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cec5225b | 1 | /* AArch64-specific support for NN-bit ELF. |
b90efa5b | 2 | Copyright (C) 2009-2015 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 | |
34 | R_AARCH64_TLSGD_ADR_PAGE21(foo) | |
35 | add x0, :tlsgd_lo12:foo | |
36 | R_AARCH64_TLSGD_ADD_LO12_NC(foo) | |
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 | ||
418009c2 | 43 | adrp x0, :tlsdesc:foo R_AARCH64_TLSDESC_ADR_PAGE21(foo) |
a06ea964 NC |
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) | |
46 | .tlsdesccall foo | |
47 | blr x1 R_AARCH64_TLSDESC_CALL(foo) | |
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" | |
142 | #include "bfd_stdint.h" | |
143 | #include "elf-bfd.h" | |
144 | #include "bfdlink.h" | |
1419bbe5 | 145 | #include "objalloc.h" |
a06ea964 | 146 | #include "elf/aarch64.h" |
caed7120 | 147 | #include "elfxx-aarch64.h" |
a06ea964 | 148 | |
cec5225b YZ |
149 | #define ARCH_SIZE NN |
150 | ||
151 | #if ARCH_SIZE == 64 | |
152 | #define AARCH64_R(NAME) R_AARCH64_ ## NAME | |
153 | #define AARCH64_R_STR(NAME) "R_AARCH64_" #NAME | |
a6bb11b2 YZ |
154 | #define HOWTO64(...) HOWTO (__VA_ARGS__) |
155 | #define HOWTO32(...) EMPTY_HOWTO (0) | |
cec5225b YZ |
156 | #define LOG_FILE_ALIGN 3 |
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 YZ |
164 | #define LOG_FILE_ALIGN 2 |
165 | #endif | |
166 | ||
a6bb11b2 | 167 | #define IS_AARCH64_TLS_RELOC(R_TYPE) \ |
4c0a9a6f JW |
168 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \ |
169 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \ | |
3c12b054 | 170 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \ |
a6bb11b2 | 171 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \ |
a6bb11b2 | 172 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC \ |
4c0a9a6f | 173 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC \ |
a6bb11b2 | 174 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \ |
4c0a9a6f JW |
175 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC \ |
176 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1 \ | |
6ffe9a1b | 177 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12 \ |
40fbed84 | 178 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12 \ |
753999c1 | 179 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC \ |
73f925cc | 180 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \ |
f69e4920 | 181 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \ |
77a69ff8 | 182 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 \ |
6ffe9a1b JW |
183 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0 \ |
184 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC \ | |
185 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1 \ | |
186 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC \ | |
187 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2 \ | |
a6bb11b2 | 188 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 \ |
4c0a9a6f | 189 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12 \ |
a6bb11b2 | 190 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC \ |
a6bb11b2 YZ |
191 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0 \ |
192 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC \ | |
4c0a9a6f JW |
193 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 \ |
194 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC \ | |
195 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 \ | |
a6bb11b2 YZ |
196 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPMOD \ |
197 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPREL \ | |
198 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_TPREL \ | |
a06ea964 NC |
199 | || IS_AARCH64_TLSDESC_RELOC ((R_TYPE))) |
200 | ||
9331eea1 JW |
201 | #define IS_AARCH64_TLS_RELAX_RELOC(R_TYPE) \ |
202 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \ | |
203 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \ | |
204 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \ | |
205 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \ | |
206 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \ | |
207 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC \ | |
208 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \ | |
209 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \ | |
210 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \ | |
211 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC \ | |
212 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \ | |
213 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC) | |
214 | ||
a6bb11b2 | 215 | #define IS_AARCH64_TLSDESC_RELOC(R_TYPE) \ |
4c0a9a6f JW |
216 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC \ |
217 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \ | |
218 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC \ | |
a6bb11b2 | 219 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \ |
389b8029 | 220 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \ |
4c0a9a6f | 221 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \ |
a6bb11b2 | 222 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC \ |
4c0a9a6f | 223 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC \ |
a6bb11b2 | 224 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \ |
4c0a9a6f JW |
225 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \ |
226 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \ | |
227 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1) | |
a06ea964 NC |
228 | |
229 | #define ELIMINATE_COPY_RELOCS 0 | |
230 | ||
a06ea964 | 231 | /* Return size of a relocation entry. HTAB is the bfd's |
cec5225b YZ |
232 | elf_aarch64_link_hash_entry. */ |
233 | #define RELOC_SIZE(HTAB) (sizeof (ElfNN_External_Rela)) | |
a06ea964 | 234 | |
cec5225b YZ |
235 | /* GOT Entry size - 8 bytes in ELF64 and 4 bytes in ELF32. */ |
236 | #define GOT_ENTRY_SIZE (ARCH_SIZE / 8) | |
a06ea964 NC |
237 | #define PLT_ENTRY_SIZE (32) |
238 | #define PLT_SMALL_ENTRY_SIZE (16) | |
239 | #define PLT_TLSDESC_ENTRY_SIZE (32) | |
240 | ||
a06ea964 NC |
241 | /* Encoding of the nop instruction */ |
242 | #define INSN_NOP 0xd503201f | |
243 | ||
244 | #define aarch64_compute_jump_table_size(htab) \ | |
245 | (((htab)->root.srelplt == NULL) ? 0 \ | |
246 | : (htab)->root.srelplt->reloc_count * GOT_ENTRY_SIZE) | |
247 | ||
248 | /* The first entry in a procedure linkage table looks like this | |
249 | if the distance between the PLTGOT and the PLT is < 4GB use | |
250 | these PLT entries. Note that the dynamic linker gets &PLTGOT[2] | |
251 | in x16 and needs to work out PLTGOT[1] by using an address of | |
cec5225b YZ |
252 | [x16,#-GOT_ENTRY_SIZE]. */ |
253 | static const bfd_byte elfNN_aarch64_small_plt0_entry[PLT_ENTRY_SIZE] = | |
a06ea964 NC |
254 | { |
255 | 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */ | |
256 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */ | |
caed7120 | 257 | #if ARCH_SIZE == 64 |
a06ea964 NC |
258 | 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */ |
259 | 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */ | |
caed7120 YZ |
260 | #else |
261 | 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */ | |
262 | 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */ | |
263 | #endif | |
a06ea964 NC |
264 | 0x20, 0x02, 0x1f, 0xd6, /* br x17 */ |
265 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
266 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
267 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
268 | }; | |
269 | ||
270 | /* Per function entry in a procedure linkage table looks like this | |
271 | if the distance between the PLTGOT and the PLT is < 4GB use | |
272 | these PLT entries. */ | |
cec5225b | 273 | static const bfd_byte elfNN_aarch64_small_plt_entry[PLT_SMALL_ENTRY_SIZE] = |
a06ea964 NC |
274 | { |
275 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
caed7120 | 276 | #if ARCH_SIZE == 64 |
a06ea964 NC |
277 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ |
278 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
caed7120 YZ |
279 | #else |
280 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
281 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
282 | #endif | |
a06ea964 NC |
283 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ |
284 | }; | |
285 | ||
286 | static const bfd_byte | |
cec5225b | 287 | elfNN_aarch64_tlsdesc_small_plt_entry[PLT_TLSDESC_ENTRY_SIZE] = |
a06ea964 NC |
288 | { |
289 | 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */ | |
290 | 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */ | |
291 | 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */ | |
caed7120 YZ |
292 | #if ARCH_SIZE == 64 |
293 | 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */ | |
a06ea964 | 294 | 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */ |
caed7120 YZ |
295 | #else |
296 | 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */ | |
297 | 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */ | |
298 | #endif | |
299 | 0x40, 0x00, 0x1f, 0xd6, /* br x2 */ | |
a06ea964 NC |
300 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ |
301 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
302 | }; | |
303 | ||
cec5225b YZ |
304 | #define elf_info_to_howto elfNN_aarch64_info_to_howto |
305 | #define elf_info_to_howto_rel elfNN_aarch64_info_to_howto | |
a06ea964 NC |
306 | |
307 | #define AARCH64_ELF_ABI_VERSION 0 | |
a06ea964 NC |
308 | |
309 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ | |
310 | #define ALL_ONES (~ (bfd_vma) 0) | |
311 | ||
a6bb11b2 YZ |
312 | /* Indexed by the bfd interal reloc enumerators. |
313 | Therefore, the table needs to be synced with BFD_RELOC_AARCH64_* | |
314 | in reloc.c. */ | |
a06ea964 | 315 | |
a6bb11b2 | 316 | static reloc_howto_type elfNN_aarch64_howto_table[] = |
a06ea964 | 317 | { |
a6bb11b2 | 318 | EMPTY_HOWTO (0), |
a06ea964 | 319 | |
a6bb11b2 | 320 | /* Basic data relocations. */ |
a06ea964 | 321 | |
a6bb11b2 YZ |
322 | #if ARCH_SIZE == 64 |
323 | HOWTO (R_AARCH64_NULL, /* type */ | |
a06ea964 | 324 | 0, /* rightshift */ |
6346d5ca | 325 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a6bb11b2 | 326 | 0, /* bitsize */ |
a06ea964 NC |
327 | FALSE, /* pc_relative */ |
328 | 0, /* bitpos */ | |
329 | complain_overflow_dont, /* complain_on_overflow */ | |
330 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 331 | "R_AARCH64_NULL", /* name */ |
a06ea964 NC |
332 | FALSE, /* partial_inplace */ |
333 | 0, /* src_mask */ | |
a6bb11b2 | 334 | 0, /* dst_mask */ |
a06ea964 | 335 | FALSE), /* pcrel_offset */ |
a6bb11b2 YZ |
336 | #else |
337 | HOWTO (R_AARCH64_NONE, /* type */ | |
a06ea964 | 338 | 0, /* rightshift */ |
6346d5ca | 339 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a06ea964 NC |
340 | 0, /* bitsize */ |
341 | FALSE, /* pc_relative */ | |
342 | 0, /* bitpos */ | |
343 | complain_overflow_dont, /* complain_on_overflow */ | |
344 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 345 | "R_AARCH64_NONE", /* name */ |
a06ea964 NC |
346 | FALSE, /* partial_inplace */ |
347 | 0, /* src_mask */ | |
348 | 0, /* dst_mask */ | |
349 | FALSE), /* pcrel_offset */ | |
a6bb11b2 | 350 | #endif |
a06ea964 NC |
351 | |
352 | /* .xword: (S+A) */ | |
a6bb11b2 | 353 | HOWTO64 (AARCH64_R (ABS64), /* type */ |
a06ea964 NC |
354 | 0, /* rightshift */ |
355 | 4, /* size (4 = long long) */ | |
356 | 64, /* bitsize */ | |
357 | FALSE, /* pc_relative */ | |
358 | 0, /* bitpos */ | |
359 | complain_overflow_unsigned, /* complain_on_overflow */ | |
360 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 361 | AARCH64_R_STR (ABS64), /* name */ |
a06ea964 NC |
362 | FALSE, /* partial_inplace */ |
363 | ALL_ONES, /* src_mask */ | |
364 | ALL_ONES, /* dst_mask */ | |
365 | FALSE), /* pcrel_offset */ | |
366 | ||
367 | /* .word: (S+A) */ | |
a6bb11b2 | 368 | HOWTO (AARCH64_R (ABS32), /* type */ |
a06ea964 NC |
369 | 0, /* rightshift */ |
370 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
371 | 32, /* bitsize */ | |
372 | FALSE, /* pc_relative */ | |
373 | 0, /* bitpos */ | |
374 | complain_overflow_unsigned, /* complain_on_overflow */ | |
375 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 376 | AARCH64_R_STR (ABS32), /* name */ |
a06ea964 NC |
377 | FALSE, /* partial_inplace */ |
378 | 0xffffffff, /* src_mask */ | |
379 | 0xffffffff, /* dst_mask */ | |
380 | FALSE), /* pcrel_offset */ | |
381 | ||
382 | /* .half: (S+A) */ | |
a6bb11b2 | 383 | HOWTO (AARCH64_R (ABS16), /* type */ |
a06ea964 NC |
384 | 0, /* rightshift */ |
385 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
386 | 16, /* bitsize */ | |
387 | FALSE, /* pc_relative */ | |
388 | 0, /* bitpos */ | |
389 | complain_overflow_unsigned, /* complain_on_overflow */ | |
390 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 391 | AARCH64_R_STR (ABS16), /* name */ |
a06ea964 NC |
392 | FALSE, /* partial_inplace */ |
393 | 0xffff, /* src_mask */ | |
394 | 0xffff, /* dst_mask */ | |
395 | FALSE), /* pcrel_offset */ | |
396 | ||
397 | /* .xword: (S+A-P) */ | |
a6bb11b2 | 398 | HOWTO64 (AARCH64_R (PREL64), /* type */ |
a06ea964 NC |
399 | 0, /* rightshift */ |
400 | 4, /* size (4 = long long) */ | |
401 | 64, /* bitsize */ | |
402 | TRUE, /* pc_relative */ | |
403 | 0, /* bitpos */ | |
404 | complain_overflow_signed, /* complain_on_overflow */ | |
405 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 406 | AARCH64_R_STR (PREL64), /* name */ |
a06ea964 NC |
407 | FALSE, /* partial_inplace */ |
408 | ALL_ONES, /* src_mask */ | |
409 | ALL_ONES, /* dst_mask */ | |
410 | TRUE), /* pcrel_offset */ | |
411 | ||
412 | /* .word: (S+A-P) */ | |
a6bb11b2 | 413 | HOWTO (AARCH64_R (PREL32), /* type */ |
a06ea964 NC |
414 | 0, /* rightshift */ |
415 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
416 | 32, /* bitsize */ | |
417 | TRUE, /* pc_relative */ | |
418 | 0, /* bitpos */ | |
419 | complain_overflow_signed, /* complain_on_overflow */ | |
420 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 421 | AARCH64_R_STR (PREL32), /* name */ |
a06ea964 NC |
422 | FALSE, /* partial_inplace */ |
423 | 0xffffffff, /* src_mask */ | |
424 | 0xffffffff, /* dst_mask */ | |
425 | TRUE), /* pcrel_offset */ | |
426 | ||
427 | /* .half: (S+A-P) */ | |
a6bb11b2 | 428 | HOWTO (AARCH64_R (PREL16), /* type */ |
a06ea964 NC |
429 | 0, /* rightshift */ |
430 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
431 | 16, /* bitsize */ | |
432 | TRUE, /* pc_relative */ | |
433 | 0, /* bitpos */ | |
434 | complain_overflow_signed, /* complain_on_overflow */ | |
435 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 436 | AARCH64_R_STR (PREL16), /* name */ |
a06ea964 NC |
437 | FALSE, /* partial_inplace */ |
438 | 0xffff, /* src_mask */ | |
439 | 0xffff, /* dst_mask */ | |
440 | TRUE), /* pcrel_offset */ | |
441 | ||
442 | /* Group relocations to create a 16, 32, 48 or 64 bit | |
443 | unsigned data or abs address inline. */ | |
444 | ||
445 | /* MOVZ: ((S+A) >> 0) & 0xffff */ | |
a6bb11b2 | 446 | HOWTO (AARCH64_R (MOVW_UABS_G0), /* type */ |
a06ea964 NC |
447 | 0, /* rightshift */ |
448 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
449 | 16, /* bitsize */ | |
450 | FALSE, /* pc_relative */ | |
451 | 0, /* bitpos */ | |
452 | complain_overflow_unsigned, /* complain_on_overflow */ | |
453 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 454 | AARCH64_R_STR (MOVW_UABS_G0), /* name */ |
a06ea964 NC |
455 | FALSE, /* partial_inplace */ |
456 | 0xffff, /* src_mask */ | |
457 | 0xffff, /* dst_mask */ | |
458 | FALSE), /* pcrel_offset */ | |
459 | ||
460 | /* MOVK: ((S+A) >> 0) & 0xffff [no overflow check] */ | |
a6bb11b2 | 461 | HOWTO (AARCH64_R (MOVW_UABS_G0_NC), /* type */ |
a06ea964 NC |
462 | 0, /* rightshift */ |
463 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
464 | 16, /* bitsize */ | |
465 | FALSE, /* pc_relative */ | |
466 | 0, /* bitpos */ | |
467 | complain_overflow_dont, /* complain_on_overflow */ | |
468 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 469 | AARCH64_R_STR (MOVW_UABS_G0_NC), /* name */ |
a06ea964 NC |
470 | FALSE, /* partial_inplace */ |
471 | 0xffff, /* src_mask */ | |
472 | 0xffff, /* dst_mask */ | |
473 | FALSE), /* pcrel_offset */ | |
474 | ||
475 | /* MOVZ: ((S+A) >> 16) & 0xffff */ | |
a6bb11b2 | 476 | HOWTO (AARCH64_R (MOVW_UABS_G1), /* type */ |
a06ea964 NC |
477 | 16, /* rightshift */ |
478 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
479 | 16, /* bitsize */ | |
480 | FALSE, /* pc_relative */ | |
481 | 0, /* bitpos */ | |
482 | complain_overflow_unsigned, /* complain_on_overflow */ | |
483 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 484 | AARCH64_R_STR (MOVW_UABS_G1), /* name */ |
a06ea964 NC |
485 | FALSE, /* partial_inplace */ |
486 | 0xffff, /* src_mask */ | |
487 | 0xffff, /* dst_mask */ | |
488 | FALSE), /* pcrel_offset */ | |
489 | ||
490 | /* MOVK: ((S+A) >> 16) & 0xffff [no overflow check] */ | |
a6bb11b2 | 491 | HOWTO64 (AARCH64_R (MOVW_UABS_G1_NC), /* type */ |
a06ea964 NC |
492 | 16, /* rightshift */ |
493 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
494 | 16, /* bitsize */ | |
495 | FALSE, /* pc_relative */ | |
496 | 0, /* bitpos */ | |
497 | complain_overflow_dont, /* complain_on_overflow */ | |
498 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 499 | AARCH64_R_STR (MOVW_UABS_G1_NC), /* name */ |
a06ea964 NC |
500 | FALSE, /* partial_inplace */ |
501 | 0xffff, /* src_mask */ | |
502 | 0xffff, /* dst_mask */ | |
503 | FALSE), /* pcrel_offset */ | |
504 | ||
505 | /* MOVZ: ((S+A) >> 32) & 0xffff */ | |
a6bb11b2 | 506 | HOWTO64 (AARCH64_R (MOVW_UABS_G2), /* type */ |
a06ea964 NC |
507 | 32, /* rightshift */ |
508 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
509 | 16, /* bitsize */ | |
510 | FALSE, /* pc_relative */ | |
511 | 0, /* bitpos */ | |
512 | complain_overflow_unsigned, /* complain_on_overflow */ | |
513 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 514 | AARCH64_R_STR (MOVW_UABS_G2), /* name */ |
a06ea964 NC |
515 | FALSE, /* partial_inplace */ |
516 | 0xffff, /* src_mask */ | |
517 | 0xffff, /* dst_mask */ | |
518 | FALSE), /* pcrel_offset */ | |
519 | ||
520 | /* MOVK: ((S+A) >> 32) & 0xffff [no overflow check] */ | |
a6bb11b2 | 521 | HOWTO64 (AARCH64_R (MOVW_UABS_G2_NC), /* type */ |
a06ea964 NC |
522 | 32, /* rightshift */ |
523 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
524 | 16, /* bitsize */ | |
525 | FALSE, /* pc_relative */ | |
526 | 0, /* bitpos */ | |
527 | complain_overflow_dont, /* complain_on_overflow */ | |
528 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 529 | AARCH64_R_STR (MOVW_UABS_G2_NC), /* name */ |
a06ea964 NC |
530 | FALSE, /* partial_inplace */ |
531 | 0xffff, /* src_mask */ | |
532 | 0xffff, /* dst_mask */ | |
533 | FALSE), /* pcrel_offset */ | |
534 | ||
535 | /* MOVZ: ((S+A) >> 48) & 0xffff */ | |
a6bb11b2 | 536 | HOWTO64 (AARCH64_R (MOVW_UABS_G3), /* type */ |
a06ea964 NC |
537 | 48, /* rightshift */ |
538 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
539 | 16, /* bitsize */ | |
540 | FALSE, /* pc_relative */ | |
541 | 0, /* bitpos */ | |
542 | complain_overflow_unsigned, /* complain_on_overflow */ | |
543 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 544 | AARCH64_R_STR (MOVW_UABS_G3), /* name */ |
a06ea964 NC |
545 | FALSE, /* partial_inplace */ |
546 | 0xffff, /* src_mask */ | |
547 | 0xffff, /* dst_mask */ | |
548 | FALSE), /* pcrel_offset */ | |
549 | ||
550 | /* Group relocations to create high part of a 16, 32, 48 or 64 bit | |
551 | signed data or abs address inline. Will change instruction | |
552 | to MOVN or MOVZ depending on sign of calculated value. */ | |
553 | ||
554 | /* MOV[ZN]: ((S+A) >> 0) & 0xffff */ | |
a6bb11b2 | 555 | HOWTO (AARCH64_R (MOVW_SABS_G0), /* type */ |
a06ea964 NC |
556 | 0, /* rightshift */ |
557 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
558 | 16, /* bitsize */ | |
559 | FALSE, /* pc_relative */ | |
560 | 0, /* bitpos */ | |
561 | complain_overflow_signed, /* complain_on_overflow */ | |
562 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 563 | AARCH64_R_STR (MOVW_SABS_G0), /* name */ |
a06ea964 NC |
564 | FALSE, /* partial_inplace */ |
565 | 0xffff, /* src_mask */ | |
566 | 0xffff, /* dst_mask */ | |
567 | FALSE), /* pcrel_offset */ | |
568 | ||
569 | /* MOV[ZN]: ((S+A) >> 16) & 0xffff */ | |
a6bb11b2 | 570 | HOWTO64 (AARCH64_R (MOVW_SABS_G1), /* type */ |
a06ea964 NC |
571 | 16, /* rightshift */ |
572 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
573 | 16, /* bitsize */ | |
574 | FALSE, /* pc_relative */ | |
575 | 0, /* bitpos */ | |
576 | complain_overflow_signed, /* complain_on_overflow */ | |
577 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 578 | AARCH64_R_STR (MOVW_SABS_G1), /* name */ |
a06ea964 NC |
579 | FALSE, /* partial_inplace */ |
580 | 0xffff, /* src_mask */ | |
581 | 0xffff, /* dst_mask */ | |
582 | FALSE), /* pcrel_offset */ | |
583 | ||
584 | /* MOV[ZN]: ((S+A) >> 32) & 0xffff */ | |
a6bb11b2 | 585 | HOWTO64 (AARCH64_R (MOVW_SABS_G2), /* type */ |
a06ea964 NC |
586 | 32, /* rightshift */ |
587 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
588 | 16, /* bitsize */ | |
589 | FALSE, /* pc_relative */ | |
590 | 0, /* bitpos */ | |
591 | complain_overflow_signed, /* complain_on_overflow */ | |
592 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 593 | AARCH64_R_STR (MOVW_SABS_G2), /* name */ |
a06ea964 NC |
594 | FALSE, /* partial_inplace */ |
595 | 0xffff, /* src_mask */ | |
596 | 0xffff, /* dst_mask */ | |
597 | FALSE), /* pcrel_offset */ | |
598 | ||
599 | /* Relocations to generate 19, 21 and 33 bit PC-relative load/store | |
600 | addresses: PG(x) is (x & ~0xfff). */ | |
601 | ||
602 | /* LD-lit: ((S+A-P) >> 2) & 0x7ffff */ | |
a6bb11b2 | 603 | HOWTO (AARCH64_R (LD_PREL_LO19), /* type */ |
a06ea964 NC |
604 | 2, /* rightshift */ |
605 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
606 | 19, /* bitsize */ | |
607 | TRUE, /* pc_relative */ | |
608 | 0, /* bitpos */ | |
609 | complain_overflow_signed, /* complain_on_overflow */ | |
610 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 611 | AARCH64_R_STR (LD_PREL_LO19), /* name */ |
a06ea964 NC |
612 | FALSE, /* partial_inplace */ |
613 | 0x7ffff, /* src_mask */ | |
614 | 0x7ffff, /* dst_mask */ | |
615 | TRUE), /* pcrel_offset */ | |
616 | ||
617 | /* ADR: (S+A-P) & 0x1fffff */ | |
a6bb11b2 | 618 | HOWTO (AARCH64_R (ADR_PREL_LO21), /* type */ |
a06ea964 NC |
619 | 0, /* rightshift */ |
620 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
621 | 21, /* bitsize */ | |
622 | TRUE, /* pc_relative */ | |
623 | 0, /* bitpos */ | |
624 | complain_overflow_signed, /* complain_on_overflow */ | |
625 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 626 | AARCH64_R_STR (ADR_PREL_LO21), /* name */ |
a06ea964 NC |
627 | FALSE, /* partial_inplace */ |
628 | 0x1fffff, /* src_mask */ | |
629 | 0x1fffff, /* dst_mask */ | |
630 | TRUE), /* pcrel_offset */ | |
631 | ||
632 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
a6bb11b2 | 633 | HOWTO (AARCH64_R (ADR_PREL_PG_HI21), /* type */ |
a06ea964 NC |
634 | 12, /* rightshift */ |
635 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
636 | 21, /* bitsize */ | |
637 | TRUE, /* pc_relative */ | |
638 | 0, /* bitpos */ | |
639 | complain_overflow_signed, /* complain_on_overflow */ | |
640 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 641 | AARCH64_R_STR (ADR_PREL_PG_HI21), /* name */ |
a06ea964 NC |
642 | FALSE, /* partial_inplace */ |
643 | 0x1fffff, /* src_mask */ | |
644 | 0x1fffff, /* dst_mask */ | |
645 | TRUE), /* pcrel_offset */ | |
646 | ||
647 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff [no overflow check] */ | |
a6bb11b2 | 648 | HOWTO64 (AARCH64_R (ADR_PREL_PG_HI21_NC), /* type */ |
a06ea964 NC |
649 | 12, /* rightshift */ |
650 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
651 | 21, /* bitsize */ | |
652 | TRUE, /* pc_relative */ | |
653 | 0, /* bitpos */ | |
654 | complain_overflow_dont, /* complain_on_overflow */ | |
655 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 656 | AARCH64_R_STR (ADR_PREL_PG_HI21_NC), /* name */ |
a06ea964 NC |
657 | FALSE, /* partial_inplace */ |
658 | 0x1fffff, /* src_mask */ | |
659 | 0x1fffff, /* dst_mask */ | |
660 | TRUE), /* pcrel_offset */ | |
661 | ||
662 | /* ADD: (S+A) & 0xfff [no overflow check] */ | |
a6bb11b2 | 663 | HOWTO (AARCH64_R (ADD_ABS_LO12_NC), /* type */ |
a06ea964 NC |
664 | 0, /* rightshift */ |
665 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
666 | 12, /* bitsize */ | |
667 | FALSE, /* pc_relative */ | |
668 | 10, /* bitpos */ | |
669 | complain_overflow_dont, /* complain_on_overflow */ | |
670 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 671 | AARCH64_R_STR (ADD_ABS_LO12_NC), /* name */ |
a06ea964 NC |
672 | FALSE, /* partial_inplace */ |
673 | 0x3ffc00, /* src_mask */ | |
674 | 0x3ffc00, /* dst_mask */ | |
675 | FALSE), /* pcrel_offset */ | |
676 | ||
677 | /* LD/ST8: (S+A) & 0xfff */ | |
a6bb11b2 | 678 | HOWTO (AARCH64_R (LDST8_ABS_LO12_NC), /* type */ |
a06ea964 NC |
679 | 0, /* rightshift */ |
680 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
681 | 12, /* bitsize */ | |
682 | FALSE, /* pc_relative */ | |
683 | 0, /* bitpos */ | |
684 | complain_overflow_dont, /* complain_on_overflow */ | |
685 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 686 | AARCH64_R_STR (LDST8_ABS_LO12_NC), /* name */ |
a06ea964 NC |
687 | FALSE, /* partial_inplace */ |
688 | 0xfff, /* src_mask */ | |
689 | 0xfff, /* dst_mask */ | |
690 | FALSE), /* pcrel_offset */ | |
691 | ||
692 | /* Relocations for control-flow instructions. */ | |
693 | ||
694 | /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */ | |
a6bb11b2 | 695 | HOWTO (AARCH64_R (TSTBR14), /* type */ |
a06ea964 NC |
696 | 2, /* rightshift */ |
697 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
698 | 14, /* bitsize */ | |
699 | TRUE, /* pc_relative */ | |
700 | 0, /* bitpos */ | |
701 | complain_overflow_signed, /* complain_on_overflow */ | |
702 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 703 | AARCH64_R_STR (TSTBR14), /* name */ |
a06ea964 NC |
704 | FALSE, /* partial_inplace */ |
705 | 0x3fff, /* src_mask */ | |
706 | 0x3fff, /* dst_mask */ | |
707 | TRUE), /* pcrel_offset */ | |
708 | ||
709 | /* B.cond: ((S+A-P) >> 2) & 0x7ffff */ | |
a6bb11b2 | 710 | HOWTO (AARCH64_R (CONDBR19), /* type */ |
a06ea964 NC |
711 | 2, /* rightshift */ |
712 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
713 | 19, /* bitsize */ | |
714 | TRUE, /* pc_relative */ | |
715 | 0, /* bitpos */ | |
716 | complain_overflow_signed, /* complain_on_overflow */ | |
717 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 718 | AARCH64_R_STR (CONDBR19), /* name */ |
a06ea964 NC |
719 | FALSE, /* partial_inplace */ |
720 | 0x7ffff, /* src_mask */ | |
721 | 0x7ffff, /* dst_mask */ | |
722 | TRUE), /* pcrel_offset */ | |
723 | ||
a06ea964 | 724 | /* B: ((S+A-P) >> 2) & 0x3ffffff */ |
a6bb11b2 | 725 | HOWTO (AARCH64_R (JUMP26), /* type */ |
a06ea964 NC |
726 | 2, /* rightshift */ |
727 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
728 | 26, /* bitsize */ | |
729 | TRUE, /* pc_relative */ | |
730 | 0, /* bitpos */ | |
731 | complain_overflow_signed, /* complain_on_overflow */ | |
732 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 733 | AARCH64_R_STR (JUMP26), /* name */ |
a06ea964 NC |
734 | FALSE, /* partial_inplace */ |
735 | 0x3ffffff, /* src_mask */ | |
736 | 0x3ffffff, /* dst_mask */ | |
737 | TRUE), /* pcrel_offset */ | |
738 | ||
739 | /* BL: ((S+A-P) >> 2) & 0x3ffffff */ | |
a6bb11b2 | 740 | HOWTO (AARCH64_R (CALL26), /* type */ |
a06ea964 NC |
741 | 2, /* rightshift */ |
742 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
743 | 26, /* bitsize */ | |
744 | TRUE, /* pc_relative */ | |
745 | 0, /* bitpos */ | |
746 | complain_overflow_signed, /* complain_on_overflow */ | |
747 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 748 | AARCH64_R_STR (CALL26), /* name */ |
a06ea964 NC |
749 | FALSE, /* partial_inplace */ |
750 | 0x3ffffff, /* src_mask */ | |
751 | 0x3ffffff, /* dst_mask */ | |
752 | TRUE), /* pcrel_offset */ | |
753 | ||
754 | /* LD/ST16: (S+A) & 0xffe */ | |
a6bb11b2 | 755 | HOWTO (AARCH64_R (LDST16_ABS_LO12_NC), /* type */ |
a06ea964 NC |
756 | 1, /* rightshift */ |
757 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
758 | 12, /* bitsize */ | |
759 | FALSE, /* pc_relative */ | |
760 | 0, /* bitpos */ | |
761 | complain_overflow_dont, /* complain_on_overflow */ | |
762 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 763 | AARCH64_R_STR (LDST16_ABS_LO12_NC), /* name */ |
a06ea964 NC |
764 | FALSE, /* partial_inplace */ |
765 | 0xffe, /* src_mask */ | |
766 | 0xffe, /* dst_mask */ | |
767 | FALSE), /* pcrel_offset */ | |
768 | ||
769 | /* LD/ST32: (S+A) & 0xffc */ | |
a6bb11b2 | 770 | HOWTO (AARCH64_R (LDST32_ABS_LO12_NC), /* type */ |
a06ea964 NC |
771 | 2, /* rightshift */ |
772 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
773 | 12, /* bitsize */ | |
774 | FALSE, /* pc_relative */ | |
775 | 0, /* bitpos */ | |
776 | complain_overflow_dont, /* complain_on_overflow */ | |
777 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 778 | AARCH64_R_STR (LDST32_ABS_LO12_NC), /* name */ |
a06ea964 NC |
779 | FALSE, /* partial_inplace */ |
780 | 0xffc, /* src_mask */ | |
781 | 0xffc, /* dst_mask */ | |
782 | FALSE), /* pcrel_offset */ | |
783 | ||
784 | /* LD/ST64: (S+A) & 0xff8 */ | |
a6bb11b2 | 785 | HOWTO (AARCH64_R (LDST64_ABS_LO12_NC), /* type */ |
a06ea964 NC |
786 | 3, /* rightshift */ |
787 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
788 | 12, /* bitsize */ | |
789 | FALSE, /* pc_relative */ | |
790 | 0, /* bitpos */ | |
791 | complain_overflow_dont, /* complain_on_overflow */ | |
792 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 793 | AARCH64_R_STR (LDST64_ABS_LO12_NC), /* name */ |
a06ea964 NC |
794 | FALSE, /* partial_inplace */ |
795 | 0xff8, /* src_mask */ | |
796 | 0xff8, /* dst_mask */ | |
797 | FALSE), /* pcrel_offset */ | |
798 | ||
a06ea964 | 799 | /* LD/ST128: (S+A) & 0xff0 */ |
a6bb11b2 | 800 | HOWTO (AARCH64_R (LDST128_ABS_LO12_NC), /* type */ |
a06ea964 NC |
801 | 4, /* rightshift */ |
802 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
803 | 12, /* bitsize */ | |
804 | FALSE, /* pc_relative */ | |
805 | 0, /* bitpos */ | |
806 | complain_overflow_dont, /* complain_on_overflow */ | |
807 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 808 | AARCH64_R_STR (LDST128_ABS_LO12_NC), /* name */ |
a06ea964 NC |
809 | FALSE, /* partial_inplace */ |
810 | 0xff0, /* src_mask */ | |
811 | 0xff0, /* dst_mask */ | |
812 | FALSE), /* pcrel_offset */ | |
813 | ||
f41aef5f RE |
814 | /* Set a load-literal immediate field to bits |
815 | 0x1FFFFC of G(S)-P */ | |
a6bb11b2 | 816 | HOWTO (AARCH64_R (GOT_LD_PREL19), /* type */ |
f41aef5f RE |
817 | 2, /* rightshift */ |
818 | 2, /* size (0 = byte,1 = short,2 = long) */ | |
819 | 19, /* bitsize */ | |
820 | TRUE, /* pc_relative */ | |
821 | 0, /* bitpos */ | |
822 | complain_overflow_signed, /* complain_on_overflow */ | |
823 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 824 | AARCH64_R_STR (GOT_LD_PREL19), /* name */ |
f41aef5f RE |
825 | FALSE, /* partial_inplace */ |
826 | 0xffffe0, /* src_mask */ | |
827 | 0xffffe0, /* dst_mask */ | |
828 | TRUE), /* pcrel_offset */ | |
829 | ||
a06ea964 NC |
830 | /* Get to the page for the GOT entry for the symbol |
831 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 832 | HOWTO (AARCH64_R (ADR_GOT_PAGE), /* type */ |
a06ea964 NC |
833 | 12, /* rightshift */ |
834 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
835 | 21, /* bitsize */ | |
836 | TRUE, /* pc_relative */ | |
837 | 0, /* bitpos */ | |
838 | complain_overflow_dont, /* complain_on_overflow */ | |
839 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 840 | AARCH64_R_STR (ADR_GOT_PAGE), /* name */ |
a06ea964 NC |
841 | FALSE, /* partial_inplace */ |
842 | 0x1fffff, /* src_mask */ | |
843 | 0x1fffff, /* dst_mask */ | |
844 | TRUE), /* pcrel_offset */ | |
845 | ||
a6bb11b2 YZ |
846 | /* LD64: GOT offset G(S) & 0xff8 */ |
847 | HOWTO64 (AARCH64_R (LD64_GOT_LO12_NC), /* type */ | |
a06ea964 NC |
848 | 3, /* rightshift */ |
849 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
850 | 12, /* bitsize */ | |
851 | FALSE, /* pc_relative */ | |
852 | 0, /* bitpos */ | |
853 | complain_overflow_dont, /* complain_on_overflow */ | |
854 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 855 | AARCH64_R_STR (LD64_GOT_LO12_NC), /* name */ |
a06ea964 NC |
856 | FALSE, /* partial_inplace */ |
857 | 0xff8, /* src_mask */ | |
858 | 0xff8, /* dst_mask */ | |
a6bb11b2 | 859 | FALSE), /* pcrel_offset */ |
a06ea964 | 860 | |
a6bb11b2 YZ |
861 | /* LD32: GOT offset G(S) & 0xffc */ |
862 | HOWTO32 (AARCH64_R (LD32_GOT_LO12_NC), /* type */ | |
863 | 2, /* rightshift */ | |
864 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
865 | 12, /* bitsize */ | |
866 | FALSE, /* pc_relative */ | |
867 | 0, /* bitpos */ | |
868 | complain_overflow_dont, /* complain_on_overflow */ | |
869 | bfd_elf_generic_reloc, /* special_function */ | |
870 | AARCH64_R_STR (LD32_GOT_LO12_NC), /* name */ | |
871 | FALSE, /* partial_inplace */ | |
872 | 0xffc, /* src_mask */ | |
873 | 0xffc, /* dst_mask */ | |
874 | FALSE), /* pcrel_offset */ | |
a06ea964 | 875 | |
87f5fbcc RL |
876 | /* LD64: GOT offset for the symbol. */ |
877 | HOWTO64 (AARCH64_R (LD64_GOTOFF_LO15), /* type */ | |
878 | 3, /* rightshift */ | |
879 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
880 | 12, /* bitsize */ | |
881 | FALSE, /* pc_relative */ | |
882 | 0, /* bitpos */ | |
883 | complain_overflow_unsigned, /* complain_on_overflow */ | |
884 | bfd_elf_generic_reloc, /* special_function */ | |
885 | AARCH64_R_STR (LD64_GOTOFF_LO15), /* name */ | |
886 | FALSE, /* partial_inplace */ | |
887 | 0x7ff8, /* src_mask */ | |
888 | 0x7ff8, /* dst_mask */ | |
889 | FALSE), /* pcrel_offset */ | |
890 | ||
3d715ce4 JW |
891 | /* LD32: GOT offset to the page address of GOT table. |
892 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x5ffc. */ | |
893 | HOWTO32 (AARCH64_R (LD32_GOTPAGE_LO14), /* type */ | |
894 | 2, /* rightshift */ | |
895 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
896 | 12, /* bitsize */ | |
897 | FALSE, /* pc_relative */ | |
898 | 0, /* bitpos */ | |
899 | complain_overflow_unsigned, /* complain_on_overflow */ | |
900 | bfd_elf_generic_reloc, /* special_function */ | |
901 | AARCH64_R_STR (LD32_GOTPAGE_LO14), /* name */ | |
902 | FALSE, /* partial_inplace */ | |
903 | 0x5ffc, /* src_mask */ | |
904 | 0x5ffc, /* dst_mask */ | |
905 | FALSE), /* pcrel_offset */ | |
906 | ||
a921b5bd JW |
907 | /* LD64: GOT offset to the page address of GOT table. |
908 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */ | |
909 | HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15), /* type */ | |
910 | 3, /* rightshift */ | |
911 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
912 | 12, /* bitsize */ | |
913 | FALSE, /* pc_relative */ | |
914 | 0, /* bitpos */ | |
915 | complain_overflow_unsigned, /* complain_on_overflow */ | |
916 | bfd_elf_generic_reloc, /* special_function */ | |
917 | AARCH64_R_STR (LD64_GOTPAGE_LO15), /* name */ | |
918 | FALSE, /* partial_inplace */ | |
919 | 0x7ff8, /* src_mask */ | |
920 | 0x7ff8, /* dst_mask */ | |
921 | FALSE), /* pcrel_offset */ | |
922 | ||
a06ea964 NC |
923 | /* Get to the page for the GOT entry for the symbol |
924 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 925 | HOWTO (AARCH64_R (TLSGD_ADR_PAGE21), /* type */ |
a06ea964 NC |
926 | 12, /* rightshift */ |
927 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
928 | 21, /* bitsize */ | |
929 | TRUE, /* pc_relative */ | |
930 | 0, /* bitpos */ | |
931 | complain_overflow_dont, /* complain_on_overflow */ | |
932 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 933 | AARCH64_R_STR (TLSGD_ADR_PAGE21), /* name */ |
a06ea964 NC |
934 | FALSE, /* partial_inplace */ |
935 | 0x1fffff, /* src_mask */ | |
936 | 0x1fffff, /* dst_mask */ | |
937 | TRUE), /* pcrel_offset */ | |
938 | ||
3c12b054 MS |
939 | HOWTO (AARCH64_R (TLSGD_ADR_PREL21), /* type */ |
940 | 0, /* rightshift */ | |
941 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
942 | 21, /* bitsize */ | |
943 | TRUE, /* pc_relative */ | |
944 | 0, /* bitpos */ | |
945 | complain_overflow_dont, /* complain_on_overflow */ | |
946 | bfd_elf_generic_reloc, /* special_function */ | |
947 | AARCH64_R_STR (TLSGD_ADR_PREL21), /* name */ | |
948 | FALSE, /* partial_inplace */ | |
949 | 0x1fffff, /* src_mask */ | |
950 | 0x1fffff, /* dst_mask */ | |
951 | TRUE), /* pcrel_offset */ | |
952 | ||
a06ea964 | 953 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ |
a6bb11b2 | 954 | HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC), /* type */ |
a06ea964 NC |
955 | 0, /* rightshift */ |
956 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
957 | 12, /* bitsize */ | |
958 | FALSE, /* pc_relative */ | |
959 | 0, /* bitpos */ | |
960 | complain_overflow_dont, /* complain_on_overflow */ | |
961 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 962 | AARCH64_R_STR (TLSGD_ADD_LO12_NC), /* name */ |
a06ea964 NC |
963 | FALSE, /* partial_inplace */ |
964 | 0xfff, /* src_mask */ | |
965 | 0xfff, /* dst_mask */ | |
966 | FALSE), /* pcrel_offset */ | |
967 | ||
a6bb11b2 | 968 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1), /* type */ |
a06ea964 NC |
969 | 16, /* rightshift */ |
970 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
971 | 16, /* bitsize */ | |
972 | FALSE, /* pc_relative */ | |
973 | 0, /* bitpos */ | |
974 | complain_overflow_dont, /* complain_on_overflow */ | |
975 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 976 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1), /* name */ |
a06ea964 NC |
977 | FALSE, /* partial_inplace */ |
978 | 0xffff, /* src_mask */ | |
979 | 0xffff, /* dst_mask */ | |
980 | FALSE), /* pcrel_offset */ | |
981 | ||
a6bb11b2 | 982 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */ |
a06ea964 NC |
983 | 0, /* rightshift */ |
984 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
49d8f92c | 985 | 16, /* bitsize */ |
a06ea964 NC |
986 | FALSE, /* pc_relative */ |
987 | 0, /* bitpos */ | |
988 | complain_overflow_dont, /* complain_on_overflow */ | |
989 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 990 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC), /* name */ |
a06ea964 NC |
991 | FALSE, /* partial_inplace */ |
992 | 0xffff, /* src_mask */ | |
993 | 0xffff, /* dst_mask */ | |
994 | FALSE), /* pcrel_offset */ | |
995 | ||
a6bb11b2 | 996 | HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21), /* type */ |
a06ea964 NC |
997 | 12, /* rightshift */ |
998 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
999 | 21, /* bitsize */ | |
1000 | FALSE, /* pc_relative */ | |
1001 | 0, /* bitpos */ | |
1002 | complain_overflow_dont, /* complain_on_overflow */ | |
1003 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1004 | AARCH64_R_STR (TLSIE_ADR_GOTTPREL_PAGE21), /* name */ |
a06ea964 NC |
1005 | FALSE, /* partial_inplace */ |
1006 | 0x1fffff, /* src_mask */ | |
1007 | 0x1fffff, /* dst_mask */ | |
1008 | FALSE), /* pcrel_offset */ | |
1009 | ||
a6bb11b2 | 1010 | HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_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 (TLSIE_LD64_GOTTPREL_LO12_NC), /* name */ |
a06ea964 NC |
1019 | FALSE, /* partial_inplace */ |
1020 | 0xff8, /* src_mask */ | |
1021 | 0xff8, /* dst_mask */ | |
1022 | FALSE), /* pcrel_offset */ | |
1023 | ||
a6bb11b2 YZ |
1024 | HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC), /* type */ |
1025 | 2, /* rightshift */ | |
1026 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1027 | 12, /* bitsize */ | |
1028 | FALSE, /* pc_relative */ | |
1029 | 0, /* bitpos */ | |
1030 | complain_overflow_dont, /* complain_on_overflow */ | |
1031 | bfd_elf_generic_reloc, /* special_function */ | |
1032 | AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC), /* name */ | |
1033 | FALSE, /* partial_inplace */ | |
1034 | 0xffc, /* src_mask */ | |
1035 | 0xffc, /* dst_mask */ | |
1036 | FALSE), /* pcrel_offset */ | |
1037 | ||
1038 | HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19), /* type */ | |
bb3f9ed8 | 1039 | 2, /* rightshift */ |
a06ea964 | 1040 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
043bf05a | 1041 | 19, /* bitsize */ |
a06ea964 NC |
1042 | FALSE, /* pc_relative */ |
1043 | 0, /* bitpos */ | |
1044 | complain_overflow_dont, /* complain_on_overflow */ | |
1045 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1046 | AARCH64_R_STR (TLSIE_LD_GOTTPREL_PREL19), /* name */ |
a06ea964 NC |
1047 | FALSE, /* partial_inplace */ |
1048 | 0x1ffffc, /* src_mask */ | |
1049 | 0x1ffffc, /* dst_mask */ | |
1050 | FALSE), /* pcrel_offset */ | |
1051 | ||
49df5539 JW |
1052 | /* ADD: bit[23:12] of byte offset to module TLS base address. */ |
1053 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_HI12), /* type */ | |
1054 | 12, /* rightshift */ | |
1055 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1056 | 12, /* bitsize */ | |
1057 | FALSE, /* pc_relative */ | |
1058 | 0, /* bitpos */ | |
1059 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1060 | bfd_elf_generic_reloc, /* special_function */ | |
1061 | AARCH64_R_STR (TLSLD_ADD_DTPREL_HI12), /* name */ | |
1062 | FALSE, /* partial_inplace */ | |
1063 | 0xfff, /* src_mask */ | |
1064 | 0xfff, /* dst_mask */ | |
1065 | FALSE), /* pcrel_offset */ | |
1066 | ||
70151fb5 JW |
1067 | /* Unsigned 12 bit byte offset to module TLS base address. */ |
1068 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12), /* type */ | |
1069 | 0, /* rightshift */ | |
1070 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1071 | 12, /* bitsize */ | |
1072 | FALSE, /* pc_relative */ | |
1073 | 0, /* bitpos */ | |
1074 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1075 | bfd_elf_generic_reloc, /* special_function */ | |
1076 | AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12), /* name */ | |
1077 | FALSE, /* partial_inplace */ | |
1078 | 0xfff, /* src_mask */ | |
1079 | 0xfff, /* dst_mask */ | |
1080 | FALSE), /* pcrel_offset */ | |
13289c10 JW |
1081 | |
1082 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12. */ | |
1083 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12_NC), /* type */ | |
1084 | 0, /* rightshift */ | |
1085 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1086 | 12, /* bitsize */ | |
1087 | FALSE, /* pc_relative */ | |
1088 | 0, /* bitpos */ | |
1089 | complain_overflow_dont, /* complain_on_overflow */ | |
1090 | bfd_elf_generic_reloc, /* special_function */ | |
1091 | AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12_NC), /* name */ | |
1092 | FALSE, /* partial_inplace */ | |
1093 | 0xfff, /* src_mask */ | |
1094 | 0xfff, /* dst_mask */ | |
1095 | FALSE), /* pcrel_offset */ | |
70151fb5 | 1096 | |
a12fad50 JW |
1097 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ |
1098 | HOWTO (AARCH64_R (TLSLD_ADD_LO12_NC), /* type */ | |
1099 | 0, /* rightshift */ | |
1100 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1101 | 12, /* bitsize */ | |
1102 | FALSE, /* pc_relative */ | |
1103 | 0, /* bitpos */ | |
1104 | complain_overflow_dont, /* complain_on_overflow */ | |
1105 | bfd_elf_generic_reloc, /* special_function */ | |
1106 | AARCH64_R_STR (TLSLD_ADD_LO12_NC), /* name */ | |
1107 | FALSE, /* partial_inplace */ | |
1108 | 0xfff, /* src_mask */ | |
1109 | 0xfff, /* dst_mask */ | |
1110 | FALSE), /* pcrel_offset */ | |
1111 | ||
1107e076 JW |
1112 | /* Get to the page for the GOT entry for the symbol |
1113 | (G(S) - P) using an ADRP instruction. */ | |
1114 | HOWTO (AARCH64_R (TLSLD_ADR_PAGE21), /* type */ | |
1115 | 12, /* rightshift */ | |
1116 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1117 | 21, /* bitsize */ | |
1118 | TRUE, /* pc_relative */ | |
1119 | 0, /* bitpos */ | |
1120 | complain_overflow_signed, /* complain_on_overflow */ | |
1121 | bfd_elf_generic_reloc, /* special_function */ | |
1122 | AARCH64_R_STR (TLSLD_ADR_PAGE21), /* name */ | |
1123 | FALSE, /* partial_inplace */ | |
1124 | 0x1fffff, /* src_mask */ | |
1125 | 0x1fffff, /* dst_mask */ | |
1126 | TRUE), /* pcrel_offset */ | |
1127 | ||
6c37fedc JW |
1128 | HOWTO (AARCH64_R (TLSLD_ADR_PREL21), /* type */ |
1129 | 0, /* rightshift */ | |
1130 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1131 | 21, /* bitsize */ | |
1132 | TRUE, /* pc_relative */ | |
1133 | 0, /* bitpos */ | |
1134 | complain_overflow_signed, /* complain_on_overflow */ | |
1135 | bfd_elf_generic_reloc, /* special_function */ | |
1136 | AARCH64_R_STR (TLSLD_ADR_PREL21), /* name */ | |
1137 | FALSE, /* partial_inplace */ | |
1138 | 0x1fffff, /* src_mask */ | |
1139 | 0x1fffff, /* dst_mask */ | |
1140 | TRUE), /* pcrel_offset */ | |
1141 | ||
4c562523 JW |
1142 | /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */ |
1143 | HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12), /* type */ | |
1144 | 1, /* rightshift */ | |
1145 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1146 | 11, /* bitsize */ | |
1147 | FALSE, /* pc_relative */ | |
1148 | 10, /* bitpos */ | |
1149 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1150 | bfd_elf_generic_reloc, /* special_function */ | |
1151 | AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12), /* name */ | |
1152 | FALSE, /* partial_inplace */ | |
1153 | 0x1ffc00, /* src_mask */ | |
1154 | 0x1ffc00, /* dst_mask */ | |
1155 | FALSE), /* pcrel_offset */ | |
1156 | ||
1157 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12, but no overflow check. */ | |
1158 | HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12_NC), /* type */ | |
1159 | 1, /* rightshift */ | |
1160 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1161 | 11, /* bitsize */ | |
1162 | FALSE, /* pc_relative */ | |
1163 | 10, /* bitpos */ | |
1164 | complain_overflow_dont, /* complain_on_overflow */ | |
1165 | bfd_elf_generic_reloc, /* special_function */ | |
1166 | AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12_NC), /* name */ | |
1167 | FALSE, /* partial_inplace */ | |
1168 | 0x1ffc00, /* src_mask */ | |
1169 | 0x1ffc00, /* dst_mask */ | |
1170 | FALSE), /* pcrel_offset */ | |
1171 | ||
1172 | /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */ | |
1173 | HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12), /* type */ | |
1174 | 2, /* rightshift */ | |
1175 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1176 | 10, /* bitsize */ | |
1177 | FALSE, /* pc_relative */ | |
1178 | 10, /* bitpos */ | |
1179 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1180 | bfd_elf_generic_reloc, /* special_function */ | |
1181 | AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12), /* name */ | |
1182 | FALSE, /* partial_inplace */ | |
1183 | 0x3ffc00, /* src_mask */ | |
1184 | 0x3ffc00, /* dst_mask */ | |
1185 | FALSE), /* pcrel_offset */ | |
1186 | ||
1187 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12, but no overflow check. */ | |
1188 | HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12_NC), /* type */ | |
1189 | 2, /* rightshift */ | |
1190 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1191 | 10, /* bitsize */ | |
1192 | FALSE, /* pc_relative */ | |
1193 | 10, /* bitpos */ | |
1194 | complain_overflow_dont, /* complain_on_overflow */ | |
1195 | bfd_elf_generic_reloc, /* special_function */ | |
1196 | AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12_NC), /* name */ | |
1197 | FALSE, /* partial_inplace */ | |
1198 | 0xffc00, /* src_mask */ | |
1199 | 0xffc00, /* dst_mask */ | |
1200 | FALSE), /* pcrel_offset */ | |
1201 | ||
1202 | /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */ | |
1203 | HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12), /* type */ | |
1204 | 3, /* rightshift */ | |
1205 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1206 | 9, /* bitsize */ | |
1207 | FALSE, /* pc_relative */ | |
1208 | 10, /* bitpos */ | |
1209 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1210 | bfd_elf_generic_reloc, /* special_function */ | |
1211 | AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12), /* name */ | |
1212 | FALSE, /* partial_inplace */ | |
1213 | 0x3ffc00, /* src_mask */ | |
1214 | 0x3ffc00, /* dst_mask */ | |
1215 | FALSE), /* pcrel_offset */ | |
1216 | ||
1217 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12, but no overflow check. */ | |
1218 | HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12_NC), /* type */ | |
1219 | 3, /* rightshift */ | |
1220 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1221 | 9, /* bitsize */ | |
1222 | FALSE, /* pc_relative */ | |
1223 | 10, /* bitpos */ | |
1224 | complain_overflow_dont, /* complain_on_overflow */ | |
1225 | bfd_elf_generic_reloc, /* special_function */ | |
1226 | AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12_NC), /* name */ | |
1227 | FALSE, /* partial_inplace */ | |
1228 | 0x7fc00, /* src_mask */ | |
1229 | 0x7fc00, /* dst_mask */ | |
1230 | FALSE), /* pcrel_offset */ | |
1231 | ||
1232 | /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */ | |
1233 | HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12), /* type */ | |
1234 | 0, /* rightshift */ | |
1235 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1236 | 12, /* bitsize */ | |
1237 | FALSE, /* pc_relative */ | |
1238 | 10, /* bitpos */ | |
1239 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1240 | bfd_elf_generic_reloc, /* special_function */ | |
1241 | AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12), /* name */ | |
1242 | FALSE, /* partial_inplace */ | |
1243 | 0x3ffc00, /* src_mask */ | |
1244 | 0x3ffc00, /* dst_mask */ | |
1245 | FALSE), /* pcrel_offset */ | |
1246 | ||
1247 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12, but no overflow check. */ | |
1248 | HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12_NC), /* type */ | |
1249 | 0, /* rightshift */ | |
1250 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1251 | 12, /* bitsize */ | |
1252 | FALSE, /* pc_relative */ | |
1253 | 10, /* bitpos */ | |
1254 | complain_overflow_dont, /* complain_on_overflow */ | |
1255 | bfd_elf_generic_reloc, /* special_function */ | |
1256 | AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12_NC), /* name */ | |
1257 | FALSE, /* partial_inplace */ | |
1258 | 0x3ffc00, /* src_mask */ | |
1259 | 0x3ffc00, /* dst_mask */ | |
1260 | FALSE), /* pcrel_offset */ | |
1261 | ||
49df5539 JW |
1262 | /* MOVZ: bit[15:0] of byte offset to module TLS base address. */ |
1263 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0), /* type */ | |
1264 | 0, /* rightshift */ | |
1265 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1266 | 16, /* bitsize */ | |
1267 | FALSE, /* pc_relative */ | |
1268 | 0, /* bitpos */ | |
1269 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1270 | bfd_elf_generic_reloc, /* special_function */ | |
1271 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0), /* name */ | |
1272 | FALSE, /* partial_inplace */ | |
1273 | 0xffff, /* src_mask */ | |
1274 | 0xffff, /* dst_mask */ | |
1275 | FALSE), /* pcrel_offset */ | |
1276 | ||
1277 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0. */ | |
1278 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0_NC), /* type */ | |
1279 | 0, /* rightshift */ | |
1280 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1281 | 16, /* bitsize */ | |
1282 | FALSE, /* pc_relative */ | |
1283 | 0, /* bitpos */ | |
1284 | complain_overflow_dont, /* complain_on_overflow */ | |
1285 | bfd_elf_generic_reloc, /* special_function */ | |
1286 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0_NC), /* name */ | |
1287 | FALSE, /* partial_inplace */ | |
1288 | 0xffff, /* src_mask */ | |
1289 | 0xffff, /* dst_mask */ | |
1290 | FALSE), /* pcrel_offset */ | |
1291 | ||
1292 | /* MOVZ: bit[31:16] of byte offset to module TLS base address. */ | |
1293 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G1), /* type */ | |
1294 | 16, /* rightshift */ | |
1295 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1296 | 16, /* bitsize */ | |
1297 | FALSE, /* pc_relative */ | |
1298 | 0, /* bitpos */ | |
1299 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1300 | bfd_elf_generic_reloc, /* special_function */ | |
1301 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1), /* name */ | |
1302 | FALSE, /* partial_inplace */ | |
1303 | 0xffff, /* src_mask */ | |
1304 | 0xffff, /* dst_mask */ | |
1305 | FALSE), /* pcrel_offset */ | |
1306 | ||
1307 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1. */ | |
1308 | HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G1_NC), /* type */ | |
1309 | 16, /* rightshift */ | |
1310 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1311 | 16, /* bitsize */ | |
1312 | FALSE, /* pc_relative */ | |
1313 | 0, /* bitpos */ | |
1314 | complain_overflow_dont, /* complain_on_overflow */ | |
1315 | bfd_elf_generic_reloc, /* special_function */ | |
1316 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1_NC), /* name */ | |
1317 | FALSE, /* partial_inplace */ | |
1318 | 0xffff, /* src_mask */ | |
1319 | 0xffff, /* dst_mask */ | |
1320 | FALSE), /* pcrel_offset */ | |
1321 | ||
1322 | /* MOVZ: bit[47:32] of byte offset to module TLS base address. */ | |
1323 | HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G2), /* type */ | |
1324 | 32, /* 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 (TLSLD_MOVW_DTPREL_G2), /* name */ | |
1332 | FALSE, /* partial_inplace */ | |
1333 | 0xffff, /* src_mask */ | |
1334 | 0xffff, /* dst_mask */ | |
1335 | FALSE), /* pcrel_offset */ | |
1336 | ||
a6bb11b2 | 1337 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2), /* type */ |
bb3f9ed8 | 1338 | 32, /* rightshift */ |
a06ea964 | 1339 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1340 | 16, /* bitsize */ |
a06ea964 NC |
1341 | FALSE, /* pc_relative */ |
1342 | 0, /* bitpos */ | |
0172429c | 1343 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1344 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1345 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G2), /* name */ |
a06ea964 NC |
1346 | FALSE, /* partial_inplace */ |
1347 | 0xffff, /* src_mask */ | |
1348 | 0xffff, /* dst_mask */ | |
1349 | FALSE), /* pcrel_offset */ | |
1350 | ||
a6bb11b2 | 1351 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1), /* type */ |
bb3f9ed8 | 1352 | 16, /* rightshift */ |
a06ea964 | 1353 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1354 | 16, /* bitsize */ |
a06ea964 NC |
1355 | FALSE, /* pc_relative */ |
1356 | 0, /* bitpos */ | |
1357 | complain_overflow_dont, /* complain_on_overflow */ | |
1358 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1359 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1), /* name */ |
a06ea964 NC |
1360 | FALSE, /* partial_inplace */ |
1361 | 0xffff, /* src_mask */ | |
1362 | 0xffff, /* dst_mask */ | |
1363 | FALSE), /* pcrel_offset */ | |
1364 | ||
a6bb11b2 | 1365 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */ |
bb3f9ed8 | 1366 | 16, /* rightshift */ |
a06ea964 | 1367 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1368 | 16, /* bitsize */ |
a06ea964 NC |
1369 | FALSE, /* pc_relative */ |
1370 | 0, /* bitpos */ | |
1371 | complain_overflow_dont, /* complain_on_overflow */ | |
1372 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1373 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC), /* name */ |
a06ea964 NC |
1374 | FALSE, /* partial_inplace */ |
1375 | 0xffff, /* src_mask */ | |
1376 | 0xffff, /* dst_mask */ | |
1377 | FALSE), /* pcrel_offset */ | |
1378 | ||
a6bb11b2 | 1379 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0), /* type */ |
a06ea964 NC |
1380 | 0, /* rightshift */ |
1381 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
07875fbc | 1382 | 16, /* bitsize */ |
a06ea964 NC |
1383 | FALSE, /* pc_relative */ |
1384 | 0, /* bitpos */ | |
1385 | complain_overflow_dont, /* complain_on_overflow */ | |
1386 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1387 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0), /* name */ |
a06ea964 NC |
1388 | FALSE, /* partial_inplace */ |
1389 | 0xffff, /* src_mask */ | |
1390 | 0xffff, /* dst_mask */ | |
1391 | FALSE), /* pcrel_offset */ | |
1392 | ||
a6bb11b2 | 1393 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC), /* type */ |
a06ea964 NC |
1394 | 0, /* rightshift */ |
1395 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
07875fbc | 1396 | 16, /* bitsize */ |
a06ea964 NC |
1397 | FALSE, /* pc_relative */ |
1398 | 0, /* bitpos */ | |
1399 | complain_overflow_dont, /* complain_on_overflow */ | |
1400 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1401 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC), /* name */ |
a06ea964 NC |
1402 | FALSE, /* partial_inplace */ |
1403 | 0xffff, /* src_mask */ | |
1404 | 0xffff, /* dst_mask */ | |
1405 | FALSE), /* pcrel_offset */ | |
1406 | ||
a6bb11b2 | 1407 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12), /* type */ |
bb3f9ed8 | 1408 | 12, /* rightshift */ |
a06ea964 NC |
1409 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1410 | 12, /* bitsize */ | |
1411 | FALSE, /* pc_relative */ | |
1412 | 0, /* bitpos */ | |
bab91cce | 1413 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1414 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1415 | AARCH64_R_STR (TLSLE_ADD_TPREL_HI12), /* name */ |
a06ea964 NC |
1416 | FALSE, /* partial_inplace */ |
1417 | 0xfff, /* src_mask */ | |
1418 | 0xfff, /* dst_mask */ | |
1419 | FALSE), /* pcrel_offset */ | |
1420 | ||
a6bb11b2 | 1421 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12), /* type */ |
a06ea964 NC |
1422 | 0, /* rightshift */ |
1423 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1424 | 12, /* bitsize */ | |
1425 | FALSE, /* pc_relative */ | |
1426 | 0, /* bitpos */ | |
36e6c140 | 1427 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1428 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1429 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12), /* name */ |
a06ea964 NC |
1430 | FALSE, /* partial_inplace */ |
1431 | 0xfff, /* src_mask */ | |
1432 | 0xfff, /* dst_mask */ | |
1433 | FALSE), /* pcrel_offset */ | |
1434 | ||
a6bb11b2 | 1435 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC), /* type */ |
a06ea964 NC |
1436 | 0, /* rightshift */ |
1437 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1438 | 12, /* bitsize */ | |
1439 | FALSE, /* pc_relative */ | |
1440 | 0, /* bitpos */ | |
1441 | complain_overflow_dont, /* complain_on_overflow */ | |
1442 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1443 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC), /* name */ |
a06ea964 NC |
1444 | FALSE, /* partial_inplace */ |
1445 | 0xfff, /* src_mask */ | |
1446 | 0xfff, /* dst_mask */ | |
1447 | FALSE), /* pcrel_offset */ | |
a06ea964 | 1448 | |
a6bb11b2 | 1449 | HOWTO (AARCH64_R (TLSDESC_LD_PREL19), /* type */ |
bb3f9ed8 | 1450 | 2, /* rightshift */ |
a06ea964 | 1451 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1ada945d | 1452 | 19, /* bitsize */ |
a06ea964 NC |
1453 | TRUE, /* pc_relative */ |
1454 | 0, /* bitpos */ | |
1455 | complain_overflow_dont, /* complain_on_overflow */ | |
1456 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1457 | AARCH64_R_STR (TLSDESC_LD_PREL19), /* name */ |
a06ea964 | 1458 | FALSE, /* partial_inplace */ |
1ada945d MS |
1459 | 0x0ffffe0, /* src_mask */ |
1460 | 0x0ffffe0, /* dst_mask */ | |
a06ea964 NC |
1461 | TRUE), /* pcrel_offset */ |
1462 | ||
a6bb11b2 | 1463 | HOWTO (AARCH64_R (TLSDESC_ADR_PREL21), /* type */ |
a06ea964 NC |
1464 | 0, /* rightshift */ |
1465 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1466 | 21, /* bitsize */ | |
1467 | TRUE, /* pc_relative */ | |
1468 | 0, /* bitpos */ | |
1469 | complain_overflow_dont, /* complain_on_overflow */ | |
1470 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1471 | AARCH64_R_STR (TLSDESC_ADR_PREL21), /* name */ |
a06ea964 NC |
1472 | FALSE, /* partial_inplace */ |
1473 | 0x1fffff, /* src_mask */ | |
1474 | 0x1fffff, /* dst_mask */ | |
1475 | TRUE), /* pcrel_offset */ | |
1476 | ||
1477 | /* Get to the page for the GOT entry for the symbol | |
1478 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 1479 | HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21), /* type */ |
a06ea964 NC |
1480 | 12, /* rightshift */ |
1481 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1482 | 21, /* bitsize */ | |
1483 | TRUE, /* pc_relative */ | |
1484 | 0, /* bitpos */ | |
1485 | complain_overflow_dont, /* complain_on_overflow */ | |
1486 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1487 | AARCH64_R_STR (TLSDESC_ADR_PAGE21), /* name */ |
a06ea964 NC |
1488 | FALSE, /* partial_inplace */ |
1489 | 0x1fffff, /* src_mask */ | |
1490 | 0x1fffff, /* dst_mask */ | |
1491 | TRUE), /* pcrel_offset */ | |
1492 | ||
a6bb11b2 YZ |
1493 | /* LD64: GOT offset G(S) & 0xff8. */ |
1494 | HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12_NC), /* type */ | |
a06ea964 NC |
1495 | 3, /* rightshift */ |
1496 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1497 | 12, /* bitsize */ | |
1498 | FALSE, /* pc_relative */ | |
1499 | 0, /* bitpos */ | |
1500 | complain_overflow_dont, /* complain_on_overflow */ | |
1501 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1502 | AARCH64_R_STR (TLSDESC_LD64_LO12_NC), /* name */ |
a06ea964 | 1503 | FALSE, /* partial_inplace */ |
a6bb11b2 YZ |
1504 | 0xff8, /* src_mask */ |
1505 | 0xff8, /* dst_mask */ | |
1506 | FALSE), /* pcrel_offset */ | |
1507 | ||
1508 | /* LD32: GOT offset G(S) & 0xffc. */ | |
1509 | HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC), /* type */ | |
1510 | 2, /* rightshift */ | |
1511 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1512 | 12, /* bitsize */ | |
1513 | FALSE, /* pc_relative */ | |
1514 | 0, /* bitpos */ | |
1515 | complain_overflow_dont, /* complain_on_overflow */ | |
1516 | bfd_elf_generic_reloc, /* special_function */ | |
1517 | AARCH64_R_STR (TLSDESC_LD32_LO12_NC), /* name */ | |
1518 | FALSE, /* partial_inplace */ | |
1519 | 0xffc, /* src_mask */ | |
1520 | 0xffc, /* dst_mask */ | |
a06ea964 NC |
1521 | FALSE), /* pcrel_offset */ |
1522 | ||
1523 | /* ADD: GOT offset G(S) & 0xfff. */ | |
a6bb11b2 | 1524 | HOWTO (AARCH64_R (TLSDESC_ADD_LO12_NC), /* type */ |
a06ea964 NC |
1525 | 0, /* rightshift */ |
1526 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1527 | 12, /* bitsize */ | |
1528 | FALSE, /* pc_relative */ | |
1529 | 0, /* bitpos */ | |
1530 | complain_overflow_dont, /* complain_on_overflow */ | |
1531 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1532 | AARCH64_R_STR (TLSDESC_ADD_LO12_NC), /* name */ |
a06ea964 NC |
1533 | FALSE, /* partial_inplace */ |
1534 | 0xfff, /* src_mask */ | |
1535 | 0xfff, /* dst_mask */ | |
1536 | FALSE), /* pcrel_offset */ | |
1537 | ||
a6bb11b2 | 1538 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G1), /* type */ |
bb3f9ed8 | 1539 | 16, /* rightshift */ |
a06ea964 NC |
1540 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1541 | 12, /* bitsize */ | |
1542 | FALSE, /* pc_relative */ | |
1543 | 0, /* bitpos */ | |
1544 | complain_overflow_dont, /* complain_on_overflow */ | |
1545 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1546 | AARCH64_R_STR (TLSDESC_OFF_G1), /* name */ |
a06ea964 NC |
1547 | FALSE, /* partial_inplace */ |
1548 | 0xffff, /* src_mask */ | |
1549 | 0xffff, /* dst_mask */ | |
1550 | FALSE), /* pcrel_offset */ | |
1551 | ||
a6bb11b2 | 1552 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC), /* type */ |
a06ea964 NC |
1553 | 0, /* rightshift */ |
1554 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1555 | 12, /* bitsize */ | |
1556 | FALSE, /* pc_relative */ | |
1557 | 0, /* bitpos */ | |
1558 | complain_overflow_dont, /* complain_on_overflow */ | |
1559 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1560 | AARCH64_R_STR (TLSDESC_OFF_G0_NC), /* name */ |
a06ea964 NC |
1561 | FALSE, /* partial_inplace */ |
1562 | 0xffff, /* src_mask */ | |
1563 | 0xffff, /* dst_mask */ | |
1564 | FALSE), /* pcrel_offset */ | |
1565 | ||
a6bb11b2 | 1566 | HOWTO64 (AARCH64_R (TLSDESC_LDR), /* type */ |
a06ea964 NC |
1567 | 0, /* rightshift */ |
1568 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1569 | 12, /* bitsize */ | |
1570 | FALSE, /* pc_relative */ | |
1571 | 0, /* bitpos */ | |
1572 | complain_overflow_dont, /* complain_on_overflow */ | |
1573 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1574 | AARCH64_R_STR (TLSDESC_LDR), /* name */ |
a06ea964 NC |
1575 | FALSE, /* partial_inplace */ |
1576 | 0x0, /* src_mask */ | |
1577 | 0x0, /* dst_mask */ | |
1578 | FALSE), /* pcrel_offset */ | |
1579 | ||
a6bb11b2 | 1580 | HOWTO64 (AARCH64_R (TLSDESC_ADD), /* type */ |
a06ea964 NC |
1581 | 0, /* rightshift */ |
1582 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1583 | 12, /* bitsize */ | |
1584 | FALSE, /* pc_relative */ | |
1585 | 0, /* bitpos */ | |
1586 | complain_overflow_dont, /* complain_on_overflow */ | |
1587 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1588 | AARCH64_R_STR (TLSDESC_ADD), /* name */ |
a06ea964 NC |
1589 | FALSE, /* partial_inplace */ |
1590 | 0x0, /* src_mask */ | |
1591 | 0x0, /* dst_mask */ | |
1592 | FALSE), /* pcrel_offset */ | |
1593 | ||
a6bb11b2 | 1594 | HOWTO (AARCH64_R (TLSDESC_CALL), /* type */ |
a06ea964 NC |
1595 | 0, /* rightshift */ |
1596 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
7366006f | 1597 | 0, /* bitsize */ |
a06ea964 NC |
1598 | FALSE, /* pc_relative */ |
1599 | 0, /* bitpos */ | |
1600 | complain_overflow_dont, /* complain_on_overflow */ | |
1601 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1602 | AARCH64_R_STR (TLSDESC_CALL), /* name */ |
a06ea964 NC |
1603 | FALSE, /* partial_inplace */ |
1604 | 0x0, /* src_mask */ | |
1605 | 0x0, /* dst_mask */ | |
1606 | FALSE), /* pcrel_offset */ | |
a6bb11b2 YZ |
1607 | |
1608 | HOWTO (AARCH64_R (COPY), /* type */ | |
1609 | 0, /* rightshift */ | |
1610 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1611 | 64, /* bitsize */ | |
1612 | FALSE, /* pc_relative */ | |
1613 | 0, /* bitpos */ | |
1614 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1615 | bfd_elf_generic_reloc, /* special_function */ | |
1616 | AARCH64_R_STR (COPY), /* name */ | |
1617 | TRUE, /* partial_inplace */ | |
1618 | 0xffffffff, /* src_mask */ | |
1619 | 0xffffffff, /* dst_mask */ | |
1620 | FALSE), /* pcrel_offset */ | |
1621 | ||
1622 | HOWTO (AARCH64_R (GLOB_DAT), /* type */ | |
1623 | 0, /* rightshift */ | |
1624 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1625 | 64, /* bitsize */ | |
1626 | FALSE, /* pc_relative */ | |
1627 | 0, /* bitpos */ | |
1628 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1629 | bfd_elf_generic_reloc, /* special_function */ | |
1630 | AARCH64_R_STR (GLOB_DAT), /* name */ | |
1631 | TRUE, /* partial_inplace */ | |
1632 | 0xffffffff, /* src_mask */ | |
1633 | 0xffffffff, /* dst_mask */ | |
1634 | FALSE), /* pcrel_offset */ | |
1635 | ||
1636 | HOWTO (AARCH64_R (JUMP_SLOT), /* type */ | |
1637 | 0, /* rightshift */ | |
1638 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1639 | 64, /* bitsize */ | |
1640 | FALSE, /* pc_relative */ | |
1641 | 0, /* bitpos */ | |
1642 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1643 | bfd_elf_generic_reloc, /* special_function */ | |
1644 | AARCH64_R_STR (JUMP_SLOT), /* name */ | |
1645 | TRUE, /* partial_inplace */ | |
1646 | 0xffffffff, /* src_mask */ | |
1647 | 0xffffffff, /* dst_mask */ | |
1648 | FALSE), /* pcrel_offset */ | |
1649 | ||
1650 | HOWTO (AARCH64_R (RELATIVE), /* type */ | |
1651 | 0, /* rightshift */ | |
1652 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1653 | 64, /* bitsize */ | |
1654 | FALSE, /* pc_relative */ | |
1655 | 0, /* bitpos */ | |
1656 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1657 | bfd_elf_generic_reloc, /* special_function */ | |
1658 | AARCH64_R_STR (RELATIVE), /* name */ | |
1659 | TRUE, /* partial_inplace */ | |
1660 | ALL_ONES, /* src_mask */ | |
1661 | ALL_ONES, /* dst_mask */ | |
1662 | FALSE), /* pcrel_offset */ | |
1663 | ||
1664 | HOWTO (AARCH64_R (TLS_DTPMOD), /* type */ | |
1665 | 0, /* rightshift */ | |
1666 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1667 | 64, /* bitsize */ | |
1668 | FALSE, /* pc_relative */ | |
1669 | 0, /* bitpos */ | |
1670 | complain_overflow_dont, /* complain_on_overflow */ | |
1671 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
1672 | #if ARCH_SIZE == 64 |
1673 | AARCH64_R_STR (TLS_DTPMOD64), /* name */ | |
1674 | #else | |
a6bb11b2 | 1675 | AARCH64_R_STR (TLS_DTPMOD), /* name */ |
da0781dc | 1676 | #endif |
a6bb11b2 YZ |
1677 | FALSE, /* partial_inplace */ |
1678 | 0, /* src_mask */ | |
1679 | ALL_ONES, /* dst_mask */ | |
1680 | FALSE), /* pc_reloffset */ | |
1681 | ||
1682 | HOWTO (AARCH64_R (TLS_DTPREL), /* type */ | |
1683 | 0, /* rightshift */ | |
1684 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1685 | 64, /* bitsize */ | |
1686 | FALSE, /* pc_relative */ | |
1687 | 0, /* bitpos */ | |
1688 | complain_overflow_dont, /* complain_on_overflow */ | |
1689 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
1690 | #if ARCH_SIZE == 64 |
1691 | AARCH64_R_STR (TLS_DTPREL64), /* name */ | |
1692 | #else | |
a6bb11b2 | 1693 | AARCH64_R_STR (TLS_DTPREL), /* name */ |
da0781dc | 1694 | #endif |
a6bb11b2 YZ |
1695 | FALSE, /* partial_inplace */ |
1696 | 0, /* src_mask */ | |
1697 | ALL_ONES, /* dst_mask */ | |
1698 | FALSE), /* pcrel_offset */ | |
1699 | ||
1700 | HOWTO (AARCH64_R (TLS_TPREL), /* type */ | |
1701 | 0, /* rightshift */ | |
1702 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1703 | 64, /* bitsize */ | |
1704 | FALSE, /* pc_relative */ | |
1705 | 0, /* bitpos */ | |
1706 | complain_overflow_dont, /* complain_on_overflow */ | |
1707 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
1708 | #if ARCH_SIZE == 64 |
1709 | AARCH64_R_STR (TLS_TPREL64), /* name */ | |
1710 | #else | |
a6bb11b2 | 1711 | AARCH64_R_STR (TLS_TPREL), /* name */ |
da0781dc | 1712 | #endif |
a6bb11b2 YZ |
1713 | FALSE, /* partial_inplace */ |
1714 | 0, /* src_mask */ | |
1715 | ALL_ONES, /* dst_mask */ | |
1716 | FALSE), /* pcrel_offset */ | |
1717 | ||
1718 | HOWTO (AARCH64_R (TLSDESC), /* type */ | |
1719 | 0, /* rightshift */ | |
1720 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1721 | 64, /* bitsize */ | |
1722 | FALSE, /* pc_relative */ | |
1723 | 0, /* bitpos */ | |
1724 | complain_overflow_dont, /* complain_on_overflow */ | |
1725 | bfd_elf_generic_reloc, /* special_function */ | |
1726 | AARCH64_R_STR (TLSDESC), /* name */ | |
1727 | FALSE, /* partial_inplace */ | |
1728 | 0, /* src_mask */ | |
1729 | ALL_ONES, /* dst_mask */ | |
1730 | FALSE), /* pcrel_offset */ | |
1731 | ||
1732 | HOWTO (AARCH64_R (IRELATIVE), /* type */ | |
1733 | 0, /* rightshift */ | |
1734 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1735 | 64, /* bitsize */ | |
1736 | FALSE, /* pc_relative */ | |
1737 | 0, /* bitpos */ | |
1738 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1739 | bfd_elf_generic_reloc, /* special_function */ | |
1740 | AARCH64_R_STR (IRELATIVE), /* name */ | |
1741 | FALSE, /* partial_inplace */ | |
1742 | 0, /* src_mask */ | |
1743 | ALL_ONES, /* dst_mask */ | |
1744 | FALSE), /* pcrel_offset */ | |
1745 | ||
1746 | EMPTY_HOWTO (0), | |
a06ea964 NC |
1747 | }; |
1748 | ||
a6bb11b2 YZ |
1749 | static reloc_howto_type elfNN_aarch64_howto_none = |
1750 | HOWTO (R_AARCH64_NONE, /* type */ | |
1751 | 0, /* rightshift */ | |
6346d5ca | 1752 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a6bb11b2 YZ |
1753 | 0, /* bitsize */ |
1754 | FALSE, /* pc_relative */ | |
1755 | 0, /* bitpos */ | |
1756 | complain_overflow_dont,/* complain_on_overflow */ | |
1757 | bfd_elf_generic_reloc, /* special_function */ | |
1758 | "R_AARCH64_NONE", /* name */ | |
1759 | FALSE, /* partial_inplace */ | |
1760 | 0, /* src_mask */ | |
1761 | 0, /* dst_mask */ | |
1762 | FALSE); /* pcrel_offset */ | |
1763 | ||
1764 | /* Given HOWTO, return the bfd internal relocation enumerator. */ | |
1765 | ||
1766 | static bfd_reloc_code_real_type | |
1767 | elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type *howto) | |
1768 | { | |
1769 | const int size | |
1770 | = (int) ARRAY_SIZE (elfNN_aarch64_howto_table); | |
1771 | const ptrdiff_t offset | |
1772 | = howto - elfNN_aarch64_howto_table; | |
1773 | ||
1774 | if (offset > 0 && offset < size - 1) | |
1775 | return BFD_RELOC_AARCH64_RELOC_START + offset; | |
1776 | ||
1777 | if (howto == &elfNN_aarch64_howto_none) | |
1778 | return BFD_RELOC_AARCH64_NONE; | |
1779 | ||
1780 | return BFD_RELOC_AARCH64_RELOC_START; | |
1781 | } | |
1782 | ||
1783 | /* Given R_TYPE, return the bfd internal relocation enumerator. */ | |
1784 | ||
1785 | static bfd_reloc_code_real_type | |
1786 | elfNN_aarch64_bfd_reloc_from_type (unsigned int r_type) | |
1787 | { | |
1788 | static bfd_boolean initialized_p = FALSE; | |
1789 | /* Indexed by R_TYPE, values are offsets in the howto_table. */ | |
1790 | static unsigned int offsets[R_AARCH64_end]; | |
1791 | ||
1792 | if (initialized_p == FALSE) | |
1793 | { | |
1794 | unsigned int i; | |
1795 | ||
1796 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) | |
1797 | if (elfNN_aarch64_howto_table[i].type != 0) | |
1798 | offsets[elfNN_aarch64_howto_table[i].type] = i; | |
1799 | ||
1800 | initialized_p = TRUE; | |
1801 | } | |
1802 | ||
1803 | if (r_type == R_AARCH64_NONE || r_type == R_AARCH64_NULL) | |
1804 | return BFD_RELOC_AARCH64_NONE; | |
1805 | ||
5860e3f8 NC |
1806 | /* PR 17512: file: b371e70a. */ |
1807 | if (r_type >= R_AARCH64_end) | |
1808 | { | |
1809 | _bfd_error_handler (_("Invalid AArch64 reloc number: %d"), r_type); | |
1810 | bfd_set_error (bfd_error_bad_value); | |
1811 | return BFD_RELOC_AARCH64_NONE; | |
1812 | } | |
1813 | ||
a6bb11b2 YZ |
1814 | return BFD_RELOC_AARCH64_RELOC_START + offsets[r_type]; |
1815 | } | |
1816 | ||
1817 | struct elf_aarch64_reloc_map | |
1818 | { | |
1819 | bfd_reloc_code_real_type from; | |
1820 | bfd_reloc_code_real_type to; | |
1821 | }; | |
1822 | ||
1823 | /* Map bfd generic reloc to AArch64-specific reloc. */ | |
1824 | static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map[] = | |
1825 | { | |
1826 | {BFD_RELOC_NONE, BFD_RELOC_AARCH64_NONE}, | |
1827 | ||
1828 | /* Basic data relocations. */ | |
1829 | {BFD_RELOC_CTOR, BFD_RELOC_AARCH64_NN}, | |
1830 | {BFD_RELOC_64, BFD_RELOC_AARCH64_64}, | |
1831 | {BFD_RELOC_32, BFD_RELOC_AARCH64_32}, | |
1832 | {BFD_RELOC_16, BFD_RELOC_AARCH64_16}, | |
1833 | {BFD_RELOC_64_PCREL, BFD_RELOC_AARCH64_64_PCREL}, | |
1834 | {BFD_RELOC_32_PCREL, BFD_RELOC_AARCH64_32_PCREL}, | |
1835 | {BFD_RELOC_16_PCREL, BFD_RELOC_AARCH64_16_PCREL}, | |
1836 | }; | |
1837 | ||
1838 | /* Given the bfd internal relocation enumerator in CODE, return the | |
1839 | corresponding howto entry. */ | |
1840 | ||
1841 | static reloc_howto_type * | |
1842 | elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code) | |
1843 | { | |
1844 | unsigned int i; | |
1845 | ||
1846 | /* Convert bfd generic reloc to AArch64-specific reloc. */ | |
1847 | if (code < BFD_RELOC_AARCH64_RELOC_START | |
1848 | || code > BFD_RELOC_AARCH64_RELOC_END) | |
1849 | for (i = 0; i < ARRAY_SIZE (elf_aarch64_reloc_map); i++) | |
1850 | if (elf_aarch64_reloc_map[i].from == code) | |
1851 | { | |
1852 | code = elf_aarch64_reloc_map[i].to; | |
1853 | break; | |
1854 | } | |
1855 | ||
1856 | if (code > BFD_RELOC_AARCH64_RELOC_START | |
1857 | && code < BFD_RELOC_AARCH64_RELOC_END) | |
1858 | if (elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START].type) | |
1859 | return &elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START]; | |
1860 | ||
54757ed1 AP |
1861 | if (code == BFD_RELOC_AARCH64_NONE) |
1862 | return &elfNN_aarch64_howto_none; | |
1863 | ||
a6bb11b2 YZ |
1864 | return NULL; |
1865 | } | |
1866 | ||
a06ea964 | 1867 | static reloc_howto_type * |
cec5225b | 1868 | elfNN_aarch64_howto_from_type (unsigned int r_type) |
a06ea964 | 1869 | { |
a6bb11b2 YZ |
1870 | bfd_reloc_code_real_type val; |
1871 | reloc_howto_type *howto; | |
1872 | ||
cec5225b YZ |
1873 | #if ARCH_SIZE == 32 |
1874 | if (r_type > 256) | |
1875 | { | |
1876 | bfd_set_error (bfd_error_bad_value); | |
1877 | return NULL; | |
1878 | } | |
1879 | #endif | |
1880 | ||
a6bb11b2 YZ |
1881 | if (r_type == R_AARCH64_NONE) |
1882 | return &elfNN_aarch64_howto_none; | |
a06ea964 | 1883 | |
a6bb11b2 YZ |
1884 | val = elfNN_aarch64_bfd_reloc_from_type (r_type); |
1885 | howto = elfNN_aarch64_howto_from_bfd_reloc (val); | |
a06ea964 | 1886 | |
a6bb11b2 YZ |
1887 | if (howto != NULL) |
1888 | return howto; | |
a06ea964 | 1889 | |
a06ea964 NC |
1890 | bfd_set_error (bfd_error_bad_value); |
1891 | return NULL; | |
1892 | } | |
1893 | ||
1894 | static void | |
cec5225b | 1895 | elfNN_aarch64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc, |
a06ea964 NC |
1896 | Elf_Internal_Rela *elf_reloc) |
1897 | { | |
1898 | unsigned int r_type; | |
1899 | ||
cec5225b YZ |
1900 | r_type = ELFNN_R_TYPE (elf_reloc->r_info); |
1901 | bfd_reloc->howto = elfNN_aarch64_howto_from_type (r_type); | |
a06ea964 NC |
1902 | } |
1903 | ||
a06ea964 | 1904 | static reloc_howto_type * |
cec5225b | 1905 | elfNN_aarch64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
1906 | bfd_reloc_code_real_type code) |
1907 | { | |
a6bb11b2 | 1908 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (code); |
a06ea964 | 1909 | |
a6bb11b2 YZ |
1910 | if (howto != NULL) |
1911 | return howto; | |
a06ea964 NC |
1912 | |
1913 | bfd_set_error (bfd_error_bad_value); | |
1914 | return NULL; | |
1915 | } | |
1916 | ||
1917 | static reloc_howto_type * | |
cec5225b | 1918 | elfNN_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
1919 | const char *r_name) |
1920 | { | |
1921 | unsigned int i; | |
1922 | ||
a6bb11b2 YZ |
1923 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) |
1924 | if (elfNN_aarch64_howto_table[i].name != NULL | |
1925 | && strcasecmp (elfNN_aarch64_howto_table[i].name, r_name) == 0) | |
1926 | return &elfNN_aarch64_howto_table[i]; | |
a06ea964 NC |
1927 | |
1928 | return NULL; | |
1929 | } | |
1930 | ||
6d00b590 | 1931 | #define TARGET_LITTLE_SYM aarch64_elfNN_le_vec |
cec5225b | 1932 | #define TARGET_LITTLE_NAME "elfNN-littleaarch64" |
6d00b590 | 1933 | #define TARGET_BIG_SYM aarch64_elfNN_be_vec |
cec5225b | 1934 | #define TARGET_BIG_NAME "elfNN-bigaarch64" |
a06ea964 | 1935 | |
a06ea964 NC |
1936 | /* The linker script knows the section names for placement. |
1937 | The entry_names are used to do simple name mangling on the stubs. | |
1938 | Given a function name, and its type, the stub can be found. The | |
1939 | name can be changed. The only requirement is the %s be present. */ | |
1940 | #define STUB_ENTRY_NAME "__%s_veneer" | |
1941 | ||
1942 | /* The name of the dynamic interpreter. This is put in the .interp | |
1943 | section. */ | |
1944 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
1945 | ||
1946 | #define AARCH64_MAX_FWD_BRANCH_OFFSET \ | |
1947 | (((1 << 25) - 1) << 2) | |
1948 | #define AARCH64_MAX_BWD_BRANCH_OFFSET \ | |
1949 | (-((1 << 25) << 2)) | |
1950 | ||
1951 | #define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1) | |
1952 | #define AARCH64_MIN_ADRP_IMM (-(1 << 20)) | |
1953 | ||
1954 | static int | |
1955 | aarch64_valid_for_adrp_p (bfd_vma value, bfd_vma place) | |
1956 | { | |
1957 | bfd_signed_vma offset = (bfd_signed_vma) (PG (value) - PG (place)) >> 12; | |
1958 | return offset <= AARCH64_MAX_ADRP_IMM && offset >= AARCH64_MIN_ADRP_IMM; | |
1959 | } | |
1960 | ||
1961 | static int | |
1962 | aarch64_valid_branch_p (bfd_vma value, bfd_vma place) | |
1963 | { | |
1964 | bfd_signed_vma offset = (bfd_signed_vma) (value - place); | |
1965 | return (offset <= AARCH64_MAX_FWD_BRANCH_OFFSET | |
1966 | && offset >= AARCH64_MAX_BWD_BRANCH_OFFSET); | |
1967 | } | |
1968 | ||
1969 | static const uint32_t aarch64_adrp_branch_stub [] = | |
1970 | { | |
1971 | 0x90000010, /* adrp ip0, X */ | |
1972 | /* R_AARCH64_ADR_HI21_PCREL(X) */ | |
1973 | 0x91000210, /* add ip0, ip0, :lo12:X */ | |
1974 | /* R_AARCH64_ADD_ABS_LO12_NC(X) */ | |
1975 | 0xd61f0200, /* br ip0 */ | |
1976 | }; | |
1977 | ||
1978 | static const uint32_t aarch64_long_branch_stub[] = | |
1979 | { | |
cec5225b | 1980 | #if ARCH_SIZE == 64 |
a06ea964 | 1981 | 0x58000090, /* ldr ip0, 1f */ |
cec5225b YZ |
1982 | #else |
1983 | 0x18000090, /* ldr wip0, 1f */ | |
1984 | #endif | |
a06ea964 NC |
1985 | 0x10000011, /* adr ip1, #0 */ |
1986 | 0x8b110210, /* add ip0, ip0, ip1 */ | |
1987 | 0xd61f0200, /* br ip0 */ | |
cec5225b YZ |
1988 | 0x00000000, /* 1: .xword or .word |
1989 | R_AARCH64_PRELNN(X) + 12 | |
a06ea964 NC |
1990 | */ |
1991 | 0x00000000, | |
1992 | }; | |
1993 | ||
68fcca92 JW |
1994 | static const uint32_t aarch64_erratum_835769_stub[] = |
1995 | { | |
1996 | 0x00000000, /* Placeholder for multiply accumulate. */ | |
1997 | 0x14000000, /* b <label> */ | |
1998 | }; | |
1999 | ||
4106101c MS |
2000 | static const uint32_t aarch64_erratum_843419_stub[] = |
2001 | { | |
2002 | 0x00000000, /* Placeholder for LDR instruction. */ | |
2003 | 0x14000000, /* b <label> */ | |
2004 | }; | |
2005 | ||
a06ea964 NC |
2006 | /* Section name for stubs is the associated section name plus this |
2007 | string. */ | |
2008 | #define STUB_SUFFIX ".stub" | |
2009 | ||
cec5225b | 2010 | enum elf_aarch64_stub_type |
a06ea964 NC |
2011 | { |
2012 | aarch64_stub_none, | |
2013 | aarch64_stub_adrp_branch, | |
2014 | aarch64_stub_long_branch, | |
68fcca92 | 2015 | aarch64_stub_erratum_835769_veneer, |
4106101c | 2016 | aarch64_stub_erratum_843419_veneer, |
a06ea964 NC |
2017 | }; |
2018 | ||
cec5225b | 2019 | struct elf_aarch64_stub_hash_entry |
a06ea964 NC |
2020 | { |
2021 | /* Base hash table entry structure. */ | |
2022 | struct bfd_hash_entry root; | |
2023 | ||
2024 | /* The stub section. */ | |
2025 | asection *stub_sec; | |
2026 | ||
2027 | /* Offset within stub_sec of the beginning of this stub. */ | |
2028 | bfd_vma stub_offset; | |
2029 | ||
2030 | /* Given the symbol's value and its section we can determine its final | |
2031 | value when building the stubs (so the stub knows where to jump). */ | |
2032 | bfd_vma target_value; | |
2033 | asection *target_section; | |
2034 | ||
cec5225b | 2035 | enum elf_aarch64_stub_type stub_type; |
a06ea964 NC |
2036 | |
2037 | /* The symbol table entry, if any, that this was derived from. */ | |
cec5225b | 2038 | struct elf_aarch64_link_hash_entry *h; |
a06ea964 NC |
2039 | |
2040 | /* Destination symbol type */ | |
2041 | unsigned char st_type; | |
2042 | ||
2043 | /* Where this stub is being called from, or, in the case of combined | |
2044 | stub sections, the first input section in the group. */ | |
2045 | asection *id_sec; | |
2046 | ||
2047 | /* The name for the local symbol at the start of this stub. The | |
2048 | stub name in the hash table has to be unique; this does not, so | |
2049 | it can be friendlier. */ | |
2050 | char *output_name; | |
68fcca92 JW |
2051 | |
2052 | /* The instruction which caused this stub to be generated (only valid for | |
2053 | erratum 835769 workaround stubs at present). */ | |
2054 | uint32_t veneered_insn; | |
4106101c MS |
2055 | |
2056 | /* In an erratum 843419 workaround stub, the ADRP instruction offset. */ | |
2057 | bfd_vma adrp_offset; | |
a06ea964 NC |
2058 | }; |
2059 | ||
2060 | /* Used to build a map of a section. This is required for mixed-endian | |
2061 | code/data. */ | |
2062 | ||
cec5225b | 2063 | typedef struct elf_elf_section_map |
a06ea964 NC |
2064 | { |
2065 | bfd_vma vma; | |
2066 | char type; | |
2067 | } | |
cec5225b | 2068 | elf_aarch64_section_map; |
a06ea964 NC |
2069 | |
2070 | ||
2071 | typedef struct _aarch64_elf_section_data | |
2072 | { | |
2073 | struct bfd_elf_section_data elf; | |
2074 | unsigned int mapcount; | |
2075 | unsigned int mapsize; | |
cec5225b | 2076 | elf_aarch64_section_map *map; |
a06ea964 NC |
2077 | } |
2078 | _aarch64_elf_section_data; | |
2079 | ||
cec5225b | 2080 | #define elf_aarch64_section_data(sec) \ |
a06ea964 NC |
2081 | ((_aarch64_elf_section_data *) elf_section_data (sec)) |
2082 | ||
4e8516b2 AP |
2083 | /* The size of the thread control block which is defined to be two pointers. */ |
2084 | #define TCB_SIZE (ARCH_SIZE/8)*2 | |
a06ea964 NC |
2085 | |
2086 | struct elf_aarch64_local_symbol | |
2087 | { | |
2088 | unsigned int got_type; | |
2089 | bfd_signed_vma got_refcount; | |
2090 | bfd_vma got_offset; | |
2091 | ||
2092 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The | |
2093 | offset is from the end of the jump table and reserved entries | |
2094 | within the PLTGOT. | |
2095 | ||
2096 | The magic value (bfd_vma) -1 indicates that an offset has not be | |
2097 | allocated. */ | |
2098 | bfd_vma tlsdesc_got_jump_table_offset; | |
2099 | }; | |
2100 | ||
2101 | struct elf_aarch64_obj_tdata | |
2102 | { | |
2103 | struct elf_obj_tdata root; | |
2104 | ||
2105 | /* local symbol descriptors */ | |
2106 | struct elf_aarch64_local_symbol *locals; | |
2107 | ||
2108 | /* Zero to warn when linking objects with incompatible enum sizes. */ | |
2109 | int no_enum_size_warning; | |
2110 | ||
2111 | /* Zero to warn when linking objects with incompatible wchar_t sizes. */ | |
2112 | int no_wchar_size_warning; | |
2113 | }; | |
2114 | ||
2115 | #define elf_aarch64_tdata(bfd) \ | |
2116 | ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any) | |
2117 | ||
cec5225b | 2118 | #define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals) |
a06ea964 NC |
2119 | |
2120 | #define is_aarch64_elf(bfd) \ | |
2121 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
2122 | && elf_tdata (bfd) != NULL \ | |
2123 | && elf_object_id (bfd) == AARCH64_ELF_DATA) | |
2124 | ||
2125 | static bfd_boolean | |
cec5225b | 2126 | elfNN_aarch64_mkobject (bfd *abfd) |
a06ea964 NC |
2127 | { |
2128 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_aarch64_obj_tdata), | |
2129 | AARCH64_ELF_DATA); | |
2130 | } | |
2131 | ||
cec5225b YZ |
2132 | #define elf_aarch64_hash_entry(ent) \ |
2133 | ((struct elf_aarch64_link_hash_entry *)(ent)) | |
a06ea964 NC |
2134 | |
2135 | #define GOT_UNKNOWN 0 | |
2136 | #define GOT_NORMAL 1 | |
2137 | #define GOT_TLS_GD 2 | |
2138 | #define GOT_TLS_IE 4 | |
2139 | #define GOT_TLSDESC_GD 8 | |
2140 | ||
2141 | #define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD)) | |
2142 | ||
2143 | /* AArch64 ELF linker hash entry. */ | |
cec5225b | 2144 | struct elf_aarch64_link_hash_entry |
a06ea964 NC |
2145 | { |
2146 | struct elf_link_hash_entry root; | |
2147 | ||
2148 | /* Track dynamic relocs copied for this symbol. */ | |
2149 | struct elf_dyn_relocs *dyn_relocs; | |
2150 | ||
a06ea964 NC |
2151 | /* Since PLT entries have variable size, we need to record the |
2152 | index into .got.plt instead of recomputing it from the PLT | |
2153 | offset. */ | |
2154 | bfd_signed_vma plt_got_offset; | |
2155 | ||
2156 | /* Bit mask representing the type of GOT entry(s) if any required by | |
2157 | this symbol. */ | |
2158 | unsigned int got_type; | |
2159 | ||
2160 | /* A pointer to the most recently used stub hash entry against this | |
2161 | symbol. */ | |
cec5225b | 2162 | struct elf_aarch64_stub_hash_entry *stub_cache; |
a06ea964 NC |
2163 | |
2164 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset | |
2165 | is from the end of the jump table and reserved entries within the PLTGOT. | |
2166 | ||
2167 | The magic value (bfd_vma) -1 indicates that an offset has not | |
2168 | be allocated. */ | |
2169 | bfd_vma tlsdesc_got_jump_table_offset; | |
2170 | }; | |
2171 | ||
2172 | static unsigned int | |
cec5225b | 2173 | elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry *h, |
a06ea964 NC |
2174 | bfd *abfd, |
2175 | unsigned long r_symndx) | |
2176 | { | |
2177 | if (h) | |
cec5225b | 2178 | return elf_aarch64_hash_entry (h)->got_type; |
a06ea964 | 2179 | |
cec5225b | 2180 | if (! elf_aarch64_locals (abfd)) |
a06ea964 NC |
2181 | return GOT_UNKNOWN; |
2182 | ||
cec5225b | 2183 | return elf_aarch64_locals (abfd)[r_symndx].got_type; |
a06ea964 NC |
2184 | } |
2185 | ||
a06ea964 | 2186 | /* Get the AArch64 elf linker hash table from a link_info structure. */ |
cec5225b YZ |
2187 | #define elf_aarch64_hash_table(info) \ |
2188 | ((struct elf_aarch64_link_hash_table *) ((info)->hash)) | |
a06ea964 NC |
2189 | |
2190 | #define aarch64_stub_hash_lookup(table, string, create, copy) \ | |
cec5225b | 2191 | ((struct elf_aarch64_stub_hash_entry *) \ |
a06ea964 NC |
2192 | bfd_hash_lookup ((table), (string), (create), (copy))) |
2193 | ||
2194 | /* AArch64 ELF linker hash table. */ | |
cec5225b | 2195 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
2196 | { |
2197 | /* The main hash table. */ | |
2198 | struct elf_link_hash_table root; | |
2199 | ||
2200 | /* Nonzero to force PIC branch veneers. */ | |
2201 | int pic_veneer; | |
2202 | ||
68fcca92 JW |
2203 | /* Fix erratum 835769. */ |
2204 | int fix_erratum_835769; | |
2205 | ||
4106101c MS |
2206 | /* Fix erratum 843419. */ |
2207 | int fix_erratum_843419; | |
2208 | ||
2209 | /* Enable ADRP->ADR rewrite for erratum 843419 workaround. */ | |
2210 | int fix_erratum_843419_adr; | |
2211 | ||
a06ea964 NC |
2212 | /* The number of bytes in the initial entry in the PLT. */ |
2213 | bfd_size_type plt_header_size; | |
2214 | ||
2215 | /* The number of bytes in the subsequent PLT etries. */ | |
2216 | bfd_size_type plt_entry_size; | |
2217 | ||
2218 | /* Short-cuts to get to dynamic linker sections. */ | |
2219 | asection *sdynbss; | |
2220 | asection *srelbss; | |
2221 | ||
2222 | /* Small local sym cache. */ | |
2223 | struct sym_cache sym_cache; | |
2224 | ||
2225 | /* For convenience in allocate_dynrelocs. */ | |
2226 | bfd *obfd; | |
2227 | ||
2228 | /* The amount of space used by the reserved portion of the sgotplt | |
2229 | section, plus whatever space is used by the jump slots. */ | |
2230 | bfd_vma sgotplt_jump_table_size; | |
2231 | ||
2232 | /* The stub hash table. */ | |
2233 | struct bfd_hash_table stub_hash_table; | |
2234 | ||
2235 | /* Linker stub bfd. */ | |
2236 | bfd *stub_bfd; | |
2237 | ||
2238 | /* Linker call-backs. */ | |
2239 | asection *(*add_stub_section) (const char *, asection *); | |
2240 | void (*layout_sections_again) (void); | |
2241 | ||
2242 | /* Array to keep track of which stub sections have been created, and | |
2243 | information on stub grouping. */ | |
2244 | struct map_stub | |
2245 | { | |
2246 | /* This is the section to which stubs in the group will be | |
2247 | attached. */ | |
2248 | asection *link_sec; | |
2249 | /* The stub section. */ | |
2250 | asection *stub_sec; | |
2251 | } *stub_group; | |
2252 | ||
cec5225b | 2253 | /* Assorted information used by elfNN_aarch64_size_stubs. */ |
a06ea964 NC |
2254 | unsigned int bfd_count; |
2255 | int top_index; | |
2256 | asection **input_list; | |
2257 | ||
2258 | /* The offset into splt of the PLT entry for the TLS descriptor | |
2259 | resolver. Special values are 0, if not necessary (or not found | |
2260 | to be necessary yet), and -1 if needed but not determined | |
2261 | yet. */ | |
2262 | bfd_vma tlsdesc_plt; | |
2263 | ||
2264 | /* The GOT offset for the lazy trampoline. Communicated to the | |
2265 | loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1 | |
2266 | indicates an offset is not allocated. */ | |
2267 | bfd_vma dt_tlsdesc_got; | |
1419bbe5 WN |
2268 | |
2269 | /* Used by local STT_GNU_IFUNC symbols. */ | |
2270 | htab_t loc_hash_table; | |
2271 | void * loc_hash_memory; | |
a06ea964 NC |
2272 | }; |
2273 | ||
a06ea964 NC |
2274 | /* Create an entry in an AArch64 ELF linker hash table. */ |
2275 | ||
2276 | static struct bfd_hash_entry * | |
cec5225b | 2277 | elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry, |
a06ea964 NC |
2278 | struct bfd_hash_table *table, |
2279 | const char *string) | |
2280 | { | |
cec5225b YZ |
2281 | struct elf_aarch64_link_hash_entry *ret = |
2282 | (struct elf_aarch64_link_hash_entry *) entry; | |
a06ea964 NC |
2283 | |
2284 | /* Allocate the structure if it has not already been allocated by a | |
2285 | subclass. */ | |
2286 | if (ret == NULL) | |
2287 | ret = bfd_hash_allocate (table, | |
cec5225b | 2288 | sizeof (struct elf_aarch64_link_hash_entry)); |
a06ea964 NC |
2289 | if (ret == NULL) |
2290 | return (struct bfd_hash_entry *) ret; | |
2291 | ||
2292 | /* Call the allocation method of the superclass. */ | |
cec5225b | 2293 | ret = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
2294 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
2295 | table, string)); | |
2296 | if (ret != NULL) | |
2297 | { | |
2298 | ret->dyn_relocs = NULL; | |
a06ea964 NC |
2299 | ret->got_type = GOT_UNKNOWN; |
2300 | ret->plt_got_offset = (bfd_vma) - 1; | |
2301 | ret->stub_cache = NULL; | |
2302 | ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
2303 | } | |
2304 | ||
2305 | return (struct bfd_hash_entry *) ret; | |
2306 | } | |
2307 | ||
2308 | /* Initialize an entry in the stub hash table. */ | |
2309 | ||
2310 | static struct bfd_hash_entry * | |
2311 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
2312 | struct bfd_hash_table *table, const char *string) | |
2313 | { | |
2314 | /* Allocate the structure if it has not already been allocated by a | |
2315 | subclass. */ | |
2316 | if (entry == NULL) | |
2317 | { | |
2318 | entry = bfd_hash_allocate (table, | |
2319 | sizeof (struct | |
cec5225b | 2320 | elf_aarch64_stub_hash_entry)); |
a06ea964 NC |
2321 | if (entry == NULL) |
2322 | return entry; | |
2323 | } | |
2324 | ||
2325 | /* Call the allocation method of the superclass. */ | |
2326 | entry = bfd_hash_newfunc (entry, table, string); | |
2327 | if (entry != NULL) | |
2328 | { | |
cec5225b | 2329 | struct elf_aarch64_stub_hash_entry *eh; |
a06ea964 NC |
2330 | |
2331 | /* Initialize the local fields. */ | |
cec5225b | 2332 | eh = (struct elf_aarch64_stub_hash_entry *) entry; |
4106101c | 2333 | eh->adrp_offset = 0; |
a06ea964 NC |
2334 | eh->stub_sec = NULL; |
2335 | eh->stub_offset = 0; | |
2336 | eh->target_value = 0; | |
2337 | eh->target_section = NULL; | |
2338 | eh->stub_type = aarch64_stub_none; | |
2339 | eh->h = NULL; | |
2340 | eh->id_sec = NULL; | |
2341 | } | |
2342 | ||
2343 | return entry; | |
2344 | } | |
2345 | ||
1419bbe5 WN |
2346 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry |
2347 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
2348 | as global symbol. We reuse indx and dynstr_index for local symbol | |
2349 | hash since they aren't used by global symbols in this backend. */ | |
2350 | ||
2351 | static hashval_t | |
2352 | elfNN_aarch64_local_htab_hash (const void *ptr) | |
2353 | { | |
2354 | struct elf_link_hash_entry *h | |
2355 | = (struct elf_link_hash_entry *) ptr; | |
2356 | return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); | |
2357 | } | |
2358 | ||
2359 | /* Compare local hash entries. */ | |
2360 | ||
2361 | static int | |
2362 | elfNN_aarch64_local_htab_eq (const void *ptr1, const void *ptr2) | |
2363 | { | |
2364 | struct elf_link_hash_entry *h1 | |
2365 | = (struct elf_link_hash_entry *) ptr1; | |
2366 | struct elf_link_hash_entry *h2 | |
2367 | = (struct elf_link_hash_entry *) ptr2; | |
2368 | ||
2369 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
2370 | } | |
2371 | ||
2372 | /* Find and/or create a hash entry for local symbol. */ | |
2373 | ||
2374 | static struct elf_link_hash_entry * | |
2375 | elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table *htab, | |
2376 | bfd *abfd, const Elf_Internal_Rela *rel, | |
2377 | bfd_boolean create) | |
2378 | { | |
2379 | struct elf_aarch64_link_hash_entry e, *ret; | |
2380 | asection *sec = abfd->sections; | |
2381 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, | |
2382 | ELFNN_R_SYM (rel->r_info)); | |
2383 | void **slot; | |
2384 | ||
2385 | e.root.indx = sec->id; | |
2386 | e.root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2387 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, | |
2388 | create ? INSERT : NO_INSERT); | |
2389 | ||
2390 | if (!slot) | |
2391 | return NULL; | |
2392 | ||
2393 | if (*slot) | |
2394 | { | |
2395 | ret = (struct elf_aarch64_link_hash_entry *) *slot; | |
2396 | return &ret->root; | |
2397 | } | |
2398 | ||
2399 | ret = (struct elf_aarch64_link_hash_entry *) | |
2400 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, | |
2401 | sizeof (struct elf_aarch64_link_hash_entry)); | |
2402 | if (ret) | |
2403 | { | |
2404 | memset (ret, 0, sizeof (*ret)); | |
2405 | ret->root.indx = sec->id; | |
2406 | ret->root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2407 | ret->root.dynindx = -1; | |
2408 | *slot = ret; | |
2409 | } | |
2410 | return &ret->root; | |
2411 | } | |
a06ea964 NC |
2412 | |
2413 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
2414 | ||
2415 | static void | |
cec5225b | 2416 | elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info, |
a06ea964 NC |
2417 | struct elf_link_hash_entry *dir, |
2418 | struct elf_link_hash_entry *ind) | |
2419 | { | |
cec5225b | 2420 | struct elf_aarch64_link_hash_entry *edir, *eind; |
a06ea964 | 2421 | |
cec5225b YZ |
2422 | edir = (struct elf_aarch64_link_hash_entry *) dir; |
2423 | eind = (struct elf_aarch64_link_hash_entry *) ind; | |
a06ea964 NC |
2424 | |
2425 | if (eind->dyn_relocs != NULL) | |
2426 | { | |
2427 | if (edir->dyn_relocs != NULL) | |
2428 | { | |
2429 | struct elf_dyn_relocs **pp; | |
2430 | struct elf_dyn_relocs *p; | |
2431 | ||
2432 | /* Add reloc counts against the indirect sym to the direct sym | |
2433 | list. Merge any entries against the same section. */ | |
2434 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) | |
2435 | { | |
2436 | struct elf_dyn_relocs *q; | |
2437 | ||
2438 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
2439 | if (q->sec == p->sec) | |
2440 | { | |
2441 | q->pc_count += p->pc_count; | |
2442 | q->count += p->count; | |
2443 | *pp = p->next; | |
2444 | break; | |
2445 | } | |
2446 | if (q == NULL) | |
2447 | pp = &p->next; | |
2448 | } | |
2449 | *pp = edir->dyn_relocs; | |
2450 | } | |
2451 | ||
2452 | edir->dyn_relocs = eind->dyn_relocs; | |
2453 | eind->dyn_relocs = NULL; | |
2454 | } | |
2455 | ||
a06ea964 NC |
2456 | if (ind->root.type == bfd_link_hash_indirect) |
2457 | { | |
2458 | /* Copy over PLT info. */ | |
2459 | if (dir->got.refcount <= 0) | |
2460 | { | |
2461 | edir->got_type = eind->got_type; | |
2462 | eind->got_type = GOT_UNKNOWN; | |
2463 | } | |
2464 | } | |
2465 | ||
2466 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
2467 | } | |
2468 | ||
68faa637 AM |
2469 | /* Destroy an AArch64 elf linker hash table. */ |
2470 | ||
2471 | static void | |
d495ab0d | 2472 | elfNN_aarch64_link_hash_table_free (bfd *obfd) |
68faa637 AM |
2473 | { |
2474 | struct elf_aarch64_link_hash_table *ret | |
d495ab0d | 2475 | = (struct elf_aarch64_link_hash_table *) obfd->link.hash; |
68faa637 AM |
2476 | |
2477 | if (ret->loc_hash_table) | |
2478 | htab_delete (ret->loc_hash_table); | |
2479 | if (ret->loc_hash_memory) | |
2480 | objalloc_free ((struct objalloc *) ret->loc_hash_memory); | |
2481 | ||
2482 | bfd_hash_table_free (&ret->stub_hash_table); | |
d495ab0d | 2483 | _bfd_elf_link_hash_table_free (obfd); |
68faa637 AM |
2484 | } |
2485 | ||
a06ea964 NC |
2486 | /* Create an AArch64 elf linker hash table. */ |
2487 | ||
2488 | static struct bfd_link_hash_table * | |
cec5225b | 2489 | elfNN_aarch64_link_hash_table_create (bfd *abfd) |
a06ea964 | 2490 | { |
cec5225b YZ |
2491 | struct elf_aarch64_link_hash_table *ret; |
2492 | bfd_size_type amt = sizeof (struct elf_aarch64_link_hash_table); | |
a06ea964 | 2493 | |
7bf52ea2 | 2494 | ret = bfd_zmalloc (amt); |
a06ea964 NC |
2495 | if (ret == NULL) |
2496 | return NULL; | |
2497 | ||
2498 | if (!_bfd_elf_link_hash_table_init | |
cec5225b YZ |
2499 | (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc, |
2500 | sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA)) | |
a06ea964 NC |
2501 | { |
2502 | free (ret); | |
2503 | return NULL; | |
2504 | } | |
2505 | ||
a06ea964 NC |
2506 | ret->plt_header_size = PLT_ENTRY_SIZE; |
2507 | ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE; | |
a06ea964 | 2508 | ret->obfd = abfd; |
a06ea964 NC |
2509 | ret->dt_tlsdesc_got = (bfd_vma) - 1; |
2510 | ||
2511 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc, | |
cec5225b | 2512 | sizeof (struct elf_aarch64_stub_hash_entry))) |
a06ea964 | 2513 | { |
d495ab0d | 2514 | _bfd_elf_link_hash_table_free (abfd); |
a06ea964 NC |
2515 | return NULL; |
2516 | } | |
2517 | ||
1419bbe5 WN |
2518 | ret->loc_hash_table = htab_try_create (1024, |
2519 | elfNN_aarch64_local_htab_hash, | |
2520 | elfNN_aarch64_local_htab_eq, | |
2521 | NULL); | |
2522 | ret->loc_hash_memory = objalloc_create (); | |
2523 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
2524 | { | |
d495ab0d | 2525 | elfNN_aarch64_link_hash_table_free (abfd); |
1419bbe5 WN |
2526 | return NULL; |
2527 | } | |
d495ab0d | 2528 | ret->root.root.hash_table_free = elfNN_aarch64_link_hash_table_free; |
1419bbe5 | 2529 | |
a06ea964 NC |
2530 | return &ret->root.root; |
2531 | } | |
2532 | ||
a06ea964 NC |
2533 | static bfd_boolean |
2534 | aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section, | |
2535 | bfd_vma offset, bfd_vma value) | |
2536 | { | |
2537 | reloc_howto_type *howto; | |
2538 | bfd_vma place; | |
2539 | ||
cec5225b | 2540 | howto = elfNN_aarch64_howto_from_type (r_type); |
a06ea964 NC |
2541 | place = (input_section->output_section->vma + input_section->output_offset |
2542 | + offset); | |
caed7120 YZ |
2543 | |
2544 | r_type = elfNN_aarch64_bfd_reloc_from_type (r_type); | |
2545 | value = _bfd_aarch64_elf_resolve_relocation (r_type, place, value, 0, FALSE); | |
2546 | return _bfd_aarch64_elf_put_addend (input_bfd, | |
2547 | input_section->contents + offset, r_type, | |
2548 | howto, value); | |
a06ea964 NC |
2549 | } |
2550 | ||
cec5225b | 2551 | static enum elf_aarch64_stub_type |
a06ea964 NC |
2552 | aarch64_select_branch_stub (bfd_vma value, bfd_vma place) |
2553 | { | |
2554 | if (aarch64_valid_for_adrp_p (value, place)) | |
2555 | return aarch64_stub_adrp_branch; | |
2556 | return aarch64_stub_long_branch; | |
2557 | } | |
2558 | ||
2559 | /* Determine the type of stub needed, if any, for a call. */ | |
2560 | ||
cec5225b | 2561 | static enum elf_aarch64_stub_type |
a06ea964 NC |
2562 | aarch64_type_of_stub (struct bfd_link_info *info, |
2563 | asection *input_sec, | |
2564 | const Elf_Internal_Rela *rel, | |
f678ded7 | 2565 | asection *sym_sec, |
a06ea964 | 2566 | unsigned char st_type, |
cec5225b | 2567 | struct elf_aarch64_link_hash_entry *hash, |
a06ea964 NC |
2568 | bfd_vma destination) |
2569 | { | |
2570 | bfd_vma location; | |
2571 | bfd_signed_vma branch_offset; | |
2572 | unsigned int r_type; | |
cec5225b YZ |
2573 | struct elf_aarch64_link_hash_table *globals; |
2574 | enum elf_aarch64_stub_type stub_type = aarch64_stub_none; | |
a06ea964 NC |
2575 | bfd_boolean via_plt_p; |
2576 | ||
f678ded7 JW |
2577 | if (st_type != STT_FUNC |
2578 | && (sym_sec != bfd_abs_section_ptr)) | |
a06ea964 NC |
2579 | return stub_type; |
2580 | ||
cec5225b | 2581 | globals = elf_aarch64_hash_table (info); |
a06ea964 NC |
2582 | via_plt_p = (globals->root.splt != NULL && hash != NULL |
2583 | && hash->root.plt.offset != (bfd_vma) - 1); | |
07f9ddfe | 2584 | /* Make sure call to plt stub can fit into the branch range. */ |
a06ea964 | 2585 | if (via_plt_p) |
07f9ddfe JW |
2586 | destination = (globals->root.splt->output_section->vma |
2587 | + globals->root.splt->output_offset | |
2588 | + hash->root.plt.offset); | |
a06ea964 NC |
2589 | |
2590 | /* Determine where the call point is. */ | |
2591 | location = (input_sec->output_offset | |
2592 | + input_sec->output_section->vma + rel->r_offset); | |
2593 | ||
2594 | branch_offset = (bfd_signed_vma) (destination - location); | |
2595 | ||
cec5225b | 2596 | r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
2597 | |
2598 | /* We don't want to redirect any old unconditional jump in this way, | |
2599 | only one which is being used for a sibcall, where it is | |
2600 | acceptable for the IP0 and IP1 registers to be clobbered. */ | |
a6bb11b2 | 2601 | if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26)) |
a06ea964 NC |
2602 | && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET |
2603 | || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET)) | |
2604 | { | |
2605 | stub_type = aarch64_stub_long_branch; | |
2606 | } | |
2607 | ||
2608 | return stub_type; | |
2609 | } | |
2610 | ||
2611 | /* Build a name for an entry in the stub hash table. */ | |
2612 | ||
2613 | static char * | |
cec5225b | 2614 | elfNN_aarch64_stub_name (const asection *input_section, |
a06ea964 | 2615 | const asection *sym_sec, |
cec5225b | 2616 | const struct elf_aarch64_link_hash_entry *hash, |
a06ea964 NC |
2617 | const Elf_Internal_Rela *rel) |
2618 | { | |
2619 | char *stub_name; | |
2620 | bfd_size_type len; | |
2621 | ||
2622 | if (hash) | |
2623 | { | |
2624 | len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1; | |
2625 | stub_name = bfd_malloc (len); | |
2626 | if (stub_name != NULL) | |
2627 | snprintf (stub_name, len, "%08x_%s+%" BFD_VMA_FMT "x", | |
2628 | (unsigned int) input_section->id, | |
2629 | hash->root.root.root.string, | |
2630 | rel->r_addend); | |
2631 | } | |
2632 | else | |
2633 | { | |
2634 | len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1; | |
2635 | stub_name = bfd_malloc (len); | |
2636 | if (stub_name != NULL) | |
2637 | snprintf (stub_name, len, "%08x_%x:%x+%" BFD_VMA_FMT "x", | |
2638 | (unsigned int) input_section->id, | |
2639 | (unsigned int) sym_sec->id, | |
cec5225b | 2640 | (unsigned int) ELFNN_R_SYM (rel->r_info), |
a06ea964 NC |
2641 | rel->r_addend); |
2642 | } | |
2643 | ||
2644 | return stub_name; | |
2645 | } | |
2646 | ||
2647 | /* Look up an entry in the stub hash. Stub entries are cached because | |
2648 | creating the stub name takes a bit of time. */ | |
2649 | ||
cec5225b YZ |
2650 | static struct elf_aarch64_stub_hash_entry * |
2651 | elfNN_aarch64_get_stub_entry (const asection *input_section, | |
a06ea964 NC |
2652 | const asection *sym_sec, |
2653 | struct elf_link_hash_entry *hash, | |
2654 | const Elf_Internal_Rela *rel, | |
cec5225b | 2655 | struct elf_aarch64_link_hash_table *htab) |
a06ea964 | 2656 | { |
cec5225b YZ |
2657 | struct elf_aarch64_stub_hash_entry *stub_entry; |
2658 | struct elf_aarch64_link_hash_entry *h = | |
2659 | (struct elf_aarch64_link_hash_entry *) hash; | |
a06ea964 NC |
2660 | const asection *id_sec; |
2661 | ||
2662 | if ((input_section->flags & SEC_CODE) == 0) | |
2663 | return NULL; | |
2664 | ||
2665 | /* If this input section is part of a group of sections sharing one | |
2666 | stub section, then use the id of the first section in the group. | |
2667 | Stub names need to include a section id, as there may well be | |
2668 | more than one stub used to reach say, printf, and we need to | |
2669 | distinguish between them. */ | |
2670 | id_sec = htab->stub_group[input_section->id].link_sec; | |
2671 | ||
2672 | if (h != NULL && h->stub_cache != NULL | |
2673 | && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec) | |
2674 | { | |
2675 | stub_entry = h->stub_cache; | |
2676 | } | |
2677 | else | |
2678 | { | |
2679 | char *stub_name; | |
2680 | ||
cec5225b | 2681 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel); |
a06ea964 NC |
2682 | if (stub_name == NULL) |
2683 | return NULL; | |
2684 | ||
2685 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
2686 | stub_name, FALSE, FALSE); | |
2687 | if (h != NULL) | |
2688 | h->stub_cache = stub_entry; | |
2689 | ||
2690 | free (stub_name); | |
2691 | } | |
2692 | ||
2693 | return stub_entry; | |
2694 | } | |
2695 | ||
a06ea964 | 2696 | |
66585675 MS |
2697 | /* Create a stub section. */ |
2698 | ||
2699 | static asection * | |
2700 | _bfd_aarch64_create_stub_section (asection *section, | |
2701 | struct elf_aarch64_link_hash_table *htab) | |
2702 | { | |
2703 | size_t namelen; | |
2704 | bfd_size_type len; | |
2705 | char *s_name; | |
2706 | ||
2707 | namelen = strlen (section->name); | |
2708 | len = namelen + sizeof (STUB_SUFFIX); | |
2709 | s_name = bfd_alloc (htab->stub_bfd, len); | |
2710 | if (s_name == NULL) | |
2711 | return NULL; | |
2712 | ||
2713 | memcpy (s_name, section->name, namelen); | |
2714 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
2715 | return (*htab->add_stub_section) (s_name, section); | |
2716 | } | |
2717 | ||
2718 | ||
fc6d53be MS |
2719 | /* Find or create a stub section for a link section. |
2720 | ||
2721 | Fix or create the stub section used to collect stubs attached to | |
2722 | the specified link section. */ | |
2723 | ||
2724 | static asection * | |
2725 | _bfd_aarch64_get_stub_for_link_section (asection *link_section, | |
2726 | struct elf_aarch64_link_hash_table *htab) | |
2727 | { | |
2728 | if (htab->stub_group[link_section->id].stub_sec == NULL) | |
2729 | htab->stub_group[link_section->id].stub_sec | |
2730 | = _bfd_aarch64_create_stub_section (link_section, htab); | |
2731 | return htab->stub_group[link_section->id].stub_sec; | |
2732 | } | |
2733 | ||
2734 | ||
ef857521 MS |
2735 | /* Find or create a stub section in the stub group for an input |
2736 | section. */ | |
2737 | ||
2738 | static asection * | |
2739 | _bfd_aarch64_create_or_find_stub_sec (asection *section, | |
2740 | struct elf_aarch64_link_hash_table *htab) | |
a06ea964 | 2741 | { |
fc6d53be MS |
2742 | asection *link_sec = htab->stub_group[section->id].link_sec; |
2743 | return _bfd_aarch64_get_stub_for_link_section (link_sec, htab); | |
ef857521 MS |
2744 | } |
2745 | ||
2746 | ||
2747 | /* Add a new stub entry in the stub group associated with an input | |
2748 | section to the stub hash. Not all fields of the new stub entry are | |
2749 | initialised. */ | |
2750 | ||
2751 | static struct elf_aarch64_stub_hash_entry * | |
2752 | _bfd_aarch64_add_stub_entry_in_group (const char *stub_name, | |
2753 | asection *section, | |
2754 | struct elf_aarch64_link_hash_table *htab) | |
2755 | { | |
2756 | asection *link_sec; | |
2757 | asection *stub_sec; | |
2758 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
2759 | ||
2760 | link_sec = htab->stub_group[section->id].link_sec; | |
2761 | stub_sec = _bfd_aarch64_create_or_find_stub_sec (section, htab); | |
2762 | ||
a06ea964 NC |
2763 | /* Enter this entry into the linker stub hash table. */ |
2764 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
2765 | TRUE, FALSE); | |
2766 | if (stub_entry == NULL) | |
2767 | { | |
2768 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), | |
2769 | section->owner, stub_name); | |
2770 | return NULL; | |
2771 | } | |
2772 | ||
2773 | stub_entry->stub_sec = stub_sec; | |
2774 | stub_entry->stub_offset = 0; | |
2775 | stub_entry->id_sec = link_sec; | |
2776 | ||
2777 | return stub_entry; | |
2778 | } | |
2779 | ||
4106101c MS |
2780 | /* Add a new stub entry in the final stub section to the stub hash. |
2781 | Not all fields of the new stub entry are initialised. */ | |
2782 | ||
2783 | static struct elf_aarch64_stub_hash_entry * | |
2784 | _bfd_aarch64_add_stub_entry_after (const char *stub_name, | |
2785 | asection *link_section, | |
2786 | struct elf_aarch64_link_hash_table *htab) | |
2787 | { | |
2788 | asection *stub_sec; | |
2789 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
2790 | ||
2791 | stub_sec = _bfd_aarch64_get_stub_for_link_section (link_section, htab); | |
2792 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
2793 | TRUE, FALSE); | |
2794 | if (stub_entry == NULL) | |
2795 | { | |
2796 | (*_bfd_error_handler) (_("cannot create stub entry %s"), stub_name); | |
2797 | return NULL; | |
2798 | } | |
2799 | ||
2800 | stub_entry->stub_sec = stub_sec; | |
2801 | stub_entry->stub_offset = 0; | |
2802 | stub_entry->id_sec = link_section; | |
2803 | ||
2804 | return stub_entry; | |
2805 | } | |
2806 | ||
2807 | ||
a06ea964 NC |
2808 | static bfd_boolean |
2809 | aarch64_build_one_stub (struct bfd_hash_entry *gen_entry, | |
2810 | void *in_arg ATTRIBUTE_UNUSED) | |
2811 | { | |
cec5225b | 2812 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
2813 | asection *stub_sec; |
2814 | bfd *stub_bfd; | |
2815 | bfd_byte *loc; | |
2816 | bfd_vma sym_value; | |
68fcca92 JW |
2817 | bfd_vma veneered_insn_loc; |
2818 | bfd_vma veneer_entry_loc; | |
2819 | bfd_signed_vma branch_offset = 0; | |
a06ea964 NC |
2820 | unsigned int template_size; |
2821 | const uint32_t *template; | |
2822 | unsigned int i; | |
2823 | ||
2824 | /* Massage our args to the form they really have. */ | |
cec5225b | 2825 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
2826 | |
2827 | stub_sec = stub_entry->stub_sec; | |
2828 | ||
2829 | /* Make a note of the offset within the stubs for this entry. */ | |
2830 | stub_entry->stub_offset = stub_sec->size; | |
2831 | loc = stub_sec->contents + stub_entry->stub_offset; | |
2832 | ||
2833 | stub_bfd = stub_sec->owner; | |
2834 | ||
2835 | /* This is the address of the stub destination. */ | |
2836 | sym_value = (stub_entry->target_value | |
2837 | + stub_entry->target_section->output_offset | |
2838 | + stub_entry->target_section->output_section->vma); | |
2839 | ||
2840 | if (stub_entry->stub_type == aarch64_stub_long_branch) | |
2841 | { | |
2842 | bfd_vma place = (stub_entry->stub_offset + stub_sec->output_section->vma | |
2843 | + stub_sec->output_offset); | |
2844 | ||
2845 | /* See if we can relax the stub. */ | |
2846 | if (aarch64_valid_for_adrp_p (sym_value, place)) | |
2847 | stub_entry->stub_type = aarch64_select_branch_stub (sym_value, place); | |
2848 | } | |
2849 | ||
2850 | switch (stub_entry->stub_type) | |
2851 | { | |
2852 | case aarch64_stub_adrp_branch: | |
2853 | template = aarch64_adrp_branch_stub; | |
2854 | template_size = sizeof (aarch64_adrp_branch_stub); | |
2855 | break; | |
2856 | case aarch64_stub_long_branch: | |
2857 | template = aarch64_long_branch_stub; | |
2858 | template_size = sizeof (aarch64_long_branch_stub); | |
2859 | break; | |
68fcca92 JW |
2860 | case aarch64_stub_erratum_835769_veneer: |
2861 | template = aarch64_erratum_835769_stub; | |
2862 | template_size = sizeof (aarch64_erratum_835769_stub); | |
2863 | break; | |
4106101c MS |
2864 | case aarch64_stub_erratum_843419_veneer: |
2865 | template = aarch64_erratum_843419_stub; | |
2866 | template_size = sizeof (aarch64_erratum_843419_stub); | |
2867 | break; | |
a06ea964 | 2868 | default: |
8e2fe09f | 2869 | abort (); |
a06ea964 NC |
2870 | } |
2871 | ||
2872 | for (i = 0; i < (template_size / sizeof template[0]); i++) | |
2873 | { | |
2874 | bfd_putl32 (template[i], loc); | |
2875 | loc += 4; | |
2876 | } | |
2877 | ||
2878 | template_size = (template_size + 7) & ~7; | |
2879 | stub_sec->size += template_size; | |
2880 | ||
2881 | switch (stub_entry->stub_type) | |
2882 | { | |
2883 | case aarch64_stub_adrp_branch: | |
a6bb11b2 | 2884 | if (aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21), stub_bfd, stub_sec, |
a06ea964 NC |
2885 | stub_entry->stub_offset, sym_value)) |
2886 | /* The stub would not have been relaxed if the offset was out | |
2887 | of range. */ | |
2888 | BFD_FAIL (); | |
2889 | ||
93ca8569 TB |
2890 | if (aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC), stub_bfd, stub_sec, |
2891 | stub_entry->stub_offset + 4, sym_value)) | |
2892 | BFD_FAIL (); | |
a06ea964 NC |
2893 | break; |
2894 | ||
2895 | case aarch64_stub_long_branch: | |
2896 | /* We want the value relative to the address 12 bytes back from the | |
2897 | value itself. */ | |
93ca8569 TB |
2898 | if (aarch64_relocate (AARCH64_R (PRELNN), stub_bfd, stub_sec, |
2899 | stub_entry->stub_offset + 16, sym_value + 12)) | |
2900 | BFD_FAIL (); | |
a06ea964 | 2901 | break; |
68fcca92 JW |
2902 | |
2903 | case aarch64_stub_erratum_835769_veneer: | |
2904 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
2905 | + stub_entry->target_section->output_offset | |
2906 | + stub_entry->target_value; | |
2907 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
2908 | + stub_entry->stub_sec->output_offset | |
2909 | + stub_entry->stub_offset; | |
2910 | branch_offset = veneered_insn_loc - veneer_entry_loc; | |
2911 | branch_offset >>= 2; | |
2912 | branch_offset &= 0x3ffffff; | |
2913 | bfd_putl32 (stub_entry->veneered_insn, | |
2914 | stub_sec->contents + stub_entry->stub_offset); | |
2915 | bfd_putl32 (template[1] | branch_offset, | |
2916 | stub_sec->contents + stub_entry->stub_offset + 4); | |
2917 | break; | |
2918 | ||
4106101c MS |
2919 | case aarch64_stub_erratum_843419_veneer: |
2920 | if (aarch64_relocate (AARCH64_R (JUMP26), stub_bfd, stub_sec, | |
2921 | stub_entry->stub_offset + 4, sym_value + 4)) | |
2922 | BFD_FAIL (); | |
2923 | break; | |
2924 | ||
a06ea964 | 2925 | default: |
8e2fe09f | 2926 | abort (); |
a06ea964 NC |
2927 | } |
2928 | ||
2929 | return TRUE; | |
2930 | } | |
2931 | ||
2932 | /* As above, but don't actually build the stub. Just bump offset so | |
2933 | we know stub section sizes. */ | |
2934 | ||
2935 | static bfd_boolean | |
2936 | aarch64_size_one_stub (struct bfd_hash_entry *gen_entry, | |
2937 | void *in_arg ATTRIBUTE_UNUSED) | |
2938 | { | |
cec5225b | 2939 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
2940 | int size; |
2941 | ||
2942 | /* Massage our args to the form they really have. */ | |
cec5225b | 2943 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
2944 | |
2945 | switch (stub_entry->stub_type) | |
2946 | { | |
2947 | case aarch64_stub_adrp_branch: | |
2948 | size = sizeof (aarch64_adrp_branch_stub); | |
2949 | break; | |
2950 | case aarch64_stub_long_branch: | |
2951 | size = sizeof (aarch64_long_branch_stub); | |
2952 | break; | |
68fcca92 JW |
2953 | case aarch64_stub_erratum_835769_veneer: |
2954 | size = sizeof (aarch64_erratum_835769_stub); | |
2955 | break; | |
4106101c MS |
2956 | case aarch64_stub_erratum_843419_veneer: |
2957 | size = sizeof (aarch64_erratum_843419_stub); | |
2958 | break; | |
a06ea964 | 2959 | default: |
8e2fe09f | 2960 | abort (); |
a06ea964 NC |
2961 | } |
2962 | ||
2963 | size = (size + 7) & ~7; | |
2964 | stub_entry->stub_sec->size += size; | |
2965 | return TRUE; | |
2966 | } | |
2967 | ||
2968 | /* External entry points for sizing and building linker stubs. */ | |
2969 | ||
2970 | /* Set up various things so that we can make a list of input sections | |
2971 | for each output section included in the link. Returns -1 on error, | |
2972 | 0 when no stubs will be needed, and 1 on success. */ | |
2973 | ||
2974 | int | |
cec5225b | 2975 | elfNN_aarch64_setup_section_lists (bfd *output_bfd, |
a06ea964 NC |
2976 | struct bfd_link_info *info) |
2977 | { | |
2978 | bfd *input_bfd; | |
2979 | unsigned int bfd_count; | |
2980 | int top_id, top_index; | |
2981 | asection *section; | |
2982 | asection **input_list, **list; | |
2983 | bfd_size_type amt; | |
cec5225b YZ |
2984 | struct elf_aarch64_link_hash_table *htab = |
2985 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
2986 | |
2987 | if (!is_elf_hash_table (htab)) | |
2988 | return 0; | |
2989 | ||
2990 | /* Count the number of input BFDs and find the top input section id. */ | |
2991 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
c72f2fb2 | 2992 | input_bfd != NULL; input_bfd = input_bfd->link.next) |
a06ea964 NC |
2993 | { |
2994 | bfd_count += 1; | |
2995 | for (section = input_bfd->sections; | |
2996 | section != NULL; section = section->next) | |
2997 | { | |
2998 | if (top_id < section->id) | |
2999 | top_id = section->id; | |
3000 | } | |
3001 | } | |
3002 | htab->bfd_count = bfd_count; | |
3003 | ||
3004 | amt = sizeof (struct map_stub) * (top_id + 1); | |
3005 | htab->stub_group = bfd_zmalloc (amt); | |
3006 | if (htab->stub_group == NULL) | |
3007 | return -1; | |
3008 | ||
3009 | /* We can't use output_bfd->section_count here to find the top output | |
3010 | section index as some sections may have been removed, and | |
3011 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
3012 | for (section = output_bfd->sections, top_index = 0; | |
3013 | section != NULL; section = section->next) | |
3014 | { | |
3015 | if (top_index < section->index) | |
3016 | top_index = section->index; | |
3017 | } | |
3018 | ||
3019 | htab->top_index = top_index; | |
3020 | amt = sizeof (asection *) * (top_index + 1); | |
3021 | input_list = bfd_malloc (amt); | |
3022 | htab->input_list = input_list; | |
3023 | if (input_list == NULL) | |
3024 | return -1; | |
3025 | ||
3026 | /* For sections we aren't interested in, mark their entries with a | |
3027 | value we can check later. */ | |
3028 | list = input_list + top_index; | |
3029 | do | |
3030 | *list = bfd_abs_section_ptr; | |
3031 | while (list-- != input_list); | |
3032 | ||
3033 | for (section = output_bfd->sections; | |
3034 | section != NULL; section = section->next) | |
3035 | { | |
3036 | if ((section->flags & SEC_CODE) != 0) | |
3037 | input_list[section->index] = NULL; | |
3038 | } | |
3039 | ||
3040 | return 1; | |
3041 | } | |
3042 | ||
cec5225b | 3043 | /* Used by elfNN_aarch64_next_input_section and group_sections. */ |
a06ea964 NC |
3044 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3045 | ||
3046 | /* The linker repeatedly calls this function for each input section, | |
3047 | in the order that input sections are linked into output sections. | |
3048 | Build lists of input sections to determine groupings between which | |
3049 | we may insert linker stubs. */ | |
3050 | ||
3051 | void | |
cec5225b | 3052 | elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec) |
a06ea964 | 3053 | { |
cec5225b YZ |
3054 | struct elf_aarch64_link_hash_table *htab = |
3055 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
3056 | |
3057 | if (isec->output_section->index <= htab->top_index) | |
3058 | { | |
3059 | asection **list = htab->input_list + isec->output_section->index; | |
3060 | ||
3061 | if (*list != bfd_abs_section_ptr) | |
3062 | { | |
3063 | /* Steal the link_sec pointer for our list. */ | |
3064 | /* This happens to make the list in reverse order, | |
3065 | which is what we want. */ | |
3066 | PREV_SEC (isec) = *list; | |
3067 | *list = isec; | |
3068 | } | |
3069 | } | |
3070 | } | |
3071 | ||
3072 | /* See whether we can group stub sections together. Grouping stub | |
3073 | sections may result in fewer stubs. More importantly, we need to | |
3074 | put all .init* and .fini* stubs at the beginning of the .init or | |
3075 | .fini output sections respectively, because glibc splits the | |
3076 | _init and _fini functions into multiple parts. Putting a stub in | |
3077 | the middle of a function is not a good idea. */ | |
3078 | ||
3079 | static void | |
cec5225b | 3080 | group_sections (struct elf_aarch64_link_hash_table *htab, |
a06ea964 NC |
3081 | bfd_size_type stub_group_size, |
3082 | bfd_boolean stubs_always_before_branch) | |
3083 | { | |
3084 | asection **list = htab->input_list + htab->top_index; | |
3085 | ||
3086 | do | |
3087 | { | |
3088 | asection *tail = *list; | |
3089 | ||
3090 | if (tail == bfd_abs_section_ptr) | |
3091 | continue; | |
3092 | ||
3093 | while (tail != NULL) | |
3094 | { | |
3095 | asection *curr; | |
3096 | asection *prev; | |
3097 | bfd_size_type total; | |
3098 | ||
3099 | curr = tail; | |
3100 | total = tail->size; | |
3101 | while ((prev = PREV_SEC (curr)) != NULL | |
3102 | && ((total += curr->output_offset - prev->output_offset) | |
3103 | < stub_group_size)) | |
3104 | curr = prev; | |
3105 | ||
3106 | /* OK, the size from the start of CURR to the end is less | |
3107 | than stub_group_size and thus can be handled by one stub | |
3108 | section. (Or the tail section is itself larger than | |
3109 | stub_group_size, in which case we may be toast.) | |
3110 | We should really be keeping track of the total size of | |
3111 | stubs added here, as stubs contribute to the final output | |
3112 | section size. */ | |
3113 | do | |
3114 | { | |
3115 | prev = PREV_SEC (tail); | |
3116 | /* Set up this stub group. */ | |
3117 | htab->stub_group[tail->id].link_sec = curr; | |
3118 | } | |
3119 | while (tail != curr && (tail = prev) != NULL); | |
3120 | ||
3121 | /* But wait, there's more! Input sections up to stub_group_size | |
3122 | bytes before the stub section can be handled by it too. */ | |
3123 | if (!stubs_always_before_branch) | |
3124 | { | |
3125 | total = 0; | |
3126 | while (prev != NULL | |
3127 | && ((total += tail->output_offset - prev->output_offset) | |
3128 | < stub_group_size)) | |
3129 | { | |
3130 | tail = prev; | |
3131 | prev = PREV_SEC (tail); | |
3132 | htab->stub_group[tail->id].link_sec = curr; | |
3133 | } | |
3134 | } | |
3135 | tail = prev; | |
3136 | } | |
3137 | } | |
3138 | while (list-- != htab->input_list); | |
3139 | ||
3140 | free (htab->input_list); | |
3141 | } | |
3142 | ||
3143 | #undef PREV_SEC | |
3144 | ||
68fcca92 JW |
3145 | #define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1)) |
3146 | ||
3147 | #define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5) | |
3148 | #define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5) | |
3149 | #define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5) | |
3150 | #define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5) | |
3151 | #define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5) | |
3152 | #define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5) | |
3153 | ||
3154 | #define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000) | |
3155 | #define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1) | |
3156 | #define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3) | |
3157 | #define AARCH64_ZR 0x1f | |
3158 | ||
3159 | /* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for | |
3160 | LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */ | |
3161 | ||
3162 | #define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1) | |
3163 | #define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000) | |
3164 | #define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000) | |
3165 | #define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000) | |
3166 | #define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000) | |
3167 | #define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000) | |
3168 | #define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000) | |
3169 | #define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000) | |
3170 | #define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000) | |
3171 | #define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400) | |
3172 | #define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800) | |
3173 | #define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00) | |
3174 | #define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800) | |
3175 | #define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000) | |
3176 | #define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000) | |
3177 | #define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000) | |
3178 | #define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000) | |
3179 | #define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000) | |
3180 | ||
3d14faea MS |
3181 | /* Classify an INSN if it is indeed a load/store. |
3182 | ||
3183 | Return TRUE if INSN is a LD/ST instruction otherwise return FALSE. | |
3184 | ||
3185 | For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2 | |
3186 | is set equal to RT. | |
3187 | ||
3188 | For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. | |
3189 | ||
3190 | */ | |
68fcca92 JW |
3191 | |
3192 | static bfd_boolean | |
3d14faea | 3193 | aarch64_mem_op_p (uint32_t insn, unsigned int *rt, unsigned int *rt2, |
68fcca92 JW |
3194 | bfd_boolean *pair, bfd_boolean *load) |
3195 | { | |
3196 | uint32_t opcode; | |
3197 | unsigned int r; | |
3198 | uint32_t opc = 0; | |
3199 | uint32_t v = 0; | |
3200 | uint32_t opc_v = 0; | |
3201 | ||
3202 | /* Bail out quickly if INSN doesn't fall into the the load-store | |
3203 | encoding space. */ | |
3204 | if (!AARCH64_LDST (insn)) | |
3205 | return FALSE; | |
3206 | ||
3207 | *pair = FALSE; | |
3208 | *load = FALSE; | |
3209 | if (AARCH64_LDST_EX (insn)) | |
3210 | { | |
3211 | *rt = AARCH64_RT (insn); | |
3d14faea | 3212 | *rt2 = *rt; |
68fcca92 JW |
3213 | if (AARCH64_BIT (insn, 21) == 1) |
3214 | { | |
3215 | *pair = TRUE; | |
3d14faea | 3216 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
3217 | } |
3218 | *load = AARCH64_LD (insn); | |
3219 | return TRUE; | |
3220 | } | |
3221 | else if (AARCH64_LDST_NAP (insn) | |
3222 | || AARCH64_LDSTP_PI (insn) | |
3223 | || AARCH64_LDSTP_O (insn) | |
3224 | || AARCH64_LDSTP_PRE (insn)) | |
3225 | { | |
3226 | *pair = TRUE; | |
3227 | *rt = AARCH64_RT (insn); | |
3d14faea | 3228 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
3229 | *load = AARCH64_LD (insn); |
3230 | return TRUE; | |
3231 | } | |
3232 | else if (AARCH64_LDST_PCREL (insn) | |
3233 | || AARCH64_LDST_UI (insn) | |
3234 | || AARCH64_LDST_PIIMM (insn) | |
3235 | || AARCH64_LDST_U (insn) | |
3236 | || AARCH64_LDST_PREIMM (insn) | |
3237 | || AARCH64_LDST_RO (insn) | |
3238 | || AARCH64_LDST_UIMM (insn)) | |
3239 | { | |
3240 | *rt = AARCH64_RT (insn); | |
3d14faea | 3241 | *rt2 = *rt; |
68fcca92 JW |
3242 | if (AARCH64_LDST_PCREL (insn)) |
3243 | *load = TRUE; | |
3244 | opc = AARCH64_BITS (insn, 22, 2); | |
3245 | v = AARCH64_BIT (insn, 26); | |
3246 | opc_v = opc | (v << 2); | |
3247 | *load = (opc_v == 1 || opc_v == 2 || opc_v == 3 | |
3248 | || opc_v == 5 || opc_v == 7); | |
3249 | return TRUE; | |
3250 | } | |
3251 | else if (AARCH64_LDST_SIMD_M (insn) | |
3252 | || AARCH64_LDST_SIMD_M_PI (insn)) | |
3253 | { | |
3254 | *rt = AARCH64_RT (insn); | |
3255 | *load = AARCH64_BIT (insn, 22); | |
3256 | opcode = (insn >> 12) & 0xf; | |
3257 | switch (opcode) | |
3258 | { | |
3259 | case 0: | |
3260 | case 2: | |
3d14faea | 3261 | *rt2 = *rt + 3; |
68fcca92 JW |
3262 | break; |
3263 | ||
3264 | case 4: | |
3265 | case 6: | |
3d14faea | 3266 | *rt2 = *rt + 2; |
68fcca92 JW |
3267 | break; |
3268 | ||
3269 | case 7: | |
3d14faea | 3270 | *rt2 = *rt; |
68fcca92 JW |
3271 | break; |
3272 | ||
3273 | case 8: | |
3274 | case 10: | |
3d14faea | 3275 | *rt2 = *rt + 1; |
68fcca92 JW |
3276 | break; |
3277 | ||
3278 | default: | |
3279 | return FALSE; | |
3280 | } | |
3281 | return TRUE; | |
3282 | } | |
3283 | else if (AARCH64_LDST_SIMD_S (insn) | |
3284 | || AARCH64_LDST_SIMD_S_PI (insn)) | |
3285 | { | |
3286 | *rt = AARCH64_RT (insn); | |
3287 | r = (insn >> 21) & 1; | |
3288 | *load = AARCH64_BIT (insn, 22); | |
3289 | opcode = (insn >> 13) & 0x7; | |
3290 | switch (opcode) | |
3291 | { | |
3292 | case 0: | |
3293 | case 2: | |
3294 | case 4: | |
3d14faea | 3295 | *rt2 = *rt + r; |
68fcca92 JW |
3296 | break; |
3297 | ||
3298 | case 1: | |
3299 | case 3: | |
3300 | case 5: | |
3d14faea | 3301 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
3302 | break; |
3303 | ||
3304 | case 6: | |
3d14faea | 3305 | *rt2 = *rt + r; |
68fcca92 JW |
3306 | break; |
3307 | ||
3308 | case 7: | |
3d14faea | 3309 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
3310 | break; |
3311 | ||
3312 | default: | |
3313 | return FALSE; | |
3314 | } | |
3315 | return TRUE; | |
3316 | } | |
3317 | ||
3318 | return FALSE; | |
3319 | } | |
3320 | ||
3321 | /* Return TRUE if INSN is multiply-accumulate. */ | |
3322 | ||
3323 | static bfd_boolean | |
3324 | aarch64_mlxl_p (uint32_t insn) | |
3325 | { | |
3326 | uint32_t op31 = AARCH64_OP31 (insn); | |
3327 | ||
3328 | if (AARCH64_MAC (insn) | |
3329 | && (op31 == 0 || op31 == 1 || op31 == 5) | |
3330 | /* Exclude MUL instructions which are encoded as a multiple accumulate | |
3331 | with RA = XZR. */ | |
3332 | && AARCH64_RA (insn) != AARCH64_ZR) | |
3333 | return TRUE; | |
3334 | ||
3335 | return FALSE; | |
3336 | } | |
3337 | ||
3338 | /* Some early revisions of the Cortex-A53 have an erratum (835769) whereby | |
3339 | it is possible for a 64-bit multiply-accumulate instruction to generate an | |
3340 | incorrect result. The details are quite complex and hard to | |
3341 | determine statically, since branches in the code may exist in some | |
3342 | circumstances, but all cases end with a memory (load, store, or | |
3343 | prefetch) instruction followed immediately by the multiply-accumulate | |
3344 | operation. We employ a linker patching technique, by moving the potentially | |
3345 | affected multiply-accumulate instruction into a patch region and replacing | |
3346 | the original instruction with a branch to the patch. This function checks | |
3347 | if INSN_1 is the memory operation followed by a multiply-accumulate | |
3348 | operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE | |
3349 | if INSN_1 and INSN_2 are safe. */ | |
3350 | ||
3351 | static bfd_boolean | |
3352 | aarch64_erratum_sequence (uint32_t insn_1, uint32_t insn_2) | |
3353 | { | |
3354 | uint32_t rt; | |
3d14faea | 3355 | uint32_t rt2; |
68fcca92 JW |
3356 | uint32_t rn; |
3357 | uint32_t rm; | |
3358 | uint32_t ra; | |
3359 | bfd_boolean pair; | |
3360 | bfd_boolean load; | |
3361 | ||
3362 | if (aarch64_mlxl_p (insn_2) | |
3d14faea | 3363 | && aarch64_mem_op_p (insn_1, &rt, &rt2, &pair, &load)) |
68fcca92 JW |
3364 | { |
3365 | /* Any SIMD memory op is independent of the subsequent MLA | |
3366 | by definition of the erratum. */ | |
3367 | if (AARCH64_BIT (insn_1, 26)) | |
3368 | return TRUE; | |
3369 | ||
3370 | /* If not SIMD, check for integer memory ops and MLA relationship. */ | |
3371 | rn = AARCH64_RN (insn_2); | |
3372 | ra = AARCH64_RA (insn_2); | |
3373 | rm = AARCH64_RM (insn_2); | |
3374 | ||
3375 | /* If this is a load and there's a true(RAW) dependency, we are safe | |
3376 | and this is not an erratum sequence. */ | |
3377 | if (load && | |
3378 | (rt == rn || rt == rm || rt == ra | |
3d14faea | 3379 | || (pair && (rt2 == rn || rt2 == rm || rt2 == ra)))) |
68fcca92 JW |
3380 | return FALSE; |
3381 | ||
3382 | /* We conservatively put out stubs for all other cases (including | |
3383 | writebacks). */ | |
3384 | return TRUE; | |
3385 | } | |
3386 | ||
3387 | return FALSE; | |
3388 | } | |
3389 | ||
520c7b56 JW |
3390 | /* Used to order a list of mapping symbols by address. */ |
3391 | ||
3392 | static int | |
3393 | elf_aarch64_compare_mapping (const void *a, const void *b) | |
3394 | { | |
3395 | const elf_aarch64_section_map *amap = (const elf_aarch64_section_map *) a; | |
3396 | const elf_aarch64_section_map *bmap = (const elf_aarch64_section_map *) b; | |
3397 | ||
3398 | if (amap->vma > bmap->vma) | |
3399 | return 1; | |
3400 | else if (amap->vma < bmap->vma) | |
3401 | return -1; | |
3402 | else if (amap->type > bmap->type) | |
3403 | /* Ensure results do not depend on the host qsort for objects with | |
3404 | multiple mapping symbols at the same address by sorting on type | |
3405 | after vma. */ | |
3406 | return 1; | |
3407 | else if (amap->type < bmap->type) | |
3408 | return -1; | |
3409 | else | |
3410 | return 0; | |
3411 | } | |
3412 | ||
2144188d | 3413 | |
35fee8b7 MS |
3414 | static char * |
3415 | _bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes) | |
3416 | { | |
3417 | char *stub_name = (char *) bfd_malloc | |
3418 | (strlen ("__erratum_835769_veneer_") + 16); | |
3419 | sprintf (stub_name,"__erratum_835769_veneer_%d", num_fixes); | |
3420 | return stub_name; | |
3421 | } | |
3422 | ||
4106101c | 3423 | /* Scan for Cortex-A53 erratum 835769 sequence. |
2144188d MS |
3424 | |
3425 | Return TRUE else FALSE on abnormal termination. */ | |
3426 | ||
68fcca92 | 3427 | static bfd_boolean |
5421cc6e MS |
3428 | _bfd_aarch64_erratum_835769_scan (bfd *input_bfd, |
3429 | struct bfd_link_info *info, | |
3430 | unsigned int *num_fixes_p) | |
68fcca92 JW |
3431 | { |
3432 | asection *section; | |
3433 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
68fcca92 | 3434 | unsigned int num_fixes = *num_fixes_p; |
68fcca92 JW |
3435 | |
3436 | if (htab == NULL) | |
2144188d | 3437 | return TRUE; |
68fcca92 JW |
3438 | |
3439 | for (section = input_bfd->sections; | |
3440 | section != NULL; | |
3441 | section = section->next) | |
3442 | { | |
3443 | bfd_byte *contents = NULL; | |
3444 | struct _aarch64_elf_section_data *sec_data; | |
3445 | unsigned int span; | |
3446 | ||
3447 | if (elf_section_type (section) != SHT_PROGBITS | |
3448 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
3449 | || (section->flags & SEC_EXCLUDE) != 0 | |
3450 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
3451 | || (section->output_section == bfd_abs_section_ptr)) | |
3452 | continue; | |
3453 | ||
3454 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
3455 | contents = elf_section_data (section)->this_hdr.contents; | |
3456 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
2144188d | 3457 | return FALSE; |
68fcca92 JW |
3458 | |
3459 | sec_data = elf_aarch64_section_data (section); | |
520c7b56 JW |
3460 | |
3461 | qsort (sec_data->map, sec_data->mapcount, | |
3462 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
3463 | ||
68fcca92 JW |
3464 | for (span = 0; span < sec_data->mapcount; span++) |
3465 | { | |
3466 | unsigned int span_start = sec_data->map[span].vma; | |
3467 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
3468 | ? sec_data->map[0].vma + section->size | |
3469 | : sec_data->map[span + 1].vma); | |
3470 | unsigned int i; | |
3471 | char span_type = sec_data->map[span].type; | |
3472 | ||
3473 | if (span_type == 'd') | |
3474 | continue; | |
3475 | ||
3476 | for (i = span_start; i + 4 < span_end; i += 4) | |
3477 | { | |
3478 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
3479 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
3480 | ||
3481 | if (aarch64_erratum_sequence (insn_1, insn_2)) | |
3482 | { | |
5421cc6e | 3483 | struct elf_aarch64_stub_hash_entry *stub_entry; |
35fee8b7 MS |
3484 | char *stub_name = _bfd_aarch64_erratum_835769_stub_name (num_fixes); |
3485 | if (! stub_name) | |
2144188d | 3486 | return FALSE; |
68fcca92 | 3487 | |
5421cc6e MS |
3488 | stub_entry = _bfd_aarch64_add_stub_entry_in_group (stub_name, |
3489 | section, | |
3490 | htab); | |
3491 | if (! stub_entry) | |
3492 | return FALSE; | |
68fcca92 | 3493 | |
5421cc6e MS |
3494 | stub_entry->stub_type = aarch64_stub_erratum_835769_veneer; |
3495 | stub_entry->target_section = section; | |
3496 | stub_entry->target_value = i + 4; | |
3497 | stub_entry->veneered_insn = insn_2; | |
3498 | stub_entry->output_name = stub_name; | |
68fcca92 JW |
3499 | num_fixes++; |
3500 | } | |
3501 | } | |
3502 | } | |
3503 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
3504 | free (contents); | |
3505 | } | |
3506 | ||
357d1523 MS |
3507 | *num_fixes_p = num_fixes; |
3508 | ||
2144188d | 3509 | return TRUE; |
68fcca92 JW |
3510 | } |
3511 | ||
13f622ec | 3512 | |
4106101c MS |
3513 | /* Test if instruction INSN is ADRP. */ |
3514 | ||
3515 | static bfd_boolean | |
3516 | _bfd_aarch64_adrp_p (uint32_t insn) | |
3517 | { | |
3518 | return ((insn & 0x9f000000) == 0x90000000); | |
3519 | } | |
3520 | ||
3521 | ||
3522 | /* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */ | |
3523 | ||
3524 | static bfd_boolean | |
3525 | _bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1, uint32_t insn_2, | |
3526 | uint32_t insn_3) | |
3527 | { | |
3528 | uint32_t rt; | |
3529 | uint32_t rt2; | |
3530 | bfd_boolean pair; | |
3531 | bfd_boolean load; | |
3532 | ||
3533 | return (aarch64_mem_op_p (insn_2, &rt, &rt2, &pair, &load) | |
3534 | && (!pair | |
3535 | || (pair && !load)) | |
3536 | && AARCH64_LDST_UIMM (insn_3) | |
3537 | && AARCH64_RN (insn_3) == AARCH64_RD (insn_1)); | |
3538 | } | |
3539 | ||
3540 | ||
3541 | /* Test for the presence of Cortex-A53 erratum 843419 instruction sequence. | |
3542 | ||
3543 | Return TRUE if section CONTENTS at offset I contains one of the | |
3544 | erratum 843419 sequences, otherwise return FALSE. If a sequence is | |
3545 | seen set P_VENEER_I to the offset of the final LOAD/STORE | |
3546 | instruction in the sequence. | |
3547 | */ | |
3548 | ||
3549 | static bfd_boolean | |
3550 | _bfd_aarch64_erratum_843419_p (bfd_byte *contents, bfd_vma vma, | |
3551 | bfd_vma i, bfd_vma span_end, | |
3552 | bfd_vma *p_veneer_i) | |
3553 | { | |
3554 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
3555 | ||
3556 | if (!_bfd_aarch64_adrp_p (insn_1)) | |
3557 | return FALSE; | |
3558 | ||
3559 | if (span_end < i + 12) | |
3560 | return FALSE; | |
3561 | ||
3562 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
3563 | uint32_t insn_3 = bfd_getl32 (contents + i + 8); | |
3564 | ||
3565 | if ((vma & 0xfff) != 0xff8 && (vma & 0xfff) != 0xffc) | |
3566 | return FALSE; | |
3567 | ||
3568 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_3)) | |
3569 | { | |
3570 | *p_veneer_i = i + 8; | |
3571 | return TRUE; | |
3572 | } | |
3573 | ||
3574 | if (span_end < i + 16) | |
3575 | return FALSE; | |
3576 | ||
3577 | uint32_t insn_4 = bfd_getl32 (contents + i + 12); | |
3578 | ||
3579 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_4)) | |
3580 | { | |
3581 | *p_veneer_i = i + 12; | |
3582 | return TRUE; | |
3583 | } | |
3584 | ||
3585 | return FALSE; | |
3586 | } | |
3587 | ||
3588 | ||
13f622ec MS |
3589 | /* Resize all stub sections. */ |
3590 | ||
3591 | static void | |
3592 | _bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table *htab) | |
3593 | { | |
3594 | asection *section; | |
3595 | ||
3596 | /* OK, we've added some stubs. Find out the new size of the | |
3597 | stub sections. */ | |
3598 | for (section = htab->stub_bfd->sections; | |
3599 | section != NULL; section = section->next) | |
3600 | { | |
3601 | /* Ignore non-stub sections. */ | |
3602 | if (!strstr (section->name, STUB_SUFFIX)) | |
3603 | continue; | |
3604 | section->size = 0; | |
3605 | } | |
3606 | ||
3607 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab); | |
13f622ec | 3608 | |
61865519 MS |
3609 | for (section = htab->stub_bfd->sections; |
3610 | section != NULL; section = section->next) | |
3611 | { | |
3612 | if (!strstr (section->name, STUB_SUFFIX)) | |
3613 | continue; | |
3614 | ||
3615 | if (section->size) | |
3616 | section->size += 4; | |
4106101c MS |
3617 | |
3618 | /* Ensure all stub sections have a size which is a multiple of | |
3619 | 4096. This is important in order to ensure that the insertion | |
3620 | of stub sections does not in itself move existing code around | |
3621 | in such a way that new errata sequences are created. */ | |
3622 | if (htab->fix_erratum_843419) | |
3623 | if (section->size) | |
3624 | section->size = BFD_ALIGN (section->size, 0x1000); | |
3625 | } | |
3626 | } | |
3627 | ||
3628 | ||
3629 | /* Construct an erratum 843419 workaround stub name. | |
3630 | */ | |
3631 | ||
3632 | static char * | |
3633 | _bfd_aarch64_erratum_843419_stub_name (asection *input_section, | |
3634 | bfd_vma offset) | |
3635 | { | |
3636 | const bfd_size_type len = 8 + 4 + 1 + 8 + 1 + 16 + 1; | |
3637 | char *stub_name = bfd_malloc (len); | |
3638 | ||
3639 | if (stub_name != NULL) | |
3640 | snprintf (stub_name, len, "e843419@%04x_%08x_%" BFD_VMA_FMT "x", | |
3641 | input_section->owner->id, | |
3642 | input_section->id, | |
3643 | offset); | |
3644 | return stub_name; | |
3645 | } | |
3646 | ||
3647 | /* Build a stub_entry structure describing an 843419 fixup. | |
3648 | ||
3649 | The stub_entry constructed is populated with the bit pattern INSN | |
3650 | of the instruction located at OFFSET within input SECTION. | |
3651 | ||
3652 | Returns TRUE on success. */ | |
3653 | ||
3654 | static bfd_boolean | |
3655 | _bfd_aarch64_erratum_843419_fixup (uint32_t insn, | |
3656 | bfd_vma adrp_offset, | |
3657 | bfd_vma ldst_offset, | |
3658 | asection *section, | |
3659 | struct bfd_link_info *info) | |
3660 | { | |
3661 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
3662 | char *stub_name; | |
3663 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
3664 | ||
3665 | stub_name = _bfd_aarch64_erratum_843419_stub_name (section, ldst_offset); | |
3666 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
3667 | FALSE, FALSE); | |
3668 | if (stub_entry) | |
3669 | { | |
3670 | free (stub_name); | |
3671 | return TRUE; | |
3672 | } | |
3673 | ||
3674 | /* We always place an 843419 workaround veneer in the stub section | |
3675 | attached to the input section in which an erratum sequence has | |
3676 | been found. This ensures that later in the link process (in | |
3677 | elfNN_aarch64_write_section) when we copy the veneered | |
3678 | instruction from the input section into the stub section the | |
3679 | copied instruction will have had any relocations applied to it. | |
3680 | If we placed workaround veneers in any other stub section then we | |
3681 | could not assume that all relocations have been processed on the | |
3682 | corresponding input section at the point we output the stub | |
3683 | section. | |
3684 | */ | |
3685 | ||
3686 | stub_entry = _bfd_aarch64_add_stub_entry_after (stub_name, section, htab); | |
3687 | if (stub_entry == NULL) | |
3688 | { | |
3689 | free (stub_name); | |
3690 | return FALSE; | |
3691 | } | |
3692 | ||
3693 | stub_entry->adrp_offset = adrp_offset; | |
3694 | stub_entry->target_value = ldst_offset; | |
3695 | stub_entry->target_section = section; | |
3696 | stub_entry->stub_type = aarch64_stub_erratum_843419_veneer; | |
3697 | stub_entry->veneered_insn = insn; | |
3698 | stub_entry->output_name = stub_name; | |
3699 | ||
3700 | return TRUE; | |
3701 | } | |
3702 | ||
3703 | ||
3704 | /* Scan an input section looking for the signature of erratum 843419. | |
3705 | ||
3706 | Scans input SECTION in INPUT_BFD looking for erratum 843419 | |
3707 | signatures, for each signature found a stub_entry is created | |
3708 | describing the location of the erratum for subsequent fixup. | |
3709 | ||
3710 | Return TRUE on successful scan, FALSE on failure to scan. | |
3711 | */ | |
3712 | ||
3713 | static bfd_boolean | |
3714 | _bfd_aarch64_erratum_843419_scan (bfd *input_bfd, asection *section, | |
3715 | struct bfd_link_info *info) | |
3716 | { | |
3717 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
3718 | ||
3719 | if (htab == NULL) | |
3720 | return TRUE; | |
3721 | ||
3722 | if (elf_section_type (section) != SHT_PROGBITS | |
3723 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
3724 | || (section->flags & SEC_EXCLUDE) != 0 | |
3725 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
3726 | || (section->output_section == bfd_abs_section_ptr)) | |
3727 | return TRUE; | |
3728 | ||
3729 | do | |
3730 | { | |
3731 | bfd_byte *contents = NULL; | |
3732 | struct _aarch64_elf_section_data *sec_data; | |
3733 | unsigned int span; | |
3734 | ||
3735 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
3736 | contents = elf_section_data (section)->this_hdr.contents; | |
3737 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
3738 | return FALSE; | |
3739 | ||
3740 | sec_data = elf_aarch64_section_data (section); | |
3741 | ||
3742 | qsort (sec_data->map, sec_data->mapcount, | |
3743 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
3744 | ||
3745 | for (span = 0; span < sec_data->mapcount; span++) | |
3746 | { | |
3747 | unsigned int span_start = sec_data->map[span].vma; | |
3748 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
3749 | ? sec_data->map[0].vma + section->size | |
3750 | : sec_data->map[span + 1].vma); | |
3751 | unsigned int i; | |
3752 | char span_type = sec_data->map[span].type; | |
3753 | ||
3754 | if (span_type == 'd') | |
3755 | continue; | |
3756 | ||
3757 | for (i = span_start; i + 8 < span_end; i += 4) | |
3758 | { | |
3759 | bfd_vma vma = (section->output_section->vma | |
3760 | + section->output_offset | |
3761 | + i); | |
3762 | bfd_vma veneer_i; | |
3763 | ||
3764 | if (_bfd_aarch64_erratum_843419_p | |
3765 | (contents, vma, i, span_end, &veneer_i)) | |
3766 | { | |
3767 | uint32_t insn = bfd_getl32 (contents + veneer_i); | |
3768 | ||
3769 | if (!_bfd_aarch64_erratum_843419_fixup (insn, i, veneer_i, | |
3770 | section, info)) | |
3771 | return FALSE; | |
3772 | } | |
3773 | } | |
3774 | } | |
3775 | ||
3776 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
3777 | free (contents); | |
61865519 | 3778 | } |
4106101c MS |
3779 | while (0); |
3780 | ||
3781 | return TRUE; | |
61865519 | 3782 | } |
13f622ec | 3783 | |
4106101c | 3784 | |
a06ea964 NC |
3785 | /* Determine and set the size of the stub section for a final link. |
3786 | ||
3787 | The basic idea here is to examine all the relocations looking for | |
3788 | PC-relative calls to a target that is unreachable with a "bl" | |
3789 | instruction. */ | |
3790 | ||
3791 | bfd_boolean | |
cec5225b | 3792 | elfNN_aarch64_size_stubs (bfd *output_bfd, |
a06ea964 NC |
3793 | bfd *stub_bfd, |
3794 | struct bfd_link_info *info, | |
3795 | bfd_signed_vma group_size, | |
3796 | asection * (*add_stub_section) (const char *, | |
3797 | asection *), | |
3798 | void (*layout_sections_again) (void)) | |
3799 | { | |
3800 | bfd_size_type stub_group_size; | |
3801 | bfd_boolean stubs_always_before_branch; | |
5421cc6e | 3802 | bfd_boolean stub_changed = FALSE; |
cec5225b | 3803 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); |
68fcca92 | 3804 | unsigned int num_erratum_835769_fixes = 0; |
a06ea964 NC |
3805 | |
3806 | /* Propagate mach to stub bfd, because it may not have been | |
3807 | finalized when we created stub_bfd. */ | |
3808 | bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd), | |
3809 | bfd_get_mach (output_bfd)); | |
3810 | ||
3811 | /* Stash our params away. */ | |
3812 | htab->stub_bfd = stub_bfd; | |
3813 | htab->add_stub_section = add_stub_section; | |
3814 | htab->layout_sections_again = layout_sections_again; | |
3815 | stubs_always_before_branch = group_size < 0; | |
3816 | if (group_size < 0) | |
3817 | stub_group_size = -group_size; | |
3818 | else | |
3819 | stub_group_size = group_size; | |
3820 | ||
3821 | if (stub_group_size == 1) | |
3822 | { | |
3823 | /* Default values. */ | |
b9eead84 | 3824 | /* AArch64 branch range is +-128MB. The value used is 1MB less. */ |
a06ea964 NC |
3825 | stub_group_size = 127 * 1024 * 1024; |
3826 | } | |
3827 | ||
3828 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
3829 | ||
4106101c MS |
3830 | (*htab->layout_sections_again) (); |
3831 | ||
5421cc6e MS |
3832 | if (htab->fix_erratum_835769) |
3833 | { | |
3834 | bfd *input_bfd; | |
3835 | ||
3836 | for (input_bfd = info->input_bfds; | |
3837 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
3838 | if (!_bfd_aarch64_erratum_835769_scan (input_bfd, info, | |
3839 | &num_erratum_835769_fixes)) | |
3840 | return FALSE; | |
3841 | ||
4106101c MS |
3842 | _bfd_aarch64_resize_stubs (htab); |
3843 | (*htab->layout_sections_again) (); | |
3844 | } | |
3845 | ||
3846 | if (htab->fix_erratum_843419) | |
3847 | { | |
3848 | bfd *input_bfd; | |
3849 | ||
3850 | for (input_bfd = info->input_bfds; | |
3851 | input_bfd != NULL; | |
3852 | input_bfd = input_bfd->link.next) | |
3853 | { | |
3854 | asection *section; | |
3855 | ||
3856 | for (section = input_bfd->sections; | |
3857 | section != NULL; | |
3858 | section = section->next) | |
3859 | if (!_bfd_aarch64_erratum_843419_scan (input_bfd, section, info)) | |
3860 | return FALSE; | |
3861 | } | |
3862 | ||
3863 | _bfd_aarch64_resize_stubs (htab); | |
3864 | (*htab->layout_sections_again) (); | |
5421cc6e MS |
3865 | } |
3866 | ||
a06ea964 NC |
3867 | while (1) |
3868 | { | |
3869 | bfd *input_bfd; | |
a06ea964 | 3870 | |
9b9971aa MS |
3871 | for (input_bfd = info->input_bfds; |
3872 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
a06ea964 NC |
3873 | { |
3874 | Elf_Internal_Shdr *symtab_hdr; | |
3875 | asection *section; | |
3876 | Elf_Internal_Sym *local_syms = NULL; | |
3877 | ||
3878 | /* We'll need the symbol table in a second. */ | |
3879 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3880 | if (symtab_hdr->sh_info == 0) | |
3881 | continue; | |
3882 | ||
3883 | /* Walk over each section attached to the input bfd. */ | |
3884 | for (section = input_bfd->sections; | |
3885 | section != NULL; section = section->next) | |
3886 | { | |
3887 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
3888 | ||
3889 | /* If there aren't any relocs, then there's nothing more | |
3890 | to do. */ | |
3891 | if ((section->flags & SEC_RELOC) == 0 | |
3892 | || section->reloc_count == 0 | |
3893 | || (section->flags & SEC_CODE) == 0) | |
3894 | continue; | |
3895 | ||
3896 | /* If this section is a link-once section that will be | |
3897 | discarded, then don't create any stubs. */ | |
3898 | if (section->output_section == NULL | |
3899 | || section->output_section->owner != output_bfd) | |
3900 | continue; | |
3901 | ||
3902 | /* Get the relocs. */ | |
3903 | internal_relocs | |
3904 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, | |
3905 | NULL, info->keep_memory); | |
3906 | if (internal_relocs == NULL) | |
3907 | goto error_ret_free_local; | |
3908 | ||
3909 | /* Now examine each relocation. */ | |
3910 | irela = internal_relocs; | |
3911 | irelaend = irela + section->reloc_count; | |
3912 | for (; irela < irelaend; irela++) | |
3913 | { | |
3914 | unsigned int r_type, r_indx; | |
cec5225b YZ |
3915 | enum elf_aarch64_stub_type stub_type; |
3916 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
a06ea964 NC |
3917 | asection *sym_sec; |
3918 | bfd_vma sym_value; | |
3919 | bfd_vma destination; | |
cec5225b | 3920 | struct elf_aarch64_link_hash_entry *hash; |
a06ea964 NC |
3921 | const char *sym_name; |
3922 | char *stub_name; | |
3923 | const asection *id_sec; | |
3924 | unsigned char st_type; | |
3925 | bfd_size_type len; | |
3926 | ||
cec5225b YZ |
3927 | r_type = ELFNN_R_TYPE (irela->r_info); |
3928 | r_indx = ELFNN_R_SYM (irela->r_info); | |
a06ea964 NC |
3929 | |
3930 | if (r_type >= (unsigned int) R_AARCH64_end) | |
3931 | { | |
3932 | bfd_set_error (bfd_error_bad_value); | |
3933 | error_ret_free_internal: | |
3934 | if (elf_section_data (section)->relocs == NULL) | |
3935 | free (internal_relocs); | |
3936 | goto error_ret_free_local; | |
3937 | } | |
3938 | ||
3939 | /* Only look for stubs on unconditional branch and | |
3940 | branch and link instructions. */ | |
a6bb11b2 YZ |
3941 | if (r_type != (unsigned int) AARCH64_R (CALL26) |
3942 | && r_type != (unsigned int) AARCH64_R (JUMP26)) | |
a06ea964 NC |
3943 | continue; |
3944 | ||
3945 | /* Now determine the call target, its name, value, | |
3946 | section. */ | |
3947 | sym_sec = NULL; | |
3948 | sym_value = 0; | |
3949 | destination = 0; | |
3950 | hash = NULL; | |
3951 | sym_name = NULL; | |
3952 | if (r_indx < symtab_hdr->sh_info) | |
3953 | { | |
3954 | /* It's a local symbol. */ | |
3955 | Elf_Internal_Sym *sym; | |
3956 | Elf_Internal_Shdr *hdr; | |
3957 | ||
3958 | if (local_syms == NULL) | |
3959 | { | |
3960 | local_syms | |
3961 | = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3962 | if (local_syms == NULL) | |
3963 | local_syms | |
3964 | = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
3965 | symtab_hdr->sh_info, 0, | |
3966 | NULL, NULL, NULL); | |
3967 | if (local_syms == NULL) | |
3968 | goto error_ret_free_internal; | |
3969 | } | |
3970 | ||
3971 | sym = local_syms + r_indx; | |
3972 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
3973 | sym_sec = hdr->bfd_section; | |
3974 | if (!sym_sec) | |
3975 | /* This is an undefined symbol. It can never | |
3976 | be resolved. */ | |
3977 | continue; | |
3978 | ||
3979 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
3980 | sym_value = sym->st_value; | |
3981 | destination = (sym_value + irela->r_addend | |
3982 | + sym_sec->output_offset | |
3983 | + sym_sec->output_section->vma); | |
3984 | st_type = ELF_ST_TYPE (sym->st_info); | |
3985 | sym_name | |
3986 | = bfd_elf_string_from_elf_section (input_bfd, | |
3987 | symtab_hdr->sh_link, | |
3988 | sym->st_name); | |
3989 | } | |
3990 | else | |
3991 | { | |
3992 | int e_indx; | |
3993 | ||
3994 | e_indx = r_indx - symtab_hdr->sh_info; | |
cec5225b | 3995 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
3996 | elf_sym_hashes (input_bfd)[e_indx]); |
3997 | ||
3998 | while (hash->root.root.type == bfd_link_hash_indirect | |
3999 | || hash->root.root.type == bfd_link_hash_warning) | |
cec5225b | 4000 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
4001 | hash->root.root.u.i.link); |
4002 | ||
4003 | if (hash->root.root.type == bfd_link_hash_defined | |
4004 | || hash->root.root.type == bfd_link_hash_defweak) | |
4005 | { | |
cec5225b YZ |
4006 | struct elf_aarch64_link_hash_table *globals = |
4007 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
4008 | sym_sec = hash->root.root.u.def.section; |
4009 | sym_value = hash->root.root.u.def.value; | |
4010 | /* For a destination in a shared library, | |
4011 | use the PLT stub as target address to | |
4012 | decide whether a branch stub is | |
4013 | needed. */ | |
4014 | if (globals->root.splt != NULL && hash != NULL | |
4015 | && hash->root.plt.offset != (bfd_vma) - 1) | |
4016 | { | |
4017 | sym_sec = globals->root.splt; | |
4018 | sym_value = hash->root.plt.offset; | |
4019 | if (sym_sec->output_section != NULL) | |
4020 | destination = (sym_value | |
4021 | + sym_sec->output_offset | |
4022 | + | |
4023 | sym_sec->output_section->vma); | |
4024 | } | |
4025 | else if (sym_sec->output_section != NULL) | |
4026 | destination = (sym_value + irela->r_addend | |
4027 | + sym_sec->output_offset | |
4028 | + sym_sec->output_section->vma); | |
4029 | } | |
4030 | else if (hash->root.root.type == bfd_link_hash_undefined | |
4031 | || (hash->root.root.type | |
4032 | == bfd_link_hash_undefweak)) | |
4033 | { | |
4034 | /* For a shared library, use the PLT stub as | |
4035 | target address to decide whether a long | |
4036 | branch stub is needed. | |
4037 | For absolute code, they cannot be handled. */ | |
cec5225b YZ |
4038 | struct elf_aarch64_link_hash_table *globals = |
4039 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
4040 | |
4041 | if (globals->root.splt != NULL && hash != NULL | |
4042 | && hash->root.plt.offset != (bfd_vma) - 1) | |
4043 | { | |
4044 | sym_sec = globals->root.splt; | |
4045 | sym_value = hash->root.plt.offset; | |
4046 | if (sym_sec->output_section != NULL) | |
4047 | destination = (sym_value | |
4048 | + sym_sec->output_offset | |
4049 | + | |
4050 | sym_sec->output_section->vma); | |
4051 | } | |
4052 | else | |
4053 | continue; | |
4054 | } | |
4055 | else | |
4056 | { | |
4057 | bfd_set_error (bfd_error_bad_value); | |
4058 | goto error_ret_free_internal; | |
4059 | } | |
4060 | st_type = ELF_ST_TYPE (hash->root.type); | |
4061 | sym_name = hash->root.root.root.string; | |
4062 | } | |
4063 | ||
4064 | /* Determine what (if any) linker stub is needed. */ | |
4065 | stub_type = aarch64_type_of_stub | |
f678ded7 | 4066 | (info, section, irela, sym_sec, st_type, hash, destination); |
a06ea964 NC |
4067 | if (stub_type == aarch64_stub_none) |
4068 | continue; | |
4069 | ||
4070 | /* Support for grouping stub sections. */ | |
4071 | id_sec = htab->stub_group[section->id].link_sec; | |
4072 | ||
4073 | /* Get the name of this stub. */ | |
cec5225b | 4074 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, hash, |
a06ea964 NC |
4075 | irela); |
4076 | if (!stub_name) | |
4077 | goto error_ret_free_internal; | |
4078 | ||
4079 | stub_entry = | |
4080 | aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
4081 | stub_name, FALSE, FALSE); | |
4082 | if (stub_entry != NULL) | |
4083 | { | |
4084 | /* The proper stub has already been created. */ | |
4085 | free (stub_name); | |
4086 | continue; | |
4087 | } | |
4088 | ||
ef857521 MS |
4089 | stub_entry = _bfd_aarch64_add_stub_entry_in_group |
4090 | (stub_name, section, htab); | |
a06ea964 NC |
4091 | if (stub_entry == NULL) |
4092 | { | |
4093 | free (stub_name); | |
4094 | goto error_ret_free_internal; | |
4095 | } | |
4096 | ||
4097 | stub_entry->target_value = sym_value; | |
4098 | stub_entry->target_section = sym_sec; | |
4099 | stub_entry->stub_type = stub_type; | |
4100 | stub_entry->h = hash; | |
4101 | stub_entry->st_type = st_type; | |
4102 | ||
4103 | if (sym_name == NULL) | |
4104 | sym_name = "unnamed"; | |
4105 | len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name); | |
4106 | stub_entry->output_name = bfd_alloc (htab->stub_bfd, len); | |
4107 | if (stub_entry->output_name == NULL) | |
4108 | { | |
4109 | free (stub_name); | |
4110 | goto error_ret_free_internal; | |
4111 | } | |
4112 | ||
4113 | snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME, | |
4114 | sym_name); | |
4115 | ||
4116 | stub_changed = TRUE; | |
4117 | } | |
4118 | ||
4119 | /* We're done with the internal relocs, free them. */ | |
4120 | if (elf_section_data (section)->relocs == NULL) | |
4121 | free (internal_relocs); | |
4122 | } | |
4123 | } | |
4124 | ||
4125 | if (!stub_changed) | |
4126 | break; | |
4127 | ||
13f622ec | 4128 | _bfd_aarch64_resize_stubs (htab); |
a06ea964 NC |
4129 | |
4130 | /* Ask the linker to do its stuff. */ | |
4131 | (*htab->layout_sections_again) (); | |
4132 | stub_changed = FALSE; | |
4133 | } | |
4134 | ||
4135 | return TRUE; | |
4136 | ||
4137 | error_ret_free_local: | |
4138 | return FALSE; | |
4139 | } | |
4140 | ||
4141 | /* Build all the stubs associated with the current output file. The | |
4142 | stubs are kept in a hash table attached to the main linker hash | |
4143 | table. We also set up the .plt entries for statically linked PIC | |
4144 | functions here. This function is called via aarch64_elf_finish in the | |
4145 | linker. */ | |
4146 | ||
4147 | bfd_boolean | |
cec5225b | 4148 | elfNN_aarch64_build_stubs (struct bfd_link_info *info) |
a06ea964 NC |
4149 | { |
4150 | asection *stub_sec; | |
4151 | struct bfd_hash_table *table; | |
cec5225b | 4152 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 4153 | |
cec5225b | 4154 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
4155 | |
4156 | for (stub_sec = htab->stub_bfd->sections; | |
4157 | stub_sec != NULL; stub_sec = stub_sec->next) | |
4158 | { | |
4159 | bfd_size_type size; | |
4160 | ||
4161 | /* Ignore non-stub sections. */ | |
4162 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
4163 | continue; | |
4164 | ||
4165 | /* Allocate memory to hold the linker stubs. */ | |
4166 | size = stub_sec->size; | |
4167 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); | |
4168 | if (stub_sec->contents == NULL && size != 0) | |
4169 | return FALSE; | |
4170 | stub_sec->size = 0; | |
61865519 MS |
4171 | |
4172 | bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents); | |
4173 | stub_sec->size += 4; | |
a06ea964 NC |
4174 | } |
4175 | ||
4176 | /* Build the stubs as directed by the stub hash table. */ | |
4177 | table = &htab->stub_hash_table; | |
4178 | bfd_hash_traverse (table, aarch64_build_one_stub, info); | |
4179 | ||
4180 | return TRUE; | |
4181 | } | |
4182 | ||
4183 | ||
4184 | /* Add an entry to the code/data map for section SEC. */ | |
4185 | ||
4186 | static void | |
cec5225b | 4187 | elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma) |
a06ea964 NC |
4188 | { |
4189 | struct _aarch64_elf_section_data *sec_data = | |
cec5225b | 4190 | elf_aarch64_section_data (sec); |
a06ea964 NC |
4191 | unsigned int newidx; |
4192 | ||
4193 | if (sec_data->map == NULL) | |
4194 | { | |
cec5225b | 4195 | sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
4196 | sec_data->mapcount = 0; |
4197 | sec_data->mapsize = 1; | |
4198 | } | |
4199 | ||
4200 | newidx = sec_data->mapcount++; | |
4201 | ||
4202 | if (sec_data->mapcount > sec_data->mapsize) | |
4203 | { | |
4204 | sec_data->mapsize *= 2; | |
4205 | sec_data->map = bfd_realloc_or_free | |
cec5225b | 4206 | (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
4207 | } |
4208 | ||
4209 | if (sec_data->map) | |
4210 | { | |
4211 | sec_data->map[newidx].vma = vma; | |
4212 | sec_data->map[newidx].type = type; | |
4213 | } | |
4214 | } | |
4215 | ||
4216 | ||
4217 | /* Initialise maps of insn/data for input BFDs. */ | |
4218 | void | |
cec5225b | 4219 | bfd_elfNN_aarch64_init_maps (bfd *abfd) |
a06ea964 NC |
4220 | { |
4221 | Elf_Internal_Sym *isymbuf; | |
4222 | Elf_Internal_Shdr *hdr; | |
4223 | unsigned int i, localsyms; | |
4224 | ||
4225 | /* Make sure that we are dealing with an AArch64 elf binary. */ | |
4226 | if (!is_aarch64_elf (abfd)) | |
4227 | return; | |
4228 | ||
4229 | if ((abfd->flags & DYNAMIC) != 0) | |
68fcca92 | 4230 | return; |
a06ea964 NC |
4231 | |
4232 | hdr = &elf_symtab_hdr (abfd); | |
4233 | localsyms = hdr->sh_info; | |
4234 | ||
4235 | /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field | |
4236 | should contain the number of local symbols, which should come before any | |
4237 | global symbols. Mapping symbols are always local. */ | |
4238 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL); | |
4239 | ||
4240 | /* No internal symbols read? Skip this BFD. */ | |
4241 | if (isymbuf == NULL) | |
4242 | return; | |
4243 | ||
4244 | for (i = 0; i < localsyms; i++) | |
4245 | { | |
4246 | Elf_Internal_Sym *isym = &isymbuf[i]; | |
4247 | asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4248 | const char *name; | |
4249 | ||
4250 | if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL) | |
4251 | { | |
4252 | name = bfd_elf_string_from_elf_section (abfd, | |
4253 | hdr->sh_link, | |
4254 | isym->st_name); | |
4255 | ||
4256 | if (bfd_is_aarch64_special_symbol_name | |
4257 | (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP)) | |
cec5225b | 4258 | elfNN_aarch64_section_map_add (sec, name[1], isym->st_value); |
a06ea964 NC |
4259 | } |
4260 | } | |
4261 | } | |
4262 | ||
4263 | /* Set option values needed during linking. */ | |
4264 | void | |
cec5225b | 4265 | bfd_elfNN_aarch64_set_options (struct bfd *output_bfd, |
a06ea964 NC |
4266 | struct bfd_link_info *link_info, |
4267 | int no_enum_warn, | |
68fcca92 | 4268 | int no_wchar_warn, int pic_veneer, |
4106101c MS |
4269 | int fix_erratum_835769, |
4270 | int fix_erratum_843419) | |
a06ea964 | 4271 | { |
cec5225b | 4272 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 4273 | |
cec5225b | 4274 | globals = elf_aarch64_hash_table (link_info); |
a06ea964 | 4275 | globals->pic_veneer = pic_veneer; |
68fcca92 | 4276 | globals->fix_erratum_835769 = fix_erratum_835769; |
4106101c MS |
4277 | globals->fix_erratum_843419 = fix_erratum_843419; |
4278 | globals->fix_erratum_843419_adr = TRUE; | |
a06ea964 NC |
4279 | |
4280 | BFD_ASSERT (is_aarch64_elf (output_bfd)); | |
4281 | elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn; | |
4282 | elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn; | |
4283 | } | |
4284 | ||
a06ea964 NC |
4285 | static bfd_vma |
4286 | aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h, | |
cec5225b | 4287 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
4288 | *globals, struct bfd_link_info *info, |
4289 | bfd_vma value, bfd *output_bfd, | |
4290 | bfd_boolean *unresolved_reloc_p) | |
4291 | { | |
4292 | bfd_vma off = (bfd_vma) - 1; | |
4293 | asection *basegot = globals->root.sgot; | |
4294 | bfd_boolean dyn = globals->root.dynamic_sections_created; | |
4295 | ||
4296 | if (h != NULL) | |
4297 | { | |
a6bb11b2 | 4298 | BFD_ASSERT (basegot != NULL); |
a06ea964 NC |
4299 | off = h->got.offset; |
4300 | BFD_ASSERT (off != (bfd_vma) - 1); | |
0e1862bb L |
4301 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h) |
4302 | || (bfd_link_pic (info) | |
a06ea964 NC |
4303 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
4304 | || (ELF_ST_VISIBILITY (h->other) | |
4305 | && h->root.type == bfd_link_hash_undefweak)) | |
4306 | { | |
4307 | /* This is actually a static link, or it is a -Bsymbolic link | |
4308 | and the symbol is defined locally. We must initialize this | |
4309 | entry in the global offset table. Since the offset must | |
a6bb11b2 YZ |
4310 | always be a multiple of 8 (4 in the case of ILP32), we use |
4311 | the least significant bit to record whether we have | |
4312 | initialized it already. | |
a06ea964 NC |
4313 | When doing a dynamic link, we create a .rel(a).got relocation |
4314 | entry to initialize the value. This is done in the | |
4315 | finish_dynamic_symbol routine. */ | |
4316 | if ((off & 1) != 0) | |
4317 | off &= ~1; | |
4318 | else | |
4319 | { | |
cec5225b | 4320 | bfd_put_NN (output_bfd, value, basegot->contents + off); |
a06ea964 NC |
4321 | h->got.offset |= 1; |
4322 | } | |
4323 | } | |
4324 | else | |
4325 | *unresolved_reloc_p = FALSE; | |
4326 | ||
4327 | off = off + basegot->output_section->vma + basegot->output_offset; | |
4328 | } | |
4329 | ||
4330 | return off; | |
4331 | } | |
4332 | ||
4333 | /* Change R_TYPE to a more efficient access model where possible, | |
4334 | return the new reloc type. */ | |
4335 | ||
a6bb11b2 YZ |
4336 | static bfd_reloc_code_real_type |
4337 | aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type, | |
a06ea964 NC |
4338 | struct elf_link_hash_entry *h) |
4339 | { | |
4340 | bfd_boolean is_local = h == NULL; | |
a6bb11b2 | 4341 | |
a06ea964 NC |
4342 | switch (r_type) |
4343 | { | |
a6bb11b2 | 4344 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 4345 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a6bb11b2 YZ |
4346 | return (is_local |
4347 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4348 | : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21); | |
4349 | ||
389b8029 MS |
4350 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
4351 | return (is_local | |
4352 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4353 | : r_type); | |
4354 | ||
1ada945d MS |
4355 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
4356 | return (is_local | |
4357 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4358 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4359 | ||
a6bb11b2 | 4360 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
ce336788 | 4361 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 YZ |
4362 | return (is_local |
4363 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4364 | : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC); | |
4365 | ||
4366 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: | |
4367 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type; | |
4368 | ||
4369 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
4370 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type; | |
4371 | ||
043bf05a MS |
4372 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
4373 | return r_type; | |
4374 | ||
3c12b054 MS |
4375 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
4376 | return (is_local | |
4377 | ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 | |
4378 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4379 | ||
a6bb11b2 YZ |
4380 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
4381 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
a06ea964 | 4382 | /* Instructions with these relocations will become NOPs. */ |
a6bb11b2 YZ |
4383 | return BFD_RELOC_AARCH64_NONE; |
4384 | ||
4385 | default: | |
4386 | break; | |
a06ea964 NC |
4387 | } |
4388 | ||
4389 | return r_type; | |
4390 | } | |
4391 | ||
4392 | static unsigned int | |
a6bb11b2 | 4393 | aarch64_reloc_got_type (bfd_reloc_code_real_type r_type) |
a06ea964 NC |
4394 | { |
4395 | switch (r_type) | |
4396 | { | |
a6bb11b2 YZ |
4397 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
4398 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 4399 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 4400 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 4401 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 4402 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
a06ea964 NC |
4403 | return GOT_NORMAL; |
4404 | ||
ce336788 | 4405 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 4406 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 4407 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
73f925cc | 4408 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 4409 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 4410 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
4411 | return GOT_TLS_GD; |
4412 | ||
a6bb11b2 YZ |
4413 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
4414 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
389b8029 | 4415 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 4416 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a6bb11b2 | 4417 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
ce336788 | 4418 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: |
1ada945d | 4419 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
4420 | return GOT_TLSDESC_GD; |
4421 | ||
a6bb11b2 | 4422 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 4423 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 4424 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 4425 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
a06ea964 NC |
4426 | return GOT_TLS_IE; |
4427 | ||
a6bb11b2 YZ |
4428 | default: |
4429 | break; | |
a06ea964 NC |
4430 | } |
4431 | return GOT_UNKNOWN; | |
4432 | } | |
4433 | ||
4434 | static bfd_boolean | |
4435 | aarch64_can_relax_tls (bfd *input_bfd, | |
4436 | struct bfd_link_info *info, | |
a6bb11b2 | 4437 | bfd_reloc_code_real_type r_type, |
a06ea964 NC |
4438 | struct elf_link_hash_entry *h, |
4439 | unsigned long r_symndx) | |
4440 | { | |
4441 | unsigned int symbol_got_type; | |
4442 | unsigned int reloc_got_type; | |
4443 | ||
9331eea1 | 4444 | if (! IS_AARCH64_TLS_RELAX_RELOC (r_type)) |
a06ea964 NC |
4445 | return FALSE; |
4446 | ||
cec5225b | 4447 | symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx); |
a06ea964 NC |
4448 | reloc_got_type = aarch64_reloc_got_type (r_type); |
4449 | ||
4450 | if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type)) | |
4451 | return TRUE; | |
4452 | ||
0e1862bb | 4453 | if (bfd_link_pic (info)) |
a06ea964 NC |
4454 | return FALSE; |
4455 | ||
4456 | if (h && h->root.type == bfd_link_hash_undefweak) | |
4457 | return FALSE; | |
4458 | ||
4459 | return TRUE; | |
4460 | } | |
4461 | ||
a6bb11b2 YZ |
4462 | /* Given the relocation code R_TYPE, return the relaxed bfd reloc |
4463 | enumerator. */ | |
4464 | ||
4465 | static bfd_reloc_code_real_type | |
a06ea964 NC |
4466 | aarch64_tls_transition (bfd *input_bfd, |
4467 | struct bfd_link_info *info, | |
4468 | unsigned int r_type, | |
4469 | struct elf_link_hash_entry *h, | |
4470 | unsigned long r_symndx) | |
4471 | { | |
a6bb11b2 YZ |
4472 | bfd_reloc_code_real_type bfd_r_type |
4473 | = elfNN_aarch64_bfd_reloc_from_type (r_type); | |
a06ea964 | 4474 | |
a6bb11b2 YZ |
4475 | if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx)) |
4476 | return bfd_r_type; | |
4477 | ||
4478 | return aarch64_tls_transition_without_check (bfd_r_type, h); | |
a06ea964 NC |
4479 | } |
4480 | ||
4481 | /* Return the base VMA address which should be subtracted from real addresses | |
a6bb11b2 | 4482 | when resolving R_AARCH64_TLS_DTPREL relocation. */ |
a06ea964 NC |
4483 | |
4484 | static bfd_vma | |
4485 | dtpoff_base (struct bfd_link_info *info) | |
4486 | { | |
4487 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
4488 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); | |
4489 | return elf_hash_table (info)->tls_sec->vma; | |
4490 | } | |
4491 | ||
a06ea964 NC |
4492 | /* Return the base VMA address which should be subtracted from real addresses |
4493 | when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */ | |
4494 | ||
4495 | static bfd_vma | |
4496 | tpoff_base (struct bfd_link_info *info) | |
4497 | { | |
4498 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
4499 | ||
4500 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
ac21917f | 4501 | BFD_ASSERT (htab->tls_sec != NULL); |
a06ea964 NC |
4502 | |
4503 | bfd_vma base = align_power ((bfd_vma) TCB_SIZE, | |
4504 | htab->tls_sec->alignment_power); | |
4505 | return htab->tls_sec->vma - base; | |
4506 | } | |
4507 | ||
4508 | static bfd_vma * | |
4509 | symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4510 | unsigned long r_symndx) | |
4511 | { | |
4512 | /* Calculate the address of the GOT entry for symbol | |
4513 | referred to in h. */ | |
4514 | if (h != NULL) | |
4515 | return &h->got.offset; | |
4516 | else | |
4517 | { | |
4518 | /* local symbol */ | |
4519 | struct elf_aarch64_local_symbol *l; | |
4520 | ||
cec5225b | 4521 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
4522 | return &l[r_symndx].got_offset; |
4523 | } | |
4524 | } | |
4525 | ||
4526 | static void | |
4527 | symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4528 | unsigned long r_symndx) | |
4529 | { | |
4530 | bfd_vma *p; | |
4531 | p = symbol_got_offset_ref (input_bfd, h, r_symndx); | |
4532 | *p |= 1; | |
4533 | } | |
4534 | ||
4535 | static int | |
4536 | symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4537 | unsigned long r_symndx) | |
4538 | { | |
4539 | bfd_vma value; | |
4540 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
4541 | return value & 1; | |
4542 | } | |
4543 | ||
4544 | static bfd_vma | |
4545 | symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4546 | unsigned long r_symndx) | |
4547 | { | |
4548 | bfd_vma value; | |
4549 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
4550 | value &= ~1; | |
4551 | return value; | |
4552 | } | |
4553 | ||
4554 | static bfd_vma * | |
4555 | symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4556 | unsigned long r_symndx) | |
4557 | { | |
4558 | /* Calculate the address of the GOT entry for symbol | |
4559 | referred to in h. */ | |
4560 | if (h != NULL) | |
4561 | { | |
cec5225b YZ |
4562 | struct elf_aarch64_link_hash_entry *eh; |
4563 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
4564 | return &eh->tlsdesc_got_jump_table_offset; |
4565 | } | |
4566 | else | |
4567 | { | |
4568 | /* local symbol */ | |
4569 | struct elf_aarch64_local_symbol *l; | |
4570 | ||
cec5225b | 4571 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
4572 | return &l[r_symndx].tlsdesc_got_jump_table_offset; |
4573 | } | |
4574 | } | |
4575 | ||
4576 | static void | |
4577 | symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4578 | unsigned long r_symndx) | |
4579 | { | |
4580 | bfd_vma *p; | |
4581 | p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
4582 | *p |= 1; | |
4583 | } | |
4584 | ||
4585 | static int | |
4586 | symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd, | |
4587 | struct elf_link_hash_entry *h, | |
4588 | unsigned long r_symndx) | |
4589 | { | |
4590 | bfd_vma value; | |
4591 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
4592 | return value & 1; | |
4593 | } | |
4594 | ||
4595 | static bfd_vma | |
4596 | symbol_tlsdesc_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4597 | unsigned long r_symndx) | |
4598 | { | |
4599 | bfd_vma value; | |
4600 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
4601 | value &= ~1; | |
4602 | return value; | |
4603 | } | |
4604 | ||
68fcca92 JW |
4605 | /* Data for make_branch_to_erratum_835769_stub(). */ |
4606 | ||
4607 | struct erratum_835769_branch_to_stub_data | |
4608 | { | |
4106101c | 4609 | struct bfd_link_info *info; |
68fcca92 JW |
4610 | asection *output_section; |
4611 | bfd_byte *contents; | |
4612 | }; | |
4613 | ||
4614 | /* Helper to insert branches to erratum 835769 stubs in the right | |
4615 | places for a particular section. */ | |
4616 | ||
4617 | static bfd_boolean | |
4618 | make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry, | |
4619 | void *in_arg) | |
4620 | { | |
4621 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
4622 | struct erratum_835769_branch_to_stub_data *data; | |
4623 | bfd_byte *contents; | |
4624 | unsigned long branch_insn = 0; | |
4625 | bfd_vma veneered_insn_loc, veneer_entry_loc; | |
4626 | bfd_signed_vma branch_offset; | |
4627 | unsigned int target; | |
4628 | bfd *abfd; | |
4629 | ||
4630 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
4631 | data = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
4632 | ||
4633 | if (stub_entry->target_section != data->output_section | |
4634 | || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer) | |
4635 | return TRUE; | |
4636 | ||
4637 | contents = data->contents; | |
4638 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
4639 | + stub_entry->target_section->output_offset | |
4640 | + stub_entry->target_value; | |
4641 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
4642 | + stub_entry->stub_sec->output_offset | |
4643 | + stub_entry->stub_offset; | |
4644 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
4645 | ||
4646 | abfd = stub_entry->target_section->owner; | |
4647 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4648 | (*_bfd_error_handler) | |
4649 | (_("%B: error: Erratum 835769 stub out " | |
4650 | "of range (input file too large)"), abfd); | |
4651 | ||
4652 | target = stub_entry->target_value; | |
4653 | branch_insn = 0x14000000; | |
4654 | branch_offset >>= 2; | |
4655 | branch_offset &= 0x3ffffff; | |
4656 | branch_insn |= branch_offset; | |
4657 | bfd_putl32 (branch_insn, &contents[target]); | |
4658 | ||
4659 | return TRUE; | |
4660 | } | |
4661 | ||
4106101c MS |
4662 | |
4663 | static bfd_boolean | |
4664 | _bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry, | |
4665 | void *in_arg) | |
4666 | { | |
4667 | struct elf_aarch64_stub_hash_entry *stub_entry | |
4668 | = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
4669 | struct erratum_835769_branch_to_stub_data *data | |
4670 | = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
4671 | struct bfd_link_info *info; | |
4672 | struct elf_aarch64_link_hash_table *htab; | |
4673 | bfd_byte *contents; | |
4674 | asection *section; | |
4675 | bfd *abfd; | |
4676 | bfd_vma place; | |
4677 | uint32_t insn; | |
4678 | ||
4679 | info = data->info; | |
4680 | contents = data->contents; | |
4681 | section = data->output_section; | |
4682 | ||
4683 | htab = elf_aarch64_hash_table (info); | |
4684 | ||
4685 | if (stub_entry->target_section != section | |
4686 | || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer) | |
4687 | return TRUE; | |
4688 | ||
4689 | insn = bfd_getl32 (contents + stub_entry->target_value); | |
4690 | bfd_putl32 (insn, | |
4691 | stub_entry->stub_sec->contents + stub_entry->stub_offset); | |
4692 | ||
4693 | place = (section->output_section->vma + section->output_offset | |
4694 | + stub_entry->adrp_offset); | |
4695 | insn = bfd_getl32 (contents + stub_entry->adrp_offset); | |
4696 | ||
4697 | if ((insn & AARCH64_ADRP_OP_MASK) != AARCH64_ADRP_OP) | |
4698 | abort (); | |
4699 | ||
4700 | bfd_signed_vma imm = | |
4701 | (_bfd_aarch64_sign_extend | |
4702 | ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33) | |
4703 | - (place & 0xfff)); | |
4704 | ||
4705 | if (htab->fix_erratum_843419_adr | |
4706 | && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM)) | |
4707 | { | |
4708 | insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm) | |
4709 | | AARCH64_RT (insn)); | |
4710 | bfd_putl32 (insn, contents + stub_entry->adrp_offset); | |
4711 | } | |
4712 | else | |
4713 | { | |
4714 | bfd_vma veneered_insn_loc; | |
4715 | bfd_vma veneer_entry_loc; | |
4716 | bfd_signed_vma branch_offset; | |
4717 | uint32_t branch_insn; | |
4718 | ||
4719 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
4720 | + stub_entry->target_section->output_offset | |
4721 | + stub_entry->target_value; | |
4722 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
4723 | + stub_entry->stub_sec->output_offset | |
4724 | + stub_entry->stub_offset; | |
4725 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
4726 | ||
4727 | abfd = stub_entry->target_section->owner; | |
4728 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4729 | (*_bfd_error_handler) | |
4730 | (_("%B: error: Erratum 843419 stub out " | |
4731 | "of range (input file too large)"), abfd); | |
4732 | ||
4733 | branch_insn = 0x14000000; | |
4734 | branch_offset >>= 2; | |
4735 | branch_offset &= 0x3ffffff; | |
4736 | branch_insn |= branch_offset; | |
4737 | bfd_putl32 (branch_insn, contents + stub_entry->target_value); | |
4738 | } | |
4739 | return TRUE; | |
4740 | } | |
4741 | ||
4742 | ||
68fcca92 JW |
4743 | static bfd_boolean |
4744 | elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, | |
4745 | struct bfd_link_info *link_info, | |
4746 | asection *sec, | |
4747 | bfd_byte *contents) | |
4748 | ||
4749 | { | |
4750 | struct elf_aarch64_link_hash_table *globals = | |
f872121a | 4751 | elf_aarch64_hash_table (link_info); |
68fcca92 JW |
4752 | |
4753 | if (globals == NULL) | |
4754 | return FALSE; | |
4755 | ||
4756 | /* Fix code to point to erratum 835769 stubs. */ | |
4757 | if (globals->fix_erratum_835769) | |
4758 | { | |
4759 | struct erratum_835769_branch_to_stub_data data; | |
4760 | ||
4106101c | 4761 | data.info = link_info; |
68fcca92 JW |
4762 | data.output_section = sec; |
4763 | data.contents = contents; | |
4764 | bfd_hash_traverse (&globals->stub_hash_table, | |
4765 | make_branch_to_erratum_835769_stub, &data); | |
4766 | } | |
4767 | ||
4106101c MS |
4768 | if (globals->fix_erratum_843419) |
4769 | { | |
4770 | struct erratum_835769_branch_to_stub_data data; | |
4771 | ||
4772 | data.info = link_info; | |
4773 | data.output_section = sec; | |
4774 | data.contents = contents; | |
4775 | bfd_hash_traverse (&globals->stub_hash_table, | |
4776 | _bfd_aarch64_erratum_843419_branch_to_stub, &data); | |
4777 | } | |
4778 | ||
68fcca92 JW |
4779 | return FALSE; |
4780 | } | |
4781 | ||
a06ea964 NC |
4782 | /* Perform a relocation as part of a final link. */ |
4783 | static bfd_reloc_status_type | |
cec5225b | 4784 | elfNN_aarch64_final_link_relocate (reloc_howto_type *howto, |
a06ea964 NC |
4785 | bfd *input_bfd, |
4786 | bfd *output_bfd, | |
4787 | asection *input_section, | |
4788 | bfd_byte *contents, | |
4789 | Elf_Internal_Rela *rel, | |
4790 | bfd_vma value, | |
4791 | struct bfd_link_info *info, | |
4792 | asection *sym_sec, | |
4793 | struct elf_link_hash_entry *h, | |
4794 | bfd_boolean *unresolved_reloc_p, | |
4795 | bfd_boolean save_addend, | |
1419bbe5 WN |
4796 | bfd_vma *saved_addend, |
4797 | Elf_Internal_Sym *sym) | |
a06ea964 | 4798 | { |
1419bbe5 | 4799 | Elf_Internal_Shdr *symtab_hdr; |
a06ea964 | 4800 | unsigned int r_type = howto->type; |
a6bb11b2 YZ |
4801 | bfd_reloc_code_real_type bfd_r_type |
4802 | = elfNN_aarch64_bfd_reloc_from_howto (howto); | |
4803 | bfd_reloc_code_real_type new_bfd_r_type; | |
a06ea964 NC |
4804 | unsigned long r_symndx; |
4805 | bfd_byte *hit_data = contents + rel->r_offset; | |
b53b1bed | 4806 | bfd_vma place, off; |
a06ea964 | 4807 | bfd_signed_vma signed_addend; |
cec5225b | 4808 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 4809 | bfd_boolean weak_undef_p; |
b53b1bed | 4810 | asection *base_got; |
a06ea964 | 4811 | |
cec5225b | 4812 | globals = elf_aarch64_hash_table (info); |
a06ea964 | 4813 | |
1419bbe5 WN |
4814 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
4815 | ||
a06ea964 NC |
4816 | BFD_ASSERT (is_aarch64_elf (input_bfd)); |
4817 | ||
cec5225b | 4818 | r_symndx = ELFNN_R_SYM (rel->r_info); |
a06ea964 NC |
4819 | |
4820 | /* It is possible to have linker relaxations on some TLS access | |
4821 | models. Update our information here. */ | |
a6bb11b2 YZ |
4822 | new_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, h, r_symndx); |
4823 | if (new_bfd_r_type != bfd_r_type) | |
4824 | { | |
4825 | bfd_r_type = new_bfd_r_type; | |
4826 | howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type); | |
4827 | BFD_ASSERT (howto != NULL); | |
4828 | r_type = howto->type; | |
4829 | } | |
a06ea964 NC |
4830 | |
4831 | place = input_section->output_section->vma | |
4832 | + input_section->output_offset + rel->r_offset; | |
4833 | ||
4834 | /* Get addend, accumulating the addend for consecutive relocs | |
4835 | which refer to the same offset. */ | |
4836 | signed_addend = saved_addend ? *saved_addend : 0; | |
4837 | signed_addend += rel->r_addend; | |
4838 | ||
4839 | weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak | |
4840 | : bfd_is_und_section (sym_sec)); | |
a6bb11b2 | 4841 | |
1419bbe5 WN |
4842 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
4843 | it here if it is defined in a non-shared object. */ | |
4844 | if (h != NULL | |
4845 | && h->type == STT_GNU_IFUNC | |
4846 | && h->def_regular) | |
4847 | { | |
4848 | asection *plt; | |
4849 | const char *name; | |
99ad26cb | 4850 | bfd_vma addend = 0; |
1419bbe5 WN |
4851 | |
4852 | if ((input_section->flags & SEC_ALLOC) == 0 | |
4853 | || h->plt.offset == (bfd_vma) -1) | |
4854 | abort (); | |
4855 | ||
4856 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
4857 | plt = globals->root.splt ? globals->root.splt : globals->root.iplt; | |
4858 | value = (plt->output_section->vma + plt->output_offset + h->plt.offset); | |
4859 | ||
4860 | switch (bfd_r_type) | |
4861 | { | |
4862 | default: | |
4863 | if (h->root.root.string) | |
4864 | name = h->root.root.string; | |
4865 | else | |
4866 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
4867 | NULL); | |
4868 | (*_bfd_error_handler) | |
4869 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
4870 | "symbol `%s' isn't handled by %s"), input_bfd, | |
4871 | howto->name, name, __FUNCTION__); | |
4872 | bfd_set_error (bfd_error_bad_value); | |
4873 | return FALSE; | |
4874 | ||
4875 | case BFD_RELOC_AARCH64_NN: | |
4876 | if (rel->r_addend != 0) | |
4877 | { | |
4878 | if (h->root.root.string) | |
4879 | name = h->root.root.string; | |
4880 | else | |
4881 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
4882 | sym, NULL); | |
4883 | (*_bfd_error_handler) | |
4884 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
4885 | "symbol `%s' has non-zero addend: %d"), | |
4886 | input_bfd, howto->name, name, rel->r_addend); | |
4887 | bfd_set_error (bfd_error_bad_value); | |
4888 | return FALSE; | |
4889 | } | |
4890 | ||
4891 | /* Generate dynamic relocation only when there is a | |
4892 | non-GOT reference in a shared object. */ | |
0e1862bb | 4893 | if (bfd_link_pic (info) && h->non_got_ref) |
1419bbe5 WN |
4894 | { |
4895 | Elf_Internal_Rela outrel; | |
4896 | asection *sreloc; | |
4897 | ||
4898 | /* Need a dynamic relocation to get the real function | |
4899 | address. */ | |
4900 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
4901 | info, | |
4902 | input_section, | |
4903 | rel->r_offset); | |
4904 | if (outrel.r_offset == (bfd_vma) -1 | |
4905 | || outrel.r_offset == (bfd_vma) -2) | |
4906 | abort (); | |
4907 | ||
4908 | outrel.r_offset += (input_section->output_section->vma | |
4909 | + input_section->output_offset); | |
4910 | ||
4911 | if (h->dynindx == -1 | |
4912 | || h->forced_local | |
0e1862bb | 4913 | || bfd_link_executable (info)) |
1419bbe5 WN |
4914 | { |
4915 | /* This symbol is resolved locally. */ | |
4916 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
4917 | outrel.r_addend = (h->root.u.def.value | |
4918 | + h->root.u.def.section->output_section->vma | |
4919 | + h->root.u.def.section->output_offset); | |
4920 | } | |
4921 | else | |
4922 | { | |
4923 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); | |
4924 | outrel.r_addend = 0; | |
4925 | } | |
4926 | ||
4927 | sreloc = globals->root.irelifunc; | |
4928 | elf_append_rela (output_bfd, sreloc, &outrel); | |
4929 | ||
4930 | /* If this reloc is against an external symbol, we | |
4931 | do not want to fiddle with the addend. Otherwise, | |
4932 | we need to include the symbol value so that it | |
4933 | becomes an addend for the dynamic reloc. For an | |
4934 | internal symbol, we have updated addend. */ | |
4935 | return bfd_reloc_ok; | |
4936 | } | |
4937 | /* FALLTHROUGH */ | |
1419bbe5 | 4938 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 4939 | case BFD_RELOC_AARCH64_JUMP26: |
1419bbe5 WN |
4940 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
4941 | signed_addend, | |
4942 | weak_undef_p); | |
4943 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, | |
4944 | howto, value); | |
1419bbe5 WN |
4945 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
4946 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 4947 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 4948 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 4949 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 4950 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
1419bbe5 WN |
4951 | base_got = globals->root.sgot; |
4952 | off = h->got.offset; | |
4953 | ||
4954 | if (base_got == NULL) | |
4955 | abort (); | |
4956 | ||
4957 | if (off == (bfd_vma) -1) | |
4958 | { | |
4959 | bfd_vma plt_index; | |
4960 | ||
4961 | /* We can't use h->got.offset here to save state, or | |
4962 | even just remember the offset, as finish_dynamic_symbol | |
4963 | would use that as offset into .got. */ | |
4964 | ||
4965 | if (globals->root.splt != NULL) | |
4966 | { | |
b1ee0cc4 WN |
4967 | plt_index = ((h->plt.offset - globals->plt_header_size) / |
4968 | globals->plt_entry_size); | |
1419bbe5 WN |
4969 | off = (plt_index + 3) * GOT_ENTRY_SIZE; |
4970 | base_got = globals->root.sgotplt; | |
4971 | } | |
4972 | else | |
4973 | { | |
4974 | plt_index = h->plt.offset / globals->plt_entry_size; | |
4975 | off = plt_index * GOT_ENTRY_SIZE; | |
4976 | base_got = globals->root.igotplt; | |
4977 | } | |
4978 | ||
4979 | if (h->dynindx == -1 | |
4980 | || h->forced_local | |
4981 | || info->symbolic) | |
4982 | { | |
4983 | /* This references the local definition. We must | |
4984 | initialize this entry in the global offset table. | |
4985 | Since the offset must always be a multiple of 8, | |
4986 | we use the least significant bit to record | |
4987 | whether we have initialized it already. | |
4988 | ||
4989 | When doing a dynamic link, we create a .rela.got | |
4990 | relocation entry to initialize the value. This | |
4991 | is done in the finish_dynamic_symbol routine. */ | |
4992 | if ((off & 1) != 0) | |
4993 | off &= ~1; | |
4994 | else | |
4995 | { | |
4996 | bfd_put_NN (output_bfd, value, | |
4997 | base_got->contents + off); | |
4998 | /* Note that this is harmless as -1 | 1 still is -1. */ | |
4999 | h->got.offset |= 1; | |
5000 | } | |
5001 | } | |
5002 | value = (base_got->output_section->vma | |
5003 | + base_got->output_offset + off); | |
5004 | } | |
5005 | else | |
5006 | value = aarch64_calculate_got_entry_vma (h, globals, info, | |
5007 | value, output_bfd, | |
5008 | unresolved_reloc_p); | |
7018c030 JW |
5009 | if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
5010 | || bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
99ad26cb JW |
5011 | addend = (globals->root.sgot->output_section->vma |
5012 | + globals->root.sgot->output_offset); | |
1419bbe5 | 5013 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
99ad26cb | 5014 | addend, weak_undef_p); |
1419bbe5 | 5015 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value); |
1419bbe5 | 5016 | case BFD_RELOC_AARCH64_ADD_LO12: |
ce336788 | 5017 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: |
1419bbe5 WN |
5018 | break; |
5019 | } | |
5020 | } | |
5021 | ||
a6bb11b2 | 5022 | switch (bfd_r_type) |
a06ea964 | 5023 | { |
a6bb11b2 YZ |
5024 | case BFD_RELOC_AARCH64_NONE: |
5025 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
a06ea964 NC |
5026 | *unresolved_reloc_p = FALSE; |
5027 | return bfd_reloc_ok; | |
5028 | ||
a6bb11b2 | 5029 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
5030 | |
5031 | /* When generating a shared object or relocatable executable, these | |
5032 | relocations are copied into the output file to be resolved at | |
5033 | run time. */ | |
0e1862bb L |
5034 | if (((bfd_link_pic (info) == TRUE) |
5035 | || globals->root.is_relocatable_executable) | |
a06ea964 NC |
5036 | && (input_section->flags & SEC_ALLOC) |
5037 | && (h == NULL | |
5038 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5039 | || h->root.type != bfd_link_hash_undefweak)) | |
5040 | { | |
5041 | Elf_Internal_Rela outrel; | |
5042 | bfd_byte *loc; | |
5043 | bfd_boolean skip, relocate; | |
5044 | asection *sreloc; | |
5045 | ||
5046 | *unresolved_reloc_p = FALSE; | |
5047 | ||
a06ea964 NC |
5048 | skip = FALSE; |
5049 | relocate = FALSE; | |
5050 | ||
5051 | outrel.r_addend = signed_addend; | |
5052 | outrel.r_offset = | |
5053 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
5054 | rel->r_offset); | |
5055 | if (outrel.r_offset == (bfd_vma) - 1) | |
5056 | skip = TRUE; | |
5057 | else if (outrel.r_offset == (bfd_vma) - 2) | |
5058 | { | |
5059 | skip = TRUE; | |
5060 | relocate = TRUE; | |
5061 | } | |
5062 | ||
5063 | outrel.r_offset += (input_section->output_section->vma | |
5064 | + input_section->output_offset); | |
5065 | ||
5066 | if (skip) | |
5067 | memset (&outrel, 0, sizeof outrel); | |
5068 | else if (h != NULL | |
5069 | && h->dynindx != -1 | |
0e1862bb L |
5070 | && (!bfd_link_pic (info) |
5071 | || !SYMBOLIC_BIND (info, h) | |
5072 | || !h->def_regular)) | |
cec5225b | 5073 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); |
a06ea964 NC |
5074 | else |
5075 | { | |
5076 | int symbol; | |
5077 | ||
5078 | /* On SVR4-ish systems, the dynamic loader cannot | |
5079 | relocate the text and data segments independently, | |
5080 | so the symbol does not matter. */ | |
5081 | symbol = 0; | |
a6bb11b2 | 5082 | outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE)); |
a06ea964 NC |
5083 | outrel.r_addend += value; |
5084 | } | |
5085 | ||
1419bbe5 WN |
5086 | sreloc = elf_section_data (input_section)->sreloc; |
5087 | if (sreloc == NULL || sreloc->contents == NULL) | |
5088 | return bfd_reloc_notsupported; | |
5089 | ||
5090 | loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals); | |
cec5225b | 5091 | bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc); |
a06ea964 | 5092 | |
1419bbe5 | 5093 | if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size) |
a06ea964 NC |
5094 | { |
5095 | /* Sanity to check that we have previously allocated | |
5096 | sufficient space in the relocation section for the | |
5097 | number of relocations we actually want to emit. */ | |
5098 | abort (); | |
5099 | } | |
5100 | ||
5101 | /* If this reloc is against an external symbol, we do not want to | |
5102 | fiddle with the addend. Otherwise, we need to include the symbol | |
5103 | value so that it becomes an addend for the dynamic reloc. */ | |
5104 | if (!relocate) | |
5105 | return bfd_reloc_ok; | |
5106 | ||
5107 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5108 | contents, rel->r_offset, value, | |
5109 | signed_addend); | |
5110 | } | |
5111 | else | |
5112 | value += signed_addend; | |
5113 | break; | |
5114 | ||
a6bb11b2 | 5115 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 5116 | case BFD_RELOC_AARCH64_JUMP26: |
a06ea964 NC |
5117 | { |
5118 | asection *splt = globals->root.splt; | |
5119 | bfd_boolean via_plt_p = | |
5120 | splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1; | |
5121 | ||
5122 | /* A call to an undefined weak symbol is converted to a jump to | |
5123 | the next instruction unless a PLT entry will be created. | |
5124 | The jump to the next instruction is optimized as a NOP. | |
5125 | Do the same for local undefined symbols. */ | |
5126 | if (weak_undef_p && ! via_plt_p) | |
5127 | { | |
5128 | bfd_putl32 (INSN_NOP, hit_data); | |
5129 | return bfd_reloc_ok; | |
5130 | } | |
5131 | ||
5132 | /* If the call goes through a PLT entry, make sure to | |
5133 | check distance to the right destination address. */ | |
5134 | if (via_plt_p) | |
07f9ddfe JW |
5135 | value = (splt->output_section->vma |
5136 | + splt->output_offset + h->plt.offset); | |
5137 | ||
5138 | /* Check if a stub has to be inserted because the destination | |
5139 | is too far away. */ | |
5140 | struct elf_aarch64_stub_hash_entry *stub_entry = NULL; | |
5141 | if (! aarch64_valid_branch_p (value, place)) | |
5142 | /* The target is out of reach, so redirect the branch to | |
5143 | the local stub for this function. */ | |
5144 | stub_entry = elfNN_aarch64_get_stub_entry (input_section, sym_sec, h, | |
5145 | rel, globals); | |
5146 | if (stub_entry != NULL) | |
5147 | value = (stub_entry->stub_offset | |
5148 | + stub_entry->stub_sec->output_offset | |
5149 | + stub_entry->stub_sec->output_section->vma); | |
a06ea964 | 5150 | } |
caed7120 YZ |
5151 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5152 | signed_addend, weak_undef_p); | |
07f9ddfe | 5153 | *unresolved_reloc_p = FALSE; |
a06ea964 NC |
5154 | break; |
5155 | ||
dcbd20eb JW |
5156 | case BFD_RELOC_AARCH64_16_PCREL: |
5157 | case BFD_RELOC_AARCH64_32_PCREL: | |
5158 | case BFD_RELOC_AARCH64_64_PCREL: | |
ce336788 JW |
5159 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
5160 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
5161 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
5162 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
0e1862bb | 5163 | if (bfd_link_pic (info) |
dcbd20eb JW |
5164 | && (input_section->flags & SEC_ALLOC) != 0 |
5165 | && (input_section->flags & SEC_READONLY) != 0 | |
5166 | && h != NULL | |
5167 | && !h->def_regular) | |
5168 | { | |
5169 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
5170 | ||
5171 | (*_bfd_error_handler) | |
5172 | (_("%B: relocation %s against external symbol `%s' can not be used" | |
5173 | " when making a shared object; recompile with -fPIC"), | |
5174 | input_bfd, elfNN_aarch64_howto_table[howto_index].name, | |
5175 | h->root.root.string); | |
5176 | bfd_set_error (bfd_error_bad_value); | |
5177 | return FALSE; | |
5178 | } | |
5179 | ||
a6bb11b2 YZ |
5180 | case BFD_RELOC_AARCH64_16: |
5181 | #if ARCH_SIZE == 64 | |
5182 | case BFD_RELOC_AARCH64_32: | |
5183 | #endif | |
5184 | case BFD_RELOC_AARCH64_ADD_LO12: | |
a6bb11b2 | 5185 | case BFD_RELOC_AARCH64_BRANCH19: |
ce336788 | 5186 | case BFD_RELOC_AARCH64_LDST128_LO12: |
a6bb11b2 YZ |
5187 | case BFD_RELOC_AARCH64_LDST16_LO12: |
5188 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
5189 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
ce336788 | 5190 | case BFD_RELOC_AARCH64_LDST8_LO12: |
a6bb11b2 YZ |
5191 | case BFD_RELOC_AARCH64_MOVW_G0: |
5192 | case BFD_RELOC_AARCH64_MOVW_G0_NC: | |
ce336788 | 5193 | case BFD_RELOC_AARCH64_MOVW_G0_S: |
a6bb11b2 YZ |
5194 | case BFD_RELOC_AARCH64_MOVW_G1: |
5195 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
ce336788 | 5196 | case BFD_RELOC_AARCH64_MOVW_G1_S: |
a6bb11b2 YZ |
5197 | case BFD_RELOC_AARCH64_MOVW_G2: |
5198 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
ce336788 | 5199 | case BFD_RELOC_AARCH64_MOVW_G2_S: |
a6bb11b2 | 5200 | case BFD_RELOC_AARCH64_MOVW_G3: |
a6bb11b2 | 5201 | case BFD_RELOC_AARCH64_TSTBR14: |
caed7120 YZ |
5202 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5203 | signed_addend, weak_undef_p); | |
a06ea964 NC |
5204 | break; |
5205 | ||
a6bb11b2 YZ |
5206 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
5207 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 5208 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 5209 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 5210 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 5211 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
a06ea964 NC |
5212 | if (globals->root.sgot == NULL) |
5213 | BFD_ASSERT (h != NULL); | |
5214 | ||
5215 | if (h != NULL) | |
5216 | { | |
99ad26cb | 5217 | bfd_vma addend = 0; |
a06ea964 NC |
5218 | value = aarch64_calculate_got_entry_vma (h, globals, info, value, |
5219 | output_bfd, | |
5220 | unresolved_reloc_p); | |
7018c030 JW |
5221 | if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
5222 | || bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
99ad26cb JW |
5223 | addend = (globals->root.sgot->output_section->vma |
5224 | + globals->root.sgot->output_offset); | |
caed7120 | 5225 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
99ad26cb | 5226 | addend, weak_undef_p); |
a06ea964 | 5227 | } |
b53b1bed JW |
5228 | else |
5229 | { | |
99ad26cb | 5230 | bfd_vma addend = 0; |
b53b1bed JW |
5231 | struct elf_aarch64_local_symbol *locals |
5232 | = elf_aarch64_locals (input_bfd); | |
5233 | ||
5234 | if (locals == NULL) | |
5235 | { | |
5236 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
5237 | (*_bfd_error_handler) | |
5238 | (_("%B: Local symbol descriptor table be NULL when applying " | |
5239 | "relocation %s against local symbol"), | |
5240 | input_bfd, elfNN_aarch64_howto_table[howto_index].name); | |
5241 | abort (); | |
5242 | } | |
5243 | ||
5244 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
5245 | base_got = globals->root.sgot; | |
5246 | bfd_vma got_entry_addr = (base_got->output_section->vma | |
5247 | + base_got->output_offset + off); | |
5248 | ||
5249 | if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
5250 | { | |
5251 | bfd_put_64 (output_bfd, value, base_got->contents + off); | |
5252 | ||
0e1862bb | 5253 | if (bfd_link_pic (info)) |
b53b1bed JW |
5254 | { |
5255 | asection *s; | |
5256 | Elf_Internal_Rela outrel; | |
5257 | ||
5258 | /* For local symbol, we have done absolute relocation in static | |
5259 | linking stageh. While for share library, we need to update | |
5260 | the content of GOT entry according to the share objects | |
5261 | loading base address. So we need to generate a | |
5262 | R_AARCH64_RELATIVE reloc for dynamic linker. */ | |
5263 | s = globals->root.srelgot; | |
5264 | if (s == NULL) | |
5265 | abort (); | |
5266 | ||
5267 | outrel.r_offset = got_entry_addr; | |
5268 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); | |
5269 | outrel.r_addend = value; | |
5270 | elf_append_rela (output_bfd, s, &outrel); | |
5271 | } | |
5272 | ||
5273 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
5274 | } | |
5275 | ||
5276 | /* Update the relocation value to GOT entry addr as we have transformed | |
5277 | the direct data access into indirect data access through GOT. */ | |
5278 | value = got_entry_addr; | |
99ad26cb | 5279 | |
7018c030 JW |
5280 | if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
5281 | || bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
99ad26cb JW |
5282 | addend = base_got->output_section->vma + base_got->output_offset; |
5283 | ||
5284 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, | |
5285 | addend, weak_undef_p); | |
b53b1bed JW |
5286 | } |
5287 | ||
a06ea964 NC |
5288 | break; |
5289 | ||
ce336788 | 5290 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 5291 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 5292 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 5293 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 5294 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 5295 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 5296 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
73f925cc | 5297 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 5298 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 5299 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
5300 | if (globals->root.sgot == NULL) |
5301 | return bfd_reloc_notsupported; | |
5302 | ||
5303 | value = (symbol_got_offset (input_bfd, h, r_symndx) | |
5304 | + globals->root.sgot->output_section->vma | |
f44a1f8e | 5305 | + globals->root.sgot->output_offset); |
a06ea964 | 5306 | |
caed7120 YZ |
5307 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5308 | 0, weak_undef_p); | |
a06ea964 NC |
5309 | *unresolved_reloc_p = FALSE; |
5310 | break; | |
5311 | ||
6ffe9a1b | 5312 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12: |
40fbed84 | 5313 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12: |
753999c1 | 5314 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC: |
6ffe9a1b JW |
5315 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0: |
5316 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC: | |
5317 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1: | |
5318 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC: | |
5319 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2: | |
40fbed84 JW |
5320 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5321 | signed_addend - dtpoff_base (info), | |
5322 | weak_undef_p); | |
5323 | break; | |
5324 | ||
a6bb11b2 YZ |
5325 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
5326 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: | |
5327 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: | |
5328 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: | |
5329 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
5330 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: | |
5331 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
5332 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
caed7120 YZ |
5333 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5334 | signed_addend - tpoff_base (info), | |
5335 | weak_undef_p); | |
a06ea964 NC |
5336 | *unresolved_reloc_p = FALSE; |
5337 | break; | |
5338 | ||
7bcccb57 MS |
5339 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
5340 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: | |
a6bb11b2 | 5341 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 5342 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 5343 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
7bcccb57 | 5344 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: |
a6bb11b2 | 5345 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
1ada945d | 5346 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
5347 | if (globals->root.sgot == NULL) |
5348 | return bfd_reloc_notsupported; | |
a06ea964 NC |
5349 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) |
5350 | + globals->root.sgotplt->output_section->vma | |
f44a1f8e | 5351 | + globals->root.sgotplt->output_offset |
a06ea964 NC |
5352 | + globals->sgotplt_jump_table_size); |
5353 | ||
caed7120 YZ |
5354 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5355 | 0, weak_undef_p); | |
a06ea964 NC |
5356 | *unresolved_reloc_p = FALSE; |
5357 | break; | |
5358 | ||
5359 | default: | |
5360 | return bfd_reloc_notsupported; | |
5361 | } | |
5362 | ||
5363 | if (saved_addend) | |
5364 | *saved_addend = value; | |
5365 | ||
5366 | /* Only apply the final relocation in a sequence. */ | |
5367 | if (save_addend) | |
5368 | return bfd_reloc_continue; | |
5369 | ||
caed7120 YZ |
5370 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, |
5371 | howto, value); | |
a06ea964 NC |
5372 | } |
5373 | ||
5374 | /* Handle TLS relaxations. Relaxing is possible for symbols that use | |
5375 | R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static | |
5376 | link. | |
5377 | ||
5378 | Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller | |
5379 | is to then call final_link_relocate. Return other values in the | |
5380 | case of error. */ | |
5381 | ||
5382 | static bfd_reloc_status_type | |
cec5225b | 5383 | elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals, |
a06ea964 NC |
5384 | bfd *input_bfd, bfd_byte *contents, |
5385 | Elf_Internal_Rela *rel, struct elf_link_hash_entry *h) | |
5386 | { | |
5387 | bfd_boolean is_local = h == NULL; | |
cec5225b | 5388 | unsigned int r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
5389 | unsigned long insn; |
5390 | ||
5391 | BFD_ASSERT (globals && input_bfd && contents && rel); | |
5392 | ||
a6bb11b2 | 5393 | switch (elfNN_aarch64_bfd_reloc_from_type (r_type)) |
a06ea964 | 5394 | { |
a6bb11b2 | 5395 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 5396 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a06ea964 NC |
5397 | if (is_local) |
5398 | { | |
5399 | /* GD->LE relaxation: | |
5400 | adrp x0, :tlsgd:var => movz x0, :tprel_g1:var | |
5401 | or | |
5402 | adrp x0, :tlsdesc:var => movz x0, :tprel_g1:var | |
5403 | */ | |
5404 | bfd_putl32 (0xd2a00000, contents + rel->r_offset); | |
5405 | return bfd_reloc_continue; | |
5406 | } | |
5407 | else | |
5408 | { | |
5409 | /* GD->IE relaxation: | |
5410 | adrp x0, :tlsgd:var => adrp x0, :gottprel:var | |
5411 | or | |
5412 | adrp x0, :tlsdesc:var => adrp x0, :gottprel:var | |
5413 | */ | |
a06ea964 NC |
5414 | return bfd_reloc_continue; |
5415 | } | |
5416 | ||
389b8029 MS |
5417 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
5418 | BFD_ASSERT (0); | |
5419 | break; | |
5420 | ||
1ada945d MS |
5421 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
5422 | if (is_local) | |
5423 | { | |
5424 | /* Tiny TLSDESC->LE relaxation: | |
5425 | ldr x1, :tlsdesc:var => movz x0, #:tprel_g1:var | |
5426 | adr x0, :tlsdesc:var => movk x0, #:tprel_g0_nc:var | |
5427 | .tlsdesccall var | |
5428 | blr x1 => nop | |
5429 | */ | |
5430 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); | |
5431 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
5432 | ||
5433 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5434 | AARCH64_R (TLSLE_MOVW_TPREL_G0_NC)); | |
5435 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5436 | ||
5437 | bfd_putl32 (0xd2a00000, contents + rel->r_offset); | |
5438 | bfd_putl32 (0xf2800000, contents + rel->r_offset + 4); | |
5439 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); | |
5440 | return bfd_reloc_continue; | |
5441 | } | |
5442 | else | |
5443 | { | |
5444 | /* Tiny TLSDESC->IE relaxation: | |
5445 | ldr x1, :tlsdesc:var => ldr x0, :gottprel:var | |
5446 | adr x0, :tlsdesc:var => nop | |
5447 | .tlsdesccall var | |
5448 | blr x1 => nop | |
5449 | */ | |
5450 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); | |
5451 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
5452 | ||
5453 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5454 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5455 | ||
5456 | bfd_putl32 (0x58000000, contents + rel->r_offset); | |
5457 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4); | |
5458 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); | |
5459 | return bfd_reloc_continue; | |
5460 | } | |
5461 | ||
3c12b054 MS |
5462 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
5463 | if (is_local) | |
5464 | { | |
5465 | /* Tiny GD->LE relaxation: | |
5466 | adr x0, :tlsgd:var => mrs x1, tpidr_el0 | |
5467 | bl __tls_get_addr => add x0, x1, #:tprel_hi12:x, lsl #12 | |
5468 | nop => add x0, x0, #:tprel_lo12_nc:x | |
5469 | */ | |
5470 | ||
5471 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
5472 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
5473 | ||
5474 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0); | |
5475 | bfd_putl32 (0x91400020, contents + rel->r_offset + 4); | |
5476 | bfd_putl32 (0x91000000, contents + rel->r_offset + 8); | |
5477 | ||
5478 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5479 | AARCH64_R (TLSLE_ADD_TPREL_LO12_NC)); | |
5480 | rel[1].r_offset = rel->r_offset + 8; | |
5481 | ||
5482 | /* Move the current relocation to the second instruction in | |
5483 | the sequence. */ | |
5484 | rel->r_offset += 4; | |
5485 | rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5486 | AARCH64_R (TLSLE_ADD_TPREL_HI12)); | |
5487 | return bfd_reloc_continue; | |
5488 | } | |
5489 | else | |
5490 | { | |
5491 | /* Tiny GD->IE relaxation: | |
5492 | adr x0, :tlsgd:var => ldr x0, :gottprel:var | |
5493 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
5494 | nop => add x0, x0, x1 | |
5495 | */ | |
5496 | ||
5497 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
5498 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
5499 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5500 | ||
5501 | bfd_putl32 (0x58000000, contents + rel->r_offset); | |
5502 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); | |
5503 | bfd_putl32 (0x8b000020, contents + rel->r_offset + 8); | |
5504 | return bfd_reloc_continue; | |
5505 | } | |
5506 | ||
043bf05a MS |
5507 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
5508 | return bfd_reloc_continue; | |
5509 | ||
a6bb11b2 | 5510 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
a06ea964 NC |
5511 | if (is_local) |
5512 | { | |
5513 | /* GD->LE relaxation: | |
5514 | ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var | |
5515 | */ | |
5516 | bfd_putl32 (0xf2800000, contents + rel->r_offset); | |
5517 | return bfd_reloc_continue; | |
5518 | } | |
5519 | else | |
5520 | { | |
5521 | /* GD->IE relaxation: | |
5522 | ldr xd, [x0, #:tlsdesc_lo12:var] => ldr x0, [x0, #:gottprel_lo12:var] | |
5523 | */ | |
5524 | insn = bfd_getl32 (contents + rel->r_offset); | |
fa85fb9a | 5525 | insn &= 0xffffffe0; |
a06ea964 NC |
5526 | bfd_putl32 (insn, contents + rel->r_offset); |
5527 | return bfd_reloc_continue; | |
5528 | } | |
5529 | ||
a6bb11b2 | 5530 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a06ea964 NC |
5531 | if (is_local) |
5532 | { | |
5533 | /* GD->LE relaxation | |
5534 | add x0, #:tlsgd_lo12:var => movk x0, :tprel_g0_nc:var | |
5535 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
5536 | nop => add x0, x1, x0 | |
5537 | */ | |
5538 | ||
5539 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
5540 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
cec5225b | 5541 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 NC |
5542 | |
5543 | bfd_putl32 (0xf2800000, contents + rel->r_offset); | |
5544 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); | |
5545 | bfd_putl32 (0x8b000020, contents + rel->r_offset + 8); | |
5546 | return bfd_reloc_continue; | |
5547 | } | |
5548 | else | |
5549 | { | |
5550 | /* GD->IE relaxation | |
5551 | ADD x0, #:tlsgd_lo12:var => ldr x0, [x0, #:gottprel_lo12:var] | |
5552 | BL __tls_get_addr => mrs x1, tpidr_el0 | |
5553 | R_AARCH64_CALL26 | |
5554 | NOP => add x0, x1, x0 | |
5555 | */ | |
5556 | ||
a6bb11b2 | 5557 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); |
a06ea964 NC |
5558 | |
5559 | /* Remove the relocation on the BL instruction. */ | |
cec5225b | 5560 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 NC |
5561 | |
5562 | bfd_putl32 (0xf9400000, contents + rel->r_offset); | |
5563 | ||
5564 | /* We choose to fixup the BL and NOP instructions using the | |
5565 | offset from the second relocation to allow flexibility in | |
5566 | scheduling instructions between the ADD and BL. */ | |
5567 | bfd_putl32 (0xd53bd041, contents + rel[1].r_offset); | |
5568 | bfd_putl32 (0x8b000020, contents + rel[1].r_offset + 4); | |
5569 | return bfd_reloc_continue; | |
5570 | } | |
5571 | ||
a6bb11b2 YZ |
5572 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
5573 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
a06ea964 NC |
5574 | /* GD->IE/LE relaxation: |
5575 | add x0, x0, #:tlsdesc_lo12:var => nop | |
5576 | blr xd => nop | |
5577 | */ | |
5578 | bfd_putl32 (INSN_NOP, contents + rel->r_offset); | |
5579 | return bfd_reloc_ok; | |
5580 | ||
a6bb11b2 | 5581 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a06ea964 NC |
5582 | /* IE->LE relaxation: |
5583 | adrp xd, :gottprel:var => movz xd, :tprel_g1:var | |
5584 | */ | |
5585 | if (is_local) | |
5586 | { | |
5587 | insn = bfd_getl32 (contents + rel->r_offset); | |
5588 | bfd_putl32 (0xd2a00000 | (insn & 0x1f), contents + rel->r_offset); | |
5589 | } | |
5590 | return bfd_reloc_continue; | |
5591 | ||
a6bb11b2 | 5592 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: |
a06ea964 NC |
5593 | /* IE->LE relaxation: |
5594 | ldr xd, [xm, #:gottprel_lo12:var] => movk xd, :tprel_g0_nc:var | |
5595 | */ | |
5596 | if (is_local) | |
5597 | { | |
5598 | insn = bfd_getl32 (contents + rel->r_offset); | |
5599 | bfd_putl32 (0xf2800000 | (insn & 0x1f), contents + rel->r_offset); | |
5600 | } | |
5601 | return bfd_reloc_continue; | |
5602 | ||
5603 | default: | |
5604 | return bfd_reloc_continue; | |
5605 | } | |
5606 | ||
5607 | return bfd_reloc_ok; | |
5608 | } | |
5609 | ||
5610 | /* Relocate an AArch64 ELF section. */ | |
5611 | ||
5612 | static bfd_boolean | |
cec5225b | 5613 | elfNN_aarch64_relocate_section (bfd *output_bfd, |
a06ea964 NC |
5614 | struct bfd_link_info *info, |
5615 | bfd *input_bfd, | |
5616 | asection *input_section, | |
5617 | bfd_byte *contents, | |
5618 | Elf_Internal_Rela *relocs, | |
5619 | Elf_Internal_Sym *local_syms, | |
5620 | asection **local_sections) | |
5621 | { | |
5622 | Elf_Internal_Shdr *symtab_hdr; | |
5623 | struct elf_link_hash_entry **sym_hashes; | |
5624 | Elf_Internal_Rela *rel; | |
5625 | Elf_Internal_Rela *relend; | |
5626 | const char *name; | |
cec5225b | 5627 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 NC |
5628 | bfd_boolean save_addend = FALSE; |
5629 | bfd_vma addend = 0; | |
5630 | ||
cec5225b | 5631 | globals = elf_aarch64_hash_table (info); |
a06ea964 NC |
5632 | |
5633 | symtab_hdr = &elf_symtab_hdr (input_bfd); | |
5634 | sym_hashes = elf_sym_hashes (input_bfd); | |
5635 | ||
5636 | rel = relocs; | |
5637 | relend = relocs + input_section->reloc_count; | |
5638 | for (; rel < relend; rel++) | |
5639 | { | |
5640 | unsigned int r_type; | |
a6bb11b2 YZ |
5641 | bfd_reloc_code_real_type bfd_r_type; |
5642 | bfd_reloc_code_real_type relaxed_bfd_r_type; | |
a06ea964 NC |
5643 | reloc_howto_type *howto; |
5644 | unsigned long r_symndx; | |
5645 | Elf_Internal_Sym *sym; | |
5646 | asection *sec; | |
5647 | struct elf_link_hash_entry *h; | |
5648 | bfd_vma relocation; | |
5649 | bfd_reloc_status_type r; | |
5650 | arelent bfd_reloc; | |
5651 | char sym_type; | |
5652 | bfd_boolean unresolved_reloc = FALSE; | |
5653 | char *error_message = NULL; | |
5654 | ||
cec5225b YZ |
5655 | r_symndx = ELFNN_R_SYM (rel->r_info); |
5656 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 | 5657 | |
cec5225b | 5658 | bfd_reloc.howto = elfNN_aarch64_howto_from_type (r_type); |
a06ea964 NC |
5659 | howto = bfd_reloc.howto; |
5660 | ||
7fcfd62d NC |
5661 | if (howto == NULL) |
5662 | { | |
5663 | (*_bfd_error_handler) | |
5664 | (_("%B: unrecognized relocation (0x%x) in section `%A'"), | |
5665 | input_bfd, input_section, r_type); | |
5666 | return FALSE; | |
5667 | } | |
a6bb11b2 | 5668 | bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto); |
7fcfd62d | 5669 | |
a06ea964 NC |
5670 | h = NULL; |
5671 | sym = NULL; | |
5672 | sec = NULL; | |
5673 | ||
5674 | if (r_symndx < symtab_hdr->sh_info) | |
5675 | { | |
5676 | sym = local_syms + r_symndx; | |
cec5225b | 5677 | sym_type = ELFNN_ST_TYPE (sym->st_info); |
a06ea964 NC |
5678 | sec = local_sections[r_symndx]; |
5679 | ||
5680 | /* An object file might have a reference to a local | |
5681 | undefined symbol. This is a daft object file, but we | |
5682 | should at least do something about it. */ | |
5683 | if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL | |
5684 | && bfd_is_und_section (sec) | |
5685 | && ELF_ST_BIND (sym->st_info) != STB_WEAK) | |
5686 | { | |
5687 | if (!info->callbacks->undefined_symbol | |
5688 | (info, bfd_elf_string_from_elf_section | |
5689 | (input_bfd, symtab_hdr->sh_link, sym->st_name), | |
5690 | input_bfd, input_section, rel->r_offset, TRUE)) | |
5691 | return FALSE; | |
5692 | } | |
5693 | ||
a06ea964 | 5694 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
1419bbe5 WN |
5695 | |
5696 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
0e1862bb | 5697 | if (!bfd_link_relocatable (info) |
1419bbe5 WN |
5698 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
5699 | { | |
5700 | h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd, | |
5701 | rel, FALSE); | |
5702 | if (h == NULL) | |
5703 | abort (); | |
5704 | ||
5705 | /* Set STT_GNU_IFUNC symbol value. */ | |
5706 | h->root.u.def.value = sym->st_value; | |
5707 | h->root.u.def.section = sec; | |
5708 | } | |
a06ea964 NC |
5709 | } |
5710 | else | |
5711 | { | |
62d887d4 | 5712 | bfd_boolean warned, ignored; |
a06ea964 NC |
5713 | |
5714 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
5715 | r_symndx, symtab_hdr, sym_hashes, | |
5716 | h, sec, relocation, | |
62d887d4 | 5717 | unresolved_reloc, warned, ignored); |
a06ea964 NC |
5718 | |
5719 | sym_type = h->type; | |
5720 | } | |
5721 | ||
5722 | if (sec != NULL && discarded_section (sec)) | |
5723 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
5724 | rel, 1, relend, howto, 0, contents); | |
5725 | ||
0e1862bb | 5726 | if (bfd_link_relocatable (info)) |
2e0488d3 | 5727 | continue; |
a06ea964 NC |
5728 | |
5729 | if (h != NULL) | |
5730 | name = h->root.root.string; | |
5731 | else | |
5732 | { | |
5733 | name = (bfd_elf_string_from_elf_section | |
5734 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
5735 | if (name == NULL || *name == '\0') | |
5736 | name = bfd_section_name (input_bfd, sec); | |
5737 | } | |
5738 | ||
5739 | if (r_symndx != 0 | |
5740 | && r_type != R_AARCH64_NONE | |
5741 | && r_type != R_AARCH64_NULL | |
5742 | && (h == NULL | |
5743 | || h->root.type == bfd_link_hash_defined | |
5744 | || h->root.type == bfd_link_hash_defweak) | |
a6bb11b2 | 5745 | && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS)) |
a06ea964 NC |
5746 | { |
5747 | (*_bfd_error_handler) | |
5748 | ((sym_type == STT_TLS | |
5749 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") | |
5750 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")), | |
5751 | input_bfd, | |
5752 | input_section, (long) rel->r_offset, howto->name, name); | |
5753 | } | |
5754 | ||
a06ea964 NC |
5755 | /* We relax only if we can see that there can be a valid transition |
5756 | from a reloc type to another. | |
cec5225b | 5757 | We call elfNN_aarch64_final_link_relocate unless we're completely |
a06ea964 NC |
5758 | done, i.e., the relaxation produced the final output we want. */ |
5759 | ||
a6bb11b2 YZ |
5760 | relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, |
5761 | h, r_symndx); | |
5762 | if (relaxed_bfd_r_type != bfd_r_type) | |
a06ea964 | 5763 | { |
a6bb11b2 YZ |
5764 | bfd_r_type = relaxed_bfd_r_type; |
5765 | howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type); | |
5766 | BFD_ASSERT (howto != NULL); | |
5767 | r_type = howto->type; | |
cec5225b | 5768 | r = elfNN_aarch64_tls_relax (globals, input_bfd, contents, rel, h); |
a06ea964 NC |
5769 | unresolved_reloc = 0; |
5770 | } | |
5771 | else | |
5772 | r = bfd_reloc_continue; | |
5773 | ||
5774 | /* There may be multiple consecutive relocations for the | |
5775 | same offset. In that case we are supposed to treat the | |
5776 | output of each relocation as the addend for the next. */ | |
5777 | if (rel + 1 < relend | |
5778 | && rel->r_offset == rel[1].r_offset | |
cec5225b YZ |
5779 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE |
5780 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL) | |
a06ea964 NC |
5781 | save_addend = TRUE; |
5782 | else | |
5783 | save_addend = FALSE; | |
5784 | ||
5785 | if (r == bfd_reloc_continue) | |
cec5225b | 5786 | r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd, |
a06ea964 NC |
5787 | input_section, contents, rel, |
5788 | relocation, info, sec, | |
5789 | h, &unresolved_reloc, | |
1419bbe5 | 5790 | save_addend, &addend, sym); |
a06ea964 | 5791 | |
a6bb11b2 | 5792 | switch (elfNN_aarch64_bfd_reloc_from_type (r_type)) |
a06ea964 | 5793 | { |
ce336788 | 5794 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 5795 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 5796 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
73f925cc | 5797 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 5798 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 5799 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
5800 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
5801 | { | |
5802 | bfd_boolean need_relocs = FALSE; | |
5803 | bfd_byte *loc; | |
5804 | int indx; | |
5805 | bfd_vma off; | |
5806 | ||
5807 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
5808 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
5809 | ||
5810 | need_relocs = | |
0e1862bb | 5811 | (bfd_link_pic (info) || indx != 0) && |
a06ea964 NC |
5812 | (h == NULL |
5813 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5814 | || h->root.type != bfd_link_hash_undefweak); | |
5815 | ||
5816 | BFD_ASSERT (globals->root.srelgot != NULL); | |
5817 | ||
5818 | if (need_relocs) | |
5819 | { | |
5820 | Elf_Internal_Rela rela; | |
a6bb11b2 | 5821 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD)); |
a06ea964 NC |
5822 | rela.r_addend = 0; |
5823 | rela.r_offset = globals->root.sgot->output_section->vma + | |
5824 | globals->root.sgot->output_offset + off; | |
5825 | ||
5826 | ||
5827 | loc = globals->root.srelgot->contents; | |
5828 | loc += globals->root.srelgot->reloc_count++ | |
5829 | * RELOC_SIZE (htab); | |
cec5225b | 5830 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 5831 | |
f69e4920 JW |
5832 | bfd_reloc_code_real_type real_type = |
5833 | elfNN_aarch64_bfd_reloc_from_type (r_type); | |
5834 | ||
5835 | if (real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 | |
73f925cc JW |
5836 | || real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 |
5837 | || real_type == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC) | |
77a69ff8 JW |
5838 | { |
5839 | /* For local dynamic, don't generate DTPREL in any case. | |
5840 | Initialize the DTPREL slot into zero, so we get module | |
5841 | base address when invoke runtime TLS resolver. */ | |
5842 | bfd_put_NN (output_bfd, 0, | |
5843 | globals->root.sgot->contents + off | |
5844 | + GOT_ENTRY_SIZE); | |
5845 | } | |
5846 | else if (indx == 0) | |
a06ea964 | 5847 | { |
cec5225b | 5848 | bfd_put_NN (output_bfd, |
a06ea964 NC |
5849 | relocation - dtpoff_base (info), |
5850 | globals->root.sgot->contents + off | |
5851 | + GOT_ENTRY_SIZE); | |
5852 | } | |
5853 | else | |
5854 | { | |
5855 | /* This TLS symbol is global. We emit a | |
5856 | relocation to fixup the tls offset at load | |
5857 | time. */ | |
5858 | rela.r_info = | |
a6bb11b2 | 5859 | ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL)); |
a06ea964 NC |
5860 | rela.r_addend = 0; |
5861 | rela.r_offset = | |
5862 | (globals->root.sgot->output_section->vma | |
5863 | + globals->root.sgot->output_offset + off | |
5864 | + GOT_ENTRY_SIZE); | |
5865 | ||
5866 | loc = globals->root.srelgot->contents; | |
5867 | loc += globals->root.srelgot->reloc_count++ | |
5868 | * RELOC_SIZE (globals); | |
cec5225b YZ |
5869 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
5870 | bfd_put_NN (output_bfd, (bfd_vma) 0, | |
a06ea964 NC |
5871 | globals->root.sgot->contents + off |
5872 | + GOT_ENTRY_SIZE); | |
5873 | } | |
5874 | } | |
5875 | else | |
5876 | { | |
cec5225b | 5877 | bfd_put_NN (output_bfd, (bfd_vma) 1, |
a06ea964 | 5878 | globals->root.sgot->contents + off); |
cec5225b | 5879 | bfd_put_NN (output_bfd, |
a06ea964 NC |
5880 | relocation - dtpoff_base (info), |
5881 | globals->root.sgot->contents + off | |
5882 | + GOT_ENTRY_SIZE); | |
5883 | } | |
5884 | ||
5885 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
5886 | } | |
5887 | break; | |
5888 | ||
a6bb11b2 YZ |
5889 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
5890 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
043bf05a | 5891 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
a06ea964 NC |
5892 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
5893 | { | |
5894 | bfd_boolean need_relocs = FALSE; | |
5895 | bfd_byte *loc; | |
5896 | int indx; | |
5897 | bfd_vma off; | |
5898 | ||
5899 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
5900 | ||
5901 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
5902 | ||
5903 | need_relocs = | |
0e1862bb | 5904 | (bfd_link_pic (info) || indx != 0) && |
a06ea964 NC |
5905 | (h == NULL |
5906 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5907 | || h->root.type != bfd_link_hash_undefweak); | |
5908 | ||
5909 | BFD_ASSERT (globals->root.srelgot != NULL); | |
5910 | ||
5911 | if (need_relocs) | |
5912 | { | |
5913 | Elf_Internal_Rela rela; | |
5914 | ||
5915 | if (indx == 0) | |
5916 | rela.r_addend = relocation - dtpoff_base (info); | |
5917 | else | |
5918 | rela.r_addend = 0; | |
5919 | ||
a6bb11b2 | 5920 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL)); |
a06ea964 NC |
5921 | rela.r_offset = globals->root.sgot->output_section->vma + |
5922 | globals->root.sgot->output_offset + off; | |
5923 | ||
5924 | loc = globals->root.srelgot->contents; | |
5925 | loc += globals->root.srelgot->reloc_count++ | |
5926 | * RELOC_SIZE (htab); | |
5927 | ||
cec5225b | 5928 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 5929 | |
cec5225b | 5930 | bfd_put_NN (output_bfd, rela.r_addend, |
a06ea964 NC |
5931 | globals->root.sgot->contents + off); |
5932 | } | |
5933 | else | |
cec5225b | 5934 | bfd_put_NN (output_bfd, relocation - tpoff_base (info), |
a06ea964 NC |
5935 | globals->root.sgot->contents + off); |
5936 | ||
5937 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
5938 | } | |
5939 | break; | |
5940 | ||
7bcccb57 | 5941 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
a6bb11b2 | 5942 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 5943 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 5944 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
1ada945d | 5945 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
5946 | if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx)) |
5947 | { | |
5948 | bfd_boolean need_relocs = FALSE; | |
5949 | int indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
5950 | bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx); | |
5951 | ||
5952 | need_relocs = (h == NULL | |
5953 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5954 | || h->root.type != bfd_link_hash_undefweak); | |
5955 | ||
5956 | BFD_ASSERT (globals->root.srelgot != NULL); | |
5957 | BFD_ASSERT (globals->root.sgot != NULL); | |
5958 | ||
5959 | if (need_relocs) | |
5960 | { | |
5961 | bfd_byte *loc; | |
5962 | Elf_Internal_Rela rela; | |
a6bb11b2 YZ |
5963 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC)); |
5964 | ||
a06ea964 NC |
5965 | rela.r_addend = 0; |
5966 | rela.r_offset = (globals->root.sgotplt->output_section->vma | |
5967 | + globals->root.sgotplt->output_offset | |
5968 | + off + globals->sgotplt_jump_table_size); | |
5969 | ||
5970 | if (indx == 0) | |
5971 | rela.r_addend = relocation - dtpoff_base (info); | |
5972 | ||
5973 | /* Allocate the next available slot in the PLT reloc | |
5974 | section to hold our R_AARCH64_TLSDESC, the next | |
5975 | available slot is determined from reloc_count, | |
5976 | which we step. But note, reloc_count was | |
5977 | artifically moved down while allocating slots for | |
5978 | real PLT relocs such that all of the PLT relocs | |
5979 | will fit above the initial reloc_count and the | |
5980 | extra stuff will fit below. */ | |
5981 | loc = globals->root.srelplt->contents; | |
5982 | loc += globals->root.srelplt->reloc_count++ | |
5983 | * RELOC_SIZE (globals); | |
5984 | ||
cec5225b | 5985 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 5986 | |
cec5225b | 5987 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
5988 | globals->root.sgotplt->contents + off + |
5989 | globals->sgotplt_jump_table_size); | |
cec5225b | 5990 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
5991 | globals->root.sgotplt->contents + off + |
5992 | globals->sgotplt_jump_table_size + | |
5993 | GOT_ENTRY_SIZE); | |
5994 | } | |
5995 | ||
5996 | symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx); | |
5997 | } | |
5998 | break; | |
a6bb11b2 YZ |
5999 | default: |
6000 | break; | |
a06ea964 NC |
6001 | } |
6002 | ||
6003 | if (!save_addend) | |
6004 | addend = 0; | |
6005 | ||
6006 | ||
6007 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections | |
6008 | because such sections are not SEC_ALLOC and thus ld.so will | |
6009 | not process them. */ | |
6010 | if (unresolved_reloc | |
6011 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
6012 | && h->def_dynamic) | |
6013 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
6014 | +rel->r_offset) != (bfd_vma) - 1) | |
6015 | { | |
6016 | (*_bfd_error_handler) | |
6017 | (_ | |
6018 | ("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), | |
6019 | input_bfd, input_section, (long) rel->r_offset, howto->name, | |
6020 | h->root.root.string); | |
6021 | return FALSE; | |
6022 | } | |
6023 | ||
6024 | if (r != bfd_reloc_ok && r != bfd_reloc_continue) | |
6025 | { | |
c674f5cd JW |
6026 | bfd_reloc_code_real_type real_r_type |
6027 | = elfNN_aarch64_bfd_reloc_from_type (r_type); | |
6028 | ||
a06ea964 NC |
6029 | switch (r) |
6030 | { | |
6031 | case bfd_reloc_overflow: | |
fdc3b1b1 JW |
6032 | if (!(*info->callbacks->reloc_overflow) |
6033 | (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, | |
6034 | input_bfd, input_section, rel->r_offset)) | |
a06ea964 | 6035 | return FALSE; |
c674f5cd JW |
6036 | if (real_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
6037 | || real_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
6038 | { | |
6039 | (*info->callbacks->warning) | |
6040 | (info, | |
6041 | _("Too many GOT entries for -fpic, " | |
6042 | "please recompile with -fPIC"), | |
6043 | name, input_bfd, input_section, rel->r_offset); | |
6044 | return FALSE; | |
6045 | } | |
a06ea964 NC |
6046 | break; |
6047 | ||
6048 | case bfd_reloc_undefined: | |
6049 | if (!((*info->callbacks->undefined_symbol) | |
6050 | (info, name, input_bfd, input_section, | |
6051 | rel->r_offset, TRUE))) | |
6052 | return FALSE; | |
6053 | break; | |
6054 | ||
6055 | case bfd_reloc_outofrange: | |
6056 | error_message = _("out of range"); | |
6057 | goto common_error; | |
6058 | ||
6059 | case bfd_reloc_notsupported: | |
6060 | error_message = _("unsupported relocation"); | |
6061 | goto common_error; | |
6062 | ||
6063 | case bfd_reloc_dangerous: | |
6064 | /* error_message should already be set. */ | |
6065 | goto common_error; | |
6066 | ||
6067 | default: | |
6068 | error_message = _("unknown error"); | |
6069 | /* Fall through. */ | |
6070 | ||
6071 | common_error: | |
6072 | BFD_ASSERT (error_message != NULL); | |
6073 | if (!((*info->callbacks->reloc_dangerous) | |
6074 | (info, error_message, input_bfd, input_section, | |
6075 | rel->r_offset))) | |
6076 | return FALSE; | |
6077 | break; | |
6078 | } | |
6079 | } | |
6080 | } | |
6081 | ||
6082 | return TRUE; | |
6083 | } | |
6084 | ||
6085 | /* Set the right machine number. */ | |
6086 | ||
6087 | static bfd_boolean | |
cec5225b | 6088 | elfNN_aarch64_object_p (bfd *abfd) |
a06ea964 | 6089 | { |
cec5225b YZ |
6090 | #if ARCH_SIZE == 32 |
6091 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32); | |
6092 | #else | |
a06ea964 | 6093 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64); |
cec5225b | 6094 | #endif |
a06ea964 NC |
6095 | return TRUE; |
6096 | } | |
6097 | ||
6098 | /* Function to keep AArch64 specific flags in the ELF header. */ | |
6099 | ||
6100 | static bfd_boolean | |
cec5225b | 6101 | elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags) |
a06ea964 NC |
6102 | { |
6103 | if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags) | |
6104 | { | |
6105 | } | |
6106 | else | |
6107 | { | |
6108 | elf_elfheader (abfd)->e_flags = flags; | |
6109 | elf_flags_init (abfd) = TRUE; | |
6110 | } | |
6111 | ||
6112 | return TRUE; | |
6113 | } | |
6114 | ||
a06ea964 NC |
6115 | /* Merge backend specific data from an object file to the output |
6116 | object file when linking. */ | |
6117 | ||
6118 | static bfd_boolean | |
cec5225b | 6119 | elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
a06ea964 NC |
6120 | { |
6121 | flagword out_flags; | |
6122 | flagword in_flags; | |
6123 | bfd_boolean flags_compatible = TRUE; | |
6124 | asection *sec; | |
6125 | ||
6126 | /* Check if we have the same endianess. */ | |
6127 | if (!_bfd_generic_verify_endian_match (ibfd, obfd)) | |
6128 | return FALSE; | |
6129 | ||
6130 | if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd)) | |
6131 | return TRUE; | |
6132 | ||
6133 | /* The input BFD must have had its flags initialised. */ | |
6134 | /* The following seems bogus to me -- The flags are initialized in | |
6135 | the assembler but I don't think an elf_flags_init field is | |
6136 | written into the object. */ | |
6137 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ | |
6138 | ||
6139 | in_flags = elf_elfheader (ibfd)->e_flags; | |
6140 | out_flags = elf_elfheader (obfd)->e_flags; | |
6141 | ||
6142 | if (!elf_flags_init (obfd)) | |
6143 | { | |
6144 | /* If the input is the default architecture and had the default | |
6145 | flags then do not bother setting the flags for the output | |
6146 | architecture, instead allow future merges to do this. If no | |
6147 | future merges ever set these flags then they will retain their | |
6148 | uninitialised values, which surprise surprise, correspond | |
6149 | to the default values. */ | |
6150 | if (bfd_get_arch_info (ibfd)->the_default | |
6151 | && elf_elfheader (ibfd)->e_flags == 0) | |
6152 | return TRUE; | |
6153 | ||
6154 | elf_flags_init (obfd) = TRUE; | |
6155 | elf_elfheader (obfd)->e_flags = in_flags; | |
6156 | ||
6157 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
6158 | && bfd_get_arch_info (obfd)->the_default) | |
6159 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
6160 | bfd_get_mach (ibfd)); | |
6161 | ||
6162 | return TRUE; | |
6163 | } | |
6164 | ||
6165 | /* Identical flags must be compatible. */ | |
6166 | if (in_flags == out_flags) | |
6167 | return TRUE; | |
6168 | ||
6169 | /* Check to see if the input BFD actually contains any sections. If | |
6170 | not, its flags may not have been initialised either, but it | |
6171 | cannot actually cause any incompatiblity. Do not short-circuit | |
6172 | dynamic objects; their section list may be emptied by | |
6173 | elf_link_add_object_symbols. | |
6174 | ||
6175 | Also check to see if there are no code sections in the input. | |
6176 | In this case there is no need to check for code specific flags. | |
6177 | XXX - do we need to worry about floating-point format compatability | |
6178 | in data sections ? */ | |
6179 | if (!(ibfd->flags & DYNAMIC)) | |
6180 | { | |
6181 | bfd_boolean null_input_bfd = TRUE; | |
6182 | bfd_boolean only_data_sections = TRUE; | |
6183 | ||
6184 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
6185 | { | |
6186 | if ((bfd_get_section_flags (ibfd, sec) | |
6187 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
6188 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
6189 | only_data_sections = FALSE; | |
6190 | ||
6191 | null_input_bfd = FALSE; | |
6192 | break; | |
6193 | } | |
6194 | ||
6195 | if (null_input_bfd || only_data_sections) | |
6196 | return TRUE; | |
6197 | } | |
6198 | ||
6199 | return flags_compatible; | |
6200 | } | |
6201 | ||
6202 | /* Display the flags field. */ | |
6203 | ||
6204 | static bfd_boolean | |
cec5225b | 6205 | elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr) |
a06ea964 NC |
6206 | { |
6207 | FILE *file = (FILE *) ptr; | |
6208 | unsigned long flags; | |
6209 | ||
6210 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
6211 | ||
6212 | /* Print normal ELF private data. */ | |
6213 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
6214 | ||
6215 | flags = elf_elfheader (abfd)->e_flags; | |
6216 | /* Ignore init flag - it may not be set, despite the flags field | |
6217 | containing valid data. */ | |
6218 | ||
6219 | /* xgettext:c-format */ | |
6220 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
6221 | ||
6222 | if (flags) | |
6223 | fprintf (file, _("<Unrecognised flag bits set>")); | |
6224 | ||
6225 | fputc ('\n', file); | |
6226 | ||
6227 | return TRUE; | |
6228 | } | |
6229 | ||
6230 | /* Update the got entry reference counts for the section being removed. */ | |
6231 | ||
6232 | static bfd_boolean | |
cec5225b | 6233 | elfNN_aarch64_gc_sweep_hook (bfd *abfd, |
cb8af559 NC |
6234 | struct bfd_link_info *info, |
6235 | asection *sec, | |
6236 | const Elf_Internal_Rela * relocs) | |
a06ea964 | 6237 | { |
cec5225b | 6238 | struct elf_aarch64_link_hash_table *htab; |
59c108f7 NC |
6239 | Elf_Internal_Shdr *symtab_hdr; |
6240 | struct elf_link_hash_entry **sym_hashes; | |
cb8af559 | 6241 | struct elf_aarch64_local_symbol *locals; |
59c108f7 NC |
6242 | const Elf_Internal_Rela *rel, *relend; |
6243 | ||
0e1862bb | 6244 | if (bfd_link_relocatable (info)) |
59c108f7 NC |
6245 | return TRUE; |
6246 | ||
cec5225b | 6247 | htab = elf_aarch64_hash_table (info); |
59c108f7 NC |
6248 | |
6249 | if (htab == NULL) | |
6250 | return FALSE; | |
6251 | ||
6252 | elf_section_data (sec)->local_dynrel = NULL; | |
6253 | ||
6254 | symtab_hdr = &elf_symtab_hdr (abfd); | |
6255 | sym_hashes = elf_sym_hashes (abfd); | |
6256 | ||
cec5225b | 6257 | locals = elf_aarch64_locals (abfd); |
59c108f7 NC |
6258 | |
6259 | relend = relocs + sec->reloc_count; | |
6260 | for (rel = relocs; rel < relend; rel++) | |
6261 | { | |
6262 | unsigned long r_symndx; | |
6263 | unsigned int r_type; | |
6264 | struct elf_link_hash_entry *h = NULL; | |
6265 | ||
cec5225b | 6266 | r_symndx = ELFNN_R_SYM (rel->r_info); |
8847944f | 6267 | |
59c108f7 NC |
6268 | if (r_symndx >= symtab_hdr->sh_info) |
6269 | { | |
8847944f | 6270 | |
59c108f7 NC |
6271 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
6272 | while (h->root.type == bfd_link_hash_indirect | |
6273 | || h->root.type == bfd_link_hash_warning) | |
6274 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
59c108f7 NC |
6275 | } |
6276 | else | |
6277 | { | |
6278 | Elf_Internal_Sym *isym; | |
6279 | ||
8847944f | 6280 | /* A local symbol. */ |
59c108f7 NC |
6281 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
6282 | abfd, r_symndx); | |
1419bbe5 WN |
6283 | |
6284 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
6285 | if (isym != NULL | |
6286 | && ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
6287 | { | |
6288 | h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, FALSE); | |
6289 | if (h == NULL) | |
6290 | abort (); | |
6291 | } | |
6292 | } | |
6293 | ||
6294 | if (h) | |
6295 | { | |
6296 | struct elf_aarch64_link_hash_entry *eh; | |
6297 | struct elf_dyn_relocs **pp; | |
6298 | struct elf_dyn_relocs *p; | |
6299 | ||
6300 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
6301 | ||
6302 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
6303 | if (p->sec == sec) | |
6304 | { | |
6305 | /* Everything must go for SEC. */ | |
6306 | *pp = p->next; | |
6307 | break; | |
6308 | } | |
59c108f7 NC |
6309 | } |
6310 | ||
cec5225b | 6311 | r_type = ELFNN_R_TYPE (rel->r_info); |
a6bb11b2 | 6312 | switch (aarch64_tls_transition (abfd,info, r_type, h ,r_symndx)) |
59c108f7 | 6313 | { |
a6bb11b2 | 6314 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
7bcccb57 | 6315 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
7018c030 | 6316 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
7bcccb57 | 6317 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 6318 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
7bcccb57 MS |
6319 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
6320 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: | |
6321 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
389b8029 | 6322 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
7bcccb57 MS |
6323 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
6324 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: | |
1ada945d | 6325 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a6bb11b2 | 6326 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
7bcccb57 | 6327 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 6328 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 6329 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 6330 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
7bcccb57 | 6331 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 6332 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
73f925cc | 6333 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 6334 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 6335 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a6bb11b2 | 6336 | if (h != NULL) |
59c108f7 NC |
6337 | { |
6338 | if (h->got.refcount > 0) | |
6339 | h->got.refcount -= 1; | |
1419bbe5 WN |
6340 | |
6341 | if (h->type == STT_GNU_IFUNC) | |
6342 | { | |
6343 | if (h->plt.refcount > 0) | |
6344 | h->plt.refcount -= 1; | |
6345 | } | |
59c108f7 | 6346 | } |
cb8af559 | 6347 | else if (locals != NULL) |
59c108f7 | 6348 | { |
cb8af559 NC |
6349 | if (locals[r_symndx].got_refcount > 0) |
6350 | locals[r_symndx].got_refcount -= 1; | |
59c108f7 NC |
6351 | } |
6352 | break; | |
6353 | ||
a6bb11b2 YZ |
6354 | case BFD_RELOC_AARCH64_CALL26: |
6355 | case BFD_RELOC_AARCH64_JUMP26: | |
6356 | /* If this is a local symbol then we resolve it | |
6357 | directly without creating a PLT entry. */ | |
59c108f7 NC |
6358 | if (h == NULL) |
6359 | continue; | |
6360 | ||
6361 | if (h->plt.refcount > 0) | |
6362 | h->plt.refcount -= 1; | |
6363 | break; | |
6364 | ||
ce336788 JW |
6365 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
6366 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
6367 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
614b09ce JW |
6368 | case BFD_RELOC_AARCH64_MOVW_G0_NC: |
6369 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
6370 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
6371 | case BFD_RELOC_AARCH64_MOVW_G3: | |
a6bb11b2 | 6372 | case BFD_RELOC_AARCH64_NN: |
0e1862bb | 6373 | if (h != NULL && bfd_link_executable (info)) |
59c108f7 NC |
6374 | { |
6375 | if (h->plt.refcount > 0) | |
6376 | h->plt.refcount -= 1; | |
6377 | } | |
6378 | break; | |
cec5225b | 6379 | |
59c108f7 NC |
6380 | default: |
6381 | break; | |
6382 | } | |
6383 | } | |
6384 | ||
a06ea964 NC |
6385 | return TRUE; |
6386 | } | |
6387 | ||
6388 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
6389 | regular object. The current definition is in some section of the | |
6390 | dynamic object, but we're not including those sections. We have to | |
6391 | change the definition to something the rest of the link can | |
6392 | understand. */ | |
6393 | ||
6394 | static bfd_boolean | |
cec5225b | 6395 | elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info, |
a06ea964 NC |
6396 | struct elf_link_hash_entry *h) |
6397 | { | |
cec5225b | 6398 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
6399 | asection *s; |
6400 | ||
6401 | /* If this is a function, put it in the procedure linkage table. We | |
6402 | will fill in the contents of the procedure linkage table later, | |
6403 | when we know the address of the .got section. */ | |
1419bbe5 | 6404 | if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt) |
a06ea964 NC |
6405 | { |
6406 | if (h->plt.refcount <= 0 | |
1419bbe5 WN |
6407 | || (h->type != STT_GNU_IFUNC |
6408 | && (SYMBOL_CALLS_LOCAL (info, h) | |
6409 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
6410 | && h->root.type == bfd_link_hash_undefweak)))) | |
a06ea964 NC |
6411 | { |
6412 | /* This case can occur if we saw a CALL26 reloc in | |
6413 | an input file, but the symbol wasn't referred to | |
6414 | by a dynamic object or all references were | |
6415 | garbage collected. In which case we can end up | |
6416 | resolving. */ | |
6417 | h->plt.offset = (bfd_vma) - 1; | |
6418 | h->needs_plt = 0; | |
6419 | } | |
6420 | ||
6421 | return TRUE; | |
6422 | } | |
6423 | else | |
80de0c6d | 6424 | /* Otherwise, reset to -1. */ |
a06ea964 NC |
6425 | h->plt.offset = (bfd_vma) - 1; |
6426 | ||
6427 | ||
6428 | /* If this is a weak symbol, and there is a real definition, the | |
6429 | processor independent code will have arranged for us to see the | |
6430 | real definition first, and we can just use the same value. */ | |
6431 | if (h->u.weakdef != NULL) | |
6432 | { | |
6433 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
6434 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
6435 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
6436 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
6437 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) | |
6438 | h->non_got_ref = h->u.weakdef->non_got_ref; | |
6439 | return TRUE; | |
6440 | } | |
6441 | ||
6442 | /* If we are creating a shared library, we must presume that the | |
6443 | only references to the symbol are via the global offset table. | |
6444 | For such cases we need not do anything here; the relocations will | |
6445 | be handled correctly by relocate_section. */ | |
0e1862bb | 6446 | if (bfd_link_pic (info)) |
a06ea964 NC |
6447 | return TRUE; |
6448 | ||
6449 | /* If there are no references to this symbol that do not use the | |
6450 | GOT, we don't need to generate a copy reloc. */ | |
6451 | if (!h->non_got_ref) | |
6452 | return TRUE; | |
6453 | ||
6454 | /* If -z nocopyreloc was given, we won't generate them either. */ | |
6455 | if (info->nocopyreloc) | |
6456 | { | |
6457 | h->non_got_ref = 0; | |
6458 | return TRUE; | |
6459 | } | |
6460 | ||
6461 | /* We must allocate the symbol in our .dynbss section, which will | |
6462 | become part of the .bss section of the executable. There will be | |
6463 | an entry for this symbol in the .dynsym section. The dynamic | |
6464 | object will contain position independent code, so all references | |
6465 | from the dynamic object to this symbol will go through the global | |
6466 | offset table. The dynamic linker will use the .dynsym entry to | |
6467 | determine the address it must put in the global offset table, so | |
6468 | both the dynamic object and the regular object will refer to the | |
6469 | same memory location for the variable. */ | |
6470 | ||
cec5225b | 6471 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
6472 | |
6473 | /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker | |
6474 | to copy the initial value out of the dynamic object and into the | |
6475 | runtime process image. */ | |
6476 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) | |
6477 | { | |
6478 | htab->srelbss->size += RELOC_SIZE (htab); | |
6479 | h->needs_copy = 1; | |
6480 | } | |
6481 | ||
6482 | s = htab->sdynbss; | |
6483 | ||
6cabe1ea | 6484 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
a06ea964 NC |
6485 | |
6486 | } | |
6487 | ||
6488 | static bfd_boolean | |
cec5225b | 6489 | elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number) |
a06ea964 NC |
6490 | { |
6491 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 6492 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
6493 | if (locals == NULL) |
6494 | { | |
6495 | locals = (struct elf_aarch64_local_symbol *) | |
6496 | bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol)); | |
6497 | if (locals == NULL) | |
6498 | return FALSE; | |
cec5225b | 6499 | elf_aarch64_locals (abfd) = locals; |
a06ea964 NC |
6500 | } |
6501 | return TRUE; | |
6502 | } | |
6503 | ||
cc0efaa8 MS |
6504 | /* Create the .got section to hold the global offset table. */ |
6505 | ||
6506 | static bfd_boolean | |
6507 | aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) | |
6508 | { | |
6509 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
6510 | flagword flags; | |
6511 | asection *s; | |
6512 | struct elf_link_hash_entry *h; | |
6513 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
6514 | ||
6515 | /* This function may be called more than once. */ | |
6516 | s = bfd_get_linker_section (abfd, ".got"); | |
6517 | if (s != NULL) | |
6518 | return TRUE; | |
6519 | ||
6520 | flags = bed->dynamic_sec_flags; | |
6521 | ||
6522 | s = bfd_make_section_anyway_with_flags (abfd, | |
6523 | (bed->rela_plts_and_copies_p | |
6524 | ? ".rela.got" : ".rel.got"), | |
6525 | (bed->dynamic_sec_flags | |
6526 | | SEC_READONLY)); | |
6527 | if (s == NULL | |
6528 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
6529 | return FALSE; | |
6530 | htab->srelgot = s; | |
6531 | ||
6532 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); | |
6533 | if (s == NULL | |
6534 | || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
6535 | return FALSE; | |
6536 | htab->sgot = s; | |
6537 | htab->sgot->size += GOT_ENTRY_SIZE; | |
6538 | ||
6539 | if (bed->want_got_sym) | |
6540 | { | |
6541 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
6542 | (or .got.plt) section. We don't do this in the linker script | |
6543 | because we don't want to define the symbol if we are not creating | |
6544 | a global offset table. */ | |
6545 | h = _bfd_elf_define_linkage_sym (abfd, info, s, | |
6546 | "_GLOBAL_OFFSET_TABLE_"); | |
6547 | elf_hash_table (info)->hgot = h; | |
6548 | if (h == NULL) | |
6549 | return FALSE; | |
6550 | } | |
6551 | ||
6552 | if (bed->want_got_plt) | |
6553 | { | |
6554 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); | |
6555 | if (s == NULL | |
6556 | || !bfd_set_section_alignment (abfd, s, | |
6557 | bed->s->log_file_align)) | |
6558 | return FALSE; | |
6559 | htab->sgotplt = s; | |
6560 | } | |
6561 | ||
6562 | /* The first bit of the global offset table is the header. */ | |
6563 | s->size += bed->got_header_size; | |
6564 | ||
6565 | return TRUE; | |
6566 | } | |
6567 | ||
a06ea964 NC |
6568 | /* Look through the relocs for a section during the first phase. */ |
6569 | ||
6570 | static bfd_boolean | |
cec5225b | 6571 | elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
a06ea964 NC |
6572 | asection *sec, const Elf_Internal_Rela *relocs) |
6573 | { | |
6574 | Elf_Internal_Shdr *symtab_hdr; | |
6575 | struct elf_link_hash_entry **sym_hashes; | |
6576 | const Elf_Internal_Rela *rel; | |
6577 | const Elf_Internal_Rela *rel_end; | |
6578 | asection *sreloc; | |
6579 | ||
cec5225b | 6580 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 6581 | |
0e1862bb | 6582 | if (bfd_link_relocatable (info)) |
a06ea964 NC |
6583 | return TRUE; |
6584 | ||
6585 | BFD_ASSERT (is_aarch64_elf (abfd)); | |
6586 | ||
cec5225b | 6587 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
6588 | sreloc = NULL; |
6589 | ||
6590 | symtab_hdr = &elf_symtab_hdr (abfd); | |
6591 | sym_hashes = elf_sym_hashes (abfd); | |
a06ea964 NC |
6592 | |
6593 | rel_end = relocs + sec->reloc_count; | |
6594 | for (rel = relocs; rel < rel_end; rel++) | |
6595 | { | |
6596 | struct elf_link_hash_entry *h; | |
6597 | unsigned long r_symndx; | |
6598 | unsigned int r_type; | |
a6bb11b2 | 6599 | bfd_reloc_code_real_type bfd_r_type; |
1419bbe5 | 6600 | Elf_Internal_Sym *isym; |
a06ea964 | 6601 | |
cec5225b YZ |
6602 | r_symndx = ELFNN_R_SYM (rel->r_info); |
6603 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 NC |
6604 | |
6605 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
6606 | { | |
6607 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd, | |
6608 | r_symndx); | |
6609 | return FALSE; | |
6610 | } | |
6611 | ||
ed5acf27 | 6612 | if (r_symndx < symtab_hdr->sh_info) |
1419bbe5 WN |
6613 | { |
6614 | /* A local symbol. */ | |
6615 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
6616 | abfd, r_symndx); | |
6617 | if (isym == NULL) | |
6618 | return FALSE; | |
6619 | ||
6620 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
6621 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
6622 | { | |
6623 | h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, | |
6624 | TRUE); | |
6625 | if (h == NULL) | |
6626 | return FALSE; | |
6627 | ||
6628 | /* Fake a STT_GNU_IFUNC symbol. */ | |
6629 | h->type = STT_GNU_IFUNC; | |
6630 | h->def_regular = 1; | |
6631 | h->ref_regular = 1; | |
6632 | h->forced_local = 1; | |
6633 | h->root.type = bfd_link_hash_defined; | |
6634 | } | |
6635 | else | |
6636 | h = NULL; | |
6637 | } | |
a06ea964 NC |
6638 | else |
6639 | { | |
6640 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
6641 | while (h->root.type == bfd_link_hash_indirect | |
6642 | || h->root.type == bfd_link_hash_warning) | |
6643 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 AM |
6644 | |
6645 | /* PR15323, ref flags aren't set for references in the same | |
6646 | object. */ | |
6647 | h->root.non_ir_ref = 1; | |
a06ea964 NC |
6648 | } |
6649 | ||
6650 | /* Could be done earlier, if h were already available. */ | |
a6bb11b2 | 6651 | bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx); |
a06ea964 | 6652 | |
1419bbe5 WN |
6653 | if (h != NULL) |
6654 | { | |
6655 | /* Create the ifunc sections for static executables. If we | |
6656 | never see an indirect function symbol nor we are building | |
6657 | a static executable, those sections will be empty and | |
6658 | won't appear in output. */ | |
6659 | switch (bfd_r_type) | |
6660 | { | |
6661 | default: | |
6662 | break; | |
6663 | ||
ce336788 JW |
6664 | case BFD_RELOC_AARCH64_ADD_LO12: |
6665 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: | |
6666 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
1419bbe5 | 6667 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 6668 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
1419bbe5 | 6669 | case BFD_RELOC_AARCH64_JUMP26: |
7018c030 | 6670 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
1419bbe5 | 6671 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 6672 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
1419bbe5 | 6673 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
ce336788 | 6674 | case BFD_RELOC_AARCH64_NN: |
1419bbe5 WN |
6675 | if (htab->root.dynobj == NULL) |
6676 | htab->root.dynobj = abfd; | |
6677 | if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info)) | |
6678 | return FALSE; | |
6679 | break; | |
6680 | } | |
6681 | ||
6682 | /* It is referenced by a non-shared object. */ | |
6683 | h->ref_regular = 1; | |
6684 | h->root.non_ir_ref = 1; | |
6685 | } | |
6686 | ||
a6bb11b2 | 6687 | switch (bfd_r_type) |
a06ea964 | 6688 | { |
a6bb11b2 | 6689 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
6690 | |
6691 | /* We don't need to handle relocs into sections not going into | |
6692 | the "real" output. */ | |
6693 | if ((sec->flags & SEC_ALLOC) == 0) | |
6694 | break; | |
6695 | ||
6696 | if (h != NULL) | |
6697 | { | |
0e1862bb | 6698 | if (!bfd_link_pic (info)) |
a06ea964 NC |
6699 | h->non_got_ref = 1; |
6700 | ||
6701 | h->plt.refcount += 1; | |
6702 | h->pointer_equality_needed = 1; | |
6703 | } | |
6704 | ||
6705 | /* No need to do anything if we're not creating a shared | |
6706 | object. */ | |
0e1862bb | 6707 | if (! bfd_link_pic (info)) |
a06ea964 NC |
6708 | break; |
6709 | ||
6710 | { | |
6711 | struct elf_dyn_relocs *p; | |
6712 | struct elf_dyn_relocs **head; | |
6713 | ||
6714 | /* We must copy these reloc types into the output file. | |
6715 | Create a reloc section in dynobj and make room for | |
6716 | this reloc. */ | |
6717 | if (sreloc == NULL) | |
6718 | { | |
6719 | if (htab->root.dynobj == NULL) | |
6720 | htab->root.dynobj = abfd; | |
6721 | ||
6722 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
0608afa7 | 6723 | (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE); |
a06ea964 NC |
6724 | |
6725 | if (sreloc == NULL) | |
6726 | return FALSE; | |
6727 | } | |
6728 | ||
6729 | /* If this is a global symbol, we count the number of | |
6730 | relocations we need for this symbol. */ | |
6731 | if (h != NULL) | |
6732 | { | |
cec5225b YZ |
6733 | struct elf_aarch64_link_hash_entry *eh; |
6734 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
6735 | head = &eh->dyn_relocs; |
6736 | } | |
6737 | else | |
6738 | { | |
6739 | /* Track dynamic relocs needed for local syms too. | |
6740 | We really need local syms available to do this | |
6741 | easily. Oh well. */ | |
6742 | ||
6743 | asection *s; | |
6744 | void **vpp; | |
a06ea964 NC |
6745 | |
6746 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
6747 | abfd, r_symndx); | |
6748 | if (isym == NULL) | |
6749 | return FALSE; | |
6750 | ||
6751 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
6752 | if (s == NULL) | |
6753 | s = sec; | |
6754 | ||
6755 | /* Beware of type punned pointers vs strict aliasing | |
6756 | rules. */ | |
6757 | vpp = &(elf_section_data (s)->local_dynrel); | |
6758 | head = (struct elf_dyn_relocs **) vpp; | |
6759 | } | |
6760 | ||
6761 | p = *head; | |
6762 | if (p == NULL || p->sec != sec) | |
6763 | { | |
6764 | bfd_size_type amt = sizeof *p; | |
6765 | p = ((struct elf_dyn_relocs *) | |
6766 | bfd_zalloc (htab->root.dynobj, amt)); | |
6767 | if (p == NULL) | |
6768 | return FALSE; | |
6769 | p->next = *head; | |
6770 | *head = p; | |
6771 | p->sec = sec; | |
6772 | } | |
6773 | ||
6774 | p->count += 1; | |
6775 | ||
6776 | } | |
6777 | break; | |
6778 | ||
6779 | /* RR: We probably want to keep a consistency check that | |
6780 | there are no dangling GOT_PAGE relocs. */ | |
a6bb11b2 | 6781 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
7bcccb57 | 6782 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
7018c030 | 6783 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
7bcccb57 | 6784 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 6785 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
7bcccb57 MS |
6786 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
6787 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: | |
6788 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
389b8029 | 6789 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
7bcccb57 MS |
6790 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
6791 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: | |
1ada945d | 6792 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a6bb11b2 | 6793 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
7bcccb57 | 6794 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 6795 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 6796 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 6797 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
7bcccb57 | 6798 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 6799 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
73f925cc | 6800 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 6801 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 6802 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
6803 | { |
6804 | unsigned got_type; | |
6805 | unsigned old_got_type; | |
6806 | ||
a6bb11b2 | 6807 | got_type = aarch64_reloc_got_type (bfd_r_type); |
a06ea964 NC |
6808 | |
6809 | if (h) | |
6810 | { | |
6811 | h->got.refcount += 1; | |
cec5225b | 6812 | old_got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
6813 | } |
6814 | else | |
6815 | { | |
6816 | struct elf_aarch64_local_symbol *locals; | |
6817 | ||
cec5225b | 6818 | if (!elfNN_aarch64_allocate_local_symbols |
a06ea964 NC |
6819 | (abfd, symtab_hdr->sh_info)) |
6820 | return FALSE; | |
6821 | ||
cec5225b | 6822 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
6823 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
6824 | locals[r_symndx].got_refcount += 1; | |
6825 | old_got_type = locals[r_symndx].got_type; | |
6826 | } | |
6827 | ||
6828 | /* If a variable is accessed with both general dynamic TLS | |
6829 | methods, two slots may be created. */ | |
6830 | if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type)) | |
6831 | got_type |= old_got_type; | |
6832 | ||
6833 | /* We will already have issued an error message if there | |
6834 | is a TLS/non-TLS mismatch, based on the symbol type. | |
6835 | So just combine any TLS types needed. */ | |
6836 | if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL | |
6837 | && got_type != GOT_NORMAL) | |
6838 | got_type |= old_got_type; | |
6839 | ||
6840 | /* If the symbol is accessed by both IE and GD methods, we | |
6841 | are able to relax. Turn off the GD flag, without | |
6842 | messing up with any other kind of TLS types that may be | |
6843 | involved. */ | |
6844 | if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type)) | |
6845 | got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD); | |
6846 | ||
6847 | if (old_got_type != got_type) | |
6848 | { | |
6849 | if (h != NULL) | |
cec5225b | 6850 | elf_aarch64_hash_entry (h)->got_type = got_type; |
a06ea964 NC |
6851 | else |
6852 | { | |
6853 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 6854 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
6855 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
6856 | locals[r_symndx].got_type = got_type; | |
6857 | } | |
6858 | } | |
6859 | ||
cc0efaa8 MS |
6860 | if (htab->root.dynobj == NULL) |
6861 | htab->root.dynobj = abfd; | |
6862 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
6863 | return FALSE; | |
a06ea964 NC |
6864 | break; |
6865 | } | |
6866 | ||
614b09ce JW |
6867 | case BFD_RELOC_AARCH64_MOVW_G0_NC: |
6868 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
6869 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
6870 | case BFD_RELOC_AARCH64_MOVW_G3: | |
0e1862bb | 6871 | if (bfd_link_pic (info)) |
614b09ce JW |
6872 | { |
6873 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
6874 | (*_bfd_error_handler) | |
6875 | (_("%B: relocation %s against `%s' can not be used when making " | |
6876 | "a shared object; recompile with -fPIC"), | |
6877 | abfd, elfNN_aarch64_howto_table[howto_index].name, | |
6878 | (h) ? h->root.root.string : "a local symbol"); | |
6879 | bfd_set_error (bfd_error_bad_value); | |
6880 | return FALSE; | |
6881 | } | |
6882 | ||
a6bb11b2 YZ |
6883 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
6884 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
6885 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
0e1862bb | 6886 | if (h != NULL && bfd_link_executable (info)) |
a06ea964 NC |
6887 | { |
6888 | /* If this reloc is in a read-only section, we might | |
6889 | need a copy reloc. We can't check reliably at this | |
6890 | stage whether the section is read-only, as input | |
6891 | sections have not yet been mapped to output sections. | |
6892 | Tentatively set the flag for now, and correct in | |
6893 | adjust_dynamic_symbol. */ | |
6894 | h->non_got_ref = 1; | |
6895 | h->plt.refcount += 1; | |
6896 | h->pointer_equality_needed = 1; | |
6897 | } | |
6898 | /* FIXME:: RR need to handle these in shared libraries | |
6899 | and essentially bomb out as these being non-PIC | |
6900 | relocations in shared libraries. */ | |
6901 | break; | |
6902 | ||
a6bb11b2 YZ |
6903 | case BFD_RELOC_AARCH64_CALL26: |
6904 | case BFD_RELOC_AARCH64_JUMP26: | |
a06ea964 NC |
6905 | /* If this is a local symbol then we resolve it |
6906 | directly without creating a PLT entry. */ | |
6907 | if (h == NULL) | |
6908 | continue; | |
6909 | ||
6910 | h->needs_plt = 1; | |
1419bbe5 WN |
6911 | if (h->plt.refcount <= 0) |
6912 | h->plt.refcount = 1; | |
6913 | else | |
6914 | h->plt.refcount += 1; | |
a06ea964 | 6915 | break; |
a6bb11b2 YZ |
6916 | |
6917 | default: | |
6918 | break; | |
a06ea964 NC |
6919 | } |
6920 | } | |
a6bb11b2 | 6921 | |
a06ea964 NC |
6922 | return TRUE; |
6923 | } | |
6924 | ||
6925 | /* Treat mapping symbols as special target symbols. */ | |
6926 | ||
6927 | static bfd_boolean | |
cec5225b | 6928 | elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
6929 | asymbol *sym) |
6930 | { | |
6931 | return bfd_is_aarch64_special_symbol_name (sym->name, | |
6932 | BFD_AARCH64_SPECIAL_SYM_TYPE_ANY); | |
6933 | } | |
6934 | ||
6935 | /* This is a copy of elf_find_function () from elf.c except that | |
6936 | AArch64 mapping symbols are ignored when looking for function names. */ | |
6937 | ||
6938 | static bfd_boolean | |
6939 | aarch64_elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, | |
a06ea964 | 6940 | asymbol **symbols, |
fb167eb2 | 6941 | asection *section, |
a06ea964 NC |
6942 | bfd_vma offset, |
6943 | const char **filename_ptr, | |
6944 | const char **functionname_ptr) | |
6945 | { | |
6946 | const char *filename = NULL; | |
6947 | asymbol *func = NULL; | |
6948 | bfd_vma low_func = 0; | |
6949 | asymbol **p; | |
6950 | ||
6951 | for (p = symbols; *p != NULL; p++) | |
6952 | { | |
6953 | elf_symbol_type *q; | |
6954 | ||
6955 | q = (elf_symbol_type *) * p; | |
6956 | ||
6957 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) | |
6958 | { | |
6959 | default: | |
6960 | break; | |
6961 | case STT_FILE: | |
6962 | filename = bfd_asymbol_name (&q->symbol); | |
6963 | break; | |
6964 | case STT_FUNC: | |
6965 | case STT_NOTYPE: | |
6966 | /* Skip mapping symbols. */ | |
6967 | if ((q->symbol.flags & BSF_LOCAL) | |
6968 | && (bfd_is_aarch64_special_symbol_name | |
6969 | (q->symbol.name, BFD_AARCH64_SPECIAL_SYM_TYPE_ANY))) | |
6970 | continue; | |
6971 | /* Fall through. */ | |
6972 | if (bfd_get_section (&q->symbol) == section | |
6973 | && q->symbol.value >= low_func && q->symbol.value <= offset) | |
6974 | { | |
6975 | func = (asymbol *) q; | |
6976 | low_func = q->symbol.value; | |
6977 | } | |
6978 | break; | |
6979 | } | |
6980 | } | |
6981 | ||
6982 | if (func == NULL) | |
6983 | return FALSE; | |
6984 | ||
6985 | if (filename_ptr) | |
6986 | *filename_ptr = filename; | |
6987 | if (functionname_ptr) | |
6988 | *functionname_ptr = bfd_asymbol_name (func); | |
6989 | ||
6990 | return TRUE; | |
6991 | } | |
6992 | ||
6993 | ||
6994 | /* Find the nearest line to a particular section and offset, for error | |
6995 | reporting. This code is a duplicate of the code in elf.c, except | |
6996 | that it uses aarch64_elf_find_function. */ | |
6997 | ||
6998 | static bfd_boolean | |
cec5225b | 6999 | elfNN_aarch64_find_nearest_line (bfd *abfd, |
a06ea964 | 7000 | asymbol **symbols, |
fb167eb2 | 7001 | asection *section, |
a06ea964 NC |
7002 | bfd_vma offset, |
7003 | const char **filename_ptr, | |
7004 | const char **functionname_ptr, | |
fb167eb2 AM |
7005 | unsigned int *line_ptr, |
7006 | unsigned int *discriminator_ptr) | |
a06ea964 NC |
7007 | { |
7008 | bfd_boolean found = FALSE; | |
7009 | ||
fb167eb2 | 7010 | if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset, |
a06ea964 | 7011 | filename_ptr, functionname_ptr, |
fb167eb2 AM |
7012 | line_ptr, discriminator_ptr, |
7013 | dwarf_debug_sections, 0, | |
a06ea964 NC |
7014 | &elf_tdata (abfd)->dwarf2_find_line_info)) |
7015 | { | |
7016 | if (!*functionname_ptr) | |
fb167eb2 | 7017 | aarch64_elf_find_function (abfd, symbols, section, offset, |
a06ea964 NC |
7018 | *filename_ptr ? NULL : filename_ptr, |
7019 | functionname_ptr); | |
7020 | ||
7021 | return TRUE; | |
7022 | } | |
7023 | ||
fb167eb2 AM |
7024 | /* Skip _bfd_dwarf1_find_nearest_line since no known AArch64 |
7025 | toolchain uses DWARF1. */ | |
7026 | ||
a06ea964 NC |
7027 | if (!_bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, |
7028 | &found, filename_ptr, | |
7029 | functionname_ptr, line_ptr, | |
7030 | &elf_tdata (abfd)->line_info)) | |
7031 | return FALSE; | |
7032 | ||
7033 | if (found && (*functionname_ptr || *line_ptr)) | |
7034 | return TRUE; | |
7035 | ||
7036 | if (symbols == NULL) | |
7037 | return FALSE; | |
7038 | ||
fb167eb2 | 7039 | if (!aarch64_elf_find_function (abfd, symbols, section, offset, |
a06ea964 NC |
7040 | filename_ptr, functionname_ptr)) |
7041 | return FALSE; | |
7042 | ||
7043 | *line_ptr = 0; | |
7044 | return TRUE; | |
7045 | } | |
7046 | ||
7047 | static bfd_boolean | |
cec5225b | 7048 | elfNN_aarch64_find_inliner_info (bfd *abfd, |
a06ea964 NC |
7049 | const char **filename_ptr, |
7050 | const char **functionname_ptr, | |
7051 | unsigned int *line_ptr) | |
7052 | { | |
7053 | bfd_boolean found; | |
7054 | found = _bfd_dwarf2_find_inliner_info | |
7055 | (abfd, filename_ptr, | |
7056 | functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info); | |
7057 | return found; | |
7058 | } | |
7059 | ||
7060 | ||
7061 | static void | |
cec5225b | 7062 | elfNN_aarch64_post_process_headers (bfd *abfd, |
1419bbe5 | 7063 | struct bfd_link_info *link_info) |
a06ea964 NC |
7064 | { |
7065 | Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */ | |
7066 | ||
7067 | i_ehdrp = elf_elfheader (abfd); | |
a06ea964 | 7068 | i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION; |
1419bbe5 | 7069 | |
78245035 | 7070 | _bfd_elf_post_process_headers (abfd, link_info); |
a06ea964 NC |
7071 | } |
7072 | ||
7073 | static enum elf_reloc_type_class | |
cec5225b | 7074 | elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
7e612e98 AM |
7075 | const asection *rel_sec ATTRIBUTE_UNUSED, |
7076 | const Elf_Internal_Rela *rela) | |
a06ea964 | 7077 | { |
cec5225b | 7078 | switch ((int) ELFNN_R_TYPE (rela->r_info)) |
a06ea964 | 7079 | { |
a6bb11b2 | 7080 | case AARCH64_R (RELATIVE): |
a06ea964 | 7081 | return reloc_class_relative; |
a6bb11b2 | 7082 | case AARCH64_R (JUMP_SLOT): |
a06ea964 | 7083 | return reloc_class_plt; |
a6bb11b2 | 7084 | case AARCH64_R (COPY): |
a06ea964 NC |
7085 | return reloc_class_copy; |
7086 | default: | |
7087 | return reloc_class_normal; | |
7088 | } | |
7089 | } | |
7090 | ||
a06ea964 NC |
7091 | /* Handle an AArch64 specific section when reading an object file. This is |
7092 | called when bfd_section_from_shdr finds a section with an unknown | |
7093 | type. */ | |
7094 | ||
7095 | static bfd_boolean | |
cec5225b | 7096 | elfNN_aarch64_section_from_shdr (bfd *abfd, |
a06ea964 NC |
7097 | Elf_Internal_Shdr *hdr, |
7098 | const char *name, int shindex) | |
7099 | { | |
7100 | /* There ought to be a place to keep ELF backend specific flags, but | |
7101 | at the moment there isn't one. We just keep track of the | |
7102 | sections by their name, instead. Fortunately, the ABI gives | |
7103 | names for all the AArch64 specific sections, so we will probably get | |
7104 | away with this. */ | |
7105 | switch (hdr->sh_type) | |
7106 | { | |
7107 | case SHT_AARCH64_ATTRIBUTES: | |
7108 | break; | |
7109 | ||
7110 | default: | |
7111 | return FALSE; | |
7112 | } | |
7113 | ||
7114 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
7115 | return FALSE; | |
7116 | ||
7117 | return TRUE; | |
7118 | } | |
7119 | ||
7120 | /* A structure used to record a list of sections, independently | |
7121 | of the next and prev fields in the asection structure. */ | |
7122 | typedef struct section_list | |
7123 | { | |
7124 | asection *sec; | |
7125 | struct section_list *next; | |
7126 | struct section_list *prev; | |
7127 | } | |
7128 | section_list; | |
7129 | ||
7130 | /* Unfortunately we need to keep a list of sections for which | |
7131 | an _aarch64_elf_section_data structure has been allocated. This | |
cec5225b | 7132 | is because it is possible for functions like elfNN_aarch64_write_section |
a06ea964 NC |
7133 | to be called on a section which has had an elf_data_structure |
7134 | allocated for it (and so the used_by_bfd field is valid) but | |
7135 | for which the AArch64 extended version of this structure - the | |
7136 | _aarch64_elf_section_data structure - has not been allocated. */ | |
7137 | static section_list *sections_with_aarch64_elf_section_data = NULL; | |
7138 | ||
7139 | static void | |
7140 | record_section_with_aarch64_elf_section_data (asection *sec) | |
7141 | { | |
7142 | struct section_list *entry; | |
7143 | ||
7144 | entry = bfd_malloc (sizeof (*entry)); | |
7145 | if (entry == NULL) | |
7146 | return; | |
7147 | entry->sec = sec; | |
7148 | entry->next = sections_with_aarch64_elf_section_data; | |
7149 | entry->prev = NULL; | |
7150 | if (entry->next != NULL) | |
7151 | entry->next->prev = entry; | |
7152 | sections_with_aarch64_elf_section_data = entry; | |
7153 | } | |
7154 | ||
7155 | static struct section_list * | |
7156 | find_aarch64_elf_section_entry (asection *sec) | |
7157 | { | |
7158 | struct section_list *entry; | |
7159 | static struct section_list *last_entry = NULL; | |
7160 | ||
7161 | /* This is a short cut for the typical case where the sections are added | |
7162 | to the sections_with_aarch64_elf_section_data list in forward order and | |
7163 | then looked up here in backwards order. This makes a real difference | |
7164 | to the ld-srec/sec64k.exp linker test. */ | |
7165 | entry = sections_with_aarch64_elf_section_data; | |
7166 | if (last_entry != NULL) | |
7167 | { | |
7168 | if (last_entry->sec == sec) | |
7169 | entry = last_entry; | |
7170 | else if (last_entry->next != NULL && last_entry->next->sec == sec) | |
7171 | entry = last_entry->next; | |
7172 | } | |
7173 | ||
7174 | for (; entry; entry = entry->next) | |
7175 | if (entry->sec == sec) | |
7176 | break; | |
7177 | ||
7178 | if (entry) | |
7179 | /* Record the entry prior to this one - it is the entry we are | |
7180 | most likely to want to locate next time. Also this way if we | |
7181 | have been called from | |
7182 | unrecord_section_with_aarch64_elf_section_data () we will not | |
7183 | be caching a pointer that is about to be freed. */ | |
7184 | last_entry = entry->prev; | |
7185 | ||
7186 | return entry; | |
7187 | } | |
7188 | ||
7189 | static void | |
7190 | unrecord_section_with_aarch64_elf_section_data (asection *sec) | |
7191 | { | |
7192 | struct section_list *entry; | |
7193 | ||
7194 | entry = find_aarch64_elf_section_entry (sec); | |
7195 | ||
7196 | if (entry) | |
7197 | { | |
7198 | if (entry->prev != NULL) | |
7199 | entry->prev->next = entry->next; | |
7200 | if (entry->next != NULL) | |
7201 | entry->next->prev = entry->prev; | |
7202 | if (entry == sections_with_aarch64_elf_section_data) | |
7203 | sections_with_aarch64_elf_section_data = entry->next; | |
7204 | free (entry); | |
7205 | } | |
7206 | } | |
7207 | ||
7208 | ||
7209 | typedef struct | |
7210 | { | |
7211 | void *finfo; | |
7212 | struct bfd_link_info *info; | |
7213 | asection *sec; | |
7214 | int sec_shndx; | |
7215 | int (*func) (void *, const char *, Elf_Internal_Sym *, | |
7216 | asection *, struct elf_link_hash_entry *); | |
7217 | } output_arch_syminfo; | |
7218 | ||
7219 | enum map_symbol_type | |
7220 | { | |
7221 | AARCH64_MAP_INSN, | |
7222 | AARCH64_MAP_DATA | |
7223 | }; | |
7224 | ||
7225 | ||
7226 | /* Output a single mapping symbol. */ | |
7227 | ||
7228 | static bfd_boolean | |
cec5225b | 7229 | elfNN_aarch64_output_map_sym (output_arch_syminfo *osi, |
a06ea964 NC |
7230 | enum map_symbol_type type, bfd_vma offset) |
7231 | { | |
7232 | static const char *names[2] = { "$x", "$d" }; | |
7233 | Elf_Internal_Sym sym; | |
7234 | ||
7235 | sym.st_value = (osi->sec->output_section->vma | |
7236 | + osi->sec->output_offset + offset); | |
7237 | sym.st_size = 0; | |
7238 | sym.st_other = 0; | |
7239 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
7240 | sym.st_shndx = osi->sec_shndx; | |
7241 | return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1; | |
7242 | } | |
7243 | ||
7244 | ||
7245 | ||
7246 | /* Output mapping symbols for PLT entries associated with H. */ | |
7247 | ||
7248 | static bfd_boolean | |
cec5225b | 7249 | elfNN_aarch64_output_plt_map (struct elf_link_hash_entry *h, void *inf) |
a06ea964 NC |
7250 | { |
7251 | output_arch_syminfo *osi = (output_arch_syminfo *) inf; | |
7252 | bfd_vma addr; | |
7253 | ||
7254 | if (h->root.type == bfd_link_hash_indirect) | |
7255 | return TRUE; | |
7256 | ||
7257 | if (h->root.type == bfd_link_hash_warning) | |
7258 | /* When warning symbols are created, they **replace** the "real" | |
7259 | entry in the hash table, thus we never get to see the real | |
7260 | symbol in a hash traversal. So look at it now. */ | |
7261 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7262 | ||
7263 | if (h->plt.offset == (bfd_vma) - 1) | |
7264 | return TRUE; | |
7265 | ||
7266 | addr = h->plt.offset; | |
7267 | if (addr == 32) | |
7268 | { | |
cec5225b | 7269 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 NC |
7270 | return FALSE; |
7271 | } | |
7272 | return TRUE; | |
7273 | } | |
7274 | ||
7275 | ||
7276 | /* Output a single local symbol for a generated stub. */ | |
7277 | ||
7278 | static bfd_boolean | |
cec5225b | 7279 | elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name, |
a06ea964 NC |
7280 | bfd_vma offset, bfd_vma size) |
7281 | { | |
7282 | Elf_Internal_Sym sym; | |
7283 | ||
7284 | sym.st_value = (osi->sec->output_section->vma | |
7285 | + osi->sec->output_offset + offset); | |
7286 | sym.st_size = size; | |
7287 | sym.st_other = 0; | |
7288 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
7289 | sym.st_shndx = osi->sec_shndx; | |
7290 | return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1; | |
7291 | } | |
7292 | ||
7293 | static bfd_boolean | |
7294 | aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) | |
7295 | { | |
cec5225b | 7296 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
7297 | asection *stub_sec; |
7298 | bfd_vma addr; | |
7299 | char *stub_name; | |
7300 | output_arch_syminfo *osi; | |
7301 | ||
7302 | /* Massage our args to the form they really have. */ | |
cec5225b | 7303 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
7304 | osi = (output_arch_syminfo *) in_arg; |
7305 | ||
7306 | stub_sec = stub_entry->stub_sec; | |
7307 | ||
7308 | /* Ensure this stub is attached to the current section being | |
7309 | processed. */ | |
7310 | if (stub_sec != osi->sec) | |
7311 | return TRUE; | |
7312 | ||
7313 | addr = (bfd_vma) stub_entry->stub_offset; | |
7314 | ||
7315 | stub_name = stub_entry->output_name; | |
7316 | ||
7317 | switch (stub_entry->stub_type) | |
7318 | { | |
7319 | case aarch64_stub_adrp_branch: | |
cec5225b | 7320 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, |
a06ea964 NC |
7321 | sizeof (aarch64_adrp_branch_stub))) |
7322 | return FALSE; | |
cec5225b | 7323 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 NC |
7324 | return FALSE; |
7325 | break; | |
7326 | case aarch64_stub_long_branch: | |
cec5225b | 7327 | if (!elfNN_aarch64_output_stub_sym |
a06ea964 NC |
7328 | (osi, stub_name, addr, sizeof (aarch64_long_branch_stub))) |
7329 | return FALSE; | |
cec5225b | 7330 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 | 7331 | return FALSE; |
cec5225b | 7332 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16)) |
a06ea964 NC |
7333 | return FALSE; |
7334 | break; | |
68fcca92 JW |
7335 | case aarch64_stub_erratum_835769_veneer: |
7336 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
7337 | sizeof (aarch64_erratum_835769_stub))) | |
7338 | return FALSE; | |
7339 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
7340 | return FALSE; | |
7341 | break; | |
4106101c MS |
7342 | case aarch64_stub_erratum_843419_veneer: |
7343 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
7344 | sizeof (aarch64_erratum_843419_stub))) | |
7345 | return FALSE; | |
7346 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
7347 | return FALSE; | |
7348 | break; | |
7349 | ||
a06ea964 | 7350 | default: |
8e2fe09f | 7351 | abort (); |
a06ea964 NC |
7352 | } |
7353 | ||
7354 | return TRUE; | |
7355 | } | |
7356 | ||
7357 | /* Output mapping symbols for linker generated sections. */ | |
7358 | ||
7359 | static bfd_boolean | |
cec5225b | 7360 | elfNN_aarch64_output_arch_local_syms (bfd *output_bfd, |
a06ea964 NC |
7361 | struct bfd_link_info *info, |
7362 | void *finfo, | |
7363 | int (*func) (void *, const char *, | |
7364 | Elf_Internal_Sym *, | |
7365 | asection *, | |
7366 | struct elf_link_hash_entry | |
7367 | *)) | |
7368 | { | |
7369 | output_arch_syminfo osi; | |
cec5225b | 7370 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 7371 | |
cec5225b | 7372 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7373 | |
7374 | osi.finfo = finfo; | |
7375 | osi.info = info; | |
7376 | osi.func = func; | |
7377 | ||
7378 | /* Long calls stubs. */ | |
7379 | if (htab->stub_bfd && htab->stub_bfd->sections) | |
7380 | { | |
7381 | asection *stub_sec; | |
7382 | ||
7383 | for (stub_sec = htab->stub_bfd->sections; | |
7384 | stub_sec != NULL; stub_sec = stub_sec->next) | |
7385 | { | |
7386 | /* Ignore non-stub sections. */ | |
7387 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
7388 | continue; | |
7389 | ||
7390 | osi.sec = stub_sec; | |
7391 | ||
7392 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
7393 | (output_bfd, osi.sec->output_section); | |
7394 | ||
61865519 MS |
7395 | /* The first instruction in a stub is always a branch. */ |
7396 | if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0)) | |
7397 | return FALSE; | |
7398 | ||
a06ea964 NC |
7399 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub, |
7400 | &osi); | |
7401 | } | |
7402 | } | |
7403 | ||
7404 | /* Finally, output mapping symbols for the PLT. */ | |
7405 | if (!htab->root.splt || htab->root.splt->size == 0) | |
7406 | return TRUE; | |
7407 | ||
7408 | /* For now live without mapping symbols for the plt. */ | |
7409 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
7410 | (output_bfd, htab->root.splt->output_section); | |
7411 | osi.sec = htab->root.splt; | |
7412 | ||
cec5225b | 7413 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_output_plt_map, |
a06ea964 NC |
7414 | (void *) &osi); |
7415 | ||
7416 | return TRUE; | |
7417 | ||
7418 | } | |
7419 | ||
7420 | /* Allocate target specific section data. */ | |
7421 | ||
7422 | static bfd_boolean | |
cec5225b | 7423 | elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec) |
a06ea964 NC |
7424 | { |
7425 | if (!sec->used_by_bfd) | |
7426 | { | |
7427 | _aarch64_elf_section_data *sdata; | |
7428 | bfd_size_type amt = sizeof (*sdata); | |
7429 | ||
7430 | sdata = bfd_zalloc (abfd, amt); | |
7431 | if (sdata == NULL) | |
7432 | return FALSE; | |
7433 | sec->used_by_bfd = sdata; | |
7434 | } | |
7435 | ||
7436 | record_section_with_aarch64_elf_section_data (sec); | |
7437 | ||
7438 | return _bfd_elf_new_section_hook (abfd, sec); | |
7439 | } | |
7440 | ||
7441 | ||
7442 | static void | |
7443 | unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
7444 | asection *sec, | |
7445 | void *ignore ATTRIBUTE_UNUSED) | |
7446 | { | |
7447 | unrecord_section_with_aarch64_elf_section_data (sec); | |
7448 | } | |
7449 | ||
7450 | static bfd_boolean | |
cec5225b | 7451 | elfNN_aarch64_close_and_cleanup (bfd *abfd) |
a06ea964 NC |
7452 | { |
7453 | if (abfd->sections) | |
7454 | bfd_map_over_sections (abfd, | |
7455 | unrecord_section_via_map_over_sections, NULL); | |
7456 | ||
7457 | return _bfd_elf_close_and_cleanup (abfd); | |
7458 | } | |
7459 | ||
7460 | static bfd_boolean | |
cec5225b | 7461 | elfNN_aarch64_bfd_free_cached_info (bfd *abfd) |
a06ea964 NC |
7462 | { |
7463 | if (abfd->sections) | |
7464 | bfd_map_over_sections (abfd, | |
7465 | unrecord_section_via_map_over_sections, NULL); | |
7466 | ||
7467 | return _bfd_free_cached_info (abfd); | |
7468 | } | |
7469 | ||
a06ea964 NC |
7470 | /* Create dynamic sections. This is different from the ARM backend in that |
7471 | the got, plt, gotplt and their relocation sections are all created in the | |
7472 | standard part of the bfd elf backend. */ | |
7473 | ||
7474 | static bfd_boolean | |
cec5225b | 7475 | elfNN_aarch64_create_dynamic_sections (bfd *dynobj, |
a06ea964 NC |
7476 | struct bfd_link_info *info) |
7477 | { | |
cec5225b | 7478 | struct elf_aarch64_link_hash_table *htab; |
cc0efaa8 MS |
7479 | |
7480 | /* We need to create .got section. */ | |
7481 | if (!aarch64_elf_create_got_section (dynobj, info)) | |
7482 | return FALSE; | |
a06ea964 NC |
7483 | |
7484 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
7485 | return FALSE; | |
7486 | ||
cec5225b | 7487 | htab = elf_aarch64_hash_table (info); |
a06ea964 | 7488 | htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss"); |
0e1862bb | 7489 | if (!bfd_link_pic (info)) |
a06ea964 NC |
7490 | htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss"); |
7491 | ||
0e1862bb | 7492 | if (!htab->sdynbss || (!bfd_link_pic (info) && !htab->srelbss)) |
a06ea964 NC |
7493 | abort (); |
7494 | ||
a06ea964 NC |
7495 | return TRUE; |
7496 | } | |
7497 | ||
7498 | ||
7499 | /* Allocate space in .plt, .got and associated reloc sections for | |
7500 | dynamic relocs. */ | |
7501 | ||
7502 | static bfd_boolean | |
cec5225b | 7503 | elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
a06ea964 NC |
7504 | { |
7505 | struct bfd_link_info *info; | |
cec5225b YZ |
7506 | struct elf_aarch64_link_hash_table *htab; |
7507 | struct elf_aarch64_link_hash_entry *eh; | |
a06ea964 NC |
7508 | struct elf_dyn_relocs *p; |
7509 | ||
7510 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
7511 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
7512 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
7513 | ||
7514 | There is no need to process bfd_link_hash_indirect symbols here | |
7515 | because we will also be presented with the concrete instance of | |
cec5225b | 7516 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been |
a06ea964 NC |
7517 | called to copy all relevant data from the generic to the concrete |
7518 | symbol instance. | |
7519 | */ | |
7520 | if (h->root.type == bfd_link_hash_indirect) | |
7521 | return TRUE; | |
7522 | ||
7523 | if (h->root.type == bfd_link_hash_warning) | |
7524 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7525 | ||
7526 | info = (struct bfd_link_info *) inf; | |
cec5225b | 7527 | htab = elf_aarch64_hash_table (info); |
a06ea964 | 7528 | |
1419bbe5 WN |
7529 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
7530 | here if it is defined and referenced in a non-shared object. */ | |
7531 | if (h->type == STT_GNU_IFUNC | |
7532 | && h->def_regular) | |
7533 | return TRUE; | |
7534 | else if (htab->root.dynamic_sections_created && h->plt.refcount > 0) | |
a06ea964 NC |
7535 | { |
7536 | /* Make sure this symbol is output as a dynamic symbol. | |
7537 | Undefined weak syms won't yet be marked as dynamic. */ | |
7538 | if (h->dynindx == -1 && !h->forced_local) | |
7539 | { | |
7540 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
7541 | return FALSE; | |
7542 | } | |
7543 | ||
0e1862bb | 7544 | if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
a06ea964 NC |
7545 | { |
7546 | asection *s = htab->root.splt; | |
7547 | ||
7548 | /* If this is the first .plt entry, make room for the special | |
7549 | first entry. */ | |
7550 | if (s->size == 0) | |
7551 | s->size += htab->plt_header_size; | |
7552 | ||
7553 | h->plt.offset = s->size; | |
7554 | ||
7555 | /* If this symbol is not defined in a regular file, and we are | |
7556 | not generating a shared library, then set the symbol to this | |
7557 | location in the .plt. This is required to make function | |
7558 | pointers compare as equal between the normal executable and | |
7559 | the shared library. */ | |
0e1862bb | 7560 | if (!bfd_link_pic (info) && !h->def_regular) |
a06ea964 NC |
7561 | { |
7562 | h->root.u.def.section = s; | |
7563 | h->root.u.def.value = h->plt.offset; | |
7564 | } | |
7565 | ||
7566 | /* Make room for this entry. For now we only create the | |
7567 | small model PLT entries. We later need to find a way | |
7568 | of relaxing into these from the large model PLT entries. */ | |
7569 | s->size += PLT_SMALL_ENTRY_SIZE; | |
7570 | ||
7571 | /* We also need to make an entry in the .got.plt section, which | |
7572 | will be placed in the .got section by the linker script. */ | |
7573 | htab->root.sgotplt->size += GOT_ENTRY_SIZE; | |
7574 | ||
7575 | /* We also need to make an entry in the .rela.plt section. */ | |
7576 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
7577 | ||
7578 | /* We need to ensure that all GOT entries that serve the PLT | |
7579 | are consecutive with the special GOT slots [0] [1] and | |
7580 | [2]. Any addtional relocations, such as | |
7581 | R_AARCH64_TLSDESC, must be placed after the PLT related | |
7582 | entries. We abuse the reloc_count such that during | |
7583 | sizing we adjust reloc_count to indicate the number of | |
7584 | PLT related reserved entries. In subsequent phases when | |
7585 | filling in the contents of the reloc entries, PLT related | |
7586 | entries are placed by computing their PLT index (0 | |
7587 | .. reloc_count). While other none PLT relocs are placed | |
7588 | at the slot indicated by reloc_count and reloc_count is | |
7589 | updated. */ | |
7590 | ||
7591 | htab->root.srelplt->reloc_count++; | |
7592 | } | |
7593 | else | |
7594 | { | |
7595 | h->plt.offset = (bfd_vma) - 1; | |
7596 | h->needs_plt = 0; | |
7597 | } | |
7598 | } | |
7599 | else | |
7600 | { | |
7601 | h->plt.offset = (bfd_vma) - 1; | |
7602 | h->needs_plt = 0; | |
7603 | } | |
7604 | ||
cec5225b | 7605 | eh = (struct elf_aarch64_link_hash_entry *) h; |
a06ea964 NC |
7606 | eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; |
7607 | ||
7608 | if (h->got.refcount > 0) | |
7609 | { | |
7610 | bfd_boolean dyn; | |
cec5225b | 7611 | unsigned got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
7612 | |
7613 | h->got.offset = (bfd_vma) - 1; | |
7614 | ||
7615 | dyn = htab->root.dynamic_sections_created; | |
7616 | ||
7617 | /* Make sure this symbol is output as a dynamic symbol. | |
7618 | Undefined weak syms won't yet be marked as dynamic. */ | |
7619 | if (dyn && h->dynindx == -1 && !h->forced_local) | |
7620 | { | |
7621 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
7622 | return FALSE; | |
7623 | } | |
7624 | ||
7625 | if (got_type == GOT_UNKNOWN) | |
7626 | { | |
7627 | } | |
7628 | else if (got_type == GOT_NORMAL) | |
7629 | { | |
7630 | h->got.offset = htab->root.sgot->size; | |
7631 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
7632 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7633 | || h->root.type != bfd_link_hash_undefweak) | |
0e1862bb | 7634 | && (bfd_link_pic (info) |
a06ea964 NC |
7635 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) |
7636 | { | |
7637 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
7638 | } | |
7639 | } | |
7640 | else | |
7641 | { | |
7642 | int indx; | |
7643 | if (got_type & GOT_TLSDESC_GD) | |
7644 | { | |
7645 | eh->tlsdesc_got_jump_table_offset = | |
7646 | (htab->root.sgotplt->size | |
7647 | - aarch64_compute_jump_table_size (htab)); | |
7648 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
7649 | h->got.offset = (bfd_vma) - 2; | |
7650 | } | |
7651 | ||
7652 | if (got_type & GOT_TLS_GD) | |
7653 | { | |
7654 | h->got.offset = htab->root.sgot->size; | |
7655 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
7656 | } | |
7657 | ||
7658 | if (got_type & GOT_TLS_IE) | |
7659 | { | |
7660 | h->got.offset = htab->root.sgot->size; | |
7661 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
7662 | } | |
7663 | ||
7664 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
7665 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7666 | || h->root.type != bfd_link_hash_undefweak) | |
0e1862bb | 7667 | && (bfd_link_pic (info) |
a06ea964 NC |
7668 | || indx != 0 |
7669 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
7670 | { | |
7671 | if (got_type & GOT_TLSDESC_GD) | |
7672 | { | |
7673 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
7674 | /* Note reloc_count not incremented here! We have | |
7675 | already adjusted reloc_count for this relocation | |
7676 | type. */ | |
7677 | ||
7678 | /* TLSDESC PLT is now needed, but not yet determined. */ | |
7679 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
7680 | } | |
7681 | ||
7682 | if (got_type & GOT_TLS_GD) | |
7683 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
7684 | ||
7685 | if (got_type & GOT_TLS_IE) | |
7686 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
7687 | } | |
7688 | } | |
7689 | } | |
7690 | else | |
7691 | { | |
7692 | h->got.offset = (bfd_vma) - 1; | |
7693 | } | |
7694 | ||
7695 | if (eh->dyn_relocs == NULL) | |
7696 | return TRUE; | |
7697 | ||
7698 | /* In the shared -Bsymbolic case, discard space allocated for | |
7699 | dynamic pc-relative relocs against symbols which turn out to be | |
7700 | defined in regular objects. For the normal shared case, discard | |
7701 | space for pc-relative relocs that have become local due to symbol | |
7702 | visibility changes. */ | |
7703 | ||
0e1862bb | 7704 | if (bfd_link_pic (info)) |
a06ea964 NC |
7705 | { |
7706 | /* Relocs that use pc_count are those that appear on a call | |
7707 | insn, or certain REL relocs that can generated via assembly. | |
7708 | We want calls to protected symbols to resolve directly to the | |
7709 | function rather than going via the plt. If people want | |
7710 | function pointer comparisons to work as expected then they | |
7711 | should avoid writing weird assembly. */ | |
7712 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
7713 | { | |
7714 | struct elf_dyn_relocs **pp; | |
7715 | ||
7716 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) | |
7717 | { | |
7718 | p->count -= p->pc_count; | |
7719 | p->pc_count = 0; | |
7720 | if (p->count == 0) | |
7721 | *pp = p->next; | |
7722 | else | |
7723 | pp = &p->next; | |
7724 | } | |
7725 | } | |
7726 | ||
7727 | /* Also discard relocs on undefined weak syms with non-default | |
7728 | visibility. */ | |
7729 | if (eh->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak) | |
7730 | { | |
7731 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
7732 | eh->dyn_relocs = NULL; | |
7733 | ||
7734 | /* Make sure undefined weak symbols are output as a dynamic | |
7735 | symbol in PIEs. */ | |
7736 | else if (h->dynindx == -1 | |
7737 | && !h->forced_local | |
7738 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
7739 | return FALSE; | |
7740 | } | |
7741 | ||
7742 | } | |
7743 | else if (ELIMINATE_COPY_RELOCS) | |
7744 | { | |
7745 | /* For the non-shared case, discard space for relocs against | |
7746 | symbols which turn out to need copy relocs or are not | |
7747 | dynamic. */ | |
7748 | ||
7749 | if (!h->non_got_ref | |
7750 | && ((h->def_dynamic | |
7751 | && !h->def_regular) | |
7752 | || (htab->root.dynamic_sections_created | |
7753 | && (h->root.type == bfd_link_hash_undefweak | |
7754 | || h->root.type == bfd_link_hash_undefined)))) | |
7755 | { | |
7756 | /* Make sure this symbol is output as a dynamic symbol. | |
7757 | Undefined weak syms won't yet be marked as dynamic. */ | |
7758 | if (h->dynindx == -1 | |
7759 | && !h->forced_local | |
7760 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
7761 | return FALSE; | |
7762 | ||
7763 | /* If that succeeded, we know we'll be keeping all the | |
7764 | relocs. */ | |
7765 | if (h->dynindx != -1) | |
7766 | goto keep; | |
7767 | } | |
7768 | ||
7769 | eh->dyn_relocs = NULL; | |
7770 | ||
7771 | keep:; | |
7772 | } | |
7773 | ||
7774 | /* Finally, allocate space. */ | |
7775 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7776 | { | |
7777 | asection *sreloc; | |
7778 | ||
7779 | sreloc = elf_section_data (p->sec)->sreloc; | |
7780 | ||
7781 | BFD_ASSERT (sreloc != NULL); | |
7782 | ||
7783 | sreloc->size += p->count * RELOC_SIZE (htab); | |
7784 | } | |
7785 | ||
7786 | return TRUE; | |
7787 | } | |
7788 | ||
1419bbe5 WN |
7789 | /* Allocate space in .plt, .got and associated reloc sections for |
7790 | ifunc dynamic relocs. */ | |
7791 | ||
7792 | static bfd_boolean | |
7793 | elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h, | |
7794 | void *inf) | |
7795 | { | |
7796 | struct bfd_link_info *info; | |
7797 | struct elf_aarch64_link_hash_table *htab; | |
7798 | struct elf_aarch64_link_hash_entry *eh; | |
7799 | ||
7800 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
7801 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
7802 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
7803 | ||
7804 | There is no need to process bfd_link_hash_indirect symbols here | |
7805 | because we will also be presented with the concrete instance of | |
7806 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been | |
7807 | called to copy all relevant data from the generic to the concrete | |
7808 | symbol instance. | |
7809 | */ | |
7810 | if (h->root.type == bfd_link_hash_indirect) | |
7811 | return TRUE; | |
7812 | ||
7813 | if (h->root.type == bfd_link_hash_warning) | |
7814 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7815 | ||
7816 | info = (struct bfd_link_info *) inf; | |
7817 | htab = elf_aarch64_hash_table (info); | |
7818 | ||
7819 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
7820 | ||
7821 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it | |
7822 | here if it is defined and referenced in a non-shared object. */ | |
7823 | if (h->type == STT_GNU_IFUNC | |
7824 | && h->def_regular) | |
7825 | return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, | |
7826 | &eh->dyn_relocs, | |
7827 | htab->plt_entry_size, | |
7828 | htab->plt_header_size, | |
7829 | GOT_ENTRY_SIZE); | |
7830 | return TRUE; | |
7831 | } | |
7832 | ||
7833 | /* Allocate space in .plt, .got and associated reloc sections for | |
7834 | local dynamic relocs. */ | |
7835 | ||
7836 | static bfd_boolean | |
7837 | elfNN_aarch64_allocate_local_dynrelocs (void **slot, void *inf) | |
7838 | { | |
7839 | struct elf_link_hash_entry *h | |
7840 | = (struct elf_link_hash_entry *) *slot; | |
7841 | ||
7842 | if (h->type != STT_GNU_IFUNC | |
7843 | || !h->def_regular | |
7844 | || !h->ref_regular | |
7845 | || !h->forced_local | |
7846 | || h->root.type != bfd_link_hash_defined) | |
7847 | abort (); | |
7848 | ||
7849 | return elfNN_aarch64_allocate_dynrelocs (h, inf); | |
7850 | } | |
7851 | ||
7852 | /* Allocate space in .plt, .got and associated reloc sections for | |
7853 | local ifunc dynamic relocs. */ | |
7854 | ||
7855 | static bfd_boolean | |
7856 | elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf) | |
7857 | { | |
7858 | struct elf_link_hash_entry *h | |
7859 | = (struct elf_link_hash_entry *) *slot; | |
7860 | ||
7861 | if (h->type != STT_GNU_IFUNC | |
7862 | || !h->def_regular | |
7863 | || !h->ref_regular | |
7864 | || !h->forced_local | |
7865 | || h->root.type != bfd_link_hash_defined) | |
7866 | abort (); | |
7867 | ||
7868 | return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf); | |
7869 | } | |
a06ea964 | 7870 | |
c2170589 JW |
7871 | /* Find any dynamic relocs that apply to read-only sections. */ |
7872 | ||
7873 | static bfd_boolean | |
7874 | aarch64_readonly_dynrelocs (struct elf_link_hash_entry * h, void * inf) | |
7875 | { | |
7876 | struct elf_aarch64_link_hash_entry * eh; | |
7877 | struct elf_dyn_relocs * p; | |
7878 | ||
7879 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
7880 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7881 | { | |
7882 | asection *s = p->sec; | |
7883 | ||
7884 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7885 | { | |
7886 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
7887 | ||
7888 | info->flags |= DF_TEXTREL; | |
7889 | ||
7890 | /* Not an error, just cut short the traversal. */ | |
7891 | return FALSE; | |
7892 | } | |
7893 | } | |
7894 | return TRUE; | |
7895 | } | |
7896 | ||
a06ea964 NC |
7897 | /* This is the most important function of all . Innocuosly named |
7898 | though ! */ | |
7899 | static bfd_boolean | |
cec5225b | 7900 | elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
7901 | struct bfd_link_info *info) |
7902 | { | |
cec5225b | 7903 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
7904 | bfd *dynobj; |
7905 | asection *s; | |
7906 | bfd_boolean relocs; | |
7907 | bfd *ibfd; | |
7908 | ||
cec5225b | 7909 | htab = elf_aarch64_hash_table ((info)); |
a06ea964 NC |
7910 | dynobj = htab->root.dynobj; |
7911 | ||
7912 | BFD_ASSERT (dynobj != NULL); | |
7913 | ||
7914 | if (htab->root.dynamic_sections_created) | |
7915 | { | |
0e1862bb | 7916 | if (bfd_link_executable (info)) |
a06ea964 NC |
7917 | { |
7918 | s = bfd_get_linker_section (dynobj, ".interp"); | |
7919 | if (s == NULL) | |
7920 | abort (); | |
7921 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
7922 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
7923 | } | |
7924 | } | |
7925 | ||
7926 | /* Set up .got offsets for local syms, and space for local dynamic | |
7927 | relocs. */ | |
c72f2fb2 | 7928 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
a06ea964 NC |
7929 | { |
7930 | struct elf_aarch64_local_symbol *locals = NULL; | |
7931 | Elf_Internal_Shdr *symtab_hdr; | |
7932 | asection *srel; | |
7933 | unsigned int i; | |
7934 | ||
7935 | if (!is_aarch64_elf (ibfd)) | |
7936 | continue; | |
7937 | ||
7938 | for (s = ibfd->sections; s != NULL; s = s->next) | |
7939 | { | |
7940 | struct elf_dyn_relocs *p; | |
7941 | ||
7942 | for (p = (struct elf_dyn_relocs *) | |
7943 | (elf_section_data (s)->local_dynrel); p != NULL; p = p->next) | |
7944 | { | |
7945 | if (!bfd_is_abs_section (p->sec) | |
7946 | && bfd_is_abs_section (p->sec->output_section)) | |
7947 | { | |
7948 | /* Input section has been discarded, either because | |
7949 | it is a copy of a linkonce section or due to | |
7950 | linker script /DISCARD/, so we'll be discarding | |
7951 | the relocs too. */ | |
7952 | } | |
7953 | else if (p->count != 0) | |
7954 | { | |
7955 | srel = elf_section_data (p->sec)->sreloc; | |
7956 | srel->size += p->count * RELOC_SIZE (htab); | |
7957 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
7958 | info->flags |= DF_TEXTREL; | |
7959 | } | |
7960 | } | |
7961 | } | |
7962 | ||
cec5225b | 7963 | locals = elf_aarch64_locals (ibfd); |
a06ea964 NC |
7964 | if (!locals) |
7965 | continue; | |
7966 | ||
7967 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
7968 | srel = htab->root.srelgot; | |
7969 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
7970 | { | |
7971 | locals[i].got_offset = (bfd_vma) - 1; | |
7972 | locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
7973 | if (locals[i].got_refcount > 0) | |
7974 | { | |
7975 | unsigned got_type = locals[i].got_type; | |
7976 | if (got_type & GOT_TLSDESC_GD) | |
7977 | { | |
7978 | locals[i].tlsdesc_got_jump_table_offset = | |
7979 | (htab->root.sgotplt->size | |
7980 | - aarch64_compute_jump_table_size (htab)); | |
7981 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
7982 | locals[i].got_offset = (bfd_vma) - 2; | |
7983 | } | |
7984 | ||
7985 | if (got_type & GOT_TLS_GD) | |
7986 | { | |
7987 | locals[i].got_offset = htab->root.sgot->size; | |
7988 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
7989 | } | |
7990 | ||
b53b1bed JW |
7991 | if (got_type & GOT_TLS_IE |
7992 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
7993 | { |
7994 | locals[i].got_offset = htab->root.sgot->size; | |
7995 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
7996 | } | |
7997 | ||
7998 | if (got_type == GOT_UNKNOWN) | |
7999 | { | |
8000 | } | |
8001 | ||
0e1862bb | 8002 | if (bfd_link_pic (info)) |
a06ea964 NC |
8003 | { |
8004 | if (got_type & GOT_TLSDESC_GD) | |
8005 | { | |
8006 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8007 | /* Note RELOC_COUNT not incremented here! */ | |
8008 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
8009 | } | |
8010 | ||
8011 | if (got_type & GOT_TLS_GD) | |
8012 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
8013 | ||
b53b1bed JW |
8014 | if (got_type & GOT_TLS_IE |
8015 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
8016 | htab->root.srelgot->size += RELOC_SIZE (htab); |
8017 | } | |
8018 | } | |
8019 | else | |
8020 | { | |
8021 | locals[i].got_refcount = (bfd_vma) - 1; | |
8022 | } | |
8023 | } | |
8024 | } | |
8025 | ||
8026 | ||
8027 | /* Allocate global sym .plt and .got entries, and space for global | |
8028 | sym dynamic relocs. */ | |
cec5225b | 8029 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs, |
a06ea964 NC |
8030 | info); |
8031 | ||
1419bbe5 WN |
8032 | /* Allocate global ifunc sym .plt and .got entries, and space for global |
8033 | ifunc sym dynamic relocs. */ | |
8034 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs, | |
8035 | info); | |
8036 | ||
8037 | /* Allocate .plt and .got entries, and space for local symbols. */ | |
8038 | htab_traverse (htab->loc_hash_table, | |
8039 | elfNN_aarch64_allocate_local_dynrelocs, | |
8040 | info); | |
8041 | ||
8042 | /* Allocate .plt and .got entries, and space for local ifunc symbols. */ | |
8043 | htab_traverse (htab->loc_hash_table, | |
8044 | elfNN_aarch64_allocate_local_ifunc_dynrelocs, | |
8045 | info); | |
a06ea964 NC |
8046 | |
8047 | /* For every jump slot reserved in the sgotplt, reloc_count is | |
8048 | incremented. However, when we reserve space for TLS descriptors, | |
8049 | it's not incremented, so in order to compute the space reserved | |
8050 | for them, it suffices to multiply the reloc count by the jump | |
8051 | slot size. */ | |
8052 | ||
8053 | if (htab->root.srelplt) | |
8847944f | 8054 | htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab); |
a06ea964 NC |
8055 | |
8056 | if (htab->tlsdesc_plt) | |
8057 | { | |
8058 | if (htab->root.splt->size == 0) | |
8059 | htab->root.splt->size += PLT_ENTRY_SIZE; | |
8060 | ||
8061 | htab->tlsdesc_plt = htab->root.splt->size; | |
8062 | htab->root.splt->size += PLT_TLSDESC_ENTRY_SIZE; | |
8063 | ||
8064 | /* If we're not using lazy TLS relocations, don't generate the | |
8065 | GOT entry required. */ | |
8066 | if (!(info->flags & DF_BIND_NOW)) | |
8067 | { | |
8068 | htab->dt_tlsdesc_got = htab->root.sgot->size; | |
8069 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8070 | } | |
8071 | } | |
8072 | ||
68fcca92 | 8073 | /* Init mapping symbols information to use later to distingush between |
4106101c MS |
8074 | code and data while scanning for errata. */ |
8075 | if (htab->fix_erratum_835769 || htab->fix_erratum_843419) | |
68fcca92 JW |
8076 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
8077 | { | |
8078 | if (!is_aarch64_elf (ibfd)) | |
8079 | continue; | |
8080 | bfd_elfNN_aarch64_init_maps (ibfd); | |
8081 | } | |
8082 | ||
a06ea964 NC |
8083 | /* We now have determined the sizes of the various dynamic sections. |
8084 | Allocate memory for them. */ | |
8085 | relocs = FALSE; | |
8086 | for (s = dynobj->sections; s != NULL; s = s->next) | |
8087 | { | |
8088 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
8089 | continue; | |
8090 | ||
8091 | if (s == htab->root.splt | |
8092 | || s == htab->root.sgot | |
8093 | || s == htab->root.sgotplt | |
8094 | || s == htab->root.iplt | |
8095 | || s == htab->root.igotplt || s == htab->sdynbss) | |
8096 | { | |
8097 | /* Strip this section if we don't need it; see the | |
8098 | comment below. */ | |
8099 | } | |
8100 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) | |
8101 | { | |
8102 | if (s->size != 0 && s != htab->root.srelplt) | |
8103 | relocs = TRUE; | |
8104 | ||
8105 | /* We use the reloc_count field as a counter if we need | |
8106 | to copy relocs into the output file. */ | |
8107 | if (s != htab->root.srelplt) | |
8108 | s->reloc_count = 0; | |
8109 | } | |
8110 | else | |
8111 | { | |
8112 | /* It's not one of our sections, so don't allocate space. */ | |
8113 | continue; | |
8114 | } | |
8115 | ||
8116 | if (s->size == 0) | |
8117 | { | |
8118 | /* If we don't need this section, strip it from the | |
8119 | output file. This is mostly to handle .rela.bss and | |
8120 | .rela.plt. We must create both sections in | |
8121 | create_dynamic_sections, because they must be created | |
8122 | before the linker maps input sections to output | |
8123 | sections. The linker does that before | |
8124 | adjust_dynamic_symbol is called, and it is that | |
8125 | function which decides whether anything needs to go | |
8126 | into these sections. */ | |
8127 | ||
8128 | s->flags |= SEC_EXCLUDE; | |
8129 | continue; | |
8130 | } | |
8131 | ||
8132 | if ((s->flags & SEC_HAS_CONTENTS) == 0) | |
8133 | continue; | |
8134 | ||
8135 | /* Allocate memory for the section contents. We use bfd_zalloc | |
8136 | here in case unused entries are not reclaimed before the | |
8137 | section's contents are written out. This should not happen, | |
8138 | but this way if it does, we get a R_AARCH64_NONE reloc instead | |
8139 | of garbage. */ | |
8140 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
8141 | if (s->contents == NULL) | |
8142 | return FALSE; | |
8143 | } | |
8144 | ||
8145 | if (htab->root.dynamic_sections_created) | |
8146 | { | |
8147 | /* Add some entries to the .dynamic section. We fill in the | |
cec5225b | 8148 | values later, in elfNN_aarch64_finish_dynamic_sections, but we |
a06ea964 NC |
8149 | must add the entries now so that we get the correct size for |
8150 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
8151 | dynamic linker and used by the debugger. */ | |
8152 | #define add_dynamic_entry(TAG, VAL) \ | |
8153 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
8154 | ||
0e1862bb | 8155 | if (bfd_link_executable (info)) |
a06ea964 NC |
8156 | { |
8157 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
8158 | return FALSE; | |
8159 | } | |
8160 | ||
8161 | if (htab->root.splt->size != 0) | |
8162 | { | |
8163 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
8164 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
8165 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
8166 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
8167 | return FALSE; | |
8168 | ||
8169 | if (htab->tlsdesc_plt | |
8170 | && (!add_dynamic_entry (DT_TLSDESC_PLT, 0) | |
8171 | || !add_dynamic_entry (DT_TLSDESC_GOT, 0))) | |
8172 | return FALSE; | |
8173 | } | |
8174 | ||
8175 | if (relocs) | |
8176 | { | |
8177 | if (!add_dynamic_entry (DT_RELA, 0) | |
8178 | || !add_dynamic_entry (DT_RELASZ, 0) | |
8179 | || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) | |
8180 | return FALSE; | |
8181 | ||
8182 | /* If any dynamic relocs apply to a read-only section, | |
8183 | then we need a DT_TEXTREL entry. */ | |
c2170589 JW |
8184 | if ((info->flags & DF_TEXTREL) == 0) |
8185 | elf_link_hash_traverse (& htab->root, aarch64_readonly_dynrelocs, | |
8186 | info); | |
8187 | ||
a06ea964 NC |
8188 | if ((info->flags & DF_TEXTREL) != 0) |
8189 | { | |
8190 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
8191 | return FALSE; | |
8192 | } | |
8193 | } | |
8194 | } | |
8195 | #undef add_dynamic_entry | |
8196 | ||
8197 | return TRUE; | |
a06ea964 NC |
8198 | } |
8199 | ||
8200 | static inline void | |
caed7120 YZ |
8201 | elf_aarch64_update_plt_entry (bfd *output_bfd, |
8202 | bfd_reloc_code_real_type r_type, | |
8203 | bfd_byte *plt_entry, bfd_vma value) | |
a06ea964 | 8204 | { |
caed7120 YZ |
8205 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type); |
8206 | ||
8207 | _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value); | |
a06ea964 NC |
8208 | } |
8209 | ||
8210 | static void | |
cec5225b YZ |
8211 | elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h, |
8212 | struct elf_aarch64_link_hash_table | |
1419bbe5 WN |
8213 | *htab, bfd *output_bfd, |
8214 | struct bfd_link_info *info) | |
a06ea964 NC |
8215 | { |
8216 | bfd_byte *plt_entry; | |
8217 | bfd_vma plt_index; | |
8218 | bfd_vma got_offset; | |
8219 | bfd_vma gotplt_entry_address; | |
8220 | bfd_vma plt_entry_address; | |
8221 | Elf_Internal_Rela rela; | |
8222 | bfd_byte *loc; | |
1419bbe5 WN |
8223 | asection *plt, *gotplt, *relplt; |
8224 | ||
8225 | /* When building a static executable, use .iplt, .igot.plt and | |
8226 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
8227 | if (htab->root.splt != NULL) | |
8228 | { | |
8229 | plt = htab->root.splt; | |
8230 | gotplt = htab->root.sgotplt; | |
8231 | relplt = htab->root.srelplt; | |
8232 | } | |
8233 | else | |
8234 | { | |
8235 | plt = htab->root.iplt; | |
8236 | gotplt = htab->root.igotplt; | |
8237 | relplt = htab->root.irelplt; | |
8238 | } | |
8239 | ||
8240 | /* Get the index in the procedure linkage table which | |
8241 | corresponds to this symbol. This is the index of this symbol | |
8242 | in all the symbols for which we are making plt entries. The | |
8243 | first entry in the procedure linkage table is reserved. | |
a06ea964 | 8244 | |
1419bbe5 WN |
8245 | Get the offset into the .got table of the entry that |
8246 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE | |
8247 | bytes. The first three are reserved for the dynamic linker. | |
692e2b8b | 8248 | |
1419bbe5 WN |
8249 | For static executables, we don't reserve anything. */ |
8250 | ||
8251 | if (plt == htab->root.splt) | |
8252 | { | |
8253 | plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size; | |
8254 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
8255 | } | |
8256 | else | |
8257 | { | |
8258 | plt_index = h->plt.offset / htab->plt_entry_size; | |
8259 | got_offset = plt_index * GOT_ENTRY_SIZE; | |
8260 | } | |
8261 | ||
8262 | plt_entry = plt->contents + h->plt.offset; | |
8263 | plt_entry_address = plt->output_section->vma | |
f44a1f8e | 8264 | + plt->output_offset + h->plt.offset; |
1419bbe5 WN |
8265 | gotplt_entry_address = gotplt->output_section->vma + |
8266 | gotplt->output_offset + got_offset; | |
a06ea964 NC |
8267 | |
8268 | /* Copy in the boiler-plate for the PLTn entry. */ | |
cec5225b | 8269 | memcpy (plt_entry, elfNN_aarch64_small_plt_entry, PLT_SMALL_ENTRY_SIZE); |
a06ea964 NC |
8270 | |
8271 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
8272 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 YZ |
8273 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
8274 | plt_entry, | |
8275 | PG (gotplt_entry_address) - | |
8276 | PG (plt_entry_address)); | |
a06ea964 NC |
8277 | |
8278 | /* Fill in the lo12 bits for the load from the pltgot. */ | |
caed7120 YZ |
8279 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
8280 | plt_entry + 4, | |
8281 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 | 8282 | |
9aff4b7a | 8283 | /* Fill in the lo12 bits for the add from the pltgot entry. */ |
caed7120 YZ |
8284 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
8285 | plt_entry + 8, | |
8286 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 NC |
8287 | |
8288 | /* All the GOTPLT Entries are essentially initialized to PLT0. */ | |
cec5225b | 8289 | bfd_put_NN (output_bfd, |
1419bbe5 WN |
8290 | plt->output_section->vma + plt->output_offset, |
8291 | gotplt->contents + got_offset); | |
a06ea964 | 8292 | |
a06ea964 | 8293 | rela.r_offset = gotplt_entry_address; |
1419bbe5 WN |
8294 | |
8295 | if (h->dynindx == -1 | |
0e1862bb | 8296 | || ((bfd_link_executable (info) |
1419bbe5 WN |
8297 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
8298 | && h->def_regular | |
8299 | && h->type == STT_GNU_IFUNC)) | |
8300 | { | |
8301 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
8302 | R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */ | |
8303 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
8304 | rela.r_addend = (h->root.u.def.value | |
8305 | + h->root.u.def.section->output_section->vma | |
8306 | + h->root.u.def.section->output_offset); | |
8307 | } | |
8308 | else | |
8309 | { | |
8310 | /* Fill in the entry in the .rela.plt section. */ | |
8311 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT)); | |
8312 | rela.r_addend = 0; | |
8313 | } | |
a06ea964 NC |
8314 | |
8315 | /* Compute the relocation entry to used based on PLT index and do | |
8316 | not adjust reloc_count. The reloc_count has already been adjusted | |
8317 | to account for this entry. */ | |
1419bbe5 | 8318 | loc = relplt->contents + plt_index * RELOC_SIZE (htab); |
cec5225b | 8319 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
8320 | } |
8321 | ||
8322 | /* Size sections even though they're not dynamic. We use it to setup | |
8323 | _TLS_MODULE_BASE_, if needed. */ | |
8324 | ||
8325 | static bfd_boolean | |
cec5225b | 8326 | elfNN_aarch64_always_size_sections (bfd *output_bfd, |
a06ea964 NC |
8327 | struct bfd_link_info *info) |
8328 | { | |
8329 | asection *tls_sec; | |
8330 | ||
0e1862bb | 8331 | if (bfd_link_relocatable (info)) |
a06ea964 NC |
8332 | return TRUE; |
8333 | ||
8334 | tls_sec = elf_hash_table (info)->tls_sec; | |
8335 | ||
8336 | if (tls_sec) | |
8337 | { | |
8338 | struct elf_link_hash_entry *tlsbase; | |
8339 | ||
8340 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
8341 | "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE); | |
8342 | ||
8343 | if (tlsbase) | |
8344 | { | |
8345 | struct bfd_link_hash_entry *h = NULL; | |
8346 | const struct elf_backend_data *bed = | |
8347 | get_elf_backend_data (output_bfd); | |
8348 | ||
8349 | if (!(_bfd_generic_link_add_one_symbol | |
8350 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
8351 | tls_sec, 0, NULL, FALSE, bed->collect, &h))) | |
8352 | return FALSE; | |
8353 | ||
8354 | tlsbase->type = STT_TLS; | |
8355 | tlsbase = (struct elf_link_hash_entry *) h; | |
8356 | tlsbase->def_regular = 1; | |
8357 | tlsbase->other = STV_HIDDEN; | |
8358 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
8359 | } | |
8360 | } | |
8361 | ||
8362 | return TRUE; | |
8363 | } | |
8364 | ||
8365 | /* Finish up dynamic symbol handling. We set the contents of various | |
8366 | dynamic sections here. */ | |
8367 | static bfd_boolean | |
cec5225b | 8368 | elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd, |
a06ea964 NC |
8369 | struct bfd_link_info *info, |
8370 | struct elf_link_hash_entry *h, | |
8371 | Elf_Internal_Sym *sym) | |
8372 | { | |
cec5225b YZ |
8373 | struct elf_aarch64_link_hash_table *htab; |
8374 | htab = elf_aarch64_hash_table (info); | |
a06ea964 NC |
8375 | |
8376 | if (h->plt.offset != (bfd_vma) - 1) | |
8377 | { | |
1419bbe5 WN |
8378 | asection *plt, *gotplt, *relplt; |
8379 | ||
a06ea964 NC |
8380 | /* This symbol has an entry in the procedure linkage table. Set |
8381 | it up. */ | |
8382 | ||
1419bbe5 WN |
8383 | /* When building a static executable, use .iplt, .igot.plt and |
8384 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
8385 | if (htab->root.splt != NULL) | |
8386 | { | |
8387 | plt = htab->root.splt; | |
8388 | gotplt = htab->root.sgotplt; | |
8389 | relplt = htab->root.srelplt; | |
8390 | } | |
8391 | else | |
8392 | { | |
8393 | plt = htab->root.iplt; | |
8394 | gotplt = htab->root.igotplt; | |
8395 | relplt = htab->root.irelplt; | |
8396 | } | |
8397 | ||
8398 | /* This symbol has an entry in the procedure linkage table. Set | |
8399 | it up. */ | |
8400 | if ((h->dynindx == -1 | |
0e1862bb | 8401 | && !((h->forced_local || bfd_link_executable (info)) |
1419bbe5 WN |
8402 | && h->def_regular |
8403 | && h->type == STT_GNU_IFUNC)) | |
8404 | || plt == NULL | |
8405 | || gotplt == NULL | |
8406 | || relplt == NULL) | |
a06ea964 NC |
8407 | abort (); |
8408 | ||
1419bbe5 | 8409 | elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info); |
a06ea964 NC |
8410 | if (!h->def_regular) |
8411 | { | |
8412 | /* Mark the symbol as undefined, rather than as defined in | |
46b87d49 | 8413 | the .plt section. */ |
a06ea964 | 8414 | sym->st_shndx = SHN_UNDEF; |
46b87d49 WN |
8415 | /* If the symbol is weak we need to clear the value. |
8416 | Otherwise, the PLT entry would provide a definition for | |
8417 | the symbol even if the symbol wasn't defined anywhere, | |
8418 | and so the symbol would never be NULL. Leave the value if | |
8419 | there were any relocations where pointer equality matters | |
8420 | (this is a clue for the dynamic linker, to make function | |
8421 | pointer comparisons work between an application and shared | |
8422 | library). */ | |
8423 | if (!h->ref_regular_nonweak || !h->pointer_equality_needed) | |
8424 | sym->st_value = 0; | |
a06ea964 NC |
8425 | } |
8426 | } | |
8427 | ||
8428 | if (h->got.offset != (bfd_vma) - 1 | |
cec5225b | 8429 | && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL) |
a06ea964 NC |
8430 | { |
8431 | Elf_Internal_Rela rela; | |
8432 | bfd_byte *loc; | |
8433 | ||
8434 | /* This symbol has an entry in the global offset table. Set it | |
8435 | up. */ | |
8436 | if (htab->root.sgot == NULL || htab->root.srelgot == NULL) | |
8437 | abort (); | |
8438 | ||
8439 | rela.r_offset = (htab->root.sgot->output_section->vma | |
8440 | + htab->root.sgot->output_offset | |
8441 | + (h->got.offset & ~(bfd_vma) 1)); | |
8442 | ||
49206388 WN |
8443 | if (h->def_regular |
8444 | && h->type == STT_GNU_IFUNC) | |
8445 | { | |
0e1862bb | 8446 | if (bfd_link_pic (info)) |
49206388 WN |
8447 | { |
8448 | /* Generate R_AARCH64_GLOB_DAT. */ | |
8449 | goto do_glob_dat; | |
8450 | } | |
8451 | else | |
8452 | { | |
8453 | asection *plt; | |
8454 | ||
8455 | if (!h->pointer_equality_needed) | |
8456 | abort (); | |
8457 | ||
8458 | /* For non-shared object, we can't use .got.plt, which | |
8459 | contains the real function address if we need pointer | |
8460 | equality. We load the GOT entry with the PLT entry. */ | |
8461 | plt = htab->root.splt ? htab->root.splt : htab->root.iplt; | |
8462 | bfd_put_NN (output_bfd, (plt->output_section->vma | |
8463 | + plt->output_offset | |
8464 | + h->plt.offset), | |
8465 | htab->root.sgot->contents | |
8466 | + (h->got.offset & ~(bfd_vma) 1)); | |
8467 | return TRUE; | |
8468 | } | |
8469 | } | |
0e1862bb | 8470 | else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h)) |
a06ea964 NC |
8471 | { |
8472 | if (!h->def_regular) | |
8473 | return FALSE; | |
8474 | ||
8475 | BFD_ASSERT ((h->got.offset & 1) != 0); | |
a6bb11b2 | 8476 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); |
a06ea964 NC |
8477 | rela.r_addend = (h->root.u.def.value |
8478 | + h->root.u.def.section->output_section->vma | |
8479 | + h->root.u.def.section->output_offset); | |
8480 | } | |
8481 | else | |
8482 | { | |
49206388 | 8483 | do_glob_dat: |
a06ea964 | 8484 | BFD_ASSERT ((h->got.offset & 1) == 0); |
cec5225b | 8485 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 | 8486 | htab->root.sgot->contents + h->got.offset); |
a6bb11b2 | 8487 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT)); |
a06ea964 NC |
8488 | rela.r_addend = 0; |
8489 | } | |
8490 | ||
8491 | loc = htab->root.srelgot->contents; | |
8492 | loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 8493 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
8494 | } |
8495 | ||
8496 | if (h->needs_copy) | |
8497 | { | |
8498 | Elf_Internal_Rela rela; | |
8499 | bfd_byte *loc; | |
8500 | ||
8501 | /* This symbol needs a copy reloc. Set it up. */ | |
8502 | ||
8503 | if (h->dynindx == -1 | |
8504 | || (h->root.type != bfd_link_hash_defined | |
8505 | && h->root.type != bfd_link_hash_defweak) | |
8506 | || htab->srelbss == NULL) | |
8507 | abort (); | |
8508 | ||
8509 | rela.r_offset = (h->root.u.def.value | |
8510 | + h->root.u.def.section->output_section->vma | |
8511 | + h->root.u.def.section->output_offset); | |
a6bb11b2 | 8512 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY)); |
a06ea964 NC |
8513 | rela.r_addend = 0; |
8514 | loc = htab->srelbss->contents; | |
8515 | loc += htab->srelbss->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 8516 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
8517 | } |
8518 | ||
8519 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may | |
8520 | be NULL for local symbols. */ | |
8521 | if (sym != NULL | |
9637f6ef | 8522 | && (h == elf_hash_table (info)->hdynamic |
a06ea964 NC |
8523 | || h == elf_hash_table (info)->hgot)) |
8524 | sym->st_shndx = SHN_ABS; | |
8525 | ||
8526 | return TRUE; | |
8527 | } | |
8528 | ||
1419bbe5 WN |
8529 | /* Finish up local dynamic symbol handling. We set the contents of |
8530 | various dynamic sections here. */ | |
8531 | ||
8532 | static bfd_boolean | |
8533 | elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf) | |
8534 | { | |
8535 | struct elf_link_hash_entry *h | |
8536 | = (struct elf_link_hash_entry *) *slot; | |
8537 | struct bfd_link_info *info | |
8538 | = (struct bfd_link_info *) inf; | |
8539 | ||
8540 | return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd, | |
8541 | info, h, NULL); | |
8542 | } | |
8543 | ||
a06ea964 | 8544 | static void |
cec5225b YZ |
8545 | elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED, |
8546 | struct elf_aarch64_link_hash_table | |
a06ea964 NC |
8547 | *htab) |
8548 | { | |
8549 | /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between | |
8550 | small and large plts and at the minute just generates | |
8551 | the small PLT. */ | |
8552 | ||
cec5225b | 8553 | /* PLT0 of the small PLT looks like this in ELF64 - |
a06ea964 NC |
8554 | stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack. |
8555 | adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT | |
8556 | ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the | |
8557 | // symbol resolver | |
8558 | add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the | |
8559 | // GOTPLT entry for this. | |
8560 | br x17 | |
cec5225b YZ |
8561 | PLT0 will be slightly different in ELF32 due to different got entry |
8562 | size. | |
a06ea964 | 8563 | */ |
caed7120 | 8564 | bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */ |
a06ea964 NC |
8565 | bfd_vma plt_base; |
8566 | ||
8567 | ||
cec5225b | 8568 | memcpy (htab->root.splt->contents, elfNN_aarch64_small_plt0_entry, |
a06ea964 NC |
8569 | PLT_ENTRY_SIZE); |
8570 | elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize = | |
8571 | PLT_ENTRY_SIZE; | |
8572 | ||
caed7120 YZ |
8573 | plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma |
8574 | + htab->root.sgotplt->output_offset | |
8575 | + GOT_ENTRY_SIZE * 2); | |
a06ea964 NC |
8576 | |
8577 | plt_base = htab->root.splt->output_section->vma + | |
f44a1f8e | 8578 | htab->root.splt->output_offset; |
a06ea964 NC |
8579 | |
8580 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
8581 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 YZ |
8582 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
8583 | htab->root.splt->contents + 4, | |
8584 | PG (plt_got_2nd_ent) - PG (plt_base + 4)); | |
a06ea964 | 8585 | |
caed7120 YZ |
8586 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
8587 | htab->root.splt->contents + 8, | |
8588 | PG_OFFSET (plt_got_2nd_ent)); | |
a06ea964 | 8589 | |
caed7120 YZ |
8590 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
8591 | htab->root.splt->contents + 12, | |
8592 | PG_OFFSET (plt_got_2nd_ent)); | |
a06ea964 NC |
8593 | } |
8594 | ||
8595 | static bfd_boolean | |
cec5225b | 8596 | elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd, |
a06ea964 NC |
8597 | struct bfd_link_info *info) |
8598 | { | |
cec5225b | 8599 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
8600 | bfd *dynobj; |
8601 | asection *sdyn; | |
8602 | ||
cec5225b | 8603 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
8604 | dynobj = htab->root.dynobj; |
8605 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); | |
8606 | ||
8607 | if (htab->root.dynamic_sections_created) | |
8608 | { | |
cec5225b | 8609 | ElfNN_External_Dyn *dyncon, *dynconend; |
a06ea964 NC |
8610 | |
8611 | if (sdyn == NULL || htab->root.sgot == NULL) | |
8612 | abort (); | |
8613 | ||
cec5225b YZ |
8614 | dyncon = (ElfNN_External_Dyn *) sdyn->contents; |
8615 | dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size); | |
a06ea964 NC |
8616 | for (; dyncon < dynconend; dyncon++) |
8617 | { | |
8618 | Elf_Internal_Dyn dyn; | |
8619 | asection *s; | |
8620 | ||
cec5225b | 8621 | bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn); |
a06ea964 NC |
8622 | |
8623 | switch (dyn.d_tag) | |
8624 | { | |
8625 | default: | |
8626 | continue; | |
8627 | ||
8628 | case DT_PLTGOT: | |
8629 | s = htab->root.sgotplt; | |
8630 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
8631 | break; | |
8632 | ||
8633 | case DT_JMPREL: | |
8634 | dyn.d_un.d_ptr = htab->root.srelplt->output_section->vma; | |
8635 | break; | |
8636 | ||
8637 | case DT_PLTRELSZ: | |
c955de36 | 8638 | s = htab->root.srelplt; |
a06ea964 NC |
8639 | dyn.d_un.d_val = s->size; |
8640 | break; | |
8641 | ||
8642 | case DT_RELASZ: | |
8643 | /* The procedure linkage table relocs (DT_JMPREL) should | |
8644 | not be included in the overall relocs (DT_RELA). | |
8645 | Therefore, we override the DT_RELASZ entry here to | |
8646 | make it not include the JMPREL relocs. Since the | |
8647 | linker script arranges for .rela.plt to follow all | |
8648 | other relocation sections, we don't have to worry | |
8649 | about changing the DT_RELA entry. */ | |
8650 | if (htab->root.srelplt != NULL) | |
8651 | { | |
c955de36 | 8652 | s = htab->root.srelplt; |
a06ea964 NC |
8653 | dyn.d_un.d_val -= s->size; |
8654 | } | |
8655 | break; | |
8656 | ||
8657 | case DT_TLSDESC_PLT: | |
8658 | s = htab->root.splt; | |
8659 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
8660 | + htab->tlsdesc_plt; | |
8661 | break; | |
8662 | ||
8663 | case DT_TLSDESC_GOT: | |
8664 | s = htab->root.sgot; | |
8665 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
8666 | + htab->dt_tlsdesc_got; | |
8667 | break; | |
8668 | } | |
8669 | ||
cec5225b | 8670 | bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon); |
a06ea964 NC |
8671 | } |
8672 | ||
8673 | } | |
8674 | ||
8675 | /* Fill in the special first entry in the procedure linkage table. */ | |
8676 | if (htab->root.splt && htab->root.splt->size > 0) | |
8677 | { | |
cec5225b | 8678 | elfNN_aarch64_init_small_plt0_entry (output_bfd, htab); |
a06ea964 NC |
8679 | |
8680 | elf_section_data (htab->root.splt->output_section)-> | |
8681 | this_hdr.sh_entsize = htab->plt_entry_size; | |
8682 | ||
8683 | ||
8684 | if (htab->tlsdesc_plt) | |
8685 | { | |
cec5225b | 8686 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
8687 | htab->root.sgot->contents + htab->dt_tlsdesc_got); |
8688 | ||
8689 | memcpy (htab->root.splt->contents + htab->tlsdesc_plt, | |
cec5225b YZ |
8690 | elfNN_aarch64_tlsdesc_small_plt_entry, |
8691 | sizeof (elfNN_aarch64_tlsdesc_small_plt_entry)); | |
a06ea964 NC |
8692 | |
8693 | { | |
8694 | bfd_vma adrp1_addr = | |
8695 | htab->root.splt->output_section->vma | |
8696 | + htab->root.splt->output_offset + htab->tlsdesc_plt + 4; | |
8697 | ||
caed7120 | 8698 | bfd_vma adrp2_addr = adrp1_addr + 4; |
a06ea964 NC |
8699 | |
8700 | bfd_vma got_addr = | |
8701 | htab->root.sgot->output_section->vma | |
8702 | + htab->root.sgot->output_offset; | |
8703 | ||
8704 | bfd_vma pltgot_addr = | |
8705 | htab->root.sgotplt->output_section->vma | |
8706 | + htab->root.sgotplt->output_offset; | |
8707 | ||
8708 | bfd_vma dt_tlsdesc_got = got_addr + htab->dt_tlsdesc_got; | |
caed7120 YZ |
8709 | |
8710 | bfd_byte *plt_entry = | |
8711 | htab->root.splt->contents + htab->tlsdesc_plt; | |
a06ea964 NC |
8712 | |
8713 | /* adrp x2, DT_TLSDESC_GOT */ | |
caed7120 YZ |
8714 | elf_aarch64_update_plt_entry (output_bfd, |
8715 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
8716 | plt_entry + 4, | |
8717 | (PG (dt_tlsdesc_got) | |
8718 | - PG (adrp1_addr))); | |
a06ea964 NC |
8719 | |
8720 | /* adrp x3, 0 */ | |
caed7120 YZ |
8721 | elf_aarch64_update_plt_entry (output_bfd, |
8722 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
8723 | plt_entry + 8, | |
8724 | (PG (pltgot_addr) | |
8725 | - PG (adrp2_addr))); | |
a06ea964 NC |
8726 | |
8727 | /* ldr x2, [x2, #0] */ | |
caed7120 YZ |
8728 | elf_aarch64_update_plt_entry (output_bfd, |
8729 | BFD_RELOC_AARCH64_LDSTNN_LO12, | |
8730 | plt_entry + 12, | |
8731 | PG_OFFSET (dt_tlsdesc_got)); | |
a06ea964 NC |
8732 | |
8733 | /* add x3, x3, 0 */ | |
caed7120 YZ |
8734 | elf_aarch64_update_plt_entry (output_bfd, |
8735 | BFD_RELOC_AARCH64_ADD_LO12, | |
8736 | plt_entry + 16, | |
8737 | PG_OFFSET (pltgot_addr)); | |
a06ea964 NC |
8738 | } |
8739 | } | |
8740 | } | |
8741 | ||
8742 | if (htab->root.sgotplt) | |
8743 | { | |
8744 | if (bfd_is_abs_section (htab->root.sgotplt->output_section)) | |
8745 | { | |
8746 | (*_bfd_error_handler) | |
8747 | (_("discarded output section: `%A'"), htab->root.sgotplt); | |
8748 | return FALSE; | |
8749 | } | |
8750 | ||
8751 | /* Fill in the first three entries in the global offset table. */ | |
8752 | if (htab->root.sgotplt->size > 0) | |
8753 | { | |
8db339a6 MS |
8754 | bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents); |
8755 | ||
a06ea964 | 8756 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ |
cec5225b | 8757 | bfd_put_NN (output_bfd, |
a06ea964 NC |
8758 | (bfd_vma) 0, |
8759 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE); | |
cec5225b | 8760 | bfd_put_NN (output_bfd, |
a06ea964 NC |
8761 | (bfd_vma) 0, |
8762 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2); | |
8763 | } | |
8764 | ||
8db339a6 MS |
8765 | if (htab->root.sgot) |
8766 | { | |
8767 | if (htab->root.sgot->size > 0) | |
8768 | { | |
8769 | bfd_vma addr = | |
8770 | sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0; | |
8771 | bfd_put_NN (output_bfd, addr, htab->root.sgot->contents); | |
8772 | } | |
8773 | } | |
8774 | ||
a06ea964 NC |
8775 | elf_section_data (htab->root.sgotplt->output_section)-> |
8776 | this_hdr.sh_entsize = GOT_ENTRY_SIZE; | |
8777 | } | |
8778 | ||
8779 | if (htab->root.sgot && htab->root.sgot->size > 0) | |
8780 | elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize | |
8781 | = GOT_ENTRY_SIZE; | |
8782 | ||
1419bbe5 WN |
8783 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
8784 | htab_traverse (htab->loc_hash_table, | |
8785 | elfNN_aarch64_finish_local_dynamic_symbol, | |
8786 | info); | |
8787 | ||
a06ea964 NC |
8788 | return TRUE; |
8789 | } | |
8790 | ||
8791 | /* Return address for Ith PLT stub in section PLT, for relocation REL | |
8792 | or (bfd_vma) -1 if it should not be included. */ | |
8793 | ||
8794 | static bfd_vma | |
cec5225b | 8795 | elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt, |
a06ea964 NC |
8796 | const arelent *rel ATTRIBUTE_UNUSED) |
8797 | { | |
8798 | return plt->vma + PLT_ENTRY_SIZE + i * PLT_SMALL_ENTRY_SIZE; | |
8799 | } | |
8800 | ||
8801 | ||
8802 | /* We use this so we can override certain functions | |
8803 | (though currently we don't). */ | |
8804 | ||
cec5225b | 8805 | const struct elf_size_info elfNN_aarch64_size_info = |
a06ea964 | 8806 | { |
cec5225b YZ |
8807 | sizeof (ElfNN_External_Ehdr), |
8808 | sizeof (ElfNN_External_Phdr), | |
8809 | sizeof (ElfNN_External_Shdr), | |
8810 | sizeof (ElfNN_External_Rel), | |
8811 | sizeof (ElfNN_External_Rela), | |
8812 | sizeof (ElfNN_External_Sym), | |
8813 | sizeof (ElfNN_External_Dyn), | |
a06ea964 NC |
8814 | sizeof (Elf_External_Note), |
8815 | 4, /* Hash table entry size. */ | |
8816 | 1, /* Internal relocs per external relocs. */ | |
cec5225b YZ |
8817 | ARCH_SIZE, /* Arch size. */ |
8818 | LOG_FILE_ALIGN, /* Log_file_align. */ | |
8819 | ELFCLASSNN, EV_CURRENT, | |
8820 | bfd_elfNN_write_out_phdrs, | |
8821 | bfd_elfNN_write_shdrs_and_ehdr, | |
8822 | bfd_elfNN_checksum_contents, | |
8823 | bfd_elfNN_write_relocs, | |
8824 | bfd_elfNN_swap_symbol_in, | |
8825 | bfd_elfNN_swap_symbol_out, | |
8826 | bfd_elfNN_slurp_reloc_table, | |
8827 | bfd_elfNN_slurp_symbol_table, | |
8828 | bfd_elfNN_swap_dyn_in, | |
8829 | bfd_elfNN_swap_dyn_out, | |
8830 | bfd_elfNN_swap_reloc_in, | |
8831 | bfd_elfNN_swap_reloc_out, | |
8832 | bfd_elfNN_swap_reloca_in, | |
8833 | bfd_elfNN_swap_reloca_out | |
a06ea964 NC |
8834 | }; |
8835 | ||
8836 | #define ELF_ARCH bfd_arch_aarch64 | |
8837 | #define ELF_MACHINE_CODE EM_AARCH64 | |
8838 | #define ELF_MAXPAGESIZE 0x10000 | |
8839 | #define ELF_MINPAGESIZE 0x1000 | |
8840 | #define ELF_COMMONPAGESIZE 0x1000 | |
8841 | ||
cec5225b YZ |
8842 | #define bfd_elfNN_close_and_cleanup \ |
8843 | elfNN_aarch64_close_and_cleanup | |
a06ea964 | 8844 | |
cec5225b YZ |
8845 | #define bfd_elfNN_bfd_free_cached_info \ |
8846 | elfNN_aarch64_bfd_free_cached_info | |
a06ea964 | 8847 | |
cec5225b YZ |
8848 | #define bfd_elfNN_bfd_is_target_special_symbol \ |
8849 | elfNN_aarch64_is_target_special_symbol | |
a06ea964 | 8850 | |
cec5225b YZ |
8851 | #define bfd_elfNN_bfd_link_hash_table_create \ |
8852 | elfNN_aarch64_link_hash_table_create | |
a06ea964 | 8853 | |
cec5225b YZ |
8854 | #define bfd_elfNN_bfd_merge_private_bfd_data \ |
8855 | elfNN_aarch64_merge_private_bfd_data | |
a06ea964 | 8856 | |
cec5225b YZ |
8857 | #define bfd_elfNN_bfd_print_private_bfd_data \ |
8858 | elfNN_aarch64_print_private_bfd_data | |
a06ea964 | 8859 | |
cec5225b YZ |
8860 | #define bfd_elfNN_bfd_reloc_type_lookup \ |
8861 | elfNN_aarch64_reloc_type_lookup | |
a06ea964 | 8862 | |
cec5225b YZ |
8863 | #define bfd_elfNN_bfd_reloc_name_lookup \ |
8864 | elfNN_aarch64_reloc_name_lookup | |
a06ea964 | 8865 | |
cec5225b YZ |
8866 | #define bfd_elfNN_bfd_set_private_flags \ |
8867 | elfNN_aarch64_set_private_flags | |
a06ea964 | 8868 | |
cec5225b YZ |
8869 | #define bfd_elfNN_find_inliner_info \ |
8870 | elfNN_aarch64_find_inliner_info | |
a06ea964 | 8871 | |
cec5225b YZ |
8872 | #define bfd_elfNN_find_nearest_line \ |
8873 | elfNN_aarch64_find_nearest_line | |
a06ea964 | 8874 | |
cec5225b YZ |
8875 | #define bfd_elfNN_mkobject \ |
8876 | elfNN_aarch64_mkobject | |
a06ea964 | 8877 | |
cec5225b YZ |
8878 | #define bfd_elfNN_new_section_hook \ |
8879 | elfNN_aarch64_new_section_hook | |
a06ea964 NC |
8880 | |
8881 | #define elf_backend_adjust_dynamic_symbol \ | |
cec5225b | 8882 | elfNN_aarch64_adjust_dynamic_symbol |
a06ea964 NC |
8883 | |
8884 | #define elf_backend_always_size_sections \ | |
cec5225b | 8885 | elfNN_aarch64_always_size_sections |
a06ea964 NC |
8886 | |
8887 | #define elf_backend_check_relocs \ | |
cec5225b | 8888 | elfNN_aarch64_check_relocs |
a06ea964 NC |
8889 | |
8890 | #define elf_backend_copy_indirect_symbol \ | |
cec5225b | 8891 | elfNN_aarch64_copy_indirect_symbol |
a06ea964 NC |
8892 | |
8893 | /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts | |
8894 | to them in our hash. */ | |
8895 | #define elf_backend_create_dynamic_sections \ | |
cec5225b | 8896 | elfNN_aarch64_create_dynamic_sections |
a06ea964 NC |
8897 | |
8898 | #define elf_backend_init_index_section \ | |
8899 | _bfd_elf_init_2_index_sections | |
8900 | ||
a06ea964 | 8901 | #define elf_backend_finish_dynamic_sections \ |
cec5225b | 8902 | elfNN_aarch64_finish_dynamic_sections |
a06ea964 NC |
8903 | |
8904 | #define elf_backend_finish_dynamic_symbol \ | |
cec5225b | 8905 | elfNN_aarch64_finish_dynamic_symbol |
a06ea964 NC |
8906 | |
8907 | #define elf_backend_gc_sweep_hook \ | |
cec5225b | 8908 | elfNN_aarch64_gc_sweep_hook |
a06ea964 NC |
8909 | |
8910 | #define elf_backend_object_p \ | |
cec5225b | 8911 | elfNN_aarch64_object_p |
a06ea964 NC |
8912 | |
8913 | #define elf_backend_output_arch_local_syms \ | |
cec5225b | 8914 | elfNN_aarch64_output_arch_local_syms |
a06ea964 NC |
8915 | |
8916 | #define elf_backend_plt_sym_val \ | |
cec5225b | 8917 | elfNN_aarch64_plt_sym_val |
a06ea964 NC |
8918 | |
8919 | #define elf_backend_post_process_headers \ | |
cec5225b | 8920 | elfNN_aarch64_post_process_headers |
a06ea964 NC |
8921 | |
8922 | #define elf_backend_relocate_section \ | |
cec5225b | 8923 | elfNN_aarch64_relocate_section |
a06ea964 NC |
8924 | |
8925 | #define elf_backend_reloc_type_class \ | |
cec5225b | 8926 | elfNN_aarch64_reloc_type_class |
a06ea964 | 8927 | |
a06ea964 | 8928 | #define elf_backend_section_from_shdr \ |
cec5225b | 8929 | elfNN_aarch64_section_from_shdr |
a06ea964 NC |
8930 | |
8931 | #define elf_backend_size_dynamic_sections \ | |
cec5225b | 8932 | elfNN_aarch64_size_dynamic_sections |
a06ea964 NC |
8933 | |
8934 | #define elf_backend_size_info \ | |
cec5225b | 8935 | elfNN_aarch64_size_info |
a06ea964 | 8936 | |
68fcca92 JW |
8937 | #define elf_backend_write_section \ |
8938 | elfNN_aarch64_write_section | |
8939 | ||
a06ea964 | 8940 | #define elf_backend_can_refcount 1 |
59c108f7 | 8941 | #define elf_backend_can_gc_sections 1 |
a06ea964 NC |
8942 | #define elf_backend_plt_readonly 1 |
8943 | #define elf_backend_want_got_plt 1 | |
8944 | #define elf_backend_want_plt_sym 0 | |
8945 | #define elf_backend_may_use_rel_p 0 | |
8946 | #define elf_backend_may_use_rela_p 1 | |
8947 | #define elf_backend_default_use_rela_p 1 | |
2e0488d3 | 8948 | #define elf_backend_rela_normal 1 |
a06ea964 | 8949 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3) |
c495064d | 8950 | #define elf_backend_default_execstack 0 |
32f573bc | 8951 | #define elf_backend_extern_protected_data 1 |
a06ea964 NC |
8952 | |
8953 | #undef elf_backend_obj_attrs_section | |
8954 | #define elf_backend_obj_attrs_section ".ARM.attributes" | |
8955 | ||
cec5225b | 8956 | #include "elfNN-target.h" |