |
7588 | ||
a6bb11b2 | 7589 | switch (bfd_r_type) |
a06ea964 | 7590 | { |
79e74192 RL |
7591 | case BFD_RELOC_AARCH64_16: |
7592 | #if ARCH_SIZE == 64 | |
7593 | case BFD_RELOC_AARCH64_32: | |
7594 | #endif | |
279b2f94 | 7595 | if (bfd_link_pic (info) && (sec->flags & SEC_ALLOC) != 0) |
79e74192 | 7596 | { |
279b2f94 RL |
7597 | if (h != NULL |
7598 | /* This is an absolute symbol. It represents a value instead | |
7599 | of an address. */ | |
c691de6a | 7600 | && (bfd_is_abs_symbol (&h->root) |
279b2f94 RL |
7601 | /* This is an undefined symbol. */ |
7602 | || h->root.type == bfd_link_hash_undefined)) | |
7603 | break; | |
7604 | ||
7605 | /* For local symbols, defined global symbols in a non-ABS section, | |
7606 | it is assumed that the value is an address. */ | |
79e74192 RL |
7607 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; |
7608 | _bfd_error_handler | |
7609 | /* xgettext:c-format */ | |
871b3ab2 | 7610 | (_("%pB: relocation %s against `%s' can not be used when making " |
79e74192 RL |
7611 | "a shared object"), |
7612 | abfd, elfNN_aarch64_howto_table[howto_index].name, | |
7613 | (h) ? h->root.root.string : "a local symbol"); | |
7614 | bfd_set_error (bfd_error_bad_value); | |
7615 | return FALSE; | |
7616 | } | |
7617 | else | |
7618 | break; | |
7619 | ||
6353d82b JW |
7620 | case BFD_RELOC_AARCH64_MOVW_G0_NC: |
7621 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
7622 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
7623 | case BFD_RELOC_AARCH64_MOVW_G3: | |
7624 | if (bfd_link_pic (info)) | |
7625 | { | |
7626 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
7627 | _bfd_error_handler | |
7628 | /* xgettext:c-format */ | |
871b3ab2 | 7629 | (_("%pB: relocation %s against `%s' can not be used when making " |
6353d82b JW |
7630 | "a shared object; recompile with -fPIC"), |
7631 | abfd, elfNN_aarch64_howto_table[howto_index].name, | |
7632 | (h) ? h->root.root.string : "a local symbol"); | |
7633 | bfd_set_error (bfd_error_bad_value); | |
7634 | return FALSE; | |
7635 | } | |
7636 | /* Fall through. */ | |
7637 | ||
7638 | case BFD_RELOC_AARCH64_16_PCREL: | |
7639 | case BFD_RELOC_AARCH64_32_PCREL: | |
7640 | case BFD_RELOC_AARCH64_64_PCREL: | |
7641 | case BFD_RELOC_AARCH64_ADD_LO12: | |
7642 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: | |
7643 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
7644 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
7645 | case BFD_RELOC_AARCH64_LDST128_LO12: | |
7646 | case BFD_RELOC_AARCH64_LDST16_LO12: | |
7647 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
7648 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
7649 | case BFD_RELOC_AARCH64_LDST8_LO12: | |
7650 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
7651 | if (h == NULL || bfd_link_pic (info)) | |
7652 | break; | |
7653 | /* Fall through. */ | |
7654 | ||
a6bb11b2 | 7655 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
7656 | |
7657 | /* We don't need to handle relocs into sections not going into | |
7658 | the "real" output. */ | |
7659 | if ((sec->flags & SEC_ALLOC) == 0) | |
7660 | break; | |
7661 | ||
7662 | if (h != NULL) | |
7663 | { | |
0e1862bb | 7664 | if (!bfd_link_pic (info)) |
a06ea964 NC |
7665 | h->non_got_ref = 1; |
7666 | ||
7667 | h->plt.refcount += 1; | |
7668 | h->pointer_equality_needed = 1; | |
7669 | } | |
7670 | ||
7671 | /* No need to do anything if we're not creating a shared | |
7672 | object. */ | |
6353d82b JW |
7673 | if (!(bfd_link_pic (info) |
7674 | /* If on the other hand, we are creating an executable, we | |
7675 | may need to keep relocations for symbols satisfied by a | |
7676 | dynamic library if we manage to avoid copy relocs for the | |
7677 | symbol. | |
7678 | ||
7679 | NOTE: Currently, there is no support of copy relocs | |
7680 | elimination on pc-relative relocation types, because there is | |
7681 | no dynamic relocation support for them in glibc. We still | |
7682 | record the dynamic symbol reference for them. This is | |
7683 | because one symbol may be referenced by both absolute | |
7684 | relocation (for example, BFD_RELOC_AARCH64_NN) and | |
7685 | pc-relative relocation. We need full symbol reference | |
7686 | information to make correct decision later in | |
7687 | elfNN_aarch64_adjust_dynamic_symbol. */ | |
7688 | || (ELIMINATE_COPY_RELOCS | |
7689 | && !bfd_link_pic (info) | |
7690 | && h != NULL | |
7691 | && (h->root.type == bfd_link_hash_defweak | |
7692 | || !h->def_regular)))) | |
a06ea964 NC |
7693 | break; |
7694 | ||
7695 | { | |
7696 | struct elf_dyn_relocs *p; | |
7697 | struct elf_dyn_relocs **head; | |
6353d82b | 7698 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; |
a06ea964 NC |
7699 | |
7700 | /* We must copy these reloc types into the output file. | |
7701 | Create a reloc section in dynobj and make room for | |
7702 | this reloc. */ | |
7703 | if (sreloc == NULL) | |
7704 | { | |
7705 | if (htab->root.dynobj == NULL) | |
7706 | htab->root.dynobj = abfd; | |
7707 | ||
7708 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
0608afa7 | 7709 | (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE); |
a06ea964 NC |
7710 | |
7711 | if (sreloc == NULL) | |
7712 | return FALSE; | |
7713 | } | |
7714 | ||
7715 | /* If this is a global symbol, we count the number of | |
7716 | relocations we need for this symbol. */ | |
7717 | if (h != NULL) | |
7718 | { | |
cec5225b YZ |
7719 | struct elf_aarch64_link_hash_entry *eh; |
7720 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
7721 | head = &eh->dyn_relocs; |
7722 | } | |
7723 | else | |
7724 | { | |
7725 | /* Track dynamic relocs needed for local syms too. | |
7726 | We really need local syms available to do this | |
7727 | easily. Oh well. */ | |
7728 | ||
7729 | asection *s; | |
7730 | void **vpp; | |
a06ea964 NC |
7731 | |
7732 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
7733 | abfd, r_symndx); | |
7734 | if (isym == NULL) | |
7735 | return FALSE; | |
7736 | ||
7737 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
7738 | if (s == NULL) | |
7739 | s = sec; | |
7740 | ||
7741 | /* Beware of type punned pointers vs strict aliasing | |
7742 | rules. */ | |
7743 | vpp = &(elf_section_data (s)->local_dynrel); | |
7744 | head = (struct elf_dyn_relocs **) vpp; | |
7745 | } | |
7746 | ||
7747 | p = *head; | |
7748 | if (p == NULL || p->sec != sec) | |
7749 | { | |
7750 | bfd_size_type amt = sizeof *p; | |
7751 | p = ((struct elf_dyn_relocs *) | |
7752 | bfd_zalloc (htab->root.dynobj, amt)); | |
7753 | if (p == NULL) | |
7754 | return FALSE; | |
7755 | p->next = *head; | |
7756 | *head = p; | |
7757 | p->sec = sec; | |
7758 | } | |
7759 | ||
7760 | p->count += 1; | |
7761 | ||
6353d82b JW |
7762 | if (elfNN_aarch64_howto_table[howto_index].pc_relative) |
7763 | p->pc_count += 1; | |
a06ea964 NC |
7764 | } |
7765 | break; | |
7766 | ||
7767 | /* RR: We probably want to keep a consistency check that | |
7768 | there are no dangling GOT_PAGE relocs. */ | |
a6bb11b2 | 7769 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
7bcccb57 | 7770 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
7018c030 | 7771 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
7bcccb57 | 7772 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 7773 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 7774 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
7bcccb57 | 7775 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 7776 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 7777 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
f955cccf | 7778 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
7bcccb57 | 7779 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 7780 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
7bcccb57 | 7781 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
f955cccf | 7782 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
1ada945d | 7783 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
7784 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
7785 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a6bb11b2 | 7786 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
7bcccb57 | 7787 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 7788 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 7789 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 7790 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
a6bb11b2 | 7791 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 7792 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
7bcccb57 | 7793 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 7794 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
7795 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
7796 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
73f925cc | 7797 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 7798 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 7799 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
7800 | { |
7801 | unsigned got_type; | |
7802 | unsigned old_got_type; | |
7803 | ||
a6bb11b2 | 7804 | got_type = aarch64_reloc_got_type (bfd_r_type); |
a06ea964 NC |
7805 | |
7806 | if (h) | |
7807 | { | |
7808 | h->got.refcount += 1; | |
cec5225b | 7809 | old_got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
7810 | } |
7811 | else | |
7812 | { | |
7813 | struct elf_aarch64_local_symbol *locals; | |
7814 | ||
cec5225b | 7815 | if (!elfNN_aarch64_allocate_local_symbols |
a06ea964 NC |
7816 | (abfd, symtab_hdr->sh_info)) |
7817 | return FALSE; | |
7818 | ||
cec5225b | 7819 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
7820 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
7821 | locals[r_symndx].got_refcount += 1; | |
7822 | old_got_type = locals[r_symndx].got_type; | |
7823 | } | |
7824 | ||
7825 | /* If a variable is accessed with both general dynamic TLS | |
7826 | methods, two slots may be created. */ | |
7827 | if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type)) | |
7828 | got_type |= old_got_type; | |
7829 | ||
7830 | /* We will already have issued an error message if there | |
7831 | is a TLS/non-TLS mismatch, based on the symbol type. | |
7832 | So just combine any TLS types needed. */ | |
7833 | if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL | |
7834 | && got_type != GOT_NORMAL) | |
7835 | got_type |= old_got_type; | |
7836 | ||
7837 | /* If the symbol is accessed by both IE and GD methods, we | |
7838 | are able to relax. Turn off the GD flag, without | |
7839 | messing up with any other kind of TLS types that may be | |
7840 | involved. */ | |
7841 | if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type)) | |
7842 | got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD); | |
7843 | ||
7844 | if (old_got_type != got_type) | |
7845 | { | |
7846 | if (h != NULL) | |
cec5225b | 7847 | elf_aarch64_hash_entry (h)->got_type = got_type; |
a06ea964 NC |
7848 | else |
7849 | { | |
7850 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 7851 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
7852 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
7853 | locals[r_symndx].got_type = got_type; | |
7854 | } | |
7855 | } | |
7856 | ||
cc0efaa8 MS |
7857 | if (htab->root.dynobj == NULL) |
7858 | htab->root.dynobj = abfd; | |
7859 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
7860 | return FALSE; | |
a06ea964 NC |
7861 | break; |
7862 | } | |
7863 | ||
a6bb11b2 YZ |
7864 | case BFD_RELOC_AARCH64_CALL26: |
7865 | case BFD_RELOC_AARCH64_JUMP26: | |
a06ea964 NC |
7866 | /* If this is a local symbol then we resolve it |
7867 | directly without creating a PLT entry. */ | |
7868 | if (h == NULL) | |
7869 | continue; | |
7870 | ||
7871 | h->needs_plt = 1; | |
1419bbe5 WN |
7872 | if (h->plt.refcount <= 0) |
7873 | h->plt.refcount = 1; | |
7874 | else | |
7875 | h->plt.refcount += 1; | |
a06ea964 | 7876 | break; |
a6bb11b2 YZ |
7877 | |
7878 | default: | |
7879 | break; | |
a06ea964 NC |
7880 | } |
7881 | } | |
a6bb11b2 | 7882 | |
a06ea964 NC |
7883 | return TRUE; |
7884 | } | |
7885 | ||
7886 | /* Treat mapping symbols as special target symbols. */ | |
7887 | ||
7888 | static bfd_boolean | |
cec5225b | 7889 | elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
7890 | asymbol *sym) |
7891 | { | |
7892 | return bfd_is_aarch64_special_symbol_name (sym->name, | |
7893 | BFD_AARCH64_SPECIAL_SYM_TYPE_ANY); | |
7894 | } | |
7895 | ||
7896 | /* This is a copy of elf_find_function () from elf.c except that | |
7897 | AArch64 mapping symbols are ignored when looking for function names. */ | |
7898 | ||
7899 | static bfd_boolean | |
7900 | aarch64_elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, | |
a06ea964 | 7901 | asymbol **symbols, |
fb167eb2 | 7902 | asection *section, |
a06ea964 NC |
7903 | bfd_vma offset, |
7904 | const char **filename_ptr, | |
7905 | const char **functionname_ptr) | |
7906 | { | |
7907 | const char *filename = NULL; | |
7908 | asymbol *func = NULL; | |
7909 | bfd_vma low_func = 0; | |
7910 | asymbol **p; | |
7911 | ||
7912 | for (p = symbols; *p != NULL; p++) | |
7913 | { | |
7914 | elf_symbol_type *q; | |
7915 | ||
7916 | q = (elf_symbol_type *) * p; | |
7917 | ||
7918 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) | |
7919 | { | |
7920 | default: | |
7921 | break; | |
7922 | case STT_FILE: | |
7923 | filename = bfd_asymbol_name (&q->symbol); | |
7924 | break; | |
7925 | case STT_FUNC: | |
7926 | case STT_NOTYPE: | |
7927 | /* Skip mapping symbols. */ | |
7928 | if ((q->symbol.flags & BSF_LOCAL) | |
7929 | && (bfd_is_aarch64_special_symbol_name | |
7930 | (q->symbol.name, BFD_AARCH64_SPECIAL_SYM_TYPE_ANY))) | |
7931 | continue; | |
7932 | /* Fall through. */ | |
7933 | if (bfd_get_section (&q->symbol) == section | |
7934 | && q->symbol.value >= low_func && q->symbol.value <= offset) | |
7935 | { | |
7936 | func = (asymbol *) q; | |
7937 | low_func = q->symbol.value; | |
7938 | } | |
7939 | break; | |
7940 | } | |
7941 | } | |
7942 | ||
7943 | if (func == NULL) | |
7944 | return FALSE; | |
7945 | ||
7946 | if (filename_ptr) | |
7947 | *filename_ptr = filename; | |
7948 | if (functionname_ptr) | |
7949 | *functionname_ptr = bfd_asymbol_name (func); | |
7950 | ||
7951 | return TRUE; | |
7952 | } | |
7953 | ||
7954 | ||
7955 | /* Find the nearest line to a particular section and offset, for error | |
7956 | reporting. This code is a duplicate of the code in elf.c, except | |
7957 | that it uses aarch64_elf_find_function. */ | |
7958 | ||
7959 | static bfd_boolean | |
cec5225b | 7960 | elfNN_aarch64_find_nearest_line (bfd *abfd, |
a06ea964 | 7961 | asymbol **symbols, |
fb167eb2 | 7962 | asection *section, |
a06ea964 NC |
7963 | bfd_vma offset, |
7964 | const char **filename_ptr, | |
7965 | const char **functionname_ptr, | |
fb167eb2 AM |
7966 | unsigned int *line_ptr, |
7967 | unsigned int *discriminator_ptr) | |
a06ea964 NC |
7968 | { |
7969 | bfd_boolean found = FALSE; | |
7970 | ||
fb167eb2 | 7971 | if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset, |
a06ea964 | 7972 | filename_ptr, functionname_ptr, |
fb167eb2 AM |
7973 | line_ptr, discriminator_ptr, |
7974 | dwarf_debug_sections, 0, | |
a06ea964 NC |
7975 | &elf_tdata (abfd)->dwarf2_find_line_info)) |
7976 | { | |
7977 | if (!*functionname_ptr) | |
fb167eb2 | 7978 | aarch64_elf_find_function (abfd, symbols, section, offset, |
a06ea964 NC |
7979 | *filename_ptr ? NULL : filename_ptr, |
7980 | functionname_ptr); | |
7981 | ||
7982 | return TRUE; | |
7983 | } | |
7984 | ||
fb167eb2 AM |
7985 | /* Skip _bfd_dwarf1_find_nearest_line since no known AArch64 |
7986 | toolchain uses DWARF1. */ | |
7987 | ||
a06ea964 NC |
7988 | if (!_bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, |
7989 | &found, filename_ptr, | |
7990 | functionname_ptr, line_ptr, | |
7991 | &elf_tdata (abfd)->line_info)) | |
7992 | return FALSE; | |
7993 | ||
7994 | if (found && (*functionname_ptr || *line_ptr)) | |
7995 | return TRUE; | |
7996 | ||
7997 | if (symbols == NULL) | |
7998 | return FALSE; | |
7999 | ||
fb167eb2 | 8000 | if (!aarch64_elf_find_function (abfd, symbols, section, offset, |
a06ea964 NC |
8001 | filename_ptr, functionname_ptr)) |
8002 | return FALSE; | |
8003 | ||
8004 | *line_ptr = 0; | |
8005 | return TRUE; | |
8006 | } | |
8007 | ||
8008 | static bfd_boolean | |
cec5225b | 8009 | elfNN_aarch64_find_inliner_info (bfd *abfd, |
a06ea964 NC |
8010 | const char **filename_ptr, |
8011 | const char **functionname_ptr, | |
8012 | unsigned int *line_ptr) | |
8013 | { | |
8014 | bfd_boolean found; | |
8015 | found = _bfd_dwarf2_find_inliner_info | |
8016 | (abfd, filename_ptr, | |
8017 | functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info); | |
8018 | return found; | |
8019 | } | |
8020 | ||
8021 | ||
8022 | static void | |
cec5225b | 8023 | elfNN_aarch64_post_process_headers (bfd *abfd, |
1419bbe5 | 8024 | struct bfd_link_info *link_info) |
a06ea964 NC |
8025 | { |
8026 | Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */ | |
8027 | ||
8028 | i_ehdrp = elf_elfheader (abfd); | |
a06ea964 | 8029 | i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION; |
1419bbe5 | 8030 | |
78245035 | 8031 | _bfd_elf_post_process_headers (abfd, link_info); |
a06ea964 NC |
8032 | } |
8033 | ||
8034 | static enum elf_reloc_type_class | |
cec5225b | 8035 | elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
7e612e98 AM |
8036 | const asection *rel_sec ATTRIBUTE_UNUSED, |
8037 | const Elf_Internal_Rela *rela) | |
a06ea964 | 8038 | { |
f2e6a843 SN |
8039 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); |
8040 | ||
8041 | if (htab->root.dynsym != NULL | |
8042 | && htab->root.dynsym->contents != NULL) | |
8043 | { | |
8044 | /* Check relocation against STT_GNU_IFUNC symbol if there are | |
8045 | dynamic symbols. */ | |
8046 | bfd *abfd = info->output_bfd; | |
8047 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8048 | unsigned long r_symndx = ELFNN_R_SYM (rela->r_info); | |
8049 | if (r_symndx != STN_UNDEF) | |
8050 | { | |
8051 | Elf_Internal_Sym sym; | |
8052 | if (!bed->s->swap_symbol_in (abfd, | |
8053 | (htab->root.dynsym->contents | |
8054 | + r_symndx * bed->s->sizeof_sym), | |
8055 | 0, &sym)) | |
8056 | { | |
8057 | /* xgettext:c-format */ | |
871b3ab2 | 8058 | _bfd_error_handler (_("%pB symbol number %lu references" |
f2e6a843 SN |
8059 | " nonexistent SHT_SYMTAB_SHNDX section"), |
8060 | abfd, r_symndx); | |
8061 | /* Ideally an error class should be returned here. */ | |
8062 | } | |
8063 | else if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC) | |
8064 | return reloc_class_ifunc; | |
8065 | } | |
8066 | } | |
8067 | ||
cec5225b | 8068 | switch ((int) ELFNN_R_TYPE (rela->r_info)) |
a06ea964 | 8069 | { |
f2e6a843 SN |
8070 | case AARCH64_R (IRELATIVE): |
8071 | return reloc_class_ifunc; | |
a6bb11b2 | 8072 | case AARCH64_R (RELATIVE): |
a06ea964 | 8073 | return reloc_class_relative; |
a6bb11b2 | 8074 | case AARCH64_R (JUMP_SLOT): |
a06ea964 | 8075 | return reloc_class_plt; |
a6bb11b2 | 8076 | case AARCH64_R (COPY): |
a06ea964 NC |
8077 | return reloc_class_copy; |
8078 | default: | |
8079 | return reloc_class_normal; | |
8080 | } | |
8081 | } | |
8082 | ||
a06ea964 NC |
8083 | /* Handle an AArch64 specific section when reading an object file. This is |
8084 | called when bfd_section_from_shdr finds a section with an unknown | |
8085 | type. */ | |
8086 | ||
8087 | static bfd_boolean | |
cec5225b | 8088 | elfNN_aarch64_section_from_shdr (bfd *abfd, |
a06ea964 NC |
8089 | Elf_Internal_Shdr *hdr, |
8090 | const char *name, int shindex) | |
8091 | { | |
8092 | /* There ought to be a place to keep ELF backend specific flags, but | |
8093 | at the moment there isn't one. We just keep track of the | |
8094 | sections by their name, instead. Fortunately, the ABI gives | |
8095 | names for all the AArch64 specific sections, so we will probably get | |
8096 | away with this. */ | |
8097 | switch (hdr->sh_type) | |
8098 | { | |
8099 | case SHT_AARCH64_ATTRIBUTES: | |
8100 | break; | |
8101 | ||
8102 | default: | |
8103 | return FALSE; | |
8104 | } | |
8105 | ||
8106 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
8107 | return FALSE; | |
8108 | ||
8109 | return TRUE; | |
8110 | } | |
8111 | ||
8112 | /* A structure used to record a list of sections, independently | |
8113 | of the next and prev fields in the asection structure. */ | |
8114 | typedef struct section_list | |
8115 | { | |
8116 | asection *sec; | |
8117 | struct section_list *next; | |
8118 | struct section_list *prev; | |
8119 | } | |
8120 | section_list; | |
8121 | ||
8122 | /* Unfortunately we need to keep a list of sections for which | |
8123 | an _aarch64_elf_section_data structure has been allocated. This | |
cec5225b | 8124 | is because it is possible for functions like elfNN_aarch64_write_section |
a06ea964 NC |
8125 | to be called on a section which has had an elf_data_structure |
8126 | allocated for it (and so the used_by_bfd field is valid) but | |
8127 | for which the AArch64 extended version of this structure - the | |
8128 | _aarch64_elf_section_data structure - has not been allocated. */ | |
8129 | static section_list *sections_with_aarch64_elf_section_data = NULL; | |
8130 | ||
8131 | static void | |
8132 | record_section_with_aarch64_elf_section_data (asection *sec) | |
8133 | { | |
8134 | struct section_list *entry; | |
8135 | ||
8136 | entry = bfd_malloc (sizeof (*entry)); | |
8137 | if (entry == NULL) | |
8138 | return; | |
8139 | entry->sec = sec; | |
8140 | entry->next = sections_with_aarch64_elf_section_data; | |
8141 | entry->prev = NULL; | |
8142 | if (entry->next != NULL) | |
8143 | entry->next->prev = entry; | |
8144 | sections_with_aarch64_elf_section_data = entry; | |
8145 | } | |
8146 | ||
8147 | static struct section_list * | |
8148 | find_aarch64_elf_section_entry (asection *sec) | |
8149 | { | |
8150 | struct section_list *entry; | |
8151 | static struct section_list *last_entry = NULL; | |
8152 | ||
8153 | /* This is a short cut for the typical case where the sections are added | |
8154 | to the sections_with_aarch64_elf_section_data list in forward order and | |
8155 | then looked up here in backwards order. This makes a real difference | |
8156 | to the ld-srec/sec64k.exp linker test. */ | |
8157 | entry = sections_with_aarch64_elf_section_data; | |
8158 | if (last_entry != NULL) | |
8159 | { | |
8160 | if (last_entry->sec == sec) | |
8161 | entry = last_entry; | |
8162 | else if (last_entry->next != NULL && last_entry->next->sec == sec) | |
8163 | entry = last_entry->next; | |
8164 | } | |
8165 | ||
8166 | for (; entry; entry = entry->next) | |
8167 | if (entry->sec == sec) | |
8168 | break; | |
8169 | ||
8170 | if (entry) | |
8171 | /* Record the entry prior to this one - it is the entry we are | |
8172 | most likely to want to locate next time. Also this way if we | |
8173 | have been called from | |
8174 | unrecord_section_with_aarch64_elf_section_data () we will not | |
8175 | be caching a pointer that is about to be freed. */ | |
8176 | last_entry = entry->prev; | |
8177 | ||
8178 | return entry; | |
8179 | } | |
8180 | ||
8181 | static void | |
8182 | unrecord_section_with_aarch64_elf_section_data (asection *sec) | |
8183 | { | |
8184 | struct section_list *entry; | |
8185 | ||
8186 | entry = find_aarch64_elf_section_entry (sec); | |
8187 | ||
8188 | if (entry) | |
8189 | { | |
8190 | if (entry->prev != NULL) | |
8191 | entry->prev->next = entry->next; | |
8192 | if (entry->next != NULL) | |
8193 | entry->next->prev = entry->prev; | |
8194 | if (entry == sections_with_aarch64_elf_section_data) | |
8195 | sections_with_aarch64_elf_section_data = entry->next; | |
8196 | free (entry); | |
8197 | } | |
8198 | } | |
8199 | ||
8200 | ||
8201 | typedef struct | |
8202 | { | |
8203 | void *finfo; | |
8204 | struct bfd_link_info *info; | |
8205 | asection *sec; | |
8206 | int sec_shndx; | |
8207 | int (*func) (void *, const char *, Elf_Internal_Sym *, | |
8208 | asection *, struct elf_link_hash_entry *); | |
8209 | } output_arch_syminfo; | |
8210 | ||
8211 | enum map_symbol_type | |
8212 | { | |
8213 | AARCH64_MAP_INSN, | |
8214 | AARCH64_MAP_DATA | |
8215 | }; | |
8216 | ||
8217 | ||
8218 | /* Output a single mapping symbol. */ | |
8219 | ||
8220 | static bfd_boolean | |
cec5225b | 8221 | elfNN_aarch64_output_map_sym (output_arch_syminfo *osi, |
a06ea964 NC |
8222 | enum map_symbol_type type, bfd_vma offset) |
8223 | { | |
8224 | static const char *names[2] = { "$x", "$d" }; | |
8225 | Elf_Internal_Sym sym; | |
8226 | ||
8227 | sym.st_value = (osi->sec->output_section->vma | |
8228 | + osi->sec->output_offset + offset); | |
8229 | sym.st_size = 0; | |
8230 | sym.st_other = 0; | |
8231 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
8232 | sym.st_shndx = osi->sec_shndx; | |
8233 | return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1; | |
8234 | } | |
8235 | ||
a06ea964 NC |
8236 | /* Output a single local symbol for a generated stub. */ |
8237 | ||
8238 | static bfd_boolean | |
cec5225b | 8239 | elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name, |
a06ea964 NC |
8240 | bfd_vma offset, bfd_vma size) |
8241 | { | |
8242 | Elf_Internal_Sym sym; | |
8243 | ||
8244 | sym.st_value = (osi->sec->output_section->vma | |
8245 | + osi->sec->output_offset + offset); | |
8246 | sym.st_size = size; | |
8247 | sym.st_other = 0; | |
8248 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
8249 | sym.st_shndx = osi->sec_shndx; | |
8250 | return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1; | |
8251 | } | |
8252 | ||
8253 | static bfd_boolean | |
8254 | aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) | |
8255 | { | |
cec5225b | 8256 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
8257 | asection *stub_sec; |
8258 | bfd_vma addr; | |
8259 | char *stub_name; | |
8260 | output_arch_syminfo *osi; | |
8261 | ||
8262 | /* Massage our args to the form they really have. */ | |
cec5225b | 8263 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
8264 | osi = (output_arch_syminfo *) in_arg; |
8265 | ||
8266 | stub_sec = stub_entry->stub_sec; | |
8267 | ||
8268 | /* Ensure this stub is attached to the current section being | |
8269 | processed. */ | |
8270 | if (stub_sec != osi->sec) | |
8271 | return TRUE; | |
8272 | ||
8273 | addr = (bfd_vma) stub_entry->stub_offset; | |
8274 | ||
8275 | stub_name = stub_entry->output_name; | |
8276 | ||
8277 | switch (stub_entry->stub_type) | |
8278 | { | |
8279 | case aarch64_stub_adrp_branch: | |
cec5225b | 8280 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, |
a06ea964 NC |
8281 | sizeof (aarch64_adrp_branch_stub))) |
8282 | return FALSE; | |
cec5225b | 8283 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 NC |
8284 | return FALSE; |
8285 | break; | |
8286 | case aarch64_stub_long_branch: | |
cec5225b | 8287 | if (!elfNN_aarch64_output_stub_sym |
a06ea964 NC |
8288 | (osi, stub_name, addr, sizeof (aarch64_long_branch_stub))) |
8289 | return FALSE; | |
cec5225b | 8290 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 | 8291 | return FALSE; |
cec5225b | 8292 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16)) |
a06ea964 NC |
8293 | return FALSE; |
8294 | break; | |
68fcca92 JW |
8295 | case aarch64_stub_erratum_835769_veneer: |
8296 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
8297 | sizeof (aarch64_erratum_835769_stub))) | |
8298 | return FALSE; | |
8299 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
8300 | return FALSE; | |
8301 | break; | |
4106101c MS |
8302 | case aarch64_stub_erratum_843419_veneer: |
8303 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
8304 | sizeof (aarch64_erratum_843419_stub))) | |
8305 | return FALSE; | |
8306 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
8307 | return FALSE; | |
8308 | break; | |
9fca35fc TC |
8309 | case aarch64_stub_none: |
8310 | break; | |
4106101c | 8311 | |
a06ea964 | 8312 | default: |
8e2fe09f | 8313 | abort (); |
a06ea964 NC |
8314 | } |
8315 | ||
8316 | return TRUE; | |
8317 | } | |
8318 | ||
8319 | /* Output mapping symbols for linker generated sections. */ | |
8320 | ||
8321 | static bfd_boolean | |
cec5225b | 8322 | elfNN_aarch64_output_arch_local_syms (bfd *output_bfd, |
a06ea964 NC |
8323 | struct bfd_link_info *info, |
8324 | void *finfo, | |
8325 | int (*func) (void *, const char *, | |
8326 | Elf_Internal_Sym *, | |
8327 | asection *, | |
8328 | struct elf_link_hash_entry | |
8329 | *)) | |
8330 | { | |
8331 | output_arch_syminfo osi; | |
cec5225b | 8332 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 8333 | |
cec5225b | 8334 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
8335 | |
8336 | osi.finfo = finfo; | |
8337 | osi.info = info; | |
8338 | osi.func = func; | |
8339 | ||
8340 | /* Long calls stubs. */ | |
8341 | if (htab->stub_bfd && htab->stub_bfd->sections) | |
8342 | { | |
8343 | asection *stub_sec; | |
8344 | ||
8345 | for (stub_sec = htab->stub_bfd->sections; | |
8346 | stub_sec != NULL; stub_sec = stub_sec->next) | |
8347 | { | |
8348 | /* Ignore non-stub sections. */ | |
8349 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
8350 | continue; | |
8351 | ||
8352 | osi.sec = stub_sec; | |
8353 | ||
8354 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
8355 | (output_bfd, osi.sec->output_section); | |
8356 | ||
61865519 MS |
8357 | /* The first instruction in a stub is always a branch. */ |
8358 | if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0)) | |
8359 | return FALSE; | |
8360 | ||
a06ea964 NC |
8361 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub, |
8362 | &osi); | |
8363 | } | |
8364 | } | |
8365 | ||
8366 | /* Finally, output mapping symbols for the PLT. */ | |
8367 | if (!htab->root.splt || htab->root.splt->size == 0) | |
8368 | return TRUE; | |
8369 | ||
a06ea964 NC |
8370 | osi.sec_shndx = _bfd_elf_section_from_bfd_section |
8371 | (output_bfd, htab->root.splt->output_section); | |
8372 | osi.sec = htab->root.splt; | |
8373 | ||
73524045 | 8374 | elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0); |
a06ea964 NC |
8375 | |
8376 | return TRUE; | |
8377 | ||
8378 | } | |
8379 | ||
8380 | /* Allocate target specific section data. */ | |
8381 | ||
8382 | static bfd_boolean | |
cec5225b | 8383 | elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec) |
a06ea964 NC |
8384 | { |
8385 | if (!sec->used_by_bfd) | |
8386 | { | |
8387 | _aarch64_elf_section_data *sdata; | |
8388 | bfd_size_type amt = sizeof (*sdata); | |
8389 | ||
8390 | sdata = bfd_zalloc (abfd, amt); | |
8391 | if (sdata == NULL) | |
8392 | return FALSE; | |
8393 | sec->used_by_bfd = sdata; | |
8394 | } | |
8395 | ||
8396 | record_section_with_aarch64_elf_section_data (sec); | |
8397 | ||
8398 | return _bfd_elf_new_section_hook (abfd, sec); | |
8399 | } | |
8400 | ||
8401 | ||
8402 | static void | |
8403 | unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
8404 | asection *sec, | |
8405 | void *ignore ATTRIBUTE_UNUSED) | |
8406 | { | |
8407 | unrecord_section_with_aarch64_elf_section_data (sec); | |
8408 | } | |
8409 | ||
8410 | static bfd_boolean | |
cec5225b | 8411 | elfNN_aarch64_close_and_cleanup (bfd *abfd) |
a06ea964 NC |
8412 | { |
8413 | if (abfd->sections) | |
8414 | bfd_map_over_sections (abfd, | |
8415 | unrecord_section_via_map_over_sections, NULL); | |
8416 | ||
8417 | return _bfd_elf_close_and_cleanup (abfd); | |
8418 | } | |
8419 | ||
8420 | static bfd_boolean | |
cec5225b | 8421 | elfNN_aarch64_bfd_free_cached_info (bfd *abfd) |
a06ea964 NC |
8422 | { |
8423 | if (abfd->sections) | |
8424 | bfd_map_over_sections (abfd, | |
8425 | unrecord_section_via_map_over_sections, NULL); | |
8426 | ||
8427 | return _bfd_free_cached_info (abfd); | |
8428 | } | |
8429 | ||
a06ea964 NC |
8430 | /* Create dynamic sections. This is different from the ARM backend in that |
8431 | the got, plt, gotplt and their relocation sections are all created in the | |
8432 | standard part of the bfd elf backend. */ | |
8433 | ||
8434 | static bfd_boolean | |
cec5225b | 8435 | elfNN_aarch64_create_dynamic_sections (bfd *dynobj, |
a06ea964 NC |
8436 | struct bfd_link_info *info) |
8437 | { | |
cc0efaa8 MS |
8438 | /* We need to create .got section. */ |
8439 | if (!aarch64_elf_create_got_section (dynobj, info)) | |
8440 | return FALSE; | |
a06ea964 | 8441 | |
9d19e4fd | 8442 | return _bfd_elf_create_dynamic_sections (dynobj, info); |
a06ea964 NC |
8443 | } |
8444 | ||
8445 | ||
8446 | /* Allocate space in .plt, .got and associated reloc sections for | |
8447 | dynamic relocs. */ | |
8448 | ||
8449 | static bfd_boolean | |
cec5225b | 8450 | elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
a06ea964 NC |
8451 | { |
8452 | struct bfd_link_info *info; | |
cec5225b YZ |
8453 | struct elf_aarch64_link_hash_table *htab; |
8454 | struct elf_aarch64_link_hash_entry *eh; | |
a06ea964 NC |
8455 | struct elf_dyn_relocs *p; |
8456 | ||
8457 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
8458 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
8459 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
8460 | ||
8461 | There is no need to process bfd_link_hash_indirect symbols here | |
8462 | because we will also be presented with the concrete instance of | |
cec5225b | 8463 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been |
a06ea964 | 8464 | called to copy all relevant data from the generic to the concrete |
2d0ca824 | 8465 | symbol instance. */ |
a06ea964 NC |
8466 | if (h->root.type == bfd_link_hash_indirect) |
8467 | return TRUE; | |
8468 | ||
8469 | if (h->root.type == bfd_link_hash_warning) | |
8470 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8471 | ||
8472 | info = (struct bfd_link_info *) inf; | |
cec5225b | 8473 | htab = elf_aarch64_hash_table (info); |
a06ea964 | 8474 | |
1419bbe5 WN |
8475 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
8476 | here if it is defined and referenced in a non-shared object. */ | |
8477 | if (h->type == STT_GNU_IFUNC | |
8478 | && h->def_regular) | |
8479 | return TRUE; | |
8480 | else if (htab->root.dynamic_sections_created && h->plt.refcount > 0) | |
a06ea964 NC |
8481 | { |
8482 | /* Make sure this symbol is output as a dynamic symbol. | |
07d6d2b8 | 8483 | Undefined weak syms won't yet be marked as dynamic. */ |
ff07562f JW |
8484 | if (h->dynindx == -1 && !h->forced_local |
8485 | && h->root.type == bfd_link_hash_undefweak) | |
a06ea964 NC |
8486 | { |
8487 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
8488 | return FALSE; | |
8489 | } | |
8490 | ||
0e1862bb | 8491 | if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
a06ea964 NC |
8492 | { |
8493 | asection *s = htab->root.splt; | |
8494 | ||
8495 | /* If this is the first .plt entry, make room for the special | |
8496 | first entry. */ | |
8497 | if (s->size == 0) | |
8498 | s->size += htab->plt_header_size; | |
8499 | ||
8500 | h->plt.offset = s->size; | |
8501 | ||
8502 | /* If this symbol is not defined in a regular file, and we are | |
8503 | not generating a shared library, then set the symbol to this | |
8504 | location in the .plt. This is required to make function | |
8505 | pointers compare as equal between the normal executable and | |
8506 | the shared library. */ | |
0e1862bb | 8507 | if (!bfd_link_pic (info) && !h->def_regular) |
a06ea964 NC |
8508 | { |
8509 | h->root.u.def.section = s; | |
8510 | h->root.u.def.value = h->plt.offset; | |
8511 | } | |
8512 | ||
8513 | /* Make room for this entry. For now we only create the | |
8514 | small model PLT entries. We later need to find a way | |
8515 | of relaxing into these from the large model PLT entries. */ | |
37c18eed | 8516 | s->size += htab->plt_entry_size; |
a06ea964 NC |
8517 | |
8518 | /* We also need to make an entry in the .got.plt section, which | |
8519 | will be placed in the .got section by the linker script. */ | |
8520 | htab->root.sgotplt->size += GOT_ENTRY_SIZE; | |
8521 | ||
8522 | /* We also need to make an entry in the .rela.plt section. */ | |
8523 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8524 | ||
8525 | /* We need to ensure that all GOT entries that serve the PLT | |
8526 | are consecutive with the special GOT slots [0] [1] and | |
8527 | [2]. Any addtional relocations, such as | |
8528 | R_AARCH64_TLSDESC, must be placed after the PLT related | |
8529 | entries. We abuse the reloc_count such that during | |
8530 | sizing we adjust reloc_count to indicate the number of | |
8531 | PLT related reserved entries. In subsequent phases when | |
8532 | filling in the contents of the reloc entries, PLT related | |
8533 | entries are placed by computing their PLT index (0 | |
8534 | .. reloc_count). While other none PLT relocs are placed | |
8535 | at the slot indicated by reloc_count and reloc_count is | |
8536 | updated. */ | |
8537 | ||
8538 | htab->root.srelplt->reloc_count++; | |
8539 | } | |
8540 | else | |
8541 | { | |
8542 | h->plt.offset = (bfd_vma) - 1; | |
8543 | h->needs_plt = 0; | |
8544 | } | |
8545 | } | |
8546 | else | |
8547 | { | |
8548 | h->plt.offset = (bfd_vma) - 1; | |
8549 | h->needs_plt = 0; | |
8550 | } | |
8551 | ||
cec5225b | 8552 | eh = (struct elf_aarch64_link_hash_entry *) h; |
a06ea964 NC |
8553 | eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; |
8554 | ||
8555 | if (h->got.refcount > 0) | |
8556 | { | |
8557 | bfd_boolean dyn; | |
cec5225b | 8558 | unsigned got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
8559 | |
8560 | h->got.offset = (bfd_vma) - 1; | |
8561 | ||
8562 | dyn = htab->root.dynamic_sections_created; | |
8563 | ||
8564 | /* Make sure this symbol is output as a dynamic symbol. | |
07d6d2b8 | 8565 | Undefined weak syms won't yet be marked as dynamic. */ |
ff07562f JW |
8566 | if (dyn && h->dynindx == -1 && !h->forced_local |
8567 | && h->root.type == bfd_link_hash_undefweak) | |
a06ea964 NC |
8568 | { |
8569 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
8570 | return FALSE; | |
8571 | } | |
8572 | ||
8573 | if (got_type == GOT_UNKNOWN) | |
8574 | { | |
8575 | } | |
8576 | else if (got_type == GOT_NORMAL) | |
8577 | { | |
8578 | h->got.offset = htab->root.sgot->size; | |
8579 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8580 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8581 | || h->root.type != bfd_link_hash_undefweak) | |
0e1862bb | 8582 | && (bfd_link_pic (info) |
a377ae2a SN |
8583 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) |
8584 | /* Undefined weak symbol in static PIE resolves to 0 without | |
8585 | any dynamic relocations. */ | |
8586 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
a06ea964 NC |
8587 | { |
8588 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
8589 | } | |
8590 | } | |
8591 | else | |
8592 | { | |
8593 | int indx; | |
8594 | if (got_type & GOT_TLSDESC_GD) | |
8595 | { | |
8596 | eh->tlsdesc_got_jump_table_offset = | |
8597 | (htab->root.sgotplt->size | |
8598 | - aarch64_compute_jump_table_size (htab)); | |
8599 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
8600 | h->got.offset = (bfd_vma) - 2; | |
8601 | } | |
8602 | ||
8603 | if (got_type & GOT_TLS_GD) | |
8604 | { | |
8605 | h->got.offset = htab->root.sgot->size; | |
8606 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
8607 | } | |
8608 | ||
8609 | if (got_type & GOT_TLS_IE) | |
8610 | { | |
8611 | h->got.offset = htab->root.sgot->size; | |
8612 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8613 | } | |
8614 | ||
8615 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
8616 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8617 | || h->root.type != bfd_link_hash_undefweak) | |
6dda7875 | 8618 | && (!bfd_link_executable (info) |
a06ea964 NC |
8619 | || indx != 0 |
8620 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
8621 | { | |
8622 | if (got_type & GOT_TLSDESC_GD) | |
8623 | { | |
8624 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8625 | /* Note reloc_count not incremented here! We have | |
8626 | already adjusted reloc_count for this relocation | |
8627 | type. */ | |
8628 | ||
8629 | /* TLSDESC PLT is now needed, but not yet determined. */ | |
8630 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
8631 | } | |
8632 | ||
8633 | if (got_type & GOT_TLS_GD) | |
8634 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
8635 | ||
8636 | if (got_type & GOT_TLS_IE) | |
8637 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
8638 | } | |
8639 | } | |
8640 | } | |
8641 | else | |
8642 | { | |
8643 | h->got.offset = (bfd_vma) - 1; | |
8644 | } | |
8645 | ||
8646 | if (eh->dyn_relocs == NULL) | |
8647 | return TRUE; | |
8648 | ||
8649 | /* In the shared -Bsymbolic case, discard space allocated for | |
8650 | dynamic pc-relative relocs against symbols which turn out to be | |
8651 | defined in regular objects. For the normal shared case, discard | |
8652 | space for pc-relative relocs that have become local due to symbol | |
8653 | visibility changes. */ | |
8654 | ||
0e1862bb | 8655 | if (bfd_link_pic (info)) |
a06ea964 NC |
8656 | { |
8657 | /* Relocs that use pc_count are those that appear on a call | |
07d6d2b8 AM |
8658 | insn, or certain REL relocs that can generated via assembly. |
8659 | We want calls to protected symbols to resolve directly to the | |
8660 | function rather than going via the plt. If people want | |
8661 | function pointer comparisons to work as expected then they | |
8662 | should avoid writing weird assembly. */ | |
a06ea964 NC |
8663 | if (SYMBOL_CALLS_LOCAL (info, h)) |
8664 | { | |
8665 | struct elf_dyn_relocs **pp; | |
8666 | ||
8667 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) | |
8668 | { | |
8669 | p->count -= p->pc_count; | |
8670 | p->pc_count = 0; | |
8671 | if (p->count == 0) | |
8672 | *pp = p->next; | |
8673 | else | |
8674 | pp = &p->next; | |
8675 | } | |
8676 | } | |
8677 | ||
8678 | /* Also discard relocs on undefined weak syms with non-default | |
07d6d2b8 | 8679 | visibility. */ |
a06ea964 NC |
8680 | if (eh->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak) |
8681 | { | |
ddb7fd0f L |
8682 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
8683 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
a06ea964 NC |
8684 | eh->dyn_relocs = NULL; |
8685 | ||
8686 | /* Make sure undefined weak symbols are output as a dynamic | |
8687 | symbol in PIEs. */ | |
8688 | else if (h->dynindx == -1 | |
8689 | && !h->forced_local | |
ff07562f | 8690 | && h->root.type == bfd_link_hash_undefweak |
a06ea964 NC |
8691 | && !bfd_elf_link_record_dynamic_symbol (info, h)) |
8692 | return FALSE; | |
8693 | } | |
8694 | ||
8695 | } | |
8696 | else if (ELIMINATE_COPY_RELOCS) | |
8697 | { | |
8698 | /* For the non-shared case, discard space for relocs against | |
07d6d2b8 AM |
8699 | symbols which turn out to need copy relocs or are not |
8700 | dynamic. */ | |
a06ea964 NC |
8701 | |
8702 | if (!h->non_got_ref | |
8703 | && ((h->def_dynamic | |
8704 | && !h->def_regular) | |
8705 | || (htab->root.dynamic_sections_created | |
8706 | && (h->root.type == bfd_link_hash_undefweak | |
8707 | || h->root.type == bfd_link_hash_undefined)))) | |
8708 | { | |
8709 | /* Make sure this symbol is output as a dynamic symbol. | |
8710 | Undefined weak syms won't yet be marked as dynamic. */ | |
8711 | if (h->dynindx == -1 | |
8712 | && !h->forced_local | |
ff07562f | 8713 | && h->root.type == bfd_link_hash_undefweak |
a06ea964 NC |
8714 | && !bfd_elf_link_record_dynamic_symbol (info, h)) |
8715 | return FALSE; | |
8716 | ||
8717 | /* If that succeeded, we know we'll be keeping all the | |
8718 | relocs. */ | |
8719 | if (h->dynindx != -1) | |
8720 | goto keep; | |
8721 | } | |
8722 | ||
8723 | eh->dyn_relocs = NULL; | |
8724 | ||
8725 | keep:; | |
8726 | } | |
8727 | ||
8728 | /* Finally, allocate space. */ | |
8729 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
8730 | { | |
8731 | asection *sreloc; | |
8732 | ||
8733 | sreloc = elf_section_data (p->sec)->sreloc; | |
8734 | ||
8735 | BFD_ASSERT (sreloc != NULL); | |
8736 | ||
8737 | sreloc->size += p->count * RELOC_SIZE (htab); | |
8738 | } | |
8739 | ||
8740 | return TRUE; | |
8741 | } | |
8742 | ||
1419bbe5 WN |
8743 | /* Allocate space in .plt, .got and associated reloc sections for |
8744 | ifunc dynamic relocs. */ | |
8745 | ||
8746 | static bfd_boolean | |
8747 | elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h, | |
8748 | void *inf) | |
8749 | { | |
8750 | struct bfd_link_info *info; | |
8751 | struct elf_aarch64_link_hash_table *htab; | |
8752 | struct elf_aarch64_link_hash_entry *eh; | |
8753 | ||
8754 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
8755 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
8756 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
8757 | ||
8758 | There is no need to process bfd_link_hash_indirect symbols here | |
8759 | because we will also be presented with the concrete instance of | |
8760 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been | |
8761 | called to copy all relevant data from the generic to the concrete | |
2d0ca824 | 8762 | symbol instance. */ |
1419bbe5 WN |
8763 | if (h->root.type == bfd_link_hash_indirect) |
8764 | return TRUE; | |
8765 | ||
8766 | if (h->root.type == bfd_link_hash_warning) | |
8767 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8768 | ||
8769 | info = (struct bfd_link_info *) inf; | |
8770 | htab = elf_aarch64_hash_table (info); | |
8771 | ||
8772 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
8773 | ||
8774 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it | |
8775 | here if it is defined and referenced in a non-shared object. */ | |
8776 | if (h->type == STT_GNU_IFUNC | |
8777 | && h->def_regular) | |
8778 | return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, | |
8779 | &eh->dyn_relocs, | |
2df3368d | 8780 | NULL, |
1419bbe5 WN |
8781 | htab->plt_entry_size, |
8782 | htab->plt_header_size, | |
233cc9c1 L |
8783 | GOT_ENTRY_SIZE, |
8784 | FALSE); | |
1419bbe5 WN |
8785 | return TRUE; |
8786 | } | |
8787 | ||
8788 | /* Allocate space in .plt, .got and associated reloc sections for | |
8789 | local dynamic relocs. */ | |
8790 | ||
8791 | static bfd_boolean | |
8792 | elfNN_aarch64_allocate_local_dynrelocs (void **slot, void *inf) | |
8793 | { | |
8794 | struct elf_link_hash_entry *h | |
8795 | = (struct elf_link_hash_entry *) *slot; | |
8796 | ||
8797 | if (h->type != STT_GNU_IFUNC | |
8798 | || !h->def_regular | |
8799 | || !h->ref_regular | |
8800 | || !h->forced_local | |
8801 | || h->root.type != bfd_link_hash_defined) | |
8802 | abort (); | |
8803 | ||
8804 | return elfNN_aarch64_allocate_dynrelocs (h, inf); | |
8805 | } | |
8806 | ||
8807 | /* Allocate space in .plt, .got and associated reloc sections for | |
8808 | local ifunc dynamic relocs. */ | |
8809 | ||
8810 | static bfd_boolean | |
8811 | elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf) | |
8812 | { | |
8813 | struct elf_link_hash_entry *h | |
8814 | = (struct elf_link_hash_entry *) *slot; | |
8815 | ||
8816 | if (h->type != STT_GNU_IFUNC | |
8817 | || !h->def_regular | |
8818 | || !h->ref_regular | |
8819 | || !h->forced_local | |
8820 | || h->root.type != bfd_link_hash_defined) | |
8821 | abort (); | |
8822 | ||
8823 | return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf); | |
8824 | } | |
a06ea964 | 8825 | |
63c1f59d AM |
8826 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to |
8827 | read-only sections. */ | |
c2170589 JW |
8828 | |
8829 | static bfd_boolean | |
63c1f59d | 8830 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) |
c2170589 | 8831 | { |
63c1f59d | 8832 | asection *sec; |
c2170589 | 8833 | |
63c1f59d AM |
8834 | if (h->root.type == bfd_link_hash_indirect) |
8835 | return TRUE; | |
c2170589 | 8836 | |
63c1f59d AM |
8837 | sec = readonly_dynrelocs (h); |
8838 | if (sec != NULL) | |
8839 | { | |
8840 | struct bfd_link_info *info = (struct bfd_link_info *) info_p; | |
c2170589 | 8841 | |
63c1f59d AM |
8842 | info->flags |= DF_TEXTREL; |
8843 | info->callbacks->minfo | |
c1c8c1ef | 8844 | (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), |
63c1f59d | 8845 | sec->owner, h->root.root.string, sec); |
c2170589 | 8846 | |
63c1f59d AM |
8847 | /* Not an error, just cut short the traversal. */ |
8848 | return FALSE; | |
c2170589 JW |
8849 | } |
8850 | return TRUE; | |
8851 | } | |
8852 | ||
a06ea964 NC |
8853 | /* This is the most important function of all . Innocuosly named |
8854 | though ! */ | |
2d0ca824 | 8855 | |
a06ea964 | 8856 | static bfd_boolean |
cec5225b | 8857 | elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
8858 | struct bfd_link_info *info) |
8859 | { | |
cec5225b | 8860 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
8861 | bfd *dynobj; |
8862 | asection *s; | |
8863 | bfd_boolean relocs; | |
8864 | bfd *ibfd; | |
8865 | ||
cec5225b | 8866 | htab = elf_aarch64_hash_table ((info)); |
a06ea964 NC |
8867 | dynobj = htab->root.dynobj; |
8868 | ||
8869 | BFD_ASSERT (dynobj != NULL); | |
8870 | ||
8871 | if (htab->root.dynamic_sections_created) | |
8872 | { | |
9b8b325a | 8873 | if (bfd_link_executable (info) && !info->nointerp) |
a06ea964 NC |
8874 | { |
8875 | s = bfd_get_linker_section (dynobj, ".interp"); | |
8876 | if (s == NULL) | |
8877 | abort (); | |
8878 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
8879 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
8880 | } | |
8881 | } | |
8882 | ||
8883 | /* Set up .got offsets for local syms, and space for local dynamic | |
8884 | relocs. */ | |
c72f2fb2 | 8885 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
a06ea964 NC |
8886 | { |
8887 | struct elf_aarch64_local_symbol *locals = NULL; | |
8888 | Elf_Internal_Shdr *symtab_hdr; | |
8889 | asection *srel; | |
8890 | unsigned int i; | |
8891 | ||
8892 | if (!is_aarch64_elf (ibfd)) | |
8893 | continue; | |
8894 | ||
8895 | for (s = ibfd->sections; s != NULL; s = s->next) | |
8896 | { | |
8897 | struct elf_dyn_relocs *p; | |
8898 | ||
8899 | for (p = (struct elf_dyn_relocs *) | |
8900 | (elf_section_data (s)->local_dynrel); p != NULL; p = p->next) | |
8901 | { | |
8902 | if (!bfd_is_abs_section (p->sec) | |
8903 | && bfd_is_abs_section (p->sec->output_section)) | |
8904 | { | |
8905 | /* Input section has been discarded, either because | |
8906 | it is a copy of a linkonce section or due to | |
8907 | linker script /DISCARD/, so we'll be discarding | |
8908 | the relocs too. */ | |
8909 | } | |
8910 | else if (p->count != 0) | |
8911 | { | |
8912 | srel = elf_section_data (p->sec)->sreloc; | |
8913 | srel->size += p->count * RELOC_SIZE (htab); | |
8914 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
8915 | info->flags |= DF_TEXTREL; | |
8916 | } | |
8917 | } | |
8918 | } | |
8919 | ||
cec5225b | 8920 | locals = elf_aarch64_locals (ibfd); |
a06ea964 NC |
8921 | if (!locals) |
8922 | continue; | |
8923 | ||
8924 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
8925 | srel = htab->root.srelgot; | |
8926 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
8927 | { | |
8928 | locals[i].got_offset = (bfd_vma) - 1; | |
8929 | locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
8930 | if (locals[i].got_refcount > 0) | |
8931 | { | |
8932 | unsigned got_type = locals[i].got_type; | |
8933 | if (got_type & GOT_TLSDESC_GD) | |
8934 | { | |
8935 | locals[i].tlsdesc_got_jump_table_offset = | |
8936 | (htab->root.sgotplt->size | |
8937 | - aarch64_compute_jump_table_size (htab)); | |
8938 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
8939 | locals[i].got_offset = (bfd_vma) - 2; | |
8940 | } | |
8941 | ||
8942 | if (got_type & GOT_TLS_GD) | |
8943 | { | |
8944 | locals[i].got_offset = htab->root.sgot->size; | |
8945 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
8946 | } | |
8947 | ||
b53b1bed JW |
8948 | if (got_type & GOT_TLS_IE |
8949 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
8950 | { |
8951 | locals[i].got_offset = htab->root.sgot->size; | |
8952 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8953 | } | |
8954 | ||
8955 | if (got_type == GOT_UNKNOWN) | |
8956 | { | |
8957 | } | |
8958 | ||
0e1862bb | 8959 | if (bfd_link_pic (info)) |
a06ea964 NC |
8960 | { |
8961 | if (got_type & GOT_TLSDESC_GD) | |
8962 | { | |
8963 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8964 | /* Note RELOC_COUNT not incremented here! */ | |
8965 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
8966 | } | |
8967 | ||
8968 | if (got_type & GOT_TLS_GD) | |
8969 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
8970 | ||
b53b1bed JW |
8971 | if (got_type & GOT_TLS_IE |
8972 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
8973 | htab->root.srelgot->size += RELOC_SIZE (htab); |
8974 | } | |
8975 | } | |
8976 | else | |
8977 | { | |
8978 | locals[i].got_refcount = (bfd_vma) - 1; | |
8979 | } | |
8980 | } | |
8981 | } | |
8982 | ||
8983 | ||
8984 | /* Allocate global sym .plt and .got entries, and space for global | |
8985 | sym dynamic relocs. */ | |
cec5225b | 8986 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs, |
a06ea964 NC |
8987 | info); |
8988 | ||
1419bbe5 WN |
8989 | /* Allocate global ifunc sym .plt and .got entries, and space for global |
8990 | ifunc sym dynamic relocs. */ | |
8991 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs, | |
8992 | info); | |
8993 | ||
8994 | /* Allocate .plt and .got entries, and space for local symbols. */ | |
8995 | htab_traverse (htab->loc_hash_table, | |
8996 | elfNN_aarch64_allocate_local_dynrelocs, | |
8997 | info); | |
8998 | ||
8999 | /* Allocate .plt and .got entries, and space for local ifunc symbols. */ | |
9000 | htab_traverse (htab->loc_hash_table, | |
9001 | elfNN_aarch64_allocate_local_ifunc_dynrelocs, | |
9002 | info); | |
a06ea964 NC |
9003 | |
9004 | /* For every jump slot reserved in the sgotplt, reloc_count is | |
9005 | incremented. However, when we reserve space for TLS descriptors, | |
9006 | it's not incremented, so in order to compute the space reserved | |
9007 | for them, it suffices to multiply the reloc count by the jump | |
9008 | slot size. */ | |
9009 | ||
9010 | if (htab->root.srelplt) | |
8847944f | 9011 | htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab); |
a06ea964 NC |
9012 | |
9013 | if (htab->tlsdesc_plt) | |
9014 | { | |
9015 | if (htab->root.splt->size == 0) | |
37c18eed | 9016 | htab->root.splt->size += htab->plt_header_size; |
a06ea964 | 9017 | |
a06ea964 | 9018 | /* If we're not using lazy TLS relocations, don't generate the |
ce12121b | 9019 | GOT and PLT entry required. */ |
a06ea964 NC |
9020 | if (!(info->flags & DF_BIND_NOW)) |
9021 | { | |
ce12121b TC |
9022 | htab->tlsdesc_plt = htab->root.splt->size; |
9023 | htab->root.splt->size += htab->tlsdesc_plt_entry_size; | |
9024 | ||
a06ea964 NC |
9025 | htab->dt_tlsdesc_got = htab->root.sgot->size; |
9026 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
9027 | } | |
9028 | } | |
9029 | ||
68fcca92 | 9030 | /* Init mapping symbols information to use later to distingush between |
4106101c MS |
9031 | code and data while scanning for errata. */ |
9032 | if (htab->fix_erratum_835769 || htab->fix_erratum_843419) | |
68fcca92 JW |
9033 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
9034 | { | |
9035 | if (!is_aarch64_elf (ibfd)) | |
9036 | continue; | |
9037 | bfd_elfNN_aarch64_init_maps (ibfd); | |
9038 | } | |
9039 | ||
a06ea964 NC |
9040 | /* We now have determined the sizes of the various dynamic sections. |
9041 | Allocate memory for them. */ | |
9042 | relocs = FALSE; | |
9043 | for (s = dynobj->sections; s != NULL; s = s->next) | |
9044 | { | |
9045 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9046 | continue; | |
9047 | ||
9048 | if (s == htab->root.splt | |
9049 | || s == htab->root.sgot | |
9050 | || s == htab->root.sgotplt | |
9051 | || s == htab->root.iplt | |
9d19e4fd | 9052 | || s == htab->root.igotplt |
5474d94f AM |
9053 | || s == htab->root.sdynbss |
9054 | || s == htab->root.sdynrelro) | |
a06ea964 NC |
9055 | { |
9056 | /* Strip this section if we don't need it; see the | |
9057 | comment below. */ | |
9058 | } | |
9059 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) | |
9060 | { | |
9061 | if (s->size != 0 && s != htab->root.srelplt) | |
9062 | relocs = TRUE; | |
9063 | ||
9064 | /* We use the reloc_count field as a counter if we need | |
9065 | to copy relocs into the output file. */ | |
9066 | if (s != htab->root.srelplt) | |
9067 | s->reloc_count = 0; | |
9068 | } | |
9069 | else | |
9070 | { | |
9071 | /* It's not one of our sections, so don't allocate space. */ | |
9072 | continue; | |
9073 | } | |
9074 | ||
9075 | if (s->size == 0) | |
9076 | { | |
9077 | /* If we don't need this section, strip it from the | |
9078 | output file. This is mostly to handle .rela.bss and | |
9079 | .rela.plt. We must create both sections in | |
9080 | create_dynamic_sections, because they must be created | |
9081 | before the linker maps input sections to output | |
9082 | sections. The linker does that before | |
9083 | adjust_dynamic_symbol is called, and it is that | |
9084 | function which decides whether anything needs to go | |
9085 | into these sections. */ | |
a06ea964 NC |
9086 | s->flags |= SEC_EXCLUDE; |
9087 | continue; | |
9088 | } | |
9089 | ||
9090 | if ((s->flags & SEC_HAS_CONTENTS) == 0) | |
9091 | continue; | |
9092 | ||
9093 | /* Allocate memory for the section contents. We use bfd_zalloc | |
07d6d2b8 AM |
9094 | here in case unused entries are not reclaimed before the |
9095 | section's contents are written out. This should not happen, | |
9096 | but this way if it does, we get a R_AARCH64_NONE reloc instead | |
9097 | of garbage. */ | |
a06ea964 NC |
9098 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
9099 | if (s->contents == NULL) | |
9100 | return FALSE; | |
9101 | } | |
9102 | ||
9103 | if (htab->root.dynamic_sections_created) | |
9104 | { | |
9105 | /* Add some entries to the .dynamic section. We fill in the | |
07d6d2b8 AM |
9106 | values later, in elfNN_aarch64_finish_dynamic_sections, but we |
9107 | must add the entries now so that we get the correct size for | |
9108 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
9109 | dynamic linker and used by the debugger. */ | |
a06ea964 NC |
9110 | #define add_dynamic_entry(TAG, VAL) \ |
9111 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
9112 | ||
0e1862bb | 9113 | if (bfd_link_executable (info)) |
a06ea964 NC |
9114 | { |
9115 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
9116 | return FALSE; | |
9117 | } | |
9118 | ||
9119 | if (htab->root.splt->size != 0) | |
9120 | { | |
9121 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
9122 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
9123 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
9124 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
9125 | return FALSE; | |
9126 | ||
9127 | if (htab->tlsdesc_plt | |
ce12121b | 9128 | && !(info->flags & DF_BIND_NOW) |
a06ea964 NC |
9129 | && (!add_dynamic_entry (DT_TLSDESC_PLT, 0) |
9130 | || !add_dynamic_entry (DT_TLSDESC_GOT, 0))) | |
9131 | return FALSE; | |
37c18eed | 9132 | |
1dbade74 SD |
9133 | if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_BTI_PAC) |
9134 | && (!add_dynamic_entry (DT_AARCH64_BTI_PLT, 0) | |
9135 | || !add_dynamic_entry (DT_AARCH64_PAC_PLT, 0))) | |
9136 | return FALSE; | |
9137 | ||
9138 | else if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_BTI) | |
9139 | && !add_dynamic_entry (DT_AARCH64_BTI_PLT, 0)) | |
9140 | return FALSE; | |
9141 | ||
9142 | else if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_PAC) | |
9143 | && !add_dynamic_entry (DT_AARCH64_PAC_PLT, 0)) | |
37c18eed | 9144 | return FALSE; |
a06ea964 NC |
9145 | } |
9146 | ||
9147 | if (relocs) | |
9148 | { | |
9149 | if (!add_dynamic_entry (DT_RELA, 0) | |
9150 | || !add_dynamic_entry (DT_RELASZ, 0) | |
9151 | || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) | |
9152 | return FALSE; | |
9153 | ||
9154 | /* If any dynamic relocs apply to a read-only section, | |
9155 | then we need a DT_TEXTREL entry. */ | |
c2170589 | 9156 | if ((info->flags & DF_TEXTREL) == 0) |
63c1f59d | 9157 | elf_link_hash_traverse (&htab->root, maybe_set_textrel, info); |
c2170589 | 9158 | |
a06ea964 NC |
9159 | if ((info->flags & DF_TEXTREL) != 0) |
9160 | { | |
9161 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
9162 | return FALSE; | |
9163 | } | |
9164 | } | |
9165 | } | |
9166 | #undef add_dynamic_entry | |
9167 | ||
9168 | return TRUE; | |
a06ea964 NC |
9169 | } |
9170 | ||
9171 | static inline void | |
caed7120 YZ |
9172 | elf_aarch64_update_plt_entry (bfd *output_bfd, |
9173 | bfd_reloc_code_real_type r_type, | |
9174 | bfd_byte *plt_entry, bfd_vma value) | |
a06ea964 | 9175 | { |
caed7120 YZ |
9176 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type); |
9177 | ||
1d75a8e2 NC |
9178 | /* FIXME: We should check the return value from this function call. */ |
9179 | (void) _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value); | |
a06ea964 NC |
9180 | } |
9181 | ||
9182 | static void | |
cec5225b YZ |
9183 | elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h, |
9184 | struct elf_aarch64_link_hash_table | |
1419bbe5 WN |
9185 | *htab, bfd *output_bfd, |
9186 | struct bfd_link_info *info) | |
a06ea964 NC |
9187 | { |
9188 | bfd_byte *plt_entry; | |
9189 | bfd_vma plt_index; | |
9190 | bfd_vma got_offset; | |
9191 | bfd_vma gotplt_entry_address; | |
9192 | bfd_vma plt_entry_address; | |
9193 | Elf_Internal_Rela rela; | |
9194 | bfd_byte *loc; | |
1419bbe5 WN |
9195 | asection *plt, *gotplt, *relplt; |
9196 | ||
9197 | /* When building a static executable, use .iplt, .igot.plt and | |
9198 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
9199 | if (htab->root.splt != NULL) | |
9200 | { | |
9201 | plt = htab->root.splt; | |
9202 | gotplt = htab->root.sgotplt; | |
9203 | relplt = htab->root.srelplt; | |
9204 | } | |
9205 | else | |
9206 | { | |
9207 | plt = htab->root.iplt; | |
9208 | gotplt = htab->root.igotplt; | |
9209 | relplt = htab->root.irelplt; | |
9210 | } | |
9211 | ||
9212 | /* Get the index in the procedure linkage table which | |
9213 | corresponds to this symbol. This is the index of this symbol | |
9214 | in all the symbols for which we are making plt entries. The | |
9215 | first entry in the procedure linkage table is reserved. | |
a06ea964 | 9216 | |
1419bbe5 WN |
9217 | Get the offset into the .got table of the entry that |
9218 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE | |
9219 | bytes. The first three are reserved for the dynamic linker. | |
692e2b8b | 9220 | |
1419bbe5 WN |
9221 | For static executables, we don't reserve anything. */ |
9222 | ||
9223 | if (plt == htab->root.splt) | |
9224 | { | |
9225 | plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size; | |
9226 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
9227 | } | |
9228 | else | |
9229 | { | |
9230 | plt_index = h->plt.offset / htab->plt_entry_size; | |
9231 | got_offset = plt_index * GOT_ENTRY_SIZE; | |
9232 | } | |
9233 | ||
9234 | plt_entry = plt->contents + h->plt.offset; | |
9235 | plt_entry_address = plt->output_section->vma | |
f44a1f8e | 9236 | + plt->output_offset + h->plt.offset; |
1419bbe5 WN |
9237 | gotplt_entry_address = gotplt->output_section->vma + |
9238 | gotplt->output_offset + got_offset; | |
a06ea964 NC |
9239 | |
9240 | /* Copy in the boiler-plate for the PLTn entry. */ | |
37c18eed SD |
9241 | memcpy (plt_entry, htab->plt_entry, htab->plt_entry_size); |
9242 | ||
9243 | /* First instruction in BTI enabled PLT stub is a BTI | |
9244 | instruction so skip it. */ | |
9245 | if (elf_aarch64_tdata (output_bfd)->plt_type & PLT_BTI | |
9246 | && elf_elfheader (output_bfd)->e_type == ET_EXEC) | |
9247 | plt_entry = plt_entry + 4; | |
a06ea964 NC |
9248 | |
9249 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
9250 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 YZ |
9251 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
9252 | plt_entry, | |
9253 | PG (gotplt_entry_address) - | |
9254 | PG (plt_entry_address)); | |
a06ea964 NC |
9255 | |
9256 | /* Fill in the lo12 bits for the load from the pltgot. */ | |
caed7120 YZ |
9257 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
9258 | plt_entry + 4, | |
9259 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 | 9260 | |
9aff4b7a | 9261 | /* Fill in the lo12 bits for the add from the pltgot entry. */ |
caed7120 YZ |
9262 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
9263 | plt_entry + 8, | |
9264 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 NC |
9265 | |
9266 | /* All the GOTPLT Entries are essentially initialized to PLT0. */ | |
cec5225b | 9267 | bfd_put_NN (output_bfd, |
1419bbe5 WN |
9268 | plt->output_section->vma + plt->output_offset, |
9269 | gotplt->contents + got_offset); | |
a06ea964 | 9270 | |
a06ea964 | 9271 | rela.r_offset = gotplt_entry_address; |
1419bbe5 WN |
9272 | |
9273 | if (h->dynindx == -1 | |
0e1862bb | 9274 | || ((bfd_link_executable (info) |
1419bbe5 WN |
9275 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
9276 | && h->def_regular | |
9277 | && h->type == STT_GNU_IFUNC)) | |
9278 | { | |
9279 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
9280 | R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */ | |
9281 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
9282 | rela.r_addend = (h->root.u.def.value | |
9283 | + h->root.u.def.section->output_section->vma | |
9284 | + h->root.u.def.section->output_offset); | |
9285 | } | |
9286 | else | |
9287 | { | |
9288 | /* Fill in the entry in the .rela.plt section. */ | |
9289 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT)); | |
9290 | rela.r_addend = 0; | |
9291 | } | |
a06ea964 NC |
9292 | |
9293 | /* Compute the relocation entry to used based on PLT index and do | |
9294 | not adjust reloc_count. The reloc_count has already been adjusted | |
9295 | to account for this entry. */ | |
1419bbe5 | 9296 | loc = relplt->contents + plt_index * RELOC_SIZE (htab); |
cec5225b | 9297 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
9298 | } |
9299 | ||
9300 | /* Size sections even though they're not dynamic. We use it to setup | |
9301 | _TLS_MODULE_BASE_, if needed. */ | |
9302 | ||
9303 | static bfd_boolean | |
cec5225b | 9304 | elfNN_aarch64_always_size_sections (bfd *output_bfd, |
a06ea964 NC |
9305 | struct bfd_link_info *info) |
9306 | { | |
9307 | asection *tls_sec; | |
9308 | ||
0e1862bb | 9309 | if (bfd_link_relocatable (info)) |
a06ea964 NC |
9310 | return TRUE; |
9311 | ||
9312 | tls_sec = elf_hash_table (info)->tls_sec; | |
9313 | ||
9314 | if (tls_sec) | |
9315 | { | |
9316 | struct elf_link_hash_entry *tlsbase; | |
9317 | ||
9318 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
9319 | "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE); | |
9320 | ||
9321 | if (tlsbase) | |
9322 | { | |
9323 | struct bfd_link_hash_entry *h = NULL; | |
9324 | const struct elf_backend_data *bed = | |
9325 | get_elf_backend_data (output_bfd); | |
9326 | ||
9327 | if (!(_bfd_generic_link_add_one_symbol | |
9328 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
9329 | tls_sec, 0, NULL, FALSE, bed->collect, &h))) | |
9330 | return FALSE; | |
9331 | ||
9332 | tlsbase->type = STT_TLS; | |
9333 | tlsbase = (struct elf_link_hash_entry *) h; | |
9334 | tlsbase->def_regular = 1; | |
9335 | tlsbase->other = STV_HIDDEN; | |
9336 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
9337 | } | |
9338 | } | |
9339 | ||
9340 | return TRUE; | |
9341 | } | |
9342 | ||
9343 | /* Finish up dynamic symbol handling. We set the contents of various | |
9344 | dynamic sections here. */ | |
2d0ca824 | 9345 | |
a06ea964 | 9346 | static bfd_boolean |
cec5225b | 9347 | elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd, |
a06ea964 NC |
9348 | struct bfd_link_info *info, |
9349 | struct elf_link_hash_entry *h, | |
9350 | Elf_Internal_Sym *sym) | |
9351 | { | |
cec5225b YZ |
9352 | struct elf_aarch64_link_hash_table *htab; |
9353 | htab = elf_aarch64_hash_table (info); | |
a06ea964 NC |
9354 | |
9355 | if (h->plt.offset != (bfd_vma) - 1) | |
9356 | { | |
1419bbe5 WN |
9357 | asection *plt, *gotplt, *relplt; |
9358 | ||
a06ea964 | 9359 | /* This symbol has an entry in the procedure linkage table. Set |
07d6d2b8 | 9360 | it up. */ |
a06ea964 | 9361 | |
1419bbe5 WN |
9362 | /* When building a static executable, use .iplt, .igot.plt and |
9363 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
9364 | if (htab->root.splt != NULL) | |
9365 | { | |
9366 | plt = htab->root.splt; | |
9367 | gotplt = htab->root.sgotplt; | |
9368 | relplt = htab->root.srelplt; | |
9369 | } | |
9370 | else | |
9371 | { | |
9372 | plt = htab->root.iplt; | |
9373 | gotplt = htab->root.igotplt; | |
9374 | relplt = htab->root.irelplt; | |
9375 | } | |
9376 | ||
9377 | /* This symbol has an entry in the procedure linkage table. Set | |
9378 | it up. */ | |
9379 | if ((h->dynindx == -1 | |
0e1862bb | 9380 | && !((h->forced_local || bfd_link_executable (info)) |
1419bbe5 WN |
9381 | && h->def_regular |
9382 | && h->type == STT_GNU_IFUNC)) | |
9383 | || plt == NULL | |
9384 | || gotplt == NULL | |
9385 | || relplt == NULL) | |
f955cccf | 9386 | return FALSE; |
a06ea964 | 9387 | |
1419bbe5 | 9388 | elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info); |
a06ea964 NC |
9389 | if (!h->def_regular) |
9390 | { | |
9391 | /* Mark the symbol as undefined, rather than as defined in | |
46b87d49 | 9392 | the .plt section. */ |
a06ea964 | 9393 | sym->st_shndx = SHN_UNDEF; |
46b87d49 WN |
9394 | /* If the symbol is weak we need to clear the value. |
9395 | Otherwise, the PLT entry would provide a definition for | |
9396 | the symbol even if the symbol wasn't defined anywhere, | |
9397 | and so the symbol would never be NULL. Leave the value if | |
9398 | there were any relocations where pointer equality matters | |
9399 | (this is a clue for the dynamic linker, to make function | |
9400 | pointer comparisons work between an application and shared | |
9401 | library). */ | |
9402 | if (!h->ref_regular_nonweak || !h->pointer_equality_needed) | |
9403 | sym->st_value = 0; | |
a06ea964 NC |
9404 | } |
9405 | } | |
9406 | ||
9407 | if (h->got.offset != (bfd_vma) - 1 | |
a377ae2a SN |
9408 | && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL |
9409 | /* Undefined weak symbol in static PIE resolves to 0 without | |
9410 | any dynamic relocations. */ | |
9411 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
a06ea964 NC |
9412 | { |
9413 | Elf_Internal_Rela rela; | |
9414 | bfd_byte *loc; | |
9415 | ||
9416 | /* This symbol has an entry in the global offset table. Set it | |
07d6d2b8 | 9417 | up. */ |
a06ea964 NC |
9418 | if (htab->root.sgot == NULL || htab->root.srelgot == NULL) |
9419 | abort (); | |
9420 | ||
9421 | rela.r_offset = (htab->root.sgot->output_section->vma | |
9422 | + htab->root.sgot->output_offset | |
9423 | + (h->got.offset & ~(bfd_vma) 1)); | |
9424 | ||
49206388 WN |
9425 | if (h->def_regular |
9426 | && h->type == STT_GNU_IFUNC) | |
9427 | { | |
0e1862bb | 9428 | if (bfd_link_pic (info)) |
49206388 WN |
9429 | { |
9430 | /* Generate R_AARCH64_GLOB_DAT. */ | |
9431 | goto do_glob_dat; | |
9432 | } | |
9433 | else | |
9434 | { | |
9435 | asection *plt; | |
9436 | ||
9437 | if (!h->pointer_equality_needed) | |
9438 | abort (); | |
9439 | ||
9440 | /* For non-shared object, we can't use .got.plt, which | |
9441 | contains the real function address if we need pointer | |
9442 | equality. We load the GOT entry with the PLT entry. */ | |
9443 | plt = htab->root.splt ? htab->root.splt : htab->root.iplt; | |
9444 | bfd_put_NN (output_bfd, (plt->output_section->vma | |
9445 | + plt->output_offset | |
9446 | + h->plt.offset), | |
9447 | htab->root.sgot->contents | |
9448 | + (h->got.offset & ~(bfd_vma) 1)); | |
9449 | return TRUE; | |
9450 | } | |
9451 | } | |
0e1862bb | 9452 | else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h)) |
a06ea964 | 9453 | { |
0ee3a6db | 9454 | if (!(h->def_regular || ELF_COMMON_DEF_P (h))) |
a06ea964 NC |
9455 | return FALSE; |
9456 | ||
9457 | BFD_ASSERT ((h->got.offset & 1) != 0); | |
a6bb11b2 | 9458 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); |
a06ea964 NC |
9459 | rela.r_addend = (h->root.u.def.value |
9460 | + h->root.u.def.section->output_section->vma | |
9461 | + h->root.u.def.section->output_offset); | |
9462 | } | |
9463 | else | |
9464 | { | |
49206388 | 9465 | do_glob_dat: |
a06ea964 | 9466 | BFD_ASSERT ((h->got.offset & 1) == 0); |
cec5225b | 9467 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 | 9468 | htab->root.sgot->contents + h->got.offset); |
a6bb11b2 | 9469 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT)); |
a06ea964 NC |
9470 | rela.r_addend = 0; |
9471 | } | |
9472 | ||
9473 | loc = htab->root.srelgot->contents; | |
9474 | loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 9475 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
9476 | } |
9477 | ||
9478 | if (h->needs_copy) | |
9479 | { | |
9480 | Elf_Internal_Rela rela; | |
5474d94f | 9481 | asection *s; |
a06ea964 NC |
9482 | bfd_byte *loc; |
9483 | ||
9484 | /* This symbol needs a copy reloc. Set it up. */ | |
a06ea964 NC |
9485 | if (h->dynindx == -1 |
9486 | || (h->root.type != bfd_link_hash_defined | |
9487 | && h->root.type != bfd_link_hash_defweak) | |
9d19e4fd | 9488 | || htab->root.srelbss == NULL) |
a06ea964 NC |
9489 | abort (); |
9490 | ||
9491 | rela.r_offset = (h->root.u.def.value | |
9492 | + h->root.u.def.section->output_section->vma | |
9493 | + h->root.u.def.section->output_offset); | |
a6bb11b2 | 9494 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY)); |
a06ea964 | 9495 | rela.r_addend = 0; |
afbf7e8e | 9496 | if (h->root.u.def.section == htab->root.sdynrelro) |
5474d94f AM |
9497 | s = htab->root.sreldynrelro; |
9498 | else | |
9499 | s = htab->root.srelbss; | |
9500 | loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 9501 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
9502 | } |
9503 | ||
9504 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may | |
9505 | be NULL for local symbols. */ | |
9506 | if (sym != NULL | |
9637f6ef | 9507 | && (h == elf_hash_table (info)->hdynamic |
a06ea964 NC |
9508 | || h == elf_hash_table (info)->hgot)) |
9509 | sym->st_shndx = SHN_ABS; | |
9510 | ||
9511 | return TRUE; | |
9512 | } | |
9513 | ||
1419bbe5 WN |
9514 | /* Finish up local dynamic symbol handling. We set the contents of |
9515 | various dynamic sections here. */ | |
9516 | ||
9517 | static bfd_boolean | |
9518 | elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf) | |
9519 | { | |
9520 | struct elf_link_hash_entry *h | |
9521 | = (struct elf_link_hash_entry *) *slot; | |
9522 | struct bfd_link_info *info | |
9523 | = (struct bfd_link_info *) inf; | |
9524 | ||
9525 | return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd, | |
9526 | info, h, NULL); | |
9527 | } | |
9528 | ||
a06ea964 | 9529 | static void |
cec5225b YZ |
9530 | elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED, |
9531 | struct elf_aarch64_link_hash_table | |
a06ea964 NC |
9532 | *htab) |
9533 | { | |
9534 | /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between | |
9535 | small and large plts and at the minute just generates | |
9536 | the small PLT. */ | |
9537 | ||
cec5225b | 9538 | /* PLT0 of the small PLT looks like this in ELF64 - |
a06ea964 NC |
9539 | stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack. |
9540 | adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT | |
9541 | ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the | |
9542 | // symbol resolver | |
9543 | add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the | |
9544 | // GOTPLT entry for this. | |
9545 | br x17 | |
cec5225b | 9546 | PLT0 will be slightly different in ELF32 due to different got entry |
2d0ca824 | 9547 | size. */ |
caed7120 | 9548 | bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */ |
a06ea964 NC |
9549 | bfd_vma plt_base; |
9550 | ||
9551 | ||
37c18eed SD |
9552 | memcpy (htab->root.splt->contents, htab->plt0_entry, |
9553 | htab->plt_header_size); | |
a06ea964 | 9554 | elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize = |
37c18eed | 9555 | htab->plt_header_size; |
a06ea964 | 9556 | |
caed7120 YZ |
9557 | plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma |
9558 | + htab->root.sgotplt->output_offset | |
9559 | + GOT_ENTRY_SIZE * 2); | |
a06ea964 NC |
9560 | |
9561 | plt_base = htab->root.splt->output_section->vma + | |
f44a1f8e | 9562 | htab->root.splt->output_offset; |
a06ea964 | 9563 | |
37c18eed SD |
9564 | /* First instruction in BTI enabled PLT stub is a BTI |
9565 | instruction so skip it. */ | |
9566 | bfd_byte *plt0_entry = htab->root.splt->contents; | |
9567 | if (elf_aarch64_tdata (output_bfd)->plt_type & PLT_BTI) | |
9568 | plt0_entry = plt0_entry + 4; | |
9569 | ||
a06ea964 NC |
9570 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. |
9571 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 | 9572 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
37c18eed | 9573 | plt0_entry + 4, |
caed7120 | 9574 | PG (plt_got_2nd_ent) - PG (plt_base + 4)); |
a06ea964 | 9575 | |
caed7120 | 9576 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
37c18eed | 9577 | plt0_entry + 8, |
caed7120 | 9578 | PG_OFFSET (plt_got_2nd_ent)); |
a06ea964 | 9579 | |
caed7120 | 9580 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
37c18eed | 9581 | plt0_entry + 12, |
caed7120 | 9582 | PG_OFFSET (plt_got_2nd_ent)); |
a06ea964 NC |
9583 | } |
9584 | ||
9585 | static bfd_boolean | |
cec5225b | 9586 | elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd, |
a06ea964 NC |
9587 | struct bfd_link_info *info) |
9588 | { | |
cec5225b | 9589 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
9590 | bfd *dynobj; |
9591 | asection *sdyn; | |
9592 | ||
cec5225b | 9593 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
9594 | dynobj = htab->root.dynobj; |
9595 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); | |
9596 | ||
9597 | if (htab->root.dynamic_sections_created) | |
9598 | { | |
cec5225b | 9599 | ElfNN_External_Dyn *dyncon, *dynconend; |
a06ea964 NC |
9600 | |
9601 | if (sdyn == NULL || htab->root.sgot == NULL) | |
9602 | abort (); | |
9603 | ||
cec5225b YZ |
9604 | dyncon = (ElfNN_External_Dyn *) sdyn->contents; |
9605 | dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size); | |
a06ea964 NC |
9606 | for (; dyncon < dynconend; dyncon++) |
9607 | { | |
9608 | Elf_Internal_Dyn dyn; | |
9609 | asection *s; | |
9610 | ||
cec5225b | 9611 | bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn); |
a06ea964 NC |
9612 | |
9613 | switch (dyn.d_tag) | |
9614 | { | |
9615 | default: | |
9616 | continue; | |
9617 | ||
9618 | case DT_PLTGOT: | |
9619 | s = htab->root.sgotplt; | |
9620 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
9621 | break; | |
9622 | ||
9623 | case DT_JMPREL: | |
4ade44b7 AM |
9624 | s = htab->root.srelplt; |
9625 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
a06ea964 NC |
9626 | break; |
9627 | ||
9628 | case DT_PLTRELSZ: | |
c955de36 | 9629 | s = htab->root.srelplt; |
a06ea964 NC |
9630 | dyn.d_un.d_val = s->size; |
9631 | break; | |
9632 | ||
a06ea964 NC |
9633 | case DT_TLSDESC_PLT: |
9634 | s = htab->root.splt; | |
9635 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
9636 | + htab->tlsdesc_plt; | |
9637 | break; | |
9638 | ||
9639 | case DT_TLSDESC_GOT: | |
9640 | s = htab->root.sgot; | |
ce12121b | 9641 | BFD_ASSERT (htab->dt_tlsdesc_got != (bfd_vma)-1); |
a06ea964 NC |
9642 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset |
9643 | + htab->dt_tlsdesc_got; | |
9644 | break; | |
9645 | } | |
9646 | ||
cec5225b | 9647 | bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon); |
a06ea964 NC |
9648 | } |
9649 | ||
9650 | } | |
9651 | ||
9652 | /* Fill in the special first entry in the procedure linkage table. */ | |
9653 | if (htab->root.splt && htab->root.splt->size > 0) | |
9654 | { | |
cec5225b | 9655 | elfNN_aarch64_init_small_plt0_entry (output_bfd, htab); |
a06ea964 NC |
9656 | |
9657 | elf_section_data (htab->root.splt->output_section)-> | |
9658 | this_hdr.sh_entsize = htab->plt_entry_size; | |
9659 | ||
9660 | ||
ce12121b | 9661 | if (htab->tlsdesc_plt && !(info->flags & DF_BIND_NOW)) |
a06ea964 | 9662 | { |
ce12121b | 9663 | BFD_ASSERT (htab->dt_tlsdesc_got != (bfd_vma)-1); |
cec5225b | 9664 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
9665 | htab->root.sgot->contents + htab->dt_tlsdesc_got); |
9666 | ||
37c18eed SD |
9667 | const bfd_byte *entry = elfNN_aarch64_tlsdesc_small_plt_entry; |
9668 | htab->tlsdesc_plt_entry_size = PLT_TLSDESC_ENTRY_SIZE; | |
9669 | ||
9670 | aarch64_plt_type type = elf_aarch64_tdata (output_bfd)->plt_type; | |
1dbade74 | 9671 | if (type == PLT_BTI || type == PLT_BTI_PAC) |
37c18eed SD |
9672 | { |
9673 | entry = elfNN_aarch64_tlsdesc_small_plt_bti_entry; | |
37c18eed SD |
9674 | } |
9675 | ||
a06ea964 | 9676 | memcpy (htab->root.splt->contents + htab->tlsdesc_plt, |
37c18eed | 9677 | entry, htab->tlsdesc_plt_entry_size); |
a06ea964 NC |
9678 | |
9679 | { | |
9680 | bfd_vma adrp1_addr = | |
9681 | htab->root.splt->output_section->vma | |
9682 | + htab->root.splt->output_offset + htab->tlsdesc_plt + 4; | |
9683 | ||
caed7120 | 9684 | bfd_vma adrp2_addr = adrp1_addr + 4; |
a06ea964 NC |
9685 | |
9686 | bfd_vma got_addr = | |
9687 | htab->root.sgot->output_section->vma | |
9688 | + htab->root.sgot->output_offset; | |
9689 | ||
9690 | bfd_vma pltgot_addr = | |
9691 | htab->root.sgotplt->output_section->vma | |
9692 | + htab->root.sgotplt->output_offset; | |
9693 | ||
9694 | bfd_vma dt_tlsdesc_got = got_addr + htab->dt_tlsdesc_got; | |
caed7120 YZ |
9695 | |
9696 | bfd_byte *plt_entry = | |
9697 | htab->root.splt->contents + htab->tlsdesc_plt; | |
a06ea964 | 9698 | |
37c18eed SD |
9699 | /* First instruction in BTI enabled PLT stub is a BTI |
9700 | instruction so skip it. */ | |
9701 | if (type & PLT_BTI) | |
9702 | { | |
9703 | plt_entry = plt_entry + 4; | |
9704 | adrp1_addr = adrp1_addr + 4; | |
9705 | adrp2_addr = adrp2_addr + 4; | |
9706 | } | |
9707 | ||
a06ea964 | 9708 | /* adrp x2, DT_TLSDESC_GOT */ |
caed7120 YZ |
9709 | elf_aarch64_update_plt_entry (output_bfd, |
9710 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
9711 | plt_entry + 4, | |
9712 | (PG (dt_tlsdesc_got) | |
9713 | - PG (adrp1_addr))); | |
a06ea964 NC |
9714 | |
9715 | /* adrp x3, 0 */ | |
caed7120 YZ |
9716 | elf_aarch64_update_plt_entry (output_bfd, |
9717 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
9718 | plt_entry + 8, | |
9719 | (PG (pltgot_addr) | |
9720 | - PG (adrp2_addr))); | |
a06ea964 NC |
9721 | |
9722 | /* ldr x2, [x2, #0] */ | |
caed7120 YZ |
9723 | elf_aarch64_update_plt_entry (output_bfd, |
9724 | BFD_RELOC_AARCH64_LDSTNN_LO12, | |
9725 | plt_entry + 12, | |
9726 | PG_OFFSET (dt_tlsdesc_got)); | |
a06ea964 NC |
9727 | |
9728 | /* add x3, x3, 0 */ | |
caed7120 YZ |
9729 | elf_aarch64_update_plt_entry (output_bfd, |
9730 | BFD_RELOC_AARCH64_ADD_LO12, | |
9731 | plt_entry + 16, | |
9732 | PG_OFFSET (pltgot_addr)); | |
a06ea964 NC |
9733 | } |
9734 | } | |
9735 | } | |
9736 | ||
9737 | if (htab->root.sgotplt) | |
9738 | { | |
9739 | if (bfd_is_abs_section (htab->root.sgotplt->output_section)) | |
9740 | { | |
4eca0228 | 9741 | _bfd_error_handler |
871b3ab2 | 9742 | (_("discarded output section: `%pA'"), htab->root.sgotplt); |
a06ea964 NC |
9743 | return FALSE; |
9744 | } | |
9745 | ||
9746 | /* Fill in the first three entries in the global offset table. */ | |
9747 | if (htab->root.sgotplt->size > 0) | |
9748 | { | |
8db339a6 MS |
9749 | bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents); |
9750 | ||
a06ea964 | 9751 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ |
cec5225b | 9752 | bfd_put_NN (output_bfd, |
a06ea964 NC |
9753 | (bfd_vma) 0, |
9754 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE); | |
cec5225b | 9755 | bfd_put_NN (output_bfd, |
a06ea964 NC |
9756 | (bfd_vma) 0, |
9757 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2); | |
9758 | } | |
9759 | ||
8db339a6 MS |
9760 | if (htab->root.sgot) |
9761 | { | |
9762 | if (htab->root.sgot->size > 0) | |
9763 | { | |
9764 | bfd_vma addr = | |
9765 | sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0; | |
9766 | bfd_put_NN (output_bfd, addr, htab->root.sgot->contents); | |
9767 | } | |
9768 | } | |
9769 | ||
a06ea964 NC |
9770 | elf_section_data (htab->root.sgotplt->output_section)-> |
9771 | this_hdr.sh_entsize = GOT_ENTRY_SIZE; | |
9772 | } | |
9773 | ||
9774 | if (htab->root.sgot && htab->root.sgot->size > 0) | |
9775 | elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize | |
9776 | = GOT_ENTRY_SIZE; | |
9777 | ||
1419bbe5 WN |
9778 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
9779 | htab_traverse (htab->loc_hash_table, | |
9780 | elfNN_aarch64_finish_local_dynamic_symbol, | |
9781 | info); | |
9782 | ||
a06ea964 NC |
9783 | return TRUE; |
9784 | } | |
9785 | ||
37c18eed SD |
9786 | /* Check if BTI enabled PLTs are needed. Returns the type needed. */ |
9787 | static aarch64_plt_type | |
9788 | get_plt_type (bfd *abfd) | |
9789 | { | |
9790 | aarch64_plt_type ret = PLT_NORMAL; | |
9791 | bfd_byte *contents, *extdyn, *extdynend; | |
9792 | asection *sec = bfd_get_section_by_name (abfd, ".dynamic"); | |
9793 | if (!sec || !bfd_malloc_and_get_section (abfd, sec, &contents)) | |
9794 | return ret; | |
9795 | extdyn = contents; | |
9796 | extdynend = contents + sec->size; | |
9797 | for (; extdyn < extdynend; extdyn += sizeof (ElfNN_External_Dyn)) | |
9798 | { | |
9799 | Elf_Internal_Dyn dyn; | |
9800 | bfd_elfNN_swap_dyn_in (abfd, extdyn, &dyn); | |
9801 | ||
9802 | /* Let's check the processor specific dynamic array tags. */ | |
9803 | bfd_vma tag = dyn.d_tag; | |
9804 | if (tag < DT_LOPROC || tag > DT_HIPROC) | |
9805 | continue; | |
9806 | ||
9807 | switch (tag) | |
9808 | { | |
9809 | case DT_AARCH64_BTI_PLT: | |
1dbade74 SD |
9810 | ret |= PLT_BTI; |
9811 | break; | |
9812 | ||
9813 | case DT_AARCH64_PAC_PLT: | |
9814 | ret |= PLT_PAC; | |
37c18eed SD |
9815 | break; |
9816 | ||
9817 | default: break; | |
9818 | } | |
9819 | } | |
9820 | free (contents); | |
9821 | return ret; | |
9822 | } | |
9823 | ||
9824 | static long | |
9825 | elfNN_aarch64_get_synthetic_symtab (bfd *abfd, | |
9826 | long symcount, | |
9827 | asymbol **syms, | |
9828 | long dynsymcount, | |
9829 | asymbol **dynsyms, | |
9830 | asymbol **ret) | |
9831 | { | |
9832 | elf_aarch64_tdata (abfd)->plt_type = get_plt_type (abfd); | |
9833 | return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms, | |
9834 | dynsymcount, dynsyms, ret); | |
9835 | } | |
9836 | ||
a06ea964 NC |
9837 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
9838 | or (bfd_vma) -1 if it should not be included. */ | |
9839 | ||
9840 | static bfd_vma | |
cec5225b | 9841 | elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt, |
a06ea964 NC |
9842 | const arelent *rel ATTRIBUTE_UNUSED) |
9843 | { | |
37c18eed SD |
9844 | size_t plt0_size = PLT_ENTRY_SIZE; |
9845 | size_t pltn_size = PLT_SMALL_ENTRY_SIZE; | |
9846 | ||
1dbade74 SD |
9847 | if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_BTI_PAC) |
9848 | { | |
1dbade74 SD |
9849 | if (elf_elfheader (plt->owner)->e_type == ET_EXEC) |
9850 | pltn_size = PLT_BTI_PAC_SMALL_ENTRY_SIZE; | |
9851 | else | |
9852 | pltn_size = PLT_PAC_SMALL_ENTRY_SIZE; | |
9853 | } | |
9854 | else if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_BTI) | |
37c18eed | 9855 | { |
37c18eed SD |
9856 | if (elf_elfheader (plt->owner)->e_type == ET_EXEC) |
9857 | pltn_size = PLT_BTI_SMALL_ENTRY_SIZE; | |
9858 | } | |
1dbade74 SD |
9859 | else if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_PAC) |
9860 | { | |
1dbade74 SD |
9861 | pltn_size = PLT_PAC_SMALL_ENTRY_SIZE; |
9862 | } | |
9863 | ||
37c18eed | 9864 | return plt->vma + plt0_size + i * pltn_size; |
a06ea964 NC |
9865 | } |
9866 | ||
d691934d NC |
9867 | /* Returns TRUE if NAME is an AArch64 mapping symbol. |
9868 | The ARM ELF standard defines $x (for A64 code) and $d (for data). | |
9869 | It also allows a period initiated suffix to be added to the symbol, ie: | |
9870 | "$[adtx]\.[:sym_char]+". */ | |
9871 | ||
9872 | static bfd_boolean | |
9873 | is_aarch64_mapping_symbol (const char * name) | |
9874 | { | |
9875 | return name != NULL /* Paranoia. */ | |
9876 | && name[0] == '$' /* Note: if objcopy --prefix-symbols has been used then | |
9877 | the mapping symbols could have acquired a prefix. | |
9878 | We do not support this here, since such symbols no | |
9879 | longer conform to the ARM ELF ABI. */ | |
9880 | && (name[1] == 'd' || name[1] == 'x') | |
9881 | && (name[2] == 0 || name[2] == '.'); | |
9882 | /* FIXME: Strictly speaking the symbol is only a valid mapping symbol if | |
9883 | any characters that follow the period are legal characters for the body | |
9884 | of a symbol's name. For now we just assume that this is the case. */ | |
9885 | } | |
9886 | ||
9887 | /* Make sure that mapping symbols in object files are not removed via the | |
9888 | "strip --strip-unneeded" tool. These symbols might needed in order to | |
9889 | correctly generate linked files. Once an object file has been linked, | |
9890 | it should be safe to remove them. */ | |
9891 | ||
9892 | static void | |
9893 | elfNN_aarch64_backend_symbol_processing (bfd *abfd, asymbol *sym) | |
9894 | { | |
9895 | if (((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
9896 | && sym->section != bfd_abs_section_ptr | |
9897 | && is_aarch64_mapping_symbol (sym->name)) | |
9898 | sym->flags |= BSF_KEEP; | |
9899 | } | |
9900 | ||
cd702818 SD |
9901 | /* Implement elf_backend_setup_gnu_properties for AArch64. It serves as a |
9902 | wrapper function for _bfd_aarch64_elf_link_setup_gnu_properties to account | |
9903 | for the effect of GNU properties of the output_bfd. */ | |
9904 | static bfd * | |
9905 | elfNN_aarch64_link_setup_gnu_properties (struct bfd_link_info *info) | |
9906 | { | |
9907 | uint32_t prop = elf_aarch64_tdata (info->output_bfd)->gnu_and_prop; | |
9908 | bfd *pbfd = _bfd_aarch64_elf_link_setup_gnu_properties (info, &prop); | |
9909 | elf_aarch64_tdata (info->output_bfd)->gnu_and_prop = prop; | |
37c18eed SD |
9910 | elf_aarch64_tdata (info->output_bfd)->plt_type |
9911 | |= (prop & GNU_PROPERTY_AARCH64_FEATURE_1_BTI) ? PLT_BTI : 0; | |
9912 | setup_plt_values (info, elf_aarch64_tdata (info->output_bfd)->plt_type); | |
cd702818 SD |
9913 | return pbfd; |
9914 | } | |
9915 | ||
9916 | /* Implement elf_backend_merge_gnu_properties for AArch64. It serves as a | |
9917 | wrapper function for _bfd_aarch64_elf_merge_gnu_properties to account | |
9918 | for the effect of GNU properties of the output_bfd. */ | |
9919 | static bfd_boolean | |
9920 | elfNN_aarch64_merge_gnu_properties (struct bfd_link_info *info, | |
4e539114 | 9921 | bfd *abfd, bfd *bbfd, |
cd702818 SD |
9922 | elf_property *aprop, |
9923 | elf_property *bprop) | |
9924 | { | |
9925 | uint32_t prop | |
9926 | = elf_aarch64_tdata (info->output_bfd)->gnu_and_prop; | |
37c18eed SD |
9927 | |
9928 | /* If output has been marked with BTI using command line argument, give out | |
9929 | warning if necessary. */ | |
4e539114 SD |
9930 | /* Properties are merged per type, hence only check for warnings when merging |
9931 | GNU_PROPERTY_AARCH64_FEATURE_1_AND. */ | |
9932 | if (((aprop && aprop->pr_type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) | |
9933 | || (bprop && bprop->pr_type == GNU_PROPERTY_AARCH64_FEATURE_1_AND)) | |
9934 | && (prop & GNU_PROPERTY_AARCH64_FEATURE_1_BTI) | |
37c18eed SD |
9935 | && (!elf_aarch64_tdata (info->output_bfd)->no_bti_warn)) |
9936 | { | |
9937 | if ((aprop && !(aprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI)) | |
4e539114 | 9938 | || !aprop) |
37c18eed | 9939 | { |
4e539114 SD |
9940 | _bfd_error_handler (_("%pB: warning: BTI turned on by --force-bti when " |
9941 | "all inputs do not have BTI in NOTE section."), | |
9942 | abfd); | |
9943 | } | |
9944 | if ((bprop && !(bprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI)) | |
9945 | || !bprop) | |
9946 | { | |
9947 | _bfd_error_handler (_("%pB: warning: BTI turned on by --force-bti when " | |
9948 | "all inputs do not have BTI in NOTE section."), | |
9949 | bbfd); | |
37c18eed SD |
9950 | } |
9951 | } | |
9952 | ||
cd702818 SD |
9953 | return _bfd_aarch64_elf_merge_gnu_properties (info, abfd, aprop, |
9954 | bprop, prop); | |
9955 | } | |
a06ea964 NC |
9956 | |
9957 | /* We use this so we can override certain functions | |
9958 | (though currently we don't). */ | |
9959 | ||
cec5225b | 9960 | const struct elf_size_info elfNN_aarch64_size_info = |
a06ea964 | 9961 | { |
cec5225b YZ |
9962 | sizeof (ElfNN_External_Ehdr), |
9963 | sizeof (ElfNN_External_Phdr), | |
9964 | sizeof (ElfNN_External_Shdr), | |
9965 | sizeof (ElfNN_External_Rel), | |
9966 | sizeof (ElfNN_External_Rela), | |
9967 | sizeof (ElfNN_External_Sym), | |
9968 | sizeof (ElfNN_External_Dyn), | |
a06ea964 NC |
9969 | sizeof (Elf_External_Note), |
9970 | 4, /* Hash table entry size. */ | |
9971 | 1, /* Internal relocs per external relocs. */ | |
cec5225b YZ |
9972 | ARCH_SIZE, /* Arch size. */ |
9973 | LOG_FILE_ALIGN, /* Log_file_align. */ | |
9974 | ELFCLASSNN, EV_CURRENT, | |
9975 | bfd_elfNN_write_out_phdrs, | |
9976 | bfd_elfNN_write_shdrs_and_ehdr, | |
9977 | bfd_elfNN_checksum_contents, | |
9978 | bfd_elfNN_write_relocs, | |
9979 | bfd_elfNN_swap_symbol_in, | |
9980 | bfd_elfNN_swap_symbol_out, | |
9981 | bfd_elfNN_slurp_reloc_table, | |
9982 | bfd_elfNN_slurp_symbol_table, | |
9983 | bfd_elfNN_swap_dyn_in, | |
9984 | bfd_elfNN_swap_dyn_out, | |
9985 | bfd_elfNN_swap_reloc_in, | |
9986 | bfd_elfNN_swap_reloc_out, | |
9987 | bfd_elfNN_swap_reloca_in, | |
9988 | bfd_elfNN_swap_reloca_out | |
a06ea964 NC |
9989 | }; |
9990 | ||
9991 | #define ELF_ARCH bfd_arch_aarch64 | |
9992 | #define ELF_MACHINE_CODE EM_AARCH64 | |
9993 | #define ELF_MAXPAGESIZE 0x10000 | |
9994 | #define ELF_MINPAGESIZE 0x1000 | |
9995 | #define ELF_COMMONPAGESIZE 0x1000 | |
9996 | ||
07d6d2b8 | 9997 | #define bfd_elfNN_close_and_cleanup \ |
cec5225b | 9998 | elfNN_aarch64_close_and_cleanup |
a06ea964 | 9999 | |
07d6d2b8 | 10000 | #define bfd_elfNN_bfd_free_cached_info \ |
cec5225b | 10001 | elfNN_aarch64_bfd_free_cached_info |
a06ea964 | 10002 | |
cec5225b YZ |
10003 | #define bfd_elfNN_bfd_is_target_special_symbol \ |
10004 | elfNN_aarch64_is_target_special_symbol | |
a06ea964 | 10005 | |
07d6d2b8 | 10006 | #define bfd_elfNN_bfd_link_hash_table_create \ |
cec5225b | 10007 | elfNN_aarch64_link_hash_table_create |
a06ea964 | 10008 | |
cec5225b YZ |
10009 | #define bfd_elfNN_bfd_merge_private_bfd_data \ |
10010 | elfNN_aarch64_merge_private_bfd_data | |
a06ea964 | 10011 | |
cec5225b YZ |
10012 | #define bfd_elfNN_bfd_print_private_bfd_data \ |
10013 | elfNN_aarch64_print_private_bfd_data | |
a06ea964 | 10014 | |
cec5225b YZ |
10015 | #define bfd_elfNN_bfd_reloc_type_lookup \ |
10016 | elfNN_aarch64_reloc_type_lookup | |
a06ea964 | 10017 | |
cec5225b YZ |
10018 | #define bfd_elfNN_bfd_reloc_name_lookup \ |
10019 | elfNN_aarch64_reloc_name_lookup | |
a06ea964 | 10020 | |
cec5225b YZ |
10021 | #define bfd_elfNN_bfd_set_private_flags \ |
10022 | elfNN_aarch64_set_private_flags | |
a06ea964 | 10023 | |
cec5225b YZ |
10024 | #define bfd_elfNN_find_inliner_info \ |
10025 | elfNN_aarch64_find_inliner_info | |
a06ea964 | 10026 | |
cec5225b YZ |
10027 | #define bfd_elfNN_find_nearest_line \ |
10028 | elfNN_aarch64_find_nearest_line | |
a06ea964 | 10029 | |
37c18eed SD |
10030 | #define bfd_elfNN_get_synthetic_symtab \ |
10031 | elfNN_aarch64_get_synthetic_symtab | |
10032 | ||
cec5225b YZ |
10033 | #define bfd_elfNN_mkobject \ |
10034 | elfNN_aarch64_mkobject | |
a06ea964 | 10035 | |
cec5225b YZ |
10036 | #define bfd_elfNN_new_section_hook \ |
10037 | elfNN_aarch64_new_section_hook | |
a06ea964 NC |
10038 | |
10039 | #define elf_backend_adjust_dynamic_symbol \ | |
cec5225b | 10040 | elfNN_aarch64_adjust_dynamic_symbol |
a06ea964 NC |
10041 | |
10042 | #define elf_backend_always_size_sections \ | |
cec5225b | 10043 | elfNN_aarch64_always_size_sections |
a06ea964 NC |
10044 | |
10045 | #define elf_backend_check_relocs \ | |
cec5225b | 10046 | elfNN_aarch64_check_relocs |
a06ea964 NC |
10047 | |
10048 | #define elf_backend_copy_indirect_symbol \ | |
cec5225b | 10049 | elfNN_aarch64_copy_indirect_symbol |
a06ea964 NC |
10050 | |
10051 | /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts | |
10052 | to them in our hash. */ | |
10053 | #define elf_backend_create_dynamic_sections \ | |
cec5225b | 10054 | elfNN_aarch64_create_dynamic_sections |
a06ea964 NC |
10055 | |
10056 | #define elf_backend_init_index_section \ | |
10057 | _bfd_elf_init_2_index_sections | |
10058 | ||
a06ea964 | 10059 | #define elf_backend_finish_dynamic_sections \ |
cec5225b | 10060 | elfNN_aarch64_finish_dynamic_sections |
a06ea964 NC |
10061 | |
10062 | #define elf_backend_finish_dynamic_symbol \ | |
cec5225b | 10063 | elfNN_aarch64_finish_dynamic_symbol |
a06ea964 | 10064 | |
a06ea964 | 10065 | #define elf_backend_object_p \ |
cec5225b | 10066 | elfNN_aarch64_object_p |
a06ea964 | 10067 | |
07d6d2b8 | 10068 | #define elf_backend_output_arch_local_syms \ |
cec5225b | 10069 | elfNN_aarch64_output_arch_local_syms |
a06ea964 NC |
10070 | |
10071 | #define elf_backend_plt_sym_val \ | |
cec5225b | 10072 | elfNN_aarch64_plt_sym_val |
a06ea964 NC |
10073 | |
10074 | #define elf_backend_post_process_headers \ | |
cec5225b | 10075 | elfNN_aarch64_post_process_headers |
a06ea964 NC |
10076 | |
10077 | #define elf_backend_relocate_section \ | |
cec5225b | 10078 | elfNN_aarch64_relocate_section |
a06ea964 NC |
10079 | |
10080 | #define elf_backend_reloc_type_class \ | |
cec5225b | 10081 | elfNN_aarch64_reloc_type_class |
a06ea964 | 10082 | |
a06ea964 | 10083 | #define elf_backend_section_from_shdr \ |
cec5225b | 10084 | elfNN_aarch64_section_from_shdr |
a06ea964 NC |
10085 | |
10086 | #define elf_backend_size_dynamic_sections \ | |
cec5225b | 10087 | elfNN_aarch64_size_dynamic_sections |
a06ea964 NC |
10088 | |
10089 | #define elf_backend_size_info \ | |
cec5225b | 10090 | elfNN_aarch64_size_info |
a06ea964 | 10091 | |
68fcca92 JW |
10092 | #define elf_backend_write_section \ |
10093 | elfNN_aarch64_write_section | |
10094 | ||
d691934d NC |
10095 | #define elf_backend_symbol_processing \ |
10096 | elfNN_aarch64_backend_symbol_processing | |
10097 | ||
cd702818 SD |
10098 | #define elf_backend_setup_gnu_properties \ |
10099 | elfNN_aarch64_link_setup_gnu_properties | |
10100 | ||
10101 | #define elf_backend_merge_gnu_properties \ | |
10102 | elfNN_aarch64_merge_gnu_properties | |
10103 | ||
a06ea964 | 10104 | #define elf_backend_can_refcount 1 |
59c108f7 | 10105 | #define elf_backend_can_gc_sections 1 |
a06ea964 NC |
10106 | #define elf_backend_plt_readonly 1 |
10107 | #define elf_backend_want_got_plt 1 | |
10108 | #define elf_backend_want_plt_sym 0 | |
5474d94f | 10109 | #define elf_backend_want_dynrelro 1 |
a06ea964 NC |
10110 | #define elf_backend_may_use_rel_p 0 |
10111 | #define elf_backend_may_use_rela_p 1 | |
10112 | #define elf_backend_default_use_rela_p 1 | |
07d6d2b8 | 10113 | #define elf_backend_rela_normal 1 |
64f52338 | 10114 | #define elf_backend_dtrel_excludes_plt 1 |
a06ea964 | 10115 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3) |
c495064d | 10116 | #define elf_backend_default_execstack 0 |
32f573bc | 10117 | #define elf_backend_extern_protected_data 1 |
7f784814 | 10118 | #define elf_backend_hash_symbol elf_aarch64_hash_symbol |
a06ea964 | 10119 | |
07d6d2b8 | 10120 | #undef elf_backend_obj_attrs_section |
a06ea964 NC |
10121 | #define elf_backend_obj_attrs_section ".ARM.attributes" |
10122 | ||
cec5225b | 10123 | #include "elfNN-target.h" |
a75cf613 ES |
10124 | |
10125 | /* CloudABI support. */ | |
10126 | ||
10127 | #undef TARGET_LITTLE_SYM | |
10128 | #define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec | |
10129 | #undef TARGET_LITTLE_NAME | |
10130 | #define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi" | |
10131 | #undef TARGET_BIG_SYM | |
10132 | #define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec | |
10133 | #undef TARGET_BIG_NAME | |
10134 | #define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi" | |
10135 | ||
10136 | #undef ELF_OSABI | |
10137 | #define ELF_OSABI ELFOSABI_CLOUDABI | |
10138 | ||
10139 | #undef elfNN_bed | |
10140 | #define elfNN_bed elfNN_aarch64_cloudabi_bed | |
10141 | ||
10142 | #include "elfNN-target.h" |