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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 | |
3d715ce4 JW |
851 | /* LD32: GOT offset to the page address of GOT table. |
852 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x5ffc. */ | |
853 | HOWTO32 (AARCH64_R (LD32_GOTPAGE_LO14), /* type */ | |
854 | 2, /* rightshift */ | |
855 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
856 | 12, /* bitsize */ | |
857 | FALSE, /* pc_relative */ | |
858 | 0, /* bitpos */ | |
859 | complain_overflow_unsigned, /* complain_on_overflow */ | |
860 | bfd_elf_generic_reloc, /* special_function */ | |
861 | AARCH64_R_STR (LD32_GOTPAGE_LO14), /* name */ | |
862 | FALSE, /* partial_inplace */ | |
863 | 0x5ffc, /* src_mask */ | |
864 | 0x5ffc, /* dst_mask */ | |
865 | FALSE), /* pcrel_offset */ | |
866 | ||
a921b5bd JW |
867 | /* LD64: GOT offset to the page address of GOT table. |
868 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */ | |
869 | HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15), /* type */ | |
870 | 3, /* rightshift */ | |
871 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
872 | 12, /* bitsize */ | |
873 | FALSE, /* pc_relative */ | |
874 | 0, /* bitpos */ | |
875 | complain_overflow_unsigned, /* complain_on_overflow */ | |
876 | bfd_elf_generic_reloc, /* special_function */ | |
877 | AARCH64_R_STR (LD64_GOTPAGE_LO15), /* name */ | |
878 | FALSE, /* partial_inplace */ | |
879 | 0x7ff8, /* src_mask */ | |
880 | 0x7ff8, /* dst_mask */ | |
881 | FALSE), /* pcrel_offset */ | |
882 | ||
a06ea964 NC |
883 | /* Get to the page for the GOT entry for the symbol |
884 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 885 | HOWTO (AARCH64_R (TLSGD_ADR_PAGE21), /* type */ |
a06ea964 NC |
886 | 12, /* rightshift */ |
887 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
888 | 21, /* bitsize */ | |
889 | TRUE, /* pc_relative */ | |
890 | 0, /* bitpos */ | |
891 | complain_overflow_dont, /* complain_on_overflow */ | |
892 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 893 | AARCH64_R_STR (TLSGD_ADR_PAGE21), /* name */ |
a06ea964 NC |
894 | FALSE, /* partial_inplace */ |
895 | 0x1fffff, /* src_mask */ | |
896 | 0x1fffff, /* dst_mask */ | |
897 | TRUE), /* pcrel_offset */ | |
898 | ||
3c12b054 MS |
899 | HOWTO (AARCH64_R (TLSGD_ADR_PREL21), /* type */ |
900 | 0, /* rightshift */ | |
901 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
902 | 21, /* bitsize */ | |
903 | TRUE, /* pc_relative */ | |
904 | 0, /* bitpos */ | |
905 | complain_overflow_dont, /* complain_on_overflow */ | |
906 | bfd_elf_generic_reloc, /* special_function */ | |
907 | AARCH64_R_STR (TLSGD_ADR_PREL21), /* name */ | |
908 | FALSE, /* partial_inplace */ | |
909 | 0x1fffff, /* src_mask */ | |
910 | 0x1fffff, /* dst_mask */ | |
911 | TRUE), /* pcrel_offset */ | |
912 | ||
a06ea964 | 913 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ |
a6bb11b2 | 914 | HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC), /* type */ |
a06ea964 NC |
915 | 0, /* rightshift */ |
916 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
917 | 12, /* bitsize */ | |
918 | FALSE, /* pc_relative */ | |
919 | 0, /* bitpos */ | |
920 | complain_overflow_dont, /* complain_on_overflow */ | |
921 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 922 | AARCH64_R_STR (TLSGD_ADD_LO12_NC), /* name */ |
a06ea964 NC |
923 | FALSE, /* partial_inplace */ |
924 | 0xfff, /* src_mask */ | |
925 | 0xfff, /* dst_mask */ | |
926 | FALSE), /* pcrel_offset */ | |
927 | ||
a6bb11b2 | 928 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1), /* type */ |
a06ea964 NC |
929 | 16, /* rightshift */ |
930 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
931 | 16, /* bitsize */ | |
932 | FALSE, /* pc_relative */ | |
933 | 0, /* bitpos */ | |
934 | complain_overflow_dont, /* complain_on_overflow */ | |
935 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 936 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1), /* name */ |
a06ea964 NC |
937 | FALSE, /* partial_inplace */ |
938 | 0xffff, /* src_mask */ | |
939 | 0xffff, /* dst_mask */ | |
940 | FALSE), /* pcrel_offset */ | |
941 | ||
a6bb11b2 | 942 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */ |
a06ea964 NC |
943 | 0, /* rightshift */ |
944 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
49d8f92c | 945 | 16, /* bitsize */ |
a06ea964 NC |
946 | FALSE, /* pc_relative */ |
947 | 0, /* bitpos */ | |
948 | complain_overflow_dont, /* complain_on_overflow */ | |
949 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 950 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC), /* name */ |
a06ea964 NC |
951 | FALSE, /* partial_inplace */ |
952 | 0xffff, /* src_mask */ | |
953 | 0xffff, /* dst_mask */ | |
954 | FALSE), /* pcrel_offset */ | |
955 | ||
a6bb11b2 | 956 | HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21), /* type */ |
a06ea964 NC |
957 | 12, /* rightshift */ |
958 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
959 | 21, /* bitsize */ | |
960 | FALSE, /* pc_relative */ | |
961 | 0, /* bitpos */ | |
962 | complain_overflow_dont, /* complain_on_overflow */ | |
963 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 964 | AARCH64_R_STR (TLSIE_ADR_GOTTPREL_PAGE21), /* name */ |
a06ea964 NC |
965 | FALSE, /* partial_inplace */ |
966 | 0x1fffff, /* src_mask */ | |
967 | 0x1fffff, /* dst_mask */ | |
968 | FALSE), /* pcrel_offset */ | |
969 | ||
a6bb11b2 | 970 | HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC), /* type */ |
a06ea964 NC |
971 | 3, /* rightshift */ |
972 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
973 | 12, /* bitsize */ | |
974 | FALSE, /* pc_relative */ | |
975 | 0, /* bitpos */ | |
976 | complain_overflow_dont, /* complain_on_overflow */ | |
977 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 978 | AARCH64_R_STR (TLSIE_LD64_GOTTPREL_LO12_NC), /* name */ |
a06ea964 NC |
979 | FALSE, /* partial_inplace */ |
980 | 0xff8, /* src_mask */ | |
981 | 0xff8, /* dst_mask */ | |
982 | FALSE), /* pcrel_offset */ | |
983 | ||
a6bb11b2 YZ |
984 | HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC), /* type */ |
985 | 2, /* rightshift */ | |
986 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
987 | 12, /* bitsize */ | |
988 | FALSE, /* pc_relative */ | |
989 | 0, /* bitpos */ | |
990 | complain_overflow_dont, /* complain_on_overflow */ | |
991 | bfd_elf_generic_reloc, /* special_function */ | |
992 | AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC), /* name */ | |
993 | FALSE, /* partial_inplace */ | |
994 | 0xffc, /* src_mask */ | |
995 | 0xffc, /* dst_mask */ | |
996 | FALSE), /* pcrel_offset */ | |
997 | ||
998 | HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19), /* type */ | |
bb3f9ed8 | 999 | 2, /* rightshift */ |
a06ea964 | 1000 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
043bf05a | 1001 | 19, /* bitsize */ |
a06ea964 NC |
1002 | FALSE, /* pc_relative */ |
1003 | 0, /* bitpos */ | |
1004 | complain_overflow_dont, /* complain_on_overflow */ | |
1005 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1006 | AARCH64_R_STR (TLSIE_LD_GOTTPREL_PREL19), /* name */ |
a06ea964 NC |
1007 | FALSE, /* partial_inplace */ |
1008 | 0x1ffffc, /* src_mask */ | |
1009 | 0x1ffffc, /* dst_mask */ | |
1010 | FALSE), /* pcrel_offset */ | |
1011 | ||
a6bb11b2 | 1012 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2), /* type */ |
bb3f9ed8 | 1013 | 32, /* rightshift */ |
a06ea964 | 1014 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1015 | 16, /* bitsize */ |
a06ea964 NC |
1016 | FALSE, /* pc_relative */ |
1017 | 0, /* bitpos */ | |
0172429c | 1018 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1019 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1020 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G2), /* name */ |
a06ea964 NC |
1021 | FALSE, /* partial_inplace */ |
1022 | 0xffff, /* src_mask */ | |
1023 | 0xffff, /* dst_mask */ | |
1024 | FALSE), /* pcrel_offset */ | |
1025 | ||
a6bb11b2 | 1026 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1), /* type */ |
bb3f9ed8 | 1027 | 16, /* rightshift */ |
a06ea964 | 1028 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1029 | 16, /* bitsize */ |
a06ea964 NC |
1030 | FALSE, /* pc_relative */ |
1031 | 0, /* bitpos */ | |
1032 | complain_overflow_dont, /* complain_on_overflow */ | |
1033 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1034 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1), /* name */ |
a06ea964 NC |
1035 | FALSE, /* partial_inplace */ |
1036 | 0xffff, /* src_mask */ | |
1037 | 0xffff, /* dst_mask */ | |
1038 | FALSE), /* pcrel_offset */ | |
1039 | ||
a6bb11b2 | 1040 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */ |
bb3f9ed8 | 1041 | 16, /* rightshift */ |
a06ea964 | 1042 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1043 | 16, /* bitsize */ |
a06ea964 NC |
1044 | FALSE, /* pc_relative */ |
1045 | 0, /* bitpos */ | |
1046 | complain_overflow_dont, /* complain_on_overflow */ | |
1047 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1048 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC), /* name */ |
a06ea964 NC |
1049 | FALSE, /* partial_inplace */ |
1050 | 0xffff, /* src_mask */ | |
1051 | 0xffff, /* dst_mask */ | |
1052 | FALSE), /* pcrel_offset */ | |
1053 | ||
a6bb11b2 | 1054 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0), /* type */ |
a06ea964 NC |
1055 | 0, /* rightshift */ |
1056 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
07875fbc | 1057 | 16, /* bitsize */ |
a06ea964 NC |
1058 | FALSE, /* pc_relative */ |
1059 | 0, /* bitpos */ | |
1060 | complain_overflow_dont, /* complain_on_overflow */ | |
1061 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1062 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0), /* name */ |
a06ea964 NC |
1063 | FALSE, /* partial_inplace */ |
1064 | 0xffff, /* src_mask */ | |
1065 | 0xffff, /* dst_mask */ | |
1066 | FALSE), /* pcrel_offset */ | |
1067 | ||
a6bb11b2 | 1068 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC), /* type */ |
a06ea964 NC |
1069 | 0, /* rightshift */ |
1070 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
07875fbc | 1071 | 16, /* bitsize */ |
a06ea964 NC |
1072 | FALSE, /* pc_relative */ |
1073 | 0, /* bitpos */ | |
1074 | complain_overflow_dont, /* complain_on_overflow */ | |
1075 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1076 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC), /* name */ |
a06ea964 NC |
1077 | FALSE, /* partial_inplace */ |
1078 | 0xffff, /* src_mask */ | |
1079 | 0xffff, /* dst_mask */ | |
1080 | FALSE), /* pcrel_offset */ | |
1081 | ||
a6bb11b2 | 1082 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12), /* type */ |
bb3f9ed8 | 1083 | 12, /* rightshift */ |
a06ea964 NC |
1084 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1085 | 12, /* bitsize */ | |
1086 | FALSE, /* pc_relative */ | |
1087 | 0, /* bitpos */ | |
bab91cce | 1088 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1089 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1090 | AARCH64_R_STR (TLSLE_ADD_TPREL_HI12), /* name */ |
a06ea964 NC |
1091 | FALSE, /* partial_inplace */ |
1092 | 0xfff, /* src_mask */ | |
1093 | 0xfff, /* dst_mask */ | |
1094 | FALSE), /* pcrel_offset */ | |
1095 | ||
a6bb11b2 | 1096 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12), /* type */ |
a06ea964 NC |
1097 | 0, /* rightshift */ |
1098 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1099 | 12, /* bitsize */ | |
1100 | FALSE, /* pc_relative */ | |
1101 | 0, /* bitpos */ | |
36e6c140 | 1102 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1103 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1104 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12), /* name */ |
a06ea964 NC |
1105 | FALSE, /* partial_inplace */ |
1106 | 0xfff, /* src_mask */ | |
1107 | 0xfff, /* dst_mask */ | |
1108 | FALSE), /* pcrel_offset */ | |
1109 | ||
a6bb11b2 | 1110 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC), /* type */ |
a06ea964 NC |
1111 | 0, /* rightshift */ |
1112 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1113 | 12, /* bitsize */ | |
1114 | FALSE, /* pc_relative */ | |
1115 | 0, /* bitpos */ | |
1116 | complain_overflow_dont, /* complain_on_overflow */ | |
1117 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1118 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC), /* name */ |
a06ea964 NC |
1119 | FALSE, /* partial_inplace */ |
1120 | 0xfff, /* src_mask */ | |
1121 | 0xfff, /* dst_mask */ | |
1122 | FALSE), /* pcrel_offset */ | |
a06ea964 | 1123 | |
a6bb11b2 | 1124 | HOWTO (AARCH64_R (TLSDESC_LD_PREL19), /* type */ |
bb3f9ed8 | 1125 | 2, /* rightshift */ |
a06ea964 | 1126 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1ada945d | 1127 | 19, /* bitsize */ |
a06ea964 NC |
1128 | TRUE, /* pc_relative */ |
1129 | 0, /* bitpos */ | |
1130 | complain_overflow_dont, /* complain_on_overflow */ | |
1131 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1132 | AARCH64_R_STR (TLSDESC_LD_PREL19), /* name */ |
a06ea964 | 1133 | FALSE, /* partial_inplace */ |
1ada945d MS |
1134 | 0x0ffffe0, /* src_mask */ |
1135 | 0x0ffffe0, /* dst_mask */ | |
a06ea964 NC |
1136 | TRUE), /* pcrel_offset */ |
1137 | ||
a6bb11b2 | 1138 | HOWTO (AARCH64_R (TLSDESC_ADR_PREL21), /* type */ |
a06ea964 NC |
1139 | 0, /* rightshift */ |
1140 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1141 | 21, /* bitsize */ | |
1142 | TRUE, /* pc_relative */ | |
1143 | 0, /* bitpos */ | |
1144 | complain_overflow_dont, /* complain_on_overflow */ | |
1145 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1146 | AARCH64_R_STR (TLSDESC_ADR_PREL21), /* name */ |
a06ea964 NC |
1147 | FALSE, /* partial_inplace */ |
1148 | 0x1fffff, /* src_mask */ | |
1149 | 0x1fffff, /* dst_mask */ | |
1150 | TRUE), /* pcrel_offset */ | |
1151 | ||
1152 | /* Get to the page for the GOT entry for the symbol | |
1153 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 1154 | HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21), /* type */ |
a06ea964 NC |
1155 | 12, /* rightshift */ |
1156 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1157 | 21, /* bitsize */ | |
1158 | TRUE, /* pc_relative */ | |
1159 | 0, /* bitpos */ | |
1160 | complain_overflow_dont, /* complain_on_overflow */ | |
1161 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1162 | AARCH64_R_STR (TLSDESC_ADR_PAGE21), /* name */ |
a06ea964 NC |
1163 | FALSE, /* partial_inplace */ |
1164 | 0x1fffff, /* src_mask */ | |
1165 | 0x1fffff, /* dst_mask */ | |
1166 | TRUE), /* pcrel_offset */ | |
1167 | ||
a6bb11b2 YZ |
1168 | /* LD64: GOT offset G(S) & 0xff8. */ |
1169 | HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12_NC), /* type */ | |
a06ea964 NC |
1170 | 3, /* rightshift */ |
1171 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1172 | 12, /* bitsize */ | |
1173 | FALSE, /* 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_LD64_LO12_NC), /* name */ |
a06ea964 | 1178 | FALSE, /* partial_inplace */ |
a6bb11b2 YZ |
1179 | 0xff8, /* src_mask */ |
1180 | 0xff8, /* dst_mask */ | |
1181 | FALSE), /* pcrel_offset */ | |
1182 | ||
1183 | /* LD32: GOT offset G(S) & 0xffc. */ | |
1184 | HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC), /* type */ | |
1185 | 2, /* 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 */ | |
1192 | AARCH64_R_STR (TLSDESC_LD32_LO12_NC), /* name */ | |
1193 | FALSE, /* partial_inplace */ | |
1194 | 0xffc, /* src_mask */ | |
1195 | 0xffc, /* dst_mask */ | |
a06ea964 NC |
1196 | FALSE), /* pcrel_offset */ |
1197 | ||
1198 | /* ADD: GOT offset G(S) & 0xfff. */ | |
a6bb11b2 | 1199 | HOWTO (AARCH64_R (TLSDESC_ADD_LO12_NC), /* type */ |
a06ea964 NC |
1200 | 0, /* 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 */ | |
a6bb11b2 | 1207 | AARCH64_R_STR (TLSDESC_ADD_LO12_NC), /* name */ |
a06ea964 NC |
1208 | FALSE, /* partial_inplace */ |
1209 | 0xfff, /* src_mask */ | |
1210 | 0xfff, /* dst_mask */ | |
1211 | FALSE), /* pcrel_offset */ | |
1212 | ||
a6bb11b2 | 1213 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G1), /* type */ |
bb3f9ed8 | 1214 | 16, /* rightshift */ |
a06ea964 NC |
1215 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1216 | 12, /* bitsize */ | |
1217 | FALSE, /* pc_relative */ | |
1218 | 0, /* bitpos */ | |
1219 | complain_overflow_dont, /* complain_on_overflow */ | |
1220 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1221 | AARCH64_R_STR (TLSDESC_OFF_G1), /* name */ |
a06ea964 NC |
1222 | FALSE, /* partial_inplace */ |
1223 | 0xffff, /* src_mask */ | |
1224 | 0xffff, /* dst_mask */ | |
1225 | FALSE), /* pcrel_offset */ | |
1226 | ||
a6bb11b2 | 1227 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC), /* type */ |
a06ea964 NC |
1228 | 0, /* rightshift */ |
1229 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1230 | 12, /* bitsize */ | |
1231 | FALSE, /* pc_relative */ | |
1232 | 0, /* bitpos */ | |
1233 | complain_overflow_dont, /* complain_on_overflow */ | |
1234 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1235 | AARCH64_R_STR (TLSDESC_OFF_G0_NC), /* name */ |
a06ea964 NC |
1236 | FALSE, /* partial_inplace */ |
1237 | 0xffff, /* src_mask */ | |
1238 | 0xffff, /* dst_mask */ | |
1239 | FALSE), /* pcrel_offset */ | |
1240 | ||
a6bb11b2 | 1241 | HOWTO64 (AARCH64_R (TLSDESC_LDR), /* type */ |
a06ea964 NC |
1242 | 0, /* rightshift */ |
1243 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1244 | 12, /* bitsize */ | |
1245 | FALSE, /* pc_relative */ | |
1246 | 0, /* bitpos */ | |
1247 | complain_overflow_dont, /* complain_on_overflow */ | |
1248 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1249 | AARCH64_R_STR (TLSDESC_LDR), /* name */ |
a06ea964 NC |
1250 | FALSE, /* partial_inplace */ |
1251 | 0x0, /* src_mask */ | |
1252 | 0x0, /* dst_mask */ | |
1253 | FALSE), /* pcrel_offset */ | |
1254 | ||
a6bb11b2 | 1255 | HOWTO64 (AARCH64_R (TLSDESC_ADD), /* type */ |
a06ea964 NC |
1256 | 0, /* rightshift */ |
1257 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1258 | 12, /* bitsize */ | |
1259 | FALSE, /* pc_relative */ | |
1260 | 0, /* bitpos */ | |
1261 | complain_overflow_dont, /* complain_on_overflow */ | |
1262 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1263 | AARCH64_R_STR (TLSDESC_ADD), /* name */ |
a06ea964 NC |
1264 | FALSE, /* partial_inplace */ |
1265 | 0x0, /* src_mask */ | |
1266 | 0x0, /* dst_mask */ | |
1267 | FALSE), /* pcrel_offset */ | |
1268 | ||
a6bb11b2 | 1269 | HOWTO (AARCH64_R (TLSDESC_CALL), /* type */ |
a06ea964 NC |
1270 | 0, /* rightshift */ |
1271 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
7366006f | 1272 | 0, /* bitsize */ |
a06ea964 NC |
1273 | FALSE, /* pc_relative */ |
1274 | 0, /* bitpos */ | |
1275 | complain_overflow_dont, /* complain_on_overflow */ | |
1276 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1277 | AARCH64_R_STR (TLSDESC_CALL), /* name */ |
a06ea964 NC |
1278 | FALSE, /* partial_inplace */ |
1279 | 0x0, /* src_mask */ | |
1280 | 0x0, /* dst_mask */ | |
1281 | FALSE), /* pcrel_offset */ | |
a6bb11b2 YZ |
1282 | |
1283 | HOWTO (AARCH64_R (COPY), /* type */ | |
1284 | 0, /* rightshift */ | |
1285 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1286 | 64, /* bitsize */ | |
1287 | FALSE, /* pc_relative */ | |
1288 | 0, /* bitpos */ | |
1289 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1290 | bfd_elf_generic_reloc, /* special_function */ | |
1291 | AARCH64_R_STR (COPY), /* name */ | |
1292 | TRUE, /* partial_inplace */ | |
1293 | 0xffffffff, /* src_mask */ | |
1294 | 0xffffffff, /* dst_mask */ | |
1295 | FALSE), /* pcrel_offset */ | |
1296 | ||
1297 | HOWTO (AARCH64_R (GLOB_DAT), /* type */ | |
1298 | 0, /* rightshift */ | |
1299 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1300 | 64, /* bitsize */ | |
1301 | FALSE, /* pc_relative */ | |
1302 | 0, /* bitpos */ | |
1303 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1304 | bfd_elf_generic_reloc, /* special_function */ | |
1305 | AARCH64_R_STR (GLOB_DAT), /* name */ | |
1306 | TRUE, /* partial_inplace */ | |
1307 | 0xffffffff, /* src_mask */ | |
1308 | 0xffffffff, /* dst_mask */ | |
1309 | FALSE), /* pcrel_offset */ | |
1310 | ||
1311 | HOWTO (AARCH64_R (JUMP_SLOT), /* type */ | |
1312 | 0, /* rightshift */ | |
1313 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1314 | 64, /* bitsize */ | |
1315 | FALSE, /* pc_relative */ | |
1316 | 0, /* bitpos */ | |
1317 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1318 | bfd_elf_generic_reloc, /* special_function */ | |
1319 | AARCH64_R_STR (JUMP_SLOT), /* name */ | |
1320 | TRUE, /* partial_inplace */ | |
1321 | 0xffffffff, /* src_mask */ | |
1322 | 0xffffffff, /* dst_mask */ | |
1323 | FALSE), /* pcrel_offset */ | |
1324 | ||
1325 | HOWTO (AARCH64_R (RELATIVE), /* type */ | |
1326 | 0, /* rightshift */ | |
1327 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1328 | 64, /* bitsize */ | |
1329 | FALSE, /* pc_relative */ | |
1330 | 0, /* bitpos */ | |
1331 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1332 | bfd_elf_generic_reloc, /* special_function */ | |
1333 | AARCH64_R_STR (RELATIVE), /* name */ | |
1334 | TRUE, /* partial_inplace */ | |
1335 | ALL_ONES, /* src_mask */ | |
1336 | ALL_ONES, /* dst_mask */ | |
1337 | FALSE), /* pcrel_offset */ | |
1338 | ||
1339 | HOWTO (AARCH64_R (TLS_DTPMOD), /* type */ | |
1340 | 0, /* rightshift */ | |
1341 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1342 | 64, /* bitsize */ | |
1343 | FALSE, /* pc_relative */ | |
1344 | 0, /* bitpos */ | |
1345 | complain_overflow_dont, /* complain_on_overflow */ | |
1346 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
1347 | #if ARCH_SIZE == 64 |
1348 | AARCH64_R_STR (TLS_DTPMOD64), /* name */ | |
1349 | #else | |
a6bb11b2 | 1350 | AARCH64_R_STR (TLS_DTPMOD), /* name */ |
da0781dc | 1351 | #endif |
a6bb11b2 YZ |
1352 | FALSE, /* partial_inplace */ |
1353 | 0, /* src_mask */ | |
1354 | ALL_ONES, /* dst_mask */ | |
1355 | FALSE), /* pc_reloffset */ | |
1356 | ||
1357 | HOWTO (AARCH64_R (TLS_DTPREL), /* type */ | |
1358 | 0, /* rightshift */ | |
1359 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1360 | 64, /* bitsize */ | |
1361 | FALSE, /* pc_relative */ | |
1362 | 0, /* bitpos */ | |
1363 | complain_overflow_dont, /* complain_on_overflow */ | |
1364 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
1365 | #if ARCH_SIZE == 64 |
1366 | AARCH64_R_STR (TLS_DTPREL64), /* name */ | |
1367 | #else | |
a6bb11b2 | 1368 | AARCH64_R_STR (TLS_DTPREL), /* name */ |
da0781dc | 1369 | #endif |
a6bb11b2 YZ |
1370 | FALSE, /* partial_inplace */ |
1371 | 0, /* src_mask */ | |
1372 | ALL_ONES, /* dst_mask */ | |
1373 | FALSE), /* pcrel_offset */ | |
1374 | ||
1375 | HOWTO (AARCH64_R (TLS_TPREL), /* type */ | |
1376 | 0, /* rightshift */ | |
1377 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1378 | 64, /* bitsize */ | |
1379 | FALSE, /* pc_relative */ | |
1380 | 0, /* bitpos */ | |
1381 | complain_overflow_dont, /* complain_on_overflow */ | |
1382 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
1383 | #if ARCH_SIZE == 64 |
1384 | AARCH64_R_STR (TLS_TPREL64), /* name */ | |
1385 | #else | |
a6bb11b2 | 1386 | AARCH64_R_STR (TLS_TPREL), /* name */ |
da0781dc | 1387 | #endif |
a6bb11b2 YZ |
1388 | FALSE, /* partial_inplace */ |
1389 | 0, /* src_mask */ | |
1390 | ALL_ONES, /* dst_mask */ | |
1391 | FALSE), /* pcrel_offset */ | |
1392 | ||
1393 | HOWTO (AARCH64_R (TLSDESC), /* type */ | |
1394 | 0, /* rightshift */ | |
1395 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1396 | 64, /* bitsize */ | |
1397 | FALSE, /* pc_relative */ | |
1398 | 0, /* bitpos */ | |
1399 | complain_overflow_dont, /* complain_on_overflow */ | |
1400 | bfd_elf_generic_reloc, /* special_function */ | |
1401 | AARCH64_R_STR (TLSDESC), /* name */ | |
1402 | FALSE, /* partial_inplace */ | |
1403 | 0, /* src_mask */ | |
1404 | ALL_ONES, /* dst_mask */ | |
1405 | FALSE), /* pcrel_offset */ | |
1406 | ||
1407 | HOWTO (AARCH64_R (IRELATIVE), /* type */ | |
1408 | 0, /* rightshift */ | |
1409 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1410 | 64, /* bitsize */ | |
1411 | FALSE, /* pc_relative */ | |
1412 | 0, /* bitpos */ | |
1413 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1414 | bfd_elf_generic_reloc, /* special_function */ | |
1415 | AARCH64_R_STR (IRELATIVE), /* name */ | |
1416 | FALSE, /* partial_inplace */ | |
1417 | 0, /* src_mask */ | |
1418 | ALL_ONES, /* dst_mask */ | |
1419 | FALSE), /* pcrel_offset */ | |
1420 | ||
1421 | EMPTY_HOWTO (0), | |
a06ea964 NC |
1422 | }; |
1423 | ||
a6bb11b2 YZ |
1424 | static reloc_howto_type elfNN_aarch64_howto_none = |
1425 | HOWTO (R_AARCH64_NONE, /* type */ | |
1426 | 0, /* rightshift */ | |
6346d5ca | 1427 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a6bb11b2 YZ |
1428 | 0, /* bitsize */ |
1429 | FALSE, /* pc_relative */ | |
1430 | 0, /* bitpos */ | |
1431 | complain_overflow_dont,/* complain_on_overflow */ | |
1432 | bfd_elf_generic_reloc, /* special_function */ | |
1433 | "R_AARCH64_NONE", /* name */ | |
1434 | FALSE, /* partial_inplace */ | |
1435 | 0, /* src_mask */ | |
1436 | 0, /* dst_mask */ | |
1437 | FALSE); /* pcrel_offset */ | |
1438 | ||
1439 | /* Given HOWTO, return the bfd internal relocation enumerator. */ | |
1440 | ||
1441 | static bfd_reloc_code_real_type | |
1442 | elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type *howto) | |
1443 | { | |
1444 | const int size | |
1445 | = (int) ARRAY_SIZE (elfNN_aarch64_howto_table); | |
1446 | const ptrdiff_t offset | |
1447 | = howto - elfNN_aarch64_howto_table; | |
1448 | ||
1449 | if (offset > 0 && offset < size - 1) | |
1450 | return BFD_RELOC_AARCH64_RELOC_START + offset; | |
1451 | ||
1452 | if (howto == &elfNN_aarch64_howto_none) | |
1453 | return BFD_RELOC_AARCH64_NONE; | |
1454 | ||
1455 | return BFD_RELOC_AARCH64_RELOC_START; | |
1456 | } | |
1457 | ||
1458 | /* Given R_TYPE, return the bfd internal relocation enumerator. */ | |
1459 | ||
1460 | static bfd_reloc_code_real_type | |
1461 | elfNN_aarch64_bfd_reloc_from_type (unsigned int r_type) | |
1462 | { | |
1463 | static bfd_boolean initialized_p = FALSE; | |
1464 | /* Indexed by R_TYPE, values are offsets in the howto_table. */ | |
1465 | static unsigned int offsets[R_AARCH64_end]; | |
1466 | ||
1467 | if (initialized_p == FALSE) | |
1468 | { | |
1469 | unsigned int i; | |
1470 | ||
1471 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) | |
1472 | if (elfNN_aarch64_howto_table[i].type != 0) | |
1473 | offsets[elfNN_aarch64_howto_table[i].type] = i; | |
1474 | ||
1475 | initialized_p = TRUE; | |
1476 | } | |
1477 | ||
1478 | if (r_type == R_AARCH64_NONE || r_type == R_AARCH64_NULL) | |
1479 | return BFD_RELOC_AARCH64_NONE; | |
1480 | ||
5860e3f8 NC |
1481 | /* PR 17512: file: b371e70a. */ |
1482 | if (r_type >= R_AARCH64_end) | |
1483 | { | |
1484 | _bfd_error_handler (_("Invalid AArch64 reloc number: %d"), r_type); | |
1485 | bfd_set_error (bfd_error_bad_value); | |
1486 | return BFD_RELOC_AARCH64_NONE; | |
1487 | } | |
1488 | ||
a6bb11b2 YZ |
1489 | return BFD_RELOC_AARCH64_RELOC_START + offsets[r_type]; |
1490 | } | |
1491 | ||
1492 | struct elf_aarch64_reloc_map | |
1493 | { | |
1494 | bfd_reloc_code_real_type from; | |
1495 | bfd_reloc_code_real_type to; | |
1496 | }; | |
1497 | ||
1498 | /* Map bfd generic reloc to AArch64-specific reloc. */ | |
1499 | static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map[] = | |
1500 | { | |
1501 | {BFD_RELOC_NONE, BFD_RELOC_AARCH64_NONE}, | |
1502 | ||
1503 | /* Basic data relocations. */ | |
1504 | {BFD_RELOC_CTOR, BFD_RELOC_AARCH64_NN}, | |
1505 | {BFD_RELOC_64, BFD_RELOC_AARCH64_64}, | |
1506 | {BFD_RELOC_32, BFD_RELOC_AARCH64_32}, | |
1507 | {BFD_RELOC_16, BFD_RELOC_AARCH64_16}, | |
1508 | {BFD_RELOC_64_PCREL, BFD_RELOC_AARCH64_64_PCREL}, | |
1509 | {BFD_RELOC_32_PCREL, BFD_RELOC_AARCH64_32_PCREL}, | |
1510 | {BFD_RELOC_16_PCREL, BFD_RELOC_AARCH64_16_PCREL}, | |
1511 | }; | |
1512 | ||
1513 | /* Given the bfd internal relocation enumerator in CODE, return the | |
1514 | corresponding howto entry. */ | |
1515 | ||
1516 | static reloc_howto_type * | |
1517 | elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code) | |
1518 | { | |
1519 | unsigned int i; | |
1520 | ||
1521 | /* Convert bfd generic reloc to AArch64-specific reloc. */ | |
1522 | if (code < BFD_RELOC_AARCH64_RELOC_START | |
1523 | || code > BFD_RELOC_AARCH64_RELOC_END) | |
1524 | for (i = 0; i < ARRAY_SIZE (elf_aarch64_reloc_map); i++) | |
1525 | if (elf_aarch64_reloc_map[i].from == code) | |
1526 | { | |
1527 | code = elf_aarch64_reloc_map[i].to; | |
1528 | break; | |
1529 | } | |
1530 | ||
1531 | if (code > BFD_RELOC_AARCH64_RELOC_START | |
1532 | && code < BFD_RELOC_AARCH64_RELOC_END) | |
1533 | if (elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START].type) | |
1534 | return &elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START]; | |
1535 | ||
54757ed1 AP |
1536 | if (code == BFD_RELOC_AARCH64_NONE) |
1537 | return &elfNN_aarch64_howto_none; | |
1538 | ||
a6bb11b2 YZ |
1539 | return NULL; |
1540 | } | |
1541 | ||
a06ea964 | 1542 | static reloc_howto_type * |
cec5225b | 1543 | elfNN_aarch64_howto_from_type (unsigned int r_type) |
a06ea964 | 1544 | { |
a6bb11b2 YZ |
1545 | bfd_reloc_code_real_type val; |
1546 | reloc_howto_type *howto; | |
1547 | ||
cec5225b YZ |
1548 | #if ARCH_SIZE == 32 |
1549 | if (r_type > 256) | |
1550 | { | |
1551 | bfd_set_error (bfd_error_bad_value); | |
1552 | return NULL; | |
1553 | } | |
1554 | #endif | |
1555 | ||
a6bb11b2 YZ |
1556 | if (r_type == R_AARCH64_NONE) |
1557 | return &elfNN_aarch64_howto_none; | |
a06ea964 | 1558 | |
a6bb11b2 YZ |
1559 | val = elfNN_aarch64_bfd_reloc_from_type (r_type); |
1560 | howto = elfNN_aarch64_howto_from_bfd_reloc (val); | |
a06ea964 | 1561 | |
a6bb11b2 YZ |
1562 | if (howto != NULL) |
1563 | return howto; | |
a06ea964 | 1564 | |
a06ea964 NC |
1565 | bfd_set_error (bfd_error_bad_value); |
1566 | return NULL; | |
1567 | } | |
1568 | ||
1569 | static void | |
cec5225b | 1570 | elfNN_aarch64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc, |
a06ea964 NC |
1571 | Elf_Internal_Rela *elf_reloc) |
1572 | { | |
1573 | unsigned int r_type; | |
1574 | ||
cec5225b YZ |
1575 | r_type = ELFNN_R_TYPE (elf_reloc->r_info); |
1576 | bfd_reloc->howto = elfNN_aarch64_howto_from_type (r_type); | |
a06ea964 NC |
1577 | } |
1578 | ||
a06ea964 | 1579 | static reloc_howto_type * |
cec5225b | 1580 | elfNN_aarch64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
1581 | bfd_reloc_code_real_type code) |
1582 | { | |
a6bb11b2 | 1583 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (code); |
a06ea964 | 1584 | |
a6bb11b2 YZ |
1585 | if (howto != NULL) |
1586 | return howto; | |
a06ea964 NC |
1587 | |
1588 | bfd_set_error (bfd_error_bad_value); | |
1589 | return NULL; | |
1590 | } | |
1591 | ||
1592 | static reloc_howto_type * | |
cec5225b | 1593 | elfNN_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
1594 | const char *r_name) |
1595 | { | |
1596 | unsigned int i; | |
1597 | ||
a6bb11b2 YZ |
1598 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) |
1599 | if (elfNN_aarch64_howto_table[i].name != NULL | |
1600 | && strcasecmp (elfNN_aarch64_howto_table[i].name, r_name) == 0) | |
1601 | return &elfNN_aarch64_howto_table[i]; | |
a06ea964 NC |
1602 | |
1603 | return NULL; | |
1604 | } | |
1605 | ||
6d00b590 | 1606 | #define TARGET_LITTLE_SYM aarch64_elfNN_le_vec |
cec5225b | 1607 | #define TARGET_LITTLE_NAME "elfNN-littleaarch64" |
6d00b590 | 1608 | #define TARGET_BIG_SYM aarch64_elfNN_be_vec |
cec5225b | 1609 | #define TARGET_BIG_NAME "elfNN-bigaarch64" |
a06ea964 | 1610 | |
a06ea964 NC |
1611 | /* The linker script knows the section names for placement. |
1612 | The entry_names are used to do simple name mangling on the stubs. | |
1613 | Given a function name, and its type, the stub can be found. The | |
1614 | name can be changed. The only requirement is the %s be present. */ | |
1615 | #define STUB_ENTRY_NAME "__%s_veneer" | |
1616 | ||
1617 | /* The name of the dynamic interpreter. This is put in the .interp | |
1618 | section. */ | |
1619 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
1620 | ||
1621 | #define AARCH64_MAX_FWD_BRANCH_OFFSET \ | |
1622 | (((1 << 25) - 1) << 2) | |
1623 | #define AARCH64_MAX_BWD_BRANCH_OFFSET \ | |
1624 | (-((1 << 25) << 2)) | |
1625 | ||
1626 | #define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1) | |
1627 | #define AARCH64_MIN_ADRP_IMM (-(1 << 20)) | |
1628 | ||
1629 | static int | |
1630 | aarch64_valid_for_adrp_p (bfd_vma value, bfd_vma place) | |
1631 | { | |
1632 | bfd_signed_vma offset = (bfd_signed_vma) (PG (value) - PG (place)) >> 12; | |
1633 | return offset <= AARCH64_MAX_ADRP_IMM && offset >= AARCH64_MIN_ADRP_IMM; | |
1634 | } | |
1635 | ||
1636 | static int | |
1637 | aarch64_valid_branch_p (bfd_vma value, bfd_vma place) | |
1638 | { | |
1639 | bfd_signed_vma offset = (bfd_signed_vma) (value - place); | |
1640 | return (offset <= AARCH64_MAX_FWD_BRANCH_OFFSET | |
1641 | && offset >= AARCH64_MAX_BWD_BRANCH_OFFSET); | |
1642 | } | |
1643 | ||
1644 | static const uint32_t aarch64_adrp_branch_stub [] = | |
1645 | { | |
1646 | 0x90000010, /* adrp ip0, X */ | |
1647 | /* R_AARCH64_ADR_HI21_PCREL(X) */ | |
1648 | 0x91000210, /* add ip0, ip0, :lo12:X */ | |
1649 | /* R_AARCH64_ADD_ABS_LO12_NC(X) */ | |
1650 | 0xd61f0200, /* br ip0 */ | |
1651 | }; | |
1652 | ||
1653 | static const uint32_t aarch64_long_branch_stub[] = | |
1654 | { | |
cec5225b | 1655 | #if ARCH_SIZE == 64 |
a06ea964 | 1656 | 0x58000090, /* ldr ip0, 1f */ |
cec5225b YZ |
1657 | #else |
1658 | 0x18000090, /* ldr wip0, 1f */ | |
1659 | #endif | |
a06ea964 NC |
1660 | 0x10000011, /* adr ip1, #0 */ |
1661 | 0x8b110210, /* add ip0, ip0, ip1 */ | |
1662 | 0xd61f0200, /* br ip0 */ | |
cec5225b YZ |
1663 | 0x00000000, /* 1: .xword or .word |
1664 | R_AARCH64_PRELNN(X) + 12 | |
a06ea964 NC |
1665 | */ |
1666 | 0x00000000, | |
1667 | }; | |
1668 | ||
68fcca92 JW |
1669 | static const uint32_t aarch64_erratum_835769_stub[] = |
1670 | { | |
1671 | 0x00000000, /* Placeholder for multiply accumulate. */ | |
1672 | 0x14000000, /* b <label> */ | |
1673 | }; | |
1674 | ||
4106101c MS |
1675 | static const uint32_t aarch64_erratum_843419_stub[] = |
1676 | { | |
1677 | 0x00000000, /* Placeholder for LDR instruction. */ | |
1678 | 0x14000000, /* b <label> */ | |
1679 | }; | |
1680 | ||
a06ea964 NC |
1681 | /* Section name for stubs is the associated section name plus this |
1682 | string. */ | |
1683 | #define STUB_SUFFIX ".stub" | |
1684 | ||
cec5225b | 1685 | enum elf_aarch64_stub_type |
a06ea964 NC |
1686 | { |
1687 | aarch64_stub_none, | |
1688 | aarch64_stub_adrp_branch, | |
1689 | aarch64_stub_long_branch, | |
68fcca92 | 1690 | aarch64_stub_erratum_835769_veneer, |
4106101c | 1691 | aarch64_stub_erratum_843419_veneer, |
a06ea964 NC |
1692 | }; |
1693 | ||
cec5225b | 1694 | struct elf_aarch64_stub_hash_entry |
a06ea964 NC |
1695 | { |
1696 | /* Base hash table entry structure. */ | |
1697 | struct bfd_hash_entry root; | |
1698 | ||
1699 | /* The stub section. */ | |
1700 | asection *stub_sec; | |
1701 | ||
1702 | /* Offset within stub_sec of the beginning of this stub. */ | |
1703 | bfd_vma stub_offset; | |
1704 | ||
1705 | /* Given the symbol's value and its section we can determine its final | |
1706 | value when building the stubs (so the stub knows where to jump). */ | |
1707 | bfd_vma target_value; | |
1708 | asection *target_section; | |
1709 | ||
cec5225b | 1710 | enum elf_aarch64_stub_type stub_type; |
a06ea964 NC |
1711 | |
1712 | /* The symbol table entry, if any, that this was derived from. */ | |
cec5225b | 1713 | struct elf_aarch64_link_hash_entry *h; |
a06ea964 NC |
1714 | |
1715 | /* Destination symbol type */ | |
1716 | unsigned char st_type; | |
1717 | ||
1718 | /* Where this stub is being called from, or, in the case of combined | |
1719 | stub sections, the first input section in the group. */ | |
1720 | asection *id_sec; | |
1721 | ||
1722 | /* The name for the local symbol at the start of this stub. The | |
1723 | stub name in the hash table has to be unique; this does not, so | |
1724 | it can be friendlier. */ | |
1725 | char *output_name; | |
68fcca92 JW |
1726 | |
1727 | /* The instruction which caused this stub to be generated (only valid for | |
1728 | erratum 835769 workaround stubs at present). */ | |
1729 | uint32_t veneered_insn; | |
4106101c MS |
1730 | |
1731 | /* In an erratum 843419 workaround stub, the ADRP instruction offset. */ | |
1732 | bfd_vma adrp_offset; | |
a06ea964 NC |
1733 | }; |
1734 | ||
1735 | /* Used to build a map of a section. This is required for mixed-endian | |
1736 | code/data. */ | |
1737 | ||
cec5225b | 1738 | typedef struct elf_elf_section_map |
a06ea964 NC |
1739 | { |
1740 | bfd_vma vma; | |
1741 | char type; | |
1742 | } | |
cec5225b | 1743 | elf_aarch64_section_map; |
a06ea964 NC |
1744 | |
1745 | ||
1746 | typedef struct _aarch64_elf_section_data | |
1747 | { | |
1748 | struct bfd_elf_section_data elf; | |
1749 | unsigned int mapcount; | |
1750 | unsigned int mapsize; | |
cec5225b | 1751 | elf_aarch64_section_map *map; |
a06ea964 NC |
1752 | } |
1753 | _aarch64_elf_section_data; | |
1754 | ||
cec5225b | 1755 | #define elf_aarch64_section_data(sec) \ |
a06ea964 NC |
1756 | ((_aarch64_elf_section_data *) elf_section_data (sec)) |
1757 | ||
4e8516b2 AP |
1758 | /* The size of the thread control block which is defined to be two pointers. */ |
1759 | #define TCB_SIZE (ARCH_SIZE/8)*2 | |
a06ea964 NC |
1760 | |
1761 | struct elf_aarch64_local_symbol | |
1762 | { | |
1763 | unsigned int got_type; | |
1764 | bfd_signed_vma got_refcount; | |
1765 | bfd_vma got_offset; | |
1766 | ||
1767 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The | |
1768 | offset is from the end of the jump table and reserved entries | |
1769 | within the PLTGOT. | |
1770 | ||
1771 | The magic value (bfd_vma) -1 indicates that an offset has not be | |
1772 | allocated. */ | |
1773 | bfd_vma tlsdesc_got_jump_table_offset; | |
1774 | }; | |
1775 | ||
1776 | struct elf_aarch64_obj_tdata | |
1777 | { | |
1778 | struct elf_obj_tdata root; | |
1779 | ||
1780 | /* local symbol descriptors */ | |
1781 | struct elf_aarch64_local_symbol *locals; | |
1782 | ||
1783 | /* Zero to warn when linking objects with incompatible enum sizes. */ | |
1784 | int no_enum_size_warning; | |
1785 | ||
1786 | /* Zero to warn when linking objects with incompatible wchar_t sizes. */ | |
1787 | int no_wchar_size_warning; | |
1788 | }; | |
1789 | ||
1790 | #define elf_aarch64_tdata(bfd) \ | |
1791 | ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any) | |
1792 | ||
cec5225b | 1793 | #define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals) |
a06ea964 NC |
1794 | |
1795 | #define is_aarch64_elf(bfd) \ | |
1796 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
1797 | && elf_tdata (bfd) != NULL \ | |
1798 | && elf_object_id (bfd) == AARCH64_ELF_DATA) | |
1799 | ||
1800 | static bfd_boolean | |
cec5225b | 1801 | elfNN_aarch64_mkobject (bfd *abfd) |
a06ea964 NC |
1802 | { |
1803 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_aarch64_obj_tdata), | |
1804 | AARCH64_ELF_DATA); | |
1805 | } | |
1806 | ||
cec5225b YZ |
1807 | #define elf_aarch64_hash_entry(ent) \ |
1808 | ((struct elf_aarch64_link_hash_entry *)(ent)) | |
a06ea964 NC |
1809 | |
1810 | #define GOT_UNKNOWN 0 | |
1811 | #define GOT_NORMAL 1 | |
1812 | #define GOT_TLS_GD 2 | |
1813 | #define GOT_TLS_IE 4 | |
1814 | #define GOT_TLSDESC_GD 8 | |
1815 | ||
1816 | #define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD)) | |
1817 | ||
1818 | /* AArch64 ELF linker hash entry. */ | |
cec5225b | 1819 | struct elf_aarch64_link_hash_entry |
a06ea964 NC |
1820 | { |
1821 | struct elf_link_hash_entry root; | |
1822 | ||
1823 | /* Track dynamic relocs copied for this symbol. */ | |
1824 | struct elf_dyn_relocs *dyn_relocs; | |
1825 | ||
a06ea964 NC |
1826 | /* Since PLT entries have variable size, we need to record the |
1827 | index into .got.plt instead of recomputing it from the PLT | |
1828 | offset. */ | |
1829 | bfd_signed_vma plt_got_offset; | |
1830 | ||
1831 | /* Bit mask representing the type of GOT entry(s) if any required by | |
1832 | this symbol. */ | |
1833 | unsigned int got_type; | |
1834 | ||
1835 | /* A pointer to the most recently used stub hash entry against this | |
1836 | symbol. */ | |
cec5225b | 1837 | struct elf_aarch64_stub_hash_entry *stub_cache; |
a06ea964 NC |
1838 | |
1839 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset | |
1840 | is from the end of the jump table and reserved entries within the PLTGOT. | |
1841 | ||
1842 | The magic value (bfd_vma) -1 indicates that an offset has not | |
1843 | be allocated. */ | |
1844 | bfd_vma tlsdesc_got_jump_table_offset; | |
1845 | }; | |
1846 | ||
1847 | static unsigned int | |
cec5225b | 1848 | elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry *h, |
a06ea964 NC |
1849 | bfd *abfd, |
1850 | unsigned long r_symndx) | |
1851 | { | |
1852 | if (h) | |
cec5225b | 1853 | return elf_aarch64_hash_entry (h)->got_type; |
a06ea964 | 1854 | |
cec5225b | 1855 | if (! elf_aarch64_locals (abfd)) |
a06ea964 NC |
1856 | return GOT_UNKNOWN; |
1857 | ||
cec5225b | 1858 | return elf_aarch64_locals (abfd)[r_symndx].got_type; |
a06ea964 NC |
1859 | } |
1860 | ||
a06ea964 | 1861 | /* Get the AArch64 elf linker hash table from a link_info structure. */ |
cec5225b YZ |
1862 | #define elf_aarch64_hash_table(info) \ |
1863 | ((struct elf_aarch64_link_hash_table *) ((info)->hash)) | |
a06ea964 NC |
1864 | |
1865 | #define aarch64_stub_hash_lookup(table, string, create, copy) \ | |
cec5225b | 1866 | ((struct elf_aarch64_stub_hash_entry *) \ |
a06ea964 NC |
1867 | bfd_hash_lookup ((table), (string), (create), (copy))) |
1868 | ||
1869 | /* AArch64 ELF linker hash table. */ | |
cec5225b | 1870 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
1871 | { |
1872 | /* The main hash table. */ | |
1873 | struct elf_link_hash_table root; | |
1874 | ||
1875 | /* Nonzero to force PIC branch veneers. */ | |
1876 | int pic_veneer; | |
1877 | ||
68fcca92 JW |
1878 | /* Fix erratum 835769. */ |
1879 | int fix_erratum_835769; | |
1880 | ||
4106101c MS |
1881 | /* Fix erratum 843419. */ |
1882 | int fix_erratum_843419; | |
1883 | ||
1884 | /* Enable ADRP->ADR rewrite for erratum 843419 workaround. */ | |
1885 | int fix_erratum_843419_adr; | |
1886 | ||
a06ea964 NC |
1887 | /* The number of bytes in the initial entry in the PLT. */ |
1888 | bfd_size_type plt_header_size; | |
1889 | ||
1890 | /* The number of bytes in the subsequent PLT etries. */ | |
1891 | bfd_size_type plt_entry_size; | |
1892 | ||
1893 | /* Short-cuts to get to dynamic linker sections. */ | |
1894 | asection *sdynbss; | |
1895 | asection *srelbss; | |
1896 | ||
1897 | /* Small local sym cache. */ | |
1898 | struct sym_cache sym_cache; | |
1899 | ||
1900 | /* For convenience in allocate_dynrelocs. */ | |
1901 | bfd *obfd; | |
1902 | ||
1903 | /* The amount of space used by the reserved portion of the sgotplt | |
1904 | section, plus whatever space is used by the jump slots. */ | |
1905 | bfd_vma sgotplt_jump_table_size; | |
1906 | ||
1907 | /* The stub hash table. */ | |
1908 | struct bfd_hash_table stub_hash_table; | |
1909 | ||
1910 | /* Linker stub bfd. */ | |
1911 | bfd *stub_bfd; | |
1912 | ||
1913 | /* Linker call-backs. */ | |
1914 | asection *(*add_stub_section) (const char *, asection *); | |
1915 | void (*layout_sections_again) (void); | |
1916 | ||
1917 | /* Array to keep track of which stub sections have been created, and | |
1918 | information on stub grouping. */ | |
1919 | struct map_stub | |
1920 | { | |
1921 | /* This is the section to which stubs in the group will be | |
1922 | attached. */ | |
1923 | asection *link_sec; | |
1924 | /* The stub section. */ | |
1925 | asection *stub_sec; | |
1926 | } *stub_group; | |
1927 | ||
cec5225b | 1928 | /* Assorted information used by elfNN_aarch64_size_stubs. */ |
a06ea964 NC |
1929 | unsigned int bfd_count; |
1930 | int top_index; | |
1931 | asection **input_list; | |
1932 | ||
1933 | /* The offset into splt of the PLT entry for the TLS descriptor | |
1934 | resolver. Special values are 0, if not necessary (or not found | |
1935 | to be necessary yet), and -1 if needed but not determined | |
1936 | yet. */ | |
1937 | bfd_vma tlsdesc_plt; | |
1938 | ||
1939 | /* The GOT offset for the lazy trampoline. Communicated to the | |
1940 | loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1 | |
1941 | indicates an offset is not allocated. */ | |
1942 | bfd_vma dt_tlsdesc_got; | |
1419bbe5 WN |
1943 | |
1944 | /* Used by local STT_GNU_IFUNC symbols. */ | |
1945 | htab_t loc_hash_table; | |
1946 | void * loc_hash_memory; | |
a06ea964 NC |
1947 | }; |
1948 | ||
a06ea964 NC |
1949 | /* Create an entry in an AArch64 ELF linker hash table. */ |
1950 | ||
1951 | static struct bfd_hash_entry * | |
cec5225b | 1952 | elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry, |
a06ea964 NC |
1953 | struct bfd_hash_table *table, |
1954 | const char *string) | |
1955 | { | |
cec5225b YZ |
1956 | struct elf_aarch64_link_hash_entry *ret = |
1957 | (struct elf_aarch64_link_hash_entry *) entry; | |
a06ea964 NC |
1958 | |
1959 | /* Allocate the structure if it has not already been allocated by a | |
1960 | subclass. */ | |
1961 | if (ret == NULL) | |
1962 | ret = bfd_hash_allocate (table, | |
cec5225b | 1963 | sizeof (struct elf_aarch64_link_hash_entry)); |
a06ea964 NC |
1964 | if (ret == NULL) |
1965 | return (struct bfd_hash_entry *) ret; | |
1966 | ||
1967 | /* Call the allocation method of the superclass. */ | |
cec5225b | 1968 | ret = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
1969 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
1970 | table, string)); | |
1971 | if (ret != NULL) | |
1972 | { | |
1973 | ret->dyn_relocs = NULL; | |
a06ea964 NC |
1974 | ret->got_type = GOT_UNKNOWN; |
1975 | ret->plt_got_offset = (bfd_vma) - 1; | |
1976 | ret->stub_cache = NULL; | |
1977 | ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
1978 | } | |
1979 | ||
1980 | return (struct bfd_hash_entry *) ret; | |
1981 | } | |
1982 | ||
1983 | /* Initialize an entry in the stub hash table. */ | |
1984 | ||
1985 | static struct bfd_hash_entry * | |
1986 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
1987 | struct bfd_hash_table *table, const char *string) | |
1988 | { | |
1989 | /* Allocate the structure if it has not already been allocated by a | |
1990 | subclass. */ | |
1991 | if (entry == NULL) | |
1992 | { | |
1993 | entry = bfd_hash_allocate (table, | |
1994 | sizeof (struct | |
cec5225b | 1995 | elf_aarch64_stub_hash_entry)); |
a06ea964 NC |
1996 | if (entry == NULL) |
1997 | return entry; | |
1998 | } | |
1999 | ||
2000 | /* Call the allocation method of the superclass. */ | |
2001 | entry = bfd_hash_newfunc (entry, table, string); | |
2002 | if (entry != NULL) | |
2003 | { | |
cec5225b | 2004 | struct elf_aarch64_stub_hash_entry *eh; |
a06ea964 NC |
2005 | |
2006 | /* Initialize the local fields. */ | |
cec5225b | 2007 | eh = (struct elf_aarch64_stub_hash_entry *) entry; |
4106101c | 2008 | eh->adrp_offset = 0; |
a06ea964 NC |
2009 | eh->stub_sec = NULL; |
2010 | eh->stub_offset = 0; | |
2011 | eh->target_value = 0; | |
2012 | eh->target_section = NULL; | |
2013 | eh->stub_type = aarch64_stub_none; | |
2014 | eh->h = NULL; | |
2015 | eh->id_sec = NULL; | |
2016 | } | |
2017 | ||
2018 | return entry; | |
2019 | } | |
2020 | ||
1419bbe5 WN |
2021 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry |
2022 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
2023 | as global symbol. We reuse indx and dynstr_index for local symbol | |
2024 | hash since they aren't used by global symbols in this backend. */ | |
2025 | ||
2026 | static hashval_t | |
2027 | elfNN_aarch64_local_htab_hash (const void *ptr) | |
2028 | { | |
2029 | struct elf_link_hash_entry *h | |
2030 | = (struct elf_link_hash_entry *) ptr; | |
2031 | return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); | |
2032 | } | |
2033 | ||
2034 | /* Compare local hash entries. */ | |
2035 | ||
2036 | static int | |
2037 | elfNN_aarch64_local_htab_eq (const void *ptr1, const void *ptr2) | |
2038 | { | |
2039 | struct elf_link_hash_entry *h1 | |
2040 | = (struct elf_link_hash_entry *) ptr1; | |
2041 | struct elf_link_hash_entry *h2 | |
2042 | = (struct elf_link_hash_entry *) ptr2; | |
2043 | ||
2044 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
2045 | } | |
2046 | ||
2047 | /* Find and/or create a hash entry for local symbol. */ | |
2048 | ||
2049 | static struct elf_link_hash_entry * | |
2050 | elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table *htab, | |
2051 | bfd *abfd, const Elf_Internal_Rela *rel, | |
2052 | bfd_boolean create) | |
2053 | { | |
2054 | struct elf_aarch64_link_hash_entry e, *ret; | |
2055 | asection *sec = abfd->sections; | |
2056 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, | |
2057 | ELFNN_R_SYM (rel->r_info)); | |
2058 | void **slot; | |
2059 | ||
2060 | e.root.indx = sec->id; | |
2061 | e.root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2062 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, | |
2063 | create ? INSERT : NO_INSERT); | |
2064 | ||
2065 | if (!slot) | |
2066 | return NULL; | |
2067 | ||
2068 | if (*slot) | |
2069 | { | |
2070 | ret = (struct elf_aarch64_link_hash_entry *) *slot; | |
2071 | return &ret->root; | |
2072 | } | |
2073 | ||
2074 | ret = (struct elf_aarch64_link_hash_entry *) | |
2075 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, | |
2076 | sizeof (struct elf_aarch64_link_hash_entry)); | |
2077 | if (ret) | |
2078 | { | |
2079 | memset (ret, 0, sizeof (*ret)); | |
2080 | ret->root.indx = sec->id; | |
2081 | ret->root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2082 | ret->root.dynindx = -1; | |
2083 | *slot = ret; | |
2084 | } | |
2085 | return &ret->root; | |
2086 | } | |
a06ea964 NC |
2087 | |
2088 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
2089 | ||
2090 | static void | |
cec5225b | 2091 | elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info, |
a06ea964 NC |
2092 | struct elf_link_hash_entry *dir, |
2093 | struct elf_link_hash_entry *ind) | |
2094 | { | |
cec5225b | 2095 | struct elf_aarch64_link_hash_entry *edir, *eind; |
a06ea964 | 2096 | |
cec5225b YZ |
2097 | edir = (struct elf_aarch64_link_hash_entry *) dir; |
2098 | eind = (struct elf_aarch64_link_hash_entry *) ind; | |
a06ea964 NC |
2099 | |
2100 | if (eind->dyn_relocs != NULL) | |
2101 | { | |
2102 | if (edir->dyn_relocs != NULL) | |
2103 | { | |
2104 | struct elf_dyn_relocs **pp; | |
2105 | struct elf_dyn_relocs *p; | |
2106 | ||
2107 | /* Add reloc counts against the indirect sym to the direct sym | |
2108 | list. Merge any entries against the same section. */ | |
2109 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) | |
2110 | { | |
2111 | struct elf_dyn_relocs *q; | |
2112 | ||
2113 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
2114 | if (q->sec == p->sec) | |
2115 | { | |
2116 | q->pc_count += p->pc_count; | |
2117 | q->count += p->count; | |
2118 | *pp = p->next; | |
2119 | break; | |
2120 | } | |
2121 | if (q == NULL) | |
2122 | pp = &p->next; | |
2123 | } | |
2124 | *pp = edir->dyn_relocs; | |
2125 | } | |
2126 | ||
2127 | edir->dyn_relocs = eind->dyn_relocs; | |
2128 | eind->dyn_relocs = NULL; | |
2129 | } | |
2130 | ||
a06ea964 NC |
2131 | if (ind->root.type == bfd_link_hash_indirect) |
2132 | { | |
2133 | /* Copy over PLT info. */ | |
2134 | if (dir->got.refcount <= 0) | |
2135 | { | |
2136 | edir->got_type = eind->got_type; | |
2137 | eind->got_type = GOT_UNKNOWN; | |
2138 | } | |
2139 | } | |
2140 | ||
2141 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
2142 | } | |
2143 | ||
68faa637 AM |
2144 | /* Destroy an AArch64 elf linker hash table. */ |
2145 | ||
2146 | static void | |
d495ab0d | 2147 | elfNN_aarch64_link_hash_table_free (bfd *obfd) |
68faa637 AM |
2148 | { |
2149 | struct elf_aarch64_link_hash_table *ret | |
d495ab0d | 2150 | = (struct elf_aarch64_link_hash_table *) obfd->link.hash; |
68faa637 AM |
2151 | |
2152 | if (ret->loc_hash_table) | |
2153 | htab_delete (ret->loc_hash_table); | |
2154 | if (ret->loc_hash_memory) | |
2155 | objalloc_free ((struct objalloc *) ret->loc_hash_memory); | |
2156 | ||
2157 | bfd_hash_table_free (&ret->stub_hash_table); | |
d495ab0d | 2158 | _bfd_elf_link_hash_table_free (obfd); |
68faa637 AM |
2159 | } |
2160 | ||
a06ea964 NC |
2161 | /* Create an AArch64 elf linker hash table. */ |
2162 | ||
2163 | static struct bfd_link_hash_table * | |
cec5225b | 2164 | elfNN_aarch64_link_hash_table_create (bfd *abfd) |
a06ea964 | 2165 | { |
cec5225b YZ |
2166 | struct elf_aarch64_link_hash_table *ret; |
2167 | bfd_size_type amt = sizeof (struct elf_aarch64_link_hash_table); | |
a06ea964 | 2168 | |
7bf52ea2 | 2169 | ret = bfd_zmalloc (amt); |
a06ea964 NC |
2170 | if (ret == NULL) |
2171 | return NULL; | |
2172 | ||
2173 | if (!_bfd_elf_link_hash_table_init | |
cec5225b YZ |
2174 | (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc, |
2175 | sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA)) | |
a06ea964 NC |
2176 | { |
2177 | free (ret); | |
2178 | return NULL; | |
2179 | } | |
2180 | ||
a06ea964 NC |
2181 | ret->plt_header_size = PLT_ENTRY_SIZE; |
2182 | ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE; | |
a06ea964 | 2183 | ret->obfd = abfd; |
a06ea964 NC |
2184 | ret->dt_tlsdesc_got = (bfd_vma) - 1; |
2185 | ||
2186 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc, | |
cec5225b | 2187 | sizeof (struct elf_aarch64_stub_hash_entry))) |
a06ea964 | 2188 | { |
d495ab0d | 2189 | _bfd_elf_link_hash_table_free (abfd); |
a06ea964 NC |
2190 | return NULL; |
2191 | } | |
2192 | ||
1419bbe5 WN |
2193 | ret->loc_hash_table = htab_try_create (1024, |
2194 | elfNN_aarch64_local_htab_hash, | |
2195 | elfNN_aarch64_local_htab_eq, | |
2196 | NULL); | |
2197 | ret->loc_hash_memory = objalloc_create (); | |
2198 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
2199 | { | |
d495ab0d | 2200 | elfNN_aarch64_link_hash_table_free (abfd); |
1419bbe5 WN |
2201 | return NULL; |
2202 | } | |
d495ab0d | 2203 | ret->root.root.hash_table_free = elfNN_aarch64_link_hash_table_free; |
1419bbe5 | 2204 | |
a06ea964 NC |
2205 | return &ret->root.root; |
2206 | } | |
2207 | ||
a06ea964 NC |
2208 | static bfd_boolean |
2209 | aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section, | |
2210 | bfd_vma offset, bfd_vma value) | |
2211 | { | |
2212 | reloc_howto_type *howto; | |
2213 | bfd_vma place; | |
2214 | ||
cec5225b | 2215 | howto = elfNN_aarch64_howto_from_type (r_type); |
a06ea964 NC |
2216 | place = (input_section->output_section->vma + input_section->output_offset |
2217 | + offset); | |
caed7120 YZ |
2218 | |
2219 | r_type = elfNN_aarch64_bfd_reloc_from_type (r_type); | |
2220 | value = _bfd_aarch64_elf_resolve_relocation (r_type, place, value, 0, FALSE); | |
2221 | return _bfd_aarch64_elf_put_addend (input_bfd, | |
2222 | input_section->contents + offset, r_type, | |
2223 | howto, value); | |
a06ea964 NC |
2224 | } |
2225 | ||
cec5225b | 2226 | static enum elf_aarch64_stub_type |
a06ea964 NC |
2227 | aarch64_select_branch_stub (bfd_vma value, bfd_vma place) |
2228 | { | |
2229 | if (aarch64_valid_for_adrp_p (value, place)) | |
2230 | return aarch64_stub_adrp_branch; | |
2231 | return aarch64_stub_long_branch; | |
2232 | } | |
2233 | ||
2234 | /* Determine the type of stub needed, if any, for a call. */ | |
2235 | ||
cec5225b | 2236 | static enum elf_aarch64_stub_type |
a06ea964 NC |
2237 | aarch64_type_of_stub (struct bfd_link_info *info, |
2238 | asection *input_sec, | |
2239 | const Elf_Internal_Rela *rel, | |
2240 | unsigned char st_type, | |
cec5225b | 2241 | struct elf_aarch64_link_hash_entry *hash, |
a06ea964 NC |
2242 | bfd_vma destination) |
2243 | { | |
2244 | bfd_vma location; | |
2245 | bfd_signed_vma branch_offset; | |
2246 | unsigned int r_type; | |
cec5225b YZ |
2247 | struct elf_aarch64_link_hash_table *globals; |
2248 | enum elf_aarch64_stub_type stub_type = aarch64_stub_none; | |
a06ea964 NC |
2249 | bfd_boolean via_plt_p; |
2250 | ||
2251 | if (st_type != STT_FUNC) | |
2252 | return stub_type; | |
2253 | ||
cec5225b | 2254 | globals = elf_aarch64_hash_table (info); |
a06ea964 NC |
2255 | via_plt_p = (globals->root.splt != NULL && hash != NULL |
2256 | && hash->root.plt.offset != (bfd_vma) - 1); | |
2257 | ||
2258 | if (via_plt_p) | |
2259 | return stub_type; | |
2260 | ||
2261 | /* Determine where the call point is. */ | |
2262 | location = (input_sec->output_offset | |
2263 | + input_sec->output_section->vma + rel->r_offset); | |
2264 | ||
2265 | branch_offset = (bfd_signed_vma) (destination - location); | |
2266 | ||
cec5225b | 2267 | r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
2268 | |
2269 | /* We don't want to redirect any old unconditional jump in this way, | |
2270 | only one which is being used for a sibcall, where it is | |
2271 | acceptable for the IP0 and IP1 registers to be clobbered. */ | |
a6bb11b2 | 2272 | if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26)) |
a06ea964 NC |
2273 | && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET |
2274 | || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET)) | |
2275 | { | |
2276 | stub_type = aarch64_stub_long_branch; | |
2277 | } | |
2278 | ||
2279 | return stub_type; | |
2280 | } | |
2281 | ||
2282 | /* Build a name for an entry in the stub hash table. */ | |
2283 | ||
2284 | static char * | |
cec5225b | 2285 | elfNN_aarch64_stub_name (const asection *input_section, |
a06ea964 | 2286 | const asection *sym_sec, |
cec5225b | 2287 | const struct elf_aarch64_link_hash_entry *hash, |
a06ea964 NC |
2288 | const Elf_Internal_Rela *rel) |
2289 | { | |
2290 | char *stub_name; | |
2291 | bfd_size_type len; | |
2292 | ||
2293 | if (hash) | |
2294 | { | |
2295 | len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1; | |
2296 | stub_name = bfd_malloc (len); | |
2297 | if (stub_name != NULL) | |
2298 | snprintf (stub_name, len, "%08x_%s+%" BFD_VMA_FMT "x", | |
2299 | (unsigned int) input_section->id, | |
2300 | hash->root.root.root.string, | |
2301 | rel->r_addend); | |
2302 | } | |
2303 | else | |
2304 | { | |
2305 | len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1; | |
2306 | stub_name = bfd_malloc (len); | |
2307 | if (stub_name != NULL) | |
2308 | snprintf (stub_name, len, "%08x_%x:%x+%" BFD_VMA_FMT "x", | |
2309 | (unsigned int) input_section->id, | |
2310 | (unsigned int) sym_sec->id, | |
cec5225b | 2311 | (unsigned int) ELFNN_R_SYM (rel->r_info), |
a06ea964 NC |
2312 | rel->r_addend); |
2313 | } | |
2314 | ||
2315 | return stub_name; | |
2316 | } | |
2317 | ||
2318 | /* Look up an entry in the stub hash. Stub entries are cached because | |
2319 | creating the stub name takes a bit of time. */ | |
2320 | ||
cec5225b YZ |
2321 | static struct elf_aarch64_stub_hash_entry * |
2322 | elfNN_aarch64_get_stub_entry (const asection *input_section, | |
a06ea964 NC |
2323 | const asection *sym_sec, |
2324 | struct elf_link_hash_entry *hash, | |
2325 | const Elf_Internal_Rela *rel, | |
cec5225b | 2326 | struct elf_aarch64_link_hash_table *htab) |
a06ea964 | 2327 | { |
cec5225b YZ |
2328 | struct elf_aarch64_stub_hash_entry *stub_entry; |
2329 | struct elf_aarch64_link_hash_entry *h = | |
2330 | (struct elf_aarch64_link_hash_entry *) hash; | |
a06ea964 NC |
2331 | const asection *id_sec; |
2332 | ||
2333 | if ((input_section->flags & SEC_CODE) == 0) | |
2334 | return NULL; | |
2335 | ||
2336 | /* If this input section is part of a group of sections sharing one | |
2337 | stub section, then use the id of the first section in the group. | |
2338 | Stub names need to include a section id, as there may well be | |
2339 | more than one stub used to reach say, printf, and we need to | |
2340 | distinguish between them. */ | |
2341 | id_sec = htab->stub_group[input_section->id].link_sec; | |
2342 | ||
2343 | if (h != NULL && h->stub_cache != NULL | |
2344 | && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec) | |
2345 | { | |
2346 | stub_entry = h->stub_cache; | |
2347 | } | |
2348 | else | |
2349 | { | |
2350 | char *stub_name; | |
2351 | ||
cec5225b | 2352 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel); |
a06ea964 NC |
2353 | if (stub_name == NULL) |
2354 | return NULL; | |
2355 | ||
2356 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
2357 | stub_name, FALSE, FALSE); | |
2358 | if (h != NULL) | |
2359 | h->stub_cache = stub_entry; | |
2360 | ||
2361 | free (stub_name); | |
2362 | } | |
2363 | ||
2364 | return stub_entry; | |
2365 | } | |
2366 | ||
a06ea964 | 2367 | |
66585675 MS |
2368 | /* Create a stub section. */ |
2369 | ||
2370 | static asection * | |
2371 | _bfd_aarch64_create_stub_section (asection *section, | |
2372 | struct elf_aarch64_link_hash_table *htab) | |
2373 | { | |
2374 | size_t namelen; | |
2375 | bfd_size_type len; | |
2376 | char *s_name; | |
2377 | ||
2378 | namelen = strlen (section->name); | |
2379 | len = namelen + sizeof (STUB_SUFFIX); | |
2380 | s_name = bfd_alloc (htab->stub_bfd, len); | |
2381 | if (s_name == NULL) | |
2382 | return NULL; | |
2383 | ||
2384 | memcpy (s_name, section->name, namelen); | |
2385 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
2386 | return (*htab->add_stub_section) (s_name, section); | |
2387 | } | |
2388 | ||
2389 | ||
fc6d53be MS |
2390 | /* Find or create a stub section for a link section. |
2391 | ||
2392 | Fix or create the stub section used to collect stubs attached to | |
2393 | the specified link section. */ | |
2394 | ||
2395 | static asection * | |
2396 | _bfd_aarch64_get_stub_for_link_section (asection *link_section, | |
2397 | struct elf_aarch64_link_hash_table *htab) | |
2398 | { | |
2399 | if (htab->stub_group[link_section->id].stub_sec == NULL) | |
2400 | htab->stub_group[link_section->id].stub_sec | |
2401 | = _bfd_aarch64_create_stub_section (link_section, htab); | |
2402 | return htab->stub_group[link_section->id].stub_sec; | |
2403 | } | |
2404 | ||
2405 | ||
ef857521 MS |
2406 | /* Find or create a stub section in the stub group for an input |
2407 | section. */ | |
2408 | ||
2409 | static asection * | |
2410 | _bfd_aarch64_create_or_find_stub_sec (asection *section, | |
2411 | struct elf_aarch64_link_hash_table *htab) | |
a06ea964 | 2412 | { |
fc6d53be MS |
2413 | asection *link_sec = htab->stub_group[section->id].link_sec; |
2414 | return _bfd_aarch64_get_stub_for_link_section (link_sec, htab); | |
ef857521 MS |
2415 | } |
2416 | ||
2417 | ||
2418 | /* Add a new stub entry in the stub group associated with an input | |
2419 | section to the stub hash. Not all fields of the new stub entry are | |
2420 | initialised. */ | |
2421 | ||
2422 | static struct elf_aarch64_stub_hash_entry * | |
2423 | _bfd_aarch64_add_stub_entry_in_group (const char *stub_name, | |
2424 | asection *section, | |
2425 | struct elf_aarch64_link_hash_table *htab) | |
2426 | { | |
2427 | asection *link_sec; | |
2428 | asection *stub_sec; | |
2429 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
2430 | ||
2431 | link_sec = htab->stub_group[section->id].link_sec; | |
2432 | stub_sec = _bfd_aarch64_create_or_find_stub_sec (section, htab); | |
2433 | ||
a06ea964 NC |
2434 | /* Enter this entry into the linker stub hash table. */ |
2435 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
2436 | TRUE, FALSE); | |
2437 | if (stub_entry == NULL) | |
2438 | { | |
2439 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), | |
2440 | section->owner, stub_name); | |
2441 | return NULL; | |
2442 | } | |
2443 | ||
2444 | stub_entry->stub_sec = stub_sec; | |
2445 | stub_entry->stub_offset = 0; | |
2446 | stub_entry->id_sec = link_sec; | |
2447 | ||
2448 | return stub_entry; | |
2449 | } | |
2450 | ||
4106101c MS |
2451 | /* Add a new stub entry in the final stub section to the stub hash. |
2452 | Not all fields of the new stub entry are initialised. */ | |
2453 | ||
2454 | static struct elf_aarch64_stub_hash_entry * | |
2455 | _bfd_aarch64_add_stub_entry_after (const char *stub_name, | |
2456 | asection *link_section, | |
2457 | struct elf_aarch64_link_hash_table *htab) | |
2458 | { | |
2459 | asection *stub_sec; | |
2460 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
2461 | ||
2462 | stub_sec = _bfd_aarch64_get_stub_for_link_section (link_section, htab); | |
2463 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
2464 | TRUE, FALSE); | |
2465 | if (stub_entry == NULL) | |
2466 | { | |
2467 | (*_bfd_error_handler) (_("cannot create stub entry %s"), stub_name); | |
2468 | return NULL; | |
2469 | } | |
2470 | ||
2471 | stub_entry->stub_sec = stub_sec; | |
2472 | stub_entry->stub_offset = 0; | |
2473 | stub_entry->id_sec = link_section; | |
2474 | ||
2475 | return stub_entry; | |
2476 | } | |
2477 | ||
2478 | ||
a06ea964 NC |
2479 | static bfd_boolean |
2480 | aarch64_build_one_stub (struct bfd_hash_entry *gen_entry, | |
2481 | void *in_arg ATTRIBUTE_UNUSED) | |
2482 | { | |
cec5225b | 2483 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
2484 | asection *stub_sec; |
2485 | bfd *stub_bfd; | |
2486 | bfd_byte *loc; | |
2487 | bfd_vma sym_value; | |
68fcca92 JW |
2488 | bfd_vma veneered_insn_loc; |
2489 | bfd_vma veneer_entry_loc; | |
2490 | bfd_signed_vma branch_offset = 0; | |
a06ea964 NC |
2491 | unsigned int template_size; |
2492 | const uint32_t *template; | |
2493 | unsigned int i; | |
2494 | ||
2495 | /* Massage our args to the form they really have. */ | |
cec5225b | 2496 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
2497 | |
2498 | stub_sec = stub_entry->stub_sec; | |
2499 | ||
2500 | /* Make a note of the offset within the stubs for this entry. */ | |
2501 | stub_entry->stub_offset = stub_sec->size; | |
2502 | loc = stub_sec->contents + stub_entry->stub_offset; | |
2503 | ||
2504 | stub_bfd = stub_sec->owner; | |
2505 | ||
2506 | /* This is the address of the stub destination. */ | |
2507 | sym_value = (stub_entry->target_value | |
2508 | + stub_entry->target_section->output_offset | |
2509 | + stub_entry->target_section->output_section->vma); | |
2510 | ||
2511 | if (stub_entry->stub_type == aarch64_stub_long_branch) | |
2512 | { | |
2513 | bfd_vma place = (stub_entry->stub_offset + stub_sec->output_section->vma | |
2514 | + stub_sec->output_offset); | |
2515 | ||
2516 | /* See if we can relax the stub. */ | |
2517 | if (aarch64_valid_for_adrp_p (sym_value, place)) | |
2518 | stub_entry->stub_type = aarch64_select_branch_stub (sym_value, place); | |
2519 | } | |
2520 | ||
2521 | switch (stub_entry->stub_type) | |
2522 | { | |
2523 | case aarch64_stub_adrp_branch: | |
2524 | template = aarch64_adrp_branch_stub; | |
2525 | template_size = sizeof (aarch64_adrp_branch_stub); | |
2526 | break; | |
2527 | case aarch64_stub_long_branch: | |
2528 | template = aarch64_long_branch_stub; | |
2529 | template_size = sizeof (aarch64_long_branch_stub); | |
2530 | break; | |
68fcca92 JW |
2531 | case aarch64_stub_erratum_835769_veneer: |
2532 | template = aarch64_erratum_835769_stub; | |
2533 | template_size = sizeof (aarch64_erratum_835769_stub); | |
2534 | break; | |
4106101c MS |
2535 | case aarch64_stub_erratum_843419_veneer: |
2536 | template = aarch64_erratum_843419_stub; | |
2537 | template_size = sizeof (aarch64_erratum_843419_stub); | |
2538 | break; | |
a06ea964 | 2539 | default: |
8e2fe09f | 2540 | abort (); |
a06ea964 NC |
2541 | } |
2542 | ||
2543 | for (i = 0; i < (template_size / sizeof template[0]); i++) | |
2544 | { | |
2545 | bfd_putl32 (template[i], loc); | |
2546 | loc += 4; | |
2547 | } | |
2548 | ||
2549 | template_size = (template_size + 7) & ~7; | |
2550 | stub_sec->size += template_size; | |
2551 | ||
2552 | switch (stub_entry->stub_type) | |
2553 | { | |
2554 | case aarch64_stub_adrp_branch: | |
a6bb11b2 | 2555 | if (aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21), stub_bfd, stub_sec, |
a06ea964 NC |
2556 | stub_entry->stub_offset, sym_value)) |
2557 | /* The stub would not have been relaxed if the offset was out | |
2558 | of range. */ | |
2559 | BFD_FAIL (); | |
2560 | ||
93ca8569 TB |
2561 | if (aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC), stub_bfd, stub_sec, |
2562 | stub_entry->stub_offset + 4, sym_value)) | |
2563 | BFD_FAIL (); | |
a06ea964 NC |
2564 | break; |
2565 | ||
2566 | case aarch64_stub_long_branch: | |
2567 | /* We want the value relative to the address 12 bytes back from the | |
2568 | value itself. */ | |
93ca8569 TB |
2569 | if (aarch64_relocate (AARCH64_R (PRELNN), stub_bfd, stub_sec, |
2570 | stub_entry->stub_offset + 16, sym_value + 12)) | |
2571 | BFD_FAIL (); | |
a06ea964 | 2572 | break; |
68fcca92 JW |
2573 | |
2574 | case aarch64_stub_erratum_835769_veneer: | |
2575 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
2576 | + stub_entry->target_section->output_offset | |
2577 | + stub_entry->target_value; | |
2578 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
2579 | + stub_entry->stub_sec->output_offset | |
2580 | + stub_entry->stub_offset; | |
2581 | branch_offset = veneered_insn_loc - veneer_entry_loc; | |
2582 | branch_offset >>= 2; | |
2583 | branch_offset &= 0x3ffffff; | |
2584 | bfd_putl32 (stub_entry->veneered_insn, | |
2585 | stub_sec->contents + stub_entry->stub_offset); | |
2586 | bfd_putl32 (template[1] | branch_offset, | |
2587 | stub_sec->contents + stub_entry->stub_offset + 4); | |
2588 | break; | |
2589 | ||
4106101c MS |
2590 | case aarch64_stub_erratum_843419_veneer: |
2591 | if (aarch64_relocate (AARCH64_R (JUMP26), stub_bfd, stub_sec, | |
2592 | stub_entry->stub_offset + 4, sym_value + 4)) | |
2593 | BFD_FAIL (); | |
2594 | break; | |
2595 | ||
a06ea964 | 2596 | default: |
8e2fe09f | 2597 | abort (); |
a06ea964 NC |
2598 | } |
2599 | ||
2600 | return TRUE; | |
2601 | } | |
2602 | ||
2603 | /* As above, but don't actually build the stub. Just bump offset so | |
2604 | we know stub section sizes. */ | |
2605 | ||
2606 | static bfd_boolean | |
2607 | aarch64_size_one_stub (struct bfd_hash_entry *gen_entry, | |
2608 | void *in_arg ATTRIBUTE_UNUSED) | |
2609 | { | |
cec5225b | 2610 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
2611 | int size; |
2612 | ||
2613 | /* Massage our args to the form they really have. */ | |
cec5225b | 2614 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
2615 | |
2616 | switch (stub_entry->stub_type) | |
2617 | { | |
2618 | case aarch64_stub_adrp_branch: | |
2619 | size = sizeof (aarch64_adrp_branch_stub); | |
2620 | break; | |
2621 | case aarch64_stub_long_branch: | |
2622 | size = sizeof (aarch64_long_branch_stub); | |
2623 | break; | |
68fcca92 JW |
2624 | case aarch64_stub_erratum_835769_veneer: |
2625 | size = sizeof (aarch64_erratum_835769_stub); | |
2626 | break; | |
4106101c MS |
2627 | case aarch64_stub_erratum_843419_veneer: |
2628 | size = sizeof (aarch64_erratum_843419_stub); | |
2629 | break; | |
a06ea964 | 2630 | default: |
8e2fe09f | 2631 | abort (); |
a06ea964 NC |
2632 | } |
2633 | ||
2634 | size = (size + 7) & ~7; | |
2635 | stub_entry->stub_sec->size += size; | |
2636 | return TRUE; | |
2637 | } | |
2638 | ||
2639 | /* External entry points for sizing and building linker stubs. */ | |
2640 | ||
2641 | /* Set up various things so that we can make a list of input sections | |
2642 | for each output section included in the link. Returns -1 on error, | |
2643 | 0 when no stubs will be needed, and 1 on success. */ | |
2644 | ||
2645 | int | |
cec5225b | 2646 | elfNN_aarch64_setup_section_lists (bfd *output_bfd, |
a06ea964 NC |
2647 | struct bfd_link_info *info) |
2648 | { | |
2649 | bfd *input_bfd; | |
2650 | unsigned int bfd_count; | |
2651 | int top_id, top_index; | |
2652 | asection *section; | |
2653 | asection **input_list, **list; | |
2654 | bfd_size_type amt; | |
cec5225b YZ |
2655 | struct elf_aarch64_link_hash_table *htab = |
2656 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
2657 | |
2658 | if (!is_elf_hash_table (htab)) | |
2659 | return 0; | |
2660 | ||
2661 | /* Count the number of input BFDs and find the top input section id. */ | |
2662 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
c72f2fb2 | 2663 | input_bfd != NULL; input_bfd = input_bfd->link.next) |
a06ea964 NC |
2664 | { |
2665 | bfd_count += 1; | |
2666 | for (section = input_bfd->sections; | |
2667 | section != NULL; section = section->next) | |
2668 | { | |
2669 | if (top_id < section->id) | |
2670 | top_id = section->id; | |
2671 | } | |
2672 | } | |
2673 | htab->bfd_count = bfd_count; | |
2674 | ||
2675 | amt = sizeof (struct map_stub) * (top_id + 1); | |
2676 | htab->stub_group = bfd_zmalloc (amt); | |
2677 | if (htab->stub_group == NULL) | |
2678 | return -1; | |
2679 | ||
2680 | /* We can't use output_bfd->section_count here to find the top output | |
2681 | section index as some sections may have been removed, and | |
2682 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
2683 | for (section = output_bfd->sections, top_index = 0; | |
2684 | section != NULL; section = section->next) | |
2685 | { | |
2686 | if (top_index < section->index) | |
2687 | top_index = section->index; | |
2688 | } | |
2689 | ||
2690 | htab->top_index = top_index; | |
2691 | amt = sizeof (asection *) * (top_index + 1); | |
2692 | input_list = bfd_malloc (amt); | |
2693 | htab->input_list = input_list; | |
2694 | if (input_list == NULL) | |
2695 | return -1; | |
2696 | ||
2697 | /* For sections we aren't interested in, mark their entries with a | |
2698 | value we can check later. */ | |
2699 | list = input_list + top_index; | |
2700 | do | |
2701 | *list = bfd_abs_section_ptr; | |
2702 | while (list-- != input_list); | |
2703 | ||
2704 | for (section = output_bfd->sections; | |
2705 | section != NULL; section = section->next) | |
2706 | { | |
2707 | if ((section->flags & SEC_CODE) != 0) | |
2708 | input_list[section->index] = NULL; | |
2709 | } | |
2710 | ||
2711 | return 1; | |
2712 | } | |
2713 | ||
cec5225b | 2714 | /* Used by elfNN_aarch64_next_input_section and group_sections. */ |
a06ea964 NC |
2715 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
2716 | ||
2717 | /* The linker repeatedly calls this function for each input section, | |
2718 | in the order that input sections are linked into output sections. | |
2719 | Build lists of input sections to determine groupings between which | |
2720 | we may insert linker stubs. */ | |
2721 | ||
2722 | void | |
cec5225b | 2723 | elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec) |
a06ea964 | 2724 | { |
cec5225b YZ |
2725 | struct elf_aarch64_link_hash_table *htab = |
2726 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
2727 | |
2728 | if (isec->output_section->index <= htab->top_index) | |
2729 | { | |
2730 | asection **list = htab->input_list + isec->output_section->index; | |
2731 | ||
2732 | if (*list != bfd_abs_section_ptr) | |
2733 | { | |
2734 | /* Steal the link_sec pointer for our list. */ | |
2735 | /* This happens to make the list in reverse order, | |
2736 | which is what we want. */ | |
2737 | PREV_SEC (isec) = *list; | |
2738 | *list = isec; | |
2739 | } | |
2740 | } | |
2741 | } | |
2742 | ||
2743 | /* See whether we can group stub sections together. Grouping stub | |
2744 | sections may result in fewer stubs. More importantly, we need to | |
2745 | put all .init* and .fini* stubs at the beginning of the .init or | |
2746 | .fini output sections respectively, because glibc splits the | |
2747 | _init and _fini functions into multiple parts. Putting a stub in | |
2748 | the middle of a function is not a good idea. */ | |
2749 | ||
2750 | static void | |
cec5225b | 2751 | group_sections (struct elf_aarch64_link_hash_table *htab, |
a06ea964 NC |
2752 | bfd_size_type stub_group_size, |
2753 | bfd_boolean stubs_always_before_branch) | |
2754 | { | |
2755 | asection **list = htab->input_list + htab->top_index; | |
2756 | ||
2757 | do | |
2758 | { | |
2759 | asection *tail = *list; | |
2760 | ||
2761 | if (tail == bfd_abs_section_ptr) | |
2762 | continue; | |
2763 | ||
2764 | while (tail != NULL) | |
2765 | { | |
2766 | asection *curr; | |
2767 | asection *prev; | |
2768 | bfd_size_type total; | |
2769 | ||
2770 | curr = tail; | |
2771 | total = tail->size; | |
2772 | while ((prev = PREV_SEC (curr)) != NULL | |
2773 | && ((total += curr->output_offset - prev->output_offset) | |
2774 | < stub_group_size)) | |
2775 | curr = prev; | |
2776 | ||
2777 | /* OK, the size from the start of CURR to the end is less | |
2778 | than stub_group_size and thus can be handled by one stub | |
2779 | section. (Or the tail section is itself larger than | |
2780 | stub_group_size, in which case we may be toast.) | |
2781 | We should really be keeping track of the total size of | |
2782 | stubs added here, as stubs contribute to the final output | |
2783 | section size. */ | |
2784 | do | |
2785 | { | |
2786 | prev = PREV_SEC (tail); | |
2787 | /* Set up this stub group. */ | |
2788 | htab->stub_group[tail->id].link_sec = curr; | |
2789 | } | |
2790 | while (tail != curr && (tail = prev) != NULL); | |
2791 | ||
2792 | /* But wait, there's more! Input sections up to stub_group_size | |
2793 | bytes before the stub section can be handled by it too. */ | |
2794 | if (!stubs_always_before_branch) | |
2795 | { | |
2796 | total = 0; | |
2797 | while (prev != NULL | |
2798 | && ((total += tail->output_offset - prev->output_offset) | |
2799 | < stub_group_size)) | |
2800 | { | |
2801 | tail = prev; | |
2802 | prev = PREV_SEC (tail); | |
2803 | htab->stub_group[tail->id].link_sec = curr; | |
2804 | } | |
2805 | } | |
2806 | tail = prev; | |
2807 | } | |
2808 | } | |
2809 | while (list-- != htab->input_list); | |
2810 | ||
2811 | free (htab->input_list); | |
2812 | } | |
2813 | ||
2814 | #undef PREV_SEC | |
2815 | ||
68fcca92 JW |
2816 | #define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1)) |
2817 | ||
2818 | #define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5) | |
2819 | #define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5) | |
2820 | #define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5) | |
2821 | #define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5) | |
2822 | #define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5) | |
2823 | #define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5) | |
2824 | ||
2825 | #define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000) | |
2826 | #define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1) | |
2827 | #define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3) | |
2828 | #define AARCH64_ZR 0x1f | |
2829 | ||
2830 | /* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for | |
2831 | LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */ | |
2832 | ||
2833 | #define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1) | |
2834 | #define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000) | |
2835 | #define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000) | |
2836 | #define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000) | |
2837 | #define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000) | |
2838 | #define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000) | |
2839 | #define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000) | |
2840 | #define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000) | |
2841 | #define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000) | |
2842 | #define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400) | |
2843 | #define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800) | |
2844 | #define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00) | |
2845 | #define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800) | |
2846 | #define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000) | |
2847 | #define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000) | |
2848 | #define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000) | |
2849 | #define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000) | |
2850 | #define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000) | |
2851 | ||
3d14faea MS |
2852 | /* Classify an INSN if it is indeed a load/store. |
2853 | ||
2854 | Return TRUE if INSN is a LD/ST instruction otherwise return FALSE. | |
2855 | ||
2856 | For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2 | |
2857 | is set equal to RT. | |
2858 | ||
2859 | For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. | |
2860 | ||
2861 | */ | |
68fcca92 JW |
2862 | |
2863 | static bfd_boolean | |
3d14faea | 2864 | aarch64_mem_op_p (uint32_t insn, unsigned int *rt, unsigned int *rt2, |
68fcca92 JW |
2865 | bfd_boolean *pair, bfd_boolean *load) |
2866 | { | |
2867 | uint32_t opcode; | |
2868 | unsigned int r; | |
2869 | uint32_t opc = 0; | |
2870 | uint32_t v = 0; | |
2871 | uint32_t opc_v = 0; | |
2872 | ||
2873 | /* Bail out quickly if INSN doesn't fall into the the load-store | |
2874 | encoding space. */ | |
2875 | if (!AARCH64_LDST (insn)) | |
2876 | return FALSE; | |
2877 | ||
2878 | *pair = FALSE; | |
2879 | *load = FALSE; | |
2880 | if (AARCH64_LDST_EX (insn)) | |
2881 | { | |
2882 | *rt = AARCH64_RT (insn); | |
3d14faea | 2883 | *rt2 = *rt; |
68fcca92 JW |
2884 | if (AARCH64_BIT (insn, 21) == 1) |
2885 | { | |
2886 | *pair = TRUE; | |
3d14faea | 2887 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
2888 | } |
2889 | *load = AARCH64_LD (insn); | |
2890 | return TRUE; | |
2891 | } | |
2892 | else if (AARCH64_LDST_NAP (insn) | |
2893 | || AARCH64_LDSTP_PI (insn) | |
2894 | || AARCH64_LDSTP_O (insn) | |
2895 | || AARCH64_LDSTP_PRE (insn)) | |
2896 | { | |
2897 | *pair = TRUE; | |
2898 | *rt = AARCH64_RT (insn); | |
3d14faea | 2899 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
2900 | *load = AARCH64_LD (insn); |
2901 | return TRUE; | |
2902 | } | |
2903 | else if (AARCH64_LDST_PCREL (insn) | |
2904 | || AARCH64_LDST_UI (insn) | |
2905 | || AARCH64_LDST_PIIMM (insn) | |
2906 | || AARCH64_LDST_U (insn) | |
2907 | || AARCH64_LDST_PREIMM (insn) | |
2908 | || AARCH64_LDST_RO (insn) | |
2909 | || AARCH64_LDST_UIMM (insn)) | |
2910 | { | |
2911 | *rt = AARCH64_RT (insn); | |
3d14faea | 2912 | *rt2 = *rt; |
68fcca92 JW |
2913 | if (AARCH64_LDST_PCREL (insn)) |
2914 | *load = TRUE; | |
2915 | opc = AARCH64_BITS (insn, 22, 2); | |
2916 | v = AARCH64_BIT (insn, 26); | |
2917 | opc_v = opc | (v << 2); | |
2918 | *load = (opc_v == 1 || opc_v == 2 || opc_v == 3 | |
2919 | || opc_v == 5 || opc_v == 7); | |
2920 | return TRUE; | |
2921 | } | |
2922 | else if (AARCH64_LDST_SIMD_M (insn) | |
2923 | || AARCH64_LDST_SIMD_M_PI (insn)) | |
2924 | { | |
2925 | *rt = AARCH64_RT (insn); | |
2926 | *load = AARCH64_BIT (insn, 22); | |
2927 | opcode = (insn >> 12) & 0xf; | |
2928 | switch (opcode) | |
2929 | { | |
2930 | case 0: | |
2931 | case 2: | |
3d14faea | 2932 | *rt2 = *rt + 3; |
68fcca92 JW |
2933 | break; |
2934 | ||
2935 | case 4: | |
2936 | case 6: | |
3d14faea | 2937 | *rt2 = *rt + 2; |
68fcca92 JW |
2938 | break; |
2939 | ||
2940 | case 7: | |
3d14faea | 2941 | *rt2 = *rt; |
68fcca92 JW |
2942 | break; |
2943 | ||
2944 | case 8: | |
2945 | case 10: | |
3d14faea | 2946 | *rt2 = *rt + 1; |
68fcca92 JW |
2947 | break; |
2948 | ||
2949 | default: | |
2950 | return FALSE; | |
2951 | } | |
2952 | return TRUE; | |
2953 | } | |
2954 | else if (AARCH64_LDST_SIMD_S (insn) | |
2955 | || AARCH64_LDST_SIMD_S_PI (insn)) | |
2956 | { | |
2957 | *rt = AARCH64_RT (insn); | |
2958 | r = (insn >> 21) & 1; | |
2959 | *load = AARCH64_BIT (insn, 22); | |
2960 | opcode = (insn >> 13) & 0x7; | |
2961 | switch (opcode) | |
2962 | { | |
2963 | case 0: | |
2964 | case 2: | |
2965 | case 4: | |
3d14faea | 2966 | *rt2 = *rt + r; |
68fcca92 JW |
2967 | break; |
2968 | ||
2969 | case 1: | |
2970 | case 3: | |
2971 | case 5: | |
3d14faea | 2972 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
2973 | break; |
2974 | ||
2975 | case 6: | |
3d14faea | 2976 | *rt2 = *rt + r; |
68fcca92 JW |
2977 | break; |
2978 | ||
2979 | case 7: | |
3d14faea | 2980 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
2981 | break; |
2982 | ||
2983 | default: | |
2984 | return FALSE; | |
2985 | } | |
2986 | return TRUE; | |
2987 | } | |
2988 | ||
2989 | return FALSE; | |
2990 | } | |
2991 | ||
2992 | /* Return TRUE if INSN is multiply-accumulate. */ | |
2993 | ||
2994 | static bfd_boolean | |
2995 | aarch64_mlxl_p (uint32_t insn) | |
2996 | { | |
2997 | uint32_t op31 = AARCH64_OP31 (insn); | |
2998 | ||
2999 | if (AARCH64_MAC (insn) | |
3000 | && (op31 == 0 || op31 == 1 || op31 == 5) | |
3001 | /* Exclude MUL instructions which are encoded as a multiple accumulate | |
3002 | with RA = XZR. */ | |
3003 | && AARCH64_RA (insn) != AARCH64_ZR) | |
3004 | return TRUE; | |
3005 | ||
3006 | return FALSE; | |
3007 | } | |
3008 | ||
3009 | /* Some early revisions of the Cortex-A53 have an erratum (835769) whereby | |
3010 | it is possible for a 64-bit multiply-accumulate instruction to generate an | |
3011 | incorrect result. The details are quite complex and hard to | |
3012 | determine statically, since branches in the code may exist in some | |
3013 | circumstances, but all cases end with a memory (load, store, or | |
3014 | prefetch) instruction followed immediately by the multiply-accumulate | |
3015 | operation. We employ a linker patching technique, by moving the potentially | |
3016 | affected multiply-accumulate instruction into a patch region and replacing | |
3017 | the original instruction with a branch to the patch. This function checks | |
3018 | if INSN_1 is the memory operation followed by a multiply-accumulate | |
3019 | operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE | |
3020 | if INSN_1 and INSN_2 are safe. */ | |
3021 | ||
3022 | static bfd_boolean | |
3023 | aarch64_erratum_sequence (uint32_t insn_1, uint32_t insn_2) | |
3024 | { | |
3025 | uint32_t rt; | |
3d14faea | 3026 | uint32_t rt2; |
68fcca92 JW |
3027 | uint32_t rn; |
3028 | uint32_t rm; | |
3029 | uint32_t ra; | |
3030 | bfd_boolean pair; | |
3031 | bfd_boolean load; | |
3032 | ||
3033 | if (aarch64_mlxl_p (insn_2) | |
3d14faea | 3034 | && aarch64_mem_op_p (insn_1, &rt, &rt2, &pair, &load)) |
68fcca92 JW |
3035 | { |
3036 | /* Any SIMD memory op is independent of the subsequent MLA | |
3037 | by definition of the erratum. */ | |
3038 | if (AARCH64_BIT (insn_1, 26)) | |
3039 | return TRUE; | |
3040 | ||
3041 | /* If not SIMD, check for integer memory ops and MLA relationship. */ | |
3042 | rn = AARCH64_RN (insn_2); | |
3043 | ra = AARCH64_RA (insn_2); | |
3044 | rm = AARCH64_RM (insn_2); | |
3045 | ||
3046 | /* If this is a load and there's a true(RAW) dependency, we are safe | |
3047 | and this is not an erratum sequence. */ | |
3048 | if (load && | |
3049 | (rt == rn || rt == rm || rt == ra | |
3d14faea | 3050 | || (pair && (rt2 == rn || rt2 == rm || rt2 == ra)))) |
68fcca92 JW |
3051 | return FALSE; |
3052 | ||
3053 | /* We conservatively put out stubs for all other cases (including | |
3054 | writebacks). */ | |
3055 | return TRUE; | |
3056 | } | |
3057 | ||
3058 | return FALSE; | |
3059 | } | |
3060 | ||
520c7b56 JW |
3061 | /* Used to order a list of mapping symbols by address. */ |
3062 | ||
3063 | static int | |
3064 | elf_aarch64_compare_mapping (const void *a, const void *b) | |
3065 | { | |
3066 | const elf_aarch64_section_map *amap = (const elf_aarch64_section_map *) a; | |
3067 | const elf_aarch64_section_map *bmap = (const elf_aarch64_section_map *) b; | |
3068 | ||
3069 | if (amap->vma > bmap->vma) | |
3070 | return 1; | |
3071 | else if (amap->vma < bmap->vma) | |
3072 | return -1; | |
3073 | else if (amap->type > bmap->type) | |
3074 | /* Ensure results do not depend on the host qsort for objects with | |
3075 | multiple mapping symbols at the same address by sorting on type | |
3076 | after vma. */ | |
3077 | return 1; | |
3078 | else if (amap->type < bmap->type) | |
3079 | return -1; | |
3080 | else | |
3081 | return 0; | |
3082 | } | |
3083 | ||
2144188d | 3084 | |
35fee8b7 MS |
3085 | static char * |
3086 | _bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes) | |
3087 | { | |
3088 | char *stub_name = (char *) bfd_malloc | |
3089 | (strlen ("__erratum_835769_veneer_") + 16); | |
3090 | sprintf (stub_name,"__erratum_835769_veneer_%d", num_fixes); | |
3091 | return stub_name; | |
3092 | } | |
3093 | ||
4106101c | 3094 | /* Scan for Cortex-A53 erratum 835769 sequence. |
2144188d MS |
3095 | |
3096 | Return TRUE else FALSE on abnormal termination. */ | |
3097 | ||
68fcca92 | 3098 | static bfd_boolean |
5421cc6e MS |
3099 | _bfd_aarch64_erratum_835769_scan (bfd *input_bfd, |
3100 | struct bfd_link_info *info, | |
3101 | unsigned int *num_fixes_p) | |
68fcca92 JW |
3102 | { |
3103 | asection *section; | |
3104 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
68fcca92 | 3105 | unsigned int num_fixes = *num_fixes_p; |
68fcca92 JW |
3106 | |
3107 | if (htab == NULL) | |
2144188d | 3108 | return TRUE; |
68fcca92 JW |
3109 | |
3110 | for (section = input_bfd->sections; | |
3111 | section != NULL; | |
3112 | section = section->next) | |
3113 | { | |
3114 | bfd_byte *contents = NULL; | |
3115 | struct _aarch64_elf_section_data *sec_data; | |
3116 | unsigned int span; | |
3117 | ||
3118 | if (elf_section_type (section) != SHT_PROGBITS | |
3119 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
3120 | || (section->flags & SEC_EXCLUDE) != 0 | |
3121 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
3122 | || (section->output_section == bfd_abs_section_ptr)) | |
3123 | continue; | |
3124 | ||
3125 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
3126 | contents = elf_section_data (section)->this_hdr.contents; | |
3127 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
2144188d | 3128 | return FALSE; |
68fcca92 JW |
3129 | |
3130 | sec_data = elf_aarch64_section_data (section); | |
520c7b56 JW |
3131 | |
3132 | qsort (sec_data->map, sec_data->mapcount, | |
3133 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
3134 | ||
68fcca92 JW |
3135 | for (span = 0; span < sec_data->mapcount; span++) |
3136 | { | |
3137 | unsigned int span_start = sec_data->map[span].vma; | |
3138 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
3139 | ? sec_data->map[0].vma + section->size | |
3140 | : sec_data->map[span + 1].vma); | |
3141 | unsigned int i; | |
3142 | char span_type = sec_data->map[span].type; | |
3143 | ||
3144 | if (span_type == 'd') | |
3145 | continue; | |
3146 | ||
3147 | for (i = span_start; i + 4 < span_end; i += 4) | |
3148 | { | |
3149 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
3150 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
3151 | ||
3152 | if (aarch64_erratum_sequence (insn_1, insn_2)) | |
3153 | { | |
5421cc6e | 3154 | struct elf_aarch64_stub_hash_entry *stub_entry; |
35fee8b7 MS |
3155 | char *stub_name = _bfd_aarch64_erratum_835769_stub_name (num_fixes); |
3156 | if (! stub_name) | |
2144188d | 3157 | return FALSE; |
68fcca92 | 3158 | |
5421cc6e MS |
3159 | stub_entry = _bfd_aarch64_add_stub_entry_in_group (stub_name, |
3160 | section, | |
3161 | htab); | |
3162 | if (! stub_entry) | |
3163 | return FALSE; | |
68fcca92 | 3164 | |
5421cc6e MS |
3165 | stub_entry->stub_type = aarch64_stub_erratum_835769_veneer; |
3166 | stub_entry->target_section = section; | |
3167 | stub_entry->target_value = i + 4; | |
3168 | stub_entry->veneered_insn = insn_2; | |
3169 | stub_entry->output_name = stub_name; | |
68fcca92 JW |
3170 | num_fixes++; |
3171 | } | |
3172 | } | |
3173 | } | |
3174 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
3175 | free (contents); | |
3176 | } | |
3177 | ||
357d1523 MS |
3178 | *num_fixes_p = num_fixes; |
3179 | ||
2144188d | 3180 | return TRUE; |
68fcca92 JW |
3181 | } |
3182 | ||
13f622ec | 3183 | |
4106101c MS |
3184 | /* Test if instruction INSN is ADRP. */ |
3185 | ||
3186 | static bfd_boolean | |
3187 | _bfd_aarch64_adrp_p (uint32_t insn) | |
3188 | { | |
3189 | return ((insn & 0x9f000000) == 0x90000000); | |
3190 | } | |
3191 | ||
3192 | ||
3193 | /* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */ | |
3194 | ||
3195 | static bfd_boolean | |
3196 | _bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1, uint32_t insn_2, | |
3197 | uint32_t insn_3) | |
3198 | { | |
3199 | uint32_t rt; | |
3200 | uint32_t rt2; | |
3201 | bfd_boolean pair; | |
3202 | bfd_boolean load; | |
3203 | ||
3204 | return (aarch64_mem_op_p (insn_2, &rt, &rt2, &pair, &load) | |
3205 | && (!pair | |
3206 | || (pair && !load)) | |
3207 | && AARCH64_LDST_UIMM (insn_3) | |
3208 | && AARCH64_RN (insn_3) == AARCH64_RD (insn_1)); | |
3209 | } | |
3210 | ||
3211 | ||
3212 | /* Test for the presence of Cortex-A53 erratum 843419 instruction sequence. | |
3213 | ||
3214 | Return TRUE if section CONTENTS at offset I contains one of the | |
3215 | erratum 843419 sequences, otherwise return FALSE. If a sequence is | |
3216 | seen set P_VENEER_I to the offset of the final LOAD/STORE | |
3217 | instruction in the sequence. | |
3218 | */ | |
3219 | ||
3220 | static bfd_boolean | |
3221 | _bfd_aarch64_erratum_843419_p (bfd_byte *contents, bfd_vma vma, | |
3222 | bfd_vma i, bfd_vma span_end, | |
3223 | bfd_vma *p_veneer_i) | |
3224 | { | |
3225 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
3226 | ||
3227 | if (!_bfd_aarch64_adrp_p (insn_1)) | |
3228 | return FALSE; | |
3229 | ||
3230 | if (span_end < i + 12) | |
3231 | return FALSE; | |
3232 | ||
3233 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
3234 | uint32_t insn_3 = bfd_getl32 (contents + i + 8); | |
3235 | ||
3236 | if ((vma & 0xfff) != 0xff8 && (vma & 0xfff) != 0xffc) | |
3237 | return FALSE; | |
3238 | ||
3239 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_3)) | |
3240 | { | |
3241 | *p_veneer_i = i + 8; | |
3242 | return TRUE; | |
3243 | } | |
3244 | ||
3245 | if (span_end < i + 16) | |
3246 | return FALSE; | |
3247 | ||
3248 | uint32_t insn_4 = bfd_getl32 (contents + i + 12); | |
3249 | ||
3250 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_4)) | |
3251 | { | |
3252 | *p_veneer_i = i + 12; | |
3253 | return TRUE; | |
3254 | } | |
3255 | ||
3256 | return FALSE; | |
3257 | } | |
3258 | ||
3259 | ||
13f622ec MS |
3260 | /* Resize all stub sections. */ |
3261 | ||
3262 | static void | |
3263 | _bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table *htab) | |
3264 | { | |
3265 | asection *section; | |
3266 | ||
3267 | /* OK, we've added some stubs. Find out the new size of the | |
3268 | stub sections. */ | |
3269 | for (section = htab->stub_bfd->sections; | |
3270 | section != NULL; section = section->next) | |
3271 | { | |
3272 | /* Ignore non-stub sections. */ | |
3273 | if (!strstr (section->name, STUB_SUFFIX)) | |
3274 | continue; | |
3275 | section->size = 0; | |
3276 | } | |
3277 | ||
3278 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab); | |
13f622ec | 3279 | |
61865519 MS |
3280 | for (section = htab->stub_bfd->sections; |
3281 | section != NULL; section = section->next) | |
3282 | { | |
3283 | if (!strstr (section->name, STUB_SUFFIX)) | |
3284 | continue; | |
3285 | ||
3286 | if (section->size) | |
3287 | section->size += 4; | |
4106101c MS |
3288 | |
3289 | /* Ensure all stub sections have a size which is a multiple of | |
3290 | 4096. This is important in order to ensure that the insertion | |
3291 | of stub sections does not in itself move existing code around | |
3292 | in such a way that new errata sequences are created. */ | |
3293 | if (htab->fix_erratum_843419) | |
3294 | if (section->size) | |
3295 | section->size = BFD_ALIGN (section->size, 0x1000); | |
3296 | } | |
3297 | } | |
3298 | ||
3299 | ||
3300 | /* Construct an erratum 843419 workaround stub name. | |
3301 | */ | |
3302 | ||
3303 | static char * | |
3304 | _bfd_aarch64_erratum_843419_stub_name (asection *input_section, | |
3305 | bfd_vma offset) | |
3306 | { | |
3307 | const bfd_size_type len = 8 + 4 + 1 + 8 + 1 + 16 + 1; | |
3308 | char *stub_name = bfd_malloc (len); | |
3309 | ||
3310 | if (stub_name != NULL) | |
3311 | snprintf (stub_name, len, "e843419@%04x_%08x_%" BFD_VMA_FMT "x", | |
3312 | input_section->owner->id, | |
3313 | input_section->id, | |
3314 | offset); | |
3315 | return stub_name; | |
3316 | } | |
3317 | ||
3318 | /* Build a stub_entry structure describing an 843419 fixup. | |
3319 | ||
3320 | The stub_entry constructed is populated with the bit pattern INSN | |
3321 | of the instruction located at OFFSET within input SECTION. | |
3322 | ||
3323 | Returns TRUE on success. */ | |
3324 | ||
3325 | static bfd_boolean | |
3326 | _bfd_aarch64_erratum_843419_fixup (uint32_t insn, | |
3327 | bfd_vma adrp_offset, | |
3328 | bfd_vma ldst_offset, | |
3329 | asection *section, | |
3330 | struct bfd_link_info *info) | |
3331 | { | |
3332 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
3333 | char *stub_name; | |
3334 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
3335 | ||
3336 | stub_name = _bfd_aarch64_erratum_843419_stub_name (section, ldst_offset); | |
3337 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
3338 | FALSE, FALSE); | |
3339 | if (stub_entry) | |
3340 | { | |
3341 | free (stub_name); | |
3342 | return TRUE; | |
3343 | } | |
3344 | ||
3345 | /* We always place an 843419 workaround veneer in the stub section | |
3346 | attached to the input section in which an erratum sequence has | |
3347 | been found. This ensures that later in the link process (in | |
3348 | elfNN_aarch64_write_section) when we copy the veneered | |
3349 | instruction from the input section into the stub section the | |
3350 | copied instruction will have had any relocations applied to it. | |
3351 | If we placed workaround veneers in any other stub section then we | |
3352 | could not assume that all relocations have been processed on the | |
3353 | corresponding input section at the point we output the stub | |
3354 | section. | |
3355 | */ | |
3356 | ||
3357 | stub_entry = _bfd_aarch64_add_stub_entry_after (stub_name, section, htab); | |
3358 | if (stub_entry == NULL) | |
3359 | { | |
3360 | free (stub_name); | |
3361 | return FALSE; | |
3362 | } | |
3363 | ||
3364 | stub_entry->adrp_offset = adrp_offset; | |
3365 | stub_entry->target_value = ldst_offset; | |
3366 | stub_entry->target_section = section; | |
3367 | stub_entry->stub_type = aarch64_stub_erratum_843419_veneer; | |
3368 | stub_entry->veneered_insn = insn; | |
3369 | stub_entry->output_name = stub_name; | |
3370 | ||
3371 | return TRUE; | |
3372 | } | |
3373 | ||
3374 | ||
3375 | /* Scan an input section looking for the signature of erratum 843419. | |
3376 | ||
3377 | Scans input SECTION in INPUT_BFD looking for erratum 843419 | |
3378 | signatures, for each signature found a stub_entry is created | |
3379 | describing the location of the erratum for subsequent fixup. | |
3380 | ||
3381 | Return TRUE on successful scan, FALSE on failure to scan. | |
3382 | */ | |
3383 | ||
3384 | static bfd_boolean | |
3385 | _bfd_aarch64_erratum_843419_scan (bfd *input_bfd, asection *section, | |
3386 | struct bfd_link_info *info) | |
3387 | { | |
3388 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
3389 | ||
3390 | if (htab == NULL) | |
3391 | return TRUE; | |
3392 | ||
3393 | if (elf_section_type (section) != SHT_PROGBITS | |
3394 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
3395 | || (section->flags & SEC_EXCLUDE) != 0 | |
3396 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
3397 | || (section->output_section == bfd_abs_section_ptr)) | |
3398 | return TRUE; | |
3399 | ||
3400 | do | |
3401 | { | |
3402 | bfd_byte *contents = NULL; | |
3403 | struct _aarch64_elf_section_data *sec_data; | |
3404 | unsigned int span; | |
3405 | ||
3406 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
3407 | contents = elf_section_data (section)->this_hdr.contents; | |
3408 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
3409 | return FALSE; | |
3410 | ||
3411 | sec_data = elf_aarch64_section_data (section); | |
3412 | ||
3413 | qsort (sec_data->map, sec_data->mapcount, | |
3414 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
3415 | ||
3416 | for (span = 0; span < sec_data->mapcount; span++) | |
3417 | { | |
3418 | unsigned int span_start = sec_data->map[span].vma; | |
3419 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
3420 | ? sec_data->map[0].vma + section->size | |
3421 | : sec_data->map[span + 1].vma); | |
3422 | unsigned int i; | |
3423 | char span_type = sec_data->map[span].type; | |
3424 | ||
3425 | if (span_type == 'd') | |
3426 | continue; | |
3427 | ||
3428 | for (i = span_start; i + 8 < span_end; i += 4) | |
3429 | { | |
3430 | bfd_vma vma = (section->output_section->vma | |
3431 | + section->output_offset | |
3432 | + i); | |
3433 | bfd_vma veneer_i; | |
3434 | ||
3435 | if (_bfd_aarch64_erratum_843419_p | |
3436 | (contents, vma, i, span_end, &veneer_i)) | |
3437 | { | |
3438 | uint32_t insn = bfd_getl32 (contents + veneer_i); | |
3439 | ||
3440 | if (!_bfd_aarch64_erratum_843419_fixup (insn, i, veneer_i, | |
3441 | section, info)) | |
3442 | return FALSE; | |
3443 | } | |
3444 | } | |
3445 | } | |
3446 | ||
3447 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
3448 | free (contents); | |
61865519 | 3449 | } |
4106101c MS |
3450 | while (0); |
3451 | ||
3452 | return TRUE; | |
61865519 | 3453 | } |
13f622ec | 3454 | |
4106101c | 3455 | |
a06ea964 NC |
3456 | /* Determine and set the size of the stub section for a final link. |
3457 | ||
3458 | The basic idea here is to examine all the relocations looking for | |
3459 | PC-relative calls to a target that is unreachable with a "bl" | |
3460 | instruction. */ | |
3461 | ||
3462 | bfd_boolean | |
cec5225b | 3463 | elfNN_aarch64_size_stubs (bfd *output_bfd, |
a06ea964 NC |
3464 | bfd *stub_bfd, |
3465 | struct bfd_link_info *info, | |
3466 | bfd_signed_vma group_size, | |
3467 | asection * (*add_stub_section) (const char *, | |
3468 | asection *), | |
3469 | void (*layout_sections_again) (void)) | |
3470 | { | |
3471 | bfd_size_type stub_group_size; | |
3472 | bfd_boolean stubs_always_before_branch; | |
5421cc6e | 3473 | bfd_boolean stub_changed = FALSE; |
cec5225b | 3474 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); |
68fcca92 | 3475 | unsigned int num_erratum_835769_fixes = 0; |
a06ea964 NC |
3476 | |
3477 | /* Propagate mach to stub bfd, because it may not have been | |
3478 | finalized when we created stub_bfd. */ | |
3479 | bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd), | |
3480 | bfd_get_mach (output_bfd)); | |
3481 | ||
3482 | /* Stash our params away. */ | |
3483 | htab->stub_bfd = stub_bfd; | |
3484 | htab->add_stub_section = add_stub_section; | |
3485 | htab->layout_sections_again = layout_sections_again; | |
3486 | stubs_always_before_branch = group_size < 0; | |
3487 | if (group_size < 0) | |
3488 | stub_group_size = -group_size; | |
3489 | else | |
3490 | stub_group_size = group_size; | |
3491 | ||
3492 | if (stub_group_size == 1) | |
3493 | { | |
3494 | /* Default values. */ | |
b9eead84 | 3495 | /* AArch64 branch range is +-128MB. The value used is 1MB less. */ |
a06ea964 NC |
3496 | stub_group_size = 127 * 1024 * 1024; |
3497 | } | |
3498 | ||
3499 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
3500 | ||
4106101c MS |
3501 | (*htab->layout_sections_again) (); |
3502 | ||
5421cc6e MS |
3503 | if (htab->fix_erratum_835769) |
3504 | { | |
3505 | bfd *input_bfd; | |
3506 | ||
3507 | for (input_bfd = info->input_bfds; | |
3508 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
3509 | if (!_bfd_aarch64_erratum_835769_scan (input_bfd, info, | |
3510 | &num_erratum_835769_fixes)) | |
3511 | return FALSE; | |
3512 | ||
4106101c MS |
3513 | _bfd_aarch64_resize_stubs (htab); |
3514 | (*htab->layout_sections_again) (); | |
3515 | } | |
3516 | ||
3517 | if (htab->fix_erratum_843419) | |
3518 | { | |
3519 | bfd *input_bfd; | |
3520 | ||
3521 | for (input_bfd = info->input_bfds; | |
3522 | input_bfd != NULL; | |
3523 | input_bfd = input_bfd->link.next) | |
3524 | { | |
3525 | asection *section; | |
3526 | ||
3527 | for (section = input_bfd->sections; | |
3528 | section != NULL; | |
3529 | section = section->next) | |
3530 | if (!_bfd_aarch64_erratum_843419_scan (input_bfd, section, info)) | |
3531 | return FALSE; | |
3532 | } | |
3533 | ||
3534 | _bfd_aarch64_resize_stubs (htab); | |
3535 | (*htab->layout_sections_again) (); | |
5421cc6e MS |
3536 | } |
3537 | ||
a06ea964 NC |
3538 | while (1) |
3539 | { | |
3540 | bfd *input_bfd; | |
a06ea964 | 3541 | |
9b9971aa MS |
3542 | for (input_bfd = info->input_bfds; |
3543 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
a06ea964 NC |
3544 | { |
3545 | Elf_Internal_Shdr *symtab_hdr; | |
3546 | asection *section; | |
3547 | Elf_Internal_Sym *local_syms = NULL; | |
3548 | ||
3549 | /* We'll need the symbol table in a second. */ | |
3550 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3551 | if (symtab_hdr->sh_info == 0) | |
3552 | continue; | |
3553 | ||
3554 | /* Walk over each section attached to the input bfd. */ | |
3555 | for (section = input_bfd->sections; | |
3556 | section != NULL; section = section->next) | |
3557 | { | |
3558 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
3559 | ||
3560 | /* If there aren't any relocs, then there's nothing more | |
3561 | to do. */ | |
3562 | if ((section->flags & SEC_RELOC) == 0 | |
3563 | || section->reloc_count == 0 | |
3564 | || (section->flags & SEC_CODE) == 0) | |
3565 | continue; | |
3566 | ||
3567 | /* If this section is a link-once section that will be | |
3568 | discarded, then don't create any stubs. */ | |
3569 | if (section->output_section == NULL | |
3570 | || section->output_section->owner != output_bfd) | |
3571 | continue; | |
3572 | ||
3573 | /* Get the relocs. */ | |
3574 | internal_relocs | |
3575 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, | |
3576 | NULL, info->keep_memory); | |
3577 | if (internal_relocs == NULL) | |
3578 | goto error_ret_free_local; | |
3579 | ||
3580 | /* Now examine each relocation. */ | |
3581 | irela = internal_relocs; | |
3582 | irelaend = irela + section->reloc_count; | |
3583 | for (; irela < irelaend; irela++) | |
3584 | { | |
3585 | unsigned int r_type, r_indx; | |
cec5225b YZ |
3586 | enum elf_aarch64_stub_type stub_type; |
3587 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
a06ea964 NC |
3588 | asection *sym_sec; |
3589 | bfd_vma sym_value; | |
3590 | bfd_vma destination; | |
cec5225b | 3591 | struct elf_aarch64_link_hash_entry *hash; |
a06ea964 NC |
3592 | const char *sym_name; |
3593 | char *stub_name; | |
3594 | const asection *id_sec; | |
3595 | unsigned char st_type; | |
3596 | bfd_size_type len; | |
3597 | ||
cec5225b YZ |
3598 | r_type = ELFNN_R_TYPE (irela->r_info); |
3599 | r_indx = ELFNN_R_SYM (irela->r_info); | |
a06ea964 NC |
3600 | |
3601 | if (r_type >= (unsigned int) R_AARCH64_end) | |
3602 | { | |
3603 | bfd_set_error (bfd_error_bad_value); | |
3604 | error_ret_free_internal: | |
3605 | if (elf_section_data (section)->relocs == NULL) | |
3606 | free (internal_relocs); | |
3607 | goto error_ret_free_local; | |
3608 | } | |
3609 | ||
3610 | /* Only look for stubs on unconditional branch and | |
3611 | branch and link instructions. */ | |
a6bb11b2 YZ |
3612 | if (r_type != (unsigned int) AARCH64_R (CALL26) |
3613 | && r_type != (unsigned int) AARCH64_R (JUMP26)) | |
a06ea964 NC |
3614 | continue; |
3615 | ||
3616 | /* Now determine the call target, its name, value, | |
3617 | section. */ | |
3618 | sym_sec = NULL; | |
3619 | sym_value = 0; | |
3620 | destination = 0; | |
3621 | hash = NULL; | |
3622 | sym_name = NULL; | |
3623 | if (r_indx < symtab_hdr->sh_info) | |
3624 | { | |
3625 | /* It's a local symbol. */ | |
3626 | Elf_Internal_Sym *sym; | |
3627 | Elf_Internal_Shdr *hdr; | |
3628 | ||
3629 | if (local_syms == NULL) | |
3630 | { | |
3631 | local_syms | |
3632 | = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3633 | if (local_syms == NULL) | |
3634 | local_syms | |
3635 | = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
3636 | symtab_hdr->sh_info, 0, | |
3637 | NULL, NULL, NULL); | |
3638 | if (local_syms == NULL) | |
3639 | goto error_ret_free_internal; | |
3640 | } | |
3641 | ||
3642 | sym = local_syms + r_indx; | |
3643 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
3644 | sym_sec = hdr->bfd_section; | |
3645 | if (!sym_sec) | |
3646 | /* This is an undefined symbol. It can never | |
3647 | be resolved. */ | |
3648 | continue; | |
3649 | ||
3650 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
3651 | sym_value = sym->st_value; | |
3652 | destination = (sym_value + irela->r_addend | |
3653 | + sym_sec->output_offset | |
3654 | + sym_sec->output_section->vma); | |
3655 | st_type = ELF_ST_TYPE (sym->st_info); | |
3656 | sym_name | |
3657 | = bfd_elf_string_from_elf_section (input_bfd, | |
3658 | symtab_hdr->sh_link, | |
3659 | sym->st_name); | |
3660 | } | |
3661 | else | |
3662 | { | |
3663 | int e_indx; | |
3664 | ||
3665 | e_indx = r_indx - symtab_hdr->sh_info; | |
cec5225b | 3666 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
3667 | elf_sym_hashes (input_bfd)[e_indx]); |
3668 | ||
3669 | while (hash->root.root.type == bfd_link_hash_indirect | |
3670 | || hash->root.root.type == bfd_link_hash_warning) | |
cec5225b | 3671 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
3672 | hash->root.root.u.i.link); |
3673 | ||
3674 | if (hash->root.root.type == bfd_link_hash_defined | |
3675 | || hash->root.root.type == bfd_link_hash_defweak) | |
3676 | { | |
cec5225b YZ |
3677 | struct elf_aarch64_link_hash_table *globals = |
3678 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
3679 | sym_sec = hash->root.root.u.def.section; |
3680 | sym_value = hash->root.root.u.def.value; | |
3681 | /* For a destination in a shared library, | |
3682 | use the PLT stub as target address to | |
3683 | decide whether a branch stub is | |
3684 | needed. */ | |
3685 | if (globals->root.splt != NULL && hash != NULL | |
3686 | && hash->root.plt.offset != (bfd_vma) - 1) | |
3687 | { | |
3688 | sym_sec = globals->root.splt; | |
3689 | sym_value = hash->root.plt.offset; | |
3690 | if (sym_sec->output_section != NULL) | |
3691 | destination = (sym_value | |
3692 | + sym_sec->output_offset | |
3693 | + | |
3694 | sym_sec->output_section->vma); | |
3695 | } | |
3696 | else if (sym_sec->output_section != NULL) | |
3697 | destination = (sym_value + irela->r_addend | |
3698 | + sym_sec->output_offset | |
3699 | + sym_sec->output_section->vma); | |
3700 | } | |
3701 | else if (hash->root.root.type == bfd_link_hash_undefined | |
3702 | || (hash->root.root.type | |
3703 | == bfd_link_hash_undefweak)) | |
3704 | { | |
3705 | /* For a shared library, use the PLT stub as | |
3706 | target address to decide whether a long | |
3707 | branch stub is needed. | |
3708 | For absolute code, they cannot be handled. */ | |
cec5225b YZ |
3709 | struct elf_aarch64_link_hash_table *globals = |
3710 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
3711 | |
3712 | if (globals->root.splt != NULL && hash != NULL | |
3713 | && hash->root.plt.offset != (bfd_vma) - 1) | |
3714 | { | |
3715 | sym_sec = globals->root.splt; | |
3716 | sym_value = hash->root.plt.offset; | |
3717 | if (sym_sec->output_section != NULL) | |
3718 | destination = (sym_value | |
3719 | + sym_sec->output_offset | |
3720 | + | |
3721 | sym_sec->output_section->vma); | |
3722 | } | |
3723 | else | |
3724 | continue; | |
3725 | } | |
3726 | else | |
3727 | { | |
3728 | bfd_set_error (bfd_error_bad_value); | |
3729 | goto error_ret_free_internal; | |
3730 | } | |
3731 | st_type = ELF_ST_TYPE (hash->root.type); | |
3732 | sym_name = hash->root.root.root.string; | |
3733 | } | |
3734 | ||
3735 | /* Determine what (if any) linker stub is needed. */ | |
3736 | stub_type = aarch64_type_of_stub | |
3737 | (info, section, irela, st_type, hash, destination); | |
3738 | if (stub_type == aarch64_stub_none) | |
3739 | continue; | |
3740 | ||
3741 | /* Support for grouping stub sections. */ | |
3742 | id_sec = htab->stub_group[section->id].link_sec; | |
3743 | ||
3744 | /* Get the name of this stub. */ | |
cec5225b | 3745 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, hash, |
a06ea964 NC |
3746 | irela); |
3747 | if (!stub_name) | |
3748 | goto error_ret_free_internal; | |
3749 | ||
3750 | stub_entry = | |
3751 | aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
3752 | stub_name, FALSE, FALSE); | |
3753 | if (stub_entry != NULL) | |
3754 | { | |
3755 | /* The proper stub has already been created. */ | |
3756 | free (stub_name); | |
3757 | continue; | |
3758 | } | |
3759 | ||
ef857521 MS |
3760 | stub_entry = _bfd_aarch64_add_stub_entry_in_group |
3761 | (stub_name, section, htab); | |
a06ea964 NC |
3762 | if (stub_entry == NULL) |
3763 | { | |
3764 | free (stub_name); | |
3765 | goto error_ret_free_internal; | |
3766 | } | |
3767 | ||
3768 | stub_entry->target_value = sym_value; | |
3769 | stub_entry->target_section = sym_sec; | |
3770 | stub_entry->stub_type = stub_type; | |
3771 | stub_entry->h = hash; | |
3772 | stub_entry->st_type = st_type; | |
3773 | ||
3774 | if (sym_name == NULL) | |
3775 | sym_name = "unnamed"; | |
3776 | len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name); | |
3777 | stub_entry->output_name = bfd_alloc (htab->stub_bfd, len); | |
3778 | if (stub_entry->output_name == NULL) | |
3779 | { | |
3780 | free (stub_name); | |
3781 | goto error_ret_free_internal; | |
3782 | } | |
3783 | ||
3784 | snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME, | |
3785 | sym_name); | |
3786 | ||
3787 | stub_changed = TRUE; | |
3788 | } | |
3789 | ||
3790 | /* We're done with the internal relocs, free them. */ | |
3791 | if (elf_section_data (section)->relocs == NULL) | |
3792 | free (internal_relocs); | |
3793 | } | |
3794 | } | |
3795 | ||
3796 | if (!stub_changed) | |
3797 | break; | |
3798 | ||
13f622ec | 3799 | _bfd_aarch64_resize_stubs (htab); |
a06ea964 NC |
3800 | |
3801 | /* Ask the linker to do its stuff. */ | |
3802 | (*htab->layout_sections_again) (); | |
3803 | stub_changed = FALSE; | |
3804 | } | |
3805 | ||
3806 | return TRUE; | |
3807 | ||
3808 | error_ret_free_local: | |
3809 | return FALSE; | |
3810 | } | |
3811 | ||
3812 | /* Build all the stubs associated with the current output file. The | |
3813 | stubs are kept in a hash table attached to the main linker hash | |
3814 | table. We also set up the .plt entries for statically linked PIC | |
3815 | functions here. This function is called via aarch64_elf_finish in the | |
3816 | linker. */ | |
3817 | ||
3818 | bfd_boolean | |
cec5225b | 3819 | elfNN_aarch64_build_stubs (struct bfd_link_info *info) |
a06ea964 NC |
3820 | { |
3821 | asection *stub_sec; | |
3822 | struct bfd_hash_table *table; | |
cec5225b | 3823 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 3824 | |
cec5225b | 3825 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
3826 | |
3827 | for (stub_sec = htab->stub_bfd->sections; | |
3828 | stub_sec != NULL; stub_sec = stub_sec->next) | |
3829 | { | |
3830 | bfd_size_type size; | |
3831 | ||
3832 | /* Ignore non-stub sections. */ | |
3833 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
3834 | continue; | |
3835 | ||
3836 | /* Allocate memory to hold the linker stubs. */ | |
3837 | size = stub_sec->size; | |
3838 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); | |
3839 | if (stub_sec->contents == NULL && size != 0) | |
3840 | return FALSE; | |
3841 | stub_sec->size = 0; | |
61865519 MS |
3842 | |
3843 | bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents); | |
3844 | stub_sec->size += 4; | |
a06ea964 NC |
3845 | } |
3846 | ||
3847 | /* Build the stubs as directed by the stub hash table. */ | |
3848 | table = &htab->stub_hash_table; | |
3849 | bfd_hash_traverse (table, aarch64_build_one_stub, info); | |
3850 | ||
3851 | return TRUE; | |
3852 | } | |
3853 | ||
3854 | ||
3855 | /* Add an entry to the code/data map for section SEC. */ | |
3856 | ||
3857 | static void | |
cec5225b | 3858 | elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma) |
a06ea964 NC |
3859 | { |
3860 | struct _aarch64_elf_section_data *sec_data = | |
cec5225b | 3861 | elf_aarch64_section_data (sec); |
a06ea964 NC |
3862 | unsigned int newidx; |
3863 | ||
3864 | if (sec_data->map == NULL) | |
3865 | { | |
cec5225b | 3866 | sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
3867 | sec_data->mapcount = 0; |
3868 | sec_data->mapsize = 1; | |
3869 | } | |
3870 | ||
3871 | newidx = sec_data->mapcount++; | |
3872 | ||
3873 | if (sec_data->mapcount > sec_data->mapsize) | |
3874 | { | |
3875 | sec_data->mapsize *= 2; | |
3876 | sec_data->map = bfd_realloc_or_free | |
cec5225b | 3877 | (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
3878 | } |
3879 | ||
3880 | if (sec_data->map) | |
3881 | { | |
3882 | sec_data->map[newidx].vma = vma; | |
3883 | sec_data->map[newidx].type = type; | |
3884 | } | |
3885 | } | |
3886 | ||
3887 | ||
3888 | /* Initialise maps of insn/data for input BFDs. */ | |
3889 | void | |
cec5225b | 3890 | bfd_elfNN_aarch64_init_maps (bfd *abfd) |
a06ea964 NC |
3891 | { |
3892 | Elf_Internal_Sym *isymbuf; | |
3893 | Elf_Internal_Shdr *hdr; | |
3894 | unsigned int i, localsyms; | |
3895 | ||
3896 | /* Make sure that we are dealing with an AArch64 elf binary. */ | |
3897 | if (!is_aarch64_elf (abfd)) | |
3898 | return; | |
3899 | ||
3900 | if ((abfd->flags & DYNAMIC) != 0) | |
68fcca92 | 3901 | return; |
a06ea964 NC |
3902 | |
3903 | hdr = &elf_symtab_hdr (abfd); | |
3904 | localsyms = hdr->sh_info; | |
3905 | ||
3906 | /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field | |
3907 | should contain the number of local symbols, which should come before any | |
3908 | global symbols. Mapping symbols are always local. */ | |
3909 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL); | |
3910 | ||
3911 | /* No internal symbols read? Skip this BFD. */ | |
3912 | if (isymbuf == NULL) | |
3913 | return; | |
3914 | ||
3915 | for (i = 0; i < localsyms; i++) | |
3916 | { | |
3917 | Elf_Internal_Sym *isym = &isymbuf[i]; | |
3918 | asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
3919 | const char *name; | |
3920 | ||
3921 | if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL) | |
3922 | { | |
3923 | name = bfd_elf_string_from_elf_section (abfd, | |
3924 | hdr->sh_link, | |
3925 | isym->st_name); | |
3926 | ||
3927 | if (bfd_is_aarch64_special_symbol_name | |
3928 | (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP)) | |
cec5225b | 3929 | elfNN_aarch64_section_map_add (sec, name[1], isym->st_value); |
a06ea964 NC |
3930 | } |
3931 | } | |
3932 | } | |
3933 | ||
3934 | /* Set option values needed during linking. */ | |
3935 | void | |
cec5225b | 3936 | bfd_elfNN_aarch64_set_options (struct bfd *output_bfd, |
a06ea964 NC |
3937 | struct bfd_link_info *link_info, |
3938 | int no_enum_warn, | |
68fcca92 | 3939 | int no_wchar_warn, int pic_veneer, |
4106101c MS |
3940 | int fix_erratum_835769, |
3941 | int fix_erratum_843419) | |
a06ea964 | 3942 | { |
cec5225b | 3943 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 3944 | |
cec5225b | 3945 | globals = elf_aarch64_hash_table (link_info); |
a06ea964 | 3946 | globals->pic_veneer = pic_veneer; |
68fcca92 | 3947 | globals->fix_erratum_835769 = fix_erratum_835769; |
4106101c MS |
3948 | globals->fix_erratum_843419 = fix_erratum_843419; |
3949 | globals->fix_erratum_843419_adr = TRUE; | |
a06ea964 NC |
3950 | |
3951 | BFD_ASSERT (is_aarch64_elf (output_bfd)); | |
3952 | elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn; | |
3953 | elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn; | |
3954 | } | |
3955 | ||
a06ea964 NC |
3956 | static bfd_vma |
3957 | aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h, | |
cec5225b | 3958 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
3959 | *globals, struct bfd_link_info *info, |
3960 | bfd_vma value, bfd *output_bfd, | |
3961 | bfd_boolean *unresolved_reloc_p) | |
3962 | { | |
3963 | bfd_vma off = (bfd_vma) - 1; | |
3964 | asection *basegot = globals->root.sgot; | |
3965 | bfd_boolean dyn = globals->root.dynamic_sections_created; | |
3966 | ||
3967 | if (h != NULL) | |
3968 | { | |
a6bb11b2 | 3969 | BFD_ASSERT (basegot != NULL); |
a06ea964 NC |
3970 | off = h->got.offset; |
3971 | BFD_ASSERT (off != (bfd_vma) - 1); | |
3972 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
3973 | || (info->shared | |
3974 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
3975 | || (ELF_ST_VISIBILITY (h->other) | |
3976 | && h->root.type == bfd_link_hash_undefweak)) | |
3977 | { | |
3978 | /* This is actually a static link, or it is a -Bsymbolic link | |
3979 | and the symbol is defined locally. We must initialize this | |
3980 | entry in the global offset table. Since the offset must | |
a6bb11b2 YZ |
3981 | always be a multiple of 8 (4 in the case of ILP32), we use |
3982 | the least significant bit to record whether we have | |
3983 | initialized it already. | |
a06ea964 NC |
3984 | When doing a dynamic link, we create a .rel(a).got relocation |
3985 | entry to initialize the value. This is done in the | |
3986 | finish_dynamic_symbol routine. */ | |
3987 | if ((off & 1) != 0) | |
3988 | off &= ~1; | |
3989 | else | |
3990 | { | |
cec5225b | 3991 | bfd_put_NN (output_bfd, value, basegot->contents + off); |
a06ea964 NC |
3992 | h->got.offset |= 1; |
3993 | } | |
3994 | } | |
3995 | else | |
3996 | *unresolved_reloc_p = FALSE; | |
3997 | ||
3998 | off = off + basegot->output_section->vma + basegot->output_offset; | |
3999 | } | |
4000 | ||
4001 | return off; | |
4002 | } | |
4003 | ||
4004 | /* Change R_TYPE to a more efficient access model where possible, | |
4005 | return the new reloc type. */ | |
4006 | ||
a6bb11b2 YZ |
4007 | static bfd_reloc_code_real_type |
4008 | aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type, | |
a06ea964 NC |
4009 | struct elf_link_hash_entry *h) |
4010 | { | |
4011 | bfd_boolean is_local = h == NULL; | |
a6bb11b2 | 4012 | |
a06ea964 NC |
4013 | switch (r_type) |
4014 | { | |
a6bb11b2 | 4015 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 4016 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a6bb11b2 YZ |
4017 | return (is_local |
4018 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4019 | : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21); | |
4020 | ||
389b8029 MS |
4021 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
4022 | return (is_local | |
4023 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4024 | : r_type); | |
4025 | ||
1ada945d MS |
4026 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
4027 | return (is_local | |
4028 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4029 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4030 | ||
a6bb11b2 | 4031 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
ce336788 | 4032 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 YZ |
4033 | return (is_local |
4034 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4035 | : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC); | |
4036 | ||
4037 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: | |
4038 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type; | |
4039 | ||
4040 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
4041 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type; | |
4042 | ||
043bf05a MS |
4043 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
4044 | return r_type; | |
4045 | ||
3c12b054 MS |
4046 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
4047 | return (is_local | |
4048 | ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 | |
4049 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4050 | ||
a6bb11b2 YZ |
4051 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
4052 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
a06ea964 | 4053 | /* Instructions with these relocations will become NOPs. */ |
a6bb11b2 YZ |
4054 | return BFD_RELOC_AARCH64_NONE; |
4055 | ||
4056 | default: | |
4057 | break; | |
a06ea964 NC |
4058 | } |
4059 | ||
4060 | return r_type; | |
4061 | } | |
4062 | ||
4063 | static unsigned int | |
a6bb11b2 | 4064 | aarch64_reloc_got_type (bfd_reloc_code_real_type r_type) |
a06ea964 NC |
4065 | { |
4066 | switch (r_type) | |
4067 | { | |
a6bb11b2 YZ |
4068 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
4069 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 4070 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 4071 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 4072 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 4073 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
a06ea964 NC |
4074 | return GOT_NORMAL; |
4075 | ||
ce336788 | 4076 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 4077 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 4078 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a06ea964 NC |
4079 | return GOT_TLS_GD; |
4080 | ||
a6bb11b2 YZ |
4081 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
4082 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
389b8029 | 4083 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 4084 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a6bb11b2 | 4085 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
ce336788 | 4086 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: |
1ada945d | 4087 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
4088 | return GOT_TLSDESC_GD; |
4089 | ||
a6bb11b2 | 4090 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 4091 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 4092 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 4093 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
a06ea964 NC |
4094 | return GOT_TLS_IE; |
4095 | ||
a6bb11b2 YZ |
4096 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
4097 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: | |
4098 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: | |
4099 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: | |
4100 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
4101 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: | |
4102 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
4103 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
a06ea964 | 4104 | return GOT_UNKNOWN; |
a6bb11b2 YZ |
4105 | |
4106 | default: | |
4107 | break; | |
a06ea964 NC |
4108 | } |
4109 | return GOT_UNKNOWN; | |
4110 | } | |
4111 | ||
4112 | static bfd_boolean | |
4113 | aarch64_can_relax_tls (bfd *input_bfd, | |
4114 | struct bfd_link_info *info, | |
a6bb11b2 | 4115 | bfd_reloc_code_real_type r_type, |
a06ea964 NC |
4116 | struct elf_link_hash_entry *h, |
4117 | unsigned long r_symndx) | |
4118 | { | |
4119 | unsigned int symbol_got_type; | |
4120 | unsigned int reloc_got_type; | |
4121 | ||
4122 | if (! IS_AARCH64_TLS_RELOC (r_type)) | |
4123 | return FALSE; | |
4124 | ||
cec5225b | 4125 | symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx); |
a06ea964 NC |
4126 | reloc_got_type = aarch64_reloc_got_type (r_type); |
4127 | ||
4128 | if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type)) | |
4129 | return TRUE; | |
4130 | ||
4131 | if (info->shared) | |
4132 | return FALSE; | |
4133 | ||
4134 | if (h && h->root.type == bfd_link_hash_undefweak) | |
4135 | return FALSE; | |
4136 | ||
4137 | return TRUE; | |
4138 | } | |
4139 | ||
a6bb11b2 YZ |
4140 | /* Given the relocation code R_TYPE, return the relaxed bfd reloc |
4141 | enumerator. */ | |
4142 | ||
4143 | static bfd_reloc_code_real_type | |
a06ea964 NC |
4144 | aarch64_tls_transition (bfd *input_bfd, |
4145 | struct bfd_link_info *info, | |
4146 | unsigned int r_type, | |
4147 | struct elf_link_hash_entry *h, | |
4148 | unsigned long r_symndx) | |
4149 | { | |
a6bb11b2 YZ |
4150 | bfd_reloc_code_real_type bfd_r_type |
4151 | = elfNN_aarch64_bfd_reloc_from_type (r_type); | |
a06ea964 | 4152 | |
a6bb11b2 YZ |
4153 | if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx)) |
4154 | return bfd_r_type; | |
4155 | ||
4156 | return aarch64_tls_transition_without_check (bfd_r_type, h); | |
a06ea964 NC |
4157 | } |
4158 | ||
4159 | /* Return the base VMA address which should be subtracted from real addresses | |
a6bb11b2 | 4160 | when resolving R_AARCH64_TLS_DTPREL relocation. */ |
a06ea964 NC |
4161 | |
4162 | static bfd_vma | |
4163 | dtpoff_base (struct bfd_link_info *info) | |
4164 | { | |
4165 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
4166 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); | |
4167 | return elf_hash_table (info)->tls_sec->vma; | |
4168 | } | |
4169 | ||
a06ea964 NC |
4170 | /* Return the base VMA address which should be subtracted from real addresses |
4171 | when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */ | |
4172 | ||
4173 | static bfd_vma | |
4174 | tpoff_base (struct bfd_link_info *info) | |
4175 | { | |
4176 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
4177 | ||
4178 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
ac21917f | 4179 | BFD_ASSERT (htab->tls_sec != NULL); |
a06ea964 NC |
4180 | |
4181 | bfd_vma base = align_power ((bfd_vma) TCB_SIZE, | |
4182 | htab->tls_sec->alignment_power); | |
4183 | return htab->tls_sec->vma - base; | |
4184 | } | |
4185 | ||
4186 | static bfd_vma * | |
4187 | symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4188 | unsigned long r_symndx) | |
4189 | { | |
4190 | /* Calculate the address of the GOT entry for symbol | |
4191 | referred to in h. */ | |
4192 | if (h != NULL) | |
4193 | return &h->got.offset; | |
4194 | else | |
4195 | { | |
4196 | /* local symbol */ | |
4197 | struct elf_aarch64_local_symbol *l; | |
4198 | ||
cec5225b | 4199 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
4200 | return &l[r_symndx].got_offset; |
4201 | } | |
4202 | } | |
4203 | ||
4204 | static void | |
4205 | symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4206 | unsigned long r_symndx) | |
4207 | { | |
4208 | bfd_vma *p; | |
4209 | p = symbol_got_offset_ref (input_bfd, h, r_symndx); | |
4210 | *p |= 1; | |
4211 | } | |
4212 | ||
4213 | static int | |
4214 | symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4215 | unsigned long r_symndx) | |
4216 | { | |
4217 | bfd_vma value; | |
4218 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
4219 | return value & 1; | |
4220 | } | |
4221 | ||
4222 | static bfd_vma | |
4223 | symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4224 | unsigned long r_symndx) | |
4225 | { | |
4226 | bfd_vma value; | |
4227 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
4228 | value &= ~1; | |
4229 | return value; | |
4230 | } | |
4231 | ||
4232 | static bfd_vma * | |
4233 | symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4234 | unsigned long r_symndx) | |
4235 | { | |
4236 | /* Calculate the address of the GOT entry for symbol | |
4237 | referred to in h. */ | |
4238 | if (h != NULL) | |
4239 | { | |
cec5225b YZ |
4240 | struct elf_aarch64_link_hash_entry *eh; |
4241 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
4242 | return &eh->tlsdesc_got_jump_table_offset; |
4243 | } | |
4244 | else | |
4245 | { | |
4246 | /* local symbol */ | |
4247 | struct elf_aarch64_local_symbol *l; | |
4248 | ||
cec5225b | 4249 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
4250 | return &l[r_symndx].tlsdesc_got_jump_table_offset; |
4251 | } | |
4252 | } | |
4253 | ||
4254 | static void | |
4255 | symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4256 | unsigned long r_symndx) | |
4257 | { | |
4258 | bfd_vma *p; | |
4259 | p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
4260 | *p |= 1; | |
4261 | } | |
4262 | ||
4263 | static int | |
4264 | symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd, | |
4265 | struct elf_link_hash_entry *h, | |
4266 | unsigned long r_symndx) | |
4267 | { | |
4268 | bfd_vma value; | |
4269 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
4270 | return value & 1; | |
4271 | } | |
4272 | ||
4273 | static bfd_vma | |
4274 | symbol_tlsdesc_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4275 | unsigned long r_symndx) | |
4276 | { | |
4277 | bfd_vma value; | |
4278 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
4279 | value &= ~1; | |
4280 | return value; | |
4281 | } | |
4282 | ||
68fcca92 JW |
4283 | /* Data for make_branch_to_erratum_835769_stub(). */ |
4284 | ||
4285 | struct erratum_835769_branch_to_stub_data | |
4286 | { | |
4106101c | 4287 | struct bfd_link_info *info; |
68fcca92 JW |
4288 | asection *output_section; |
4289 | bfd_byte *contents; | |
4290 | }; | |
4291 | ||
4292 | /* Helper to insert branches to erratum 835769 stubs in the right | |
4293 | places for a particular section. */ | |
4294 | ||
4295 | static bfd_boolean | |
4296 | make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry, | |
4297 | void *in_arg) | |
4298 | { | |
4299 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
4300 | struct erratum_835769_branch_to_stub_data *data; | |
4301 | bfd_byte *contents; | |
4302 | unsigned long branch_insn = 0; | |
4303 | bfd_vma veneered_insn_loc, veneer_entry_loc; | |
4304 | bfd_signed_vma branch_offset; | |
4305 | unsigned int target; | |
4306 | bfd *abfd; | |
4307 | ||
4308 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
4309 | data = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
4310 | ||
4311 | if (stub_entry->target_section != data->output_section | |
4312 | || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer) | |
4313 | return TRUE; | |
4314 | ||
4315 | contents = data->contents; | |
4316 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
4317 | + stub_entry->target_section->output_offset | |
4318 | + stub_entry->target_value; | |
4319 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
4320 | + stub_entry->stub_sec->output_offset | |
4321 | + stub_entry->stub_offset; | |
4322 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
4323 | ||
4324 | abfd = stub_entry->target_section->owner; | |
4325 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4326 | (*_bfd_error_handler) | |
4327 | (_("%B: error: Erratum 835769 stub out " | |
4328 | "of range (input file too large)"), abfd); | |
4329 | ||
4330 | target = stub_entry->target_value; | |
4331 | branch_insn = 0x14000000; | |
4332 | branch_offset >>= 2; | |
4333 | branch_offset &= 0x3ffffff; | |
4334 | branch_insn |= branch_offset; | |
4335 | bfd_putl32 (branch_insn, &contents[target]); | |
4336 | ||
4337 | return TRUE; | |
4338 | } | |
4339 | ||
4106101c MS |
4340 | |
4341 | static bfd_boolean | |
4342 | _bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry, | |
4343 | void *in_arg) | |
4344 | { | |
4345 | struct elf_aarch64_stub_hash_entry *stub_entry | |
4346 | = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
4347 | struct erratum_835769_branch_to_stub_data *data | |
4348 | = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
4349 | struct bfd_link_info *info; | |
4350 | struct elf_aarch64_link_hash_table *htab; | |
4351 | bfd_byte *contents; | |
4352 | asection *section; | |
4353 | bfd *abfd; | |
4354 | bfd_vma place; | |
4355 | uint32_t insn; | |
4356 | ||
4357 | info = data->info; | |
4358 | contents = data->contents; | |
4359 | section = data->output_section; | |
4360 | ||
4361 | htab = elf_aarch64_hash_table (info); | |
4362 | ||
4363 | if (stub_entry->target_section != section | |
4364 | || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer) | |
4365 | return TRUE; | |
4366 | ||
4367 | insn = bfd_getl32 (contents + stub_entry->target_value); | |
4368 | bfd_putl32 (insn, | |
4369 | stub_entry->stub_sec->contents + stub_entry->stub_offset); | |
4370 | ||
4371 | place = (section->output_section->vma + section->output_offset | |
4372 | + stub_entry->adrp_offset); | |
4373 | insn = bfd_getl32 (contents + stub_entry->adrp_offset); | |
4374 | ||
4375 | if ((insn & AARCH64_ADRP_OP_MASK) != AARCH64_ADRP_OP) | |
4376 | abort (); | |
4377 | ||
4378 | bfd_signed_vma imm = | |
4379 | (_bfd_aarch64_sign_extend | |
4380 | ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33) | |
4381 | - (place & 0xfff)); | |
4382 | ||
4383 | if (htab->fix_erratum_843419_adr | |
4384 | && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM)) | |
4385 | { | |
4386 | insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm) | |
4387 | | AARCH64_RT (insn)); | |
4388 | bfd_putl32 (insn, contents + stub_entry->adrp_offset); | |
4389 | } | |
4390 | else | |
4391 | { | |
4392 | bfd_vma veneered_insn_loc; | |
4393 | bfd_vma veneer_entry_loc; | |
4394 | bfd_signed_vma branch_offset; | |
4395 | uint32_t branch_insn; | |
4396 | ||
4397 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
4398 | + stub_entry->target_section->output_offset | |
4399 | + stub_entry->target_value; | |
4400 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
4401 | + stub_entry->stub_sec->output_offset | |
4402 | + stub_entry->stub_offset; | |
4403 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
4404 | ||
4405 | abfd = stub_entry->target_section->owner; | |
4406 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4407 | (*_bfd_error_handler) | |
4408 | (_("%B: error: Erratum 843419 stub out " | |
4409 | "of range (input file too large)"), abfd); | |
4410 | ||
4411 | branch_insn = 0x14000000; | |
4412 | branch_offset >>= 2; | |
4413 | branch_offset &= 0x3ffffff; | |
4414 | branch_insn |= branch_offset; | |
4415 | bfd_putl32 (branch_insn, contents + stub_entry->target_value); | |
4416 | } | |
4417 | return TRUE; | |
4418 | } | |
4419 | ||
4420 | ||
68fcca92 JW |
4421 | static bfd_boolean |
4422 | elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, | |
4423 | struct bfd_link_info *link_info, | |
4424 | asection *sec, | |
4425 | bfd_byte *contents) | |
4426 | ||
4427 | { | |
4428 | struct elf_aarch64_link_hash_table *globals = | |
f872121a | 4429 | elf_aarch64_hash_table (link_info); |
68fcca92 JW |
4430 | |
4431 | if (globals == NULL) | |
4432 | return FALSE; | |
4433 | ||
4434 | /* Fix code to point to erratum 835769 stubs. */ | |
4435 | if (globals->fix_erratum_835769) | |
4436 | { | |
4437 | struct erratum_835769_branch_to_stub_data data; | |
4438 | ||
4106101c | 4439 | data.info = link_info; |
68fcca92 JW |
4440 | data.output_section = sec; |
4441 | data.contents = contents; | |
4442 | bfd_hash_traverse (&globals->stub_hash_table, | |
4443 | make_branch_to_erratum_835769_stub, &data); | |
4444 | } | |
4445 | ||
4106101c MS |
4446 | if (globals->fix_erratum_843419) |
4447 | { | |
4448 | struct erratum_835769_branch_to_stub_data data; | |
4449 | ||
4450 | data.info = link_info; | |
4451 | data.output_section = sec; | |
4452 | data.contents = contents; | |
4453 | bfd_hash_traverse (&globals->stub_hash_table, | |
4454 | _bfd_aarch64_erratum_843419_branch_to_stub, &data); | |
4455 | } | |
4456 | ||
68fcca92 JW |
4457 | return FALSE; |
4458 | } | |
4459 | ||
a06ea964 NC |
4460 | /* Perform a relocation as part of a final link. */ |
4461 | static bfd_reloc_status_type | |
cec5225b | 4462 | elfNN_aarch64_final_link_relocate (reloc_howto_type *howto, |
a06ea964 NC |
4463 | bfd *input_bfd, |
4464 | bfd *output_bfd, | |
4465 | asection *input_section, | |
4466 | bfd_byte *contents, | |
4467 | Elf_Internal_Rela *rel, | |
4468 | bfd_vma value, | |
4469 | struct bfd_link_info *info, | |
4470 | asection *sym_sec, | |
4471 | struct elf_link_hash_entry *h, | |
4472 | bfd_boolean *unresolved_reloc_p, | |
4473 | bfd_boolean save_addend, | |
1419bbe5 WN |
4474 | bfd_vma *saved_addend, |
4475 | Elf_Internal_Sym *sym) | |
a06ea964 | 4476 | { |
1419bbe5 | 4477 | Elf_Internal_Shdr *symtab_hdr; |
a06ea964 | 4478 | unsigned int r_type = howto->type; |
a6bb11b2 YZ |
4479 | bfd_reloc_code_real_type bfd_r_type |
4480 | = elfNN_aarch64_bfd_reloc_from_howto (howto); | |
4481 | bfd_reloc_code_real_type new_bfd_r_type; | |
a06ea964 NC |
4482 | unsigned long r_symndx; |
4483 | bfd_byte *hit_data = contents + rel->r_offset; | |
b53b1bed | 4484 | bfd_vma place, off; |
a06ea964 | 4485 | bfd_signed_vma signed_addend; |
cec5225b | 4486 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 4487 | bfd_boolean weak_undef_p; |
b53b1bed | 4488 | asection *base_got; |
a06ea964 | 4489 | |
cec5225b | 4490 | globals = elf_aarch64_hash_table (info); |
a06ea964 | 4491 | |
1419bbe5 WN |
4492 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
4493 | ||
a06ea964 NC |
4494 | BFD_ASSERT (is_aarch64_elf (input_bfd)); |
4495 | ||
cec5225b | 4496 | r_symndx = ELFNN_R_SYM (rel->r_info); |
a06ea964 NC |
4497 | |
4498 | /* It is possible to have linker relaxations on some TLS access | |
4499 | models. Update our information here. */ | |
a6bb11b2 YZ |
4500 | new_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, h, r_symndx); |
4501 | if (new_bfd_r_type != bfd_r_type) | |
4502 | { | |
4503 | bfd_r_type = new_bfd_r_type; | |
4504 | howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type); | |
4505 | BFD_ASSERT (howto != NULL); | |
4506 | r_type = howto->type; | |
4507 | } | |
a06ea964 NC |
4508 | |
4509 | place = input_section->output_section->vma | |
4510 | + input_section->output_offset + rel->r_offset; | |
4511 | ||
4512 | /* Get addend, accumulating the addend for consecutive relocs | |
4513 | which refer to the same offset. */ | |
4514 | signed_addend = saved_addend ? *saved_addend : 0; | |
4515 | signed_addend += rel->r_addend; | |
4516 | ||
4517 | weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak | |
4518 | : bfd_is_und_section (sym_sec)); | |
a6bb11b2 | 4519 | |
1419bbe5 WN |
4520 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
4521 | it here if it is defined in a non-shared object. */ | |
4522 | if (h != NULL | |
4523 | && h->type == STT_GNU_IFUNC | |
4524 | && h->def_regular) | |
4525 | { | |
4526 | asection *plt; | |
4527 | const char *name; | |
99ad26cb | 4528 | bfd_vma addend = 0; |
1419bbe5 WN |
4529 | |
4530 | if ((input_section->flags & SEC_ALLOC) == 0 | |
4531 | || h->plt.offset == (bfd_vma) -1) | |
4532 | abort (); | |
4533 | ||
4534 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
4535 | plt = globals->root.splt ? globals->root.splt : globals->root.iplt; | |
4536 | value = (plt->output_section->vma + plt->output_offset + h->plt.offset); | |
4537 | ||
4538 | switch (bfd_r_type) | |
4539 | { | |
4540 | default: | |
4541 | if (h->root.root.string) | |
4542 | name = h->root.root.string; | |
4543 | else | |
4544 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
4545 | NULL); | |
4546 | (*_bfd_error_handler) | |
4547 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
4548 | "symbol `%s' isn't handled by %s"), input_bfd, | |
4549 | howto->name, name, __FUNCTION__); | |
4550 | bfd_set_error (bfd_error_bad_value); | |
4551 | return FALSE; | |
4552 | ||
4553 | case BFD_RELOC_AARCH64_NN: | |
4554 | if (rel->r_addend != 0) | |
4555 | { | |
4556 | if (h->root.root.string) | |
4557 | name = h->root.root.string; | |
4558 | else | |
4559 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
4560 | sym, NULL); | |
4561 | (*_bfd_error_handler) | |
4562 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
4563 | "symbol `%s' has non-zero addend: %d"), | |
4564 | input_bfd, howto->name, name, rel->r_addend); | |
4565 | bfd_set_error (bfd_error_bad_value); | |
4566 | return FALSE; | |
4567 | } | |
4568 | ||
4569 | /* Generate dynamic relocation only when there is a | |
4570 | non-GOT reference in a shared object. */ | |
4571 | if (info->shared && h->non_got_ref) | |
4572 | { | |
4573 | Elf_Internal_Rela outrel; | |
4574 | asection *sreloc; | |
4575 | ||
4576 | /* Need a dynamic relocation to get the real function | |
4577 | address. */ | |
4578 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
4579 | info, | |
4580 | input_section, | |
4581 | rel->r_offset); | |
4582 | if (outrel.r_offset == (bfd_vma) -1 | |
4583 | || outrel.r_offset == (bfd_vma) -2) | |
4584 | abort (); | |
4585 | ||
4586 | outrel.r_offset += (input_section->output_section->vma | |
4587 | + input_section->output_offset); | |
4588 | ||
4589 | if (h->dynindx == -1 | |
4590 | || h->forced_local | |
4591 | || info->executable) | |
4592 | { | |
4593 | /* This symbol is resolved locally. */ | |
4594 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
4595 | outrel.r_addend = (h->root.u.def.value | |
4596 | + h->root.u.def.section->output_section->vma | |
4597 | + h->root.u.def.section->output_offset); | |
4598 | } | |
4599 | else | |
4600 | { | |
4601 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); | |
4602 | outrel.r_addend = 0; | |
4603 | } | |
4604 | ||
4605 | sreloc = globals->root.irelifunc; | |
4606 | elf_append_rela (output_bfd, sreloc, &outrel); | |
4607 | ||
4608 | /* If this reloc is against an external symbol, we | |
4609 | do not want to fiddle with the addend. Otherwise, | |
4610 | we need to include the symbol value so that it | |
4611 | becomes an addend for the dynamic reloc. For an | |
4612 | internal symbol, we have updated addend. */ | |
4613 | return bfd_reloc_ok; | |
4614 | } | |
4615 | /* FALLTHROUGH */ | |
1419bbe5 | 4616 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 4617 | case BFD_RELOC_AARCH64_JUMP26: |
1419bbe5 WN |
4618 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
4619 | signed_addend, | |
4620 | weak_undef_p); | |
4621 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, | |
4622 | howto, value); | |
1419bbe5 WN |
4623 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
4624 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 4625 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 4626 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 4627 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 4628 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
1419bbe5 WN |
4629 | base_got = globals->root.sgot; |
4630 | off = h->got.offset; | |
4631 | ||
4632 | if (base_got == NULL) | |
4633 | abort (); | |
4634 | ||
4635 | if (off == (bfd_vma) -1) | |
4636 | { | |
4637 | bfd_vma plt_index; | |
4638 | ||
4639 | /* We can't use h->got.offset here to save state, or | |
4640 | even just remember the offset, as finish_dynamic_symbol | |
4641 | would use that as offset into .got. */ | |
4642 | ||
4643 | if (globals->root.splt != NULL) | |
4644 | { | |
b1ee0cc4 WN |
4645 | plt_index = ((h->plt.offset - globals->plt_header_size) / |
4646 | globals->plt_entry_size); | |
1419bbe5 WN |
4647 | off = (plt_index + 3) * GOT_ENTRY_SIZE; |
4648 | base_got = globals->root.sgotplt; | |
4649 | } | |
4650 | else | |
4651 | { | |
4652 | plt_index = h->plt.offset / globals->plt_entry_size; | |
4653 | off = plt_index * GOT_ENTRY_SIZE; | |
4654 | base_got = globals->root.igotplt; | |
4655 | } | |
4656 | ||
4657 | if (h->dynindx == -1 | |
4658 | || h->forced_local | |
4659 | || info->symbolic) | |
4660 | { | |
4661 | /* This references the local definition. We must | |
4662 | initialize this entry in the global offset table. | |
4663 | Since the offset must always be a multiple of 8, | |
4664 | we use the least significant bit to record | |
4665 | whether we have initialized it already. | |
4666 | ||
4667 | When doing a dynamic link, we create a .rela.got | |
4668 | relocation entry to initialize the value. This | |
4669 | is done in the finish_dynamic_symbol routine. */ | |
4670 | if ((off & 1) != 0) | |
4671 | off &= ~1; | |
4672 | else | |
4673 | { | |
4674 | bfd_put_NN (output_bfd, value, | |
4675 | base_got->contents + off); | |
4676 | /* Note that this is harmless as -1 | 1 still is -1. */ | |
4677 | h->got.offset |= 1; | |
4678 | } | |
4679 | } | |
4680 | value = (base_got->output_section->vma | |
4681 | + base_got->output_offset + off); | |
4682 | } | |
4683 | else | |
4684 | value = aarch64_calculate_got_entry_vma (h, globals, info, | |
4685 | value, output_bfd, | |
4686 | unresolved_reloc_p); | |
7018c030 JW |
4687 | if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
4688 | || bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
99ad26cb JW |
4689 | addend = (globals->root.sgot->output_section->vma |
4690 | + globals->root.sgot->output_offset); | |
1419bbe5 | 4691 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
99ad26cb | 4692 | addend, weak_undef_p); |
1419bbe5 | 4693 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value); |
1419bbe5 | 4694 | case BFD_RELOC_AARCH64_ADD_LO12: |
ce336788 | 4695 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: |
1419bbe5 WN |
4696 | break; |
4697 | } | |
4698 | } | |
4699 | ||
a6bb11b2 | 4700 | switch (bfd_r_type) |
a06ea964 | 4701 | { |
a6bb11b2 YZ |
4702 | case BFD_RELOC_AARCH64_NONE: |
4703 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
a06ea964 NC |
4704 | *unresolved_reloc_p = FALSE; |
4705 | return bfd_reloc_ok; | |
4706 | ||
a6bb11b2 | 4707 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
4708 | |
4709 | /* When generating a shared object or relocatable executable, these | |
4710 | relocations are copied into the output file to be resolved at | |
4711 | run time. */ | |
4712 | if (((info->shared == TRUE) || globals->root.is_relocatable_executable) | |
4713 | && (input_section->flags & SEC_ALLOC) | |
4714 | && (h == NULL | |
4715 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
4716 | || h->root.type != bfd_link_hash_undefweak)) | |
4717 | { | |
4718 | Elf_Internal_Rela outrel; | |
4719 | bfd_byte *loc; | |
4720 | bfd_boolean skip, relocate; | |
4721 | asection *sreloc; | |
4722 | ||
4723 | *unresolved_reloc_p = FALSE; | |
4724 | ||
a06ea964 NC |
4725 | skip = FALSE; |
4726 | relocate = FALSE; | |
4727 | ||
4728 | outrel.r_addend = signed_addend; | |
4729 | outrel.r_offset = | |
4730 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
4731 | rel->r_offset); | |
4732 | if (outrel.r_offset == (bfd_vma) - 1) | |
4733 | skip = TRUE; | |
4734 | else if (outrel.r_offset == (bfd_vma) - 2) | |
4735 | { | |
4736 | skip = TRUE; | |
4737 | relocate = TRUE; | |
4738 | } | |
4739 | ||
4740 | outrel.r_offset += (input_section->output_section->vma | |
4741 | + input_section->output_offset); | |
4742 | ||
4743 | if (skip) | |
4744 | memset (&outrel, 0, sizeof outrel); | |
4745 | else if (h != NULL | |
4746 | && h->dynindx != -1 | |
0941db69 | 4747 | && (!info->shared || !SYMBOLIC_BIND (info, h) || !h->def_regular)) |
cec5225b | 4748 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); |
a06ea964 NC |
4749 | else |
4750 | { | |
4751 | int symbol; | |
4752 | ||
4753 | /* On SVR4-ish systems, the dynamic loader cannot | |
4754 | relocate the text and data segments independently, | |
4755 | so the symbol does not matter. */ | |
4756 | symbol = 0; | |
a6bb11b2 | 4757 | outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE)); |
a06ea964 NC |
4758 | outrel.r_addend += value; |
4759 | } | |
4760 | ||
1419bbe5 WN |
4761 | sreloc = elf_section_data (input_section)->sreloc; |
4762 | if (sreloc == NULL || sreloc->contents == NULL) | |
4763 | return bfd_reloc_notsupported; | |
4764 | ||
4765 | loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals); | |
cec5225b | 4766 | bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc); |
a06ea964 | 4767 | |
1419bbe5 | 4768 | if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size) |
a06ea964 NC |
4769 | { |
4770 | /* Sanity to check that we have previously allocated | |
4771 | sufficient space in the relocation section for the | |
4772 | number of relocations we actually want to emit. */ | |
4773 | abort (); | |
4774 | } | |
4775 | ||
4776 | /* If this reloc is against an external symbol, we do not want to | |
4777 | fiddle with the addend. Otherwise, we need to include the symbol | |
4778 | value so that it becomes an addend for the dynamic reloc. */ | |
4779 | if (!relocate) | |
4780 | return bfd_reloc_ok; | |
4781 | ||
4782 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
4783 | contents, rel->r_offset, value, | |
4784 | signed_addend); | |
4785 | } | |
4786 | else | |
4787 | value += signed_addend; | |
4788 | break; | |
4789 | ||
a6bb11b2 | 4790 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 4791 | case BFD_RELOC_AARCH64_JUMP26: |
a06ea964 NC |
4792 | { |
4793 | asection *splt = globals->root.splt; | |
4794 | bfd_boolean via_plt_p = | |
4795 | splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1; | |
4796 | ||
4797 | /* A call to an undefined weak symbol is converted to a jump to | |
4798 | the next instruction unless a PLT entry will be created. | |
4799 | The jump to the next instruction is optimized as a NOP. | |
4800 | Do the same for local undefined symbols. */ | |
4801 | if (weak_undef_p && ! via_plt_p) | |
4802 | { | |
4803 | bfd_putl32 (INSN_NOP, hit_data); | |
4804 | return bfd_reloc_ok; | |
4805 | } | |
4806 | ||
4807 | /* If the call goes through a PLT entry, make sure to | |
4808 | check distance to the right destination address. */ | |
4809 | if (via_plt_p) | |
4810 | { | |
4811 | value = (splt->output_section->vma | |
4812 | + splt->output_offset + h->plt.offset); | |
4813 | *unresolved_reloc_p = FALSE; | |
4814 | } | |
4815 | ||
4816 | /* If the target symbol is global and marked as a function the | |
4817 | relocation applies a function call or a tail call. In this | |
4818 | situation we can veneer out of range branches. The veneers | |
4819 | use IP0 and IP1 hence cannot be used arbitrary out of range | |
4820 | branches that occur within the body of a function. */ | |
4821 | if (h && h->type == STT_FUNC) | |
4822 | { | |
4823 | /* Check if a stub has to be inserted because the destination | |
4824 | is too far away. */ | |
4825 | if (! aarch64_valid_branch_p (value, place)) | |
4826 | { | |
4827 | /* The target is out of reach, so redirect the branch to | |
4828 | the local stub for this function. */ | |
cec5225b YZ |
4829 | struct elf_aarch64_stub_hash_entry *stub_entry; |
4830 | stub_entry = elfNN_aarch64_get_stub_entry (input_section, | |
a06ea964 NC |
4831 | sym_sec, h, |
4832 | rel, globals); | |
4833 | if (stub_entry != NULL) | |
4834 | value = (stub_entry->stub_offset | |
4835 | + stub_entry->stub_sec->output_offset | |
4836 | + stub_entry->stub_sec->output_section->vma); | |
4837 | } | |
4838 | } | |
4839 | } | |
caed7120 YZ |
4840 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
4841 | signed_addend, weak_undef_p); | |
a06ea964 NC |
4842 | break; |
4843 | ||
dcbd20eb JW |
4844 | case BFD_RELOC_AARCH64_16_PCREL: |
4845 | case BFD_RELOC_AARCH64_32_PCREL: | |
4846 | case BFD_RELOC_AARCH64_64_PCREL: | |
ce336788 JW |
4847 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
4848 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
4849 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
4850 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
dcbd20eb JW |
4851 | if (info->shared |
4852 | && (input_section->flags & SEC_ALLOC) != 0 | |
4853 | && (input_section->flags & SEC_READONLY) != 0 | |
4854 | && h != NULL | |
4855 | && !h->def_regular) | |
4856 | { | |
4857 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
4858 | ||
4859 | (*_bfd_error_handler) | |
4860 | (_("%B: relocation %s against external symbol `%s' can not be used" | |
4861 | " when making a shared object; recompile with -fPIC"), | |
4862 | input_bfd, elfNN_aarch64_howto_table[howto_index].name, | |
4863 | h->root.root.string); | |
4864 | bfd_set_error (bfd_error_bad_value); | |
4865 | return FALSE; | |
4866 | } | |
4867 | ||
a6bb11b2 YZ |
4868 | case BFD_RELOC_AARCH64_16: |
4869 | #if ARCH_SIZE == 64 | |
4870 | case BFD_RELOC_AARCH64_32: | |
4871 | #endif | |
4872 | case BFD_RELOC_AARCH64_ADD_LO12: | |
a6bb11b2 | 4873 | case BFD_RELOC_AARCH64_BRANCH19: |
ce336788 | 4874 | case BFD_RELOC_AARCH64_LDST128_LO12: |
a6bb11b2 YZ |
4875 | case BFD_RELOC_AARCH64_LDST16_LO12: |
4876 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
4877 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
ce336788 | 4878 | case BFD_RELOC_AARCH64_LDST8_LO12: |
a6bb11b2 YZ |
4879 | case BFD_RELOC_AARCH64_MOVW_G0: |
4880 | case BFD_RELOC_AARCH64_MOVW_G0_NC: | |
ce336788 | 4881 | case BFD_RELOC_AARCH64_MOVW_G0_S: |
a6bb11b2 YZ |
4882 | case BFD_RELOC_AARCH64_MOVW_G1: |
4883 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
ce336788 | 4884 | case BFD_RELOC_AARCH64_MOVW_G1_S: |
a6bb11b2 YZ |
4885 | case BFD_RELOC_AARCH64_MOVW_G2: |
4886 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
ce336788 | 4887 | case BFD_RELOC_AARCH64_MOVW_G2_S: |
a6bb11b2 | 4888 | case BFD_RELOC_AARCH64_MOVW_G3: |
a6bb11b2 | 4889 | case BFD_RELOC_AARCH64_TSTBR14: |
caed7120 YZ |
4890 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
4891 | signed_addend, weak_undef_p); | |
a06ea964 NC |
4892 | break; |
4893 | ||
a6bb11b2 YZ |
4894 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
4895 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 4896 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 4897 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 4898 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 4899 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
a06ea964 NC |
4900 | if (globals->root.sgot == NULL) |
4901 | BFD_ASSERT (h != NULL); | |
4902 | ||
4903 | if (h != NULL) | |
4904 | { | |
99ad26cb | 4905 | bfd_vma addend = 0; |
a06ea964 NC |
4906 | value = aarch64_calculate_got_entry_vma (h, globals, info, value, |
4907 | output_bfd, | |
4908 | unresolved_reloc_p); | |
7018c030 JW |
4909 | if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
4910 | || bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
99ad26cb JW |
4911 | addend = (globals->root.sgot->output_section->vma |
4912 | + globals->root.sgot->output_offset); | |
caed7120 | 4913 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
99ad26cb | 4914 | addend, weak_undef_p); |
a06ea964 | 4915 | } |
b53b1bed JW |
4916 | else |
4917 | { | |
99ad26cb | 4918 | bfd_vma addend = 0; |
b53b1bed JW |
4919 | struct elf_aarch64_local_symbol *locals |
4920 | = elf_aarch64_locals (input_bfd); | |
4921 | ||
4922 | if (locals == NULL) | |
4923 | { | |
4924 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
4925 | (*_bfd_error_handler) | |
4926 | (_("%B: Local symbol descriptor table be NULL when applying " | |
4927 | "relocation %s against local symbol"), | |
4928 | input_bfd, elfNN_aarch64_howto_table[howto_index].name); | |
4929 | abort (); | |
4930 | } | |
4931 | ||
4932 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
4933 | base_got = globals->root.sgot; | |
4934 | bfd_vma got_entry_addr = (base_got->output_section->vma | |
4935 | + base_got->output_offset + off); | |
4936 | ||
4937 | if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
4938 | { | |
4939 | bfd_put_64 (output_bfd, value, base_got->contents + off); | |
4940 | ||
4941 | if (info->shared) | |
4942 | { | |
4943 | asection *s; | |
4944 | Elf_Internal_Rela outrel; | |
4945 | ||
4946 | /* For local symbol, we have done absolute relocation in static | |
4947 | linking stageh. While for share library, we need to update | |
4948 | the content of GOT entry according to the share objects | |
4949 | loading base address. So we need to generate a | |
4950 | R_AARCH64_RELATIVE reloc for dynamic linker. */ | |
4951 | s = globals->root.srelgot; | |
4952 | if (s == NULL) | |
4953 | abort (); | |
4954 | ||
4955 | outrel.r_offset = got_entry_addr; | |
4956 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); | |
4957 | outrel.r_addend = value; | |
4958 | elf_append_rela (output_bfd, s, &outrel); | |
4959 | } | |
4960 | ||
4961 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
4962 | } | |
4963 | ||
4964 | /* Update the relocation value to GOT entry addr as we have transformed | |
4965 | the direct data access into indirect data access through GOT. */ | |
4966 | value = got_entry_addr; | |
99ad26cb | 4967 | |
7018c030 JW |
4968 | if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
4969 | || bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
99ad26cb JW |
4970 | addend = base_got->output_section->vma + base_got->output_offset; |
4971 | ||
4972 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, | |
4973 | addend, weak_undef_p); | |
b53b1bed JW |
4974 | } |
4975 | ||
a06ea964 NC |
4976 | break; |
4977 | ||
ce336788 | 4978 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 4979 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 4980 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 4981 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 4982 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 4983 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 4984 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
a06ea964 NC |
4985 | if (globals->root.sgot == NULL) |
4986 | return bfd_reloc_notsupported; | |
4987 | ||
4988 | value = (symbol_got_offset (input_bfd, h, r_symndx) | |
4989 | + globals->root.sgot->output_section->vma | |
f44a1f8e | 4990 | + globals->root.sgot->output_offset); |
a06ea964 | 4991 | |
caed7120 YZ |
4992 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
4993 | 0, weak_undef_p); | |
a06ea964 NC |
4994 | *unresolved_reloc_p = FALSE; |
4995 | break; | |
4996 | ||
a6bb11b2 YZ |
4997 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
4998 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: | |
4999 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: | |
5000 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: | |
5001 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
5002 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: | |
5003 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
5004 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
caed7120 YZ |
5005 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5006 | signed_addend - tpoff_base (info), | |
5007 | weak_undef_p); | |
a06ea964 NC |
5008 | *unresolved_reloc_p = FALSE; |
5009 | break; | |
5010 | ||
7bcccb57 MS |
5011 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
5012 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: | |
a6bb11b2 | 5013 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 5014 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 5015 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
7bcccb57 | 5016 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: |
a6bb11b2 | 5017 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
1ada945d | 5018 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
5019 | if (globals->root.sgot == NULL) |
5020 | return bfd_reloc_notsupported; | |
a06ea964 NC |
5021 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) |
5022 | + globals->root.sgotplt->output_section->vma | |
f44a1f8e | 5023 | + globals->root.sgotplt->output_offset |
a06ea964 NC |
5024 | + globals->sgotplt_jump_table_size); |
5025 | ||
caed7120 YZ |
5026 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5027 | 0, weak_undef_p); | |
a06ea964 NC |
5028 | *unresolved_reloc_p = FALSE; |
5029 | break; | |
5030 | ||
5031 | default: | |
5032 | return bfd_reloc_notsupported; | |
5033 | } | |
5034 | ||
5035 | if (saved_addend) | |
5036 | *saved_addend = value; | |
5037 | ||
5038 | /* Only apply the final relocation in a sequence. */ | |
5039 | if (save_addend) | |
5040 | return bfd_reloc_continue; | |
5041 | ||
caed7120 YZ |
5042 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, |
5043 | howto, value); | |
a06ea964 NC |
5044 | } |
5045 | ||
5046 | /* Handle TLS relaxations. Relaxing is possible for symbols that use | |
5047 | R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static | |
5048 | link. | |
5049 | ||
5050 | Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller | |
5051 | is to then call final_link_relocate. Return other values in the | |
5052 | case of error. */ | |
5053 | ||
5054 | static bfd_reloc_status_type | |
cec5225b | 5055 | elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals, |
a06ea964 NC |
5056 | bfd *input_bfd, bfd_byte *contents, |
5057 | Elf_Internal_Rela *rel, struct elf_link_hash_entry *h) | |
5058 | { | |
5059 | bfd_boolean is_local = h == NULL; | |
cec5225b | 5060 | unsigned int r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
5061 | unsigned long insn; |
5062 | ||
5063 | BFD_ASSERT (globals && input_bfd && contents && rel); | |
5064 | ||
a6bb11b2 | 5065 | switch (elfNN_aarch64_bfd_reloc_from_type (r_type)) |
a06ea964 | 5066 | { |
a6bb11b2 | 5067 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 5068 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a06ea964 NC |
5069 | if (is_local) |
5070 | { | |
5071 | /* GD->LE relaxation: | |
5072 | adrp x0, :tlsgd:var => movz x0, :tprel_g1:var | |
5073 | or | |
5074 | adrp x0, :tlsdesc:var => movz x0, :tprel_g1:var | |
5075 | */ | |
5076 | bfd_putl32 (0xd2a00000, contents + rel->r_offset); | |
5077 | return bfd_reloc_continue; | |
5078 | } | |
5079 | else | |
5080 | { | |
5081 | /* GD->IE relaxation: | |
5082 | adrp x0, :tlsgd:var => adrp x0, :gottprel:var | |
5083 | or | |
5084 | adrp x0, :tlsdesc:var => adrp x0, :gottprel:var | |
5085 | */ | |
a06ea964 NC |
5086 | return bfd_reloc_continue; |
5087 | } | |
5088 | ||
389b8029 MS |
5089 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
5090 | BFD_ASSERT (0); | |
5091 | break; | |
5092 | ||
1ada945d MS |
5093 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
5094 | if (is_local) | |
5095 | { | |
5096 | /* Tiny TLSDESC->LE relaxation: | |
5097 | ldr x1, :tlsdesc:var => movz x0, #:tprel_g1:var | |
5098 | adr x0, :tlsdesc:var => movk x0, #:tprel_g0_nc:var | |
5099 | .tlsdesccall var | |
5100 | blr x1 => nop | |
5101 | */ | |
5102 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); | |
5103 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
5104 | ||
5105 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5106 | AARCH64_R (TLSLE_MOVW_TPREL_G0_NC)); | |
5107 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5108 | ||
5109 | bfd_putl32 (0xd2a00000, contents + rel->r_offset); | |
5110 | bfd_putl32 (0xf2800000, contents + rel->r_offset + 4); | |
5111 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); | |
5112 | return bfd_reloc_continue; | |
5113 | } | |
5114 | else | |
5115 | { | |
5116 | /* Tiny TLSDESC->IE relaxation: | |
5117 | ldr x1, :tlsdesc:var => ldr x0, :gottprel:var | |
5118 | adr x0, :tlsdesc:var => nop | |
5119 | .tlsdesccall var | |
5120 | blr x1 => nop | |
5121 | */ | |
5122 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); | |
5123 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
5124 | ||
5125 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5126 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5127 | ||
5128 | bfd_putl32 (0x58000000, contents + rel->r_offset); | |
5129 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4); | |
5130 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); | |
5131 | return bfd_reloc_continue; | |
5132 | } | |
5133 | ||
3c12b054 MS |
5134 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
5135 | if (is_local) | |
5136 | { | |
5137 | /* Tiny GD->LE relaxation: | |
5138 | adr x0, :tlsgd:var => mrs x1, tpidr_el0 | |
5139 | bl __tls_get_addr => add x0, x1, #:tprel_hi12:x, lsl #12 | |
5140 | nop => add x0, x0, #:tprel_lo12_nc:x | |
5141 | */ | |
5142 | ||
5143 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
5144 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
5145 | ||
5146 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0); | |
5147 | bfd_putl32 (0x91400020, contents + rel->r_offset + 4); | |
5148 | bfd_putl32 (0x91000000, contents + rel->r_offset + 8); | |
5149 | ||
5150 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5151 | AARCH64_R (TLSLE_ADD_TPREL_LO12_NC)); | |
5152 | rel[1].r_offset = rel->r_offset + 8; | |
5153 | ||
5154 | /* Move the current relocation to the second instruction in | |
5155 | the sequence. */ | |
5156 | rel->r_offset += 4; | |
5157 | rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5158 | AARCH64_R (TLSLE_ADD_TPREL_HI12)); | |
5159 | return bfd_reloc_continue; | |
5160 | } | |
5161 | else | |
5162 | { | |
5163 | /* Tiny GD->IE relaxation: | |
5164 | adr x0, :tlsgd:var => ldr x0, :gottprel:var | |
5165 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
5166 | nop => add x0, x0, x1 | |
5167 | */ | |
5168 | ||
5169 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
5170 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
5171 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5172 | ||
5173 | bfd_putl32 (0x58000000, contents + rel->r_offset); | |
5174 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); | |
5175 | bfd_putl32 (0x8b000020, contents + rel->r_offset + 8); | |
5176 | return bfd_reloc_continue; | |
5177 | } | |
5178 | ||
043bf05a MS |
5179 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
5180 | return bfd_reloc_continue; | |
5181 | ||
a6bb11b2 | 5182 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
a06ea964 NC |
5183 | if (is_local) |
5184 | { | |
5185 | /* GD->LE relaxation: | |
5186 | ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var | |
5187 | */ | |
5188 | bfd_putl32 (0xf2800000, contents + rel->r_offset); | |
5189 | return bfd_reloc_continue; | |
5190 | } | |
5191 | else | |
5192 | { | |
5193 | /* GD->IE relaxation: | |
5194 | ldr xd, [x0, #:tlsdesc_lo12:var] => ldr x0, [x0, #:gottprel_lo12:var] | |
5195 | */ | |
5196 | insn = bfd_getl32 (contents + rel->r_offset); | |
fa85fb9a | 5197 | insn &= 0xffffffe0; |
a06ea964 NC |
5198 | bfd_putl32 (insn, contents + rel->r_offset); |
5199 | return bfd_reloc_continue; | |
5200 | } | |
5201 | ||
a6bb11b2 | 5202 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a06ea964 NC |
5203 | if (is_local) |
5204 | { | |
5205 | /* GD->LE relaxation | |
5206 | add x0, #:tlsgd_lo12:var => movk x0, :tprel_g0_nc:var | |
5207 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
5208 | nop => add x0, x1, x0 | |
5209 | */ | |
5210 | ||
5211 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
5212 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
cec5225b | 5213 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 NC |
5214 | |
5215 | bfd_putl32 (0xf2800000, contents + rel->r_offset); | |
5216 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); | |
5217 | bfd_putl32 (0x8b000020, contents + rel->r_offset + 8); | |
5218 | return bfd_reloc_continue; | |
5219 | } | |
5220 | else | |
5221 | { | |
5222 | /* GD->IE relaxation | |
5223 | ADD x0, #:tlsgd_lo12:var => ldr x0, [x0, #:gottprel_lo12:var] | |
5224 | BL __tls_get_addr => mrs x1, tpidr_el0 | |
5225 | R_AARCH64_CALL26 | |
5226 | NOP => add x0, x1, x0 | |
5227 | */ | |
5228 | ||
a6bb11b2 | 5229 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); |
a06ea964 NC |
5230 | |
5231 | /* Remove the relocation on the BL instruction. */ | |
cec5225b | 5232 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 NC |
5233 | |
5234 | bfd_putl32 (0xf9400000, contents + rel->r_offset); | |
5235 | ||
5236 | /* We choose to fixup the BL and NOP instructions using the | |
5237 | offset from the second relocation to allow flexibility in | |
5238 | scheduling instructions between the ADD and BL. */ | |
5239 | bfd_putl32 (0xd53bd041, contents + rel[1].r_offset); | |
5240 | bfd_putl32 (0x8b000020, contents + rel[1].r_offset + 4); | |
5241 | return bfd_reloc_continue; | |
5242 | } | |
5243 | ||
a6bb11b2 YZ |
5244 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
5245 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
a06ea964 NC |
5246 | /* GD->IE/LE relaxation: |
5247 | add x0, x0, #:tlsdesc_lo12:var => nop | |
5248 | blr xd => nop | |
5249 | */ | |
5250 | bfd_putl32 (INSN_NOP, contents + rel->r_offset); | |
5251 | return bfd_reloc_ok; | |
5252 | ||
a6bb11b2 | 5253 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a06ea964 NC |
5254 | /* IE->LE relaxation: |
5255 | adrp xd, :gottprel:var => movz xd, :tprel_g1:var | |
5256 | */ | |
5257 | if (is_local) | |
5258 | { | |
5259 | insn = bfd_getl32 (contents + rel->r_offset); | |
5260 | bfd_putl32 (0xd2a00000 | (insn & 0x1f), contents + rel->r_offset); | |
5261 | } | |
5262 | return bfd_reloc_continue; | |
5263 | ||
a6bb11b2 | 5264 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: |
a06ea964 NC |
5265 | /* IE->LE relaxation: |
5266 | ldr xd, [xm, #:gottprel_lo12:var] => movk xd, :tprel_g0_nc:var | |
5267 | */ | |
5268 | if (is_local) | |
5269 | { | |
5270 | insn = bfd_getl32 (contents + rel->r_offset); | |
5271 | bfd_putl32 (0xf2800000 | (insn & 0x1f), contents + rel->r_offset); | |
5272 | } | |
5273 | return bfd_reloc_continue; | |
5274 | ||
5275 | default: | |
5276 | return bfd_reloc_continue; | |
5277 | } | |
5278 | ||
5279 | return bfd_reloc_ok; | |
5280 | } | |
5281 | ||
5282 | /* Relocate an AArch64 ELF section. */ | |
5283 | ||
5284 | static bfd_boolean | |
cec5225b | 5285 | elfNN_aarch64_relocate_section (bfd *output_bfd, |
a06ea964 NC |
5286 | struct bfd_link_info *info, |
5287 | bfd *input_bfd, | |
5288 | asection *input_section, | |
5289 | bfd_byte *contents, | |
5290 | Elf_Internal_Rela *relocs, | |
5291 | Elf_Internal_Sym *local_syms, | |
5292 | asection **local_sections) | |
5293 | { | |
5294 | Elf_Internal_Shdr *symtab_hdr; | |
5295 | struct elf_link_hash_entry **sym_hashes; | |
5296 | Elf_Internal_Rela *rel; | |
5297 | Elf_Internal_Rela *relend; | |
5298 | const char *name; | |
cec5225b | 5299 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 NC |
5300 | bfd_boolean save_addend = FALSE; |
5301 | bfd_vma addend = 0; | |
5302 | ||
cec5225b | 5303 | globals = elf_aarch64_hash_table (info); |
a06ea964 NC |
5304 | |
5305 | symtab_hdr = &elf_symtab_hdr (input_bfd); | |
5306 | sym_hashes = elf_sym_hashes (input_bfd); | |
5307 | ||
5308 | rel = relocs; | |
5309 | relend = relocs + input_section->reloc_count; | |
5310 | for (; rel < relend; rel++) | |
5311 | { | |
5312 | unsigned int r_type; | |
a6bb11b2 YZ |
5313 | bfd_reloc_code_real_type bfd_r_type; |
5314 | bfd_reloc_code_real_type relaxed_bfd_r_type; | |
a06ea964 NC |
5315 | reloc_howto_type *howto; |
5316 | unsigned long r_symndx; | |
5317 | Elf_Internal_Sym *sym; | |
5318 | asection *sec; | |
5319 | struct elf_link_hash_entry *h; | |
5320 | bfd_vma relocation; | |
5321 | bfd_reloc_status_type r; | |
5322 | arelent bfd_reloc; | |
5323 | char sym_type; | |
5324 | bfd_boolean unresolved_reloc = FALSE; | |
5325 | char *error_message = NULL; | |
5326 | ||
cec5225b YZ |
5327 | r_symndx = ELFNN_R_SYM (rel->r_info); |
5328 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 | 5329 | |
cec5225b | 5330 | bfd_reloc.howto = elfNN_aarch64_howto_from_type (r_type); |
a06ea964 NC |
5331 | howto = bfd_reloc.howto; |
5332 | ||
7fcfd62d NC |
5333 | if (howto == NULL) |
5334 | { | |
5335 | (*_bfd_error_handler) | |
5336 | (_("%B: unrecognized relocation (0x%x) in section `%A'"), | |
5337 | input_bfd, input_section, r_type); | |
5338 | return FALSE; | |
5339 | } | |
a6bb11b2 | 5340 | bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto); |
7fcfd62d | 5341 | |
a06ea964 NC |
5342 | h = NULL; |
5343 | sym = NULL; | |
5344 | sec = NULL; | |
5345 | ||
5346 | if (r_symndx < symtab_hdr->sh_info) | |
5347 | { | |
5348 | sym = local_syms + r_symndx; | |
cec5225b | 5349 | sym_type = ELFNN_ST_TYPE (sym->st_info); |
a06ea964 NC |
5350 | sec = local_sections[r_symndx]; |
5351 | ||
5352 | /* An object file might have a reference to a local | |
5353 | undefined symbol. This is a daft object file, but we | |
5354 | should at least do something about it. */ | |
5355 | if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL | |
5356 | && bfd_is_und_section (sec) | |
5357 | && ELF_ST_BIND (sym->st_info) != STB_WEAK) | |
5358 | { | |
5359 | if (!info->callbacks->undefined_symbol | |
5360 | (info, bfd_elf_string_from_elf_section | |
5361 | (input_bfd, symtab_hdr->sh_link, sym->st_name), | |
5362 | input_bfd, input_section, rel->r_offset, TRUE)) | |
5363 | return FALSE; | |
5364 | } | |
5365 | ||
a06ea964 | 5366 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
1419bbe5 WN |
5367 | |
5368 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
5369 | if (!info->relocatable | |
5370 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
5371 | { | |
5372 | h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd, | |
5373 | rel, FALSE); | |
5374 | if (h == NULL) | |
5375 | abort (); | |
5376 | ||
5377 | /* Set STT_GNU_IFUNC symbol value. */ | |
5378 | h->root.u.def.value = sym->st_value; | |
5379 | h->root.u.def.section = sec; | |
5380 | } | |
a06ea964 NC |
5381 | } |
5382 | else | |
5383 | { | |
62d887d4 | 5384 | bfd_boolean warned, ignored; |
a06ea964 NC |
5385 | |
5386 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
5387 | r_symndx, symtab_hdr, sym_hashes, | |
5388 | h, sec, relocation, | |
62d887d4 | 5389 | unresolved_reloc, warned, ignored); |
a06ea964 NC |
5390 | |
5391 | sym_type = h->type; | |
5392 | } | |
5393 | ||
5394 | if (sec != NULL && discarded_section (sec)) | |
5395 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
5396 | rel, 1, relend, howto, 0, contents); | |
5397 | ||
5398 | if (info->relocatable) | |
2e0488d3 | 5399 | continue; |
a06ea964 NC |
5400 | |
5401 | if (h != NULL) | |
5402 | name = h->root.root.string; | |
5403 | else | |
5404 | { | |
5405 | name = (bfd_elf_string_from_elf_section | |
5406 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
5407 | if (name == NULL || *name == '\0') | |
5408 | name = bfd_section_name (input_bfd, sec); | |
5409 | } | |
5410 | ||
5411 | if (r_symndx != 0 | |
5412 | && r_type != R_AARCH64_NONE | |
5413 | && r_type != R_AARCH64_NULL | |
5414 | && (h == NULL | |
5415 | || h->root.type == bfd_link_hash_defined | |
5416 | || h->root.type == bfd_link_hash_defweak) | |
a6bb11b2 | 5417 | && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS)) |
a06ea964 NC |
5418 | { |
5419 | (*_bfd_error_handler) | |
5420 | ((sym_type == STT_TLS | |
5421 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") | |
5422 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")), | |
5423 | input_bfd, | |
5424 | input_section, (long) rel->r_offset, howto->name, name); | |
5425 | } | |
5426 | ||
a06ea964 NC |
5427 | /* We relax only if we can see that there can be a valid transition |
5428 | from a reloc type to another. | |
cec5225b | 5429 | We call elfNN_aarch64_final_link_relocate unless we're completely |
a06ea964 NC |
5430 | done, i.e., the relaxation produced the final output we want. */ |
5431 | ||
a6bb11b2 YZ |
5432 | relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, |
5433 | h, r_symndx); | |
5434 | if (relaxed_bfd_r_type != bfd_r_type) | |
a06ea964 | 5435 | { |
a6bb11b2 YZ |
5436 | bfd_r_type = relaxed_bfd_r_type; |
5437 | howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type); | |
5438 | BFD_ASSERT (howto != NULL); | |
5439 | r_type = howto->type; | |
cec5225b | 5440 | r = elfNN_aarch64_tls_relax (globals, input_bfd, contents, rel, h); |
a06ea964 NC |
5441 | unresolved_reloc = 0; |
5442 | } | |
5443 | else | |
5444 | r = bfd_reloc_continue; | |
5445 | ||
5446 | /* There may be multiple consecutive relocations for the | |
5447 | same offset. In that case we are supposed to treat the | |
5448 | output of each relocation as the addend for the next. */ | |
5449 | if (rel + 1 < relend | |
5450 | && rel->r_offset == rel[1].r_offset | |
cec5225b YZ |
5451 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE |
5452 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL) | |
a06ea964 NC |
5453 | save_addend = TRUE; |
5454 | else | |
5455 | save_addend = FALSE; | |
5456 | ||
5457 | if (r == bfd_reloc_continue) | |
cec5225b | 5458 | r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd, |
a06ea964 NC |
5459 | input_section, contents, rel, |
5460 | relocation, info, sec, | |
5461 | h, &unresolved_reloc, | |
1419bbe5 | 5462 | save_addend, &addend, sym); |
a06ea964 | 5463 | |
a6bb11b2 | 5464 | switch (elfNN_aarch64_bfd_reloc_from_type (r_type)) |
a06ea964 | 5465 | { |
ce336788 | 5466 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 5467 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 5468 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a06ea964 NC |
5469 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
5470 | { | |
5471 | bfd_boolean need_relocs = FALSE; | |
5472 | bfd_byte *loc; | |
5473 | int indx; | |
5474 | bfd_vma off; | |
5475 | ||
5476 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
5477 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
5478 | ||
5479 | need_relocs = | |
5480 | (info->shared || indx != 0) && | |
5481 | (h == NULL | |
5482 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5483 | || h->root.type != bfd_link_hash_undefweak); | |
5484 | ||
5485 | BFD_ASSERT (globals->root.srelgot != NULL); | |
5486 | ||
5487 | if (need_relocs) | |
5488 | { | |
5489 | Elf_Internal_Rela rela; | |
a6bb11b2 | 5490 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD)); |
a06ea964 NC |
5491 | rela.r_addend = 0; |
5492 | rela.r_offset = globals->root.sgot->output_section->vma + | |
5493 | globals->root.sgot->output_offset + off; | |
5494 | ||
5495 | ||
5496 | loc = globals->root.srelgot->contents; | |
5497 | loc += globals->root.srelgot->reloc_count++ | |
5498 | * RELOC_SIZE (htab); | |
cec5225b | 5499 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
5500 | |
5501 | if (indx == 0) | |
5502 | { | |
cec5225b | 5503 | bfd_put_NN (output_bfd, |
a06ea964 NC |
5504 | relocation - dtpoff_base (info), |
5505 | globals->root.sgot->contents + off | |
5506 | + GOT_ENTRY_SIZE); | |
5507 | } | |
5508 | else | |
5509 | { | |
5510 | /* This TLS symbol is global. We emit a | |
5511 | relocation to fixup the tls offset at load | |
5512 | time. */ | |
5513 | rela.r_info = | |
a6bb11b2 | 5514 | ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL)); |
a06ea964 NC |
5515 | rela.r_addend = 0; |
5516 | rela.r_offset = | |
5517 | (globals->root.sgot->output_section->vma | |
5518 | + globals->root.sgot->output_offset + off | |
5519 | + GOT_ENTRY_SIZE); | |
5520 | ||
5521 | loc = globals->root.srelgot->contents; | |
5522 | loc += globals->root.srelgot->reloc_count++ | |
5523 | * RELOC_SIZE (globals); | |
cec5225b YZ |
5524 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
5525 | bfd_put_NN (output_bfd, (bfd_vma) 0, | |
a06ea964 NC |
5526 | globals->root.sgot->contents + off |
5527 | + GOT_ENTRY_SIZE); | |
5528 | } | |
5529 | } | |
5530 | else | |
5531 | { | |
cec5225b | 5532 | bfd_put_NN (output_bfd, (bfd_vma) 1, |
a06ea964 | 5533 | globals->root.sgot->contents + off); |
cec5225b | 5534 | bfd_put_NN (output_bfd, |
a06ea964 NC |
5535 | relocation - dtpoff_base (info), |
5536 | globals->root.sgot->contents + off | |
5537 | + GOT_ENTRY_SIZE); | |
5538 | } | |
5539 | ||
5540 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
5541 | } | |
5542 | break; | |
5543 | ||
a6bb11b2 YZ |
5544 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
5545 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
043bf05a | 5546 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
a06ea964 NC |
5547 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
5548 | { | |
5549 | bfd_boolean need_relocs = FALSE; | |
5550 | bfd_byte *loc; | |
5551 | int indx; | |
5552 | bfd_vma off; | |
5553 | ||
5554 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
5555 | ||
5556 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
5557 | ||
5558 | need_relocs = | |
5559 | (info->shared || indx != 0) && | |
5560 | (h == NULL | |
5561 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5562 | || h->root.type != bfd_link_hash_undefweak); | |
5563 | ||
5564 | BFD_ASSERT (globals->root.srelgot != NULL); | |
5565 | ||
5566 | if (need_relocs) | |
5567 | { | |
5568 | Elf_Internal_Rela rela; | |
5569 | ||
5570 | if (indx == 0) | |
5571 | rela.r_addend = relocation - dtpoff_base (info); | |
5572 | else | |
5573 | rela.r_addend = 0; | |
5574 | ||
a6bb11b2 | 5575 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL)); |
a06ea964 NC |
5576 | rela.r_offset = globals->root.sgot->output_section->vma + |
5577 | globals->root.sgot->output_offset + off; | |
5578 | ||
5579 | loc = globals->root.srelgot->contents; | |
5580 | loc += globals->root.srelgot->reloc_count++ | |
5581 | * RELOC_SIZE (htab); | |
5582 | ||
cec5225b | 5583 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 5584 | |
cec5225b | 5585 | bfd_put_NN (output_bfd, rela.r_addend, |
a06ea964 NC |
5586 | globals->root.sgot->contents + off); |
5587 | } | |
5588 | else | |
cec5225b | 5589 | bfd_put_NN (output_bfd, relocation - tpoff_base (info), |
a06ea964 NC |
5590 | globals->root.sgot->contents + off); |
5591 | ||
5592 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
5593 | } | |
5594 | break; | |
5595 | ||
a6bb11b2 | 5596 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
ce336788 | 5597 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: |
a6bb11b2 | 5598 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: |
a6bb11b2 YZ |
5599 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: |
5600 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
ce336788 JW |
5601 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: |
5602 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
5603 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
a06ea964 NC |
5604 | break; |
5605 | ||
7bcccb57 | 5606 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
a6bb11b2 | 5607 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 5608 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 5609 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
1ada945d | 5610 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
5611 | if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx)) |
5612 | { | |
5613 | bfd_boolean need_relocs = FALSE; | |
5614 | int indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
5615 | bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx); | |
5616 | ||
5617 | need_relocs = (h == NULL | |
5618 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5619 | || h->root.type != bfd_link_hash_undefweak); | |
5620 | ||
5621 | BFD_ASSERT (globals->root.srelgot != NULL); | |
5622 | BFD_ASSERT (globals->root.sgot != NULL); | |
5623 | ||
5624 | if (need_relocs) | |
5625 | { | |
5626 | bfd_byte *loc; | |
5627 | Elf_Internal_Rela rela; | |
a6bb11b2 YZ |
5628 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC)); |
5629 | ||
a06ea964 NC |
5630 | rela.r_addend = 0; |
5631 | rela.r_offset = (globals->root.sgotplt->output_section->vma | |
5632 | + globals->root.sgotplt->output_offset | |
5633 | + off + globals->sgotplt_jump_table_size); | |
5634 | ||
5635 | if (indx == 0) | |
5636 | rela.r_addend = relocation - dtpoff_base (info); | |
5637 | ||
5638 | /* Allocate the next available slot in the PLT reloc | |
5639 | section to hold our R_AARCH64_TLSDESC, the next | |
5640 | available slot is determined from reloc_count, | |
5641 | which we step. But note, reloc_count was | |
5642 | artifically moved down while allocating slots for | |
5643 | real PLT relocs such that all of the PLT relocs | |
5644 | will fit above the initial reloc_count and the | |
5645 | extra stuff will fit below. */ | |
5646 | loc = globals->root.srelplt->contents; | |
5647 | loc += globals->root.srelplt->reloc_count++ | |
5648 | * RELOC_SIZE (globals); | |
5649 | ||
cec5225b | 5650 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 5651 | |
cec5225b | 5652 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
5653 | globals->root.sgotplt->contents + off + |
5654 | globals->sgotplt_jump_table_size); | |
cec5225b | 5655 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
5656 | globals->root.sgotplt->contents + off + |
5657 | globals->sgotplt_jump_table_size + | |
5658 | GOT_ENTRY_SIZE); | |
5659 | } | |
5660 | ||
5661 | symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx); | |
5662 | } | |
5663 | break; | |
a6bb11b2 YZ |
5664 | default: |
5665 | break; | |
a06ea964 NC |
5666 | } |
5667 | ||
5668 | if (!save_addend) | |
5669 | addend = 0; | |
5670 | ||
5671 | ||
5672 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections | |
5673 | because such sections are not SEC_ALLOC and thus ld.so will | |
5674 | not process them. */ | |
5675 | if (unresolved_reloc | |
5676 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
5677 | && h->def_dynamic) | |
5678 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
5679 | +rel->r_offset) != (bfd_vma) - 1) | |
5680 | { | |
5681 | (*_bfd_error_handler) | |
5682 | (_ | |
5683 | ("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), | |
5684 | input_bfd, input_section, (long) rel->r_offset, howto->name, | |
5685 | h->root.root.string); | |
5686 | return FALSE; | |
5687 | } | |
5688 | ||
5689 | if (r != bfd_reloc_ok && r != bfd_reloc_continue) | |
5690 | { | |
5691 | switch (r) | |
5692 | { | |
5693 | case bfd_reloc_overflow: | |
fdc3b1b1 JW |
5694 | if (!(*info->callbacks->reloc_overflow) |
5695 | (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, | |
5696 | input_bfd, input_section, rel->r_offset)) | |
a06ea964 NC |
5697 | return FALSE; |
5698 | break; | |
5699 | ||
5700 | case bfd_reloc_undefined: | |
5701 | if (!((*info->callbacks->undefined_symbol) | |
5702 | (info, name, input_bfd, input_section, | |
5703 | rel->r_offset, TRUE))) | |
5704 | return FALSE; | |
5705 | break; | |
5706 | ||
5707 | case bfd_reloc_outofrange: | |
5708 | error_message = _("out of range"); | |
5709 | goto common_error; | |
5710 | ||
5711 | case bfd_reloc_notsupported: | |
5712 | error_message = _("unsupported relocation"); | |
5713 | goto common_error; | |
5714 | ||
5715 | case bfd_reloc_dangerous: | |
5716 | /* error_message should already be set. */ | |
5717 | goto common_error; | |
5718 | ||
5719 | default: | |
5720 | error_message = _("unknown error"); | |
5721 | /* Fall through. */ | |
5722 | ||
5723 | common_error: | |
5724 | BFD_ASSERT (error_message != NULL); | |
5725 | if (!((*info->callbacks->reloc_dangerous) | |
5726 | (info, error_message, input_bfd, input_section, | |
5727 | rel->r_offset))) | |
5728 | return FALSE; | |
5729 | break; | |
5730 | } | |
5731 | } | |
5732 | } | |
5733 | ||
5734 | return TRUE; | |
5735 | } | |
5736 | ||
5737 | /* Set the right machine number. */ | |
5738 | ||
5739 | static bfd_boolean | |
cec5225b | 5740 | elfNN_aarch64_object_p (bfd *abfd) |
a06ea964 | 5741 | { |
cec5225b YZ |
5742 | #if ARCH_SIZE == 32 |
5743 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32); | |
5744 | #else | |
a06ea964 | 5745 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64); |
cec5225b | 5746 | #endif |
a06ea964 NC |
5747 | return TRUE; |
5748 | } | |
5749 | ||
5750 | /* Function to keep AArch64 specific flags in the ELF header. */ | |
5751 | ||
5752 | static bfd_boolean | |
cec5225b | 5753 | elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags) |
a06ea964 NC |
5754 | { |
5755 | if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags) | |
5756 | { | |
5757 | } | |
5758 | else | |
5759 | { | |
5760 | elf_elfheader (abfd)->e_flags = flags; | |
5761 | elf_flags_init (abfd) = TRUE; | |
5762 | } | |
5763 | ||
5764 | return TRUE; | |
5765 | } | |
5766 | ||
a06ea964 NC |
5767 | /* Merge backend specific data from an object file to the output |
5768 | object file when linking. */ | |
5769 | ||
5770 | static bfd_boolean | |
cec5225b | 5771 | elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
a06ea964 NC |
5772 | { |
5773 | flagword out_flags; | |
5774 | flagword in_flags; | |
5775 | bfd_boolean flags_compatible = TRUE; | |
5776 | asection *sec; | |
5777 | ||
5778 | /* Check if we have the same endianess. */ | |
5779 | if (!_bfd_generic_verify_endian_match (ibfd, obfd)) | |
5780 | return FALSE; | |
5781 | ||
5782 | if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd)) | |
5783 | return TRUE; | |
5784 | ||
5785 | /* The input BFD must have had its flags initialised. */ | |
5786 | /* The following seems bogus to me -- The flags are initialized in | |
5787 | the assembler but I don't think an elf_flags_init field is | |
5788 | written into the object. */ | |
5789 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ | |
5790 | ||
5791 | in_flags = elf_elfheader (ibfd)->e_flags; | |
5792 | out_flags = elf_elfheader (obfd)->e_flags; | |
5793 | ||
5794 | if (!elf_flags_init (obfd)) | |
5795 | { | |
5796 | /* If the input is the default architecture and had the default | |
5797 | flags then do not bother setting the flags for the output | |
5798 | architecture, instead allow future merges to do this. If no | |
5799 | future merges ever set these flags then they will retain their | |
5800 | uninitialised values, which surprise surprise, correspond | |
5801 | to the default values. */ | |
5802 | if (bfd_get_arch_info (ibfd)->the_default | |
5803 | && elf_elfheader (ibfd)->e_flags == 0) | |
5804 | return TRUE; | |
5805 | ||
5806 | elf_flags_init (obfd) = TRUE; | |
5807 | elf_elfheader (obfd)->e_flags = in_flags; | |
5808 | ||
5809 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
5810 | && bfd_get_arch_info (obfd)->the_default) | |
5811 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
5812 | bfd_get_mach (ibfd)); | |
5813 | ||
5814 | return TRUE; | |
5815 | } | |
5816 | ||
5817 | /* Identical flags must be compatible. */ | |
5818 | if (in_flags == out_flags) | |
5819 | return TRUE; | |
5820 | ||
5821 | /* Check to see if the input BFD actually contains any sections. If | |
5822 | not, its flags may not have been initialised either, but it | |
5823 | cannot actually cause any incompatiblity. Do not short-circuit | |
5824 | dynamic objects; their section list may be emptied by | |
5825 | elf_link_add_object_symbols. | |
5826 | ||
5827 | Also check to see if there are no code sections in the input. | |
5828 | In this case there is no need to check for code specific flags. | |
5829 | XXX - do we need to worry about floating-point format compatability | |
5830 | in data sections ? */ | |
5831 | if (!(ibfd->flags & DYNAMIC)) | |
5832 | { | |
5833 | bfd_boolean null_input_bfd = TRUE; | |
5834 | bfd_boolean only_data_sections = TRUE; | |
5835 | ||
5836 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
5837 | { | |
5838 | if ((bfd_get_section_flags (ibfd, sec) | |
5839 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
5840 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
5841 | only_data_sections = FALSE; | |
5842 | ||
5843 | null_input_bfd = FALSE; | |
5844 | break; | |
5845 | } | |
5846 | ||
5847 | if (null_input_bfd || only_data_sections) | |
5848 | return TRUE; | |
5849 | } | |
5850 | ||
5851 | return flags_compatible; | |
5852 | } | |
5853 | ||
5854 | /* Display the flags field. */ | |
5855 | ||
5856 | static bfd_boolean | |
cec5225b | 5857 | elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr) |
a06ea964 NC |
5858 | { |
5859 | FILE *file = (FILE *) ptr; | |
5860 | unsigned long flags; | |
5861 | ||
5862 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
5863 | ||
5864 | /* Print normal ELF private data. */ | |
5865 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
5866 | ||
5867 | flags = elf_elfheader (abfd)->e_flags; | |
5868 | /* Ignore init flag - it may not be set, despite the flags field | |
5869 | containing valid data. */ | |
5870 | ||
5871 | /* xgettext:c-format */ | |
5872 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
5873 | ||
5874 | if (flags) | |
5875 | fprintf (file, _("<Unrecognised flag bits set>")); | |
5876 | ||
5877 | fputc ('\n', file); | |
5878 | ||
5879 | return TRUE; | |
5880 | } | |
5881 | ||
5882 | /* Update the got entry reference counts for the section being removed. */ | |
5883 | ||
5884 | static bfd_boolean | |
cec5225b | 5885 | elfNN_aarch64_gc_sweep_hook (bfd *abfd, |
cb8af559 NC |
5886 | struct bfd_link_info *info, |
5887 | asection *sec, | |
5888 | const Elf_Internal_Rela * relocs) | |
a06ea964 | 5889 | { |
cec5225b | 5890 | struct elf_aarch64_link_hash_table *htab; |
59c108f7 NC |
5891 | Elf_Internal_Shdr *symtab_hdr; |
5892 | struct elf_link_hash_entry **sym_hashes; | |
cb8af559 | 5893 | struct elf_aarch64_local_symbol *locals; |
59c108f7 NC |
5894 | const Elf_Internal_Rela *rel, *relend; |
5895 | ||
5896 | if (info->relocatable) | |
5897 | return TRUE; | |
5898 | ||
cec5225b | 5899 | htab = elf_aarch64_hash_table (info); |
59c108f7 NC |
5900 | |
5901 | if (htab == NULL) | |
5902 | return FALSE; | |
5903 | ||
5904 | elf_section_data (sec)->local_dynrel = NULL; | |
5905 | ||
5906 | symtab_hdr = &elf_symtab_hdr (abfd); | |
5907 | sym_hashes = elf_sym_hashes (abfd); | |
5908 | ||
cec5225b | 5909 | locals = elf_aarch64_locals (abfd); |
59c108f7 NC |
5910 | |
5911 | relend = relocs + sec->reloc_count; | |
5912 | for (rel = relocs; rel < relend; rel++) | |
5913 | { | |
5914 | unsigned long r_symndx; | |
5915 | unsigned int r_type; | |
5916 | struct elf_link_hash_entry *h = NULL; | |
5917 | ||
cec5225b | 5918 | r_symndx = ELFNN_R_SYM (rel->r_info); |
8847944f | 5919 | |
59c108f7 NC |
5920 | if (r_symndx >= symtab_hdr->sh_info) |
5921 | { | |
8847944f | 5922 | |
59c108f7 NC |
5923 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
5924 | while (h->root.type == bfd_link_hash_indirect | |
5925 | || h->root.type == bfd_link_hash_warning) | |
5926 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
59c108f7 NC |
5927 | } |
5928 | else | |
5929 | { | |
5930 | Elf_Internal_Sym *isym; | |
5931 | ||
8847944f | 5932 | /* A local symbol. */ |
59c108f7 NC |
5933 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5934 | abfd, r_symndx); | |
1419bbe5 WN |
5935 | |
5936 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
5937 | if (isym != NULL | |
5938 | && ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
5939 | { | |
5940 | h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, FALSE); | |
5941 | if (h == NULL) | |
5942 | abort (); | |
5943 | } | |
5944 | } | |
5945 | ||
5946 | if (h) | |
5947 | { | |
5948 | struct elf_aarch64_link_hash_entry *eh; | |
5949 | struct elf_dyn_relocs **pp; | |
5950 | struct elf_dyn_relocs *p; | |
5951 | ||
5952 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
5953 | ||
5954 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
5955 | if (p->sec == sec) | |
5956 | { | |
5957 | /* Everything must go for SEC. */ | |
5958 | *pp = p->next; | |
5959 | break; | |
5960 | } | |
59c108f7 NC |
5961 | } |
5962 | ||
cec5225b | 5963 | r_type = ELFNN_R_TYPE (rel->r_info); |
a6bb11b2 | 5964 | switch (aarch64_tls_transition (abfd,info, r_type, h ,r_symndx)) |
59c108f7 | 5965 | { |
a6bb11b2 | 5966 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
7bcccb57 | 5967 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
7018c030 | 5968 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
7bcccb57 | 5969 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 5970 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
7bcccb57 MS |
5971 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
5972 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: | |
5973 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
389b8029 | 5974 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
7bcccb57 MS |
5975 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
5976 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: | |
1ada945d | 5977 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a6bb11b2 | 5978 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
7bcccb57 | 5979 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 5980 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 5981 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 5982 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
7bcccb57 | 5983 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 5984 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
a6bb11b2 | 5985 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
7bcccb57 | 5986 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: |
a6bb11b2 | 5987 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: |
a6bb11b2 YZ |
5988 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: |
5989 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
7bcccb57 MS |
5990 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: |
5991 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
5992 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
a6bb11b2 | 5993 | if (h != NULL) |
59c108f7 NC |
5994 | { |
5995 | if (h->got.refcount > 0) | |
5996 | h->got.refcount -= 1; | |
1419bbe5 WN |
5997 | |
5998 | if (h->type == STT_GNU_IFUNC) | |
5999 | { | |
6000 | if (h->plt.refcount > 0) | |
6001 | h->plt.refcount -= 1; | |
6002 | } | |
59c108f7 | 6003 | } |
cb8af559 | 6004 | else if (locals != NULL) |
59c108f7 | 6005 | { |
cb8af559 NC |
6006 | if (locals[r_symndx].got_refcount > 0) |
6007 | locals[r_symndx].got_refcount -= 1; | |
59c108f7 NC |
6008 | } |
6009 | break; | |
6010 | ||
a6bb11b2 YZ |
6011 | case BFD_RELOC_AARCH64_CALL26: |
6012 | case BFD_RELOC_AARCH64_JUMP26: | |
6013 | /* If this is a local symbol then we resolve it | |
6014 | directly without creating a PLT entry. */ | |
59c108f7 NC |
6015 | if (h == NULL) |
6016 | continue; | |
6017 | ||
6018 | if (h->plt.refcount > 0) | |
6019 | h->plt.refcount -= 1; | |
6020 | break; | |
6021 | ||
ce336788 JW |
6022 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
6023 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
6024 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
614b09ce JW |
6025 | case BFD_RELOC_AARCH64_MOVW_G0_NC: |
6026 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
6027 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
6028 | case BFD_RELOC_AARCH64_MOVW_G3: | |
a6bb11b2 | 6029 | case BFD_RELOC_AARCH64_NN: |
8847944f | 6030 | if (h != NULL && info->executable) |
59c108f7 NC |
6031 | { |
6032 | if (h->plt.refcount > 0) | |
6033 | h->plt.refcount -= 1; | |
6034 | } | |
6035 | break; | |
cec5225b | 6036 | |
59c108f7 NC |
6037 | default: |
6038 | break; | |
6039 | } | |
6040 | } | |
6041 | ||
a06ea964 NC |
6042 | return TRUE; |
6043 | } | |
6044 | ||
6045 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
6046 | regular object. The current definition is in some section of the | |
6047 | dynamic object, but we're not including those sections. We have to | |
6048 | change the definition to something the rest of the link can | |
6049 | understand. */ | |
6050 | ||
6051 | static bfd_boolean | |
cec5225b | 6052 | elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info, |
a06ea964 NC |
6053 | struct elf_link_hash_entry *h) |
6054 | { | |
cec5225b | 6055 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
6056 | asection *s; |
6057 | ||
6058 | /* If this is a function, put it in the procedure linkage table. We | |
6059 | will fill in the contents of the procedure linkage table later, | |
6060 | when we know the address of the .got section. */ | |
1419bbe5 | 6061 | if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt) |
a06ea964 NC |
6062 | { |
6063 | if (h->plt.refcount <= 0 | |
1419bbe5 WN |
6064 | || (h->type != STT_GNU_IFUNC |
6065 | && (SYMBOL_CALLS_LOCAL (info, h) | |
6066 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
6067 | && h->root.type == bfd_link_hash_undefweak)))) | |
a06ea964 NC |
6068 | { |
6069 | /* This case can occur if we saw a CALL26 reloc in | |
6070 | an input file, but the symbol wasn't referred to | |
6071 | by a dynamic object or all references were | |
6072 | garbage collected. In which case we can end up | |
6073 | resolving. */ | |
6074 | h->plt.offset = (bfd_vma) - 1; | |
6075 | h->needs_plt = 0; | |
6076 | } | |
6077 | ||
6078 | return TRUE; | |
6079 | } | |
6080 | else | |
80de0c6d | 6081 | /* Otherwise, reset to -1. */ |
a06ea964 NC |
6082 | h->plt.offset = (bfd_vma) - 1; |
6083 | ||
6084 | ||
6085 | /* If this is a weak symbol, and there is a real definition, the | |
6086 | processor independent code will have arranged for us to see the | |
6087 | real definition first, and we can just use the same value. */ | |
6088 | if (h->u.weakdef != NULL) | |
6089 | { | |
6090 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
6091 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
6092 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
6093 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
6094 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) | |
6095 | h->non_got_ref = h->u.weakdef->non_got_ref; | |
6096 | return TRUE; | |
6097 | } | |
6098 | ||
6099 | /* If we are creating a shared library, we must presume that the | |
6100 | only references to the symbol are via the global offset table. | |
6101 | For such cases we need not do anything here; the relocations will | |
6102 | be handled correctly by relocate_section. */ | |
6103 | if (info->shared) | |
6104 | return TRUE; | |
6105 | ||
6106 | /* If there are no references to this symbol that do not use the | |
6107 | GOT, we don't need to generate a copy reloc. */ | |
6108 | if (!h->non_got_ref) | |
6109 | return TRUE; | |
6110 | ||
6111 | /* If -z nocopyreloc was given, we won't generate them either. */ | |
6112 | if (info->nocopyreloc) | |
6113 | { | |
6114 | h->non_got_ref = 0; | |
6115 | return TRUE; | |
6116 | } | |
6117 | ||
6118 | /* We must allocate the symbol in our .dynbss section, which will | |
6119 | become part of the .bss section of the executable. There will be | |
6120 | an entry for this symbol in the .dynsym section. The dynamic | |
6121 | object will contain position independent code, so all references | |
6122 | from the dynamic object to this symbol will go through the global | |
6123 | offset table. The dynamic linker will use the .dynsym entry to | |
6124 | determine the address it must put in the global offset table, so | |
6125 | both the dynamic object and the regular object will refer to the | |
6126 | same memory location for the variable. */ | |
6127 | ||
cec5225b | 6128 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
6129 | |
6130 | /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker | |
6131 | to copy the initial value out of the dynamic object and into the | |
6132 | runtime process image. */ | |
6133 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) | |
6134 | { | |
6135 | htab->srelbss->size += RELOC_SIZE (htab); | |
6136 | h->needs_copy = 1; | |
6137 | } | |
6138 | ||
6139 | s = htab->sdynbss; | |
6140 | ||
6cabe1ea | 6141 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
a06ea964 NC |
6142 | |
6143 | } | |
6144 | ||
6145 | static bfd_boolean | |
cec5225b | 6146 | elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number) |
a06ea964 NC |
6147 | { |
6148 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 6149 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
6150 | if (locals == NULL) |
6151 | { | |
6152 | locals = (struct elf_aarch64_local_symbol *) | |
6153 | bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol)); | |
6154 | if (locals == NULL) | |
6155 | return FALSE; | |
cec5225b | 6156 | elf_aarch64_locals (abfd) = locals; |
a06ea964 NC |
6157 | } |
6158 | return TRUE; | |
6159 | } | |
6160 | ||
cc0efaa8 MS |
6161 | /* Create the .got section to hold the global offset table. */ |
6162 | ||
6163 | static bfd_boolean | |
6164 | aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) | |
6165 | { | |
6166 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
6167 | flagword flags; | |
6168 | asection *s; | |
6169 | struct elf_link_hash_entry *h; | |
6170 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
6171 | ||
6172 | /* This function may be called more than once. */ | |
6173 | s = bfd_get_linker_section (abfd, ".got"); | |
6174 | if (s != NULL) | |
6175 | return TRUE; | |
6176 | ||
6177 | flags = bed->dynamic_sec_flags; | |
6178 | ||
6179 | s = bfd_make_section_anyway_with_flags (abfd, | |
6180 | (bed->rela_plts_and_copies_p | |
6181 | ? ".rela.got" : ".rel.got"), | |
6182 | (bed->dynamic_sec_flags | |
6183 | | SEC_READONLY)); | |
6184 | if (s == NULL | |
6185 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
6186 | return FALSE; | |
6187 | htab->srelgot = s; | |
6188 | ||
6189 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); | |
6190 | if (s == NULL | |
6191 | || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
6192 | return FALSE; | |
6193 | htab->sgot = s; | |
6194 | htab->sgot->size += GOT_ENTRY_SIZE; | |
6195 | ||
6196 | if (bed->want_got_sym) | |
6197 | { | |
6198 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
6199 | (or .got.plt) section. We don't do this in the linker script | |
6200 | because we don't want to define the symbol if we are not creating | |
6201 | a global offset table. */ | |
6202 | h = _bfd_elf_define_linkage_sym (abfd, info, s, | |
6203 | "_GLOBAL_OFFSET_TABLE_"); | |
6204 | elf_hash_table (info)->hgot = h; | |
6205 | if (h == NULL) | |
6206 | return FALSE; | |
6207 | } | |
6208 | ||
6209 | if (bed->want_got_plt) | |
6210 | { | |
6211 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); | |
6212 | if (s == NULL | |
6213 | || !bfd_set_section_alignment (abfd, s, | |
6214 | bed->s->log_file_align)) | |
6215 | return FALSE; | |
6216 | htab->sgotplt = s; | |
6217 | } | |
6218 | ||
6219 | /* The first bit of the global offset table is the header. */ | |
6220 | s->size += bed->got_header_size; | |
6221 | ||
6222 | return TRUE; | |
6223 | } | |
6224 | ||
a06ea964 NC |
6225 | /* Look through the relocs for a section during the first phase. */ |
6226 | ||
6227 | static bfd_boolean | |
cec5225b | 6228 | elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
a06ea964 NC |
6229 | asection *sec, const Elf_Internal_Rela *relocs) |
6230 | { | |
6231 | Elf_Internal_Shdr *symtab_hdr; | |
6232 | struct elf_link_hash_entry **sym_hashes; | |
6233 | const Elf_Internal_Rela *rel; | |
6234 | const Elf_Internal_Rela *rel_end; | |
6235 | asection *sreloc; | |
6236 | ||
cec5225b | 6237 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 6238 | |
a06ea964 NC |
6239 | if (info->relocatable) |
6240 | return TRUE; | |
6241 | ||
6242 | BFD_ASSERT (is_aarch64_elf (abfd)); | |
6243 | ||
cec5225b | 6244 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
6245 | sreloc = NULL; |
6246 | ||
6247 | symtab_hdr = &elf_symtab_hdr (abfd); | |
6248 | sym_hashes = elf_sym_hashes (abfd); | |
a06ea964 NC |
6249 | |
6250 | rel_end = relocs + sec->reloc_count; | |
6251 | for (rel = relocs; rel < rel_end; rel++) | |
6252 | { | |
6253 | struct elf_link_hash_entry *h; | |
6254 | unsigned long r_symndx; | |
6255 | unsigned int r_type; | |
a6bb11b2 | 6256 | bfd_reloc_code_real_type bfd_r_type; |
1419bbe5 | 6257 | Elf_Internal_Sym *isym; |
a06ea964 | 6258 | |
cec5225b YZ |
6259 | r_symndx = ELFNN_R_SYM (rel->r_info); |
6260 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 NC |
6261 | |
6262 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
6263 | { | |
6264 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd, | |
6265 | r_symndx); | |
6266 | return FALSE; | |
6267 | } | |
6268 | ||
ed5acf27 | 6269 | if (r_symndx < symtab_hdr->sh_info) |
1419bbe5 WN |
6270 | { |
6271 | /* A local symbol. */ | |
6272 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
6273 | abfd, r_symndx); | |
6274 | if (isym == NULL) | |
6275 | return FALSE; | |
6276 | ||
6277 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
6278 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
6279 | { | |
6280 | h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, | |
6281 | TRUE); | |
6282 | if (h == NULL) | |
6283 | return FALSE; | |
6284 | ||
6285 | /* Fake a STT_GNU_IFUNC symbol. */ | |
6286 | h->type = STT_GNU_IFUNC; | |
6287 | h->def_regular = 1; | |
6288 | h->ref_regular = 1; | |
6289 | h->forced_local = 1; | |
6290 | h->root.type = bfd_link_hash_defined; | |
6291 | } | |
6292 | else | |
6293 | h = NULL; | |
6294 | } | |
a06ea964 NC |
6295 | else |
6296 | { | |
6297 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
6298 | while (h->root.type == bfd_link_hash_indirect | |
6299 | || h->root.type == bfd_link_hash_warning) | |
6300 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 AM |
6301 | |
6302 | /* PR15323, ref flags aren't set for references in the same | |
6303 | object. */ | |
6304 | h->root.non_ir_ref = 1; | |
a06ea964 NC |
6305 | } |
6306 | ||
6307 | /* Could be done earlier, if h were already available. */ | |
a6bb11b2 | 6308 | bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx); |
a06ea964 | 6309 | |
1419bbe5 WN |
6310 | if (h != NULL) |
6311 | { | |
6312 | /* Create the ifunc sections for static executables. If we | |
6313 | never see an indirect function symbol nor we are building | |
6314 | a static executable, those sections will be empty and | |
6315 | won't appear in output. */ | |
6316 | switch (bfd_r_type) | |
6317 | { | |
6318 | default: | |
6319 | break; | |
6320 | ||
ce336788 JW |
6321 | case BFD_RELOC_AARCH64_ADD_LO12: |
6322 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: | |
6323 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
1419bbe5 | 6324 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 6325 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
1419bbe5 | 6326 | case BFD_RELOC_AARCH64_JUMP26: |
7018c030 | 6327 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
1419bbe5 | 6328 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 6329 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
1419bbe5 | 6330 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
ce336788 | 6331 | case BFD_RELOC_AARCH64_NN: |
1419bbe5 WN |
6332 | if (htab->root.dynobj == NULL) |
6333 | htab->root.dynobj = abfd; | |
6334 | if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info)) | |
6335 | return FALSE; | |
6336 | break; | |
6337 | } | |
6338 | ||
6339 | /* It is referenced by a non-shared object. */ | |
6340 | h->ref_regular = 1; | |
6341 | h->root.non_ir_ref = 1; | |
6342 | } | |
6343 | ||
a6bb11b2 | 6344 | switch (bfd_r_type) |
a06ea964 | 6345 | { |
a6bb11b2 | 6346 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
6347 | |
6348 | /* We don't need to handle relocs into sections not going into | |
6349 | the "real" output. */ | |
6350 | if ((sec->flags & SEC_ALLOC) == 0) | |
6351 | break; | |
6352 | ||
6353 | if (h != NULL) | |
6354 | { | |
6355 | if (!info->shared) | |
6356 | h->non_got_ref = 1; | |
6357 | ||
6358 | h->plt.refcount += 1; | |
6359 | h->pointer_equality_needed = 1; | |
6360 | } | |
6361 | ||
6362 | /* No need to do anything if we're not creating a shared | |
6363 | object. */ | |
6364 | if (! info->shared) | |
6365 | break; | |
6366 | ||
6367 | { | |
6368 | struct elf_dyn_relocs *p; | |
6369 | struct elf_dyn_relocs **head; | |
6370 | ||
6371 | /* We must copy these reloc types into the output file. | |
6372 | Create a reloc section in dynobj and make room for | |
6373 | this reloc. */ | |
6374 | if (sreloc == NULL) | |
6375 | { | |
6376 | if (htab->root.dynobj == NULL) | |
6377 | htab->root.dynobj = abfd; | |
6378 | ||
6379 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
0608afa7 | 6380 | (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE); |
a06ea964 NC |
6381 | |
6382 | if (sreloc == NULL) | |
6383 | return FALSE; | |
6384 | } | |
6385 | ||
6386 | /* If this is a global symbol, we count the number of | |
6387 | relocations we need for this symbol. */ | |
6388 | if (h != NULL) | |
6389 | { | |
cec5225b YZ |
6390 | struct elf_aarch64_link_hash_entry *eh; |
6391 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
6392 | head = &eh->dyn_relocs; |
6393 | } | |
6394 | else | |
6395 | { | |
6396 | /* Track dynamic relocs needed for local syms too. | |
6397 | We really need local syms available to do this | |
6398 | easily. Oh well. */ | |
6399 | ||
6400 | asection *s; | |
6401 | void **vpp; | |
a06ea964 NC |
6402 | |
6403 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
6404 | abfd, r_symndx); | |
6405 | if (isym == NULL) | |
6406 | return FALSE; | |
6407 | ||
6408 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
6409 | if (s == NULL) | |
6410 | s = sec; | |
6411 | ||
6412 | /* Beware of type punned pointers vs strict aliasing | |
6413 | rules. */ | |
6414 | vpp = &(elf_section_data (s)->local_dynrel); | |
6415 | head = (struct elf_dyn_relocs **) vpp; | |
6416 | } | |
6417 | ||
6418 | p = *head; | |
6419 | if (p == NULL || p->sec != sec) | |
6420 | { | |
6421 | bfd_size_type amt = sizeof *p; | |
6422 | p = ((struct elf_dyn_relocs *) | |
6423 | bfd_zalloc (htab->root.dynobj, amt)); | |
6424 | if (p == NULL) | |
6425 | return FALSE; | |
6426 | p->next = *head; | |
6427 | *head = p; | |
6428 | p->sec = sec; | |
6429 | } | |
6430 | ||
6431 | p->count += 1; | |
6432 | ||
6433 | } | |
6434 | break; | |
6435 | ||
6436 | /* RR: We probably want to keep a consistency check that | |
6437 | there are no dangling GOT_PAGE relocs. */ | |
a6bb11b2 | 6438 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
7bcccb57 | 6439 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
7018c030 | 6440 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
7bcccb57 | 6441 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 6442 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
7bcccb57 MS |
6443 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
6444 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: | |
6445 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
389b8029 | 6446 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
7bcccb57 MS |
6447 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
6448 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: | |
1ada945d | 6449 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a6bb11b2 | 6450 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
7bcccb57 | 6451 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 6452 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 6453 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 6454 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
7bcccb57 | 6455 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 6456 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
a6bb11b2 | 6457 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
7bcccb57 | 6458 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: |
a6bb11b2 | 6459 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: |
a6bb11b2 YZ |
6460 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: |
6461 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
7bcccb57 MS |
6462 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: |
6463 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
6464 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
a06ea964 NC |
6465 | { |
6466 | unsigned got_type; | |
6467 | unsigned old_got_type; | |
6468 | ||
a6bb11b2 | 6469 | got_type = aarch64_reloc_got_type (bfd_r_type); |
a06ea964 NC |
6470 | |
6471 | if (h) | |
6472 | { | |
6473 | h->got.refcount += 1; | |
cec5225b | 6474 | old_got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
6475 | } |
6476 | else | |
6477 | { | |
6478 | struct elf_aarch64_local_symbol *locals; | |
6479 | ||
cec5225b | 6480 | if (!elfNN_aarch64_allocate_local_symbols |
a06ea964 NC |
6481 | (abfd, symtab_hdr->sh_info)) |
6482 | return FALSE; | |
6483 | ||
cec5225b | 6484 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
6485 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
6486 | locals[r_symndx].got_refcount += 1; | |
6487 | old_got_type = locals[r_symndx].got_type; | |
6488 | } | |
6489 | ||
6490 | /* If a variable is accessed with both general dynamic TLS | |
6491 | methods, two slots may be created. */ | |
6492 | if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type)) | |
6493 | got_type |= old_got_type; | |
6494 | ||
6495 | /* We will already have issued an error message if there | |
6496 | is a TLS/non-TLS mismatch, based on the symbol type. | |
6497 | So just combine any TLS types needed. */ | |
6498 | if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL | |
6499 | && got_type != GOT_NORMAL) | |
6500 | got_type |= old_got_type; | |
6501 | ||
6502 | /* If the symbol is accessed by both IE and GD methods, we | |
6503 | are able to relax. Turn off the GD flag, without | |
6504 | messing up with any other kind of TLS types that may be | |
6505 | involved. */ | |
6506 | if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type)) | |
6507 | got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD); | |
6508 | ||
6509 | if (old_got_type != got_type) | |
6510 | { | |
6511 | if (h != NULL) | |
cec5225b | 6512 | elf_aarch64_hash_entry (h)->got_type = got_type; |
a06ea964 NC |
6513 | else |
6514 | { | |
6515 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 6516 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
6517 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
6518 | locals[r_symndx].got_type = got_type; | |
6519 | } | |
6520 | } | |
6521 | ||
cc0efaa8 MS |
6522 | if (htab->root.dynobj == NULL) |
6523 | htab->root.dynobj = abfd; | |
6524 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
6525 | return FALSE; | |
a06ea964 NC |
6526 | break; |
6527 | } | |
6528 | ||
614b09ce JW |
6529 | case BFD_RELOC_AARCH64_MOVW_G0_NC: |
6530 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
6531 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
6532 | case BFD_RELOC_AARCH64_MOVW_G3: | |
6533 | if (info->shared) | |
6534 | { | |
6535 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
6536 | (*_bfd_error_handler) | |
6537 | (_("%B: relocation %s against `%s' can not be used when making " | |
6538 | "a shared object; recompile with -fPIC"), | |
6539 | abfd, elfNN_aarch64_howto_table[howto_index].name, | |
6540 | (h) ? h->root.root.string : "a local symbol"); | |
6541 | bfd_set_error (bfd_error_bad_value); | |
6542 | return FALSE; | |
6543 | } | |
6544 | ||
a6bb11b2 YZ |
6545 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
6546 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
6547 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
a06ea964 NC |
6548 | if (h != NULL && info->executable) |
6549 | { | |
6550 | /* If this reloc is in a read-only section, we might | |
6551 | need a copy reloc. We can't check reliably at this | |
6552 | stage whether the section is read-only, as input | |
6553 | sections have not yet been mapped to output sections. | |
6554 | Tentatively set the flag for now, and correct in | |
6555 | adjust_dynamic_symbol. */ | |
6556 | h->non_got_ref = 1; | |
6557 | h->plt.refcount += 1; | |
6558 | h->pointer_equality_needed = 1; | |
6559 | } | |
6560 | /* FIXME:: RR need to handle these in shared libraries | |
6561 | and essentially bomb out as these being non-PIC | |
6562 | relocations in shared libraries. */ | |
6563 | break; | |
6564 | ||
a6bb11b2 YZ |
6565 | case BFD_RELOC_AARCH64_CALL26: |
6566 | case BFD_RELOC_AARCH64_JUMP26: | |
a06ea964 NC |
6567 | /* If this is a local symbol then we resolve it |
6568 | directly without creating a PLT entry. */ | |
6569 | if (h == NULL) | |
6570 | continue; | |
6571 | ||
6572 | h->needs_plt = 1; | |
1419bbe5 WN |
6573 | if (h->plt.refcount <= 0) |
6574 | h->plt.refcount = 1; | |
6575 | else | |
6576 | h->plt.refcount += 1; | |
a06ea964 | 6577 | break; |
a6bb11b2 YZ |
6578 | |
6579 | default: | |
6580 | break; | |
a06ea964 NC |
6581 | } |
6582 | } | |
a6bb11b2 | 6583 | |
a06ea964 NC |
6584 | return TRUE; |
6585 | } | |
6586 | ||
6587 | /* Treat mapping symbols as special target symbols. */ | |
6588 | ||
6589 | static bfd_boolean | |
cec5225b | 6590 | elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
6591 | asymbol *sym) |
6592 | { | |
6593 | return bfd_is_aarch64_special_symbol_name (sym->name, | |
6594 | BFD_AARCH64_SPECIAL_SYM_TYPE_ANY); | |
6595 | } | |
6596 | ||
6597 | /* This is a copy of elf_find_function () from elf.c except that | |
6598 | AArch64 mapping symbols are ignored when looking for function names. */ | |
6599 | ||
6600 | static bfd_boolean | |
6601 | aarch64_elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, | |
a06ea964 | 6602 | asymbol **symbols, |
fb167eb2 | 6603 | asection *section, |
a06ea964 NC |
6604 | bfd_vma offset, |
6605 | const char **filename_ptr, | |
6606 | const char **functionname_ptr) | |
6607 | { | |
6608 | const char *filename = NULL; | |
6609 | asymbol *func = NULL; | |
6610 | bfd_vma low_func = 0; | |
6611 | asymbol **p; | |
6612 | ||
6613 | for (p = symbols; *p != NULL; p++) | |
6614 | { | |
6615 | elf_symbol_type *q; | |
6616 | ||
6617 | q = (elf_symbol_type *) * p; | |
6618 | ||
6619 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) | |
6620 | { | |
6621 | default: | |
6622 | break; | |
6623 | case STT_FILE: | |
6624 | filename = bfd_asymbol_name (&q->symbol); | |
6625 | break; | |
6626 | case STT_FUNC: | |
6627 | case STT_NOTYPE: | |
6628 | /* Skip mapping symbols. */ | |
6629 | if ((q->symbol.flags & BSF_LOCAL) | |
6630 | && (bfd_is_aarch64_special_symbol_name | |
6631 | (q->symbol.name, BFD_AARCH64_SPECIAL_SYM_TYPE_ANY))) | |
6632 | continue; | |
6633 | /* Fall through. */ | |
6634 | if (bfd_get_section (&q->symbol) == section | |
6635 | && q->symbol.value >= low_func && q->symbol.value <= offset) | |
6636 | { | |
6637 | func = (asymbol *) q; | |
6638 | low_func = q->symbol.value; | |
6639 | } | |
6640 | break; | |
6641 | } | |
6642 | } | |
6643 | ||
6644 | if (func == NULL) | |
6645 | return FALSE; | |
6646 | ||
6647 | if (filename_ptr) | |
6648 | *filename_ptr = filename; | |
6649 | if (functionname_ptr) | |
6650 | *functionname_ptr = bfd_asymbol_name (func); | |
6651 | ||
6652 | return TRUE; | |
6653 | } | |
6654 | ||
6655 | ||
6656 | /* Find the nearest line to a particular section and offset, for error | |
6657 | reporting. This code is a duplicate of the code in elf.c, except | |
6658 | that it uses aarch64_elf_find_function. */ | |
6659 | ||
6660 | static bfd_boolean | |
cec5225b | 6661 | elfNN_aarch64_find_nearest_line (bfd *abfd, |
a06ea964 | 6662 | asymbol **symbols, |
fb167eb2 | 6663 | asection *section, |
a06ea964 NC |
6664 | bfd_vma offset, |
6665 | const char **filename_ptr, | |
6666 | const char **functionname_ptr, | |
fb167eb2 AM |
6667 | unsigned int *line_ptr, |
6668 | unsigned int *discriminator_ptr) | |
a06ea964 NC |
6669 | { |
6670 | bfd_boolean found = FALSE; | |
6671 | ||
fb167eb2 | 6672 | if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset, |
a06ea964 | 6673 | filename_ptr, functionname_ptr, |
fb167eb2 AM |
6674 | line_ptr, discriminator_ptr, |
6675 | dwarf_debug_sections, 0, | |
a06ea964 NC |
6676 | &elf_tdata (abfd)->dwarf2_find_line_info)) |
6677 | { | |
6678 | if (!*functionname_ptr) | |
fb167eb2 | 6679 | aarch64_elf_find_function (abfd, symbols, section, offset, |
a06ea964 NC |
6680 | *filename_ptr ? NULL : filename_ptr, |
6681 | functionname_ptr); | |
6682 | ||
6683 | return TRUE; | |
6684 | } | |
6685 | ||
fb167eb2 AM |
6686 | /* Skip _bfd_dwarf1_find_nearest_line since no known AArch64 |
6687 | toolchain uses DWARF1. */ | |
6688 | ||
a06ea964 NC |
6689 | if (!_bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, |
6690 | &found, filename_ptr, | |
6691 | functionname_ptr, line_ptr, | |
6692 | &elf_tdata (abfd)->line_info)) | |
6693 | return FALSE; | |
6694 | ||
6695 | if (found && (*functionname_ptr || *line_ptr)) | |
6696 | return TRUE; | |
6697 | ||
6698 | if (symbols == NULL) | |
6699 | return FALSE; | |
6700 | ||
fb167eb2 | 6701 | if (!aarch64_elf_find_function (abfd, symbols, section, offset, |
a06ea964 NC |
6702 | filename_ptr, functionname_ptr)) |
6703 | return FALSE; | |
6704 | ||
6705 | *line_ptr = 0; | |
6706 | return TRUE; | |
6707 | } | |
6708 | ||
6709 | static bfd_boolean | |
cec5225b | 6710 | elfNN_aarch64_find_inliner_info (bfd *abfd, |
a06ea964 NC |
6711 | const char **filename_ptr, |
6712 | const char **functionname_ptr, | |
6713 | unsigned int *line_ptr) | |
6714 | { | |
6715 | bfd_boolean found; | |
6716 | found = _bfd_dwarf2_find_inliner_info | |
6717 | (abfd, filename_ptr, | |
6718 | functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info); | |
6719 | return found; | |
6720 | } | |
6721 | ||
6722 | ||
6723 | static void | |
cec5225b | 6724 | elfNN_aarch64_post_process_headers (bfd *abfd, |
1419bbe5 | 6725 | struct bfd_link_info *link_info) |
a06ea964 NC |
6726 | { |
6727 | Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */ | |
6728 | ||
6729 | i_ehdrp = elf_elfheader (abfd); | |
a06ea964 | 6730 | i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION; |
1419bbe5 | 6731 | |
78245035 | 6732 | _bfd_elf_post_process_headers (abfd, link_info); |
a06ea964 NC |
6733 | } |
6734 | ||
6735 | static enum elf_reloc_type_class | |
cec5225b | 6736 | elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
7e612e98 AM |
6737 | const asection *rel_sec ATTRIBUTE_UNUSED, |
6738 | const Elf_Internal_Rela *rela) | |
a06ea964 | 6739 | { |
cec5225b | 6740 | switch ((int) ELFNN_R_TYPE (rela->r_info)) |
a06ea964 | 6741 | { |
a6bb11b2 | 6742 | case AARCH64_R (RELATIVE): |
a06ea964 | 6743 | return reloc_class_relative; |
a6bb11b2 | 6744 | case AARCH64_R (JUMP_SLOT): |
a06ea964 | 6745 | return reloc_class_plt; |
a6bb11b2 | 6746 | case AARCH64_R (COPY): |
a06ea964 NC |
6747 | return reloc_class_copy; |
6748 | default: | |
6749 | return reloc_class_normal; | |
6750 | } | |
6751 | } | |
6752 | ||
a06ea964 NC |
6753 | /* Handle an AArch64 specific section when reading an object file. This is |
6754 | called when bfd_section_from_shdr finds a section with an unknown | |
6755 | type. */ | |
6756 | ||
6757 | static bfd_boolean | |
cec5225b | 6758 | elfNN_aarch64_section_from_shdr (bfd *abfd, |
a06ea964 NC |
6759 | Elf_Internal_Shdr *hdr, |
6760 | const char *name, int shindex) | |
6761 | { | |
6762 | /* There ought to be a place to keep ELF backend specific flags, but | |
6763 | at the moment there isn't one. We just keep track of the | |
6764 | sections by their name, instead. Fortunately, the ABI gives | |
6765 | names for all the AArch64 specific sections, so we will probably get | |
6766 | away with this. */ | |
6767 | switch (hdr->sh_type) | |
6768 | { | |
6769 | case SHT_AARCH64_ATTRIBUTES: | |
6770 | break; | |
6771 | ||
6772 | default: | |
6773 | return FALSE; | |
6774 | } | |
6775 | ||
6776 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
6777 | return FALSE; | |
6778 | ||
6779 | return TRUE; | |
6780 | } | |
6781 | ||
6782 | /* A structure used to record a list of sections, independently | |
6783 | of the next and prev fields in the asection structure. */ | |
6784 | typedef struct section_list | |
6785 | { | |
6786 | asection *sec; | |
6787 | struct section_list *next; | |
6788 | struct section_list *prev; | |
6789 | } | |
6790 | section_list; | |
6791 | ||
6792 | /* Unfortunately we need to keep a list of sections for which | |
6793 | an _aarch64_elf_section_data structure has been allocated. This | |
cec5225b | 6794 | is because it is possible for functions like elfNN_aarch64_write_section |
a06ea964 NC |
6795 | to be called on a section which has had an elf_data_structure |
6796 | allocated for it (and so the used_by_bfd field is valid) but | |
6797 | for which the AArch64 extended version of this structure - the | |
6798 | _aarch64_elf_section_data structure - has not been allocated. */ | |
6799 | static section_list *sections_with_aarch64_elf_section_data = NULL; | |
6800 | ||
6801 | static void | |
6802 | record_section_with_aarch64_elf_section_data (asection *sec) | |
6803 | { | |
6804 | struct section_list *entry; | |
6805 | ||
6806 | entry = bfd_malloc (sizeof (*entry)); | |
6807 | if (entry == NULL) | |
6808 | return; | |
6809 | entry->sec = sec; | |
6810 | entry->next = sections_with_aarch64_elf_section_data; | |
6811 | entry->prev = NULL; | |
6812 | if (entry->next != NULL) | |
6813 | entry->next->prev = entry; | |
6814 | sections_with_aarch64_elf_section_data = entry; | |
6815 | } | |
6816 | ||
6817 | static struct section_list * | |
6818 | find_aarch64_elf_section_entry (asection *sec) | |
6819 | { | |
6820 | struct section_list *entry; | |
6821 | static struct section_list *last_entry = NULL; | |
6822 | ||
6823 | /* This is a short cut for the typical case where the sections are added | |
6824 | to the sections_with_aarch64_elf_section_data list in forward order and | |
6825 | then looked up here in backwards order. This makes a real difference | |
6826 | to the ld-srec/sec64k.exp linker test. */ | |
6827 | entry = sections_with_aarch64_elf_section_data; | |
6828 | if (last_entry != NULL) | |
6829 | { | |
6830 | if (last_entry->sec == sec) | |
6831 | entry = last_entry; | |
6832 | else if (last_entry->next != NULL && last_entry->next->sec == sec) | |
6833 | entry = last_entry->next; | |
6834 | } | |
6835 | ||
6836 | for (; entry; entry = entry->next) | |
6837 | if (entry->sec == sec) | |
6838 | break; | |
6839 | ||
6840 | if (entry) | |
6841 | /* Record the entry prior to this one - it is the entry we are | |
6842 | most likely to want to locate next time. Also this way if we | |
6843 | have been called from | |
6844 | unrecord_section_with_aarch64_elf_section_data () we will not | |
6845 | be caching a pointer that is about to be freed. */ | |
6846 | last_entry = entry->prev; | |
6847 | ||
6848 | return entry; | |
6849 | } | |
6850 | ||
6851 | static void | |
6852 | unrecord_section_with_aarch64_elf_section_data (asection *sec) | |
6853 | { | |
6854 | struct section_list *entry; | |
6855 | ||
6856 | entry = find_aarch64_elf_section_entry (sec); | |
6857 | ||
6858 | if (entry) | |
6859 | { | |
6860 | if (entry->prev != NULL) | |
6861 | entry->prev->next = entry->next; | |
6862 | if (entry->next != NULL) | |
6863 | entry->next->prev = entry->prev; | |
6864 | if (entry == sections_with_aarch64_elf_section_data) | |
6865 | sections_with_aarch64_elf_section_data = entry->next; | |
6866 | free (entry); | |
6867 | } | |
6868 | } | |
6869 | ||
6870 | ||
6871 | typedef struct | |
6872 | { | |
6873 | void *finfo; | |
6874 | struct bfd_link_info *info; | |
6875 | asection *sec; | |
6876 | int sec_shndx; | |
6877 | int (*func) (void *, const char *, Elf_Internal_Sym *, | |
6878 | asection *, struct elf_link_hash_entry *); | |
6879 | } output_arch_syminfo; | |
6880 | ||
6881 | enum map_symbol_type | |
6882 | { | |
6883 | AARCH64_MAP_INSN, | |
6884 | AARCH64_MAP_DATA | |
6885 | }; | |
6886 | ||
6887 | ||
6888 | /* Output a single mapping symbol. */ | |
6889 | ||
6890 | static bfd_boolean | |
cec5225b | 6891 | elfNN_aarch64_output_map_sym (output_arch_syminfo *osi, |
a06ea964 NC |
6892 | enum map_symbol_type type, bfd_vma offset) |
6893 | { | |
6894 | static const char *names[2] = { "$x", "$d" }; | |
6895 | Elf_Internal_Sym sym; | |
6896 | ||
6897 | sym.st_value = (osi->sec->output_section->vma | |
6898 | + osi->sec->output_offset + offset); | |
6899 | sym.st_size = 0; | |
6900 | sym.st_other = 0; | |
6901 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
6902 | sym.st_shndx = osi->sec_shndx; | |
6903 | return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1; | |
6904 | } | |
6905 | ||
6906 | ||
6907 | ||
6908 | /* Output mapping symbols for PLT entries associated with H. */ | |
6909 | ||
6910 | static bfd_boolean | |
cec5225b | 6911 | elfNN_aarch64_output_plt_map (struct elf_link_hash_entry *h, void *inf) |
a06ea964 NC |
6912 | { |
6913 | output_arch_syminfo *osi = (output_arch_syminfo *) inf; | |
6914 | bfd_vma addr; | |
6915 | ||
6916 | if (h->root.type == bfd_link_hash_indirect) | |
6917 | return TRUE; | |
6918 | ||
6919 | if (h->root.type == bfd_link_hash_warning) | |
6920 | /* When warning symbols are created, they **replace** the "real" | |
6921 | entry in the hash table, thus we never get to see the real | |
6922 | symbol in a hash traversal. So look at it now. */ | |
6923 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6924 | ||
6925 | if (h->plt.offset == (bfd_vma) - 1) | |
6926 | return TRUE; | |
6927 | ||
6928 | addr = h->plt.offset; | |
6929 | if (addr == 32) | |
6930 | { | |
cec5225b | 6931 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 NC |
6932 | return FALSE; |
6933 | } | |
6934 | return TRUE; | |
6935 | } | |
6936 | ||
6937 | ||
6938 | /* Output a single local symbol for a generated stub. */ | |
6939 | ||
6940 | static bfd_boolean | |
cec5225b | 6941 | elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name, |
a06ea964 NC |
6942 | bfd_vma offset, bfd_vma size) |
6943 | { | |
6944 | Elf_Internal_Sym sym; | |
6945 | ||
6946 | sym.st_value = (osi->sec->output_section->vma | |
6947 | + osi->sec->output_offset + offset); | |
6948 | sym.st_size = size; | |
6949 | sym.st_other = 0; | |
6950 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
6951 | sym.st_shndx = osi->sec_shndx; | |
6952 | return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1; | |
6953 | } | |
6954 | ||
6955 | static bfd_boolean | |
6956 | aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) | |
6957 | { | |
cec5225b | 6958 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
6959 | asection *stub_sec; |
6960 | bfd_vma addr; | |
6961 | char *stub_name; | |
6962 | output_arch_syminfo *osi; | |
6963 | ||
6964 | /* Massage our args to the form they really have. */ | |
cec5225b | 6965 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
6966 | osi = (output_arch_syminfo *) in_arg; |
6967 | ||
6968 | stub_sec = stub_entry->stub_sec; | |
6969 | ||
6970 | /* Ensure this stub is attached to the current section being | |
6971 | processed. */ | |
6972 | if (stub_sec != osi->sec) | |
6973 | return TRUE; | |
6974 | ||
6975 | addr = (bfd_vma) stub_entry->stub_offset; | |
6976 | ||
6977 | stub_name = stub_entry->output_name; | |
6978 | ||
6979 | switch (stub_entry->stub_type) | |
6980 | { | |
6981 | case aarch64_stub_adrp_branch: | |
cec5225b | 6982 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, |
a06ea964 NC |
6983 | sizeof (aarch64_adrp_branch_stub))) |
6984 | return FALSE; | |
cec5225b | 6985 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 NC |
6986 | return FALSE; |
6987 | break; | |
6988 | case aarch64_stub_long_branch: | |
cec5225b | 6989 | if (!elfNN_aarch64_output_stub_sym |
a06ea964 NC |
6990 | (osi, stub_name, addr, sizeof (aarch64_long_branch_stub))) |
6991 | return FALSE; | |
cec5225b | 6992 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 | 6993 | return FALSE; |
cec5225b | 6994 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16)) |
a06ea964 NC |
6995 | return FALSE; |
6996 | break; | |
68fcca92 JW |
6997 | case aarch64_stub_erratum_835769_veneer: |
6998 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
6999 | sizeof (aarch64_erratum_835769_stub))) | |
7000 | return FALSE; | |
7001 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
7002 | return FALSE; | |
7003 | break; | |
4106101c MS |
7004 | case aarch64_stub_erratum_843419_veneer: |
7005 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
7006 | sizeof (aarch64_erratum_843419_stub))) | |
7007 | return FALSE; | |
7008 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
7009 | return FALSE; | |
7010 | break; | |
7011 | ||
a06ea964 | 7012 | default: |
8e2fe09f | 7013 | abort (); |
a06ea964 NC |
7014 | } |
7015 | ||
7016 | return TRUE; | |
7017 | } | |
7018 | ||
7019 | /* Output mapping symbols for linker generated sections. */ | |
7020 | ||
7021 | static bfd_boolean | |
cec5225b | 7022 | elfNN_aarch64_output_arch_local_syms (bfd *output_bfd, |
a06ea964 NC |
7023 | struct bfd_link_info *info, |
7024 | void *finfo, | |
7025 | int (*func) (void *, const char *, | |
7026 | Elf_Internal_Sym *, | |
7027 | asection *, | |
7028 | struct elf_link_hash_entry | |
7029 | *)) | |
7030 | { | |
7031 | output_arch_syminfo osi; | |
cec5225b | 7032 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 7033 | |
cec5225b | 7034 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7035 | |
7036 | osi.finfo = finfo; | |
7037 | osi.info = info; | |
7038 | osi.func = func; | |
7039 | ||
7040 | /* Long calls stubs. */ | |
7041 | if (htab->stub_bfd && htab->stub_bfd->sections) | |
7042 | { | |
7043 | asection *stub_sec; | |
7044 | ||
7045 | for (stub_sec = htab->stub_bfd->sections; | |
7046 | stub_sec != NULL; stub_sec = stub_sec->next) | |
7047 | { | |
7048 | /* Ignore non-stub sections. */ | |
7049 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
7050 | continue; | |
7051 | ||
7052 | osi.sec = stub_sec; | |
7053 | ||
7054 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
7055 | (output_bfd, osi.sec->output_section); | |
7056 | ||
61865519 MS |
7057 | /* The first instruction in a stub is always a branch. */ |
7058 | if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0)) | |
7059 | return FALSE; | |
7060 | ||
a06ea964 NC |
7061 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub, |
7062 | &osi); | |
7063 | } | |
7064 | } | |
7065 | ||
7066 | /* Finally, output mapping symbols for the PLT. */ | |
7067 | if (!htab->root.splt || htab->root.splt->size == 0) | |
7068 | return TRUE; | |
7069 | ||
7070 | /* For now live without mapping symbols for the plt. */ | |
7071 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
7072 | (output_bfd, htab->root.splt->output_section); | |
7073 | osi.sec = htab->root.splt; | |
7074 | ||
cec5225b | 7075 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_output_plt_map, |
a06ea964 NC |
7076 | (void *) &osi); |
7077 | ||
7078 | return TRUE; | |
7079 | ||
7080 | } | |
7081 | ||
7082 | /* Allocate target specific section data. */ | |
7083 | ||
7084 | static bfd_boolean | |
cec5225b | 7085 | elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec) |
a06ea964 NC |
7086 | { |
7087 | if (!sec->used_by_bfd) | |
7088 | { | |
7089 | _aarch64_elf_section_data *sdata; | |
7090 | bfd_size_type amt = sizeof (*sdata); | |
7091 | ||
7092 | sdata = bfd_zalloc (abfd, amt); | |
7093 | if (sdata == NULL) | |
7094 | return FALSE; | |
7095 | sec->used_by_bfd = sdata; | |
7096 | } | |
7097 | ||
7098 | record_section_with_aarch64_elf_section_data (sec); | |
7099 | ||
7100 | return _bfd_elf_new_section_hook (abfd, sec); | |
7101 | } | |
7102 | ||
7103 | ||
7104 | static void | |
7105 | unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
7106 | asection *sec, | |
7107 | void *ignore ATTRIBUTE_UNUSED) | |
7108 | { | |
7109 | unrecord_section_with_aarch64_elf_section_data (sec); | |
7110 | } | |
7111 | ||
7112 | static bfd_boolean | |
cec5225b | 7113 | elfNN_aarch64_close_and_cleanup (bfd *abfd) |
a06ea964 NC |
7114 | { |
7115 | if (abfd->sections) | |
7116 | bfd_map_over_sections (abfd, | |
7117 | unrecord_section_via_map_over_sections, NULL); | |
7118 | ||
7119 | return _bfd_elf_close_and_cleanup (abfd); | |
7120 | } | |
7121 | ||
7122 | static bfd_boolean | |
cec5225b | 7123 | elfNN_aarch64_bfd_free_cached_info (bfd *abfd) |
a06ea964 NC |
7124 | { |
7125 | if (abfd->sections) | |
7126 | bfd_map_over_sections (abfd, | |
7127 | unrecord_section_via_map_over_sections, NULL); | |
7128 | ||
7129 | return _bfd_free_cached_info (abfd); | |
7130 | } | |
7131 | ||
a06ea964 NC |
7132 | /* Create dynamic sections. This is different from the ARM backend in that |
7133 | the got, plt, gotplt and their relocation sections are all created in the | |
7134 | standard part of the bfd elf backend. */ | |
7135 | ||
7136 | static bfd_boolean | |
cec5225b | 7137 | elfNN_aarch64_create_dynamic_sections (bfd *dynobj, |
a06ea964 NC |
7138 | struct bfd_link_info *info) |
7139 | { | |
cec5225b | 7140 | struct elf_aarch64_link_hash_table *htab; |
cc0efaa8 MS |
7141 | |
7142 | /* We need to create .got section. */ | |
7143 | if (!aarch64_elf_create_got_section (dynobj, info)) | |
7144 | return FALSE; | |
a06ea964 NC |
7145 | |
7146 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
7147 | return FALSE; | |
7148 | ||
cec5225b | 7149 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7150 | htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss"); |
7151 | if (!info->shared) | |
7152 | htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss"); | |
7153 | ||
7154 | if (!htab->sdynbss || (!info->shared && !htab->srelbss)) | |
7155 | abort (); | |
7156 | ||
a06ea964 NC |
7157 | return TRUE; |
7158 | } | |
7159 | ||
7160 | ||
7161 | /* Allocate space in .plt, .got and associated reloc sections for | |
7162 | dynamic relocs. */ | |
7163 | ||
7164 | static bfd_boolean | |
cec5225b | 7165 | elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
a06ea964 NC |
7166 | { |
7167 | struct bfd_link_info *info; | |
cec5225b YZ |
7168 | struct elf_aarch64_link_hash_table *htab; |
7169 | struct elf_aarch64_link_hash_entry *eh; | |
a06ea964 NC |
7170 | struct elf_dyn_relocs *p; |
7171 | ||
7172 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
7173 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
7174 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
7175 | ||
7176 | There is no need to process bfd_link_hash_indirect symbols here | |
7177 | because we will also be presented with the concrete instance of | |
cec5225b | 7178 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been |
a06ea964 NC |
7179 | called to copy all relevant data from the generic to the concrete |
7180 | symbol instance. | |
7181 | */ | |
7182 | if (h->root.type == bfd_link_hash_indirect) | |
7183 | return TRUE; | |
7184 | ||
7185 | if (h->root.type == bfd_link_hash_warning) | |
7186 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7187 | ||
7188 | info = (struct bfd_link_info *) inf; | |
cec5225b | 7189 | htab = elf_aarch64_hash_table (info); |
a06ea964 | 7190 | |
1419bbe5 WN |
7191 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
7192 | here if it is defined and referenced in a non-shared object. */ | |
7193 | if (h->type == STT_GNU_IFUNC | |
7194 | && h->def_regular) | |
7195 | return TRUE; | |
7196 | else if (htab->root.dynamic_sections_created && h->plt.refcount > 0) | |
a06ea964 NC |
7197 | { |
7198 | /* Make sure this symbol is output as a dynamic symbol. | |
7199 | Undefined weak syms won't yet be marked as dynamic. */ | |
7200 | if (h->dynindx == -1 && !h->forced_local) | |
7201 | { | |
7202 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
7203 | return FALSE; | |
7204 | } | |
7205 | ||
7206 | if (info->shared || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
7207 | { | |
7208 | asection *s = htab->root.splt; | |
7209 | ||
7210 | /* If this is the first .plt entry, make room for the special | |
7211 | first entry. */ | |
7212 | if (s->size == 0) | |
7213 | s->size += htab->plt_header_size; | |
7214 | ||
7215 | h->plt.offset = s->size; | |
7216 | ||
7217 | /* If this symbol is not defined in a regular file, and we are | |
7218 | not generating a shared library, then set the symbol to this | |
7219 | location in the .plt. This is required to make function | |
7220 | pointers compare as equal between the normal executable and | |
7221 | the shared library. */ | |
7222 | if (!info->shared && !h->def_regular) | |
7223 | { | |
7224 | h->root.u.def.section = s; | |
7225 | h->root.u.def.value = h->plt.offset; | |
7226 | } | |
7227 | ||
7228 | /* Make room for this entry. For now we only create the | |
7229 | small model PLT entries. We later need to find a way | |
7230 | of relaxing into these from the large model PLT entries. */ | |
7231 | s->size += PLT_SMALL_ENTRY_SIZE; | |
7232 | ||
7233 | /* We also need to make an entry in the .got.plt section, which | |
7234 | will be placed in the .got section by the linker script. */ | |
7235 | htab->root.sgotplt->size += GOT_ENTRY_SIZE; | |
7236 | ||
7237 | /* We also need to make an entry in the .rela.plt section. */ | |
7238 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
7239 | ||
7240 | /* We need to ensure that all GOT entries that serve the PLT | |
7241 | are consecutive with the special GOT slots [0] [1] and | |
7242 | [2]. Any addtional relocations, such as | |
7243 | R_AARCH64_TLSDESC, must be placed after the PLT related | |
7244 | entries. We abuse the reloc_count such that during | |
7245 | sizing we adjust reloc_count to indicate the number of | |
7246 | PLT related reserved entries. In subsequent phases when | |
7247 | filling in the contents of the reloc entries, PLT related | |
7248 | entries are placed by computing their PLT index (0 | |
7249 | .. reloc_count). While other none PLT relocs are placed | |
7250 | at the slot indicated by reloc_count and reloc_count is | |
7251 | updated. */ | |
7252 | ||
7253 | htab->root.srelplt->reloc_count++; | |
7254 | } | |
7255 | else | |
7256 | { | |
7257 | h->plt.offset = (bfd_vma) - 1; | |
7258 | h->needs_plt = 0; | |
7259 | } | |
7260 | } | |
7261 | else | |
7262 | { | |
7263 | h->plt.offset = (bfd_vma) - 1; | |
7264 | h->needs_plt = 0; | |
7265 | } | |
7266 | ||
cec5225b | 7267 | eh = (struct elf_aarch64_link_hash_entry *) h; |
a06ea964 NC |
7268 | eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; |
7269 | ||
7270 | if (h->got.refcount > 0) | |
7271 | { | |
7272 | bfd_boolean dyn; | |
cec5225b | 7273 | unsigned got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
7274 | |
7275 | h->got.offset = (bfd_vma) - 1; | |
7276 | ||
7277 | dyn = htab->root.dynamic_sections_created; | |
7278 | ||
7279 | /* Make sure this symbol is output as a dynamic symbol. | |
7280 | Undefined weak syms won't yet be marked as dynamic. */ | |
7281 | if (dyn && h->dynindx == -1 && !h->forced_local) | |
7282 | { | |
7283 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
7284 | return FALSE; | |
7285 | } | |
7286 | ||
7287 | if (got_type == GOT_UNKNOWN) | |
7288 | { | |
7289 | } | |
7290 | else if (got_type == GOT_NORMAL) | |
7291 | { | |
7292 | h->got.offset = htab->root.sgot->size; | |
7293 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
7294 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7295 | || h->root.type != bfd_link_hash_undefweak) | |
7296 | && (info->shared | |
7297 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
7298 | { | |
7299 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
7300 | } | |
7301 | } | |
7302 | else | |
7303 | { | |
7304 | int indx; | |
7305 | if (got_type & GOT_TLSDESC_GD) | |
7306 | { | |
7307 | eh->tlsdesc_got_jump_table_offset = | |
7308 | (htab->root.sgotplt->size | |
7309 | - aarch64_compute_jump_table_size (htab)); | |
7310 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
7311 | h->got.offset = (bfd_vma) - 2; | |
7312 | } | |
7313 | ||
7314 | if (got_type & GOT_TLS_GD) | |
7315 | { | |
7316 | h->got.offset = htab->root.sgot->size; | |
7317 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
7318 | } | |
7319 | ||
7320 | if (got_type & GOT_TLS_IE) | |
7321 | { | |
7322 | h->got.offset = htab->root.sgot->size; | |
7323 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
7324 | } | |
7325 | ||
7326 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
7327 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7328 | || h->root.type != bfd_link_hash_undefweak) | |
7329 | && (info->shared | |
7330 | || indx != 0 | |
7331 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
7332 | { | |
7333 | if (got_type & GOT_TLSDESC_GD) | |
7334 | { | |
7335 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
7336 | /* Note reloc_count not incremented here! We have | |
7337 | already adjusted reloc_count for this relocation | |
7338 | type. */ | |
7339 | ||
7340 | /* TLSDESC PLT is now needed, but not yet determined. */ | |
7341 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
7342 | } | |
7343 | ||
7344 | if (got_type & GOT_TLS_GD) | |
7345 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
7346 | ||
7347 | if (got_type & GOT_TLS_IE) | |
7348 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
7349 | } | |
7350 | } | |
7351 | } | |
7352 | else | |
7353 | { | |
7354 | h->got.offset = (bfd_vma) - 1; | |
7355 | } | |
7356 | ||
7357 | if (eh->dyn_relocs == NULL) | |
7358 | return TRUE; | |
7359 | ||
7360 | /* In the shared -Bsymbolic case, discard space allocated for | |
7361 | dynamic pc-relative relocs against symbols which turn out to be | |
7362 | defined in regular objects. For the normal shared case, discard | |
7363 | space for pc-relative relocs that have become local due to symbol | |
7364 | visibility changes. */ | |
7365 | ||
7366 | if (info->shared) | |
7367 | { | |
7368 | /* Relocs that use pc_count are those that appear on a call | |
7369 | insn, or certain REL relocs that can generated via assembly. | |
7370 | We want calls to protected symbols to resolve directly to the | |
7371 | function rather than going via the plt. If people want | |
7372 | function pointer comparisons to work as expected then they | |
7373 | should avoid writing weird assembly. */ | |
7374 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
7375 | { | |
7376 | struct elf_dyn_relocs **pp; | |
7377 | ||
7378 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) | |
7379 | { | |
7380 | p->count -= p->pc_count; | |
7381 | p->pc_count = 0; | |
7382 | if (p->count == 0) | |
7383 | *pp = p->next; | |
7384 | else | |
7385 | pp = &p->next; | |
7386 | } | |
7387 | } | |
7388 | ||
7389 | /* Also discard relocs on undefined weak syms with non-default | |
7390 | visibility. */ | |
7391 | if (eh->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak) | |
7392 | { | |
7393 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
7394 | eh->dyn_relocs = NULL; | |
7395 | ||
7396 | /* Make sure undefined weak symbols are output as a dynamic | |
7397 | symbol in PIEs. */ | |
7398 | else if (h->dynindx == -1 | |
7399 | && !h->forced_local | |
7400 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
7401 | return FALSE; | |
7402 | } | |
7403 | ||
7404 | } | |
7405 | else if (ELIMINATE_COPY_RELOCS) | |
7406 | { | |
7407 | /* For the non-shared case, discard space for relocs against | |
7408 | symbols which turn out to need copy relocs or are not | |
7409 | dynamic. */ | |
7410 | ||
7411 | if (!h->non_got_ref | |
7412 | && ((h->def_dynamic | |
7413 | && !h->def_regular) | |
7414 | || (htab->root.dynamic_sections_created | |
7415 | && (h->root.type == bfd_link_hash_undefweak | |
7416 | || h->root.type == bfd_link_hash_undefined)))) | |
7417 | { | |
7418 | /* Make sure this symbol is output as a dynamic symbol. | |
7419 | Undefined weak syms won't yet be marked as dynamic. */ | |
7420 | if (h->dynindx == -1 | |
7421 | && !h->forced_local | |
7422 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
7423 | return FALSE; | |
7424 | ||
7425 | /* If that succeeded, we know we'll be keeping all the | |
7426 | relocs. */ | |
7427 | if (h->dynindx != -1) | |
7428 | goto keep; | |
7429 | } | |
7430 | ||
7431 | eh->dyn_relocs = NULL; | |
7432 | ||
7433 | keep:; | |
7434 | } | |
7435 | ||
7436 | /* Finally, allocate space. */ | |
7437 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7438 | { | |
7439 | asection *sreloc; | |
7440 | ||
7441 | sreloc = elf_section_data (p->sec)->sreloc; | |
7442 | ||
7443 | BFD_ASSERT (sreloc != NULL); | |
7444 | ||
7445 | sreloc->size += p->count * RELOC_SIZE (htab); | |
7446 | } | |
7447 | ||
7448 | return TRUE; | |
7449 | } | |
7450 | ||
1419bbe5 WN |
7451 | /* Allocate space in .plt, .got and associated reloc sections for |
7452 | ifunc dynamic relocs. */ | |
7453 | ||
7454 | static bfd_boolean | |
7455 | elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h, | |
7456 | void *inf) | |
7457 | { | |
7458 | struct bfd_link_info *info; | |
7459 | struct elf_aarch64_link_hash_table *htab; | |
7460 | struct elf_aarch64_link_hash_entry *eh; | |
7461 | ||
7462 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
7463 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
7464 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
7465 | ||
7466 | There is no need to process bfd_link_hash_indirect symbols here | |
7467 | because we will also be presented with the concrete instance of | |
7468 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been | |
7469 | called to copy all relevant data from the generic to the concrete | |
7470 | symbol instance. | |
7471 | */ | |
7472 | if (h->root.type == bfd_link_hash_indirect) | |
7473 | return TRUE; | |
7474 | ||
7475 | if (h->root.type == bfd_link_hash_warning) | |
7476 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7477 | ||
7478 | info = (struct bfd_link_info *) inf; | |
7479 | htab = elf_aarch64_hash_table (info); | |
7480 | ||
7481 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
7482 | ||
7483 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it | |
7484 | here if it is defined and referenced in a non-shared object. */ | |
7485 | if (h->type == STT_GNU_IFUNC | |
7486 | && h->def_regular) | |
7487 | return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, | |
7488 | &eh->dyn_relocs, | |
7489 | htab->plt_entry_size, | |
7490 | htab->plt_header_size, | |
7491 | GOT_ENTRY_SIZE); | |
7492 | return TRUE; | |
7493 | } | |
7494 | ||
7495 | /* Allocate space in .plt, .got and associated reloc sections for | |
7496 | local dynamic relocs. */ | |
7497 | ||
7498 | static bfd_boolean | |
7499 | elfNN_aarch64_allocate_local_dynrelocs (void **slot, void *inf) | |
7500 | { | |
7501 | struct elf_link_hash_entry *h | |
7502 | = (struct elf_link_hash_entry *) *slot; | |
7503 | ||
7504 | if (h->type != STT_GNU_IFUNC | |
7505 | || !h->def_regular | |
7506 | || !h->ref_regular | |
7507 | || !h->forced_local | |
7508 | || h->root.type != bfd_link_hash_defined) | |
7509 | abort (); | |
7510 | ||
7511 | return elfNN_aarch64_allocate_dynrelocs (h, inf); | |
7512 | } | |
7513 | ||
7514 | /* Allocate space in .plt, .got and associated reloc sections for | |
7515 | local ifunc dynamic relocs. */ | |
7516 | ||
7517 | static bfd_boolean | |
7518 | elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf) | |
7519 | { | |
7520 | struct elf_link_hash_entry *h | |
7521 | = (struct elf_link_hash_entry *) *slot; | |
7522 | ||
7523 | if (h->type != STT_GNU_IFUNC | |
7524 | || !h->def_regular | |
7525 | || !h->ref_regular | |
7526 | || !h->forced_local | |
7527 | || h->root.type != bfd_link_hash_defined) | |
7528 | abort (); | |
7529 | ||
7530 | return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf); | |
7531 | } | |
a06ea964 | 7532 | |
a06ea964 NC |
7533 | /* This is the most important function of all . Innocuosly named |
7534 | though ! */ | |
7535 | static bfd_boolean | |
cec5225b | 7536 | elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
7537 | struct bfd_link_info *info) |
7538 | { | |
cec5225b | 7539 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
7540 | bfd *dynobj; |
7541 | asection *s; | |
7542 | bfd_boolean relocs; | |
7543 | bfd *ibfd; | |
7544 | ||
cec5225b | 7545 | htab = elf_aarch64_hash_table ((info)); |
a06ea964 NC |
7546 | dynobj = htab->root.dynobj; |
7547 | ||
7548 | BFD_ASSERT (dynobj != NULL); | |
7549 | ||
7550 | if (htab->root.dynamic_sections_created) | |
7551 | { | |
7552 | if (info->executable) | |
7553 | { | |
7554 | s = bfd_get_linker_section (dynobj, ".interp"); | |
7555 | if (s == NULL) | |
7556 | abort (); | |
7557 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
7558 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
7559 | } | |
7560 | } | |
7561 | ||
7562 | /* Set up .got offsets for local syms, and space for local dynamic | |
7563 | relocs. */ | |
c72f2fb2 | 7564 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
a06ea964 NC |
7565 | { |
7566 | struct elf_aarch64_local_symbol *locals = NULL; | |
7567 | Elf_Internal_Shdr *symtab_hdr; | |
7568 | asection *srel; | |
7569 | unsigned int i; | |
7570 | ||
7571 | if (!is_aarch64_elf (ibfd)) | |
7572 | continue; | |
7573 | ||
7574 | for (s = ibfd->sections; s != NULL; s = s->next) | |
7575 | { | |
7576 | struct elf_dyn_relocs *p; | |
7577 | ||
7578 | for (p = (struct elf_dyn_relocs *) | |
7579 | (elf_section_data (s)->local_dynrel); p != NULL; p = p->next) | |
7580 | { | |
7581 | if (!bfd_is_abs_section (p->sec) | |
7582 | && bfd_is_abs_section (p->sec->output_section)) | |
7583 | { | |
7584 | /* Input section has been discarded, either because | |
7585 | it is a copy of a linkonce section or due to | |
7586 | linker script /DISCARD/, so we'll be discarding | |
7587 | the relocs too. */ | |
7588 | } | |
7589 | else if (p->count != 0) | |
7590 | { | |
7591 | srel = elf_section_data (p->sec)->sreloc; | |
7592 | srel->size += p->count * RELOC_SIZE (htab); | |
7593 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
7594 | info->flags |= DF_TEXTREL; | |
7595 | } | |
7596 | } | |
7597 | } | |
7598 | ||
cec5225b | 7599 | locals = elf_aarch64_locals (ibfd); |
a06ea964 NC |
7600 | if (!locals) |
7601 | continue; | |
7602 | ||
7603 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
7604 | srel = htab->root.srelgot; | |
7605 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
7606 | { | |
7607 | locals[i].got_offset = (bfd_vma) - 1; | |
7608 | locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
7609 | if (locals[i].got_refcount > 0) | |
7610 | { | |
7611 | unsigned got_type = locals[i].got_type; | |
7612 | if (got_type & GOT_TLSDESC_GD) | |
7613 | { | |
7614 | locals[i].tlsdesc_got_jump_table_offset = | |
7615 | (htab->root.sgotplt->size | |
7616 | - aarch64_compute_jump_table_size (htab)); | |
7617 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
7618 | locals[i].got_offset = (bfd_vma) - 2; | |
7619 | } | |
7620 | ||
7621 | if (got_type & GOT_TLS_GD) | |
7622 | { | |
7623 | locals[i].got_offset = htab->root.sgot->size; | |
7624 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
7625 | } | |
7626 | ||
b53b1bed JW |
7627 | if (got_type & GOT_TLS_IE |
7628 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
7629 | { |
7630 | locals[i].got_offset = htab->root.sgot->size; | |
7631 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
7632 | } | |
7633 | ||
7634 | if (got_type == GOT_UNKNOWN) | |
7635 | { | |
7636 | } | |
7637 | ||
a06ea964 NC |
7638 | if (info->shared) |
7639 | { | |
7640 | if (got_type & GOT_TLSDESC_GD) | |
7641 | { | |
7642 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
7643 | /* Note RELOC_COUNT not incremented here! */ | |
7644 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
7645 | } | |
7646 | ||
7647 | if (got_type & GOT_TLS_GD) | |
7648 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
7649 | ||
b53b1bed JW |
7650 | if (got_type & GOT_TLS_IE |
7651 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
7652 | htab->root.srelgot->size += RELOC_SIZE (htab); |
7653 | } | |
7654 | } | |
7655 | else | |
7656 | { | |
7657 | locals[i].got_refcount = (bfd_vma) - 1; | |
7658 | } | |
7659 | } | |
7660 | } | |
7661 | ||
7662 | ||
7663 | /* Allocate global sym .plt and .got entries, and space for global | |
7664 | sym dynamic relocs. */ | |
cec5225b | 7665 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs, |
a06ea964 NC |
7666 | info); |
7667 | ||
1419bbe5 WN |
7668 | /* Allocate global ifunc sym .plt and .got entries, and space for global |
7669 | ifunc sym dynamic relocs. */ | |
7670 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs, | |
7671 | info); | |
7672 | ||
7673 | /* Allocate .plt and .got entries, and space for local symbols. */ | |
7674 | htab_traverse (htab->loc_hash_table, | |
7675 | elfNN_aarch64_allocate_local_dynrelocs, | |
7676 | info); | |
7677 | ||
7678 | /* Allocate .plt and .got entries, and space for local ifunc symbols. */ | |
7679 | htab_traverse (htab->loc_hash_table, | |
7680 | elfNN_aarch64_allocate_local_ifunc_dynrelocs, | |
7681 | info); | |
a06ea964 NC |
7682 | |
7683 | /* For every jump slot reserved in the sgotplt, reloc_count is | |
7684 | incremented. However, when we reserve space for TLS descriptors, | |
7685 | it's not incremented, so in order to compute the space reserved | |
7686 | for them, it suffices to multiply the reloc count by the jump | |
7687 | slot size. */ | |
7688 | ||
7689 | if (htab->root.srelplt) | |
8847944f | 7690 | htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab); |
a06ea964 NC |
7691 | |
7692 | if (htab->tlsdesc_plt) | |
7693 | { | |
7694 | if (htab->root.splt->size == 0) | |
7695 | htab->root.splt->size += PLT_ENTRY_SIZE; | |
7696 | ||
7697 | htab->tlsdesc_plt = htab->root.splt->size; | |
7698 | htab->root.splt->size += PLT_TLSDESC_ENTRY_SIZE; | |
7699 | ||
7700 | /* If we're not using lazy TLS relocations, don't generate the | |
7701 | GOT entry required. */ | |
7702 | if (!(info->flags & DF_BIND_NOW)) | |
7703 | { | |
7704 | htab->dt_tlsdesc_got = htab->root.sgot->size; | |
7705 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
7706 | } | |
7707 | } | |
7708 | ||
68fcca92 | 7709 | /* Init mapping symbols information to use later to distingush between |
4106101c MS |
7710 | code and data while scanning for errata. */ |
7711 | if (htab->fix_erratum_835769 || htab->fix_erratum_843419) | |
68fcca92 JW |
7712 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
7713 | { | |
7714 | if (!is_aarch64_elf (ibfd)) | |
7715 | continue; | |
7716 | bfd_elfNN_aarch64_init_maps (ibfd); | |
7717 | } | |
7718 | ||
a06ea964 NC |
7719 | /* We now have determined the sizes of the various dynamic sections. |
7720 | Allocate memory for them. */ | |
7721 | relocs = FALSE; | |
7722 | for (s = dynobj->sections; s != NULL; s = s->next) | |
7723 | { | |
7724 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
7725 | continue; | |
7726 | ||
7727 | if (s == htab->root.splt | |
7728 | || s == htab->root.sgot | |
7729 | || s == htab->root.sgotplt | |
7730 | || s == htab->root.iplt | |
7731 | || s == htab->root.igotplt || s == htab->sdynbss) | |
7732 | { | |
7733 | /* Strip this section if we don't need it; see the | |
7734 | comment below. */ | |
7735 | } | |
7736 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) | |
7737 | { | |
7738 | if (s->size != 0 && s != htab->root.srelplt) | |
7739 | relocs = TRUE; | |
7740 | ||
7741 | /* We use the reloc_count field as a counter if we need | |
7742 | to copy relocs into the output file. */ | |
7743 | if (s != htab->root.srelplt) | |
7744 | s->reloc_count = 0; | |
7745 | } | |
7746 | else | |
7747 | { | |
7748 | /* It's not one of our sections, so don't allocate space. */ | |
7749 | continue; | |
7750 | } | |
7751 | ||
7752 | if (s->size == 0) | |
7753 | { | |
7754 | /* If we don't need this section, strip it from the | |
7755 | output file. This is mostly to handle .rela.bss and | |
7756 | .rela.plt. We must create both sections in | |
7757 | create_dynamic_sections, because they must be created | |
7758 | before the linker maps input sections to output | |
7759 | sections. The linker does that before | |
7760 | adjust_dynamic_symbol is called, and it is that | |
7761 | function which decides whether anything needs to go | |
7762 | into these sections. */ | |
7763 | ||
7764 | s->flags |= SEC_EXCLUDE; | |
7765 | continue; | |
7766 | } | |
7767 | ||
7768 | if ((s->flags & SEC_HAS_CONTENTS) == 0) | |
7769 | continue; | |
7770 | ||
7771 | /* Allocate memory for the section contents. We use bfd_zalloc | |
7772 | here in case unused entries are not reclaimed before the | |
7773 | section's contents are written out. This should not happen, | |
7774 | but this way if it does, we get a R_AARCH64_NONE reloc instead | |
7775 | of garbage. */ | |
7776 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
7777 | if (s->contents == NULL) | |
7778 | return FALSE; | |
7779 | } | |
7780 | ||
7781 | if (htab->root.dynamic_sections_created) | |
7782 | { | |
7783 | /* Add some entries to the .dynamic section. We fill in the | |
cec5225b | 7784 | values later, in elfNN_aarch64_finish_dynamic_sections, but we |
a06ea964 NC |
7785 | must add the entries now so that we get the correct size for |
7786 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
7787 | dynamic linker and used by the debugger. */ | |
7788 | #define add_dynamic_entry(TAG, VAL) \ | |
7789 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
7790 | ||
7791 | if (info->executable) | |
7792 | { | |
7793 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
7794 | return FALSE; | |
7795 | } | |
7796 | ||
7797 | if (htab->root.splt->size != 0) | |
7798 | { | |
7799 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
7800 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
7801 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
7802 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
7803 | return FALSE; | |
7804 | ||
7805 | if (htab->tlsdesc_plt | |
7806 | && (!add_dynamic_entry (DT_TLSDESC_PLT, 0) | |
7807 | || !add_dynamic_entry (DT_TLSDESC_GOT, 0))) | |
7808 | return FALSE; | |
7809 | } | |
7810 | ||
7811 | if (relocs) | |
7812 | { | |
7813 | if (!add_dynamic_entry (DT_RELA, 0) | |
7814 | || !add_dynamic_entry (DT_RELASZ, 0) | |
7815 | || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) | |
7816 | return FALSE; | |
7817 | ||
7818 | /* If any dynamic relocs apply to a read-only section, | |
7819 | then we need a DT_TEXTREL entry. */ | |
7820 | if ((info->flags & DF_TEXTREL) != 0) | |
7821 | { | |
7822 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
7823 | return FALSE; | |
7824 | } | |
7825 | } | |
7826 | } | |
7827 | #undef add_dynamic_entry | |
7828 | ||
7829 | return TRUE; | |
a06ea964 NC |
7830 | } |
7831 | ||
7832 | static inline void | |
caed7120 YZ |
7833 | elf_aarch64_update_plt_entry (bfd *output_bfd, |
7834 | bfd_reloc_code_real_type r_type, | |
7835 | bfd_byte *plt_entry, bfd_vma value) | |
a06ea964 | 7836 | { |
caed7120 YZ |
7837 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type); |
7838 | ||
7839 | _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value); | |
a06ea964 NC |
7840 | } |
7841 | ||
7842 | static void | |
cec5225b YZ |
7843 | elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h, |
7844 | struct elf_aarch64_link_hash_table | |
1419bbe5 WN |
7845 | *htab, bfd *output_bfd, |
7846 | struct bfd_link_info *info) | |
a06ea964 NC |
7847 | { |
7848 | bfd_byte *plt_entry; | |
7849 | bfd_vma plt_index; | |
7850 | bfd_vma got_offset; | |
7851 | bfd_vma gotplt_entry_address; | |
7852 | bfd_vma plt_entry_address; | |
7853 | Elf_Internal_Rela rela; | |
7854 | bfd_byte *loc; | |
1419bbe5 WN |
7855 | asection *plt, *gotplt, *relplt; |
7856 | ||
7857 | /* When building a static executable, use .iplt, .igot.plt and | |
7858 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
7859 | if (htab->root.splt != NULL) | |
7860 | { | |
7861 | plt = htab->root.splt; | |
7862 | gotplt = htab->root.sgotplt; | |
7863 | relplt = htab->root.srelplt; | |
7864 | } | |
7865 | else | |
7866 | { | |
7867 | plt = htab->root.iplt; | |
7868 | gotplt = htab->root.igotplt; | |
7869 | relplt = htab->root.irelplt; | |
7870 | } | |
7871 | ||
7872 | /* Get the index in the procedure linkage table which | |
7873 | corresponds to this symbol. This is the index of this symbol | |
7874 | in all the symbols for which we are making plt entries. The | |
7875 | first entry in the procedure linkage table is reserved. | |
a06ea964 | 7876 | |
1419bbe5 WN |
7877 | Get the offset into the .got table of the entry that |
7878 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE | |
7879 | bytes. The first three are reserved for the dynamic linker. | |
692e2b8b | 7880 | |
1419bbe5 WN |
7881 | For static executables, we don't reserve anything. */ |
7882 | ||
7883 | if (plt == htab->root.splt) | |
7884 | { | |
7885 | plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size; | |
7886 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
7887 | } | |
7888 | else | |
7889 | { | |
7890 | plt_index = h->plt.offset / htab->plt_entry_size; | |
7891 | got_offset = plt_index * GOT_ENTRY_SIZE; | |
7892 | } | |
7893 | ||
7894 | plt_entry = plt->contents + h->plt.offset; | |
7895 | plt_entry_address = plt->output_section->vma | |
f44a1f8e | 7896 | + plt->output_offset + h->plt.offset; |
1419bbe5 WN |
7897 | gotplt_entry_address = gotplt->output_section->vma + |
7898 | gotplt->output_offset + got_offset; | |
a06ea964 NC |
7899 | |
7900 | /* Copy in the boiler-plate for the PLTn entry. */ | |
cec5225b | 7901 | memcpy (plt_entry, elfNN_aarch64_small_plt_entry, PLT_SMALL_ENTRY_SIZE); |
a06ea964 NC |
7902 | |
7903 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
7904 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 YZ |
7905 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
7906 | plt_entry, | |
7907 | PG (gotplt_entry_address) - | |
7908 | PG (plt_entry_address)); | |
a06ea964 NC |
7909 | |
7910 | /* Fill in the lo12 bits for the load from the pltgot. */ | |
caed7120 YZ |
7911 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
7912 | plt_entry + 4, | |
7913 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 | 7914 | |
9aff4b7a | 7915 | /* Fill in the lo12 bits for the add from the pltgot entry. */ |
caed7120 YZ |
7916 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
7917 | plt_entry + 8, | |
7918 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 NC |
7919 | |
7920 | /* All the GOTPLT Entries are essentially initialized to PLT0. */ | |
cec5225b | 7921 | bfd_put_NN (output_bfd, |
1419bbe5 WN |
7922 | plt->output_section->vma + plt->output_offset, |
7923 | gotplt->contents + got_offset); | |
a06ea964 | 7924 | |
a06ea964 | 7925 | rela.r_offset = gotplt_entry_address; |
1419bbe5 WN |
7926 | |
7927 | if (h->dynindx == -1 | |
7928 | || ((info->executable | |
7929 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
7930 | && h->def_regular | |
7931 | && h->type == STT_GNU_IFUNC)) | |
7932 | { | |
7933 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
7934 | R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */ | |
7935 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
7936 | rela.r_addend = (h->root.u.def.value | |
7937 | + h->root.u.def.section->output_section->vma | |
7938 | + h->root.u.def.section->output_offset); | |
7939 | } | |
7940 | else | |
7941 | { | |
7942 | /* Fill in the entry in the .rela.plt section. */ | |
7943 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT)); | |
7944 | rela.r_addend = 0; | |
7945 | } | |
a06ea964 NC |
7946 | |
7947 | /* Compute the relocation entry to used based on PLT index and do | |
7948 | not adjust reloc_count. The reloc_count has already been adjusted | |
7949 | to account for this entry. */ | |
1419bbe5 | 7950 | loc = relplt->contents + plt_index * RELOC_SIZE (htab); |
cec5225b | 7951 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
7952 | } |
7953 | ||
7954 | /* Size sections even though they're not dynamic. We use it to setup | |
7955 | _TLS_MODULE_BASE_, if needed. */ | |
7956 | ||
7957 | static bfd_boolean | |
cec5225b | 7958 | elfNN_aarch64_always_size_sections (bfd *output_bfd, |
a06ea964 NC |
7959 | struct bfd_link_info *info) |
7960 | { | |
7961 | asection *tls_sec; | |
7962 | ||
7963 | if (info->relocatable) | |
7964 | return TRUE; | |
7965 | ||
7966 | tls_sec = elf_hash_table (info)->tls_sec; | |
7967 | ||
7968 | if (tls_sec) | |
7969 | { | |
7970 | struct elf_link_hash_entry *tlsbase; | |
7971 | ||
7972 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
7973 | "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE); | |
7974 | ||
7975 | if (tlsbase) | |
7976 | { | |
7977 | struct bfd_link_hash_entry *h = NULL; | |
7978 | const struct elf_backend_data *bed = | |
7979 | get_elf_backend_data (output_bfd); | |
7980 | ||
7981 | if (!(_bfd_generic_link_add_one_symbol | |
7982 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
7983 | tls_sec, 0, NULL, FALSE, bed->collect, &h))) | |
7984 | return FALSE; | |
7985 | ||
7986 | tlsbase->type = STT_TLS; | |
7987 | tlsbase = (struct elf_link_hash_entry *) h; | |
7988 | tlsbase->def_regular = 1; | |
7989 | tlsbase->other = STV_HIDDEN; | |
7990 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
7991 | } | |
7992 | } | |
7993 | ||
7994 | return TRUE; | |
7995 | } | |
7996 | ||
7997 | /* Finish up dynamic symbol handling. We set the contents of various | |
7998 | dynamic sections here. */ | |
7999 | static bfd_boolean | |
cec5225b | 8000 | elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd, |
a06ea964 NC |
8001 | struct bfd_link_info *info, |
8002 | struct elf_link_hash_entry *h, | |
8003 | Elf_Internal_Sym *sym) | |
8004 | { | |
cec5225b YZ |
8005 | struct elf_aarch64_link_hash_table *htab; |
8006 | htab = elf_aarch64_hash_table (info); | |
a06ea964 NC |
8007 | |
8008 | if (h->plt.offset != (bfd_vma) - 1) | |
8009 | { | |
1419bbe5 WN |
8010 | asection *plt, *gotplt, *relplt; |
8011 | ||
a06ea964 NC |
8012 | /* This symbol has an entry in the procedure linkage table. Set |
8013 | it up. */ | |
8014 | ||
1419bbe5 WN |
8015 | /* When building a static executable, use .iplt, .igot.plt and |
8016 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
8017 | if (htab->root.splt != NULL) | |
8018 | { | |
8019 | plt = htab->root.splt; | |
8020 | gotplt = htab->root.sgotplt; | |
8021 | relplt = htab->root.srelplt; | |
8022 | } | |
8023 | else | |
8024 | { | |
8025 | plt = htab->root.iplt; | |
8026 | gotplt = htab->root.igotplt; | |
8027 | relplt = htab->root.irelplt; | |
8028 | } | |
8029 | ||
8030 | /* This symbol has an entry in the procedure linkage table. Set | |
8031 | it up. */ | |
8032 | if ((h->dynindx == -1 | |
8033 | && !((h->forced_local || info->executable) | |
8034 | && h->def_regular | |
8035 | && h->type == STT_GNU_IFUNC)) | |
8036 | || plt == NULL | |
8037 | || gotplt == NULL | |
8038 | || relplt == NULL) | |
a06ea964 NC |
8039 | abort (); |
8040 | ||
1419bbe5 | 8041 | elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info); |
a06ea964 NC |
8042 | if (!h->def_regular) |
8043 | { | |
8044 | /* Mark the symbol as undefined, rather than as defined in | |
46b87d49 | 8045 | the .plt section. */ |
a06ea964 | 8046 | sym->st_shndx = SHN_UNDEF; |
46b87d49 WN |
8047 | /* If the symbol is weak we need to clear the value. |
8048 | Otherwise, the PLT entry would provide a definition for | |
8049 | the symbol even if the symbol wasn't defined anywhere, | |
8050 | and so the symbol would never be NULL. Leave the value if | |
8051 | there were any relocations where pointer equality matters | |
8052 | (this is a clue for the dynamic linker, to make function | |
8053 | pointer comparisons work between an application and shared | |
8054 | library). */ | |
8055 | if (!h->ref_regular_nonweak || !h->pointer_equality_needed) | |
8056 | sym->st_value = 0; | |
a06ea964 NC |
8057 | } |
8058 | } | |
8059 | ||
8060 | if (h->got.offset != (bfd_vma) - 1 | |
cec5225b | 8061 | && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL) |
a06ea964 NC |
8062 | { |
8063 | Elf_Internal_Rela rela; | |
8064 | bfd_byte *loc; | |
8065 | ||
8066 | /* This symbol has an entry in the global offset table. Set it | |
8067 | up. */ | |
8068 | if (htab->root.sgot == NULL || htab->root.srelgot == NULL) | |
8069 | abort (); | |
8070 | ||
8071 | rela.r_offset = (htab->root.sgot->output_section->vma | |
8072 | + htab->root.sgot->output_offset | |
8073 | + (h->got.offset & ~(bfd_vma) 1)); | |
8074 | ||
49206388 WN |
8075 | if (h->def_regular |
8076 | && h->type == STT_GNU_IFUNC) | |
8077 | { | |
8078 | if (info->shared) | |
8079 | { | |
8080 | /* Generate R_AARCH64_GLOB_DAT. */ | |
8081 | goto do_glob_dat; | |
8082 | } | |
8083 | else | |
8084 | { | |
8085 | asection *plt; | |
8086 | ||
8087 | if (!h->pointer_equality_needed) | |
8088 | abort (); | |
8089 | ||
8090 | /* For non-shared object, we can't use .got.plt, which | |
8091 | contains the real function address if we need pointer | |
8092 | equality. We load the GOT entry with the PLT entry. */ | |
8093 | plt = htab->root.splt ? htab->root.splt : htab->root.iplt; | |
8094 | bfd_put_NN (output_bfd, (plt->output_section->vma | |
8095 | + plt->output_offset | |
8096 | + h->plt.offset), | |
8097 | htab->root.sgot->contents | |
8098 | + (h->got.offset & ~(bfd_vma) 1)); | |
8099 | return TRUE; | |
8100 | } | |
8101 | } | |
8102 | else if (info->shared && SYMBOL_REFERENCES_LOCAL (info, h)) | |
a06ea964 NC |
8103 | { |
8104 | if (!h->def_regular) | |
8105 | return FALSE; | |
8106 | ||
8107 | BFD_ASSERT ((h->got.offset & 1) != 0); | |
a6bb11b2 | 8108 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); |
a06ea964 NC |
8109 | rela.r_addend = (h->root.u.def.value |
8110 | + h->root.u.def.section->output_section->vma | |
8111 | + h->root.u.def.section->output_offset); | |
8112 | } | |
8113 | else | |
8114 | { | |
49206388 | 8115 | do_glob_dat: |
a06ea964 | 8116 | BFD_ASSERT ((h->got.offset & 1) == 0); |
cec5225b | 8117 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 | 8118 | htab->root.sgot->contents + h->got.offset); |
a6bb11b2 | 8119 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT)); |
a06ea964 NC |
8120 | rela.r_addend = 0; |
8121 | } | |
8122 | ||
8123 | loc = htab->root.srelgot->contents; | |
8124 | loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 8125 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
8126 | } |
8127 | ||
8128 | if (h->needs_copy) | |
8129 | { | |
8130 | Elf_Internal_Rela rela; | |
8131 | bfd_byte *loc; | |
8132 | ||
8133 | /* This symbol needs a copy reloc. Set it up. */ | |
8134 | ||
8135 | if (h->dynindx == -1 | |
8136 | || (h->root.type != bfd_link_hash_defined | |
8137 | && h->root.type != bfd_link_hash_defweak) | |
8138 | || htab->srelbss == NULL) | |
8139 | abort (); | |
8140 | ||
8141 | rela.r_offset = (h->root.u.def.value | |
8142 | + h->root.u.def.section->output_section->vma | |
8143 | + h->root.u.def.section->output_offset); | |
a6bb11b2 | 8144 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY)); |
a06ea964 NC |
8145 | rela.r_addend = 0; |
8146 | loc = htab->srelbss->contents; | |
8147 | loc += htab->srelbss->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 8148 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
8149 | } |
8150 | ||
8151 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may | |
8152 | be NULL for local symbols. */ | |
8153 | if (sym != NULL | |
9637f6ef | 8154 | && (h == elf_hash_table (info)->hdynamic |
a06ea964 NC |
8155 | || h == elf_hash_table (info)->hgot)) |
8156 | sym->st_shndx = SHN_ABS; | |
8157 | ||
8158 | return TRUE; | |
8159 | } | |
8160 | ||
1419bbe5 WN |
8161 | /* Finish up local dynamic symbol handling. We set the contents of |
8162 | various dynamic sections here. */ | |
8163 | ||
8164 | static bfd_boolean | |
8165 | elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf) | |
8166 | { | |
8167 | struct elf_link_hash_entry *h | |
8168 | = (struct elf_link_hash_entry *) *slot; | |
8169 | struct bfd_link_info *info | |
8170 | = (struct bfd_link_info *) inf; | |
8171 | ||
8172 | return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd, | |
8173 | info, h, NULL); | |
8174 | } | |
8175 | ||
a06ea964 | 8176 | static void |
cec5225b YZ |
8177 | elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED, |
8178 | struct elf_aarch64_link_hash_table | |
a06ea964 NC |
8179 | *htab) |
8180 | { | |
8181 | /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between | |
8182 | small and large plts and at the minute just generates | |
8183 | the small PLT. */ | |
8184 | ||
cec5225b | 8185 | /* PLT0 of the small PLT looks like this in ELF64 - |
a06ea964 NC |
8186 | stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack. |
8187 | adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT | |
8188 | ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the | |
8189 | // symbol resolver | |
8190 | add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the | |
8191 | // GOTPLT entry for this. | |
8192 | br x17 | |
cec5225b YZ |
8193 | PLT0 will be slightly different in ELF32 due to different got entry |
8194 | size. | |
a06ea964 | 8195 | */ |
caed7120 | 8196 | bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */ |
a06ea964 NC |
8197 | bfd_vma plt_base; |
8198 | ||
8199 | ||
cec5225b | 8200 | memcpy (htab->root.splt->contents, elfNN_aarch64_small_plt0_entry, |
a06ea964 NC |
8201 | PLT_ENTRY_SIZE); |
8202 | elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize = | |
8203 | PLT_ENTRY_SIZE; | |
8204 | ||
caed7120 YZ |
8205 | plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma |
8206 | + htab->root.sgotplt->output_offset | |
8207 | + GOT_ENTRY_SIZE * 2); | |
a06ea964 NC |
8208 | |
8209 | plt_base = htab->root.splt->output_section->vma + | |
f44a1f8e | 8210 | htab->root.splt->output_offset; |
a06ea964 NC |
8211 | |
8212 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
8213 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 YZ |
8214 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
8215 | htab->root.splt->contents + 4, | |
8216 | PG (plt_got_2nd_ent) - PG (plt_base + 4)); | |
a06ea964 | 8217 | |
caed7120 YZ |
8218 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
8219 | htab->root.splt->contents + 8, | |
8220 | PG_OFFSET (plt_got_2nd_ent)); | |
a06ea964 | 8221 | |
caed7120 YZ |
8222 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
8223 | htab->root.splt->contents + 12, | |
8224 | PG_OFFSET (plt_got_2nd_ent)); | |
a06ea964 NC |
8225 | } |
8226 | ||
8227 | static bfd_boolean | |
cec5225b | 8228 | elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd, |
a06ea964 NC |
8229 | struct bfd_link_info *info) |
8230 | { | |
cec5225b | 8231 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
8232 | bfd *dynobj; |
8233 | asection *sdyn; | |
8234 | ||
cec5225b | 8235 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
8236 | dynobj = htab->root.dynobj; |
8237 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); | |
8238 | ||
8239 | if (htab->root.dynamic_sections_created) | |
8240 | { | |
cec5225b | 8241 | ElfNN_External_Dyn *dyncon, *dynconend; |
a06ea964 NC |
8242 | |
8243 | if (sdyn == NULL || htab->root.sgot == NULL) | |
8244 | abort (); | |
8245 | ||
cec5225b YZ |
8246 | dyncon = (ElfNN_External_Dyn *) sdyn->contents; |
8247 | dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size); | |
a06ea964 NC |
8248 | for (; dyncon < dynconend; dyncon++) |
8249 | { | |
8250 | Elf_Internal_Dyn dyn; | |
8251 | asection *s; | |
8252 | ||
cec5225b | 8253 | bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn); |
a06ea964 NC |
8254 | |
8255 | switch (dyn.d_tag) | |
8256 | { | |
8257 | default: | |
8258 | continue; | |
8259 | ||
8260 | case DT_PLTGOT: | |
8261 | s = htab->root.sgotplt; | |
8262 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
8263 | break; | |
8264 | ||
8265 | case DT_JMPREL: | |
8266 | dyn.d_un.d_ptr = htab->root.srelplt->output_section->vma; | |
8267 | break; | |
8268 | ||
8269 | case DT_PLTRELSZ: | |
c955de36 | 8270 | s = htab->root.srelplt; |
a06ea964 NC |
8271 | dyn.d_un.d_val = s->size; |
8272 | break; | |
8273 | ||
8274 | case DT_RELASZ: | |
8275 | /* The procedure linkage table relocs (DT_JMPREL) should | |
8276 | not be included in the overall relocs (DT_RELA). | |
8277 | Therefore, we override the DT_RELASZ entry here to | |
8278 | make it not include the JMPREL relocs. Since the | |
8279 | linker script arranges for .rela.plt to follow all | |
8280 | other relocation sections, we don't have to worry | |
8281 | about changing the DT_RELA entry. */ | |
8282 | if (htab->root.srelplt != NULL) | |
8283 | { | |
c955de36 | 8284 | s = htab->root.srelplt; |
a06ea964 NC |
8285 | dyn.d_un.d_val -= s->size; |
8286 | } | |
8287 | break; | |
8288 | ||
8289 | case DT_TLSDESC_PLT: | |
8290 | s = htab->root.splt; | |
8291 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
8292 | + htab->tlsdesc_plt; | |
8293 | break; | |
8294 | ||
8295 | case DT_TLSDESC_GOT: | |
8296 | s = htab->root.sgot; | |
8297 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
8298 | + htab->dt_tlsdesc_got; | |
8299 | break; | |
8300 | } | |
8301 | ||
cec5225b | 8302 | bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon); |
a06ea964 NC |
8303 | } |
8304 | ||
8305 | } | |
8306 | ||
8307 | /* Fill in the special first entry in the procedure linkage table. */ | |
8308 | if (htab->root.splt && htab->root.splt->size > 0) | |
8309 | { | |
cec5225b | 8310 | elfNN_aarch64_init_small_plt0_entry (output_bfd, htab); |
a06ea964 NC |
8311 | |
8312 | elf_section_data (htab->root.splt->output_section)-> | |
8313 | this_hdr.sh_entsize = htab->plt_entry_size; | |
8314 | ||
8315 | ||
8316 | if (htab->tlsdesc_plt) | |
8317 | { | |
cec5225b | 8318 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
8319 | htab->root.sgot->contents + htab->dt_tlsdesc_got); |
8320 | ||
8321 | memcpy (htab->root.splt->contents + htab->tlsdesc_plt, | |
cec5225b YZ |
8322 | elfNN_aarch64_tlsdesc_small_plt_entry, |
8323 | sizeof (elfNN_aarch64_tlsdesc_small_plt_entry)); | |
a06ea964 NC |
8324 | |
8325 | { | |
8326 | bfd_vma adrp1_addr = | |
8327 | htab->root.splt->output_section->vma | |
8328 | + htab->root.splt->output_offset + htab->tlsdesc_plt + 4; | |
8329 | ||
caed7120 | 8330 | bfd_vma adrp2_addr = adrp1_addr + 4; |
a06ea964 NC |
8331 | |
8332 | bfd_vma got_addr = | |
8333 | htab->root.sgot->output_section->vma | |
8334 | + htab->root.sgot->output_offset; | |
8335 | ||
8336 | bfd_vma pltgot_addr = | |
8337 | htab->root.sgotplt->output_section->vma | |
8338 | + htab->root.sgotplt->output_offset; | |
8339 | ||
8340 | bfd_vma dt_tlsdesc_got = got_addr + htab->dt_tlsdesc_got; | |
caed7120 YZ |
8341 | |
8342 | bfd_byte *plt_entry = | |
8343 | htab->root.splt->contents + htab->tlsdesc_plt; | |
a06ea964 NC |
8344 | |
8345 | /* adrp x2, DT_TLSDESC_GOT */ | |
caed7120 YZ |
8346 | elf_aarch64_update_plt_entry (output_bfd, |
8347 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
8348 | plt_entry + 4, | |
8349 | (PG (dt_tlsdesc_got) | |
8350 | - PG (adrp1_addr))); | |
a06ea964 NC |
8351 | |
8352 | /* adrp x3, 0 */ | |
caed7120 YZ |
8353 | elf_aarch64_update_plt_entry (output_bfd, |
8354 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
8355 | plt_entry + 8, | |
8356 | (PG (pltgot_addr) | |
8357 | - PG (adrp2_addr))); | |
a06ea964 NC |
8358 | |
8359 | /* ldr x2, [x2, #0] */ | |
caed7120 YZ |
8360 | elf_aarch64_update_plt_entry (output_bfd, |
8361 | BFD_RELOC_AARCH64_LDSTNN_LO12, | |
8362 | plt_entry + 12, | |
8363 | PG_OFFSET (dt_tlsdesc_got)); | |
a06ea964 NC |
8364 | |
8365 | /* add x3, x3, 0 */ | |
caed7120 YZ |
8366 | elf_aarch64_update_plt_entry (output_bfd, |
8367 | BFD_RELOC_AARCH64_ADD_LO12, | |
8368 | plt_entry + 16, | |
8369 | PG_OFFSET (pltgot_addr)); | |
a06ea964 NC |
8370 | } |
8371 | } | |
8372 | } | |
8373 | ||
8374 | if (htab->root.sgotplt) | |
8375 | { | |
8376 | if (bfd_is_abs_section (htab->root.sgotplt->output_section)) | |
8377 | { | |
8378 | (*_bfd_error_handler) | |
8379 | (_("discarded output section: `%A'"), htab->root.sgotplt); | |
8380 | return FALSE; | |
8381 | } | |
8382 | ||
8383 | /* Fill in the first three entries in the global offset table. */ | |
8384 | if (htab->root.sgotplt->size > 0) | |
8385 | { | |
8db339a6 MS |
8386 | bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents); |
8387 | ||
a06ea964 | 8388 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ |
cec5225b | 8389 | bfd_put_NN (output_bfd, |
a06ea964 NC |
8390 | (bfd_vma) 0, |
8391 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE); | |
cec5225b | 8392 | bfd_put_NN (output_bfd, |
a06ea964 NC |
8393 | (bfd_vma) 0, |
8394 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2); | |
8395 | } | |
8396 | ||
8db339a6 MS |
8397 | if (htab->root.sgot) |
8398 | { | |
8399 | if (htab->root.sgot->size > 0) | |
8400 | { | |
8401 | bfd_vma addr = | |
8402 | sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0; | |
8403 | bfd_put_NN (output_bfd, addr, htab->root.sgot->contents); | |
8404 | } | |
8405 | } | |
8406 | ||
a06ea964 NC |
8407 | elf_section_data (htab->root.sgotplt->output_section)-> |
8408 | this_hdr.sh_entsize = GOT_ENTRY_SIZE; | |
8409 | } | |
8410 | ||
8411 | if (htab->root.sgot && htab->root.sgot->size > 0) | |
8412 | elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize | |
8413 | = GOT_ENTRY_SIZE; | |
8414 | ||
1419bbe5 WN |
8415 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
8416 | htab_traverse (htab->loc_hash_table, | |
8417 | elfNN_aarch64_finish_local_dynamic_symbol, | |
8418 | info); | |
8419 | ||
a06ea964 NC |
8420 | return TRUE; |
8421 | } | |
8422 | ||
8423 | /* Return address for Ith PLT stub in section PLT, for relocation REL | |
8424 | or (bfd_vma) -1 if it should not be included. */ | |
8425 | ||
8426 | static bfd_vma | |
cec5225b | 8427 | elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt, |
a06ea964 NC |
8428 | const arelent *rel ATTRIBUTE_UNUSED) |
8429 | { | |
8430 | return plt->vma + PLT_ENTRY_SIZE + i * PLT_SMALL_ENTRY_SIZE; | |
8431 | } | |
8432 | ||
8433 | ||
8434 | /* We use this so we can override certain functions | |
8435 | (though currently we don't). */ | |
8436 | ||
cec5225b | 8437 | const struct elf_size_info elfNN_aarch64_size_info = |
a06ea964 | 8438 | { |
cec5225b YZ |
8439 | sizeof (ElfNN_External_Ehdr), |
8440 | sizeof (ElfNN_External_Phdr), | |
8441 | sizeof (ElfNN_External_Shdr), | |
8442 | sizeof (ElfNN_External_Rel), | |
8443 | sizeof (ElfNN_External_Rela), | |
8444 | sizeof (ElfNN_External_Sym), | |
8445 | sizeof (ElfNN_External_Dyn), | |
a06ea964 NC |
8446 | sizeof (Elf_External_Note), |
8447 | 4, /* Hash table entry size. */ | |
8448 | 1, /* Internal relocs per external relocs. */ | |
cec5225b YZ |
8449 | ARCH_SIZE, /* Arch size. */ |
8450 | LOG_FILE_ALIGN, /* Log_file_align. */ | |
8451 | ELFCLASSNN, EV_CURRENT, | |
8452 | bfd_elfNN_write_out_phdrs, | |
8453 | bfd_elfNN_write_shdrs_and_ehdr, | |
8454 | bfd_elfNN_checksum_contents, | |
8455 | bfd_elfNN_write_relocs, | |
8456 | bfd_elfNN_swap_symbol_in, | |
8457 | bfd_elfNN_swap_symbol_out, | |
8458 | bfd_elfNN_slurp_reloc_table, | |
8459 | bfd_elfNN_slurp_symbol_table, | |
8460 | bfd_elfNN_swap_dyn_in, | |
8461 | bfd_elfNN_swap_dyn_out, | |
8462 | bfd_elfNN_swap_reloc_in, | |
8463 | bfd_elfNN_swap_reloc_out, | |
8464 | bfd_elfNN_swap_reloca_in, | |
8465 | bfd_elfNN_swap_reloca_out | |
a06ea964 NC |
8466 | }; |
8467 | ||
8468 | #define ELF_ARCH bfd_arch_aarch64 | |
8469 | #define ELF_MACHINE_CODE EM_AARCH64 | |
8470 | #define ELF_MAXPAGESIZE 0x10000 | |
8471 | #define ELF_MINPAGESIZE 0x1000 | |
8472 | #define ELF_COMMONPAGESIZE 0x1000 | |
8473 | ||
cec5225b YZ |
8474 | #define bfd_elfNN_close_and_cleanup \ |
8475 | elfNN_aarch64_close_and_cleanup | |
a06ea964 | 8476 | |
cec5225b YZ |
8477 | #define bfd_elfNN_bfd_free_cached_info \ |
8478 | elfNN_aarch64_bfd_free_cached_info | |
a06ea964 | 8479 | |
cec5225b YZ |
8480 | #define bfd_elfNN_bfd_is_target_special_symbol \ |
8481 | elfNN_aarch64_is_target_special_symbol | |
a06ea964 | 8482 | |
cec5225b YZ |
8483 | #define bfd_elfNN_bfd_link_hash_table_create \ |
8484 | elfNN_aarch64_link_hash_table_create | |
a06ea964 | 8485 | |
cec5225b YZ |
8486 | #define bfd_elfNN_bfd_merge_private_bfd_data \ |
8487 | elfNN_aarch64_merge_private_bfd_data | |
a06ea964 | 8488 | |
cec5225b YZ |
8489 | #define bfd_elfNN_bfd_print_private_bfd_data \ |
8490 | elfNN_aarch64_print_private_bfd_data | |
a06ea964 | 8491 | |
cec5225b YZ |
8492 | #define bfd_elfNN_bfd_reloc_type_lookup \ |
8493 | elfNN_aarch64_reloc_type_lookup | |
a06ea964 | 8494 | |
cec5225b YZ |
8495 | #define bfd_elfNN_bfd_reloc_name_lookup \ |
8496 | elfNN_aarch64_reloc_name_lookup | |
a06ea964 | 8497 | |
cec5225b YZ |
8498 | #define bfd_elfNN_bfd_set_private_flags \ |
8499 | elfNN_aarch64_set_private_flags | |
a06ea964 | 8500 | |
cec5225b YZ |
8501 | #define bfd_elfNN_find_inliner_info \ |
8502 | elfNN_aarch64_find_inliner_info | |
a06ea964 | 8503 | |
cec5225b YZ |
8504 | #define bfd_elfNN_find_nearest_line \ |
8505 | elfNN_aarch64_find_nearest_line | |
a06ea964 | 8506 | |
cec5225b YZ |
8507 | #define bfd_elfNN_mkobject \ |
8508 | elfNN_aarch64_mkobject | |
a06ea964 | 8509 | |
cec5225b YZ |
8510 | #define bfd_elfNN_new_section_hook \ |
8511 | elfNN_aarch64_new_section_hook | |
a06ea964 NC |
8512 | |
8513 | #define elf_backend_adjust_dynamic_symbol \ | |
cec5225b | 8514 | elfNN_aarch64_adjust_dynamic_symbol |
a06ea964 NC |
8515 | |
8516 | #define elf_backend_always_size_sections \ | |
cec5225b | 8517 | elfNN_aarch64_always_size_sections |
a06ea964 NC |
8518 | |
8519 | #define elf_backend_check_relocs \ | |
cec5225b | 8520 | elfNN_aarch64_check_relocs |
a06ea964 NC |
8521 | |
8522 | #define elf_backend_copy_indirect_symbol \ | |
cec5225b | 8523 | elfNN_aarch64_copy_indirect_symbol |
a06ea964 NC |
8524 | |
8525 | /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts | |
8526 | to them in our hash. */ | |
8527 | #define elf_backend_create_dynamic_sections \ | |
cec5225b | 8528 | elfNN_aarch64_create_dynamic_sections |
a06ea964 NC |
8529 | |
8530 | #define elf_backend_init_index_section \ | |
8531 | _bfd_elf_init_2_index_sections | |
8532 | ||
a06ea964 | 8533 | #define elf_backend_finish_dynamic_sections \ |
cec5225b | 8534 | elfNN_aarch64_finish_dynamic_sections |
a06ea964 NC |
8535 | |
8536 | #define elf_backend_finish_dynamic_symbol \ | |
cec5225b | 8537 | elfNN_aarch64_finish_dynamic_symbol |
a06ea964 NC |
8538 | |
8539 | #define elf_backend_gc_sweep_hook \ | |
cec5225b | 8540 | elfNN_aarch64_gc_sweep_hook |
a06ea964 NC |
8541 | |
8542 | #define elf_backend_object_p \ | |
cec5225b | 8543 | elfNN_aarch64_object_p |
a06ea964 NC |
8544 | |
8545 | #define elf_backend_output_arch_local_syms \ | |
cec5225b | 8546 | elfNN_aarch64_output_arch_local_syms |
a06ea964 NC |
8547 | |
8548 | #define elf_backend_plt_sym_val \ | |
cec5225b | 8549 | elfNN_aarch64_plt_sym_val |
a06ea964 NC |
8550 | |
8551 | #define elf_backend_post_process_headers \ | |
cec5225b | 8552 | elfNN_aarch64_post_process_headers |
a06ea964 NC |
8553 | |
8554 | #define elf_backend_relocate_section \ | |
cec5225b | 8555 | elfNN_aarch64_relocate_section |
a06ea964 NC |
8556 | |
8557 | #define elf_backend_reloc_type_class \ | |
cec5225b | 8558 | elfNN_aarch64_reloc_type_class |
a06ea964 | 8559 | |
a06ea964 | 8560 | #define elf_backend_section_from_shdr \ |
cec5225b | 8561 | elfNN_aarch64_section_from_shdr |
a06ea964 NC |
8562 | |
8563 | #define elf_backend_size_dynamic_sections \ | |
cec5225b | 8564 | elfNN_aarch64_size_dynamic_sections |
a06ea964 NC |
8565 | |
8566 | #define elf_backend_size_info \ | |
cec5225b | 8567 | elfNN_aarch64_size_info |
a06ea964 | 8568 | |
68fcca92 JW |
8569 | #define elf_backend_write_section \ |
8570 | elfNN_aarch64_write_section | |
8571 | ||
a06ea964 | 8572 | #define elf_backend_can_refcount 1 |
59c108f7 | 8573 | #define elf_backend_can_gc_sections 1 |
a06ea964 NC |
8574 | #define elf_backend_plt_readonly 1 |
8575 | #define elf_backend_want_got_plt 1 | |
8576 | #define elf_backend_want_plt_sym 0 | |
8577 | #define elf_backend_may_use_rel_p 0 | |
8578 | #define elf_backend_may_use_rela_p 1 | |
8579 | #define elf_backend_default_use_rela_p 1 | |
2e0488d3 | 8580 | #define elf_backend_rela_normal 1 |
a06ea964 | 8581 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3) |
c495064d | 8582 | #define elf_backend_default_execstack 0 |
a06ea964 NC |
8583 | |
8584 | #undef elf_backend_obj_attrs_section | |
8585 | #define elf_backend_obj_attrs_section ".ARM.attributes" | |
8586 | ||
cec5225b | 8587 | #include "elfNN-target.h" |