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cec5225b | 1 | /* AArch64-specific support for NN-bit ELF. |
219d1afa | 2 | Copyright (C) 2009-2018 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 | |
07d6d2b8 | 34 | R_AARCH64_TLSGD_ADR_PAGE21(foo) |
a06ea964 | 35 | add x0, :tlsgd_lo12:foo |
07d6d2b8 | 36 | R_AARCH64_TLSGD_ADD_LO12_NC(foo) |
a06ea964 NC |
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 | ||
07d6d2b8 AM |
43 | adrp x0, :tlsdesc:foo R_AARCH64_TLSDESC_ADR_PAGE21(foo) |
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) | |
a06ea964 | 46 | .tlsdesccall foo |
07d6d2b8 | 47 | blr x1 R_AARCH64_TLSDESC_CALL(foo) |
a06ea964 NC |
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 | 156 | #define LOG_FILE_ALIGN 3 |
f955cccf | 157 | #define BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC BFD_RELOC_AARCH64_TLSDESC_LD64_LO12 |
cec5225b YZ |
158 | #endif |
159 | ||
160 | #if ARCH_SIZE == 32 | |
161 | #define AARCH64_R(NAME) R_AARCH64_P32_ ## NAME | |
162 | #define AARCH64_R_STR(NAME) "R_AARCH64_P32_" #NAME | |
a6bb11b2 YZ |
163 | #define HOWTO64(...) EMPTY_HOWTO (0) |
164 | #define HOWTO32(...) HOWTO (__VA_ARGS__) | |
cec5225b | 165 | #define LOG_FILE_ALIGN 2 |
07d6d2b8 AM |
166 | #define BFD_RELOC_AARCH64_TLSDESC_LD32_LO12 BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC |
167 | #define R_AARCH64_P32_TLSDESC_ADD_LO12 R_AARCH64_P32_TLSDESC_ADD_LO12_NC | |
cec5225b YZ |
168 | #endif |
169 | ||
a6bb11b2 | 170 | #define IS_AARCH64_TLS_RELOC(R_TYPE) \ |
4c0a9a6f JW |
171 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \ |
172 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \ | |
3c12b054 | 173 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \ |
3e8286c0 | 174 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \ |
1aa66fb1 | 175 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \ |
a6bb11b2 | 176 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \ |
a6bb11b2 | 177 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC \ |
4c0a9a6f | 178 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC \ |
a6bb11b2 | 179 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \ |
4c0a9a6f JW |
180 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC \ |
181 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1 \ | |
6ffe9a1b | 182 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12 \ |
40fbed84 | 183 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12 \ |
753999c1 | 184 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC \ |
73f925cc | 185 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \ |
f69e4920 | 186 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \ |
77a69ff8 | 187 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 \ |
07c9aa07 JW |
188 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12 \ |
189 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC \ | |
190 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12 \ | |
191 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC \ | |
192 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12 \ | |
193 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC \ | |
194 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12 \ | |
195 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC \ | |
6ffe9a1b JW |
196 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0 \ |
197 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC \ | |
198 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1 \ | |
199 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC \ | |
200 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2 \ | |
a6bb11b2 | 201 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 \ |
4c0a9a6f | 202 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12 \ |
a6bb11b2 | 203 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC \ |
a6bb11b2 YZ |
204 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0 \ |
205 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC \ | |
4c0a9a6f JW |
206 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 \ |
207 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC \ | |
208 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 \ | |
a6bb11b2 YZ |
209 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPMOD \ |
210 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPREL \ | |
211 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_TPREL \ | |
a06ea964 NC |
212 | || IS_AARCH64_TLSDESC_RELOC ((R_TYPE))) |
213 | ||
9331eea1 | 214 | #define IS_AARCH64_TLS_RELAX_RELOC(R_TYPE) \ |
f955cccf NC |
215 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \ |
216 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12 \ | |
4af68b9c JW |
217 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \ |
218 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \ | |
219 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \ | |
220 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \ | |
221 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC \ | |
0484b454 RL |
222 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \ |
223 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \ | |
224 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1 \ | |
225 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \ | |
4af68b9c | 226 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \ |
9331eea1 JW |
227 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \ |
228 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \ | |
ac734732 RL |
229 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \ |
230 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \ | |
9331eea1 JW |
231 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \ |
232 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \ | |
233 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC \ | |
259364ad JW |
234 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \ |
235 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \ | |
4af68b9c | 236 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21) |
9331eea1 | 237 | |
a6bb11b2 | 238 | #define IS_AARCH64_TLSDESC_RELOC(R_TYPE) \ |
4c0a9a6f JW |
239 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC \ |
240 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \ | |
f955cccf | 241 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12 \ |
a6bb11b2 | 242 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \ |
389b8029 | 243 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \ |
4c0a9a6f | 244 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \ |
a6bb11b2 | 245 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC \ |
f955cccf | 246 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD64_LO12 \ |
a6bb11b2 | 247 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \ |
4c0a9a6f JW |
248 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \ |
249 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \ | |
250 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1) | |
a06ea964 | 251 | |
6353d82b | 252 | #define ELIMINATE_COPY_RELOCS 1 |
a06ea964 | 253 | |
a06ea964 | 254 | /* Return size of a relocation entry. HTAB is the bfd's |
cec5225b YZ |
255 | elf_aarch64_link_hash_entry. */ |
256 | #define RELOC_SIZE(HTAB) (sizeof (ElfNN_External_Rela)) | |
a06ea964 | 257 | |
cec5225b | 258 | /* GOT Entry size - 8 bytes in ELF64 and 4 bytes in ELF32. */ |
07d6d2b8 AM |
259 | #define GOT_ENTRY_SIZE (ARCH_SIZE / 8) |
260 | #define PLT_ENTRY_SIZE (32) | |
261 | #define PLT_SMALL_ENTRY_SIZE (16) | |
262 | #define PLT_TLSDESC_ENTRY_SIZE (32) | |
a06ea964 | 263 | |
2d0ca824 | 264 | /* Encoding of the nop instruction. */ |
a06ea964 NC |
265 | #define INSN_NOP 0xd503201f |
266 | ||
267 | #define aarch64_compute_jump_table_size(htab) \ | |
268 | (((htab)->root.srelplt == NULL) ? 0 \ | |
269 | : (htab)->root.srelplt->reloc_count * GOT_ENTRY_SIZE) | |
270 | ||
271 | /* The first entry in a procedure linkage table looks like this | |
272 | if the distance between the PLTGOT and the PLT is < 4GB use | |
273 | these PLT entries. Note that the dynamic linker gets &PLTGOT[2] | |
274 | in x16 and needs to work out PLTGOT[1] by using an address of | |
cec5225b YZ |
275 | [x16,#-GOT_ENTRY_SIZE]. */ |
276 | static const bfd_byte elfNN_aarch64_small_plt0_entry[PLT_ENTRY_SIZE] = | |
a06ea964 NC |
277 | { |
278 | 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */ | |
279 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */ | |
caed7120 | 280 | #if ARCH_SIZE == 64 |
a06ea964 NC |
281 | 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */ |
282 | 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */ | |
caed7120 YZ |
283 | #else |
284 | 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */ | |
285 | 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */ | |
286 | #endif | |
a06ea964 NC |
287 | 0x20, 0x02, 0x1f, 0xd6, /* br x17 */ |
288 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
289 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
290 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
291 | }; | |
292 | ||
293 | /* Per function entry in a procedure linkage table looks like this | |
294 | if the distance between the PLTGOT and the PLT is < 4GB use | |
295 | these PLT entries. */ | |
cec5225b | 296 | static const bfd_byte elfNN_aarch64_small_plt_entry[PLT_SMALL_ENTRY_SIZE] = |
a06ea964 NC |
297 | { |
298 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
caed7120 | 299 | #if ARCH_SIZE == 64 |
a06ea964 NC |
300 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ |
301 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
caed7120 YZ |
302 | #else |
303 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
304 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
305 | #endif | |
a06ea964 NC |
306 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ |
307 | }; | |
308 | ||
309 | static const bfd_byte | |
cec5225b | 310 | elfNN_aarch64_tlsdesc_small_plt_entry[PLT_TLSDESC_ENTRY_SIZE] = |
a06ea964 NC |
311 | { |
312 | 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */ | |
313 | 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */ | |
314 | 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */ | |
caed7120 YZ |
315 | #if ARCH_SIZE == 64 |
316 | 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */ | |
a06ea964 | 317 | 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */ |
caed7120 YZ |
318 | #else |
319 | 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */ | |
320 | 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */ | |
321 | #endif | |
322 | 0x40, 0x00, 0x1f, 0xd6, /* br x2 */ | |
a06ea964 NC |
323 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ |
324 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
325 | }; | |
326 | ||
07d6d2b8 AM |
327 | #define elf_info_to_howto elfNN_aarch64_info_to_howto |
328 | #define elf_info_to_howto_rel elfNN_aarch64_info_to_howto | |
a06ea964 NC |
329 | |
330 | #define AARCH64_ELF_ABI_VERSION 0 | |
a06ea964 NC |
331 | |
332 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ | |
333 | #define ALL_ONES (~ (bfd_vma) 0) | |
334 | ||
a6bb11b2 YZ |
335 | /* Indexed by the bfd interal reloc enumerators. |
336 | Therefore, the table needs to be synced with BFD_RELOC_AARCH64_* | |
337 | in reloc.c. */ | |
a06ea964 | 338 | |
a6bb11b2 | 339 | static reloc_howto_type elfNN_aarch64_howto_table[] = |
a06ea964 | 340 | { |
a6bb11b2 | 341 | EMPTY_HOWTO (0), |
a06ea964 | 342 | |
a6bb11b2 | 343 | /* Basic data relocations. */ |
a06ea964 | 344 | |
b7f28d87 JW |
345 | /* Deprecated, but retained for backwards compatibility. */ |
346 | HOWTO64 (R_AARCH64_NULL, /* type */ | |
a06ea964 | 347 | 0, /* rightshift */ |
6346d5ca | 348 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a6bb11b2 | 349 | 0, /* bitsize */ |
a06ea964 NC |
350 | FALSE, /* pc_relative */ |
351 | 0, /* bitpos */ | |
352 | complain_overflow_dont, /* complain_on_overflow */ | |
353 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 354 | "R_AARCH64_NULL", /* name */ |
a06ea964 NC |
355 | FALSE, /* partial_inplace */ |
356 | 0, /* src_mask */ | |
a6bb11b2 | 357 | 0, /* dst_mask */ |
a06ea964 | 358 | FALSE), /* pcrel_offset */ |
a6bb11b2 | 359 | HOWTO (R_AARCH64_NONE, /* type */ |
a06ea964 | 360 | 0, /* rightshift */ |
6346d5ca | 361 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a06ea964 NC |
362 | 0, /* bitsize */ |
363 | FALSE, /* pc_relative */ | |
364 | 0, /* bitpos */ | |
365 | complain_overflow_dont, /* complain_on_overflow */ | |
366 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 367 | "R_AARCH64_NONE", /* name */ |
a06ea964 NC |
368 | FALSE, /* partial_inplace */ |
369 | 0, /* src_mask */ | |
370 | 0, /* dst_mask */ | |
371 | FALSE), /* pcrel_offset */ | |
372 | ||
373 | /* .xword: (S+A) */ | |
a6bb11b2 | 374 | HOWTO64 (AARCH64_R (ABS64), /* type */ |
a06ea964 NC |
375 | 0, /* rightshift */ |
376 | 4, /* size (4 = long long) */ | |
377 | 64, /* bitsize */ | |
378 | FALSE, /* pc_relative */ | |
379 | 0, /* bitpos */ | |
380 | complain_overflow_unsigned, /* complain_on_overflow */ | |
381 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 382 | AARCH64_R_STR (ABS64), /* name */ |
a06ea964 NC |
383 | FALSE, /* partial_inplace */ |
384 | ALL_ONES, /* src_mask */ | |
385 | ALL_ONES, /* dst_mask */ | |
386 | FALSE), /* pcrel_offset */ | |
387 | ||
388 | /* .word: (S+A) */ | |
a6bb11b2 | 389 | HOWTO (AARCH64_R (ABS32), /* type */ |
a06ea964 NC |
390 | 0, /* rightshift */ |
391 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
392 | 32, /* bitsize */ | |
393 | FALSE, /* pc_relative */ | |
394 | 0, /* bitpos */ | |
395 | complain_overflow_unsigned, /* complain_on_overflow */ | |
396 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 397 | AARCH64_R_STR (ABS32), /* name */ |
a06ea964 NC |
398 | FALSE, /* partial_inplace */ |
399 | 0xffffffff, /* src_mask */ | |
400 | 0xffffffff, /* dst_mask */ | |
401 | FALSE), /* pcrel_offset */ | |
402 | ||
403 | /* .half: (S+A) */ | |
a6bb11b2 | 404 | HOWTO (AARCH64_R (ABS16), /* type */ |
a06ea964 NC |
405 | 0, /* rightshift */ |
406 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
407 | 16, /* bitsize */ | |
408 | FALSE, /* pc_relative */ | |
409 | 0, /* bitpos */ | |
410 | complain_overflow_unsigned, /* complain_on_overflow */ | |
411 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 412 | AARCH64_R_STR (ABS16), /* name */ |
a06ea964 NC |
413 | FALSE, /* partial_inplace */ |
414 | 0xffff, /* src_mask */ | |
415 | 0xffff, /* dst_mask */ | |
416 | FALSE), /* pcrel_offset */ | |
417 | ||
418 | /* .xword: (S+A-P) */ | |
a6bb11b2 | 419 | HOWTO64 (AARCH64_R (PREL64), /* type */ |
a06ea964 NC |
420 | 0, /* rightshift */ |
421 | 4, /* size (4 = long long) */ | |
422 | 64, /* bitsize */ | |
423 | TRUE, /* pc_relative */ | |
424 | 0, /* bitpos */ | |
425 | complain_overflow_signed, /* complain_on_overflow */ | |
426 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 427 | AARCH64_R_STR (PREL64), /* name */ |
a06ea964 NC |
428 | FALSE, /* partial_inplace */ |
429 | ALL_ONES, /* src_mask */ | |
430 | ALL_ONES, /* dst_mask */ | |
431 | TRUE), /* pcrel_offset */ | |
432 | ||
433 | /* .word: (S+A-P) */ | |
a6bb11b2 | 434 | HOWTO (AARCH64_R (PREL32), /* type */ |
a06ea964 NC |
435 | 0, /* rightshift */ |
436 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
437 | 32, /* bitsize */ | |
438 | TRUE, /* pc_relative */ | |
439 | 0, /* bitpos */ | |
440 | complain_overflow_signed, /* complain_on_overflow */ | |
441 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 442 | AARCH64_R_STR (PREL32), /* name */ |
a06ea964 NC |
443 | FALSE, /* partial_inplace */ |
444 | 0xffffffff, /* src_mask */ | |
445 | 0xffffffff, /* dst_mask */ | |
446 | TRUE), /* pcrel_offset */ | |
447 | ||
448 | /* .half: (S+A-P) */ | |
a6bb11b2 | 449 | HOWTO (AARCH64_R (PREL16), /* type */ |
a06ea964 NC |
450 | 0, /* rightshift */ |
451 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
452 | 16, /* bitsize */ | |
453 | TRUE, /* pc_relative */ | |
454 | 0, /* bitpos */ | |
455 | complain_overflow_signed, /* complain_on_overflow */ | |
456 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 457 | AARCH64_R_STR (PREL16), /* name */ |
a06ea964 NC |
458 | FALSE, /* partial_inplace */ |
459 | 0xffff, /* src_mask */ | |
460 | 0xffff, /* dst_mask */ | |
461 | TRUE), /* pcrel_offset */ | |
462 | ||
463 | /* Group relocations to create a 16, 32, 48 or 64 bit | |
464 | unsigned data or abs address inline. */ | |
465 | ||
466 | /* MOVZ: ((S+A) >> 0) & 0xffff */ | |
a6bb11b2 | 467 | HOWTO (AARCH64_R (MOVW_UABS_G0), /* type */ |
a06ea964 NC |
468 | 0, /* rightshift */ |
469 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
470 | 16, /* bitsize */ | |
471 | FALSE, /* pc_relative */ | |
472 | 0, /* bitpos */ | |
473 | complain_overflow_unsigned, /* complain_on_overflow */ | |
474 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 475 | AARCH64_R_STR (MOVW_UABS_G0), /* name */ |
a06ea964 NC |
476 | FALSE, /* partial_inplace */ |
477 | 0xffff, /* src_mask */ | |
478 | 0xffff, /* dst_mask */ | |
479 | FALSE), /* pcrel_offset */ | |
480 | ||
481 | /* MOVK: ((S+A) >> 0) & 0xffff [no overflow check] */ | |
a6bb11b2 | 482 | HOWTO (AARCH64_R (MOVW_UABS_G0_NC), /* type */ |
a06ea964 NC |
483 | 0, /* rightshift */ |
484 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
485 | 16, /* bitsize */ | |
486 | FALSE, /* pc_relative */ | |
487 | 0, /* bitpos */ | |
488 | complain_overflow_dont, /* complain_on_overflow */ | |
489 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 490 | AARCH64_R_STR (MOVW_UABS_G0_NC), /* name */ |
a06ea964 NC |
491 | FALSE, /* partial_inplace */ |
492 | 0xffff, /* src_mask */ | |
493 | 0xffff, /* dst_mask */ | |
494 | FALSE), /* pcrel_offset */ | |
495 | ||
496 | /* MOVZ: ((S+A) >> 16) & 0xffff */ | |
a6bb11b2 | 497 | HOWTO (AARCH64_R (MOVW_UABS_G1), /* type */ |
a06ea964 NC |
498 | 16, /* rightshift */ |
499 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
500 | 16, /* bitsize */ | |
501 | FALSE, /* pc_relative */ | |
502 | 0, /* bitpos */ | |
503 | complain_overflow_unsigned, /* complain_on_overflow */ | |
504 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 505 | AARCH64_R_STR (MOVW_UABS_G1), /* name */ |
a06ea964 NC |
506 | FALSE, /* partial_inplace */ |
507 | 0xffff, /* src_mask */ | |
508 | 0xffff, /* dst_mask */ | |
509 | FALSE), /* pcrel_offset */ | |
510 | ||
511 | /* MOVK: ((S+A) >> 16) & 0xffff [no overflow check] */ | |
a6bb11b2 | 512 | HOWTO64 (AARCH64_R (MOVW_UABS_G1_NC), /* type */ |
a06ea964 NC |
513 | 16, /* rightshift */ |
514 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
515 | 16, /* bitsize */ | |
516 | FALSE, /* pc_relative */ | |
517 | 0, /* bitpos */ | |
518 | complain_overflow_dont, /* complain_on_overflow */ | |
519 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 520 | AARCH64_R_STR (MOVW_UABS_G1_NC), /* name */ |
a06ea964 NC |
521 | FALSE, /* partial_inplace */ |
522 | 0xffff, /* src_mask */ | |
523 | 0xffff, /* dst_mask */ | |
524 | FALSE), /* pcrel_offset */ | |
525 | ||
526 | /* MOVZ: ((S+A) >> 32) & 0xffff */ | |
a6bb11b2 | 527 | HOWTO64 (AARCH64_R (MOVW_UABS_G2), /* type */ |
a06ea964 NC |
528 | 32, /* rightshift */ |
529 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
530 | 16, /* bitsize */ | |
531 | FALSE, /* pc_relative */ | |
532 | 0, /* bitpos */ | |
533 | complain_overflow_unsigned, /* complain_on_overflow */ | |
534 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 535 | AARCH64_R_STR (MOVW_UABS_G2), /* name */ |
a06ea964 NC |
536 | FALSE, /* partial_inplace */ |
537 | 0xffff, /* src_mask */ | |
538 | 0xffff, /* dst_mask */ | |
539 | FALSE), /* pcrel_offset */ | |
540 | ||
541 | /* MOVK: ((S+A) >> 32) & 0xffff [no overflow check] */ | |
a6bb11b2 | 542 | HOWTO64 (AARCH64_R (MOVW_UABS_G2_NC), /* type */ |
a06ea964 NC |
543 | 32, /* rightshift */ |
544 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
545 | 16, /* bitsize */ | |
546 | FALSE, /* pc_relative */ | |
547 | 0, /* bitpos */ | |
548 | complain_overflow_dont, /* complain_on_overflow */ | |
549 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 550 | AARCH64_R_STR (MOVW_UABS_G2_NC), /* name */ |
a06ea964 NC |
551 | FALSE, /* partial_inplace */ |
552 | 0xffff, /* src_mask */ | |
553 | 0xffff, /* dst_mask */ | |
554 | FALSE), /* pcrel_offset */ | |
555 | ||
556 | /* MOVZ: ((S+A) >> 48) & 0xffff */ | |
a6bb11b2 | 557 | HOWTO64 (AARCH64_R (MOVW_UABS_G3), /* type */ |
a06ea964 NC |
558 | 48, /* rightshift */ |
559 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
560 | 16, /* bitsize */ | |
561 | FALSE, /* pc_relative */ | |
562 | 0, /* bitpos */ | |
563 | complain_overflow_unsigned, /* complain_on_overflow */ | |
564 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 565 | AARCH64_R_STR (MOVW_UABS_G3), /* name */ |
a06ea964 NC |
566 | FALSE, /* partial_inplace */ |
567 | 0xffff, /* src_mask */ | |
568 | 0xffff, /* dst_mask */ | |
569 | FALSE), /* pcrel_offset */ | |
570 | ||
571 | /* Group relocations to create high part of a 16, 32, 48 or 64 bit | |
572 | signed data or abs address inline. Will change instruction | |
573 | to MOVN or MOVZ depending on sign of calculated value. */ | |
574 | ||
575 | /* MOV[ZN]: ((S+A) >> 0) & 0xffff */ | |
a6bb11b2 | 576 | HOWTO (AARCH64_R (MOVW_SABS_G0), /* type */ |
a06ea964 NC |
577 | 0, /* rightshift */ |
578 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c5e3a364 | 579 | 17, /* bitsize */ |
a06ea964 NC |
580 | FALSE, /* pc_relative */ |
581 | 0, /* bitpos */ | |
582 | complain_overflow_signed, /* complain_on_overflow */ | |
583 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 584 | AARCH64_R_STR (MOVW_SABS_G0), /* name */ |
a06ea964 NC |
585 | FALSE, /* partial_inplace */ |
586 | 0xffff, /* src_mask */ | |
587 | 0xffff, /* dst_mask */ | |
588 | FALSE), /* pcrel_offset */ | |
589 | ||
590 | /* MOV[ZN]: ((S+A) >> 16) & 0xffff */ | |
a6bb11b2 | 591 | HOWTO64 (AARCH64_R (MOVW_SABS_G1), /* type */ |
a06ea964 NC |
592 | 16, /* rightshift */ |
593 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c5e3a364 | 594 | 17, /* bitsize */ |
a06ea964 NC |
595 | FALSE, /* pc_relative */ |
596 | 0, /* bitpos */ | |
597 | complain_overflow_signed, /* complain_on_overflow */ | |
598 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 599 | AARCH64_R_STR (MOVW_SABS_G1), /* name */ |
a06ea964 NC |
600 | FALSE, /* partial_inplace */ |
601 | 0xffff, /* src_mask */ | |
602 | 0xffff, /* dst_mask */ | |
603 | FALSE), /* pcrel_offset */ | |
604 | ||
605 | /* MOV[ZN]: ((S+A) >> 32) & 0xffff */ | |
a6bb11b2 | 606 | HOWTO64 (AARCH64_R (MOVW_SABS_G2), /* type */ |
a06ea964 NC |
607 | 32, /* rightshift */ |
608 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c5e3a364 | 609 | 17, /* bitsize */ |
a06ea964 NC |
610 | FALSE, /* pc_relative */ |
611 | 0, /* bitpos */ | |
612 | complain_overflow_signed, /* complain_on_overflow */ | |
613 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 614 | AARCH64_R_STR (MOVW_SABS_G2), /* name */ |
a06ea964 NC |
615 | FALSE, /* partial_inplace */ |
616 | 0xffff, /* src_mask */ | |
617 | 0xffff, /* dst_mask */ | |
618 | FALSE), /* pcrel_offset */ | |
619 | ||
32247401 RL |
620 | /* Group relocations to create a 16, 32, 48 or 64 bit |
621 | PC relative address inline. */ | |
622 | ||
623 | /* MOV[NZ]: ((S+A-P) >> 0) & 0xffff */ | |
624 | HOWTO64 (AARCH64_R (MOVW_PREL_G0), /* type */ | |
625 | 0, /* rightshift */ | |
626 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
627 | 17, /* bitsize */ | |
628 | TRUE, /* pc_relative */ | |
629 | 0, /* bitpos */ | |
630 | complain_overflow_signed, /* complain_on_overflow */ | |
631 | bfd_elf_generic_reloc, /* special_function */ | |
632 | AARCH64_R_STR (MOVW_PREL_G0), /* name */ | |
633 | FALSE, /* partial_inplace */ | |
634 | 0xffff, /* src_mask */ | |
635 | 0xffff, /* dst_mask */ | |
636 | TRUE), /* pcrel_offset */ | |
637 | ||
638 | /* MOVK: ((S+A-P) >> 0) & 0xffff [no overflow check] */ | |
639 | HOWTO64 (AARCH64_R (MOVW_PREL_G0_NC), /* type */ | |
640 | 0, /* rightshift */ | |
641 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
642 | 16, /* bitsize */ | |
643 | TRUE, /* pc_relative */ | |
644 | 0, /* bitpos */ | |
645 | complain_overflow_dont, /* complain_on_overflow */ | |
646 | bfd_elf_generic_reloc, /* special_function */ | |
647 | AARCH64_R_STR (MOVW_PREL_G0_NC), /* name */ | |
648 | FALSE, /* partial_inplace */ | |
649 | 0xffff, /* src_mask */ | |
650 | 0xffff, /* dst_mask */ | |
651 | TRUE), /* pcrel_offset */ | |
652 | ||
653 | /* MOV[NZ]: ((S+A-P) >> 16) & 0xffff */ | |
654 | HOWTO64 (AARCH64_R (MOVW_PREL_G1), /* type */ | |
655 | 16, /* rightshift */ | |
656 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
657 | 17, /* bitsize */ | |
658 | TRUE, /* pc_relative */ | |
659 | 0, /* bitpos */ | |
660 | complain_overflow_signed, /* complain_on_overflow */ | |
661 | bfd_elf_generic_reloc, /* special_function */ | |
662 | AARCH64_R_STR (MOVW_PREL_G1), /* name */ | |
663 | FALSE, /* partial_inplace */ | |
664 | 0xffff, /* src_mask */ | |
665 | 0xffff, /* dst_mask */ | |
666 | TRUE), /* pcrel_offset */ | |
667 | ||
668 | /* MOVK: ((S+A-P) >> 16) & 0xffff [no overflow check] */ | |
669 | HOWTO64 (AARCH64_R (MOVW_PREL_G1_NC), /* type */ | |
670 | 16, /* rightshift */ | |
671 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
672 | 16, /* bitsize */ | |
673 | TRUE, /* pc_relative */ | |
674 | 0, /* bitpos */ | |
675 | complain_overflow_dont, /* complain_on_overflow */ | |
676 | bfd_elf_generic_reloc, /* special_function */ | |
677 | AARCH64_R_STR (MOVW_PREL_G1_NC), /* name */ | |
678 | FALSE, /* partial_inplace */ | |
679 | 0xffff, /* src_mask */ | |
680 | 0xffff, /* dst_mask */ | |
681 | TRUE), /* pcrel_offset */ | |
682 | ||
683 | /* MOV[NZ]: ((S+A-P) >> 32) & 0xffff */ | |
684 | HOWTO64 (AARCH64_R (MOVW_PREL_G2), /* type */ | |
685 | 32, /* rightshift */ | |
686 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
687 | 17, /* bitsize */ | |
688 | TRUE, /* pc_relative */ | |
689 | 0, /* bitpos */ | |
690 | complain_overflow_signed, /* complain_on_overflow */ | |
691 | bfd_elf_generic_reloc, /* special_function */ | |
692 | AARCH64_R_STR (MOVW_PREL_G2), /* name */ | |
693 | FALSE, /* partial_inplace */ | |
694 | 0xffff, /* src_mask */ | |
695 | 0xffff, /* dst_mask */ | |
696 | TRUE), /* pcrel_offset */ | |
697 | ||
698 | /* MOVK: ((S+A-P) >> 32) & 0xffff [no overflow check] */ | |
699 | HOWTO64 (AARCH64_R (MOVW_PREL_G2_NC), /* type */ | |
700 | 32, /* rightshift */ | |
701 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
702 | 16, /* bitsize */ | |
703 | TRUE, /* pc_relative */ | |
704 | 0, /* bitpos */ | |
705 | complain_overflow_dont, /* complain_on_overflow */ | |
706 | bfd_elf_generic_reloc, /* special_function */ | |
707 | AARCH64_R_STR (MOVW_PREL_G2_NC), /* name */ | |
708 | FALSE, /* partial_inplace */ | |
709 | 0xffff, /* src_mask */ | |
710 | 0xffff, /* dst_mask */ | |
711 | TRUE), /* pcrel_offset */ | |
712 | ||
713 | /* MOV[NZ]: ((S+A-P) >> 48) & 0xffff */ | |
714 | HOWTO64 (AARCH64_R (MOVW_PREL_G3), /* type */ | |
715 | 48, /* rightshift */ | |
716 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
717 | 16, /* bitsize */ | |
718 | TRUE, /* pc_relative */ | |
719 | 0, /* bitpos */ | |
720 | complain_overflow_dont, /* complain_on_overflow */ | |
721 | bfd_elf_generic_reloc, /* special_function */ | |
722 | AARCH64_R_STR (MOVW_PREL_G3), /* name */ | |
723 | FALSE, /* partial_inplace */ | |
724 | 0xffff, /* src_mask */ | |
725 | 0xffff, /* dst_mask */ | |
726 | TRUE), /* pcrel_offset */ | |
727 | ||
a06ea964 NC |
728 | /* Relocations to generate 19, 21 and 33 bit PC-relative load/store |
729 | addresses: PG(x) is (x & ~0xfff). */ | |
730 | ||
731 | /* LD-lit: ((S+A-P) >> 2) & 0x7ffff */ | |
a6bb11b2 | 732 | HOWTO (AARCH64_R (LD_PREL_LO19), /* type */ |
a06ea964 NC |
733 | 2, /* rightshift */ |
734 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
735 | 19, /* bitsize */ | |
736 | TRUE, /* pc_relative */ | |
737 | 0, /* bitpos */ | |
738 | complain_overflow_signed, /* complain_on_overflow */ | |
739 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 740 | AARCH64_R_STR (LD_PREL_LO19), /* name */ |
a06ea964 NC |
741 | FALSE, /* partial_inplace */ |
742 | 0x7ffff, /* src_mask */ | |
743 | 0x7ffff, /* dst_mask */ | |
744 | TRUE), /* pcrel_offset */ | |
745 | ||
746 | /* ADR: (S+A-P) & 0x1fffff */ | |
a6bb11b2 | 747 | HOWTO (AARCH64_R (ADR_PREL_LO21), /* type */ |
a06ea964 NC |
748 | 0, /* rightshift */ |
749 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
750 | 21, /* bitsize */ | |
751 | TRUE, /* pc_relative */ | |
752 | 0, /* bitpos */ | |
753 | complain_overflow_signed, /* complain_on_overflow */ | |
754 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 755 | AARCH64_R_STR (ADR_PREL_LO21), /* name */ |
a06ea964 NC |
756 | FALSE, /* partial_inplace */ |
757 | 0x1fffff, /* src_mask */ | |
758 | 0x1fffff, /* dst_mask */ | |
759 | TRUE), /* pcrel_offset */ | |
760 | ||
761 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
a6bb11b2 | 762 | HOWTO (AARCH64_R (ADR_PREL_PG_HI21), /* type */ |
a06ea964 NC |
763 | 12, /* rightshift */ |
764 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
765 | 21, /* bitsize */ | |
766 | TRUE, /* pc_relative */ | |
767 | 0, /* bitpos */ | |
768 | complain_overflow_signed, /* complain_on_overflow */ | |
769 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 770 | AARCH64_R_STR (ADR_PREL_PG_HI21), /* name */ |
a06ea964 NC |
771 | FALSE, /* partial_inplace */ |
772 | 0x1fffff, /* src_mask */ | |
773 | 0x1fffff, /* dst_mask */ | |
774 | TRUE), /* pcrel_offset */ | |
775 | ||
776 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff [no overflow check] */ | |
a6bb11b2 | 777 | HOWTO64 (AARCH64_R (ADR_PREL_PG_HI21_NC), /* type */ |
a06ea964 NC |
778 | 12, /* rightshift */ |
779 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
780 | 21, /* bitsize */ | |
781 | TRUE, /* pc_relative */ | |
782 | 0, /* bitpos */ | |
783 | complain_overflow_dont, /* complain_on_overflow */ | |
784 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 785 | AARCH64_R_STR (ADR_PREL_PG_HI21_NC), /* name */ |
a06ea964 NC |
786 | FALSE, /* partial_inplace */ |
787 | 0x1fffff, /* src_mask */ | |
788 | 0x1fffff, /* dst_mask */ | |
789 | TRUE), /* pcrel_offset */ | |
790 | ||
791 | /* ADD: (S+A) & 0xfff [no overflow check] */ | |
a6bb11b2 | 792 | HOWTO (AARCH64_R (ADD_ABS_LO12_NC), /* type */ |
a06ea964 NC |
793 | 0, /* rightshift */ |
794 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
795 | 12, /* bitsize */ | |
796 | FALSE, /* pc_relative */ | |
797 | 10, /* bitpos */ | |
798 | complain_overflow_dont, /* complain_on_overflow */ | |
799 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 800 | AARCH64_R_STR (ADD_ABS_LO12_NC), /* name */ |
a06ea964 NC |
801 | FALSE, /* partial_inplace */ |
802 | 0x3ffc00, /* src_mask */ | |
803 | 0x3ffc00, /* dst_mask */ | |
804 | FALSE), /* pcrel_offset */ | |
805 | ||
806 | /* LD/ST8: (S+A) & 0xfff */ | |
a6bb11b2 | 807 | HOWTO (AARCH64_R (LDST8_ABS_LO12_NC), /* type */ |
a06ea964 NC |
808 | 0, /* rightshift */ |
809 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
810 | 12, /* bitsize */ | |
811 | FALSE, /* pc_relative */ | |
812 | 0, /* bitpos */ | |
813 | complain_overflow_dont, /* complain_on_overflow */ | |
814 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 815 | AARCH64_R_STR (LDST8_ABS_LO12_NC), /* name */ |
a06ea964 NC |
816 | FALSE, /* partial_inplace */ |
817 | 0xfff, /* src_mask */ | |
818 | 0xfff, /* dst_mask */ | |
819 | FALSE), /* pcrel_offset */ | |
820 | ||
821 | /* Relocations for control-flow instructions. */ | |
822 | ||
823 | /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */ | |
a6bb11b2 | 824 | HOWTO (AARCH64_R (TSTBR14), /* type */ |
a06ea964 NC |
825 | 2, /* rightshift */ |
826 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
827 | 14, /* bitsize */ | |
828 | TRUE, /* pc_relative */ | |
829 | 0, /* bitpos */ | |
830 | complain_overflow_signed, /* complain_on_overflow */ | |
831 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 832 | AARCH64_R_STR (TSTBR14), /* name */ |
a06ea964 NC |
833 | FALSE, /* partial_inplace */ |
834 | 0x3fff, /* src_mask */ | |
835 | 0x3fff, /* dst_mask */ | |
836 | TRUE), /* pcrel_offset */ | |
837 | ||
838 | /* B.cond: ((S+A-P) >> 2) & 0x7ffff */ | |
a6bb11b2 | 839 | HOWTO (AARCH64_R (CONDBR19), /* type */ |
a06ea964 NC |
840 | 2, /* rightshift */ |
841 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
842 | 19, /* bitsize */ | |
843 | TRUE, /* pc_relative */ | |
844 | 0, /* bitpos */ | |
845 | complain_overflow_signed, /* complain_on_overflow */ | |
846 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 847 | AARCH64_R_STR (CONDBR19), /* name */ |
a06ea964 NC |
848 | FALSE, /* partial_inplace */ |
849 | 0x7ffff, /* src_mask */ | |
850 | 0x7ffff, /* dst_mask */ | |
851 | TRUE), /* pcrel_offset */ | |
852 | ||
a06ea964 | 853 | /* B: ((S+A-P) >> 2) & 0x3ffffff */ |
a6bb11b2 | 854 | HOWTO (AARCH64_R (JUMP26), /* type */ |
a06ea964 NC |
855 | 2, /* rightshift */ |
856 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
857 | 26, /* bitsize */ | |
858 | TRUE, /* pc_relative */ | |
859 | 0, /* bitpos */ | |
860 | complain_overflow_signed, /* complain_on_overflow */ | |
861 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 862 | AARCH64_R_STR (JUMP26), /* name */ |
a06ea964 NC |
863 | FALSE, /* partial_inplace */ |
864 | 0x3ffffff, /* src_mask */ | |
865 | 0x3ffffff, /* dst_mask */ | |
866 | TRUE), /* pcrel_offset */ | |
867 | ||
868 | /* BL: ((S+A-P) >> 2) & 0x3ffffff */ | |
a6bb11b2 | 869 | HOWTO (AARCH64_R (CALL26), /* type */ |
a06ea964 NC |
870 | 2, /* rightshift */ |
871 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
872 | 26, /* bitsize */ | |
873 | TRUE, /* pc_relative */ | |
874 | 0, /* bitpos */ | |
875 | complain_overflow_signed, /* complain_on_overflow */ | |
876 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 877 | AARCH64_R_STR (CALL26), /* name */ |
a06ea964 NC |
878 | FALSE, /* partial_inplace */ |
879 | 0x3ffffff, /* src_mask */ | |
880 | 0x3ffffff, /* dst_mask */ | |
881 | TRUE), /* pcrel_offset */ | |
882 | ||
883 | /* LD/ST16: (S+A) & 0xffe */ | |
a6bb11b2 | 884 | HOWTO (AARCH64_R (LDST16_ABS_LO12_NC), /* type */ |
a06ea964 NC |
885 | 1, /* rightshift */ |
886 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
887 | 12, /* bitsize */ | |
888 | FALSE, /* pc_relative */ | |
889 | 0, /* bitpos */ | |
890 | complain_overflow_dont, /* complain_on_overflow */ | |
891 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 892 | AARCH64_R_STR (LDST16_ABS_LO12_NC), /* name */ |
a06ea964 NC |
893 | FALSE, /* partial_inplace */ |
894 | 0xffe, /* src_mask */ | |
895 | 0xffe, /* dst_mask */ | |
896 | FALSE), /* pcrel_offset */ | |
897 | ||
898 | /* LD/ST32: (S+A) & 0xffc */ | |
a6bb11b2 | 899 | HOWTO (AARCH64_R (LDST32_ABS_LO12_NC), /* type */ |
a06ea964 NC |
900 | 2, /* rightshift */ |
901 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
902 | 12, /* bitsize */ | |
903 | FALSE, /* pc_relative */ | |
904 | 0, /* bitpos */ | |
905 | complain_overflow_dont, /* complain_on_overflow */ | |
906 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 907 | AARCH64_R_STR (LDST32_ABS_LO12_NC), /* name */ |
a06ea964 NC |
908 | FALSE, /* partial_inplace */ |
909 | 0xffc, /* src_mask */ | |
910 | 0xffc, /* dst_mask */ | |
911 | FALSE), /* pcrel_offset */ | |
912 | ||
913 | /* LD/ST64: (S+A) & 0xff8 */ | |
a6bb11b2 | 914 | HOWTO (AARCH64_R (LDST64_ABS_LO12_NC), /* type */ |
a06ea964 NC |
915 | 3, /* rightshift */ |
916 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
917 | 12, /* bitsize */ | |
918 | FALSE, /* pc_relative */ | |
919 | 0, /* bitpos */ | |
920 | complain_overflow_dont, /* complain_on_overflow */ | |
921 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 922 | AARCH64_R_STR (LDST64_ABS_LO12_NC), /* name */ |
a06ea964 NC |
923 | FALSE, /* partial_inplace */ |
924 | 0xff8, /* src_mask */ | |
925 | 0xff8, /* dst_mask */ | |
926 | FALSE), /* pcrel_offset */ | |
927 | ||
a06ea964 | 928 | /* LD/ST128: (S+A) & 0xff0 */ |
a6bb11b2 | 929 | HOWTO (AARCH64_R (LDST128_ABS_LO12_NC), /* type */ |
a06ea964 NC |
930 | 4, /* rightshift */ |
931 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
932 | 12, /* bitsize */ | |
933 | FALSE, /* pc_relative */ | |
934 | 0, /* bitpos */ | |
935 | complain_overflow_dont, /* complain_on_overflow */ | |
936 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 937 | AARCH64_R_STR (LDST128_ABS_LO12_NC), /* name */ |
a06ea964 NC |
938 | FALSE, /* partial_inplace */ |
939 | 0xff0, /* src_mask */ | |
940 | 0xff0, /* dst_mask */ | |
941 | FALSE), /* pcrel_offset */ | |
942 | ||
f41aef5f RE |
943 | /* Set a load-literal immediate field to bits |
944 | 0x1FFFFC of G(S)-P */ | |
a6bb11b2 | 945 | HOWTO (AARCH64_R (GOT_LD_PREL19), /* type */ |
f41aef5f RE |
946 | 2, /* rightshift */ |
947 | 2, /* size (0 = byte,1 = short,2 = long) */ | |
948 | 19, /* bitsize */ | |
949 | TRUE, /* pc_relative */ | |
950 | 0, /* bitpos */ | |
951 | complain_overflow_signed, /* complain_on_overflow */ | |
952 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 953 | AARCH64_R_STR (GOT_LD_PREL19), /* name */ |
f41aef5f RE |
954 | FALSE, /* partial_inplace */ |
955 | 0xffffe0, /* src_mask */ | |
956 | 0xffffe0, /* dst_mask */ | |
957 | TRUE), /* pcrel_offset */ | |
958 | ||
a06ea964 NC |
959 | /* Get to the page for the GOT entry for the symbol |
960 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 961 | HOWTO (AARCH64_R (ADR_GOT_PAGE), /* type */ |
a06ea964 NC |
962 | 12, /* rightshift */ |
963 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
964 | 21, /* bitsize */ | |
965 | TRUE, /* pc_relative */ | |
966 | 0, /* bitpos */ | |
967 | complain_overflow_dont, /* complain_on_overflow */ | |
968 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 969 | AARCH64_R_STR (ADR_GOT_PAGE), /* name */ |
a06ea964 NC |
970 | FALSE, /* partial_inplace */ |
971 | 0x1fffff, /* src_mask */ | |
972 | 0x1fffff, /* dst_mask */ | |
973 | TRUE), /* pcrel_offset */ | |
974 | ||
a6bb11b2 YZ |
975 | /* LD64: GOT offset G(S) & 0xff8 */ |
976 | HOWTO64 (AARCH64_R (LD64_GOT_LO12_NC), /* type */ | |
a06ea964 NC |
977 | 3, /* rightshift */ |
978 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
979 | 12, /* bitsize */ | |
980 | FALSE, /* pc_relative */ | |
981 | 0, /* bitpos */ | |
982 | complain_overflow_dont, /* complain_on_overflow */ | |
983 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 984 | AARCH64_R_STR (LD64_GOT_LO12_NC), /* name */ |
a06ea964 NC |
985 | FALSE, /* partial_inplace */ |
986 | 0xff8, /* src_mask */ | |
987 | 0xff8, /* dst_mask */ | |
a6bb11b2 | 988 | FALSE), /* pcrel_offset */ |
a06ea964 | 989 | |
a6bb11b2 YZ |
990 | /* LD32: GOT offset G(S) & 0xffc */ |
991 | HOWTO32 (AARCH64_R (LD32_GOT_LO12_NC), /* type */ | |
992 | 2, /* rightshift */ | |
993 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
994 | 12, /* bitsize */ | |
995 | FALSE, /* pc_relative */ | |
996 | 0, /* bitpos */ | |
997 | complain_overflow_dont, /* complain_on_overflow */ | |
998 | bfd_elf_generic_reloc, /* special_function */ | |
999 | AARCH64_R_STR (LD32_GOT_LO12_NC), /* name */ | |
1000 | FALSE, /* partial_inplace */ | |
1001 | 0xffc, /* src_mask */ | |
1002 | 0xffc, /* dst_mask */ | |
1003 | FALSE), /* pcrel_offset */ | |
a06ea964 | 1004 | |
ca632371 RL |
1005 | /* Lower 16 bits of GOT offset for the symbol. */ |
1006 | HOWTO64 (AARCH64_R (MOVW_GOTOFF_G0_NC), /* type */ | |
1007 | 0, /* rightshift */ | |
1008 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1009 | 16, /* bitsize */ | |
1010 | FALSE, /* pc_relative */ | |
1011 | 0, /* bitpos */ | |
1012 | complain_overflow_dont, /* complain_on_overflow */ | |
1013 | bfd_elf_generic_reloc, /* special_function */ | |
1014 | AARCH64_R_STR (MOVW_GOTOFF_G0_NC), /* name */ | |
1015 | FALSE, /* partial_inplace */ | |
1016 | 0xffff, /* src_mask */ | |
1017 | 0xffff, /* dst_mask */ | |
1018 | FALSE), /* pcrel_offset */ | |
1019 | ||
654248e7 RL |
1020 | /* Higher 16 bits of GOT offset for the symbol. */ |
1021 | HOWTO64 (AARCH64_R (MOVW_GOTOFF_G1), /* type */ | |
1022 | 16, /* rightshift */ | |
1023 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1024 | 16, /* bitsize */ | |
1025 | FALSE, /* pc_relative */ | |
1026 | 0, /* bitpos */ | |
1027 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1028 | bfd_elf_generic_reloc, /* special_function */ | |
1029 | AARCH64_R_STR (MOVW_GOTOFF_G1), /* name */ | |
1030 | FALSE, /* partial_inplace */ | |
1031 | 0xffff, /* src_mask */ | |
1032 | 0xffff, /* dst_mask */ | |
1033 | FALSE), /* pcrel_offset */ | |
1034 | ||
87f5fbcc RL |
1035 | /* LD64: GOT offset for the symbol. */ |
1036 | HOWTO64 (AARCH64_R (LD64_GOTOFF_LO15), /* type */ | |
1037 | 3, /* rightshift */ | |
1038 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1039 | 12, /* bitsize */ | |
1040 | FALSE, /* pc_relative */ | |
1041 | 0, /* bitpos */ | |
1042 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1043 | bfd_elf_generic_reloc, /* special_function */ | |
1044 | AARCH64_R_STR (LD64_GOTOFF_LO15), /* name */ | |
1045 | FALSE, /* partial_inplace */ | |
1046 | 0x7ff8, /* src_mask */ | |
1047 | 0x7ff8, /* dst_mask */ | |
1048 | FALSE), /* pcrel_offset */ | |
1049 | ||
3d715ce4 JW |
1050 | /* LD32: GOT offset to the page address of GOT table. |
1051 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x5ffc. */ | |
1052 | HOWTO32 (AARCH64_R (LD32_GOTPAGE_LO14), /* type */ | |
1053 | 2, /* rightshift */ | |
1054 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1055 | 12, /* bitsize */ | |
1056 | FALSE, /* pc_relative */ | |
1057 | 0, /* bitpos */ | |
1058 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1059 | bfd_elf_generic_reloc, /* special_function */ | |
1060 | AARCH64_R_STR (LD32_GOTPAGE_LO14), /* name */ | |
1061 | FALSE, /* partial_inplace */ | |
1062 | 0x5ffc, /* src_mask */ | |
1063 | 0x5ffc, /* dst_mask */ | |
1064 | FALSE), /* pcrel_offset */ | |
1065 | ||
a921b5bd JW |
1066 | /* LD64: GOT offset to the page address of GOT table. |
1067 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */ | |
1068 | HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15), /* type */ | |
1069 | 3, /* rightshift */ | |
1070 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1071 | 12, /* bitsize */ | |
1072 | FALSE, /* pc_relative */ | |
1073 | 0, /* bitpos */ | |
1074 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1075 | bfd_elf_generic_reloc, /* special_function */ | |
1076 | AARCH64_R_STR (LD64_GOTPAGE_LO15), /* name */ | |
1077 | FALSE, /* partial_inplace */ | |
1078 | 0x7ff8, /* src_mask */ | |
1079 | 0x7ff8, /* dst_mask */ | |
1080 | FALSE), /* pcrel_offset */ | |
1081 | ||
a06ea964 NC |
1082 | /* Get to the page for the GOT entry for the symbol |
1083 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 1084 | HOWTO (AARCH64_R (TLSGD_ADR_PAGE21), /* type */ |
a06ea964 NC |
1085 | 12, /* rightshift */ |
1086 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1087 | 21, /* bitsize */ | |
1088 | TRUE, /* pc_relative */ | |
1089 | 0, /* bitpos */ | |
1090 | complain_overflow_dont, /* complain_on_overflow */ | |
1091 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1092 | AARCH64_R_STR (TLSGD_ADR_PAGE21), /* name */ |
a06ea964 NC |
1093 | FALSE, /* partial_inplace */ |
1094 | 0x1fffff, /* src_mask */ | |
1095 | 0x1fffff, /* dst_mask */ | |
1096 | TRUE), /* pcrel_offset */ | |
1097 | ||
3c12b054 MS |
1098 | HOWTO (AARCH64_R (TLSGD_ADR_PREL21), /* type */ |
1099 | 0, /* rightshift */ | |
1100 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1101 | 21, /* bitsize */ | |
1102 | TRUE, /* pc_relative */ | |
1103 | 0, /* bitpos */ | |
1104 | complain_overflow_dont, /* complain_on_overflow */ | |
1105 | bfd_elf_generic_reloc, /* special_function */ | |
1106 | AARCH64_R_STR (TLSGD_ADR_PREL21), /* name */ | |
1107 | FALSE, /* partial_inplace */ | |
1108 | 0x1fffff, /* src_mask */ | |
1109 | 0x1fffff, /* dst_mask */ | |
1110 | TRUE), /* pcrel_offset */ | |
1111 | ||
a06ea964 | 1112 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ |
a6bb11b2 | 1113 | HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC), /* type */ |
a06ea964 NC |
1114 | 0, /* rightshift */ |
1115 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1116 | 12, /* bitsize */ | |
1117 | FALSE, /* pc_relative */ | |
1118 | 0, /* bitpos */ | |
1119 | complain_overflow_dont, /* complain_on_overflow */ | |
1120 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1121 | AARCH64_R_STR (TLSGD_ADD_LO12_NC), /* name */ |
a06ea964 NC |
1122 | FALSE, /* partial_inplace */ |
1123 | 0xfff, /* src_mask */ | |
1124 | 0xfff, /* dst_mask */ | |
1125 | FALSE), /* pcrel_offset */ | |
1126 | ||
3e8286c0 RL |
1127 | /* Lower 16 bits of GOT offset to tls_index. */ |
1128 | HOWTO64 (AARCH64_R (TLSGD_MOVW_G0_NC), /* type */ | |
1129 | 0, /* rightshift */ | |
1130 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1131 | 16, /* bitsize */ | |
1132 | FALSE, /* pc_relative */ | |
1133 | 0, /* bitpos */ | |
1134 | complain_overflow_dont, /* complain_on_overflow */ | |
1135 | bfd_elf_generic_reloc, /* special_function */ | |
1136 | AARCH64_R_STR (TLSGD_MOVW_G0_NC), /* name */ | |
1137 | FALSE, /* partial_inplace */ | |
1138 | 0xffff, /* src_mask */ | |
1139 | 0xffff, /* dst_mask */ | |
1140 | FALSE), /* pcrel_offset */ | |
1141 | ||
1aa66fb1 RL |
1142 | /* Higher 16 bits of GOT offset to tls_index. */ |
1143 | HOWTO64 (AARCH64_R (TLSGD_MOVW_G1), /* type */ | |
1144 | 16, /* rightshift */ | |
1145 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1146 | 16, /* bitsize */ | |
1147 | FALSE, /* pc_relative */ | |
1148 | 0, /* bitpos */ | |
1149 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1150 | bfd_elf_generic_reloc, /* special_function */ | |
1151 | AARCH64_R_STR (TLSGD_MOVW_G1), /* name */ | |
1152 | FALSE, /* partial_inplace */ | |
1153 | 0xffff, /* src_mask */ | |
1154 | 0xffff, /* dst_mask */ | |
1155 | FALSE), /* pcrel_offset */ | |
1156 | ||
a6bb11b2 | 1157 | HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21), /* type */ |
a06ea964 NC |
1158 | 12, /* rightshift */ |
1159 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1160 | 21, /* bitsize */ | |
1161 | FALSE, /* pc_relative */ | |
1162 | 0, /* bitpos */ | |
1163 | complain_overflow_dont, /* complain_on_overflow */ | |
1164 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1165 | AARCH64_R_STR (TLSIE_ADR_GOTTPREL_PAGE21), /* name */ |
a06ea964 NC |
1166 | FALSE, /* partial_inplace */ |
1167 | 0x1fffff, /* src_mask */ | |
1168 | 0x1fffff, /* dst_mask */ | |
1169 | FALSE), /* pcrel_offset */ | |
1170 | ||
a6bb11b2 | 1171 | HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC), /* type */ |
a06ea964 NC |
1172 | 3, /* rightshift */ |
1173 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1174 | 12, /* bitsize */ | |
1175 | FALSE, /* pc_relative */ | |
1176 | 0, /* bitpos */ | |
1177 | complain_overflow_dont, /* complain_on_overflow */ | |
1178 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1179 | AARCH64_R_STR (TLSIE_LD64_GOTTPREL_LO12_NC), /* name */ |
a06ea964 NC |
1180 | FALSE, /* partial_inplace */ |
1181 | 0xff8, /* src_mask */ | |
1182 | 0xff8, /* dst_mask */ | |
1183 | FALSE), /* pcrel_offset */ | |
1184 | ||
a6bb11b2 YZ |
1185 | HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC), /* type */ |
1186 | 2, /* rightshift */ | |
1187 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1188 | 12, /* bitsize */ | |
1189 | FALSE, /* pc_relative */ | |
1190 | 0, /* bitpos */ | |
1191 | complain_overflow_dont, /* complain_on_overflow */ | |
1192 | bfd_elf_generic_reloc, /* special_function */ | |
1193 | AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC), /* name */ | |
1194 | FALSE, /* partial_inplace */ | |
1195 | 0xffc, /* src_mask */ | |
1196 | 0xffc, /* dst_mask */ | |
1197 | FALSE), /* pcrel_offset */ | |
1198 | ||
1199 | HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19), /* type */ | |
bb3f9ed8 | 1200 | 2, /* rightshift */ |
a06ea964 | 1201 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
043bf05a | 1202 | 19, /* bitsize */ |
a06ea964 NC |
1203 | FALSE, /* pc_relative */ |
1204 | 0, /* bitpos */ | |
1205 | complain_overflow_dont, /* complain_on_overflow */ | |
1206 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1207 | AARCH64_R_STR (TLSIE_LD_GOTTPREL_PREL19), /* name */ |
a06ea964 NC |
1208 | FALSE, /* partial_inplace */ |
1209 | 0x1ffffc, /* src_mask */ | |
1210 | 0x1ffffc, /* dst_mask */ | |
1211 | FALSE), /* pcrel_offset */ | |
1212 | ||
3b957e5b RL |
1213 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */ |
1214 | 0, /* rightshift */ | |
1215 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1216 | 16, /* bitsize */ | |
1217 | FALSE, /* pc_relative */ | |
1218 | 0, /* bitpos */ | |
1219 | complain_overflow_dont, /* complain_on_overflow */ | |
1220 | bfd_elf_generic_reloc, /* special_function */ | |
1221 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC), /* name */ | |
1222 | FALSE, /* partial_inplace */ | |
1223 | 0xffff, /* src_mask */ | |
1224 | 0xffff, /* dst_mask */ | |
1225 | FALSE), /* pcrel_offset */ | |
1226 | ||
1227 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1), /* type */ | |
1228 | 16, /* rightshift */ | |
1229 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1230 | 16, /* bitsize */ | |
1231 | FALSE, /* pc_relative */ | |
1232 | 0, /* bitpos */ | |
1233 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1234 | bfd_elf_generic_reloc, /* special_function */ | |
1235 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1), /* name */ | |
1236 | FALSE, /* partial_inplace */ | |
1237 | 0xffff, /* src_mask */ | |
1238 | 0xffff, /* dst_mask */ | |
1239 | FALSE), /* pcrel_offset */ | |
1240 | ||
49df5539 JW |
1241 | /* ADD: bit[23:12] of byte offset to module TLS base address. */ |
1242 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_HI12), /* type */ | |
1243 | 12, /* rightshift */ | |
1244 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1245 | 12, /* bitsize */ | |
1246 | FALSE, /* pc_relative */ | |
1247 | 0, /* bitpos */ | |
1248 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1249 | bfd_elf_generic_reloc, /* special_function */ | |
1250 | AARCH64_R_STR (TLSLD_ADD_DTPREL_HI12), /* name */ | |
1251 | FALSE, /* partial_inplace */ | |
1252 | 0xfff, /* src_mask */ | |
1253 | 0xfff, /* dst_mask */ | |
1254 | FALSE), /* pcrel_offset */ | |
1255 | ||
70151fb5 JW |
1256 | /* Unsigned 12 bit byte offset to module TLS base address. */ |
1257 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12), /* type */ | |
1258 | 0, /* rightshift */ | |
1259 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1260 | 12, /* bitsize */ | |
1261 | FALSE, /* pc_relative */ | |
1262 | 0, /* bitpos */ | |
1263 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1264 | bfd_elf_generic_reloc, /* special_function */ | |
1265 | AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12), /* name */ | |
1266 | FALSE, /* partial_inplace */ | |
1267 | 0xfff, /* src_mask */ | |
1268 | 0xfff, /* dst_mask */ | |
1269 | FALSE), /* pcrel_offset */ | |
13289c10 JW |
1270 | |
1271 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12. */ | |
1272 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12_NC), /* type */ | |
1273 | 0, /* rightshift */ | |
1274 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1275 | 12, /* bitsize */ | |
1276 | FALSE, /* pc_relative */ | |
1277 | 0, /* bitpos */ | |
1278 | complain_overflow_dont, /* complain_on_overflow */ | |
1279 | bfd_elf_generic_reloc, /* special_function */ | |
1280 | AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12_NC), /* name */ | |
1281 | FALSE, /* partial_inplace */ | |
1282 | 0xfff, /* src_mask */ | |
1283 | 0xfff, /* dst_mask */ | |
1284 | FALSE), /* pcrel_offset */ | |
70151fb5 | 1285 | |
a12fad50 JW |
1286 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ |
1287 | HOWTO (AARCH64_R (TLSLD_ADD_LO12_NC), /* type */ | |
1288 | 0, /* rightshift */ | |
1289 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1290 | 12, /* bitsize */ | |
1291 | FALSE, /* pc_relative */ | |
1292 | 0, /* bitpos */ | |
1293 | complain_overflow_dont, /* complain_on_overflow */ | |
1294 | bfd_elf_generic_reloc, /* special_function */ | |
1295 | AARCH64_R_STR (TLSLD_ADD_LO12_NC), /* name */ | |
1296 | FALSE, /* partial_inplace */ | |
1297 | 0xfff, /* src_mask */ | |
1298 | 0xfff, /* dst_mask */ | |
1299 | FALSE), /* pcrel_offset */ | |
1300 | ||
1107e076 JW |
1301 | /* Get to the page for the GOT entry for the symbol |
1302 | (G(S) - P) using an ADRP instruction. */ | |
1303 | HOWTO (AARCH64_R (TLSLD_ADR_PAGE21), /* type */ | |
1304 | 12, /* rightshift */ | |
1305 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1306 | 21, /* bitsize */ | |
1307 | TRUE, /* pc_relative */ | |
1308 | 0, /* bitpos */ | |
1309 | complain_overflow_signed, /* complain_on_overflow */ | |
1310 | bfd_elf_generic_reloc, /* special_function */ | |
1311 | AARCH64_R_STR (TLSLD_ADR_PAGE21), /* name */ | |
1312 | FALSE, /* partial_inplace */ | |
1313 | 0x1fffff, /* src_mask */ | |
1314 | 0x1fffff, /* dst_mask */ | |
1315 | TRUE), /* pcrel_offset */ | |
1316 | ||
6c37fedc JW |
1317 | HOWTO (AARCH64_R (TLSLD_ADR_PREL21), /* type */ |
1318 | 0, /* rightshift */ | |
1319 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1320 | 21, /* bitsize */ | |
1321 | TRUE, /* pc_relative */ | |
1322 | 0, /* bitpos */ | |
1323 | complain_overflow_signed, /* complain_on_overflow */ | |
1324 | bfd_elf_generic_reloc, /* special_function */ | |
1325 | AARCH64_R_STR (TLSLD_ADR_PREL21), /* name */ | |
1326 | FALSE, /* partial_inplace */ | |
1327 | 0x1fffff, /* src_mask */ | |
1328 | 0x1fffff, /* dst_mask */ | |
1329 | TRUE), /* pcrel_offset */ | |
1330 | ||
4c562523 JW |
1331 | /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */ |
1332 | HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12), /* type */ | |
1333 | 1, /* rightshift */ | |
1334 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1335 | 11, /* bitsize */ | |
1336 | FALSE, /* pc_relative */ | |
1337 | 10, /* bitpos */ | |
1338 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1339 | bfd_elf_generic_reloc, /* special_function */ | |
1340 | AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12), /* name */ | |
1341 | FALSE, /* partial_inplace */ | |
1342 | 0x1ffc00, /* src_mask */ | |
1343 | 0x1ffc00, /* dst_mask */ | |
1344 | FALSE), /* pcrel_offset */ | |
1345 | ||
1346 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12, but no overflow check. */ | |
1347 | HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12_NC), /* type */ | |
1348 | 1, /* rightshift */ | |
1349 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1350 | 11, /* bitsize */ | |
1351 | FALSE, /* pc_relative */ | |
1352 | 10, /* bitpos */ | |
1353 | complain_overflow_dont, /* complain_on_overflow */ | |
1354 | bfd_elf_generic_reloc, /* special_function */ | |
1355 | AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12_NC), /* name */ | |
1356 | FALSE, /* partial_inplace */ | |
1357 | 0x1ffc00, /* src_mask */ | |
1358 | 0x1ffc00, /* dst_mask */ | |
1359 | FALSE), /* pcrel_offset */ | |
1360 | ||
1361 | /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */ | |
1362 | HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12), /* type */ | |
1363 | 2, /* rightshift */ | |
1364 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1365 | 10, /* bitsize */ | |
1366 | FALSE, /* pc_relative */ | |
1367 | 10, /* bitpos */ | |
1368 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1369 | bfd_elf_generic_reloc, /* special_function */ | |
1370 | AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12), /* name */ | |
1371 | FALSE, /* partial_inplace */ | |
1372 | 0x3ffc00, /* src_mask */ | |
1373 | 0x3ffc00, /* dst_mask */ | |
1374 | FALSE), /* pcrel_offset */ | |
1375 | ||
1376 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12, but no overflow check. */ | |
1377 | HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12_NC), /* type */ | |
1378 | 2, /* rightshift */ | |
1379 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1380 | 10, /* bitsize */ | |
1381 | FALSE, /* pc_relative */ | |
1382 | 10, /* bitpos */ | |
1383 | complain_overflow_dont, /* complain_on_overflow */ | |
1384 | bfd_elf_generic_reloc, /* special_function */ | |
1385 | AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12_NC), /* name */ | |
1386 | FALSE, /* partial_inplace */ | |
1387 | 0xffc00, /* src_mask */ | |
1388 | 0xffc00, /* dst_mask */ | |
1389 | FALSE), /* pcrel_offset */ | |
1390 | ||
1391 | /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */ | |
1392 | HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12), /* type */ | |
1393 | 3, /* rightshift */ | |
1394 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1395 | 9, /* bitsize */ | |
1396 | FALSE, /* pc_relative */ | |
1397 | 10, /* bitpos */ | |
1398 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1399 | bfd_elf_generic_reloc, /* special_function */ | |
1400 | AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12), /* name */ | |
1401 | FALSE, /* partial_inplace */ | |
1402 | 0x3ffc00, /* src_mask */ | |
1403 | 0x3ffc00, /* dst_mask */ | |
1404 | FALSE), /* pcrel_offset */ | |
1405 | ||
1406 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12, but no overflow check. */ | |
1407 | HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12_NC), /* type */ | |
1408 | 3, /* rightshift */ | |
1409 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1410 | 9, /* bitsize */ | |
1411 | FALSE, /* pc_relative */ | |
1412 | 10, /* bitpos */ | |
1413 | complain_overflow_dont, /* complain_on_overflow */ | |
1414 | bfd_elf_generic_reloc, /* special_function */ | |
1415 | AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12_NC), /* name */ | |
1416 | FALSE, /* partial_inplace */ | |
1417 | 0x7fc00, /* src_mask */ | |
1418 | 0x7fc00, /* dst_mask */ | |
1419 | FALSE), /* pcrel_offset */ | |
1420 | ||
1421 | /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */ | |
1422 | HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12), /* type */ | |
1423 | 0, /* rightshift */ | |
1424 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1425 | 12, /* bitsize */ | |
1426 | FALSE, /* pc_relative */ | |
1427 | 10, /* bitpos */ | |
1428 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1429 | bfd_elf_generic_reloc, /* special_function */ | |
1430 | AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12), /* name */ | |
1431 | FALSE, /* partial_inplace */ | |
1432 | 0x3ffc00, /* src_mask */ | |
1433 | 0x3ffc00, /* dst_mask */ | |
1434 | FALSE), /* pcrel_offset */ | |
1435 | ||
1436 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12, but no overflow check. */ | |
1437 | HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12_NC), /* type */ | |
1438 | 0, /* rightshift */ | |
1439 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1440 | 12, /* bitsize */ | |
1441 | FALSE, /* pc_relative */ | |
1442 | 10, /* bitpos */ | |
1443 | complain_overflow_dont, /* complain_on_overflow */ | |
1444 | bfd_elf_generic_reloc, /* special_function */ | |
1445 | AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12_NC), /* name */ | |
1446 | FALSE, /* partial_inplace */ | |
1447 | 0x3ffc00, /* src_mask */ | |
1448 | 0x3ffc00, /* dst_mask */ | |
1449 | FALSE), /* pcrel_offset */ | |
1450 | ||
49df5539 JW |
1451 | /* MOVZ: bit[15:0] of byte offset to module TLS base address. */ |
1452 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0), /* type */ | |
1453 | 0, /* rightshift */ | |
1454 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1455 | 16, /* bitsize */ | |
1456 | FALSE, /* pc_relative */ | |
1457 | 0, /* bitpos */ | |
1458 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1459 | bfd_elf_generic_reloc, /* special_function */ | |
1460 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0), /* name */ | |
1461 | FALSE, /* partial_inplace */ | |
1462 | 0xffff, /* src_mask */ | |
1463 | 0xffff, /* dst_mask */ | |
1464 | FALSE), /* pcrel_offset */ | |
1465 | ||
1466 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0. */ | |
1467 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0_NC), /* type */ | |
1468 | 0, /* rightshift */ | |
1469 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1470 | 16, /* bitsize */ | |
1471 | FALSE, /* pc_relative */ | |
1472 | 0, /* bitpos */ | |
1473 | complain_overflow_dont, /* complain_on_overflow */ | |
1474 | bfd_elf_generic_reloc, /* special_function */ | |
1475 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0_NC), /* name */ | |
1476 | FALSE, /* partial_inplace */ | |
1477 | 0xffff, /* src_mask */ | |
1478 | 0xffff, /* dst_mask */ | |
1479 | FALSE), /* pcrel_offset */ | |
1480 | ||
1481 | /* MOVZ: bit[31:16] of byte offset to module TLS base address. */ | |
1482 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G1), /* type */ | |
1483 | 16, /* rightshift */ | |
1484 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1485 | 16, /* bitsize */ | |
1486 | FALSE, /* pc_relative */ | |
1487 | 0, /* bitpos */ | |
1488 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1489 | bfd_elf_generic_reloc, /* special_function */ | |
1490 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1), /* name */ | |
1491 | FALSE, /* partial_inplace */ | |
1492 | 0xffff, /* src_mask */ | |
1493 | 0xffff, /* dst_mask */ | |
1494 | FALSE), /* pcrel_offset */ | |
1495 | ||
1496 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1. */ | |
1497 | HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G1_NC), /* type */ | |
1498 | 16, /* rightshift */ | |
1499 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1500 | 16, /* bitsize */ | |
1501 | FALSE, /* pc_relative */ | |
1502 | 0, /* bitpos */ | |
1503 | complain_overflow_dont, /* complain_on_overflow */ | |
1504 | bfd_elf_generic_reloc, /* special_function */ | |
1505 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1_NC), /* name */ | |
1506 | FALSE, /* partial_inplace */ | |
1507 | 0xffff, /* src_mask */ | |
1508 | 0xffff, /* dst_mask */ | |
1509 | FALSE), /* pcrel_offset */ | |
1510 | ||
1511 | /* MOVZ: bit[47:32] of byte offset to module TLS base address. */ | |
1512 | HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G2), /* type */ | |
1513 | 32, /* rightshift */ | |
1514 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1515 | 16, /* bitsize */ | |
1516 | FALSE, /* pc_relative */ | |
1517 | 0, /* bitpos */ | |
1518 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1519 | bfd_elf_generic_reloc, /* special_function */ | |
1520 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G2), /* name */ | |
1521 | FALSE, /* partial_inplace */ | |
1522 | 0xffff, /* src_mask */ | |
1523 | 0xffff, /* dst_mask */ | |
1524 | FALSE), /* pcrel_offset */ | |
1525 | ||
a6bb11b2 | 1526 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2), /* type */ |
bb3f9ed8 | 1527 | 32, /* rightshift */ |
a06ea964 | 1528 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1529 | 16, /* bitsize */ |
a06ea964 NC |
1530 | FALSE, /* pc_relative */ |
1531 | 0, /* bitpos */ | |
0172429c | 1532 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1533 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1534 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G2), /* name */ |
a06ea964 NC |
1535 | FALSE, /* partial_inplace */ |
1536 | 0xffff, /* src_mask */ | |
1537 | 0xffff, /* dst_mask */ | |
1538 | FALSE), /* pcrel_offset */ | |
1539 | ||
a6bb11b2 | 1540 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1), /* type */ |
bb3f9ed8 | 1541 | 16, /* rightshift */ |
a06ea964 | 1542 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1543 | 16, /* bitsize */ |
a06ea964 NC |
1544 | FALSE, /* pc_relative */ |
1545 | 0, /* bitpos */ | |
1546 | complain_overflow_dont, /* complain_on_overflow */ | |
1547 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1548 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1), /* name */ |
a06ea964 NC |
1549 | FALSE, /* partial_inplace */ |
1550 | 0xffff, /* src_mask */ | |
1551 | 0xffff, /* dst_mask */ | |
1552 | FALSE), /* pcrel_offset */ | |
1553 | ||
a6bb11b2 | 1554 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */ |
bb3f9ed8 | 1555 | 16, /* rightshift */ |
a06ea964 | 1556 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1557 | 16, /* bitsize */ |
a06ea964 NC |
1558 | FALSE, /* pc_relative */ |
1559 | 0, /* bitpos */ | |
1560 | complain_overflow_dont, /* complain_on_overflow */ | |
1561 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1562 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC), /* name */ |
a06ea964 NC |
1563 | FALSE, /* partial_inplace */ |
1564 | 0xffff, /* src_mask */ | |
1565 | 0xffff, /* dst_mask */ | |
1566 | FALSE), /* pcrel_offset */ | |
1567 | ||
a6bb11b2 | 1568 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0), /* type */ |
a06ea964 NC |
1569 | 0, /* rightshift */ |
1570 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
07875fbc | 1571 | 16, /* bitsize */ |
a06ea964 NC |
1572 | FALSE, /* pc_relative */ |
1573 | 0, /* bitpos */ | |
1574 | complain_overflow_dont, /* complain_on_overflow */ | |
1575 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1576 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0), /* name */ |
a06ea964 NC |
1577 | FALSE, /* partial_inplace */ |
1578 | 0xffff, /* src_mask */ | |
1579 | 0xffff, /* dst_mask */ | |
1580 | FALSE), /* pcrel_offset */ | |
1581 | ||
a6bb11b2 | 1582 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC), /* type */ |
a06ea964 NC |
1583 | 0, /* rightshift */ |
1584 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
07875fbc | 1585 | 16, /* bitsize */ |
a06ea964 NC |
1586 | FALSE, /* pc_relative */ |
1587 | 0, /* bitpos */ | |
1588 | complain_overflow_dont, /* complain_on_overflow */ | |
1589 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1590 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC), /* name */ |
a06ea964 NC |
1591 | FALSE, /* partial_inplace */ |
1592 | 0xffff, /* src_mask */ | |
1593 | 0xffff, /* dst_mask */ | |
1594 | FALSE), /* pcrel_offset */ | |
1595 | ||
a6bb11b2 | 1596 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12), /* type */ |
bb3f9ed8 | 1597 | 12, /* rightshift */ |
a06ea964 NC |
1598 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1599 | 12, /* bitsize */ | |
1600 | FALSE, /* pc_relative */ | |
1601 | 0, /* bitpos */ | |
bab91cce | 1602 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1603 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1604 | AARCH64_R_STR (TLSLE_ADD_TPREL_HI12), /* name */ |
a06ea964 NC |
1605 | FALSE, /* partial_inplace */ |
1606 | 0xfff, /* src_mask */ | |
1607 | 0xfff, /* dst_mask */ | |
1608 | FALSE), /* pcrel_offset */ | |
1609 | ||
a6bb11b2 | 1610 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12), /* type */ |
a06ea964 NC |
1611 | 0, /* rightshift */ |
1612 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1613 | 12, /* bitsize */ | |
1614 | FALSE, /* pc_relative */ | |
1615 | 0, /* bitpos */ | |
36e6c140 | 1616 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1617 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1618 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12), /* name */ |
a06ea964 NC |
1619 | FALSE, /* partial_inplace */ |
1620 | 0xfff, /* src_mask */ | |
1621 | 0xfff, /* dst_mask */ | |
1622 | FALSE), /* pcrel_offset */ | |
1623 | ||
a6bb11b2 | 1624 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC), /* type */ |
a06ea964 NC |
1625 | 0, /* rightshift */ |
1626 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1627 | 12, /* bitsize */ | |
1628 | FALSE, /* pc_relative */ | |
1629 | 0, /* bitpos */ | |
1630 | complain_overflow_dont, /* complain_on_overflow */ | |
1631 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1632 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC), /* name */ |
a06ea964 NC |
1633 | FALSE, /* partial_inplace */ |
1634 | 0xfff, /* src_mask */ | |
1635 | 0xfff, /* dst_mask */ | |
1636 | FALSE), /* pcrel_offset */ | |
a06ea964 | 1637 | |
a6bb11b2 | 1638 | HOWTO (AARCH64_R (TLSDESC_LD_PREL19), /* type */ |
bb3f9ed8 | 1639 | 2, /* rightshift */ |
a06ea964 | 1640 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1ada945d | 1641 | 19, /* bitsize */ |
a06ea964 NC |
1642 | TRUE, /* pc_relative */ |
1643 | 0, /* bitpos */ | |
1644 | complain_overflow_dont, /* complain_on_overflow */ | |
1645 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1646 | AARCH64_R_STR (TLSDESC_LD_PREL19), /* name */ |
a06ea964 | 1647 | FALSE, /* partial_inplace */ |
1ada945d MS |
1648 | 0x0ffffe0, /* src_mask */ |
1649 | 0x0ffffe0, /* dst_mask */ | |
a06ea964 NC |
1650 | TRUE), /* pcrel_offset */ |
1651 | ||
a6bb11b2 | 1652 | HOWTO (AARCH64_R (TLSDESC_ADR_PREL21), /* type */ |
a06ea964 NC |
1653 | 0, /* rightshift */ |
1654 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1655 | 21, /* bitsize */ | |
1656 | TRUE, /* pc_relative */ | |
1657 | 0, /* bitpos */ | |
1658 | complain_overflow_dont, /* complain_on_overflow */ | |
1659 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1660 | AARCH64_R_STR (TLSDESC_ADR_PREL21), /* name */ |
a06ea964 NC |
1661 | FALSE, /* partial_inplace */ |
1662 | 0x1fffff, /* src_mask */ | |
1663 | 0x1fffff, /* dst_mask */ | |
1664 | TRUE), /* pcrel_offset */ | |
1665 | ||
1666 | /* Get to the page for the GOT entry for the symbol | |
1667 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 1668 | HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21), /* type */ |
a06ea964 NC |
1669 | 12, /* rightshift */ |
1670 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1671 | 21, /* bitsize */ | |
1672 | TRUE, /* pc_relative */ | |
1673 | 0, /* bitpos */ | |
1674 | complain_overflow_dont, /* complain_on_overflow */ | |
1675 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1676 | AARCH64_R_STR (TLSDESC_ADR_PAGE21), /* name */ |
a06ea964 NC |
1677 | FALSE, /* partial_inplace */ |
1678 | 0x1fffff, /* src_mask */ | |
1679 | 0x1fffff, /* dst_mask */ | |
1680 | TRUE), /* pcrel_offset */ | |
1681 | ||
a6bb11b2 | 1682 | /* LD64: GOT offset G(S) & 0xff8. */ |
f955cccf | 1683 | HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12), /* type */ |
a06ea964 NC |
1684 | 3, /* rightshift */ |
1685 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1686 | 12, /* bitsize */ | |
1687 | FALSE, /* pc_relative */ | |
1688 | 0, /* bitpos */ | |
1689 | complain_overflow_dont, /* complain_on_overflow */ | |
1690 | bfd_elf_generic_reloc, /* special_function */ | |
f955cccf | 1691 | AARCH64_R_STR (TLSDESC_LD64_LO12), /* name */ |
a06ea964 | 1692 | FALSE, /* partial_inplace */ |
a6bb11b2 YZ |
1693 | 0xff8, /* src_mask */ |
1694 | 0xff8, /* dst_mask */ | |
1695 | FALSE), /* pcrel_offset */ | |
1696 | ||
1697 | /* LD32: GOT offset G(S) & 0xffc. */ | |
1698 | HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC), /* type */ | |
1699 | 2, /* rightshift */ | |
1700 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1701 | 12, /* bitsize */ | |
1702 | FALSE, /* pc_relative */ | |
1703 | 0, /* bitpos */ | |
1704 | complain_overflow_dont, /* complain_on_overflow */ | |
1705 | bfd_elf_generic_reloc, /* special_function */ | |
1706 | AARCH64_R_STR (TLSDESC_LD32_LO12_NC), /* name */ | |
1707 | FALSE, /* partial_inplace */ | |
1708 | 0xffc, /* src_mask */ | |
1709 | 0xffc, /* dst_mask */ | |
a06ea964 NC |
1710 | FALSE), /* pcrel_offset */ |
1711 | ||
1712 | /* ADD: GOT offset G(S) & 0xfff. */ | |
f955cccf | 1713 | HOWTO (AARCH64_R (TLSDESC_ADD_LO12), /* type */ |
a06ea964 NC |
1714 | 0, /* rightshift */ |
1715 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1716 | 12, /* bitsize */ | |
1717 | FALSE, /* pc_relative */ | |
1718 | 0, /* bitpos */ | |
f955cccf | 1719 | complain_overflow_dont,/* complain_on_overflow */ |
a06ea964 | 1720 | bfd_elf_generic_reloc, /* special_function */ |
f955cccf | 1721 | AARCH64_R_STR (TLSDESC_ADD_LO12), /* name */ |
a06ea964 NC |
1722 | FALSE, /* partial_inplace */ |
1723 | 0xfff, /* src_mask */ | |
1724 | 0xfff, /* dst_mask */ | |
1725 | FALSE), /* pcrel_offset */ | |
1726 | ||
a6bb11b2 | 1727 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G1), /* type */ |
bb3f9ed8 | 1728 | 16, /* rightshift */ |
a06ea964 NC |
1729 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1730 | 12, /* bitsize */ | |
1731 | FALSE, /* pc_relative */ | |
1732 | 0, /* bitpos */ | |
43a357f9 | 1733 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1734 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1735 | AARCH64_R_STR (TLSDESC_OFF_G1), /* name */ |
a06ea964 NC |
1736 | FALSE, /* partial_inplace */ |
1737 | 0xffff, /* src_mask */ | |
1738 | 0xffff, /* dst_mask */ | |
1739 | FALSE), /* pcrel_offset */ | |
1740 | ||
a6bb11b2 | 1741 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC), /* type */ |
a06ea964 NC |
1742 | 0, /* rightshift */ |
1743 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1744 | 12, /* bitsize */ | |
1745 | FALSE, /* pc_relative */ | |
1746 | 0, /* bitpos */ | |
1747 | complain_overflow_dont, /* complain_on_overflow */ | |
1748 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1749 | AARCH64_R_STR (TLSDESC_OFF_G0_NC), /* name */ |
a06ea964 NC |
1750 | FALSE, /* partial_inplace */ |
1751 | 0xffff, /* src_mask */ | |
1752 | 0xffff, /* dst_mask */ | |
1753 | FALSE), /* pcrel_offset */ | |
1754 | ||
a6bb11b2 | 1755 | HOWTO64 (AARCH64_R (TLSDESC_LDR), /* type */ |
a06ea964 NC |
1756 | 0, /* rightshift */ |
1757 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1758 | 12, /* bitsize */ | |
1759 | FALSE, /* pc_relative */ | |
1760 | 0, /* bitpos */ | |
1761 | complain_overflow_dont, /* complain_on_overflow */ | |
1762 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1763 | AARCH64_R_STR (TLSDESC_LDR), /* name */ |
a06ea964 NC |
1764 | FALSE, /* partial_inplace */ |
1765 | 0x0, /* src_mask */ | |
1766 | 0x0, /* dst_mask */ | |
1767 | FALSE), /* pcrel_offset */ | |
1768 | ||
a6bb11b2 | 1769 | HOWTO64 (AARCH64_R (TLSDESC_ADD), /* type */ |
a06ea964 NC |
1770 | 0, /* rightshift */ |
1771 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1772 | 12, /* bitsize */ | |
1773 | FALSE, /* pc_relative */ | |
1774 | 0, /* bitpos */ | |
1775 | complain_overflow_dont, /* complain_on_overflow */ | |
1776 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1777 | AARCH64_R_STR (TLSDESC_ADD), /* name */ |
a06ea964 NC |
1778 | FALSE, /* partial_inplace */ |
1779 | 0x0, /* src_mask */ | |
1780 | 0x0, /* dst_mask */ | |
1781 | FALSE), /* pcrel_offset */ | |
1782 | ||
a6bb11b2 | 1783 | HOWTO (AARCH64_R (TLSDESC_CALL), /* type */ |
a06ea964 NC |
1784 | 0, /* rightshift */ |
1785 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
7366006f | 1786 | 0, /* bitsize */ |
a06ea964 NC |
1787 | FALSE, /* pc_relative */ |
1788 | 0, /* bitpos */ | |
1789 | complain_overflow_dont, /* complain_on_overflow */ | |
1790 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1791 | AARCH64_R_STR (TLSDESC_CALL), /* name */ |
a06ea964 NC |
1792 | FALSE, /* partial_inplace */ |
1793 | 0x0, /* src_mask */ | |
1794 | 0x0, /* dst_mask */ | |
1795 | FALSE), /* pcrel_offset */ | |
a6bb11b2 YZ |
1796 | |
1797 | HOWTO (AARCH64_R (COPY), /* type */ | |
1798 | 0, /* rightshift */ | |
1799 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1800 | 64, /* bitsize */ | |
1801 | FALSE, /* pc_relative */ | |
1802 | 0, /* bitpos */ | |
1803 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1804 | bfd_elf_generic_reloc, /* special_function */ | |
1805 | AARCH64_R_STR (COPY), /* name */ | |
1806 | TRUE, /* partial_inplace */ | |
1807 | 0xffffffff, /* src_mask */ | |
1808 | 0xffffffff, /* dst_mask */ | |
1809 | FALSE), /* pcrel_offset */ | |
1810 | ||
1811 | HOWTO (AARCH64_R (GLOB_DAT), /* type */ | |
1812 | 0, /* rightshift */ | |
1813 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1814 | 64, /* bitsize */ | |
1815 | FALSE, /* pc_relative */ | |
1816 | 0, /* bitpos */ | |
1817 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1818 | bfd_elf_generic_reloc, /* special_function */ | |
1819 | AARCH64_R_STR (GLOB_DAT), /* name */ | |
1820 | TRUE, /* partial_inplace */ | |
1821 | 0xffffffff, /* src_mask */ | |
1822 | 0xffffffff, /* dst_mask */ | |
1823 | FALSE), /* pcrel_offset */ | |
1824 | ||
1825 | HOWTO (AARCH64_R (JUMP_SLOT), /* type */ | |
1826 | 0, /* rightshift */ | |
1827 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1828 | 64, /* bitsize */ | |
1829 | FALSE, /* pc_relative */ | |
1830 | 0, /* bitpos */ | |
1831 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1832 | bfd_elf_generic_reloc, /* special_function */ | |
1833 | AARCH64_R_STR (JUMP_SLOT), /* name */ | |
1834 | TRUE, /* partial_inplace */ | |
1835 | 0xffffffff, /* src_mask */ | |
1836 | 0xffffffff, /* dst_mask */ | |
1837 | FALSE), /* pcrel_offset */ | |
1838 | ||
1839 | HOWTO (AARCH64_R (RELATIVE), /* type */ | |
1840 | 0, /* rightshift */ | |
1841 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1842 | 64, /* bitsize */ | |
1843 | FALSE, /* pc_relative */ | |
1844 | 0, /* bitpos */ | |
1845 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1846 | bfd_elf_generic_reloc, /* special_function */ | |
1847 | AARCH64_R_STR (RELATIVE), /* name */ | |
1848 | TRUE, /* partial_inplace */ | |
1849 | ALL_ONES, /* src_mask */ | |
1850 | ALL_ONES, /* dst_mask */ | |
1851 | FALSE), /* pcrel_offset */ | |
1852 | ||
1853 | HOWTO (AARCH64_R (TLS_DTPMOD), /* type */ | |
1854 | 0, /* rightshift */ | |
1855 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1856 | 64, /* bitsize */ | |
1857 | FALSE, /* pc_relative */ | |
1858 | 0, /* bitpos */ | |
1859 | complain_overflow_dont, /* complain_on_overflow */ | |
1860 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
1861 | #if ARCH_SIZE == 64 |
1862 | AARCH64_R_STR (TLS_DTPMOD64), /* name */ | |
1863 | #else | |
a6bb11b2 | 1864 | AARCH64_R_STR (TLS_DTPMOD), /* name */ |
da0781dc | 1865 | #endif |
a6bb11b2 YZ |
1866 | FALSE, /* partial_inplace */ |
1867 | 0, /* src_mask */ | |
1868 | ALL_ONES, /* dst_mask */ | |
1869 | FALSE), /* pc_reloffset */ | |
1870 | ||
1871 | HOWTO (AARCH64_R (TLS_DTPREL), /* type */ | |
1872 | 0, /* rightshift */ | |
1873 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1874 | 64, /* bitsize */ | |
1875 | FALSE, /* pc_relative */ | |
1876 | 0, /* bitpos */ | |
1877 | complain_overflow_dont, /* complain_on_overflow */ | |
1878 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
1879 | #if ARCH_SIZE == 64 |
1880 | AARCH64_R_STR (TLS_DTPREL64), /* name */ | |
1881 | #else | |
a6bb11b2 | 1882 | AARCH64_R_STR (TLS_DTPREL), /* name */ |
da0781dc | 1883 | #endif |
a6bb11b2 YZ |
1884 | FALSE, /* partial_inplace */ |
1885 | 0, /* src_mask */ | |
1886 | ALL_ONES, /* dst_mask */ | |
1887 | FALSE), /* pcrel_offset */ | |
1888 | ||
1889 | HOWTO (AARCH64_R (TLS_TPREL), /* type */ | |
1890 | 0, /* rightshift */ | |
1891 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1892 | 64, /* bitsize */ | |
1893 | FALSE, /* pc_relative */ | |
1894 | 0, /* bitpos */ | |
1895 | complain_overflow_dont, /* complain_on_overflow */ | |
1896 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
1897 | #if ARCH_SIZE == 64 |
1898 | AARCH64_R_STR (TLS_TPREL64), /* name */ | |
1899 | #else | |
a6bb11b2 | 1900 | AARCH64_R_STR (TLS_TPREL), /* name */ |
da0781dc | 1901 | #endif |
a6bb11b2 YZ |
1902 | FALSE, /* partial_inplace */ |
1903 | 0, /* src_mask */ | |
1904 | ALL_ONES, /* dst_mask */ | |
1905 | FALSE), /* pcrel_offset */ | |
1906 | ||
1907 | HOWTO (AARCH64_R (TLSDESC), /* type */ | |
1908 | 0, /* rightshift */ | |
1909 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1910 | 64, /* bitsize */ | |
1911 | FALSE, /* pc_relative */ | |
1912 | 0, /* bitpos */ | |
1913 | complain_overflow_dont, /* complain_on_overflow */ | |
1914 | bfd_elf_generic_reloc, /* special_function */ | |
1915 | AARCH64_R_STR (TLSDESC), /* name */ | |
1916 | FALSE, /* partial_inplace */ | |
1917 | 0, /* src_mask */ | |
1918 | ALL_ONES, /* dst_mask */ | |
1919 | FALSE), /* pcrel_offset */ | |
1920 | ||
1921 | HOWTO (AARCH64_R (IRELATIVE), /* type */ | |
1922 | 0, /* rightshift */ | |
1923 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1924 | 64, /* bitsize */ | |
1925 | FALSE, /* pc_relative */ | |
1926 | 0, /* bitpos */ | |
1927 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1928 | bfd_elf_generic_reloc, /* special_function */ | |
1929 | AARCH64_R_STR (IRELATIVE), /* name */ | |
1930 | FALSE, /* partial_inplace */ | |
1931 | 0, /* src_mask */ | |
1932 | ALL_ONES, /* dst_mask */ | |
1933 | FALSE), /* pcrel_offset */ | |
1934 | ||
1935 | EMPTY_HOWTO (0), | |
a06ea964 NC |
1936 | }; |
1937 | ||
a6bb11b2 YZ |
1938 | static reloc_howto_type elfNN_aarch64_howto_none = |
1939 | HOWTO (R_AARCH64_NONE, /* type */ | |
1940 | 0, /* rightshift */ | |
6346d5ca | 1941 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a6bb11b2 YZ |
1942 | 0, /* bitsize */ |
1943 | FALSE, /* pc_relative */ | |
1944 | 0, /* bitpos */ | |
1945 | complain_overflow_dont,/* complain_on_overflow */ | |
1946 | bfd_elf_generic_reloc, /* special_function */ | |
1947 | "R_AARCH64_NONE", /* name */ | |
1948 | FALSE, /* partial_inplace */ | |
1949 | 0, /* src_mask */ | |
1950 | 0, /* dst_mask */ | |
1951 | FALSE); /* pcrel_offset */ | |
1952 | ||
1953 | /* Given HOWTO, return the bfd internal relocation enumerator. */ | |
1954 | ||
1955 | static bfd_reloc_code_real_type | |
1956 | elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type *howto) | |
1957 | { | |
1958 | const int size | |
1959 | = (int) ARRAY_SIZE (elfNN_aarch64_howto_table); | |
1960 | const ptrdiff_t offset | |
1961 | = howto - elfNN_aarch64_howto_table; | |
1962 | ||
1963 | if (offset > 0 && offset < size - 1) | |
1964 | return BFD_RELOC_AARCH64_RELOC_START + offset; | |
1965 | ||
1966 | if (howto == &elfNN_aarch64_howto_none) | |
1967 | return BFD_RELOC_AARCH64_NONE; | |
1968 | ||
1969 | return BFD_RELOC_AARCH64_RELOC_START; | |
1970 | } | |
1971 | ||
1972 | /* Given R_TYPE, return the bfd internal relocation enumerator. */ | |
1973 | ||
1974 | static bfd_reloc_code_real_type | |
0aa13fee | 1975 | elfNN_aarch64_bfd_reloc_from_type (bfd *abfd, unsigned int r_type) |
a6bb11b2 YZ |
1976 | { |
1977 | static bfd_boolean initialized_p = FALSE; | |
1978 | /* Indexed by R_TYPE, values are offsets in the howto_table. */ | |
1979 | static unsigned int offsets[R_AARCH64_end]; | |
1980 | ||
535b785f | 1981 | if (!initialized_p) |
a6bb11b2 YZ |
1982 | { |
1983 | unsigned int i; | |
1984 | ||
1985 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) | |
1986 | if (elfNN_aarch64_howto_table[i].type != 0) | |
1987 | offsets[elfNN_aarch64_howto_table[i].type] = i; | |
1988 | ||
1989 | initialized_p = TRUE; | |
1990 | } | |
1991 | ||
1992 | if (r_type == R_AARCH64_NONE || r_type == R_AARCH64_NULL) | |
1993 | return BFD_RELOC_AARCH64_NONE; | |
1994 | ||
5860e3f8 NC |
1995 | /* PR 17512: file: b371e70a. */ |
1996 | if (r_type >= R_AARCH64_end) | |
1997 | { | |
0aa13fee AM |
1998 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
1999 | abfd, r_type); | |
5860e3f8 NC |
2000 | bfd_set_error (bfd_error_bad_value); |
2001 | return BFD_RELOC_AARCH64_NONE; | |
2002 | } | |
2003 | ||
a6bb11b2 YZ |
2004 | return BFD_RELOC_AARCH64_RELOC_START + offsets[r_type]; |
2005 | } | |
2006 | ||
2007 | struct elf_aarch64_reloc_map | |
2008 | { | |
2009 | bfd_reloc_code_real_type from; | |
2010 | bfd_reloc_code_real_type to; | |
2011 | }; | |
2012 | ||
2013 | /* Map bfd generic reloc to AArch64-specific reloc. */ | |
2014 | static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map[] = | |
2015 | { | |
2016 | {BFD_RELOC_NONE, BFD_RELOC_AARCH64_NONE}, | |
2017 | ||
2018 | /* Basic data relocations. */ | |
2019 | {BFD_RELOC_CTOR, BFD_RELOC_AARCH64_NN}, | |
2020 | {BFD_RELOC_64, BFD_RELOC_AARCH64_64}, | |
2021 | {BFD_RELOC_32, BFD_RELOC_AARCH64_32}, | |
2022 | {BFD_RELOC_16, BFD_RELOC_AARCH64_16}, | |
2023 | {BFD_RELOC_64_PCREL, BFD_RELOC_AARCH64_64_PCREL}, | |
2024 | {BFD_RELOC_32_PCREL, BFD_RELOC_AARCH64_32_PCREL}, | |
2025 | {BFD_RELOC_16_PCREL, BFD_RELOC_AARCH64_16_PCREL}, | |
2026 | }; | |
2027 | ||
2028 | /* Given the bfd internal relocation enumerator in CODE, return the | |
2029 | corresponding howto entry. */ | |
2030 | ||
2031 | static reloc_howto_type * | |
2032 | elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code) | |
2033 | { | |
2034 | unsigned int i; | |
2035 | ||
2036 | /* Convert bfd generic reloc to AArch64-specific reloc. */ | |
2037 | if (code < BFD_RELOC_AARCH64_RELOC_START | |
2038 | || code > BFD_RELOC_AARCH64_RELOC_END) | |
2039 | for (i = 0; i < ARRAY_SIZE (elf_aarch64_reloc_map); i++) | |
2040 | if (elf_aarch64_reloc_map[i].from == code) | |
2041 | { | |
2042 | code = elf_aarch64_reloc_map[i].to; | |
2043 | break; | |
2044 | } | |
2045 | ||
2046 | if (code > BFD_RELOC_AARCH64_RELOC_START | |
2047 | && code < BFD_RELOC_AARCH64_RELOC_END) | |
2048 | if (elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START].type) | |
2049 | return &elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START]; | |
2050 | ||
54757ed1 AP |
2051 | if (code == BFD_RELOC_AARCH64_NONE) |
2052 | return &elfNN_aarch64_howto_none; | |
2053 | ||
a6bb11b2 YZ |
2054 | return NULL; |
2055 | } | |
2056 | ||
a06ea964 | 2057 | static reloc_howto_type * |
0aa13fee | 2058 | elfNN_aarch64_howto_from_type (bfd *abfd, unsigned int r_type) |
a06ea964 | 2059 | { |
a6bb11b2 YZ |
2060 | bfd_reloc_code_real_type val; |
2061 | reloc_howto_type *howto; | |
2062 | ||
cec5225b YZ |
2063 | #if ARCH_SIZE == 32 |
2064 | if (r_type > 256) | |
2065 | { | |
2066 | bfd_set_error (bfd_error_bad_value); | |
2067 | return NULL; | |
2068 | } | |
2069 | #endif | |
2070 | ||
a6bb11b2 YZ |
2071 | if (r_type == R_AARCH64_NONE) |
2072 | return &elfNN_aarch64_howto_none; | |
a06ea964 | 2073 | |
0aa13fee | 2074 | val = elfNN_aarch64_bfd_reloc_from_type (abfd, r_type); |
a6bb11b2 | 2075 | howto = elfNN_aarch64_howto_from_bfd_reloc (val); |
a06ea964 | 2076 | |
a6bb11b2 YZ |
2077 | if (howto != NULL) |
2078 | return howto; | |
a06ea964 | 2079 | |
a06ea964 NC |
2080 | bfd_set_error (bfd_error_bad_value); |
2081 | return NULL; | |
2082 | } | |
2083 | ||
f3185997 | 2084 | static bfd_boolean |
0aa13fee | 2085 | elfNN_aarch64_info_to_howto (bfd *abfd, arelent *bfd_reloc, |
a06ea964 NC |
2086 | Elf_Internal_Rela *elf_reloc) |
2087 | { | |
2088 | unsigned int r_type; | |
2089 | ||
cec5225b | 2090 | r_type = ELFNN_R_TYPE (elf_reloc->r_info); |
0aa13fee | 2091 | bfd_reloc->howto = elfNN_aarch64_howto_from_type (abfd, r_type); |
f3185997 NC |
2092 | |
2093 | if (bfd_reloc->howto == NULL) | |
2094 | { | |
2095 | /* xgettext:c-format */ | |
2096 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, r_type); | |
2097 | return FALSE; | |
2098 | } | |
2099 | return TRUE; | |
a06ea964 NC |
2100 | } |
2101 | ||
a06ea964 | 2102 | static reloc_howto_type * |
cec5225b | 2103 | elfNN_aarch64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
2104 | bfd_reloc_code_real_type code) |
2105 | { | |
a6bb11b2 | 2106 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (code); |
a06ea964 | 2107 | |
a6bb11b2 YZ |
2108 | if (howto != NULL) |
2109 | return howto; | |
a06ea964 NC |
2110 | |
2111 | bfd_set_error (bfd_error_bad_value); | |
2112 | return NULL; | |
2113 | } | |
2114 | ||
2115 | static reloc_howto_type * | |
cec5225b | 2116 | elfNN_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
2117 | const char *r_name) |
2118 | { | |
2119 | unsigned int i; | |
2120 | ||
a6bb11b2 YZ |
2121 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) |
2122 | if (elfNN_aarch64_howto_table[i].name != NULL | |
2123 | && strcasecmp (elfNN_aarch64_howto_table[i].name, r_name) == 0) | |
2124 | return &elfNN_aarch64_howto_table[i]; | |
a06ea964 NC |
2125 | |
2126 | return NULL; | |
2127 | } | |
2128 | ||
07d6d2b8 AM |
2129 | #define TARGET_LITTLE_SYM aarch64_elfNN_le_vec |
2130 | #define TARGET_LITTLE_NAME "elfNN-littleaarch64" | |
2131 | #define TARGET_BIG_SYM aarch64_elfNN_be_vec | |
2132 | #define TARGET_BIG_NAME "elfNN-bigaarch64" | |
a06ea964 | 2133 | |
a06ea964 NC |
2134 | /* The linker script knows the section names for placement. |
2135 | The entry_names are used to do simple name mangling on the stubs. | |
2136 | Given a function name, and its type, the stub can be found. The | |
2137 | name can be changed. The only requirement is the %s be present. */ | |
2138 | #define STUB_ENTRY_NAME "__%s_veneer" | |
2139 | ||
2140 | /* The name of the dynamic interpreter. This is put in the .interp | |
2141 | section. */ | |
2142 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
2143 | ||
2144 | #define AARCH64_MAX_FWD_BRANCH_OFFSET \ | |
2145 | (((1 << 25) - 1) << 2) | |
2146 | #define AARCH64_MAX_BWD_BRANCH_OFFSET \ | |
2147 | (-((1 << 25) << 2)) | |
2148 | ||
2149 | #define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1) | |
2150 | #define AARCH64_MIN_ADRP_IMM (-(1 << 20)) | |
2151 | ||
2152 | static int | |
2153 | aarch64_valid_for_adrp_p (bfd_vma value, bfd_vma place) | |
2154 | { | |
2155 | bfd_signed_vma offset = (bfd_signed_vma) (PG (value) - PG (place)) >> 12; | |
2156 | return offset <= AARCH64_MAX_ADRP_IMM && offset >= AARCH64_MIN_ADRP_IMM; | |
2157 | } | |
2158 | ||
2159 | static int | |
2160 | aarch64_valid_branch_p (bfd_vma value, bfd_vma place) | |
2161 | { | |
2162 | bfd_signed_vma offset = (bfd_signed_vma) (value - place); | |
2163 | return (offset <= AARCH64_MAX_FWD_BRANCH_OFFSET | |
2164 | && offset >= AARCH64_MAX_BWD_BRANCH_OFFSET); | |
2165 | } | |
2166 | ||
2167 | static const uint32_t aarch64_adrp_branch_stub [] = | |
2168 | { | |
2169 | 0x90000010, /* adrp ip0, X */ | |
2170 | /* R_AARCH64_ADR_HI21_PCREL(X) */ | |
2171 | 0x91000210, /* add ip0, ip0, :lo12:X */ | |
2172 | /* R_AARCH64_ADD_ABS_LO12_NC(X) */ | |
2173 | 0xd61f0200, /* br ip0 */ | |
2174 | }; | |
2175 | ||
2176 | static const uint32_t aarch64_long_branch_stub[] = | |
2177 | { | |
cec5225b | 2178 | #if ARCH_SIZE == 64 |
a06ea964 | 2179 | 0x58000090, /* ldr ip0, 1f */ |
cec5225b YZ |
2180 | #else |
2181 | 0x18000090, /* ldr wip0, 1f */ | |
2182 | #endif | |
a06ea964 NC |
2183 | 0x10000011, /* adr ip1, #0 */ |
2184 | 0x8b110210, /* add ip0, ip0, ip1 */ | |
2185 | 0xd61f0200, /* br ip0 */ | |
cec5225b YZ |
2186 | 0x00000000, /* 1: .xword or .word |
2187 | R_AARCH64_PRELNN(X) + 12 | |
a06ea964 NC |
2188 | */ |
2189 | 0x00000000, | |
2190 | }; | |
2191 | ||
68fcca92 JW |
2192 | static const uint32_t aarch64_erratum_835769_stub[] = |
2193 | { | |
2194 | 0x00000000, /* Placeholder for multiply accumulate. */ | |
2195 | 0x14000000, /* b <label> */ | |
2196 | }; | |
2197 | ||
4106101c MS |
2198 | static const uint32_t aarch64_erratum_843419_stub[] = |
2199 | { | |
2200 | 0x00000000, /* Placeholder for LDR instruction. */ | |
2201 | 0x14000000, /* b <label> */ | |
2202 | }; | |
2203 | ||
a06ea964 NC |
2204 | /* Section name for stubs is the associated section name plus this |
2205 | string. */ | |
2206 | #define STUB_SUFFIX ".stub" | |
2207 | ||
cec5225b | 2208 | enum elf_aarch64_stub_type |
a06ea964 NC |
2209 | { |
2210 | aarch64_stub_none, | |
2211 | aarch64_stub_adrp_branch, | |
2212 | aarch64_stub_long_branch, | |
68fcca92 | 2213 | aarch64_stub_erratum_835769_veneer, |
4106101c | 2214 | aarch64_stub_erratum_843419_veneer, |
a06ea964 NC |
2215 | }; |
2216 | ||
cec5225b | 2217 | struct elf_aarch64_stub_hash_entry |
a06ea964 NC |
2218 | { |
2219 | /* Base hash table entry structure. */ | |
2220 | struct bfd_hash_entry root; | |
2221 | ||
2222 | /* The stub section. */ | |
2223 | asection *stub_sec; | |
2224 | ||
2225 | /* Offset within stub_sec of the beginning of this stub. */ | |
2226 | bfd_vma stub_offset; | |
2227 | ||
2228 | /* Given the symbol's value and its section we can determine its final | |
2229 | value when building the stubs (so the stub knows where to jump). */ | |
2230 | bfd_vma target_value; | |
2231 | asection *target_section; | |
2232 | ||
cec5225b | 2233 | enum elf_aarch64_stub_type stub_type; |
a06ea964 NC |
2234 | |
2235 | /* The symbol table entry, if any, that this was derived from. */ | |
cec5225b | 2236 | struct elf_aarch64_link_hash_entry *h; |
a06ea964 NC |
2237 | |
2238 | /* Destination symbol type */ | |
2239 | unsigned char st_type; | |
2240 | ||
2241 | /* Where this stub is being called from, or, in the case of combined | |
2242 | stub sections, the first input section in the group. */ | |
2243 | asection *id_sec; | |
2244 | ||
2245 | /* The name for the local symbol at the start of this stub. The | |
2246 | stub name in the hash table has to be unique; this does not, so | |
2247 | it can be friendlier. */ | |
2248 | char *output_name; | |
68fcca92 JW |
2249 | |
2250 | /* The instruction which caused this stub to be generated (only valid for | |
2251 | erratum 835769 workaround stubs at present). */ | |
2252 | uint32_t veneered_insn; | |
4106101c MS |
2253 | |
2254 | /* In an erratum 843419 workaround stub, the ADRP instruction offset. */ | |
2255 | bfd_vma adrp_offset; | |
a06ea964 NC |
2256 | }; |
2257 | ||
2258 | /* Used to build a map of a section. This is required for mixed-endian | |
2259 | code/data. */ | |
2260 | ||
cec5225b | 2261 | typedef struct elf_elf_section_map |
a06ea964 NC |
2262 | { |
2263 | bfd_vma vma; | |
2264 | char type; | |
2265 | } | |
cec5225b | 2266 | elf_aarch64_section_map; |
a06ea964 NC |
2267 | |
2268 | ||
2269 | typedef struct _aarch64_elf_section_data | |
2270 | { | |
2271 | struct bfd_elf_section_data elf; | |
2272 | unsigned int mapcount; | |
2273 | unsigned int mapsize; | |
cec5225b | 2274 | elf_aarch64_section_map *map; |
a06ea964 NC |
2275 | } |
2276 | _aarch64_elf_section_data; | |
2277 | ||
cec5225b | 2278 | #define elf_aarch64_section_data(sec) \ |
a06ea964 NC |
2279 | ((_aarch64_elf_section_data *) elf_section_data (sec)) |
2280 | ||
4e8516b2 AP |
2281 | /* The size of the thread control block which is defined to be two pointers. */ |
2282 | #define TCB_SIZE (ARCH_SIZE/8)*2 | |
a06ea964 NC |
2283 | |
2284 | struct elf_aarch64_local_symbol | |
2285 | { | |
2286 | unsigned int got_type; | |
2287 | bfd_signed_vma got_refcount; | |
2288 | bfd_vma got_offset; | |
2289 | ||
2290 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The | |
2291 | offset is from the end of the jump table and reserved entries | |
2292 | within the PLTGOT. | |
2293 | ||
2294 | The magic value (bfd_vma) -1 indicates that an offset has not be | |
2295 | allocated. */ | |
2296 | bfd_vma tlsdesc_got_jump_table_offset; | |
2297 | }; | |
2298 | ||
2299 | struct elf_aarch64_obj_tdata | |
2300 | { | |
2301 | struct elf_obj_tdata root; | |
2302 | ||
2303 | /* local symbol descriptors */ | |
2304 | struct elf_aarch64_local_symbol *locals; | |
2305 | ||
2306 | /* Zero to warn when linking objects with incompatible enum sizes. */ | |
2307 | int no_enum_size_warning; | |
2308 | ||
2309 | /* Zero to warn when linking objects with incompatible wchar_t sizes. */ | |
2310 | int no_wchar_size_warning; | |
2311 | }; | |
2312 | ||
2313 | #define elf_aarch64_tdata(bfd) \ | |
2314 | ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any) | |
2315 | ||
cec5225b | 2316 | #define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals) |
a06ea964 NC |
2317 | |
2318 | #define is_aarch64_elf(bfd) \ | |
2319 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
2320 | && elf_tdata (bfd) != NULL \ | |
2321 | && elf_object_id (bfd) == AARCH64_ELF_DATA) | |
2322 | ||
2323 | static bfd_boolean | |
cec5225b | 2324 | elfNN_aarch64_mkobject (bfd *abfd) |
a06ea964 NC |
2325 | { |
2326 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_aarch64_obj_tdata), | |
2327 | AARCH64_ELF_DATA); | |
2328 | } | |
2329 | ||
cec5225b YZ |
2330 | #define elf_aarch64_hash_entry(ent) \ |
2331 | ((struct elf_aarch64_link_hash_entry *)(ent)) | |
a06ea964 NC |
2332 | |
2333 | #define GOT_UNKNOWN 0 | |
2334 | #define GOT_NORMAL 1 | |
2335 | #define GOT_TLS_GD 2 | |
2336 | #define GOT_TLS_IE 4 | |
2337 | #define GOT_TLSDESC_GD 8 | |
2338 | ||
2339 | #define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD)) | |
2340 | ||
2341 | /* AArch64 ELF linker hash entry. */ | |
cec5225b | 2342 | struct elf_aarch64_link_hash_entry |
a06ea964 NC |
2343 | { |
2344 | struct elf_link_hash_entry root; | |
2345 | ||
2346 | /* Track dynamic relocs copied for this symbol. */ | |
2347 | struct elf_dyn_relocs *dyn_relocs; | |
2348 | ||
a06ea964 NC |
2349 | /* Since PLT entries have variable size, we need to record the |
2350 | index into .got.plt instead of recomputing it from the PLT | |
2351 | offset. */ | |
2352 | bfd_signed_vma plt_got_offset; | |
2353 | ||
2354 | /* Bit mask representing the type of GOT entry(s) if any required by | |
2355 | this symbol. */ | |
2356 | unsigned int got_type; | |
2357 | ||
2358 | /* A pointer to the most recently used stub hash entry against this | |
2359 | symbol. */ | |
cec5225b | 2360 | struct elf_aarch64_stub_hash_entry *stub_cache; |
a06ea964 NC |
2361 | |
2362 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset | |
2363 | is from the end of the jump table and reserved entries within the PLTGOT. | |
2364 | ||
2365 | The magic value (bfd_vma) -1 indicates that an offset has not | |
2366 | be allocated. */ | |
2367 | bfd_vma tlsdesc_got_jump_table_offset; | |
2368 | }; | |
2369 | ||
2370 | static unsigned int | |
cec5225b | 2371 | elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry *h, |
a06ea964 NC |
2372 | bfd *abfd, |
2373 | unsigned long r_symndx) | |
2374 | { | |
2375 | if (h) | |
cec5225b | 2376 | return elf_aarch64_hash_entry (h)->got_type; |
a06ea964 | 2377 | |
cec5225b | 2378 | if (! elf_aarch64_locals (abfd)) |
a06ea964 NC |
2379 | return GOT_UNKNOWN; |
2380 | ||
cec5225b | 2381 | return elf_aarch64_locals (abfd)[r_symndx].got_type; |
a06ea964 NC |
2382 | } |
2383 | ||
a06ea964 | 2384 | /* Get the AArch64 elf linker hash table from a link_info structure. */ |
cec5225b YZ |
2385 | #define elf_aarch64_hash_table(info) \ |
2386 | ((struct elf_aarch64_link_hash_table *) ((info)->hash)) | |
a06ea964 NC |
2387 | |
2388 | #define aarch64_stub_hash_lookup(table, string, create, copy) \ | |
cec5225b | 2389 | ((struct elf_aarch64_stub_hash_entry *) \ |
a06ea964 NC |
2390 | bfd_hash_lookup ((table), (string), (create), (copy))) |
2391 | ||
2392 | /* AArch64 ELF linker hash table. */ | |
cec5225b | 2393 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
2394 | { |
2395 | /* The main hash table. */ | |
2396 | struct elf_link_hash_table root; | |
2397 | ||
2398 | /* Nonzero to force PIC branch veneers. */ | |
2399 | int pic_veneer; | |
2400 | ||
68fcca92 JW |
2401 | /* Fix erratum 835769. */ |
2402 | int fix_erratum_835769; | |
2403 | ||
4106101c MS |
2404 | /* Fix erratum 843419. */ |
2405 | int fix_erratum_843419; | |
2406 | ||
2407 | /* Enable ADRP->ADR rewrite for erratum 843419 workaround. */ | |
2408 | int fix_erratum_843419_adr; | |
2409 | ||
1f56df9d JW |
2410 | /* Don't apply link-time values for dynamic relocations. */ |
2411 | int no_apply_dynamic_relocs; | |
2412 | ||
a06ea964 NC |
2413 | /* The number of bytes in the initial entry in the PLT. */ |
2414 | bfd_size_type plt_header_size; | |
2415 | ||
2416 | /* The number of bytes in the subsequent PLT etries. */ | |
2417 | bfd_size_type plt_entry_size; | |
2418 | ||
a06ea964 NC |
2419 | /* Small local sym cache. */ |
2420 | struct sym_cache sym_cache; | |
2421 | ||
2422 | /* For convenience in allocate_dynrelocs. */ | |
2423 | bfd *obfd; | |
2424 | ||
2425 | /* The amount of space used by the reserved portion of the sgotplt | |
2426 | section, plus whatever space is used by the jump slots. */ | |
2427 | bfd_vma sgotplt_jump_table_size; | |
2428 | ||
2429 | /* The stub hash table. */ | |
2430 | struct bfd_hash_table stub_hash_table; | |
2431 | ||
2432 | /* Linker stub bfd. */ | |
2433 | bfd *stub_bfd; | |
2434 | ||
2435 | /* Linker call-backs. */ | |
2436 | asection *(*add_stub_section) (const char *, asection *); | |
2437 | void (*layout_sections_again) (void); | |
2438 | ||
2439 | /* Array to keep track of which stub sections have been created, and | |
2440 | information on stub grouping. */ | |
2441 | struct map_stub | |
2442 | { | |
2443 | /* This is the section to which stubs in the group will be | |
2444 | attached. */ | |
2445 | asection *link_sec; | |
2446 | /* The stub section. */ | |
2447 | asection *stub_sec; | |
2448 | } *stub_group; | |
2449 | ||
cec5225b | 2450 | /* Assorted information used by elfNN_aarch64_size_stubs. */ |
a06ea964 | 2451 | unsigned int bfd_count; |
7292b3ac | 2452 | unsigned int top_index; |
a06ea964 NC |
2453 | asection **input_list; |
2454 | ||
2455 | /* The offset into splt of the PLT entry for the TLS descriptor | |
2456 | resolver. Special values are 0, if not necessary (or not found | |
2457 | to be necessary yet), and -1 if needed but not determined | |
2458 | yet. */ | |
2459 | bfd_vma tlsdesc_plt; | |
2460 | ||
2461 | /* The GOT offset for the lazy trampoline. Communicated to the | |
2462 | loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1 | |
2463 | indicates an offset is not allocated. */ | |
2464 | bfd_vma dt_tlsdesc_got; | |
1419bbe5 WN |
2465 | |
2466 | /* Used by local STT_GNU_IFUNC symbols. */ | |
2467 | htab_t loc_hash_table; | |
2468 | void * loc_hash_memory; | |
a06ea964 NC |
2469 | }; |
2470 | ||
a06ea964 NC |
2471 | /* Create an entry in an AArch64 ELF linker hash table. */ |
2472 | ||
2473 | static struct bfd_hash_entry * | |
cec5225b | 2474 | elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry, |
a06ea964 NC |
2475 | struct bfd_hash_table *table, |
2476 | const char *string) | |
2477 | { | |
cec5225b YZ |
2478 | struct elf_aarch64_link_hash_entry *ret = |
2479 | (struct elf_aarch64_link_hash_entry *) entry; | |
a06ea964 NC |
2480 | |
2481 | /* Allocate the structure if it has not already been allocated by a | |
2482 | subclass. */ | |
2483 | if (ret == NULL) | |
2484 | ret = bfd_hash_allocate (table, | |
cec5225b | 2485 | sizeof (struct elf_aarch64_link_hash_entry)); |
a06ea964 NC |
2486 | if (ret == NULL) |
2487 | return (struct bfd_hash_entry *) ret; | |
2488 | ||
2489 | /* Call the allocation method of the superclass. */ | |
cec5225b | 2490 | ret = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
2491 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
2492 | table, string)); | |
2493 | if (ret != NULL) | |
2494 | { | |
2495 | ret->dyn_relocs = NULL; | |
a06ea964 NC |
2496 | ret->got_type = GOT_UNKNOWN; |
2497 | ret->plt_got_offset = (bfd_vma) - 1; | |
2498 | ret->stub_cache = NULL; | |
2499 | ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
2500 | } | |
2501 | ||
2502 | return (struct bfd_hash_entry *) ret; | |
2503 | } | |
2504 | ||
2505 | /* Initialize an entry in the stub hash table. */ | |
2506 | ||
2507 | static struct bfd_hash_entry * | |
2508 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
2509 | struct bfd_hash_table *table, const char *string) | |
2510 | { | |
2511 | /* Allocate the structure if it has not already been allocated by a | |
2512 | subclass. */ | |
2513 | if (entry == NULL) | |
2514 | { | |
2515 | entry = bfd_hash_allocate (table, | |
2516 | sizeof (struct | |
cec5225b | 2517 | elf_aarch64_stub_hash_entry)); |
a06ea964 NC |
2518 | if (entry == NULL) |
2519 | return entry; | |
2520 | } | |
2521 | ||
2522 | /* Call the allocation method of the superclass. */ | |
2523 | entry = bfd_hash_newfunc (entry, table, string); | |
2524 | if (entry != NULL) | |
2525 | { | |
cec5225b | 2526 | struct elf_aarch64_stub_hash_entry *eh; |
a06ea964 NC |
2527 | |
2528 | /* Initialize the local fields. */ | |
cec5225b | 2529 | eh = (struct elf_aarch64_stub_hash_entry *) entry; |
4106101c | 2530 | eh->adrp_offset = 0; |
a06ea964 NC |
2531 | eh->stub_sec = NULL; |
2532 | eh->stub_offset = 0; | |
2533 | eh->target_value = 0; | |
2534 | eh->target_section = NULL; | |
2535 | eh->stub_type = aarch64_stub_none; | |
2536 | eh->h = NULL; | |
2537 | eh->id_sec = NULL; | |
2538 | } | |
2539 | ||
2540 | return entry; | |
2541 | } | |
2542 | ||
1419bbe5 WN |
2543 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry |
2544 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
2545 | as global symbol. We reuse indx and dynstr_index for local symbol | |
2546 | hash since they aren't used by global symbols in this backend. */ | |
2547 | ||
2548 | static hashval_t | |
2549 | elfNN_aarch64_local_htab_hash (const void *ptr) | |
2550 | { | |
2551 | struct elf_link_hash_entry *h | |
2552 | = (struct elf_link_hash_entry *) ptr; | |
2553 | return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); | |
2554 | } | |
2555 | ||
2556 | /* Compare local hash entries. */ | |
2557 | ||
2558 | static int | |
2559 | elfNN_aarch64_local_htab_eq (const void *ptr1, const void *ptr2) | |
2560 | { | |
2561 | struct elf_link_hash_entry *h1 | |
2562 | = (struct elf_link_hash_entry *) ptr1; | |
2563 | struct elf_link_hash_entry *h2 | |
2564 | = (struct elf_link_hash_entry *) ptr2; | |
2565 | ||
2566 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
2567 | } | |
2568 | ||
2569 | /* Find and/or create a hash entry for local symbol. */ | |
2570 | ||
2571 | static struct elf_link_hash_entry * | |
2572 | elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table *htab, | |
2573 | bfd *abfd, const Elf_Internal_Rela *rel, | |
2574 | bfd_boolean create) | |
2575 | { | |
2576 | struct elf_aarch64_link_hash_entry e, *ret; | |
2577 | asection *sec = abfd->sections; | |
2578 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, | |
2579 | ELFNN_R_SYM (rel->r_info)); | |
2580 | void **slot; | |
2581 | ||
2582 | e.root.indx = sec->id; | |
2583 | e.root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2584 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, | |
2585 | create ? INSERT : NO_INSERT); | |
2586 | ||
2587 | if (!slot) | |
2588 | return NULL; | |
2589 | ||
2590 | if (*slot) | |
2591 | { | |
2592 | ret = (struct elf_aarch64_link_hash_entry *) *slot; | |
2593 | return &ret->root; | |
2594 | } | |
2595 | ||
2596 | ret = (struct elf_aarch64_link_hash_entry *) | |
2597 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, | |
2598 | sizeof (struct elf_aarch64_link_hash_entry)); | |
2599 | if (ret) | |
2600 | { | |
2601 | memset (ret, 0, sizeof (*ret)); | |
2602 | ret->root.indx = sec->id; | |
2603 | ret->root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2604 | ret->root.dynindx = -1; | |
2605 | *slot = ret; | |
2606 | } | |
2607 | return &ret->root; | |
2608 | } | |
a06ea964 NC |
2609 | |
2610 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
2611 | ||
2612 | static void | |
cec5225b | 2613 | elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info, |
a06ea964 NC |
2614 | struct elf_link_hash_entry *dir, |
2615 | struct elf_link_hash_entry *ind) | |
2616 | { | |
cec5225b | 2617 | struct elf_aarch64_link_hash_entry *edir, *eind; |
a06ea964 | 2618 | |
cec5225b YZ |
2619 | edir = (struct elf_aarch64_link_hash_entry *) dir; |
2620 | eind = (struct elf_aarch64_link_hash_entry *) ind; | |
a06ea964 NC |
2621 | |
2622 | if (eind->dyn_relocs != NULL) | |
2623 | { | |
2624 | if (edir->dyn_relocs != NULL) | |
2625 | { | |
2626 | struct elf_dyn_relocs **pp; | |
2627 | struct elf_dyn_relocs *p; | |
2628 | ||
2629 | /* Add reloc counts against the indirect sym to the direct sym | |
2630 | list. Merge any entries against the same section. */ | |
2631 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) | |
2632 | { | |
2633 | struct elf_dyn_relocs *q; | |
2634 | ||
2635 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
2636 | if (q->sec == p->sec) | |
2637 | { | |
2638 | q->pc_count += p->pc_count; | |
2639 | q->count += p->count; | |
2640 | *pp = p->next; | |
2641 | break; | |
2642 | } | |
2643 | if (q == NULL) | |
2644 | pp = &p->next; | |
2645 | } | |
2646 | *pp = edir->dyn_relocs; | |
2647 | } | |
2648 | ||
2649 | edir->dyn_relocs = eind->dyn_relocs; | |
2650 | eind->dyn_relocs = NULL; | |
2651 | } | |
2652 | ||
a06ea964 NC |
2653 | if (ind->root.type == bfd_link_hash_indirect) |
2654 | { | |
2655 | /* Copy over PLT info. */ | |
2656 | if (dir->got.refcount <= 0) | |
2657 | { | |
2658 | edir->got_type = eind->got_type; | |
2659 | eind->got_type = GOT_UNKNOWN; | |
2660 | } | |
2661 | } | |
2662 | ||
2663 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
2664 | } | |
2665 | ||
68faa637 AM |
2666 | /* Destroy an AArch64 elf linker hash table. */ |
2667 | ||
2668 | static void | |
d495ab0d | 2669 | elfNN_aarch64_link_hash_table_free (bfd *obfd) |
68faa637 AM |
2670 | { |
2671 | struct elf_aarch64_link_hash_table *ret | |
d495ab0d | 2672 | = (struct elf_aarch64_link_hash_table *) obfd->link.hash; |
68faa637 AM |
2673 | |
2674 | if (ret->loc_hash_table) | |
2675 | htab_delete (ret->loc_hash_table); | |
2676 | if (ret->loc_hash_memory) | |
2677 | objalloc_free ((struct objalloc *) ret->loc_hash_memory); | |
2678 | ||
2679 | bfd_hash_table_free (&ret->stub_hash_table); | |
d495ab0d | 2680 | _bfd_elf_link_hash_table_free (obfd); |
68faa637 AM |
2681 | } |
2682 | ||
a06ea964 NC |
2683 | /* Create an AArch64 elf linker hash table. */ |
2684 | ||
2685 | static struct bfd_link_hash_table * | |
cec5225b | 2686 | elfNN_aarch64_link_hash_table_create (bfd *abfd) |
a06ea964 | 2687 | { |
cec5225b YZ |
2688 | struct elf_aarch64_link_hash_table *ret; |
2689 | bfd_size_type amt = sizeof (struct elf_aarch64_link_hash_table); | |
a06ea964 | 2690 | |
7bf52ea2 | 2691 | ret = bfd_zmalloc (amt); |
a06ea964 NC |
2692 | if (ret == NULL) |
2693 | return NULL; | |
2694 | ||
2695 | if (!_bfd_elf_link_hash_table_init | |
cec5225b YZ |
2696 | (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc, |
2697 | sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA)) | |
a06ea964 NC |
2698 | { |
2699 | free (ret); | |
2700 | return NULL; | |
2701 | } | |
2702 | ||
a06ea964 NC |
2703 | ret->plt_header_size = PLT_ENTRY_SIZE; |
2704 | ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE; | |
a06ea964 | 2705 | ret->obfd = abfd; |
a06ea964 NC |
2706 | ret->dt_tlsdesc_got = (bfd_vma) - 1; |
2707 | ||
2708 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc, | |
cec5225b | 2709 | sizeof (struct elf_aarch64_stub_hash_entry))) |
a06ea964 | 2710 | { |
d495ab0d | 2711 | _bfd_elf_link_hash_table_free (abfd); |
a06ea964 NC |
2712 | return NULL; |
2713 | } | |
2714 | ||
1419bbe5 WN |
2715 | ret->loc_hash_table = htab_try_create (1024, |
2716 | elfNN_aarch64_local_htab_hash, | |
2717 | elfNN_aarch64_local_htab_eq, | |
2718 | NULL); | |
2719 | ret->loc_hash_memory = objalloc_create (); | |
2720 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
2721 | { | |
d495ab0d | 2722 | elfNN_aarch64_link_hash_table_free (abfd); |
1419bbe5 WN |
2723 | return NULL; |
2724 | } | |
d495ab0d | 2725 | ret->root.root.hash_table_free = elfNN_aarch64_link_hash_table_free; |
1419bbe5 | 2726 | |
a06ea964 NC |
2727 | return &ret->root.root; |
2728 | } | |
2729 | ||
1d75a8e2 NC |
2730 | /* Perform relocation R_TYPE. Returns TRUE upon success, FALSE otherwise. */ |
2731 | ||
a06ea964 NC |
2732 | static bfd_boolean |
2733 | aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section, | |
2734 | bfd_vma offset, bfd_vma value) | |
2735 | { | |
2736 | reloc_howto_type *howto; | |
2737 | bfd_vma place; | |
2738 | ||
0aa13fee | 2739 | howto = elfNN_aarch64_howto_from_type (input_bfd, r_type); |
a06ea964 NC |
2740 | place = (input_section->output_section->vma + input_section->output_offset |
2741 | + offset); | |
caed7120 | 2742 | |
0aa13fee | 2743 | r_type = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
caed7120 YZ |
2744 | value = _bfd_aarch64_elf_resolve_relocation (r_type, place, value, 0, FALSE); |
2745 | return _bfd_aarch64_elf_put_addend (input_bfd, | |
2746 | input_section->contents + offset, r_type, | |
1d75a8e2 | 2747 | howto, value) == bfd_reloc_ok; |
a06ea964 NC |
2748 | } |
2749 | ||
cec5225b | 2750 | static enum elf_aarch64_stub_type |
a06ea964 NC |
2751 | aarch64_select_branch_stub (bfd_vma value, bfd_vma place) |
2752 | { | |
2753 | if (aarch64_valid_for_adrp_p (value, place)) | |
2754 | return aarch64_stub_adrp_branch; | |
2755 | return aarch64_stub_long_branch; | |
2756 | } | |
2757 | ||
2758 | /* Determine the type of stub needed, if any, for a call. */ | |
2759 | ||
cec5225b | 2760 | static enum elf_aarch64_stub_type |
9a228467 | 2761 | aarch64_type_of_stub (asection *input_sec, |
a06ea964 | 2762 | const Elf_Internal_Rela *rel, |
f678ded7 | 2763 | asection *sym_sec, |
a06ea964 | 2764 | unsigned char st_type, |
a06ea964 NC |
2765 | bfd_vma destination) |
2766 | { | |
2767 | bfd_vma location; | |
2768 | bfd_signed_vma branch_offset; | |
2769 | unsigned int r_type; | |
cec5225b | 2770 | enum elf_aarch64_stub_type stub_type = aarch64_stub_none; |
a06ea964 | 2771 | |
f678ded7 | 2772 | if (st_type != STT_FUNC |
2f340668 | 2773 | && (sym_sec == input_sec)) |
a06ea964 NC |
2774 | return stub_type; |
2775 | ||
a06ea964 NC |
2776 | /* Determine where the call point is. */ |
2777 | location = (input_sec->output_offset | |
2778 | + input_sec->output_section->vma + rel->r_offset); | |
2779 | ||
2780 | branch_offset = (bfd_signed_vma) (destination - location); | |
2781 | ||
cec5225b | 2782 | r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
2783 | |
2784 | /* We don't want to redirect any old unconditional jump in this way, | |
2785 | only one which is being used for a sibcall, where it is | |
2786 | acceptable for the IP0 and IP1 registers to be clobbered. */ | |
a6bb11b2 | 2787 | if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26)) |
a06ea964 NC |
2788 | && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET |
2789 | || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET)) | |
2790 | { | |
2791 | stub_type = aarch64_stub_long_branch; | |
2792 | } | |
2793 | ||
2794 | return stub_type; | |
2795 | } | |
2796 | ||
2797 | /* Build a name for an entry in the stub hash table. */ | |
2798 | ||
2799 | static char * | |
cec5225b | 2800 | elfNN_aarch64_stub_name (const asection *input_section, |
a06ea964 | 2801 | const asection *sym_sec, |
cec5225b | 2802 | const struct elf_aarch64_link_hash_entry *hash, |
a06ea964 NC |
2803 | const Elf_Internal_Rela *rel) |
2804 | { | |
2805 | char *stub_name; | |
2806 | bfd_size_type len; | |
2807 | ||
2808 | if (hash) | |
2809 | { | |
2810 | len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1; | |
2811 | stub_name = bfd_malloc (len); | |
2812 | if (stub_name != NULL) | |
2813 | snprintf (stub_name, len, "%08x_%s+%" BFD_VMA_FMT "x", | |
2814 | (unsigned int) input_section->id, | |
2815 | hash->root.root.root.string, | |
2816 | rel->r_addend); | |
2817 | } | |
2818 | else | |
2819 | { | |
2820 | len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1; | |
2821 | stub_name = bfd_malloc (len); | |
2822 | if (stub_name != NULL) | |
2823 | snprintf (stub_name, len, "%08x_%x:%x+%" BFD_VMA_FMT "x", | |
2824 | (unsigned int) input_section->id, | |
2825 | (unsigned int) sym_sec->id, | |
cec5225b | 2826 | (unsigned int) ELFNN_R_SYM (rel->r_info), |
a06ea964 NC |
2827 | rel->r_addend); |
2828 | } | |
2829 | ||
2830 | return stub_name; | |
2831 | } | |
2832 | ||
7f784814 JW |
2833 | /* Return TRUE if symbol H should be hashed in the `.gnu.hash' section. For |
2834 | executable PLT slots where the executable never takes the address of those | |
2835 | functions, the function symbols are not added to the hash table. */ | |
2836 | ||
2837 | static bfd_boolean | |
2838 | elf_aarch64_hash_symbol (struct elf_link_hash_entry *h) | |
2839 | { | |
2840 | if (h->plt.offset != (bfd_vma) -1 | |
2841 | && !h->def_regular | |
2842 | && !h->pointer_equality_needed) | |
2843 | return FALSE; | |
2844 | ||
2845 | return _bfd_elf_hash_symbol (h); | |
2846 | } | |
2847 | ||
2848 | ||
a06ea964 NC |
2849 | /* Look up an entry in the stub hash. Stub entries are cached because |
2850 | creating the stub name takes a bit of time. */ | |
2851 | ||
cec5225b YZ |
2852 | static struct elf_aarch64_stub_hash_entry * |
2853 | elfNN_aarch64_get_stub_entry (const asection *input_section, | |
a06ea964 NC |
2854 | const asection *sym_sec, |
2855 | struct elf_link_hash_entry *hash, | |
2856 | const Elf_Internal_Rela *rel, | |
cec5225b | 2857 | struct elf_aarch64_link_hash_table *htab) |
a06ea964 | 2858 | { |
cec5225b YZ |
2859 | struct elf_aarch64_stub_hash_entry *stub_entry; |
2860 | struct elf_aarch64_link_hash_entry *h = | |
2861 | (struct elf_aarch64_link_hash_entry *) hash; | |
a06ea964 NC |
2862 | const asection *id_sec; |
2863 | ||
2864 | if ((input_section->flags & SEC_CODE) == 0) | |
2865 | return NULL; | |
2866 | ||
2867 | /* If this input section is part of a group of sections sharing one | |
2868 | stub section, then use the id of the first section in the group. | |
2869 | Stub names need to include a section id, as there may well be | |
2870 | more than one stub used to reach say, printf, and we need to | |
2871 | distinguish between them. */ | |
2872 | id_sec = htab->stub_group[input_section->id].link_sec; | |
2873 | ||
2874 | if (h != NULL && h->stub_cache != NULL | |
2875 | && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec) | |
2876 | { | |
2877 | stub_entry = h->stub_cache; | |
2878 | } | |
2879 | else | |
2880 | { | |
2881 | char *stub_name; | |
2882 | ||
cec5225b | 2883 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel); |
a06ea964 NC |
2884 | if (stub_name == NULL) |
2885 | return NULL; | |
2886 | ||
2887 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
2888 | stub_name, FALSE, FALSE); | |
2889 | if (h != NULL) | |
2890 | h->stub_cache = stub_entry; | |
2891 | ||
2892 | free (stub_name); | |
2893 | } | |
2894 | ||
2895 | return stub_entry; | |
2896 | } | |
2897 | ||
a06ea964 | 2898 | |
66585675 MS |
2899 | /* Create a stub section. */ |
2900 | ||
2901 | static asection * | |
2902 | _bfd_aarch64_create_stub_section (asection *section, | |
2903 | struct elf_aarch64_link_hash_table *htab) | |
2904 | { | |
2905 | size_t namelen; | |
2906 | bfd_size_type len; | |
2907 | char *s_name; | |
2908 | ||
2909 | namelen = strlen (section->name); | |
2910 | len = namelen + sizeof (STUB_SUFFIX); | |
2911 | s_name = bfd_alloc (htab->stub_bfd, len); | |
2912 | if (s_name == NULL) | |
2913 | return NULL; | |
2914 | ||
2915 | memcpy (s_name, section->name, namelen); | |
2916 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
2917 | return (*htab->add_stub_section) (s_name, section); | |
2918 | } | |
2919 | ||
2920 | ||
fc6d53be MS |
2921 | /* Find or create a stub section for a link section. |
2922 | ||
2923 | Fix or create the stub section used to collect stubs attached to | |
2924 | the specified link section. */ | |
2925 | ||
2926 | static asection * | |
2927 | _bfd_aarch64_get_stub_for_link_section (asection *link_section, | |
2928 | struct elf_aarch64_link_hash_table *htab) | |
2929 | { | |
2930 | if (htab->stub_group[link_section->id].stub_sec == NULL) | |
2931 | htab->stub_group[link_section->id].stub_sec | |
2932 | = _bfd_aarch64_create_stub_section (link_section, htab); | |
2933 | return htab->stub_group[link_section->id].stub_sec; | |
2934 | } | |
2935 | ||
2936 | ||
ef857521 MS |
2937 | /* Find or create a stub section in the stub group for an input |
2938 | section. */ | |
2939 | ||
2940 | static asection * | |
2941 | _bfd_aarch64_create_or_find_stub_sec (asection *section, | |
2942 | struct elf_aarch64_link_hash_table *htab) | |
a06ea964 | 2943 | { |
fc6d53be MS |
2944 | asection *link_sec = htab->stub_group[section->id].link_sec; |
2945 | return _bfd_aarch64_get_stub_for_link_section (link_sec, htab); | |
ef857521 MS |
2946 | } |
2947 | ||
2948 | ||
2949 | /* Add a new stub entry in the stub group associated with an input | |
2950 | section to the stub hash. Not all fields of the new stub entry are | |
2951 | initialised. */ | |
2952 | ||
2953 | static struct elf_aarch64_stub_hash_entry * | |
2954 | _bfd_aarch64_add_stub_entry_in_group (const char *stub_name, | |
2955 | asection *section, | |
2956 | struct elf_aarch64_link_hash_table *htab) | |
2957 | { | |
2958 | asection *link_sec; | |
2959 | asection *stub_sec; | |
2960 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
2961 | ||
2962 | link_sec = htab->stub_group[section->id].link_sec; | |
2963 | stub_sec = _bfd_aarch64_create_or_find_stub_sec (section, htab); | |
2964 | ||
a06ea964 NC |
2965 | /* Enter this entry into the linker stub hash table. */ |
2966 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
2967 | TRUE, FALSE); | |
2968 | if (stub_entry == NULL) | |
2969 | { | |
695344c0 | 2970 | /* xgettext:c-format */ |
871b3ab2 | 2971 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
4eca0228 | 2972 | section->owner, stub_name); |
a06ea964 NC |
2973 | return NULL; |
2974 | } | |
2975 | ||
2976 | stub_entry->stub_sec = stub_sec; | |
2977 | stub_entry->stub_offset = 0; | |
2978 | stub_entry->id_sec = link_sec; | |
2979 | ||
2980 | return stub_entry; | |
2981 | } | |
2982 | ||
4106101c MS |
2983 | /* Add a new stub entry in the final stub section to the stub hash. |
2984 | Not all fields of the new stub entry are initialised. */ | |
2985 | ||
2986 | static struct elf_aarch64_stub_hash_entry * | |
2987 | _bfd_aarch64_add_stub_entry_after (const char *stub_name, | |
2988 | asection *link_section, | |
2989 | struct elf_aarch64_link_hash_table *htab) | |
2990 | { | |
2991 | asection *stub_sec; | |
2992 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
2993 | ||
2994 | stub_sec = _bfd_aarch64_get_stub_for_link_section (link_section, htab); | |
2995 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
2996 | TRUE, FALSE); | |
2997 | if (stub_entry == NULL) | |
2998 | { | |
4eca0228 | 2999 | _bfd_error_handler (_("cannot create stub entry %s"), stub_name); |
4106101c MS |
3000 | return NULL; |
3001 | } | |
3002 | ||
3003 | stub_entry->stub_sec = stub_sec; | |
3004 | stub_entry->stub_offset = 0; | |
3005 | stub_entry->id_sec = link_section; | |
3006 | ||
3007 | return stub_entry; | |
3008 | } | |
3009 | ||
3010 | ||
a06ea964 NC |
3011 | static bfd_boolean |
3012 | aarch64_build_one_stub (struct bfd_hash_entry *gen_entry, | |
3013 | void *in_arg ATTRIBUTE_UNUSED) | |
3014 | { | |
cec5225b | 3015 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
3016 | asection *stub_sec; |
3017 | bfd *stub_bfd; | |
3018 | bfd_byte *loc; | |
3019 | bfd_vma sym_value; | |
68fcca92 JW |
3020 | bfd_vma veneered_insn_loc; |
3021 | bfd_vma veneer_entry_loc; | |
3022 | bfd_signed_vma branch_offset = 0; | |
a06ea964 NC |
3023 | unsigned int template_size; |
3024 | const uint32_t *template; | |
3025 | unsigned int i; | |
3026 | ||
3027 | /* Massage our args to the form they really have. */ | |
cec5225b | 3028 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
3029 | |
3030 | stub_sec = stub_entry->stub_sec; | |
3031 | ||
3032 | /* Make a note of the offset within the stubs for this entry. */ | |
3033 | stub_entry->stub_offset = stub_sec->size; | |
3034 | loc = stub_sec->contents + stub_entry->stub_offset; | |
3035 | ||
3036 | stub_bfd = stub_sec->owner; | |
3037 | ||
3038 | /* This is the address of the stub destination. */ | |
3039 | sym_value = (stub_entry->target_value | |
3040 | + stub_entry->target_section->output_offset | |
3041 | + stub_entry->target_section->output_section->vma); | |
3042 | ||
3043 | if (stub_entry->stub_type == aarch64_stub_long_branch) | |
3044 | { | |
3045 | bfd_vma place = (stub_entry->stub_offset + stub_sec->output_section->vma | |
3046 | + stub_sec->output_offset); | |
3047 | ||
3048 | /* See if we can relax the stub. */ | |
3049 | if (aarch64_valid_for_adrp_p (sym_value, place)) | |
3050 | stub_entry->stub_type = aarch64_select_branch_stub (sym_value, place); | |
3051 | } | |
3052 | ||
3053 | switch (stub_entry->stub_type) | |
3054 | { | |
3055 | case aarch64_stub_adrp_branch: | |
3056 | template = aarch64_adrp_branch_stub; | |
3057 | template_size = sizeof (aarch64_adrp_branch_stub); | |
3058 | break; | |
3059 | case aarch64_stub_long_branch: | |
3060 | template = aarch64_long_branch_stub; | |
3061 | template_size = sizeof (aarch64_long_branch_stub); | |
3062 | break; | |
68fcca92 JW |
3063 | case aarch64_stub_erratum_835769_veneer: |
3064 | template = aarch64_erratum_835769_stub; | |
3065 | template_size = sizeof (aarch64_erratum_835769_stub); | |
3066 | break; | |
4106101c MS |
3067 | case aarch64_stub_erratum_843419_veneer: |
3068 | template = aarch64_erratum_843419_stub; | |
3069 | template_size = sizeof (aarch64_erratum_843419_stub); | |
3070 | break; | |
a06ea964 | 3071 | default: |
8e2fe09f | 3072 | abort (); |
a06ea964 NC |
3073 | } |
3074 | ||
3075 | for (i = 0; i < (template_size / sizeof template[0]); i++) | |
3076 | { | |
3077 | bfd_putl32 (template[i], loc); | |
3078 | loc += 4; | |
3079 | } | |
3080 | ||
3081 | template_size = (template_size + 7) & ~7; | |
3082 | stub_sec->size += template_size; | |
3083 | ||
3084 | switch (stub_entry->stub_type) | |
3085 | { | |
3086 | case aarch64_stub_adrp_branch: | |
1d75a8e2 NC |
3087 | if (!aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21), stub_bfd, stub_sec, |
3088 | stub_entry->stub_offset, sym_value)) | |
a06ea964 NC |
3089 | /* The stub would not have been relaxed if the offset was out |
3090 | of range. */ | |
3091 | BFD_FAIL (); | |
3092 | ||
1d75a8e2 NC |
3093 | if (!aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC), stub_bfd, stub_sec, |
3094 | stub_entry->stub_offset + 4, sym_value)) | |
93ca8569 | 3095 | BFD_FAIL (); |
a06ea964 NC |
3096 | break; |
3097 | ||
3098 | case aarch64_stub_long_branch: | |
3099 | /* We want the value relative to the address 12 bytes back from the | |
07d6d2b8 | 3100 | value itself. */ |
1d75a8e2 NC |
3101 | if (!aarch64_relocate (AARCH64_R (PRELNN), stub_bfd, stub_sec, |
3102 | stub_entry->stub_offset + 16, sym_value + 12)) | |
93ca8569 | 3103 | BFD_FAIL (); |
a06ea964 | 3104 | break; |
68fcca92 JW |
3105 | |
3106 | case aarch64_stub_erratum_835769_veneer: | |
3107 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
3108 | + stub_entry->target_section->output_offset | |
3109 | + stub_entry->target_value; | |
3110 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
3111 | + stub_entry->stub_sec->output_offset | |
3112 | + stub_entry->stub_offset; | |
3113 | branch_offset = veneered_insn_loc - veneer_entry_loc; | |
3114 | branch_offset >>= 2; | |
3115 | branch_offset &= 0x3ffffff; | |
3116 | bfd_putl32 (stub_entry->veneered_insn, | |
3117 | stub_sec->contents + stub_entry->stub_offset); | |
3118 | bfd_putl32 (template[1] | branch_offset, | |
3119 | stub_sec->contents + stub_entry->stub_offset + 4); | |
3120 | break; | |
3121 | ||
4106101c | 3122 | case aarch64_stub_erratum_843419_veneer: |
1d75a8e2 NC |
3123 | if (!aarch64_relocate (AARCH64_R (JUMP26), stub_bfd, stub_sec, |
3124 | stub_entry->stub_offset + 4, sym_value + 4)) | |
4106101c MS |
3125 | BFD_FAIL (); |
3126 | break; | |
3127 | ||
a06ea964 | 3128 | default: |
8e2fe09f | 3129 | abort (); |
a06ea964 NC |
3130 | } |
3131 | ||
3132 | return TRUE; | |
3133 | } | |
3134 | ||
3135 | /* As above, but don't actually build the stub. Just bump offset so | |
3136 | we know stub section sizes. */ | |
3137 | ||
3138 | static bfd_boolean | |
3139 | aarch64_size_one_stub (struct bfd_hash_entry *gen_entry, | |
3140 | void *in_arg ATTRIBUTE_UNUSED) | |
3141 | { | |
cec5225b | 3142 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
3143 | int size; |
3144 | ||
3145 | /* Massage our args to the form they really have. */ | |
cec5225b | 3146 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
3147 | |
3148 | switch (stub_entry->stub_type) | |
3149 | { | |
3150 | case aarch64_stub_adrp_branch: | |
3151 | size = sizeof (aarch64_adrp_branch_stub); | |
3152 | break; | |
3153 | case aarch64_stub_long_branch: | |
3154 | size = sizeof (aarch64_long_branch_stub); | |
3155 | break; | |
68fcca92 JW |
3156 | case aarch64_stub_erratum_835769_veneer: |
3157 | size = sizeof (aarch64_erratum_835769_stub); | |
3158 | break; | |
4106101c MS |
3159 | case aarch64_stub_erratum_843419_veneer: |
3160 | size = sizeof (aarch64_erratum_843419_stub); | |
3161 | break; | |
a06ea964 | 3162 | default: |
8e2fe09f | 3163 | abort (); |
a06ea964 NC |
3164 | } |
3165 | ||
3166 | size = (size + 7) & ~7; | |
3167 | stub_entry->stub_sec->size += size; | |
3168 | return TRUE; | |
3169 | } | |
3170 | ||
3171 | /* External entry points for sizing and building linker stubs. */ | |
3172 | ||
3173 | /* Set up various things so that we can make a list of input sections | |
3174 | for each output section included in the link. Returns -1 on error, | |
3175 | 0 when no stubs will be needed, and 1 on success. */ | |
3176 | ||
3177 | int | |
cec5225b | 3178 | elfNN_aarch64_setup_section_lists (bfd *output_bfd, |
a06ea964 NC |
3179 | struct bfd_link_info *info) |
3180 | { | |
3181 | bfd *input_bfd; | |
3182 | unsigned int bfd_count; | |
7292b3ac | 3183 | unsigned int top_id, top_index; |
a06ea964 NC |
3184 | asection *section; |
3185 | asection **input_list, **list; | |
3186 | bfd_size_type amt; | |
cec5225b YZ |
3187 | struct elf_aarch64_link_hash_table *htab = |
3188 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
3189 | |
3190 | if (!is_elf_hash_table (htab)) | |
3191 | return 0; | |
3192 | ||
3193 | /* Count the number of input BFDs and find the top input section id. */ | |
3194 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
c72f2fb2 | 3195 | input_bfd != NULL; input_bfd = input_bfd->link.next) |
a06ea964 NC |
3196 | { |
3197 | bfd_count += 1; | |
3198 | for (section = input_bfd->sections; | |
3199 | section != NULL; section = section->next) | |
3200 | { | |
3201 | if (top_id < section->id) | |
3202 | top_id = section->id; | |
3203 | } | |
3204 | } | |
3205 | htab->bfd_count = bfd_count; | |
3206 | ||
3207 | amt = sizeof (struct map_stub) * (top_id + 1); | |
3208 | htab->stub_group = bfd_zmalloc (amt); | |
3209 | if (htab->stub_group == NULL) | |
3210 | return -1; | |
3211 | ||
3212 | /* We can't use output_bfd->section_count here to find the top output | |
3213 | section index as some sections may have been removed, and | |
3214 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
3215 | for (section = output_bfd->sections, top_index = 0; | |
3216 | section != NULL; section = section->next) | |
3217 | { | |
3218 | if (top_index < section->index) | |
3219 | top_index = section->index; | |
3220 | } | |
3221 | ||
3222 | htab->top_index = top_index; | |
3223 | amt = sizeof (asection *) * (top_index + 1); | |
3224 | input_list = bfd_malloc (amt); | |
3225 | htab->input_list = input_list; | |
3226 | if (input_list == NULL) | |
3227 | return -1; | |
3228 | ||
3229 | /* For sections we aren't interested in, mark their entries with a | |
3230 | value we can check later. */ | |
3231 | list = input_list + top_index; | |
3232 | do | |
3233 | *list = bfd_abs_section_ptr; | |
3234 | while (list-- != input_list); | |
3235 | ||
3236 | for (section = output_bfd->sections; | |
3237 | section != NULL; section = section->next) | |
3238 | { | |
3239 | if ((section->flags & SEC_CODE) != 0) | |
3240 | input_list[section->index] = NULL; | |
3241 | } | |
3242 | ||
3243 | return 1; | |
3244 | } | |
3245 | ||
cec5225b | 3246 | /* Used by elfNN_aarch64_next_input_section and group_sections. */ |
a06ea964 NC |
3247 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3248 | ||
3249 | /* The linker repeatedly calls this function for each input section, | |
3250 | in the order that input sections are linked into output sections. | |
3251 | Build lists of input sections to determine groupings between which | |
3252 | we may insert linker stubs. */ | |
3253 | ||
3254 | void | |
cec5225b | 3255 | elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec) |
a06ea964 | 3256 | { |
cec5225b YZ |
3257 | struct elf_aarch64_link_hash_table *htab = |
3258 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
3259 | |
3260 | if (isec->output_section->index <= htab->top_index) | |
3261 | { | |
3262 | asection **list = htab->input_list + isec->output_section->index; | |
3263 | ||
3264 | if (*list != bfd_abs_section_ptr) | |
3265 | { | |
3266 | /* Steal the link_sec pointer for our list. */ | |
3267 | /* This happens to make the list in reverse order, | |
3268 | which is what we want. */ | |
3269 | PREV_SEC (isec) = *list; | |
3270 | *list = isec; | |
3271 | } | |
3272 | } | |
3273 | } | |
3274 | ||
3275 | /* See whether we can group stub sections together. Grouping stub | |
3276 | sections may result in fewer stubs. More importantly, we need to | |
3277 | put all .init* and .fini* stubs at the beginning of the .init or | |
3278 | .fini output sections respectively, because glibc splits the | |
3279 | _init and _fini functions into multiple parts. Putting a stub in | |
3280 | the middle of a function is not a good idea. */ | |
3281 | ||
3282 | static void | |
cec5225b | 3283 | group_sections (struct elf_aarch64_link_hash_table *htab, |
a06ea964 NC |
3284 | bfd_size_type stub_group_size, |
3285 | bfd_boolean stubs_always_before_branch) | |
3286 | { | |
3287 | asection **list = htab->input_list + htab->top_index; | |
3288 | ||
3289 | do | |
3290 | { | |
3291 | asection *tail = *list; | |
3292 | ||
3293 | if (tail == bfd_abs_section_ptr) | |
3294 | continue; | |
3295 | ||
3296 | while (tail != NULL) | |
3297 | { | |
3298 | asection *curr; | |
3299 | asection *prev; | |
3300 | bfd_size_type total; | |
3301 | ||
3302 | curr = tail; | |
3303 | total = tail->size; | |
3304 | while ((prev = PREV_SEC (curr)) != NULL | |
3305 | && ((total += curr->output_offset - prev->output_offset) | |
3306 | < stub_group_size)) | |
3307 | curr = prev; | |
3308 | ||
3309 | /* OK, the size from the start of CURR to the end is less | |
3310 | than stub_group_size and thus can be handled by one stub | |
3311 | section. (Or the tail section is itself larger than | |
3312 | stub_group_size, in which case we may be toast.) | |
3313 | We should really be keeping track of the total size of | |
3314 | stubs added here, as stubs contribute to the final output | |
3315 | section size. */ | |
3316 | do | |
3317 | { | |
3318 | prev = PREV_SEC (tail); | |
3319 | /* Set up this stub group. */ | |
3320 | htab->stub_group[tail->id].link_sec = curr; | |
3321 | } | |
3322 | while (tail != curr && (tail = prev) != NULL); | |
3323 | ||
3324 | /* But wait, there's more! Input sections up to stub_group_size | |
3325 | bytes before the stub section can be handled by it too. */ | |
3326 | if (!stubs_always_before_branch) | |
3327 | { | |
3328 | total = 0; | |
3329 | while (prev != NULL | |
3330 | && ((total += tail->output_offset - prev->output_offset) | |
3331 | < stub_group_size)) | |
3332 | { | |
3333 | tail = prev; | |
3334 | prev = PREV_SEC (tail); | |
3335 | htab->stub_group[tail->id].link_sec = curr; | |
3336 | } | |
3337 | } | |
3338 | tail = prev; | |
3339 | } | |
3340 | } | |
3341 | while (list-- != htab->input_list); | |
3342 | ||
3343 | free (htab->input_list); | |
3344 | } | |
3345 | ||
3346 | #undef PREV_SEC | |
3347 | ||
68fcca92 JW |
3348 | #define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1)) |
3349 | ||
3350 | #define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5) | |
3351 | #define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5) | |
3352 | #define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5) | |
3353 | #define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5) | |
3354 | #define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5) | |
3355 | #define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5) | |
3356 | ||
3357 | #define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000) | |
3358 | #define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1) | |
3359 | #define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3) | |
3360 | #define AARCH64_ZR 0x1f | |
3361 | ||
3362 | /* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for | |
3363 | LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */ | |
3364 | ||
3365 | #define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1) | |
3366 | #define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000) | |
3367 | #define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000) | |
3368 | #define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000) | |
3369 | #define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000) | |
3370 | #define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000) | |
3371 | #define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000) | |
3372 | #define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000) | |
3373 | #define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000) | |
3374 | #define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400) | |
3375 | #define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800) | |
3376 | #define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00) | |
3377 | #define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800) | |
3378 | #define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000) | |
3379 | #define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000) | |
3380 | #define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000) | |
3381 | #define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000) | |
3382 | #define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000) | |
3383 | ||
3d14faea MS |
3384 | /* Classify an INSN if it is indeed a load/store. |
3385 | ||
3386 | Return TRUE if INSN is a LD/ST instruction otherwise return FALSE. | |
3387 | ||
3388 | For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2 | |
3389 | is set equal to RT. | |
3390 | ||
2d0ca824 | 3391 | For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. */ |
68fcca92 JW |
3392 | |
3393 | static bfd_boolean | |
3d14faea | 3394 | aarch64_mem_op_p (uint32_t insn, unsigned int *rt, unsigned int *rt2, |
68fcca92 JW |
3395 | bfd_boolean *pair, bfd_boolean *load) |
3396 | { | |
3397 | uint32_t opcode; | |
3398 | unsigned int r; | |
3399 | uint32_t opc = 0; | |
3400 | uint32_t v = 0; | |
3401 | uint32_t opc_v = 0; | |
3402 | ||
de194d85 | 3403 | /* Bail out quickly if INSN doesn't fall into the load-store |
68fcca92 JW |
3404 | encoding space. */ |
3405 | if (!AARCH64_LDST (insn)) | |
3406 | return FALSE; | |
3407 | ||
3408 | *pair = FALSE; | |
3409 | *load = FALSE; | |
3410 | if (AARCH64_LDST_EX (insn)) | |
3411 | { | |
3412 | *rt = AARCH64_RT (insn); | |
3d14faea | 3413 | *rt2 = *rt; |
68fcca92 | 3414 | if (AARCH64_BIT (insn, 21) == 1) |
07d6d2b8 | 3415 | { |
68fcca92 | 3416 | *pair = TRUE; |
3d14faea | 3417 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
3418 | } |
3419 | *load = AARCH64_LD (insn); | |
3420 | return TRUE; | |
3421 | } | |
3422 | else if (AARCH64_LDST_NAP (insn) | |
3423 | || AARCH64_LDSTP_PI (insn) | |
3424 | || AARCH64_LDSTP_O (insn) | |
3425 | || AARCH64_LDSTP_PRE (insn)) | |
3426 | { | |
3427 | *pair = TRUE; | |
3428 | *rt = AARCH64_RT (insn); | |
3d14faea | 3429 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
3430 | *load = AARCH64_LD (insn); |
3431 | return TRUE; | |
3432 | } | |
3433 | else if (AARCH64_LDST_PCREL (insn) | |
3434 | || AARCH64_LDST_UI (insn) | |
3435 | || AARCH64_LDST_PIIMM (insn) | |
3436 | || AARCH64_LDST_U (insn) | |
3437 | || AARCH64_LDST_PREIMM (insn) | |
3438 | || AARCH64_LDST_RO (insn) | |
3439 | || AARCH64_LDST_UIMM (insn)) | |
3440 | { | |
3441 | *rt = AARCH64_RT (insn); | |
3d14faea | 3442 | *rt2 = *rt; |
68fcca92 JW |
3443 | if (AARCH64_LDST_PCREL (insn)) |
3444 | *load = TRUE; | |
3445 | opc = AARCH64_BITS (insn, 22, 2); | |
3446 | v = AARCH64_BIT (insn, 26); | |
3447 | opc_v = opc | (v << 2); | |
3448 | *load = (opc_v == 1 || opc_v == 2 || opc_v == 3 | |
3449 | || opc_v == 5 || opc_v == 7); | |
3450 | return TRUE; | |
3451 | } | |
3452 | else if (AARCH64_LDST_SIMD_M (insn) | |
3453 | || AARCH64_LDST_SIMD_M_PI (insn)) | |
3454 | { | |
3455 | *rt = AARCH64_RT (insn); | |
3456 | *load = AARCH64_BIT (insn, 22); | |
3457 | opcode = (insn >> 12) & 0xf; | |
3458 | switch (opcode) | |
3459 | { | |
3460 | case 0: | |
3461 | case 2: | |
3d14faea | 3462 | *rt2 = *rt + 3; |
68fcca92 JW |
3463 | break; |
3464 | ||
3465 | case 4: | |
3466 | case 6: | |
3d14faea | 3467 | *rt2 = *rt + 2; |
68fcca92 JW |
3468 | break; |
3469 | ||
3470 | case 7: | |
3d14faea | 3471 | *rt2 = *rt; |
68fcca92 JW |
3472 | break; |
3473 | ||
3474 | case 8: | |
3475 | case 10: | |
3d14faea | 3476 | *rt2 = *rt + 1; |
68fcca92 JW |
3477 | break; |
3478 | ||
3479 | default: | |
3480 | return FALSE; | |
3481 | } | |
3482 | return TRUE; | |
3483 | } | |
3484 | else if (AARCH64_LDST_SIMD_S (insn) | |
3485 | || AARCH64_LDST_SIMD_S_PI (insn)) | |
3486 | { | |
3487 | *rt = AARCH64_RT (insn); | |
3488 | r = (insn >> 21) & 1; | |
3489 | *load = AARCH64_BIT (insn, 22); | |
3490 | opcode = (insn >> 13) & 0x7; | |
3491 | switch (opcode) | |
3492 | { | |
3493 | case 0: | |
3494 | case 2: | |
3495 | case 4: | |
3d14faea | 3496 | *rt2 = *rt + r; |
68fcca92 JW |
3497 | break; |
3498 | ||
3499 | case 1: | |
3500 | case 3: | |
3501 | case 5: | |
3d14faea | 3502 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
3503 | break; |
3504 | ||
3505 | case 6: | |
3d14faea | 3506 | *rt2 = *rt + r; |
68fcca92 JW |
3507 | break; |
3508 | ||
3509 | case 7: | |
3d14faea | 3510 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
3511 | break; |
3512 | ||
3513 | default: | |
3514 | return FALSE; | |
3515 | } | |
3516 | return TRUE; | |
3517 | } | |
3518 | ||
3519 | return FALSE; | |
3520 | } | |
3521 | ||
3522 | /* Return TRUE if INSN is multiply-accumulate. */ | |
3523 | ||
3524 | static bfd_boolean | |
3525 | aarch64_mlxl_p (uint32_t insn) | |
3526 | { | |
3527 | uint32_t op31 = AARCH64_OP31 (insn); | |
3528 | ||
3529 | if (AARCH64_MAC (insn) | |
3530 | && (op31 == 0 || op31 == 1 || op31 == 5) | |
3531 | /* Exclude MUL instructions which are encoded as a multiple accumulate | |
3532 | with RA = XZR. */ | |
3533 | && AARCH64_RA (insn) != AARCH64_ZR) | |
3534 | return TRUE; | |
3535 | ||
3536 | return FALSE; | |
3537 | } | |
3538 | ||
3539 | /* Some early revisions of the Cortex-A53 have an erratum (835769) whereby | |
3540 | it is possible for a 64-bit multiply-accumulate instruction to generate an | |
3541 | incorrect result. The details are quite complex and hard to | |
3542 | determine statically, since branches in the code may exist in some | |
3543 | circumstances, but all cases end with a memory (load, store, or | |
3544 | prefetch) instruction followed immediately by the multiply-accumulate | |
3545 | operation. We employ a linker patching technique, by moving the potentially | |
3546 | affected multiply-accumulate instruction into a patch region and replacing | |
3547 | the original instruction with a branch to the patch. This function checks | |
3548 | if INSN_1 is the memory operation followed by a multiply-accumulate | |
3549 | operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE | |
3550 | if INSN_1 and INSN_2 are safe. */ | |
3551 | ||
3552 | static bfd_boolean | |
3553 | aarch64_erratum_sequence (uint32_t insn_1, uint32_t insn_2) | |
3554 | { | |
3555 | uint32_t rt; | |
3d14faea | 3556 | uint32_t rt2; |
68fcca92 JW |
3557 | uint32_t rn; |
3558 | uint32_t rm; | |
3559 | uint32_t ra; | |
3560 | bfd_boolean pair; | |
3561 | bfd_boolean load; | |
3562 | ||
3563 | if (aarch64_mlxl_p (insn_2) | |
3d14faea | 3564 | && aarch64_mem_op_p (insn_1, &rt, &rt2, &pair, &load)) |
68fcca92 JW |
3565 | { |
3566 | /* Any SIMD memory op is independent of the subsequent MLA | |
3567 | by definition of the erratum. */ | |
3568 | if (AARCH64_BIT (insn_1, 26)) | |
3569 | return TRUE; | |
3570 | ||
3571 | /* If not SIMD, check for integer memory ops and MLA relationship. */ | |
3572 | rn = AARCH64_RN (insn_2); | |
3573 | ra = AARCH64_RA (insn_2); | |
3574 | rm = AARCH64_RM (insn_2); | |
3575 | ||
3576 | /* If this is a load and there's a true(RAW) dependency, we are safe | |
3577 | and this is not an erratum sequence. */ | |
3578 | if (load && | |
3579 | (rt == rn || rt == rm || rt == ra | |
3d14faea | 3580 | || (pair && (rt2 == rn || rt2 == rm || rt2 == ra)))) |
68fcca92 JW |
3581 | return FALSE; |
3582 | ||
3583 | /* We conservatively put out stubs for all other cases (including | |
3584 | writebacks). */ | |
3585 | return TRUE; | |
3586 | } | |
3587 | ||
3588 | return FALSE; | |
3589 | } | |
3590 | ||
520c7b56 JW |
3591 | /* Used to order a list of mapping symbols by address. */ |
3592 | ||
3593 | static int | |
3594 | elf_aarch64_compare_mapping (const void *a, const void *b) | |
3595 | { | |
3596 | const elf_aarch64_section_map *amap = (const elf_aarch64_section_map *) a; | |
3597 | const elf_aarch64_section_map *bmap = (const elf_aarch64_section_map *) b; | |
3598 | ||
3599 | if (amap->vma > bmap->vma) | |
3600 | return 1; | |
3601 | else if (amap->vma < bmap->vma) | |
3602 | return -1; | |
3603 | else if (amap->type > bmap->type) | |
3604 | /* Ensure results do not depend on the host qsort for objects with | |
3605 | multiple mapping symbols at the same address by sorting on type | |
3606 | after vma. */ | |
3607 | return 1; | |
3608 | else if (amap->type < bmap->type) | |
3609 | return -1; | |
3610 | else | |
3611 | return 0; | |
3612 | } | |
3613 | ||
2144188d | 3614 | |
35fee8b7 MS |
3615 | static char * |
3616 | _bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes) | |
3617 | { | |
3618 | char *stub_name = (char *) bfd_malloc | |
3619 | (strlen ("__erratum_835769_veneer_") + 16); | |
3620 | sprintf (stub_name,"__erratum_835769_veneer_%d", num_fixes); | |
3621 | return stub_name; | |
3622 | } | |
3623 | ||
4106101c | 3624 | /* Scan for Cortex-A53 erratum 835769 sequence. |
2144188d MS |
3625 | |
3626 | Return TRUE else FALSE on abnormal termination. */ | |
3627 | ||
68fcca92 | 3628 | static bfd_boolean |
5421cc6e MS |
3629 | _bfd_aarch64_erratum_835769_scan (bfd *input_bfd, |
3630 | struct bfd_link_info *info, | |
3631 | unsigned int *num_fixes_p) | |
68fcca92 JW |
3632 | { |
3633 | asection *section; | |
3634 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
68fcca92 | 3635 | unsigned int num_fixes = *num_fixes_p; |
68fcca92 JW |
3636 | |
3637 | if (htab == NULL) | |
2144188d | 3638 | return TRUE; |
68fcca92 JW |
3639 | |
3640 | for (section = input_bfd->sections; | |
3641 | section != NULL; | |
3642 | section = section->next) | |
3643 | { | |
3644 | bfd_byte *contents = NULL; | |
3645 | struct _aarch64_elf_section_data *sec_data; | |
3646 | unsigned int span; | |
3647 | ||
3648 | if (elf_section_type (section) != SHT_PROGBITS | |
3649 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
3650 | || (section->flags & SEC_EXCLUDE) != 0 | |
3651 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
3652 | || (section->output_section == bfd_abs_section_ptr)) | |
3653 | continue; | |
3654 | ||
3655 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
3656 | contents = elf_section_data (section)->this_hdr.contents; | |
3657 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
2144188d | 3658 | return FALSE; |
68fcca92 JW |
3659 | |
3660 | sec_data = elf_aarch64_section_data (section); | |
520c7b56 JW |
3661 | |
3662 | qsort (sec_data->map, sec_data->mapcount, | |
3663 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
3664 | ||
68fcca92 JW |
3665 | for (span = 0; span < sec_data->mapcount; span++) |
3666 | { | |
3667 | unsigned int span_start = sec_data->map[span].vma; | |
3668 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
3669 | ? sec_data->map[0].vma + section->size | |
3670 | : sec_data->map[span + 1].vma); | |
3671 | unsigned int i; | |
3672 | char span_type = sec_data->map[span].type; | |
3673 | ||
3674 | if (span_type == 'd') | |
3675 | continue; | |
3676 | ||
3677 | for (i = span_start; i + 4 < span_end; i += 4) | |
3678 | { | |
3679 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
3680 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
3681 | ||
3682 | if (aarch64_erratum_sequence (insn_1, insn_2)) | |
3683 | { | |
5421cc6e | 3684 | struct elf_aarch64_stub_hash_entry *stub_entry; |
35fee8b7 MS |
3685 | char *stub_name = _bfd_aarch64_erratum_835769_stub_name (num_fixes); |
3686 | if (! stub_name) | |
2144188d | 3687 | return FALSE; |
68fcca92 | 3688 | |
5421cc6e MS |
3689 | stub_entry = _bfd_aarch64_add_stub_entry_in_group (stub_name, |
3690 | section, | |
3691 | htab); | |
3692 | if (! stub_entry) | |
3693 | return FALSE; | |
68fcca92 | 3694 | |
5421cc6e MS |
3695 | stub_entry->stub_type = aarch64_stub_erratum_835769_veneer; |
3696 | stub_entry->target_section = section; | |
3697 | stub_entry->target_value = i + 4; | |
3698 | stub_entry->veneered_insn = insn_2; | |
3699 | stub_entry->output_name = stub_name; | |
68fcca92 JW |
3700 | num_fixes++; |
3701 | } | |
3702 | } | |
3703 | } | |
3704 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
3705 | free (contents); | |
3706 | } | |
3707 | ||
357d1523 MS |
3708 | *num_fixes_p = num_fixes; |
3709 | ||
2144188d | 3710 | return TRUE; |
68fcca92 JW |
3711 | } |
3712 | ||
13f622ec | 3713 | |
4106101c MS |
3714 | /* Test if instruction INSN is ADRP. */ |
3715 | ||
3716 | static bfd_boolean | |
3717 | _bfd_aarch64_adrp_p (uint32_t insn) | |
3718 | { | |
3719 | return ((insn & 0x9f000000) == 0x90000000); | |
3720 | } | |
3721 | ||
3722 | ||
3723 | /* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */ | |
3724 | ||
3725 | static bfd_boolean | |
3726 | _bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1, uint32_t insn_2, | |
3727 | uint32_t insn_3) | |
3728 | { | |
3729 | uint32_t rt; | |
3730 | uint32_t rt2; | |
3731 | bfd_boolean pair; | |
3732 | bfd_boolean load; | |
3733 | ||
3734 | return (aarch64_mem_op_p (insn_2, &rt, &rt2, &pair, &load) | |
3735 | && (!pair | |
3736 | || (pair && !load)) | |
3737 | && AARCH64_LDST_UIMM (insn_3) | |
3738 | && AARCH64_RN (insn_3) == AARCH64_RD (insn_1)); | |
3739 | } | |
3740 | ||
3741 | ||
3742 | /* Test for the presence of Cortex-A53 erratum 843419 instruction sequence. | |
3743 | ||
3744 | Return TRUE if section CONTENTS at offset I contains one of the | |
3745 | erratum 843419 sequences, otherwise return FALSE. If a sequence is | |
3746 | seen set P_VENEER_I to the offset of the final LOAD/STORE | |
3747 | instruction in the sequence. | |
3748 | */ | |
3749 | ||
3750 | static bfd_boolean | |
3751 | _bfd_aarch64_erratum_843419_p (bfd_byte *contents, bfd_vma vma, | |
3752 | bfd_vma i, bfd_vma span_end, | |
3753 | bfd_vma *p_veneer_i) | |
3754 | { | |
3755 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
3756 | ||
3757 | if (!_bfd_aarch64_adrp_p (insn_1)) | |
3758 | return FALSE; | |
3759 | ||
3760 | if (span_end < i + 12) | |
3761 | return FALSE; | |
3762 | ||
3763 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
3764 | uint32_t insn_3 = bfd_getl32 (contents + i + 8); | |
3765 | ||
3766 | if ((vma & 0xfff) != 0xff8 && (vma & 0xfff) != 0xffc) | |
3767 | return FALSE; | |
3768 | ||
3769 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_3)) | |
3770 | { | |
3771 | *p_veneer_i = i + 8; | |
3772 | return TRUE; | |
3773 | } | |
3774 | ||
3775 | if (span_end < i + 16) | |
3776 | return FALSE; | |
3777 | ||
3778 | uint32_t insn_4 = bfd_getl32 (contents + i + 12); | |
3779 | ||
3780 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_4)) | |
3781 | { | |
3782 | *p_veneer_i = i + 12; | |
3783 | return TRUE; | |
3784 | } | |
3785 | ||
3786 | return FALSE; | |
3787 | } | |
3788 | ||
3789 | ||
13f622ec MS |
3790 | /* Resize all stub sections. */ |
3791 | ||
3792 | static void | |
3793 | _bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table *htab) | |
3794 | { | |
3795 | asection *section; | |
3796 | ||
3797 | /* OK, we've added some stubs. Find out the new size of the | |
3798 | stub sections. */ | |
3799 | for (section = htab->stub_bfd->sections; | |
3800 | section != NULL; section = section->next) | |
3801 | { | |
3802 | /* Ignore non-stub sections. */ | |
3803 | if (!strstr (section->name, STUB_SUFFIX)) | |
3804 | continue; | |
3805 | section->size = 0; | |
3806 | } | |
3807 | ||
3808 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab); | |
13f622ec | 3809 | |
61865519 MS |
3810 | for (section = htab->stub_bfd->sections; |
3811 | section != NULL; section = section->next) | |
3812 | { | |
3813 | if (!strstr (section->name, STUB_SUFFIX)) | |
3814 | continue; | |
3815 | ||
9a2ebffd JW |
3816 | /* Add space for a branch. Add 8 bytes to keep section 8 byte aligned, |
3817 | as long branch stubs contain a 64-bit address. */ | |
61865519 | 3818 | if (section->size) |
9a2ebffd | 3819 | section->size += 8; |
4106101c MS |
3820 | |
3821 | /* Ensure all stub sections have a size which is a multiple of | |
3822 | 4096. This is important in order to ensure that the insertion | |
3823 | of stub sections does not in itself move existing code around | |
3824 | in such a way that new errata sequences are created. */ | |
3825 | if (htab->fix_erratum_843419) | |
3826 | if (section->size) | |
3827 | section->size = BFD_ALIGN (section->size, 0x1000); | |
3828 | } | |
3829 | } | |
3830 | ||
9a2ebffd | 3831 | /* Construct an erratum 843419 workaround stub name. */ |
4106101c MS |
3832 | |
3833 | static char * | |
3834 | _bfd_aarch64_erratum_843419_stub_name (asection *input_section, | |
3835 | bfd_vma offset) | |
3836 | { | |
3837 | const bfd_size_type len = 8 + 4 + 1 + 8 + 1 + 16 + 1; | |
3838 | char *stub_name = bfd_malloc (len); | |
3839 | ||
3840 | if (stub_name != NULL) | |
3841 | snprintf (stub_name, len, "e843419@%04x_%08x_%" BFD_VMA_FMT "x", | |
3842 | input_section->owner->id, | |
3843 | input_section->id, | |
3844 | offset); | |
3845 | return stub_name; | |
3846 | } | |
3847 | ||
3848 | /* Build a stub_entry structure describing an 843419 fixup. | |
3849 | ||
3850 | The stub_entry constructed is populated with the bit pattern INSN | |
3851 | of the instruction located at OFFSET within input SECTION. | |
3852 | ||
3853 | Returns TRUE on success. */ | |
3854 | ||
3855 | static bfd_boolean | |
3856 | _bfd_aarch64_erratum_843419_fixup (uint32_t insn, | |
3857 | bfd_vma adrp_offset, | |
3858 | bfd_vma ldst_offset, | |
3859 | asection *section, | |
3860 | struct bfd_link_info *info) | |
3861 | { | |
3862 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
3863 | char *stub_name; | |
3864 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
3865 | ||
3866 | stub_name = _bfd_aarch64_erratum_843419_stub_name (section, ldst_offset); | |
3867 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
3868 | FALSE, FALSE); | |
3869 | if (stub_entry) | |
3870 | { | |
3871 | free (stub_name); | |
3872 | return TRUE; | |
3873 | } | |
3874 | ||
3875 | /* We always place an 843419 workaround veneer in the stub section | |
3876 | attached to the input section in which an erratum sequence has | |
3877 | been found. This ensures that later in the link process (in | |
3878 | elfNN_aarch64_write_section) when we copy the veneered | |
3879 | instruction from the input section into the stub section the | |
3880 | copied instruction will have had any relocations applied to it. | |
3881 | If we placed workaround veneers in any other stub section then we | |
3882 | could not assume that all relocations have been processed on the | |
3883 | corresponding input section at the point we output the stub | |
3884 | section. | |
3885 | */ | |
3886 | ||
3887 | stub_entry = _bfd_aarch64_add_stub_entry_after (stub_name, section, htab); | |
3888 | if (stub_entry == NULL) | |
3889 | { | |
3890 | free (stub_name); | |
3891 | return FALSE; | |
3892 | } | |
3893 | ||
3894 | stub_entry->adrp_offset = adrp_offset; | |
3895 | stub_entry->target_value = ldst_offset; | |
3896 | stub_entry->target_section = section; | |
3897 | stub_entry->stub_type = aarch64_stub_erratum_843419_veneer; | |
3898 | stub_entry->veneered_insn = insn; | |
3899 | stub_entry->output_name = stub_name; | |
3900 | ||
3901 | return TRUE; | |
3902 | } | |
3903 | ||
3904 | ||
3905 | /* Scan an input section looking for the signature of erratum 843419. | |
3906 | ||
3907 | Scans input SECTION in INPUT_BFD looking for erratum 843419 | |
3908 | signatures, for each signature found a stub_entry is created | |
3909 | describing the location of the erratum for subsequent fixup. | |
3910 | ||
3911 | Return TRUE on successful scan, FALSE on failure to scan. | |
3912 | */ | |
3913 | ||
3914 | static bfd_boolean | |
3915 | _bfd_aarch64_erratum_843419_scan (bfd *input_bfd, asection *section, | |
3916 | struct bfd_link_info *info) | |
3917 | { | |
3918 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
3919 | ||
3920 | if (htab == NULL) | |
3921 | return TRUE; | |
3922 | ||
3923 | if (elf_section_type (section) != SHT_PROGBITS | |
3924 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
3925 | || (section->flags & SEC_EXCLUDE) != 0 | |
3926 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
3927 | || (section->output_section == bfd_abs_section_ptr)) | |
3928 | return TRUE; | |
3929 | ||
3930 | do | |
3931 | { | |
3932 | bfd_byte *contents = NULL; | |
3933 | struct _aarch64_elf_section_data *sec_data; | |
3934 | unsigned int span; | |
3935 | ||
3936 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
3937 | contents = elf_section_data (section)->this_hdr.contents; | |
3938 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
3939 | return FALSE; | |
3940 | ||
3941 | sec_data = elf_aarch64_section_data (section); | |
3942 | ||
3943 | qsort (sec_data->map, sec_data->mapcount, | |
3944 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
3945 | ||
3946 | for (span = 0; span < sec_data->mapcount; span++) | |
3947 | { | |
3948 | unsigned int span_start = sec_data->map[span].vma; | |
3949 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
3950 | ? sec_data->map[0].vma + section->size | |
3951 | : sec_data->map[span + 1].vma); | |
3952 | unsigned int i; | |
3953 | char span_type = sec_data->map[span].type; | |
3954 | ||
3955 | if (span_type == 'd') | |
3956 | continue; | |
3957 | ||
3958 | for (i = span_start; i + 8 < span_end; i += 4) | |
3959 | { | |
3960 | bfd_vma vma = (section->output_section->vma | |
3961 | + section->output_offset | |
3962 | + i); | |
3963 | bfd_vma veneer_i; | |
3964 | ||
3965 | if (_bfd_aarch64_erratum_843419_p | |
3966 | (contents, vma, i, span_end, &veneer_i)) | |
3967 | { | |
3968 | uint32_t insn = bfd_getl32 (contents + veneer_i); | |
3969 | ||
3970 | if (!_bfd_aarch64_erratum_843419_fixup (insn, i, veneer_i, | |
3971 | section, info)) | |
3972 | return FALSE; | |
3973 | } | |
3974 | } | |
3975 | } | |
3976 | ||
3977 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
3978 | free (contents); | |
61865519 | 3979 | } |
4106101c MS |
3980 | while (0); |
3981 | ||
3982 | return TRUE; | |
61865519 | 3983 | } |
13f622ec | 3984 | |
4106101c | 3985 | |
a06ea964 NC |
3986 | /* Determine and set the size of the stub section for a final link. |
3987 | ||
3988 | The basic idea here is to examine all the relocations looking for | |
3989 | PC-relative calls to a target that is unreachable with a "bl" | |
3990 | instruction. */ | |
3991 | ||
3992 | bfd_boolean | |
cec5225b | 3993 | elfNN_aarch64_size_stubs (bfd *output_bfd, |
a06ea964 NC |
3994 | bfd *stub_bfd, |
3995 | struct bfd_link_info *info, | |
3996 | bfd_signed_vma group_size, | |
3997 | asection * (*add_stub_section) (const char *, | |
3998 | asection *), | |
3999 | void (*layout_sections_again) (void)) | |
4000 | { | |
4001 | bfd_size_type stub_group_size; | |
4002 | bfd_boolean stubs_always_before_branch; | |
5421cc6e | 4003 | bfd_boolean stub_changed = FALSE; |
cec5225b | 4004 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); |
68fcca92 | 4005 | unsigned int num_erratum_835769_fixes = 0; |
a06ea964 NC |
4006 | |
4007 | /* Propagate mach to stub bfd, because it may not have been | |
4008 | finalized when we created stub_bfd. */ | |
4009 | bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd), | |
4010 | bfd_get_mach (output_bfd)); | |
4011 | ||
4012 | /* Stash our params away. */ | |
4013 | htab->stub_bfd = stub_bfd; | |
4014 | htab->add_stub_section = add_stub_section; | |
4015 | htab->layout_sections_again = layout_sections_again; | |
4016 | stubs_always_before_branch = group_size < 0; | |
4017 | if (group_size < 0) | |
4018 | stub_group_size = -group_size; | |
4019 | else | |
4020 | stub_group_size = group_size; | |
4021 | ||
4022 | if (stub_group_size == 1) | |
4023 | { | |
4024 | /* Default values. */ | |
b9eead84 | 4025 | /* AArch64 branch range is +-128MB. The value used is 1MB less. */ |
a06ea964 NC |
4026 | stub_group_size = 127 * 1024 * 1024; |
4027 | } | |
4028 | ||
4029 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
4030 | ||
4106101c MS |
4031 | (*htab->layout_sections_again) (); |
4032 | ||
5421cc6e MS |
4033 | if (htab->fix_erratum_835769) |
4034 | { | |
4035 | bfd *input_bfd; | |
4036 | ||
4037 | for (input_bfd = info->input_bfds; | |
4038 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
4039 | if (!_bfd_aarch64_erratum_835769_scan (input_bfd, info, | |
4040 | &num_erratum_835769_fixes)) | |
4041 | return FALSE; | |
4042 | ||
4106101c MS |
4043 | _bfd_aarch64_resize_stubs (htab); |
4044 | (*htab->layout_sections_again) (); | |
4045 | } | |
4046 | ||
4047 | if (htab->fix_erratum_843419) | |
4048 | { | |
4049 | bfd *input_bfd; | |
4050 | ||
4051 | for (input_bfd = info->input_bfds; | |
4052 | input_bfd != NULL; | |
4053 | input_bfd = input_bfd->link.next) | |
4054 | { | |
4055 | asection *section; | |
4056 | ||
4057 | for (section = input_bfd->sections; | |
4058 | section != NULL; | |
4059 | section = section->next) | |
4060 | if (!_bfd_aarch64_erratum_843419_scan (input_bfd, section, info)) | |
4061 | return FALSE; | |
4062 | } | |
4063 | ||
4064 | _bfd_aarch64_resize_stubs (htab); | |
4065 | (*htab->layout_sections_again) (); | |
5421cc6e MS |
4066 | } |
4067 | ||
a06ea964 NC |
4068 | while (1) |
4069 | { | |
4070 | bfd *input_bfd; | |
a06ea964 | 4071 | |
9b9971aa MS |
4072 | for (input_bfd = info->input_bfds; |
4073 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
a06ea964 NC |
4074 | { |
4075 | Elf_Internal_Shdr *symtab_hdr; | |
4076 | asection *section; | |
4077 | Elf_Internal_Sym *local_syms = NULL; | |
4078 | ||
4079 | /* We'll need the symbol table in a second. */ | |
4080 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
4081 | if (symtab_hdr->sh_info == 0) | |
4082 | continue; | |
4083 | ||
4084 | /* Walk over each section attached to the input bfd. */ | |
4085 | for (section = input_bfd->sections; | |
4086 | section != NULL; section = section->next) | |
4087 | { | |
4088 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
4089 | ||
4090 | /* If there aren't any relocs, then there's nothing more | |
4091 | to do. */ | |
4092 | if ((section->flags & SEC_RELOC) == 0 | |
4093 | || section->reloc_count == 0 | |
4094 | || (section->flags & SEC_CODE) == 0) | |
4095 | continue; | |
4096 | ||
4097 | /* If this section is a link-once section that will be | |
4098 | discarded, then don't create any stubs. */ | |
4099 | if (section->output_section == NULL | |
4100 | || section->output_section->owner != output_bfd) | |
4101 | continue; | |
4102 | ||
4103 | /* Get the relocs. */ | |
4104 | internal_relocs | |
4105 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, | |
4106 | NULL, info->keep_memory); | |
4107 | if (internal_relocs == NULL) | |
4108 | goto error_ret_free_local; | |
4109 | ||
4110 | /* Now examine each relocation. */ | |
4111 | irela = internal_relocs; | |
4112 | irelaend = irela + section->reloc_count; | |
4113 | for (; irela < irelaend; irela++) | |
4114 | { | |
4115 | unsigned int r_type, r_indx; | |
cec5225b YZ |
4116 | enum elf_aarch64_stub_type stub_type; |
4117 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
a06ea964 NC |
4118 | asection *sym_sec; |
4119 | bfd_vma sym_value; | |
4120 | bfd_vma destination; | |
cec5225b | 4121 | struct elf_aarch64_link_hash_entry *hash; |
a06ea964 NC |
4122 | const char *sym_name; |
4123 | char *stub_name; | |
4124 | const asection *id_sec; | |
4125 | unsigned char st_type; | |
4126 | bfd_size_type len; | |
4127 | ||
cec5225b YZ |
4128 | r_type = ELFNN_R_TYPE (irela->r_info); |
4129 | r_indx = ELFNN_R_SYM (irela->r_info); | |
a06ea964 NC |
4130 | |
4131 | if (r_type >= (unsigned int) R_AARCH64_end) | |
4132 | { | |
4133 | bfd_set_error (bfd_error_bad_value); | |
4134 | error_ret_free_internal: | |
4135 | if (elf_section_data (section)->relocs == NULL) | |
4136 | free (internal_relocs); | |
4137 | goto error_ret_free_local; | |
4138 | } | |
4139 | ||
4140 | /* Only look for stubs on unconditional branch and | |
4141 | branch and link instructions. */ | |
a6bb11b2 YZ |
4142 | if (r_type != (unsigned int) AARCH64_R (CALL26) |
4143 | && r_type != (unsigned int) AARCH64_R (JUMP26)) | |
a06ea964 NC |
4144 | continue; |
4145 | ||
4146 | /* Now determine the call target, its name, value, | |
4147 | section. */ | |
4148 | sym_sec = NULL; | |
4149 | sym_value = 0; | |
4150 | destination = 0; | |
4151 | hash = NULL; | |
4152 | sym_name = NULL; | |
4153 | if (r_indx < symtab_hdr->sh_info) | |
4154 | { | |
4155 | /* It's a local symbol. */ | |
4156 | Elf_Internal_Sym *sym; | |
4157 | Elf_Internal_Shdr *hdr; | |
4158 | ||
4159 | if (local_syms == NULL) | |
4160 | { | |
4161 | local_syms | |
4162 | = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4163 | if (local_syms == NULL) | |
4164 | local_syms | |
4165 | = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
4166 | symtab_hdr->sh_info, 0, | |
4167 | NULL, NULL, NULL); | |
4168 | if (local_syms == NULL) | |
4169 | goto error_ret_free_internal; | |
4170 | } | |
4171 | ||
4172 | sym = local_syms + r_indx; | |
4173 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
4174 | sym_sec = hdr->bfd_section; | |
4175 | if (!sym_sec) | |
4176 | /* This is an undefined symbol. It can never | |
4177 | be resolved. */ | |
4178 | continue; | |
4179 | ||
4180 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
4181 | sym_value = sym->st_value; | |
4182 | destination = (sym_value + irela->r_addend | |
4183 | + sym_sec->output_offset | |
4184 | + sym_sec->output_section->vma); | |
4185 | st_type = ELF_ST_TYPE (sym->st_info); | |
4186 | sym_name | |
4187 | = bfd_elf_string_from_elf_section (input_bfd, | |
4188 | symtab_hdr->sh_link, | |
4189 | sym->st_name); | |
4190 | } | |
4191 | else | |
4192 | { | |
4193 | int e_indx; | |
4194 | ||
4195 | e_indx = r_indx - symtab_hdr->sh_info; | |
cec5225b | 4196 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
4197 | elf_sym_hashes (input_bfd)[e_indx]); |
4198 | ||
4199 | while (hash->root.root.type == bfd_link_hash_indirect | |
4200 | || hash->root.root.type == bfd_link_hash_warning) | |
cec5225b | 4201 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
4202 | hash->root.root.u.i.link); |
4203 | ||
4204 | if (hash->root.root.type == bfd_link_hash_defined | |
4205 | || hash->root.root.type == bfd_link_hash_defweak) | |
4206 | { | |
cec5225b YZ |
4207 | struct elf_aarch64_link_hash_table *globals = |
4208 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
4209 | sym_sec = hash->root.root.u.def.section; |
4210 | sym_value = hash->root.root.u.def.value; | |
4211 | /* For a destination in a shared library, | |
4212 | use the PLT stub as target address to | |
4213 | decide whether a branch stub is | |
4214 | needed. */ | |
4215 | if (globals->root.splt != NULL && hash != NULL | |
4216 | && hash->root.plt.offset != (bfd_vma) - 1) | |
4217 | { | |
4218 | sym_sec = globals->root.splt; | |
4219 | sym_value = hash->root.plt.offset; | |
4220 | if (sym_sec->output_section != NULL) | |
4221 | destination = (sym_value | |
4222 | + sym_sec->output_offset | |
4223 | + | |
4224 | sym_sec->output_section->vma); | |
4225 | } | |
4226 | else if (sym_sec->output_section != NULL) | |
4227 | destination = (sym_value + irela->r_addend | |
4228 | + sym_sec->output_offset | |
4229 | + sym_sec->output_section->vma); | |
4230 | } | |
4231 | else if (hash->root.root.type == bfd_link_hash_undefined | |
4232 | || (hash->root.root.type | |
4233 | == bfd_link_hash_undefweak)) | |
4234 | { | |
4235 | /* For a shared library, use the PLT stub as | |
4236 | target address to decide whether a long | |
4237 | branch stub is needed. | |
4238 | For absolute code, they cannot be handled. */ | |
cec5225b YZ |
4239 | struct elf_aarch64_link_hash_table *globals = |
4240 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
4241 | |
4242 | if (globals->root.splt != NULL && hash != NULL | |
4243 | && hash->root.plt.offset != (bfd_vma) - 1) | |
4244 | { | |
4245 | sym_sec = globals->root.splt; | |
4246 | sym_value = hash->root.plt.offset; | |
4247 | if (sym_sec->output_section != NULL) | |
4248 | destination = (sym_value | |
4249 | + sym_sec->output_offset | |
4250 | + | |
4251 | sym_sec->output_section->vma); | |
4252 | } | |
4253 | else | |
4254 | continue; | |
4255 | } | |
4256 | else | |
4257 | { | |
4258 | bfd_set_error (bfd_error_bad_value); | |
4259 | goto error_ret_free_internal; | |
4260 | } | |
4261 | st_type = ELF_ST_TYPE (hash->root.type); | |
4262 | sym_name = hash->root.root.root.string; | |
4263 | } | |
4264 | ||
4265 | /* Determine what (if any) linker stub is needed. */ | |
9a228467 JW |
4266 | stub_type = aarch64_type_of_stub (section, irela, sym_sec, |
4267 | st_type, destination); | |
a06ea964 NC |
4268 | if (stub_type == aarch64_stub_none) |
4269 | continue; | |
4270 | ||
4271 | /* Support for grouping stub sections. */ | |
4272 | id_sec = htab->stub_group[section->id].link_sec; | |
4273 | ||
4274 | /* Get the name of this stub. */ | |
cec5225b | 4275 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, hash, |
a06ea964 NC |
4276 | irela); |
4277 | if (!stub_name) | |
4278 | goto error_ret_free_internal; | |
4279 | ||
4280 | stub_entry = | |
4281 | aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
4282 | stub_name, FALSE, FALSE); | |
4283 | if (stub_entry != NULL) | |
4284 | { | |
4285 | /* The proper stub has already been created. */ | |
4286 | free (stub_name); | |
4287 | continue; | |
4288 | } | |
4289 | ||
ef857521 MS |
4290 | stub_entry = _bfd_aarch64_add_stub_entry_in_group |
4291 | (stub_name, section, htab); | |
a06ea964 NC |
4292 | if (stub_entry == NULL) |
4293 | { | |
4294 | free (stub_name); | |
4295 | goto error_ret_free_internal; | |
4296 | } | |
4297 | ||
2f340668 | 4298 | stub_entry->target_value = sym_value + irela->r_addend; |
a06ea964 NC |
4299 | stub_entry->target_section = sym_sec; |
4300 | stub_entry->stub_type = stub_type; | |
4301 | stub_entry->h = hash; | |
4302 | stub_entry->st_type = st_type; | |
4303 | ||
4304 | if (sym_name == NULL) | |
4305 | sym_name = "unnamed"; | |
4306 | len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name); | |
4307 | stub_entry->output_name = bfd_alloc (htab->stub_bfd, len); | |
4308 | if (stub_entry->output_name == NULL) | |
4309 | { | |
4310 | free (stub_name); | |
4311 | goto error_ret_free_internal; | |
4312 | } | |
4313 | ||
4314 | snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME, | |
4315 | sym_name); | |
4316 | ||
4317 | stub_changed = TRUE; | |
4318 | } | |
4319 | ||
4320 | /* We're done with the internal relocs, free them. */ | |
4321 | if (elf_section_data (section)->relocs == NULL) | |
4322 | free (internal_relocs); | |
4323 | } | |
4324 | } | |
4325 | ||
4326 | if (!stub_changed) | |
4327 | break; | |
4328 | ||
13f622ec | 4329 | _bfd_aarch64_resize_stubs (htab); |
a06ea964 NC |
4330 | |
4331 | /* Ask the linker to do its stuff. */ | |
4332 | (*htab->layout_sections_again) (); | |
4333 | stub_changed = FALSE; | |
4334 | } | |
4335 | ||
4336 | return TRUE; | |
4337 | ||
4338 | error_ret_free_local: | |
4339 | return FALSE; | |
4340 | } | |
4341 | ||
4342 | /* Build all the stubs associated with the current output file. The | |
4343 | stubs are kept in a hash table attached to the main linker hash | |
4344 | table. We also set up the .plt entries for statically linked PIC | |
4345 | functions here. This function is called via aarch64_elf_finish in the | |
4346 | linker. */ | |
4347 | ||
4348 | bfd_boolean | |
cec5225b | 4349 | elfNN_aarch64_build_stubs (struct bfd_link_info *info) |
a06ea964 NC |
4350 | { |
4351 | asection *stub_sec; | |
4352 | struct bfd_hash_table *table; | |
cec5225b | 4353 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 4354 | |
cec5225b | 4355 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
4356 | |
4357 | for (stub_sec = htab->stub_bfd->sections; | |
4358 | stub_sec != NULL; stub_sec = stub_sec->next) | |
4359 | { | |
4360 | bfd_size_type size; | |
4361 | ||
4362 | /* Ignore non-stub sections. */ | |
4363 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
4364 | continue; | |
4365 | ||
4366 | /* Allocate memory to hold the linker stubs. */ | |
4367 | size = stub_sec->size; | |
4368 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); | |
4369 | if (stub_sec->contents == NULL && size != 0) | |
4370 | return FALSE; | |
4371 | stub_sec->size = 0; | |
61865519 | 4372 | |
9a2ebffd JW |
4373 | /* Add a branch around the stub section, and a nop, to keep it 8 byte |
4374 | aligned, as long branch stubs contain a 64-bit address. */ | |
61865519 | 4375 | bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents); |
9a2ebffd JW |
4376 | bfd_putl32 (INSN_NOP, stub_sec->contents + 4); |
4377 | stub_sec->size += 8; | |
a06ea964 NC |
4378 | } |
4379 | ||
4380 | /* Build the stubs as directed by the stub hash table. */ | |
4381 | table = &htab->stub_hash_table; | |
4382 | bfd_hash_traverse (table, aarch64_build_one_stub, info); | |
4383 | ||
4384 | return TRUE; | |
4385 | } | |
4386 | ||
4387 | ||
4388 | /* Add an entry to the code/data map for section SEC. */ | |
4389 | ||
4390 | static void | |
cec5225b | 4391 | elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma) |
a06ea964 NC |
4392 | { |
4393 | struct _aarch64_elf_section_data *sec_data = | |
cec5225b | 4394 | elf_aarch64_section_data (sec); |
a06ea964 NC |
4395 | unsigned int newidx; |
4396 | ||
4397 | if (sec_data->map == NULL) | |
4398 | { | |
cec5225b | 4399 | sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
4400 | sec_data->mapcount = 0; |
4401 | sec_data->mapsize = 1; | |
4402 | } | |
4403 | ||
4404 | newidx = sec_data->mapcount++; | |
4405 | ||
4406 | if (sec_data->mapcount > sec_data->mapsize) | |
4407 | { | |
4408 | sec_data->mapsize *= 2; | |
4409 | sec_data->map = bfd_realloc_or_free | |
cec5225b | 4410 | (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
4411 | } |
4412 | ||
4413 | if (sec_data->map) | |
4414 | { | |
4415 | sec_data->map[newidx].vma = vma; | |
4416 | sec_data->map[newidx].type = type; | |
4417 | } | |
4418 | } | |
4419 | ||
4420 | ||
4421 | /* Initialise maps of insn/data for input BFDs. */ | |
4422 | void | |
cec5225b | 4423 | bfd_elfNN_aarch64_init_maps (bfd *abfd) |
a06ea964 NC |
4424 | { |
4425 | Elf_Internal_Sym *isymbuf; | |
4426 | Elf_Internal_Shdr *hdr; | |
4427 | unsigned int i, localsyms; | |
4428 | ||
4429 | /* Make sure that we are dealing with an AArch64 elf binary. */ | |
4430 | if (!is_aarch64_elf (abfd)) | |
4431 | return; | |
4432 | ||
4433 | if ((abfd->flags & DYNAMIC) != 0) | |
68fcca92 | 4434 | return; |
a06ea964 NC |
4435 | |
4436 | hdr = &elf_symtab_hdr (abfd); | |
4437 | localsyms = hdr->sh_info; | |
4438 | ||
4439 | /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field | |
4440 | should contain the number of local symbols, which should come before any | |
4441 | global symbols. Mapping symbols are always local. */ | |
4442 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL); | |
4443 | ||
4444 | /* No internal symbols read? Skip this BFD. */ | |
4445 | if (isymbuf == NULL) | |
4446 | return; | |
4447 | ||
4448 | for (i = 0; i < localsyms; i++) | |
4449 | { | |
4450 | Elf_Internal_Sym *isym = &isymbuf[i]; | |
4451 | asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4452 | const char *name; | |
4453 | ||
4454 | if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL) | |
4455 | { | |
4456 | name = bfd_elf_string_from_elf_section (abfd, | |
4457 | hdr->sh_link, | |
4458 | isym->st_name); | |
4459 | ||
4460 | if (bfd_is_aarch64_special_symbol_name | |
4461 | (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP)) | |
cec5225b | 4462 | elfNN_aarch64_section_map_add (sec, name[1], isym->st_value); |
a06ea964 NC |
4463 | } |
4464 | } | |
4465 | } | |
4466 | ||
4467 | /* Set option values needed during linking. */ | |
4468 | void | |
cec5225b | 4469 | bfd_elfNN_aarch64_set_options (struct bfd *output_bfd, |
a06ea964 NC |
4470 | struct bfd_link_info *link_info, |
4471 | int no_enum_warn, | |
68fcca92 | 4472 | int no_wchar_warn, int pic_veneer, |
4106101c | 4473 | int fix_erratum_835769, |
1f56df9d JW |
4474 | int fix_erratum_843419, |
4475 | int no_apply_dynamic_relocs) | |
a06ea964 | 4476 | { |
cec5225b | 4477 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 4478 | |
cec5225b | 4479 | globals = elf_aarch64_hash_table (link_info); |
a06ea964 | 4480 | globals->pic_veneer = pic_veneer; |
68fcca92 | 4481 | globals->fix_erratum_835769 = fix_erratum_835769; |
4106101c MS |
4482 | globals->fix_erratum_843419 = fix_erratum_843419; |
4483 | globals->fix_erratum_843419_adr = TRUE; | |
1f56df9d | 4484 | globals->no_apply_dynamic_relocs = no_apply_dynamic_relocs; |
a06ea964 NC |
4485 | |
4486 | BFD_ASSERT (is_aarch64_elf (output_bfd)); | |
4487 | elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn; | |
4488 | elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn; | |
4489 | } | |
4490 | ||
a06ea964 NC |
4491 | static bfd_vma |
4492 | aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h, | |
cec5225b | 4493 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
4494 | *globals, struct bfd_link_info *info, |
4495 | bfd_vma value, bfd *output_bfd, | |
4496 | bfd_boolean *unresolved_reloc_p) | |
4497 | { | |
4498 | bfd_vma off = (bfd_vma) - 1; | |
4499 | asection *basegot = globals->root.sgot; | |
4500 | bfd_boolean dyn = globals->root.dynamic_sections_created; | |
4501 | ||
4502 | if (h != NULL) | |
4503 | { | |
a6bb11b2 | 4504 | BFD_ASSERT (basegot != NULL); |
a06ea964 NC |
4505 | off = h->got.offset; |
4506 | BFD_ASSERT (off != (bfd_vma) - 1); | |
0e1862bb L |
4507 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h) |
4508 | || (bfd_link_pic (info) | |
a06ea964 NC |
4509 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
4510 | || (ELF_ST_VISIBILITY (h->other) | |
4511 | && h->root.type == bfd_link_hash_undefweak)) | |
4512 | { | |
4513 | /* This is actually a static link, or it is a -Bsymbolic link | |
4514 | and the symbol is defined locally. We must initialize this | |
4515 | entry in the global offset table. Since the offset must | |
a6bb11b2 YZ |
4516 | always be a multiple of 8 (4 in the case of ILP32), we use |
4517 | the least significant bit to record whether we have | |
4518 | initialized it already. | |
a06ea964 NC |
4519 | When doing a dynamic link, we create a .rel(a).got relocation |
4520 | entry to initialize the value. This is done in the | |
4521 | finish_dynamic_symbol routine. */ | |
4522 | if ((off & 1) != 0) | |
4523 | off &= ~1; | |
4524 | else | |
4525 | { | |
cec5225b | 4526 | bfd_put_NN (output_bfd, value, basegot->contents + off); |
a06ea964 NC |
4527 | h->got.offset |= 1; |
4528 | } | |
4529 | } | |
4530 | else | |
4531 | *unresolved_reloc_p = FALSE; | |
4532 | ||
4533 | off = off + basegot->output_section->vma + basegot->output_offset; | |
4534 | } | |
4535 | ||
4536 | return off; | |
4537 | } | |
4538 | ||
4539 | /* Change R_TYPE to a more efficient access model where possible, | |
4540 | return the new reloc type. */ | |
4541 | ||
a6bb11b2 YZ |
4542 | static bfd_reloc_code_real_type |
4543 | aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type, | |
a06ea964 NC |
4544 | struct elf_link_hash_entry *h) |
4545 | { | |
4546 | bfd_boolean is_local = h == NULL; | |
a6bb11b2 | 4547 | |
a06ea964 NC |
4548 | switch (r_type) |
4549 | { | |
a6bb11b2 | 4550 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 4551 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a6bb11b2 YZ |
4552 | return (is_local |
4553 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4554 | : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21); | |
4555 | ||
389b8029 MS |
4556 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
4557 | return (is_local | |
4558 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4559 | : r_type); | |
4560 | ||
1ada945d MS |
4561 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
4562 | return (is_local | |
4563 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4564 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4565 | ||
0484b454 RL |
4566 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
4567 | return (is_local | |
4568 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4569 | : BFD_RELOC_AARCH64_NONE); | |
4570 | ||
4571 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
4572 | return (is_local | |
4573 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC | |
4574 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC); | |
4575 | ||
4576 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
4577 | return (is_local | |
4578 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 | |
4579 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1); | |
4580 | ||
a6bb11b2 | 4581 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
ce336788 | 4582 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 YZ |
4583 | return (is_local |
4584 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4585 | : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC); | |
4586 | ||
4587 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: | |
4588 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type; | |
4589 | ||
4590 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
4591 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type; | |
4592 | ||
043bf05a MS |
4593 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
4594 | return r_type; | |
4595 | ||
3c12b054 MS |
4596 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
4597 | return (is_local | |
4598 | ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 | |
4599 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4600 | ||
0484b454 | 4601 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
f955cccf | 4602 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 4603 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a06ea964 | 4604 | /* Instructions with these relocations will become NOPs. */ |
a6bb11b2 YZ |
4605 | return BFD_RELOC_AARCH64_NONE; |
4606 | ||
259364ad JW |
4607 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
4608 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: | |
4609 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: | |
4610 | return is_local ? BFD_RELOC_AARCH64_NONE : r_type; | |
4611 | ||
ac734732 RL |
4612 | #if ARCH_SIZE == 64 |
4613 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: | |
4614 | return is_local | |
4615 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC | |
4616 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC; | |
4617 | ||
4618 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: | |
4619 | return is_local | |
4620 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 | |
4621 | : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1; | |
4622 | #endif | |
4623 | ||
a6bb11b2 YZ |
4624 | default: |
4625 | break; | |
a06ea964 NC |
4626 | } |
4627 | ||
4628 | return r_type; | |
4629 | } | |
4630 | ||
4631 | static unsigned int | |
a6bb11b2 | 4632 | aarch64_reloc_got_type (bfd_reloc_code_real_type r_type) |
a06ea964 NC |
4633 | { |
4634 | switch (r_type) | |
4635 | { | |
a6bb11b2 YZ |
4636 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
4637 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 4638 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 4639 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 4640 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 4641 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 4642 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 4643 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 4644 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
a06ea964 NC |
4645 | return GOT_NORMAL; |
4646 | ||
ce336788 | 4647 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 4648 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 4649 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 4650 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 4651 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
73f925cc | 4652 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 4653 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 4654 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
4655 | return GOT_TLS_GD; |
4656 | ||
0484b454 | 4657 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
f955cccf | 4658 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 4659 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 4660 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 4661 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a6bb11b2 | 4662 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
f955cccf | 4663 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
1ada945d | 4664 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
4665 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
4666 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
4667 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a06ea964 NC |
4668 | return GOT_TLSDESC_GD; |
4669 | ||
a6bb11b2 | 4670 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 4671 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 4672 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 4673 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
4674 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
4675 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
a06ea964 NC |
4676 | return GOT_TLS_IE; |
4677 | ||
a6bb11b2 YZ |
4678 | default: |
4679 | break; | |
a06ea964 NC |
4680 | } |
4681 | return GOT_UNKNOWN; | |
4682 | } | |
4683 | ||
4684 | static bfd_boolean | |
4685 | aarch64_can_relax_tls (bfd *input_bfd, | |
4686 | struct bfd_link_info *info, | |
a6bb11b2 | 4687 | bfd_reloc_code_real_type r_type, |
a06ea964 NC |
4688 | struct elf_link_hash_entry *h, |
4689 | unsigned long r_symndx) | |
4690 | { | |
4691 | unsigned int symbol_got_type; | |
4692 | unsigned int reloc_got_type; | |
4693 | ||
9331eea1 | 4694 | if (! IS_AARCH64_TLS_RELAX_RELOC (r_type)) |
a06ea964 NC |
4695 | return FALSE; |
4696 | ||
cec5225b | 4697 | symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx); |
a06ea964 NC |
4698 | reloc_got_type = aarch64_reloc_got_type (r_type); |
4699 | ||
4700 | if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type)) | |
4701 | return TRUE; | |
4702 | ||
6dda7875 | 4703 | if (!bfd_link_executable (info)) |
a06ea964 NC |
4704 | return FALSE; |
4705 | ||
4706 | if (h && h->root.type == bfd_link_hash_undefweak) | |
4707 | return FALSE; | |
4708 | ||
4709 | return TRUE; | |
4710 | } | |
4711 | ||
a6bb11b2 YZ |
4712 | /* Given the relocation code R_TYPE, return the relaxed bfd reloc |
4713 | enumerator. */ | |
4714 | ||
4715 | static bfd_reloc_code_real_type | |
a06ea964 NC |
4716 | aarch64_tls_transition (bfd *input_bfd, |
4717 | struct bfd_link_info *info, | |
4718 | unsigned int r_type, | |
4719 | struct elf_link_hash_entry *h, | |
4720 | unsigned long r_symndx) | |
4721 | { | |
a6bb11b2 | 4722 | bfd_reloc_code_real_type bfd_r_type |
0aa13fee | 4723 | = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
a06ea964 | 4724 | |
a6bb11b2 YZ |
4725 | if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx)) |
4726 | return bfd_r_type; | |
4727 | ||
4728 | return aarch64_tls_transition_without_check (bfd_r_type, h); | |
a06ea964 NC |
4729 | } |
4730 | ||
4731 | /* Return the base VMA address which should be subtracted from real addresses | |
a6bb11b2 | 4732 | when resolving R_AARCH64_TLS_DTPREL relocation. */ |
a06ea964 NC |
4733 | |
4734 | static bfd_vma | |
4735 | dtpoff_base (struct bfd_link_info *info) | |
4736 | { | |
4737 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
4738 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); | |
4739 | return elf_hash_table (info)->tls_sec->vma; | |
4740 | } | |
4741 | ||
a06ea964 NC |
4742 | /* Return the base VMA address which should be subtracted from real addresses |
4743 | when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */ | |
4744 | ||
4745 | static bfd_vma | |
4746 | tpoff_base (struct bfd_link_info *info) | |
4747 | { | |
4748 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
4749 | ||
4750 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
ac21917f | 4751 | BFD_ASSERT (htab->tls_sec != NULL); |
a06ea964 NC |
4752 | |
4753 | bfd_vma base = align_power ((bfd_vma) TCB_SIZE, | |
4754 | htab->tls_sec->alignment_power); | |
4755 | return htab->tls_sec->vma - base; | |
4756 | } | |
4757 | ||
4758 | static bfd_vma * | |
4759 | symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4760 | unsigned long r_symndx) | |
4761 | { | |
4762 | /* Calculate the address of the GOT entry for symbol | |
4763 | referred to in h. */ | |
4764 | if (h != NULL) | |
4765 | return &h->got.offset; | |
4766 | else | |
4767 | { | |
4768 | /* local symbol */ | |
4769 | struct elf_aarch64_local_symbol *l; | |
4770 | ||
cec5225b | 4771 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
4772 | return &l[r_symndx].got_offset; |
4773 | } | |
4774 | } | |
4775 | ||
4776 | static void | |
4777 | symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4778 | unsigned long r_symndx) | |
4779 | { | |
4780 | bfd_vma *p; | |
4781 | p = symbol_got_offset_ref (input_bfd, h, r_symndx); | |
4782 | *p |= 1; | |
4783 | } | |
4784 | ||
4785 | static int | |
4786 | symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4787 | unsigned long r_symndx) | |
4788 | { | |
4789 | bfd_vma value; | |
4790 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
4791 | return value & 1; | |
4792 | } | |
4793 | ||
4794 | static bfd_vma | |
4795 | symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4796 | unsigned long r_symndx) | |
4797 | { | |
4798 | bfd_vma value; | |
4799 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
4800 | value &= ~1; | |
4801 | return value; | |
4802 | } | |
4803 | ||
4804 | static bfd_vma * | |
4805 | symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4806 | unsigned long r_symndx) | |
4807 | { | |
4808 | /* Calculate the address of the GOT entry for symbol | |
4809 | referred to in h. */ | |
4810 | if (h != NULL) | |
4811 | { | |
cec5225b YZ |
4812 | struct elf_aarch64_link_hash_entry *eh; |
4813 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
4814 | return &eh->tlsdesc_got_jump_table_offset; |
4815 | } | |
4816 | else | |
4817 | { | |
4818 | /* local symbol */ | |
4819 | struct elf_aarch64_local_symbol *l; | |
4820 | ||
cec5225b | 4821 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
4822 | return &l[r_symndx].tlsdesc_got_jump_table_offset; |
4823 | } | |
4824 | } | |
4825 | ||
4826 | static void | |
4827 | symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4828 | unsigned long r_symndx) | |
4829 | { | |
4830 | bfd_vma *p; | |
4831 | p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
4832 | *p |= 1; | |
4833 | } | |
4834 | ||
4835 | static int | |
4836 | symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd, | |
4837 | struct elf_link_hash_entry *h, | |
4838 | unsigned long r_symndx) | |
4839 | { | |
4840 | bfd_vma value; | |
4841 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
4842 | return value & 1; | |
4843 | } | |
4844 | ||
4845 | static bfd_vma | |
4846 | symbol_tlsdesc_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4847 | unsigned long r_symndx) | |
4848 | { | |
4849 | bfd_vma value; | |
4850 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
4851 | value &= ~1; | |
4852 | return value; | |
4853 | } | |
4854 | ||
68fcca92 JW |
4855 | /* Data for make_branch_to_erratum_835769_stub(). */ |
4856 | ||
4857 | struct erratum_835769_branch_to_stub_data | |
4858 | { | |
4106101c | 4859 | struct bfd_link_info *info; |
68fcca92 JW |
4860 | asection *output_section; |
4861 | bfd_byte *contents; | |
4862 | }; | |
4863 | ||
4864 | /* Helper to insert branches to erratum 835769 stubs in the right | |
4865 | places for a particular section. */ | |
4866 | ||
4867 | static bfd_boolean | |
4868 | make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry, | |
4869 | void *in_arg) | |
4870 | { | |
4871 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
4872 | struct erratum_835769_branch_to_stub_data *data; | |
4873 | bfd_byte *contents; | |
4874 | unsigned long branch_insn = 0; | |
4875 | bfd_vma veneered_insn_loc, veneer_entry_loc; | |
4876 | bfd_signed_vma branch_offset; | |
4877 | unsigned int target; | |
4878 | bfd *abfd; | |
4879 | ||
4880 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
4881 | data = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
4882 | ||
4883 | if (stub_entry->target_section != data->output_section | |
4884 | || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer) | |
4885 | return TRUE; | |
4886 | ||
4887 | contents = data->contents; | |
4888 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
4889 | + stub_entry->target_section->output_offset | |
4890 | + stub_entry->target_value; | |
4891 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
4892 | + stub_entry->stub_sec->output_offset | |
4893 | + stub_entry->stub_offset; | |
4894 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
4895 | ||
4896 | abfd = stub_entry->target_section->owner; | |
4897 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4eca0228 | 4898 | _bfd_error_handler |
90b6238f | 4899 | (_("%pB: error: erratum 835769 stub out " |
4eca0228 | 4900 | "of range (input file too large)"), abfd); |
68fcca92 JW |
4901 | |
4902 | target = stub_entry->target_value; | |
4903 | branch_insn = 0x14000000; | |
4904 | branch_offset >>= 2; | |
4905 | branch_offset &= 0x3ffffff; | |
4906 | branch_insn |= branch_offset; | |
4907 | bfd_putl32 (branch_insn, &contents[target]); | |
4908 | ||
4909 | return TRUE; | |
4910 | } | |
4911 | ||
4106101c MS |
4912 | |
4913 | static bfd_boolean | |
4914 | _bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry, | |
4915 | void *in_arg) | |
4916 | { | |
4917 | struct elf_aarch64_stub_hash_entry *stub_entry | |
4918 | = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
4919 | struct erratum_835769_branch_to_stub_data *data | |
4920 | = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
4921 | struct bfd_link_info *info; | |
4922 | struct elf_aarch64_link_hash_table *htab; | |
4923 | bfd_byte *contents; | |
4924 | asection *section; | |
4925 | bfd *abfd; | |
4926 | bfd_vma place; | |
4927 | uint32_t insn; | |
4928 | ||
4929 | info = data->info; | |
4930 | contents = data->contents; | |
4931 | section = data->output_section; | |
4932 | ||
4933 | htab = elf_aarch64_hash_table (info); | |
4934 | ||
4935 | if (stub_entry->target_section != section | |
4936 | || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer) | |
4937 | return TRUE; | |
4938 | ||
4939 | insn = bfd_getl32 (contents + stub_entry->target_value); | |
4940 | bfd_putl32 (insn, | |
4941 | stub_entry->stub_sec->contents + stub_entry->stub_offset); | |
4942 | ||
4943 | place = (section->output_section->vma + section->output_offset | |
4944 | + stub_entry->adrp_offset); | |
4945 | insn = bfd_getl32 (contents + stub_entry->adrp_offset); | |
4946 | ||
4947 | if ((insn & AARCH64_ADRP_OP_MASK) != AARCH64_ADRP_OP) | |
4948 | abort (); | |
4949 | ||
4950 | bfd_signed_vma imm = | |
4951 | (_bfd_aarch64_sign_extend | |
4952 | ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33) | |
4953 | - (place & 0xfff)); | |
4954 | ||
4955 | if (htab->fix_erratum_843419_adr | |
4956 | && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM)) | |
4957 | { | |
4958 | insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm) | |
4959 | | AARCH64_RT (insn)); | |
4960 | bfd_putl32 (insn, contents + stub_entry->adrp_offset); | |
4961 | } | |
4962 | else | |
4963 | { | |
4964 | bfd_vma veneered_insn_loc; | |
4965 | bfd_vma veneer_entry_loc; | |
4966 | bfd_signed_vma branch_offset; | |
4967 | uint32_t branch_insn; | |
4968 | ||
4969 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
4970 | + stub_entry->target_section->output_offset | |
4971 | + stub_entry->target_value; | |
4972 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
4973 | + stub_entry->stub_sec->output_offset | |
4974 | + stub_entry->stub_offset; | |
4975 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
4976 | ||
4977 | abfd = stub_entry->target_section->owner; | |
4978 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4eca0228 | 4979 | _bfd_error_handler |
90b6238f | 4980 | (_("%pB: error: erratum 843419 stub out " |
4106101c MS |
4981 | "of range (input file too large)"), abfd); |
4982 | ||
4983 | branch_insn = 0x14000000; | |
4984 | branch_offset >>= 2; | |
4985 | branch_offset &= 0x3ffffff; | |
4986 | branch_insn |= branch_offset; | |
4987 | bfd_putl32 (branch_insn, contents + stub_entry->target_value); | |
4988 | } | |
4989 | return TRUE; | |
4990 | } | |
4991 | ||
4992 | ||
68fcca92 JW |
4993 | static bfd_boolean |
4994 | elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, | |
4995 | struct bfd_link_info *link_info, | |
4996 | asection *sec, | |
4997 | bfd_byte *contents) | |
4998 | ||
4999 | { | |
5000 | struct elf_aarch64_link_hash_table *globals = | |
f872121a | 5001 | elf_aarch64_hash_table (link_info); |
68fcca92 JW |
5002 | |
5003 | if (globals == NULL) | |
5004 | return FALSE; | |
5005 | ||
5006 | /* Fix code to point to erratum 835769 stubs. */ | |
5007 | if (globals->fix_erratum_835769) | |
5008 | { | |
5009 | struct erratum_835769_branch_to_stub_data data; | |
5010 | ||
4106101c | 5011 | data.info = link_info; |
68fcca92 JW |
5012 | data.output_section = sec; |
5013 | data.contents = contents; | |
5014 | bfd_hash_traverse (&globals->stub_hash_table, | |
5015 | make_branch_to_erratum_835769_stub, &data); | |
5016 | } | |
5017 | ||
4106101c MS |
5018 | if (globals->fix_erratum_843419) |
5019 | { | |
5020 | struct erratum_835769_branch_to_stub_data data; | |
5021 | ||
5022 | data.info = link_info; | |
5023 | data.output_section = sec; | |
5024 | data.contents = contents; | |
5025 | bfd_hash_traverse (&globals->stub_hash_table, | |
5026 | _bfd_aarch64_erratum_843419_branch_to_stub, &data); | |
5027 | } | |
5028 | ||
68fcca92 JW |
5029 | return FALSE; |
5030 | } | |
5031 | ||
2aff25ba JW |
5032 | /* Return TRUE if RELOC is a relocation against the base of GOT table. */ |
5033 | ||
5034 | static bfd_boolean | |
5035 | aarch64_relocation_aginst_gp_p (bfd_reloc_code_real_type reloc) | |
5036 | { | |
5037 | return (reloc == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14 | |
5038 | || reloc == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 | |
5039 | || reloc == BFD_RELOC_AARCH64_LD64_GOTOFF_LO15 | |
5040 | || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC | |
5041 | || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G1); | |
5042 | } | |
5043 | ||
4e7fbb34 JW |
5044 | /* Perform a relocation as part of a final link. The input relocation type |
5045 | should be TLS relaxed. */ | |
5046 | ||
a06ea964 | 5047 | static bfd_reloc_status_type |
cec5225b | 5048 | elfNN_aarch64_final_link_relocate (reloc_howto_type *howto, |
a06ea964 NC |
5049 | bfd *input_bfd, |
5050 | bfd *output_bfd, | |
5051 | asection *input_section, | |
5052 | bfd_byte *contents, | |
5053 | Elf_Internal_Rela *rel, | |
5054 | bfd_vma value, | |
5055 | struct bfd_link_info *info, | |
5056 | asection *sym_sec, | |
5057 | struct elf_link_hash_entry *h, | |
5058 | bfd_boolean *unresolved_reloc_p, | |
5059 | bfd_boolean save_addend, | |
1419bbe5 WN |
5060 | bfd_vma *saved_addend, |
5061 | Elf_Internal_Sym *sym) | |
a06ea964 | 5062 | { |
1419bbe5 | 5063 | Elf_Internal_Shdr *symtab_hdr; |
a06ea964 | 5064 | unsigned int r_type = howto->type; |
a6bb11b2 YZ |
5065 | bfd_reloc_code_real_type bfd_r_type |
5066 | = elfNN_aarch64_bfd_reloc_from_howto (howto); | |
a06ea964 NC |
5067 | unsigned long r_symndx; |
5068 | bfd_byte *hit_data = contents + rel->r_offset; | |
96d01d93 | 5069 | bfd_vma place, off, got_entry_addr = 0; |
a06ea964 | 5070 | bfd_signed_vma signed_addend; |
cec5225b | 5071 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 5072 | bfd_boolean weak_undef_p; |
ff07562f | 5073 | bfd_boolean relative_reloc; |
b53b1bed | 5074 | asection *base_got; |
ff07562f | 5075 | bfd_vma orig_value = value; |
ddb7fd0f | 5076 | bfd_boolean resolved_to_zero; |
0c1ded8d | 5077 | bfd_boolean abs_symbol_p; |
a06ea964 | 5078 | |
cec5225b | 5079 | globals = elf_aarch64_hash_table (info); |
a06ea964 | 5080 | |
1419bbe5 WN |
5081 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5082 | ||
a06ea964 NC |
5083 | BFD_ASSERT (is_aarch64_elf (input_bfd)); |
5084 | ||
cec5225b | 5085 | r_symndx = ELFNN_R_SYM (rel->r_info); |
a06ea964 | 5086 | |
a06ea964 NC |
5087 | place = input_section->output_section->vma |
5088 | + input_section->output_offset + rel->r_offset; | |
5089 | ||
5090 | /* Get addend, accumulating the addend for consecutive relocs | |
5091 | which refer to the same offset. */ | |
5092 | signed_addend = saved_addend ? *saved_addend : 0; | |
5093 | signed_addend += rel->r_addend; | |
5094 | ||
5095 | weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak | |
5096 | : bfd_is_und_section (sym_sec)); | |
0c1ded8d RL |
5097 | abs_symbol_p = (h !=NULL && h->root.type == bfd_link_hash_defined |
5098 | && bfd_is_abs_section (h->root.u.def.section)); | |
5099 | ||
a6bb11b2 | 5100 | |
1419bbe5 WN |
5101 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
5102 | it here if it is defined in a non-shared object. */ | |
5103 | if (h != NULL | |
5104 | && h->type == STT_GNU_IFUNC | |
5105 | && h->def_regular) | |
5106 | { | |
5107 | asection *plt; | |
5108 | const char *name; | |
99ad26cb | 5109 | bfd_vma addend = 0; |
1419bbe5 | 5110 | |
545bc2b3 SN |
5111 | if ((input_section->flags & SEC_ALLOC) == 0) |
5112 | { | |
f657f8c4 NC |
5113 | /* If this is a SHT_NOTE section without SHF_ALLOC, treat |
5114 | STT_GNU_IFUNC symbol as STT_FUNC. */ | |
5115 | if (elf_section_type (input_section) == SHT_NOTE) | |
5116 | goto skip_ifunc; | |
5117 | ||
545bc2b3 SN |
5118 | /* Dynamic relocs are not propagated for SEC_DEBUGGING |
5119 | sections because such sections are not SEC_ALLOC and | |
5120 | thus ld.so will not process them. */ | |
5121 | if ((input_section->flags & SEC_DEBUGGING) != 0) | |
5122 | return bfd_reloc_ok; | |
5123 | ||
5124 | if (h->root.root.string) | |
5125 | name = h->root.root.string; | |
5126 | else | |
5127 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, NULL); | |
5128 | _bfd_error_handler | |
5129 | /* xgettext:c-format */ | |
2dcf00ce AM |
5130 | (_("%pB(%pA+%#" PRIx64 "): " |
5131 | "unresolvable %s relocation against symbol `%s'"), | |
5132 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
5133 | howto->name, name); | |
545bc2b3 | 5134 | bfd_set_error (bfd_error_bad_value); |
1d75a8e2 | 5135 | return bfd_reloc_notsupported; |
545bc2b3 SN |
5136 | } |
5137 | else if (h->plt.offset == (bfd_vma) -1) | |
5138 | goto bad_ifunc_reloc; | |
1419bbe5 WN |
5139 | |
5140 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
5141 | plt = globals->root.splt ? globals->root.splt : globals->root.iplt; | |
5142 | value = (plt->output_section->vma + plt->output_offset + h->plt.offset); | |
5143 | ||
5144 | switch (bfd_r_type) | |
5145 | { | |
5146 | default: | |
545bc2b3 | 5147 | bad_ifunc_reloc: |
1419bbe5 WN |
5148 | if (h->root.root.string) |
5149 | name = h->root.root.string; | |
5150 | else | |
5151 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
5152 | NULL); | |
4eca0228 | 5153 | _bfd_error_handler |
695344c0 | 5154 | /* xgettext:c-format */ |
871b3ab2 | 5155 | (_("%pB: relocation %s against STT_GNU_IFUNC " |
1419bbe5 WN |
5156 | "symbol `%s' isn't handled by %s"), input_bfd, |
5157 | howto->name, name, __FUNCTION__); | |
5158 | bfd_set_error (bfd_error_bad_value); | |
1d75a8e2 | 5159 | return bfd_reloc_notsupported; |
1419bbe5 WN |
5160 | |
5161 | case BFD_RELOC_AARCH64_NN: | |
5162 | if (rel->r_addend != 0) | |
5163 | { | |
5164 | if (h->root.root.string) | |
5165 | name = h->root.root.string; | |
5166 | else | |
5167 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
5168 | sym, NULL); | |
4eca0228 | 5169 | _bfd_error_handler |
695344c0 | 5170 | /* xgettext:c-format */ |
871b3ab2 | 5171 | (_("%pB: relocation %s against STT_GNU_IFUNC " |
2dcf00ce AM |
5172 | "symbol `%s' has non-zero addend: %" PRId64), |
5173 | input_bfd, howto->name, name, (int64_t) rel->r_addend); | |
1419bbe5 | 5174 | bfd_set_error (bfd_error_bad_value); |
1d75a8e2 | 5175 | return bfd_reloc_notsupported; |
1419bbe5 WN |
5176 | } |
5177 | ||
5178 | /* Generate dynamic relocation only when there is a | |
5179 | non-GOT reference in a shared object. */ | |
0e1862bb | 5180 | if (bfd_link_pic (info) && h->non_got_ref) |
1419bbe5 WN |
5181 | { |
5182 | Elf_Internal_Rela outrel; | |
5183 | asection *sreloc; | |
5184 | ||
5185 | /* Need a dynamic relocation to get the real function | |
5186 | address. */ | |
5187 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
5188 | info, | |
5189 | input_section, | |
5190 | rel->r_offset); | |
5191 | if (outrel.r_offset == (bfd_vma) -1 | |
5192 | || outrel.r_offset == (bfd_vma) -2) | |
5193 | abort (); | |
5194 | ||
5195 | outrel.r_offset += (input_section->output_section->vma | |
5196 | + input_section->output_offset); | |
5197 | ||
5198 | if (h->dynindx == -1 | |
5199 | || h->forced_local | |
0e1862bb | 5200 | || bfd_link_executable (info)) |
1419bbe5 WN |
5201 | { |
5202 | /* This symbol is resolved locally. */ | |
5203 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
5204 | outrel.r_addend = (h->root.u.def.value | |
5205 | + h->root.u.def.section->output_section->vma | |
5206 | + h->root.u.def.section->output_offset); | |
5207 | } | |
5208 | else | |
5209 | { | |
5210 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); | |
5211 | outrel.r_addend = 0; | |
5212 | } | |
5213 | ||
5214 | sreloc = globals->root.irelifunc; | |
5215 | elf_append_rela (output_bfd, sreloc, &outrel); | |
5216 | ||
5217 | /* If this reloc is against an external symbol, we | |
5218 | do not want to fiddle with the addend. Otherwise, | |
5219 | we need to include the symbol value so that it | |
5220 | becomes an addend for the dynamic reloc. For an | |
5221 | internal symbol, we have updated addend. */ | |
5222 | return bfd_reloc_ok; | |
5223 | } | |
5224 | /* FALLTHROUGH */ | |
1419bbe5 | 5225 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 5226 | case BFD_RELOC_AARCH64_JUMP26: |
1419bbe5 WN |
5227 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5228 | signed_addend, | |
5229 | weak_undef_p); | |
5230 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, | |
5231 | howto, value); | |
1419bbe5 WN |
5232 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
5233 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 5234 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 5235 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 5236 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
dc8008f5 | 5237 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 5238 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
a2e1db00 | 5239 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
ce336788 | 5240 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
1419bbe5 WN |
5241 | base_got = globals->root.sgot; |
5242 | off = h->got.offset; | |
5243 | ||
5244 | if (base_got == NULL) | |
5245 | abort (); | |
5246 | ||
5247 | if (off == (bfd_vma) -1) | |
5248 | { | |
5249 | bfd_vma plt_index; | |
5250 | ||
5251 | /* We can't use h->got.offset here to save state, or | |
5252 | even just remember the offset, as finish_dynamic_symbol | |
5253 | would use that as offset into .got. */ | |
5254 | ||
5255 | if (globals->root.splt != NULL) | |
5256 | { | |
b1ee0cc4 WN |
5257 | plt_index = ((h->plt.offset - globals->plt_header_size) / |
5258 | globals->plt_entry_size); | |
1419bbe5 WN |
5259 | off = (plt_index + 3) * GOT_ENTRY_SIZE; |
5260 | base_got = globals->root.sgotplt; | |
5261 | } | |
5262 | else | |
5263 | { | |
5264 | plt_index = h->plt.offset / globals->plt_entry_size; | |
5265 | off = plt_index * GOT_ENTRY_SIZE; | |
5266 | base_got = globals->root.igotplt; | |
5267 | } | |
5268 | ||
5269 | if (h->dynindx == -1 | |
5270 | || h->forced_local | |
5271 | || info->symbolic) | |
5272 | { | |
5273 | /* This references the local definition. We must | |
5274 | initialize this entry in the global offset table. | |
5275 | Since the offset must always be a multiple of 8, | |
5276 | we use the least significant bit to record | |
5277 | whether we have initialized it already. | |
5278 | ||
5279 | When doing a dynamic link, we create a .rela.got | |
5280 | relocation entry to initialize the value. This | |
5281 | is done in the finish_dynamic_symbol routine. */ | |
5282 | if ((off & 1) != 0) | |
5283 | off &= ~1; | |
5284 | else | |
5285 | { | |
5286 | bfd_put_NN (output_bfd, value, | |
5287 | base_got->contents + off); | |
5288 | /* Note that this is harmless as -1 | 1 still is -1. */ | |
5289 | h->got.offset |= 1; | |
5290 | } | |
5291 | } | |
5292 | value = (base_got->output_section->vma | |
5293 | + base_got->output_offset + off); | |
5294 | } | |
5295 | else | |
5296 | value = aarch64_calculate_got_entry_vma (h, globals, info, | |
5297 | value, output_bfd, | |
5298 | unresolved_reloc_p); | |
a0becb89 | 5299 | |
2aff25ba JW |
5300 | if (aarch64_relocation_aginst_gp_p (bfd_r_type)) |
5301 | addend = (globals->root.sgot->output_section->vma | |
5302 | + globals->root.sgot->output_offset); | |
a0becb89 | 5303 | |
1419bbe5 | 5304 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
99ad26cb | 5305 | addend, weak_undef_p); |
1419bbe5 | 5306 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value); |
1419bbe5 | 5307 | case BFD_RELOC_AARCH64_ADD_LO12: |
ce336788 | 5308 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: |
1419bbe5 WN |
5309 | break; |
5310 | } | |
5311 | } | |
5312 | ||
f657f8c4 | 5313 | skip_ifunc: |
ddb7fd0f L |
5314 | resolved_to_zero = (h != NULL |
5315 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
5316 | ||
a6bb11b2 | 5317 | switch (bfd_r_type) |
a06ea964 | 5318 | { |
a6bb11b2 | 5319 | case BFD_RELOC_AARCH64_NONE: |
0484b454 | 5320 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
a6bb11b2 | 5321 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
0484b454 | 5322 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
a06ea964 NC |
5323 | *unresolved_reloc_p = FALSE; |
5324 | return bfd_reloc_ok; | |
5325 | ||
a6bb11b2 | 5326 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
5327 | |
5328 | /* When generating a shared object or relocatable executable, these | |
07d6d2b8 AM |
5329 | relocations are copied into the output file to be resolved at |
5330 | run time. */ | |
6353d82b JW |
5331 | if (((bfd_link_pic (info) |
5332 | || globals->root.is_relocatable_executable) | |
5333 | && (input_section->flags & SEC_ALLOC) | |
5334 | && (h == NULL | |
ddb7fd0f L |
5335 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
5336 | && !resolved_to_zero) | |
6353d82b JW |
5337 | || h->root.type != bfd_link_hash_undefweak)) |
5338 | /* Or we are creating an executable, we may need to keep relocations | |
5339 | for symbols satisfied by a dynamic library if we manage to avoid | |
5340 | copy relocs for the symbol. */ | |
5341 | || (ELIMINATE_COPY_RELOCS | |
5342 | && !bfd_link_pic (info) | |
5343 | && h != NULL | |
5344 | && (input_section->flags & SEC_ALLOC) | |
5345 | && h->dynindx != -1 | |
5346 | && !h->non_got_ref | |
5347 | && ((h->def_dynamic | |
5348 | && !h->def_regular) | |
5349 | || h->root.type == bfd_link_hash_undefweak | |
5350 | || h->root.type == bfd_link_hash_undefined))) | |
a06ea964 NC |
5351 | { |
5352 | Elf_Internal_Rela outrel; | |
5353 | bfd_byte *loc; | |
5354 | bfd_boolean skip, relocate; | |
5355 | asection *sreloc; | |
5356 | ||
5357 | *unresolved_reloc_p = FALSE; | |
5358 | ||
a06ea964 NC |
5359 | skip = FALSE; |
5360 | relocate = FALSE; | |
5361 | ||
5362 | outrel.r_addend = signed_addend; | |
5363 | outrel.r_offset = | |
5364 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
5365 | rel->r_offset); | |
5366 | if (outrel.r_offset == (bfd_vma) - 1) | |
5367 | skip = TRUE; | |
5368 | else if (outrel.r_offset == (bfd_vma) - 2) | |
5369 | { | |
5370 | skip = TRUE; | |
5371 | relocate = TRUE; | |
5372 | } | |
0c1ded8d RL |
5373 | else if (abs_symbol_p) |
5374 | { | |
5375 | /* Local absolute symbol. */ | |
5376 | skip = (h->forced_local || (h->dynindx == -1)); | |
5377 | relocate = skip; | |
5378 | } | |
a06ea964 NC |
5379 | |
5380 | outrel.r_offset += (input_section->output_section->vma | |
5381 | + input_section->output_offset); | |
5382 | ||
5383 | if (skip) | |
5384 | memset (&outrel, 0, sizeof outrel); | |
5385 | else if (h != NULL | |
5386 | && h->dynindx != -1 | |
0e1862bb | 5387 | && (!bfd_link_pic (info) |
0c1ded8d | 5388 | || !(bfd_link_pie (info) || SYMBOLIC_BIND (info, h)) |
0e1862bb | 5389 | || !h->def_regular)) |
cec5225b | 5390 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); |
a06ea964 NC |
5391 | else |
5392 | { | |
5393 | int symbol; | |
5394 | ||
5395 | /* On SVR4-ish systems, the dynamic loader cannot | |
5396 | relocate the text and data segments independently, | |
5397 | so the symbol does not matter. */ | |
5398 | symbol = 0; | |
1f56df9d | 5399 | relocate = globals->no_apply_dynamic_relocs ? FALSE : TRUE; |
a6bb11b2 | 5400 | outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE)); |
a06ea964 NC |
5401 | outrel.r_addend += value; |
5402 | } | |
5403 | ||
1419bbe5 WN |
5404 | sreloc = elf_section_data (input_section)->sreloc; |
5405 | if (sreloc == NULL || sreloc->contents == NULL) | |
5406 | return bfd_reloc_notsupported; | |
5407 | ||
5408 | loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals); | |
cec5225b | 5409 | bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc); |
a06ea964 | 5410 | |
1419bbe5 | 5411 | if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size) |
a06ea964 NC |
5412 | { |
5413 | /* Sanity to check that we have previously allocated | |
5414 | sufficient space in the relocation section for the | |
5415 | number of relocations we actually want to emit. */ | |
5416 | abort (); | |
5417 | } | |
5418 | ||
5419 | /* If this reloc is against an external symbol, we do not want to | |
5420 | fiddle with the addend. Otherwise, we need to include the symbol | |
5421 | value so that it becomes an addend for the dynamic reloc. */ | |
5422 | if (!relocate) | |
5423 | return bfd_reloc_ok; | |
5424 | ||
5425 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5426 | contents, rel->r_offset, value, | |
5427 | signed_addend); | |
5428 | } | |
5429 | else | |
5430 | value += signed_addend; | |
5431 | break; | |
5432 | ||
a6bb11b2 | 5433 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 5434 | case BFD_RELOC_AARCH64_JUMP26: |
a06ea964 NC |
5435 | { |
5436 | asection *splt = globals->root.splt; | |
5437 | bfd_boolean via_plt_p = | |
5438 | splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1; | |
5439 | ||
5440 | /* A call to an undefined weak symbol is converted to a jump to | |
5441 | the next instruction unless a PLT entry will be created. | |
5442 | The jump to the next instruction is optimized as a NOP. | |
5443 | Do the same for local undefined symbols. */ | |
5444 | if (weak_undef_p && ! via_plt_p) | |
5445 | { | |
5446 | bfd_putl32 (INSN_NOP, hit_data); | |
5447 | return bfd_reloc_ok; | |
5448 | } | |
5449 | ||
5450 | /* If the call goes through a PLT entry, make sure to | |
5451 | check distance to the right destination address. */ | |
5452 | if (via_plt_p) | |
07f9ddfe JW |
5453 | value = (splt->output_section->vma |
5454 | + splt->output_offset + h->plt.offset); | |
5455 | ||
5456 | /* Check if a stub has to be inserted because the destination | |
5457 | is too far away. */ | |
5458 | struct elf_aarch64_stub_hash_entry *stub_entry = NULL; | |
2f340668 JW |
5459 | |
5460 | /* If the branch destination is directed to plt stub, "value" will be | |
5461 | the final destination, otherwise we should plus signed_addend, it may | |
5462 | contain non-zero value, for example call to local function symbol | |
5463 | which are turned into "sec_sym + sec_off", and sec_off is kept in | |
5464 | signed_addend. */ | |
5465 | if (! aarch64_valid_branch_p (via_plt_p ? value : value + signed_addend, | |
5466 | place)) | |
07f9ddfe JW |
5467 | /* The target is out of reach, so redirect the branch to |
5468 | the local stub for this function. */ | |
5469 | stub_entry = elfNN_aarch64_get_stub_entry (input_section, sym_sec, h, | |
5470 | rel, globals); | |
5471 | if (stub_entry != NULL) | |
2f340668 JW |
5472 | { |
5473 | value = (stub_entry->stub_offset | |
5474 | + stub_entry->stub_sec->output_offset | |
5475 | + stub_entry->stub_sec->output_section->vma); | |
5476 | ||
5477 | /* We have redirected the destination to stub entry address, | |
5478 | so ignore any addend record in the original rela entry. */ | |
5479 | signed_addend = 0; | |
5480 | } | |
a06ea964 | 5481 | } |
caed7120 YZ |
5482 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5483 | signed_addend, weak_undef_p); | |
07f9ddfe | 5484 | *unresolved_reloc_p = FALSE; |
a06ea964 NC |
5485 | break; |
5486 | ||
dcbd20eb JW |
5487 | case BFD_RELOC_AARCH64_16_PCREL: |
5488 | case BFD_RELOC_AARCH64_32_PCREL: | |
5489 | case BFD_RELOC_AARCH64_64_PCREL: | |
ce336788 JW |
5490 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
5491 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
5492 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
5493 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
1daf502a RL |
5494 | case BFD_RELOC_AARCH64_MOVW_PREL_G0: |
5495 | case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC: | |
5496 | case BFD_RELOC_AARCH64_MOVW_PREL_G1: | |
5497 | case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC: | |
5498 | case BFD_RELOC_AARCH64_MOVW_PREL_G2: | |
5499 | case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC: | |
5500 | case BFD_RELOC_AARCH64_MOVW_PREL_G3: | |
0e1862bb | 5501 | if (bfd_link_pic (info) |
dcbd20eb JW |
5502 | && (input_section->flags & SEC_ALLOC) != 0 |
5503 | && (input_section->flags & SEC_READONLY) != 0 | |
d68f1976 | 5504 | && !SYMBOL_REFERENCES_LOCAL (info, h)) |
dcbd20eb JW |
5505 | { |
5506 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
5507 | ||
4eca0228 | 5508 | _bfd_error_handler |
695344c0 | 5509 | /* xgettext:c-format */ |
871b3ab2 | 5510 | (_("%pB: relocation %s against symbol `%s' which may bind " |
d68f1976 JW |
5511 | "externally can not be used when making a shared object; " |
5512 | "recompile with -fPIC"), | |
dcbd20eb JW |
5513 | input_bfd, elfNN_aarch64_howto_table[howto_index].name, |
5514 | h->root.root.string); | |
5515 | bfd_set_error (bfd_error_bad_value); | |
1d75a8e2 | 5516 | return bfd_reloc_notsupported; |
dcbd20eb | 5517 | } |
1a0670f3 | 5518 | /* Fall through. */ |
dcbd20eb | 5519 | |
a6bb11b2 | 5520 | case BFD_RELOC_AARCH64_16: |
92d77487 RL |
5521 | #if ARCH_SIZE == 64 |
5522 | case BFD_RELOC_AARCH64_32: | |
5523 | #endif | |
a6bb11b2 | 5524 | case BFD_RELOC_AARCH64_ADD_LO12: |
a6bb11b2 | 5525 | case BFD_RELOC_AARCH64_BRANCH19: |
ce336788 | 5526 | case BFD_RELOC_AARCH64_LDST128_LO12: |
a6bb11b2 YZ |
5527 | case BFD_RELOC_AARCH64_LDST16_LO12: |
5528 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
5529 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
ce336788 | 5530 | case BFD_RELOC_AARCH64_LDST8_LO12: |
a6bb11b2 YZ |
5531 | case BFD_RELOC_AARCH64_MOVW_G0: |
5532 | case BFD_RELOC_AARCH64_MOVW_G0_NC: | |
ce336788 | 5533 | case BFD_RELOC_AARCH64_MOVW_G0_S: |
a6bb11b2 YZ |
5534 | case BFD_RELOC_AARCH64_MOVW_G1: |
5535 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
ce336788 | 5536 | case BFD_RELOC_AARCH64_MOVW_G1_S: |
a6bb11b2 YZ |
5537 | case BFD_RELOC_AARCH64_MOVW_G2: |
5538 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
ce336788 | 5539 | case BFD_RELOC_AARCH64_MOVW_G2_S: |
a6bb11b2 | 5540 | case BFD_RELOC_AARCH64_MOVW_G3: |
a6bb11b2 | 5541 | case BFD_RELOC_AARCH64_TSTBR14: |
caed7120 YZ |
5542 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5543 | signed_addend, weak_undef_p); | |
a06ea964 NC |
5544 | break; |
5545 | ||
a6bb11b2 YZ |
5546 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
5547 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 5548 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 5549 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 5550 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 5551 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
2aff25ba JW |
5552 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
5553 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: | |
5554 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: | |
a06ea964 NC |
5555 | if (globals->root.sgot == NULL) |
5556 | BFD_ASSERT (h != NULL); | |
5557 | ||
ff07562f | 5558 | relative_reloc = FALSE; |
a06ea964 NC |
5559 | if (h != NULL) |
5560 | { | |
99ad26cb | 5561 | bfd_vma addend = 0; |
ff07562f JW |
5562 | |
5563 | /* If a symbol is not dynamic and is not undefined weak, bind it | |
5564 | locally and generate a RELATIVE relocation under PIC mode. | |
5565 | ||
5566 | NOTE: one symbol may be referenced by several relocations, we | |
5567 | should only generate one RELATIVE relocation for that symbol. | |
5568 | Therefore, check GOT offset mark first. */ | |
5569 | if (h->dynindx == -1 | |
5570 | && !h->forced_local | |
5571 | && h->root.type != bfd_link_hash_undefweak | |
5572 | && bfd_link_pic (info) | |
5573 | && !symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
5574 | relative_reloc = TRUE; | |
5575 | ||
a06ea964 NC |
5576 | value = aarch64_calculate_got_entry_vma (h, globals, info, value, |
5577 | output_bfd, | |
5578 | unresolved_reloc_p); | |
ff07562f JW |
5579 | /* Record the GOT entry address which will be used when generating |
5580 | RELATIVE relocation. */ | |
5581 | if (relative_reloc) | |
5582 | got_entry_addr = value; | |
5583 | ||
2aff25ba | 5584 | if (aarch64_relocation_aginst_gp_p (bfd_r_type)) |
99ad26cb JW |
5585 | addend = (globals->root.sgot->output_section->vma |
5586 | + globals->root.sgot->output_offset); | |
caed7120 | 5587 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
99ad26cb | 5588 | addend, weak_undef_p); |
a06ea964 | 5589 | } |
b53b1bed JW |
5590 | else |
5591 | { | |
99ad26cb | 5592 | bfd_vma addend = 0; |
b53b1bed JW |
5593 | struct elf_aarch64_local_symbol *locals |
5594 | = elf_aarch64_locals (input_bfd); | |
5595 | ||
5596 | if (locals == NULL) | |
5597 | { | |
5598 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
4eca0228 | 5599 | _bfd_error_handler |
695344c0 | 5600 | /* xgettext:c-format */ |
90b6238f | 5601 | (_("%pB: local symbol descriptor table be NULL when applying " |
b53b1bed JW |
5602 | "relocation %s against local symbol"), |
5603 | input_bfd, elfNN_aarch64_howto_table[howto_index].name); | |
5604 | abort (); | |
5605 | } | |
5606 | ||
5607 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
5608 | base_got = globals->root.sgot; | |
ff07562f JW |
5609 | got_entry_addr = (base_got->output_section->vma |
5610 | + base_got->output_offset + off); | |
b53b1bed JW |
5611 | |
5612 | if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
5613 | { | |
5614 | bfd_put_64 (output_bfd, value, base_got->contents + off); | |
5615 | ||
ff07562f JW |
5616 | /* For local symbol, we have done absolute relocation in static |
5617 | linking stage. While for shared library, we need to update the | |
5618 | content of GOT entry according to the shared object's runtime | |
5619 | base address. So, we need to generate a R_AARCH64_RELATIVE reloc | |
5620 | for dynamic linker. */ | |
0e1862bb | 5621 | if (bfd_link_pic (info)) |
ff07562f | 5622 | relative_reloc = TRUE; |
b53b1bed JW |
5623 | |
5624 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
5625 | } | |
5626 | ||
5627 | /* Update the relocation value to GOT entry addr as we have transformed | |
5628 | the direct data access into indirect data access through GOT. */ | |
5629 | value = got_entry_addr; | |
99ad26cb | 5630 | |
2aff25ba | 5631 | if (aarch64_relocation_aginst_gp_p (bfd_r_type)) |
99ad26cb JW |
5632 | addend = base_got->output_section->vma + base_got->output_offset; |
5633 | ||
5634 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, | |
5635 | addend, weak_undef_p); | |
b53b1bed | 5636 | } |
ff07562f JW |
5637 | |
5638 | if (relative_reloc) | |
5639 | { | |
5640 | asection *s; | |
5641 | Elf_Internal_Rela outrel; | |
5642 | ||
5643 | s = globals->root.srelgot; | |
5644 | if (s == NULL) | |
5645 | abort (); | |
5646 | ||
5647 | outrel.r_offset = got_entry_addr; | |
5648 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); | |
5649 | outrel.r_addend = orig_value; | |
5650 | elf_append_rela (output_bfd, s, &outrel); | |
5651 | } | |
a2e1db00 RL |
5652 | break; |
5653 | ||
ce336788 | 5654 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 5655 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 5656 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 5657 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 5658 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 5659 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 5660 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
73f925cc | 5661 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 5662 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 5663 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
5664 | if (globals->root.sgot == NULL) |
5665 | return bfd_reloc_notsupported; | |
5666 | ||
5667 | value = (symbol_got_offset (input_bfd, h, r_symndx) | |
5668 | + globals->root.sgot->output_section->vma | |
f44a1f8e | 5669 | + globals->root.sgot->output_offset); |
a06ea964 | 5670 | |
caed7120 YZ |
5671 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5672 | 0, weak_undef_p); | |
a06ea964 NC |
5673 | *unresolved_reloc_p = FALSE; |
5674 | break; | |
5675 | ||
7ba7cfe4 | 5676 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 5677 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
3b957e5b RL |
5678 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
5679 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
94facae3 RL |
5680 | if (globals->root.sgot == NULL) |
5681 | return bfd_reloc_notsupported; | |
5682 | ||
5683 | value = symbol_got_offset (input_bfd, h, r_symndx); | |
5684 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, | |
5685 | 0, weak_undef_p); | |
5686 | *unresolved_reloc_p = FALSE; | |
5687 | break; | |
5688 | ||
6ffe9a1b | 5689 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12: |
40fbed84 | 5690 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12: |
753999c1 | 5691 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC: |
07c9aa07 JW |
5692 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12: |
5693 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC: | |
5694 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12: | |
5695 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC: | |
5696 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12: | |
5697 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC: | |
5698 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12: | |
5699 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC: | |
6ffe9a1b JW |
5700 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0: |
5701 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC: | |
5702 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1: | |
5703 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC: | |
5704 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2: | |
40fbed84 JW |
5705 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5706 | signed_addend - dtpoff_base (info), | |
5707 | weak_undef_p); | |
5708 | break; | |
5709 | ||
a6bb11b2 YZ |
5710 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
5711 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: | |
5712 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: | |
5713 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: | |
5714 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
5715 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: | |
5716 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
5717 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
caed7120 YZ |
5718 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5719 | signed_addend - tpoff_base (info), | |
5720 | weak_undef_p); | |
a06ea964 NC |
5721 | *unresolved_reloc_p = FALSE; |
5722 | break; | |
5723 | ||
f955cccf | 5724 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 5725 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 5726 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 5727 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
f955cccf | 5728 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
1ada945d | 5729 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
5730 | if (globals->root.sgot == NULL) |
5731 | return bfd_reloc_notsupported; | |
a06ea964 NC |
5732 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) |
5733 | + globals->root.sgotplt->output_section->vma | |
f44a1f8e | 5734 | + globals->root.sgotplt->output_offset |
a06ea964 NC |
5735 | + globals->sgotplt_jump_table_size); |
5736 | ||
caed7120 YZ |
5737 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5738 | 0, weak_undef_p); | |
a06ea964 NC |
5739 | *unresolved_reloc_p = FALSE; |
5740 | break; | |
5741 | ||
0484b454 RL |
5742 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
5743 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
5744 | if (globals->root.sgot == NULL) | |
5745 | return bfd_reloc_notsupported; | |
5746 | ||
5747 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) | |
5748 | + globals->root.sgotplt->output_section->vma | |
5749 | + globals->root.sgotplt->output_offset | |
5750 | + globals->sgotplt_jump_table_size); | |
5751 | ||
5752 | value -= (globals->root.sgot->output_section->vma | |
5753 | + globals->root.sgot->output_offset); | |
5754 | ||
5755 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, | |
5756 | 0, weak_undef_p); | |
5757 | *unresolved_reloc_p = FALSE; | |
5758 | break; | |
5759 | ||
a06ea964 NC |
5760 | default: |
5761 | return bfd_reloc_notsupported; | |
5762 | } | |
5763 | ||
5764 | if (saved_addend) | |
5765 | *saved_addend = value; | |
5766 | ||
5767 | /* Only apply the final relocation in a sequence. */ | |
5768 | if (save_addend) | |
5769 | return bfd_reloc_continue; | |
5770 | ||
caed7120 YZ |
5771 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, |
5772 | howto, value); | |
a06ea964 NC |
5773 | } |
5774 | ||
2d0ca824 YN |
5775 | /* LP64 and ILP32 operates on x- and w-registers respectively. |
5776 | Next definitions take into account the difference between | |
5777 | corresponding machine codes. R means x-register if the target | |
5778 | arch is LP64, and w-register if the target is ILP32. */ | |
5779 | ||
5780 | #if ARCH_SIZE == 64 | |
5781 | # define add_R0_R0 (0x91000000) | |
5782 | # define add_R0_R0_R1 (0x8b000020) | |
5783 | # define add_R0_R1 (0x91400020) | |
5784 | # define ldr_R0 (0x58000000) | |
5785 | # define ldr_R0_mask(i) (i & 0xffffffe0) | |
5786 | # define ldr_R0_x0 (0xf9400000) | |
5787 | # define ldr_hw_R0 (0xf2a00000) | |
5788 | # define movk_R0 (0xf2800000) | |
5789 | # define movz_R0 (0xd2a00000) | |
5790 | # define movz_hw_R0 (0xd2c00000) | |
5791 | #else /*ARCH_SIZE == 32 */ | |
5792 | # define add_R0_R0 (0x11000000) | |
5793 | # define add_R0_R0_R1 (0x0b000020) | |
5794 | # define add_R0_R1 (0x11400020) | |
5795 | # define ldr_R0 (0x18000000) | |
5796 | # define ldr_R0_mask(i) (i & 0xbfffffe0) | |
5797 | # define ldr_R0_x0 (0xb9400000) | |
5798 | # define ldr_hw_R0 (0x72a00000) | |
5799 | # define movk_R0 (0x72800000) | |
5800 | # define movz_R0 (0x52a00000) | |
5801 | # define movz_hw_R0 (0x52c00000) | |
5802 | #endif | |
5803 | ||
a06ea964 NC |
5804 | /* Handle TLS relaxations. Relaxing is possible for symbols that use |
5805 | R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static | |
5806 | link. | |
5807 | ||
5808 | Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller | |
5809 | is to then call final_link_relocate. Return other values in the | |
5810 | case of error. */ | |
5811 | ||
5812 | static bfd_reloc_status_type | |
cec5225b | 5813 | elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals, |
a06ea964 | 5814 | bfd *input_bfd, bfd_byte *contents, |
06d2788c | 5815 | Elf_Internal_Rela *rel, struct elf_link_hash_entry *h) |
a06ea964 NC |
5816 | { |
5817 | bfd_boolean is_local = h == NULL; | |
cec5225b | 5818 | unsigned int r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
5819 | unsigned long insn; |
5820 | ||
5821 | BFD_ASSERT (globals && input_bfd && contents && rel); | |
5822 | ||
0aa13fee | 5823 | switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type)) |
a06ea964 | 5824 | { |
a6bb11b2 | 5825 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 5826 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a06ea964 NC |
5827 | if (is_local) |
5828 | { | |
5829 | /* GD->LE relaxation: | |
2d0ca824 | 5830 | adrp x0, :tlsgd:var => movz R0, :tprel_g1:var |
a06ea964 | 5831 | or |
2d0ca824 YN |
5832 | adrp x0, :tlsdesc:var => movz R0, :tprel_g1:var |
5833 | ||
5834 | Where R is x for LP64, and w for ILP32. */ | |
5835 | bfd_putl32 (movz_R0, contents + rel->r_offset); | |
a06ea964 NC |
5836 | return bfd_reloc_continue; |
5837 | } | |
5838 | else | |
5839 | { | |
5840 | /* GD->IE relaxation: | |
5841 | adrp x0, :tlsgd:var => adrp x0, :gottprel:var | |
5842 | or | |
5843 | adrp x0, :tlsdesc:var => adrp x0, :gottprel:var | |
5844 | */ | |
a06ea964 NC |
5845 | return bfd_reloc_continue; |
5846 | } | |
5847 | ||
389b8029 MS |
5848 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
5849 | BFD_ASSERT (0); | |
5850 | break; | |
5851 | ||
1ada945d MS |
5852 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
5853 | if (is_local) | |
5854 | { | |
5855 | /* Tiny TLSDESC->LE relaxation: | |
07d6d2b8 AM |
5856 | ldr x1, :tlsdesc:var => movz R0, #:tprel_g1:var |
5857 | adr x0, :tlsdesc:var => movk R0, #:tprel_g0_nc:var | |
1ada945d | 5858 | .tlsdesccall var |
07d6d2b8 | 5859 | blr x1 => nop |
2d0ca824 YN |
5860 | |
5861 | Where R is x for LP64, and w for ILP32. */ | |
1ada945d MS |
5862 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); |
5863 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
5864 | ||
5865 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5866 | AARCH64_R (TLSLE_MOVW_TPREL_G0_NC)); | |
5867 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5868 | ||
2d0ca824 YN |
5869 | bfd_putl32 (movz_R0, contents + rel->r_offset); |
5870 | bfd_putl32 (movk_R0, contents + rel->r_offset + 4); | |
1ada945d MS |
5871 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); |
5872 | return bfd_reloc_continue; | |
5873 | } | |
5874 | else | |
5875 | { | |
5876 | /* Tiny TLSDESC->IE relaxation: | |
07d6d2b8 AM |
5877 | ldr x1, :tlsdesc:var => ldr x0, :gottprel:var |
5878 | adr x0, :tlsdesc:var => nop | |
1ada945d | 5879 | .tlsdesccall var |
07d6d2b8 | 5880 | blr x1 => nop |
1ada945d MS |
5881 | */ |
5882 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); | |
5883 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
5884 | ||
5885 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5886 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5887 | ||
2d0ca824 | 5888 | bfd_putl32 (ldr_R0, contents + rel->r_offset); |
1ada945d MS |
5889 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4); |
5890 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); | |
5891 | return bfd_reloc_continue; | |
5892 | } | |
5893 | ||
3c12b054 MS |
5894 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
5895 | if (is_local) | |
5896 | { | |
5897 | /* Tiny GD->LE relaxation: | |
07d6d2b8 AM |
5898 | adr x0, :tlsgd:var => mrs x1, tpidr_el0 |
5899 | bl __tls_get_addr => add R0, R1, #:tprel_hi12:x, lsl #12 | |
5900 | nop => add R0, R0, #:tprel_lo12_nc:x | |
2d0ca824 YN |
5901 | |
5902 | Where R is x for LP64, and x for Ilp32. */ | |
3c12b054 MS |
5903 | |
5904 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
5905 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
5906 | ||
5907 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0); | |
2d0ca824 YN |
5908 | bfd_putl32 (add_R0_R1, contents + rel->r_offset + 4); |
5909 | bfd_putl32 (add_R0_R0, contents + rel->r_offset + 8); | |
3c12b054 MS |
5910 | |
5911 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5912 | AARCH64_R (TLSLE_ADD_TPREL_LO12_NC)); | |
5913 | rel[1].r_offset = rel->r_offset + 8; | |
5914 | ||
5915 | /* Move the current relocation to the second instruction in | |
5916 | the sequence. */ | |
5917 | rel->r_offset += 4; | |
5918 | rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5919 | AARCH64_R (TLSLE_ADD_TPREL_HI12)); | |
5920 | return bfd_reloc_continue; | |
5921 | } | |
5922 | else | |
5923 | { | |
5924 | /* Tiny GD->IE relaxation: | |
07d6d2b8 AM |
5925 | adr x0, :tlsgd:var => ldr R0, :gottprel:var |
5926 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
5927 | nop => add R0, R0, R1 | |
2d0ca824 YN |
5928 | |
5929 | Where R is x for LP64, and w for Ilp32. */ | |
3c12b054 MS |
5930 | |
5931 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
5932 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
5933 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5934 | ||
2d0ca824 | 5935 | bfd_putl32 (ldr_R0, contents + rel->r_offset); |
3c12b054 | 5936 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); |
2d0ca824 | 5937 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8); |
3c12b054 MS |
5938 | return bfd_reloc_continue; |
5939 | } | |
5940 | ||
ac734732 RL |
5941 | #if ARCH_SIZE == 64 |
5942 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: | |
5943 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSGD_MOVW_G0_NC)); | |
5944 | BFD_ASSERT (rel->r_offset + 12 == rel[2].r_offset); | |
5945 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (CALL26)); | |
5946 | ||
5947 | if (is_local) | |
5948 | { | |
5949 | /* Large GD->LE relaxation: | |
07d6d2b8 | 5950 | movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32 |
ac734732 | 5951 | movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16 |
07d6d2b8 AM |
5952 | add x0, gp, x0 => movk x0, #:tprel_g0_nc:var |
5953 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
5954 | nop => add x0, x0, x1 | |
ac734732 RL |
5955 | */ |
5956 | rel[2].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5957 | AARCH64_R (TLSLE_MOVW_TPREL_G0_NC)); | |
5958 | rel[2].r_offset = rel->r_offset + 8; | |
5959 | ||
2d0ca824 YN |
5960 | bfd_putl32 (movz_hw_R0, contents + rel->r_offset + 0); |
5961 | bfd_putl32 (ldr_hw_R0, contents + rel->r_offset + 4); | |
5962 | bfd_putl32 (movk_R0, contents + rel->r_offset + 8); | |
ac734732 | 5963 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12); |
2d0ca824 | 5964 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16); |
ac734732 RL |
5965 | } |
5966 | else | |
5967 | { | |
5968 | /* Large GD->IE relaxation: | |
07d6d2b8 | 5969 | movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16 |
ac734732 | 5970 | movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var |
07d6d2b8 AM |
5971 | add x0, gp, x0 => ldr x0, [gp, x0] |
5972 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
5973 | nop => add x0, x0, x1 | |
ac734732 RL |
5974 | */ |
5975 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5976 | bfd_putl32 (0xd2a80000, contents + rel->r_offset + 0); | |
2d0ca824 | 5977 | bfd_putl32 (ldr_R0, contents + rel->r_offset + 8); |
ac734732 | 5978 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12); |
2d0ca824 | 5979 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16); |
ac734732 RL |
5980 | } |
5981 | return bfd_reloc_continue; | |
5982 | ||
5983 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: | |
5984 | return bfd_reloc_continue; | |
5985 | #endif | |
5986 | ||
043bf05a MS |
5987 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
5988 | return bfd_reloc_continue; | |
5989 | ||
a6bb11b2 | 5990 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
a06ea964 NC |
5991 | if (is_local) |
5992 | { | |
5993 | /* GD->LE relaxation: | |
5994 | ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var | |
2d0ca824 YN |
5995 | |
5996 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
5997 | bfd_putl32 (movk_R0, contents + rel->r_offset); | |
a06ea964 NC |
5998 | return bfd_reloc_continue; |
5999 | } | |
6000 | else | |
6001 | { | |
6002 | /* GD->IE relaxation: | |
2d0ca824 YN |
6003 | ldr xd, [x0, #:tlsdesc_lo12:var] => ldr R0, [x0, #:gottprel_lo12:var] |
6004 | ||
6005 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 | 6006 | insn = bfd_getl32 (contents + rel->r_offset); |
2d0ca824 | 6007 | bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset); |
a06ea964 NC |
6008 | return bfd_reloc_continue; |
6009 | } | |
6010 | ||
a6bb11b2 | 6011 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a06ea964 NC |
6012 | if (is_local) |
6013 | { | |
6014 | /* GD->LE relaxation | |
07d6d2b8 AM |
6015 | add x0, #:tlsgd_lo12:var => movk R0, :tprel_g0_nc:var |
6016 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
6017 | nop => add R0, R1, R0 | |
2d0ca824 YN |
6018 | |
6019 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 NC |
6020 | |
6021 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
6022 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
cec5225b | 6023 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 | 6024 | |
2d0ca824 | 6025 | bfd_putl32 (movk_R0, contents + rel->r_offset); |
a06ea964 | 6026 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); |
2d0ca824 | 6027 | bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8); |
a06ea964 NC |
6028 | return bfd_reloc_continue; |
6029 | } | |
6030 | else | |
6031 | { | |
6032 | /* GD->IE relaxation | |
07d6d2b8 AM |
6033 | ADD x0, #:tlsgd_lo12:var => ldr R0, [x0, #:gottprel_lo12:var] |
6034 | BL __tls_get_addr => mrs x1, tpidr_el0 | |
a06ea964 | 6035 | R_AARCH64_CALL26 |
07d6d2b8 | 6036 | NOP => add R0, R1, R0 |
5cd1d8bc YN |
6037 | |
6038 | Where R is x for lp64 mode, and w for ilp32 mode. */ | |
a06ea964 | 6039 | |
a6bb11b2 | 6040 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); |
a06ea964 NC |
6041 | |
6042 | /* Remove the relocation on the BL instruction. */ | |
cec5225b | 6043 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 | 6044 | |
a06ea964 NC |
6045 | /* We choose to fixup the BL and NOP instructions using the |
6046 | offset from the second relocation to allow flexibility in | |
6047 | scheduling instructions between the ADD and BL. */ | |
2d0ca824 | 6048 | bfd_putl32 (ldr_R0_x0, contents + rel->r_offset); |
5cd1d8bc | 6049 | bfd_putl32 (0xd53bd041, contents + rel[1].r_offset); |
2d0ca824 | 6050 | bfd_putl32 (add_R0_R0_R1, contents + rel[1].r_offset + 4); |
a06ea964 NC |
6051 | return bfd_reloc_continue; |
6052 | } | |
6053 | ||
0484b454 | 6054 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
f955cccf | 6055 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 6056 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a06ea964 | 6057 | /* GD->IE/LE relaxation: |
07d6d2b8 AM |
6058 | add x0, x0, #:tlsdesc_lo12:var => nop |
6059 | blr xd => nop | |
a06ea964 NC |
6060 | */ |
6061 | bfd_putl32 (INSN_NOP, contents + rel->r_offset); | |
6062 | return bfd_reloc_ok; | |
6063 | ||
0484b454 RL |
6064 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
6065 | if (is_local) | |
6066 | { | |
6067 | /* GD->LE relaxation: | |
2d0ca824 YN |
6068 | ldr xd, [gp, xn] => movk R0, #:tprel_g0_nc:var |
6069 | ||
6070 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
6071 | bfd_putl32 (movk_R0, contents + rel->r_offset); | |
0484b454 RL |
6072 | return bfd_reloc_continue; |
6073 | } | |
6074 | else | |
6075 | { | |
6076 | /* GD->IE relaxation: | |
2d0ca824 YN |
6077 | ldr xd, [gp, xn] => ldr R0, [gp, xn] |
6078 | ||
6079 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
0484b454 | 6080 | insn = bfd_getl32 (contents + rel->r_offset); |
2d0ca824 | 6081 | bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset); |
0484b454 RL |
6082 | return bfd_reloc_ok; |
6083 | } | |
6084 | ||
6085 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: | |
6086 | /* GD->LE relaxation: | |
2d0ca824 | 6087 | movk xd, #:tlsdesc_off_g0_nc:var => movk R0, #:tprel_g1_nc:var, lsl #16 |
0484b454 | 6088 | GD->IE relaxation: |
2d0ca824 YN |
6089 | movk xd, #:tlsdesc_off_g0_nc:var => movk Rd, #:gottprel_g0_nc:var |
6090 | ||
6091 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
0484b454 | 6092 | if (is_local) |
2d0ca824 | 6093 | bfd_putl32 (ldr_hw_R0, contents + rel->r_offset); |
0484b454 RL |
6094 | return bfd_reloc_continue; |
6095 | ||
6096 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
6097 | if (is_local) | |
6098 | { | |
6099 | /* GD->LE relaxation: | |
2d0ca824 YN |
6100 | movz xd, #:tlsdesc_off_g1:var => movz R0, #:tprel_g2:var, lsl #32 |
6101 | ||
6102 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
6103 | bfd_putl32 (movz_hw_R0, contents + rel->r_offset); | |
0484b454 RL |
6104 | return bfd_reloc_continue; |
6105 | } | |
6106 | else | |
6107 | { | |
6108 | /* GD->IE relaxation: | |
2d0ca824 YN |
6109 | movz xd, #:tlsdesc_off_g1:var => movz Rd, #:gottprel_g1:var, lsl #16 |
6110 | ||
6111 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
0484b454 | 6112 | insn = bfd_getl32 (contents + rel->r_offset); |
2d0ca824 | 6113 | bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset); |
0484b454 RL |
6114 | return bfd_reloc_continue; |
6115 | } | |
6116 | ||
a6bb11b2 | 6117 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a06ea964 | 6118 | /* IE->LE relaxation: |
07d6d2b8 | 6119 | adrp xd, :gottprel:var => movz Rd, :tprel_g1:var |
2d0ca824 YN |
6120 | |
6121 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 NC |
6122 | if (is_local) |
6123 | { | |
6124 | insn = bfd_getl32 (contents + rel->r_offset); | |
2d0ca824 | 6125 | bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset); |
a06ea964 NC |
6126 | } |
6127 | return bfd_reloc_continue; | |
6128 | ||
a6bb11b2 | 6129 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: |
a06ea964 | 6130 | /* IE->LE relaxation: |
07d6d2b8 | 6131 | ldr xd, [xm, #:gottprel_lo12:var] => movk Rd, :tprel_g0_nc:var |
2d0ca824 YN |
6132 | |
6133 | Where R is x for lp64 mode, and w for ILP32 mode. */ | |
a06ea964 NC |
6134 | if (is_local) |
6135 | { | |
6136 | insn = bfd_getl32 (contents + rel->r_offset); | |
2d0ca824 | 6137 | bfd_putl32 (movk_R0 | (insn & 0x1f), contents + rel->r_offset); |
a06ea964 NC |
6138 | } |
6139 | return bfd_reloc_continue; | |
6140 | ||
259364ad JW |
6141 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
6142 | /* LD->LE relaxation (tiny): | |
6143 | adr x0, :tlsldm:x => mrs x0, tpidr_el0 | |
c1fc2d7e YN |
6144 | bl __tls_get_addr => add R0, R0, TCB_SIZE |
6145 | ||
6146 | Where R is x for lp64 mode, and w for ilp32 mode. */ | |
259364ad JW |
6147 | if (is_local) |
6148 | { | |
6149 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6150 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); | |
6151 | /* No need of CALL26 relocation for tls_get_addr. */ | |
6152 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
6153 | bfd_putl32 (0xd53bd040, contents + rel->r_offset + 0); | |
2d0ca824 YN |
6154 | bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10), |
6155 | contents + rel->r_offset + 4); | |
259364ad JW |
6156 | return bfd_reloc_ok; |
6157 | } | |
6158 | return bfd_reloc_continue; | |
6159 | ||
6160 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: | |
6161 | /* LD->LE relaxation (small): | |
6162 | adrp x0, :tlsldm:x => mrs x0, tpidr_el0 | |
6163 | */ | |
6164 | if (is_local) | |
6165 | { | |
6166 | bfd_putl32 (0xd53bd040, contents + rel->r_offset); | |
6167 | return bfd_reloc_ok; | |
6168 | } | |
6169 | return bfd_reloc_continue; | |
6170 | ||
6171 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: | |
6172 | /* LD->LE relaxation (small): | |
c1fc2d7e | 6173 | add x0, #:tlsldm_lo12:x => add R0, R0, TCB_SIZE |
259364ad | 6174 | bl __tls_get_addr => nop |
c1fc2d7e YN |
6175 | |
6176 | Where R is x for lp64 mode, and w for ilp32 mode. */ | |
259364ad JW |
6177 | if (is_local) |
6178 | { | |
6179 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
6180 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); | |
6181 | /* No need of CALL26 relocation for tls_get_addr. */ | |
6182 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
2d0ca824 YN |
6183 | bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10), |
6184 | contents + rel->r_offset + 0); | |
c1fc2d7e | 6185 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4); |
259364ad JW |
6186 | return bfd_reloc_ok; |
6187 | } | |
6188 | return bfd_reloc_continue; | |
6189 | ||
a06ea964 NC |
6190 | default: |
6191 | return bfd_reloc_continue; | |
6192 | } | |
6193 | ||
6194 | return bfd_reloc_ok; | |
6195 | } | |
6196 | ||
6197 | /* Relocate an AArch64 ELF section. */ | |
6198 | ||
6199 | static bfd_boolean | |
cec5225b | 6200 | elfNN_aarch64_relocate_section (bfd *output_bfd, |
a06ea964 NC |
6201 | struct bfd_link_info *info, |
6202 | bfd *input_bfd, | |
6203 | asection *input_section, | |
6204 | bfd_byte *contents, | |
6205 | Elf_Internal_Rela *relocs, | |
6206 | Elf_Internal_Sym *local_syms, | |
6207 | asection **local_sections) | |
6208 | { | |
6209 | Elf_Internal_Shdr *symtab_hdr; | |
6210 | struct elf_link_hash_entry **sym_hashes; | |
6211 | Elf_Internal_Rela *rel; | |
6212 | Elf_Internal_Rela *relend; | |
6213 | const char *name; | |
cec5225b | 6214 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 NC |
6215 | bfd_boolean save_addend = FALSE; |
6216 | bfd_vma addend = 0; | |
6217 | ||
cec5225b | 6218 | globals = elf_aarch64_hash_table (info); |
a06ea964 NC |
6219 | |
6220 | symtab_hdr = &elf_symtab_hdr (input_bfd); | |
6221 | sym_hashes = elf_sym_hashes (input_bfd); | |
6222 | ||
6223 | rel = relocs; | |
6224 | relend = relocs + input_section->reloc_count; | |
6225 | for (; rel < relend; rel++) | |
6226 | { | |
6227 | unsigned int r_type; | |
a6bb11b2 YZ |
6228 | bfd_reloc_code_real_type bfd_r_type; |
6229 | bfd_reloc_code_real_type relaxed_bfd_r_type; | |
a06ea964 NC |
6230 | reloc_howto_type *howto; |
6231 | unsigned long r_symndx; | |
6232 | Elf_Internal_Sym *sym; | |
6233 | asection *sec; | |
6234 | struct elf_link_hash_entry *h; | |
6235 | bfd_vma relocation; | |
6236 | bfd_reloc_status_type r; | |
6237 | arelent bfd_reloc; | |
6238 | char sym_type; | |
6239 | bfd_boolean unresolved_reloc = FALSE; | |
6240 | char *error_message = NULL; | |
6241 | ||
cec5225b YZ |
6242 | r_symndx = ELFNN_R_SYM (rel->r_info); |
6243 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 | 6244 | |
0aa13fee AM |
6245 | bfd_reloc.howto = elfNN_aarch64_howto_from_type (input_bfd, r_type); |
6246 | howto = bfd_reloc.howto; | |
a06ea964 | 6247 | |
7fcfd62d | 6248 | if (howto == NULL) |
47aeb64c NC |
6249 | return _bfd_unrecognized_reloc (input_bfd, input_section, r_type); |
6250 | ||
a6bb11b2 | 6251 | bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto); |
7fcfd62d | 6252 | |
a06ea964 NC |
6253 | h = NULL; |
6254 | sym = NULL; | |
6255 | sec = NULL; | |
6256 | ||
6257 | if (r_symndx < symtab_hdr->sh_info) | |
6258 | { | |
6259 | sym = local_syms + r_symndx; | |
cec5225b | 6260 | sym_type = ELFNN_ST_TYPE (sym->st_info); |
a06ea964 NC |
6261 | sec = local_sections[r_symndx]; |
6262 | ||
6263 | /* An object file might have a reference to a local | |
6264 | undefined symbol. This is a daft object file, but we | |
6265 | should at least do something about it. */ | |
6266 | if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL | |
6267 | && bfd_is_und_section (sec) | |
6268 | && ELF_ST_BIND (sym->st_info) != STB_WEAK) | |
1a72702b AM |
6269 | (*info->callbacks->undefined_symbol) |
6270 | (info, bfd_elf_string_from_elf_section | |
6271 | (input_bfd, symtab_hdr->sh_link, sym->st_name), | |
6272 | input_bfd, input_section, rel->r_offset, TRUE); | |
a06ea964 | 6273 | |
a06ea964 | 6274 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
1419bbe5 WN |
6275 | |
6276 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
0e1862bb | 6277 | if (!bfd_link_relocatable (info) |
1419bbe5 WN |
6278 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
6279 | { | |
6280 | h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd, | |
6281 | rel, FALSE); | |
6282 | if (h == NULL) | |
6283 | abort (); | |
6284 | ||
6285 | /* Set STT_GNU_IFUNC symbol value. */ | |
6286 | h->root.u.def.value = sym->st_value; | |
6287 | h->root.u.def.section = sec; | |
6288 | } | |
a06ea964 NC |
6289 | } |
6290 | else | |
6291 | { | |
62d887d4 | 6292 | bfd_boolean warned, ignored; |
a06ea964 NC |
6293 | |
6294 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
6295 | r_symndx, symtab_hdr, sym_hashes, | |
6296 | h, sec, relocation, | |
62d887d4 | 6297 | unresolved_reloc, warned, ignored); |
a06ea964 NC |
6298 | |
6299 | sym_type = h->type; | |
6300 | } | |
6301 | ||
6302 | if (sec != NULL && discarded_section (sec)) | |
6303 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
6304 | rel, 1, relend, howto, 0, contents); | |
6305 | ||
0e1862bb | 6306 | if (bfd_link_relocatable (info)) |
2e0488d3 | 6307 | continue; |
a06ea964 NC |
6308 | |
6309 | if (h != NULL) | |
6310 | name = h->root.root.string; | |
6311 | else | |
6312 | { | |
6313 | name = (bfd_elf_string_from_elf_section | |
6314 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
6315 | if (name == NULL || *name == '\0') | |
6316 | name = bfd_section_name (input_bfd, sec); | |
6317 | } | |
6318 | ||
6319 | if (r_symndx != 0 | |
6320 | && r_type != R_AARCH64_NONE | |
6321 | && r_type != R_AARCH64_NULL | |
6322 | && (h == NULL | |
6323 | || h->root.type == bfd_link_hash_defined | |
6324 | || h->root.type == bfd_link_hash_defweak) | |
a6bb11b2 | 6325 | && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS)) |
a06ea964 | 6326 | { |
4eca0228 | 6327 | _bfd_error_handler |
a06ea964 | 6328 | ((sym_type == STT_TLS |
695344c0 | 6329 | /* xgettext:c-format */ |
2dcf00ce | 6330 | ? _("%pB(%pA+%#" PRIx64 "): %s used with TLS symbol %s") |
695344c0 | 6331 | /* xgettext:c-format */ |
2dcf00ce | 6332 | : _("%pB(%pA+%#" PRIx64 "): %s used with non-TLS symbol %s")), |
a06ea964 | 6333 | input_bfd, |
2dcf00ce | 6334 | input_section, (uint64_t) rel->r_offset, howto->name, name); |
a06ea964 NC |
6335 | } |
6336 | ||
a06ea964 | 6337 | /* We relax only if we can see that there can be a valid transition |
07d6d2b8 AM |
6338 | from a reloc type to another. |
6339 | We call elfNN_aarch64_final_link_relocate unless we're completely | |
6340 | done, i.e., the relaxation produced the final output we want. */ | |
a06ea964 | 6341 | |
a6bb11b2 YZ |
6342 | relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, |
6343 | h, r_symndx); | |
6344 | if (relaxed_bfd_r_type != bfd_r_type) | |
a06ea964 | 6345 | { |
a6bb11b2 YZ |
6346 | bfd_r_type = relaxed_bfd_r_type; |
6347 | howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type); | |
6348 | BFD_ASSERT (howto != NULL); | |
6349 | r_type = howto->type; | |
06d2788c | 6350 | r = elfNN_aarch64_tls_relax (globals, input_bfd, contents, rel, h); |
a06ea964 NC |
6351 | unresolved_reloc = 0; |
6352 | } | |
6353 | else | |
6354 | r = bfd_reloc_continue; | |
6355 | ||
6356 | /* There may be multiple consecutive relocations for the | |
07d6d2b8 AM |
6357 | same offset. In that case we are supposed to treat the |
6358 | output of each relocation as the addend for the next. */ | |
a06ea964 NC |
6359 | if (rel + 1 < relend |
6360 | && rel->r_offset == rel[1].r_offset | |
cec5225b YZ |
6361 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE |
6362 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL) | |
a06ea964 NC |
6363 | save_addend = TRUE; |
6364 | else | |
6365 | save_addend = FALSE; | |
6366 | ||
6367 | if (r == bfd_reloc_continue) | |
cec5225b | 6368 | r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd, |
a06ea964 NC |
6369 | input_section, contents, rel, |
6370 | relocation, info, sec, | |
6371 | h, &unresolved_reloc, | |
1419bbe5 | 6372 | save_addend, &addend, sym); |
a06ea964 | 6373 | |
0aa13fee | 6374 | switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type)) |
a06ea964 | 6375 | { |
ce336788 | 6376 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 6377 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 6378 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 6379 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 6380 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
73f925cc | 6381 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 6382 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 6383 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
6384 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
6385 | { | |
6386 | bfd_boolean need_relocs = FALSE; | |
6387 | bfd_byte *loc; | |
6388 | int indx; | |
6389 | bfd_vma off; | |
6390 | ||
6391 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
6392 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
6393 | ||
6394 | need_relocs = | |
6dda7875 | 6395 | (!bfd_link_executable (info) || indx != 0) && |
a06ea964 NC |
6396 | (h == NULL |
6397 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6398 | || h->root.type != bfd_link_hash_undefweak); | |
6399 | ||
6400 | BFD_ASSERT (globals->root.srelgot != NULL); | |
6401 | ||
6402 | if (need_relocs) | |
6403 | { | |
6404 | Elf_Internal_Rela rela; | |
a6bb11b2 | 6405 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD)); |
a06ea964 NC |
6406 | rela.r_addend = 0; |
6407 | rela.r_offset = globals->root.sgot->output_section->vma + | |
6408 | globals->root.sgot->output_offset + off; | |
6409 | ||
6410 | ||
6411 | loc = globals->root.srelgot->contents; | |
6412 | loc += globals->root.srelgot->reloc_count++ | |
6413 | * RELOC_SIZE (htab); | |
cec5225b | 6414 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 6415 | |
f69e4920 | 6416 | bfd_reloc_code_real_type real_type = |
0aa13fee | 6417 | elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
f69e4920 JW |
6418 | |
6419 | if (real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 | |
73f925cc JW |
6420 | || real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 |
6421 | || real_type == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC) | |
77a69ff8 JW |
6422 | { |
6423 | /* For local dynamic, don't generate DTPREL in any case. | |
6424 | Initialize the DTPREL slot into zero, so we get module | |
6425 | base address when invoke runtime TLS resolver. */ | |
6426 | bfd_put_NN (output_bfd, 0, | |
6427 | globals->root.sgot->contents + off | |
6428 | + GOT_ENTRY_SIZE); | |
6429 | } | |
6430 | else if (indx == 0) | |
a06ea964 | 6431 | { |
cec5225b | 6432 | bfd_put_NN (output_bfd, |
a06ea964 NC |
6433 | relocation - dtpoff_base (info), |
6434 | globals->root.sgot->contents + off | |
6435 | + GOT_ENTRY_SIZE); | |
6436 | } | |
6437 | else | |
6438 | { | |
6439 | /* This TLS symbol is global. We emit a | |
6440 | relocation to fixup the tls offset at load | |
6441 | time. */ | |
6442 | rela.r_info = | |
a6bb11b2 | 6443 | ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL)); |
a06ea964 NC |
6444 | rela.r_addend = 0; |
6445 | rela.r_offset = | |
6446 | (globals->root.sgot->output_section->vma | |
6447 | + globals->root.sgot->output_offset + off | |
6448 | + GOT_ENTRY_SIZE); | |
6449 | ||
6450 | loc = globals->root.srelgot->contents; | |
6451 | loc += globals->root.srelgot->reloc_count++ | |
6452 | * RELOC_SIZE (globals); | |
cec5225b YZ |
6453 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
6454 | bfd_put_NN (output_bfd, (bfd_vma) 0, | |
a06ea964 NC |
6455 | globals->root.sgot->contents + off |
6456 | + GOT_ENTRY_SIZE); | |
6457 | } | |
6458 | } | |
6459 | else | |
6460 | { | |
cec5225b | 6461 | bfd_put_NN (output_bfd, (bfd_vma) 1, |
a06ea964 | 6462 | globals->root.sgot->contents + off); |
cec5225b | 6463 | bfd_put_NN (output_bfd, |
a06ea964 NC |
6464 | relocation - dtpoff_base (info), |
6465 | globals->root.sgot->contents + off | |
6466 | + GOT_ENTRY_SIZE); | |
6467 | } | |
6468 | ||
6469 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
6470 | } | |
6471 | break; | |
6472 | ||
a6bb11b2 YZ |
6473 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
6474 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
043bf05a | 6475 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
6476 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
6477 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
a06ea964 NC |
6478 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
6479 | { | |
6480 | bfd_boolean need_relocs = FALSE; | |
6481 | bfd_byte *loc; | |
6482 | int indx; | |
6483 | bfd_vma off; | |
6484 | ||
6485 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
6486 | ||
6487 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
6488 | ||
6489 | need_relocs = | |
6dda7875 | 6490 | (!bfd_link_executable (info) || indx != 0) && |
a06ea964 NC |
6491 | (h == NULL |
6492 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6493 | || h->root.type != bfd_link_hash_undefweak); | |
6494 | ||
6495 | BFD_ASSERT (globals->root.srelgot != NULL); | |
6496 | ||
6497 | if (need_relocs) | |
6498 | { | |
6499 | Elf_Internal_Rela rela; | |
6500 | ||
6501 | if (indx == 0) | |
6502 | rela.r_addend = relocation - dtpoff_base (info); | |
6503 | else | |
6504 | rela.r_addend = 0; | |
6505 | ||
a6bb11b2 | 6506 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL)); |
a06ea964 NC |
6507 | rela.r_offset = globals->root.sgot->output_section->vma + |
6508 | globals->root.sgot->output_offset + off; | |
6509 | ||
6510 | loc = globals->root.srelgot->contents; | |
6511 | loc += globals->root.srelgot->reloc_count++ | |
6512 | * RELOC_SIZE (htab); | |
6513 | ||
cec5225b | 6514 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 6515 | |
cec5225b | 6516 | bfd_put_NN (output_bfd, rela.r_addend, |
a06ea964 NC |
6517 | globals->root.sgot->contents + off); |
6518 | } | |
6519 | else | |
cec5225b | 6520 | bfd_put_NN (output_bfd, relocation - tpoff_base (info), |
a06ea964 NC |
6521 | globals->root.sgot->contents + off); |
6522 | ||
6523 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
6524 | } | |
6525 | break; | |
6526 | ||
f955cccf | 6527 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
a6bb11b2 | 6528 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 6529 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 6530 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
1ada945d | 6531 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
6532 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
6533 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a06ea964 NC |
6534 | if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx)) |
6535 | { | |
6536 | bfd_boolean need_relocs = FALSE; | |
6537 | int indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
6538 | bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx); | |
6539 | ||
6540 | need_relocs = (h == NULL | |
6541 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6542 | || h->root.type != bfd_link_hash_undefweak); | |
6543 | ||
6544 | BFD_ASSERT (globals->root.srelgot != NULL); | |
6545 | BFD_ASSERT (globals->root.sgot != NULL); | |
6546 | ||
6547 | if (need_relocs) | |
6548 | { | |
6549 | bfd_byte *loc; | |
6550 | Elf_Internal_Rela rela; | |
a6bb11b2 YZ |
6551 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC)); |
6552 | ||
a06ea964 NC |
6553 | rela.r_addend = 0; |
6554 | rela.r_offset = (globals->root.sgotplt->output_section->vma | |
6555 | + globals->root.sgotplt->output_offset | |
6556 | + off + globals->sgotplt_jump_table_size); | |
6557 | ||
6558 | if (indx == 0) | |
6559 | rela.r_addend = relocation - dtpoff_base (info); | |
6560 | ||
6561 | /* Allocate the next available slot in the PLT reloc | |
6562 | section to hold our R_AARCH64_TLSDESC, the next | |
6563 | available slot is determined from reloc_count, | |
6564 | which we step. But note, reloc_count was | |
6565 | artifically moved down while allocating slots for | |
6566 | real PLT relocs such that all of the PLT relocs | |
6567 | will fit above the initial reloc_count and the | |
6568 | extra stuff will fit below. */ | |
6569 | loc = globals->root.srelplt->contents; | |
6570 | loc += globals->root.srelplt->reloc_count++ | |
6571 | * RELOC_SIZE (globals); | |
6572 | ||
cec5225b | 6573 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 6574 | |
cec5225b | 6575 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
6576 | globals->root.sgotplt->contents + off + |
6577 | globals->sgotplt_jump_table_size); | |
cec5225b | 6578 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
6579 | globals->root.sgotplt->contents + off + |
6580 | globals->sgotplt_jump_table_size + | |
6581 | GOT_ENTRY_SIZE); | |
6582 | } | |
6583 | ||
6584 | symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx); | |
6585 | } | |
6586 | break; | |
a6bb11b2 YZ |
6587 | default: |
6588 | break; | |
a06ea964 NC |
6589 | } |
6590 | ||
a06ea964 | 6591 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
07d6d2b8 AM |
6592 | because such sections are not SEC_ALLOC and thus ld.so will |
6593 | not process them. */ | |
a06ea964 NC |
6594 | if (unresolved_reloc |
6595 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
6596 | && h->def_dynamic) | |
6597 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
6598 | +rel->r_offset) != (bfd_vma) - 1) | |
6599 | { | |
4eca0228 | 6600 | _bfd_error_handler |
695344c0 | 6601 | /* xgettext:c-format */ |
2dcf00ce AM |
6602 | (_("%pB(%pA+%#" PRIx64 "): " |
6603 | "unresolvable %s relocation against symbol `%s'"), | |
6604 | input_bfd, input_section, (uint64_t) rel->r_offset, howto->name, | |
a06ea964 NC |
6605 | h->root.root.string); |
6606 | return FALSE; | |
6607 | } | |
6608 | ||
6609 | if (r != bfd_reloc_ok && r != bfd_reloc_continue) | |
6610 | { | |
c674f5cd | 6611 | bfd_reloc_code_real_type real_r_type |
0aa13fee | 6612 | = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type); |
c674f5cd | 6613 | |
a06ea964 NC |
6614 | switch (r) |
6615 | { | |
6616 | case bfd_reloc_overflow: | |
1a72702b AM |
6617 | (*info->callbacks->reloc_overflow) |
6618 | (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, | |
6619 | input_bfd, input_section, rel->r_offset); | |
c674f5cd JW |
6620 | if (real_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
6621 | || real_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
6622 | { | |
6623 | (*info->callbacks->warning) | |
6624 | (info, | |
90b6238f | 6625 | _("too many GOT entries for -fpic, " |
c674f5cd JW |
6626 | "please recompile with -fPIC"), |
6627 | name, input_bfd, input_section, rel->r_offset); | |
6628 | return FALSE; | |
6629 | } | |
027e9c75 NC |
6630 | /* Overflow can occur when a variable is referenced with a type |
6631 | that has a larger alignment than the type with which it was | |
6632 | declared. eg: | |
6633 | file1.c: extern int foo; int a (void) { return foo; } | |
6634 | file2.c: char bar, foo, baz; | |
6635 | If the variable is placed into a data section at an offset | |
6636 | that is incompatible with the larger alignment requirement | |
6637 | overflow will occur. (Strictly speaking this is not overflow | |
6638 | but rather an alignment problem, but the bfd_reloc_ error | |
6639 | enum does not have a value to cover that situation). | |
6640 | ||
6641 | Try to catch this situation here and provide a more helpful | |
6642 | error message to the user. */ | |
6643 | if (addend & ((1 << howto->rightshift) - 1) | |
6644 | /* FIXME: Are we testing all of the appropriate reloc | |
6645 | types here ? */ | |
6646 | && (real_r_type == BFD_RELOC_AARCH64_LD_LO19_PCREL | |
6647 | || real_r_type == BFD_RELOC_AARCH64_LDST16_LO12 | |
6648 | || real_r_type == BFD_RELOC_AARCH64_LDST32_LO12 | |
6649 | || real_r_type == BFD_RELOC_AARCH64_LDST64_LO12 | |
6650 | || real_r_type == BFD_RELOC_AARCH64_LDST128_LO12)) | |
6651 | { | |
6652 | info->callbacks->warning | |
90b6238f | 6653 | (info, _("one possible cause of this error is that the \ |
027e9c75 | 6654 | symbol is being referenced in the indicated code as if it had a larger \ |
90b6238f | 6655 | alignment than was declared where it was defined"), |
027e9c75 NC |
6656 | name, input_bfd, input_section, rel->r_offset); |
6657 | } | |
a06ea964 NC |
6658 | break; |
6659 | ||
6660 | case bfd_reloc_undefined: | |
1a72702b AM |
6661 | (*info->callbacks->undefined_symbol) |
6662 | (info, name, input_bfd, input_section, rel->r_offset, TRUE); | |
a06ea964 NC |
6663 | break; |
6664 | ||
6665 | case bfd_reloc_outofrange: | |
6666 | error_message = _("out of range"); | |
6667 | goto common_error; | |
6668 | ||
6669 | case bfd_reloc_notsupported: | |
6670 | error_message = _("unsupported relocation"); | |
6671 | goto common_error; | |
6672 | ||
6673 | case bfd_reloc_dangerous: | |
6674 | /* error_message should already be set. */ | |
6675 | goto common_error; | |
6676 | ||
6677 | default: | |
6678 | error_message = _("unknown error"); | |
6679 | /* Fall through. */ | |
6680 | ||
6681 | common_error: | |
6682 | BFD_ASSERT (error_message != NULL); | |
1a72702b AM |
6683 | (*info->callbacks->reloc_dangerous) |
6684 | (info, error_message, input_bfd, input_section, rel->r_offset); | |
a06ea964 NC |
6685 | break; |
6686 | } | |
6687 | } | |
027e9c75 NC |
6688 | |
6689 | if (!save_addend) | |
6690 | addend = 0; | |
a06ea964 NC |
6691 | } |
6692 | ||
6693 | return TRUE; | |
6694 | } | |
6695 | ||
6696 | /* Set the right machine number. */ | |
6697 | ||
6698 | static bfd_boolean | |
cec5225b | 6699 | elfNN_aarch64_object_p (bfd *abfd) |
a06ea964 | 6700 | { |
cec5225b YZ |
6701 | #if ARCH_SIZE == 32 |
6702 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32); | |
6703 | #else | |
a06ea964 | 6704 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64); |
cec5225b | 6705 | #endif |
a06ea964 NC |
6706 | return TRUE; |
6707 | } | |
6708 | ||
6709 | /* Function to keep AArch64 specific flags in the ELF header. */ | |
6710 | ||
6711 | static bfd_boolean | |
cec5225b | 6712 | elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags) |
a06ea964 NC |
6713 | { |
6714 | if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags) | |
6715 | { | |
6716 | } | |
6717 | else | |
6718 | { | |
6719 | elf_elfheader (abfd)->e_flags = flags; | |
6720 | elf_flags_init (abfd) = TRUE; | |
6721 | } | |
6722 | ||
6723 | return TRUE; | |
6724 | } | |
6725 | ||
a06ea964 NC |
6726 | /* Merge backend specific data from an object file to the output |
6727 | object file when linking. */ | |
6728 | ||
6729 | static bfd_boolean | |
50e03d47 | 6730 | elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
a06ea964 | 6731 | { |
50e03d47 | 6732 | bfd *obfd = info->output_bfd; |
a06ea964 NC |
6733 | flagword out_flags; |
6734 | flagword in_flags; | |
6735 | bfd_boolean flags_compatible = TRUE; | |
6736 | asection *sec; | |
6737 | ||
6738 | /* Check if we have the same endianess. */ | |
50e03d47 | 6739 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
a06ea964 NC |
6740 | return FALSE; |
6741 | ||
6742 | if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd)) | |
6743 | return TRUE; | |
6744 | ||
6745 | /* The input BFD must have had its flags initialised. */ | |
6746 | /* The following seems bogus to me -- The flags are initialized in | |
6747 | the assembler but I don't think an elf_flags_init field is | |
6748 | written into the object. */ | |
6749 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ | |
6750 | ||
6751 | in_flags = elf_elfheader (ibfd)->e_flags; | |
6752 | out_flags = elf_elfheader (obfd)->e_flags; | |
6753 | ||
6754 | if (!elf_flags_init (obfd)) | |
6755 | { | |
6756 | /* If the input is the default architecture and had the default | |
07d6d2b8 AM |
6757 | flags then do not bother setting the flags for the output |
6758 | architecture, instead allow future merges to do this. If no | |
6759 | future merges ever set these flags then they will retain their | |
6760 | uninitialised values, which surprise surprise, correspond | |
6761 | to the default values. */ | |
a06ea964 NC |
6762 | if (bfd_get_arch_info (ibfd)->the_default |
6763 | && elf_elfheader (ibfd)->e_flags == 0) | |
6764 | return TRUE; | |
6765 | ||
6766 | elf_flags_init (obfd) = TRUE; | |
6767 | elf_elfheader (obfd)->e_flags = in_flags; | |
6768 | ||
6769 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
6770 | && bfd_get_arch_info (obfd)->the_default) | |
6771 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
6772 | bfd_get_mach (ibfd)); | |
6773 | ||
6774 | return TRUE; | |
6775 | } | |
6776 | ||
6777 | /* Identical flags must be compatible. */ | |
6778 | if (in_flags == out_flags) | |
6779 | return TRUE; | |
6780 | ||
6781 | /* Check to see if the input BFD actually contains any sections. If | |
6782 | not, its flags may not have been initialised either, but it | |
6783 | cannot actually cause any incompatiblity. Do not short-circuit | |
6784 | dynamic objects; their section list may be emptied by | |
6785 | elf_link_add_object_symbols. | |
6786 | ||
6787 | Also check to see if there are no code sections in the input. | |
6788 | In this case there is no need to check for code specific flags. | |
6789 | XXX - do we need to worry about floating-point format compatability | |
6790 | in data sections ? */ | |
6791 | if (!(ibfd->flags & DYNAMIC)) | |
6792 | { | |
6793 | bfd_boolean null_input_bfd = TRUE; | |
6794 | bfd_boolean only_data_sections = TRUE; | |
6795 | ||
6796 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
6797 | { | |
6798 | if ((bfd_get_section_flags (ibfd, sec) | |
6799 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
6800 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
6801 | only_data_sections = FALSE; | |
6802 | ||
6803 | null_input_bfd = FALSE; | |
6804 | break; | |
6805 | } | |
6806 | ||
6807 | if (null_input_bfd || only_data_sections) | |
6808 | return TRUE; | |
6809 | } | |
6810 | ||
6811 | return flags_compatible; | |
6812 | } | |
6813 | ||
6814 | /* Display the flags field. */ | |
6815 | ||
6816 | static bfd_boolean | |
cec5225b | 6817 | elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr) |
a06ea964 NC |
6818 | { |
6819 | FILE *file = (FILE *) ptr; | |
6820 | unsigned long flags; | |
6821 | ||
6822 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
6823 | ||
6824 | /* Print normal ELF private data. */ | |
6825 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
6826 | ||
6827 | flags = elf_elfheader (abfd)->e_flags; | |
6828 | /* Ignore init flag - it may not be set, despite the flags field | |
6829 | containing valid data. */ | |
6830 | ||
6831 | /* xgettext:c-format */ | |
6832 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
6833 | ||
6834 | if (flags) | |
6835 | fprintf (file, _("<Unrecognised flag bits set>")); | |
6836 | ||
6837 | fputc ('\n', file); | |
6838 | ||
6839 | return TRUE; | |
6840 | } | |
6841 | ||
63c1f59d AM |
6842 | /* Find dynamic relocs for H that apply to read-only sections. */ |
6843 | ||
6844 | static asection * | |
6845 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
6846 | { | |
6847 | struct elf_dyn_relocs *p; | |
6848 | ||
6849 | for (p = elf_aarch64_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
6850 | { | |
6851 | asection *s = p->sec->output_section; | |
6852 | ||
6853 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
6854 | return p->sec; | |
6855 | } | |
6856 | return NULL; | |
6857 | } | |
6858 | ||
6353d82b JW |
6859 | /* Return true if we need copy relocation against EH. */ |
6860 | ||
6861 | static bfd_boolean | |
6862 | need_copy_relocation_p (struct elf_aarch64_link_hash_entry *eh) | |
6863 | { | |
6864 | struct elf_dyn_relocs *p; | |
6865 | asection *s; | |
6866 | ||
6867 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6868 | { | |
6869 | /* If there is any pc-relative reference, we need to keep copy relocation | |
6870 | to avoid propagating the relocation into runtime that current glibc | |
6871 | does not support. */ | |
6872 | if (p->pc_count) | |
6873 | return TRUE; | |
6874 | ||
6875 | s = p->sec->output_section; | |
6876 | /* Need copy relocation if it's against read-only section. */ | |
6877 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
6878 | return TRUE; | |
6879 | } | |
6880 | ||
6881 | return FALSE; | |
6882 | } | |
6883 | ||
a06ea964 NC |
6884 | /* Adjust a symbol defined by a dynamic object and referenced by a |
6885 | regular object. The current definition is in some section of the | |
6886 | dynamic object, but we're not including those sections. We have to | |
6887 | change the definition to something the rest of the link can | |
6888 | understand. */ | |
6889 | ||
6890 | static bfd_boolean | |
cec5225b | 6891 | elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info, |
a06ea964 NC |
6892 | struct elf_link_hash_entry *h) |
6893 | { | |
cec5225b | 6894 | struct elf_aarch64_link_hash_table *htab; |
5474d94f | 6895 | asection *s, *srel; |
a06ea964 NC |
6896 | |
6897 | /* If this is a function, put it in the procedure linkage table. We | |
6898 | will fill in the contents of the procedure linkage table later, | |
6899 | when we know the address of the .got section. */ | |
1419bbe5 | 6900 | if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt) |
a06ea964 NC |
6901 | { |
6902 | if (h->plt.refcount <= 0 | |
1419bbe5 WN |
6903 | || (h->type != STT_GNU_IFUNC |
6904 | && (SYMBOL_CALLS_LOCAL (info, h) | |
6905 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
6906 | && h->root.type == bfd_link_hash_undefweak)))) | |
a06ea964 NC |
6907 | { |
6908 | /* This case can occur if we saw a CALL26 reloc in | |
6909 | an input file, but the symbol wasn't referred to | |
6910 | by a dynamic object or all references were | |
6911 | garbage collected. In which case we can end up | |
6912 | resolving. */ | |
6913 | h->plt.offset = (bfd_vma) - 1; | |
6914 | h->needs_plt = 0; | |
6915 | } | |
6916 | ||
6917 | return TRUE; | |
6918 | } | |
6919 | else | |
80de0c6d | 6920 | /* Otherwise, reset to -1. */ |
a06ea964 NC |
6921 | h->plt.offset = (bfd_vma) - 1; |
6922 | ||
6923 | ||
6924 | /* If this is a weak symbol, and there is a real definition, the | |
6925 | processor independent code will have arranged for us to see the | |
6926 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 6927 | if (h->is_weakalias) |
a06ea964 | 6928 | { |
60d67dc8 AM |
6929 | struct elf_link_hash_entry *def = weakdef (h); |
6930 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
6931 | h->root.u.def.section = def->root.u.def.section; | |
6932 | h->root.u.def.value = def->root.u.def.value; | |
a06ea964 | 6933 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
60d67dc8 | 6934 | h->non_got_ref = def->non_got_ref; |
a06ea964 NC |
6935 | return TRUE; |
6936 | } | |
6937 | ||
6938 | /* If we are creating a shared library, we must presume that the | |
6939 | only references to the symbol are via the global offset table. | |
6940 | For such cases we need not do anything here; the relocations will | |
6941 | be handled correctly by relocate_section. */ | |
0e1862bb | 6942 | if (bfd_link_pic (info)) |
a06ea964 NC |
6943 | return TRUE; |
6944 | ||
6945 | /* If there are no references to this symbol that do not use the | |
6946 | GOT, we don't need to generate a copy reloc. */ | |
6947 | if (!h->non_got_ref) | |
6948 | return TRUE; | |
6949 | ||
6950 | /* If -z nocopyreloc was given, we won't generate them either. */ | |
6951 | if (info->nocopyreloc) | |
6952 | { | |
6953 | h->non_got_ref = 0; | |
6954 | return TRUE; | |
6955 | } | |
6956 | ||
6353d82b JW |
6957 | if (ELIMINATE_COPY_RELOCS) |
6958 | { | |
6959 | struct elf_aarch64_link_hash_entry *eh; | |
dce2246a | 6960 | /* If we don't find any dynamic relocs in read-only sections, then |
6353d82b JW |
6961 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
6962 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
6963 | if (!need_copy_relocation_p (eh)) | |
6964 | { | |
6965 | h->non_got_ref = 0; | |
6966 | return TRUE; | |
6967 | } | |
6968 | } | |
6969 | ||
a06ea964 NC |
6970 | /* We must allocate the symbol in our .dynbss section, which will |
6971 | become part of the .bss section of the executable. There will be | |
6972 | an entry for this symbol in the .dynsym section. The dynamic | |
6973 | object will contain position independent code, so all references | |
6974 | from the dynamic object to this symbol will go through the global | |
6975 | offset table. The dynamic linker will use the .dynsym entry to | |
6976 | determine the address it must put in the global offset table, so | |
6977 | both the dynamic object and the regular object will refer to the | |
6978 | same memory location for the variable. */ | |
6979 | ||
cec5225b | 6980 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
6981 | |
6982 | /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker | |
6983 | to copy the initial value out of the dynamic object and into the | |
6984 | runtime process image. */ | |
5474d94f AM |
6985 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
6986 | { | |
6987 | s = htab->root.sdynrelro; | |
6988 | srel = htab->root.sreldynrelro; | |
6989 | } | |
6990 | else | |
6991 | { | |
6992 | s = htab->root.sdynbss; | |
6993 | srel = htab->root.srelbss; | |
6994 | } | |
a06ea964 NC |
6995 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
6996 | { | |
5474d94f | 6997 | srel->size += RELOC_SIZE (htab); |
a06ea964 NC |
6998 | h->needs_copy = 1; |
6999 | } | |
7000 | ||
6cabe1ea | 7001 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
a06ea964 NC |
7002 | |
7003 | } | |
7004 | ||
7005 | static bfd_boolean | |
cec5225b | 7006 | elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number) |
a06ea964 NC |
7007 | { |
7008 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 7009 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
7010 | if (locals == NULL) |
7011 | { | |
7012 | locals = (struct elf_aarch64_local_symbol *) | |
7013 | bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol)); | |
7014 | if (locals == NULL) | |
7015 | return FALSE; | |
cec5225b | 7016 | elf_aarch64_locals (abfd) = locals; |
a06ea964 NC |
7017 | } |
7018 | return TRUE; | |
7019 | } | |
7020 | ||
cc0efaa8 MS |
7021 | /* Create the .got section to hold the global offset table. */ |
7022 | ||
7023 | static bfd_boolean | |
7024 | aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) | |
7025 | { | |
7026 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7027 | flagword flags; | |
7028 | asection *s; | |
7029 | struct elf_link_hash_entry *h; | |
7030 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
7031 | ||
7032 | /* This function may be called more than once. */ | |
ce558b89 | 7033 | if (htab->sgot != NULL) |
cc0efaa8 MS |
7034 | return TRUE; |
7035 | ||
7036 | flags = bed->dynamic_sec_flags; | |
7037 | ||
7038 | s = bfd_make_section_anyway_with_flags (abfd, | |
7039 | (bed->rela_plts_and_copies_p | |
7040 | ? ".rela.got" : ".rel.got"), | |
7041 | (bed->dynamic_sec_flags | |
7042 | | SEC_READONLY)); | |
7043 | if (s == NULL | |
7044 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
7045 | return FALSE; | |
7046 | htab->srelgot = s; | |
7047 | ||
7048 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); | |
7049 | if (s == NULL | |
7050 | || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
7051 | return FALSE; | |
7052 | htab->sgot = s; | |
7053 | htab->sgot->size += GOT_ENTRY_SIZE; | |
7054 | ||
7055 | if (bed->want_got_sym) | |
7056 | { | |
7057 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
7058 | (or .got.plt) section. We don't do this in the linker script | |
7059 | because we don't want to define the symbol if we are not creating | |
7060 | a global offset table. */ | |
7061 | h = _bfd_elf_define_linkage_sym (abfd, info, s, | |
7062 | "_GLOBAL_OFFSET_TABLE_"); | |
7063 | elf_hash_table (info)->hgot = h; | |
7064 | if (h == NULL) | |
7065 | return FALSE; | |
7066 | } | |
7067 | ||
7068 | if (bed->want_got_plt) | |
7069 | { | |
7070 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); | |
7071 | if (s == NULL | |
7072 | || !bfd_set_section_alignment (abfd, s, | |
7073 | bed->s->log_file_align)) | |
7074 | return FALSE; | |
7075 | htab->sgotplt = s; | |
7076 | } | |
7077 | ||
7078 | /* The first bit of the global offset table is the header. */ | |
7079 | s->size += bed->got_header_size; | |
7080 | ||
7081 | return TRUE; | |
7082 | } | |
7083 | ||
a06ea964 NC |
7084 | /* Look through the relocs for a section during the first phase. */ |
7085 | ||
7086 | static bfd_boolean | |
cec5225b | 7087 | elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
a06ea964 NC |
7088 | asection *sec, const Elf_Internal_Rela *relocs) |
7089 | { | |
7090 | Elf_Internal_Shdr *symtab_hdr; | |
7091 | struct elf_link_hash_entry **sym_hashes; | |
7092 | const Elf_Internal_Rela *rel; | |
7093 | const Elf_Internal_Rela *rel_end; | |
7094 | asection *sreloc; | |
7095 | ||
cec5225b | 7096 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 7097 | |
0e1862bb | 7098 | if (bfd_link_relocatable (info)) |
a06ea964 NC |
7099 | return TRUE; |
7100 | ||
7101 | BFD_ASSERT (is_aarch64_elf (abfd)); | |
7102 | ||
cec5225b | 7103 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7104 | sreloc = NULL; |
7105 | ||
7106 | symtab_hdr = &elf_symtab_hdr (abfd); | |
7107 | sym_hashes = elf_sym_hashes (abfd); | |
a06ea964 NC |
7108 | |
7109 | rel_end = relocs + sec->reloc_count; | |
7110 | for (rel = relocs; rel < rel_end; rel++) | |
7111 | { | |
7112 | struct elf_link_hash_entry *h; | |
d42c267e | 7113 | unsigned int r_symndx; |
a06ea964 | 7114 | unsigned int r_type; |
a6bb11b2 | 7115 | bfd_reloc_code_real_type bfd_r_type; |
1419bbe5 | 7116 | Elf_Internal_Sym *isym; |
a06ea964 | 7117 | |
cec5225b YZ |
7118 | r_symndx = ELFNN_R_SYM (rel->r_info); |
7119 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 NC |
7120 | |
7121 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
7122 | { | |
695344c0 | 7123 | /* xgettext:c-format */ |
871b3ab2 | 7124 | _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd, r_symndx); |
a06ea964 NC |
7125 | return FALSE; |
7126 | } | |
7127 | ||
ed5acf27 | 7128 | if (r_symndx < symtab_hdr->sh_info) |
1419bbe5 WN |
7129 | { |
7130 | /* A local symbol. */ | |
7131 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
7132 | abfd, r_symndx); | |
7133 | if (isym == NULL) | |
7134 | return FALSE; | |
7135 | ||
7136 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
7137 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
7138 | { | |
7139 | h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, | |
7140 | TRUE); | |
7141 | if (h == NULL) | |
7142 | return FALSE; | |
7143 | ||
7144 | /* Fake a STT_GNU_IFUNC symbol. */ | |
7145 | h->type = STT_GNU_IFUNC; | |
7146 | h->def_regular = 1; | |
7147 | h->ref_regular = 1; | |
7148 | h->forced_local = 1; | |
7149 | h->root.type = bfd_link_hash_defined; | |
7150 | } | |
7151 | else | |
7152 | h = NULL; | |
7153 | } | |
a06ea964 NC |
7154 | else |
7155 | { | |
7156 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
7157 | while (h->root.type == bfd_link_hash_indirect | |
7158 | || h->root.type == bfd_link_hash_warning) | |
7159 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7160 | } | |
7161 | ||
7162 | /* Could be done earlier, if h were already available. */ | |
a6bb11b2 | 7163 | bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx); |
a06ea964 | 7164 | |
1419bbe5 WN |
7165 | if (h != NULL) |
7166 | { | |
18f822a0 JW |
7167 | /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. |
7168 | This shows up in particular in an R_AARCH64_PREL64 in large model | |
7169 | when calculating the pc-relative address to .got section which is | |
7170 | used to initialize the gp register. */ | |
7171 | if (h->root.root.string | |
7172 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
7173 | { | |
7174 | if (htab->root.dynobj == NULL) | |
7175 | htab->root.dynobj = abfd; | |
7176 | ||
7177 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
7178 | return FALSE; | |
7179 | ||
7180 | BFD_ASSERT (h == htab->root.hgot); | |
7181 | } | |
7182 | ||
1419bbe5 WN |
7183 | /* Create the ifunc sections for static executables. If we |
7184 | never see an indirect function symbol nor we are building | |
7185 | a static executable, those sections will be empty and | |
7186 | won't appear in output. */ | |
7187 | switch (bfd_r_type) | |
7188 | { | |
7189 | default: | |
7190 | break; | |
7191 | ||
ce336788 JW |
7192 | case BFD_RELOC_AARCH64_ADD_LO12: |
7193 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: | |
7194 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
1419bbe5 | 7195 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 7196 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
1419bbe5 | 7197 | case BFD_RELOC_AARCH64_JUMP26: |
7018c030 | 7198 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
1419bbe5 | 7199 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 7200 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 7201 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
1419bbe5 | 7202 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 7203 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 7204 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
ce336788 | 7205 | case BFD_RELOC_AARCH64_NN: |
1419bbe5 WN |
7206 | if (htab->root.dynobj == NULL) |
7207 | htab->root.dynobj = abfd; | |
7208 | if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info)) | |
7209 | return FALSE; | |
7210 | break; | |
7211 | } | |
7212 | ||
2d0ca824 | 7213 | /* It is referenced by a non-shared object. */ |
1419bbe5 | 7214 | h->ref_regular = 1; |
1419bbe5 WN |
7215 | } |
7216 | ||
a6bb11b2 | 7217 | switch (bfd_r_type) |
a06ea964 | 7218 | { |
79e74192 RL |
7219 | case BFD_RELOC_AARCH64_16: |
7220 | #if ARCH_SIZE == 64 | |
7221 | case BFD_RELOC_AARCH64_32: | |
7222 | #endif | |
279b2f94 | 7223 | if (bfd_link_pic (info) && (sec->flags & SEC_ALLOC) != 0) |
79e74192 | 7224 | { |
279b2f94 RL |
7225 | if (h != NULL |
7226 | /* This is an absolute symbol. It represents a value instead | |
7227 | of an address. */ | |
7228 | && ((h->root.type == bfd_link_hash_defined | |
7229 | && bfd_is_abs_section (h->root.u.def.section)) | |
7230 | /* This is an undefined symbol. */ | |
7231 | || h->root.type == bfd_link_hash_undefined)) | |
7232 | break; | |
7233 | ||
7234 | /* For local symbols, defined global symbols in a non-ABS section, | |
7235 | it is assumed that the value is an address. */ | |
79e74192 RL |
7236 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; |
7237 | _bfd_error_handler | |
7238 | /* xgettext:c-format */ | |
871b3ab2 | 7239 | (_("%pB: relocation %s against `%s' can not be used when making " |
79e74192 RL |
7240 | "a shared object"), |
7241 | abfd, elfNN_aarch64_howto_table[howto_index].name, | |
7242 | (h) ? h->root.root.string : "a local symbol"); | |
7243 | bfd_set_error (bfd_error_bad_value); | |
7244 | return FALSE; | |
7245 | } | |
7246 | else | |
7247 | break; | |
7248 | ||
6353d82b JW |
7249 | case BFD_RELOC_AARCH64_MOVW_G0_NC: |
7250 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
7251 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
7252 | case BFD_RELOC_AARCH64_MOVW_G3: | |
7253 | if (bfd_link_pic (info)) | |
7254 | { | |
7255 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
7256 | _bfd_error_handler | |
7257 | /* xgettext:c-format */ | |
871b3ab2 | 7258 | (_("%pB: relocation %s against `%s' can not be used when making " |
6353d82b JW |
7259 | "a shared object; recompile with -fPIC"), |
7260 | abfd, elfNN_aarch64_howto_table[howto_index].name, | |
7261 | (h) ? h->root.root.string : "a local symbol"); | |
7262 | bfd_set_error (bfd_error_bad_value); | |
7263 | return FALSE; | |
7264 | } | |
7265 | /* Fall through. */ | |
7266 | ||
7267 | case BFD_RELOC_AARCH64_16_PCREL: | |
7268 | case BFD_RELOC_AARCH64_32_PCREL: | |
7269 | case BFD_RELOC_AARCH64_64_PCREL: | |
7270 | case BFD_RELOC_AARCH64_ADD_LO12: | |
7271 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: | |
7272 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
7273 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
7274 | case BFD_RELOC_AARCH64_LDST128_LO12: | |
7275 | case BFD_RELOC_AARCH64_LDST16_LO12: | |
7276 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
7277 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
7278 | case BFD_RELOC_AARCH64_LDST8_LO12: | |
7279 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
7280 | if (h == NULL || bfd_link_pic (info)) | |
7281 | break; | |
7282 | /* Fall through. */ | |
7283 | ||
a6bb11b2 | 7284 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
7285 | |
7286 | /* We don't need to handle relocs into sections not going into | |
7287 | the "real" output. */ | |
7288 | if ((sec->flags & SEC_ALLOC) == 0) | |
7289 | break; | |
7290 | ||
7291 | if (h != NULL) | |
7292 | { | |
0e1862bb | 7293 | if (!bfd_link_pic (info)) |
a06ea964 NC |
7294 | h->non_got_ref = 1; |
7295 | ||
7296 | h->plt.refcount += 1; | |
7297 | h->pointer_equality_needed = 1; | |
7298 | } | |
7299 | ||
7300 | /* No need to do anything if we're not creating a shared | |
7301 | object. */ | |
6353d82b JW |
7302 | if (!(bfd_link_pic (info) |
7303 | /* If on the other hand, we are creating an executable, we | |
7304 | may need to keep relocations for symbols satisfied by a | |
7305 | dynamic library if we manage to avoid copy relocs for the | |
7306 | symbol. | |
7307 | ||
7308 | NOTE: Currently, there is no support of copy relocs | |
7309 | elimination on pc-relative relocation types, because there is | |
7310 | no dynamic relocation support for them in glibc. We still | |
7311 | record the dynamic symbol reference for them. This is | |
7312 | because one symbol may be referenced by both absolute | |
7313 | relocation (for example, BFD_RELOC_AARCH64_NN) and | |
7314 | pc-relative relocation. We need full symbol reference | |
7315 | information to make correct decision later in | |
7316 | elfNN_aarch64_adjust_dynamic_symbol. */ | |
7317 | || (ELIMINATE_COPY_RELOCS | |
7318 | && !bfd_link_pic (info) | |
7319 | && h != NULL | |
7320 | && (h->root.type == bfd_link_hash_defweak | |
7321 | || !h->def_regular)))) | |
a06ea964 NC |
7322 | break; |
7323 | ||
7324 | { | |
7325 | struct elf_dyn_relocs *p; | |
7326 | struct elf_dyn_relocs **head; | |
6353d82b | 7327 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; |
a06ea964 NC |
7328 | |
7329 | /* We must copy these reloc types into the output file. | |
7330 | Create a reloc section in dynobj and make room for | |
7331 | this reloc. */ | |
7332 | if (sreloc == NULL) | |
7333 | { | |
7334 | if (htab->root.dynobj == NULL) | |
7335 | htab->root.dynobj = abfd; | |
7336 | ||
7337 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
0608afa7 | 7338 | (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE); |
a06ea964 NC |
7339 | |
7340 | if (sreloc == NULL) | |
7341 | return FALSE; | |
7342 | } | |
7343 | ||
7344 | /* If this is a global symbol, we count the number of | |
7345 | relocations we need for this symbol. */ | |
7346 | if (h != NULL) | |
7347 | { | |
cec5225b YZ |
7348 | struct elf_aarch64_link_hash_entry *eh; |
7349 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
7350 | head = &eh->dyn_relocs; |
7351 | } | |
7352 | else | |
7353 | { | |
7354 | /* Track dynamic relocs needed for local syms too. | |
7355 | We really need local syms available to do this | |
7356 | easily. Oh well. */ | |
7357 | ||
7358 | asection *s; | |
7359 | void **vpp; | |
a06ea964 NC |
7360 | |
7361 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
7362 | abfd, r_symndx); | |
7363 | if (isym == NULL) | |
7364 | return FALSE; | |
7365 | ||
7366 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
7367 | if (s == NULL) | |
7368 | s = sec; | |
7369 | ||
7370 | /* Beware of type punned pointers vs strict aliasing | |
7371 | rules. */ | |
7372 | vpp = &(elf_section_data (s)->local_dynrel); | |
7373 | head = (struct elf_dyn_relocs **) vpp; | |
7374 | } | |
7375 | ||
7376 | p = *head; | |
7377 | if (p == NULL || p->sec != sec) | |
7378 | { | |
7379 | bfd_size_type amt = sizeof *p; | |
7380 | p = ((struct elf_dyn_relocs *) | |
7381 | bfd_zalloc (htab->root.dynobj, amt)); | |
7382 | if (p == NULL) | |
7383 | return FALSE; | |
7384 | p->next = *head; | |
7385 | *head = p; | |
7386 | p->sec = sec; | |
7387 | } | |
7388 | ||
7389 | p->count += 1; | |
7390 | ||
6353d82b JW |
7391 | if (elfNN_aarch64_howto_table[howto_index].pc_relative) |
7392 | p->pc_count += 1; | |
a06ea964 NC |
7393 | } |
7394 | break; | |
7395 | ||
7396 | /* RR: We probably want to keep a consistency check that | |
7397 | there are no dangling GOT_PAGE relocs. */ | |
a6bb11b2 | 7398 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
7bcccb57 | 7399 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
7018c030 | 7400 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
7bcccb57 | 7401 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 7402 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 7403 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
7bcccb57 | 7404 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
dc8008f5 | 7405 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC: |
74a1bfe1 | 7406 | case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1: |
f955cccf | 7407 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12: |
7bcccb57 | 7408 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 7409 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
7bcccb57 | 7410 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
f955cccf | 7411 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12: |
1ada945d | 7412 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
0484b454 RL |
7413 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC: |
7414 | case BFD_RELOC_AARCH64_TLSDESC_OFF_G1: | |
a6bb11b2 | 7415 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
7bcccb57 | 7416 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 7417 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
7ba7cfe4 | 7418 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC: |
94facae3 | 7419 | case BFD_RELOC_AARCH64_TLSGD_MOVW_G1: |
a6bb11b2 | 7420 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 7421 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
7bcccb57 | 7422 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 7423 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
3b957e5b RL |
7424 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC: |
7425 | case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1: | |
73f925cc | 7426 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 7427 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 7428 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
b7a944fe RL |
7429 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: |
7430 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
7431 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
a06ea964 NC |
7432 | { |
7433 | unsigned got_type; | |
7434 | unsigned old_got_type; | |
7435 | ||
a6bb11b2 | 7436 | got_type = aarch64_reloc_got_type (bfd_r_type); |
a06ea964 NC |
7437 | |
7438 | if (h) | |
7439 | { | |
7440 | h->got.refcount += 1; | |
cec5225b | 7441 | old_got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
7442 | } |
7443 | else | |
7444 | { | |
7445 | struct elf_aarch64_local_symbol *locals; | |
7446 | ||
cec5225b | 7447 | if (!elfNN_aarch64_allocate_local_symbols |
a06ea964 NC |
7448 | (abfd, symtab_hdr->sh_info)) |
7449 | return FALSE; | |
7450 | ||
cec5225b | 7451 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
7452 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
7453 | locals[r_symndx].got_refcount += 1; | |
7454 | old_got_type = locals[r_symndx].got_type; | |
7455 | } | |
7456 | ||
7457 | /* If a variable is accessed with both general dynamic TLS | |
7458 | methods, two slots may be created. */ | |
7459 | if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type)) | |
7460 | got_type |= old_got_type; | |
7461 | ||
7462 | /* We will already have issued an error message if there | |
7463 | is a TLS/non-TLS mismatch, based on the symbol type. | |
7464 | So just combine any TLS types needed. */ | |
7465 | if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL | |
7466 | && got_type != GOT_NORMAL) | |
7467 | got_type |= old_got_type; | |
7468 | ||
7469 | /* If the symbol is accessed by both IE and GD methods, we | |
7470 | are able to relax. Turn off the GD flag, without | |
7471 | messing up with any other kind of TLS types that may be | |
7472 | involved. */ | |
7473 | if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type)) | |
7474 | got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD); | |
7475 | ||
7476 | if (old_got_type != got_type) | |
7477 | { | |
7478 | if (h != NULL) | |
cec5225b | 7479 | elf_aarch64_hash_entry (h)->got_type = got_type; |
a06ea964 NC |
7480 | else |
7481 | { | |
7482 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 7483 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
7484 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
7485 | locals[r_symndx].got_type = got_type; | |
7486 | } | |
7487 | } | |
7488 | ||
cc0efaa8 MS |
7489 | if (htab->root.dynobj == NULL) |
7490 | htab->root.dynobj = abfd; | |
7491 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
7492 | return FALSE; | |
a06ea964 NC |
7493 | break; |
7494 | } | |
7495 | ||
a6bb11b2 YZ |
7496 | case BFD_RELOC_AARCH64_CALL26: |
7497 | case BFD_RELOC_AARCH64_JUMP26: | |
a06ea964 NC |
7498 | /* If this is a local symbol then we resolve it |
7499 | directly without creating a PLT entry. */ | |
7500 | if (h == NULL) | |
7501 | continue; | |
7502 | ||
7503 | h->needs_plt = 1; | |
1419bbe5 WN |
7504 | if (h->plt.refcount <= 0) |
7505 | h->plt.refcount = 1; | |
7506 | else | |
7507 | h->plt.refcount += 1; | |
a06ea964 | 7508 | break; |
a6bb11b2 YZ |
7509 | |
7510 | default: | |
7511 | break; | |
a06ea964 NC |
7512 | } |
7513 | } | |
a6bb11b2 | 7514 | |
a06ea964 NC |
7515 | return TRUE; |
7516 | } | |
7517 | ||
7518 | /* Treat mapping symbols as special target symbols. */ | |
7519 | ||
7520 | static bfd_boolean | |
cec5225b | 7521 | elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
7522 | asymbol *sym) |
7523 | { | |
7524 | return bfd_is_aarch64_special_symbol_name (sym->name, | |
7525 | BFD_AARCH64_SPECIAL_SYM_TYPE_ANY); | |
7526 | } | |
7527 | ||
7528 | /* This is a copy of elf_find_function () from elf.c except that | |
7529 | AArch64 mapping symbols are ignored when looking for function names. */ | |
7530 | ||
7531 | static bfd_boolean | |
7532 | aarch64_elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, | |
a06ea964 | 7533 | asymbol **symbols, |
fb167eb2 | 7534 | asection *section, |
a06ea964 NC |
7535 | bfd_vma offset, |
7536 | const char **filename_ptr, | |
7537 | const char **functionname_ptr) | |
7538 | { | |
7539 | const char *filename = NULL; | |
7540 | asymbol *func = NULL; | |
7541 | bfd_vma low_func = 0; | |
7542 | asymbol **p; | |
7543 | ||
7544 | for (p = symbols; *p != NULL; p++) | |
7545 | { | |
7546 | elf_symbol_type *q; | |
7547 | ||
7548 | q = (elf_symbol_type *) * p; | |
7549 | ||
7550 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) | |
7551 | { | |
7552 | default: | |
7553 | break; | |
7554 | case STT_FILE: | |
7555 | filename = bfd_asymbol_name (&q->symbol); | |
7556 | break; | |
7557 | case STT_FUNC: | |
7558 | case STT_NOTYPE: | |
7559 | /* Skip mapping symbols. */ | |
7560 | if ((q->symbol.flags & BSF_LOCAL) | |
7561 | && (bfd_is_aarch64_special_symbol_name | |
7562 | (q->symbol.name, BFD_AARCH64_SPECIAL_SYM_TYPE_ANY))) | |
7563 | continue; | |
7564 | /* Fall through. */ | |
7565 | if (bfd_get_section (&q->symbol) == section | |
7566 | && q->symbol.value >= low_func && q->symbol.value <= offset) | |
7567 | { | |
7568 | func = (asymbol *) q; | |
7569 | low_func = q->symbol.value; | |
7570 | } | |
7571 | break; | |
7572 | } | |
7573 | } | |
7574 | ||
7575 | if (func == NULL) | |
7576 | return FALSE; | |
7577 | ||
7578 | if (filename_ptr) | |
7579 | *filename_ptr = filename; | |
7580 | if (functionname_ptr) | |
7581 | *functionname_ptr = bfd_asymbol_name (func); | |
7582 | ||
7583 | return TRUE; | |
7584 | } | |
7585 | ||
7586 | ||
7587 | /* Find the nearest line to a particular section and offset, for error | |
7588 | reporting. This code is a duplicate of the code in elf.c, except | |
7589 | that it uses aarch64_elf_find_function. */ | |
7590 | ||
7591 | static bfd_boolean | |
cec5225b | 7592 | elfNN_aarch64_find_nearest_line (bfd *abfd, |
a06ea964 | 7593 | asymbol **symbols, |
fb167eb2 | 7594 | asection *section, |
a06ea964 NC |
7595 | bfd_vma offset, |
7596 | const char **filename_ptr, | |
7597 | const char **functionname_ptr, | |
fb167eb2 AM |
7598 | unsigned int *line_ptr, |
7599 | unsigned int *discriminator_ptr) | |
a06ea964 NC |
7600 | { |
7601 | bfd_boolean found = FALSE; | |
7602 | ||
fb167eb2 | 7603 | if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset, |
a06ea964 | 7604 | filename_ptr, functionname_ptr, |
fb167eb2 AM |
7605 | line_ptr, discriminator_ptr, |
7606 | dwarf_debug_sections, 0, | |
a06ea964 NC |
7607 | &elf_tdata (abfd)->dwarf2_find_line_info)) |
7608 | { | |
7609 | if (!*functionname_ptr) | |
fb167eb2 | 7610 | aarch64_elf_find_function (abfd, symbols, section, offset, |
a06ea964 NC |
7611 | *filename_ptr ? NULL : filename_ptr, |
7612 | functionname_ptr); | |
7613 | ||
7614 | return TRUE; | |
7615 | } | |
7616 | ||
fb167eb2 AM |
7617 | /* Skip _bfd_dwarf1_find_nearest_line since no known AArch64 |
7618 | toolchain uses DWARF1. */ | |
7619 | ||
a06ea964 NC |
7620 | if (!_bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, |
7621 | &found, filename_ptr, | |
7622 | functionname_ptr, line_ptr, | |
7623 | &elf_tdata (abfd)->line_info)) | |
7624 | return FALSE; | |
7625 | ||
7626 | if (found && (*functionname_ptr || *line_ptr)) | |
7627 | return TRUE; | |
7628 | ||
7629 | if (symbols == NULL) | |
7630 | return FALSE; | |
7631 | ||
fb167eb2 | 7632 | if (!aarch64_elf_find_function (abfd, symbols, section, offset, |
a06ea964 NC |
7633 | filename_ptr, functionname_ptr)) |
7634 | return FALSE; | |
7635 | ||
7636 | *line_ptr = 0; | |
7637 | return TRUE; | |
7638 | } | |
7639 | ||
7640 | static bfd_boolean | |
cec5225b | 7641 | elfNN_aarch64_find_inliner_info (bfd *abfd, |
a06ea964 NC |
7642 | const char **filename_ptr, |
7643 | const char **functionname_ptr, | |
7644 | unsigned int *line_ptr) | |
7645 | { | |
7646 | bfd_boolean found; | |
7647 | found = _bfd_dwarf2_find_inliner_info | |
7648 | (abfd, filename_ptr, | |
7649 | functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info); | |
7650 | return found; | |
7651 | } | |
7652 | ||
7653 | ||
7654 | static void | |
cec5225b | 7655 | elfNN_aarch64_post_process_headers (bfd *abfd, |
1419bbe5 | 7656 | struct bfd_link_info *link_info) |
a06ea964 NC |
7657 | { |
7658 | Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */ | |
7659 | ||
7660 | i_ehdrp = elf_elfheader (abfd); | |
a06ea964 | 7661 | i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION; |
1419bbe5 | 7662 | |
78245035 | 7663 | _bfd_elf_post_process_headers (abfd, link_info); |
a06ea964 NC |
7664 | } |
7665 | ||
7666 | static enum elf_reloc_type_class | |
cec5225b | 7667 | elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
7e612e98 AM |
7668 | const asection *rel_sec ATTRIBUTE_UNUSED, |
7669 | const Elf_Internal_Rela *rela) | |
a06ea964 | 7670 | { |
f2e6a843 SN |
7671 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); |
7672 | ||
7673 | if (htab->root.dynsym != NULL | |
7674 | && htab->root.dynsym->contents != NULL) | |
7675 | { | |
7676 | /* Check relocation against STT_GNU_IFUNC symbol if there are | |
7677 | dynamic symbols. */ | |
7678 | bfd *abfd = info->output_bfd; | |
7679 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7680 | unsigned long r_symndx = ELFNN_R_SYM (rela->r_info); | |
7681 | if (r_symndx != STN_UNDEF) | |
7682 | { | |
7683 | Elf_Internal_Sym sym; | |
7684 | if (!bed->s->swap_symbol_in (abfd, | |
7685 | (htab->root.dynsym->contents | |
7686 | + r_symndx * bed->s->sizeof_sym), | |
7687 | 0, &sym)) | |
7688 | { | |
7689 | /* xgettext:c-format */ | |
871b3ab2 | 7690 | _bfd_error_handler (_("%pB symbol number %lu references" |
f2e6a843 SN |
7691 | " nonexistent SHT_SYMTAB_SHNDX section"), |
7692 | abfd, r_symndx); | |
7693 | /* Ideally an error class should be returned here. */ | |
7694 | } | |
7695 | else if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC) | |
7696 | return reloc_class_ifunc; | |
7697 | } | |
7698 | } | |
7699 | ||
cec5225b | 7700 | switch ((int) ELFNN_R_TYPE (rela->r_info)) |
a06ea964 | 7701 | { |
f2e6a843 SN |
7702 | case AARCH64_R (IRELATIVE): |
7703 | return reloc_class_ifunc; | |
a6bb11b2 | 7704 | case AARCH64_R (RELATIVE): |
a06ea964 | 7705 | return reloc_class_relative; |
a6bb11b2 | 7706 | case AARCH64_R (JUMP_SLOT): |
a06ea964 | 7707 | return reloc_class_plt; |
a6bb11b2 | 7708 | case AARCH64_R (COPY): |
a06ea964 NC |
7709 | return reloc_class_copy; |
7710 | default: | |
7711 | return reloc_class_normal; | |
7712 | } | |
7713 | } | |
7714 | ||
a06ea964 NC |
7715 | /* Handle an AArch64 specific section when reading an object file. This is |
7716 | called when bfd_section_from_shdr finds a section with an unknown | |
7717 | type. */ | |
7718 | ||
7719 | static bfd_boolean | |
cec5225b | 7720 | elfNN_aarch64_section_from_shdr (bfd *abfd, |
a06ea964 NC |
7721 | Elf_Internal_Shdr *hdr, |
7722 | const char *name, int shindex) | |
7723 | { | |
7724 | /* There ought to be a place to keep ELF backend specific flags, but | |
7725 | at the moment there isn't one. We just keep track of the | |
7726 | sections by their name, instead. Fortunately, the ABI gives | |
7727 | names for all the AArch64 specific sections, so we will probably get | |
7728 | away with this. */ | |
7729 | switch (hdr->sh_type) | |
7730 | { | |
7731 | case SHT_AARCH64_ATTRIBUTES: | |
7732 | break; | |
7733 | ||
7734 | default: | |
7735 | return FALSE; | |
7736 | } | |
7737 | ||
7738 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
7739 | return FALSE; | |
7740 | ||
7741 | return TRUE; | |
7742 | } | |
7743 | ||
7744 | /* A structure used to record a list of sections, independently | |
7745 | of the next and prev fields in the asection structure. */ | |
7746 | typedef struct section_list | |
7747 | { | |
7748 | asection *sec; | |
7749 | struct section_list *next; | |
7750 | struct section_list *prev; | |
7751 | } | |
7752 | section_list; | |
7753 | ||
7754 | /* Unfortunately we need to keep a list of sections for which | |
7755 | an _aarch64_elf_section_data structure has been allocated. This | |
cec5225b | 7756 | is because it is possible for functions like elfNN_aarch64_write_section |
a06ea964 NC |
7757 | to be called on a section which has had an elf_data_structure |
7758 | allocated for it (and so the used_by_bfd field is valid) but | |
7759 | for which the AArch64 extended version of this structure - the | |
7760 | _aarch64_elf_section_data structure - has not been allocated. */ | |
7761 | static section_list *sections_with_aarch64_elf_section_data = NULL; | |
7762 | ||
7763 | static void | |
7764 | record_section_with_aarch64_elf_section_data (asection *sec) | |
7765 | { | |
7766 | struct section_list *entry; | |
7767 | ||
7768 | entry = bfd_malloc (sizeof (*entry)); | |
7769 | if (entry == NULL) | |
7770 | return; | |
7771 | entry->sec = sec; | |
7772 | entry->next = sections_with_aarch64_elf_section_data; | |
7773 | entry->prev = NULL; | |
7774 | if (entry->next != NULL) | |
7775 | entry->next->prev = entry; | |
7776 | sections_with_aarch64_elf_section_data = entry; | |
7777 | } | |
7778 | ||
7779 | static struct section_list * | |
7780 | find_aarch64_elf_section_entry (asection *sec) | |
7781 | { | |
7782 | struct section_list *entry; | |
7783 | static struct section_list *last_entry = NULL; | |
7784 | ||
7785 | /* This is a short cut for the typical case where the sections are added | |
7786 | to the sections_with_aarch64_elf_section_data list in forward order and | |
7787 | then looked up here in backwards order. This makes a real difference | |
7788 | to the ld-srec/sec64k.exp linker test. */ | |
7789 | entry = sections_with_aarch64_elf_section_data; | |
7790 | if (last_entry != NULL) | |
7791 | { | |
7792 | if (last_entry->sec == sec) | |
7793 | entry = last_entry; | |
7794 | else if (last_entry->next != NULL && last_entry->next->sec == sec) | |
7795 | entry = last_entry->next; | |
7796 | } | |
7797 | ||
7798 | for (; entry; entry = entry->next) | |
7799 | if (entry->sec == sec) | |
7800 | break; | |
7801 | ||
7802 | if (entry) | |
7803 | /* Record the entry prior to this one - it is the entry we are | |
7804 | most likely to want to locate next time. Also this way if we | |
7805 | have been called from | |
7806 | unrecord_section_with_aarch64_elf_section_data () we will not | |
7807 | be caching a pointer that is about to be freed. */ | |
7808 | last_entry = entry->prev; | |
7809 | ||
7810 | return entry; | |
7811 | } | |
7812 | ||
7813 | static void | |
7814 | unrecord_section_with_aarch64_elf_section_data (asection *sec) | |
7815 | { | |
7816 | struct section_list *entry; | |
7817 | ||
7818 | entry = find_aarch64_elf_section_entry (sec); | |
7819 | ||
7820 | if (entry) | |
7821 | { | |
7822 | if (entry->prev != NULL) | |
7823 | entry->prev->next = entry->next; | |
7824 | if (entry->next != NULL) | |
7825 | entry->next->prev = entry->prev; | |
7826 | if (entry == sections_with_aarch64_elf_section_data) | |
7827 | sections_with_aarch64_elf_section_data = entry->next; | |
7828 | free (entry); | |
7829 | } | |
7830 | } | |
7831 | ||
7832 | ||
7833 | typedef struct | |
7834 | { | |
7835 | void *finfo; | |
7836 | struct bfd_link_info *info; | |
7837 | asection *sec; | |
7838 | int sec_shndx; | |
7839 | int (*func) (void *, const char *, Elf_Internal_Sym *, | |
7840 | asection *, struct elf_link_hash_entry *); | |
7841 | } output_arch_syminfo; | |
7842 | ||
7843 | enum map_symbol_type | |
7844 | { | |
7845 | AARCH64_MAP_INSN, | |
7846 | AARCH64_MAP_DATA | |
7847 | }; | |
7848 | ||
7849 | ||
7850 | /* Output a single mapping symbol. */ | |
7851 | ||
7852 | static bfd_boolean | |
cec5225b | 7853 | elfNN_aarch64_output_map_sym (output_arch_syminfo *osi, |
a06ea964 NC |
7854 | enum map_symbol_type type, bfd_vma offset) |
7855 | { | |
7856 | static const char *names[2] = { "$x", "$d" }; | |
7857 | Elf_Internal_Sym sym; | |
7858 | ||
7859 | sym.st_value = (osi->sec->output_section->vma | |
7860 | + osi->sec->output_offset + offset); | |
7861 | sym.st_size = 0; | |
7862 | sym.st_other = 0; | |
7863 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
7864 | sym.st_shndx = osi->sec_shndx; | |
7865 | return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1; | |
7866 | } | |
7867 | ||
a06ea964 NC |
7868 | /* Output a single local symbol for a generated stub. */ |
7869 | ||
7870 | static bfd_boolean | |
cec5225b | 7871 | elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name, |
a06ea964 NC |
7872 | bfd_vma offset, bfd_vma size) |
7873 | { | |
7874 | Elf_Internal_Sym sym; | |
7875 | ||
7876 | sym.st_value = (osi->sec->output_section->vma | |
7877 | + osi->sec->output_offset + offset); | |
7878 | sym.st_size = size; | |
7879 | sym.st_other = 0; | |
7880 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
7881 | sym.st_shndx = osi->sec_shndx; | |
7882 | return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1; | |
7883 | } | |
7884 | ||
7885 | static bfd_boolean | |
7886 | aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) | |
7887 | { | |
cec5225b | 7888 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
7889 | asection *stub_sec; |
7890 | bfd_vma addr; | |
7891 | char *stub_name; | |
7892 | output_arch_syminfo *osi; | |
7893 | ||
7894 | /* Massage our args to the form they really have. */ | |
cec5225b | 7895 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
7896 | osi = (output_arch_syminfo *) in_arg; |
7897 | ||
7898 | stub_sec = stub_entry->stub_sec; | |
7899 | ||
7900 | /* Ensure this stub is attached to the current section being | |
7901 | processed. */ | |
7902 | if (stub_sec != osi->sec) | |
7903 | return TRUE; | |
7904 | ||
7905 | addr = (bfd_vma) stub_entry->stub_offset; | |
7906 | ||
7907 | stub_name = stub_entry->output_name; | |
7908 | ||
7909 | switch (stub_entry->stub_type) | |
7910 | { | |
7911 | case aarch64_stub_adrp_branch: | |
cec5225b | 7912 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, |
a06ea964 NC |
7913 | sizeof (aarch64_adrp_branch_stub))) |
7914 | return FALSE; | |
cec5225b | 7915 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 NC |
7916 | return FALSE; |
7917 | break; | |
7918 | case aarch64_stub_long_branch: | |
cec5225b | 7919 | if (!elfNN_aarch64_output_stub_sym |
a06ea964 NC |
7920 | (osi, stub_name, addr, sizeof (aarch64_long_branch_stub))) |
7921 | return FALSE; | |
cec5225b | 7922 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 | 7923 | return FALSE; |
cec5225b | 7924 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16)) |
a06ea964 NC |
7925 | return FALSE; |
7926 | break; | |
68fcca92 JW |
7927 | case aarch64_stub_erratum_835769_veneer: |
7928 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
7929 | sizeof (aarch64_erratum_835769_stub))) | |
7930 | return FALSE; | |
7931 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
7932 | return FALSE; | |
7933 | break; | |
4106101c MS |
7934 | case aarch64_stub_erratum_843419_veneer: |
7935 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
7936 | sizeof (aarch64_erratum_843419_stub))) | |
7937 | return FALSE; | |
7938 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
7939 | return FALSE; | |
7940 | break; | |
7941 | ||
a06ea964 | 7942 | default: |
8e2fe09f | 7943 | abort (); |
a06ea964 NC |
7944 | } |
7945 | ||
7946 | return TRUE; | |
7947 | } | |
7948 | ||
7949 | /* Output mapping symbols for linker generated sections. */ | |
7950 | ||
7951 | static bfd_boolean | |
cec5225b | 7952 | elfNN_aarch64_output_arch_local_syms (bfd *output_bfd, |
a06ea964 NC |
7953 | struct bfd_link_info *info, |
7954 | void *finfo, | |
7955 | int (*func) (void *, const char *, | |
7956 | Elf_Internal_Sym *, | |
7957 | asection *, | |
7958 | struct elf_link_hash_entry | |
7959 | *)) | |
7960 | { | |
7961 | output_arch_syminfo osi; | |
cec5225b | 7962 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 7963 | |
cec5225b | 7964 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7965 | |
7966 | osi.finfo = finfo; | |
7967 | osi.info = info; | |
7968 | osi.func = func; | |
7969 | ||
7970 | /* Long calls stubs. */ | |
7971 | if (htab->stub_bfd && htab->stub_bfd->sections) | |
7972 | { | |
7973 | asection *stub_sec; | |
7974 | ||
7975 | for (stub_sec = htab->stub_bfd->sections; | |
7976 | stub_sec != NULL; stub_sec = stub_sec->next) | |
7977 | { | |
7978 | /* Ignore non-stub sections. */ | |
7979 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
7980 | continue; | |
7981 | ||
7982 | osi.sec = stub_sec; | |
7983 | ||
7984 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
7985 | (output_bfd, osi.sec->output_section); | |
7986 | ||
61865519 MS |
7987 | /* The first instruction in a stub is always a branch. */ |
7988 | if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0)) | |
7989 | return FALSE; | |
7990 | ||
a06ea964 NC |
7991 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub, |
7992 | &osi); | |
7993 | } | |
7994 | } | |
7995 | ||
7996 | /* Finally, output mapping symbols for the PLT. */ | |
7997 | if (!htab->root.splt || htab->root.splt->size == 0) | |
7998 | return TRUE; | |
7999 | ||
a06ea964 NC |
8000 | osi.sec_shndx = _bfd_elf_section_from_bfd_section |
8001 | (output_bfd, htab->root.splt->output_section); | |
8002 | osi.sec = htab->root.splt; | |
8003 | ||
73524045 | 8004 | elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0); |
a06ea964 NC |
8005 | |
8006 | return TRUE; | |
8007 | ||
8008 | } | |
8009 | ||
8010 | /* Allocate target specific section data. */ | |
8011 | ||
8012 | static bfd_boolean | |
cec5225b | 8013 | elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec) |
a06ea964 NC |
8014 | { |
8015 | if (!sec->used_by_bfd) | |
8016 | { | |
8017 | _aarch64_elf_section_data *sdata; | |
8018 | bfd_size_type amt = sizeof (*sdata); | |
8019 | ||
8020 | sdata = bfd_zalloc (abfd, amt); | |
8021 | if (sdata == NULL) | |
8022 | return FALSE; | |
8023 | sec->used_by_bfd = sdata; | |
8024 | } | |
8025 | ||
8026 | record_section_with_aarch64_elf_section_data (sec); | |
8027 | ||
8028 | return _bfd_elf_new_section_hook (abfd, sec); | |
8029 | } | |
8030 | ||
8031 | ||
8032 | static void | |
8033 | unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
8034 | asection *sec, | |
8035 | void *ignore ATTRIBUTE_UNUSED) | |
8036 | { | |
8037 | unrecord_section_with_aarch64_elf_section_data (sec); | |
8038 | } | |
8039 | ||
8040 | static bfd_boolean | |
cec5225b | 8041 | elfNN_aarch64_close_and_cleanup (bfd *abfd) |
a06ea964 NC |
8042 | { |
8043 | if (abfd->sections) | |
8044 | bfd_map_over_sections (abfd, | |
8045 | unrecord_section_via_map_over_sections, NULL); | |
8046 | ||
8047 | return _bfd_elf_close_and_cleanup (abfd); | |
8048 | } | |
8049 | ||
8050 | static bfd_boolean | |
cec5225b | 8051 | elfNN_aarch64_bfd_free_cached_info (bfd *abfd) |
a06ea964 NC |
8052 | { |
8053 | if (abfd->sections) | |
8054 | bfd_map_over_sections (abfd, | |
8055 | unrecord_section_via_map_over_sections, NULL); | |
8056 | ||
8057 | return _bfd_free_cached_info (abfd); | |
8058 | } | |
8059 | ||
a06ea964 NC |
8060 | /* Create dynamic sections. This is different from the ARM backend in that |
8061 | the got, plt, gotplt and their relocation sections are all created in the | |
8062 | standard part of the bfd elf backend. */ | |
8063 | ||
8064 | static bfd_boolean | |
cec5225b | 8065 | elfNN_aarch64_create_dynamic_sections (bfd *dynobj, |
a06ea964 NC |
8066 | struct bfd_link_info *info) |
8067 | { | |
cc0efaa8 MS |
8068 | /* We need to create .got section. */ |
8069 | if (!aarch64_elf_create_got_section (dynobj, info)) | |
8070 | return FALSE; | |
a06ea964 | 8071 | |
9d19e4fd | 8072 | return _bfd_elf_create_dynamic_sections (dynobj, info); |
a06ea964 NC |
8073 | } |
8074 | ||
8075 | ||
8076 | /* Allocate space in .plt, .got and associated reloc sections for | |
8077 | dynamic relocs. */ | |
8078 | ||
8079 | static bfd_boolean | |
cec5225b | 8080 | elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
a06ea964 NC |
8081 | { |
8082 | struct bfd_link_info *info; | |
cec5225b YZ |
8083 | struct elf_aarch64_link_hash_table *htab; |
8084 | struct elf_aarch64_link_hash_entry *eh; | |
a06ea964 NC |
8085 | struct elf_dyn_relocs *p; |
8086 | ||
8087 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
8088 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
8089 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
8090 | ||
8091 | There is no need to process bfd_link_hash_indirect symbols here | |
8092 | because we will also be presented with the concrete instance of | |
cec5225b | 8093 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been |
a06ea964 | 8094 | called to copy all relevant data from the generic to the concrete |
2d0ca824 | 8095 | symbol instance. */ |
a06ea964 NC |
8096 | if (h->root.type == bfd_link_hash_indirect) |
8097 | return TRUE; | |
8098 | ||
8099 | if (h->root.type == bfd_link_hash_warning) | |
8100 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8101 | ||
8102 | info = (struct bfd_link_info *) inf; | |
cec5225b | 8103 | htab = elf_aarch64_hash_table (info); |
a06ea964 | 8104 | |
1419bbe5 WN |
8105 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
8106 | here if it is defined and referenced in a non-shared object. */ | |
8107 | if (h->type == STT_GNU_IFUNC | |
8108 | && h->def_regular) | |
8109 | return TRUE; | |
8110 | else if (htab->root.dynamic_sections_created && h->plt.refcount > 0) | |
a06ea964 NC |
8111 | { |
8112 | /* Make sure this symbol is output as a dynamic symbol. | |
07d6d2b8 | 8113 | Undefined weak syms won't yet be marked as dynamic. */ |
ff07562f JW |
8114 | if (h->dynindx == -1 && !h->forced_local |
8115 | && h->root.type == bfd_link_hash_undefweak) | |
a06ea964 NC |
8116 | { |
8117 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
8118 | return FALSE; | |
8119 | } | |
8120 | ||
0e1862bb | 8121 | if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
a06ea964 NC |
8122 | { |
8123 | asection *s = htab->root.splt; | |
8124 | ||
8125 | /* If this is the first .plt entry, make room for the special | |
8126 | first entry. */ | |
8127 | if (s->size == 0) | |
8128 | s->size += htab->plt_header_size; | |
8129 | ||
8130 | h->plt.offset = s->size; | |
8131 | ||
8132 | /* If this symbol is not defined in a regular file, and we are | |
8133 | not generating a shared library, then set the symbol to this | |
8134 | location in the .plt. This is required to make function | |
8135 | pointers compare as equal between the normal executable and | |
8136 | the shared library. */ | |
0e1862bb | 8137 | if (!bfd_link_pic (info) && !h->def_regular) |
a06ea964 NC |
8138 | { |
8139 | h->root.u.def.section = s; | |
8140 | h->root.u.def.value = h->plt.offset; | |
8141 | } | |
8142 | ||
8143 | /* Make room for this entry. For now we only create the | |
8144 | small model PLT entries. We later need to find a way | |
8145 | of relaxing into these from the large model PLT entries. */ | |
8146 | s->size += PLT_SMALL_ENTRY_SIZE; | |
8147 | ||
8148 | /* We also need to make an entry in the .got.plt section, which | |
8149 | will be placed in the .got section by the linker script. */ | |
8150 | htab->root.sgotplt->size += GOT_ENTRY_SIZE; | |
8151 | ||
8152 | /* We also need to make an entry in the .rela.plt section. */ | |
8153 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8154 | ||
8155 | /* We need to ensure that all GOT entries that serve the PLT | |
8156 | are consecutive with the special GOT slots [0] [1] and | |
8157 | [2]. Any addtional relocations, such as | |
8158 | R_AARCH64_TLSDESC, must be placed after the PLT related | |
8159 | entries. We abuse the reloc_count such that during | |
8160 | sizing we adjust reloc_count to indicate the number of | |
8161 | PLT related reserved entries. In subsequent phases when | |
8162 | filling in the contents of the reloc entries, PLT related | |
8163 | entries are placed by computing their PLT index (0 | |
8164 | .. reloc_count). While other none PLT relocs are placed | |
8165 | at the slot indicated by reloc_count and reloc_count is | |
8166 | updated. */ | |
8167 | ||
8168 | htab->root.srelplt->reloc_count++; | |
8169 | } | |
8170 | else | |
8171 | { | |
8172 | h->plt.offset = (bfd_vma) - 1; | |
8173 | h->needs_plt = 0; | |
8174 | } | |
8175 | } | |
8176 | else | |
8177 | { | |
8178 | h->plt.offset = (bfd_vma) - 1; | |
8179 | h->needs_plt = 0; | |
8180 | } | |
8181 | ||
cec5225b | 8182 | eh = (struct elf_aarch64_link_hash_entry *) h; |
a06ea964 NC |
8183 | eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; |
8184 | ||
8185 | if (h->got.refcount > 0) | |
8186 | { | |
8187 | bfd_boolean dyn; | |
cec5225b | 8188 | unsigned got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
8189 | |
8190 | h->got.offset = (bfd_vma) - 1; | |
8191 | ||
8192 | dyn = htab->root.dynamic_sections_created; | |
8193 | ||
8194 | /* Make sure this symbol is output as a dynamic symbol. | |
07d6d2b8 | 8195 | Undefined weak syms won't yet be marked as dynamic. */ |
ff07562f JW |
8196 | if (dyn && h->dynindx == -1 && !h->forced_local |
8197 | && h->root.type == bfd_link_hash_undefweak) | |
a06ea964 NC |
8198 | { |
8199 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
8200 | return FALSE; | |
8201 | } | |
8202 | ||
8203 | if (got_type == GOT_UNKNOWN) | |
8204 | { | |
8205 | } | |
8206 | else if (got_type == GOT_NORMAL) | |
8207 | { | |
8208 | h->got.offset = htab->root.sgot->size; | |
8209 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8210 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8211 | || h->root.type != bfd_link_hash_undefweak) | |
0e1862bb | 8212 | && (bfd_link_pic (info) |
a377ae2a SN |
8213 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) |
8214 | /* Undefined weak symbol in static PIE resolves to 0 without | |
8215 | any dynamic relocations. */ | |
8216 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
a06ea964 NC |
8217 | { |
8218 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
8219 | } | |
8220 | } | |
8221 | else | |
8222 | { | |
8223 | int indx; | |
8224 | if (got_type & GOT_TLSDESC_GD) | |
8225 | { | |
8226 | eh->tlsdesc_got_jump_table_offset = | |
8227 | (htab->root.sgotplt->size | |
8228 | - aarch64_compute_jump_table_size (htab)); | |
8229 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
8230 | h->got.offset = (bfd_vma) - 2; | |
8231 | } | |
8232 | ||
8233 | if (got_type & GOT_TLS_GD) | |
8234 | { | |
8235 | h->got.offset = htab->root.sgot->size; | |
8236 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
8237 | } | |
8238 | ||
8239 | if (got_type & GOT_TLS_IE) | |
8240 | { | |
8241 | h->got.offset = htab->root.sgot->size; | |
8242 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8243 | } | |
8244 | ||
8245 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
8246 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8247 | || h->root.type != bfd_link_hash_undefweak) | |
6dda7875 | 8248 | && (!bfd_link_executable (info) |
a06ea964 NC |
8249 | || indx != 0 |
8250 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
8251 | { | |
8252 | if (got_type & GOT_TLSDESC_GD) | |
8253 | { | |
8254 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8255 | /* Note reloc_count not incremented here! We have | |
8256 | already adjusted reloc_count for this relocation | |
8257 | type. */ | |
8258 | ||
8259 | /* TLSDESC PLT is now needed, but not yet determined. */ | |
8260 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
8261 | } | |
8262 | ||
8263 | if (got_type & GOT_TLS_GD) | |
8264 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
8265 | ||
8266 | if (got_type & GOT_TLS_IE) | |
8267 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
8268 | } | |
8269 | } | |
8270 | } | |
8271 | else | |
8272 | { | |
8273 | h->got.offset = (bfd_vma) - 1; | |
8274 | } | |
8275 | ||
8276 | if (eh->dyn_relocs == NULL) | |
8277 | return TRUE; | |
8278 | ||
8279 | /* In the shared -Bsymbolic case, discard space allocated for | |
8280 | dynamic pc-relative relocs against symbols which turn out to be | |
8281 | defined in regular objects. For the normal shared case, discard | |
8282 | space for pc-relative relocs that have become local due to symbol | |
8283 | visibility changes. */ | |
8284 | ||
0e1862bb | 8285 | if (bfd_link_pic (info)) |
a06ea964 NC |
8286 | { |
8287 | /* Relocs that use pc_count are those that appear on a call | |
07d6d2b8 AM |
8288 | insn, or certain REL relocs that can generated via assembly. |
8289 | We want calls to protected symbols to resolve directly to the | |
8290 | function rather than going via the plt. If people want | |
8291 | function pointer comparisons to work as expected then they | |
8292 | should avoid writing weird assembly. */ | |
a06ea964 NC |
8293 | if (SYMBOL_CALLS_LOCAL (info, h)) |
8294 | { | |
8295 | struct elf_dyn_relocs **pp; | |
8296 | ||
8297 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) | |
8298 | { | |
8299 | p->count -= p->pc_count; | |
8300 | p->pc_count = 0; | |
8301 | if (p->count == 0) | |
8302 | *pp = p->next; | |
8303 | else | |
8304 | pp = &p->next; | |
8305 | } | |
8306 | } | |
8307 | ||
8308 | /* Also discard relocs on undefined weak syms with non-default | |
07d6d2b8 | 8309 | visibility. */ |
a06ea964 NC |
8310 | if (eh->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak) |
8311 | { | |
ddb7fd0f L |
8312 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
8313 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
a06ea964 NC |
8314 | eh->dyn_relocs = NULL; |
8315 | ||
8316 | /* Make sure undefined weak symbols are output as a dynamic | |
8317 | symbol in PIEs. */ | |
8318 | else if (h->dynindx == -1 | |
8319 | && !h->forced_local | |
ff07562f | 8320 | && h->root.type == bfd_link_hash_undefweak |
a06ea964 NC |
8321 | && !bfd_elf_link_record_dynamic_symbol (info, h)) |
8322 | return FALSE; | |
8323 | } | |
8324 | ||
8325 | } | |
8326 | else if (ELIMINATE_COPY_RELOCS) | |
8327 | { | |
8328 | /* For the non-shared case, discard space for relocs against | |
07d6d2b8 AM |
8329 | symbols which turn out to need copy relocs or are not |
8330 | dynamic. */ | |
a06ea964 NC |
8331 | |
8332 | if (!h->non_got_ref | |
8333 | && ((h->def_dynamic | |
8334 | && !h->def_regular) | |
8335 | || (htab->root.dynamic_sections_created | |
8336 | && (h->root.type == bfd_link_hash_undefweak | |
8337 | || h->root.type == bfd_link_hash_undefined)))) | |
8338 | { | |
8339 | /* Make sure this symbol is output as a dynamic symbol. | |
8340 | Undefined weak syms won't yet be marked as dynamic. */ | |
8341 | if (h->dynindx == -1 | |
8342 | && !h->forced_local | |
ff07562f | 8343 | && h->root.type == bfd_link_hash_undefweak |
a06ea964 NC |
8344 | && !bfd_elf_link_record_dynamic_symbol (info, h)) |
8345 | return FALSE; | |
8346 | ||
8347 | /* If that succeeded, we know we'll be keeping all the | |
8348 | relocs. */ | |
8349 | if (h->dynindx != -1) | |
8350 | goto keep; | |
8351 | } | |
8352 | ||
8353 | eh->dyn_relocs = NULL; | |
8354 | ||
8355 | keep:; | |
8356 | } | |
8357 | ||
8358 | /* Finally, allocate space. */ | |
8359 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
8360 | { | |
8361 | asection *sreloc; | |
8362 | ||
8363 | sreloc = elf_section_data (p->sec)->sreloc; | |
8364 | ||
8365 | BFD_ASSERT (sreloc != NULL); | |
8366 | ||
8367 | sreloc->size += p->count * RELOC_SIZE (htab); | |
8368 | } | |
8369 | ||
8370 | return TRUE; | |
8371 | } | |
8372 | ||
1419bbe5 WN |
8373 | /* Allocate space in .plt, .got and associated reloc sections for |
8374 | ifunc dynamic relocs. */ | |
8375 | ||
8376 | static bfd_boolean | |
8377 | elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h, | |
8378 | void *inf) | |
8379 | { | |
8380 | struct bfd_link_info *info; | |
8381 | struct elf_aarch64_link_hash_table *htab; | |
8382 | struct elf_aarch64_link_hash_entry *eh; | |
8383 | ||
8384 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
8385 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
8386 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
8387 | ||
8388 | There is no need to process bfd_link_hash_indirect symbols here | |
8389 | because we will also be presented with the concrete instance of | |
8390 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been | |
8391 | called to copy all relevant data from the generic to the concrete | |
2d0ca824 | 8392 | symbol instance. */ |
1419bbe5 WN |
8393 | if (h->root.type == bfd_link_hash_indirect) |
8394 | return TRUE; | |
8395 | ||
8396 | if (h->root.type == bfd_link_hash_warning) | |
8397 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8398 | ||
8399 | info = (struct bfd_link_info *) inf; | |
8400 | htab = elf_aarch64_hash_table (info); | |
8401 | ||
8402 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
8403 | ||
8404 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it | |
8405 | here if it is defined and referenced in a non-shared object. */ | |
8406 | if (h->type == STT_GNU_IFUNC | |
8407 | && h->def_regular) | |
8408 | return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, | |
8409 | &eh->dyn_relocs, | |
2df3368d | 8410 | NULL, |
1419bbe5 WN |
8411 | htab->plt_entry_size, |
8412 | htab->plt_header_size, | |
233cc9c1 L |
8413 | GOT_ENTRY_SIZE, |
8414 | FALSE); | |
1419bbe5 WN |
8415 | return TRUE; |
8416 | } | |
8417 | ||
8418 | /* Allocate space in .plt, .got and associated reloc sections for | |
8419 | local dynamic relocs. */ | |
8420 | ||
8421 | static bfd_boolean | |
8422 | elfNN_aarch64_allocate_local_dynrelocs (void **slot, void *inf) | |
8423 | { | |
8424 | struct elf_link_hash_entry *h | |
8425 | = (struct elf_link_hash_entry *) *slot; | |
8426 | ||
8427 | if (h->type != STT_GNU_IFUNC | |
8428 | || !h->def_regular | |
8429 | || !h->ref_regular | |
8430 | || !h->forced_local | |
8431 | || h->root.type != bfd_link_hash_defined) | |
8432 | abort (); | |
8433 | ||
8434 | return elfNN_aarch64_allocate_dynrelocs (h, inf); | |
8435 | } | |
8436 | ||
8437 | /* Allocate space in .plt, .got and associated reloc sections for | |
8438 | local ifunc dynamic relocs. */ | |
8439 | ||
8440 | static bfd_boolean | |
8441 | elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf) | |
8442 | { | |
8443 | struct elf_link_hash_entry *h | |
8444 | = (struct elf_link_hash_entry *) *slot; | |
8445 | ||
8446 | if (h->type != STT_GNU_IFUNC | |
8447 | || !h->def_regular | |
8448 | || !h->ref_regular | |
8449 | || !h->forced_local | |
8450 | || h->root.type != bfd_link_hash_defined) | |
8451 | abort (); | |
8452 | ||
8453 | return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf); | |
8454 | } | |
a06ea964 | 8455 | |
63c1f59d AM |
8456 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to |
8457 | read-only sections. */ | |
c2170589 JW |
8458 | |
8459 | static bfd_boolean | |
63c1f59d | 8460 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) |
c2170589 | 8461 | { |
63c1f59d | 8462 | asection *sec; |
c2170589 | 8463 | |
63c1f59d AM |
8464 | if (h->root.type == bfd_link_hash_indirect) |
8465 | return TRUE; | |
c2170589 | 8466 | |
63c1f59d AM |
8467 | sec = readonly_dynrelocs (h); |
8468 | if (sec != NULL) | |
8469 | { | |
8470 | struct bfd_link_info *info = (struct bfd_link_info *) info_p; | |
c2170589 | 8471 | |
63c1f59d AM |
8472 | info->flags |= DF_TEXTREL; |
8473 | info->callbacks->minfo | |
c1c8c1ef | 8474 | (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), |
63c1f59d | 8475 | sec->owner, h->root.root.string, sec); |
c2170589 | 8476 | |
63c1f59d AM |
8477 | /* Not an error, just cut short the traversal. */ |
8478 | return FALSE; | |
c2170589 JW |
8479 | } |
8480 | return TRUE; | |
8481 | } | |
8482 | ||
a06ea964 NC |
8483 | /* This is the most important function of all . Innocuosly named |
8484 | though ! */ | |
2d0ca824 | 8485 | |
a06ea964 | 8486 | static bfd_boolean |
cec5225b | 8487 | elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
8488 | struct bfd_link_info *info) |
8489 | { | |
cec5225b | 8490 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
8491 | bfd *dynobj; |
8492 | asection *s; | |
8493 | bfd_boolean relocs; | |
8494 | bfd *ibfd; | |
8495 | ||
cec5225b | 8496 | htab = elf_aarch64_hash_table ((info)); |
a06ea964 NC |
8497 | dynobj = htab->root.dynobj; |
8498 | ||
8499 | BFD_ASSERT (dynobj != NULL); | |
8500 | ||
8501 | if (htab->root.dynamic_sections_created) | |
8502 | { | |
9b8b325a | 8503 | if (bfd_link_executable (info) && !info->nointerp) |
a06ea964 NC |
8504 | { |
8505 | s = bfd_get_linker_section (dynobj, ".interp"); | |
8506 | if (s == NULL) | |
8507 | abort (); | |
8508 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
8509 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
8510 | } | |
8511 | } | |
8512 | ||
8513 | /* Set up .got offsets for local syms, and space for local dynamic | |
8514 | relocs. */ | |
c72f2fb2 | 8515 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
a06ea964 NC |
8516 | { |
8517 | struct elf_aarch64_local_symbol *locals = NULL; | |
8518 | Elf_Internal_Shdr *symtab_hdr; | |
8519 | asection *srel; | |
8520 | unsigned int i; | |
8521 | ||
8522 | if (!is_aarch64_elf (ibfd)) | |
8523 | continue; | |
8524 | ||
8525 | for (s = ibfd->sections; s != NULL; s = s->next) | |
8526 | { | |
8527 | struct elf_dyn_relocs *p; | |
8528 | ||
8529 | for (p = (struct elf_dyn_relocs *) | |
8530 | (elf_section_data (s)->local_dynrel); p != NULL; p = p->next) | |
8531 | { | |
8532 | if (!bfd_is_abs_section (p->sec) | |
8533 | && bfd_is_abs_section (p->sec->output_section)) | |
8534 | { | |
8535 | /* Input section has been discarded, either because | |
8536 | it is a copy of a linkonce section or due to | |
8537 | linker script /DISCARD/, so we'll be discarding | |
8538 | the relocs too. */ | |
8539 | } | |
8540 | else if (p->count != 0) | |
8541 | { | |
8542 | srel = elf_section_data (p->sec)->sreloc; | |
8543 | srel->size += p->count * RELOC_SIZE (htab); | |
8544 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
8545 | info->flags |= DF_TEXTREL; | |
8546 | } | |
8547 | } | |
8548 | } | |
8549 | ||
cec5225b | 8550 | locals = elf_aarch64_locals (ibfd); |
a06ea964 NC |
8551 | if (!locals) |
8552 | continue; | |
8553 | ||
8554 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
8555 | srel = htab->root.srelgot; | |
8556 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
8557 | { | |
8558 | locals[i].got_offset = (bfd_vma) - 1; | |
8559 | locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
8560 | if (locals[i].got_refcount > 0) | |
8561 | { | |
8562 | unsigned got_type = locals[i].got_type; | |
8563 | if (got_type & GOT_TLSDESC_GD) | |
8564 | { | |
8565 | locals[i].tlsdesc_got_jump_table_offset = | |
8566 | (htab->root.sgotplt->size | |
8567 | - aarch64_compute_jump_table_size (htab)); | |
8568 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
8569 | locals[i].got_offset = (bfd_vma) - 2; | |
8570 | } | |
8571 | ||
8572 | if (got_type & GOT_TLS_GD) | |
8573 | { | |
8574 | locals[i].got_offset = htab->root.sgot->size; | |
8575 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
8576 | } | |
8577 | ||
b53b1bed JW |
8578 | if (got_type & GOT_TLS_IE |
8579 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
8580 | { |
8581 | locals[i].got_offset = htab->root.sgot->size; | |
8582 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8583 | } | |
8584 | ||
8585 | if (got_type == GOT_UNKNOWN) | |
8586 | { | |
8587 | } | |
8588 | ||
0e1862bb | 8589 | if (bfd_link_pic (info)) |
a06ea964 NC |
8590 | { |
8591 | if (got_type & GOT_TLSDESC_GD) | |
8592 | { | |
8593 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8594 | /* Note RELOC_COUNT not incremented here! */ | |
8595 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
8596 | } | |
8597 | ||
8598 | if (got_type & GOT_TLS_GD) | |
8599 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
8600 | ||
b53b1bed JW |
8601 | if (got_type & GOT_TLS_IE |
8602 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
8603 | htab->root.srelgot->size += RELOC_SIZE (htab); |
8604 | } | |
8605 | } | |
8606 | else | |
8607 | { | |
8608 | locals[i].got_refcount = (bfd_vma) - 1; | |
8609 | } | |
8610 | } | |
8611 | } | |
8612 | ||
8613 | ||
8614 | /* Allocate global sym .plt and .got entries, and space for global | |
8615 | sym dynamic relocs. */ | |
cec5225b | 8616 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs, |
a06ea964 NC |
8617 | info); |
8618 | ||
1419bbe5 WN |
8619 | /* Allocate global ifunc sym .plt and .got entries, and space for global |
8620 | ifunc sym dynamic relocs. */ | |
8621 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs, | |
8622 | info); | |
8623 | ||
8624 | /* Allocate .plt and .got entries, and space for local symbols. */ | |
8625 | htab_traverse (htab->loc_hash_table, | |
8626 | elfNN_aarch64_allocate_local_dynrelocs, | |
8627 | info); | |
8628 | ||
8629 | /* Allocate .plt and .got entries, and space for local ifunc symbols. */ | |
8630 | htab_traverse (htab->loc_hash_table, | |
8631 | elfNN_aarch64_allocate_local_ifunc_dynrelocs, | |
8632 | info); | |
a06ea964 NC |
8633 | |
8634 | /* For every jump slot reserved in the sgotplt, reloc_count is | |
8635 | incremented. However, when we reserve space for TLS descriptors, | |
8636 | it's not incremented, so in order to compute the space reserved | |
8637 | for them, it suffices to multiply the reloc count by the jump | |
8638 | slot size. */ | |
8639 | ||
8640 | if (htab->root.srelplt) | |
8847944f | 8641 | htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab); |
a06ea964 NC |
8642 | |
8643 | if (htab->tlsdesc_plt) | |
8644 | { | |
8645 | if (htab->root.splt->size == 0) | |
8646 | htab->root.splt->size += PLT_ENTRY_SIZE; | |
8647 | ||
8648 | htab->tlsdesc_plt = htab->root.splt->size; | |
8649 | htab->root.splt->size += PLT_TLSDESC_ENTRY_SIZE; | |
8650 | ||
8651 | /* If we're not using lazy TLS relocations, don't generate the | |
07d6d2b8 | 8652 | GOT entry required. */ |
a06ea964 NC |
8653 | if (!(info->flags & DF_BIND_NOW)) |
8654 | { | |
8655 | htab->dt_tlsdesc_got = htab->root.sgot->size; | |
8656 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8657 | } | |
8658 | } | |
8659 | ||
68fcca92 | 8660 | /* Init mapping symbols information to use later to distingush between |
4106101c MS |
8661 | code and data while scanning for errata. */ |
8662 | if (htab->fix_erratum_835769 || htab->fix_erratum_843419) | |
68fcca92 JW |
8663 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
8664 | { | |
8665 | if (!is_aarch64_elf (ibfd)) | |
8666 | continue; | |
8667 | bfd_elfNN_aarch64_init_maps (ibfd); | |
8668 | } | |
8669 | ||
a06ea964 NC |
8670 | /* We now have determined the sizes of the various dynamic sections. |
8671 | Allocate memory for them. */ | |
8672 | relocs = FALSE; | |
8673 | for (s = dynobj->sections; s != NULL; s = s->next) | |
8674 | { | |
8675 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
8676 | continue; | |
8677 | ||
8678 | if (s == htab->root.splt | |
8679 | || s == htab->root.sgot | |
8680 | || s == htab->root.sgotplt | |
8681 | || s == htab->root.iplt | |
9d19e4fd | 8682 | || s == htab->root.igotplt |
5474d94f AM |
8683 | || s == htab->root.sdynbss |
8684 | || s == htab->root.sdynrelro) | |
a06ea964 NC |
8685 | { |
8686 | /* Strip this section if we don't need it; see the | |
8687 | comment below. */ | |
8688 | } | |
8689 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) | |
8690 | { | |
8691 | if (s->size != 0 && s != htab->root.srelplt) | |
8692 | relocs = TRUE; | |
8693 | ||
8694 | /* We use the reloc_count field as a counter if we need | |
8695 | to copy relocs into the output file. */ | |
8696 | if (s != htab->root.srelplt) | |
8697 | s->reloc_count = 0; | |
8698 | } | |
8699 | else | |
8700 | { | |
8701 | /* It's not one of our sections, so don't allocate space. */ | |
8702 | continue; | |
8703 | } | |
8704 | ||
8705 | if (s->size == 0) | |
8706 | { | |
8707 | /* If we don't need this section, strip it from the | |
8708 | output file. This is mostly to handle .rela.bss and | |
8709 | .rela.plt. We must create both sections in | |
8710 | create_dynamic_sections, because they must be created | |
8711 | before the linker maps input sections to output | |
8712 | sections. The linker does that before | |
8713 | adjust_dynamic_symbol is called, and it is that | |
8714 | function which decides whether anything needs to go | |
8715 | into these sections. */ | |
a06ea964 NC |
8716 | s->flags |= SEC_EXCLUDE; |
8717 | continue; | |
8718 | } | |
8719 | ||
8720 | if ((s->flags & SEC_HAS_CONTENTS) == 0) | |
8721 | continue; | |
8722 | ||
8723 | /* Allocate memory for the section contents. We use bfd_zalloc | |
07d6d2b8 AM |
8724 | here in case unused entries are not reclaimed before the |
8725 | section's contents are written out. This should not happen, | |
8726 | but this way if it does, we get a R_AARCH64_NONE reloc instead | |
8727 | of garbage. */ | |
a06ea964 NC |
8728 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
8729 | if (s->contents == NULL) | |
8730 | return FALSE; | |
8731 | } | |
8732 | ||
8733 | if (htab->root.dynamic_sections_created) | |
8734 | { | |
8735 | /* Add some entries to the .dynamic section. We fill in the | |
07d6d2b8 AM |
8736 | values later, in elfNN_aarch64_finish_dynamic_sections, but we |
8737 | must add the entries now so that we get the correct size for | |
8738 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
8739 | dynamic linker and used by the debugger. */ | |
a06ea964 NC |
8740 | #define add_dynamic_entry(TAG, VAL) \ |
8741 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
8742 | ||
0e1862bb | 8743 | if (bfd_link_executable (info)) |
a06ea964 NC |
8744 | { |
8745 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
8746 | return FALSE; | |
8747 | } | |
8748 | ||
8749 | if (htab->root.splt->size != 0) | |
8750 | { | |
8751 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
8752 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
8753 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
8754 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
8755 | return FALSE; | |
8756 | ||
8757 | if (htab->tlsdesc_plt | |
8758 | && (!add_dynamic_entry (DT_TLSDESC_PLT, 0) | |
8759 | || !add_dynamic_entry (DT_TLSDESC_GOT, 0))) | |
8760 | return FALSE; | |
8761 | } | |
8762 | ||
8763 | if (relocs) | |
8764 | { | |
8765 | if (!add_dynamic_entry (DT_RELA, 0) | |
8766 | || !add_dynamic_entry (DT_RELASZ, 0) | |
8767 | || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) | |
8768 | return FALSE; | |
8769 | ||
8770 | /* If any dynamic relocs apply to a read-only section, | |
8771 | then we need a DT_TEXTREL entry. */ | |
c2170589 | 8772 | if ((info->flags & DF_TEXTREL) == 0) |
63c1f59d | 8773 | elf_link_hash_traverse (&htab->root, maybe_set_textrel, info); |
c2170589 | 8774 | |
a06ea964 NC |
8775 | if ((info->flags & DF_TEXTREL) != 0) |
8776 | { | |
8777 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
8778 | return FALSE; | |
8779 | } | |
8780 | } | |
8781 | } | |
8782 | #undef add_dynamic_entry | |
8783 | ||
8784 | return TRUE; | |
a06ea964 NC |
8785 | } |
8786 | ||
8787 | static inline void | |
caed7120 YZ |
8788 | elf_aarch64_update_plt_entry (bfd *output_bfd, |
8789 | bfd_reloc_code_real_type r_type, | |
8790 | bfd_byte *plt_entry, bfd_vma value) | |
a06ea964 | 8791 | { |
caed7120 YZ |
8792 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type); |
8793 | ||
1d75a8e2 NC |
8794 | /* FIXME: We should check the return value from this function call. */ |
8795 | (void) _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value); | |
a06ea964 NC |
8796 | } |
8797 | ||
8798 | static void | |
cec5225b YZ |
8799 | elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h, |
8800 | struct elf_aarch64_link_hash_table | |
1419bbe5 WN |
8801 | *htab, bfd *output_bfd, |
8802 | struct bfd_link_info *info) | |
a06ea964 NC |
8803 | { |
8804 | bfd_byte *plt_entry; | |
8805 | bfd_vma plt_index; | |
8806 | bfd_vma got_offset; | |
8807 | bfd_vma gotplt_entry_address; | |
8808 | bfd_vma plt_entry_address; | |
8809 | Elf_Internal_Rela rela; | |
8810 | bfd_byte *loc; | |
1419bbe5 WN |
8811 | asection *plt, *gotplt, *relplt; |
8812 | ||
8813 | /* When building a static executable, use .iplt, .igot.plt and | |
8814 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
8815 | if (htab->root.splt != NULL) | |
8816 | { | |
8817 | plt = htab->root.splt; | |
8818 | gotplt = htab->root.sgotplt; | |
8819 | relplt = htab->root.srelplt; | |
8820 | } | |
8821 | else | |
8822 | { | |
8823 | plt = htab->root.iplt; | |
8824 | gotplt = htab->root.igotplt; | |
8825 | relplt = htab->root.irelplt; | |
8826 | } | |
8827 | ||
8828 | /* Get the index in the procedure linkage table which | |
8829 | corresponds to this symbol. This is the index of this symbol | |
8830 | in all the symbols for which we are making plt entries. The | |
8831 | first entry in the procedure linkage table is reserved. | |
a06ea964 | 8832 | |
1419bbe5 WN |
8833 | Get the offset into the .got table of the entry that |
8834 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE | |
8835 | bytes. The first three are reserved for the dynamic linker. | |
692e2b8b | 8836 | |
1419bbe5 WN |
8837 | For static executables, we don't reserve anything. */ |
8838 | ||
8839 | if (plt == htab->root.splt) | |
8840 | { | |
8841 | plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size; | |
8842 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
8843 | } | |
8844 | else | |
8845 | { | |
8846 | plt_index = h->plt.offset / htab->plt_entry_size; | |
8847 | got_offset = plt_index * GOT_ENTRY_SIZE; | |
8848 | } | |
8849 | ||
8850 | plt_entry = plt->contents + h->plt.offset; | |
8851 | plt_entry_address = plt->output_section->vma | |
f44a1f8e | 8852 | + plt->output_offset + h->plt.offset; |
1419bbe5 WN |
8853 | gotplt_entry_address = gotplt->output_section->vma + |
8854 | gotplt->output_offset + got_offset; | |
a06ea964 NC |
8855 | |
8856 | /* Copy in the boiler-plate for the PLTn entry. */ | |
cec5225b | 8857 | memcpy (plt_entry, elfNN_aarch64_small_plt_entry, PLT_SMALL_ENTRY_SIZE); |
a06ea964 NC |
8858 | |
8859 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
8860 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 YZ |
8861 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
8862 | plt_entry, | |
8863 | PG (gotplt_entry_address) - | |
8864 | PG (plt_entry_address)); | |
a06ea964 NC |
8865 | |
8866 | /* Fill in the lo12 bits for the load from the pltgot. */ | |
caed7120 YZ |
8867 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
8868 | plt_entry + 4, | |
8869 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 | 8870 | |
9aff4b7a | 8871 | /* Fill in the lo12 bits for the add from the pltgot entry. */ |
caed7120 YZ |
8872 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
8873 | plt_entry + 8, | |
8874 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 NC |
8875 | |
8876 | /* All the GOTPLT Entries are essentially initialized to PLT0. */ | |
cec5225b | 8877 | bfd_put_NN (output_bfd, |
1419bbe5 WN |
8878 | plt->output_section->vma + plt->output_offset, |
8879 | gotplt->contents + got_offset); | |
a06ea964 | 8880 | |
a06ea964 | 8881 | rela.r_offset = gotplt_entry_address; |
1419bbe5 WN |
8882 | |
8883 | if (h->dynindx == -1 | |
0e1862bb | 8884 | || ((bfd_link_executable (info) |
1419bbe5 WN |
8885 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
8886 | && h->def_regular | |
8887 | && h->type == STT_GNU_IFUNC)) | |
8888 | { | |
8889 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
8890 | R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */ | |
8891 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
8892 | rela.r_addend = (h->root.u.def.value | |
8893 | + h->root.u.def.section->output_section->vma | |
8894 | + h->root.u.def.section->output_offset); | |
8895 | } | |
8896 | else | |
8897 | { | |
8898 | /* Fill in the entry in the .rela.plt section. */ | |
8899 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT)); | |
8900 | rela.r_addend = 0; | |
8901 | } | |
a06ea964 NC |
8902 | |
8903 | /* Compute the relocation entry to used based on PLT index and do | |
8904 | not adjust reloc_count. The reloc_count has already been adjusted | |
8905 | to account for this entry. */ | |
1419bbe5 | 8906 | loc = relplt->contents + plt_index * RELOC_SIZE (htab); |
cec5225b | 8907 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
8908 | } |
8909 | ||
8910 | /* Size sections even though they're not dynamic. We use it to setup | |
8911 | _TLS_MODULE_BASE_, if needed. */ | |
8912 | ||
8913 | static bfd_boolean | |
cec5225b | 8914 | elfNN_aarch64_always_size_sections (bfd *output_bfd, |
a06ea964 NC |
8915 | struct bfd_link_info *info) |
8916 | { | |
8917 | asection *tls_sec; | |
8918 | ||
0e1862bb | 8919 | if (bfd_link_relocatable (info)) |
a06ea964 NC |
8920 | return TRUE; |
8921 | ||
8922 | tls_sec = elf_hash_table (info)->tls_sec; | |
8923 | ||
8924 | if (tls_sec) | |
8925 | { | |
8926 | struct elf_link_hash_entry *tlsbase; | |
8927 | ||
8928 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
8929 | "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE); | |
8930 | ||
8931 | if (tlsbase) | |
8932 | { | |
8933 | struct bfd_link_hash_entry *h = NULL; | |
8934 | const struct elf_backend_data *bed = | |
8935 | get_elf_backend_data (output_bfd); | |
8936 | ||
8937 | if (!(_bfd_generic_link_add_one_symbol | |
8938 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
8939 | tls_sec, 0, NULL, FALSE, bed->collect, &h))) | |
8940 | return FALSE; | |
8941 | ||
8942 | tlsbase->type = STT_TLS; | |
8943 | tlsbase = (struct elf_link_hash_entry *) h; | |
8944 | tlsbase->def_regular = 1; | |
8945 | tlsbase->other = STV_HIDDEN; | |
8946 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
8947 | } | |
8948 | } | |
8949 | ||
8950 | return TRUE; | |
8951 | } | |
8952 | ||
8953 | /* Finish up dynamic symbol handling. We set the contents of various | |
8954 | dynamic sections here. */ | |
2d0ca824 | 8955 | |
a06ea964 | 8956 | static bfd_boolean |
cec5225b | 8957 | elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd, |
a06ea964 NC |
8958 | struct bfd_link_info *info, |
8959 | struct elf_link_hash_entry *h, | |
8960 | Elf_Internal_Sym *sym) | |
8961 | { | |
cec5225b YZ |
8962 | struct elf_aarch64_link_hash_table *htab; |
8963 | htab = elf_aarch64_hash_table (info); | |
a06ea964 NC |
8964 | |
8965 | if (h->plt.offset != (bfd_vma) - 1) | |
8966 | { | |
1419bbe5 WN |
8967 | asection *plt, *gotplt, *relplt; |
8968 | ||
a06ea964 | 8969 | /* This symbol has an entry in the procedure linkage table. Set |
07d6d2b8 | 8970 | it up. */ |
a06ea964 | 8971 | |
1419bbe5 WN |
8972 | /* When building a static executable, use .iplt, .igot.plt and |
8973 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
8974 | if (htab->root.splt != NULL) | |
8975 | { | |
8976 | plt = htab->root.splt; | |
8977 | gotplt = htab->root.sgotplt; | |
8978 | relplt = htab->root.srelplt; | |
8979 | } | |
8980 | else | |
8981 | { | |
8982 | plt = htab->root.iplt; | |
8983 | gotplt = htab->root.igotplt; | |
8984 | relplt = htab->root.irelplt; | |
8985 | } | |
8986 | ||
8987 | /* This symbol has an entry in the procedure linkage table. Set | |
8988 | it up. */ | |
8989 | if ((h->dynindx == -1 | |
0e1862bb | 8990 | && !((h->forced_local || bfd_link_executable (info)) |
1419bbe5 WN |
8991 | && h->def_regular |
8992 | && h->type == STT_GNU_IFUNC)) | |
8993 | || plt == NULL | |
8994 | || gotplt == NULL | |
8995 | || relplt == NULL) | |
f955cccf | 8996 | return FALSE; |
a06ea964 | 8997 | |
1419bbe5 | 8998 | elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info); |
a06ea964 NC |
8999 | if (!h->def_regular) |
9000 | { | |
9001 | /* Mark the symbol as undefined, rather than as defined in | |
46b87d49 | 9002 | the .plt section. */ |
a06ea964 | 9003 | sym->st_shndx = SHN_UNDEF; |
46b87d49 WN |
9004 | /* If the symbol is weak we need to clear the value. |
9005 | Otherwise, the PLT entry would provide a definition for | |
9006 | the symbol even if the symbol wasn't defined anywhere, | |
9007 | and so the symbol would never be NULL. Leave the value if | |
9008 | there were any relocations where pointer equality matters | |
9009 | (this is a clue for the dynamic linker, to make function | |
9010 | pointer comparisons work between an application and shared | |
9011 | library). */ | |
9012 | if (!h->ref_regular_nonweak || !h->pointer_equality_needed) | |
9013 | sym->st_value = 0; | |
a06ea964 NC |
9014 | } |
9015 | } | |
9016 | ||
9017 | if (h->got.offset != (bfd_vma) - 1 | |
a377ae2a SN |
9018 | && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL |
9019 | /* Undefined weak symbol in static PIE resolves to 0 without | |
9020 | any dynamic relocations. */ | |
9021 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
a06ea964 NC |
9022 | { |
9023 | Elf_Internal_Rela rela; | |
9024 | bfd_byte *loc; | |
9025 | ||
9026 | /* This symbol has an entry in the global offset table. Set it | |
07d6d2b8 | 9027 | up. */ |
a06ea964 NC |
9028 | if (htab->root.sgot == NULL || htab->root.srelgot == NULL) |
9029 | abort (); | |
9030 | ||
9031 | rela.r_offset = (htab->root.sgot->output_section->vma | |
9032 | + htab->root.sgot->output_offset | |
9033 | + (h->got.offset & ~(bfd_vma) 1)); | |
9034 | ||
49206388 WN |
9035 | if (h->def_regular |
9036 | && h->type == STT_GNU_IFUNC) | |
9037 | { | |
0e1862bb | 9038 | if (bfd_link_pic (info)) |
49206388 WN |
9039 | { |
9040 | /* Generate R_AARCH64_GLOB_DAT. */ | |
9041 | goto do_glob_dat; | |
9042 | } | |
9043 | else | |
9044 | { | |
9045 | asection *plt; | |
9046 | ||
9047 | if (!h->pointer_equality_needed) | |
9048 | abort (); | |
9049 | ||
9050 | /* For non-shared object, we can't use .got.plt, which | |
9051 | contains the real function address if we need pointer | |
9052 | equality. We load the GOT entry with the PLT entry. */ | |
9053 | plt = htab->root.splt ? htab->root.splt : htab->root.iplt; | |
9054 | bfd_put_NN (output_bfd, (plt->output_section->vma | |
9055 | + plt->output_offset | |
9056 | + h->plt.offset), | |
9057 | htab->root.sgot->contents | |
9058 | + (h->got.offset & ~(bfd_vma) 1)); | |
9059 | return TRUE; | |
9060 | } | |
9061 | } | |
0e1862bb | 9062 | else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h)) |
a06ea964 | 9063 | { |
0ee3a6db | 9064 | if (!(h->def_regular || ELF_COMMON_DEF_P (h))) |
a06ea964 NC |
9065 | return FALSE; |
9066 | ||
9067 | BFD_ASSERT ((h->got.offset & 1) != 0); | |
a6bb11b2 | 9068 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); |
a06ea964 NC |
9069 | rela.r_addend = (h->root.u.def.value |
9070 | + h->root.u.def.section->output_section->vma | |
9071 | + h->root.u.def.section->output_offset); | |
9072 | } | |
9073 | else | |
9074 | { | |
49206388 | 9075 | do_glob_dat: |
a06ea964 | 9076 | BFD_ASSERT ((h->got.offset & 1) == 0); |
cec5225b | 9077 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 | 9078 | htab->root.sgot->contents + h->got.offset); |
a6bb11b2 | 9079 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT)); |
a06ea964 NC |
9080 | rela.r_addend = 0; |
9081 | } | |
9082 | ||
9083 | loc = htab->root.srelgot->contents; | |
9084 | loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 9085 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
9086 | } |
9087 | ||
9088 | if (h->needs_copy) | |
9089 | { | |
9090 | Elf_Internal_Rela rela; | |
5474d94f | 9091 | asection *s; |
a06ea964 NC |
9092 | bfd_byte *loc; |
9093 | ||
9094 | /* This symbol needs a copy reloc. Set it up. */ | |
a06ea964 NC |
9095 | if (h->dynindx == -1 |
9096 | || (h->root.type != bfd_link_hash_defined | |
9097 | && h->root.type != bfd_link_hash_defweak) | |
9d19e4fd | 9098 | || htab->root.srelbss == NULL) |
a06ea964 NC |
9099 | abort (); |
9100 | ||
9101 | rela.r_offset = (h->root.u.def.value | |
9102 | + h->root.u.def.section->output_section->vma | |
9103 | + h->root.u.def.section->output_offset); | |
a6bb11b2 | 9104 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY)); |
a06ea964 | 9105 | rela.r_addend = 0; |
afbf7e8e | 9106 | if (h->root.u.def.section == htab->root.sdynrelro) |
5474d94f AM |
9107 | s = htab->root.sreldynrelro; |
9108 | else | |
9109 | s = htab->root.srelbss; | |
9110 | loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 9111 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
9112 | } |
9113 | ||
9114 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may | |
9115 | be NULL for local symbols. */ | |
9116 | if (sym != NULL | |
9637f6ef | 9117 | && (h == elf_hash_table (info)->hdynamic |
a06ea964 NC |
9118 | || h == elf_hash_table (info)->hgot)) |
9119 | sym->st_shndx = SHN_ABS; | |
9120 | ||
9121 | return TRUE; | |
9122 | } | |
9123 | ||
1419bbe5 WN |
9124 | /* Finish up local dynamic symbol handling. We set the contents of |
9125 | various dynamic sections here. */ | |
9126 | ||
9127 | static bfd_boolean | |
9128 | elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf) | |
9129 | { | |
9130 | struct elf_link_hash_entry *h | |
9131 | = (struct elf_link_hash_entry *) *slot; | |
9132 | struct bfd_link_info *info | |
9133 | = (struct bfd_link_info *) inf; | |
9134 | ||
9135 | return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd, | |
9136 | info, h, NULL); | |
9137 | } | |
9138 | ||
a06ea964 | 9139 | static void |
cec5225b YZ |
9140 | elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED, |
9141 | struct elf_aarch64_link_hash_table | |
a06ea964 NC |
9142 | *htab) |
9143 | { | |
9144 | /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between | |
9145 | small and large plts and at the minute just generates | |
9146 | the small PLT. */ | |
9147 | ||
cec5225b | 9148 | /* PLT0 of the small PLT looks like this in ELF64 - |
a06ea964 NC |
9149 | stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack. |
9150 | adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT | |
9151 | ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the | |
9152 | // symbol resolver | |
9153 | add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the | |
9154 | // GOTPLT entry for this. | |
9155 | br x17 | |
cec5225b | 9156 | PLT0 will be slightly different in ELF32 due to different got entry |
2d0ca824 | 9157 | size. */ |
caed7120 | 9158 | bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */ |
a06ea964 NC |
9159 | bfd_vma plt_base; |
9160 | ||
9161 | ||
cec5225b | 9162 | memcpy (htab->root.splt->contents, elfNN_aarch64_small_plt0_entry, |
a06ea964 NC |
9163 | PLT_ENTRY_SIZE); |
9164 | elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize = | |
9165 | PLT_ENTRY_SIZE; | |
9166 | ||
caed7120 YZ |
9167 | plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma |
9168 | + htab->root.sgotplt->output_offset | |
9169 | + GOT_ENTRY_SIZE * 2); | |
a06ea964 NC |
9170 | |
9171 | plt_base = htab->root.splt->output_section->vma + | |
f44a1f8e | 9172 | htab->root.splt->output_offset; |
a06ea964 NC |
9173 | |
9174 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
9175 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 YZ |
9176 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
9177 | htab->root.splt->contents + 4, | |
9178 | PG (plt_got_2nd_ent) - PG (plt_base + 4)); | |
a06ea964 | 9179 | |
caed7120 YZ |
9180 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
9181 | htab->root.splt->contents + 8, | |
9182 | PG_OFFSET (plt_got_2nd_ent)); | |
a06ea964 | 9183 | |
caed7120 YZ |
9184 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
9185 | htab->root.splt->contents + 12, | |
9186 | PG_OFFSET (plt_got_2nd_ent)); | |
a06ea964 NC |
9187 | } |
9188 | ||
9189 | static bfd_boolean | |
cec5225b | 9190 | elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd, |
a06ea964 NC |
9191 | struct bfd_link_info *info) |
9192 | { | |
cec5225b | 9193 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
9194 | bfd *dynobj; |
9195 | asection *sdyn; | |
9196 | ||
cec5225b | 9197 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
9198 | dynobj = htab->root.dynobj; |
9199 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); | |
9200 | ||
9201 | if (htab->root.dynamic_sections_created) | |
9202 | { | |
cec5225b | 9203 | ElfNN_External_Dyn *dyncon, *dynconend; |
a06ea964 NC |
9204 | |
9205 | if (sdyn == NULL || htab->root.sgot == NULL) | |
9206 | abort (); | |
9207 | ||
cec5225b YZ |
9208 | dyncon = (ElfNN_External_Dyn *) sdyn->contents; |
9209 | dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size); | |
a06ea964 NC |
9210 | for (; dyncon < dynconend; dyncon++) |
9211 | { | |
9212 | Elf_Internal_Dyn dyn; | |
9213 | asection *s; | |
9214 | ||
cec5225b | 9215 | bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn); |
a06ea964 NC |
9216 | |
9217 | switch (dyn.d_tag) | |
9218 | { | |
9219 | default: | |
9220 | continue; | |
9221 | ||
9222 | case DT_PLTGOT: | |
9223 | s = htab->root.sgotplt; | |
9224 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
9225 | break; | |
9226 | ||
9227 | case DT_JMPREL: | |
4ade44b7 AM |
9228 | s = htab->root.srelplt; |
9229 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
a06ea964 NC |
9230 | break; |
9231 | ||
9232 | case DT_PLTRELSZ: | |
c955de36 | 9233 | s = htab->root.srelplt; |
a06ea964 NC |
9234 | dyn.d_un.d_val = s->size; |
9235 | break; | |
9236 | ||
a06ea964 NC |
9237 | case DT_TLSDESC_PLT: |
9238 | s = htab->root.splt; | |
9239 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
9240 | + htab->tlsdesc_plt; | |
9241 | break; | |
9242 | ||
9243 | case DT_TLSDESC_GOT: | |
9244 | s = htab->root.sgot; | |
9245 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
9246 | + htab->dt_tlsdesc_got; | |
9247 | break; | |
9248 | } | |
9249 | ||
cec5225b | 9250 | bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon); |
a06ea964 NC |
9251 | } |
9252 | ||
9253 | } | |
9254 | ||
9255 | /* Fill in the special first entry in the procedure linkage table. */ | |
9256 | if (htab->root.splt && htab->root.splt->size > 0) | |
9257 | { | |
cec5225b | 9258 | elfNN_aarch64_init_small_plt0_entry (output_bfd, htab); |
a06ea964 NC |
9259 | |
9260 | elf_section_data (htab->root.splt->output_section)-> | |
9261 | this_hdr.sh_entsize = htab->plt_entry_size; | |
9262 | ||
9263 | ||
9264 | if (htab->tlsdesc_plt) | |
9265 | { | |
cec5225b | 9266 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
9267 | htab->root.sgot->contents + htab->dt_tlsdesc_got); |
9268 | ||
9269 | memcpy (htab->root.splt->contents + htab->tlsdesc_plt, | |
cec5225b YZ |
9270 | elfNN_aarch64_tlsdesc_small_plt_entry, |
9271 | sizeof (elfNN_aarch64_tlsdesc_small_plt_entry)); | |
a06ea964 NC |
9272 | |
9273 | { | |
9274 | bfd_vma adrp1_addr = | |
9275 | htab->root.splt->output_section->vma | |
9276 | + htab->root.splt->output_offset + htab->tlsdesc_plt + 4; | |
9277 | ||
caed7120 | 9278 | bfd_vma adrp2_addr = adrp1_addr + 4; |
a06ea964 NC |
9279 | |
9280 | bfd_vma got_addr = | |
9281 | htab->root.sgot->output_section->vma | |
9282 | + htab->root.sgot->output_offset; | |
9283 | ||
9284 | bfd_vma pltgot_addr = | |
9285 | htab->root.sgotplt->output_section->vma | |
9286 | + htab->root.sgotplt->output_offset; | |
9287 | ||
9288 | bfd_vma dt_tlsdesc_got = got_addr + htab->dt_tlsdesc_got; | |
caed7120 YZ |
9289 | |
9290 | bfd_byte *plt_entry = | |
9291 | htab->root.splt->contents + htab->tlsdesc_plt; | |
a06ea964 NC |
9292 | |
9293 | /* adrp x2, DT_TLSDESC_GOT */ | |
caed7120 YZ |
9294 | elf_aarch64_update_plt_entry (output_bfd, |
9295 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
9296 | plt_entry + 4, | |
9297 | (PG (dt_tlsdesc_got) | |
9298 | - PG (adrp1_addr))); | |
a06ea964 NC |
9299 | |
9300 | /* adrp x3, 0 */ | |
caed7120 YZ |
9301 | elf_aarch64_update_plt_entry (output_bfd, |
9302 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
9303 | plt_entry + 8, | |
9304 | (PG (pltgot_addr) | |
9305 | - PG (adrp2_addr))); | |
a06ea964 NC |
9306 | |
9307 | /* ldr x2, [x2, #0] */ | |
caed7120 YZ |
9308 | elf_aarch64_update_plt_entry (output_bfd, |
9309 | BFD_RELOC_AARCH64_LDSTNN_LO12, | |
9310 | plt_entry + 12, | |
9311 | PG_OFFSET (dt_tlsdesc_got)); | |
a06ea964 NC |
9312 | |
9313 | /* add x3, x3, 0 */ | |
caed7120 YZ |
9314 | elf_aarch64_update_plt_entry (output_bfd, |
9315 | BFD_RELOC_AARCH64_ADD_LO12, | |
9316 | plt_entry + 16, | |
9317 | PG_OFFSET (pltgot_addr)); | |
a06ea964 NC |
9318 | } |
9319 | } | |
9320 | } | |
9321 | ||
9322 | if (htab->root.sgotplt) | |
9323 | { | |
9324 | if (bfd_is_abs_section (htab->root.sgotplt->output_section)) | |
9325 | { | |
4eca0228 | 9326 | _bfd_error_handler |
871b3ab2 | 9327 | (_("discarded output section: `%pA'"), htab->root.sgotplt); |
a06ea964 NC |
9328 | return FALSE; |
9329 | } | |
9330 | ||
9331 | /* Fill in the first three entries in the global offset table. */ | |
9332 | if (htab->root.sgotplt->size > 0) | |
9333 | { | |
8db339a6 MS |
9334 | bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents); |
9335 | ||
a06ea964 | 9336 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ |
cec5225b | 9337 | bfd_put_NN (output_bfd, |
a06ea964 NC |
9338 | (bfd_vma) 0, |
9339 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE); | |
cec5225b | 9340 | bfd_put_NN (output_bfd, |
a06ea964 NC |
9341 | (bfd_vma) 0, |
9342 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2); | |
9343 | } | |
9344 | ||
8db339a6 MS |
9345 | if (htab->root.sgot) |
9346 | { | |
9347 | if (htab->root.sgot->size > 0) | |
9348 | { | |
9349 | bfd_vma addr = | |
9350 | sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0; | |
9351 | bfd_put_NN (output_bfd, addr, htab->root.sgot->contents); | |
9352 | } | |
9353 | } | |
9354 | ||
a06ea964 NC |
9355 | elf_section_data (htab->root.sgotplt->output_section)-> |
9356 | this_hdr.sh_entsize = GOT_ENTRY_SIZE; | |
9357 | } | |
9358 | ||
9359 | if (htab->root.sgot && htab->root.sgot->size > 0) | |
9360 | elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize | |
9361 | = GOT_ENTRY_SIZE; | |
9362 | ||
1419bbe5 WN |
9363 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
9364 | htab_traverse (htab->loc_hash_table, | |
9365 | elfNN_aarch64_finish_local_dynamic_symbol, | |
9366 | info); | |
9367 | ||
a06ea964 NC |
9368 | return TRUE; |
9369 | } | |
9370 | ||
9371 | /* Return address for Ith PLT stub in section PLT, for relocation REL | |
9372 | or (bfd_vma) -1 if it should not be included. */ | |
9373 | ||
9374 | static bfd_vma | |
cec5225b | 9375 | elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt, |
a06ea964 NC |
9376 | const arelent *rel ATTRIBUTE_UNUSED) |
9377 | { | |
9378 | return plt->vma + PLT_ENTRY_SIZE + i * PLT_SMALL_ENTRY_SIZE; | |
9379 | } | |
9380 | ||
d691934d NC |
9381 | /* Returns TRUE if NAME is an AArch64 mapping symbol. |
9382 | The ARM ELF standard defines $x (for A64 code) and $d (for data). | |
9383 | It also allows a period initiated suffix to be added to the symbol, ie: | |
9384 | "$[adtx]\.[:sym_char]+". */ | |
9385 | ||
9386 | static bfd_boolean | |
9387 | is_aarch64_mapping_symbol (const char * name) | |
9388 | { | |
9389 | return name != NULL /* Paranoia. */ | |
9390 | && name[0] == '$' /* Note: if objcopy --prefix-symbols has been used then | |
9391 | the mapping symbols could have acquired a prefix. | |
9392 | We do not support this here, since such symbols no | |
9393 | longer conform to the ARM ELF ABI. */ | |
9394 | && (name[1] == 'd' || name[1] == 'x') | |
9395 | && (name[2] == 0 || name[2] == '.'); | |
9396 | /* FIXME: Strictly speaking the symbol is only a valid mapping symbol if | |
9397 | any characters that follow the period are legal characters for the body | |
9398 | of a symbol's name. For now we just assume that this is the case. */ | |
9399 | } | |
9400 | ||
9401 | /* Make sure that mapping symbols in object files are not removed via the | |
9402 | "strip --strip-unneeded" tool. These symbols might needed in order to | |
9403 | correctly generate linked files. Once an object file has been linked, | |
9404 | it should be safe to remove them. */ | |
9405 | ||
9406 | static void | |
9407 | elfNN_aarch64_backend_symbol_processing (bfd *abfd, asymbol *sym) | |
9408 | { | |
9409 | if (((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
9410 | && sym->section != bfd_abs_section_ptr | |
9411 | && is_aarch64_mapping_symbol (sym->name)) | |
9412 | sym->flags |= BSF_KEEP; | |
9413 | } | |
9414 | ||
a06ea964 NC |
9415 | |
9416 | /* We use this so we can override certain functions | |
9417 | (though currently we don't). */ | |
9418 | ||
cec5225b | 9419 | const struct elf_size_info elfNN_aarch64_size_info = |
a06ea964 | 9420 | { |
cec5225b YZ |
9421 | sizeof (ElfNN_External_Ehdr), |
9422 | sizeof (ElfNN_External_Phdr), | |
9423 | sizeof (ElfNN_External_Shdr), | |
9424 | sizeof (ElfNN_External_Rel), | |
9425 | sizeof (ElfNN_External_Rela), | |
9426 | sizeof (ElfNN_External_Sym), | |
9427 | sizeof (ElfNN_External_Dyn), | |
a06ea964 NC |
9428 | sizeof (Elf_External_Note), |
9429 | 4, /* Hash table entry size. */ | |
9430 | 1, /* Internal relocs per external relocs. */ | |
cec5225b YZ |
9431 | ARCH_SIZE, /* Arch size. */ |
9432 | LOG_FILE_ALIGN, /* Log_file_align. */ | |
9433 | ELFCLASSNN, EV_CURRENT, | |
9434 | bfd_elfNN_write_out_phdrs, | |
9435 | bfd_elfNN_write_shdrs_and_ehdr, | |
9436 | bfd_elfNN_checksum_contents, | |
9437 | bfd_elfNN_write_relocs, | |
9438 | bfd_elfNN_swap_symbol_in, | |
9439 | bfd_elfNN_swap_symbol_out, | |
9440 | bfd_elfNN_slurp_reloc_table, | |
9441 | bfd_elfNN_slurp_symbol_table, | |
9442 | bfd_elfNN_swap_dyn_in, | |
9443 | bfd_elfNN_swap_dyn_out, | |
9444 | bfd_elfNN_swap_reloc_in, | |
9445 | bfd_elfNN_swap_reloc_out, | |
9446 | bfd_elfNN_swap_reloca_in, | |
9447 | bfd_elfNN_swap_reloca_out | |
a06ea964 NC |
9448 | }; |
9449 | ||
9450 | #define ELF_ARCH bfd_arch_aarch64 | |
9451 | #define ELF_MACHINE_CODE EM_AARCH64 | |
9452 | #define ELF_MAXPAGESIZE 0x10000 | |
9453 | #define ELF_MINPAGESIZE 0x1000 | |
9454 | #define ELF_COMMONPAGESIZE 0x1000 | |
9455 | ||
07d6d2b8 | 9456 | #define bfd_elfNN_close_and_cleanup \ |
cec5225b | 9457 | elfNN_aarch64_close_and_cleanup |
a06ea964 | 9458 | |
07d6d2b8 | 9459 | #define bfd_elfNN_bfd_free_cached_info \ |
cec5225b | 9460 | elfNN_aarch64_bfd_free_cached_info |
a06ea964 | 9461 | |
cec5225b YZ |
9462 | #define bfd_elfNN_bfd_is_target_special_symbol \ |
9463 | elfNN_aarch64_is_target_special_symbol | |
a06ea964 | 9464 | |
07d6d2b8 | 9465 | #define bfd_elfNN_bfd_link_hash_table_create \ |
cec5225b | 9466 | elfNN_aarch64_link_hash_table_create |
a06ea964 | 9467 | |
cec5225b YZ |
9468 | #define bfd_elfNN_bfd_merge_private_bfd_data \ |
9469 | elfNN_aarch64_merge_private_bfd_data | |
a06ea964 | 9470 | |
cec5225b YZ |
9471 | #define bfd_elfNN_bfd_print_private_bfd_data \ |
9472 | elfNN_aarch64_print_private_bfd_data | |
a06ea964 | 9473 | |
cec5225b YZ |
9474 | #define bfd_elfNN_bfd_reloc_type_lookup \ |
9475 | elfNN_aarch64_reloc_type_lookup | |
a06ea964 | 9476 | |
cec5225b YZ |
9477 | #define bfd_elfNN_bfd_reloc_name_lookup \ |
9478 | elfNN_aarch64_reloc_name_lookup | |
a06ea964 | 9479 | |
cec5225b YZ |
9480 | #define bfd_elfNN_bfd_set_private_flags \ |
9481 | elfNN_aarch64_set_private_flags | |
a06ea964 | 9482 | |
cec5225b YZ |
9483 | #define bfd_elfNN_find_inliner_info \ |
9484 | elfNN_aarch64_find_inliner_info | |
a06ea964 | 9485 | |
cec5225b YZ |
9486 | #define bfd_elfNN_find_nearest_line \ |
9487 | elfNN_aarch64_find_nearest_line | |
a06ea964 | 9488 | |
cec5225b YZ |
9489 | #define bfd_elfNN_mkobject \ |
9490 | elfNN_aarch64_mkobject | |
a06ea964 | 9491 | |
cec5225b YZ |
9492 | #define bfd_elfNN_new_section_hook \ |
9493 | elfNN_aarch64_new_section_hook | |
a06ea964 NC |
9494 | |
9495 | #define elf_backend_adjust_dynamic_symbol \ | |
cec5225b | 9496 | elfNN_aarch64_adjust_dynamic_symbol |
a06ea964 NC |
9497 | |
9498 | #define elf_backend_always_size_sections \ | |
cec5225b | 9499 | elfNN_aarch64_always_size_sections |
a06ea964 NC |
9500 | |
9501 | #define elf_backend_check_relocs \ | |
cec5225b | 9502 | elfNN_aarch64_check_relocs |
a06ea964 NC |
9503 | |
9504 | #define elf_backend_copy_indirect_symbol \ | |
cec5225b | 9505 | elfNN_aarch64_copy_indirect_symbol |
a06ea964 NC |
9506 | |
9507 | /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts | |
9508 | to them in our hash. */ | |
9509 | #define elf_backend_create_dynamic_sections \ | |
cec5225b | 9510 | elfNN_aarch64_create_dynamic_sections |
a06ea964 NC |
9511 | |
9512 | #define elf_backend_init_index_section \ | |
9513 | _bfd_elf_init_2_index_sections | |
9514 | ||
a06ea964 | 9515 | #define elf_backend_finish_dynamic_sections \ |
cec5225b | 9516 | elfNN_aarch64_finish_dynamic_sections |
a06ea964 NC |
9517 | |
9518 | #define elf_backend_finish_dynamic_symbol \ | |
cec5225b | 9519 | elfNN_aarch64_finish_dynamic_symbol |
a06ea964 | 9520 | |
a06ea964 | 9521 | #define elf_backend_object_p \ |
cec5225b | 9522 | elfNN_aarch64_object_p |
a06ea964 | 9523 | |
07d6d2b8 | 9524 | #define elf_backend_output_arch_local_syms \ |
cec5225b | 9525 | elfNN_aarch64_output_arch_local_syms |
a06ea964 NC |
9526 | |
9527 | #define elf_backend_plt_sym_val \ | |
cec5225b | 9528 | elfNN_aarch64_plt_sym_val |
a06ea964 NC |
9529 | |
9530 | #define elf_backend_post_process_headers \ | |
cec5225b | 9531 | elfNN_aarch64_post_process_headers |
a06ea964 NC |
9532 | |
9533 | #define elf_backend_relocate_section \ | |
cec5225b | 9534 | elfNN_aarch64_relocate_section |
a06ea964 NC |
9535 | |
9536 | #define elf_backend_reloc_type_class \ | |
cec5225b | 9537 | elfNN_aarch64_reloc_type_class |
a06ea964 | 9538 | |
a06ea964 | 9539 | #define elf_backend_section_from_shdr \ |
cec5225b | 9540 | elfNN_aarch64_section_from_shdr |
a06ea964 NC |
9541 | |
9542 | #define elf_backend_size_dynamic_sections \ | |
cec5225b | 9543 | elfNN_aarch64_size_dynamic_sections |
a06ea964 NC |
9544 | |
9545 | #define elf_backend_size_info \ | |
cec5225b | 9546 | elfNN_aarch64_size_info |
a06ea964 | 9547 | |
68fcca92 JW |
9548 | #define elf_backend_write_section \ |
9549 | elfNN_aarch64_write_section | |
9550 | ||
d691934d NC |
9551 | #define elf_backend_symbol_processing \ |
9552 | elfNN_aarch64_backend_symbol_processing | |
9553 | ||
a06ea964 | 9554 | #define elf_backend_can_refcount 1 |
59c108f7 | 9555 | #define elf_backend_can_gc_sections 1 |
a06ea964 NC |
9556 | #define elf_backend_plt_readonly 1 |
9557 | #define elf_backend_want_got_plt 1 | |
9558 | #define elf_backend_want_plt_sym 0 | |
5474d94f | 9559 | #define elf_backend_want_dynrelro 1 |
a06ea964 NC |
9560 | #define elf_backend_may_use_rel_p 0 |
9561 | #define elf_backend_may_use_rela_p 1 | |
9562 | #define elf_backend_default_use_rela_p 1 | |
07d6d2b8 | 9563 | #define elf_backend_rela_normal 1 |
64f52338 | 9564 | #define elf_backend_dtrel_excludes_plt 1 |
a06ea964 | 9565 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3) |
c495064d | 9566 | #define elf_backend_default_execstack 0 |
32f573bc | 9567 | #define elf_backend_extern_protected_data 1 |
7f784814 | 9568 | #define elf_backend_hash_symbol elf_aarch64_hash_symbol |
a06ea964 | 9569 | |
07d6d2b8 | 9570 | #undef elf_backend_obj_attrs_section |
a06ea964 NC |
9571 | #define elf_backend_obj_attrs_section ".ARM.attributes" |
9572 | ||
cec5225b | 9573 | #include "elfNN-target.h" |
a75cf613 ES |
9574 | |
9575 | /* CloudABI support. */ | |
9576 | ||
9577 | #undef TARGET_LITTLE_SYM | |
9578 | #define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec | |
9579 | #undef TARGET_LITTLE_NAME | |
9580 | #define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi" | |
9581 | #undef TARGET_BIG_SYM | |
9582 | #define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec | |
9583 | #undef TARGET_BIG_NAME | |
9584 | #define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi" | |
9585 | ||
9586 | #undef ELF_OSABI | |
9587 | #define ELF_OSABI ELFOSABI_CLOUDABI | |
9588 | ||
9589 | #undef elfNN_bed | |
9590 | #define elfNN_bed elfNN_aarch64_cloudabi_bed | |
9591 | ||
9592 | #include "elfNN-target.h" |