Commit | Line | Data |
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cec5225b YZ |
1 | /* AArch64-specific support for NN-bit ELF. |
2 | Copyright 2009-2013 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" | |
145 | #include "elf/aarch64.h" | |
caed7120 | 146 | #include "elfxx-aarch64.h" |
a06ea964 | 147 | |
cec5225b YZ |
148 | #define ARCH_SIZE NN |
149 | ||
150 | #if ARCH_SIZE == 64 | |
151 | #define AARCH64_R(NAME) R_AARCH64_ ## NAME | |
152 | #define AARCH64_R_STR(NAME) "R_AARCH64_" #NAME | |
a6bb11b2 YZ |
153 | #define HOWTO64(...) HOWTO (__VA_ARGS__) |
154 | #define HOWTO32(...) EMPTY_HOWTO (0) | |
cec5225b YZ |
155 | #define LOG_FILE_ALIGN 3 |
156 | #endif | |
157 | ||
158 | #if ARCH_SIZE == 32 | |
159 | #define AARCH64_R(NAME) R_AARCH64_P32_ ## NAME | |
160 | #define AARCH64_R_STR(NAME) "R_AARCH64_P32_" #NAME | |
a6bb11b2 YZ |
161 | #define HOWTO64(...) EMPTY_HOWTO (0) |
162 | #define HOWTO32(...) HOWTO (__VA_ARGS__) | |
cec5225b YZ |
163 | #define LOG_FILE_ALIGN 2 |
164 | #endif | |
165 | ||
a6bb11b2 YZ |
166 | #define IS_AARCH64_TLS_RELOC(R_TYPE) \ |
167 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \ | |
168 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \ | |
169 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1 \ | |
170 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC \ | |
171 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \ | |
172 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC \ | |
173 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC \ | |
174 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \ | |
175 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12 \ | |
176 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 \ | |
177 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC \ | |
178 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 \ | |
179 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 \ | |
180 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC \ | |
181 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0 \ | |
182 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC \ | |
183 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPMOD \ | |
184 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPREL \ | |
185 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_TPREL \ | |
a06ea964 NC |
186 | || IS_AARCH64_TLSDESC_RELOC ((R_TYPE))) |
187 | ||
a6bb11b2 YZ |
188 | #define IS_AARCH64_TLSDESC_RELOC(R_TYPE) \ |
189 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \ | |
190 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \ | |
191 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \ | |
192 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC \ | |
193 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC \ | |
194 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC \ | |
195 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1 \ | |
196 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \ | |
197 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \ | |
198 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \ | |
199 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \ | |
200 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC) | |
a06ea964 NC |
201 | |
202 | #define ELIMINATE_COPY_RELOCS 0 | |
203 | ||
a06ea964 | 204 | /* Return size of a relocation entry. HTAB is the bfd's |
cec5225b YZ |
205 | elf_aarch64_link_hash_entry. */ |
206 | #define RELOC_SIZE(HTAB) (sizeof (ElfNN_External_Rela)) | |
a06ea964 | 207 | |
cec5225b YZ |
208 | /* GOT Entry size - 8 bytes in ELF64 and 4 bytes in ELF32. */ |
209 | #define GOT_ENTRY_SIZE (ARCH_SIZE / 8) | |
a06ea964 NC |
210 | #define PLT_ENTRY_SIZE (32) |
211 | #define PLT_SMALL_ENTRY_SIZE (16) | |
212 | #define PLT_TLSDESC_ENTRY_SIZE (32) | |
213 | ||
a06ea964 NC |
214 | /* Encoding of the nop instruction */ |
215 | #define INSN_NOP 0xd503201f | |
216 | ||
217 | #define aarch64_compute_jump_table_size(htab) \ | |
218 | (((htab)->root.srelplt == NULL) ? 0 \ | |
219 | : (htab)->root.srelplt->reloc_count * GOT_ENTRY_SIZE) | |
220 | ||
221 | /* The first entry in a procedure linkage table looks like this | |
222 | if the distance between the PLTGOT and the PLT is < 4GB use | |
223 | these PLT entries. Note that the dynamic linker gets &PLTGOT[2] | |
224 | in x16 and needs to work out PLTGOT[1] by using an address of | |
cec5225b YZ |
225 | [x16,#-GOT_ENTRY_SIZE]. */ |
226 | static const bfd_byte elfNN_aarch64_small_plt0_entry[PLT_ENTRY_SIZE] = | |
a06ea964 NC |
227 | { |
228 | 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */ | |
229 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */ | |
caed7120 | 230 | #if ARCH_SIZE == 64 |
a06ea964 NC |
231 | 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */ |
232 | 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */ | |
caed7120 YZ |
233 | #else |
234 | 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */ | |
235 | 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */ | |
236 | #endif | |
a06ea964 NC |
237 | 0x20, 0x02, 0x1f, 0xd6, /* br x17 */ |
238 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
239 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
240 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
241 | }; | |
242 | ||
243 | /* Per function entry in a procedure linkage table looks like this | |
244 | if the distance between the PLTGOT and the PLT is < 4GB use | |
245 | these PLT entries. */ | |
cec5225b | 246 | static const bfd_byte elfNN_aarch64_small_plt_entry[PLT_SMALL_ENTRY_SIZE] = |
a06ea964 NC |
247 | { |
248 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
caed7120 | 249 | #if ARCH_SIZE == 64 |
a06ea964 NC |
250 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ |
251 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
caed7120 YZ |
252 | #else |
253 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
254 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
255 | #endif | |
a06ea964 NC |
256 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ |
257 | }; | |
258 | ||
259 | static const bfd_byte | |
cec5225b | 260 | elfNN_aarch64_tlsdesc_small_plt_entry[PLT_TLSDESC_ENTRY_SIZE] = |
a06ea964 NC |
261 | { |
262 | 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */ | |
263 | 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */ | |
264 | 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */ | |
caed7120 YZ |
265 | #if ARCH_SIZE == 64 |
266 | 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */ | |
a06ea964 | 267 | 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */ |
caed7120 YZ |
268 | #else |
269 | 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */ | |
270 | 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */ | |
271 | #endif | |
272 | 0x40, 0x00, 0x1f, 0xd6, /* br x2 */ | |
a06ea964 NC |
273 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ |
274 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
275 | }; | |
276 | ||
cec5225b YZ |
277 | #define elf_info_to_howto elfNN_aarch64_info_to_howto |
278 | #define elf_info_to_howto_rel elfNN_aarch64_info_to_howto | |
a06ea964 NC |
279 | |
280 | #define AARCH64_ELF_ABI_VERSION 0 | |
a06ea964 NC |
281 | |
282 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ | |
283 | #define ALL_ONES (~ (bfd_vma) 0) | |
284 | ||
a6bb11b2 YZ |
285 | /* Indexed by the bfd interal reloc enumerators. |
286 | Therefore, the table needs to be synced with BFD_RELOC_AARCH64_* | |
287 | in reloc.c. */ | |
a06ea964 | 288 | |
a6bb11b2 | 289 | static reloc_howto_type elfNN_aarch64_howto_table[] = |
a06ea964 | 290 | { |
a6bb11b2 | 291 | EMPTY_HOWTO (0), |
a06ea964 | 292 | |
a6bb11b2 | 293 | /* Basic data relocations. */ |
a06ea964 | 294 | |
a6bb11b2 YZ |
295 | #if ARCH_SIZE == 64 |
296 | HOWTO (R_AARCH64_NULL, /* type */ | |
a06ea964 | 297 | 0, /* rightshift */ |
a6bb11b2 YZ |
298 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
299 | 0, /* bitsize */ | |
a06ea964 NC |
300 | FALSE, /* pc_relative */ |
301 | 0, /* bitpos */ | |
302 | complain_overflow_dont, /* complain_on_overflow */ | |
303 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 304 | "R_AARCH64_NULL", /* name */ |
a06ea964 NC |
305 | FALSE, /* partial_inplace */ |
306 | 0, /* src_mask */ | |
a6bb11b2 | 307 | 0, /* dst_mask */ |
a06ea964 | 308 | FALSE), /* pcrel_offset */ |
a6bb11b2 YZ |
309 | #else |
310 | HOWTO (R_AARCH64_NONE, /* type */ | |
a06ea964 NC |
311 | 0, /* rightshift */ |
312 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
313 | 0, /* bitsize */ | |
314 | FALSE, /* pc_relative */ | |
315 | 0, /* bitpos */ | |
316 | complain_overflow_dont, /* complain_on_overflow */ | |
317 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 318 | "R_AARCH64_NONE", /* name */ |
a06ea964 NC |
319 | FALSE, /* partial_inplace */ |
320 | 0, /* src_mask */ | |
321 | 0, /* dst_mask */ | |
322 | FALSE), /* pcrel_offset */ | |
a6bb11b2 | 323 | #endif |
a06ea964 NC |
324 | |
325 | /* .xword: (S+A) */ | |
a6bb11b2 | 326 | HOWTO64 (AARCH64_R (ABS64), /* type */ |
a06ea964 NC |
327 | 0, /* rightshift */ |
328 | 4, /* size (4 = long long) */ | |
329 | 64, /* bitsize */ | |
330 | FALSE, /* pc_relative */ | |
331 | 0, /* bitpos */ | |
332 | complain_overflow_unsigned, /* complain_on_overflow */ | |
333 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 334 | AARCH64_R_STR (ABS64), /* name */ |
a06ea964 NC |
335 | FALSE, /* partial_inplace */ |
336 | ALL_ONES, /* src_mask */ | |
337 | ALL_ONES, /* dst_mask */ | |
338 | FALSE), /* pcrel_offset */ | |
339 | ||
340 | /* .word: (S+A) */ | |
a6bb11b2 | 341 | HOWTO (AARCH64_R (ABS32), /* type */ |
a06ea964 NC |
342 | 0, /* rightshift */ |
343 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
344 | 32, /* bitsize */ | |
345 | FALSE, /* pc_relative */ | |
346 | 0, /* bitpos */ | |
347 | complain_overflow_unsigned, /* complain_on_overflow */ | |
348 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 349 | AARCH64_R_STR (ABS32), /* name */ |
a06ea964 NC |
350 | FALSE, /* partial_inplace */ |
351 | 0xffffffff, /* src_mask */ | |
352 | 0xffffffff, /* dst_mask */ | |
353 | FALSE), /* pcrel_offset */ | |
354 | ||
355 | /* .half: (S+A) */ | |
a6bb11b2 | 356 | HOWTO (AARCH64_R (ABS16), /* type */ |
a06ea964 NC |
357 | 0, /* rightshift */ |
358 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
359 | 16, /* bitsize */ | |
360 | FALSE, /* pc_relative */ | |
361 | 0, /* bitpos */ | |
362 | complain_overflow_unsigned, /* complain_on_overflow */ | |
363 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 364 | AARCH64_R_STR (ABS16), /* name */ |
a06ea964 NC |
365 | FALSE, /* partial_inplace */ |
366 | 0xffff, /* src_mask */ | |
367 | 0xffff, /* dst_mask */ | |
368 | FALSE), /* pcrel_offset */ | |
369 | ||
370 | /* .xword: (S+A-P) */ | |
a6bb11b2 | 371 | HOWTO64 (AARCH64_R (PREL64), /* type */ |
a06ea964 NC |
372 | 0, /* rightshift */ |
373 | 4, /* size (4 = long long) */ | |
374 | 64, /* bitsize */ | |
375 | TRUE, /* pc_relative */ | |
376 | 0, /* bitpos */ | |
377 | complain_overflow_signed, /* complain_on_overflow */ | |
378 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 379 | AARCH64_R_STR (PREL64), /* name */ |
a06ea964 NC |
380 | FALSE, /* partial_inplace */ |
381 | ALL_ONES, /* src_mask */ | |
382 | ALL_ONES, /* dst_mask */ | |
383 | TRUE), /* pcrel_offset */ | |
384 | ||
385 | /* .word: (S+A-P) */ | |
a6bb11b2 | 386 | HOWTO (AARCH64_R (PREL32), /* type */ |
a06ea964 NC |
387 | 0, /* rightshift */ |
388 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
389 | 32, /* bitsize */ | |
390 | TRUE, /* pc_relative */ | |
391 | 0, /* bitpos */ | |
392 | complain_overflow_signed, /* complain_on_overflow */ | |
393 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 394 | AARCH64_R_STR (PREL32), /* name */ |
a06ea964 NC |
395 | FALSE, /* partial_inplace */ |
396 | 0xffffffff, /* src_mask */ | |
397 | 0xffffffff, /* dst_mask */ | |
398 | TRUE), /* pcrel_offset */ | |
399 | ||
400 | /* .half: (S+A-P) */ | |
a6bb11b2 | 401 | HOWTO (AARCH64_R (PREL16), /* type */ |
a06ea964 NC |
402 | 0, /* rightshift */ |
403 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
404 | 16, /* bitsize */ | |
405 | TRUE, /* pc_relative */ | |
406 | 0, /* bitpos */ | |
407 | complain_overflow_signed, /* complain_on_overflow */ | |
408 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 409 | AARCH64_R_STR (PREL16), /* name */ |
a06ea964 NC |
410 | FALSE, /* partial_inplace */ |
411 | 0xffff, /* src_mask */ | |
412 | 0xffff, /* dst_mask */ | |
413 | TRUE), /* pcrel_offset */ | |
414 | ||
415 | /* Group relocations to create a 16, 32, 48 or 64 bit | |
416 | unsigned data or abs address inline. */ | |
417 | ||
418 | /* MOVZ: ((S+A) >> 0) & 0xffff */ | |
a6bb11b2 | 419 | HOWTO (AARCH64_R (MOVW_UABS_G0), /* type */ |
a06ea964 NC |
420 | 0, /* rightshift */ |
421 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
422 | 16, /* bitsize */ | |
423 | FALSE, /* pc_relative */ | |
424 | 0, /* bitpos */ | |
425 | complain_overflow_unsigned, /* complain_on_overflow */ | |
426 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 427 | AARCH64_R_STR (MOVW_UABS_G0), /* name */ |
a06ea964 NC |
428 | FALSE, /* partial_inplace */ |
429 | 0xffff, /* src_mask */ | |
430 | 0xffff, /* dst_mask */ | |
431 | FALSE), /* pcrel_offset */ | |
432 | ||
433 | /* MOVK: ((S+A) >> 0) & 0xffff [no overflow check] */ | |
a6bb11b2 | 434 | HOWTO (AARCH64_R (MOVW_UABS_G0_NC), /* type */ |
a06ea964 NC |
435 | 0, /* rightshift */ |
436 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
437 | 16, /* bitsize */ | |
438 | FALSE, /* pc_relative */ | |
439 | 0, /* bitpos */ | |
440 | complain_overflow_dont, /* complain_on_overflow */ | |
441 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 442 | AARCH64_R_STR (MOVW_UABS_G0_NC), /* name */ |
a06ea964 NC |
443 | FALSE, /* partial_inplace */ |
444 | 0xffff, /* src_mask */ | |
445 | 0xffff, /* dst_mask */ | |
446 | FALSE), /* pcrel_offset */ | |
447 | ||
448 | /* MOVZ: ((S+A) >> 16) & 0xffff */ | |
a6bb11b2 | 449 | HOWTO (AARCH64_R (MOVW_UABS_G1), /* type */ |
a06ea964 NC |
450 | 16, /* rightshift */ |
451 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
452 | 16, /* bitsize */ | |
453 | FALSE, /* pc_relative */ | |
454 | 0, /* bitpos */ | |
455 | complain_overflow_unsigned, /* complain_on_overflow */ | |
456 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 457 | AARCH64_R_STR (MOVW_UABS_G1), /* name */ |
a06ea964 NC |
458 | FALSE, /* partial_inplace */ |
459 | 0xffff, /* src_mask */ | |
460 | 0xffff, /* dst_mask */ | |
461 | FALSE), /* pcrel_offset */ | |
462 | ||
463 | /* MOVK: ((S+A) >> 16) & 0xffff [no overflow check] */ | |
a6bb11b2 | 464 | HOWTO64 (AARCH64_R (MOVW_UABS_G1_NC), /* type */ |
a06ea964 NC |
465 | 16, /* rightshift */ |
466 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
467 | 16, /* bitsize */ | |
468 | FALSE, /* pc_relative */ | |
469 | 0, /* bitpos */ | |
470 | complain_overflow_dont, /* complain_on_overflow */ | |
471 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 472 | AARCH64_R_STR (MOVW_UABS_G1_NC), /* name */ |
a06ea964 NC |
473 | FALSE, /* partial_inplace */ |
474 | 0xffff, /* src_mask */ | |
475 | 0xffff, /* dst_mask */ | |
476 | FALSE), /* pcrel_offset */ | |
477 | ||
478 | /* MOVZ: ((S+A) >> 32) & 0xffff */ | |
a6bb11b2 | 479 | HOWTO64 (AARCH64_R (MOVW_UABS_G2), /* type */ |
a06ea964 NC |
480 | 32, /* rightshift */ |
481 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
482 | 16, /* bitsize */ | |
483 | FALSE, /* pc_relative */ | |
484 | 0, /* bitpos */ | |
485 | complain_overflow_unsigned, /* complain_on_overflow */ | |
486 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 487 | AARCH64_R_STR (MOVW_UABS_G2), /* name */ |
a06ea964 NC |
488 | FALSE, /* partial_inplace */ |
489 | 0xffff, /* src_mask */ | |
490 | 0xffff, /* dst_mask */ | |
491 | FALSE), /* pcrel_offset */ | |
492 | ||
493 | /* MOVK: ((S+A) >> 32) & 0xffff [no overflow check] */ | |
a6bb11b2 | 494 | HOWTO64 (AARCH64_R (MOVW_UABS_G2_NC), /* type */ |
a06ea964 NC |
495 | 32, /* rightshift */ |
496 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
497 | 16, /* bitsize */ | |
498 | FALSE, /* pc_relative */ | |
499 | 0, /* bitpos */ | |
500 | complain_overflow_dont, /* complain_on_overflow */ | |
501 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 502 | AARCH64_R_STR (MOVW_UABS_G2_NC), /* name */ |
a06ea964 NC |
503 | FALSE, /* partial_inplace */ |
504 | 0xffff, /* src_mask */ | |
505 | 0xffff, /* dst_mask */ | |
506 | FALSE), /* pcrel_offset */ | |
507 | ||
508 | /* MOVZ: ((S+A) >> 48) & 0xffff */ | |
a6bb11b2 | 509 | HOWTO64 (AARCH64_R (MOVW_UABS_G3), /* type */ |
a06ea964 NC |
510 | 48, /* rightshift */ |
511 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
512 | 16, /* bitsize */ | |
513 | FALSE, /* pc_relative */ | |
514 | 0, /* bitpos */ | |
515 | complain_overflow_unsigned, /* complain_on_overflow */ | |
516 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 517 | AARCH64_R_STR (MOVW_UABS_G3), /* name */ |
a06ea964 NC |
518 | FALSE, /* partial_inplace */ |
519 | 0xffff, /* src_mask */ | |
520 | 0xffff, /* dst_mask */ | |
521 | FALSE), /* pcrel_offset */ | |
522 | ||
523 | /* Group relocations to create high part of a 16, 32, 48 or 64 bit | |
524 | signed data or abs address inline. Will change instruction | |
525 | to MOVN or MOVZ depending on sign of calculated value. */ | |
526 | ||
527 | /* MOV[ZN]: ((S+A) >> 0) & 0xffff */ | |
a6bb11b2 | 528 | HOWTO (AARCH64_R (MOVW_SABS_G0), /* type */ |
a06ea964 NC |
529 | 0, /* rightshift */ |
530 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
531 | 16, /* bitsize */ | |
532 | FALSE, /* pc_relative */ | |
533 | 0, /* bitpos */ | |
534 | complain_overflow_signed, /* complain_on_overflow */ | |
535 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 536 | AARCH64_R_STR (MOVW_SABS_G0), /* name */ |
a06ea964 NC |
537 | FALSE, /* partial_inplace */ |
538 | 0xffff, /* src_mask */ | |
539 | 0xffff, /* dst_mask */ | |
540 | FALSE), /* pcrel_offset */ | |
541 | ||
542 | /* MOV[ZN]: ((S+A) >> 16) & 0xffff */ | |
a6bb11b2 | 543 | HOWTO64 (AARCH64_R (MOVW_SABS_G1), /* type */ |
a06ea964 NC |
544 | 16, /* rightshift */ |
545 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
546 | 16, /* bitsize */ | |
547 | FALSE, /* pc_relative */ | |
548 | 0, /* bitpos */ | |
549 | complain_overflow_signed, /* complain_on_overflow */ | |
550 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 551 | AARCH64_R_STR (MOVW_SABS_G1), /* name */ |
a06ea964 NC |
552 | FALSE, /* partial_inplace */ |
553 | 0xffff, /* src_mask */ | |
554 | 0xffff, /* dst_mask */ | |
555 | FALSE), /* pcrel_offset */ | |
556 | ||
557 | /* MOV[ZN]: ((S+A) >> 32) & 0xffff */ | |
a6bb11b2 | 558 | HOWTO64 (AARCH64_R (MOVW_SABS_G2), /* type */ |
a06ea964 NC |
559 | 32, /* rightshift */ |
560 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
561 | 16, /* bitsize */ | |
562 | FALSE, /* pc_relative */ | |
563 | 0, /* bitpos */ | |
564 | complain_overflow_signed, /* complain_on_overflow */ | |
565 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 566 | AARCH64_R_STR (MOVW_SABS_G2), /* name */ |
a06ea964 NC |
567 | FALSE, /* partial_inplace */ |
568 | 0xffff, /* src_mask */ | |
569 | 0xffff, /* dst_mask */ | |
570 | FALSE), /* pcrel_offset */ | |
571 | ||
572 | /* Relocations to generate 19, 21 and 33 bit PC-relative load/store | |
573 | addresses: PG(x) is (x & ~0xfff). */ | |
574 | ||
575 | /* LD-lit: ((S+A-P) >> 2) & 0x7ffff */ | |
a6bb11b2 | 576 | HOWTO (AARCH64_R (LD_PREL_LO19), /* type */ |
a06ea964 NC |
577 | 2, /* rightshift */ |
578 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
579 | 19, /* bitsize */ | |
580 | TRUE, /* pc_relative */ | |
581 | 0, /* bitpos */ | |
582 | complain_overflow_signed, /* complain_on_overflow */ | |
583 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 584 | AARCH64_R_STR (LD_PREL_LO19), /* name */ |
a06ea964 NC |
585 | FALSE, /* partial_inplace */ |
586 | 0x7ffff, /* src_mask */ | |
587 | 0x7ffff, /* dst_mask */ | |
588 | TRUE), /* pcrel_offset */ | |
589 | ||
590 | /* ADR: (S+A-P) & 0x1fffff */ | |
a6bb11b2 | 591 | HOWTO (AARCH64_R (ADR_PREL_LO21), /* type */ |
a06ea964 NC |
592 | 0, /* rightshift */ |
593 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
594 | 21, /* bitsize */ | |
595 | TRUE, /* pc_relative */ | |
596 | 0, /* bitpos */ | |
597 | complain_overflow_signed, /* complain_on_overflow */ | |
598 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 599 | AARCH64_R_STR (ADR_PREL_LO21), /* name */ |
a06ea964 NC |
600 | FALSE, /* partial_inplace */ |
601 | 0x1fffff, /* src_mask */ | |
602 | 0x1fffff, /* dst_mask */ | |
603 | TRUE), /* pcrel_offset */ | |
604 | ||
605 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
a6bb11b2 | 606 | HOWTO (AARCH64_R (ADR_PREL_PG_HI21), /* type */ |
a06ea964 NC |
607 | 12, /* rightshift */ |
608 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
609 | 21, /* bitsize */ | |
610 | TRUE, /* pc_relative */ | |
611 | 0, /* bitpos */ | |
612 | complain_overflow_signed, /* complain_on_overflow */ | |
613 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 614 | AARCH64_R_STR (ADR_PREL_PG_HI21), /* name */ |
a06ea964 NC |
615 | FALSE, /* partial_inplace */ |
616 | 0x1fffff, /* src_mask */ | |
617 | 0x1fffff, /* dst_mask */ | |
618 | TRUE), /* pcrel_offset */ | |
619 | ||
620 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff [no overflow check] */ | |
a6bb11b2 | 621 | HOWTO64 (AARCH64_R (ADR_PREL_PG_HI21_NC), /* type */ |
a06ea964 NC |
622 | 12, /* rightshift */ |
623 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
624 | 21, /* bitsize */ | |
625 | TRUE, /* pc_relative */ | |
626 | 0, /* bitpos */ | |
627 | complain_overflow_dont, /* complain_on_overflow */ | |
628 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 629 | AARCH64_R_STR (ADR_PREL_PG_HI21_NC), /* name */ |
a06ea964 NC |
630 | FALSE, /* partial_inplace */ |
631 | 0x1fffff, /* src_mask */ | |
632 | 0x1fffff, /* dst_mask */ | |
633 | TRUE), /* pcrel_offset */ | |
634 | ||
635 | /* ADD: (S+A) & 0xfff [no overflow check] */ | |
a6bb11b2 | 636 | HOWTO (AARCH64_R (ADD_ABS_LO12_NC), /* type */ |
a06ea964 NC |
637 | 0, /* rightshift */ |
638 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
639 | 12, /* bitsize */ | |
640 | FALSE, /* pc_relative */ | |
641 | 10, /* bitpos */ | |
642 | complain_overflow_dont, /* complain_on_overflow */ | |
643 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 644 | AARCH64_R_STR (ADD_ABS_LO12_NC), /* name */ |
a06ea964 NC |
645 | FALSE, /* partial_inplace */ |
646 | 0x3ffc00, /* src_mask */ | |
647 | 0x3ffc00, /* dst_mask */ | |
648 | FALSE), /* pcrel_offset */ | |
649 | ||
650 | /* LD/ST8: (S+A) & 0xfff */ | |
a6bb11b2 | 651 | HOWTO (AARCH64_R (LDST8_ABS_LO12_NC), /* type */ |
a06ea964 NC |
652 | 0, /* rightshift */ |
653 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
654 | 12, /* bitsize */ | |
655 | FALSE, /* pc_relative */ | |
656 | 0, /* bitpos */ | |
657 | complain_overflow_dont, /* complain_on_overflow */ | |
658 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 659 | AARCH64_R_STR (LDST8_ABS_LO12_NC), /* name */ |
a06ea964 NC |
660 | FALSE, /* partial_inplace */ |
661 | 0xfff, /* src_mask */ | |
662 | 0xfff, /* dst_mask */ | |
663 | FALSE), /* pcrel_offset */ | |
664 | ||
665 | /* Relocations for control-flow instructions. */ | |
666 | ||
667 | /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */ | |
a6bb11b2 | 668 | HOWTO (AARCH64_R (TSTBR14), /* type */ |
a06ea964 NC |
669 | 2, /* rightshift */ |
670 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
671 | 14, /* bitsize */ | |
672 | TRUE, /* pc_relative */ | |
673 | 0, /* bitpos */ | |
674 | complain_overflow_signed, /* complain_on_overflow */ | |
675 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 676 | AARCH64_R_STR (TSTBR14), /* name */ |
a06ea964 NC |
677 | FALSE, /* partial_inplace */ |
678 | 0x3fff, /* src_mask */ | |
679 | 0x3fff, /* dst_mask */ | |
680 | TRUE), /* pcrel_offset */ | |
681 | ||
682 | /* B.cond: ((S+A-P) >> 2) & 0x7ffff */ | |
a6bb11b2 | 683 | HOWTO (AARCH64_R (CONDBR19), /* type */ |
a06ea964 NC |
684 | 2, /* rightshift */ |
685 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
686 | 19, /* bitsize */ | |
687 | TRUE, /* pc_relative */ | |
688 | 0, /* bitpos */ | |
689 | complain_overflow_signed, /* complain_on_overflow */ | |
690 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 691 | AARCH64_R_STR (CONDBR19), /* name */ |
a06ea964 NC |
692 | FALSE, /* partial_inplace */ |
693 | 0x7ffff, /* src_mask */ | |
694 | 0x7ffff, /* dst_mask */ | |
695 | TRUE), /* pcrel_offset */ | |
696 | ||
a06ea964 | 697 | /* B: ((S+A-P) >> 2) & 0x3ffffff */ |
a6bb11b2 | 698 | HOWTO (AARCH64_R (JUMP26), /* type */ |
a06ea964 NC |
699 | 2, /* rightshift */ |
700 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
701 | 26, /* bitsize */ | |
702 | TRUE, /* pc_relative */ | |
703 | 0, /* bitpos */ | |
704 | complain_overflow_signed, /* complain_on_overflow */ | |
705 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 706 | AARCH64_R_STR (JUMP26), /* name */ |
a06ea964 NC |
707 | FALSE, /* partial_inplace */ |
708 | 0x3ffffff, /* src_mask */ | |
709 | 0x3ffffff, /* dst_mask */ | |
710 | TRUE), /* pcrel_offset */ | |
711 | ||
712 | /* BL: ((S+A-P) >> 2) & 0x3ffffff */ | |
a6bb11b2 | 713 | HOWTO (AARCH64_R (CALL26), /* type */ |
a06ea964 NC |
714 | 2, /* rightshift */ |
715 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
716 | 26, /* bitsize */ | |
717 | TRUE, /* pc_relative */ | |
718 | 0, /* bitpos */ | |
719 | complain_overflow_signed, /* complain_on_overflow */ | |
720 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 721 | AARCH64_R_STR (CALL26), /* name */ |
a06ea964 NC |
722 | FALSE, /* partial_inplace */ |
723 | 0x3ffffff, /* src_mask */ | |
724 | 0x3ffffff, /* dst_mask */ | |
725 | TRUE), /* pcrel_offset */ | |
726 | ||
727 | /* LD/ST16: (S+A) & 0xffe */ | |
a6bb11b2 | 728 | HOWTO (AARCH64_R (LDST16_ABS_LO12_NC), /* type */ |
a06ea964 NC |
729 | 1, /* rightshift */ |
730 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
731 | 12, /* bitsize */ | |
732 | FALSE, /* pc_relative */ | |
733 | 0, /* bitpos */ | |
734 | complain_overflow_dont, /* complain_on_overflow */ | |
735 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 736 | AARCH64_R_STR (LDST16_ABS_LO12_NC), /* name */ |
a06ea964 NC |
737 | FALSE, /* partial_inplace */ |
738 | 0xffe, /* src_mask */ | |
739 | 0xffe, /* dst_mask */ | |
740 | FALSE), /* pcrel_offset */ | |
741 | ||
742 | /* LD/ST32: (S+A) & 0xffc */ | |
a6bb11b2 | 743 | HOWTO (AARCH64_R (LDST32_ABS_LO12_NC), /* type */ |
a06ea964 NC |
744 | 2, /* rightshift */ |
745 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
746 | 12, /* bitsize */ | |
747 | FALSE, /* pc_relative */ | |
748 | 0, /* bitpos */ | |
749 | complain_overflow_dont, /* complain_on_overflow */ | |
750 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 751 | AARCH64_R_STR (LDST32_ABS_LO12_NC), /* name */ |
a06ea964 NC |
752 | FALSE, /* partial_inplace */ |
753 | 0xffc, /* src_mask */ | |
754 | 0xffc, /* dst_mask */ | |
755 | FALSE), /* pcrel_offset */ | |
756 | ||
757 | /* LD/ST64: (S+A) & 0xff8 */ | |
a6bb11b2 | 758 | HOWTO (AARCH64_R (LDST64_ABS_LO12_NC), /* type */ |
a06ea964 NC |
759 | 3, /* rightshift */ |
760 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
761 | 12, /* bitsize */ | |
762 | FALSE, /* pc_relative */ | |
763 | 0, /* bitpos */ | |
764 | complain_overflow_dont, /* complain_on_overflow */ | |
765 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 766 | AARCH64_R_STR (LDST64_ABS_LO12_NC), /* name */ |
a06ea964 NC |
767 | FALSE, /* partial_inplace */ |
768 | 0xff8, /* src_mask */ | |
769 | 0xff8, /* dst_mask */ | |
770 | FALSE), /* pcrel_offset */ | |
771 | ||
a06ea964 | 772 | /* LD/ST128: (S+A) & 0xff0 */ |
a6bb11b2 | 773 | HOWTO (AARCH64_R (LDST128_ABS_LO12_NC), /* type */ |
a06ea964 NC |
774 | 4, /* rightshift */ |
775 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
776 | 12, /* bitsize */ | |
777 | FALSE, /* pc_relative */ | |
778 | 0, /* bitpos */ | |
779 | complain_overflow_dont, /* complain_on_overflow */ | |
780 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 781 | AARCH64_R_STR (LDST128_ABS_LO12_NC), /* name */ |
a06ea964 NC |
782 | FALSE, /* partial_inplace */ |
783 | 0xff0, /* src_mask */ | |
784 | 0xff0, /* dst_mask */ | |
785 | FALSE), /* pcrel_offset */ | |
786 | ||
f41aef5f RE |
787 | /* Set a load-literal immediate field to bits |
788 | 0x1FFFFC of G(S)-P */ | |
a6bb11b2 | 789 | HOWTO (AARCH64_R (GOT_LD_PREL19), /* type */ |
f41aef5f RE |
790 | 2, /* rightshift */ |
791 | 2, /* size (0 = byte,1 = short,2 = long) */ | |
792 | 19, /* bitsize */ | |
793 | TRUE, /* pc_relative */ | |
794 | 0, /* bitpos */ | |
795 | complain_overflow_signed, /* complain_on_overflow */ | |
796 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 797 | AARCH64_R_STR (GOT_LD_PREL19), /* name */ |
f41aef5f RE |
798 | FALSE, /* partial_inplace */ |
799 | 0xffffe0, /* src_mask */ | |
800 | 0xffffe0, /* dst_mask */ | |
801 | TRUE), /* pcrel_offset */ | |
802 | ||
a06ea964 NC |
803 | /* Get to the page for the GOT entry for the symbol |
804 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 805 | HOWTO (AARCH64_R (ADR_GOT_PAGE), /* type */ |
a06ea964 NC |
806 | 12, /* rightshift */ |
807 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
808 | 21, /* bitsize */ | |
809 | TRUE, /* pc_relative */ | |
810 | 0, /* bitpos */ | |
811 | complain_overflow_dont, /* complain_on_overflow */ | |
812 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 813 | AARCH64_R_STR (ADR_GOT_PAGE), /* name */ |
a06ea964 NC |
814 | FALSE, /* partial_inplace */ |
815 | 0x1fffff, /* src_mask */ | |
816 | 0x1fffff, /* dst_mask */ | |
817 | TRUE), /* pcrel_offset */ | |
818 | ||
a6bb11b2 YZ |
819 | /* LD64: GOT offset G(S) & 0xff8 */ |
820 | HOWTO64 (AARCH64_R (LD64_GOT_LO12_NC), /* type */ | |
a06ea964 NC |
821 | 3, /* rightshift */ |
822 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
823 | 12, /* bitsize */ | |
824 | FALSE, /* pc_relative */ | |
825 | 0, /* bitpos */ | |
826 | complain_overflow_dont, /* complain_on_overflow */ | |
827 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 828 | AARCH64_R_STR (LD64_GOT_LO12_NC), /* name */ |
a06ea964 NC |
829 | FALSE, /* partial_inplace */ |
830 | 0xff8, /* src_mask */ | |
831 | 0xff8, /* dst_mask */ | |
a6bb11b2 | 832 | FALSE), /* pcrel_offset */ |
a06ea964 | 833 | |
a6bb11b2 YZ |
834 | /* LD32: GOT offset G(S) & 0xffc */ |
835 | HOWTO32 (AARCH64_R (LD32_GOT_LO12_NC), /* type */ | |
836 | 2, /* rightshift */ | |
837 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
838 | 12, /* bitsize */ | |
839 | FALSE, /* pc_relative */ | |
840 | 0, /* bitpos */ | |
841 | complain_overflow_dont, /* complain_on_overflow */ | |
842 | bfd_elf_generic_reloc, /* special_function */ | |
843 | AARCH64_R_STR (LD32_GOT_LO12_NC), /* name */ | |
844 | FALSE, /* partial_inplace */ | |
845 | 0xffc, /* src_mask */ | |
846 | 0xffc, /* dst_mask */ | |
847 | FALSE), /* pcrel_offset */ | |
a06ea964 NC |
848 | |
849 | /* Get to the page for the GOT entry for the symbol | |
850 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 851 | HOWTO (AARCH64_R (TLSGD_ADR_PAGE21), /* type */ |
a06ea964 NC |
852 | 12, /* rightshift */ |
853 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
854 | 21, /* bitsize */ | |
855 | TRUE, /* pc_relative */ | |
856 | 0, /* bitpos */ | |
857 | complain_overflow_dont, /* complain_on_overflow */ | |
858 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 859 | AARCH64_R_STR (TLSGD_ADR_PAGE21), /* name */ |
a06ea964 NC |
860 | FALSE, /* partial_inplace */ |
861 | 0x1fffff, /* src_mask */ | |
862 | 0x1fffff, /* dst_mask */ | |
863 | TRUE), /* pcrel_offset */ | |
864 | ||
865 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ | |
a6bb11b2 | 866 | HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC), /* type */ |
a06ea964 NC |
867 | 0, /* rightshift */ |
868 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
869 | 12, /* bitsize */ | |
870 | FALSE, /* pc_relative */ | |
871 | 0, /* bitpos */ | |
872 | complain_overflow_dont, /* complain_on_overflow */ | |
873 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 874 | AARCH64_R_STR (TLSGD_ADD_LO12_NC), /* name */ |
a06ea964 NC |
875 | FALSE, /* partial_inplace */ |
876 | 0xfff, /* src_mask */ | |
877 | 0xfff, /* dst_mask */ | |
878 | FALSE), /* pcrel_offset */ | |
879 | ||
a6bb11b2 | 880 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1), /* type */ |
a06ea964 NC |
881 | 16, /* rightshift */ |
882 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
883 | 16, /* bitsize */ | |
884 | FALSE, /* pc_relative */ | |
885 | 0, /* bitpos */ | |
886 | complain_overflow_dont, /* complain_on_overflow */ | |
887 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 888 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1), /* name */ |
a06ea964 NC |
889 | FALSE, /* partial_inplace */ |
890 | 0xffff, /* src_mask */ | |
891 | 0xffff, /* dst_mask */ | |
892 | FALSE), /* pcrel_offset */ | |
893 | ||
a6bb11b2 | 894 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */ |
a06ea964 NC |
895 | 0, /* rightshift */ |
896 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
897 | 32, /* bitsize */ | |
898 | FALSE, /* pc_relative */ | |
899 | 0, /* bitpos */ | |
900 | complain_overflow_dont, /* complain_on_overflow */ | |
901 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 902 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC), /* name */ |
a06ea964 NC |
903 | FALSE, /* partial_inplace */ |
904 | 0xffff, /* src_mask */ | |
905 | 0xffff, /* dst_mask */ | |
906 | FALSE), /* pcrel_offset */ | |
907 | ||
a6bb11b2 | 908 | HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21), /* type */ |
a06ea964 NC |
909 | 12, /* rightshift */ |
910 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
911 | 21, /* bitsize */ | |
912 | FALSE, /* pc_relative */ | |
913 | 0, /* bitpos */ | |
914 | complain_overflow_dont, /* complain_on_overflow */ | |
915 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 916 | AARCH64_R_STR (TLSIE_ADR_GOTTPREL_PAGE21), /* name */ |
a06ea964 NC |
917 | FALSE, /* partial_inplace */ |
918 | 0x1fffff, /* src_mask */ | |
919 | 0x1fffff, /* dst_mask */ | |
920 | FALSE), /* pcrel_offset */ | |
921 | ||
a6bb11b2 | 922 | HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC), /* type */ |
a06ea964 NC |
923 | 3, /* rightshift */ |
924 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
925 | 12, /* bitsize */ | |
926 | FALSE, /* pc_relative */ | |
927 | 0, /* bitpos */ | |
928 | complain_overflow_dont, /* complain_on_overflow */ | |
929 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 930 | AARCH64_R_STR (TLSIE_LD64_GOTTPREL_LO12_NC), /* name */ |
a06ea964 NC |
931 | FALSE, /* partial_inplace */ |
932 | 0xff8, /* src_mask */ | |
933 | 0xff8, /* dst_mask */ | |
934 | FALSE), /* pcrel_offset */ | |
935 | ||
a6bb11b2 YZ |
936 | HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC), /* type */ |
937 | 2, /* rightshift */ | |
938 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
939 | 12, /* bitsize */ | |
940 | FALSE, /* pc_relative */ | |
941 | 0, /* bitpos */ | |
942 | complain_overflow_dont, /* complain_on_overflow */ | |
943 | bfd_elf_generic_reloc, /* special_function */ | |
944 | AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC), /* name */ | |
945 | FALSE, /* partial_inplace */ | |
946 | 0xffc, /* src_mask */ | |
947 | 0xffc, /* dst_mask */ | |
948 | FALSE), /* pcrel_offset */ | |
949 | ||
950 | HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19), /* type */ | |
bb3f9ed8 | 951 | 2, /* rightshift */ |
a06ea964 NC |
952 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
953 | 21, /* bitsize */ | |
954 | FALSE, /* pc_relative */ | |
955 | 0, /* bitpos */ | |
956 | complain_overflow_dont, /* complain_on_overflow */ | |
957 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 958 | AARCH64_R_STR (TLSIE_LD_GOTTPREL_PREL19), /* name */ |
a06ea964 NC |
959 | FALSE, /* partial_inplace */ |
960 | 0x1ffffc, /* src_mask */ | |
961 | 0x1ffffc, /* dst_mask */ | |
962 | FALSE), /* pcrel_offset */ | |
963 | ||
a6bb11b2 | 964 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2), /* type */ |
bb3f9ed8 | 965 | 32, /* rightshift */ |
a06ea964 NC |
966 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
967 | 12, /* bitsize */ | |
968 | FALSE, /* pc_relative */ | |
969 | 0, /* bitpos */ | |
970 | complain_overflow_dont, /* complain_on_overflow */ | |
971 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 972 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G2), /* name */ |
a06ea964 NC |
973 | FALSE, /* partial_inplace */ |
974 | 0xffff, /* src_mask */ | |
975 | 0xffff, /* dst_mask */ | |
976 | FALSE), /* pcrel_offset */ | |
977 | ||
a6bb11b2 | 978 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1), /* type */ |
bb3f9ed8 | 979 | 16, /* rightshift */ |
a06ea964 NC |
980 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
981 | 12, /* bitsize */ | |
982 | FALSE, /* pc_relative */ | |
983 | 0, /* bitpos */ | |
984 | complain_overflow_dont, /* complain_on_overflow */ | |
985 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 986 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1), /* name */ |
a06ea964 NC |
987 | FALSE, /* partial_inplace */ |
988 | 0xffff, /* src_mask */ | |
989 | 0xffff, /* dst_mask */ | |
990 | FALSE), /* pcrel_offset */ | |
991 | ||
a6bb11b2 | 992 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */ |
bb3f9ed8 | 993 | 16, /* rightshift */ |
a06ea964 NC |
994 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
995 | 12, /* bitsize */ | |
996 | FALSE, /* pc_relative */ | |
997 | 0, /* bitpos */ | |
998 | complain_overflow_dont, /* complain_on_overflow */ | |
999 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1000 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC), /* name */ |
a06ea964 NC |
1001 | FALSE, /* partial_inplace */ |
1002 | 0xffff, /* src_mask */ | |
1003 | 0xffff, /* dst_mask */ | |
1004 | FALSE), /* pcrel_offset */ | |
1005 | ||
a6bb11b2 | 1006 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0), /* type */ |
a06ea964 NC |
1007 | 0, /* rightshift */ |
1008 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1009 | 12, /* bitsize */ | |
1010 | FALSE, /* pc_relative */ | |
1011 | 0, /* bitpos */ | |
1012 | complain_overflow_dont, /* complain_on_overflow */ | |
1013 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1014 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0), /* name */ |
a06ea964 NC |
1015 | FALSE, /* partial_inplace */ |
1016 | 0xffff, /* src_mask */ | |
1017 | 0xffff, /* dst_mask */ | |
1018 | FALSE), /* pcrel_offset */ | |
1019 | ||
a6bb11b2 | 1020 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC), /* type */ |
a06ea964 NC |
1021 | 0, /* rightshift */ |
1022 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1023 | 12, /* bitsize */ | |
1024 | FALSE, /* pc_relative */ | |
1025 | 0, /* bitpos */ | |
1026 | complain_overflow_dont, /* complain_on_overflow */ | |
1027 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1028 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC), /* name */ |
a06ea964 NC |
1029 | FALSE, /* partial_inplace */ |
1030 | 0xffff, /* src_mask */ | |
1031 | 0xffff, /* dst_mask */ | |
1032 | FALSE), /* pcrel_offset */ | |
1033 | ||
a6bb11b2 | 1034 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12), /* type */ |
bb3f9ed8 | 1035 | 12, /* rightshift */ |
a06ea964 NC |
1036 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1037 | 12, /* bitsize */ | |
1038 | FALSE, /* pc_relative */ | |
1039 | 0, /* bitpos */ | |
1040 | complain_overflow_dont, /* complain_on_overflow */ | |
1041 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1042 | AARCH64_R_STR (TLSLE_ADD_TPREL_HI12), /* name */ |
a06ea964 NC |
1043 | FALSE, /* partial_inplace */ |
1044 | 0xfff, /* src_mask */ | |
1045 | 0xfff, /* dst_mask */ | |
1046 | FALSE), /* pcrel_offset */ | |
1047 | ||
a6bb11b2 | 1048 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12), /* type */ |
a06ea964 NC |
1049 | 0, /* rightshift */ |
1050 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1051 | 12, /* bitsize */ | |
1052 | FALSE, /* pc_relative */ | |
1053 | 0, /* bitpos */ | |
1054 | complain_overflow_dont, /* complain_on_overflow */ | |
1055 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1056 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12), /* name */ |
a06ea964 NC |
1057 | FALSE, /* partial_inplace */ |
1058 | 0xfff, /* src_mask */ | |
1059 | 0xfff, /* dst_mask */ | |
1060 | FALSE), /* pcrel_offset */ | |
1061 | ||
a6bb11b2 | 1062 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC), /* type */ |
a06ea964 NC |
1063 | 0, /* rightshift */ |
1064 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1065 | 12, /* bitsize */ | |
1066 | FALSE, /* pc_relative */ | |
1067 | 0, /* bitpos */ | |
1068 | complain_overflow_dont, /* complain_on_overflow */ | |
1069 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1070 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC), /* name */ |
a06ea964 NC |
1071 | FALSE, /* partial_inplace */ |
1072 | 0xfff, /* src_mask */ | |
1073 | 0xfff, /* dst_mask */ | |
1074 | FALSE), /* pcrel_offset */ | |
a06ea964 | 1075 | |
a6bb11b2 | 1076 | HOWTO (AARCH64_R (TLSDESC_LD_PREL19), /* type */ |
bb3f9ed8 | 1077 | 2, /* rightshift */ |
a06ea964 NC |
1078 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1079 | 21, /* bitsize */ | |
1080 | TRUE, /* pc_relative */ | |
1081 | 0, /* bitpos */ | |
1082 | complain_overflow_dont, /* complain_on_overflow */ | |
1083 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1084 | AARCH64_R_STR (TLSDESC_LD_PREL19), /* name */ |
a06ea964 NC |
1085 | FALSE, /* partial_inplace */ |
1086 | 0x1ffffc, /* src_mask */ | |
1087 | 0x1ffffc, /* dst_mask */ | |
1088 | TRUE), /* pcrel_offset */ | |
1089 | ||
a6bb11b2 | 1090 | HOWTO (AARCH64_R (TLSDESC_ADR_PREL21), /* type */ |
a06ea964 NC |
1091 | 0, /* rightshift */ |
1092 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1093 | 21, /* bitsize */ | |
1094 | TRUE, /* pc_relative */ | |
1095 | 0, /* bitpos */ | |
1096 | complain_overflow_dont, /* complain_on_overflow */ | |
1097 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1098 | AARCH64_R_STR (TLSDESC_ADR_PREL21), /* name */ |
a06ea964 NC |
1099 | FALSE, /* partial_inplace */ |
1100 | 0x1fffff, /* src_mask */ | |
1101 | 0x1fffff, /* dst_mask */ | |
1102 | TRUE), /* pcrel_offset */ | |
1103 | ||
1104 | /* Get to the page for the GOT entry for the symbol | |
1105 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 1106 | HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21), /* type */ |
a06ea964 NC |
1107 | 12, /* rightshift */ |
1108 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1109 | 21, /* bitsize */ | |
1110 | TRUE, /* pc_relative */ | |
1111 | 0, /* bitpos */ | |
1112 | complain_overflow_dont, /* complain_on_overflow */ | |
1113 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1114 | AARCH64_R_STR (TLSDESC_ADR_PAGE21), /* name */ |
a06ea964 NC |
1115 | FALSE, /* partial_inplace */ |
1116 | 0x1fffff, /* src_mask */ | |
1117 | 0x1fffff, /* dst_mask */ | |
1118 | TRUE), /* pcrel_offset */ | |
1119 | ||
a6bb11b2 YZ |
1120 | /* LD64: GOT offset G(S) & 0xff8. */ |
1121 | HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12_NC), /* type */ | |
a06ea964 NC |
1122 | 3, /* rightshift */ |
1123 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1124 | 12, /* bitsize */ | |
1125 | FALSE, /* pc_relative */ | |
1126 | 0, /* bitpos */ | |
1127 | complain_overflow_dont, /* complain_on_overflow */ | |
1128 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1129 | AARCH64_R_STR (TLSDESC_LD64_LO12_NC), /* name */ |
a06ea964 | 1130 | FALSE, /* partial_inplace */ |
a6bb11b2 YZ |
1131 | 0xff8, /* src_mask */ |
1132 | 0xff8, /* dst_mask */ | |
1133 | FALSE), /* pcrel_offset */ | |
1134 | ||
1135 | /* LD32: GOT offset G(S) & 0xffc. */ | |
1136 | HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC), /* type */ | |
1137 | 2, /* rightshift */ | |
1138 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1139 | 12, /* bitsize */ | |
1140 | FALSE, /* pc_relative */ | |
1141 | 0, /* bitpos */ | |
1142 | complain_overflow_dont, /* complain_on_overflow */ | |
1143 | bfd_elf_generic_reloc, /* special_function */ | |
1144 | AARCH64_R_STR (TLSDESC_LD32_LO12_NC), /* name */ | |
1145 | FALSE, /* partial_inplace */ | |
1146 | 0xffc, /* src_mask */ | |
1147 | 0xffc, /* dst_mask */ | |
a06ea964 NC |
1148 | FALSE), /* pcrel_offset */ |
1149 | ||
1150 | /* ADD: GOT offset G(S) & 0xfff. */ | |
a6bb11b2 | 1151 | HOWTO (AARCH64_R (TLSDESC_ADD_LO12_NC), /* type */ |
a06ea964 NC |
1152 | 0, /* rightshift */ |
1153 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1154 | 12, /* bitsize */ | |
1155 | FALSE, /* pc_relative */ | |
1156 | 0, /* bitpos */ | |
1157 | complain_overflow_dont, /* complain_on_overflow */ | |
1158 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1159 | AARCH64_R_STR (TLSDESC_ADD_LO12_NC), /* name */ |
a06ea964 NC |
1160 | FALSE, /* partial_inplace */ |
1161 | 0xfff, /* src_mask */ | |
1162 | 0xfff, /* dst_mask */ | |
1163 | FALSE), /* pcrel_offset */ | |
1164 | ||
a6bb11b2 | 1165 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G1), /* type */ |
bb3f9ed8 | 1166 | 16, /* rightshift */ |
a06ea964 NC |
1167 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1168 | 12, /* bitsize */ | |
1169 | FALSE, /* pc_relative */ | |
1170 | 0, /* bitpos */ | |
1171 | complain_overflow_dont, /* complain_on_overflow */ | |
1172 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1173 | AARCH64_R_STR (TLSDESC_OFF_G1), /* name */ |
a06ea964 NC |
1174 | FALSE, /* partial_inplace */ |
1175 | 0xffff, /* src_mask */ | |
1176 | 0xffff, /* dst_mask */ | |
1177 | FALSE), /* pcrel_offset */ | |
1178 | ||
a6bb11b2 | 1179 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC), /* type */ |
a06ea964 NC |
1180 | 0, /* rightshift */ |
1181 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1182 | 12, /* bitsize */ | |
1183 | FALSE, /* pc_relative */ | |
1184 | 0, /* bitpos */ | |
1185 | complain_overflow_dont, /* complain_on_overflow */ | |
1186 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1187 | AARCH64_R_STR (TLSDESC_OFF_G0_NC), /* name */ |
a06ea964 NC |
1188 | FALSE, /* partial_inplace */ |
1189 | 0xffff, /* src_mask */ | |
1190 | 0xffff, /* dst_mask */ | |
1191 | FALSE), /* pcrel_offset */ | |
1192 | ||
a6bb11b2 | 1193 | HOWTO64 (AARCH64_R (TLSDESC_LDR), /* type */ |
a06ea964 NC |
1194 | 0, /* rightshift */ |
1195 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1196 | 12, /* bitsize */ | |
1197 | FALSE, /* pc_relative */ | |
1198 | 0, /* bitpos */ | |
1199 | complain_overflow_dont, /* complain_on_overflow */ | |
1200 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1201 | AARCH64_R_STR (TLSDESC_LDR), /* name */ |
a06ea964 NC |
1202 | FALSE, /* partial_inplace */ |
1203 | 0x0, /* src_mask */ | |
1204 | 0x0, /* dst_mask */ | |
1205 | FALSE), /* pcrel_offset */ | |
1206 | ||
a6bb11b2 | 1207 | HOWTO64 (AARCH64_R (TLSDESC_ADD), /* type */ |
a06ea964 NC |
1208 | 0, /* rightshift */ |
1209 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1210 | 12, /* bitsize */ | |
1211 | FALSE, /* pc_relative */ | |
1212 | 0, /* bitpos */ | |
1213 | complain_overflow_dont, /* complain_on_overflow */ | |
1214 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1215 | AARCH64_R_STR (TLSDESC_ADD), /* name */ |
a06ea964 NC |
1216 | FALSE, /* partial_inplace */ |
1217 | 0x0, /* src_mask */ | |
1218 | 0x0, /* dst_mask */ | |
1219 | FALSE), /* pcrel_offset */ | |
1220 | ||
a6bb11b2 | 1221 | HOWTO (AARCH64_R (TLSDESC_CALL), /* type */ |
a06ea964 NC |
1222 | 0, /* rightshift */ |
1223 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1224 | 12, /* bitsize */ | |
1225 | FALSE, /* pc_relative */ | |
1226 | 0, /* bitpos */ | |
1227 | complain_overflow_dont, /* complain_on_overflow */ | |
1228 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1229 | AARCH64_R_STR (TLSDESC_CALL), /* name */ |
a06ea964 NC |
1230 | FALSE, /* partial_inplace */ |
1231 | 0x0, /* src_mask */ | |
1232 | 0x0, /* dst_mask */ | |
1233 | FALSE), /* pcrel_offset */ | |
a6bb11b2 YZ |
1234 | |
1235 | HOWTO (AARCH64_R (COPY), /* type */ | |
1236 | 0, /* rightshift */ | |
1237 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1238 | 64, /* bitsize */ | |
1239 | FALSE, /* pc_relative */ | |
1240 | 0, /* bitpos */ | |
1241 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1242 | bfd_elf_generic_reloc, /* special_function */ | |
1243 | AARCH64_R_STR (COPY), /* name */ | |
1244 | TRUE, /* partial_inplace */ | |
1245 | 0xffffffff, /* src_mask */ | |
1246 | 0xffffffff, /* dst_mask */ | |
1247 | FALSE), /* pcrel_offset */ | |
1248 | ||
1249 | HOWTO (AARCH64_R (GLOB_DAT), /* type */ | |
1250 | 0, /* rightshift */ | |
1251 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1252 | 64, /* bitsize */ | |
1253 | FALSE, /* pc_relative */ | |
1254 | 0, /* bitpos */ | |
1255 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1256 | bfd_elf_generic_reloc, /* special_function */ | |
1257 | AARCH64_R_STR (GLOB_DAT), /* name */ | |
1258 | TRUE, /* partial_inplace */ | |
1259 | 0xffffffff, /* src_mask */ | |
1260 | 0xffffffff, /* dst_mask */ | |
1261 | FALSE), /* pcrel_offset */ | |
1262 | ||
1263 | HOWTO (AARCH64_R (JUMP_SLOT), /* type */ | |
1264 | 0, /* rightshift */ | |
1265 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1266 | 64, /* bitsize */ | |
1267 | FALSE, /* pc_relative */ | |
1268 | 0, /* bitpos */ | |
1269 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1270 | bfd_elf_generic_reloc, /* special_function */ | |
1271 | AARCH64_R_STR (JUMP_SLOT), /* name */ | |
1272 | TRUE, /* partial_inplace */ | |
1273 | 0xffffffff, /* src_mask */ | |
1274 | 0xffffffff, /* dst_mask */ | |
1275 | FALSE), /* pcrel_offset */ | |
1276 | ||
1277 | HOWTO (AARCH64_R (RELATIVE), /* type */ | |
1278 | 0, /* rightshift */ | |
1279 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1280 | 64, /* bitsize */ | |
1281 | FALSE, /* pc_relative */ | |
1282 | 0, /* bitpos */ | |
1283 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1284 | bfd_elf_generic_reloc, /* special_function */ | |
1285 | AARCH64_R_STR (RELATIVE), /* name */ | |
1286 | TRUE, /* partial_inplace */ | |
1287 | ALL_ONES, /* src_mask */ | |
1288 | ALL_ONES, /* dst_mask */ | |
1289 | FALSE), /* pcrel_offset */ | |
1290 | ||
1291 | HOWTO (AARCH64_R (TLS_DTPMOD), /* type */ | |
1292 | 0, /* rightshift */ | |
1293 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1294 | 64, /* bitsize */ | |
1295 | FALSE, /* pc_relative */ | |
1296 | 0, /* bitpos */ | |
1297 | complain_overflow_dont, /* complain_on_overflow */ | |
1298 | bfd_elf_generic_reloc, /* special_function */ | |
1299 | AARCH64_R_STR (TLS_DTPMOD), /* name */ | |
1300 | FALSE, /* partial_inplace */ | |
1301 | 0, /* src_mask */ | |
1302 | ALL_ONES, /* dst_mask */ | |
1303 | FALSE), /* pc_reloffset */ | |
1304 | ||
1305 | HOWTO (AARCH64_R (TLS_DTPREL), /* type */ | |
1306 | 0, /* rightshift */ | |
1307 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1308 | 64, /* bitsize */ | |
1309 | FALSE, /* pc_relative */ | |
1310 | 0, /* bitpos */ | |
1311 | complain_overflow_dont, /* complain_on_overflow */ | |
1312 | bfd_elf_generic_reloc, /* special_function */ | |
1313 | AARCH64_R_STR (TLS_DTPREL), /* name */ | |
1314 | FALSE, /* partial_inplace */ | |
1315 | 0, /* src_mask */ | |
1316 | ALL_ONES, /* dst_mask */ | |
1317 | FALSE), /* pcrel_offset */ | |
1318 | ||
1319 | HOWTO (AARCH64_R (TLS_TPREL), /* type */ | |
1320 | 0, /* rightshift */ | |
1321 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1322 | 64, /* bitsize */ | |
1323 | FALSE, /* pc_relative */ | |
1324 | 0, /* bitpos */ | |
1325 | complain_overflow_dont, /* complain_on_overflow */ | |
1326 | bfd_elf_generic_reloc, /* special_function */ | |
1327 | AARCH64_R_STR (TLS_TPREL), /* name */ | |
1328 | FALSE, /* partial_inplace */ | |
1329 | 0, /* src_mask */ | |
1330 | ALL_ONES, /* dst_mask */ | |
1331 | FALSE), /* pcrel_offset */ | |
1332 | ||
1333 | HOWTO (AARCH64_R (TLSDESC), /* type */ | |
1334 | 0, /* rightshift */ | |
1335 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1336 | 64, /* bitsize */ | |
1337 | FALSE, /* pc_relative */ | |
1338 | 0, /* bitpos */ | |
1339 | complain_overflow_dont, /* complain_on_overflow */ | |
1340 | bfd_elf_generic_reloc, /* special_function */ | |
1341 | AARCH64_R_STR (TLSDESC), /* name */ | |
1342 | FALSE, /* partial_inplace */ | |
1343 | 0, /* src_mask */ | |
1344 | ALL_ONES, /* dst_mask */ | |
1345 | FALSE), /* pcrel_offset */ | |
1346 | ||
1347 | HOWTO (AARCH64_R (IRELATIVE), /* type */ | |
1348 | 0, /* rightshift */ | |
1349 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1350 | 64, /* bitsize */ | |
1351 | FALSE, /* pc_relative */ | |
1352 | 0, /* bitpos */ | |
1353 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1354 | bfd_elf_generic_reloc, /* special_function */ | |
1355 | AARCH64_R_STR (IRELATIVE), /* name */ | |
1356 | FALSE, /* partial_inplace */ | |
1357 | 0, /* src_mask */ | |
1358 | ALL_ONES, /* dst_mask */ | |
1359 | FALSE), /* pcrel_offset */ | |
1360 | ||
1361 | EMPTY_HOWTO (0), | |
a06ea964 NC |
1362 | }; |
1363 | ||
a6bb11b2 YZ |
1364 | static reloc_howto_type elfNN_aarch64_howto_none = |
1365 | HOWTO (R_AARCH64_NONE, /* type */ | |
1366 | 0, /* rightshift */ | |
1367 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1368 | 0, /* bitsize */ | |
1369 | FALSE, /* pc_relative */ | |
1370 | 0, /* bitpos */ | |
1371 | complain_overflow_dont,/* complain_on_overflow */ | |
1372 | bfd_elf_generic_reloc, /* special_function */ | |
1373 | "R_AARCH64_NONE", /* name */ | |
1374 | FALSE, /* partial_inplace */ | |
1375 | 0, /* src_mask */ | |
1376 | 0, /* dst_mask */ | |
1377 | FALSE); /* pcrel_offset */ | |
1378 | ||
1379 | /* Given HOWTO, return the bfd internal relocation enumerator. */ | |
1380 | ||
1381 | static bfd_reloc_code_real_type | |
1382 | elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type *howto) | |
1383 | { | |
1384 | const int size | |
1385 | = (int) ARRAY_SIZE (elfNN_aarch64_howto_table); | |
1386 | const ptrdiff_t offset | |
1387 | = howto - elfNN_aarch64_howto_table; | |
1388 | ||
1389 | if (offset > 0 && offset < size - 1) | |
1390 | return BFD_RELOC_AARCH64_RELOC_START + offset; | |
1391 | ||
1392 | if (howto == &elfNN_aarch64_howto_none) | |
1393 | return BFD_RELOC_AARCH64_NONE; | |
1394 | ||
1395 | return BFD_RELOC_AARCH64_RELOC_START; | |
1396 | } | |
1397 | ||
1398 | /* Given R_TYPE, return the bfd internal relocation enumerator. */ | |
1399 | ||
1400 | static bfd_reloc_code_real_type | |
1401 | elfNN_aarch64_bfd_reloc_from_type (unsigned int r_type) | |
1402 | { | |
1403 | static bfd_boolean initialized_p = FALSE; | |
1404 | /* Indexed by R_TYPE, values are offsets in the howto_table. */ | |
1405 | static unsigned int offsets[R_AARCH64_end]; | |
1406 | ||
1407 | if (initialized_p == FALSE) | |
1408 | { | |
1409 | unsigned int i; | |
1410 | ||
1411 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) | |
1412 | if (elfNN_aarch64_howto_table[i].type != 0) | |
1413 | offsets[elfNN_aarch64_howto_table[i].type] = i; | |
1414 | ||
1415 | initialized_p = TRUE; | |
1416 | } | |
1417 | ||
1418 | if (r_type == R_AARCH64_NONE || r_type == R_AARCH64_NULL) | |
1419 | return BFD_RELOC_AARCH64_NONE; | |
1420 | ||
1421 | return BFD_RELOC_AARCH64_RELOC_START + offsets[r_type]; | |
1422 | } | |
1423 | ||
1424 | struct elf_aarch64_reloc_map | |
1425 | { | |
1426 | bfd_reloc_code_real_type from; | |
1427 | bfd_reloc_code_real_type to; | |
1428 | }; | |
1429 | ||
1430 | /* Map bfd generic reloc to AArch64-specific reloc. */ | |
1431 | static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map[] = | |
1432 | { | |
1433 | {BFD_RELOC_NONE, BFD_RELOC_AARCH64_NONE}, | |
1434 | ||
1435 | /* Basic data relocations. */ | |
1436 | {BFD_RELOC_CTOR, BFD_RELOC_AARCH64_NN}, | |
1437 | {BFD_RELOC_64, BFD_RELOC_AARCH64_64}, | |
1438 | {BFD_RELOC_32, BFD_RELOC_AARCH64_32}, | |
1439 | {BFD_RELOC_16, BFD_RELOC_AARCH64_16}, | |
1440 | {BFD_RELOC_64_PCREL, BFD_RELOC_AARCH64_64_PCREL}, | |
1441 | {BFD_RELOC_32_PCREL, BFD_RELOC_AARCH64_32_PCREL}, | |
1442 | {BFD_RELOC_16_PCREL, BFD_RELOC_AARCH64_16_PCREL}, | |
1443 | }; | |
1444 | ||
1445 | /* Given the bfd internal relocation enumerator in CODE, return the | |
1446 | corresponding howto entry. */ | |
1447 | ||
1448 | static reloc_howto_type * | |
1449 | elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code) | |
1450 | { | |
1451 | unsigned int i; | |
1452 | ||
1453 | /* Convert bfd generic reloc to AArch64-specific reloc. */ | |
1454 | if (code < BFD_RELOC_AARCH64_RELOC_START | |
1455 | || code > BFD_RELOC_AARCH64_RELOC_END) | |
1456 | for (i = 0; i < ARRAY_SIZE (elf_aarch64_reloc_map); i++) | |
1457 | if (elf_aarch64_reloc_map[i].from == code) | |
1458 | { | |
1459 | code = elf_aarch64_reloc_map[i].to; | |
1460 | break; | |
1461 | } | |
1462 | ||
1463 | if (code > BFD_RELOC_AARCH64_RELOC_START | |
1464 | && code < BFD_RELOC_AARCH64_RELOC_END) | |
1465 | if (elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START].type) | |
1466 | return &elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START]; | |
1467 | ||
54757ed1 AP |
1468 | if (code == BFD_RELOC_AARCH64_NONE) |
1469 | return &elfNN_aarch64_howto_none; | |
1470 | ||
a6bb11b2 YZ |
1471 | return NULL; |
1472 | } | |
1473 | ||
a06ea964 | 1474 | static reloc_howto_type * |
cec5225b | 1475 | elfNN_aarch64_howto_from_type (unsigned int r_type) |
a06ea964 | 1476 | { |
a6bb11b2 YZ |
1477 | bfd_reloc_code_real_type val; |
1478 | reloc_howto_type *howto; | |
1479 | ||
cec5225b YZ |
1480 | #if ARCH_SIZE == 32 |
1481 | if (r_type > 256) | |
1482 | { | |
1483 | bfd_set_error (bfd_error_bad_value); | |
1484 | return NULL; | |
1485 | } | |
1486 | #endif | |
1487 | ||
a6bb11b2 YZ |
1488 | if (r_type == R_AARCH64_NONE) |
1489 | return &elfNN_aarch64_howto_none; | |
a06ea964 | 1490 | |
a6bb11b2 YZ |
1491 | val = elfNN_aarch64_bfd_reloc_from_type (r_type); |
1492 | howto = elfNN_aarch64_howto_from_bfd_reloc (val); | |
a06ea964 | 1493 | |
a6bb11b2 YZ |
1494 | if (howto != NULL) |
1495 | return howto; | |
a06ea964 | 1496 | |
a06ea964 NC |
1497 | bfd_set_error (bfd_error_bad_value); |
1498 | return NULL; | |
1499 | } | |
1500 | ||
1501 | static void | |
cec5225b | 1502 | elfNN_aarch64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc, |
a06ea964 NC |
1503 | Elf_Internal_Rela *elf_reloc) |
1504 | { | |
1505 | unsigned int r_type; | |
1506 | ||
cec5225b YZ |
1507 | r_type = ELFNN_R_TYPE (elf_reloc->r_info); |
1508 | bfd_reloc->howto = elfNN_aarch64_howto_from_type (r_type); | |
a06ea964 NC |
1509 | } |
1510 | ||
a06ea964 | 1511 | static reloc_howto_type * |
cec5225b | 1512 | elfNN_aarch64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
1513 | bfd_reloc_code_real_type code) |
1514 | { | |
a6bb11b2 | 1515 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (code); |
a06ea964 | 1516 | |
a6bb11b2 YZ |
1517 | if (howto != NULL) |
1518 | return howto; | |
a06ea964 NC |
1519 | |
1520 | bfd_set_error (bfd_error_bad_value); | |
1521 | return NULL; | |
1522 | } | |
1523 | ||
1524 | static reloc_howto_type * | |
cec5225b | 1525 | elfNN_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
1526 | const char *r_name) |
1527 | { | |
1528 | unsigned int i; | |
1529 | ||
a6bb11b2 YZ |
1530 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) |
1531 | if (elfNN_aarch64_howto_table[i].name != NULL | |
1532 | && strcasecmp (elfNN_aarch64_howto_table[i].name, r_name) == 0) | |
1533 | return &elfNN_aarch64_howto_table[i]; | |
a06ea964 NC |
1534 | |
1535 | return NULL; | |
1536 | } | |
1537 | ||
cec5225b YZ |
1538 | #define TARGET_LITTLE_SYM bfd_elfNN_littleaarch64_vec |
1539 | #define TARGET_LITTLE_NAME "elfNN-littleaarch64" | |
1540 | #define TARGET_BIG_SYM bfd_elfNN_bigaarch64_vec | |
1541 | #define TARGET_BIG_NAME "elfNN-bigaarch64" | |
a06ea964 | 1542 | |
a06ea964 NC |
1543 | /* The linker script knows the section names for placement. |
1544 | The entry_names are used to do simple name mangling on the stubs. | |
1545 | Given a function name, and its type, the stub can be found. The | |
1546 | name can be changed. The only requirement is the %s be present. */ | |
1547 | #define STUB_ENTRY_NAME "__%s_veneer" | |
1548 | ||
1549 | /* The name of the dynamic interpreter. This is put in the .interp | |
1550 | section. */ | |
1551 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
1552 | ||
1553 | #define AARCH64_MAX_FWD_BRANCH_OFFSET \ | |
1554 | (((1 << 25) - 1) << 2) | |
1555 | #define AARCH64_MAX_BWD_BRANCH_OFFSET \ | |
1556 | (-((1 << 25) << 2)) | |
1557 | ||
1558 | #define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1) | |
1559 | #define AARCH64_MIN_ADRP_IMM (-(1 << 20)) | |
1560 | ||
1561 | static int | |
1562 | aarch64_valid_for_adrp_p (bfd_vma value, bfd_vma place) | |
1563 | { | |
1564 | bfd_signed_vma offset = (bfd_signed_vma) (PG (value) - PG (place)) >> 12; | |
1565 | return offset <= AARCH64_MAX_ADRP_IMM && offset >= AARCH64_MIN_ADRP_IMM; | |
1566 | } | |
1567 | ||
1568 | static int | |
1569 | aarch64_valid_branch_p (bfd_vma value, bfd_vma place) | |
1570 | { | |
1571 | bfd_signed_vma offset = (bfd_signed_vma) (value - place); | |
1572 | return (offset <= AARCH64_MAX_FWD_BRANCH_OFFSET | |
1573 | && offset >= AARCH64_MAX_BWD_BRANCH_OFFSET); | |
1574 | } | |
1575 | ||
1576 | static const uint32_t aarch64_adrp_branch_stub [] = | |
1577 | { | |
1578 | 0x90000010, /* adrp ip0, X */ | |
1579 | /* R_AARCH64_ADR_HI21_PCREL(X) */ | |
1580 | 0x91000210, /* add ip0, ip0, :lo12:X */ | |
1581 | /* R_AARCH64_ADD_ABS_LO12_NC(X) */ | |
1582 | 0xd61f0200, /* br ip0 */ | |
1583 | }; | |
1584 | ||
1585 | static const uint32_t aarch64_long_branch_stub[] = | |
1586 | { | |
cec5225b | 1587 | #if ARCH_SIZE == 64 |
a06ea964 | 1588 | 0x58000090, /* ldr ip0, 1f */ |
cec5225b YZ |
1589 | #else |
1590 | 0x18000090, /* ldr wip0, 1f */ | |
1591 | #endif | |
a06ea964 NC |
1592 | 0x10000011, /* adr ip1, #0 */ |
1593 | 0x8b110210, /* add ip0, ip0, ip1 */ | |
1594 | 0xd61f0200, /* br ip0 */ | |
cec5225b YZ |
1595 | 0x00000000, /* 1: .xword or .word |
1596 | R_AARCH64_PRELNN(X) + 12 | |
a06ea964 NC |
1597 | */ |
1598 | 0x00000000, | |
1599 | }; | |
1600 | ||
1601 | /* Section name for stubs is the associated section name plus this | |
1602 | string. */ | |
1603 | #define STUB_SUFFIX ".stub" | |
1604 | ||
cec5225b | 1605 | enum elf_aarch64_stub_type |
a06ea964 NC |
1606 | { |
1607 | aarch64_stub_none, | |
1608 | aarch64_stub_adrp_branch, | |
1609 | aarch64_stub_long_branch, | |
1610 | }; | |
1611 | ||
cec5225b | 1612 | struct elf_aarch64_stub_hash_entry |
a06ea964 NC |
1613 | { |
1614 | /* Base hash table entry structure. */ | |
1615 | struct bfd_hash_entry root; | |
1616 | ||
1617 | /* The stub section. */ | |
1618 | asection *stub_sec; | |
1619 | ||
1620 | /* Offset within stub_sec of the beginning of this stub. */ | |
1621 | bfd_vma stub_offset; | |
1622 | ||
1623 | /* Given the symbol's value and its section we can determine its final | |
1624 | value when building the stubs (so the stub knows where to jump). */ | |
1625 | bfd_vma target_value; | |
1626 | asection *target_section; | |
1627 | ||
cec5225b | 1628 | enum elf_aarch64_stub_type stub_type; |
a06ea964 NC |
1629 | |
1630 | /* The symbol table entry, if any, that this was derived from. */ | |
cec5225b | 1631 | struct elf_aarch64_link_hash_entry *h; |
a06ea964 NC |
1632 | |
1633 | /* Destination symbol type */ | |
1634 | unsigned char st_type; | |
1635 | ||
1636 | /* Where this stub is being called from, or, in the case of combined | |
1637 | stub sections, the first input section in the group. */ | |
1638 | asection *id_sec; | |
1639 | ||
1640 | /* The name for the local symbol at the start of this stub. The | |
1641 | stub name in the hash table has to be unique; this does not, so | |
1642 | it can be friendlier. */ | |
1643 | char *output_name; | |
1644 | }; | |
1645 | ||
1646 | /* Used to build a map of a section. This is required for mixed-endian | |
1647 | code/data. */ | |
1648 | ||
cec5225b | 1649 | typedef struct elf_elf_section_map |
a06ea964 NC |
1650 | { |
1651 | bfd_vma vma; | |
1652 | char type; | |
1653 | } | |
cec5225b | 1654 | elf_aarch64_section_map; |
a06ea964 NC |
1655 | |
1656 | ||
1657 | typedef struct _aarch64_elf_section_data | |
1658 | { | |
1659 | struct bfd_elf_section_data elf; | |
1660 | unsigned int mapcount; | |
1661 | unsigned int mapsize; | |
cec5225b | 1662 | elf_aarch64_section_map *map; |
a06ea964 NC |
1663 | } |
1664 | _aarch64_elf_section_data; | |
1665 | ||
cec5225b | 1666 | #define elf_aarch64_section_data(sec) \ |
a06ea964 NC |
1667 | ((_aarch64_elf_section_data *) elf_section_data (sec)) |
1668 | ||
1669 | /* The size of the thread control block. */ | |
1670 | #define TCB_SIZE 16 | |
1671 | ||
1672 | struct elf_aarch64_local_symbol | |
1673 | { | |
1674 | unsigned int got_type; | |
1675 | bfd_signed_vma got_refcount; | |
1676 | bfd_vma got_offset; | |
1677 | ||
1678 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The | |
1679 | offset is from the end of the jump table and reserved entries | |
1680 | within the PLTGOT. | |
1681 | ||
1682 | The magic value (bfd_vma) -1 indicates that an offset has not be | |
1683 | allocated. */ | |
1684 | bfd_vma tlsdesc_got_jump_table_offset; | |
1685 | }; | |
1686 | ||
1687 | struct elf_aarch64_obj_tdata | |
1688 | { | |
1689 | struct elf_obj_tdata root; | |
1690 | ||
1691 | /* local symbol descriptors */ | |
1692 | struct elf_aarch64_local_symbol *locals; | |
1693 | ||
1694 | /* Zero to warn when linking objects with incompatible enum sizes. */ | |
1695 | int no_enum_size_warning; | |
1696 | ||
1697 | /* Zero to warn when linking objects with incompatible wchar_t sizes. */ | |
1698 | int no_wchar_size_warning; | |
1699 | }; | |
1700 | ||
1701 | #define elf_aarch64_tdata(bfd) \ | |
1702 | ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any) | |
1703 | ||
cec5225b | 1704 | #define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals) |
a06ea964 NC |
1705 | |
1706 | #define is_aarch64_elf(bfd) \ | |
1707 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
1708 | && elf_tdata (bfd) != NULL \ | |
1709 | && elf_object_id (bfd) == AARCH64_ELF_DATA) | |
1710 | ||
1711 | static bfd_boolean | |
cec5225b | 1712 | elfNN_aarch64_mkobject (bfd *abfd) |
a06ea964 NC |
1713 | { |
1714 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_aarch64_obj_tdata), | |
1715 | AARCH64_ELF_DATA); | |
1716 | } | |
1717 | ||
cec5225b YZ |
1718 | #define elf_aarch64_hash_entry(ent) \ |
1719 | ((struct elf_aarch64_link_hash_entry *)(ent)) | |
a06ea964 NC |
1720 | |
1721 | #define GOT_UNKNOWN 0 | |
1722 | #define GOT_NORMAL 1 | |
1723 | #define GOT_TLS_GD 2 | |
1724 | #define GOT_TLS_IE 4 | |
1725 | #define GOT_TLSDESC_GD 8 | |
1726 | ||
1727 | #define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD)) | |
1728 | ||
1729 | /* AArch64 ELF linker hash entry. */ | |
cec5225b | 1730 | struct elf_aarch64_link_hash_entry |
a06ea964 NC |
1731 | { |
1732 | struct elf_link_hash_entry root; | |
1733 | ||
1734 | /* Track dynamic relocs copied for this symbol. */ | |
1735 | struct elf_dyn_relocs *dyn_relocs; | |
1736 | ||
a06ea964 NC |
1737 | /* Since PLT entries have variable size, we need to record the |
1738 | index into .got.plt instead of recomputing it from the PLT | |
1739 | offset. */ | |
1740 | bfd_signed_vma plt_got_offset; | |
1741 | ||
1742 | /* Bit mask representing the type of GOT entry(s) if any required by | |
1743 | this symbol. */ | |
1744 | unsigned int got_type; | |
1745 | ||
1746 | /* A pointer to the most recently used stub hash entry against this | |
1747 | symbol. */ | |
cec5225b | 1748 | struct elf_aarch64_stub_hash_entry *stub_cache; |
a06ea964 NC |
1749 | |
1750 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset | |
1751 | is from the end of the jump table and reserved entries within the PLTGOT. | |
1752 | ||
1753 | The magic value (bfd_vma) -1 indicates that an offset has not | |
1754 | be allocated. */ | |
1755 | bfd_vma tlsdesc_got_jump_table_offset; | |
1756 | }; | |
1757 | ||
1758 | static unsigned int | |
cec5225b | 1759 | elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry *h, |
a06ea964 NC |
1760 | bfd *abfd, |
1761 | unsigned long r_symndx) | |
1762 | { | |
1763 | if (h) | |
cec5225b | 1764 | return elf_aarch64_hash_entry (h)->got_type; |
a06ea964 | 1765 | |
cec5225b | 1766 | if (! elf_aarch64_locals (abfd)) |
a06ea964 NC |
1767 | return GOT_UNKNOWN; |
1768 | ||
cec5225b | 1769 | return elf_aarch64_locals (abfd)[r_symndx].got_type; |
a06ea964 NC |
1770 | } |
1771 | ||
a06ea964 | 1772 | /* Get the AArch64 elf linker hash table from a link_info structure. */ |
cec5225b YZ |
1773 | #define elf_aarch64_hash_table(info) \ |
1774 | ((struct elf_aarch64_link_hash_table *) ((info)->hash)) | |
a06ea964 NC |
1775 | |
1776 | #define aarch64_stub_hash_lookup(table, string, create, copy) \ | |
cec5225b | 1777 | ((struct elf_aarch64_stub_hash_entry *) \ |
a06ea964 NC |
1778 | bfd_hash_lookup ((table), (string), (create), (copy))) |
1779 | ||
1780 | /* AArch64 ELF linker hash table. */ | |
cec5225b | 1781 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
1782 | { |
1783 | /* The main hash table. */ | |
1784 | struct elf_link_hash_table root; | |
1785 | ||
1786 | /* Nonzero to force PIC branch veneers. */ | |
1787 | int pic_veneer; | |
1788 | ||
1789 | /* The number of bytes in the initial entry in the PLT. */ | |
1790 | bfd_size_type plt_header_size; | |
1791 | ||
1792 | /* The number of bytes in the subsequent PLT etries. */ | |
1793 | bfd_size_type plt_entry_size; | |
1794 | ||
1795 | /* Short-cuts to get to dynamic linker sections. */ | |
1796 | asection *sdynbss; | |
1797 | asection *srelbss; | |
1798 | ||
1799 | /* Small local sym cache. */ | |
1800 | struct sym_cache sym_cache; | |
1801 | ||
1802 | /* For convenience in allocate_dynrelocs. */ | |
1803 | bfd *obfd; | |
1804 | ||
1805 | /* The amount of space used by the reserved portion of the sgotplt | |
1806 | section, plus whatever space is used by the jump slots. */ | |
1807 | bfd_vma sgotplt_jump_table_size; | |
1808 | ||
1809 | /* The stub hash table. */ | |
1810 | struct bfd_hash_table stub_hash_table; | |
1811 | ||
1812 | /* Linker stub bfd. */ | |
1813 | bfd *stub_bfd; | |
1814 | ||
1815 | /* Linker call-backs. */ | |
1816 | asection *(*add_stub_section) (const char *, asection *); | |
1817 | void (*layout_sections_again) (void); | |
1818 | ||
1819 | /* Array to keep track of which stub sections have been created, and | |
1820 | information on stub grouping. */ | |
1821 | struct map_stub | |
1822 | { | |
1823 | /* This is the section to which stubs in the group will be | |
1824 | attached. */ | |
1825 | asection *link_sec; | |
1826 | /* The stub section. */ | |
1827 | asection *stub_sec; | |
1828 | } *stub_group; | |
1829 | ||
cec5225b | 1830 | /* Assorted information used by elfNN_aarch64_size_stubs. */ |
a06ea964 NC |
1831 | unsigned int bfd_count; |
1832 | int top_index; | |
1833 | asection **input_list; | |
1834 | ||
1835 | /* The offset into splt of the PLT entry for the TLS descriptor | |
1836 | resolver. Special values are 0, if not necessary (or not found | |
1837 | to be necessary yet), and -1 if needed but not determined | |
1838 | yet. */ | |
1839 | bfd_vma tlsdesc_plt; | |
1840 | ||
1841 | /* The GOT offset for the lazy trampoline. Communicated to the | |
1842 | loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1 | |
1843 | indicates an offset is not allocated. */ | |
1844 | bfd_vma dt_tlsdesc_got; | |
1845 | }; | |
1846 | ||
a06ea964 NC |
1847 | /* Create an entry in an AArch64 ELF linker hash table. */ |
1848 | ||
1849 | static struct bfd_hash_entry * | |
cec5225b | 1850 | elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry, |
a06ea964 NC |
1851 | struct bfd_hash_table *table, |
1852 | const char *string) | |
1853 | { | |
cec5225b YZ |
1854 | struct elf_aarch64_link_hash_entry *ret = |
1855 | (struct elf_aarch64_link_hash_entry *) entry; | |
a06ea964 NC |
1856 | |
1857 | /* Allocate the structure if it has not already been allocated by a | |
1858 | subclass. */ | |
1859 | if (ret == NULL) | |
1860 | ret = bfd_hash_allocate (table, | |
cec5225b | 1861 | sizeof (struct elf_aarch64_link_hash_entry)); |
a06ea964 NC |
1862 | if (ret == NULL) |
1863 | return (struct bfd_hash_entry *) ret; | |
1864 | ||
1865 | /* Call the allocation method of the superclass. */ | |
cec5225b | 1866 | ret = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
1867 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
1868 | table, string)); | |
1869 | if (ret != NULL) | |
1870 | { | |
1871 | ret->dyn_relocs = NULL; | |
a06ea964 NC |
1872 | ret->got_type = GOT_UNKNOWN; |
1873 | ret->plt_got_offset = (bfd_vma) - 1; | |
1874 | ret->stub_cache = NULL; | |
1875 | ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
1876 | } | |
1877 | ||
1878 | return (struct bfd_hash_entry *) ret; | |
1879 | } | |
1880 | ||
1881 | /* Initialize an entry in the stub hash table. */ | |
1882 | ||
1883 | static struct bfd_hash_entry * | |
1884 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
1885 | struct bfd_hash_table *table, const char *string) | |
1886 | { | |
1887 | /* Allocate the structure if it has not already been allocated by a | |
1888 | subclass. */ | |
1889 | if (entry == NULL) | |
1890 | { | |
1891 | entry = bfd_hash_allocate (table, | |
1892 | sizeof (struct | |
cec5225b | 1893 | elf_aarch64_stub_hash_entry)); |
a06ea964 NC |
1894 | if (entry == NULL) |
1895 | return entry; | |
1896 | } | |
1897 | ||
1898 | /* Call the allocation method of the superclass. */ | |
1899 | entry = bfd_hash_newfunc (entry, table, string); | |
1900 | if (entry != NULL) | |
1901 | { | |
cec5225b | 1902 | struct elf_aarch64_stub_hash_entry *eh; |
a06ea964 NC |
1903 | |
1904 | /* Initialize the local fields. */ | |
cec5225b | 1905 | eh = (struct elf_aarch64_stub_hash_entry *) entry; |
a06ea964 NC |
1906 | eh->stub_sec = NULL; |
1907 | eh->stub_offset = 0; | |
1908 | eh->target_value = 0; | |
1909 | eh->target_section = NULL; | |
1910 | eh->stub_type = aarch64_stub_none; | |
1911 | eh->h = NULL; | |
1912 | eh->id_sec = NULL; | |
1913 | } | |
1914 | ||
1915 | return entry; | |
1916 | } | |
1917 | ||
1918 | ||
1919 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
1920 | ||
1921 | static void | |
cec5225b | 1922 | elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info, |
a06ea964 NC |
1923 | struct elf_link_hash_entry *dir, |
1924 | struct elf_link_hash_entry *ind) | |
1925 | { | |
cec5225b | 1926 | struct elf_aarch64_link_hash_entry *edir, *eind; |
a06ea964 | 1927 | |
cec5225b YZ |
1928 | edir = (struct elf_aarch64_link_hash_entry *) dir; |
1929 | eind = (struct elf_aarch64_link_hash_entry *) ind; | |
a06ea964 NC |
1930 | |
1931 | if (eind->dyn_relocs != NULL) | |
1932 | { | |
1933 | if (edir->dyn_relocs != NULL) | |
1934 | { | |
1935 | struct elf_dyn_relocs **pp; | |
1936 | struct elf_dyn_relocs *p; | |
1937 | ||
1938 | /* Add reloc counts against the indirect sym to the direct sym | |
1939 | list. Merge any entries against the same section. */ | |
1940 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) | |
1941 | { | |
1942 | struct elf_dyn_relocs *q; | |
1943 | ||
1944 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
1945 | if (q->sec == p->sec) | |
1946 | { | |
1947 | q->pc_count += p->pc_count; | |
1948 | q->count += p->count; | |
1949 | *pp = p->next; | |
1950 | break; | |
1951 | } | |
1952 | if (q == NULL) | |
1953 | pp = &p->next; | |
1954 | } | |
1955 | *pp = edir->dyn_relocs; | |
1956 | } | |
1957 | ||
1958 | edir->dyn_relocs = eind->dyn_relocs; | |
1959 | eind->dyn_relocs = NULL; | |
1960 | } | |
1961 | ||
a06ea964 NC |
1962 | if (ind->root.type == bfd_link_hash_indirect) |
1963 | { | |
1964 | /* Copy over PLT info. */ | |
1965 | if (dir->got.refcount <= 0) | |
1966 | { | |
1967 | edir->got_type = eind->got_type; | |
1968 | eind->got_type = GOT_UNKNOWN; | |
1969 | } | |
1970 | } | |
1971 | ||
1972 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
1973 | } | |
1974 | ||
1975 | /* Create an AArch64 elf linker hash table. */ | |
1976 | ||
1977 | static struct bfd_link_hash_table * | |
cec5225b | 1978 | elfNN_aarch64_link_hash_table_create (bfd *abfd) |
a06ea964 | 1979 | { |
cec5225b YZ |
1980 | struct elf_aarch64_link_hash_table *ret; |
1981 | bfd_size_type amt = sizeof (struct elf_aarch64_link_hash_table); | |
a06ea964 | 1982 | |
7bf52ea2 | 1983 | ret = bfd_zmalloc (amt); |
a06ea964 NC |
1984 | if (ret == NULL) |
1985 | return NULL; | |
1986 | ||
1987 | if (!_bfd_elf_link_hash_table_init | |
cec5225b YZ |
1988 | (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc, |
1989 | sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA)) | |
a06ea964 NC |
1990 | { |
1991 | free (ret); | |
1992 | return NULL; | |
1993 | } | |
1994 | ||
a06ea964 NC |
1995 | ret->plt_header_size = PLT_ENTRY_SIZE; |
1996 | ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE; | |
a06ea964 | 1997 | ret->obfd = abfd; |
a06ea964 NC |
1998 | ret->dt_tlsdesc_got = (bfd_vma) - 1; |
1999 | ||
2000 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc, | |
cec5225b | 2001 | sizeof (struct elf_aarch64_stub_hash_entry))) |
a06ea964 NC |
2002 | { |
2003 | free (ret); | |
2004 | return NULL; | |
2005 | } | |
2006 | ||
2007 | return &ret->root.root; | |
2008 | } | |
2009 | ||
2010 | /* Free the derived linker hash table. */ | |
2011 | ||
2012 | static void | |
cec5225b | 2013 | elfNN_aarch64_hash_table_free (struct bfd_link_hash_table *hash) |
a06ea964 | 2014 | { |
cec5225b YZ |
2015 | struct elf_aarch64_link_hash_table *ret |
2016 | = (struct elf_aarch64_link_hash_table *) hash; | |
a06ea964 NC |
2017 | |
2018 | bfd_hash_table_free (&ret->stub_hash_table); | |
9f7c3e5e | 2019 | _bfd_elf_link_hash_table_free (hash); |
a06ea964 NC |
2020 | } |
2021 | ||
a06ea964 NC |
2022 | static bfd_boolean |
2023 | aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section, | |
2024 | bfd_vma offset, bfd_vma value) | |
2025 | { | |
2026 | reloc_howto_type *howto; | |
2027 | bfd_vma place; | |
2028 | ||
cec5225b | 2029 | howto = elfNN_aarch64_howto_from_type (r_type); |
a06ea964 NC |
2030 | place = (input_section->output_section->vma + input_section->output_offset |
2031 | + offset); | |
caed7120 YZ |
2032 | |
2033 | r_type = elfNN_aarch64_bfd_reloc_from_type (r_type); | |
2034 | value = _bfd_aarch64_elf_resolve_relocation (r_type, place, value, 0, FALSE); | |
2035 | return _bfd_aarch64_elf_put_addend (input_bfd, | |
2036 | input_section->contents + offset, r_type, | |
2037 | howto, value); | |
a06ea964 NC |
2038 | } |
2039 | ||
cec5225b | 2040 | static enum elf_aarch64_stub_type |
a06ea964 NC |
2041 | aarch64_select_branch_stub (bfd_vma value, bfd_vma place) |
2042 | { | |
2043 | if (aarch64_valid_for_adrp_p (value, place)) | |
2044 | return aarch64_stub_adrp_branch; | |
2045 | return aarch64_stub_long_branch; | |
2046 | } | |
2047 | ||
2048 | /* Determine the type of stub needed, if any, for a call. */ | |
2049 | ||
cec5225b | 2050 | static enum elf_aarch64_stub_type |
a06ea964 NC |
2051 | aarch64_type_of_stub (struct bfd_link_info *info, |
2052 | asection *input_sec, | |
2053 | const Elf_Internal_Rela *rel, | |
2054 | unsigned char st_type, | |
cec5225b | 2055 | struct elf_aarch64_link_hash_entry *hash, |
a06ea964 NC |
2056 | bfd_vma destination) |
2057 | { | |
2058 | bfd_vma location; | |
2059 | bfd_signed_vma branch_offset; | |
2060 | unsigned int r_type; | |
cec5225b YZ |
2061 | struct elf_aarch64_link_hash_table *globals; |
2062 | enum elf_aarch64_stub_type stub_type = aarch64_stub_none; | |
a06ea964 NC |
2063 | bfd_boolean via_plt_p; |
2064 | ||
2065 | if (st_type != STT_FUNC) | |
2066 | return stub_type; | |
2067 | ||
cec5225b | 2068 | globals = elf_aarch64_hash_table (info); |
a06ea964 NC |
2069 | via_plt_p = (globals->root.splt != NULL && hash != NULL |
2070 | && hash->root.plt.offset != (bfd_vma) - 1); | |
2071 | ||
2072 | if (via_plt_p) | |
2073 | return stub_type; | |
2074 | ||
2075 | /* Determine where the call point is. */ | |
2076 | location = (input_sec->output_offset | |
2077 | + input_sec->output_section->vma + rel->r_offset); | |
2078 | ||
2079 | branch_offset = (bfd_signed_vma) (destination - location); | |
2080 | ||
cec5225b | 2081 | r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
2082 | |
2083 | /* We don't want to redirect any old unconditional jump in this way, | |
2084 | only one which is being used for a sibcall, where it is | |
2085 | acceptable for the IP0 and IP1 registers to be clobbered. */ | |
a6bb11b2 | 2086 | if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26)) |
a06ea964 NC |
2087 | && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET |
2088 | || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET)) | |
2089 | { | |
2090 | stub_type = aarch64_stub_long_branch; | |
2091 | } | |
2092 | ||
2093 | return stub_type; | |
2094 | } | |
2095 | ||
2096 | /* Build a name for an entry in the stub hash table. */ | |
2097 | ||
2098 | static char * | |
cec5225b | 2099 | elfNN_aarch64_stub_name (const asection *input_section, |
a06ea964 | 2100 | const asection *sym_sec, |
cec5225b | 2101 | const struct elf_aarch64_link_hash_entry *hash, |
a06ea964 NC |
2102 | const Elf_Internal_Rela *rel) |
2103 | { | |
2104 | char *stub_name; | |
2105 | bfd_size_type len; | |
2106 | ||
2107 | if (hash) | |
2108 | { | |
2109 | len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1; | |
2110 | stub_name = bfd_malloc (len); | |
2111 | if (stub_name != NULL) | |
2112 | snprintf (stub_name, len, "%08x_%s+%" BFD_VMA_FMT "x", | |
2113 | (unsigned int) input_section->id, | |
2114 | hash->root.root.root.string, | |
2115 | rel->r_addend); | |
2116 | } | |
2117 | else | |
2118 | { | |
2119 | len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1; | |
2120 | stub_name = bfd_malloc (len); | |
2121 | if (stub_name != NULL) | |
2122 | snprintf (stub_name, len, "%08x_%x:%x+%" BFD_VMA_FMT "x", | |
2123 | (unsigned int) input_section->id, | |
2124 | (unsigned int) sym_sec->id, | |
cec5225b | 2125 | (unsigned int) ELFNN_R_SYM (rel->r_info), |
a06ea964 NC |
2126 | rel->r_addend); |
2127 | } | |
2128 | ||
2129 | return stub_name; | |
2130 | } | |
2131 | ||
2132 | /* Look up an entry in the stub hash. Stub entries are cached because | |
2133 | creating the stub name takes a bit of time. */ | |
2134 | ||
cec5225b YZ |
2135 | static struct elf_aarch64_stub_hash_entry * |
2136 | elfNN_aarch64_get_stub_entry (const asection *input_section, | |
a06ea964 NC |
2137 | const asection *sym_sec, |
2138 | struct elf_link_hash_entry *hash, | |
2139 | const Elf_Internal_Rela *rel, | |
cec5225b | 2140 | struct elf_aarch64_link_hash_table *htab) |
a06ea964 | 2141 | { |
cec5225b YZ |
2142 | struct elf_aarch64_stub_hash_entry *stub_entry; |
2143 | struct elf_aarch64_link_hash_entry *h = | |
2144 | (struct elf_aarch64_link_hash_entry *) hash; | |
a06ea964 NC |
2145 | const asection *id_sec; |
2146 | ||
2147 | if ((input_section->flags & SEC_CODE) == 0) | |
2148 | return NULL; | |
2149 | ||
2150 | /* If this input section is part of a group of sections sharing one | |
2151 | stub section, then use the id of the first section in the group. | |
2152 | Stub names need to include a section id, as there may well be | |
2153 | more than one stub used to reach say, printf, and we need to | |
2154 | distinguish between them. */ | |
2155 | id_sec = htab->stub_group[input_section->id].link_sec; | |
2156 | ||
2157 | if (h != NULL && h->stub_cache != NULL | |
2158 | && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec) | |
2159 | { | |
2160 | stub_entry = h->stub_cache; | |
2161 | } | |
2162 | else | |
2163 | { | |
2164 | char *stub_name; | |
2165 | ||
cec5225b | 2166 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel); |
a06ea964 NC |
2167 | if (stub_name == NULL) |
2168 | return NULL; | |
2169 | ||
2170 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
2171 | stub_name, FALSE, FALSE); | |
2172 | if (h != NULL) | |
2173 | h->stub_cache = stub_entry; | |
2174 | ||
2175 | free (stub_name); | |
2176 | } | |
2177 | ||
2178 | return stub_entry; | |
2179 | } | |
2180 | ||
2181 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
2182 | stub entry are initialised. */ | |
2183 | ||
cec5225b YZ |
2184 | static struct elf_aarch64_stub_hash_entry * |
2185 | elfNN_aarch64_add_stub (const char *stub_name, | |
a06ea964 | 2186 | asection *section, |
cec5225b | 2187 | struct elf_aarch64_link_hash_table *htab) |
a06ea964 NC |
2188 | { |
2189 | asection *link_sec; | |
2190 | asection *stub_sec; | |
cec5225b | 2191 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
2192 | |
2193 | link_sec = htab->stub_group[section->id].link_sec; | |
2194 | stub_sec = htab->stub_group[section->id].stub_sec; | |
2195 | if (stub_sec == NULL) | |
2196 | { | |
2197 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
2198 | if (stub_sec == NULL) | |
2199 | { | |
2200 | size_t namelen; | |
2201 | bfd_size_type len; | |
2202 | char *s_name; | |
2203 | ||
2204 | namelen = strlen (link_sec->name); | |
2205 | len = namelen + sizeof (STUB_SUFFIX); | |
2206 | s_name = bfd_alloc (htab->stub_bfd, len); | |
2207 | if (s_name == NULL) | |
2208 | return NULL; | |
2209 | ||
2210 | memcpy (s_name, link_sec->name, namelen); | |
2211 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
2212 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); | |
2213 | if (stub_sec == NULL) | |
2214 | return NULL; | |
2215 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
2216 | } | |
2217 | htab->stub_group[section->id].stub_sec = stub_sec; | |
2218 | } | |
2219 | ||
2220 | /* Enter this entry into the linker stub hash table. */ | |
2221 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
2222 | TRUE, FALSE); | |
2223 | if (stub_entry == NULL) | |
2224 | { | |
2225 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), | |
2226 | section->owner, stub_name); | |
2227 | return NULL; | |
2228 | } | |
2229 | ||
2230 | stub_entry->stub_sec = stub_sec; | |
2231 | stub_entry->stub_offset = 0; | |
2232 | stub_entry->id_sec = link_sec; | |
2233 | ||
2234 | return stub_entry; | |
2235 | } | |
2236 | ||
2237 | static bfd_boolean | |
2238 | aarch64_build_one_stub (struct bfd_hash_entry *gen_entry, | |
2239 | void *in_arg ATTRIBUTE_UNUSED) | |
2240 | { | |
cec5225b | 2241 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
2242 | asection *stub_sec; |
2243 | bfd *stub_bfd; | |
2244 | bfd_byte *loc; | |
2245 | bfd_vma sym_value; | |
2246 | unsigned int template_size; | |
2247 | const uint32_t *template; | |
2248 | unsigned int i; | |
2249 | ||
2250 | /* Massage our args to the form they really have. */ | |
cec5225b | 2251 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
2252 | |
2253 | stub_sec = stub_entry->stub_sec; | |
2254 | ||
2255 | /* Make a note of the offset within the stubs for this entry. */ | |
2256 | stub_entry->stub_offset = stub_sec->size; | |
2257 | loc = stub_sec->contents + stub_entry->stub_offset; | |
2258 | ||
2259 | stub_bfd = stub_sec->owner; | |
2260 | ||
2261 | /* This is the address of the stub destination. */ | |
2262 | sym_value = (stub_entry->target_value | |
2263 | + stub_entry->target_section->output_offset | |
2264 | + stub_entry->target_section->output_section->vma); | |
2265 | ||
2266 | if (stub_entry->stub_type == aarch64_stub_long_branch) | |
2267 | { | |
2268 | bfd_vma place = (stub_entry->stub_offset + stub_sec->output_section->vma | |
2269 | + stub_sec->output_offset); | |
2270 | ||
2271 | /* See if we can relax the stub. */ | |
2272 | if (aarch64_valid_for_adrp_p (sym_value, place)) | |
2273 | stub_entry->stub_type = aarch64_select_branch_stub (sym_value, place); | |
2274 | } | |
2275 | ||
2276 | switch (stub_entry->stub_type) | |
2277 | { | |
2278 | case aarch64_stub_adrp_branch: | |
2279 | template = aarch64_adrp_branch_stub; | |
2280 | template_size = sizeof (aarch64_adrp_branch_stub); | |
2281 | break; | |
2282 | case aarch64_stub_long_branch: | |
2283 | template = aarch64_long_branch_stub; | |
2284 | template_size = sizeof (aarch64_long_branch_stub); | |
2285 | break; | |
2286 | default: | |
2287 | BFD_FAIL (); | |
2288 | return FALSE; | |
2289 | } | |
2290 | ||
2291 | for (i = 0; i < (template_size / sizeof template[0]); i++) | |
2292 | { | |
2293 | bfd_putl32 (template[i], loc); | |
2294 | loc += 4; | |
2295 | } | |
2296 | ||
2297 | template_size = (template_size + 7) & ~7; | |
2298 | stub_sec->size += template_size; | |
2299 | ||
2300 | switch (stub_entry->stub_type) | |
2301 | { | |
2302 | case aarch64_stub_adrp_branch: | |
a6bb11b2 | 2303 | if (aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21), stub_bfd, stub_sec, |
a06ea964 NC |
2304 | stub_entry->stub_offset, sym_value)) |
2305 | /* The stub would not have been relaxed if the offset was out | |
2306 | of range. */ | |
2307 | BFD_FAIL (); | |
2308 | ||
2309 | _bfd_final_link_relocate | |
a6bb11b2 | 2310 | (elfNN_aarch64_howto_from_type (AARCH64_R (ADD_ABS_LO12_NC)), |
a06ea964 NC |
2311 | stub_bfd, |
2312 | stub_sec, | |
2313 | stub_sec->contents, | |
2314 | stub_entry->stub_offset + 4, | |
2315 | sym_value, | |
2316 | 0); | |
2317 | break; | |
2318 | ||
2319 | case aarch64_stub_long_branch: | |
2320 | /* We want the value relative to the address 12 bytes back from the | |
2321 | value itself. */ | |
cec5225b | 2322 | _bfd_final_link_relocate (elfNN_aarch64_howto_from_type |
a6bb11b2 | 2323 | (AARCH64_R (PRELNN)), stub_bfd, stub_sec, |
a06ea964 NC |
2324 | stub_sec->contents, |
2325 | stub_entry->stub_offset + 16, | |
2326 | sym_value + 12, 0); | |
2327 | break; | |
2328 | default: | |
2329 | break; | |
2330 | } | |
2331 | ||
2332 | return TRUE; | |
2333 | } | |
2334 | ||
2335 | /* As above, but don't actually build the stub. Just bump offset so | |
2336 | we know stub section sizes. */ | |
2337 | ||
2338 | static bfd_boolean | |
2339 | aarch64_size_one_stub (struct bfd_hash_entry *gen_entry, | |
2340 | void *in_arg ATTRIBUTE_UNUSED) | |
2341 | { | |
cec5225b | 2342 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
2343 | int size; |
2344 | ||
2345 | /* Massage our args to the form they really have. */ | |
cec5225b | 2346 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
2347 | |
2348 | switch (stub_entry->stub_type) | |
2349 | { | |
2350 | case aarch64_stub_adrp_branch: | |
2351 | size = sizeof (aarch64_adrp_branch_stub); | |
2352 | break; | |
2353 | case aarch64_stub_long_branch: | |
2354 | size = sizeof (aarch64_long_branch_stub); | |
2355 | break; | |
2356 | default: | |
2357 | BFD_FAIL (); | |
2358 | return FALSE; | |
2359 | break; | |
2360 | } | |
2361 | ||
2362 | size = (size + 7) & ~7; | |
2363 | stub_entry->stub_sec->size += size; | |
2364 | return TRUE; | |
2365 | } | |
2366 | ||
2367 | /* External entry points for sizing and building linker stubs. */ | |
2368 | ||
2369 | /* Set up various things so that we can make a list of input sections | |
2370 | for each output section included in the link. Returns -1 on error, | |
2371 | 0 when no stubs will be needed, and 1 on success. */ | |
2372 | ||
2373 | int | |
cec5225b | 2374 | elfNN_aarch64_setup_section_lists (bfd *output_bfd, |
a06ea964 NC |
2375 | struct bfd_link_info *info) |
2376 | { | |
2377 | bfd *input_bfd; | |
2378 | unsigned int bfd_count; | |
2379 | int top_id, top_index; | |
2380 | asection *section; | |
2381 | asection **input_list, **list; | |
2382 | bfd_size_type amt; | |
cec5225b YZ |
2383 | struct elf_aarch64_link_hash_table *htab = |
2384 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
2385 | |
2386 | if (!is_elf_hash_table (htab)) | |
2387 | return 0; | |
2388 | ||
2389 | /* Count the number of input BFDs and find the top input section id. */ | |
2390 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
2391 | input_bfd != NULL; input_bfd = input_bfd->link_next) | |
2392 | { | |
2393 | bfd_count += 1; | |
2394 | for (section = input_bfd->sections; | |
2395 | section != NULL; section = section->next) | |
2396 | { | |
2397 | if (top_id < section->id) | |
2398 | top_id = section->id; | |
2399 | } | |
2400 | } | |
2401 | htab->bfd_count = bfd_count; | |
2402 | ||
2403 | amt = sizeof (struct map_stub) * (top_id + 1); | |
2404 | htab->stub_group = bfd_zmalloc (amt); | |
2405 | if (htab->stub_group == NULL) | |
2406 | return -1; | |
2407 | ||
2408 | /* We can't use output_bfd->section_count here to find the top output | |
2409 | section index as some sections may have been removed, and | |
2410 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
2411 | for (section = output_bfd->sections, top_index = 0; | |
2412 | section != NULL; section = section->next) | |
2413 | { | |
2414 | if (top_index < section->index) | |
2415 | top_index = section->index; | |
2416 | } | |
2417 | ||
2418 | htab->top_index = top_index; | |
2419 | amt = sizeof (asection *) * (top_index + 1); | |
2420 | input_list = bfd_malloc (amt); | |
2421 | htab->input_list = input_list; | |
2422 | if (input_list == NULL) | |
2423 | return -1; | |
2424 | ||
2425 | /* For sections we aren't interested in, mark their entries with a | |
2426 | value we can check later. */ | |
2427 | list = input_list + top_index; | |
2428 | do | |
2429 | *list = bfd_abs_section_ptr; | |
2430 | while (list-- != input_list); | |
2431 | ||
2432 | for (section = output_bfd->sections; | |
2433 | section != NULL; section = section->next) | |
2434 | { | |
2435 | if ((section->flags & SEC_CODE) != 0) | |
2436 | input_list[section->index] = NULL; | |
2437 | } | |
2438 | ||
2439 | return 1; | |
2440 | } | |
2441 | ||
cec5225b | 2442 | /* Used by elfNN_aarch64_next_input_section and group_sections. */ |
a06ea964 NC |
2443 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
2444 | ||
2445 | /* The linker repeatedly calls this function for each input section, | |
2446 | in the order that input sections are linked into output sections. | |
2447 | Build lists of input sections to determine groupings between which | |
2448 | we may insert linker stubs. */ | |
2449 | ||
2450 | void | |
cec5225b | 2451 | elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec) |
a06ea964 | 2452 | { |
cec5225b YZ |
2453 | struct elf_aarch64_link_hash_table *htab = |
2454 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
2455 | |
2456 | if (isec->output_section->index <= htab->top_index) | |
2457 | { | |
2458 | asection **list = htab->input_list + isec->output_section->index; | |
2459 | ||
2460 | if (*list != bfd_abs_section_ptr) | |
2461 | { | |
2462 | /* Steal the link_sec pointer for our list. */ | |
2463 | /* This happens to make the list in reverse order, | |
2464 | which is what we want. */ | |
2465 | PREV_SEC (isec) = *list; | |
2466 | *list = isec; | |
2467 | } | |
2468 | } | |
2469 | } | |
2470 | ||
2471 | /* See whether we can group stub sections together. Grouping stub | |
2472 | sections may result in fewer stubs. More importantly, we need to | |
2473 | put all .init* and .fini* stubs at the beginning of the .init or | |
2474 | .fini output sections respectively, because glibc splits the | |
2475 | _init and _fini functions into multiple parts. Putting a stub in | |
2476 | the middle of a function is not a good idea. */ | |
2477 | ||
2478 | static void | |
cec5225b | 2479 | group_sections (struct elf_aarch64_link_hash_table *htab, |
a06ea964 NC |
2480 | bfd_size_type stub_group_size, |
2481 | bfd_boolean stubs_always_before_branch) | |
2482 | { | |
2483 | asection **list = htab->input_list + htab->top_index; | |
2484 | ||
2485 | do | |
2486 | { | |
2487 | asection *tail = *list; | |
2488 | ||
2489 | if (tail == bfd_abs_section_ptr) | |
2490 | continue; | |
2491 | ||
2492 | while (tail != NULL) | |
2493 | { | |
2494 | asection *curr; | |
2495 | asection *prev; | |
2496 | bfd_size_type total; | |
2497 | ||
2498 | curr = tail; | |
2499 | total = tail->size; | |
2500 | while ((prev = PREV_SEC (curr)) != NULL | |
2501 | && ((total += curr->output_offset - prev->output_offset) | |
2502 | < stub_group_size)) | |
2503 | curr = prev; | |
2504 | ||
2505 | /* OK, the size from the start of CURR to the end is less | |
2506 | than stub_group_size and thus can be handled by one stub | |
2507 | section. (Or the tail section is itself larger than | |
2508 | stub_group_size, in which case we may be toast.) | |
2509 | We should really be keeping track of the total size of | |
2510 | stubs added here, as stubs contribute to the final output | |
2511 | section size. */ | |
2512 | do | |
2513 | { | |
2514 | prev = PREV_SEC (tail); | |
2515 | /* Set up this stub group. */ | |
2516 | htab->stub_group[tail->id].link_sec = curr; | |
2517 | } | |
2518 | while (tail != curr && (tail = prev) != NULL); | |
2519 | ||
2520 | /* But wait, there's more! Input sections up to stub_group_size | |
2521 | bytes before the stub section can be handled by it too. */ | |
2522 | if (!stubs_always_before_branch) | |
2523 | { | |
2524 | total = 0; | |
2525 | while (prev != NULL | |
2526 | && ((total += tail->output_offset - prev->output_offset) | |
2527 | < stub_group_size)) | |
2528 | { | |
2529 | tail = prev; | |
2530 | prev = PREV_SEC (tail); | |
2531 | htab->stub_group[tail->id].link_sec = curr; | |
2532 | } | |
2533 | } | |
2534 | tail = prev; | |
2535 | } | |
2536 | } | |
2537 | while (list-- != htab->input_list); | |
2538 | ||
2539 | free (htab->input_list); | |
2540 | } | |
2541 | ||
2542 | #undef PREV_SEC | |
2543 | ||
2544 | /* Determine and set the size of the stub section for a final link. | |
2545 | ||
2546 | The basic idea here is to examine all the relocations looking for | |
2547 | PC-relative calls to a target that is unreachable with a "bl" | |
2548 | instruction. */ | |
2549 | ||
2550 | bfd_boolean | |
cec5225b | 2551 | elfNN_aarch64_size_stubs (bfd *output_bfd, |
a06ea964 NC |
2552 | bfd *stub_bfd, |
2553 | struct bfd_link_info *info, | |
2554 | bfd_signed_vma group_size, | |
2555 | asection * (*add_stub_section) (const char *, | |
2556 | asection *), | |
2557 | void (*layout_sections_again) (void)) | |
2558 | { | |
2559 | bfd_size_type stub_group_size; | |
2560 | bfd_boolean stubs_always_before_branch; | |
2561 | bfd_boolean stub_changed = 0; | |
cec5225b | 2562 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
2563 | |
2564 | /* Propagate mach to stub bfd, because it may not have been | |
2565 | finalized when we created stub_bfd. */ | |
2566 | bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd), | |
2567 | bfd_get_mach (output_bfd)); | |
2568 | ||
2569 | /* Stash our params away. */ | |
2570 | htab->stub_bfd = stub_bfd; | |
2571 | htab->add_stub_section = add_stub_section; | |
2572 | htab->layout_sections_again = layout_sections_again; | |
2573 | stubs_always_before_branch = group_size < 0; | |
2574 | if (group_size < 0) | |
2575 | stub_group_size = -group_size; | |
2576 | else | |
2577 | stub_group_size = group_size; | |
2578 | ||
2579 | if (stub_group_size == 1) | |
2580 | { | |
2581 | /* Default values. */ | |
b9eead84 | 2582 | /* AArch64 branch range is +-128MB. The value used is 1MB less. */ |
a06ea964 NC |
2583 | stub_group_size = 127 * 1024 * 1024; |
2584 | } | |
2585 | ||
2586 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
2587 | ||
2588 | while (1) | |
2589 | { | |
2590 | bfd *input_bfd; | |
2591 | unsigned int bfd_indx; | |
2592 | asection *stub_sec; | |
2593 | ||
2594 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
2595 | input_bfd != NULL; input_bfd = input_bfd->link_next, bfd_indx++) | |
2596 | { | |
2597 | Elf_Internal_Shdr *symtab_hdr; | |
2598 | asection *section; | |
2599 | Elf_Internal_Sym *local_syms = NULL; | |
2600 | ||
2601 | /* We'll need the symbol table in a second. */ | |
2602 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
2603 | if (symtab_hdr->sh_info == 0) | |
2604 | continue; | |
2605 | ||
2606 | /* Walk over each section attached to the input bfd. */ | |
2607 | for (section = input_bfd->sections; | |
2608 | section != NULL; section = section->next) | |
2609 | { | |
2610 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
2611 | ||
2612 | /* If there aren't any relocs, then there's nothing more | |
2613 | to do. */ | |
2614 | if ((section->flags & SEC_RELOC) == 0 | |
2615 | || section->reloc_count == 0 | |
2616 | || (section->flags & SEC_CODE) == 0) | |
2617 | continue; | |
2618 | ||
2619 | /* If this section is a link-once section that will be | |
2620 | discarded, then don't create any stubs. */ | |
2621 | if (section->output_section == NULL | |
2622 | || section->output_section->owner != output_bfd) | |
2623 | continue; | |
2624 | ||
2625 | /* Get the relocs. */ | |
2626 | internal_relocs | |
2627 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, | |
2628 | NULL, info->keep_memory); | |
2629 | if (internal_relocs == NULL) | |
2630 | goto error_ret_free_local; | |
2631 | ||
2632 | /* Now examine each relocation. */ | |
2633 | irela = internal_relocs; | |
2634 | irelaend = irela + section->reloc_count; | |
2635 | for (; irela < irelaend; irela++) | |
2636 | { | |
2637 | unsigned int r_type, r_indx; | |
cec5225b YZ |
2638 | enum elf_aarch64_stub_type stub_type; |
2639 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
a06ea964 NC |
2640 | asection *sym_sec; |
2641 | bfd_vma sym_value; | |
2642 | bfd_vma destination; | |
cec5225b | 2643 | struct elf_aarch64_link_hash_entry *hash; |
a06ea964 NC |
2644 | const char *sym_name; |
2645 | char *stub_name; | |
2646 | const asection *id_sec; | |
2647 | unsigned char st_type; | |
2648 | bfd_size_type len; | |
2649 | ||
cec5225b YZ |
2650 | r_type = ELFNN_R_TYPE (irela->r_info); |
2651 | r_indx = ELFNN_R_SYM (irela->r_info); | |
a06ea964 NC |
2652 | |
2653 | if (r_type >= (unsigned int) R_AARCH64_end) | |
2654 | { | |
2655 | bfd_set_error (bfd_error_bad_value); | |
2656 | error_ret_free_internal: | |
2657 | if (elf_section_data (section)->relocs == NULL) | |
2658 | free (internal_relocs); | |
2659 | goto error_ret_free_local; | |
2660 | } | |
2661 | ||
2662 | /* Only look for stubs on unconditional branch and | |
2663 | branch and link instructions. */ | |
a6bb11b2 YZ |
2664 | if (r_type != (unsigned int) AARCH64_R (CALL26) |
2665 | && r_type != (unsigned int) AARCH64_R (JUMP26)) | |
a06ea964 NC |
2666 | continue; |
2667 | ||
2668 | /* Now determine the call target, its name, value, | |
2669 | section. */ | |
2670 | sym_sec = NULL; | |
2671 | sym_value = 0; | |
2672 | destination = 0; | |
2673 | hash = NULL; | |
2674 | sym_name = NULL; | |
2675 | if (r_indx < symtab_hdr->sh_info) | |
2676 | { | |
2677 | /* It's a local symbol. */ | |
2678 | Elf_Internal_Sym *sym; | |
2679 | Elf_Internal_Shdr *hdr; | |
2680 | ||
2681 | if (local_syms == NULL) | |
2682 | { | |
2683 | local_syms | |
2684 | = (Elf_Internal_Sym *) symtab_hdr->contents; | |
2685 | if (local_syms == NULL) | |
2686 | local_syms | |
2687 | = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
2688 | symtab_hdr->sh_info, 0, | |
2689 | NULL, NULL, NULL); | |
2690 | if (local_syms == NULL) | |
2691 | goto error_ret_free_internal; | |
2692 | } | |
2693 | ||
2694 | sym = local_syms + r_indx; | |
2695 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
2696 | sym_sec = hdr->bfd_section; | |
2697 | if (!sym_sec) | |
2698 | /* This is an undefined symbol. It can never | |
2699 | be resolved. */ | |
2700 | continue; | |
2701 | ||
2702 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
2703 | sym_value = sym->st_value; | |
2704 | destination = (sym_value + irela->r_addend | |
2705 | + sym_sec->output_offset | |
2706 | + sym_sec->output_section->vma); | |
2707 | st_type = ELF_ST_TYPE (sym->st_info); | |
2708 | sym_name | |
2709 | = bfd_elf_string_from_elf_section (input_bfd, | |
2710 | symtab_hdr->sh_link, | |
2711 | sym->st_name); | |
2712 | } | |
2713 | else | |
2714 | { | |
2715 | int e_indx; | |
2716 | ||
2717 | e_indx = r_indx - symtab_hdr->sh_info; | |
cec5225b | 2718 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
2719 | elf_sym_hashes (input_bfd)[e_indx]); |
2720 | ||
2721 | while (hash->root.root.type == bfd_link_hash_indirect | |
2722 | || hash->root.root.type == bfd_link_hash_warning) | |
cec5225b | 2723 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
2724 | hash->root.root.u.i.link); |
2725 | ||
2726 | if (hash->root.root.type == bfd_link_hash_defined | |
2727 | || hash->root.root.type == bfd_link_hash_defweak) | |
2728 | { | |
cec5225b YZ |
2729 | struct elf_aarch64_link_hash_table *globals = |
2730 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
2731 | sym_sec = hash->root.root.u.def.section; |
2732 | sym_value = hash->root.root.u.def.value; | |
2733 | /* For a destination in a shared library, | |
2734 | use the PLT stub as target address to | |
2735 | decide whether a branch stub is | |
2736 | needed. */ | |
2737 | if (globals->root.splt != NULL && hash != NULL | |
2738 | && hash->root.plt.offset != (bfd_vma) - 1) | |
2739 | { | |
2740 | sym_sec = globals->root.splt; | |
2741 | sym_value = hash->root.plt.offset; | |
2742 | if (sym_sec->output_section != NULL) | |
2743 | destination = (sym_value | |
2744 | + sym_sec->output_offset | |
2745 | + | |
2746 | sym_sec->output_section->vma); | |
2747 | } | |
2748 | else if (sym_sec->output_section != NULL) | |
2749 | destination = (sym_value + irela->r_addend | |
2750 | + sym_sec->output_offset | |
2751 | + sym_sec->output_section->vma); | |
2752 | } | |
2753 | else if (hash->root.root.type == bfd_link_hash_undefined | |
2754 | || (hash->root.root.type | |
2755 | == bfd_link_hash_undefweak)) | |
2756 | { | |
2757 | /* For a shared library, use the PLT stub as | |
2758 | target address to decide whether a long | |
2759 | branch stub is needed. | |
2760 | For absolute code, they cannot be handled. */ | |
cec5225b YZ |
2761 | struct elf_aarch64_link_hash_table *globals = |
2762 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
2763 | |
2764 | if (globals->root.splt != NULL && hash != NULL | |
2765 | && hash->root.plt.offset != (bfd_vma) - 1) | |
2766 | { | |
2767 | sym_sec = globals->root.splt; | |
2768 | sym_value = hash->root.plt.offset; | |
2769 | if (sym_sec->output_section != NULL) | |
2770 | destination = (sym_value | |
2771 | + sym_sec->output_offset | |
2772 | + | |
2773 | sym_sec->output_section->vma); | |
2774 | } | |
2775 | else | |
2776 | continue; | |
2777 | } | |
2778 | else | |
2779 | { | |
2780 | bfd_set_error (bfd_error_bad_value); | |
2781 | goto error_ret_free_internal; | |
2782 | } | |
2783 | st_type = ELF_ST_TYPE (hash->root.type); | |
2784 | sym_name = hash->root.root.root.string; | |
2785 | } | |
2786 | ||
2787 | /* Determine what (if any) linker stub is needed. */ | |
2788 | stub_type = aarch64_type_of_stub | |
2789 | (info, section, irela, st_type, hash, destination); | |
2790 | if (stub_type == aarch64_stub_none) | |
2791 | continue; | |
2792 | ||
2793 | /* Support for grouping stub sections. */ | |
2794 | id_sec = htab->stub_group[section->id].link_sec; | |
2795 | ||
2796 | /* Get the name of this stub. */ | |
cec5225b | 2797 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, hash, |
a06ea964 NC |
2798 | irela); |
2799 | if (!stub_name) | |
2800 | goto error_ret_free_internal; | |
2801 | ||
2802 | stub_entry = | |
2803 | aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
2804 | stub_name, FALSE, FALSE); | |
2805 | if (stub_entry != NULL) | |
2806 | { | |
2807 | /* The proper stub has already been created. */ | |
2808 | free (stub_name); | |
2809 | continue; | |
2810 | } | |
2811 | ||
cec5225b | 2812 | stub_entry = elfNN_aarch64_add_stub (stub_name, section, |
a06ea964 NC |
2813 | htab); |
2814 | if (stub_entry == NULL) | |
2815 | { | |
2816 | free (stub_name); | |
2817 | goto error_ret_free_internal; | |
2818 | } | |
2819 | ||
2820 | stub_entry->target_value = sym_value; | |
2821 | stub_entry->target_section = sym_sec; | |
2822 | stub_entry->stub_type = stub_type; | |
2823 | stub_entry->h = hash; | |
2824 | stub_entry->st_type = st_type; | |
2825 | ||
2826 | if (sym_name == NULL) | |
2827 | sym_name = "unnamed"; | |
2828 | len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name); | |
2829 | stub_entry->output_name = bfd_alloc (htab->stub_bfd, len); | |
2830 | if (stub_entry->output_name == NULL) | |
2831 | { | |
2832 | free (stub_name); | |
2833 | goto error_ret_free_internal; | |
2834 | } | |
2835 | ||
2836 | snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME, | |
2837 | sym_name); | |
2838 | ||
2839 | stub_changed = TRUE; | |
2840 | } | |
2841 | ||
2842 | /* We're done with the internal relocs, free them. */ | |
2843 | if (elf_section_data (section)->relocs == NULL) | |
2844 | free (internal_relocs); | |
2845 | } | |
2846 | } | |
2847 | ||
2848 | if (!stub_changed) | |
2849 | break; | |
2850 | ||
2851 | /* OK, we've added some stubs. Find out the new size of the | |
2852 | stub sections. */ | |
2853 | for (stub_sec = htab->stub_bfd->sections; | |
2854 | stub_sec != NULL; stub_sec = stub_sec->next) | |
2855 | stub_sec->size = 0; | |
2856 | ||
2857 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab); | |
2858 | ||
2859 | /* Ask the linker to do its stuff. */ | |
2860 | (*htab->layout_sections_again) (); | |
2861 | stub_changed = FALSE; | |
2862 | } | |
2863 | ||
2864 | return TRUE; | |
2865 | ||
2866 | error_ret_free_local: | |
2867 | return FALSE; | |
2868 | } | |
2869 | ||
2870 | /* Build all the stubs associated with the current output file. The | |
2871 | stubs are kept in a hash table attached to the main linker hash | |
2872 | table. We also set up the .plt entries for statically linked PIC | |
2873 | functions here. This function is called via aarch64_elf_finish in the | |
2874 | linker. */ | |
2875 | ||
2876 | bfd_boolean | |
cec5225b | 2877 | elfNN_aarch64_build_stubs (struct bfd_link_info *info) |
a06ea964 NC |
2878 | { |
2879 | asection *stub_sec; | |
2880 | struct bfd_hash_table *table; | |
cec5225b | 2881 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 2882 | |
cec5225b | 2883 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
2884 | |
2885 | for (stub_sec = htab->stub_bfd->sections; | |
2886 | stub_sec != NULL; stub_sec = stub_sec->next) | |
2887 | { | |
2888 | bfd_size_type size; | |
2889 | ||
2890 | /* Ignore non-stub sections. */ | |
2891 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
2892 | continue; | |
2893 | ||
2894 | /* Allocate memory to hold the linker stubs. */ | |
2895 | size = stub_sec->size; | |
2896 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); | |
2897 | if (stub_sec->contents == NULL && size != 0) | |
2898 | return FALSE; | |
2899 | stub_sec->size = 0; | |
2900 | } | |
2901 | ||
2902 | /* Build the stubs as directed by the stub hash table. */ | |
2903 | table = &htab->stub_hash_table; | |
2904 | bfd_hash_traverse (table, aarch64_build_one_stub, info); | |
2905 | ||
2906 | return TRUE; | |
2907 | } | |
2908 | ||
2909 | ||
2910 | /* Add an entry to the code/data map for section SEC. */ | |
2911 | ||
2912 | static void | |
cec5225b | 2913 | elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma) |
a06ea964 NC |
2914 | { |
2915 | struct _aarch64_elf_section_data *sec_data = | |
cec5225b | 2916 | elf_aarch64_section_data (sec); |
a06ea964 NC |
2917 | unsigned int newidx; |
2918 | ||
2919 | if (sec_data->map == NULL) | |
2920 | { | |
cec5225b | 2921 | sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
2922 | sec_data->mapcount = 0; |
2923 | sec_data->mapsize = 1; | |
2924 | } | |
2925 | ||
2926 | newidx = sec_data->mapcount++; | |
2927 | ||
2928 | if (sec_data->mapcount > sec_data->mapsize) | |
2929 | { | |
2930 | sec_data->mapsize *= 2; | |
2931 | sec_data->map = bfd_realloc_or_free | |
cec5225b | 2932 | (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
2933 | } |
2934 | ||
2935 | if (sec_data->map) | |
2936 | { | |
2937 | sec_data->map[newidx].vma = vma; | |
2938 | sec_data->map[newidx].type = type; | |
2939 | } | |
2940 | } | |
2941 | ||
2942 | ||
2943 | /* Initialise maps of insn/data for input BFDs. */ | |
2944 | void | |
cec5225b | 2945 | bfd_elfNN_aarch64_init_maps (bfd *abfd) |
a06ea964 NC |
2946 | { |
2947 | Elf_Internal_Sym *isymbuf; | |
2948 | Elf_Internal_Shdr *hdr; | |
2949 | unsigned int i, localsyms; | |
2950 | ||
2951 | /* Make sure that we are dealing with an AArch64 elf binary. */ | |
2952 | if (!is_aarch64_elf (abfd)) | |
2953 | return; | |
2954 | ||
2955 | if ((abfd->flags & DYNAMIC) != 0) | |
2956 | return; | |
2957 | ||
2958 | hdr = &elf_symtab_hdr (abfd); | |
2959 | localsyms = hdr->sh_info; | |
2960 | ||
2961 | /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field | |
2962 | should contain the number of local symbols, which should come before any | |
2963 | global symbols. Mapping symbols are always local. */ | |
2964 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL); | |
2965 | ||
2966 | /* No internal symbols read? Skip this BFD. */ | |
2967 | if (isymbuf == NULL) | |
2968 | return; | |
2969 | ||
2970 | for (i = 0; i < localsyms; i++) | |
2971 | { | |
2972 | Elf_Internal_Sym *isym = &isymbuf[i]; | |
2973 | asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
2974 | const char *name; | |
2975 | ||
2976 | if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL) | |
2977 | { | |
2978 | name = bfd_elf_string_from_elf_section (abfd, | |
2979 | hdr->sh_link, | |
2980 | isym->st_name); | |
2981 | ||
2982 | if (bfd_is_aarch64_special_symbol_name | |
2983 | (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP)) | |
cec5225b | 2984 | elfNN_aarch64_section_map_add (sec, name[1], isym->st_value); |
a06ea964 NC |
2985 | } |
2986 | } | |
2987 | } | |
2988 | ||
2989 | /* Set option values needed during linking. */ | |
2990 | void | |
cec5225b | 2991 | bfd_elfNN_aarch64_set_options (struct bfd *output_bfd, |
a06ea964 NC |
2992 | struct bfd_link_info *link_info, |
2993 | int no_enum_warn, | |
2994 | int no_wchar_warn, int pic_veneer) | |
2995 | { | |
cec5225b | 2996 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 2997 | |
cec5225b | 2998 | globals = elf_aarch64_hash_table (link_info); |
a06ea964 NC |
2999 | globals->pic_veneer = pic_veneer; |
3000 | ||
3001 | BFD_ASSERT (is_aarch64_elf (output_bfd)); | |
3002 | elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn; | |
3003 | elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn; | |
3004 | } | |
3005 | ||
a06ea964 NC |
3006 | static bfd_vma |
3007 | aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h, | |
cec5225b | 3008 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
3009 | *globals, struct bfd_link_info *info, |
3010 | bfd_vma value, bfd *output_bfd, | |
3011 | bfd_boolean *unresolved_reloc_p) | |
3012 | { | |
3013 | bfd_vma off = (bfd_vma) - 1; | |
3014 | asection *basegot = globals->root.sgot; | |
3015 | bfd_boolean dyn = globals->root.dynamic_sections_created; | |
3016 | ||
3017 | if (h != NULL) | |
3018 | { | |
a6bb11b2 | 3019 | BFD_ASSERT (basegot != NULL); |
a06ea964 NC |
3020 | off = h->got.offset; |
3021 | BFD_ASSERT (off != (bfd_vma) - 1); | |
3022 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
3023 | || (info->shared | |
3024 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
3025 | || (ELF_ST_VISIBILITY (h->other) | |
3026 | && h->root.type == bfd_link_hash_undefweak)) | |
3027 | { | |
3028 | /* This is actually a static link, or it is a -Bsymbolic link | |
3029 | and the symbol is defined locally. We must initialize this | |
3030 | entry in the global offset table. Since the offset must | |
a6bb11b2 YZ |
3031 | always be a multiple of 8 (4 in the case of ILP32), we use |
3032 | the least significant bit to record whether we have | |
3033 | initialized it already. | |
a06ea964 NC |
3034 | When doing a dynamic link, we create a .rel(a).got relocation |
3035 | entry to initialize the value. This is done in the | |
3036 | finish_dynamic_symbol routine. */ | |
3037 | if ((off & 1) != 0) | |
3038 | off &= ~1; | |
3039 | else | |
3040 | { | |
cec5225b | 3041 | bfd_put_NN (output_bfd, value, basegot->contents + off); |
a06ea964 NC |
3042 | h->got.offset |= 1; |
3043 | } | |
3044 | } | |
3045 | else | |
3046 | *unresolved_reloc_p = FALSE; | |
3047 | ||
3048 | off = off + basegot->output_section->vma + basegot->output_offset; | |
3049 | } | |
3050 | ||
3051 | return off; | |
3052 | } | |
3053 | ||
3054 | /* Change R_TYPE to a more efficient access model where possible, | |
3055 | return the new reloc type. */ | |
3056 | ||
a6bb11b2 YZ |
3057 | static bfd_reloc_code_real_type |
3058 | aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type, | |
a06ea964 NC |
3059 | struct elf_link_hash_entry *h) |
3060 | { | |
3061 | bfd_boolean is_local = h == NULL; | |
a6bb11b2 | 3062 | |
a06ea964 NC |
3063 | switch (r_type) |
3064 | { | |
a6bb11b2 YZ |
3065 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3066 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
3067 | return (is_local | |
3068 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
3069 | : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21); | |
3070 | ||
3071 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: | |
3072 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: | |
3073 | return (is_local | |
3074 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
3075 | : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC); | |
3076 | ||
3077 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: | |
3078 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type; | |
3079 | ||
3080 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
3081 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type; | |
3082 | ||
3083 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: | |
3084 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
a06ea964 | 3085 | /* Instructions with these relocations will become NOPs. */ |
a6bb11b2 YZ |
3086 | return BFD_RELOC_AARCH64_NONE; |
3087 | ||
3088 | default: | |
3089 | break; | |
a06ea964 NC |
3090 | } |
3091 | ||
3092 | return r_type; | |
3093 | } | |
3094 | ||
3095 | static unsigned int | |
a6bb11b2 | 3096 | aarch64_reloc_got_type (bfd_reloc_code_real_type r_type) |
a06ea964 NC |
3097 | { |
3098 | switch (r_type) | |
3099 | { | |
a6bb11b2 YZ |
3100 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
3101 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: | |
3102 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: | |
3103 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
a06ea964 NC |
3104 | return GOT_NORMAL; |
3105 | ||
a6bb11b2 YZ |
3106 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3107 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: | |
a06ea964 NC |
3108 | return GOT_TLS_GD; |
3109 | ||
a6bb11b2 YZ |
3110 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
3111 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
3112 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
3113 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: | |
3114 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: | |
a06ea964 NC |
3115 | return GOT_TLSDESC_GD; |
3116 | ||
a6bb11b2 YZ |
3117 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
3118 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: | |
3119 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: | |
a06ea964 NC |
3120 | return GOT_TLS_IE; |
3121 | ||
a6bb11b2 YZ |
3122 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
3123 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: | |
3124 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: | |
3125 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: | |
3126 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
3127 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: | |
3128 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
3129 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
a06ea964 | 3130 | return GOT_UNKNOWN; |
a6bb11b2 YZ |
3131 | |
3132 | default: | |
3133 | break; | |
a06ea964 NC |
3134 | } |
3135 | return GOT_UNKNOWN; | |
3136 | } | |
3137 | ||
3138 | static bfd_boolean | |
3139 | aarch64_can_relax_tls (bfd *input_bfd, | |
3140 | struct bfd_link_info *info, | |
a6bb11b2 | 3141 | bfd_reloc_code_real_type r_type, |
a06ea964 NC |
3142 | struct elf_link_hash_entry *h, |
3143 | unsigned long r_symndx) | |
3144 | { | |
3145 | unsigned int symbol_got_type; | |
3146 | unsigned int reloc_got_type; | |
3147 | ||
3148 | if (! IS_AARCH64_TLS_RELOC (r_type)) | |
3149 | return FALSE; | |
3150 | ||
cec5225b | 3151 | symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx); |
a06ea964 NC |
3152 | reloc_got_type = aarch64_reloc_got_type (r_type); |
3153 | ||
3154 | if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type)) | |
3155 | return TRUE; | |
3156 | ||
3157 | if (info->shared) | |
3158 | return FALSE; | |
3159 | ||
3160 | if (h && h->root.type == bfd_link_hash_undefweak) | |
3161 | return FALSE; | |
3162 | ||
3163 | return TRUE; | |
3164 | } | |
3165 | ||
a6bb11b2 YZ |
3166 | /* Given the relocation code R_TYPE, return the relaxed bfd reloc |
3167 | enumerator. */ | |
3168 | ||
3169 | static bfd_reloc_code_real_type | |
a06ea964 NC |
3170 | aarch64_tls_transition (bfd *input_bfd, |
3171 | struct bfd_link_info *info, | |
3172 | unsigned int r_type, | |
3173 | struct elf_link_hash_entry *h, | |
3174 | unsigned long r_symndx) | |
3175 | { | |
a6bb11b2 YZ |
3176 | bfd_reloc_code_real_type bfd_r_type |
3177 | = elfNN_aarch64_bfd_reloc_from_type (r_type); | |
a06ea964 | 3178 | |
a6bb11b2 YZ |
3179 | if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx)) |
3180 | return bfd_r_type; | |
3181 | ||
3182 | return aarch64_tls_transition_without_check (bfd_r_type, h); | |
a06ea964 NC |
3183 | } |
3184 | ||
3185 | /* Return the base VMA address which should be subtracted from real addresses | |
a6bb11b2 | 3186 | when resolving R_AARCH64_TLS_DTPREL relocation. */ |
a06ea964 NC |
3187 | |
3188 | static bfd_vma | |
3189 | dtpoff_base (struct bfd_link_info *info) | |
3190 | { | |
3191 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
3192 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); | |
3193 | return elf_hash_table (info)->tls_sec->vma; | |
3194 | } | |
3195 | ||
a06ea964 NC |
3196 | /* Return the base VMA address which should be subtracted from real addresses |
3197 | when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */ | |
3198 | ||
3199 | static bfd_vma | |
3200 | tpoff_base (struct bfd_link_info *info) | |
3201 | { | |
3202 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
3203 | ||
3204 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
3205 | if (htab->tls_sec == NULL) | |
3206 | return 0; | |
3207 | ||
3208 | bfd_vma base = align_power ((bfd_vma) TCB_SIZE, | |
3209 | htab->tls_sec->alignment_power); | |
3210 | return htab->tls_sec->vma - base; | |
3211 | } | |
3212 | ||
3213 | static bfd_vma * | |
3214 | symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
3215 | unsigned long r_symndx) | |
3216 | { | |
3217 | /* Calculate the address of the GOT entry for symbol | |
3218 | referred to in h. */ | |
3219 | if (h != NULL) | |
3220 | return &h->got.offset; | |
3221 | else | |
3222 | { | |
3223 | /* local symbol */ | |
3224 | struct elf_aarch64_local_symbol *l; | |
3225 | ||
cec5225b | 3226 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
3227 | return &l[r_symndx].got_offset; |
3228 | } | |
3229 | } | |
3230 | ||
3231 | static void | |
3232 | symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
3233 | unsigned long r_symndx) | |
3234 | { | |
3235 | bfd_vma *p; | |
3236 | p = symbol_got_offset_ref (input_bfd, h, r_symndx); | |
3237 | *p |= 1; | |
3238 | } | |
3239 | ||
3240 | static int | |
3241 | symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h, | |
3242 | unsigned long r_symndx) | |
3243 | { | |
3244 | bfd_vma value; | |
3245 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
3246 | return value & 1; | |
3247 | } | |
3248 | ||
3249 | static bfd_vma | |
3250 | symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
3251 | unsigned long r_symndx) | |
3252 | { | |
3253 | bfd_vma value; | |
3254 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
3255 | value &= ~1; | |
3256 | return value; | |
3257 | } | |
3258 | ||
3259 | static bfd_vma * | |
3260 | symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
3261 | unsigned long r_symndx) | |
3262 | { | |
3263 | /* Calculate the address of the GOT entry for symbol | |
3264 | referred to in h. */ | |
3265 | if (h != NULL) | |
3266 | { | |
cec5225b YZ |
3267 | struct elf_aarch64_link_hash_entry *eh; |
3268 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
3269 | return &eh->tlsdesc_got_jump_table_offset; |
3270 | } | |
3271 | else | |
3272 | { | |
3273 | /* local symbol */ | |
3274 | struct elf_aarch64_local_symbol *l; | |
3275 | ||
cec5225b | 3276 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
3277 | return &l[r_symndx].tlsdesc_got_jump_table_offset; |
3278 | } | |
3279 | } | |
3280 | ||
3281 | static void | |
3282 | symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
3283 | unsigned long r_symndx) | |
3284 | { | |
3285 | bfd_vma *p; | |
3286 | p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
3287 | *p |= 1; | |
3288 | } | |
3289 | ||
3290 | static int | |
3291 | symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd, | |
3292 | struct elf_link_hash_entry *h, | |
3293 | unsigned long r_symndx) | |
3294 | { | |
3295 | bfd_vma value; | |
3296 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
3297 | return value & 1; | |
3298 | } | |
3299 | ||
3300 | static bfd_vma | |
3301 | symbol_tlsdesc_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
3302 | unsigned long r_symndx) | |
3303 | { | |
3304 | bfd_vma value; | |
3305 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
3306 | value &= ~1; | |
3307 | return value; | |
3308 | } | |
3309 | ||
3310 | /* Perform a relocation as part of a final link. */ | |
3311 | static bfd_reloc_status_type | |
cec5225b | 3312 | elfNN_aarch64_final_link_relocate (reloc_howto_type *howto, |
a06ea964 NC |
3313 | bfd *input_bfd, |
3314 | bfd *output_bfd, | |
3315 | asection *input_section, | |
3316 | bfd_byte *contents, | |
3317 | Elf_Internal_Rela *rel, | |
3318 | bfd_vma value, | |
3319 | struct bfd_link_info *info, | |
3320 | asection *sym_sec, | |
3321 | struct elf_link_hash_entry *h, | |
3322 | bfd_boolean *unresolved_reloc_p, | |
3323 | bfd_boolean save_addend, | |
8847944f | 3324 | bfd_vma *saved_addend) |
a06ea964 NC |
3325 | { |
3326 | unsigned int r_type = howto->type; | |
a6bb11b2 YZ |
3327 | bfd_reloc_code_real_type bfd_r_type |
3328 | = elfNN_aarch64_bfd_reloc_from_howto (howto); | |
3329 | bfd_reloc_code_real_type new_bfd_r_type; | |
a06ea964 NC |
3330 | unsigned long r_symndx; |
3331 | bfd_byte *hit_data = contents + rel->r_offset; | |
3332 | bfd_vma place; | |
3333 | bfd_signed_vma signed_addend; | |
cec5225b | 3334 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 NC |
3335 | bfd_boolean weak_undef_p; |
3336 | ||
cec5225b | 3337 | globals = elf_aarch64_hash_table (info); |
a06ea964 NC |
3338 | |
3339 | BFD_ASSERT (is_aarch64_elf (input_bfd)); | |
3340 | ||
cec5225b | 3341 | r_symndx = ELFNN_R_SYM (rel->r_info); |
a06ea964 NC |
3342 | |
3343 | /* It is possible to have linker relaxations on some TLS access | |
3344 | models. Update our information here. */ | |
a6bb11b2 YZ |
3345 | new_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, h, r_symndx); |
3346 | if (new_bfd_r_type != bfd_r_type) | |
3347 | { | |
3348 | bfd_r_type = new_bfd_r_type; | |
3349 | howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type); | |
3350 | BFD_ASSERT (howto != NULL); | |
3351 | r_type = howto->type; | |
3352 | } | |
a06ea964 NC |
3353 | |
3354 | place = input_section->output_section->vma | |
3355 | + input_section->output_offset + rel->r_offset; | |
3356 | ||
3357 | /* Get addend, accumulating the addend for consecutive relocs | |
3358 | which refer to the same offset. */ | |
3359 | signed_addend = saved_addend ? *saved_addend : 0; | |
3360 | signed_addend += rel->r_addend; | |
3361 | ||
3362 | weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak | |
3363 | : bfd_is_und_section (sym_sec)); | |
a6bb11b2 YZ |
3364 | |
3365 | switch (bfd_r_type) | |
a06ea964 | 3366 | { |
a6bb11b2 YZ |
3367 | case BFD_RELOC_AARCH64_NONE: |
3368 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
a06ea964 NC |
3369 | *unresolved_reloc_p = FALSE; |
3370 | return bfd_reloc_ok; | |
3371 | ||
a6bb11b2 | 3372 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
3373 | |
3374 | /* When generating a shared object or relocatable executable, these | |
3375 | relocations are copied into the output file to be resolved at | |
3376 | run time. */ | |
3377 | if (((info->shared == TRUE) || globals->root.is_relocatable_executable) | |
3378 | && (input_section->flags & SEC_ALLOC) | |
3379 | && (h == NULL | |
3380 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3381 | || h->root.type != bfd_link_hash_undefweak)) | |
3382 | { | |
3383 | Elf_Internal_Rela outrel; | |
3384 | bfd_byte *loc; | |
3385 | bfd_boolean skip, relocate; | |
3386 | asection *sreloc; | |
3387 | ||
3388 | *unresolved_reloc_p = FALSE; | |
3389 | ||
8847944f WN |
3390 | sreloc = _bfd_elf_get_dynamic_reloc_section (input_bfd, |
3391 | input_section, 1); | |
3392 | if (sreloc == NULL) | |
3393 | return bfd_reloc_notsupported; | |
3394 | ||
a06ea964 NC |
3395 | skip = FALSE; |
3396 | relocate = FALSE; | |
3397 | ||
3398 | outrel.r_addend = signed_addend; | |
3399 | outrel.r_offset = | |
3400 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
3401 | rel->r_offset); | |
3402 | if (outrel.r_offset == (bfd_vma) - 1) | |
3403 | skip = TRUE; | |
3404 | else if (outrel.r_offset == (bfd_vma) - 2) | |
3405 | { | |
3406 | skip = TRUE; | |
3407 | relocate = TRUE; | |
3408 | } | |
3409 | ||
3410 | outrel.r_offset += (input_section->output_section->vma | |
3411 | + input_section->output_offset); | |
3412 | ||
3413 | if (skip) | |
3414 | memset (&outrel, 0, sizeof outrel); | |
3415 | else if (h != NULL | |
3416 | && h->dynindx != -1 | |
3417 | && (!info->shared || !info->symbolic || !h->def_regular)) | |
cec5225b | 3418 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); |
a06ea964 NC |
3419 | else |
3420 | { | |
3421 | int symbol; | |
3422 | ||
3423 | /* On SVR4-ish systems, the dynamic loader cannot | |
3424 | relocate the text and data segments independently, | |
3425 | so the symbol does not matter. */ | |
3426 | symbol = 0; | |
a6bb11b2 | 3427 | outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE)); |
a06ea964 NC |
3428 | outrel.r_addend += value; |
3429 | } | |
3430 | ||
8847944f | 3431 | loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (htab); |
cec5225b | 3432 | bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc); |
a06ea964 | 3433 | |
8847944f | 3434 | if (sreloc->reloc_count * RELOC_SIZE (htab) > sreloc->size) |
a06ea964 NC |
3435 | { |
3436 | /* Sanity to check that we have previously allocated | |
3437 | sufficient space in the relocation section for the | |
3438 | number of relocations we actually want to emit. */ | |
3439 | abort (); | |
3440 | } | |
3441 | ||
3442 | /* If this reloc is against an external symbol, we do not want to | |
3443 | fiddle with the addend. Otherwise, we need to include the symbol | |
3444 | value so that it becomes an addend for the dynamic reloc. */ | |
3445 | if (!relocate) | |
3446 | return bfd_reloc_ok; | |
3447 | ||
3448 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3449 | contents, rel->r_offset, value, | |
3450 | signed_addend); | |
3451 | } | |
3452 | else | |
3453 | value += signed_addend; | |
3454 | break; | |
3455 | ||
a6bb11b2 YZ |
3456 | case BFD_RELOC_AARCH64_JUMP26: |
3457 | case BFD_RELOC_AARCH64_CALL26: | |
a06ea964 NC |
3458 | { |
3459 | asection *splt = globals->root.splt; | |
3460 | bfd_boolean via_plt_p = | |
3461 | splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1; | |
3462 | ||
3463 | /* A call to an undefined weak symbol is converted to a jump to | |
3464 | the next instruction unless a PLT entry will be created. | |
3465 | The jump to the next instruction is optimized as a NOP. | |
3466 | Do the same for local undefined symbols. */ | |
3467 | if (weak_undef_p && ! via_plt_p) | |
3468 | { | |
3469 | bfd_putl32 (INSN_NOP, hit_data); | |
3470 | return bfd_reloc_ok; | |
3471 | } | |
3472 | ||
3473 | /* If the call goes through a PLT entry, make sure to | |
3474 | check distance to the right destination address. */ | |
3475 | if (via_plt_p) | |
3476 | { | |
3477 | value = (splt->output_section->vma | |
3478 | + splt->output_offset + h->plt.offset); | |
3479 | *unresolved_reloc_p = FALSE; | |
3480 | } | |
3481 | ||
3482 | /* If the target symbol is global and marked as a function the | |
3483 | relocation applies a function call or a tail call. In this | |
3484 | situation we can veneer out of range branches. The veneers | |
3485 | use IP0 and IP1 hence cannot be used arbitrary out of range | |
3486 | branches that occur within the body of a function. */ | |
3487 | if (h && h->type == STT_FUNC) | |
3488 | { | |
3489 | /* Check if a stub has to be inserted because the destination | |
3490 | is too far away. */ | |
3491 | if (! aarch64_valid_branch_p (value, place)) | |
3492 | { | |
3493 | /* The target is out of reach, so redirect the branch to | |
3494 | the local stub for this function. */ | |
cec5225b YZ |
3495 | struct elf_aarch64_stub_hash_entry *stub_entry; |
3496 | stub_entry = elfNN_aarch64_get_stub_entry (input_section, | |
a06ea964 NC |
3497 | sym_sec, h, |
3498 | rel, globals); | |
3499 | if (stub_entry != NULL) | |
3500 | value = (stub_entry->stub_offset | |
3501 | + stub_entry->stub_sec->output_offset | |
3502 | + stub_entry->stub_sec->output_section->vma); | |
3503 | } | |
3504 | } | |
3505 | } | |
caed7120 YZ |
3506 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
3507 | signed_addend, weak_undef_p); | |
a06ea964 NC |
3508 | break; |
3509 | ||
a6bb11b2 YZ |
3510 | case BFD_RELOC_AARCH64_16: |
3511 | #if ARCH_SIZE == 64 | |
3512 | case BFD_RELOC_AARCH64_32: | |
3513 | #endif | |
3514 | case BFD_RELOC_AARCH64_ADD_LO12: | |
3515 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
3516 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
3517 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: | |
3518 | case BFD_RELOC_AARCH64_BRANCH19: | |
3519 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
3520 | case BFD_RELOC_AARCH64_LDST8_LO12: | |
3521 | case BFD_RELOC_AARCH64_LDST16_LO12: | |
3522 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
3523 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
3524 | case BFD_RELOC_AARCH64_LDST128_LO12: | |
3525 | case BFD_RELOC_AARCH64_MOVW_G0_S: | |
3526 | case BFD_RELOC_AARCH64_MOVW_G1_S: | |
3527 | case BFD_RELOC_AARCH64_MOVW_G2_S: | |
3528 | case BFD_RELOC_AARCH64_MOVW_G0: | |
3529 | case BFD_RELOC_AARCH64_MOVW_G0_NC: | |
3530 | case BFD_RELOC_AARCH64_MOVW_G1: | |
3531 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
3532 | case BFD_RELOC_AARCH64_MOVW_G2: | |
3533 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
3534 | case BFD_RELOC_AARCH64_MOVW_G3: | |
3535 | case BFD_RELOC_AARCH64_16_PCREL: | |
3536 | case BFD_RELOC_AARCH64_32_PCREL: | |
3537 | case BFD_RELOC_AARCH64_64_PCREL: | |
3538 | case BFD_RELOC_AARCH64_TSTBR14: | |
caed7120 YZ |
3539 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
3540 | signed_addend, weak_undef_p); | |
a06ea964 NC |
3541 | break; |
3542 | ||
a6bb11b2 YZ |
3543 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
3544 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: | |
3545 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: | |
3546 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
a06ea964 NC |
3547 | if (globals->root.sgot == NULL) |
3548 | BFD_ASSERT (h != NULL); | |
3549 | ||
3550 | if (h != NULL) | |
3551 | { | |
3552 | value = aarch64_calculate_got_entry_vma (h, globals, info, value, | |
3553 | output_bfd, | |
3554 | unresolved_reloc_p); | |
caed7120 YZ |
3555 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
3556 | 0, weak_undef_p); | |
a06ea964 NC |
3557 | } |
3558 | break; | |
3559 | ||
a6bb11b2 YZ |
3560 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3561 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: | |
3562 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: | |
3563 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: | |
3564 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: | |
a06ea964 NC |
3565 | if (globals->root.sgot == NULL) |
3566 | return bfd_reloc_notsupported; | |
3567 | ||
3568 | value = (symbol_got_offset (input_bfd, h, r_symndx) | |
3569 | + globals->root.sgot->output_section->vma | |
3570 | + globals->root.sgot->output_section->output_offset); | |
3571 | ||
caed7120 YZ |
3572 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
3573 | 0, weak_undef_p); | |
a06ea964 NC |
3574 | *unresolved_reloc_p = FALSE; |
3575 | break; | |
3576 | ||
a6bb11b2 YZ |
3577 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
3578 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: | |
3579 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: | |
3580 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: | |
3581 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
3582 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: | |
3583 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
3584 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
caed7120 YZ |
3585 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
3586 | signed_addend - tpoff_base (info), | |
3587 | weak_undef_p); | |
a06ea964 NC |
3588 | *unresolved_reloc_p = FALSE; |
3589 | break; | |
3590 | ||
7bcccb57 MS |
3591 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
3592 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: | |
a6bb11b2 | 3593 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
a6bb11b2 | 3594 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
7bcccb57 | 3595 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: |
a6bb11b2 | 3596 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
a06ea964 NC |
3597 | if (globals->root.sgot == NULL) |
3598 | return bfd_reloc_notsupported; | |
3599 | ||
3600 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) | |
3601 | + globals->root.sgotplt->output_section->vma | |
3602 | + globals->root.sgotplt->output_section->output_offset | |
3603 | + globals->sgotplt_jump_table_size); | |
3604 | ||
caed7120 YZ |
3605 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
3606 | 0, weak_undef_p); | |
a06ea964 NC |
3607 | *unresolved_reloc_p = FALSE; |
3608 | break; | |
3609 | ||
3610 | default: | |
3611 | return bfd_reloc_notsupported; | |
3612 | } | |
3613 | ||
3614 | if (saved_addend) | |
3615 | *saved_addend = value; | |
3616 | ||
3617 | /* Only apply the final relocation in a sequence. */ | |
3618 | if (save_addend) | |
3619 | return bfd_reloc_continue; | |
3620 | ||
caed7120 YZ |
3621 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, |
3622 | howto, value); | |
a06ea964 NC |
3623 | } |
3624 | ||
3625 | /* Handle TLS relaxations. Relaxing is possible for symbols that use | |
3626 | R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static | |
3627 | link. | |
3628 | ||
3629 | Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller | |
3630 | is to then call final_link_relocate. Return other values in the | |
3631 | case of error. */ | |
3632 | ||
3633 | static bfd_reloc_status_type | |
cec5225b | 3634 | elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals, |
a06ea964 NC |
3635 | bfd *input_bfd, bfd_byte *contents, |
3636 | Elf_Internal_Rela *rel, struct elf_link_hash_entry *h) | |
3637 | { | |
3638 | bfd_boolean is_local = h == NULL; | |
cec5225b | 3639 | unsigned int r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
3640 | unsigned long insn; |
3641 | ||
3642 | BFD_ASSERT (globals && input_bfd && contents && rel); | |
3643 | ||
a6bb11b2 | 3644 | switch (elfNN_aarch64_bfd_reloc_from_type (r_type)) |
a06ea964 | 3645 | { |
a6bb11b2 YZ |
3646 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3647 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
a06ea964 NC |
3648 | if (is_local) |
3649 | { | |
3650 | /* GD->LE relaxation: | |
3651 | adrp x0, :tlsgd:var => movz x0, :tprel_g1:var | |
3652 | or | |
3653 | adrp x0, :tlsdesc:var => movz x0, :tprel_g1:var | |
3654 | */ | |
3655 | bfd_putl32 (0xd2a00000, contents + rel->r_offset); | |
3656 | return bfd_reloc_continue; | |
3657 | } | |
3658 | else | |
3659 | { | |
3660 | /* GD->IE relaxation: | |
3661 | adrp x0, :tlsgd:var => adrp x0, :gottprel:var | |
3662 | or | |
3663 | adrp x0, :tlsdesc:var => adrp x0, :gottprel:var | |
3664 | */ | |
3665 | insn = bfd_getl32 (contents + rel->r_offset); | |
3666 | return bfd_reloc_continue; | |
3667 | } | |
3668 | ||
a6bb11b2 | 3669 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
a06ea964 NC |
3670 | if (is_local) |
3671 | { | |
3672 | /* GD->LE relaxation: | |
3673 | ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var | |
3674 | */ | |
3675 | bfd_putl32 (0xf2800000, contents + rel->r_offset); | |
3676 | return bfd_reloc_continue; | |
3677 | } | |
3678 | else | |
3679 | { | |
3680 | /* GD->IE relaxation: | |
3681 | ldr xd, [x0, #:tlsdesc_lo12:var] => ldr x0, [x0, #:gottprel_lo12:var] | |
3682 | */ | |
3683 | insn = bfd_getl32 (contents + rel->r_offset); | |
3684 | insn &= 0xfffffff0; | |
3685 | bfd_putl32 (insn, contents + rel->r_offset); | |
3686 | return bfd_reloc_continue; | |
3687 | } | |
3688 | ||
a6bb11b2 | 3689 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a06ea964 NC |
3690 | if (is_local) |
3691 | { | |
3692 | /* GD->LE relaxation | |
3693 | add x0, #:tlsgd_lo12:var => movk x0, :tprel_g0_nc:var | |
3694 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
3695 | nop => add x0, x1, x0 | |
3696 | */ | |
3697 | ||
3698 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
3699 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
cec5225b | 3700 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 NC |
3701 | |
3702 | bfd_putl32 (0xf2800000, contents + rel->r_offset); | |
3703 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); | |
3704 | bfd_putl32 (0x8b000020, contents + rel->r_offset + 8); | |
3705 | return bfd_reloc_continue; | |
3706 | } | |
3707 | else | |
3708 | { | |
3709 | /* GD->IE relaxation | |
3710 | ADD x0, #:tlsgd_lo12:var => ldr x0, [x0, #:gottprel_lo12:var] | |
3711 | BL __tls_get_addr => mrs x1, tpidr_el0 | |
3712 | R_AARCH64_CALL26 | |
3713 | NOP => add x0, x1, x0 | |
3714 | */ | |
3715 | ||
a6bb11b2 | 3716 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); |
a06ea964 NC |
3717 | |
3718 | /* Remove the relocation on the BL instruction. */ | |
cec5225b | 3719 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 NC |
3720 | |
3721 | bfd_putl32 (0xf9400000, contents + rel->r_offset); | |
3722 | ||
3723 | /* We choose to fixup the BL and NOP instructions using the | |
3724 | offset from the second relocation to allow flexibility in | |
3725 | scheduling instructions between the ADD and BL. */ | |
3726 | bfd_putl32 (0xd53bd041, contents + rel[1].r_offset); | |
3727 | bfd_putl32 (0x8b000020, contents + rel[1].r_offset + 4); | |
3728 | return bfd_reloc_continue; | |
3729 | } | |
3730 | ||
a6bb11b2 YZ |
3731 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
3732 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
a06ea964 NC |
3733 | /* GD->IE/LE relaxation: |
3734 | add x0, x0, #:tlsdesc_lo12:var => nop | |
3735 | blr xd => nop | |
3736 | */ | |
3737 | bfd_putl32 (INSN_NOP, contents + rel->r_offset); | |
3738 | return bfd_reloc_ok; | |
3739 | ||
a6bb11b2 | 3740 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a06ea964 NC |
3741 | /* IE->LE relaxation: |
3742 | adrp xd, :gottprel:var => movz xd, :tprel_g1:var | |
3743 | */ | |
3744 | if (is_local) | |
3745 | { | |
3746 | insn = bfd_getl32 (contents + rel->r_offset); | |
3747 | bfd_putl32 (0xd2a00000 | (insn & 0x1f), contents + rel->r_offset); | |
3748 | } | |
3749 | return bfd_reloc_continue; | |
3750 | ||
a6bb11b2 | 3751 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: |
a06ea964 NC |
3752 | /* IE->LE relaxation: |
3753 | ldr xd, [xm, #:gottprel_lo12:var] => movk xd, :tprel_g0_nc:var | |
3754 | */ | |
3755 | if (is_local) | |
3756 | { | |
3757 | insn = bfd_getl32 (contents + rel->r_offset); | |
3758 | bfd_putl32 (0xf2800000 | (insn & 0x1f), contents + rel->r_offset); | |
3759 | } | |
3760 | return bfd_reloc_continue; | |
3761 | ||
3762 | default: | |
3763 | return bfd_reloc_continue; | |
3764 | } | |
3765 | ||
3766 | return bfd_reloc_ok; | |
3767 | } | |
3768 | ||
3769 | /* Relocate an AArch64 ELF section. */ | |
3770 | ||
3771 | static bfd_boolean | |
cec5225b | 3772 | elfNN_aarch64_relocate_section (bfd *output_bfd, |
a06ea964 NC |
3773 | struct bfd_link_info *info, |
3774 | bfd *input_bfd, | |
3775 | asection *input_section, | |
3776 | bfd_byte *contents, | |
3777 | Elf_Internal_Rela *relocs, | |
3778 | Elf_Internal_Sym *local_syms, | |
3779 | asection **local_sections) | |
3780 | { | |
3781 | Elf_Internal_Shdr *symtab_hdr; | |
3782 | struct elf_link_hash_entry **sym_hashes; | |
3783 | Elf_Internal_Rela *rel; | |
3784 | Elf_Internal_Rela *relend; | |
3785 | const char *name; | |
cec5225b | 3786 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 NC |
3787 | bfd_boolean save_addend = FALSE; |
3788 | bfd_vma addend = 0; | |
3789 | ||
cec5225b | 3790 | globals = elf_aarch64_hash_table (info); |
a06ea964 NC |
3791 | |
3792 | symtab_hdr = &elf_symtab_hdr (input_bfd); | |
3793 | sym_hashes = elf_sym_hashes (input_bfd); | |
3794 | ||
3795 | rel = relocs; | |
3796 | relend = relocs + input_section->reloc_count; | |
3797 | for (; rel < relend; rel++) | |
3798 | { | |
3799 | unsigned int r_type; | |
a6bb11b2 YZ |
3800 | bfd_reloc_code_real_type bfd_r_type; |
3801 | bfd_reloc_code_real_type relaxed_bfd_r_type; | |
a06ea964 NC |
3802 | reloc_howto_type *howto; |
3803 | unsigned long r_symndx; | |
3804 | Elf_Internal_Sym *sym; | |
3805 | asection *sec; | |
3806 | struct elf_link_hash_entry *h; | |
3807 | bfd_vma relocation; | |
3808 | bfd_reloc_status_type r; | |
3809 | arelent bfd_reloc; | |
3810 | char sym_type; | |
3811 | bfd_boolean unresolved_reloc = FALSE; | |
3812 | char *error_message = NULL; | |
3813 | ||
cec5225b YZ |
3814 | r_symndx = ELFNN_R_SYM (rel->r_info); |
3815 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 | 3816 | |
cec5225b | 3817 | bfd_reloc.howto = elfNN_aarch64_howto_from_type (r_type); |
a06ea964 NC |
3818 | howto = bfd_reloc.howto; |
3819 | ||
7fcfd62d NC |
3820 | if (howto == NULL) |
3821 | { | |
3822 | (*_bfd_error_handler) | |
3823 | (_("%B: unrecognized relocation (0x%x) in section `%A'"), | |
3824 | input_bfd, input_section, r_type); | |
3825 | return FALSE; | |
3826 | } | |
a6bb11b2 | 3827 | bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto); |
7fcfd62d | 3828 | |
a06ea964 NC |
3829 | h = NULL; |
3830 | sym = NULL; | |
3831 | sec = NULL; | |
3832 | ||
3833 | if (r_symndx < symtab_hdr->sh_info) | |
3834 | { | |
3835 | sym = local_syms + r_symndx; | |
cec5225b | 3836 | sym_type = ELFNN_ST_TYPE (sym->st_info); |
a06ea964 NC |
3837 | sec = local_sections[r_symndx]; |
3838 | ||
3839 | /* An object file might have a reference to a local | |
3840 | undefined symbol. This is a daft object file, but we | |
3841 | should at least do something about it. */ | |
3842 | if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL | |
3843 | && bfd_is_und_section (sec) | |
3844 | && ELF_ST_BIND (sym->st_info) != STB_WEAK) | |
3845 | { | |
3846 | if (!info->callbacks->undefined_symbol | |
3847 | (info, bfd_elf_string_from_elf_section | |
3848 | (input_bfd, symtab_hdr->sh_link, sym->st_name), | |
3849 | input_bfd, input_section, rel->r_offset, TRUE)) | |
3850 | return FALSE; | |
3851 | } | |
3852 | ||
a06ea964 NC |
3853 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
3854 | } | |
3855 | else | |
3856 | { | |
3857 | bfd_boolean warned; | |
3858 | ||
3859 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
3860 | r_symndx, symtab_hdr, sym_hashes, | |
3861 | h, sec, relocation, | |
3862 | unresolved_reloc, warned); | |
3863 | ||
3864 | sym_type = h->type; | |
3865 | } | |
3866 | ||
3867 | if (sec != NULL && discarded_section (sec)) | |
3868 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
3869 | rel, 1, relend, howto, 0, contents); | |
3870 | ||
3871 | if (info->relocatable) | |
3872 | { | |
3873 | /* This is a relocatable link. We don't have to change | |
3874 | anything, unless the reloc is against a section symbol, | |
3875 | in which case we have to adjust according to where the | |
3876 | section symbol winds up in the output section. */ | |
3877 | if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
3878 | rel->r_addend += sec->output_offset; | |
3879 | continue; | |
3880 | } | |
3881 | ||
3882 | if (h != NULL) | |
3883 | name = h->root.root.string; | |
3884 | else | |
3885 | { | |
3886 | name = (bfd_elf_string_from_elf_section | |
3887 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
3888 | if (name == NULL || *name == '\0') | |
3889 | name = bfd_section_name (input_bfd, sec); | |
3890 | } | |
3891 | ||
3892 | if (r_symndx != 0 | |
3893 | && r_type != R_AARCH64_NONE | |
3894 | && r_type != R_AARCH64_NULL | |
3895 | && (h == NULL | |
3896 | || h->root.type == bfd_link_hash_defined | |
3897 | || h->root.type == bfd_link_hash_defweak) | |
a6bb11b2 | 3898 | && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS)) |
a06ea964 NC |
3899 | { |
3900 | (*_bfd_error_handler) | |
3901 | ((sym_type == STT_TLS | |
3902 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") | |
3903 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")), | |
3904 | input_bfd, | |
3905 | input_section, (long) rel->r_offset, howto->name, name); | |
3906 | } | |
3907 | ||
a06ea964 NC |
3908 | /* We relax only if we can see that there can be a valid transition |
3909 | from a reloc type to another. | |
cec5225b | 3910 | We call elfNN_aarch64_final_link_relocate unless we're completely |
a06ea964 NC |
3911 | done, i.e., the relaxation produced the final output we want. */ |
3912 | ||
a6bb11b2 YZ |
3913 | relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, |
3914 | h, r_symndx); | |
3915 | if (relaxed_bfd_r_type != bfd_r_type) | |
a06ea964 | 3916 | { |
a6bb11b2 YZ |
3917 | bfd_r_type = relaxed_bfd_r_type; |
3918 | howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type); | |
3919 | BFD_ASSERT (howto != NULL); | |
3920 | r_type = howto->type; | |
cec5225b | 3921 | r = elfNN_aarch64_tls_relax (globals, input_bfd, contents, rel, h); |
a06ea964 NC |
3922 | unresolved_reloc = 0; |
3923 | } | |
3924 | else | |
3925 | r = bfd_reloc_continue; | |
3926 | ||
3927 | /* There may be multiple consecutive relocations for the | |
3928 | same offset. In that case we are supposed to treat the | |
3929 | output of each relocation as the addend for the next. */ | |
3930 | if (rel + 1 < relend | |
3931 | && rel->r_offset == rel[1].r_offset | |
cec5225b YZ |
3932 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE |
3933 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL) | |
a06ea964 NC |
3934 | save_addend = TRUE; |
3935 | else | |
3936 | save_addend = FALSE; | |
3937 | ||
3938 | if (r == bfd_reloc_continue) | |
cec5225b | 3939 | r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd, |
a06ea964 NC |
3940 | input_section, contents, rel, |
3941 | relocation, info, sec, | |
3942 | h, &unresolved_reloc, | |
8847944f | 3943 | save_addend, &addend); |
a06ea964 | 3944 | |
a6bb11b2 | 3945 | switch (elfNN_aarch64_bfd_reloc_from_type (r_type)) |
a06ea964 | 3946 | { |
a6bb11b2 YZ |
3947 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3948 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: | |
a06ea964 NC |
3949 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
3950 | { | |
3951 | bfd_boolean need_relocs = FALSE; | |
3952 | bfd_byte *loc; | |
3953 | int indx; | |
3954 | bfd_vma off; | |
3955 | ||
3956 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
3957 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
3958 | ||
3959 | need_relocs = | |
3960 | (info->shared || indx != 0) && | |
3961 | (h == NULL | |
3962 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3963 | || h->root.type != bfd_link_hash_undefweak); | |
3964 | ||
3965 | BFD_ASSERT (globals->root.srelgot != NULL); | |
3966 | ||
3967 | if (need_relocs) | |
3968 | { | |
3969 | Elf_Internal_Rela rela; | |
a6bb11b2 | 3970 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD)); |
a06ea964 NC |
3971 | rela.r_addend = 0; |
3972 | rela.r_offset = globals->root.sgot->output_section->vma + | |
3973 | globals->root.sgot->output_offset + off; | |
3974 | ||
3975 | ||
3976 | loc = globals->root.srelgot->contents; | |
3977 | loc += globals->root.srelgot->reloc_count++ | |
3978 | * RELOC_SIZE (htab); | |
cec5225b | 3979 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
3980 | |
3981 | if (indx == 0) | |
3982 | { | |
cec5225b | 3983 | bfd_put_NN (output_bfd, |
a06ea964 NC |
3984 | relocation - dtpoff_base (info), |
3985 | globals->root.sgot->contents + off | |
3986 | + GOT_ENTRY_SIZE); | |
3987 | } | |
3988 | else | |
3989 | { | |
3990 | /* This TLS symbol is global. We emit a | |
3991 | relocation to fixup the tls offset at load | |
3992 | time. */ | |
3993 | rela.r_info = | |
a6bb11b2 | 3994 | ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL)); |
a06ea964 NC |
3995 | rela.r_addend = 0; |
3996 | rela.r_offset = | |
3997 | (globals->root.sgot->output_section->vma | |
3998 | + globals->root.sgot->output_offset + off | |
3999 | + GOT_ENTRY_SIZE); | |
4000 | ||
4001 | loc = globals->root.srelgot->contents; | |
4002 | loc += globals->root.srelgot->reloc_count++ | |
4003 | * RELOC_SIZE (globals); | |
cec5225b YZ |
4004 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
4005 | bfd_put_NN (output_bfd, (bfd_vma) 0, | |
a06ea964 NC |
4006 | globals->root.sgot->contents + off |
4007 | + GOT_ENTRY_SIZE); | |
4008 | } | |
4009 | } | |
4010 | else | |
4011 | { | |
cec5225b | 4012 | bfd_put_NN (output_bfd, (bfd_vma) 1, |
a06ea964 | 4013 | globals->root.sgot->contents + off); |
cec5225b | 4014 | bfd_put_NN (output_bfd, |
a06ea964 NC |
4015 | relocation - dtpoff_base (info), |
4016 | globals->root.sgot->contents + off | |
4017 | + GOT_ENTRY_SIZE); | |
4018 | } | |
4019 | ||
4020 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
4021 | } | |
4022 | break; | |
4023 | ||
a6bb11b2 YZ |
4024 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
4025 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
a06ea964 NC |
4026 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
4027 | { | |
4028 | bfd_boolean need_relocs = FALSE; | |
4029 | bfd_byte *loc; | |
4030 | int indx; | |
4031 | bfd_vma off; | |
4032 | ||
4033 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
4034 | ||
4035 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
4036 | ||
4037 | need_relocs = | |
4038 | (info->shared || indx != 0) && | |
4039 | (h == NULL | |
4040 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
4041 | || h->root.type != bfd_link_hash_undefweak); | |
4042 | ||
4043 | BFD_ASSERT (globals->root.srelgot != NULL); | |
4044 | ||
4045 | if (need_relocs) | |
4046 | { | |
4047 | Elf_Internal_Rela rela; | |
4048 | ||
4049 | if (indx == 0) | |
4050 | rela.r_addend = relocation - dtpoff_base (info); | |
4051 | else | |
4052 | rela.r_addend = 0; | |
4053 | ||
a6bb11b2 | 4054 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL)); |
a06ea964 NC |
4055 | rela.r_offset = globals->root.sgot->output_section->vma + |
4056 | globals->root.sgot->output_offset + off; | |
4057 | ||
4058 | loc = globals->root.srelgot->contents; | |
4059 | loc += globals->root.srelgot->reloc_count++ | |
4060 | * RELOC_SIZE (htab); | |
4061 | ||
cec5225b | 4062 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 4063 | |
cec5225b | 4064 | bfd_put_NN (output_bfd, rela.r_addend, |
a06ea964 NC |
4065 | globals->root.sgot->contents + off); |
4066 | } | |
4067 | else | |
cec5225b | 4068 | bfd_put_NN (output_bfd, relocation - tpoff_base (info), |
a06ea964 NC |
4069 | globals->root.sgot->contents + off); |
4070 | ||
4071 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
4072 | } | |
4073 | break; | |
4074 | ||
a6bb11b2 YZ |
4075 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: |
4076 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: | |
4077 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: | |
4078 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
4079 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: | |
4080 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
4081 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: | |
4082 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
a06ea964 NC |
4083 | break; |
4084 | ||
7bcccb57 | 4085 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
a6bb11b2 YZ |
4086 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
4087 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: | |
a06ea964 NC |
4088 | if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx)) |
4089 | { | |
4090 | bfd_boolean need_relocs = FALSE; | |
4091 | int indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
4092 | bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx); | |
4093 | ||
4094 | need_relocs = (h == NULL | |
4095 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
4096 | || h->root.type != bfd_link_hash_undefweak); | |
4097 | ||
4098 | BFD_ASSERT (globals->root.srelgot != NULL); | |
4099 | BFD_ASSERT (globals->root.sgot != NULL); | |
4100 | ||
4101 | if (need_relocs) | |
4102 | { | |
4103 | bfd_byte *loc; | |
4104 | Elf_Internal_Rela rela; | |
a6bb11b2 YZ |
4105 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC)); |
4106 | ||
a06ea964 NC |
4107 | rela.r_addend = 0; |
4108 | rela.r_offset = (globals->root.sgotplt->output_section->vma | |
4109 | + globals->root.sgotplt->output_offset | |
4110 | + off + globals->sgotplt_jump_table_size); | |
4111 | ||
4112 | if (indx == 0) | |
4113 | rela.r_addend = relocation - dtpoff_base (info); | |
4114 | ||
4115 | /* Allocate the next available slot in the PLT reloc | |
4116 | section to hold our R_AARCH64_TLSDESC, the next | |
4117 | available slot is determined from reloc_count, | |
4118 | which we step. But note, reloc_count was | |
4119 | artifically moved down while allocating slots for | |
4120 | real PLT relocs such that all of the PLT relocs | |
4121 | will fit above the initial reloc_count and the | |
4122 | extra stuff will fit below. */ | |
4123 | loc = globals->root.srelplt->contents; | |
4124 | loc += globals->root.srelplt->reloc_count++ | |
4125 | * RELOC_SIZE (globals); | |
4126 | ||
cec5225b | 4127 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 4128 | |
cec5225b | 4129 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
4130 | globals->root.sgotplt->contents + off + |
4131 | globals->sgotplt_jump_table_size); | |
cec5225b | 4132 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
4133 | globals->root.sgotplt->contents + off + |
4134 | globals->sgotplt_jump_table_size + | |
4135 | GOT_ENTRY_SIZE); | |
4136 | } | |
4137 | ||
4138 | symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx); | |
4139 | } | |
4140 | break; | |
a6bb11b2 YZ |
4141 | default: |
4142 | break; | |
a06ea964 NC |
4143 | } |
4144 | ||
4145 | if (!save_addend) | |
4146 | addend = 0; | |
4147 | ||
4148 | ||
4149 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections | |
4150 | because such sections are not SEC_ALLOC and thus ld.so will | |
4151 | not process them. */ | |
4152 | if (unresolved_reloc | |
4153 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
4154 | && h->def_dynamic) | |
4155 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
4156 | +rel->r_offset) != (bfd_vma) - 1) | |
4157 | { | |
4158 | (*_bfd_error_handler) | |
4159 | (_ | |
4160 | ("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), | |
4161 | input_bfd, input_section, (long) rel->r_offset, howto->name, | |
4162 | h->root.root.string); | |
4163 | return FALSE; | |
4164 | } | |
4165 | ||
4166 | if (r != bfd_reloc_ok && r != bfd_reloc_continue) | |
4167 | { | |
4168 | switch (r) | |
4169 | { | |
4170 | case bfd_reloc_overflow: | |
4171 | /* If the overflowing reloc was to an undefined symbol, | |
4172 | we have already printed one error message and there | |
4173 | is no point complaining again. */ | |
4174 | if ((!h || | |
4175 | h->root.type != bfd_link_hash_undefined) | |
4176 | && (!((*info->callbacks->reloc_overflow) | |
4177 | (info, (h ? &h->root : NULL), name, howto->name, | |
4178 | (bfd_vma) 0, input_bfd, input_section, | |
4179 | rel->r_offset)))) | |
4180 | return FALSE; | |
4181 | break; | |
4182 | ||
4183 | case bfd_reloc_undefined: | |
4184 | if (!((*info->callbacks->undefined_symbol) | |
4185 | (info, name, input_bfd, input_section, | |
4186 | rel->r_offset, TRUE))) | |
4187 | return FALSE; | |
4188 | break; | |
4189 | ||
4190 | case bfd_reloc_outofrange: | |
4191 | error_message = _("out of range"); | |
4192 | goto common_error; | |
4193 | ||
4194 | case bfd_reloc_notsupported: | |
4195 | error_message = _("unsupported relocation"); | |
4196 | goto common_error; | |
4197 | ||
4198 | case bfd_reloc_dangerous: | |
4199 | /* error_message should already be set. */ | |
4200 | goto common_error; | |
4201 | ||
4202 | default: | |
4203 | error_message = _("unknown error"); | |
4204 | /* Fall through. */ | |
4205 | ||
4206 | common_error: | |
4207 | BFD_ASSERT (error_message != NULL); | |
4208 | if (!((*info->callbacks->reloc_dangerous) | |
4209 | (info, error_message, input_bfd, input_section, | |
4210 | rel->r_offset))) | |
4211 | return FALSE; | |
4212 | break; | |
4213 | } | |
4214 | } | |
4215 | } | |
4216 | ||
4217 | return TRUE; | |
4218 | } | |
4219 | ||
4220 | /* Set the right machine number. */ | |
4221 | ||
4222 | static bfd_boolean | |
cec5225b | 4223 | elfNN_aarch64_object_p (bfd *abfd) |
a06ea964 | 4224 | { |
cec5225b YZ |
4225 | #if ARCH_SIZE == 32 |
4226 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32); | |
4227 | #else | |
a06ea964 | 4228 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64); |
cec5225b | 4229 | #endif |
a06ea964 NC |
4230 | return TRUE; |
4231 | } | |
4232 | ||
4233 | /* Function to keep AArch64 specific flags in the ELF header. */ | |
4234 | ||
4235 | static bfd_boolean | |
cec5225b | 4236 | elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags) |
a06ea964 NC |
4237 | { |
4238 | if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags) | |
4239 | { | |
4240 | } | |
4241 | else | |
4242 | { | |
4243 | elf_elfheader (abfd)->e_flags = flags; | |
4244 | elf_flags_init (abfd) = TRUE; | |
4245 | } | |
4246 | ||
4247 | return TRUE; | |
4248 | } | |
4249 | ||
4250 | /* Copy backend specific data from one object module to another. */ | |
4251 | ||
4252 | static bfd_boolean | |
cec5225b | 4253 | elfNN_aarch64_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
a06ea964 NC |
4254 | { |
4255 | flagword in_flags; | |
4256 | ||
4257 | if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd)) | |
4258 | return TRUE; | |
4259 | ||
4260 | in_flags = elf_elfheader (ibfd)->e_flags; | |
4261 | ||
4262 | elf_elfheader (obfd)->e_flags = in_flags; | |
4263 | elf_flags_init (obfd) = TRUE; | |
4264 | ||
4265 | /* Also copy the EI_OSABI field. */ | |
4266 | elf_elfheader (obfd)->e_ident[EI_OSABI] = | |
4267 | elf_elfheader (ibfd)->e_ident[EI_OSABI]; | |
4268 | ||
4269 | /* Copy object attributes. */ | |
4270 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
4271 | ||
4272 | return TRUE; | |
4273 | } | |
4274 | ||
4275 | /* Merge backend specific data from an object file to the output | |
4276 | object file when linking. */ | |
4277 | ||
4278 | static bfd_boolean | |
cec5225b | 4279 | elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
a06ea964 NC |
4280 | { |
4281 | flagword out_flags; | |
4282 | flagword in_flags; | |
4283 | bfd_boolean flags_compatible = TRUE; | |
4284 | asection *sec; | |
4285 | ||
4286 | /* Check if we have the same endianess. */ | |
4287 | if (!_bfd_generic_verify_endian_match (ibfd, obfd)) | |
4288 | return FALSE; | |
4289 | ||
4290 | if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd)) | |
4291 | return TRUE; | |
4292 | ||
4293 | /* The input BFD must have had its flags initialised. */ | |
4294 | /* The following seems bogus to me -- The flags are initialized in | |
4295 | the assembler but I don't think an elf_flags_init field is | |
4296 | written into the object. */ | |
4297 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ | |
4298 | ||
4299 | in_flags = elf_elfheader (ibfd)->e_flags; | |
4300 | out_flags = elf_elfheader (obfd)->e_flags; | |
4301 | ||
4302 | if (!elf_flags_init (obfd)) | |
4303 | { | |
4304 | /* If the input is the default architecture and had the default | |
4305 | flags then do not bother setting the flags for the output | |
4306 | architecture, instead allow future merges to do this. If no | |
4307 | future merges ever set these flags then they will retain their | |
4308 | uninitialised values, which surprise surprise, correspond | |
4309 | to the default values. */ | |
4310 | if (bfd_get_arch_info (ibfd)->the_default | |
4311 | && elf_elfheader (ibfd)->e_flags == 0) | |
4312 | return TRUE; | |
4313 | ||
4314 | elf_flags_init (obfd) = TRUE; | |
4315 | elf_elfheader (obfd)->e_flags = in_flags; | |
4316 | ||
4317 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
4318 | && bfd_get_arch_info (obfd)->the_default) | |
4319 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
4320 | bfd_get_mach (ibfd)); | |
4321 | ||
4322 | return TRUE; | |
4323 | } | |
4324 | ||
4325 | /* Identical flags must be compatible. */ | |
4326 | if (in_flags == out_flags) | |
4327 | return TRUE; | |
4328 | ||
4329 | /* Check to see if the input BFD actually contains any sections. If | |
4330 | not, its flags may not have been initialised either, but it | |
4331 | cannot actually cause any incompatiblity. Do not short-circuit | |
4332 | dynamic objects; their section list may be emptied by | |
4333 | elf_link_add_object_symbols. | |
4334 | ||
4335 | Also check to see if there are no code sections in the input. | |
4336 | In this case there is no need to check for code specific flags. | |
4337 | XXX - do we need to worry about floating-point format compatability | |
4338 | in data sections ? */ | |
4339 | if (!(ibfd->flags & DYNAMIC)) | |
4340 | { | |
4341 | bfd_boolean null_input_bfd = TRUE; | |
4342 | bfd_boolean only_data_sections = TRUE; | |
4343 | ||
4344 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
4345 | { | |
4346 | if ((bfd_get_section_flags (ibfd, sec) | |
4347 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
4348 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
4349 | only_data_sections = FALSE; | |
4350 | ||
4351 | null_input_bfd = FALSE; | |
4352 | break; | |
4353 | } | |
4354 | ||
4355 | if (null_input_bfd || only_data_sections) | |
4356 | return TRUE; | |
4357 | } | |
4358 | ||
4359 | return flags_compatible; | |
4360 | } | |
4361 | ||
4362 | /* Display the flags field. */ | |
4363 | ||
4364 | static bfd_boolean | |
cec5225b | 4365 | elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr) |
a06ea964 NC |
4366 | { |
4367 | FILE *file = (FILE *) ptr; | |
4368 | unsigned long flags; | |
4369 | ||
4370 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
4371 | ||
4372 | /* Print normal ELF private data. */ | |
4373 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
4374 | ||
4375 | flags = elf_elfheader (abfd)->e_flags; | |
4376 | /* Ignore init flag - it may not be set, despite the flags field | |
4377 | containing valid data. */ | |
4378 | ||
4379 | /* xgettext:c-format */ | |
4380 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
4381 | ||
4382 | if (flags) | |
4383 | fprintf (file, _("<Unrecognised flag bits set>")); | |
4384 | ||
4385 | fputc ('\n', file); | |
4386 | ||
4387 | return TRUE; | |
4388 | } | |
4389 | ||
4390 | /* Update the got entry reference counts for the section being removed. */ | |
4391 | ||
4392 | static bfd_boolean | |
cec5225b | 4393 | elfNN_aarch64_gc_sweep_hook (bfd *abfd, |
cb8af559 NC |
4394 | struct bfd_link_info *info, |
4395 | asection *sec, | |
4396 | const Elf_Internal_Rela * relocs) | |
a06ea964 | 4397 | { |
cec5225b | 4398 | struct elf_aarch64_link_hash_table *htab; |
59c108f7 NC |
4399 | Elf_Internal_Shdr *symtab_hdr; |
4400 | struct elf_link_hash_entry **sym_hashes; | |
cb8af559 | 4401 | struct elf_aarch64_local_symbol *locals; |
59c108f7 NC |
4402 | const Elf_Internal_Rela *rel, *relend; |
4403 | ||
4404 | if (info->relocatable) | |
4405 | return TRUE; | |
4406 | ||
cec5225b | 4407 | htab = elf_aarch64_hash_table (info); |
59c108f7 NC |
4408 | |
4409 | if (htab == NULL) | |
4410 | return FALSE; | |
4411 | ||
4412 | elf_section_data (sec)->local_dynrel = NULL; | |
4413 | ||
4414 | symtab_hdr = &elf_symtab_hdr (abfd); | |
4415 | sym_hashes = elf_sym_hashes (abfd); | |
4416 | ||
cec5225b | 4417 | locals = elf_aarch64_locals (abfd); |
59c108f7 NC |
4418 | |
4419 | relend = relocs + sec->reloc_count; | |
4420 | for (rel = relocs; rel < relend; rel++) | |
4421 | { | |
4422 | unsigned long r_symndx; | |
4423 | unsigned int r_type; | |
4424 | struct elf_link_hash_entry *h = NULL; | |
4425 | ||
cec5225b | 4426 | r_symndx = ELFNN_R_SYM (rel->r_info); |
8847944f | 4427 | |
59c108f7 NC |
4428 | if (r_symndx >= symtab_hdr->sh_info) |
4429 | { | |
cec5225b | 4430 | struct elf_aarch64_link_hash_entry *eh; |
8847944f WN |
4431 | struct elf_dyn_relocs **pp; |
4432 | struct elf_dyn_relocs *p; | |
4433 | ||
59c108f7 NC |
4434 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
4435 | while (h->root.type == bfd_link_hash_indirect | |
4436 | || h->root.type == bfd_link_hash_warning) | |
4437 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
cec5225b | 4438 | eh = (struct elf_aarch64_link_hash_entry *) h; |
8847944f WN |
4439 | |
4440 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
4441 | { | |
4442 | if (p->sec == sec) | |
4443 | { | |
4444 | /* Everything must go for SEC. */ | |
4445 | *pp = p->next; | |
4446 | break; | |
4447 | } | |
4448 | } | |
59c108f7 NC |
4449 | } |
4450 | else | |
4451 | { | |
4452 | Elf_Internal_Sym *isym; | |
4453 | ||
8847944f | 4454 | /* A local symbol. */ |
59c108f7 NC |
4455 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
4456 | abfd, r_symndx); | |
8847944f WN |
4457 | if (isym == NULL) |
4458 | return FALSE; | |
59c108f7 NC |
4459 | } |
4460 | ||
cec5225b | 4461 | r_type = ELFNN_R_TYPE (rel->r_info); |
a6bb11b2 | 4462 | switch (aarch64_tls_transition (abfd,info, r_type, h ,r_symndx)) |
59c108f7 | 4463 | { |
a6bb11b2 | 4464 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
7bcccb57 MS |
4465 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
4466 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: | |
4467 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: | |
4468 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: | |
4469 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
4470 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: | |
4471 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: | |
a6bb11b2 | 4472 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
7bcccb57 | 4473 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a6bb11b2 | 4474 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 4475 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
7bcccb57 | 4476 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
a6bb11b2 | 4477 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
7bcccb57 | 4478 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: |
a6bb11b2 | 4479 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: |
a6bb11b2 YZ |
4480 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: |
4481 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
7bcccb57 MS |
4482 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: |
4483 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
4484 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
a6bb11b2 | 4485 | if (h != NULL) |
59c108f7 NC |
4486 | { |
4487 | if (h->got.refcount > 0) | |
4488 | h->got.refcount -= 1; | |
4489 | } | |
cb8af559 | 4490 | else if (locals != NULL) |
59c108f7 | 4491 | { |
cb8af559 NC |
4492 | if (locals[r_symndx].got_refcount > 0) |
4493 | locals[r_symndx].got_refcount -= 1; | |
59c108f7 NC |
4494 | } |
4495 | break; | |
4496 | ||
a6bb11b2 YZ |
4497 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
4498 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
4499 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
59c108f7 NC |
4500 | if (h != NULL && info->executable) |
4501 | { | |
4502 | if (h->plt.refcount > 0) | |
4503 | h->plt.refcount -= 1; | |
4504 | } | |
4505 | break; | |
4506 | ||
a6bb11b2 YZ |
4507 | case BFD_RELOC_AARCH64_CALL26: |
4508 | case BFD_RELOC_AARCH64_JUMP26: | |
4509 | /* If this is a local symbol then we resolve it | |
4510 | directly without creating a PLT entry. */ | |
59c108f7 NC |
4511 | if (h == NULL) |
4512 | continue; | |
4513 | ||
4514 | if (h->plt.refcount > 0) | |
4515 | h->plt.refcount -= 1; | |
4516 | break; | |
4517 | ||
a6bb11b2 | 4518 | case BFD_RELOC_AARCH64_NN: |
8847944f | 4519 | if (h != NULL && info->executable) |
59c108f7 NC |
4520 | { |
4521 | if (h->plt.refcount > 0) | |
4522 | h->plt.refcount -= 1; | |
4523 | } | |
4524 | break; | |
cec5225b | 4525 | |
59c108f7 NC |
4526 | default: |
4527 | break; | |
4528 | } | |
4529 | } | |
4530 | ||
a06ea964 NC |
4531 | return TRUE; |
4532 | } | |
4533 | ||
4534 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
4535 | regular object. The current definition is in some section of the | |
4536 | dynamic object, but we're not including those sections. We have to | |
4537 | change the definition to something the rest of the link can | |
4538 | understand. */ | |
4539 | ||
4540 | static bfd_boolean | |
cec5225b | 4541 | elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info, |
a06ea964 NC |
4542 | struct elf_link_hash_entry *h) |
4543 | { | |
cec5225b | 4544 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
4545 | asection *s; |
4546 | ||
4547 | /* If this is a function, put it in the procedure linkage table. We | |
4548 | will fill in the contents of the procedure linkage table later, | |
4549 | when we know the address of the .got section. */ | |
8847944f | 4550 | if (h->type == STT_FUNC || h->needs_plt) |
a06ea964 NC |
4551 | { |
4552 | if (h->plt.refcount <= 0 | |
8847944f WN |
4553 | || SYMBOL_CALLS_LOCAL (info, h) |
4554 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
4555 | && h->root.type == bfd_link_hash_undefweak)) | |
a06ea964 NC |
4556 | { |
4557 | /* This case can occur if we saw a CALL26 reloc in | |
4558 | an input file, but the symbol wasn't referred to | |
4559 | by a dynamic object or all references were | |
4560 | garbage collected. In which case we can end up | |
4561 | resolving. */ | |
4562 | h->plt.offset = (bfd_vma) - 1; | |
4563 | h->needs_plt = 0; | |
4564 | } | |
4565 | ||
4566 | return TRUE; | |
4567 | } | |
4568 | else | |
4569 | /* It's possible that we incorrectly decided a .plt reloc was | |
4570 | needed for an R_X86_64_PC32 reloc to a non-function sym in | |
4571 | check_relocs. We can't decide accurately between function and | |
4572 | non-function syms in check-relocs; Objects loaded later in | |
4573 | the link may change h->type. So fix it now. */ | |
4574 | h->plt.offset = (bfd_vma) - 1; | |
4575 | ||
4576 | ||
4577 | /* If this is a weak symbol, and there is a real definition, the | |
4578 | processor independent code will have arranged for us to see the | |
4579 | real definition first, and we can just use the same value. */ | |
4580 | if (h->u.weakdef != NULL) | |
4581 | { | |
4582 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
4583 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
4584 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
4585 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
4586 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) | |
4587 | h->non_got_ref = h->u.weakdef->non_got_ref; | |
4588 | return TRUE; | |
4589 | } | |
4590 | ||
4591 | /* If we are creating a shared library, we must presume that the | |
4592 | only references to the symbol are via the global offset table. | |
4593 | For such cases we need not do anything here; the relocations will | |
4594 | be handled correctly by relocate_section. */ | |
4595 | if (info->shared) | |
4596 | return TRUE; | |
4597 | ||
4598 | /* If there are no references to this symbol that do not use the | |
4599 | GOT, we don't need to generate a copy reloc. */ | |
4600 | if (!h->non_got_ref) | |
4601 | return TRUE; | |
4602 | ||
4603 | /* If -z nocopyreloc was given, we won't generate them either. */ | |
4604 | if (info->nocopyreloc) | |
4605 | { | |
4606 | h->non_got_ref = 0; | |
4607 | return TRUE; | |
4608 | } | |
4609 | ||
4610 | /* We must allocate the symbol in our .dynbss section, which will | |
4611 | become part of the .bss section of the executable. There will be | |
4612 | an entry for this symbol in the .dynsym section. The dynamic | |
4613 | object will contain position independent code, so all references | |
4614 | from the dynamic object to this symbol will go through the global | |
4615 | offset table. The dynamic linker will use the .dynsym entry to | |
4616 | determine the address it must put in the global offset table, so | |
4617 | both the dynamic object and the regular object will refer to the | |
4618 | same memory location for the variable. */ | |
4619 | ||
cec5225b | 4620 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
4621 | |
4622 | /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker | |
4623 | to copy the initial value out of the dynamic object and into the | |
4624 | runtime process image. */ | |
4625 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) | |
4626 | { | |
4627 | htab->srelbss->size += RELOC_SIZE (htab); | |
4628 | h->needs_copy = 1; | |
4629 | } | |
4630 | ||
4631 | s = htab->sdynbss; | |
4632 | ||
4633 | return _bfd_elf_adjust_dynamic_copy (h, s); | |
4634 | ||
4635 | } | |
4636 | ||
4637 | static bfd_boolean | |
cec5225b | 4638 | elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number) |
a06ea964 NC |
4639 | { |
4640 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 4641 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
4642 | if (locals == NULL) |
4643 | { | |
4644 | locals = (struct elf_aarch64_local_symbol *) | |
4645 | bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol)); | |
4646 | if (locals == NULL) | |
4647 | return FALSE; | |
cec5225b | 4648 | elf_aarch64_locals (abfd) = locals; |
a06ea964 NC |
4649 | } |
4650 | return TRUE; | |
4651 | } | |
4652 | ||
cc0efaa8 MS |
4653 | /* Create the .got section to hold the global offset table. */ |
4654 | ||
4655 | static bfd_boolean | |
4656 | aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) | |
4657 | { | |
4658 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
4659 | flagword flags; | |
4660 | asection *s; | |
4661 | struct elf_link_hash_entry *h; | |
4662 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
4663 | ||
4664 | /* This function may be called more than once. */ | |
4665 | s = bfd_get_linker_section (abfd, ".got"); | |
4666 | if (s != NULL) | |
4667 | return TRUE; | |
4668 | ||
4669 | flags = bed->dynamic_sec_flags; | |
4670 | ||
4671 | s = bfd_make_section_anyway_with_flags (abfd, | |
4672 | (bed->rela_plts_and_copies_p | |
4673 | ? ".rela.got" : ".rel.got"), | |
4674 | (bed->dynamic_sec_flags | |
4675 | | SEC_READONLY)); | |
4676 | if (s == NULL | |
4677 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
4678 | return FALSE; | |
4679 | htab->srelgot = s; | |
4680 | ||
4681 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); | |
4682 | if (s == NULL | |
4683 | || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
4684 | return FALSE; | |
4685 | htab->sgot = s; | |
4686 | htab->sgot->size += GOT_ENTRY_SIZE; | |
4687 | ||
4688 | if (bed->want_got_sym) | |
4689 | { | |
4690 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
4691 | (or .got.plt) section. We don't do this in the linker script | |
4692 | because we don't want to define the symbol if we are not creating | |
4693 | a global offset table. */ | |
4694 | h = _bfd_elf_define_linkage_sym (abfd, info, s, | |
4695 | "_GLOBAL_OFFSET_TABLE_"); | |
4696 | elf_hash_table (info)->hgot = h; | |
4697 | if (h == NULL) | |
4698 | return FALSE; | |
4699 | } | |
4700 | ||
4701 | if (bed->want_got_plt) | |
4702 | { | |
4703 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); | |
4704 | if (s == NULL | |
4705 | || !bfd_set_section_alignment (abfd, s, | |
4706 | bed->s->log_file_align)) | |
4707 | return FALSE; | |
4708 | htab->sgotplt = s; | |
4709 | } | |
4710 | ||
4711 | /* The first bit of the global offset table is the header. */ | |
4712 | s->size += bed->got_header_size; | |
4713 | ||
4714 | return TRUE; | |
4715 | } | |
4716 | ||
a06ea964 NC |
4717 | /* Look through the relocs for a section during the first phase. */ |
4718 | ||
4719 | static bfd_boolean | |
cec5225b | 4720 | elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
a06ea964 NC |
4721 | asection *sec, const Elf_Internal_Rela *relocs) |
4722 | { | |
4723 | Elf_Internal_Shdr *symtab_hdr; | |
4724 | struct elf_link_hash_entry **sym_hashes; | |
4725 | const Elf_Internal_Rela *rel; | |
4726 | const Elf_Internal_Rela *rel_end; | |
4727 | asection *sreloc; | |
4728 | ||
cec5225b | 4729 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 4730 | |
a06ea964 NC |
4731 | if (info->relocatable) |
4732 | return TRUE; | |
4733 | ||
4734 | BFD_ASSERT (is_aarch64_elf (abfd)); | |
4735 | ||
cec5225b | 4736 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
4737 | sreloc = NULL; |
4738 | ||
4739 | symtab_hdr = &elf_symtab_hdr (abfd); | |
4740 | sym_hashes = elf_sym_hashes (abfd); | |
a06ea964 NC |
4741 | |
4742 | rel_end = relocs + sec->reloc_count; | |
4743 | for (rel = relocs; rel < rel_end; rel++) | |
4744 | { | |
4745 | struct elf_link_hash_entry *h; | |
4746 | unsigned long r_symndx; | |
4747 | unsigned int r_type; | |
a6bb11b2 | 4748 | bfd_reloc_code_real_type bfd_r_type; |
a06ea964 | 4749 | |
cec5225b YZ |
4750 | r_symndx = ELFNN_R_SYM (rel->r_info); |
4751 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 NC |
4752 | |
4753 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
4754 | { | |
4755 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd, | |
4756 | r_symndx); | |
4757 | return FALSE; | |
4758 | } | |
4759 | ||
ed5acf27 | 4760 | if (r_symndx < symtab_hdr->sh_info) |
8847944f | 4761 | h = NULL; |
a06ea964 NC |
4762 | else |
4763 | { | |
4764 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4765 | while (h->root.type == bfd_link_hash_indirect | |
4766 | || h->root.type == bfd_link_hash_warning) | |
4767 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 AM |
4768 | |
4769 | /* PR15323, ref flags aren't set for references in the same | |
4770 | object. */ | |
4771 | h->root.non_ir_ref = 1; | |
a06ea964 NC |
4772 | } |
4773 | ||
4774 | /* Could be done earlier, if h were already available. */ | |
a6bb11b2 | 4775 | bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx); |
a06ea964 | 4776 | |
a6bb11b2 | 4777 | switch (bfd_r_type) |
a06ea964 | 4778 | { |
a6bb11b2 | 4779 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
4780 | |
4781 | /* We don't need to handle relocs into sections not going into | |
4782 | the "real" output. */ | |
4783 | if ((sec->flags & SEC_ALLOC) == 0) | |
4784 | break; | |
4785 | ||
4786 | if (h != NULL) | |
4787 | { | |
4788 | if (!info->shared) | |
4789 | h->non_got_ref = 1; | |
4790 | ||
4791 | h->plt.refcount += 1; | |
4792 | h->pointer_equality_needed = 1; | |
4793 | } | |
4794 | ||
4795 | /* No need to do anything if we're not creating a shared | |
4796 | object. */ | |
4797 | if (! info->shared) | |
4798 | break; | |
4799 | ||
4800 | { | |
4801 | struct elf_dyn_relocs *p; | |
4802 | struct elf_dyn_relocs **head; | |
4803 | ||
4804 | /* We must copy these reloc types into the output file. | |
4805 | Create a reloc section in dynobj and make room for | |
4806 | this reloc. */ | |
4807 | if (sreloc == NULL) | |
4808 | { | |
4809 | if (htab->root.dynobj == NULL) | |
4810 | htab->root.dynobj = abfd; | |
4811 | ||
4812 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
0608afa7 | 4813 | (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE); |
a06ea964 NC |
4814 | |
4815 | if (sreloc == NULL) | |
4816 | return FALSE; | |
4817 | } | |
4818 | ||
4819 | /* If this is a global symbol, we count the number of | |
4820 | relocations we need for this symbol. */ | |
4821 | if (h != NULL) | |
4822 | { | |
cec5225b YZ |
4823 | struct elf_aarch64_link_hash_entry *eh; |
4824 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
4825 | head = &eh->dyn_relocs; |
4826 | } | |
4827 | else | |
4828 | { | |
4829 | /* Track dynamic relocs needed for local syms too. | |
4830 | We really need local syms available to do this | |
4831 | easily. Oh well. */ | |
4832 | ||
4833 | asection *s; | |
4834 | void **vpp; | |
8847944f | 4835 | Elf_Internal_Sym *isym; |
a06ea964 NC |
4836 | |
4837 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
4838 | abfd, r_symndx); | |
4839 | if (isym == NULL) | |
4840 | return FALSE; | |
4841 | ||
4842 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4843 | if (s == NULL) | |
4844 | s = sec; | |
4845 | ||
4846 | /* Beware of type punned pointers vs strict aliasing | |
4847 | rules. */ | |
4848 | vpp = &(elf_section_data (s)->local_dynrel); | |
4849 | head = (struct elf_dyn_relocs **) vpp; | |
4850 | } | |
4851 | ||
4852 | p = *head; | |
4853 | if (p == NULL || p->sec != sec) | |
4854 | { | |
4855 | bfd_size_type amt = sizeof *p; | |
4856 | p = ((struct elf_dyn_relocs *) | |
4857 | bfd_zalloc (htab->root.dynobj, amt)); | |
4858 | if (p == NULL) | |
4859 | return FALSE; | |
4860 | p->next = *head; | |
4861 | *head = p; | |
4862 | p->sec = sec; | |
4863 | } | |
4864 | ||
4865 | p->count += 1; | |
4866 | ||
4867 | } | |
4868 | break; | |
4869 | ||
4870 | /* RR: We probably want to keep a consistency check that | |
4871 | there are no dangling GOT_PAGE relocs. */ | |
a6bb11b2 | 4872 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
7bcccb57 MS |
4873 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
4874 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: | |
4875 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: | |
4876 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: | |
4877 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
4878 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: | |
4879 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: | |
a6bb11b2 | 4880 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
7bcccb57 | 4881 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a6bb11b2 | 4882 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 4883 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
7bcccb57 | 4884 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
a6bb11b2 | 4885 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
7bcccb57 | 4886 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: |
a6bb11b2 | 4887 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: |
a6bb11b2 YZ |
4888 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: |
4889 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
7bcccb57 MS |
4890 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: |
4891 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
4892 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
a06ea964 NC |
4893 | { |
4894 | unsigned got_type; | |
4895 | unsigned old_got_type; | |
4896 | ||
a6bb11b2 | 4897 | got_type = aarch64_reloc_got_type (bfd_r_type); |
a06ea964 NC |
4898 | |
4899 | if (h) | |
4900 | { | |
4901 | h->got.refcount += 1; | |
cec5225b | 4902 | old_got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
4903 | } |
4904 | else | |
4905 | { | |
4906 | struct elf_aarch64_local_symbol *locals; | |
4907 | ||
cec5225b | 4908 | if (!elfNN_aarch64_allocate_local_symbols |
a06ea964 NC |
4909 | (abfd, symtab_hdr->sh_info)) |
4910 | return FALSE; | |
4911 | ||
cec5225b | 4912 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
4913 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
4914 | locals[r_symndx].got_refcount += 1; | |
4915 | old_got_type = locals[r_symndx].got_type; | |
4916 | } | |
4917 | ||
4918 | /* If a variable is accessed with both general dynamic TLS | |
4919 | methods, two slots may be created. */ | |
4920 | if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type)) | |
4921 | got_type |= old_got_type; | |
4922 | ||
4923 | /* We will already have issued an error message if there | |
4924 | is a TLS/non-TLS mismatch, based on the symbol type. | |
4925 | So just combine any TLS types needed. */ | |
4926 | if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL | |
4927 | && got_type != GOT_NORMAL) | |
4928 | got_type |= old_got_type; | |
4929 | ||
4930 | /* If the symbol is accessed by both IE and GD methods, we | |
4931 | are able to relax. Turn off the GD flag, without | |
4932 | messing up with any other kind of TLS types that may be | |
4933 | involved. */ | |
4934 | if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type)) | |
4935 | got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD); | |
4936 | ||
4937 | if (old_got_type != got_type) | |
4938 | { | |
4939 | if (h != NULL) | |
cec5225b | 4940 | elf_aarch64_hash_entry (h)->got_type = got_type; |
a06ea964 NC |
4941 | else |
4942 | { | |
4943 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 4944 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
4945 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
4946 | locals[r_symndx].got_type = got_type; | |
4947 | } | |
4948 | } | |
4949 | ||
cc0efaa8 MS |
4950 | if (htab->root.dynobj == NULL) |
4951 | htab->root.dynobj = abfd; | |
4952 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
4953 | return FALSE; | |
a06ea964 NC |
4954 | break; |
4955 | } | |
4956 | ||
a6bb11b2 YZ |
4957 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
4958 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
4959 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
a06ea964 NC |
4960 | if (h != NULL && info->executable) |
4961 | { | |
4962 | /* If this reloc is in a read-only section, we might | |
4963 | need a copy reloc. We can't check reliably at this | |
4964 | stage whether the section is read-only, as input | |
4965 | sections have not yet been mapped to output sections. | |
4966 | Tentatively set the flag for now, and correct in | |
4967 | adjust_dynamic_symbol. */ | |
4968 | h->non_got_ref = 1; | |
4969 | h->plt.refcount += 1; | |
4970 | h->pointer_equality_needed = 1; | |
4971 | } | |
4972 | /* FIXME:: RR need to handle these in shared libraries | |
4973 | and essentially bomb out as these being non-PIC | |
4974 | relocations in shared libraries. */ | |
4975 | break; | |
4976 | ||
a6bb11b2 YZ |
4977 | case BFD_RELOC_AARCH64_CALL26: |
4978 | case BFD_RELOC_AARCH64_JUMP26: | |
a06ea964 NC |
4979 | /* If this is a local symbol then we resolve it |
4980 | directly without creating a PLT entry. */ | |
4981 | if (h == NULL) | |
4982 | continue; | |
4983 | ||
4984 | h->needs_plt = 1; | |
8847944f | 4985 | h->plt.refcount += 1; |
a06ea964 | 4986 | break; |
a6bb11b2 YZ |
4987 | |
4988 | default: | |
4989 | break; | |
a06ea964 NC |
4990 | } |
4991 | } | |
a6bb11b2 | 4992 | |
a06ea964 NC |
4993 | return TRUE; |
4994 | } | |
4995 | ||
4996 | /* Treat mapping symbols as special target symbols. */ | |
4997 | ||
4998 | static bfd_boolean | |
cec5225b | 4999 | elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
5000 | asymbol *sym) |
5001 | { | |
5002 | return bfd_is_aarch64_special_symbol_name (sym->name, | |
5003 | BFD_AARCH64_SPECIAL_SYM_TYPE_ANY); | |
5004 | } | |
5005 | ||
5006 | /* This is a copy of elf_find_function () from elf.c except that | |
5007 | AArch64 mapping symbols are ignored when looking for function names. */ | |
5008 | ||
5009 | static bfd_boolean | |
5010 | aarch64_elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, | |
5011 | asection *section, | |
5012 | asymbol **symbols, | |
5013 | bfd_vma offset, | |
5014 | const char **filename_ptr, | |
5015 | const char **functionname_ptr) | |
5016 | { | |
5017 | const char *filename = NULL; | |
5018 | asymbol *func = NULL; | |
5019 | bfd_vma low_func = 0; | |
5020 | asymbol **p; | |
5021 | ||
5022 | for (p = symbols; *p != NULL; p++) | |
5023 | { | |
5024 | elf_symbol_type *q; | |
5025 | ||
5026 | q = (elf_symbol_type *) * p; | |
5027 | ||
5028 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) | |
5029 | { | |
5030 | default: | |
5031 | break; | |
5032 | case STT_FILE: | |
5033 | filename = bfd_asymbol_name (&q->symbol); | |
5034 | break; | |
5035 | case STT_FUNC: | |
5036 | case STT_NOTYPE: | |
5037 | /* Skip mapping symbols. */ | |
5038 | if ((q->symbol.flags & BSF_LOCAL) | |
5039 | && (bfd_is_aarch64_special_symbol_name | |
5040 | (q->symbol.name, BFD_AARCH64_SPECIAL_SYM_TYPE_ANY))) | |
5041 | continue; | |
5042 | /* Fall through. */ | |
5043 | if (bfd_get_section (&q->symbol) == section | |
5044 | && q->symbol.value >= low_func && q->symbol.value <= offset) | |
5045 | { | |
5046 | func = (asymbol *) q; | |
5047 | low_func = q->symbol.value; | |
5048 | } | |
5049 | break; | |
5050 | } | |
5051 | } | |
5052 | ||
5053 | if (func == NULL) | |
5054 | return FALSE; | |
5055 | ||
5056 | if (filename_ptr) | |
5057 | *filename_ptr = filename; | |
5058 | if (functionname_ptr) | |
5059 | *functionname_ptr = bfd_asymbol_name (func); | |
5060 | ||
5061 | return TRUE; | |
5062 | } | |
5063 | ||
5064 | ||
5065 | /* Find the nearest line to a particular section and offset, for error | |
5066 | reporting. This code is a duplicate of the code in elf.c, except | |
5067 | that it uses aarch64_elf_find_function. */ | |
5068 | ||
5069 | static bfd_boolean | |
cec5225b | 5070 | elfNN_aarch64_find_nearest_line (bfd *abfd, |
a06ea964 NC |
5071 | asection *section, |
5072 | asymbol **symbols, | |
5073 | bfd_vma offset, | |
5074 | const char **filename_ptr, | |
5075 | const char **functionname_ptr, | |
5076 | unsigned int *line_ptr) | |
5077 | { | |
5078 | bfd_boolean found = FALSE; | |
5079 | ||
5080 | /* We skip _bfd_dwarf1_find_nearest_line since no known AArch64 | |
5081 | toolchain uses it. */ | |
5082 | ||
5083 | if (_bfd_dwarf2_find_nearest_line (abfd, dwarf_debug_sections, | |
5084 | section, symbols, offset, | |
5085 | filename_ptr, functionname_ptr, | |
5086 | line_ptr, NULL, 0, | |
5087 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
5088 | { | |
5089 | if (!*functionname_ptr) | |
5090 | aarch64_elf_find_function (abfd, section, symbols, offset, | |
5091 | *filename_ptr ? NULL : filename_ptr, | |
5092 | functionname_ptr); | |
5093 | ||
5094 | return TRUE; | |
5095 | } | |
5096 | ||
5097 | if (!_bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
5098 | &found, filename_ptr, | |
5099 | functionname_ptr, line_ptr, | |
5100 | &elf_tdata (abfd)->line_info)) | |
5101 | return FALSE; | |
5102 | ||
5103 | if (found && (*functionname_ptr || *line_ptr)) | |
5104 | return TRUE; | |
5105 | ||
5106 | if (symbols == NULL) | |
5107 | return FALSE; | |
5108 | ||
5109 | if (!aarch64_elf_find_function (abfd, section, symbols, offset, | |
5110 | filename_ptr, functionname_ptr)) | |
5111 | return FALSE; | |
5112 | ||
5113 | *line_ptr = 0; | |
5114 | return TRUE; | |
5115 | } | |
5116 | ||
5117 | static bfd_boolean | |
cec5225b | 5118 | elfNN_aarch64_find_inliner_info (bfd *abfd, |
a06ea964 NC |
5119 | const char **filename_ptr, |
5120 | const char **functionname_ptr, | |
5121 | unsigned int *line_ptr) | |
5122 | { | |
5123 | bfd_boolean found; | |
5124 | found = _bfd_dwarf2_find_inliner_info | |
5125 | (abfd, filename_ptr, | |
5126 | functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info); | |
5127 | return found; | |
5128 | } | |
5129 | ||
5130 | ||
5131 | static void | |
cec5225b | 5132 | elfNN_aarch64_post_process_headers (bfd *abfd, |
8847944f WN |
5133 | struct bfd_link_info *link_info |
5134 | ATTRIBUTE_UNUSED) | |
a06ea964 NC |
5135 | { |
5136 | Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */ | |
5137 | ||
5138 | i_ehdrp = elf_elfheader (abfd); | |
8847944f | 5139 | i_ehdrp->e_ident[EI_OSABI] = 0; |
a06ea964 NC |
5140 | i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION; |
5141 | } | |
5142 | ||
5143 | static enum elf_reloc_type_class | |
cec5225b | 5144 | elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
7e612e98 AM |
5145 | const asection *rel_sec ATTRIBUTE_UNUSED, |
5146 | const Elf_Internal_Rela *rela) | |
a06ea964 | 5147 | { |
cec5225b | 5148 | switch ((int) ELFNN_R_TYPE (rela->r_info)) |
a06ea964 | 5149 | { |
a6bb11b2 | 5150 | case AARCH64_R (RELATIVE): |
a06ea964 | 5151 | return reloc_class_relative; |
a6bb11b2 | 5152 | case AARCH64_R (JUMP_SLOT): |
a06ea964 | 5153 | return reloc_class_plt; |
a6bb11b2 | 5154 | case AARCH64_R (COPY): |
a06ea964 NC |
5155 | return reloc_class_copy; |
5156 | default: | |
5157 | return reloc_class_normal; | |
5158 | } | |
5159 | } | |
5160 | ||
5161 | /* Set the right machine number for an AArch64 ELF file. */ | |
5162 | ||
5163 | static bfd_boolean | |
cec5225b | 5164 | elfNN_aarch64_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr) |
a06ea964 NC |
5165 | { |
5166 | if (hdr->sh_type == SHT_NOTE) | |
5167 | *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
5168 | ||
5169 | return TRUE; | |
5170 | } | |
5171 | ||
5172 | /* Handle an AArch64 specific section when reading an object file. This is | |
5173 | called when bfd_section_from_shdr finds a section with an unknown | |
5174 | type. */ | |
5175 | ||
5176 | static bfd_boolean | |
cec5225b | 5177 | elfNN_aarch64_section_from_shdr (bfd *abfd, |
a06ea964 NC |
5178 | Elf_Internal_Shdr *hdr, |
5179 | const char *name, int shindex) | |
5180 | { | |
5181 | /* There ought to be a place to keep ELF backend specific flags, but | |
5182 | at the moment there isn't one. We just keep track of the | |
5183 | sections by their name, instead. Fortunately, the ABI gives | |
5184 | names for all the AArch64 specific sections, so we will probably get | |
5185 | away with this. */ | |
5186 | switch (hdr->sh_type) | |
5187 | { | |
5188 | case SHT_AARCH64_ATTRIBUTES: | |
5189 | break; | |
5190 | ||
5191 | default: | |
5192 | return FALSE; | |
5193 | } | |
5194 | ||
5195 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
5196 | return FALSE; | |
5197 | ||
5198 | return TRUE; | |
5199 | } | |
5200 | ||
5201 | /* A structure used to record a list of sections, independently | |
5202 | of the next and prev fields in the asection structure. */ | |
5203 | typedef struct section_list | |
5204 | { | |
5205 | asection *sec; | |
5206 | struct section_list *next; | |
5207 | struct section_list *prev; | |
5208 | } | |
5209 | section_list; | |
5210 | ||
5211 | /* Unfortunately we need to keep a list of sections for which | |
5212 | an _aarch64_elf_section_data structure has been allocated. This | |
cec5225b | 5213 | is because it is possible for functions like elfNN_aarch64_write_section |
a06ea964 NC |
5214 | to be called on a section which has had an elf_data_structure |
5215 | allocated for it (and so the used_by_bfd field is valid) but | |
5216 | for which the AArch64 extended version of this structure - the | |
5217 | _aarch64_elf_section_data structure - has not been allocated. */ | |
5218 | static section_list *sections_with_aarch64_elf_section_data = NULL; | |
5219 | ||
5220 | static void | |
5221 | record_section_with_aarch64_elf_section_data (asection *sec) | |
5222 | { | |
5223 | struct section_list *entry; | |
5224 | ||
5225 | entry = bfd_malloc (sizeof (*entry)); | |
5226 | if (entry == NULL) | |
5227 | return; | |
5228 | entry->sec = sec; | |
5229 | entry->next = sections_with_aarch64_elf_section_data; | |
5230 | entry->prev = NULL; | |
5231 | if (entry->next != NULL) | |
5232 | entry->next->prev = entry; | |
5233 | sections_with_aarch64_elf_section_data = entry; | |
5234 | } | |
5235 | ||
5236 | static struct section_list * | |
5237 | find_aarch64_elf_section_entry (asection *sec) | |
5238 | { | |
5239 | struct section_list *entry; | |
5240 | static struct section_list *last_entry = NULL; | |
5241 | ||
5242 | /* This is a short cut for the typical case where the sections are added | |
5243 | to the sections_with_aarch64_elf_section_data list in forward order and | |
5244 | then looked up here in backwards order. This makes a real difference | |
5245 | to the ld-srec/sec64k.exp linker test. */ | |
5246 | entry = sections_with_aarch64_elf_section_data; | |
5247 | if (last_entry != NULL) | |
5248 | { | |
5249 | if (last_entry->sec == sec) | |
5250 | entry = last_entry; | |
5251 | else if (last_entry->next != NULL && last_entry->next->sec == sec) | |
5252 | entry = last_entry->next; | |
5253 | } | |
5254 | ||
5255 | for (; entry; entry = entry->next) | |
5256 | if (entry->sec == sec) | |
5257 | break; | |
5258 | ||
5259 | if (entry) | |
5260 | /* Record the entry prior to this one - it is the entry we are | |
5261 | most likely to want to locate next time. Also this way if we | |
5262 | have been called from | |
5263 | unrecord_section_with_aarch64_elf_section_data () we will not | |
5264 | be caching a pointer that is about to be freed. */ | |
5265 | last_entry = entry->prev; | |
5266 | ||
5267 | return entry; | |
5268 | } | |
5269 | ||
5270 | static void | |
5271 | unrecord_section_with_aarch64_elf_section_data (asection *sec) | |
5272 | { | |
5273 | struct section_list *entry; | |
5274 | ||
5275 | entry = find_aarch64_elf_section_entry (sec); | |
5276 | ||
5277 | if (entry) | |
5278 | { | |
5279 | if (entry->prev != NULL) | |
5280 | entry->prev->next = entry->next; | |
5281 | if (entry->next != NULL) | |
5282 | entry->next->prev = entry->prev; | |
5283 | if (entry == sections_with_aarch64_elf_section_data) | |
5284 | sections_with_aarch64_elf_section_data = entry->next; | |
5285 | free (entry); | |
5286 | } | |
5287 | } | |
5288 | ||
5289 | ||
5290 | typedef struct | |
5291 | { | |
5292 | void *finfo; | |
5293 | struct bfd_link_info *info; | |
5294 | asection *sec; | |
5295 | int sec_shndx; | |
5296 | int (*func) (void *, const char *, Elf_Internal_Sym *, | |
5297 | asection *, struct elf_link_hash_entry *); | |
5298 | } output_arch_syminfo; | |
5299 | ||
5300 | enum map_symbol_type | |
5301 | { | |
5302 | AARCH64_MAP_INSN, | |
5303 | AARCH64_MAP_DATA | |
5304 | }; | |
5305 | ||
5306 | ||
5307 | /* Output a single mapping symbol. */ | |
5308 | ||
5309 | static bfd_boolean | |
cec5225b | 5310 | elfNN_aarch64_output_map_sym (output_arch_syminfo *osi, |
a06ea964 NC |
5311 | enum map_symbol_type type, bfd_vma offset) |
5312 | { | |
5313 | static const char *names[2] = { "$x", "$d" }; | |
5314 | Elf_Internal_Sym sym; | |
5315 | ||
5316 | sym.st_value = (osi->sec->output_section->vma | |
5317 | + osi->sec->output_offset + offset); | |
5318 | sym.st_size = 0; | |
5319 | sym.st_other = 0; | |
5320 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
5321 | sym.st_shndx = osi->sec_shndx; | |
5322 | return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1; | |
5323 | } | |
5324 | ||
5325 | ||
5326 | ||
5327 | /* Output mapping symbols for PLT entries associated with H. */ | |
5328 | ||
5329 | static bfd_boolean | |
cec5225b | 5330 | elfNN_aarch64_output_plt_map (struct elf_link_hash_entry *h, void *inf) |
a06ea964 NC |
5331 | { |
5332 | output_arch_syminfo *osi = (output_arch_syminfo *) inf; | |
5333 | bfd_vma addr; | |
5334 | ||
5335 | if (h->root.type == bfd_link_hash_indirect) | |
5336 | return TRUE; | |
5337 | ||
5338 | if (h->root.type == bfd_link_hash_warning) | |
5339 | /* When warning symbols are created, they **replace** the "real" | |
5340 | entry in the hash table, thus we never get to see the real | |
5341 | symbol in a hash traversal. So look at it now. */ | |
5342 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5343 | ||
5344 | if (h->plt.offset == (bfd_vma) - 1) | |
5345 | return TRUE; | |
5346 | ||
5347 | addr = h->plt.offset; | |
5348 | if (addr == 32) | |
5349 | { | |
cec5225b | 5350 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 NC |
5351 | return FALSE; |
5352 | } | |
5353 | return TRUE; | |
5354 | } | |
5355 | ||
5356 | ||
5357 | /* Output a single local symbol for a generated stub. */ | |
5358 | ||
5359 | static bfd_boolean | |
cec5225b | 5360 | elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name, |
a06ea964 NC |
5361 | bfd_vma offset, bfd_vma size) |
5362 | { | |
5363 | Elf_Internal_Sym sym; | |
5364 | ||
5365 | sym.st_value = (osi->sec->output_section->vma | |
5366 | + osi->sec->output_offset + offset); | |
5367 | sym.st_size = size; | |
5368 | sym.st_other = 0; | |
5369 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
5370 | sym.st_shndx = osi->sec_shndx; | |
5371 | return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1; | |
5372 | } | |
5373 | ||
5374 | static bfd_boolean | |
5375 | aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) | |
5376 | { | |
cec5225b | 5377 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
5378 | asection *stub_sec; |
5379 | bfd_vma addr; | |
5380 | char *stub_name; | |
5381 | output_arch_syminfo *osi; | |
5382 | ||
5383 | /* Massage our args to the form they really have. */ | |
cec5225b | 5384 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
5385 | osi = (output_arch_syminfo *) in_arg; |
5386 | ||
5387 | stub_sec = stub_entry->stub_sec; | |
5388 | ||
5389 | /* Ensure this stub is attached to the current section being | |
5390 | processed. */ | |
5391 | if (stub_sec != osi->sec) | |
5392 | return TRUE; | |
5393 | ||
5394 | addr = (bfd_vma) stub_entry->stub_offset; | |
5395 | ||
5396 | stub_name = stub_entry->output_name; | |
5397 | ||
5398 | switch (stub_entry->stub_type) | |
5399 | { | |
5400 | case aarch64_stub_adrp_branch: | |
cec5225b | 5401 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, |
a06ea964 NC |
5402 | sizeof (aarch64_adrp_branch_stub))) |
5403 | return FALSE; | |
cec5225b | 5404 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 NC |
5405 | return FALSE; |
5406 | break; | |
5407 | case aarch64_stub_long_branch: | |
cec5225b | 5408 | if (!elfNN_aarch64_output_stub_sym |
a06ea964 NC |
5409 | (osi, stub_name, addr, sizeof (aarch64_long_branch_stub))) |
5410 | return FALSE; | |
cec5225b | 5411 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 | 5412 | return FALSE; |
cec5225b | 5413 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16)) |
a06ea964 NC |
5414 | return FALSE; |
5415 | break; | |
5416 | default: | |
5417 | BFD_FAIL (); | |
5418 | } | |
5419 | ||
5420 | return TRUE; | |
5421 | } | |
5422 | ||
5423 | /* Output mapping symbols for linker generated sections. */ | |
5424 | ||
5425 | static bfd_boolean | |
cec5225b | 5426 | elfNN_aarch64_output_arch_local_syms (bfd *output_bfd, |
a06ea964 NC |
5427 | struct bfd_link_info *info, |
5428 | void *finfo, | |
5429 | int (*func) (void *, const char *, | |
5430 | Elf_Internal_Sym *, | |
5431 | asection *, | |
5432 | struct elf_link_hash_entry | |
5433 | *)) | |
5434 | { | |
5435 | output_arch_syminfo osi; | |
cec5225b | 5436 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 5437 | |
cec5225b | 5438 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
5439 | |
5440 | osi.finfo = finfo; | |
5441 | osi.info = info; | |
5442 | osi.func = func; | |
5443 | ||
5444 | /* Long calls stubs. */ | |
5445 | if (htab->stub_bfd && htab->stub_bfd->sections) | |
5446 | { | |
5447 | asection *stub_sec; | |
5448 | ||
5449 | for (stub_sec = htab->stub_bfd->sections; | |
5450 | stub_sec != NULL; stub_sec = stub_sec->next) | |
5451 | { | |
5452 | /* Ignore non-stub sections. */ | |
5453 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
5454 | continue; | |
5455 | ||
5456 | osi.sec = stub_sec; | |
5457 | ||
5458 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
5459 | (output_bfd, osi.sec->output_section); | |
5460 | ||
5461 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub, | |
5462 | &osi); | |
5463 | } | |
5464 | } | |
5465 | ||
5466 | /* Finally, output mapping symbols for the PLT. */ | |
5467 | if (!htab->root.splt || htab->root.splt->size == 0) | |
5468 | return TRUE; | |
5469 | ||
5470 | /* For now live without mapping symbols for the plt. */ | |
5471 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
5472 | (output_bfd, htab->root.splt->output_section); | |
5473 | osi.sec = htab->root.splt; | |
5474 | ||
cec5225b | 5475 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_output_plt_map, |
a06ea964 NC |
5476 | (void *) &osi); |
5477 | ||
5478 | return TRUE; | |
5479 | ||
5480 | } | |
5481 | ||
5482 | /* Allocate target specific section data. */ | |
5483 | ||
5484 | static bfd_boolean | |
cec5225b | 5485 | elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec) |
a06ea964 NC |
5486 | { |
5487 | if (!sec->used_by_bfd) | |
5488 | { | |
5489 | _aarch64_elf_section_data *sdata; | |
5490 | bfd_size_type amt = sizeof (*sdata); | |
5491 | ||
5492 | sdata = bfd_zalloc (abfd, amt); | |
5493 | if (sdata == NULL) | |
5494 | return FALSE; | |
5495 | sec->used_by_bfd = sdata; | |
5496 | } | |
5497 | ||
5498 | record_section_with_aarch64_elf_section_data (sec); | |
5499 | ||
5500 | return _bfd_elf_new_section_hook (abfd, sec); | |
5501 | } | |
5502 | ||
5503 | ||
5504 | static void | |
5505 | unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
5506 | asection *sec, | |
5507 | void *ignore ATTRIBUTE_UNUSED) | |
5508 | { | |
5509 | unrecord_section_with_aarch64_elf_section_data (sec); | |
5510 | } | |
5511 | ||
5512 | static bfd_boolean | |
cec5225b | 5513 | elfNN_aarch64_close_and_cleanup (bfd *abfd) |
a06ea964 NC |
5514 | { |
5515 | if (abfd->sections) | |
5516 | bfd_map_over_sections (abfd, | |
5517 | unrecord_section_via_map_over_sections, NULL); | |
5518 | ||
5519 | return _bfd_elf_close_and_cleanup (abfd); | |
5520 | } | |
5521 | ||
5522 | static bfd_boolean | |
cec5225b | 5523 | elfNN_aarch64_bfd_free_cached_info (bfd *abfd) |
a06ea964 NC |
5524 | { |
5525 | if (abfd->sections) | |
5526 | bfd_map_over_sections (abfd, | |
5527 | unrecord_section_via_map_over_sections, NULL); | |
5528 | ||
5529 | return _bfd_free_cached_info (abfd); | |
5530 | } | |
5531 | ||
8847944f | 5532 | static bfd_boolean |
cec5225b | 5533 | elfNN_aarch64_is_function_type (unsigned int type) |
8847944f WN |
5534 | { |
5535 | return type == STT_FUNC; | |
5536 | } | |
5537 | ||
a06ea964 NC |
5538 | /* Create dynamic sections. This is different from the ARM backend in that |
5539 | the got, plt, gotplt and their relocation sections are all created in the | |
5540 | standard part of the bfd elf backend. */ | |
5541 | ||
5542 | static bfd_boolean | |
cec5225b | 5543 | elfNN_aarch64_create_dynamic_sections (bfd *dynobj, |
a06ea964 NC |
5544 | struct bfd_link_info *info) |
5545 | { | |
cec5225b | 5546 | struct elf_aarch64_link_hash_table *htab; |
cc0efaa8 MS |
5547 | |
5548 | /* We need to create .got section. */ | |
5549 | if (!aarch64_elf_create_got_section (dynobj, info)) | |
5550 | return FALSE; | |
a06ea964 NC |
5551 | |
5552 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
5553 | return FALSE; | |
5554 | ||
cec5225b | 5555 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
5556 | htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss"); |
5557 | if (!info->shared) | |
5558 | htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss"); | |
5559 | ||
5560 | if (!htab->sdynbss || (!info->shared && !htab->srelbss)) | |
5561 | abort (); | |
5562 | ||
a06ea964 NC |
5563 | return TRUE; |
5564 | } | |
5565 | ||
5566 | ||
5567 | /* Allocate space in .plt, .got and associated reloc sections for | |
5568 | dynamic relocs. */ | |
5569 | ||
5570 | static bfd_boolean | |
cec5225b | 5571 | elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
a06ea964 NC |
5572 | { |
5573 | struct bfd_link_info *info; | |
cec5225b YZ |
5574 | struct elf_aarch64_link_hash_table *htab; |
5575 | struct elf_aarch64_link_hash_entry *eh; | |
a06ea964 NC |
5576 | struct elf_dyn_relocs *p; |
5577 | ||
5578 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
5579 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
5580 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
5581 | ||
5582 | There is no need to process bfd_link_hash_indirect symbols here | |
5583 | because we will also be presented with the concrete instance of | |
cec5225b | 5584 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been |
a06ea964 NC |
5585 | called to copy all relevant data from the generic to the concrete |
5586 | symbol instance. | |
5587 | */ | |
5588 | if (h->root.type == bfd_link_hash_indirect) | |
5589 | return TRUE; | |
5590 | ||
5591 | if (h->root.type == bfd_link_hash_warning) | |
5592 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5593 | ||
5594 | info = (struct bfd_link_info *) inf; | |
cec5225b | 5595 | htab = elf_aarch64_hash_table (info); |
a06ea964 | 5596 | |
8847944f | 5597 | if (htab->root.dynamic_sections_created && h->plt.refcount > 0) |
a06ea964 NC |
5598 | { |
5599 | /* Make sure this symbol is output as a dynamic symbol. | |
5600 | Undefined weak syms won't yet be marked as dynamic. */ | |
5601 | if (h->dynindx == -1 && !h->forced_local) | |
5602 | { | |
5603 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
5604 | return FALSE; | |
5605 | } | |
5606 | ||
5607 | if (info->shared || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
5608 | { | |
5609 | asection *s = htab->root.splt; | |
5610 | ||
5611 | /* If this is the first .plt entry, make room for the special | |
5612 | first entry. */ | |
5613 | if (s->size == 0) | |
5614 | s->size += htab->plt_header_size; | |
5615 | ||
5616 | h->plt.offset = s->size; | |
5617 | ||
5618 | /* If this symbol is not defined in a regular file, and we are | |
5619 | not generating a shared library, then set the symbol to this | |
5620 | location in the .plt. This is required to make function | |
5621 | pointers compare as equal between the normal executable and | |
5622 | the shared library. */ | |
5623 | if (!info->shared && !h->def_regular) | |
5624 | { | |
5625 | h->root.u.def.section = s; | |
5626 | h->root.u.def.value = h->plt.offset; | |
5627 | } | |
5628 | ||
5629 | /* Make room for this entry. For now we only create the | |
5630 | small model PLT entries. We later need to find a way | |
5631 | of relaxing into these from the large model PLT entries. */ | |
5632 | s->size += PLT_SMALL_ENTRY_SIZE; | |
5633 | ||
5634 | /* We also need to make an entry in the .got.plt section, which | |
5635 | will be placed in the .got section by the linker script. */ | |
5636 | htab->root.sgotplt->size += GOT_ENTRY_SIZE; | |
5637 | ||
5638 | /* We also need to make an entry in the .rela.plt section. */ | |
5639 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
5640 | ||
5641 | /* We need to ensure that all GOT entries that serve the PLT | |
5642 | are consecutive with the special GOT slots [0] [1] and | |
5643 | [2]. Any addtional relocations, such as | |
5644 | R_AARCH64_TLSDESC, must be placed after the PLT related | |
5645 | entries. We abuse the reloc_count such that during | |
5646 | sizing we adjust reloc_count to indicate the number of | |
5647 | PLT related reserved entries. In subsequent phases when | |
5648 | filling in the contents of the reloc entries, PLT related | |
5649 | entries are placed by computing their PLT index (0 | |
5650 | .. reloc_count). While other none PLT relocs are placed | |
5651 | at the slot indicated by reloc_count and reloc_count is | |
5652 | updated. */ | |
5653 | ||
5654 | htab->root.srelplt->reloc_count++; | |
5655 | } | |
5656 | else | |
5657 | { | |
5658 | h->plt.offset = (bfd_vma) - 1; | |
5659 | h->needs_plt = 0; | |
5660 | } | |
5661 | } | |
5662 | else | |
5663 | { | |
5664 | h->plt.offset = (bfd_vma) - 1; | |
5665 | h->needs_plt = 0; | |
5666 | } | |
5667 | ||
cec5225b | 5668 | eh = (struct elf_aarch64_link_hash_entry *) h; |
a06ea964 NC |
5669 | eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; |
5670 | ||
5671 | if (h->got.refcount > 0) | |
5672 | { | |
5673 | bfd_boolean dyn; | |
cec5225b | 5674 | unsigned got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
5675 | |
5676 | h->got.offset = (bfd_vma) - 1; | |
5677 | ||
5678 | dyn = htab->root.dynamic_sections_created; | |
5679 | ||
5680 | /* Make sure this symbol is output as a dynamic symbol. | |
5681 | Undefined weak syms won't yet be marked as dynamic. */ | |
5682 | if (dyn && h->dynindx == -1 && !h->forced_local) | |
5683 | { | |
5684 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
5685 | return FALSE; | |
5686 | } | |
5687 | ||
5688 | if (got_type == GOT_UNKNOWN) | |
5689 | { | |
5690 | } | |
5691 | else if (got_type == GOT_NORMAL) | |
5692 | { | |
5693 | h->got.offset = htab->root.sgot->size; | |
5694 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
5695 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5696 | || h->root.type != bfd_link_hash_undefweak) | |
5697 | && (info->shared | |
5698 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
5699 | { | |
5700 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
5701 | } | |
5702 | } | |
5703 | else | |
5704 | { | |
5705 | int indx; | |
5706 | if (got_type & GOT_TLSDESC_GD) | |
5707 | { | |
5708 | eh->tlsdesc_got_jump_table_offset = | |
5709 | (htab->root.sgotplt->size | |
5710 | - aarch64_compute_jump_table_size (htab)); | |
5711 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
5712 | h->got.offset = (bfd_vma) - 2; | |
5713 | } | |
5714 | ||
5715 | if (got_type & GOT_TLS_GD) | |
5716 | { | |
5717 | h->got.offset = htab->root.sgot->size; | |
5718 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
5719 | } | |
5720 | ||
5721 | if (got_type & GOT_TLS_IE) | |
5722 | { | |
5723 | h->got.offset = htab->root.sgot->size; | |
5724 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
5725 | } | |
5726 | ||
5727 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
5728 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5729 | || h->root.type != bfd_link_hash_undefweak) | |
5730 | && (info->shared | |
5731 | || indx != 0 | |
5732 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
5733 | { | |
5734 | if (got_type & GOT_TLSDESC_GD) | |
5735 | { | |
5736 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
5737 | /* Note reloc_count not incremented here! We have | |
5738 | already adjusted reloc_count for this relocation | |
5739 | type. */ | |
5740 | ||
5741 | /* TLSDESC PLT is now needed, but not yet determined. */ | |
5742 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
5743 | } | |
5744 | ||
5745 | if (got_type & GOT_TLS_GD) | |
5746 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
5747 | ||
5748 | if (got_type & GOT_TLS_IE) | |
5749 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
5750 | } | |
5751 | } | |
5752 | } | |
5753 | else | |
5754 | { | |
5755 | h->got.offset = (bfd_vma) - 1; | |
5756 | } | |
5757 | ||
5758 | if (eh->dyn_relocs == NULL) | |
5759 | return TRUE; | |
5760 | ||
5761 | /* In the shared -Bsymbolic case, discard space allocated for | |
5762 | dynamic pc-relative relocs against symbols which turn out to be | |
5763 | defined in regular objects. For the normal shared case, discard | |
5764 | space for pc-relative relocs that have become local due to symbol | |
5765 | visibility changes. */ | |
5766 | ||
5767 | if (info->shared) | |
5768 | { | |
5769 | /* Relocs that use pc_count are those that appear on a call | |
5770 | insn, or certain REL relocs that can generated via assembly. | |
5771 | We want calls to protected symbols to resolve directly to the | |
5772 | function rather than going via the plt. If people want | |
5773 | function pointer comparisons to work as expected then they | |
5774 | should avoid writing weird assembly. */ | |
5775 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
5776 | { | |
5777 | struct elf_dyn_relocs **pp; | |
5778 | ||
5779 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) | |
5780 | { | |
5781 | p->count -= p->pc_count; | |
5782 | p->pc_count = 0; | |
5783 | if (p->count == 0) | |
5784 | *pp = p->next; | |
5785 | else | |
5786 | pp = &p->next; | |
5787 | } | |
5788 | } | |
5789 | ||
5790 | /* Also discard relocs on undefined weak syms with non-default | |
5791 | visibility. */ | |
5792 | if (eh->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak) | |
5793 | { | |
5794 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
5795 | eh->dyn_relocs = NULL; | |
5796 | ||
5797 | /* Make sure undefined weak symbols are output as a dynamic | |
5798 | symbol in PIEs. */ | |
5799 | else if (h->dynindx == -1 | |
5800 | && !h->forced_local | |
5801 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
5802 | return FALSE; | |
5803 | } | |
5804 | ||
5805 | } | |
5806 | else if (ELIMINATE_COPY_RELOCS) | |
5807 | { | |
5808 | /* For the non-shared case, discard space for relocs against | |
5809 | symbols which turn out to need copy relocs or are not | |
5810 | dynamic. */ | |
5811 | ||
5812 | if (!h->non_got_ref | |
5813 | && ((h->def_dynamic | |
5814 | && !h->def_regular) | |
5815 | || (htab->root.dynamic_sections_created | |
5816 | && (h->root.type == bfd_link_hash_undefweak | |
5817 | || h->root.type == bfd_link_hash_undefined)))) | |
5818 | { | |
5819 | /* Make sure this symbol is output as a dynamic symbol. | |
5820 | Undefined weak syms won't yet be marked as dynamic. */ | |
5821 | if (h->dynindx == -1 | |
5822 | && !h->forced_local | |
5823 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
5824 | return FALSE; | |
5825 | ||
5826 | /* If that succeeded, we know we'll be keeping all the | |
5827 | relocs. */ | |
5828 | if (h->dynindx != -1) | |
5829 | goto keep; | |
5830 | } | |
5831 | ||
5832 | eh->dyn_relocs = NULL; | |
5833 | ||
5834 | keep:; | |
5835 | } | |
5836 | ||
5837 | /* Finally, allocate space. */ | |
5838 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
5839 | { | |
5840 | asection *sreloc; | |
5841 | ||
5842 | sreloc = elf_section_data (p->sec)->sreloc; | |
5843 | ||
5844 | BFD_ASSERT (sreloc != NULL); | |
5845 | ||
5846 | sreloc->size += p->count * RELOC_SIZE (htab); | |
5847 | } | |
5848 | ||
5849 | return TRUE; | |
5850 | } | |
5851 | ||
5852 | ||
a06ea964 NC |
5853 | /* This is the most important function of all . Innocuosly named |
5854 | though ! */ | |
5855 | static bfd_boolean | |
cec5225b | 5856 | elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
5857 | struct bfd_link_info *info) |
5858 | { | |
cec5225b | 5859 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
5860 | bfd *dynobj; |
5861 | asection *s; | |
5862 | bfd_boolean relocs; | |
5863 | bfd *ibfd; | |
5864 | ||
cec5225b | 5865 | htab = elf_aarch64_hash_table ((info)); |
a06ea964 NC |
5866 | dynobj = htab->root.dynobj; |
5867 | ||
5868 | BFD_ASSERT (dynobj != NULL); | |
5869 | ||
5870 | if (htab->root.dynamic_sections_created) | |
5871 | { | |
5872 | if (info->executable) | |
5873 | { | |
5874 | s = bfd_get_linker_section (dynobj, ".interp"); | |
5875 | if (s == NULL) | |
5876 | abort (); | |
5877 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
5878 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
5879 | } | |
5880 | } | |
5881 | ||
5882 | /* Set up .got offsets for local syms, and space for local dynamic | |
5883 | relocs. */ | |
5884 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
5885 | { | |
5886 | struct elf_aarch64_local_symbol *locals = NULL; | |
5887 | Elf_Internal_Shdr *symtab_hdr; | |
5888 | asection *srel; | |
5889 | unsigned int i; | |
5890 | ||
5891 | if (!is_aarch64_elf (ibfd)) | |
5892 | continue; | |
5893 | ||
5894 | for (s = ibfd->sections; s != NULL; s = s->next) | |
5895 | { | |
5896 | struct elf_dyn_relocs *p; | |
5897 | ||
5898 | for (p = (struct elf_dyn_relocs *) | |
5899 | (elf_section_data (s)->local_dynrel); p != NULL; p = p->next) | |
5900 | { | |
5901 | if (!bfd_is_abs_section (p->sec) | |
5902 | && bfd_is_abs_section (p->sec->output_section)) | |
5903 | { | |
5904 | /* Input section has been discarded, either because | |
5905 | it is a copy of a linkonce section or due to | |
5906 | linker script /DISCARD/, so we'll be discarding | |
5907 | the relocs too. */ | |
5908 | } | |
5909 | else if (p->count != 0) | |
5910 | { | |
5911 | srel = elf_section_data (p->sec)->sreloc; | |
5912 | srel->size += p->count * RELOC_SIZE (htab); | |
5913 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
5914 | info->flags |= DF_TEXTREL; | |
5915 | } | |
5916 | } | |
5917 | } | |
5918 | ||
cec5225b | 5919 | locals = elf_aarch64_locals (ibfd); |
a06ea964 NC |
5920 | if (!locals) |
5921 | continue; | |
5922 | ||
5923 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
5924 | srel = htab->root.srelgot; | |
5925 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
5926 | { | |
5927 | locals[i].got_offset = (bfd_vma) - 1; | |
5928 | locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
5929 | if (locals[i].got_refcount > 0) | |
5930 | { | |
5931 | unsigned got_type = locals[i].got_type; | |
5932 | if (got_type & GOT_TLSDESC_GD) | |
5933 | { | |
5934 | locals[i].tlsdesc_got_jump_table_offset = | |
5935 | (htab->root.sgotplt->size | |
5936 | - aarch64_compute_jump_table_size (htab)); | |
5937 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
5938 | locals[i].got_offset = (bfd_vma) - 2; | |
5939 | } | |
5940 | ||
5941 | if (got_type & GOT_TLS_GD) | |
5942 | { | |
5943 | locals[i].got_offset = htab->root.sgot->size; | |
5944 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
5945 | } | |
5946 | ||
5947 | if (got_type & GOT_TLS_IE) | |
5948 | { | |
5949 | locals[i].got_offset = htab->root.sgot->size; | |
5950 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
5951 | } | |
5952 | ||
5953 | if (got_type == GOT_UNKNOWN) | |
5954 | { | |
5955 | } | |
5956 | ||
5957 | if (got_type == GOT_NORMAL) | |
5958 | { | |
5959 | } | |
5960 | ||
5961 | if (info->shared) | |
5962 | { | |
5963 | if (got_type & GOT_TLSDESC_GD) | |
5964 | { | |
5965 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
5966 | /* Note RELOC_COUNT not incremented here! */ | |
5967 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
5968 | } | |
5969 | ||
5970 | if (got_type & GOT_TLS_GD) | |
5971 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
5972 | ||
5973 | if (got_type & GOT_TLS_IE) | |
5974 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
5975 | } | |
5976 | } | |
5977 | else | |
5978 | { | |
5979 | locals[i].got_refcount = (bfd_vma) - 1; | |
5980 | } | |
5981 | } | |
5982 | } | |
5983 | ||
5984 | ||
5985 | /* Allocate global sym .plt and .got entries, and space for global | |
5986 | sym dynamic relocs. */ | |
cec5225b | 5987 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs, |
a06ea964 NC |
5988 | info); |
5989 | ||
5990 | ||
5991 | /* For every jump slot reserved in the sgotplt, reloc_count is | |
5992 | incremented. However, when we reserve space for TLS descriptors, | |
5993 | it's not incremented, so in order to compute the space reserved | |
5994 | for them, it suffices to multiply the reloc count by the jump | |
5995 | slot size. */ | |
5996 | ||
5997 | if (htab->root.srelplt) | |
8847944f | 5998 | htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab); |
a06ea964 NC |
5999 | |
6000 | if (htab->tlsdesc_plt) | |
6001 | { | |
6002 | if (htab->root.splt->size == 0) | |
6003 | htab->root.splt->size += PLT_ENTRY_SIZE; | |
6004 | ||
6005 | htab->tlsdesc_plt = htab->root.splt->size; | |
6006 | htab->root.splt->size += PLT_TLSDESC_ENTRY_SIZE; | |
6007 | ||
6008 | /* If we're not using lazy TLS relocations, don't generate the | |
6009 | GOT entry required. */ | |
6010 | if (!(info->flags & DF_BIND_NOW)) | |
6011 | { | |
6012 | htab->dt_tlsdesc_got = htab->root.sgot->size; | |
6013 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
6014 | } | |
6015 | } | |
6016 | ||
6017 | /* We now have determined the sizes of the various dynamic sections. | |
6018 | Allocate memory for them. */ | |
6019 | relocs = FALSE; | |
6020 | for (s = dynobj->sections; s != NULL; s = s->next) | |
6021 | { | |
6022 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
6023 | continue; | |
6024 | ||
6025 | if (s == htab->root.splt | |
6026 | || s == htab->root.sgot | |
6027 | || s == htab->root.sgotplt | |
6028 | || s == htab->root.iplt | |
6029 | || s == htab->root.igotplt || s == htab->sdynbss) | |
6030 | { | |
6031 | /* Strip this section if we don't need it; see the | |
6032 | comment below. */ | |
6033 | } | |
6034 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) | |
6035 | { | |
6036 | if (s->size != 0 && s != htab->root.srelplt) | |
6037 | relocs = TRUE; | |
6038 | ||
6039 | /* We use the reloc_count field as a counter if we need | |
6040 | to copy relocs into the output file. */ | |
6041 | if (s != htab->root.srelplt) | |
6042 | s->reloc_count = 0; | |
6043 | } | |
6044 | else | |
6045 | { | |
6046 | /* It's not one of our sections, so don't allocate space. */ | |
6047 | continue; | |
6048 | } | |
6049 | ||
6050 | if (s->size == 0) | |
6051 | { | |
6052 | /* If we don't need this section, strip it from the | |
6053 | output file. This is mostly to handle .rela.bss and | |
6054 | .rela.plt. We must create both sections in | |
6055 | create_dynamic_sections, because they must be created | |
6056 | before the linker maps input sections to output | |
6057 | sections. The linker does that before | |
6058 | adjust_dynamic_symbol is called, and it is that | |
6059 | function which decides whether anything needs to go | |
6060 | into these sections. */ | |
6061 | ||
6062 | s->flags |= SEC_EXCLUDE; | |
6063 | continue; | |
6064 | } | |
6065 | ||
6066 | if ((s->flags & SEC_HAS_CONTENTS) == 0) | |
6067 | continue; | |
6068 | ||
6069 | /* Allocate memory for the section contents. We use bfd_zalloc | |
6070 | here in case unused entries are not reclaimed before the | |
6071 | section's contents are written out. This should not happen, | |
6072 | but this way if it does, we get a R_AARCH64_NONE reloc instead | |
6073 | of garbage. */ | |
6074 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
6075 | if (s->contents == NULL) | |
6076 | return FALSE; | |
6077 | } | |
6078 | ||
6079 | if (htab->root.dynamic_sections_created) | |
6080 | { | |
6081 | /* Add some entries to the .dynamic section. We fill in the | |
cec5225b | 6082 | values later, in elfNN_aarch64_finish_dynamic_sections, but we |
a06ea964 NC |
6083 | must add the entries now so that we get the correct size for |
6084 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
6085 | dynamic linker and used by the debugger. */ | |
6086 | #define add_dynamic_entry(TAG, VAL) \ | |
6087 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
6088 | ||
6089 | if (info->executable) | |
6090 | { | |
6091 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
6092 | return FALSE; | |
6093 | } | |
6094 | ||
6095 | if (htab->root.splt->size != 0) | |
6096 | { | |
6097 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
6098 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
6099 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
6100 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
6101 | return FALSE; | |
6102 | ||
6103 | if (htab->tlsdesc_plt | |
6104 | && (!add_dynamic_entry (DT_TLSDESC_PLT, 0) | |
6105 | || !add_dynamic_entry (DT_TLSDESC_GOT, 0))) | |
6106 | return FALSE; | |
6107 | } | |
6108 | ||
6109 | if (relocs) | |
6110 | { | |
6111 | if (!add_dynamic_entry (DT_RELA, 0) | |
6112 | || !add_dynamic_entry (DT_RELASZ, 0) | |
6113 | || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) | |
6114 | return FALSE; | |
6115 | ||
6116 | /* If any dynamic relocs apply to a read-only section, | |
6117 | then we need a DT_TEXTREL entry. */ | |
6118 | if ((info->flags & DF_TEXTREL) != 0) | |
6119 | { | |
6120 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
6121 | return FALSE; | |
6122 | } | |
6123 | } | |
6124 | } | |
6125 | #undef add_dynamic_entry | |
6126 | ||
6127 | return TRUE; | |
a06ea964 NC |
6128 | } |
6129 | ||
6130 | static inline void | |
caed7120 YZ |
6131 | elf_aarch64_update_plt_entry (bfd *output_bfd, |
6132 | bfd_reloc_code_real_type r_type, | |
6133 | bfd_byte *plt_entry, bfd_vma value) | |
a06ea964 | 6134 | { |
caed7120 YZ |
6135 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type); |
6136 | ||
6137 | _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value); | |
a06ea964 NC |
6138 | } |
6139 | ||
6140 | static void | |
cec5225b YZ |
6141 | elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h, |
6142 | struct elf_aarch64_link_hash_table | |
8847944f | 6143 | *htab, bfd *output_bfd) |
a06ea964 NC |
6144 | { |
6145 | bfd_byte *plt_entry; | |
6146 | bfd_vma plt_index; | |
6147 | bfd_vma got_offset; | |
6148 | bfd_vma gotplt_entry_address; | |
6149 | bfd_vma plt_entry_address; | |
6150 | Elf_Internal_Rela rela; | |
6151 | bfd_byte *loc; | |
6152 | ||
8847944f | 6153 | plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size; |
692e2b8b | 6154 | |
8847944f | 6155 | /* Offset in the GOT is PLT index plus got GOT headers(3) |
cec5225b | 6156 | times GOT_ENTRY_SIZE. */ |
8847944f WN |
6157 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; |
6158 | plt_entry = htab->root.splt->contents + h->plt.offset; | |
6159 | plt_entry_address = htab->root.splt->output_section->vma | |
6160 | + htab->root.splt->output_section->output_offset + h->plt.offset; | |
6161 | gotplt_entry_address = htab->root.sgotplt->output_section->vma + | |
6162 | htab->root.sgotplt->output_offset + got_offset; | |
a06ea964 NC |
6163 | |
6164 | /* Copy in the boiler-plate for the PLTn entry. */ | |
cec5225b | 6165 | memcpy (plt_entry, elfNN_aarch64_small_plt_entry, PLT_SMALL_ENTRY_SIZE); |
a06ea964 NC |
6166 | |
6167 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
6168 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 YZ |
6169 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
6170 | plt_entry, | |
6171 | PG (gotplt_entry_address) - | |
6172 | PG (plt_entry_address)); | |
a06ea964 NC |
6173 | |
6174 | /* Fill in the lo12 bits for the load from the pltgot. */ | |
caed7120 YZ |
6175 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
6176 | plt_entry + 4, | |
6177 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 | 6178 | |
9aff4b7a | 6179 | /* Fill in the lo12 bits for the add from the pltgot entry. */ |
caed7120 YZ |
6180 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
6181 | plt_entry + 8, | |
6182 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 NC |
6183 | |
6184 | /* All the GOTPLT Entries are essentially initialized to PLT0. */ | |
cec5225b | 6185 | bfd_put_NN (output_bfd, |
8847944f WN |
6186 | (htab->root.splt->output_section->vma |
6187 | + htab->root.splt->output_offset), | |
6188 | htab->root.sgotplt->contents + got_offset); | |
a06ea964 | 6189 | |
8847944f | 6190 | /* Fill in the entry in the .rela.plt section. */ |
a06ea964 | 6191 | rela.r_offset = gotplt_entry_address; |
cec5225b | 6192 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT)); |
8847944f | 6193 | rela.r_addend = 0; |
a06ea964 NC |
6194 | |
6195 | /* Compute the relocation entry to used based on PLT index and do | |
6196 | not adjust reloc_count. The reloc_count has already been adjusted | |
6197 | to account for this entry. */ | |
8847944f | 6198 | loc = htab->root.srelplt->contents + plt_index * RELOC_SIZE (htab); |
cec5225b | 6199 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
6200 | } |
6201 | ||
6202 | /* Size sections even though they're not dynamic. We use it to setup | |
6203 | _TLS_MODULE_BASE_, if needed. */ | |
6204 | ||
6205 | static bfd_boolean | |
cec5225b | 6206 | elfNN_aarch64_always_size_sections (bfd *output_bfd, |
a06ea964 NC |
6207 | struct bfd_link_info *info) |
6208 | { | |
6209 | asection *tls_sec; | |
6210 | ||
6211 | if (info->relocatable) | |
6212 | return TRUE; | |
6213 | ||
6214 | tls_sec = elf_hash_table (info)->tls_sec; | |
6215 | ||
6216 | if (tls_sec) | |
6217 | { | |
6218 | struct elf_link_hash_entry *tlsbase; | |
6219 | ||
6220 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
6221 | "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE); | |
6222 | ||
6223 | if (tlsbase) | |
6224 | { | |
6225 | struct bfd_link_hash_entry *h = NULL; | |
6226 | const struct elf_backend_data *bed = | |
6227 | get_elf_backend_data (output_bfd); | |
6228 | ||
6229 | if (!(_bfd_generic_link_add_one_symbol | |
6230 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
6231 | tls_sec, 0, NULL, FALSE, bed->collect, &h))) | |
6232 | return FALSE; | |
6233 | ||
6234 | tlsbase->type = STT_TLS; | |
6235 | tlsbase = (struct elf_link_hash_entry *) h; | |
6236 | tlsbase->def_regular = 1; | |
6237 | tlsbase->other = STV_HIDDEN; | |
6238 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
6239 | } | |
6240 | } | |
6241 | ||
6242 | return TRUE; | |
6243 | } | |
6244 | ||
6245 | /* Finish up dynamic symbol handling. We set the contents of various | |
6246 | dynamic sections here. */ | |
6247 | static bfd_boolean | |
cec5225b | 6248 | elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd, |
a06ea964 NC |
6249 | struct bfd_link_info *info, |
6250 | struct elf_link_hash_entry *h, | |
6251 | Elf_Internal_Sym *sym) | |
6252 | { | |
cec5225b YZ |
6253 | struct elf_aarch64_link_hash_table *htab; |
6254 | htab = elf_aarch64_hash_table (info); | |
a06ea964 NC |
6255 | |
6256 | if (h->plt.offset != (bfd_vma) - 1) | |
6257 | { | |
6258 | /* This symbol has an entry in the procedure linkage table. Set | |
6259 | it up. */ | |
6260 | ||
8847944f WN |
6261 | if (h->dynindx == -1 |
6262 | || htab->root.splt == NULL | |
6263 | || htab->root.sgotplt == NULL || htab->root.srelplt == NULL) | |
a06ea964 NC |
6264 | abort (); |
6265 | ||
cec5225b | 6266 | elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd); |
a06ea964 NC |
6267 | if (!h->def_regular) |
6268 | { | |
6269 | /* Mark the symbol as undefined, rather than as defined in | |
6270 | the .plt section. Leave the value alone. This is a clue | |
6271 | for the dynamic linker, to make function pointer | |
6272 | comparisons work between an application and shared | |
6273 | library. */ | |
6274 | sym->st_shndx = SHN_UNDEF; | |
6275 | } | |
6276 | } | |
6277 | ||
6278 | if (h->got.offset != (bfd_vma) - 1 | |
cec5225b | 6279 | && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL) |
a06ea964 NC |
6280 | { |
6281 | Elf_Internal_Rela rela; | |
6282 | bfd_byte *loc; | |
6283 | ||
6284 | /* This symbol has an entry in the global offset table. Set it | |
6285 | up. */ | |
6286 | if (htab->root.sgot == NULL || htab->root.srelgot == NULL) | |
6287 | abort (); | |
6288 | ||
6289 | rela.r_offset = (htab->root.sgot->output_section->vma | |
6290 | + htab->root.sgot->output_offset | |
6291 | + (h->got.offset & ~(bfd_vma) 1)); | |
6292 | ||
6293 | if (info->shared && SYMBOL_REFERENCES_LOCAL (info, h)) | |
6294 | { | |
6295 | if (!h->def_regular) | |
6296 | return FALSE; | |
6297 | ||
6298 | BFD_ASSERT ((h->got.offset & 1) != 0); | |
a6bb11b2 | 6299 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); |
a06ea964 NC |
6300 | rela.r_addend = (h->root.u.def.value |
6301 | + h->root.u.def.section->output_section->vma | |
6302 | + h->root.u.def.section->output_offset); | |
6303 | } | |
6304 | else | |
6305 | { | |
6306 | BFD_ASSERT ((h->got.offset & 1) == 0); | |
cec5225b | 6307 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 | 6308 | htab->root.sgot->contents + h->got.offset); |
a6bb11b2 | 6309 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT)); |
a06ea964 NC |
6310 | rela.r_addend = 0; |
6311 | } | |
6312 | ||
6313 | loc = htab->root.srelgot->contents; | |
6314 | loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 6315 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
6316 | } |
6317 | ||
6318 | if (h->needs_copy) | |
6319 | { | |
6320 | Elf_Internal_Rela rela; | |
6321 | bfd_byte *loc; | |
6322 | ||
6323 | /* This symbol needs a copy reloc. Set it up. */ | |
6324 | ||
6325 | if (h->dynindx == -1 | |
6326 | || (h->root.type != bfd_link_hash_defined | |
6327 | && h->root.type != bfd_link_hash_defweak) | |
6328 | || htab->srelbss == NULL) | |
6329 | abort (); | |
6330 | ||
6331 | rela.r_offset = (h->root.u.def.value | |
6332 | + h->root.u.def.section->output_section->vma | |
6333 | + h->root.u.def.section->output_offset); | |
a6bb11b2 | 6334 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY)); |
a06ea964 NC |
6335 | rela.r_addend = 0; |
6336 | loc = htab->srelbss->contents; | |
6337 | loc += htab->srelbss->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 6338 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
6339 | } |
6340 | ||
6341 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may | |
6342 | be NULL for local symbols. */ | |
6343 | if (sym != NULL | |
9637f6ef | 6344 | && (h == elf_hash_table (info)->hdynamic |
a06ea964 NC |
6345 | || h == elf_hash_table (info)->hgot)) |
6346 | sym->st_shndx = SHN_ABS; | |
6347 | ||
6348 | return TRUE; | |
6349 | } | |
6350 | ||
6351 | static void | |
cec5225b YZ |
6352 | elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED, |
6353 | struct elf_aarch64_link_hash_table | |
a06ea964 NC |
6354 | *htab) |
6355 | { | |
6356 | /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between | |
6357 | small and large plts and at the minute just generates | |
6358 | the small PLT. */ | |
6359 | ||
cec5225b | 6360 | /* PLT0 of the small PLT looks like this in ELF64 - |
a06ea964 NC |
6361 | stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack. |
6362 | adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT | |
6363 | ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the | |
6364 | // symbol resolver | |
6365 | add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the | |
6366 | // GOTPLT entry for this. | |
6367 | br x17 | |
cec5225b YZ |
6368 | PLT0 will be slightly different in ELF32 due to different got entry |
6369 | size. | |
a06ea964 | 6370 | */ |
caed7120 | 6371 | bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */ |
a06ea964 NC |
6372 | bfd_vma plt_base; |
6373 | ||
6374 | ||
cec5225b | 6375 | memcpy (htab->root.splt->contents, elfNN_aarch64_small_plt0_entry, |
a06ea964 NC |
6376 | PLT_ENTRY_SIZE); |
6377 | elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize = | |
6378 | PLT_ENTRY_SIZE; | |
6379 | ||
caed7120 YZ |
6380 | plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma |
6381 | + htab->root.sgotplt->output_offset | |
6382 | + GOT_ENTRY_SIZE * 2); | |
a06ea964 NC |
6383 | |
6384 | plt_base = htab->root.splt->output_section->vma + | |
6385 | htab->root.splt->output_section->output_offset; | |
6386 | ||
6387 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
6388 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 YZ |
6389 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
6390 | htab->root.splt->contents + 4, | |
6391 | PG (plt_got_2nd_ent) - PG (plt_base + 4)); | |
a06ea964 | 6392 | |
caed7120 YZ |
6393 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
6394 | htab->root.splt->contents + 8, | |
6395 | PG_OFFSET (plt_got_2nd_ent)); | |
a06ea964 | 6396 | |
caed7120 YZ |
6397 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
6398 | htab->root.splt->contents + 12, | |
6399 | PG_OFFSET (plt_got_2nd_ent)); | |
a06ea964 NC |
6400 | } |
6401 | ||
6402 | static bfd_boolean | |
cec5225b | 6403 | elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd, |
a06ea964 NC |
6404 | struct bfd_link_info *info) |
6405 | { | |
cec5225b | 6406 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
6407 | bfd *dynobj; |
6408 | asection *sdyn; | |
6409 | ||
cec5225b | 6410 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
6411 | dynobj = htab->root.dynobj; |
6412 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); | |
6413 | ||
6414 | if (htab->root.dynamic_sections_created) | |
6415 | { | |
cec5225b | 6416 | ElfNN_External_Dyn *dyncon, *dynconend; |
a06ea964 NC |
6417 | |
6418 | if (sdyn == NULL || htab->root.sgot == NULL) | |
6419 | abort (); | |
6420 | ||
cec5225b YZ |
6421 | dyncon = (ElfNN_External_Dyn *) sdyn->contents; |
6422 | dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size); | |
a06ea964 NC |
6423 | for (; dyncon < dynconend; dyncon++) |
6424 | { | |
6425 | Elf_Internal_Dyn dyn; | |
6426 | asection *s; | |
6427 | ||
cec5225b | 6428 | bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn); |
a06ea964 NC |
6429 | |
6430 | switch (dyn.d_tag) | |
6431 | { | |
6432 | default: | |
6433 | continue; | |
6434 | ||
6435 | case DT_PLTGOT: | |
6436 | s = htab->root.sgotplt; | |
6437 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
6438 | break; | |
6439 | ||
6440 | case DT_JMPREL: | |
6441 | dyn.d_un.d_ptr = htab->root.srelplt->output_section->vma; | |
6442 | break; | |
6443 | ||
6444 | case DT_PLTRELSZ: | |
6445 | s = htab->root.srelplt->output_section; | |
6446 | dyn.d_un.d_val = s->size; | |
6447 | break; | |
6448 | ||
6449 | case DT_RELASZ: | |
6450 | /* The procedure linkage table relocs (DT_JMPREL) should | |
6451 | not be included in the overall relocs (DT_RELA). | |
6452 | Therefore, we override the DT_RELASZ entry here to | |
6453 | make it not include the JMPREL relocs. Since the | |
6454 | linker script arranges for .rela.plt to follow all | |
6455 | other relocation sections, we don't have to worry | |
6456 | about changing the DT_RELA entry. */ | |
6457 | if (htab->root.srelplt != NULL) | |
6458 | { | |
6459 | s = htab->root.srelplt->output_section; | |
6460 | dyn.d_un.d_val -= s->size; | |
6461 | } | |
6462 | break; | |
6463 | ||
6464 | case DT_TLSDESC_PLT: | |
6465 | s = htab->root.splt; | |
6466 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
6467 | + htab->tlsdesc_plt; | |
6468 | break; | |
6469 | ||
6470 | case DT_TLSDESC_GOT: | |
6471 | s = htab->root.sgot; | |
6472 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
6473 | + htab->dt_tlsdesc_got; | |
6474 | break; | |
6475 | } | |
6476 | ||
cec5225b | 6477 | bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon); |
a06ea964 NC |
6478 | } |
6479 | ||
6480 | } | |
6481 | ||
6482 | /* Fill in the special first entry in the procedure linkage table. */ | |
6483 | if (htab->root.splt && htab->root.splt->size > 0) | |
6484 | { | |
cec5225b | 6485 | elfNN_aarch64_init_small_plt0_entry (output_bfd, htab); |
a06ea964 NC |
6486 | |
6487 | elf_section_data (htab->root.splt->output_section)-> | |
6488 | this_hdr.sh_entsize = htab->plt_entry_size; | |
6489 | ||
6490 | ||
6491 | if (htab->tlsdesc_plt) | |
6492 | { | |
cec5225b | 6493 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
6494 | htab->root.sgot->contents + htab->dt_tlsdesc_got); |
6495 | ||
6496 | memcpy (htab->root.splt->contents + htab->tlsdesc_plt, | |
cec5225b YZ |
6497 | elfNN_aarch64_tlsdesc_small_plt_entry, |
6498 | sizeof (elfNN_aarch64_tlsdesc_small_plt_entry)); | |
a06ea964 NC |
6499 | |
6500 | { | |
6501 | bfd_vma adrp1_addr = | |
6502 | htab->root.splt->output_section->vma | |
6503 | + htab->root.splt->output_offset + htab->tlsdesc_plt + 4; | |
6504 | ||
caed7120 | 6505 | bfd_vma adrp2_addr = adrp1_addr + 4; |
a06ea964 NC |
6506 | |
6507 | bfd_vma got_addr = | |
6508 | htab->root.sgot->output_section->vma | |
6509 | + htab->root.sgot->output_offset; | |
6510 | ||
6511 | bfd_vma pltgot_addr = | |
6512 | htab->root.sgotplt->output_section->vma | |
6513 | + htab->root.sgotplt->output_offset; | |
6514 | ||
6515 | bfd_vma dt_tlsdesc_got = got_addr + htab->dt_tlsdesc_got; | |
caed7120 YZ |
6516 | |
6517 | bfd_byte *plt_entry = | |
6518 | htab->root.splt->contents + htab->tlsdesc_plt; | |
a06ea964 NC |
6519 | |
6520 | /* adrp x2, DT_TLSDESC_GOT */ | |
caed7120 YZ |
6521 | elf_aarch64_update_plt_entry (output_bfd, |
6522 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
6523 | plt_entry + 4, | |
6524 | (PG (dt_tlsdesc_got) | |
6525 | - PG (adrp1_addr))); | |
a06ea964 NC |
6526 | |
6527 | /* adrp x3, 0 */ | |
caed7120 YZ |
6528 | elf_aarch64_update_plt_entry (output_bfd, |
6529 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
6530 | plt_entry + 8, | |
6531 | (PG (pltgot_addr) | |
6532 | - PG (adrp2_addr))); | |
a06ea964 NC |
6533 | |
6534 | /* ldr x2, [x2, #0] */ | |
caed7120 YZ |
6535 | elf_aarch64_update_plt_entry (output_bfd, |
6536 | BFD_RELOC_AARCH64_LDSTNN_LO12, | |
6537 | plt_entry + 12, | |
6538 | PG_OFFSET (dt_tlsdesc_got)); | |
a06ea964 NC |
6539 | |
6540 | /* add x3, x3, 0 */ | |
caed7120 YZ |
6541 | elf_aarch64_update_plt_entry (output_bfd, |
6542 | BFD_RELOC_AARCH64_ADD_LO12, | |
6543 | plt_entry + 16, | |
6544 | PG_OFFSET (pltgot_addr)); | |
a06ea964 NC |
6545 | } |
6546 | } | |
6547 | } | |
6548 | ||
6549 | if (htab->root.sgotplt) | |
6550 | { | |
6551 | if (bfd_is_abs_section (htab->root.sgotplt->output_section)) | |
6552 | { | |
6553 | (*_bfd_error_handler) | |
6554 | (_("discarded output section: `%A'"), htab->root.sgotplt); | |
6555 | return FALSE; | |
6556 | } | |
6557 | ||
6558 | /* Fill in the first three entries in the global offset table. */ | |
6559 | if (htab->root.sgotplt->size > 0) | |
6560 | { | |
8db339a6 MS |
6561 | bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents); |
6562 | ||
a06ea964 | 6563 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ |
cec5225b | 6564 | bfd_put_NN (output_bfd, |
a06ea964 NC |
6565 | (bfd_vma) 0, |
6566 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE); | |
cec5225b | 6567 | bfd_put_NN (output_bfd, |
a06ea964 NC |
6568 | (bfd_vma) 0, |
6569 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2); | |
6570 | } | |
6571 | ||
8db339a6 MS |
6572 | if (htab->root.sgot) |
6573 | { | |
6574 | if (htab->root.sgot->size > 0) | |
6575 | { | |
6576 | bfd_vma addr = | |
6577 | sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0; | |
6578 | bfd_put_NN (output_bfd, addr, htab->root.sgot->contents); | |
6579 | } | |
6580 | } | |
6581 | ||
a06ea964 NC |
6582 | elf_section_data (htab->root.sgotplt->output_section)-> |
6583 | this_hdr.sh_entsize = GOT_ENTRY_SIZE; | |
6584 | } | |
6585 | ||
6586 | if (htab->root.sgot && htab->root.sgot->size > 0) | |
6587 | elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize | |
6588 | = GOT_ENTRY_SIZE; | |
6589 | ||
6590 | return TRUE; | |
6591 | } | |
6592 | ||
6593 | /* Return address for Ith PLT stub in section PLT, for relocation REL | |
6594 | or (bfd_vma) -1 if it should not be included. */ | |
6595 | ||
6596 | static bfd_vma | |
cec5225b | 6597 | elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt, |
a06ea964 NC |
6598 | const arelent *rel ATTRIBUTE_UNUSED) |
6599 | { | |
6600 | return plt->vma + PLT_ENTRY_SIZE + i * PLT_SMALL_ENTRY_SIZE; | |
6601 | } | |
6602 | ||
6603 | ||
6604 | /* We use this so we can override certain functions | |
6605 | (though currently we don't). */ | |
6606 | ||
cec5225b | 6607 | const struct elf_size_info elfNN_aarch64_size_info = |
a06ea964 | 6608 | { |
cec5225b YZ |
6609 | sizeof (ElfNN_External_Ehdr), |
6610 | sizeof (ElfNN_External_Phdr), | |
6611 | sizeof (ElfNN_External_Shdr), | |
6612 | sizeof (ElfNN_External_Rel), | |
6613 | sizeof (ElfNN_External_Rela), | |
6614 | sizeof (ElfNN_External_Sym), | |
6615 | sizeof (ElfNN_External_Dyn), | |
a06ea964 NC |
6616 | sizeof (Elf_External_Note), |
6617 | 4, /* Hash table entry size. */ | |
6618 | 1, /* Internal relocs per external relocs. */ | |
cec5225b YZ |
6619 | ARCH_SIZE, /* Arch size. */ |
6620 | LOG_FILE_ALIGN, /* Log_file_align. */ | |
6621 | ELFCLASSNN, EV_CURRENT, | |
6622 | bfd_elfNN_write_out_phdrs, | |
6623 | bfd_elfNN_write_shdrs_and_ehdr, | |
6624 | bfd_elfNN_checksum_contents, | |
6625 | bfd_elfNN_write_relocs, | |
6626 | bfd_elfNN_swap_symbol_in, | |
6627 | bfd_elfNN_swap_symbol_out, | |
6628 | bfd_elfNN_slurp_reloc_table, | |
6629 | bfd_elfNN_slurp_symbol_table, | |
6630 | bfd_elfNN_swap_dyn_in, | |
6631 | bfd_elfNN_swap_dyn_out, | |
6632 | bfd_elfNN_swap_reloc_in, | |
6633 | bfd_elfNN_swap_reloc_out, | |
6634 | bfd_elfNN_swap_reloca_in, | |
6635 | bfd_elfNN_swap_reloca_out | |
a06ea964 NC |
6636 | }; |
6637 | ||
6638 | #define ELF_ARCH bfd_arch_aarch64 | |
6639 | #define ELF_MACHINE_CODE EM_AARCH64 | |
6640 | #define ELF_MAXPAGESIZE 0x10000 | |
6641 | #define ELF_MINPAGESIZE 0x1000 | |
6642 | #define ELF_COMMONPAGESIZE 0x1000 | |
6643 | ||
cec5225b YZ |
6644 | #define bfd_elfNN_close_and_cleanup \ |
6645 | elfNN_aarch64_close_and_cleanup | |
a06ea964 | 6646 | |
cec5225b YZ |
6647 | #define bfd_elfNN_bfd_copy_private_bfd_data \ |
6648 | elfNN_aarch64_copy_private_bfd_data | |
a06ea964 | 6649 | |
cec5225b YZ |
6650 | #define bfd_elfNN_bfd_free_cached_info \ |
6651 | elfNN_aarch64_bfd_free_cached_info | |
a06ea964 | 6652 | |
cec5225b YZ |
6653 | #define bfd_elfNN_bfd_is_target_special_symbol \ |
6654 | elfNN_aarch64_is_target_special_symbol | |
a06ea964 | 6655 | |
cec5225b YZ |
6656 | #define bfd_elfNN_bfd_link_hash_table_create \ |
6657 | elfNN_aarch64_link_hash_table_create | |
a06ea964 | 6658 | |
cec5225b YZ |
6659 | #define bfd_elfNN_bfd_link_hash_table_free \ |
6660 | elfNN_aarch64_hash_table_free | |
a06ea964 | 6661 | |
cec5225b YZ |
6662 | #define bfd_elfNN_bfd_merge_private_bfd_data \ |
6663 | elfNN_aarch64_merge_private_bfd_data | |
a06ea964 | 6664 | |
cec5225b YZ |
6665 | #define bfd_elfNN_bfd_print_private_bfd_data \ |
6666 | elfNN_aarch64_print_private_bfd_data | |
a06ea964 | 6667 | |
cec5225b YZ |
6668 | #define bfd_elfNN_bfd_reloc_type_lookup \ |
6669 | elfNN_aarch64_reloc_type_lookup | |
a06ea964 | 6670 | |
cec5225b YZ |
6671 | #define bfd_elfNN_bfd_reloc_name_lookup \ |
6672 | elfNN_aarch64_reloc_name_lookup | |
a06ea964 | 6673 | |
cec5225b YZ |
6674 | #define bfd_elfNN_bfd_set_private_flags \ |
6675 | elfNN_aarch64_set_private_flags | |
a06ea964 | 6676 | |
cec5225b YZ |
6677 | #define bfd_elfNN_find_inliner_info \ |
6678 | elfNN_aarch64_find_inliner_info | |
a06ea964 | 6679 | |
cec5225b YZ |
6680 | #define bfd_elfNN_find_nearest_line \ |
6681 | elfNN_aarch64_find_nearest_line | |
a06ea964 | 6682 | |
cec5225b YZ |
6683 | #define bfd_elfNN_mkobject \ |
6684 | elfNN_aarch64_mkobject | |
a06ea964 | 6685 | |
cec5225b YZ |
6686 | #define bfd_elfNN_new_section_hook \ |
6687 | elfNN_aarch64_new_section_hook | |
a06ea964 NC |
6688 | |
6689 | #define elf_backend_adjust_dynamic_symbol \ | |
cec5225b | 6690 | elfNN_aarch64_adjust_dynamic_symbol |
a06ea964 NC |
6691 | |
6692 | #define elf_backend_always_size_sections \ | |
cec5225b | 6693 | elfNN_aarch64_always_size_sections |
a06ea964 NC |
6694 | |
6695 | #define elf_backend_check_relocs \ | |
cec5225b | 6696 | elfNN_aarch64_check_relocs |
a06ea964 NC |
6697 | |
6698 | #define elf_backend_copy_indirect_symbol \ | |
cec5225b | 6699 | elfNN_aarch64_copy_indirect_symbol |
a06ea964 NC |
6700 | |
6701 | /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts | |
6702 | to them in our hash. */ | |
6703 | #define elf_backend_create_dynamic_sections \ | |
cec5225b | 6704 | elfNN_aarch64_create_dynamic_sections |
a06ea964 NC |
6705 | |
6706 | #define elf_backend_init_index_section \ | |
6707 | _bfd_elf_init_2_index_sections | |
6708 | ||
8847944f | 6709 | #define elf_backend_is_function_type \ |
cec5225b | 6710 | elfNN_aarch64_is_function_type |
8847944f | 6711 | |
a06ea964 | 6712 | #define elf_backend_finish_dynamic_sections \ |
cec5225b | 6713 | elfNN_aarch64_finish_dynamic_sections |
a06ea964 NC |
6714 | |
6715 | #define elf_backend_finish_dynamic_symbol \ | |
cec5225b | 6716 | elfNN_aarch64_finish_dynamic_symbol |
a06ea964 NC |
6717 | |
6718 | #define elf_backend_gc_sweep_hook \ | |
cec5225b | 6719 | elfNN_aarch64_gc_sweep_hook |
a06ea964 NC |
6720 | |
6721 | #define elf_backend_object_p \ | |
cec5225b | 6722 | elfNN_aarch64_object_p |
a06ea964 NC |
6723 | |
6724 | #define elf_backend_output_arch_local_syms \ | |
cec5225b | 6725 | elfNN_aarch64_output_arch_local_syms |
a06ea964 NC |
6726 | |
6727 | #define elf_backend_plt_sym_val \ | |
cec5225b | 6728 | elfNN_aarch64_plt_sym_val |
a06ea964 NC |
6729 | |
6730 | #define elf_backend_post_process_headers \ | |
cec5225b | 6731 | elfNN_aarch64_post_process_headers |
a06ea964 NC |
6732 | |
6733 | #define elf_backend_relocate_section \ | |
cec5225b | 6734 | elfNN_aarch64_relocate_section |
a06ea964 NC |
6735 | |
6736 | #define elf_backend_reloc_type_class \ | |
cec5225b | 6737 | elfNN_aarch64_reloc_type_class |
a06ea964 NC |
6738 | |
6739 | #define elf_backend_section_flags \ | |
cec5225b | 6740 | elfNN_aarch64_section_flags |
a06ea964 NC |
6741 | |
6742 | #define elf_backend_section_from_shdr \ | |
cec5225b | 6743 | elfNN_aarch64_section_from_shdr |
a06ea964 NC |
6744 | |
6745 | #define elf_backend_size_dynamic_sections \ | |
cec5225b | 6746 | elfNN_aarch64_size_dynamic_sections |
a06ea964 NC |
6747 | |
6748 | #define elf_backend_size_info \ | |
cec5225b | 6749 | elfNN_aarch64_size_info |
a06ea964 NC |
6750 | |
6751 | #define elf_backend_can_refcount 1 | |
59c108f7 | 6752 | #define elf_backend_can_gc_sections 1 |
a06ea964 NC |
6753 | #define elf_backend_plt_readonly 1 |
6754 | #define elf_backend_want_got_plt 1 | |
6755 | #define elf_backend_want_plt_sym 0 | |
6756 | #define elf_backend_may_use_rel_p 0 | |
6757 | #define elf_backend_may_use_rela_p 1 | |
6758 | #define elf_backend_default_use_rela_p 1 | |
6759 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3) | |
c495064d | 6760 | #define elf_backend_default_execstack 0 |
a06ea964 NC |
6761 | |
6762 | #undef elf_backend_obj_attrs_section | |
6763 | #define elf_backend_obj_attrs_section ".ARM.attributes" | |
6764 | ||
cec5225b | 6765 | #include "elfNN-target.h" |