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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 YZ |
167 | #define IS_AARCH64_TLS_RELOC(R_TYPE) \ |
168 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \ | |
3c12b054 | 169 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \ |
a6bb11b2 YZ |
170 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \ |
171 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1 \ | |
172 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC \ | |
173 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \ | |
174 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC \ | |
175 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC \ | |
176 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \ | |
177 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12 \ | |
178 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 \ | |
179 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC \ | |
180 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 \ | |
181 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 \ | |
182 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC \ | |
183 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0 \ | |
184 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC \ | |
185 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPMOD \ | |
186 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPREL \ | |
187 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_TPREL \ | |
a06ea964 NC |
188 | || IS_AARCH64_TLSDESC_RELOC ((R_TYPE))) |
189 | ||
a6bb11b2 YZ |
190 | #define IS_AARCH64_TLSDESC_RELOC(R_TYPE) \ |
191 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \ | |
a6bb11b2 | 192 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \ |
389b8029 | 193 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \ |
a6bb11b2 YZ |
194 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC \ |
195 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC \ | |
196 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC \ | |
197 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1 \ | |
198 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \ | |
199 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \ | |
200 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \ | |
201 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \ | |
202 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC) | |
a06ea964 NC |
203 | |
204 | #define ELIMINATE_COPY_RELOCS 0 | |
205 | ||
a06ea964 | 206 | /* Return size of a relocation entry. HTAB is the bfd's |
cec5225b YZ |
207 | elf_aarch64_link_hash_entry. */ |
208 | #define RELOC_SIZE(HTAB) (sizeof (ElfNN_External_Rela)) | |
a06ea964 | 209 | |
cec5225b YZ |
210 | /* GOT Entry size - 8 bytes in ELF64 and 4 bytes in ELF32. */ |
211 | #define GOT_ENTRY_SIZE (ARCH_SIZE / 8) | |
a06ea964 NC |
212 | #define PLT_ENTRY_SIZE (32) |
213 | #define PLT_SMALL_ENTRY_SIZE (16) | |
214 | #define PLT_TLSDESC_ENTRY_SIZE (32) | |
215 | ||
a06ea964 NC |
216 | /* Encoding of the nop instruction */ |
217 | #define INSN_NOP 0xd503201f | |
218 | ||
219 | #define aarch64_compute_jump_table_size(htab) \ | |
220 | (((htab)->root.srelplt == NULL) ? 0 \ | |
221 | : (htab)->root.srelplt->reloc_count * GOT_ENTRY_SIZE) | |
222 | ||
223 | /* The first entry in a procedure linkage table looks like this | |
224 | if the distance between the PLTGOT and the PLT is < 4GB use | |
225 | these PLT entries. Note that the dynamic linker gets &PLTGOT[2] | |
226 | in x16 and needs to work out PLTGOT[1] by using an address of | |
cec5225b YZ |
227 | [x16,#-GOT_ENTRY_SIZE]. */ |
228 | static const bfd_byte elfNN_aarch64_small_plt0_entry[PLT_ENTRY_SIZE] = | |
a06ea964 NC |
229 | { |
230 | 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */ | |
231 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */ | |
caed7120 | 232 | #if ARCH_SIZE == 64 |
a06ea964 NC |
233 | 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */ |
234 | 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */ | |
caed7120 YZ |
235 | #else |
236 | 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */ | |
237 | 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */ | |
238 | #endif | |
a06ea964 NC |
239 | 0x20, 0x02, 0x1f, 0xd6, /* br x17 */ |
240 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
241 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
242 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
243 | }; | |
244 | ||
245 | /* Per function entry in a procedure linkage table looks like this | |
246 | if the distance between the PLTGOT and the PLT is < 4GB use | |
247 | these PLT entries. */ | |
cec5225b | 248 | static const bfd_byte elfNN_aarch64_small_plt_entry[PLT_SMALL_ENTRY_SIZE] = |
a06ea964 NC |
249 | { |
250 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
caed7120 | 251 | #if ARCH_SIZE == 64 |
a06ea964 NC |
252 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ |
253 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
caed7120 YZ |
254 | #else |
255 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
256 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
257 | #endif | |
a06ea964 NC |
258 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ |
259 | }; | |
260 | ||
261 | static const bfd_byte | |
cec5225b | 262 | elfNN_aarch64_tlsdesc_small_plt_entry[PLT_TLSDESC_ENTRY_SIZE] = |
a06ea964 NC |
263 | { |
264 | 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */ | |
265 | 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */ | |
266 | 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */ | |
caed7120 YZ |
267 | #if ARCH_SIZE == 64 |
268 | 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */ | |
a06ea964 | 269 | 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */ |
caed7120 YZ |
270 | #else |
271 | 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */ | |
272 | 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */ | |
273 | #endif | |
274 | 0x40, 0x00, 0x1f, 0xd6, /* br x2 */ | |
a06ea964 NC |
275 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ |
276 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
277 | }; | |
278 | ||
cec5225b YZ |
279 | #define elf_info_to_howto elfNN_aarch64_info_to_howto |
280 | #define elf_info_to_howto_rel elfNN_aarch64_info_to_howto | |
a06ea964 NC |
281 | |
282 | #define AARCH64_ELF_ABI_VERSION 0 | |
a06ea964 NC |
283 | |
284 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ | |
285 | #define ALL_ONES (~ (bfd_vma) 0) | |
286 | ||
a6bb11b2 YZ |
287 | /* Indexed by the bfd interal reloc enumerators. |
288 | Therefore, the table needs to be synced with BFD_RELOC_AARCH64_* | |
289 | in reloc.c. */ | |
a06ea964 | 290 | |
a6bb11b2 | 291 | static reloc_howto_type elfNN_aarch64_howto_table[] = |
a06ea964 | 292 | { |
a6bb11b2 | 293 | EMPTY_HOWTO (0), |
a06ea964 | 294 | |
a6bb11b2 | 295 | /* Basic data relocations. */ |
a06ea964 | 296 | |
a6bb11b2 YZ |
297 | #if ARCH_SIZE == 64 |
298 | HOWTO (R_AARCH64_NULL, /* type */ | |
a06ea964 | 299 | 0, /* rightshift */ |
6346d5ca | 300 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a6bb11b2 | 301 | 0, /* bitsize */ |
a06ea964 NC |
302 | FALSE, /* pc_relative */ |
303 | 0, /* bitpos */ | |
304 | complain_overflow_dont, /* complain_on_overflow */ | |
305 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 306 | "R_AARCH64_NULL", /* name */ |
a06ea964 NC |
307 | FALSE, /* partial_inplace */ |
308 | 0, /* src_mask */ | |
a6bb11b2 | 309 | 0, /* dst_mask */ |
a06ea964 | 310 | FALSE), /* pcrel_offset */ |
a6bb11b2 YZ |
311 | #else |
312 | HOWTO (R_AARCH64_NONE, /* type */ | |
a06ea964 | 313 | 0, /* rightshift */ |
6346d5ca | 314 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a06ea964 NC |
315 | 0, /* bitsize */ |
316 | FALSE, /* pc_relative */ | |
317 | 0, /* bitpos */ | |
318 | complain_overflow_dont, /* complain_on_overflow */ | |
319 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 320 | "R_AARCH64_NONE", /* name */ |
a06ea964 NC |
321 | FALSE, /* partial_inplace */ |
322 | 0, /* src_mask */ | |
323 | 0, /* dst_mask */ | |
324 | FALSE), /* pcrel_offset */ | |
a6bb11b2 | 325 | #endif |
a06ea964 NC |
326 | |
327 | /* .xword: (S+A) */ | |
a6bb11b2 | 328 | HOWTO64 (AARCH64_R (ABS64), /* type */ |
a06ea964 NC |
329 | 0, /* rightshift */ |
330 | 4, /* size (4 = long long) */ | |
331 | 64, /* bitsize */ | |
332 | FALSE, /* pc_relative */ | |
333 | 0, /* bitpos */ | |
334 | complain_overflow_unsigned, /* complain_on_overflow */ | |
335 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 336 | AARCH64_R_STR (ABS64), /* name */ |
a06ea964 NC |
337 | FALSE, /* partial_inplace */ |
338 | ALL_ONES, /* src_mask */ | |
339 | ALL_ONES, /* dst_mask */ | |
340 | FALSE), /* pcrel_offset */ | |
341 | ||
342 | /* .word: (S+A) */ | |
a6bb11b2 | 343 | HOWTO (AARCH64_R (ABS32), /* type */ |
a06ea964 NC |
344 | 0, /* rightshift */ |
345 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
346 | 32, /* bitsize */ | |
347 | FALSE, /* pc_relative */ | |
348 | 0, /* bitpos */ | |
349 | complain_overflow_unsigned, /* complain_on_overflow */ | |
350 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 351 | AARCH64_R_STR (ABS32), /* name */ |
a06ea964 NC |
352 | FALSE, /* partial_inplace */ |
353 | 0xffffffff, /* src_mask */ | |
354 | 0xffffffff, /* dst_mask */ | |
355 | FALSE), /* pcrel_offset */ | |
356 | ||
357 | /* .half: (S+A) */ | |
a6bb11b2 | 358 | HOWTO (AARCH64_R (ABS16), /* type */ |
a06ea964 NC |
359 | 0, /* rightshift */ |
360 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
361 | 16, /* bitsize */ | |
362 | FALSE, /* pc_relative */ | |
363 | 0, /* bitpos */ | |
364 | complain_overflow_unsigned, /* complain_on_overflow */ | |
365 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 366 | AARCH64_R_STR (ABS16), /* name */ |
a06ea964 NC |
367 | FALSE, /* partial_inplace */ |
368 | 0xffff, /* src_mask */ | |
369 | 0xffff, /* dst_mask */ | |
370 | FALSE), /* pcrel_offset */ | |
371 | ||
372 | /* .xword: (S+A-P) */ | |
a6bb11b2 | 373 | HOWTO64 (AARCH64_R (PREL64), /* type */ |
a06ea964 NC |
374 | 0, /* rightshift */ |
375 | 4, /* size (4 = long long) */ | |
376 | 64, /* bitsize */ | |
377 | TRUE, /* pc_relative */ | |
378 | 0, /* bitpos */ | |
379 | complain_overflow_signed, /* complain_on_overflow */ | |
380 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 381 | AARCH64_R_STR (PREL64), /* name */ |
a06ea964 NC |
382 | FALSE, /* partial_inplace */ |
383 | ALL_ONES, /* src_mask */ | |
384 | ALL_ONES, /* dst_mask */ | |
385 | TRUE), /* pcrel_offset */ | |
386 | ||
387 | /* .word: (S+A-P) */ | |
a6bb11b2 | 388 | HOWTO (AARCH64_R (PREL32), /* type */ |
a06ea964 NC |
389 | 0, /* rightshift */ |
390 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
391 | 32, /* bitsize */ | |
392 | TRUE, /* pc_relative */ | |
393 | 0, /* bitpos */ | |
394 | complain_overflow_signed, /* complain_on_overflow */ | |
395 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 396 | AARCH64_R_STR (PREL32), /* name */ |
a06ea964 NC |
397 | FALSE, /* partial_inplace */ |
398 | 0xffffffff, /* src_mask */ | |
399 | 0xffffffff, /* dst_mask */ | |
400 | TRUE), /* pcrel_offset */ | |
401 | ||
402 | /* .half: (S+A-P) */ | |
a6bb11b2 | 403 | HOWTO (AARCH64_R (PREL16), /* type */ |
a06ea964 NC |
404 | 0, /* rightshift */ |
405 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
406 | 16, /* bitsize */ | |
407 | TRUE, /* pc_relative */ | |
408 | 0, /* bitpos */ | |
409 | complain_overflow_signed, /* complain_on_overflow */ | |
410 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 411 | AARCH64_R_STR (PREL16), /* name */ |
a06ea964 NC |
412 | FALSE, /* partial_inplace */ |
413 | 0xffff, /* src_mask */ | |
414 | 0xffff, /* dst_mask */ | |
415 | TRUE), /* pcrel_offset */ | |
416 | ||
417 | /* Group relocations to create a 16, 32, 48 or 64 bit | |
418 | unsigned data or abs address inline. */ | |
419 | ||
420 | /* MOVZ: ((S+A) >> 0) & 0xffff */ | |
a6bb11b2 | 421 | HOWTO (AARCH64_R (MOVW_UABS_G0), /* type */ |
a06ea964 NC |
422 | 0, /* rightshift */ |
423 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
424 | 16, /* bitsize */ | |
425 | FALSE, /* pc_relative */ | |
426 | 0, /* bitpos */ | |
427 | complain_overflow_unsigned, /* complain_on_overflow */ | |
428 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 429 | AARCH64_R_STR (MOVW_UABS_G0), /* name */ |
a06ea964 NC |
430 | FALSE, /* partial_inplace */ |
431 | 0xffff, /* src_mask */ | |
432 | 0xffff, /* dst_mask */ | |
433 | FALSE), /* pcrel_offset */ | |
434 | ||
435 | /* MOVK: ((S+A) >> 0) & 0xffff [no overflow check] */ | |
a6bb11b2 | 436 | HOWTO (AARCH64_R (MOVW_UABS_G0_NC), /* type */ |
a06ea964 NC |
437 | 0, /* rightshift */ |
438 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
439 | 16, /* bitsize */ | |
440 | FALSE, /* pc_relative */ | |
441 | 0, /* bitpos */ | |
442 | complain_overflow_dont, /* complain_on_overflow */ | |
443 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 444 | AARCH64_R_STR (MOVW_UABS_G0_NC), /* name */ |
a06ea964 NC |
445 | FALSE, /* partial_inplace */ |
446 | 0xffff, /* src_mask */ | |
447 | 0xffff, /* dst_mask */ | |
448 | FALSE), /* pcrel_offset */ | |
449 | ||
450 | /* MOVZ: ((S+A) >> 16) & 0xffff */ | |
a6bb11b2 | 451 | HOWTO (AARCH64_R (MOVW_UABS_G1), /* type */ |
a06ea964 NC |
452 | 16, /* rightshift */ |
453 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
454 | 16, /* bitsize */ | |
455 | FALSE, /* pc_relative */ | |
456 | 0, /* bitpos */ | |
457 | complain_overflow_unsigned, /* complain_on_overflow */ | |
458 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 459 | AARCH64_R_STR (MOVW_UABS_G1), /* name */ |
a06ea964 NC |
460 | FALSE, /* partial_inplace */ |
461 | 0xffff, /* src_mask */ | |
462 | 0xffff, /* dst_mask */ | |
463 | FALSE), /* pcrel_offset */ | |
464 | ||
465 | /* MOVK: ((S+A) >> 16) & 0xffff [no overflow check] */ | |
a6bb11b2 | 466 | HOWTO64 (AARCH64_R (MOVW_UABS_G1_NC), /* type */ |
a06ea964 NC |
467 | 16, /* rightshift */ |
468 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
469 | 16, /* bitsize */ | |
470 | FALSE, /* pc_relative */ | |
471 | 0, /* bitpos */ | |
472 | complain_overflow_dont, /* complain_on_overflow */ | |
473 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 474 | AARCH64_R_STR (MOVW_UABS_G1_NC), /* name */ |
a06ea964 NC |
475 | FALSE, /* partial_inplace */ |
476 | 0xffff, /* src_mask */ | |
477 | 0xffff, /* dst_mask */ | |
478 | FALSE), /* pcrel_offset */ | |
479 | ||
480 | /* MOVZ: ((S+A) >> 32) & 0xffff */ | |
a6bb11b2 | 481 | HOWTO64 (AARCH64_R (MOVW_UABS_G2), /* type */ |
a06ea964 NC |
482 | 32, /* rightshift */ |
483 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
484 | 16, /* bitsize */ | |
485 | FALSE, /* pc_relative */ | |
486 | 0, /* bitpos */ | |
487 | complain_overflow_unsigned, /* complain_on_overflow */ | |
488 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 489 | AARCH64_R_STR (MOVW_UABS_G2), /* name */ |
a06ea964 NC |
490 | FALSE, /* partial_inplace */ |
491 | 0xffff, /* src_mask */ | |
492 | 0xffff, /* dst_mask */ | |
493 | FALSE), /* pcrel_offset */ | |
494 | ||
495 | /* MOVK: ((S+A) >> 32) & 0xffff [no overflow check] */ | |
a6bb11b2 | 496 | HOWTO64 (AARCH64_R (MOVW_UABS_G2_NC), /* type */ |
a06ea964 NC |
497 | 32, /* rightshift */ |
498 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
499 | 16, /* bitsize */ | |
500 | FALSE, /* pc_relative */ | |
501 | 0, /* bitpos */ | |
502 | complain_overflow_dont, /* complain_on_overflow */ | |
503 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 504 | AARCH64_R_STR (MOVW_UABS_G2_NC), /* name */ |
a06ea964 NC |
505 | FALSE, /* partial_inplace */ |
506 | 0xffff, /* src_mask */ | |
507 | 0xffff, /* dst_mask */ | |
508 | FALSE), /* pcrel_offset */ | |
509 | ||
510 | /* MOVZ: ((S+A) >> 48) & 0xffff */ | |
a6bb11b2 | 511 | HOWTO64 (AARCH64_R (MOVW_UABS_G3), /* type */ |
a06ea964 NC |
512 | 48, /* rightshift */ |
513 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
514 | 16, /* bitsize */ | |
515 | FALSE, /* pc_relative */ | |
516 | 0, /* bitpos */ | |
517 | complain_overflow_unsigned, /* complain_on_overflow */ | |
518 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 519 | AARCH64_R_STR (MOVW_UABS_G3), /* name */ |
a06ea964 NC |
520 | FALSE, /* partial_inplace */ |
521 | 0xffff, /* src_mask */ | |
522 | 0xffff, /* dst_mask */ | |
523 | FALSE), /* pcrel_offset */ | |
524 | ||
525 | /* Group relocations to create high part of a 16, 32, 48 or 64 bit | |
526 | signed data or abs address inline. Will change instruction | |
527 | to MOVN or MOVZ depending on sign of calculated value. */ | |
528 | ||
529 | /* MOV[ZN]: ((S+A) >> 0) & 0xffff */ | |
a6bb11b2 | 530 | HOWTO (AARCH64_R (MOVW_SABS_G0), /* type */ |
a06ea964 NC |
531 | 0, /* rightshift */ |
532 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
533 | 16, /* bitsize */ | |
534 | FALSE, /* pc_relative */ | |
535 | 0, /* bitpos */ | |
536 | complain_overflow_signed, /* complain_on_overflow */ | |
537 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 538 | AARCH64_R_STR (MOVW_SABS_G0), /* name */ |
a06ea964 NC |
539 | FALSE, /* partial_inplace */ |
540 | 0xffff, /* src_mask */ | |
541 | 0xffff, /* dst_mask */ | |
542 | FALSE), /* pcrel_offset */ | |
543 | ||
544 | /* MOV[ZN]: ((S+A) >> 16) & 0xffff */ | |
a6bb11b2 | 545 | HOWTO64 (AARCH64_R (MOVW_SABS_G1), /* type */ |
a06ea964 NC |
546 | 16, /* rightshift */ |
547 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
548 | 16, /* bitsize */ | |
549 | FALSE, /* pc_relative */ | |
550 | 0, /* bitpos */ | |
551 | complain_overflow_signed, /* complain_on_overflow */ | |
552 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 553 | AARCH64_R_STR (MOVW_SABS_G1), /* name */ |
a06ea964 NC |
554 | FALSE, /* partial_inplace */ |
555 | 0xffff, /* src_mask */ | |
556 | 0xffff, /* dst_mask */ | |
557 | FALSE), /* pcrel_offset */ | |
558 | ||
559 | /* MOV[ZN]: ((S+A) >> 32) & 0xffff */ | |
a6bb11b2 | 560 | HOWTO64 (AARCH64_R (MOVW_SABS_G2), /* type */ |
a06ea964 NC |
561 | 32, /* rightshift */ |
562 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
563 | 16, /* bitsize */ | |
564 | FALSE, /* pc_relative */ | |
565 | 0, /* bitpos */ | |
566 | complain_overflow_signed, /* complain_on_overflow */ | |
567 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 568 | AARCH64_R_STR (MOVW_SABS_G2), /* name */ |
a06ea964 NC |
569 | FALSE, /* partial_inplace */ |
570 | 0xffff, /* src_mask */ | |
571 | 0xffff, /* dst_mask */ | |
572 | FALSE), /* pcrel_offset */ | |
573 | ||
574 | /* Relocations to generate 19, 21 and 33 bit PC-relative load/store | |
575 | addresses: PG(x) is (x & ~0xfff). */ | |
576 | ||
577 | /* LD-lit: ((S+A-P) >> 2) & 0x7ffff */ | |
a6bb11b2 | 578 | HOWTO (AARCH64_R (LD_PREL_LO19), /* type */ |
a06ea964 NC |
579 | 2, /* rightshift */ |
580 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
581 | 19, /* bitsize */ | |
582 | TRUE, /* pc_relative */ | |
583 | 0, /* bitpos */ | |
584 | complain_overflow_signed, /* complain_on_overflow */ | |
585 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 586 | AARCH64_R_STR (LD_PREL_LO19), /* name */ |
a06ea964 NC |
587 | FALSE, /* partial_inplace */ |
588 | 0x7ffff, /* src_mask */ | |
589 | 0x7ffff, /* dst_mask */ | |
590 | TRUE), /* pcrel_offset */ | |
591 | ||
592 | /* ADR: (S+A-P) & 0x1fffff */ | |
a6bb11b2 | 593 | HOWTO (AARCH64_R (ADR_PREL_LO21), /* type */ |
a06ea964 NC |
594 | 0, /* rightshift */ |
595 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
596 | 21, /* bitsize */ | |
597 | TRUE, /* pc_relative */ | |
598 | 0, /* bitpos */ | |
599 | complain_overflow_signed, /* complain_on_overflow */ | |
600 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 601 | AARCH64_R_STR (ADR_PREL_LO21), /* name */ |
a06ea964 NC |
602 | FALSE, /* partial_inplace */ |
603 | 0x1fffff, /* src_mask */ | |
604 | 0x1fffff, /* dst_mask */ | |
605 | TRUE), /* pcrel_offset */ | |
606 | ||
607 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
a6bb11b2 | 608 | HOWTO (AARCH64_R (ADR_PREL_PG_HI21), /* type */ |
a06ea964 NC |
609 | 12, /* rightshift */ |
610 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
611 | 21, /* bitsize */ | |
612 | TRUE, /* pc_relative */ | |
613 | 0, /* bitpos */ | |
614 | complain_overflow_signed, /* complain_on_overflow */ | |
615 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 616 | AARCH64_R_STR (ADR_PREL_PG_HI21), /* name */ |
a06ea964 NC |
617 | FALSE, /* partial_inplace */ |
618 | 0x1fffff, /* src_mask */ | |
619 | 0x1fffff, /* dst_mask */ | |
620 | TRUE), /* pcrel_offset */ | |
621 | ||
622 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff [no overflow check] */ | |
a6bb11b2 | 623 | HOWTO64 (AARCH64_R (ADR_PREL_PG_HI21_NC), /* type */ |
a06ea964 NC |
624 | 12, /* rightshift */ |
625 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
626 | 21, /* bitsize */ | |
627 | TRUE, /* pc_relative */ | |
628 | 0, /* bitpos */ | |
629 | complain_overflow_dont, /* complain_on_overflow */ | |
630 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 631 | AARCH64_R_STR (ADR_PREL_PG_HI21_NC), /* name */ |
a06ea964 NC |
632 | FALSE, /* partial_inplace */ |
633 | 0x1fffff, /* src_mask */ | |
634 | 0x1fffff, /* dst_mask */ | |
635 | TRUE), /* pcrel_offset */ | |
636 | ||
637 | /* ADD: (S+A) & 0xfff [no overflow check] */ | |
a6bb11b2 | 638 | HOWTO (AARCH64_R (ADD_ABS_LO12_NC), /* type */ |
a06ea964 NC |
639 | 0, /* rightshift */ |
640 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
641 | 12, /* bitsize */ | |
642 | FALSE, /* pc_relative */ | |
643 | 10, /* bitpos */ | |
644 | complain_overflow_dont, /* complain_on_overflow */ | |
645 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 646 | AARCH64_R_STR (ADD_ABS_LO12_NC), /* name */ |
a06ea964 NC |
647 | FALSE, /* partial_inplace */ |
648 | 0x3ffc00, /* src_mask */ | |
649 | 0x3ffc00, /* dst_mask */ | |
650 | FALSE), /* pcrel_offset */ | |
651 | ||
652 | /* LD/ST8: (S+A) & 0xfff */ | |
a6bb11b2 | 653 | HOWTO (AARCH64_R (LDST8_ABS_LO12_NC), /* type */ |
a06ea964 NC |
654 | 0, /* rightshift */ |
655 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
656 | 12, /* bitsize */ | |
657 | FALSE, /* pc_relative */ | |
658 | 0, /* bitpos */ | |
659 | complain_overflow_dont, /* complain_on_overflow */ | |
660 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 661 | AARCH64_R_STR (LDST8_ABS_LO12_NC), /* name */ |
a06ea964 NC |
662 | FALSE, /* partial_inplace */ |
663 | 0xfff, /* src_mask */ | |
664 | 0xfff, /* dst_mask */ | |
665 | FALSE), /* pcrel_offset */ | |
666 | ||
667 | /* Relocations for control-flow instructions. */ | |
668 | ||
669 | /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */ | |
a6bb11b2 | 670 | HOWTO (AARCH64_R (TSTBR14), /* type */ |
a06ea964 NC |
671 | 2, /* rightshift */ |
672 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
673 | 14, /* bitsize */ | |
674 | TRUE, /* pc_relative */ | |
675 | 0, /* bitpos */ | |
676 | complain_overflow_signed, /* complain_on_overflow */ | |
677 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 678 | AARCH64_R_STR (TSTBR14), /* name */ |
a06ea964 NC |
679 | FALSE, /* partial_inplace */ |
680 | 0x3fff, /* src_mask */ | |
681 | 0x3fff, /* dst_mask */ | |
682 | TRUE), /* pcrel_offset */ | |
683 | ||
684 | /* B.cond: ((S+A-P) >> 2) & 0x7ffff */ | |
a6bb11b2 | 685 | HOWTO (AARCH64_R (CONDBR19), /* type */ |
a06ea964 NC |
686 | 2, /* rightshift */ |
687 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
688 | 19, /* bitsize */ | |
689 | TRUE, /* pc_relative */ | |
690 | 0, /* bitpos */ | |
691 | complain_overflow_signed, /* complain_on_overflow */ | |
692 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 693 | AARCH64_R_STR (CONDBR19), /* name */ |
a06ea964 NC |
694 | FALSE, /* partial_inplace */ |
695 | 0x7ffff, /* src_mask */ | |
696 | 0x7ffff, /* dst_mask */ | |
697 | TRUE), /* pcrel_offset */ | |
698 | ||
a06ea964 | 699 | /* B: ((S+A-P) >> 2) & 0x3ffffff */ |
a6bb11b2 | 700 | HOWTO (AARCH64_R (JUMP26), /* type */ |
a06ea964 NC |
701 | 2, /* rightshift */ |
702 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
703 | 26, /* bitsize */ | |
704 | TRUE, /* pc_relative */ | |
705 | 0, /* bitpos */ | |
706 | complain_overflow_signed, /* complain_on_overflow */ | |
707 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 708 | AARCH64_R_STR (JUMP26), /* name */ |
a06ea964 NC |
709 | FALSE, /* partial_inplace */ |
710 | 0x3ffffff, /* src_mask */ | |
711 | 0x3ffffff, /* dst_mask */ | |
712 | TRUE), /* pcrel_offset */ | |
713 | ||
714 | /* BL: ((S+A-P) >> 2) & 0x3ffffff */ | |
a6bb11b2 | 715 | HOWTO (AARCH64_R (CALL26), /* type */ |
a06ea964 NC |
716 | 2, /* rightshift */ |
717 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
718 | 26, /* bitsize */ | |
719 | TRUE, /* pc_relative */ | |
720 | 0, /* bitpos */ | |
721 | complain_overflow_signed, /* complain_on_overflow */ | |
722 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 723 | AARCH64_R_STR (CALL26), /* name */ |
a06ea964 NC |
724 | FALSE, /* partial_inplace */ |
725 | 0x3ffffff, /* src_mask */ | |
726 | 0x3ffffff, /* dst_mask */ | |
727 | TRUE), /* pcrel_offset */ | |
728 | ||
729 | /* LD/ST16: (S+A) & 0xffe */ | |
a6bb11b2 | 730 | HOWTO (AARCH64_R (LDST16_ABS_LO12_NC), /* type */ |
a06ea964 NC |
731 | 1, /* rightshift */ |
732 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
733 | 12, /* bitsize */ | |
734 | FALSE, /* pc_relative */ | |
735 | 0, /* bitpos */ | |
736 | complain_overflow_dont, /* complain_on_overflow */ | |
737 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 738 | AARCH64_R_STR (LDST16_ABS_LO12_NC), /* name */ |
a06ea964 NC |
739 | FALSE, /* partial_inplace */ |
740 | 0xffe, /* src_mask */ | |
741 | 0xffe, /* dst_mask */ | |
742 | FALSE), /* pcrel_offset */ | |
743 | ||
744 | /* LD/ST32: (S+A) & 0xffc */ | |
a6bb11b2 | 745 | HOWTO (AARCH64_R (LDST32_ABS_LO12_NC), /* type */ |
a06ea964 NC |
746 | 2, /* rightshift */ |
747 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
748 | 12, /* bitsize */ | |
749 | FALSE, /* pc_relative */ | |
750 | 0, /* bitpos */ | |
751 | complain_overflow_dont, /* complain_on_overflow */ | |
752 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 753 | AARCH64_R_STR (LDST32_ABS_LO12_NC), /* name */ |
a06ea964 NC |
754 | FALSE, /* partial_inplace */ |
755 | 0xffc, /* src_mask */ | |
756 | 0xffc, /* dst_mask */ | |
757 | FALSE), /* pcrel_offset */ | |
758 | ||
759 | /* LD/ST64: (S+A) & 0xff8 */ | |
a6bb11b2 | 760 | HOWTO (AARCH64_R (LDST64_ABS_LO12_NC), /* type */ |
a06ea964 NC |
761 | 3, /* rightshift */ |
762 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
763 | 12, /* bitsize */ | |
764 | FALSE, /* pc_relative */ | |
765 | 0, /* bitpos */ | |
766 | complain_overflow_dont, /* complain_on_overflow */ | |
767 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 768 | AARCH64_R_STR (LDST64_ABS_LO12_NC), /* name */ |
a06ea964 NC |
769 | FALSE, /* partial_inplace */ |
770 | 0xff8, /* src_mask */ | |
771 | 0xff8, /* dst_mask */ | |
772 | FALSE), /* pcrel_offset */ | |
773 | ||
a06ea964 | 774 | /* LD/ST128: (S+A) & 0xff0 */ |
a6bb11b2 | 775 | HOWTO (AARCH64_R (LDST128_ABS_LO12_NC), /* type */ |
a06ea964 NC |
776 | 4, /* rightshift */ |
777 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
778 | 12, /* bitsize */ | |
779 | FALSE, /* pc_relative */ | |
780 | 0, /* bitpos */ | |
781 | complain_overflow_dont, /* complain_on_overflow */ | |
782 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 783 | AARCH64_R_STR (LDST128_ABS_LO12_NC), /* name */ |
a06ea964 NC |
784 | FALSE, /* partial_inplace */ |
785 | 0xff0, /* src_mask */ | |
786 | 0xff0, /* dst_mask */ | |
787 | FALSE), /* pcrel_offset */ | |
788 | ||
f41aef5f RE |
789 | /* Set a load-literal immediate field to bits |
790 | 0x1FFFFC of G(S)-P */ | |
a6bb11b2 | 791 | HOWTO (AARCH64_R (GOT_LD_PREL19), /* type */ |
f41aef5f RE |
792 | 2, /* rightshift */ |
793 | 2, /* size (0 = byte,1 = short,2 = long) */ | |
794 | 19, /* bitsize */ | |
795 | TRUE, /* pc_relative */ | |
796 | 0, /* bitpos */ | |
797 | complain_overflow_signed, /* complain_on_overflow */ | |
798 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 799 | AARCH64_R_STR (GOT_LD_PREL19), /* name */ |
f41aef5f RE |
800 | FALSE, /* partial_inplace */ |
801 | 0xffffe0, /* src_mask */ | |
802 | 0xffffe0, /* dst_mask */ | |
803 | TRUE), /* pcrel_offset */ | |
804 | ||
a06ea964 NC |
805 | /* Get to the page for the GOT entry for the symbol |
806 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 807 | HOWTO (AARCH64_R (ADR_GOT_PAGE), /* type */ |
a06ea964 NC |
808 | 12, /* rightshift */ |
809 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
810 | 21, /* bitsize */ | |
811 | TRUE, /* pc_relative */ | |
812 | 0, /* bitpos */ | |
813 | complain_overflow_dont, /* complain_on_overflow */ | |
814 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 815 | AARCH64_R_STR (ADR_GOT_PAGE), /* name */ |
a06ea964 NC |
816 | FALSE, /* partial_inplace */ |
817 | 0x1fffff, /* src_mask */ | |
818 | 0x1fffff, /* dst_mask */ | |
819 | TRUE), /* pcrel_offset */ | |
820 | ||
a6bb11b2 YZ |
821 | /* LD64: GOT offset G(S) & 0xff8 */ |
822 | HOWTO64 (AARCH64_R (LD64_GOT_LO12_NC), /* type */ | |
a06ea964 NC |
823 | 3, /* rightshift */ |
824 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
825 | 12, /* bitsize */ | |
826 | FALSE, /* pc_relative */ | |
827 | 0, /* bitpos */ | |
828 | complain_overflow_dont, /* complain_on_overflow */ | |
829 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 830 | AARCH64_R_STR (LD64_GOT_LO12_NC), /* name */ |
a06ea964 NC |
831 | FALSE, /* partial_inplace */ |
832 | 0xff8, /* src_mask */ | |
833 | 0xff8, /* dst_mask */ | |
a6bb11b2 | 834 | FALSE), /* pcrel_offset */ |
a06ea964 | 835 | |
a6bb11b2 YZ |
836 | /* LD32: GOT offset G(S) & 0xffc */ |
837 | HOWTO32 (AARCH64_R (LD32_GOT_LO12_NC), /* type */ | |
838 | 2, /* rightshift */ | |
839 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
840 | 12, /* bitsize */ | |
841 | FALSE, /* pc_relative */ | |
842 | 0, /* bitpos */ | |
843 | complain_overflow_dont, /* complain_on_overflow */ | |
844 | bfd_elf_generic_reloc, /* special_function */ | |
845 | AARCH64_R_STR (LD32_GOT_LO12_NC), /* name */ | |
846 | FALSE, /* partial_inplace */ | |
847 | 0xffc, /* src_mask */ | |
848 | 0xffc, /* dst_mask */ | |
849 | FALSE), /* pcrel_offset */ | |
a06ea964 | 850 | |
a921b5bd JW |
851 | /* LD64: GOT offset to the page address of GOT table. |
852 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */ | |
853 | HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15), /* type */ | |
854 | 3, /* rightshift */ | |
855 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
856 | 12, /* bitsize */ | |
857 | FALSE, /* pc_relative */ | |
858 | 0, /* bitpos */ | |
859 | complain_overflow_unsigned, /* complain_on_overflow */ | |
860 | bfd_elf_generic_reloc, /* special_function */ | |
861 | AARCH64_R_STR (LD64_GOTPAGE_LO15), /* name */ | |
862 | FALSE, /* partial_inplace */ | |
863 | 0x7ff8, /* src_mask */ | |
864 | 0x7ff8, /* dst_mask */ | |
865 | FALSE), /* pcrel_offset */ | |
866 | ||
a06ea964 NC |
867 | /* Get to the page for the GOT entry for the symbol |
868 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 869 | HOWTO (AARCH64_R (TLSGD_ADR_PAGE21), /* type */ |
a06ea964 NC |
870 | 12, /* rightshift */ |
871 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
872 | 21, /* bitsize */ | |
873 | TRUE, /* pc_relative */ | |
874 | 0, /* bitpos */ | |
875 | complain_overflow_dont, /* complain_on_overflow */ | |
876 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 877 | AARCH64_R_STR (TLSGD_ADR_PAGE21), /* name */ |
a06ea964 NC |
878 | FALSE, /* partial_inplace */ |
879 | 0x1fffff, /* src_mask */ | |
880 | 0x1fffff, /* dst_mask */ | |
881 | TRUE), /* pcrel_offset */ | |
882 | ||
3c12b054 MS |
883 | HOWTO (AARCH64_R (TLSGD_ADR_PREL21), /* type */ |
884 | 0, /* rightshift */ | |
885 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
886 | 21, /* bitsize */ | |
887 | TRUE, /* pc_relative */ | |
888 | 0, /* bitpos */ | |
889 | complain_overflow_dont, /* complain_on_overflow */ | |
890 | bfd_elf_generic_reloc, /* special_function */ | |
891 | AARCH64_R_STR (TLSGD_ADR_PREL21), /* name */ | |
892 | FALSE, /* partial_inplace */ | |
893 | 0x1fffff, /* src_mask */ | |
894 | 0x1fffff, /* dst_mask */ | |
895 | TRUE), /* pcrel_offset */ | |
896 | ||
a06ea964 | 897 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ |
a6bb11b2 | 898 | HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC), /* type */ |
a06ea964 NC |
899 | 0, /* rightshift */ |
900 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
901 | 12, /* bitsize */ | |
902 | FALSE, /* pc_relative */ | |
903 | 0, /* bitpos */ | |
904 | complain_overflow_dont, /* complain_on_overflow */ | |
905 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 906 | AARCH64_R_STR (TLSGD_ADD_LO12_NC), /* name */ |
a06ea964 NC |
907 | FALSE, /* partial_inplace */ |
908 | 0xfff, /* src_mask */ | |
909 | 0xfff, /* dst_mask */ | |
910 | FALSE), /* pcrel_offset */ | |
911 | ||
a6bb11b2 | 912 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1), /* type */ |
a06ea964 NC |
913 | 16, /* rightshift */ |
914 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
915 | 16, /* bitsize */ | |
916 | FALSE, /* pc_relative */ | |
917 | 0, /* bitpos */ | |
918 | complain_overflow_dont, /* complain_on_overflow */ | |
919 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 920 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1), /* name */ |
a06ea964 NC |
921 | FALSE, /* partial_inplace */ |
922 | 0xffff, /* src_mask */ | |
923 | 0xffff, /* dst_mask */ | |
924 | FALSE), /* pcrel_offset */ | |
925 | ||
a6bb11b2 | 926 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */ |
a06ea964 NC |
927 | 0, /* rightshift */ |
928 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
49d8f92c | 929 | 16, /* bitsize */ |
a06ea964 NC |
930 | FALSE, /* pc_relative */ |
931 | 0, /* bitpos */ | |
932 | complain_overflow_dont, /* complain_on_overflow */ | |
933 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 934 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC), /* name */ |
a06ea964 NC |
935 | FALSE, /* partial_inplace */ |
936 | 0xffff, /* src_mask */ | |
937 | 0xffff, /* dst_mask */ | |
938 | FALSE), /* pcrel_offset */ | |
939 | ||
a6bb11b2 | 940 | HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21), /* type */ |
a06ea964 NC |
941 | 12, /* rightshift */ |
942 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
943 | 21, /* bitsize */ | |
944 | FALSE, /* pc_relative */ | |
945 | 0, /* bitpos */ | |
946 | complain_overflow_dont, /* complain_on_overflow */ | |
947 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 948 | AARCH64_R_STR (TLSIE_ADR_GOTTPREL_PAGE21), /* name */ |
a06ea964 NC |
949 | FALSE, /* partial_inplace */ |
950 | 0x1fffff, /* src_mask */ | |
951 | 0x1fffff, /* dst_mask */ | |
952 | FALSE), /* pcrel_offset */ | |
953 | ||
a6bb11b2 | 954 | HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC), /* type */ |
a06ea964 NC |
955 | 3, /* 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 (TLSIE_LD64_GOTTPREL_LO12_NC), /* name */ |
a06ea964 NC |
963 | FALSE, /* partial_inplace */ |
964 | 0xff8, /* src_mask */ | |
965 | 0xff8, /* dst_mask */ | |
966 | FALSE), /* pcrel_offset */ | |
967 | ||
a6bb11b2 YZ |
968 | HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC), /* type */ |
969 | 2, /* rightshift */ | |
970 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
971 | 12, /* bitsize */ | |
972 | FALSE, /* pc_relative */ | |
973 | 0, /* bitpos */ | |
974 | complain_overflow_dont, /* complain_on_overflow */ | |
975 | bfd_elf_generic_reloc, /* special_function */ | |
976 | AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC), /* name */ | |
977 | FALSE, /* partial_inplace */ | |
978 | 0xffc, /* src_mask */ | |
979 | 0xffc, /* dst_mask */ | |
980 | FALSE), /* pcrel_offset */ | |
981 | ||
982 | HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19), /* type */ | |
bb3f9ed8 | 983 | 2, /* rightshift */ |
a06ea964 | 984 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
043bf05a | 985 | 19, /* 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_LD_GOTTPREL_PREL19), /* name */ |
a06ea964 NC |
991 | FALSE, /* partial_inplace */ |
992 | 0x1ffffc, /* src_mask */ | |
993 | 0x1ffffc, /* dst_mask */ | |
994 | FALSE), /* pcrel_offset */ | |
995 | ||
a6bb11b2 | 996 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2), /* type */ |
bb3f9ed8 | 997 | 32, /* rightshift */ |
a06ea964 | 998 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 999 | 16, /* bitsize */ |
a06ea964 NC |
1000 | FALSE, /* pc_relative */ |
1001 | 0, /* bitpos */ | |
0172429c | 1002 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1003 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1004 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G2), /* name */ |
a06ea964 NC |
1005 | FALSE, /* partial_inplace */ |
1006 | 0xffff, /* src_mask */ | |
1007 | 0xffff, /* dst_mask */ | |
1008 | FALSE), /* pcrel_offset */ | |
1009 | ||
a6bb11b2 | 1010 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1), /* type */ |
bb3f9ed8 | 1011 | 16, /* rightshift */ |
a06ea964 | 1012 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1013 | 16, /* bitsize */ |
a06ea964 NC |
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 (TLSLE_MOVW_TPREL_G1), /* name */ |
a06ea964 NC |
1019 | FALSE, /* partial_inplace */ |
1020 | 0xffff, /* src_mask */ | |
1021 | 0xffff, /* dst_mask */ | |
1022 | FALSE), /* pcrel_offset */ | |
1023 | ||
a6bb11b2 | 1024 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */ |
bb3f9ed8 | 1025 | 16, /* rightshift */ |
a06ea964 | 1026 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1027 | 16, /* bitsize */ |
a06ea964 NC |
1028 | FALSE, /* pc_relative */ |
1029 | 0, /* bitpos */ | |
1030 | complain_overflow_dont, /* complain_on_overflow */ | |
1031 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1032 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC), /* name */ |
a06ea964 NC |
1033 | FALSE, /* partial_inplace */ |
1034 | 0xffff, /* src_mask */ | |
1035 | 0xffff, /* dst_mask */ | |
1036 | FALSE), /* pcrel_offset */ | |
1037 | ||
a6bb11b2 | 1038 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0), /* type */ |
a06ea964 NC |
1039 | 0, /* rightshift */ |
1040 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
07875fbc | 1041 | 16, /* 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 (TLSLE_MOVW_TPREL_G0), /* name */ |
a06ea964 NC |
1047 | FALSE, /* partial_inplace */ |
1048 | 0xffff, /* src_mask */ | |
1049 | 0xffff, /* dst_mask */ | |
1050 | FALSE), /* pcrel_offset */ | |
1051 | ||
a6bb11b2 | 1052 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC), /* type */ |
a06ea964 NC |
1053 | 0, /* rightshift */ |
1054 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
07875fbc | 1055 | 16, /* bitsize */ |
a06ea964 NC |
1056 | FALSE, /* pc_relative */ |
1057 | 0, /* bitpos */ | |
1058 | complain_overflow_dont, /* complain_on_overflow */ | |
1059 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1060 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC), /* name */ |
a06ea964 NC |
1061 | FALSE, /* partial_inplace */ |
1062 | 0xffff, /* src_mask */ | |
1063 | 0xffff, /* dst_mask */ | |
1064 | FALSE), /* pcrel_offset */ | |
1065 | ||
a6bb11b2 | 1066 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12), /* type */ |
bb3f9ed8 | 1067 | 12, /* rightshift */ |
a06ea964 NC |
1068 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1069 | 12, /* bitsize */ | |
1070 | FALSE, /* pc_relative */ | |
1071 | 0, /* bitpos */ | |
bab91cce | 1072 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1073 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1074 | AARCH64_R_STR (TLSLE_ADD_TPREL_HI12), /* name */ |
a06ea964 NC |
1075 | FALSE, /* partial_inplace */ |
1076 | 0xfff, /* src_mask */ | |
1077 | 0xfff, /* dst_mask */ | |
1078 | FALSE), /* pcrel_offset */ | |
1079 | ||
a6bb11b2 | 1080 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12), /* type */ |
a06ea964 NC |
1081 | 0, /* rightshift */ |
1082 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1083 | 12, /* bitsize */ | |
1084 | FALSE, /* pc_relative */ | |
1085 | 0, /* bitpos */ | |
36e6c140 | 1086 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1087 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1088 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12), /* name */ |
a06ea964 NC |
1089 | FALSE, /* partial_inplace */ |
1090 | 0xfff, /* src_mask */ | |
1091 | 0xfff, /* dst_mask */ | |
1092 | FALSE), /* pcrel_offset */ | |
1093 | ||
a6bb11b2 | 1094 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC), /* type */ |
a06ea964 NC |
1095 | 0, /* rightshift */ |
1096 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1097 | 12, /* bitsize */ | |
1098 | FALSE, /* pc_relative */ | |
1099 | 0, /* bitpos */ | |
1100 | complain_overflow_dont, /* complain_on_overflow */ | |
1101 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1102 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC), /* name */ |
a06ea964 NC |
1103 | FALSE, /* partial_inplace */ |
1104 | 0xfff, /* src_mask */ | |
1105 | 0xfff, /* dst_mask */ | |
1106 | FALSE), /* pcrel_offset */ | |
a06ea964 | 1107 | |
a6bb11b2 | 1108 | HOWTO (AARCH64_R (TLSDESC_LD_PREL19), /* type */ |
bb3f9ed8 | 1109 | 2, /* rightshift */ |
a06ea964 | 1110 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1ada945d | 1111 | 19, /* bitsize */ |
a06ea964 NC |
1112 | TRUE, /* pc_relative */ |
1113 | 0, /* bitpos */ | |
1114 | complain_overflow_dont, /* complain_on_overflow */ | |
1115 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1116 | AARCH64_R_STR (TLSDESC_LD_PREL19), /* name */ |
a06ea964 | 1117 | FALSE, /* partial_inplace */ |
1ada945d MS |
1118 | 0x0ffffe0, /* src_mask */ |
1119 | 0x0ffffe0, /* dst_mask */ | |
a06ea964 NC |
1120 | TRUE), /* pcrel_offset */ |
1121 | ||
a6bb11b2 | 1122 | HOWTO (AARCH64_R (TLSDESC_ADR_PREL21), /* type */ |
a06ea964 NC |
1123 | 0, /* rightshift */ |
1124 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1125 | 21, /* bitsize */ | |
1126 | TRUE, /* pc_relative */ | |
1127 | 0, /* bitpos */ | |
1128 | complain_overflow_dont, /* complain_on_overflow */ | |
1129 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1130 | AARCH64_R_STR (TLSDESC_ADR_PREL21), /* name */ |
a06ea964 NC |
1131 | FALSE, /* partial_inplace */ |
1132 | 0x1fffff, /* src_mask */ | |
1133 | 0x1fffff, /* dst_mask */ | |
1134 | TRUE), /* pcrel_offset */ | |
1135 | ||
1136 | /* Get to the page for the GOT entry for the symbol | |
1137 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 1138 | HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21), /* type */ |
a06ea964 NC |
1139 | 12, /* rightshift */ |
1140 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1141 | 21, /* bitsize */ | |
1142 | TRUE, /* pc_relative */ | |
1143 | 0, /* bitpos */ | |
1144 | complain_overflow_dont, /* complain_on_overflow */ | |
1145 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1146 | AARCH64_R_STR (TLSDESC_ADR_PAGE21), /* name */ |
a06ea964 NC |
1147 | FALSE, /* partial_inplace */ |
1148 | 0x1fffff, /* src_mask */ | |
1149 | 0x1fffff, /* dst_mask */ | |
1150 | TRUE), /* pcrel_offset */ | |
1151 | ||
a6bb11b2 YZ |
1152 | /* LD64: GOT offset G(S) & 0xff8. */ |
1153 | HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12_NC), /* type */ | |
a06ea964 NC |
1154 | 3, /* rightshift */ |
1155 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1156 | 12, /* bitsize */ | |
1157 | FALSE, /* pc_relative */ | |
1158 | 0, /* bitpos */ | |
1159 | complain_overflow_dont, /* complain_on_overflow */ | |
1160 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1161 | AARCH64_R_STR (TLSDESC_LD64_LO12_NC), /* name */ |
a06ea964 | 1162 | FALSE, /* partial_inplace */ |
a6bb11b2 YZ |
1163 | 0xff8, /* src_mask */ |
1164 | 0xff8, /* dst_mask */ | |
1165 | FALSE), /* pcrel_offset */ | |
1166 | ||
1167 | /* LD32: GOT offset G(S) & 0xffc. */ | |
1168 | HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC), /* type */ | |
1169 | 2, /* rightshift */ | |
1170 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1171 | 12, /* bitsize */ | |
1172 | FALSE, /* pc_relative */ | |
1173 | 0, /* bitpos */ | |
1174 | complain_overflow_dont, /* complain_on_overflow */ | |
1175 | bfd_elf_generic_reloc, /* special_function */ | |
1176 | AARCH64_R_STR (TLSDESC_LD32_LO12_NC), /* name */ | |
1177 | FALSE, /* partial_inplace */ | |
1178 | 0xffc, /* src_mask */ | |
1179 | 0xffc, /* dst_mask */ | |
a06ea964 NC |
1180 | FALSE), /* pcrel_offset */ |
1181 | ||
1182 | /* ADD: GOT offset G(S) & 0xfff. */ | |
a6bb11b2 | 1183 | HOWTO (AARCH64_R (TLSDESC_ADD_LO12_NC), /* type */ |
a06ea964 NC |
1184 | 0, /* rightshift */ |
1185 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1186 | 12, /* bitsize */ | |
1187 | FALSE, /* pc_relative */ | |
1188 | 0, /* bitpos */ | |
1189 | complain_overflow_dont, /* complain_on_overflow */ | |
1190 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1191 | AARCH64_R_STR (TLSDESC_ADD_LO12_NC), /* name */ |
a06ea964 NC |
1192 | FALSE, /* partial_inplace */ |
1193 | 0xfff, /* src_mask */ | |
1194 | 0xfff, /* dst_mask */ | |
1195 | FALSE), /* pcrel_offset */ | |
1196 | ||
a6bb11b2 | 1197 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G1), /* type */ |
bb3f9ed8 | 1198 | 16, /* rightshift */ |
a06ea964 NC |
1199 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1200 | 12, /* bitsize */ | |
1201 | FALSE, /* pc_relative */ | |
1202 | 0, /* bitpos */ | |
1203 | complain_overflow_dont, /* complain_on_overflow */ | |
1204 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1205 | AARCH64_R_STR (TLSDESC_OFF_G1), /* name */ |
a06ea964 NC |
1206 | FALSE, /* partial_inplace */ |
1207 | 0xffff, /* src_mask */ | |
1208 | 0xffff, /* dst_mask */ | |
1209 | FALSE), /* pcrel_offset */ | |
1210 | ||
a6bb11b2 | 1211 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC), /* type */ |
a06ea964 NC |
1212 | 0, /* rightshift */ |
1213 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1214 | 12, /* bitsize */ | |
1215 | FALSE, /* pc_relative */ | |
1216 | 0, /* bitpos */ | |
1217 | complain_overflow_dont, /* complain_on_overflow */ | |
1218 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1219 | AARCH64_R_STR (TLSDESC_OFF_G0_NC), /* name */ |
a06ea964 NC |
1220 | FALSE, /* partial_inplace */ |
1221 | 0xffff, /* src_mask */ | |
1222 | 0xffff, /* dst_mask */ | |
1223 | FALSE), /* pcrel_offset */ | |
1224 | ||
a6bb11b2 | 1225 | HOWTO64 (AARCH64_R (TLSDESC_LDR), /* type */ |
a06ea964 NC |
1226 | 0, /* rightshift */ |
1227 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1228 | 12, /* bitsize */ | |
1229 | FALSE, /* pc_relative */ | |
1230 | 0, /* bitpos */ | |
1231 | complain_overflow_dont, /* complain_on_overflow */ | |
1232 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1233 | AARCH64_R_STR (TLSDESC_LDR), /* name */ |
a06ea964 NC |
1234 | FALSE, /* partial_inplace */ |
1235 | 0x0, /* src_mask */ | |
1236 | 0x0, /* dst_mask */ | |
1237 | FALSE), /* pcrel_offset */ | |
1238 | ||
a6bb11b2 | 1239 | HOWTO64 (AARCH64_R (TLSDESC_ADD), /* type */ |
a06ea964 NC |
1240 | 0, /* rightshift */ |
1241 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1242 | 12, /* bitsize */ | |
1243 | FALSE, /* pc_relative */ | |
1244 | 0, /* bitpos */ | |
1245 | complain_overflow_dont, /* complain_on_overflow */ | |
1246 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1247 | AARCH64_R_STR (TLSDESC_ADD), /* name */ |
a06ea964 NC |
1248 | FALSE, /* partial_inplace */ |
1249 | 0x0, /* src_mask */ | |
1250 | 0x0, /* dst_mask */ | |
1251 | FALSE), /* pcrel_offset */ | |
1252 | ||
a6bb11b2 | 1253 | HOWTO (AARCH64_R (TLSDESC_CALL), /* type */ |
a06ea964 NC |
1254 | 0, /* rightshift */ |
1255 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
7366006f | 1256 | 0, /* bitsize */ |
a06ea964 NC |
1257 | FALSE, /* pc_relative */ |
1258 | 0, /* bitpos */ | |
1259 | complain_overflow_dont, /* complain_on_overflow */ | |
1260 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1261 | AARCH64_R_STR (TLSDESC_CALL), /* name */ |
a06ea964 NC |
1262 | FALSE, /* partial_inplace */ |
1263 | 0x0, /* src_mask */ | |
1264 | 0x0, /* dst_mask */ | |
1265 | FALSE), /* pcrel_offset */ | |
a6bb11b2 YZ |
1266 | |
1267 | HOWTO (AARCH64_R (COPY), /* type */ | |
1268 | 0, /* rightshift */ | |
1269 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1270 | 64, /* bitsize */ | |
1271 | FALSE, /* pc_relative */ | |
1272 | 0, /* bitpos */ | |
1273 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1274 | bfd_elf_generic_reloc, /* special_function */ | |
1275 | AARCH64_R_STR (COPY), /* name */ | |
1276 | TRUE, /* partial_inplace */ | |
1277 | 0xffffffff, /* src_mask */ | |
1278 | 0xffffffff, /* dst_mask */ | |
1279 | FALSE), /* pcrel_offset */ | |
1280 | ||
1281 | HOWTO (AARCH64_R (GLOB_DAT), /* type */ | |
1282 | 0, /* rightshift */ | |
1283 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1284 | 64, /* bitsize */ | |
1285 | FALSE, /* pc_relative */ | |
1286 | 0, /* bitpos */ | |
1287 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1288 | bfd_elf_generic_reloc, /* special_function */ | |
1289 | AARCH64_R_STR (GLOB_DAT), /* name */ | |
1290 | TRUE, /* partial_inplace */ | |
1291 | 0xffffffff, /* src_mask */ | |
1292 | 0xffffffff, /* dst_mask */ | |
1293 | FALSE), /* pcrel_offset */ | |
1294 | ||
1295 | HOWTO (AARCH64_R (JUMP_SLOT), /* type */ | |
1296 | 0, /* rightshift */ | |
1297 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1298 | 64, /* bitsize */ | |
1299 | FALSE, /* pc_relative */ | |
1300 | 0, /* bitpos */ | |
1301 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1302 | bfd_elf_generic_reloc, /* special_function */ | |
1303 | AARCH64_R_STR (JUMP_SLOT), /* name */ | |
1304 | TRUE, /* partial_inplace */ | |
1305 | 0xffffffff, /* src_mask */ | |
1306 | 0xffffffff, /* dst_mask */ | |
1307 | FALSE), /* pcrel_offset */ | |
1308 | ||
1309 | HOWTO (AARCH64_R (RELATIVE), /* type */ | |
1310 | 0, /* rightshift */ | |
1311 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1312 | 64, /* bitsize */ | |
1313 | FALSE, /* pc_relative */ | |
1314 | 0, /* bitpos */ | |
1315 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1316 | bfd_elf_generic_reloc, /* special_function */ | |
1317 | AARCH64_R_STR (RELATIVE), /* name */ | |
1318 | TRUE, /* partial_inplace */ | |
1319 | ALL_ONES, /* src_mask */ | |
1320 | ALL_ONES, /* dst_mask */ | |
1321 | FALSE), /* pcrel_offset */ | |
1322 | ||
1323 | HOWTO (AARCH64_R (TLS_DTPMOD), /* type */ | |
1324 | 0, /* rightshift */ | |
1325 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1326 | 64, /* bitsize */ | |
1327 | FALSE, /* pc_relative */ | |
1328 | 0, /* bitpos */ | |
1329 | complain_overflow_dont, /* complain_on_overflow */ | |
1330 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
1331 | #if ARCH_SIZE == 64 |
1332 | AARCH64_R_STR (TLS_DTPMOD64), /* name */ | |
1333 | #else | |
a6bb11b2 | 1334 | AARCH64_R_STR (TLS_DTPMOD), /* name */ |
da0781dc | 1335 | #endif |
a6bb11b2 YZ |
1336 | FALSE, /* partial_inplace */ |
1337 | 0, /* src_mask */ | |
1338 | ALL_ONES, /* dst_mask */ | |
1339 | FALSE), /* pc_reloffset */ | |
1340 | ||
1341 | HOWTO (AARCH64_R (TLS_DTPREL), /* type */ | |
1342 | 0, /* rightshift */ | |
1343 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1344 | 64, /* bitsize */ | |
1345 | FALSE, /* pc_relative */ | |
1346 | 0, /* bitpos */ | |
1347 | complain_overflow_dont, /* complain_on_overflow */ | |
1348 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
1349 | #if ARCH_SIZE == 64 |
1350 | AARCH64_R_STR (TLS_DTPREL64), /* name */ | |
1351 | #else | |
a6bb11b2 | 1352 | AARCH64_R_STR (TLS_DTPREL), /* name */ |
da0781dc | 1353 | #endif |
a6bb11b2 YZ |
1354 | FALSE, /* partial_inplace */ |
1355 | 0, /* src_mask */ | |
1356 | ALL_ONES, /* dst_mask */ | |
1357 | FALSE), /* pcrel_offset */ | |
1358 | ||
1359 | HOWTO (AARCH64_R (TLS_TPREL), /* type */ | |
1360 | 0, /* rightshift */ | |
1361 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1362 | 64, /* bitsize */ | |
1363 | FALSE, /* pc_relative */ | |
1364 | 0, /* bitpos */ | |
1365 | complain_overflow_dont, /* complain_on_overflow */ | |
1366 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
1367 | #if ARCH_SIZE == 64 |
1368 | AARCH64_R_STR (TLS_TPREL64), /* name */ | |
1369 | #else | |
a6bb11b2 | 1370 | AARCH64_R_STR (TLS_TPREL), /* name */ |
da0781dc | 1371 | #endif |
a6bb11b2 YZ |
1372 | FALSE, /* partial_inplace */ |
1373 | 0, /* src_mask */ | |
1374 | ALL_ONES, /* dst_mask */ | |
1375 | FALSE), /* pcrel_offset */ | |
1376 | ||
1377 | HOWTO (AARCH64_R (TLSDESC), /* type */ | |
1378 | 0, /* rightshift */ | |
1379 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1380 | 64, /* bitsize */ | |
1381 | FALSE, /* pc_relative */ | |
1382 | 0, /* bitpos */ | |
1383 | complain_overflow_dont, /* complain_on_overflow */ | |
1384 | bfd_elf_generic_reloc, /* special_function */ | |
1385 | AARCH64_R_STR (TLSDESC), /* name */ | |
1386 | FALSE, /* partial_inplace */ | |
1387 | 0, /* src_mask */ | |
1388 | ALL_ONES, /* dst_mask */ | |
1389 | FALSE), /* pcrel_offset */ | |
1390 | ||
1391 | HOWTO (AARCH64_R (IRELATIVE), /* type */ | |
1392 | 0, /* rightshift */ | |
1393 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1394 | 64, /* bitsize */ | |
1395 | FALSE, /* pc_relative */ | |
1396 | 0, /* bitpos */ | |
1397 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1398 | bfd_elf_generic_reloc, /* special_function */ | |
1399 | AARCH64_R_STR (IRELATIVE), /* name */ | |
1400 | FALSE, /* partial_inplace */ | |
1401 | 0, /* src_mask */ | |
1402 | ALL_ONES, /* dst_mask */ | |
1403 | FALSE), /* pcrel_offset */ | |
1404 | ||
1405 | EMPTY_HOWTO (0), | |
a06ea964 NC |
1406 | }; |
1407 | ||
a6bb11b2 YZ |
1408 | static reloc_howto_type elfNN_aarch64_howto_none = |
1409 | HOWTO (R_AARCH64_NONE, /* type */ | |
1410 | 0, /* rightshift */ | |
6346d5ca | 1411 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a6bb11b2 YZ |
1412 | 0, /* bitsize */ |
1413 | FALSE, /* pc_relative */ | |
1414 | 0, /* bitpos */ | |
1415 | complain_overflow_dont,/* complain_on_overflow */ | |
1416 | bfd_elf_generic_reloc, /* special_function */ | |
1417 | "R_AARCH64_NONE", /* name */ | |
1418 | FALSE, /* partial_inplace */ | |
1419 | 0, /* src_mask */ | |
1420 | 0, /* dst_mask */ | |
1421 | FALSE); /* pcrel_offset */ | |
1422 | ||
1423 | /* Given HOWTO, return the bfd internal relocation enumerator. */ | |
1424 | ||
1425 | static bfd_reloc_code_real_type | |
1426 | elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type *howto) | |
1427 | { | |
1428 | const int size | |
1429 | = (int) ARRAY_SIZE (elfNN_aarch64_howto_table); | |
1430 | const ptrdiff_t offset | |
1431 | = howto - elfNN_aarch64_howto_table; | |
1432 | ||
1433 | if (offset > 0 && offset < size - 1) | |
1434 | return BFD_RELOC_AARCH64_RELOC_START + offset; | |
1435 | ||
1436 | if (howto == &elfNN_aarch64_howto_none) | |
1437 | return BFD_RELOC_AARCH64_NONE; | |
1438 | ||
1439 | return BFD_RELOC_AARCH64_RELOC_START; | |
1440 | } | |
1441 | ||
1442 | /* Given R_TYPE, return the bfd internal relocation enumerator. */ | |
1443 | ||
1444 | static bfd_reloc_code_real_type | |
1445 | elfNN_aarch64_bfd_reloc_from_type (unsigned int r_type) | |
1446 | { | |
1447 | static bfd_boolean initialized_p = FALSE; | |
1448 | /* Indexed by R_TYPE, values are offsets in the howto_table. */ | |
1449 | static unsigned int offsets[R_AARCH64_end]; | |
1450 | ||
1451 | if (initialized_p == FALSE) | |
1452 | { | |
1453 | unsigned int i; | |
1454 | ||
1455 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) | |
1456 | if (elfNN_aarch64_howto_table[i].type != 0) | |
1457 | offsets[elfNN_aarch64_howto_table[i].type] = i; | |
1458 | ||
1459 | initialized_p = TRUE; | |
1460 | } | |
1461 | ||
1462 | if (r_type == R_AARCH64_NONE || r_type == R_AARCH64_NULL) | |
1463 | return BFD_RELOC_AARCH64_NONE; | |
1464 | ||
5860e3f8 NC |
1465 | /* PR 17512: file: b371e70a. */ |
1466 | if (r_type >= R_AARCH64_end) | |
1467 | { | |
1468 | _bfd_error_handler (_("Invalid AArch64 reloc number: %d"), r_type); | |
1469 | bfd_set_error (bfd_error_bad_value); | |
1470 | return BFD_RELOC_AARCH64_NONE; | |
1471 | } | |
1472 | ||
a6bb11b2 YZ |
1473 | return BFD_RELOC_AARCH64_RELOC_START + offsets[r_type]; |
1474 | } | |
1475 | ||
1476 | struct elf_aarch64_reloc_map | |
1477 | { | |
1478 | bfd_reloc_code_real_type from; | |
1479 | bfd_reloc_code_real_type to; | |
1480 | }; | |
1481 | ||
1482 | /* Map bfd generic reloc to AArch64-specific reloc. */ | |
1483 | static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map[] = | |
1484 | { | |
1485 | {BFD_RELOC_NONE, BFD_RELOC_AARCH64_NONE}, | |
1486 | ||
1487 | /* Basic data relocations. */ | |
1488 | {BFD_RELOC_CTOR, BFD_RELOC_AARCH64_NN}, | |
1489 | {BFD_RELOC_64, BFD_RELOC_AARCH64_64}, | |
1490 | {BFD_RELOC_32, BFD_RELOC_AARCH64_32}, | |
1491 | {BFD_RELOC_16, BFD_RELOC_AARCH64_16}, | |
1492 | {BFD_RELOC_64_PCREL, BFD_RELOC_AARCH64_64_PCREL}, | |
1493 | {BFD_RELOC_32_PCREL, BFD_RELOC_AARCH64_32_PCREL}, | |
1494 | {BFD_RELOC_16_PCREL, BFD_RELOC_AARCH64_16_PCREL}, | |
1495 | }; | |
1496 | ||
1497 | /* Given the bfd internal relocation enumerator in CODE, return the | |
1498 | corresponding howto entry. */ | |
1499 | ||
1500 | static reloc_howto_type * | |
1501 | elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code) | |
1502 | { | |
1503 | unsigned int i; | |
1504 | ||
1505 | /* Convert bfd generic reloc to AArch64-specific reloc. */ | |
1506 | if (code < BFD_RELOC_AARCH64_RELOC_START | |
1507 | || code > BFD_RELOC_AARCH64_RELOC_END) | |
1508 | for (i = 0; i < ARRAY_SIZE (elf_aarch64_reloc_map); i++) | |
1509 | if (elf_aarch64_reloc_map[i].from == code) | |
1510 | { | |
1511 | code = elf_aarch64_reloc_map[i].to; | |
1512 | break; | |
1513 | } | |
1514 | ||
1515 | if (code > BFD_RELOC_AARCH64_RELOC_START | |
1516 | && code < BFD_RELOC_AARCH64_RELOC_END) | |
1517 | if (elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START].type) | |
1518 | return &elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START]; | |
1519 | ||
54757ed1 AP |
1520 | if (code == BFD_RELOC_AARCH64_NONE) |
1521 | return &elfNN_aarch64_howto_none; | |
1522 | ||
a6bb11b2 YZ |
1523 | return NULL; |
1524 | } | |
1525 | ||
a06ea964 | 1526 | static reloc_howto_type * |
cec5225b | 1527 | elfNN_aarch64_howto_from_type (unsigned int r_type) |
a06ea964 | 1528 | { |
a6bb11b2 YZ |
1529 | bfd_reloc_code_real_type val; |
1530 | reloc_howto_type *howto; | |
1531 | ||
cec5225b YZ |
1532 | #if ARCH_SIZE == 32 |
1533 | if (r_type > 256) | |
1534 | { | |
1535 | bfd_set_error (bfd_error_bad_value); | |
1536 | return NULL; | |
1537 | } | |
1538 | #endif | |
1539 | ||
a6bb11b2 YZ |
1540 | if (r_type == R_AARCH64_NONE) |
1541 | return &elfNN_aarch64_howto_none; | |
a06ea964 | 1542 | |
a6bb11b2 YZ |
1543 | val = elfNN_aarch64_bfd_reloc_from_type (r_type); |
1544 | howto = elfNN_aarch64_howto_from_bfd_reloc (val); | |
a06ea964 | 1545 | |
a6bb11b2 YZ |
1546 | if (howto != NULL) |
1547 | return howto; | |
a06ea964 | 1548 | |
a06ea964 NC |
1549 | bfd_set_error (bfd_error_bad_value); |
1550 | return NULL; | |
1551 | } | |
1552 | ||
1553 | static void | |
cec5225b | 1554 | elfNN_aarch64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc, |
a06ea964 NC |
1555 | Elf_Internal_Rela *elf_reloc) |
1556 | { | |
1557 | unsigned int r_type; | |
1558 | ||
cec5225b YZ |
1559 | r_type = ELFNN_R_TYPE (elf_reloc->r_info); |
1560 | bfd_reloc->howto = elfNN_aarch64_howto_from_type (r_type); | |
a06ea964 NC |
1561 | } |
1562 | ||
a06ea964 | 1563 | static reloc_howto_type * |
cec5225b | 1564 | elfNN_aarch64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
1565 | bfd_reloc_code_real_type code) |
1566 | { | |
a6bb11b2 | 1567 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (code); |
a06ea964 | 1568 | |
a6bb11b2 YZ |
1569 | if (howto != NULL) |
1570 | return howto; | |
a06ea964 NC |
1571 | |
1572 | bfd_set_error (bfd_error_bad_value); | |
1573 | return NULL; | |
1574 | } | |
1575 | ||
1576 | static reloc_howto_type * | |
cec5225b | 1577 | elfNN_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
1578 | const char *r_name) |
1579 | { | |
1580 | unsigned int i; | |
1581 | ||
a6bb11b2 YZ |
1582 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) |
1583 | if (elfNN_aarch64_howto_table[i].name != NULL | |
1584 | && strcasecmp (elfNN_aarch64_howto_table[i].name, r_name) == 0) | |
1585 | return &elfNN_aarch64_howto_table[i]; | |
a06ea964 NC |
1586 | |
1587 | return NULL; | |
1588 | } | |
1589 | ||
6d00b590 | 1590 | #define TARGET_LITTLE_SYM aarch64_elfNN_le_vec |
cec5225b | 1591 | #define TARGET_LITTLE_NAME "elfNN-littleaarch64" |
6d00b590 | 1592 | #define TARGET_BIG_SYM aarch64_elfNN_be_vec |
cec5225b | 1593 | #define TARGET_BIG_NAME "elfNN-bigaarch64" |
a06ea964 | 1594 | |
a06ea964 NC |
1595 | /* The linker script knows the section names for placement. |
1596 | The entry_names are used to do simple name mangling on the stubs. | |
1597 | Given a function name, and its type, the stub can be found. The | |
1598 | name can be changed. The only requirement is the %s be present. */ | |
1599 | #define STUB_ENTRY_NAME "__%s_veneer" | |
1600 | ||
1601 | /* The name of the dynamic interpreter. This is put in the .interp | |
1602 | section. */ | |
1603 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
1604 | ||
1605 | #define AARCH64_MAX_FWD_BRANCH_OFFSET \ | |
1606 | (((1 << 25) - 1) << 2) | |
1607 | #define AARCH64_MAX_BWD_BRANCH_OFFSET \ | |
1608 | (-((1 << 25) << 2)) | |
1609 | ||
1610 | #define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1) | |
1611 | #define AARCH64_MIN_ADRP_IMM (-(1 << 20)) | |
1612 | ||
1613 | static int | |
1614 | aarch64_valid_for_adrp_p (bfd_vma value, bfd_vma place) | |
1615 | { | |
1616 | bfd_signed_vma offset = (bfd_signed_vma) (PG (value) - PG (place)) >> 12; | |
1617 | return offset <= AARCH64_MAX_ADRP_IMM && offset >= AARCH64_MIN_ADRP_IMM; | |
1618 | } | |
1619 | ||
1620 | static int | |
1621 | aarch64_valid_branch_p (bfd_vma value, bfd_vma place) | |
1622 | { | |
1623 | bfd_signed_vma offset = (bfd_signed_vma) (value - place); | |
1624 | return (offset <= AARCH64_MAX_FWD_BRANCH_OFFSET | |
1625 | && offset >= AARCH64_MAX_BWD_BRANCH_OFFSET); | |
1626 | } | |
1627 | ||
1628 | static const uint32_t aarch64_adrp_branch_stub [] = | |
1629 | { | |
1630 | 0x90000010, /* adrp ip0, X */ | |
1631 | /* R_AARCH64_ADR_HI21_PCREL(X) */ | |
1632 | 0x91000210, /* add ip0, ip0, :lo12:X */ | |
1633 | /* R_AARCH64_ADD_ABS_LO12_NC(X) */ | |
1634 | 0xd61f0200, /* br ip0 */ | |
1635 | }; | |
1636 | ||
1637 | static const uint32_t aarch64_long_branch_stub[] = | |
1638 | { | |
cec5225b | 1639 | #if ARCH_SIZE == 64 |
a06ea964 | 1640 | 0x58000090, /* ldr ip0, 1f */ |
cec5225b YZ |
1641 | #else |
1642 | 0x18000090, /* ldr wip0, 1f */ | |
1643 | #endif | |
a06ea964 NC |
1644 | 0x10000011, /* adr ip1, #0 */ |
1645 | 0x8b110210, /* add ip0, ip0, ip1 */ | |
1646 | 0xd61f0200, /* br ip0 */ | |
cec5225b YZ |
1647 | 0x00000000, /* 1: .xword or .word |
1648 | R_AARCH64_PRELNN(X) + 12 | |
a06ea964 NC |
1649 | */ |
1650 | 0x00000000, | |
1651 | }; | |
1652 | ||
68fcca92 JW |
1653 | static const uint32_t aarch64_erratum_835769_stub[] = |
1654 | { | |
1655 | 0x00000000, /* Placeholder for multiply accumulate. */ | |
1656 | 0x14000000, /* b <label> */ | |
1657 | }; | |
1658 | ||
4106101c MS |
1659 | static const uint32_t aarch64_erratum_843419_stub[] = |
1660 | { | |
1661 | 0x00000000, /* Placeholder for LDR instruction. */ | |
1662 | 0x14000000, /* b <label> */ | |
1663 | }; | |
1664 | ||
a06ea964 NC |
1665 | /* Section name for stubs is the associated section name plus this |
1666 | string. */ | |
1667 | #define STUB_SUFFIX ".stub" | |
1668 | ||
cec5225b | 1669 | enum elf_aarch64_stub_type |
a06ea964 NC |
1670 | { |
1671 | aarch64_stub_none, | |
1672 | aarch64_stub_adrp_branch, | |
1673 | aarch64_stub_long_branch, | |
68fcca92 | 1674 | aarch64_stub_erratum_835769_veneer, |
4106101c | 1675 | aarch64_stub_erratum_843419_veneer, |
a06ea964 NC |
1676 | }; |
1677 | ||
cec5225b | 1678 | struct elf_aarch64_stub_hash_entry |
a06ea964 NC |
1679 | { |
1680 | /* Base hash table entry structure. */ | |
1681 | struct bfd_hash_entry root; | |
1682 | ||
1683 | /* The stub section. */ | |
1684 | asection *stub_sec; | |
1685 | ||
1686 | /* Offset within stub_sec of the beginning of this stub. */ | |
1687 | bfd_vma stub_offset; | |
1688 | ||
1689 | /* Given the symbol's value and its section we can determine its final | |
1690 | value when building the stubs (so the stub knows where to jump). */ | |
1691 | bfd_vma target_value; | |
1692 | asection *target_section; | |
1693 | ||
cec5225b | 1694 | enum elf_aarch64_stub_type stub_type; |
a06ea964 NC |
1695 | |
1696 | /* The symbol table entry, if any, that this was derived from. */ | |
cec5225b | 1697 | struct elf_aarch64_link_hash_entry *h; |
a06ea964 NC |
1698 | |
1699 | /* Destination symbol type */ | |
1700 | unsigned char st_type; | |
1701 | ||
1702 | /* Where this stub is being called from, or, in the case of combined | |
1703 | stub sections, the first input section in the group. */ | |
1704 | asection *id_sec; | |
1705 | ||
1706 | /* The name for the local symbol at the start of this stub. The | |
1707 | stub name in the hash table has to be unique; this does not, so | |
1708 | it can be friendlier. */ | |
1709 | char *output_name; | |
68fcca92 JW |
1710 | |
1711 | /* The instruction which caused this stub to be generated (only valid for | |
1712 | erratum 835769 workaround stubs at present). */ | |
1713 | uint32_t veneered_insn; | |
4106101c MS |
1714 | |
1715 | /* In an erratum 843419 workaround stub, the ADRP instruction offset. */ | |
1716 | bfd_vma adrp_offset; | |
a06ea964 NC |
1717 | }; |
1718 | ||
1719 | /* Used to build a map of a section. This is required for mixed-endian | |
1720 | code/data. */ | |
1721 | ||
cec5225b | 1722 | typedef struct elf_elf_section_map |
a06ea964 NC |
1723 | { |
1724 | bfd_vma vma; | |
1725 | char type; | |
1726 | } | |
cec5225b | 1727 | elf_aarch64_section_map; |
a06ea964 NC |
1728 | |
1729 | ||
1730 | typedef struct _aarch64_elf_section_data | |
1731 | { | |
1732 | struct bfd_elf_section_data elf; | |
1733 | unsigned int mapcount; | |
1734 | unsigned int mapsize; | |
cec5225b | 1735 | elf_aarch64_section_map *map; |
a06ea964 NC |
1736 | } |
1737 | _aarch64_elf_section_data; | |
1738 | ||
cec5225b | 1739 | #define elf_aarch64_section_data(sec) \ |
a06ea964 NC |
1740 | ((_aarch64_elf_section_data *) elf_section_data (sec)) |
1741 | ||
4e8516b2 AP |
1742 | /* The size of the thread control block which is defined to be two pointers. */ |
1743 | #define TCB_SIZE (ARCH_SIZE/8)*2 | |
a06ea964 NC |
1744 | |
1745 | struct elf_aarch64_local_symbol | |
1746 | { | |
1747 | unsigned int got_type; | |
1748 | bfd_signed_vma got_refcount; | |
1749 | bfd_vma got_offset; | |
1750 | ||
1751 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The | |
1752 | offset is from the end of the jump table and reserved entries | |
1753 | within the PLTGOT. | |
1754 | ||
1755 | The magic value (bfd_vma) -1 indicates that an offset has not be | |
1756 | allocated. */ | |
1757 | bfd_vma tlsdesc_got_jump_table_offset; | |
1758 | }; | |
1759 | ||
1760 | struct elf_aarch64_obj_tdata | |
1761 | { | |
1762 | struct elf_obj_tdata root; | |
1763 | ||
1764 | /* local symbol descriptors */ | |
1765 | struct elf_aarch64_local_symbol *locals; | |
1766 | ||
1767 | /* Zero to warn when linking objects with incompatible enum sizes. */ | |
1768 | int no_enum_size_warning; | |
1769 | ||
1770 | /* Zero to warn when linking objects with incompatible wchar_t sizes. */ | |
1771 | int no_wchar_size_warning; | |
1772 | }; | |
1773 | ||
1774 | #define elf_aarch64_tdata(bfd) \ | |
1775 | ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any) | |
1776 | ||
cec5225b | 1777 | #define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals) |
a06ea964 NC |
1778 | |
1779 | #define is_aarch64_elf(bfd) \ | |
1780 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
1781 | && elf_tdata (bfd) != NULL \ | |
1782 | && elf_object_id (bfd) == AARCH64_ELF_DATA) | |
1783 | ||
1784 | static bfd_boolean | |
cec5225b | 1785 | elfNN_aarch64_mkobject (bfd *abfd) |
a06ea964 NC |
1786 | { |
1787 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_aarch64_obj_tdata), | |
1788 | AARCH64_ELF_DATA); | |
1789 | } | |
1790 | ||
cec5225b YZ |
1791 | #define elf_aarch64_hash_entry(ent) \ |
1792 | ((struct elf_aarch64_link_hash_entry *)(ent)) | |
a06ea964 NC |
1793 | |
1794 | #define GOT_UNKNOWN 0 | |
1795 | #define GOT_NORMAL 1 | |
1796 | #define GOT_TLS_GD 2 | |
1797 | #define GOT_TLS_IE 4 | |
1798 | #define GOT_TLSDESC_GD 8 | |
1799 | ||
1800 | #define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD)) | |
1801 | ||
1802 | /* AArch64 ELF linker hash entry. */ | |
cec5225b | 1803 | struct elf_aarch64_link_hash_entry |
a06ea964 NC |
1804 | { |
1805 | struct elf_link_hash_entry root; | |
1806 | ||
1807 | /* Track dynamic relocs copied for this symbol. */ | |
1808 | struct elf_dyn_relocs *dyn_relocs; | |
1809 | ||
a06ea964 NC |
1810 | /* Since PLT entries have variable size, we need to record the |
1811 | index into .got.plt instead of recomputing it from the PLT | |
1812 | offset. */ | |
1813 | bfd_signed_vma plt_got_offset; | |
1814 | ||
1815 | /* Bit mask representing the type of GOT entry(s) if any required by | |
1816 | this symbol. */ | |
1817 | unsigned int got_type; | |
1818 | ||
1819 | /* A pointer to the most recently used stub hash entry against this | |
1820 | symbol. */ | |
cec5225b | 1821 | struct elf_aarch64_stub_hash_entry *stub_cache; |
a06ea964 NC |
1822 | |
1823 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset | |
1824 | is from the end of the jump table and reserved entries within the PLTGOT. | |
1825 | ||
1826 | The magic value (bfd_vma) -1 indicates that an offset has not | |
1827 | be allocated. */ | |
1828 | bfd_vma tlsdesc_got_jump_table_offset; | |
1829 | }; | |
1830 | ||
1831 | static unsigned int | |
cec5225b | 1832 | elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry *h, |
a06ea964 NC |
1833 | bfd *abfd, |
1834 | unsigned long r_symndx) | |
1835 | { | |
1836 | if (h) | |
cec5225b | 1837 | return elf_aarch64_hash_entry (h)->got_type; |
a06ea964 | 1838 | |
cec5225b | 1839 | if (! elf_aarch64_locals (abfd)) |
a06ea964 NC |
1840 | return GOT_UNKNOWN; |
1841 | ||
cec5225b | 1842 | return elf_aarch64_locals (abfd)[r_symndx].got_type; |
a06ea964 NC |
1843 | } |
1844 | ||
a06ea964 | 1845 | /* Get the AArch64 elf linker hash table from a link_info structure. */ |
cec5225b YZ |
1846 | #define elf_aarch64_hash_table(info) \ |
1847 | ((struct elf_aarch64_link_hash_table *) ((info)->hash)) | |
a06ea964 NC |
1848 | |
1849 | #define aarch64_stub_hash_lookup(table, string, create, copy) \ | |
cec5225b | 1850 | ((struct elf_aarch64_stub_hash_entry *) \ |
a06ea964 NC |
1851 | bfd_hash_lookup ((table), (string), (create), (copy))) |
1852 | ||
1853 | /* AArch64 ELF linker hash table. */ | |
cec5225b | 1854 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
1855 | { |
1856 | /* The main hash table. */ | |
1857 | struct elf_link_hash_table root; | |
1858 | ||
1859 | /* Nonzero to force PIC branch veneers. */ | |
1860 | int pic_veneer; | |
1861 | ||
68fcca92 JW |
1862 | /* Fix erratum 835769. */ |
1863 | int fix_erratum_835769; | |
1864 | ||
4106101c MS |
1865 | /* Fix erratum 843419. */ |
1866 | int fix_erratum_843419; | |
1867 | ||
1868 | /* Enable ADRP->ADR rewrite for erratum 843419 workaround. */ | |
1869 | int fix_erratum_843419_adr; | |
1870 | ||
a06ea964 NC |
1871 | /* The number of bytes in the initial entry in the PLT. */ |
1872 | bfd_size_type plt_header_size; | |
1873 | ||
1874 | /* The number of bytes in the subsequent PLT etries. */ | |
1875 | bfd_size_type plt_entry_size; | |
1876 | ||
1877 | /* Short-cuts to get to dynamic linker sections. */ | |
1878 | asection *sdynbss; | |
1879 | asection *srelbss; | |
1880 | ||
1881 | /* Small local sym cache. */ | |
1882 | struct sym_cache sym_cache; | |
1883 | ||
1884 | /* For convenience in allocate_dynrelocs. */ | |
1885 | bfd *obfd; | |
1886 | ||
1887 | /* The amount of space used by the reserved portion of the sgotplt | |
1888 | section, plus whatever space is used by the jump slots. */ | |
1889 | bfd_vma sgotplt_jump_table_size; | |
1890 | ||
1891 | /* The stub hash table. */ | |
1892 | struct bfd_hash_table stub_hash_table; | |
1893 | ||
1894 | /* Linker stub bfd. */ | |
1895 | bfd *stub_bfd; | |
1896 | ||
1897 | /* Linker call-backs. */ | |
1898 | asection *(*add_stub_section) (const char *, asection *); | |
1899 | void (*layout_sections_again) (void); | |
1900 | ||
1901 | /* Array to keep track of which stub sections have been created, and | |
1902 | information on stub grouping. */ | |
1903 | struct map_stub | |
1904 | { | |
1905 | /* This is the section to which stubs in the group will be | |
1906 | attached. */ | |
1907 | asection *link_sec; | |
1908 | /* The stub section. */ | |
1909 | asection *stub_sec; | |
1910 | } *stub_group; | |
1911 | ||
cec5225b | 1912 | /* Assorted information used by elfNN_aarch64_size_stubs. */ |
a06ea964 NC |
1913 | unsigned int bfd_count; |
1914 | int top_index; | |
1915 | asection **input_list; | |
1916 | ||
1917 | /* The offset into splt of the PLT entry for the TLS descriptor | |
1918 | resolver. Special values are 0, if not necessary (or not found | |
1919 | to be necessary yet), and -1 if needed but not determined | |
1920 | yet. */ | |
1921 | bfd_vma tlsdesc_plt; | |
1922 | ||
1923 | /* The GOT offset for the lazy trampoline. Communicated to the | |
1924 | loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1 | |
1925 | indicates an offset is not allocated. */ | |
1926 | bfd_vma dt_tlsdesc_got; | |
1419bbe5 WN |
1927 | |
1928 | /* Used by local STT_GNU_IFUNC symbols. */ | |
1929 | htab_t loc_hash_table; | |
1930 | void * loc_hash_memory; | |
a06ea964 NC |
1931 | }; |
1932 | ||
a06ea964 NC |
1933 | /* Create an entry in an AArch64 ELF linker hash table. */ |
1934 | ||
1935 | static struct bfd_hash_entry * | |
cec5225b | 1936 | elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry, |
a06ea964 NC |
1937 | struct bfd_hash_table *table, |
1938 | const char *string) | |
1939 | { | |
cec5225b YZ |
1940 | struct elf_aarch64_link_hash_entry *ret = |
1941 | (struct elf_aarch64_link_hash_entry *) entry; | |
a06ea964 NC |
1942 | |
1943 | /* Allocate the structure if it has not already been allocated by a | |
1944 | subclass. */ | |
1945 | if (ret == NULL) | |
1946 | ret = bfd_hash_allocate (table, | |
cec5225b | 1947 | sizeof (struct elf_aarch64_link_hash_entry)); |
a06ea964 NC |
1948 | if (ret == NULL) |
1949 | return (struct bfd_hash_entry *) ret; | |
1950 | ||
1951 | /* Call the allocation method of the superclass. */ | |
cec5225b | 1952 | ret = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
1953 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
1954 | table, string)); | |
1955 | if (ret != NULL) | |
1956 | { | |
1957 | ret->dyn_relocs = NULL; | |
a06ea964 NC |
1958 | ret->got_type = GOT_UNKNOWN; |
1959 | ret->plt_got_offset = (bfd_vma) - 1; | |
1960 | ret->stub_cache = NULL; | |
1961 | ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
1962 | } | |
1963 | ||
1964 | return (struct bfd_hash_entry *) ret; | |
1965 | } | |
1966 | ||
1967 | /* Initialize an entry in the stub hash table. */ | |
1968 | ||
1969 | static struct bfd_hash_entry * | |
1970 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
1971 | struct bfd_hash_table *table, const char *string) | |
1972 | { | |
1973 | /* Allocate the structure if it has not already been allocated by a | |
1974 | subclass. */ | |
1975 | if (entry == NULL) | |
1976 | { | |
1977 | entry = bfd_hash_allocate (table, | |
1978 | sizeof (struct | |
cec5225b | 1979 | elf_aarch64_stub_hash_entry)); |
a06ea964 NC |
1980 | if (entry == NULL) |
1981 | return entry; | |
1982 | } | |
1983 | ||
1984 | /* Call the allocation method of the superclass. */ | |
1985 | entry = bfd_hash_newfunc (entry, table, string); | |
1986 | if (entry != NULL) | |
1987 | { | |
cec5225b | 1988 | struct elf_aarch64_stub_hash_entry *eh; |
a06ea964 NC |
1989 | |
1990 | /* Initialize the local fields. */ | |
cec5225b | 1991 | eh = (struct elf_aarch64_stub_hash_entry *) entry; |
4106101c | 1992 | eh->adrp_offset = 0; |
a06ea964 NC |
1993 | eh->stub_sec = NULL; |
1994 | eh->stub_offset = 0; | |
1995 | eh->target_value = 0; | |
1996 | eh->target_section = NULL; | |
1997 | eh->stub_type = aarch64_stub_none; | |
1998 | eh->h = NULL; | |
1999 | eh->id_sec = NULL; | |
2000 | } | |
2001 | ||
2002 | return entry; | |
2003 | } | |
2004 | ||
1419bbe5 WN |
2005 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry |
2006 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
2007 | as global symbol. We reuse indx and dynstr_index for local symbol | |
2008 | hash since they aren't used by global symbols in this backend. */ | |
2009 | ||
2010 | static hashval_t | |
2011 | elfNN_aarch64_local_htab_hash (const void *ptr) | |
2012 | { | |
2013 | struct elf_link_hash_entry *h | |
2014 | = (struct elf_link_hash_entry *) ptr; | |
2015 | return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); | |
2016 | } | |
2017 | ||
2018 | /* Compare local hash entries. */ | |
2019 | ||
2020 | static int | |
2021 | elfNN_aarch64_local_htab_eq (const void *ptr1, const void *ptr2) | |
2022 | { | |
2023 | struct elf_link_hash_entry *h1 | |
2024 | = (struct elf_link_hash_entry *) ptr1; | |
2025 | struct elf_link_hash_entry *h2 | |
2026 | = (struct elf_link_hash_entry *) ptr2; | |
2027 | ||
2028 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
2029 | } | |
2030 | ||
2031 | /* Find and/or create a hash entry for local symbol. */ | |
2032 | ||
2033 | static struct elf_link_hash_entry * | |
2034 | elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table *htab, | |
2035 | bfd *abfd, const Elf_Internal_Rela *rel, | |
2036 | bfd_boolean create) | |
2037 | { | |
2038 | struct elf_aarch64_link_hash_entry e, *ret; | |
2039 | asection *sec = abfd->sections; | |
2040 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, | |
2041 | ELFNN_R_SYM (rel->r_info)); | |
2042 | void **slot; | |
2043 | ||
2044 | e.root.indx = sec->id; | |
2045 | e.root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2046 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, | |
2047 | create ? INSERT : NO_INSERT); | |
2048 | ||
2049 | if (!slot) | |
2050 | return NULL; | |
2051 | ||
2052 | if (*slot) | |
2053 | { | |
2054 | ret = (struct elf_aarch64_link_hash_entry *) *slot; | |
2055 | return &ret->root; | |
2056 | } | |
2057 | ||
2058 | ret = (struct elf_aarch64_link_hash_entry *) | |
2059 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, | |
2060 | sizeof (struct elf_aarch64_link_hash_entry)); | |
2061 | if (ret) | |
2062 | { | |
2063 | memset (ret, 0, sizeof (*ret)); | |
2064 | ret->root.indx = sec->id; | |
2065 | ret->root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2066 | ret->root.dynindx = -1; | |
2067 | *slot = ret; | |
2068 | } | |
2069 | return &ret->root; | |
2070 | } | |
a06ea964 NC |
2071 | |
2072 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
2073 | ||
2074 | static void | |
cec5225b | 2075 | elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info, |
a06ea964 NC |
2076 | struct elf_link_hash_entry *dir, |
2077 | struct elf_link_hash_entry *ind) | |
2078 | { | |
cec5225b | 2079 | struct elf_aarch64_link_hash_entry *edir, *eind; |
a06ea964 | 2080 | |
cec5225b YZ |
2081 | edir = (struct elf_aarch64_link_hash_entry *) dir; |
2082 | eind = (struct elf_aarch64_link_hash_entry *) ind; | |
a06ea964 NC |
2083 | |
2084 | if (eind->dyn_relocs != NULL) | |
2085 | { | |
2086 | if (edir->dyn_relocs != NULL) | |
2087 | { | |
2088 | struct elf_dyn_relocs **pp; | |
2089 | struct elf_dyn_relocs *p; | |
2090 | ||
2091 | /* Add reloc counts against the indirect sym to the direct sym | |
2092 | list. Merge any entries against the same section. */ | |
2093 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) | |
2094 | { | |
2095 | struct elf_dyn_relocs *q; | |
2096 | ||
2097 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
2098 | if (q->sec == p->sec) | |
2099 | { | |
2100 | q->pc_count += p->pc_count; | |
2101 | q->count += p->count; | |
2102 | *pp = p->next; | |
2103 | break; | |
2104 | } | |
2105 | if (q == NULL) | |
2106 | pp = &p->next; | |
2107 | } | |
2108 | *pp = edir->dyn_relocs; | |
2109 | } | |
2110 | ||
2111 | edir->dyn_relocs = eind->dyn_relocs; | |
2112 | eind->dyn_relocs = NULL; | |
2113 | } | |
2114 | ||
a06ea964 NC |
2115 | if (ind->root.type == bfd_link_hash_indirect) |
2116 | { | |
2117 | /* Copy over PLT info. */ | |
2118 | if (dir->got.refcount <= 0) | |
2119 | { | |
2120 | edir->got_type = eind->got_type; | |
2121 | eind->got_type = GOT_UNKNOWN; | |
2122 | } | |
2123 | } | |
2124 | ||
2125 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
2126 | } | |
2127 | ||
68faa637 AM |
2128 | /* Destroy an AArch64 elf linker hash table. */ |
2129 | ||
2130 | static void | |
d495ab0d | 2131 | elfNN_aarch64_link_hash_table_free (bfd *obfd) |
68faa637 AM |
2132 | { |
2133 | struct elf_aarch64_link_hash_table *ret | |
d495ab0d | 2134 | = (struct elf_aarch64_link_hash_table *) obfd->link.hash; |
68faa637 AM |
2135 | |
2136 | if (ret->loc_hash_table) | |
2137 | htab_delete (ret->loc_hash_table); | |
2138 | if (ret->loc_hash_memory) | |
2139 | objalloc_free ((struct objalloc *) ret->loc_hash_memory); | |
2140 | ||
2141 | bfd_hash_table_free (&ret->stub_hash_table); | |
d495ab0d | 2142 | _bfd_elf_link_hash_table_free (obfd); |
68faa637 AM |
2143 | } |
2144 | ||
a06ea964 NC |
2145 | /* Create an AArch64 elf linker hash table. */ |
2146 | ||
2147 | static struct bfd_link_hash_table * | |
cec5225b | 2148 | elfNN_aarch64_link_hash_table_create (bfd *abfd) |
a06ea964 | 2149 | { |
cec5225b YZ |
2150 | struct elf_aarch64_link_hash_table *ret; |
2151 | bfd_size_type amt = sizeof (struct elf_aarch64_link_hash_table); | |
a06ea964 | 2152 | |
7bf52ea2 | 2153 | ret = bfd_zmalloc (amt); |
a06ea964 NC |
2154 | if (ret == NULL) |
2155 | return NULL; | |
2156 | ||
2157 | if (!_bfd_elf_link_hash_table_init | |
cec5225b YZ |
2158 | (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc, |
2159 | sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA)) | |
a06ea964 NC |
2160 | { |
2161 | free (ret); | |
2162 | return NULL; | |
2163 | } | |
2164 | ||
a06ea964 NC |
2165 | ret->plt_header_size = PLT_ENTRY_SIZE; |
2166 | ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE; | |
a06ea964 | 2167 | ret->obfd = abfd; |
a06ea964 NC |
2168 | ret->dt_tlsdesc_got = (bfd_vma) - 1; |
2169 | ||
2170 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc, | |
cec5225b | 2171 | sizeof (struct elf_aarch64_stub_hash_entry))) |
a06ea964 | 2172 | { |
d495ab0d | 2173 | _bfd_elf_link_hash_table_free (abfd); |
a06ea964 NC |
2174 | return NULL; |
2175 | } | |
2176 | ||
1419bbe5 WN |
2177 | ret->loc_hash_table = htab_try_create (1024, |
2178 | elfNN_aarch64_local_htab_hash, | |
2179 | elfNN_aarch64_local_htab_eq, | |
2180 | NULL); | |
2181 | ret->loc_hash_memory = objalloc_create (); | |
2182 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
2183 | { | |
d495ab0d | 2184 | elfNN_aarch64_link_hash_table_free (abfd); |
1419bbe5 WN |
2185 | return NULL; |
2186 | } | |
d495ab0d | 2187 | ret->root.root.hash_table_free = elfNN_aarch64_link_hash_table_free; |
1419bbe5 | 2188 | |
a06ea964 NC |
2189 | return &ret->root.root; |
2190 | } | |
2191 | ||
a06ea964 NC |
2192 | static bfd_boolean |
2193 | aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section, | |
2194 | bfd_vma offset, bfd_vma value) | |
2195 | { | |
2196 | reloc_howto_type *howto; | |
2197 | bfd_vma place; | |
2198 | ||
cec5225b | 2199 | howto = elfNN_aarch64_howto_from_type (r_type); |
a06ea964 NC |
2200 | place = (input_section->output_section->vma + input_section->output_offset |
2201 | + offset); | |
caed7120 YZ |
2202 | |
2203 | r_type = elfNN_aarch64_bfd_reloc_from_type (r_type); | |
2204 | value = _bfd_aarch64_elf_resolve_relocation (r_type, place, value, 0, FALSE); | |
2205 | return _bfd_aarch64_elf_put_addend (input_bfd, | |
2206 | input_section->contents + offset, r_type, | |
2207 | howto, value); | |
a06ea964 NC |
2208 | } |
2209 | ||
cec5225b | 2210 | static enum elf_aarch64_stub_type |
a06ea964 NC |
2211 | aarch64_select_branch_stub (bfd_vma value, bfd_vma place) |
2212 | { | |
2213 | if (aarch64_valid_for_adrp_p (value, place)) | |
2214 | return aarch64_stub_adrp_branch; | |
2215 | return aarch64_stub_long_branch; | |
2216 | } | |
2217 | ||
2218 | /* Determine the type of stub needed, if any, for a call. */ | |
2219 | ||
cec5225b | 2220 | static enum elf_aarch64_stub_type |
a06ea964 NC |
2221 | aarch64_type_of_stub (struct bfd_link_info *info, |
2222 | asection *input_sec, | |
2223 | const Elf_Internal_Rela *rel, | |
2224 | unsigned char st_type, | |
cec5225b | 2225 | struct elf_aarch64_link_hash_entry *hash, |
a06ea964 NC |
2226 | bfd_vma destination) |
2227 | { | |
2228 | bfd_vma location; | |
2229 | bfd_signed_vma branch_offset; | |
2230 | unsigned int r_type; | |
cec5225b YZ |
2231 | struct elf_aarch64_link_hash_table *globals; |
2232 | enum elf_aarch64_stub_type stub_type = aarch64_stub_none; | |
a06ea964 NC |
2233 | bfd_boolean via_plt_p; |
2234 | ||
2235 | if (st_type != STT_FUNC) | |
2236 | return stub_type; | |
2237 | ||
cec5225b | 2238 | globals = elf_aarch64_hash_table (info); |
a06ea964 NC |
2239 | via_plt_p = (globals->root.splt != NULL && hash != NULL |
2240 | && hash->root.plt.offset != (bfd_vma) - 1); | |
2241 | ||
2242 | if (via_plt_p) | |
2243 | return stub_type; | |
2244 | ||
2245 | /* Determine where the call point is. */ | |
2246 | location = (input_sec->output_offset | |
2247 | + input_sec->output_section->vma + rel->r_offset); | |
2248 | ||
2249 | branch_offset = (bfd_signed_vma) (destination - location); | |
2250 | ||
cec5225b | 2251 | r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
2252 | |
2253 | /* We don't want to redirect any old unconditional jump in this way, | |
2254 | only one which is being used for a sibcall, where it is | |
2255 | acceptable for the IP0 and IP1 registers to be clobbered. */ | |
a6bb11b2 | 2256 | if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26)) |
a06ea964 NC |
2257 | && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET |
2258 | || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET)) | |
2259 | { | |
2260 | stub_type = aarch64_stub_long_branch; | |
2261 | } | |
2262 | ||
2263 | return stub_type; | |
2264 | } | |
2265 | ||
2266 | /* Build a name for an entry in the stub hash table. */ | |
2267 | ||
2268 | static char * | |
cec5225b | 2269 | elfNN_aarch64_stub_name (const asection *input_section, |
a06ea964 | 2270 | const asection *sym_sec, |
cec5225b | 2271 | const struct elf_aarch64_link_hash_entry *hash, |
a06ea964 NC |
2272 | const Elf_Internal_Rela *rel) |
2273 | { | |
2274 | char *stub_name; | |
2275 | bfd_size_type len; | |
2276 | ||
2277 | if (hash) | |
2278 | { | |
2279 | len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1; | |
2280 | stub_name = bfd_malloc (len); | |
2281 | if (stub_name != NULL) | |
2282 | snprintf (stub_name, len, "%08x_%s+%" BFD_VMA_FMT "x", | |
2283 | (unsigned int) input_section->id, | |
2284 | hash->root.root.root.string, | |
2285 | rel->r_addend); | |
2286 | } | |
2287 | else | |
2288 | { | |
2289 | len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1; | |
2290 | stub_name = bfd_malloc (len); | |
2291 | if (stub_name != NULL) | |
2292 | snprintf (stub_name, len, "%08x_%x:%x+%" BFD_VMA_FMT "x", | |
2293 | (unsigned int) input_section->id, | |
2294 | (unsigned int) sym_sec->id, | |
cec5225b | 2295 | (unsigned int) ELFNN_R_SYM (rel->r_info), |
a06ea964 NC |
2296 | rel->r_addend); |
2297 | } | |
2298 | ||
2299 | return stub_name; | |
2300 | } | |
2301 | ||
2302 | /* Look up an entry in the stub hash. Stub entries are cached because | |
2303 | creating the stub name takes a bit of time. */ | |
2304 | ||
cec5225b YZ |
2305 | static struct elf_aarch64_stub_hash_entry * |
2306 | elfNN_aarch64_get_stub_entry (const asection *input_section, | |
a06ea964 NC |
2307 | const asection *sym_sec, |
2308 | struct elf_link_hash_entry *hash, | |
2309 | const Elf_Internal_Rela *rel, | |
cec5225b | 2310 | struct elf_aarch64_link_hash_table *htab) |
a06ea964 | 2311 | { |
cec5225b YZ |
2312 | struct elf_aarch64_stub_hash_entry *stub_entry; |
2313 | struct elf_aarch64_link_hash_entry *h = | |
2314 | (struct elf_aarch64_link_hash_entry *) hash; | |
a06ea964 NC |
2315 | const asection *id_sec; |
2316 | ||
2317 | if ((input_section->flags & SEC_CODE) == 0) | |
2318 | return NULL; | |
2319 | ||
2320 | /* If this input section is part of a group of sections sharing one | |
2321 | stub section, then use the id of the first section in the group. | |
2322 | Stub names need to include a section id, as there may well be | |
2323 | more than one stub used to reach say, printf, and we need to | |
2324 | distinguish between them. */ | |
2325 | id_sec = htab->stub_group[input_section->id].link_sec; | |
2326 | ||
2327 | if (h != NULL && h->stub_cache != NULL | |
2328 | && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec) | |
2329 | { | |
2330 | stub_entry = h->stub_cache; | |
2331 | } | |
2332 | else | |
2333 | { | |
2334 | char *stub_name; | |
2335 | ||
cec5225b | 2336 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel); |
a06ea964 NC |
2337 | if (stub_name == NULL) |
2338 | return NULL; | |
2339 | ||
2340 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
2341 | stub_name, FALSE, FALSE); | |
2342 | if (h != NULL) | |
2343 | h->stub_cache = stub_entry; | |
2344 | ||
2345 | free (stub_name); | |
2346 | } | |
2347 | ||
2348 | return stub_entry; | |
2349 | } | |
2350 | ||
a06ea964 | 2351 | |
66585675 MS |
2352 | /* Create a stub section. */ |
2353 | ||
2354 | static asection * | |
2355 | _bfd_aarch64_create_stub_section (asection *section, | |
2356 | struct elf_aarch64_link_hash_table *htab) | |
2357 | { | |
2358 | size_t namelen; | |
2359 | bfd_size_type len; | |
2360 | char *s_name; | |
2361 | ||
2362 | namelen = strlen (section->name); | |
2363 | len = namelen + sizeof (STUB_SUFFIX); | |
2364 | s_name = bfd_alloc (htab->stub_bfd, len); | |
2365 | if (s_name == NULL) | |
2366 | return NULL; | |
2367 | ||
2368 | memcpy (s_name, section->name, namelen); | |
2369 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
2370 | return (*htab->add_stub_section) (s_name, section); | |
2371 | } | |
2372 | ||
2373 | ||
fc6d53be MS |
2374 | /* Find or create a stub section for a link section. |
2375 | ||
2376 | Fix or create the stub section used to collect stubs attached to | |
2377 | the specified link section. */ | |
2378 | ||
2379 | static asection * | |
2380 | _bfd_aarch64_get_stub_for_link_section (asection *link_section, | |
2381 | struct elf_aarch64_link_hash_table *htab) | |
2382 | { | |
2383 | if (htab->stub_group[link_section->id].stub_sec == NULL) | |
2384 | htab->stub_group[link_section->id].stub_sec | |
2385 | = _bfd_aarch64_create_stub_section (link_section, htab); | |
2386 | return htab->stub_group[link_section->id].stub_sec; | |
2387 | } | |
2388 | ||
2389 | ||
ef857521 MS |
2390 | /* Find or create a stub section in the stub group for an input |
2391 | section. */ | |
2392 | ||
2393 | static asection * | |
2394 | _bfd_aarch64_create_or_find_stub_sec (asection *section, | |
2395 | struct elf_aarch64_link_hash_table *htab) | |
a06ea964 | 2396 | { |
fc6d53be MS |
2397 | asection *link_sec = htab->stub_group[section->id].link_sec; |
2398 | return _bfd_aarch64_get_stub_for_link_section (link_sec, htab); | |
ef857521 MS |
2399 | } |
2400 | ||
2401 | ||
2402 | /* Add a new stub entry in the stub group associated with an input | |
2403 | section to the stub hash. Not all fields of the new stub entry are | |
2404 | initialised. */ | |
2405 | ||
2406 | static struct elf_aarch64_stub_hash_entry * | |
2407 | _bfd_aarch64_add_stub_entry_in_group (const char *stub_name, | |
2408 | asection *section, | |
2409 | struct elf_aarch64_link_hash_table *htab) | |
2410 | { | |
2411 | asection *link_sec; | |
2412 | asection *stub_sec; | |
2413 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
2414 | ||
2415 | link_sec = htab->stub_group[section->id].link_sec; | |
2416 | stub_sec = _bfd_aarch64_create_or_find_stub_sec (section, htab); | |
2417 | ||
a06ea964 NC |
2418 | /* Enter this entry into the linker stub hash table. */ |
2419 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
2420 | TRUE, FALSE); | |
2421 | if (stub_entry == NULL) | |
2422 | { | |
2423 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), | |
2424 | section->owner, stub_name); | |
2425 | return NULL; | |
2426 | } | |
2427 | ||
2428 | stub_entry->stub_sec = stub_sec; | |
2429 | stub_entry->stub_offset = 0; | |
2430 | stub_entry->id_sec = link_sec; | |
2431 | ||
2432 | return stub_entry; | |
2433 | } | |
2434 | ||
4106101c MS |
2435 | /* Add a new stub entry in the final stub section to the stub hash. |
2436 | Not all fields of the new stub entry are initialised. */ | |
2437 | ||
2438 | static struct elf_aarch64_stub_hash_entry * | |
2439 | _bfd_aarch64_add_stub_entry_after (const char *stub_name, | |
2440 | asection *link_section, | |
2441 | struct elf_aarch64_link_hash_table *htab) | |
2442 | { | |
2443 | asection *stub_sec; | |
2444 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
2445 | ||
2446 | stub_sec = _bfd_aarch64_get_stub_for_link_section (link_section, htab); | |
2447 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
2448 | TRUE, FALSE); | |
2449 | if (stub_entry == NULL) | |
2450 | { | |
2451 | (*_bfd_error_handler) (_("cannot create stub entry %s"), stub_name); | |
2452 | return NULL; | |
2453 | } | |
2454 | ||
2455 | stub_entry->stub_sec = stub_sec; | |
2456 | stub_entry->stub_offset = 0; | |
2457 | stub_entry->id_sec = link_section; | |
2458 | ||
2459 | return stub_entry; | |
2460 | } | |
2461 | ||
2462 | ||
a06ea964 NC |
2463 | static bfd_boolean |
2464 | aarch64_build_one_stub (struct bfd_hash_entry *gen_entry, | |
2465 | void *in_arg ATTRIBUTE_UNUSED) | |
2466 | { | |
cec5225b | 2467 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
2468 | asection *stub_sec; |
2469 | bfd *stub_bfd; | |
2470 | bfd_byte *loc; | |
2471 | bfd_vma sym_value; | |
68fcca92 JW |
2472 | bfd_vma veneered_insn_loc; |
2473 | bfd_vma veneer_entry_loc; | |
2474 | bfd_signed_vma branch_offset = 0; | |
a06ea964 NC |
2475 | unsigned int template_size; |
2476 | const uint32_t *template; | |
2477 | unsigned int i; | |
2478 | ||
2479 | /* Massage our args to the form they really have. */ | |
cec5225b | 2480 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
2481 | |
2482 | stub_sec = stub_entry->stub_sec; | |
2483 | ||
2484 | /* Make a note of the offset within the stubs for this entry. */ | |
2485 | stub_entry->stub_offset = stub_sec->size; | |
2486 | loc = stub_sec->contents + stub_entry->stub_offset; | |
2487 | ||
2488 | stub_bfd = stub_sec->owner; | |
2489 | ||
2490 | /* This is the address of the stub destination. */ | |
2491 | sym_value = (stub_entry->target_value | |
2492 | + stub_entry->target_section->output_offset | |
2493 | + stub_entry->target_section->output_section->vma); | |
2494 | ||
2495 | if (stub_entry->stub_type == aarch64_stub_long_branch) | |
2496 | { | |
2497 | bfd_vma place = (stub_entry->stub_offset + stub_sec->output_section->vma | |
2498 | + stub_sec->output_offset); | |
2499 | ||
2500 | /* See if we can relax the stub. */ | |
2501 | if (aarch64_valid_for_adrp_p (sym_value, place)) | |
2502 | stub_entry->stub_type = aarch64_select_branch_stub (sym_value, place); | |
2503 | } | |
2504 | ||
2505 | switch (stub_entry->stub_type) | |
2506 | { | |
2507 | case aarch64_stub_adrp_branch: | |
2508 | template = aarch64_adrp_branch_stub; | |
2509 | template_size = sizeof (aarch64_adrp_branch_stub); | |
2510 | break; | |
2511 | case aarch64_stub_long_branch: | |
2512 | template = aarch64_long_branch_stub; | |
2513 | template_size = sizeof (aarch64_long_branch_stub); | |
2514 | break; | |
68fcca92 JW |
2515 | case aarch64_stub_erratum_835769_veneer: |
2516 | template = aarch64_erratum_835769_stub; | |
2517 | template_size = sizeof (aarch64_erratum_835769_stub); | |
2518 | break; | |
4106101c MS |
2519 | case aarch64_stub_erratum_843419_veneer: |
2520 | template = aarch64_erratum_843419_stub; | |
2521 | template_size = sizeof (aarch64_erratum_843419_stub); | |
2522 | break; | |
a06ea964 | 2523 | default: |
8e2fe09f | 2524 | abort (); |
a06ea964 NC |
2525 | } |
2526 | ||
2527 | for (i = 0; i < (template_size / sizeof template[0]); i++) | |
2528 | { | |
2529 | bfd_putl32 (template[i], loc); | |
2530 | loc += 4; | |
2531 | } | |
2532 | ||
2533 | template_size = (template_size + 7) & ~7; | |
2534 | stub_sec->size += template_size; | |
2535 | ||
2536 | switch (stub_entry->stub_type) | |
2537 | { | |
2538 | case aarch64_stub_adrp_branch: | |
a6bb11b2 | 2539 | if (aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21), stub_bfd, stub_sec, |
a06ea964 NC |
2540 | stub_entry->stub_offset, sym_value)) |
2541 | /* The stub would not have been relaxed if the offset was out | |
2542 | of range. */ | |
2543 | BFD_FAIL (); | |
2544 | ||
93ca8569 TB |
2545 | if (aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC), stub_bfd, stub_sec, |
2546 | stub_entry->stub_offset + 4, sym_value)) | |
2547 | BFD_FAIL (); | |
a06ea964 NC |
2548 | break; |
2549 | ||
2550 | case aarch64_stub_long_branch: | |
2551 | /* We want the value relative to the address 12 bytes back from the | |
2552 | value itself. */ | |
93ca8569 TB |
2553 | if (aarch64_relocate (AARCH64_R (PRELNN), stub_bfd, stub_sec, |
2554 | stub_entry->stub_offset + 16, sym_value + 12)) | |
2555 | BFD_FAIL (); | |
a06ea964 | 2556 | break; |
68fcca92 JW |
2557 | |
2558 | case aarch64_stub_erratum_835769_veneer: | |
2559 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
2560 | + stub_entry->target_section->output_offset | |
2561 | + stub_entry->target_value; | |
2562 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
2563 | + stub_entry->stub_sec->output_offset | |
2564 | + stub_entry->stub_offset; | |
2565 | branch_offset = veneered_insn_loc - veneer_entry_loc; | |
2566 | branch_offset >>= 2; | |
2567 | branch_offset &= 0x3ffffff; | |
2568 | bfd_putl32 (stub_entry->veneered_insn, | |
2569 | stub_sec->contents + stub_entry->stub_offset); | |
2570 | bfd_putl32 (template[1] | branch_offset, | |
2571 | stub_sec->contents + stub_entry->stub_offset + 4); | |
2572 | break; | |
2573 | ||
4106101c MS |
2574 | case aarch64_stub_erratum_843419_veneer: |
2575 | if (aarch64_relocate (AARCH64_R (JUMP26), stub_bfd, stub_sec, | |
2576 | stub_entry->stub_offset + 4, sym_value + 4)) | |
2577 | BFD_FAIL (); | |
2578 | break; | |
2579 | ||
a06ea964 | 2580 | default: |
8e2fe09f | 2581 | abort (); |
a06ea964 NC |
2582 | } |
2583 | ||
2584 | return TRUE; | |
2585 | } | |
2586 | ||
2587 | /* As above, but don't actually build the stub. Just bump offset so | |
2588 | we know stub section sizes. */ | |
2589 | ||
2590 | static bfd_boolean | |
2591 | aarch64_size_one_stub (struct bfd_hash_entry *gen_entry, | |
2592 | void *in_arg ATTRIBUTE_UNUSED) | |
2593 | { | |
cec5225b | 2594 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
2595 | int size; |
2596 | ||
2597 | /* Massage our args to the form they really have. */ | |
cec5225b | 2598 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
2599 | |
2600 | switch (stub_entry->stub_type) | |
2601 | { | |
2602 | case aarch64_stub_adrp_branch: | |
2603 | size = sizeof (aarch64_adrp_branch_stub); | |
2604 | break; | |
2605 | case aarch64_stub_long_branch: | |
2606 | size = sizeof (aarch64_long_branch_stub); | |
2607 | break; | |
68fcca92 JW |
2608 | case aarch64_stub_erratum_835769_veneer: |
2609 | size = sizeof (aarch64_erratum_835769_stub); | |
2610 | break; | |
4106101c MS |
2611 | case aarch64_stub_erratum_843419_veneer: |
2612 | size = sizeof (aarch64_erratum_843419_stub); | |
2613 | break; | |
a06ea964 | 2614 | default: |
8e2fe09f | 2615 | abort (); |
a06ea964 NC |
2616 | } |
2617 | ||
2618 | size = (size + 7) & ~7; | |
2619 | stub_entry->stub_sec->size += size; | |
2620 | return TRUE; | |
2621 | } | |
2622 | ||
2623 | /* External entry points for sizing and building linker stubs. */ | |
2624 | ||
2625 | /* Set up various things so that we can make a list of input sections | |
2626 | for each output section included in the link. Returns -1 on error, | |
2627 | 0 when no stubs will be needed, and 1 on success. */ | |
2628 | ||
2629 | int | |
cec5225b | 2630 | elfNN_aarch64_setup_section_lists (bfd *output_bfd, |
a06ea964 NC |
2631 | struct bfd_link_info *info) |
2632 | { | |
2633 | bfd *input_bfd; | |
2634 | unsigned int bfd_count; | |
2635 | int top_id, top_index; | |
2636 | asection *section; | |
2637 | asection **input_list, **list; | |
2638 | bfd_size_type amt; | |
cec5225b YZ |
2639 | struct elf_aarch64_link_hash_table *htab = |
2640 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
2641 | |
2642 | if (!is_elf_hash_table (htab)) | |
2643 | return 0; | |
2644 | ||
2645 | /* Count the number of input BFDs and find the top input section id. */ | |
2646 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
c72f2fb2 | 2647 | input_bfd != NULL; input_bfd = input_bfd->link.next) |
a06ea964 NC |
2648 | { |
2649 | bfd_count += 1; | |
2650 | for (section = input_bfd->sections; | |
2651 | section != NULL; section = section->next) | |
2652 | { | |
2653 | if (top_id < section->id) | |
2654 | top_id = section->id; | |
2655 | } | |
2656 | } | |
2657 | htab->bfd_count = bfd_count; | |
2658 | ||
2659 | amt = sizeof (struct map_stub) * (top_id + 1); | |
2660 | htab->stub_group = bfd_zmalloc (amt); | |
2661 | if (htab->stub_group == NULL) | |
2662 | return -1; | |
2663 | ||
2664 | /* We can't use output_bfd->section_count here to find the top output | |
2665 | section index as some sections may have been removed, and | |
2666 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
2667 | for (section = output_bfd->sections, top_index = 0; | |
2668 | section != NULL; section = section->next) | |
2669 | { | |
2670 | if (top_index < section->index) | |
2671 | top_index = section->index; | |
2672 | } | |
2673 | ||
2674 | htab->top_index = top_index; | |
2675 | amt = sizeof (asection *) * (top_index + 1); | |
2676 | input_list = bfd_malloc (amt); | |
2677 | htab->input_list = input_list; | |
2678 | if (input_list == NULL) | |
2679 | return -1; | |
2680 | ||
2681 | /* For sections we aren't interested in, mark their entries with a | |
2682 | value we can check later. */ | |
2683 | list = input_list + top_index; | |
2684 | do | |
2685 | *list = bfd_abs_section_ptr; | |
2686 | while (list-- != input_list); | |
2687 | ||
2688 | for (section = output_bfd->sections; | |
2689 | section != NULL; section = section->next) | |
2690 | { | |
2691 | if ((section->flags & SEC_CODE) != 0) | |
2692 | input_list[section->index] = NULL; | |
2693 | } | |
2694 | ||
2695 | return 1; | |
2696 | } | |
2697 | ||
cec5225b | 2698 | /* Used by elfNN_aarch64_next_input_section and group_sections. */ |
a06ea964 NC |
2699 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
2700 | ||
2701 | /* The linker repeatedly calls this function for each input section, | |
2702 | in the order that input sections are linked into output sections. | |
2703 | Build lists of input sections to determine groupings between which | |
2704 | we may insert linker stubs. */ | |
2705 | ||
2706 | void | |
cec5225b | 2707 | elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec) |
a06ea964 | 2708 | { |
cec5225b YZ |
2709 | struct elf_aarch64_link_hash_table *htab = |
2710 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
2711 | |
2712 | if (isec->output_section->index <= htab->top_index) | |
2713 | { | |
2714 | asection **list = htab->input_list + isec->output_section->index; | |
2715 | ||
2716 | if (*list != bfd_abs_section_ptr) | |
2717 | { | |
2718 | /* Steal the link_sec pointer for our list. */ | |
2719 | /* This happens to make the list in reverse order, | |
2720 | which is what we want. */ | |
2721 | PREV_SEC (isec) = *list; | |
2722 | *list = isec; | |
2723 | } | |
2724 | } | |
2725 | } | |
2726 | ||
2727 | /* See whether we can group stub sections together. Grouping stub | |
2728 | sections may result in fewer stubs. More importantly, we need to | |
2729 | put all .init* and .fini* stubs at the beginning of the .init or | |
2730 | .fini output sections respectively, because glibc splits the | |
2731 | _init and _fini functions into multiple parts. Putting a stub in | |
2732 | the middle of a function is not a good idea. */ | |
2733 | ||
2734 | static void | |
cec5225b | 2735 | group_sections (struct elf_aarch64_link_hash_table *htab, |
a06ea964 NC |
2736 | bfd_size_type stub_group_size, |
2737 | bfd_boolean stubs_always_before_branch) | |
2738 | { | |
2739 | asection **list = htab->input_list + htab->top_index; | |
2740 | ||
2741 | do | |
2742 | { | |
2743 | asection *tail = *list; | |
2744 | ||
2745 | if (tail == bfd_abs_section_ptr) | |
2746 | continue; | |
2747 | ||
2748 | while (tail != NULL) | |
2749 | { | |
2750 | asection *curr; | |
2751 | asection *prev; | |
2752 | bfd_size_type total; | |
2753 | ||
2754 | curr = tail; | |
2755 | total = tail->size; | |
2756 | while ((prev = PREV_SEC (curr)) != NULL | |
2757 | && ((total += curr->output_offset - prev->output_offset) | |
2758 | < stub_group_size)) | |
2759 | curr = prev; | |
2760 | ||
2761 | /* OK, the size from the start of CURR to the end is less | |
2762 | than stub_group_size and thus can be handled by one stub | |
2763 | section. (Or the tail section is itself larger than | |
2764 | stub_group_size, in which case we may be toast.) | |
2765 | We should really be keeping track of the total size of | |
2766 | stubs added here, as stubs contribute to the final output | |
2767 | section size. */ | |
2768 | do | |
2769 | { | |
2770 | prev = PREV_SEC (tail); | |
2771 | /* Set up this stub group. */ | |
2772 | htab->stub_group[tail->id].link_sec = curr; | |
2773 | } | |
2774 | while (tail != curr && (tail = prev) != NULL); | |
2775 | ||
2776 | /* But wait, there's more! Input sections up to stub_group_size | |
2777 | bytes before the stub section can be handled by it too. */ | |
2778 | if (!stubs_always_before_branch) | |
2779 | { | |
2780 | total = 0; | |
2781 | while (prev != NULL | |
2782 | && ((total += tail->output_offset - prev->output_offset) | |
2783 | < stub_group_size)) | |
2784 | { | |
2785 | tail = prev; | |
2786 | prev = PREV_SEC (tail); | |
2787 | htab->stub_group[tail->id].link_sec = curr; | |
2788 | } | |
2789 | } | |
2790 | tail = prev; | |
2791 | } | |
2792 | } | |
2793 | while (list-- != htab->input_list); | |
2794 | ||
2795 | free (htab->input_list); | |
2796 | } | |
2797 | ||
2798 | #undef PREV_SEC | |
2799 | ||
68fcca92 JW |
2800 | #define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1)) |
2801 | ||
2802 | #define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5) | |
2803 | #define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5) | |
2804 | #define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5) | |
2805 | #define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5) | |
2806 | #define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5) | |
2807 | #define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5) | |
2808 | ||
2809 | #define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000) | |
2810 | #define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1) | |
2811 | #define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3) | |
2812 | #define AARCH64_ZR 0x1f | |
2813 | ||
2814 | /* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for | |
2815 | LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */ | |
2816 | ||
2817 | #define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1) | |
2818 | #define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000) | |
2819 | #define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000) | |
2820 | #define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000) | |
2821 | #define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000) | |
2822 | #define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000) | |
2823 | #define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000) | |
2824 | #define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000) | |
2825 | #define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000) | |
2826 | #define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400) | |
2827 | #define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800) | |
2828 | #define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00) | |
2829 | #define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800) | |
2830 | #define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000) | |
2831 | #define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000) | |
2832 | #define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000) | |
2833 | #define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000) | |
2834 | #define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000) | |
2835 | ||
3d14faea MS |
2836 | /* Classify an INSN if it is indeed a load/store. |
2837 | ||
2838 | Return TRUE if INSN is a LD/ST instruction otherwise return FALSE. | |
2839 | ||
2840 | For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2 | |
2841 | is set equal to RT. | |
2842 | ||
2843 | For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. | |
2844 | ||
2845 | */ | |
68fcca92 JW |
2846 | |
2847 | static bfd_boolean | |
3d14faea | 2848 | aarch64_mem_op_p (uint32_t insn, unsigned int *rt, unsigned int *rt2, |
68fcca92 JW |
2849 | bfd_boolean *pair, bfd_boolean *load) |
2850 | { | |
2851 | uint32_t opcode; | |
2852 | unsigned int r; | |
2853 | uint32_t opc = 0; | |
2854 | uint32_t v = 0; | |
2855 | uint32_t opc_v = 0; | |
2856 | ||
2857 | /* Bail out quickly if INSN doesn't fall into the the load-store | |
2858 | encoding space. */ | |
2859 | if (!AARCH64_LDST (insn)) | |
2860 | return FALSE; | |
2861 | ||
2862 | *pair = FALSE; | |
2863 | *load = FALSE; | |
2864 | if (AARCH64_LDST_EX (insn)) | |
2865 | { | |
2866 | *rt = AARCH64_RT (insn); | |
3d14faea | 2867 | *rt2 = *rt; |
68fcca92 JW |
2868 | if (AARCH64_BIT (insn, 21) == 1) |
2869 | { | |
2870 | *pair = TRUE; | |
3d14faea | 2871 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
2872 | } |
2873 | *load = AARCH64_LD (insn); | |
2874 | return TRUE; | |
2875 | } | |
2876 | else if (AARCH64_LDST_NAP (insn) | |
2877 | || AARCH64_LDSTP_PI (insn) | |
2878 | || AARCH64_LDSTP_O (insn) | |
2879 | || AARCH64_LDSTP_PRE (insn)) | |
2880 | { | |
2881 | *pair = TRUE; | |
2882 | *rt = AARCH64_RT (insn); | |
3d14faea | 2883 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
2884 | *load = AARCH64_LD (insn); |
2885 | return TRUE; | |
2886 | } | |
2887 | else if (AARCH64_LDST_PCREL (insn) | |
2888 | || AARCH64_LDST_UI (insn) | |
2889 | || AARCH64_LDST_PIIMM (insn) | |
2890 | || AARCH64_LDST_U (insn) | |
2891 | || AARCH64_LDST_PREIMM (insn) | |
2892 | || AARCH64_LDST_RO (insn) | |
2893 | || AARCH64_LDST_UIMM (insn)) | |
2894 | { | |
2895 | *rt = AARCH64_RT (insn); | |
3d14faea | 2896 | *rt2 = *rt; |
68fcca92 JW |
2897 | if (AARCH64_LDST_PCREL (insn)) |
2898 | *load = TRUE; | |
2899 | opc = AARCH64_BITS (insn, 22, 2); | |
2900 | v = AARCH64_BIT (insn, 26); | |
2901 | opc_v = opc | (v << 2); | |
2902 | *load = (opc_v == 1 || opc_v == 2 || opc_v == 3 | |
2903 | || opc_v == 5 || opc_v == 7); | |
2904 | return TRUE; | |
2905 | } | |
2906 | else if (AARCH64_LDST_SIMD_M (insn) | |
2907 | || AARCH64_LDST_SIMD_M_PI (insn)) | |
2908 | { | |
2909 | *rt = AARCH64_RT (insn); | |
2910 | *load = AARCH64_BIT (insn, 22); | |
2911 | opcode = (insn >> 12) & 0xf; | |
2912 | switch (opcode) | |
2913 | { | |
2914 | case 0: | |
2915 | case 2: | |
3d14faea | 2916 | *rt2 = *rt + 3; |
68fcca92 JW |
2917 | break; |
2918 | ||
2919 | case 4: | |
2920 | case 6: | |
3d14faea | 2921 | *rt2 = *rt + 2; |
68fcca92 JW |
2922 | break; |
2923 | ||
2924 | case 7: | |
3d14faea | 2925 | *rt2 = *rt; |
68fcca92 JW |
2926 | break; |
2927 | ||
2928 | case 8: | |
2929 | case 10: | |
3d14faea | 2930 | *rt2 = *rt + 1; |
68fcca92 JW |
2931 | break; |
2932 | ||
2933 | default: | |
2934 | return FALSE; | |
2935 | } | |
2936 | return TRUE; | |
2937 | } | |
2938 | else if (AARCH64_LDST_SIMD_S (insn) | |
2939 | || AARCH64_LDST_SIMD_S_PI (insn)) | |
2940 | { | |
2941 | *rt = AARCH64_RT (insn); | |
2942 | r = (insn >> 21) & 1; | |
2943 | *load = AARCH64_BIT (insn, 22); | |
2944 | opcode = (insn >> 13) & 0x7; | |
2945 | switch (opcode) | |
2946 | { | |
2947 | case 0: | |
2948 | case 2: | |
2949 | case 4: | |
3d14faea | 2950 | *rt2 = *rt + r; |
68fcca92 JW |
2951 | break; |
2952 | ||
2953 | case 1: | |
2954 | case 3: | |
2955 | case 5: | |
3d14faea | 2956 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
2957 | break; |
2958 | ||
2959 | case 6: | |
3d14faea | 2960 | *rt2 = *rt + r; |
68fcca92 JW |
2961 | break; |
2962 | ||
2963 | case 7: | |
3d14faea | 2964 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
2965 | break; |
2966 | ||
2967 | default: | |
2968 | return FALSE; | |
2969 | } | |
2970 | return TRUE; | |
2971 | } | |
2972 | ||
2973 | return FALSE; | |
2974 | } | |
2975 | ||
2976 | /* Return TRUE if INSN is multiply-accumulate. */ | |
2977 | ||
2978 | static bfd_boolean | |
2979 | aarch64_mlxl_p (uint32_t insn) | |
2980 | { | |
2981 | uint32_t op31 = AARCH64_OP31 (insn); | |
2982 | ||
2983 | if (AARCH64_MAC (insn) | |
2984 | && (op31 == 0 || op31 == 1 || op31 == 5) | |
2985 | /* Exclude MUL instructions which are encoded as a multiple accumulate | |
2986 | with RA = XZR. */ | |
2987 | && AARCH64_RA (insn) != AARCH64_ZR) | |
2988 | return TRUE; | |
2989 | ||
2990 | return FALSE; | |
2991 | } | |
2992 | ||
2993 | /* Some early revisions of the Cortex-A53 have an erratum (835769) whereby | |
2994 | it is possible for a 64-bit multiply-accumulate instruction to generate an | |
2995 | incorrect result. The details are quite complex and hard to | |
2996 | determine statically, since branches in the code may exist in some | |
2997 | circumstances, but all cases end with a memory (load, store, or | |
2998 | prefetch) instruction followed immediately by the multiply-accumulate | |
2999 | operation. We employ a linker patching technique, by moving the potentially | |
3000 | affected multiply-accumulate instruction into a patch region and replacing | |
3001 | the original instruction with a branch to the patch. This function checks | |
3002 | if INSN_1 is the memory operation followed by a multiply-accumulate | |
3003 | operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE | |
3004 | if INSN_1 and INSN_2 are safe. */ | |
3005 | ||
3006 | static bfd_boolean | |
3007 | aarch64_erratum_sequence (uint32_t insn_1, uint32_t insn_2) | |
3008 | { | |
3009 | uint32_t rt; | |
3d14faea | 3010 | uint32_t rt2; |
68fcca92 JW |
3011 | uint32_t rn; |
3012 | uint32_t rm; | |
3013 | uint32_t ra; | |
3014 | bfd_boolean pair; | |
3015 | bfd_boolean load; | |
3016 | ||
3017 | if (aarch64_mlxl_p (insn_2) | |
3d14faea | 3018 | && aarch64_mem_op_p (insn_1, &rt, &rt2, &pair, &load)) |
68fcca92 JW |
3019 | { |
3020 | /* Any SIMD memory op is independent of the subsequent MLA | |
3021 | by definition of the erratum. */ | |
3022 | if (AARCH64_BIT (insn_1, 26)) | |
3023 | return TRUE; | |
3024 | ||
3025 | /* If not SIMD, check for integer memory ops and MLA relationship. */ | |
3026 | rn = AARCH64_RN (insn_2); | |
3027 | ra = AARCH64_RA (insn_2); | |
3028 | rm = AARCH64_RM (insn_2); | |
3029 | ||
3030 | /* If this is a load and there's a true(RAW) dependency, we are safe | |
3031 | and this is not an erratum sequence. */ | |
3032 | if (load && | |
3033 | (rt == rn || rt == rm || rt == ra | |
3d14faea | 3034 | || (pair && (rt2 == rn || rt2 == rm || rt2 == ra)))) |
68fcca92 JW |
3035 | return FALSE; |
3036 | ||
3037 | /* We conservatively put out stubs for all other cases (including | |
3038 | writebacks). */ | |
3039 | return TRUE; | |
3040 | } | |
3041 | ||
3042 | return FALSE; | |
3043 | } | |
3044 | ||
520c7b56 JW |
3045 | /* Used to order a list of mapping symbols by address. */ |
3046 | ||
3047 | static int | |
3048 | elf_aarch64_compare_mapping (const void *a, const void *b) | |
3049 | { | |
3050 | const elf_aarch64_section_map *amap = (const elf_aarch64_section_map *) a; | |
3051 | const elf_aarch64_section_map *bmap = (const elf_aarch64_section_map *) b; | |
3052 | ||
3053 | if (amap->vma > bmap->vma) | |
3054 | return 1; | |
3055 | else if (amap->vma < bmap->vma) | |
3056 | return -1; | |
3057 | else if (amap->type > bmap->type) | |
3058 | /* Ensure results do not depend on the host qsort for objects with | |
3059 | multiple mapping symbols at the same address by sorting on type | |
3060 | after vma. */ | |
3061 | return 1; | |
3062 | else if (amap->type < bmap->type) | |
3063 | return -1; | |
3064 | else | |
3065 | return 0; | |
3066 | } | |
3067 | ||
2144188d | 3068 | |
35fee8b7 MS |
3069 | static char * |
3070 | _bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes) | |
3071 | { | |
3072 | char *stub_name = (char *) bfd_malloc | |
3073 | (strlen ("__erratum_835769_veneer_") + 16); | |
3074 | sprintf (stub_name,"__erratum_835769_veneer_%d", num_fixes); | |
3075 | return stub_name; | |
3076 | } | |
3077 | ||
4106101c | 3078 | /* Scan for Cortex-A53 erratum 835769 sequence. |
2144188d MS |
3079 | |
3080 | Return TRUE else FALSE on abnormal termination. */ | |
3081 | ||
68fcca92 | 3082 | static bfd_boolean |
5421cc6e MS |
3083 | _bfd_aarch64_erratum_835769_scan (bfd *input_bfd, |
3084 | struct bfd_link_info *info, | |
3085 | unsigned int *num_fixes_p) | |
68fcca92 JW |
3086 | { |
3087 | asection *section; | |
3088 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
68fcca92 | 3089 | unsigned int num_fixes = *num_fixes_p; |
68fcca92 JW |
3090 | |
3091 | if (htab == NULL) | |
2144188d | 3092 | return TRUE; |
68fcca92 JW |
3093 | |
3094 | for (section = input_bfd->sections; | |
3095 | section != NULL; | |
3096 | section = section->next) | |
3097 | { | |
3098 | bfd_byte *contents = NULL; | |
3099 | struct _aarch64_elf_section_data *sec_data; | |
3100 | unsigned int span; | |
3101 | ||
3102 | if (elf_section_type (section) != SHT_PROGBITS | |
3103 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
3104 | || (section->flags & SEC_EXCLUDE) != 0 | |
3105 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
3106 | || (section->output_section == bfd_abs_section_ptr)) | |
3107 | continue; | |
3108 | ||
3109 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
3110 | contents = elf_section_data (section)->this_hdr.contents; | |
3111 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
2144188d | 3112 | return FALSE; |
68fcca92 JW |
3113 | |
3114 | sec_data = elf_aarch64_section_data (section); | |
520c7b56 JW |
3115 | |
3116 | qsort (sec_data->map, sec_data->mapcount, | |
3117 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
3118 | ||
68fcca92 JW |
3119 | for (span = 0; span < sec_data->mapcount; span++) |
3120 | { | |
3121 | unsigned int span_start = sec_data->map[span].vma; | |
3122 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
3123 | ? sec_data->map[0].vma + section->size | |
3124 | : sec_data->map[span + 1].vma); | |
3125 | unsigned int i; | |
3126 | char span_type = sec_data->map[span].type; | |
3127 | ||
3128 | if (span_type == 'd') | |
3129 | continue; | |
3130 | ||
3131 | for (i = span_start; i + 4 < span_end; i += 4) | |
3132 | { | |
3133 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
3134 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
3135 | ||
3136 | if (aarch64_erratum_sequence (insn_1, insn_2)) | |
3137 | { | |
5421cc6e | 3138 | struct elf_aarch64_stub_hash_entry *stub_entry; |
35fee8b7 MS |
3139 | char *stub_name = _bfd_aarch64_erratum_835769_stub_name (num_fixes); |
3140 | if (! stub_name) | |
2144188d | 3141 | return FALSE; |
68fcca92 | 3142 | |
5421cc6e MS |
3143 | stub_entry = _bfd_aarch64_add_stub_entry_in_group (stub_name, |
3144 | section, | |
3145 | htab); | |
3146 | if (! stub_entry) | |
3147 | return FALSE; | |
68fcca92 | 3148 | |
5421cc6e MS |
3149 | stub_entry->stub_type = aarch64_stub_erratum_835769_veneer; |
3150 | stub_entry->target_section = section; | |
3151 | stub_entry->target_value = i + 4; | |
3152 | stub_entry->veneered_insn = insn_2; | |
3153 | stub_entry->output_name = stub_name; | |
68fcca92 JW |
3154 | num_fixes++; |
3155 | } | |
3156 | } | |
3157 | } | |
3158 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
3159 | free (contents); | |
3160 | } | |
3161 | ||
357d1523 MS |
3162 | *num_fixes_p = num_fixes; |
3163 | ||
2144188d | 3164 | return TRUE; |
68fcca92 JW |
3165 | } |
3166 | ||
13f622ec | 3167 | |
4106101c MS |
3168 | /* Test if instruction INSN is ADRP. */ |
3169 | ||
3170 | static bfd_boolean | |
3171 | _bfd_aarch64_adrp_p (uint32_t insn) | |
3172 | { | |
3173 | return ((insn & 0x9f000000) == 0x90000000); | |
3174 | } | |
3175 | ||
3176 | ||
3177 | /* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */ | |
3178 | ||
3179 | static bfd_boolean | |
3180 | _bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1, uint32_t insn_2, | |
3181 | uint32_t insn_3) | |
3182 | { | |
3183 | uint32_t rt; | |
3184 | uint32_t rt2; | |
3185 | bfd_boolean pair; | |
3186 | bfd_boolean load; | |
3187 | ||
3188 | return (aarch64_mem_op_p (insn_2, &rt, &rt2, &pair, &load) | |
3189 | && (!pair | |
3190 | || (pair && !load)) | |
3191 | && AARCH64_LDST_UIMM (insn_3) | |
3192 | && AARCH64_RN (insn_3) == AARCH64_RD (insn_1)); | |
3193 | } | |
3194 | ||
3195 | ||
3196 | /* Test for the presence of Cortex-A53 erratum 843419 instruction sequence. | |
3197 | ||
3198 | Return TRUE if section CONTENTS at offset I contains one of the | |
3199 | erratum 843419 sequences, otherwise return FALSE. If a sequence is | |
3200 | seen set P_VENEER_I to the offset of the final LOAD/STORE | |
3201 | instruction in the sequence. | |
3202 | */ | |
3203 | ||
3204 | static bfd_boolean | |
3205 | _bfd_aarch64_erratum_843419_p (bfd_byte *contents, bfd_vma vma, | |
3206 | bfd_vma i, bfd_vma span_end, | |
3207 | bfd_vma *p_veneer_i) | |
3208 | { | |
3209 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
3210 | ||
3211 | if (!_bfd_aarch64_adrp_p (insn_1)) | |
3212 | return FALSE; | |
3213 | ||
3214 | if (span_end < i + 12) | |
3215 | return FALSE; | |
3216 | ||
3217 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
3218 | uint32_t insn_3 = bfd_getl32 (contents + i + 8); | |
3219 | ||
3220 | if ((vma & 0xfff) != 0xff8 && (vma & 0xfff) != 0xffc) | |
3221 | return FALSE; | |
3222 | ||
3223 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_3)) | |
3224 | { | |
3225 | *p_veneer_i = i + 8; | |
3226 | return TRUE; | |
3227 | } | |
3228 | ||
3229 | if (span_end < i + 16) | |
3230 | return FALSE; | |
3231 | ||
3232 | uint32_t insn_4 = bfd_getl32 (contents + i + 12); | |
3233 | ||
3234 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_4)) | |
3235 | { | |
3236 | *p_veneer_i = i + 12; | |
3237 | return TRUE; | |
3238 | } | |
3239 | ||
3240 | return FALSE; | |
3241 | } | |
3242 | ||
3243 | ||
13f622ec MS |
3244 | /* Resize all stub sections. */ |
3245 | ||
3246 | static void | |
3247 | _bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table *htab) | |
3248 | { | |
3249 | asection *section; | |
3250 | ||
3251 | /* OK, we've added some stubs. Find out the new size of the | |
3252 | stub sections. */ | |
3253 | for (section = htab->stub_bfd->sections; | |
3254 | section != NULL; section = section->next) | |
3255 | { | |
3256 | /* Ignore non-stub sections. */ | |
3257 | if (!strstr (section->name, STUB_SUFFIX)) | |
3258 | continue; | |
3259 | section->size = 0; | |
3260 | } | |
3261 | ||
3262 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab); | |
13f622ec | 3263 | |
61865519 MS |
3264 | for (section = htab->stub_bfd->sections; |
3265 | section != NULL; section = section->next) | |
3266 | { | |
3267 | if (!strstr (section->name, STUB_SUFFIX)) | |
3268 | continue; | |
3269 | ||
3270 | if (section->size) | |
3271 | section->size += 4; | |
4106101c MS |
3272 | |
3273 | /* Ensure all stub sections have a size which is a multiple of | |
3274 | 4096. This is important in order to ensure that the insertion | |
3275 | of stub sections does not in itself move existing code around | |
3276 | in such a way that new errata sequences are created. */ | |
3277 | if (htab->fix_erratum_843419) | |
3278 | if (section->size) | |
3279 | section->size = BFD_ALIGN (section->size, 0x1000); | |
3280 | } | |
3281 | } | |
3282 | ||
3283 | ||
3284 | /* Construct an erratum 843419 workaround stub name. | |
3285 | */ | |
3286 | ||
3287 | static char * | |
3288 | _bfd_aarch64_erratum_843419_stub_name (asection *input_section, | |
3289 | bfd_vma offset) | |
3290 | { | |
3291 | const bfd_size_type len = 8 + 4 + 1 + 8 + 1 + 16 + 1; | |
3292 | char *stub_name = bfd_malloc (len); | |
3293 | ||
3294 | if (stub_name != NULL) | |
3295 | snprintf (stub_name, len, "e843419@%04x_%08x_%" BFD_VMA_FMT "x", | |
3296 | input_section->owner->id, | |
3297 | input_section->id, | |
3298 | offset); | |
3299 | return stub_name; | |
3300 | } | |
3301 | ||
3302 | /* Build a stub_entry structure describing an 843419 fixup. | |
3303 | ||
3304 | The stub_entry constructed is populated with the bit pattern INSN | |
3305 | of the instruction located at OFFSET within input SECTION. | |
3306 | ||
3307 | Returns TRUE on success. */ | |
3308 | ||
3309 | static bfd_boolean | |
3310 | _bfd_aarch64_erratum_843419_fixup (uint32_t insn, | |
3311 | bfd_vma adrp_offset, | |
3312 | bfd_vma ldst_offset, | |
3313 | asection *section, | |
3314 | struct bfd_link_info *info) | |
3315 | { | |
3316 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
3317 | char *stub_name; | |
3318 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
3319 | ||
3320 | stub_name = _bfd_aarch64_erratum_843419_stub_name (section, ldst_offset); | |
3321 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
3322 | FALSE, FALSE); | |
3323 | if (stub_entry) | |
3324 | { | |
3325 | free (stub_name); | |
3326 | return TRUE; | |
3327 | } | |
3328 | ||
3329 | /* We always place an 843419 workaround veneer in the stub section | |
3330 | attached to the input section in which an erratum sequence has | |
3331 | been found. This ensures that later in the link process (in | |
3332 | elfNN_aarch64_write_section) when we copy the veneered | |
3333 | instruction from the input section into the stub section the | |
3334 | copied instruction will have had any relocations applied to it. | |
3335 | If we placed workaround veneers in any other stub section then we | |
3336 | could not assume that all relocations have been processed on the | |
3337 | corresponding input section at the point we output the stub | |
3338 | section. | |
3339 | */ | |
3340 | ||
3341 | stub_entry = _bfd_aarch64_add_stub_entry_after (stub_name, section, htab); | |
3342 | if (stub_entry == NULL) | |
3343 | { | |
3344 | free (stub_name); | |
3345 | return FALSE; | |
3346 | } | |
3347 | ||
3348 | stub_entry->adrp_offset = adrp_offset; | |
3349 | stub_entry->target_value = ldst_offset; | |
3350 | stub_entry->target_section = section; | |
3351 | stub_entry->stub_type = aarch64_stub_erratum_843419_veneer; | |
3352 | stub_entry->veneered_insn = insn; | |
3353 | stub_entry->output_name = stub_name; | |
3354 | ||
3355 | return TRUE; | |
3356 | } | |
3357 | ||
3358 | ||
3359 | /* Scan an input section looking for the signature of erratum 843419. | |
3360 | ||
3361 | Scans input SECTION in INPUT_BFD looking for erratum 843419 | |
3362 | signatures, for each signature found a stub_entry is created | |
3363 | describing the location of the erratum for subsequent fixup. | |
3364 | ||
3365 | Return TRUE on successful scan, FALSE on failure to scan. | |
3366 | */ | |
3367 | ||
3368 | static bfd_boolean | |
3369 | _bfd_aarch64_erratum_843419_scan (bfd *input_bfd, asection *section, | |
3370 | struct bfd_link_info *info) | |
3371 | { | |
3372 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
3373 | ||
3374 | if (htab == NULL) | |
3375 | return TRUE; | |
3376 | ||
3377 | if (elf_section_type (section) != SHT_PROGBITS | |
3378 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
3379 | || (section->flags & SEC_EXCLUDE) != 0 | |
3380 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
3381 | || (section->output_section == bfd_abs_section_ptr)) | |
3382 | return TRUE; | |
3383 | ||
3384 | do | |
3385 | { | |
3386 | bfd_byte *contents = NULL; | |
3387 | struct _aarch64_elf_section_data *sec_data; | |
3388 | unsigned int span; | |
3389 | ||
3390 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
3391 | contents = elf_section_data (section)->this_hdr.contents; | |
3392 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
3393 | return FALSE; | |
3394 | ||
3395 | sec_data = elf_aarch64_section_data (section); | |
3396 | ||
3397 | qsort (sec_data->map, sec_data->mapcount, | |
3398 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
3399 | ||
3400 | for (span = 0; span < sec_data->mapcount; span++) | |
3401 | { | |
3402 | unsigned int span_start = sec_data->map[span].vma; | |
3403 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
3404 | ? sec_data->map[0].vma + section->size | |
3405 | : sec_data->map[span + 1].vma); | |
3406 | unsigned int i; | |
3407 | char span_type = sec_data->map[span].type; | |
3408 | ||
3409 | if (span_type == 'd') | |
3410 | continue; | |
3411 | ||
3412 | for (i = span_start; i + 8 < span_end; i += 4) | |
3413 | { | |
3414 | bfd_vma vma = (section->output_section->vma | |
3415 | + section->output_offset | |
3416 | + i); | |
3417 | bfd_vma veneer_i; | |
3418 | ||
3419 | if (_bfd_aarch64_erratum_843419_p | |
3420 | (contents, vma, i, span_end, &veneer_i)) | |
3421 | { | |
3422 | uint32_t insn = bfd_getl32 (contents + veneer_i); | |
3423 | ||
3424 | if (!_bfd_aarch64_erratum_843419_fixup (insn, i, veneer_i, | |
3425 | section, info)) | |
3426 | return FALSE; | |
3427 | } | |
3428 | } | |
3429 | } | |
3430 | ||
3431 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
3432 | free (contents); | |
61865519 | 3433 | } |
4106101c MS |
3434 | while (0); |
3435 | ||
3436 | return TRUE; | |
61865519 | 3437 | } |
13f622ec | 3438 | |
4106101c | 3439 | |
a06ea964 NC |
3440 | /* Determine and set the size of the stub section for a final link. |
3441 | ||
3442 | The basic idea here is to examine all the relocations looking for | |
3443 | PC-relative calls to a target that is unreachable with a "bl" | |
3444 | instruction. */ | |
3445 | ||
3446 | bfd_boolean | |
cec5225b | 3447 | elfNN_aarch64_size_stubs (bfd *output_bfd, |
a06ea964 NC |
3448 | bfd *stub_bfd, |
3449 | struct bfd_link_info *info, | |
3450 | bfd_signed_vma group_size, | |
3451 | asection * (*add_stub_section) (const char *, | |
3452 | asection *), | |
3453 | void (*layout_sections_again) (void)) | |
3454 | { | |
3455 | bfd_size_type stub_group_size; | |
3456 | bfd_boolean stubs_always_before_branch; | |
5421cc6e | 3457 | bfd_boolean stub_changed = FALSE; |
cec5225b | 3458 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); |
68fcca92 | 3459 | unsigned int num_erratum_835769_fixes = 0; |
a06ea964 NC |
3460 | |
3461 | /* Propagate mach to stub bfd, because it may not have been | |
3462 | finalized when we created stub_bfd. */ | |
3463 | bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd), | |
3464 | bfd_get_mach (output_bfd)); | |
3465 | ||
3466 | /* Stash our params away. */ | |
3467 | htab->stub_bfd = stub_bfd; | |
3468 | htab->add_stub_section = add_stub_section; | |
3469 | htab->layout_sections_again = layout_sections_again; | |
3470 | stubs_always_before_branch = group_size < 0; | |
3471 | if (group_size < 0) | |
3472 | stub_group_size = -group_size; | |
3473 | else | |
3474 | stub_group_size = group_size; | |
3475 | ||
3476 | if (stub_group_size == 1) | |
3477 | { | |
3478 | /* Default values. */ | |
b9eead84 | 3479 | /* AArch64 branch range is +-128MB. The value used is 1MB less. */ |
a06ea964 NC |
3480 | stub_group_size = 127 * 1024 * 1024; |
3481 | } | |
3482 | ||
3483 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
3484 | ||
4106101c MS |
3485 | (*htab->layout_sections_again) (); |
3486 | ||
5421cc6e MS |
3487 | if (htab->fix_erratum_835769) |
3488 | { | |
3489 | bfd *input_bfd; | |
3490 | ||
3491 | for (input_bfd = info->input_bfds; | |
3492 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
3493 | if (!_bfd_aarch64_erratum_835769_scan (input_bfd, info, | |
3494 | &num_erratum_835769_fixes)) | |
3495 | return FALSE; | |
3496 | ||
4106101c MS |
3497 | _bfd_aarch64_resize_stubs (htab); |
3498 | (*htab->layout_sections_again) (); | |
3499 | } | |
3500 | ||
3501 | if (htab->fix_erratum_843419) | |
3502 | { | |
3503 | bfd *input_bfd; | |
3504 | ||
3505 | for (input_bfd = info->input_bfds; | |
3506 | input_bfd != NULL; | |
3507 | input_bfd = input_bfd->link.next) | |
3508 | { | |
3509 | asection *section; | |
3510 | ||
3511 | for (section = input_bfd->sections; | |
3512 | section != NULL; | |
3513 | section = section->next) | |
3514 | if (!_bfd_aarch64_erratum_843419_scan (input_bfd, section, info)) | |
3515 | return FALSE; | |
3516 | } | |
3517 | ||
3518 | _bfd_aarch64_resize_stubs (htab); | |
3519 | (*htab->layout_sections_again) (); | |
5421cc6e MS |
3520 | } |
3521 | ||
a06ea964 NC |
3522 | while (1) |
3523 | { | |
3524 | bfd *input_bfd; | |
a06ea964 | 3525 | |
9b9971aa MS |
3526 | for (input_bfd = info->input_bfds; |
3527 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
a06ea964 NC |
3528 | { |
3529 | Elf_Internal_Shdr *symtab_hdr; | |
3530 | asection *section; | |
3531 | Elf_Internal_Sym *local_syms = NULL; | |
3532 | ||
3533 | /* We'll need the symbol table in a second. */ | |
3534 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3535 | if (symtab_hdr->sh_info == 0) | |
3536 | continue; | |
3537 | ||
3538 | /* Walk over each section attached to the input bfd. */ | |
3539 | for (section = input_bfd->sections; | |
3540 | section != NULL; section = section->next) | |
3541 | { | |
3542 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
3543 | ||
3544 | /* If there aren't any relocs, then there's nothing more | |
3545 | to do. */ | |
3546 | if ((section->flags & SEC_RELOC) == 0 | |
3547 | || section->reloc_count == 0 | |
3548 | || (section->flags & SEC_CODE) == 0) | |
3549 | continue; | |
3550 | ||
3551 | /* If this section is a link-once section that will be | |
3552 | discarded, then don't create any stubs. */ | |
3553 | if (section->output_section == NULL | |
3554 | || section->output_section->owner != output_bfd) | |
3555 | continue; | |
3556 | ||
3557 | /* Get the relocs. */ | |
3558 | internal_relocs | |
3559 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, | |
3560 | NULL, info->keep_memory); | |
3561 | if (internal_relocs == NULL) | |
3562 | goto error_ret_free_local; | |
3563 | ||
3564 | /* Now examine each relocation. */ | |
3565 | irela = internal_relocs; | |
3566 | irelaend = irela + section->reloc_count; | |
3567 | for (; irela < irelaend; irela++) | |
3568 | { | |
3569 | unsigned int r_type, r_indx; | |
cec5225b YZ |
3570 | enum elf_aarch64_stub_type stub_type; |
3571 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
a06ea964 NC |
3572 | asection *sym_sec; |
3573 | bfd_vma sym_value; | |
3574 | bfd_vma destination; | |
cec5225b | 3575 | struct elf_aarch64_link_hash_entry *hash; |
a06ea964 NC |
3576 | const char *sym_name; |
3577 | char *stub_name; | |
3578 | const asection *id_sec; | |
3579 | unsigned char st_type; | |
3580 | bfd_size_type len; | |
3581 | ||
cec5225b YZ |
3582 | r_type = ELFNN_R_TYPE (irela->r_info); |
3583 | r_indx = ELFNN_R_SYM (irela->r_info); | |
a06ea964 NC |
3584 | |
3585 | if (r_type >= (unsigned int) R_AARCH64_end) | |
3586 | { | |
3587 | bfd_set_error (bfd_error_bad_value); | |
3588 | error_ret_free_internal: | |
3589 | if (elf_section_data (section)->relocs == NULL) | |
3590 | free (internal_relocs); | |
3591 | goto error_ret_free_local; | |
3592 | } | |
3593 | ||
3594 | /* Only look for stubs on unconditional branch and | |
3595 | branch and link instructions. */ | |
a6bb11b2 YZ |
3596 | if (r_type != (unsigned int) AARCH64_R (CALL26) |
3597 | && r_type != (unsigned int) AARCH64_R (JUMP26)) | |
a06ea964 NC |
3598 | continue; |
3599 | ||
3600 | /* Now determine the call target, its name, value, | |
3601 | section. */ | |
3602 | sym_sec = NULL; | |
3603 | sym_value = 0; | |
3604 | destination = 0; | |
3605 | hash = NULL; | |
3606 | sym_name = NULL; | |
3607 | if (r_indx < symtab_hdr->sh_info) | |
3608 | { | |
3609 | /* It's a local symbol. */ | |
3610 | Elf_Internal_Sym *sym; | |
3611 | Elf_Internal_Shdr *hdr; | |
3612 | ||
3613 | if (local_syms == NULL) | |
3614 | { | |
3615 | local_syms | |
3616 | = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3617 | if (local_syms == NULL) | |
3618 | local_syms | |
3619 | = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
3620 | symtab_hdr->sh_info, 0, | |
3621 | NULL, NULL, NULL); | |
3622 | if (local_syms == NULL) | |
3623 | goto error_ret_free_internal; | |
3624 | } | |
3625 | ||
3626 | sym = local_syms + r_indx; | |
3627 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
3628 | sym_sec = hdr->bfd_section; | |
3629 | if (!sym_sec) | |
3630 | /* This is an undefined symbol. It can never | |
3631 | be resolved. */ | |
3632 | continue; | |
3633 | ||
3634 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
3635 | sym_value = sym->st_value; | |
3636 | destination = (sym_value + irela->r_addend | |
3637 | + sym_sec->output_offset | |
3638 | + sym_sec->output_section->vma); | |
3639 | st_type = ELF_ST_TYPE (sym->st_info); | |
3640 | sym_name | |
3641 | = bfd_elf_string_from_elf_section (input_bfd, | |
3642 | symtab_hdr->sh_link, | |
3643 | sym->st_name); | |
3644 | } | |
3645 | else | |
3646 | { | |
3647 | int e_indx; | |
3648 | ||
3649 | e_indx = r_indx - symtab_hdr->sh_info; | |
cec5225b | 3650 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
3651 | elf_sym_hashes (input_bfd)[e_indx]); |
3652 | ||
3653 | while (hash->root.root.type == bfd_link_hash_indirect | |
3654 | || hash->root.root.type == bfd_link_hash_warning) | |
cec5225b | 3655 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
3656 | hash->root.root.u.i.link); |
3657 | ||
3658 | if (hash->root.root.type == bfd_link_hash_defined | |
3659 | || hash->root.root.type == bfd_link_hash_defweak) | |
3660 | { | |
cec5225b YZ |
3661 | struct elf_aarch64_link_hash_table *globals = |
3662 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
3663 | sym_sec = hash->root.root.u.def.section; |
3664 | sym_value = hash->root.root.u.def.value; | |
3665 | /* For a destination in a shared library, | |
3666 | use the PLT stub as target address to | |
3667 | decide whether a branch stub is | |
3668 | needed. */ | |
3669 | if (globals->root.splt != NULL && hash != NULL | |
3670 | && hash->root.plt.offset != (bfd_vma) - 1) | |
3671 | { | |
3672 | sym_sec = globals->root.splt; | |
3673 | sym_value = hash->root.plt.offset; | |
3674 | if (sym_sec->output_section != NULL) | |
3675 | destination = (sym_value | |
3676 | + sym_sec->output_offset | |
3677 | + | |
3678 | sym_sec->output_section->vma); | |
3679 | } | |
3680 | else if (sym_sec->output_section != NULL) | |
3681 | destination = (sym_value + irela->r_addend | |
3682 | + sym_sec->output_offset | |
3683 | + sym_sec->output_section->vma); | |
3684 | } | |
3685 | else if (hash->root.root.type == bfd_link_hash_undefined | |
3686 | || (hash->root.root.type | |
3687 | == bfd_link_hash_undefweak)) | |
3688 | { | |
3689 | /* For a shared library, use the PLT stub as | |
3690 | target address to decide whether a long | |
3691 | branch stub is needed. | |
3692 | For absolute code, they cannot be handled. */ | |
cec5225b YZ |
3693 | struct elf_aarch64_link_hash_table *globals = |
3694 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
3695 | |
3696 | if (globals->root.splt != NULL && hash != NULL | |
3697 | && hash->root.plt.offset != (bfd_vma) - 1) | |
3698 | { | |
3699 | sym_sec = globals->root.splt; | |
3700 | sym_value = hash->root.plt.offset; | |
3701 | if (sym_sec->output_section != NULL) | |
3702 | destination = (sym_value | |
3703 | + sym_sec->output_offset | |
3704 | + | |
3705 | sym_sec->output_section->vma); | |
3706 | } | |
3707 | else | |
3708 | continue; | |
3709 | } | |
3710 | else | |
3711 | { | |
3712 | bfd_set_error (bfd_error_bad_value); | |
3713 | goto error_ret_free_internal; | |
3714 | } | |
3715 | st_type = ELF_ST_TYPE (hash->root.type); | |
3716 | sym_name = hash->root.root.root.string; | |
3717 | } | |
3718 | ||
3719 | /* Determine what (if any) linker stub is needed. */ | |
3720 | stub_type = aarch64_type_of_stub | |
3721 | (info, section, irela, st_type, hash, destination); | |
3722 | if (stub_type == aarch64_stub_none) | |
3723 | continue; | |
3724 | ||
3725 | /* Support for grouping stub sections. */ | |
3726 | id_sec = htab->stub_group[section->id].link_sec; | |
3727 | ||
3728 | /* Get the name of this stub. */ | |
cec5225b | 3729 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, hash, |
a06ea964 NC |
3730 | irela); |
3731 | if (!stub_name) | |
3732 | goto error_ret_free_internal; | |
3733 | ||
3734 | stub_entry = | |
3735 | aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
3736 | stub_name, FALSE, FALSE); | |
3737 | if (stub_entry != NULL) | |
3738 | { | |
3739 | /* The proper stub has already been created. */ | |
3740 | free (stub_name); | |
3741 | continue; | |
3742 | } | |
3743 | ||
ef857521 MS |
3744 | stub_entry = _bfd_aarch64_add_stub_entry_in_group |
3745 | (stub_name, section, htab); | |
a06ea964 NC |
3746 | if (stub_entry == NULL) |
3747 | { | |
3748 | free (stub_name); | |
3749 | goto error_ret_free_internal; | |
3750 | } | |
3751 | ||
3752 | stub_entry->target_value = sym_value; | |
3753 | stub_entry->target_section = sym_sec; | |
3754 | stub_entry->stub_type = stub_type; | |
3755 | stub_entry->h = hash; | |
3756 | stub_entry->st_type = st_type; | |
3757 | ||
3758 | if (sym_name == NULL) | |
3759 | sym_name = "unnamed"; | |
3760 | len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name); | |
3761 | stub_entry->output_name = bfd_alloc (htab->stub_bfd, len); | |
3762 | if (stub_entry->output_name == NULL) | |
3763 | { | |
3764 | free (stub_name); | |
3765 | goto error_ret_free_internal; | |
3766 | } | |
3767 | ||
3768 | snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME, | |
3769 | sym_name); | |
3770 | ||
3771 | stub_changed = TRUE; | |
3772 | } | |
3773 | ||
3774 | /* We're done with the internal relocs, free them. */ | |
3775 | if (elf_section_data (section)->relocs == NULL) | |
3776 | free (internal_relocs); | |
3777 | } | |
3778 | } | |
3779 | ||
3780 | if (!stub_changed) | |
3781 | break; | |
3782 | ||
13f622ec | 3783 | _bfd_aarch64_resize_stubs (htab); |
a06ea964 NC |
3784 | |
3785 | /* Ask the linker to do its stuff. */ | |
3786 | (*htab->layout_sections_again) (); | |
3787 | stub_changed = FALSE; | |
3788 | } | |
3789 | ||
3790 | return TRUE; | |
3791 | ||
3792 | error_ret_free_local: | |
3793 | return FALSE; | |
3794 | } | |
3795 | ||
3796 | /* Build all the stubs associated with the current output file. The | |
3797 | stubs are kept in a hash table attached to the main linker hash | |
3798 | table. We also set up the .plt entries for statically linked PIC | |
3799 | functions here. This function is called via aarch64_elf_finish in the | |
3800 | linker. */ | |
3801 | ||
3802 | bfd_boolean | |
cec5225b | 3803 | elfNN_aarch64_build_stubs (struct bfd_link_info *info) |
a06ea964 NC |
3804 | { |
3805 | asection *stub_sec; | |
3806 | struct bfd_hash_table *table; | |
cec5225b | 3807 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 3808 | |
cec5225b | 3809 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
3810 | |
3811 | for (stub_sec = htab->stub_bfd->sections; | |
3812 | stub_sec != NULL; stub_sec = stub_sec->next) | |
3813 | { | |
3814 | bfd_size_type size; | |
3815 | ||
3816 | /* Ignore non-stub sections. */ | |
3817 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
3818 | continue; | |
3819 | ||
3820 | /* Allocate memory to hold the linker stubs. */ | |
3821 | size = stub_sec->size; | |
3822 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); | |
3823 | if (stub_sec->contents == NULL && size != 0) | |
3824 | return FALSE; | |
3825 | stub_sec->size = 0; | |
61865519 MS |
3826 | |
3827 | bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents); | |
3828 | stub_sec->size += 4; | |
a06ea964 NC |
3829 | } |
3830 | ||
3831 | /* Build the stubs as directed by the stub hash table. */ | |
3832 | table = &htab->stub_hash_table; | |
3833 | bfd_hash_traverse (table, aarch64_build_one_stub, info); | |
3834 | ||
3835 | return TRUE; | |
3836 | } | |
3837 | ||
3838 | ||
3839 | /* Add an entry to the code/data map for section SEC. */ | |
3840 | ||
3841 | static void | |
cec5225b | 3842 | elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma) |
a06ea964 NC |
3843 | { |
3844 | struct _aarch64_elf_section_data *sec_data = | |
cec5225b | 3845 | elf_aarch64_section_data (sec); |
a06ea964 NC |
3846 | unsigned int newidx; |
3847 | ||
3848 | if (sec_data->map == NULL) | |
3849 | { | |
cec5225b | 3850 | sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
3851 | sec_data->mapcount = 0; |
3852 | sec_data->mapsize = 1; | |
3853 | } | |
3854 | ||
3855 | newidx = sec_data->mapcount++; | |
3856 | ||
3857 | if (sec_data->mapcount > sec_data->mapsize) | |
3858 | { | |
3859 | sec_data->mapsize *= 2; | |
3860 | sec_data->map = bfd_realloc_or_free | |
cec5225b | 3861 | (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
3862 | } |
3863 | ||
3864 | if (sec_data->map) | |
3865 | { | |
3866 | sec_data->map[newidx].vma = vma; | |
3867 | sec_data->map[newidx].type = type; | |
3868 | } | |
3869 | } | |
3870 | ||
3871 | ||
3872 | /* Initialise maps of insn/data for input BFDs. */ | |
3873 | void | |
cec5225b | 3874 | bfd_elfNN_aarch64_init_maps (bfd *abfd) |
a06ea964 NC |
3875 | { |
3876 | Elf_Internal_Sym *isymbuf; | |
3877 | Elf_Internal_Shdr *hdr; | |
3878 | unsigned int i, localsyms; | |
3879 | ||
3880 | /* Make sure that we are dealing with an AArch64 elf binary. */ | |
3881 | if (!is_aarch64_elf (abfd)) | |
3882 | return; | |
3883 | ||
3884 | if ((abfd->flags & DYNAMIC) != 0) | |
68fcca92 | 3885 | return; |
a06ea964 NC |
3886 | |
3887 | hdr = &elf_symtab_hdr (abfd); | |
3888 | localsyms = hdr->sh_info; | |
3889 | ||
3890 | /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field | |
3891 | should contain the number of local symbols, which should come before any | |
3892 | global symbols. Mapping symbols are always local. */ | |
3893 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL); | |
3894 | ||
3895 | /* No internal symbols read? Skip this BFD. */ | |
3896 | if (isymbuf == NULL) | |
3897 | return; | |
3898 | ||
3899 | for (i = 0; i < localsyms; i++) | |
3900 | { | |
3901 | Elf_Internal_Sym *isym = &isymbuf[i]; | |
3902 | asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
3903 | const char *name; | |
3904 | ||
3905 | if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL) | |
3906 | { | |
3907 | name = bfd_elf_string_from_elf_section (abfd, | |
3908 | hdr->sh_link, | |
3909 | isym->st_name); | |
3910 | ||
3911 | if (bfd_is_aarch64_special_symbol_name | |
3912 | (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP)) | |
cec5225b | 3913 | elfNN_aarch64_section_map_add (sec, name[1], isym->st_value); |
a06ea964 NC |
3914 | } |
3915 | } | |
3916 | } | |
3917 | ||
3918 | /* Set option values needed during linking. */ | |
3919 | void | |
cec5225b | 3920 | bfd_elfNN_aarch64_set_options (struct bfd *output_bfd, |
a06ea964 NC |
3921 | struct bfd_link_info *link_info, |
3922 | int no_enum_warn, | |
68fcca92 | 3923 | int no_wchar_warn, int pic_veneer, |
4106101c MS |
3924 | int fix_erratum_835769, |
3925 | int fix_erratum_843419) | |
a06ea964 | 3926 | { |
cec5225b | 3927 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 3928 | |
cec5225b | 3929 | globals = elf_aarch64_hash_table (link_info); |
a06ea964 | 3930 | globals->pic_veneer = pic_veneer; |
68fcca92 | 3931 | globals->fix_erratum_835769 = fix_erratum_835769; |
4106101c MS |
3932 | globals->fix_erratum_843419 = fix_erratum_843419; |
3933 | globals->fix_erratum_843419_adr = TRUE; | |
a06ea964 NC |
3934 | |
3935 | BFD_ASSERT (is_aarch64_elf (output_bfd)); | |
3936 | elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn; | |
3937 | elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn; | |
3938 | } | |
3939 | ||
a06ea964 NC |
3940 | static bfd_vma |
3941 | aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h, | |
cec5225b | 3942 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
3943 | *globals, struct bfd_link_info *info, |
3944 | bfd_vma value, bfd *output_bfd, | |
3945 | bfd_boolean *unresolved_reloc_p) | |
3946 | { | |
3947 | bfd_vma off = (bfd_vma) - 1; | |
3948 | asection *basegot = globals->root.sgot; | |
3949 | bfd_boolean dyn = globals->root.dynamic_sections_created; | |
3950 | ||
3951 | if (h != NULL) | |
3952 | { | |
a6bb11b2 | 3953 | BFD_ASSERT (basegot != NULL); |
a06ea964 NC |
3954 | off = h->got.offset; |
3955 | BFD_ASSERT (off != (bfd_vma) - 1); | |
3956 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
3957 | || (info->shared | |
3958 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
3959 | || (ELF_ST_VISIBILITY (h->other) | |
3960 | && h->root.type == bfd_link_hash_undefweak)) | |
3961 | { | |
3962 | /* This is actually a static link, or it is a -Bsymbolic link | |
3963 | and the symbol is defined locally. We must initialize this | |
3964 | entry in the global offset table. Since the offset must | |
a6bb11b2 YZ |
3965 | always be a multiple of 8 (4 in the case of ILP32), we use |
3966 | the least significant bit to record whether we have | |
3967 | initialized it already. | |
a06ea964 NC |
3968 | When doing a dynamic link, we create a .rel(a).got relocation |
3969 | entry to initialize the value. This is done in the | |
3970 | finish_dynamic_symbol routine. */ | |
3971 | if ((off & 1) != 0) | |
3972 | off &= ~1; | |
3973 | else | |
3974 | { | |
cec5225b | 3975 | bfd_put_NN (output_bfd, value, basegot->contents + off); |
a06ea964 NC |
3976 | h->got.offset |= 1; |
3977 | } | |
3978 | } | |
3979 | else | |
3980 | *unresolved_reloc_p = FALSE; | |
3981 | ||
3982 | off = off + basegot->output_section->vma + basegot->output_offset; | |
3983 | } | |
3984 | ||
3985 | return off; | |
3986 | } | |
3987 | ||
3988 | /* Change R_TYPE to a more efficient access model where possible, | |
3989 | return the new reloc type. */ | |
3990 | ||
a6bb11b2 YZ |
3991 | static bfd_reloc_code_real_type |
3992 | aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type, | |
a06ea964 NC |
3993 | struct elf_link_hash_entry *h) |
3994 | { | |
3995 | bfd_boolean is_local = h == NULL; | |
a6bb11b2 | 3996 | |
a06ea964 NC |
3997 | switch (r_type) |
3998 | { | |
a6bb11b2 | 3999 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 4000 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a6bb11b2 YZ |
4001 | return (is_local |
4002 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4003 | : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21); | |
4004 | ||
389b8029 MS |
4005 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
4006 | return (is_local | |
4007 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4008 | : r_type); | |
4009 | ||
1ada945d MS |
4010 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
4011 | return (is_local | |
4012 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4013 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4014 | ||
a6bb11b2 | 4015 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
ce336788 | 4016 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 YZ |
4017 | return (is_local |
4018 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4019 | : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC); | |
4020 | ||
4021 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: | |
4022 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type; | |
4023 | ||
4024 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
4025 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type; | |
4026 | ||
043bf05a MS |
4027 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
4028 | return r_type; | |
4029 | ||
3c12b054 MS |
4030 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
4031 | return (is_local | |
4032 | ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 | |
4033 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4034 | ||
a6bb11b2 YZ |
4035 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
4036 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
a06ea964 | 4037 | /* Instructions with these relocations will become NOPs. */ |
a6bb11b2 YZ |
4038 | return BFD_RELOC_AARCH64_NONE; |
4039 | ||
4040 | default: | |
4041 | break; | |
a06ea964 NC |
4042 | } |
4043 | ||
4044 | return r_type; | |
4045 | } | |
4046 | ||
4047 | static unsigned int | |
a6bb11b2 | 4048 | aarch64_reloc_got_type (bfd_reloc_code_real_type r_type) |
a06ea964 NC |
4049 | { |
4050 | switch (r_type) | |
4051 | { | |
a6bb11b2 YZ |
4052 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
4053 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
ce336788 | 4054 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 4055 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 4056 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
a06ea964 NC |
4057 | return GOT_NORMAL; |
4058 | ||
ce336788 | 4059 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 4060 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 4061 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a06ea964 NC |
4062 | return GOT_TLS_GD; |
4063 | ||
a6bb11b2 YZ |
4064 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
4065 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
389b8029 | 4066 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 4067 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a6bb11b2 | 4068 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
ce336788 | 4069 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: |
1ada945d | 4070 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
4071 | return GOT_TLSDESC_GD; |
4072 | ||
a6bb11b2 | 4073 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 4074 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 4075 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 4076 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
a06ea964 NC |
4077 | return GOT_TLS_IE; |
4078 | ||
a6bb11b2 YZ |
4079 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
4080 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: | |
4081 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: | |
4082 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: | |
4083 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
4084 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: | |
4085 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
4086 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
a06ea964 | 4087 | return GOT_UNKNOWN; |
a6bb11b2 YZ |
4088 | |
4089 | default: | |
4090 | break; | |
a06ea964 NC |
4091 | } |
4092 | return GOT_UNKNOWN; | |
4093 | } | |
4094 | ||
4095 | static bfd_boolean | |
4096 | aarch64_can_relax_tls (bfd *input_bfd, | |
4097 | struct bfd_link_info *info, | |
a6bb11b2 | 4098 | bfd_reloc_code_real_type r_type, |
a06ea964 NC |
4099 | struct elf_link_hash_entry *h, |
4100 | unsigned long r_symndx) | |
4101 | { | |
4102 | unsigned int symbol_got_type; | |
4103 | unsigned int reloc_got_type; | |
4104 | ||
4105 | if (! IS_AARCH64_TLS_RELOC (r_type)) | |
4106 | return FALSE; | |
4107 | ||
cec5225b | 4108 | symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx); |
a06ea964 NC |
4109 | reloc_got_type = aarch64_reloc_got_type (r_type); |
4110 | ||
4111 | if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type)) | |
4112 | return TRUE; | |
4113 | ||
4114 | if (info->shared) | |
4115 | return FALSE; | |
4116 | ||
4117 | if (h && h->root.type == bfd_link_hash_undefweak) | |
4118 | return FALSE; | |
4119 | ||
4120 | return TRUE; | |
4121 | } | |
4122 | ||
a6bb11b2 YZ |
4123 | /* Given the relocation code R_TYPE, return the relaxed bfd reloc |
4124 | enumerator. */ | |
4125 | ||
4126 | static bfd_reloc_code_real_type | |
a06ea964 NC |
4127 | aarch64_tls_transition (bfd *input_bfd, |
4128 | struct bfd_link_info *info, | |
4129 | unsigned int r_type, | |
4130 | struct elf_link_hash_entry *h, | |
4131 | unsigned long r_symndx) | |
4132 | { | |
a6bb11b2 YZ |
4133 | bfd_reloc_code_real_type bfd_r_type |
4134 | = elfNN_aarch64_bfd_reloc_from_type (r_type); | |
a06ea964 | 4135 | |
a6bb11b2 YZ |
4136 | if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx)) |
4137 | return bfd_r_type; | |
4138 | ||
4139 | return aarch64_tls_transition_without_check (bfd_r_type, h); | |
a06ea964 NC |
4140 | } |
4141 | ||
4142 | /* Return the base VMA address which should be subtracted from real addresses | |
a6bb11b2 | 4143 | when resolving R_AARCH64_TLS_DTPREL relocation. */ |
a06ea964 NC |
4144 | |
4145 | static bfd_vma | |
4146 | dtpoff_base (struct bfd_link_info *info) | |
4147 | { | |
4148 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
4149 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); | |
4150 | return elf_hash_table (info)->tls_sec->vma; | |
4151 | } | |
4152 | ||
a06ea964 NC |
4153 | /* Return the base VMA address which should be subtracted from real addresses |
4154 | when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */ | |
4155 | ||
4156 | static bfd_vma | |
4157 | tpoff_base (struct bfd_link_info *info) | |
4158 | { | |
4159 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
4160 | ||
4161 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
ac21917f | 4162 | BFD_ASSERT (htab->tls_sec != NULL); |
a06ea964 NC |
4163 | |
4164 | bfd_vma base = align_power ((bfd_vma) TCB_SIZE, | |
4165 | htab->tls_sec->alignment_power); | |
4166 | return htab->tls_sec->vma - base; | |
4167 | } | |
4168 | ||
4169 | static bfd_vma * | |
4170 | symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4171 | unsigned long r_symndx) | |
4172 | { | |
4173 | /* Calculate the address of the GOT entry for symbol | |
4174 | referred to in h. */ | |
4175 | if (h != NULL) | |
4176 | return &h->got.offset; | |
4177 | else | |
4178 | { | |
4179 | /* local symbol */ | |
4180 | struct elf_aarch64_local_symbol *l; | |
4181 | ||
cec5225b | 4182 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
4183 | return &l[r_symndx].got_offset; |
4184 | } | |
4185 | } | |
4186 | ||
4187 | static void | |
4188 | symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4189 | unsigned long r_symndx) | |
4190 | { | |
4191 | bfd_vma *p; | |
4192 | p = symbol_got_offset_ref (input_bfd, h, r_symndx); | |
4193 | *p |= 1; | |
4194 | } | |
4195 | ||
4196 | static int | |
4197 | symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4198 | unsigned long r_symndx) | |
4199 | { | |
4200 | bfd_vma value; | |
4201 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
4202 | return value & 1; | |
4203 | } | |
4204 | ||
4205 | static bfd_vma | |
4206 | symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4207 | unsigned long r_symndx) | |
4208 | { | |
4209 | bfd_vma value; | |
4210 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
4211 | value &= ~1; | |
4212 | return value; | |
4213 | } | |
4214 | ||
4215 | static bfd_vma * | |
4216 | symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4217 | unsigned long r_symndx) | |
4218 | { | |
4219 | /* Calculate the address of the GOT entry for symbol | |
4220 | referred to in h. */ | |
4221 | if (h != NULL) | |
4222 | { | |
cec5225b YZ |
4223 | struct elf_aarch64_link_hash_entry *eh; |
4224 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
4225 | return &eh->tlsdesc_got_jump_table_offset; |
4226 | } | |
4227 | else | |
4228 | { | |
4229 | /* local symbol */ | |
4230 | struct elf_aarch64_local_symbol *l; | |
4231 | ||
cec5225b | 4232 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
4233 | return &l[r_symndx].tlsdesc_got_jump_table_offset; |
4234 | } | |
4235 | } | |
4236 | ||
4237 | static void | |
4238 | symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4239 | unsigned long r_symndx) | |
4240 | { | |
4241 | bfd_vma *p; | |
4242 | p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
4243 | *p |= 1; | |
4244 | } | |
4245 | ||
4246 | static int | |
4247 | symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd, | |
4248 | struct elf_link_hash_entry *h, | |
4249 | unsigned long r_symndx) | |
4250 | { | |
4251 | bfd_vma value; | |
4252 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
4253 | return value & 1; | |
4254 | } | |
4255 | ||
4256 | static bfd_vma | |
4257 | symbol_tlsdesc_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4258 | unsigned long r_symndx) | |
4259 | { | |
4260 | bfd_vma value; | |
4261 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
4262 | value &= ~1; | |
4263 | return value; | |
4264 | } | |
4265 | ||
68fcca92 JW |
4266 | /* Data for make_branch_to_erratum_835769_stub(). */ |
4267 | ||
4268 | struct erratum_835769_branch_to_stub_data | |
4269 | { | |
4106101c | 4270 | struct bfd_link_info *info; |
68fcca92 JW |
4271 | asection *output_section; |
4272 | bfd_byte *contents; | |
4273 | }; | |
4274 | ||
4275 | /* Helper to insert branches to erratum 835769 stubs in the right | |
4276 | places for a particular section. */ | |
4277 | ||
4278 | static bfd_boolean | |
4279 | make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry, | |
4280 | void *in_arg) | |
4281 | { | |
4282 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
4283 | struct erratum_835769_branch_to_stub_data *data; | |
4284 | bfd_byte *contents; | |
4285 | unsigned long branch_insn = 0; | |
4286 | bfd_vma veneered_insn_loc, veneer_entry_loc; | |
4287 | bfd_signed_vma branch_offset; | |
4288 | unsigned int target; | |
4289 | bfd *abfd; | |
4290 | ||
4291 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
4292 | data = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
4293 | ||
4294 | if (stub_entry->target_section != data->output_section | |
4295 | || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer) | |
4296 | return TRUE; | |
4297 | ||
4298 | contents = data->contents; | |
4299 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
4300 | + stub_entry->target_section->output_offset | |
4301 | + stub_entry->target_value; | |
4302 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
4303 | + stub_entry->stub_sec->output_offset | |
4304 | + stub_entry->stub_offset; | |
4305 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
4306 | ||
4307 | abfd = stub_entry->target_section->owner; | |
4308 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4309 | (*_bfd_error_handler) | |
4310 | (_("%B: error: Erratum 835769 stub out " | |
4311 | "of range (input file too large)"), abfd); | |
4312 | ||
4313 | target = stub_entry->target_value; | |
4314 | branch_insn = 0x14000000; | |
4315 | branch_offset >>= 2; | |
4316 | branch_offset &= 0x3ffffff; | |
4317 | branch_insn |= branch_offset; | |
4318 | bfd_putl32 (branch_insn, &contents[target]); | |
4319 | ||
4320 | return TRUE; | |
4321 | } | |
4322 | ||
4106101c MS |
4323 | |
4324 | static bfd_boolean | |
4325 | _bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry, | |
4326 | void *in_arg) | |
4327 | { | |
4328 | struct elf_aarch64_stub_hash_entry *stub_entry | |
4329 | = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
4330 | struct erratum_835769_branch_to_stub_data *data | |
4331 | = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
4332 | struct bfd_link_info *info; | |
4333 | struct elf_aarch64_link_hash_table *htab; | |
4334 | bfd_byte *contents; | |
4335 | asection *section; | |
4336 | bfd *abfd; | |
4337 | bfd_vma place; | |
4338 | uint32_t insn; | |
4339 | ||
4340 | info = data->info; | |
4341 | contents = data->contents; | |
4342 | section = data->output_section; | |
4343 | ||
4344 | htab = elf_aarch64_hash_table (info); | |
4345 | ||
4346 | if (stub_entry->target_section != section | |
4347 | || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer) | |
4348 | return TRUE; | |
4349 | ||
4350 | insn = bfd_getl32 (contents + stub_entry->target_value); | |
4351 | bfd_putl32 (insn, | |
4352 | stub_entry->stub_sec->contents + stub_entry->stub_offset); | |
4353 | ||
4354 | place = (section->output_section->vma + section->output_offset | |
4355 | + stub_entry->adrp_offset); | |
4356 | insn = bfd_getl32 (contents + stub_entry->adrp_offset); | |
4357 | ||
4358 | if ((insn & AARCH64_ADRP_OP_MASK) != AARCH64_ADRP_OP) | |
4359 | abort (); | |
4360 | ||
4361 | bfd_signed_vma imm = | |
4362 | (_bfd_aarch64_sign_extend | |
4363 | ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33) | |
4364 | - (place & 0xfff)); | |
4365 | ||
4366 | if (htab->fix_erratum_843419_adr | |
4367 | && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM)) | |
4368 | { | |
4369 | insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm) | |
4370 | | AARCH64_RT (insn)); | |
4371 | bfd_putl32 (insn, contents + stub_entry->adrp_offset); | |
4372 | } | |
4373 | else | |
4374 | { | |
4375 | bfd_vma veneered_insn_loc; | |
4376 | bfd_vma veneer_entry_loc; | |
4377 | bfd_signed_vma branch_offset; | |
4378 | uint32_t branch_insn; | |
4379 | ||
4380 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
4381 | + stub_entry->target_section->output_offset | |
4382 | + stub_entry->target_value; | |
4383 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
4384 | + stub_entry->stub_sec->output_offset | |
4385 | + stub_entry->stub_offset; | |
4386 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
4387 | ||
4388 | abfd = stub_entry->target_section->owner; | |
4389 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4390 | (*_bfd_error_handler) | |
4391 | (_("%B: error: Erratum 843419 stub out " | |
4392 | "of range (input file too large)"), abfd); | |
4393 | ||
4394 | branch_insn = 0x14000000; | |
4395 | branch_offset >>= 2; | |
4396 | branch_offset &= 0x3ffffff; | |
4397 | branch_insn |= branch_offset; | |
4398 | bfd_putl32 (branch_insn, contents + stub_entry->target_value); | |
4399 | } | |
4400 | return TRUE; | |
4401 | } | |
4402 | ||
4403 | ||
68fcca92 JW |
4404 | static bfd_boolean |
4405 | elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, | |
4406 | struct bfd_link_info *link_info, | |
4407 | asection *sec, | |
4408 | bfd_byte *contents) | |
4409 | ||
4410 | { | |
4411 | struct elf_aarch64_link_hash_table *globals = | |
f872121a | 4412 | elf_aarch64_hash_table (link_info); |
68fcca92 JW |
4413 | |
4414 | if (globals == NULL) | |
4415 | return FALSE; | |
4416 | ||
4417 | /* Fix code to point to erratum 835769 stubs. */ | |
4418 | if (globals->fix_erratum_835769) | |
4419 | { | |
4420 | struct erratum_835769_branch_to_stub_data data; | |
4421 | ||
4106101c | 4422 | data.info = link_info; |
68fcca92 JW |
4423 | data.output_section = sec; |
4424 | data.contents = contents; | |
4425 | bfd_hash_traverse (&globals->stub_hash_table, | |
4426 | make_branch_to_erratum_835769_stub, &data); | |
4427 | } | |
4428 | ||
4106101c MS |
4429 | if (globals->fix_erratum_843419) |
4430 | { | |
4431 | struct erratum_835769_branch_to_stub_data data; | |
4432 | ||
4433 | data.info = link_info; | |
4434 | data.output_section = sec; | |
4435 | data.contents = contents; | |
4436 | bfd_hash_traverse (&globals->stub_hash_table, | |
4437 | _bfd_aarch64_erratum_843419_branch_to_stub, &data); | |
4438 | } | |
4439 | ||
68fcca92 JW |
4440 | return FALSE; |
4441 | } | |
4442 | ||
a06ea964 NC |
4443 | /* Perform a relocation as part of a final link. */ |
4444 | static bfd_reloc_status_type | |
cec5225b | 4445 | elfNN_aarch64_final_link_relocate (reloc_howto_type *howto, |
a06ea964 NC |
4446 | bfd *input_bfd, |
4447 | bfd *output_bfd, | |
4448 | asection *input_section, | |
4449 | bfd_byte *contents, | |
4450 | Elf_Internal_Rela *rel, | |
4451 | bfd_vma value, | |
4452 | struct bfd_link_info *info, | |
4453 | asection *sym_sec, | |
4454 | struct elf_link_hash_entry *h, | |
4455 | bfd_boolean *unresolved_reloc_p, | |
4456 | bfd_boolean save_addend, | |
1419bbe5 WN |
4457 | bfd_vma *saved_addend, |
4458 | Elf_Internal_Sym *sym) | |
a06ea964 | 4459 | { |
1419bbe5 | 4460 | Elf_Internal_Shdr *symtab_hdr; |
a06ea964 | 4461 | unsigned int r_type = howto->type; |
a6bb11b2 YZ |
4462 | bfd_reloc_code_real_type bfd_r_type |
4463 | = elfNN_aarch64_bfd_reloc_from_howto (howto); | |
4464 | bfd_reloc_code_real_type new_bfd_r_type; | |
a06ea964 NC |
4465 | unsigned long r_symndx; |
4466 | bfd_byte *hit_data = contents + rel->r_offset; | |
b53b1bed | 4467 | bfd_vma place, off; |
a06ea964 | 4468 | bfd_signed_vma signed_addend; |
cec5225b | 4469 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 4470 | bfd_boolean weak_undef_p; |
b53b1bed | 4471 | asection *base_got; |
a06ea964 | 4472 | |
cec5225b | 4473 | globals = elf_aarch64_hash_table (info); |
a06ea964 | 4474 | |
1419bbe5 WN |
4475 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
4476 | ||
a06ea964 NC |
4477 | BFD_ASSERT (is_aarch64_elf (input_bfd)); |
4478 | ||
cec5225b | 4479 | r_symndx = ELFNN_R_SYM (rel->r_info); |
a06ea964 NC |
4480 | |
4481 | /* It is possible to have linker relaxations on some TLS access | |
4482 | models. Update our information here. */ | |
a6bb11b2 YZ |
4483 | new_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, h, r_symndx); |
4484 | if (new_bfd_r_type != bfd_r_type) | |
4485 | { | |
4486 | bfd_r_type = new_bfd_r_type; | |
4487 | howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type); | |
4488 | BFD_ASSERT (howto != NULL); | |
4489 | r_type = howto->type; | |
4490 | } | |
a06ea964 NC |
4491 | |
4492 | place = input_section->output_section->vma | |
4493 | + input_section->output_offset + rel->r_offset; | |
4494 | ||
4495 | /* Get addend, accumulating the addend for consecutive relocs | |
4496 | which refer to the same offset. */ | |
4497 | signed_addend = saved_addend ? *saved_addend : 0; | |
4498 | signed_addend += rel->r_addend; | |
4499 | ||
4500 | weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak | |
4501 | : bfd_is_und_section (sym_sec)); | |
a6bb11b2 | 4502 | |
1419bbe5 WN |
4503 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
4504 | it here if it is defined in a non-shared object. */ | |
4505 | if (h != NULL | |
4506 | && h->type == STT_GNU_IFUNC | |
4507 | && h->def_regular) | |
4508 | { | |
4509 | asection *plt; | |
4510 | const char *name; | |
99ad26cb | 4511 | bfd_vma addend = 0; |
1419bbe5 WN |
4512 | |
4513 | if ((input_section->flags & SEC_ALLOC) == 0 | |
4514 | || h->plt.offset == (bfd_vma) -1) | |
4515 | abort (); | |
4516 | ||
4517 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
4518 | plt = globals->root.splt ? globals->root.splt : globals->root.iplt; | |
4519 | value = (plt->output_section->vma + plt->output_offset + h->plt.offset); | |
4520 | ||
4521 | switch (bfd_r_type) | |
4522 | { | |
4523 | default: | |
4524 | if (h->root.root.string) | |
4525 | name = h->root.root.string; | |
4526 | else | |
4527 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
4528 | NULL); | |
4529 | (*_bfd_error_handler) | |
4530 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
4531 | "symbol `%s' isn't handled by %s"), input_bfd, | |
4532 | howto->name, name, __FUNCTION__); | |
4533 | bfd_set_error (bfd_error_bad_value); | |
4534 | return FALSE; | |
4535 | ||
4536 | case BFD_RELOC_AARCH64_NN: | |
4537 | if (rel->r_addend != 0) | |
4538 | { | |
4539 | if (h->root.root.string) | |
4540 | name = h->root.root.string; | |
4541 | else | |
4542 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
4543 | sym, NULL); | |
4544 | (*_bfd_error_handler) | |
4545 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
4546 | "symbol `%s' has non-zero addend: %d"), | |
4547 | input_bfd, howto->name, name, rel->r_addend); | |
4548 | bfd_set_error (bfd_error_bad_value); | |
4549 | return FALSE; | |
4550 | } | |
4551 | ||
4552 | /* Generate dynamic relocation only when there is a | |
4553 | non-GOT reference in a shared object. */ | |
4554 | if (info->shared && h->non_got_ref) | |
4555 | { | |
4556 | Elf_Internal_Rela outrel; | |
4557 | asection *sreloc; | |
4558 | ||
4559 | /* Need a dynamic relocation to get the real function | |
4560 | address. */ | |
4561 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
4562 | info, | |
4563 | input_section, | |
4564 | rel->r_offset); | |
4565 | if (outrel.r_offset == (bfd_vma) -1 | |
4566 | || outrel.r_offset == (bfd_vma) -2) | |
4567 | abort (); | |
4568 | ||
4569 | outrel.r_offset += (input_section->output_section->vma | |
4570 | + input_section->output_offset); | |
4571 | ||
4572 | if (h->dynindx == -1 | |
4573 | || h->forced_local | |
4574 | || info->executable) | |
4575 | { | |
4576 | /* This symbol is resolved locally. */ | |
4577 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
4578 | outrel.r_addend = (h->root.u.def.value | |
4579 | + h->root.u.def.section->output_section->vma | |
4580 | + h->root.u.def.section->output_offset); | |
4581 | } | |
4582 | else | |
4583 | { | |
4584 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); | |
4585 | outrel.r_addend = 0; | |
4586 | } | |
4587 | ||
4588 | sreloc = globals->root.irelifunc; | |
4589 | elf_append_rela (output_bfd, sreloc, &outrel); | |
4590 | ||
4591 | /* If this reloc is against an external symbol, we | |
4592 | do not want to fiddle with the addend. Otherwise, | |
4593 | we need to include the symbol value so that it | |
4594 | becomes an addend for the dynamic reloc. For an | |
4595 | internal symbol, we have updated addend. */ | |
4596 | return bfd_reloc_ok; | |
4597 | } | |
4598 | /* FALLTHROUGH */ | |
1419bbe5 | 4599 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 4600 | case BFD_RELOC_AARCH64_JUMP26: |
1419bbe5 WN |
4601 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
4602 | signed_addend, | |
4603 | weak_undef_p); | |
4604 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, | |
4605 | howto, value); | |
1419bbe5 WN |
4606 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
4607 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
ce336788 | 4608 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 4609 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 4610 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
1419bbe5 WN |
4611 | base_got = globals->root.sgot; |
4612 | off = h->got.offset; | |
4613 | ||
4614 | if (base_got == NULL) | |
4615 | abort (); | |
4616 | ||
4617 | if (off == (bfd_vma) -1) | |
4618 | { | |
4619 | bfd_vma plt_index; | |
4620 | ||
4621 | /* We can't use h->got.offset here to save state, or | |
4622 | even just remember the offset, as finish_dynamic_symbol | |
4623 | would use that as offset into .got. */ | |
4624 | ||
4625 | if (globals->root.splt != NULL) | |
4626 | { | |
b1ee0cc4 WN |
4627 | plt_index = ((h->plt.offset - globals->plt_header_size) / |
4628 | globals->plt_entry_size); | |
1419bbe5 WN |
4629 | off = (plt_index + 3) * GOT_ENTRY_SIZE; |
4630 | base_got = globals->root.sgotplt; | |
4631 | } | |
4632 | else | |
4633 | { | |
4634 | plt_index = h->plt.offset / globals->plt_entry_size; | |
4635 | off = plt_index * GOT_ENTRY_SIZE; | |
4636 | base_got = globals->root.igotplt; | |
4637 | } | |
4638 | ||
4639 | if (h->dynindx == -1 | |
4640 | || h->forced_local | |
4641 | || info->symbolic) | |
4642 | { | |
4643 | /* This references the local definition. We must | |
4644 | initialize this entry in the global offset table. | |
4645 | Since the offset must always be a multiple of 8, | |
4646 | we use the least significant bit to record | |
4647 | whether we have initialized it already. | |
4648 | ||
4649 | When doing a dynamic link, we create a .rela.got | |
4650 | relocation entry to initialize the value. This | |
4651 | is done in the finish_dynamic_symbol routine. */ | |
4652 | if ((off & 1) != 0) | |
4653 | off &= ~1; | |
4654 | else | |
4655 | { | |
4656 | bfd_put_NN (output_bfd, value, | |
4657 | base_got->contents + off); | |
4658 | /* Note that this is harmless as -1 | 1 still is -1. */ | |
4659 | h->got.offset |= 1; | |
4660 | } | |
4661 | } | |
4662 | value = (base_got->output_section->vma | |
4663 | + base_got->output_offset + off); | |
4664 | } | |
4665 | else | |
4666 | value = aarch64_calculate_got_entry_vma (h, globals, info, | |
4667 | value, output_bfd, | |
4668 | unresolved_reloc_p); | |
99ad26cb JW |
4669 | if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15) |
4670 | addend = (globals->root.sgot->output_section->vma | |
4671 | + globals->root.sgot->output_offset); | |
1419bbe5 | 4672 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
99ad26cb | 4673 | addend, weak_undef_p); |
1419bbe5 | 4674 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value); |
1419bbe5 | 4675 | case BFD_RELOC_AARCH64_ADD_LO12: |
ce336788 | 4676 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: |
1419bbe5 WN |
4677 | break; |
4678 | } | |
4679 | } | |
4680 | ||
a6bb11b2 | 4681 | switch (bfd_r_type) |
a06ea964 | 4682 | { |
a6bb11b2 YZ |
4683 | case BFD_RELOC_AARCH64_NONE: |
4684 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
a06ea964 NC |
4685 | *unresolved_reloc_p = FALSE; |
4686 | return bfd_reloc_ok; | |
4687 | ||
a6bb11b2 | 4688 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
4689 | |
4690 | /* When generating a shared object or relocatable executable, these | |
4691 | relocations are copied into the output file to be resolved at | |
4692 | run time. */ | |
4693 | if (((info->shared == TRUE) || globals->root.is_relocatable_executable) | |
4694 | && (input_section->flags & SEC_ALLOC) | |
4695 | && (h == NULL | |
4696 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
4697 | || h->root.type != bfd_link_hash_undefweak)) | |
4698 | { | |
4699 | Elf_Internal_Rela outrel; | |
4700 | bfd_byte *loc; | |
4701 | bfd_boolean skip, relocate; | |
4702 | asection *sreloc; | |
4703 | ||
4704 | *unresolved_reloc_p = FALSE; | |
4705 | ||
a06ea964 NC |
4706 | skip = FALSE; |
4707 | relocate = FALSE; | |
4708 | ||
4709 | outrel.r_addend = signed_addend; | |
4710 | outrel.r_offset = | |
4711 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
4712 | rel->r_offset); | |
4713 | if (outrel.r_offset == (bfd_vma) - 1) | |
4714 | skip = TRUE; | |
4715 | else if (outrel.r_offset == (bfd_vma) - 2) | |
4716 | { | |
4717 | skip = TRUE; | |
4718 | relocate = TRUE; | |
4719 | } | |
4720 | ||
4721 | outrel.r_offset += (input_section->output_section->vma | |
4722 | + input_section->output_offset); | |
4723 | ||
4724 | if (skip) | |
4725 | memset (&outrel, 0, sizeof outrel); | |
4726 | else if (h != NULL | |
4727 | && h->dynindx != -1 | |
0941db69 | 4728 | && (!info->shared || !SYMBOLIC_BIND (info, h) || !h->def_regular)) |
cec5225b | 4729 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); |
a06ea964 NC |
4730 | else |
4731 | { | |
4732 | int symbol; | |
4733 | ||
4734 | /* On SVR4-ish systems, the dynamic loader cannot | |
4735 | relocate the text and data segments independently, | |
4736 | so the symbol does not matter. */ | |
4737 | symbol = 0; | |
a6bb11b2 | 4738 | outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE)); |
a06ea964 NC |
4739 | outrel.r_addend += value; |
4740 | } | |
4741 | ||
1419bbe5 WN |
4742 | sreloc = elf_section_data (input_section)->sreloc; |
4743 | if (sreloc == NULL || sreloc->contents == NULL) | |
4744 | return bfd_reloc_notsupported; | |
4745 | ||
4746 | loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals); | |
cec5225b | 4747 | bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc); |
a06ea964 | 4748 | |
1419bbe5 | 4749 | if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size) |
a06ea964 NC |
4750 | { |
4751 | /* Sanity to check that we have previously allocated | |
4752 | sufficient space in the relocation section for the | |
4753 | number of relocations we actually want to emit. */ | |
4754 | abort (); | |
4755 | } | |
4756 | ||
4757 | /* If this reloc is against an external symbol, we do not want to | |
4758 | fiddle with the addend. Otherwise, we need to include the symbol | |
4759 | value so that it becomes an addend for the dynamic reloc. */ | |
4760 | if (!relocate) | |
4761 | return bfd_reloc_ok; | |
4762 | ||
4763 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
4764 | contents, rel->r_offset, value, | |
4765 | signed_addend); | |
4766 | } | |
4767 | else | |
4768 | value += signed_addend; | |
4769 | break; | |
4770 | ||
a6bb11b2 | 4771 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 4772 | case BFD_RELOC_AARCH64_JUMP26: |
a06ea964 NC |
4773 | { |
4774 | asection *splt = globals->root.splt; | |
4775 | bfd_boolean via_plt_p = | |
4776 | splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1; | |
4777 | ||
4778 | /* A call to an undefined weak symbol is converted to a jump to | |
4779 | the next instruction unless a PLT entry will be created. | |
4780 | The jump to the next instruction is optimized as a NOP. | |
4781 | Do the same for local undefined symbols. */ | |
4782 | if (weak_undef_p && ! via_plt_p) | |
4783 | { | |
4784 | bfd_putl32 (INSN_NOP, hit_data); | |
4785 | return bfd_reloc_ok; | |
4786 | } | |
4787 | ||
4788 | /* If the call goes through a PLT entry, make sure to | |
4789 | check distance to the right destination address. */ | |
4790 | if (via_plt_p) | |
4791 | { | |
4792 | value = (splt->output_section->vma | |
4793 | + splt->output_offset + h->plt.offset); | |
4794 | *unresolved_reloc_p = FALSE; | |
4795 | } | |
4796 | ||
4797 | /* If the target symbol is global and marked as a function the | |
4798 | relocation applies a function call or a tail call. In this | |
4799 | situation we can veneer out of range branches. The veneers | |
4800 | use IP0 and IP1 hence cannot be used arbitrary out of range | |
4801 | branches that occur within the body of a function. */ | |
4802 | if (h && h->type == STT_FUNC) | |
4803 | { | |
4804 | /* Check if a stub has to be inserted because the destination | |
4805 | is too far away. */ | |
4806 | if (! aarch64_valid_branch_p (value, place)) | |
4807 | { | |
4808 | /* The target is out of reach, so redirect the branch to | |
4809 | the local stub for this function. */ | |
cec5225b YZ |
4810 | struct elf_aarch64_stub_hash_entry *stub_entry; |
4811 | stub_entry = elfNN_aarch64_get_stub_entry (input_section, | |
a06ea964 NC |
4812 | sym_sec, h, |
4813 | rel, globals); | |
4814 | if (stub_entry != NULL) | |
4815 | value = (stub_entry->stub_offset | |
4816 | + stub_entry->stub_sec->output_offset | |
4817 | + stub_entry->stub_sec->output_section->vma); | |
4818 | } | |
4819 | } | |
4820 | } | |
caed7120 YZ |
4821 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
4822 | signed_addend, weak_undef_p); | |
a06ea964 NC |
4823 | break; |
4824 | ||
dcbd20eb JW |
4825 | case BFD_RELOC_AARCH64_16_PCREL: |
4826 | case BFD_RELOC_AARCH64_32_PCREL: | |
4827 | case BFD_RELOC_AARCH64_64_PCREL: | |
ce336788 JW |
4828 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
4829 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
4830 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
4831 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
dcbd20eb JW |
4832 | if (info->shared |
4833 | && (input_section->flags & SEC_ALLOC) != 0 | |
4834 | && (input_section->flags & SEC_READONLY) != 0 | |
4835 | && h != NULL | |
4836 | && !h->def_regular) | |
4837 | { | |
4838 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
4839 | ||
4840 | (*_bfd_error_handler) | |
4841 | (_("%B: relocation %s against external symbol `%s' can not be used" | |
4842 | " when making a shared object; recompile with -fPIC"), | |
4843 | input_bfd, elfNN_aarch64_howto_table[howto_index].name, | |
4844 | h->root.root.string); | |
4845 | bfd_set_error (bfd_error_bad_value); | |
4846 | return FALSE; | |
4847 | } | |
4848 | ||
a6bb11b2 YZ |
4849 | case BFD_RELOC_AARCH64_16: |
4850 | #if ARCH_SIZE == 64 | |
4851 | case BFD_RELOC_AARCH64_32: | |
4852 | #endif | |
4853 | case BFD_RELOC_AARCH64_ADD_LO12: | |
a6bb11b2 | 4854 | case BFD_RELOC_AARCH64_BRANCH19: |
ce336788 | 4855 | case BFD_RELOC_AARCH64_LDST128_LO12: |
a6bb11b2 YZ |
4856 | case BFD_RELOC_AARCH64_LDST16_LO12: |
4857 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
4858 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
ce336788 | 4859 | case BFD_RELOC_AARCH64_LDST8_LO12: |
a6bb11b2 YZ |
4860 | case BFD_RELOC_AARCH64_MOVW_G0: |
4861 | case BFD_RELOC_AARCH64_MOVW_G0_NC: | |
ce336788 | 4862 | case BFD_RELOC_AARCH64_MOVW_G0_S: |
a6bb11b2 YZ |
4863 | case BFD_RELOC_AARCH64_MOVW_G1: |
4864 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
ce336788 | 4865 | case BFD_RELOC_AARCH64_MOVW_G1_S: |
a6bb11b2 YZ |
4866 | case BFD_RELOC_AARCH64_MOVW_G2: |
4867 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
ce336788 | 4868 | case BFD_RELOC_AARCH64_MOVW_G2_S: |
a6bb11b2 | 4869 | case BFD_RELOC_AARCH64_MOVW_G3: |
a6bb11b2 | 4870 | case BFD_RELOC_AARCH64_TSTBR14: |
caed7120 YZ |
4871 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
4872 | signed_addend, weak_undef_p); | |
a06ea964 NC |
4873 | break; |
4874 | ||
a6bb11b2 YZ |
4875 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
4876 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
ce336788 | 4877 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 4878 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 4879 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
a06ea964 NC |
4880 | if (globals->root.sgot == NULL) |
4881 | BFD_ASSERT (h != NULL); | |
4882 | ||
4883 | if (h != NULL) | |
4884 | { | |
99ad26cb | 4885 | bfd_vma addend = 0; |
a06ea964 NC |
4886 | value = aarch64_calculate_got_entry_vma (h, globals, info, value, |
4887 | output_bfd, | |
4888 | unresolved_reloc_p); | |
99ad26cb JW |
4889 | if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15) |
4890 | addend = (globals->root.sgot->output_section->vma | |
4891 | + globals->root.sgot->output_offset); | |
caed7120 | 4892 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
99ad26cb | 4893 | addend, weak_undef_p); |
a06ea964 | 4894 | } |
b53b1bed JW |
4895 | else |
4896 | { | |
99ad26cb | 4897 | bfd_vma addend = 0; |
b53b1bed JW |
4898 | struct elf_aarch64_local_symbol *locals |
4899 | = elf_aarch64_locals (input_bfd); | |
4900 | ||
4901 | if (locals == NULL) | |
4902 | { | |
4903 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
4904 | (*_bfd_error_handler) | |
4905 | (_("%B: Local symbol descriptor table be NULL when applying " | |
4906 | "relocation %s against local symbol"), | |
4907 | input_bfd, elfNN_aarch64_howto_table[howto_index].name); | |
4908 | abort (); | |
4909 | } | |
4910 | ||
4911 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
4912 | base_got = globals->root.sgot; | |
4913 | bfd_vma got_entry_addr = (base_got->output_section->vma | |
4914 | + base_got->output_offset + off); | |
4915 | ||
4916 | if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
4917 | { | |
4918 | bfd_put_64 (output_bfd, value, base_got->contents + off); | |
4919 | ||
4920 | if (info->shared) | |
4921 | { | |
4922 | asection *s; | |
4923 | Elf_Internal_Rela outrel; | |
4924 | ||
4925 | /* For local symbol, we have done absolute relocation in static | |
4926 | linking stageh. While for share library, we need to update | |
4927 | the content of GOT entry according to the share objects | |
4928 | loading base address. So we need to generate a | |
4929 | R_AARCH64_RELATIVE reloc for dynamic linker. */ | |
4930 | s = globals->root.srelgot; | |
4931 | if (s == NULL) | |
4932 | abort (); | |
4933 | ||
4934 | outrel.r_offset = got_entry_addr; | |
4935 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); | |
4936 | outrel.r_addend = value; | |
4937 | elf_append_rela (output_bfd, s, &outrel); | |
4938 | } | |
4939 | ||
4940 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
4941 | } | |
4942 | ||
4943 | /* Update the relocation value to GOT entry addr as we have transformed | |
4944 | the direct data access into indirect data access through GOT. */ | |
4945 | value = got_entry_addr; | |
99ad26cb JW |
4946 | |
4947 | if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15) | |
4948 | addend = base_got->output_section->vma + base_got->output_offset; | |
4949 | ||
4950 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, | |
4951 | addend, weak_undef_p); | |
b53b1bed JW |
4952 | } |
4953 | ||
a06ea964 NC |
4954 | break; |
4955 | ||
ce336788 | 4956 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 4957 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 4958 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 4959 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 4960 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 4961 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 4962 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
a06ea964 NC |
4963 | if (globals->root.sgot == NULL) |
4964 | return bfd_reloc_notsupported; | |
4965 | ||
4966 | value = (symbol_got_offset (input_bfd, h, r_symndx) | |
4967 | + globals->root.sgot->output_section->vma | |
f44a1f8e | 4968 | + globals->root.sgot->output_offset); |
a06ea964 | 4969 | |
caed7120 YZ |
4970 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
4971 | 0, weak_undef_p); | |
a06ea964 NC |
4972 | *unresolved_reloc_p = FALSE; |
4973 | break; | |
4974 | ||
a6bb11b2 YZ |
4975 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
4976 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: | |
4977 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: | |
4978 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: | |
4979 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
4980 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: | |
4981 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
4982 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
caed7120 YZ |
4983 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
4984 | signed_addend - tpoff_base (info), | |
4985 | weak_undef_p); | |
a06ea964 NC |
4986 | *unresolved_reloc_p = FALSE; |
4987 | break; | |
4988 | ||
7bcccb57 MS |
4989 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
4990 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: | |
a6bb11b2 | 4991 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 4992 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 4993 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
7bcccb57 | 4994 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: |
a6bb11b2 | 4995 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
1ada945d | 4996 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
4997 | if (globals->root.sgot == NULL) |
4998 | return bfd_reloc_notsupported; | |
a06ea964 NC |
4999 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) |
5000 | + globals->root.sgotplt->output_section->vma | |
f44a1f8e | 5001 | + globals->root.sgotplt->output_offset |
a06ea964 NC |
5002 | + globals->sgotplt_jump_table_size); |
5003 | ||
caed7120 YZ |
5004 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5005 | 0, weak_undef_p); | |
a06ea964 NC |
5006 | *unresolved_reloc_p = FALSE; |
5007 | break; | |
5008 | ||
5009 | default: | |
5010 | return bfd_reloc_notsupported; | |
5011 | } | |
5012 | ||
5013 | if (saved_addend) | |
5014 | *saved_addend = value; | |
5015 | ||
5016 | /* Only apply the final relocation in a sequence. */ | |
5017 | if (save_addend) | |
5018 | return bfd_reloc_continue; | |
5019 | ||
caed7120 YZ |
5020 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, |
5021 | howto, value); | |
a06ea964 NC |
5022 | } |
5023 | ||
5024 | /* Handle TLS relaxations. Relaxing is possible for symbols that use | |
5025 | R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static | |
5026 | link. | |
5027 | ||
5028 | Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller | |
5029 | is to then call final_link_relocate. Return other values in the | |
5030 | case of error. */ | |
5031 | ||
5032 | static bfd_reloc_status_type | |
cec5225b | 5033 | elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals, |
a06ea964 NC |
5034 | bfd *input_bfd, bfd_byte *contents, |
5035 | Elf_Internal_Rela *rel, struct elf_link_hash_entry *h) | |
5036 | { | |
5037 | bfd_boolean is_local = h == NULL; | |
cec5225b | 5038 | unsigned int r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
5039 | unsigned long insn; |
5040 | ||
5041 | BFD_ASSERT (globals && input_bfd && contents && rel); | |
5042 | ||
a6bb11b2 | 5043 | switch (elfNN_aarch64_bfd_reloc_from_type (r_type)) |
a06ea964 | 5044 | { |
a6bb11b2 | 5045 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 5046 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a06ea964 NC |
5047 | if (is_local) |
5048 | { | |
5049 | /* GD->LE relaxation: | |
5050 | adrp x0, :tlsgd:var => movz x0, :tprel_g1:var | |
5051 | or | |
5052 | adrp x0, :tlsdesc:var => movz x0, :tprel_g1:var | |
5053 | */ | |
5054 | bfd_putl32 (0xd2a00000, contents + rel->r_offset); | |
5055 | return bfd_reloc_continue; | |
5056 | } | |
5057 | else | |
5058 | { | |
5059 | /* GD->IE relaxation: | |
5060 | adrp x0, :tlsgd:var => adrp x0, :gottprel:var | |
5061 | or | |
5062 | adrp x0, :tlsdesc:var => adrp x0, :gottprel:var | |
5063 | */ | |
a06ea964 NC |
5064 | return bfd_reloc_continue; |
5065 | } | |
5066 | ||
389b8029 MS |
5067 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
5068 | BFD_ASSERT (0); | |
5069 | break; | |
5070 | ||
1ada945d MS |
5071 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
5072 | if (is_local) | |
5073 | { | |
5074 | /* Tiny TLSDESC->LE relaxation: | |
5075 | ldr x1, :tlsdesc:var => movz x0, #:tprel_g1:var | |
5076 | adr x0, :tlsdesc:var => movk x0, #:tprel_g0_nc:var | |
5077 | .tlsdesccall var | |
5078 | blr x1 => nop | |
5079 | */ | |
5080 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); | |
5081 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
5082 | ||
5083 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5084 | AARCH64_R (TLSLE_MOVW_TPREL_G0_NC)); | |
5085 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5086 | ||
5087 | bfd_putl32 (0xd2a00000, contents + rel->r_offset); | |
5088 | bfd_putl32 (0xf2800000, contents + rel->r_offset + 4); | |
5089 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); | |
5090 | return bfd_reloc_continue; | |
5091 | } | |
5092 | else | |
5093 | { | |
5094 | /* Tiny TLSDESC->IE relaxation: | |
5095 | ldr x1, :tlsdesc:var => ldr x0, :gottprel:var | |
5096 | adr x0, :tlsdesc:var => nop | |
5097 | .tlsdesccall var | |
5098 | blr x1 => nop | |
5099 | */ | |
5100 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); | |
5101 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
5102 | ||
5103 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5104 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5105 | ||
5106 | bfd_putl32 (0x58000000, contents + rel->r_offset); | |
5107 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4); | |
5108 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); | |
5109 | return bfd_reloc_continue; | |
5110 | } | |
5111 | ||
3c12b054 MS |
5112 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
5113 | if (is_local) | |
5114 | { | |
5115 | /* Tiny GD->LE relaxation: | |
5116 | adr x0, :tlsgd:var => mrs x1, tpidr_el0 | |
5117 | bl __tls_get_addr => add x0, x1, #:tprel_hi12:x, lsl #12 | |
5118 | nop => add x0, x0, #:tprel_lo12_nc:x | |
5119 | */ | |
5120 | ||
5121 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
5122 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
5123 | ||
5124 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0); | |
5125 | bfd_putl32 (0x91400020, contents + rel->r_offset + 4); | |
5126 | bfd_putl32 (0x91000000, contents + rel->r_offset + 8); | |
5127 | ||
5128 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5129 | AARCH64_R (TLSLE_ADD_TPREL_LO12_NC)); | |
5130 | rel[1].r_offset = rel->r_offset + 8; | |
5131 | ||
5132 | /* Move the current relocation to the second instruction in | |
5133 | the sequence. */ | |
5134 | rel->r_offset += 4; | |
5135 | rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5136 | AARCH64_R (TLSLE_ADD_TPREL_HI12)); | |
5137 | return bfd_reloc_continue; | |
5138 | } | |
5139 | else | |
5140 | { | |
5141 | /* Tiny GD->IE relaxation: | |
5142 | adr x0, :tlsgd:var => ldr x0, :gottprel:var | |
5143 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
5144 | nop => add x0, x0, x1 | |
5145 | */ | |
5146 | ||
5147 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
5148 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
5149 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5150 | ||
5151 | bfd_putl32 (0x58000000, contents + rel->r_offset); | |
5152 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); | |
5153 | bfd_putl32 (0x8b000020, contents + rel->r_offset + 8); | |
5154 | return bfd_reloc_continue; | |
5155 | } | |
5156 | ||
043bf05a MS |
5157 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
5158 | return bfd_reloc_continue; | |
5159 | ||
a6bb11b2 | 5160 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
a06ea964 NC |
5161 | if (is_local) |
5162 | { | |
5163 | /* GD->LE relaxation: | |
5164 | ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var | |
5165 | */ | |
5166 | bfd_putl32 (0xf2800000, contents + rel->r_offset); | |
5167 | return bfd_reloc_continue; | |
5168 | } | |
5169 | else | |
5170 | { | |
5171 | /* GD->IE relaxation: | |
5172 | ldr xd, [x0, #:tlsdesc_lo12:var] => ldr x0, [x0, #:gottprel_lo12:var] | |
5173 | */ | |
5174 | insn = bfd_getl32 (contents + rel->r_offset); | |
fa85fb9a | 5175 | insn &= 0xffffffe0; |
a06ea964 NC |
5176 | bfd_putl32 (insn, contents + rel->r_offset); |
5177 | return bfd_reloc_continue; | |
5178 | } | |
5179 | ||
a6bb11b2 | 5180 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a06ea964 NC |
5181 | if (is_local) |
5182 | { | |
5183 | /* GD->LE relaxation | |
5184 | add x0, #:tlsgd_lo12:var => movk x0, :tprel_g0_nc:var | |
5185 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
5186 | nop => add x0, x1, x0 | |
5187 | */ | |
5188 | ||
5189 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
5190 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
cec5225b | 5191 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 NC |
5192 | |
5193 | bfd_putl32 (0xf2800000, contents + rel->r_offset); | |
5194 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); | |
5195 | bfd_putl32 (0x8b000020, contents + rel->r_offset + 8); | |
5196 | return bfd_reloc_continue; | |
5197 | } | |
5198 | else | |
5199 | { | |
5200 | /* GD->IE relaxation | |
5201 | ADD x0, #:tlsgd_lo12:var => ldr x0, [x0, #:gottprel_lo12:var] | |
5202 | BL __tls_get_addr => mrs x1, tpidr_el0 | |
5203 | R_AARCH64_CALL26 | |
5204 | NOP => add x0, x1, x0 | |
5205 | */ | |
5206 | ||
a6bb11b2 | 5207 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); |
a06ea964 NC |
5208 | |
5209 | /* Remove the relocation on the BL instruction. */ | |
cec5225b | 5210 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 NC |
5211 | |
5212 | bfd_putl32 (0xf9400000, contents + rel->r_offset); | |
5213 | ||
5214 | /* We choose to fixup the BL and NOP instructions using the | |
5215 | offset from the second relocation to allow flexibility in | |
5216 | scheduling instructions between the ADD and BL. */ | |
5217 | bfd_putl32 (0xd53bd041, contents + rel[1].r_offset); | |
5218 | bfd_putl32 (0x8b000020, contents + rel[1].r_offset + 4); | |
5219 | return bfd_reloc_continue; | |
5220 | } | |
5221 | ||
a6bb11b2 YZ |
5222 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
5223 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
a06ea964 NC |
5224 | /* GD->IE/LE relaxation: |
5225 | add x0, x0, #:tlsdesc_lo12:var => nop | |
5226 | blr xd => nop | |
5227 | */ | |
5228 | bfd_putl32 (INSN_NOP, contents + rel->r_offset); | |
5229 | return bfd_reloc_ok; | |
5230 | ||
a6bb11b2 | 5231 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a06ea964 NC |
5232 | /* IE->LE relaxation: |
5233 | adrp xd, :gottprel:var => movz xd, :tprel_g1:var | |
5234 | */ | |
5235 | if (is_local) | |
5236 | { | |
5237 | insn = bfd_getl32 (contents + rel->r_offset); | |
5238 | bfd_putl32 (0xd2a00000 | (insn & 0x1f), contents + rel->r_offset); | |
5239 | } | |
5240 | return bfd_reloc_continue; | |
5241 | ||
a6bb11b2 | 5242 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: |
a06ea964 NC |
5243 | /* IE->LE relaxation: |
5244 | ldr xd, [xm, #:gottprel_lo12:var] => movk xd, :tprel_g0_nc:var | |
5245 | */ | |
5246 | if (is_local) | |
5247 | { | |
5248 | insn = bfd_getl32 (contents + rel->r_offset); | |
5249 | bfd_putl32 (0xf2800000 | (insn & 0x1f), contents + rel->r_offset); | |
5250 | } | |
5251 | return bfd_reloc_continue; | |
5252 | ||
5253 | default: | |
5254 | return bfd_reloc_continue; | |
5255 | } | |
5256 | ||
5257 | return bfd_reloc_ok; | |
5258 | } | |
5259 | ||
5260 | /* Relocate an AArch64 ELF section. */ | |
5261 | ||
5262 | static bfd_boolean | |
cec5225b | 5263 | elfNN_aarch64_relocate_section (bfd *output_bfd, |
a06ea964 NC |
5264 | struct bfd_link_info *info, |
5265 | bfd *input_bfd, | |
5266 | asection *input_section, | |
5267 | bfd_byte *contents, | |
5268 | Elf_Internal_Rela *relocs, | |
5269 | Elf_Internal_Sym *local_syms, | |
5270 | asection **local_sections) | |
5271 | { | |
5272 | Elf_Internal_Shdr *symtab_hdr; | |
5273 | struct elf_link_hash_entry **sym_hashes; | |
5274 | Elf_Internal_Rela *rel; | |
5275 | Elf_Internal_Rela *relend; | |
5276 | const char *name; | |
cec5225b | 5277 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 NC |
5278 | bfd_boolean save_addend = FALSE; |
5279 | bfd_vma addend = 0; | |
5280 | ||
cec5225b | 5281 | globals = elf_aarch64_hash_table (info); |
a06ea964 NC |
5282 | |
5283 | symtab_hdr = &elf_symtab_hdr (input_bfd); | |
5284 | sym_hashes = elf_sym_hashes (input_bfd); | |
5285 | ||
5286 | rel = relocs; | |
5287 | relend = relocs + input_section->reloc_count; | |
5288 | for (; rel < relend; rel++) | |
5289 | { | |
5290 | unsigned int r_type; | |
a6bb11b2 YZ |
5291 | bfd_reloc_code_real_type bfd_r_type; |
5292 | bfd_reloc_code_real_type relaxed_bfd_r_type; | |
a06ea964 NC |
5293 | reloc_howto_type *howto; |
5294 | unsigned long r_symndx; | |
5295 | Elf_Internal_Sym *sym; | |
5296 | asection *sec; | |
5297 | struct elf_link_hash_entry *h; | |
5298 | bfd_vma relocation; | |
5299 | bfd_reloc_status_type r; | |
5300 | arelent bfd_reloc; | |
5301 | char sym_type; | |
5302 | bfd_boolean unresolved_reloc = FALSE; | |
5303 | char *error_message = NULL; | |
5304 | ||
cec5225b YZ |
5305 | r_symndx = ELFNN_R_SYM (rel->r_info); |
5306 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 | 5307 | |
cec5225b | 5308 | bfd_reloc.howto = elfNN_aarch64_howto_from_type (r_type); |
a06ea964 NC |
5309 | howto = bfd_reloc.howto; |
5310 | ||
7fcfd62d NC |
5311 | if (howto == NULL) |
5312 | { | |
5313 | (*_bfd_error_handler) | |
5314 | (_("%B: unrecognized relocation (0x%x) in section `%A'"), | |
5315 | input_bfd, input_section, r_type); | |
5316 | return FALSE; | |
5317 | } | |
a6bb11b2 | 5318 | bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto); |
7fcfd62d | 5319 | |
a06ea964 NC |
5320 | h = NULL; |
5321 | sym = NULL; | |
5322 | sec = NULL; | |
5323 | ||
5324 | if (r_symndx < symtab_hdr->sh_info) | |
5325 | { | |
5326 | sym = local_syms + r_symndx; | |
cec5225b | 5327 | sym_type = ELFNN_ST_TYPE (sym->st_info); |
a06ea964 NC |
5328 | sec = local_sections[r_symndx]; |
5329 | ||
5330 | /* An object file might have a reference to a local | |
5331 | undefined symbol. This is a daft object file, but we | |
5332 | should at least do something about it. */ | |
5333 | if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL | |
5334 | && bfd_is_und_section (sec) | |
5335 | && ELF_ST_BIND (sym->st_info) != STB_WEAK) | |
5336 | { | |
5337 | if (!info->callbacks->undefined_symbol | |
5338 | (info, bfd_elf_string_from_elf_section | |
5339 | (input_bfd, symtab_hdr->sh_link, sym->st_name), | |
5340 | input_bfd, input_section, rel->r_offset, TRUE)) | |
5341 | return FALSE; | |
5342 | } | |
5343 | ||
a06ea964 | 5344 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
1419bbe5 WN |
5345 | |
5346 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
5347 | if (!info->relocatable | |
5348 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
5349 | { | |
5350 | h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd, | |
5351 | rel, FALSE); | |
5352 | if (h == NULL) | |
5353 | abort (); | |
5354 | ||
5355 | /* Set STT_GNU_IFUNC symbol value. */ | |
5356 | h->root.u.def.value = sym->st_value; | |
5357 | h->root.u.def.section = sec; | |
5358 | } | |
a06ea964 NC |
5359 | } |
5360 | else | |
5361 | { | |
62d887d4 | 5362 | bfd_boolean warned, ignored; |
a06ea964 NC |
5363 | |
5364 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
5365 | r_symndx, symtab_hdr, sym_hashes, | |
5366 | h, sec, relocation, | |
62d887d4 | 5367 | unresolved_reloc, warned, ignored); |
a06ea964 NC |
5368 | |
5369 | sym_type = h->type; | |
5370 | } | |
5371 | ||
5372 | if (sec != NULL && discarded_section (sec)) | |
5373 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
5374 | rel, 1, relend, howto, 0, contents); | |
5375 | ||
5376 | if (info->relocatable) | |
2e0488d3 | 5377 | continue; |
a06ea964 NC |
5378 | |
5379 | if (h != NULL) | |
5380 | name = h->root.root.string; | |
5381 | else | |
5382 | { | |
5383 | name = (bfd_elf_string_from_elf_section | |
5384 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
5385 | if (name == NULL || *name == '\0') | |
5386 | name = bfd_section_name (input_bfd, sec); | |
5387 | } | |
5388 | ||
5389 | if (r_symndx != 0 | |
5390 | && r_type != R_AARCH64_NONE | |
5391 | && r_type != R_AARCH64_NULL | |
5392 | && (h == NULL | |
5393 | || h->root.type == bfd_link_hash_defined | |
5394 | || h->root.type == bfd_link_hash_defweak) | |
a6bb11b2 | 5395 | && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS)) |
a06ea964 NC |
5396 | { |
5397 | (*_bfd_error_handler) | |
5398 | ((sym_type == STT_TLS | |
5399 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") | |
5400 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")), | |
5401 | input_bfd, | |
5402 | input_section, (long) rel->r_offset, howto->name, name); | |
5403 | } | |
5404 | ||
a06ea964 NC |
5405 | /* We relax only if we can see that there can be a valid transition |
5406 | from a reloc type to another. | |
cec5225b | 5407 | We call elfNN_aarch64_final_link_relocate unless we're completely |
a06ea964 NC |
5408 | done, i.e., the relaxation produced the final output we want. */ |
5409 | ||
a6bb11b2 YZ |
5410 | relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, |
5411 | h, r_symndx); | |
5412 | if (relaxed_bfd_r_type != bfd_r_type) | |
a06ea964 | 5413 | { |
a6bb11b2 YZ |
5414 | bfd_r_type = relaxed_bfd_r_type; |
5415 | howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type); | |
5416 | BFD_ASSERT (howto != NULL); | |
5417 | r_type = howto->type; | |
cec5225b | 5418 | r = elfNN_aarch64_tls_relax (globals, input_bfd, contents, rel, h); |
a06ea964 NC |
5419 | unresolved_reloc = 0; |
5420 | } | |
5421 | else | |
5422 | r = bfd_reloc_continue; | |
5423 | ||
5424 | /* There may be multiple consecutive relocations for the | |
5425 | same offset. In that case we are supposed to treat the | |
5426 | output of each relocation as the addend for the next. */ | |
5427 | if (rel + 1 < relend | |
5428 | && rel->r_offset == rel[1].r_offset | |
cec5225b YZ |
5429 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE |
5430 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL) | |
a06ea964 NC |
5431 | save_addend = TRUE; |
5432 | else | |
5433 | save_addend = FALSE; | |
5434 | ||
5435 | if (r == bfd_reloc_continue) | |
cec5225b | 5436 | r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd, |
a06ea964 NC |
5437 | input_section, contents, rel, |
5438 | relocation, info, sec, | |
5439 | h, &unresolved_reloc, | |
1419bbe5 | 5440 | save_addend, &addend, sym); |
a06ea964 | 5441 | |
a6bb11b2 | 5442 | switch (elfNN_aarch64_bfd_reloc_from_type (r_type)) |
a06ea964 | 5443 | { |
ce336788 | 5444 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 5445 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 5446 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a06ea964 NC |
5447 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
5448 | { | |
5449 | bfd_boolean need_relocs = FALSE; | |
5450 | bfd_byte *loc; | |
5451 | int indx; | |
5452 | bfd_vma off; | |
5453 | ||
5454 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
5455 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
5456 | ||
5457 | need_relocs = | |
5458 | (info->shared || indx != 0) && | |
5459 | (h == NULL | |
5460 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5461 | || h->root.type != bfd_link_hash_undefweak); | |
5462 | ||
5463 | BFD_ASSERT (globals->root.srelgot != NULL); | |
5464 | ||
5465 | if (need_relocs) | |
5466 | { | |
5467 | Elf_Internal_Rela rela; | |
a6bb11b2 | 5468 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD)); |
a06ea964 NC |
5469 | rela.r_addend = 0; |
5470 | rela.r_offset = globals->root.sgot->output_section->vma + | |
5471 | globals->root.sgot->output_offset + off; | |
5472 | ||
5473 | ||
5474 | loc = globals->root.srelgot->contents; | |
5475 | loc += globals->root.srelgot->reloc_count++ | |
5476 | * RELOC_SIZE (htab); | |
cec5225b | 5477 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
5478 | |
5479 | if (indx == 0) | |
5480 | { | |
cec5225b | 5481 | bfd_put_NN (output_bfd, |
a06ea964 NC |
5482 | relocation - dtpoff_base (info), |
5483 | globals->root.sgot->contents + off | |
5484 | + GOT_ENTRY_SIZE); | |
5485 | } | |
5486 | else | |
5487 | { | |
5488 | /* This TLS symbol is global. We emit a | |
5489 | relocation to fixup the tls offset at load | |
5490 | time. */ | |
5491 | rela.r_info = | |
a6bb11b2 | 5492 | ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL)); |
a06ea964 NC |
5493 | rela.r_addend = 0; |
5494 | rela.r_offset = | |
5495 | (globals->root.sgot->output_section->vma | |
5496 | + globals->root.sgot->output_offset + off | |
5497 | + GOT_ENTRY_SIZE); | |
5498 | ||
5499 | loc = globals->root.srelgot->contents; | |
5500 | loc += globals->root.srelgot->reloc_count++ | |
5501 | * RELOC_SIZE (globals); | |
cec5225b YZ |
5502 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
5503 | bfd_put_NN (output_bfd, (bfd_vma) 0, | |
a06ea964 NC |
5504 | globals->root.sgot->contents + off |
5505 | + GOT_ENTRY_SIZE); | |
5506 | } | |
5507 | } | |
5508 | else | |
5509 | { | |
cec5225b | 5510 | bfd_put_NN (output_bfd, (bfd_vma) 1, |
a06ea964 | 5511 | globals->root.sgot->contents + off); |
cec5225b | 5512 | bfd_put_NN (output_bfd, |
a06ea964 NC |
5513 | relocation - dtpoff_base (info), |
5514 | globals->root.sgot->contents + off | |
5515 | + GOT_ENTRY_SIZE); | |
5516 | } | |
5517 | ||
5518 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
5519 | } | |
5520 | break; | |
5521 | ||
a6bb11b2 YZ |
5522 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
5523 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
043bf05a | 5524 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
a06ea964 NC |
5525 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
5526 | { | |
5527 | bfd_boolean need_relocs = FALSE; | |
5528 | bfd_byte *loc; | |
5529 | int indx; | |
5530 | bfd_vma off; | |
5531 | ||
5532 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
5533 | ||
5534 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
5535 | ||
5536 | need_relocs = | |
5537 | (info->shared || indx != 0) && | |
5538 | (h == NULL | |
5539 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5540 | || h->root.type != bfd_link_hash_undefweak); | |
5541 | ||
5542 | BFD_ASSERT (globals->root.srelgot != NULL); | |
5543 | ||
5544 | if (need_relocs) | |
5545 | { | |
5546 | Elf_Internal_Rela rela; | |
5547 | ||
5548 | if (indx == 0) | |
5549 | rela.r_addend = relocation - dtpoff_base (info); | |
5550 | else | |
5551 | rela.r_addend = 0; | |
5552 | ||
a6bb11b2 | 5553 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL)); |
a06ea964 NC |
5554 | rela.r_offset = globals->root.sgot->output_section->vma + |
5555 | globals->root.sgot->output_offset + off; | |
5556 | ||
5557 | loc = globals->root.srelgot->contents; | |
5558 | loc += globals->root.srelgot->reloc_count++ | |
5559 | * RELOC_SIZE (htab); | |
5560 | ||
cec5225b | 5561 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 5562 | |
cec5225b | 5563 | bfd_put_NN (output_bfd, rela.r_addend, |
a06ea964 NC |
5564 | globals->root.sgot->contents + off); |
5565 | } | |
5566 | else | |
cec5225b | 5567 | bfd_put_NN (output_bfd, relocation - tpoff_base (info), |
a06ea964 NC |
5568 | globals->root.sgot->contents + off); |
5569 | ||
5570 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
5571 | } | |
5572 | break; | |
5573 | ||
a6bb11b2 | 5574 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
ce336788 | 5575 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: |
a6bb11b2 | 5576 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: |
a6bb11b2 YZ |
5577 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: |
5578 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
ce336788 JW |
5579 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: |
5580 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
5581 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
a06ea964 NC |
5582 | break; |
5583 | ||
7bcccb57 | 5584 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
a6bb11b2 | 5585 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 5586 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 5587 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
1ada945d | 5588 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
5589 | if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx)) |
5590 | { | |
5591 | bfd_boolean need_relocs = FALSE; | |
5592 | int indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
5593 | bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx); | |
5594 | ||
5595 | need_relocs = (h == NULL | |
5596 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5597 | || h->root.type != bfd_link_hash_undefweak); | |
5598 | ||
5599 | BFD_ASSERT (globals->root.srelgot != NULL); | |
5600 | BFD_ASSERT (globals->root.sgot != NULL); | |
5601 | ||
5602 | if (need_relocs) | |
5603 | { | |
5604 | bfd_byte *loc; | |
5605 | Elf_Internal_Rela rela; | |
a6bb11b2 YZ |
5606 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC)); |
5607 | ||
a06ea964 NC |
5608 | rela.r_addend = 0; |
5609 | rela.r_offset = (globals->root.sgotplt->output_section->vma | |
5610 | + globals->root.sgotplt->output_offset | |
5611 | + off + globals->sgotplt_jump_table_size); | |
5612 | ||
5613 | if (indx == 0) | |
5614 | rela.r_addend = relocation - dtpoff_base (info); | |
5615 | ||
5616 | /* Allocate the next available slot in the PLT reloc | |
5617 | section to hold our R_AARCH64_TLSDESC, the next | |
5618 | available slot is determined from reloc_count, | |
5619 | which we step. But note, reloc_count was | |
5620 | artifically moved down while allocating slots for | |
5621 | real PLT relocs such that all of the PLT relocs | |
5622 | will fit above the initial reloc_count and the | |
5623 | extra stuff will fit below. */ | |
5624 | loc = globals->root.srelplt->contents; | |
5625 | loc += globals->root.srelplt->reloc_count++ | |
5626 | * RELOC_SIZE (globals); | |
5627 | ||
cec5225b | 5628 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 5629 | |
cec5225b | 5630 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
5631 | globals->root.sgotplt->contents + off + |
5632 | globals->sgotplt_jump_table_size); | |
cec5225b | 5633 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
5634 | globals->root.sgotplt->contents + off + |
5635 | globals->sgotplt_jump_table_size + | |
5636 | GOT_ENTRY_SIZE); | |
5637 | } | |
5638 | ||
5639 | symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx); | |
5640 | } | |
5641 | break; | |
a6bb11b2 YZ |
5642 | default: |
5643 | break; | |
a06ea964 NC |
5644 | } |
5645 | ||
5646 | if (!save_addend) | |
5647 | addend = 0; | |
5648 | ||
5649 | ||
5650 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections | |
5651 | because such sections are not SEC_ALLOC and thus ld.so will | |
5652 | not process them. */ | |
5653 | if (unresolved_reloc | |
5654 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
5655 | && h->def_dynamic) | |
5656 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
5657 | +rel->r_offset) != (bfd_vma) - 1) | |
5658 | { | |
5659 | (*_bfd_error_handler) | |
5660 | (_ | |
5661 | ("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), | |
5662 | input_bfd, input_section, (long) rel->r_offset, howto->name, | |
5663 | h->root.root.string); | |
5664 | return FALSE; | |
5665 | } | |
5666 | ||
5667 | if (r != bfd_reloc_ok && r != bfd_reloc_continue) | |
5668 | { | |
5669 | switch (r) | |
5670 | { | |
5671 | case bfd_reloc_overflow: | |
fdc3b1b1 JW |
5672 | if (!(*info->callbacks->reloc_overflow) |
5673 | (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, | |
5674 | input_bfd, input_section, rel->r_offset)) | |
a06ea964 NC |
5675 | return FALSE; |
5676 | break; | |
5677 | ||
5678 | case bfd_reloc_undefined: | |
5679 | if (!((*info->callbacks->undefined_symbol) | |
5680 | (info, name, input_bfd, input_section, | |
5681 | rel->r_offset, TRUE))) | |
5682 | return FALSE; | |
5683 | break; | |
5684 | ||
5685 | case bfd_reloc_outofrange: | |
5686 | error_message = _("out of range"); | |
5687 | goto common_error; | |
5688 | ||
5689 | case bfd_reloc_notsupported: | |
5690 | error_message = _("unsupported relocation"); | |
5691 | goto common_error; | |
5692 | ||
5693 | case bfd_reloc_dangerous: | |
5694 | /* error_message should already be set. */ | |
5695 | goto common_error; | |
5696 | ||
5697 | default: | |
5698 | error_message = _("unknown error"); | |
5699 | /* Fall through. */ | |
5700 | ||
5701 | common_error: | |
5702 | BFD_ASSERT (error_message != NULL); | |
5703 | if (!((*info->callbacks->reloc_dangerous) | |
5704 | (info, error_message, input_bfd, input_section, | |
5705 | rel->r_offset))) | |
5706 | return FALSE; | |
5707 | break; | |
5708 | } | |
5709 | } | |
5710 | } | |
5711 | ||
5712 | return TRUE; | |
5713 | } | |
5714 | ||
5715 | /* Set the right machine number. */ | |
5716 | ||
5717 | static bfd_boolean | |
cec5225b | 5718 | elfNN_aarch64_object_p (bfd *abfd) |
a06ea964 | 5719 | { |
cec5225b YZ |
5720 | #if ARCH_SIZE == 32 |
5721 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32); | |
5722 | #else | |
a06ea964 | 5723 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64); |
cec5225b | 5724 | #endif |
a06ea964 NC |
5725 | return TRUE; |
5726 | } | |
5727 | ||
5728 | /* Function to keep AArch64 specific flags in the ELF header. */ | |
5729 | ||
5730 | static bfd_boolean | |
cec5225b | 5731 | elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags) |
a06ea964 NC |
5732 | { |
5733 | if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags) | |
5734 | { | |
5735 | } | |
5736 | else | |
5737 | { | |
5738 | elf_elfheader (abfd)->e_flags = flags; | |
5739 | elf_flags_init (abfd) = TRUE; | |
5740 | } | |
5741 | ||
5742 | return TRUE; | |
5743 | } | |
5744 | ||
a06ea964 NC |
5745 | /* Merge backend specific data from an object file to the output |
5746 | object file when linking. */ | |
5747 | ||
5748 | static bfd_boolean | |
cec5225b | 5749 | elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
a06ea964 NC |
5750 | { |
5751 | flagword out_flags; | |
5752 | flagword in_flags; | |
5753 | bfd_boolean flags_compatible = TRUE; | |
5754 | asection *sec; | |
5755 | ||
5756 | /* Check if we have the same endianess. */ | |
5757 | if (!_bfd_generic_verify_endian_match (ibfd, obfd)) | |
5758 | return FALSE; | |
5759 | ||
5760 | if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd)) | |
5761 | return TRUE; | |
5762 | ||
5763 | /* The input BFD must have had its flags initialised. */ | |
5764 | /* The following seems bogus to me -- The flags are initialized in | |
5765 | the assembler but I don't think an elf_flags_init field is | |
5766 | written into the object. */ | |
5767 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ | |
5768 | ||
5769 | in_flags = elf_elfheader (ibfd)->e_flags; | |
5770 | out_flags = elf_elfheader (obfd)->e_flags; | |
5771 | ||
5772 | if (!elf_flags_init (obfd)) | |
5773 | { | |
5774 | /* If the input is the default architecture and had the default | |
5775 | flags then do not bother setting the flags for the output | |
5776 | architecture, instead allow future merges to do this. If no | |
5777 | future merges ever set these flags then they will retain their | |
5778 | uninitialised values, which surprise surprise, correspond | |
5779 | to the default values. */ | |
5780 | if (bfd_get_arch_info (ibfd)->the_default | |
5781 | && elf_elfheader (ibfd)->e_flags == 0) | |
5782 | return TRUE; | |
5783 | ||
5784 | elf_flags_init (obfd) = TRUE; | |
5785 | elf_elfheader (obfd)->e_flags = in_flags; | |
5786 | ||
5787 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
5788 | && bfd_get_arch_info (obfd)->the_default) | |
5789 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
5790 | bfd_get_mach (ibfd)); | |
5791 | ||
5792 | return TRUE; | |
5793 | } | |
5794 | ||
5795 | /* Identical flags must be compatible. */ | |
5796 | if (in_flags == out_flags) | |
5797 | return TRUE; | |
5798 | ||
5799 | /* Check to see if the input BFD actually contains any sections. If | |
5800 | not, its flags may not have been initialised either, but it | |
5801 | cannot actually cause any incompatiblity. Do not short-circuit | |
5802 | dynamic objects; their section list may be emptied by | |
5803 | elf_link_add_object_symbols. | |
5804 | ||
5805 | Also check to see if there are no code sections in the input. | |
5806 | In this case there is no need to check for code specific flags. | |
5807 | XXX - do we need to worry about floating-point format compatability | |
5808 | in data sections ? */ | |
5809 | if (!(ibfd->flags & DYNAMIC)) | |
5810 | { | |
5811 | bfd_boolean null_input_bfd = TRUE; | |
5812 | bfd_boolean only_data_sections = TRUE; | |
5813 | ||
5814 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
5815 | { | |
5816 | if ((bfd_get_section_flags (ibfd, sec) | |
5817 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
5818 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
5819 | only_data_sections = FALSE; | |
5820 | ||
5821 | null_input_bfd = FALSE; | |
5822 | break; | |
5823 | } | |
5824 | ||
5825 | if (null_input_bfd || only_data_sections) | |
5826 | return TRUE; | |
5827 | } | |
5828 | ||
5829 | return flags_compatible; | |
5830 | } | |
5831 | ||
5832 | /* Display the flags field. */ | |
5833 | ||
5834 | static bfd_boolean | |
cec5225b | 5835 | elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr) |
a06ea964 NC |
5836 | { |
5837 | FILE *file = (FILE *) ptr; | |
5838 | unsigned long flags; | |
5839 | ||
5840 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
5841 | ||
5842 | /* Print normal ELF private data. */ | |
5843 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
5844 | ||
5845 | flags = elf_elfheader (abfd)->e_flags; | |
5846 | /* Ignore init flag - it may not be set, despite the flags field | |
5847 | containing valid data. */ | |
5848 | ||
5849 | /* xgettext:c-format */ | |
5850 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
5851 | ||
5852 | if (flags) | |
5853 | fprintf (file, _("<Unrecognised flag bits set>")); | |
5854 | ||
5855 | fputc ('\n', file); | |
5856 | ||
5857 | return TRUE; | |
5858 | } | |
5859 | ||
5860 | /* Update the got entry reference counts for the section being removed. */ | |
5861 | ||
5862 | static bfd_boolean | |
cec5225b | 5863 | elfNN_aarch64_gc_sweep_hook (bfd *abfd, |
cb8af559 NC |
5864 | struct bfd_link_info *info, |
5865 | asection *sec, | |
5866 | const Elf_Internal_Rela * relocs) | |
a06ea964 | 5867 | { |
cec5225b | 5868 | struct elf_aarch64_link_hash_table *htab; |
59c108f7 NC |
5869 | Elf_Internal_Shdr *symtab_hdr; |
5870 | struct elf_link_hash_entry **sym_hashes; | |
cb8af559 | 5871 | struct elf_aarch64_local_symbol *locals; |
59c108f7 NC |
5872 | const Elf_Internal_Rela *rel, *relend; |
5873 | ||
5874 | if (info->relocatable) | |
5875 | return TRUE; | |
5876 | ||
cec5225b | 5877 | htab = elf_aarch64_hash_table (info); |
59c108f7 NC |
5878 | |
5879 | if (htab == NULL) | |
5880 | return FALSE; | |
5881 | ||
5882 | elf_section_data (sec)->local_dynrel = NULL; | |
5883 | ||
5884 | symtab_hdr = &elf_symtab_hdr (abfd); | |
5885 | sym_hashes = elf_sym_hashes (abfd); | |
5886 | ||
cec5225b | 5887 | locals = elf_aarch64_locals (abfd); |
59c108f7 NC |
5888 | |
5889 | relend = relocs + sec->reloc_count; | |
5890 | for (rel = relocs; rel < relend; rel++) | |
5891 | { | |
5892 | unsigned long r_symndx; | |
5893 | unsigned int r_type; | |
5894 | struct elf_link_hash_entry *h = NULL; | |
5895 | ||
cec5225b | 5896 | r_symndx = ELFNN_R_SYM (rel->r_info); |
8847944f | 5897 | |
59c108f7 NC |
5898 | if (r_symndx >= symtab_hdr->sh_info) |
5899 | { | |
8847944f | 5900 | |
59c108f7 NC |
5901 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
5902 | while (h->root.type == bfd_link_hash_indirect | |
5903 | || h->root.type == bfd_link_hash_warning) | |
5904 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
59c108f7 NC |
5905 | } |
5906 | else | |
5907 | { | |
5908 | Elf_Internal_Sym *isym; | |
5909 | ||
8847944f | 5910 | /* A local symbol. */ |
59c108f7 NC |
5911 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5912 | abfd, r_symndx); | |
1419bbe5 WN |
5913 | |
5914 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
5915 | if (isym != NULL | |
5916 | && ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
5917 | { | |
5918 | h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, FALSE); | |
5919 | if (h == NULL) | |
5920 | abort (); | |
5921 | } | |
5922 | } | |
5923 | ||
5924 | if (h) | |
5925 | { | |
5926 | struct elf_aarch64_link_hash_entry *eh; | |
5927 | struct elf_dyn_relocs **pp; | |
5928 | struct elf_dyn_relocs *p; | |
5929 | ||
5930 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
5931 | ||
5932 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
5933 | if (p->sec == sec) | |
5934 | { | |
5935 | /* Everything must go for SEC. */ | |
5936 | *pp = p->next; | |
5937 | break; | |
5938 | } | |
59c108f7 NC |
5939 | } |
5940 | ||
cec5225b | 5941 | r_type = ELFNN_R_TYPE (rel->r_info); |
a6bb11b2 | 5942 | switch (aarch64_tls_transition (abfd,info, r_type, h ,r_symndx)) |
59c108f7 | 5943 | { |
a6bb11b2 | 5944 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
7bcccb57 MS |
5945 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
5946 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: | |
99ad26cb | 5947 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
7bcccb57 MS |
5948 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
5949 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: | |
5950 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
389b8029 | 5951 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
7bcccb57 MS |
5952 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
5953 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: | |
1ada945d | 5954 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a6bb11b2 | 5955 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
7bcccb57 | 5956 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 5957 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 5958 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 5959 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
7bcccb57 | 5960 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 5961 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
a6bb11b2 | 5962 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
7bcccb57 | 5963 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: |
a6bb11b2 | 5964 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: |
a6bb11b2 YZ |
5965 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: |
5966 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
7bcccb57 MS |
5967 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: |
5968 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
5969 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
a6bb11b2 | 5970 | if (h != NULL) |
59c108f7 NC |
5971 | { |
5972 | if (h->got.refcount > 0) | |
5973 | h->got.refcount -= 1; | |
1419bbe5 WN |
5974 | |
5975 | if (h->type == STT_GNU_IFUNC) | |
5976 | { | |
5977 | if (h->plt.refcount > 0) | |
5978 | h->plt.refcount -= 1; | |
5979 | } | |
59c108f7 | 5980 | } |
cb8af559 | 5981 | else if (locals != NULL) |
59c108f7 | 5982 | { |
cb8af559 NC |
5983 | if (locals[r_symndx].got_refcount > 0) |
5984 | locals[r_symndx].got_refcount -= 1; | |
59c108f7 NC |
5985 | } |
5986 | break; | |
5987 | ||
a6bb11b2 YZ |
5988 | case BFD_RELOC_AARCH64_CALL26: |
5989 | case BFD_RELOC_AARCH64_JUMP26: | |
5990 | /* If this is a local symbol then we resolve it | |
5991 | directly without creating a PLT entry. */ | |
59c108f7 NC |
5992 | if (h == NULL) |
5993 | continue; | |
5994 | ||
5995 | if (h->plt.refcount > 0) | |
5996 | h->plt.refcount -= 1; | |
5997 | break; | |
5998 | ||
ce336788 JW |
5999 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
6000 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
6001 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
614b09ce JW |
6002 | case BFD_RELOC_AARCH64_MOVW_G0_NC: |
6003 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
6004 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
6005 | case BFD_RELOC_AARCH64_MOVW_G3: | |
a6bb11b2 | 6006 | case BFD_RELOC_AARCH64_NN: |
8847944f | 6007 | if (h != NULL && info->executable) |
59c108f7 NC |
6008 | { |
6009 | if (h->plt.refcount > 0) | |
6010 | h->plt.refcount -= 1; | |
6011 | } | |
6012 | break; | |
cec5225b | 6013 | |
59c108f7 NC |
6014 | default: |
6015 | break; | |
6016 | } | |
6017 | } | |
6018 | ||
a06ea964 NC |
6019 | return TRUE; |
6020 | } | |
6021 | ||
6022 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
6023 | regular object. The current definition is in some section of the | |
6024 | dynamic object, but we're not including those sections. We have to | |
6025 | change the definition to something the rest of the link can | |
6026 | understand. */ | |
6027 | ||
6028 | static bfd_boolean | |
cec5225b | 6029 | elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info, |
a06ea964 NC |
6030 | struct elf_link_hash_entry *h) |
6031 | { | |
cec5225b | 6032 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
6033 | asection *s; |
6034 | ||
6035 | /* If this is a function, put it in the procedure linkage table. We | |
6036 | will fill in the contents of the procedure linkage table later, | |
6037 | when we know the address of the .got section. */ | |
1419bbe5 | 6038 | if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt) |
a06ea964 NC |
6039 | { |
6040 | if (h->plt.refcount <= 0 | |
1419bbe5 WN |
6041 | || (h->type != STT_GNU_IFUNC |
6042 | && (SYMBOL_CALLS_LOCAL (info, h) | |
6043 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
6044 | && h->root.type == bfd_link_hash_undefweak)))) | |
a06ea964 NC |
6045 | { |
6046 | /* This case can occur if we saw a CALL26 reloc in | |
6047 | an input file, but the symbol wasn't referred to | |
6048 | by a dynamic object or all references were | |
6049 | garbage collected. In which case we can end up | |
6050 | resolving. */ | |
6051 | h->plt.offset = (bfd_vma) - 1; | |
6052 | h->needs_plt = 0; | |
6053 | } | |
6054 | ||
6055 | return TRUE; | |
6056 | } | |
6057 | else | |
80de0c6d | 6058 | /* Otherwise, reset to -1. */ |
a06ea964 NC |
6059 | h->plt.offset = (bfd_vma) - 1; |
6060 | ||
6061 | ||
6062 | /* If this is a weak symbol, and there is a real definition, the | |
6063 | processor independent code will have arranged for us to see the | |
6064 | real definition first, and we can just use the same value. */ | |
6065 | if (h->u.weakdef != NULL) | |
6066 | { | |
6067 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
6068 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
6069 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
6070 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
6071 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) | |
6072 | h->non_got_ref = h->u.weakdef->non_got_ref; | |
6073 | return TRUE; | |
6074 | } | |
6075 | ||
6076 | /* If we are creating a shared library, we must presume that the | |
6077 | only references to the symbol are via the global offset table. | |
6078 | For such cases we need not do anything here; the relocations will | |
6079 | be handled correctly by relocate_section. */ | |
6080 | if (info->shared) | |
6081 | return TRUE; | |
6082 | ||
6083 | /* If there are no references to this symbol that do not use the | |
6084 | GOT, we don't need to generate a copy reloc. */ | |
6085 | if (!h->non_got_ref) | |
6086 | return TRUE; | |
6087 | ||
6088 | /* If -z nocopyreloc was given, we won't generate them either. */ | |
6089 | if (info->nocopyreloc) | |
6090 | { | |
6091 | h->non_got_ref = 0; | |
6092 | return TRUE; | |
6093 | } | |
6094 | ||
6095 | /* We must allocate the symbol in our .dynbss section, which will | |
6096 | become part of the .bss section of the executable. There will be | |
6097 | an entry for this symbol in the .dynsym section. The dynamic | |
6098 | object will contain position independent code, so all references | |
6099 | from the dynamic object to this symbol will go through the global | |
6100 | offset table. The dynamic linker will use the .dynsym entry to | |
6101 | determine the address it must put in the global offset table, so | |
6102 | both the dynamic object and the regular object will refer to the | |
6103 | same memory location for the variable. */ | |
6104 | ||
cec5225b | 6105 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
6106 | |
6107 | /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker | |
6108 | to copy the initial value out of the dynamic object and into the | |
6109 | runtime process image. */ | |
6110 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) | |
6111 | { | |
6112 | htab->srelbss->size += RELOC_SIZE (htab); | |
6113 | h->needs_copy = 1; | |
6114 | } | |
6115 | ||
6116 | s = htab->sdynbss; | |
6117 | ||
6cabe1ea | 6118 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
a06ea964 NC |
6119 | |
6120 | } | |
6121 | ||
6122 | static bfd_boolean | |
cec5225b | 6123 | elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number) |
a06ea964 NC |
6124 | { |
6125 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 6126 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
6127 | if (locals == NULL) |
6128 | { | |
6129 | locals = (struct elf_aarch64_local_symbol *) | |
6130 | bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol)); | |
6131 | if (locals == NULL) | |
6132 | return FALSE; | |
cec5225b | 6133 | elf_aarch64_locals (abfd) = locals; |
a06ea964 NC |
6134 | } |
6135 | return TRUE; | |
6136 | } | |
6137 | ||
cc0efaa8 MS |
6138 | /* Create the .got section to hold the global offset table. */ |
6139 | ||
6140 | static bfd_boolean | |
6141 | aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) | |
6142 | { | |
6143 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
6144 | flagword flags; | |
6145 | asection *s; | |
6146 | struct elf_link_hash_entry *h; | |
6147 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
6148 | ||
6149 | /* This function may be called more than once. */ | |
6150 | s = bfd_get_linker_section (abfd, ".got"); | |
6151 | if (s != NULL) | |
6152 | return TRUE; | |
6153 | ||
6154 | flags = bed->dynamic_sec_flags; | |
6155 | ||
6156 | s = bfd_make_section_anyway_with_flags (abfd, | |
6157 | (bed->rela_plts_and_copies_p | |
6158 | ? ".rela.got" : ".rel.got"), | |
6159 | (bed->dynamic_sec_flags | |
6160 | | SEC_READONLY)); | |
6161 | if (s == NULL | |
6162 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
6163 | return FALSE; | |
6164 | htab->srelgot = s; | |
6165 | ||
6166 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); | |
6167 | if (s == NULL | |
6168 | || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
6169 | return FALSE; | |
6170 | htab->sgot = s; | |
6171 | htab->sgot->size += GOT_ENTRY_SIZE; | |
6172 | ||
6173 | if (bed->want_got_sym) | |
6174 | { | |
6175 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
6176 | (or .got.plt) section. We don't do this in the linker script | |
6177 | because we don't want to define the symbol if we are not creating | |
6178 | a global offset table. */ | |
6179 | h = _bfd_elf_define_linkage_sym (abfd, info, s, | |
6180 | "_GLOBAL_OFFSET_TABLE_"); | |
6181 | elf_hash_table (info)->hgot = h; | |
6182 | if (h == NULL) | |
6183 | return FALSE; | |
6184 | } | |
6185 | ||
6186 | if (bed->want_got_plt) | |
6187 | { | |
6188 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); | |
6189 | if (s == NULL | |
6190 | || !bfd_set_section_alignment (abfd, s, | |
6191 | bed->s->log_file_align)) | |
6192 | return FALSE; | |
6193 | htab->sgotplt = s; | |
6194 | } | |
6195 | ||
6196 | /* The first bit of the global offset table is the header. */ | |
6197 | s->size += bed->got_header_size; | |
6198 | ||
6199 | return TRUE; | |
6200 | } | |
6201 | ||
a06ea964 NC |
6202 | /* Look through the relocs for a section during the first phase. */ |
6203 | ||
6204 | static bfd_boolean | |
cec5225b | 6205 | elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
a06ea964 NC |
6206 | asection *sec, const Elf_Internal_Rela *relocs) |
6207 | { | |
6208 | Elf_Internal_Shdr *symtab_hdr; | |
6209 | struct elf_link_hash_entry **sym_hashes; | |
6210 | const Elf_Internal_Rela *rel; | |
6211 | const Elf_Internal_Rela *rel_end; | |
6212 | asection *sreloc; | |
6213 | ||
cec5225b | 6214 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 6215 | |
a06ea964 NC |
6216 | if (info->relocatable) |
6217 | return TRUE; | |
6218 | ||
6219 | BFD_ASSERT (is_aarch64_elf (abfd)); | |
6220 | ||
cec5225b | 6221 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
6222 | sreloc = NULL; |
6223 | ||
6224 | symtab_hdr = &elf_symtab_hdr (abfd); | |
6225 | sym_hashes = elf_sym_hashes (abfd); | |
a06ea964 NC |
6226 | |
6227 | rel_end = relocs + sec->reloc_count; | |
6228 | for (rel = relocs; rel < rel_end; rel++) | |
6229 | { | |
6230 | struct elf_link_hash_entry *h; | |
6231 | unsigned long r_symndx; | |
6232 | unsigned int r_type; | |
a6bb11b2 | 6233 | bfd_reloc_code_real_type bfd_r_type; |
1419bbe5 | 6234 | Elf_Internal_Sym *isym; |
a06ea964 | 6235 | |
cec5225b YZ |
6236 | r_symndx = ELFNN_R_SYM (rel->r_info); |
6237 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 NC |
6238 | |
6239 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
6240 | { | |
6241 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd, | |
6242 | r_symndx); | |
6243 | return FALSE; | |
6244 | } | |
6245 | ||
ed5acf27 | 6246 | if (r_symndx < symtab_hdr->sh_info) |
1419bbe5 WN |
6247 | { |
6248 | /* A local symbol. */ | |
6249 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
6250 | abfd, r_symndx); | |
6251 | if (isym == NULL) | |
6252 | return FALSE; | |
6253 | ||
6254 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
6255 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
6256 | { | |
6257 | h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, | |
6258 | TRUE); | |
6259 | if (h == NULL) | |
6260 | return FALSE; | |
6261 | ||
6262 | /* Fake a STT_GNU_IFUNC symbol. */ | |
6263 | h->type = STT_GNU_IFUNC; | |
6264 | h->def_regular = 1; | |
6265 | h->ref_regular = 1; | |
6266 | h->forced_local = 1; | |
6267 | h->root.type = bfd_link_hash_defined; | |
6268 | } | |
6269 | else | |
6270 | h = NULL; | |
6271 | } | |
a06ea964 NC |
6272 | else |
6273 | { | |
6274 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
6275 | while (h->root.type == bfd_link_hash_indirect | |
6276 | || h->root.type == bfd_link_hash_warning) | |
6277 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 AM |
6278 | |
6279 | /* PR15323, ref flags aren't set for references in the same | |
6280 | object. */ | |
6281 | h->root.non_ir_ref = 1; | |
a06ea964 NC |
6282 | } |
6283 | ||
6284 | /* Could be done earlier, if h were already available. */ | |
a6bb11b2 | 6285 | bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx); |
a06ea964 | 6286 | |
1419bbe5 WN |
6287 | if (h != NULL) |
6288 | { | |
6289 | /* Create the ifunc sections for static executables. If we | |
6290 | never see an indirect function symbol nor we are building | |
6291 | a static executable, those sections will be empty and | |
6292 | won't appear in output. */ | |
6293 | switch (bfd_r_type) | |
6294 | { | |
6295 | default: | |
6296 | break; | |
6297 | ||
ce336788 JW |
6298 | case BFD_RELOC_AARCH64_ADD_LO12: |
6299 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: | |
6300 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
1419bbe5 | 6301 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 6302 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
1419bbe5 WN |
6303 | case BFD_RELOC_AARCH64_JUMP26: |
6304 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: | |
99ad26cb | 6305 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
1419bbe5 | 6306 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
ce336788 | 6307 | case BFD_RELOC_AARCH64_NN: |
1419bbe5 WN |
6308 | if (htab->root.dynobj == NULL) |
6309 | htab->root.dynobj = abfd; | |
6310 | if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info)) | |
6311 | return FALSE; | |
6312 | break; | |
6313 | } | |
6314 | ||
6315 | /* It is referenced by a non-shared object. */ | |
6316 | h->ref_regular = 1; | |
6317 | h->root.non_ir_ref = 1; | |
6318 | } | |
6319 | ||
a6bb11b2 | 6320 | switch (bfd_r_type) |
a06ea964 | 6321 | { |
a6bb11b2 | 6322 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
6323 | |
6324 | /* We don't need to handle relocs into sections not going into | |
6325 | the "real" output. */ | |
6326 | if ((sec->flags & SEC_ALLOC) == 0) | |
6327 | break; | |
6328 | ||
6329 | if (h != NULL) | |
6330 | { | |
6331 | if (!info->shared) | |
6332 | h->non_got_ref = 1; | |
6333 | ||
6334 | h->plt.refcount += 1; | |
6335 | h->pointer_equality_needed = 1; | |
6336 | } | |
6337 | ||
6338 | /* No need to do anything if we're not creating a shared | |
6339 | object. */ | |
6340 | if (! info->shared) | |
6341 | break; | |
6342 | ||
6343 | { | |
6344 | struct elf_dyn_relocs *p; | |
6345 | struct elf_dyn_relocs **head; | |
6346 | ||
6347 | /* We must copy these reloc types into the output file. | |
6348 | Create a reloc section in dynobj and make room for | |
6349 | this reloc. */ | |
6350 | if (sreloc == NULL) | |
6351 | { | |
6352 | if (htab->root.dynobj == NULL) | |
6353 | htab->root.dynobj = abfd; | |
6354 | ||
6355 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
0608afa7 | 6356 | (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE); |
a06ea964 NC |
6357 | |
6358 | if (sreloc == NULL) | |
6359 | return FALSE; | |
6360 | } | |
6361 | ||
6362 | /* If this is a global symbol, we count the number of | |
6363 | relocations we need for this symbol. */ | |
6364 | if (h != NULL) | |
6365 | { | |
cec5225b YZ |
6366 | struct elf_aarch64_link_hash_entry *eh; |
6367 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
6368 | head = &eh->dyn_relocs; |
6369 | } | |
6370 | else | |
6371 | { | |
6372 | /* Track dynamic relocs needed for local syms too. | |
6373 | We really need local syms available to do this | |
6374 | easily. Oh well. */ | |
6375 | ||
6376 | asection *s; | |
6377 | void **vpp; | |
a06ea964 NC |
6378 | |
6379 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
6380 | abfd, r_symndx); | |
6381 | if (isym == NULL) | |
6382 | return FALSE; | |
6383 | ||
6384 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
6385 | if (s == NULL) | |
6386 | s = sec; | |
6387 | ||
6388 | /* Beware of type punned pointers vs strict aliasing | |
6389 | rules. */ | |
6390 | vpp = &(elf_section_data (s)->local_dynrel); | |
6391 | head = (struct elf_dyn_relocs **) vpp; | |
6392 | } | |
6393 | ||
6394 | p = *head; | |
6395 | if (p == NULL || p->sec != sec) | |
6396 | { | |
6397 | bfd_size_type amt = sizeof *p; | |
6398 | p = ((struct elf_dyn_relocs *) | |
6399 | bfd_zalloc (htab->root.dynobj, amt)); | |
6400 | if (p == NULL) | |
6401 | return FALSE; | |
6402 | p->next = *head; | |
6403 | *head = p; | |
6404 | p->sec = sec; | |
6405 | } | |
6406 | ||
6407 | p->count += 1; | |
6408 | ||
6409 | } | |
6410 | break; | |
6411 | ||
6412 | /* RR: We probably want to keep a consistency check that | |
6413 | there are no dangling GOT_PAGE relocs. */ | |
a6bb11b2 | 6414 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
7bcccb57 MS |
6415 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
6416 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: | |
99ad26cb | 6417 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
7bcccb57 MS |
6418 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
6419 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: | |
6420 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
389b8029 | 6421 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
7bcccb57 MS |
6422 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
6423 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: | |
1ada945d | 6424 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a6bb11b2 | 6425 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
7bcccb57 | 6426 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 6427 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 6428 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 6429 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
7bcccb57 | 6430 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 6431 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
a6bb11b2 | 6432 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
7bcccb57 | 6433 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: |
a6bb11b2 | 6434 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: |
a6bb11b2 YZ |
6435 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: |
6436 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
7bcccb57 MS |
6437 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: |
6438 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
6439 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
a06ea964 NC |
6440 | { |
6441 | unsigned got_type; | |
6442 | unsigned old_got_type; | |
6443 | ||
a6bb11b2 | 6444 | got_type = aarch64_reloc_got_type (bfd_r_type); |
a06ea964 NC |
6445 | |
6446 | if (h) | |
6447 | { | |
6448 | h->got.refcount += 1; | |
cec5225b | 6449 | old_got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
6450 | } |
6451 | else | |
6452 | { | |
6453 | struct elf_aarch64_local_symbol *locals; | |
6454 | ||
cec5225b | 6455 | if (!elfNN_aarch64_allocate_local_symbols |
a06ea964 NC |
6456 | (abfd, symtab_hdr->sh_info)) |
6457 | return FALSE; | |
6458 | ||
cec5225b | 6459 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
6460 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
6461 | locals[r_symndx].got_refcount += 1; | |
6462 | old_got_type = locals[r_symndx].got_type; | |
6463 | } | |
6464 | ||
6465 | /* If a variable is accessed with both general dynamic TLS | |
6466 | methods, two slots may be created. */ | |
6467 | if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type)) | |
6468 | got_type |= old_got_type; | |
6469 | ||
6470 | /* We will already have issued an error message if there | |
6471 | is a TLS/non-TLS mismatch, based on the symbol type. | |
6472 | So just combine any TLS types needed. */ | |
6473 | if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL | |
6474 | && got_type != GOT_NORMAL) | |
6475 | got_type |= old_got_type; | |
6476 | ||
6477 | /* If the symbol is accessed by both IE and GD methods, we | |
6478 | are able to relax. Turn off the GD flag, without | |
6479 | messing up with any other kind of TLS types that may be | |
6480 | involved. */ | |
6481 | if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type)) | |
6482 | got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD); | |
6483 | ||
6484 | if (old_got_type != got_type) | |
6485 | { | |
6486 | if (h != NULL) | |
cec5225b | 6487 | elf_aarch64_hash_entry (h)->got_type = got_type; |
a06ea964 NC |
6488 | else |
6489 | { | |
6490 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 6491 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
6492 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
6493 | locals[r_symndx].got_type = got_type; | |
6494 | } | |
6495 | } | |
6496 | ||
cc0efaa8 MS |
6497 | if (htab->root.dynobj == NULL) |
6498 | htab->root.dynobj = abfd; | |
6499 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
6500 | return FALSE; | |
a06ea964 NC |
6501 | break; |
6502 | } | |
6503 | ||
614b09ce JW |
6504 | case BFD_RELOC_AARCH64_MOVW_G0_NC: |
6505 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
6506 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
6507 | case BFD_RELOC_AARCH64_MOVW_G3: | |
6508 | if (info->shared) | |
6509 | { | |
6510 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
6511 | (*_bfd_error_handler) | |
6512 | (_("%B: relocation %s against `%s' can not be used when making " | |
6513 | "a shared object; recompile with -fPIC"), | |
6514 | abfd, elfNN_aarch64_howto_table[howto_index].name, | |
6515 | (h) ? h->root.root.string : "a local symbol"); | |
6516 | bfd_set_error (bfd_error_bad_value); | |
6517 | return FALSE; | |
6518 | } | |
6519 | ||
a6bb11b2 YZ |
6520 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
6521 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
6522 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
a06ea964 NC |
6523 | if (h != NULL && info->executable) |
6524 | { | |
6525 | /* If this reloc is in a read-only section, we might | |
6526 | need a copy reloc. We can't check reliably at this | |
6527 | stage whether the section is read-only, as input | |
6528 | sections have not yet been mapped to output sections. | |
6529 | Tentatively set the flag for now, and correct in | |
6530 | adjust_dynamic_symbol. */ | |
6531 | h->non_got_ref = 1; | |
6532 | h->plt.refcount += 1; | |
6533 | h->pointer_equality_needed = 1; | |
6534 | } | |
6535 | /* FIXME:: RR need to handle these in shared libraries | |
6536 | and essentially bomb out as these being non-PIC | |
6537 | relocations in shared libraries. */ | |
6538 | break; | |
6539 | ||
a6bb11b2 YZ |
6540 | case BFD_RELOC_AARCH64_CALL26: |
6541 | case BFD_RELOC_AARCH64_JUMP26: | |
a06ea964 NC |
6542 | /* If this is a local symbol then we resolve it |
6543 | directly without creating a PLT entry. */ | |
6544 | if (h == NULL) | |
6545 | continue; | |
6546 | ||
6547 | h->needs_plt = 1; | |
1419bbe5 WN |
6548 | if (h->plt.refcount <= 0) |
6549 | h->plt.refcount = 1; | |
6550 | else | |
6551 | h->plt.refcount += 1; | |
a06ea964 | 6552 | break; |
a6bb11b2 YZ |
6553 | |
6554 | default: | |
6555 | break; | |
a06ea964 NC |
6556 | } |
6557 | } | |
a6bb11b2 | 6558 | |
a06ea964 NC |
6559 | return TRUE; |
6560 | } | |
6561 | ||
6562 | /* Treat mapping symbols as special target symbols. */ | |
6563 | ||
6564 | static bfd_boolean | |
cec5225b | 6565 | elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
6566 | asymbol *sym) |
6567 | { | |
6568 | return bfd_is_aarch64_special_symbol_name (sym->name, | |
6569 | BFD_AARCH64_SPECIAL_SYM_TYPE_ANY); | |
6570 | } | |
6571 | ||
6572 | /* This is a copy of elf_find_function () from elf.c except that | |
6573 | AArch64 mapping symbols are ignored when looking for function names. */ | |
6574 | ||
6575 | static bfd_boolean | |
6576 | aarch64_elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, | |
a06ea964 | 6577 | asymbol **symbols, |
fb167eb2 | 6578 | asection *section, |
a06ea964 NC |
6579 | bfd_vma offset, |
6580 | const char **filename_ptr, | |
6581 | const char **functionname_ptr) | |
6582 | { | |
6583 | const char *filename = NULL; | |
6584 | asymbol *func = NULL; | |
6585 | bfd_vma low_func = 0; | |
6586 | asymbol **p; | |
6587 | ||
6588 | for (p = symbols; *p != NULL; p++) | |
6589 | { | |
6590 | elf_symbol_type *q; | |
6591 | ||
6592 | q = (elf_symbol_type *) * p; | |
6593 | ||
6594 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) | |
6595 | { | |
6596 | default: | |
6597 | break; | |
6598 | case STT_FILE: | |
6599 | filename = bfd_asymbol_name (&q->symbol); | |
6600 | break; | |
6601 | case STT_FUNC: | |
6602 | case STT_NOTYPE: | |
6603 | /* Skip mapping symbols. */ | |
6604 | if ((q->symbol.flags & BSF_LOCAL) | |
6605 | && (bfd_is_aarch64_special_symbol_name | |
6606 | (q->symbol.name, BFD_AARCH64_SPECIAL_SYM_TYPE_ANY))) | |
6607 | continue; | |
6608 | /* Fall through. */ | |
6609 | if (bfd_get_section (&q->symbol) == section | |
6610 | && q->symbol.value >= low_func && q->symbol.value <= offset) | |
6611 | { | |
6612 | func = (asymbol *) q; | |
6613 | low_func = q->symbol.value; | |
6614 | } | |
6615 | break; | |
6616 | } | |
6617 | } | |
6618 | ||
6619 | if (func == NULL) | |
6620 | return FALSE; | |
6621 | ||
6622 | if (filename_ptr) | |
6623 | *filename_ptr = filename; | |
6624 | if (functionname_ptr) | |
6625 | *functionname_ptr = bfd_asymbol_name (func); | |
6626 | ||
6627 | return TRUE; | |
6628 | } | |
6629 | ||
6630 | ||
6631 | /* Find the nearest line to a particular section and offset, for error | |
6632 | reporting. This code is a duplicate of the code in elf.c, except | |
6633 | that it uses aarch64_elf_find_function. */ | |
6634 | ||
6635 | static bfd_boolean | |
cec5225b | 6636 | elfNN_aarch64_find_nearest_line (bfd *abfd, |
a06ea964 | 6637 | asymbol **symbols, |
fb167eb2 | 6638 | asection *section, |
a06ea964 NC |
6639 | bfd_vma offset, |
6640 | const char **filename_ptr, | |
6641 | const char **functionname_ptr, | |
fb167eb2 AM |
6642 | unsigned int *line_ptr, |
6643 | unsigned int *discriminator_ptr) | |
a06ea964 NC |
6644 | { |
6645 | bfd_boolean found = FALSE; | |
6646 | ||
fb167eb2 | 6647 | if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset, |
a06ea964 | 6648 | filename_ptr, functionname_ptr, |
fb167eb2 AM |
6649 | line_ptr, discriminator_ptr, |
6650 | dwarf_debug_sections, 0, | |
a06ea964 NC |
6651 | &elf_tdata (abfd)->dwarf2_find_line_info)) |
6652 | { | |
6653 | if (!*functionname_ptr) | |
fb167eb2 | 6654 | aarch64_elf_find_function (abfd, symbols, section, offset, |
a06ea964 NC |
6655 | *filename_ptr ? NULL : filename_ptr, |
6656 | functionname_ptr); | |
6657 | ||
6658 | return TRUE; | |
6659 | } | |
6660 | ||
fb167eb2 AM |
6661 | /* Skip _bfd_dwarf1_find_nearest_line since no known AArch64 |
6662 | toolchain uses DWARF1. */ | |
6663 | ||
a06ea964 NC |
6664 | if (!_bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, |
6665 | &found, filename_ptr, | |
6666 | functionname_ptr, line_ptr, | |
6667 | &elf_tdata (abfd)->line_info)) | |
6668 | return FALSE; | |
6669 | ||
6670 | if (found && (*functionname_ptr || *line_ptr)) | |
6671 | return TRUE; | |
6672 | ||
6673 | if (symbols == NULL) | |
6674 | return FALSE; | |
6675 | ||
fb167eb2 | 6676 | if (!aarch64_elf_find_function (abfd, symbols, section, offset, |
a06ea964 NC |
6677 | filename_ptr, functionname_ptr)) |
6678 | return FALSE; | |
6679 | ||
6680 | *line_ptr = 0; | |
6681 | return TRUE; | |
6682 | } | |
6683 | ||
6684 | static bfd_boolean | |
cec5225b | 6685 | elfNN_aarch64_find_inliner_info (bfd *abfd, |
a06ea964 NC |
6686 | const char **filename_ptr, |
6687 | const char **functionname_ptr, | |
6688 | unsigned int *line_ptr) | |
6689 | { | |
6690 | bfd_boolean found; | |
6691 | found = _bfd_dwarf2_find_inliner_info | |
6692 | (abfd, filename_ptr, | |
6693 | functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info); | |
6694 | return found; | |
6695 | } | |
6696 | ||
6697 | ||
6698 | static void | |
cec5225b | 6699 | elfNN_aarch64_post_process_headers (bfd *abfd, |
1419bbe5 | 6700 | struct bfd_link_info *link_info) |
a06ea964 NC |
6701 | { |
6702 | Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */ | |
6703 | ||
6704 | i_ehdrp = elf_elfheader (abfd); | |
a06ea964 | 6705 | i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION; |
1419bbe5 | 6706 | |
78245035 | 6707 | _bfd_elf_post_process_headers (abfd, link_info); |
a06ea964 NC |
6708 | } |
6709 | ||
6710 | static enum elf_reloc_type_class | |
cec5225b | 6711 | elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
7e612e98 AM |
6712 | const asection *rel_sec ATTRIBUTE_UNUSED, |
6713 | const Elf_Internal_Rela *rela) | |
a06ea964 | 6714 | { |
cec5225b | 6715 | switch ((int) ELFNN_R_TYPE (rela->r_info)) |
a06ea964 | 6716 | { |
a6bb11b2 | 6717 | case AARCH64_R (RELATIVE): |
a06ea964 | 6718 | return reloc_class_relative; |
a6bb11b2 | 6719 | case AARCH64_R (JUMP_SLOT): |
a06ea964 | 6720 | return reloc_class_plt; |
a6bb11b2 | 6721 | case AARCH64_R (COPY): |
a06ea964 NC |
6722 | return reloc_class_copy; |
6723 | default: | |
6724 | return reloc_class_normal; | |
6725 | } | |
6726 | } | |
6727 | ||
a06ea964 NC |
6728 | /* Handle an AArch64 specific section when reading an object file. This is |
6729 | called when bfd_section_from_shdr finds a section with an unknown | |
6730 | type. */ | |
6731 | ||
6732 | static bfd_boolean | |
cec5225b | 6733 | elfNN_aarch64_section_from_shdr (bfd *abfd, |
a06ea964 NC |
6734 | Elf_Internal_Shdr *hdr, |
6735 | const char *name, int shindex) | |
6736 | { | |
6737 | /* There ought to be a place to keep ELF backend specific flags, but | |
6738 | at the moment there isn't one. We just keep track of the | |
6739 | sections by their name, instead. Fortunately, the ABI gives | |
6740 | names for all the AArch64 specific sections, so we will probably get | |
6741 | away with this. */ | |
6742 | switch (hdr->sh_type) | |
6743 | { | |
6744 | case SHT_AARCH64_ATTRIBUTES: | |
6745 | break; | |
6746 | ||
6747 | default: | |
6748 | return FALSE; | |
6749 | } | |
6750 | ||
6751 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
6752 | return FALSE; | |
6753 | ||
6754 | return TRUE; | |
6755 | } | |
6756 | ||
6757 | /* A structure used to record a list of sections, independently | |
6758 | of the next and prev fields in the asection structure. */ | |
6759 | typedef struct section_list | |
6760 | { | |
6761 | asection *sec; | |
6762 | struct section_list *next; | |
6763 | struct section_list *prev; | |
6764 | } | |
6765 | section_list; | |
6766 | ||
6767 | /* Unfortunately we need to keep a list of sections for which | |
6768 | an _aarch64_elf_section_data structure has been allocated. This | |
cec5225b | 6769 | is because it is possible for functions like elfNN_aarch64_write_section |
a06ea964 NC |
6770 | to be called on a section which has had an elf_data_structure |
6771 | allocated for it (and so the used_by_bfd field is valid) but | |
6772 | for which the AArch64 extended version of this structure - the | |
6773 | _aarch64_elf_section_data structure - has not been allocated. */ | |
6774 | static section_list *sections_with_aarch64_elf_section_data = NULL; | |
6775 | ||
6776 | static void | |
6777 | record_section_with_aarch64_elf_section_data (asection *sec) | |
6778 | { | |
6779 | struct section_list *entry; | |
6780 | ||
6781 | entry = bfd_malloc (sizeof (*entry)); | |
6782 | if (entry == NULL) | |
6783 | return; | |
6784 | entry->sec = sec; | |
6785 | entry->next = sections_with_aarch64_elf_section_data; | |
6786 | entry->prev = NULL; | |
6787 | if (entry->next != NULL) | |
6788 | entry->next->prev = entry; | |
6789 | sections_with_aarch64_elf_section_data = entry; | |
6790 | } | |
6791 | ||
6792 | static struct section_list * | |
6793 | find_aarch64_elf_section_entry (asection *sec) | |
6794 | { | |
6795 | struct section_list *entry; | |
6796 | static struct section_list *last_entry = NULL; | |
6797 | ||
6798 | /* This is a short cut for the typical case where the sections are added | |
6799 | to the sections_with_aarch64_elf_section_data list in forward order and | |
6800 | then looked up here in backwards order. This makes a real difference | |
6801 | to the ld-srec/sec64k.exp linker test. */ | |
6802 | entry = sections_with_aarch64_elf_section_data; | |
6803 | if (last_entry != NULL) | |
6804 | { | |
6805 | if (last_entry->sec == sec) | |
6806 | entry = last_entry; | |
6807 | else if (last_entry->next != NULL && last_entry->next->sec == sec) | |
6808 | entry = last_entry->next; | |
6809 | } | |
6810 | ||
6811 | for (; entry; entry = entry->next) | |
6812 | if (entry->sec == sec) | |
6813 | break; | |
6814 | ||
6815 | if (entry) | |
6816 | /* Record the entry prior to this one - it is the entry we are | |
6817 | most likely to want to locate next time. Also this way if we | |
6818 | have been called from | |
6819 | unrecord_section_with_aarch64_elf_section_data () we will not | |
6820 | be caching a pointer that is about to be freed. */ | |
6821 | last_entry = entry->prev; | |
6822 | ||
6823 | return entry; | |
6824 | } | |
6825 | ||
6826 | static void | |
6827 | unrecord_section_with_aarch64_elf_section_data (asection *sec) | |
6828 | { | |
6829 | struct section_list *entry; | |
6830 | ||
6831 | entry = find_aarch64_elf_section_entry (sec); | |
6832 | ||
6833 | if (entry) | |
6834 | { | |
6835 | if (entry->prev != NULL) | |
6836 | entry->prev->next = entry->next; | |
6837 | if (entry->next != NULL) | |
6838 | entry->next->prev = entry->prev; | |
6839 | if (entry == sections_with_aarch64_elf_section_data) | |
6840 | sections_with_aarch64_elf_section_data = entry->next; | |
6841 | free (entry); | |
6842 | } | |
6843 | } | |
6844 | ||
6845 | ||
6846 | typedef struct | |
6847 | { | |
6848 | void *finfo; | |
6849 | struct bfd_link_info *info; | |
6850 | asection *sec; | |
6851 | int sec_shndx; | |
6852 | int (*func) (void *, const char *, Elf_Internal_Sym *, | |
6853 | asection *, struct elf_link_hash_entry *); | |
6854 | } output_arch_syminfo; | |
6855 | ||
6856 | enum map_symbol_type | |
6857 | { | |
6858 | AARCH64_MAP_INSN, | |
6859 | AARCH64_MAP_DATA | |
6860 | }; | |
6861 | ||
6862 | ||
6863 | /* Output a single mapping symbol. */ | |
6864 | ||
6865 | static bfd_boolean | |
cec5225b | 6866 | elfNN_aarch64_output_map_sym (output_arch_syminfo *osi, |
a06ea964 NC |
6867 | enum map_symbol_type type, bfd_vma offset) |
6868 | { | |
6869 | static const char *names[2] = { "$x", "$d" }; | |
6870 | Elf_Internal_Sym sym; | |
6871 | ||
6872 | sym.st_value = (osi->sec->output_section->vma | |
6873 | + osi->sec->output_offset + offset); | |
6874 | sym.st_size = 0; | |
6875 | sym.st_other = 0; | |
6876 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
6877 | sym.st_shndx = osi->sec_shndx; | |
6878 | return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1; | |
6879 | } | |
6880 | ||
6881 | ||
6882 | ||
6883 | /* Output mapping symbols for PLT entries associated with H. */ | |
6884 | ||
6885 | static bfd_boolean | |
cec5225b | 6886 | elfNN_aarch64_output_plt_map (struct elf_link_hash_entry *h, void *inf) |
a06ea964 NC |
6887 | { |
6888 | output_arch_syminfo *osi = (output_arch_syminfo *) inf; | |
6889 | bfd_vma addr; | |
6890 | ||
6891 | if (h->root.type == bfd_link_hash_indirect) | |
6892 | return TRUE; | |
6893 | ||
6894 | if (h->root.type == bfd_link_hash_warning) | |
6895 | /* When warning symbols are created, they **replace** the "real" | |
6896 | entry in the hash table, thus we never get to see the real | |
6897 | symbol in a hash traversal. So look at it now. */ | |
6898 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6899 | ||
6900 | if (h->plt.offset == (bfd_vma) - 1) | |
6901 | return TRUE; | |
6902 | ||
6903 | addr = h->plt.offset; | |
6904 | if (addr == 32) | |
6905 | { | |
cec5225b | 6906 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 NC |
6907 | return FALSE; |
6908 | } | |
6909 | return TRUE; | |
6910 | } | |
6911 | ||
6912 | ||
6913 | /* Output a single local symbol for a generated stub. */ | |
6914 | ||
6915 | static bfd_boolean | |
cec5225b | 6916 | elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name, |
a06ea964 NC |
6917 | bfd_vma offset, bfd_vma size) |
6918 | { | |
6919 | Elf_Internal_Sym sym; | |
6920 | ||
6921 | sym.st_value = (osi->sec->output_section->vma | |
6922 | + osi->sec->output_offset + offset); | |
6923 | sym.st_size = size; | |
6924 | sym.st_other = 0; | |
6925 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
6926 | sym.st_shndx = osi->sec_shndx; | |
6927 | return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1; | |
6928 | } | |
6929 | ||
6930 | static bfd_boolean | |
6931 | aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) | |
6932 | { | |
cec5225b | 6933 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
6934 | asection *stub_sec; |
6935 | bfd_vma addr; | |
6936 | char *stub_name; | |
6937 | output_arch_syminfo *osi; | |
6938 | ||
6939 | /* Massage our args to the form they really have. */ | |
cec5225b | 6940 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
6941 | osi = (output_arch_syminfo *) in_arg; |
6942 | ||
6943 | stub_sec = stub_entry->stub_sec; | |
6944 | ||
6945 | /* Ensure this stub is attached to the current section being | |
6946 | processed. */ | |
6947 | if (stub_sec != osi->sec) | |
6948 | return TRUE; | |
6949 | ||
6950 | addr = (bfd_vma) stub_entry->stub_offset; | |
6951 | ||
6952 | stub_name = stub_entry->output_name; | |
6953 | ||
6954 | switch (stub_entry->stub_type) | |
6955 | { | |
6956 | case aarch64_stub_adrp_branch: | |
cec5225b | 6957 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, |
a06ea964 NC |
6958 | sizeof (aarch64_adrp_branch_stub))) |
6959 | return FALSE; | |
cec5225b | 6960 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 NC |
6961 | return FALSE; |
6962 | break; | |
6963 | case aarch64_stub_long_branch: | |
cec5225b | 6964 | if (!elfNN_aarch64_output_stub_sym |
a06ea964 NC |
6965 | (osi, stub_name, addr, sizeof (aarch64_long_branch_stub))) |
6966 | return FALSE; | |
cec5225b | 6967 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 | 6968 | return FALSE; |
cec5225b | 6969 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16)) |
a06ea964 NC |
6970 | return FALSE; |
6971 | break; | |
68fcca92 JW |
6972 | case aarch64_stub_erratum_835769_veneer: |
6973 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
6974 | sizeof (aarch64_erratum_835769_stub))) | |
6975 | return FALSE; | |
6976 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
6977 | return FALSE; | |
6978 | break; | |
4106101c MS |
6979 | case aarch64_stub_erratum_843419_veneer: |
6980 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
6981 | sizeof (aarch64_erratum_843419_stub))) | |
6982 | return FALSE; | |
6983 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
6984 | return FALSE; | |
6985 | break; | |
6986 | ||
a06ea964 | 6987 | default: |
8e2fe09f | 6988 | abort (); |
a06ea964 NC |
6989 | } |
6990 | ||
6991 | return TRUE; | |
6992 | } | |
6993 | ||
6994 | /* Output mapping symbols for linker generated sections. */ | |
6995 | ||
6996 | static bfd_boolean | |
cec5225b | 6997 | elfNN_aarch64_output_arch_local_syms (bfd *output_bfd, |
a06ea964 NC |
6998 | struct bfd_link_info *info, |
6999 | void *finfo, | |
7000 | int (*func) (void *, const char *, | |
7001 | Elf_Internal_Sym *, | |
7002 | asection *, | |
7003 | struct elf_link_hash_entry | |
7004 | *)) | |
7005 | { | |
7006 | output_arch_syminfo osi; | |
cec5225b | 7007 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 7008 | |
cec5225b | 7009 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7010 | |
7011 | osi.finfo = finfo; | |
7012 | osi.info = info; | |
7013 | osi.func = func; | |
7014 | ||
7015 | /* Long calls stubs. */ | |
7016 | if (htab->stub_bfd && htab->stub_bfd->sections) | |
7017 | { | |
7018 | asection *stub_sec; | |
7019 | ||
7020 | for (stub_sec = htab->stub_bfd->sections; | |
7021 | stub_sec != NULL; stub_sec = stub_sec->next) | |
7022 | { | |
7023 | /* Ignore non-stub sections. */ | |
7024 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
7025 | continue; | |
7026 | ||
7027 | osi.sec = stub_sec; | |
7028 | ||
7029 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
7030 | (output_bfd, osi.sec->output_section); | |
7031 | ||
61865519 MS |
7032 | /* The first instruction in a stub is always a branch. */ |
7033 | if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0)) | |
7034 | return FALSE; | |
7035 | ||
a06ea964 NC |
7036 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub, |
7037 | &osi); | |
7038 | } | |
7039 | } | |
7040 | ||
7041 | /* Finally, output mapping symbols for the PLT. */ | |
7042 | if (!htab->root.splt || htab->root.splt->size == 0) | |
7043 | return TRUE; | |
7044 | ||
7045 | /* For now live without mapping symbols for the plt. */ | |
7046 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
7047 | (output_bfd, htab->root.splt->output_section); | |
7048 | osi.sec = htab->root.splt; | |
7049 | ||
cec5225b | 7050 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_output_plt_map, |
a06ea964 NC |
7051 | (void *) &osi); |
7052 | ||
7053 | return TRUE; | |
7054 | ||
7055 | } | |
7056 | ||
7057 | /* Allocate target specific section data. */ | |
7058 | ||
7059 | static bfd_boolean | |
cec5225b | 7060 | elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec) |
a06ea964 NC |
7061 | { |
7062 | if (!sec->used_by_bfd) | |
7063 | { | |
7064 | _aarch64_elf_section_data *sdata; | |
7065 | bfd_size_type amt = sizeof (*sdata); | |
7066 | ||
7067 | sdata = bfd_zalloc (abfd, amt); | |
7068 | if (sdata == NULL) | |
7069 | return FALSE; | |
7070 | sec->used_by_bfd = sdata; | |
7071 | } | |
7072 | ||
7073 | record_section_with_aarch64_elf_section_data (sec); | |
7074 | ||
7075 | return _bfd_elf_new_section_hook (abfd, sec); | |
7076 | } | |
7077 | ||
7078 | ||
7079 | static void | |
7080 | unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
7081 | asection *sec, | |
7082 | void *ignore ATTRIBUTE_UNUSED) | |
7083 | { | |
7084 | unrecord_section_with_aarch64_elf_section_data (sec); | |
7085 | } | |
7086 | ||
7087 | static bfd_boolean | |
cec5225b | 7088 | elfNN_aarch64_close_and_cleanup (bfd *abfd) |
a06ea964 NC |
7089 | { |
7090 | if (abfd->sections) | |
7091 | bfd_map_over_sections (abfd, | |
7092 | unrecord_section_via_map_over_sections, NULL); | |
7093 | ||
7094 | return _bfd_elf_close_and_cleanup (abfd); | |
7095 | } | |
7096 | ||
7097 | static bfd_boolean | |
cec5225b | 7098 | elfNN_aarch64_bfd_free_cached_info (bfd *abfd) |
a06ea964 NC |
7099 | { |
7100 | if (abfd->sections) | |
7101 | bfd_map_over_sections (abfd, | |
7102 | unrecord_section_via_map_over_sections, NULL); | |
7103 | ||
7104 | return _bfd_free_cached_info (abfd); | |
7105 | } | |
7106 | ||
a06ea964 NC |
7107 | /* Create dynamic sections. This is different from the ARM backend in that |
7108 | the got, plt, gotplt and their relocation sections are all created in the | |
7109 | standard part of the bfd elf backend. */ | |
7110 | ||
7111 | static bfd_boolean | |
cec5225b | 7112 | elfNN_aarch64_create_dynamic_sections (bfd *dynobj, |
a06ea964 NC |
7113 | struct bfd_link_info *info) |
7114 | { | |
cec5225b | 7115 | struct elf_aarch64_link_hash_table *htab; |
cc0efaa8 MS |
7116 | |
7117 | /* We need to create .got section. */ | |
7118 | if (!aarch64_elf_create_got_section (dynobj, info)) | |
7119 | return FALSE; | |
a06ea964 NC |
7120 | |
7121 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
7122 | return FALSE; | |
7123 | ||
cec5225b | 7124 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7125 | htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss"); |
7126 | if (!info->shared) | |
7127 | htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss"); | |
7128 | ||
7129 | if (!htab->sdynbss || (!info->shared && !htab->srelbss)) | |
7130 | abort (); | |
7131 | ||
a06ea964 NC |
7132 | return TRUE; |
7133 | } | |
7134 | ||
7135 | ||
7136 | /* Allocate space in .plt, .got and associated reloc sections for | |
7137 | dynamic relocs. */ | |
7138 | ||
7139 | static bfd_boolean | |
cec5225b | 7140 | elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
a06ea964 NC |
7141 | { |
7142 | struct bfd_link_info *info; | |
cec5225b YZ |
7143 | struct elf_aarch64_link_hash_table *htab; |
7144 | struct elf_aarch64_link_hash_entry *eh; | |
a06ea964 NC |
7145 | struct elf_dyn_relocs *p; |
7146 | ||
7147 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
7148 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
7149 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
7150 | ||
7151 | There is no need to process bfd_link_hash_indirect symbols here | |
7152 | because we will also be presented with the concrete instance of | |
cec5225b | 7153 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been |
a06ea964 NC |
7154 | called to copy all relevant data from the generic to the concrete |
7155 | symbol instance. | |
7156 | */ | |
7157 | if (h->root.type == bfd_link_hash_indirect) | |
7158 | return TRUE; | |
7159 | ||
7160 | if (h->root.type == bfd_link_hash_warning) | |
7161 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7162 | ||
7163 | info = (struct bfd_link_info *) inf; | |
cec5225b | 7164 | htab = elf_aarch64_hash_table (info); |
a06ea964 | 7165 | |
1419bbe5 WN |
7166 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
7167 | here if it is defined and referenced in a non-shared object. */ | |
7168 | if (h->type == STT_GNU_IFUNC | |
7169 | && h->def_regular) | |
7170 | return TRUE; | |
7171 | else if (htab->root.dynamic_sections_created && h->plt.refcount > 0) | |
a06ea964 NC |
7172 | { |
7173 | /* Make sure this symbol is output as a dynamic symbol. | |
7174 | Undefined weak syms won't yet be marked as dynamic. */ | |
7175 | if (h->dynindx == -1 && !h->forced_local) | |
7176 | { | |
7177 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
7178 | return FALSE; | |
7179 | } | |
7180 | ||
7181 | if (info->shared || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
7182 | { | |
7183 | asection *s = htab->root.splt; | |
7184 | ||
7185 | /* If this is the first .plt entry, make room for the special | |
7186 | first entry. */ | |
7187 | if (s->size == 0) | |
7188 | s->size += htab->plt_header_size; | |
7189 | ||
7190 | h->plt.offset = s->size; | |
7191 | ||
7192 | /* If this symbol is not defined in a regular file, and we are | |
7193 | not generating a shared library, then set the symbol to this | |
7194 | location in the .plt. This is required to make function | |
7195 | pointers compare as equal between the normal executable and | |
7196 | the shared library. */ | |
7197 | if (!info->shared && !h->def_regular) | |
7198 | { | |
7199 | h->root.u.def.section = s; | |
7200 | h->root.u.def.value = h->plt.offset; | |
7201 | } | |
7202 | ||
7203 | /* Make room for this entry. For now we only create the | |
7204 | small model PLT entries. We later need to find a way | |
7205 | of relaxing into these from the large model PLT entries. */ | |
7206 | s->size += PLT_SMALL_ENTRY_SIZE; | |
7207 | ||
7208 | /* We also need to make an entry in the .got.plt section, which | |
7209 | will be placed in the .got section by the linker script. */ | |
7210 | htab->root.sgotplt->size += GOT_ENTRY_SIZE; | |
7211 | ||
7212 | /* We also need to make an entry in the .rela.plt section. */ | |
7213 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
7214 | ||
7215 | /* We need to ensure that all GOT entries that serve the PLT | |
7216 | are consecutive with the special GOT slots [0] [1] and | |
7217 | [2]. Any addtional relocations, such as | |
7218 | R_AARCH64_TLSDESC, must be placed after the PLT related | |
7219 | entries. We abuse the reloc_count such that during | |
7220 | sizing we adjust reloc_count to indicate the number of | |
7221 | PLT related reserved entries. In subsequent phases when | |
7222 | filling in the contents of the reloc entries, PLT related | |
7223 | entries are placed by computing their PLT index (0 | |
7224 | .. reloc_count). While other none PLT relocs are placed | |
7225 | at the slot indicated by reloc_count and reloc_count is | |
7226 | updated. */ | |
7227 | ||
7228 | htab->root.srelplt->reloc_count++; | |
7229 | } | |
7230 | else | |
7231 | { | |
7232 | h->plt.offset = (bfd_vma) - 1; | |
7233 | h->needs_plt = 0; | |
7234 | } | |
7235 | } | |
7236 | else | |
7237 | { | |
7238 | h->plt.offset = (bfd_vma) - 1; | |
7239 | h->needs_plt = 0; | |
7240 | } | |
7241 | ||
cec5225b | 7242 | eh = (struct elf_aarch64_link_hash_entry *) h; |
a06ea964 NC |
7243 | eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; |
7244 | ||
7245 | if (h->got.refcount > 0) | |
7246 | { | |
7247 | bfd_boolean dyn; | |
cec5225b | 7248 | unsigned got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
7249 | |
7250 | h->got.offset = (bfd_vma) - 1; | |
7251 | ||
7252 | dyn = htab->root.dynamic_sections_created; | |
7253 | ||
7254 | /* Make sure this symbol is output as a dynamic symbol. | |
7255 | Undefined weak syms won't yet be marked as dynamic. */ | |
7256 | if (dyn && h->dynindx == -1 && !h->forced_local) | |
7257 | { | |
7258 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
7259 | return FALSE; | |
7260 | } | |
7261 | ||
7262 | if (got_type == GOT_UNKNOWN) | |
7263 | { | |
7264 | } | |
7265 | else if (got_type == GOT_NORMAL) | |
7266 | { | |
7267 | h->got.offset = htab->root.sgot->size; | |
7268 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
7269 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7270 | || h->root.type != bfd_link_hash_undefweak) | |
7271 | && (info->shared | |
7272 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
7273 | { | |
7274 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
7275 | } | |
7276 | } | |
7277 | else | |
7278 | { | |
7279 | int indx; | |
7280 | if (got_type & GOT_TLSDESC_GD) | |
7281 | { | |
7282 | eh->tlsdesc_got_jump_table_offset = | |
7283 | (htab->root.sgotplt->size | |
7284 | - aarch64_compute_jump_table_size (htab)); | |
7285 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
7286 | h->got.offset = (bfd_vma) - 2; | |
7287 | } | |
7288 | ||
7289 | if (got_type & GOT_TLS_GD) | |
7290 | { | |
7291 | h->got.offset = htab->root.sgot->size; | |
7292 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
7293 | } | |
7294 | ||
7295 | if (got_type & GOT_TLS_IE) | |
7296 | { | |
7297 | h->got.offset = htab->root.sgot->size; | |
7298 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
7299 | } | |
7300 | ||
7301 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
7302 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7303 | || h->root.type != bfd_link_hash_undefweak) | |
7304 | && (info->shared | |
7305 | || indx != 0 | |
7306 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
7307 | { | |
7308 | if (got_type & GOT_TLSDESC_GD) | |
7309 | { | |
7310 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
7311 | /* Note reloc_count not incremented here! We have | |
7312 | already adjusted reloc_count for this relocation | |
7313 | type. */ | |
7314 | ||
7315 | /* TLSDESC PLT is now needed, but not yet determined. */ | |
7316 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
7317 | } | |
7318 | ||
7319 | if (got_type & GOT_TLS_GD) | |
7320 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
7321 | ||
7322 | if (got_type & GOT_TLS_IE) | |
7323 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
7324 | } | |
7325 | } | |
7326 | } | |
7327 | else | |
7328 | { | |
7329 | h->got.offset = (bfd_vma) - 1; | |
7330 | } | |
7331 | ||
7332 | if (eh->dyn_relocs == NULL) | |
7333 | return TRUE; | |
7334 | ||
7335 | /* In the shared -Bsymbolic case, discard space allocated for | |
7336 | dynamic pc-relative relocs against symbols which turn out to be | |
7337 | defined in regular objects. For the normal shared case, discard | |
7338 | space for pc-relative relocs that have become local due to symbol | |
7339 | visibility changes. */ | |
7340 | ||
7341 | if (info->shared) | |
7342 | { | |
7343 | /* Relocs that use pc_count are those that appear on a call | |
7344 | insn, or certain REL relocs that can generated via assembly. | |
7345 | We want calls to protected symbols to resolve directly to the | |
7346 | function rather than going via the plt. If people want | |
7347 | function pointer comparisons to work as expected then they | |
7348 | should avoid writing weird assembly. */ | |
7349 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
7350 | { | |
7351 | struct elf_dyn_relocs **pp; | |
7352 | ||
7353 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) | |
7354 | { | |
7355 | p->count -= p->pc_count; | |
7356 | p->pc_count = 0; | |
7357 | if (p->count == 0) | |
7358 | *pp = p->next; | |
7359 | else | |
7360 | pp = &p->next; | |
7361 | } | |
7362 | } | |
7363 | ||
7364 | /* Also discard relocs on undefined weak syms with non-default | |
7365 | visibility. */ | |
7366 | if (eh->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak) | |
7367 | { | |
7368 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
7369 | eh->dyn_relocs = NULL; | |
7370 | ||
7371 | /* Make sure undefined weak symbols are output as a dynamic | |
7372 | symbol in PIEs. */ | |
7373 | else if (h->dynindx == -1 | |
7374 | && !h->forced_local | |
7375 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
7376 | return FALSE; | |
7377 | } | |
7378 | ||
7379 | } | |
7380 | else if (ELIMINATE_COPY_RELOCS) | |
7381 | { | |
7382 | /* For the non-shared case, discard space for relocs against | |
7383 | symbols which turn out to need copy relocs or are not | |
7384 | dynamic. */ | |
7385 | ||
7386 | if (!h->non_got_ref | |
7387 | && ((h->def_dynamic | |
7388 | && !h->def_regular) | |
7389 | || (htab->root.dynamic_sections_created | |
7390 | && (h->root.type == bfd_link_hash_undefweak | |
7391 | || h->root.type == bfd_link_hash_undefined)))) | |
7392 | { | |
7393 | /* Make sure this symbol is output as a dynamic symbol. | |
7394 | Undefined weak syms won't yet be marked as dynamic. */ | |
7395 | if (h->dynindx == -1 | |
7396 | && !h->forced_local | |
7397 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
7398 | return FALSE; | |
7399 | ||
7400 | /* If that succeeded, we know we'll be keeping all the | |
7401 | relocs. */ | |
7402 | if (h->dynindx != -1) | |
7403 | goto keep; | |
7404 | } | |
7405 | ||
7406 | eh->dyn_relocs = NULL; | |
7407 | ||
7408 | keep:; | |
7409 | } | |
7410 | ||
7411 | /* Finally, allocate space. */ | |
7412 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7413 | { | |
7414 | asection *sreloc; | |
7415 | ||
7416 | sreloc = elf_section_data (p->sec)->sreloc; | |
7417 | ||
7418 | BFD_ASSERT (sreloc != NULL); | |
7419 | ||
7420 | sreloc->size += p->count * RELOC_SIZE (htab); | |
7421 | } | |
7422 | ||
7423 | return TRUE; | |
7424 | } | |
7425 | ||
1419bbe5 WN |
7426 | /* Allocate space in .plt, .got and associated reloc sections for |
7427 | ifunc dynamic relocs. */ | |
7428 | ||
7429 | static bfd_boolean | |
7430 | elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h, | |
7431 | void *inf) | |
7432 | { | |
7433 | struct bfd_link_info *info; | |
7434 | struct elf_aarch64_link_hash_table *htab; | |
7435 | struct elf_aarch64_link_hash_entry *eh; | |
7436 | ||
7437 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
7438 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
7439 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
7440 | ||
7441 | There is no need to process bfd_link_hash_indirect symbols here | |
7442 | because we will also be presented with the concrete instance of | |
7443 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been | |
7444 | called to copy all relevant data from the generic to the concrete | |
7445 | symbol instance. | |
7446 | */ | |
7447 | if (h->root.type == bfd_link_hash_indirect) | |
7448 | return TRUE; | |
7449 | ||
7450 | if (h->root.type == bfd_link_hash_warning) | |
7451 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7452 | ||
7453 | info = (struct bfd_link_info *) inf; | |
7454 | htab = elf_aarch64_hash_table (info); | |
7455 | ||
7456 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
7457 | ||
7458 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it | |
7459 | here if it is defined and referenced in a non-shared object. */ | |
7460 | if (h->type == STT_GNU_IFUNC | |
7461 | && h->def_regular) | |
7462 | return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, | |
7463 | &eh->dyn_relocs, | |
7464 | htab->plt_entry_size, | |
7465 | htab->plt_header_size, | |
7466 | GOT_ENTRY_SIZE); | |
7467 | return TRUE; | |
7468 | } | |
7469 | ||
7470 | /* Allocate space in .plt, .got and associated reloc sections for | |
7471 | local dynamic relocs. */ | |
7472 | ||
7473 | static bfd_boolean | |
7474 | elfNN_aarch64_allocate_local_dynrelocs (void **slot, void *inf) | |
7475 | { | |
7476 | struct elf_link_hash_entry *h | |
7477 | = (struct elf_link_hash_entry *) *slot; | |
7478 | ||
7479 | if (h->type != STT_GNU_IFUNC | |
7480 | || !h->def_regular | |
7481 | || !h->ref_regular | |
7482 | || !h->forced_local | |
7483 | || h->root.type != bfd_link_hash_defined) | |
7484 | abort (); | |
7485 | ||
7486 | return elfNN_aarch64_allocate_dynrelocs (h, inf); | |
7487 | } | |
7488 | ||
7489 | /* Allocate space in .plt, .got and associated reloc sections for | |
7490 | local ifunc dynamic relocs. */ | |
7491 | ||
7492 | static bfd_boolean | |
7493 | elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf) | |
7494 | { | |
7495 | struct elf_link_hash_entry *h | |
7496 | = (struct elf_link_hash_entry *) *slot; | |
7497 | ||
7498 | if (h->type != STT_GNU_IFUNC | |
7499 | || !h->def_regular | |
7500 | || !h->ref_regular | |
7501 | || !h->forced_local | |
7502 | || h->root.type != bfd_link_hash_defined) | |
7503 | abort (); | |
7504 | ||
7505 | return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf); | |
7506 | } | |
a06ea964 | 7507 | |
a06ea964 NC |
7508 | /* This is the most important function of all . Innocuosly named |
7509 | though ! */ | |
7510 | static bfd_boolean | |
cec5225b | 7511 | elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
7512 | struct bfd_link_info *info) |
7513 | { | |
cec5225b | 7514 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
7515 | bfd *dynobj; |
7516 | asection *s; | |
7517 | bfd_boolean relocs; | |
7518 | bfd *ibfd; | |
7519 | ||
cec5225b | 7520 | htab = elf_aarch64_hash_table ((info)); |
a06ea964 NC |
7521 | dynobj = htab->root.dynobj; |
7522 | ||
7523 | BFD_ASSERT (dynobj != NULL); | |
7524 | ||
7525 | if (htab->root.dynamic_sections_created) | |
7526 | { | |
7527 | if (info->executable) | |
7528 | { | |
7529 | s = bfd_get_linker_section (dynobj, ".interp"); | |
7530 | if (s == NULL) | |
7531 | abort (); | |
7532 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
7533 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
7534 | } | |
7535 | } | |
7536 | ||
7537 | /* Set up .got offsets for local syms, and space for local dynamic | |
7538 | relocs. */ | |
c72f2fb2 | 7539 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
a06ea964 NC |
7540 | { |
7541 | struct elf_aarch64_local_symbol *locals = NULL; | |
7542 | Elf_Internal_Shdr *symtab_hdr; | |
7543 | asection *srel; | |
7544 | unsigned int i; | |
7545 | ||
7546 | if (!is_aarch64_elf (ibfd)) | |
7547 | continue; | |
7548 | ||
7549 | for (s = ibfd->sections; s != NULL; s = s->next) | |
7550 | { | |
7551 | struct elf_dyn_relocs *p; | |
7552 | ||
7553 | for (p = (struct elf_dyn_relocs *) | |
7554 | (elf_section_data (s)->local_dynrel); p != NULL; p = p->next) | |
7555 | { | |
7556 | if (!bfd_is_abs_section (p->sec) | |
7557 | && bfd_is_abs_section (p->sec->output_section)) | |
7558 | { | |
7559 | /* Input section has been discarded, either because | |
7560 | it is a copy of a linkonce section or due to | |
7561 | linker script /DISCARD/, so we'll be discarding | |
7562 | the relocs too. */ | |
7563 | } | |
7564 | else if (p->count != 0) | |
7565 | { | |
7566 | srel = elf_section_data (p->sec)->sreloc; | |
7567 | srel->size += p->count * RELOC_SIZE (htab); | |
7568 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
7569 | info->flags |= DF_TEXTREL; | |
7570 | } | |
7571 | } | |
7572 | } | |
7573 | ||
cec5225b | 7574 | locals = elf_aarch64_locals (ibfd); |
a06ea964 NC |
7575 | if (!locals) |
7576 | continue; | |
7577 | ||
7578 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
7579 | srel = htab->root.srelgot; | |
7580 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
7581 | { | |
7582 | locals[i].got_offset = (bfd_vma) - 1; | |
7583 | locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
7584 | if (locals[i].got_refcount > 0) | |
7585 | { | |
7586 | unsigned got_type = locals[i].got_type; | |
7587 | if (got_type & GOT_TLSDESC_GD) | |
7588 | { | |
7589 | locals[i].tlsdesc_got_jump_table_offset = | |
7590 | (htab->root.sgotplt->size | |
7591 | - aarch64_compute_jump_table_size (htab)); | |
7592 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
7593 | locals[i].got_offset = (bfd_vma) - 2; | |
7594 | } | |
7595 | ||
7596 | if (got_type & GOT_TLS_GD) | |
7597 | { | |
7598 | locals[i].got_offset = htab->root.sgot->size; | |
7599 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
7600 | } | |
7601 | ||
b53b1bed JW |
7602 | if (got_type & GOT_TLS_IE |
7603 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
7604 | { |
7605 | locals[i].got_offset = htab->root.sgot->size; | |
7606 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
7607 | } | |
7608 | ||
7609 | if (got_type == GOT_UNKNOWN) | |
7610 | { | |
7611 | } | |
7612 | ||
a06ea964 NC |
7613 | if (info->shared) |
7614 | { | |
7615 | if (got_type & GOT_TLSDESC_GD) | |
7616 | { | |
7617 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
7618 | /* Note RELOC_COUNT not incremented here! */ | |
7619 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
7620 | } | |
7621 | ||
7622 | if (got_type & GOT_TLS_GD) | |
7623 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
7624 | ||
b53b1bed JW |
7625 | if (got_type & GOT_TLS_IE |
7626 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
7627 | htab->root.srelgot->size += RELOC_SIZE (htab); |
7628 | } | |
7629 | } | |
7630 | else | |
7631 | { | |
7632 | locals[i].got_refcount = (bfd_vma) - 1; | |
7633 | } | |
7634 | } | |
7635 | } | |
7636 | ||
7637 | ||
7638 | /* Allocate global sym .plt and .got entries, and space for global | |
7639 | sym dynamic relocs. */ | |
cec5225b | 7640 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs, |
a06ea964 NC |
7641 | info); |
7642 | ||
1419bbe5 WN |
7643 | /* Allocate global ifunc sym .plt and .got entries, and space for global |
7644 | ifunc sym dynamic relocs. */ | |
7645 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs, | |
7646 | info); | |
7647 | ||
7648 | /* Allocate .plt and .got entries, and space for local symbols. */ | |
7649 | htab_traverse (htab->loc_hash_table, | |
7650 | elfNN_aarch64_allocate_local_dynrelocs, | |
7651 | info); | |
7652 | ||
7653 | /* Allocate .plt and .got entries, and space for local ifunc symbols. */ | |
7654 | htab_traverse (htab->loc_hash_table, | |
7655 | elfNN_aarch64_allocate_local_ifunc_dynrelocs, | |
7656 | info); | |
a06ea964 NC |
7657 | |
7658 | /* For every jump slot reserved in the sgotplt, reloc_count is | |
7659 | incremented. However, when we reserve space for TLS descriptors, | |
7660 | it's not incremented, so in order to compute the space reserved | |
7661 | for them, it suffices to multiply the reloc count by the jump | |
7662 | slot size. */ | |
7663 | ||
7664 | if (htab->root.srelplt) | |
8847944f | 7665 | htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab); |
a06ea964 NC |
7666 | |
7667 | if (htab->tlsdesc_plt) | |
7668 | { | |
7669 | if (htab->root.splt->size == 0) | |
7670 | htab->root.splt->size += PLT_ENTRY_SIZE; | |
7671 | ||
7672 | htab->tlsdesc_plt = htab->root.splt->size; | |
7673 | htab->root.splt->size += PLT_TLSDESC_ENTRY_SIZE; | |
7674 | ||
7675 | /* If we're not using lazy TLS relocations, don't generate the | |
7676 | GOT entry required. */ | |
7677 | if (!(info->flags & DF_BIND_NOW)) | |
7678 | { | |
7679 | htab->dt_tlsdesc_got = htab->root.sgot->size; | |
7680 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
7681 | } | |
7682 | } | |
7683 | ||
68fcca92 | 7684 | /* Init mapping symbols information to use later to distingush between |
4106101c MS |
7685 | code and data while scanning for errata. */ |
7686 | if (htab->fix_erratum_835769 || htab->fix_erratum_843419) | |
68fcca92 JW |
7687 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
7688 | { | |
7689 | if (!is_aarch64_elf (ibfd)) | |
7690 | continue; | |
7691 | bfd_elfNN_aarch64_init_maps (ibfd); | |
7692 | } | |
7693 | ||
a06ea964 NC |
7694 | /* We now have determined the sizes of the various dynamic sections. |
7695 | Allocate memory for them. */ | |
7696 | relocs = FALSE; | |
7697 | for (s = dynobj->sections; s != NULL; s = s->next) | |
7698 | { | |
7699 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
7700 | continue; | |
7701 | ||
7702 | if (s == htab->root.splt | |
7703 | || s == htab->root.sgot | |
7704 | || s == htab->root.sgotplt | |
7705 | || s == htab->root.iplt | |
7706 | || s == htab->root.igotplt || s == htab->sdynbss) | |
7707 | { | |
7708 | /* Strip this section if we don't need it; see the | |
7709 | comment below. */ | |
7710 | } | |
7711 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) | |
7712 | { | |
7713 | if (s->size != 0 && s != htab->root.srelplt) | |
7714 | relocs = TRUE; | |
7715 | ||
7716 | /* We use the reloc_count field as a counter if we need | |
7717 | to copy relocs into the output file. */ | |
7718 | if (s != htab->root.srelplt) | |
7719 | s->reloc_count = 0; | |
7720 | } | |
7721 | else | |
7722 | { | |
7723 | /* It's not one of our sections, so don't allocate space. */ | |
7724 | continue; | |
7725 | } | |
7726 | ||
7727 | if (s->size == 0) | |
7728 | { | |
7729 | /* If we don't need this section, strip it from the | |
7730 | output file. This is mostly to handle .rela.bss and | |
7731 | .rela.plt. We must create both sections in | |
7732 | create_dynamic_sections, because they must be created | |
7733 | before the linker maps input sections to output | |
7734 | sections. The linker does that before | |
7735 | adjust_dynamic_symbol is called, and it is that | |
7736 | function which decides whether anything needs to go | |
7737 | into these sections. */ | |
7738 | ||
7739 | s->flags |= SEC_EXCLUDE; | |
7740 | continue; | |
7741 | } | |
7742 | ||
7743 | if ((s->flags & SEC_HAS_CONTENTS) == 0) | |
7744 | continue; | |
7745 | ||
7746 | /* Allocate memory for the section contents. We use bfd_zalloc | |
7747 | here in case unused entries are not reclaimed before the | |
7748 | section's contents are written out. This should not happen, | |
7749 | but this way if it does, we get a R_AARCH64_NONE reloc instead | |
7750 | of garbage. */ | |
7751 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
7752 | if (s->contents == NULL) | |
7753 | return FALSE; | |
7754 | } | |
7755 | ||
7756 | if (htab->root.dynamic_sections_created) | |
7757 | { | |
7758 | /* Add some entries to the .dynamic section. We fill in the | |
cec5225b | 7759 | values later, in elfNN_aarch64_finish_dynamic_sections, but we |
a06ea964 NC |
7760 | must add the entries now so that we get the correct size for |
7761 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
7762 | dynamic linker and used by the debugger. */ | |
7763 | #define add_dynamic_entry(TAG, VAL) \ | |
7764 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
7765 | ||
7766 | if (info->executable) | |
7767 | { | |
7768 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
7769 | return FALSE; | |
7770 | } | |
7771 | ||
7772 | if (htab->root.splt->size != 0) | |
7773 | { | |
7774 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
7775 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
7776 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
7777 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
7778 | return FALSE; | |
7779 | ||
7780 | if (htab->tlsdesc_plt | |
7781 | && (!add_dynamic_entry (DT_TLSDESC_PLT, 0) | |
7782 | || !add_dynamic_entry (DT_TLSDESC_GOT, 0))) | |
7783 | return FALSE; | |
7784 | } | |
7785 | ||
7786 | if (relocs) | |
7787 | { | |
7788 | if (!add_dynamic_entry (DT_RELA, 0) | |
7789 | || !add_dynamic_entry (DT_RELASZ, 0) | |
7790 | || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) | |
7791 | return FALSE; | |
7792 | ||
7793 | /* If any dynamic relocs apply to a read-only section, | |
7794 | then we need a DT_TEXTREL entry. */ | |
7795 | if ((info->flags & DF_TEXTREL) != 0) | |
7796 | { | |
7797 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
7798 | return FALSE; | |
7799 | } | |
7800 | } | |
7801 | } | |
7802 | #undef add_dynamic_entry | |
7803 | ||
7804 | return TRUE; | |
a06ea964 NC |
7805 | } |
7806 | ||
7807 | static inline void | |
caed7120 YZ |
7808 | elf_aarch64_update_plt_entry (bfd *output_bfd, |
7809 | bfd_reloc_code_real_type r_type, | |
7810 | bfd_byte *plt_entry, bfd_vma value) | |
a06ea964 | 7811 | { |
caed7120 YZ |
7812 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type); |
7813 | ||
7814 | _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value); | |
a06ea964 NC |
7815 | } |
7816 | ||
7817 | static void | |
cec5225b YZ |
7818 | elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h, |
7819 | struct elf_aarch64_link_hash_table | |
1419bbe5 WN |
7820 | *htab, bfd *output_bfd, |
7821 | struct bfd_link_info *info) | |
a06ea964 NC |
7822 | { |
7823 | bfd_byte *plt_entry; | |
7824 | bfd_vma plt_index; | |
7825 | bfd_vma got_offset; | |
7826 | bfd_vma gotplt_entry_address; | |
7827 | bfd_vma plt_entry_address; | |
7828 | Elf_Internal_Rela rela; | |
7829 | bfd_byte *loc; | |
1419bbe5 WN |
7830 | asection *plt, *gotplt, *relplt; |
7831 | ||
7832 | /* When building a static executable, use .iplt, .igot.plt and | |
7833 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
7834 | if (htab->root.splt != NULL) | |
7835 | { | |
7836 | plt = htab->root.splt; | |
7837 | gotplt = htab->root.sgotplt; | |
7838 | relplt = htab->root.srelplt; | |
7839 | } | |
7840 | else | |
7841 | { | |
7842 | plt = htab->root.iplt; | |
7843 | gotplt = htab->root.igotplt; | |
7844 | relplt = htab->root.irelplt; | |
7845 | } | |
7846 | ||
7847 | /* Get the index in the procedure linkage table which | |
7848 | corresponds to this symbol. This is the index of this symbol | |
7849 | in all the symbols for which we are making plt entries. The | |
7850 | first entry in the procedure linkage table is reserved. | |
a06ea964 | 7851 | |
1419bbe5 WN |
7852 | Get the offset into the .got table of the entry that |
7853 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE | |
7854 | bytes. The first three are reserved for the dynamic linker. | |
692e2b8b | 7855 | |
1419bbe5 WN |
7856 | For static executables, we don't reserve anything. */ |
7857 | ||
7858 | if (plt == htab->root.splt) | |
7859 | { | |
7860 | plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size; | |
7861 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
7862 | } | |
7863 | else | |
7864 | { | |
7865 | plt_index = h->plt.offset / htab->plt_entry_size; | |
7866 | got_offset = plt_index * GOT_ENTRY_SIZE; | |
7867 | } | |
7868 | ||
7869 | plt_entry = plt->contents + h->plt.offset; | |
7870 | plt_entry_address = plt->output_section->vma | |
f44a1f8e | 7871 | + plt->output_offset + h->plt.offset; |
1419bbe5 WN |
7872 | gotplt_entry_address = gotplt->output_section->vma + |
7873 | gotplt->output_offset + got_offset; | |
a06ea964 NC |
7874 | |
7875 | /* Copy in the boiler-plate for the PLTn entry. */ | |
cec5225b | 7876 | memcpy (plt_entry, elfNN_aarch64_small_plt_entry, PLT_SMALL_ENTRY_SIZE); |
a06ea964 NC |
7877 | |
7878 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
7879 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 YZ |
7880 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
7881 | plt_entry, | |
7882 | PG (gotplt_entry_address) - | |
7883 | PG (plt_entry_address)); | |
a06ea964 NC |
7884 | |
7885 | /* Fill in the lo12 bits for the load from the pltgot. */ | |
caed7120 YZ |
7886 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
7887 | plt_entry + 4, | |
7888 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 | 7889 | |
9aff4b7a | 7890 | /* Fill in the lo12 bits for the add from the pltgot entry. */ |
caed7120 YZ |
7891 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
7892 | plt_entry + 8, | |
7893 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 NC |
7894 | |
7895 | /* All the GOTPLT Entries are essentially initialized to PLT0. */ | |
cec5225b | 7896 | bfd_put_NN (output_bfd, |
1419bbe5 WN |
7897 | plt->output_section->vma + plt->output_offset, |
7898 | gotplt->contents + got_offset); | |
a06ea964 | 7899 | |
a06ea964 | 7900 | rela.r_offset = gotplt_entry_address; |
1419bbe5 WN |
7901 | |
7902 | if (h->dynindx == -1 | |
7903 | || ((info->executable | |
7904 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
7905 | && h->def_regular | |
7906 | && h->type == STT_GNU_IFUNC)) | |
7907 | { | |
7908 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
7909 | R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */ | |
7910 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
7911 | rela.r_addend = (h->root.u.def.value | |
7912 | + h->root.u.def.section->output_section->vma | |
7913 | + h->root.u.def.section->output_offset); | |
7914 | } | |
7915 | else | |
7916 | { | |
7917 | /* Fill in the entry in the .rela.plt section. */ | |
7918 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT)); | |
7919 | rela.r_addend = 0; | |
7920 | } | |
a06ea964 NC |
7921 | |
7922 | /* Compute the relocation entry to used based on PLT index and do | |
7923 | not adjust reloc_count. The reloc_count has already been adjusted | |
7924 | to account for this entry. */ | |
1419bbe5 | 7925 | loc = relplt->contents + plt_index * RELOC_SIZE (htab); |
cec5225b | 7926 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
7927 | } |
7928 | ||
7929 | /* Size sections even though they're not dynamic. We use it to setup | |
7930 | _TLS_MODULE_BASE_, if needed. */ | |
7931 | ||
7932 | static bfd_boolean | |
cec5225b | 7933 | elfNN_aarch64_always_size_sections (bfd *output_bfd, |
a06ea964 NC |
7934 | struct bfd_link_info *info) |
7935 | { | |
7936 | asection *tls_sec; | |
7937 | ||
7938 | if (info->relocatable) | |
7939 | return TRUE; | |
7940 | ||
7941 | tls_sec = elf_hash_table (info)->tls_sec; | |
7942 | ||
7943 | if (tls_sec) | |
7944 | { | |
7945 | struct elf_link_hash_entry *tlsbase; | |
7946 | ||
7947 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
7948 | "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE); | |
7949 | ||
7950 | if (tlsbase) | |
7951 | { | |
7952 | struct bfd_link_hash_entry *h = NULL; | |
7953 | const struct elf_backend_data *bed = | |
7954 | get_elf_backend_data (output_bfd); | |
7955 | ||
7956 | if (!(_bfd_generic_link_add_one_symbol | |
7957 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
7958 | tls_sec, 0, NULL, FALSE, bed->collect, &h))) | |
7959 | return FALSE; | |
7960 | ||
7961 | tlsbase->type = STT_TLS; | |
7962 | tlsbase = (struct elf_link_hash_entry *) h; | |
7963 | tlsbase->def_regular = 1; | |
7964 | tlsbase->other = STV_HIDDEN; | |
7965 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
7966 | } | |
7967 | } | |
7968 | ||
7969 | return TRUE; | |
7970 | } | |
7971 | ||
7972 | /* Finish up dynamic symbol handling. We set the contents of various | |
7973 | dynamic sections here. */ | |
7974 | static bfd_boolean | |
cec5225b | 7975 | elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd, |
a06ea964 NC |
7976 | struct bfd_link_info *info, |
7977 | struct elf_link_hash_entry *h, | |
7978 | Elf_Internal_Sym *sym) | |
7979 | { | |
cec5225b YZ |
7980 | struct elf_aarch64_link_hash_table *htab; |
7981 | htab = elf_aarch64_hash_table (info); | |
a06ea964 NC |
7982 | |
7983 | if (h->plt.offset != (bfd_vma) - 1) | |
7984 | { | |
1419bbe5 WN |
7985 | asection *plt, *gotplt, *relplt; |
7986 | ||
a06ea964 NC |
7987 | /* This symbol has an entry in the procedure linkage table. Set |
7988 | it up. */ | |
7989 | ||
1419bbe5 WN |
7990 | /* When building a static executable, use .iplt, .igot.plt and |
7991 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
7992 | if (htab->root.splt != NULL) | |
7993 | { | |
7994 | plt = htab->root.splt; | |
7995 | gotplt = htab->root.sgotplt; | |
7996 | relplt = htab->root.srelplt; | |
7997 | } | |
7998 | else | |
7999 | { | |
8000 | plt = htab->root.iplt; | |
8001 | gotplt = htab->root.igotplt; | |
8002 | relplt = htab->root.irelplt; | |
8003 | } | |
8004 | ||
8005 | /* This symbol has an entry in the procedure linkage table. Set | |
8006 | it up. */ | |
8007 | if ((h->dynindx == -1 | |
8008 | && !((h->forced_local || info->executable) | |
8009 | && h->def_regular | |
8010 | && h->type == STT_GNU_IFUNC)) | |
8011 | || plt == NULL | |
8012 | || gotplt == NULL | |
8013 | || relplt == NULL) | |
a06ea964 NC |
8014 | abort (); |
8015 | ||
1419bbe5 | 8016 | elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info); |
a06ea964 NC |
8017 | if (!h->def_regular) |
8018 | { | |
8019 | /* Mark the symbol as undefined, rather than as defined in | |
46b87d49 | 8020 | the .plt section. */ |
a06ea964 | 8021 | sym->st_shndx = SHN_UNDEF; |
46b87d49 WN |
8022 | /* If the symbol is weak we need to clear the value. |
8023 | Otherwise, the PLT entry would provide a definition for | |
8024 | the symbol even if the symbol wasn't defined anywhere, | |
8025 | and so the symbol would never be NULL. Leave the value if | |
8026 | there were any relocations where pointer equality matters | |
8027 | (this is a clue for the dynamic linker, to make function | |
8028 | pointer comparisons work between an application and shared | |
8029 | library). */ | |
8030 | if (!h->ref_regular_nonweak || !h->pointer_equality_needed) | |
8031 | sym->st_value = 0; | |
a06ea964 NC |
8032 | } |
8033 | } | |
8034 | ||
8035 | if (h->got.offset != (bfd_vma) - 1 | |
cec5225b | 8036 | && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL) |
a06ea964 NC |
8037 | { |
8038 | Elf_Internal_Rela rela; | |
8039 | bfd_byte *loc; | |
8040 | ||
8041 | /* This symbol has an entry in the global offset table. Set it | |
8042 | up. */ | |
8043 | if (htab->root.sgot == NULL || htab->root.srelgot == NULL) | |
8044 | abort (); | |
8045 | ||
8046 | rela.r_offset = (htab->root.sgot->output_section->vma | |
8047 | + htab->root.sgot->output_offset | |
8048 | + (h->got.offset & ~(bfd_vma) 1)); | |
8049 | ||
49206388 WN |
8050 | if (h->def_regular |
8051 | && h->type == STT_GNU_IFUNC) | |
8052 | { | |
8053 | if (info->shared) | |
8054 | { | |
8055 | /* Generate R_AARCH64_GLOB_DAT. */ | |
8056 | goto do_glob_dat; | |
8057 | } | |
8058 | else | |
8059 | { | |
8060 | asection *plt; | |
8061 | ||
8062 | if (!h->pointer_equality_needed) | |
8063 | abort (); | |
8064 | ||
8065 | /* For non-shared object, we can't use .got.plt, which | |
8066 | contains the real function address if we need pointer | |
8067 | equality. We load the GOT entry with the PLT entry. */ | |
8068 | plt = htab->root.splt ? htab->root.splt : htab->root.iplt; | |
8069 | bfd_put_NN (output_bfd, (plt->output_section->vma | |
8070 | + plt->output_offset | |
8071 | + h->plt.offset), | |
8072 | htab->root.sgot->contents | |
8073 | + (h->got.offset & ~(bfd_vma) 1)); | |
8074 | return TRUE; | |
8075 | } | |
8076 | } | |
8077 | else if (info->shared && SYMBOL_REFERENCES_LOCAL (info, h)) | |
a06ea964 NC |
8078 | { |
8079 | if (!h->def_regular) | |
8080 | return FALSE; | |
8081 | ||
8082 | BFD_ASSERT ((h->got.offset & 1) != 0); | |
a6bb11b2 | 8083 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); |
a06ea964 NC |
8084 | rela.r_addend = (h->root.u.def.value |
8085 | + h->root.u.def.section->output_section->vma | |
8086 | + h->root.u.def.section->output_offset); | |
8087 | } | |
8088 | else | |
8089 | { | |
49206388 | 8090 | do_glob_dat: |
a06ea964 | 8091 | BFD_ASSERT ((h->got.offset & 1) == 0); |
cec5225b | 8092 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 | 8093 | htab->root.sgot->contents + h->got.offset); |
a6bb11b2 | 8094 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT)); |
a06ea964 NC |
8095 | rela.r_addend = 0; |
8096 | } | |
8097 | ||
8098 | loc = htab->root.srelgot->contents; | |
8099 | loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 8100 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
8101 | } |
8102 | ||
8103 | if (h->needs_copy) | |
8104 | { | |
8105 | Elf_Internal_Rela rela; | |
8106 | bfd_byte *loc; | |
8107 | ||
8108 | /* This symbol needs a copy reloc. Set it up. */ | |
8109 | ||
8110 | if (h->dynindx == -1 | |
8111 | || (h->root.type != bfd_link_hash_defined | |
8112 | && h->root.type != bfd_link_hash_defweak) | |
8113 | || htab->srelbss == NULL) | |
8114 | abort (); | |
8115 | ||
8116 | rela.r_offset = (h->root.u.def.value | |
8117 | + h->root.u.def.section->output_section->vma | |
8118 | + h->root.u.def.section->output_offset); | |
a6bb11b2 | 8119 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY)); |
a06ea964 NC |
8120 | rela.r_addend = 0; |
8121 | loc = htab->srelbss->contents; | |
8122 | loc += htab->srelbss->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 8123 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
8124 | } |
8125 | ||
8126 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may | |
8127 | be NULL for local symbols. */ | |
8128 | if (sym != NULL | |
9637f6ef | 8129 | && (h == elf_hash_table (info)->hdynamic |
a06ea964 NC |
8130 | || h == elf_hash_table (info)->hgot)) |
8131 | sym->st_shndx = SHN_ABS; | |
8132 | ||
8133 | return TRUE; | |
8134 | } | |
8135 | ||
1419bbe5 WN |
8136 | /* Finish up local dynamic symbol handling. We set the contents of |
8137 | various dynamic sections here. */ | |
8138 | ||
8139 | static bfd_boolean | |
8140 | elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf) | |
8141 | { | |
8142 | struct elf_link_hash_entry *h | |
8143 | = (struct elf_link_hash_entry *) *slot; | |
8144 | struct bfd_link_info *info | |
8145 | = (struct bfd_link_info *) inf; | |
8146 | ||
8147 | return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd, | |
8148 | info, h, NULL); | |
8149 | } | |
8150 | ||
a06ea964 | 8151 | static void |
cec5225b YZ |
8152 | elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED, |
8153 | struct elf_aarch64_link_hash_table | |
a06ea964 NC |
8154 | *htab) |
8155 | { | |
8156 | /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between | |
8157 | small and large plts and at the minute just generates | |
8158 | the small PLT. */ | |
8159 | ||
cec5225b | 8160 | /* PLT0 of the small PLT looks like this in ELF64 - |
a06ea964 NC |
8161 | stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack. |
8162 | adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT | |
8163 | ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the | |
8164 | // symbol resolver | |
8165 | add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the | |
8166 | // GOTPLT entry for this. | |
8167 | br x17 | |
cec5225b YZ |
8168 | PLT0 will be slightly different in ELF32 due to different got entry |
8169 | size. | |
a06ea964 | 8170 | */ |
caed7120 | 8171 | bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */ |
a06ea964 NC |
8172 | bfd_vma plt_base; |
8173 | ||
8174 | ||
cec5225b | 8175 | memcpy (htab->root.splt->contents, elfNN_aarch64_small_plt0_entry, |
a06ea964 NC |
8176 | PLT_ENTRY_SIZE); |
8177 | elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize = | |
8178 | PLT_ENTRY_SIZE; | |
8179 | ||
caed7120 YZ |
8180 | plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma |
8181 | + htab->root.sgotplt->output_offset | |
8182 | + GOT_ENTRY_SIZE * 2); | |
a06ea964 NC |
8183 | |
8184 | plt_base = htab->root.splt->output_section->vma + | |
f44a1f8e | 8185 | htab->root.splt->output_offset; |
a06ea964 NC |
8186 | |
8187 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
8188 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 YZ |
8189 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
8190 | htab->root.splt->contents + 4, | |
8191 | PG (plt_got_2nd_ent) - PG (plt_base + 4)); | |
a06ea964 | 8192 | |
caed7120 YZ |
8193 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
8194 | htab->root.splt->contents + 8, | |
8195 | PG_OFFSET (plt_got_2nd_ent)); | |
a06ea964 | 8196 | |
caed7120 YZ |
8197 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
8198 | htab->root.splt->contents + 12, | |
8199 | PG_OFFSET (plt_got_2nd_ent)); | |
a06ea964 NC |
8200 | } |
8201 | ||
8202 | static bfd_boolean | |
cec5225b | 8203 | elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd, |
a06ea964 NC |
8204 | struct bfd_link_info *info) |
8205 | { | |
cec5225b | 8206 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
8207 | bfd *dynobj; |
8208 | asection *sdyn; | |
8209 | ||
cec5225b | 8210 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
8211 | dynobj = htab->root.dynobj; |
8212 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); | |
8213 | ||
8214 | if (htab->root.dynamic_sections_created) | |
8215 | { | |
cec5225b | 8216 | ElfNN_External_Dyn *dyncon, *dynconend; |
a06ea964 NC |
8217 | |
8218 | if (sdyn == NULL || htab->root.sgot == NULL) | |
8219 | abort (); | |
8220 | ||
cec5225b YZ |
8221 | dyncon = (ElfNN_External_Dyn *) sdyn->contents; |
8222 | dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size); | |
a06ea964 NC |
8223 | for (; dyncon < dynconend; dyncon++) |
8224 | { | |
8225 | Elf_Internal_Dyn dyn; | |
8226 | asection *s; | |
8227 | ||
cec5225b | 8228 | bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn); |
a06ea964 NC |
8229 | |
8230 | switch (dyn.d_tag) | |
8231 | { | |
8232 | default: | |
8233 | continue; | |
8234 | ||
8235 | case DT_PLTGOT: | |
8236 | s = htab->root.sgotplt; | |
8237 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
8238 | break; | |
8239 | ||
8240 | case DT_JMPREL: | |
8241 | dyn.d_un.d_ptr = htab->root.srelplt->output_section->vma; | |
8242 | break; | |
8243 | ||
8244 | case DT_PLTRELSZ: | |
c955de36 | 8245 | s = htab->root.srelplt; |
a06ea964 NC |
8246 | dyn.d_un.d_val = s->size; |
8247 | break; | |
8248 | ||
8249 | case DT_RELASZ: | |
8250 | /* The procedure linkage table relocs (DT_JMPREL) should | |
8251 | not be included in the overall relocs (DT_RELA). | |
8252 | Therefore, we override the DT_RELASZ entry here to | |
8253 | make it not include the JMPREL relocs. Since the | |
8254 | linker script arranges for .rela.plt to follow all | |
8255 | other relocation sections, we don't have to worry | |
8256 | about changing the DT_RELA entry. */ | |
8257 | if (htab->root.srelplt != NULL) | |
8258 | { | |
c955de36 | 8259 | s = htab->root.srelplt; |
a06ea964 NC |
8260 | dyn.d_un.d_val -= s->size; |
8261 | } | |
8262 | break; | |
8263 | ||
8264 | case DT_TLSDESC_PLT: | |
8265 | s = htab->root.splt; | |
8266 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
8267 | + htab->tlsdesc_plt; | |
8268 | break; | |
8269 | ||
8270 | case DT_TLSDESC_GOT: | |
8271 | s = htab->root.sgot; | |
8272 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
8273 | + htab->dt_tlsdesc_got; | |
8274 | break; | |
8275 | } | |
8276 | ||
cec5225b | 8277 | bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon); |
a06ea964 NC |
8278 | } |
8279 | ||
8280 | } | |
8281 | ||
8282 | /* Fill in the special first entry in the procedure linkage table. */ | |
8283 | if (htab->root.splt && htab->root.splt->size > 0) | |
8284 | { | |
cec5225b | 8285 | elfNN_aarch64_init_small_plt0_entry (output_bfd, htab); |
a06ea964 NC |
8286 | |
8287 | elf_section_data (htab->root.splt->output_section)-> | |
8288 | this_hdr.sh_entsize = htab->plt_entry_size; | |
8289 | ||
8290 | ||
8291 | if (htab->tlsdesc_plt) | |
8292 | { | |
cec5225b | 8293 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
8294 | htab->root.sgot->contents + htab->dt_tlsdesc_got); |
8295 | ||
8296 | memcpy (htab->root.splt->contents + htab->tlsdesc_plt, | |
cec5225b YZ |
8297 | elfNN_aarch64_tlsdesc_small_plt_entry, |
8298 | sizeof (elfNN_aarch64_tlsdesc_small_plt_entry)); | |
a06ea964 NC |
8299 | |
8300 | { | |
8301 | bfd_vma adrp1_addr = | |
8302 | htab->root.splt->output_section->vma | |
8303 | + htab->root.splt->output_offset + htab->tlsdesc_plt + 4; | |
8304 | ||
caed7120 | 8305 | bfd_vma adrp2_addr = adrp1_addr + 4; |
a06ea964 NC |
8306 | |
8307 | bfd_vma got_addr = | |
8308 | htab->root.sgot->output_section->vma | |
8309 | + htab->root.sgot->output_offset; | |
8310 | ||
8311 | bfd_vma pltgot_addr = | |
8312 | htab->root.sgotplt->output_section->vma | |
8313 | + htab->root.sgotplt->output_offset; | |
8314 | ||
8315 | bfd_vma dt_tlsdesc_got = got_addr + htab->dt_tlsdesc_got; | |
caed7120 YZ |
8316 | |
8317 | bfd_byte *plt_entry = | |
8318 | htab->root.splt->contents + htab->tlsdesc_plt; | |
a06ea964 NC |
8319 | |
8320 | /* adrp x2, DT_TLSDESC_GOT */ | |
caed7120 YZ |
8321 | elf_aarch64_update_plt_entry (output_bfd, |
8322 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
8323 | plt_entry + 4, | |
8324 | (PG (dt_tlsdesc_got) | |
8325 | - PG (adrp1_addr))); | |
a06ea964 NC |
8326 | |
8327 | /* adrp x3, 0 */ | |
caed7120 YZ |
8328 | elf_aarch64_update_plt_entry (output_bfd, |
8329 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
8330 | plt_entry + 8, | |
8331 | (PG (pltgot_addr) | |
8332 | - PG (adrp2_addr))); | |
a06ea964 NC |
8333 | |
8334 | /* ldr x2, [x2, #0] */ | |
caed7120 YZ |
8335 | elf_aarch64_update_plt_entry (output_bfd, |
8336 | BFD_RELOC_AARCH64_LDSTNN_LO12, | |
8337 | plt_entry + 12, | |
8338 | PG_OFFSET (dt_tlsdesc_got)); | |
a06ea964 NC |
8339 | |
8340 | /* add x3, x3, 0 */ | |
caed7120 YZ |
8341 | elf_aarch64_update_plt_entry (output_bfd, |
8342 | BFD_RELOC_AARCH64_ADD_LO12, | |
8343 | plt_entry + 16, | |
8344 | PG_OFFSET (pltgot_addr)); | |
a06ea964 NC |
8345 | } |
8346 | } | |
8347 | } | |
8348 | ||
8349 | if (htab->root.sgotplt) | |
8350 | { | |
8351 | if (bfd_is_abs_section (htab->root.sgotplt->output_section)) | |
8352 | { | |
8353 | (*_bfd_error_handler) | |
8354 | (_("discarded output section: `%A'"), htab->root.sgotplt); | |
8355 | return FALSE; | |
8356 | } | |
8357 | ||
8358 | /* Fill in the first three entries in the global offset table. */ | |
8359 | if (htab->root.sgotplt->size > 0) | |
8360 | { | |
8db339a6 MS |
8361 | bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents); |
8362 | ||
a06ea964 | 8363 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ |
cec5225b | 8364 | bfd_put_NN (output_bfd, |
a06ea964 NC |
8365 | (bfd_vma) 0, |
8366 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE); | |
cec5225b | 8367 | bfd_put_NN (output_bfd, |
a06ea964 NC |
8368 | (bfd_vma) 0, |
8369 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2); | |
8370 | } | |
8371 | ||
8db339a6 MS |
8372 | if (htab->root.sgot) |
8373 | { | |
8374 | if (htab->root.sgot->size > 0) | |
8375 | { | |
8376 | bfd_vma addr = | |
8377 | sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0; | |
8378 | bfd_put_NN (output_bfd, addr, htab->root.sgot->contents); | |
8379 | } | |
8380 | } | |
8381 | ||
a06ea964 NC |
8382 | elf_section_data (htab->root.sgotplt->output_section)-> |
8383 | this_hdr.sh_entsize = GOT_ENTRY_SIZE; | |
8384 | } | |
8385 | ||
8386 | if (htab->root.sgot && htab->root.sgot->size > 0) | |
8387 | elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize | |
8388 | = GOT_ENTRY_SIZE; | |
8389 | ||
1419bbe5 WN |
8390 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
8391 | htab_traverse (htab->loc_hash_table, | |
8392 | elfNN_aarch64_finish_local_dynamic_symbol, | |
8393 | info); | |
8394 | ||
a06ea964 NC |
8395 | return TRUE; |
8396 | } | |
8397 | ||
8398 | /* Return address for Ith PLT stub in section PLT, for relocation REL | |
8399 | or (bfd_vma) -1 if it should not be included. */ | |
8400 | ||
8401 | static bfd_vma | |
cec5225b | 8402 | elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt, |
a06ea964 NC |
8403 | const arelent *rel ATTRIBUTE_UNUSED) |
8404 | { | |
8405 | return plt->vma + PLT_ENTRY_SIZE + i * PLT_SMALL_ENTRY_SIZE; | |
8406 | } | |
8407 | ||
8408 | ||
8409 | /* We use this so we can override certain functions | |
8410 | (though currently we don't). */ | |
8411 | ||
cec5225b | 8412 | const struct elf_size_info elfNN_aarch64_size_info = |
a06ea964 | 8413 | { |
cec5225b YZ |
8414 | sizeof (ElfNN_External_Ehdr), |
8415 | sizeof (ElfNN_External_Phdr), | |
8416 | sizeof (ElfNN_External_Shdr), | |
8417 | sizeof (ElfNN_External_Rel), | |
8418 | sizeof (ElfNN_External_Rela), | |
8419 | sizeof (ElfNN_External_Sym), | |
8420 | sizeof (ElfNN_External_Dyn), | |
a06ea964 NC |
8421 | sizeof (Elf_External_Note), |
8422 | 4, /* Hash table entry size. */ | |
8423 | 1, /* Internal relocs per external relocs. */ | |
cec5225b YZ |
8424 | ARCH_SIZE, /* Arch size. */ |
8425 | LOG_FILE_ALIGN, /* Log_file_align. */ | |
8426 | ELFCLASSNN, EV_CURRENT, | |
8427 | bfd_elfNN_write_out_phdrs, | |
8428 | bfd_elfNN_write_shdrs_and_ehdr, | |
8429 | bfd_elfNN_checksum_contents, | |
8430 | bfd_elfNN_write_relocs, | |
8431 | bfd_elfNN_swap_symbol_in, | |
8432 | bfd_elfNN_swap_symbol_out, | |
8433 | bfd_elfNN_slurp_reloc_table, | |
8434 | bfd_elfNN_slurp_symbol_table, | |
8435 | bfd_elfNN_swap_dyn_in, | |
8436 | bfd_elfNN_swap_dyn_out, | |
8437 | bfd_elfNN_swap_reloc_in, | |
8438 | bfd_elfNN_swap_reloc_out, | |
8439 | bfd_elfNN_swap_reloca_in, | |
8440 | bfd_elfNN_swap_reloca_out | |
a06ea964 NC |
8441 | }; |
8442 | ||
8443 | #define ELF_ARCH bfd_arch_aarch64 | |
8444 | #define ELF_MACHINE_CODE EM_AARCH64 | |
8445 | #define ELF_MAXPAGESIZE 0x10000 | |
8446 | #define ELF_MINPAGESIZE 0x1000 | |
8447 | #define ELF_COMMONPAGESIZE 0x1000 | |
8448 | ||
cec5225b YZ |
8449 | #define bfd_elfNN_close_and_cleanup \ |
8450 | elfNN_aarch64_close_and_cleanup | |
a06ea964 | 8451 | |
cec5225b YZ |
8452 | #define bfd_elfNN_bfd_free_cached_info \ |
8453 | elfNN_aarch64_bfd_free_cached_info | |
a06ea964 | 8454 | |
cec5225b YZ |
8455 | #define bfd_elfNN_bfd_is_target_special_symbol \ |
8456 | elfNN_aarch64_is_target_special_symbol | |
a06ea964 | 8457 | |
cec5225b YZ |
8458 | #define bfd_elfNN_bfd_link_hash_table_create \ |
8459 | elfNN_aarch64_link_hash_table_create | |
a06ea964 | 8460 | |
cec5225b YZ |
8461 | #define bfd_elfNN_bfd_merge_private_bfd_data \ |
8462 | elfNN_aarch64_merge_private_bfd_data | |
a06ea964 | 8463 | |
cec5225b YZ |
8464 | #define bfd_elfNN_bfd_print_private_bfd_data \ |
8465 | elfNN_aarch64_print_private_bfd_data | |
a06ea964 | 8466 | |
cec5225b YZ |
8467 | #define bfd_elfNN_bfd_reloc_type_lookup \ |
8468 | elfNN_aarch64_reloc_type_lookup | |
a06ea964 | 8469 | |
cec5225b YZ |
8470 | #define bfd_elfNN_bfd_reloc_name_lookup \ |
8471 | elfNN_aarch64_reloc_name_lookup | |
a06ea964 | 8472 | |
cec5225b YZ |
8473 | #define bfd_elfNN_bfd_set_private_flags \ |
8474 | elfNN_aarch64_set_private_flags | |
a06ea964 | 8475 | |
cec5225b YZ |
8476 | #define bfd_elfNN_find_inliner_info \ |
8477 | elfNN_aarch64_find_inliner_info | |
a06ea964 | 8478 | |
cec5225b YZ |
8479 | #define bfd_elfNN_find_nearest_line \ |
8480 | elfNN_aarch64_find_nearest_line | |
a06ea964 | 8481 | |
cec5225b YZ |
8482 | #define bfd_elfNN_mkobject \ |
8483 | elfNN_aarch64_mkobject | |
a06ea964 | 8484 | |
cec5225b YZ |
8485 | #define bfd_elfNN_new_section_hook \ |
8486 | elfNN_aarch64_new_section_hook | |
a06ea964 NC |
8487 | |
8488 | #define elf_backend_adjust_dynamic_symbol \ | |
cec5225b | 8489 | elfNN_aarch64_adjust_dynamic_symbol |
a06ea964 NC |
8490 | |
8491 | #define elf_backend_always_size_sections \ | |
cec5225b | 8492 | elfNN_aarch64_always_size_sections |
a06ea964 NC |
8493 | |
8494 | #define elf_backend_check_relocs \ | |
cec5225b | 8495 | elfNN_aarch64_check_relocs |
a06ea964 NC |
8496 | |
8497 | #define elf_backend_copy_indirect_symbol \ | |
cec5225b | 8498 | elfNN_aarch64_copy_indirect_symbol |
a06ea964 NC |
8499 | |
8500 | /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts | |
8501 | to them in our hash. */ | |
8502 | #define elf_backend_create_dynamic_sections \ | |
cec5225b | 8503 | elfNN_aarch64_create_dynamic_sections |
a06ea964 NC |
8504 | |
8505 | #define elf_backend_init_index_section \ | |
8506 | _bfd_elf_init_2_index_sections | |
8507 | ||
a06ea964 | 8508 | #define elf_backend_finish_dynamic_sections \ |
cec5225b | 8509 | elfNN_aarch64_finish_dynamic_sections |
a06ea964 NC |
8510 | |
8511 | #define elf_backend_finish_dynamic_symbol \ | |
cec5225b | 8512 | elfNN_aarch64_finish_dynamic_symbol |
a06ea964 NC |
8513 | |
8514 | #define elf_backend_gc_sweep_hook \ | |
cec5225b | 8515 | elfNN_aarch64_gc_sweep_hook |
a06ea964 NC |
8516 | |
8517 | #define elf_backend_object_p \ | |
cec5225b | 8518 | elfNN_aarch64_object_p |
a06ea964 NC |
8519 | |
8520 | #define elf_backend_output_arch_local_syms \ | |
cec5225b | 8521 | elfNN_aarch64_output_arch_local_syms |
a06ea964 NC |
8522 | |
8523 | #define elf_backend_plt_sym_val \ | |
cec5225b | 8524 | elfNN_aarch64_plt_sym_val |
a06ea964 NC |
8525 | |
8526 | #define elf_backend_post_process_headers \ | |
cec5225b | 8527 | elfNN_aarch64_post_process_headers |
a06ea964 NC |
8528 | |
8529 | #define elf_backend_relocate_section \ | |
cec5225b | 8530 | elfNN_aarch64_relocate_section |
a06ea964 NC |
8531 | |
8532 | #define elf_backend_reloc_type_class \ | |
cec5225b | 8533 | elfNN_aarch64_reloc_type_class |
a06ea964 | 8534 | |
a06ea964 | 8535 | #define elf_backend_section_from_shdr \ |
cec5225b | 8536 | elfNN_aarch64_section_from_shdr |
a06ea964 NC |
8537 | |
8538 | #define elf_backend_size_dynamic_sections \ | |
cec5225b | 8539 | elfNN_aarch64_size_dynamic_sections |
a06ea964 NC |
8540 | |
8541 | #define elf_backend_size_info \ | |
cec5225b | 8542 | elfNN_aarch64_size_info |
a06ea964 | 8543 | |
68fcca92 JW |
8544 | #define elf_backend_write_section \ |
8545 | elfNN_aarch64_write_section | |
8546 | ||
a06ea964 | 8547 | #define elf_backend_can_refcount 1 |
59c108f7 | 8548 | #define elf_backend_can_gc_sections 1 |
a06ea964 NC |
8549 | #define elf_backend_plt_readonly 1 |
8550 | #define elf_backend_want_got_plt 1 | |
8551 | #define elf_backend_want_plt_sym 0 | |
8552 | #define elf_backend_may_use_rel_p 0 | |
8553 | #define elf_backend_may_use_rela_p 1 | |
8554 | #define elf_backend_default_use_rela_p 1 | |
2e0488d3 | 8555 | #define elf_backend_rela_normal 1 |
a06ea964 | 8556 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3) |
c495064d | 8557 | #define elf_backend_default_execstack 0 |
a06ea964 NC |
8558 | |
8559 | #undef elf_backend_obj_attrs_section | |
8560 | #define elf_backend_obj_attrs_section ".ARM.attributes" | |
8561 | ||
cec5225b | 8562 | #include "elfNN-target.h" |