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cec5225b | 1 | /* AArch64-specific support for NN-bit ELF. |
b90efa5b | 2 | Copyright (C) 2009-2015 Free Software Foundation, Inc. |
a06ea964 NC |
3 | Contributed by ARM Ltd. |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; see the file COPYING3. If not, | |
19 | see <http://www.gnu.org/licenses/>. */ | |
20 | ||
21 | /* Notes on implementation: | |
22 | ||
23 | Thread Local Store (TLS) | |
24 | ||
25 | Overview: | |
26 | ||
27 | The implementation currently supports both traditional TLS and TLS | |
28 | descriptors, but only general dynamic (GD). | |
29 | ||
30 | For traditional TLS the assembler will present us with code | |
31 | fragments of the form: | |
32 | ||
33 | adrp x0, :tlsgd:foo | |
34 | R_AARCH64_TLSGD_ADR_PAGE21(foo) | |
35 | add x0, :tlsgd_lo12:foo | |
36 | R_AARCH64_TLSGD_ADD_LO12_NC(foo) | |
37 | bl __tls_get_addr | |
38 | nop | |
39 | ||
40 | For TLS descriptors the assembler will present us with code | |
41 | fragments of the form: | |
42 | ||
418009c2 | 43 | adrp x0, :tlsdesc:foo R_AARCH64_TLSDESC_ADR_PAGE21(foo) |
a06ea964 NC |
44 | ldr x1, [x0, #:tlsdesc_lo12:foo] R_AARCH64_TLSDESC_LD64_LO12(foo) |
45 | add x0, x0, #:tlsdesc_lo12:foo R_AARCH64_TLSDESC_ADD_LO12(foo) | |
46 | .tlsdesccall foo | |
47 | blr x1 R_AARCH64_TLSDESC_CALL(foo) | |
48 | ||
49 | The relocations R_AARCH64_TLSGD_{ADR_PREL21,ADD_LO12_NC} against foo | |
50 | indicate that foo is thread local and should be accessed via the | |
51 | traditional TLS mechanims. | |
52 | ||
a6bb11b2 | 53 | The relocations R_AARCH64_TLSDESC_{ADR_PAGE21,LD64_LO12_NC,ADD_LO12_NC} |
a06ea964 NC |
54 | against foo indicate that 'foo' is thread local and should be accessed |
55 | via a TLS descriptor mechanism. | |
56 | ||
57 | The precise instruction sequence is only relevant from the | |
58 | perspective of linker relaxation which is currently not implemented. | |
59 | ||
60 | The static linker must detect that 'foo' is a TLS object and | |
61 | allocate a double GOT entry. The GOT entry must be created for both | |
62 | global and local TLS symbols. Note that this is different to none | |
63 | TLS local objects which do not need a GOT entry. | |
64 | ||
65 | In the traditional TLS mechanism, the double GOT entry is used to | |
66 | provide the tls_index structure, containing module and offset | |
a6bb11b2 | 67 | entries. The static linker places the relocation R_AARCH64_TLS_DTPMOD |
a06ea964 NC |
68 | on the module entry. The loader will subsequently fixup this |
69 | relocation with the module identity. | |
70 | ||
71 | For global traditional TLS symbols the static linker places an | |
a6bb11b2 | 72 | R_AARCH64_TLS_DTPREL relocation on the offset entry. The loader |
a06ea964 NC |
73 | will subsequently fixup the offset. For local TLS symbols the static |
74 | linker fixes up offset. | |
75 | ||
76 | In the TLS descriptor mechanism the double GOT entry is used to | |
77 | provide the descriptor. The static linker places the relocation | |
78 | R_AARCH64_TLSDESC on the first GOT slot. The loader will | |
79 | subsequently fix this up. | |
80 | ||
81 | Implementation: | |
82 | ||
83 | The handling of TLS symbols is implemented across a number of | |
84 | different backend functions. The following is a top level view of | |
85 | what processing is performed where. | |
86 | ||
87 | The TLS implementation maintains state information for each TLS | |
88 | symbol. The state information for local and global symbols is kept | |
89 | in different places. Global symbols use generic BFD structures while | |
90 | local symbols use backend specific structures that are allocated and | |
91 | maintained entirely by the backend. | |
92 | ||
93 | The flow: | |
94 | ||
cec5225b | 95 | elfNN_aarch64_check_relocs() |
a06ea964 NC |
96 | |
97 | This function is invoked for each relocation. | |
98 | ||
99 | The TLS relocations R_AARCH64_TLSGD_{ADR_PREL21,ADD_LO12_NC} and | |
a6bb11b2 | 100 | R_AARCH64_TLSDESC_{ADR_PAGE21,LD64_LO12_NC,ADD_LO12_NC} are |
a06ea964 NC |
101 | spotted. One time creation of local symbol data structures are |
102 | created when the first local symbol is seen. | |
103 | ||
104 | The reference count for a symbol is incremented. The GOT type for | |
105 | each symbol is marked as general dynamic. | |
106 | ||
cec5225b | 107 | elfNN_aarch64_allocate_dynrelocs () |
a06ea964 NC |
108 | |
109 | For each global with positive reference count we allocate a double | |
110 | GOT slot. For a traditional TLS symbol we allocate space for two | |
111 | relocation entries on the GOT, for a TLS descriptor symbol we | |
112 | allocate space for one relocation on the slot. Record the GOT offset | |
113 | for this symbol. | |
114 | ||
cec5225b | 115 | elfNN_aarch64_size_dynamic_sections () |
a06ea964 NC |
116 | |
117 | Iterate all input BFDS, look for in the local symbol data structure | |
118 | constructed earlier for local TLS symbols and allocate them double | |
119 | GOT slots along with space for a single GOT relocation. Update the | |
120 | local symbol structure to record the GOT offset allocated. | |
121 | ||
cec5225b | 122 | elfNN_aarch64_relocate_section () |
a06ea964 | 123 | |
cec5225b | 124 | Calls elfNN_aarch64_final_link_relocate () |
a06ea964 NC |
125 | |
126 | Emit the relevant TLS relocations against the GOT for each TLS | |
127 | symbol. For local TLS symbols emit the GOT offset directly. The GOT | |
128 | relocations are emitted once the first time a TLS symbol is | |
129 | encountered. The implementation uses the LSB of the GOT offset to | |
130 | flag that the relevant GOT relocations for a symbol have been | |
131 | emitted. All of the TLS code that uses the GOT offset needs to take | |
132 | care to mask out this flag bit before using the offset. | |
133 | ||
cec5225b | 134 | elfNN_aarch64_final_link_relocate () |
a06ea964 NC |
135 | |
136 | Fixup the R_AARCH64_TLSGD_{ADR_PREL21, ADD_LO12_NC} relocations. */ | |
137 | ||
138 | #include "sysdep.h" | |
139 | #include "bfd.h" | |
140 | #include "libiberty.h" | |
141 | #include "libbfd.h" | |
142 | #include "bfd_stdint.h" | |
143 | #include "elf-bfd.h" | |
144 | #include "bfdlink.h" | |
1419bbe5 | 145 | #include "objalloc.h" |
a06ea964 | 146 | #include "elf/aarch64.h" |
caed7120 | 147 | #include "elfxx-aarch64.h" |
a06ea964 | 148 | |
cec5225b YZ |
149 | #define ARCH_SIZE NN |
150 | ||
151 | #if ARCH_SIZE == 64 | |
152 | #define AARCH64_R(NAME) R_AARCH64_ ## NAME | |
153 | #define AARCH64_R_STR(NAME) "R_AARCH64_" #NAME | |
a6bb11b2 YZ |
154 | #define HOWTO64(...) HOWTO (__VA_ARGS__) |
155 | #define HOWTO32(...) EMPTY_HOWTO (0) | |
cec5225b YZ |
156 | #define LOG_FILE_ALIGN 3 |
157 | #endif | |
158 | ||
159 | #if ARCH_SIZE == 32 | |
160 | #define AARCH64_R(NAME) R_AARCH64_P32_ ## NAME | |
161 | #define AARCH64_R_STR(NAME) "R_AARCH64_P32_" #NAME | |
a6bb11b2 YZ |
162 | #define HOWTO64(...) EMPTY_HOWTO (0) |
163 | #define HOWTO32(...) HOWTO (__VA_ARGS__) | |
cec5225b YZ |
164 | #define LOG_FILE_ALIGN 2 |
165 | #endif | |
166 | ||
a6bb11b2 | 167 | #define IS_AARCH64_TLS_RELOC(R_TYPE) \ |
4c0a9a6f JW |
168 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \ |
169 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \ | |
3c12b054 | 170 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \ |
a6bb11b2 | 171 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \ |
a6bb11b2 | 172 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC \ |
4c0a9a6f | 173 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC \ |
a6bb11b2 | 174 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \ |
4c0a9a6f JW |
175 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC \ |
176 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1 \ | |
6ffe9a1b | 177 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12 \ |
40fbed84 | 178 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12 \ |
753999c1 | 179 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC \ |
73f925cc | 180 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \ |
f69e4920 | 181 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \ |
77a69ff8 | 182 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 \ |
07c9aa07 JW |
183 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12 \ |
184 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC \ | |
185 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12 \ | |
186 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC \ | |
187 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12 \ | |
188 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC \ | |
189 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12 \ | |
190 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC \ | |
6ffe9a1b JW |
191 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0 \ |
192 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC \ | |
193 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1 \ | |
194 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC \ | |
195 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2 \ | |
a6bb11b2 | 196 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 \ |
4c0a9a6f | 197 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12 \ |
a6bb11b2 | 198 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC \ |
a6bb11b2 YZ |
199 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0 \ |
200 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC \ | |
4c0a9a6f JW |
201 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 \ |
202 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC \ | |
203 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 \ | |
a6bb11b2 YZ |
204 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPMOD \ |
205 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPREL \ | |
206 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_TPREL \ | |
a06ea964 NC |
207 | || IS_AARCH64_TLSDESC_RELOC ((R_TYPE))) |
208 | ||
9331eea1 JW |
209 | #define IS_AARCH64_TLS_RELAX_RELOC(R_TYPE) \ |
210 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \ | |
211 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \ | |
212 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \ | |
213 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \ | |
214 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \ | |
215 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC \ | |
216 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \ | |
217 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \ | |
218 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \ | |
219 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC \ | |
220 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \ | |
221 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC) | |
222 | ||
a6bb11b2 | 223 | #define IS_AARCH64_TLSDESC_RELOC(R_TYPE) \ |
4c0a9a6f JW |
224 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC \ |
225 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \ | |
226 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC \ | |
a6bb11b2 | 227 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \ |
389b8029 | 228 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \ |
4c0a9a6f | 229 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \ |
a6bb11b2 | 230 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC \ |
4c0a9a6f | 231 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC \ |
a6bb11b2 | 232 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \ |
4c0a9a6f JW |
233 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \ |
234 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \ | |
235 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1) | |
a06ea964 NC |
236 | |
237 | #define ELIMINATE_COPY_RELOCS 0 | |
238 | ||
a06ea964 | 239 | /* Return size of a relocation entry. HTAB is the bfd's |
cec5225b YZ |
240 | elf_aarch64_link_hash_entry. */ |
241 | #define RELOC_SIZE(HTAB) (sizeof (ElfNN_External_Rela)) | |
a06ea964 | 242 | |
cec5225b YZ |
243 | /* GOT Entry size - 8 bytes in ELF64 and 4 bytes in ELF32. */ |
244 | #define GOT_ENTRY_SIZE (ARCH_SIZE / 8) | |
a06ea964 NC |
245 | #define PLT_ENTRY_SIZE (32) |
246 | #define PLT_SMALL_ENTRY_SIZE (16) | |
247 | #define PLT_TLSDESC_ENTRY_SIZE (32) | |
248 | ||
a06ea964 NC |
249 | /* Encoding of the nop instruction */ |
250 | #define INSN_NOP 0xd503201f | |
251 | ||
252 | #define aarch64_compute_jump_table_size(htab) \ | |
253 | (((htab)->root.srelplt == NULL) ? 0 \ | |
254 | : (htab)->root.srelplt->reloc_count * GOT_ENTRY_SIZE) | |
255 | ||
256 | /* The first entry in a procedure linkage table looks like this | |
257 | if the distance between the PLTGOT and the PLT is < 4GB use | |
258 | these PLT entries. Note that the dynamic linker gets &PLTGOT[2] | |
259 | in x16 and needs to work out PLTGOT[1] by using an address of | |
cec5225b YZ |
260 | [x16,#-GOT_ENTRY_SIZE]. */ |
261 | static const bfd_byte elfNN_aarch64_small_plt0_entry[PLT_ENTRY_SIZE] = | |
a06ea964 NC |
262 | { |
263 | 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */ | |
264 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */ | |
caed7120 | 265 | #if ARCH_SIZE == 64 |
a06ea964 NC |
266 | 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */ |
267 | 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */ | |
caed7120 YZ |
268 | #else |
269 | 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */ | |
270 | 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */ | |
271 | #endif | |
a06ea964 NC |
272 | 0x20, 0x02, 0x1f, 0xd6, /* br x17 */ |
273 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
274 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
275 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
276 | }; | |
277 | ||
278 | /* Per function entry in a procedure linkage table looks like this | |
279 | if the distance between the PLTGOT and the PLT is < 4GB use | |
280 | these PLT entries. */ | |
cec5225b | 281 | static const bfd_byte elfNN_aarch64_small_plt_entry[PLT_SMALL_ENTRY_SIZE] = |
a06ea964 NC |
282 | { |
283 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
caed7120 | 284 | #if ARCH_SIZE == 64 |
a06ea964 NC |
285 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ |
286 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
caed7120 YZ |
287 | #else |
288 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
289 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
290 | #endif | |
a06ea964 NC |
291 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ |
292 | }; | |
293 | ||
294 | static const bfd_byte | |
cec5225b | 295 | elfNN_aarch64_tlsdesc_small_plt_entry[PLT_TLSDESC_ENTRY_SIZE] = |
a06ea964 NC |
296 | { |
297 | 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */ | |
298 | 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */ | |
299 | 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */ | |
caed7120 YZ |
300 | #if ARCH_SIZE == 64 |
301 | 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */ | |
a06ea964 | 302 | 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */ |
caed7120 YZ |
303 | #else |
304 | 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */ | |
305 | 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */ | |
306 | #endif | |
307 | 0x40, 0x00, 0x1f, 0xd6, /* br x2 */ | |
a06ea964 NC |
308 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ |
309 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
310 | }; | |
311 | ||
cec5225b YZ |
312 | #define elf_info_to_howto elfNN_aarch64_info_to_howto |
313 | #define elf_info_to_howto_rel elfNN_aarch64_info_to_howto | |
a06ea964 NC |
314 | |
315 | #define AARCH64_ELF_ABI_VERSION 0 | |
a06ea964 NC |
316 | |
317 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ | |
318 | #define ALL_ONES (~ (bfd_vma) 0) | |
319 | ||
a6bb11b2 YZ |
320 | /* Indexed by the bfd interal reloc enumerators. |
321 | Therefore, the table needs to be synced with BFD_RELOC_AARCH64_* | |
322 | in reloc.c. */ | |
a06ea964 | 323 | |
a6bb11b2 | 324 | static reloc_howto_type elfNN_aarch64_howto_table[] = |
a06ea964 | 325 | { |
a6bb11b2 | 326 | EMPTY_HOWTO (0), |
a06ea964 | 327 | |
a6bb11b2 | 328 | /* Basic data relocations. */ |
a06ea964 | 329 | |
a6bb11b2 YZ |
330 | #if ARCH_SIZE == 64 |
331 | HOWTO (R_AARCH64_NULL, /* type */ | |
a06ea964 | 332 | 0, /* rightshift */ |
6346d5ca | 333 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a6bb11b2 | 334 | 0, /* bitsize */ |
a06ea964 NC |
335 | FALSE, /* pc_relative */ |
336 | 0, /* bitpos */ | |
337 | complain_overflow_dont, /* complain_on_overflow */ | |
338 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 339 | "R_AARCH64_NULL", /* name */ |
a06ea964 NC |
340 | FALSE, /* partial_inplace */ |
341 | 0, /* src_mask */ | |
a6bb11b2 | 342 | 0, /* dst_mask */ |
a06ea964 | 343 | FALSE), /* pcrel_offset */ |
a6bb11b2 YZ |
344 | #else |
345 | HOWTO (R_AARCH64_NONE, /* type */ | |
a06ea964 | 346 | 0, /* rightshift */ |
6346d5ca | 347 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a06ea964 NC |
348 | 0, /* bitsize */ |
349 | FALSE, /* pc_relative */ | |
350 | 0, /* bitpos */ | |
351 | complain_overflow_dont, /* complain_on_overflow */ | |
352 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 353 | "R_AARCH64_NONE", /* name */ |
a06ea964 NC |
354 | FALSE, /* partial_inplace */ |
355 | 0, /* src_mask */ | |
356 | 0, /* dst_mask */ | |
357 | FALSE), /* pcrel_offset */ | |
a6bb11b2 | 358 | #endif |
a06ea964 NC |
359 | |
360 | /* .xword: (S+A) */ | |
a6bb11b2 | 361 | HOWTO64 (AARCH64_R (ABS64), /* type */ |
a06ea964 NC |
362 | 0, /* rightshift */ |
363 | 4, /* size (4 = long long) */ | |
364 | 64, /* bitsize */ | |
365 | FALSE, /* pc_relative */ | |
366 | 0, /* bitpos */ | |
367 | complain_overflow_unsigned, /* complain_on_overflow */ | |
368 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 369 | AARCH64_R_STR (ABS64), /* name */ |
a06ea964 NC |
370 | FALSE, /* partial_inplace */ |
371 | ALL_ONES, /* src_mask */ | |
372 | ALL_ONES, /* dst_mask */ | |
373 | FALSE), /* pcrel_offset */ | |
374 | ||
375 | /* .word: (S+A) */ | |
a6bb11b2 | 376 | HOWTO (AARCH64_R (ABS32), /* type */ |
a06ea964 NC |
377 | 0, /* rightshift */ |
378 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
379 | 32, /* bitsize */ | |
380 | FALSE, /* pc_relative */ | |
381 | 0, /* bitpos */ | |
382 | complain_overflow_unsigned, /* complain_on_overflow */ | |
383 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 384 | AARCH64_R_STR (ABS32), /* name */ |
a06ea964 NC |
385 | FALSE, /* partial_inplace */ |
386 | 0xffffffff, /* src_mask */ | |
387 | 0xffffffff, /* dst_mask */ | |
388 | FALSE), /* pcrel_offset */ | |
389 | ||
390 | /* .half: (S+A) */ | |
a6bb11b2 | 391 | HOWTO (AARCH64_R (ABS16), /* type */ |
a06ea964 NC |
392 | 0, /* rightshift */ |
393 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
394 | 16, /* bitsize */ | |
395 | FALSE, /* pc_relative */ | |
396 | 0, /* bitpos */ | |
397 | complain_overflow_unsigned, /* complain_on_overflow */ | |
398 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 399 | AARCH64_R_STR (ABS16), /* name */ |
a06ea964 NC |
400 | FALSE, /* partial_inplace */ |
401 | 0xffff, /* src_mask */ | |
402 | 0xffff, /* dst_mask */ | |
403 | FALSE), /* pcrel_offset */ | |
404 | ||
405 | /* .xword: (S+A-P) */ | |
a6bb11b2 | 406 | HOWTO64 (AARCH64_R (PREL64), /* type */ |
a06ea964 NC |
407 | 0, /* rightshift */ |
408 | 4, /* size (4 = long long) */ | |
409 | 64, /* bitsize */ | |
410 | TRUE, /* pc_relative */ | |
411 | 0, /* bitpos */ | |
412 | complain_overflow_signed, /* complain_on_overflow */ | |
413 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 414 | AARCH64_R_STR (PREL64), /* name */ |
a06ea964 NC |
415 | FALSE, /* partial_inplace */ |
416 | ALL_ONES, /* src_mask */ | |
417 | ALL_ONES, /* dst_mask */ | |
418 | TRUE), /* pcrel_offset */ | |
419 | ||
420 | /* .word: (S+A-P) */ | |
a6bb11b2 | 421 | HOWTO (AARCH64_R (PREL32), /* type */ |
a06ea964 NC |
422 | 0, /* rightshift */ |
423 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
424 | 32, /* bitsize */ | |
425 | TRUE, /* pc_relative */ | |
426 | 0, /* bitpos */ | |
427 | complain_overflow_signed, /* complain_on_overflow */ | |
428 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 429 | AARCH64_R_STR (PREL32), /* name */ |
a06ea964 NC |
430 | FALSE, /* partial_inplace */ |
431 | 0xffffffff, /* src_mask */ | |
432 | 0xffffffff, /* dst_mask */ | |
433 | TRUE), /* pcrel_offset */ | |
434 | ||
435 | /* .half: (S+A-P) */ | |
a6bb11b2 | 436 | HOWTO (AARCH64_R (PREL16), /* type */ |
a06ea964 NC |
437 | 0, /* rightshift */ |
438 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
439 | 16, /* bitsize */ | |
440 | TRUE, /* pc_relative */ | |
441 | 0, /* bitpos */ | |
442 | complain_overflow_signed, /* complain_on_overflow */ | |
443 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 444 | AARCH64_R_STR (PREL16), /* name */ |
a06ea964 NC |
445 | FALSE, /* partial_inplace */ |
446 | 0xffff, /* src_mask */ | |
447 | 0xffff, /* dst_mask */ | |
448 | TRUE), /* pcrel_offset */ | |
449 | ||
450 | /* Group relocations to create a 16, 32, 48 or 64 bit | |
451 | unsigned data or abs address inline. */ | |
452 | ||
453 | /* MOVZ: ((S+A) >> 0) & 0xffff */ | |
a6bb11b2 | 454 | HOWTO (AARCH64_R (MOVW_UABS_G0), /* type */ |
a06ea964 NC |
455 | 0, /* rightshift */ |
456 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
457 | 16, /* bitsize */ | |
458 | FALSE, /* pc_relative */ | |
459 | 0, /* bitpos */ | |
460 | complain_overflow_unsigned, /* complain_on_overflow */ | |
461 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 462 | AARCH64_R_STR (MOVW_UABS_G0), /* name */ |
a06ea964 NC |
463 | FALSE, /* partial_inplace */ |
464 | 0xffff, /* src_mask */ | |
465 | 0xffff, /* dst_mask */ | |
466 | FALSE), /* pcrel_offset */ | |
467 | ||
468 | /* MOVK: ((S+A) >> 0) & 0xffff [no overflow check] */ | |
a6bb11b2 | 469 | HOWTO (AARCH64_R (MOVW_UABS_G0_NC), /* type */ |
a06ea964 NC |
470 | 0, /* rightshift */ |
471 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
472 | 16, /* bitsize */ | |
473 | FALSE, /* pc_relative */ | |
474 | 0, /* bitpos */ | |
475 | complain_overflow_dont, /* complain_on_overflow */ | |
476 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 477 | AARCH64_R_STR (MOVW_UABS_G0_NC), /* name */ |
a06ea964 NC |
478 | FALSE, /* partial_inplace */ |
479 | 0xffff, /* src_mask */ | |
480 | 0xffff, /* dst_mask */ | |
481 | FALSE), /* pcrel_offset */ | |
482 | ||
483 | /* MOVZ: ((S+A) >> 16) & 0xffff */ | |
a6bb11b2 | 484 | HOWTO (AARCH64_R (MOVW_UABS_G1), /* type */ |
a06ea964 NC |
485 | 16, /* rightshift */ |
486 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
487 | 16, /* bitsize */ | |
488 | FALSE, /* pc_relative */ | |
489 | 0, /* bitpos */ | |
490 | complain_overflow_unsigned, /* complain_on_overflow */ | |
491 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 492 | AARCH64_R_STR (MOVW_UABS_G1), /* name */ |
a06ea964 NC |
493 | FALSE, /* partial_inplace */ |
494 | 0xffff, /* src_mask */ | |
495 | 0xffff, /* dst_mask */ | |
496 | FALSE), /* pcrel_offset */ | |
497 | ||
498 | /* MOVK: ((S+A) >> 16) & 0xffff [no overflow check] */ | |
a6bb11b2 | 499 | HOWTO64 (AARCH64_R (MOVW_UABS_G1_NC), /* type */ |
a06ea964 NC |
500 | 16, /* rightshift */ |
501 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
502 | 16, /* bitsize */ | |
503 | FALSE, /* pc_relative */ | |
504 | 0, /* bitpos */ | |
505 | complain_overflow_dont, /* complain_on_overflow */ | |
506 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 507 | AARCH64_R_STR (MOVW_UABS_G1_NC), /* name */ |
a06ea964 NC |
508 | FALSE, /* partial_inplace */ |
509 | 0xffff, /* src_mask */ | |
510 | 0xffff, /* dst_mask */ | |
511 | FALSE), /* pcrel_offset */ | |
512 | ||
513 | /* MOVZ: ((S+A) >> 32) & 0xffff */ | |
a6bb11b2 | 514 | HOWTO64 (AARCH64_R (MOVW_UABS_G2), /* type */ |
a06ea964 NC |
515 | 32, /* rightshift */ |
516 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
517 | 16, /* bitsize */ | |
518 | FALSE, /* pc_relative */ | |
519 | 0, /* bitpos */ | |
520 | complain_overflow_unsigned, /* complain_on_overflow */ | |
521 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 522 | AARCH64_R_STR (MOVW_UABS_G2), /* name */ |
a06ea964 NC |
523 | FALSE, /* partial_inplace */ |
524 | 0xffff, /* src_mask */ | |
525 | 0xffff, /* dst_mask */ | |
526 | FALSE), /* pcrel_offset */ | |
527 | ||
528 | /* MOVK: ((S+A) >> 32) & 0xffff [no overflow check] */ | |
a6bb11b2 | 529 | HOWTO64 (AARCH64_R (MOVW_UABS_G2_NC), /* type */ |
a06ea964 NC |
530 | 32, /* rightshift */ |
531 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
532 | 16, /* bitsize */ | |
533 | FALSE, /* pc_relative */ | |
534 | 0, /* bitpos */ | |
535 | complain_overflow_dont, /* complain_on_overflow */ | |
536 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 537 | AARCH64_R_STR (MOVW_UABS_G2_NC), /* name */ |
a06ea964 NC |
538 | FALSE, /* partial_inplace */ |
539 | 0xffff, /* src_mask */ | |
540 | 0xffff, /* dst_mask */ | |
541 | FALSE), /* pcrel_offset */ | |
542 | ||
543 | /* MOVZ: ((S+A) >> 48) & 0xffff */ | |
a6bb11b2 | 544 | HOWTO64 (AARCH64_R (MOVW_UABS_G3), /* type */ |
a06ea964 NC |
545 | 48, /* rightshift */ |
546 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
547 | 16, /* bitsize */ | |
548 | FALSE, /* pc_relative */ | |
549 | 0, /* bitpos */ | |
550 | complain_overflow_unsigned, /* complain_on_overflow */ | |
551 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 552 | AARCH64_R_STR (MOVW_UABS_G3), /* name */ |
a06ea964 NC |
553 | FALSE, /* partial_inplace */ |
554 | 0xffff, /* src_mask */ | |
555 | 0xffff, /* dst_mask */ | |
556 | FALSE), /* pcrel_offset */ | |
557 | ||
558 | /* Group relocations to create high part of a 16, 32, 48 or 64 bit | |
559 | signed data or abs address inline. Will change instruction | |
560 | to MOVN or MOVZ depending on sign of calculated value. */ | |
561 | ||
562 | /* MOV[ZN]: ((S+A) >> 0) & 0xffff */ | |
a6bb11b2 | 563 | HOWTO (AARCH64_R (MOVW_SABS_G0), /* type */ |
a06ea964 NC |
564 | 0, /* rightshift */ |
565 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
566 | 16, /* bitsize */ | |
567 | FALSE, /* pc_relative */ | |
568 | 0, /* bitpos */ | |
569 | complain_overflow_signed, /* complain_on_overflow */ | |
570 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 571 | AARCH64_R_STR (MOVW_SABS_G0), /* name */ |
a06ea964 NC |
572 | FALSE, /* partial_inplace */ |
573 | 0xffff, /* src_mask */ | |
574 | 0xffff, /* dst_mask */ | |
575 | FALSE), /* pcrel_offset */ | |
576 | ||
577 | /* MOV[ZN]: ((S+A) >> 16) & 0xffff */ | |
a6bb11b2 | 578 | HOWTO64 (AARCH64_R (MOVW_SABS_G1), /* type */ |
a06ea964 NC |
579 | 16, /* rightshift */ |
580 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
581 | 16, /* bitsize */ | |
582 | FALSE, /* pc_relative */ | |
583 | 0, /* bitpos */ | |
584 | complain_overflow_signed, /* complain_on_overflow */ | |
585 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 586 | AARCH64_R_STR (MOVW_SABS_G1), /* name */ |
a06ea964 NC |
587 | FALSE, /* partial_inplace */ |
588 | 0xffff, /* src_mask */ | |
589 | 0xffff, /* dst_mask */ | |
590 | FALSE), /* pcrel_offset */ | |
591 | ||
592 | /* MOV[ZN]: ((S+A) >> 32) & 0xffff */ | |
a6bb11b2 | 593 | HOWTO64 (AARCH64_R (MOVW_SABS_G2), /* type */ |
a06ea964 NC |
594 | 32, /* rightshift */ |
595 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
596 | 16, /* bitsize */ | |
597 | FALSE, /* pc_relative */ | |
598 | 0, /* bitpos */ | |
599 | complain_overflow_signed, /* complain_on_overflow */ | |
600 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 601 | AARCH64_R_STR (MOVW_SABS_G2), /* name */ |
a06ea964 NC |
602 | FALSE, /* partial_inplace */ |
603 | 0xffff, /* src_mask */ | |
604 | 0xffff, /* dst_mask */ | |
605 | FALSE), /* pcrel_offset */ | |
606 | ||
607 | /* Relocations to generate 19, 21 and 33 bit PC-relative load/store | |
608 | addresses: PG(x) is (x & ~0xfff). */ | |
609 | ||
610 | /* LD-lit: ((S+A-P) >> 2) & 0x7ffff */ | |
a6bb11b2 | 611 | HOWTO (AARCH64_R (LD_PREL_LO19), /* type */ |
a06ea964 NC |
612 | 2, /* rightshift */ |
613 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
614 | 19, /* bitsize */ | |
615 | TRUE, /* pc_relative */ | |
616 | 0, /* bitpos */ | |
617 | complain_overflow_signed, /* complain_on_overflow */ | |
618 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 619 | AARCH64_R_STR (LD_PREL_LO19), /* name */ |
a06ea964 NC |
620 | FALSE, /* partial_inplace */ |
621 | 0x7ffff, /* src_mask */ | |
622 | 0x7ffff, /* dst_mask */ | |
623 | TRUE), /* pcrel_offset */ | |
624 | ||
625 | /* ADR: (S+A-P) & 0x1fffff */ | |
a6bb11b2 | 626 | HOWTO (AARCH64_R (ADR_PREL_LO21), /* type */ |
a06ea964 NC |
627 | 0, /* rightshift */ |
628 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
629 | 21, /* bitsize */ | |
630 | TRUE, /* pc_relative */ | |
631 | 0, /* bitpos */ | |
632 | complain_overflow_signed, /* complain_on_overflow */ | |
633 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 634 | AARCH64_R_STR (ADR_PREL_LO21), /* name */ |
a06ea964 NC |
635 | FALSE, /* partial_inplace */ |
636 | 0x1fffff, /* src_mask */ | |
637 | 0x1fffff, /* dst_mask */ | |
638 | TRUE), /* pcrel_offset */ | |
639 | ||
640 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
a6bb11b2 | 641 | HOWTO (AARCH64_R (ADR_PREL_PG_HI21), /* type */ |
a06ea964 NC |
642 | 12, /* rightshift */ |
643 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
644 | 21, /* bitsize */ | |
645 | TRUE, /* pc_relative */ | |
646 | 0, /* bitpos */ | |
647 | complain_overflow_signed, /* complain_on_overflow */ | |
648 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 649 | AARCH64_R_STR (ADR_PREL_PG_HI21), /* name */ |
a06ea964 NC |
650 | FALSE, /* partial_inplace */ |
651 | 0x1fffff, /* src_mask */ | |
652 | 0x1fffff, /* dst_mask */ | |
653 | TRUE), /* pcrel_offset */ | |
654 | ||
655 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff [no overflow check] */ | |
a6bb11b2 | 656 | HOWTO64 (AARCH64_R (ADR_PREL_PG_HI21_NC), /* type */ |
a06ea964 NC |
657 | 12, /* rightshift */ |
658 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
659 | 21, /* bitsize */ | |
660 | TRUE, /* pc_relative */ | |
661 | 0, /* bitpos */ | |
662 | complain_overflow_dont, /* complain_on_overflow */ | |
663 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 664 | AARCH64_R_STR (ADR_PREL_PG_HI21_NC), /* name */ |
a06ea964 NC |
665 | FALSE, /* partial_inplace */ |
666 | 0x1fffff, /* src_mask */ | |
667 | 0x1fffff, /* dst_mask */ | |
668 | TRUE), /* pcrel_offset */ | |
669 | ||
670 | /* ADD: (S+A) & 0xfff [no overflow check] */ | |
a6bb11b2 | 671 | HOWTO (AARCH64_R (ADD_ABS_LO12_NC), /* type */ |
a06ea964 NC |
672 | 0, /* rightshift */ |
673 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
674 | 12, /* bitsize */ | |
675 | FALSE, /* pc_relative */ | |
676 | 10, /* bitpos */ | |
677 | complain_overflow_dont, /* complain_on_overflow */ | |
678 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 679 | AARCH64_R_STR (ADD_ABS_LO12_NC), /* name */ |
a06ea964 NC |
680 | FALSE, /* partial_inplace */ |
681 | 0x3ffc00, /* src_mask */ | |
682 | 0x3ffc00, /* dst_mask */ | |
683 | FALSE), /* pcrel_offset */ | |
684 | ||
685 | /* LD/ST8: (S+A) & 0xfff */ | |
a6bb11b2 | 686 | HOWTO (AARCH64_R (LDST8_ABS_LO12_NC), /* type */ |
a06ea964 NC |
687 | 0, /* rightshift */ |
688 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
689 | 12, /* bitsize */ | |
690 | FALSE, /* pc_relative */ | |
691 | 0, /* bitpos */ | |
692 | complain_overflow_dont, /* complain_on_overflow */ | |
693 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 694 | AARCH64_R_STR (LDST8_ABS_LO12_NC), /* name */ |
a06ea964 NC |
695 | FALSE, /* partial_inplace */ |
696 | 0xfff, /* src_mask */ | |
697 | 0xfff, /* dst_mask */ | |
698 | FALSE), /* pcrel_offset */ | |
699 | ||
700 | /* Relocations for control-flow instructions. */ | |
701 | ||
702 | /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */ | |
a6bb11b2 | 703 | HOWTO (AARCH64_R (TSTBR14), /* type */ |
a06ea964 NC |
704 | 2, /* rightshift */ |
705 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
706 | 14, /* bitsize */ | |
707 | TRUE, /* pc_relative */ | |
708 | 0, /* bitpos */ | |
709 | complain_overflow_signed, /* complain_on_overflow */ | |
710 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 711 | AARCH64_R_STR (TSTBR14), /* name */ |
a06ea964 NC |
712 | FALSE, /* partial_inplace */ |
713 | 0x3fff, /* src_mask */ | |
714 | 0x3fff, /* dst_mask */ | |
715 | TRUE), /* pcrel_offset */ | |
716 | ||
717 | /* B.cond: ((S+A-P) >> 2) & 0x7ffff */ | |
a6bb11b2 | 718 | HOWTO (AARCH64_R (CONDBR19), /* type */ |
a06ea964 NC |
719 | 2, /* rightshift */ |
720 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
721 | 19, /* bitsize */ | |
722 | TRUE, /* pc_relative */ | |
723 | 0, /* bitpos */ | |
724 | complain_overflow_signed, /* complain_on_overflow */ | |
725 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 726 | AARCH64_R_STR (CONDBR19), /* name */ |
a06ea964 NC |
727 | FALSE, /* partial_inplace */ |
728 | 0x7ffff, /* src_mask */ | |
729 | 0x7ffff, /* dst_mask */ | |
730 | TRUE), /* pcrel_offset */ | |
731 | ||
a06ea964 | 732 | /* B: ((S+A-P) >> 2) & 0x3ffffff */ |
a6bb11b2 | 733 | HOWTO (AARCH64_R (JUMP26), /* type */ |
a06ea964 NC |
734 | 2, /* rightshift */ |
735 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
736 | 26, /* bitsize */ | |
737 | TRUE, /* pc_relative */ | |
738 | 0, /* bitpos */ | |
739 | complain_overflow_signed, /* complain_on_overflow */ | |
740 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 741 | AARCH64_R_STR (JUMP26), /* name */ |
a06ea964 NC |
742 | FALSE, /* partial_inplace */ |
743 | 0x3ffffff, /* src_mask */ | |
744 | 0x3ffffff, /* dst_mask */ | |
745 | TRUE), /* pcrel_offset */ | |
746 | ||
747 | /* BL: ((S+A-P) >> 2) & 0x3ffffff */ | |
a6bb11b2 | 748 | HOWTO (AARCH64_R (CALL26), /* type */ |
a06ea964 NC |
749 | 2, /* rightshift */ |
750 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
751 | 26, /* bitsize */ | |
752 | TRUE, /* pc_relative */ | |
753 | 0, /* bitpos */ | |
754 | complain_overflow_signed, /* complain_on_overflow */ | |
755 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 756 | AARCH64_R_STR (CALL26), /* name */ |
a06ea964 NC |
757 | FALSE, /* partial_inplace */ |
758 | 0x3ffffff, /* src_mask */ | |
759 | 0x3ffffff, /* dst_mask */ | |
760 | TRUE), /* pcrel_offset */ | |
761 | ||
762 | /* LD/ST16: (S+A) & 0xffe */ | |
a6bb11b2 | 763 | HOWTO (AARCH64_R (LDST16_ABS_LO12_NC), /* type */ |
a06ea964 NC |
764 | 1, /* rightshift */ |
765 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
766 | 12, /* bitsize */ | |
767 | FALSE, /* pc_relative */ | |
768 | 0, /* bitpos */ | |
769 | complain_overflow_dont, /* complain_on_overflow */ | |
770 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 771 | AARCH64_R_STR (LDST16_ABS_LO12_NC), /* name */ |
a06ea964 NC |
772 | FALSE, /* partial_inplace */ |
773 | 0xffe, /* src_mask */ | |
774 | 0xffe, /* dst_mask */ | |
775 | FALSE), /* pcrel_offset */ | |
776 | ||
777 | /* LD/ST32: (S+A) & 0xffc */ | |
a6bb11b2 | 778 | HOWTO (AARCH64_R (LDST32_ABS_LO12_NC), /* type */ |
a06ea964 NC |
779 | 2, /* rightshift */ |
780 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
781 | 12, /* bitsize */ | |
782 | FALSE, /* pc_relative */ | |
783 | 0, /* bitpos */ | |
784 | complain_overflow_dont, /* complain_on_overflow */ | |
785 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 786 | AARCH64_R_STR (LDST32_ABS_LO12_NC), /* name */ |
a06ea964 NC |
787 | FALSE, /* partial_inplace */ |
788 | 0xffc, /* src_mask */ | |
789 | 0xffc, /* dst_mask */ | |
790 | FALSE), /* pcrel_offset */ | |
791 | ||
792 | /* LD/ST64: (S+A) & 0xff8 */ | |
a6bb11b2 | 793 | HOWTO (AARCH64_R (LDST64_ABS_LO12_NC), /* type */ |
a06ea964 NC |
794 | 3, /* rightshift */ |
795 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
796 | 12, /* bitsize */ | |
797 | FALSE, /* pc_relative */ | |
798 | 0, /* bitpos */ | |
799 | complain_overflow_dont, /* complain_on_overflow */ | |
800 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 801 | AARCH64_R_STR (LDST64_ABS_LO12_NC), /* name */ |
a06ea964 NC |
802 | FALSE, /* partial_inplace */ |
803 | 0xff8, /* src_mask */ | |
804 | 0xff8, /* dst_mask */ | |
805 | FALSE), /* pcrel_offset */ | |
806 | ||
a06ea964 | 807 | /* LD/ST128: (S+A) & 0xff0 */ |
a6bb11b2 | 808 | HOWTO (AARCH64_R (LDST128_ABS_LO12_NC), /* type */ |
a06ea964 NC |
809 | 4, /* rightshift */ |
810 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
811 | 12, /* bitsize */ | |
812 | FALSE, /* pc_relative */ | |
813 | 0, /* bitpos */ | |
814 | complain_overflow_dont, /* complain_on_overflow */ | |
815 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 816 | AARCH64_R_STR (LDST128_ABS_LO12_NC), /* name */ |
a06ea964 NC |
817 | FALSE, /* partial_inplace */ |
818 | 0xff0, /* src_mask */ | |
819 | 0xff0, /* dst_mask */ | |
820 | FALSE), /* pcrel_offset */ | |
821 | ||
f41aef5f RE |
822 | /* Set a load-literal immediate field to bits |
823 | 0x1FFFFC of G(S)-P */ | |
a6bb11b2 | 824 | HOWTO (AARCH64_R (GOT_LD_PREL19), /* type */ |
f41aef5f RE |
825 | 2, /* rightshift */ |
826 | 2, /* size (0 = byte,1 = short,2 = long) */ | |
827 | 19, /* bitsize */ | |
828 | TRUE, /* pc_relative */ | |
829 | 0, /* bitpos */ | |
830 | complain_overflow_signed, /* complain_on_overflow */ | |
831 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 832 | AARCH64_R_STR (GOT_LD_PREL19), /* name */ |
f41aef5f RE |
833 | FALSE, /* partial_inplace */ |
834 | 0xffffe0, /* src_mask */ | |
835 | 0xffffe0, /* dst_mask */ | |
836 | TRUE), /* pcrel_offset */ | |
837 | ||
a06ea964 NC |
838 | /* Get to the page for the GOT entry for the symbol |
839 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 840 | HOWTO (AARCH64_R (ADR_GOT_PAGE), /* type */ |
a06ea964 NC |
841 | 12, /* rightshift */ |
842 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
843 | 21, /* bitsize */ | |
844 | TRUE, /* pc_relative */ | |
845 | 0, /* bitpos */ | |
846 | complain_overflow_dont, /* complain_on_overflow */ | |
847 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 848 | AARCH64_R_STR (ADR_GOT_PAGE), /* name */ |
a06ea964 NC |
849 | FALSE, /* partial_inplace */ |
850 | 0x1fffff, /* src_mask */ | |
851 | 0x1fffff, /* dst_mask */ | |
852 | TRUE), /* pcrel_offset */ | |
853 | ||
a6bb11b2 YZ |
854 | /* LD64: GOT offset G(S) & 0xff8 */ |
855 | HOWTO64 (AARCH64_R (LD64_GOT_LO12_NC), /* type */ | |
a06ea964 NC |
856 | 3, /* rightshift */ |
857 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
858 | 12, /* bitsize */ | |
859 | FALSE, /* pc_relative */ | |
860 | 0, /* bitpos */ | |
861 | complain_overflow_dont, /* complain_on_overflow */ | |
862 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 863 | AARCH64_R_STR (LD64_GOT_LO12_NC), /* name */ |
a06ea964 NC |
864 | FALSE, /* partial_inplace */ |
865 | 0xff8, /* src_mask */ | |
866 | 0xff8, /* dst_mask */ | |
a6bb11b2 | 867 | FALSE), /* pcrel_offset */ |
a06ea964 | 868 | |
a6bb11b2 YZ |
869 | /* LD32: GOT offset G(S) & 0xffc */ |
870 | HOWTO32 (AARCH64_R (LD32_GOT_LO12_NC), /* type */ | |
871 | 2, /* rightshift */ | |
872 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
873 | 12, /* bitsize */ | |
874 | FALSE, /* pc_relative */ | |
875 | 0, /* bitpos */ | |
876 | complain_overflow_dont, /* complain_on_overflow */ | |
877 | bfd_elf_generic_reloc, /* special_function */ | |
878 | AARCH64_R_STR (LD32_GOT_LO12_NC), /* name */ | |
879 | FALSE, /* partial_inplace */ | |
880 | 0xffc, /* src_mask */ | |
881 | 0xffc, /* dst_mask */ | |
882 | FALSE), /* pcrel_offset */ | |
a06ea964 | 883 | |
87f5fbcc RL |
884 | /* LD64: GOT offset for the symbol. */ |
885 | HOWTO64 (AARCH64_R (LD64_GOTOFF_LO15), /* type */ | |
886 | 3, /* rightshift */ | |
887 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
888 | 12, /* bitsize */ | |
889 | FALSE, /* pc_relative */ | |
890 | 0, /* bitpos */ | |
891 | complain_overflow_unsigned, /* complain_on_overflow */ | |
892 | bfd_elf_generic_reloc, /* special_function */ | |
893 | AARCH64_R_STR (LD64_GOTOFF_LO15), /* name */ | |
894 | FALSE, /* partial_inplace */ | |
895 | 0x7ff8, /* src_mask */ | |
896 | 0x7ff8, /* dst_mask */ | |
897 | FALSE), /* pcrel_offset */ | |
898 | ||
3d715ce4 JW |
899 | /* LD32: GOT offset to the page address of GOT table. |
900 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x5ffc. */ | |
901 | HOWTO32 (AARCH64_R (LD32_GOTPAGE_LO14), /* type */ | |
902 | 2, /* rightshift */ | |
903 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
904 | 12, /* bitsize */ | |
905 | FALSE, /* pc_relative */ | |
906 | 0, /* bitpos */ | |
907 | complain_overflow_unsigned, /* complain_on_overflow */ | |
908 | bfd_elf_generic_reloc, /* special_function */ | |
909 | AARCH64_R_STR (LD32_GOTPAGE_LO14), /* name */ | |
910 | FALSE, /* partial_inplace */ | |
911 | 0x5ffc, /* src_mask */ | |
912 | 0x5ffc, /* dst_mask */ | |
913 | FALSE), /* pcrel_offset */ | |
914 | ||
a921b5bd JW |
915 | /* LD64: GOT offset to the page address of GOT table. |
916 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */ | |
917 | HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15), /* type */ | |
918 | 3, /* rightshift */ | |
919 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
920 | 12, /* bitsize */ | |
921 | FALSE, /* pc_relative */ | |
922 | 0, /* bitpos */ | |
923 | complain_overflow_unsigned, /* complain_on_overflow */ | |
924 | bfd_elf_generic_reloc, /* special_function */ | |
925 | AARCH64_R_STR (LD64_GOTPAGE_LO15), /* name */ | |
926 | FALSE, /* partial_inplace */ | |
927 | 0x7ff8, /* src_mask */ | |
928 | 0x7ff8, /* dst_mask */ | |
929 | FALSE), /* pcrel_offset */ | |
930 | ||
a06ea964 NC |
931 | /* Get to the page for the GOT entry for the symbol |
932 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 933 | HOWTO (AARCH64_R (TLSGD_ADR_PAGE21), /* type */ |
a06ea964 NC |
934 | 12, /* rightshift */ |
935 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
936 | 21, /* bitsize */ | |
937 | TRUE, /* pc_relative */ | |
938 | 0, /* bitpos */ | |
939 | complain_overflow_dont, /* complain_on_overflow */ | |
940 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 941 | AARCH64_R_STR (TLSGD_ADR_PAGE21), /* name */ |
a06ea964 NC |
942 | FALSE, /* partial_inplace */ |
943 | 0x1fffff, /* src_mask */ | |
944 | 0x1fffff, /* dst_mask */ | |
945 | TRUE), /* pcrel_offset */ | |
946 | ||
3c12b054 MS |
947 | HOWTO (AARCH64_R (TLSGD_ADR_PREL21), /* type */ |
948 | 0, /* rightshift */ | |
949 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
950 | 21, /* bitsize */ | |
951 | TRUE, /* pc_relative */ | |
952 | 0, /* bitpos */ | |
953 | complain_overflow_dont, /* complain_on_overflow */ | |
954 | bfd_elf_generic_reloc, /* special_function */ | |
955 | AARCH64_R_STR (TLSGD_ADR_PREL21), /* name */ | |
956 | FALSE, /* partial_inplace */ | |
957 | 0x1fffff, /* src_mask */ | |
958 | 0x1fffff, /* dst_mask */ | |
959 | TRUE), /* pcrel_offset */ | |
960 | ||
a06ea964 | 961 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ |
a6bb11b2 | 962 | HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC), /* type */ |
a06ea964 NC |
963 | 0, /* rightshift */ |
964 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
965 | 12, /* bitsize */ | |
966 | FALSE, /* pc_relative */ | |
967 | 0, /* bitpos */ | |
968 | complain_overflow_dont, /* complain_on_overflow */ | |
969 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 970 | AARCH64_R_STR (TLSGD_ADD_LO12_NC), /* name */ |
a06ea964 NC |
971 | FALSE, /* partial_inplace */ |
972 | 0xfff, /* src_mask */ | |
973 | 0xfff, /* dst_mask */ | |
974 | FALSE), /* pcrel_offset */ | |
975 | ||
a6bb11b2 | 976 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1), /* type */ |
a06ea964 NC |
977 | 16, /* rightshift */ |
978 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
979 | 16, /* bitsize */ | |
980 | FALSE, /* pc_relative */ | |
981 | 0, /* bitpos */ | |
982 | complain_overflow_dont, /* complain_on_overflow */ | |
983 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 984 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1), /* name */ |
a06ea964 NC |
985 | FALSE, /* partial_inplace */ |
986 | 0xffff, /* src_mask */ | |
987 | 0xffff, /* dst_mask */ | |
988 | FALSE), /* pcrel_offset */ | |
989 | ||
a6bb11b2 | 990 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */ |
a06ea964 NC |
991 | 0, /* rightshift */ |
992 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
49d8f92c | 993 | 16, /* bitsize */ |
a06ea964 NC |
994 | FALSE, /* pc_relative */ |
995 | 0, /* bitpos */ | |
996 | complain_overflow_dont, /* complain_on_overflow */ | |
997 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 998 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC), /* name */ |
a06ea964 NC |
999 | FALSE, /* partial_inplace */ |
1000 | 0xffff, /* src_mask */ | |
1001 | 0xffff, /* dst_mask */ | |
1002 | FALSE), /* pcrel_offset */ | |
1003 | ||
a6bb11b2 | 1004 | HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21), /* type */ |
a06ea964 NC |
1005 | 12, /* rightshift */ |
1006 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1007 | 21, /* bitsize */ | |
1008 | FALSE, /* pc_relative */ | |
1009 | 0, /* bitpos */ | |
1010 | complain_overflow_dont, /* complain_on_overflow */ | |
1011 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1012 | AARCH64_R_STR (TLSIE_ADR_GOTTPREL_PAGE21), /* name */ |
a06ea964 NC |
1013 | FALSE, /* partial_inplace */ |
1014 | 0x1fffff, /* src_mask */ | |
1015 | 0x1fffff, /* dst_mask */ | |
1016 | FALSE), /* pcrel_offset */ | |
1017 | ||
a6bb11b2 | 1018 | HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC), /* type */ |
a06ea964 NC |
1019 | 3, /* rightshift */ |
1020 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1021 | 12, /* bitsize */ | |
1022 | FALSE, /* pc_relative */ | |
1023 | 0, /* bitpos */ | |
1024 | complain_overflow_dont, /* complain_on_overflow */ | |
1025 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1026 | AARCH64_R_STR (TLSIE_LD64_GOTTPREL_LO12_NC), /* name */ |
a06ea964 NC |
1027 | FALSE, /* partial_inplace */ |
1028 | 0xff8, /* src_mask */ | |
1029 | 0xff8, /* dst_mask */ | |
1030 | FALSE), /* pcrel_offset */ | |
1031 | ||
a6bb11b2 YZ |
1032 | HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC), /* type */ |
1033 | 2, /* rightshift */ | |
1034 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1035 | 12, /* bitsize */ | |
1036 | FALSE, /* pc_relative */ | |
1037 | 0, /* bitpos */ | |
1038 | complain_overflow_dont, /* complain_on_overflow */ | |
1039 | bfd_elf_generic_reloc, /* special_function */ | |
1040 | AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC), /* name */ | |
1041 | FALSE, /* partial_inplace */ | |
1042 | 0xffc, /* src_mask */ | |
1043 | 0xffc, /* dst_mask */ | |
1044 | FALSE), /* pcrel_offset */ | |
1045 | ||
1046 | HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19), /* type */ | |
bb3f9ed8 | 1047 | 2, /* rightshift */ |
a06ea964 | 1048 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
043bf05a | 1049 | 19, /* bitsize */ |
a06ea964 NC |
1050 | FALSE, /* pc_relative */ |
1051 | 0, /* bitpos */ | |
1052 | complain_overflow_dont, /* complain_on_overflow */ | |
1053 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1054 | AARCH64_R_STR (TLSIE_LD_GOTTPREL_PREL19), /* name */ |
a06ea964 NC |
1055 | FALSE, /* partial_inplace */ |
1056 | 0x1ffffc, /* src_mask */ | |
1057 | 0x1ffffc, /* dst_mask */ | |
1058 | FALSE), /* pcrel_offset */ | |
1059 | ||
49df5539 JW |
1060 | /* ADD: bit[23:12] of byte offset to module TLS base address. */ |
1061 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_HI12), /* type */ | |
1062 | 12, /* rightshift */ | |
1063 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1064 | 12, /* bitsize */ | |
1065 | FALSE, /* pc_relative */ | |
1066 | 0, /* bitpos */ | |
1067 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1068 | bfd_elf_generic_reloc, /* special_function */ | |
1069 | AARCH64_R_STR (TLSLD_ADD_DTPREL_HI12), /* name */ | |
1070 | FALSE, /* partial_inplace */ | |
1071 | 0xfff, /* src_mask */ | |
1072 | 0xfff, /* dst_mask */ | |
1073 | FALSE), /* pcrel_offset */ | |
1074 | ||
70151fb5 JW |
1075 | /* Unsigned 12 bit byte offset to module TLS base address. */ |
1076 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12), /* type */ | |
1077 | 0, /* rightshift */ | |
1078 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1079 | 12, /* bitsize */ | |
1080 | FALSE, /* pc_relative */ | |
1081 | 0, /* bitpos */ | |
1082 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1083 | bfd_elf_generic_reloc, /* special_function */ | |
1084 | AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12), /* name */ | |
1085 | FALSE, /* partial_inplace */ | |
1086 | 0xfff, /* src_mask */ | |
1087 | 0xfff, /* dst_mask */ | |
1088 | FALSE), /* pcrel_offset */ | |
13289c10 JW |
1089 | |
1090 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12. */ | |
1091 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12_NC), /* type */ | |
1092 | 0, /* rightshift */ | |
1093 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1094 | 12, /* bitsize */ | |
1095 | FALSE, /* pc_relative */ | |
1096 | 0, /* bitpos */ | |
1097 | complain_overflow_dont, /* complain_on_overflow */ | |
1098 | bfd_elf_generic_reloc, /* special_function */ | |
1099 | AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12_NC), /* name */ | |
1100 | FALSE, /* partial_inplace */ | |
1101 | 0xfff, /* src_mask */ | |
1102 | 0xfff, /* dst_mask */ | |
1103 | FALSE), /* pcrel_offset */ | |
70151fb5 | 1104 | |
a12fad50 JW |
1105 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ |
1106 | HOWTO (AARCH64_R (TLSLD_ADD_LO12_NC), /* type */ | |
1107 | 0, /* rightshift */ | |
1108 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1109 | 12, /* bitsize */ | |
1110 | FALSE, /* pc_relative */ | |
1111 | 0, /* bitpos */ | |
1112 | complain_overflow_dont, /* complain_on_overflow */ | |
1113 | bfd_elf_generic_reloc, /* special_function */ | |
1114 | AARCH64_R_STR (TLSLD_ADD_LO12_NC), /* name */ | |
1115 | FALSE, /* partial_inplace */ | |
1116 | 0xfff, /* src_mask */ | |
1117 | 0xfff, /* dst_mask */ | |
1118 | FALSE), /* pcrel_offset */ | |
1119 | ||
1107e076 JW |
1120 | /* Get to the page for the GOT entry for the symbol |
1121 | (G(S) - P) using an ADRP instruction. */ | |
1122 | HOWTO (AARCH64_R (TLSLD_ADR_PAGE21), /* type */ | |
1123 | 12, /* rightshift */ | |
1124 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1125 | 21, /* bitsize */ | |
1126 | TRUE, /* pc_relative */ | |
1127 | 0, /* bitpos */ | |
1128 | complain_overflow_signed, /* complain_on_overflow */ | |
1129 | bfd_elf_generic_reloc, /* special_function */ | |
1130 | AARCH64_R_STR (TLSLD_ADR_PAGE21), /* name */ | |
1131 | FALSE, /* partial_inplace */ | |
1132 | 0x1fffff, /* src_mask */ | |
1133 | 0x1fffff, /* dst_mask */ | |
1134 | TRUE), /* pcrel_offset */ | |
1135 | ||
6c37fedc JW |
1136 | HOWTO (AARCH64_R (TLSLD_ADR_PREL21), /* type */ |
1137 | 0, /* rightshift */ | |
1138 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1139 | 21, /* bitsize */ | |
1140 | TRUE, /* pc_relative */ | |
1141 | 0, /* bitpos */ | |
1142 | complain_overflow_signed, /* complain_on_overflow */ | |
1143 | bfd_elf_generic_reloc, /* special_function */ | |
1144 | AARCH64_R_STR (TLSLD_ADR_PREL21), /* name */ | |
1145 | FALSE, /* partial_inplace */ | |
1146 | 0x1fffff, /* src_mask */ | |
1147 | 0x1fffff, /* dst_mask */ | |
1148 | TRUE), /* pcrel_offset */ | |
1149 | ||
4c562523 JW |
1150 | /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */ |
1151 | HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12), /* type */ | |
1152 | 1, /* rightshift */ | |
1153 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1154 | 11, /* bitsize */ | |
1155 | FALSE, /* pc_relative */ | |
1156 | 10, /* bitpos */ | |
1157 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1158 | bfd_elf_generic_reloc, /* special_function */ | |
1159 | AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12), /* name */ | |
1160 | FALSE, /* partial_inplace */ | |
1161 | 0x1ffc00, /* src_mask */ | |
1162 | 0x1ffc00, /* dst_mask */ | |
1163 | FALSE), /* pcrel_offset */ | |
1164 | ||
1165 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12, but no overflow check. */ | |
1166 | HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12_NC), /* type */ | |
1167 | 1, /* rightshift */ | |
1168 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1169 | 11, /* bitsize */ | |
1170 | FALSE, /* pc_relative */ | |
1171 | 10, /* bitpos */ | |
1172 | complain_overflow_dont, /* complain_on_overflow */ | |
1173 | bfd_elf_generic_reloc, /* special_function */ | |
1174 | AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12_NC), /* name */ | |
1175 | FALSE, /* partial_inplace */ | |
1176 | 0x1ffc00, /* src_mask */ | |
1177 | 0x1ffc00, /* dst_mask */ | |
1178 | FALSE), /* pcrel_offset */ | |
1179 | ||
1180 | /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */ | |
1181 | HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12), /* type */ | |
1182 | 2, /* rightshift */ | |
1183 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1184 | 10, /* bitsize */ | |
1185 | FALSE, /* pc_relative */ | |
1186 | 10, /* bitpos */ | |
1187 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1188 | bfd_elf_generic_reloc, /* special_function */ | |
1189 | AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12), /* name */ | |
1190 | FALSE, /* partial_inplace */ | |
1191 | 0x3ffc00, /* src_mask */ | |
1192 | 0x3ffc00, /* dst_mask */ | |
1193 | FALSE), /* pcrel_offset */ | |
1194 | ||
1195 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12, but no overflow check. */ | |
1196 | HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12_NC), /* type */ | |
1197 | 2, /* rightshift */ | |
1198 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1199 | 10, /* bitsize */ | |
1200 | FALSE, /* pc_relative */ | |
1201 | 10, /* bitpos */ | |
1202 | complain_overflow_dont, /* complain_on_overflow */ | |
1203 | bfd_elf_generic_reloc, /* special_function */ | |
1204 | AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12_NC), /* name */ | |
1205 | FALSE, /* partial_inplace */ | |
1206 | 0xffc00, /* src_mask */ | |
1207 | 0xffc00, /* dst_mask */ | |
1208 | FALSE), /* pcrel_offset */ | |
1209 | ||
1210 | /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */ | |
1211 | HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12), /* type */ | |
1212 | 3, /* rightshift */ | |
1213 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1214 | 9, /* bitsize */ | |
1215 | FALSE, /* pc_relative */ | |
1216 | 10, /* bitpos */ | |
1217 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1218 | bfd_elf_generic_reloc, /* special_function */ | |
1219 | AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12), /* name */ | |
1220 | FALSE, /* partial_inplace */ | |
1221 | 0x3ffc00, /* src_mask */ | |
1222 | 0x3ffc00, /* dst_mask */ | |
1223 | FALSE), /* pcrel_offset */ | |
1224 | ||
1225 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12, but no overflow check. */ | |
1226 | HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12_NC), /* type */ | |
1227 | 3, /* rightshift */ | |
1228 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1229 | 9, /* bitsize */ | |
1230 | FALSE, /* pc_relative */ | |
1231 | 10, /* bitpos */ | |
1232 | complain_overflow_dont, /* complain_on_overflow */ | |
1233 | bfd_elf_generic_reloc, /* special_function */ | |
1234 | AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12_NC), /* name */ | |
1235 | FALSE, /* partial_inplace */ | |
1236 | 0x7fc00, /* src_mask */ | |
1237 | 0x7fc00, /* dst_mask */ | |
1238 | FALSE), /* pcrel_offset */ | |
1239 | ||
1240 | /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */ | |
1241 | HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12), /* type */ | |
1242 | 0, /* rightshift */ | |
1243 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1244 | 12, /* bitsize */ | |
1245 | FALSE, /* pc_relative */ | |
1246 | 10, /* bitpos */ | |
1247 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1248 | bfd_elf_generic_reloc, /* special_function */ | |
1249 | AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12), /* name */ | |
1250 | FALSE, /* partial_inplace */ | |
1251 | 0x3ffc00, /* src_mask */ | |
1252 | 0x3ffc00, /* dst_mask */ | |
1253 | FALSE), /* pcrel_offset */ | |
1254 | ||
1255 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12, but no overflow check. */ | |
1256 | HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12_NC), /* type */ | |
1257 | 0, /* rightshift */ | |
1258 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1259 | 12, /* bitsize */ | |
1260 | FALSE, /* pc_relative */ | |
1261 | 10, /* bitpos */ | |
1262 | complain_overflow_dont, /* complain_on_overflow */ | |
1263 | bfd_elf_generic_reloc, /* special_function */ | |
1264 | AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12_NC), /* name */ | |
1265 | FALSE, /* partial_inplace */ | |
1266 | 0x3ffc00, /* src_mask */ | |
1267 | 0x3ffc00, /* dst_mask */ | |
1268 | FALSE), /* pcrel_offset */ | |
1269 | ||
49df5539 JW |
1270 | /* MOVZ: bit[15:0] of byte offset to module TLS base address. */ |
1271 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0), /* type */ | |
1272 | 0, /* rightshift */ | |
1273 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1274 | 16, /* bitsize */ | |
1275 | FALSE, /* pc_relative */ | |
1276 | 0, /* bitpos */ | |
1277 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1278 | bfd_elf_generic_reloc, /* special_function */ | |
1279 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0), /* name */ | |
1280 | FALSE, /* partial_inplace */ | |
1281 | 0xffff, /* src_mask */ | |
1282 | 0xffff, /* dst_mask */ | |
1283 | FALSE), /* pcrel_offset */ | |
1284 | ||
1285 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0. */ | |
1286 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0_NC), /* type */ | |
1287 | 0, /* rightshift */ | |
1288 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1289 | 16, /* bitsize */ | |
1290 | FALSE, /* pc_relative */ | |
1291 | 0, /* bitpos */ | |
1292 | complain_overflow_dont, /* complain_on_overflow */ | |
1293 | bfd_elf_generic_reloc, /* special_function */ | |
1294 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0_NC), /* name */ | |
1295 | FALSE, /* partial_inplace */ | |
1296 | 0xffff, /* src_mask */ | |
1297 | 0xffff, /* dst_mask */ | |
1298 | FALSE), /* pcrel_offset */ | |
1299 | ||
1300 | /* MOVZ: bit[31:16] of byte offset to module TLS base address. */ | |
1301 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G1), /* type */ | |
1302 | 16, /* rightshift */ | |
1303 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1304 | 16, /* bitsize */ | |
1305 | FALSE, /* pc_relative */ | |
1306 | 0, /* bitpos */ | |
1307 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1308 | bfd_elf_generic_reloc, /* special_function */ | |
1309 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1), /* name */ | |
1310 | FALSE, /* partial_inplace */ | |
1311 | 0xffff, /* src_mask */ | |
1312 | 0xffff, /* dst_mask */ | |
1313 | FALSE), /* pcrel_offset */ | |
1314 | ||
1315 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1. */ | |
1316 | HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G1_NC), /* type */ | |
1317 | 16, /* rightshift */ | |
1318 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1319 | 16, /* bitsize */ | |
1320 | FALSE, /* pc_relative */ | |
1321 | 0, /* bitpos */ | |
1322 | complain_overflow_dont, /* complain_on_overflow */ | |
1323 | bfd_elf_generic_reloc, /* special_function */ | |
1324 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1_NC), /* name */ | |
1325 | FALSE, /* partial_inplace */ | |
1326 | 0xffff, /* src_mask */ | |
1327 | 0xffff, /* dst_mask */ | |
1328 | FALSE), /* pcrel_offset */ | |
1329 | ||
1330 | /* MOVZ: bit[47:32] of byte offset to module TLS base address. */ | |
1331 | HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G2), /* type */ | |
1332 | 32, /* rightshift */ | |
1333 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1334 | 16, /* bitsize */ | |
1335 | FALSE, /* pc_relative */ | |
1336 | 0, /* bitpos */ | |
1337 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1338 | bfd_elf_generic_reloc, /* special_function */ | |
1339 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G2), /* name */ | |
1340 | FALSE, /* partial_inplace */ | |
1341 | 0xffff, /* src_mask */ | |
1342 | 0xffff, /* dst_mask */ | |
1343 | FALSE), /* pcrel_offset */ | |
1344 | ||
a6bb11b2 | 1345 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2), /* type */ |
bb3f9ed8 | 1346 | 32, /* rightshift */ |
a06ea964 | 1347 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1348 | 16, /* bitsize */ |
a06ea964 NC |
1349 | FALSE, /* pc_relative */ |
1350 | 0, /* bitpos */ | |
0172429c | 1351 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1352 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1353 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G2), /* name */ |
a06ea964 NC |
1354 | FALSE, /* partial_inplace */ |
1355 | 0xffff, /* src_mask */ | |
1356 | 0xffff, /* dst_mask */ | |
1357 | FALSE), /* pcrel_offset */ | |
1358 | ||
a6bb11b2 | 1359 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1), /* type */ |
bb3f9ed8 | 1360 | 16, /* rightshift */ |
a06ea964 | 1361 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1362 | 16, /* bitsize */ |
a06ea964 NC |
1363 | FALSE, /* pc_relative */ |
1364 | 0, /* bitpos */ | |
1365 | complain_overflow_dont, /* complain_on_overflow */ | |
1366 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1367 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1), /* name */ |
a06ea964 NC |
1368 | FALSE, /* partial_inplace */ |
1369 | 0xffff, /* src_mask */ | |
1370 | 0xffff, /* dst_mask */ | |
1371 | FALSE), /* pcrel_offset */ | |
1372 | ||
a6bb11b2 | 1373 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */ |
bb3f9ed8 | 1374 | 16, /* rightshift */ |
a06ea964 | 1375 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1376 | 16, /* bitsize */ |
a06ea964 NC |
1377 | FALSE, /* pc_relative */ |
1378 | 0, /* bitpos */ | |
1379 | complain_overflow_dont, /* complain_on_overflow */ | |
1380 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1381 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC), /* name */ |
a06ea964 NC |
1382 | FALSE, /* partial_inplace */ |
1383 | 0xffff, /* src_mask */ | |
1384 | 0xffff, /* dst_mask */ | |
1385 | FALSE), /* pcrel_offset */ | |
1386 | ||
a6bb11b2 | 1387 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0), /* type */ |
a06ea964 NC |
1388 | 0, /* rightshift */ |
1389 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
07875fbc | 1390 | 16, /* bitsize */ |
a06ea964 NC |
1391 | FALSE, /* pc_relative */ |
1392 | 0, /* bitpos */ | |
1393 | complain_overflow_dont, /* complain_on_overflow */ | |
1394 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1395 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0), /* name */ |
a06ea964 NC |
1396 | FALSE, /* partial_inplace */ |
1397 | 0xffff, /* src_mask */ | |
1398 | 0xffff, /* dst_mask */ | |
1399 | FALSE), /* pcrel_offset */ | |
1400 | ||
a6bb11b2 | 1401 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC), /* type */ |
a06ea964 NC |
1402 | 0, /* rightshift */ |
1403 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
07875fbc | 1404 | 16, /* bitsize */ |
a06ea964 NC |
1405 | FALSE, /* pc_relative */ |
1406 | 0, /* bitpos */ | |
1407 | complain_overflow_dont, /* complain_on_overflow */ | |
1408 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1409 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC), /* name */ |
a06ea964 NC |
1410 | FALSE, /* partial_inplace */ |
1411 | 0xffff, /* src_mask */ | |
1412 | 0xffff, /* dst_mask */ | |
1413 | FALSE), /* pcrel_offset */ | |
1414 | ||
a6bb11b2 | 1415 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12), /* type */ |
bb3f9ed8 | 1416 | 12, /* rightshift */ |
a06ea964 NC |
1417 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1418 | 12, /* bitsize */ | |
1419 | FALSE, /* pc_relative */ | |
1420 | 0, /* bitpos */ | |
bab91cce | 1421 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1422 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1423 | AARCH64_R_STR (TLSLE_ADD_TPREL_HI12), /* name */ |
a06ea964 NC |
1424 | FALSE, /* partial_inplace */ |
1425 | 0xfff, /* src_mask */ | |
1426 | 0xfff, /* dst_mask */ | |
1427 | FALSE), /* pcrel_offset */ | |
1428 | ||
a6bb11b2 | 1429 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12), /* type */ |
a06ea964 NC |
1430 | 0, /* rightshift */ |
1431 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1432 | 12, /* bitsize */ | |
1433 | FALSE, /* pc_relative */ | |
1434 | 0, /* bitpos */ | |
36e6c140 | 1435 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1436 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1437 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12), /* name */ |
a06ea964 NC |
1438 | FALSE, /* partial_inplace */ |
1439 | 0xfff, /* src_mask */ | |
1440 | 0xfff, /* dst_mask */ | |
1441 | FALSE), /* pcrel_offset */ | |
1442 | ||
a6bb11b2 | 1443 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC), /* type */ |
a06ea964 NC |
1444 | 0, /* rightshift */ |
1445 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1446 | 12, /* bitsize */ | |
1447 | FALSE, /* pc_relative */ | |
1448 | 0, /* bitpos */ | |
1449 | complain_overflow_dont, /* complain_on_overflow */ | |
1450 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1451 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC), /* name */ |
a06ea964 NC |
1452 | FALSE, /* partial_inplace */ |
1453 | 0xfff, /* src_mask */ | |
1454 | 0xfff, /* dst_mask */ | |
1455 | FALSE), /* pcrel_offset */ | |
a06ea964 | 1456 | |
a6bb11b2 | 1457 | HOWTO (AARCH64_R (TLSDESC_LD_PREL19), /* type */ |
bb3f9ed8 | 1458 | 2, /* rightshift */ |
a06ea964 | 1459 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1ada945d | 1460 | 19, /* bitsize */ |
a06ea964 NC |
1461 | TRUE, /* pc_relative */ |
1462 | 0, /* bitpos */ | |
1463 | complain_overflow_dont, /* complain_on_overflow */ | |
1464 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1465 | AARCH64_R_STR (TLSDESC_LD_PREL19), /* name */ |
a06ea964 | 1466 | FALSE, /* partial_inplace */ |
1ada945d MS |
1467 | 0x0ffffe0, /* src_mask */ |
1468 | 0x0ffffe0, /* dst_mask */ | |
a06ea964 NC |
1469 | TRUE), /* pcrel_offset */ |
1470 | ||
a6bb11b2 | 1471 | HOWTO (AARCH64_R (TLSDESC_ADR_PREL21), /* type */ |
a06ea964 NC |
1472 | 0, /* rightshift */ |
1473 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1474 | 21, /* bitsize */ | |
1475 | TRUE, /* pc_relative */ | |
1476 | 0, /* bitpos */ | |
1477 | complain_overflow_dont, /* complain_on_overflow */ | |
1478 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1479 | AARCH64_R_STR (TLSDESC_ADR_PREL21), /* name */ |
a06ea964 NC |
1480 | FALSE, /* partial_inplace */ |
1481 | 0x1fffff, /* src_mask */ | |
1482 | 0x1fffff, /* dst_mask */ | |
1483 | TRUE), /* pcrel_offset */ | |
1484 | ||
1485 | /* Get to the page for the GOT entry for the symbol | |
1486 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 1487 | HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21), /* type */ |
a06ea964 NC |
1488 | 12, /* rightshift */ |
1489 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1490 | 21, /* bitsize */ | |
1491 | TRUE, /* pc_relative */ | |
1492 | 0, /* bitpos */ | |
1493 | complain_overflow_dont, /* complain_on_overflow */ | |
1494 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1495 | AARCH64_R_STR (TLSDESC_ADR_PAGE21), /* name */ |
a06ea964 NC |
1496 | FALSE, /* partial_inplace */ |
1497 | 0x1fffff, /* src_mask */ | |
1498 | 0x1fffff, /* dst_mask */ | |
1499 | TRUE), /* pcrel_offset */ | |
1500 | ||
a6bb11b2 YZ |
1501 | /* LD64: GOT offset G(S) & 0xff8. */ |
1502 | HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12_NC), /* type */ | |
a06ea964 NC |
1503 | 3, /* rightshift */ |
1504 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1505 | 12, /* bitsize */ | |
1506 | FALSE, /* pc_relative */ | |
1507 | 0, /* bitpos */ | |
1508 | complain_overflow_dont, /* complain_on_overflow */ | |
1509 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1510 | AARCH64_R_STR (TLSDESC_LD64_LO12_NC), /* name */ |
a06ea964 | 1511 | FALSE, /* partial_inplace */ |
a6bb11b2 YZ |
1512 | 0xff8, /* src_mask */ |
1513 | 0xff8, /* dst_mask */ | |
1514 | FALSE), /* pcrel_offset */ | |
1515 | ||
1516 | /* LD32: GOT offset G(S) & 0xffc. */ | |
1517 | HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC), /* type */ | |
1518 | 2, /* rightshift */ | |
1519 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1520 | 12, /* bitsize */ | |
1521 | FALSE, /* pc_relative */ | |
1522 | 0, /* bitpos */ | |
1523 | complain_overflow_dont, /* complain_on_overflow */ | |
1524 | bfd_elf_generic_reloc, /* special_function */ | |
1525 | AARCH64_R_STR (TLSDESC_LD32_LO12_NC), /* name */ | |
1526 | FALSE, /* partial_inplace */ | |
1527 | 0xffc, /* src_mask */ | |
1528 | 0xffc, /* dst_mask */ | |
a06ea964 NC |
1529 | FALSE), /* pcrel_offset */ |
1530 | ||
1531 | /* ADD: GOT offset G(S) & 0xfff. */ | |
a6bb11b2 | 1532 | HOWTO (AARCH64_R (TLSDESC_ADD_LO12_NC), /* type */ |
a06ea964 NC |
1533 | 0, /* rightshift */ |
1534 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1535 | 12, /* bitsize */ | |
1536 | FALSE, /* pc_relative */ | |
1537 | 0, /* bitpos */ | |
1538 | complain_overflow_dont, /* complain_on_overflow */ | |
1539 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1540 | AARCH64_R_STR (TLSDESC_ADD_LO12_NC), /* name */ |
a06ea964 NC |
1541 | FALSE, /* partial_inplace */ |
1542 | 0xfff, /* src_mask */ | |
1543 | 0xfff, /* dst_mask */ | |
1544 | FALSE), /* pcrel_offset */ | |
1545 | ||
a6bb11b2 | 1546 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G1), /* type */ |
bb3f9ed8 | 1547 | 16, /* rightshift */ |
a06ea964 NC |
1548 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1549 | 12, /* bitsize */ | |
1550 | FALSE, /* pc_relative */ | |
1551 | 0, /* bitpos */ | |
1552 | complain_overflow_dont, /* complain_on_overflow */ | |
1553 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1554 | AARCH64_R_STR (TLSDESC_OFF_G1), /* name */ |
a06ea964 NC |
1555 | FALSE, /* partial_inplace */ |
1556 | 0xffff, /* src_mask */ | |
1557 | 0xffff, /* dst_mask */ | |
1558 | FALSE), /* pcrel_offset */ | |
1559 | ||
a6bb11b2 | 1560 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC), /* type */ |
a06ea964 NC |
1561 | 0, /* rightshift */ |
1562 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1563 | 12, /* bitsize */ | |
1564 | FALSE, /* pc_relative */ | |
1565 | 0, /* bitpos */ | |
1566 | complain_overflow_dont, /* complain_on_overflow */ | |
1567 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1568 | AARCH64_R_STR (TLSDESC_OFF_G0_NC), /* name */ |
a06ea964 NC |
1569 | FALSE, /* partial_inplace */ |
1570 | 0xffff, /* src_mask */ | |
1571 | 0xffff, /* dst_mask */ | |
1572 | FALSE), /* pcrel_offset */ | |
1573 | ||
a6bb11b2 | 1574 | HOWTO64 (AARCH64_R (TLSDESC_LDR), /* type */ |
a06ea964 NC |
1575 | 0, /* rightshift */ |
1576 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1577 | 12, /* bitsize */ | |
1578 | FALSE, /* pc_relative */ | |
1579 | 0, /* bitpos */ | |
1580 | complain_overflow_dont, /* complain_on_overflow */ | |
1581 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1582 | AARCH64_R_STR (TLSDESC_LDR), /* name */ |
a06ea964 NC |
1583 | FALSE, /* partial_inplace */ |
1584 | 0x0, /* src_mask */ | |
1585 | 0x0, /* dst_mask */ | |
1586 | FALSE), /* pcrel_offset */ | |
1587 | ||
a6bb11b2 | 1588 | HOWTO64 (AARCH64_R (TLSDESC_ADD), /* type */ |
a06ea964 NC |
1589 | 0, /* rightshift */ |
1590 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1591 | 12, /* bitsize */ | |
1592 | FALSE, /* pc_relative */ | |
1593 | 0, /* bitpos */ | |
1594 | complain_overflow_dont, /* complain_on_overflow */ | |
1595 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1596 | AARCH64_R_STR (TLSDESC_ADD), /* name */ |
a06ea964 NC |
1597 | FALSE, /* partial_inplace */ |
1598 | 0x0, /* src_mask */ | |
1599 | 0x0, /* dst_mask */ | |
1600 | FALSE), /* pcrel_offset */ | |
1601 | ||
a6bb11b2 | 1602 | HOWTO (AARCH64_R (TLSDESC_CALL), /* type */ |
a06ea964 NC |
1603 | 0, /* rightshift */ |
1604 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
7366006f | 1605 | 0, /* bitsize */ |
a06ea964 NC |
1606 | FALSE, /* pc_relative */ |
1607 | 0, /* bitpos */ | |
1608 | complain_overflow_dont, /* complain_on_overflow */ | |
1609 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1610 | AARCH64_R_STR (TLSDESC_CALL), /* name */ |
a06ea964 NC |
1611 | FALSE, /* partial_inplace */ |
1612 | 0x0, /* src_mask */ | |
1613 | 0x0, /* dst_mask */ | |
1614 | FALSE), /* pcrel_offset */ | |
a6bb11b2 YZ |
1615 | |
1616 | HOWTO (AARCH64_R (COPY), /* type */ | |
1617 | 0, /* rightshift */ | |
1618 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1619 | 64, /* bitsize */ | |
1620 | FALSE, /* pc_relative */ | |
1621 | 0, /* bitpos */ | |
1622 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1623 | bfd_elf_generic_reloc, /* special_function */ | |
1624 | AARCH64_R_STR (COPY), /* name */ | |
1625 | TRUE, /* partial_inplace */ | |
1626 | 0xffffffff, /* src_mask */ | |
1627 | 0xffffffff, /* dst_mask */ | |
1628 | FALSE), /* pcrel_offset */ | |
1629 | ||
1630 | HOWTO (AARCH64_R (GLOB_DAT), /* type */ | |
1631 | 0, /* rightshift */ | |
1632 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1633 | 64, /* bitsize */ | |
1634 | FALSE, /* pc_relative */ | |
1635 | 0, /* bitpos */ | |
1636 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1637 | bfd_elf_generic_reloc, /* special_function */ | |
1638 | AARCH64_R_STR (GLOB_DAT), /* name */ | |
1639 | TRUE, /* partial_inplace */ | |
1640 | 0xffffffff, /* src_mask */ | |
1641 | 0xffffffff, /* dst_mask */ | |
1642 | FALSE), /* pcrel_offset */ | |
1643 | ||
1644 | HOWTO (AARCH64_R (JUMP_SLOT), /* type */ | |
1645 | 0, /* rightshift */ | |
1646 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1647 | 64, /* bitsize */ | |
1648 | FALSE, /* pc_relative */ | |
1649 | 0, /* bitpos */ | |
1650 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1651 | bfd_elf_generic_reloc, /* special_function */ | |
1652 | AARCH64_R_STR (JUMP_SLOT), /* name */ | |
1653 | TRUE, /* partial_inplace */ | |
1654 | 0xffffffff, /* src_mask */ | |
1655 | 0xffffffff, /* dst_mask */ | |
1656 | FALSE), /* pcrel_offset */ | |
1657 | ||
1658 | HOWTO (AARCH64_R (RELATIVE), /* type */ | |
1659 | 0, /* rightshift */ | |
1660 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1661 | 64, /* bitsize */ | |
1662 | FALSE, /* pc_relative */ | |
1663 | 0, /* bitpos */ | |
1664 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1665 | bfd_elf_generic_reloc, /* special_function */ | |
1666 | AARCH64_R_STR (RELATIVE), /* name */ | |
1667 | TRUE, /* partial_inplace */ | |
1668 | ALL_ONES, /* src_mask */ | |
1669 | ALL_ONES, /* dst_mask */ | |
1670 | FALSE), /* pcrel_offset */ | |
1671 | ||
1672 | HOWTO (AARCH64_R (TLS_DTPMOD), /* type */ | |
1673 | 0, /* rightshift */ | |
1674 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1675 | 64, /* bitsize */ | |
1676 | FALSE, /* pc_relative */ | |
1677 | 0, /* bitpos */ | |
1678 | complain_overflow_dont, /* complain_on_overflow */ | |
1679 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
1680 | #if ARCH_SIZE == 64 |
1681 | AARCH64_R_STR (TLS_DTPMOD64), /* name */ | |
1682 | #else | |
a6bb11b2 | 1683 | AARCH64_R_STR (TLS_DTPMOD), /* name */ |
da0781dc | 1684 | #endif |
a6bb11b2 YZ |
1685 | FALSE, /* partial_inplace */ |
1686 | 0, /* src_mask */ | |
1687 | ALL_ONES, /* dst_mask */ | |
1688 | FALSE), /* pc_reloffset */ | |
1689 | ||
1690 | HOWTO (AARCH64_R (TLS_DTPREL), /* type */ | |
1691 | 0, /* rightshift */ | |
1692 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1693 | 64, /* bitsize */ | |
1694 | FALSE, /* pc_relative */ | |
1695 | 0, /* bitpos */ | |
1696 | complain_overflow_dont, /* complain_on_overflow */ | |
1697 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
1698 | #if ARCH_SIZE == 64 |
1699 | AARCH64_R_STR (TLS_DTPREL64), /* name */ | |
1700 | #else | |
a6bb11b2 | 1701 | AARCH64_R_STR (TLS_DTPREL), /* name */ |
da0781dc | 1702 | #endif |
a6bb11b2 YZ |
1703 | FALSE, /* partial_inplace */ |
1704 | 0, /* src_mask */ | |
1705 | ALL_ONES, /* dst_mask */ | |
1706 | FALSE), /* pcrel_offset */ | |
1707 | ||
1708 | HOWTO (AARCH64_R (TLS_TPREL), /* type */ | |
1709 | 0, /* rightshift */ | |
1710 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1711 | 64, /* bitsize */ | |
1712 | FALSE, /* pc_relative */ | |
1713 | 0, /* bitpos */ | |
1714 | complain_overflow_dont, /* complain_on_overflow */ | |
1715 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
1716 | #if ARCH_SIZE == 64 |
1717 | AARCH64_R_STR (TLS_TPREL64), /* name */ | |
1718 | #else | |
a6bb11b2 | 1719 | AARCH64_R_STR (TLS_TPREL), /* name */ |
da0781dc | 1720 | #endif |
a6bb11b2 YZ |
1721 | FALSE, /* partial_inplace */ |
1722 | 0, /* src_mask */ | |
1723 | ALL_ONES, /* dst_mask */ | |
1724 | FALSE), /* pcrel_offset */ | |
1725 | ||
1726 | HOWTO (AARCH64_R (TLSDESC), /* type */ | |
1727 | 0, /* rightshift */ | |
1728 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1729 | 64, /* bitsize */ | |
1730 | FALSE, /* pc_relative */ | |
1731 | 0, /* bitpos */ | |
1732 | complain_overflow_dont, /* complain_on_overflow */ | |
1733 | bfd_elf_generic_reloc, /* special_function */ | |
1734 | AARCH64_R_STR (TLSDESC), /* name */ | |
1735 | FALSE, /* partial_inplace */ | |
1736 | 0, /* src_mask */ | |
1737 | ALL_ONES, /* dst_mask */ | |
1738 | FALSE), /* pcrel_offset */ | |
1739 | ||
1740 | HOWTO (AARCH64_R (IRELATIVE), /* type */ | |
1741 | 0, /* rightshift */ | |
1742 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1743 | 64, /* bitsize */ | |
1744 | FALSE, /* pc_relative */ | |
1745 | 0, /* bitpos */ | |
1746 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1747 | bfd_elf_generic_reloc, /* special_function */ | |
1748 | AARCH64_R_STR (IRELATIVE), /* name */ | |
1749 | FALSE, /* partial_inplace */ | |
1750 | 0, /* src_mask */ | |
1751 | ALL_ONES, /* dst_mask */ | |
1752 | FALSE), /* pcrel_offset */ | |
1753 | ||
1754 | EMPTY_HOWTO (0), | |
a06ea964 NC |
1755 | }; |
1756 | ||
a6bb11b2 YZ |
1757 | static reloc_howto_type elfNN_aarch64_howto_none = |
1758 | HOWTO (R_AARCH64_NONE, /* type */ | |
1759 | 0, /* rightshift */ | |
6346d5ca | 1760 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a6bb11b2 YZ |
1761 | 0, /* bitsize */ |
1762 | FALSE, /* pc_relative */ | |
1763 | 0, /* bitpos */ | |
1764 | complain_overflow_dont,/* complain_on_overflow */ | |
1765 | bfd_elf_generic_reloc, /* special_function */ | |
1766 | "R_AARCH64_NONE", /* name */ | |
1767 | FALSE, /* partial_inplace */ | |
1768 | 0, /* src_mask */ | |
1769 | 0, /* dst_mask */ | |
1770 | FALSE); /* pcrel_offset */ | |
1771 | ||
1772 | /* Given HOWTO, return the bfd internal relocation enumerator. */ | |
1773 | ||
1774 | static bfd_reloc_code_real_type | |
1775 | elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type *howto) | |
1776 | { | |
1777 | const int size | |
1778 | = (int) ARRAY_SIZE (elfNN_aarch64_howto_table); | |
1779 | const ptrdiff_t offset | |
1780 | = howto - elfNN_aarch64_howto_table; | |
1781 | ||
1782 | if (offset > 0 && offset < size - 1) | |
1783 | return BFD_RELOC_AARCH64_RELOC_START + offset; | |
1784 | ||
1785 | if (howto == &elfNN_aarch64_howto_none) | |
1786 | return BFD_RELOC_AARCH64_NONE; | |
1787 | ||
1788 | return BFD_RELOC_AARCH64_RELOC_START; | |
1789 | } | |
1790 | ||
1791 | /* Given R_TYPE, return the bfd internal relocation enumerator. */ | |
1792 | ||
1793 | static bfd_reloc_code_real_type | |
1794 | elfNN_aarch64_bfd_reloc_from_type (unsigned int r_type) | |
1795 | { | |
1796 | static bfd_boolean initialized_p = FALSE; | |
1797 | /* Indexed by R_TYPE, values are offsets in the howto_table. */ | |
1798 | static unsigned int offsets[R_AARCH64_end]; | |
1799 | ||
1800 | if (initialized_p == FALSE) | |
1801 | { | |
1802 | unsigned int i; | |
1803 | ||
1804 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) | |
1805 | if (elfNN_aarch64_howto_table[i].type != 0) | |
1806 | offsets[elfNN_aarch64_howto_table[i].type] = i; | |
1807 | ||
1808 | initialized_p = TRUE; | |
1809 | } | |
1810 | ||
1811 | if (r_type == R_AARCH64_NONE || r_type == R_AARCH64_NULL) | |
1812 | return BFD_RELOC_AARCH64_NONE; | |
1813 | ||
5860e3f8 NC |
1814 | /* PR 17512: file: b371e70a. */ |
1815 | if (r_type >= R_AARCH64_end) | |
1816 | { | |
1817 | _bfd_error_handler (_("Invalid AArch64 reloc number: %d"), r_type); | |
1818 | bfd_set_error (bfd_error_bad_value); | |
1819 | return BFD_RELOC_AARCH64_NONE; | |
1820 | } | |
1821 | ||
a6bb11b2 YZ |
1822 | return BFD_RELOC_AARCH64_RELOC_START + offsets[r_type]; |
1823 | } | |
1824 | ||
1825 | struct elf_aarch64_reloc_map | |
1826 | { | |
1827 | bfd_reloc_code_real_type from; | |
1828 | bfd_reloc_code_real_type to; | |
1829 | }; | |
1830 | ||
1831 | /* Map bfd generic reloc to AArch64-specific reloc. */ | |
1832 | static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map[] = | |
1833 | { | |
1834 | {BFD_RELOC_NONE, BFD_RELOC_AARCH64_NONE}, | |
1835 | ||
1836 | /* Basic data relocations. */ | |
1837 | {BFD_RELOC_CTOR, BFD_RELOC_AARCH64_NN}, | |
1838 | {BFD_RELOC_64, BFD_RELOC_AARCH64_64}, | |
1839 | {BFD_RELOC_32, BFD_RELOC_AARCH64_32}, | |
1840 | {BFD_RELOC_16, BFD_RELOC_AARCH64_16}, | |
1841 | {BFD_RELOC_64_PCREL, BFD_RELOC_AARCH64_64_PCREL}, | |
1842 | {BFD_RELOC_32_PCREL, BFD_RELOC_AARCH64_32_PCREL}, | |
1843 | {BFD_RELOC_16_PCREL, BFD_RELOC_AARCH64_16_PCREL}, | |
1844 | }; | |
1845 | ||
1846 | /* Given the bfd internal relocation enumerator in CODE, return the | |
1847 | corresponding howto entry. */ | |
1848 | ||
1849 | static reloc_howto_type * | |
1850 | elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code) | |
1851 | { | |
1852 | unsigned int i; | |
1853 | ||
1854 | /* Convert bfd generic reloc to AArch64-specific reloc. */ | |
1855 | if (code < BFD_RELOC_AARCH64_RELOC_START | |
1856 | || code > BFD_RELOC_AARCH64_RELOC_END) | |
1857 | for (i = 0; i < ARRAY_SIZE (elf_aarch64_reloc_map); i++) | |
1858 | if (elf_aarch64_reloc_map[i].from == code) | |
1859 | { | |
1860 | code = elf_aarch64_reloc_map[i].to; | |
1861 | break; | |
1862 | } | |
1863 | ||
1864 | if (code > BFD_RELOC_AARCH64_RELOC_START | |
1865 | && code < BFD_RELOC_AARCH64_RELOC_END) | |
1866 | if (elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START].type) | |
1867 | return &elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START]; | |
1868 | ||
54757ed1 AP |
1869 | if (code == BFD_RELOC_AARCH64_NONE) |
1870 | return &elfNN_aarch64_howto_none; | |
1871 | ||
a6bb11b2 YZ |
1872 | return NULL; |
1873 | } | |
1874 | ||
a06ea964 | 1875 | static reloc_howto_type * |
cec5225b | 1876 | elfNN_aarch64_howto_from_type (unsigned int r_type) |
a06ea964 | 1877 | { |
a6bb11b2 YZ |
1878 | bfd_reloc_code_real_type val; |
1879 | reloc_howto_type *howto; | |
1880 | ||
cec5225b YZ |
1881 | #if ARCH_SIZE == 32 |
1882 | if (r_type > 256) | |
1883 | { | |
1884 | bfd_set_error (bfd_error_bad_value); | |
1885 | return NULL; | |
1886 | } | |
1887 | #endif | |
1888 | ||
a6bb11b2 YZ |
1889 | if (r_type == R_AARCH64_NONE) |
1890 | return &elfNN_aarch64_howto_none; | |
a06ea964 | 1891 | |
a6bb11b2 YZ |
1892 | val = elfNN_aarch64_bfd_reloc_from_type (r_type); |
1893 | howto = elfNN_aarch64_howto_from_bfd_reloc (val); | |
a06ea964 | 1894 | |
a6bb11b2 YZ |
1895 | if (howto != NULL) |
1896 | return howto; | |
a06ea964 | 1897 | |
a06ea964 NC |
1898 | bfd_set_error (bfd_error_bad_value); |
1899 | return NULL; | |
1900 | } | |
1901 | ||
1902 | static void | |
cec5225b | 1903 | elfNN_aarch64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc, |
a06ea964 NC |
1904 | Elf_Internal_Rela *elf_reloc) |
1905 | { | |
1906 | unsigned int r_type; | |
1907 | ||
cec5225b YZ |
1908 | r_type = ELFNN_R_TYPE (elf_reloc->r_info); |
1909 | bfd_reloc->howto = elfNN_aarch64_howto_from_type (r_type); | |
a06ea964 NC |
1910 | } |
1911 | ||
a06ea964 | 1912 | static reloc_howto_type * |
cec5225b | 1913 | elfNN_aarch64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
1914 | bfd_reloc_code_real_type code) |
1915 | { | |
a6bb11b2 | 1916 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (code); |
a06ea964 | 1917 | |
a6bb11b2 YZ |
1918 | if (howto != NULL) |
1919 | return howto; | |
a06ea964 NC |
1920 | |
1921 | bfd_set_error (bfd_error_bad_value); | |
1922 | return NULL; | |
1923 | } | |
1924 | ||
1925 | static reloc_howto_type * | |
cec5225b | 1926 | elfNN_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
1927 | const char *r_name) |
1928 | { | |
1929 | unsigned int i; | |
1930 | ||
a6bb11b2 YZ |
1931 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) |
1932 | if (elfNN_aarch64_howto_table[i].name != NULL | |
1933 | && strcasecmp (elfNN_aarch64_howto_table[i].name, r_name) == 0) | |
1934 | return &elfNN_aarch64_howto_table[i]; | |
a06ea964 NC |
1935 | |
1936 | return NULL; | |
1937 | } | |
1938 | ||
6d00b590 | 1939 | #define TARGET_LITTLE_SYM aarch64_elfNN_le_vec |
cec5225b | 1940 | #define TARGET_LITTLE_NAME "elfNN-littleaarch64" |
6d00b590 | 1941 | #define TARGET_BIG_SYM aarch64_elfNN_be_vec |
cec5225b | 1942 | #define TARGET_BIG_NAME "elfNN-bigaarch64" |
a06ea964 | 1943 | |
a06ea964 NC |
1944 | /* The linker script knows the section names for placement. |
1945 | The entry_names are used to do simple name mangling on the stubs. | |
1946 | Given a function name, and its type, the stub can be found. The | |
1947 | name can be changed. The only requirement is the %s be present. */ | |
1948 | #define STUB_ENTRY_NAME "__%s_veneer" | |
1949 | ||
1950 | /* The name of the dynamic interpreter. This is put in the .interp | |
1951 | section. */ | |
1952 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
1953 | ||
1954 | #define AARCH64_MAX_FWD_BRANCH_OFFSET \ | |
1955 | (((1 << 25) - 1) << 2) | |
1956 | #define AARCH64_MAX_BWD_BRANCH_OFFSET \ | |
1957 | (-((1 << 25) << 2)) | |
1958 | ||
1959 | #define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1) | |
1960 | #define AARCH64_MIN_ADRP_IMM (-(1 << 20)) | |
1961 | ||
1962 | static int | |
1963 | aarch64_valid_for_adrp_p (bfd_vma value, bfd_vma place) | |
1964 | { | |
1965 | bfd_signed_vma offset = (bfd_signed_vma) (PG (value) - PG (place)) >> 12; | |
1966 | return offset <= AARCH64_MAX_ADRP_IMM && offset >= AARCH64_MIN_ADRP_IMM; | |
1967 | } | |
1968 | ||
1969 | static int | |
1970 | aarch64_valid_branch_p (bfd_vma value, bfd_vma place) | |
1971 | { | |
1972 | bfd_signed_vma offset = (bfd_signed_vma) (value - place); | |
1973 | return (offset <= AARCH64_MAX_FWD_BRANCH_OFFSET | |
1974 | && offset >= AARCH64_MAX_BWD_BRANCH_OFFSET); | |
1975 | } | |
1976 | ||
1977 | static const uint32_t aarch64_adrp_branch_stub [] = | |
1978 | { | |
1979 | 0x90000010, /* adrp ip0, X */ | |
1980 | /* R_AARCH64_ADR_HI21_PCREL(X) */ | |
1981 | 0x91000210, /* add ip0, ip0, :lo12:X */ | |
1982 | /* R_AARCH64_ADD_ABS_LO12_NC(X) */ | |
1983 | 0xd61f0200, /* br ip0 */ | |
1984 | }; | |
1985 | ||
1986 | static const uint32_t aarch64_long_branch_stub[] = | |
1987 | { | |
cec5225b | 1988 | #if ARCH_SIZE == 64 |
a06ea964 | 1989 | 0x58000090, /* ldr ip0, 1f */ |
cec5225b YZ |
1990 | #else |
1991 | 0x18000090, /* ldr wip0, 1f */ | |
1992 | #endif | |
a06ea964 NC |
1993 | 0x10000011, /* adr ip1, #0 */ |
1994 | 0x8b110210, /* add ip0, ip0, ip1 */ | |
1995 | 0xd61f0200, /* br ip0 */ | |
cec5225b YZ |
1996 | 0x00000000, /* 1: .xword or .word |
1997 | R_AARCH64_PRELNN(X) + 12 | |
a06ea964 NC |
1998 | */ |
1999 | 0x00000000, | |
2000 | }; | |
2001 | ||
68fcca92 JW |
2002 | static const uint32_t aarch64_erratum_835769_stub[] = |
2003 | { | |
2004 | 0x00000000, /* Placeholder for multiply accumulate. */ | |
2005 | 0x14000000, /* b <label> */ | |
2006 | }; | |
2007 | ||
4106101c MS |
2008 | static const uint32_t aarch64_erratum_843419_stub[] = |
2009 | { | |
2010 | 0x00000000, /* Placeholder for LDR instruction. */ | |
2011 | 0x14000000, /* b <label> */ | |
2012 | }; | |
2013 | ||
a06ea964 NC |
2014 | /* Section name for stubs is the associated section name plus this |
2015 | string. */ | |
2016 | #define STUB_SUFFIX ".stub" | |
2017 | ||
cec5225b | 2018 | enum elf_aarch64_stub_type |
a06ea964 NC |
2019 | { |
2020 | aarch64_stub_none, | |
2021 | aarch64_stub_adrp_branch, | |
2022 | aarch64_stub_long_branch, | |
68fcca92 | 2023 | aarch64_stub_erratum_835769_veneer, |
4106101c | 2024 | aarch64_stub_erratum_843419_veneer, |
a06ea964 NC |
2025 | }; |
2026 | ||
cec5225b | 2027 | struct elf_aarch64_stub_hash_entry |
a06ea964 NC |
2028 | { |
2029 | /* Base hash table entry structure. */ | |
2030 | struct bfd_hash_entry root; | |
2031 | ||
2032 | /* The stub section. */ | |
2033 | asection *stub_sec; | |
2034 | ||
2035 | /* Offset within stub_sec of the beginning of this stub. */ | |
2036 | bfd_vma stub_offset; | |
2037 | ||
2038 | /* Given the symbol's value and its section we can determine its final | |
2039 | value when building the stubs (so the stub knows where to jump). */ | |
2040 | bfd_vma target_value; | |
2041 | asection *target_section; | |
2042 | ||
cec5225b | 2043 | enum elf_aarch64_stub_type stub_type; |
a06ea964 NC |
2044 | |
2045 | /* The symbol table entry, if any, that this was derived from. */ | |
cec5225b | 2046 | struct elf_aarch64_link_hash_entry *h; |
a06ea964 NC |
2047 | |
2048 | /* Destination symbol type */ | |
2049 | unsigned char st_type; | |
2050 | ||
2051 | /* Where this stub is being called from, or, in the case of combined | |
2052 | stub sections, the first input section in the group. */ | |
2053 | asection *id_sec; | |
2054 | ||
2055 | /* The name for the local symbol at the start of this stub. The | |
2056 | stub name in the hash table has to be unique; this does not, so | |
2057 | it can be friendlier. */ | |
2058 | char *output_name; | |
68fcca92 JW |
2059 | |
2060 | /* The instruction which caused this stub to be generated (only valid for | |
2061 | erratum 835769 workaround stubs at present). */ | |
2062 | uint32_t veneered_insn; | |
4106101c MS |
2063 | |
2064 | /* In an erratum 843419 workaround stub, the ADRP instruction offset. */ | |
2065 | bfd_vma adrp_offset; | |
a06ea964 NC |
2066 | }; |
2067 | ||
2068 | /* Used to build a map of a section. This is required for mixed-endian | |
2069 | code/data. */ | |
2070 | ||
cec5225b | 2071 | typedef struct elf_elf_section_map |
a06ea964 NC |
2072 | { |
2073 | bfd_vma vma; | |
2074 | char type; | |
2075 | } | |
cec5225b | 2076 | elf_aarch64_section_map; |
a06ea964 NC |
2077 | |
2078 | ||
2079 | typedef struct _aarch64_elf_section_data | |
2080 | { | |
2081 | struct bfd_elf_section_data elf; | |
2082 | unsigned int mapcount; | |
2083 | unsigned int mapsize; | |
cec5225b | 2084 | elf_aarch64_section_map *map; |
a06ea964 NC |
2085 | } |
2086 | _aarch64_elf_section_data; | |
2087 | ||
cec5225b | 2088 | #define elf_aarch64_section_data(sec) \ |
a06ea964 NC |
2089 | ((_aarch64_elf_section_data *) elf_section_data (sec)) |
2090 | ||
4e8516b2 AP |
2091 | /* The size of the thread control block which is defined to be two pointers. */ |
2092 | #define TCB_SIZE (ARCH_SIZE/8)*2 | |
a06ea964 NC |
2093 | |
2094 | struct elf_aarch64_local_symbol | |
2095 | { | |
2096 | unsigned int got_type; | |
2097 | bfd_signed_vma got_refcount; | |
2098 | bfd_vma got_offset; | |
2099 | ||
2100 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The | |
2101 | offset is from the end of the jump table and reserved entries | |
2102 | within the PLTGOT. | |
2103 | ||
2104 | The magic value (bfd_vma) -1 indicates that an offset has not be | |
2105 | allocated. */ | |
2106 | bfd_vma tlsdesc_got_jump_table_offset; | |
2107 | }; | |
2108 | ||
2109 | struct elf_aarch64_obj_tdata | |
2110 | { | |
2111 | struct elf_obj_tdata root; | |
2112 | ||
2113 | /* local symbol descriptors */ | |
2114 | struct elf_aarch64_local_symbol *locals; | |
2115 | ||
2116 | /* Zero to warn when linking objects with incompatible enum sizes. */ | |
2117 | int no_enum_size_warning; | |
2118 | ||
2119 | /* Zero to warn when linking objects with incompatible wchar_t sizes. */ | |
2120 | int no_wchar_size_warning; | |
2121 | }; | |
2122 | ||
2123 | #define elf_aarch64_tdata(bfd) \ | |
2124 | ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any) | |
2125 | ||
cec5225b | 2126 | #define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals) |
a06ea964 NC |
2127 | |
2128 | #define is_aarch64_elf(bfd) \ | |
2129 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
2130 | && elf_tdata (bfd) != NULL \ | |
2131 | && elf_object_id (bfd) == AARCH64_ELF_DATA) | |
2132 | ||
2133 | static bfd_boolean | |
cec5225b | 2134 | elfNN_aarch64_mkobject (bfd *abfd) |
a06ea964 NC |
2135 | { |
2136 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_aarch64_obj_tdata), | |
2137 | AARCH64_ELF_DATA); | |
2138 | } | |
2139 | ||
cec5225b YZ |
2140 | #define elf_aarch64_hash_entry(ent) \ |
2141 | ((struct elf_aarch64_link_hash_entry *)(ent)) | |
a06ea964 NC |
2142 | |
2143 | #define GOT_UNKNOWN 0 | |
2144 | #define GOT_NORMAL 1 | |
2145 | #define GOT_TLS_GD 2 | |
2146 | #define GOT_TLS_IE 4 | |
2147 | #define GOT_TLSDESC_GD 8 | |
2148 | ||
2149 | #define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD)) | |
2150 | ||
2151 | /* AArch64 ELF linker hash entry. */ | |
cec5225b | 2152 | struct elf_aarch64_link_hash_entry |
a06ea964 NC |
2153 | { |
2154 | struct elf_link_hash_entry root; | |
2155 | ||
2156 | /* Track dynamic relocs copied for this symbol. */ | |
2157 | struct elf_dyn_relocs *dyn_relocs; | |
2158 | ||
a06ea964 NC |
2159 | /* Since PLT entries have variable size, we need to record the |
2160 | index into .got.plt instead of recomputing it from the PLT | |
2161 | offset. */ | |
2162 | bfd_signed_vma plt_got_offset; | |
2163 | ||
2164 | /* Bit mask representing the type of GOT entry(s) if any required by | |
2165 | this symbol. */ | |
2166 | unsigned int got_type; | |
2167 | ||
2168 | /* A pointer to the most recently used stub hash entry against this | |
2169 | symbol. */ | |
cec5225b | 2170 | struct elf_aarch64_stub_hash_entry *stub_cache; |
a06ea964 NC |
2171 | |
2172 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset | |
2173 | is from the end of the jump table and reserved entries within the PLTGOT. | |
2174 | ||
2175 | The magic value (bfd_vma) -1 indicates that an offset has not | |
2176 | be allocated. */ | |
2177 | bfd_vma tlsdesc_got_jump_table_offset; | |
2178 | }; | |
2179 | ||
2180 | static unsigned int | |
cec5225b | 2181 | elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry *h, |
a06ea964 NC |
2182 | bfd *abfd, |
2183 | unsigned long r_symndx) | |
2184 | { | |
2185 | if (h) | |
cec5225b | 2186 | return elf_aarch64_hash_entry (h)->got_type; |
a06ea964 | 2187 | |
cec5225b | 2188 | if (! elf_aarch64_locals (abfd)) |
a06ea964 NC |
2189 | return GOT_UNKNOWN; |
2190 | ||
cec5225b | 2191 | return elf_aarch64_locals (abfd)[r_symndx].got_type; |
a06ea964 NC |
2192 | } |
2193 | ||
a06ea964 | 2194 | /* Get the AArch64 elf linker hash table from a link_info structure. */ |
cec5225b YZ |
2195 | #define elf_aarch64_hash_table(info) \ |
2196 | ((struct elf_aarch64_link_hash_table *) ((info)->hash)) | |
a06ea964 NC |
2197 | |
2198 | #define aarch64_stub_hash_lookup(table, string, create, copy) \ | |
cec5225b | 2199 | ((struct elf_aarch64_stub_hash_entry *) \ |
a06ea964 NC |
2200 | bfd_hash_lookup ((table), (string), (create), (copy))) |
2201 | ||
2202 | /* AArch64 ELF linker hash table. */ | |
cec5225b | 2203 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
2204 | { |
2205 | /* The main hash table. */ | |
2206 | struct elf_link_hash_table root; | |
2207 | ||
2208 | /* Nonzero to force PIC branch veneers. */ | |
2209 | int pic_veneer; | |
2210 | ||
68fcca92 JW |
2211 | /* Fix erratum 835769. */ |
2212 | int fix_erratum_835769; | |
2213 | ||
4106101c MS |
2214 | /* Fix erratum 843419. */ |
2215 | int fix_erratum_843419; | |
2216 | ||
2217 | /* Enable ADRP->ADR rewrite for erratum 843419 workaround. */ | |
2218 | int fix_erratum_843419_adr; | |
2219 | ||
a06ea964 NC |
2220 | /* The number of bytes in the initial entry in the PLT. */ |
2221 | bfd_size_type plt_header_size; | |
2222 | ||
2223 | /* The number of bytes in the subsequent PLT etries. */ | |
2224 | bfd_size_type plt_entry_size; | |
2225 | ||
2226 | /* Short-cuts to get to dynamic linker sections. */ | |
2227 | asection *sdynbss; | |
2228 | asection *srelbss; | |
2229 | ||
2230 | /* Small local sym cache. */ | |
2231 | struct sym_cache sym_cache; | |
2232 | ||
2233 | /* For convenience in allocate_dynrelocs. */ | |
2234 | bfd *obfd; | |
2235 | ||
2236 | /* The amount of space used by the reserved portion of the sgotplt | |
2237 | section, plus whatever space is used by the jump slots. */ | |
2238 | bfd_vma sgotplt_jump_table_size; | |
2239 | ||
2240 | /* The stub hash table. */ | |
2241 | struct bfd_hash_table stub_hash_table; | |
2242 | ||
2243 | /* Linker stub bfd. */ | |
2244 | bfd *stub_bfd; | |
2245 | ||
2246 | /* Linker call-backs. */ | |
2247 | asection *(*add_stub_section) (const char *, asection *); | |
2248 | void (*layout_sections_again) (void); | |
2249 | ||
2250 | /* Array to keep track of which stub sections have been created, and | |
2251 | information on stub grouping. */ | |
2252 | struct map_stub | |
2253 | { | |
2254 | /* This is the section to which stubs in the group will be | |
2255 | attached. */ | |
2256 | asection *link_sec; | |
2257 | /* The stub section. */ | |
2258 | asection *stub_sec; | |
2259 | } *stub_group; | |
2260 | ||
cec5225b | 2261 | /* Assorted information used by elfNN_aarch64_size_stubs. */ |
a06ea964 | 2262 | unsigned int bfd_count; |
7292b3ac | 2263 | unsigned int top_index; |
a06ea964 NC |
2264 | asection **input_list; |
2265 | ||
2266 | /* The offset into splt of the PLT entry for the TLS descriptor | |
2267 | resolver. Special values are 0, if not necessary (or not found | |
2268 | to be necessary yet), and -1 if needed but not determined | |
2269 | yet. */ | |
2270 | bfd_vma tlsdesc_plt; | |
2271 | ||
2272 | /* The GOT offset for the lazy trampoline. Communicated to the | |
2273 | loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1 | |
2274 | indicates an offset is not allocated. */ | |
2275 | bfd_vma dt_tlsdesc_got; | |
1419bbe5 WN |
2276 | |
2277 | /* Used by local STT_GNU_IFUNC symbols. */ | |
2278 | htab_t loc_hash_table; | |
2279 | void * loc_hash_memory; | |
a06ea964 NC |
2280 | }; |
2281 | ||
a06ea964 NC |
2282 | /* Create an entry in an AArch64 ELF linker hash table. */ |
2283 | ||
2284 | static struct bfd_hash_entry * | |
cec5225b | 2285 | elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry, |
a06ea964 NC |
2286 | struct bfd_hash_table *table, |
2287 | const char *string) | |
2288 | { | |
cec5225b YZ |
2289 | struct elf_aarch64_link_hash_entry *ret = |
2290 | (struct elf_aarch64_link_hash_entry *) entry; | |
a06ea964 NC |
2291 | |
2292 | /* Allocate the structure if it has not already been allocated by a | |
2293 | subclass. */ | |
2294 | if (ret == NULL) | |
2295 | ret = bfd_hash_allocate (table, | |
cec5225b | 2296 | sizeof (struct elf_aarch64_link_hash_entry)); |
a06ea964 NC |
2297 | if (ret == NULL) |
2298 | return (struct bfd_hash_entry *) ret; | |
2299 | ||
2300 | /* Call the allocation method of the superclass. */ | |
cec5225b | 2301 | ret = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
2302 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
2303 | table, string)); | |
2304 | if (ret != NULL) | |
2305 | { | |
2306 | ret->dyn_relocs = NULL; | |
a06ea964 NC |
2307 | ret->got_type = GOT_UNKNOWN; |
2308 | ret->plt_got_offset = (bfd_vma) - 1; | |
2309 | ret->stub_cache = NULL; | |
2310 | ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
2311 | } | |
2312 | ||
2313 | return (struct bfd_hash_entry *) ret; | |
2314 | } | |
2315 | ||
2316 | /* Initialize an entry in the stub hash table. */ | |
2317 | ||
2318 | static struct bfd_hash_entry * | |
2319 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
2320 | struct bfd_hash_table *table, const char *string) | |
2321 | { | |
2322 | /* Allocate the structure if it has not already been allocated by a | |
2323 | subclass. */ | |
2324 | if (entry == NULL) | |
2325 | { | |
2326 | entry = bfd_hash_allocate (table, | |
2327 | sizeof (struct | |
cec5225b | 2328 | elf_aarch64_stub_hash_entry)); |
a06ea964 NC |
2329 | if (entry == NULL) |
2330 | return entry; | |
2331 | } | |
2332 | ||
2333 | /* Call the allocation method of the superclass. */ | |
2334 | entry = bfd_hash_newfunc (entry, table, string); | |
2335 | if (entry != NULL) | |
2336 | { | |
cec5225b | 2337 | struct elf_aarch64_stub_hash_entry *eh; |
a06ea964 NC |
2338 | |
2339 | /* Initialize the local fields. */ | |
cec5225b | 2340 | eh = (struct elf_aarch64_stub_hash_entry *) entry; |
4106101c | 2341 | eh->adrp_offset = 0; |
a06ea964 NC |
2342 | eh->stub_sec = NULL; |
2343 | eh->stub_offset = 0; | |
2344 | eh->target_value = 0; | |
2345 | eh->target_section = NULL; | |
2346 | eh->stub_type = aarch64_stub_none; | |
2347 | eh->h = NULL; | |
2348 | eh->id_sec = NULL; | |
2349 | } | |
2350 | ||
2351 | return entry; | |
2352 | } | |
2353 | ||
1419bbe5 WN |
2354 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry |
2355 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
2356 | as global symbol. We reuse indx and dynstr_index for local symbol | |
2357 | hash since they aren't used by global symbols in this backend. */ | |
2358 | ||
2359 | static hashval_t | |
2360 | elfNN_aarch64_local_htab_hash (const void *ptr) | |
2361 | { | |
2362 | struct elf_link_hash_entry *h | |
2363 | = (struct elf_link_hash_entry *) ptr; | |
2364 | return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); | |
2365 | } | |
2366 | ||
2367 | /* Compare local hash entries. */ | |
2368 | ||
2369 | static int | |
2370 | elfNN_aarch64_local_htab_eq (const void *ptr1, const void *ptr2) | |
2371 | { | |
2372 | struct elf_link_hash_entry *h1 | |
2373 | = (struct elf_link_hash_entry *) ptr1; | |
2374 | struct elf_link_hash_entry *h2 | |
2375 | = (struct elf_link_hash_entry *) ptr2; | |
2376 | ||
2377 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
2378 | } | |
2379 | ||
2380 | /* Find and/or create a hash entry for local symbol. */ | |
2381 | ||
2382 | static struct elf_link_hash_entry * | |
2383 | elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table *htab, | |
2384 | bfd *abfd, const Elf_Internal_Rela *rel, | |
2385 | bfd_boolean create) | |
2386 | { | |
2387 | struct elf_aarch64_link_hash_entry e, *ret; | |
2388 | asection *sec = abfd->sections; | |
2389 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, | |
2390 | ELFNN_R_SYM (rel->r_info)); | |
2391 | void **slot; | |
2392 | ||
2393 | e.root.indx = sec->id; | |
2394 | e.root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2395 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, | |
2396 | create ? INSERT : NO_INSERT); | |
2397 | ||
2398 | if (!slot) | |
2399 | return NULL; | |
2400 | ||
2401 | if (*slot) | |
2402 | { | |
2403 | ret = (struct elf_aarch64_link_hash_entry *) *slot; | |
2404 | return &ret->root; | |
2405 | } | |
2406 | ||
2407 | ret = (struct elf_aarch64_link_hash_entry *) | |
2408 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, | |
2409 | sizeof (struct elf_aarch64_link_hash_entry)); | |
2410 | if (ret) | |
2411 | { | |
2412 | memset (ret, 0, sizeof (*ret)); | |
2413 | ret->root.indx = sec->id; | |
2414 | ret->root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2415 | ret->root.dynindx = -1; | |
2416 | *slot = ret; | |
2417 | } | |
2418 | return &ret->root; | |
2419 | } | |
a06ea964 NC |
2420 | |
2421 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
2422 | ||
2423 | static void | |
cec5225b | 2424 | elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info, |
a06ea964 NC |
2425 | struct elf_link_hash_entry *dir, |
2426 | struct elf_link_hash_entry *ind) | |
2427 | { | |
cec5225b | 2428 | struct elf_aarch64_link_hash_entry *edir, *eind; |
a06ea964 | 2429 | |
cec5225b YZ |
2430 | edir = (struct elf_aarch64_link_hash_entry *) dir; |
2431 | eind = (struct elf_aarch64_link_hash_entry *) ind; | |
a06ea964 NC |
2432 | |
2433 | if (eind->dyn_relocs != NULL) | |
2434 | { | |
2435 | if (edir->dyn_relocs != NULL) | |
2436 | { | |
2437 | struct elf_dyn_relocs **pp; | |
2438 | struct elf_dyn_relocs *p; | |
2439 | ||
2440 | /* Add reloc counts against the indirect sym to the direct sym | |
2441 | list. Merge any entries against the same section. */ | |
2442 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) | |
2443 | { | |
2444 | struct elf_dyn_relocs *q; | |
2445 | ||
2446 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
2447 | if (q->sec == p->sec) | |
2448 | { | |
2449 | q->pc_count += p->pc_count; | |
2450 | q->count += p->count; | |
2451 | *pp = p->next; | |
2452 | break; | |
2453 | } | |
2454 | if (q == NULL) | |
2455 | pp = &p->next; | |
2456 | } | |
2457 | *pp = edir->dyn_relocs; | |
2458 | } | |
2459 | ||
2460 | edir->dyn_relocs = eind->dyn_relocs; | |
2461 | eind->dyn_relocs = NULL; | |
2462 | } | |
2463 | ||
a06ea964 NC |
2464 | if (ind->root.type == bfd_link_hash_indirect) |
2465 | { | |
2466 | /* Copy over PLT info. */ | |
2467 | if (dir->got.refcount <= 0) | |
2468 | { | |
2469 | edir->got_type = eind->got_type; | |
2470 | eind->got_type = GOT_UNKNOWN; | |
2471 | } | |
2472 | } | |
2473 | ||
2474 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
2475 | } | |
2476 | ||
68faa637 AM |
2477 | /* Destroy an AArch64 elf linker hash table. */ |
2478 | ||
2479 | static void | |
d495ab0d | 2480 | elfNN_aarch64_link_hash_table_free (bfd *obfd) |
68faa637 AM |
2481 | { |
2482 | struct elf_aarch64_link_hash_table *ret | |
d495ab0d | 2483 | = (struct elf_aarch64_link_hash_table *) obfd->link.hash; |
68faa637 AM |
2484 | |
2485 | if (ret->loc_hash_table) | |
2486 | htab_delete (ret->loc_hash_table); | |
2487 | if (ret->loc_hash_memory) | |
2488 | objalloc_free ((struct objalloc *) ret->loc_hash_memory); | |
2489 | ||
2490 | bfd_hash_table_free (&ret->stub_hash_table); | |
d495ab0d | 2491 | _bfd_elf_link_hash_table_free (obfd); |
68faa637 AM |
2492 | } |
2493 | ||
a06ea964 NC |
2494 | /* Create an AArch64 elf linker hash table. */ |
2495 | ||
2496 | static struct bfd_link_hash_table * | |
cec5225b | 2497 | elfNN_aarch64_link_hash_table_create (bfd *abfd) |
a06ea964 | 2498 | { |
cec5225b YZ |
2499 | struct elf_aarch64_link_hash_table *ret; |
2500 | bfd_size_type amt = sizeof (struct elf_aarch64_link_hash_table); | |
a06ea964 | 2501 | |
7bf52ea2 | 2502 | ret = bfd_zmalloc (amt); |
a06ea964 NC |
2503 | if (ret == NULL) |
2504 | return NULL; | |
2505 | ||
2506 | if (!_bfd_elf_link_hash_table_init | |
cec5225b YZ |
2507 | (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc, |
2508 | sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA)) | |
a06ea964 NC |
2509 | { |
2510 | free (ret); | |
2511 | return NULL; | |
2512 | } | |
2513 | ||
a06ea964 NC |
2514 | ret->plt_header_size = PLT_ENTRY_SIZE; |
2515 | ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE; | |
a06ea964 | 2516 | ret->obfd = abfd; |
a06ea964 NC |
2517 | ret->dt_tlsdesc_got = (bfd_vma) - 1; |
2518 | ||
2519 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc, | |
cec5225b | 2520 | sizeof (struct elf_aarch64_stub_hash_entry))) |
a06ea964 | 2521 | { |
d495ab0d | 2522 | _bfd_elf_link_hash_table_free (abfd); |
a06ea964 NC |
2523 | return NULL; |
2524 | } | |
2525 | ||
1419bbe5 WN |
2526 | ret->loc_hash_table = htab_try_create (1024, |
2527 | elfNN_aarch64_local_htab_hash, | |
2528 | elfNN_aarch64_local_htab_eq, | |
2529 | NULL); | |
2530 | ret->loc_hash_memory = objalloc_create (); | |
2531 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
2532 | { | |
d495ab0d | 2533 | elfNN_aarch64_link_hash_table_free (abfd); |
1419bbe5 WN |
2534 | return NULL; |
2535 | } | |
d495ab0d | 2536 | ret->root.root.hash_table_free = elfNN_aarch64_link_hash_table_free; |
1419bbe5 | 2537 | |
a06ea964 NC |
2538 | return &ret->root.root; |
2539 | } | |
2540 | ||
a06ea964 NC |
2541 | static bfd_boolean |
2542 | aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section, | |
2543 | bfd_vma offset, bfd_vma value) | |
2544 | { | |
2545 | reloc_howto_type *howto; | |
2546 | bfd_vma place; | |
2547 | ||
cec5225b | 2548 | howto = elfNN_aarch64_howto_from_type (r_type); |
a06ea964 NC |
2549 | place = (input_section->output_section->vma + input_section->output_offset |
2550 | + offset); | |
caed7120 YZ |
2551 | |
2552 | r_type = elfNN_aarch64_bfd_reloc_from_type (r_type); | |
2553 | value = _bfd_aarch64_elf_resolve_relocation (r_type, place, value, 0, FALSE); | |
2554 | return _bfd_aarch64_elf_put_addend (input_bfd, | |
2555 | input_section->contents + offset, r_type, | |
2556 | howto, value); | |
a06ea964 NC |
2557 | } |
2558 | ||
cec5225b | 2559 | static enum elf_aarch64_stub_type |
a06ea964 NC |
2560 | aarch64_select_branch_stub (bfd_vma value, bfd_vma place) |
2561 | { | |
2562 | if (aarch64_valid_for_adrp_p (value, place)) | |
2563 | return aarch64_stub_adrp_branch; | |
2564 | return aarch64_stub_long_branch; | |
2565 | } | |
2566 | ||
2567 | /* Determine the type of stub needed, if any, for a call. */ | |
2568 | ||
cec5225b | 2569 | static enum elf_aarch64_stub_type |
a06ea964 NC |
2570 | aarch64_type_of_stub (struct bfd_link_info *info, |
2571 | asection *input_sec, | |
2572 | const Elf_Internal_Rela *rel, | |
f678ded7 | 2573 | asection *sym_sec, |
a06ea964 | 2574 | unsigned char st_type, |
cec5225b | 2575 | struct elf_aarch64_link_hash_entry *hash, |
a06ea964 NC |
2576 | bfd_vma destination) |
2577 | { | |
2578 | bfd_vma location; | |
2579 | bfd_signed_vma branch_offset; | |
2580 | unsigned int r_type; | |
cec5225b YZ |
2581 | struct elf_aarch64_link_hash_table *globals; |
2582 | enum elf_aarch64_stub_type stub_type = aarch64_stub_none; | |
a06ea964 NC |
2583 | bfd_boolean via_plt_p; |
2584 | ||
f678ded7 JW |
2585 | if (st_type != STT_FUNC |
2586 | && (sym_sec != bfd_abs_section_ptr)) | |
a06ea964 NC |
2587 | return stub_type; |
2588 | ||
cec5225b | 2589 | globals = elf_aarch64_hash_table (info); |
a06ea964 NC |
2590 | via_plt_p = (globals->root.splt != NULL && hash != NULL |
2591 | && hash->root.plt.offset != (bfd_vma) - 1); | |
07f9ddfe | 2592 | /* Make sure call to plt stub can fit into the branch range. */ |
a06ea964 | 2593 | if (via_plt_p) |
07f9ddfe JW |
2594 | destination = (globals->root.splt->output_section->vma |
2595 | + globals->root.splt->output_offset | |
2596 | + hash->root.plt.offset); | |
a06ea964 NC |
2597 | |
2598 | /* Determine where the call point is. */ | |
2599 | location = (input_sec->output_offset | |
2600 | + input_sec->output_section->vma + rel->r_offset); | |
2601 | ||
2602 | branch_offset = (bfd_signed_vma) (destination - location); | |
2603 | ||
cec5225b | 2604 | r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
2605 | |
2606 | /* We don't want to redirect any old unconditional jump in this way, | |
2607 | only one which is being used for a sibcall, where it is | |
2608 | acceptable for the IP0 and IP1 registers to be clobbered. */ | |
a6bb11b2 | 2609 | if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26)) |
a06ea964 NC |
2610 | && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET |
2611 | || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET)) | |
2612 | { | |
2613 | stub_type = aarch64_stub_long_branch; | |
2614 | } | |
2615 | ||
2616 | return stub_type; | |
2617 | } | |
2618 | ||
2619 | /* Build a name for an entry in the stub hash table. */ | |
2620 | ||
2621 | static char * | |
cec5225b | 2622 | elfNN_aarch64_stub_name (const asection *input_section, |
a06ea964 | 2623 | const asection *sym_sec, |
cec5225b | 2624 | const struct elf_aarch64_link_hash_entry *hash, |
a06ea964 NC |
2625 | const Elf_Internal_Rela *rel) |
2626 | { | |
2627 | char *stub_name; | |
2628 | bfd_size_type len; | |
2629 | ||
2630 | if (hash) | |
2631 | { | |
2632 | len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1; | |
2633 | stub_name = bfd_malloc (len); | |
2634 | if (stub_name != NULL) | |
2635 | snprintf (stub_name, len, "%08x_%s+%" BFD_VMA_FMT "x", | |
2636 | (unsigned int) input_section->id, | |
2637 | hash->root.root.root.string, | |
2638 | rel->r_addend); | |
2639 | } | |
2640 | else | |
2641 | { | |
2642 | len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1; | |
2643 | stub_name = bfd_malloc (len); | |
2644 | if (stub_name != NULL) | |
2645 | snprintf (stub_name, len, "%08x_%x:%x+%" BFD_VMA_FMT "x", | |
2646 | (unsigned int) input_section->id, | |
2647 | (unsigned int) sym_sec->id, | |
cec5225b | 2648 | (unsigned int) ELFNN_R_SYM (rel->r_info), |
a06ea964 NC |
2649 | rel->r_addend); |
2650 | } | |
2651 | ||
2652 | return stub_name; | |
2653 | } | |
2654 | ||
2655 | /* Look up an entry in the stub hash. Stub entries are cached because | |
2656 | creating the stub name takes a bit of time. */ | |
2657 | ||
cec5225b YZ |
2658 | static struct elf_aarch64_stub_hash_entry * |
2659 | elfNN_aarch64_get_stub_entry (const asection *input_section, | |
a06ea964 NC |
2660 | const asection *sym_sec, |
2661 | struct elf_link_hash_entry *hash, | |
2662 | const Elf_Internal_Rela *rel, | |
cec5225b | 2663 | struct elf_aarch64_link_hash_table *htab) |
a06ea964 | 2664 | { |
cec5225b YZ |
2665 | struct elf_aarch64_stub_hash_entry *stub_entry; |
2666 | struct elf_aarch64_link_hash_entry *h = | |
2667 | (struct elf_aarch64_link_hash_entry *) hash; | |
a06ea964 NC |
2668 | const asection *id_sec; |
2669 | ||
2670 | if ((input_section->flags & SEC_CODE) == 0) | |
2671 | return NULL; | |
2672 | ||
2673 | /* If this input section is part of a group of sections sharing one | |
2674 | stub section, then use the id of the first section in the group. | |
2675 | Stub names need to include a section id, as there may well be | |
2676 | more than one stub used to reach say, printf, and we need to | |
2677 | distinguish between them. */ | |
2678 | id_sec = htab->stub_group[input_section->id].link_sec; | |
2679 | ||
2680 | if (h != NULL && h->stub_cache != NULL | |
2681 | && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec) | |
2682 | { | |
2683 | stub_entry = h->stub_cache; | |
2684 | } | |
2685 | else | |
2686 | { | |
2687 | char *stub_name; | |
2688 | ||
cec5225b | 2689 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel); |
a06ea964 NC |
2690 | if (stub_name == NULL) |
2691 | return NULL; | |
2692 | ||
2693 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
2694 | stub_name, FALSE, FALSE); | |
2695 | if (h != NULL) | |
2696 | h->stub_cache = stub_entry; | |
2697 | ||
2698 | free (stub_name); | |
2699 | } | |
2700 | ||
2701 | return stub_entry; | |
2702 | } | |
2703 | ||
a06ea964 | 2704 | |
66585675 MS |
2705 | /* Create a stub section. */ |
2706 | ||
2707 | static asection * | |
2708 | _bfd_aarch64_create_stub_section (asection *section, | |
2709 | struct elf_aarch64_link_hash_table *htab) | |
2710 | { | |
2711 | size_t namelen; | |
2712 | bfd_size_type len; | |
2713 | char *s_name; | |
2714 | ||
2715 | namelen = strlen (section->name); | |
2716 | len = namelen + sizeof (STUB_SUFFIX); | |
2717 | s_name = bfd_alloc (htab->stub_bfd, len); | |
2718 | if (s_name == NULL) | |
2719 | return NULL; | |
2720 | ||
2721 | memcpy (s_name, section->name, namelen); | |
2722 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
2723 | return (*htab->add_stub_section) (s_name, section); | |
2724 | } | |
2725 | ||
2726 | ||
fc6d53be MS |
2727 | /* Find or create a stub section for a link section. |
2728 | ||
2729 | Fix or create the stub section used to collect stubs attached to | |
2730 | the specified link section. */ | |
2731 | ||
2732 | static asection * | |
2733 | _bfd_aarch64_get_stub_for_link_section (asection *link_section, | |
2734 | struct elf_aarch64_link_hash_table *htab) | |
2735 | { | |
2736 | if (htab->stub_group[link_section->id].stub_sec == NULL) | |
2737 | htab->stub_group[link_section->id].stub_sec | |
2738 | = _bfd_aarch64_create_stub_section (link_section, htab); | |
2739 | return htab->stub_group[link_section->id].stub_sec; | |
2740 | } | |
2741 | ||
2742 | ||
ef857521 MS |
2743 | /* Find or create a stub section in the stub group for an input |
2744 | section. */ | |
2745 | ||
2746 | static asection * | |
2747 | _bfd_aarch64_create_or_find_stub_sec (asection *section, | |
2748 | struct elf_aarch64_link_hash_table *htab) | |
a06ea964 | 2749 | { |
fc6d53be MS |
2750 | asection *link_sec = htab->stub_group[section->id].link_sec; |
2751 | return _bfd_aarch64_get_stub_for_link_section (link_sec, htab); | |
ef857521 MS |
2752 | } |
2753 | ||
2754 | ||
2755 | /* Add a new stub entry in the stub group associated with an input | |
2756 | section to the stub hash. Not all fields of the new stub entry are | |
2757 | initialised. */ | |
2758 | ||
2759 | static struct elf_aarch64_stub_hash_entry * | |
2760 | _bfd_aarch64_add_stub_entry_in_group (const char *stub_name, | |
2761 | asection *section, | |
2762 | struct elf_aarch64_link_hash_table *htab) | |
2763 | { | |
2764 | asection *link_sec; | |
2765 | asection *stub_sec; | |
2766 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
2767 | ||
2768 | link_sec = htab->stub_group[section->id].link_sec; | |
2769 | stub_sec = _bfd_aarch64_create_or_find_stub_sec (section, htab); | |
2770 | ||
a06ea964 NC |
2771 | /* Enter this entry into the linker stub hash table. */ |
2772 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
2773 | TRUE, FALSE); | |
2774 | if (stub_entry == NULL) | |
2775 | { | |
2776 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), | |
2777 | section->owner, stub_name); | |
2778 | return NULL; | |
2779 | } | |
2780 | ||
2781 | stub_entry->stub_sec = stub_sec; | |
2782 | stub_entry->stub_offset = 0; | |
2783 | stub_entry->id_sec = link_sec; | |
2784 | ||
2785 | return stub_entry; | |
2786 | } | |
2787 | ||
4106101c MS |
2788 | /* Add a new stub entry in the final stub section to the stub hash. |
2789 | Not all fields of the new stub entry are initialised. */ | |
2790 | ||
2791 | static struct elf_aarch64_stub_hash_entry * | |
2792 | _bfd_aarch64_add_stub_entry_after (const char *stub_name, | |
2793 | asection *link_section, | |
2794 | struct elf_aarch64_link_hash_table *htab) | |
2795 | { | |
2796 | asection *stub_sec; | |
2797 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
2798 | ||
2799 | stub_sec = _bfd_aarch64_get_stub_for_link_section (link_section, htab); | |
2800 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
2801 | TRUE, FALSE); | |
2802 | if (stub_entry == NULL) | |
2803 | { | |
2804 | (*_bfd_error_handler) (_("cannot create stub entry %s"), stub_name); | |
2805 | return NULL; | |
2806 | } | |
2807 | ||
2808 | stub_entry->stub_sec = stub_sec; | |
2809 | stub_entry->stub_offset = 0; | |
2810 | stub_entry->id_sec = link_section; | |
2811 | ||
2812 | return stub_entry; | |
2813 | } | |
2814 | ||
2815 | ||
a06ea964 NC |
2816 | static bfd_boolean |
2817 | aarch64_build_one_stub (struct bfd_hash_entry *gen_entry, | |
2818 | void *in_arg ATTRIBUTE_UNUSED) | |
2819 | { | |
cec5225b | 2820 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
2821 | asection *stub_sec; |
2822 | bfd *stub_bfd; | |
2823 | bfd_byte *loc; | |
2824 | bfd_vma sym_value; | |
68fcca92 JW |
2825 | bfd_vma veneered_insn_loc; |
2826 | bfd_vma veneer_entry_loc; | |
2827 | bfd_signed_vma branch_offset = 0; | |
a06ea964 NC |
2828 | unsigned int template_size; |
2829 | const uint32_t *template; | |
2830 | unsigned int i; | |
2831 | ||
2832 | /* Massage our args to the form they really have. */ | |
cec5225b | 2833 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
2834 | |
2835 | stub_sec = stub_entry->stub_sec; | |
2836 | ||
2837 | /* Make a note of the offset within the stubs for this entry. */ | |
2838 | stub_entry->stub_offset = stub_sec->size; | |
2839 | loc = stub_sec->contents + stub_entry->stub_offset; | |
2840 | ||
2841 | stub_bfd = stub_sec->owner; | |
2842 | ||
2843 | /* This is the address of the stub destination. */ | |
2844 | sym_value = (stub_entry->target_value | |
2845 | + stub_entry->target_section->output_offset | |
2846 | + stub_entry->target_section->output_section->vma); | |
2847 | ||
2848 | if (stub_entry->stub_type == aarch64_stub_long_branch) | |
2849 | { | |
2850 | bfd_vma place = (stub_entry->stub_offset + stub_sec->output_section->vma | |
2851 | + stub_sec->output_offset); | |
2852 | ||
2853 | /* See if we can relax the stub. */ | |
2854 | if (aarch64_valid_for_adrp_p (sym_value, place)) | |
2855 | stub_entry->stub_type = aarch64_select_branch_stub (sym_value, place); | |
2856 | } | |
2857 | ||
2858 | switch (stub_entry->stub_type) | |
2859 | { | |
2860 | case aarch64_stub_adrp_branch: | |
2861 | template = aarch64_adrp_branch_stub; | |
2862 | template_size = sizeof (aarch64_adrp_branch_stub); | |
2863 | break; | |
2864 | case aarch64_stub_long_branch: | |
2865 | template = aarch64_long_branch_stub; | |
2866 | template_size = sizeof (aarch64_long_branch_stub); | |
2867 | break; | |
68fcca92 JW |
2868 | case aarch64_stub_erratum_835769_veneer: |
2869 | template = aarch64_erratum_835769_stub; | |
2870 | template_size = sizeof (aarch64_erratum_835769_stub); | |
2871 | break; | |
4106101c MS |
2872 | case aarch64_stub_erratum_843419_veneer: |
2873 | template = aarch64_erratum_843419_stub; | |
2874 | template_size = sizeof (aarch64_erratum_843419_stub); | |
2875 | break; | |
a06ea964 | 2876 | default: |
8e2fe09f | 2877 | abort (); |
a06ea964 NC |
2878 | } |
2879 | ||
2880 | for (i = 0; i < (template_size / sizeof template[0]); i++) | |
2881 | { | |
2882 | bfd_putl32 (template[i], loc); | |
2883 | loc += 4; | |
2884 | } | |
2885 | ||
2886 | template_size = (template_size + 7) & ~7; | |
2887 | stub_sec->size += template_size; | |
2888 | ||
2889 | switch (stub_entry->stub_type) | |
2890 | { | |
2891 | case aarch64_stub_adrp_branch: | |
a6bb11b2 | 2892 | if (aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21), stub_bfd, stub_sec, |
a06ea964 NC |
2893 | stub_entry->stub_offset, sym_value)) |
2894 | /* The stub would not have been relaxed if the offset was out | |
2895 | of range. */ | |
2896 | BFD_FAIL (); | |
2897 | ||
93ca8569 TB |
2898 | if (aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC), stub_bfd, stub_sec, |
2899 | stub_entry->stub_offset + 4, sym_value)) | |
2900 | BFD_FAIL (); | |
a06ea964 NC |
2901 | break; |
2902 | ||
2903 | case aarch64_stub_long_branch: | |
2904 | /* We want the value relative to the address 12 bytes back from the | |
2905 | value itself. */ | |
93ca8569 TB |
2906 | if (aarch64_relocate (AARCH64_R (PRELNN), stub_bfd, stub_sec, |
2907 | stub_entry->stub_offset + 16, sym_value + 12)) | |
2908 | BFD_FAIL (); | |
a06ea964 | 2909 | break; |
68fcca92 JW |
2910 | |
2911 | case aarch64_stub_erratum_835769_veneer: | |
2912 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
2913 | + stub_entry->target_section->output_offset | |
2914 | + stub_entry->target_value; | |
2915 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
2916 | + stub_entry->stub_sec->output_offset | |
2917 | + stub_entry->stub_offset; | |
2918 | branch_offset = veneered_insn_loc - veneer_entry_loc; | |
2919 | branch_offset >>= 2; | |
2920 | branch_offset &= 0x3ffffff; | |
2921 | bfd_putl32 (stub_entry->veneered_insn, | |
2922 | stub_sec->contents + stub_entry->stub_offset); | |
2923 | bfd_putl32 (template[1] | branch_offset, | |
2924 | stub_sec->contents + stub_entry->stub_offset + 4); | |
2925 | break; | |
2926 | ||
4106101c MS |
2927 | case aarch64_stub_erratum_843419_veneer: |
2928 | if (aarch64_relocate (AARCH64_R (JUMP26), stub_bfd, stub_sec, | |
2929 | stub_entry->stub_offset + 4, sym_value + 4)) | |
2930 | BFD_FAIL (); | |
2931 | break; | |
2932 | ||
a06ea964 | 2933 | default: |
8e2fe09f | 2934 | abort (); |
a06ea964 NC |
2935 | } |
2936 | ||
2937 | return TRUE; | |
2938 | } | |
2939 | ||
2940 | /* As above, but don't actually build the stub. Just bump offset so | |
2941 | we know stub section sizes. */ | |
2942 | ||
2943 | static bfd_boolean | |
2944 | aarch64_size_one_stub (struct bfd_hash_entry *gen_entry, | |
2945 | void *in_arg ATTRIBUTE_UNUSED) | |
2946 | { | |
cec5225b | 2947 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
2948 | int size; |
2949 | ||
2950 | /* Massage our args to the form they really have. */ | |
cec5225b | 2951 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
2952 | |
2953 | switch (stub_entry->stub_type) | |
2954 | { | |
2955 | case aarch64_stub_adrp_branch: | |
2956 | size = sizeof (aarch64_adrp_branch_stub); | |
2957 | break; | |
2958 | case aarch64_stub_long_branch: | |
2959 | size = sizeof (aarch64_long_branch_stub); | |
2960 | break; | |
68fcca92 JW |
2961 | case aarch64_stub_erratum_835769_veneer: |
2962 | size = sizeof (aarch64_erratum_835769_stub); | |
2963 | break; | |
4106101c MS |
2964 | case aarch64_stub_erratum_843419_veneer: |
2965 | size = sizeof (aarch64_erratum_843419_stub); | |
2966 | break; | |
a06ea964 | 2967 | default: |
8e2fe09f | 2968 | abort (); |
a06ea964 NC |
2969 | } |
2970 | ||
2971 | size = (size + 7) & ~7; | |
2972 | stub_entry->stub_sec->size += size; | |
2973 | return TRUE; | |
2974 | } | |
2975 | ||
2976 | /* External entry points for sizing and building linker stubs. */ | |
2977 | ||
2978 | /* Set up various things so that we can make a list of input sections | |
2979 | for each output section included in the link. Returns -1 on error, | |
2980 | 0 when no stubs will be needed, and 1 on success. */ | |
2981 | ||
2982 | int | |
cec5225b | 2983 | elfNN_aarch64_setup_section_lists (bfd *output_bfd, |
a06ea964 NC |
2984 | struct bfd_link_info *info) |
2985 | { | |
2986 | bfd *input_bfd; | |
2987 | unsigned int bfd_count; | |
7292b3ac | 2988 | unsigned int top_id, top_index; |
a06ea964 NC |
2989 | asection *section; |
2990 | asection **input_list, **list; | |
2991 | bfd_size_type amt; | |
cec5225b YZ |
2992 | struct elf_aarch64_link_hash_table *htab = |
2993 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
2994 | |
2995 | if (!is_elf_hash_table (htab)) | |
2996 | return 0; | |
2997 | ||
2998 | /* Count the number of input BFDs and find the top input section id. */ | |
2999 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
c72f2fb2 | 3000 | input_bfd != NULL; input_bfd = input_bfd->link.next) |
a06ea964 NC |
3001 | { |
3002 | bfd_count += 1; | |
3003 | for (section = input_bfd->sections; | |
3004 | section != NULL; section = section->next) | |
3005 | { | |
3006 | if (top_id < section->id) | |
3007 | top_id = section->id; | |
3008 | } | |
3009 | } | |
3010 | htab->bfd_count = bfd_count; | |
3011 | ||
3012 | amt = sizeof (struct map_stub) * (top_id + 1); | |
3013 | htab->stub_group = bfd_zmalloc (amt); | |
3014 | if (htab->stub_group == NULL) | |
3015 | return -1; | |
3016 | ||
3017 | /* We can't use output_bfd->section_count here to find the top output | |
3018 | section index as some sections may have been removed, and | |
3019 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
3020 | for (section = output_bfd->sections, top_index = 0; | |
3021 | section != NULL; section = section->next) | |
3022 | { | |
3023 | if (top_index < section->index) | |
3024 | top_index = section->index; | |
3025 | } | |
3026 | ||
3027 | htab->top_index = top_index; | |
3028 | amt = sizeof (asection *) * (top_index + 1); | |
3029 | input_list = bfd_malloc (amt); | |
3030 | htab->input_list = input_list; | |
3031 | if (input_list == NULL) | |
3032 | return -1; | |
3033 | ||
3034 | /* For sections we aren't interested in, mark their entries with a | |
3035 | value we can check later. */ | |
3036 | list = input_list + top_index; | |
3037 | do | |
3038 | *list = bfd_abs_section_ptr; | |
3039 | while (list-- != input_list); | |
3040 | ||
3041 | for (section = output_bfd->sections; | |
3042 | section != NULL; section = section->next) | |
3043 | { | |
3044 | if ((section->flags & SEC_CODE) != 0) | |
3045 | input_list[section->index] = NULL; | |
3046 | } | |
3047 | ||
3048 | return 1; | |
3049 | } | |
3050 | ||
cec5225b | 3051 | /* Used by elfNN_aarch64_next_input_section and group_sections. */ |
a06ea964 NC |
3052 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3053 | ||
3054 | /* The linker repeatedly calls this function for each input section, | |
3055 | in the order that input sections are linked into output sections. | |
3056 | Build lists of input sections to determine groupings between which | |
3057 | we may insert linker stubs. */ | |
3058 | ||
3059 | void | |
cec5225b | 3060 | elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec) |
a06ea964 | 3061 | { |
cec5225b YZ |
3062 | struct elf_aarch64_link_hash_table *htab = |
3063 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
3064 | |
3065 | if (isec->output_section->index <= htab->top_index) | |
3066 | { | |
3067 | asection **list = htab->input_list + isec->output_section->index; | |
3068 | ||
3069 | if (*list != bfd_abs_section_ptr) | |
3070 | { | |
3071 | /* Steal the link_sec pointer for our list. */ | |
3072 | /* This happens to make the list in reverse order, | |
3073 | which is what we want. */ | |
3074 | PREV_SEC (isec) = *list; | |
3075 | *list = isec; | |
3076 | } | |
3077 | } | |
3078 | } | |
3079 | ||
3080 | /* See whether we can group stub sections together. Grouping stub | |
3081 | sections may result in fewer stubs. More importantly, we need to | |
3082 | put all .init* and .fini* stubs at the beginning of the .init or | |
3083 | .fini output sections respectively, because glibc splits the | |
3084 | _init and _fini functions into multiple parts. Putting a stub in | |
3085 | the middle of a function is not a good idea. */ | |
3086 | ||
3087 | static void | |
cec5225b | 3088 | group_sections (struct elf_aarch64_link_hash_table *htab, |
a06ea964 NC |
3089 | bfd_size_type stub_group_size, |
3090 | bfd_boolean stubs_always_before_branch) | |
3091 | { | |
3092 | asection **list = htab->input_list + htab->top_index; | |
3093 | ||
3094 | do | |
3095 | { | |
3096 | asection *tail = *list; | |
3097 | ||
3098 | if (tail == bfd_abs_section_ptr) | |
3099 | continue; | |
3100 | ||
3101 | while (tail != NULL) | |
3102 | { | |
3103 | asection *curr; | |
3104 | asection *prev; | |
3105 | bfd_size_type total; | |
3106 | ||
3107 | curr = tail; | |
3108 | total = tail->size; | |
3109 | while ((prev = PREV_SEC (curr)) != NULL | |
3110 | && ((total += curr->output_offset - prev->output_offset) | |
3111 | < stub_group_size)) | |
3112 | curr = prev; | |
3113 | ||
3114 | /* OK, the size from the start of CURR to the end is less | |
3115 | than stub_group_size and thus can be handled by one stub | |
3116 | section. (Or the tail section is itself larger than | |
3117 | stub_group_size, in which case we may be toast.) | |
3118 | We should really be keeping track of the total size of | |
3119 | stubs added here, as stubs contribute to the final output | |
3120 | section size. */ | |
3121 | do | |
3122 | { | |
3123 | prev = PREV_SEC (tail); | |
3124 | /* Set up this stub group. */ | |
3125 | htab->stub_group[tail->id].link_sec = curr; | |
3126 | } | |
3127 | while (tail != curr && (tail = prev) != NULL); | |
3128 | ||
3129 | /* But wait, there's more! Input sections up to stub_group_size | |
3130 | bytes before the stub section can be handled by it too. */ | |
3131 | if (!stubs_always_before_branch) | |
3132 | { | |
3133 | total = 0; | |
3134 | while (prev != NULL | |
3135 | && ((total += tail->output_offset - prev->output_offset) | |
3136 | < stub_group_size)) | |
3137 | { | |
3138 | tail = prev; | |
3139 | prev = PREV_SEC (tail); | |
3140 | htab->stub_group[tail->id].link_sec = curr; | |
3141 | } | |
3142 | } | |
3143 | tail = prev; | |
3144 | } | |
3145 | } | |
3146 | while (list-- != htab->input_list); | |
3147 | ||
3148 | free (htab->input_list); | |
3149 | } | |
3150 | ||
3151 | #undef PREV_SEC | |
3152 | ||
68fcca92 JW |
3153 | #define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1)) |
3154 | ||
3155 | #define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5) | |
3156 | #define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5) | |
3157 | #define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5) | |
3158 | #define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5) | |
3159 | #define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5) | |
3160 | #define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5) | |
3161 | ||
3162 | #define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000) | |
3163 | #define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1) | |
3164 | #define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3) | |
3165 | #define AARCH64_ZR 0x1f | |
3166 | ||
3167 | /* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for | |
3168 | LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */ | |
3169 | ||
3170 | #define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1) | |
3171 | #define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000) | |
3172 | #define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000) | |
3173 | #define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000) | |
3174 | #define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000) | |
3175 | #define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000) | |
3176 | #define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000) | |
3177 | #define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000) | |
3178 | #define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000) | |
3179 | #define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400) | |
3180 | #define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800) | |
3181 | #define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00) | |
3182 | #define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800) | |
3183 | #define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000) | |
3184 | #define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000) | |
3185 | #define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000) | |
3186 | #define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000) | |
3187 | #define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000) | |
3188 | ||
3d14faea MS |
3189 | /* Classify an INSN if it is indeed a load/store. |
3190 | ||
3191 | Return TRUE if INSN is a LD/ST instruction otherwise return FALSE. | |
3192 | ||
3193 | For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2 | |
3194 | is set equal to RT. | |
3195 | ||
3196 | For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. | |
3197 | ||
3198 | */ | |
68fcca92 JW |
3199 | |
3200 | static bfd_boolean | |
3d14faea | 3201 | aarch64_mem_op_p (uint32_t insn, unsigned int *rt, unsigned int *rt2, |
68fcca92 JW |
3202 | bfd_boolean *pair, bfd_boolean *load) |
3203 | { | |
3204 | uint32_t opcode; | |
3205 | unsigned int r; | |
3206 | uint32_t opc = 0; | |
3207 | uint32_t v = 0; | |
3208 | uint32_t opc_v = 0; | |
3209 | ||
3210 | /* Bail out quickly if INSN doesn't fall into the the load-store | |
3211 | encoding space. */ | |
3212 | if (!AARCH64_LDST (insn)) | |
3213 | return FALSE; | |
3214 | ||
3215 | *pair = FALSE; | |
3216 | *load = FALSE; | |
3217 | if (AARCH64_LDST_EX (insn)) | |
3218 | { | |
3219 | *rt = AARCH64_RT (insn); | |
3d14faea | 3220 | *rt2 = *rt; |
68fcca92 JW |
3221 | if (AARCH64_BIT (insn, 21) == 1) |
3222 | { | |
3223 | *pair = TRUE; | |
3d14faea | 3224 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
3225 | } |
3226 | *load = AARCH64_LD (insn); | |
3227 | return TRUE; | |
3228 | } | |
3229 | else if (AARCH64_LDST_NAP (insn) | |
3230 | || AARCH64_LDSTP_PI (insn) | |
3231 | || AARCH64_LDSTP_O (insn) | |
3232 | || AARCH64_LDSTP_PRE (insn)) | |
3233 | { | |
3234 | *pair = TRUE; | |
3235 | *rt = AARCH64_RT (insn); | |
3d14faea | 3236 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
3237 | *load = AARCH64_LD (insn); |
3238 | return TRUE; | |
3239 | } | |
3240 | else if (AARCH64_LDST_PCREL (insn) | |
3241 | || AARCH64_LDST_UI (insn) | |
3242 | || AARCH64_LDST_PIIMM (insn) | |
3243 | || AARCH64_LDST_U (insn) | |
3244 | || AARCH64_LDST_PREIMM (insn) | |
3245 | || AARCH64_LDST_RO (insn) | |
3246 | || AARCH64_LDST_UIMM (insn)) | |
3247 | { | |
3248 | *rt = AARCH64_RT (insn); | |
3d14faea | 3249 | *rt2 = *rt; |
68fcca92 JW |
3250 | if (AARCH64_LDST_PCREL (insn)) |
3251 | *load = TRUE; | |
3252 | opc = AARCH64_BITS (insn, 22, 2); | |
3253 | v = AARCH64_BIT (insn, 26); | |
3254 | opc_v = opc | (v << 2); | |
3255 | *load = (opc_v == 1 || opc_v == 2 || opc_v == 3 | |
3256 | || opc_v == 5 || opc_v == 7); | |
3257 | return TRUE; | |
3258 | } | |
3259 | else if (AARCH64_LDST_SIMD_M (insn) | |
3260 | || AARCH64_LDST_SIMD_M_PI (insn)) | |
3261 | { | |
3262 | *rt = AARCH64_RT (insn); | |
3263 | *load = AARCH64_BIT (insn, 22); | |
3264 | opcode = (insn >> 12) & 0xf; | |
3265 | switch (opcode) | |
3266 | { | |
3267 | case 0: | |
3268 | case 2: | |
3d14faea | 3269 | *rt2 = *rt + 3; |
68fcca92 JW |
3270 | break; |
3271 | ||
3272 | case 4: | |
3273 | case 6: | |
3d14faea | 3274 | *rt2 = *rt + 2; |
68fcca92 JW |
3275 | break; |
3276 | ||
3277 | case 7: | |
3d14faea | 3278 | *rt2 = *rt; |
68fcca92 JW |
3279 | break; |
3280 | ||
3281 | case 8: | |
3282 | case 10: | |
3d14faea | 3283 | *rt2 = *rt + 1; |
68fcca92 JW |
3284 | break; |
3285 | ||
3286 | default: | |
3287 | return FALSE; | |
3288 | } | |
3289 | return TRUE; | |
3290 | } | |
3291 | else if (AARCH64_LDST_SIMD_S (insn) | |
3292 | || AARCH64_LDST_SIMD_S_PI (insn)) | |
3293 | { | |
3294 | *rt = AARCH64_RT (insn); | |
3295 | r = (insn >> 21) & 1; | |
3296 | *load = AARCH64_BIT (insn, 22); | |
3297 | opcode = (insn >> 13) & 0x7; | |
3298 | switch (opcode) | |
3299 | { | |
3300 | case 0: | |
3301 | case 2: | |
3302 | case 4: | |
3d14faea | 3303 | *rt2 = *rt + r; |
68fcca92 JW |
3304 | break; |
3305 | ||
3306 | case 1: | |
3307 | case 3: | |
3308 | case 5: | |
3d14faea | 3309 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
3310 | break; |
3311 | ||
3312 | case 6: | |
3d14faea | 3313 | *rt2 = *rt + r; |
68fcca92 JW |
3314 | break; |
3315 | ||
3316 | case 7: | |
3d14faea | 3317 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
3318 | break; |
3319 | ||
3320 | default: | |
3321 | return FALSE; | |
3322 | } | |
3323 | return TRUE; | |
3324 | } | |
3325 | ||
3326 | return FALSE; | |
3327 | } | |
3328 | ||
3329 | /* Return TRUE if INSN is multiply-accumulate. */ | |
3330 | ||
3331 | static bfd_boolean | |
3332 | aarch64_mlxl_p (uint32_t insn) | |
3333 | { | |
3334 | uint32_t op31 = AARCH64_OP31 (insn); | |
3335 | ||
3336 | if (AARCH64_MAC (insn) | |
3337 | && (op31 == 0 || op31 == 1 || op31 == 5) | |
3338 | /* Exclude MUL instructions which are encoded as a multiple accumulate | |
3339 | with RA = XZR. */ | |
3340 | && AARCH64_RA (insn) != AARCH64_ZR) | |
3341 | return TRUE; | |
3342 | ||
3343 | return FALSE; | |
3344 | } | |
3345 | ||
3346 | /* Some early revisions of the Cortex-A53 have an erratum (835769) whereby | |
3347 | it is possible for a 64-bit multiply-accumulate instruction to generate an | |
3348 | incorrect result. The details are quite complex and hard to | |
3349 | determine statically, since branches in the code may exist in some | |
3350 | circumstances, but all cases end with a memory (load, store, or | |
3351 | prefetch) instruction followed immediately by the multiply-accumulate | |
3352 | operation. We employ a linker patching technique, by moving the potentially | |
3353 | affected multiply-accumulate instruction into a patch region and replacing | |
3354 | the original instruction with a branch to the patch. This function checks | |
3355 | if INSN_1 is the memory operation followed by a multiply-accumulate | |
3356 | operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE | |
3357 | if INSN_1 and INSN_2 are safe. */ | |
3358 | ||
3359 | static bfd_boolean | |
3360 | aarch64_erratum_sequence (uint32_t insn_1, uint32_t insn_2) | |
3361 | { | |
3362 | uint32_t rt; | |
3d14faea | 3363 | uint32_t rt2; |
68fcca92 JW |
3364 | uint32_t rn; |
3365 | uint32_t rm; | |
3366 | uint32_t ra; | |
3367 | bfd_boolean pair; | |
3368 | bfd_boolean load; | |
3369 | ||
3370 | if (aarch64_mlxl_p (insn_2) | |
3d14faea | 3371 | && aarch64_mem_op_p (insn_1, &rt, &rt2, &pair, &load)) |
68fcca92 JW |
3372 | { |
3373 | /* Any SIMD memory op is independent of the subsequent MLA | |
3374 | by definition of the erratum. */ | |
3375 | if (AARCH64_BIT (insn_1, 26)) | |
3376 | return TRUE; | |
3377 | ||
3378 | /* If not SIMD, check for integer memory ops and MLA relationship. */ | |
3379 | rn = AARCH64_RN (insn_2); | |
3380 | ra = AARCH64_RA (insn_2); | |
3381 | rm = AARCH64_RM (insn_2); | |
3382 | ||
3383 | /* If this is a load and there's a true(RAW) dependency, we are safe | |
3384 | and this is not an erratum sequence. */ | |
3385 | if (load && | |
3386 | (rt == rn || rt == rm || rt == ra | |
3d14faea | 3387 | || (pair && (rt2 == rn || rt2 == rm || rt2 == ra)))) |
68fcca92 JW |
3388 | return FALSE; |
3389 | ||
3390 | /* We conservatively put out stubs for all other cases (including | |
3391 | writebacks). */ | |
3392 | return TRUE; | |
3393 | } | |
3394 | ||
3395 | return FALSE; | |
3396 | } | |
3397 | ||
520c7b56 JW |
3398 | /* Used to order a list of mapping symbols by address. */ |
3399 | ||
3400 | static int | |
3401 | elf_aarch64_compare_mapping (const void *a, const void *b) | |
3402 | { | |
3403 | const elf_aarch64_section_map *amap = (const elf_aarch64_section_map *) a; | |
3404 | const elf_aarch64_section_map *bmap = (const elf_aarch64_section_map *) b; | |
3405 | ||
3406 | if (amap->vma > bmap->vma) | |
3407 | return 1; | |
3408 | else if (amap->vma < bmap->vma) | |
3409 | return -1; | |
3410 | else if (amap->type > bmap->type) | |
3411 | /* Ensure results do not depend on the host qsort for objects with | |
3412 | multiple mapping symbols at the same address by sorting on type | |
3413 | after vma. */ | |
3414 | return 1; | |
3415 | else if (amap->type < bmap->type) | |
3416 | return -1; | |
3417 | else | |
3418 | return 0; | |
3419 | } | |
3420 | ||
2144188d | 3421 | |
35fee8b7 MS |
3422 | static char * |
3423 | _bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes) | |
3424 | { | |
3425 | char *stub_name = (char *) bfd_malloc | |
3426 | (strlen ("__erratum_835769_veneer_") + 16); | |
3427 | sprintf (stub_name,"__erratum_835769_veneer_%d", num_fixes); | |
3428 | return stub_name; | |
3429 | } | |
3430 | ||
4106101c | 3431 | /* Scan for Cortex-A53 erratum 835769 sequence. |
2144188d MS |
3432 | |
3433 | Return TRUE else FALSE on abnormal termination. */ | |
3434 | ||
68fcca92 | 3435 | static bfd_boolean |
5421cc6e MS |
3436 | _bfd_aarch64_erratum_835769_scan (bfd *input_bfd, |
3437 | struct bfd_link_info *info, | |
3438 | unsigned int *num_fixes_p) | |
68fcca92 JW |
3439 | { |
3440 | asection *section; | |
3441 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
68fcca92 | 3442 | unsigned int num_fixes = *num_fixes_p; |
68fcca92 JW |
3443 | |
3444 | if (htab == NULL) | |
2144188d | 3445 | return TRUE; |
68fcca92 JW |
3446 | |
3447 | for (section = input_bfd->sections; | |
3448 | section != NULL; | |
3449 | section = section->next) | |
3450 | { | |
3451 | bfd_byte *contents = NULL; | |
3452 | struct _aarch64_elf_section_data *sec_data; | |
3453 | unsigned int span; | |
3454 | ||
3455 | if (elf_section_type (section) != SHT_PROGBITS | |
3456 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
3457 | || (section->flags & SEC_EXCLUDE) != 0 | |
3458 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
3459 | || (section->output_section == bfd_abs_section_ptr)) | |
3460 | continue; | |
3461 | ||
3462 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
3463 | contents = elf_section_data (section)->this_hdr.contents; | |
3464 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
2144188d | 3465 | return FALSE; |
68fcca92 JW |
3466 | |
3467 | sec_data = elf_aarch64_section_data (section); | |
520c7b56 JW |
3468 | |
3469 | qsort (sec_data->map, sec_data->mapcount, | |
3470 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
3471 | ||
68fcca92 JW |
3472 | for (span = 0; span < sec_data->mapcount; span++) |
3473 | { | |
3474 | unsigned int span_start = sec_data->map[span].vma; | |
3475 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
3476 | ? sec_data->map[0].vma + section->size | |
3477 | : sec_data->map[span + 1].vma); | |
3478 | unsigned int i; | |
3479 | char span_type = sec_data->map[span].type; | |
3480 | ||
3481 | if (span_type == 'd') | |
3482 | continue; | |
3483 | ||
3484 | for (i = span_start; i + 4 < span_end; i += 4) | |
3485 | { | |
3486 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
3487 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
3488 | ||
3489 | if (aarch64_erratum_sequence (insn_1, insn_2)) | |
3490 | { | |
5421cc6e | 3491 | struct elf_aarch64_stub_hash_entry *stub_entry; |
35fee8b7 MS |
3492 | char *stub_name = _bfd_aarch64_erratum_835769_stub_name (num_fixes); |
3493 | if (! stub_name) | |
2144188d | 3494 | return FALSE; |
68fcca92 | 3495 | |
5421cc6e MS |
3496 | stub_entry = _bfd_aarch64_add_stub_entry_in_group (stub_name, |
3497 | section, | |
3498 | htab); | |
3499 | if (! stub_entry) | |
3500 | return FALSE; | |
68fcca92 | 3501 | |
5421cc6e MS |
3502 | stub_entry->stub_type = aarch64_stub_erratum_835769_veneer; |
3503 | stub_entry->target_section = section; | |
3504 | stub_entry->target_value = i + 4; | |
3505 | stub_entry->veneered_insn = insn_2; | |
3506 | stub_entry->output_name = stub_name; | |
68fcca92 JW |
3507 | num_fixes++; |
3508 | } | |
3509 | } | |
3510 | } | |
3511 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
3512 | free (contents); | |
3513 | } | |
3514 | ||
357d1523 MS |
3515 | *num_fixes_p = num_fixes; |
3516 | ||
2144188d | 3517 | return TRUE; |
68fcca92 JW |
3518 | } |
3519 | ||
13f622ec | 3520 | |
4106101c MS |
3521 | /* Test if instruction INSN is ADRP. */ |
3522 | ||
3523 | static bfd_boolean | |
3524 | _bfd_aarch64_adrp_p (uint32_t insn) | |
3525 | { | |
3526 | return ((insn & 0x9f000000) == 0x90000000); | |
3527 | } | |
3528 | ||
3529 | ||
3530 | /* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */ | |
3531 | ||
3532 | static bfd_boolean | |
3533 | _bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1, uint32_t insn_2, | |
3534 | uint32_t insn_3) | |
3535 | { | |
3536 | uint32_t rt; | |
3537 | uint32_t rt2; | |
3538 | bfd_boolean pair; | |
3539 | bfd_boolean load; | |
3540 | ||
3541 | return (aarch64_mem_op_p (insn_2, &rt, &rt2, &pair, &load) | |
3542 | && (!pair | |
3543 | || (pair && !load)) | |
3544 | && AARCH64_LDST_UIMM (insn_3) | |
3545 | && AARCH64_RN (insn_3) == AARCH64_RD (insn_1)); | |
3546 | } | |
3547 | ||
3548 | ||
3549 | /* Test for the presence of Cortex-A53 erratum 843419 instruction sequence. | |
3550 | ||
3551 | Return TRUE if section CONTENTS at offset I contains one of the | |
3552 | erratum 843419 sequences, otherwise return FALSE. If a sequence is | |
3553 | seen set P_VENEER_I to the offset of the final LOAD/STORE | |
3554 | instruction in the sequence. | |
3555 | */ | |
3556 | ||
3557 | static bfd_boolean | |
3558 | _bfd_aarch64_erratum_843419_p (bfd_byte *contents, bfd_vma vma, | |
3559 | bfd_vma i, bfd_vma span_end, | |
3560 | bfd_vma *p_veneer_i) | |
3561 | { | |
3562 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
3563 | ||
3564 | if (!_bfd_aarch64_adrp_p (insn_1)) | |
3565 | return FALSE; | |
3566 | ||
3567 | if (span_end < i + 12) | |
3568 | return FALSE; | |
3569 | ||
3570 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
3571 | uint32_t insn_3 = bfd_getl32 (contents + i + 8); | |
3572 | ||
3573 | if ((vma & 0xfff) != 0xff8 && (vma & 0xfff) != 0xffc) | |
3574 | return FALSE; | |
3575 | ||
3576 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_3)) | |
3577 | { | |
3578 | *p_veneer_i = i + 8; | |
3579 | return TRUE; | |
3580 | } | |
3581 | ||
3582 | if (span_end < i + 16) | |
3583 | return FALSE; | |
3584 | ||
3585 | uint32_t insn_4 = bfd_getl32 (contents + i + 12); | |
3586 | ||
3587 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_4)) | |
3588 | { | |
3589 | *p_veneer_i = i + 12; | |
3590 | return TRUE; | |
3591 | } | |
3592 | ||
3593 | return FALSE; | |
3594 | } | |
3595 | ||
3596 | ||
13f622ec MS |
3597 | /* Resize all stub sections. */ |
3598 | ||
3599 | static void | |
3600 | _bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table *htab) | |
3601 | { | |
3602 | asection *section; | |
3603 | ||
3604 | /* OK, we've added some stubs. Find out the new size of the | |
3605 | stub sections. */ | |
3606 | for (section = htab->stub_bfd->sections; | |
3607 | section != NULL; section = section->next) | |
3608 | { | |
3609 | /* Ignore non-stub sections. */ | |
3610 | if (!strstr (section->name, STUB_SUFFIX)) | |
3611 | continue; | |
3612 | section->size = 0; | |
3613 | } | |
3614 | ||
3615 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab); | |
13f622ec | 3616 | |
61865519 MS |
3617 | for (section = htab->stub_bfd->sections; |
3618 | section != NULL; section = section->next) | |
3619 | { | |
3620 | if (!strstr (section->name, STUB_SUFFIX)) | |
3621 | continue; | |
3622 | ||
3623 | if (section->size) | |
3624 | section->size += 4; | |
4106101c MS |
3625 | |
3626 | /* Ensure all stub sections have a size which is a multiple of | |
3627 | 4096. This is important in order to ensure that the insertion | |
3628 | of stub sections does not in itself move existing code around | |
3629 | in such a way that new errata sequences are created. */ | |
3630 | if (htab->fix_erratum_843419) | |
3631 | if (section->size) | |
3632 | section->size = BFD_ALIGN (section->size, 0x1000); | |
3633 | } | |
3634 | } | |
3635 | ||
3636 | ||
3637 | /* Construct an erratum 843419 workaround stub name. | |
3638 | */ | |
3639 | ||
3640 | static char * | |
3641 | _bfd_aarch64_erratum_843419_stub_name (asection *input_section, | |
3642 | bfd_vma offset) | |
3643 | { | |
3644 | const bfd_size_type len = 8 + 4 + 1 + 8 + 1 + 16 + 1; | |
3645 | char *stub_name = bfd_malloc (len); | |
3646 | ||
3647 | if (stub_name != NULL) | |
3648 | snprintf (stub_name, len, "e843419@%04x_%08x_%" BFD_VMA_FMT "x", | |
3649 | input_section->owner->id, | |
3650 | input_section->id, | |
3651 | offset); | |
3652 | return stub_name; | |
3653 | } | |
3654 | ||
3655 | /* Build a stub_entry structure describing an 843419 fixup. | |
3656 | ||
3657 | The stub_entry constructed is populated with the bit pattern INSN | |
3658 | of the instruction located at OFFSET within input SECTION. | |
3659 | ||
3660 | Returns TRUE on success. */ | |
3661 | ||
3662 | static bfd_boolean | |
3663 | _bfd_aarch64_erratum_843419_fixup (uint32_t insn, | |
3664 | bfd_vma adrp_offset, | |
3665 | bfd_vma ldst_offset, | |
3666 | asection *section, | |
3667 | struct bfd_link_info *info) | |
3668 | { | |
3669 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
3670 | char *stub_name; | |
3671 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
3672 | ||
3673 | stub_name = _bfd_aarch64_erratum_843419_stub_name (section, ldst_offset); | |
3674 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
3675 | FALSE, FALSE); | |
3676 | if (stub_entry) | |
3677 | { | |
3678 | free (stub_name); | |
3679 | return TRUE; | |
3680 | } | |
3681 | ||
3682 | /* We always place an 843419 workaround veneer in the stub section | |
3683 | attached to the input section in which an erratum sequence has | |
3684 | been found. This ensures that later in the link process (in | |
3685 | elfNN_aarch64_write_section) when we copy the veneered | |
3686 | instruction from the input section into the stub section the | |
3687 | copied instruction will have had any relocations applied to it. | |
3688 | If we placed workaround veneers in any other stub section then we | |
3689 | could not assume that all relocations have been processed on the | |
3690 | corresponding input section at the point we output the stub | |
3691 | section. | |
3692 | */ | |
3693 | ||
3694 | stub_entry = _bfd_aarch64_add_stub_entry_after (stub_name, section, htab); | |
3695 | if (stub_entry == NULL) | |
3696 | { | |
3697 | free (stub_name); | |
3698 | return FALSE; | |
3699 | } | |
3700 | ||
3701 | stub_entry->adrp_offset = adrp_offset; | |
3702 | stub_entry->target_value = ldst_offset; | |
3703 | stub_entry->target_section = section; | |
3704 | stub_entry->stub_type = aarch64_stub_erratum_843419_veneer; | |
3705 | stub_entry->veneered_insn = insn; | |
3706 | stub_entry->output_name = stub_name; | |
3707 | ||
3708 | return TRUE; | |
3709 | } | |
3710 | ||
3711 | ||
3712 | /* Scan an input section looking for the signature of erratum 843419. | |
3713 | ||
3714 | Scans input SECTION in INPUT_BFD looking for erratum 843419 | |
3715 | signatures, for each signature found a stub_entry is created | |
3716 | describing the location of the erratum for subsequent fixup. | |
3717 | ||
3718 | Return TRUE on successful scan, FALSE on failure to scan. | |
3719 | */ | |
3720 | ||
3721 | static bfd_boolean | |
3722 | _bfd_aarch64_erratum_843419_scan (bfd *input_bfd, asection *section, | |
3723 | struct bfd_link_info *info) | |
3724 | { | |
3725 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
3726 | ||
3727 | if (htab == NULL) | |
3728 | return TRUE; | |
3729 | ||
3730 | if (elf_section_type (section) != SHT_PROGBITS | |
3731 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
3732 | || (section->flags & SEC_EXCLUDE) != 0 | |
3733 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
3734 | || (section->output_section == bfd_abs_section_ptr)) | |
3735 | return TRUE; | |
3736 | ||
3737 | do | |
3738 | { | |
3739 | bfd_byte *contents = NULL; | |
3740 | struct _aarch64_elf_section_data *sec_data; | |
3741 | unsigned int span; | |
3742 | ||
3743 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
3744 | contents = elf_section_data (section)->this_hdr.contents; | |
3745 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
3746 | return FALSE; | |
3747 | ||
3748 | sec_data = elf_aarch64_section_data (section); | |
3749 | ||
3750 | qsort (sec_data->map, sec_data->mapcount, | |
3751 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
3752 | ||
3753 | for (span = 0; span < sec_data->mapcount; span++) | |
3754 | { | |
3755 | unsigned int span_start = sec_data->map[span].vma; | |
3756 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
3757 | ? sec_data->map[0].vma + section->size | |
3758 | : sec_data->map[span + 1].vma); | |
3759 | unsigned int i; | |
3760 | char span_type = sec_data->map[span].type; | |
3761 | ||
3762 | if (span_type == 'd') | |
3763 | continue; | |
3764 | ||
3765 | for (i = span_start; i + 8 < span_end; i += 4) | |
3766 | { | |
3767 | bfd_vma vma = (section->output_section->vma | |
3768 | + section->output_offset | |
3769 | + i); | |
3770 | bfd_vma veneer_i; | |
3771 | ||
3772 | if (_bfd_aarch64_erratum_843419_p | |
3773 | (contents, vma, i, span_end, &veneer_i)) | |
3774 | { | |
3775 | uint32_t insn = bfd_getl32 (contents + veneer_i); | |
3776 | ||
3777 | if (!_bfd_aarch64_erratum_843419_fixup (insn, i, veneer_i, | |
3778 | section, info)) | |
3779 | return FALSE; | |
3780 | } | |
3781 | } | |
3782 | } | |
3783 | ||
3784 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
3785 | free (contents); | |
61865519 | 3786 | } |
4106101c MS |
3787 | while (0); |
3788 | ||
3789 | return TRUE; | |
61865519 | 3790 | } |
13f622ec | 3791 | |
4106101c | 3792 | |
a06ea964 NC |
3793 | /* Determine and set the size of the stub section for a final link. |
3794 | ||
3795 | The basic idea here is to examine all the relocations looking for | |
3796 | PC-relative calls to a target that is unreachable with a "bl" | |
3797 | instruction. */ | |
3798 | ||
3799 | bfd_boolean | |
cec5225b | 3800 | elfNN_aarch64_size_stubs (bfd *output_bfd, |
a06ea964 NC |
3801 | bfd *stub_bfd, |
3802 | struct bfd_link_info *info, | |
3803 | bfd_signed_vma group_size, | |
3804 | asection * (*add_stub_section) (const char *, | |
3805 | asection *), | |
3806 | void (*layout_sections_again) (void)) | |
3807 | { | |
3808 | bfd_size_type stub_group_size; | |
3809 | bfd_boolean stubs_always_before_branch; | |
5421cc6e | 3810 | bfd_boolean stub_changed = FALSE; |
cec5225b | 3811 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); |
68fcca92 | 3812 | unsigned int num_erratum_835769_fixes = 0; |
a06ea964 NC |
3813 | |
3814 | /* Propagate mach to stub bfd, because it may not have been | |
3815 | finalized when we created stub_bfd. */ | |
3816 | bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd), | |
3817 | bfd_get_mach (output_bfd)); | |
3818 | ||
3819 | /* Stash our params away. */ | |
3820 | htab->stub_bfd = stub_bfd; | |
3821 | htab->add_stub_section = add_stub_section; | |
3822 | htab->layout_sections_again = layout_sections_again; | |
3823 | stubs_always_before_branch = group_size < 0; | |
3824 | if (group_size < 0) | |
3825 | stub_group_size = -group_size; | |
3826 | else | |
3827 | stub_group_size = group_size; | |
3828 | ||
3829 | if (stub_group_size == 1) | |
3830 | { | |
3831 | /* Default values. */ | |
b9eead84 | 3832 | /* AArch64 branch range is +-128MB. The value used is 1MB less. */ |
a06ea964 NC |
3833 | stub_group_size = 127 * 1024 * 1024; |
3834 | } | |
3835 | ||
3836 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
3837 | ||
4106101c MS |
3838 | (*htab->layout_sections_again) (); |
3839 | ||
5421cc6e MS |
3840 | if (htab->fix_erratum_835769) |
3841 | { | |
3842 | bfd *input_bfd; | |
3843 | ||
3844 | for (input_bfd = info->input_bfds; | |
3845 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
3846 | if (!_bfd_aarch64_erratum_835769_scan (input_bfd, info, | |
3847 | &num_erratum_835769_fixes)) | |
3848 | return FALSE; | |
3849 | ||
4106101c MS |
3850 | _bfd_aarch64_resize_stubs (htab); |
3851 | (*htab->layout_sections_again) (); | |
3852 | } | |
3853 | ||
3854 | if (htab->fix_erratum_843419) | |
3855 | { | |
3856 | bfd *input_bfd; | |
3857 | ||
3858 | for (input_bfd = info->input_bfds; | |
3859 | input_bfd != NULL; | |
3860 | input_bfd = input_bfd->link.next) | |
3861 | { | |
3862 | asection *section; | |
3863 | ||
3864 | for (section = input_bfd->sections; | |
3865 | section != NULL; | |
3866 | section = section->next) | |
3867 | if (!_bfd_aarch64_erratum_843419_scan (input_bfd, section, info)) | |
3868 | return FALSE; | |
3869 | } | |
3870 | ||
3871 | _bfd_aarch64_resize_stubs (htab); | |
3872 | (*htab->layout_sections_again) (); | |
5421cc6e MS |
3873 | } |
3874 | ||
a06ea964 NC |
3875 | while (1) |
3876 | { | |
3877 | bfd *input_bfd; | |
a06ea964 | 3878 | |
9b9971aa MS |
3879 | for (input_bfd = info->input_bfds; |
3880 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
a06ea964 NC |
3881 | { |
3882 | Elf_Internal_Shdr *symtab_hdr; | |
3883 | asection *section; | |
3884 | Elf_Internal_Sym *local_syms = NULL; | |
3885 | ||
3886 | /* We'll need the symbol table in a second. */ | |
3887 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3888 | if (symtab_hdr->sh_info == 0) | |
3889 | continue; | |
3890 | ||
3891 | /* Walk over each section attached to the input bfd. */ | |
3892 | for (section = input_bfd->sections; | |
3893 | section != NULL; section = section->next) | |
3894 | { | |
3895 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
3896 | ||
3897 | /* If there aren't any relocs, then there's nothing more | |
3898 | to do. */ | |
3899 | if ((section->flags & SEC_RELOC) == 0 | |
3900 | || section->reloc_count == 0 | |
3901 | || (section->flags & SEC_CODE) == 0) | |
3902 | continue; | |
3903 | ||
3904 | /* If this section is a link-once section that will be | |
3905 | discarded, then don't create any stubs. */ | |
3906 | if (section->output_section == NULL | |
3907 | || section->output_section->owner != output_bfd) | |
3908 | continue; | |
3909 | ||
3910 | /* Get the relocs. */ | |
3911 | internal_relocs | |
3912 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, | |
3913 | NULL, info->keep_memory); | |
3914 | if (internal_relocs == NULL) | |
3915 | goto error_ret_free_local; | |
3916 | ||
3917 | /* Now examine each relocation. */ | |
3918 | irela = internal_relocs; | |
3919 | irelaend = irela + section->reloc_count; | |
3920 | for (; irela < irelaend; irela++) | |
3921 | { | |
3922 | unsigned int r_type, r_indx; | |
cec5225b YZ |
3923 | enum elf_aarch64_stub_type stub_type; |
3924 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
a06ea964 NC |
3925 | asection *sym_sec; |
3926 | bfd_vma sym_value; | |
3927 | bfd_vma destination; | |
cec5225b | 3928 | struct elf_aarch64_link_hash_entry *hash; |
a06ea964 NC |
3929 | const char *sym_name; |
3930 | char *stub_name; | |
3931 | const asection *id_sec; | |
3932 | unsigned char st_type; | |
3933 | bfd_size_type len; | |
3934 | ||
cec5225b YZ |
3935 | r_type = ELFNN_R_TYPE (irela->r_info); |
3936 | r_indx = ELFNN_R_SYM (irela->r_info); | |
a06ea964 NC |
3937 | |
3938 | if (r_type >= (unsigned int) R_AARCH64_end) | |
3939 | { | |
3940 | bfd_set_error (bfd_error_bad_value); | |
3941 | error_ret_free_internal: | |
3942 | if (elf_section_data (section)->relocs == NULL) | |
3943 | free (internal_relocs); | |
3944 | goto error_ret_free_local; | |
3945 | } | |
3946 | ||
3947 | /* Only look for stubs on unconditional branch and | |
3948 | branch and link instructions. */ | |
a6bb11b2 YZ |
3949 | if (r_type != (unsigned int) AARCH64_R (CALL26) |
3950 | && r_type != (unsigned int) AARCH64_R (JUMP26)) | |
a06ea964 NC |
3951 | continue; |
3952 | ||
3953 | /* Now determine the call target, its name, value, | |
3954 | section. */ | |
3955 | sym_sec = NULL; | |
3956 | sym_value = 0; | |
3957 | destination = 0; | |
3958 | hash = NULL; | |
3959 | sym_name = NULL; | |
3960 | if (r_indx < symtab_hdr->sh_info) | |
3961 | { | |
3962 | /* It's a local symbol. */ | |
3963 | Elf_Internal_Sym *sym; | |
3964 | Elf_Internal_Shdr *hdr; | |
3965 | ||
3966 | if (local_syms == NULL) | |
3967 | { | |
3968 | local_syms | |
3969 | = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3970 | if (local_syms == NULL) | |
3971 | local_syms | |
3972 | = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
3973 | symtab_hdr->sh_info, 0, | |
3974 | NULL, NULL, NULL); | |
3975 | if (local_syms == NULL) | |
3976 | goto error_ret_free_internal; | |
3977 | } | |
3978 | ||
3979 | sym = local_syms + r_indx; | |
3980 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
3981 | sym_sec = hdr->bfd_section; | |
3982 | if (!sym_sec) | |
3983 | /* This is an undefined symbol. It can never | |
3984 | be resolved. */ | |
3985 | continue; | |
3986 | ||
3987 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
3988 | sym_value = sym->st_value; | |
3989 | destination = (sym_value + irela->r_addend | |
3990 | + sym_sec->output_offset | |
3991 | + sym_sec->output_section->vma); | |
3992 | st_type = ELF_ST_TYPE (sym->st_info); | |
3993 | sym_name | |
3994 | = bfd_elf_string_from_elf_section (input_bfd, | |
3995 | symtab_hdr->sh_link, | |
3996 | sym->st_name); | |
3997 | } | |
3998 | else | |
3999 | { | |
4000 | int e_indx; | |
4001 | ||
4002 | e_indx = r_indx - symtab_hdr->sh_info; | |
cec5225b | 4003 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
4004 | elf_sym_hashes (input_bfd)[e_indx]); |
4005 | ||
4006 | while (hash->root.root.type == bfd_link_hash_indirect | |
4007 | || hash->root.root.type == bfd_link_hash_warning) | |
cec5225b | 4008 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
4009 | hash->root.root.u.i.link); |
4010 | ||
4011 | if (hash->root.root.type == bfd_link_hash_defined | |
4012 | || hash->root.root.type == bfd_link_hash_defweak) | |
4013 | { | |
cec5225b YZ |
4014 | struct elf_aarch64_link_hash_table *globals = |
4015 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
4016 | sym_sec = hash->root.root.u.def.section; |
4017 | sym_value = hash->root.root.u.def.value; | |
4018 | /* For a destination in a shared library, | |
4019 | use the PLT stub as target address to | |
4020 | decide whether a branch stub is | |
4021 | needed. */ | |
4022 | if (globals->root.splt != NULL && hash != NULL | |
4023 | && hash->root.plt.offset != (bfd_vma) - 1) | |
4024 | { | |
4025 | sym_sec = globals->root.splt; | |
4026 | sym_value = hash->root.plt.offset; | |
4027 | if (sym_sec->output_section != NULL) | |
4028 | destination = (sym_value | |
4029 | + sym_sec->output_offset | |
4030 | + | |
4031 | sym_sec->output_section->vma); | |
4032 | } | |
4033 | else if (sym_sec->output_section != NULL) | |
4034 | destination = (sym_value + irela->r_addend | |
4035 | + sym_sec->output_offset | |
4036 | + sym_sec->output_section->vma); | |
4037 | } | |
4038 | else if (hash->root.root.type == bfd_link_hash_undefined | |
4039 | || (hash->root.root.type | |
4040 | == bfd_link_hash_undefweak)) | |
4041 | { | |
4042 | /* For a shared library, use the PLT stub as | |
4043 | target address to decide whether a long | |
4044 | branch stub is needed. | |
4045 | For absolute code, they cannot be handled. */ | |
cec5225b YZ |
4046 | struct elf_aarch64_link_hash_table *globals = |
4047 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
4048 | |
4049 | if (globals->root.splt != NULL && hash != NULL | |
4050 | && hash->root.plt.offset != (bfd_vma) - 1) | |
4051 | { | |
4052 | sym_sec = globals->root.splt; | |
4053 | sym_value = hash->root.plt.offset; | |
4054 | if (sym_sec->output_section != NULL) | |
4055 | destination = (sym_value | |
4056 | + sym_sec->output_offset | |
4057 | + | |
4058 | sym_sec->output_section->vma); | |
4059 | } | |
4060 | else | |
4061 | continue; | |
4062 | } | |
4063 | else | |
4064 | { | |
4065 | bfd_set_error (bfd_error_bad_value); | |
4066 | goto error_ret_free_internal; | |
4067 | } | |
4068 | st_type = ELF_ST_TYPE (hash->root.type); | |
4069 | sym_name = hash->root.root.root.string; | |
4070 | } | |
4071 | ||
4072 | /* Determine what (if any) linker stub is needed. */ | |
4073 | stub_type = aarch64_type_of_stub | |
f678ded7 | 4074 | (info, section, irela, sym_sec, st_type, hash, destination); |
a06ea964 NC |
4075 | if (stub_type == aarch64_stub_none) |
4076 | continue; | |
4077 | ||
4078 | /* Support for grouping stub sections. */ | |
4079 | id_sec = htab->stub_group[section->id].link_sec; | |
4080 | ||
4081 | /* Get the name of this stub. */ | |
cec5225b | 4082 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, hash, |
a06ea964 NC |
4083 | irela); |
4084 | if (!stub_name) | |
4085 | goto error_ret_free_internal; | |
4086 | ||
4087 | stub_entry = | |
4088 | aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
4089 | stub_name, FALSE, FALSE); | |
4090 | if (stub_entry != NULL) | |
4091 | { | |
4092 | /* The proper stub has already been created. */ | |
4093 | free (stub_name); | |
4094 | continue; | |
4095 | } | |
4096 | ||
ef857521 MS |
4097 | stub_entry = _bfd_aarch64_add_stub_entry_in_group |
4098 | (stub_name, section, htab); | |
a06ea964 NC |
4099 | if (stub_entry == NULL) |
4100 | { | |
4101 | free (stub_name); | |
4102 | goto error_ret_free_internal; | |
4103 | } | |
4104 | ||
4105 | stub_entry->target_value = sym_value; | |
4106 | stub_entry->target_section = sym_sec; | |
4107 | stub_entry->stub_type = stub_type; | |
4108 | stub_entry->h = hash; | |
4109 | stub_entry->st_type = st_type; | |
4110 | ||
4111 | if (sym_name == NULL) | |
4112 | sym_name = "unnamed"; | |
4113 | len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name); | |
4114 | stub_entry->output_name = bfd_alloc (htab->stub_bfd, len); | |
4115 | if (stub_entry->output_name == NULL) | |
4116 | { | |
4117 | free (stub_name); | |
4118 | goto error_ret_free_internal; | |
4119 | } | |
4120 | ||
4121 | snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME, | |
4122 | sym_name); | |
4123 | ||
4124 | stub_changed = TRUE; | |
4125 | } | |
4126 | ||
4127 | /* We're done with the internal relocs, free them. */ | |
4128 | if (elf_section_data (section)->relocs == NULL) | |
4129 | free (internal_relocs); | |
4130 | } | |
4131 | } | |
4132 | ||
4133 | if (!stub_changed) | |
4134 | break; | |
4135 | ||
13f622ec | 4136 | _bfd_aarch64_resize_stubs (htab); |
a06ea964 NC |
4137 | |
4138 | /* Ask the linker to do its stuff. */ | |
4139 | (*htab->layout_sections_again) (); | |
4140 | stub_changed = FALSE; | |
4141 | } | |
4142 | ||
4143 | return TRUE; | |
4144 | ||
4145 | error_ret_free_local: | |
4146 | return FALSE; | |
4147 | } | |
4148 | ||
4149 | /* Build all the stubs associated with the current output file. The | |
4150 | stubs are kept in a hash table attached to the main linker hash | |
4151 | table. We also set up the .plt entries for statically linked PIC | |
4152 | functions here. This function is called via aarch64_elf_finish in the | |
4153 | linker. */ | |
4154 | ||
4155 | bfd_boolean | |
cec5225b | 4156 | elfNN_aarch64_build_stubs (struct bfd_link_info *info) |
a06ea964 NC |
4157 | { |
4158 | asection *stub_sec; | |
4159 | struct bfd_hash_table *table; | |
cec5225b | 4160 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 4161 | |
cec5225b | 4162 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
4163 | |
4164 | for (stub_sec = htab->stub_bfd->sections; | |
4165 | stub_sec != NULL; stub_sec = stub_sec->next) | |
4166 | { | |
4167 | bfd_size_type size; | |
4168 | ||
4169 | /* Ignore non-stub sections. */ | |
4170 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
4171 | continue; | |
4172 | ||
4173 | /* Allocate memory to hold the linker stubs. */ | |
4174 | size = stub_sec->size; | |
4175 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); | |
4176 | if (stub_sec->contents == NULL && size != 0) | |
4177 | return FALSE; | |
4178 | stub_sec->size = 0; | |
61865519 MS |
4179 | |
4180 | bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents); | |
4181 | stub_sec->size += 4; | |
a06ea964 NC |
4182 | } |
4183 | ||
4184 | /* Build the stubs as directed by the stub hash table. */ | |
4185 | table = &htab->stub_hash_table; | |
4186 | bfd_hash_traverse (table, aarch64_build_one_stub, info); | |
4187 | ||
4188 | return TRUE; | |
4189 | } | |
4190 | ||
4191 | ||
4192 | /* Add an entry to the code/data map for section SEC. */ | |
4193 | ||
4194 | static void | |
cec5225b | 4195 | elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma) |
a06ea964 NC |
4196 | { |
4197 | struct _aarch64_elf_section_data *sec_data = | |
cec5225b | 4198 | elf_aarch64_section_data (sec); |
a06ea964 NC |
4199 | unsigned int newidx; |
4200 | ||
4201 | if (sec_data->map == NULL) | |
4202 | { | |
cec5225b | 4203 | sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
4204 | sec_data->mapcount = 0; |
4205 | sec_data->mapsize = 1; | |
4206 | } | |
4207 | ||
4208 | newidx = sec_data->mapcount++; | |
4209 | ||
4210 | if (sec_data->mapcount > sec_data->mapsize) | |
4211 | { | |
4212 | sec_data->mapsize *= 2; | |
4213 | sec_data->map = bfd_realloc_or_free | |
cec5225b | 4214 | (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
4215 | } |
4216 | ||
4217 | if (sec_data->map) | |
4218 | { | |
4219 | sec_data->map[newidx].vma = vma; | |
4220 | sec_data->map[newidx].type = type; | |
4221 | } | |
4222 | } | |
4223 | ||
4224 | ||
4225 | /* Initialise maps of insn/data for input BFDs. */ | |
4226 | void | |
cec5225b | 4227 | bfd_elfNN_aarch64_init_maps (bfd *abfd) |
a06ea964 NC |
4228 | { |
4229 | Elf_Internal_Sym *isymbuf; | |
4230 | Elf_Internal_Shdr *hdr; | |
4231 | unsigned int i, localsyms; | |
4232 | ||
4233 | /* Make sure that we are dealing with an AArch64 elf binary. */ | |
4234 | if (!is_aarch64_elf (abfd)) | |
4235 | return; | |
4236 | ||
4237 | if ((abfd->flags & DYNAMIC) != 0) | |
68fcca92 | 4238 | return; |
a06ea964 NC |
4239 | |
4240 | hdr = &elf_symtab_hdr (abfd); | |
4241 | localsyms = hdr->sh_info; | |
4242 | ||
4243 | /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field | |
4244 | should contain the number of local symbols, which should come before any | |
4245 | global symbols. Mapping symbols are always local. */ | |
4246 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL); | |
4247 | ||
4248 | /* No internal symbols read? Skip this BFD. */ | |
4249 | if (isymbuf == NULL) | |
4250 | return; | |
4251 | ||
4252 | for (i = 0; i < localsyms; i++) | |
4253 | { | |
4254 | Elf_Internal_Sym *isym = &isymbuf[i]; | |
4255 | asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4256 | const char *name; | |
4257 | ||
4258 | if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL) | |
4259 | { | |
4260 | name = bfd_elf_string_from_elf_section (abfd, | |
4261 | hdr->sh_link, | |
4262 | isym->st_name); | |
4263 | ||
4264 | if (bfd_is_aarch64_special_symbol_name | |
4265 | (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP)) | |
cec5225b | 4266 | elfNN_aarch64_section_map_add (sec, name[1], isym->st_value); |
a06ea964 NC |
4267 | } |
4268 | } | |
4269 | } | |
4270 | ||
4271 | /* Set option values needed during linking. */ | |
4272 | void | |
cec5225b | 4273 | bfd_elfNN_aarch64_set_options (struct bfd *output_bfd, |
a06ea964 NC |
4274 | struct bfd_link_info *link_info, |
4275 | int no_enum_warn, | |
68fcca92 | 4276 | int no_wchar_warn, int pic_veneer, |
4106101c MS |
4277 | int fix_erratum_835769, |
4278 | int fix_erratum_843419) | |
a06ea964 | 4279 | { |
cec5225b | 4280 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 4281 | |
cec5225b | 4282 | globals = elf_aarch64_hash_table (link_info); |
a06ea964 | 4283 | globals->pic_veneer = pic_veneer; |
68fcca92 | 4284 | globals->fix_erratum_835769 = fix_erratum_835769; |
4106101c MS |
4285 | globals->fix_erratum_843419 = fix_erratum_843419; |
4286 | globals->fix_erratum_843419_adr = TRUE; | |
a06ea964 NC |
4287 | |
4288 | BFD_ASSERT (is_aarch64_elf (output_bfd)); | |
4289 | elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn; | |
4290 | elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn; | |
4291 | } | |
4292 | ||
a06ea964 NC |
4293 | static bfd_vma |
4294 | aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h, | |
cec5225b | 4295 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
4296 | *globals, struct bfd_link_info *info, |
4297 | bfd_vma value, bfd *output_bfd, | |
4298 | bfd_boolean *unresolved_reloc_p) | |
4299 | { | |
4300 | bfd_vma off = (bfd_vma) - 1; | |
4301 | asection *basegot = globals->root.sgot; | |
4302 | bfd_boolean dyn = globals->root.dynamic_sections_created; | |
4303 | ||
4304 | if (h != NULL) | |
4305 | { | |
a6bb11b2 | 4306 | BFD_ASSERT (basegot != NULL); |
a06ea964 NC |
4307 | off = h->got.offset; |
4308 | BFD_ASSERT (off != (bfd_vma) - 1); | |
0e1862bb L |
4309 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h) |
4310 | || (bfd_link_pic (info) | |
a06ea964 NC |
4311 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
4312 | || (ELF_ST_VISIBILITY (h->other) | |
4313 | && h->root.type == bfd_link_hash_undefweak)) | |
4314 | { | |
4315 | /* This is actually a static link, or it is a -Bsymbolic link | |
4316 | and the symbol is defined locally. We must initialize this | |
4317 | entry in the global offset table. Since the offset must | |
a6bb11b2 YZ |
4318 | always be a multiple of 8 (4 in the case of ILP32), we use |
4319 | the least significant bit to record whether we have | |
4320 | initialized it already. | |
a06ea964 NC |
4321 | When doing a dynamic link, we create a .rel(a).got relocation |
4322 | entry to initialize the value. This is done in the | |
4323 | finish_dynamic_symbol routine. */ | |
4324 | if ((off & 1) != 0) | |
4325 | off &= ~1; | |
4326 | else | |
4327 | { | |
cec5225b | 4328 | bfd_put_NN (output_bfd, value, basegot->contents + off); |
a06ea964 NC |
4329 | h->got.offset |= 1; |
4330 | } | |
4331 | } | |
4332 | else | |
4333 | *unresolved_reloc_p = FALSE; | |
4334 | ||
4335 | off = off + basegot->output_section->vma + basegot->output_offset; | |
4336 | } | |
4337 | ||
4338 | return off; | |
4339 | } | |
4340 | ||
4341 | /* Change R_TYPE to a more efficient access model where possible, | |
4342 | return the new reloc type. */ | |
4343 | ||
a6bb11b2 YZ |
4344 | static bfd_reloc_code_real_type |
4345 | aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type, | |
a06ea964 NC |
4346 | struct elf_link_hash_entry *h) |
4347 | { | |
4348 | bfd_boolean is_local = h == NULL; | |
a6bb11b2 | 4349 | |
a06ea964 NC |
4350 | switch (r_type) |
4351 | { | |
a6bb11b2 | 4352 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 4353 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a6bb11b2 YZ |
4354 | return (is_local |
4355 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4356 | : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21); | |
4357 | ||
389b8029 MS |
4358 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
4359 | return (is_local | |
4360 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4361 | : r_type); | |
4362 | ||
1ada945d MS |
4363 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
4364 | return (is_local | |
4365 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4366 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4367 | ||
a6bb11b2 | 4368 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
ce336788 | 4369 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 YZ |
4370 | return (is_local |
4371 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4372 | : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC); | |
4373 | ||
4374 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: | |
4375 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type; | |
4376 | ||
4377 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
4378 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type; | |
4379 | ||
043bf05a MS |
4380 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
4381 | return r_type; | |
4382 | ||
3c12b054 MS |
4383 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
4384 | return (is_local | |
4385 | ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 | |
4386 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4387 | ||
a6bb11b2 YZ |
4388 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
4389 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
a06ea964 | 4390 | /* Instructions with these relocations will become NOPs. */ |
a6bb11b2 YZ |
4391 | return BFD_RELOC_AARCH64_NONE; |
4392 | ||
4393 | default: | |
4394 | break; | |
a06ea964 NC |
4395 | } |
4396 | ||
4397 | return r_type; | |
4398 | } | |
4399 | ||
4400 | static unsigned int | |
a6bb11b2 | 4401 | aarch64_reloc_got_type (bfd_reloc_code_real_type r_type) |
a06ea964 NC |
4402 | { |
4403 | switch (r_type) | |
4404 | { | |
a6bb11b2 YZ |
4405 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
4406 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 4407 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 4408 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 4409 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 4410 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
a06ea964 NC |
4411 | return GOT_NORMAL; |
4412 | ||
ce336788 | 4413 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 4414 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 4415 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
73f925cc | 4416 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 4417 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 4418 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
4419 | return GOT_TLS_GD; |
4420 | ||
a6bb11b2 YZ |
4421 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
4422 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
389b8029 | 4423 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 4424 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a6bb11b2 | 4425 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
ce336788 | 4426 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: |
1ada945d | 4427 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
4428 | return GOT_TLSDESC_GD; |
4429 | ||
a6bb11b2 | 4430 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 4431 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 4432 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 4433 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
a06ea964 NC |
4434 | return GOT_TLS_IE; |
4435 | ||
a6bb11b2 YZ |
4436 | default: |
4437 | break; | |
a06ea964 NC |
4438 | } |
4439 | return GOT_UNKNOWN; | |
4440 | } | |
4441 | ||
4442 | static bfd_boolean | |
4443 | aarch64_can_relax_tls (bfd *input_bfd, | |
4444 | struct bfd_link_info *info, | |
a6bb11b2 | 4445 | bfd_reloc_code_real_type r_type, |
a06ea964 NC |
4446 | struct elf_link_hash_entry *h, |
4447 | unsigned long r_symndx) | |
4448 | { | |
4449 | unsigned int symbol_got_type; | |
4450 | unsigned int reloc_got_type; | |
4451 | ||
9331eea1 | 4452 | if (! IS_AARCH64_TLS_RELAX_RELOC (r_type)) |
a06ea964 NC |
4453 | return FALSE; |
4454 | ||
cec5225b | 4455 | symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx); |
a06ea964 NC |
4456 | reloc_got_type = aarch64_reloc_got_type (r_type); |
4457 | ||
4458 | if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type)) | |
4459 | return TRUE; | |
4460 | ||
0e1862bb | 4461 | if (bfd_link_pic (info)) |
a06ea964 NC |
4462 | return FALSE; |
4463 | ||
4464 | if (h && h->root.type == bfd_link_hash_undefweak) | |
4465 | return FALSE; | |
4466 | ||
4467 | return TRUE; | |
4468 | } | |
4469 | ||
a6bb11b2 YZ |
4470 | /* Given the relocation code R_TYPE, return the relaxed bfd reloc |
4471 | enumerator. */ | |
4472 | ||
4473 | static bfd_reloc_code_real_type | |
a06ea964 NC |
4474 | aarch64_tls_transition (bfd *input_bfd, |
4475 | struct bfd_link_info *info, | |
4476 | unsigned int r_type, | |
4477 | struct elf_link_hash_entry *h, | |
4478 | unsigned long r_symndx) | |
4479 | { | |
a6bb11b2 YZ |
4480 | bfd_reloc_code_real_type bfd_r_type |
4481 | = elfNN_aarch64_bfd_reloc_from_type (r_type); | |
a06ea964 | 4482 | |
a6bb11b2 YZ |
4483 | if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx)) |
4484 | return bfd_r_type; | |
4485 | ||
4486 | return aarch64_tls_transition_without_check (bfd_r_type, h); | |
a06ea964 NC |
4487 | } |
4488 | ||
4489 | /* Return the base VMA address which should be subtracted from real addresses | |
a6bb11b2 | 4490 | when resolving R_AARCH64_TLS_DTPREL relocation. */ |
a06ea964 NC |
4491 | |
4492 | static bfd_vma | |
4493 | dtpoff_base (struct bfd_link_info *info) | |
4494 | { | |
4495 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
4496 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); | |
4497 | return elf_hash_table (info)->tls_sec->vma; | |
4498 | } | |
4499 | ||
a06ea964 NC |
4500 | /* Return the base VMA address which should be subtracted from real addresses |
4501 | when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */ | |
4502 | ||
4503 | static bfd_vma | |
4504 | tpoff_base (struct bfd_link_info *info) | |
4505 | { | |
4506 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
4507 | ||
4508 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
ac21917f | 4509 | BFD_ASSERT (htab->tls_sec != NULL); |
a06ea964 NC |
4510 | |
4511 | bfd_vma base = align_power ((bfd_vma) TCB_SIZE, | |
4512 | htab->tls_sec->alignment_power); | |
4513 | return htab->tls_sec->vma - base; | |
4514 | } | |
4515 | ||
4516 | static bfd_vma * | |
4517 | symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4518 | unsigned long r_symndx) | |
4519 | { | |
4520 | /* Calculate the address of the GOT entry for symbol | |
4521 | referred to in h. */ | |
4522 | if (h != NULL) | |
4523 | return &h->got.offset; | |
4524 | else | |
4525 | { | |
4526 | /* local symbol */ | |
4527 | struct elf_aarch64_local_symbol *l; | |
4528 | ||
cec5225b | 4529 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
4530 | return &l[r_symndx].got_offset; |
4531 | } | |
4532 | } | |
4533 | ||
4534 | static void | |
4535 | symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4536 | unsigned long r_symndx) | |
4537 | { | |
4538 | bfd_vma *p; | |
4539 | p = symbol_got_offset_ref (input_bfd, h, r_symndx); | |
4540 | *p |= 1; | |
4541 | } | |
4542 | ||
4543 | static int | |
4544 | symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4545 | unsigned long r_symndx) | |
4546 | { | |
4547 | bfd_vma value; | |
4548 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
4549 | return value & 1; | |
4550 | } | |
4551 | ||
4552 | static bfd_vma | |
4553 | symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4554 | unsigned long r_symndx) | |
4555 | { | |
4556 | bfd_vma value; | |
4557 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
4558 | value &= ~1; | |
4559 | return value; | |
4560 | } | |
4561 | ||
4562 | static bfd_vma * | |
4563 | symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4564 | unsigned long r_symndx) | |
4565 | { | |
4566 | /* Calculate the address of the GOT entry for symbol | |
4567 | referred to in h. */ | |
4568 | if (h != NULL) | |
4569 | { | |
cec5225b YZ |
4570 | struct elf_aarch64_link_hash_entry *eh; |
4571 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
4572 | return &eh->tlsdesc_got_jump_table_offset; |
4573 | } | |
4574 | else | |
4575 | { | |
4576 | /* local symbol */ | |
4577 | struct elf_aarch64_local_symbol *l; | |
4578 | ||
cec5225b | 4579 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
4580 | return &l[r_symndx].tlsdesc_got_jump_table_offset; |
4581 | } | |
4582 | } | |
4583 | ||
4584 | static void | |
4585 | symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4586 | unsigned long r_symndx) | |
4587 | { | |
4588 | bfd_vma *p; | |
4589 | p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
4590 | *p |= 1; | |
4591 | } | |
4592 | ||
4593 | static int | |
4594 | symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd, | |
4595 | struct elf_link_hash_entry *h, | |
4596 | unsigned long r_symndx) | |
4597 | { | |
4598 | bfd_vma value; | |
4599 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
4600 | return value & 1; | |
4601 | } | |
4602 | ||
4603 | static bfd_vma | |
4604 | symbol_tlsdesc_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4605 | unsigned long r_symndx) | |
4606 | { | |
4607 | bfd_vma value; | |
4608 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
4609 | value &= ~1; | |
4610 | return value; | |
4611 | } | |
4612 | ||
68fcca92 JW |
4613 | /* Data for make_branch_to_erratum_835769_stub(). */ |
4614 | ||
4615 | struct erratum_835769_branch_to_stub_data | |
4616 | { | |
4106101c | 4617 | struct bfd_link_info *info; |
68fcca92 JW |
4618 | asection *output_section; |
4619 | bfd_byte *contents; | |
4620 | }; | |
4621 | ||
4622 | /* Helper to insert branches to erratum 835769 stubs in the right | |
4623 | places for a particular section. */ | |
4624 | ||
4625 | static bfd_boolean | |
4626 | make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry, | |
4627 | void *in_arg) | |
4628 | { | |
4629 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
4630 | struct erratum_835769_branch_to_stub_data *data; | |
4631 | bfd_byte *contents; | |
4632 | unsigned long branch_insn = 0; | |
4633 | bfd_vma veneered_insn_loc, veneer_entry_loc; | |
4634 | bfd_signed_vma branch_offset; | |
4635 | unsigned int target; | |
4636 | bfd *abfd; | |
4637 | ||
4638 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
4639 | data = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
4640 | ||
4641 | if (stub_entry->target_section != data->output_section | |
4642 | || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer) | |
4643 | return TRUE; | |
4644 | ||
4645 | contents = data->contents; | |
4646 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
4647 | + stub_entry->target_section->output_offset | |
4648 | + stub_entry->target_value; | |
4649 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
4650 | + stub_entry->stub_sec->output_offset | |
4651 | + stub_entry->stub_offset; | |
4652 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
4653 | ||
4654 | abfd = stub_entry->target_section->owner; | |
4655 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4656 | (*_bfd_error_handler) | |
4657 | (_("%B: error: Erratum 835769 stub out " | |
4658 | "of range (input file too large)"), abfd); | |
4659 | ||
4660 | target = stub_entry->target_value; | |
4661 | branch_insn = 0x14000000; | |
4662 | branch_offset >>= 2; | |
4663 | branch_offset &= 0x3ffffff; | |
4664 | branch_insn |= branch_offset; | |
4665 | bfd_putl32 (branch_insn, &contents[target]); | |
4666 | ||
4667 | return TRUE; | |
4668 | } | |
4669 | ||
4106101c MS |
4670 | |
4671 | static bfd_boolean | |
4672 | _bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry, | |
4673 | void *in_arg) | |
4674 | { | |
4675 | struct elf_aarch64_stub_hash_entry *stub_entry | |
4676 | = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
4677 | struct erratum_835769_branch_to_stub_data *data | |
4678 | = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
4679 | struct bfd_link_info *info; | |
4680 | struct elf_aarch64_link_hash_table *htab; | |
4681 | bfd_byte *contents; | |
4682 | asection *section; | |
4683 | bfd *abfd; | |
4684 | bfd_vma place; | |
4685 | uint32_t insn; | |
4686 | ||
4687 | info = data->info; | |
4688 | contents = data->contents; | |
4689 | section = data->output_section; | |
4690 | ||
4691 | htab = elf_aarch64_hash_table (info); | |
4692 | ||
4693 | if (stub_entry->target_section != section | |
4694 | || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer) | |
4695 | return TRUE; | |
4696 | ||
4697 | insn = bfd_getl32 (contents + stub_entry->target_value); | |
4698 | bfd_putl32 (insn, | |
4699 | stub_entry->stub_sec->contents + stub_entry->stub_offset); | |
4700 | ||
4701 | place = (section->output_section->vma + section->output_offset | |
4702 | + stub_entry->adrp_offset); | |
4703 | insn = bfd_getl32 (contents + stub_entry->adrp_offset); | |
4704 | ||
4705 | if ((insn & AARCH64_ADRP_OP_MASK) != AARCH64_ADRP_OP) | |
4706 | abort (); | |
4707 | ||
4708 | bfd_signed_vma imm = | |
4709 | (_bfd_aarch64_sign_extend | |
4710 | ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33) | |
4711 | - (place & 0xfff)); | |
4712 | ||
4713 | if (htab->fix_erratum_843419_adr | |
4714 | && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM)) | |
4715 | { | |
4716 | insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm) | |
4717 | | AARCH64_RT (insn)); | |
4718 | bfd_putl32 (insn, contents + stub_entry->adrp_offset); | |
4719 | } | |
4720 | else | |
4721 | { | |
4722 | bfd_vma veneered_insn_loc; | |
4723 | bfd_vma veneer_entry_loc; | |
4724 | bfd_signed_vma branch_offset; | |
4725 | uint32_t branch_insn; | |
4726 | ||
4727 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
4728 | + stub_entry->target_section->output_offset | |
4729 | + stub_entry->target_value; | |
4730 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
4731 | + stub_entry->stub_sec->output_offset | |
4732 | + stub_entry->stub_offset; | |
4733 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
4734 | ||
4735 | abfd = stub_entry->target_section->owner; | |
4736 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4737 | (*_bfd_error_handler) | |
4738 | (_("%B: error: Erratum 843419 stub out " | |
4739 | "of range (input file too large)"), abfd); | |
4740 | ||
4741 | branch_insn = 0x14000000; | |
4742 | branch_offset >>= 2; | |
4743 | branch_offset &= 0x3ffffff; | |
4744 | branch_insn |= branch_offset; | |
4745 | bfd_putl32 (branch_insn, contents + stub_entry->target_value); | |
4746 | } | |
4747 | return TRUE; | |
4748 | } | |
4749 | ||
4750 | ||
68fcca92 JW |
4751 | static bfd_boolean |
4752 | elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, | |
4753 | struct bfd_link_info *link_info, | |
4754 | asection *sec, | |
4755 | bfd_byte *contents) | |
4756 | ||
4757 | { | |
4758 | struct elf_aarch64_link_hash_table *globals = | |
f872121a | 4759 | elf_aarch64_hash_table (link_info); |
68fcca92 JW |
4760 | |
4761 | if (globals == NULL) | |
4762 | return FALSE; | |
4763 | ||
4764 | /* Fix code to point to erratum 835769 stubs. */ | |
4765 | if (globals->fix_erratum_835769) | |
4766 | { | |
4767 | struct erratum_835769_branch_to_stub_data data; | |
4768 | ||
4106101c | 4769 | data.info = link_info; |
68fcca92 JW |
4770 | data.output_section = sec; |
4771 | data.contents = contents; | |
4772 | bfd_hash_traverse (&globals->stub_hash_table, | |
4773 | make_branch_to_erratum_835769_stub, &data); | |
4774 | } | |
4775 | ||
4106101c MS |
4776 | if (globals->fix_erratum_843419) |
4777 | { | |
4778 | struct erratum_835769_branch_to_stub_data data; | |
4779 | ||
4780 | data.info = link_info; | |
4781 | data.output_section = sec; | |
4782 | data.contents = contents; | |
4783 | bfd_hash_traverse (&globals->stub_hash_table, | |
4784 | _bfd_aarch64_erratum_843419_branch_to_stub, &data); | |
4785 | } | |
4786 | ||
68fcca92 JW |
4787 | return FALSE; |
4788 | } | |
4789 | ||
a06ea964 NC |
4790 | /* Perform a relocation as part of a final link. */ |
4791 | static bfd_reloc_status_type | |
cec5225b | 4792 | elfNN_aarch64_final_link_relocate (reloc_howto_type *howto, |
a06ea964 NC |
4793 | bfd *input_bfd, |
4794 | bfd *output_bfd, | |
4795 | asection *input_section, | |
4796 | bfd_byte *contents, | |
4797 | Elf_Internal_Rela *rel, | |
4798 | bfd_vma value, | |
4799 | struct bfd_link_info *info, | |
4800 | asection *sym_sec, | |
4801 | struct elf_link_hash_entry *h, | |
4802 | bfd_boolean *unresolved_reloc_p, | |
4803 | bfd_boolean save_addend, | |
1419bbe5 WN |
4804 | bfd_vma *saved_addend, |
4805 | Elf_Internal_Sym *sym) | |
a06ea964 | 4806 | { |
1419bbe5 | 4807 | Elf_Internal_Shdr *symtab_hdr; |
a06ea964 | 4808 | unsigned int r_type = howto->type; |
a6bb11b2 YZ |
4809 | bfd_reloc_code_real_type bfd_r_type |
4810 | = elfNN_aarch64_bfd_reloc_from_howto (howto); | |
4811 | bfd_reloc_code_real_type new_bfd_r_type; | |
a06ea964 NC |
4812 | unsigned long r_symndx; |
4813 | bfd_byte *hit_data = contents + rel->r_offset; | |
b53b1bed | 4814 | bfd_vma place, off; |
a06ea964 | 4815 | bfd_signed_vma signed_addend; |
cec5225b | 4816 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 4817 | bfd_boolean weak_undef_p; |
b53b1bed | 4818 | asection *base_got; |
a06ea964 | 4819 | |
cec5225b | 4820 | globals = elf_aarch64_hash_table (info); |
a06ea964 | 4821 | |
1419bbe5 WN |
4822 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
4823 | ||
a06ea964 NC |
4824 | BFD_ASSERT (is_aarch64_elf (input_bfd)); |
4825 | ||
cec5225b | 4826 | r_symndx = ELFNN_R_SYM (rel->r_info); |
a06ea964 NC |
4827 | |
4828 | /* It is possible to have linker relaxations on some TLS access | |
4829 | models. Update our information here. */ | |
a6bb11b2 YZ |
4830 | new_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, h, r_symndx); |
4831 | if (new_bfd_r_type != bfd_r_type) | |
4832 | { | |
4833 | bfd_r_type = new_bfd_r_type; | |
4834 | howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type); | |
4835 | BFD_ASSERT (howto != NULL); | |
4836 | r_type = howto->type; | |
4837 | } | |
a06ea964 NC |
4838 | |
4839 | place = input_section->output_section->vma | |
4840 | + input_section->output_offset + rel->r_offset; | |
4841 | ||
4842 | /* Get addend, accumulating the addend for consecutive relocs | |
4843 | which refer to the same offset. */ | |
4844 | signed_addend = saved_addend ? *saved_addend : 0; | |
4845 | signed_addend += rel->r_addend; | |
4846 | ||
4847 | weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak | |
4848 | : bfd_is_und_section (sym_sec)); | |
a6bb11b2 | 4849 | |
1419bbe5 WN |
4850 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
4851 | it here if it is defined in a non-shared object. */ | |
4852 | if (h != NULL | |
4853 | && h->type == STT_GNU_IFUNC | |
4854 | && h->def_regular) | |
4855 | { | |
4856 | asection *plt; | |
4857 | const char *name; | |
99ad26cb | 4858 | bfd_vma addend = 0; |
1419bbe5 WN |
4859 | |
4860 | if ((input_section->flags & SEC_ALLOC) == 0 | |
4861 | || h->plt.offset == (bfd_vma) -1) | |
4862 | abort (); | |
4863 | ||
4864 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
4865 | plt = globals->root.splt ? globals->root.splt : globals->root.iplt; | |
4866 | value = (plt->output_section->vma + plt->output_offset + h->plt.offset); | |
4867 | ||
4868 | switch (bfd_r_type) | |
4869 | { | |
4870 | default: | |
4871 | if (h->root.root.string) | |
4872 | name = h->root.root.string; | |
4873 | else | |
4874 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
4875 | NULL); | |
4876 | (*_bfd_error_handler) | |
4877 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
4878 | "symbol `%s' isn't handled by %s"), input_bfd, | |
4879 | howto->name, name, __FUNCTION__); | |
4880 | bfd_set_error (bfd_error_bad_value); | |
4881 | return FALSE; | |
4882 | ||
4883 | case BFD_RELOC_AARCH64_NN: | |
4884 | if (rel->r_addend != 0) | |
4885 | { | |
4886 | if (h->root.root.string) | |
4887 | name = h->root.root.string; | |
4888 | else | |
4889 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
4890 | sym, NULL); | |
4891 | (*_bfd_error_handler) | |
4892 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
4893 | "symbol `%s' has non-zero addend: %d"), | |
4894 | input_bfd, howto->name, name, rel->r_addend); | |
4895 | bfd_set_error (bfd_error_bad_value); | |
4896 | return FALSE; | |
4897 | } | |
4898 | ||
4899 | /* Generate dynamic relocation only when there is a | |
4900 | non-GOT reference in a shared object. */ | |
0e1862bb | 4901 | if (bfd_link_pic (info) && h->non_got_ref) |
1419bbe5 WN |
4902 | { |
4903 | Elf_Internal_Rela outrel; | |
4904 | asection *sreloc; | |
4905 | ||
4906 | /* Need a dynamic relocation to get the real function | |
4907 | address. */ | |
4908 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
4909 | info, | |
4910 | input_section, | |
4911 | rel->r_offset); | |
4912 | if (outrel.r_offset == (bfd_vma) -1 | |
4913 | || outrel.r_offset == (bfd_vma) -2) | |
4914 | abort (); | |
4915 | ||
4916 | outrel.r_offset += (input_section->output_section->vma | |
4917 | + input_section->output_offset); | |
4918 | ||
4919 | if (h->dynindx == -1 | |
4920 | || h->forced_local | |
0e1862bb | 4921 | || bfd_link_executable (info)) |
1419bbe5 WN |
4922 | { |
4923 | /* This symbol is resolved locally. */ | |
4924 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
4925 | outrel.r_addend = (h->root.u.def.value | |
4926 | + h->root.u.def.section->output_section->vma | |
4927 | + h->root.u.def.section->output_offset); | |
4928 | } | |
4929 | else | |
4930 | { | |
4931 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); | |
4932 | outrel.r_addend = 0; | |
4933 | } | |
4934 | ||
4935 | sreloc = globals->root.irelifunc; | |
4936 | elf_append_rela (output_bfd, sreloc, &outrel); | |
4937 | ||
4938 | /* If this reloc is against an external symbol, we | |
4939 | do not want to fiddle with the addend. Otherwise, | |
4940 | we need to include the symbol value so that it | |
4941 | becomes an addend for the dynamic reloc. For an | |
4942 | internal symbol, we have updated addend. */ | |
4943 | return bfd_reloc_ok; | |
4944 | } | |
4945 | /* FALLTHROUGH */ | |
1419bbe5 | 4946 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 4947 | case BFD_RELOC_AARCH64_JUMP26: |
1419bbe5 WN |
4948 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
4949 | signed_addend, | |
4950 | weak_undef_p); | |
4951 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, | |
4952 | howto, value); | |
1419bbe5 WN |
4953 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
4954 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 4955 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 4956 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 4957 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 4958 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
1419bbe5 WN |
4959 | base_got = globals->root.sgot; |
4960 | off = h->got.offset; | |
4961 | ||
4962 | if (base_got == NULL) | |
4963 | abort (); | |
4964 | ||
4965 | if (off == (bfd_vma) -1) | |
4966 | { | |
4967 | bfd_vma plt_index; | |
4968 | ||
4969 | /* We can't use h->got.offset here to save state, or | |
4970 | even just remember the offset, as finish_dynamic_symbol | |
4971 | would use that as offset into .got. */ | |
4972 | ||
4973 | if (globals->root.splt != NULL) | |
4974 | { | |
b1ee0cc4 WN |
4975 | plt_index = ((h->plt.offset - globals->plt_header_size) / |
4976 | globals->plt_entry_size); | |
1419bbe5 WN |
4977 | off = (plt_index + 3) * GOT_ENTRY_SIZE; |
4978 | base_got = globals->root.sgotplt; | |
4979 | } | |
4980 | else | |
4981 | { | |
4982 | plt_index = h->plt.offset / globals->plt_entry_size; | |
4983 | off = plt_index * GOT_ENTRY_SIZE; | |
4984 | base_got = globals->root.igotplt; | |
4985 | } | |
4986 | ||
4987 | if (h->dynindx == -1 | |
4988 | || h->forced_local | |
4989 | || info->symbolic) | |
4990 | { | |
4991 | /* This references the local definition. We must | |
4992 | initialize this entry in the global offset table. | |
4993 | Since the offset must always be a multiple of 8, | |
4994 | we use the least significant bit to record | |
4995 | whether we have initialized it already. | |
4996 | ||
4997 | When doing a dynamic link, we create a .rela.got | |
4998 | relocation entry to initialize the value. This | |
4999 | is done in the finish_dynamic_symbol routine. */ | |
5000 | if ((off & 1) != 0) | |
5001 | off &= ~1; | |
5002 | else | |
5003 | { | |
5004 | bfd_put_NN (output_bfd, value, | |
5005 | base_got->contents + off); | |
5006 | /* Note that this is harmless as -1 | 1 still is -1. */ | |
5007 | h->got.offset |= 1; | |
5008 | } | |
5009 | } | |
5010 | value = (base_got->output_section->vma | |
5011 | + base_got->output_offset + off); | |
5012 | } | |
5013 | else | |
5014 | value = aarch64_calculate_got_entry_vma (h, globals, info, | |
5015 | value, output_bfd, | |
5016 | unresolved_reloc_p); | |
7018c030 JW |
5017 | if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
5018 | || bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
99ad26cb JW |
5019 | addend = (globals->root.sgot->output_section->vma |
5020 | + globals->root.sgot->output_offset); | |
1419bbe5 | 5021 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
99ad26cb | 5022 | addend, weak_undef_p); |
1419bbe5 | 5023 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value); |
1419bbe5 | 5024 | case BFD_RELOC_AARCH64_ADD_LO12: |
ce336788 | 5025 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: |
1419bbe5 WN |
5026 | break; |
5027 | } | |
5028 | } | |
5029 | ||
a6bb11b2 | 5030 | switch (bfd_r_type) |
a06ea964 | 5031 | { |
a6bb11b2 YZ |
5032 | case BFD_RELOC_AARCH64_NONE: |
5033 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
a06ea964 NC |
5034 | *unresolved_reloc_p = FALSE; |
5035 | return bfd_reloc_ok; | |
5036 | ||
a6bb11b2 | 5037 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
5038 | |
5039 | /* When generating a shared object or relocatable executable, these | |
5040 | relocations are copied into the output file to be resolved at | |
5041 | run time. */ | |
0e1862bb L |
5042 | if (((bfd_link_pic (info) == TRUE) |
5043 | || globals->root.is_relocatable_executable) | |
a06ea964 NC |
5044 | && (input_section->flags & SEC_ALLOC) |
5045 | && (h == NULL | |
5046 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5047 | || h->root.type != bfd_link_hash_undefweak)) | |
5048 | { | |
5049 | Elf_Internal_Rela outrel; | |
5050 | bfd_byte *loc; | |
5051 | bfd_boolean skip, relocate; | |
5052 | asection *sreloc; | |
5053 | ||
5054 | *unresolved_reloc_p = FALSE; | |
5055 | ||
a06ea964 NC |
5056 | skip = FALSE; |
5057 | relocate = FALSE; | |
5058 | ||
5059 | outrel.r_addend = signed_addend; | |
5060 | outrel.r_offset = | |
5061 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
5062 | rel->r_offset); | |
5063 | if (outrel.r_offset == (bfd_vma) - 1) | |
5064 | skip = TRUE; | |
5065 | else if (outrel.r_offset == (bfd_vma) - 2) | |
5066 | { | |
5067 | skip = TRUE; | |
5068 | relocate = TRUE; | |
5069 | } | |
5070 | ||
5071 | outrel.r_offset += (input_section->output_section->vma | |
5072 | + input_section->output_offset); | |
5073 | ||
5074 | if (skip) | |
5075 | memset (&outrel, 0, sizeof outrel); | |
5076 | else if (h != NULL | |
5077 | && h->dynindx != -1 | |
0e1862bb L |
5078 | && (!bfd_link_pic (info) |
5079 | || !SYMBOLIC_BIND (info, h) | |
5080 | || !h->def_regular)) | |
cec5225b | 5081 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); |
a06ea964 NC |
5082 | else |
5083 | { | |
5084 | int symbol; | |
5085 | ||
5086 | /* On SVR4-ish systems, the dynamic loader cannot | |
5087 | relocate the text and data segments independently, | |
5088 | so the symbol does not matter. */ | |
5089 | symbol = 0; | |
a6bb11b2 | 5090 | outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE)); |
a06ea964 NC |
5091 | outrel.r_addend += value; |
5092 | } | |
5093 | ||
1419bbe5 WN |
5094 | sreloc = elf_section_data (input_section)->sreloc; |
5095 | if (sreloc == NULL || sreloc->contents == NULL) | |
5096 | return bfd_reloc_notsupported; | |
5097 | ||
5098 | loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals); | |
cec5225b | 5099 | bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc); |
a06ea964 | 5100 | |
1419bbe5 | 5101 | if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size) |
a06ea964 NC |
5102 | { |
5103 | /* Sanity to check that we have previously allocated | |
5104 | sufficient space in the relocation section for the | |
5105 | number of relocations we actually want to emit. */ | |
5106 | abort (); | |
5107 | } | |
5108 | ||
5109 | /* If this reloc is against an external symbol, we do not want to | |
5110 | fiddle with the addend. Otherwise, we need to include the symbol | |
5111 | value so that it becomes an addend for the dynamic reloc. */ | |
5112 | if (!relocate) | |
5113 | return bfd_reloc_ok; | |
5114 | ||
5115 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5116 | contents, rel->r_offset, value, | |
5117 | signed_addend); | |
5118 | } | |
5119 | else | |
5120 | value += signed_addend; | |
5121 | break; | |
5122 | ||
a6bb11b2 | 5123 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 5124 | case BFD_RELOC_AARCH64_JUMP26: |
a06ea964 NC |
5125 | { |
5126 | asection *splt = globals->root.splt; | |
5127 | bfd_boolean via_plt_p = | |
5128 | splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1; | |
5129 | ||
5130 | /* A call to an undefined weak symbol is converted to a jump to | |
5131 | the next instruction unless a PLT entry will be created. | |
5132 | The jump to the next instruction is optimized as a NOP. | |
5133 | Do the same for local undefined symbols. */ | |
5134 | if (weak_undef_p && ! via_plt_p) | |
5135 | { | |
5136 | bfd_putl32 (INSN_NOP, hit_data); | |
5137 | return bfd_reloc_ok; | |
5138 | } | |
5139 | ||
5140 | /* If the call goes through a PLT entry, make sure to | |
5141 | check distance to the right destination address. */ | |
5142 | if (via_plt_p) | |
07f9ddfe JW |
5143 | value = (splt->output_section->vma |
5144 | + splt->output_offset + h->plt.offset); | |
5145 | ||
5146 | /* Check if a stub has to be inserted because the destination | |
5147 | is too far away. */ | |
5148 | struct elf_aarch64_stub_hash_entry *stub_entry = NULL; | |
5149 | if (! aarch64_valid_branch_p (value, place)) | |
5150 | /* The target is out of reach, so redirect the branch to | |
5151 | the local stub for this function. */ | |
5152 | stub_entry = elfNN_aarch64_get_stub_entry (input_section, sym_sec, h, | |
5153 | rel, globals); | |
5154 | if (stub_entry != NULL) | |
5155 | value = (stub_entry->stub_offset | |
5156 | + stub_entry->stub_sec->output_offset | |
5157 | + stub_entry->stub_sec->output_section->vma); | |
a06ea964 | 5158 | } |
caed7120 YZ |
5159 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5160 | signed_addend, weak_undef_p); | |
07f9ddfe | 5161 | *unresolved_reloc_p = FALSE; |
a06ea964 NC |
5162 | break; |
5163 | ||
dcbd20eb JW |
5164 | case BFD_RELOC_AARCH64_16_PCREL: |
5165 | case BFD_RELOC_AARCH64_32_PCREL: | |
5166 | case BFD_RELOC_AARCH64_64_PCREL: | |
ce336788 JW |
5167 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
5168 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
5169 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
5170 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
0e1862bb | 5171 | if (bfd_link_pic (info) |
dcbd20eb JW |
5172 | && (input_section->flags & SEC_ALLOC) != 0 |
5173 | && (input_section->flags & SEC_READONLY) != 0 | |
5174 | && h != NULL | |
5175 | && !h->def_regular) | |
5176 | { | |
5177 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
5178 | ||
5179 | (*_bfd_error_handler) | |
5180 | (_("%B: relocation %s against external symbol `%s' can not be used" | |
5181 | " when making a shared object; recompile with -fPIC"), | |
5182 | input_bfd, elfNN_aarch64_howto_table[howto_index].name, | |
5183 | h->root.root.string); | |
5184 | bfd_set_error (bfd_error_bad_value); | |
5185 | return FALSE; | |
5186 | } | |
5187 | ||
a6bb11b2 YZ |
5188 | case BFD_RELOC_AARCH64_16: |
5189 | #if ARCH_SIZE == 64 | |
5190 | case BFD_RELOC_AARCH64_32: | |
5191 | #endif | |
5192 | case BFD_RELOC_AARCH64_ADD_LO12: | |
a6bb11b2 | 5193 | case BFD_RELOC_AARCH64_BRANCH19: |
ce336788 | 5194 | case BFD_RELOC_AARCH64_LDST128_LO12: |
a6bb11b2 YZ |
5195 | case BFD_RELOC_AARCH64_LDST16_LO12: |
5196 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
5197 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
ce336788 | 5198 | case BFD_RELOC_AARCH64_LDST8_LO12: |
a6bb11b2 YZ |
5199 | case BFD_RELOC_AARCH64_MOVW_G0: |
5200 | case BFD_RELOC_AARCH64_MOVW_G0_NC: | |
ce336788 | 5201 | case BFD_RELOC_AARCH64_MOVW_G0_S: |
a6bb11b2 YZ |
5202 | case BFD_RELOC_AARCH64_MOVW_G1: |
5203 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
ce336788 | 5204 | case BFD_RELOC_AARCH64_MOVW_G1_S: |
a6bb11b2 YZ |
5205 | case BFD_RELOC_AARCH64_MOVW_G2: |
5206 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
ce336788 | 5207 | case BFD_RELOC_AARCH64_MOVW_G2_S: |
a6bb11b2 | 5208 | case BFD_RELOC_AARCH64_MOVW_G3: |
a6bb11b2 | 5209 | case BFD_RELOC_AARCH64_TSTBR14: |
caed7120 YZ |
5210 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5211 | signed_addend, weak_undef_p); | |
a06ea964 NC |
5212 | break; |
5213 | ||
a6bb11b2 YZ |
5214 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
5215 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 5216 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 5217 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 5218 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 5219 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
a06ea964 NC |
5220 | if (globals->root.sgot == NULL) |
5221 | BFD_ASSERT (h != NULL); | |
5222 | ||
5223 | if (h != NULL) | |
5224 | { | |
99ad26cb | 5225 | bfd_vma addend = 0; |
a06ea964 NC |
5226 | value = aarch64_calculate_got_entry_vma (h, globals, info, value, |
5227 | output_bfd, | |
5228 | unresolved_reloc_p); | |
7018c030 JW |
5229 | if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
5230 | || bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
99ad26cb JW |
5231 | addend = (globals->root.sgot->output_section->vma |
5232 | + globals->root.sgot->output_offset); | |
caed7120 | 5233 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
99ad26cb | 5234 | addend, weak_undef_p); |
a06ea964 | 5235 | } |
b53b1bed JW |
5236 | else |
5237 | { | |
99ad26cb | 5238 | bfd_vma addend = 0; |
b53b1bed JW |
5239 | struct elf_aarch64_local_symbol *locals |
5240 | = elf_aarch64_locals (input_bfd); | |
5241 | ||
5242 | if (locals == NULL) | |
5243 | { | |
5244 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
5245 | (*_bfd_error_handler) | |
5246 | (_("%B: Local symbol descriptor table be NULL when applying " | |
5247 | "relocation %s against local symbol"), | |
5248 | input_bfd, elfNN_aarch64_howto_table[howto_index].name); | |
5249 | abort (); | |
5250 | } | |
5251 | ||
5252 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
5253 | base_got = globals->root.sgot; | |
5254 | bfd_vma got_entry_addr = (base_got->output_section->vma | |
5255 | + base_got->output_offset + off); | |
5256 | ||
5257 | if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
5258 | { | |
5259 | bfd_put_64 (output_bfd, value, base_got->contents + off); | |
5260 | ||
0e1862bb | 5261 | if (bfd_link_pic (info)) |
b53b1bed JW |
5262 | { |
5263 | asection *s; | |
5264 | Elf_Internal_Rela outrel; | |
5265 | ||
5266 | /* For local symbol, we have done absolute relocation in static | |
5267 | linking stageh. While for share library, we need to update | |
5268 | the content of GOT entry according to the share objects | |
5269 | loading base address. So we need to generate a | |
5270 | R_AARCH64_RELATIVE reloc for dynamic linker. */ | |
5271 | s = globals->root.srelgot; | |
5272 | if (s == NULL) | |
5273 | abort (); | |
5274 | ||
5275 | outrel.r_offset = got_entry_addr; | |
5276 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); | |
5277 | outrel.r_addend = value; | |
5278 | elf_append_rela (output_bfd, s, &outrel); | |
5279 | } | |
5280 | ||
5281 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
5282 | } | |
5283 | ||
5284 | /* Update the relocation value to GOT entry addr as we have transformed | |
5285 | the direct data access into indirect data access through GOT. */ | |
5286 | value = got_entry_addr; | |
99ad26cb | 5287 | |
7018c030 JW |
5288 | if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
5289 | || bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
99ad26cb JW |
5290 | addend = base_got->output_section->vma + base_got->output_offset; |
5291 | ||
5292 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, | |
5293 | addend, weak_undef_p); | |
b53b1bed JW |
5294 | } |
5295 | ||
a06ea964 NC |
5296 | break; |
5297 | ||
ce336788 | 5298 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 5299 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 5300 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 5301 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 5302 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 5303 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 5304 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
73f925cc | 5305 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 5306 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 5307 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
5308 | if (globals->root.sgot == NULL) |
5309 | return bfd_reloc_notsupported; | |
5310 | ||
5311 | value = (symbol_got_offset (input_bfd, h, r_symndx) | |
5312 | + globals->root.sgot->output_section->vma | |
f44a1f8e | 5313 | + globals->root.sgot->output_offset); |
a06ea964 | 5314 | |
caed7120 YZ |
5315 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5316 | 0, weak_undef_p); | |
a06ea964 NC |
5317 | *unresolved_reloc_p = FALSE; |
5318 | break; | |
5319 | ||
6ffe9a1b | 5320 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12: |
40fbed84 | 5321 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12: |
753999c1 | 5322 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC: |
07c9aa07 JW |
5323 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12: |
5324 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC: | |
5325 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12: | |
5326 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC: | |
5327 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12: | |
5328 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC: | |
5329 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12: | |
5330 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC: | |
6ffe9a1b JW |
5331 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0: |
5332 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC: | |
5333 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1: | |
5334 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC: | |
5335 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2: | |
40fbed84 JW |
5336 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5337 | signed_addend - dtpoff_base (info), | |
5338 | weak_undef_p); | |
5339 | break; | |
5340 | ||
a6bb11b2 YZ |
5341 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
5342 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: | |
5343 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: | |
5344 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: | |
5345 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
5346 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: | |
5347 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
5348 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
caed7120 YZ |
5349 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5350 | signed_addend - tpoff_base (info), | |
5351 | weak_undef_p); | |
a06ea964 NC |
5352 | *unresolved_reloc_p = FALSE; |
5353 | break; | |
5354 | ||
7bcccb57 MS |
5355 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
5356 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: | |
a6bb11b2 | 5357 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 5358 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 5359 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
7bcccb57 | 5360 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: |
a6bb11b2 | 5361 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
1ada945d | 5362 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
5363 | if (globals->root.sgot == NULL) |
5364 | return bfd_reloc_notsupported; | |
a06ea964 NC |
5365 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) |
5366 | + globals->root.sgotplt->output_section->vma | |
f44a1f8e | 5367 | + globals->root.sgotplt->output_offset |
a06ea964 NC |
5368 | + globals->sgotplt_jump_table_size); |
5369 | ||
caed7120 YZ |
5370 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5371 | 0, weak_undef_p); | |
a06ea964 NC |
5372 | *unresolved_reloc_p = FALSE; |
5373 | break; | |
5374 | ||
5375 | default: | |
5376 | return bfd_reloc_notsupported; | |
5377 | } | |
5378 | ||
5379 | if (saved_addend) | |
5380 | *saved_addend = value; | |
5381 | ||
5382 | /* Only apply the final relocation in a sequence. */ | |
5383 | if (save_addend) | |
5384 | return bfd_reloc_continue; | |
5385 | ||
caed7120 YZ |
5386 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, |
5387 | howto, value); | |
a06ea964 NC |
5388 | } |
5389 | ||
5390 | /* Handle TLS relaxations. Relaxing is possible for symbols that use | |
5391 | R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static | |
5392 | link. | |
5393 | ||
5394 | Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller | |
5395 | is to then call final_link_relocate. Return other values in the | |
5396 | case of error. */ | |
5397 | ||
5398 | static bfd_reloc_status_type | |
cec5225b | 5399 | elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals, |
a06ea964 NC |
5400 | bfd *input_bfd, bfd_byte *contents, |
5401 | Elf_Internal_Rela *rel, struct elf_link_hash_entry *h) | |
5402 | { | |
5403 | bfd_boolean is_local = h == NULL; | |
cec5225b | 5404 | unsigned int r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
5405 | unsigned long insn; |
5406 | ||
5407 | BFD_ASSERT (globals && input_bfd && contents && rel); | |
5408 | ||
a6bb11b2 | 5409 | switch (elfNN_aarch64_bfd_reloc_from_type (r_type)) |
a06ea964 | 5410 | { |
a6bb11b2 | 5411 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 5412 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a06ea964 NC |
5413 | if (is_local) |
5414 | { | |
5415 | /* GD->LE relaxation: | |
5416 | adrp x0, :tlsgd:var => movz x0, :tprel_g1:var | |
5417 | or | |
5418 | adrp x0, :tlsdesc:var => movz x0, :tprel_g1:var | |
5419 | */ | |
5420 | bfd_putl32 (0xd2a00000, contents + rel->r_offset); | |
5421 | return bfd_reloc_continue; | |
5422 | } | |
5423 | else | |
5424 | { | |
5425 | /* GD->IE relaxation: | |
5426 | adrp x0, :tlsgd:var => adrp x0, :gottprel:var | |
5427 | or | |
5428 | adrp x0, :tlsdesc:var => adrp x0, :gottprel:var | |
5429 | */ | |
a06ea964 NC |
5430 | return bfd_reloc_continue; |
5431 | } | |
5432 | ||
389b8029 MS |
5433 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
5434 | BFD_ASSERT (0); | |
5435 | break; | |
5436 | ||
1ada945d MS |
5437 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
5438 | if (is_local) | |
5439 | { | |
5440 | /* Tiny TLSDESC->LE relaxation: | |
5441 | ldr x1, :tlsdesc:var => movz x0, #:tprel_g1:var | |
5442 | adr x0, :tlsdesc:var => movk x0, #:tprel_g0_nc:var | |
5443 | .tlsdesccall var | |
5444 | blr x1 => nop | |
5445 | */ | |
5446 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); | |
5447 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
5448 | ||
5449 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5450 | AARCH64_R (TLSLE_MOVW_TPREL_G0_NC)); | |
5451 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5452 | ||
5453 | bfd_putl32 (0xd2a00000, contents + rel->r_offset); | |
5454 | bfd_putl32 (0xf2800000, contents + rel->r_offset + 4); | |
5455 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); | |
5456 | return bfd_reloc_continue; | |
5457 | } | |
5458 | else | |
5459 | { | |
5460 | /* Tiny TLSDESC->IE relaxation: | |
5461 | ldr x1, :tlsdesc:var => ldr x0, :gottprel:var | |
5462 | adr x0, :tlsdesc:var => nop | |
5463 | .tlsdesccall var | |
5464 | blr x1 => nop | |
5465 | */ | |
5466 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); | |
5467 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
5468 | ||
5469 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5470 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5471 | ||
5472 | bfd_putl32 (0x58000000, contents + rel->r_offset); | |
5473 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4); | |
5474 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); | |
5475 | return bfd_reloc_continue; | |
5476 | } | |
5477 | ||
3c12b054 MS |
5478 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
5479 | if (is_local) | |
5480 | { | |
5481 | /* Tiny GD->LE relaxation: | |
5482 | adr x0, :tlsgd:var => mrs x1, tpidr_el0 | |
5483 | bl __tls_get_addr => add x0, x1, #:tprel_hi12:x, lsl #12 | |
5484 | nop => add x0, x0, #:tprel_lo12_nc:x | |
5485 | */ | |
5486 | ||
5487 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
5488 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
5489 | ||
5490 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0); | |
5491 | bfd_putl32 (0x91400020, contents + rel->r_offset + 4); | |
5492 | bfd_putl32 (0x91000000, contents + rel->r_offset + 8); | |
5493 | ||
5494 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5495 | AARCH64_R (TLSLE_ADD_TPREL_LO12_NC)); | |
5496 | rel[1].r_offset = rel->r_offset + 8; | |
5497 | ||
5498 | /* Move the current relocation to the second instruction in | |
5499 | the sequence. */ | |
5500 | rel->r_offset += 4; | |
5501 | rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5502 | AARCH64_R (TLSLE_ADD_TPREL_HI12)); | |
5503 | return bfd_reloc_continue; | |
5504 | } | |
5505 | else | |
5506 | { | |
5507 | /* Tiny GD->IE relaxation: | |
5508 | adr x0, :tlsgd:var => ldr x0, :gottprel:var | |
5509 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
5510 | nop => add x0, x0, x1 | |
5511 | */ | |
5512 | ||
5513 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
5514 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
5515 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5516 | ||
5517 | bfd_putl32 (0x58000000, contents + rel->r_offset); | |
5518 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); | |
5519 | bfd_putl32 (0x8b000020, contents + rel->r_offset + 8); | |
5520 | return bfd_reloc_continue; | |
5521 | } | |
5522 | ||
043bf05a MS |
5523 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
5524 | return bfd_reloc_continue; | |
5525 | ||
a6bb11b2 | 5526 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
a06ea964 NC |
5527 | if (is_local) |
5528 | { | |
5529 | /* GD->LE relaxation: | |
5530 | ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var | |
5531 | */ | |
5532 | bfd_putl32 (0xf2800000, contents + rel->r_offset); | |
5533 | return bfd_reloc_continue; | |
5534 | } | |
5535 | else | |
5536 | { | |
5537 | /* GD->IE relaxation: | |
5538 | ldr xd, [x0, #:tlsdesc_lo12:var] => ldr x0, [x0, #:gottprel_lo12:var] | |
5539 | */ | |
5540 | insn = bfd_getl32 (contents + rel->r_offset); | |
fa85fb9a | 5541 | insn &= 0xffffffe0; |
a06ea964 NC |
5542 | bfd_putl32 (insn, contents + rel->r_offset); |
5543 | return bfd_reloc_continue; | |
5544 | } | |
5545 | ||
a6bb11b2 | 5546 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a06ea964 NC |
5547 | if (is_local) |
5548 | { | |
5549 | /* GD->LE relaxation | |
5550 | add x0, #:tlsgd_lo12:var => movk x0, :tprel_g0_nc:var | |
5551 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
5552 | nop => add x0, x1, x0 | |
5553 | */ | |
5554 | ||
5555 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
5556 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
cec5225b | 5557 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 NC |
5558 | |
5559 | bfd_putl32 (0xf2800000, contents + rel->r_offset); | |
5560 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); | |
5561 | bfd_putl32 (0x8b000020, contents + rel->r_offset + 8); | |
5562 | return bfd_reloc_continue; | |
5563 | } | |
5564 | else | |
5565 | { | |
5566 | /* GD->IE relaxation | |
5567 | ADD x0, #:tlsgd_lo12:var => ldr x0, [x0, #:gottprel_lo12:var] | |
5568 | BL __tls_get_addr => mrs x1, tpidr_el0 | |
5569 | R_AARCH64_CALL26 | |
5570 | NOP => add x0, x1, x0 | |
5571 | */ | |
5572 | ||
a6bb11b2 | 5573 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); |
a06ea964 NC |
5574 | |
5575 | /* Remove the relocation on the BL instruction. */ | |
cec5225b | 5576 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 NC |
5577 | |
5578 | bfd_putl32 (0xf9400000, contents + rel->r_offset); | |
5579 | ||
5580 | /* We choose to fixup the BL and NOP instructions using the | |
5581 | offset from the second relocation to allow flexibility in | |
5582 | scheduling instructions between the ADD and BL. */ | |
5583 | bfd_putl32 (0xd53bd041, contents + rel[1].r_offset); | |
5584 | bfd_putl32 (0x8b000020, contents + rel[1].r_offset + 4); | |
5585 | return bfd_reloc_continue; | |
5586 | } | |
5587 | ||
a6bb11b2 YZ |
5588 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
5589 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
a06ea964 NC |
5590 | /* GD->IE/LE relaxation: |
5591 | add x0, x0, #:tlsdesc_lo12:var => nop | |
5592 | blr xd => nop | |
5593 | */ | |
5594 | bfd_putl32 (INSN_NOP, contents + rel->r_offset); | |
5595 | return bfd_reloc_ok; | |
5596 | ||
a6bb11b2 | 5597 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a06ea964 NC |
5598 | /* IE->LE relaxation: |
5599 | adrp xd, :gottprel:var => movz xd, :tprel_g1:var | |
5600 | */ | |
5601 | if (is_local) | |
5602 | { | |
5603 | insn = bfd_getl32 (contents + rel->r_offset); | |
5604 | bfd_putl32 (0xd2a00000 | (insn & 0x1f), contents + rel->r_offset); | |
5605 | } | |
5606 | return bfd_reloc_continue; | |
5607 | ||
a6bb11b2 | 5608 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: |
a06ea964 NC |
5609 | /* IE->LE relaxation: |
5610 | ldr xd, [xm, #:gottprel_lo12:var] => movk xd, :tprel_g0_nc:var | |
5611 | */ | |
5612 | if (is_local) | |
5613 | { | |
5614 | insn = bfd_getl32 (contents + rel->r_offset); | |
5615 | bfd_putl32 (0xf2800000 | (insn & 0x1f), contents + rel->r_offset); | |
5616 | } | |
5617 | return bfd_reloc_continue; | |
5618 | ||
5619 | default: | |
5620 | return bfd_reloc_continue; | |
5621 | } | |
5622 | ||
5623 | return bfd_reloc_ok; | |
5624 | } | |
5625 | ||
5626 | /* Relocate an AArch64 ELF section. */ | |
5627 | ||
5628 | static bfd_boolean | |
cec5225b | 5629 | elfNN_aarch64_relocate_section (bfd *output_bfd, |
a06ea964 NC |
5630 | struct bfd_link_info *info, |
5631 | bfd *input_bfd, | |
5632 | asection *input_section, | |
5633 | bfd_byte *contents, | |
5634 | Elf_Internal_Rela *relocs, | |
5635 | Elf_Internal_Sym *local_syms, | |
5636 | asection **local_sections) | |
5637 | { | |
5638 | Elf_Internal_Shdr *symtab_hdr; | |
5639 | struct elf_link_hash_entry **sym_hashes; | |
5640 | Elf_Internal_Rela *rel; | |
5641 | Elf_Internal_Rela *relend; | |
5642 | const char *name; | |
cec5225b | 5643 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 NC |
5644 | bfd_boolean save_addend = FALSE; |
5645 | bfd_vma addend = 0; | |
5646 | ||
cec5225b | 5647 | globals = elf_aarch64_hash_table (info); |
a06ea964 NC |
5648 | |
5649 | symtab_hdr = &elf_symtab_hdr (input_bfd); | |
5650 | sym_hashes = elf_sym_hashes (input_bfd); | |
5651 | ||
5652 | rel = relocs; | |
5653 | relend = relocs + input_section->reloc_count; | |
5654 | for (; rel < relend; rel++) | |
5655 | { | |
5656 | unsigned int r_type; | |
a6bb11b2 YZ |
5657 | bfd_reloc_code_real_type bfd_r_type; |
5658 | bfd_reloc_code_real_type relaxed_bfd_r_type; | |
a06ea964 NC |
5659 | reloc_howto_type *howto; |
5660 | unsigned long r_symndx; | |
5661 | Elf_Internal_Sym *sym; | |
5662 | asection *sec; | |
5663 | struct elf_link_hash_entry *h; | |
5664 | bfd_vma relocation; | |
5665 | bfd_reloc_status_type r; | |
5666 | arelent bfd_reloc; | |
5667 | char sym_type; | |
5668 | bfd_boolean unresolved_reloc = FALSE; | |
5669 | char *error_message = NULL; | |
5670 | ||
cec5225b YZ |
5671 | r_symndx = ELFNN_R_SYM (rel->r_info); |
5672 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 | 5673 | |
cec5225b | 5674 | bfd_reloc.howto = elfNN_aarch64_howto_from_type (r_type); |
a06ea964 NC |
5675 | howto = bfd_reloc.howto; |
5676 | ||
7fcfd62d NC |
5677 | if (howto == NULL) |
5678 | { | |
5679 | (*_bfd_error_handler) | |
5680 | (_("%B: unrecognized relocation (0x%x) in section `%A'"), | |
5681 | input_bfd, input_section, r_type); | |
5682 | return FALSE; | |
5683 | } | |
a6bb11b2 | 5684 | bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto); |
7fcfd62d | 5685 | |
a06ea964 NC |
5686 | h = NULL; |
5687 | sym = NULL; | |
5688 | sec = NULL; | |
5689 | ||
5690 | if (r_symndx < symtab_hdr->sh_info) | |
5691 | { | |
5692 | sym = local_syms + r_symndx; | |
cec5225b | 5693 | sym_type = ELFNN_ST_TYPE (sym->st_info); |
a06ea964 NC |
5694 | sec = local_sections[r_symndx]; |
5695 | ||
5696 | /* An object file might have a reference to a local | |
5697 | undefined symbol. This is a daft object file, but we | |
5698 | should at least do something about it. */ | |
5699 | if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL | |
5700 | && bfd_is_und_section (sec) | |
5701 | && ELF_ST_BIND (sym->st_info) != STB_WEAK) | |
5702 | { | |
5703 | if (!info->callbacks->undefined_symbol | |
5704 | (info, bfd_elf_string_from_elf_section | |
5705 | (input_bfd, symtab_hdr->sh_link, sym->st_name), | |
5706 | input_bfd, input_section, rel->r_offset, TRUE)) | |
5707 | return FALSE; | |
5708 | } | |
5709 | ||
a06ea964 | 5710 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
1419bbe5 WN |
5711 | |
5712 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
0e1862bb | 5713 | if (!bfd_link_relocatable (info) |
1419bbe5 WN |
5714 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
5715 | { | |
5716 | h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd, | |
5717 | rel, FALSE); | |
5718 | if (h == NULL) | |
5719 | abort (); | |
5720 | ||
5721 | /* Set STT_GNU_IFUNC symbol value. */ | |
5722 | h->root.u.def.value = sym->st_value; | |
5723 | h->root.u.def.section = sec; | |
5724 | } | |
a06ea964 NC |
5725 | } |
5726 | else | |
5727 | { | |
62d887d4 | 5728 | bfd_boolean warned, ignored; |
a06ea964 NC |
5729 | |
5730 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
5731 | r_symndx, symtab_hdr, sym_hashes, | |
5732 | h, sec, relocation, | |
62d887d4 | 5733 | unresolved_reloc, warned, ignored); |
a06ea964 NC |
5734 | |
5735 | sym_type = h->type; | |
5736 | } | |
5737 | ||
5738 | if (sec != NULL && discarded_section (sec)) | |
5739 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
5740 | rel, 1, relend, howto, 0, contents); | |
5741 | ||
0e1862bb | 5742 | if (bfd_link_relocatable (info)) |
2e0488d3 | 5743 | continue; |
a06ea964 NC |
5744 | |
5745 | if (h != NULL) | |
5746 | name = h->root.root.string; | |
5747 | else | |
5748 | { | |
5749 | name = (bfd_elf_string_from_elf_section | |
5750 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
5751 | if (name == NULL || *name == '\0') | |
5752 | name = bfd_section_name (input_bfd, sec); | |
5753 | } | |
5754 | ||
5755 | if (r_symndx != 0 | |
5756 | && r_type != R_AARCH64_NONE | |
5757 | && r_type != R_AARCH64_NULL | |
5758 | && (h == NULL | |
5759 | || h->root.type == bfd_link_hash_defined | |
5760 | || h->root.type == bfd_link_hash_defweak) | |
a6bb11b2 | 5761 | && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS)) |
a06ea964 NC |
5762 | { |
5763 | (*_bfd_error_handler) | |
5764 | ((sym_type == STT_TLS | |
5765 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") | |
5766 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")), | |
5767 | input_bfd, | |
5768 | input_section, (long) rel->r_offset, howto->name, name); | |
5769 | } | |
5770 | ||
a06ea964 NC |
5771 | /* We relax only if we can see that there can be a valid transition |
5772 | from a reloc type to another. | |
cec5225b | 5773 | We call elfNN_aarch64_final_link_relocate unless we're completely |
a06ea964 NC |
5774 | done, i.e., the relaxation produced the final output we want. */ |
5775 | ||
a6bb11b2 YZ |
5776 | relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, |
5777 | h, r_symndx); | |
5778 | if (relaxed_bfd_r_type != bfd_r_type) | |
a06ea964 | 5779 | { |
a6bb11b2 YZ |
5780 | bfd_r_type = relaxed_bfd_r_type; |
5781 | howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type); | |
5782 | BFD_ASSERT (howto != NULL); | |
5783 | r_type = howto->type; | |
cec5225b | 5784 | r = elfNN_aarch64_tls_relax (globals, input_bfd, contents, rel, h); |
a06ea964 NC |
5785 | unresolved_reloc = 0; |
5786 | } | |
5787 | else | |
5788 | r = bfd_reloc_continue; | |
5789 | ||
5790 | /* There may be multiple consecutive relocations for the | |
5791 | same offset. In that case we are supposed to treat the | |
5792 | output of each relocation as the addend for the next. */ | |
5793 | if (rel + 1 < relend | |
5794 | && rel->r_offset == rel[1].r_offset | |
cec5225b YZ |
5795 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE |
5796 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL) | |
a06ea964 NC |
5797 | save_addend = TRUE; |
5798 | else | |
5799 | save_addend = FALSE; | |
5800 | ||
5801 | if (r == bfd_reloc_continue) | |
cec5225b | 5802 | r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd, |
a06ea964 NC |
5803 | input_section, contents, rel, |
5804 | relocation, info, sec, | |
5805 | h, &unresolved_reloc, | |
1419bbe5 | 5806 | save_addend, &addend, sym); |
a06ea964 | 5807 | |
a6bb11b2 | 5808 | switch (elfNN_aarch64_bfd_reloc_from_type (r_type)) |
a06ea964 | 5809 | { |
ce336788 | 5810 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 5811 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 5812 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
73f925cc | 5813 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 5814 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 5815 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
5816 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
5817 | { | |
5818 | bfd_boolean need_relocs = FALSE; | |
5819 | bfd_byte *loc; | |
5820 | int indx; | |
5821 | bfd_vma off; | |
5822 | ||
5823 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
5824 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
5825 | ||
5826 | need_relocs = | |
0e1862bb | 5827 | (bfd_link_pic (info) || indx != 0) && |
a06ea964 NC |
5828 | (h == NULL |
5829 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5830 | || h->root.type != bfd_link_hash_undefweak); | |
5831 | ||
5832 | BFD_ASSERT (globals->root.srelgot != NULL); | |
5833 | ||
5834 | if (need_relocs) | |
5835 | { | |
5836 | Elf_Internal_Rela rela; | |
a6bb11b2 | 5837 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD)); |
a06ea964 NC |
5838 | rela.r_addend = 0; |
5839 | rela.r_offset = globals->root.sgot->output_section->vma + | |
5840 | globals->root.sgot->output_offset + off; | |
5841 | ||
5842 | ||
5843 | loc = globals->root.srelgot->contents; | |
5844 | loc += globals->root.srelgot->reloc_count++ | |
5845 | * RELOC_SIZE (htab); | |
cec5225b | 5846 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 5847 | |
f69e4920 JW |
5848 | bfd_reloc_code_real_type real_type = |
5849 | elfNN_aarch64_bfd_reloc_from_type (r_type); | |
5850 | ||
5851 | if (real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 | |
73f925cc JW |
5852 | || real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 |
5853 | || real_type == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC) | |
77a69ff8 JW |
5854 | { |
5855 | /* For local dynamic, don't generate DTPREL in any case. | |
5856 | Initialize the DTPREL slot into zero, so we get module | |
5857 | base address when invoke runtime TLS resolver. */ | |
5858 | bfd_put_NN (output_bfd, 0, | |
5859 | globals->root.sgot->contents + off | |
5860 | + GOT_ENTRY_SIZE); | |
5861 | } | |
5862 | else if (indx == 0) | |
a06ea964 | 5863 | { |
cec5225b | 5864 | bfd_put_NN (output_bfd, |
a06ea964 NC |
5865 | relocation - dtpoff_base (info), |
5866 | globals->root.sgot->contents + off | |
5867 | + GOT_ENTRY_SIZE); | |
5868 | } | |
5869 | else | |
5870 | { | |
5871 | /* This TLS symbol is global. We emit a | |
5872 | relocation to fixup the tls offset at load | |
5873 | time. */ | |
5874 | rela.r_info = | |
a6bb11b2 | 5875 | ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL)); |
a06ea964 NC |
5876 | rela.r_addend = 0; |
5877 | rela.r_offset = | |
5878 | (globals->root.sgot->output_section->vma | |
5879 | + globals->root.sgot->output_offset + off | |
5880 | + GOT_ENTRY_SIZE); | |
5881 | ||
5882 | loc = globals->root.srelgot->contents; | |
5883 | loc += globals->root.srelgot->reloc_count++ | |
5884 | * RELOC_SIZE (globals); | |
cec5225b YZ |
5885 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
5886 | bfd_put_NN (output_bfd, (bfd_vma) 0, | |
a06ea964 NC |
5887 | globals->root.sgot->contents + off |
5888 | + GOT_ENTRY_SIZE); | |
5889 | } | |
5890 | } | |
5891 | else | |
5892 | { | |
cec5225b | 5893 | bfd_put_NN (output_bfd, (bfd_vma) 1, |
a06ea964 | 5894 | globals->root.sgot->contents + off); |
cec5225b | 5895 | bfd_put_NN (output_bfd, |
a06ea964 NC |
5896 | relocation - dtpoff_base (info), |
5897 | globals->root.sgot->contents + off | |
5898 | + GOT_ENTRY_SIZE); | |
5899 | } | |
5900 | ||
5901 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
5902 | } | |
5903 | break; | |
5904 | ||
a6bb11b2 YZ |
5905 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
5906 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
043bf05a | 5907 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
a06ea964 NC |
5908 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
5909 | { | |
5910 | bfd_boolean need_relocs = FALSE; | |
5911 | bfd_byte *loc; | |
5912 | int indx; | |
5913 | bfd_vma off; | |
5914 | ||
5915 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
5916 | ||
5917 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
5918 | ||
5919 | need_relocs = | |
0e1862bb | 5920 | (bfd_link_pic (info) || indx != 0) && |
a06ea964 NC |
5921 | (h == NULL |
5922 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5923 | || h->root.type != bfd_link_hash_undefweak); | |
5924 | ||
5925 | BFD_ASSERT (globals->root.srelgot != NULL); | |
5926 | ||
5927 | if (need_relocs) | |
5928 | { | |
5929 | Elf_Internal_Rela rela; | |
5930 | ||
5931 | if (indx == 0) | |
5932 | rela.r_addend = relocation - dtpoff_base (info); | |
5933 | else | |
5934 | rela.r_addend = 0; | |
5935 | ||
a6bb11b2 | 5936 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL)); |
a06ea964 NC |
5937 | rela.r_offset = globals->root.sgot->output_section->vma + |
5938 | globals->root.sgot->output_offset + off; | |
5939 | ||
5940 | loc = globals->root.srelgot->contents; | |
5941 | loc += globals->root.srelgot->reloc_count++ | |
5942 | * RELOC_SIZE (htab); | |
5943 | ||
cec5225b | 5944 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 5945 | |
cec5225b | 5946 | bfd_put_NN (output_bfd, rela.r_addend, |
a06ea964 NC |
5947 | globals->root.sgot->contents + off); |
5948 | } | |
5949 | else | |
cec5225b | 5950 | bfd_put_NN (output_bfd, relocation - tpoff_base (info), |
a06ea964 NC |
5951 | globals->root.sgot->contents + off); |
5952 | ||
5953 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
5954 | } | |
5955 | break; | |
5956 | ||
7bcccb57 | 5957 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
a6bb11b2 | 5958 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 5959 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 5960 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
1ada945d | 5961 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
5962 | if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx)) |
5963 | { | |
5964 | bfd_boolean need_relocs = FALSE; | |
5965 | int indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
5966 | bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx); | |
5967 | ||
5968 | need_relocs = (h == NULL | |
5969 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5970 | || h->root.type != bfd_link_hash_undefweak); | |
5971 | ||
5972 | BFD_ASSERT (globals->root.srelgot != NULL); | |
5973 | BFD_ASSERT (globals->root.sgot != NULL); | |
5974 | ||
5975 | if (need_relocs) | |
5976 | { | |
5977 | bfd_byte *loc; | |
5978 | Elf_Internal_Rela rela; | |
a6bb11b2 YZ |
5979 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC)); |
5980 | ||
a06ea964 NC |
5981 | rela.r_addend = 0; |
5982 | rela.r_offset = (globals->root.sgotplt->output_section->vma | |
5983 | + globals->root.sgotplt->output_offset | |
5984 | + off + globals->sgotplt_jump_table_size); | |
5985 | ||
5986 | if (indx == 0) | |
5987 | rela.r_addend = relocation - dtpoff_base (info); | |
5988 | ||
5989 | /* Allocate the next available slot in the PLT reloc | |
5990 | section to hold our R_AARCH64_TLSDESC, the next | |
5991 | available slot is determined from reloc_count, | |
5992 | which we step. But note, reloc_count was | |
5993 | artifically moved down while allocating slots for | |
5994 | real PLT relocs such that all of the PLT relocs | |
5995 | will fit above the initial reloc_count and the | |
5996 | extra stuff will fit below. */ | |
5997 | loc = globals->root.srelplt->contents; | |
5998 | loc += globals->root.srelplt->reloc_count++ | |
5999 | * RELOC_SIZE (globals); | |
6000 | ||
cec5225b | 6001 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 6002 | |
cec5225b | 6003 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
6004 | globals->root.sgotplt->contents + off + |
6005 | globals->sgotplt_jump_table_size); | |
cec5225b | 6006 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
6007 | globals->root.sgotplt->contents + off + |
6008 | globals->sgotplt_jump_table_size + | |
6009 | GOT_ENTRY_SIZE); | |
6010 | } | |
6011 | ||
6012 | symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx); | |
6013 | } | |
6014 | break; | |
a6bb11b2 YZ |
6015 | default: |
6016 | break; | |
a06ea964 NC |
6017 | } |
6018 | ||
6019 | if (!save_addend) | |
6020 | addend = 0; | |
6021 | ||
6022 | ||
6023 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections | |
6024 | because such sections are not SEC_ALLOC and thus ld.so will | |
6025 | not process them. */ | |
6026 | if (unresolved_reloc | |
6027 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
6028 | && h->def_dynamic) | |
6029 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
6030 | +rel->r_offset) != (bfd_vma) - 1) | |
6031 | { | |
6032 | (*_bfd_error_handler) | |
6033 | (_ | |
6034 | ("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), | |
6035 | input_bfd, input_section, (long) rel->r_offset, howto->name, | |
6036 | h->root.root.string); | |
6037 | return FALSE; | |
6038 | } | |
6039 | ||
6040 | if (r != bfd_reloc_ok && r != bfd_reloc_continue) | |
6041 | { | |
c674f5cd JW |
6042 | bfd_reloc_code_real_type real_r_type |
6043 | = elfNN_aarch64_bfd_reloc_from_type (r_type); | |
6044 | ||
a06ea964 NC |
6045 | switch (r) |
6046 | { | |
6047 | case bfd_reloc_overflow: | |
fdc3b1b1 JW |
6048 | if (!(*info->callbacks->reloc_overflow) |
6049 | (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, | |
6050 | input_bfd, input_section, rel->r_offset)) | |
a06ea964 | 6051 | return FALSE; |
c674f5cd JW |
6052 | if (real_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
6053 | || real_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
6054 | { | |
6055 | (*info->callbacks->warning) | |
6056 | (info, | |
6057 | _("Too many GOT entries for -fpic, " | |
6058 | "please recompile with -fPIC"), | |
6059 | name, input_bfd, input_section, rel->r_offset); | |
6060 | return FALSE; | |
6061 | } | |
a06ea964 NC |
6062 | break; |
6063 | ||
6064 | case bfd_reloc_undefined: | |
6065 | if (!((*info->callbacks->undefined_symbol) | |
6066 | (info, name, input_bfd, input_section, | |
6067 | rel->r_offset, TRUE))) | |
6068 | return FALSE; | |
6069 | break; | |
6070 | ||
6071 | case bfd_reloc_outofrange: | |
6072 | error_message = _("out of range"); | |
6073 | goto common_error; | |
6074 | ||
6075 | case bfd_reloc_notsupported: | |
6076 | error_message = _("unsupported relocation"); | |
6077 | goto common_error; | |
6078 | ||
6079 | case bfd_reloc_dangerous: | |
6080 | /* error_message should already be set. */ | |
6081 | goto common_error; | |
6082 | ||
6083 | default: | |
6084 | error_message = _("unknown error"); | |
6085 | /* Fall through. */ | |
6086 | ||
6087 | common_error: | |
6088 | BFD_ASSERT (error_message != NULL); | |
6089 | if (!((*info->callbacks->reloc_dangerous) | |
6090 | (info, error_message, input_bfd, input_section, | |
6091 | rel->r_offset))) | |
6092 | return FALSE; | |
6093 | break; | |
6094 | } | |
6095 | } | |
6096 | } | |
6097 | ||
6098 | return TRUE; | |
6099 | } | |
6100 | ||
6101 | /* Set the right machine number. */ | |
6102 | ||
6103 | static bfd_boolean | |
cec5225b | 6104 | elfNN_aarch64_object_p (bfd *abfd) |
a06ea964 | 6105 | { |
cec5225b YZ |
6106 | #if ARCH_SIZE == 32 |
6107 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32); | |
6108 | #else | |
a06ea964 | 6109 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64); |
cec5225b | 6110 | #endif |
a06ea964 NC |
6111 | return TRUE; |
6112 | } | |
6113 | ||
6114 | /* Function to keep AArch64 specific flags in the ELF header. */ | |
6115 | ||
6116 | static bfd_boolean | |
cec5225b | 6117 | elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags) |
a06ea964 NC |
6118 | { |
6119 | if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags) | |
6120 | { | |
6121 | } | |
6122 | else | |
6123 | { | |
6124 | elf_elfheader (abfd)->e_flags = flags; | |
6125 | elf_flags_init (abfd) = TRUE; | |
6126 | } | |
6127 | ||
6128 | return TRUE; | |
6129 | } | |
6130 | ||
a06ea964 NC |
6131 | /* Merge backend specific data from an object file to the output |
6132 | object file when linking. */ | |
6133 | ||
6134 | static bfd_boolean | |
cec5225b | 6135 | elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
a06ea964 NC |
6136 | { |
6137 | flagword out_flags; | |
6138 | flagword in_flags; | |
6139 | bfd_boolean flags_compatible = TRUE; | |
6140 | asection *sec; | |
6141 | ||
6142 | /* Check if we have the same endianess. */ | |
6143 | if (!_bfd_generic_verify_endian_match (ibfd, obfd)) | |
6144 | return FALSE; | |
6145 | ||
6146 | if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd)) | |
6147 | return TRUE; | |
6148 | ||
6149 | /* The input BFD must have had its flags initialised. */ | |
6150 | /* The following seems bogus to me -- The flags are initialized in | |
6151 | the assembler but I don't think an elf_flags_init field is | |
6152 | written into the object. */ | |
6153 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ | |
6154 | ||
6155 | in_flags = elf_elfheader (ibfd)->e_flags; | |
6156 | out_flags = elf_elfheader (obfd)->e_flags; | |
6157 | ||
6158 | if (!elf_flags_init (obfd)) | |
6159 | { | |
6160 | /* If the input is the default architecture and had the default | |
6161 | flags then do not bother setting the flags for the output | |
6162 | architecture, instead allow future merges to do this. If no | |
6163 | future merges ever set these flags then they will retain their | |
6164 | uninitialised values, which surprise surprise, correspond | |
6165 | to the default values. */ | |
6166 | if (bfd_get_arch_info (ibfd)->the_default | |
6167 | && elf_elfheader (ibfd)->e_flags == 0) | |
6168 | return TRUE; | |
6169 | ||
6170 | elf_flags_init (obfd) = TRUE; | |
6171 | elf_elfheader (obfd)->e_flags = in_flags; | |
6172 | ||
6173 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
6174 | && bfd_get_arch_info (obfd)->the_default) | |
6175 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
6176 | bfd_get_mach (ibfd)); | |
6177 | ||
6178 | return TRUE; | |
6179 | } | |
6180 | ||
6181 | /* Identical flags must be compatible. */ | |
6182 | if (in_flags == out_flags) | |
6183 | return TRUE; | |
6184 | ||
6185 | /* Check to see if the input BFD actually contains any sections. If | |
6186 | not, its flags may not have been initialised either, but it | |
6187 | cannot actually cause any incompatiblity. Do not short-circuit | |
6188 | dynamic objects; their section list may be emptied by | |
6189 | elf_link_add_object_symbols. | |
6190 | ||
6191 | Also check to see if there are no code sections in the input. | |
6192 | In this case there is no need to check for code specific flags. | |
6193 | XXX - do we need to worry about floating-point format compatability | |
6194 | in data sections ? */ | |
6195 | if (!(ibfd->flags & DYNAMIC)) | |
6196 | { | |
6197 | bfd_boolean null_input_bfd = TRUE; | |
6198 | bfd_boolean only_data_sections = TRUE; | |
6199 | ||
6200 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
6201 | { | |
6202 | if ((bfd_get_section_flags (ibfd, sec) | |
6203 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
6204 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
6205 | only_data_sections = FALSE; | |
6206 | ||
6207 | null_input_bfd = FALSE; | |
6208 | break; | |
6209 | } | |
6210 | ||
6211 | if (null_input_bfd || only_data_sections) | |
6212 | return TRUE; | |
6213 | } | |
6214 | ||
6215 | return flags_compatible; | |
6216 | } | |
6217 | ||
6218 | /* Display the flags field. */ | |
6219 | ||
6220 | static bfd_boolean | |
cec5225b | 6221 | elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr) |
a06ea964 NC |
6222 | { |
6223 | FILE *file = (FILE *) ptr; | |
6224 | unsigned long flags; | |
6225 | ||
6226 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
6227 | ||
6228 | /* Print normal ELF private data. */ | |
6229 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
6230 | ||
6231 | flags = elf_elfheader (abfd)->e_flags; | |
6232 | /* Ignore init flag - it may not be set, despite the flags field | |
6233 | containing valid data. */ | |
6234 | ||
6235 | /* xgettext:c-format */ | |
6236 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
6237 | ||
6238 | if (flags) | |
6239 | fprintf (file, _("<Unrecognised flag bits set>")); | |
6240 | ||
6241 | fputc ('\n', file); | |
6242 | ||
6243 | return TRUE; | |
6244 | } | |
6245 | ||
6246 | /* Update the got entry reference counts for the section being removed. */ | |
6247 | ||
6248 | static bfd_boolean | |
cec5225b | 6249 | elfNN_aarch64_gc_sweep_hook (bfd *abfd, |
cb8af559 NC |
6250 | struct bfd_link_info *info, |
6251 | asection *sec, | |
6252 | const Elf_Internal_Rela * relocs) | |
a06ea964 | 6253 | { |
cec5225b | 6254 | struct elf_aarch64_link_hash_table *htab; |
59c108f7 NC |
6255 | Elf_Internal_Shdr *symtab_hdr; |
6256 | struct elf_link_hash_entry **sym_hashes; | |
cb8af559 | 6257 | struct elf_aarch64_local_symbol *locals; |
59c108f7 NC |
6258 | const Elf_Internal_Rela *rel, *relend; |
6259 | ||
0e1862bb | 6260 | if (bfd_link_relocatable (info)) |
59c108f7 NC |
6261 | return TRUE; |
6262 | ||
cec5225b | 6263 | htab = elf_aarch64_hash_table (info); |
59c108f7 NC |
6264 | |
6265 | if (htab == NULL) | |
6266 | return FALSE; | |
6267 | ||
6268 | elf_section_data (sec)->local_dynrel = NULL; | |
6269 | ||
6270 | symtab_hdr = &elf_symtab_hdr (abfd); | |
6271 | sym_hashes = elf_sym_hashes (abfd); | |
6272 | ||
cec5225b | 6273 | locals = elf_aarch64_locals (abfd); |
59c108f7 NC |
6274 | |
6275 | relend = relocs + sec->reloc_count; | |
6276 | for (rel = relocs; rel < relend; rel++) | |
6277 | { | |
6278 | unsigned long r_symndx; | |
6279 | unsigned int r_type; | |
6280 | struct elf_link_hash_entry *h = NULL; | |
6281 | ||
cec5225b | 6282 | r_symndx = ELFNN_R_SYM (rel->r_info); |
8847944f | 6283 | |
59c108f7 NC |
6284 | if (r_symndx >= symtab_hdr->sh_info) |
6285 | { | |
8847944f | 6286 | |
59c108f7 NC |
6287 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
6288 | while (h->root.type == bfd_link_hash_indirect | |
6289 | || h->root.type == bfd_link_hash_warning) | |
6290 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
59c108f7 NC |
6291 | } |
6292 | else | |
6293 | { | |
6294 | Elf_Internal_Sym *isym; | |
6295 | ||
8847944f | 6296 | /* A local symbol. */ |
59c108f7 NC |
6297 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
6298 | abfd, r_symndx); | |
1419bbe5 WN |
6299 | |
6300 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
6301 | if (isym != NULL | |
6302 | && ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
6303 | { | |
6304 | h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, FALSE); | |
6305 | if (h == NULL) | |
6306 | abort (); | |
6307 | } | |
6308 | } | |
6309 | ||
6310 | if (h) | |
6311 | { | |
6312 | struct elf_aarch64_link_hash_entry *eh; | |
6313 | struct elf_dyn_relocs **pp; | |
6314 | struct elf_dyn_relocs *p; | |
6315 | ||
6316 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
6317 | ||
6318 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
6319 | if (p->sec == sec) | |
6320 | { | |
6321 | /* Everything must go for SEC. */ | |
6322 | *pp = p->next; | |
6323 | break; | |
6324 | } | |
59c108f7 NC |
6325 | } |
6326 | ||
cec5225b | 6327 | r_type = ELFNN_R_TYPE (rel->r_info); |
a6bb11b2 | 6328 | switch (aarch64_tls_transition (abfd,info, r_type, h ,r_symndx)) |
59c108f7 | 6329 | { |
a6bb11b2 | 6330 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
7bcccb57 | 6331 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
7018c030 | 6332 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
7bcccb57 | 6333 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 6334 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
7bcccb57 MS |
6335 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
6336 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: | |
6337 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
389b8029 | 6338 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
7bcccb57 MS |
6339 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
6340 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: | |
1ada945d | 6341 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a6bb11b2 | 6342 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
7bcccb57 | 6343 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 6344 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 6345 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 6346 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
7bcccb57 | 6347 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 6348 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
73f925cc | 6349 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 6350 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 6351 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a6bb11b2 | 6352 | if (h != NULL) |
59c108f7 NC |
6353 | { |
6354 | if (h->got.refcount > 0) | |
6355 | h->got.refcount -= 1; | |
1419bbe5 WN |
6356 | |
6357 | if (h->type == STT_GNU_IFUNC) | |
6358 | { | |
6359 | if (h->plt.refcount > 0) | |
6360 | h->plt.refcount -= 1; | |
6361 | } | |
59c108f7 | 6362 | } |
cb8af559 | 6363 | else if (locals != NULL) |
59c108f7 | 6364 | { |
cb8af559 NC |
6365 | if (locals[r_symndx].got_refcount > 0) |
6366 | locals[r_symndx].got_refcount -= 1; | |
59c108f7 NC |
6367 | } |
6368 | break; | |
6369 | ||
a6bb11b2 YZ |
6370 | case BFD_RELOC_AARCH64_CALL26: |
6371 | case BFD_RELOC_AARCH64_JUMP26: | |
6372 | /* If this is a local symbol then we resolve it | |
6373 | directly without creating a PLT entry. */ | |
59c108f7 NC |
6374 | if (h == NULL) |
6375 | continue; | |
6376 | ||
6377 | if (h->plt.refcount > 0) | |
6378 | h->plt.refcount -= 1; | |
6379 | break; | |
6380 | ||
ce336788 JW |
6381 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
6382 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
6383 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
614b09ce JW |
6384 | case BFD_RELOC_AARCH64_MOVW_G0_NC: |
6385 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
6386 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
6387 | case BFD_RELOC_AARCH64_MOVW_G3: | |
a6bb11b2 | 6388 | case BFD_RELOC_AARCH64_NN: |
0e1862bb | 6389 | if (h != NULL && bfd_link_executable (info)) |
59c108f7 NC |
6390 | { |
6391 | if (h->plt.refcount > 0) | |
6392 | h->plt.refcount -= 1; | |
6393 | } | |
6394 | break; | |
cec5225b | 6395 | |
59c108f7 NC |
6396 | default: |
6397 | break; | |
6398 | } | |
6399 | } | |
6400 | ||
a06ea964 NC |
6401 | return TRUE; |
6402 | } | |
6403 | ||
6404 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
6405 | regular object. The current definition is in some section of the | |
6406 | dynamic object, but we're not including those sections. We have to | |
6407 | change the definition to something the rest of the link can | |
6408 | understand. */ | |
6409 | ||
6410 | static bfd_boolean | |
cec5225b | 6411 | elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info, |
a06ea964 NC |
6412 | struct elf_link_hash_entry *h) |
6413 | { | |
cec5225b | 6414 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
6415 | asection *s; |
6416 | ||
6417 | /* If this is a function, put it in the procedure linkage table. We | |
6418 | will fill in the contents of the procedure linkage table later, | |
6419 | when we know the address of the .got section. */ | |
1419bbe5 | 6420 | if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt) |
a06ea964 NC |
6421 | { |
6422 | if (h->plt.refcount <= 0 | |
1419bbe5 WN |
6423 | || (h->type != STT_GNU_IFUNC |
6424 | && (SYMBOL_CALLS_LOCAL (info, h) | |
6425 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
6426 | && h->root.type == bfd_link_hash_undefweak)))) | |
a06ea964 NC |
6427 | { |
6428 | /* This case can occur if we saw a CALL26 reloc in | |
6429 | an input file, but the symbol wasn't referred to | |
6430 | by a dynamic object or all references were | |
6431 | garbage collected. In which case we can end up | |
6432 | resolving. */ | |
6433 | h->plt.offset = (bfd_vma) - 1; | |
6434 | h->needs_plt = 0; | |
6435 | } | |
6436 | ||
6437 | return TRUE; | |
6438 | } | |
6439 | else | |
80de0c6d | 6440 | /* Otherwise, reset to -1. */ |
a06ea964 NC |
6441 | h->plt.offset = (bfd_vma) - 1; |
6442 | ||
6443 | ||
6444 | /* If this is a weak symbol, and there is a real definition, the | |
6445 | processor independent code will have arranged for us to see the | |
6446 | real definition first, and we can just use the same value. */ | |
6447 | if (h->u.weakdef != NULL) | |
6448 | { | |
6449 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
6450 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
6451 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
6452 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
6453 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) | |
6454 | h->non_got_ref = h->u.weakdef->non_got_ref; | |
6455 | return TRUE; | |
6456 | } | |
6457 | ||
6458 | /* If we are creating a shared library, we must presume that the | |
6459 | only references to the symbol are via the global offset table. | |
6460 | For such cases we need not do anything here; the relocations will | |
6461 | be handled correctly by relocate_section. */ | |
0e1862bb | 6462 | if (bfd_link_pic (info)) |
a06ea964 NC |
6463 | return TRUE; |
6464 | ||
6465 | /* If there are no references to this symbol that do not use the | |
6466 | GOT, we don't need to generate a copy reloc. */ | |
6467 | if (!h->non_got_ref) | |
6468 | return TRUE; | |
6469 | ||
6470 | /* If -z nocopyreloc was given, we won't generate them either. */ | |
6471 | if (info->nocopyreloc) | |
6472 | { | |
6473 | h->non_got_ref = 0; | |
6474 | return TRUE; | |
6475 | } | |
6476 | ||
6477 | /* We must allocate the symbol in our .dynbss section, which will | |
6478 | become part of the .bss section of the executable. There will be | |
6479 | an entry for this symbol in the .dynsym section. The dynamic | |
6480 | object will contain position independent code, so all references | |
6481 | from the dynamic object to this symbol will go through the global | |
6482 | offset table. The dynamic linker will use the .dynsym entry to | |
6483 | determine the address it must put in the global offset table, so | |
6484 | both the dynamic object and the regular object will refer to the | |
6485 | same memory location for the variable. */ | |
6486 | ||
cec5225b | 6487 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
6488 | |
6489 | /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker | |
6490 | to copy the initial value out of the dynamic object and into the | |
6491 | runtime process image. */ | |
6492 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) | |
6493 | { | |
6494 | htab->srelbss->size += RELOC_SIZE (htab); | |
6495 | h->needs_copy = 1; | |
6496 | } | |
6497 | ||
6498 | s = htab->sdynbss; | |
6499 | ||
6cabe1ea | 6500 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
a06ea964 NC |
6501 | |
6502 | } | |
6503 | ||
6504 | static bfd_boolean | |
cec5225b | 6505 | elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number) |
a06ea964 NC |
6506 | { |
6507 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 6508 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
6509 | if (locals == NULL) |
6510 | { | |
6511 | locals = (struct elf_aarch64_local_symbol *) | |
6512 | bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol)); | |
6513 | if (locals == NULL) | |
6514 | return FALSE; | |
cec5225b | 6515 | elf_aarch64_locals (abfd) = locals; |
a06ea964 NC |
6516 | } |
6517 | return TRUE; | |
6518 | } | |
6519 | ||
cc0efaa8 MS |
6520 | /* Create the .got section to hold the global offset table. */ |
6521 | ||
6522 | static bfd_boolean | |
6523 | aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) | |
6524 | { | |
6525 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
6526 | flagword flags; | |
6527 | asection *s; | |
6528 | struct elf_link_hash_entry *h; | |
6529 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
6530 | ||
6531 | /* This function may be called more than once. */ | |
6532 | s = bfd_get_linker_section (abfd, ".got"); | |
6533 | if (s != NULL) | |
6534 | return TRUE; | |
6535 | ||
6536 | flags = bed->dynamic_sec_flags; | |
6537 | ||
6538 | s = bfd_make_section_anyway_with_flags (abfd, | |
6539 | (bed->rela_plts_and_copies_p | |
6540 | ? ".rela.got" : ".rel.got"), | |
6541 | (bed->dynamic_sec_flags | |
6542 | | SEC_READONLY)); | |
6543 | if (s == NULL | |
6544 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
6545 | return FALSE; | |
6546 | htab->srelgot = s; | |
6547 | ||
6548 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); | |
6549 | if (s == NULL | |
6550 | || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
6551 | return FALSE; | |
6552 | htab->sgot = s; | |
6553 | htab->sgot->size += GOT_ENTRY_SIZE; | |
6554 | ||
6555 | if (bed->want_got_sym) | |
6556 | { | |
6557 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
6558 | (or .got.plt) section. We don't do this in the linker script | |
6559 | because we don't want to define the symbol if we are not creating | |
6560 | a global offset table. */ | |
6561 | h = _bfd_elf_define_linkage_sym (abfd, info, s, | |
6562 | "_GLOBAL_OFFSET_TABLE_"); | |
6563 | elf_hash_table (info)->hgot = h; | |
6564 | if (h == NULL) | |
6565 | return FALSE; | |
6566 | } | |
6567 | ||
6568 | if (bed->want_got_plt) | |
6569 | { | |
6570 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); | |
6571 | if (s == NULL | |
6572 | || !bfd_set_section_alignment (abfd, s, | |
6573 | bed->s->log_file_align)) | |
6574 | return FALSE; | |
6575 | htab->sgotplt = s; | |
6576 | } | |
6577 | ||
6578 | /* The first bit of the global offset table is the header. */ | |
6579 | s->size += bed->got_header_size; | |
6580 | ||
6581 | return TRUE; | |
6582 | } | |
6583 | ||
a06ea964 NC |
6584 | /* Look through the relocs for a section during the first phase. */ |
6585 | ||
6586 | static bfd_boolean | |
cec5225b | 6587 | elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
a06ea964 NC |
6588 | asection *sec, const Elf_Internal_Rela *relocs) |
6589 | { | |
6590 | Elf_Internal_Shdr *symtab_hdr; | |
6591 | struct elf_link_hash_entry **sym_hashes; | |
6592 | const Elf_Internal_Rela *rel; | |
6593 | const Elf_Internal_Rela *rel_end; | |
6594 | asection *sreloc; | |
6595 | ||
cec5225b | 6596 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 6597 | |
0e1862bb | 6598 | if (bfd_link_relocatable (info)) |
a06ea964 NC |
6599 | return TRUE; |
6600 | ||
6601 | BFD_ASSERT (is_aarch64_elf (abfd)); | |
6602 | ||
cec5225b | 6603 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
6604 | sreloc = NULL; |
6605 | ||
6606 | symtab_hdr = &elf_symtab_hdr (abfd); | |
6607 | sym_hashes = elf_sym_hashes (abfd); | |
a06ea964 NC |
6608 | |
6609 | rel_end = relocs + sec->reloc_count; | |
6610 | for (rel = relocs; rel < rel_end; rel++) | |
6611 | { | |
6612 | struct elf_link_hash_entry *h; | |
6613 | unsigned long r_symndx; | |
6614 | unsigned int r_type; | |
a6bb11b2 | 6615 | bfd_reloc_code_real_type bfd_r_type; |
1419bbe5 | 6616 | Elf_Internal_Sym *isym; |
a06ea964 | 6617 | |
cec5225b YZ |
6618 | r_symndx = ELFNN_R_SYM (rel->r_info); |
6619 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 NC |
6620 | |
6621 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
6622 | { | |
6623 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd, | |
6624 | r_symndx); | |
6625 | return FALSE; | |
6626 | } | |
6627 | ||
ed5acf27 | 6628 | if (r_symndx < symtab_hdr->sh_info) |
1419bbe5 WN |
6629 | { |
6630 | /* A local symbol. */ | |
6631 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
6632 | abfd, r_symndx); | |
6633 | if (isym == NULL) | |
6634 | return FALSE; | |
6635 | ||
6636 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
6637 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
6638 | { | |
6639 | h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, | |
6640 | TRUE); | |
6641 | if (h == NULL) | |
6642 | return FALSE; | |
6643 | ||
6644 | /* Fake a STT_GNU_IFUNC symbol. */ | |
6645 | h->type = STT_GNU_IFUNC; | |
6646 | h->def_regular = 1; | |
6647 | h->ref_regular = 1; | |
6648 | h->forced_local = 1; | |
6649 | h->root.type = bfd_link_hash_defined; | |
6650 | } | |
6651 | else | |
6652 | h = NULL; | |
6653 | } | |
a06ea964 NC |
6654 | else |
6655 | { | |
6656 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
6657 | while (h->root.type == bfd_link_hash_indirect | |
6658 | || h->root.type == bfd_link_hash_warning) | |
6659 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 AM |
6660 | |
6661 | /* PR15323, ref flags aren't set for references in the same | |
6662 | object. */ | |
6663 | h->root.non_ir_ref = 1; | |
a06ea964 NC |
6664 | } |
6665 | ||
6666 | /* Could be done earlier, if h were already available. */ | |
a6bb11b2 | 6667 | bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx); |
a06ea964 | 6668 | |
1419bbe5 WN |
6669 | if (h != NULL) |
6670 | { | |
6671 | /* Create the ifunc sections for static executables. If we | |
6672 | never see an indirect function symbol nor we are building | |
6673 | a static executable, those sections will be empty and | |
6674 | won't appear in output. */ | |
6675 | switch (bfd_r_type) | |
6676 | { | |
6677 | default: | |
6678 | break; | |
6679 | ||
ce336788 JW |
6680 | case BFD_RELOC_AARCH64_ADD_LO12: |
6681 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: | |
6682 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
1419bbe5 | 6683 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 6684 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
1419bbe5 | 6685 | case BFD_RELOC_AARCH64_JUMP26: |
7018c030 | 6686 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
1419bbe5 | 6687 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 6688 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
1419bbe5 | 6689 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
ce336788 | 6690 | case BFD_RELOC_AARCH64_NN: |
1419bbe5 WN |
6691 | if (htab->root.dynobj == NULL) |
6692 | htab->root.dynobj = abfd; | |
6693 | if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info)) | |
6694 | return FALSE; | |
6695 | break; | |
6696 | } | |
6697 | ||
6698 | /* It is referenced by a non-shared object. */ | |
6699 | h->ref_regular = 1; | |
6700 | h->root.non_ir_ref = 1; | |
6701 | } | |
6702 | ||
a6bb11b2 | 6703 | switch (bfd_r_type) |
a06ea964 | 6704 | { |
a6bb11b2 | 6705 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
6706 | |
6707 | /* We don't need to handle relocs into sections not going into | |
6708 | the "real" output. */ | |
6709 | if ((sec->flags & SEC_ALLOC) == 0) | |
6710 | break; | |
6711 | ||
6712 | if (h != NULL) | |
6713 | { | |
0e1862bb | 6714 | if (!bfd_link_pic (info)) |
a06ea964 NC |
6715 | h->non_got_ref = 1; |
6716 | ||
6717 | h->plt.refcount += 1; | |
6718 | h->pointer_equality_needed = 1; | |
6719 | } | |
6720 | ||
6721 | /* No need to do anything if we're not creating a shared | |
6722 | object. */ | |
0e1862bb | 6723 | if (! bfd_link_pic (info)) |
a06ea964 NC |
6724 | break; |
6725 | ||
6726 | { | |
6727 | struct elf_dyn_relocs *p; | |
6728 | struct elf_dyn_relocs **head; | |
6729 | ||
6730 | /* We must copy these reloc types into the output file. | |
6731 | Create a reloc section in dynobj and make room for | |
6732 | this reloc. */ | |
6733 | if (sreloc == NULL) | |
6734 | { | |
6735 | if (htab->root.dynobj == NULL) | |
6736 | htab->root.dynobj = abfd; | |
6737 | ||
6738 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
0608afa7 | 6739 | (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE); |
a06ea964 NC |
6740 | |
6741 | if (sreloc == NULL) | |
6742 | return FALSE; | |
6743 | } | |
6744 | ||
6745 | /* If this is a global symbol, we count the number of | |
6746 | relocations we need for this symbol. */ | |
6747 | if (h != NULL) | |
6748 | { | |
cec5225b YZ |
6749 | struct elf_aarch64_link_hash_entry *eh; |
6750 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
6751 | head = &eh->dyn_relocs; |
6752 | } | |
6753 | else | |
6754 | { | |
6755 | /* Track dynamic relocs needed for local syms too. | |
6756 | We really need local syms available to do this | |
6757 | easily. Oh well. */ | |
6758 | ||
6759 | asection *s; | |
6760 | void **vpp; | |
a06ea964 NC |
6761 | |
6762 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
6763 | abfd, r_symndx); | |
6764 | if (isym == NULL) | |
6765 | return FALSE; | |
6766 | ||
6767 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
6768 | if (s == NULL) | |
6769 | s = sec; | |
6770 | ||
6771 | /* Beware of type punned pointers vs strict aliasing | |
6772 | rules. */ | |
6773 | vpp = &(elf_section_data (s)->local_dynrel); | |
6774 | head = (struct elf_dyn_relocs **) vpp; | |
6775 | } | |
6776 | ||
6777 | p = *head; | |
6778 | if (p == NULL || p->sec != sec) | |
6779 | { | |
6780 | bfd_size_type amt = sizeof *p; | |
6781 | p = ((struct elf_dyn_relocs *) | |
6782 | bfd_zalloc (htab->root.dynobj, amt)); | |
6783 | if (p == NULL) | |
6784 | return FALSE; | |
6785 | p->next = *head; | |
6786 | *head = p; | |
6787 | p->sec = sec; | |
6788 | } | |
6789 | ||
6790 | p->count += 1; | |
6791 | ||
6792 | } | |
6793 | break; | |
6794 | ||
6795 | /* RR: We probably want to keep a consistency check that | |
6796 | there are no dangling GOT_PAGE relocs. */ | |
a6bb11b2 | 6797 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
7bcccb57 | 6798 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
7018c030 | 6799 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
7bcccb57 | 6800 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 6801 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
7bcccb57 MS |
6802 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
6803 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: | |
6804 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
389b8029 | 6805 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
7bcccb57 MS |
6806 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
6807 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: | |
1ada945d | 6808 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a6bb11b2 | 6809 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
7bcccb57 | 6810 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 6811 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 6812 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 6813 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
7bcccb57 | 6814 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 6815 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
73f925cc | 6816 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 6817 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 6818 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
6819 | { |
6820 | unsigned got_type; | |
6821 | unsigned old_got_type; | |
6822 | ||
a6bb11b2 | 6823 | got_type = aarch64_reloc_got_type (bfd_r_type); |
a06ea964 NC |
6824 | |
6825 | if (h) | |
6826 | { | |
6827 | h->got.refcount += 1; | |
cec5225b | 6828 | old_got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
6829 | } |
6830 | else | |
6831 | { | |
6832 | struct elf_aarch64_local_symbol *locals; | |
6833 | ||
cec5225b | 6834 | if (!elfNN_aarch64_allocate_local_symbols |
a06ea964 NC |
6835 | (abfd, symtab_hdr->sh_info)) |
6836 | return FALSE; | |
6837 | ||
cec5225b | 6838 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
6839 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
6840 | locals[r_symndx].got_refcount += 1; | |
6841 | old_got_type = locals[r_symndx].got_type; | |
6842 | } | |
6843 | ||
6844 | /* If a variable is accessed with both general dynamic TLS | |
6845 | methods, two slots may be created. */ | |
6846 | if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type)) | |
6847 | got_type |= old_got_type; | |
6848 | ||
6849 | /* We will already have issued an error message if there | |
6850 | is a TLS/non-TLS mismatch, based on the symbol type. | |
6851 | So just combine any TLS types needed. */ | |
6852 | if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL | |
6853 | && got_type != GOT_NORMAL) | |
6854 | got_type |= old_got_type; | |
6855 | ||
6856 | /* If the symbol is accessed by both IE and GD methods, we | |
6857 | are able to relax. Turn off the GD flag, without | |
6858 | messing up with any other kind of TLS types that may be | |
6859 | involved. */ | |
6860 | if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type)) | |
6861 | got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD); | |
6862 | ||
6863 | if (old_got_type != got_type) | |
6864 | { | |
6865 | if (h != NULL) | |
cec5225b | 6866 | elf_aarch64_hash_entry (h)->got_type = got_type; |
a06ea964 NC |
6867 | else |
6868 | { | |
6869 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 6870 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
6871 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
6872 | locals[r_symndx].got_type = got_type; | |
6873 | } | |
6874 | } | |
6875 | ||
cc0efaa8 MS |
6876 | if (htab->root.dynobj == NULL) |
6877 | htab->root.dynobj = abfd; | |
6878 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
6879 | return FALSE; | |
a06ea964 NC |
6880 | break; |
6881 | } | |
6882 | ||
614b09ce JW |
6883 | case BFD_RELOC_AARCH64_MOVW_G0_NC: |
6884 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
6885 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
6886 | case BFD_RELOC_AARCH64_MOVW_G3: | |
0e1862bb | 6887 | if (bfd_link_pic (info)) |
614b09ce JW |
6888 | { |
6889 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
6890 | (*_bfd_error_handler) | |
6891 | (_("%B: relocation %s against `%s' can not be used when making " | |
6892 | "a shared object; recompile with -fPIC"), | |
6893 | abfd, elfNN_aarch64_howto_table[howto_index].name, | |
6894 | (h) ? h->root.root.string : "a local symbol"); | |
6895 | bfd_set_error (bfd_error_bad_value); | |
6896 | return FALSE; | |
6897 | } | |
6898 | ||
a6bb11b2 YZ |
6899 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
6900 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
6901 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
0e1862bb | 6902 | if (h != NULL && bfd_link_executable (info)) |
a06ea964 NC |
6903 | { |
6904 | /* If this reloc is in a read-only section, we might | |
6905 | need a copy reloc. We can't check reliably at this | |
6906 | stage whether the section is read-only, as input | |
6907 | sections have not yet been mapped to output sections. | |
6908 | Tentatively set the flag for now, and correct in | |
6909 | adjust_dynamic_symbol. */ | |
6910 | h->non_got_ref = 1; | |
6911 | h->plt.refcount += 1; | |
6912 | h->pointer_equality_needed = 1; | |
6913 | } | |
6914 | /* FIXME:: RR need to handle these in shared libraries | |
6915 | and essentially bomb out as these being non-PIC | |
6916 | relocations in shared libraries. */ | |
6917 | break; | |
6918 | ||
a6bb11b2 YZ |
6919 | case BFD_RELOC_AARCH64_CALL26: |
6920 | case BFD_RELOC_AARCH64_JUMP26: | |
a06ea964 NC |
6921 | /* If this is a local symbol then we resolve it |
6922 | directly without creating a PLT entry. */ | |
6923 | if (h == NULL) | |
6924 | continue; | |
6925 | ||
6926 | h->needs_plt = 1; | |
1419bbe5 WN |
6927 | if (h->plt.refcount <= 0) |
6928 | h->plt.refcount = 1; | |
6929 | else | |
6930 | h->plt.refcount += 1; | |
a06ea964 | 6931 | break; |
a6bb11b2 YZ |
6932 | |
6933 | default: | |
6934 | break; | |
a06ea964 NC |
6935 | } |
6936 | } | |
a6bb11b2 | 6937 | |
a06ea964 NC |
6938 | return TRUE; |
6939 | } | |
6940 | ||
6941 | /* Treat mapping symbols as special target symbols. */ | |
6942 | ||
6943 | static bfd_boolean | |
cec5225b | 6944 | elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
6945 | asymbol *sym) |
6946 | { | |
6947 | return bfd_is_aarch64_special_symbol_name (sym->name, | |
6948 | BFD_AARCH64_SPECIAL_SYM_TYPE_ANY); | |
6949 | } | |
6950 | ||
6951 | /* This is a copy of elf_find_function () from elf.c except that | |
6952 | AArch64 mapping symbols are ignored when looking for function names. */ | |
6953 | ||
6954 | static bfd_boolean | |
6955 | aarch64_elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, | |
a06ea964 | 6956 | asymbol **symbols, |
fb167eb2 | 6957 | asection *section, |
a06ea964 NC |
6958 | bfd_vma offset, |
6959 | const char **filename_ptr, | |
6960 | const char **functionname_ptr) | |
6961 | { | |
6962 | const char *filename = NULL; | |
6963 | asymbol *func = NULL; | |
6964 | bfd_vma low_func = 0; | |
6965 | asymbol **p; | |
6966 | ||
6967 | for (p = symbols; *p != NULL; p++) | |
6968 | { | |
6969 | elf_symbol_type *q; | |
6970 | ||
6971 | q = (elf_symbol_type *) * p; | |
6972 | ||
6973 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) | |
6974 | { | |
6975 | default: | |
6976 | break; | |
6977 | case STT_FILE: | |
6978 | filename = bfd_asymbol_name (&q->symbol); | |
6979 | break; | |
6980 | case STT_FUNC: | |
6981 | case STT_NOTYPE: | |
6982 | /* Skip mapping symbols. */ | |
6983 | if ((q->symbol.flags & BSF_LOCAL) | |
6984 | && (bfd_is_aarch64_special_symbol_name | |
6985 | (q->symbol.name, BFD_AARCH64_SPECIAL_SYM_TYPE_ANY))) | |
6986 | continue; | |
6987 | /* Fall through. */ | |
6988 | if (bfd_get_section (&q->symbol) == section | |
6989 | && q->symbol.value >= low_func && q->symbol.value <= offset) | |
6990 | { | |
6991 | func = (asymbol *) q; | |
6992 | low_func = q->symbol.value; | |
6993 | } | |
6994 | break; | |
6995 | } | |
6996 | } | |
6997 | ||
6998 | if (func == NULL) | |
6999 | return FALSE; | |
7000 | ||
7001 | if (filename_ptr) | |
7002 | *filename_ptr = filename; | |
7003 | if (functionname_ptr) | |
7004 | *functionname_ptr = bfd_asymbol_name (func); | |
7005 | ||
7006 | return TRUE; | |
7007 | } | |
7008 | ||
7009 | ||
7010 | /* Find the nearest line to a particular section and offset, for error | |
7011 | reporting. This code is a duplicate of the code in elf.c, except | |
7012 | that it uses aarch64_elf_find_function. */ | |
7013 | ||
7014 | static bfd_boolean | |
cec5225b | 7015 | elfNN_aarch64_find_nearest_line (bfd *abfd, |
a06ea964 | 7016 | asymbol **symbols, |
fb167eb2 | 7017 | asection *section, |
a06ea964 NC |
7018 | bfd_vma offset, |
7019 | const char **filename_ptr, | |
7020 | const char **functionname_ptr, | |
fb167eb2 AM |
7021 | unsigned int *line_ptr, |
7022 | unsigned int *discriminator_ptr) | |
a06ea964 NC |
7023 | { |
7024 | bfd_boolean found = FALSE; | |
7025 | ||
fb167eb2 | 7026 | if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset, |
a06ea964 | 7027 | filename_ptr, functionname_ptr, |
fb167eb2 AM |
7028 | line_ptr, discriminator_ptr, |
7029 | dwarf_debug_sections, 0, | |
a06ea964 NC |
7030 | &elf_tdata (abfd)->dwarf2_find_line_info)) |
7031 | { | |
7032 | if (!*functionname_ptr) | |
fb167eb2 | 7033 | aarch64_elf_find_function (abfd, symbols, section, offset, |
a06ea964 NC |
7034 | *filename_ptr ? NULL : filename_ptr, |
7035 | functionname_ptr); | |
7036 | ||
7037 | return TRUE; | |
7038 | } | |
7039 | ||
fb167eb2 AM |
7040 | /* Skip _bfd_dwarf1_find_nearest_line since no known AArch64 |
7041 | toolchain uses DWARF1. */ | |
7042 | ||
a06ea964 NC |
7043 | if (!_bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, |
7044 | &found, filename_ptr, | |
7045 | functionname_ptr, line_ptr, | |
7046 | &elf_tdata (abfd)->line_info)) | |
7047 | return FALSE; | |
7048 | ||
7049 | if (found && (*functionname_ptr || *line_ptr)) | |
7050 | return TRUE; | |
7051 | ||
7052 | if (symbols == NULL) | |
7053 | return FALSE; | |
7054 | ||
fb167eb2 | 7055 | if (!aarch64_elf_find_function (abfd, symbols, section, offset, |
a06ea964 NC |
7056 | filename_ptr, functionname_ptr)) |
7057 | return FALSE; | |
7058 | ||
7059 | *line_ptr = 0; | |
7060 | return TRUE; | |
7061 | } | |
7062 | ||
7063 | static bfd_boolean | |
cec5225b | 7064 | elfNN_aarch64_find_inliner_info (bfd *abfd, |
a06ea964 NC |
7065 | const char **filename_ptr, |
7066 | const char **functionname_ptr, | |
7067 | unsigned int *line_ptr) | |
7068 | { | |
7069 | bfd_boolean found; | |
7070 | found = _bfd_dwarf2_find_inliner_info | |
7071 | (abfd, filename_ptr, | |
7072 | functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info); | |
7073 | return found; | |
7074 | } | |
7075 | ||
7076 | ||
7077 | static void | |
cec5225b | 7078 | elfNN_aarch64_post_process_headers (bfd *abfd, |
1419bbe5 | 7079 | struct bfd_link_info *link_info) |
a06ea964 NC |
7080 | { |
7081 | Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */ | |
7082 | ||
7083 | i_ehdrp = elf_elfheader (abfd); | |
a06ea964 | 7084 | i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION; |
1419bbe5 | 7085 | |
78245035 | 7086 | _bfd_elf_post_process_headers (abfd, link_info); |
a06ea964 NC |
7087 | } |
7088 | ||
7089 | static enum elf_reloc_type_class | |
cec5225b | 7090 | elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
7e612e98 AM |
7091 | const asection *rel_sec ATTRIBUTE_UNUSED, |
7092 | const Elf_Internal_Rela *rela) | |
a06ea964 | 7093 | { |
cec5225b | 7094 | switch ((int) ELFNN_R_TYPE (rela->r_info)) |
a06ea964 | 7095 | { |
a6bb11b2 | 7096 | case AARCH64_R (RELATIVE): |
a06ea964 | 7097 | return reloc_class_relative; |
a6bb11b2 | 7098 | case AARCH64_R (JUMP_SLOT): |
a06ea964 | 7099 | return reloc_class_plt; |
a6bb11b2 | 7100 | case AARCH64_R (COPY): |
a06ea964 NC |
7101 | return reloc_class_copy; |
7102 | default: | |
7103 | return reloc_class_normal; | |
7104 | } | |
7105 | } | |
7106 | ||
a06ea964 NC |
7107 | /* Handle an AArch64 specific section when reading an object file. This is |
7108 | called when bfd_section_from_shdr finds a section with an unknown | |
7109 | type. */ | |
7110 | ||
7111 | static bfd_boolean | |
cec5225b | 7112 | elfNN_aarch64_section_from_shdr (bfd *abfd, |
a06ea964 NC |
7113 | Elf_Internal_Shdr *hdr, |
7114 | const char *name, int shindex) | |
7115 | { | |
7116 | /* There ought to be a place to keep ELF backend specific flags, but | |
7117 | at the moment there isn't one. We just keep track of the | |
7118 | sections by their name, instead. Fortunately, the ABI gives | |
7119 | names for all the AArch64 specific sections, so we will probably get | |
7120 | away with this. */ | |
7121 | switch (hdr->sh_type) | |
7122 | { | |
7123 | case SHT_AARCH64_ATTRIBUTES: | |
7124 | break; | |
7125 | ||
7126 | default: | |
7127 | return FALSE; | |
7128 | } | |
7129 | ||
7130 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
7131 | return FALSE; | |
7132 | ||
7133 | return TRUE; | |
7134 | } | |
7135 | ||
7136 | /* A structure used to record a list of sections, independently | |
7137 | of the next and prev fields in the asection structure. */ | |
7138 | typedef struct section_list | |
7139 | { | |
7140 | asection *sec; | |
7141 | struct section_list *next; | |
7142 | struct section_list *prev; | |
7143 | } | |
7144 | section_list; | |
7145 | ||
7146 | /* Unfortunately we need to keep a list of sections for which | |
7147 | an _aarch64_elf_section_data structure has been allocated. This | |
cec5225b | 7148 | is because it is possible for functions like elfNN_aarch64_write_section |
a06ea964 NC |
7149 | to be called on a section which has had an elf_data_structure |
7150 | allocated for it (and so the used_by_bfd field is valid) but | |
7151 | for which the AArch64 extended version of this structure - the | |
7152 | _aarch64_elf_section_data structure - has not been allocated. */ | |
7153 | static section_list *sections_with_aarch64_elf_section_data = NULL; | |
7154 | ||
7155 | static void | |
7156 | record_section_with_aarch64_elf_section_data (asection *sec) | |
7157 | { | |
7158 | struct section_list *entry; | |
7159 | ||
7160 | entry = bfd_malloc (sizeof (*entry)); | |
7161 | if (entry == NULL) | |
7162 | return; | |
7163 | entry->sec = sec; | |
7164 | entry->next = sections_with_aarch64_elf_section_data; | |
7165 | entry->prev = NULL; | |
7166 | if (entry->next != NULL) | |
7167 | entry->next->prev = entry; | |
7168 | sections_with_aarch64_elf_section_data = entry; | |
7169 | } | |
7170 | ||
7171 | static struct section_list * | |
7172 | find_aarch64_elf_section_entry (asection *sec) | |
7173 | { | |
7174 | struct section_list *entry; | |
7175 | static struct section_list *last_entry = NULL; | |
7176 | ||
7177 | /* This is a short cut for the typical case where the sections are added | |
7178 | to the sections_with_aarch64_elf_section_data list in forward order and | |
7179 | then looked up here in backwards order. This makes a real difference | |
7180 | to the ld-srec/sec64k.exp linker test. */ | |
7181 | entry = sections_with_aarch64_elf_section_data; | |
7182 | if (last_entry != NULL) | |
7183 | { | |
7184 | if (last_entry->sec == sec) | |
7185 | entry = last_entry; | |
7186 | else if (last_entry->next != NULL && last_entry->next->sec == sec) | |
7187 | entry = last_entry->next; | |
7188 | } | |
7189 | ||
7190 | for (; entry; entry = entry->next) | |
7191 | if (entry->sec == sec) | |
7192 | break; | |
7193 | ||
7194 | if (entry) | |
7195 | /* Record the entry prior to this one - it is the entry we are | |
7196 | most likely to want to locate next time. Also this way if we | |
7197 | have been called from | |
7198 | unrecord_section_with_aarch64_elf_section_data () we will not | |
7199 | be caching a pointer that is about to be freed. */ | |
7200 | last_entry = entry->prev; | |
7201 | ||
7202 | return entry; | |
7203 | } | |
7204 | ||
7205 | static void | |
7206 | unrecord_section_with_aarch64_elf_section_data (asection *sec) | |
7207 | { | |
7208 | struct section_list *entry; | |
7209 | ||
7210 | entry = find_aarch64_elf_section_entry (sec); | |
7211 | ||
7212 | if (entry) | |
7213 | { | |
7214 | if (entry->prev != NULL) | |
7215 | entry->prev->next = entry->next; | |
7216 | if (entry->next != NULL) | |
7217 | entry->next->prev = entry->prev; | |
7218 | if (entry == sections_with_aarch64_elf_section_data) | |
7219 | sections_with_aarch64_elf_section_data = entry->next; | |
7220 | free (entry); | |
7221 | } | |
7222 | } | |
7223 | ||
7224 | ||
7225 | typedef struct | |
7226 | { | |
7227 | void *finfo; | |
7228 | struct bfd_link_info *info; | |
7229 | asection *sec; | |
7230 | int sec_shndx; | |
7231 | int (*func) (void *, const char *, Elf_Internal_Sym *, | |
7232 | asection *, struct elf_link_hash_entry *); | |
7233 | } output_arch_syminfo; | |
7234 | ||
7235 | enum map_symbol_type | |
7236 | { | |
7237 | AARCH64_MAP_INSN, | |
7238 | AARCH64_MAP_DATA | |
7239 | }; | |
7240 | ||
7241 | ||
7242 | /* Output a single mapping symbol. */ | |
7243 | ||
7244 | static bfd_boolean | |
cec5225b | 7245 | elfNN_aarch64_output_map_sym (output_arch_syminfo *osi, |
a06ea964 NC |
7246 | enum map_symbol_type type, bfd_vma offset) |
7247 | { | |
7248 | static const char *names[2] = { "$x", "$d" }; | |
7249 | Elf_Internal_Sym sym; | |
7250 | ||
7251 | sym.st_value = (osi->sec->output_section->vma | |
7252 | + osi->sec->output_offset + offset); | |
7253 | sym.st_size = 0; | |
7254 | sym.st_other = 0; | |
7255 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
7256 | sym.st_shndx = osi->sec_shndx; | |
7257 | return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1; | |
7258 | } | |
7259 | ||
7260 | ||
7261 | ||
7262 | /* Output mapping symbols for PLT entries associated with H. */ | |
7263 | ||
7264 | static bfd_boolean | |
cec5225b | 7265 | elfNN_aarch64_output_plt_map (struct elf_link_hash_entry *h, void *inf) |
a06ea964 NC |
7266 | { |
7267 | output_arch_syminfo *osi = (output_arch_syminfo *) inf; | |
7268 | bfd_vma addr; | |
7269 | ||
7270 | if (h->root.type == bfd_link_hash_indirect) | |
7271 | return TRUE; | |
7272 | ||
7273 | if (h->root.type == bfd_link_hash_warning) | |
7274 | /* When warning symbols are created, they **replace** the "real" | |
7275 | entry in the hash table, thus we never get to see the real | |
7276 | symbol in a hash traversal. So look at it now. */ | |
7277 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7278 | ||
7279 | if (h->plt.offset == (bfd_vma) - 1) | |
7280 | return TRUE; | |
7281 | ||
7282 | addr = h->plt.offset; | |
7283 | if (addr == 32) | |
7284 | { | |
cec5225b | 7285 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 NC |
7286 | return FALSE; |
7287 | } | |
7288 | return TRUE; | |
7289 | } | |
7290 | ||
7291 | ||
7292 | /* Output a single local symbol for a generated stub. */ | |
7293 | ||
7294 | static bfd_boolean | |
cec5225b | 7295 | elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name, |
a06ea964 NC |
7296 | bfd_vma offset, bfd_vma size) |
7297 | { | |
7298 | Elf_Internal_Sym sym; | |
7299 | ||
7300 | sym.st_value = (osi->sec->output_section->vma | |
7301 | + osi->sec->output_offset + offset); | |
7302 | sym.st_size = size; | |
7303 | sym.st_other = 0; | |
7304 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
7305 | sym.st_shndx = osi->sec_shndx; | |
7306 | return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1; | |
7307 | } | |
7308 | ||
7309 | static bfd_boolean | |
7310 | aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) | |
7311 | { | |
cec5225b | 7312 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
7313 | asection *stub_sec; |
7314 | bfd_vma addr; | |
7315 | char *stub_name; | |
7316 | output_arch_syminfo *osi; | |
7317 | ||
7318 | /* Massage our args to the form they really have. */ | |
cec5225b | 7319 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
7320 | osi = (output_arch_syminfo *) in_arg; |
7321 | ||
7322 | stub_sec = stub_entry->stub_sec; | |
7323 | ||
7324 | /* Ensure this stub is attached to the current section being | |
7325 | processed. */ | |
7326 | if (stub_sec != osi->sec) | |
7327 | return TRUE; | |
7328 | ||
7329 | addr = (bfd_vma) stub_entry->stub_offset; | |
7330 | ||
7331 | stub_name = stub_entry->output_name; | |
7332 | ||
7333 | switch (stub_entry->stub_type) | |
7334 | { | |
7335 | case aarch64_stub_adrp_branch: | |
cec5225b | 7336 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, |
a06ea964 NC |
7337 | sizeof (aarch64_adrp_branch_stub))) |
7338 | return FALSE; | |
cec5225b | 7339 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 NC |
7340 | return FALSE; |
7341 | break; | |
7342 | case aarch64_stub_long_branch: | |
cec5225b | 7343 | if (!elfNN_aarch64_output_stub_sym |
a06ea964 NC |
7344 | (osi, stub_name, addr, sizeof (aarch64_long_branch_stub))) |
7345 | return FALSE; | |
cec5225b | 7346 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 | 7347 | return FALSE; |
cec5225b | 7348 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16)) |
a06ea964 NC |
7349 | return FALSE; |
7350 | break; | |
68fcca92 JW |
7351 | case aarch64_stub_erratum_835769_veneer: |
7352 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
7353 | sizeof (aarch64_erratum_835769_stub))) | |
7354 | return FALSE; | |
7355 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
7356 | return FALSE; | |
7357 | break; | |
4106101c MS |
7358 | case aarch64_stub_erratum_843419_veneer: |
7359 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
7360 | sizeof (aarch64_erratum_843419_stub))) | |
7361 | return FALSE; | |
7362 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
7363 | return FALSE; | |
7364 | break; | |
7365 | ||
a06ea964 | 7366 | default: |
8e2fe09f | 7367 | abort (); |
a06ea964 NC |
7368 | } |
7369 | ||
7370 | return TRUE; | |
7371 | } | |
7372 | ||
7373 | /* Output mapping symbols for linker generated sections. */ | |
7374 | ||
7375 | static bfd_boolean | |
cec5225b | 7376 | elfNN_aarch64_output_arch_local_syms (bfd *output_bfd, |
a06ea964 NC |
7377 | struct bfd_link_info *info, |
7378 | void *finfo, | |
7379 | int (*func) (void *, const char *, | |
7380 | Elf_Internal_Sym *, | |
7381 | asection *, | |
7382 | struct elf_link_hash_entry | |
7383 | *)) | |
7384 | { | |
7385 | output_arch_syminfo osi; | |
cec5225b | 7386 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 7387 | |
cec5225b | 7388 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7389 | |
7390 | osi.finfo = finfo; | |
7391 | osi.info = info; | |
7392 | osi.func = func; | |
7393 | ||
7394 | /* Long calls stubs. */ | |
7395 | if (htab->stub_bfd && htab->stub_bfd->sections) | |
7396 | { | |
7397 | asection *stub_sec; | |
7398 | ||
7399 | for (stub_sec = htab->stub_bfd->sections; | |
7400 | stub_sec != NULL; stub_sec = stub_sec->next) | |
7401 | { | |
7402 | /* Ignore non-stub sections. */ | |
7403 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
7404 | continue; | |
7405 | ||
7406 | osi.sec = stub_sec; | |
7407 | ||
7408 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
7409 | (output_bfd, osi.sec->output_section); | |
7410 | ||
61865519 MS |
7411 | /* The first instruction in a stub is always a branch. */ |
7412 | if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0)) | |
7413 | return FALSE; | |
7414 | ||
a06ea964 NC |
7415 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub, |
7416 | &osi); | |
7417 | } | |
7418 | } | |
7419 | ||
7420 | /* Finally, output mapping symbols for the PLT. */ | |
7421 | if (!htab->root.splt || htab->root.splt->size == 0) | |
7422 | return TRUE; | |
7423 | ||
7424 | /* For now live without mapping symbols for the plt. */ | |
7425 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
7426 | (output_bfd, htab->root.splt->output_section); | |
7427 | osi.sec = htab->root.splt; | |
7428 | ||
cec5225b | 7429 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_output_plt_map, |
a06ea964 NC |
7430 | (void *) &osi); |
7431 | ||
7432 | return TRUE; | |
7433 | ||
7434 | } | |
7435 | ||
7436 | /* Allocate target specific section data. */ | |
7437 | ||
7438 | static bfd_boolean | |
cec5225b | 7439 | elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec) |
a06ea964 NC |
7440 | { |
7441 | if (!sec->used_by_bfd) | |
7442 | { | |
7443 | _aarch64_elf_section_data *sdata; | |
7444 | bfd_size_type amt = sizeof (*sdata); | |
7445 | ||
7446 | sdata = bfd_zalloc (abfd, amt); | |
7447 | if (sdata == NULL) | |
7448 | return FALSE; | |
7449 | sec->used_by_bfd = sdata; | |
7450 | } | |
7451 | ||
7452 | record_section_with_aarch64_elf_section_data (sec); | |
7453 | ||
7454 | return _bfd_elf_new_section_hook (abfd, sec); | |
7455 | } | |
7456 | ||
7457 | ||
7458 | static void | |
7459 | unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
7460 | asection *sec, | |
7461 | void *ignore ATTRIBUTE_UNUSED) | |
7462 | { | |
7463 | unrecord_section_with_aarch64_elf_section_data (sec); | |
7464 | } | |
7465 | ||
7466 | static bfd_boolean | |
cec5225b | 7467 | elfNN_aarch64_close_and_cleanup (bfd *abfd) |
a06ea964 NC |
7468 | { |
7469 | if (abfd->sections) | |
7470 | bfd_map_over_sections (abfd, | |
7471 | unrecord_section_via_map_over_sections, NULL); | |
7472 | ||
7473 | return _bfd_elf_close_and_cleanup (abfd); | |
7474 | } | |
7475 | ||
7476 | static bfd_boolean | |
cec5225b | 7477 | elfNN_aarch64_bfd_free_cached_info (bfd *abfd) |
a06ea964 NC |
7478 | { |
7479 | if (abfd->sections) | |
7480 | bfd_map_over_sections (abfd, | |
7481 | unrecord_section_via_map_over_sections, NULL); | |
7482 | ||
7483 | return _bfd_free_cached_info (abfd); | |
7484 | } | |
7485 | ||
a06ea964 NC |
7486 | /* Create dynamic sections. This is different from the ARM backend in that |
7487 | the got, plt, gotplt and their relocation sections are all created in the | |
7488 | standard part of the bfd elf backend. */ | |
7489 | ||
7490 | static bfd_boolean | |
cec5225b | 7491 | elfNN_aarch64_create_dynamic_sections (bfd *dynobj, |
a06ea964 NC |
7492 | struct bfd_link_info *info) |
7493 | { | |
cec5225b | 7494 | struct elf_aarch64_link_hash_table *htab; |
cc0efaa8 MS |
7495 | |
7496 | /* We need to create .got section. */ | |
7497 | if (!aarch64_elf_create_got_section (dynobj, info)) | |
7498 | return FALSE; | |
a06ea964 NC |
7499 | |
7500 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
7501 | return FALSE; | |
7502 | ||
cec5225b | 7503 | htab = elf_aarch64_hash_table (info); |
a06ea964 | 7504 | htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss"); |
0e1862bb | 7505 | if (!bfd_link_pic (info)) |
a06ea964 NC |
7506 | htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss"); |
7507 | ||
0e1862bb | 7508 | if (!htab->sdynbss || (!bfd_link_pic (info) && !htab->srelbss)) |
a06ea964 NC |
7509 | abort (); |
7510 | ||
a06ea964 NC |
7511 | return TRUE; |
7512 | } | |
7513 | ||
7514 | ||
7515 | /* Allocate space in .plt, .got and associated reloc sections for | |
7516 | dynamic relocs. */ | |
7517 | ||
7518 | static bfd_boolean | |
cec5225b | 7519 | elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
a06ea964 NC |
7520 | { |
7521 | struct bfd_link_info *info; | |
cec5225b YZ |
7522 | struct elf_aarch64_link_hash_table *htab; |
7523 | struct elf_aarch64_link_hash_entry *eh; | |
a06ea964 NC |
7524 | struct elf_dyn_relocs *p; |
7525 | ||
7526 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
7527 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
7528 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
7529 | ||
7530 | There is no need to process bfd_link_hash_indirect symbols here | |
7531 | because we will also be presented with the concrete instance of | |
cec5225b | 7532 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been |
a06ea964 NC |
7533 | called to copy all relevant data from the generic to the concrete |
7534 | symbol instance. | |
7535 | */ | |
7536 | if (h->root.type == bfd_link_hash_indirect) | |
7537 | return TRUE; | |
7538 | ||
7539 | if (h->root.type == bfd_link_hash_warning) | |
7540 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7541 | ||
7542 | info = (struct bfd_link_info *) inf; | |
cec5225b | 7543 | htab = elf_aarch64_hash_table (info); |
a06ea964 | 7544 | |
1419bbe5 WN |
7545 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
7546 | here if it is defined and referenced in a non-shared object. */ | |
7547 | if (h->type == STT_GNU_IFUNC | |
7548 | && h->def_regular) | |
7549 | return TRUE; | |
7550 | else if (htab->root.dynamic_sections_created && h->plt.refcount > 0) | |
a06ea964 NC |
7551 | { |
7552 | /* Make sure this symbol is output as a dynamic symbol. | |
7553 | Undefined weak syms won't yet be marked as dynamic. */ | |
7554 | if (h->dynindx == -1 && !h->forced_local) | |
7555 | { | |
7556 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
7557 | return FALSE; | |
7558 | } | |
7559 | ||
0e1862bb | 7560 | if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
a06ea964 NC |
7561 | { |
7562 | asection *s = htab->root.splt; | |
7563 | ||
7564 | /* If this is the first .plt entry, make room for the special | |
7565 | first entry. */ | |
7566 | if (s->size == 0) | |
7567 | s->size += htab->plt_header_size; | |
7568 | ||
7569 | h->plt.offset = s->size; | |
7570 | ||
7571 | /* If this symbol is not defined in a regular file, and we are | |
7572 | not generating a shared library, then set the symbol to this | |
7573 | location in the .plt. This is required to make function | |
7574 | pointers compare as equal between the normal executable and | |
7575 | the shared library. */ | |
0e1862bb | 7576 | if (!bfd_link_pic (info) && !h->def_regular) |
a06ea964 NC |
7577 | { |
7578 | h->root.u.def.section = s; | |
7579 | h->root.u.def.value = h->plt.offset; | |
7580 | } | |
7581 | ||
7582 | /* Make room for this entry. For now we only create the | |
7583 | small model PLT entries. We later need to find a way | |
7584 | of relaxing into these from the large model PLT entries. */ | |
7585 | s->size += PLT_SMALL_ENTRY_SIZE; | |
7586 | ||
7587 | /* We also need to make an entry in the .got.plt section, which | |
7588 | will be placed in the .got section by the linker script. */ | |
7589 | htab->root.sgotplt->size += GOT_ENTRY_SIZE; | |
7590 | ||
7591 | /* We also need to make an entry in the .rela.plt section. */ | |
7592 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
7593 | ||
7594 | /* We need to ensure that all GOT entries that serve the PLT | |
7595 | are consecutive with the special GOT slots [0] [1] and | |
7596 | [2]. Any addtional relocations, such as | |
7597 | R_AARCH64_TLSDESC, must be placed after the PLT related | |
7598 | entries. We abuse the reloc_count such that during | |
7599 | sizing we adjust reloc_count to indicate the number of | |
7600 | PLT related reserved entries. In subsequent phases when | |
7601 | filling in the contents of the reloc entries, PLT related | |
7602 | entries are placed by computing their PLT index (0 | |
7603 | .. reloc_count). While other none PLT relocs are placed | |
7604 | at the slot indicated by reloc_count and reloc_count is | |
7605 | updated. */ | |
7606 | ||
7607 | htab->root.srelplt->reloc_count++; | |
7608 | } | |
7609 | else | |
7610 | { | |
7611 | h->plt.offset = (bfd_vma) - 1; | |
7612 | h->needs_plt = 0; | |
7613 | } | |
7614 | } | |
7615 | else | |
7616 | { | |
7617 | h->plt.offset = (bfd_vma) - 1; | |
7618 | h->needs_plt = 0; | |
7619 | } | |
7620 | ||
cec5225b | 7621 | eh = (struct elf_aarch64_link_hash_entry *) h; |
a06ea964 NC |
7622 | eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; |
7623 | ||
7624 | if (h->got.refcount > 0) | |
7625 | { | |
7626 | bfd_boolean dyn; | |
cec5225b | 7627 | unsigned got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
7628 | |
7629 | h->got.offset = (bfd_vma) - 1; | |
7630 | ||
7631 | dyn = htab->root.dynamic_sections_created; | |
7632 | ||
7633 | /* Make sure this symbol is output as a dynamic symbol. | |
7634 | Undefined weak syms won't yet be marked as dynamic. */ | |
7635 | if (dyn && h->dynindx == -1 && !h->forced_local) | |
7636 | { | |
7637 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
7638 | return FALSE; | |
7639 | } | |
7640 | ||
7641 | if (got_type == GOT_UNKNOWN) | |
7642 | { | |
7643 | } | |
7644 | else if (got_type == GOT_NORMAL) | |
7645 | { | |
7646 | h->got.offset = htab->root.sgot->size; | |
7647 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
7648 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7649 | || h->root.type != bfd_link_hash_undefweak) | |
0e1862bb | 7650 | && (bfd_link_pic (info) |
a06ea964 NC |
7651 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) |
7652 | { | |
7653 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
7654 | } | |
7655 | } | |
7656 | else | |
7657 | { | |
7658 | int indx; | |
7659 | if (got_type & GOT_TLSDESC_GD) | |
7660 | { | |
7661 | eh->tlsdesc_got_jump_table_offset = | |
7662 | (htab->root.sgotplt->size | |
7663 | - aarch64_compute_jump_table_size (htab)); | |
7664 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
7665 | h->got.offset = (bfd_vma) - 2; | |
7666 | } | |
7667 | ||
7668 | if (got_type & GOT_TLS_GD) | |
7669 | { | |
7670 | h->got.offset = htab->root.sgot->size; | |
7671 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
7672 | } | |
7673 | ||
7674 | if (got_type & GOT_TLS_IE) | |
7675 | { | |
7676 | h->got.offset = htab->root.sgot->size; | |
7677 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
7678 | } | |
7679 | ||
7680 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
7681 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7682 | || h->root.type != bfd_link_hash_undefweak) | |
0e1862bb | 7683 | && (bfd_link_pic (info) |
a06ea964 NC |
7684 | || indx != 0 |
7685 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
7686 | { | |
7687 | if (got_type & GOT_TLSDESC_GD) | |
7688 | { | |
7689 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
7690 | /* Note reloc_count not incremented here! We have | |
7691 | already adjusted reloc_count for this relocation | |
7692 | type. */ | |
7693 | ||
7694 | /* TLSDESC PLT is now needed, but not yet determined. */ | |
7695 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
7696 | } | |
7697 | ||
7698 | if (got_type & GOT_TLS_GD) | |
7699 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
7700 | ||
7701 | if (got_type & GOT_TLS_IE) | |
7702 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
7703 | } | |
7704 | } | |
7705 | } | |
7706 | else | |
7707 | { | |
7708 | h->got.offset = (bfd_vma) - 1; | |
7709 | } | |
7710 | ||
7711 | if (eh->dyn_relocs == NULL) | |
7712 | return TRUE; | |
7713 | ||
7714 | /* In the shared -Bsymbolic case, discard space allocated for | |
7715 | dynamic pc-relative relocs against symbols which turn out to be | |
7716 | defined in regular objects. For the normal shared case, discard | |
7717 | space for pc-relative relocs that have become local due to symbol | |
7718 | visibility changes. */ | |
7719 | ||
0e1862bb | 7720 | if (bfd_link_pic (info)) |
a06ea964 NC |
7721 | { |
7722 | /* Relocs that use pc_count are those that appear on a call | |
7723 | insn, or certain REL relocs that can generated via assembly. | |
7724 | We want calls to protected symbols to resolve directly to the | |
7725 | function rather than going via the plt. If people want | |
7726 | function pointer comparisons to work as expected then they | |
7727 | should avoid writing weird assembly. */ | |
7728 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
7729 | { | |
7730 | struct elf_dyn_relocs **pp; | |
7731 | ||
7732 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) | |
7733 | { | |
7734 | p->count -= p->pc_count; | |
7735 | p->pc_count = 0; | |
7736 | if (p->count == 0) | |
7737 | *pp = p->next; | |
7738 | else | |
7739 | pp = &p->next; | |
7740 | } | |
7741 | } | |
7742 | ||
7743 | /* Also discard relocs on undefined weak syms with non-default | |
7744 | visibility. */ | |
7745 | if (eh->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak) | |
7746 | { | |
7747 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
7748 | eh->dyn_relocs = NULL; | |
7749 | ||
7750 | /* Make sure undefined weak symbols are output as a dynamic | |
7751 | symbol in PIEs. */ | |
7752 | else if (h->dynindx == -1 | |
7753 | && !h->forced_local | |
7754 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
7755 | return FALSE; | |
7756 | } | |
7757 | ||
7758 | } | |
7759 | else if (ELIMINATE_COPY_RELOCS) | |
7760 | { | |
7761 | /* For the non-shared case, discard space for relocs against | |
7762 | symbols which turn out to need copy relocs or are not | |
7763 | dynamic. */ | |
7764 | ||
7765 | if (!h->non_got_ref | |
7766 | && ((h->def_dynamic | |
7767 | && !h->def_regular) | |
7768 | || (htab->root.dynamic_sections_created | |
7769 | && (h->root.type == bfd_link_hash_undefweak | |
7770 | || h->root.type == bfd_link_hash_undefined)))) | |
7771 | { | |
7772 | /* Make sure this symbol is output as a dynamic symbol. | |
7773 | Undefined weak syms won't yet be marked as dynamic. */ | |
7774 | if (h->dynindx == -1 | |
7775 | && !h->forced_local | |
7776 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
7777 | return FALSE; | |
7778 | ||
7779 | /* If that succeeded, we know we'll be keeping all the | |
7780 | relocs. */ | |
7781 | if (h->dynindx != -1) | |
7782 | goto keep; | |
7783 | } | |
7784 | ||
7785 | eh->dyn_relocs = NULL; | |
7786 | ||
7787 | keep:; | |
7788 | } | |
7789 | ||
7790 | /* Finally, allocate space. */ | |
7791 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7792 | { | |
7793 | asection *sreloc; | |
7794 | ||
7795 | sreloc = elf_section_data (p->sec)->sreloc; | |
7796 | ||
7797 | BFD_ASSERT (sreloc != NULL); | |
7798 | ||
7799 | sreloc->size += p->count * RELOC_SIZE (htab); | |
7800 | } | |
7801 | ||
7802 | return TRUE; | |
7803 | } | |
7804 | ||
1419bbe5 WN |
7805 | /* Allocate space in .plt, .got and associated reloc sections for |
7806 | ifunc dynamic relocs. */ | |
7807 | ||
7808 | static bfd_boolean | |
7809 | elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h, | |
7810 | void *inf) | |
7811 | { | |
7812 | struct bfd_link_info *info; | |
7813 | struct elf_aarch64_link_hash_table *htab; | |
7814 | struct elf_aarch64_link_hash_entry *eh; | |
7815 | ||
7816 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
7817 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
7818 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
7819 | ||
7820 | There is no need to process bfd_link_hash_indirect symbols here | |
7821 | because we will also be presented with the concrete instance of | |
7822 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been | |
7823 | called to copy all relevant data from the generic to the concrete | |
7824 | symbol instance. | |
7825 | */ | |
7826 | if (h->root.type == bfd_link_hash_indirect) | |
7827 | return TRUE; | |
7828 | ||
7829 | if (h->root.type == bfd_link_hash_warning) | |
7830 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7831 | ||
7832 | info = (struct bfd_link_info *) inf; | |
7833 | htab = elf_aarch64_hash_table (info); | |
7834 | ||
7835 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
7836 | ||
7837 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it | |
7838 | here if it is defined and referenced in a non-shared object. */ | |
7839 | if (h->type == STT_GNU_IFUNC | |
7840 | && h->def_regular) | |
7841 | return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, | |
7842 | &eh->dyn_relocs, | |
7843 | htab->plt_entry_size, | |
7844 | htab->plt_header_size, | |
7845 | GOT_ENTRY_SIZE); | |
7846 | return TRUE; | |
7847 | } | |
7848 | ||
7849 | /* Allocate space in .plt, .got and associated reloc sections for | |
7850 | local dynamic relocs. */ | |
7851 | ||
7852 | static bfd_boolean | |
7853 | elfNN_aarch64_allocate_local_dynrelocs (void **slot, void *inf) | |
7854 | { | |
7855 | struct elf_link_hash_entry *h | |
7856 | = (struct elf_link_hash_entry *) *slot; | |
7857 | ||
7858 | if (h->type != STT_GNU_IFUNC | |
7859 | || !h->def_regular | |
7860 | || !h->ref_regular | |
7861 | || !h->forced_local | |
7862 | || h->root.type != bfd_link_hash_defined) | |
7863 | abort (); | |
7864 | ||
7865 | return elfNN_aarch64_allocate_dynrelocs (h, inf); | |
7866 | } | |
7867 | ||
7868 | /* Allocate space in .plt, .got and associated reloc sections for | |
7869 | local ifunc dynamic relocs. */ | |
7870 | ||
7871 | static bfd_boolean | |
7872 | elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf) | |
7873 | { | |
7874 | struct elf_link_hash_entry *h | |
7875 | = (struct elf_link_hash_entry *) *slot; | |
7876 | ||
7877 | if (h->type != STT_GNU_IFUNC | |
7878 | || !h->def_regular | |
7879 | || !h->ref_regular | |
7880 | || !h->forced_local | |
7881 | || h->root.type != bfd_link_hash_defined) | |
7882 | abort (); | |
7883 | ||
7884 | return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf); | |
7885 | } | |
a06ea964 | 7886 | |
c2170589 JW |
7887 | /* Find any dynamic relocs that apply to read-only sections. */ |
7888 | ||
7889 | static bfd_boolean | |
7890 | aarch64_readonly_dynrelocs (struct elf_link_hash_entry * h, void * inf) | |
7891 | { | |
7892 | struct elf_aarch64_link_hash_entry * eh; | |
7893 | struct elf_dyn_relocs * p; | |
7894 | ||
7895 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
7896 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7897 | { | |
7898 | asection *s = p->sec; | |
7899 | ||
7900 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7901 | { | |
7902 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
7903 | ||
7904 | info->flags |= DF_TEXTREL; | |
7905 | ||
7906 | /* Not an error, just cut short the traversal. */ | |
7907 | return FALSE; | |
7908 | } | |
7909 | } | |
7910 | return TRUE; | |
7911 | } | |
7912 | ||
a06ea964 NC |
7913 | /* This is the most important function of all . Innocuosly named |
7914 | though ! */ | |
7915 | static bfd_boolean | |
cec5225b | 7916 | elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
7917 | struct bfd_link_info *info) |
7918 | { | |
cec5225b | 7919 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
7920 | bfd *dynobj; |
7921 | asection *s; | |
7922 | bfd_boolean relocs; | |
7923 | bfd *ibfd; | |
7924 | ||
cec5225b | 7925 | htab = elf_aarch64_hash_table ((info)); |
a06ea964 NC |
7926 | dynobj = htab->root.dynobj; |
7927 | ||
7928 | BFD_ASSERT (dynobj != NULL); | |
7929 | ||
7930 | if (htab->root.dynamic_sections_created) | |
7931 | { | |
0e1862bb | 7932 | if (bfd_link_executable (info)) |
a06ea964 NC |
7933 | { |
7934 | s = bfd_get_linker_section (dynobj, ".interp"); | |
7935 | if (s == NULL) | |
7936 | abort (); | |
7937 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
7938 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
7939 | } | |
7940 | } | |
7941 | ||
7942 | /* Set up .got offsets for local syms, and space for local dynamic | |
7943 | relocs. */ | |
c72f2fb2 | 7944 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
a06ea964 NC |
7945 | { |
7946 | struct elf_aarch64_local_symbol *locals = NULL; | |
7947 | Elf_Internal_Shdr *symtab_hdr; | |
7948 | asection *srel; | |
7949 | unsigned int i; | |
7950 | ||
7951 | if (!is_aarch64_elf (ibfd)) | |
7952 | continue; | |
7953 | ||
7954 | for (s = ibfd->sections; s != NULL; s = s->next) | |
7955 | { | |
7956 | struct elf_dyn_relocs *p; | |
7957 | ||
7958 | for (p = (struct elf_dyn_relocs *) | |
7959 | (elf_section_data (s)->local_dynrel); p != NULL; p = p->next) | |
7960 | { | |
7961 | if (!bfd_is_abs_section (p->sec) | |
7962 | && bfd_is_abs_section (p->sec->output_section)) | |
7963 | { | |
7964 | /* Input section has been discarded, either because | |
7965 | it is a copy of a linkonce section or due to | |
7966 | linker script /DISCARD/, so we'll be discarding | |
7967 | the relocs too. */ | |
7968 | } | |
7969 | else if (p->count != 0) | |
7970 | { | |
7971 | srel = elf_section_data (p->sec)->sreloc; | |
7972 | srel->size += p->count * RELOC_SIZE (htab); | |
7973 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
7974 | info->flags |= DF_TEXTREL; | |
7975 | } | |
7976 | } | |
7977 | } | |
7978 | ||
cec5225b | 7979 | locals = elf_aarch64_locals (ibfd); |
a06ea964 NC |
7980 | if (!locals) |
7981 | continue; | |
7982 | ||
7983 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
7984 | srel = htab->root.srelgot; | |
7985 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
7986 | { | |
7987 | locals[i].got_offset = (bfd_vma) - 1; | |
7988 | locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
7989 | if (locals[i].got_refcount > 0) | |
7990 | { | |
7991 | unsigned got_type = locals[i].got_type; | |
7992 | if (got_type & GOT_TLSDESC_GD) | |
7993 | { | |
7994 | locals[i].tlsdesc_got_jump_table_offset = | |
7995 | (htab->root.sgotplt->size | |
7996 | - aarch64_compute_jump_table_size (htab)); | |
7997 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
7998 | locals[i].got_offset = (bfd_vma) - 2; | |
7999 | } | |
8000 | ||
8001 | if (got_type & GOT_TLS_GD) | |
8002 | { | |
8003 | locals[i].got_offset = htab->root.sgot->size; | |
8004 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
8005 | } | |
8006 | ||
b53b1bed JW |
8007 | if (got_type & GOT_TLS_IE |
8008 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
8009 | { |
8010 | locals[i].got_offset = htab->root.sgot->size; | |
8011 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8012 | } | |
8013 | ||
8014 | if (got_type == GOT_UNKNOWN) | |
8015 | { | |
8016 | } | |
8017 | ||
0e1862bb | 8018 | if (bfd_link_pic (info)) |
a06ea964 NC |
8019 | { |
8020 | if (got_type & GOT_TLSDESC_GD) | |
8021 | { | |
8022 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8023 | /* Note RELOC_COUNT not incremented here! */ | |
8024 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
8025 | } | |
8026 | ||
8027 | if (got_type & GOT_TLS_GD) | |
8028 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
8029 | ||
b53b1bed JW |
8030 | if (got_type & GOT_TLS_IE |
8031 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
8032 | htab->root.srelgot->size += RELOC_SIZE (htab); |
8033 | } | |
8034 | } | |
8035 | else | |
8036 | { | |
8037 | locals[i].got_refcount = (bfd_vma) - 1; | |
8038 | } | |
8039 | } | |
8040 | } | |
8041 | ||
8042 | ||
8043 | /* Allocate global sym .plt and .got entries, and space for global | |
8044 | sym dynamic relocs. */ | |
cec5225b | 8045 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs, |
a06ea964 NC |
8046 | info); |
8047 | ||
1419bbe5 WN |
8048 | /* Allocate global ifunc sym .plt and .got entries, and space for global |
8049 | ifunc sym dynamic relocs. */ | |
8050 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs, | |
8051 | info); | |
8052 | ||
8053 | /* Allocate .plt and .got entries, and space for local symbols. */ | |
8054 | htab_traverse (htab->loc_hash_table, | |
8055 | elfNN_aarch64_allocate_local_dynrelocs, | |
8056 | info); | |
8057 | ||
8058 | /* Allocate .plt and .got entries, and space for local ifunc symbols. */ | |
8059 | htab_traverse (htab->loc_hash_table, | |
8060 | elfNN_aarch64_allocate_local_ifunc_dynrelocs, | |
8061 | info); | |
a06ea964 NC |
8062 | |
8063 | /* For every jump slot reserved in the sgotplt, reloc_count is | |
8064 | incremented. However, when we reserve space for TLS descriptors, | |
8065 | it's not incremented, so in order to compute the space reserved | |
8066 | for them, it suffices to multiply the reloc count by the jump | |
8067 | slot size. */ | |
8068 | ||
8069 | if (htab->root.srelplt) | |
8847944f | 8070 | htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab); |
a06ea964 NC |
8071 | |
8072 | if (htab->tlsdesc_plt) | |
8073 | { | |
8074 | if (htab->root.splt->size == 0) | |
8075 | htab->root.splt->size += PLT_ENTRY_SIZE; | |
8076 | ||
8077 | htab->tlsdesc_plt = htab->root.splt->size; | |
8078 | htab->root.splt->size += PLT_TLSDESC_ENTRY_SIZE; | |
8079 | ||
8080 | /* If we're not using lazy TLS relocations, don't generate the | |
8081 | GOT entry required. */ | |
8082 | if (!(info->flags & DF_BIND_NOW)) | |
8083 | { | |
8084 | htab->dt_tlsdesc_got = htab->root.sgot->size; | |
8085 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8086 | } | |
8087 | } | |
8088 | ||
68fcca92 | 8089 | /* Init mapping symbols information to use later to distingush between |
4106101c MS |
8090 | code and data while scanning for errata. */ |
8091 | if (htab->fix_erratum_835769 || htab->fix_erratum_843419) | |
68fcca92 JW |
8092 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
8093 | { | |
8094 | if (!is_aarch64_elf (ibfd)) | |
8095 | continue; | |
8096 | bfd_elfNN_aarch64_init_maps (ibfd); | |
8097 | } | |
8098 | ||
a06ea964 NC |
8099 | /* We now have determined the sizes of the various dynamic sections. |
8100 | Allocate memory for them. */ | |
8101 | relocs = FALSE; | |
8102 | for (s = dynobj->sections; s != NULL; s = s->next) | |
8103 | { | |
8104 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
8105 | continue; | |
8106 | ||
8107 | if (s == htab->root.splt | |
8108 | || s == htab->root.sgot | |
8109 | || s == htab->root.sgotplt | |
8110 | || s == htab->root.iplt | |
8111 | || s == htab->root.igotplt || s == htab->sdynbss) | |
8112 | { | |
8113 | /* Strip this section if we don't need it; see the | |
8114 | comment below. */ | |
8115 | } | |
8116 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) | |
8117 | { | |
8118 | if (s->size != 0 && s != htab->root.srelplt) | |
8119 | relocs = TRUE; | |
8120 | ||
8121 | /* We use the reloc_count field as a counter if we need | |
8122 | to copy relocs into the output file. */ | |
8123 | if (s != htab->root.srelplt) | |
8124 | s->reloc_count = 0; | |
8125 | } | |
8126 | else | |
8127 | { | |
8128 | /* It's not one of our sections, so don't allocate space. */ | |
8129 | continue; | |
8130 | } | |
8131 | ||
8132 | if (s->size == 0) | |
8133 | { | |
8134 | /* If we don't need this section, strip it from the | |
8135 | output file. This is mostly to handle .rela.bss and | |
8136 | .rela.plt. We must create both sections in | |
8137 | create_dynamic_sections, because they must be created | |
8138 | before the linker maps input sections to output | |
8139 | sections. The linker does that before | |
8140 | adjust_dynamic_symbol is called, and it is that | |
8141 | function which decides whether anything needs to go | |
8142 | into these sections. */ | |
8143 | ||
8144 | s->flags |= SEC_EXCLUDE; | |
8145 | continue; | |
8146 | } | |
8147 | ||
8148 | if ((s->flags & SEC_HAS_CONTENTS) == 0) | |
8149 | continue; | |
8150 | ||
8151 | /* Allocate memory for the section contents. We use bfd_zalloc | |
8152 | here in case unused entries are not reclaimed before the | |
8153 | section's contents are written out. This should not happen, | |
8154 | but this way if it does, we get a R_AARCH64_NONE reloc instead | |
8155 | of garbage. */ | |
8156 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
8157 | if (s->contents == NULL) | |
8158 | return FALSE; | |
8159 | } | |
8160 | ||
8161 | if (htab->root.dynamic_sections_created) | |
8162 | { | |
8163 | /* Add some entries to the .dynamic section. We fill in the | |
cec5225b | 8164 | values later, in elfNN_aarch64_finish_dynamic_sections, but we |
a06ea964 NC |
8165 | must add the entries now so that we get the correct size for |
8166 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
8167 | dynamic linker and used by the debugger. */ | |
8168 | #define add_dynamic_entry(TAG, VAL) \ | |
8169 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
8170 | ||
0e1862bb | 8171 | if (bfd_link_executable (info)) |
a06ea964 NC |
8172 | { |
8173 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
8174 | return FALSE; | |
8175 | } | |
8176 | ||
8177 | if (htab->root.splt->size != 0) | |
8178 | { | |
8179 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
8180 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
8181 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
8182 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
8183 | return FALSE; | |
8184 | ||
8185 | if (htab->tlsdesc_plt | |
8186 | && (!add_dynamic_entry (DT_TLSDESC_PLT, 0) | |
8187 | || !add_dynamic_entry (DT_TLSDESC_GOT, 0))) | |
8188 | return FALSE; | |
8189 | } | |
8190 | ||
8191 | if (relocs) | |
8192 | { | |
8193 | if (!add_dynamic_entry (DT_RELA, 0) | |
8194 | || !add_dynamic_entry (DT_RELASZ, 0) | |
8195 | || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) | |
8196 | return FALSE; | |
8197 | ||
8198 | /* If any dynamic relocs apply to a read-only section, | |
8199 | then we need a DT_TEXTREL entry. */ | |
c2170589 JW |
8200 | if ((info->flags & DF_TEXTREL) == 0) |
8201 | elf_link_hash_traverse (& htab->root, aarch64_readonly_dynrelocs, | |
8202 | info); | |
8203 | ||
a06ea964 NC |
8204 | if ((info->flags & DF_TEXTREL) != 0) |
8205 | { | |
8206 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
8207 | return FALSE; | |
8208 | } | |
8209 | } | |
8210 | } | |
8211 | #undef add_dynamic_entry | |
8212 | ||
8213 | return TRUE; | |
a06ea964 NC |
8214 | } |
8215 | ||
8216 | static inline void | |
caed7120 YZ |
8217 | elf_aarch64_update_plt_entry (bfd *output_bfd, |
8218 | bfd_reloc_code_real_type r_type, | |
8219 | bfd_byte *plt_entry, bfd_vma value) | |
a06ea964 | 8220 | { |
caed7120 YZ |
8221 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type); |
8222 | ||
8223 | _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value); | |
a06ea964 NC |
8224 | } |
8225 | ||
8226 | static void | |
cec5225b YZ |
8227 | elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h, |
8228 | struct elf_aarch64_link_hash_table | |
1419bbe5 WN |
8229 | *htab, bfd *output_bfd, |
8230 | struct bfd_link_info *info) | |
a06ea964 NC |
8231 | { |
8232 | bfd_byte *plt_entry; | |
8233 | bfd_vma plt_index; | |
8234 | bfd_vma got_offset; | |
8235 | bfd_vma gotplt_entry_address; | |
8236 | bfd_vma plt_entry_address; | |
8237 | Elf_Internal_Rela rela; | |
8238 | bfd_byte *loc; | |
1419bbe5 WN |
8239 | asection *plt, *gotplt, *relplt; |
8240 | ||
8241 | /* When building a static executable, use .iplt, .igot.plt and | |
8242 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
8243 | if (htab->root.splt != NULL) | |
8244 | { | |
8245 | plt = htab->root.splt; | |
8246 | gotplt = htab->root.sgotplt; | |
8247 | relplt = htab->root.srelplt; | |
8248 | } | |
8249 | else | |
8250 | { | |
8251 | plt = htab->root.iplt; | |
8252 | gotplt = htab->root.igotplt; | |
8253 | relplt = htab->root.irelplt; | |
8254 | } | |
8255 | ||
8256 | /* Get the index in the procedure linkage table which | |
8257 | corresponds to this symbol. This is the index of this symbol | |
8258 | in all the symbols for which we are making plt entries. The | |
8259 | first entry in the procedure linkage table is reserved. | |
a06ea964 | 8260 | |
1419bbe5 WN |
8261 | Get the offset into the .got table of the entry that |
8262 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE | |
8263 | bytes. The first three are reserved for the dynamic linker. | |
692e2b8b | 8264 | |
1419bbe5 WN |
8265 | For static executables, we don't reserve anything. */ |
8266 | ||
8267 | if (plt == htab->root.splt) | |
8268 | { | |
8269 | plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size; | |
8270 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
8271 | } | |
8272 | else | |
8273 | { | |
8274 | plt_index = h->plt.offset / htab->plt_entry_size; | |
8275 | got_offset = plt_index * GOT_ENTRY_SIZE; | |
8276 | } | |
8277 | ||
8278 | plt_entry = plt->contents + h->plt.offset; | |
8279 | plt_entry_address = plt->output_section->vma | |
f44a1f8e | 8280 | + plt->output_offset + h->plt.offset; |
1419bbe5 WN |
8281 | gotplt_entry_address = gotplt->output_section->vma + |
8282 | gotplt->output_offset + got_offset; | |
a06ea964 NC |
8283 | |
8284 | /* Copy in the boiler-plate for the PLTn entry. */ | |
cec5225b | 8285 | memcpy (plt_entry, elfNN_aarch64_small_plt_entry, PLT_SMALL_ENTRY_SIZE); |
a06ea964 NC |
8286 | |
8287 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
8288 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 YZ |
8289 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
8290 | plt_entry, | |
8291 | PG (gotplt_entry_address) - | |
8292 | PG (plt_entry_address)); | |
a06ea964 NC |
8293 | |
8294 | /* Fill in the lo12 bits for the load from the pltgot. */ | |
caed7120 YZ |
8295 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
8296 | plt_entry + 4, | |
8297 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 | 8298 | |
9aff4b7a | 8299 | /* Fill in the lo12 bits for the add from the pltgot entry. */ |
caed7120 YZ |
8300 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
8301 | plt_entry + 8, | |
8302 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 NC |
8303 | |
8304 | /* All the GOTPLT Entries are essentially initialized to PLT0. */ | |
cec5225b | 8305 | bfd_put_NN (output_bfd, |
1419bbe5 WN |
8306 | plt->output_section->vma + plt->output_offset, |
8307 | gotplt->contents + got_offset); | |
a06ea964 | 8308 | |
a06ea964 | 8309 | rela.r_offset = gotplt_entry_address; |
1419bbe5 WN |
8310 | |
8311 | if (h->dynindx == -1 | |
0e1862bb | 8312 | || ((bfd_link_executable (info) |
1419bbe5 WN |
8313 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
8314 | && h->def_regular | |
8315 | && h->type == STT_GNU_IFUNC)) | |
8316 | { | |
8317 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
8318 | R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */ | |
8319 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
8320 | rela.r_addend = (h->root.u.def.value | |
8321 | + h->root.u.def.section->output_section->vma | |
8322 | + h->root.u.def.section->output_offset); | |
8323 | } | |
8324 | else | |
8325 | { | |
8326 | /* Fill in the entry in the .rela.plt section. */ | |
8327 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT)); | |
8328 | rela.r_addend = 0; | |
8329 | } | |
a06ea964 NC |
8330 | |
8331 | /* Compute the relocation entry to used based on PLT index and do | |
8332 | not adjust reloc_count. The reloc_count has already been adjusted | |
8333 | to account for this entry. */ | |
1419bbe5 | 8334 | loc = relplt->contents + plt_index * RELOC_SIZE (htab); |
cec5225b | 8335 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
8336 | } |
8337 | ||
8338 | /* Size sections even though they're not dynamic. We use it to setup | |
8339 | _TLS_MODULE_BASE_, if needed. */ | |
8340 | ||
8341 | static bfd_boolean | |
cec5225b | 8342 | elfNN_aarch64_always_size_sections (bfd *output_bfd, |
a06ea964 NC |
8343 | struct bfd_link_info *info) |
8344 | { | |
8345 | asection *tls_sec; | |
8346 | ||
0e1862bb | 8347 | if (bfd_link_relocatable (info)) |
a06ea964 NC |
8348 | return TRUE; |
8349 | ||
8350 | tls_sec = elf_hash_table (info)->tls_sec; | |
8351 | ||
8352 | if (tls_sec) | |
8353 | { | |
8354 | struct elf_link_hash_entry *tlsbase; | |
8355 | ||
8356 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
8357 | "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE); | |
8358 | ||
8359 | if (tlsbase) | |
8360 | { | |
8361 | struct bfd_link_hash_entry *h = NULL; | |
8362 | const struct elf_backend_data *bed = | |
8363 | get_elf_backend_data (output_bfd); | |
8364 | ||
8365 | if (!(_bfd_generic_link_add_one_symbol | |
8366 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
8367 | tls_sec, 0, NULL, FALSE, bed->collect, &h))) | |
8368 | return FALSE; | |
8369 | ||
8370 | tlsbase->type = STT_TLS; | |
8371 | tlsbase = (struct elf_link_hash_entry *) h; | |
8372 | tlsbase->def_regular = 1; | |
8373 | tlsbase->other = STV_HIDDEN; | |
8374 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
8375 | } | |
8376 | } | |
8377 | ||
8378 | return TRUE; | |
8379 | } | |
8380 | ||
8381 | /* Finish up dynamic symbol handling. We set the contents of various | |
8382 | dynamic sections here. */ | |
8383 | static bfd_boolean | |
cec5225b | 8384 | elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd, |
a06ea964 NC |
8385 | struct bfd_link_info *info, |
8386 | struct elf_link_hash_entry *h, | |
8387 | Elf_Internal_Sym *sym) | |
8388 | { | |
cec5225b YZ |
8389 | struct elf_aarch64_link_hash_table *htab; |
8390 | htab = elf_aarch64_hash_table (info); | |
a06ea964 NC |
8391 | |
8392 | if (h->plt.offset != (bfd_vma) - 1) | |
8393 | { | |
1419bbe5 WN |
8394 | asection *plt, *gotplt, *relplt; |
8395 | ||
a06ea964 NC |
8396 | /* This symbol has an entry in the procedure linkage table. Set |
8397 | it up. */ | |
8398 | ||
1419bbe5 WN |
8399 | /* When building a static executable, use .iplt, .igot.plt and |
8400 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
8401 | if (htab->root.splt != NULL) | |
8402 | { | |
8403 | plt = htab->root.splt; | |
8404 | gotplt = htab->root.sgotplt; | |
8405 | relplt = htab->root.srelplt; | |
8406 | } | |
8407 | else | |
8408 | { | |
8409 | plt = htab->root.iplt; | |
8410 | gotplt = htab->root.igotplt; | |
8411 | relplt = htab->root.irelplt; | |
8412 | } | |
8413 | ||
8414 | /* This symbol has an entry in the procedure linkage table. Set | |
8415 | it up. */ | |
8416 | if ((h->dynindx == -1 | |
0e1862bb | 8417 | && !((h->forced_local || bfd_link_executable (info)) |
1419bbe5 WN |
8418 | && h->def_regular |
8419 | && h->type == STT_GNU_IFUNC)) | |
8420 | || plt == NULL | |
8421 | || gotplt == NULL | |
8422 | || relplt == NULL) | |
a06ea964 NC |
8423 | abort (); |
8424 | ||
1419bbe5 | 8425 | elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info); |
a06ea964 NC |
8426 | if (!h->def_regular) |
8427 | { | |
8428 | /* Mark the symbol as undefined, rather than as defined in | |
46b87d49 | 8429 | the .plt section. */ |
a06ea964 | 8430 | sym->st_shndx = SHN_UNDEF; |
46b87d49 WN |
8431 | /* If the symbol is weak we need to clear the value. |
8432 | Otherwise, the PLT entry would provide a definition for | |
8433 | the symbol even if the symbol wasn't defined anywhere, | |
8434 | and so the symbol would never be NULL. Leave the value if | |
8435 | there were any relocations where pointer equality matters | |
8436 | (this is a clue for the dynamic linker, to make function | |
8437 | pointer comparisons work between an application and shared | |
8438 | library). */ | |
8439 | if (!h->ref_regular_nonweak || !h->pointer_equality_needed) | |
8440 | sym->st_value = 0; | |
a06ea964 NC |
8441 | } |
8442 | } | |
8443 | ||
8444 | if (h->got.offset != (bfd_vma) - 1 | |
cec5225b | 8445 | && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL) |
a06ea964 NC |
8446 | { |
8447 | Elf_Internal_Rela rela; | |
8448 | bfd_byte *loc; | |
8449 | ||
8450 | /* This symbol has an entry in the global offset table. Set it | |
8451 | up. */ | |
8452 | if (htab->root.sgot == NULL || htab->root.srelgot == NULL) | |
8453 | abort (); | |
8454 | ||
8455 | rela.r_offset = (htab->root.sgot->output_section->vma | |
8456 | + htab->root.sgot->output_offset | |
8457 | + (h->got.offset & ~(bfd_vma) 1)); | |
8458 | ||
49206388 WN |
8459 | if (h->def_regular |
8460 | && h->type == STT_GNU_IFUNC) | |
8461 | { | |
0e1862bb | 8462 | if (bfd_link_pic (info)) |
49206388 WN |
8463 | { |
8464 | /* Generate R_AARCH64_GLOB_DAT. */ | |
8465 | goto do_glob_dat; | |
8466 | } | |
8467 | else | |
8468 | { | |
8469 | asection *plt; | |
8470 | ||
8471 | if (!h->pointer_equality_needed) | |
8472 | abort (); | |
8473 | ||
8474 | /* For non-shared object, we can't use .got.plt, which | |
8475 | contains the real function address if we need pointer | |
8476 | equality. We load the GOT entry with the PLT entry. */ | |
8477 | plt = htab->root.splt ? htab->root.splt : htab->root.iplt; | |
8478 | bfd_put_NN (output_bfd, (plt->output_section->vma | |
8479 | + plt->output_offset | |
8480 | + h->plt.offset), | |
8481 | htab->root.sgot->contents | |
8482 | + (h->got.offset & ~(bfd_vma) 1)); | |
8483 | return TRUE; | |
8484 | } | |
8485 | } | |
0e1862bb | 8486 | else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h)) |
a06ea964 NC |
8487 | { |
8488 | if (!h->def_regular) | |
8489 | return FALSE; | |
8490 | ||
8491 | BFD_ASSERT ((h->got.offset & 1) != 0); | |
a6bb11b2 | 8492 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); |
a06ea964 NC |
8493 | rela.r_addend = (h->root.u.def.value |
8494 | + h->root.u.def.section->output_section->vma | |
8495 | + h->root.u.def.section->output_offset); | |
8496 | } | |
8497 | else | |
8498 | { | |
49206388 | 8499 | do_glob_dat: |
a06ea964 | 8500 | BFD_ASSERT ((h->got.offset & 1) == 0); |
cec5225b | 8501 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 | 8502 | htab->root.sgot->contents + h->got.offset); |
a6bb11b2 | 8503 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT)); |
a06ea964 NC |
8504 | rela.r_addend = 0; |
8505 | } | |
8506 | ||
8507 | loc = htab->root.srelgot->contents; | |
8508 | loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 8509 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
8510 | } |
8511 | ||
8512 | if (h->needs_copy) | |
8513 | { | |
8514 | Elf_Internal_Rela rela; | |
8515 | bfd_byte *loc; | |
8516 | ||
8517 | /* This symbol needs a copy reloc. Set it up. */ | |
8518 | ||
8519 | if (h->dynindx == -1 | |
8520 | || (h->root.type != bfd_link_hash_defined | |
8521 | && h->root.type != bfd_link_hash_defweak) | |
8522 | || htab->srelbss == NULL) | |
8523 | abort (); | |
8524 | ||
8525 | rela.r_offset = (h->root.u.def.value | |
8526 | + h->root.u.def.section->output_section->vma | |
8527 | + h->root.u.def.section->output_offset); | |
a6bb11b2 | 8528 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY)); |
a06ea964 NC |
8529 | rela.r_addend = 0; |
8530 | loc = htab->srelbss->contents; | |
8531 | loc += htab->srelbss->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 8532 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
8533 | } |
8534 | ||
8535 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may | |
8536 | be NULL for local symbols. */ | |
8537 | if (sym != NULL | |
9637f6ef | 8538 | && (h == elf_hash_table (info)->hdynamic |
a06ea964 NC |
8539 | || h == elf_hash_table (info)->hgot)) |
8540 | sym->st_shndx = SHN_ABS; | |
8541 | ||
8542 | return TRUE; | |
8543 | } | |
8544 | ||
1419bbe5 WN |
8545 | /* Finish up local dynamic symbol handling. We set the contents of |
8546 | various dynamic sections here. */ | |
8547 | ||
8548 | static bfd_boolean | |
8549 | elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf) | |
8550 | { | |
8551 | struct elf_link_hash_entry *h | |
8552 | = (struct elf_link_hash_entry *) *slot; | |
8553 | struct bfd_link_info *info | |
8554 | = (struct bfd_link_info *) inf; | |
8555 | ||
8556 | return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd, | |
8557 | info, h, NULL); | |
8558 | } | |
8559 | ||
a06ea964 | 8560 | static void |
cec5225b YZ |
8561 | elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED, |
8562 | struct elf_aarch64_link_hash_table | |
a06ea964 NC |
8563 | *htab) |
8564 | { | |
8565 | /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between | |
8566 | small and large plts and at the minute just generates | |
8567 | the small PLT. */ | |
8568 | ||
cec5225b | 8569 | /* PLT0 of the small PLT looks like this in ELF64 - |
a06ea964 NC |
8570 | stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack. |
8571 | adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT | |
8572 | ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the | |
8573 | // symbol resolver | |
8574 | add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the | |
8575 | // GOTPLT entry for this. | |
8576 | br x17 | |
cec5225b YZ |
8577 | PLT0 will be slightly different in ELF32 due to different got entry |
8578 | size. | |
a06ea964 | 8579 | */ |
caed7120 | 8580 | bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */ |
a06ea964 NC |
8581 | bfd_vma plt_base; |
8582 | ||
8583 | ||
cec5225b | 8584 | memcpy (htab->root.splt->contents, elfNN_aarch64_small_plt0_entry, |
a06ea964 NC |
8585 | PLT_ENTRY_SIZE); |
8586 | elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize = | |
8587 | PLT_ENTRY_SIZE; | |
8588 | ||
caed7120 YZ |
8589 | plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma |
8590 | + htab->root.sgotplt->output_offset | |
8591 | + GOT_ENTRY_SIZE * 2); | |
a06ea964 NC |
8592 | |
8593 | plt_base = htab->root.splt->output_section->vma + | |
f44a1f8e | 8594 | htab->root.splt->output_offset; |
a06ea964 NC |
8595 | |
8596 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
8597 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 YZ |
8598 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
8599 | htab->root.splt->contents + 4, | |
8600 | PG (plt_got_2nd_ent) - PG (plt_base + 4)); | |
a06ea964 | 8601 | |
caed7120 YZ |
8602 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
8603 | htab->root.splt->contents + 8, | |
8604 | PG_OFFSET (plt_got_2nd_ent)); | |
a06ea964 | 8605 | |
caed7120 YZ |
8606 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
8607 | htab->root.splt->contents + 12, | |
8608 | PG_OFFSET (plt_got_2nd_ent)); | |
a06ea964 NC |
8609 | } |
8610 | ||
8611 | static bfd_boolean | |
cec5225b | 8612 | elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd, |
a06ea964 NC |
8613 | struct bfd_link_info *info) |
8614 | { | |
cec5225b | 8615 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
8616 | bfd *dynobj; |
8617 | asection *sdyn; | |
8618 | ||
cec5225b | 8619 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
8620 | dynobj = htab->root.dynobj; |
8621 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); | |
8622 | ||
8623 | if (htab->root.dynamic_sections_created) | |
8624 | { | |
cec5225b | 8625 | ElfNN_External_Dyn *dyncon, *dynconend; |
a06ea964 NC |
8626 | |
8627 | if (sdyn == NULL || htab->root.sgot == NULL) | |
8628 | abort (); | |
8629 | ||
cec5225b YZ |
8630 | dyncon = (ElfNN_External_Dyn *) sdyn->contents; |
8631 | dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size); | |
a06ea964 NC |
8632 | for (; dyncon < dynconend; dyncon++) |
8633 | { | |
8634 | Elf_Internal_Dyn dyn; | |
8635 | asection *s; | |
8636 | ||
cec5225b | 8637 | bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn); |
a06ea964 NC |
8638 | |
8639 | switch (dyn.d_tag) | |
8640 | { | |
8641 | default: | |
8642 | continue; | |
8643 | ||
8644 | case DT_PLTGOT: | |
8645 | s = htab->root.sgotplt; | |
8646 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
8647 | break; | |
8648 | ||
8649 | case DT_JMPREL: | |
8650 | dyn.d_un.d_ptr = htab->root.srelplt->output_section->vma; | |
8651 | break; | |
8652 | ||
8653 | case DT_PLTRELSZ: | |
c955de36 | 8654 | s = htab->root.srelplt; |
a06ea964 NC |
8655 | dyn.d_un.d_val = s->size; |
8656 | break; | |
8657 | ||
8658 | case DT_RELASZ: | |
8659 | /* The procedure linkage table relocs (DT_JMPREL) should | |
8660 | not be included in the overall relocs (DT_RELA). | |
8661 | Therefore, we override the DT_RELASZ entry here to | |
8662 | make it not include the JMPREL relocs. Since the | |
8663 | linker script arranges for .rela.plt to follow all | |
8664 | other relocation sections, we don't have to worry | |
8665 | about changing the DT_RELA entry. */ | |
8666 | if (htab->root.srelplt != NULL) | |
8667 | { | |
c955de36 | 8668 | s = htab->root.srelplt; |
a06ea964 NC |
8669 | dyn.d_un.d_val -= s->size; |
8670 | } | |
8671 | break; | |
8672 | ||
8673 | case DT_TLSDESC_PLT: | |
8674 | s = htab->root.splt; | |
8675 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
8676 | + htab->tlsdesc_plt; | |
8677 | break; | |
8678 | ||
8679 | case DT_TLSDESC_GOT: | |
8680 | s = htab->root.sgot; | |
8681 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
8682 | + htab->dt_tlsdesc_got; | |
8683 | break; | |
8684 | } | |
8685 | ||
cec5225b | 8686 | bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon); |
a06ea964 NC |
8687 | } |
8688 | ||
8689 | } | |
8690 | ||
8691 | /* Fill in the special first entry in the procedure linkage table. */ | |
8692 | if (htab->root.splt && htab->root.splt->size > 0) | |
8693 | { | |
cec5225b | 8694 | elfNN_aarch64_init_small_plt0_entry (output_bfd, htab); |
a06ea964 NC |
8695 | |
8696 | elf_section_data (htab->root.splt->output_section)-> | |
8697 | this_hdr.sh_entsize = htab->plt_entry_size; | |
8698 | ||
8699 | ||
8700 | if (htab->tlsdesc_plt) | |
8701 | { | |
cec5225b | 8702 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
8703 | htab->root.sgot->contents + htab->dt_tlsdesc_got); |
8704 | ||
8705 | memcpy (htab->root.splt->contents + htab->tlsdesc_plt, | |
cec5225b YZ |
8706 | elfNN_aarch64_tlsdesc_small_plt_entry, |
8707 | sizeof (elfNN_aarch64_tlsdesc_small_plt_entry)); | |
a06ea964 NC |
8708 | |
8709 | { | |
8710 | bfd_vma adrp1_addr = | |
8711 | htab->root.splt->output_section->vma | |
8712 | + htab->root.splt->output_offset + htab->tlsdesc_plt + 4; | |
8713 | ||
caed7120 | 8714 | bfd_vma adrp2_addr = adrp1_addr + 4; |
a06ea964 NC |
8715 | |
8716 | bfd_vma got_addr = | |
8717 | htab->root.sgot->output_section->vma | |
8718 | + htab->root.sgot->output_offset; | |
8719 | ||
8720 | bfd_vma pltgot_addr = | |
8721 | htab->root.sgotplt->output_section->vma | |
8722 | + htab->root.sgotplt->output_offset; | |
8723 | ||
8724 | bfd_vma dt_tlsdesc_got = got_addr + htab->dt_tlsdesc_got; | |
caed7120 YZ |
8725 | |
8726 | bfd_byte *plt_entry = | |
8727 | htab->root.splt->contents + htab->tlsdesc_plt; | |
a06ea964 NC |
8728 | |
8729 | /* adrp x2, DT_TLSDESC_GOT */ | |
caed7120 YZ |
8730 | elf_aarch64_update_plt_entry (output_bfd, |
8731 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
8732 | plt_entry + 4, | |
8733 | (PG (dt_tlsdesc_got) | |
8734 | - PG (adrp1_addr))); | |
a06ea964 NC |
8735 | |
8736 | /* adrp x3, 0 */ | |
caed7120 YZ |
8737 | elf_aarch64_update_plt_entry (output_bfd, |
8738 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
8739 | plt_entry + 8, | |
8740 | (PG (pltgot_addr) | |
8741 | - PG (adrp2_addr))); | |
a06ea964 NC |
8742 | |
8743 | /* ldr x2, [x2, #0] */ | |
caed7120 YZ |
8744 | elf_aarch64_update_plt_entry (output_bfd, |
8745 | BFD_RELOC_AARCH64_LDSTNN_LO12, | |
8746 | plt_entry + 12, | |
8747 | PG_OFFSET (dt_tlsdesc_got)); | |
a06ea964 NC |
8748 | |
8749 | /* add x3, x3, 0 */ | |
caed7120 YZ |
8750 | elf_aarch64_update_plt_entry (output_bfd, |
8751 | BFD_RELOC_AARCH64_ADD_LO12, | |
8752 | plt_entry + 16, | |
8753 | PG_OFFSET (pltgot_addr)); | |
a06ea964 NC |
8754 | } |
8755 | } | |
8756 | } | |
8757 | ||
8758 | if (htab->root.sgotplt) | |
8759 | { | |
8760 | if (bfd_is_abs_section (htab->root.sgotplt->output_section)) | |
8761 | { | |
8762 | (*_bfd_error_handler) | |
8763 | (_("discarded output section: `%A'"), htab->root.sgotplt); | |
8764 | return FALSE; | |
8765 | } | |
8766 | ||
8767 | /* Fill in the first three entries in the global offset table. */ | |
8768 | if (htab->root.sgotplt->size > 0) | |
8769 | { | |
8db339a6 MS |
8770 | bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents); |
8771 | ||
a06ea964 | 8772 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ |
cec5225b | 8773 | bfd_put_NN (output_bfd, |
a06ea964 NC |
8774 | (bfd_vma) 0, |
8775 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE); | |
cec5225b | 8776 | bfd_put_NN (output_bfd, |
a06ea964 NC |
8777 | (bfd_vma) 0, |
8778 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2); | |
8779 | } | |
8780 | ||
8db339a6 MS |
8781 | if (htab->root.sgot) |
8782 | { | |
8783 | if (htab->root.sgot->size > 0) | |
8784 | { | |
8785 | bfd_vma addr = | |
8786 | sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0; | |
8787 | bfd_put_NN (output_bfd, addr, htab->root.sgot->contents); | |
8788 | } | |
8789 | } | |
8790 | ||
a06ea964 NC |
8791 | elf_section_data (htab->root.sgotplt->output_section)-> |
8792 | this_hdr.sh_entsize = GOT_ENTRY_SIZE; | |
8793 | } | |
8794 | ||
8795 | if (htab->root.sgot && htab->root.sgot->size > 0) | |
8796 | elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize | |
8797 | = GOT_ENTRY_SIZE; | |
8798 | ||
1419bbe5 WN |
8799 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
8800 | htab_traverse (htab->loc_hash_table, | |
8801 | elfNN_aarch64_finish_local_dynamic_symbol, | |
8802 | info); | |
8803 | ||
a06ea964 NC |
8804 | return TRUE; |
8805 | } | |
8806 | ||
8807 | /* Return address for Ith PLT stub in section PLT, for relocation REL | |
8808 | or (bfd_vma) -1 if it should not be included. */ | |
8809 | ||
8810 | static bfd_vma | |
cec5225b | 8811 | elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt, |
a06ea964 NC |
8812 | const arelent *rel ATTRIBUTE_UNUSED) |
8813 | { | |
8814 | return plt->vma + PLT_ENTRY_SIZE + i * PLT_SMALL_ENTRY_SIZE; | |
8815 | } | |
8816 | ||
8817 | ||
8818 | /* We use this so we can override certain functions | |
8819 | (though currently we don't). */ | |
8820 | ||
cec5225b | 8821 | const struct elf_size_info elfNN_aarch64_size_info = |
a06ea964 | 8822 | { |
cec5225b YZ |
8823 | sizeof (ElfNN_External_Ehdr), |
8824 | sizeof (ElfNN_External_Phdr), | |
8825 | sizeof (ElfNN_External_Shdr), | |
8826 | sizeof (ElfNN_External_Rel), | |
8827 | sizeof (ElfNN_External_Rela), | |
8828 | sizeof (ElfNN_External_Sym), | |
8829 | sizeof (ElfNN_External_Dyn), | |
a06ea964 NC |
8830 | sizeof (Elf_External_Note), |
8831 | 4, /* Hash table entry size. */ | |
8832 | 1, /* Internal relocs per external relocs. */ | |
cec5225b YZ |
8833 | ARCH_SIZE, /* Arch size. */ |
8834 | LOG_FILE_ALIGN, /* Log_file_align. */ | |
8835 | ELFCLASSNN, EV_CURRENT, | |
8836 | bfd_elfNN_write_out_phdrs, | |
8837 | bfd_elfNN_write_shdrs_and_ehdr, | |
8838 | bfd_elfNN_checksum_contents, | |
8839 | bfd_elfNN_write_relocs, | |
8840 | bfd_elfNN_swap_symbol_in, | |
8841 | bfd_elfNN_swap_symbol_out, | |
8842 | bfd_elfNN_slurp_reloc_table, | |
8843 | bfd_elfNN_slurp_symbol_table, | |
8844 | bfd_elfNN_swap_dyn_in, | |
8845 | bfd_elfNN_swap_dyn_out, | |
8846 | bfd_elfNN_swap_reloc_in, | |
8847 | bfd_elfNN_swap_reloc_out, | |
8848 | bfd_elfNN_swap_reloca_in, | |
8849 | bfd_elfNN_swap_reloca_out | |
a06ea964 NC |
8850 | }; |
8851 | ||
8852 | #define ELF_ARCH bfd_arch_aarch64 | |
8853 | #define ELF_MACHINE_CODE EM_AARCH64 | |
8854 | #define ELF_MAXPAGESIZE 0x10000 | |
8855 | #define ELF_MINPAGESIZE 0x1000 | |
8856 | #define ELF_COMMONPAGESIZE 0x1000 | |
8857 | ||
cec5225b YZ |
8858 | #define bfd_elfNN_close_and_cleanup \ |
8859 | elfNN_aarch64_close_and_cleanup | |
a06ea964 | 8860 | |
cec5225b YZ |
8861 | #define bfd_elfNN_bfd_free_cached_info \ |
8862 | elfNN_aarch64_bfd_free_cached_info | |
a06ea964 | 8863 | |
cec5225b YZ |
8864 | #define bfd_elfNN_bfd_is_target_special_symbol \ |
8865 | elfNN_aarch64_is_target_special_symbol | |
a06ea964 | 8866 | |
cec5225b YZ |
8867 | #define bfd_elfNN_bfd_link_hash_table_create \ |
8868 | elfNN_aarch64_link_hash_table_create | |
a06ea964 | 8869 | |
cec5225b YZ |
8870 | #define bfd_elfNN_bfd_merge_private_bfd_data \ |
8871 | elfNN_aarch64_merge_private_bfd_data | |
a06ea964 | 8872 | |
cec5225b YZ |
8873 | #define bfd_elfNN_bfd_print_private_bfd_data \ |
8874 | elfNN_aarch64_print_private_bfd_data | |
a06ea964 | 8875 | |
cec5225b YZ |
8876 | #define bfd_elfNN_bfd_reloc_type_lookup \ |
8877 | elfNN_aarch64_reloc_type_lookup | |
a06ea964 | 8878 | |
cec5225b YZ |
8879 | #define bfd_elfNN_bfd_reloc_name_lookup \ |
8880 | elfNN_aarch64_reloc_name_lookup | |
a06ea964 | 8881 | |
cec5225b YZ |
8882 | #define bfd_elfNN_bfd_set_private_flags \ |
8883 | elfNN_aarch64_set_private_flags | |
a06ea964 | 8884 | |
cec5225b YZ |
8885 | #define bfd_elfNN_find_inliner_info \ |
8886 | elfNN_aarch64_find_inliner_info | |
a06ea964 | 8887 | |
cec5225b YZ |
8888 | #define bfd_elfNN_find_nearest_line \ |
8889 | elfNN_aarch64_find_nearest_line | |
a06ea964 | 8890 | |
cec5225b YZ |
8891 | #define bfd_elfNN_mkobject \ |
8892 | elfNN_aarch64_mkobject | |
a06ea964 | 8893 | |
cec5225b YZ |
8894 | #define bfd_elfNN_new_section_hook \ |
8895 | elfNN_aarch64_new_section_hook | |
a06ea964 NC |
8896 | |
8897 | #define elf_backend_adjust_dynamic_symbol \ | |
cec5225b | 8898 | elfNN_aarch64_adjust_dynamic_symbol |
a06ea964 NC |
8899 | |
8900 | #define elf_backend_always_size_sections \ | |
cec5225b | 8901 | elfNN_aarch64_always_size_sections |
a06ea964 NC |
8902 | |
8903 | #define elf_backend_check_relocs \ | |
cec5225b | 8904 | elfNN_aarch64_check_relocs |
a06ea964 NC |
8905 | |
8906 | #define elf_backend_copy_indirect_symbol \ | |
cec5225b | 8907 | elfNN_aarch64_copy_indirect_symbol |
a06ea964 NC |
8908 | |
8909 | /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts | |
8910 | to them in our hash. */ | |
8911 | #define elf_backend_create_dynamic_sections \ | |
cec5225b | 8912 | elfNN_aarch64_create_dynamic_sections |
a06ea964 NC |
8913 | |
8914 | #define elf_backend_init_index_section \ | |
8915 | _bfd_elf_init_2_index_sections | |
8916 | ||
a06ea964 | 8917 | #define elf_backend_finish_dynamic_sections \ |
cec5225b | 8918 | elfNN_aarch64_finish_dynamic_sections |
a06ea964 NC |
8919 | |
8920 | #define elf_backend_finish_dynamic_symbol \ | |
cec5225b | 8921 | elfNN_aarch64_finish_dynamic_symbol |
a06ea964 NC |
8922 | |
8923 | #define elf_backend_gc_sweep_hook \ | |
cec5225b | 8924 | elfNN_aarch64_gc_sweep_hook |
a06ea964 NC |
8925 | |
8926 | #define elf_backend_object_p \ | |
cec5225b | 8927 | elfNN_aarch64_object_p |
a06ea964 NC |
8928 | |
8929 | #define elf_backend_output_arch_local_syms \ | |
cec5225b | 8930 | elfNN_aarch64_output_arch_local_syms |
a06ea964 NC |
8931 | |
8932 | #define elf_backend_plt_sym_val \ | |
cec5225b | 8933 | elfNN_aarch64_plt_sym_val |
a06ea964 NC |
8934 | |
8935 | #define elf_backend_post_process_headers \ | |
cec5225b | 8936 | elfNN_aarch64_post_process_headers |
a06ea964 NC |
8937 | |
8938 | #define elf_backend_relocate_section \ | |
cec5225b | 8939 | elfNN_aarch64_relocate_section |
a06ea964 NC |
8940 | |
8941 | #define elf_backend_reloc_type_class \ | |
cec5225b | 8942 | elfNN_aarch64_reloc_type_class |
a06ea964 | 8943 | |
a06ea964 | 8944 | #define elf_backend_section_from_shdr \ |
cec5225b | 8945 | elfNN_aarch64_section_from_shdr |
a06ea964 NC |
8946 | |
8947 | #define elf_backend_size_dynamic_sections \ | |
cec5225b | 8948 | elfNN_aarch64_size_dynamic_sections |
a06ea964 NC |
8949 | |
8950 | #define elf_backend_size_info \ | |
cec5225b | 8951 | elfNN_aarch64_size_info |
a06ea964 | 8952 | |
68fcca92 JW |
8953 | #define elf_backend_write_section \ |
8954 | elfNN_aarch64_write_section | |
8955 | ||
a06ea964 | 8956 | #define elf_backend_can_refcount 1 |
59c108f7 | 8957 | #define elf_backend_can_gc_sections 1 |
a06ea964 NC |
8958 | #define elf_backend_plt_readonly 1 |
8959 | #define elf_backend_want_got_plt 1 | |
8960 | #define elf_backend_want_plt_sym 0 | |
8961 | #define elf_backend_may_use_rel_p 0 | |
8962 | #define elf_backend_may_use_rela_p 1 | |
8963 | #define elf_backend_default_use_rela_p 1 | |
2e0488d3 | 8964 | #define elf_backend_rela_normal 1 |
a06ea964 | 8965 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3) |
c495064d | 8966 | #define elf_backend_default_execstack 0 |
32f573bc | 8967 | #define elf_backend_extern_protected_data 1 |
a06ea964 NC |
8968 | |
8969 | #undef elf_backend_obj_attrs_section | |
8970 | #define elf_backend_obj_attrs_section ".ARM.attributes" | |
8971 | ||
cec5225b | 8972 | #include "elfNN-target.h" |