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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 | |
87f5fbcc RL |
851 | /* LD64: GOT offset for the symbol. */ |
852 | HOWTO64 (AARCH64_R (LD64_GOTOFF_LO15), /* type */ | |
853 | 3, /* rightshift */ | |
854 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
855 | 12, /* bitsize */ | |
856 | FALSE, /* pc_relative */ | |
857 | 0, /* bitpos */ | |
858 | complain_overflow_unsigned, /* complain_on_overflow */ | |
859 | bfd_elf_generic_reloc, /* special_function */ | |
860 | AARCH64_R_STR (LD64_GOTOFF_LO15), /* name */ | |
861 | FALSE, /* partial_inplace */ | |
862 | 0x7ff8, /* src_mask */ | |
863 | 0x7ff8, /* dst_mask */ | |
864 | FALSE), /* pcrel_offset */ | |
865 | ||
3d715ce4 JW |
866 | /* LD32: GOT offset to the page address of GOT table. |
867 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x5ffc. */ | |
868 | HOWTO32 (AARCH64_R (LD32_GOTPAGE_LO14), /* type */ | |
869 | 2, /* rightshift */ | |
870 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
871 | 12, /* bitsize */ | |
872 | FALSE, /* pc_relative */ | |
873 | 0, /* bitpos */ | |
874 | complain_overflow_unsigned, /* complain_on_overflow */ | |
875 | bfd_elf_generic_reloc, /* special_function */ | |
876 | AARCH64_R_STR (LD32_GOTPAGE_LO14), /* name */ | |
877 | FALSE, /* partial_inplace */ | |
878 | 0x5ffc, /* src_mask */ | |
879 | 0x5ffc, /* dst_mask */ | |
880 | FALSE), /* pcrel_offset */ | |
881 | ||
a921b5bd JW |
882 | /* LD64: GOT offset to the page address of GOT table. |
883 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */ | |
884 | HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15), /* type */ | |
885 | 3, /* rightshift */ | |
886 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
887 | 12, /* bitsize */ | |
888 | FALSE, /* pc_relative */ | |
889 | 0, /* bitpos */ | |
890 | complain_overflow_unsigned, /* complain_on_overflow */ | |
891 | bfd_elf_generic_reloc, /* special_function */ | |
892 | AARCH64_R_STR (LD64_GOTPAGE_LO15), /* name */ | |
893 | FALSE, /* partial_inplace */ | |
894 | 0x7ff8, /* src_mask */ | |
895 | 0x7ff8, /* dst_mask */ | |
896 | FALSE), /* pcrel_offset */ | |
897 | ||
a06ea964 NC |
898 | /* Get to the page for the GOT entry for the symbol |
899 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 900 | HOWTO (AARCH64_R (TLSGD_ADR_PAGE21), /* type */ |
a06ea964 NC |
901 | 12, /* rightshift */ |
902 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
903 | 21, /* bitsize */ | |
904 | TRUE, /* pc_relative */ | |
905 | 0, /* bitpos */ | |
906 | complain_overflow_dont, /* complain_on_overflow */ | |
907 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 908 | AARCH64_R_STR (TLSGD_ADR_PAGE21), /* name */ |
a06ea964 NC |
909 | FALSE, /* partial_inplace */ |
910 | 0x1fffff, /* src_mask */ | |
911 | 0x1fffff, /* dst_mask */ | |
912 | TRUE), /* pcrel_offset */ | |
913 | ||
3c12b054 MS |
914 | HOWTO (AARCH64_R (TLSGD_ADR_PREL21), /* type */ |
915 | 0, /* rightshift */ | |
916 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
917 | 21, /* bitsize */ | |
918 | TRUE, /* pc_relative */ | |
919 | 0, /* bitpos */ | |
920 | complain_overflow_dont, /* complain_on_overflow */ | |
921 | bfd_elf_generic_reloc, /* special_function */ | |
922 | AARCH64_R_STR (TLSGD_ADR_PREL21), /* name */ | |
923 | FALSE, /* partial_inplace */ | |
924 | 0x1fffff, /* src_mask */ | |
925 | 0x1fffff, /* dst_mask */ | |
926 | TRUE), /* pcrel_offset */ | |
927 | ||
a06ea964 | 928 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ |
a6bb11b2 | 929 | HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC), /* type */ |
a06ea964 NC |
930 | 0, /* rightshift */ |
931 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
932 | 12, /* bitsize */ | |
933 | FALSE, /* pc_relative */ | |
934 | 0, /* bitpos */ | |
935 | complain_overflow_dont, /* complain_on_overflow */ | |
936 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 937 | AARCH64_R_STR (TLSGD_ADD_LO12_NC), /* name */ |
a06ea964 NC |
938 | FALSE, /* partial_inplace */ |
939 | 0xfff, /* src_mask */ | |
940 | 0xfff, /* dst_mask */ | |
941 | FALSE), /* pcrel_offset */ | |
942 | ||
a6bb11b2 | 943 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1), /* type */ |
a06ea964 NC |
944 | 16, /* rightshift */ |
945 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
946 | 16, /* bitsize */ | |
947 | FALSE, /* pc_relative */ | |
948 | 0, /* bitpos */ | |
949 | complain_overflow_dont, /* complain_on_overflow */ | |
950 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 951 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1), /* name */ |
a06ea964 NC |
952 | FALSE, /* partial_inplace */ |
953 | 0xffff, /* src_mask */ | |
954 | 0xffff, /* dst_mask */ | |
955 | FALSE), /* pcrel_offset */ | |
956 | ||
a6bb11b2 | 957 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */ |
a06ea964 NC |
958 | 0, /* rightshift */ |
959 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
49d8f92c | 960 | 16, /* bitsize */ |
a06ea964 NC |
961 | FALSE, /* pc_relative */ |
962 | 0, /* bitpos */ | |
963 | complain_overflow_dont, /* complain_on_overflow */ | |
964 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 965 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC), /* name */ |
a06ea964 NC |
966 | FALSE, /* partial_inplace */ |
967 | 0xffff, /* src_mask */ | |
968 | 0xffff, /* dst_mask */ | |
969 | FALSE), /* pcrel_offset */ | |
970 | ||
a6bb11b2 | 971 | HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21), /* type */ |
a06ea964 NC |
972 | 12, /* rightshift */ |
973 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
974 | 21, /* bitsize */ | |
975 | FALSE, /* pc_relative */ | |
976 | 0, /* bitpos */ | |
977 | complain_overflow_dont, /* complain_on_overflow */ | |
978 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 979 | AARCH64_R_STR (TLSIE_ADR_GOTTPREL_PAGE21), /* name */ |
a06ea964 NC |
980 | FALSE, /* partial_inplace */ |
981 | 0x1fffff, /* src_mask */ | |
982 | 0x1fffff, /* dst_mask */ | |
983 | FALSE), /* pcrel_offset */ | |
984 | ||
a6bb11b2 | 985 | HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC), /* type */ |
a06ea964 NC |
986 | 3, /* rightshift */ |
987 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
988 | 12, /* bitsize */ | |
989 | FALSE, /* pc_relative */ | |
990 | 0, /* bitpos */ | |
991 | complain_overflow_dont, /* complain_on_overflow */ | |
992 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 993 | AARCH64_R_STR (TLSIE_LD64_GOTTPREL_LO12_NC), /* name */ |
a06ea964 NC |
994 | FALSE, /* partial_inplace */ |
995 | 0xff8, /* src_mask */ | |
996 | 0xff8, /* dst_mask */ | |
997 | FALSE), /* pcrel_offset */ | |
998 | ||
a6bb11b2 YZ |
999 | HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC), /* type */ |
1000 | 2, /* rightshift */ | |
1001 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1002 | 12, /* bitsize */ | |
1003 | FALSE, /* pc_relative */ | |
1004 | 0, /* bitpos */ | |
1005 | complain_overflow_dont, /* complain_on_overflow */ | |
1006 | bfd_elf_generic_reloc, /* special_function */ | |
1007 | AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC), /* name */ | |
1008 | FALSE, /* partial_inplace */ | |
1009 | 0xffc, /* src_mask */ | |
1010 | 0xffc, /* dst_mask */ | |
1011 | FALSE), /* pcrel_offset */ | |
1012 | ||
1013 | HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19), /* type */ | |
bb3f9ed8 | 1014 | 2, /* rightshift */ |
a06ea964 | 1015 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
043bf05a | 1016 | 19, /* bitsize */ |
a06ea964 NC |
1017 | FALSE, /* pc_relative */ |
1018 | 0, /* bitpos */ | |
1019 | complain_overflow_dont, /* complain_on_overflow */ | |
1020 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1021 | AARCH64_R_STR (TLSIE_LD_GOTTPREL_PREL19), /* name */ |
a06ea964 NC |
1022 | FALSE, /* partial_inplace */ |
1023 | 0x1ffffc, /* src_mask */ | |
1024 | 0x1ffffc, /* dst_mask */ | |
1025 | FALSE), /* pcrel_offset */ | |
1026 | ||
a6bb11b2 | 1027 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2), /* type */ |
bb3f9ed8 | 1028 | 32, /* rightshift */ |
a06ea964 | 1029 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1030 | 16, /* bitsize */ |
a06ea964 NC |
1031 | FALSE, /* pc_relative */ |
1032 | 0, /* bitpos */ | |
0172429c | 1033 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1034 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1035 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G2), /* name */ |
a06ea964 NC |
1036 | FALSE, /* partial_inplace */ |
1037 | 0xffff, /* src_mask */ | |
1038 | 0xffff, /* dst_mask */ | |
1039 | FALSE), /* pcrel_offset */ | |
1040 | ||
a6bb11b2 | 1041 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1), /* type */ |
bb3f9ed8 | 1042 | 16, /* rightshift */ |
a06ea964 | 1043 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1044 | 16, /* bitsize */ |
a06ea964 NC |
1045 | FALSE, /* pc_relative */ |
1046 | 0, /* bitpos */ | |
1047 | complain_overflow_dont, /* complain_on_overflow */ | |
1048 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1049 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1), /* name */ |
a06ea964 NC |
1050 | FALSE, /* partial_inplace */ |
1051 | 0xffff, /* src_mask */ | |
1052 | 0xffff, /* dst_mask */ | |
1053 | FALSE), /* pcrel_offset */ | |
1054 | ||
a6bb11b2 | 1055 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */ |
bb3f9ed8 | 1056 | 16, /* rightshift */ |
a06ea964 | 1057 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1058 | 16, /* bitsize */ |
a06ea964 NC |
1059 | FALSE, /* pc_relative */ |
1060 | 0, /* bitpos */ | |
1061 | complain_overflow_dont, /* complain_on_overflow */ | |
1062 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1063 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC), /* name */ |
a06ea964 NC |
1064 | FALSE, /* partial_inplace */ |
1065 | 0xffff, /* src_mask */ | |
1066 | 0xffff, /* dst_mask */ | |
1067 | FALSE), /* pcrel_offset */ | |
1068 | ||
a6bb11b2 | 1069 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0), /* type */ |
a06ea964 NC |
1070 | 0, /* rightshift */ |
1071 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
07875fbc | 1072 | 16, /* bitsize */ |
a06ea964 NC |
1073 | FALSE, /* pc_relative */ |
1074 | 0, /* bitpos */ | |
1075 | complain_overflow_dont, /* complain_on_overflow */ | |
1076 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1077 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0), /* name */ |
a06ea964 NC |
1078 | FALSE, /* partial_inplace */ |
1079 | 0xffff, /* src_mask */ | |
1080 | 0xffff, /* dst_mask */ | |
1081 | FALSE), /* pcrel_offset */ | |
1082 | ||
a6bb11b2 | 1083 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC), /* type */ |
a06ea964 NC |
1084 | 0, /* rightshift */ |
1085 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
07875fbc | 1086 | 16, /* bitsize */ |
a06ea964 NC |
1087 | FALSE, /* pc_relative */ |
1088 | 0, /* bitpos */ | |
1089 | complain_overflow_dont, /* complain_on_overflow */ | |
1090 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1091 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC), /* name */ |
a06ea964 NC |
1092 | FALSE, /* partial_inplace */ |
1093 | 0xffff, /* src_mask */ | |
1094 | 0xffff, /* dst_mask */ | |
1095 | FALSE), /* pcrel_offset */ | |
1096 | ||
a6bb11b2 | 1097 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12), /* type */ |
bb3f9ed8 | 1098 | 12, /* rightshift */ |
a06ea964 NC |
1099 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1100 | 12, /* bitsize */ | |
1101 | FALSE, /* pc_relative */ | |
1102 | 0, /* bitpos */ | |
bab91cce | 1103 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1104 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1105 | AARCH64_R_STR (TLSLE_ADD_TPREL_HI12), /* name */ |
a06ea964 NC |
1106 | FALSE, /* partial_inplace */ |
1107 | 0xfff, /* src_mask */ | |
1108 | 0xfff, /* dst_mask */ | |
1109 | FALSE), /* pcrel_offset */ | |
1110 | ||
a6bb11b2 | 1111 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12), /* type */ |
a06ea964 NC |
1112 | 0, /* rightshift */ |
1113 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1114 | 12, /* bitsize */ | |
1115 | FALSE, /* pc_relative */ | |
1116 | 0, /* bitpos */ | |
36e6c140 | 1117 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1118 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1119 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12), /* name */ |
a06ea964 NC |
1120 | FALSE, /* partial_inplace */ |
1121 | 0xfff, /* src_mask */ | |
1122 | 0xfff, /* dst_mask */ | |
1123 | FALSE), /* pcrel_offset */ | |
1124 | ||
a6bb11b2 | 1125 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC), /* type */ |
a06ea964 NC |
1126 | 0, /* rightshift */ |
1127 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1128 | 12, /* bitsize */ | |
1129 | FALSE, /* pc_relative */ | |
1130 | 0, /* bitpos */ | |
1131 | complain_overflow_dont, /* complain_on_overflow */ | |
1132 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1133 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC), /* name */ |
a06ea964 NC |
1134 | FALSE, /* partial_inplace */ |
1135 | 0xfff, /* src_mask */ | |
1136 | 0xfff, /* dst_mask */ | |
1137 | FALSE), /* pcrel_offset */ | |
a06ea964 | 1138 | |
a6bb11b2 | 1139 | HOWTO (AARCH64_R (TLSDESC_LD_PREL19), /* type */ |
bb3f9ed8 | 1140 | 2, /* rightshift */ |
a06ea964 | 1141 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1ada945d | 1142 | 19, /* bitsize */ |
a06ea964 NC |
1143 | TRUE, /* pc_relative */ |
1144 | 0, /* bitpos */ | |
1145 | complain_overflow_dont, /* complain_on_overflow */ | |
1146 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1147 | AARCH64_R_STR (TLSDESC_LD_PREL19), /* name */ |
a06ea964 | 1148 | FALSE, /* partial_inplace */ |
1ada945d MS |
1149 | 0x0ffffe0, /* src_mask */ |
1150 | 0x0ffffe0, /* dst_mask */ | |
a06ea964 NC |
1151 | TRUE), /* pcrel_offset */ |
1152 | ||
a6bb11b2 | 1153 | HOWTO (AARCH64_R (TLSDESC_ADR_PREL21), /* type */ |
a06ea964 NC |
1154 | 0, /* rightshift */ |
1155 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1156 | 21, /* bitsize */ | |
1157 | TRUE, /* 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_ADR_PREL21), /* name */ |
a06ea964 NC |
1162 | FALSE, /* partial_inplace */ |
1163 | 0x1fffff, /* src_mask */ | |
1164 | 0x1fffff, /* dst_mask */ | |
1165 | TRUE), /* pcrel_offset */ | |
1166 | ||
1167 | /* Get to the page for the GOT entry for the symbol | |
1168 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 1169 | HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21), /* type */ |
a06ea964 NC |
1170 | 12, /* rightshift */ |
1171 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1172 | 21, /* bitsize */ | |
1173 | TRUE, /* pc_relative */ | |
1174 | 0, /* bitpos */ | |
1175 | complain_overflow_dont, /* complain_on_overflow */ | |
1176 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1177 | AARCH64_R_STR (TLSDESC_ADR_PAGE21), /* name */ |
a06ea964 NC |
1178 | FALSE, /* partial_inplace */ |
1179 | 0x1fffff, /* src_mask */ | |
1180 | 0x1fffff, /* dst_mask */ | |
1181 | TRUE), /* pcrel_offset */ | |
1182 | ||
a6bb11b2 YZ |
1183 | /* LD64: GOT offset G(S) & 0xff8. */ |
1184 | HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12_NC), /* type */ | |
a06ea964 NC |
1185 | 3, /* rightshift */ |
1186 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1187 | 12, /* bitsize */ | |
1188 | FALSE, /* pc_relative */ | |
1189 | 0, /* bitpos */ | |
1190 | complain_overflow_dont, /* complain_on_overflow */ | |
1191 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1192 | AARCH64_R_STR (TLSDESC_LD64_LO12_NC), /* name */ |
a06ea964 | 1193 | FALSE, /* partial_inplace */ |
a6bb11b2 YZ |
1194 | 0xff8, /* src_mask */ |
1195 | 0xff8, /* dst_mask */ | |
1196 | FALSE), /* pcrel_offset */ | |
1197 | ||
1198 | /* LD32: GOT offset G(S) & 0xffc. */ | |
1199 | HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC), /* type */ | |
1200 | 2, /* rightshift */ | |
1201 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1202 | 12, /* bitsize */ | |
1203 | FALSE, /* pc_relative */ | |
1204 | 0, /* bitpos */ | |
1205 | complain_overflow_dont, /* complain_on_overflow */ | |
1206 | bfd_elf_generic_reloc, /* special_function */ | |
1207 | AARCH64_R_STR (TLSDESC_LD32_LO12_NC), /* name */ | |
1208 | FALSE, /* partial_inplace */ | |
1209 | 0xffc, /* src_mask */ | |
1210 | 0xffc, /* dst_mask */ | |
a06ea964 NC |
1211 | FALSE), /* pcrel_offset */ |
1212 | ||
1213 | /* ADD: GOT offset G(S) & 0xfff. */ | |
a6bb11b2 | 1214 | HOWTO (AARCH64_R (TLSDESC_ADD_LO12_NC), /* type */ |
a06ea964 NC |
1215 | 0, /* rightshift */ |
1216 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1217 | 12, /* bitsize */ | |
1218 | FALSE, /* pc_relative */ | |
1219 | 0, /* bitpos */ | |
1220 | complain_overflow_dont, /* complain_on_overflow */ | |
1221 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1222 | AARCH64_R_STR (TLSDESC_ADD_LO12_NC), /* name */ |
a06ea964 NC |
1223 | FALSE, /* partial_inplace */ |
1224 | 0xfff, /* src_mask */ | |
1225 | 0xfff, /* dst_mask */ | |
1226 | FALSE), /* pcrel_offset */ | |
1227 | ||
a6bb11b2 | 1228 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G1), /* type */ |
bb3f9ed8 | 1229 | 16, /* rightshift */ |
a06ea964 NC |
1230 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1231 | 12, /* bitsize */ | |
1232 | FALSE, /* pc_relative */ | |
1233 | 0, /* bitpos */ | |
1234 | complain_overflow_dont, /* complain_on_overflow */ | |
1235 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1236 | AARCH64_R_STR (TLSDESC_OFF_G1), /* name */ |
a06ea964 NC |
1237 | FALSE, /* partial_inplace */ |
1238 | 0xffff, /* src_mask */ | |
1239 | 0xffff, /* dst_mask */ | |
1240 | FALSE), /* pcrel_offset */ | |
1241 | ||
a6bb11b2 | 1242 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC), /* type */ |
a06ea964 NC |
1243 | 0, /* rightshift */ |
1244 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1245 | 12, /* bitsize */ | |
1246 | FALSE, /* pc_relative */ | |
1247 | 0, /* bitpos */ | |
1248 | complain_overflow_dont, /* complain_on_overflow */ | |
1249 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1250 | AARCH64_R_STR (TLSDESC_OFF_G0_NC), /* name */ |
a06ea964 NC |
1251 | FALSE, /* partial_inplace */ |
1252 | 0xffff, /* src_mask */ | |
1253 | 0xffff, /* dst_mask */ | |
1254 | FALSE), /* pcrel_offset */ | |
1255 | ||
a6bb11b2 | 1256 | HOWTO64 (AARCH64_R (TLSDESC_LDR), /* type */ |
a06ea964 NC |
1257 | 0, /* rightshift */ |
1258 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1259 | 12, /* bitsize */ | |
1260 | FALSE, /* pc_relative */ | |
1261 | 0, /* bitpos */ | |
1262 | complain_overflow_dont, /* complain_on_overflow */ | |
1263 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1264 | AARCH64_R_STR (TLSDESC_LDR), /* name */ |
a06ea964 NC |
1265 | FALSE, /* partial_inplace */ |
1266 | 0x0, /* src_mask */ | |
1267 | 0x0, /* dst_mask */ | |
1268 | FALSE), /* pcrel_offset */ | |
1269 | ||
a6bb11b2 | 1270 | HOWTO64 (AARCH64_R (TLSDESC_ADD), /* type */ |
a06ea964 NC |
1271 | 0, /* rightshift */ |
1272 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1273 | 12, /* bitsize */ | |
1274 | FALSE, /* pc_relative */ | |
1275 | 0, /* bitpos */ | |
1276 | complain_overflow_dont, /* complain_on_overflow */ | |
1277 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1278 | AARCH64_R_STR (TLSDESC_ADD), /* name */ |
a06ea964 NC |
1279 | FALSE, /* partial_inplace */ |
1280 | 0x0, /* src_mask */ | |
1281 | 0x0, /* dst_mask */ | |
1282 | FALSE), /* pcrel_offset */ | |
1283 | ||
a6bb11b2 | 1284 | HOWTO (AARCH64_R (TLSDESC_CALL), /* type */ |
a06ea964 NC |
1285 | 0, /* rightshift */ |
1286 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
7366006f | 1287 | 0, /* bitsize */ |
a06ea964 NC |
1288 | FALSE, /* pc_relative */ |
1289 | 0, /* bitpos */ | |
1290 | complain_overflow_dont, /* complain_on_overflow */ | |
1291 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1292 | AARCH64_R_STR (TLSDESC_CALL), /* name */ |
a06ea964 NC |
1293 | FALSE, /* partial_inplace */ |
1294 | 0x0, /* src_mask */ | |
1295 | 0x0, /* dst_mask */ | |
1296 | FALSE), /* pcrel_offset */ | |
a6bb11b2 YZ |
1297 | |
1298 | HOWTO (AARCH64_R (COPY), /* type */ | |
1299 | 0, /* rightshift */ | |
1300 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1301 | 64, /* bitsize */ | |
1302 | FALSE, /* pc_relative */ | |
1303 | 0, /* bitpos */ | |
1304 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1305 | bfd_elf_generic_reloc, /* special_function */ | |
1306 | AARCH64_R_STR (COPY), /* name */ | |
1307 | TRUE, /* partial_inplace */ | |
1308 | 0xffffffff, /* src_mask */ | |
1309 | 0xffffffff, /* dst_mask */ | |
1310 | FALSE), /* pcrel_offset */ | |
1311 | ||
1312 | HOWTO (AARCH64_R (GLOB_DAT), /* type */ | |
1313 | 0, /* rightshift */ | |
1314 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1315 | 64, /* bitsize */ | |
1316 | FALSE, /* pc_relative */ | |
1317 | 0, /* bitpos */ | |
1318 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1319 | bfd_elf_generic_reloc, /* special_function */ | |
1320 | AARCH64_R_STR (GLOB_DAT), /* name */ | |
1321 | TRUE, /* partial_inplace */ | |
1322 | 0xffffffff, /* src_mask */ | |
1323 | 0xffffffff, /* dst_mask */ | |
1324 | FALSE), /* pcrel_offset */ | |
1325 | ||
1326 | HOWTO (AARCH64_R (JUMP_SLOT), /* type */ | |
1327 | 0, /* rightshift */ | |
1328 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1329 | 64, /* bitsize */ | |
1330 | FALSE, /* pc_relative */ | |
1331 | 0, /* bitpos */ | |
1332 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1333 | bfd_elf_generic_reloc, /* special_function */ | |
1334 | AARCH64_R_STR (JUMP_SLOT), /* name */ | |
1335 | TRUE, /* partial_inplace */ | |
1336 | 0xffffffff, /* src_mask */ | |
1337 | 0xffffffff, /* dst_mask */ | |
1338 | FALSE), /* pcrel_offset */ | |
1339 | ||
1340 | HOWTO (AARCH64_R (RELATIVE), /* type */ | |
1341 | 0, /* rightshift */ | |
1342 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1343 | 64, /* bitsize */ | |
1344 | FALSE, /* pc_relative */ | |
1345 | 0, /* bitpos */ | |
1346 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1347 | bfd_elf_generic_reloc, /* special_function */ | |
1348 | AARCH64_R_STR (RELATIVE), /* name */ | |
1349 | TRUE, /* partial_inplace */ | |
1350 | ALL_ONES, /* src_mask */ | |
1351 | ALL_ONES, /* dst_mask */ | |
1352 | FALSE), /* pcrel_offset */ | |
1353 | ||
1354 | HOWTO (AARCH64_R (TLS_DTPMOD), /* type */ | |
1355 | 0, /* rightshift */ | |
1356 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1357 | 64, /* bitsize */ | |
1358 | FALSE, /* pc_relative */ | |
1359 | 0, /* bitpos */ | |
1360 | complain_overflow_dont, /* complain_on_overflow */ | |
1361 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
1362 | #if ARCH_SIZE == 64 |
1363 | AARCH64_R_STR (TLS_DTPMOD64), /* name */ | |
1364 | #else | |
a6bb11b2 | 1365 | AARCH64_R_STR (TLS_DTPMOD), /* name */ |
da0781dc | 1366 | #endif |
a6bb11b2 YZ |
1367 | FALSE, /* partial_inplace */ |
1368 | 0, /* src_mask */ | |
1369 | ALL_ONES, /* dst_mask */ | |
1370 | FALSE), /* pc_reloffset */ | |
1371 | ||
1372 | HOWTO (AARCH64_R (TLS_DTPREL), /* type */ | |
1373 | 0, /* rightshift */ | |
1374 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1375 | 64, /* bitsize */ | |
1376 | FALSE, /* pc_relative */ | |
1377 | 0, /* bitpos */ | |
1378 | complain_overflow_dont, /* complain_on_overflow */ | |
1379 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
1380 | #if ARCH_SIZE == 64 |
1381 | AARCH64_R_STR (TLS_DTPREL64), /* name */ | |
1382 | #else | |
a6bb11b2 | 1383 | AARCH64_R_STR (TLS_DTPREL), /* name */ |
da0781dc | 1384 | #endif |
a6bb11b2 YZ |
1385 | FALSE, /* partial_inplace */ |
1386 | 0, /* src_mask */ | |
1387 | ALL_ONES, /* dst_mask */ | |
1388 | FALSE), /* pcrel_offset */ | |
1389 | ||
1390 | HOWTO (AARCH64_R (TLS_TPREL), /* type */ | |
1391 | 0, /* rightshift */ | |
1392 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1393 | 64, /* bitsize */ | |
1394 | FALSE, /* pc_relative */ | |
1395 | 0, /* bitpos */ | |
1396 | complain_overflow_dont, /* complain_on_overflow */ | |
1397 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
1398 | #if ARCH_SIZE == 64 |
1399 | AARCH64_R_STR (TLS_TPREL64), /* name */ | |
1400 | #else | |
a6bb11b2 | 1401 | AARCH64_R_STR (TLS_TPREL), /* name */ |
da0781dc | 1402 | #endif |
a6bb11b2 YZ |
1403 | FALSE, /* partial_inplace */ |
1404 | 0, /* src_mask */ | |
1405 | ALL_ONES, /* dst_mask */ | |
1406 | FALSE), /* pcrel_offset */ | |
1407 | ||
1408 | HOWTO (AARCH64_R (TLSDESC), /* type */ | |
1409 | 0, /* rightshift */ | |
1410 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1411 | 64, /* bitsize */ | |
1412 | FALSE, /* pc_relative */ | |
1413 | 0, /* bitpos */ | |
1414 | complain_overflow_dont, /* complain_on_overflow */ | |
1415 | bfd_elf_generic_reloc, /* special_function */ | |
1416 | AARCH64_R_STR (TLSDESC), /* name */ | |
1417 | FALSE, /* partial_inplace */ | |
1418 | 0, /* src_mask */ | |
1419 | ALL_ONES, /* dst_mask */ | |
1420 | FALSE), /* pcrel_offset */ | |
1421 | ||
1422 | HOWTO (AARCH64_R (IRELATIVE), /* type */ | |
1423 | 0, /* rightshift */ | |
1424 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1425 | 64, /* bitsize */ | |
1426 | FALSE, /* pc_relative */ | |
1427 | 0, /* bitpos */ | |
1428 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1429 | bfd_elf_generic_reloc, /* special_function */ | |
1430 | AARCH64_R_STR (IRELATIVE), /* name */ | |
1431 | FALSE, /* partial_inplace */ | |
1432 | 0, /* src_mask */ | |
1433 | ALL_ONES, /* dst_mask */ | |
1434 | FALSE), /* pcrel_offset */ | |
1435 | ||
1436 | EMPTY_HOWTO (0), | |
a06ea964 NC |
1437 | }; |
1438 | ||
a6bb11b2 YZ |
1439 | static reloc_howto_type elfNN_aarch64_howto_none = |
1440 | HOWTO (R_AARCH64_NONE, /* type */ | |
1441 | 0, /* rightshift */ | |
6346d5ca | 1442 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a6bb11b2 YZ |
1443 | 0, /* bitsize */ |
1444 | FALSE, /* pc_relative */ | |
1445 | 0, /* bitpos */ | |
1446 | complain_overflow_dont,/* complain_on_overflow */ | |
1447 | bfd_elf_generic_reloc, /* special_function */ | |
1448 | "R_AARCH64_NONE", /* name */ | |
1449 | FALSE, /* partial_inplace */ | |
1450 | 0, /* src_mask */ | |
1451 | 0, /* dst_mask */ | |
1452 | FALSE); /* pcrel_offset */ | |
1453 | ||
1454 | /* Given HOWTO, return the bfd internal relocation enumerator. */ | |
1455 | ||
1456 | static bfd_reloc_code_real_type | |
1457 | elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type *howto) | |
1458 | { | |
1459 | const int size | |
1460 | = (int) ARRAY_SIZE (elfNN_aarch64_howto_table); | |
1461 | const ptrdiff_t offset | |
1462 | = howto - elfNN_aarch64_howto_table; | |
1463 | ||
1464 | if (offset > 0 && offset < size - 1) | |
1465 | return BFD_RELOC_AARCH64_RELOC_START + offset; | |
1466 | ||
1467 | if (howto == &elfNN_aarch64_howto_none) | |
1468 | return BFD_RELOC_AARCH64_NONE; | |
1469 | ||
1470 | return BFD_RELOC_AARCH64_RELOC_START; | |
1471 | } | |
1472 | ||
1473 | /* Given R_TYPE, return the bfd internal relocation enumerator. */ | |
1474 | ||
1475 | static bfd_reloc_code_real_type | |
1476 | elfNN_aarch64_bfd_reloc_from_type (unsigned int r_type) | |
1477 | { | |
1478 | static bfd_boolean initialized_p = FALSE; | |
1479 | /* Indexed by R_TYPE, values are offsets in the howto_table. */ | |
1480 | static unsigned int offsets[R_AARCH64_end]; | |
1481 | ||
1482 | if (initialized_p == FALSE) | |
1483 | { | |
1484 | unsigned int i; | |
1485 | ||
1486 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) | |
1487 | if (elfNN_aarch64_howto_table[i].type != 0) | |
1488 | offsets[elfNN_aarch64_howto_table[i].type] = i; | |
1489 | ||
1490 | initialized_p = TRUE; | |
1491 | } | |
1492 | ||
1493 | if (r_type == R_AARCH64_NONE || r_type == R_AARCH64_NULL) | |
1494 | return BFD_RELOC_AARCH64_NONE; | |
1495 | ||
5860e3f8 NC |
1496 | /* PR 17512: file: b371e70a. */ |
1497 | if (r_type >= R_AARCH64_end) | |
1498 | { | |
1499 | _bfd_error_handler (_("Invalid AArch64 reloc number: %d"), r_type); | |
1500 | bfd_set_error (bfd_error_bad_value); | |
1501 | return BFD_RELOC_AARCH64_NONE; | |
1502 | } | |
1503 | ||
a6bb11b2 YZ |
1504 | return BFD_RELOC_AARCH64_RELOC_START + offsets[r_type]; |
1505 | } | |
1506 | ||
1507 | struct elf_aarch64_reloc_map | |
1508 | { | |
1509 | bfd_reloc_code_real_type from; | |
1510 | bfd_reloc_code_real_type to; | |
1511 | }; | |
1512 | ||
1513 | /* Map bfd generic reloc to AArch64-specific reloc. */ | |
1514 | static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map[] = | |
1515 | { | |
1516 | {BFD_RELOC_NONE, BFD_RELOC_AARCH64_NONE}, | |
1517 | ||
1518 | /* Basic data relocations. */ | |
1519 | {BFD_RELOC_CTOR, BFD_RELOC_AARCH64_NN}, | |
1520 | {BFD_RELOC_64, BFD_RELOC_AARCH64_64}, | |
1521 | {BFD_RELOC_32, BFD_RELOC_AARCH64_32}, | |
1522 | {BFD_RELOC_16, BFD_RELOC_AARCH64_16}, | |
1523 | {BFD_RELOC_64_PCREL, BFD_RELOC_AARCH64_64_PCREL}, | |
1524 | {BFD_RELOC_32_PCREL, BFD_RELOC_AARCH64_32_PCREL}, | |
1525 | {BFD_RELOC_16_PCREL, BFD_RELOC_AARCH64_16_PCREL}, | |
1526 | }; | |
1527 | ||
1528 | /* Given the bfd internal relocation enumerator in CODE, return the | |
1529 | corresponding howto entry. */ | |
1530 | ||
1531 | static reloc_howto_type * | |
1532 | elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code) | |
1533 | { | |
1534 | unsigned int i; | |
1535 | ||
1536 | /* Convert bfd generic reloc to AArch64-specific reloc. */ | |
1537 | if (code < BFD_RELOC_AARCH64_RELOC_START | |
1538 | || code > BFD_RELOC_AARCH64_RELOC_END) | |
1539 | for (i = 0; i < ARRAY_SIZE (elf_aarch64_reloc_map); i++) | |
1540 | if (elf_aarch64_reloc_map[i].from == code) | |
1541 | { | |
1542 | code = elf_aarch64_reloc_map[i].to; | |
1543 | break; | |
1544 | } | |
1545 | ||
1546 | if (code > BFD_RELOC_AARCH64_RELOC_START | |
1547 | && code < BFD_RELOC_AARCH64_RELOC_END) | |
1548 | if (elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START].type) | |
1549 | return &elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START]; | |
1550 | ||
54757ed1 AP |
1551 | if (code == BFD_RELOC_AARCH64_NONE) |
1552 | return &elfNN_aarch64_howto_none; | |
1553 | ||
a6bb11b2 YZ |
1554 | return NULL; |
1555 | } | |
1556 | ||
a06ea964 | 1557 | static reloc_howto_type * |
cec5225b | 1558 | elfNN_aarch64_howto_from_type (unsigned int r_type) |
a06ea964 | 1559 | { |
a6bb11b2 YZ |
1560 | bfd_reloc_code_real_type val; |
1561 | reloc_howto_type *howto; | |
1562 | ||
cec5225b YZ |
1563 | #if ARCH_SIZE == 32 |
1564 | if (r_type > 256) | |
1565 | { | |
1566 | bfd_set_error (bfd_error_bad_value); | |
1567 | return NULL; | |
1568 | } | |
1569 | #endif | |
1570 | ||
a6bb11b2 YZ |
1571 | if (r_type == R_AARCH64_NONE) |
1572 | return &elfNN_aarch64_howto_none; | |
a06ea964 | 1573 | |
a6bb11b2 YZ |
1574 | val = elfNN_aarch64_bfd_reloc_from_type (r_type); |
1575 | howto = elfNN_aarch64_howto_from_bfd_reloc (val); | |
a06ea964 | 1576 | |
a6bb11b2 YZ |
1577 | if (howto != NULL) |
1578 | return howto; | |
a06ea964 | 1579 | |
a06ea964 NC |
1580 | bfd_set_error (bfd_error_bad_value); |
1581 | return NULL; | |
1582 | } | |
1583 | ||
1584 | static void | |
cec5225b | 1585 | elfNN_aarch64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc, |
a06ea964 NC |
1586 | Elf_Internal_Rela *elf_reloc) |
1587 | { | |
1588 | unsigned int r_type; | |
1589 | ||
cec5225b YZ |
1590 | r_type = ELFNN_R_TYPE (elf_reloc->r_info); |
1591 | bfd_reloc->howto = elfNN_aarch64_howto_from_type (r_type); | |
a06ea964 NC |
1592 | } |
1593 | ||
a06ea964 | 1594 | static reloc_howto_type * |
cec5225b | 1595 | elfNN_aarch64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
1596 | bfd_reloc_code_real_type code) |
1597 | { | |
a6bb11b2 | 1598 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (code); |
a06ea964 | 1599 | |
a6bb11b2 YZ |
1600 | if (howto != NULL) |
1601 | return howto; | |
a06ea964 NC |
1602 | |
1603 | bfd_set_error (bfd_error_bad_value); | |
1604 | return NULL; | |
1605 | } | |
1606 | ||
1607 | static reloc_howto_type * | |
cec5225b | 1608 | elfNN_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
1609 | const char *r_name) |
1610 | { | |
1611 | unsigned int i; | |
1612 | ||
a6bb11b2 YZ |
1613 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) |
1614 | if (elfNN_aarch64_howto_table[i].name != NULL | |
1615 | && strcasecmp (elfNN_aarch64_howto_table[i].name, r_name) == 0) | |
1616 | return &elfNN_aarch64_howto_table[i]; | |
a06ea964 NC |
1617 | |
1618 | return NULL; | |
1619 | } | |
1620 | ||
6d00b590 | 1621 | #define TARGET_LITTLE_SYM aarch64_elfNN_le_vec |
cec5225b | 1622 | #define TARGET_LITTLE_NAME "elfNN-littleaarch64" |
6d00b590 | 1623 | #define TARGET_BIG_SYM aarch64_elfNN_be_vec |
cec5225b | 1624 | #define TARGET_BIG_NAME "elfNN-bigaarch64" |
a06ea964 | 1625 | |
a06ea964 NC |
1626 | /* The linker script knows the section names for placement. |
1627 | The entry_names are used to do simple name mangling on the stubs. | |
1628 | Given a function name, and its type, the stub can be found. The | |
1629 | name can be changed. The only requirement is the %s be present. */ | |
1630 | #define STUB_ENTRY_NAME "__%s_veneer" | |
1631 | ||
1632 | /* The name of the dynamic interpreter. This is put in the .interp | |
1633 | section. */ | |
1634 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
1635 | ||
1636 | #define AARCH64_MAX_FWD_BRANCH_OFFSET \ | |
1637 | (((1 << 25) - 1) << 2) | |
1638 | #define AARCH64_MAX_BWD_BRANCH_OFFSET \ | |
1639 | (-((1 << 25) << 2)) | |
1640 | ||
1641 | #define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1) | |
1642 | #define AARCH64_MIN_ADRP_IMM (-(1 << 20)) | |
1643 | ||
1644 | static int | |
1645 | aarch64_valid_for_adrp_p (bfd_vma value, bfd_vma place) | |
1646 | { | |
1647 | bfd_signed_vma offset = (bfd_signed_vma) (PG (value) - PG (place)) >> 12; | |
1648 | return offset <= AARCH64_MAX_ADRP_IMM && offset >= AARCH64_MIN_ADRP_IMM; | |
1649 | } | |
1650 | ||
1651 | static int | |
1652 | aarch64_valid_branch_p (bfd_vma value, bfd_vma place) | |
1653 | { | |
1654 | bfd_signed_vma offset = (bfd_signed_vma) (value - place); | |
1655 | return (offset <= AARCH64_MAX_FWD_BRANCH_OFFSET | |
1656 | && offset >= AARCH64_MAX_BWD_BRANCH_OFFSET); | |
1657 | } | |
1658 | ||
1659 | static const uint32_t aarch64_adrp_branch_stub [] = | |
1660 | { | |
1661 | 0x90000010, /* adrp ip0, X */ | |
1662 | /* R_AARCH64_ADR_HI21_PCREL(X) */ | |
1663 | 0x91000210, /* add ip0, ip0, :lo12:X */ | |
1664 | /* R_AARCH64_ADD_ABS_LO12_NC(X) */ | |
1665 | 0xd61f0200, /* br ip0 */ | |
1666 | }; | |
1667 | ||
1668 | static const uint32_t aarch64_long_branch_stub[] = | |
1669 | { | |
cec5225b | 1670 | #if ARCH_SIZE == 64 |
a06ea964 | 1671 | 0x58000090, /* ldr ip0, 1f */ |
cec5225b YZ |
1672 | #else |
1673 | 0x18000090, /* ldr wip0, 1f */ | |
1674 | #endif | |
a06ea964 NC |
1675 | 0x10000011, /* adr ip1, #0 */ |
1676 | 0x8b110210, /* add ip0, ip0, ip1 */ | |
1677 | 0xd61f0200, /* br ip0 */ | |
cec5225b YZ |
1678 | 0x00000000, /* 1: .xword or .word |
1679 | R_AARCH64_PRELNN(X) + 12 | |
a06ea964 NC |
1680 | */ |
1681 | 0x00000000, | |
1682 | }; | |
1683 | ||
68fcca92 JW |
1684 | static const uint32_t aarch64_erratum_835769_stub[] = |
1685 | { | |
1686 | 0x00000000, /* Placeholder for multiply accumulate. */ | |
1687 | 0x14000000, /* b <label> */ | |
1688 | }; | |
1689 | ||
4106101c MS |
1690 | static const uint32_t aarch64_erratum_843419_stub[] = |
1691 | { | |
1692 | 0x00000000, /* Placeholder for LDR instruction. */ | |
1693 | 0x14000000, /* b <label> */ | |
1694 | }; | |
1695 | ||
a06ea964 NC |
1696 | /* Section name for stubs is the associated section name plus this |
1697 | string. */ | |
1698 | #define STUB_SUFFIX ".stub" | |
1699 | ||
cec5225b | 1700 | enum elf_aarch64_stub_type |
a06ea964 NC |
1701 | { |
1702 | aarch64_stub_none, | |
1703 | aarch64_stub_adrp_branch, | |
1704 | aarch64_stub_long_branch, | |
68fcca92 | 1705 | aarch64_stub_erratum_835769_veneer, |
4106101c | 1706 | aarch64_stub_erratum_843419_veneer, |
a06ea964 NC |
1707 | }; |
1708 | ||
cec5225b | 1709 | struct elf_aarch64_stub_hash_entry |
a06ea964 NC |
1710 | { |
1711 | /* Base hash table entry structure. */ | |
1712 | struct bfd_hash_entry root; | |
1713 | ||
1714 | /* The stub section. */ | |
1715 | asection *stub_sec; | |
1716 | ||
1717 | /* Offset within stub_sec of the beginning of this stub. */ | |
1718 | bfd_vma stub_offset; | |
1719 | ||
1720 | /* Given the symbol's value and its section we can determine its final | |
1721 | value when building the stubs (so the stub knows where to jump). */ | |
1722 | bfd_vma target_value; | |
1723 | asection *target_section; | |
1724 | ||
cec5225b | 1725 | enum elf_aarch64_stub_type stub_type; |
a06ea964 NC |
1726 | |
1727 | /* The symbol table entry, if any, that this was derived from. */ | |
cec5225b | 1728 | struct elf_aarch64_link_hash_entry *h; |
a06ea964 NC |
1729 | |
1730 | /* Destination symbol type */ | |
1731 | unsigned char st_type; | |
1732 | ||
1733 | /* Where this stub is being called from, or, in the case of combined | |
1734 | stub sections, the first input section in the group. */ | |
1735 | asection *id_sec; | |
1736 | ||
1737 | /* The name for the local symbol at the start of this stub. The | |
1738 | stub name in the hash table has to be unique; this does not, so | |
1739 | it can be friendlier. */ | |
1740 | char *output_name; | |
68fcca92 JW |
1741 | |
1742 | /* The instruction which caused this stub to be generated (only valid for | |
1743 | erratum 835769 workaround stubs at present). */ | |
1744 | uint32_t veneered_insn; | |
4106101c MS |
1745 | |
1746 | /* In an erratum 843419 workaround stub, the ADRP instruction offset. */ | |
1747 | bfd_vma adrp_offset; | |
a06ea964 NC |
1748 | }; |
1749 | ||
1750 | /* Used to build a map of a section. This is required for mixed-endian | |
1751 | code/data. */ | |
1752 | ||
cec5225b | 1753 | typedef struct elf_elf_section_map |
a06ea964 NC |
1754 | { |
1755 | bfd_vma vma; | |
1756 | char type; | |
1757 | } | |
cec5225b | 1758 | elf_aarch64_section_map; |
a06ea964 NC |
1759 | |
1760 | ||
1761 | typedef struct _aarch64_elf_section_data | |
1762 | { | |
1763 | struct bfd_elf_section_data elf; | |
1764 | unsigned int mapcount; | |
1765 | unsigned int mapsize; | |
cec5225b | 1766 | elf_aarch64_section_map *map; |
a06ea964 NC |
1767 | } |
1768 | _aarch64_elf_section_data; | |
1769 | ||
cec5225b | 1770 | #define elf_aarch64_section_data(sec) \ |
a06ea964 NC |
1771 | ((_aarch64_elf_section_data *) elf_section_data (sec)) |
1772 | ||
4e8516b2 AP |
1773 | /* The size of the thread control block which is defined to be two pointers. */ |
1774 | #define TCB_SIZE (ARCH_SIZE/8)*2 | |
a06ea964 NC |
1775 | |
1776 | struct elf_aarch64_local_symbol | |
1777 | { | |
1778 | unsigned int got_type; | |
1779 | bfd_signed_vma got_refcount; | |
1780 | bfd_vma got_offset; | |
1781 | ||
1782 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The | |
1783 | offset is from the end of the jump table and reserved entries | |
1784 | within the PLTGOT. | |
1785 | ||
1786 | The magic value (bfd_vma) -1 indicates that an offset has not be | |
1787 | allocated. */ | |
1788 | bfd_vma tlsdesc_got_jump_table_offset; | |
1789 | }; | |
1790 | ||
1791 | struct elf_aarch64_obj_tdata | |
1792 | { | |
1793 | struct elf_obj_tdata root; | |
1794 | ||
1795 | /* local symbol descriptors */ | |
1796 | struct elf_aarch64_local_symbol *locals; | |
1797 | ||
1798 | /* Zero to warn when linking objects with incompatible enum sizes. */ | |
1799 | int no_enum_size_warning; | |
1800 | ||
1801 | /* Zero to warn when linking objects with incompatible wchar_t sizes. */ | |
1802 | int no_wchar_size_warning; | |
1803 | }; | |
1804 | ||
1805 | #define elf_aarch64_tdata(bfd) \ | |
1806 | ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any) | |
1807 | ||
cec5225b | 1808 | #define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals) |
a06ea964 NC |
1809 | |
1810 | #define is_aarch64_elf(bfd) \ | |
1811 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
1812 | && elf_tdata (bfd) != NULL \ | |
1813 | && elf_object_id (bfd) == AARCH64_ELF_DATA) | |
1814 | ||
1815 | static bfd_boolean | |
cec5225b | 1816 | elfNN_aarch64_mkobject (bfd *abfd) |
a06ea964 NC |
1817 | { |
1818 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_aarch64_obj_tdata), | |
1819 | AARCH64_ELF_DATA); | |
1820 | } | |
1821 | ||
cec5225b YZ |
1822 | #define elf_aarch64_hash_entry(ent) \ |
1823 | ((struct elf_aarch64_link_hash_entry *)(ent)) | |
a06ea964 NC |
1824 | |
1825 | #define GOT_UNKNOWN 0 | |
1826 | #define GOT_NORMAL 1 | |
1827 | #define GOT_TLS_GD 2 | |
1828 | #define GOT_TLS_IE 4 | |
1829 | #define GOT_TLSDESC_GD 8 | |
1830 | ||
1831 | #define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD)) | |
1832 | ||
1833 | /* AArch64 ELF linker hash entry. */ | |
cec5225b | 1834 | struct elf_aarch64_link_hash_entry |
a06ea964 NC |
1835 | { |
1836 | struct elf_link_hash_entry root; | |
1837 | ||
1838 | /* Track dynamic relocs copied for this symbol. */ | |
1839 | struct elf_dyn_relocs *dyn_relocs; | |
1840 | ||
a06ea964 NC |
1841 | /* Since PLT entries have variable size, we need to record the |
1842 | index into .got.plt instead of recomputing it from the PLT | |
1843 | offset. */ | |
1844 | bfd_signed_vma plt_got_offset; | |
1845 | ||
1846 | /* Bit mask representing the type of GOT entry(s) if any required by | |
1847 | this symbol. */ | |
1848 | unsigned int got_type; | |
1849 | ||
1850 | /* A pointer to the most recently used stub hash entry against this | |
1851 | symbol. */ | |
cec5225b | 1852 | struct elf_aarch64_stub_hash_entry *stub_cache; |
a06ea964 NC |
1853 | |
1854 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset | |
1855 | is from the end of the jump table and reserved entries within the PLTGOT. | |
1856 | ||
1857 | The magic value (bfd_vma) -1 indicates that an offset has not | |
1858 | be allocated. */ | |
1859 | bfd_vma tlsdesc_got_jump_table_offset; | |
1860 | }; | |
1861 | ||
1862 | static unsigned int | |
cec5225b | 1863 | elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry *h, |
a06ea964 NC |
1864 | bfd *abfd, |
1865 | unsigned long r_symndx) | |
1866 | { | |
1867 | if (h) | |
cec5225b | 1868 | return elf_aarch64_hash_entry (h)->got_type; |
a06ea964 | 1869 | |
cec5225b | 1870 | if (! elf_aarch64_locals (abfd)) |
a06ea964 NC |
1871 | return GOT_UNKNOWN; |
1872 | ||
cec5225b | 1873 | return elf_aarch64_locals (abfd)[r_symndx].got_type; |
a06ea964 NC |
1874 | } |
1875 | ||
a06ea964 | 1876 | /* Get the AArch64 elf linker hash table from a link_info structure. */ |
cec5225b YZ |
1877 | #define elf_aarch64_hash_table(info) \ |
1878 | ((struct elf_aarch64_link_hash_table *) ((info)->hash)) | |
a06ea964 NC |
1879 | |
1880 | #define aarch64_stub_hash_lookup(table, string, create, copy) \ | |
cec5225b | 1881 | ((struct elf_aarch64_stub_hash_entry *) \ |
a06ea964 NC |
1882 | bfd_hash_lookup ((table), (string), (create), (copy))) |
1883 | ||
1884 | /* AArch64 ELF linker hash table. */ | |
cec5225b | 1885 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
1886 | { |
1887 | /* The main hash table. */ | |
1888 | struct elf_link_hash_table root; | |
1889 | ||
1890 | /* Nonzero to force PIC branch veneers. */ | |
1891 | int pic_veneer; | |
1892 | ||
68fcca92 JW |
1893 | /* Fix erratum 835769. */ |
1894 | int fix_erratum_835769; | |
1895 | ||
4106101c MS |
1896 | /* Fix erratum 843419. */ |
1897 | int fix_erratum_843419; | |
1898 | ||
1899 | /* Enable ADRP->ADR rewrite for erratum 843419 workaround. */ | |
1900 | int fix_erratum_843419_adr; | |
1901 | ||
a06ea964 NC |
1902 | /* The number of bytes in the initial entry in the PLT. */ |
1903 | bfd_size_type plt_header_size; | |
1904 | ||
1905 | /* The number of bytes in the subsequent PLT etries. */ | |
1906 | bfd_size_type plt_entry_size; | |
1907 | ||
1908 | /* Short-cuts to get to dynamic linker sections. */ | |
1909 | asection *sdynbss; | |
1910 | asection *srelbss; | |
1911 | ||
1912 | /* Small local sym cache. */ | |
1913 | struct sym_cache sym_cache; | |
1914 | ||
1915 | /* For convenience in allocate_dynrelocs. */ | |
1916 | bfd *obfd; | |
1917 | ||
1918 | /* The amount of space used by the reserved portion of the sgotplt | |
1919 | section, plus whatever space is used by the jump slots. */ | |
1920 | bfd_vma sgotplt_jump_table_size; | |
1921 | ||
1922 | /* The stub hash table. */ | |
1923 | struct bfd_hash_table stub_hash_table; | |
1924 | ||
1925 | /* Linker stub bfd. */ | |
1926 | bfd *stub_bfd; | |
1927 | ||
1928 | /* Linker call-backs. */ | |
1929 | asection *(*add_stub_section) (const char *, asection *); | |
1930 | void (*layout_sections_again) (void); | |
1931 | ||
1932 | /* Array to keep track of which stub sections have been created, and | |
1933 | information on stub grouping. */ | |
1934 | struct map_stub | |
1935 | { | |
1936 | /* This is the section to which stubs in the group will be | |
1937 | attached. */ | |
1938 | asection *link_sec; | |
1939 | /* The stub section. */ | |
1940 | asection *stub_sec; | |
1941 | } *stub_group; | |
1942 | ||
cec5225b | 1943 | /* Assorted information used by elfNN_aarch64_size_stubs. */ |
a06ea964 NC |
1944 | unsigned int bfd_count; |
1945 | int top_index; | |
1946 | asection **input_list; | |
1947 | ||
1948 | /* The offset into splt of the PLT entry for the TLS descriptor | |
1949 | resolver. Special values are 0, if not necessary (or not found | |
1950 | to be necessary yet), and -1 if needed but not determined | |
1951 | yet. */ | |
1952 | bfd_vma tlsdesc_plt; | |
1953 | ||
1954 | /* The GOT offset for the lazy trampoline. Communicated to the | |
1955 | loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1 | |
1956 | indicates an offset is not allocated. */ | |
1957 | bfd_vma dt_tlsdesc_got; | |
1419bbe5 WN |
1958 | |
1959 | /* Used by local STT_GNU_IFUNC symbols. */ | |
1960 | htab_t loc_hash_table; | |
1961 | void * loc_hash_memory; | |
a06ea964 NC |
1962 | }; |
1963 | ||
a06ea964 NC |
1964 | /* Create an entry in an AArch64 ELF linker hash table. */ |
1965 | ||
1966 | static struct bfd_hash_entry * | |
cec5225b | 1967 | elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry, |
a06ea964 NC |
1968 | struct bfd_hash_table *table, |
1969 | const char *string) | |
1970 | { | |
cec5225b YZ |
1971 | struct elf_aarch64_link_hash_entry *ret = |
1972 | (struct elf_aarch64_link_hash_entry *) entry; | |
a06ea964 NC |
1973 | |
1974 | /* Allocate the structure if it has not already been allocated by a | |
1975 | subclass. */ | |
1976 | if (ret == NULL) | |
1977 | ret = bfd_hash_allocate (table, | |
cec5225b | 1978 | sizeof (struct elf_aarch64_link_hash_entry)); |
a06ea964 NC |
1979 | if (ret == NULL) |
1980 | return (struct bfd_hash_entry *) ret; | |
1981 | ||
1982 | /* Call the allocation method of the superclass. */ | |
cec5225b | 1983 | ret = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
1984 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
1985 | table, string)); | |
1986 | if (ret != NULL) | |
1987 | { | |
1988 | ret->dyn_relocs = NULL; | |
a06ea964 NC |
1989 | ret->got_type = GOT_UNKNOWN; |
1990 | ret->plt_got_offset = (bfd_vma) - 1; | |
1991 | ret->stub_cache = NULL; | |
1992 | ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
1993 | } | |
1994 | ||
1995 | return (struct bfd_hash_entry *) ret; | |
1996 | } | |
1997 | ||
1998 | /* Initialize an entry in the stub hash table. */ | |
1999 | ||
2000 | static struct bfd_hash_entry * | |
2001 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
2002 | struct bfd_hash_table *table, const char *string) | |
2003 | { | |
2004 | /* Allocate the structure if it has not already been allocated by a | |
2005 | subclass. */ | |
2006 | if (entry == NULL) | |
2007 | { | |
2008 | entry = bfd_hash_allocate (table, | |
2009 | sizeof (struct | |
cec5225b | 2010 | elf_aarch64_stub_hash_entry)); |
a06ea964 NC |
2011 | if (entry == NULL) |
2012 | return entry; | |
2013 | } | |
2014 | ||
2015 | /* Call the allocation method of the superclass. */ | |
2016 | entry = bfd_hash_newfunc (entry, table, string); | |
2017 | if (entry != NULL) | |
2018 | { | |
cec5225b | 2019 | struct elf_aarch64_stub_hash_entry *eh; |
a06ea964 NC |
2020 | |
2021 | /* Initialize the local fields. */ | |
cec5225b | 2022 | eh = (struct elf_aarch64_stub_hash_entry *) entry; |
4106101c | 2023 | eh->adrp_offset = 0; |
a06ea964 NC |
2024 | eh->stub_sec = NULL; |
2025 | eh->stub_offset = 0; | |
2026 | eh->target_value = 0; | |
2027 | eh->target_section = NULL; | |
2028 | eh->stub_type = aarch64_stub_none; | |
2029 | eh->h = NULL; | |
2030 | eh->id_sec = NULL; | |
2031 | } | |
2032 | ||
2033 | return entry; | |
2034 | } | |
2035 | ||
1419bbe5 WN |
2036 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry |
2037 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
2038 | as global symbol. We reuse indx and dynstr_index for local symbol | |
2039 | hash since they aren't used by global symbols in this backend. */ | |
2040 | ||
2041 | static hashval_t | |
2042 | elfNN_aarch64_local_htab_hash (const void *ptr) | |
2043 | { | |
2044 | struct elf_link_hash_entry *h | |
2045 | = (struct elf_link_hash_entry *) ptr; | |
2046 | return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); | |
2047 | } | |
2048 | ||
2049 | /* Compare local hash entries. */ | |
2050 | ||
2051 | static int | |
2052 | elfNN_aarch64_local_htab_eq (const void *ptr1, const void *ptr2) | |
2053 | { | |
2054 | struct elf_link_hash_entry *h1 | |
2055 | = (struct elf_link_hash_entry *) ptr1; | |
2056 | struct elf_link_hash_entry *h2 | |
2057 | = (struct elf_link_hash_entry *) ptr2; | |
2058 | ||
2059 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
2060 | } | |
2061 | ||
2062 | /* Find and/or create a hash entry for local symbol. */ | |
2063 | ||
2064 | static struct elf_link_hash_entry * | |
2065 | elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table *htab, | |
2066 | bfd *abfd, const Elf_Internal_Rela *rel, | |
2067 | bfd_boolean create) | |
2068 | { | |
2069 | struct elf_aarch64_link_hash_entry e, *ret; | |
2070 | asection *sec = abfd->sections; | |
2071 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, | |
2072 | ELFNN_R_SYM (rel->r_info)); | |
2073 | void **slot; | |
2074 | ||
2075 | e.root.indx = sec->id; | |
2076 | e.root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2077 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, | |
2078 | create ? INSERT : NO_INSERT); | |
2079 | ||
2080 | if (!slot) | |
2081 | return NULL; | |
2082 | ||
2083 | if (*slot) | |
2084 | { | |
2085 | ret = (struct elf_aarch64_link_hash_entry *) *slot; | |
2086 | return &ret->root; | |
2087 | } | |
2088 | ||
2089 | ret = (struct elf_aarch64_link_hash_entry *) | |
2090 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, | |
2091 | sizeof (struct elf_aarch64_link_hash_entry)); | |
2092 | if (ret) | |
2093 | { | |
2094 | memset (ret, 0, sizeof (*ret)); | |
2095 | ret->root.indx = sec->id; | |
2096 | ret->root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2097 | ret->root.dynindx = -1; | |
2098 | *slot = ret; | |
2099 | } | |
2100 | return &ret->root; | |
2101 | } | |
a06ea964 NC |
2102 | |
2103 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
2104 | ||
2105 | static void | |
cec5225b | 2106 | elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info, |
a06ea964 NC |
2107 | struct elf_link_hash_entry *dir, |
2108 | struct elf_link_hash_entry *ind) | |
2109 | { | |
cec5225b | 2110 | struct elf_aarch64_link_hash_entry *edir, *eind; |
a06ea964 | 2111 | |
cec5225b YZ |
2112 | edir = (struct elf_aarch64_link_hash_entry *) dir; |
2113 | eind = (struct elf_aarch64_link_hash_entry *) ind; | |
a06ea964 NC |
2114 | |
2115 | if (eind->dyn_relocs != NULL) | |
2116 | { | |
2117 | if (edir->dyn_relocs != NULL) | |
2118 | { | |
2119 | struct elf_dyn_relocs **pp; | |
2120 | struct elf_dyn_relocs *p; | |
2121 | ||
2122 | /* Add reloc counts against the indirect sym to the direct sym | |
2123 | list. Merge any entries against the same section. */ | |
2124 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) | |
2125 | { | |
2126 | struct elf_dyn_relocs *q; | |
2127 | ||
2128 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
2129 | if (q->sec == p->sec) | |
2130 | { | |
2131 | q->pc_count += p->pc_count; | |
2132 | q->count += p->count; | |
2133 | *pp = p->next; | |
2134 | break; | |
2135 | } | |
2136 | if (q == NULL) | |
2137 | pp = &p->next; | |
2138 | } | |
2139 | *pp = edir->dyn_relocs; | |
2140 | } | |
2141 | ||
2142 | edir->dyn_relocs = eind->dyn_relocs; | |
2143 | eind->dyn_relocs = NULL; | |
2144 | } | |
2145 | ||
a06ea964 NC |
2146 | if (ind->root.type == bfd_link_hash_indirect) |
2147 | { | |
2148 | /* Copy over PLT info. */ | |
2149 | if (dir->got.refcount <= 0) | |
2150 | { | |
2151 | edir->got_type = eind->got_type; | |
2152 | eind->got_type = GOT_UNKNOWN; | |
2153 | } | |
2154 | } | |
2155 | ||
2156 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
2157 | } | |
2158 | ||
68faa637 AM |
2159 | /* Destroy an AArch64 elf linker hash table. */ |
2160 | ||
2161 | static void | |
d495ab0d | 2162 | elfNN_aarch64_link_hash_table_free (bfd *obfd) |
68faa637 AM |
2163 | { |
2164 | struct elf_aarch64_link_hash_table *ret | |
d495ab0d | 2165 | = (struct elf_aarch64_link_hash_table *) obfd->link.hash; |
68faa637 AM |
2166 | |
2167 | if (ret->loc_hash_table) | |
2168 | htab_delete (ret->loc_hash_table); | |
2169 | if (ret->loc_hash_memory) | |
2170 | objalloc_free ((struct objalloc *) ret->loc_hash_memory); | |
2171 | ||
2172 | bfd_hash_table_free (&ret->stub_hash_table); | |
d495ab0d | 2173 | _bfd_elf_link_hash_table_free (obfd); |
68faa637 AM |
2174 | } |
2175 | ||
a06ea964 NC |
2176 | /* Create an AArch64 elf linker hash table. */ |
2177 | ||
2178 | static struct bfd_link_hash_table * | |
cec5225b | 2179 | elfNN_aarch64_link_hash_table_create (bfd *abfd) |
a06ea964 | 2180 | { |
cec5225b YZ |
2181 | struct elf_aarch64_link_hash_table *ret; |
2182 | bfd_size_type amt = sizeof (struct elf_aarch64_link_hash_table); | |
a06ea964 | 2183 | |
7bf52ea2 | 2184 | ret = bfd_zmalloc (amt); |
a06ea964 NC |
2185 | if (ret == NULL) |
2186 | return NULL; | |
2187 | ||
2188 | if (!_bfd_elf_link_hash_table_init | |
cec5225b YZ |
2189 | (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc, |
2190 | sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA)) | |
a06ea964 NC |
2191 | { |
2192 | free (ret); | |
2193 | return NULL; | |
2194 | } | |
2195 | ||
a06ea964 NC |
2196 | ret->plt_header_size = PLT_ENTRY_SIZE; |
2197 | ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE; | |
a06ea964 | 2198 | ret->obfd = abfd; |
a06ea964 NC |
2199 | ret->dt_tlsdesc_got = (bfd_vma) - 1; |
2200 | ||
2201 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc, | |
cec5225b | 2202 | sizeof (struct elf_aarch64_stub_hash_entry))) |
a06ea964 | 2203 | { |
d495ab0d | 2204 | _bfd_elf_link_hash_table_free (abfd); |
a06ea964 NC |
2205 | return NULL; |
2206 | } | |
2207 | ||
1419bbe5 WN |
2208 | ret->loc_hash_table = htab_try_create (1024, |
2209 | elfNN_aarch64_local_htab_hash, | |
2210 | elfNN_aarch64_local_htab_eq, | |
2211 | NULL); | |
2212 | ret->loc_hash_memory = objalloc_create (); | |
2213 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
2214 | { | |
d495ab0d | 2215 | elfNN_aarch64_link_hash_table_free (abfd); |
1419bbe5 WN |
2216 | return NULL; |
2217 | } | |
d495ab0d | 2218 | ret->root.root.hash_table_free = elfNN_aarch64_link_hash_table_free; |
1419bbe5 | 2219 | |
a06ea964 NC |
2220 | return &ret->root.root; |
2221 | } | |
2222 | ||
a06ea964 NC |
2223 | static bfd_boolean |
2224 | aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section, | |
2225 | bfd_vma offset, bfd_vma value) | |
2226 | { | |
2227 | reloc_howto_type *howto; | |
2228 | bfd_vma place; | |
2229 | ||
cec5225b | 2230 | howto = elfNN_aarch64_howto_from_type (r_type); |
a06ea964 NC |
2231 | place = (input_section->output_section->vma + input_section->output_offset |
2232 | + offset); | |
caed7120 YZ |
2233 | |
2234 | r_type = elfNN_aarch64_bfd_reloc_from_type (r_type); | |
2235 | value = _bfd_aarch64_elf_resolve_relocation (r_type, place, value, 0, FALSE); | |
2236 | return _bfd_aarch64_elf_put_addend (input_bfd, | |
2237 | input_section->contents + offset, r_type, | |
2238 | howto, value); | |
a06ea964 NC |
2239 | } |
2240 | ||
cec5225b | 2241 | static enum elf_aarch64_stub_type |
a06ea964 NC |
2242 | aarch64_select_branch_stub (bfd_vma value, bfd_vma place) |
2243 | { | |
2244 | if (aarch64_valid_for_adrp_p (value, place)) | |
2245 | return aarch64_stub_adrp_branch; | |
2246 | return aarch64_stub_long_branch; | |
2247 | } | |
2248 | ||
2249 | /* Determine the type of stub needed, if any, for a call. */ | |
2250 | ||
cec5225b | 2251 | static enum elf_aarch64_stub_type |
a06ea964 NC |
2252 | aarch64_type_of_stub (struct bfd_link_info *info, |
2253 | asection *input_sec, | |
2254 | const Elf_Internal_Rela *rel, | |
2255 | unsigned char st_type, | |
cec5225b | 2256 | struct elf_aarch64_link_hash_entry *hash, |
a06ea964 NC |
2257 | bfd_vma destination) |
2258 | { | |
2259 | bfd_vma location; | |
2260 | bfd_signed_vma branch_offset; | |
2261 | unsigned int r_type; | |
cec5225b YZ |
2262 | struct elf_aarch64_link_hash_table *globals; |
2263 | enum elf_aarch64_stub_type stub_type = aarch64_stub_none; | |
a06ea964 NC |
2264 | bfd_boolean via_plt_p; |
2265 | ||
2266 | if (st_type != STT_FUNC) | |
2267 | return stub_type; | |
2268 | ||
cec5225b | 2269 | globals = elf_aarch64_hash_table (info); |
a06ea964 NC |
2270 | via_plt_p = (globals->root.splt != NULL && hash != NULL |
2271 | && hash->root.plt.offset != (bfd_vma) - 1); | |
2272 | ||
2273 | if (via_plt_p) | |
2274 | return stub_type; | |
2275 | ||
2276 | /* Determine where the call point is. */ | |
2277 | location = (input_sec->output_offset | |
2278 | + input_sec->output_section->vma + rel->r_offset); | |
2279 | ||
2280 | branch_offset = (bfd_signed_vma) (destination - location); | |
2281 | ||
cec5225b | 2282 | r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
2283 | |
2284 | /* We don't want to redirect any old unconditional jump in this way, | |
2285 | only one which is being used for a sibcall, where it is | |
2286 | acceptable for the IP0 and IP1 registers to be clobbered. */ | |
a6bb11b2 | 2287 | if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26)) |
a06ea964 NC |
2288 | && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET |
2289 | || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET)) | |
2290 | { | |
2291 | stub_type = aarch64_stub_long_branch; | |
2292 | } | |
2293 | ||
2294 | return stub_type; | |
2295 | } | |
2296 | ||
2297 | /* Build a name for an entry in the stub hash table. */ | |
2298 | ||
2299 | static char * | |
cec5225b | 2300 | elfNN_aarch64_stub_name (const asection *input_section, |
a06ea964 | 2301 | const asection *sym_sec, |
cec5225b | 2302 | const struct elf_aarch64_link_hash_entry *hash, |
a06ea964 NC |
2303 | const Elf_Internal_Rela *rel) |
2304 | { | |
2305 | char *stub_name; | |
2306 | bfd_size_type len; | |
2307 | ||
2308 | if (hash) | |
2309 | { | |
2310 | len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1; | |
2311 | stub_name = bfd_malloc (len); | |
2312 | if (stub_name != NULL) | |
2313 | snprintf (stub_name, len, "%08x_%s+%" BFD_VMA_FMT "x", | |
2314 | (unsigned int) input_section->id, | |
2315 | hash->root.root.root.string, | |
2316 | rel->r_addend); | |
2317 | } | |
2318 | else | |
2319 | { | |
2320 | len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1; | |
2321 | stub_name = bfd_malloc (len); | |
2322 | if (stub_name != NULL) | |
2323 | snprintf (stub_name, len, "%08x_%x:%x+%" BFD_VMA_FMT "x", | |
2324 | (unsigned int) input_section->id, | |
2325 | (unsigned int) sym_sec->id, | |
cec5225b | 2326 | (unsigned int) ELFNN_R_SYM (rel->r_info), |
a06ea964 NC |
2327 | rel->r_addend); |
2328 | } | |
2329 | ||
2330 | return stub_name; | |
2331 | } | |
2332 | ||
2333 | /* Look up an entry in the stub hash. Stub entries are cached because | |
2334 | creating the stub name takes a bit of time. */ | |
2335 | ||
cec5225b YZ |
2336 | static struct elf_aarch64_stub_hash_entry * |
2337 | elfNN_aarch64_get_stub_entry (const asection *input_section, | |
a06ea964 NC |
2338 | const asection *sym_sec, |
2339 | struct elf_link_hash_entry *hash, | |
2340 | const Elf_Internal_Rela *rel, | |
cec5225b | 2341 | struct elf_aarch64_link_hash_table *htab) |
a06ea964 | 2342 | { |
cec5225b YZ |
2343 | struct elf_aarch64_stub_hash_entry *stub_entry; |
2344 | struct elf_aarch64_link_hash_entry *h = | |
2345 | (struct elf_aarch64_link_hash_entry *) hash; | |
a06ea964 NC |
2346 | const asection *id_sec; |
2347 | ||
2348 | if ((input_section->flags & SEC_CODE) == 0) | |
2349 | return NULL; | |
2350 | ||
2351 | /* If this input section is part of a group of sections sharing one | |
2352 | stub section, then use the id of the first section in the group. | |
2353 | Stub names need to include a section id, as there may well be | |
2354 | more than one stub used to reach say, printf, and we need to | |
2355 | distinguish between them. */ | |
2356 | id_sec = htab->stub_group[input_section->id].link_sec; | |
2357 | ||
2358 | if (h != NULL && h->stub_cache != NULL | |
2359 | && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec) | |
2360 | { | |
2361 | stub_entry = h->stub_cache; | |
2362 | } | |
2363 | else | |
2364 | { | |
2365 | char *stub_name; | |
2366 | ||
cec5225b | 2367 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel); |
a06ea964 NC |
2368 | if (stub_name == NULL) |
2369 | return NULL; | |
2370 | ||
2371 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
2372 | stub_name, FALSE, FALSE); | |
2373 | if (h != NULL) | |
2374 | h->stub_cache = stub_entry; | |
2375 | ||
2376 | free (stub_name); | |
2377 | } | |
2378 | ||
2379 | return stub_entry; | |
2380 | } | |
2381 | ||
a06ea964 | 2382 | |
66585675 MS |
2383 | /* Create a stub section. */ |
2384 | ||
2385 | static asection * | |
2386 | _bfd_aarch64_create_stub_section (asection *section, | |
2387 | struct elf_aarch64_link_hash_table *htab) | |
2388 | { | |
2389 | size_t namelen; | |
2390 | bfd_size_type len; | |
2391 | char *s_name; | |
2392 | ||
2393 | namelen = strlen (section->name); | |
2394 | len = namelen + sizeof (STUB_SUFFIX); | |
2395 | s_name = bfd_alloc (htab->stub_bfd, len); | |
2396 | if (s_name == NULL) | |
2397 | return NULL; | |
2398 | ||
2399 | memcpy (s_name, section->name, namelen); | |
2400 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
2401 | return (*htab->add_stub_section) (s_name, section); | |
2402 | } | |
2403 | ||
2404 | ||
fc6d53be MS |
2405 | /* Find or create a stub section for a link section. |
2406 | ||
2407 | Fix or create the stub section used to collect stubs attached to | |
2408 | the specified link section. */ | |
2409 | ||
2410 | static asection * | |
2411 | _bfd_aarch64_get_stub_for_link_section (asection *link_section, | |
2412 | struct elf_aarch64_link_hash_table *htab) | |
2413 | { | |
2414 | if (htab->stub_group[link_section->id].stub_sec == NULL) | |
2415 | htab->stub_group[link_section->id].stub_sec | |
2416 | = _bfd_aarch64_create_stub_section (link_section, htab); | |
2417 | return htab->stub_group[link_section->id].stub_sec; | |
2418 | } | |
2419 | ||
2420 | ||
ef857521 MS |
2421 | /* Find or create a stub section in the stub group for an input |
2422 | section. */ | |
2423 | ||
2424 | static asection * | |
2425 | _bfd_aarch64_create_or_find_stub_sec (asection *section, | |
2426 | struct elf_aarch64_link_hash_table *htab) | |
a06ea964 | 2427 | { |
fc6d53be MS |
2428 | asection *link_sec = htab->stub_group[section->id].link_sec; |
2429 | return _bfd_aarch64_get_stub_for_link_section (link_sec, htab); | |
ef857521 MS |
2430 | } |
2431 | ||
2432 | ||
2433 | /* Add a new stub entry in the stub group associated with an input | |
2434 | section to the stub hash. Not all fields of the new stub entry are | |
2435 | initialised. */ | |
2436 | ||
2437 | static struct elf_aarch64_stub_hash_entry * | |
2438 | _bfd_aarch64_add_stub_entry_in_group (const char *stub_name, | |
2439 | asection *section, | |
2440 | struct elf_aarch64_link_hash_table *htab) | |
2441 | { | |
2442 | asection *link_sec; | |
2443 | asection *stub_sec; | |
2444 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
2445 | ||
2446 | link_sec = htab->stub_group[section->id].link_sec; | |
2447 | stub_sec = _bfd_aarch64_create_or_find_stub_sec (section, htab); | |
2448 | ||
a06ea964 NC |
2449 | /* Enter this entry into the linker stub hash table. */ |
2450 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
2451 | TRUE, FALSE); | |
2452 | if (stub_entry == NULL) | |
2453 | { | |
2454 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), | |
2455 | section->owner, stub_name); | |
2456 | return NULL; | |
2457 | } | |
2458 | ||
2459 | stub_entry->stub_sec = stub_sec; | |
2460 | stub_entry->stub_offset = 0; | |
2461 | stub_entry->id_sec = link_sec; | |
2462 | ||
2463 | return stub_entry; | |
2464 | } | |
2465 | ||
4106101c MS |
2466 | /* Add a new stub entry in the final stub section to the stub hash. |
2467 | Not all fields of the new stub entry are initialised. */ | |
2468 | ||
2469 | static struct elf_aarch64_stub_hash_entry * | |
2470 | _bfd_aarch64_add_stub_entry_after (const char *stub_name, | |
2471 | asection *link_section, | |
2472 | struct elf_aarch64_link_hash_table *htab) | |
2473 | { | |
2474 | asection *stub_sec; | |
2475 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
2476 | ||
2477 | stub_sec = _bfd_aarch64_get_stub_for_link_section (link_section, htab); | |
2478 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
2479 | TRUE, FALSE); | |
2480 | if (stub_entry == NULL) | |
2481 | { | |
2482 | (*_bfd_error_handler) (_("cannot create stub entry %s"), stub_name); | |
2483 | return NULL; | |
2484 | } | |
2485 | ||
2486 | stub_entry->stub_sec = stub_sec; | |
2487 | stub_entry->stub_offset = 0; | |
2488 | stub_entry->id_sec = link_section; | |
2489 | ||
2490 | return stub_entry; | |
2491 | } | |
2492 | ||
2493 | ||
a06ea964 NC |
2494 | static bfd_boolean |
2495 | aarch64_build_one_stub (struct bfd_hash_entry *gen_entry, | |
2496 | void *in_arg ATTRIBUTE_UNUSED) | |
2497 | { | |
cec5225b | 2498 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
2499 | asection *stub_sec; |
2500 | bfd *stub_bfd; | |
2501 | bfd_byte *loc; | |
2502 | bfd_vma sym_value; | |
68fcca92 JW |
2503 | bfd_vma veneered_insn_loc; |
2504 | bfd_vma veneer_entry_loc; | |
2505 | bfd_signed_vma branch_offset = 0; | |
a06ea964 NC |
2506 | unsigned int template_size; |
2507 | const uint32_t *template; | |
2508 | unsigned int i; | |
2509 | ||
2510 | /* Massage our args to the form they really have. */ | |
cec5225b | 2511 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
2512 | |
2513 | stub_sec = stub_entry->stub_sec; | |
2514 | ||
2515 | /* Make a note of the offset within the stubs for this entry. */ | |
2516 | stub_entry->stub_offset = stub_sec->size; | |
2517 | loc = stub_sec->contents + stub_entry->stub_offset; | |
2518 | ||
2519 | stub_bfd = stub_sec->owner; | |
2520 | ||
2521 | /* This is the address of the stub destination. */ | |
2522 | sym_value = (stub_entry->target_value | |
2523 | + stub_entry->target_section->output_offset | |
2524 | + stub_entry->target_section->output_section->vma); | |
2525 | ||
2526 | if (stub_entry->stub_type == aarch64_stub_long_branch) | |
2527 | { | |
2528 | bfd_vma place = (stub_entry->stub_offset + stub_sec->output_section->vma | |
2529 | + stub_sec->output_offset); | |
2530 | ||
2531 | /* See if we can relax the stub. */ | |
2532 | if (aarch64_valid_for_adrp_p (sym_value, place)) | |
2533 | stub_entry->stub_type = aarch64_select_branch_stub (sym_value, place); | |
2534 | } | |
2535 | ||
2536 | switch (stub_entry->stub_type) | |
2537 | { | |
2538 | case aarch64_stub_adrp_branch: | |
2539 | template = aarch64_adrp_branch_stub; | |
2540 | template_size = sizeof (aarch64_adrp_branch_stub); | |
2541 | break; | |
2542 | case aarch64_stub_long_branch: | |
2543 | template = aarch64_long_branch_stub; | |
2544 | template_size = sizeof (aarch64_long_branch_stub); | |
2545 | break; | |
68fcca92 JW |
2546 | case aarch64_stub_erratum_835769_veneer: |
2547 | template = aarch64_erratum_835769_stub; | |
2548 | template_size = sizeof (aarch64_erratum_835769_stub); | |
2549 | break; | |
4106101c MS |
2550 | case aarch64_stub_erratum_843419_veneer: |
2551 | template = aarch64_erratum_843419_stub; | |
2552 | template_size = sizeof (aarch64_erratum_843419_stub); | |
2553 | break; | |
a06ea964 | 2554 | default: |
8e2fe09f | 2555 | abort (); |
a06ea964 NC |
2556 | } |
2557 | ||
2558 | for (i = 0; i < (template_size / sizeof template[0]); i++) | |
2559 | { | |
2560 | bfd_putl32 (template[i], loc); | |
2561 | loc += 4; | |
2562 | } | |
2563 | ||
2564 | template_size = (template_size + 7) & ~7; | |
2565 | stub_sec->size += template_size; | |
2566 | ||
2567 | switch (stub_entry->stub_type) | |
2568 | { | |
2569 | case aarch64_stub_adrp_branch: | |
a6bb11b2 | 2570 | if (aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21), stub_bfd, stub_sec, |
a06ea964 NC |
2571 | stub_entry->stub_offset, sym_value)) |
2572 | /* The stub would not have been relaxed if the offset was out | |
2573 | of range. */ | |
2574 | BFD_FAIL (); | |
2575 | ||
93ca8569 TB |
2576 | if (aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC), stub_bfd, stub_sec, |
2577 | stub_entry->stub_offset + 4, sym_value)) | |
2578 | BFD_FAIL (); | |
a06ea964 NC |
2579 | break; |
2580 | ||
2581 | case aarch64_stub_long_branch: | |
2582 | /* We want the value relative to the address 12 bytes back from the | |
2583 | value itself. */ | |
93ca8569 TB |
2584 | if (aarch64_relocate (AARCH64_R (PRELNN), stub_bfd, stub_sec, |
2585 | stub_entry->stub_offset + 16, sym_value + 12)) | |
2586 | BFD_FAIL (); | |
a06ea964 | 2587 | break; |
68fcca92 JW |
2588 | |
2589 | case aarch64_stub_erratum_835769_veneer: | |
2590 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
2591 | + stub_entry->target_section->output_offset | |
2592 | + stub_entry->target_value; | |
2593 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
2594 | + stub_entry->stub_sec->output_offset | |
2595 | + stub_entry->stub_offset; | |
2596 | branch_offset = veneered_insn_loc - veneer_entry_loc; | |
2597 | branch_offset >>= 2; | |
2598 | branch_offset &= 0x3ffffff; | |
2599 | bfd_putl32 (stub_entry->veneered_insn, | |
2600 | stub_sec->contents + stub_entry->stub_offset); | |
2601 | bfd_putl32 (template[1] | branch_offset, | |
2602 | stub_sec->contents + stub_entry->stub_offset + 4); | |
2603 | break; | |
2604 | ||
4106101c MS |
2605 | case aarch64_stub_erratum_843419_veneer: |
2606 | if (aarch64_relocate (AARCH64_R (JUMP26), stub_bfd, stub_sec, | |
2607 | stub_entry->stub_offset + 4, sym_value + 4)) | |
2608 | BFD_FAIL (); | |
2609 | break; | |
2610 | ||
a06ea964 | 2611 | default: |
8e2fe09f | 2612 | abort (); |
a06ea964 NC |
2613 | } |
2614 | ||
2615 | return TRUE; | |
2616 | } | |
2617 | ||
2618 | /* As above, but don't actually build the stub. Just bump offset so | |
2619 | we know stub section sizes. */ | |
2620 | ||
2621 | static bfd_boolean | |
2622 | aarch64_size_one_stub (struct bfd_hash_entry *gen_entry, | |
2623 | void *in_arg ATTRIBUTE_UNUSED) | |
2624 | { | |
cec5225b | 2625 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
2626 | int size; |
2627 | ||
2628 | /* Massage our args to the form they really have. */ | |
cec5225b | 2629 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
2630 | |
2631 | switch (stub_entry->stub_type) | |
2632 | { | |
2633 | case aarch64_stub_adrp_branch: | |
2634 | size = sizeof (aarch64_adrp_branch_stub); | |
2635 | break; | |
2636 | case aarch64_stub_long_branch: | |
2637 | size = sizeof (aarch64_long_branch_stub); | |
2638 | break; | |
68fcca92 JW |
2639 | case aarch64_stub_erratum_835769_veneer: |
2640 | size = sizeof (aarch64_erratum_835769_stub); | |
2641 | break; | |
4106101c MS |
2642 | case aarch64_stub_erratum_843419_veneer: |
2643 | size = sizeof (aarch64_erratum_843419_stub); | |
2644 | break; | |
a06ea964 | 2645 | default: |
8e2fe09f | 2646 | abort (); |
a06ea964 NC |
2647 | } |
2648 | ||
2649 | size = (size + 7) & ~7; | |
2650 | stub_entry->stub_sec->size += size; | |
2651 | return TRUE; | |
2652 | } | |
2653 | ||
2654 | /* External entry points for sizing and building linker stubs. */ | |
2655 | ||
2656 | /* Set up various things so that we can make a list of input sections | |
2657 | for each output section included in the link. Returns -1 on error, | |
2658 | 0 when no stubs will be needed, and 1 on success. */ | |
2659 | ||
2660 | int | |
cec5225b | 2661 | elfNN_aarch64_setup_section_lists (bfd *output_bfd, |
a06ea964 NC |
2662 | struct bfd_link_info *info) |
2663 | { | |
2664 | bfd *input_bfd; | |
2665 | unsigned int bfd_count; | |
2666 | int top_id, top_index; | |
2667 | asection *section; | |
2668 | asection **input_list, **list; | |
2669 | bfd_size_type amt; | |
cec5225b YZ |
2670 | struct elf_aarch64_link_hash_table *htab = |
2671 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
2672 | |
2673 | if (!is_elf_hash_table (htab)) | |
2674 | return 0; | |
2675 | ||
2676 | /* Count the number of input BFDs and find the top input section id. */ | |
2677 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
c72f2fb2 | 2678 | input_bfd != NULL; input_bfd = input_bfd->link.next) |
a06ea964 NC |
2679 | { |
2680 | bfd_count += 1; | |
2681 | for (section = input_bfd->sections; | |
2682 | section != NULL; section = section->next) | |
2683 | { | |
2684 | if (top_id < section->id) | |
2685 | top_id = section->id; | |
2686 | } | |
2687 | } | |
2688 | htab->bfd_count = bfd_count; | |
2689 | ||
2690 | amt = sizeof (struct map_stub) * (top_id + 1); | |
2691 | htab->stub_group = bfd_zmalloc (amt); | |
2692 | if (htab->stub_group == NULL) | |
2693 | return -1; | |
2694 | ||
2695 | /* We can't use output_bfd->section_count here to find the top output | |
2696 | section index as some sections may have been removed, and | |
2697 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
2698 | for (section = output_bfd->sections, top_index = 0; | |
2699 | section != NULL; section = section->next) | |
2700 | { | |
2701 | if (top_index < section->index) | |
2702 | top_index = section->index; | |
2703 | } | |
2704 | ||
2705 | htab->top_index = top_index; | |
2706 | amt = sizeof (asection *) * (top_index + 1); | |
2707 | input_list = bfd_malloc (amt); | |
2708 | htab->input_list = input_list; | |
2709 | if (input_list == NULL) | |
2710 | return -1; | |
2711 | ||
2712 | /* For sections we aren't interested in, mark their entries with a | |
2713 | value we can check later. */ | |
2714 | list = input_list + top_index; | |
2715 | do | |
2716 | *list = bfd_abs_section_ptr; | |
2717 | while (list-- != input_list); | |
2718 | ||
2719 | for (section = output_bfd->sections; | |
2720 | section != NULL; section = section->next) | |
2721 | { | |
2722 | if ((section->flags & SEC_CODE) != 0) | |
2723 | input_list[section->index] = NULL; | |
2724 | } | |
2725 | ||
2726 | return 1; | |
2727 | } | |
2728 | ||
cec5225b | 2729 | /* Used by elfNN_aarch64_next_input_section and group_sections. */ |
a06ea964 NC |
2730 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
2731 | ||
2732 | /* The linker repeatedly calls this function for each input section, | |
2733 | in the order that input sections are linked into output sections. | |
2734 | Build lists of input sections to determine groupings between which | |
2735 | we may insert linker stubs. */ | |
2736 | ||
2737 | void | |
cec5225b | 2738 | elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec) |
a06ea964 | 2739 | { |
cec5225b YZ |
2740 | struct elf_aarch64_link_hash_table *htab = |
2741 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
2742 | |
2743 | if (isec->output_section->index <= htab->top_index) | |
2744 | { | |
2745 | asection **list = htab->input_list + isec->output_section->index; | |
2746 | ||
2747 | if (*list != bfd_abs_section_ptr) | |
2748 | { | |
2749 | /* Steal the link_sec pointer for our list. */ | |
2750 | /* This happens to make the list in reverse order, | |
2751 | which is what we want. */ | |
2752 | PREV_SEC (isec) = *list; | |
2753 | *list = isec; | |
2754 | } | |
2755 | } | |
2756 | } | |
2757 | ||
2758 | /* See whether we can group stub sections together. Grouping stub | |
2759 | sections may result in fewer stubs. More importantly, we need to | |
2760 | put all .init* and .fini* stubs at the beginning of the .init or | |
2761 | .fini output sections respectively, because glibc splits the | |
2762 | _init and _fini functions into multiple parts. Putting a stub in | |
2763 | the middle of a function is not a good idea. */ | |
2764 | ||
2765 | static void | |
cec5225b | 2766 | group_sections (struct elf_aarch64_link_hash_table *htab, |
a06ea964 NC |
2767 | bfd_size_type stub_group_size, |
2768 | bfd_boolean stubs_always_before_branch) | |
2769 | { | |
2770 | asection **list = htab->input_list + htab->top_index; | |
2771 | ||
2772 | do | |
2773 | { | |
2774 | asection *tail = *list; | |
2775 | ||
2776 | if (tail == bfd_abs_section_ptr) | |
2777 | continue; | |
2778 | ||
2779 | while (tail != NULL) | |
2780 | { | |
2781 | asection *curr; | |
2782 | asection *prev; | |
2783 | bfd_size_type total; | |
2784 | ||
2785 | curr = tail; | |
2786 | total = tail->size; | |
2787 | while ((prev = PREV_SEC (curr)) != NULL | |
2788 | && ((total += curr->output_offset - prev->output_offset) | |
2789 | < stub_group_size)) | |
2790 | curr = prev; | |
2791 | ||
2792 | /* OK, the size from the start of CURR to the end is less | |
2793 | than stub_group_size and thus can be handled by one stub | |
2794 | section. (Or the tail section is itself larger than | |
2795 | stub_group_size, in which case we may be toast.) | |
2796 | We should really be keeping track of the total size of | |
2797 | stubs added here, as stubs contribute to the final output | |
2798 | section size. */ | |
2799 | do | |
2800 | { | |
2801 | prev = PREV_SEC (tail); | |
2802 | /* Set up this stub group. */ | |
2803 | htab->stub_group[tail->id].link_sec = curr; | |
2804 | } | |
2805 | while (tail != curr && (tail = prev) != NULL); | |
2806 | ||
2807 | /* But wait, there's more! Input sections up to stub_group_size | |
2808 | bytes before the stub section can be handled by it too. */ | |
2809 | if (!stubs_always_before_branch) | |
2810 | { | |
2811 | total = 0; | |
2812 | while (prev != NULL | |
2813 | && ((total += tail->output_offset - prev->output_offset) | |
2814 | < stub_group_size)) | |
2815 | { | |
2816 | tail = prev; | |
2817 | prev = PREV_SEC (tail); | |
2818 | htab->stub_group[tail->id].link_sec = curr; | |
2819 | } | |
2820 | } | |
2821 | tail = prev; | |
2822 | } | |
2823 | } | |
2824 | while (list-- != htab->input_list); | |
2825 | ||
2826 | free (htab->input_list); | |
2827 | } | |
2828 | ||
2829 | #undef PREV_SEC | |
2830 | ||
68fcca92 JW |
2831 | #define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1)) |
2832 | ||
2833 | #define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5) | |
2834 | #define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5) | |
2835 | #define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5) | |
2836 | #define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5) | |
2837 | #define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5) | |
2838 | #define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5) | |
2839 | ||
2840 | #define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000) | |
2841 | #define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1) | |
2842 | #define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3) | |
2843 | #define AARCH64_ZR 0x1f | |
2844 | ||
2845 | /* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for | |
2846 | LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */ | |
2847 | ||
2848 | #define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1) | |
2849 | #define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000) | |
2850 | #define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000) | |
2851 | #define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000) | |
2852 | #define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000) | |
2853 | #define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000) | |
2854 | #define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000) | |
2855 | #define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000) | |
2856 | #define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000) | |
2857 | #define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400) | |
2858 | #define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800) | |
2859 | #define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00) | |
2860 | #define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800) | |
2861 | #define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000) | |
2862 | #define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000) | |
2863 | #define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000) | |
2864 | #define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000) | |
2865 | #define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000) | |
2866 | ||
3d14faea MS |
2867 | /* Classify an INSN if it is indeed a load/store. |
2868 | ||
2869 | Return TRUE if INSN is a LD/ST instruction otherwise return FALSE. | |
2870 | ||
2871 | For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2 | |
2872 | is set equal to RT. | |
2873 | ||
2874 | For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. | |
2875 | ||
2876 | */ | |
68fcca92 JW |
2877 | |
2878 | static bfd_boolean | |
3d14faea | 2879 | aarch64_mem_op_p (uint32_t insn, unsigned int *rt, unsigned int *rt2, |
68fcca92 JW |
2880 | bfd_boolean *pair, bfd_boolean *load) |
2881 | { | |
2882 | uint32_t opcode; | |
2883 | unsigned int r; | |
2884 | uint32_t opc = 0; | |
2885 | uint32_t v = 0; | |
2886 | uint32_t opc_v = 0; | |
2887 | ||
2888 | /* Bail out quickly if INSN doesn't fall into the the load-store | |
2889 | encoding space. */ | |
2890 | if (!AARCH64_LDST (insn)) | |
2891 | return FALSE; | |
2892 | ||
2893 | *pair = FALSE; | |
2894 | *load = FALSE; | |
2895 | if (AARCH64_LDST_EX (insn)) | |
2896 | { | |
2897 | *rt = AARCH64_RT (insn); | |
3d14faea | 2898 | *rt2 = *rt; |
68fcca92 JW |
2899 | if (AARCH64_BIT (insn, 21) == 1) |
2900 | { | |
2901 | *pair = TRUE; | |
3d14faea | 2902 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
2903 | } |
2904 | *load = AARCH64_LD (insn); | |
2905 | return TRUE; | |
2906 | } | |
2907 | else if (AARCH64_LDST_NAP (insn) | |
2908 | || AARCH64_LDSTP_PI (insn) | |
2909 | || AARCH64_LDSTP_O (insn) | |
2910 | || AARCH64_LDSTP_PRE (insn)) | |
2911 | { | |
2912 | *pair = TRUE; | |
2913 | *rt = AARCH64_RT (insn); | |
3d14faea | 2914 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
2915 | *load = AARCH64_LD (insn); |
2916 | return TRUE; | |
2917 | } | |
2918 | else if (AARCH64_LDST_PCREL (insn) | |
2919 | || AARCH64_LDST_UI (insn) | |
2920 | || AARCH64_LDST_PIIMM (insn) | |
2921 | || AARCH64_LDST_U (insn) | |
2922 | || AARCH64_LDST_PREIMM (insn) | |
2923 | || AARCH64_LDST_RO (insn) | |
2924 | || AARCH64_LDST_UIMM (insn)) | |
2925 | { | |
2926 | *rt = AARCH64_RT (insn); | |
3d14faea | 2927 | *rt2 = *rt; |
68fcca92 JW |
2928 | if (AARCH64_LDST_PCREL (insn)) |
2929 | *load = TRUE; | |
2930 | opc = AARCH64_BITS (insn, 22, 2); | |
2931 | v = AARCH64_BIT (insn, 26); | |
2932 | opc_v = opc | (v << 2); | |
2933 | *load = (opc_v == 1 || opc_v == 2 || opc_v == 3 | |
2934 | || opc_v == 5 || opc_v == 7); | |
2935 | return TRUE; | |
2936 | } | |
2937 | else if (AARCH64_LDST_SIMD_M (insn) | |
2938 | || AARCH64_LDST_SIMD_M_PI (insn)) | |
2939 | { | |
2940 | *rt = AARCH64_RT (insn); | |
2941 | *load = AARCH64_BIT (insn, 22); | |
2942 | opcode = (insn >> 12) & 0xf; | |
2943 | switch (opcode) | |
2944 | { | |
2945 | case 0: | |
2946 | case 2: | |
3d14faea | 2947 | *rt2 = *rt + 3; |
68fcca92 JW |
2948 | break; |
2949 | ||
2950 | case 4: | |
2951 | case 6: | |
3d14faea | 2952 | *rt2 = *rt + 2; |
68fcca92 JW |
2953 | break; |
2954 | ||
2955 | case 7: | |
3d14faea | 2956 | *rt2 = *rt; |
68fcca92 JW |
2957 | break; |
2958 | ||
2959 | case 8: | |
2960 | case 10: | |
3d14faea | 2961 | *rt2 = *rt + 1; |
68fcca92 JW |
2962 | break; |
2963 | ||
2964 | default: | |
2965 | return FALSE; | |
2966 | } | |
2967 | return TRUE; | |
2968 | } | |
2969 | else if (AARCH64_LDST_SIMD_S (insn) | |
2970 | || AARCH64_LDST_SIMD_S_PI (insn)) | |
2971 | { | |
2972 | *rt = AARCH64_RT (insn); | |
2973 | r = (insn >> 21) & 1; | |
2974 | *load = AARCH64_BIT (insn, 22); | |
2975 | opcode = (insn >> 13) & 0x7; | |
2976 | switch (opcode) | |
2977 | { | |
2978 | case 0: | |
2979 | case 2: | |
2980 | case 4: | |
3d14faea | 2981 | *rt2 = *rt + r; |
68fcca92 JW |
2982 | break; |
2983 | ||
2984 | case 1: | |
2985 | case 3: | |
2986 | case 5: | |
3d14faea | 2987 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
2988 | break; |
2989 | ||
2990 | case 6: | |
3d14faea | 2991 | *rt2 = *rt + r; |
68fcca92 JW |
2992 | break; |
2993 | ||
2994 | case 7: | |
3d14faea | 2995 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
2996 | break; |
2997 | ||
2998 | default: | |
2999 | return FALSE; | |
3000 | } | |
3001 | return TRUE; | |
3002 | } | |
3003 | ||
3004 | return FALSE; | |
3005 | } | |
3006 | ||
3007 | /* Return TRUE if INSN is multiply-accumulate. */ | |
3008 | ||
3009 | static bfd_boolean | |
3010 | aarch64_mlxl_p (uint32_t insn) | |
3011 | { | |
3012 | uint32_t op31 = AARCH64_OP31 (insn); | |
3013 | ||
3014 | if (AARCH64_MAC (insn) | |
3015 | && (op31 == 0 || op31 == 1 || op31 == 5) | |
3016 | /* Exclude MUL instructions which are encoded as a multiple accumulate | |
3017 | with RA = XZR. */ | |
3018 | && AARCH64_RA (insn) != AARCH64_ZR) | |
3019 | return TRUE; | |
3020 | ||
3021 | return FALSE; | |
3022 | } | |
3023 | ||
3024 | /* Some early revisions of the Cortex-A53 have an erratum (835769) whereby | |
3025 | it is possible for a 64-bit multiply-accumulate instruction to generate an | |
3026 | incorrect result. The details are quite complex and hard to | |
3027 | determine statically, since branches in the code may exist in some | |
3028 | circumstances, but all cases end with a memory (load, store, or | |
3029 | prefetch) instruction followed immediately by the multiply-accumulate | |
3030 | operation. We employ a linker patching technique, by moving the potentially | |
3031 | affected multiply-accumulate instruction into a patch region and replacing | |
3032 | the original instruction with a branch to the patch. This function checks | |
3033 | if INSN_1 is the memory operation followed by a multiply-accumulate | |
3034 | operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE | |
3035 | if INSN_1 and INSN_2 are safe. */ | |
3036 | ||
3037 | static bfd_boolean | |
3038 | aarch64_erratum_sequence (uint32_t insn_1, uint32_t insn_2) | |
3039 | { | |
3040 | uint32_t rt; | |
3d14faea | 3041 | uint32_t rt2; |
68fcca92 JW |
3042 | uint32_t rn; |
3043 | uint32_t rm; | |
3044 | uint32_t ra; | |
3045 | bfd_boolean pair; | |
3046 | bfd_boolean load; | |
3047 | ||
3048 | if (aarch64_mlxl_p (insn_2) | |
3d14faea | 3049 | && aarch64_mem_op_p (insn_1, &rt, &rt2, &pair, &load)) |
68fcca92 JW |
3050 | { |
3051 | /* Any SIMD memory op is independent of the subsequent MLA | |
3052 | by definition of the erratum. */ | |
3053 | if (AARCH64_BIT (insn_1, 26)) | |
3054 | return TRUE; | |
3055 | ||
3056 | /* If not SIMD, check for integer memory ops and MLA relationship. */ | |
3057 | rn = AARCH64_RN (insn_2); | |
3058 | ra = AARCH64_RA (insn_2); | |
3059 | rm = AARCH64_RM (insn_2); | |
3060 | ||
3061 | /* If this is a load and there's a true(RAW) dependency, we are safe | |
3062 | and this is not an erratum sequence. */ | |
3063 | if (load && | |
3064 | (rt == rn || rt == rm || rt == ra | |
3d14faea | 3065 | || (pair && (rt2 == rn || rt2 == rm || rt2 == ra)))) |
68fcca92 JW |
3066 | return FALSE; |
3067 | ||
3068 | /* We conservatively put out stubs for all other cases (including | |
3069 | writebacks). */ | |
3070 | return TRUE; | |
3071 | } | |
3072 | ||
3073 | return FALSE; | |
3074 | } | |
3075 | ||
520c7b56 JW |
3076 | /* Used to order a list of mapping symbols by address. */ |
3077 | ||
3078 | static int | |
3079 | elf_aarch64_compare_mapping (const void *a, const void *b) | |
3080 | { | |
3081 | const elf_aarch64_section_map *amap = (const elf_aarch64_section_map *) a; | |
3082 | const elf_aarch64_section_map *bmap = (const elf_aarch64_section_map *) b; | |
3083 | ||
3084 | if (amap->vma > bmap->vma) | |
3085 | return 1; | |
3086 | else if (amap->vma < bmap->vma) | |
3087 | return -1; | |
3088 | else if (amap->type > bmap->type) | |
3089 | /* Ensure results do not depend on the host qsort for objects with | |
3090 | multiple mapping symbols at the same address by sorting on type | |
3091 | after vma. */ | |
3092 | return 1; | |
3093 | else if (amap->type < bmap->type) | |
3094 | return -1; | |
3095 | else | |
3096 | return 0; | |
3097 | } | |
3098 | ||
2144188d | 3099 | |
35fee8b7 MS |
3100 | static char * |
3101 | _bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes) | |
3102 | { | |
3103 | char *stub_name = (char *) bfd_malloc | |
3104 | (strlen ("__erratum_835769_veneer_") + 16); | |
3105 | sprintf (stub_name,"__erratum_835769_veneer_%d", num_fixes); | |
3106 | return stub_name; | |
3107 | } | |
3108 | ||
4106101c | 3109 | /* Scan for Cortex-A53 erratum 835769 sequence. |
2144188d MS |
3110 | |
3111 | Return TRUE else FALSE on abnormal termination. */ | |
3112 | ||
68fcca92 | 3113 | static bfd_boolean |
5421cc6e MS |
3114 | _bfd_aarch64_erratum_835769_scan (bfd *input_bfd, |
3115 | struct bfd_link_info *info, | |
3116 | unsigned int *num_fixes_p) | |
68fcca92 JW |
3117 | { |
3118 | asection *section; | |
3119 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
68fcca92 | 3120 | unsigned int num_fixes = *num_fixes_p; |
68fcca92 JW |
3121 | |
3122 | if (htab == NULL) | |
2144188d | 3123 | return TRUE; |
68fcca92 JW |
3124 | |
3125 | for (section = input_bfd->sections; | |
3126 | section != NULL; | |
3127 | section = section->next) | |
3128 | { | |
3129 | bfd_byte *contents = NULL; | |
3130 | struct _aarch64_elf_section_data *sec_data; | |
3131 | unsigned int span; | |
3132 | ||
3133 | if (elf_section_type (section) != SHT_PROGBITS | |
3134 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
3135 | || (section->flags & SEC_EXCLUDE) != 0 | |
3136 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
3137 | || (section->output_section == bfd_abs_section_ptr)) | |
3138 | continue; | |
3139 | ||
3140 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
3141 | contents = elf_section_data (section)->this_hdr.contents; | |
3142 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
2144188d | 3143 | return FALSE; |
68fcca92 JW |
3144 | |
3145 | sec_data = elf_aarch64_section_data (section); | |
520c7b56 JW |
3146 | |
3147 | qsort (sec_data->map, sec_data->mapcount, | |
3148 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
3149 | ||
68fcca92 JW |
3150 | for (span = 0; span < sec_data->mapcount; span++) |
3151 | { | |
3152 | unsigned int span_start = sec_data->map[span].vma; | |
3153 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
3154 | ? sec_data->map[0].vma + section->size | |
3155 | : sec_data->map[span + 1].vma); | |
3156 | unsigned int i; | |
3157 | char span_type = sec_data->map[span].type; | |
3158 | ||
3159 | if (span_type == 'd') | |
3160 | continue; | |
3161 | ||
3162 | for (i = span_start; i + 4 < span_end; i += 4) | |
3163 | { | |
3164 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
3165 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
3166 | ||
3167 | if (aarch64_erratum_sequence (insn_1, insn_2)) | |
3168 | { | |
5421cc6e | 3169 | struct elf_aarch64_stub_hash_entry *stub_entry; |
35fee8b7 MS |
3170 | char *stub_name = _bfd_aarch64_erratum_835769_stub_name (num_fixes); |
3171 | if (! stub_name) | |
2144188d | 3172 | return FALSE; |
68fcca92 | 3173 | |
5421cc6e MS |
3174 | stub_entry = _bfd_aarch64_add_stub_entry_in_group (stub_name, |
3175 | section, | |
3176 | htab); | |
3177 | if (! stub_entry) | |
3178 | return FALSE; | |
68fcca92 | 3179 | |
5421cc6e MS |
3180 | stub_entry->stub_type = aarch64_stub_erratum_835769_veneer; |
3181 | stub_entry->target_section = section; | |
3182 | stub_entry->target_value = i + 4; | |
3183 | stub_entry->veneered_insn = insn_2; | |
3184 | stub_entry->output_name = stub_name; | |
68fcca92 JW |
3185 | num_fixes++; |
3186 | } | |
3187 | } | |
3188 | } | |
3189 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
3190 | free (contents); | |
3191 | } | |
3192 | ||
357d1523 MS |
3193 | *num_fixes_p = num_fixes; |
3194 | ||
2144188d | 3195 | return TRUE; |
68fcca92 JW |
3196 | } |
3197 | ||
13f622ec | 3198 | |
4106101c MS |
3199 | /* Test if instruction INSN is ADRP. */ |
3200 | ||
3201 | static bfd_boolean | |
3202 | _bfd_aarch64_adrp_p (uint32_t insn) | |
3203 | { | |
3204 | return ((insn & 0x9f000000) == 0x90000000); | |
3205 | } | |
3206 | ||
3207 | ||
3208 | /* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */ | |
3209 | ||
3210 | static bfd_boolean | |
3211 | _bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1, uint32_t insn_2, | |
3212 | uint32_t insn_3) | |
3213 | { | |
3214 | uint32_t rt; | |
3215 | uint32_t rt2; | |
3216 | bfd_boolean pair; | |
3217 | bfd_boolean load; | |
3218 | ||
3219 | return (aarch64_mem_op_p (insn_2, &rt, &rt2, &pair, &load) | |
3220 | && (!pair | |
3221 | || (pair && !load)) | |
3222 | && AARCH64_LDST_UIMM (insn_3) | |
3223 | && AARCH64_RN (insn_3) == AARCH64_RD (insn_1)); | |
3224 | } | |
3225 | ||
3226 | ||
3227 | /* Test for the presence of Cortex-A53 erratum 843419 instruction sequence. | |
3228 | ||
3229 | Return TRUE if section CONTENTS at offset I contains one of the | |
3230 | erratum 843419 sequences, otherwise return FALSE. If a sequence is | |
3231 | seen set P_VENEER_I to the offset of the final LOAD/STORE | |
3232 | instruction in the sequence. | |
3233 | */ | |
3234 | ||
3235 | static bfd_boolean | |
3236 | _bfd_aarch64_erratum_843419_p (bfd_byte *contents, bfd_vma vma, | |
3237 | bfd_vma i, bfd_vma span_end, | |
3238 | bfd_vma *p_veneer_i) | |
3239 | { | |
3240 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
3241 | ||
3242 | if (!_bfd_aarch64_adrp_p (insn_1)) | |
3243 | return FALSE; | |
3244 | ||
3245 | if (span_end < i + 12) | |
3246 | return FALSE; | |
3247 | ||
3248 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
3249 | uint32_t insn_3 = bfd_getl32 (contents + i + 8); | |
3250 | ||
3251 | if ((vma & 0xfff) != 0xff8 && (vma & 0xfff) != 0xffc) | |
3252 | return FALSE; | |
3253 | ||
3254 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_3)) | |
3255 | { | |
3256 | *p_veneer_i = i + 8; | |
3257 | return TRUE; | |
3258 | } | |
3259 | ||
3260 | if (span_end < i + 16) | |
3261 | return FALSE; | |
3262 | ||
3263 | uint32_t insn_4 = bfd_getl32 (contents + i + 12); | |
3264 | ||
3265 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_4)) | |
3266 | { | |
3267 | *p_veneer_i = i + 12; | |
3268 | return TRUE; | |
3269 | } | |
3270 | ||
3271 | return FALSE; | |
3272 | } | |
3273 | ||
3274 | ||
13f622ec MS |
3275 | /* Resize all stub sections. */ |
3276 | ||
3277 | static void | |
3278 | _bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table *htab) | |
3279 | { | |
3280 | asection *section; | |
3281 | ||
3282 | /* OK, we've added some stubs. Find out the new size of the | |
3283 | stub sections. */ | |
3284 | for (section = htab->stub_bfd->sections; | |
3285 | section != NULL; section = section->next) | |
3286 | { | |
3287 | /* Ignore non-stub sections. */ | |
3288 | if (!strstr (section->name, STUB_SUFFIX)) | |
3289 | continue; | |
3290 | section->size = 0; | |
3291 | } | |
3292 | ||
3293 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab); | |
13f622ec | 3294 | |
61865519 MS |
3295 | for (section = htab->stub_bfd->sections; |
3296 | section != NULL; section = section->next) | |
3297 | { | |
3298 | if (!strstr (section->name, STUB_SUFFIX)) | |
3299 | continue; | |
3300 | ||
3301 | if (section->size) | |
3302 | section->size += 4; | |
4106101c MS |
3303 | |
3304 | /* Ensure all stub sections have a size which is a multiple of | |
3305 | 4096. This is important in order to ensure that the insertion | |
3306 | of stub sections does not in itself move existing code around | |
3307 | in such a way that new errata sequences are created. */ | |
3308 | if (htab->fix_erratum_843419) | |
3309 | if (section->size) | |
3310 | section->size = BFD_ALIGN (section->size, 0x1000); | |
3311 | } | |
3312 | } | |
3313 | ||
3314 | ||
3315 | /* Construct an erratum 843419 workaround stub name. | |
3316 | */ | |
3317 | ||
3318 | static char * | |
3319 | _bfd_aarch64_erratum_843419_stub_name (asection *input_section, | |
3320 | bfd_vma offset) | |
3321 | { | |
3322 | const bfd_size_type len = 8 + 4 + 1 + 8 + 1 + 16 + 1; | |
3323 | char *stub_name = bfd_malloc (len); | |
3324 | ||
3325 | if (stub_name != NULL) | |
3326 | snprintf (stub_name, len, "e843419@%04x_%08x_%" BFD_VMA_FMT "x", | |
3327 | input_section->owner->id, | |
3328 | input_section->id, | |
3329 | offset); | |
3330 | return stub_name; | |
3331 | } | |
3332 | ||
3333 | /* Build a stub_entry structure describing an 843419 fixup. | |
3334 | ||
3335 | The stub_entry constructed is populated with the bit pattern INSN | |
3336 | of the instruction located at OFFSET within input SECTION. | |
3337 | ||
3338 | Returns TRUE on success. */ | |
3339 | ||
3340 | static bfd_boolean | |
3341 | _bfd_aarch64_erratum_843419_fixup (uint32_t insn, | |
3342 | bfd_vma adrp_offset, | |
3343 | bfd_vma ldst_offset, | |
3344 | asection *section, | |
3345 | struct bfd_link_info *info) | |
3346 | { | |
3347 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
3348 | char *stub_name; | |
3349 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
3350 | ||
3351 | stub_name = _bfd_aarch64_erratum_843419_stub_name (section, ldst_offset); | |
3352 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
3353 | FALSE, FALSE); | |
3354 | if (stub_entry) | |
3355 | { | |
3356 | free (stub_name); | |
3357 | return TRUE; | |
3358 | } | |
3359 | ||
3360 | /* We always place an 843419 workaround veneer in the stub section | |
3361 | attached to the input section in which an erratum sequence has | |
3362 | been found. This ensures that later in the link process (in | |
3363 | elfNN_aarch64_write_section) when we copy the veneered | |
3364 | instruction from the input section into the stub section the | |
3365 | copied instruction will have had any relocations applied to it. | |
3366 | If we placed workaround veneers in any other stub section then we | |
3367 | could not assume that all relocations have been processed on the | |
3368 | corresponding input section at the point we output the stub | |
3369 | section. | |
3370 | */ | |
3371 | ||
3372 | stub_entry = _bfd_aarch64_add_stub_entry_after (stub_name, section, htab); | |
3373 | if (stub_entry == NULL) | |
3374 | { | |
3375 | free (stub_name); | |
3376 | return FALSE; | |
3377 | } | |
3378 | ||
3379 | stub_entry->adrp_offset = adrp_offset; | |
3380 | stub_entry->target_value = ldst_offset; | |
3381 | stub_entry->target_section = section; | |
3382 | stub_entry->stub_type = aarch64_stub_erratum_843419_veneer; | |
3383 | stub_entry->veneered_insn = insn; | |
3384 | stub_entry->output_name = stub_name; | |
3385 | ||
3386 | return TRUE; | |
3387 | } | |
3388 | ||
3389 | ||
3390 | /* Scan an input section looking for the signature of erratum 843419. | |
3391 | ||
3392 | Scans input SECTION in INPUT_BFD looking for erratum 843419 | |
3393 | signatures, for each signature found a stub_entry is created | |
3394 | describing the location of the erratum for subsequent fixup. | |
3395 | ||
3396 | Return TRUE on successful scan, FALSE on failure to scan. | |
3397 | */ | |
3398 | ||
3399 | static bfd_boolean | |
3400 | _bfd_aarch64_erratum_843419_scan (bfd *input_bfd, asection *section, | |
3401 | struct bfd_link_info *info) | |
3402 | { | |
3403 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
3404 | ||
3405 | if (htab == NULL) | |
3406 | return TRUE; | |
3407 | ||
3408 | if (elf_section_type (section) != SHT_PROGBITS | |
3409 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
3410 | || (section->flags & SEC_EXCLUDE) != 0 | |
3411 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
3412 | || (section->output_section == bfd_abs_section_ptr)) | |
3413 | return TRUE; | |
3414 | ||
3415 | do | |
3416 | { | |
3417 | bfd_byte *contents = NULL; | |
3418 | struct _aarch64_elf_section_data *sec_data; | |
3419 | unsigned int span; | |
3420 | ||
3421 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
3422 | contents = elf_section_data (section)->this_hdr.contents; | |
3423 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
3424 | return FALSE; | |
3425 | ||
3426 | sec_data = elf_aarch64_section_data (section); | |
3427 | ||
3428 | qsort (sec_data->map, sec_data->mapcount, | |
3429 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
3430 | ||
3431 | for (span = 0; span < sec_data->mapcount; span++) | |
3432 | { | |
3433 | unsigned int span_start = sec_data->map[span].vma; | |
3434 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
3435 | ? sec_data->map[0].vma + section->size | |
3436 | : sec_data->map[span + 1].vma); | |
3437 | unsigned int i; | |
3438 | char span_type = sec_data->map[span].type; | |
3439 | ||
3440 | if (span_type == 'd') | |
3441 | continue; | |
3442 | ||
3443 | for (i = span_start; i + 8 < span_end; i += 4) | |
3444 | { | |
3445 | bfd_vma vma = (section->output_section->vma | |
3446 | + section->output_offset | |
3447 | + i); | |
3448 | bfd_vma veneer_i; | |
3449 | ||
3450 | if (_bfd_aarch64_erratum_843419_p | |
3451 | (contents, vma, i, span_end, &veneer_i)) | |
3452 | { | |
3453 | uint32_t insn = bfd_getl32 (contents + veneer_i); | |
3454 | ||
3455 | if (!_bfd_aarch64_erratum_843419_fixup (insn, i, veneer_i, | |
3456 | section, info)) | |
3457 | return FALSE; | |
3458 | } | |
3459 | } | |
3460 | } | |
3461 | ||
3462 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
3463 | free (contents); | |
61865519 | 3464 | } |
4106101c MS |
3465 | while (0); |
3466 | ||
3467 | return TRUE; | |
61865519 | 3468 | } |
13f622ec | 3469 | |
4106101c | 3470 | |
a06ea964 NC |
3471 | /* Determine and set the size of the stub section for a final link. |
3472 | ||
3473 | The basic idea here is to examine all the relocations looking for | |
3474 | PC-relative calls to a target that is unreachable with a "bl" | |
3475 | instruction. */ | |
3476 | ||
3477 | bfd_boolean | |
cec5225b | 3478 | elfNN_aarch64_size_stubs (bfd *output_bfd, |
a06ea964 NC |
3479 | bfd *stub_bfd, |
3480 | struct bfd_link_info *info, | |
3481 | bfd_signed_vma group_size, | |
3482 | asection * (*add_stub_section) (const char *, | |
3483 | asection *), | |
3484 | void (*layout_sections_again) (void)) | |
3485 | { | |
3486 | bfd_size_type stub_group_size; | |
3487 | bfd_boolean stubs_always_before_branch; | |
5421cc6e | 3488 | bfd_boolean stub_changed = FALSE; |
cec5225b | 3489 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); |
68fcca92 | 3490 | unsigned int num_erratum_835769_fixes = 0; |
a06ea964 NC |
3491 | |
3492 | /* Propagate mach to stub bfd, because it may not have been | |
3493 | finalized when we created stub_bfd. */ | |
3494 | bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd), | |
3495 | bfd_get_mach (output_bfd)); | |
3496 | ||
3497 | /* Stash our params away. */ | |
3498 | htab->stub_bfd = stub_bfd; | |
3499 | htab->add_stub_section = add_stub_section; | |
3500 | htab->layout_sections_again = layout_sections_again; | |
3501 | stubs_always_before_branch = group_size < 0; | |
3502 | if (group_size < 0) | |
3503 | stub_group_size = -group_size; | |
3504 | else | |
3505 | stub_group_size = group_size; | |
3506 | ||
3507 | if (stub_group_size == 1) | |
3508 | { | |
3509 | /* Default values. */ | |
b9eead84 | 3510 | /* AArch64 branch range is +-128MB. The value used is 1MB less. */ |
a06ea964 NC |
3511 | stub_group_size = 127 * 1024 * 1024; |
3512 | } | |
3513 | ||
3514 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
3515 | ||
4106101c MS |
3516 | (*htab->layout_sections_again) (); |
3517 | ||
5421cc6e MS |
3518 | if (htab->fix_erratum_835769) |
3519 | { | |
3520 | bfd *input_bfd; | |
3521 | ||
3522 | for (input_bfd = info->input_bfds; | |
3523 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
3524 | if (!_bfd_aarch64_erratum_835769_scan (input_bfd, info, | |
3525 | &num_erratum_835769_fixes)) | |
3526 | return FALSE; | |
3527 | ||
4106101c MS |
3528 | _bfd_aarch64_resize_stubs (htab); |
3529 | (*htab->layout_sections_again) (); | |
3530 | } | |
3531 | ||
3532 | if (htab->fix_erratum_843419) | |
3533 | { | |
3534 | bfd *input_bfd; | |
3535 | ||
3536 | for (input_bfd = info->input_bfds; | |
3537 | input_bfd != NULL; | |
3538 | input_bfd = input_bfd->link.next) | |
3539 | { | |
3540 | asection *section; | |
3541 | ||
3542 | for (section = input_bfd->sections; | |
3543 | section != NULL; | |
3544 | section = section->next) | |
3545 | if (!_bfd_aarch64_erratum_843419_scan (input_bfd, section, info)) | |
3546 | return FALSE; | |
3547 | } | |
3548 | ||
3549 | _bfd_aarch64_resize_stubs (htab); | |
3550 | (*htab->layout_sections_again) (); | |
5421cc6e MS |
3551 | } |
3552 | ||
a06ea964 NC |
3553 | while (1) |
3554 | { | |
3555 | bfd *input_bfd; | |
a06ea964 | 3556 | |
9b9971aa MS |
3557 | for (input_bfd = info->input_bfds; |
3558 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
a06ea964 NC |
3559 | { |
3560 | Elf_Internal_Shdr *symtab_hdr; | |
3561 | asection *section; | |
3562 | Elf_Internal_Sym *local_syms = NULL; | |
3563 | ||
3564 | /* We'll need the symbol table in a second. */ | |
3565 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3566 | if (symtab_hdr->sh_info == 0) | |
3567 | continue; | |
3568 | ||
3569 | /* Walk over each section attached to the input bfd. */ | |
3570 | for (section = input_bfd->sections; | |
3571 | section != NULL; section = section->next) | |
3572 | { | |
3573 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
3574 | ||
3575 | /* If there aren't any relocs, then there's nothing more | |
3576 | to do. */ | |
3577 | if ((section->flags & SEC_RELOC) == 0 | |
3578 | || section->reloc_count == 0 | |
3579 | || (section->flags & SEC_CODE) == 0) | |
3580 | continue; | |
3581 | ||
3582 | /* If this section is a link-once section that will be | |
3583 | discarded, then don't create any stubs. */ | |
3584 | if (section->output_section == NULL | |
3585 | || section->output_section->owner != output_bfd) | |
3586 | continue; | |
3587 | ||
3588 | /* Get the relocs. */ | |
3589 | internal_relocs | |
3590 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, | |
3591 | NULL, info->keep_memory); | |
3592 | if (internal_relocs == NULL) | |
3593 | goto error_ret_free_local; | |
3594 | ||
3595 | /* Now examine each relocation. */ | |
3596 | irela = internal_relocs; | |
3597 | irelaend = irela + section->reloc_count; | |
3598 | for (; irela < irelaend; irela++) | |
3599 | { | |
3600 | unsigned int r_type, r_indx; | |
cec5225b YZ |
3601 | enum elf_aarch64_stub_type stub_type; |
3602 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
a06ea964 NC |
3603 | asection *sym_sec; |
3604 | bfd_vma sym_value; | |
3605 | bfd_vma destination; | |
cec5225b | 3606 | struct elf_aarch64_link_hash_entry *hash; |
a06ea964 NC |
3607 | const char *sym_name; |
3608 | char *stub_name; | |
3609 | const asection *id_sec; | |
3610 | unsigned char st_type; | |
3611 | bfd_size_type len; | |
3612 | ||
cec5225b YZ |
3613 | r_type = ELFNN_R_TYPE (irela->r_info); |
3614 | r_indx = ELFNN_R_SYM (irela->r_info); | |
a06ea964 NC |
3615 | |
3616 | if (r_type >= (unsigned int) R_AARCH64_end) | |
3617 | { | |
3618 | bfd_set_error (bfd_error_bad_value); | |
3619 | error_ret_free_internal: | |
3620 | if (elf_section_data (section)->relocs == NULL) | |
3621 | free (internal_relocs); | |
3622 | goto error_ret_free_local; | |
3623 | } | |
3624 | ||
3625 | /* Only look for stubs on unconditional branch and | |
3626 | branch and link instructions. */ | |
a6bb11b2 YZ |
3627 | if (r_type != (unsigned int) AARCH64_R (CALL26) |
3628 | && r_type != (unsigned int) AARCH64_R (JUMP26)) | |
a06ea964 NC |
3629 | continue; |
3630 | ||
3631 | /* Now determine the call target, its name, value, | |
3632 | section. */ | |
3633 | sym_sec = NULL; | |
3634 | sym_value = 0; | |
3635 | destination = 0; | |
3636 | hash = NULL; | |
3637 | sym_name = NULL; | |
3638 | if (r_indx < symtab_hdr->sh_info) | |
3639 | { | |
3640 | /* It's a local symbol. */ | |
3641 | Elf_Internal_Sym *sym; | |
3642 | Elf_Internal_Shdr *hdr; | |
3643 | ||
3644 | if (local_syms == NULL) | |
3645 | { | |
3646 | local_syms | |
3647 | = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3648 | if (local_syms == NULL) | |
3649 | local_syms | |
3650 | = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
3651 | symtab_hdr->sh_info, 0, | |
3652 | NULL, NULL, NULL); | |
3653 | if (local_syms == NULL) | |
3654 | goto error_ret_free_internal; | |
3655 | } | |
3656 | ||
3657 | sym = local_syms + r_indx; | |
3658 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
3659 | sym_sec = hdr->bfd_section; | |
3660 | if (!sym_sec) | |
3661 | /* This is an undefined symbol. It can never | |
3662 | be resolved. */ | |
3663 | continue; | |
3664 | ||
3665 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
3666 | sym_value = sym->st_value; | |
3667 | destination = (sym_value + irela->r_addend | |
3668 | + sym_sec->output_offset | |
3669 | + sym_sec->output_section->vma); | |
3670 | st_type = ELF_ST_TYPE (sym->st_info); | |
3671 | sym_name | |
3672 | = bfd_elf_string_from_elf_section (input_bfd, | |
3673 | symtab_hdr->sh_link, | |
3674 | sym->st_name); | |
3675 | } | |
3676 | else | |
3677 | { | |
3678 | int e_indx; | |
3679 | ||
3680 | e_indx = r_indx - symtab_hdr->sh_info; | |
cec5225b | 3681 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
3682 | elf_sym_hashes (input_bfd)[e_indx]); |
3683 | ||
3684 | while (hash->root.root.type == bfd_link_hash_indirect | |
3685 | || hash->root.root.type == bfd_link_hash_warning) | |
cec5225b | 3686 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
3687 | hash->root.root.u.i.link); |
3688 | ||
3689 | if (hash->root.root.type == bfd_link_hash_defined | |
3690 | || hash->root.root.type == bfd_link_hash_defweak) | |
3691 | { | |
cec5225b YZ |
3692 | struct elf_aarch64_link_hash_table *globals = |
3693 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
3694 | sym_sec = hash->root.root.u.def.section; |
3695 | sym_value = hash->root.root.u.def.value; | |
3696 | /* For a destination in a shared library, | |
3697 | use the PLT stub as target address to | |
3698 | decide whether a branch stub is | |
3699 | needed. */ | |
3700 | if (globals->root.splt != NULL && hash != NULL | |
3701 | && hash->root.plt.offset != (bfd_vma) - 1) | |
3702 | { | |
3703 | sym_sec = globals->root.splt; | |
3704 | sym_value = hash->root.plt.offset; | |
3705 | if (sym_sec->output_section != NULL) | |
3706 | destination = (sym_value | |
3707 | + sym_sec->output_offset | |
3708 | + | |
3709 | sym_sec->output_section->vma); | |
3710 | } | |
3711 | else if (sym_sec->output_section != NULL) | |
3712 | destination = (sym_value + irela->r_addend | |
3713 | + sym_sec->output_offset | |
3714 | + sym_sec->output_section->vma); | |
3715 | } | |
3716 | else if (hash->root.root.type == bfd_link_hash_undefined | |
3717 | || (hash->root.root.type | |
3718 | == bfd_link_hash_undefweak)) | |
3719 | { | |
3720 | /* For a shared library, use the PLT stub as | |
3721 | target address to decide whether a long | |
3722 | branch stub is needed. | |
3723 | For absolute code, they cannot be handled. */ | |
cec5225b YZ |
3724 | struct elf_aarch64_link_hash_table *globals = |
3725 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
3726 | |
3727 | if (globals->root.splt != NULL && hash != NULL | |
3728 | && hash->root.plt.offset != (bfd_vma) - 1) | |
3729 | { | |
3730 | sym_sec = globals->root.splt; | |
3731 | sym_value = hash->root.plt.offset; | |
3732 | if (sym_sec->output_section != NULL) | |
3733 | destination = (sym_value | |
3734 | + sym_sec->output_offset | |
3735 | + | |
3736 | sym_sec->output_section->vma); | |
3737 | } | |
3738 | else | |
3739 | continue; | |
3740 | } | |
3741 | else | |
3742 | { | |
3743 | bfd_set_error (bfd_error_bad_value); | |
3744 | goto error_ret_free_internal; | |
3745 | } | |
3746 | st_type = ELF_ST_TYPE (hash->root.type); | |
3747 | sym_name = hash->root.root.root.string; | |
3748 | } | |
3749 | ||
3750 | /* Determine what (if any) linker stub is needed. */ | |
3751 | stub_type = aarch64_type_of_stub | |
3752 | (info, section, irela, st_type, hash, destination); | |
3753 | if (stub_type == aarch64_stub_none) | |
3754 | continue; | |
3755 | ||
3756 | /* Support for grouping stub sections. */ | |
3757 | id_sec = htab->stub_group[section->id].link_sec; | |
3758 | ||
3759 | /* Get the name of this stub. */ | |
cec5225b | 3760 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, hash, |
a06ea964 NC |
3761 | irela); |
3762 | if (!stub_name) | |
3763 | goto error_ret_free_internal; | |
3764 | ||
3765 | stub_entry = | |
3766 | aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
3767 | stub_name, FALSE, FALSE); | |
3768 | if (stub_entry != NULL) | |
3769 | { | |
3770 | /* The proper stub has already been created. */ | |
3771 | free (stub_name); | |
3772 | continue; | |
3773 | } | |
3774 | ||
ef857521 MS |
3775 | stub_entry = _bfd_aarch64_add_stub_entry_in_group |
3776 | (stub_name, section, htab); | |
a06ea964 NC |
3777 | if (stub_entry == NULL) |
3778 | { | |
3779 | free (stub_name); | |
3780 | goto error_ret_free_internal; | |
3781 | } | |
3782 | ||
3783 | stub_entry->target_value = sym_value; | |
3784 | stub_entry->target_section = sym_sec; | |
3785 | stub_entry->stub_type = stub_type; | |
3786 | stub_entry->h = hash; | |
3787 | stub_entry->st_type = st_type; | |
3788 | ||
3789 | if (sym_name == NULL) | |
3790 | sym_name = "unnamed"; | |
3791 | len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name); | |
3792 | stub_entry->output_name = bfd_alloc (htab->stub_bfd, len); | |
3793 | if (stub_entry->output_name == NULL) | |
3794 | { | |
3795 | free (stub_name); | |
3796 | goto error_ret_free_internal; | |
3797 | } | |
3798 | ||
3799 | snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME, | |
3800 | sym_name); | |
3801 | ||
3802 | stub_changed = TRUE; | |
3803 | } | |
3804 | ||
3805 | /* We're done with the internal relocs, free them. */ | |
3806 | if (elf_section_data (section)->relocs == NULL) | |
3807 | free (internal_relocs); | |
3808 | } | |
3809 | } | |
3810 | ||
3811 | if (!stub_changed) | |
3812 | break; | |
3813 | ||
13f622ec | 3814 | _bfd_aarch64_resize_stubs (htab); |
a06ea964 NC |
3815 | |
3816 | /* Ask the linker to do its stuff. */ | |
3817 | (*htab->layout_sections_again) (); | |
3818 | stub_changed = FALSE; | |
3819 | } | |
3820 | ||
3821 | return TRUE; | |
3822 | ||
3823 | error_ret_free_local: | |
3824 | return FALSE; | |
3825 | } | |
3826 | ||
3827 | /* Build all the stubs associated with the current output file. The | |
3828 | stubs are kept in a hash table attached to the main linker hash | |
3829 | table. We also set up the .plt entries for statically linked PIC | |
3830 | functions here. This function is called via aarch64_elf_finish in the | |
3831 | linker. */ | |
3832 | ||
3833 | bfd_boolean | |
cec5225b | 3834 | elfNN_aarch64_build_stubs (struct bfd_link_info *info) |
a06ea964 NC |
3835 | { |
3836 | asection *stub_sec; | |
3837 | struct bfd_hash_table *table; | |
cec5225b | 3838 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 3839 | |
cec5225b | 3840 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
3841 | |
3842 | for (stub_sec = htab->stub_bfd->sections; | |
3843 | stub_sec != NULL; stub_sec = stub_sec->next) | |
3844 | { | |
3845 | bfd_size_type size; | |
3846 | ||
3847 | /* Ignore non-stub sections. */ | |
3848 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
3849 | continue; | |
3850 | ||
3851 | /* Allocate memory to hold the linker stubs. */ | |
3852 | size = stub_sec->size; | |
3853 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); | |
3854 | if (stub_sec->contents == NULL && size != 0) | |
3855 | return FALSE; | |
3856 | stub_sec->size = 0; | |
61865519 MS |
3857 | |
3858 | bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents); | |
3859 | stub_sec->size += 4; | |
a06ea964 NC |
3860 | } |
3861 | ||
3862 | /* Build the stubs as directed by the stub hash table. */ | |
3863 | table = &htab->stub_hash_table; | |
3864 | bfd_hash_traverse (table, aarch64_build_one_stub, info); | |
3865 | ||
3866 | return TRUE; | |
3867 | } | |
3868 | ||
3869 | ||
3870 | /* Add an entry to the code/data map for section SEC. */ | |
3871 | ||
3872 | static void | |
cec5225b | 3873 | elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma) |
a06ea964 NC |
3874 | { |
3875 | struct _aarch64_elf_section_data *sec_data = | |
cec5225b | 3876 | elf_aarch64_section_data (sec); |
a06ea964 NC |
3877 | unsigned int newidx; |
3878 | ||
3879 | if (sec_data->map == NULL) | |
3880 | { | |
cec5225b | 3881 | sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
3882 | sec_data->mapcount = 0; |
3883 | sec_data->mapsize = 1; | |
3884 | } | |
3885 | ||
3886 | newidx = sec_data->mapcount++; | |
3887 | ||
3888 | if (sec_data->mapcount > sec_data->mapsize) | |
3889 | { | |
3890 | sec_data->mapsize *= 2; | |
3891 | sec_data->map = bfd_realloc_or_free | |
cec5225b | 3892 | (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
3893 | } |
3894 | ||
3895 | if (sec_data->map) | |
3896 | { | |
3897 | sec_data->map[newidx].vma = vma; | |
3898 | sec_data->map[newidx].type = type; | |
3899 | } | |
3900 | } | |
3901 | ||
3902 | ||
3903 | /* Initialise maps of insn/data for input BFDs. */ | |
3904 | void | |
cec5225b | 3905 | bfd_elfNN_aarch64_init_maps (bfd *abfd) |
a06ea964 NC |
3906 | { |
3907 | Elf_Internal_Sym *isymbuf; | |
3908 | Elf_Internal_Shdr *hdr; | |
3909 | unsigned int i, localsyms; | |
3910 | ||
3911 | /* Make sure that we are dealing with an AArch64 elf binary. */ | |
3912 | if (!is_aarch64_elf (abfd)) | |
3913 | return; | |
3914 | ||
3915 | if ((abfd->flags & DYNAMIC) != 0) | |
68fcca92 | 3916 | return; |
a06ea964 NC |
3917 | |
3918 | hdr = &elf_symtab_hdr (abfd); | |
3919 | localsyms = hdr->sh_info; | |
3920 | ||
3921 | /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field | |
3922 | should contain the number of local symbols, which should come before any | |
3923 | global symbols. Mapping symbols are always local. */ | |
3924 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL); | |
3925 | ||
3926 | /* No internal symbols read? Skip this BFD. */ | |
3927 | if (isymbuf == NULL) | |
3928 | return; | |
3929 | ||
3930 | for (i = 0; i < localsyms; i++) | |
3931 | { | |
3932 | Elf_Internal_Sym *isym = &isymbuf[i]; | |
3933 | asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
3934 | const char *name; | |
3935 | ||
3936 | if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL) | |
3937 | { | |
3938 | name = bfd_elf_string_from_elf_section (abfd, | |
3939 | hdr->sh_link, | |
3940 | isym->st_name); | |
3941 | ||
3942 | if (bfd_is_aarch64_special_symbol_name | |
3943 | (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP)) | |
cec5225b | 3944 | elfNN_aarch64_section_map_add (sec, name[1], isym->st_value); |
a06ea964 NC |
3945 | } |
3946 | } | |
3947 | } | |
3948 | ||
3949 | /* Set option values needed during linking. */ | |
3950 | void | |
cec5225b | 3951 | bfd_elfNN_aarch64_set_options (struct bfd *output_bfd, |
a06ea964 NC |
3952 | struct bfd_link_info *link_info, |
3953 | int no_enum_warn, | |
68fcca92 | 3954 | int no_wchar_warn, int pic_veneer, |
4106101c MS |
3955 | int fix_erratum_835769, |
3956 | int fix_erratum_843419) | |
a06ea964 | 3957 | { |
cec5225b | 3958 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 3959 | |
cec5225b | 3960 | globals = elf_aarch64_hash_table (link_info); |
a06ea964 | 3961 | globals->pic_veneer = pic_veneer; |
68fcca92 | 3962 | globals->fix_erratum_835769 = fix_erratum_835769; |
4106101c MS |
3963 | globals->fix_erratum_843419 = fix_erratum_843419; |
3964 | globals->fix_erratum_843419_adr = TRUE; | |
a06ea964 NC |
3965 | |
3966 | BFD_ASSERT (is_aarch64_elf (output_bfd)); | |
3967 | elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn; | |
3968 | elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn; | |
3969 | } | |
3970 | ||
a06ea964 NC |
3971 | static bfd_vma |
3972 | aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h, | |
cec5225b | 3973 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
3974 | *globals, struct bfd_link_info *info, |
3975 | bfd_vma value, bfd *output_bfd, | |
3976 | bfd_boolean *unresolved_reloc_p) | |
3977 | { | |
3978 | bfd_vma off = (bfd_vma) - 1; | |
3979 | asection *basegot = globals->root.sgot; | |
3980 | bfd_boolean dyn = globals->root.dynamic_sections_created; | |
3981 | ||
3982 | if (h != NULL) | |
3983 | { | |
a6bb11b2 | 3984 | BFD_ASSERT (basegot != NULL); |
a06ea964 NC |
3985 | off = h->got.offset; |
3986 | BFD_ASSERT (off != (bfd_vma) - 1); | |
3987 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
3988 | || (info->shared | |
3989 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
3990 | || (ELF_ST_VISIBILITY (h->other) | |
3991 | && h->root.type == bfd_link_hash_undefweak)) | |
3992 | { | |
3993 | /* This is actually a static link, or it is a -Bsymbolic link | |
3994 | and the symbol is defined locally. We must initialize this | |
3995 | entry in the global offset table. Since the offset must | |
a6bb11b2 YZ |
3996 | always be a multiple of 8 (4 in the case of ILP32), we use |
3997 | the least significant bit to record whether we have | |
3998 | initialized it already. | |
a06ea964 NC |
3999 | When doing a dynamic link, we create a .rel(a).got relocation |
4000 | entry to initialize the value. This is done in the | |
4001 | finish_dynamic_symbol routine. */ | |
4002 | if ((off & 1) != 0) | |
4003 | off &= ~1; | |
4004 | else | |
4005 | { | |
cec5225b | 4006 | bfd_put_NN (output_bfd, value, basegot->contents + off); |
a06ea964 NC |
4007 | h->got.offset |= 1; |
4008 | } | |
4009 | } | |
4010 | else | |
4011 | *unresolved_reloc_p = FALSE; | |
4012 | ||
4013 | off = off + basegot->output_section->vma + basegot->output_offset; | |
4014 | } | |
4015 | ||
4016 | return off; | |
4017 | } | |
4018 | ||
4019 | /* Change R_TYPE to a more efficient access model where possible, | |
4020 | return the new reloc type. */ | |
4021 | ||
a6bb11b2 YZ |
4022 | static bfd_reloc_code_real_type |
4023 | aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type, | |
a06ea964 NC |
4024 | struct elf_link_hash_entry *h) |
4025 | { | |
4026 | bfd_boolean is_local = h == NULL; | |
a6bb11b2 | 4027 | |
a06ea964 NC |
4028 | switch (r_type) |
4029 | { | |
a6bb11b2 | 4030 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 4031 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a6bb11b2 YZ |
4032 | return (is_local |
4033 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4034 | : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21); | |
4035 | ||
389b8029 MS |
4036 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
4037 | return (is_local | |
4038 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4039 | : r_type); | |
4040 | ||
1ada945d MS |
4041 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
4042 | return (is_local | |
4043 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4044 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4045 | ||
a6bb11b2 | 4046 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
ce336788 | 4047 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 YZ |
4048 | return (is_local |
4049 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4050 | : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC); | |
4051 | ||
4052 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: | |
4053 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type; | |
4054 | ||
4055 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
4056 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type; | |
4057 | ||
043bf05a MS |
4058 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
4059 | return r_type; | |
4060 | ||
3c12b054 MS |
4061 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
4062 | return (is_local | |
4063 | ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 | |
4064 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4065 | ||
a6bb11b2 YZ |
4066 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
4067 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
a06ea964 | 4068 | /* Instructions with these relocations will become NOPs. */ |
a6bb11b2 YZ |
4069 | return BFD_RELOC_AARCH64_NONE; |
4070 | ||
4071 | default: | |
4072 | break; | |
a06ea964 NC |
4073 | } |
4074 | ||
4075 | return r_type; | |
4076 | } | |
4077 | ||
4078 | static unsigned int | |
a6bb11b2 | 4079 | aarch64_reloc_got_type (bfd_reloc_code_real_type r_type) |
a06ea964 NC |
4080 | { |
4081 | switch (r_type) | |
4082 | { | |
a6bb11b2 YZ |
4083 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
4084 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 4085 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 4086 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 4087 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 4088 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
a06ea964 NC |
4089 | return GOT_NORMAL; |
4090 | ||
ce336788 | 4091 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 4092 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 4093 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a06ea964 NC |
4094 | return GOT_TLS_GD; |
4095 | ||
a6bb11b2 YZ |
4096 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
4097 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
389b8029 | 4098 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 4099 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a6bb11b2 | 4100 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
ce336788 | 4101 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: |
1ada945d | 4102 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
4103 | return GOT_TLSDESC_GD; |
4104 | ||
a6bb11b2 | 4105 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 4106 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 4107 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 4108 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
a06ea964 NC |
4109 | return GOT_TLS_IE; |
4110 | ||
a6bb11b2 YZ |
4111 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
4112 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: | |
4113 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: | |
4114 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: | |
4115 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
4116 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: | |
4117 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
4118 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
a06ea964 | 4119 | return GOT_UNKNOWN; |
a6bb11b2 YZ |
4120 | |
4121 | default: | |
4122 | break; | |
a06ea964 NC |
4123 | } |
4124 | return GOT_UNKNOWN; | |
4125 | } | |
4126 | ||
4127 | static bfd_boolean | |
4128 | aarch64_can_relax_tls (bfd *input_bfd, | |
4129 | struct bfd_link_info *info, | |
a6bb11b2 | 4130 | bfd_reloc_code_real_type r_type, |
a06ea964 NC |
4131 | struct elf_link_hash_entry *h, |
4132 | unsigned long r_symndx) | |
4133 | { | |
4134 | unsigned int symbol_got_type; | |
4135 | unsigned int reloc_got_type; | |
4136 | ||
4137 | if (! IS_AARCH64_TLS_RELOC (r_type)) | |
4138 | return FALSE; | |
4139 | ||
cec5225b | 4140 | symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx); |
a06ea964 NC |
4141 | reloc_got_type = aarch64_reloc_got_type (r_type); |
4142 | ||
4143 | if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type)) | |
4144 | return TRUE; | |
4145 | ||
4146 | if (info->shared) | |
4147 | return FALSE; | |
4148 | ||
4149 | if (h && h->root.type == bfd_link_hash_undefweak) | |
4150 | return FALSE; | |
4151 | ||
4152 | return TRUE; | |
4153 | } | |
4154 | ||
a6bb11b2 YZ |
4155 | /* Given the relocation code R_TYPE, return the relaxed bfd reloc |
4156 | enumerator. */ | |
4157 | ||
4158 | static bfd_reloc_code_real_type | |
a06ea964 NC |
4159 | aarch64_tls_transition (bfd *input_bfd, |
4160 | struct bfd_link_info *info, | |
4161 | unsigned int r_type, | |
4162 | struct elf_link_hash_entry *h, | |
4163 | unsigned long r_symndx) | |
4164 | { | |
a6bb11b2 YZ |
4165 | bfd_reloc_code_real_type bfd_r_type |
4166 | = elfNN_aarch64_bfd_reloc_from_type (r_type); | |
a06ea964 | 4167 | |
a6bb11b2 YZ |
4168 | if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx)) |
4169 | return bfd_r_type; | |
4170 | ||
4171 | return aarch64_tls_transition_without_check (bfd_r_type, h); | |
a06ea964 NC |
4172 | } |
4173 | ||
4174 | /* Return the base VMA address which should be subtracted from real addresses | |
a6bb11b2 | 4175 | when resolving R_AARCH64_TLS_DTPREL relocation. */ |
a06ea964 NC |
4176 | |
4177 | static bfd_vma | |
4178 | dtpoff_base (struct bfd_link_info *info) | |
4179 | { | |
4180 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
4181 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); | |
4182 | return elf_hash_table (info)->tls_sec->vma; | |
4183 | } | |
4184 | ||
a06ea964 NC |
4185 | /* Return the base VMA address which should be subtracted from real addresses |
4186 | when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */ | |
4187 | ||
4188 | static bfd_vma | |
4189 | tpoff_base (struct bfd_link_info *info) | |
4190 | { | |
4191 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
4192 | ||
4193 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
ac21917f | 4194 | BFD_ASSERT (htab->tls_sec != NULL); |
a06ea964 NC |
4195 | |
4196 | bfd_vma base = align_power ((bfd_vma) TCB_SIZE, | |
4197 | htab->tls_sec->alignment_power); | |
4198 | return htab->tls_sec->vma - base; | |
4199 | } | |
4200 | ||
4201 | static bfd_vma * | |
4202 | symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4203 | unsigned long r_symndx) | |
4204 | { | |
4205 | /* Calculate the address of the GOT entry for symbol | |
4206 | referred to in h. */ | |
4207 | if (h != NULL) | |
4208 | return &h->got.offset; | |
4209 | else | |
4210 | { | |
4211 | /* local symbol */ | |
4212 | struct elf_aarch64_local_symbol *l; | |
4213 | ||
cec5225b | 4214 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
4215 | return &l[r_symndx].got_offset; |
4216 | } | |
4217 | } | |
4218 | ||
4219 | static void | |
4220 | symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4221 | unsigned long r_symndx) | |
4222 | { | |
4223 | bfd_vma *p; | |
4224 | p = symbol_got_offset_ref (input_bfd, h, r_symndx); | |
4225 | *p |= 1; | |
4226 | } | |
4227 | ||
4228 | static int | |
4229 | symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4230 | unsigned long r_symndx) | |
4231 | { | |
4232 | bfd_vma value; | |
4233 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
4234 | return value & 1; | |
4235 | } | |
4236 | ||
4237 | static bfd_vma | |
4238 | symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4239 | unsigned long r_symndx) | |
4240 | { | |
4241 | bfd_vma value; | |
4242 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
4243 | value &= ~1; | |
4244 | return value; | |
4245 | } | |
4246 | ||
4247 | static bfd_vma * | |
4248 | symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4249 | unsigned long r_symndx) | |
4250 | { | |
4251 | /* Calculate the address of the GOT entry for symbol | |
4252 | referred to in h. */ | |
4253 | if (h != NULL) | |
4254 | { | |
cec5225b YZ |
4255 | struct elf_aarch64_link_hash_entry *eh; |
4256 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
4257 | return &eh->tlsdesc_got_jump_table_offset; |
4258 | } | |
4259 | else | |
4260 | { | |
4261 | /* local symbol */ | |
4262 | struct elf_aarch64_local_symbol *l; | |
4263 | ||
cec5225b | 4264 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
4265 | return &l[r_symndx].tlsdesc_got_jump_table_offset; |
4266 | } | |
4267 | } | |
4268 | ||
4269 | static void | |
4270 | symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4271 | unsigned long r_symndx) | |
4272 | { | |
4273 | bfd_vma *p; | |
4274 | p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
4275 | *p |= 1; | |
4276 | } | |
4277 | ||
4278 | static int | |
4279 | symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd, | |
4280 | struct elf_link_hash_entry *h, | |
4281 | unsigned long r_symndx) | |
4282 | { | |
4283 | bfd_vma value; | |
4284 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
4285 | return value & 1; | |
4286 | } | |
4287 | ||
4288 | static bfd_vma | |
4289 | symbol_tlsdesc_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4290 | unsigned long r_symndx) | |
4291 | { | |
4292 | bfd_vma value; | |
4293 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
4294 | value &= ~1; | |
4295 | return value; | |
4296 | } | |
4297 | ||
68fcca92 JW |
4298 | /* Data for make_branch_to_erratum_835769_stub(). */ |
4299 | ||
4300 | struct erratum_835769_branch_to_stub_data | |
4301 | { | |
4106101c | 4302 | struct bfd_link_info *info; |
68fcca92 JW |
4303 | asection *output_section; |
4304 | bfd_byte *contents; | |
4305 | }; | |
4306 | ||
4307 | /* Helper to insert branches to erratum 835769 stubs in the right | |
4308 | places for a particular section. */ | |
4309 | ||
4310 | static bfd_boolean | |
4311 | make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry, | |
4312 | void *in_arg) | |
4313 | { | |
4314 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
4315 | struct erratum_835769_branch_to_stub_data *data; | |
4316 | bfd_byte *contents; | |
4317 | unsigned long branch_insn = 0; | |
4318 | bfd_vma veneered_insn_loc, veneer_entry_loc; | |
4319 | bfd_signed_vma branch_offset; | |
4320 | unsigned int target; | |
4321 | bfd *abfd; | |
4322 | ||
4323 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
4324 | data = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
4325 | ||
4326 | if (stub_entry->target_section != data->output_section | |
4327 | || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer) | |
4328 | return TRUE; | |
4329 | ||
4330 | contents = data->contents; | |
4331 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
4332 | + stub_entry->target_section->output_offset | |
4333 | + stub_entry->target_value; | |
4334 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
4335 | + stub_entry->stub_sec->output_offset | |
4336 | + stub_entry->stub_offset; | |
4337 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
4338 | ||
4339 | abfd = stub_entry->target_section->owner; | |
4340 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4341 | (*_bfd_error_handler) | |
4342 | (_("%B: error: Erratum 835769 stub out " | |
4343 | "of range (input file too large)"), abfd); | |
4344 | ||
4345 | target = stub_entry->target_value; | |
4346 | branch_insn = 0x14000000; | |
4347 | branch_offset >>= 2; | |
4348 | branch_offset &= 0x3ffffff; | |
4349 | branch_insn |= branch_offset; | |
4350 | bfd_putl32 (branch_insn, &contents[target]); | |
4351 | ||
4352 | return TRUE; | |
4353 | } | |
4354 | ||
4106101c MS |
4355 | |
4356 | static bfd_boolean | |
4357 | _bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry, | |
4358 | void *in_arg) | |
4359 | { | |
4360 | struct elf_aarch64_stub_hash_entry *stub_entry | |
4361 | = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
4362 | struct erratum_835769_branch_to_stub_data *data | |
4363 | = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
4364 | struct bfd_link_info *info; | |
4365 | struct elf_aarch64_link_hash_table *htab; | |
4366 | bfd_byte *contents; | |
4367 | asection *section; | |
4368 | bfd *abfd; | |
4369 | bfd_vma place; | |
4370 | uint32_t insn; | |
4371 | ||
4372 | info = data->info; | |
4373 | contents = data->contents; | |
4374 | section = data->output_section; | |
4375 | ||
4376 | htab = elf_aarch64_hash_table (info); | |
4377 | ||
4378 | if (stub_entry->target_section != section | |
4379 | || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer) | |
4380 | return TRUE; | |
4381 | ||
4382 | insn = bfd_getl32 (contents + stub_entry->target_value); | |
4383 | bfd_putl32 (insn, | |
4384 | stub_entry->stub_sec->contents + stub_entry->stub_offset); | |
4385 | ||
4386 | place = (section->output_section->vma + section->output_offset | |
4387 | + stub_entry->adrp_offset); | |
4388 | insn = bfd_getl32 (contents + stub_entry->adrp_offset); | |
4389 | ||
4390 | if ((insn & AARCH64_ADRP_OP_MASK) != AARCH64_ADRP_OP) | |
4391 | abort (); | |
4392 | ||
4393 | bfd_signed_vma imm = | |
4394 | (_bfd_aarch64_sign_extend | |
4395 | ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33) | |
4396 | - (place & 0xfff)); | |
4397 | ||
4398 | if (htab->fix_erratum_843419_adr | |
4399 | && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM)) | |
4400 | { | |
4401 | insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm) | |
4402 | | AARCH64_RT (insn)); | |
4403 | bfd_putl32 (insn, contents + stub_entry->adrp_offset); | |
4404 | } | |
4405 | else | |
4406 | { | |
4407 | bfd_vma veneered_insn_loc; | |
4408 | bfd_vma veneer_entry_loc; | |
4409 | bfd_signed_vma branch_offset; | |
4410 | uint32_t branch_insn; | |
4411 | ||
4412 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
4413 | + stub_entry->target_section->output_offset | |
4414 | + stub_entry->target_value; | |
4415 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
4416 | + stub_entry->stub_sec->output_offset | |
4417 | + stub_entry->stub_offset; | |
4418 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
4419 | ||
4420 | abfd = stub_entry->target_section->owner; | |
4421 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4422 | (*_bfd_error_handler) | |
4423 | (_("%B: error: Erratum 843419 stub out " | |
4424 | "of range (input file too large)"), abfd); | |
4425 | ||
4426 | branch_insn = 0x14000000; | |
4427 | branch_offset >>= 2; | |
4428 | branch_offset &= 0x3ffffff; | |
4429 | branch_insn |= branch_offset; | |
4430 | bfd_putl32 (branch_insn, contents + stub_entry->target_value); | |
4431 | } | |
4432 | return TRUE; | |
4433 | } | |
4434 | ||
4435 | ||
68fcca92 JW |
4436 | static bfd_boolean |
4437 | elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, | |
4438 | struct bfd_link_info *link_info, | |
4439 | asection *sec, | |
4440 | bfd_byte *contents) | |
4441 | ||
4442 | { | |
4443 | struct elf_aarch64_link_hash_table *globals = | |
f872121a | 4444 | elf_aarch64_hash_table (link_info); |
68fcca92 JW |
4445 | |
4446 | if (globals == NULL) | |
4447 | return FALSE; | |
4448 | ||
4449 | /* Fix code to point to erratum 835769 stubs. */ | |
4450 | if (globals->fix_erratum_835769) | |
4451 | { | |
4452 | struct erratum_835769_branch_to_stub_data data; | |
4453 | ||
4106101c | 4454 | data.info = link_info; |
68fcca92 JW |
4455 | data.output_section = sec; |
4456 | data.contents = contents; | |
4457 | bfd_hash_traverse (&globals->stub_hash_table, | |
4458 | make_branch_to_erratum_835769_stub, &data); | |
4459 | } | |
4460 | ||
4106101c MS |
4461 | if (globals->fix_erratum_843419) |
4462 | { | |
4463 | struct erratum_835769_branch_to_stub_data data; | |
4464 | ||
4465 | data.info = link_info; | |
4466 | data.output_section = sec; | |
4467 | data.contents = contents; | |
4468 | bfd_hash_traverse (&globals->stub_hash_table, | |
4469 | _bfd_aarch64_erratum_843419_branch_to_stub, &data); | |
4470 | } | |
4471 | ||
68fcca92 JW |
4472 | return FALSE; |
4473 | } | |
4474 | ||
a06ea964 NC |
4475 | /* Perform a relocation as part of a final link. */ |
4476 | static bfd_reloc_status_type | |
cec5225b | 4477 | elfNN_aarch64_final_link_relocate (reloc_howto_type *howto, |
a06ea964 NC |
4478 | bfd *input_bfd, |
4479 | bfd *output_bfd, | |
4480 | asection *input_section, | |
4481 | bfd_byte *contents, | |
4482 | Elf_Internal_Rela *rel, | |
4483 | bfd_vma value, | |
4484 | struct bfd_link_info *info, | |
4485 | asection *sym_sec, | |
4486 | struct elf_link_hash_entry *h, | |
4487 | bfd_boolean *unresolved_reloc_p, | |
4488 | bfd_boolean save_addend, | |
1419bbe5 WN |
4489 | bfd_vma *saved_addend, |
4490 | Elf_Internal_Sym *sym) | |
a06ea964 | 4491 | { |
1419bbe5 | 4492 | Elf_Internal_Shdr *symtab_hdr; |
a06ea964 | 4493 | unsigned int r_type = howto->type; |
a6bb11b2 YZ |
4494 | bfd_reloc_code_real_type bfd_r_type |
4495 | = elfNN_aarch64_bfd_reloc_from_howto (howto); | |
4496 | bfd_reloc_code_real_type new_bfd_r_type; | |
a06ea964 NC |
4497 | unsigned long r_symndx; |
4498 | bfd_byte *hit_data = contents + rel->r_offset; | |
b53b1bed | 4499 | bfd_vma place, off; |
a06ea964 | 4500 | bfd_signed_vma signed_addend; |
cec5225b | 4501 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 4502 | bfd_boolean weak_undef_p; |
b53b1bed | 4503 | asection *base_got; |
a06ea964 | 4504 | |
cec5225b | 4505 | globals = elf_aarch64_hash_table (info); |
a06ea964 | 4506 | |
1419bbe5 WN |
4507 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
4508 | ||
a06ea964 NC |
4509 | BFD_ASSERT (is_aarch64_elf (input_bfd)); |
4510 | ||
cec5225b | 4511 | r_symndx = ELFNN_R_SYM (rel->r_info); |
a06ea964 NC |
4512 | |
4513 | /* It is possible to have linker relaxations on some TLS access | |
4514 | models. Update our information here. */ | |
a6bb11b2 YZ |
4515 | new_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, h, r_symndx); |
4516 | if (new_bfd_r_type != bfd_r_type) | |
4517 | { | |
4518 | bfd_r_type = new_bfd_r_type; | |
4519 | howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type); | |
4520 | BFD_ASSERT (howto != NULL); | |
4521 | r_type = howto->type; | |
4522 | } | |
a06ea964 NC |
4523 | |
4524 | place = input_section->output_section->vma | |
4525 | + input_section->output_offset + rel->r_offset; | |
4526 | ||
4527 | /* Get addend, accumulating the addend for consecutive relocs | |
4528 | which refer to the same offset. */ | |
4529 | signed_addend = saved_addend ? *saved_addend : 0; | |
4530 | signed_addend += rel->r_addend; | |
4531 | ||
4532 | weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak | |
4533 | : bfd_is_und_section (sym_sec)); | |
a6bb11b2 | 4534 | |
1419bbe5 WN |
4535 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
4536 | it here if it is defined in a non-shared object. */ | |
4537 | if (h != NULL | |
4538 | && h->type == STT_GNU_IFUNC | |
4539 | && h->def_regular) | |
4540 | { | |
4541 | asection *plt; | |
4542 | const char *name; | |
99ad26cb | 4543 | bfd_vma addend = 0; |
1419bbe5 WN |
4544 | |
4545 | if ((input_section->flags & SEC_ALLOC) == 0 | |
4546 | || h->plt.offset == (bfd_vma) -1) | |
4547 | abort (); | |
4548 | ||
4549 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
4550 | plt = globals->root.splt ? globals->root.splt : globals->root.iplt; | |
4551 | value = (plt->output_section->vma + plt->output_offset + h->plt.offset); | |
4552 | ||
4553 | switch (bfd_r_type) | |
4554 | { | |
4555 | default: | |
4556 | if (h->root.root.string) | |
4557 | name = h->root.root.string; | |
4558 | else | |
4559 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
4560 | NULL); | |
4561 | (*_bfd_error_handler) | |
4562 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
4563 | "symbol `%s' isn't handled by %s"), input_bfd, | |
4564 | howto->name, name, __FUNCTION__); | |
4565 | bfd_set_error (bfd_error_bad_value); | |
4566 | return FALSE; | |
4567 | ||
4568 | case BFD_RELOC_AARCH64_NN: | |
4569 | if (rel->r_addend != 0) | |
4570 | { | |
4571 | if (h->root.root.string) | |
4572 | name = h->root.root.string; | |
4573 | else | |
4574 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
4575 | sym, NULL); | |
4576 | (*_bfd_error_handler) | |
4577 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
4578 | "symbol `%s' has non-zero addend: %d"), | |
4579 | input_bfd, howto->name, name, rel->r_addend); | |
4580 | bfd_set_error (bfd_error_bad_value); | |
4581 | return FALSE; | |
4582 | } | |
4583 | ||
4584 | /* Generate dynamic relocation only when there is a | |
4585 | non-GOT reference in a shared object. */ | |
4586 | if (info->shared && h->non_got_ref) | |
4587 | { | |
4588 | Elf_Internal_Rela outrel; | |
4589 | asection *sreloc; | |
4590 | ||
4591 | /* Need a dynamic relocation to get the real function | |
4592 | address. */ | |
4593 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
4594 | info, | |
4595 | input_section, | |
4596 | rel->r_offset); | |
4597 | if (outrel.r_offset == (bfd_vma) -1 | |
4598 | || outrel.r_offset == (bfd_vma) -2) | |
4599 | abort (); | |
4600 | ||
4601 | outrel.r_offset += (input_section->output_section->vma | |
4602 | + input_section->output_offset); | |
4603 | ||
4604 | if (h->dynindx == -1 | |
4605 | || h->forced_local | |
4606 | || info->executable) | |
4607 | { | |
4608 | /* This symbol is resolved locally. */ | |
4609 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
4610 | outrel.r_addend = (h->root.u.def.value | |
4611 | + h->root.u.def.section->output_section->vma | |
4612 | + h->root.u.def.section->output_offset); | |
4613 | } | |
4614 | else | |
4615 | { | |
4616 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); | |
4617 | outrel.r_addend = 0; | |
4618 | } | |
4619 | ||
4620 | sreloc = globals->root.irelifunc; | |
4621 | elf_append_rela (output_bfd, sreloc, &outrel); | |
4622 | ||
4623 | /* If this reloc is against an external symbol, we | |
4624 | do not want to fiddle with the addend. Otherwise, | |
4625 | we need to include the symbol value so that it | |
4626 | becomes an addend for the dynamic reloc. For an | |
4627 | internal symbol, we have updated addend. */ | |
4628 | return bfd_reloc_ok; | |
4629 | } | |
4630 | /* FALLTHROUGH */ | |
1419bbe5 | 4631 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 4632 | case BFD_RELOC_AARCH64_JUMP26: |
1419bbe5 WN |
4633 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
4634 | signed_addend, | |
4635 | weak_undef_p); | |
4636 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, | |
4637 | howto, value); | |
1419bbe5 WN |
4638 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
4639 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 4640 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 4641 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 4642 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 4643 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
1419bbe5 WN |
4644 | base_got = globals->root.sgot; |
4645 | off = h->got.offset; | |
4646 | ||
4647 | if (base_got == NULL) | |
4648 | abort (); | |
4649 | ||
4650 | if (off == (bfd_vma) -1) | |
4651 | { | |
4652 | bfd_vma plt_index; | |
4653 | ||
4654 | /* We can't use h->got.offset here to save state, or | |
4655 | even just remember the offset, as finish_dynamic_symbol | |
4656 | would use that as offset into .got. */ | |
4657 | ||
4658 | if (globals->root.splt != NULL) | |
4659 | { | |
b1ee0cc4 WN |
4660 | plt_index = ((h->plt.offset - globals->plt_header_size) / |
4661 | globals->plt_entry_size); | |
1419bbe5 WN |
4662 | off = (plt_index + 3) * GOT_ENTRY_SIZE; |
4663 | base_got = globals->root.sgotplt; | |
4664 | } | |
4665 | else | |
4666 | { | |
4667 | plt_index = h->plt.offset / globals->plt_entry_size; | |
4668 | off = plt_index * GOT_ENTRY_SIZE; | |
4669 | base_got = globals->root.igotplt; | |
4670 | } | |
4671 | ||
4672 | if (h->dynindx == -1 | |
4673 | || h->forced_local | |
4674 | || info->symbolic) | |
4675 | { | |
4676 | /* This references the local definition. We must | |
4677 | initialize this entry in the global offset table. | |
4678 | Since the offset must always be a multiple of 8, | |
4679 | we use the least significant bit to record | |
4680 | whether we have initialized it already. | |
4681 | ||
4682 | When doing a dynamic link, we create a .rela.got | |
4683 | relocation entry to initialize the value. This | |
4684 | is done in the finish_dynamic_symbol routine. */ | |
4685 | if ((off & 1) != 0) | |
4686 | off &= ~1; | |
4687 | else | |
4688 | { | |
4689 | bfd_put_NN (output_bfd, value, | |
4690 | base_got->contents + off); | |
4691 | /* Note that this is harmless as -1 | 1 still is -1. */ | |
4692 | h->got.offset |= 1; | |
4693 | } | |
4694 | } | |
4695 | value = (base_got->output_section->vma | |
4696 | + base_got->output_offset + off); | |
4697 | } | |
4698 | else | |
4699 | value = aarch64_calculate_got_entry_vma (h, globals, info, | |
4700 | value, output_bfd, | |
4701 | unresolved_reloc_p); | |
7018c030 JW |
4702 | if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
4703 | || bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
99ad26cb JW |
4704 | addend = (globals->root.sgot->output_section->vma |
4705 | + globals->root.sgot->output_offset); | |
1419bbe5 | 4706 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
99ad26cb | 4707 | addend, weak_undef_p); |
1419bbe5 | 4708 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value); |
1419bbe5 | 4709 | case BFD_RELOC_AARCH64_ADD_LO12: |
ce336788 | 4710 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: |
1419bbe5 WN |
4711 | break; |
4712 | } | |
4713 | } | |
4714 | ||
a6bb11b2 | 4715 | switch (bfd_r_type) |
a06ea964 | 4716 | { |
a6bb11b2 YZ |
4717 | case BFD_RELOC_AARCH64_NONE: |
4718 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
a06ea964 NC |
4719 | *unresolved_reloc_p = FALSE; |
4720 | return bfd_reloc_ok; | |
4721 | ||
a6bb11b2 | 4722 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
4723 | |
4724 | /* When generating a shared object or relocatable executable, these | |
4725 | relocations are copied into the output file to be resolved at | |
4726 | run time. */ | |
4727 | if (((info->shared == TRUE) || globals->root.is_relocatable_executable) | |
4728 | && (input_section->flags & SEC_ALLOC) | |
4729 | && (h == NULL | |
4730 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
4731 | || h->root.type != bfd_link_hash_undefweak)) | |
4732 | { | |
4733 | Elf_Internal_Rela outrel; | |
4734 | bfd_byte *loc; | |
4735 | bfd_boolean skip, relocate; | |
4736 | asection *sreloc; | |
4737 | ||
4738 | *unresolved_reloc_p = FALSE; | |
4739 | ||
a06ea964 NC |
4740 | skip = FALSE; |
4741 | relocate = FALSE; | |
4742 | ||
4743 | outrel.r_addend = signed_addend; | |
4744 | outrel.r_offset = | |
4745 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
4746 | rel->r_offset); | |
4747 | if (outrel.r_offset == (bfd_vma) - 1) | |
4748 | skip = TRUE; | |
4749 | else if (outrel.r_offset == (bfd_vma) - 2) | |
4750 | { | |
4751 | skip = TRUE; | |
4752 | relocate = TRUE; | |
4753 | } | |
4754 | ||
4755 | outrel.r_offset += (input_section->output_section->vma | |
4756 | + input_section->output_offset); | |
4757 | ||
4758 | if (skip) | |
4759 | memset (&outrel, 0, sizeof outrel); | |
4760 | else if (h != NULL | |
4761 | && h->dynindx != -1 | |
0941db69 | 4762 | && (!info->shared || !SYMBOLIC_BIND (info, h) || !h->def_regular)) |
cec5225b | 4763 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); |
a06ea964 NC |
4764 | else |
4765 | { | |
4766 | int symbol; | |
4767 | ||
4768 | /* On SVR4-ish systems, the dynamic loader cannot | |
4769 | relocate the text and data segments independently, | |
4770 | so the symbol does not matter. */ | |
4771 | symbol = 0; | |
a6bb11b2 | 4772 | outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE)); |
a06ea964 NC |
4773 | outrel.r_addend += value; |
4774 | } | |
4775 | ||
1419bbe5 WN |
4776 | sreloc = elf_section_data (input_section)->sreloc; |
4777 | if (sreloc == NULL || sreloc->contents == NULL) | |
4778 | return bfd_reloc_notsupported; | |
4779 | ||
4780 | loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals); | |
cec5225b | 4781 | bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc); |
a06ea964 | 4782 | |
1419bbe5 | 4783 | if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size) |
a06ea964 NC |
4784 | { |
4785 | /* Sanity to check that we have previously allocated | |
4786 | sufficient space in the relocation section for the | |
4787 | number of relocations we actually want to emit. */ | |
4788 | abort (); | |
4789 | } | |
4790 | ||
4791 | /* If this reloc is against an external symbol, we do not want to | |
4792 | fiddle with the addend. Otherwise, we need to include the symbol | |
4793 | value so that it becomes an addend for the dynamic reloc. */ | |
4794 | if (!relocate) | |
4795 | return bfd_reloc_ok; | |
4796 | ||
4797 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
4798 | contents, rel->r_offset, value, | |
4799 | signed_addend); | |
4800 | } | |
4801 | else | |
4802 | value += signed_addend; | |
4803 | break; | |
4804 | ||
a6bb11b2 | 4805 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 4806 | case BFD_RELOC_AARCH64_JUMP26: |
a06ea964 NC |
4807 | { |
4808 | asection *splt = globals->root.splt; | |
4809 | bfd_boolean via_plt_p = | |
4810 | splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1; | |
4811 | ||
4812 | /* A call to an undefined weak symbol is converted to a jump to | |
4813 | the next instruction unless a PLT entry will be created. | |
4814 | The jump to the next instruction is optimized as a NOP. | |
4815 | Do the same for local undefined symbols. */ | |
4816 | if (weak_undef_p && ! via_plt_p) | |
4817 | { | |
4818 | bfd_putl32 (INSN_NOP, hit_data); | |
4819 | return bfd_reloc_ok; | |
4820 | } | |
4821 | ||
4822 | /* If the call goes through a PLT entry, make sure to | |
4823 | check distance to the right destination address. */ | |
4824 | if (via_plt_p) | |
4825 | { | |
4826 | value = (splt->output_section->vma | |
4827 | + splt->output_offset + h->plt.offset); | |
4828 | *unresolved_reloc_p = FALSE; | |
4829 | } | |
4830 | ||
4831 | /* If the target symbol is global and marked as a function the | |
4832 | relocation applies a function call or a tail call. In this | |
4833 | situation we can veneer out of range branches. The veneers | |
4834 | use IP0 and IP1 hence cannot be used arbitrary out of range | |
4835 | branches that occur within the body of a function. */ | |
4836 | if (h && h->type == STT_FUNC) | |
4837 | { | |
4838 | /* Check if a stub has to be inserted because the destination | |
4839 | is too far away. */ | |
4840 | if (! aarch64_valid_branch_p (value, place)) | |
4841 | { | |
4842 | /* The target is out of reach, so redirect the branch to | |
4843 | the local stub for this function. */ | |
cec5225b YZ |
4844 | struct elf_aarch64_stub_hash_entry *stub_entry; |
4845 | stub_entry = elfNN_aarch64_get_stub_entry (input_section, | |
a06ea964 NC |
4846 | sym_sec, h, |
4847 | rel, globals); | |
4848 | if (stub_entry != NULL) | |
4849 | value = (stub_entry->stub_offset | |
4850 | + stub_entry->stub_sec->output_offset | |
4851 | + stub_entry->stub_sec->output_section->vma); | |
4852 | } | |
4853 | } | |
4854 | } | |
caed7120 YZ |
4855 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
4856 | signed_addend, weak_undef_p); | |
a06ea964 NC |
4857 | break; |
4858 | ||
dcbd20eb JW |
4859 | case BFD_RELOC_AARCH64_16_PCREL: |
4860 | case BFD_RELOC_AARCH64_32_PCREL: | |
4861 | case BFD_RELOC_AARCH64_64_PCREL: | |
ce336788 JW |
4862 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
4863 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
4864 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
4865 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
dcbd20eb JW |
4866 | if (info->shared |
4867 | && (input_section->flags & SEC_ALLOC) != 0 | |
4868 | && (input_section->flags & SEC_READONLY) != 0 | |
4869 | && h != NULL | |
4870 | && !h->def_regular) | |
4871 | { | |
4872 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
4873 | ||
4874 | (*_bfd_error_handler) | |
4875 | (_("%B: relocation %s against external symbol `%s' can not be used" | |
4876 | " when making a shared object; recompile with -fPIC"), | |
4877 | input_bfd, elfNN_aarch64_howto_table[howto_index].name, | |
4878 | h->root.root.string); | |
4879 | bfd_set_error (bfd_error_bad_value); | |
4880 | return FALSE; | |
4881 | } | |
4882 | ||
a6bb11b2 YZ |
4883 | case BFD_RELOC_AARCH64_16: |
4884 | #if ARCH_SIZE == 64 | |
4885 | case BFD_RELOC_AARCH64_32: | |
4886 | #endif | |
4887 | case BFD_RELOC_AARCH64_ADD_LO12: | |
a6bb11b2 | 4888 | case BFD_RELOC_AARCH64_BRANCH19: |
ce336788 | 4889 | case BFD_RELOC_AARCH64_LDST128_LO12: |
a6bb11b2 YZ |
4890 | case BFD_RELOC_AARCH64_LDST16_LO12: |
4891 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
4892 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
ce336788 | 4893 | case BFD_RELOC_AARCH64_LDST8_LO12: |
a6bb11b2 YZ |
4894 | case BFD_RELOC_AARCH64_MOVW_G0: |
4895 | case BFD_RELOC_AARCH64_MOVW_G0_NC: | |
ce336788 | 4896 | case BFD_RELOC_AARCH64_MOVW_G0_S: |
a6bb11b2 YZ |
4897 | case BFD_RELOC_AARCH64_MOVW_G1: |
4898 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
ce336788 | 4899 | case BFD_RELOC_AARCH64_MOVW_G1_S: |
a6bb11b2 YZ |
4900 | case BFD_RELOC_AARCH64_MOVW_G2: |
4901 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
ce336788 | 4902 | case BFD_RELOC_AARCH64_MOVW_G2_S: |
a6bb11b2 | 4903 | case BFD_RELOC_AARCH64_MOVW_G3: |
a6bb11b2 | 4904 | case BFD_RELOC_AARCH64_TSTBR14: |
caed7120 YZ |
4905 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
4906 | signed_addend, weak_undef_p); | |
a06ea964 NC |
4907 | break; |
4908 | ||
a6bb11b2 YZ |
4909 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
4910 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 4911 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 4912 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 4913 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 4914 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
a06ea964 NC |
4915 | if (globals->root.sgot == NULL) |
4916 | BFD_ASSERT (h != NULL); | |
4917 | ||
4918 | if (h != NULL) | |
4919 | { | |
99ad26cb | 4920 | bfd_vma addend = 0; |
a06ea964 NC |
4921 | value = aarch64_calculate_got_entry_vma (h, globals, info, value, |
4922 | output_bfd, | |
4923 | unresolved_reloc_p); | |
7018c030 JW |
4924 | if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
4925 | || bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
99ad26cb JW |
4926 | addend = (globals->root.sgot->output_section->vma |
4927 | + globals->root.sgot->output_offset); | |
caed7120 | 4928 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
99ad26cb | 4929 | addend, weak_undef_p); |
a06ea964 | 4930 | } |
b53b1bed JW |
4931 | else |
4932 | { | |
99ad26cb | 4933 | bfd_vma addend = 0; |
b53b1bed JW |
4934 | struct elf_aarch64_local_symbol *locals |
4935 | = elf_aarch64_locals (input_bfd); | |
4936 | ||
4937 | if (locals == NULL) | |
4938 | { | |
4939 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
4940 | (*_bfd_error_handler) | |
4941 | (_("%B: Local symbol descriptor table be NULL when applying " | |
4942 | "relocation %s against local symbol"), | |
4943 | input_bfd, elfNN_aarch64_howto_table[howto_index].name); | |
4944 | abort (); | |
4945 | } | |
4946 | ||
4947 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
4948 | base_got = globals->root.sgot; | |
4949 | bfd_vma got_entry_addr = (base_got->output_section->vma | |
4950 | + base_got->output_offset + off); | |
4951 | ||
4952 | if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
4953 | { | |
4954 | bfd_put_64 (output_bfd, value, base_got->contents + off); | |
4955 | ||
4956 | if (info->shared) | |
4957 | { | |
4958 | asection *s; | |
4959 | Elf_Internal_Rela outrel; | |
4960 | ||
4961 | /* For local symbol, we have done absolute relocation in static | |
4962 | linking stageh. While for share library, we need to update | |
4963 | the content of GOT entry according to the share objects | |
4964 | loading base address. So we need to generate a | |
4965 | R_AARCH64_RELATIVE reloc for dynamic linker. */ | |
4966 | s = globals->root.srelgot; | |
4967 | if (s == NULL) | |
4968 | abort (); | |
4969 | ||
4970 | outrel.r_offset = got_entry_addr; | |
4971 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); | |
4972 | outrel.r_addend = value; | |
4973 | elf_append_rela (output_bfd, s, &outrel); | |
4974 | } | |
4975 | ||
4976 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
4977 | } | |
4978 | ||
4979 | /* Update the relocation value to GOT entry addr as we have transformed | |
4980 | the direct data access into indirect data access through GOT. */ | |
4981 | value = got_entry_addr; | |
99ad26cb | 4982 | |
7018c030 JW |
4983 | if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
4984 | || bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
99ad26cb JW |
4985 | addend = base_got->output_section->vma + base_got->output_offset; |
4986 | ||
4987 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, | |
4988 | addend, weak_undef_p); | |
b53b1bed JW |
4989 | } |
4990 | ||
a06ea964 NC |
4991 | break; |
4992 | ||
ce336788 | 4993 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 4994 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 4995 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 4996 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 4997 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 4998 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 4999 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
a06ea964 NC |
5000 | if (globals->root.sgot == NULL) |
5001 | return bfd_reloc_notsupported; | |
5002 | ||
5003 | value = (symbol_got_offset (input_bfd, h, r_symndx) | |
5004 | + globals->root.sgot->output_section->vma | |
f44a1f8e | 5005 | + globals->root.sgot->output_offset); |
a06ea964 | 5006 | |
caed7120 YZ |
5007 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5008 | 0, weak_undef_p); | |
a06ea964 NC |
5009 | *unresolved_reloc_p = FALSE; |
5010 | break; | |
5011 | ||
a6bb11b2 YZ |
5012 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
5013 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: | |
5014 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: | |
5015 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: | |
5016 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
5017 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: | |
5018 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
5019 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
caed7120 YZ |
5020 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5021 | signed_addend - tpoff_base (info), | |
5022 | weak_undef_p); | |
a06ea964 NC |
5023 | *unresolved_reloc_p = FALSE; |
5024 | break; | |
5025 | ||
7bcccb57 MS |
5026 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
5027 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: | |
a6bb11b2 | 5028 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 5029 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 5030 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
7bcccb57 | 5031 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: |
a6bb11b2 | 5032 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
1ada945d | 5033 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
5034 | if (globals->root.sgot == NULL) |
5035 | return bfd_reloc_notsupported; | |
a06ea964 NC |
5036 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) |
5037 | + globals->root.sgotplt->output_section->vma | |
f44a1f8e | 5038 | + globals->root.sgotplt->output_offset |
a06ea964 NC |
5039 | + globals->sgotplt_jump_table_size); |
5040 | ||
caed7120 YZ |
5041 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5042 | 0, weak_undef_p); | |
a06ea964 NC |
5043 | *unresolved_reloc_p = FALSE; |
5044 | break; | |
5045 | ||
5046 | default: | |
5047 | return bfd_reloc_notsupported; | |
5048 | } | |
5049 | ||
5050 | if (saved_addend) | |
5051 | *saved_addend = value; | |
5052 | ||
5053 | /* Only apply the final relocation in a sequence. */ | |
5054 | if (save_addend) | |
5055 | return bfd_reloc_continue; | |
5056 | ||
caed7120 YZ |
5057 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, |
5058 | howto, value); | |
a06ea964 NC |
5059 | } |
5060 | ||
5061 | /* Handle TLS relaxations. Relaxing is possible for symbols that use | |
5062 | R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static | |
5063 | link. | |
5064 | ||
5065 | Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller | |
5066 | is to then call final_link_relocate. Return other values in the | |
5067 | case of error. */ | |
5068 | ||
5069 | static bfd_reloc_status_type | |
cec5225b | 5070 | elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals, |
a06ea964 NC |
5071 | bfd *input_bfd, bfd_byte *contents, |
5072 | Elf_Internal_Rela *rel, struct elf_link_hash_entry *h) | |
5073 | { | |
5074 | bfd_boolean is_local = h == NULL; | |
cec5225b | 5075 | unsigned int r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
5076 | unsigned long insn; |
5077 | ||
5078 | BFD_ASSERT (globals && input_bfd && contents && rel); | |
5079 | ||
a6bb11b2 | 5080 | switch (elfNN_aarch64_bfd_reloc_from_type (r_type)) |
a06ea964 | 5081 | { |
a6bb11b2 | 5082 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 5083 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a06ea964 NC |
5084 | if (is_local) |
5085 | { | |
5086 | /* GD->LE relaxation: | |
5087 | adrp x0, :tlsgd:var => movz x0, :tprel_g1:var | |
5088 | or | |
5089 | adrp x0, :tlsdesc:var => movz x0, :tprel_g1:var | |
5090 | */ | |
5091 | bfd_putl32 (0xd2a00000, contents + rel->r_offset); | |
5092 | return bfd_reloc_continue; | |
5093 | } | |
5094 | else | |
5095 | { | |
5096 | /* GD->IE relaxation: | |
5097 | adrp x0, :tlsgd:var => adrp x0, :gottprel:var | |
5098 | or | |
5099 | adrp x0, :tlsdesc:var => adrp x0, :gottprel:var | |
5100 | */ | |
a06ea964 NC |
5101 | return bfd_reloc_continue; |
5102 | } | |
5103 | ||
389b8029 MS |
5104 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
5105 | BFD_ASSERT (0); | |
5106 | break; | |
5107 | ||
1ada945d MS |
5108 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
5109 | if (is_local) | |
5110 | { | |
5111 | /* Tiny TLSDESC->LE relaxation: | |
5112 | ldr x1, :tlsdesc:var => movz x0, #:tprel_g1:var | |
5113 | adr x0, :tlsdesc:var => movk x0, #:tprel_g0_nc:var | |
5114 | .tlsdesccall var | |
5115 | blr x1 => nop | |
5116 | */ | |
5117 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); | |
5118 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
5119 | ||
5120 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5121 | AARCH64_R (TLSLE_MOVW_TPREL_G0_NC)); | |
5122 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5123 | ||
5124 | bfd_putl32 (0xd2a00000, contents + rel->r_offset); | |
5125 | bfd_putl32 (0xf2800000, contents + rel->r_offset + 4); | |
5126 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); | |
5127 | return bfd_reloc_continue; | |
5128 | } | |
5129 | else | |
5130 | { | |
5131 | /* Tiny TLSDESC->IE relaxation: | |
5132 | ldr x1, :tlsdesc:var => ldr x0, :gottprel:var | |
5133 | adr x0, :tlsdesc:var => nop | |
5134 | .tlsdesccall var | |
5135 | blr x1 => nop | |
5136 | */ | |
5137 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); | |
5138 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
5139 | ||
5140 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5141 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5142 | ||
5143 | bfd_putl32 (0x58000000, contents + rel->r_offset); | |
5144 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4); | |
5145 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); | |
5146 | return bfd_reloc_continue; | |
5147 | } | |
5148 | ||
3c12b054 MS |
5149 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
5150 | if (is_local) | |
5151 | { | |
5152 | /* Tiny GD->LE relaxation: | |
5153 | adr x0, :tlsgd:var => mrs x1, tpidr_el0 | |
5154 | bl __tls_get_addr => add x0, x1, #:tprel_hi12:x, lsl #12 | |
5155 | nop => add x0, x0, #:tprel_lo12_nc:x | |
5156 | */ | |
5157 | ||
5158 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
5159 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
5160 | ||
5161 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0); | |
5162 | bfd_putl32 (0x91400020, contents + rel->r_offset + 4); | |
5163 | bfd_putl32 (0x91000000, contents + rel->r_offset + 8); | |
5164 | ||
5165 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5166 | AARCH64_R (TLSLE_ADD_TPREL_LO12_NC)); | |
5167 | rel[1].r_offset = rel->r_offset + 8; | |
5168 | ||
5169 | /* Move the current relocation to the second instruction in | |
5170 | the sequence. */ | |
5171 | rel->r_offset += 4; | |
5172 | rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5173 | AARCH64_R (TLSLE_ADD_TPREL_HI12)); | |
5174 | return bfd_reloc_continue; | |
5175 | } | |
5176 | else | |
5177 | { | |
5178 | /* Tiny GD->IE relaxation: | |
5179 | adr x0, :tlsgd:var => ldr x0, :gottprel:var | |
5180 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
5181 | nop => add x0, x0, x1 | |
5182 | */ | |
5183 | ||
5184 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
5185 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
5186 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5187 | ||
5188 | bfd_putl32 (0x58000000, contents + rel->r_offset); | |
5189 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); | |
5190 | bfd_putl32 (0x8b000020, contents + rel->r_offset + 8); | |
5191 | return bfd_reloc_continue; | |
5192 | } | |
5193 | ||
043bf05a MS |
5194 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
5195 | return bfd_reloc_continue; | |
5196 | ||
a6bb11b2 | 5197 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
a06ea964 NC |
5198 | if (is_local) |
5199 | { | |
5200 | /* GD->LE relaxation: | |
5201 | ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var | |
5202 | */ | |
5203 | bfd_putl32 (0xf2800000, contents + rel->r_offset); | |
5204 | return bfd_reloc_continue; | |
5205 | } | |
5206 | else | |
5207 | { | |
5208 | /* GD->IE relaxation: | |
5209 | ldr xd, [x0, #:tlsdesc_lo12:var] => ldr x0, [x0, #:gottprel_lo12:var] | |
5210 | */ | |
5211 | insn = bfd_getl32 (contents + rel->r_offset); | |
fa85fb9a | 5212 | insn &= 0xffffffe0; |
a06ea964 NC |
5213 | bfd_putl32 (insn, contents + rel->r_offset); |
5214 | return bfd_reloc_continue; | |
5215 | } | |
5216 | ||
a6bb11b2 | 5217 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a06ea964 NC |
5218 | if (is_local) |
5219 | { | |
5220 | /* GD->LE relaxation | |
5221 | add x0, #:tlsgd_lo12:var => movk x0, :tprel_g0_nc:var | |
5222 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
5223 | nop => add x0, x1, x0 | |
5224 | */ | |
5225 | ||
5226 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
5227 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
cec5225b | 5228 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 NC |
5229 | |
5230 | bfd_putl32 (0xf2800000, contents + rel->r_offset); | |
5231 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); | |
5232 | bfd_putl32 (0x8b000020, contents + rel->r_offset + 8); | |
5233 | return bfd_reloc_continue; | |
5234 | } | |
5235 | else | |
5236 | { | |
5237 | /* GD->IE relaxation | |
5238 | ADD x0, #:tlsgd_lo12:var => ldr x0, [x0, #:gottprel_lo12:var] | |
5239 | BL __tls_get_addr => mrs x1, tpidr_el0 | |
5240 | R_AARCH64_CALL26 | |
5241 | NOP => add x0, x1, x0 | |
5242 | */ | |
5243 | ||
a6bb11b2 | 5244 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); |
a06ea964 NC |
5245 | |
5246 | /* Remove the relocation on the BL instruction. */ | |
cec5225b | 5247 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 NC |
5248 | |
5249 | bfd_putl32 (0xf9400000, contents + rel->r_offset); | |
5250 | ||
5251 | /* We choose to fixup the BL and NOP instructions using the | |
5252 | offset from the second relocation to allow flexibility in | |
5253 | scheduling instructions between the ADD and BL. */ | |
5254 | bfd_putl32 (0xd53bd041, contents + rel[1].r_offset); | |
5255 | bfd_putl32 (0x8b000020, contents + rel[1].r_offset + 4); | |
5256 | return bfd_reloc_continue; | |
5257 | } | |
5258 | ||
a6bb11b2 YZ |
5259 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
5260 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
a06ea964 NC |
5261 | /* GD->IE/LE relaxation: |
5262 | add x0, x0, #:tlsdesc_lo12:var => nop | |
5263 | blr xd => nop | |
5264 | */ | |
5265 | bfd_putl32 (INSN_NOP, contents + rel->r_offset); | |
5266 | return bfd_reloc_ok; | |
5267 | ||
a6bb11b2 | 5268 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a06ea964 NC |
5269 | /* IE->LE relaxation: |
5270 | adrp xd, :gottprel:var => movz xd, :tprel_g1:var | |
5271 | */ | |
5272 | if (is_local) | |
5273 | { | |
5274 | insn = bfd_getl32 (contents + rel->r_offset); | |
5275 | bfd_putl32 (0xd2a00000 | (insn & 0x1f), contents + rel->r_offset); | |
5276 | } | |
5277 | return bfd_reloc_continue; | |
5278 | ||
a6bb11b2 | 5279 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: |
a06ea964 NC |
5280 | /* IE->LE relaxation: |
5281 | ldr xd, [xm, #:gottprel_lo12:var] => movk xd, :tprel_g0_nc:var | |
5282 | */ | |
5283 | if (is_local) | |
5284 | { | |
5285 | insn = bfd_getl32 (contents + rel->r_offset); | |
5286 | bfd_putl32 (0xf2800000 | (insn & 0x1f), contents + rel->r_offset); | |
5287 | } | |
5288 | return bfd_reloc_continue; | |
5289 | ||
5290 | default: | |
5291 | return bfd_reloc_continue; | |
5292 | } | |
5293 | ||
5294 | return bfd_reloc_ok; | |
5295 | } | |
5296 | ||
5297 | /* Relocate an AArch64 ELF section. */ | |
5298 | ||
5299 | static bfd_boolean | |
cec5225b | 5300 | elfNN_aarch64_relocate_section (bfd *output_bfd, |
a06ea964 NC |
5301 | struct bfd_link_info *info, |
5302 | bfd *input_bfd, | |
5303 | asection *input_section, | |
5304 | bfd_byte *contents, | |
5305 | Elf_Internal_Rela *relocs, | |
5306 | Elf_Internal_Sym *local_syms, | |
5307 | asection **local_sections) | |
5308 | { | |
5309 | Elf_Internal_Shdr *symtab_hdr; | |
5310 | struct elf_link_hash_entry **sym_hashes; | |
5311 | Elf_Internal_Rela *rel; | |
5312 | Elf_Internal_Rela *relend; | |
5313 | const char *name; | |
cec5225b | 5314 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 NC |
5315 | bfd_boolean save_addend = FALSE; |
5316 | bfd_vma addend = 0; | |
5317 | ||
cec5225b | 5318 | globals = elf_aarch64_hash_table (info); |
a06ea964 NC |
5319 | |
5320 | symtab_hdr = &elf_symtab_hdr (input_bfd); | |
5321 | sym_hashes = elf_sym_hashes (input_bfd); | |
5322 | ||
5323 | rel = relocs; | |
5324 | relend = relocs + input_section->reloc_count; | |
5325 | for (; rel < relend; rel++) | |
5326 | { | |
5327 | unsigned int r_type; | |
a6bb11b2 YZ |
5328 | bfd_reloc_code_real_type bfd_r_type; |
5329 | bfd_reloc_code_real_type relaxed_bfd_r_type; | |
a06ea964 NC |
5330 | reloc_howto_type *howto; |
5331 | unsigned long r_symndx; | |
5332 | Elf_Internal_Sym *sym; | |
5333 | asection *sec; | |
5334 | struct elf_link_hash_entry *h; | |
5335 | bfd_vma relocation; | |
5336 | bfd_reloc_status_type r; | |
5337 | arelent bfd_reloc; | |
5338 | char sym_type; | |
5339 | bfd_boolean unresolved_reloc = FALSE; | |
5340 | char *error_message = NULL; | |
5341 | ||
cec5225b YZ |
5342 | r_symndx = ELFNN_R_SYM (rel->r_info); |
5343 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 | 5344 | |
cec5225b | 5345 | bfd_reloc.howto = elfNN_aarch64_howto_from_type (r_type); |
a06ea964 NC |
5346 | howto = bfd_reloc.howto; |
5347 | ||
7fcfd62d NC |
5348 | if (howto == NULL) |
5349 | { | |
5350 | (*_bfd_error_handler) | |
5351 | (_("%B: unrecognized relocation (0x%x) in section `%A'"), | |
5352 | input_bfd, input_section, r_type); | |
5353 | return FALSE; | |
5354 | } | |
a6bb11b2 | 5355 | bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto); |
7fcfd62d | 5356 | |
a06ea964 NC |
5357 | h = NULL; |
5358 | sym = NULL; | |
5359 | sec = NULL; | |
5360 | ||
5361 | if (r_symndx < symtab_hdr->sh_info) | |
5362 | { | |
5363 | sym = local_syms + r_symndx; | |
cec5225b | 5364 | sym_type = ELFNN_ST_TYPE (sym->st_info); |
a06ea964 NC |
5365 | sec = local_sections[r_symndx]; |
5366 | ||
5367 | /* An object file might have a reference to a local | |
5368 | undefined symbol. This is a daft object file, but we | |
5369 | should at least do something about it. */ | |
5370 | if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL | |
5371 | && bfd_is_und_section (sec) | |
5372 | && ELF_ST_BIND (sym->st_info) != STB_WEAK) | |
5373 | { | |
5374 | if (!info->callbacks->undefined_symbol | |
5375 | (info, bfd_elf_string_from_elf_section | |
5376 | (input_bfd, symtab_hdr->sh_link, sym->st_name), | |
5377 | input_bfd, input_section, rel->r_offset, TRUE)) | |
5378 | return FALSE; | |
5379 | } | |
5380 | ||
a06ea964 | 5381 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
1419bbe5 WN |
5382 | |
5383 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
5384 | if (!info->relocatable | |
5385 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
5386 | { | |
5387 | h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd, | |
5388 | rel, FALSE); | |
5389 | if (h == NULL) | |
5390 | abort (); | |
5391 | ||
5392 | /* Set STT_GNU_IFUNC symbol value. */ | |
5393 | h->root.u.def.value = sym->st_value; | |
5394 | h->root.u.def.section = sec; | |
5395 | } | |
a06ea964 NC |
5396 | } |
5397 | else | |
5398 | { | |
62d887d4 | 5399 | bfd_boolean warned, ignored; |
a06ea964 NC |
5400 | |
5401 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
5402 | r_symndx, symtab_hdr, sym_hashes, | |
5403 | h, sec, relocation, | |
62d887d4 | 5404 | unresolved_reloc, warned, ignored); |
a06ea964 NC |
5405 | |
5406 | sym_type = h->type; | |
5407 | } | |
5408 | ||
5409 | if (sec != NULL && discarded_section (sec)) | |
5410 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
5411 | rel, 1, relend, howto, 0, contents); | |
5412 | ||
5413 | if (info->relocatable) | |
2e0488d3 | 5414 | continue; |
a06ea964 NC |
5415 | |
5416 | if (h != NULL) | |
5417 | name = h->root.root.string; | |
5418 | else | |
5419 | { | |
5420 | name = (bfd_elf_string_from_elf_section | |
5421 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
5422 | if (name == NULL || *name == '\0') | |
5423 | name = bfd_section_name (input_bfd, sec); | |
5424 | } | |
5425 | ||
5426 | if (r_symndx != 0 | |
5427 | && r_type != R_AARCH64_NONE | |
5428 | && r_type != R_AARCH64_NULL | |
5429 | && (h == NULL | |
5430 | || h->root.type == bfd_link_hash_defined | |
5431 | || h->root.type == bfd_link_hash_defweak) | |
a6bb11b2 | 5432 | && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS)) |
a06ea964 NC |
5433 | { |
5434 | (*_bfd_error_handler) | |
5435 | ((sym_type == STT_TLS | |
5436 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") | |
5437 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")), | |
5438 | input_bfd, | |
5439 | input_section, (long) rel->r_offset, howto->name, name); | |
5440 | } | |
5441 | ||
a06ea964 NC |
5442 | /* We relax only if we can see that there can be a valid transition |
5443 | from a reloc type to another. | |
cec5225b | 5444 | We call elfNN_aarch64_final_link_relocate unless we're completely |
a06ea964 NC |
5445 | done, i.e., the relaxation produced the final output we want. */ |
5446 | ||
a6bb11b2 YZ |
5447 | relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, |
5448 | h, r_symndx); | |
5449 | if (relaxed_bfd_r_type != bfd_r_type) | |
a06ea964 | 5450 | { |
a6bb11b2 YZ |
5451 | bfd_r_type = relaxed_bfd_r_type; |
5452 | howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type); | |
5453 | BFD_ASSERT (howto != NULL); | |
5454 | r_type = howto->type; | |
cec5225b | 5455 | r = elfNN_aarch64_tls_relax (globals, input_bfd, contents, rel, h); |
a06ea964 NC |
5456 | unresolved_reloc = 0; |
5457 | } | |
5458 | else | |
5459 | r = bfd_reloc_continue; | |
5460 | ||
5461 | /* There may be multiple consecutive relocations for the | |
5462 | same offset. In that case we are supposed to treat the | |
5463 | output of each relocation as the addend for the next. */ | |
5464 | if (rel + 1 < relend | |
5465 | && rel->r_offset == rel[1].r_offset | |
cec5225b YZ |
5466 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE |
5467 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL) | |
a06ea964 NC |
5468 | save_addend = TRUE; |
5469 | else | |
5470 | save_addend = FALSE; | |
5471 | ||
5472 | if (r == bfd_reloc_continue) | |
cec5225b | 5473 | r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd, |
a06ea964 NC |
5474 | input_section, contents, rel, |
5475 | relocation, info, sec, | |
5476 | h, &unresolved_reloc, | |
1419bbe5 | 5477 | save_addend, &addend, sym); |
a06ea964 | 5478 | |
a6bb11b2 | 5479 | switch (elfNN_aarch64_bfd_reloc_from_type (r_type)) |
a06ea964 | 5480 | { |
ce336788 | 5481 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 5482 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 5483 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a06ea964 NC |
5484 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
5485 | { | |
5486 | bfd_boolean need_relocs = FALSE; | |
5487 | bfd_byte *loc; | |
5488 | int indx; | |
5489 | bfd_vma off; | |
5490 | ||
5491 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
5492 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
5493 | ||
5494 | need_relocs = | |
5495 | (info->shared || indx != 0) && | |
5496 | (h == NULL | |
5497 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5498 | || h->root.type != bfd_link_hash_undefweak); | |
5499 | ||
5500 | BFD_ASSERT (globals->root.srelgot != NULL); | |
5501 | ||
5502 | if (need_relocs) | |
5503 | { | |
5504 | Elf_Internal_Rela rela; | |
a6bb11b2 | 5505 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD)); |
a06ea964 NC |
5506 | rela.r_addend = 0; |
5507 | rela.r_offset = globals->root.sgot->output_section->vma + | |
5508 | globals->root.sgot->output_offset + off; | |
5509 | ||
5510 | ||
5511 | loc = globals->root.srelgot->contents; | |
5512 | loc += globals->root.srelgot->reloc_count++ | |
5513 | * RELOC_SIZE (htab); | |
cec5225b | 5514 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
5515 | |
5516 | if (indx == 0) | |
5517 | { | |
cec5225b | 5518 | bfd_put_NN (output_bfd, |
a06ea964 NC |
5519 | relocation - dtpoff_base (info), |
5520 | globals->root.sgot->contents + off | |
5521 | + GOT_ENTRY_SIZE); | |
5522 | } | |
5523 | else | |
5524 | { | |
5525 | /* This TLS symbol is global. We emit a | |
5526 | relocation to fixup the tls offset at load | |
5527 | time. */ | |
5528 | rela.r_info = | |
a6bb11b2 | 5529 | ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL)); |
a06ea964 NC |
5530 | rela.r_addend = 0; |
5531 | rela.r_offset = | |
5532 | (globals->root.sgot->output_section->vma | |
5533 | + globals->root.sgot->output_offset + off | |
5534 | + GOT_ENTRY_SIZE); | |
5535 | ||
5536 | loc = globals->root.srelgot->contents; | |
5537 | loc += globals->root.srelgot->reloc_count++ | |
5538 | * RELOC_SIZE (globals); | |
cec5225b YZ |
5539 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
5540 | bfd_put_NN (output_bfd, (bfd_vma) 0, | |
a06ea964 NC |
5541 | globals->root.sgot->contents + off |
5542 | + GOT_ENTRY_SIZE); | |
5543 | } | |
5544 | } | |
5545 | else | |
5546 | { | |
cec5225b | 5547 | bfd_put_NN (output_bfd, (bfd_vma) 1, |
a06ea964 | 5548 | globals->root.sgot->contents + off); |
cec5225b | 5549 | bfd_put_NN (output_bfd, |
a06ea964 NC |
5550 | relocation - dtpoff_base (info), |
5551 | globals->root.sgot->contents + off | |
5552 | + GOT_ENTRY_SIZE); | |
5553 | } | |
5554 | ||
5555 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
5556 | } | |
5557 | break; | |
5558 | ||
a6bb11b2 YZ |
5559 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
5560 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
043bf05a | 5561 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
a06ea964 NC |
5562 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
5563 | { | |
5564 | bfd_boolean need_relocs = FALSE; | |
5565 | bfd_byte *loc; | |
5566 | int indx; | |
5567 | bfd_vma off; | |
5568 | ||
5569 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
5570 | ||
5571 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
5572 | ||
5573 | need_relocs = | |
5574 | (info->shared || indx != 0) && | |
5575 | (h == NULL | |
5576 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5577 | || h->root.type != bfd_link_hash_undefweak); | |
5578 | ||
5579 | BFD_ASSERT (globals->root.srelgot != NULL); | |
5580 | ||
5581 | if (need_relocs) | |
5582 | { | |
5583 | Elf_Internal_Rela rela; | |
5584 | ||
5585 | if (indx == 0) | |
5586 | rela.r_addend = relocation - dtpoff_base (info); | |
5587 | else | |
5588 | rela.r_addend = 0; | |
5589 | ||
a6bb11b2 | 5590 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL)); |
a06ea964 NC |
5591 | rela.r_offset = globals->root.sgot->output_section->vma + |
5592 | globals->root.sgot->output_offset + off; | |
5593 | ||
5594 | loc = globals->root.srelgot->contents; | |
5595 | loc += globals->root.srelgot->reloc_count++ | |
5596 | * RELOC_SIZE (htab); | |
5597 | ||
cec5225b | 5598 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 5599 | |
cec5225b | 5600 | bfd_put_NN (output_bfd, rela.r_addend, |
a06ea964 NC |
5601 | globals->root.sgot->contents + off); |
5602 | } | |
5603 | else | |
cec5225b | 5604 | bfd_put_NN (output_bfd, relocation - tpoff_base (info), |
a06ea964 NC |
5605 | globals->root.sgot->contents + off); |
5606 | ||
5607 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
5608 | } | |
5609 | break; | |
5610 | ||
a6bb11b2 | 5611 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
ce336788 | 5612 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: |
a6bb11b2 | 5613 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: |
a6bb11b2 YZ |
5614 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: |
5615 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
ce336788 JW |
5616 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: |
5617 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
5618 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
a06ea964 NC |
5619 | break; |
5620 | ||
7bcccb57 | 5621 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
a6bb11b2 | 5622 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 5623 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 5624 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
1ada945d | 5625 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
5626 | if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx)) |
5627 | { | |
5628 | bfd_boolean need_relocs = FALSE; | |
5629 | int indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
5630 | bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx); | |
5631 | ||
5632 | need_relocs = (h == NULL | |
5633 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5634 | || h->root.type != bfd_link_hash_undefweak); | |
5635 | ||
5636 | BFD_ASSERT (globals->root.srelgot != NULL); | |
5637 | BFD_ASSERT (globals->root.sgot != NULL); | |
5638 | ||
5639 | if (need_relocs) | |
5640 | { | |
5641 | bfd_byte *loc; | |
5642 | Elf_Internal_Rela rela; | |
a6bb11b2 YZ |
5643 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC)); |
5644 | ||
a06ea964 NC |
5645 | rela.r_addend = 0; |
5646 | rela.r_offset = (globals->root.sgotplt->output_section->vma | |
5647 | + globals->root.sgotplt->output_offset | |
5648 | + off + globals->sgotplt_jump_table_size); | |
5649 | ||
5650 | if (indx == 0) | |
5651 | rela.r_addend = relocation - dtpoff_base (info); | |
5652 | ||
5653 | /* Allocate the next available slot in the PLT reloc | |
5654 | section to hold our R_AARCH64_TLSDESC, the next | |
5655 | available slot is determined from reloc_count, | |
5656 | which we step. But note, reloc_count was | |
5657 | artifically moved down while allocating slots for | |
5658 | real PLT relocs such that all of the PLT relocs | |
5659 | will fit above the initial reloc_count and the | |
5660 | extra stuff will fit below. */ | |
5661 | loc = globals->root.srelplt->contents; | |
5662 | loc += globals->root.srelplt->reloc_count++ | |
5663 | * RELOC_SIZE (globals); | |
5664 | ||
cec5225b | 5665 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 5666 | |
cec5225b | 5667 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
5668 | globals->root.sgotplt->contents + off + |
5669 | globals->sgotplt_jump_table_size); | |
cec5225b | 5670 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
5671 | globals->root.sgotplt->contents + off + |
5672 | globals->sgotplt_jump_table_size + | |
5673 | GOT_ENTRY_SIZE); | |
5674 | } | |
5675 | ||
5676 | symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx); | |
5677 | } | |
5678 | break; | |
a6bb11b2 YZ |
5679 | default: |
5680 | break; | |
a06ea964 NC |
5681 | } |
5682 | ||
5683 | if (!save_addend) | |
5684 | addend = 0; | |
5685 | ||
5686 | ||
5687 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections | |
5688 | because such sections are not SEC_ALLOC and thus ld.so will | |
5689 | not process them. */ | |
5690 | if (unresolved_reloc | |
5691 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
5692 | && h->def_dynamic) | |
5693 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
5694 | +rel->r_offset) != (bfd_vma) - 1) | |
5695 | { | |
5696 | (*_bfd_error_handler) | |
5697 | (_ | |
5698 | ("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), | |
5699 | input_bfd, input_section, (long) rel->r_offset, howto->name, | |
5700 | h->root.root.string); | |
5701 | return FALSE; | |
5702 | } | |
5703 | ||
5704 | if (r != bfd_reloc_ok && r != bfd_reloc_continue) | |
5705 | { | |
5706 | switch (r) | |
5707 | { | |
5708 | case bfd_reloc_overflow: | |
fdc3b1b1 JW |
5709 | if (!(*info->callbacks->reloc_overflow) |
5710 | (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, | |
5711 | input_bfd, input_section, rel->r_offset)) | |
a06ea964 NC |
5712 | return FALSE; |
5713 | break; | |
5714 | ||
5715 | case bfd_reloc_undefined: | |
5716 | if (!((*info->callbacks->undefined_symbol) | |
5717 | (info, name, input_bfd, input_section, | |
5718 | rel->r_offset, TRUE))) | |
5719 | return FALSE; | |
5720 | break; | |
5721 | ||
5722 | case bfd_reloc_outofrange: | |
5723 | error_message = _("out of range"); | |
5724 | goto common_error; | |
5725 | ||
5726 | case bfd_reloc_notsupported: | |
5727 | error_message = _("unsupported relocation"); | |
5728 | goto common_error; | |
5729 | ||
5730 | case bfd_reloc_dangerous: | |
5731 | /* error_message should already be set. */ | |
5732 | goto common_error; | |
5733 | ||
5734 | default: | |
5735 | error_message = _("unknown error"); | |
5736 | /* Fall through. */ | |
5737 | ||
5738 | common_error: | |
5739 | BFD_ASSERT (error_message != NULL); | |
5740 | if (!((*info->callbacks->reloc_dangerous) | |
5741 | (info, error_message, input_bfd, input_section, | |
5742 | rel->r_offset))) | |
5743 | return FALSE; | |
5744 | break; | |
5745 | } | |
5746 | } | |
5747 | } | |
5748 | ||
5749 | return TRUE; | |
5750 | } | |
5751 | ||
5752 | /* Set the right machine number. */ | |
5753 | ||
5754 | static bfd_boolean | |
cec5225b | 5755 | elfNN_aarch64_object_p (bfd *abfd) |
a06ea964 | 5756 | { |
cec5225b YZ |
5757 | #if ARCH_SIZE == 32 |
5758 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32); | |
5759 | #else | |
a06ea964 | 5760 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64); |
cec5225b | 5761 | #endif |
a06ea964 NC |
5762 | return TRUE; |
5763 | } | |
5764 | ||
5765 | /* Function to keep AArch64 specific flags in the ELF header. */ | |
5766 | ||
5767 | static bfd_boolean | |
cec5225b | 5768 | elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags) |
a06ea964 NC |
5769 | { |
5770 | if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags) | |
5771 | { | |
5772 | } | |
5773 | else | |
5774 | { | |
5775 | elf_elfheader (abfd)->e_flags = flags; | |
5776 | elf_flags_init (abfd) = TRUE; | |
5777 | } | |
5778 | ||
5779 | return TRUE; | |
5780 | } | |
5781 | ||
a06ea964 NC |
5782 | /* Merge backend specific data from an object file to the output |
5783 | object file when linking. */ | |
5784 | ||
5785 | static bfd_boolean | |
cec5225b | 5786 | elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
a06ea964 NC |
5787 | { |
5788 | flagword out_flags; | |
5789 | flagword in_flags; | |
5790 | bfd_boolean flags_compatible = TRUE; | |
5791 | asection *sec; | |
5792 | ||
5793 | /* Check if we have the same endianess. */ | |
5794 | if (!_bfd_generic_verify_endian_match (ibfd, obfd)) | |
5795 | return FALSE; | |
5796 | ||
5797 | if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd)) | |
5798 | return TRUE; | |
5799 | ||
5800 | /* The input BFD must have had its flags initialised. */ | |
5801 | /* The following seems bogus to me -- The flags are initialized in | |
5802 | the assembler but I don't think an elf_flags_init field is | |
5803 | written into the object. */ | |
5804 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ | |
5805 | ||
5806 | in_flags = elf_elfheader (ibfd)->e_flags; | |
5807 | out_flags = elf_elfheader (obfd)->e_flags; | |
5808 | ||
5809 | if (!elf_flags_init (obfd)) | |
5810 | { | |
5811 | /* If the input is the default architecture and had the default | |
5812 | flags then do not bother setting the flags for the output | |
5813 | architecture, instead allow future merges to do this. If no | |
5814 | future merges ever set these flags then they will retain their | |
5815 | uninitialised values, which surprise surprise, correspond | |
5816 | to the default values. */ | |
5817 | if (bfd_get_arch_info (ibfd)->the_default | |
5818 | && elf_elfheader (ibfd)->e_flags == 0) | |
5819 | return TRUE; | |
5820 | ||
5821 | elf_flags_init (obfd) = TRUE; | |
5822 | elf_elfheader (obfd)->e_flags = in_flags; | |
5823 | ||
5824 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
5825 | && bfd_get_arch_info (obfd)->the_default) | |
5826 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
5827 | bfd_get_mach (ibfd)); | |
5828 | ||
5829 | return TRUE; | |
5830 | } | |
5831 | ||
5832 | /* Identical flags must be compatible. */ | |
5833 | if (in_flags == out_flags) | |
5834 | return TRUE; | |
5835 | ||
5836 | /* Check to see if the input BFD actually contains any sections. If | |
5837 | not, its flags may not have been initialised either, but it | |
5838 | cannot actually cause any incompatiblity. Do not short-circuit | |
5839 | dynamic objects; their section list may be emptied by | |
5840 | elf_link_add_object_symbols. | |
5841 | ||
5842 | Also check to see if there are no code sections in the input. | |
5843 | In this case there is no need to check for code specific flags. | |
5844 | XXX - do we need to worry about floating-point format compatability | |
5845 | in data sections ? */ | |
5846 | if (!(ibfd->flags & DYNAMIC)) | |
5847 | { | |
5848 | bfd_boolean null_input_bfd = TRUE; | |
5849 | bfd_boolean only_data_sections = TRUE; | |
5850 | ||
5851 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
5852 | { | |
5853 | if ((bfd_get_section_flags (ibfd, sec) | |
5854 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
5855 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
5856 | only_data_sections = FALSE; | |
5857 | ||
5858 | null_input_bfd = FALSE; | |
5859 | break; | |
5860 | } | |
5861 | ||
5862 | if (null_input_bfd || only_data_sections) | |
5863 | return TRUE; | |
5864 | } | |
5865 | ||
5866 | return flags_compatible; | |
5867 | } | |
5868 | ||
5869 | /* Display the flags field. */ | |
5870 | ||
5871 | static bfd_boolean | |
cec5225b | 5872 | elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr) |
a06ea964 NC |
5873 | { |
5874 | FILE *file = (FILE *) ptr; | |
5875 | unsigned long flags; | |
5876 | ||
5877 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
5878 | ||
5879 | /* Print normal ELF private data. */ | |
5880 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
5881 | ||
5882 | flags = elf_elfheader (abfd)->e_flags; | |
5883 | /* Ignore init flag - it may not be set, despite the flags field | |
5884 | containing valid data. */ | |
5885 | ||
5886 | /* xgettext:c-format */ | |
5887 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
5888 | ||
5889 | if (flags) | |
5890 | fprintf (file, _("<Unrecognised flag bits set>")); | |
5891 | ||
5892 | fputc ('\n', file); | |
5893 | ||
5894 | return TRUE; | |
5895 | } | |
5896 | ||
5897 | /* Update the got entry reference counts for the section being removed. */ | |
5898 | ||
5899 | static bfd_boolean | |
cec5225b | 5900 | elfNN_aarch64_gc_sweep_hook (bfd *abfd, |
cb8af559 NC |
5901 | struct bfd_link_info *info, |
5902 | asection *sec, | |
5903 | const Elf_Internal_Rela * relocs) | |
a06ea964 | 5904 | { |
cec5225b | 5905 | struct elf_aarch64_link_hash_table *htab; |
59c108f7 NC |
5906 | Elf_Internal_Shdr *symtab_hdr; |
5907 | struct elf_link_hash_entry **sym_hashes; | |
cb8af559 | 5908 | struct elf_aarch64_local_symbol *locals; |
59c108f7 NC |
5909 | const Elf_Internal_Rela *rel, *relend; |
5910 | ||
5911 | if (info->relocatable) | |
5912 | return TRUE; | |
5913 | ||
cec5225b | 5914 | htab = elf_aarch64_hash_table (info); |
59c108f7 NC |
5915 | |
5916 | if (htab == NULL) | |
5917 | return FALSE; | |
5918 | ||
5919 | elf_section_data (sec)->local_dynrel = NULL; | |
5920 | ||
5921 | symtab_hdr = &elf_symtab_hdr (abfd); | |
5922 | sym_hashes = elf_sym_hashes (abfd); | |
5923 | ||
cec5225b | 5924 | locals = elf_aarch64_locals (abfd); |
59c108f7 NC |
5925 | |
5926 | relend = relocs + sec->reloc_count; | |
5927 | for (rel = relocs; rel < relend; rel++) | |
5928 | { | |
5929 | unsigned long r_symndx; | |
5930 | unsigned int r_type; | |
5931 | struct elf_link_hash_entry *h = NULL; | |
5932 | ||
cec5225b | 5933 | r_symndx = ELFNN_R_SYM (rel->r_info); |
8847944f | 5934 | |
59c108f7 NC |
5935 | if (r_symndx >= symtab_hdr->sh_info) |
5936 | { | |
8847944f | 5937 | |
59c108f7 NC |
5938 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
5939 | while (h->root.type == bfd_link_hash_indirect | |
5940 | || h->root.type == bfd_link_hash_warning) | |
5941 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
59c108f7 NC |
5942 | } |
5943 | else | |
5944 | { | |
5945 | Elf_Internal_Sym *isym; | |
5946 | ||
8847944f | 5947 | /* A local symbol. */ |
59c108f7 NC |
5948 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5949 | abfd, r_symndx); | |
1419bbe5 WN |
5950 | |
5951 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
5952 | if (isym != NULL | |
5953 | && ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
5954 | { | |
5955 | h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, FALSE); | |
5956 | if (h == NULL) | |
5957 | abort (); | |
5958 | } | |
5959 | } | |
5960 | ||
5961 | if (h) | |
5962 | { | |
5963 | struct elf_aarch64_link_hash_entry *eh; | |
5964 | struct elf_dyn_relocs **pp; | |
5965 | struct elf_dyn_relocs *p; | |
5966 | ||
5967 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
5968 | ||
5969 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
5970 | if (p->sec == sec) | |
5971 | { | |
5972 | /* Everything must go for SEC. */ | |
5973 | *pp = p->next; | |
5974 | break; | |
5975 | } | |
59c108f7 NC |
5976 | } |
5977 | ||
cec5225b | 5978 | r_type = ELFNN_R_TYPE (rel->r_info); |
a6bb11b2 | 5979 | switch (aarch64_tls_transition (abfd,info, r_type, h ,r_symndx)) |
59c108f7 | 5980 | { |
a6bb11b2 | 5981 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
7bcccb57 | 5982 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
7018c030 | 5983 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
7bcccb57 | 5984 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 5985 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
7bcccb57 MS |
5986 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
5987 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: | |
5988 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
389b8029 | 5989 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
7bcccb57 MS |
5990 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
5991 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: | |
1ada945d | 5992 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a6bb11b2 | 5993 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
7bcccb57 | 5994 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 5995 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 5996 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 5997 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
7bcccb57 | 5998 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 5999 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
a6bb11b2 | 6000 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
7bcccb57 | 6001 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: |
a6bb11b2 | 6002 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: |
a6bb11b2 YZ |
6003 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: |
6004 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
7bcccb57 MS |
6005 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: |
6006 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
6007 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
a6bb11b2 | 6008 | if (h != NULL) |
59c108f7 NC |
6009 | { |
6010 | if (h->got.refcount > 0) | |
6011 | h->got.refcount -= 1; | |
1419bbe5 WN |
6012 | |
6013 | if (h->type == STT_GNU_IFUNC) | |
6014 | { | |
6015 | if (h->plt.refcount > 0) | |
6016 | h->plt.refcount -= 1; | |
6017 | } | |
59c108f7 | 6018 | } |
cb8af559 | 6019 | else if (locals != NULL) |
59c108f7 | 6020 | { |
cb8af559 NC |
6021 | if (locals[r_symndx].got_refcount > 0) |
6022 | locals[r_symndx].got_refcount -= 1; | |
59c108f7 NC |
6023 | } |
6024 | break; | |
6025 | ||
a6bb11b2 YZ |
6026 | case BFD_RELOC_AARCH64_CALL26: |
6027 | case BFD_RELOC_AARCH64_JUMP26: | |
6028 | /* If this is a local symbol then we resolve it | |
6029 | directly without creating a PLT entry. */ | |
59c108f7 NC |
6030 | if (h == NULL) |
6031 | continue; | |
6032 | ||
6033 | if (h->plt.refcount > 0) | |
6034 | h->plt.refcount -= 1; | |
6035 | break; | |
6036 | ||
ce336788 JW |
6037 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
6038 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
6039 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
614b09ce JW |
6040 | case BFD_RELOC_AARCH64_MOVW_G0_NC: |
6041 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
6042 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
6043 | case BFD_RELOC_AARCH64_MOVW_G3: | |
a6bb11b2 | 6044 | case BFD_RELOC_AARCH64_NN: |
8847944f | 6045 | if (h != NULL && info->executable) |
59c108f7 NC |
6046 | { |
6047 | if (h->plt.refcount > 0) | |
6048 | h->plt.refcount -= 1; | |
6049 | } | |
6050 | break; | |
cec5225b | 6051 | |
59c108f7 NC |
6052 | default: |
6053 | break; | |
6054 | } | |
6055 | } | |
6056 | ||
a06ea964 NC |
6057 | return TRUE; |
6058 | } | |
6059 | ||
6060 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
6061 | regular object. The current definition is in some section of the | |
6062 | dynamic object, but we're not including those sections. We have to | |
6063 | change the definition to something the rest of the link can | |
6064 | understand. */ | |
6065 | ||
6066 | static bfd_boolean | |
cec5225b | 6067 | elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info, |
a06ea964 NC |
6068 | struct elf_link_hash_entry *h) |
6069 | { | |
cec5225b | 6070 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
6071 | asection *s; |
6072 | ||
6073 | /* If this is a function, put it in the procedure linkage table. We | |
6074 | will fill in the contents of the procedure linkage table later, | |
6075 | when we know the address of the .got section. */ | |
1419bbe5 | 6076 | if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt) |
a06ea964 NC |
6077 | { |
6078 | if (h->plt.refcount <= 0 | |
1419bbe5 WN |
6079 | || (h->type != STT_GNU_IFUNC |
6080 | && (SYMBOL_CALLS_LOCAL (info, h) | |
6081 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
6082 | && h->root.type == bfd_link_hash_undefweak)))) | |
a06ea964 NC |
6083 | { |
6084 | /* This case can occur if we saw a CALL26 reloc in | |
6085 | an input file, but the symbol wasn't referred to | |
6086 | by a dynamic object or all references were | |
6087 | garbage collected. In which case we can end up | |
6088 | resolving. */ | |
6089 | h->plt.offset = (bfd_vma) - 1; | |
6090 | h->needs_plt = 0; | |
6091 | } | |
6092 | ||
6093 | return TRUE; | |
6094 | } | |
6095 | else | |
80de0c6d | 6096 | /* Otherwise, reset to -1. */ |
a06ea964 NC |
6097 | h->plt.offset = (bfd_vma) - 1; |
6098 | ||
6099 | ||
6100 | /* If this is a weak symbol, and there is a real definition, the | |
6101 | processor independent code will have arranged for us to see the | |
6102 | real definition first, and we can just use the same value. */ | |
6103 | if (h->u.weakdef != NULL) | |
6104 | { | |
6105 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
6106 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
6107 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
6108 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
6109 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) | |
6110 | h->non_got_ref = h->u.weakdef->non_got_ref; | |
6111 | return TRUE; | |
6112 | } | |
6113 | ||
6114 | /* If we are creating a shared library, we must presume that the | |
6115 | only references to the symbol are via the global offset table. | |
6116 | For such cases we need not do anything here; the relocations will | |
6117 | be handled correctly by relocate_section. */ | |
6118 | if (info->shared) | |
6119 | return TRUE; | |
6120 | ||
6121 | /* If there are no references to this symbol that do not use the | |
6122 | GOT, we don't need to generate a copy reloc. */ | |
6123 | if (!h->non_got_ref) | |
6124 | return TRUE; | |
6125 | ||
6126 | /* If -z nocopyreloc was given, we won't generate them either. */ | |
6127 | if (info->nocopyreloc) | |
6128 | { | |
6129 | h->non_got_ref = 0; | |
6130 | return TRUE; | |
6131 | } | |
6132 | ||
6133 | /* We must allocate the symbol in our .dynbss section, which will | |
6134 | become part of the .bss section of the executable. There will be | |
6135 | an entry for this symbol in the .dynsym section. The dynamic | |
6136 | object will contain position independent code, so all references | |
6137 | from the dynamic object to this symbol will go through the global | |
6138 | offset table. The dynamic linker will use the .dynsym entry to | |
6139 | determine the address it must put in the global offset table, so | |
6140 | both the dynamic object and the regular object will refer to the | |
6141 | same memory location for the variable. */ | |
6142 | ||
cec5225b | 6143 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
6144 | |
6145 | /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker | |
6146 | to copy the initial value out of the dynamic object and into the | |
6147 | runtime process image. */ | |
6148 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) | |
6149 | { | |
6150 | htab->srelbss->size += RELOC_SIZE (htab); | |
6151 | h->needs_copy = 1; | |
6152 | } | |
6153 | ||
6154 | s = htab->sdynbss; | |
6155 | ||
6cabe1ea | 6156 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
a06ea964 NC |
6157 | |
6158 | } | |
6159 | ||
6160 | static bfd_boolean | |
cec5225b | 6161 | elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number) |
a06ea964 NC |
6162 | { |
6163 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 6164 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
6165 | if (locals == NULL) |
6166 | { | |
6167 | locals = (struct elf_aarch64_local_symbol *) | |
6168 | bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol)); | |
6169 | if (locals == NULL) | |
6170 | return FALSE; | |
cec5225b | 6171 | elf_aarch64_locals (abfd) = locals; |
a06ea964 NC |
6172 | } |
6173 | return TRUE; | |
6174 | } | |
6175 | ||
cc0efaa8 MS |
6176 | /* Create the .got section to hold the global offset table. */ |
6177 | ||
6178 | static bfd_boolean | |
6179 | aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) | |
6180 | { | |
6181 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
6182 | flagword flags; | |
6183 | asection *s; | |
6184 | struct elf_link_hash_entry *h; | |
6185 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
6186 | ||
6187 | /* This function may be called more than once. */ | |
6188 | s = bfd_get_linker_section (abfd, ".got"); | |
6189 | if (s != NULL) | |
6190 | return TRUE; | |
6191 | ||
6192 | flags = bed->dynamic_sec_flags; | |
6193 | ||
6194 | s = bfd_make_section_anyway_with_flags (abfd, | |
6195 | (bed->rela_plts_and_copies_p | |
6196 | ? ".rela.got" : ".rel.got"), | |
6197 | (bed->dynamic_sec_flags | |
6198 | | SEC_READONLY)); | |
6199 | if (s == NULL | |
6200 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
6201 | return FALSE; | |
6202 | htab->srelgot = s; | |
6203 | ||
6204 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); | |
6205 | if (s == NULL | |
6206 | || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
6207 | return FALSE; | |
6208 | htab->sgot = s; | |
6209 | htab->sgot->size += GOT_ENTRY_SIZE; | |
6210 | ||
6211 | if (bed->want_got_sym) | |
6212 | { | |
6213 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
6214 | (or .got.plt) section. We don't do this in the linker script | |
6215 | because we don't want to define the symbol if we are not creating | |
6216 | a global offset table. */ | |
6217 | h = _bfd_elf_define_linkage_sym (abfd, info, s, | |
6218 | "_GLOBAL_OFFSET_TABLE_"); | |
6219 | elf_hash_table (info)->hgot = h; | |
6220 | if (h == NULL) | |
6221 | return FALSE; | |
6222 | } | |
6223 | ||
6224 | if (bed->want_got_plt) | |
6225 | { | |
6226 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); | |
6227 | if (s == NULL | |
6228 | || !bfd_set_section_alignment (abfd, s, | |
6229 | bed->s->log_file_align)) | |
6230 | return FALSE; | |
6231 | htab->sgotplt = s; | |
6232 | } | |
6233 | ||
6234 | /* The first bit of the global offset table is the header. */ | |
6235 | s->size += bed->got_header_size; | |
6236 | ||
6237 | return TRUE; | |
6238 | } | |
6239 | ||
a06ea964 NC |
6240 | /* Look through the relocs for a section during the first phase. */ |
6241 | ||
6242 | static bfd_boolean | |
cec5225b | 6243 | elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
a06ea964 NC |
6244 | asection *sec, const Elf_Internal_Rela *relocs) |
6245 | { | |
6246 | Elf_Internal_Shdr *symtab_hdr; | |
6247 | struct elf_link_hash_entry **sym_hashes; | |
6248 | const Elf_Internal_Rela *rel; | |
6249 | const Elf_Internal_Rela *rel_end; | |
6250 | asection *sreloc; | |
6251 | ||
cec5225b | 6252 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 6253 | |
a06ea964 NC |
6254 | if (info->relocatable) |
6255 | return TRUE; | |
6256 | ||
6257 | BFD_ASSERT (is_aarch64_elf (abfd)); | |
6258 | ||
cec5225b | 6259 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
6260 | sreloc = NULL; |
6261 | ||
6262 | symtab_hdr = &elf_symtab_hdr (abfd); | |
6263 | sym_hashes = elf_sym_hashes (abfd); | |
a06ea964 NC |
6264 | |
6265 | rel_end = relocs + sec->reloc_count; | |
6266 | for (rel = relocs; rel < rel_end; rel++) | |
6267 | { | |
6268 | struct elf_link_hash_entry *h; | |
6269 | unsigned long r_symndx; | |
6270 | unsigned int r_type; | |
a6bb11b2 | 6271 | bfd_reloc_code_real_type bfd_r_type; |
1419bbe5 | 6272 | Elf_Internal_Sym *isym; |
a06ea964 | 6273 | |
cec5225b YZ |
6274 | r_symndx = ELFNN_R_SYM (rel->r_info); |
6275 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 NC |
6276 | |
6277 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
6278 | { | |
6279 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd, | |
6280 | r_symndx); | |
6281 | return FALSE; | |
6282 | } | |
6283 | ||
ed5acf27 | 6284 | if (r_symndx < symtab_hdr->sh_info) |
1419bbe5 WN |
6285 | { |
6286 | /* A local symbol. */ | |
6287 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
6288 | abfd, r_symndx); | |
6289 | if (isym == NULL) | |
6290 | return FALSE; | |
6291 | ||
6292 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
6293 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
6294 | { | |
6295 | h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, | |
6296 | TRUE); | |
6297 | if (h == NULL) | |
6298 | return FALSE; | |
6299 | ||
6300 | /* Fake a STT_GNU_IFUNC symbol. */ | |
6301 | h->type = STT_GNU_IFUNC; | |
6302 | h->def_regular = 1; | |
6303 | h->ref_regular = 1; | |
6304 | h->forced_local = 1; | |
6305 | h->root.type = bfd_link_hash_defined; | |
6306 | } | |
6307 | else | |
6308 | h = NULL; | |
6309 | } | |
a06ea964 NC |
6310 | else |
6311 | { | |
6312 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
6313 | while (h->root.type == bfd_link_hash_indirect | |
6314 | || h->root.type == bfd_link_hash_warning) | |
6315 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 AM |
6316 | |
6317 | /* PR15323, ref flags aren't set for references in the same | |
6318 | object. */ | |
6319 | h->root.non_ir_ref = 1; | |
a06ea964 NC |
6320 | } |
6321 | ||
6322 | /* Could be done earlier, if h were already available. */ | |
a6bb11b2 | 6323 | bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx); |
a06ea964 | 6324 | |
1419bbe5 WN |
6325 | if (h != NULL) |
6326 | { | |
6327 | /* Create the ifunc sections for static executables. If we | |
6328 | never see an indirect function symbol nor we are building | |
6329 | a static executable, those sections will be empty and | |
6330 | won't appear in output. */ | |
6331 | switch (bfd_r_type) | |
6332 | { | |
6333 | default: | |
6334 | break; | |
6335 | ||
ce336788 JW |
6336 | case BFD_RELOC_AARCH64_ADD_LO12: |
6337 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: | |
6338 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
1419bbe5 | 6339 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 6340 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
1419bbe5 | 6341 | case BFD_RELOC_AARCH64_JUMP26: |
7018c030 | 6342 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
1419bbe5 | 6343 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 6344 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
1419bbe5 | 6345 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
ce336788 | 6346 | case BFD_RELOC_AARCH64_NN: |
1419bbe5 WN |
6347 | if (htab->root.dynobj == NULL) |
6348 | htab->root.dynobj = abfd; | |
6349 | if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info)) | |
6350 | return FALSE; | |
6351 | break; | |
6352 | } | |
6353 | ||
6354 | /* It is referenced by a non-shared object. */ | |
6355 | h->ref_regular = 1; | |
6356 | h->root.non_ir_ref = 1; | |
6357 | } | |
6358 | ||
a6bb11b2 | 6359 | switch (bfd_r_type) |
a06ea964 | 6360 | { |
a6bb11b2 | 6361 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
6362 | |
6363 | /* We don't need to handle relocs into sections not going into | |
6364 | the "real" output. */ | |
6365 | if ((sec->flags & SEC_ALLOC) == 0) | |
6366 | break; | |
6367 | ||
6368 | if (h != NULL) | |
6369 | { | |
6370 | if (!info->shared) | |
6371 | h->non_got_ref = 1; | |
6372 | ||
6373 | h->plt.refcount += 1; | |
6374 | h->pointer_equality_needed = 1; | |
6375 | } | |
6376 | ||
6377 | /* No need to do anything if we're not creating a shared | |
6378 | object. */ | |
6379 | if (! info->shared) | |
6380 | break; | |
6381 | ||
6382 | { | |
6383 | struct elf_dyn_relocs *p; | |
6384 | struct elf_dyn_relocs **head; | |
6385 | ||
6386 | /* We must copy these reloc types into the output file. | |
6387 | Create a reloc section in dynobj and make room for | |
6388 | this reloc. */ | |
6389 | if (sreloc == NULL) | |
6390 | { | |
6391 | if (htab->root.dynobj == NULL) | |
6392 | htab->root.dynobj = abfd; | |
6393 | ||
6394 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
0608afa7 | 6395 | (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE); |
a06ea964 NC |
6396 | |
6397 | if (sreloc == NULL) | |
6398 | return FALSE; | |
6399 | } | |
6400 | ||
6401 | /* If this is a global symbol, we count the number of | |
6402 | relocations we need for this symbol. */ | |
6403 | if (h != NULL) | |
6404 | { | |
cec5225b YZ |
6405 | struct elf_aarch64_link_hash_entry *eh; |
6406 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
6407 | head = &eh->dyn_relocs; |
6408 | } | |
6409 | else | |
6410 | { | |
6411 | /* Track dynamic relocs needed for local syms too. | |
6412 | We really need local syms available to do this | |
6413 | easily. Oh well. */ | |
6414 | ||
6415 | asection *s; | |
6416 | void **vpp; | |
a06ea964 NC |
6417 | |
6418 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
6419 | abfd, r_symndx); | |
6420 | if (isym == NULL) | |
6421 | return FALSE; | |
6422 | ||
6423 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
6424 | if (s == NULL) | |
6425 | s = sec; | |
6426 | ||
6427 | /* Beware of type punned pointers vs strict aliasing | |
6428 | rules. */ | |
6429 | vpp = &(elf_section_data (s)->local_dynrel); | |
6430 | head = (struct elf_dyn_relocs **) vpp; | |
6431 | } | |
6432 | ||
6433 | p = *head; | |
6434 | if (p == NULL || p->sec != sec) | |
6435 | { | |
6436 | bfd_size_type amt = sizeof *p; | |
6437 | p = ((struct elf_dyn_relocs *) | |
6438 | bfd_zalloc (htab->root.dynobj, amt)); | |
6439 | if (p == NULL) | |
6440 | return FALSE; | |
6441 | p->next = *head; | |
6442 | *head = p; | |
6443 | p->sec = sec; | |
6444 | } | |
6445 | ||
6446 | p->count += 1; | |
6447 | ||
6448 | } | |
6449 | break; | |
6450 | ||
6451 | /* RR: We probably want to keep a consistency check that | |
6452 | there are no dangling GOT_PAGE relocs. */ | |
a6bb11b2 | 6453 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
7bcccb57 | 6454 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
7018c030 | 6455 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
7bcccb57 | 6456 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 6457 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
7bcccb57 MS |
6458 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
6459 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: | |
6460 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
389b8029 | 6461 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
7bcccb57 MS |
6462 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
6463 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: | |
1ada945d | 6464 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a6bb11b2 | 6465 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
7bcccb57 | 6466 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 6467 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 6468 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 6469 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
7bcccb57 | 6470 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 6471 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
a6bb11b2 | 6472 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
7bcccb57 | 6473 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: |
a6bb11b2 | 6474 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: |
a6bb11b2 YZ |
6475 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: |
6476 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
7bcccb57 MS |
6477 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: |
6478 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
6479 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
a06ea964 NC |
6480 | { |
6481 | unsigned got_type; | |
6482 | unsigned old_got_type; | |
6483 | ||
a6bb11b2 | 6484 | got_type = aarch64_reloc_got_type (bfd_r_type); |
a06ea964 NC |
6485 | |
6486 | if (h) | |
6487 | { | |
6488 | h->got.refcount += 1; | |
cec5225b | 6489 | old_got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
6490 | } |
6491 | else | |
6492 | { | |
6493 | struct elf_aarch64_local_symbol *locals; | |
6494 | ||
cec5225b | 6495 | if (!elfNN_aarch64_allocate_local_symbols |
a06ea964 NC |
6496 | (abfd, symtab_hdr->sh_info)) |
6497 | return FALSE; | |
6498 | ||
cec5225b | 6499 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
6500 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
6501 | locals[r_symndx].got_refcount += 1; | |
6502 | old_got_type = locals[r_symndx].got_type; | |
6503 | } | |
6504 | ||
6505 | /* If a variable is accessed with both general dynamic TLS | |
6506 | methods, two slots may be created. */ | |
6507 | if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type)) | |
6508 | got_type |= old_got_type; | |
6509 | ||
6510 | /* We will already have issued an error message if there | |
6511 | is a TLS/non-TLS mismatch, based on the symbol type. | |
6512 | So just combine any TLS types needed. */ | |
6513 | if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL | |
6514 | && got_type != GOT_NORMAL) | |
6515 | got_type |= old_got_type; | |
6516 | ||
6517 | /* If the symbol is accessed by both IE and GD methods, we | |
6518 | are able to relax. Turn off the GD flag, without | |
6519 | messing up with any other kind of TLS types that may be | |
6520 | involved. */ | |
6521 | if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type)) | |
6522 | got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD); | |
6523 | ||
6524 | if (old_got_type != got_type) | |
6525 | { | |
6526 | if (h != NULL) | |
cec5225b | 6527 | elf_aarch64_hash_entry (h)->got_type = got_type; |
a06ea964 NC |
6528 | else |
6529 | { | |
6530 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 6531 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
6532 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
6533 | locals[r_symndx].got_type = got_type; | |
6534 | } | |
6535 | } | |
6536 | ||
cc0efaa8 MS |
6537 | if (htab->root.dynobj == NULL) |
6538 | htab->root.dynobj = abfd; | |
6539 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
6540 | return FALSE; | |
a06ea964 NC |
6541 | break; |
6542 | } | |
6543 | ||
614b09ce JW |
6544 | case BFD_RELOC_AARCH64_MOVW_G0_NC: |
6545 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
6546 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
6547 | case BFD_RELOC_AARCH64_MOVW_G3: | |
6548 | if (info->shared) | |
6549 | { | |
6550 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
6551 | (*_bfd_error_handler) | |
6552 | (_("%B: relocation %s against `%s' can not be used when making " | |
6553 | "a shared object; recompile with -fPIC"), | |
6554 | abfd, elfNN_aarch64_howto_table[howto_index].name, | |
6555 | (h) ? h->root.root.string : "a local symbol"); | |
6556 | bfd_set_error (bfd_error_bad_value); | |
6557 | return FALSE; | |
6558 | } | |
6559 | ||
a6bb11b2 YZ |
6560 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
6561 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
6562 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
a06ea964 NC |
6563 | if (h != NULL && info->executable) |
6564 | { | |
6565 | /* If this reloc is in a read-only section, we might | |
6566 | need a copy reloc. We can't check reliably at this | |
6567 | stage whether the section is read-only, as input | |
6568 | sections have not yet been mapped to output sections. | |
6569 | Tentatively set the flag for now, and correct in | |
6570 | adjust_dynamic_symbol. */ | |
6571 | h->non_got_ref = 1; | |
6572 | h->plt.refcount += 1; | |
6573 | h->pointer_equality_needed = 1; | |
6574 | } | |
6575 | /* FIXME:: RR need to handle these in shared libraries | |
6576 | and essentially bomb out as these being non-PIC | |
6577 | relocations in shared libraries. */ | |
6578 | break; | |
6579 | ||
a6bb11b2 YZ |
6580 | case BFD_RELOC_AARCH64_CALL26: |
6581 | case BFD_RELOC_AARCH64_JUMP26: | |
a06ea964 NC |
6582 | /* If this is a local symbol then we resolve it |
6583 | directly without creating a PLT entry. */ | |
6584 | if (h == NULL) | |
6585 | continue; | |
6586 | ||
6587 | h->needs_plt = 1; | |
1419bbe5 WN |
6588 | if (h->plt.refcount <= 0) |
6589 | h->plt.refcount = 1; | |
6590 | else | |
6591 | h->plt.refcount += 1; | |
a06ea964 | 6592 | break; |
a6bb11b2 YZ |
6593 | |
6594 | default: | |
6595 | break; | |
a06ea964 NC |
6596 | } |
6597 | } | |
a6bb11b2 | 6598 | |
a06ea964 NC |
6599 | return TRUE; |
6600 | } | |
6601 | ||
6602 | /* Treat mapping symbols as special target symbols. */ | |
6603 | ||
6604 | static bfd_boolean | |
cec5225b | 6605 | elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
6606 | asymbol *sym) |
6607 | { | |
6608 | return bfd_is_aarch64_special_symbol_name (sym->name, | |
6609 | BFD_AARCH64_SPECIAL_SYM_TYPE_ANY); | |
6610 | } | |
6611 | ||
6612 | /* This is a copy of elf_find_function () from elf.c except that | |
6613 | AArch64 mapping symbols are ignored when looking for function names. */ | |
6614 | ||
6615 | static bfd_boolean | |
6616 | aarch64_elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, | |
a06ea964 | 6617 | asymbol **symbols, |
fb167eb2 | 6618 | asection *section, |
a06ea964 NC |
6619 | bfd_vma offset, |
6620 | const char **filename_ptr, | |
6621 | const char **functionname_ptr) | |
6622 | { | |
6623 | const char *filename = NULL; | |
6624 | asymbol *func = NULL; | |
6625 | bfd_vma low_func = 0; | |
6626 | asymbol **p; | |
6627 | ||
6628 | for (p = symbols; *p != NULL; p++) | |
6629 | { | |
6630 | elf_symbol_type *q; | |
6631 | ||
6632 | q = (elf_symbol_type *) * p; | |
6633 | ||
6634 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) | |
6635 | { | |
6636 | default: | |
6637 | break; | |
6638 | case STT_FILE: | |
6639 | filename = bfd_asymbol_name (&q->symbol); | |
6640 | break; | |
6641 | case STT_FUNC: | |
6642 | case STT_NOTYPE: | |
6643 | /* Skip mapping symbols. */ | |
6644 | if ((q->symbol.flags & BSF_LOCAL) | |
6645 | && (bfd_is_aarch64_special_symbol_name | |
6646 | (q->symbol.name, BFD_AARCH64_SPECIAL_SYM_TYPE_ANY))) | |
6647 | continue; | |
6648 | /* Fall through. */ | |
6649 | if (bfd_get_section (&q->symbol) == section | |
6650 | && q->symbol.value >= low_func && q->symbol.value <= offset) | |
6651 | { | |
6652 | func = (asymbol *) q; | |
6653 | low_func = q->symbol.value; | |
6654 | } | |
6655 | break; | |
6656 | } | |
6657 | } | |
6658 | ||
6659 | if (func == NULL) | |
6660 | return FALSE; | |
6661 | ||
6662 | if (filename_ptr) | |
6663 | *filename_ptr = filename; | |
6664 | if (functionname_ptr) | |
6665 | *functionname_ptr = bfd_asymbol_name (func); | |
6666 | ||
6667 | return TRUE; | |
6668 | } | |
6669 | ||
6670 | ||
6671 | /* Find the nearest line to a particular section and offset, for error | |
6672 | reporting. This code is a duplicate of the code in elf.c, except | |
6673 | that it uses aarch64_elf_find_function. */ | |
6674 | ||
6675 | static bfd_boolean | |
cec5225b | 6676 | elfNN_aarch64_find_nearest_line (bfd *abfd, |
a06ea964 | 6677 | asymbol **symbols, |
fb167eb2 | 6678 | asection *section, |
a06ea964 NC |
6679 | bfd_vma offset, |
6680 | const char **filename_ptr, | |
6681 | const char **functionname_ptr, | |
fb167eb2 AM |
6682 | unsigned int *line_ptr, |
6683 | unsigned int *discriminator_ptr) | |
a06ea964 NC |
6684 | { |
6685 | bfd_boolean found = FALSE; | |
6686 | ||
fb167eb2 | 6687 | if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset, |
a06ea964 | 6688 | filename_ptr, functionname_ptr, |
fb167eb2 AM |
6689 | line_ptr, discriminator_ptr, |
6690 | dwarf_debug_sections, 0, | |
a06ea964 NC |
6691 | &elf_tdata (abfd)->dwarf2_find_line_info)) |
6692 | { | |
6693 | if (!*functionname_ptr) | |
fb167eb2 | 6694 | aarch64_elf_find_function (abfd, symbols, section, offset, |
a06ea964 NC |
6695 | *filename_ptr ? NULL : filename_ptr, |
6696 | functionname_ptr); | |
6697 | ||
6698 | return TRUE; | |
6699 | } | |
6700 | ||
fb167eb2 AM |
6701 | /* Skip _bfd_dwarf1_find_nearest_line since no known AArch64 |
6702 | toolchain uses DWARF1. */ | |
6703 | ||
a06ea964 NC |
6704 | if (!_bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, |
6705 | &found, filename_ptr, | |
6706 | functionname_ptr, line_ptr, | |
6707 | &elf_tdata (abfd)->line_info)) | |
6708 | return FALSE; | |
6709 | ||
6710 | if (found && (*functionname_ptr || *line_ptr)) | |
6711 | return TRUE; | |
6712 | ||
6713 | if (symbols == NULL) | |
6714 | return FALSE; | |
6715 | ||
fb167eb2 | 6716 | if (!aarch64_elf_find_function (abfd, symbols, section, offset, |
a06ea964 NC |
6717 | filename_ptr, functionname_ptr)) |
6718 | return FALSE; | |
6719 | ||
6720 | *line_ptr = 0; | |
6721 | return TRUE; | |
6722 | } | |
6723 | ||
6724 | static bfd_boolean | |
cec5225b | 6725 | elfNN_aarch64_find_inliner_info (bfd *abfd, |
a06ea964 NC |
6726 | const char **filename_ptr, |
6727 | const char **functionname_ptr, | |
6728 | unsigned int *line_ptr) | |
6729 | { | |
6730 | bfd_boolean found; | |
6731 | found = _bfd_dwarf2_find_inliner_info | |
6732 | (abfd, filename_ptr, | |
6733 | functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info); | |
6734 | return found; | |
6735 | } | |
6736 | ||
6737 | ||
6738 | static void | |
cec5225b | 6739 | elfNN_aarch64_post_process_headers (bfd *abfd, |
1419bbe5 | 6740 | struct bfd_link_info *link_info) |
a06ea964 NC |
6741 | { |
6742 | Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */ | |
6743 | ||
6744 | i_ehdrp = elf_elfheader (abfd); | |
a06ea964 | 6745 | i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION; |
1419bbe5 | 6746 | |
78245035 | 6747 | _bfd_elf_post_process_headers (abfd, link_info); |
a06ea964 NC |
6748 | } |
6749 | ||
6750 | static enum elf_reloc_type_class | |
cec5225b | 6751 | elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
7e612e98 AM |
6752 | const asection *rel_sec ATTRIBUTE_UNUSED, |
6753 | const Elf_Internal_Rela *rela) | |
a06ea964 | 6754 | { |
cec5225b | 6755 | switch ((int) ELFNN_R_TYPE (rela->r_info)) |
a06ea964 | 6756 | { |
a6bb11b2 | 6757 | case AARCH64_R (RELATIVE): |
a06ea964 | 6758 | return reloc_class_relative; |
a6bb11b2 | 6759 | case AARCH64_R (JUMP_SLOT): |
a06ea964 | 6760 | return reloc_class_plt; |
a6bb11b2 | 6761 | case AARCH64_R (COPY): |
a06ea964 NC |
6762 | return reloc_class_copy; |
6763 | default: | |
6764 | return reloc_class_normal; | |
6765 | } | |
6766 | } | |
6767 | ||
a06ea964 NC |
6768 | /* Handle an AArch64 specific section when reading an object file. This is |
6769 | called when bfd_section_from_shdr finds a section with an unknown | |
6770 | type. */ | |
6771 | ||
6772 | static bfd_boolean | |
cec5225b | 6773 | elfNN_aarch64_section_from_shdr (bfd *abfd, |
a06ea964 NC |
6774 | Elf_Internal_Shdr *hdr, |
6775 | const char *name, int shindex) | |
6776 | { | |
6777 | /* There ought to be a place to keep ELF backend specific flags, but | |
6778 | at the moment there isn't one. We just keep track of the | |
6779 | sections by their name, instead. Fortunately, the ABI gives | |
6780 | names for all the AArch64 specific sections, so we will probably get | |
6781 | away with this. */ | |
6782 | switch (hdr->sh_type) | |
6783 | { | |
6784 | case SHT_AARCH64_ATTRIBUTES: | |
6785 | break; | |
6786 | ||
6787 | default: | |
6788 | return FALSE; | |
6789 | } | |
6790 | ||
6791 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
6792 | return FALSE; | |
6793 | ||
6794 | return TRUE; | |
6795 | } | |
6796 | ||
6797 | /* A structure used to record a list of sections, independently | |
6798 | of the next and prev fields in the asection structure. */ | |
6799 | typedef struct section_list | |
6800 | { | |
6801 | asection *sec; | |
6802 | struct section_list *next; | |
6803 | struct section_list *prev; | |
6804 | } | |
6805 | section_list; | |
6806 | ||
6807 | /* Unfortunately we need to keep a list of sections for which | |
6808 | an _aarch64_elf_section_data structure has been allocated. This | |
cec5225b | 6809 | is because it is possible for functions like elfNN_aarch64_write_section |
a06ea964 NC |
6810 | to be called on a section which has had an elf_data_structure |
6811 | allocated for it (and so the used_by_bfd field is valid) but | |
6812 | for which the AArch64 extended version of this structure - the | |
6813 | _aarch64_elf_section_data structure - has not been allocated. */ | |
6814 | static section_list *sections_with_aarch64_elf_section_data = NULL; | |
6815 | ||
6816 | static void | |
6817 | record_section_with_aarch64_elf_section_data (asection *sec) | |
6818 | { | |
6819 | struct section_list *entry; | |
6820 | ||
6821 | entry = bfd_malloc (sizeof (*entry)); | |
6822 | if (entry == NULL) | |
6823 | return; | |
6824 | entry->sec = sec; | |
6825 | entry->next = sections_with_aarch64_elf_section_data; | |
6826 | entry->prev = NULL; | |
6827 | if (entry->next != NULL) | |
6828 | entry->next->prev = entry; | |
6829 | sections_with_aarch64_elf_section_data = entry; | |
6830 | } | |
6831 | ||
6832 | static struct section_list * | |
6833 | find_aarch64_elf_section_entry (asection *sec) | |
6834 | { | |
6835 | struct section_list *entry; | |
6836 | static struct section_list *last_entry = NULL; | |
6837 | ||
6838 | /* This is a short cut for the typical case where the sections are added | |
6839 | to the sections_with_aarch64_elf_section_data list in forward order and | |
6840 | then looked up here in backwards order. This makes a real difference | |
6841 | to the ld-srec/sec64k.exp linker test. */ | |
6842 | entry = sections_with_aarch64_elf_section_data; | |
6843 | if (last_entry != NULL) | |
6844 | { | |
6845 | if (last_entry->sec == sec) | |
6846 | entry = last_entry; | |
6847 | else if (last_entry->next != NULL && last_entry->next->sec == sec) | |
6848 | entry = last_entry->next; | |
6849 | } | |
6850 | ||
6851 | for (; entry; entry = entry->next) | |
6852 | if (entry->sec == sec) | |
6853 | break; | |
6854 | ||
6855 | if (entry) | |
6856 | /* Record the entry prior to this one - it is the entry we are | |
6857 | most likely to want to locate next time. Also this way if we | |
6858 | have been called from | |
6859 | unrecord_section_with_aarch64_elf_section_data () we will not | |
6860 | be caching a pointer that is about to be freed. */ | |
6861 | last_entry = entry->prev; | |
6862 | ||
6863 | return entry; | |
6864 | } | |
6865 | ||
6866 | static void | |
6867 | unrecord_section_with_aarch64_elf_section_data (asection *sec) | |
6868 | { | |
6869 | struct section_list *entry; | |
6870 | ||
6871 | entry = find_aarch64_elf_section_entry (sec); | |
6872 | ||
6873 | if (entry) | |
6874 | { | |
6875 | if (entry->prev != NULL) | |
6876 | entry->prev->next = entry->next; | |
6877 | if (entry->next != NULL) | |
6878 | entry->next->prev = entry->prev; | |
6879 | if (entry == sections_with_aarch64_elf_section_data) | |
6880 | sections_with_aarch64_elf_section_data = entry->next; | |
6881 | free (entry); | |
6882 | } | |
6883 | } | |
6884 | ||
6885 | ||
6886 | typedef struct | |
6887 | { | |
6888 | void *finfo; | |
6889 | struct bfd_link_info *info; | |
6890 | asection *sec; | |
6891 | int sec_shndx; | |
6892 | int (*func) (void *, const char *, Elf_Internal_Sym *, | |
6893 | asection *, struct elf_link_hash_entry *); | |
6894 | } output_arch_syminfo; | |
6895 | ||
6896 | enum map_symbol_type | |
6897 | { | |
6898 | AARCH64_MAP_INSN, | |
6899 | AARCH64_MAP_DATA | |
6900 | }; | |
6901 | ||
6902 | ||
6903 | /* Output a single mapping symbol. */ | |
6904 | ||
6905 | static bfd_boolean | |
cec5225b | 6906 | elfNN_aarch64_output_map_sym (output_arch_syminfo *osi, |
a06ea964 NC |
6907 | enum map_symbol_type type, bfd_vma offset) |
6908 | { | |
6909 | static const char *names[2] = { "$x", "$d" }; | |
6910 | Elf_Internal_Sym sym; | |
6911 | ||
6912 | sym.st_value = (osi->sec->output_section->vma | |
6913 | + osi->sec->output_offset + offset); | |
6914 | sym.st_size = 0; | |
6915 | sym.st_other = 0; | |
6916 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
6917 | sym.st_shndx = osi->sec_shndx; | |
6918 | return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1; | |
6919 | } | |
6920 | ||
6921 | ||
6922 | ||
6923 | /* Output mapping symbols for PLT entries associated with H. */ | |
6924 | ||
6925 | static bfd_boolean | |
cec5225b | 6926 | elfNN_aarch64_output_plt_map (struct elf_link_hash_entry *h, void *inf) |
a06ea964 NC |
6927 | { |
6928 | output_arch_syminfo *osi = (output_arch_syminfo *) inf; | |
6929 | bfd_vma addr; | |
6930 | ||
6931 | if (h->root.type == bfd_link_hash_indirect) | |
6932 | return TRUE; | |
6933 | ||
6934 | if (h->root.type == bfd_link_hash_warning) | |
6935 | /* When warning symbols are created, they **replace** the "real" | |
6936 | entry in the hash table, thus we never get to see the real | |
6937 | symbol in a hash traversal. So look at it now. */ | |
6938 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6939 | ||
6940 | if (h->plt.offset == (bfd_vma) - 1) | |
6941 | return TRUE; | |
6942 | ||
6943 | addr = h->plt.offset; | |
6944 | if (addr == 32) | |
6945 | { | |
cec5225b | 6946 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 NC |
6947 | return FALSE; |
6948 | } | |
6949 | return TRUE; | |
6950 | } | |
6951 | ||
6952 | ||
6953 | /* Output a single local symbol for a generated stub. */ | |
6954 | ||
6955 | static bfd_boolean | |
cec5225b | 6956 | elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name, |
a06ea964 NC |
6957 | bfd_vma offset, bfd_vma size) |
6958 | { | |
6959 | Elf_Internal_Sym sym; | |
6960 | ||
6961 | sym.st_value = (osi->sec->output_section->vma | |
6962 | + osi->sec->output_offset + offset); | |
6963 | sym.st_size = size; | |
6964 | sym.st_other = 0; | |
6965 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
6966 | sym.st_shndx = osi->sec_shndx; | |
6967 | return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1; | |
6968 | } | |
6969 | ||
6970 | static bfd_boolean | |
6971 | aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) | |
6972 | { | |
cec5225b | 6973 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
6974 | asection *stub_sec; |
6975 | bfd_vma addr; | |
6976 | char *stub_name; | |
6977 | output_arch_syminfo *osi; | |
6978 | ||
6979 | /* Massage our args to the form they really have. */ | |
cec5225b | 6980 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
6981 | osi = (output_arch_syminfo *) in_arg; |
6982 | ||
6983 | stub_sec = stub_entry->stub_sec; | |
6984 | ||
6985 | /* Ensure this stub is attached to the current section being | |
6986 | processed. */ | |
6987 | if (stub_sec != osi->sec) | |
6988 | return TRUE; | |
6989 | ||
6990 | addr = (bfd_vma) stub_entry->stub_offset; | |
6991 | ||
6992 | stub_name = stub_entry->output_name; | |
6993 | ||
6994 | switch (stub_entry->stub_type) | |
6995 | { | |
6996 | case aarch64_stub_adrp_branch: | |
cec5225b | 6997 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, |
a06ea964 NC |
6998 | sizeof (aarch64_adrp_branch_stub))) |
6999 | return FALSE; | |
cec5225b | 7000 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 NC |
7001 | return FALSE; |
7002 | break; | |
7003 | case aarch64_stub_long_branch: | |
cec5225b | 7004 | if (!elfNN_aarch64_output_stub_sym |
a06ea964 NC |
7005 | (osi, stub_name, addr, sizeof (aarch64_long_branch_stub))) |
7006 | return FALSE; | |
cec5225b | 7007 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 | 7008 | return FALSE; |
cec5225b | 7009 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16)) |
a06ea964 NC |
7010 | return FALSE; |
7011 | break; | |
68fcca92 JW |
7012 | case aarch64_stub_erratum_835769_veneer: |
7013 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
7014 | sizeof (aarch64_erratum_835769_stub))) | |
7015 | return FALSE; | |
7016 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
7017 | return FALSE; | |
7018 | break; | |
4106101c MS |
7019 | case aarch64_stub_erratum_843419_veneer: |
7020 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
7021 | sizeof (aarch64_erratum_843419_stub))) | |
7022 | return FALSE; | |
7023 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
7024 | return FALSE; | |
7025 | break; | |
7026 | ||
a06ea964 | 7027 | default: |
8e2fe09f | 7028 | abort (); |
a06ea964 NC |
7029 | } |
7030 | ||
7031 | return TRUE; | |
7032 | } | |
7033 | ||
7034 | /* Output mapping symbols for linker generated sections. */ | |
7035 | ||
7036 | static bfd_boolean | |
cec5225b | 7037 | elfNN_aarch64_output_arch_local_syms (bfd *output_bfd, |
a06ea964 NC |
7038 | struct bfd_link_info *info, |
7039 | void *finfo, | |
7040 | int (*func) (void *, const char *, | |
7041 | Elf_Internal_Sym *, | |
7042 | asection *, | |
7043 | struct elf_link_hash_entry | |
7044 | *)) | |
7045 | { | |
7046 | output_arch_syminfo osi; | |
cec5225b | 7047 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 7048 | |
cec5225b | 7049 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7050 | |
7051 | osi.finfo = finfo; | |
7052 | osi.info = info; | |
7053 | osi.func = func; | |
7054 | ||
7055 | /* Long calls stubs. */ | |
7056 | if (htab->stub_bfd && htab->stub_bfd->sections) | |
7057 | { | |
7058 | asection *stub_sec; | |
7059 | ||
7060 | for (stub_sec = htab->stub_bfd->sections; | |
7061 | stub_sec != NULL; stub_sec = stub_sec->next) | |
7062 | { | |
7063 | /* Ignore non-stub sections. */ | |
7064 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
7065 | continue; | |
7066 | ||
7067 | osi.sec = stub_sec; | |
7068 | ||
7069 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
7070 | (output_bfd, osi.sec->output_section); | |
7071 | ||
61865519 MS |
7072 | /* The first instruction in a stub is always a branch. */ |
7073 | if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0)) | |
7074 | return FALSE; | |
7075 | ||
a06ea964 NC |
7076 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub, |
7077 | &osi); | |
7078 | } | |
7079 | } | |
7080 | ||
7081 | /* Finally, output mapping symbols for the PLT. */ | |
7082 | if (!htab->root.splt || htab->root.splt->size == 0) | |
7083 | return TRUE; | |
7084 | ||
7085 | /* For now live without mapping symbols for the plt. */ | |
7086 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
7087 | (output_bfd, htab->root.splt->output_section); | |
7088 | osi.sec = htab->root.splt; | |
7089 | ||
cec5225b | 7090 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_output_plt_map, |
a06ea964 NC |
7091 | (void *) &osi); |
7092 | ||
7093 | return TRUE; | |
7094 | ||
7095 | } | |
7096 | ||
7097 | /* Allocate target specific section data. */ | |
7098 | ||
7099 | static bfd_boolean | |
cec5225b | 7100 | elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec) |
a06ea964 NC |
7101 | { |
7102 | if (!sec->used_by_bfd) | |
7103 | { | |
7104 | _aarch64_elf_section_data *sdata; | |
7105 | bfd_size_type amt = sizeof (*sdata); | |
7106 | ||
7107 | sdata = bfd_zalloc (abfd, amt); | |
7108 | if (sdata == NULL) | |
7109 | return FALSE; | |
7110 | sec->used_by_bfd = sdata; | |
7111 | } | |
7112 | ||
7113 | record_section_with_aarch64_elf_section_data (sec); | |
7114 | ||
7115 | return _bfd_elf_new_section_hook (abfd, sec); | |
7116 | } | |
7117 | ||
7118 | ||
7119 | static void | |
7120 | unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
7121 | asection *sec, | |
7122 | void *ignore ATTRIBUTE_UNUSED) | |
7123 | { | |
7124 | unrecord_section_with_aarch64_elf_section_data (sec); | |
7125 | } | |
7126 | ||
7127 | static bfd_boolean | |
cec5225b | 7128 | elfNN_aarch64_close_and_cleanup (bfd *abfd) |
a06ea964 NC |
7129 | { |
7130 | if (abfd->sections) | |
7131 | bfd_map_over_sections (abfd, | |
7132 | unrecord_section_via_map_over_sections, NULL); | |
7133 | ||
7134 | return _bfd_elf_close_and_cleanup (abfd); | |
7135 | } | |
7136 | ||
7137 | static bfd_boolean | |
cec5225b | 7138 | elfNN_aarch64_bfd_free_cached_info (bfd *abfd) |
a06ea964 NC |
7139 | { |
7140 | if (abfd->sections) | |
7141 | bfd_map_over_sections (abfd, | |
7142 | unrecord_section_via_map_over_sections, NULL); | |
7143 | ||
7144 | return _bfd_free_cached_info (abfd); | |
7145 | } | |
7146 | ||
a06ea964 NC |
7147 | /* Create dynamic sections. This is different from the ARM backend in that |
7148 | the got, plt, gotplt and their relocation sections are all created in the | |
7149 | standard part of the bfd elf backend. */ | |
7150 | ||
7151 | static bfd_boolean | |
cec5225b | 7152 | elfNN_aarch64_create_dynamic_sections (bfd *dynobj, |
a06ea964 NC |
7153 | struct bfd_link_info *info) |
7154 | { | |
cec5225b | 7155 | struct elf_aarch64_link_hash_table *htab; |
cc0efaa8 MS |
7156 | |
7157 | /* We need to create .got section. */ | |
7158 | if (!aarch64_elf_create_got_section (dynobj, info)) | |
7159 | return FALSE; | |
a06ea964 NC |
7160 | |
7161 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
7162 | return FALSE; | |
7163 | ||
cec5225b | 7164 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7165 | htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss"); |
7166 | if (!info->shared) | |
7167 | htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss"); | |
7168 | ||
7169 | if (!htab->sdynbss || (!info->shared && !htab->srelbss)) | |
7170 | abort (); | |
7171 | ||
a06ea964 NC |
7172 | return TRUE; |
7173 | } | |
7174 | ||
7175 | ||
7176 | /* Allocate space in .plt, .got and associated reloc sections for | |
7177 | dynamic relocs. */ | |
7178 | ||
7179 | static bfd_boolean | |
cec5225b | 7180 | elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
a06ea964 NC |
7181 | { |
7182 | struct bfd_link_info *info; | |
cec5225b YZ |
7183 | struct elf_aarch64_link_hash_table *htab; |
7184 | struct elf_aarch64_link_hash_entry *eh; | |
a06ea964 NC |
7185 | struct elf_dyn_relocs *p; |
7186 | ||
7187 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
7188 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
7189 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
7190 | ||
7191 | There is no need to process bfd_link_hash_indirect symbols here | |
7192 | because we will also be presented with the concrete instance of | |
cec5225b | 7193 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been |
a06ea964 NC |
7194 | called to copy all relevant data from the generic to the concrete |
7195 | symbol instance. | |
7196 | */ | |
7197 | if (h->root.type == bfd_link_hash_indirect) | |
7198 | return TRUE; | |
7199 | ||
7200 | if (h->root.type == bfd_link_hash_warning) | |
7201 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7202 | ||
7203 | info = (struct bfd_link_info *) inf; | |
cec5225b | 7204 | htab = elf_aarch64_hash_table (info); |
a06ea964 | 7205 | |
1419bbe5 WN |
7206 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
7207 | here if it is defined and referenced in a non-shared object. */ | |
7208 | if (h->type == STT_GNU_IFUNC | |
7209 | && h->def_regular) | |
7210 | return TRUE; | |
7211 | else if (htab->root.dynamic_sections_created && h->plt.refcount > 0) | |
a06ea964 NC |
7212 | { |
7213 | /* Make sure this symbol is output as a dynamic symbol. | |
7214 | Undefined weak syms won't yet be marked as dynamic. */ | |
7215 | if (h->dynindx == -1 && !h->forced_local) | |
7216 | { | |
7217 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
7218 | return FALSE; | |
7219 | } | |
7220 | ||
7221 | if (info->shared || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
7222 | { | |
7223 | asection *s = htab->root.splt; | |
7224 | ||
7225 | /* If this is the first .plt entry, make room for the special | |
7226 | first entry. */ | |
7227 | if (s->size == 0) | |
7228 | s->size += htab->plt_header_size; | |
7229 | ||
7230 | h->plt.offset = s->size; | |
7231 | ||
7232 | /* If this symbol is not defined in a regular file, and we are | |
7233 | not generating a shared library, then set the symbol to this | |
7234 | location in the .plt. This is required to make function | |
7235 | pointers compare as equal between the normal executable and | |
7236 | the shared library. */ | |
7237 | if (!info->shared && !h->def_regular) | |
7238 | { | |
7239 | h->root.u.def.section = s; | |
7240 | h->root.u.def.value = h->plt.offset; | |
7241 | } | |
7242 | ||
7243 | /* Make room for this entry. For now we only create the | |
7244 | small model PLT entries. We later need to find a way | |
7245 | of relaxing into these from the large model PLT entries. */ | |
7246 | s->size += PLT_SMALL_ENTRY_SIZE; | |
7247 | ||
7248 | /* We also need to make an entry in the .got.plt section, which | |
7249 | will be placed in the .got section by the linker script. */ | |
7250 | htab->root.sgotplt->size += GOT_ENTRY_SIZE; | |
7251 | ||
7252 | /* We also need to make an entry in the .rela.plt section. */ | |
7253 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
7254 | ||
7255 | /* We need to ensure that all GOT entries that serve the PLT | |
7256 | are consecutive with the special GOT slots [0] [1] and | |
7257 | [2]. Any addtional relocations, such as | |
7258 | R_AARCH64_TLSDESC, must be placed after the PLT related | |
7259 | entries. We abuse the reloc_count such that during | |
7260 | sizing we adjust reloc_count to indicate the number of | |
7261 | PLT related reserved entries. In subsequent phases when | |
7262 | filling in the contents of the reloc entries, PLT related | |
7263 | entries are placed by computing their PLT index (0 | |
7264 | .. reloc_count). While other none PLT relocs are placed | |
7265 | at the slot indicated by reloc_count and reloc_count is | |
7266 | updated. */ | |
7267 | ||
7268 | htab->root.srelplt->reloc_count++; | |
7269 | } | |
7270 | else | |
7271 | { | |
7272 | h->plt.offset = (bfd_vma) - 1; | |
7273 | h->needs_plt = 0; | |
7274 | } | |
7275 | } | |
7276 | else | |
7277 | { | |
7278 | h->plt.offset = (bfd_vma) - 1; | |
7279 | h->needs_plt = 0; | |
7280 | } | |
7281 | ||
cec5225b | 7282 | eh = (struct elf_aarch64_link_hash_entry *) h; |
a06ea964 NC |
7283 | eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; |
7284 | ||
7285 | if (h->got.refcount > 0) | |
7286 | { | |
7287 | bfd_boolean dyn; | |
cec5225b | 7288 | unsigned got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
7289 | |
7290 | h->got.offset = (bfd_vma) - 1; | |
7291 | ||
7292 | dyn = htab->root.dynamic_sections_created; | |
7293 | ||
7294 | /* Make sure this symbol is output as a dynamic symbol. | |
7295 | Undefined weak syms won't yet be marked as dynamic. */ | |
7296 | if (dyn && h->dynindx == -1 && !h->forced_local) | |
7297 | { | |
7298 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
7299 | return FALSE; | |
7300 | } | |
7301 | ||
7302 | if (got_type == GOT_UNKNOWN) | |
7303 | { | |
7304 | } | |
7305 | else if (got_type == GOT_NORMAL) | |
7306 | { | |
7307 | h->got.offset = htab->root.sgot->size; | |
7308 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
7309 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7310 | || h->root.type != bfd_link_hash_undefweak) | |
7311 | && (info->shared | |
7312 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
7313 | { | |
7314 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
7315 | } | |
7316 | } | |
7317 | else | |
7318 | { | |
7319 | int indx; | |
7320 | if (got_type & GOT_TLSDESC_GD) | |
7321 | { | |
7322 | eh->tlsdesc_got_jump_table_offset = | |
7323 | (htab->root.sgotplt->size | |
7324 | - aarch64_compute_jump_table_size (htab)); | |
7325 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
7326 | h->got.offset = (bfd_vma) - 2; | |
7327 | } | |
7328 | ||
7329 | if (got_type & GOT_TLS_GD) | |
7330 | { | |
7331 | h->got.offset = htab->root.sgot->size; | |
7332 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
7333 | } | |
7334 | ||
7335 | if (got_type & GOT_TLS_IE) | |
7336 | { | |
7337 | h->got.offset = htab->root.sgot->size; | |
7338 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
7339 | } | |
7340 | ||
7341 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
7342 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7343 | || h->root.type != bfd_link_hash_undefweak) | |
7344 | && (info->shared | |
7345 | || indx != 0 | |
7346 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
7347 | { | |
7348 | if (got_type & GOT_TLSDESC_GD) | |
7349 | { | |
7350 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
7351 | /* Note reloc_count not incremented here! We have | |
7352 | already adjusted reloc_count for this relocation | |
7353 | type. */ | |
7354 | ||
7355 | /* TLSDESC PLT is now needed, but not yet determined. */ | |
7356 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
7357 | } | |
7358 | ||
7359 | if (got_type & GOT_TLS_GD) | |
7360 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
7361 | ||
7362 | if (got_type & GOT_TLS_IE) | |
7363 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
7364 | } | |
7365 | } | |
7366 | } | |
7367 | else | |
7368 | { | |
7369 | h->got.offset = (bfd_vma) - 1; | |
7370 | } | |
7371 | ||
7372 | if (eh->dyn_relocs == NULL) | |
7373 | return TRUE; | |
7374 | ||
7375 | /* In the shared -Bsymbolic case, discard space allocated for | |
7376 | dynamic pc-relative relocs against symbols which turn out to be | |
7377 | defined in regular objects. For the normal shared case, discard | |
7378 | space for pc-relative relocs that have become local due to symbol | |
7379 | visibility changes. */ | |
7380 | ||
7381 | if (info->shared) | |
7382 | { | |
7383 | /* Relocs that use pc_count are those that appear on a call | |
7384 | insn, or certain REL relocs that can generated via assembly. | |
7385 | We want calls to protected symbols to resolve directly to the | |
7386 | function rather than going via the plt. If people want | |
7387 | function pointer comparisons to work as expected then they | |
7388 | should avoid writing weird assembly. */ | |
7389 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
7390 | { | |
7391 | struct elf_dyn_relocs **pp; | |
7392 | ||
7393 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) | |
7394 | { | |
7395 | p->count -= p->pc_count; | |
7396 | p->pc_count = 0; | |
7397 | if (p->count == 0) | |
7398 | *pp = p->next; | |
7399 | else | |
7400 | pp = &p->next; | |
7401 | } | |
7402 | } | |
7403 | ||
7404 | /* Also discard relocs on undefined weak syms with non-default | |
7405 | visibility. */ | |
7406 | if (eh->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak) | |
7407 | { | |
7408 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
7409 | eh->dyn_relocs = NULL; | |
7410 | ||
7411 | /* Make sure undefined weak symbols are output as a dynamic | |
7412 | symbol in PIEs. */ | |
7413 | else if (h->dynindx == -1 | |
7414 | && !h->forced_local | |
7415 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
7416 | return FALSE; | |
7417 | } | |
7418 | ||
7419 | } | |
7420 | else if (ELIMINATE_COPY_RELOCS) | |
7421 | { | |
7422 | /* For the non-shared case, discard space for relocs against | |
7423 | symbols which turn out to need copy relocs or are not | |
7424 | dynamic. */ | |
7425 | ||
7426 | if (!h->non_got_ref | |
7427 | && ((h->def_dynamic | |
7428 | && !h->def_regular) | |
7429 | || (htab->root.dynamic_sections_created | |
7430 | && (h->root.type == bfd_link_hash_undefweak | |
7431 | || h->root.type == bfd_link_hash_undefined)))) | |
7432 | { | |
7433 | /* Make sure this symbol is output as a dynamic symbol. | |
7434 | Undefined weak syms won't yet be marked as dynamic. */ | |
7435 | if (h->dynindx == -1 | |
7436 | && !h->forced_local | |
7437 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
7438 | return FALSE; | |
7439 | ||
7440 | /* If that succeeded, we know we'll be keeping all the | |
7441 | relocs. */ | |
7442 | if (h->dynindx != -1) | |
7443 | goto keep; | |
7444 | } | |
7445 | ||
7446 | eh->dyn_relocs = NULL; | |
7447 | ||
7448 | keep:; | |
7449 | } | |
7450 | ||
7451 | /* Finally, allocate space. */ | |
7452 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7453 | { | |
7454 | asection *sreloc; | |
7455 | ||
7456 | sreloc = elf_section_data (p->sec)->sreloc; | |
7457 | ||
7458 | BFD_ASSERT (sreloc != NULL); | |
7459 | ||
7460 | sreloc->size += p->count * RELOC_SIZE (htab); | |
7461 | } | |
7462 | ||
7463 | return TRUE; | |
7464 | } | |
7465 | ||
1419bbe5 WN |
7466 | /* Allocate space in .plt, .got and associated reloc sections for |
7467 | ifunc dynamic relocs. */ | |
7468 | ||
7469 | static bfd_boolean | |
7470 | elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h, | |
7471 | void *inf) | |
7472 | { | |
7473 | struct bfd_link_info *info; | |
7474 | struct elf_aarch64_link_hash_table *htab; | |
7475 | struct elf_aarch64_link_hash_entry *eh; | |
7476 | ||
7477 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
7478 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
7479 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
7480 | ||
7481 | There is no need to process bfd_link_hash_indirect symbols here | |
7482 | because we will also be presented with the concrete instance of | |
7483 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been | |
7484 | called to copy all relevant data from the generic to the concrete | |
7485 | symbol instance. | |
7486 | */ | |
7487 | if (h->root.type == bfd_link_hash_indirect) | |
7488 | return TRUE; | |
7489 | ||
7490 | if (h->root.type == bfd_link_hash_warning) | |
7491 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7492 | ||
7493 | info = (struct bfd_link_info *) inf; | |
7494 | htab = elf_aarch64_hash_table (info); | |
7495 | ||
7496 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
7497 | ||
7498 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it | |
7499 | here if it is defined and referenced in a non-shared object. */ | |
7500 | if (h->type == STT_GNU_IFUNC | |
7501 | && h->def_regular) | |
7502 | return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, | |
7503 | &eh->dyn_relocs, | |
7504 | htab->plt_entry_size, | |
7505 | htab->plt_header_size, | |
7506 | GOT_ENTRY_SIZE); | |
7507 | return TRUE; | |
7508 | } | |
7509 | ||
7510 | /* Allocate space in .plt, .got and associated reloc sections for | |
7511 | local dynamic relocs. */ | |
7512 | ||
7513 | static bfd_boolean | |
7514 | elfNN_aarch64_allocate_local_dynrelocs (void **slot, void *inf) | |
7515 | { | |
7516 | struct elf_link_hash_entry *h | |
7517 | = (struct elf_link_hash_entry *) *slot; | |
7518 | ||
7519 | if (h->type != STT_GNU_IFUNC | |
7520 | || !h->def_regular | |
7521 | || !h->ref_regular | |
7522 | || !h->forced_local | |
7523 | || h->root.type != bfd_link_hash_defined) | |
7524 | abort (); | |
7525 | ||
7526 | return elfNN_aarch64_allocate_dynrelocs (h, inf); | |
7527 | } | |
7528 | ||
7529 | /* Allocate space in .plt, .got and associated reloc sections for | |
7530 | local ifunc dynamic relocs. */ | |
7531 | ||
7532 | static bfd_boolean | |
7533 | elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf) | |
7534 | { | |
7535 | struct elf_link_hash_entry *h | |
7536 | = (struct elf_link_hash_entry *) *slot; | |
7537 | ||
7538 | if (h->type != STT_GNU_IFUNC | |
7539 | || !h->def_regular | |
7540 | || !h->ref_regular | |
7541 | || !h->forced_local | |
7542 | || h->root.type != bfd_link_hash_defined) | |
7543 | abort (); | |
7544 | ||
7545 | return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf); | |
7546 | } | |
a06ea964 | 7547 | |
a06ea964 NC |
7548 | /* This is the most important function of all . Innocuosly named |
7549 | though ! */ | |
7550 | static bfd_boolean | |
cec5225b | 7551 | elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
7552 | struct bfd_link_info *info) |
7553 | { | |
cec5225b | 7554 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
7555 | bfd *dynobj; |
7556 | asection *s; | |
7557 | bfd_boolean relocs; | |
7558 | bfd *ibfd; | |
7559 | ||
cec5225b | 7560 | htab = elf_aarch64_hash_table ((info)); |
a06ea964 NC |
7561 | dynobj = htab->root.dynobj; |
7562 | ||
7563 | BFD_ASSERT (dynobj != NULL); | |
7564 | ||
7565 | if (htab->root.dynamic_sections_created) | |
7566 | { | |
7567 | if (info->executable) | |
7568 | { | |
7569 | s = bfd_get_linker_section (dynobj, ".interp"); | |
7570 | if (s == NULL) | |
7571 | abort (); | |
7572 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
7573 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
7574 | } | |
7575 | } | |
7576 | ||
7577 | /* Set up .got offsets for local syms, and space for local dynamic | |
7578 | relocs. */ | |
c72f2fb2 | 7579 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
a06ea964 NC |
7580 | { |
7581 | struct elf_aarch64_local_symbol *locals = NULL; | |
7582 | Elf_Internal_Shdr *symtab_hdr; | |
7583 | asection *srel; | |
7584 | unsigned int i; | |
7585 | ||
7586 | if (!is_aarch64_elf (ibfd)) | |
7587 | continue; | |
7588 | ||
7589 | for (s = ibfd->sections; s != NULL; s = s->next) | |
7590 | { | |
7591 | struct elf_dyn_relocs *p; | |
7592 | ||
7593 | for (p = (struct elf_dyn_relocs *) | |
7594 | (elf_section_data (s)->local_dynrel); p != NULL; p = p->next) | |
7595 | { | |
7596 | if (!bfd_is_abs_section (p->sec) | |
7597 | && bfd_is_abs_section (p->sec->output_section)) | |
7598 | { | |
7599 | /* Input section has been discarded, either because | |
7600 | it is a copy of a linkonce section or due to | |
7601 | linker script /DISCARD/, so we'll be discarding | |
7602 | the relocs too. */ | |
7603 | } | |
7604 | else if (p->count != 0) | |
7605 | { | |
7606 | srel = elf_section_data (p->sec)->sreloc; | |
7607 | srel->size += p->count * RELOC_SIZE (htab); | |
7608 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
7609 | info->flags |= DF_TEXTREL; | |
7610 | } | |
7611 | } | |
7612 | } | |
7613 | ||
cec5225b | 7614 | locals = elf_aarch64_locals (ibfd); |
a06ea964 NC |
7615 | if (!locals) |
7616 | continue; | |
7617 | ||
7618 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
7619 | srel = htab->root.srelgot; | |
7620 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
7621 | { | |
7622 | locals[i].got_offset = (bfd_vma) - 1; | |
7623 | locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
7624 | if (locals[i].got_refcount > 0) | |
7625 | { | |
7626 | unsigned got_type = locals[i].got_type; | |
7627 | if (got_type & GOT_TLSDESC_GD) | |
7628 | { | |
7629 | locals[i].tlsdesc_got_jump_table_offset = | |
7630 | (htab->root.sgotplt->size | |
7631 | - aarch64_compute_jump_table_size (htab)); | |
7632 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
7633 | locals[i].got_offset = (bfd_vma) - 2; | |
7634 | } | |
7635 | ||
7636 | if (got_type & GOT_TLS_GD) | |
7637 | { | |
7638 | locals[i].got_offset = htab->root.sgot->size; | |
7639 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
7640 | } | |
7641 | ||
b53b1bed JW |
7642 | if (got_type & GOT_TLS_IE |
7643 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
7644 | { |
7645 | locals[i].got_offset = htab->root.sgot->size; | |
7646 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
7647 | } | |
7648 | ||
7649 | if (got_type == GOT_UNKNOWN) | |
7650 | { | |
7651 | } | |
7652 | ||
a06ea964 NC |
7653 | if (info->shared) |
7654 | { | |
7655 | if (got_type & GOT_TLSDESC_GD) | |
7656 | { | |
7657 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
7658 | /* Note RELOC_COUNT not incremented here! */ | |
7659 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
7660 | } | |
7661 | ||
7662 | if (got_type & GOT_TLS_GD) | |
7663 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
7664 | ||
b53b1bed JW |
7665 | if (got_type & GOT_TLS_IE |
7666 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
7667 | htab->root.srelgot->size += RELOC_SIZE (htab); |
7668 | } | |
7669 | } | |
7670 | else | |
7671 | { | |
7672 | locals[i].got_refcount = (bfd_vma) - 1; | |
7673 | } | |
7674 | } | |
7675 | } | |
7676 | ||
7677 | ||
7678 | /* Allocate global sym .plt and .got entries, and space for global | |
7679 | sym dynamic relocs. */ | |
cec5225b | 7680 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs, |
a06ea964 NC |
7681 | info); |
7682 | ||
1419bbe5 WN |
7683 | /* Allocate global ifunc sym .plt and .got entries, and space for global |
7684 | ifunc sym dynamic relocs. */ | |
7685 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs, | |
7686 | info); | |
7687 | ||
7688 | /* Allocate .plt and .got entries, and space for local symbols. */ | |
7689 | htab_traverse (htab->loc_hash_table, | |
7690 | elfNN_aarch64_allocate_local_dynrelocs, | |
7691 | info); | |
7692 | ||
7693 | /* Allocate .plt and .got entries, and space for local ifunc symbols. */ | |
7694 | htab_traverse (htab->loc_hash_table, | |
7695 | elfNN_aarch64_allocate_local_ifunc_dynrelocs, | |
7696 | info); | |
a06ea964 NC |
7697 | |
7698 | /* For every jump slot reserved in the sgotplt, reloc_count is | |
7699 | incremented. However, when we reserve space for TLS descriptors, | |
7700 | it's not incremented, so in order to compute the space reserved | |
7701 | for them, it suffices to multiply the reloc count by the jump | |
7702 | slot size. */ | |
7703 | ||
7704 | if (htab->root.srelplt) | |
8847944f | 7705 | htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab); |
a06ea964 NC |
7706 | |
7707 | if (htab->tlsdesc_plt) | |
7708 | { | |
7709 | if (htab->root.splt->size == 0) | |
7710 | htab->root.splt->size += PLT_ENTRY_SIZE; | |
7711 | ||
7712 | htab->tlsdesc_plt = htab->root.splt->size; | |
7713 | htab->root.splt->size += PLT_TLSDESC_ENTRY_SIZE; | |
7714 | ||
7715 | /* If we're not using lazy TLS relocations, don't generate the | |
7716 | GOT entry required. */ | |
7717 | if (!(info->flags & DF_BIND_NOW)) | |
7718 | { | |
7719 | htab->dt_tlsdesc_got = htab->root.sgot->size; | |
7720 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
7721 | } | |
7722 | } | |
7723 | ||
68fcca92 | 7724 | /* Init mapping symbols information to use later to distingush between |
4106101c MS |
7725 | code and data while scanning for errata. */ |
7726 | if (htab->fix_erratum_835769 || htab->fix_erratum_843419) | |
68fcca92 JW |
7727 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
7728 | { | |
7729 | if (!is_aarch64_elf (ibfd)) | |
7730 | continue; | |
7731 | bfd_elfNN_aarch64_init_maps (ibfd); | |
7732 | } | |
7733 | ||
a06ea964 NC |
7734 | /* We now have determined the sizes of the various dynamic sections. |
7735 | Allocate memory for them. */ | |
7736 | relocs = FALSE; | |
7737 | for (s = dynobj->sections; s != NULL; s = s->next) | |
7738 | { | |
7739 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
7740 | continue; | |
7741 | ||
7742 | if (s == htab->root.splt | |
7743 | || s == htab->root.sgot | |
7744 | || s == htab->root.sgotplt | |
7745 | || s == htab->root.iplt | |
7746 | || s == htab->root.igotplt || s == htab->sdynbss) | |
7747 | { | |
7748 | /* Strip this section if we don't need it; see the | |
7749 | comment below. */ | |
7750 | } | |
7751 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) | |
7752 | { | |
7753 | if (s->size != 0 && s != htab->root.srelplt) | |
7754 | relocs = TRUE; | |
7755 | ||
7756 | /* We use the reloc_count field as a counter if we need | |
7757 | to copy relocs into the output file. */ | |
7758 | if (s != htab->root.srelplt) | |
7759 | s->reloc_count = 0; | |
7760 | } | |
7761 | else | |
7762 | { | |
7763 | /* It's not one of our sections, so don't allocate space. */ | |
7764 | continue; | |
7765 | } | |
7766 | ||
7767 | if (s->size == 0) | |
7768 | { | |
7769 | /* If we don't need this section, strip it from the | |
7770 | output file. This is mostly to handle .rela.bss and | |
7771 | .rela.plt. We must create both sections in | |
7772 | create_dynamic_sections, because they must be created | |
7773 | before the linker maps input sections to output | |
7774 | sections. The linker does that before | |
7775 | adjust_dynamic_symbol is called, and it is that | |
7776 | function which decides whether anything needs to go | |
7777 | into these sections. */ | |
7778 | ||
7779 | s->flags |= SEC_EXCLUDE; | |
7780 | continue; | |
7781 | } | |
7782 | ||
7783 | if ((s->flags & SEC_HAS_CONTENTS) == 0) | |
7784 | continue; | |
7785 | ||
7786 | /* Allocate memory for the section contents. We use bfd_zalloc | |
7787 | here in case unused entries are not reclaimed before the | |
7788 | section's contents are written out. This should not happen, | |
7789 | but this way if it does, we get a R_AARCH64_NONE reloc instead | |
7790 | of garbage. */ | |
7791 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
7792 | if (s->contents == NULL) | |
7793 | return FALSE; | |
7794 | } | |
7795 | ||
7796 | if (htab->root.dynamic_sections_created) | |
7797 | { | |
7798 | /* Add some entries to the .dynamic section. We fill in the | |
cec5225b | 7799 | values later, in elfNN_aarch64_finish_dynamic_sections, but we |
a06ea964 NC |
7800 | must add the entries now so that we get the correct size for |
7801 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
7802 | dynamic linker and used by the debugger. */ | |
7803 | #define add_dynamic_entry(TAG, VAL) \ | |
7804 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
7805 | ||
7806 | if (info->executable) | |
7807 | { | |
7808 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
7809 | return FALSE; | |
7810 | } | |
7811 | ||
7812 | if (htab->root.splt->size != 0) | |
7813 | { | |
7814 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
7815 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
7816 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
7817 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
7818 | return FALSE; | |
7819 | ||
7820 | if (htab->tlsdesc_plt | |
7821 | && (!add_dynamic_entry (DT_TLSDESC_PLT, 0) | |
7822 | || !add_dynamic_entry (DT_TLSDESC_GOT, 0))) | |
7823 | return FALSE; | |
7824 | } | |
7825 | ||
7826 | if (relocs) | |
7827 | { | |
7828 | if (!add_dynamic_entry (DT_RELA, 0) | |
7829 | || !add_dynamic_entry (DT_RELASZ, 0) | |
7830 | || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) | |
7831 | return FALSE; | |
7832 | ||
7833 | /* If any dynamic relocs apply to a read-only section, | |
7834 | then we need a DT_TEXTREL entry. */ | |
7835 | if ((info->flags & DF_TEXTREL) != 0) | |
7836 | { | |
7837 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
7838 | return FALSE; | |
7839 | } | |
7840 | } | |
7841 | } | |
7842 | #undef add_dynamic_entry | |
7843 | ||
7844 | return TRUE; | |
a06ea964 NC |
7845 | } |
7846 | ||
7847 | static inline void | |
caed7120 YZ |
7848 | elf_aarch64_update_plt_entry (bfd *output_bfd, |
7849 | bfd_reloc_code_real_type r_type, | |
7850 | bfd_byte *plt_entry, bfd_vma value) | |
a06ea964 | 7851 | { |
caed7120 YZ |
7852 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type); |
7853 | ||
7854 | _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value); | |
a06ea964 NC |
7855 | } |
7856 | ||
7857 | static void | |
cec5225b YZ |
7858 | elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h, |
7859 | struct elf_aarch64_link_hash_table | |
1419bbe5 WN |
7860 | *htab, bfd *output_bfd, |
7861 | struct bfd_link_info *info) | |
a06ea964 NC |
7862 | { |
7863 | bfd_byte *plt_entry; | |
7864 | bfd_vma plt_index; | |
7865 | bfd_vma got_offset; | |
7866 | bfd_vma gotplt_entry_address; | |
7867 | bfd_vma plt_entry_address; | |
7868 | Elf_Internal_Rela rela; | |
7869 | bfd_byte *loc; | |
1419bbe5 WN |
7870 | asection *plt, *gotplt, *relplt; |
7871 | ||
7872 | /* When building a static executable, use .iplt, .igot.plt and | |
7873 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
7874 | if (htab->root.splt != NULL) | |
7875 | { | |
7876 | plt = htab->root.splt; | |
7877 | gotplt = htab->root.sgotplt; | |
7878 | relplt = htab->root.srelplt; | |
7879 | } | |
7880 | else | |
7881 | { | |
7882 | plt = htab->root.iplt; | |
7883 | gotplt = htab->root.igotplt; | |
7884 | relplt = htab->root.irelplt; | |
7885 | } | |
7886 | ||
7887 | /* Get the index in the procedure linkage table which | |
7888 | corresponds to this symbol. This is the index of this symbol | |
7889 | in all the symbols for which we are making plt entries. The | |
7890 | first entry in the procedure linkage table is reserved. | |
a06ea964 | 7891 | |
1419bbe5 WN |
7892 | Get the offset into the .got table of the entry that |
7893 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE | |
7894 | bytes. The first three are reserved for the dynamic linker. | |
692e2b8b | 7895 | |
1419bbe5 WN |
7896 | For static executables, we don't reserve anything. */ |
7897 | ||
7898 | if (plt == htab->root.splt) | |
7899 | { | |
7900 | plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size; | |
7901 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
7902 | } | |
7903 | else | |
7904 | { | |
7905 | plt_index = h->plt.offset / htab->plt_entry_size; | |
7906 | got_offset = plt_index * GOT_ENTRY_SIZE; | |
7907 | } | |
7908 | ||
7909 | plt_entry = plt->contents + h->plt.offset; | |
7910 | plt_entry_address = plt->output_section->vma | |
f44a1f8e | 7911 | + plt->output_offset + h->plt.offset; |
1419bbe5 WN |
7912 | gotplt_entry_address = gotplt->output_section->vma + |
7913 | gotplt->output_offset + got_offset; | |
a06ea964 NC |
7914 | |
7915 | /* Copy in the boiler-plate for the PLTn entry. */ | |
cec5225b | 7916 | memcpy (plt_entry, elfNN_aarch64_small_plt_entry, PLT_SMALL_ENTRY_SIZE); |
a06ea964 NC |
7917 | |
7918 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
7919 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 YZ |
7920 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
7921 | plt_entry, | |
7922 | PG (gotplt_entry_address) - | |
7923 | PG (plt_entry_address)); | |
a06ea964 NC |
7924 | |
7925 | /* Fill in the lo12 bits for the load from the pltgot. */ | |
caed7120 YZ |
7926 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
7927 | plt_entry + 4, | |
7928 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 | 7929 | |
9aff4b7a | 7930 | /* Fill in the lo12 bits for the add from the pltgot entry. */ |
caed7120 YZ |
7931 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
7932 | plt_entry + 8, | |
7933 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 NC |
7934 | |
7935 | /* All the GOTPLT Entries are essentially initialized to PLT0. */ | |
cec5225b | 7936 | bfd_put_NN (output_bfd, |
1419bbe5 WN |
7937 | plt->output_section->vma + plt->output_offset, |
7938 | gotplt->contents + got_offset); | |
a06ea964 | 7939 | |
a06ea964 | 7940 | rela.r_offset = gotplt_entry_address; |
1419bbe5 WN |
7941 | |
7942 | if (h->dynindx == -1 | |
7943 | || ((info->executable | |
7944 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
7945 | && h->def_regular | |
7946 | && h->type == STT_GNU_IFUNC)) | |
7947 | { | |
7948 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
7949 | R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */ | |
7950 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
7951 | rela.r_addend = (h->root.u.def.value | |
7952 | + h->root.u.def.section->output_section->vma | |
7953 | + h->root.u.def.section->output_offset); | |
7954 | } | |
7955 | else | |
7956 | { | |
7957 | /* Fill in the entry in the .rela.plt section. */ | |
7958 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT)); | |
7959 | rela.r_addend = 0; | |
7960 | } | |
a06ea964 NC |
7961 | |
7962 | /* Compute the relocation entry to used based on PLT index and do | |
7963 | not adjust reloc_count. The reloc_count has already been adjusted | |
7964 | to account for this entry. */ | |
1419bbe5 | 7965 | loc = relplt->contents + plt_index * RELOC_SIZE (htab); |
cec5225b | 7966 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
7967 | } |
7968 | ||
7969 | /* Size sections even though they're not dynamic. We use it to setup | |
7970 | _TLS_MODULE_BASE_, if needed. */ | |
7971 | ||
7972 | static bfd_boolean | |
cec5225b | 7973 | elfNN_aarch64_always_size_sections (bfd *output_bfd, |
a06ea964 NC |
7974 | struct bfd_link_info *info) |
7975 | { | |
7976 | asection *tls_sec; | |
7977 | ||
7978 | if (info->relocatable) | |
7979 | return TRUE; | |
7980 | ||
7981 | tls_sec = elf_hash_table (info)->tls_sec; | |
7982 | ||
7983 | if (tls_sec) | |
7984 | { | |
7985 | struct elf_link_hash_entry *tlsbase; | |
7986 | ||
7987 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
7988 | "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE); | |
7989 | ||
7990 | if (tlsbase) | |
7991 | { | |
7992 | struct bfd_link_hash_entry *h = NULL; | |
7993 | const struct elf_backend_data *bed = | |
7994 | get_elf_backend_data (output_bfd); | |
7995 | ||
7996 | if (!(_bfd_generic_link_add_one_symbol | |
7997 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
7998 | tls_sec, 0, NULL, FALSE, bed->collect, &h))) | |
7999 | return FALSE; | |
8000 | ||
8001 | tlsbase->type = STT_TLS; | |
8002 | tlsbase = (struct elf_link_hash_entry *) h; | |
8003 | tlsbase->def_regular = 1; | |
8004 | tlsbase->other = STV_HIDDEN; | |
8005 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
8006 | } | |
8007 | } | |
8008 | ||
8009 | return TRUE; | |
8010 | } | |
8011 | ||
8012 | /* Finish up dynamic symbol handling. We set the contents of various | |
8013 | dynamic sections here. */ | |
8014 | static bfd_boolean | |
cec5225b | 8015 | elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd, |
a06ea964 NC |
8016 | struct bfd_link_info *info, |
8017 | struct elf_link_hash_entry *h, | |
8018 | Elf_Internal_Sym *sym) | |
8019 | { | |
cec5225b YZ |
8020 | struct elf_aarch64_link_hash_table *htab; |
8021 | htab = elf_aarch64_hash_table (info); | |
a06ea964 NC |
8022 | |
8023 | if (h->plt.offset != (bfd_vma) - 1) | |
8024 | { | |
1419bbe5 WN |
8025 | asection *plt, *gotplt, *relplt; |
8026 | ||
a06ea964 NC |
8027 | /* This symbol has an entry in the procedure linkage table. Set |
8028 | it up. */ | |
8029 | ||
1419bbe5 WN |
8030 | /* When building a static executable, use .iplt, .igot.plt and |
8031 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
8032 | if (htab->root.splt != NULL) | |
8033 | { | |
8034 | plt = htab->root.splt; | |
8035 | gotplt = htab->root.sgotplt; | |
8036 | relplt = htab->root.srelplt; | |
8037 | } | |
8038 | else | |
8039 | { | |
8040 | plt = htab->root.iplt; | |
8041 | gotplt = htab->root.igotplt; | |
8042 | relplt = htab->root.irelplt; | |
8043 | } | |
8044 | ||
8045 | /* This symbol has an entry in the procedure linkage table. Set | |
8046 | it up. */ | |
8047 | if ((h->dynindx == -1 | |
8048 | && !((h->forced_local || info->executable) | |
8049 | && h->def_regular | |
8050 | && h->type == STT_GNU_IFUNC)) | |
8051 | || plt == NULL | |
8052 | || gotplt == NULL | |
8053 | || relplt == NULL) | |
a06ea964 NC |
8054 | abort (); |
8055 | ||
1419bbe5 | 8056 | elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info); |
a06ea964 NC |
8057 | if (!h->def_regular) |
8058 | { | |
8059 | /* Mark the symbol as undefined, rather than as defined in | |
46b87d49 | 8060 | the .plt section. */ |
a06ea964 | 8061 | sym->st_shndx = SHN_UNDEF; |
46b87d49 WN |
8062 | /* If the symbol is weak we need to clear the value. |
8063 | Otherwise, the PLT entry would provide a definition for | |
8064 | the symbol even if the symbol wasn't defined anywhere, | |
8065 | and so the symbol would never be NULL. Leave the value if | |
8066 | there were any relocations where pointer equality matters | |
8067 | (this is a clue for the dynamic linker, to make function | |
8068 | pointer comparisons work between an application and shared | |
8069 | library). */ | |
8070 | if (!h->ref_regular_nonweak || !h->pointer_equality_needed) | |
8071 | sym->st_value = 0; | |
a06ea964 NC |
8072 | } |
8073 | } | |
8074 | ||
8075 | if (h->got.offset != (bfd_vma) - 1 | |
cec5225b | 8076 | && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL) |
a06ea964 NC |
8077 | { |
8078 | Elf_Internal_Rela rela; | |
8079 | bfd_byte *loc; | |
8080 | ||
8081 | /* This symbol has an entry in the global offset table. Set it | |
8082 | up. */ | |
8083 | if (htab->root.sgot == NULL || htab->root.srelgot == NULL) | |
8084 | abort (); | |
8085 | ||
8086 | rela.r_offset = (htab->root.sgot->output_section->vma | |
8087 | + htab->root.sgot->output_offset | |
8088 | + (h->got.offset & ~(bfd_vma) 1)); | |
8089 | ||
49206388 WN |
8090 | if (h->def_regular |
8091 | && h->type == STT_GNU_IFUNC) | |
8092 | { | |
8093 | if (info->shared) | |
8094 | { | |
8095 | /* Generate R_AARCH64_GLOB_DAT. */ | |
8096 | goto do_glob_dat; | |
8097 | } | |
8098 | else | |
8099 | { | |
8100 | asection *plt; | |
8101 | ||
8102 | if (!h->pointer_equality_needed) | |
8103 | abort (); | |
8104 | ||
8105 | /* For non-shared object, we can't use .got.plt, which | |
8106 | contains the real function address if we need pointer | |
8107 | equality. We load the GOT entry with the PLT entry. */ | |
8108 | plt = htab->root.splt ? htab->root.splt : htab->root.iplt; | |
8109 | bfd_put_NN (output_bfd, (plt->output_section->vma | |
8110 | + plt->output_offset | |
8111 | + h->plt.offset), | |
8112 | htab->root.sgot->contents | |
8113 | + (h->got.offset & ~(bfd_vma) 1)); | |
8114 | return TRUE; | |
8115 | } | |
8116 | } | |
8117 | else if (info->shared && SYMBOL_REFERENCES_LOCAL (info, h)) | |
a06ea964 NC |
8118 | { |
8119 | if (!h->def_regular) | |
8120 | return FALSE; | |
8121 | ||
8122 | BFD_ASSERT ((h->got.offset & 1) != 0); | |
a6bb11b2 | 8123 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); |
a06ea964 NC |
8124 | rela.r_addend = (h->root.u.def.value |
8125 | + h->root.u.def.section->output_section->vma | |
8126 | + h->root.u.def.section->output_offset); | |
8127 | } | |
8128 | else | |
8129 | { | |
49206388 | 8130 | do_glob_dat: |
a06ea964 | 8131 | BFD_ASSERT ((h->got.offset & 1) == 0); |
cec5225b | 8132 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 | 8133 | htab->root.sgot->contents + h->got.offset); |
a6bb11b2 | 8134 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT)); |
a06ea964 NC |
8135 | rela.r_addend = 0; |
8136 | } | |
8137 | ||
8138 | loc = htab->root.srelgot->contents; | |
8139 | loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 8140 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
8141 | } |
8142 | ||
8143 | if (h->needs_copy) | |
8144 | { | |
8145 | Elf_Internal_Rela rela; | |
8146 | bfd_byte *loc; | |
8147 | ||
8148 | /* This symbol needs a copy reloc. Set it up. */ | |
8149 | ||
8150 | if (h->dynindx == -1 | |
8151 | || (h->root.type != bfd_link_hash_defined | |
8152 | && h->root.type != bfd_link_hash_defweak) | |
8153 | || htab->srelbss == NULL) | |
8154 | abort (); | |
8155 | ||
8156 | rela.r_offset = (h->root.u.def.value | |
8157 | + h->root.u.def.section->output_section->vma | |
8158 | + h->root.u.def.section->output_offset); | |
a6bb11b2 | 8159 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY)); |
a06ea964 NC |
8160 | rela.r_addend = 0; |
8161 | loc = htab->srelbss->contents; | |
8162 | loc += htab->srelbss->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 8163 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
8164 | } |
8165 | ||
8166 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may | |
8167 | be NULL for local symbols. */ | |
8168 | if (sym != NULL | |
9637f6ef | 8169 | && (h == elf_hash_table (info)->hdynamic |
a06ea964 NC |
8170 | || h == elf_hash_table (info)->hgot)) |
8171 | sym->st_shndx = SHN_ABS; | |
8172 | ||
8173 | return TRUE; | |
8174 | } | |
8175 | ||
1419bbe5 WN |
8176 | /* Finish up local dynamic symbol handling. We set the contents of |
8177 | various dynamic sections here. */ | |
8178 | ||
8179 | static bfd_boolean | |
8180 | elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf) | |
8181 | { | |
8182 | struct elf_link_hash_entry *h | |
8183 | = (struct elf_link_hash_entry *) *slot; | |
8184 | struct bfd_link_info *info | |
8185 | = (struct bfd_link_info *) inf; | |
8186 | ||
8187 | return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd, | |
8188 | info, h, NULL); | |
8189 | } | |
8190 | ||
a06ea964 | 8191 | static void |
cec5225b YZ |
8192 | elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED, |
8193 | struct elf_aarch64_link_hash_table | |
a06ea964 NC |
8194 | *htab) |
8195 | { | |
8196 | /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between | |
8197 | small and large plts and at the minute just generates | |
8198 | the small PLT. */ | |
8199 | ||
cec5225b | 8200 | /* PLT0 of the small PLT looks like this in ELF64 - |
a06ea964 NC |
8201 | stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack. |
8202 | adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT | |
8203 | ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the | |
8204 | // symbol resolver | |
8205 | add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the | |
8206 | // GOTPLT entry for this. | |
8207 | br x17 | |
cec5225b YZ |
8208 | PLT0 will be slightly different in ELF32 due to different got entry |
8209 | size. | |
a06ea964 | 8210 | */ |
caed7120 | 8211 | bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */ |
a06ea964 NC |
8212 | bfd_vma plt_base; |
8213 | ||
8214 | ||
cec5225b | 8215 | memcpy (htab->root.splt->contents, elfNN_aarch64_small_plt0_entry, |
a06ea964 NC |
8216 | PLT_ENTRY_SIZE); |
8217 | elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize = | |
8218 | PLT_ENTRY_SIZE; | |
8219 | ||
caed7120 YZ |
8220 | plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma |
8221 | + htab->root.sgotplt->output_offset | |
8222 | + GOT_ENTRY_SIZE * 2); | |
a06ea964 NC |
8223 | |
8224 | plt_base = htab->root.splt->output_section->vma + | |
f44a1f8e | 8225 | htab->root.splt->output_offset; |
a06ea964 NC |
8226 | |
8227 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
8228 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 YZ |
8229 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
8230 | htab->root.splt->contents + 4, | |
8231 | PG (plt_got_2nd_ent) - PG (plt_base + 4)); | |
a06ea964 | 8232 | |
caed7120 YZ |
8233 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
8234 | htab->root.splt->contents + 8, | |
8235 | PG_OFFSET (plt_got_2nd_ent)); | |
a06ea964 | 8236 | |
caed7120 YZ |
8237 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
8238 | htab->root.splt->contents + 12, | |
8239 | PG_OFFSET (plt_got_2nd_ent)); | |
a06ea964 NC |
8240 | } |
8241 | ||
8242 | static bfd_boolean | |
cec5225b | 8243 | elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd, |
a06ea964 NC |
8244 | struct bfd_link_info *info) |
8245 | { | |
cec5225b | 8246 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
8247 | bfd *dynobj; |
8248 | asection *sdyn; | |
8249 | ||
cec5225b | 8250 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
8251 | dynobj = htab->root.dynobj; |
8252 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); | |
8253 | ||
8254 | if (htab->root.dynamic_sections_created) | |
8255 | { | |
cec5225b | 8256 | ElfNN_External_Dyn *dyncon, *dynconend; |
a06ea964 NC |
8257 | |
8258 | if (sdyn == NULL || htab->root.sgot == NULL) | |
8259 | abort (); | |
8260 | ||
cec5225b YZ |
8261 | dyncon = (ElfNN_External_Dyn *) sdyn->contents; |
8262 | dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size); | |
a06ea964 NC |
8263 | for (; dyncon < dynconend; dyncon++) |
8264 | { | |
8265 | Elf_Internal_Dyn dyn; | |
8266 | asection *s; | |
8267 | ||
cec5225b | 8268 | bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn); |
a06ea964 NC |
8269 | |
8270 | switch (dyn.d_tag) | |
8271 | { | |
8272 | default: | |
8273 | continue; | |
8274 | ||
8275 | case DT_PLTGOT: | |
8276 | s = htab->root.sgotplt; | |
8277 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
8278 | break; | |
8279 | ||
8280 | case DT_JMPREL: | |
8281 | dyn.d_un.d_ptr = htab->root.srelplt->output_section->vma; | |
8282 | break; | |
8283 | ||
8284 | case DT_PLTRELSZ: | |
c955de36 | 8285 | s = htab->root.srelplt; |
a06ea964 NC |
8286 | dyn.d_un.d_val = s->size; |
8287 | break; | |
8288 | ||
8289 | case DT_RELASZ: | |
8290 | /* The procedure linkage table relocs (DT_JMPREL) should | |
8291 | not be included in the overall relocs (DT_RELA). | |
8292 | Therefore, we override the DT_RELASZ entry here to | |
8293 | make it not include the JMPREL relocs. Since the | |
8294 | linker script arranges for .rela.plt to follow all | |
8295 | other relocation sections, we don't have to worry | |
8296 | about changing the DT_RELA entry. */ | |
8297 | if (htab->root.srelplt != NULL) | |
8298 | { | |
c955de36 | 8299 | s = htab->root.srelplt; |
a06ea964 NC |
8300 | dyn.d_un.d_val -= s->size; |
8301 | } | |
8302 | break; | |
8303 | ||
8304 | case DT_TLSDESC_PLT: | |
8305 | s = htab->root.splt; | |
8306 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
8307 | + htab->tlsdesc_plt; | |
8308 | break; | |
8309 | ||
8310 | case DT_TLSDESC_GOT: | |
8311 | s = htab->root.sgot; | |
8312 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
8313 | + htab->dt_tlsdesc_got; | |
8314 | break; | |
8315 | } | |
8316 | ||
cec5225b | 8317 | bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon); |
a06ea964 NC |
8318 | } |
8319 | ||
8320 | } | |
8321 | ||
8322 | /* Fill in the special first entry in the procedure linkage table. */ | |
8323 | if (htab->root.splt && htab->root.splt->size > 0) | |
8324 | { | |
cec5225b | 8325 | elfNN_aarch64_init_small_plt0_entry (output_bfd, htab); |
a06ea964 NC |
8326 | |
8327 | elf_section_data (htab->root.splt->output_section)-> | |
8328 | this_hdr.sh_entsize = htab->plt_entry_size; | |
8329 | ||
8330 | ||
8331 | if (htab->tlsdesc_plt) | |
8332 | { | |
cec5225b | 8333 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
8334 | htab->root.sgot->contents + htab->dt_tlsdesc_got); |
8335 | ||
8336 | memcpy (htab->root.splt->contents + htab->tlsdesc_plt, | |
cec5225b YZ |
8337 | elfNN_aarch64_tlsdesc_small_plt_entry, |
8338 | sizeof (elfNN_aarch64_tlsdesc_small_plt_entry)); | |
a06ea964 NC |
8339 | |
8340 | { | |
8341 | bfd_vma adrp1_addr = | |
8342 | htab->root.splt->output_section->vma | |
8343 | + htab->root.splt->output_offset + htab->tlsdesc_plt + 4; | |
8344 | ||
caed7120 | 8345 | bfd_vma adrp2_addr = adrp1_addr + 4; |
a06ea964 NC |
8346 | |
8347 | bfd_vma got_addr = | |
8348 | htab->root.sgot->output_section->vma | |
8349 | + htab->root.sgot->output_offset; | |
8350 | ||
8351 | bfd_vma pltgot_addr = | |
8352 | htab->root.sgotplt->output_section->vma | |
8353 | + htab->root.sgotplt->output_offset; | |
8354 | ||
8355 | bfd_vma dt_tlsdesc_got = got_addr + htab->dt_tlsdesc_got; | |
caed7120 YZ |
8356 | |
8357 | bfd_byte *plt_entry = | |
8358 | htab->root.splt->contents + htab->tlsdesc_plt; | |
a06ea964 NC |
8359 | |
8360 | /* adrp x2, DT_TLSDESC_GOT */ | |
caed7120 YZ |
8361 | elf_aarch64_update_plt_entry (output_bfd, |
8362 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
8363 | plt_entry + 4, | |
8364 | (PG (dt_tlsdesc_got) | |
8365 | - PG (adrp1_addr))); | |
a06ea964 NC |
8366 | |
8367 | /* adrp x3, 0 */ | |
caed7120 YZ |
8368 | elf_aarch64_update_plt_entry (output_bfd, |
8369 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
8370 | plt_entry + 8, | |
8371 | (PG (pltgot_addr) | |
8372 | - PG (adrp2_addr))); | |
a06ea964 NC |
8373 | |
8374 | /* ldr x2, [x2, #0] */ | |
caed7120 YZ |
8375 | elf_aarch64_update_plt_entry (output_bfd, |
8376 | BFD_RELOC_AARCH64_LDSTNN_LO12, | |
8377 | plt_entry + 12, | |
8378 | PG_OFFSET (dt_tlsdesc_got)); | |
a06ea964 NC |
8379 | |
8380 | /* add x3, x3, 0 */ | |
caed7120 YZ |
8381 | elf_aarch64_update_plt_entry (output_bfd, |
8382 | BFD_RELOC_AARCH64_ADD_LO12, | |
8383 | plt_entry + 16, | |
8384 | PG_OFFSET (pltgot_addr)); | |
a06ea964 NC |
8385 | } |
8386 | } | |
8387 | } | |
8388 | ||
8389 | if (htab->root.sgotplt) | |
8390 | { | |
8391 | if (bfd_is_abs_section (htab->root.sgotplt->output_section)) | |
8392 | { | |
8393 | (*_bfd_error_handler) | |
8394 | (_("discarded output section: `%A'"), htab->root.sgotplt); | |
8395 | return FALSE; | |
8396 | } | |
8397 | ||
8398 | /* Fill in the first three entries in the global offset table. */ | |
8399 | if (htab->root.sgotplt->size > 0) | |
8400 | { | |
8db339a6 MS |
8401 | bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents); |
8402 | ||
a06ea964 | 8403 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ |
cec5225b | 8404 | bfd_put_NN (output_bfd, |
a06ea964 NC |
8405 | (bfd_vma) 0, |
8406 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE); | |
cec5225b | 8407 | bfd_put_NN (output_bfd, |
a06ea964 NC |
8408 | (bfd_vma) 0, |
8409 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2); | |
8410 | } | |
8411 | ||
8db339a6 MS |
8412 | if (htab->root.sgot) |
8413 | { | |
8414 | if (htab->root.sgot->size > 0) | |
8415 | { | |
8416 | bfd_vma addr = | |
8417 | sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0; | |
8418 | bfd_put_NN (output_bfd, addr, htab->root.sgot->contents); | |
8419 | } | |
8420 | } | |
8421 | ||
a06ea964 NC |
8422 | elf_section_data (htab->root.sgotplt->output_section)-> |
8423 | this_hdr.sh_entsize = GOT_ENTRY_SIZE; | |
8424 | } | |
8425 | ||
8426 | if (htab->root.sgot && htab->root.sgot->size > 0) | |
8427 | elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize | |
8428 | = GOT_ENTRY_SIZE; | |
8429 | ||
1419bbe5 WN |
8430 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
8431 | htab_traverse (htab->loc_hash_table, | |
8432 | elfNN_aarch64_finish_local_dynamic_symbol, | |
8433 | info); | |
8434 | ||
a06ea964 NC |
8435 | return TRUE; |
8436 | } | |
8437 | ||
8438 | /* Return address for Ith PLT stub in section PLT, for relocation REL | |
8439 | or (bfd_vma) -1 if it should not be included. */ | |
8440 | ||
8441 | static bfd_vma | |
cec5225b | 8442 | elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt, |
a06ea964 NC |
8443 | const arelent *rel ATTRIBUTE_UNUSED) |
8444 | { | |
8445 | return plt->vma + PLT_ENTRY_SIZE + i * PLT_SMALL_ENTRY_SIZE; | |
8446 | } | |
8447 | ||
8448 | ||
8449 | /* We use this so we can override certain functions | |
8450 | (though currently we don't). */ | |
8451 | ||
cec5225b | 8452 | const struct elf_size_info elfNN_aarch64_size_info = |
a06ea964 | 8453 | { |
cec5225b YZ |
8454 | sizeof (ElfNN_External_Ehdr), |
8455 | sizeof (ElfNN_External_Phdr), | |
8456 | sizeof (ElfNN_External_Shdr), | |
8457 | sizeof (ElfNN_External_Rel), | |
8458 | sizeof (ElfNN_External_Rela), | |
8459 | sizeof (ElfNN_External_Sym), | |
8460 | sizeof (ElfNN_External_Dyn), | |
a06ea964 NC |
8461 | sizeof (Elf_External_Note), |
8462 | 4, /* Hash table entry size. */ | |
8463 | 1, /* Internal relocs per external relocs. */ | |
cec5225b YZ |
8464 | ARCH_SIZE, /* Arch size. */ |
8465 | LOG_FILE_ALIGN, /* Log_file_align. */ | |
8466 | ELFCLASSNN, EV_CURRENT, | |
8467 | bfd_elfNN_write_out_phdrs, | |
8468 | bfd_elfNN_write_shdrs_and_ehdr, | |
8469 | bfd_elfNN_checksum_contents, | |
8470 | bfd_elfNN_write_relocs, | |
8471 | bfd_elfNN_swap_symbol_in, | |
8472 | bfd_elfNN_swap_symbol_out, | |
8473 | bfd_elfNN_slurp_reloc_table, | |
8474 | bfd_elfNN_slurp_symbol_table, | |
8475 | bfd_elfNN_swap_dyn_in, | |
8476 | bfd_elfNN_swap_dyn_out, | |
8477 | bfd_elfNN_swap_reloc_in, | |
8478 | bfd_elfNN_swap_reloc_out, | |
8479 | bfd_elfNN_swap_reloca_in, | |
8480 | bfd_elfNN_swap_reloca_out | |
a06ea964 NC |
8481 | }; |
8482 | ||
8483 | #define ELF_ARCH bfd_arch_aarch64 | |
8484 | #define ELF_MACHINE_CODE EM_AARCH64 | |
8485 | #define ELF_MAXPAGESIZE 0x10000 | |
8486 | #define ELF_MINPAGESIZE 0x1000 | |
8487 | #define ELF_COMMONPAGESIZE 0x1000 | |
8488 | ||
cec5225b YZ |
8489 | #define bfd_elfNN_close_and_cleanup \ |
8490 | elfNN_aarch64_close_and_cleanup | |
a06ea964 | 8491 | |
cec5225b YZ |
8492 | #define bfd_elfNN_bfd_free_cached_info \ |
8493 | elfNN_aarch64_bfd_free_cached_info | |
a06ea964 | 8494 | |
cec5225b YZ |
8495 | #define bfd_elfNN_bfd_is_target_special_symbol \ |
8496 | elfNN_aarch64_is_target_special_symbol | |
a06ea964 | 8497 | |
cec5225b YZ |
8498 | #define bfd_elfNN_bfd_link_hash_table_create \ |
8499 | elfNN_aarch64_link_hash_table_create | |
a06ea964 | 8500 | |
cec5225b YZ |
8501 | #define bfd_elfNN_bfd_merge_private_bfd_data \ |
8502 | elfNN_aarch64_merge_private_bfd_data | |
a06ea964 | 8503 | |
cec5225b YZ |
8504 | #define bfd_elfNN_bfd_print_private_bfd_data \ |
8505 | elfNN_aarch64_print_private_bfd_data | |
a06ea964 | 8506 | |
cec5225b YZ |
8507 | #define bfd_elfNN_bfd_reloc_type_lookup \ |
8508 | elfNN_aarch64_reloc_type_lookup | |
a06ea964 | 8509 | |
cec5225b YZ |
8510 | #define bfd_elfNN_bfd_reloc_name_lookup \ |
8511 | elfNN_aarch64_reloc_name_lookup | |
a06ea964 | 8512 | |
cec5225b YZ |
8513 | #define bfd_elfNN_bfd_set_private_flags \ |
8514 | elfNN_aarch64_set_private_flags | |
a06ea964 | 8515 | |
cec5225b YZ |
8516 | #define bfd_elfNN_find_inliner_info \ |
8517 | elfNN_aarch64_find_inliner_info | |
a06ea964 | 8518 | |
cec5225b YZ |
8519 | #define bfd_elfNN_find_nearest_line \ |
8520 | elfNN_aarch64_find_nearest_line | |
a06ea964 | 8521 | |
cec5225b YZ |
8522 | #define bfd_elfNN_mkobject \ |
8523 | elfNN_aarch64_mkobject | |
a06ea964 | 8524 | |
cec5225b YZ |
8525 | #define bfd_elfNN_new_section_hook \ |
8526 | elfNN_aarch64_new_section_hook | |
a06ea964 NC |
8527 | |
8528 | #define elf_backend_adjust_dynamic_symbol \ | |
cec5225b | 8529 | elfNN_aarch64_adjust_dynamic_symbol |
a06ea964 NC |
8530 | |
8531 | #define elf_backend_always_size_sections \ | |
cec5225b | 8532 | elfNN_aarch64_always_size_sections |
a06ea964 NC |
8533 | |
8534 | #define elf_backend_check_relocs \ | |
cec5225b | 8535 | elfNN_aarch64_check_relocs |
a06ea964 NC |
8536 | |
8537 | #define elf_backend_copy_indirect_symbol \ | |
cec5225b | 8538 | elfNN_aarch64_copy_indirect_symbol |
a06ea964 NC |
8539 | |
8540 | /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts | |
8541 | to them in our hash. */ | |
8542 | #define elf_backend_create_dynamic_sections \ | |
cec5225b | 8543 | elfNN_aarch64_create_dynamic_sections |
a06ea964 NC |
8544 | |
8545 | #define elf_backend_init_index_section \ | |
8546 | _bfd_elf_init_2_index_sections | |
8547 | ||
a06ea964 | 8548 | #define elf_backend_finish_dynamic_sections \ |
cec5225b | 8549 | elfNN_aarch64_finish_dynamic_sections |
a06ea964 NC |
8550 | |
8551 | #define elf_backend_finish_dynamic_symbol \ | |
cec5225b | 8552 | elfNN_aarch64_finish_dynamic_symbol |
a06ea964 NC |
8553 | |
8554 | #define elf_backend_gc_sweep_hook \ | |
cec5225b | 8555 | elfNN_aarch64_gc_sweep_hook |
a06ea964 NC |
8556 | |
8557 | #define elf_backend_object_p \ | |
cec5225b | 8558 | elfNN_aarch64_object_p |
a06ea964 NC |
8559 | |
8560 | #define elf_backend_output_arch_local_syms \ | |
cec5225b | 8561 | elfNN_aarch64_output_arch_local_syms |
a06ea964 NC |
8562 | |
8563 | #define elf_backend_plt_sym_val \ | |
cec5225b | 8564 | elfNN_aarch64_plt_sym_val |
a06ea964 NC |
8565 | |
8566 | #define elf_backend_post_process_headers \ | |
cec5225b | 8567 | elfNN_aarch64_post_process_headers |
a06ea964 NC |
8568 | |
8569 | #define elf_backend_relocate_section \ | |
cec5225b | 8570 | elfNN_aarch64_relocate_section |
a06ea964 NC |
8571 | |
8572 | #define elf_backend_reloc_type_class \ | |
cec5225b | 8573 | elfNN_aarch64_reloc_type_class |
a06ea964 | 8574 | |
a06ea964 | 8575 | #define elf_backend_section_from_shdr \ |
cec5225b | 8576 | elfNN_aarch64_section_from_shdr |
a06ea964 NC |
8577 | |
8578 | #define elf_backend_size_dynamic_sections \ | |
cec5225b | 8579 | elfNN_aarch64_size_dynamic_sections |
a06ea964 NC |
8580 | |
8581 | #define elf_backend_size_info \ | |
cec5225b | 8582 | elfNN_aarch64_size_info |
a06ea964 | 8583 | |
68fcca92 JW |
8584 | #define elf_backend_write_section \ |
8585 | elfNN_aarch64_write_section | |
8586 | ||
a06ea964 | 8587 | #define elf_backend_can_refcount 1 |
59c108f7 | 8588 | #define elf_backend_can_gc_sections 1 |
a06ea964 NC |
8589 | #define elf_backend_plt_readonly 1 |
8590 | #define elf_backend_want_got_plt 1 | |
8591 | #define elf_backend_want_plt_sym 0 | |
8592 | #define elf_backend_may_use_rel_p 0 | |
8593 | #define elf_backend_may_use_rela_p 1 | |
8594 | #define elf_backend_default_use_rela_p 1 | |
2e0488d3 | 8595 | #define elf_backend_rela_normal 1 |
a06ea964 | 8596 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3) |
c495064d | 8597 | #define elf_backend_default_execstack 0 |
a06ea964 NC |
8598 | |
8599 | #undef elf_backend_obj_attrs_section | |
8600 | #define elf_backend_obj_attrs_section ".ARM.attributes" | |
8601 | ||
cec5225b | 8602 | #include "elfNN-target.h" |