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cec5225b | 1 | /* AArch64-specific support for NN-bit ELF. |
6f2750fe | 2 | Copyright (C) 2009-2016 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 \ |
3e8286c0 | 171 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \ |
1aa66fb1 | 172 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \ |
a6bb11b2 | 173 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \ |
a6bb11b2 | 174 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC \ |
4c0a9a6f | 175 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC \ |
a6bb11b2 | 176 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \ |
4c0a9a6f JW |
177 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC \ |
178 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1 \ | |
6ffe9a1b | 179 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12 \ |
40fbed84 | 180 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12 \ |
753999c1 | 181 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC \ |
73f925cc | 182 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \ |
f69e4920 | 183 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \ |
77a69ff8 | 184 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 \ |
07c9aa07 JW |
185 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12 \ |
186 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC \ | |
187 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12 \ | |
188 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC \ | |
189 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12 \ | |
190 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC \ | |
191 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12 \ | |
192 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC \ | |
6ffe9a1b JW |
193 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0 \ |
194 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC \ | |
195 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1 \ | |
196 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC \ | |
197 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2 \ | |
a6bb11b2 | 198 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 \ |
4c0a9a6f | 199 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12 \ |
a6bb11b2 | 200 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC \ |
a6bb11b2 YZ |
201 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0 \ |
202 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC \ | |
4c0a9a6f JW |
203 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 \ |
204 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC \ | |
205 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 \ | |
a6bb11b2 YZ |
206 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPMOD \ |
207 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPREL \ | |
208 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_TPREL \ | |
a06ea964 NC |
209 | || IS_AARCH64_TLSDESC_RELOC ((R_TYPE))) |
210 | ||
9331eea1 | 211 | #define IS_AARCH64_TLS_RELAX_RELOC(R_TYPE) \ |
0484b454 RL |
212 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \ |
213 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC \ | |
4af68b9c JW |
214 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \ |
215 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \ | |
216 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \ | |
217 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \ | |
218 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC \ | |
0484b454 RL |
219 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \ |
220 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \ | |
221 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1 \ | |
222 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \ | |
4af68b9c | 223 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \ |
9331eea1 JW |
224 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \ |
225 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \ | |
ac734732 RL |
226 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \ |
227 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \ | |
9331eea1 JW |
228 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \ |
229 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \ | |
230 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC \ | |
259364ad JW |
231 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \ |
232 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \ | |
4af68b9c | 233 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21) |
9331eea1 | 234 | |
a6bb11b2 | 235 | #define IS_AARCH64_TLSDESC_RELOC(R_TYPE) \ |
4c0a9a6f JW |
236 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC \ |
237 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \ | |
238 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC \ | |
a6bb11b2 | 239 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \ |
389b8029 | 240 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \ |
4c0a9a6f | 241 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \ |
a6bb11b2 | 242 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC \ |
4c0a9a6f | 243 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC \ |
a6bb11b2 | 244 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \ |
4c0a9a6f JW |
245 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \ |
246 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \ | |
247 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1) | |
a06ea964 NC |
248 | |
249 | #define ELIMINATE_COPY_RELOCS 0 | |
250 | ||
a06ea964 | 251 | /* Return size of a relocation entry. HTAB is the bfd's |
cec5225b YZ |
252 | elf_aarch64_link_hash_entry. */ |
253 | #define RELOC_SIZE(HTAB) (sizeof (ElfNN_External_Rela)) | |
a06ea964 | 254 | |
cec5225b YZ |
255 | /* GOT Entry size - 8 bytes in ELF64 and 4 bytes in ELF32. */ |
256 | #define GOT_ENTRY_SIZE (ARCH_SIZE / 8) | |
a06ea964 NC |
257 | #define PLT_ENTRY_SIZE (32) |
258 | #define PLT_SMALL_ENTRY_SIZE (16) | |
259 | #define PLT_TLSDESC_ENTRY_SIZE (32) | |
260 | ||
a06ea964 NC |
261 | /* Encoding of the nop instruction */ |
262 | #define INSN_NOP 0xd503201f | |
263 | ||
264 | #define aarch64_compute_jump_table_size(htab) \ | |
265 | (((htab)->root.srelplt == NULL) ? 0 \ | |
266 | : (htab)->root.srelplt->reloc_count * GOT_ENTRY_SIZE) | |
267 | ||
268 | /* The first entry in a procedure linkage table looks like this | |
269 | if the distance between the PLTGOT and the PLT is < 4GB use | |
270 | these PLT entries. Note that the dynamic linker gets &PLTGOT[2] | |
271 | in x16 and needs to work out PLTGOT[1] by using an address of | |
cec5225b YZ |
272 | [x16,#-GOT_ENTRY_SIZE]. */ |
273 | static const bfd_byte elfNN_aarch64_small_plt0_entry[PLT_ENTRY_SIZE] = | |
a06ea964 NC |
274 | { |
275 | 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */ | |
276 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */ | |
caed7120 | 277 | #if ARCH_SIZE == 64 |
a06ea964 NC |
278 | 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */ |
279 | 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */ | |
caed7120 YZ |
280 | #else |
281 | 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */ | |
282 | 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */ | |
283 | #endif | |
a06ea964 NC |
284 | 0x20, 0x02, 0x1f, 0xd6, /* br x17 */ |
285 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
286 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
287 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
288 | }; | |
289 | ||
290 | /* Per function entry in a procedure linkage table looks like this | |
291 | if the distance between the PLTGOT and the PLT is < 4GB use | |
292 | these PLT entries. */ | |
cec5225b | 293 | static const bfd_byte elfNN_aarch64_small_plt_entry[PLT_SMALL_ENTRY_SIZE] = |
a06ea964 NC |
294 | { |
295 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
caed7120 | 296 | #if ARCH_SIZE == 64 |
a06ea964 NC |
297 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ |
298 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
caed7120 YZ |
299 | #else |
300 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
301 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
302 | #endif | |
a06ea964 NC |
303 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ |
304 | }; | |
305 | ||
306 | static const bfd_byte | |
cec5225b | 307 | elfNN_aarch64_tlsdesc_small_plt_entry[PLT_TLSDESC_ENTRY_SIZE] = |
a06ea964 NC |
308 | { |
309 | 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */ | |
310 | 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */ | |
311 | 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */ | |
caed7120 YZ |
312 | #if ARCH_SIZE == 64 |
313 | 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */ | |
a06ea964 | 314 | 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */ |
caed7120 YZ |
315 | #else |
316 | 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */ | |
317 | 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */ | |
318 | #endif | |
319 | 0x40, 0x00, 0x1f, 0xd6, /* br x2 */ | |
a06ea964 NC |
320 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ |
321 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
322 | }; | |
323 | ||
cec5225b YZ |
324 | #define elf_info_to_howto elfNN_aarch64_info_to_howto |
325 | #define elf_info_to_howto_rel elfNN_aarch64_info_to_howto | |
a06ea964 NC |
326 | |
327 | #define AARCH64_ELF_ABI_VERSION 0 | |
a06ea964 NC |
328 | |
329 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ | |
330 | #define ALL_ONES (~ (bfd_vma) 0) | |
331 | ||
a6bb11b2 YZ |
332 | /* Indexed by the bfd interal reloc enumerators. |
333 | Therefore, the table needs to be synced with BFD_RELOC_AARCH64_* | |
334 | in reloc.c. */ | |
a06ea964 | 335 | |
a6bb11b2 | 336 | static reloc_howto_type elfNN_aarch64_howto_table[] = |
a06ea964 | 337 | { |
a6bb11b2 | 338 | EMPTY_HOWTO (0), |
a06ea964 | 339 | |
a6bb11b2 | 340 | /* Basic data relocations. */ |
a06ea964 | 341 | |
b7f28d87 JW |
342 | /* Deprecated, but retained for backwards compatibility. */ |
343 | HOWTO64 (R_AARCH64_NULL, /* type */ | |
a06ea964 | 344 | 0, /* rightshift */ |
6346d5ca | 345 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a6bb11b2 | 346 | 0, /* bitsize */ |
a06ea964 NC |
347 | FALSE, /* pc_relative */ |
348 | 0, /* bitpos */ | |
349 | complain_overflow_dont, /* complain_on_overflow */ | |
350 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 351 | "R_AARCH64_NULL", /* name */ |
a06ea964 NC |
352 | FALSE, /* partial_inplace */ |
353 | 0, /* src_mask */ | |
a6bb11b2 | 354 | 0, /* dst_mask */ |
a06ea964 | 355 | FALSE), /* pcrel_offset */ |
a6bb11b2 | 356 | HOWTO (R_AARCH64_NONE, /* type */ |
a06ea964 | 357 | 0, /* rightshift */ |
6346d5ca | 358 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a06ea964 NC |
359 | 0, /* bitsize */ |
360 | FALSE, /* pc_relative */ | |
361 | 0, /* bitpos */ | |
362 | complain_overflow_dont, /* complain_on_overflow */ | |
363 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 364 | "R_AARCH64_NONE", /* name */ |
a06ea964 NC |
365 | FALSE, /* partial_inplace */ |
366 | 0, /* src_mask */ | |
367 | 0, /* dst_mask */ | |
368 | FALSE), /* pcrel_offset */ | |
369 | ||
370 | /* .xword: (S+A) */ | |
a6bb11b2 | 371 | HOWTO64 (AARCH64_R (ABS64), /* type */ |
a06ea964 NC |
372 | 0, /* rightshift */ |
373 | 4, /* size (4 = long long) */ | |
374 | 64, /* bitsize */ | |
375 | FALSE, /* pc_relative */ | |
376 | 0, /* bitpos */ | |
377 | complain_overflow_unsigned, /* complain_on_overflow */ | |
378 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 379 | AARCH64_R_STR (ABS64), /* name */ |
a06ea964 NC |
380 | FALSE, /* partial_inplace */ |
381 | ALL_ONES, /* src_mask */ | |
382 | ALL_ONES, /* dst_mask */ | |
383 | FALSE), /* pcrel_offset */ | |
384 | ||
385 | /* .word: (S+A) */ | |
a6bb11b2 | 386 | HOWTO (AARCH64_R (ABS32), /* type */ |
a06ea964 NC |
387 | 0, /* rightshift */ |
388 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
389 | 32, /* bitsize */ | |
390 | FALSE, /* pc_relative */ | |
391 | 0, /* bitpos */ | |
392 | complain_overflow_unsigned, /* complain_on_overflow */ | |
393 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 394 | AARCH64_R_STR (ABS32), /* name */ |
a06ea964 NC |
395 | FALSE, /* partial_inplace */ |
396 | 0xffffffff, /* src_mask */ | |
397 | 0xffffffff, /* dst_mask */ | |
398 | FALSE), /* pcrel_offset */ | |
399 | ||
400 | /* .half: (S+A) */ | |
a6bb11b2 | 401 | HOWTO (AARCH64_R (ABS16), /* type */ |
a06ea964 NC |
402 | 0, /* rightshift */ |
403 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
404 | 16, /* bitsize */ | |
405 | FALSE, /* pc_relative */ | |
406 | 0, /* bitpos */ | |
407 | complain_overflow_unsigned, /* complain_on_overflow */ | |
408 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 409 | AARCH64_R_STR (ABS16), /* name */ |
a06ea964 NC |
410 | FALSE, /* partial_inplace */ |
411 | 0xffff, /* src_mask */ | |
412 | 0xffff, /* dst_mask */ | |
413 | FALSE), /* pcrel_offset */ | |
414 | ||
415 | /* .xword: (S+A-P) */ | |
a6bb11b2 | 416 | HOWTO64 (AARCH64_R (PREL64), /* type */ |
a06ea964 NC |
417 | 0, /* rightshift */ |
418 | 4, /* size (4 = long long) */ | |
419 | 64, /* bitsize */ | |
420 | TRUE, /* pc_relative */ | |
421 | 0, /* bitpos */ | |
422 | complain_overflow_signed, /* complain_on_overflow */ | |
423 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 424 | AARCH64_R_STR (PREL64), /* name */ |
a06ea964 NC |
425 | FALSE, /* partial_inplace */ |
426 | ALL_ONES, /* src_mask */ | |
427 | ALL_ONES, /* dst_mask */ | |
428 | TRUE), /* pcrel_offset */ | |
429 | ||
430 | /* .word: (S+A-P) */ | |
a6bb11b2 | 431 | HOWTO (AARCH64_R (PREL32), /* type */ |
a06ea964 NC |
432 | 0, /* rightshift */ |
433 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
434 | 32, /* bitsize */ | |
435 | TRUE, /* pc_relative */ | |
436 | 0, /* bitpos */ | |
437 | complain_overflow_signed, /* complain_on_overflow */ | |
438 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 439 | AARCH64_R_STR (PREL32), /* name */ |
a06ea964 NC |
440 | FALSE, /* partial_inplace */ |
441 | 0xffffffff, /* src_mask */ | |
442 | 0xffffffff, /* dst_mask */ | |
443 | TRUE), /* pcrel_offset */ | |
444 | ||
445 | /* .half: (S+A-P) */ | |
a6bb11b2 | 446 | HOWTO (AARCH64_R (PREL16), /* type */ |
a06ea964 NC |
447 | 0, /* rightshift */ |
448 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
449 | 16, /* bitsize */ | |
450 | TRUE, /* pc_relative */ | |
451 | 0, /* bitpos */ | |
452 | complain_overflow_signed, /* complain_on_overflow */ | |
453 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 454 | AARCH64_R_STR (PREL16), /* name */ |
a06ea964 NC |
455 | FALSE, /* partial_inplace */ |
456 | 0xffff, /* src_mask */ | |
457 | 0xffff, /* dst_mask */ | |
458 | TRUE), /* pcrel_offset */ | |
459 | ||
460 | /* Group relocations to create a 16, 32, 48 or 64 bit | |
461 | unsigned data or abs address inline. */ | |
462 | ||
463 | /* MOVZ: ((S+A) >> 0) & 0xffff */ | |
a6bb11b2 | 464 | HOWTO (AARCH64_R (MOVW_UABS_G0), /* type */ |
a06ea964 NC |
465 | 0, /* rightshift */ |
466 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
467 | 16, /* bitsize */ | |
468 | FALSE, /* pc_relative */ | |
469 | 0, /* bitpos */ | |
470 | complain_overflow_unsigned, /* complain_on_overflow */ | |
471 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 472 | AARCH64_R_STR (MOVW_UABS_G0), /* name */ |
a06ea964 NC |
473 | FALSE, /* partial_inplace */ |
474 | 0xffff, /* src_mask */ | |
475 | 0xffff, /* dst_mask */ | |
476 | FALSE), /* pcrel_offset */ | |
477 | ||
478 | /* MOVK: ((S+A) >> 0) & 0xffff [no overflow check] */ | |
a6bb11b2 | 479 | HOWTO (AARCH64_R (MOVW_UABS_G0_NC), /* type */ |
a06ea964 NC |
480 | 0, /* rightshift */ |
481 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
482 | 16, /* bitsize */ | |
483 | FALSE, /* pc_relative */ | |
484 | 0, /* bitpos */ | |
485 | complain_overflow_dont, /* complain_on_overflow */ | |
486 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 487 | AARCH64_R_STR (MOVW_UABS_G0_NC), /* name */ |
a06ea964 NC |
488 | FALSE, /* partial_inplace */ |
489 | 0xffff, /* src_mask */ | |
490 | 0xffff, /* dst_mask */ | |
491 | FALSE), /* pcrel_offset */ | |
492 | ||
493 | /* MOVZ: ((S+A) >> 16) & 0xffff */ | |
a6bb11b2 | 494 | HOWTO (AARCH64_R (MOVW_UABS_G1), /* type */ |
a06ea964 NC |
495 | 16, /* rightshift */ |
496 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
497 | 16, /* bitsize */ | |
498 | FALSE, /* pc_relative */ | |
499 | 0, /* bitpos */ | |
500 | complain_overflow_unsigned, /* complain_on_overflow */ | |
501 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 502 | AARCH64_R_STR (MOVW_UABS_G1), /* name */ |
a06ea964 NC |
503 | FALSE, /* partial_inplace */ |
504 | 0xffff, /* src_mask */ | |
505 | 0xffff, /* dst_mask */ | |
506 | FALSE), /* pcrel_offset */ | |
507 | ||
508 | /* MOVK: ((S+A) >> 16) & 0xffff [no overflow check] */ | |
a6bb11b2 | 509 | HOWTO64 (AARCH64_R (MOVW_UABS_G1_NC), /* type */ |
a06ea964 NC |
510 | 16, /* rightshift */ |
511 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
512 | 16, /* bitsize */ | |
513 | FALSE, /* pc_relative */ | |
514 | 0, /* bitpos */ | |
515 | complain_overflow_dont, /* complain_on_overflow */ | |
516 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 517 | AARCH64_R_STR (MOVW_UABS_G1_NC), /* name */ |
a06ea964 NC |
518 | FALSE, /* partial_inplace */ |
519 | 0xffff, /* src_mask */ | |
520 | 0xffff, /* dst_mask */ | |
521 | FALSE), /* pcrel_offset */ | |
522 | ||
523 | /* MOVZ: ((S+A) >> 32) & 0xffff */ | |
a6bb11b2 | 524 | HOWTO64 (AARCH64_R (MOVW_UABS_G2), /* type */ |
a06ea964 NC |
525 | 32, /* rightshift */ |
526 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
527 | 16, /* bitsize */ | |
528 | FALSE, /* pc_relative */ | |
529 | 0, /* bitpos */ | |
530 | complain_overflow_unsigned, /* complain_on_overflow */ | |
531 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 532 | AARCH64_R_STR (MOVW_UABS_G2), /* name */ |
a06ea964 NC |
533 | FALSE, /* partial_inplace */ |
534 | 0xffff, /* src_mask */ | |
535 | 0xffff, /* dst_mask */ | |
536 | FALSE), /* pcrel_offset */ | |
537 | ||
538 | /* MOVK: ((S+A) >> 32) & 0xffff [no overflow check] */ | |
a6bb11b2 | 539 | HOWTO64 (AARCH64_R (MOVW_UABS_G2_NC), /* type */ |
a06ea964 NC |
540 | 32, /* rightshift */ |
541 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
542 | 16, /* bitsize */ | |
543 | FALSE, /* pc_relative */ | |
544 | 0, /* bitpos */ | |
545 | complain_overflow_dont, /* complain_on_overflow */ | |
546 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 547 | AARCH64_R_STR (MOVW_UABS_G2_NC), /* name */ |
a06ea964 NC |
548 | FALSE, /* partial_inplace */ |
549 | 0xffff, /* src_mask */ | |
550 | 0xffff, /* dst_mask */ | |
551 | FALSE), /* pcrel_offset */ | |
552 | ||
553 | /* MOVZ: ((S+A) >> 48) & 0xffff */ | |
a6bb11b2 | 554 | HOWTO64 (AARCH64_R (MOVW_UABS_G3), /* type */ |
a06ea964 NC |
555 | 48, /* rightshift */ |
556 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
557 | 16, /* bitsize */ | |
558 | FALSE, /* pc_relative */ | |
559 | 0, /* bitpos */ | |
560 | complain_overflow_unsigned, /* complain_on_overflow */ | |
561 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 562 | AARCH64_R_STR (MOVW_UABS_G3), /* name */ |
a06ea964 NC |
563 | FALSE, /* partial_inplace */ |
564 | 0xffff, /* src_mask */ | |
565 | 0xffff, /* dst_mask */ | |
566 | FALSE), /* pcrel_offset */ | |
567 | ||
568 | /* Group relocations to create high part of a 16, 32, 48 or 64 bit | |
569 | signed data or abs address inline. Will change instruction | |
570 | to MOVN or MOVZ depending on sign of calculated value. */ | |
571 | ||
572 | /* MOV[ZN]: ((S+A) >> 0) & 0xffff */ | |
a6bb11b2 | 573 | HOWTO (AARCH64_R (MOVW_SABS_G0), /* type */ |
a06ea964 NC |
574 | 0, /* rightshift */ |
575 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c5e3a364 | 576 | 17, /* bitsize */ |
a06ea964 NC |
577 | FALSE, /* pc_relative */ |
578 | 0, /* bitpos */ | |
579 | complain_overflow_signed, /* complain_on_overflow */ | |
580 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 581 | AARCH64_R_STR (MOVW_SABS_G0), /* name */ |
a06ea964 NC |
582 | FALSE, /* partial_inplace */ |
583 | 0xffff, /* src_mask */ | |
584 | 0xffff, /* dst_mask */ | |
585 | FALSE), /* pcrel_offset */ | |
586 | ||
587 | /* MOV[ZN]: ((S+A) >> 16) & 0xffff */ | |
a6bb11b2 | 588 | HOWTO64 (AARCH64_R (MOVW_SABS_G1), /* type */ |
a06ea964 NC |
589 | 16, /* rightshift */ |
590 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c5e3a364 | 591 | 17, /* bitsize */ |
a06ea964 NC |
592 | FALSE, /* pc_relative */ |
593 | 0, /* bitpos */ | |
594 | complain_overflow_signed, /* complain_on_overflow */ | |
595 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 596 | AARCH64_R_STR (MOVW_SABS_G1), /* name */ |
a06ea964 NC |
597 | FALSE, /* partial_inplace */ |
598 | 0xffff, /* src_mask */ | |
599 | 0xffff, /* dst_mask */ | |
600 | FALSE), /* pcrel_offset */ | |
601 | ||
602 | /* MOV[ZN]: ((S+A) >> 32) & 0xffff */ | |
a6bb11b2 | 603 | HOWTO64 (AARCH64_R (MOVW_SABS_G2), /* type */ |
a06ea964 NC |
604 | 32, /* rightshift */ |
605 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c5e3a364 | 606 | 17, /* bitsize */ |
a06ea964 NC |
607 | FALSE, /* pc_relative */ |
608 | 0, /* bitpos */ | |
609 | complain_overflow_signed, /* complain_on_overflow */ | |
610 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 611 | AARCH64_R_STR (MOVW_SABS_G2), /* name */ |
a06ea964 NC |
612 | FALSE, /* partial_inplace */ |
613 | 0xffff, /* src_mask */ | |
614 | 0xffff, /* dst_mask */ | |
615 | FALSE), /* pcrel_offset */ | |
616 | ||
617 | /* Relocations to generate 19, 21 and 33 bit PC-relative load/store | |
618 | addresses: PG(x) is (x & ~0xfff). */ | |
619 | ||
620 | /* LD-lit: ((S+A-P) >> 2) & 0x7ffff */ | |
a6bb11b2 | 621 | HOWTO (AARCH64_R (LD_PREL_LO19), /* type */ |
a06ea964 NC |
622 | 2, /* rightshift */ |
623 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
624 | 19, /* bitsize */ | |
625 | TRUE, /* pc_relative */ | |
626 | 0, /* bitpos */ | |
627 | complain_overflow_signed, /* complain_on_overflow */ | |
628 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 629 | AARCH64_R_STR (LD_PREL_LO19), /* name */ |
a06ea964 NC |
630 | FALSE, /* partial_inplace */ |
631 | 0x7ffff, /* src_mask */ | |
632 | 0x7ffff, /* dst_mask */ | |
633 | TRUE), /* pcrel_offset */ | |
634 | ||
635 | /* ADR: (S+A-P) & 0x1fffff */ | |
a6bb11b2 | 636 | HOWTO (AARCH64_R (ADR_PREL_LO21), /* type */ |
a06ea964 NC |
637 | 0, /* rightshift */ |
638 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
639 | 21, /* bitsize */ | |
640 | TRUE, /* pc_relative */ | |
641 | 0, /* bitpos */ | |
642 | complain_overflow_signed, /* complain_on_overflow */ | |
643 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 644 | AARCH64_R_STR (ADR_PREL_LO21), /* name */ |
a06ea964 NC |
645 | FALSE, /* partial_inplace */ |
646 | 0x1fffff, /* src_mask */ | |
647 | 0x1fffff, /* dst_mask */ | |
648 | TRUE), /* pcrel_offset */ | |
649 | ||
650 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
a6bb11b2 | 651 | HOWTO (AARCH64_R (ADR_PREL_PG_HI21), /* type */ |
a06ea964 NC |
652 | 12, /* rightshift */ |
653 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
654 | 21, /* bitsize */ | |
655 | TRUE, /* pc_relative */ | |
656 | 0, /* bitpos */ | |
657 | complain_overflow_signed, /* complain_on_overflow */ | |
658 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 659 | AARCH64_R_STR (ADR_PREL_PG_HI21), /* name */ |
a06ea964 NC |
660 | FALSE, /* partial_inplace */ |
661 | 0x1fffff, /* src_mask */ | |
662 | 0x1fffff, /* dst_mask */ | |
663 | TRUE), /* pcrel_offset */ | |
664 | ||
665 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff [no overflow check] */ | |
a6bb11b2 | 666 | HOWTO64 (AARCH64_R (ADR_PREL_PG_HI21_NC), /* type */ |
a06ea964 NC |
667 | 12, /* rightshift */ |
668 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
669 | 21, /* bitsize */ | |
670 | TRUE, /* pc_relative */ | |
671 | 0, /* bitpos */ | |
672 | complain_overflow_dont, /* complain_on_overflow */ | |
673 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 674 | AARCH64_R_STR (ADR_PREL_PG_HI21_NC), /* name */ |
a06ea964 NC |
675 | FALSE, /* partial_inplace */ |
676 | 0x1fffff, /* src_mask */ | |
677 | 0x1fffff, /* dst_mask */ | |
678 | TRUE), /* pcrel_offset */ | |
679 | ||
680 | /* ADD: (S+A) & 0xfff [no overflow check] */ | |
a6bb11b2 | 681 | HOWTO (AARCH64_R (ADD_ABS_LO12_NC), /* type */ |
a06ea964 NC |
682 | 0, /* rightshift */ |
683 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
684 | 12, /* bitsize */ | |
685 | FALSE, /* pc_relative */ | |
686 | 10, /* bitpos */ | |
687 | complain_overflow_dont, /* complain_on_overflow */ | |
688 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 689 | AARCH64_R_STR (ADD_ABS_LO12_NC), /* name */ |
a06ea964 NC |
690 | FALSE, /* partial_inplace */ |
691 | 0x3ffc00, /* src_mask */ | |
692 | 0x3ffc00, /* dst_mask */ | |
693 | FALSE), /* pcrel_offset */ | |
694 | ||
695 | /* LD/ST8: (S+A) & 0xfff */ | |
a6bb11b2 | 696 | HOWTO (AARCH64_R (LDST8_ABS_LO12_NC), /* type */ |
a06ea964 NC |
697 | 0, /* rightshift */ |
698 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
699 | 12, /* bitsize */ | |
700 | FALSE, /* pc_relative */ | |
701 | 0, /* bitpos */ | |
702 | complain_overflow_dont, /* complain_on_overflow */ | |
703 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 704 | AARCH64_R_STR (LDST8_ABS_LO12_NC), /* name */ |
a06ea964 NC |
705 | FALSE, /* partial_inplace */ |
706 | 0xfff, /* src_mask */ | |
707 | 0xfff, /* dst_mask */ | |
708 | FALSE), /* pcrel_offset */ | |
709 | ||
710 | /* Relocations for control-flow instructions. */ | |
711 | ||
712 | /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */ | |
a6bb11b2 | 713 | HOWTO (AARCH64_R (TSTBR14), /* type */ |
a06ea964 NC |
714 | 2, /* rightshift */ |
715 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
716 | 14, /* bitsize */ | |
717 | TRUE, /* pc_relative */ | |
718 | 0, /* bitpos */ | |
719 | complain_overflow_signed, /* complain_on_overflow */ | |
720 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 721 | AARCH64_R_STR (TSTBR14), /* name */ |
a06ea964 NC |
722 | FALSE, /* partial_inplace */ |
723 | 0x3fff, /* src_mask */ | |
724 | 0x3fff, /* dst_mask */ | |
725 | TRUE), /* pcrel_offset */ | |
726 | ||
727 | /* B.cond: ((S+A-P) >> 2) & 0x7ffff */ | |
a6bb11b2 | 728 | HOWTO (AARCH64_R (CONDBR19), /* type */ |
a06ea964 NC |
729 | 2, /* rightshift */ |
730 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
731 | 19, /* bitsize */ | |
732 | TRUE, /* pc_relative */ | |
733 | 0, /* bitpos */ | |
734 | complain_overflow_signed, /* complain_on_overflow */ | |
735 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 736 | AARCH64_R_STR (CONDBR19), /* name */ |
a06ea964 NC |
737 | FALSE, /* partial_inplace */ |
738 | 0x7ffff, /* src_mask */ | |
739 | 0x7ffff, /* dst_mask */ | |
740 | TRUE), /* pcrel_offset */ | |
741 | ||
a06ea964 | 742 | /* B: ((S+A-P) >> 2) & 0x3ffffff */ |
a6bb11b2 | 743 | HOWTO (AARCH64_R (JUMP26), /* type */ |
a06ea964 NC |
744 | 2, /* rightshift */ |
745 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
746 | 26, /* bitsize */ | |
747 | TRUE, /* pc_relative */ | |
748 | 0, /* bitpos */ | |
749 | complain_overflow_signed, /* complain_on_overflow */ | |
750 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 751 | AARCH64_R_STR (JUMP26), /* name */ |
a06ea964 NC |
752 | FALSE, /* partial_inplace */ |
753 | 0x3ffffff, /* src_mask */ | |
754 | 0x3ffffff, /* dst_mask */ | |
755 | TRUE), /* pcrel_offset */ | |
756 | ||
757 | /* BL: ((S+A-P) >> 2) & 0x3ffffff */ | |
a6bb11b2 | 758 | HOWTO (AARCH64_R (CALL26), /* type */ |
a06ea964 NC |
759 | 2, /* rightshift */ |
760 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
761 | 26, /* bitsize */ | |
762 | TRUE, /* pc_relative */ | |
763 | 0, /* bitpos */ | |
764 | complain_overflow_signed, /* complain_on_overflow */ | |
765 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 766 | AARCH64_R_STR (CALL26), /* name */ |
a06ea964 NC |
767 | FALSE, /* partial_inplace */ |
768 | 0x3ffffff, /* src_mask */ | |
769 | 0x3ffffff, /* dst_mask */ | |
770 | TRUE), /* pcrel_offset */ | |
771 | ||
772 | /* LD/ST16: (S+A) & 0xffe */ | |
a6bb11b2 | 773 | HOWTO (AARCH64_R (LDST16_ABS_LO12_NC), /* type */ |
a06ea964 NC |
774 | 1, /* rightshift */ |
775 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
776 | 12, /* bitsize */ | |
777 | FALSE, /* pc_relative */ | |
778 | 0, /* bitpos */ | |
779 | complain_overflow_dont, /* complain_on_overflow */ | |
780 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 781 | AARCH64_R_STR (LDST16_ABS_LO12_NC), /* name */ |
a06ea964 NC |
782 | FALSE, /* partial_inplace */ |
783 | 0xffe, /* src_mask */ | |
784 | 0xffe, /* dst_mask */ | |
785 | FALSE), /* pcrel_offset */ | |
786 | ||
787 | /* LD/ST32: (S+A) & 0xffc */ | |
a6bb11b2 | 788 | HOWTO (AARCH64_R (LDST32_ABS_LO12_NC), /* type */ |
a06ea964 NC |
789 | 2, /* rightshift */ |
790 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
791 | 12, /* bitsize */ | |
792 | FALSE, /* pc_relative */ | |
793 | 0, /* bitpos */ | |
794 | complain_overflow_dont, /* complain_on_overflow */ | |
795 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 796 | AARCH64_R_STR (LDST32_ABS_LO12_NC), /* name */ |
a06ea964 NC |
797 | FALSE, /* partial_inplace */ |
798 | 0xffc, /* src_mask */ | |
799 | 0xffc, /* dst_mask */ | |
800 | FALSE), /* pcrel_offset */ | |
801 | ||
802 | /* LD/ST64: (S+A) & 0xff8 */ | |
a6bb11b2 | 803 | HOWTO (AARCH64_R (LDST64_ABS_LO12_NC), /* type */ |
a06ea964 NC |
804 | 3, /* rightshift */ |
805 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
806 | 12, /* bitsize */ | |
807 | FALSE, /* pc_relative */ | |
808 | 0, /* bitpos */ | |
809 | complain_overflow_dont, /* complain_on_overflow */ | |
810 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 811 | AARCH64_R_STR (LDST64_ABS_LO12_NC), /* name */ |
a06ea964 NC |
812 | FALSE, /* partial_inplace */ |
813 | 0xff8, /* src_mask */ | |
814 | 0xff8, /* dst_mask */ | |
815 | FALSE), /* pcrel_offset */ | |
816 | ||
a06ea964 | 817 | /* LD/ST128: (S+A) & 0xff0 */ |
a6bb11b2 | 818 | HOWTO (AARCH64_R (LDST128_ABS_LO12_NC), /* type */ |
a06ea964 NC |
819 | 4, /* rightshift */ |
820 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
821 | 12, /* bitsize */ | |
822 | FALSE, /* pc_relative */ | |
823 | 0, /* bitpos */ | |
824 | complain_overflow_dont, /* complain_on_overflow */ | |
825 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 826 | AARCH64_R_STR (LDST128_ABS_LO12_NC), /* name */ |
a06ea964 NC |
827 | FALSE, /* partial_inplace */ |
828 | 0xff0, /* src_mask */ | |
829 | 0xff0, /* dst_mask */ | |
830 | FALSE), /* pcrel_offset */ | |
831 | ||
f41aef5f RE |
832 | /* Set a load-literal immediate field to bits |
833 | 0x1FFFFC of G(S)-P */ | |
a6bb11b2 | 834 | HOWTO (AARCH64_R (GOT_LD_PREL19), /* type */ |
f41aef5f RE |
835 | 2, /* rightshift */ |
836 | 2, /* size (0 = byte,1 = short,2 = long) */ | |
837 | 19, /* bitsize */ | |
838 | TRUE, /* pc_relative */ | |
839 | 0, /* bitpos */ | |
840 | complain_overflow_signed, /* complain_on_overflow */ | |
841 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 842 | AARCH64_R_STR (GOT_LD_PREL19), /* name */ |
f41aef5f RE |
843 | FALSE, /* partial_inplace */ |
844 | 0xffffe0, /* src_mask */ | |
845 | 0xffffe0, /* dst_mask */ | |
846 | TRUE), /* pcrel_offset */ | |
847 | ||
a06ea964 NC |
848 | /* Get to the page for the GOT entry for the symbol |
849 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 850 | HOWTO (AARCH64_R (ADR_GOT_PAGE), /* type */ |
a06ea964 NC |
851 | 12, /* rightshift */ |
852 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
853 | 21, /* bitsize */ | |
854 | TRUE, /* pc_relative */ | |
855 | 0, /* bitpos */ | |
856 | complain_overflow_dont, /* complain_on_overflow */ | |
857 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 858 | AARCH64_R_STR (ADR_GOT_PAGE), /* name */ |
a06ea964 NC |
859 | FALSE, /* partial_inplace */ |
860 | 0x1fffff, /* src_mask */ | |
861 | 0x1fffff, /* dst_mask */ | |
862 | TRUE), /* pcrel_offset */ | |
863 | ||
a6bb11b2 YZ |
864 | /* LD64: GOT offset G(S) & 0xff8 */ |
865 | HOWTO64 (AARCH64_R (LD64_GOT_LO12_NC), /* type */ | |
a06ea964 NC |
866 | 3, /* rightshift */ |
867 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
868 | 12, /* bitsize */ | |
869 | FALSE, /* pc_relative */ | |
870 | 0, /* bitpos */ | |
871 | complain_overflow_dont, /* complain_on_overflow */ | |
872 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 873 | AARCH64_R_STR (LD64_GOT_LO12_NC), /* name */ |
a06ea964 NC |
874 | FALSE, /* partial_inplace */ |
875 | 0xff8, /* src_mask */ | |
876 | 0xff8, /* dst_mask */ | |
a6bb11b2 | 877 | FALSE), /* pcrel_offset */ |
a06ea964 | 878 | |
a6bb11b2 YZ |
879 | /* LD32: GOT offset G(S) & 0xffc */ |
880 | HOWTO32 (AARCH64_R (LD32_GOT_LO12_NC), /* type */ | |
881 | 2, /* rightshift */ | |
882 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
883 | 12, /* bitsize */ | |
884 | FALSE, /* pc_relative */ | |
885 | 0, /* bitpos */ | |
886 | complain_overflow_dont, /* complain_on_overflow */ | |
887 | bfd_elf_generic_reloc, /* special_function */ | |
888 | AARCH64_R_STR (LD32_GOT_LO12_NC), /* name */ | |
889 | FALSE, /* partial_inplace */ | |
890 | 0xffc, /* src_mask */ | |
891 | 0xffc, /* dst_mask */ | |
892 | FALSE), /* pcrel_offset */ | |
a06ea964 | 893 | |
ca632371 RL |
894 | /* Lower 16 bits of GOT offset for the symbol. */ |
895 | HOWTO64 (AARCH64_R (MOVW_GOTOFF_G0_NC), /* type */ | |
896 | 0, /* rightshift */ | |
897 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
898 | 16, /* bitsize */ | |
899 | FALSE, /* pc_relative */ | |
900 | 0, /* bitpos */ | |
901 | complain_overflow_dont, /* complain_on_overflow */ | |
902 | bfd_elf_generic_reloc, /* special_function */ | |
903 | AARCH64_R_STR (MOVW_GOTOFF_G0_NC), /* name */ | |
904 | FALSE, /* partial_inplace */ | |
905 | 0xffff, /* src_mask */ | |
906 | 0xffff, /* dst_mask */ | |
907 | FALSE), /* pcrel_offset */ | |
908 | ||
654248e7 RL |
909 | /* Higher 16 bits of GOT offset for the symbol. */ |
910 | HOWTO64 (AARCH64_R (MOVW_GOTOFF_G1), /* type */ | |
911 | 16, /* rightshift */ | |
912 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
913 | 16, /* bitsize */ | |
914 | FALSE, /* pc_relative */ | |
915 | 0, /* bitpos */ | |
916 | complain_overflow_unsigned, /* complain_on_overflow */ | |
917 | bfd_elf_generic_reloc, /* special_function */ | |
918 | AARCH64_R_STR (MOVW_GOTOFF_G1), /* name */ | |
919 | FALSE, /* partial_inplace */ | |
920 | 0xffff, /* src_mask */ | |
921 | 0xffff, /* dst_mask */ | |
922 | FALSE), /* pcrel_offset */ | |
923 | ||
87f5fbcc RL |
924 | /* LD64: GOT offset for the symbol. */ |
925 | HOWTO64 (AARCH64_R (LD64_GOTOFF_LO15), /* type */ | |
926 | 3, /* rightshift */ | |
927 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
928 | 12, /* bitsize */ | |
929 | FALSE, /* pc_relative */ | |
930 | 0, /* bitpos */ | |
931 | complain_overflow_unsigned, /* complain_on_overflow */ | |
932 | bfd_elf_generic_reloc, /* special_function */ | |
933 | AARCH64_R_STR (LD64_GOTOFF_LO15), /* name */ | |
934 | FALSE, /* partial_inplace */ | |
935 | 0x7ff8, /* src_mask */ | |
936 | 0x7ff8, /* dst_mask */ | |
937 | FALSE), /* pcrel_offset */ | |
938 | ||
3d715ce4 JW |
939 | /* LD32: GOT offset to the page address of GOT table. |
940 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x5ffc. */ | |
941 | HOWTO32 (AARCH64_R (LD32_GOTPAGE_LO14), /* type */ | |
942 | 2, /* rightshift */ | |
943 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
944 | 12, /* bitsize */ | |
945 | FALSE, /* pc_relative */ | |
946 | 0, /* bitpos */ | |
947 | complain_overflow_unsigned, /* complain_on_overflow */ | |
948 | bfd_elf_generic_reloc, /* special_function */ | |
949 | AARCH64_R_STR (LD32_GOTPAGE_LO14), /* name */ | |
950 | FALSE, /* partial_inplace */ | |
951 | 0x5ffc, /* src_mask */ | |
952 | 0x5ffc, /* dst_mask */ | |
953 | FALSE), /* pcrel_offset */ | |
954 | ||
a921b5bd JW |
955 | /* LD64: GOT offset to the page address of GOT table. |
956 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */ | |
957 | HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15), /* type */ | |
958 | 3, /* rightshift */ | |
959 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
960 | 12, /* bitsize */ | |
961 | FALSE, /* pc_relative */ | |
962 | 0, /* bitpos */ | |
963 | complain_overflow_unsigned, /* complain_on_overflow */ | |
964 | bfd_elf_generic_reloc, /* special_function */ | |
965 | AARCH64_R_STR (LD64_GOTPAGE_LO15), /* name */ | |
966 | FALSE, /* partial_inplace */ | |
967 | 0x7ff8, /* src_mask */ | |
968 | 0x7ff8, /* dst_mask */ | |
969 | FALSE), /* pcrel_offset */ | |
970 | ||
a06ea964 NC |
971 | /* Get to the page for the GOT entry for the symbol |
972 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 973 | HOWTO (AARCH64_R (TLSGD_ADR_PAGE21), /* type */ |
a06ea964 NC |
974 | 12, /* rightshift */ |
975 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
976 | 21, /* bitsize */ | |
977 | TRUE, /* pc_relative */ | |
978 | 0, /* bitpos */ | |
979 | complain_overflow_dont, /* complain_on_overflow */ | |
980 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 981 | AARCH64_R_STR (TLSGD_ADR_PAGE21), /* name */ |
a06ea964 NC |
982 | FALSE, /* partial_inplace */ |
983 | 0x1fffff, /* src_mask */ | |
984 | 0x1fffff, /* dst_mask */ | |
985 | TRUE), /* pcrel_offset */ | |
986 | ||
3c12b054 MS |
987 | HOWTO (AARCH64_R (TLSGD_ADR_PREL21), /* type */ |
988 | 0, /* rightshift */ | |
989 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
990 | 21, /* bitsize */ | |
991 | TRUE, /* pc_relative */ | |
992 | 0, /* bitpos */ | |
993 | complain_overflow_dont, /* complain_on_overflow */ | |
994 | bfd_elf_generic_reloc, /* special_function */ | |
995 | AARCH64_R_STR (TLSGD_ADR_PREL21), /* name */ | |
996 | FALSE, /* partial_inplace */ | |
997 | 0x1fffff, /* src_mask */ | |
998 | 0x1fffff, /* dst_mask */ | |
999 | TRUE), /* pcrel_offset */ | |
1000 | ||
a06ea964 | 1001 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ |
a6bb11b2 | 1002 | HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC), /* type */ |
a06ea964 NC |
1003 | 0, /* rightshift */ |
1004 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1005 | 12, /* bitsize */ | |
1006 | FALSE, /* pc_relative */ | |
1007 | 0, /* bitpos */ | |
1008 | complain_overflow_dont, /* complain_on_overflow */ | |
1009 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1010 | AARCH64_R_STR (TLSGD_ADD_LO12_NC), /* name */ |
a06ea964 NC |
1011 | FALSE, /* partial_inplace */ |
1012 | 0xfff, /* src_mask */ | |
1013 | 0xfff, /* dst_mask */ | |
1014 | FALSE), /* pcrel_offset */ | |
1015 | ||
3e8286c0 RL |
1016 | /* Lower 16 bits of GOT offset to tls_index. */ |
1017 | HOWTO64 (AARCH64_R (TLSGD_MOVW_G0_NC), /* type */ | |
1018 | 0, /* rightshift */ | |
1019 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1020 | 16, /* bitsize */ | |
1021 | FALSE, /* pc_relative */ | |
1022 | 0, /* bitpos */ | |
1023 | complain_overflow_dont, /* complain_on_overflow */ | |
1024 | bfd_elf_generic_reloc, /* special_function */ | |
1025 | AARCH64_R_STR (TLSGD_MOVW_G0_NC), /* name */ | |
1026 | FALSE, /* partial_inplace */ | |
1027 | 0xffff, /* src_mask */ | |
1028 | 0xffff, /* dst_mask */ | |
1029 | FALSE), /* pcrel_offset */ | |
1030 | ||
1aa66fb1 RL |
1031 | /* Higher 16 bits of GOT offset to tls_index. */ |
1032 | HOWTO64 (AARCH64_R (TLSGD_MOVW_G1), /* type */ | |
1033 | 16, /* rightshift */ | |
1034 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1035 | 16, /* bitsize */ | |
1036 | FALSE, /* pc_relative */ | |
1037 | 0, /* bitpos */ | |
1038 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1039 | bfd_elf_generic_reloc, /* special_function */ | |
1040 | AARCH64_R_STR (TLSGD_MOVW_G1), /* name */ | |
1041 | FALSE, /* partial_inplace */ | |
1042 | 0xffff, /* src_mask */ | |
1043 | 0xffff, /* dst_mask */ | |
1044 | FALSE), /* pcrel_offset */ | |
1045 | ||
a6bb11b2 | 1046 | HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21), /* type */ |
a06ea964 NC |
1047 | 12, /* rightshift */ |
1048 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1049 | 21, /* bitsize */ | |
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_ADR_GOTTPREL_PAGE21), /* name */ |
a06ea964 NC |
1055 | FALSE, /* partial_inplace */ |
1056 | 0x1fffff, /* src_mask */ | |
1057 | 0x1fffff, /* dst_mask */ | |
1058 | FALSE), /* pcrel_offset */ | |
1059 | ||
a6bb11b2 | 1060 | HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC), /* type */ |
a06ea964 NC |
1061 | 3, /* rightshift */ |
1062 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1063 | 12, /* bitsize */ | |
1064 | FALSE, /* pc_relative */ | |
1065 | 0, /* bitpos */ | |
1066 | complain_overflow_dont, /* complain_on_overflow */ | |
1067 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1068 | AARCH64_R_STR (TLSIE_LD64_GOTTPREL_LO12_NC), /* name */ |
a06ea964 NC |
1069 | FALSE, /* partial_inplace */ |
1070 | 0xff8, /* src_mask */ | |
1071 | 0xff8, /* dst_mask */ | |
1072 | FALSE), /* pcrel_offset */ | |
1073 | ||
a6bb11b2 YZ |
1074 | HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC), /* type */ |
1075 | 2, /* rightshift */ | |
1076 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1077 | 12, /* bitsize */ | |
1078 | FALSE, /* pc_relative */ | |
1079 | 0, /* bitpos */ | |
1080 | complain_overflow_dont, /* complain_on_overflow */ | |
1081 | bfd_elf_generic_reloc, /* special_function */ | |
1082 | AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC), /* name */ | |
1083 | FALSE, /* partial_inplace */ | |
1084 | 0xffc, /* src_mask */ | |
1085 | 0xffc, /* dst_mask */ | |
1086 | FALSE), /* pcrel_offset */ | |
1087 | ||
1088 | HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19), /* type */ | |
bb3f9ed8 | 1089 | 2, /* rightshift */ |
a06ea964 | 1090 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
043bf05a | 1091 | 19, /* bitsize */ |
a06ea964 NC |
1092 | FALSE, /* pc_relative */ |
1093 | 0, /* bitpos */ | |
1094 | complain_overflow_dont, /* complain_on_overflow */ | |
1095 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1096 | AARCH64_R_STR (TLSIE_LD_GOTTPREL_PREL19), /* name */ |
a06ea964 NC |
1097 | FALSE, /* partial_inplace */ |
1098 | 0x1ffffc, /* src_mask */ | |
1099 | 0x1ffffc, /* dst_mask */ | |
1100 | FALSE), /* pcrel_offset */ | |
1101 | ||
3b957e5b RL |
1102 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */ |
1103 | 0, /* rightshift */ | |
1104 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1105 | 16, /* bitsize */ | |
1106 | FALSE, /* pc_relative */ | |
1107 | 0, /* bitpos */ | |
1108 | complain_overflow_dont, /* complain_on_overflow */ | |
1109 | bfd_elf_generic_reloc, /* special_function */ | |
1110 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC), /* name */ | |
1111 | FALSE, /* partial_inplace */ | |
1112 | 0xffff, /* src_mask */ | |
1113 | 0xffff, /* dst_mask */ | |
1114 | FALSE), /* pcrel_offset */ | |
1115 | ||
1116 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1), /* type */ | |
1117 | 16, /* rightshift */ | |
1118 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1119 | 16, /* bitsize */ | |
1120 | FALSE, /* pc_relative */ | |
1121 | 0, /* bitpos */ | |
1122 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1123 | bfd_elf_generic_reloc, /* special_function */ | |
1124 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1), /* name */ | |
1125 | FALSE, /* partial_inplace */ | |
1126 | 0xffff, /* src_mask */ | |
1127 | 0xffff, /* dst_mask */ | |
1128 | FALSE), /* pcrel_offset */ | |
1129 | ||
49df5539 JW |
1130 | /* ADD: bit[23:12] of byte offset to module TLS base address. */ |
1131 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_HI12), /* type */ | |
1132 | 12, /* rightshift */ | |
1133 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1134 | 12, /* bitsize */ | |
1135 | FALSE, /* pc_relative */ | |
1136 | 0, /* bitpos */ | |
1137 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1138 | bfd_elf_generic_reloc, /* special_function */ | |
1139 | AARCH64_R_STR (TLSLD_ADD_DTPREL_HI12), /* name */ | |
1140 | FALSE, /* partial_inplace */ | |
1141 | 0xfff, /* src_mask */ | |
1142 | 0xfff, /* dst_mask */ | |
1143 | FALSE), /* pcrel_offset */ | |
1144 | ||
70151fb5 JW |
1145 | /* Unsigned 12 bit byte offset to module TLS base address. */ |
1146 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12), /* type */ | |
1147 | 0, /* rightshift */ | |
1148 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1149 | 12, /* bitsize */ | |
1150 | FALSE, /* pc_relative */ | |
1151 | 0, /* bitpos */ | |
1152 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1153 | bfd_elf_generic_reloc, /* special_function */ | |
1154 | AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12), /* name */ | |
1155 | FALSE, /* partial_inplace */ | |
1156 | 0xfff, /* src_mask */ | |
1157 | 0xfff, /* dst_mask */ | |
1158 | FALSE), /* pcrel_offset */ | |
13289c10 JW |
1159 | |
1160 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12. */ | |
1161 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12_NC), /* type */ | |
1162 | 0, /* rightshift */ | |
1163 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1164 | 12, /* bitsize */ | |
1165 | FALSE, /* pc_relative */ | |
1166 | 0, /* bitpos */ | |
1167 | complain_overflow_dont, /* complain_on_overflow */ | |
1168 | bfd_elf_generic_reloc, /* special_function */ | |
1169 | AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12_NC), /* name */ | |
1170 | FALSE, /* partial_inplace */ | |
1171 | 0xfff, /* src_mask */ | |
1172 | 0xfff, /* dst_mask */ | |
1173 | FALSE), /* pcrel_offset */ | |
70151fb5 | 1174 | |
a12fad50 JW |
1175 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ |
1176 | HOWTO (AARCH64_R (TLSLD_ADD_LO12_NC), /* type */ | |
1177 | 0, /* rightshift */ | |
1178 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1179 | 12, /* bitsize */ | |
1180 | FALSE, /* pc_relative */ | |
1181 | 0, /* bitpos */ | |
1182 | complain_overflow_dont, /* complain_on_overflow */ | |
1183 | bfd_elf_generic_reloc, /* special_function */ | |
1184 | AARCH64_R_STR (TLSLD_ADD_LO12_NC), /* name */ | |
1185 | FALSE, /* partial_inplace */ | |
1186 | 0xfff, /* src_mask */ | |
1187 | 0xfff, /* dst_mask */ | |
1188 | FALSE), /* pcrel_offset */ | |
1189 | ||
1107e076 JW |
1190 | /* Get to the page for the GOT entry for the symbol |
1191 | (G(S) - P) using an ADRP instruction. */ | |
1192 | HOWTO (AARCH64_R (TLSLD_ADR_PAGE21), /* type */ | |
1193 | 12, /* rightshift */ | |
1194 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1195 | 21, /* bitsize */ | |
1196 | TRUE, /* pc_relative */ | |
1197 | 0, /* bitpos */ | |
1198 | complain_overflow_signed, /* complain_on_overflow */ | |
1199 | bfd_elf_generic_reloc, /* special_function */ | |
1200 | AARCH64_R_STR (TLSLD_ADR_PAGE21), /* name */ | |
1201 | FALSE, /* partial_inplace */ | |
1202 | 0x1fffff, /* src_mask */ | |
1203 | 0x1fffff, /* dst_mask */ | |
1204 | TRUE), /* pcrel_offset */ | |
1205 | ||
6c37fedc JW |
1206 | HOWTO (AARCH64_R (TLSLD_ADR_PREL21), /* type */ |
1207 | 0, /* rightshift */ | |
1208 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1209 | 21, /* bitsize */ | |
1210 | TRUE, /* pc_relative */ | |
1211 | 0, /* bitpos */ | |
1212 | complain_overflow_signed, /* complain_on_overflow */ | |
1213 | bfd_elf_generic_reloc, /* special_function */ | |
1214 | AARCH64_R_STR (TLSLD_ADR_PREL21), /* name */ | |
1215 | FALSE, /* partial_inplace */ | |
1216 | 0x1fffff, /* src_mask */ | |
1217 | 0x1fffff, /* dst_mask */ | |
1218 | TRUE), /* pcrel_offset */ | |
1219 | ||
4c562523 JW |
1220 | /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */ |
1221 | HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12), /* type */ | |
1222 | 1, /* rightshift */ | |
1223 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1224 | 11, /* bitsize */ | |
1225 | FALSE, /* pc_relative */ | |
1226 | 10, /* bitpos */ | |
1227 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1228 | bfd_elf_generic_reloc, /* special_function */ | |
1229 | AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12), /* name */ | |
1230 | FALSE, /* partial_inplace */ | |
1231 | 0x1ffc00, /* src_mask */ | |
1232 | 0x1ffc00, /* dst_mask */ | |
1233 | FALSE), /* pcrel_offset */ | |
1234 | ||
1235 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12, but no overflow check. */ | |
1236 | HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12_NC), /* type */ | |
1237 | 1, /* rightshift */ | |
1238 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1239 | 11, /* bitsize */ | |
1240 | FALSE, /* pc_relative */ | |
1241 | 10, /* bitpos */ | |
1242 | complain_overflow_dont, /* complain_on_overflow */ | |
1243 | bfd_elf_generic_reloc, /* special_function */ | |
1244 | AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12_NC), /* name */ | |
1245 | FALSE, /* partial_inplace */ | |
1246 | 0x1ffc00, /* src_mask */ | |
1247 | 0x1ffc00, /* dst_mask */ | |
1248 | FALSE), /* pcrel_offset */ | |
1249 | ||
1250 | /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */ | |
1251 | HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12), /* type */ | |
1252 | 2, /* rightshift */ | |
1253 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1254 | 10, /* bitsize */ | |
1255 | FALSE, /* pc_relative */ | |
1256 | 10, /* bitpos */ | |
1257 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1258 | bfd_elf_generic_reloc, /* special_function */ | |
1259 | AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12), /* name */ | |
1260 | FALSE, /* partial_inplace */ | |
1261 | 0x3ffc00, /* src_mask */ | |
1262 | 0x3ffc00, /* dst_mask */ | |
1263 | FALSE), /* pcrel_offset */ | |
1264 | ||
1265 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12, but no overflow check. */ | |
1266 | HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12_NC), /* type */ | |
1267 | 2, /* rightshift */ | |
1268 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1269 | 10, /* bitsize */ | |
1270 | FALSE, /* pc_relative */ | |
1271 | 10, /* bitpos */ | |
1272 | complain_overflow_dont, /* complain_on_overflow */ | |
1273 | bfd_elf_generic_reloc, /* special_function */ | |
1274 | AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12_NC), /* name */ | |
1275 | FALSE, /* partial_inplace */ | |
1276 | 0xffc00, /* src_mask */ | |
1277 | 0xffc00, /* dst_mask */ | |
1278 | FALSE), /* pcrel_offset */ | |
1279 | ||
1280 | /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */ | |
1281 | HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12), /* type */ | |
1282 | 3, /* rightshift */ | |
1283 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1284 | 9, /* bitsize */ | |
1285 | FALSE, /* pc_relative */ | |
1286 | 10, /* bitpos */ | |
1287 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1288 | bfd_elf_generic_reloc, /* special_function */ | |
1289 | AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12), /* name */ | |
1290 | FALSE, /* partial_inplace */ | |
1291 | 0x3ffc00, /* src_mask */ | |
1292 | 0x3ffc00, /* dst_mask */ | |
1293 | FALSE), /* pcrel_offset */ | |
1294 | ||
1295 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12, but no overflow check. */ | |
1296 | HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12_NC), /* type */ | |
1297 | 3, /* rightshift */ | |
1298 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1299 | 9, /* bitsize */ | |
1300 | FALSE, /* pc_relative */ | |
1301 | 10, /* bitpos */ | |
1302 | complain_overflow_dont, /* complain_on_overflow */ | |
1303 | bfd_elf_generic_reloc, /* special_function */ | |
1304 | AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12_NC), /* name */ | |
1305 | FALSE, /* partial_inplace */ | |
1306 | 0x7fc00, /* src_mask */ | |
1307 | 0x7fc00, /* dst_mask */ | |
1308 | FALSE), /* pcrel_offset */ | |
1309 | ||
1310 | /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */ | |
1311 | HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12), /* type */ | |
1312 | 0, /* rightshift */ | |
1313 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1314 | 12, /* bitsize */ | |
1315 | FALSE, /* pc_relative */ | |
1316 | 10, /* bitpos */ | |
1317 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1318 | bfd_elf_generic_reloc, /* special_function */ | |
1319 | AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12), /* name */ | |
1320 | FALSE, /* partial_inplace */ | |
1321 | 0x3ffc00, /* src_mask */ | |
1322 | 0x3ffc00, /* dst_mask */ | |
1323 | FALSE), /* pcrel_offset */ | |
1324 | ||
1325 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12, but no overflow check. */ | |
1326 | HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12_NC), /* type */ | |
1327 | 0, /* rightshift */ | |
1328 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1329 | 12, /* bitsize */ | |
1330 | FALSE, /* pc_relative */ | |
1331 | 10, /* bitpos */ | |
1332 | complain_overflow_dont, /* complain_on_overflow */ | |
1333 | bfd_elf_generic_reloc, /* special_function */ | |
1334 | AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12_NC), /* name */ | |
1335 | FALSE, /* partial_inplace */ | |
1336 | 0x3ffc00, /* src_mask */ | |
1337 | 0x3ffc00, /* dst_mask */ | |
1338 | FALSE), /* pcrel_offset */ | |
1339 | ||
49df5539 JW |
1340 | /* MOVZ: bit[15:0] of byte offset to module TLS base address. */ |
1341 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0), /* type */ | |
1342 | 0, /* rightshift */ | |
1343 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1344 | 16, /* bitsize */ | |
1345 | FALSE, /* pc_relative */ | |
1346 | 0, /* bitpos */ | |
1347 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1348 | bfd_elf_generic_reloc, /* special_function */ | |
1349 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0), /* name */ | |
1350 | FALSE, /* partial_inplace */ | |
1351 | 0xffff, /* src_mask */ | |
1352 | 0xffff, /* dst_mask */ | |
1353 | FALSE), /* pcrel_offset */ | |
1354 | ||
1355 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0. */ | |
1356 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0_NC), /* type */ | |
1357 | 0, /* rightshift */ | |
1358 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1359 | 16, /* bitsize */ | |
1360 | FALSE, /* pc_relative */ | |
1361 | 0, /* bitpos */ | |
1362 | complain_overflow_dont, /* complain_on_overflow */ | |
1363 | bfd_elf_generic_reloc, /* special_function */ | |
1364 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0_NC), /* name */ | |
1365 | FALSE, /* partial_inplace */ | |
1366 | 0xffff, /* src_mask */ | |
1367 | 0xffff, /* dst_mask */ | |
1368 | FALSE), /* pcrel_offset */ | |
1369 | ||
1370 | /* MOVZ: bit[31:16] of byte offset to module TLS base address. */ | |
1371 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G1), /* type */ | |
1372 | 16, /* rightshift */ | |
1373 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1374 | 16, /* bitsize */ | |
1375 | FALSE, /* pc_relative */ | |
1376 | 0, /* bitpos */ | |
1377 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1378 | bfd_elf_generic_reloc, /* special_function */ | |
1379 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1), /* name */ | |
1380 | FALSE, /* partial_inplace */ | |
1381 | 0xffff, /* src_mask */ | |
1382 | 0xffff, /* dst_mask */ | |
1383 | FALSE), /* pcrel_offset */ | |
1384 | ||
1385 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1. */ | |
1386 | HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G1_NC), /* type */ | |
1387 | 16, /* rightshift */ | |
1388 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1389 | 16, /* bitsize */ | |
1390 | FALSE, /* pc_relative */ | |
1391 | 0, /* bitpos */ | |
1392 | complain_overflow_dont, /* complain_on_overflow */ | |
1393 | bfd_elf_generic_reloc, /* special_function */ | |
1394 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1_NC), /* name */ | |
1395 | FALSE, /* partial_inplace */ | |
1396 | 0xffff, /* src_mask */ | |
1397 | 0xffff, /* dst_mask */ | |
1398 | FALSE), /* pcrel_offset */ | |
1399 | ||
1400 | /* MOVZ: bit[47:32] of byte offset to module TLS base address. */ | |
1401 | HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G2), /* type */ | |
1402 | 32, /* rightshift */ | |
1403 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1404 | 16, /* bitsize */ | |
1405 | FALSE, /* pc_relative */ | |
1406 | 0, /* bitpos */ | |
1407 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1408 | bfd_elf_generic_reloc, /* special_function */ | |
1409 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G2), /* name */ | |
1410 | FALSE, /* partial_inplace */ | |
1411 | 0xffff, /* src_mask */ | |
1412 | 0xffff, /* dst_mask */ | |
1413 | FALSE), /* pcrel_offset */ | |
1414 | ||
a6bb11b2 | 1415 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2), /* type */ |
bb3f9ed8 | 1416 | 32, /* rightshift */ |
a06ea964 | 1417 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1418 | 16, /* bitsize */ |
a06ea964 NC |
1419 | FALSE, /* pc_relative */ |
1420 | 0, /* bitpos */ | |
0172429c | 1421 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1422 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1423 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G2), /* name */ |
a06ea964 NC |
1424 | FALSE, /* partial_inplace */ |
1425 | 0xffff, /* src_mask */ | |
1426 | 0xffff, /* dst_mask */ | |
1427 | FALSE), /* pcrel_offset */ | |
1428 | ||
a6bb11b2 | 1429 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1), /* type */ |
bb3f9ed8 | 1430 | 16, /* rightshift */ |
a06ea964 | 1431 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1432 | 16, /* bitsize */ |
a06ea964 NC |
1433 | FALSE, /* pc_relative */ |
1434 | 0, /* bitpos */ | |
1435 | complain_overflow_dont, /* complain_on_overflow */ | |
1436 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1437 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1), /* name */ |
a06ea964 NC |
1438 | FALSE, /* partial_inplace */ |
1439 | 0xffff, /* src_mask */ | |
1440 | 0xffff, /* dst_mask */ | |
1441 | FALSE), /* pcrel_offset */ | |
1442 | ||
a6bb11b2 | 1443 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */ |
bb3f9ed8 | 1444 | 16, /* rightshift */ |
a06ea964 | 1445 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1446 | 16, /* bitsize */ |
a06ea964 NC |
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_MOVW_TPREL_G1_NC), /* name */ |
a06ea964 NC |
1452 | FALSE, /* partial_inplace */ |
1453 | 0xffff, /* src_mask */ | |
1454 | 0xffff, /* dst_mask */ | |
1455 | FALSE), /* pcrel_offset */ | |
1456 | ||
a6bb11b2 | 1457 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0), /* type */ |
a06ea964 NC |
1458 | 0, /* rightshift */ |
1459 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
07875fbc | 1460 | 16, /* bitsize */ |
a06ea964 NC |
1461 | FALSE, /* pc_relative */ |
1462 | 0, /* bitpos */ | |
1463 | complain_overflow_dont, /* complain_on_overflow */ | |
1464 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1465 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0), /* name */ |
a06ea964 NC |
1466 | FALSE, /* partial_inplace */ |
1467 | 0xffff, /* src_mask */ | |
1468 | 0xffff, /* dst_mask */ | |
1469 | FALSE), /* pcrel_offset */ | |
1470 | ||
a6bb11b2 | 1471 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC), /* type */ |
a06ea964 NC |
1472 | 0, /* rightshift */ |
1473 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
07875fbc | 1474 | 16, /* bitsize */ |
a06ea964 NC |
1475 | FALSE, /* pc_relative */ |
1476 | 0, /* bitpos */ | |
1477 | complain_overflow_dont, /* complain_on_overflow */ | |
1478 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1479 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC), /* name */ |
a06ea964 NC |
1480 | FALSE, /* partial_inplace */ |
1481 | 0xffff, /* src_mask */ | |
1482 | 0xffff, /* dst_mask */ | |
1483 | FALSE), /* pcrel_offset */ | |
1484 | ||
a6bb11b2 | 1485 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12), /* type */ |
bb3f9ed8 | 1486 | 12, /* rightshift */ |
a06ea964 NC |
1487 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1488 | 12, /* bitsize */ | |
1489 | FALSE, /* pc_relative */ | |
1490 | 0, /* bitpos */ | |
bab91cce | 1491 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1492 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1493 | AARCH64_R_STR (TLSLE_ADD_TPREL_HI12), /* name */ |
a06ea964 NC |
1494 | FALSE, /* partial_inplace */ |
1495 | 0xfff, /* src_mask */ | |
1496 | 0xfff, /* dst_mask */ | |
1497 | FALSE), /* pcrel_offset */ | |
1498 | ||
a6bb11b2 | 1499 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12), /* type */ |
a06ea964 NC |
1500 | 0, /* rightshift */ |
1501 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1502 | 12, /* bitsize */ | |
1503 | FALSE, /* pc_relative */ | |
1504 | 0, /* bitpos */ | |
36e6c140 | 1505 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1506 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1507 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12), /* name */ |
a06ea964 NC |
1508 | FALSE, /* partial_inplace */ |
1509 | 0xfff, /* src_mask */ | |
1510 | 0xfff, /* dst_mask */ | |
1511 | FALSE), /* pcrel_offset */ | |
1512 | ||
a6bb11b2 | 1513 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC), /* type */ |
a06ea964 NC |
1514 | 0, /* rightshift */ |
1515 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1516 | 12, /* bitsize */ | |
1517 | FALSE, /* pc_relative */ | |
1518 | 0, /* bitpos */ | |
1519 | complain_overflow_dont, /* complain_on_overflow */ | |
1520 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1521 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC), /* name */ |
a06ea964 NC |
1522 | FALSE, /* partial_inplace */ |
1523 | 0xfff, /* src_mask */ | |
1524 | 0xfff, /* dst_mask */ | |
1525 | FALSE), /* pcrel_offset */ | |
a06ea964 | 1526 | |
a6bb11b2 | 1527 | HOWTO (AARCH64_R (TLSDESC_LD_PREL19), /* type */ |
bb3f9ed8 | 1528 | 2, /* rightshift */ |
a06ea964 | 1529 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1ada945d | 1530 | 19, /* bitsize */ |
a06ea964 NC |
1531 | TRUE, /* pc_relative */ |
1532 | 0, /* bitpos */ | |
1533 | complain_overflow_dont, /* complain_on_overflow */ | |
1534 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1535 | AARCH64_R_STR (TLSDESC_LD_PREL19), /* name */ |
a06ea964 | 1536 | FALSE, /* partial_inplace */ |
1ada945d MS |
1537 | 0x0ffffe0, /* src_mask */ |
1538 | 0x0ffffe0, /* dst_mask */ | |
a06ea964 NC |
1539 | TRUE), /* pcrel_offset */ |
1540 | ||
a6bb11b2 | 1541 | HOWTO (AARCH64_R (TLSDESC_ADR_PREL21), /* type */ |
a06ea964 NC |
1542 | 0, /* rightshift */ |
1543 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1544 | 21, /* bitsize */ | |
1545 | TRUE, /* pc_relative */ | |
1546 | 0, /* bitpos */ | |
1547 | complain_overflow_dont, /* complain_on_overflow */ | |
1548 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1549 | AARCH64_R_STR (TLSDESC_ADR_PREL21), /* name */ |
a06ea964 NC |
1550 | FALSE, /* partial_inplace */ |
1551 | 0x1fffff, /* src_mask */ | |
1552 | 0x1fffff, /* dst_mask */ | |
1553 | TRUE), /* pcrel_offset */ | |
1554 | ||
1555 | /* Get to the page for the GOT entry for the symbol | |
1556 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 1557 | HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21), /* type */ |
a06ea964 NC |
1558 | 12, /* rightshift */ |
1559 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1560 | 21, /* bitsize */ | |
1561 | TRUE, /* pc_relative */ | |
1562 | 0, /* bitpos */ | |
1563 | complain_overflow_dont, /* complain_on_overflow */ | |
1564 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1565 | AARCH64_R_STR (TLSDESC_ADR_PAGE21), /* name */ |
a06ea964 NC |
1566 | FALSE, /* partial_inplace */ |
1567 | 0x1fffff, /* src_mask */ | |
1568 | 0x1fffff, /* dst_mask */ | |
1569 | TRUE), /* pcrel_offset */ | |
1570 | ||
a6bb11b2 YZ |
1571 | /* LD64: GOT offset G(S) & 0xff8. */ |
1572 | HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12_NC), /* type */ | |
a06ea964 NC |
1573 | 3, /* rightshift */ |
1574 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1575 | 12, /* bitsize */ | |
1576 | FALSE, /* pc_relative */ | |
1577 | 0, /* bitpos */ | |
1578 | complain_overflow_dont, /* complain_on_overflow */ | |
1579 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1580 | AARCH64_R_STR (TLSDESC_LD64_LO12_NC), /* name */ |
a06ea964 | 1581 | FALSE, /* partial_inplace */ |
a6bb11b2 YZ |
1582 | 0xff8, /* src_mask */ |
1583 | 0xff8, /* dst_mask */ | |
1584 | FALSE), /* pcrel_offset */ | |
1585 | ||
1586 | /* LD32: GOT offset G(S) & 0xffc. */ | |
1587 | HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC), /* type */ | |
1588 | 2, /* rightshift */ | |
1589 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1590 | 12, /* bitsize */ | |
1591 | FALSE, /* pc_relative */ | |
1592 | 0, /* bitpos */ | |
1593 | complain_overflow_dont, /* complain_on_overflow */ | |
1594 | bfd_elf_generic_reloc, /* special_function */ | |
1595 | AARCH64_R_STR (TLSDESC_LD32_LO12_NC), /* name */ | |
1596 | FALSE, /* partial_inplace */ | |
1597 | 0xffc, /* src_mask */ | |
1598 | 0xffc, /* dst_mask */ | |
a06ea964 NC |
1599 | FALSE), /* pcrel_offset */ |
1600 | ||
1601 | /* ADD: GOT offset G(S) & 0xfff. */ | |
a6bb11b2 | 1602 | HOWTO (AARCH64_R (TLSDESC_ADD_LO12_NC), /* type */ |
a06ea964 NC |
1603 | 0, /* rightshift */ |
1604 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1605 | 12, /* bitsize */ | |
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_ADD_LO12_NC), /* name */ |
a06ea964 NC |
1611 | FALSE, /* partial_inplace */ |
1612 | 0xfff, /* src_mask */ | |
1613 | 0xfff, /* dst_mask */ | |
1614 | FALSE), /* pcrel_offset */ | |
1615 | ||
a6bb11b2 | 1616 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G1), /* type */ |
bb3f9ed8 | 1617 | 16, /* rightshift */ |
a06ea964 NC |
1618 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1619 | 12, /* bitsize */ | |
1620 | FALSE, /* pc_relative */ | |
1621 | 0, /* bitpos */ | |
43a357f9 | 1622 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1623 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1624 | AARCH64_R_STR (TLSDESC_OFF_G1), /* name */ |
a06ea964 NC |
1625 | FALSE, /* partial_inplace */ |
1626 | 0xffff, /* src_mask */ | |
1627 | 0xffff, /* dst_mask */ | |
1628 | FALSE), /* pcrel_offset */ | |
1629 | ||
a6bb11b2 | 1630 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC), /* type */ |
a06ea964 NC |
1631 | 0, /* rightshift */ |
1632 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1633 | 12, /* bitsize */ | |
1634 | FALSE, /* pc_relative */ | |
1635 | 0, /* bitpos */ | |
1636 | complain_overflow_dont, /* complain_on_overflow */ | |
1637 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1638 | AARCH64_R_STR (TLSDESC_OFF_G0_NC), /* name */ |
a06ea964 NC |
1639 | FALSE, /* partial_inplace */ |
1640 | 0xffff, /* src_mask */ | |
1641 | 0xffff, /* dst_mask */ | |
1642 | FALSE), /* pcrel_offset */ | |
1643 | ||
a6bb11b2 | 1644 | HOWTO64 (AARCH64_R (TLSDESC_LDR), /* type */ |
a06ea964 NC |
1645 | 0, /* rightshift */ |
1646 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1647 | 12, /* bitsize */ | |
1648 | FALSE, /* pc_relative */ | |
1649 | 0, /* bitpos */ | |
1650 | complain_overflow_dont, /* complain_on_overflow */ | |
1651 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1652 | AARCH64_R_STR (TLSDESC_LDR), /* name */ |
a06ea964 NC |
1653 | FALSE, /* partial_inplace */ |
1654 | 0x0, /* src_mask */ | |
1655 | 0x0, /* dst_mask */ | |
1656 | FALSE), /* pcrel_offset */ | |
1657 | ||
a6bb11b2 | 1658 | HOWTO64 (AARCH64_R (TLSDESC_ADD), /* type */ |
a06ea964 NC |
1659 | 0, /* rightshift */ |
1660 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1661 | 12, /* bitsize */ | |
1662 | FALSE, /* pc_relative */ | |
1663 | 0, /* bitpos */ | |
1664 | complain_overflow_dont, /* complain_on_overflow */ | |
1665 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1666 | AARCH64_R_STR (TLSDESC_ADD), /* name */ |
a06ea964 NC |
1667 | FALSE, /* partial_inplace */ |
1668 | 0x0, /* src_mask */ | |
1669 | 0x0, /* dst_mask */ | |
1670 | FALSE), /* pcrel_offset */ | |
1671 | ||
a6bb11b2 | 1672 | HOWTO (AARCH64_R (TLSDESC_CALL), /* type */ |
a06ea964 NC |
1673 | 0, /* rightshift */ |
1674 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
7366006f | 1675 | 0, /* bitsize */ |
a06ea964 NC |
1676 | FALSE, /* pc_relative */ |
1677 | 0, /* bitpos */ | |
1678 | complain_overflow_dont, /* complain_on_overflow */ | |
1679 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1680 | AARCH64_R_STR (TLSDESC_CALL), /* name */ |
a06ea964 NC |
1681 | FALSE, /* partial_inplace */ |
1682 | 0x0, /* src_mask */ | |
1683 | 0x0, /* dst_mask */ | |
1684 | FALSE), /* pcrel_offset */ | |
a6bb11b2 YZ |
1685 | |
1686 | HOWTO (AARCH64_R (COPY), /* type */ | |
1687 | 0, /* rightshift */ | |
1688 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1689 | 64, /* bitsize */ | |
1690 | FALSE, /* pc_relative */ | |
1691 | 0, /* bitpos */ | |
1692 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1693 | bfd_elf_generic_reloc, /* special_function */ | |
1694 | AARCH64_R_STR (COPY), /* name */ | |
1695 | TRUE, /* partial_inplace */ | |
1696 | 0xffffffff, /* src_mask */ | |
1697 | 0xffffffff, /* dst_mask */ | |
1698 | FALSE), /* pcrel_offset */ | |
1699 | ||
1700 | HOWTO (AARCH64_R (GLOB_DAT), /* type */ | |
1701 | 0, /* rightshift */ | |
1702 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1703 | 64, /* bitsize */ | |
1704 | FALSE, /* pc_relative */ | |
1705 | 0, /* bitpos */ | |
1706 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1707 | bfd_elf_generic_reloc, /* special_function */ | |
1708 | AARCH64_R_STR (GLOB_DAT), /* name */ | |
1709 | TRUE, /* partial_inplace */ | |
1710 | 0xffffffff, /* src_mask */ | |
1711 | 0xffffffff, /* dst_mask */ | |
1712 | FALSE), /* pcrel_offset */ | |
1713 | ||
1714 | HOWTO (AARCH64_R (JUMP_SLOT), /* type */ | |
1715 | 0, /* rightshift */ | |
1716 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1717 | 64, /* bitsize */ | |
1718 | FALSE, /* pc_relative */ | |
1719 | 0, /* bitpos */ | |
1720 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1721 | bfd_elf_generic_reloc, /* special_function */ | |
1722 | AARCH64_R_STR (JUMP_SLOT), /* name */ | |
1723 | TRUE, /* partial_inplace */ | |
1724 | 0xffffffff, /* src_mask */ | |
1725 | 0xffffffff, /* dst_mask */ | |
1726 | FALSE), /* pcrel_offset */ | |
1727 | ||
1728 | HOWTO (AARCH64_R (RELATIVE), /* type */ | |
1729 | 0, /* rightshift */ | |
1730 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1731 | 64, /* bitsize */ | |
1732 | FALSE, /* pc_relative */ | |
1733 | 0, /* bitpos */ | |
1734 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1735 | bfd_elf_generic_reloc, /* special_function */ | |
1736 | AARCH64_R_STR (RELATIVE), /* name */ | |
1737 | TRUE, /* partial_inplace */ | |
1738 | ALL_ONES, /* src_mask */ | |
1739 | ALL_ONES, /* dst_mask */ | |
1740 | FALSE), /* pcrel_offset */ | |
1741 | ||
1742 | HOWTO (AARCH64_R (TLS_DTPMOD), /* type */ | |
1743 | 0, /* rightshift */ | |
1744 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1745 | 64, /* bitsize */ | |
1746 | FALSE, /* pc_relative */ | |
1747 | 0, /* bitpos */ | |
1748 | complain_overflow_dont, /* complain_on_overflow */ | |
1749 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
1750 | #if ARCH_SIZE == 64 |
1751 | AARCH64_R_STR (TLS_DTPMOD64), /* name */ | |
1752 | #else | |
a6bb11b2 | 1753 | AARCH64_R_STR (TLS_DTPMOD), /* name */ |
da0781dc | 1754 | #endif |
a6bb11b2 YZ |
1755 | FALSE, /* partial_inplace */ |
1756 | 0, /* src_mask */ | |
1757 | ALL_ONES, /* dst_mask */ | |
1758 | FALSE), /* pc_reloffset */ | |
1759 | ||
1760 | HOWTO (AARCH64_R (TLS_DTPREL), /* type */ | |
1761 | 0, /* rightshift */ | |
1762 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1763 | 64, /* bitsize */ | |
1764 | FALSE, /* pc_relative */ | |
1765 | 0, /* bitpos */ | |
1766 | complain_overflow_dont, /* complain_on_overflow */ | |
1767 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
1768 | #if ARCH_SIZE == 64 |
1769 | AARCH64_R_STR (TLS_DTPREL64), /* name */ | |
1770 | #else | |
a6bb11b2 | 1771 | AARCH64_R_STR (TLS_DTPREL), /* name */ |
da0781dc | 1772 | #endif |
a6bb11b2 YZ |
1773 | FALSE, /* partial_inplace */ |
1774 | 0, /* src_mask */ | |
1775 | ALL_ONES, /* dst_mask */ | |
1776 | FALSE), /* pcrel_offset */ | |
1777 | ||
1778 | HOWTO (AARCH64_R (TLS_TPREL), /* type */ | |
1779 | 0, /* rightshift */ | |
1780 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1781 | 64, /* bitsize */ | |
1782 | FALSE, /* pc_relative */ | |
1783 | 0, /* bitpos */ | |
1784 | complain_overflow_dont, /* complain_on_overflow */ | |
1785 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
1786 | #if ARCH_SIZE == 64 |
1787 | AARCH64_R_STR (TLS_TPREL64), /* name */ | |
1788 | #else | |
a6bb11b2 | 1789 | AARCH64_R_STR (TLS_TPREL), /* name */ |
da0781dc | 1790 | #endif |
a6bb11b2 YZ |
1791 | FALSE, /* partial_inplace */ |
1792 | 0, /* src_mask */ | |
1793 | ALL_ONES, /* dst_mask */ | |
1794 | FALSE), /* pcrel_offset */ | |
1795 | ||
1796 | HOWTO (AARCH64_R (TLSDESC), /* type */ | |
1797 | 0, /* rightshift */ | |
1798 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1799 | 64, /* bitsize */ | |
1800 | FALSE, /* pc_relative */ | |
1801 | 0, /* bitpos */ | |
1802 | complain_overflow_dont, /* complain_on_overflow */ | |
1803 | bfd_elf_generic_reloc, /* special_function */ | |
1804 | AARCH64_R_STR (TLSDESC), /* name */ | |
1805 | FALSE, /* partial_inplace */ | |
1806 | 0, /* src_mask */ | |
1807 | ALL_ONES, /* dst_mask */ | |
1808 | FALSE), /* pcrel_offset */ | |
1809 | ||
1810 | HOWTO (AARCH64_R (IRELATIVE), /* type */ | |
1811 | 0, /* rightshift */ | |
1812 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1813 | 64, /* bitsize */ | |
1814 | FALSE, /* pc_relative */ | |
1815 | 0, /* bitpos */ | |
1816 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1817 | bfd_elf_generic_reloc, /* special_function */ | |
1818 | AARCH64_R_STR (IRELATIVE), /* name */ | |
1819 | FALSE, /* partial_inplace */ | |
1820 | 0, /* src_mask */ | |
1821 | ALL_ONES, /* dst_mask */ | |
1822 | FALSE), /* pcrel_offset */ | |
1823 | ||
1824 | EMPTY_HOWTO (0), | |
a06ea964 NC |
1825 | }; |
1826 | ||
a6bb11b2 YZ |
1827 | static reloc_howto_type elfNN_aarch64_howto_none = |
1828 | HOWTO (R_AARCH64_NONE, /* type */ | |
1829 | 0, /* rightshift */ | |
6346d5ca | 1830 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a6bb11b2 YZ |
1831 | 0, /* bitsize */ |
1832 | FALSE, /* pc_relative */ | |
1833 | 0, /* bitpos */ | |
1834 | complain_overflow_dont,/* complain_on_overflow */ | |
1835 | bfd_elf_generic_reloc, /* special_function */ | |
1836 | "R_AARCH64_NONE", /* name */ | |
1837 | FALSE, /* partial_inplace */ | |
1838 | 0, /* src_mask */ | |
1839 | 0, /* dst_mask */ | |
1840 | FALSE); /* pcrel_offset */ | |
1841 | ||
1842 | /* Given HOWTO, return the bfd internal relocation enumerator. */ | |
1843 | ||
1844 | static bfd_reloc_code_real_type | |
1845 | elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type *howto) | |
1846 | { | |
1847 | const int size | |
1848 | = (int) ARRAY_SIZE (elfNN_aarch64_howto_table); | |
1849 | const ptrdiff_t offset | |
1850 | = howto - elfNN_aarch64_howto_table; | |
1851 | ||
1852 | if (offset > 0 && offset < size - 1) | |
1853 | return BFD_RELOC_AARCH64_RELOC_START + offset; | |
1854 | ||
1855 | if (howto == &elfNN_aarch64_howto_none) | |
1856 | return BFD_RELOC_AARCH64_NONE; | |
1857 | ||
1858 | return BFD_RELOC_AARCH64_RELOC_START; | |
1859 | } | |
1860 | ||
1861 | /* Given R_TYPE, return the bfd internal relocation enumerator. */ | |
1862 | ||
1863 | static bfd_reloc_code_real_type | |
1864 | elfNN_aarch64_bfd_reloc_from_type (unsigned int r_type) | |
1865 | { | |
1866 | static bfd_boolean initialized_p = FALSE; | |
1867 | /* Indexed by R_TYPE, values are offsets in the howto_table. */ | |
1868 | static unsigned int offsets[R_AARCH64_end]; | |
1869 | ||
1870 | if (initialized_p == FALSE) | |
1871 | { | |
1872 | unsigned int i; | |
1873 | ||
1874 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) | |
1875 | if (elfNN_aarch64_howto_table[i].type != 0) | |
1876 | offsets[elfNN_aarch64_howto_table[i].type] = i; | |
1877 | ||
1878 | initialized_p = TRUE; | |
1879 | } | |
1880 | ||
1881 | if (r_type == R_AARCH64_NONE || r_type == R_AARCH64_NULL) | |
1882 | return BFD_RELOC_AARCH64_NONE; | |
1883 | ||
5860e3f8 NC |
1884 | /* PR 17512: file: b371e70a. */ |
1885 | if (r_type >= R_AARCH64_end) | |
1886 | { | |
1887 | _bfd_error_handler (_("Invalid AArch64 reloc number: %d"), r_type); | |
1888 | bfd_set_error (bfd_error_bad_value); | |
1889 | return BFD_RELOC_AARCH64_NONE; | |
1890 | } | |
1891 | ||
a6bb11b2 YZ |
1892 | return BFD_RELOC_AARCH64_RELOC_START + offsets[r_type]; |
1893 | } | |
1894 | ||
1895 | struct elf_aarch64_reloc_map | |
1896 | { | |
1897 | bfd_reloc_code_real_type from; | |
1898 | bfd_reloc_code_real_type to; | |
1899 | }; | |
1900 | ||
1901 | /* Map bfd generic reloc to AArch64-specific reloc. */ | |
1902 | static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map[] = | |
1903 | { | |
1904 | {BFD_RELOC_NONE, BFD_RELOC_AARCH64_NONE}, | |
1905 | ||
1906 | /* Basic data relocations. */ | |
1907 | {BFD_RELOC_CTOR, BFD_RELOC_AARCH64_NN}, | |
1908 | {BFD_RELOC_64, BFD_RELOC_AARCH64_64}, | |
1909 | {BFD_RELOC_32, BFD_RELOC_AARCH64_32}, | |
1910 | {BFD_RELOC_16, BFD_RELOC_AARCH64_16}, | |
1911 | {BFD_RELOC_64_PCREL, BFD_RELOC_AARCH64_64_PCREL}, | |
1912 | {BFD_RELOC_32_PCREL, BFD_RELOC_AARCH64_32_PCREL}, | |
1913 | {BFD_RELOC_16_PCREL, BFD_RELOC_AARCH64_16_PCREL}, | |
1914 | }; | |
1915 | ||
1916 | /* Given the bfd internal relocation enumerator in CODE, return the | |
1917 | corresponding howto entry. */ | |
1918 | ||
1919 | static reloc_howto_type * | |
1920 | elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code) | |
1921 | { | |
1922 | unsigned int i; | |
1923 | ||
1924 | /* Convert bfd generic reloc to AArch64-specific reloc. */ | |
1925 | if (code < BFD_RELOC_AARCH64_RELOC_START | |
1926 | || code > BFD_RELOC_AARCH64_RELOC_END) | |
1927 | for (i = 0; i < ARRAY_SIZE (elf_aarch64_reloc_map); i++) | |
1928 | if (elf_aarch64_reloc_map[i].from == code) | |
1929 | { | |
1930 | code = elf_aarch64_reloc_map[i].to; | |
1931 | break; | |
1932 | } | |
1933 | ||
1934 | if (code > BFD_RELOC_AARCH64_RELOC_START | |
1935 | && code < BFD_RELOC_AARCH64_RELOC_END) | |
1936 | if (elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START].type) | |
1937 | return &elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START]; | |
1938 | ||
54757ed1 AP |
1939 | if (code == BFD_RELOC_AARCH64_NONE) |
1940 | return &elfNN_aarch64_howto_none; | |
1941 | ||
a6bb11b2 YZ |
1942 | return NULL; |
1943 | } | |
1944 | ||
a06ea964 | 1945 | static reloc_howto_type * |
cec5225b | 1946 | elfNN_aarch64_howto_from_type (unsigned int r_type) |
a06ea964 | 1947 | { |
a6bb11b2 YZ |
1948 | bfd_reloc_code_real_type val; |
1949 | reloc_howto_type *howto; | |
1950 | ||
cec5225b YZ |
1951 | #if ARCH_SIZE == 32 |
1952 | if (r_type > 256) | |
1953 | { | |
1954 | bfd_set_error (bfd_error_bad_value); | |
1955 | return NULL; | |
1956 | } | |
1957 | #endif | |
1958 | ||
a6bb11b2 YZ |
1959 | if (r_type == R_AARCH64_NONE) |
1960 | return &elfNN_aarch64_howto_none; | |
a06ea964 | 1961 | |
a6bb11b2 YZ |
1962 | val = elfNN_aarch64_bfd_reloc_from_type (r_type); |
1963 | howto = elfNN_aarch64_howto_from_bfd_reloc (val); | |
a06ea964 | 1964 | |
a6bb11b2 YZ |
1965 | if (howto != NULL) |
1966 | return howto; | |
a06ea964 | 1967 | |
a06ea964 NC |
1968 | bfd_set_error (bfd_error_bad_value); |
1969 | return NULL; | |
1970 | } | |
1971 | ||
1972 | static void | |
cec5225b | 1973 | elfNN_aarch64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc, |
a06ea964 NC |
1974 | Elf_Internal_Rela *elf_reloc) |
1975 | { | |
1976 | unsigned int r_type; | |
1977 | ||
cec5225b YZ |
1978 | r_type = ELFNN_R_TYPE (elf_reloc->r_info); |
1979 | bfd_reloc->howto = elfNN_aarch64_howto_from_type (r_type); | |
a06ea964 NC |
1980 | } |
1981 | ||
a06ea964 | 1982 | static reloc_howto_type * |
cec5225b | 1983 | elfNN_aarch64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
1984 | bfd_reloc_code_real_type code) |
1985 | { | |
a6bb11b2 | 1986 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (code); |
a06ea964 | 1987 | |
a6bb11b2 YZ |
1988 | if (howto != NULL) |
1989 | return howto; | |
a06ea964 NC |
1990 | |
1991 | bfd_set_error (bfd_error_bad_value); | |
1992 | return NULL; | |
1993 | } | |
1994 | ||
1995 | static reloc_howto_type * | |
cec5225b | 1996 | elfNN_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
1997 | const char *r_name) |
1998 | { | |
1999 | unsigned int i; | |
2000 | ||
a6bb11b2 YZ |
2001 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) |
2002 | if (elfNN_aarch64_howto_table[i].name != NULL | |
2003 | && strcasecmp (elfNN_aarch64_howto_table[i].name, r_name) == 0) | |
2004 | return &elfNN_aarch64_howto_table[i]; | |
a06ea964 NC |
2005 | |
2006 | return NULL; | |
2007 | } | |
2008 | ||
6d00b590 | 2009 | #define TARGET_LITTLE_SYM aarch64_elfNN_le_vec |
cec5225b | 2010 | #define TARGET_LITTLE_NAME "elfNN-littleaarch64" |
6d00b590 | 2011 | #define TARGET_BIG_SYM aarch64_elfNN_be_vec |
cec5225b | 2012 | #define TARGET_BIG_NAME "elfNN-bigaarch64" |
a06ea964 | 2013 | |
a06ea964 NC |
2014 | /* The linker script knows the section names for placement. |
2015 | The entry_names are used to do simple name mangling on the stubs. | |
2016 | Given a function name, and its type, the stub can be found. The | |
2017 | name can be changed. The only requirement is the %s be present. */ | |
2018 | #define STUB_ENTRY_NAME "__%s_veneer" | |
2019 | ||
2020 | /* The name of the dynamic interpreter. This is put in the .interp | |
2021 | section. */ | |
2022 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
2023 | ||
2024 | #define AARCH64_MAX_FWD_BRANCH_OFFSET \ | |
2025 | (((1 << 25) - 1) << 2) | |
2026 | #define AARCH64_MAX_BWD_BRANCH_OFFSET \ | |
2027 | (-((1 << 25) << 2)) | |
2028 | ||
2029 | #define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1) | |
2030 | #define AARCH64_MIN_ADRP_IMM (-(1 << 20)) | |
2031 | ||
2032 | static int | |
2033 | aarch64_valid_for_adrp_p (bfd_vma value, bfd_vma place) | |
2034 | { | |
2035 | bfd_signed_vma offset = (bfd_signed_vma) (PG (value) - PG (place)) >> 12; | |
2036 | return offset <= AARCH64_MAX_ADRP_IMM && offset >= AARCH64_MIN_ADRP_IMM; | |
2037 | } | |
2038 | ||
2039 | static int | |
2040 | aarch64_valid_branch_p (bfd_vma value, bfd_vma place) | |
2041 | { | |
2042 | bfd_signed_vma offset = (bfd_signed_vma) (value - place); | |
2043 | return (offset <= AARCH64_MAX_FWD_BRANCH_OFFSET | |
2044 | && offset >= AARCH64_MAX_BWD_BRANCH_OFFSET); | |
2045 | } | |
2046 | ||
2047 | static const uint32_t aarch64_adrp_branch_stub [] = | |
2048 | { | |
2049 | 0x90000010, /* adrp ip0, X */ | |
2050 | /* R_AARCH64_ADR_HI21_PCREL(X) */ | |
2051 | 0x91000210, /* add ip0, ip0, :lo12:X */ | |
2052 | /* R_AARCH64_ADD_ABS_LO12_NC(X) */ | |
2053 | 0xd61f0200, /* br ip0 */ | |
2054 | }; | |
2055 | ||
2056 | static const uint32_t aarch64_long_branch_stub[] = | |
2057 | { | |
cec5225b | 2058 | #if ARCH_SIZE == 64 |
a06ea964 | 2059 | 0x58000090, /* ldr ip0, 1f */ |
cec5225b YZ |
2060 | #else |
2061 | 0x18000090, /* ldr wip0, 1f */ | |
2062 | #endif | |
a06ea964 NC |
2063 | 0x10000011, /* adr ip1, #0 */ |
2064 | 0x8b110210, /* add ip0, ip0, ip1 */ | |
2065 | 0xd61f0200, /* br ip0 */ | |
cec5225b YZ |
2066 | 0x00000000, /* 1: .xword or .word |
2067 | R_AARCH64_PRELNN(X) + 12 | |
a06ea964 NC |
2068 | */ |
2069 | 0x00000000, | |
2070 | }; | |
2071 | ||
68fcca92 JW |
2072 | static const uint32_t aarch64_erratum_835769_stub[] = |
2073 | { | |
2074 | 0x00000000, /* Placeholder for multiply accumulate. */ | |
2075 | 0x14000000, /* b <label> */ | |
2076 | }; | |
2077 | ||
4106101c MS |
2078 | static const uint32_t aarch64_erratum_843419_stub[] = |
2079 | { | |
2080 | 0x00000000, /* Placeholder for LDR instruction. */ | |
2081 | 0x14000000, /* b <label> */ | |
2082 | }; | |
2083 | ||
a06ea964 NC |
2084 | /* Section name for stubs is the associated section name plus this |
2085 | string. */ | |
2086 | #define STUB_SUFFIX ".stub" | |
2087 | ||
cec5225b | 2088 | enum elf_aarch64_stub_type |
a06ea964 NC |
2089 | { |
2090 | aarch64_stub_none, | |
2091 | aarch64_stub_adrp_branch, | |
2092 | aarch64_stub_long_branch, | |
68fcca92 | 2093 | aarch64_stub_erratum_835769_veneer, |
4106101c | 2094 | aarch64_stub_erratum_843419_veneer, |
a06ea964 NC |
2095 | }; |
2096 | ||
cec5225b | 2097 | struct elf_aarch64_stub_hash_entry |
a06ea964 NC |
2098 | { |
2099 | /* Base hash table entry structure. */ | |
2100 | struct bfd_hash_entry root; | |
2101 | ||
2102 | /* The stub section. */ | |
2103 | asection *stub_sec; | |
2104 | ||
2105 | /* Offset within stub_sec of the beginning of this stub. */ | |
2106 | bfd_vma stub_offset; | |
2107 | ||
2108 | /* Given the symbol's value and its section we can determine its final | |
2109 | value when building the stubs (so the stub knows where to jump). */ | |
2110 | bfd_vma target_value; | |
2111 | asection *target_section; | |
2112 | ||
cec5225b | 2113 | enum elf_aarch64_stub_type stub_type; |
a06ea964 NC |
2114 | |
2115 | /* The symbol table entry, if any, that this was derived from. */ | |
cec5225b | 2116 | struct elf_aarch64_link_hash_entry *h; |
a06ea964 NC |
2117 | |
2118 | /* Destination symbol type */ | |
2119 | unsigned char st_type; | |
2120 | ||
2121 | /* Where this stub is being called from, or, in the case of combined | |
2122 | stub sections, the first input section in the group. */ | |
2123 | asection *id_sec; | |
2124 | ||
2125 | /* The name for the local symbol at the start of this stub. The | |
2126 | stub name in the hash table has to be unique; this does not, so | |
2127 | it can be friendlier. */ | |
2128 | char *output_name; | |
68fcca92 JW |
2129 | |
2130 | /* The instruction which caused this stub to be generated (only valid for | |
2131 | erratum 835769 workaround stubs at present). */ | |
2132 | uint32_t veneered_insn; | |
4106101c MS |
2133 | |
2134 | /* In an erratum 843419 workaround stub, the ADRP instruction offset. */ | |
2135 | bfd_vma adrp_offset; | |
a06ea964 NC |
2136 | }; |
2137 | ||
2138 | /* Used to build a map of a section. This is required for mixed-endian | |
2139 | code/data. */ | |
2140 | ||
cec5225b | 2141 | typedef struct elf_elf_section_map |
a06ea964 NC |
2142 | { |
2143 | bfd_vma vma; | |
2144 | char type; | |
2145 | } | |
cec5225b | 2146 | elf_aarch64_section_map; |
a06ea964 NC |
2147 | |
2148 | ||
2149 | typedef struct _aarch64_elf_section_data | |
2150 | { | |
2151 | struct bfd_elf_section_data elf; | |
2152 | unsigned int mapcount; | |
2153 | unsigned int mapsize; | |
cec5225b | 2154 | elf_aarch64_section_map *map; |
a06ea964 NC |
2155 | } |
2156 | _aarch64_elf_section_data; | |
2157 | ||
cec5225b | 2158 | #define elf_aarch64_section_data(sec) \ |
a06ea964 NC |
2159 | ((_aarch64_elf_section_data *) elf_section_data (sec)) |
2160 | ||
4e8516b2 AP |
2161 | /* The size of the thread control block which is defined to be two pointers. */ |
2162 | #define TCB_SIZE (ARCH_SIZE/8)*2 | |
a06ea964 NC |
2163 | |
2164 | struct elf_aarch64_local_symbol | |
2165 | { | |
2166 | unsigned int got_type; | |
2167 | bfd_signed_vma got_refcount; | |
2168 | bfd_vma got_offset; | |
2169 | ||
2170 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The | |
2171 | offset is from the end of the jump table and reserved entries | |
2172 | within the PLTGOT. | |
2173 | ||
2174 | The magic value (bfd_vma) -1 indicates that an offset has not be | |
2175 | allocated. */ | |
2176 | bfd_vma tlsdesc_got_jump_table_offset; | |
2177 | }; | |
2178 | ||
2179 | struct elf_aarch64_obj_tdata | |
2180 | { | |
2181 | struct elf_obj_tdata root; | |
2182 | ||
2183 | /* local symbol descriptors */ | |
2184 | struct elf_aarch64_local_symbol *locals; | |
2185 | ||
2186 | /* Zero to warn when linking objects with incompatible enum sizes. */ | |
2187 | int no_enum_size_warning; | |
2188 | ||
2189 | /* Zero to warn when linking objects with incompatible wchar_t sizes. */ | |
2190 | int no_wchar_size_warning; | |
2191 | }; | |
2192 | ||
2193 | #define elf_aarch64_tdata(bfd) \ | |
2194 | ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any) | |
2195 | ||
cec5225b | 2196 | #define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals) |
a06ea964 NC |
2197 | |
2198 | #define is_aarch64_elf(bfd) \ | |
2199 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
2200 | && elf_tdata (bfd) != NULL \ | |
2201 | && elf_object_id (bfd) == AARCH64_ELF_DATA) | |
2202 | ||
2203 | static bfd_boolean | |
cec5225b | 2204 | elfNN_aarch64_mkobject (bfd *abfd) |
a06ea964 NC |
2205 | { |
2206 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_aarch64_obj_tdata), | |
2207 | AARCH64_ELF_DATA); | |
2208 | } | |
2209 | ||
cec5225b YZ |
2210 | #define elf_aarch64_hash_entry(ent) \ |
2211 | ((struct elf_aarch64_link_hash_entry *)(ent)) | |
a06ea964 NC |
2212 | |
2213 | #define GOT_UNKNOWN 0 | |
2214 | #define GOT_NORMAL 1 | |
2215 | #define GOT_TLS_GD 2 | |
2216 | #define GOT_TLS_IE 4 | |
2217 | #define GOT_TLSDESC_GD 8 | |
2218 | ||
2219 | #define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD)) | |
2220 | ||
2221 | /* AArch64 ELF linker hash entry. */ | |
cec5225b | 2222 | struct elf_aarch64_link_hash_entry |
a06ea964 NC |
2223 | { |
2224 | struct elf_link_hash_entry root; | |
2225 | ||
2226 | /* Track dynamic relocs copied for this symbol. */ | |
2227 | struct elf_dyn_relocs *dyn_relocs; | |
2228 | ||
a06ea964 NC |
2229 | /* Since PLT entries have variable size, we need to record the |
2230 | index into .got.plt instead of recomputing it from the PLT | |
2231 | offset. */ | |
2232 | bfd_signed_vma plt_got_offset; | |
2233 | ||
2234 | /* Bit mask representing the type of GOT entry(s) if any required by | |
2235 | this symbol. */ | |
2236 | unsigned int got_type; | |
2237 | ||
2238 | /* A pointer to the most recently used stub hash entry against this | |
2239 | symbol. */ | |
cec5225b | 2240 | struct elf_aarch64_stub_hash_entry *stub_cache; |
a06ea964 NC |
2241 | |
2242 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset | |
2243 | is from the end of the jump table and reserved entries within the PLTGOT. | |
2244 | ||
2245 | The magic value (bfd_vma) -1 indicates that an offset has not | |
2246 | be allocated. */ | |
2247 | bfd_vma tlsdesc_got_jump_table_offset; | |
2248 | }; | |
2249 | ||
2250 | static unsigned int | |
cec5225b | 2251 | elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry *h, |
a06ea964 NC |
2252 | bfd *abfd, |
2253 | unsigned long r_symndx) | |
2254 | { | |
2255 | if (h) | |
cec5225b | 2256 | return elf_aarch64_hash_entry (h)->got_type; |
a06ea964 | 2257 | |
cec5225b | 2258 | if (! elf_aarch64_locals (abfd)) |
a06ea964 NC |
2259 | return GOT_UNKNOWN; |
2260 | ||
cec5225b | 2261 | return elf_aarch64_locals (abfd)[r_symndx].got_type; |
a06ea964 NC |
2262 | } |
2263 | ||
a06ea964 | 2264 | /* Get the AArch64 elf linker hash table from a link_info structure. */ |
cec5225b YZ |
2265 | #define elf_aarch64_hash_table(info) \ |
2266 | ((struct elf_aarch64_link_hash_table *) ((info)->hash)) | |
a06ea964 NC |
2267 | |
2268 | #define aarch64_stub_hash_lookup(table, string, create, copy) \ | |
cec5225b | 2269 | ((struct elf_aarch64_stub_hash_entry *) \ |
a06ea964 NC |
2270 | bfd_hash_lookup ((table), (string), (create), (copy))) |
2271 | ||
2272 | /* AArch64 ELF linker hash table. */ | |
cec5225b | 2273 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
2274 | { |
2275 | /* The main hash table. */ | |
2276 | struct elf_link_hash_table root; | |
2277 | ||
2278 | /* Nonzero to force PIC branch veneers. */ | |
2279 | int pic_veneer; | |
2280 | ||
68fcca92 JW |
2281 | /* Fix erratum 835769. */ |
2282 | int fix_erratum_835769; | |
2283 | ||
4106101c MS |
2284 | /* Fix erratum 843419. */ |
2285 | int fix_erratum_843419; | |
2286 | ||
2287 | /* Enable ADRP->ADR rewrite for erratum 843419 workaround. */ | |
2288 | int fix_erratum_843419_adr; | |
2289 | ||
1f56df9d JW |
2290 | /* Don't apply link-time values for dynamic relocations. */ |
2291 | int no_apply_dynamic_relocs; | |
2292 | ||
a06ea964 NC |
2293 | /* The number of bytes in the initial entry in the PLT. */ |
2294 | bfd_size_type plt_header_size; | |
2295 | ||
2296 | /* The number of bytes in the subsequent PLT etries. */ | |
2297 | bfd_size_type plt_entry_size; | |
2298 | ||
2299 | /* Short-cuts to get to dynamic linker sections. */ | |
2300 | asection *sdynbss; | |
2301 | asection *srelbss; | |
2302 | ||
2303 | /* Small local sym cache. */ | |
2304 | struct sym_cache sym_cache; | |
2305 | ||
2306 | /* For convenience in allocate_dynrelocs. */ | |
2307 | bfd *obfd; | |
2308 | ||
2309 | /* The amount of space used by the reserved portion of the sgotplt | |
2310 | section, plus whatever space is used by the jump slots. */ | |
2311 | bfd_vma sgotplt_jump_table_size; | |
2312 | ||
2313 | /* The stub hash table. */ | |
2314 | struct bfd_hash_table stub_hash_table; | |
2315 | ||
2316 | /* Linker stub bfd. */ | |
2317 | bfd *stub_bfd; | |
2318 | ||
2319 | /* Linker call-backs. */ | |
2320 | asection *(*add_stub_section) (const char *, asection *); | |
2321 | void (*layout_sections_again) (void); | |
2322 | ||
2323 | /* Array to keep track of which stub sections have been created, and | |
2324 | information on stub grouping. */ | |
2325 | struct map_stub | |
2326 | { | |
2327 | /* This is the section to which stubs in the group will be | |
2328 | attached. */ | |
2329 | asection *link_sec; | |
2330 | /* The stub section. */ | |
2331 | asection *stub_sec; | |
2332 | } *stub_group; | |
2333 | ||
cec5225b | 2334 | /* Assorted information used by elfNN_aarch64_size_stubs. */ |
a06ea964 | 2335 | unsigned int bfd_count; |
7292b3ac | 2336 | unsigned int top_index; |
a06ea964 NC |
2337 | asection **input_list; |
2338 | ||
2339 | /* The offset into splt of the PLT entry for the TLS descriptor | |
2340 | resolver. Special values are 0, if not necessary (or not found | |
2341 | to be necessary yet), and -1 if needed but not determined | |
2342 | yet. */ | |
2343 | bfd_vma tlsdesc_plt; | |
2344 | ||
2345 | /* The GOT offset for the lazy trampoline. Communicated to the | |
2346 | loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1 | |
2347 | indicates an offset is not allocated. */ | |
2348 | bfd_vma dt_tlsdesc_got; | |
1419bbe5 WN |
2349 | |
2350 | /* Used by local STT_GNU_IFUNC symbols. */ | |
2351 | htab_t loc_hash_table; | |
2352 | void * loc_hash_memory; | |
a06ea964 NC |
2353 | }; |
2354 | ||
a06ea964 NC |
2355 | /* Create an entry in an AArch64 ELF linker hash table. */ |
2356 | ||
2357 | static struct bfd_hash_entry * | |
cec5225b | 2358 | elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry, |
a06ea964 NC |
2359 | struct bfd_hash_table *table, |
2360 | const char *string) | |
2361 | { | |
cec5225b YZ |
2362 | struct elf_aarch64_link_hash_entry *ret = |
2363 | (struct elf_aarch64_link_hash_entry *) entry; | |
a06ea964 NC |
2364 | |
2365 | /* Allocate the structure if it has not already been allocated by a | |
2366 | subclass. */ | |
2367 | if (ret == NULL) | |
2368 | ret = bfd_hash_allocate (table, | |
cec5225b | 2369 | sizeof (struct elf_aarch64_link_hash_entry)); |
a06ea964 NC |
2370 | if (ret == NULL) |
2371 | return (struct bfd_hash_entry *) ret; | |
2372 | ||
2373 | /* Call the allocation method of the superclass. */ | |
cec5225b | 2374 | ret = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
2375 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
2376 | table, string)); | |
2377 | if (ret != NULL) | |
2378 | { | |
2379 | ret->dyn_relocs = NULL; | |
a06ea964 NC |
2380 | ret->got_type = GOT_UNKNOWN; |
2381 | ret->plt_got_offset = (bfd_vma) - 1; | |
2382 | ret->stub_cache = NULL; | |
2383 | ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
2384 | } | |
2385 | ||
2386 | return (struct bfd_hash_entry *) ret; | |
2387 | } | |
2388 | ||
2389 | /* Initialize an entry in the stub hash table. */ | |
2390 | ||
2391 | static struct bfd_hash_entry * | |
2392 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
2393 | struct bfd_hash_table *table, const char *string) | |
2394 | { | |
2395 | /* Allocate the structure if it has not already been allocated by a | |
2396 | subclass. */ | |
2397 | if (entry == NULL) | |
2398 | { | |
2399 | entry = bfd_hash_allocate (table, | |
2400 | sizeof (struct | |
cec5225b | 2401 | elf_aarch64_stub_hash_entry)); |
a06ea964 NC |
2402 | if (entry == NULL) |
2403 | return entry; | |
2404 | } | |
2405 | ||
2406 | /* Call the allocation method of the superclass. */ | |
2407 | entry = bfd_hash_newfunc (entry, table, string); | |
2408 | if (entry != NULL) | |
2409 | { | |
cec5225b | 2410 | struct elf_aarch64_stub_hash_entry *eh; |
a06ea964 NC |
2411 | |
2412 | /* Initialize the local fields. */ | |
cec5225b | 2413 | eh = (struct elf_aarch64_stub_hash_entry *) entry; |
4106101c | 2414 | eh->adrp_offset = 0; |
a06ea964 NC |
2415 | eh->stub_sec = NULL; |
2416 | eh->stub_offset = 0; | |
2417 | eh->target_value = 0; | |
2418 | eh->target_section = NULL; | |
2419 | eh->stub_type = aarch64_stub_none; | |
2420 | eh->h = NULL; | |
2421 | eh->id_sec = NULL; | |
2422 | } | |
2423 | ||
2424 | return entry; | |
2425 | } | |
2426 | ||
1419bbe5 WN |
2427 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry |
2428 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
2429 | as global symbol. We reuse indx and dynstr_index for local symbol | |
2430 | hash since they aren't used by global symbols in this backend. */ | |
2431 | ||
2432 | static hashval_t | |
2433 | elfNN_aarch64_local_htab_hash (const void *ptr) | |
2434 | { | |
2435 | struct elf_link_hash_entry *h | |
2436 | = (struct elf_link_hash_entry *) ptr; | |
2437 | return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); | |
2438 | } | |
2439 | ||
2440 | /* Compare local hash entries. */ | |
2441 | ||
2442 | static int | |
2443 | elfNN_aarch64_local_htab_eq (const void *ptr1, const void *ptr2) | |
2444 | { | |
2445 | struct elf_link_hash_entry *h1 | |
2446 | = (struct elf_link_hash_entry *) ptr1; | |
2447 | struct elf_link_hash_entry *h2 | |
2448 | = (struct elf_link_hash_entry *) ptr2; | |
2449 | ||
2450 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
2451 | } | |
2452 | ||
2453 | /* Find and/or create a hash entry for local symbol. */ | |
2454 | ||
2455 | static struct elf_link_hash_entry * | |
2456 | elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table *htab, | |
2457 | bfd *abfd, const Elf_Internal_Rela *rel, | |
2458 | bfd_boolean create) | |
2459 | { | |
2460 | struct elf_aarch64_link_hash_entry e, *ret; | |
2461 | asection *sec = abfd->sections; | |
2462 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, | |
2463 | ELFNN_R_SYM (rel->r_info)); | |
2464 | void **slot; | |
2465 | ||
2466 | e.root.indx = sec->id; | |
2467 | e.root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2468 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, | |
2469 | create ? INSERT : NO_INSERT); | |
2470 | ||
2471 | if (!slot) | |
2472 | return NULL; | |
2473 | ||
2474 | if (*slot) | |
2475 | { | |
2476 | ret = (struct elf_aarch64_link_hash_entry *) *slot; | |
2477 | return &ret->root; | |
2478 | } | |
2479 | ||
2480 | ret = (struct elf_aarch64_link_hash_entry *) | |
2481 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, | |
2482 | sizeof (struct elf_aarch64_link_hash_entry)); | |
2483 | if (ret) | |
2484 | { | |
2485 | memset (ret, 0, sizeof (*ret)); | |
2486 | ret->root.indx = sec->id; | |
2487 | ret->root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2488 | ret->root.dynindx = -1; | |
2489 | *slot = ret; | |
2490 | } | |
2491 | return &ret->root; | |
2492 | } | |
a06ea964 NC |
2493 | |
2494 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
2495 | ||
2496 | static void | |
cec5225b | 2497 | elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info, |
a06ea964 NC |
2498 | struct elf_link_hash_entry *dir, |
2499 | struct elf_link_hash_entry *ind) | |
2500 | { | |
cec5225b | 2501 | struct elf_aarch64_link_hash_entry *edir, *eind; |
a06ea964 | 2502 | |
cec5225b YZ |
2503 | edir = (struct elf_aarch64_link_hash_entry *) dir; |
2504 | eind = (struct elf_aarch64_link_hash_entry *) ind; | |
a06ea964 NC |
2505 | |
2506 | if (eind->dyn_relocs != NULL) | |
2507 | { | |
2508 | if (edir->dyn_relocs != NULL) | |
2509 | { | |
2510 | struct elf_dyn_relocs **pp; | |
2511 | struct elf_dyn_relocs *p; | |
2512 | ||
2513 | /* Add reloc counts against the indirect sym to the direct sym | |
2514 | list. Merge any entries against the same section. */ | |
2515 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) | |
2516 | { | |
2517 | struct elf_dyn_relocs *q; | |
2518 | ||
2519 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
2520 | if (q->sec == p->sec) | |
2521 | { | |
2522 | q->pc_count += p->pc_count; | |
2523 | q->count += p->count; | |
2524 | *pp = p->next; | |
2525 | break; | |
2526 | } | |
2527 | if (q == NULL) | |
2528 | pp = &p->next; | |
2529 | } | |
2530 | *pp = edir->dyn_relocs; | |
2531 | } | |
2532 | ||
2533 | edir->dyn_relocs = eind->dyn_relocs; | |
2534 | eind->dyn_relocs = NULL; | |
2535 | } | |
2536 | ||
a06ea964 NC |
2537 | if (ind->root.type == bfd_link_hash_indirect) |
2538 | { | |
2539 | /* Copy over PLT info. */ | |
2540 | if (dir->got.refcount <= 0) | |
2541 | { | |
2542 | edir->got_type = eind->got_type; | |
2543 | eind->got_type = GOT_UNKNOWN; | |
2544 | } | |
2545 | } | |
2546 | ||
2547 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
2548 | } | |
2549 | ||
68faa637 AM |
2550 | /* Destroy an AArch64 elf linker hash table. */ |
2551 | ||
2552 | static void | |
d495ab0d | 2553 | elfNN_aarch64_link_hash_table_free (bfd *obfd) |
68faa637 AM |
2554 | { |
2555 | struct elf_aarch64_link_hash_table *ret | |
d495ab0d | 2556 | = (struct elf_aarch64_link_hash_table *) obfd->link.hash; |
68faa637 AM |
2557 | |
2558 | if (ret->loc_hash_table) | |
2559 | htab_delete (ret->loc_hash_table); | |
2560 | if (ret->loc_hash_memory) | |
2561 | objalloc_free ((struct objalloc *) ret->loc_hash_memory); | |
2562 | ||
2563 | bfd_hash_table_free (&ret->stub_hash_table); | |
d495ab0d | 2564 | _bfd_elf_link_hash_table_free (obfd); |
68faa637 AM |
2565 | } |
2566 | ||
a06ea964 NC |
2567 | /* Create an AArch64 elf linker hash table. */ |
2568 | ||
2569 | static struct bfd_link_hash_table * | |
cec5225b | 2570 | elfNN_aarch64_link_hash_table_create (bfd *abfd) |
a06ea964 | 2571 | { |
cec5225b YZ |
2572 | struct elf_aarch64_link_hash_table *ret; |
2573 | bfd_size_type amt = sizeof (struct elf_aarch64_link_hash_table); | |
a06ea964 | 2574 | |
7bf52ea2 | 2575 | ret = bfd_zmalloc (amt); |
a06ea964 NC |
2576 | if (ret == NULL) |
2577 | return NULL; | |
2578 | ||
2579 | if (!_bfd_elf_link_hash_table_init | |
cec5225b YZ |
2580 | (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc, |
2581 | sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA)) | |
a06ea964 NC |
2582 | { |
2583 | free (ret); | |
2584 | return NULL; | |
2585 | } | |
2586 | ||
a06ea964 NC |
2587 | ret->plt_header_size = PLT_ENTRY_SIZE; |
2588 | ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE; | |
a06ea964 | 2589 | ret->obfd = abfd; |
a06ea964 NC |
2590 | ret->dt_tlsdesc_got = (bfd_vma) - 1; |
2591 | ||
2592 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc, | |
cec5225b | 2593 | sizeof (struct elf_aarch64_stub_hash_entry))) |
a06ea964 | 2594 | { |
d495ab0d | 2595 | _bfd_elf_link_hash_table_free (abfd); |
a06ea964 NC |
2596 | return NULL; |
2597 | } | |
2598 | ||
1419bbe5 WN |
2599 | ret->loc_hash_table = htab_try_create (1024, |
2600 | elfNN_aarch64_local_htab_hash, | |
2601 | elfNN_aarch64_local_htab_eq, | |
2602 | NULL); | |
2603 | ret->loc_hash_memory = objalloc_create (); | |
2604 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
2605 | { | |
d495ab0d | 2606 | elfNN_aarch64_link_hash_table_free (abfd); |
1419bbe5 WN |
2607 | return NULL; |
2608 | } | |
d495ab0d | 2609 | ret->root.root.hash_table_free = elfNN_aarch64_link_hash_table_free; |
1419bbe5 | 2610 | |
a06ea964 NC |
2611 | return &ret->root.root; |
2612 | } | |
2613 | ||
a06ea964 NC |
2614 | static bfd_boolean |
2615 | aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section, | |
2616 | bfd_vma offset, bfd_vma value) | |
2617 | { | |
2618 | reloc_howto_type *howto; | |
2619 | bfd_vma place; | |
2620 | ||
cec5225b | 2621 | howto = elfNN_aarch64_howto_from_type (r_type); |
a06ea964 NC |
2622 | place = (input_section->output_section->vma + input_section->output_offset |
2623 | + offset); | |
caed7120 YZ |
2624 | |
2625 | r_type = elfNN_aarch64_bfd_reloc_from_type (r_type); | |
2626 | value = _bfd_aarch64_elf_resolve_relocation (r_type, place, value, 0, FALSE); | |
2627 | return _bfd_aarch64_elf_put_addend (input_bfd, | |
2628 | input_section->contents + offset, r_type, | |
2629 | howto, value); | |
a06ea964 NC |
2630 | } |
2631 | ||
cec5225b | 2632 | static enum elf_aarch64_stub_type |
a06ea964 NC |
2633 | aarch64_select_branch_stub (bfd_vma value, bfd_vma place) |
2634 | { | |
2635 | if (aarch64_valid_for_adrp_p (value, place)) | |
2636 | return aarch64_stub_adrp_branch; | |
2637 | return aarch64_stub_long_branch; | |
2638 | } | |
2639 | ||
2640 | /* Determine the type of stub needed, if any, for a call. */ | |
2641 | ||
cec5225b | 2642 | static enum elf_aarch64_stub_type |
9a228467 | 2643 | aarch64_type_of_stub (asection *input_sec, |
a06ea964 | 2644 | const Elf_Internal_Rela *rel, |
f678ded7 | 2645 | asection *sym_sec, |
a06ea964 | 2646 | unsigned char st_type, |
a06ea964 NC |
2647 | bfd_vma destination) |
2648 | { | |
2649 | bfd_vma location; | |
2650 | bfd_signed_vma branch_offset; | |
2651 | unsigned int r_type; | |
cec5225b | 2652 | enum elf_aarch64_stub_type stub_type = aarch64_stub_none; |
a06ea964 | 2653 | |
f678ded7 | 2654 | if (st_type != STT_FUNC |
2f340668 | 2655 | && (sym_sec == input_sec)) |
a06ea964 NC |
2656 | return stub_type; |
2657 | ||
a06ea964 NC |
2658 | /* Determine where the call point is. */ |
2659 | location = (input_sec->output_offset | |
2660 | + input_sec->output_section->vma + rel->r_offset); | |
2661 | ||
2662 | branch_offset = (bfd_signed_vma) (destination - location); | |
2663 | ||
cec5225b | 2664 | r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
2665 | |
2666 | /* We don't want to redirect any old unconditional jump in this way, | |
2667 | only one which is being used for a sibcall, where it is | |
2668 | acceptable for the IP0 and IP1 registers to be clobbered. */ | |
a6bb11b2 | 2669 | if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26)) |
a06ea964 NC |
2670 | && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET |
2671 | || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET)) | |
2672 | { | |
2673 | stub_type = aarch64_stub_long_branch; | |
2674 | } | |
2675 | ||
2676 | return stub_type; | |
2677 | } | |
2678 | ||
2679 | /* Build a name for an entry in the stub hash table. */ | |
2680 | ||
2681 | static char * | |
cec5225b | 2682 | elfNN_aarch64_stub_name (const asection *input_section, |
a06ea964 | 2683 | const asection *sym_sec, |
cec5225b | 2684 | const struct elf_aarch64_link_hash_entry *hash, |
a06ea964 NC |
2685 | const Elf_Internal_Rela *rel) |
2686 | { | |
2687 | char *stub_name; | |
2688 | bfd_size_type len; | |
2689 | ||
2690 | if (hash) | |
2691 | { | |
2692 | len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1; | |
2693 | stub_name = bfd_malloc (len); | |
2694 | if (stub_name != NULL) | |
2695 | snprintf (stub_name, len, "%08x_%s+%" BFD_VMA_FMT "x", | |
2696 | (unsigned int) input_section->id, | |
2697 | hash->root.root.root.string, | |
2698 | rel->r_addend); | |
2699 | } | |
2700 | else | |
2701 | { | |
2702 | len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1; | |
2703 | stub_name = bfd_malloc (len); | |
2704 | if (stub_name != NULL) | |
2705 | snprintf (stub_name, len, "%08x_%x:%x+%" BFD_VMA_FMT "x", | |
2706 | (unsigned int) input_section->id, | |
2707 | (unsigned int) sym_sec->id, | |
cec5225b | 2708 | (unsigned int) ELFNN_R_SYM (rel->r_info), |
a06ea964 NC |
2709 | rel->r_addend); |
2710 | } | |
2711 | ||
2712 | return stub_name; | |
2713 | } | |
2714 | ||
2715 | /* Look up an entry in the stub hash. Stub entries are cached because | |
2716 | creating the stub name takes a bit of time. */ | |
2717 | ||
cec5225b YZ |
2718 | static struct elf_aarch64_stub_hash_entry * |
2719 | elfNN_aarch64_get_stub_entry (const asection *input_section, | |
a06ea964 NC |
2720 | const asection *sym_sec, |
2721 | struct elf_link_hash_entry *hash, | |
2722 | const Elf_Internal_Rela *rel, | |
cec5225b | 2723 | struct elf_aarch64_link_hash_table *htab) |
a06ea964 | 2724 | { |
cec5225b YZ |
2725 | struct elf_aarch64_stub_hash_entry *stub_entry; |
2726 | struct elf_aarch64_link_hash_entry *h = | |
2727 | (struct elf_aarch64_link_hash_entry *) hash; | |
a06ea964 NC |
2728 | const asection *id_sec; |
2729 | ||
2730 | if ((input_section->flags & SEC_CODE) == 0) | |
2731 | return NULL; | |
2732 | ||
2733 | /* If this input section is part of a group of sections sharing one | |
2734 | stub section, then use the id of the first section in the group. | |
2735 | Stub names need to include a section id, as there may well be | |
2736 | more than one stub used to reach say, printf, and we need to | |
2737 | distinguish between them. */ | |
2738 | id_sec = htab->stub_group[input_section->id].link_sec; | |
2739 | ||
2740 | if (h != NULL && h->stub_cache != NULL | |
2741 | && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec) | |
2742 | { | |
2743 | stub_entry = h->stub_cache; | |
2744 | } | |
2745 | else | |
2746 | { | |
2747 | char *stub_name; | |
2748 | ||
cec5225b | 2749 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel); |
a06ea964 NC |
2750 | if (stub_name == NULL) |
2751 | return NULL; | |
2752 | ||
2753 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
2754 | stub_name, FALSE, FALSE); | |
2755 | if (h != NULL) | |
2756 | h->stub_cache = stub_entry; | |
2757 | ||
2758 | free (stub_name); | |
2759 | } | |
2760 | ||
2761 | return stub_entry; | |
2762 | } | |
2763 | ||
a06ea964 | 2764 | |
66585675 MS |
2765 | /* Create a stub section. */ |
2766 | ||
2767 | static asection * | |
2768 | _bfd_aarch64_create_stub_section (asection *section, | |
2769 | struct elf_aarch64_link_hash_table *htab) | |
2770 | { | |
2771 | size_t namelen; | |
2772 | bfd_size_type len; | |
2773 | char *s_name; | |
2774 | ||
2775 | namelen = strlen (section->name); | |
2776 | len = namelen + sizeof (STUB_SUFFIX); | |
2777 | s_name = bfd_alloc (htab->stub_bfd, len); | |
2778 | if (s_name == NULL) | |
2779 | return NULL; | |
2780 | ||
2781 | memcpy (s_name, section->name, namelen); | |
2782 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
2783 | return (*htab->add_stub_section) (s_name, section); | |
2784 | } | |
2785 | ||
2786 | ||
fc6d53be MS |
2787 | /* Find or create a stub section for a link section. |
2788 | ||
2789 | Fix or create the stub section used to collect stubs attached to | |
2790 | the specified link section. */ | |
2791 | ||
2792 | static asection * | |
2793 | _bfd_aarch64_get_stub_for_link_section (asection *link_section, | |
2794 | struct elf_aarch64_link_hash_table *htab) | |
2795 | { | |
2796 | if (htab->stub_group[link_section->id].stub_sec == NULL) | |
2797 | htab->stub_group[link_section->id].stub_sec | |
2798 | = _bfd_aarch64_create_stub_section (link_section, htab); | |
2799 | return htab->stub_group[link_section->id].stub_sec; | |
2800 | } | |
2801 | ||
2802 | ||
ef857521 MS |
2803 | /* Find or create a stub section in the stub group for an input |
2804 | section. */ | |
2805 | ||
2806 | static asection * | |
2807 | _bfd_aarch64_create_or_find_stub_sec (asection *section, | |
2808 | struct elf_aarch64_link_hash_table *htab) | |
a06ea964 | 2809 | { |
fc6d53be MS |
2810 | asection *link_sec = htab->stub_group[section->id].link_sec; |
2811 | return _bfd_aarch64_get_stub_for_link_section (link_sec, htab); | |
ef857521 MS |
2812 | } |
2813 | ||
2814 | ||
2815 | /* Add a new stub entry in the stub group associated with an input | |
2816 | section to the stub hash. Not all fields of the new stub entry are | |
2817 | initialised. */ | |
2818 | ||
2819 | static struct elf_aarch64_stub_hash_entry * | |
2820 | _bfd_aarch64_add_stub_entry_in_group (const char *stub_name, | |
2821 | asection *section, | |
2822 | struct elf_aarch64_link_hash_table *htab) | |
2823 | { | |
2824 | asection *link_sec; | |
2825 | asection *stub_sec; | |
2826 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
2827 | ||
2828 | link_sec = htab->stub_group[section->id].link_sec; | |
2829 | stub_sec = _bfd_aarch64_create_or_find_stub_sec (section, htab); | |
2830 | ||
a06ea964 NC |
2831 | /* Enter this entry into the linker stub hash table. */ |
2832 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
2833 | TRUE, FALSE); | |
2834 | if (stub_entry == NULL) | |
2835 | { | |
2836 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), | |
2837 | section->owner, stub_name); | |
2838 | return NULL; | |
2839 | } | |
2840 | ||
2841 | stub_entry->stub_sec = stub_sec; | |
2842 | stub_entry->stub_offset = 0; | |
2843 | stub_entry->id_sec = link_sec; | |
2844 | ||
2845 | return stub_entry; | |
2846 | } | |
2847 | ||
4106101c MS |
2848 | /* Add a new stub entry in the final stub section to the stub hash. |
2849 | Not all fields of the new stub entry are initialised. */ | |
2850 | ||
2851 | static struct elf_aarch64_stub_hash_entry * | |
2852 | _bfd_aarch64_add_stub_entry_after (const char *stub_name, | |
2853 | asection *link_section, | |
2854 | struct elf_aarch64_link_hash_table *htab) | |
2855 | { | |
2856 | asection *stub_sec; | |
2857 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
2858 | ||
2859 | stub_sec = _bfd_aarch64_get_stub_for_link_section (link_section, htab); | |
2860 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
2861 | TRUE, FALSE); | |
2862 | if (stub_entry == NULL) | |
2863 | { | |
2864 | (*_bfd_error_handler) (_("cannot create stub entry %s"), stub_name); | |
2865 | return NULL; | |
2866 | } | |
2867 | ||
2868 | stub_entry->stub_sec = stub_sec; | |
2869 | stub_entry->stub_offset = 0; | |
2870 | stub_entry->id_sec = link_section; | |
2871 | ||
2872 | return stub_entry; | |
2873 | } | |
2874 | ||
2875 | ||
a06ea964 NC |
2876 | static bfd_boolean |
2877 | aarch64_build_one_stub (struct bfd_hash_entry *gen_entry, | |
2878 | void *in_arg ATTRIBUTE_UNUSED) | |
2879 | { | |
cec5225b | 2880 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
2881 | asection *stub_sec; |
2882 | bfd *stub_bfd; | |
2883 | bfd_byte *loc; | |
2884 | bfd_vma sym_value; | |
68fcca92 JW |
2885 | bfd_vma veneered_insn_loc; |
2886 | bfd_vma veneer_entry_loc; | |
2887 | bfd_signed_vma branch_offset = 0; | |
a06ea964 NC |
2888 | unsigned int template_size; |
2889 | const uint32_t *template; | |
2890 | unsigned int i; | |
2891 | ||
2892 | /* Massage our args to the form they really have. */ | |
cec5225b | 2893 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
2894 | |
2895 | stub_sec = stub_entry->stub_sec; | |
2896 | ||
2897 | /* Make a note of the offset within the stubs for this entry. */ | |
2898 | stub_entry->stub_offset = stub_sec->size; | |
2899 | loc = stub_sec->contents + stub_entry->stub_offset; | |
2900 | ||
2901 | stub_bfd = stub_sec->owner; | |
2902 | ||
2903 | /* This is the address of the stub destination. */ | |
2904 | sym_value = (stub_entry->target_value | |
2905 | + stub_entry->target_section->output_offset | |
2906 | + stub_entry->target_section->output_section->vma); | |
2907 | ||
2908 | if (stub_entry->stub_type == aarch64_stub_long_branch) | |
2909 | { | |
2910 | bfd_vma place = (stub_entry->stub_offset + stub_sec->output_section->vma | |
2911 | + stub_sec->output_offset); | |
2912 | ||
2913 | /* See if we can relax the stub. */ | |
2914 | if (aarch64_valid_for_adrp_p (sym_value, place)) | |
2915 | stub_entry->stub_type = aarch64_select_branch_stub (sym_value, place); | |
2916 | } | |
2917 | ||
2918 | switch (stub_entry->stub_type) | |
2919 | { | |
2920 | case aarch64_stub_adrp_branch: | |
2921 | template = aarch64_adrp_branch_stub; | |
2922 | template_size = sizeof (aarch64_adrp_branch_stub); | |
2923 | break; | |
2924 | case aarch64_stub_long_branch: | |
2925 | template = aarch64_long_branch_stub; | |
2926 | template_size = sizeof (aarch64_long_branch_stub); | |
2927 | break; | |
68fcca92 JW |
2928 | case aarch64_stub_erratum_835769_veneer: |
2929 | template = aarch64_erratum_835769_stub; | |
2930 | template_size = sizeof (aarch64_erratum_835769_stub); | |
2931 | break; | |
4106101c MS |
2932 | case aarch64_stub_erratum_843419_veneer: |
2933 | template = aarch64_erratum_843419_stub; | |
2934 | template_size = sizeof (aarch64_erratum_843419_stub); | |
2935 | break; | |
a06ea964 | 2936 | default: |
8e2fe09f | 2937 | abort (); |
a06ea964 NC |
2938 | } |
2939 | ||
2940 | for (i = 0; i < (template_size / sizeof template[0]); i++) | |
2941 | { | |
2942 | bfd_putl32 (template[i], loc); | |
2943 | loc += 4; | |
2944 | } | |
2945 | ||
2946 | template_size = (template_size + 7) & ~7; | |
2947 | stub_sec->size += template_size; | |
2948 | ||
2949 | switch (stub_entry->stub_type) | |
2950 | { | |
2951 | case aarch64_stub_adrp_branch: | |
a6bb11b2 | 2952 | if (aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21), stub_bfd, stub_sec, |
a06ea964 NC |
2953 | stub_entry->stub_offset, sym_value)) |
2954 | /* The stub would not have been relaxed if the offset was out | |
2955 | of range. */ | |
2956 | BFD_FAIL (); | |
2957 | ||
93ca8569 TB |
2958 | if (aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC), stub_bfd, stub_sec, |
2959 | stub_entry->stub_offset + 4, sym_value)) | |
2960 | BFD_FAIL (); | |
a06ea964 NC |
2961 | break; |
2962 | ||
2963 | case aarch64_stub_long_branch: | |
2964 | /* We want the value relative to the address 12 bytes back from the | |
2965 | value itself. */ | |
93ca8569 TB |
2966 | if (aarch64_relocate (AARCH64_R (PRELNN), stub_bfd, stub_sec, |
2967 | stub_entry->stub_offset + 16, sym_value + 12)) | |
2968 | BFD_FAIL (); | |
a06ea964 | 2969 | break; |
68fcca92 JW |
2970 | |
2971 | case aarch64_stub_erratum_835769_veneer: | |
2972 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
2973 | + stub_entry->target_section->output_offset | |
2974 | + stub_entry->target_value; | |
2975 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
2976 | + stub_entry->stub_sec->output_offset | |
2977 | + stub_entry->stub_offset; | |
2978 | branch_offset = veneered_insn_loc - veneer_entry_loc; | |
2979 | branch_offset >>= 2; | |
2980 | branch_offset &= 0x3ffffff; | |
2981 | bfd_putl32 (stub_entry->veneered_insn, | |
2982 | stub_sec->contents + stub_entry->stub_offset); | |
2983 | bfd_putl32 (template[1] | branch_offset, | |
2984 | stub_sec->contents + stub_entry->stub_offset + 4); | |
2985 | break; | |
2986 | ||
4106101c MS |
2987 | case aarch64_stub_erratum_843419_veneer: |
2988 | if (aarch64_relocate (AARCH64_R (JUMP26), stub_bfd, stub_sec, | |
2989 | stub_entry->stub_offset + 4, sym_value + 4)) | |
2990 | BFD_FAIL (); | |
2991 | break; | |
2992 | ||
a06ea964 | 2993 | default: |
8e2fe09f | 2994 | abort (); |
a06ea964 NC |
2995 | } |
2996 | ||
2997 | return TRUE; | |
2998 | } | |
2999 | ||
3000 | /* As above, but don't actually build the stub. Just bump offset so | |
3001 | we know stub section sizes. */ | |
3002 | ||
3003 | static bfd_boolean | |
3004 | aarch64_size_one_stub (struct bfd_hash_entry *gen_entry, | |
3005 | void *in_arg ATTRIBUTE_UNUSED) | |
3006 | { | |
cec5225b | 3007 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
3008 | int size; |
3009 | ||
3010 | /* Massage our args to the form they really have. */ | |
cec5225b | 3011 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
3012 | |
3013 | switch (stub_entry->stub_type) | |
3014 | { | |
3015 | case aarch64_stub_adrp_branch: | |
3016 | size = sizeof (aarch64_adrp_branch_stub); | |
3017 | break; | |
3018 | case aarch64_stub_long_branch: | |
3019 | size = sizeof (aarch64_long_branch_stub); | |
3020 | break; | |
68fcca92 JW |
3021 | case aarch64_stub_erratum_835769_veneer: |
3022 | size = sizeof (aarch64_erratum_835769_stub); | |
3023 | break; | |
4106101c MS |
3024 | case aarch64_stub_erratum_843419_veneer: |
3025 | size = sizeof (aarch64_erratum_843419_stub); | |
3026 | break; | |
a06ea964 | 3027 | default: |
8e2fe09f | 3028 | abort (); |
a06ea964 NC |
3029 | } |
3030 | ||
3031 | size = (size + 7) & ~7; | |
3032 | stub_entry->stub_sec->size += size; | |
3033 | return TRUE; | |
3034 | } | |
3035 | ||
3036 | /* External entry points for sizing and building linker stubs. */ | |
3037 | ||
3038 | /* Set up various things so that we can make a list of input sections | |
3039 | for each output section included in the link. Returns -1 on error, | |
3040 | 0 when no stubs will be needed, and 1 on success. */ | |
3041 | ||
3042 | int | |
cec5225b | 3043 | elfNN_aarch64_setup_section_lists (bfd *output_bfd, |
a06ea964 NC |
3044 | struct bfd_link_info *info) |
3045 | { | |
3046 | bfd *input_bfd; | |
3047 | unsigned int bfd_count; | |
7292b3ac | 3048 | unsigned int top_id, top_index; |
a06ea964 NC |
3049 | asection *section; |
3050 | asection **input_list, **list; | |
3051 | bfd_size_type amt; | |
cec5225b YZ |
3052 | struct elf_aarch64_link_hash_table *htab = |
3053 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
3054 | |
3055 | if (!is_elf_hash_table (htab)) | |
3056 | return 0; | |
3057 | ||
3058 | /* Count the number of input BFDs and find the top input section id. */ | |
3059 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
c72f2fb2 | 3060 | input_bfd != NULL; input_bfd = input_bfd->link.next) |
a06ea964 NC |
3061 | { |
3062 | bfd_count += 1; | |
3063 | for (section = input_bfd->sections; | |
3064 | section != NULL; section = section->next) | |
3065 | { | |
3066 | if (top_id < section->id) | |
3067 | top_id = section->id; | |
3068 | } | |
3069 | } | |
3070 | htab->bfd_count = bfd_count; | |
3071 | ||
3072 | amt = sizeof (struct map_stub) * (top_id + 1); | |
3073 | htab->stub_group = bfd_zmalloc (amt); | |
3074 | if (htab->stub_group == NULL) | |
3075 | return -1; | |
3076 | ||
3077 | /* We can't use output_bfd->section_count here to find the top output | |
3078 | section index as some sections may have been removed, and | |
3079 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
3080 | for (section = output_bfd->sections, top_index = 0; | |
3081 | section != NULL; section = section->next) | |
3082 | { | |
3083 | if (top_index < section->index) | |
3084 | top_index = section->index; | |
3085 | } | |
3086 | ||
3087 | htab->top_index = top_index; | |
3088 | amt = sizeof (asection *) * (top_index + 1); | |
3089 | input_list = bfd_malloc (amt); | |
3090 | htab->input_list = input_list; | |
3091 | if (input_list == NULL) | |
3092 | return -1; | |
3093 | ||
3094 | /* For sections we aren't interested in, mark their entries with a | |
3095 | value we can check later. */ | |
3096 | list = input_list + top_index; | |
3097 | do | |
3098 | *list = bfd_abs_section_ptr; | |
3099 | while (list-- != input_list); | |
3100 | ||
3101 | for (section = output_bfd->sections; | |
3102 | section != NULL; section = section->next) | |
3103 | { | |
3104 | if ((section->flags & SEC_CODE) != 0) | |
3105 | input_list[section->index] = NULL; | |
3106 | } | |
3107 | ||
3108 | return 1; | |
3109 | } | |
3110 | ||
cec5225b | 3111 | /* Used by elfNN_aarch64_next_input_section and group_sections. */ |
a06ea964 NC |
3112 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3113 | ||
3114 | /* The linker repeatedly calls this function for each input section, | |
3115 | in the order that input sections are linked into output sections. | |
3116 | Build lists of input sections to determine groupings between which | |
3117 | we may insert linker stubs. */ | |
3118 | ||
3119 | void | |
cec5225b | 3120 | elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec) |
a06ea964 | 3121 | { |
cec5225b YZ |
3122 | struct elf_aarch64_link_hash_table *htab = |
3123 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
3124 | |
3125 | if (isec->output_section->index <= htab->top_index) | |
3126 | { | |
3127 | asection **list = htab->input_list + isec->output_section->index; | |
3128 | ||
3129 | if (*list != bfd_abs_section_ptr) | |
3130 | { | |
3131 | /* Steal the link_sec pointer for our list. */ | |
3132 | /* This happens to make the list in reverse order, | |
3133 | which is what we want. */ | |
3134 | PREV_SEC (isec) = *list; | |
3135 | *list = isec; | |
3136 | } | |
3137 | } | |
3138 | } | |
3139 | ||
3140 | /* See whether we can group stub sections together. Grouping stub | |
3141 | sections may result in fewer stubs. More importantly, we need to | |
3142 | put all .init* and .fini* stubs at the beginning of the .init or | |
3143 | .fini output sections respectively, because glibc splits the | |
3144 | _init and _fini functions into multiple parts. Putting a stub in | |
3145 | the middle of a function is not a good idea. */ | |
3146 | ||
3147 | static void | |
cec5225b | 3148 | group_sections (struct elf_aarch64_link_hash_table *htab, |
a06ea964 NC |
3149 | bfd_size_type stub_group_size, |
3150 | bfd_boolean stubs_always_before_branch) | |
3151 | { | |
3152 | asection **list = htab->input_list + htab->top_index; | |
3153 | ||
3154 | do | |
3155 | { | |
3156 | asection *tail = *list; | |
3157 | ||
3158 | if (tail == bfd_abs_section_ptr) | |
3159 | continue; | |
3160 | ||
3161 | while (tail != NULL) | |
3162 | { | |
3163 | asection *curr; | |
3164 | asection *prev; | |
3165 | bfd_size_type total; | |
3166 | ||
3167 | curr = tail; | |
3168 | total = tail->size; | |
3169 | while ((prev = PREV_SEC (curr)) != NULL | |
3170 | && ((total += curr->output_offset - prev->output_offset) | |
3171 | < stub_group_size)) | |
3172 | curr = prev; | |
3173 | ||
3174 | /* OK, the size from the start of CURR to the end is less | |
3175 | than stub_group_size and thus can be handled by one stub | |
3176 | section. (Or the tail section is itself larger than | |
3177 | stub_group_size, in which case we may be toast.) | |
3178 | We should really be keeping track of the total size of | |
3179 | stubs added here, as stubs contribute to the final output | |
3180 | section size. */ | |
3181 | do | |
3182 | { | |
3183 | prev = PREV_SEC (tail); | |
3184 | /* Set up this stub group. */ | |
3185 | htab->stub_group[tail->id].link_sec = curr; | |
3186 | } | |
3187 | while (tail != curr && (tail = prev) != NULL); | |
3188 | ||
3189 | /* But wait, there's more! Input sections up to stub_group_size | |
3190 | bytes before the stub section can be handled by it too. */ | |
3191 | if (!stubs_always_before_branch) | |
3192 | { | |
3193 | total = 0; | |
3194 | while (prev != NULL | |
3195 | && ((total += tail->output_offset - prev->output_offset) | |
3196 | < stub_group_size)) | |
3197 | { | |
3198 | tail = prev; | |
3199 | prev = PREV_SEC (tail); | |
3200 | htab->stub_group[tail->id].link_sec = curr; | |
3201 | } | |
3202 | } | |
3203 | tail = prev; | |
3204 | } | |
3205 | } | |
3206 | while (list-- != htab->input_list); | |
3207 | ||
3208 | free (htab->input_list); | |
3209 | } | |
3210 | ||
3211 | #undef PREV_SEC | |
3212 | ||
68fcca92 JW |
3213 | #define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1)) |
3214 | ||
3215 | #define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5) | |
3216 | #define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5) | |
3217 | #define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5) | |
3218 | #define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5) | |
3219 | #define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5) | |
3220 | #define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5) | |
3221 | ||
3222 | #define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000) | |
3223 | #define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1) | |
3224 | #define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3) | |
3225 | #define AARCH64_ZR 0x1f | |
3226 | ||
3227 | /* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for | |
3228 | LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */ | |
3229 | ||
3230 | #define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1) | |
3231 | #define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000) | |
3232 | #define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000) | |
3233 | #define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000) | |
3234 | #define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000) | |
3235 | #define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000) | |
3236 | #define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000) | |
3237 | #define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000) | |
3238 | #define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000) | |
3239 | #define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400) | |
3240 | #define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800) | |
3241 | #define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00) | |
3242 | #define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800) | |
3243 | #define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000) | |
3244 | #define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000) | |
3245 | #define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000) | |
3246 | #define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000) | |
3247 | #define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000) | |
3248 | ||
3d14faea MS |
3249 | /* Classify an INSN if it is indeed a load/store. |
3250 | ||
3251 | Return TRUE if INSN is a LD/ST instruction otherwise return FALSE. | |
3252 | ||
3253 | For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2 | |
3254 | is set equal to RT. | |
3255 | ||
3256 | For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. | |
3257 | ||
3258 | */ | |
68fcca92 JW |
3259 | |
3260 | static bfd_boolean | |
3d14faea | 3261 | aarch64_mem_op_p (uint32_t insn, unsigned int *rt, unsigned int *rt2, |
68fcca92 JW |
3262 | bfd_boolean *pair, bfd_boolean *load) |
3263 | { | |
3264 | uint32_t opcode; | |
3265 | unsigned int r; | |
3266 | uint32_t opc = 0; | |
3267 | uint32_t v = 0; | |
3268 | uint32_t opc_v = 0; | |
3269 | ||
3270 | /* Bail out quickly if INSN doesn't fall into the the load-store | |
3271 | encoding space. */ | |
3272 | if (!AARCH64_LDST (insn)) | |
3273 | return FALSE; | |
3274 | ||
3275 | *pair = FALSE; | |
3276 | *load = FALSE; | |
3277 | if (AARCH64_LDST_EX (insn)) | |
3278 | { | |
3279 | *rt = AARCH64_RT (insn); | |
3d14faea | 3280 | *rt2 = *rt; |
68fcca92 JW |
3281 | if (AARCH64_BIT (insn, 21) == 1) |
3282 | { | |
3283 | *pair = TRUE; | |
3d14faea | 3284 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
3285 | } |
3286 | *load = AARCH64_LD (insn); | |
3287 | return TRUE; | |
3288 | } | |
3289 | else if (AARCH64_LDST_NAP (insn) | |
3290 | || AARCH64_LDSTP_PI (insn) | |
3291 | || AARCH64_LDSTP_O (insn) | |
3292 | || AARCH64_LDSTP_PRE (insn)) | |
3293 | { | |
3294 | *pair = TRUE; | |
3295 | *rt = AARCH64_RT (insn); | |
3d14faea | 3296 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
3297 | *load = AARCH64_LD (insn); |
3298 | return TRUE; | |
3299 | } | |
3300 | else if (AARCH64_LDST_PCREL (insn) | |
3301 | || AARCH64_LDST_UI (insn) | |
3302 | || AARCH64_LDST_PIIMM (insn) | |
3303 | || AARCH64_LDST_U (insn) | |
3304 | || AARCH64_LDST_PREIMM (insn) | |
3305 | || AARCH64_LDST_RO (insn) | |
3306 | || AARCH64_LDST_UIMM (insn)) | |
3307 | { | |
3308 | *rt = AARCH64_RT (insn); | |
3d14faea | 3309 | *rt2 = *rt; |
68fcca92 JW |
3310 | if (AARCH64_LDST_PCREL (insn)) |
3311 | *load = TRUE; | |
3312 | opc = AARCH64_BITS (insn, 22, 2); | |
3313 | v = AARCH64_BIT (insn, 26); | |
3314 | opc_v = opc | (v << 2); | |
3315 | *load = (opc_v == 1 || opc_v == 2 || opc_v == 3 | |
3316 | || opc_v == 5 || opc_v == 7); | |
3317 | return TRUE; | |
3318 | } | |
3319 | else if (AARCH64_LDST_SIMD_M (insn) | |
3320 | || AARCH64_LDST_SIMD_M_PI (insn)) | |
3321 | { | |
3322 | *rt = AARCH64_RT (insn); | |
3323 | *load = AARCH64_BIT (insn, 22); | |
3324 | opcode = (insn >> 12) & 0xf; | |
3325 | switch (opcode) | |
3326 | { | |
3327 | case 0: | |
3328 | case 2: | |
3d14faea | 3329 | *rt2 = *rt + 3; |
68fcca92 JW |
3330 | break; |
3331 | ||
3332 | case 4: | |
3333 | case 6: | |
3d14faea | 3334 | *rt2 = *rt + 2; |
68fcca92 JW |
3335 | break; |
3336 | ||
3337 | case 7: | |
3d14faea | 3338 | *rt2 = *rt; |
68fcca92 JW |
3339 | break; |
3340 | ||
3341 | case 8: | |
3342 | case 10: | |
3d14faea | 3343 | *rt2 = *rt + 1; |
68fcca92 JW |
3344 | break; |
3345 | ||
3346 | default: | |
3347 | return FALSE; | |
3348 | } | |
3349 | return TRUE; | |
3350 | } | |
3351 | else if (AARCH64_LDST_SIMD_S (insn) | |
3352 | || AARCH64_LDST_SIMD_S_PI (insn)) | |
3353 | { | |
3354 | *rt = AARCH64_RT (insn); | |
3355 | r = (insn >> 21) & 1; | |
3356 | *load = AARCH64_BIT (insn, 22); | |
3357 | opcode = (insn >> 13) & 0x7; | |
3358 | switch (opcode) | |
3359 | { | |
3360 | case 0: | |
3361 | case 2: | |
3362 | case 4: | |
3d14faea | 3363 | *rt2 = *rt + r; |
68fcca92 JW |
3364 | break; |
3365 | ||
3366 | case 1: | |
3367 | case 3: | |
3368 | case 5: | |
3d14faea | 3369 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
3370 | break; |
3371 | ||
3372 | case 6: | |
3d14faea | 3373 | *rt2 = *rt + r; |
68fcca92 JW |
3374 | break; |
3375 | ||
3376 | case 7: | |
3d14faea | 3377 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
3378 | break; |
3379 | ||
3380 | default: | |
3381 | return FALSE; | |
3382 | } | |
3383 | return TRUE; | |
3384 | } | |
3385 | ||
3386 | return FALSE; | |
3387 | } | |
3388 | ||
3389 | /* Return TRUE if INSN is multiply-accumulate. */ | |
3390 | ||
3391 | static bfd_boolean | |
3392 | aarch64_mlxl_p (uint32_t insn) | |
3393 | { | |
3394 | uint32_t op31 = AARCH64_OP31 (insn); | |
3395 | ||
3396 | if (AARCH64_MAC (insn) | |
3397 | && (op31 == 0 || op31 == 1 || op31 == 5) | |
3398 | /* Exclude MUL instructions which are encoded as a multiple accumulate | |
3399 | with RA = XZR. */ | |
3400 | && AARCH64_RA (insn) != AARCH64_ZR) | |
3401 | return TRUE; | |
3402 | ||
3403 | return FALSE; | |
3404 | } | |
3405 | ||
3406 | /* Some early revisions of the Cortex-A53 have an erratum (835769) whereby | |
3407 | it is possible for a 64-bit multiply-accumulate instruction to generate an | |
3408 | incorrect result. The details are quite complex and hard to | |
3409 | determine statically, since branches in the code may exist in some | |
3410 | circumstances, but all cases end with a memory (load, store, or | |
3411 | prefetch) instruction followed immediately by the multiply-accumulate | |
3412 | operation. We employ a linker patching technique, by moving the potentially | |
3413 | affected multiply-accumulate instruction into a patch region and replacing | |
3414 | the original instruction with a branch to the patch. This function checks | |
3415 | if INSN_1 is the memory operation followed by a multiply-accumulate | |
3416 | operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE | |
3417 | if INSN_1 and INSN_2 are safe. */ | |
3418 | ||
3419 | static bfd_boolean | |
3420 | aarch64_erratum_sequence (uint32_t insn_1, uint32_t insn_2) | |
3421 | { | |
3422 | uint32_t rt; | |
3d14faea | 3423 | uint32_t rt2; |
68fcca92 JW |
3424 | uint32_t rn; |
3425 | uint32_t rm; | |
3426 | uint32_t ra; | |
3427 | bfd_boolean pair; | |
3428 | bfd_boolean load; | |
3429 | ||
3430 | if (aarch64_mlxl_p (insn_2) | |
3d14faea | 3431 | && aarch64_mem_op_p (insn_1, &rt, &rt2, &pair, &load)) |
68fcca92 JW |
3432 | { |
3433 | /* Any SIMD memory op is independent of the subsequent MLA | |
3434 | by definition of the erratum. */ | |
3435 | if (AARCH64_BIT (insn_1, 26)) | |
3436 | return TRUE; | |
3437 | ||
3438 | /* If not SIMD, check for integer memory ops and MLA relationship. */ | |
3439 | rn = AARCH64_RN (insn_2); | |
3440 | ra = AARCH64_RA (insn_2); | |
3441 | rm = AARCH64_RM (insn_2); | |
3442 | ||
3443 | /* If this is a load and there's a true(RAW) dependency, we are safe | |
3444 | and this is not an erratum sequence. */ | |
3445 | if (load && | |
3446 | (rt == rn || rt == rm || rt == ra | |
3d14faea | 3447 | || (pair && (rt2 == rn || rt2 == rm || rt2 == ra)))) |
68fcca92 JW |
3448 | return FALSE; |
3449 | ||
3450 | /* We conservatively put out stubs for all other cases (including | |
3451 | writebacks). */ | |
3452 | return TRUE; | |
3453 | } | |
3454 | ||
3455 | return FALSE; | |
3456 | } | |
3457 | ||
520c7b56 JW |
3458 | /* Used to order a list of mapping symbols by address. */ |
3459 | ||
3460 | static int | |
3461 | elf_aarch64_compare_mapping (const void *a, const void *b) | |
3462 | { | |
3463 | const elf_aarch64_section_map *amap = (const elf_aarch64_section_map *) a; | |
3464 | const elf_aarch64_section_map *bmap = (const elf_aarch64_section_map *) b; | |
3465 | ||
3466 | if (amap->vma > bmap->vma) | |
3467 | return 1; | |
3468 | else if (amap->vma < bmap->vma) | |
3469 | return -1; | |
3470 | else if (amap->type > bmap->type) | |
3471 | /* Ensure results do not depend on the host qsort for objects with | |
3472 | multiple mapping symbols at the same address by sorting on type | |
3473 | after vma. */ | |
3474 | return 1; | |
3475 | else if (amap->type < bmap->type) | |
3476 | return -1; | |
3477 | else | |
3478 | return 0; | |
3479 | } | |
3480 | ||
2144188d | 3481 | |
35fee8b7 MS |
3482 | static char * |
3483 | _bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes) | |
3484 | { | |
3485 | char *stub_name = (char *) bfd_malloc | |
3486 | (strlen ("__erratum_835769_veneer_") + 16); | |
3487 | sprintf (stub_name,"__erratum_835769_veneer_%d", num_fixes); | |
3488 | return stub_name; | |
3489 | } | |
3490 | ||
4106101c | 3491 | /* Scan for Cortex-A53 erratum 835769 sequence. |
2144188d MS |
3492 | |
3493 | Return TRUE else FALSE on abnormal termination. */ | |
3494 | ||
68fcca92 | 3495 | static bfd_boolean |
5421cc6e MS |
3496 | _bfd_aarch64_erratum_835769_scan (bfd *input_bfd, |
3497 | struct bfd_link_info *info, | |
3498 | unsigned int *num_fixes_p) | |
68fcca92 JW |
3499 | { |
3500 | asection *section; | |
3501 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
68fcca92 | 3502 | unsigned int num_fixes = *num_fixes_p; |
68fcca92 JW |
3503 | |
3504 | if (htab == NULL) | |
2144188d | 3505 | return TRUE; |
68fcca92 JW |
3506 | |
3507 | for (section = input_bfd->sections; | |
3508 | section != NULL; | |
3509 | section = section->next) | |
3510 | { | |
3511 | bfd_byte *contents = NULL; | |
3512 | struct _aarch64_elf_section_data *sec_data; | |
3513 | unsigned int span; | |
3514 | ||
3515 | if (elf_section_type (section) != SHT_PROGBITS | |
3516 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
3517 | || (section->flags & SEC_EXCLUDE) != 0 | |
3518 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
3519 | || (section->output_section == bfd_abs_section_ptr)) | |
3520 | continue; | |
3521 | ||
3522 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
3523 | contents = elf_section_data (section)->this_hdr.contents; | |
3524 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
2144188d | 3525 | return FALSE; |
68fcca92 JW |
3526 | |
3527 | sec_data = elf_aarch64_section_data (section); | |
520c7b56 JW |
3528 | |
3529 | qsort (sec_data->map, sec_data->mapcount, | |
3530 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
3531 | ||
68fcca92 JW |
3532 | for (span = 0; span < sec_data->mapcount; span++) |
3533 | { | |
3534 | unsigned int span_start = sec_data->map[span].vma; | |
3535 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
3536 | ? sec_data->map[0].vma + section->size | |
3537 | : sec_data->map[span + 1].vma); | |
3538 | unsigned int i; | |
3539 | char span_type = sec_data->map[span].type; | |
3540 | ||
3541 | if (span_type == 'd') | |
3542 | continue; | |
3543 | ||
3544 | for (i = span_start; i + 4 < span_end; i += 4) | |
3545 | { | |
3546 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
3547 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
3548 | ||
3549 | if (aarch64_erratum_sequence (insn_1, insn_2)) | |
3550 | { | |
5421cc6e | 3551 | struct elf_aarch64_stub_hash_entry *stub_entry; |
35fee8b7 MS |
3552 | char *stub_name = _bfd_aarch64_erratum_835769_stub_name (num_fixes); |
3553 | if (! stub_name) | |
2144188d | 3554 | return FALSE; |
68fcca92 | 3555 | |
5421cc6e MS |
3556 | stub_entry = _bfd_aarch64_add_stub_entry_in_group (stub_name, |
3557 | section, | |
3558 | htab); | |
3559 | if (! stub_entry) | |
3560 | return FALSE; | |
68fcca92 | 3561 | |
5421cc6e MS |
3562 | stub_entry->stub_type = aarch64_stub_erratum_835769_veneer; |
3563 | stub_entry->target_section = section; | |
3564 | stub_entry->target_value = i + 4; | |
3565 | stub_entry->veneered_insn = insn_2; | |
3566 | stub_entry->output_name = stub_name; | |
68fcca92 JW |
3567 | num_fixes++; |
3568 | } | |
3569 | } | |
3570 | } | |
3571 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
3572 | free (contents); | |
3573 | } | |
3574 | ||
357d1523 MS |
3575 | *num_fixes_p = num_fixes; |
3576 | ||
2144188d | 3577 | return TRUE; |
68fcca92 JW |
3578 | } |
3579 | ||
13f622ec | 3580 | |
4106101c MS |
3581 | /* Test if instruction INSN is ADRP. */ |
3582 | ||
3583 | static bfd_boolean | |
3584 | _bfd_aarch64_adrp_p (uint32_t insn) | |
3585 | { | |
3586 | return ((insn & 0x9f000000) == 0x90000000); | |
3587 | } | |
3588 | ||
3589 | ||
3590 | /* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */ | |
3591 | ||
3592 | static bfd_boolean | |
3593 | _bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1, uint32_t insn_2, | |
3594 | uint32_t insn_3) | |
3595 | { | |
3596 | uint32_t rt; | |
3597 | uint32_t rt2; | |
3598 | bfd_boolean pair; | |
3599 | bfd_boolean load; | |
3600 | ||
3601 | return (aarch64_mem_op_p (insn_2, &rt, &rt2, &pair, &load) | |
3602 | && (!pair | |
3603 | || (pair && !load)) | |
3604 | && AARCH64_LDST_UIMM (insn_3) | |
3605 | && AARCH64_RN (insn_3) == AARCH64_RD (insn_1)); | |
3606 | } | |
3607 | ||
3608 | ||
3609 | /* Test for the presence of Cortex-A53 erratum 843419 instruction sequence. | |
3610 | ||
3611 | Return TRUE if section CONTENTS at offset I contains one of the | |
3612 | erratum 843419 sequences, otherwise return FALSE. If a sequence is | |
3613 | seen set P_VENEER_I to the offset of the final LOAD/STORE | |
3614 | instruction in the sequence. | |
3615 | */ | |
3616 | ||
3617 | static bfd_boolean | |
3618 | _bfd_aarch64_erratum_843419_p (bfd_byte *contents, bfd_vma vma, | |
3619 | bfd_vma i, bfd_vma span_end, | |
3620 | bfd_vma *p_veneer_i) | |
3621 | { | |
3622 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
3623 | ||
3624 | if (!_bfd_aarch64_adrp_p (insn_1)) | |
3625 | return FALSE; | |
3626 | ||
3627 | if (span_end < i + 12) | |
3628 | return FALSE; | |
3629 | ||
3630 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
3631 | uint32_t insn_3 = bfd_getl32 (contents + i + 8); | |
3632 | ||
3633 | if ((vma & 0xfff) != 0xff8 && (vma & 0xfff) != 0xffc) | |
3634 | return FALSE; | |
3635 | ||
3636 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_3)) | |
3637 | { | |
3638 | *p_veneer_i = i + 8; | |
3639 | return TRUE; | |
3640 | } | |
3641 | ||
3642 | if (span_end < i + 16) | |
3643 | return FALSE; | |
3644 | ||
3645 | uint32_t insn_4 = bfd_getl32 (contents + i + 12); | |
3646 | ||
3647 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_4)) | |
3648 | { | |
3649 | *p_veneer_i = i + 12; | |
3650 | return TRUE; | |
3651 | } | |
3652 | ||
3653 | return FALSE; | |
3654 | } | |
3655 | ||
3656 | ||
13f622ec MS |
3657 | /* Resize all stub sections. */ |
3658 | ||
3659 | static void | |
3660 | _bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table *htab) | |
3661 | { | |
3662 | asection *section; | |
3663 | ||
3664 | /* OK, we've added some stubs. Find out the new size of the | |
3665 | stub sections. */ | |
3666 | for (section = htab->stub_bfd->sections; | |
3667 | section != NULL; section = section->next) | |
3668 | { | |
3669 | /* Ignore non-stub sections. */ | |
3670 | if (!strstr (section->name, STUB_SUFFIX)) | |
3671 | continue; | |
3672 | section->size = 0; | |
3673 | } | |
3674 | ||
3675 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab); | |
13f622ec | 3676 | |
61865519 MS |
3677 | for (section = htab->stub_bfd->sections; |
3678 | section != NULL; section = section->next) | |
3679 | { | |
3680 | if (!strstr (section->name, STUB_SUFFIX)) | |
3681 | continue; | |
3682 | ||
3683 | if (section->size) | |
3684 | section->size += 4; | |
4106101c MS |
3685 | |
3686 | /* Ensure all stub sections have a size which is a multiple of | |
3687 | 4096. This is important in order to ensure that the insertion | |
3688 | of stub sections does not in itself move existing code around | |
3689 | in such a way that new errata sequences are created. */ | |
3690 | if (htab->fix_erratum_843419) | |
3691 | if (section->size) | |
3692 | section->size = BFD_ALIGN (section->size, 0x1000); | |
3693 | } | |
3694 | } | |
3695 | ||
3696 | ||
3697 | /* Construct an erratum 843419 workaround stub name. | |
3698 | */ | |
3699 | ||
3700 | static char * | |
3701 | _bfd_aarch64_erratum_843419_stub_name (asection *input_section, | |
3702 | bfd_vma offset) | |
3703 | { | |
3704 | const bfd_size_type len = 8 + 4 + 1 + 8 + 1 + 16 + 1; | |
3705 | char *stub_name = bfd_malloc (len); | |
3706 | ||
3707 | if (stub_name != NULL) | |
3708 | snprintf (stub_name, len, "e843419@%04x_%08x_%" BFD_VMA_FMT "x", | |
3709 | input_section->owner->id, | |
3710 | input_section->id, | |
3711 | offset); | |
3712 | return stub_name; | |
3713 | } | |
3714 | ||
3715 | /* Build a stub_entry structure describing an 843419 fixup. | |
3716 | ||
3717 | The stub_entry constructed is populated with the bit pattern INSN | |
3718 | of the instruction located at OFFSET within input SECTION. | |
3719 | ||
3720 | Returns TRUE on success. */ | |
3721 | ||
3722 | static bfd_boolean | |
3723 | _bfd_aarch64_erratum_843419_fixup (uint32_t insn, | |
3724 | bfd_vma adrp_offset, | |
3725 | bfd_vma ldst_offset, | |
3726 | asection *section, | |
3727 | struct bfd_link_info *info) | |
3728 | { | |
3729 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
3730 | char *stub_name; | |
3731 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
3732 | ||
3733 | stub_name = _bfd_aarch64_erratum_843419_stub_name (section, ldst_offset); | |
3734 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
3735 | FALSE, FALSE); | |
3736 | if (stub_entry) | |
3737 | { | |
3738 | free (stub_name); | |
3739 | return TRUE; | |
3740 | } | |
3741 | ||
3742 | /* We always place an 843419 workaround veneer in the stub section | |
3743 | attached to the input section in which an erratum sequence has | |
3744 | been found. This ensures that later in the link process (in | |
3745 | elfNN_aarch64_write_section) when we copy the veneered | |
3746 | instruction from the input section into the stub section the | |
3747 | copied instruction will have had any relocations applied to it. | |
3748 | If we placed workaround veneers in any other stub section then we | |
3749 | could not assume that all relocations have been processed on the | |
3750 | corresponding input section at the point we output the stub | |
3751 | section. | |
3752 | */ | |
3753 | ||
3754 | stub_entry = _bfd_aarch64_add_stub_entry_after (stub_name, section, htab); | |
3755 | if (stub_entry == NULL) | |
3756 | { | |
3757 | free (stub_name); | |
3758 | return FALSE; | |
3759 | } | |
3760 | ||
3761 | stub_entry->adrp_offset = adrp_offset; | |
3762 | stub_entry->target_value = ldst_offset; | |
3763 | stub_entry->target_section = section; | |
3764 | stub_entry->stub_type = aarch64_stub_erratum_843419_veneer; | |
3765 | stub_entry->veneered_insn = insn; | |
3766 | stub_entry->output_name = stub_name; | |
3767 | ||
3768 | return TRUE; | |
3769 | } | |
3770 | ||
3771 | ||
3772 | /* Scan an input section looking for the signature of erratum 843419. | |
3773 | ||
3774 | Scans input SECTION in INPUT_BFD looking for erratum 843419 | |
3775 | signatures, for each signature found a stub_entry is created | |
3776 | describing the location of the erratum for subsequent fixup. | |
3777 | ||
3778 | Return TRUE on successful scan, FALSE on failure to scan. | |
3779 | */ | |
3780 | ||
3781 | static bfd_boolean | |
3782 | _bfd_aarch64_erratum_843419_scan (bfd *input_bfd, asection *section, | |
3783 | struct bfd_link_info *info) | |
3784 | { | |
3785 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
3786 | ||
3787 | if (htab == NULL) | |
3788 | return TRUE; | |
3789 | ||
3790 | if (elf_section_type (section) != SHT_PROGBITS | |
3791 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
3792 | || (section->flags & SEC_EXCLUDE) != 0 | |
3793 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
3794 | || (section->output_section == bfd_abs_section_ptr)) | |
3795 | return TRUE; | |
3796 | ||
3797 | do | |
3798 | { | |
3799 | bfd_byte *contents = NULL; | |
3800 | struct _aarch64_elf_section_data *sec_data; | |
3801 | unsigned int span; | |
3802 | ||
3803 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
3804 | contents = elf_section_data (section)->this_hdr.contents; | |
3805 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
3806 | return FALSE; | |
3807 | ||
3808 | sec_data = elf_aarch64_section_data (section); | |
3809 | ||
3810 | qsort (sec_data->map, sec_data->mapcount, | |
3811 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
3812 | ||
3813 | for (span = 0; span < sec_data->mapcount; span++) | |
3814 | { | |
3815 | unsigned int span_start = sec_data->map[span].vma; | |
3816 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
3817 | ? sec_data->map[0].vma + section->size | |
3818 | : sec_data->map[span + 1].vma); | |
3819 | unsigned int i; | |
3820 | char span_type = sec_data->map[span].type; | |
3821 | ||
3822 | if (span_type == 'd') | |
3823 | continue; | |
3824 | ||
3825 | for (i = span_start; i + 8 < span_end; i += 4) | |
3826 | { | |
3827 | bfd_vma vma = (section->output_section->vma | |
3828 | + section->output_offset | |
3829 | + i); | |
3830 | bfd_vma veneer_i; | |
3831 | ||
3832 | if (_bfd_aarch64_erratum_843419_p | |
3833 | (contents, vma, i, span_end, &veneer_i)) | |
3834 | { | |
3835 | uint32_t insn = bfd_getl32 (contents + veneer_i); | |
3836 | ||
3837 | if (!_bfd_aarch64_erratum_843419_fixup (insn, i, veneer_i, | |
3838 | section, info)) | |
3839 | return FALSE; | |
3840 | } | |
3841 | } | |
3842 | } | |
3843 | ||
3844 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
3845 | free (contents); | |
61865519 | 3846 | } |
4106101c MS |
3847 | while (0); |
3848 | ||
3849 | return TRUE; | |
61865519 | 3850 | } |
13f622ec | 3851 | |
4106101c | 3852 | |
a06ea964 NC |
3853 | /* Determine and set the size of the stub section for a final link. |
3854 | ||
3855 | The basic idea here is to examine all the relocations looking for | |
3856 | PC-relative calls to a target that is unreachable with a "bl" | |
3857 | instruction. */ | |
3858 | ||
3859 | bfd_boolean | |
cec5225b | 3860 | elfNN_aarch64_size_stubs (bfd *output_bfd, |
a06ea964 NC |
3861 | bfd *stub_bfd, |
3862 | struct bfd_link_info *info, | |
3863 | bfd_signed_vma group_size, | |
3864 | asection * (*add_stub_section) (const char *, | |
3865 | asection *), | |
3866 | void (*layout_sections_again) (void)) | |
3867 | { | |
3868 | bfd_size_type stub_group_size; | |
3869 | bfd_boolean stubs_always_before_branch; | |
5421cc6e | 3870 | bfd_boolean stub_changed = FALSE; |
cec5225b | 3871 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); |
68fcca92 | 3872 | unsigned int num_erratum_835769_fixes = 0; |
a06ea964 NC |
3873 | |
3874 | /* Propagate mach to stub bfd, because it may not have been | |
3875 | finalized when we created stub_bfd. */ | |
3876 | bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd), | |
3877 | bfd_get_mach (output_bfd)); | |
3878 | ||
3879 | /* Stash our params away. */ | |
3880 | htab->stub_bfd = stub_bfd; | |
3881 | htab->add_stub_section = add_stub_section; | |
3882 | htab->layout_sections_again = layout_sections_again; | |
3883 | stubs_always_before_branch = group_size < 0; | |
3884 | if (group_size < 0) | |
3885 | stub_group_size = -group_size; | |
3886 | else | |
3887 | stub_group_size = group_size; | |
3888 | ||
3889 | if (stub_group_size == 1) | |
3890 | { | |
3891 | /* Default values. */ | |
b9eead84 | 3892 | /* AArch64 branch range is +-128MB. The value used is 1MB less. */ |
a06ea964 NC |
3893 | stub_group_size = 127 * 1024 * 1024; |
3894 | } | |
3895 | ||
3896 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
3897 | ||
4106101c MS |
3898 | (*htab->layout_sections_again) (); |
3899 | ||
5421cc6e MS |
3900 | if (htab->fix_erratum_835769) |
3901 | { | |
3902 | bfd *input_bfd; | |
3903 | ||
3904 | for (input_bfd = info->input_bfds; | |
3905 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
3906 | if (!_bfd_aarch64_erratum_835769_scan (input_bfd, info, | |
3907 | &num_erratum_835769_fixes)) | |
3908 | return FALSE; | |
3909 | ||
4106101c MS |
3910 | _bfd_aarch64_resize_stubs (htab); |
3911 | (*htab->layout_sections_again) (); | |
3912 | } | |
3913 | ||
3914 | if (htab->fix_erratum_843419) | |
3915 | { | |
3916 | bfd *input_bfd; | |
3917 | ||
3918 | for (input_bfd = info->input_bfds; | |
3919 | input_bfd != NULL; | |
3920 | input_bfd = input_bfd->link.next) | |
3921 | { | |
3922 | asection *section; | |
3923 | ||
3924 | for (section = input_bfd->sections; | |
3925 | section != NULL; | |
3926 | section = section->next) | |
3927 | if (!_bfd_aarch64_erratum_843419_scan (input_bfd, section, info)) | |
3928 | return FALSE; | |
3929 | } | |
3930 | ||
3931 | _bfd_aarch64_resize_stubs (htab); | |
3932 | (*htab->layout_sections_again) (); | |
5421cc6e MS |
3933 | } |
3934 | ||
a06ea964 NC |
3935 | while (1) |
3936 | { | |
3937 | bfd *input_bfd; | |
a06ea964 | 3938 | |
9b9971aa MS |
3939 | for (input_bfd = info->input_bfds; |
3940 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
a06ea964 NC |
3941 | { |
3942 | Elf_Internal_Shdr *symtab_hdr; | |
3943 | asection *section; | |
3944 | Elf_Internal_Sym *local_syms = NULL; | |
3945 | ||
3946 | /* We'll need the symbol table in a second. */ | |
3947 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3948 | if (symtab_hdr->sh_info == 0) | |
3949 | continue; | |
3950 | ||
3951 | /* Walk over each section attached to the input bfd. */ | |
3952 | for (section = input_bfd->sections; | |
3953 | section != NULL; section = section->next) | |
3954 | { | |
3955 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
3956 | ||
3957 | /* If there aren't any relocs, then there's nothing more | |
3958 | to do. */ | |
3959 | if ((section->flags & SEC_RELOC) == 0 | |
3960 | || section->reloc_count == 0 | |
3961 | || (section->flags & SEC_CODE) == 0) | |
3962 | continue; | |
3963 | ||
3964 | /* If this section is a link-once section that will be | |
3965 | discarded, then don't create any stubs. */ | |
3966 | if (section->output_section == NULL | |
3967 | || section->output_section->owner != output_bfd) | |
3968 | continue; | |
3969 | ||
3970 | /* Get the relocs. */ | |
3971 | internal_relocs | |
3972 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, | |
3973 | NULL, info->keep_memory); | |
3974 | if (internal_relocs == NULL) | |
3975 | goto error_ret_free_local; | |
3976 | ||
3977 | /* Now examine each relocation. */ | |
3978 | irela = internal_relocs; | |
3979 | irelaend = irela + section->reloc_count; | |
3980 | for (; irela < irelaend; irela++) | |
3981 | { | |
3982 | unsigned int r_type, r_indx; | |
cec5225b YZ |
3983 | enum elf_aarch64_stub_type stub_type; |
3984 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
a06ea964 NC |
3985 | asection *sym_sec; |
3986 | bfd_vma sym_value; | |
3987 | bfd_vma destination; | |
cec5225b | 3988 | struct elf_aarch64_link_hash_entry *hash; |
a06ea964 NC |
3989 | const char *sym_name; |
3990 | char *stub_name; | |
3991 | const asection *id_sec; | |
3992 | unsigned char st_type; | |
3993 | bfd_size_type len; | |
3994 | ||
cec5225b YZ |
3995 | r_type = ELFNN_R_TYPE (irela->r_info); |
3996 | r_indx = ELFNN_R_SYM (irela->r_info); | |
a06ea964 NC |
3997 | |
3998 | if (r_type >= (unsigned int) R_AARCH64_end) | |
3999 | { | |
4000 | bfd_set_error (bfd_error_bad_value); | |
4001 | error_ret_free_internal: | |
4002 | if (elf_section_data (section)->relocs == NULL) | |
4003 | free (internal_relocs); | |
4004 | goto error_ret_free_local; | |
4005 | } | |
4006 | ||
4007 | /* Only look for stubs on unconditional branch and | |
4008 | branch and link instructions. */ | |
a6bb11b2 YZ |
4009 | if (r_type != (unsigned int) AARCH64_R (CALL26) |
4010 | && r_type != (unsigned int) AARCH64_R (JUMP26)) | |
a06ea964 NC |
4011 | continue; |
4012 | ||
4013 | /* Now determine the call target, its name, value, | |
4014 | section. */ | |
4015 | sym_sec = NULL; | |
4016 | sym_value = 0; | |
4017 | destination = 0; | |
4018 | hash = NULL; | |
4019 | sym_name = NULL; | |
4020 | if (r_indx < symtab_hdr->sh_info) | |
4021 | { | |
4022 | /* It's a local symbol. */ | |
4023 | Elf_Internal_Sym *sym; | |
4024 | Elf_Internal_Shdr *hdr; | |
4025 | ||
4026 | if (local_syms == NULL) | |
4027 | { | |
4028 | local_syms | |
4029 | = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4030 | if (local_syms == NULL) | |
4031 | local_syms | |
4032 | = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
4033 | symtab_hdr->sh_info, 0, | |
4034 | NULL, NULL, NULL); | |
4035 | if (local_syms == NULL) | |
4036 | goto error_ret_free_internal; | |
4037 | } | |
4038 | ||
4039 | sym = local_syms + r_indx; | |
4040 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
4041 | sym_sec = hdr->bfd_section; | |
4042 | if (!sym_sec) | |
4043 | /* This is an undefined symbol. It can never | |
4044 | be resolved. */ | |
4045 | continue; | |
4046 | ||
4047 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
4048 | sym_value = sym->st_value; | |
4049 | destination = (sym_value + irela->r_addend | |
4050 | + sym_sec->output_offset | |
4051 | + sym_sec->output_section->vma); | |
4052 | st_type = ELF_ST_TYPE (sym->st_info); | |
4053 | sym_name | |
4054 | = bfd_elf_string_from_elf_section (input_bfd, | |
4055 | symtab_hdr->sh_link, | |
4056 | sym->st_name); | |
4057 | } | |
4058 | else | |
4059 | { | |
4060 | int e_indx; | |
4061 | ||
4062 | e_indx = r_indx - symtab_hdr->sh_info; | |
cec5225b | 4063 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
4064 | elf_sym_hashes (input_bfd)[e_indx]); |
4065 | ||
4066 | while (hash->root.root.type == bfd_link_hash_indirect | |
4067 | || hash->root.root.type == bfd_link_hash_warning) | |
cec5225b | 4068 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
4069 | hash->root.root.u.i.link); |
4070 | ||
4071 | if (hash->root.root.type == bfd_link_hash_defined | |
4072 | || hash->root.root.type == bfd_link_hash_defweak) | |
4073 | { | |
cec5225b YZ |
4074 | struct elf_aarch64_link_hash_table *globals = |
4075 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
4076 | sym_sec = hash->root.root.u.def.section; |
4077 | sym_value = hash->root.root.u.def.value; | |
4078 | /* For a destination in a shared library, | |
4079 | use the PLT stub as target address to | |
4080 | decide whether a branch stub is | |
4081 | needed. */ | |
4082 | if (globals->root.splt != NULL && hash != NULL | |
4083 | && hash->root.plt.offset != (bfd_vma) - 1) | |
4084 | { | |
4085 | sym_sec = globals->root.splt; | |
4086 | sym_value = hash->root.plt.offset; | |
4087 | if (sym_sec->output_section != NULL) | |
4088 | destination = (sym_value | |
4089 | + sym_sec->output_offset | |
4090 | + | |
4091 | sym_sec->output_section->vma); | |
4092 | } | |
4093 | else if (sym_sec->output_section != NULL) | |
4094 | destination = (sym_value + irela->r_addend | |
4095 | + sym_sec->output_offset | |
4096 | + sym_sec->output_section->vma); | |
4097 | } | |
4098 | else if (hash->root.root.type == bfd_link_hash_undefined | |
4099 | || (hash->root.root.type | |
4100 | == bfd_link_hash_undefweak)) | |
4101 | { | |
4102 | /* For a shared library, use the PLT stub as | |
4103 | target address to decide whether a long | |
4104 | branch stub is needed. | |
4105 | For absolute code, they cannot be handled. */ | |
cec5225b YZ |
4106 | struct elf_aarch64_link_hash_table *globals = |
4107 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
4108 | |
4109 | if (globals->root.splt != NULL && hash != NULL | |
4110 | && hash->root.plt.offset != (bfd_vma) - 1) | |
4111 | { | |
4112 | sym_sec = globals->root.splt; | |
4113 | sym_value = hash->root.plt.offset; | |
4114 | if (sym_sec->output_section != NULL) | |
4115 | destination = (sym_value | |
4116 | + sym_sec->output_offset | |
4117 | + | |
4118 | sym_sec->output_section->vma); | |
4119 | } | |
4120 | else | |
4121 | continue; | |
4122 | } | |
4123 | else | |
4124 | { | |
4125 | bfd_set_error (bfd_error_bad_value); | |
4126 | goto error_ret_free_internal; | |
4127 | } | |
4128 | st_type = ELF_ST_TYPE (hash->root.type); | |
4129 | sym_name = hash->root.root.root.string; | |
4130 | } | |
4131 | ||
4132 | /* Determine what (if any) linker stub is needed. */ | |
9a228467 JW |
4133 | stub_type = aarch64_type_of_stub (section, irela, sym_sec, |
4134 | st_type, destination); | |
a06ea964 NC |
4135 | if (stub_type == aarch64_stub_none) |
4136 | continue; | |
4137 | ||
4138 | /* Support for grouping stub sections. */ | |
4139 | id_sec = htab->stub_group[section->id].link_sec; | |
4140 | ||
4141 | /* Get the name of this stub. */ | |
cec5225b | 4142 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, hash, |
a06ea964 NC |
4143 | irela); |
4144 | if (!stub_name) | |
4145 | goto error_ret_free_internal; | |
4146 | ||
4147 | stub_entry = | |
4148 | aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
4149 | stub_name, FALSE, FALSE); | |
4150 | if (stub_entry != NULL) | |
4151 | { | |
4152 | /* The proper stub has already been created. */ | |
4153 | free (stub_name); | |
4154 | continue; | |
4155 | } | |
4156 | ||
ef857521 MS |
4157 | stub_entry = _bfd_aarch64_add_stub_entry_in_group |
4158 | (stub_name, section, htab); | |
a06ea964 NC |
4159 | if (stub_entry == NULL) |
4160 | { | |
4161 | free (stub_name); | |
4162 | goto error_ret_free_internal; | |
4163 | } | |
4164 | ||
2f340668 | 4165 | stub_entry->target_value = sym_value + irela->r_addend; |
a06ea964 NC |
4166 | stub_entry->target_section = sym_sec; |
4167 | stub_entry->stub_type = stub_type; | |
4168 | stub_entry->h = hash; | |
4169 | stub_entry->st_type = st_type; | |
4170 | ||
4171 | if (sym_name == NULL) | |
4172 | sym_name = "unnamed"; | |
4173 | len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name); | |
4174 | stub_entry->output_name = bfd_alloc (htab->stub_bfd, len); | |
4175 | if (stub_entry->output_name == NULL) | |
4176 | { | |
4177 | free (stub_name); | |
4178 | goto error_ret_free_internal; | |
4179 | } | |
4180 | ||
4181 | snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME, | |
4182 | sym_name); | |
4183 | ||
4184 | stub_changed = TRUE; | |
4185 | } | |
4186 | ||
4187 | /* We're done with the internal relocs, free them. */ | |
4188 | if (elf_section_data (section)->relocs == NULL) | |
4189 | free (internal_relocs); | |
4190 | } | |
4191 | } | |
4192 | ||
4193 | if (!stub_changed) | |
4194 | break; | |
4195 | ||
13f622ec | 4196 | _bfd_aarch64_resize_stubs (htab); |
a06ea964 NC |
4197 | |
4198 | /* Ask the linker to do its stuff. */ | |
4199 | (*htab->layout_sections_again) (); | |
4200 | stub_changed = FALSE; | |
4201 | } | |
4202 | ||
4203 | return TRUE; | |
4204 | ||
4205 | error_ret_free_local: | |
4206 | return FALSE; | |
4207 | } | |
4208 | ||
4209 | /* Build all the stubs associated with the current output file. The | |
4210 | stubs are kept in a hash table attached to the main linker hash | |
4211 | table. We also set up the .plt entries for statically linked PIC | |
4212 | functions here. This function is called via aarch64_elf_finish in the | |
4213 | linker. */ | |
4214 | ||
4215 | bfd_boolean | |
cec5225b | 4216 | elfNN_aarch64_build_stubs (struct bfd_link_info *info) |
a06ea964 NC |
4217 | { |
4218 | asection *stub_sec; | |
4219 | struct bfd_hash_table *table; | |
cec5225b | 4220 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 4221 | |
cec5225b | 4222 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
4223 | |
4224 | for (stub_sec = htab->stub_bfd->sections; | |
4225 | stub_sec != NULL; stub_sec = stub_sec->next) | |
4226 | { | |
4227 | bfd_size_type size; | |
4228 | ||
4229 | /* Ignore non-stub sections. */ | |
4230 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
4231 | continue; | |
4232 | ||
4233 | /* Allocate memory to hold the linker stubs. */ | |
4234 | size = stub_sec->size; | |
4235 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); | |
4236 | if (stub_sec->contents == NULL && size != 0) | |
4237 | return FALSE; | |
4238 | stub_sec->size = 0; | |
61865519 MS |
4239 | |
4240 | bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents); | |
4241 | stub_sec->size += 4; | |
a06ea964 NC |
4242 | } |
4243 | ||
4244 | /* Build the stubs as directed by the stub hash table. */ | |
4245 | table = &htab->stub_hash_table; | |
4246 | bfd_hash_traverse (table, aarch64_build_one_stub, info); | |
4247 | ||
4248 | return TRUE; | |
4249 | } | |
4250 | ||
4251 | ||
4252 | /* Add an entry to the code/data map for section SEC. */ | |
4253 | ||
4254 | static void | |
cec5225b | 4255 | elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma) |
a06ea964 NC |
4256 | { |
4257 | struct _aarch64_elf_section_data *sec_data = | |
cec5225b | 4258 | elf_aarch64_section_data (sec); |
a06ea964 NC |
4259 | unsigned int newidx; |
4260 | ||
4261 | if (sec_data->map == NULL) | |
4262 | { | |
cec5225b | 4263 | sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
4264 | sec_data->mapcount = 0; |
4265 | sec_data->mapsize = 1; | |
4266 | } | |
4267 | ||
4268 | newidx = sec_data->mapcount++; | |
4269 | ||
4270 | if (sec_data->mapcount > sec_data->mapsize) | |
4271 | { | |
4272 | sec_data->mapsize *= 2; | |
4273 | sec_data->map = bfd_realloc_or_free | |
cec5225b | 4274 | (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
4275 | } |
4276 | ||
4277 | if (sec_data->map) | |
4278 | { | |
4279 | sec_data->map[newidx].vma = vma; | |
4280 | sec_data->map[newidx].type = type; | |
4281 | } | |
4282 | } | |
4283 | ||
4284 | ||
4285 | /* Initialise maps of insn/data for input BFDs. */ | |
4286 | void | |
cec5225b | 4287 | bfd_elfNN_aarch64_init_maps (bfd *abfd) |
a06ea964 NC |
4288 | { |
4289 | Elf_Internal_Sym *isymbuf; | |
4290 | Elf_Internal_Shdr *hdr; | |
4291 | unsigned int i, localsyms; | |
4292 | ||
4293 | /* Make sure that we are dealing with an AArch64 elf binary. */ | |
4294 | if (!is_aarch64_elf (abfd)) | |
4295 | return; | |
4296 | ||
4297 | if ((abfd->flags & DYNAMIC) != 0) | |
68fcca92 | 4298 | return; |
a06ea964 NC |
4299 | |
4300 | hdr = &elf_symtab_hdr (abfd); | |
4301 | localsyms = hdr->sh_info; | |
4302 | ||
4303 | /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field | |
4304 | should contain the number of local symbols, which should come before any | |
4305 | global symbols. Mapping symbols are always local. */ | |
4306 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL); | |
4307 | ||
4308 | /* No internal symbols read? Skip this BFD. */ | |
4309 | if (isymbuf == NULL) | |
4310 | return; | |
4311 | ||
4312 | for (i = 0; i < localsyms; i++) | |
4313 | { | |
4314 | Elf_Internal_Sym *isym = &isymbuf[i]; | |
4315 | asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4316 | const char *name; | |
4317 | ||
4318 | if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL) | |
4319 | { | |
4320 | name = bfd_elf_string_from_elf_section (abfd, | |
4321 | hdr->sh_link, | |
4322 | isym->st_name); | |
4323 | ||
4324 | if (bfd_is_aarch64_special_symbol_name | |
4325 | (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP)) | |
cec5225b | 4326 | elfNN_aarch64_section_map_add (sec, name[1], isym->st_value); |
a06ea964 NC |
4327 | } |
4328 | } | |
4329 | } | |
4330 | ||
4331 | /* Set option values needed during linking. */ | |
4332 | void | |
cec5225b | 4333 | bfd_elfNN_aarch64_set_options (struct bfd *output_bfd, |
a06ea964 NC |
4334 | struct bfd_link_info *link_info, |
4335 | int no_enum_warn, | |
68fcca92 | 4336 | int no_wchar_warn, int pic_veneer, |
4106101c | 4337 | int fix_erratum_835769, |
1f56df9d JW |
4338 | int fix_erratum_843419, |
4339 | int no_apply_dynamic_relocs) | |
a06ea964 | 4340 | { |
cec5225b | 4341 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 4342 | |
cec5225b | 4343 | globals = elf_aarch64_hash_table (link_info); |
a06ea964 | 4344 | globals->pic_veneer = pic_veneer; |
68fcca92 | 4345 | globals->fix_erratum_835769 = fix_erratum_835769; |
4106101c MS |
4346 | globals->fix_erratum_843419 = fix_erratum_843419; |
4347 | globals->fix_erratum_843419_adr = TRUE; | |
1f56df9d | 4348 | globals->no_apply_dynamic_relocs = no_apply_dynamic_relocs; |
a06ea964 NC |
4349 | |
4350 | BFD_ASSERT (is_aarch64_elf (output_bfd)); | |
4351 | elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn; | |
4352 | elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn; | |
4353 | } | |
4354 | ||
a06ea964 NC |
4355 | static bfd_vma |
4356 | aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h, | |
cec5225b | 4357 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
4358 | *globals, struct bfd_link_info *info, |
4359 | bfd_vma value, bfd *output_bfd, | |
4360 | bfd_boolean *unresolved_reloc_p) | |
4361 | { | |
4362 | bfd_vma off = (bfd_vma) - 1; | |
4363 | asection *basegot = globals->root.sgot; | |
4364 | bfd_boolean dyn = globals->root.dynamic_sections_created; | |
4365 | ||
4366 | if (h != NULL) | |
4367 | { | |
a6bb11b2 | 4368 | BFD_ASSERT (basegot != NULL); |
a06ea964 NC |
4369 | off = h->got.offset; |
4370 | BFD_ASSERT (off != (bfd_vma) - 1); | |
0e1862bb L |
4371 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h) |
4372 | || (bfd_link_pic (info) | |
a06ea964 NC |
4373 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
4374 | || (ELF_ST_VISIBILITY (h->other) | |
4375 | && h->root.type == bfd_link_hash_undefweak)) | |
4376 | { | |
4377 | /* This is actually a static link, or it is a -Bsymbolic link | |
4378 | and the symbol is defined locally. We must initialize this | |
4379 | entry in the global offset table. Since the offset must | |
a6bb11b2 YZ |
4380 | always be a multiple of 8 (4 in the case of ILP32), we use |
4381 | the least significant bit to record whether we have | |
4382 | initialized it already. | |
a06ea964 NC |
4383 | When doing a dynamic link, we create a .rel(a).got relocation |
4384 | entry to initialize the value. This is done in the | |
4385 | finish_dynamic_symbol routine. */ | |
4386 | if ((off & 1) != 0) | |
4387 | off &= ~1; | |
4388 | else | |
4389 | { | |
cec5225b | 4390 | bfd_put_NN (output_bfd, value, basegot->contents + off); |
a06ea964 NC |
4391 | h->got.offset |= 1; |
4392 | } | |
4393 | } | |
4394 | else | |
4395 | *unresolved_reloc_p = FALSE; | |
4396 | ||
4397 | off = off + basegot->output_section->vma + basegot->output_offset; | |
4398 | } | |
4399 | ||
4400 | return off; | |
4401 | } | |
4402 | ||
4403 | /* Change R_TYPE to a more efficient access model where possible, | |
4404 | return the new reloc type. */ | |
4405 | ||
a6bb11b2 YZ |
4406 | static bfd_reloc_code_real_type |
4407 | aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type, | |
a06ea964 NC |
4408 | struct elf_link_hash_entry *h) |
4409 | { | |
4410 | bfd_boolean is_local = h == NULL; | |
a6bb11b2 | 4411 | |
a06ea964 NC |
4412 | switch (r_type) |
4413 | { | |
a6bb11b2 | 4414 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 4415 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a6bb11b2 YZ |
4416 | return (is_local |
4417 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4418 | : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21); | |
4419 | ||
389b8029 MS |
4420 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
4421 | return (is_local | |
4422 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4423 | : r_type); | |
4424 | ||
1ada945d MS |
4425 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
4426 | return (is_local | |
4427 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4428 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4429 | ||
0484b454 RL |
4430 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
4431 | return (is_local | |
4432 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4433 | : BFD_RELOC_AARCH64_NONE); | |
4434 | ||
4435 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
4436 | return (is_local | |
4437 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC | |
4438 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC); | |
4439 | ||
4440 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
4441 | return (is_local | |
4442 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 | |
4443 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1); | |
4444 | ||
a6bb11b2 | 4445 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
ce336788 | 4446 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 YZ |
4447 | return (is_local |
4448 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4449 | : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC); | |
4450 | ||
4451 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: | |
4452 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type; | |
4453 | ||
4454 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
4455 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type; | |
4456 | ||
043bf05a MS |
4457 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
4458 | return r_type; | |
4459 | ||
3c12b054 MS |
4460 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
4461 | return (is_local | |
4462 | ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 | |
4463 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4464 | ||
0484b454 | 4465 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
a6bb11b2 YZ |
4466 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
4467 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
a06ea964 | 4468 | /* Instructions with these relocations will become NOPs. */ |
a6bb11b2 YZ |
4469 | return BFD_RELOC_AARCH64_NONE; |
4470 | ||
259364ad JW |
4471 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
4472 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: | |
4473 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: | |
4474 | return is_local ? BFD_RELOC_AARCH64_NONE : r_type; | |
4475 | ||
ac734732 RL |
4476 | #if ARCH_SIZE == 64 |
4477 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: | |
4478 | return is_local | |
4479 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC | |
4480 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC; | |
4481 | ||
4482 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: | |
4483 | return is_local | |
4484 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 | |
4485 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1; | |
4486 | #endif | |
4487 | ||
a6bb11b2 YZ |
4488 | default: |
4489 | break; | |
a06ea964 NC |
4490 | } |
4491 | ||
4492 | return r_type; | |
4493 | } | |
4494 | ||
4495 | static unsigned int | |
a6bb11b2 | 4496 | aarch64_reloc_got_type (bfd_reloc_code_real_type r_type) |
a06ea964 NC |
4497 | { |
4498 | switch (r_type) | |
4499 | { | |
a6bb11b2 YZ |
4500 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
4501 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 4502 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 4503 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 4504 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 4505 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 4506 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 4507 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 4508 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
a06ea964 NC |
4509 | return GOT_NORMAL; |
4510 | ||
ce336788 | 4511 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 4512 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 4513 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 4514 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 4515 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
73f925cc | 4516 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 4517 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 4518 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
4519 | return GOT_TLS_GD; |
4520 | ||
0484b454 | 4521 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
a6bb11b2 YZ |
4522 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
4523 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
389b8029 | 4524 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 4525 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a6bb11b2 | 4526 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
ce336788 | 4527 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: |
1ada945d | 4528 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
4529 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
4530 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
4531 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a06ea964 NC |
4532 | return GOT_TLSDESC_GD; |
4533 | ||
a6bb11b2 | 4534 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 4535 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 4536 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 4537 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
4538 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
4539 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
a06ea964 NC |
4540 | return GOT_TLS_IE; |
4541 | ||
a6bb11b2 YZ |
4542 | default: |
4543 | break; | |
a06ea964 NC |
4544 | } |
4545 | return GOT_UNKNOWN; | |
4546 | } | |
4547 | ||
4548 | static bfd_boolean | |
4549 | aarch64_can_relax_tls (bfd *input_bfd, | |
4550 | struct bfd_link_info *info, | |
a6bb11b2 | 4551 | bfd_reloc_code_real_type r_type, |
a06ea964 NC |
4552 | struct elf_link_hash_entry *h, |
4553 | unsigned long r_symndx) | |
4554 | { | |
4555 | unsigned int symbol_got_type; | |
4556 | unsigned int reloc_got_type; | |
4557 | ||
9331eea1 | 4558 | if (! IS_AARCH64_TLS_RELAX_RELOC (r_type)) |
a06ea964 NC |
4559 | return FALSE; |
4560 | ||
cec5225b | 4561 | symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx); |
a06ea964 NC |
4562 | reloc_got_type = aarch64_reloc_got_type (r_type); |
4563 | ||
4564 | if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type)) | |
4565 | return TRUE; | |
4566 | ||
0e1862bb | 4567 | if (bfd_link_pic (info)) |
a06ea964 NC |
4568 | return FALSE; |
4569 | ||
4570 | if (h && h->root.type == bfd_link_hash_undefweak) | |
4571 | return FALSE; | |
4572 | ||
4573 | return TRUE; | |
4574 | } | |
4575 | ||
a6bb11b2 YZ |
4576 | /* Given the relocation code R_TYPE, return the relaxed bfd reloc |
4577 | enumerator. */ | |
4578 | ||
4579 | static bfd_reloc_code_real_type | |
a06ea964 NC |
4580 | aarch64_tls_transition (bfd *input_bfd, |
4581 | struct bfd_link_info *info, | |
4582 | unsigned int r_type, | |
4583 | struct elf_link_hash_entry *h, | |
4584 | unsigned long r_symndx) | |
4585 | { | |
a6bb11b2 YZ |
4586 | bfd_reloc_code_real_type bfd_r_type |
4587 | = elfNN_aarch64_bfd_reloc_from_type (r_type); | |
a06ea964 | 4588 | |
a6bb11b2 YZ |
4589 | if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx)) |
4590 | return bfd_r_type; | |
4591 | ||
4592 | return aarch64_tls_transition_without_check (bfd_r_type, h); | |
a06ea964 NC |
4593 | } |
4594 | ||
4595 | /* Return the base VMA address which should be subtracted from real addresses | |
a6bb11b2 | 4596 | when resolving R_AARCH64_TLS_DTPREL relocation. */ |
a06ea964 NC |
4597 | |
4598 | static bfd_vma | |
4599 | dtpoff_base (struct bfd_link_info *info) | |
4600 | { | |
4601 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
4602 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); | |
4603 | return elf_hash_table (info)->tls_sec->vma; | |
4604 | } | |
4605 | ||
a06ea964 NC |
4606 | /* Return the base VMA address which should be subtracted from real addresses |
4607 | when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */ | |
4608 | ||
4609 | static bfd_vma | |
4610 | tpoff_base (struct bfd_link_info *info) | |
4611 | { | |
4612 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
4613 | ||
4614 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
ac21917f | 4615 | BFD_ASSERT (htab->tls_sec != NULL); |
a06ea964 NC |
4616 | |
4617 | bfd_vma base = align_power ((bfd_vma) TCB_SIZE, | |
4618 | htab->tls_sec->alignment_power); | |
4619 | return htab->tls_sec->vma - base; | |
4620 | } | |
4621 | ||
4622 | static bfd_vma * | |
4623 | symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4624 | unsigned long r_symndx) | |
4625 | { | |
4626 | /* Calculate the address of the GOT entry for symbol | |
4627 | referred to in h. */ | |
4628 | if (h != NULL) | |
4629 | return &h->got.offset; | |
4630 | else | |
4631 | { | |
4632 | /* local symbol */ | |
4633 | struct elf_aarch64_local_symbol *l; | |
4634 | ||
cec5225b | 4635 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
4636 | return &l[r_symndx].got_offset; |
4637 | } | |
4638 | } | |
4639 | ||
4640 | static void | |
4641 | symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4642 | unsigned long r_symndx) | |
4643 | { | |
4644 | bfd_vma *p; | |
4645 | p = symbol_got_offset_ref (input_bfd, h, r_symndx); | |
4646 | *p |= 1; | |
4647 | } | |
4648 | ||
4649 | static int | |
4650 | symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4651 | unsigned long r_symndx) | |
4652 | { | |
4653 | bfd_vma value; | |
4654 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
4655 | return value & 1; | |
4656 | } | |
4657 | ||
4658 | static bfd_vma | |
4659 | symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4660 | unsigned long r_symndx) | |
4661 | { | |
4662 | bfd_vma value; | |
4663 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
4664 | value &= ~1; | |
4665 | return value; | |
4666 | } | |
4667 | ||
4668 | static bfd_vma * | |
4669 | symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4670 | unsigned long r_symndx) | |
4671 | { | |
4672 | /* Calculate the address of the GOT entry for symbol | |
4673 | referred to in h. */ | |
4674 | if (h != NULL) | |
4675 | { | |
cec5225b YZ |
4676 | struct elf_aarch64_link_hash_entry *eh; |
4677 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
4678 | return &eh->tlsdesc_got_jump_table_offset; |
4679 | } | |
4680 | else | |
4681 | { | |
4682 | /* local symbol */ | |
4683 | struct elf_aarch64_local_symbol *l; | |
4684 | ||
cec5225b | 4685 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
4686 | return &l[r_symndx].tlsdesc_got_jump_table_offset; |
4687 | } | |
4688 | } | |
4689 | ||
4690 | static void | |
4691 | symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4692 | unsigned long r_symndx) | |
4693 | { | |
4694 | bfd_vma *p; | |
4695 | p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
4696 | *p |= 1; | |
4697 | } | |
4698 | ||
4699 | static int | |
4700 | symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd, | |
4701 | struct elf_link_hash_entry *h, | |
4702 | unsigned long r_symndx) | |
4703 | { | |
4704 | bfd_vma value; | |
4705 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
4706 | return value & 1; | |
4707 | } | |
4708 | ||
4709 | static bfd_vma | |
4710 | symbol_tlsdesc_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4711 | unsigned long r_symndx) | |
4712 | { | |
4713 | bfd_vma value; | |
4714 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
4715 | value &= ~1; | |
4716 | return value; | |
4717 | } | |
4718 | ||
68fcca92 JW |
4719 | /* Data for make_branch_to_erratum_835769_stub(). */ |
4720 | ||
4721 | struct erratum_835769_branch_to_stub_data | |
4722 | { | |
4106101c | 4723 | struct bfd_link_info *info; |
68fcca92 JW |
4724 | asection *output_section; |
4725 | bfd_byte *contents; | |
4726 | }; | |
4727 | ||
4728 | /* Helper to insert branches to erratum 835769 stubs in the right | |
4729 | places for a particular section. */ | |
4730 | ||
4731 | static bfd_boolean | |
4732 | make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry, | |
4733 | void *in_arg) | |
4734 | { | |
4735 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
4736 | struct erratum_835769_branch_to_stub_data *data; | |
4737 | bfd_byte *contents; | |
4738 | unsigned long branch_insn = 0; | |
4739 | bfd_vma veneered_insn_loc, veneer_entry_loc; | |
4740 | bfd_signed_vma branch_offset; | |
4741 | unsigned int target; | |
4742 | bfd *abfd; | |
4743 | ||
4744 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
4745 | data = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
4746 | ||
4747 | if (stub_entry->target_section != data->output_section | |
4748 | || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer) | |
4749 | return TRUE; | |
4750 | ||
4751 | contents = data->contents; | |
4752 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
4753 | + stub_entry->target_section->output_offset | |
4754 | + stub_entry->target_value; | |
4755 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
4756 | + stub_entry->stub_sec->output_offset | |
4757 | + stub_entry->stub_offset; | |
4758 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
4759 | ||
4760 | abfd = stub_entry->target_section->owner; | |
4761 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4762 | (*_bfd_error_handler) | |
4763 | (_("%B: error: Erratum 835769 stub out " | |
4764 | "of range (input file too large)"), abfd); | |
4765 | ||
4766 | target = stub_entry->target_value; | |
4767 | branch_insn = 0x14000000; | |
4768 | branch_offset >>= 2; | |
4769 | branch_offset &= 0x3ffffff; | |
4770 | branch_insn |= branch_offset; | |
4771 | bfd_putl32 (branch_insn, &contents[target]); | |
4772 | ||
4773 | return TRUE; | |
4774 | } | |
4775 | ||
4106101c MS |
4776 | |
4777 | static bfd_boolean | |
4778 | _bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry, | |
4779 | void *in_arg) | |
4780 | { | |
4781 | struct elf_aarch64_stub_hash_entry *stub_entry | |
4782 | = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
4783 | struct erratum_835769_branch_to_stub_data *data | |
4784 | = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
4785 | struct bfd_link_info *info; | |
4786 | struct elf_aarch64_link_hash_table *htab; | |
4787 | bfd_byte *contents; | |
4788 | asection *section; | |
4789 | bfd *abfd; | |
4790 | bfd_vma place; | |
4791 | uint32_t insn; | |
4792 | ||
4793 | info = data->info; | |
4794 | contents = data->contents; | |
4795 | section = data->output_section; | |
4796 | ||
4797 | htab = elf_aarch64_hash_table (info); | |
4798 | ||
4799 | if (stub_entry->target_section != section | |
4800 | || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer) | |
4801 | return TRUE; | |
4802 | ||
4803 | insn = bfd_getl32 (contents + stub_entry->target_value); | |
4804 | bfd_putl32 (insn, | |
4805 | stub_entry->stub_sec->contents + stub_entry->stub_offset); | |
4806 | ||
4807 | place = (section->output_section->vma + section->output_offset | |
4808 | + stub_entry->adrp_offset); | |
4809 | insn = bfd_getl32 (contents + stub_entry->adrp_offset); | |
4810 | ||
4811 | if ((insn & AARCH64_ADRP_OP_MASK) != AARCH64_ADRP_OP) | |
4812 | abort (); | |
4813 | ||
4814 | bfd_signed_vma imm = | |
4815 | (_bfd_aarch64_sign_extend | |
4816 | ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33) | |
4817 | - (place & 0xfff)); | |
4818 | ||
4819 | if (htab->fix_erratum_843419_adr | |
4820 | && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM)) | |
4821 | { | |
4822 | insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm) | |
4823 | | AARCH64_RT (insn)); | |
4824 | bfd_putl32 (insn, contents + stub_entry->adrp_offset); | |
4825 | } | |
4826 | else | |
4827 | { | |
4828 | bfd_vma veneered_insn_loc; | |
4829 | bfd_vma veneer_entry_loc; | |
4830 | bfd_signed_vma branch_offset; | |
4831 | uint32_t branch_insn; | |
4832 | ||
4833 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
4834 | + stub_entry->target_section->output_offset | |
4835 | + stub_entry->target_value; | |
4836 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
4837 | + stub_entry->stub_sec->output_offset | |
4838 | + stub_entry->stub_offset; | |
4839 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
4840 | ||
4841 | abfd = stub_entry->target_section->owner; | |
4842 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4843 | (*_bfd_error_handler) | |
4844 | (_("%B: error: Erratum 843419 stub out " | |
4845 | "of range (input file too large)"), abfd); | |
4846 | ||
4847 | branch_insn = 0x14000000; | |
4848 | branch_offset >>= 2; | |
4849 | branch_offset &= 0x3ffffff; | |
4850 | branch_insn |= branch_offset; | |
4851 | bfd_putl32 (branch_insn, contents + stub_entry->target_value); | |
4852 | } | |
4853 | return TRUE; | |
4854 | } | |
4855 | ||
4856 | ||
68fcca92 JW |
4857 | static bfd_boolean |
4858 | elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, | |
4859 | struct bfd_link_info *link_info, | |
4860 | asection *sec, | |
4861 | bfd_byte *contents) | |
4862 | ||
4863 | { | |
4864 | struct elf_aarch64_link_hash_table *globals = | |
f872121a | 4865 | elf_aarch64_hash_table (link_info); |
68fcca92 JW |
4866 | |
4867 | if (globals == NULL) | |
4868 | return FALSE; | |
4869 | ||
4870 | /* Fix code to point to erratum 835769 stubs. */ | |
4871 | if (globals->fix_erratum_835769) | |
4872 | { | |
4873 | struct erratum_835769_branch_to_stub_data data; | |
4874 | ||
4106101c | 4875 | data.info = link_info; |
68fcca92 JW |
4876 | data.output_section = sec; |
4877 | data.contents = contents; | |
4878 | bfd_hash_traverse (&globals->stub_hash_table, | |
4879 | make_branch_to_erratum_835769_stub, &data); | |
4880 | } | |
4881 | ||
4106101c MS |
4882 | if (globals->fix_erratum_843419) |
4883 | { | |
4884 | struct erratum_835769_branch_to_stub_data data; | |
4885 | ||
4886 | data.info = link_info; | |
4887 | data.output_section = sec; | |
4888 | data.contents = contents; | |
4889 | bfd_hash_traverse (&globals->stub_hash_table, | |
4890 | _bfd_aarch64_erratum_843419_branch_to_stub, &data); | |
4891 | } | |
4892 | ||
68fcca92 JW |
4893 | return FALSE; |
4894 | } | |
4895 | ||
4e7fbb34 JW |
4896 | /* Perform a relocation as part of a final link. The input relocation type |
4897 | should be TLS relaxed. */ | |
4898 | ||
a06ea964 | 4899 | static bfd_reloc_status_type |
cec5225b | 4900 | elfNN_aarch64_final_link_relocate (reloc_howto_type *howto, |
a06ea964 NC |
4901 | bfd *input_bfd, |
4902 | bfd *output_bfd, | |
4903 | asection *input_section, | |
4904 | bfd_byte *contents, | |
4905 | Elf_Internal_Rela *rel, | |
4906 | bfd_vma value, | |
4907 | struct bfd_link_info *info, | |
4908 | asection *sym_sec, | |
4909 | struct elf_link_hash_entry *h, | |
4910 | bfd_boolean *unresolved_reloc_p, | |
4911 | bfd_boolean save_addend, | |
1419bbe5 WN |
4912 | bfd_vma *saved_addend, |
4913 | Elf_Internal_Sym *sym) | |
a06ea964 | 4914 | { |
1419bbe5 | 4915 | Elf_Internal_Shdr *symtab_hdr; |
a06ea964 | 4916 | unsigned int r_type = howto->type; |
a6bb11b2 YZ |
4917 | bfd_reloc_code_real_type bfd_r_type |
4918 | = elfNN_aarch64_bfd_reloc_from_howto (howto); | |
a06ea964 NC |
4919 | unsigned long r_symndx; |
4920 | bfd_byte *hit_data = contents + rel->r_offset; | |
b53b1bed | 4921 | bfd_vma place, off; |
a06ea964 | 4922 | bfd_signed_vma signed_addend; |
cec5225b | 4923 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 4924 | bfd_boolean weak_undef_p; |
b53b1bed | 4925 | asection *base_got; |
a06ea964 | 4926 | |
cec5225b | 4927 | globals = elf_aarch64_hash_table (info); |
a06ea964 | 4928 | |
1419bbe5 WN |
4929 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
4930 | ||
a06ea964 NC |
4931 | BFD_ASSERT (is_aarch64_elf (input_bfd)); |
4932 | ||
cec5225b | 4933 | r_symndx = ELFNN_R_SYM (rel->r_info); |
a06ea964 | 4934 | |
a06ea964 NC |
4935 | place = input_section->output_section->vma |
4936 | + input_section->output_offset + rel->r_offset; | |
4937 | ||
4938 | /* Get addend, accumulating the addend for consecutive relocs | |
4939 | which refer to the same offset. */ | |
4940 | signed_addend = saved_addend ? *saved_addend : 0; | |
4941 | signed_addend += rel->r_addend; | |
4942 | ||
4943 | weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak | |
4944 | : bfd_is_und_section (sym_sec)); | |
a6bb11b2 | 4945 | |
1419bbe5 WN |
4946 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
4947 | it here if it is defined in a non-shared object. */ | |
4948 | if (h != NULL | |
4949 | && h->type == STT_GNU_IFUNC | |
4950 | && h->def_regular) | |
4951 | { | |
4952 | asection *plt; | |
4953 | const char *name; | |
99ad26cb | 4954 | bfd_vma addend = 0; |
1419bbe5 WN |
4955 | |
4956 | if ((input_section->flags & SEC_ALLOC) == 0 | |
4957 | || h->plt.offset == (bfd_vma) -1) | |
4958 | abort (); | |
4959 | ||
4960 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
4961 | plt = globals->root.splt ? globals->root.splt : globals->root.iplt; | |
4962 | value = (plt->output_section->vma + plt->output_offset + h->plt.offset); | |
4963 | ||
4964 | switch (bfd_r_type) | |
4965 | { | |
4966 | default: | |
4967 | if (h->root.root.string) | |
4968 | name = h->root.root.string; | |
4969 | else | |
4970 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
4971 | NULL); | |
4972 | (*_bfd_error_handler) | |
4973 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
4974 | "symbol `%s' isn't handled by %s"), input_bfd, | |
4975 | howto->name, name, __FUNCTION__); | |
4976 | bfd_set_error (bfd_error_bad_value); | |
4977 | return FALSE; | |
4978 | ||
4979 | case BFD_RELOC_AARCH64_NN: | |
4980 | if (rel->r_addend != 0) | |
4981 | { | |
4982 | if (h->root.root.string) | |
4983 | name = h->root.root.string; | |
4984 | else | |
4985 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
4986 | sym, NULL); | |
4987 | (*_bfd_error_handler) | |
4988 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
4989 | "symbol `%s' has non-zero addend: %d"), | |
4990 | input_bfd, howto->name, name, rel->r_addend); | |
4991 | bfd_set_error (bfd_error_bad_value); | |
4992 | return FALSE; | |
4993 | } | |
4994 | ||
4995 | /* Generate dynamic relocation only when there is a | |
4996 | non-GOT reference in a shared object. */ | |
0e1862bb | 4997 | if (bfd_link_pic (info) && h->non_got_ref) |
1419bbe5 WN |
4998 | { |
4999 | Elf_Internal_Rela outrel; | |
5000 | asection *sreloc; | |
5001 | ||
5002 | /* Need a dynamic relocation to get the real function | |
5003 | address. */ | |
5004 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
5005 | info, | |
5006 | input_section, | |
5007 | rel->r_offset); | |
5008 | if (outrel.r_offset == (bfd_vma) -1 | |
5009 | || outrel.r_offset == (bfd_vma) -2) | |
5010 | abort (); | |
5011 | ||
5012 | outrel.r_offset += (input_section->output_section->vma | |
5013 | + input_section->output_offset); | |
5014 | ||
5015 | if (h->dynindx == -1 | |
5016 | || h->forced_local | |
0e1862bb | 5017 | || bfd_link_executable (info)) |
1419bbe5 WN |
5018 | { |
5019 | /* This symbol is resolved locally. */ | |
5020 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
5021 | outrel.r_addend = (h->root.u.def.value | |
5022 | + h->root.u.def.section->output_section->vma | |
5023 | + h->root.u.def.section->output_offset); | |
5024 | } | |
5025 | else | |
5026 | { | |
5027 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); | |
5028 | outrel.r_addend = 0; | |
5029 | } | |
5030 | ||
5031 | sreloc = globals->root.irelifunc; | |
5032 | elf_append_rela (output_bfd, sreloc, &outrel); | |
5033 | ||
5034 | /* If this reloc is against an external symbol, we | |
5035 | do not want to fiddle with the addend. Otherwise, | |
5036 | we need to include the symbol value so that it | |
5037 | becomes an addend for the dynamic reloc. For an | |
5038 | internal symbol, we have updated addend. */ | |
5039 | return bfd_reloc_ok; | |
5040 | } | |
5041 | /* FALLTHROUGH */ | |
1419bbe5 | 5042 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 5043 | case BFD_RELOC_AARCH64_JUMP26: |
1419bbe5 WN |
5044 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5045 | signed_addend, | |
5046 | weak_undef_p); | |
5047 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, | |
5048 | howto, value); | |
1419bbe5 WN |
5049 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
5050 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 5051 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 5052 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 5053 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
dc8008f5 | 5054 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 5055 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
a2e1db00 | 5056 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
ce336788 | 5057 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
1419bbe5 WN |
5058 | base_got = globals->root.sgot; |
5059 | off = h->got.offset; | |
5060 | ||
5061 | if (base_got == NULL) | |
5062 | abort (); | |
5063 | ||
5064 | if (off == (bfd_vma) -1) | |
5065 | { | |
5066 | bfd_vma plt_index; | |
5067 | ||
5068 | /* We can't use h->got.offset here to save state, or | |
5069 | even just remember the offset, as finish_dynamic_symbol | |
5070 | would use that as offset into .got. */ | |
5071 | ||
5072 | if (globals->root.splt != NULL) | |
5073 | { | |
b1ee0cc4 WN |
5074 | plt_index = ((h->plt.offset - globals->plt_header_size) / |
5075 | globals->plt_entry_size); | |
1419bbe5 WN |
5076 | off = (plt_index + 3) * GOT_ENTRY_SIZE; |
5077 | base_got = globals->root.sgotplt; | |
5078 | } | |
5079 | else | |
5080 | { | |
5081 | plt_index = h->plt.offset / globals->plt_entry_size; | |
5082 | off = plt_index * GOT_ENTRY_SIZE; | |
5083 | base_got = globals->root.igotplt; | |
5084 | } | |
5085 | ||
5086 | if (h->dynindx == -1 | |
5087 | || h->forced_local | |
5088 | || info->symbolic) | |
5089 | { | |
5090 | /* This references the local definition. We must | |
5091 | initialize this entry in the global offset table. | |
5092 | Since the offset must always be a multiple of 8, | |
5093 | we use the least significant bit to record | |
5094 | whether we have initialized it already. | |
5095 | ||
5096 | When doing a dynamic link, we create a .rela.got | |
5097 | relocation entry to initialize the value. This | |
5098 | is done in the finish_dynamic_symbol routine. */ | |
5099 | if ((off & 1) != 0) | |
5100 | off &= ~1; | |
5101 | else | |
5102 | { | |
5103 | bfd_put_NN (output_bfd, value, | |
5104 | base_got->contents + off); | |
5105 | /* Note that this is harmless as -1 | 1 still is -1. */ | |
5106 | h->got.offset |= 1; | |
5107 | } | |
5108 | } | |
5109 | value = (base_got->output_section->vma | |
5110 | + base_got->output_offset + off); | |
5111 | } | |
5112 | else | |
5113 | value = aarch64_calculate_got_entry_vma (h, globals, info, | |
5114 | value, output_bfd, | |
5115 | unresolved_reloc_p); | |
a0becb89 RL |
5116 | |
5117 | switch (bfd_r_type) | |
5118 | { | |
5119 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: | |
5120 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: | |
5121 | addend = (globals->root.sgot->output_section->vma | |
5122 | + globals->root.sgot->output_offset); | |
5123 | break; | |
dc8008f5 | 5124 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 5125 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
a2e1db00 RL |
5126 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
5127 | value = (value - globals->root.sgot->output_section->vma | |
5128 | - globals->root.sgot->output_offset); | |
a0becb89 RL |
5129 | default: |
5130 | break; | |
5131 | } | |
5132 | ||
1419bbe5 | 5133 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
99ad26cb | 5134 | addend, weak_undef_p); |
1419bbe5 | 5135 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value); |
1419bbe5 | 5136 | case BFD_RELOC_AARCH64_ADD_LO12: |
ce336788 | 5137 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: |
1419bbe5 WN |
5138 | break; |
5139 | } | |
5140 | } | |
5141 | ||
a6bb11b2 | 5142 | switch (bfd_r_type) |
a06ea964 | 5143 | { |
a6bb11b2 | 5144 | case BFD_RELOC_AARCH64_NONE: |
0484b454 | 5145 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
a6bb11b2 | 5146 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
0484b454 | 5147 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
a06ea964 NC |
5148 | *unresolved_reloc_p = FALSE; |
5149 | return bfd_reloc_ok; | |
5150 | ||
a6bb11b2 | 5151 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
5152 | |
5153 | /* When generating a shared object or relocatable executable, these | |
5154 | relocations are copied into the output file to be resolved at | |
5155 | run time. */ | |
0e1862bb L |
5156 | if (((bfd_link_pic (info) == TRUE) |
5157 | || globals->root.is_relocatable_executable) | |
a06ea964 NC |
5158 | && (input_section->flags & SEC_ALLOC) |
5159 | && (h == NULL | |
5160 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5161 | || h->root.type != bfd_link_hash_undefweak)) | |
5162 | { | |
5163 | Elf_Internal_Rela outrel; | |
5164 | bfd_byte *loc; | |
5165 | bfd_boolean skip, relocate; | |
5166 | asection *sreloc; | |
5167 | ||
5168 | *unresolved_reloc_p = FALSE; | |
5169 | ||
a06ea964 NC |
5170 | skip = FALSE; |
5171 | relocate = FALSE; | |
5172 | ||
5173 | outrel.r_addend = signed_addend; | |
5174 | outrel.r_offset = | |
5175 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
5176 | rel->r_offset); | |
5177 | if (outrel.r_offset == (bfd_vma) - 1) | |
5178 | skip = TRUE; | |
5179 | else if (outrel.r_offset == (bfd_vma) - 2) | |
5180 | { | |
5181 | skip = TRUE; | |
5182 | relocate = TRUE; | |
5183 | } | |
5184 | ||
5185 | outrel.r_offset += (input_section->output_section->vma | |
5186 | + input_section->output_offset); | |
5187 | ||
5188 | if (skip) | |
5189 | memset (&outrel, 0, sizeof outrel); | |
5190 | else if (h != NULL | |
5191 | && h->dynindx != -1 | |
0e1862bb L |
5192 | && (!bfd_link_pic (info) |
5193 | || !SYMBOLIC_BIND (info, h) | |
5194 | || !h->def_regular)) | |
cec5225b | 5195 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); |
a06ea964 NC |
5196 | else |
5197 | { | |
5198 | int symbol; | |
5199 | ||
5200 | /* On SVR4-ish systems, the dynamic loader cannot | |
5201 | relocate the text and data segments independently, | |
5202 | so the symbol does not matter. */ | |
5203 | symbol = 0; | |
1f56df9d | 5204 | relocate = globals->no_apply_dynamic_relocs ? FALSE : TRUE; |
a6bb11b2 | 5205 | outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE)); |
a06ea964 NC |
5206 | outrel.r_addend += value; |
5207 | } | |
5208 | ||
1419bbe5 WN |
5209 | sreloc = elf_section_data (input_section)->sreloc; |
5210 | if (sreloc == NULL || sreloc->contents == NULL) | |
5211 | return bfd_reloc_notsupported; | |
5212 | ||
5213 | loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals); | |
cec5225b | 5214 | bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc); |
a06ea964 | 5215 | |
1419bbe5 | 5216 | if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size) |
a06ea964 NC |
5217 | { |
5218 | /* Sanity to check that we have previously allocated | |
5219 | sufficient space in the relocation section for the | |
5220 | number of relocations we actually want to emit. */ | |
5221 | abort (); | |
5222 | } | |
5223 | ||
5224 | /* If this reloc is against an external symbol, we do not want to | |
5225 | fiddle with the addend. Otherwise, we need to include the symbol | |
5226 | value so that it becomes an addend for the dynamic reloc. */ | |
5227 | if (!relocate) | |
5228 | return bfd_reloc_ok; | |
5229 | ||
5230 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5231 | contents, rel->r_offset, value, | |
5232 | signed_addend); | |
5233 | } | |
5234 | else | |
5235 | value += signed_addend; | |
5236 | break; | |
5237 | ||
a6bb11b2 | 5238 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 5239 | case BFD_RELOC_AARCH64_JUMP26: |
a06ea964 NC |
5240 | { |
5241 | asection *splt = globals->root.splt; | |
5242 | bfd_boolean via_plt_p = | |
5243 | splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1; | |
5244 | ||
5245 | /* A call to an undefined weak symbol is converted to a jump to | |
5246 | the next instruction unless a PLT entry will be created. | |
5247 | The jump to the next instruction is optimized as a NOP. | |
5248 | Do the same for local undefined symbols. */ | |
5249 | if (weak_undef_p && ! via_plt_p) | |
5250 | { | |
5251 | bfd_putl32 (INSN_NOP, hit_data); | |
5252 | return bfd_reloc_ok; | |
5253 | } | |
5254 | ||
5255 | /* If the call goes through a PLT entry, make sure to | |
5256 | check distance to the right destination address. */ | |
5257 | if (via_plt_p) | |
07f9ddfe JW |
5258 | value = (splt->output_section->vma |
5259 | + splt->output_offset + h->plt.offset); | |
5260 | ||
5261 | /* Check if a stub has to be inserted because the destination | |
5262 | is too far away. */ | |
5263 | struct elf_aarch64_stub_hash_entry *stub_entry = NULL; | |
2f340668 JW |
5264 | |
5265 | /* If the branch destination is directed to plt stub, "value" will be | |
5266 | the final destination, otherwise we should plus signed_addend, it may | |
5267 | contain non-zero value, for example call to local function symbol | |
5268 | which are turned into "sec_sym + sec_off", and sec_off is kept in | |
5269 | signed_addend. */ | |
5270 | if (! aarch64_valid_branch_p (via_plt_p ? value : value + signed_addend, | |
5271 | place)) | |
07f9ddfe JW |
5272 | /* The target is out of reach, so redirect the branch to |
5273 | the local stub for this function. */ | |
5274 | stub_entry = elfNN_aarch64_get_stub_entry (input_section, sym_sec, h, | |
5275 | rel, globals); | |
5276 | if (stub_entry != NULL) | |
2f340668 JW |
5277 | { |
5278 | value = (stub_entry->stub_offset | |
5279 | + stub_entry->stub_sec->output_offset | |
5280 | + stub_entry->stub_sec->output_section->vma); | |
5281 | ||
5282 | /* We have redirected the destination to stub entry address, | |
5283 | so ignore any addend record in the original rela entry. */ | |
5284 | signed_addend = 0; | |
5285 | } | |
a06ea964 | 5286 | } |
caed7120 YZ |
5287 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5288 | signed_addend, weak_undef_p); | |
07f9ddfe | 5289 | *unresolved_reloc_p = FALSE; |
a06ea964 NC |
5290 | break; |
5291 | ||
dcbd20eb JW |
5292 | case BFD_RELOC_AARCH64_16_PCREL: |
5293 | case BFD_RELOC_AARCH64_32_PCREL: | |
5294 | case BFD_RELOC_AARCH64_64_PCREL: | |
ce336788 JW |
5295 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
5296 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
5297 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
5298 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
0e1862bb | 5299 | if (bfd_link_pic (info) |
dcbd20eb JW |
5300 | && (input_section->flags & SEC_ALLOC) != 0 |
5301 | && (input_section->flags & SEC_READONLY) != 0 | |
5302 | && h != NULL | |
5303 | && !h->def_regular) | |
5304 | { | |
5305 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
5306 | ||
5307 | (*_bfd_error_handler) | |
5308 | (_("%B: relocation %s against external symbol `%s' can not be used" | |
5309 | " when making a shared object; recompile with -fPIC"), | |
5310 | input_bfd, elfNN_aarch64_howto_table[howto_index].name, | |
5311 | h->root.root.string); | |
5312 | bfd_set_error (bfd_error_bad_value); | |
5313 | return FALSE; | |
5314 | } | |
5315 | ||
a6bb11b2 | 5316 | case BFD_RELOC_AARCH64_16: |
92d77487 RL |
5317 | #if ARCH_SIZE == 64 |
5318 | case BFD_RELOC_AARCH64_32: | |
5319 | #endif | |
a6bb11b2 | 5320 | case BFD_RELOC_AARCH64_ADD_LO12: |
a6bb11b2 | 5321 | case BFD_RELOC_AARCH64_BRANCH19: |
ce336788 | 5322 | case BFD_RELOC_AARCH64_LDST128_LO12: |
a6bb11b2 YZ |
5323 | case BFD_RELOC_AARCH64_LDST16_LO12: |
5324 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
5325 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
ce336788 | 5326 | case BFD_RELOC_AARCH64_LDST8_LO12: |
a6bb11b2 YZ |
5327 | case BFD_RELOC_AARCH64_MOVW_G0: |
5328 | case BFD_RELOC_AARCH64_MOVW_G0_NC: | |
ce336788 | 5329 | case BFD_RELOC_AARCH64_MOVW_G0_S: |
a6bb11b2 YZ |
5330 | case BFD_RELOC_AARCH64_MOVW_G1: |
5331 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
ce336788 | 5332 | case BFD_RELOC_AARCH64_MOVW_G1_S: |
a6bb11b2 YZ |
5333 | case BFD_RELOC_AARCH64_MOVW_G2: |
5334 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
ce336788 | 5335 | case BFD_RELOC_AARCH64_MOVW_G2_S: |
a6bb11b2 | 5336 | case BFD_RELOC_AARCH64_MOVW_G3: |
a6bb11b2 | 5337 | case BFD_RELOC_AARCH64_TSTBR14: |
caed7120 YZ |
5338 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5339 | signed_addend, weak_undef_p); | |
a06ea964 NC |
5340 | break; |
5341 | ||
a6bb11b2 YZ |
5342 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
5343 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 5344 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 5345 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 5346 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 5347 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
a06ea964 NC |
5348 | if (globals->root.sgot == NULL) |
5349 | BFD_ASSERT (h != NULL); | |
5350 | ||
5351 | if (h != NULL) | |
5352 | { | |
99ad26cb | 5353 | bfd_vma addend = 0; |
a06ea964 NC |
5354 | value = aarch64_calculate_got_entry_vma (h, globals, info, value, |
5355 | output_bfd, | |
5356 | unresolved_reloc_p); | |
7018c030 JW |
5357 | if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
5358 | || bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
99ad26cb JW |
5359 | addend = (globals->root.sgot->output_section->vma |
5360 | + globals->root.sgot->output_offset); | |
caed7120 | 5361 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
99ad26cb | 5362 | addend, weak_undef_p); |
a06ea964 | 5363 | } |
b53b1bed JW |
5364 | else |
5365 | { | |
99ad26cb | 5366 | bfd_vma addend = 0; |
b53b1bed JW |
5367 | struct elf_aarch64_local_symbol *locals |
5368 | = elf_aarch64_locals (input_bfd); | |
5369 | ||
5370 | if (locals == NULL) | |
5371 | { | |
5372 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
5373 | (*_bfd_error_handler) | |
5374 | (_("%B: Local symbol descriptor table be NULL when applying " | |
5375 | "relocation %s against local symbol"), | |
5376 | input_bfd, elfNN_aarch64_howto_table[howto_index].name); | |
5377 | abort (); | |
5378 | } | |
5379 | ||
5380 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
5381 | base_got = globals->root.sgot; | |
5382 | bfd_vma got_entry_addr = (base_got->output_section->vma | |
5383 | + base_got->output_offset + off); | |
5384 | ||
5385 | if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
5386 | { | |
5387 | bfd_put_64 (output_bfd, value, base_got->contents + off); | |
5388 | ||
0e1862bb | 5389 | if (bfd_link_pic (info)) |
b53b1bed JW |
5390 | { |
5391 | asection *s; | |
5392 | Elf_Internal_Rela outrel; | |
5393 | ||
5394 | /* For local symbol, we have done absolute relocation in static | |
5395 | linking stageh. While for share library, we need to update | |
5396 | the content of GOT entry according to the share objects | |
5397 | loading base address. So we need to generate a | |
5398 | R_AARCH64_RELATIVE reloc for dynamic linker. */ | |
5399 | s = globals->root.srelgot; | |
5400 | if (s == NULL) | |
5401 | abort (); | |
5402 | ||
5403 | outrel.r_offset = got_entry_addr; | |
5404 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); | |
5405 | outrel.r_addend = value; | |
5406 | elf_append_rela (output_bfd, s, &outrel); | |
5407 | } | |
5408 | ||
5409 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
5410 | } | |
5411 | ||
5412 | /* Update the relocation value to GOT entry addr as we have transformed | |
5413 | the direct data access into indirect data access through GOT. */ | |
5414 | value = got_entry_addr; | |
99ad26cb | 5415 | |
7018c030 JW |
5416 | if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
5417 | || bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
99ad26cb JW |
5418 | addend = base_got->output_section->vma + base_got->output_offset; |
5419 | ||
5420 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, | |
5421 | addend, weak_undef_p); | |
b53b1bed JW |
5422 | } |
5423 | ||
a06ea964 NC |
5424 | break; |
5425 | ||
a2e1db00 | 5426 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
dc8008f5 | 5427 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 5428 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
a2e1db00 RL |
5429 | if (h != NULL) |
5430 | value = aarch64_calculate_got_entry_vma (h, globals, info, value, | |
5431 | output_bfd, | |
5432 | unresolved_reloc_p); | |
5433 | else | |
5434 | { | |
5435 | struct elf_aarch64_local_symbol *locals | |
5436 | = elf_aarch64_locals (input_bfd); | |
5437 | ||
5438 | if (locals == NULL) | |
5439 | { | |
5440 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
5441 | (*_bfd_error_handler) | |
5442 | (_("%B: Local symbol descriptor table be NULL when applying " | |
5443 | "relocation %s against local symbol"), | |
5444 | input_bfd, elfNN_aarch64_howto_table[howto_index].name); | |
5445 | abort (); | |
5446 | } | |
5447 | ||
5448 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
5449 | base_got = globals->root.sgot; | |
5450 | if (base_got == NULL) | |
5451 | abort (); | |
5452 | ||
5453 | bfd_vma got_entry_addr = (base_got->output_section->vma | |
5454 | + base_got->output_offset + off); | |
5455 | ||
5456 | if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
5457 | { | |
5458 | bfd_put_64 (output_bfd, value, base_got->contents + off); | |
5459 | ||
5460 | if (bfd_link_pic (info)) | |
5461 | { | |
5462 | asection *s; | |
5463 | Elf_Internal_Rela outrel; | |
5464 | ||
5465 | /* For local symbol, we have done absolute relocation in static | |
5466 | linking stage. While for share library, we need to update | |
5467 | the content of GOT entry according to the share objects | |
5468 | loading base address. So we need to generate a | |
5469 | R_AARCH64_RELATIVE reloc for dynamic linker. */ | |
5470 | s = globals->root.srelgot; | |
5471 | if (s == NULL) | |
5472 | abort (); | |
5473 | ||
5474 | outrel.r_offset = got_entry_addr; | |
5475 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); | |
5476 | outrel.r_addend = value; | |
5477 | elf_append_rela (output_bfd, s, &outrel); | |
5478 | } | |
5479 | ||
5480 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
5481 | } | |
5482 | } | |
5483 | ||
5484 | /* Update the relocation value to GOT entry addr as we have transformed | |
5485 | the direct data access into indirect data access through GOT. */ | |
5486 | value = symbol_got_offset (input_bfd, h, r_symndx); | |
5487 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, | |
5488 | 0, weak_undef_p); | |
5489 | *unresolved_reloc_p = FALSE; | |
5490 | break; | |
5491 | ||
ce336788 | 5492 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 5493 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 5494 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 5495 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 5496 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 5497 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 5498 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
73f925cc | 5499 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 5500 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 5501 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
5502 | if (globals->root.sgot == NULL) |
5503 | return bfd_reloc_notsupported; | |
5504 | ||
5505 | value = (symbol_got_offset (input_bfd, h, r_symndx) | |
5506 | + globals->root.sgot->output_section->vma | |
f44a1f8e | 5507 | + globals->root.sgot->output_offset); |
a06ea964 | 5508 | |
caed7120 YZ |
5509 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5510 | 0, weak_undef_p); | |
a06ea964 NC |
5511 | *unresolved_reloc_p = FALSE; |
5512 | break; | |
5513 | ||
7ba7cfe4 | 5514 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 5515 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
3b957e5b RL |
5516 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
5517 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
94facae3 RL |
5518 | if (globals->root.sgot == NULL) |
5519 | return bfd_reloc_notsupported; | |
5520 | ||
5521 | value = symbol_got_offset (input_bfd, h, r_symndx); | |
5522 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, | |
5523 | 0, weak_undef_p); | |
5524 | *unresolved_reloc_p = FALSE; | |
5525 | break; | |
5526 | ||
6ffe9a1b | 5527 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12: |
40fbed84 | 5528 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12: |
753999c1 | 5529 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC: |
07c9aa07 JW |
5530 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12: |
5531 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC: | |
5532 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12: | |
5533 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC: | |
5534 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12: | |
5535 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC: | |
5536 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12: | |
5537 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC: | |
6ffe9a1b JW |
5538 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0: |
5539 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC: | |
5540 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1: | |
5541 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC: | |
5542 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2: | |
40fbed84 JW |
5543 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5544 | signed_addend - dtpoff_base (info), | |
5545 | weak_undef_p); | |
5546 | break; | |
5547 | ||
a6bb11b2 YZ |
5548 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
5549 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: | |
5550 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: | |
5551 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: | |
5552 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
5553 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: | |
5554 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
5555 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
caed7120 YZ |
5556 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5557 | signed_addend - tpoff_base (info), | |
5558 | weak_undef_p); | |
a06ea964 NC |
5559 | *unresolved_reloc_p = FALSE; |
5560 | break; | |
5561 | ||
7bcccb57 | 5562 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
a6bb11b2 | 5563 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 5564 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 5565 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
7bcccb57 | 5566 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: |
1ada945d | 5567 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
5568 | if (globals->root.sgot == NULL) |
5569 | return bfd_reloc_notsupported; | |
a06ea964 NC |
5570 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) |
5571 | + globals->root.sgotplt->output_section->vma | |
f44a1f8e | 5572 | + globals->root.sgotplt->output_offset |
a06ea964 NC |
5573 | + globals->sgotplt_jump_table_size); |
5574 | ||
caed7120 YZ |
5575 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5576 | 0, weak_undef_p); | |
a06ea964 NC |
5577 | *unresolved_reloc_p = FALSE; |
5578 | break; | |
5579 | ||
0484b454 RL |
5580 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
5581 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
5582 | if (globals->root.sgot == NULL) | |
5583 | return bfd_reloc_notsupported; | |
5584 | ||
5585 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) | |
5586 | + globals->root.sgotplt->output_section->vma | |
5587 | + globals->root.sgotplt->output_offset | |
5588 | + globals->sgotplt_jump_table_size); | |
5589 | ||
5590 | value -= (globals->root.sgot->output_section->vma | |
5591 | + globals->root.sgot->output_offset); | |
5592 | ||
5593 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, | |
5594 | 0, weak_undef_p); | |
5595 | *unresolved_reloc_p = FALSE; | |
5596 | break; | |
5597 | ||
a06ea964 NC |
5598 | default: |
5599 | return bfd_reloc_notsupported; | |
5600 | } | |
5601 | ||
5602 | if (saved_addend) | |
5603 | *saved_addend = value; | |
5604 | ||
5605 | /* Only apply the final relocation in a sequence. */ | |
5606 | if (save_addend) | |
5607 | return bfd_reloc_continue; | |
5608 | ||
caed7120 YZ |
5609 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, |
5610 | howto, value); | |
a06ea964 NC |
5611 | } |
5612 | ||
5613 | /* Handle TLS relaxations. Relaxing is possible for symbols that use | |
5614 | R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static | |
5615 | link. | |
5616 | ||
5617 | Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller | |
5618 | is to then call final_link_relocate. Return other values in the | |
5619 | case of error. */ | |
5620 | ||
5621 | static bfd_reloc_status_type | |
cec5225b | 5622 | elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals, |
a06ea964 | 5623 | bfd *input_bfd, bfd_byte *contents, |
06d2788c | 5624 | Elf_Internal_Rela *rel, struct elf_link_hash_entry *h) |
a06ea964 NC |
5625 | { |
5626 | bfd_boolean is_local = h == NULL; | |
cec5225b | 5627 | unsigned int r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
5628 | unsigned long insn; |
5629 | ||
5630 | BFD_ASSERT (globals && input_bfd && contents && rel); | |
5631 | ||
a6bb11b2 | 5632 | switch (elfNN_aarch64_bfd_reloc_from_type (r_type)) |
a06ea964 | 5633 | { |
a6bb11b2 | 5634 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 5635 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a06ea964 NC |
5636 | if (is_local) |
5637 | { | |
5638 | /* GD->LE relaxation: | |
5639 | adrp x0, :tlsgd:var => movz x0, :tprel_g1:var | |
5640 | or | |
5641 | adrp x0, :tlsdesc:var => movz x0, :tprel_g1:var | |
5642 | */ | |
5643 | bfd_putl32 (0xd2a00000, contents + rel->r_offset); | |
5644 | return bfd_reloc_continue; | |
5645 | } | |
5646 | else | |
5647 | { | |
5648 | /* GD->IE relaxation: | |
5649 | adrp x0, :tlsgd:var => adrp x0, :gottprel:var | |
5650 | or | |
5651 | adrp x0, :tlsdesc:var => adrp x0, :gottprel:var | |
5652 | */ | |
a06ea964 NC |
5653 | return bfd_reloc_continue; |
5654 | } | |
5655 | ||
389b8029 MS |
5656 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
5657 | BFD_ASSERT (0); | |
5658 | break; | |
5659 | ||
1ada945d MS |
5660 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
5661 | if (is_local) | |
5662 | { | |
5663 | /* Tiny TLSDESC->LE relaxation: | |
5664 | ldr x1, :tlsdesc:var => movz x0, #:tprel_g1:var | |
5665 | adr x0, :tlsdesc:var => movk x0, #:tprel_g0_nc:var | |
5666 | .tlsdesccall var | |
5667 | blr x1 => nop | |
5668 | */ | |
5669 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); | |
5670 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
5671 | ||
5672 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5673 | AARCH64_R (TLSLE_MOVW_TPREL_G0_NC)); | |
5674 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5675 | ||
5676 | bfd_putl32 (0xd2a00000, contents + rel->r_offset); | |
5677 | bfd_putl32 (0xf2800000, contents + rel->r_offset + 4); | |
5678 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); | |
5679 | return bfd_reloc_continue; | |
5680 | } | |
5681 | else | |
5682 | { | |
5683 | /* Tiny TLSDESC->IE relaxation: | |
5684 | ldr x1, :tlsdesc:var => ldr x0, :gottprel:var | |
5685 | adr x0, :tlsdesc:var => nop | |
5686 | .tlsdesccall var | |
5687 | blr x1 => nop | |
5688 | */ | |
5689 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); | |
5690 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
5691 | ||
5692 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5693 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5694 | ||
5695 | bfd_putl32 (0x58000000, contents + rel->r_offset); | |
5696 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4); | |
5697 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); | |
5698 | return bfd_reloc_continue; | |
5699 | } | |
5700 | ||
3c12b054 MS |
5701 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
5702 | if (is_local) | |
5703 | { | |
5704 | /* Tiny GD->LE relaxation: | |
5705 | adr x0, :tlsgd:var => mrs x1, tpidr_el0 | |
5706 | bl __tls_get_addr => add x0, x1, #:tprel_hi12:x, lsl #12 | |
5707 | nop => add x0, x0, #:tprel_lo12_nc:x | |
5708 | */ | |
5709 | ||
5710 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
5711 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
5712 | ||
5713 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0); | |
5714 | bfd_putl32 (0x91400020, contents + rel->r_offset + 4); | |
5715 | bfd_putl32 (0x91000000, contents + rel->r_offset + 8); | |
5716 | ||
5717 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5718 | AARCH64_R (TLSLE_ADD_TPREL_LO12_NC)); | |
5719 | rel[1].r_offset = rel->r_offset + 8; | |
5720 | ||
5721 | /* Move the current relocation to the second instruction in | |
5722 | the sequence. */ | |
5723 | rel->r_offset += 4; | |
5724 | rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5725 | AARCH64_R (TLSLE_ADD_TPREL_HI12)); | |
5726 | return bfd_reloc_continue; | |
5727 | } | |
5728 | else | |
5729 | { | |
5730 | /* Tiny GD->IE relaxation: | |
5731 | adr x0, :tlsgd:var => ldr x0, :gottprel:var | |
5732 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
5733 | nop => add x0, x0, x1 | |
5734 | */ | |
5735 | ||
5736 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
5737 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
5738 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5739 | ||
5740 | bfd_putl32 (0x58000000, contents + rel->r_offset); | |
5741 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); | |
5742 | bfd_putl32 (0x8b000020, contents + rel->r_offset + 8); | |
5743 | return bfd_reloc_continue; | |
5744 | } | |
5745 | ||
ac734732 RL |
5746 | #if ARCH_SIZE == 64 |
5747 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: | |
5748 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSGD_MOVW_G0_NC)); | |
5749 | BFD_ASSERT (rel->r_offset + 12 == rel[2].r_offset); | |
5750 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (CALL26)); | |
5751 | ||
5752 | if (is_local) | |
5753 | { | |
5754 | /* Large GD->LE relaxation: | |
5755 | movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32 | |
5756 | movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16 | |
5757 | add x0, gp, x0 => movk x0, #:tprel_g0_nc:var | |
5758 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
5759 | nop => add x0, x0, x1 | |
5760 | */ | |
5761 | rel[2].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5762 | AARCH64_R (TLSLE_MOVW_TPREL_G0_NC)); | |
5763 | rel[2].r_offset = rel->r_offset + 8; | |
5764 | ||
5765 | bfd_putl32 (0xd2c00000, contents + rel->r_offset + 0); | |
5766 | bfd_putl32 (0xf2a00000, contents + rel->r_offset + 4); | |
5767 | bfd_putl32 (0xf2800000, contents + rel->r_offset + 8); | |
5768 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12); | |
5769 | bfd_putl32 (0x8b000020, contents + rel->r_offset + 16); | |
5770 | } | |
5771 | else | |
5772 | { | |
5773 | /* Large GD->IE relaxation: | |
5774 | movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16 | |
5775 | movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var | |
5776 | add x0, gp, x0 => ldr x0, [gp, x0] | |
5777 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
5778 | nop => add x0, x0, x1 | |
5779 | */ | |
5780 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5781 | bfd_putl32 (0xd2a80000, contents + rel->r_offset + 0); | |
5782 | bfd_putl32 (0x58000000, contents + rel->r_offset + 8); | |
5783 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12); | |
5784 | bfd_putl32 (0x8b000020, contents + rel->r_offset + 16); | |
5785 | } | |
5786 | return bfd_reloc_continue; | |
5787 | ||
5788 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: | |
5789 | return bfd_reloc_continue; | |
5790 | #endif | |
5791 | ||
043bf05a MS |
5792 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
5793 | return bfd_reloc_continue; | |
5794 | ||
a6bb11b2 | 5795 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
a06ea964 NC |
5796 | if (is_local) |
5797 | { | |
5798 | /* GD->LE relaxation: | |
5799 | ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var | |
5800 | */ | |
5801 | bfd_putl32 (0xf2800000, contents + rel->r_offset); | |
5802 | return bfd_reloc_continue; | |
5803 | } | |
5804 | else | |
5805 | { | |
5806 | /* GD->IE relaxation: | |
5807 | ldr xd, [x0, #:tlsdesc_lo12:var] => ldr x0, [x0, #:gottprel_lo12:var] | |
5808 | */ | |
5809 | insn = bfd_getl32 (contents + rel->r_offset); | |
fa85fb9a | 5810 | insn &= 0xffffffe0; |
a06ea964 NC |
5811 | bfd_putl32 (insn, contents + rel->r_offset); |
5812 | return bfd_reloc_continue; | |
5813 | } | |
5814 | ||
a6bb11b2 | 5815 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a06ea964 NC |
5816 | if (is_local) |
5817 | { | |
5818 | /* GD->LE relaxation | |
5819 | add x0, #:tlsgd_lo12:var => movk x0, :tprel_g0_nc:var | |
5820 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
5821 | nop => add x0, x1, x0 | |
5822 | */ | |
5823 | ||
5824 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
5825 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
cec5225b | 5826 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 NC |
5827 | |
5828 | bfd_putl32 (0xf2800000, contents + rel->r_offset); | |
5829 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); | |
5830 | bfd_putl32 (0x8b000020, contents + rel->r_offset + 8); | |
5831 | return bfd_reloc_continue; | |
5832 | } | |
5833 | else | |
5834 | { | |
5835 | /* GD->IE relaxation | |
5836 | ADD x0, #:tlsgd_lo12:var => ldr x0, [x0, #:gottprel_lo12:var] | |
5837 | BL __tls_get_addr => mrs x1, tpidr_el0 | |
5838 | R_AARCH64_CALL26 | |
5839 | NOP => add x0, x1, x0 | |
5840 | */ | |
5841 | ||
a6bb11b2 | 5842 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); |
a06ea964 NC |
5843 | |
5844 | /* Remove the relocation on the BL instruction. */ | |
cec5225b | 5845 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 NC |
5846 | |
5847 | bfd_putl32 (0xf9400000, contents + rel->r_offset); | |
5848 | ||
5849 | /* We choose to fixup the BL and NOP instructions using the | |
5850 | offset from the second relocation to allow flexibility in | |
5851 | scheduling instructions between the ADD and BL. */ | |
5852 | bfd_putl32 (0xd53bd041, contents + rel[1].r_offset); | |
5853 | bfd_putl32 (0x8b000020, contents + rel[1].r_offset + 4); | |
5854 | return bfd_reloc_continue; | |
5855 | } | |
5856 | ||
0484b454 | 5857 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
a6bb11b2 YZ |
5858 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
5859 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
a06ea964 NC |
5860 | /* GD->IE/LE relaxation: |
5861 | add x0, x0, #:tlsdesc_lo12:var => nop | |
5862 | blr xd => nop | |
5863 | */ | |
5864 | bfd_putl32 (INSN_NOP, contents + rel->r_offset); | |
5865 | return bfd_reloc_ok; | |
5866 | ||
0484b454 RL |
5867 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
5868 | if (is_local) | |
5869 | { | |
5870 | /* GD->LE relaxation: | |
5871 | ldr xd, [gp, xn] => movk x0, #:tprel_g0_nc:var | |
5872 | */ | |
5873 | bfd_putl32 (0xf2800000, contents + rel->r_offset); | |
5874 | return bfd_reloc_continue; | |
5875 | } | |
5876 | else | |
5877 | { | |
5878 | /* GD->IE relaxation: | |
5879 | ldr xd, [gp, xn] => ldr x0, [gp, xn] | |
5880 | */ | |
5881 | insn = bfd_getl32 (contents + rel->r_offset); | |
5882 | insn &= 0xffffffe0; | |
5883 | bfd_putl32 (insn, contents + rel->r_offset); | |
5884 | return bfd_reloc_ok; | |
5885 | } | |
5886 | ||
5887 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
5888 | /* GD->LE relaxation: | |
5889 | movk xd, #:tlsdesc_off_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16 | |
5890 | GD->IE relaxation: | |
5891 | movk xd, #:tlsdesc_off_g0_nc:var => movk xd, #:gottprel_g0_nc:var | |
5892 | */ | |
5893 | if (is_local) | |
5894 | bfd_putl32 (0xf2a00000, contents + rel->r_offset); | |
5895 | return bfd_reloc_continue; | |
5896 | ||
5897 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
5898 | if (is_local) | |
5899 | { | |
5900 | /* GD->LE relaxation: | |
5901 | movz xd, #:tlsdesc_off_g1:var => movz x0, #:tprel_g2:var, lsl #32 | |
5902 | */ | |
5903 | bfd_putl32 (0xd2c00000, contents + rel->r_offset); | |
5904 | return bfd_reloc_continue; | |
5905 | } | |
5906 | else | |
5907 | { | |
5908 | /* GD->IE relaxation: | |
5909 | movz xd, #:tlsdesc_off_g1:var => movz xd, #:gottprel_g1:var, lsl #16 | |
5910 | */ | |
5911 | insn = bfd_getl32 (contents + rel->r_offset); | |
5912 | bfd_putl32 (0xd2a00000 | (insn & 0x1f), contents + rel->r_offset); | |
5913 | return bfd_reloc_continue; | |
5914 | } | |
5915 | ||
a6bb11b2 | 5916 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a06ea964 NC |
5917 | /* IE->LE relaxation: |
5918 | adrp xd, :gottprel:var => movz xd, :tprel_g1:var | |
5919 | */ | |
5920 | if (is_local) | |
5921 | { | |
5922 | insn = bfd_getl32 (contents + rel->r_offset); | |
5923 | bfd_putl32 (0xd2a00000 | (insn & 0x1f), contents + rel->r_offset); | |
5924 | } | |
5925 | return bfd_reloc_continue; | |
5926 | ||
a6bb11b2 | 5927 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: |
a06ea964 NC |
5928 | /* IE->LE relaxation: |
5929 | ldr xd, [xm, #:gottprel_lo12:var] => movk xd, :tprel_g0_nc:var | |
5930 | */ | |
5931 | if (is_local) | |
5932 | { | |
5933 | insn = bfd_getl32 (contents + rel->r_offset); | |
5934 | bfd_putl32 (0xf2800000 | (insn & 0x1f), contents + rel->r_offset); | |
5935 | } | |
5936 | return bfd_reloc_continue; | |
5937 | ||
259364ad JW |
5938 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
5939 | /* LD->LE relaxation (tiny): | |
5940 | adr x0, :tlsldm:x => mrs x0, tpidr_el0 | |
5941 | bl __tls_get_addr => add x0, x0, TCB_SIZE | |
5942 | */ | |
5943 | if (is_local) | |
5944 | { | |
5945 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
5946 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); | |
5947 | /* No need of CALL26 relocation for tls_get_addr. */ | |
5948 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5949 | bfd_putl32 (0xd53bd040, contents + rel->r_offset + 0); | |
5950 | bfd_putl32 (0x91004000, contents + rel->r_offset + 4); | |
5951 | return bfd_reloc_ok; | |
5952 | } | |
5953 | return bfd_reloc_continue; | |
5954 | ||
5955 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: | |
5956 | /* LD->LE relaxation (small): | |
5957 | adrp x0, :tlsldm:x => mrs x0, tpidr_el0 | |
5958 | */ | |
5959 | if (is_local) | |
5960 | { | |
5961 | bfd_putl32 (0xd53bd040, contents + rel->r_offset); | |
5962 | return bfd_reloc_ok; | |
5963 | } | |
5964 | return bfd_reloc_continue; | |
5965 | ||
5966 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: | |
5967 | /* LD->LE relaxation (small): | |
5968 | add x0, #:tlsldm_lo12:x => add x0, x0, TCB_SIZE | |
5969 | bl __tls_get_addr => nop | |
5970 | */ | |
5971 | if (is_local) | |
5972 | { | |
5973 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
5974 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); | |
5975 | /* No need of CALL26 relocation for tls_get_addr. */ | |
5976 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5977 | bfd_putl32 (0x91004000, contents + rel->r_offset + 0); | |
5978 | bfd_putl32 (0xd503201f, contents + rel->r_offset + 4); | |
5979 | return bfd_reloc_ok; | |
5980 | } | |
5981 | return bfd_reloc_continue; | |
5982 | ||
a06ea964 NC |
5983 | default: |
5984 | return bfd_reloc_continue; | |
5985 | } | |
5986 | ||
5987 | return bfd_reloc_ok; | |
5988 | } | |
5989 | ||
5990 | /* Relocate an AArch64 ELF section. */ | |
5991 | ||
5992 | static bfd_boolean | |
cec5225b | 5993 | elfNN_aarch64_relocate_section (bfd *output_bfd, |
a06ea964 NC |
5994 | struct bfd_link_info *info, |
5995 | bfd *input_bfd, | |
5996 | asection *input_section, | |
5997 | bfd_byte *contents, | |
5998 | Elf_Internal_Rela *relocs, | |
5999 | Elf_Internal_Sym *local_syms, | |
6000 | asection **local_sections) | |
6001 | { | |
6002 | Elf_Internal_Shdr *symtab_hdr; | |
6003 | struct elf_link_hash_entry **sym_hashes; | |
6004 | Elf_Internal_Rela *rel; | |
6005 | Elf_Internal_Rela *relend; | |
6006 | const char *name; | |
cec5225b | 6007 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 NC |
6008 | bfd_boolean save_addend = FALSE; |
6009 | bfd_vma addend = 0; | |
6010 | ||
cec5225b | 6011 | globals = elf_aarch64_hash_table (info); |
a06ea964 NC |
6012 | |
6013 | symtab_hdr = &elf_symtab_hdr (input_bfd); | |
6014 | sym_hashes = elf_sym_hashes (input_bfd); | |
6015 | ||
6016 | rel = relocs; | |
6017 | relend = relocs + input_section->reloc_count; | |
6018 | for (; rel < relend; rel++) | |
6019 | { | |
6020 | unsigned int r_type; | |
a6bb11b2 YZ |
6021 | bfd_reloc_code_real_type bfd_r_type; |
6022 | bfd_reloc_code_real_type relaxed_bfd_r_type; | |
a06ea964 NC |
6023 | reloc_howto_type *howto; |
6024 | unsigned long r_symndx; | |
6025 | Elf_Internal_Sym *sym; | |
6026 | asection *sec; | |
6027 | struct elf_link_hash_entry *h; | |
6028 | bfd_vma relocation; | |
6029 | bfd_reloc_status_type r; | |
6030 | arelent bfd_reloc; | |
6031 | char sym_type; | |
6032 | bfd_boolean unresolved_reloc = FALSE; | |
6033 | char *error_message = NULL; | |
6034 | ||
cec5225b YZ |
6035 | r_symndx = ELFNN_R_SYM (rel->r_info); |
6036 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 | 6037 | |
cec5225b | 6038 | bfd_reloc.howto = elfNN_aarch64_howto_from_type (r_type); |
a06ea964 NC |
6039 | howto = bfd_reloc.howto; |
6040 | ||
7fcfd62d NC |
6041 | if (howto == NULL) |
6042 | { | |
6043 | (*_bfd_error_handler) | |
6044 | (_("%B: unrecognized relocation (0x%x) in section `%A'"), | |
6045 | input_bfd, input_section, r_type); | |
6046 | return FALSE; | |
6047 | } | |
a6bb11b2 | 6048 | bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto); |
7fcfd62d | 6049 | |
a06ea964 NC |
6050 | h = NULL; |
6051 | sym = NULL; | |
6052 | sec = NULL; | |
6053 | ||
6054 | if (r_symndx < symtab_hdr->sh_info) | |
6055 | { | |
6056 | sym = local_syms + r_symndx; | |
cec5225b | 6057 | sym_type = ELFNN_ST_TYPE (sym->st_info); |
a06ea964 NC |
6058 | sec = local_sections[r_symndx]; |
6059 | ||
6060 | /* An object file might have a reference to a local | |
6061 | undefined symbol. This is a daft object file, but we | |
6062 | should at least do something about it. */ | |
6063 | if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL | |
6064 | && bfd_is_und_section (sec) | |
6065 | && ELF_ST_BIND (sym->st_info) != STB_WEAK) | |
6066 | { | |
6067 | if (!info->callbacks->undefined_symbol | |
6068 | (info, bfd_elf_string_from_elf_section | |
6069 | (input_bfd, symtab_hdr->sh_link, sym->st_name), | |
6070 | input_bfd, input_section, rel->r_offset, TRUE)) | |
6071 | return FALSE; | |
6072 | } | |
6073 | ||
a06ea964 | 6074 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
1419bbe5 WN |
6075 | |
6076 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
0e1862bb | 6077 | if (!bfd_link_relocatable (info) |
1419bbe5 WN |
6078 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
6079 | { | |
6080 | h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd, | |
6081 | rel, FALSE); | |
6082 | if (h == NULL) | |
6083 | abort (); | |
6084 | ||
6085 | /* Set STT_GNU_IFUNC symbol value. */ | |
6086 | h->root.u.def.value = sym->st_value; | |
6087 | h->root.u.def.section = sec; | |
6088 | } | |
a06ea964 NC |
6089 | } |
6090 | else | |
6091 | { | |
62d887d4 | 6092 | bfd_boolean warned, ignored; |
a06ea964 NC |
6093 | |
6094 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
6095 | r_symndx, symtab_hdr, sym_hashes, | |
6096 | h, sec, relocation, | |
62d887d4 | 6097 | unresolved_reloc, warned, ignored); |
a06ea964 NC |
6098 | |
6099 | sym_type = h->type; | |
6100 | } | |
6101 | ||
6102 | if (sec != NULL && discarded_section (sec)) | |
6103 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
6104 | rel, 1, relend, howto, 0, contents); | |
6105 | ||
0e1862bb | 6106 | if (bfd_link_relocatable (info)) |
2e0488d3 | 6107 | continue; |
a06ea964 NC |
6108 | |
6109 | if (h != NULL) | |
6110 | name = h->root.root.string; | |
6111 | else | |
6112 | { | |
6113 | name = (bfd_elf_string_from_elf_section | |
6114 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
6115 | if (name == NULL || *name == '\0') | |
6116 | name = bfd_section_name (input_bfd, sec); | |
6117 | } | |
6118 | ||
6119 | if (r_symndx != 0 | |
6120 | && r_type != R_AARCH64_NONE | |
6121 | && r_type != R_AARCH64_NULL | |
6122 | && (h == NULL | |
6123 | || h->root.type == bfd_link_hash_defined | |
6124 | || h->root.type == bfd_link_hash_defweak) | |
a6bb11b2 | 6125 | && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS)) |
a06ea964 NC |
6126 | { |
6127 | (*_bfd_error_handler) | |
6128 | ((sym_type == STT_TLS | |
6129 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") | |
6130 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")), | |
6131 | input_bfd, | |
6132 | input_section, (long) rel->r_offset, howto->name, name); | |
6133 | } | |
6134 | ||
a06ea964 NC |
6135 | /* We relax only if we can see that there can be a valid transition |
6136 | from a reloc type to another. | |
cec5225b | 6137 | We call elfNN_aarch64_final_link_relocate unless we're completely |
a06ea964 NC |
6138 | done, i.e., the relaxation produced the final output we want. */ |
6139 | ||
a6bb11b2 YZ |
6140 | relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, |
6141 | h, r_symndx); | |
6142 | if (relaxed_bfd_r_type != bfd_r_type) | |
a06ea964 | 6143 | { |
a6bb11b2 YZ |
6144 | bfd_r_type = relaxed_bfd_r_type; |
6145 | howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type); | |
6146 | BFD_ASSERT (howto != NULL); | |
6147 | r_type = howto->type; | |
06d2788c | 6148 | r = elfNN_aarch64_tls_relax (globals, input_bfd, contents, rel, h); |
a06ea964 NC |
6149 | unresolved_reloc = 0; |
6150 | } | |
6151 | else | |
6152 | r = bfd_reloc_continue; | |
6153 | ||
6154 | /* There may be multiple consecutive relocations for the | |
6155 | same offset. In that case we are supposed to treat the | |
6156 | output of each relocation as the addend for the next. */ | |
6157 | if (rel + 1 < relend | |
6158 | && rel->r_offset == rel[1].r_offset | |
cec5225b YZ |
6159 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE |
6160 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL) | |
a06ea964 NC |
6161 | save_addend = TRUE; |
6162 | else | |
6163 | save_addend = FALSE; | |
6164 | ||
6165 | if (r == bfd_reloc_continue) | |
cec5225b | 6166 | r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd, |
a06ea964 NC |
6167 | input_section, contents, rel, |
6168 | relocation, info, sec, | |
6169 | h, &unresolved_reloc, | |
1419bbe5 | 6170 | save_addend, &addend, sym); |
a06ea964 | 6171 | |
a6bb11b2 | 6172 | switch (elfNN_aarch64_bfd_reloc_from_type (r_type)) |
a06ea964 | 6173 | { |
ce336788 | 6174 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 6175 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 6176 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 6177 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 6178 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
73f925cc | 6179 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 6180 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 6181 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
6182 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
6183 | { | |
6184 | bfd_boolean need_relocs = FALSE; | |
6185 | bfd_byte *loc; | |
6186 | int indx; | |
6187 | bfd_vma off; | |
6188 | ||
6189 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
6190 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
6191 | ||
6192 | need_relocs = | |
0e1862bb | 6193 | (bfd_link_pic (info) || indx != 0) && |
a06ea964 NC |
6194 | (h == NULL |
6195 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6196 | || h->root.type != bfd_link_hash_undefweak); | |
6197 | ||
6198 | BFD_ASSERT (globals->root.srelgot != NULL); | |
6199 | ||
6200 | if (need_relocs) | |
6201 | { | |
6202 | Elf_Internal_Rela rela; | |
a6bb11b2 | 6203 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD)); |
a06ea964 NC |
6204 | rela.r_addend = 0; |
6205 | rela.r_offset = globals->root.sgot->output_section->vma + | |
6206 | globals->root.sgot->output_offset + off; | |
6207 | ||
6208 | ||
6209 | loc = globals->root.srelgot->contents; | |
6210 | loc += globals->root.srelgot->reloc_count++ | |
6211 | * RELOC_SIZE (htab); | |
cec5225b | 6212 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 6213 | |
f69e4920 JW |
6214 | bfd_reloc_code_real_type real_type = |
6215 | elfNN_aarch64_bfd_reloc_from_type (r_type); | |
6216 | ||
6217 | if (real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 | |
73f925cc JW |
6218 | || real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 |
6219 | || real_type == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC) | |
77a69ff8 JW |
6220 | { |
6221 | /* For local dynamic, don't generate DTPREL in any case. | |
6222 | Initialize the DTPREL slot into zero, so we get module | |
6223 | base address when invoke runtime TLS resolver. */ | |
6224 | bfd_put_NN (output_bfd, 0, | |
6225 | globals->root.sgot->contents + off | |
6226 | + GOT_ENTRY_SIZE); | |
6227 | } | |
6228 | else if (indx == 0) | |
a06ea964 | 6229 | { |
cec5225b | 6230 | bfd_put_NN (output_bfd, |
a06ea964 NC |
6231 | relocation - dtpoff_base (info), |
6232 | globals->root.sgot->contents + off | |
6233 | + GOT_ENTRY_SIZE); | |
6234 | } | |
6235 | else | |
6236 | { | |
6237 | /* This TLS symbol is global. We emit a | |
6238 | relocation to fixup the tls offset at load | |
6239 | time. */ | |
6240 | rela.r_info = | |
a6bb11b2 | 6241 | ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL)); |
a06ea964 NC |
6242 | rela.r_addend = 0; |
6243 | rela.r_offset = | |
6244 | (globals->root.sgot->output_section->vma | |
6245 | + globals->root.sgot->output_offset + off | |
6246 | + GOT_ENTRY_SIZE); | |
6247 | ||
6248 | loc = globals->root.srelgot->contents; | |
6249 | loc += globals->root.srelgot->reloc_count++ | |
6250 | * RELOC_SIZE (globals); | |
cec5225b YZ |
6251 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
6252 | bfd_put_NN (output_bfd, (bfd_vma) 0, | |
a06ea964 NC |
6253 | globals->root.sgot->contents + off |
6254 | + GOT_ENTRY_SIZE); | |
6255 | } | |
6256 | } | |
6257 | else | |
6258 | { | |
cec5225b | 6259 | bfd_put_NN (output_bfd, (bfd_vma) 1, |
a06ea964 | 6260 | globals->root.sgot->contents + off); |
cec5225b | 6261 | bfd_put_NN (output_bfd, |
a06ea964 NC |
6262 | relocation - dtpoff_base (info), |
6263 | globals->root.sgot->contents + off | |
6264 | + GOT_ENTRY_SIZE); | |
6265 | } | |
6266 | ||
6267 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
6268 | } | |
6269 | break; | |
6270 | ||
a6bb11b2 YZ |
6271 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
6272 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
043bf05a | 6273 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
6274 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
6275 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
a06ea964 NC |
6276 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
6277 | { | |
6278 | bfd_boolean need_relocs = FALSE; | |
6279 | bfd_byte *loc; | |
6280 | int indx; | |
6281 | bfd_vma off; | |
6282 | ||
6283 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
6284 | ||
6285 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
6286 | ||
6287 | need_relocs = | |
0e1862bb | 6288 | (bfd_link_pic (info) || indx != 0) && |
a06ea964 NC |
6289 | (h == NULL |
6290 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6291 | || h->root.type != bfd_link_hash_undefweak); | |
6292 | ||
6293 | BFD_ASSERT (globals->root.srelgot != NULL); | |
6294 | ||
6295 | if (need_relocs) | |
6296 | { | |
6297 | Elf_Internal_Rela rela; | |
6298 | ||
6299 | if (indx == 0) | |
6300 | rela.r_addend = relocation - dtpoff_base (info); | |
6301 | else | |
6302 | rela.r_addend = 0; | |
6303 | ||
a6bb11b2 | 6304 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL)); |
a06ea964 NC |
6305 | rela.r_offset = globals->root.sgot->output_section->vma + |
6306 | globals->root.sgot->output_offset + off; | |
6307 | ||
6308 | loc = globals->root.srelgot->contents; | |
6309 | loc += globals->root.srelgot->reloc_count++ | |
6310 | * RELOC_SIZE (htab); | |
6311 | ||
cec5225b | 6312 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 6313 | |
cec5225b | 6314 | bfd_put_NN (output_bfd, rela.r_addend, |
a06ea964 NC |
6315 | globals->root.sgot->contents + off); |
6316 | } | |
6317 | else | |
cec5225b | 6318 | bfd_put_NN (output_bfd, relocation - tpoff_base (info), |
a06ea964 NC |
6319 | globals->root.sgot->contents + off); |
6320 | ||
6321 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
6322 | } | |
6323 | break; | |
6324 | ||
7bcccb57 | 6325 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
a6bb11b2 | 6326 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 6327 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 6328 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
1ada945d | 6329 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
6330 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
6331 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a06ea964 NC |
6332 | if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx)) |
6333 | { | |
6334 | bfd_boolean need_relocs = FALSE; | |
6335 | int indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
6336 | bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx); | |
6337 | ||
6338 | need_relocs = (h == NULL | |
6339 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6340 | || h->root.type != bfd_link_hash_undefweak); | |
6341 | ||
6342 | BFD_ASSERT (globals->root.srelgot != NULL); | |
6343 | BFD_ASSERT (globals->root.sgot != NULL); | |
6344 | ||
6345 | if (need_relocs) | |
6346 | { | |
6347 | bfd_byte *loc; | |
6348 | Elf_Internal_Rela rela; | |
a6bb11b2 YZ |
6349 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC)); |
6350 | ||
a06ea964 NC |
6351 | rela.r_addend = 0; |
6352 | rela.r_offset = (globals->root.sgotplt->output_section->vma | |
6353 | + globals->root.sgotplt->output_offset | |
6354 | + off + globals->sgotplt_jump_table_size); | |
6355 | ||
6356 | if (indx == 0) | |
6357 | rela.r_addend = relocation - dtpoff_base (info); | |
6358 | ||
6359 | /* Allocate the next available slot in the PLT reloc | |
6360 | section to hold our R_AARCH64_TLSDESC, the next | |
6361 | available slot is determined from reloc_count, | |
6362 | which we step. But note, reloc_count was | |
6363 | artifically moved down while allocating slots for | |
6364 | real PLT relocs such that all of the PLT relocs | |
6365 | will fit above the initial reloc_count and the | |
6366 | extra stuff will fit below. */ | |
6367 | loc = globals->root.srelplt->contents; | |
6368 | loc += globals->root.srelplt->reloc_count++ | |
6369 | * RELOC_SIZE (globals); | |
6370 | ||
cec5225b | 6371 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 6372 | |
cec5225b | 6373 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
6374 | globals->root.sgotplt->contents + off + |
6375 | globals->sgotplt_jump_table_size); | |
cec5225b | 6376 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
6377 | globals->root.sgotplt->contents + off + |
6378 | globals->sgotplt_jump_table_size + | |
6379 | GOT_ENTRY_SIZE); | |
6380 | } | |
6381 | ||
6382 | symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx); | |
6383 | } | |
6384 | break; | |
a6bb11b2 YZ |
6385 | default: |
6386 | break; | |
a06ea964 NC |
6387 | } |
6388 | ||
a06ea964 NC |
6389 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
6390 | because such sections are not SEC_ALLOC and thus ld.so will | |
6391 | not process them. */ | |
6392 | if (unresolved_reloc | |
6393 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
6394 | && h->def_dynamic) | |
6395 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
6396 | +rel->r_offset) != (bfd_vma) - 1) | |
6397 | { | |
6398 | (*_bfd_error_handler) | |
6399 | (_ | |
6400 | ("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), | |
6401 | input_bfd, input_section, (long) rel->r_offset, howto->name, | |
6402 | h->root.root.string); | |
6403 | return FALSE; | |
6404 | } | |
6405 | ||
6406 | if (r != bfd_reloc_ok && r != bfd_reloc_continue) | |
6407 | { | |
c674f5cd JW |
6408 | bfd_reloc_code_real_type real_r_type |
6409 | = elfNN_aarch64_bfd_reloc_from_type (r_type); | |
6410 | ||
a06ea964 NC |
6411 | switch (r) |
6412 | { | |
6413 | case bfd_reloc_overflow: | |
fdc3b1b1 JW |
6414 | if (!(*info->callbacks->reloc_overflow) |
6415 | (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, | |
6416 | input_bfd, input_section, rel->r_offset)) | |
a06ea964 | 6417 | return FALSE; |
c674f5cd JW |
6418 | if (real_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
6419 | || real_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
6420 | { | |
6421 | (*info->callbacks->warning) | |
6422 | (info, | |
6423 | _("Too many GOT entries for -fpic, " | |
6424 | "please recompile with -fPIC"), | |
6425 | name, input_bfd, input_section, rel->r_offset); | |
6426 | return FALSE; | |
6427 | } | |
027e9c75 NC |
6428 | /* Overflow can occur when a variable is referenced with a type |
6429 | that has a larger alignment than the type with which it was | |
6430 | declared. eg: | |
6431 | file1.c: extern int foo; int a (void) { return foo; } | |
6432 | file2.c: char bar, foo, baz; | |
6433 | If the variable is placed into a data section at an offset | |
6434 | that is incompatible with the larger alignment requirement | |
6435 | overflow will occur. (Strictly speaking this is not overflow | |
6436 | but rather an alignment problem, but the bfd_reloc_ error | |
6437 | enum does not have a value to cover that situation). | |
6438 | ||
6439 | Try to catch this situation here and provide a more helpful | |
6440 | error message to the user. */ | |
6441 | if (addend & ((1 << howto->rightshift) - 1) | |
6442 | /* FIXME: Are we testing all of the appropriate reloc | |
6443 | types here ? */ | |
6444 | && (real_r_type == BFD_RELOC_AARCH64_LD_LO19_PCREL | |
6445 | || real_r_type == BFD_RELOC_AARCH64_LDST16_LO12 | |
6446 | || real_r_type == BFD_RELOC_AARCH64_LDST32_LO12 | |
6447 | || real_r_type == BFD_RELOC_AARCH64_LDST64_LO12 | |
6448 | || real_r_type == BFD_RELOC_AARCH64_LDST128_LO12)) | |
6449 | { | |
6450 | info->callbacks->warning | |
6451 | (info, _("One possible cause of this error is that the \ | |
6452 | symbol is being referenced in the indicated code as if it had a larger \ | |
6453 | alignment than was declared where it was defined."), | |
6454 | name, input_bfd, input_section, rel->r_offset); | |
6455 | } | |
a06ea964 NC |
6456 | break; |
6457 | ||
6458 | case bfd_reloc_undefined: | |
6459 | if (!((*info->callbacks->undefined_symbol) | |
6460 | (info, name, input_bfd, input_section, | |
6461 | rel->r_offset, TRUE))) | |
6462 | return FALSE; | |
6463 | break; | |
6464 | ||
6465 | case bfd_reloc_outofrange: | |
6466 | error_message = _("out of range"); | |
6467 | goto common_error; | |
6468 | ||
6469 | case bfd_reloc_notsupported: | |
6470 | error_message = _("unsupported relocation"); | |
6471 | goto common_error; | |
6472 | ||
6473 | case bfd_reloc_dangerous: | |
6474 | /* error_message should already be set. */ | |
6475 | goto common_error; | |
6476 | ||
6477 | default: | |
6478 | error_message = _("unknown error"); | |
6479 | /* Fall through. */ | |
6480 | ||
6481 | common_error: | |
6482 | BFD_ASSERT (error_message != NULL); | |
6483 | if (!((*info->callbacks->reloc_dangerous) | |
6484 | (info, error_message, input_bfd, input_section, | |
6485 | rel->r_offset))) | |
6486 | return FALSE; | |
6487 | break; | |
6488 | } | |
6489 | } | |
027e9c75 NC |
6490 | |
6491 | if (!save_addend) | |
6492 | addend = 0; | |
a06ea964 NC |
6493 | } |
6494 | ||
6495 | return TRUE; | |
6496 | } | |
6497 | ||
6498 | /* Set the right machine number. */ | |
6499 | ||
6500 | static bfd_boolean | |
cec5225b | 6501 | elfNN_aarch64_object_p (bfd *abfd) |
a06ea964 | 6502 | { |
cec5225b YZ |
6503 | #if ARCH_SIZE == 32 |
6504 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32); | |
6505 | #else | |
a06ea964 | 6506 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64); |
cec5225b | 6507 | #endif |
a06ea964 NC |
6508 | return TRUE; |
6509 | } | |
6510 | ||
6511 | /* Function to keep AArch64 specific flags in the ELF header. */ | |
6512 | ||
6513 | static bfd_boolean | |
cec5225b | 6514 | elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags) |
a06ea964 NC |
6515 | { |
6516 | if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags) | |
6517 | { | |
6518 | } | |
6519 | else | |
6520 | { | |
6521 | elf_elfheader (abfd)->e_flags = flags; | |
6522 | elf_flags_init (abfd) = TRUE; | |
6523 | } | |
6524 | ||
6525 | return TRUE; | |
6526 | } | |
6527 | ||
a06ea964 NC |
6528 | /* Merge backend specific data from an object file to the output |
6529 | object file when linking. */ | |
6530 | ||
6531 | static bfd_boolean | |
cec5225b | 6532 | elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
a06ea964 NC |
6533 | { |
6534 | flagword out_flags; | |
6535 | flagword in_flags; | |
6536 | bfd_boolean flags_compatible = TRUE; | |
6537 | asection *sec; | |
6538 | ||
6539 | /* Check if we have the same endianess. */ | |
6540 | if (!_bfd_generic_verify_endian_match (ibfd, obfd)) | |
6541 | return FALSE; | |
6542 | ||
6543 | if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd)) | |
6544 | return TRUE; | |
6545 | ||
6546 | /* The input BFD must have had its flags initialised. */ | |
6547 | /* The following seems bogus to me -- The flags are initialized in | |
6548 | the assembler but I don't think an elf_flags_init field is | |
6549 | written into the object. */ | |
6550 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ | |
6551 | ||
6552 | in_flags = elf_elfheader (ibfd)->e_flags; | |
6553 | out_flags = elf_elfheader (obfd)->e_flags; | |
6554 | ||
6555 | if (!elf_flags_init (obfd)) | |
6556 | { | |
6557 | /* If the input is the default architecture and had the default | |
6558 | flags then do not bother setting the flags for the output | |
6559 | architecture, instead allow future merges to do this. If no | |
6560 | future merges ever set these flags then they will retain their | |
6561 | uninitialised values, which surprise surprise, correspond | |
6562 | to the default values. */ | |
6563 | if (bfd_get_arch_info (ibfd)->the_default | |
6564 | && elf_elfheader (ibfd)->e_flags == 0) | |
6565 | return TRUE; | |
6566 | ||
6567 | elf_flags_init (obfd) = TRUE; | |
6568 | elf_elfheader (obfd)->e_flags = in_flags; | |
6569 | ||
6570 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
6571 | && bfd_get_arch_info (obfd)->the_default) | |
6572 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
6573 | bfd_get_mach (ibfd)); | |
6574 | ||
6575 | return TRUE; | |
6576 | } | |
6577 | ||
6578 | /* Identical flags must be compatible. */ | |
6579 | if (in_flags == out_flags) | |
6580 | return TRUE; | |
6581 | ||
6582 | /* Check to see if the input BFD actually contains any sections. If | |
6583 | not, its flags may not have been initialised either, but it | |
6584 | cannot actually cause any incompatiblity. Do not short-circuit | |
6585 | dynamic objects; their section list may be emptied by | |
6586 | elf_link_add_object_symbols. | |
6587 | ||
6588 | Also check to see if there are no code sections in the input. | |
6589 | In this case there is no need to check for code specific flags. | |
6590 | XXX - do we need to worry about floating-point format compatability | |
6591 | in data sections ? */ | |
6592 | if (!(ibfd->flags & DYNAMIC)) | |
6593 | { | |
6594 | bfd_boolean null_input_bfd = TRUE; | |
6595 | bfd_boolean only_data_sections = TRUE; | |
6596 | ||
6597 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
6598 | { | |
6599 | if ((bfd_get_section_flags (ibfd, sec) | |
6600 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
6601 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
6602 | only_data_sections = FALSE; | |
6603 | ||
6604 | null_input_bfd = FALSE; | |
6605 | break; | |
6606 | } | |
6607 | ||
6608 | if (null_input_bfd || only_data_sections) | |
6609 | return TRUE; | |
6610 | } | |
6611 | ||
6612 | return flags_compatible; | |
6613 | } | |
6614 | ||
6615 | /* Display the flags field. */ | |
6616 | ||
6617 | static bfd_boolean | |
cec5225b | 6618 | elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr) |
a06ea964 NC |
6619 | { |
6620 | FILE *file = (FILE *) ptr; | |
6621 | unsigned long flags; | |
6622 | ||
6623 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
6624 | ||
6625 | /* Print normal ELF private data. */ | |
6626 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
6627 | ||
6628 | flags = elf_elfheader (abfd)->e_flags; | |
6629 | /* Ignore init flag - it may not be set, despite the flags field | |
6630 | containing valid data. */ | |
6631 | ||
6632 | /* xgettext:c-format */ | |
6633 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
6634 | ||
6635 | if (flags) | |
6636 | fprintf (file, _("<Unrecognised flag bits set>")); | |
6637 | ||
6638 | fputc ('\n', file); | |
6639 | ||
6640 | return TRUE; | |
6641 | } | |
6642 | ||
6643 | /* Update the got entry reference counts for the section being removed. */ | |
6644 | ||
6645 | static bfd_boolean | |
cec5225b | 6646 | elfNN_aarch64_gc_sweep_hook (bfd *abfd, |
cb8af559 NC |
6647 | struct bfd_link_info *info, |
6648 | asection *sec, | |
6649 | const Elf_Internal_Rela * relocs) | |
a06ea964 | 6650 | { |
cec5225b | 6651 | struct elf_aarch64_link_hash_table *htab; |
59c108f7 NC |
6652 | Elf_Internal_Shdr *symtab_hdr; |
6653 | struct elf_link_hash_entry **sym_hashes; | |
cb8af559 | 6654 | struct elf_aarch64_local_symbol *locals; |
59c108f7 NC |
6655 | const Elf_Internal_Rela *rel, *relend; |
6656 | ||
0e1862bb | 6657 | if (bfd_link_relocatable (info)) |
59c108f7 NC |
6658 | return TRUE; |
6659 | ||
cec5225b | 6660 | htab = elf_aarch64_hash_table (info); |
59c108f7 NC |
6661 | |
6662 | if (htab == NULL) | |
6663 | return FALSE; | |
6664 | ||
6665 | elf_section_data (sec)->local_dynrel = NULL; | |
6666 | ||
6667 | symtab_hdr = &elf_symtab_hdr (abfd); | |
6668 | sym_hashes = elf_sym_hashes (abfd); | |
6669 | ||
cec5225b | 6670 | locals = elf_aarch64_locals (abfd); |
59c108f7 NC |
6671 | |
6672 | relend = relocs + sec->reloc_count; | |
6673 | for (rel = relocs; rel < relend; rel++) | |
6674 | { | |
6675 | unsigned long r_symndx; | |
6676 | unsigned int r_type; | |
6677 | struct elf_link_hash_entry *h = NULL; | |
6678 | ||
cec5225b | 6679 | r_symndx = ELFNN_R_SYM (rel->r_info); |
8847944f | 6680 | |
59c108f7 NC |
6681 | if (r_symndx >= symtab_hdr->sh_info) |
6682 | { | |
8847944f | 6683 | |
59c108f7 NC |
6684 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
6685 | while (h->root.type == bfd_link_hash_indirect | |
6686 | || h->root.type == bfd_link_hash_warning) | |
6687 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
59c108f7 NC |
6688 | } |
6689 | else | |
6690 | { | |
6691 | Elf_Internal_Sym *isym; | |
6692 | ||
8847944f | 6693 | /* A local symbol. */ |
59c108f7 NC |
6694 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
6695 | abfd, r_symndx); | |
1419bbe5 WN |
6696 | |
6697 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
6698 | if (isym != NULL | |
6699 | && ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
6700 | { | |
6701 | h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, FALSE); | |
6702 | if (h == NULL) | |
6703 | abort (); | |
6704 | } | |
6705 | } | |
6706 | ||
6707 | if (h) | |
6708 | { | |
6709 | struct elf_aarch64_link_hash_entry *eh; | |
6710 | struct elf_dyn_relocs **pp; | |
6711 | struct elf_dyn_relocs *p; | |
6712 | ||
6713 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
6714 | ||
6715 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
6716 | if (p->sec == sec) | |
6717 | { | |
6718 | /* Everything must go for SEC. */ | |
6719 | *pp = p->next; | |
6720 | break; | |
6721 | } | |
59c108f7 NC |
6722 | } |
6723 | ||
cec5225b | 6724 | r_type = ELFNN_R_TYPE (rel->r_info); |
a6bb11b2 | 6725 | switch (aarch64_tls_transition (abfd,info, r_type, h ,r_symndx)) |
59c108f7 | 6726 | { |
a6bb11b2 | 6727 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
7bcccb57 | 6728 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
7018c030 | 6729 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
7bcccb57 | 6730 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 6731 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 6732 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
7bcccb57 | 6733 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 6734 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 6735 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
7bcccb57 MS |
6736 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
6737 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
389b8029 | 6738 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
7bcccb57 MS |
6739 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
6740 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: | |
1ada945d | 6741 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
6742 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
6743 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a6bb11b2 | 6744 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
7bcccb57 | 6745 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 6746 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 6747 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 6748 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
a6bb11b2 | 6749 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 6750 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
7bcccb57 | 6751 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 6752 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
6753 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
6754 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
73f925cc | 6755 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 6756 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 6757 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a6bb11b2 | 6758 | if (h != NULL) |
59c108f7 NC |
6759 | { |
6760 | if (h->got.refcount > 0) | |
6761 | h->got.refcount -= 1; | |
1419bbe5 WN |
6762 | |
6763 | if (h->type == STT_GNU_IFUNC) | |
6764 | { | |
6765 | if (h->plt.refcount > 0) | |
6766 | h->plt.refcount -= 1; | |
6767 | } | |
59c108f7 | 6768 | } |
cb8af559 | 6769 | else if (locals != NULL) |
59c108f7 | 6770 | { |
cb8af559 NC |
6771 | if (locals[r_symndx].got_refcount > 0) |
6772 | locals[r_symndx].got_refcount -= 1; | |
59c108f7 NC |
6773 | } |
6774 | break; | |
6775 | ||
a6bb11b2 YZ |
6776 | case BFD_RELOC_AARCH64_CALL26: |
6777 | case BFD_RELOC_AARCH64_JUMP26: | |
6778 | /* If this is a local symbol then we resolve it | |
6779 | directly without creating a PLT entry. */ | |
59c108f7 NC |
6780 | if (h == NULL) |
6781 | continue; | |
6782 | ||
6783 | if (h->plt.refcount > 0) | |
6784 | h->plt.refcount -= 1; | |
6785 | break; | |
6786 | ||
ce336788 JW |
6787 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
6788 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
6789 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
614b09ce JW |
6790 | case BFD_RELOC_AARCH64_MOVW_G0_NC: |
6791 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
6792 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
6793 | case BFD_RELOC_AARCH64_MOVW_G3: | |
a6bb11b2 | 6794 | case BFD_RELOC_AARCH64_NN: |
0e1862bb | 6795 | if (h != NULL && bfd_link_executable (info)) |
59c108f7 NC |
6796 | { |
6797 | if (h->plt.refcount > 0) | |
6798 | h->plt.refcount -= 1; | |
6799 | } | |
6800 | break; | |
cec5225b | 6801 | |
59c108f7 NC |
6802 | default: |
6803 | break; | |
6804 | } | |
6805 | } | |
6806 | ||
a06ea964 NC |
6807 | return TRUE; |
6808 | } | |
6809 | ||
6810 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
6811 | regular object. The current definition is in some section of the | |
6812 | dynamic object, but we're not including those sections. We have to | |
6813 | change the definition to something the rest of the link can | |
6814 | understand. */ | |
6815 | ||
6816 | static bfd_boolean | |
cec5225b | 6817 | elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info, |
a06ea964 NC |
6818 | struct elf_link_hash_entry *h) |
6819 | { | |
cec5225b | 6820 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
6821 | asection *s; |
6822 | ||
6823 | /* If this is a function, put it in the procedure linkage table. We | |
6824 | will fill in the contents of the procedure linkage table later, | |
6825 | when we know the address of the .got section. */ | |
1419bbe5 | 6826 | if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt) |
a06ea964 NC |
6827 | { |
6828 | if (h->plt.refcount <= 0 | |
1419bbe5 WN |
6829 | || (h->type != STT_GNU_IFUNC |
6830 | && (SYMBOL_CALLS_LOCAL (info, h) | |
6831 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
6832 | && h->root.type == bfd_link_hash_undefweak)))) | |
a06ea964 NC |
6833 | { |
6834 | /* This case can occur if we saw a CALL26 reloc in | |
6835 | an input file, but the symbol wasn't referred to | |
6836 | by a dynamic object or all references were | |
6837 | garbage collected. In which case we can end up | |
6838 | resolving. */ | |
6839 | h->plt.offset = (bfd_vma) - 1; | |
6840 | h->needs_plt = 0; | |
6841 | } | |
6842 | ||
6843 | return TRUE; | |
6844 | } | |
6845 | else | |
80de0c6d | 6846 | /* Otherwise, reset to -1. */ |
a06ea964 NC |
6847 | h->plt.offset = (bfd_vma) - 1; |
6848 | ||
6849 | ||
6850 | /* If this is a weak symbol, and there is a real definition, the | |
6851 | processor independent code will have arranged for us to see the | |
6852 | real definition first, and we can just use the same value. */ | |
6853 | if (h->u.weakdef != NULL) | |
6854 | { | |
6855 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
6856 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
6857 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
6858 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
6859 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) | |
6860 | h->non_got_ref = h->u.weakdef->non_got_ref; | |
6861 | return TRUE; | |
6862 | } | |
6863 | ||
6864 | /* If we are creating a shared library, we must presume that the | |
6865 | only references to the symbol are via the global offset table. | |
6866 | For such cases we need not do anything here; the relocations will | |
6867 | be handled correctly by relocate_section. */ | |
0e1862bb | 6868 | if (bfd_link_pic (info)) |
a06ea964 NC |
6869 | return TRUE; |
6870 | ||
6871 | /* If there are no references to this symbol that do not use the | |
6872 | GOT, we don't need to generate a copy reloc. */ | |
6873 | if (!h->non_got_ref) | |
6874 | return TRUE; | |
6875 | ||
6876 | /* If -z nocopyreloc was given, we won't generate them either. */ | |
6877 | if (info->nocopyreloc) | |
6878 | { | |
6879 | h->non_got_ref = 0; | |
6880 | return TRUE; | |
6881 | } | |
6882 | ||
6883 | /* We must allocate the symbol in our .dynbss section, which will | |
6884 | become part of the .bss section of the executable. There will be | |
6885 | an entry for this symbol in the .dynsym section. The dynamic | |
6886 | object will contain position independent code, so all references | |
6887 | from the dynamic object to this symbol will go through the global | |
6888 | offset table. The dynamic linker will use the .dynsym entry to | |
6889 | determine the address it must put in the global offset table, so | |
6890 | both the dynamic object and the regular object will refer to the | |
6891 | same memory location for the variable. */ | |
6892 | ||
cec5225b | 6893 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
6894 | |
6895 | /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker | |
6896 | to copy the initial value out of the dynamic object and into the | |
6897 | runtime process image. */ | |
6898 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) | |
6899 | { | |
6900 | htab->srelbss->size += RELOC_SIZE (htab); | |
6901 | h->needs_copy = 1; | |
6902 | } | |
6903 | ||
6904 | s = htab->sdynbss; | |
6905 | ||
6cabe1ea | 6906 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
a06ea964 NC |
6907 | |
6908 | } | |
6909 | ||
6910 | static bfd_boolean | |
cec5225b | 6911 | elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number) |
a06ea964 NC |
6912 | { |
6913 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 6914 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
6915 | if (locals == NULL) |
6916 | { | |
6917 | locals = (struct elf_aarch64_local_symbol *) | |
6918 | bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol)); | |
6919 | if (locals == NULL) | |
6920 | return FALSE; | |
cec5225b | 6921 | elf_aarch64_locals (abfd) = locals; |
a06ea964 NC |
6922 | } |
6923 | return TRUE; | |
6924 | } | |
6925 | ||
cc0efaa8 MS |
6926 | /* Create the .got section to hold the global offset table. */ |
6927 | ||
6928 | static bfd_boolean | |
6929 | aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) | |
6930 | { | |
6931 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
6932 | flagword flags; | |
6933 | asection *s; | |
6934 | struct elf_link_hash_entry *h; | |
6935 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
6936 | ||
6937 | /* This function may be called more than once. */ | |
6938 | s = bfd_get_linker_section (abfd, ".got"); | |
6939 | if (s != NULL) | |
6940 | return TRUE; | |
6941 | ||
6942 | flags = bed->dynamic_sec_flags; | |
6943 | ||
6944 | s = bfd_make_section_anyway_with_flags (abfd, | |
6945 | (bed->rela_plts_and_copies_p | |
6946 | ? ".rela.got" : ".rel.got"), | |
6947 | (bed->dynamic_sec_flags | |
6948 | | SEC_READONLY)); | |
6949 | if (s == NULL | |
6950 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
6951 | return FALSE; | |
6952 | htab->srelgot = s; | |
6953 | ||
6954 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); | |
6955 | if (s == NULL | |
6956 | || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
6957 | return FALSE; | |
6958 | htab->sgot = s; | |
6959 | htab->sgot->size += GOT_ENTRY_SIZE; | |
6960 | ||
6961 | if (bed->want_got_sym) | |
6962 | { | |
6963 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
6964 | (or .got.plt) section. We don't do this in the linker script | |
6965 | because we don't want to define the symbol if we are not creating | |
6966 | a global offset table. */ | |
6967 | h = _bfd_elf_define_linkage_sym (abfd, info, s, | |
6968 | "_GLOBAL_OFFSET_TABLE_"); | |
6969 | elf_hash_table (info)->hgot = h; | |
6970 | if (h == NULL) | |
6971 | return FALSE; | |
6972 | } | |
6973 | ||
6974 | if (bed->want_got_plt) | |
6975 | { | |
6976 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); | |
6977 | if (s == NULL | |
6978 | || !bfd_set_section_alignment (abfd, s, | |
6979 | bed->s->log_file_align)) | |
6980 | return FALSE; | |
6981 | htab->sgotplt = s; | |
6982 | } | |
6983 | ||
6984 | /* The first bit of the global offset table is the header. */ | |
6985 | s->size += bed->got_header_size; | |
6986 | ||
6987 | return TRUE; | |
6988 | } | |
6989 | ||
a06ea964 NC |
6990 | /* Look through the relocs for a section during the first phase. */ |
6991 | ||
6992 | static bfd_boolean | |
cec5225b | 6993 | elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
a06ea964 NC |
6994 | asection *sec, const Elf_Internal_Rela *relocs) |
6995 | { | |
6996 | Elf_Internal_Shdr *symtab_hdr; | |
6997 | struct elf_link_hash_entry **sym_hashes; | |
6998 | const Elf_Internal_Rela *rel; | |
6999 | const Elf_Internal_Rela *rel_end; | |
7000 | asection *sreloc; | |
7001 | ||
cec5225b | 7002 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 7003 | |
0e1862bb | 7004 | if (bfd_link_relocatable (info)) |
a06ea964 NC |
7005 | return TRUE; |
7006 | ||
7007 | BFD_ASSERT (is_aarch64_elf (abfd)); | |
7008 | ||
cec5225b | 7009 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7010 | sreloc = NULL; |
7011 | ||
7012 | symtab_hdr = &elf_symtab_hdr (abfd); | |
7013 | sym_hashes = elf_sym_hashes (abfd); | |
a06ea964 NC |
7014 | |
7015 | rel_end = relocs + sec->reloc_count; | |
7016 | for (rel = relocs; rel < rel_end; rel++) | |
7017 | { | |
7018 | struct elf_link_hash_entry *h; | |
7019 | unsigned long r_symndx; | |
7020 | unsigned int r_type; | |
a6bb11b2 | 7021 | bfd_reloc_code_real_type bfd_r_type; |
1419bbe5 | 7022 | Elf_Internal_Sym *isym; |
a06ea964 | 7023 | |
cec5225b YZ |
7024 | r_symndx = ELFNN_R_SYM (rel->r_info); |
7025 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 NC |
7026 | |
7027 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
7028 | { | |
7029 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd, | |
7030 | r_symndx); | |
7031 | return FALSE; | |
7032 | } | |
7033 | ||
ed5acf27 | 7034 | if (r_symndx < symtab_hdr->sh_info) |
1419bbe5 WN |
7035 | { |
7036 | /* A local symbol. */ | |
7037 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
7038 | abfd, r_symndx); | |
7039 | if (isym == NULL) | |
7040 | return FALSE; | |
7041 | ||
7042 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
7043 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
7044 | { | |
7045 | h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, | |
7046 | TRUE); | |
7047 | if (h == NULL) | |
7048 | return FALSE; | |
7049 | ||
7050 | /* Fake a STT_GNU_IFUNC symbol. */ | |
7051 | h->type = STT_GNU_IFUNC; | |
7052 | h->def_regular = 1; | |
7053 | h->ref_regular = 1; | |
7054 | h->forced_local = 1; | |
7055 | h->root.type = bfd_link_hash_defined; | |
7056 | } | |
7057 | else | |
7058 | h = NULL; | |
7059 | } | |
a06ea964 NC |
7060 | else |
7061 | { | |
7062 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
7063 | while (h->root.type == bfd_link_hash_indirect | |
7064 | || h->root.type == bfd_link_hash_warning) | |
7065 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 AM |
7066 | |
7067 | /* PR15323, ref flags aren't set for references in the same | |
7068 | object. */ | |
7069 | h->root.non_ir_ref = 1; | |
a06ea964 NC |
7070 | } |
7071 | ||
7072 | /* Could be done earlier, if h were already available. */ | |
a6bb11b2 | 7073 | bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx); |
a06ea964 | 7074 | |
1419bbe5 WN |
7075 | if (h != NULL) |
7076 | { | |
18f822a0 JW |
7077 | /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. |
7078 | This shows up in particular in an R_AARCH64_PREL64 in large model | |
7079 | when calculating the pc-relative address to .got section which is | |
7080 | used to initialize the gp register. */ | |
7081 | if (h->root.root.string | |
7082 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
7083 | { | |
7084 | if (htab->root.dynobj == NULL) | |
7085 | htab->root.dynobj = abfd; | |
7086 | ||
7087 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
7088 | return FALSE; | |
7089 | ||
7090 | BFD_ASSERT (h == htab->root.hgot); | |
7091 | } | |
7092 | ||
1419bbe5 WN |
7093 | /* Create the ifunc sections for static executables. If we |
7094 | never see an indirect function symbol nor we are building | |
7095 | a static executable, those sections will be empty and | |
7096 | won't appear in output. */ | |
7097 | switch (bfd_r_type) | |
7098 | { | |
7099 | default: | |
7100 | break; | |
7101 | ||
ce336788 JW |
7102 | case BFD_RELOC_AARCH64_ADD_LO12: |
7103 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: | |
7104 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
1419bbe5 | 7105 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 7106 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
1419bbe5 | 7107 | case BFD_RELOC_AARCH64_JUMP26: |
7018c030 | 7108 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
1419bbe5 | 7109 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 7110 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 7111 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
1419bbe5 | 7112 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 7113 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 7114 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
ce336788 | 7115 | case BFD_RELOC_AARCH64_NN: |
1419bbe5 WN |
7116 | if (htab->root.dynobj == NULL) |
7117 | htab->root.dynobj = abfd; | |
7118 | if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info)) | |
7119 | return FALSE; | |
7120 | break; | |
7121 | } | |
7122 | ||
7123 | /* It is referenced by a non-shared object. */ | |
7124 | h->ref_regular = 1; | |
7125 | h->root.non_ir_ref = 1; | |
7126 | } | |
7127 | ||
a6bb11b2 | 7128 | switch (bfd_r_type) |
a06ea964 | 7129 | { |
a6bb11b2 | 7130 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
7131 | |
7132 | /* We don't need to handle relocs into sections not going into | |
7133 | the "real" output. */ | |
7134 | if ((sec->flags & SEC_ALLOC) == 0) | |
7135 | break; | |
7136 | ||
7137 | if (h != NULL) | |
7138 | { | |
0e1862bb | 7139 | if (!bfd_link_pic (info)) |
a06ea964 NC |
7140 | h->non_got_ref = 1; |
7141 | ||
7142 | h->plt.refcount += 1; | |
7143 | h->pointer_equality_needed = 1; | |
7144 | } | |
7145 | ||
7146 | /* No need to do anything if we're not creating a shared | |
7147 | object. */ | |
0e1862bb | 7148 | if (! bfd_link_pic (info)) |
a06ea964 NC |
7149 | break; |
7150 | ||
7151 | { | |
7152 | struct elf_dyn_relocs *p; | |
7153 | struct elf_dyn_relocs **head; | |
7154 | ||
7155 | /* We must copy these reloc types into the output file. | |
7156 | Create a reloc section in dynobj and make room for | |
7157 | this reloc. */ | |
7158 | if (sreloc == NULL) | |
7159 | { | |
7160 | if (htab->root.dynobj == NULL) | |
7161 | htab->root.dynobj = abfd; | |
7162 | ||
7163 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
0608afa7 | 7164 | (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE); |
a06ea964 NC |
7165 | |
7166 | if (sreloc == NULL) | |
7167 | return FALSE; | |
7168 | } | |
7169 | ||
7170 | /* If this is a global symbol, we count the number of | |
7171 | relocations we need for this symbol. */ | |
7172 | if (h != NULL) | |
7173 | { | |
cec5225b YZ |
7174 | struct elf_aarch64_link_hash_entry *eh; |
7175 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
7176 | head = &eh->dyn_relocs; |
7177 | } | |
7178 | else | |
7179 | { | |
7180 | /* Track dynamic relocs needed for local syms too. | |
7181 | We really need local syms available to do this | |
7182 | easily. Oh well. */ | |
7183 | ||
7184 | asection *s; | |
7185 | void **vpp; | |
a06ea964 NC |
7186 | |
7187 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
7188 | abfd, r_symndx); | |
7189 | if (isym == NULL) | |
7190 | return FALSE; | |
7191 | ||
7192 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
7193 | if (s == NULL) | |
7194 | s = sec; | |
7195 | ||
7196 | /* Beware of type punned pointers vs strict aliasing | |
7197 | rules. */ | |
7198 | vpp = &(elf_section_data (s)->local_dynrel); | |
7199 | head = (struct elf_dyn_relocs **) vpp; | |
7200 | } | |
7201 | ||
7202 | p = *head; | |
7203 | if (p == NULL || p->sec != sec) | |
7204 | { | |
7205 | bfd_size_type amt = sizeof *p; | |
7206 | p = ((struct elf_dyn_relocs *) | |
7207 | bfd_zalloc (htab->root.dynobj, amt)); | |
7208 | if (p == NULL) | |
7209 | return FALSE; | |
7210 | p->next = *head; | |
7211 | *head = p; | |
7212 | p->sec = sec; | |
7213 | } | |
7214 | ||
7215 | p->count += 1; | |
7216 | ||
7217 | } | |
7218 | break; | |
7219 | ||
7220 | /* RR: We probably want to keep a consistency check that | |
7221 | there are no dangling GOT_PAGE relocs. */ | |
a6bb11b2 | 7222 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
7bcccb57 | 7223 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
7018c030 | 7224 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
7bcccb57 | 7225 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 7226 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 7227 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
7bcccb57 | 7228 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 7229 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 7230 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
7bcccb57 MS |
7231 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
7232 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
389b8029 | 7233 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
7bcccb57 MS |
7234 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
7235 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: | |
1ada945d | 7236 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
7237 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
7238 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a6bb11b2 | 7239 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
7bcccb57 | 7240 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 7241 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 7242 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 7243 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
a6bb11b2 | 7244 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 7245 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
7bcccb57 | 7246 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 7247 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
7248 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
7249 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
73f925cc | 7250 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 7251 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 7252 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
b7a944fe RL |
7253 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: |
7254 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
7255 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
a06ea964 NC |
7256 | { |
7257 | unsigned got_type; | |
7258 | unsigned old_got_type; | |
7259 | ||
a6bb11b2 | 7260 | got_type = aarch64_reloc_got_type (bfd_r_type); |
a06ea964 NC |
7261 | |
7262 | if (h) | |
7263 | { | |
7264 | h->got.refcount += 1; | |
cec5225b | 7265 | old_got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
7266 | } |
7267 | else | |
7268 | { | |
7269 | struct elf_aarch64_local_symbol *locals; | |
7270 | ||
cec5225b | 7271 | if (!elfNN_aarch64_allocate_local_symbols |
a06ea964 NC |
7272 | (abfd, symtab_hdr->sh_info)) |
7273 | return FALSE; | |
7274 | ||
cec5225b | 7275 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
7276 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
7277 | locals[r_symndx].got_refcount += 1; | |
7278 | old_got_type = locals[r_symndx].got_type; | |
7279 | } | |
7280 | ||
7281 | /* If a variable is accessed with both general dynamic TLS | |
7282 | methods, two slots may be created. */ | |
7283 | if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type)) | |
7284 | got_type |= old_got_type; | |
7285 | ||
7286 | /* We will already have issued an error message if there | |
7287 | is a TLS/non-TLS mismatch, based on the symbol type. | |
7288 | So just combine any TLS types needed. */ | |
7289 | if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL | |
7290 | && got_type != GOT_NORMAL) | |
7291 | got_type |= old_got_type; | |
7292 | ||
7293 | /* If the symbol is accessed by both IE and GD methods, we | |
7294 | are able to relax. Turn off the GD flag, without | |
7295 | messing up with any other kind of TLS types that may be | |
7296 | involved. */ | |
7297 | if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type)) | |
7298 | got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD); | |
7299 | ||
7300 | if (old_got_type != got_type) | |
7301 | { | |
7302 | if (h != NULL) | |
cec5225b | 7303 | elf_aarch64_hash_entry (h)->got_type = got_type; |
a06ea964 NC |
7304 | else |
7305 | { | |
7306 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 7307 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
7308 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
7309 | locals[r_symndx].got_type = got_type; | |
7310 | } | |
7311 | } | |
7312 | ||
cc0efaa8 MS |
7313 | if (htab->root.dynobj == NULL) |
7314 | htab->root.dynobj = abfd; | |
7315 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
7316 | return FALSE; | |
a06ea964 NC |
7317 | break; |
7318 | } | |
7319 | ||
614b09ce JW |
7320 | case BFD_RELOC_AARCH64_MOVW_G0_NC: |
7321 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
7322 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
7323 | case BFD_RELOC_AARCH64_MOVW_G3: | |
0e1862bb | 7324 | if (bfd_link_pic (info)) |
614b09ce JW |
7325 | { |
7326 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
7327 | (*_bfd_error_handler) | |
7328 | (_("%B: relocation %s against `%s' can not be used when making " | |
7329 | "a shared object; recompile with -fPIC"), | |
7330 | abfd, elfNN_aarch64_howto_table[howto_index].name, | |
7331 | (h) ? h->root.root.string : "a local symbol"); | |
7332 | bfd_set_error (bfd_error_bad_value); | |
7333 | return FALSE; | |
7334 | } | |
7335 | ||
a6bb11b2 YZ |
7336 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
7337 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
7338 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
0e1862bb | 7339 | if (h != NULL && bfd_link_executable (info)) |
a06ea964 NC |
7340 | { |
7341 | /* If this reloc is in a read-only section, we might | |
7342 | need a copy reloc. We can't check reliably at this | |
7343 | stage whether the section is read-only, as input | |
7344 | sections have not yet been mapped to output sections. | |
7345 | Tentatively set the flag for now, and correct in | |
7346 | adjust_dynamic_symbol. */ | |
7347 | h->non_got_ref = 1; | |
7348 | h->plt.refcount += 1; | |
7349 | h->pointer_equality_needed = 1; | |
7350 | } | |
7351 | /* FIXME:: RR need to handle these in shared libraries | |
7352 | and essentially bomb out as these being non-PIC | |
7353 | relocations in shared libraries. */ | |
7354 | break; | |
7355 | ||
a6bb11b2 YZ |
7356 | case BFD_RELOC_AARCH64_CALL26: |
7357 | case BFD_RELOC_AARCH64_JUMP26: | |
a06ea964 NC |
7358 | /* If this is a local symbol then we resolve it |
7359 | directly without creating a PLT entry. */ | |
7360 | if (h == NULL) | |
7361 | continue; | |
7362 | ||
7363 | h->needs_plt = 1; | |
1419bbe5 WN |
7364 | if (h->plt.refcount <= 0) |
7365 | h->plt.refcount = 1; | |
7366 | else | |
7367 | h->plt.refcount += 1; | |
a06ea964 | 7368 | break; |
a6bb11b2 YZ |
7369 | |
7370 | default: | |
7371 | break; | |
a06ea964 NC |
7372 | } |
7373 | } | |
a6bb11b2 | 7374 | |
a06ea964 NC |
7375 | return TRUE; |
7376 | } | |
7377 | ||
7378 | /* Treat mapping symbols as special target symbols. */ | |
7379 | ||
7380 | static bfd_boolean | |
cec5225b | 7381 | elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
7382 | asymbol *sym) |
7383 | { | |
7384 | return bfd_is_aarch64_special_symbol_name (sym->name, | |
7385 | BFD_AARCH64_SPECIAL_SYM_TYPE_ANY); | |
7386 | } | |
7387 | ||
7388 | /* This is a copy of elf_find_function () from elf.c except that | |
7389 | AArch64 mapping symbols are ignored when looking for function names. */ | |
7390 | ||
7391 | static bfd_boolean | |
7392 | aarch64_elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, | |
a06ea964 | 7393 | asymbol **symbols, |
fb167eb2 | 7394 | asection *section, |
a06ea964 NC |
7395 | bfd_vma offset, |
7396 | const char **filename_ptr, | |
7397 | const char **functionname_ptr) | |
7398 | { | |
7399 | const char *filename = NULL; | |
7400 | asymbol *func = NULL; | |
7401 | bfd_vma low_func = 0; | |
7402 | asymbol **p; | |
7403 | ||
7404 | for (p = symbols; *p != NULL; p++) | |
7405 | { | |
7406 | elf_symbol_type *q; | |
7407 | ||
7408 | q = (elf_symbol_type *) * p; | |
7409 | ||
7410 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) | |
7411 | { | |
7412 | default: | |
7413 | break; | |
7414 | case STT_FILE: | |
7415 | filename = bfd_asymbol_name (&q->symbol); | |
7416 | break; | |
7417 | case STT_FUNC: | |
7418 | case STT_NOTYPE: | |
7419 | /* Skip mapping symbols. */ | |
7420 | if ((q->symbol.flags & BSF_LOCAL) | |
7421 | && (bfd_is_aarch64_special_symbol_name | |
7422 | (q->symbol.name, BFD_AARCH64_SPECIAL_SYM_TYPE_ANY))) | |
7423 | continue; | |
7424 | /* Fall through. */ | |
7425 | if (bfd_get_section (&q->symbol) == section | |
7426 | && q->symbol.value >= low_func && q->symbol.value <= offset) | |
7427 | { | |
7428 | func = (asymbol *) q; | |
7429 | low_func = q->symbol.value; | |
7430 | } | |
7431 | break; | |
7432 | } | |
7433 | } | |
7434 | ||
7435 | if (func == NULL) | |
7436 | return FALSE; | |
7437 | ||
7438 | if (filename_ptr) | |
7439 | *filename_ptr = filename; | |
7440 | if (functionname_ptr) | |
7441 | *functionname_ptr = bfd_asymbol_name (func); | |
7442 | ||
7443 | return TRUE; | |
7444 | } | |
7445 | ||
7446 | ||
7447 | /* Find the nearest line to a particular section and offset, for error | |
7448 | reporting. This code is a duplicate of the code in elf.c, except | |
7449 | that it uses aarch64_elf_find_function. */ | |
7450 | ||
7451 | static bfd_boolean | |
cec5225b | 7452 | elfNN_aarch64_find_nearest_line (bfd *abfd, |
a06ea964 | 7453 | asymbol **symbols, |
fb167eb2 | 7454 | asection *section, |
a06ea964 NC |
7455 | bfd_vma offset, |
7456 | const char **filename_ptr, | |
7457 | const char **functionname_ptr, | |
fb167eb2 AM |
7458 | unsigned int *line_ptr, |
7459 | unsigned int *discriminator_ptr) | |
a06ea964 NC |
7460 | { |
7461 | bfd_boolean found = FALSE; | |
7462 | ||
fb167eb2 | 7463 | if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset, |
a06ea964 | 7464 | filename_ptr, functionname_ptr, |
fb167eb2 AM |
7465 | line_ptr, discriminator_ptr, |
7466 | dwarf_debug_sections, 0, | |
a06ea964 NC |
7467 | &elf_tdata (abfd)->dwarf2_find_line_info)) |
7468 | { | |
7469 | if (!*functionname_ptr) | |
fb167eb2 | 7470 | aarch64_elf_find_function (abfd, symbols, section, offset, |
a06ea964 NC |
7471 | *filename_ptr ? NULL : filename_ptr, |
7472 | functionname_ptr); | |
7473 | ||
7474 | return TRUE; | |
7475 | } | |
7476 | ||
fb167eb2 AM |
7477 | /* Skip _bfd_dwarf1_find_nearest_line since no known AArch64 |
7478 | toolchain uses DWARF1. */ | |
7479 | ||
a06ea964 NC |
7480 | if (!_bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, |
7481 | &found, filename_ptr, | |
7482 | functionname_ptr, line_ptr, | |
7483 | &elf_tdata (abfd)->line_info)) | |
7484 | return FALSE; | |
7485 | ||
7486 | if (found && (*functionname_ptr || *line_ptr)) | |
7487 | return TRUE; | |
7488 | ||
7489 | if (symbols == NULL) | |
7490 | return FALSE; | |
7491 | ||
fb167eb2 | 7492 | if (!aarch64_elf_find_function (abfd, symbols, section, offset, |
a06ea964 NC |
7493 | filename_ptr, functionname_ptr)) |
7494 | return FALSE; | |
7495 | ||
7496 | *line_ptr = 0; | |
7497 | return TRUE; | |
7498 | } | |
7499 | ||
7500 | static bfd_boolean | |
cec5225b | 7501 | elfNN_aarch64_find_inliner_info (bfd *abfd, |
a06ea964 NC |
7502 | const char **filename_ptr, |
7503 | const char **functionname_ptr, | |
7504 | unsigned int *line_ptr) | |
7505 | { | |
7506 | bfd_boolean found; | |
7507 | found = _bfd_dwarf2_find_inliner_info | |
7508 | (abfd, filename_ptr, | |
7509 | functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info); | |
7510 | return found; | |
7511 | } | |
7512 | ||
7513 | ||
7514 | static void | |
cec5225b | 7515 | elfNN_aarch64_post_process_headers (bfd *abfd, |
1419bbe5 | 7516 | struct bfd_link_info *link_info) |
a06ea964 NC |
7517 | { |
7518 | Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */ | |
7519 | ||
7520 | i_ehdrp = elf_elfheader (abfd); | |
a06ea964 | 7521 | i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION; |
1419bbe5 | 7522 | |
78245035 | 7523 | _bfd_elf_post_process_headers (abfd, link_info); |
a06ea964 NC |
7524 | } |
7525 | ||
7526 | static enum elf_reloc_type_class | |
cec5225b | 7527 | elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
7e612e98 AM |
7528 | const asection *rel_sec ATTRIBUTE_UNUSED, |
7529 | const Elf_Internal_Rela *rela) | |
a06ea964 | 7530 | { |
cec5225b | 7531 | switch ((int) ELFNN_R_TYPE (rela->r_info)) |
a06ea964 | 7532 | { |
a6bb11b2 | 7533 | case AARCH64_R (RELATIVE): |
a06ea964 | 7534 | return reloc_class_relative; |
a6bb11b2 | 7535 | case AARCH64_R (JUMP_SLOT): |
a06ea964 | 7536 | return reloc_class_plt; |
a6bb11b2 | 7537 | case AARCH64_R (COPY): |
a06ea964 NC |
7538 | return reloc_class_copy; |
7539 | default: | |
7540 | return reloc_class_normal; | |
7541 | } | |
7542 | } | |
7543 | ||
a06ea964 NC |
7544 | /* Handle an AArch64 specific section when reading an object file. This is |
7545 | called when bfd_section_from_shdr finds a section with an unknown | |
7546 | type. */ | |
7547 | ||
7548 | static bfd_boolean | |
cec5225b | 7549 | elfNN_aarch64_section_from_shdr (bfd *abfd, |
a06ea964 NC |
7550 | Elf_Internal_Shdr *hdr, |
7551 | const char *name, int shindex) | |
7552 | { | |
7553 | /* There ought to be a place to keep ELF backend specific flags, but | |
7554 | at the moment there isn't one. We just keep track of the | |
7555 | sections by their name, instead. Fortunately, the ABI gives | |
7556 | names for all the AArch64 specific sections, so we will probably get | |
7557 | away with this. */ | |
7558 | switch (hdr->sh_type) | |
7559 | { | |
7560 | case SHT_AARCH64_ATTRIBUTES: | |
7561 | break; | |
7562 | ||
7563 | default: | |
7564 | return FALSE; | |
7565 | } | |
7566 | ||
7567 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
7568 | return FALSE; | |
7569 | ||
7570 | return TRUE; | |
7571 | } | |
7572 | ||
7573 | /* A structure used to record a list of sections, independently | |
7574 | of the next and prev fields in the asection structure. */ | |
7575 | typedef struct section_list | |
7576 | { | |
7577 | asection *sec; | |
7578 | struct section_list *next; | |
7579 | struct section_list *prev; | |
7580 | } | |
7581 | section_list; | |
7582 | ||
7583 | /* Unfortunately we need to keep a list of sections for which | |
7584 | an _aarch64_elf_section_data structure has been allocated. This | |
cec5225b | 7585 | is because it is possible for functions like elfNN_aarch64_write_section |
a06ea964 NC |
7586 | to be called on a section which has had an elf_data_structure |
7587 | allocated for it (and so the used_by_bfd field is valid) but | |
7588 | for which the AArch64 extended version of this structure - the | |
7589 | _aarch64_elf_section_data structure - has not been allocated. */ | |
7590 | static section_list *sections_with_aarch64_elf_section_data = NULL; | |
7591 | ||
7592 | static void | |
7593 | record_section_with_aarch64_elf_section_data (asection *sec) | |
7594 | { | |
7595 | struct section_list *entry; | |
7596 | ||
7597 | entry = bfd_malloc (sizeof (*entry)); | |
7598 | if (entry == NULL) | |
7599 | return; | |
7600 | entry->sec = sec; | |
7601 | entry->next = sections_with_aarch64_elf_section_data; | |
7602 | entry->prev = NULL; | |
7603 | if (entry->next != NULL) | |
7604 | entry->next->prev = entry; | |
7605 | sections_with_aarch64_elf_section_data = entry; | |
7606 | } | |
7607 | ||
7608 | static struct section_list * | |
7609 | find_aarch64_elf_section_entry (asection *sec) | |
7610 | { | |
7611 | struct section_list *entry; | |
7612 | static struct section_list *last_entry = NULL; | |
7613 | ||
7614 | /* This is a short cut for the typical case where the sections are added | |
7615 | to the sections_with_aarch64_elf_section_data list in forward order and | |
7616 | then looked up here in backwards order. This makes a real difference | |
7617 | to the ld-srec/sec64k.exp linker test. */ | |
7618 | entry = sections_with_aarch64_elf_section_data; | |
7619 | if (last_entry != NULL) | |
7620 | { | |
7621 | if (last_entry->sec == sec) | |
7622 | entry = last_entry; | |
7623 | else if (last_entry->next != NULL && last_entry->next->sec == sec) | |
7624 | entry = last_entry->next; | |
7625 | } | |
7626 | ||
7627 | for (; entry; entry = entry->next) | |
7628 | if (entry->sec == sec) | |
7629 | break; | |
7630 | ||
7631 | if (entry) | |
7632 | /* Record the entry prior to this one - it is the entry we are | |
7633 | most likely to want to locate next time. Also this way if we | |
7634 | have been called from | |
7635 | unrecord_section_with_aarch64_elf_section_data () we will not | |
7636 | be caching a pointer that is about to be freed. */ | |
7637 | last_entry = entry->prev; | |
7638 | ||
7639 | return entry; | |
7640 | } | |
7641 | ||
7642 | static void | |
7643 | unrecord_section_with_aarch64_elf_section_data (asection *sec) | |
7644 | { | |
7645 | struct section_list *entry; | |
7646 | ||
7647 | entry = find_aarch64_elf_section_entry (sec); | |
7648 | ||
7649 | if (entry) | |
7650 | { | |
7651 | if (entry->prev != NULL) | |
7652 | entry->prev->next = entry->next; | |
7653 | if (entry->next != NULL) | |
7654 | entry->next->prev = entry->prev; | |
7655 | if (entry == sections_with_aarch64_elf_section_data) | |
7656 | sections_with_aarch64_elf_section_data = entry->next; | |
7657 | free (entry); | |
7658 | } | |
7659 | } | |
7660 | ||
7661 | ||
7662 | typedef struct | |
7663 | { | |
7664 | void *finfo; | |
7665 | struct bfd_link_info *info; | |
7666 | asection *sec; | |
7667 | int sec_shndx; | |
7668 | int (*func) (void *, const char *, Elf_Internal_Sym *, | |
7669 | asection *, struct elf_link_hash_entry *); | |
7670 | } output_arch_syminfo; | |
7671 | ||
7672 | enum map_symbol_type | |
7673 | { | |
7674 | AARCH64_MAP_INSN, | |
7675 | AARCH64_MAP_DATA | |
7676 | }; | |
7677 | ||
7678 | ||
7679 | /* Output a single mapping symbol. */ | |
7680 | ||
7681 | static bfd_boolean | |
cec5225b | 7682 | elfNN_aarch64_output_map_sym (output_arch_syminfo *osi, |
a06ea964 NC |
7683 | enum map_symbol_type type, bfd_vma offset) |
7684 | { | |
7685 | static const char *names[2] = { "$x", "$d" }; | |
7686 | Elf_Internal_Sym sym; | |
7687 | ||
7688 | sym.st_value = (osi->sec->output_section->vma | |
7689 | + osi->sec->output_offset + offset); | |
7690 | sym.st_size = 0; | |
7691 | sym.st_other = 0; | |
7692 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
7693 | sym.st_shndx = osi->sec_shndx; | |
7694 | return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1; | |
7695 | } | |
7696 | ||
a06ea964 NC |
7697 | /* Output a single local symbol for a generated stub. */ |
7698 | ||
7699 | static bfd_boolean | |
cec5225b | 7700 | elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name, |
a06ea964 NC |
7701 | bfd_vma offset, bfd_vma size) |
7702 | { | |
7703 | Elf_Internal_Sym sym; | |
7704 | ||
7705 | sym.st_value = (osi->sec->output_section->vma | |
7706 | + osi->sec->output_offset + offset); | |
7707 | sym.st_size = size; | |
7708 | sym.st_other = 0; | |
7709 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
7710 | sym.st_shndx = osi->sec_shndx; | |
7711 | return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1; | |
7712 | } | |
7713 | ||
7714 | static bfd_boolean | |
7715 | aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) | |
7716 | { | |
cec5225b | 7717 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
7718 | asection *stub_sec; |
7719 | bfd_vma addr; | |
7720 | char *stub_name; | |
7721 | output_arch_syminfo *osi; | |
7722 | ||
7723 | /* Massage our args to the form they really have. */ | |
cec5225b | 7724 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
7725 | osi = (output_arch_syminfo *) in_arg; |
7726 | ||
7727 | stub_sec = stub_entry->stub_sec; | |
7728 | ||
7729 | /* Ensure this stub is attached to the current section being | |
7730 | processed. */ | |
7731 | if (stub_sec != osi->sec) | |
7732 | return TRUE; | |
7733 | ||
7734 | addr = (bfd_vma) stub_entry->stub_offset; | |
7735 | ||
7736 | stub_name = stub_entry->output_name; | |
7737 | ||
7738 | switch (stub_entry->stub_type) | |
7739 | { | |
7740 | case aarch64_stub_adrp_branch: | |
cec5225b | 7741 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, |
a06ea964 NC |
7742 | sizeof (aarch64_adrp_branch_stub))) |
7743 | return FALSE; | |
cec5225b | 7744 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 NC |
7745 | return FALSE; |
7746 | break; | |
7747 | case aarch64_stub_long_branch: | |
cec5225b | 7748 | if (!elfNN_aarch64_output_stub_sym |
a06ea964 NC |
7749 | (osi, stub_name, addr, sizeof (aarch64_long_branch_stub))) |
7750 | return FALSE; | |
cec5225b | 7751 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 | 7752 | return FALSE; |
cec5225b | 7753 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16)) |
a06ea964 NC |
7754 | return FALSE; |
7755 | break; | |
68fcca92 JW |
7756 | case aarch64_stub_erratum_835769_veneer: |
7757 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
7758 | sizeof (aarch64_erratum_835769_stub))) | |
7759 | return FALSE; | |
7760 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
7761 | return FALSE; | |
7762 | break; | |
4106101c MS |
7763 | case aarch64_stub_erratum_843419_veneer: |
7764 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
7765 | sizeof (aarch64_erratum_843419_stub))) | |
7766 | return FALSE; | |
7767 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
7768 | return FALSE; | |
7769 | break; | |
7770 | ||
a06ea964 | 7771 | default: |
8e2fe09f | 7772 | abort (); |
a06ea964 NC |
7773 | } |
7774 | ||
7775 | return TRUE; | |
7776 | } | |
7777 | ||
7778 | /* Output mapping symbols for linker generated sections. */ | |
7779 | ||
7780 | static bfd_boolean | |
cec5225b | 7781 | elfNN_aarch64_output_arch_local_syms (bfd *output_bfd, |
a06ea964 NC |
7782 | struct bfd_link_info *info, |
7783 | void *finfo, | |
7784 | int (*func) (void *, const char *, | |
7785 | Elf_Internal_Sym *, | |
7786 | asection *, | |
7787 | struct elf_link_hash_entry | |
7788 | *)) | |
7789 | { | |
7790 | output_arch_syminfo osi; | |
cec5225b | 7791 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 7792 | |
cec5225b | 7793 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7794 | |
7795 | osi.finfo = finfo; | |
7796 | osi.info = info; | |
7797 | osi.func = func; | |
7798 | ||
7799 | /* Long calls stubs. */ | |
7800 | if (htab->stub_bfd && htab->stub_bfd->sections) | |
7801 | { | |
7802 | asection *stub_sec; | |
7803 | ||
7804 | for (stub_sec = htab->stub_bfd->sections; | |
7805 | stub_sec != NULL; stub_sec = stub_sec->next) | |
7806 | { | |
7807 | /* Ignore non-stub sections. */ | |
7808 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
7809 | continue; | |
7810 | ||
7811 | osi.sec = stub_sec; | |
7812 | ||
7813 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
7814 | (output_bfd, osi.sec->output_section); | |
7815 | ||
61865519 MS |
7816 | /* The first instruction in a stub is always a branch. */ |
7817 | if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0)) | |
7818 | return FALSE; | |
7819 | ||
a06ea964 NC |
7820 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub, |
7821 | &osi); | |
7822 | } | |
7823 | } | |
7824 | ||
7825 | /* Finally, output mapping symbols for the PLT. */ | |
7826 | if (!htab->root.splt || htab->root.splt->size == 0) | |
7827 | return TRUE; | |
7828 | ||
a06ea964 NC |
7829 | osi.sec_shndx = _bfd_elf_section_from_bfd_section |
7830 | (output_bfd, htab->root.splt->output_section); | |
7831 | osi.sec = htab->root.splt; | |
7832 | ||
73524045 | 7833 | elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0); |
a06ea964 NC |
7834 | |
7835 | return TRUE; | |
7836 | ||
7837 | } | |
7838 | ||
7839 | /* Allocate target specific section data. */ | |
7840 | ||
7841 | static bfd_boolean | |
cec5225b | 7842 | elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec) |
a06ea964 NC |
7843 | { |
7844 | if (!sec->used_by_bfd) | |
7845 | { | |
7846 | _aarch64_elf_section_data *sdata; | |
7847 | bfd_size_type amt = sizeof (*sdata); | |
7848 | ||
7849 | sdata = bfd_zalloc (abfd, amt); | |
7850 | if (sdata == NULL) | |
7851 | return FALSE; | |
7852 | sec->used_by_bfd = sdata; | |
7853 | } | |
7854 | ||
7855 | record_section_with_aarch64_elf_section_data (sec); | |
7856 | ||
7857 | return _bfd_elf_new_section_hook (abfd, sec); | |
7858 | } | |
7859 | ||
7860 | ||
7861 | static void | |
7862 | unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
7863 | asection *sec, | |
7864 | void *ignore ATTRIBUTE_UNUSED) | |
7865 | { | |
7866 | unrecord_section_with_aarch64_elf_section_data (sec); | |
7867 | } | |
7868 | ||
7869 | static bfd_boolean | |
cec5225b | 7870 | elfNN_aarch64_close_and_cleanup (bfd *abfd) |
a06ea964 NC |
7871 | { |
7872 | if (abfd->sections) | |
7873 | bfd_map_over_sections (abfd, | |
7874 | unrecord_section_via_map_over_sections, NULL); | |
7875 | ||
7876 | return _bfd_elf_close_and_cleanup (abfd); | |
7877 | } | |
7878 | ||
7879 | static bfd_boolean | |
cec5225b | 7880 | elfNN_aarch64_bfd_free_cached_info (bfd *abfd) |
a06ea964 NC |
7881 | { |
7882 | if (abfd->sections) | |
7883 | bfd_map_over_sections (abfd, | |
7884 | unrecord_section_via_map_over_sections, NULL); | |
7885 | ||
7886 | return _bfd_free_cached_info (abfd); | |
7887 | } | |
7888 | ||
a06ea964 NC |
7889 | /* Create dynamic sections. This is different from the ARM backend in that |
7890 | the got, plt, gotplt and their relocation sections are all created in the | |
7891 | standard part of the bfd elf backend. */ | |
7892 | ||
7893 | static bfd_boolean | |
cec5225b | 7894 | elfNN_aarch64_create_dynamic_sections (bfd *dynobj, |
a06ea964 NC |
7895 | struct bfd_link_info *info) |
7896 | { | |
cec5225b | 7897 | struct elf_aarch64_link_hash_table *htab; |
cc0efaa8 MS |
7898 | |
7899 | /* We need to create .got section. */ | |
7900 | if (!aarch64_elf_create_got_section (dynobj, info)) | |
7901 | return FALSE; | |
a06ea964 NC |
7902 | |
7903 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
7904 | return FALSE; | |
7905 | ||
cec5225b | 7906 | htab = elf_aarch64_hash_table (info); |
a06ea964 | 7907 | htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss"); |
0e1862bb | 7908 | if (!bfd_link_pic (info)) |
a06ea964 NC |
7909 | htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss"); |
7910 | ||
0e1862bb | 7911 | if (!htab->sdynbss || (!bfd_link_pic (info) && !htab->srelbss)) |
a06ea964 NC |
7912 | abort (); |
7913 | ||
a06ea964 NC |
7914 | return TRUE; |
7915 | } | |
7916 | ||
7917 | ||
7918 | /* Allocate space in .plt, .got and associated reloc sections for | |
7919 | dynamic relocs. */ | |
7920 | ||
7921 | static bfd_boolean | |
cec5225b | 7922 | elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
a06ea964 NC |
7923 | { |
7924 | struct bfd_link_info *info; | |
cec5225b YZ |
7925 | struct elf_aarch64_link_hash_table *htab; |
7926 | struct elf_aarch64_link_hash_entry *eh; | |
a06ea964 NC |
7927 | struct elf_dyn_relocs *p; |
7928 | ||
7929 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
7930 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
7931 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
7932 | ||
7933 | There is no need to process bfd_link_hash_indirect symbols here | |
7934 | because we will also be presented with the concrete instance of | |
cec5225b | 7935 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been |
a06ea964 NC |
7936 | called to copy all relevant data from the generic to the concrete |
7937 | symbol instance. | |
7938 | */ | |
7939 | if (h->root.type == bfd_link_hash_indirect) | |
7940 | return TRUE; | |
7941 | ||
7942 | if (h->root.type == bfd_link_hash_warning) | |
7943 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7944 | ||
7945 | info = (struct bfd_link_info *) inf; | |
cec5225b | 7946 | htab = elf_aarch64_hash_table (info); |
a06ea964 | 7947 | |
1419bbe5 WN |
7948 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
7949 | here if it is defined and referenced in a non-shared object. */ | |
7950 | if (h->type == STT_GNU_IFUNC | |
7951 | && h->def_regular) | |
7952 | return TRUE; | |
7953 | else if (htab->root.dynamic_sections_created && h->plt.refcount > 0) | |
a06ea964 NC |
7954 | { |
7955 | /* Make sure this symbol is output as a dynamic symbol. | |
7956 | Undefined weak syms won't yet be marked as dynamic. */ | |
7957 | if (h->dynindx == -1 && !h->forced_local) | |
7958 | { | |
7959 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
7960 | return FALSE; | |
7961 | } | |
7962 | ||
0e1862bb | 7963 | if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
a06ea964 NC |
7964 | { |
7965 | asection *s = htab->root.splt; | |
7966 | ||
7967 | /* If this is the first .plt entry, make room for the special | |
7968 | first entry. */ | |
7969 | if (s->size == 0) | |
7970 | s->size += htab->plt_header_size; | |
7971 | ||
7972 | h->plt.offset = s->size; | |
7973 | ||
7974 | /* If this symbol is not defined in a regular file, and we are | |
7975 | not generating a shared library, then set the symbol to this | |
7976 | location in the .plt. This is required to make function | |
7977 | pointers compare as equal between the normal executable and | |
7978 | the shared library. */ | |
0e1862bb | 7979 | if (!bfd_link_pic (info) && !h->def_regular) |
a06ea964 NC |
7980 | { |
7981 | h->root.u.def.section = s; | |
7982 | h->root.u.def.value = h->plt.offset; | |
7983 | } | |
7984 | ||
7985 | /* Make room for this entry. For now we only create the | |
7986 | small model PLT entries. We later need to find a way | |
7987 | of relaxing into these from the large model PLT entries. */ | |
7988 | s->size += PLT_SMALL_ENTRY_SIZE; | |
7989 | ||
7990 | /* We also need to make an entry in the .got.plt section, which | |
7991 | will be placed in the .got section by the linker script. */ | |
7992 | htab->root.sgotplt->size += GOT_ENTRY_SIZE; | |
7993 | ||
7994 | /* We also need to make an entry in the .rela.plt section. */ | |
7995 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
7996 | ||
7997 | /* We need to ensure that all GOT entries that serve the PLT | |
7998 | are consecutive with the special GOT slots [0] [1] and | |
7999 | [2]. Any addtional relocations, such as | |
8000 | R_AARCH64_TLSDESC, must be placed after the PLT related | |
8001 | entries. We abuse the reloc_count such that during | |
8002 | sizing we adjust reloc_count to indicate the number of | |
8003 | PLT related reserved entries. In subsequent phases when | |
8004 | filling in the contents of the reloc entries, PLT related | |
8005 | entries are placed by computing their PLT index (0 | |
8006 | .. reloc_count). While other none PLT relocs are placed | |
8007 | at the slot indicated by reloc_count and reloc_count is | |
8008 | updated. */ | |
8009 | ||
8010 | htab->root.srelplt->reloc_count++; | |
8011 | } | |
8012 | else | |
8013 | { | |
8014 | h->plt.offset = (bfd_vma) - 1; | |
8015 | h->needs_plt = 0; | |
8016 | } | |
8017 | } | |
8018 | else | |
8019 | { | |
8020 | h->plt.offset = (bfd_vma) - 1; | |
8021 | h->needs_plt = 0; | |
8022 | } | |
8023 | ||
cec5225b | 8024 | eh = (struct elf_aarch64_link_hash_entry *) h; |
a06ea964 NC |
8025 | eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; |
8026 | ||
8027 | if (h->got.refcount > 0) | |
8028 | { | |
8029 | bfd_boolean dyn; | |
cec5225b | 8030 | unsigned got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
8031 | |
8032 | h->got.offset = (bfd_vma) - 1; | |
8033 | ||
8034 | dyn = htab->root.dynamic_sections_created; | |
8035 | ||
8036 | /* Make sure this symbol is output as a dynamic symbol. | |
8037 | Undefined weak syms won't yet be marked as dynamic. */ | |
8038 | if (dyn && h->dynindx == -1 && !h->forced_local) | |
8039 | { | |
8040 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
8041 | return FALSE; | |
8042 | } | |
8043 | ||
8044 | if (got_type == GOT_UNKNOWN) | |
8045 | { | |
8046 | } | |
8047 | else if (got_type == GOT_NORMAL) | |
8048 | { | |
8049 | h->got.offset = htab->root.sgot->size; | |
8050 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8051 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8052 | || h->root.type != bfd_link_hash_undefweak) | |
0e1862bb | 8053 | && (bfd_link_pic (info) |
a06ea964 NC |
8054 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) |
8055 | { | |
8056 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
8057 | } | |
8058 | } | |
8059 | else | |
8060 | { | |
8061 | int indx; | |
8062 | if (got_type & GOT_TLSDESC_GD) | |
8063 | { | |
8064 | eh->tlsdesc_got_jump_table_offset = | |
8065 | (htab->root.sgotplt->size | |
8066 | - aarch64_compute_jump_table_size (htab)); | |
8067 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
8068 | h->got.offset = (bfd_vma) - 2; | |
8069 | } | |
8070 | ||
8071 | if (got_type & GOT_TLS_GD) | |
8072 | { | |
8073 | h->got.offset = htab->root.sgot->size; | |
8074 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
8075 | } | |
8076 | ||
8077 | if (got_type & GOT_TLS_IE) | |
8078 | { | |
8079 | h->got.offset = htab->root.sgot->size; | |
8080 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8081 | } | |
8082 | ||
8083 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
8084 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8085 | || h->root.type != bfd_link_hash_undefweak) | |
0e1862bb | 8086 | && (bfd_link_pic (info) |
a06ea964 NC |
8087 | || indx != 0 |
8088 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
8089 | { | |
8090 | if (got_type & GOT_TLSDESC_GD) | |
8091 | { | |
8092 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8093 | /* Note reloc_count not incremented here! We have | |
8094 | already adjusted reloc_count for this relocation | |
8095 | type. */ | |
8096 | ||
8097 | /* TLSDESC PLT is now needed, but not yet determined. */ | |
8098 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
8099 | } | |
8100 | ||
8101 | if (got_type & GOT_TLS_GD) | |
8102 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
8103 | ||
8104 | if (got_type & GOT_TLS_IE) | |
8105 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
8106 | } | |
8107 | } | |
8108 | } | |
8109 | else | |
8110 | { | |
8111 | h->got.offset = (bfd_vma) - 1; | |
8112 | } | |
8113 | ||
8114 | if (eh->dyn_relocs == NULL) | |
8115 | return TRUE; | |
8116 | ||
8117 | /* In the shared -Bsymbolic case, discard space allocated for | |
8118 | dynamic pc-relative relocs against symbols which turn out to be | |
8119 | defined in regular objects. For the normal shared case, discard | |
8120 | space for pc-relative relocs that have become local due to symbol | |
8121 | visibility changes. */ | |
8122 | ||
0e1862bb | 8123 | if (bfd_link_pic (info)) |
a06ea964 NC |
8124 | { |
8125 | /* Relocs that use pc_count are those that appear on a call | |
8126 | insn, or certain REL relocs that can generated via assembly. | |
8127 | We want calls to protected symbols to resolve directly to the | |
8128 | function rather than going via the plt. If people want | |
8129 | function pointer comparisons to work as expected then they | |
8130 | should avoid writing weird assembly. */ | |
8131 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
8132 | { | |
8133 | struct elf_dyn_relocs **pp; | |
8134 | ||
8135 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) | |
8136 | { | |
8137 | p->count -= p->pc_count; | |
8138 | p->pc_count = 0; | |
8139 | if (p->count == 0) | |
8140 | *pp = p->next; | |
8141 | else | |
8142 | pp = &p->next; | |
8143 | } | |
8144 | } | |
8145 | ||
8146 | /* Also discard relocs on undefined weak syms with non-default | |
8147 | visibility. */ | |
8148 | if (eh->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak) | |
8149 | { | |
8150 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
8151 | eh->dyn_relocs = NULL; | |
8152 | ||
8153 | /* Make sure undefined weak symbols are output as a dynamic | |
8154 | symbol in PIEs. */ | |
8155 | else if (h->dynindx == -1 | |
8156 | && !h->forced_local | |
8157 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
8158 | return FALSE; | |
8159 | } | |
8160 | ||
8161 | } | |
8162 | else if (ELIMINATE_COPY_RELOCS) | |
8163 | { | |
8164 | /* For the non-shared case, discard space for relocs against | |
8165 | symbols which turn out to need copy relocs or are not | |
8166 | dynamic. */ | |
8167 | ||
8168 | if (!h->non_got_ref | |
8169 | && ((h->def_dynamic | |
8170 | && !h->def_regular) | |
8171 | || (htab->root.dynamic_sections_created | |
8172 | && (h->root.type == bfd_link_hash_undefweak | |
8173 | || h->root.type == bfd_link_hash_undefined)))) | |
8174 | { | |
8175 | /* Make sure this symbol is output as a dynamic symbol. | |
8176 | Undefined weak syms won't yet be marked as dynamic. */ | |
8177 | if (h->dynindx == -1 | |
8178 | && !h->forced_local | |
8179 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
8180 | return FALSE; | |
8181 | ||
8182 | /* If that succeeded, we know we'll be keeping all the | |
8183 | relocs. */ | |
8184 | if (h->dynindx != -1) | |
8185 | goto keep; | |
8186 | } | |
8187 | ||
8188 | eh->dyn_relocs = NULL; | |
8189 | ||
8190 | keep:; | |
8191 | } | |
8192 | ||
8193 | /* Finally, allocate space. */ | |
8194 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
8195 | { | |
8196 | asection *sreloc; | |
8197 | ||
8198 | sreloc = elf_section_data (p->sec)->sreloc; | |
8199 | ||
8200 | BFD_ASSERT (sreloc != NULL); | |
8201 | ||
8202 | sreloc->size += p->count * RELOC_SIZE (htab); | |
8203 | } | |
8204 | ||
8205 | return TRUE; | |
8206 | } | |
8207 | ||
1419bbe5 WN |
8208 | /* Allocate space in .plt, .got and associated reloc sections for |
8209 | ifunc dynamic relocs. */ | |
8210 | ||
8211 | static bfd_boolean | |
8212 | elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h, | |
8213 | void *inf) | |
8214 | { | |
8215 | struct bfd_link_info *info; | |
8216 | struct elf_aarch64_link_hash_table *htab; | |
8217 | struct elf_aarch64_link_hash_entry *eh; | |
8218 | ||
8219 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
8220 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
8221 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
8222 | ||
8223 | There is no need to process bfd_link_hash_indirect symbols here | |
8224 | because we will also be presented with the concrete instance of | |
8225 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been | |
8226 | called to copy all relevant data from the generic to the concrete | |
8227 | symbol instance. | |
8228 | */ | |
8229 | if (h->root.type == bfd_link_hash_indirect) | |
8230 | return TRUE; | |
8231 | ||
8232 | if (h->root.type == bfd_link_hash_warning) | |
8233 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8234 | ||
8235 | info = (struct bfd_link_info *) inf; | |
8236 | htab = elf_aarch64_hash_table (info); | |
8237 | ||
8238 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
8239 | ||
8240 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it | |
8241 | here if it is defined and referenced in a non-shared object. */ | |
8242 | if (h->type == STT_GNU_IFUNC | |
8243 | && h->def_regular) | |
8244 | return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, | |
8245 | &eh->dyn_relocs, | |
2df3368d | 8246 | NULL, |
1419bbe5 WN |
8247 | htab->plt_entry_size, |
8248 | htab->plt_header_size, | |
8249 | GOT_ENTRY_SIZE); | |
8250 | return TRUE; | |
8251 | } | |
8252 | ||
8253 | /* Allocate space in .plt, .got and associated reloc sections for | |
8254 | local dynamic relocs. */ | |
8255 | ||
8256 | static bfd_boolean | |
8257 | elfNN_aarch64_allocate_local_dynrelocs (void **slot, void *inf) | |
8258 | { | |
8259 | struct elf_link_hash_entry *h | |
8260 | = (struct elf_link_hash_entry *) *slot; | |
8261 | ||
8262 | if (h->type != STT_GNU_IFUNC | |
8263 | || !h->def_regular | |
8264 | || !h->ref_regular | |
8265 | || !h->forced_local | |
8266 | || h->root.type != bfd_link_hash_defined) | |
8267 | abort (); | |
8268 | ||
8269 | return elfNN_aarch64_allocate_dynrelocs (h, inf); | |
8270 | } | |
8271 | ||
8272 | /* Allocate space in .plt, .got and associated reloc sections for | |
8273 | local ifunc dynamic relocs. */ | |
8274 | ||
8275 | static bfd_boolean | |
8276 | elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf) | |
8277 | { | |
8278 | struct elf_link_hash_entry *h | |
8279 | = (struct elf_link_hash_entry *) *slot; | |
8280 | ||
8281 | if (h->type != STT_GNU_IFUNC | |
8282 | || !h->def_regular | |
8283 | || !h->ref_regular | |
8284 | || !h->forced_local | |
8285 | || h->root.type != bfd_link_hash_defined) | |
8286 | abort (); | |
8287 | ||
8288 | return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf); | |
8289 | } | |
a06ea964 | 8290 | |
c2170589 JW |
8291 | /* Find any dynamic relocs that apply to read-only sections. */ |
8292 | ||
8293 | static bfd_boolean | |
8294 | aarch64_readonly_dynrelocs (struct elf_link_hash_entry * h, void * inf) | |
8295 | { | |
8296 | struct elf_aarch64_link_hash_entry * eh; | |
8297 | struct elf_dyn_relocs * p; | |
8298 | ||
8299 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
8300 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
8301 | { | |
8302 | asection *s = p->sec; | |
8303 | ||
8304 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
8305 | { | |
8306 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
8307 | ||
8308 | info->flags |= DF_TEXTREL; | |
8309 | ||
8310 | /* Not an error, just cut short the traversal. */ | |
8311 | return FALSE; | |
8312 | } | |
8313 | } | |
8314 | return TRUE; | |
8315 | } | |
8316 | ||
a06ea964 NC |
8317 | /* This is the most important function of all . Innocuosly named |
8318 | though ! */ | |
8319 | static bfd_boolean | |
cec5225b | 8320 | elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
8321 | struct bfd_link_info *info) |
8322 | { | |
cec5225b | 8323 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
8324 | bfd *dynobj; |
8325 | asection *s; | |
8326 | bfd_boolean relocs; | |
8327 | bfd *ibfd; | |
8328 | ||
cec5225b | 8329 | htab = elf_aarch64_hash_table ((info)); |
a06ea964 NC |
8330 | dynobj = htab->root.dynobj; |
8331 | ||
8332 | BFD_ASSERT (dynobj != NULL); | |
8333 | ||
8334 | if (htab->root.dynamic_sections_created) | |
8335 | { | |
9b8b325a | 8336 | if (bfd_link_executable (info) && !info->nointerp) |
a06ea964 NC |
8337 | { |
8338 | s = bfd_get_linker_section (dynobj, ".interp"); | |
8339 | if (s == NULL) | |
8340 | abort (); | |
8341 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
8342 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
8343 | } | |
8344 | } | |
8345 | ||
8346 | /* Set up .got offsets for local syms, and space for local dynamic | |
8347 | relocs. */ | |
c72f2fb2 | 8348 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
a06ea964 NC |
8349 | { |
8350 | struct elf_aarch64_local_symbol *locals = NULL; | |
8351 | Elf_Internal_Shdr *symtab_hdr; | |
8352 | asection *srel; | |
8353 | unsigned int i; | |
8354 | ||
8355 | if (!is_aarch64_elf (ibfd)) | |
8356 | continue; | |
8357 | ||
8358 | for (s = ibfd->sections; s != NULL; s = s->next) | |
8359 | { | |
8360 | struct elf_dyn_relocs *p; | |
8361 | ||
8362 | for (p = (struct elf_dyn_relocs *) | |
8363 | (elf_section_data (s)->local_dynrel); p != NULL; p = p->next) | |
8364 | { | |
8365 | if (!bfd_is_abs_section (p->sec) | |
8366 | && bfd_is_abs_section (p->sec->output_section)) | |
8367 | { | |
8368 | /* Input section has been discarded, either because | |
8369 | it is a copy of a linkonce section or due to | |
8370 | linker script /DISCARD/, so we'll be discarding | |
8371 | the relocs too. */ | |
8372 | } | |
8373 | else if (p->count != 0) | |
8374 | { | |
8375 | srel = elf_section_data (p->sec)->sreloc; | |
8376 | srel->size += p->count * RELOC_SIZE (htab); | |
8377 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
8378 | info->flags |= DF_TEXTREL; | |
8379 | } | |
8380 | } | |
8381 | } | |
8382 | ||
cec5225b | 8383 | locals = elf_aarch64_locals (ibfd); |
a06ea964 NC |
8384 | if (!locals) |
8385 | continue; | |
8386 | ||
8387 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
8388 | srel = htab->root.srelgot; | |
8389 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
8390 | { | |
8391 | locals[i].got_offset = (bfd_vma) - 1; | |
8392 | locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
8393 | if (locals[i].got_refcount > 0) | |
8394 | { | |
8395 | unsigned got_type = locals[i].got_type; | |
8396 | if (got_type & GOT_TLSDESC_GD) | |
8397 | { | |
8398 | locals[i].tlsdesc_got_jump_table_offset = | |
8399 | (htab->root.sgotplt->size | |
8400 | - aarch64_compute_jump_table_size (htab)); | |
8401 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
8402 | locals[i].got_offset = (bfd_vma) - 2; | |
8403 | } | |
8404 | ||
8405 | if (got_type & GOT_TLS_GD) | |
8406 | { | |
8407 | locals[i].got_offset = htab->root.sgot->size; | |
8408 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
8409 | } | |
8410 | ||
b53b1bed JW |
8411 | if (got_type & GOT_TLS_IE |
8412 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
8413 | { |
8414 | locals[i].got_offset = htab->root.sgot->size; | |
8415 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8416 | } | |
8417 | ||
8418 | if (got_type == GOT_UNKNOWN) | |
8419 | { | |
8420 | } | |
8421 | ||
0e1862bb | 8422 | if (bfd_link_pic (info)) |
a06ea964 NC |
8423 | { |
8424 | if (got_type & GOT_TLSDESC_GD) | |
8425 | { | |
8426 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8427 | /* Note RELOC_COUNT not incremented here! */ | |
8428 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
8429 | } | |
8430 | ||
8431 | if (got_type & GOT_TLS_GD) | |
8432 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
8433 | ||
b53b1bed JW |
8434 | if (got_type & GOT_TLS_IE |
8435 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
8436 | htab->root.srelgot->size += RELOC_SIZE (htab); |
8437 | } | |
8438 | } | |
8439 | else | |
8440 | { | |
8441 | locals[i].got_refcount = (bfd_vma) - 1; | |
8442 | } | |
8443 | } | |
8444 | } | |
8445 | ||
8446 | ||
8447 | /* Allocate global sym .plt and .got entries, and space for global | |
8448 | sym dynamic relocs. */ | |
cec5225b | 8449 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs, |
a06ea964 NC |
8450 | info); |
8451 | ||
1419bbe5 WN |
8452 | /* Allocate global ifunc sym .plt and .got entries, and space for global |
8453 | ifunc sym dynamic relocs. */ | |
8454 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs, | |
8455 | info); | |
8456 | ||
8457 | /* Allocate .plt and .got entries, and space for local symbols. */ | |
8458 | htab_traverse (htab->loc_hash_table, | |
8459 | elfNN_aarch64_allocate_local_dynrelocs, | |
8460 | info); | |
8461 | ||
8462 | /* Allocate .plt and .got entries, and space for local ifunc symbols. */ | |
8463 | htab_traverse (htab->loc_hash_table, | |
8464 | elfNN_aarch64_allocate_local_ifunc_dynrelocs, | |
8465 | info); | |
a06ea964 NC |
8466 | |
8467 | /* For every jump slot reserved in the sgotplt, reloc_count is | |
8468 | incremented. However, when we reserve space for TLS descriptors, | |
8469 | it's not incremented, so in order to compute the space reserved | |
8470 | for them, it suffices to multiply the reloc count by the jump | |
8471 | slot size. */ | |
8472 | ||
8473 | if (htab->root.srelplt) | |
8847944f | 8474 | htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab); |
a06ea964 NC |
8475 | |
8476 | if (htab->tlsdesc_plt) | |
8477 | { | |
8478 | if (htab->root.splt->size == 0) | |
8479 | htab->root.splt->size += PLT_ENTRY_SIZE; | |
8480 | ||
8481 | htab->tlsdesc_plt = htab->root.splt->size; | |
8482 | htab->root.splt->size += PLT_TLSDESC_ENTRY_SIZE; | |
8483 | ||
8484 | /* If we're not using lazy TLS relocations, don't generate the | |
8485 | GOT entry required. */ | |
8486 | if (!(info->flags & DF_BIND_NOW)) | |
8487 | { | |
8488 | htab->dt_tlsdesc_got = htab->root.sgot->size; | |
8489 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8490 | } | |
8491 | } | |
8492 | ||
68fcca92 | 8493 | /* Init mapping symbols information to use later to distingush between |
4106101c MS |
8494 | code and data while scanning for errata. */ |
8495 | if (htab->fix_erratum_835769 || htab->fix_erratum_843419) | |
68fcca92 JW |
8496 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
8497 | { | |
8498 | if (!is_aarch64_elf (ibfd)) | |
8499 | continue; | |
8500 | bfd_elfNN_aarch64_init_maps (ibfd); | |
8501 | } | |
8502 | ||
a06ea964 NC |
8503 | /* We now have determined the sizes of the various dynamic sections. |
8504 | Allocate memory for them. */ | |
8505 | relocs = FALSE; | |
8506 | for (s = dynobj->sections; s != NULL; s = s->next) | |
8507 | { | |
8508 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
8509 | continue; | |
8510 | ||
8511 | if (s == htab->root.splt | |
8512 | || s == htab->root.sgot | |
8513 | || s == htab->root.sgotplt | |
8514 | || s == htab->root.iplt | |
8515 | || s == htab->root.igotplt || s == htab->sdynbss) | |
8516 | { | |
8517 | /* Strip this section if we don't need it; see the | |
8518 | comment below. */ | |
8519 | } | |
8520 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) | |
8521 | { | |
8522 | if (s->size != 0 && s != htab->root.srelplt) | |
8523 | relocs = TRUE; | |
8524 | ||
8525 | /* We use the reloc_count field as a counter if we need | |
8526 | to copy relocs into the output file. */ | |
8527 | if (s != htab->root.srelplt) | |
8528 | s->reloc_count = 0; | |
8529 | } | |
8530 | else | |
8531 | { | |
8532 | /* It's not one of our sections, so don't allocate space. */ | |
8533 | continue; | |
8534 | } | |
8535 | ||
8536 | if (s->size == 0) | |
8537 | { | |
8538 | /* If we don't need this section, strip it from the | |
8539 | output file. This is mostly to handle .rela.bss and | |
8540 | .rela.plt. We must create both sections in | |
8541 | create_dynamic_sections, because they must be created | |
8542 | before the linker maps input sections to output | |
8543 | sections. The linker does that before | |
8544 | adjust_dynamic_symbol is called, and it is that | |
8545 | function which decides whether anything needs to go | |
8546 | into these sections. */ | |
8547 | ||
8548 | s->flags |= SEC_EXCLUDE; | |
8549 | continue; | |
8550 | } | |
8551 | ||
8552 | if ((s->flags & SEC_HAS_CONTENTS) == 0) | |
8553 | continue; | |
8554 | ||
8555 | /* Allocate memory for the section contents. We use bfd_zalloc | |
8556 | here in case unused entries are not reclaimed before the | |
8557 | section's contents are written out. This should not happen, | |
8558 | but this way if it does, we get a R_AARCH64_NONE reloc instead | |
8559 | of garbage. */ | |
8560 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
8561 | if (s->contents == NULL) | |
8562 | return FALSE; | |
8563 | } | |
8564 | ||
8565 | if (htab->root.dynamic_sections_created) | |
8566 | { | |
8567 | /* Add some entries to the .dynamic section. We fill in the | |
cec5225b | 8568 | values later, in elfNN_aarch64_finish_dynamic_sections, but we |
a06ea964 NC |
8569 | must add the entries now so that we get the correct size for |
8570 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
8571 | dynamic linker and used by the debugger. */ | |
8572 | #define add_dynamic_entry(TAG, VAL) \ | |
8573 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
8574 | ||
0e1862bb | 8575 | if (bfd_link_executable (info)) |
a06ea964 NC |
8576 | { |
8577 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
8578 | return FALSE; | |
8579 | } | |
8580 | ||
8581 | if (htab->root.splt->size != 0) | |
8582 | { | |
8583 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
8584 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
8585 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
8586 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
8587 | return FALSE; | |
8588 | ||
8589 | if (htab->tlsdesc_plt | |
8590 | && (!add_dynamic_entry (DT_TLSDESC_PLT, 0) | |
8591 | || !add_dynamic_entry (DT_TLSDESC_GOT, 0))) | |
8592 | return FALSE; | |
8593 | } | |
8594 | ||
8595 | if (relocs) | |
8596 | { | |
8597 | if (!add_dynamic_entry (DT_RELA, 0) | |
8598 | || !add_dynamic_entry (DT_RELASZ, 0) | |
8599 | || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) | |
8600 | return FALSE; | |
8601 | ||
8602 | /* If any dynamic relocs apply to a read-only section, | |
8603 | then we need a DT_TEXTREL entry. */ | |
c2170589 JW |
8604 | if ((info->flags & DF_TEXTREL) == 0) |
8605 | elf_link_hash_traverse (& htab->root, aarch64_readonly_dynrelocs, | |
8606 | info); | |
8607 | ||
a06ea964 NC |
8608 | if ((info->flags & DF_TEXTREL) != 0) |
8609 | { | |
8610 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
8611 | return FALSE; | |
8612 | } | |
8613 | } | |
8614 | } | |
8615 | #undef add_dynamic_entry | |
8616 | ||
8617 | return TRUE; | |
a06ea964 NC |
8618 | } |
8619 | ||
8620 | static inline void | |
caed7120 YZ |
8621 | elf_aarch64_update_plt_entry (bfd *output_bfd, |
8622 | bfd_reloc_code_real_type r_type, | |
8623 | bfd_byte *plt_entry, bfd_vma value) | |
a06ea964 | 8624 | { |
caed7120 YZ |
8625 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type); |
8626 | ||
8627 | _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value); | |
a06ea964 NC |
8628 | } |
8629 | ||
8630 | static void | |
cec5225b YZ |
8631 | elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h, |
8632 | struct elf_aarch64_link_hash_table | |
1419bbe5 WN |
8633 | *htab, bfd *output_bfd, |
8634 | struct bfd_link_info *info) | |
a06ea964 NC |
8635 | { |
8636 | bfd_byte *plt_entry; | |
8637 | bfd_vma plt_index; | |
8638 | bfd_vma got_offset; | |
8639 | bfd_vma gotplt_entry_address; | |
8640 | bfd_vma plt_entry_address; | |
8641 | Elf_Internal_Rela rela; | |
8642 | bfd_byte *loc; | |
1419bbe5 WN |
8643 | asection *plt, *gotplt, *relplt; |
8644 | ||
8645 | /* When building a static executable, use .iplt, .igot.plt and | |
8646 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
8647 | if (htab->root.splt != NULL) | |
8648 | { | |
8649 | plt = htab->root.splt; | |
8650 | gotplt = htab->root.sgotplt; | |
8651 | relplt = htab->root.srelplt; | |
8652 | } | |
8653 | else | |
8654 | { | |
8655 | plt = htab->root.iplt; | |
8656 | gotplt = htab->root.igotplt; | |
8657 | relplt = htab->root.irelplt; | |
8658 | } | |
8659 | ||
8660 | /* Get the index in the procedure linkage table which | |
8661 | corresponds to this symbol. This is the index of this symbol | |
8662 | in all the symbols for which we are making plt entries. The | |
8663 | first entry in the procedure linkage table is reserved. | |
a06ea964 | 8664 | |
1419bbe5 WN |
8665 | Get the offset into the .got table of the entry that |
8666 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE | |
8667 | bytes. The first three are reserved for the dynamic linker. | |
692e2b8b | 8668 | |
1419bbe5 WN |
8669 | For static executables, we don't reserve anything. */ |
8670 | ||
8671 | if (plt == htab->root.splt) | |
8672 | { | |
8673 | plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size; | |
8674 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
8675 | } | |
8676 | else | |
8677 | { | |
8678 | plt_index = h->plt.offset / htab->plt_entry_size; | |
8679 | got_offset = plt_index * GOT_ENTRY_SIZE; | |
8680 | } | |
8681 | ||
8682 | plt_entry = plt->contents + h->plt.offset; | |
8683 | plt_entry_address = plt->output_section->vma | |
f44a1f8e | 8684 | + plt->output_offset + h->plt.offset; |
1419bbe5 WN |
8685 | gotplt_entry_address = gotplt->output_section->vma + |
8686 | gotplt->output_offset + got_offset; | |
a06ea964 NC |
8687 | |
8688 | /* Copy in the boiler-plate for the PLTn entry. */ | |
cec5225b | 8689 | memcpy (plt_entry, elfNN_aarch64_small_plt_entry, PLT_SMALL_ENTRY_SIZE); |
a06ea964 NC |
8690 | |
8691 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
8692 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 YZ |
8693 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
8694 | plt_entry, | |
8695 | PG (gotplt_entry_address) - | |
8696 | PG (plt_entry_address)); | |
a06ea964 NC |
8697 | |
8698 | /* Fill in the lo12 bits for the load from the pltgot. */ | |
caed7120 YZ |
8699 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
8700 | plt_entry + 4, | |
8701 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 | 8702 | |
9aff4b7a | 8703 | /* Fill in the lo12 bits for the add from the pltgot entry. */ |
caed7120 YZ |
8704 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
8705 | plt_entry + 8, | |
8706 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 NC |
8707 | |
8708 | /* All the GOTPLT Entries are essentially initialized to PLT0. */ | |
cec5225b | 8709 | bfd_put_NN (output_bfd, |
1419bbe5 WN |
8710 | plt->output_section->vma + plt->output_offset, |
8711 | gotplt->contents + got_offset); | |
a06ea964 | 8712 | |
a06ea964 | 8713 | rela.r_offset = gotplt_entry_address; |
1419bbe5 WN |
8714 | |
8715 | if (h->dynindx == -1 | |
0e1862bb | 8716 | || ((bfd_link_executable (info) |
1419bbe5 WN |
8717 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
8718 | && h->def_regular | |
8719 | && h->type == STT_GNU_IFUNC)) | |
8720 | { | |
8721 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
8722 | R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */ | |
8723 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
8724 | rela.r_addend = (h->root.u.def.value | |
8725 | + h->root.u.def.section->output_section->vma | |
8726 | + h->root.u.def.section->output_offset); | |
8727 | } | |
8728 | else | |
8729 | { | |
8730 | /* Fill in the entry in the .rela.plt section. */ | |
8731 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT)); | |
8732 | rela.r_addend = 0; | |
8733 | } | |
a06ea964 NC |
8734 | |
8735 | /* Compute the relocation entry to used based on PLT index and do | |
8736 | not adjust reloc_count. The reloc_count has already been adjusted | |
8737 | to account for this entry. */ | |
1419bbe5 | 8738 | loc = relplt->contents + plt_index * RELOC_SIZE (htab); |
cec5225b | 8739 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
8740 | } |
8741 | ||
8742 | /* Size sections even though they're not dynamic. We use it to setup | |
8743 | _TLS_MODULE_BASE_, if needed. */ | |
8744 | ||
8745 | static bfd_boolean | |
cec5225b | 8746 | elfNN_aarch64_always_size_sections (bfd *output_bfd, |
a06ea964 NC |
8747 | struct bfd_link_info *info) |
8748 | { | |
8749 | asection *tls_sec; | |
8750 | ||
0e1862bb | 8751 | if (bfd_link_relocatable (info)) |
a06ea964 NC |
8752 | return TRUE; |
8753 | ||
8754 | tls_sec = elf_hash_table (info)->tls_sec; | |
8755 | ||
8756 | if (tls_sec) | |
8757 | { | |
8758 | struct elf_link_hash_entry *tlsbase; | |
8759 | ||
8760 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
8761 | "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE); | |
8762 | ||
8763 | if (tlsbase) | |
8764 | { | |
8765 | struct bfd_link_hash_entry *h = NULL; | |
8766 | const struct elf_backend_data *bed = | |
8767 | get_elf_backend_data (output_bfd); | |
8768 | ||
8769 | if (!(_bfd_generic_link_add_one_symbol | |
8770 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
8771 | tls_sec, 0, NULL, FALSE, bed->collect, &h))) | |
8772 | return FALSE; | |
8773 | ||
8774 | tlsbase->type = STT_TLS; | |
8775 | tlsbase = (struct elf_link_hash_entry *) h; | |
8776 | tlsbase->def_regular = 1; | |
8777 | tlsbase->other = STV_HIDDEN; | |
8778 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
8779 | } | |
8780 | } | |
8781 | ||
8782 | return TRUE; | |
8783 | } | |
8784 | ||
8785 | /* Finish up dynamic symbol handling. We set the contents of various | |
8786 | dynamic sections here. */ | |
8787 | static bfd_boolean | |
cec5225b | 8788 | elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd, |
a06ea964 NC |
8789 | struct bfd_link_info *info, |
8790 | struct elf_link_hash_entry *h, | |
8791 | Elf_Internal_Sym *sym) | |
8792 | { | |
cec5225b YZ |
8793 | struct elf_aarch64_link_hash_table *htab; |
8794 | htab = elf_aarch64_hash_table (info); | |
a06ea964 NC |
8795 | |
8796 | if (h->plt.offset != (bfd_vma) - 1) | |
8797 | { | |
1419bbe5 WN |
8798 | asection *plt, *gotplt, *relplt; |
8799 | ||
a06ea964 NC |
8800 | /* This symbol has an entry in the procedure linkage table. Set |
8801 | it up. */ | |
8802 | ||
1419bbe5 WN |
8803 | /* When building a static executable, use .iplt, .igot.plt and |
8804 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
8805 | if (htab->root.splt != NULL) | |
8806 | { | |
8807 | plt = htab->root.splt; | |
8808 | gotplt = htab->root.sgotplt; | |
8809 | relplt = htab->root.srelplt; | |
8810 | } | |
8811 | else | |
8812 | { | |
8813 | plt = htab->root.iplt; | |
8814 | gotplt = htab->root.igotplt; | |
8815 | relplt = htab->root.irelplt; | |
8816 | } | |
8817 | ||
8818 | /* This symbol has an entry in the procedure linkage table. Set | |
8819 | it up. */ | |
8820 | if ((h->dynindx == -1 | |
0e1862bb | 8821 | && !((h->forced_local || bfd_link_executable (info)) |
1419bbe5 WN |
8822 | && h->def_regular |
8823 | && h->type == STT_GNU_IFUNC)) | |
8824 | || plt == NULL | |
8825 | || gotplt == NULL | |
8826 | || relplt == NULL) | |
a06ea964 NC |
8827 | abort (); |
8828 | ||
1419bbe5 | 8829 | elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info); |
a06ea964 NC |
8830 | if (!h->def_regular) |
8831 | { | |
8832 | /* Mark the symbol as undefined, rather than as defined in | |
46b87d49 | 8833 | the .plt section. */ |
a06ea964 | 8834 | sym->st_shndx = SHN_UNDEF; |
46b87d49 WN |
8835 | /* If the symbol is weak we need to clear the value. |
8836 | Otherwise, the PLT entry would provide a definition for | |
8837 | the symbol even if the symbol wasn't defined anywhere, | |
8838 | and so the symbol would never be NULL. Leave the value if | |
8839 | there were any relocations where pointer equality matters | |
8840 | (this is a clue for the dynamic linker, to make function | |
8841 | pointer comparisons work between an application and shared | |
8842 | library). */ | |
8843 | if (!h->ref_regular_nonweak || !h->pointer_equality_needed) | |
8844 | sym->st_value = 0; | |
a06ea964 NC |
8845 | } |
8846 | } | |
8847 | ||
8848 | if (h->got.offset != (bfd_vma) - 1 | |
cec5225b | 8849 | && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL) |
a06ea964 NC |
8850 | { |
8851 | Elf_Internal_Rela rela; | |
8852 | bfd_byte *loc; | |
8853 | ||
8854 | /* This symbol has an entry in the global offset table. Set it | |
8855 | up. */ | |
8856 | if (htab->root.sgot == NULL || htab->root.srelgot == NULL) | |
8857 | abort (); | |
8858 | ||
8859 | rela.r_offset = (htab->root.sgot->output_section->vma | |
8860 | + htab->root.sgot->output_offset | |
8861 | + (h->got.offset & ~(bfd_vma) 1)); | |
8862 | ||
49206388 WN |
8863 | if (h->def_regular |
8864 | && h->type == STT_GNU_IFUNC) | |
8865 | { | |
0e1862bb | 8866 | if (bfd_link_pic (info)) |
49206388 WN |
8867 | { |
8868 | /* Generate R_AARCH64_GLOB_DAT. */ | |
8869 | goto do_glob_dat; | |
8870 | } | |
8871 | else | |
8872 | { | |
8873 | asection *plt; | |
8874 | ||
8875 | if (!h->pointer_equality_needed) | |
8876 | abort (); | |
8877 | ||
8878 | /* For non-shared object, we can't use .got.plt, which | |
8879 | contains the real function address if we need pointer | |
8880 | equality. We load the GOT entry with the PLT entry. */ | |
8881 | plt = htab->root.splt ? htab->root.splt : htab->root.iplt; | |
8882 | bfd_put_NN (output_bfd, (plt->output_section->vma | |
8883 | + plt->output_offset | |
8884 | + h->plt.offset), | |
8885 | htab->root.sgot->contents | |
8886 | + (h->got.offset & ~(bfd_vma) 1)); | |
8887 | return TRUE; | |
8888 | } | |
8889 | } | |
0e1862bb | 8890 | else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h)) |
a06ea964 NC |
8891 | { |
8892 | if (!h->def_regular) | |
8893 | return FALSE; | |
8894 | ||
8895 | BFD_ASSERT ((h->got.offset & 1) != 0); | |
a6bb11b2 | 8896 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); |
a06ea964 NC |
8897 | rela.r_addend = (h->root.u.def.value |
8898 | + h->root.u.def.section->output_section->vma | |
8899 | + h->root.u.def.section->output_offset); | |
8900 | } | |
8901 | else | |
8902 | { | |
49206388 | 8903 | do_glob_dat: |
a06ea964 | 8904 | BFD_ASSERT ((h->got.offset & 1) == 0); |
cec5225b | 8905 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 | 8906 | htab->root.sgot->contents + h->got.offset); |
a6bb11b2 | 8907 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT)); |
a06ea964 NC |
8908 | rela.r_addend = 0; |
8909 | } | |
8910 | ||
8911 | loc = htab->root.srelgot->contents; | |
8912 | loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 8913 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
8914 | } |
8915 | ||
8916 | if (h->needs_copy) | |
8917 | { | |
8918 | Elf_Internal_Rela rela; | |
8919 | bfd_byte *loc; | |
8920 | ||
8921 | /* This symbol needs a copy reloc. Set it up. */ | |
8922 | ||
8923 | if (h->dynindx == -1 | |
8924 | || (h->root.type != bfd_link_hash_defined | |
8925 | && h->root.type != bfd_link_hash_defweak) | |
8926 | || htab->srelbss == NULL) | |
8927 | abort (); | |
8928 | ||
8929 | rela.r_offset = (h->root.u.def.value | |
8930 | + h->root.u.def.section->output_section->vma | |
8931 | + h->root.u.def.section->output_offset); | |
a6bb11b2 | 8932 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY)); |
a06ea964 NC |
8933 | rela.r_addend = 0; |
8934 | loc = htab->srelbss->contents; | |
8935 | loc += htab->srelbss->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 8936 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
8937 | } |
8938 | ||
8939 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may | |
8940 | be NULL for local symbols. */ | |
8941 | if (sym != NULL | |
9637f6ef | 8942 | && (h == elf_hash_table (info)->hdynamic |
a06ea964 NC |
8943 | || h == elf_hash_table (info)->hgot)) |
8944 | sym->st_shndx = SHN_ABS; | |
8945 | ||
8946 | return TRUE; | |
8947 | } | |
8948 | ||
1419bbe5 WN |
8949 | /* Finish up local dynamic symbol handling. We set the contents of |
8950 | various dynamic sections here. */ | |
8951 | ||
8952 | static bfd_boolean | |
8953 | elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf) | |
8954 | { | |
8955 | struct elf_link_hash_entry *h | |
8956 | = (struct elf_link_hash_entry *) *slot; | |
8957 | struct bfd_link_info *info | |
8958 | = (struct bfd_link_info *) inf; | |
8959 | ||
8960 | return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd, | |
8961 | info, h, NULL); | |
8962 | } | |
8963 | ||
a06ea964 | 8964 | static void |
cec5225b YZ |
8965 | elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED, |
8966 | struct elf_aarch64_link_hash_table | |
a06ea964 NC |
8967 | *htab) |
8968 | { | |
8969 | /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between | |
8970 | small and large plts and at the minute just generates | |
8971 | the small PLT. */ | |
8972 | ||
cec5225b | 8973 | /* PLT0 of the small PLT looks like this in ELF64 - |
a06ea964 NC |
8974 | stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack. |
8975 | adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT | |
8976 | ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the | |
8977 | // symbol resolver | |
8978 | add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the | |
8979 | // GOTPLT entry for this. | |
8980 | br x17 | |
cec5225b YZ |
8981 | PLT0 will be slightly different in ELF32 due to different got entry |
8982 | size. | |
a06ea964 | 8983 | */ |
caed7120 | 8984 | bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */ |
a06ea964 NC |
8985 | bfd_vma plt_base; |
8986 | ||
8987 | ||
cec5225b | 8988 | memcpy (htab->root.splt->contents, elfNN_aarch64_small_plt0_entry, |
a06ea964 NC |
8989 | PLT_ENTRY_SIZE); |
8990 | elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize = | |
8991 | PLT_ENTRY_SIZE; | |
8992 | ||
caed7120 YZ |
8993 | plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma |
8994 | + htab->root.sgotplt->output_offset | |
8995 | + GOT_ENTRY_SIZE * 2); | |
a06ea964 NC |
8996 | |
8997 | plt_base = htab->root.splt->output_section->vma + | |
f44a1f8e | 8998 | htab->root.splt->output_offset; |
a06ea964 NC |
8999 | |
9000 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
9001 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 YZ |
9002 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
9003 | htab->root.splt->contents + 4, | |
9004 | PG (plt_got_2nd_ent) - PG (plt_base + 4)); | |
a06ea964 | 9005 | |
caed7120 YZ |
9006 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
9007 | htab->root.splt->contents + 8, | |
9008 | PG_OFFSET (plt_got_2nd_ent)); | |
a06ea964 | 9009 | |
caed7120 YZ |
9010 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
9011 | htab->root.splt->contents + 12, | |
9012 | PG_OFFSET (plt_got_2nd_ent)); | |
a06ea964 NC |
9013 | } |
9014 | ||
9015 | static bfd_boolean | |
cec5225b | 9016 | elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd, |
a06ea964 NC |
9017 | struct bfd_link_info *info) |
9018 | { | |
cec5225b | 9019 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
9020 | bfd *dynobj; |
9021 | asection *sdyn; | |
9022 | ||
cec5225b | 9023 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
9024 | dynobj = htab->root.dynobj; |
9025 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); | |
9026 | ||
9027 | if (htab->root.dynamic_sections_created) | |
9028 | { | |
cec5225b | 9029 | ElfNN_External_Dyn *dyncon, *dynconend; |
a06ea964 NC |
9030 | |
9031 | if (sdyn == NULL || htab->root.sgot == NULL) | |
9032 | abort (); | |
9033 | ||
cec5225b YZ |
9034 | dyncon = (ElfNN_External_Dyn *) sdyn->contents; |
9035 | dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size); | |
a06ea964 NC |
9036 | for (; dyncon < dynconend; dyncon++) |
9037 | { | |
9038 | Elf_Internal_Dyn dyn; | |
9039 | asection *s; | |
9040 | ||
cec5225b | 9041 | bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn); |
a06ea964 NC |
9042 | |
9043 | switch (dyn.d_tag) | |
9044 | { | |
9045 | default: | |
9046 | continue; | |
9047 | ||
9048 | case DT_PLTGOT: | |
9049 | s = htab->root.sgotplt; | |
9050 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
9051 | break; | |
9052 | ||
9053 | case DT_JMPREL: | |
4ade44b7 AM |
9054 | s = htab->root.srelplt; |
9055 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
a06ea964 NC |
9056 | break; |
9057 | ||
9058 | case DT_PLTRELSZ: | |
c955de36 | 9059 | s = htab->root.srelplt; |
a06ea964 NC |
9060 | dyn.d_un.d_val = s->size; |
9061 | break; | |
9062 | ||
9063 | case DT_RELASZ: | |
9064 | /* The procedure linkage table relocs (DT_JMPREL) should | |
9065 | not be included in the overall relocs (DT_RELA). | |
9066 | Therefore, we override the DT_RELASZ entry here to | |
9067 | make it not include the JMPREL relocs. Since the | |
9068 | linker script arranges for .rela.plt to follow all | |
9069 | other relocation sections, we don't have to worry | |
9070 | about changing the DT_RELA entry. */ | |
9071 | if (htab->root.srelplt != NULL) | |
9072 | { | |
c955de36 | 9073 | s = htab->root.srelplt; |
a06ea964 NC |
9074 | dyn.d_un.d_val -= s->size; |
9075 | } | |
9076 | break; | |
9077 | ||
9078 | case DT_TLSDESC_PLT: | |
9079 | s = htab->root.splt; | |
9080 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
9081 | + htab->tlsdesc_plt; | |
9082 | break; | |
9083 | ||
9084 | case DT_TLSDESC_GOT: | |
9085 | s = htab->root.sgot; | |
9086 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
9087 | + htab->dt_tlsdesc_got; | |
9088 | break; | |
9089 | } | |
9090 | ||
cec5225b | 9091 | bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon); |
a06ea964 NC |
9092 | } |
9093 | ||
9094 | } | |
9095 | ||
9096 | /* Fill in the special first entry in the procedure linkage table. */ | |
9097 | if (htab->root.splt && htab->root.splt->size > 0) | |
9098 | { | |
cec5225b | 9099 | elfNN_aarch64_init_small_plt0_entry (output_bfd, htab); |
a06ea964 NC |
9100 | |
9101 | elf_section_data (htab->root.splt->output_section)-> | |
9102 | this_hdr.sh_entsize = htab->plt_entry_size; | |
9103 | ||
9104 | ||
9105 | if (htab->tlsdesc_plt) | |
9106 | { | |
cec5225b | 9107 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
9108 | htab->root.sgot->contents + htab->dt_tlsdesc_got); |
9109 | ||
9110 | memcpy (htab->root.splt->contents + htab->tlsdesc_plt, | |
cec5225b YZ |
9111 | elfNN_aarch64_tlsdesc_small_plt_entry, |
9112 | sizeof (elfNN_aarch64_tlsdesc_small_plt_entry)); | |
a06ea964 NC |
9113 | |
9114 | { | |
9115 | bfd_vma adrp1_addr = | |
9116 | htab->root.splt->output_section->vma | |
9117 | + htab->root.splt->output_offset + htab->tlsdesc_plt + 4; | |
9118 | ||
caed7120 | 9119 | bfd_vma adrp2_addr = adrp1_addr + 4; |
a06ea964 NC |
9120 | |
9121 | bfd_vma got_addr = | |
9122 | htab->root.sgot->output_section->vma | |
9123 | + htab->root.sgot->output_offset; | |
9124 | ||
9125 | bfd_vma pltgot_addr = | |
9126 | htab->root.sgotplt->output_section->vma | |
9127 | + htab->root.sgotplt->output_offset; | |
9128 | ||
9129 | bfd_vma dt_tlsdesc_got = got_addr + htab->dt_tlsdesc_got; | |
caed7120 YZ |
9130 | |
9131 | bfd_byte *plt_entry = | |
9132 | htab->root.splt->contents + htab->tlsdesc_plt; | |
a06ea964 NC |
9133 | |
9134 | /* adrp x2, DT_TLSDESC_GOT */ | |
caed7120 YZ |
9135 | elf_aarch64_update_plt_entry (output_bfd, |
9136 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
9137 | plt_entry + 4, | |
9138 | (PG (dt_tlsdesc_got) | |
9139 | - PG (adrp1_addr))); | |
a06ea964 NC |
9140 | |
9141 | /* adrp x3, 0 */ | |
caed7120 YZ |
9142 | elf_aarch64_update_plt_entry (output_bfd, |
9143 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
9144 | plt_entry + 8, | |
9145 | (PG (pltgot_addr) | |
9146 | - PG (adrp2_addr))); | |
a06ea964 NC |
9147 | |
9148 | /* ldr x2, [x2, #0] */ | |
caed7120 YZ |
9149 | elf_aarch64_update_plt_entry (output_bfd, |
9150 | BFD_RELOC_AARCH64_LDSTNN_LO12, | |
9151 | plt_entry + 12, | |
9152 | PG_OFFSET (dt_tlsdesc_got)); | |
a06ea964 NC |
9153 | |
9154 | /* add x3, x3, 0 */ | |
caed7120 YZ |
9155 | elf_aarch64_update_plt_entry (output_bfd, |
9156 | BFD_RELOC_AARCH64_ADD_LO12, | |
9157 | plt_entry + 16, | |
9158 | PG_OFFSET (pltgot_addr)); | |
a06ea964 NC |
9159 | } |
9160 | } | |
9161 | } | |
9162 | ||
9163 | if (htab->root.sgotplt) | |
9164 | { | |
9165 | if (bfd_is_abs_section (htab->root.sgotplt->output_section)) | |
9166 | { | |
9167 | (*_bfd_error_handler) | |
9168 | (_("discarded output section: `%A'"), htab->root.sgotplt); | |
9169 | return FALSE; | |
9170 | } | |
9171 | ||
9172 | /* Fill in the first three entries in the global offset table. */ | |
9173 | if (htab->root.sgotplt->size > 0) | |
9174 | { | |
8db339a6 MS |
9175 | bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents); |
9176 | ||
a06ea964 | 9177 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ |
cec5225b | 9178 | bfd_put_NN (output_bfd, |
a06ea964 NC |
9179 | (bfd_vma) 0, |
9180 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE); | |
cec5225b | 9181 | bfd_put_NN (output_bfd, |
a06ea964 NC |
9182 | (bfd_vma) 0, |
9183 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2); | |
9184 | } | |
9185 | ||
8db339a6 MS |
9186 | if (htab->root.sgot) |
9187 | { | |
9188 | if (htab->root.sgot->size > 0) | |
9189 | { | |
9190 | bfd_vma addr = | |
9191 | sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0; | |
9192 | bfd_put_NN (output_bfd, addr, htab->root.sgot->contents); | |
9193 | } | |
9194 | } | |
9195 | ||
a06ea964 NC |
9196 | elf_section_data (htab->root.sgotplt->output_section)-> |
9197 | this_hdr.sh_entsize = GOT_ENTRY_SIZE; | |
9198 | } | |
9199 | ||
9200 | if (htab->root.sgot && htab->root.sgot->size > 0) | |
9201 | elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize | |
9202 | = GOT_ENTRY_SIZE; | |
9203 | ||
1419bbe5 WN |
9204 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
9205 | htab_traverse (htab->loc_hash_table, | |
9206 | elfNN_aarch64_finish_local_dynamic_symbol, | |
9207 | info); | |
9208 | ||
a06ea964 NC |
9209 | return TRUE; |
9210 | } | |
9211 | ||
9212 | /* Return address for Ith PLT stub in section PLT, for relocation REL | |
9213 | or (bfd_vma) -1 if it should not be included. */ | |
9214 | ||
9215 | static bfd_vma | |
cec5225b | 9216 | elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt, |
a06ea964 NC |
9217 | const arelent *rel ATTRIBUTE_UNUSED) |
9218 | { | |
9219 | return plt->vma + PLT_ENTRY_SIZE + i * PLT_SMALL_ENTRY_SIZE; | |
9220 | } | |
9221 | ||
9222 | ||
9223 | /* We use this so we can override certain functions | |
9224 | (though currently we don't). */ | |
9225 | ||
cec5225b | 9226 | const struct elf_size_info elfNN_aarch64_size_info = |
a06ea964 | 9227 | { |
cec5225b YZ |
9228 | sizeof (ElfNN_External_Ehdr), |
9229 | sizeof (ElfNN_External_Phdr), | |
9230 | sizeof (ElfNN_External_Shdr), | |
9231 | sizeof (ElfNN_External_Rel), | |
9232 | sizeof (ElfNN_External_Rela), | |
9233 | sizeof (ElfNN_External_Sym), | |
9234 | sizeof (ElfNN_External_Dyn), | |
a06ea964 NC |
9235 | sizeof (Elf_External_Note), |
9236 | 4, /* Hash table entry size. */ | |
9237 | 1, /* Internal relocs per external relocs. */ | |
cec5225b YZ |
9238 | ARCH_SIZE, /* Arch size. */ |
9239 | LOG_FILE_ALIGN, /* Log_file_align. */ | |
9240 | ELFCLASSNN, EV_CURRENT, | |
9241 | bfd_elfNN_write_out_phdrs, | |
9242 | bfd_elfNN_write_shdrs_and_ehdr, | |
9243 | bfd_elfNN_checksum_contents, | |
9244 | bfd_elfNN_write_relocs, | |
9245 | bfd_elfNN_swap_symbol_in, | |
9246 | bfd_elfNN_swap_symbol_out, | |
9247 | bfd_elfNN_slurp_reloc_table, | |
9248 | bfd_elfNN_slurp_symbol_table, | |
9249 | bfd_elfNN_swap_dyn_in, | |
9250 | bfd_elfNN_swap_dyn_out, | |
9251 | bfd_elfNN_swap_reloc_in, | |
9252 | bfd_elfNN_swap_reloc_out, | |
9253 | bfd_elfNN_swap_reloca_in, | |
9254 | bfd_elfNN_swap_reloca_out | |
a06ea964 NC |
9255 | }; |
9256 | ||
9257 | #define ELF_ARCH bfd_arch_aarch64 | |
9258 | #define ELF_MACHINE_CODE EM_AARCH64 | |
9259 | #define ELF_MAXPAGESIZE 0x10000 | |
9260 | #define ELF_MINPAGESIZE 0x1000 | |
9261 | #define ELF_COMMONPAGESIZE 0x1000 | |
9262 | ||
cec5225b YZ |
9263 | #define bfd_elfNN_close_and_cleanup \ |
9264 | elfNN_aarch64_close_and_cleanup | |
a06ea964 | 9265 | |
cec5225b YZ |
9266 | #define bfd_elfNN_bfd_free_cached_info \ |
9267 | elfNN_aarch64_bfd_free_cached_info | |
a06ea964 | 9268 | |
cec5225b YZ |
9269 | #define bfd_elfNN_bfd_is_target_special_symbol \ |
9270 | elfNN_aarch64_is_target_special_symbol | |
a06ea964 | 9271 | |
cec5225b YZ |
9272 | #define bfd_elfNN_bfd_link_hash_table_create \ |
9273 | elfNN_aarch64_link_hash_table_create | |
a06ea964 | 9274 | |
cec5225b YZ |
9275 | #define bfd_elfNN_bfd_merge_private_bfd_data \ |
9276 | elfNN_aarch64_merge_private_bfd_data | |
a06ea964 | 9277 | |
cec5225b YZ |
9278 | #define bfd_elfNN_bfd_print_private_bfd_data \ |
9279 | elfNN_aarch64_print_private_bfd_data | |
a06ea964 | 9280 | |
cec5225b YZ |
9281 | #define bfd_elfNN_bfd_reloc_type_lookup \ |
9282 | elfNN_aarch64_reloc_type_lookup | |
a06ea964 | 9283 | |
cec5225b YZ |
9284 | #define bfd_elfNN_bfd_reloc_name_lookup \ |
9285 | elfNN_aarch64_reloc_name_lookup | |
a06ea964 | 9286 | |
cec5225b YZ |
9287 | #define bfd_elfNN_bfd_set_private_flags \ |
9288 | elfNN_aarch64_set_private_flags | |
a06ea964 | 9289 | |
cec5225b YZ |
9290 | #define bfd_elfNN_find_inliner_info \ |
9291 | elfNN_aarch64_find_inliner_info | |
a06ea964 | 9292 | |
cec5225b YZ |
9293 | #define bfd_elfNN_find_nearest_line \ |
9294 | elfNN_aarch64_find_nearest_line | |
a06ea964 | 9295 | |
cec5225b YZ |
9296 | #define bfd_elfNN_mkobject \ |
9297 | elfNN_aarch64_mkobject | |
a06ea964 | 9298 | |
cec5225b YZ |
9299 | #define bfd_elfNN_new_section_hook \ |
9300 | elfNN_aarch64_new_section_hook | |
a06ea964 NC |
9301 | |
9302 | #define elf_backend_adjust_dynamic_symbol \ | |
cec5225b | 9303 | elfNN_aarch64_adjust_dynamic_symbol |
a06ea964 NC |
9304 | |
9305 | #define elf_backend_always_size_sections \ | |
cec5225b | 9306 | elfNN_aarch64_always_size_sections |
a06ea964 NC |
9307 | |
9308 | #define elf_backend_check_relocs \ | |
cec5225b | 9309 | elfNN_aarch64_check_relocs |
a06ea964 NC |
9310 | |
9311 | #define elf_backend_copy_indirect_symbol \ | |
cec5225b | 9312 | elfNN_aarch64_copy_indirect_symbol |
a06ea964 NC |
9313 | |
9314 | /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts | |
9315 | to them in our hash. */ | |
9316 | #define elf_backend_create_dynamic_sections \ | |
cec5225b | 9317 | elfNN_aarch64_create_dynamic_sections |
a06ea964 NC |
9318 | |
9319 | #define elf_backend_init_index_section \ | |
9320 | _bfd_elf_init_2_index_sections | |
9321 | ||
a06ea964 | 9322 | #define elf_backend_finish_dynamic_sections \ |
cec5225b | 9323 | elfNN_aarch64_finish_dynamic_sections |
a06ea964 NC |
9324 | |
9325 | #define elf_backend_finish_dynamic_symbol \ | |
cec5225b | 9326 | elfNN_aarch64_finish_dynamic_symbol |
a06ea964 NC |
9327 | |
9328 | #define elf_backend_gc_sweep_hook \ | |
cec5225b | 9329 | elfNN_aarch64_gc_sweep_hook |
a06ea964 NC |
9330 | |
9331 | #define elf_backend_object_p \ | |
cec5225b | 9332 | elfNN_aarch64_object_p |
a06ea964 NC |
9333 | |
9334 | #define elf_backend_output_arch_local_syms \ | |
cec5225b | 9335 | elfNN_aarch64_output_arch_local_syms |
a06ea964 NC |
9336 | |
9337 | #define elf_backend_plt_sym_val \ | |
cec5225b | 9338 | elfNN_aarch64_plt_sym_val |
a06ea964 NC |
9339 | |
9340 | #define elf_backend_post_process_headers \ | |
cec5225b | 9341 | elfNN_aarch64_post_process_headers |
a06ea964 NC |
9342 | |
9343 | #define elf_backend_relocate_section \ | |
cec5225b | 9344 | elfNN_aarch64_relocate_section |
a06ea964 NC |
9345 | |
9346 | #define elf_backend_reloc_type_class \ | |
cec5225b | 9347 | elfNN_aarch64_reloc_type_class |
a06ea964 | 9348 | |
a06ea964 | 9349 | #define elf_backend_section_from_shdr \ |
cec5225b | 9350 | elfNN_aarch64_section_from_shdr |
a06ea964 NC |
9351 | |
9352 | #define elf_backend_size_dynamic_sections \ | |
cec5225b | 9353 | elfNN_aarch64_size_dynamic_sections |
a06ea964 NC |
9354 | |
9355 | #define elf_backend_size_info \ | |
cec5225b | 9356 | elfNN_aarch64_size_info |
a06ea964 | 9357 | |
68fcca92 JW |
9358 | #define elf_backend_write_section \ |
9359 | elfNN_aarch64_write_section | |
9360 | ||
a06ea964 | 9361 | #define elf_backend_can_refcount 1 |
59c108f7 | 9362 | #define elf_backend_can_gc_sections 1 |
a06ea964 NC |
9363 | #define elf_backend_plt_readonly 1 |
9364 | #define elf_backend_want_got_plt 1 | |
9365 | #define elf_backend_want_plt_sym 0 | |
9366 | #define elf_backend_may_use_rel_p 0 | |
9367 | #define elf_backend_may_use_rela_p 1 | |
9368 | #define elf_backend_default_use_rela_p 1 | |
2e0488d3 | 9369 | #define elf_backend_rela_normal 1 |
a06ea964 | 9370 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3) |
c495064d | 9371 | #define elf_backend_default_execstack 0 |
32f573bc | 9372 | #define elf_backend_extern_protected_data 1 |
a06ea964 NC |
9373 | |
9374 | #undef elf_backend_obj_attrs_section | |
9375 | #define elf_backend_obj_attrs_section ".ARM.attributes" | |
9376 | ||
cec5225b | 9377 | #include "elfNN-target.h" |
a75cf613 ES |
9378 | |
9379 | /* CloudABI support. */ | |
9380 | ||
9381 | #undef TARGET_LITTLE_SYM | |
9382 | #define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec | |
9383 | #undef TARGET_LITTLE_NAME | |
9384 | #define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi" | |
9385 | #undef TARGET_BIG_SYM | |
9386 | #define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec | |
9387 | #undef TARGET_BIG_NAME | |
9388 | #define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi" | |
9389 | ||
9390 | #undef ELF_OSABI | |
9391 | #define ELF_OSABI ELFOSABI_CLOUDABI | |
9392 | ||
9393 | #undef elfNN_bed | |
9394 | #define elfNN_bed elfNN_aarch64_cloudabi_bed | |
9395 | ||
9396 | #include "elfNN-target.h" |