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cec5225b | 1 | /* AArch64-specific support for NN-bit ELF. |
b90efa5b | 2 | Copyright (C) 2009-2015 Free Software Foundation, Inc. |
a06ea964 NC |
3 | Contributed by ARM Ltd. |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; see the file COPYING3. If not, | |
19 | see <http://www.gnu.org/licenses/>. */ | |
20 | ||
21 | /* Notes on implementation: | |
22 | ||
23 | Thread Local Store (TLS) | |
24 | ||
25 | Overview: | |
26 | ||
27 | The implementation currently supports both traditional TLS and TLS | |
28 | descriptors, but only general dynamic (GD). | |
29 | ||
30 | For traditional TLS the assembler will present us with code | |
31 | fragments of the form: | |
32 | ||
33 | adrp x0, :tlsgd:foo | |
34 | R_AARCH64_TLSGD_ADR_PAGE21(foo) | |
35 | add x0, :tlsgd_lo12:foo | |
36 | R_AARCH64_TLSGD_ADD_LO12_NC(foo) | |
37 | bl __tls_get_addr | |
38 | nop | |
39 | ||
40 | For TLS descriptors the assembler will present us with code | |
41 | fragments of the form: | |
42 | ||
418009c2 | 43 | adrp x0, :tlsdesc:foo R_AARCH64_TLSDESC_ADR_PAGE21(foo) |
a06ea964 NC |
44 | ldr x1, [x0, #:tlsdesc_lo12:foo] R_AARCH64_TLSDESC_LD64_LO12(foo) |
45 | add x0, x0, #:tlsdesc_lo12:foo R_AARCH64_TLSDESC_ADD_LO12(foo) | |
46 | .tlsdesccall foo | |
47 | blr x1 R_AARCH64_TLSDESC_CALL(foo) | |
48 | ||
49 | The relocations R_AARCH64_TLSGD_{ADR_PREL21,ADD_LO12_NC} against foo | |
50 | indicate that foo is thread local and should be accessed via the | |
51 | traditional TLS mechanims. | |
52 | ||
a6bb11b2 | 53 | The relocations R_AARCH64_TLSDESC_{ADR_PAGE21,LD64_LO12_NC,ADD_LO12_NC} |
a06ea964 NC |
54 | against foo indicate that 'foo' is thread local and should be accessed |
55 | via a TLS descriptor mechanism. | |
56 | ||
57 | The precise instruction sequence is only relevant from the | |
58 | perspective of linker relaxation which is currently not implemented. | |
59 | ||
60 | The static linker must detect that 'foo' is a TLS object and | |
61 | allocate a double GOT entry. The GOT entry must be created for both | |
62 | global and local TLS symbols. Note that this is different to none | |
63 | TLS local objects which do not need a GOT entry. | |
64 | ||
65 | In the traditional TLS mechanism, the double GOT entry is used to | |
66 | provide the tls_index structure, containing module and offset | |
a6bb11b2 | 67 | entries. The static linker places the relocation R_AARCH64_TLS_DTPMOD |
a06ea964 NC |
68 | on the module entry. The loader will subsequently fixup this |
69 | relocation with the module identity. | |
70 | ||
71 | For global traditional TLS symbols the static linker places an | |
a6bb11b2 | 72 | R_AARCH64_TLS_DTPREL relocation on the offset entry. The loader |
a06ea964 NC |
73 | will subsequently fixup the offset. For local TLS symbols the static |
74 | linker fixes up offset. | |
75 | ||
76 | In the TLS descriptor mechanism the double GOT entry is used to | |
77 | provide the descriptor. The static linker places the relocation | |
78 | R_AARCH64_TLSDESC on the first GOT slot. The loader will | |
79 | subsequently fix this up. | |
80 | ||
81 | Implementation: | |
82 | ||
83 | The handling of TLS symbols is implemented across a number of | |
84 | different backend functions. The following is a top level view of | |
85 | what processing is performed where. | |
86 | ||
87 | The TLS implementation maintains state information for each TLS | |
88 | symbol. The state information for local and global symbols is kept | |
89 | in different places. Global symbols use generic BFD structures while | |
90 | local symbols use backend specific structures that are allocated and | |
91 | maintained entirely by the backend. | |
92 | ||
93 | The flow: | |
94 | ||
cec5225b | 95 | elfNN_aarch64_check_relocs() |
a06ea964 NC |
96 | |
97 | This function is invoked for each relocation. | |
98 | ||
99 | The TLS relocations R_AARCH64_TLSGD_{ADR_PREL21,ADD_LO12_NC} and | |
a6bb11b2 | 100 | R_AARCH64_TLSDESC_{ADR_PAGE21,LD64_LO12_NC,ADD_LO12_NC} are |
a06ea964 NC |
101 | spotted. One time creation of local symbol data structures are |
102 | created when the first local symbol is seen. | |
103 | ||
104 | The reference count for a symbol is incremented. The GOT type for | |
105 | each symbol is marked as general dynamic. | |
106 | ||
cec5225b | 107 | elfNN_aarch64_allocate_dynrelocs () |
a06ea964 NC |
108 | |
109 | For each global with positive reference count we allocate a double | |
110 | GOT slot. For a traditional TLS symbol we allocate space for two | |
111 | relocation entries on the GOT, for a TLS descriptor symbol we | |
112 | allocate space for one relocation on the slot. Record the GOT offset | |
113 | for this symbol. | |
114 | ||
cec5225b | 115 | elfNN_aarch64_size_dynamic_sections () |
a06ea964 NC |
116 | |
117 | Iterate all input BFDS, look for in the local symbol data structure | |
118 | constructed earlier for local TLS symbols and allocate them double | |
119 | GOT slots along with space for a single GOT relocation. Update the | |
120 | local symbol structure to record the GOT offset allocated. | |
121 | ||
cec5225b | 122 | elfNN_aarch64_relocate_section () |
a06ea964 | 123 | |
cec5225b | 124 | Calls elfNN_aarch64_final_link_relocate () |
a06ea964 NC |
125 | |
126 | Emit the relevant TLS relocations against the GOT for each TLS | |
127 | symbol. For local TLS symbols emit the GOT offset directly. The GOT | |
128 | relocations are emitted once the first time a TLS symbol is | |
129 | encountered. The implementation uses the LSB of the GOT offset to | |
130 | flag that the relevant GOT relocations for a symbol have been | |
131 | emitted. All of the TLS code that uses the GOT offset needs to take | |
132 | care to mask out this flag bit before using the offset. | |
133 | ||
cec5225b | 134 | elfNN_aarch64_final_link_relocate () |
a06ea964 NC |
135 | |
136 | Fixup the R_AARCH64_TLSGD_{ADR_PREL21, ADD_LO12_NC} relocations. */ | |
137 | ||
138 | #include "sysdep.h" | |
139 | #include "bfd.h" | |
140 | #include "libiberty.h" | |
141 | #include "libbfd.h" | |
142 | #include "bfd_stdint.h" | |
143 | #include "elf-bfd.h" | |
144 | #include "bfdlink.h" | |
1419bbe5 | 145 | #include "objalloc.h" |
a06ea964 | 146 | #include "elf/aarch64.h" |
caed7120 | 147 | #include "elfxx-aarch64.h" |
a06ea964 | 148 | |
cec5225b YZ |
149 | #define ARCH_SIZE NN |
150 | ||
151 | #if ARCH_SIZE == 64 | |
152 | #define AARCH64_R(NAME) R_AARCH64_ ## NAME | |
153 | #define AARCH64_R_STR(NAME) "R_AARCH64_" #NAME | |
a6bb11b2 YZ |
154 | #define HOWTO64(...) HOWTO (__VA_ARGS__) |
155 | #define HOWTO32(...) EMPTY_HOWTO (0) | |
cec5225b YZ |
156 | #define LOG_FILE_ALIGN 3 |
157 | #endif | |
158 | ||
159 | #if ARCH_SIZE == 32 | |
160 | #define AARCH64_R(NAME) R_AARCH64_P32_ ## NAME | |
161 | #define AARCH64_R_STR(NAME) "R_AARCH64_P32_" #NAME | |
a6bb11b2 YZ |
162 | #define HOWTO64(...) EMPTY_HOWTO (0) |
163 | #define HOWTO32(...) HOWTO (__VA_ARGS__) | |
cec5225b YZ |
164 | #define LOG_FILE_ALIGN 2 |
165 | #endif | |
166 | ||
a6bb11b2 | 167 | #define IS_AARCH64_TLS_RELOC(R_TYPE) \ |
4c0a9a6f JW |
168 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \ |
169 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \ | |
3c12b054 | 170 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \ |
a6bb11b2 | 171 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \ |
a6bb11b2 | 172 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC \ |
4c0a9a6f | 173 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC \ |
a6bb11b2 | 174 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \ |
4c0a9a6f JW |
175 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC \ |
176 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1 \ | |
6ffe9a1b | 177 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12 \ |
40fbed84 | 178 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12 \ |
753999c1 | 179 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC \ |
73f925cc | 180 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \ |
f69e4920 | 181 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \ |
77a69ff8 | 182 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 \ |
07c9aa07 JW |
183 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12 \ |
184 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC \ | |
185 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12 \ | |
186 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC \ | |
187 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12 \ | |
188 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC \ | |
189 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12 \ | |
190 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC \ | |
6ffe9a1b JW |
191 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0 \ |
192 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC \ | |
193 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1 \ | |
194 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC \ | |
195 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2 \ | |
a6bb11b2 | 196 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 \ |
4c0a9a6f | 197 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12 \ |
a6bb11b2 | 198 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC \ |
a6bb11b2 YZ |
199 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0 \ |
200 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC \ | |
4c0a9a6f JW |
201 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 \ |
202 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC \ | |
203 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 \ | |
a6bb11b2 YZ |
204 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPMOD \ |
205 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPREL \ | |
206 | || (R_TYPE) == BFD_RELOC_AARCH64_TLS_TPREL \ | |
a06ea964 NC |
207 | || IS_AARCH64_TLSDESC_RELOC ((R_TYPE))) |
208 | ||
9331eea1 | 209 | #define IS_AARCH64_TLS_RELAX_RELOC(R_TYPE) \ |
4af68b9c JW |
210 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC \ |
211 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \ | |
212 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \ | |
213 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \ | |
214 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \ | |
215 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC \ | |
216 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \ | |
9331eea1 JW |
217 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \ |
218 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \ | |
219 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \ | |
220 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \ | |
221 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC \ | |
259364ad JW |
222 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \ |
223 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \ | |
4af68b9c | 224 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21) |
9331eea1 | 225 | |
a6bb11b2 | 226 | #define IS_AARCH64_TLSDESC_RELOC(R_TYPE) \ |
4c0a9a6f JW |
227 | ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC \ |
228 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \ | |
229 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC \ | |
a6bb11b2 | 230 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \ |
389b8029 | 231 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \ |
4c0a9a6f | 232 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \ |
a6bb11b2 | 233 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC \ |
4c0a9a6f | 234 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC \ |
a6bb11b2 | 235 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \ |
4c0a9a6f JW |
236 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \ |
237 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \ | |
238 | || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1) | |
a06ea964 NC |
239 | |
240 | #define ELIMINATE_COPY_RELOCS 0 | |
241 | ||
a06ea964 | 242 | /* Return size of a relocation entry. HTAB is the bfd's |
cec5225b YZ |
243 | elf_aarch64_link_hash_entry. */ |
244 | #define RELOC_SIZE(HTAB) (sizeof (ElfNN_External_Rela)) | |
a06ea964 | 245 | |
cec5225b YZ |
246 | /* GOT Entry size - 8 bytes in ELF64 and 4 bytes in ELF32. */ |
247 | #define GOT_ENTRY_SIZE (ARCH_SIZE / 8) | |
a06ea964 NC |
248 | #define PLT_ENTRY_SIZE (32) |
249 | #define PLT_SMALL_ENTRY_SIZE (16) | |
250 | #define PLT_TLSDESC_ENTRY_SIZE (32) | |
251 | ||
a06ea964 NC |
252 | /* Encoding of the nop instruction */ |
253 | #define INSN_NOP 0xd503201f | |
254 | ||
255 | #define aarch64_compute_jump_table_size(htab) \ | |
256 | (((htab)->root.srelplt == NULL) ? 0 \ | |
257 | : (htab)->root.srelplt->reloc_count * GOT_ENTRY_SIZE) | |
258 | ||
259 | /* The first entry in a procedure linkage table looks like this | |
260 | if the distance between the PLTGOT and the PLT is < 4GB use | |
261 | these PLT entries. Note that the dynamic linker gets &PLTGOT[2] | |
262 | in x16 and needs to work out PLTGOT[1] by using an address of | |
cec5225b YZ |
263 | [x16,#-GOT_ENTRY_SIZE]. */ |
264 | static const bfd_byte elfNN_aarch64_small_plt0_entry[PLT_ENTRY_SIZE] = | |
a06ea964 NC |
265 | { |
266 | 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */ | |
267 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */ | |
caed7120 | 268 | #if ARCH_SIZE == 64 |
a06ea964 NC |
269 | 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */ |
270 | 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */ | |
caed7120 YZ |
271 | #else |
272 | 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */ | |
273 | 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */ | |
274 | #endif | |
a06ea964 NC |
275 | 0x20, 0x02, 0x1f, 0xd6, /* br x17 */ |
276 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
277 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
278 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
279 | }; | |
280 | ||
281 | /* Per function entry in a procedure linkage table looks like this | |
282 | if the distance between the PLTGOT and the PLT is < 4GB use | |
283 | these PLT entries. */ | |
cec5225b | 284 | static const bfd_byte elfNN_aarch64_small_plt_entry[PLT_SMALL_ENTRY_SIZE] = |
a06ea964 NC |
285 | { |
286 | 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */ | |
caed7120 | 287 | #if ARCH_SIZE == 64 |
a06ea964 NC |
288 | 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */ |
289 | 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */ | |
caed7120 YZ |
290 | #else |
291 | 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */ | |
292 | 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */ | |
293 | #endif | |
a06ea964 NC |
294 | 0x20, 0x02, 0x1f, 0xd6, /* br x17. */ |
295 | }; | |
296 | ||
297 | static const bfd_byte | |
cec5225b | 298 | elfNN_aarch64_tlsdesc_small_plt_entry[PLT_TLSDESC_ENTRY_SIZE] = |
a06ea964 NC |
299 | { |
300 | 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */ | |
301 | 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */ | |
302 | 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */ | |
caed7120 YZ |
303 | #if ARCH_SIZE == 64 |
304 | 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */ | |
a06ea964 | 305 | 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */ |
caed7120 YZ |
306 | #else |
307 | 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */ | |
308 | 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */ | |
309 | #endif | |
310 | 0x40, 0x00, 0x1f, 0xd6, /* br x2 */ | |
a06ea964 NC |
311 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ |
312 | 0x1f, 0x20, 0x03, 0xd5, /* nop */ | |
313 | }; | |
314 | ||
cec5225b YZ |
315 | #define elf_info_to_howto elfNN_aarch64_info_to_howto |
316 | #define elf_info_to_howto_rel elfNN_aarch64_info_to_howto | |
a06ea964 NC |
317 | |
318 | #define AARCH64_ELF_ABI_VERSION 0 | |
a06ea964 NC |
319 | |
320 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ | |
321 | #define ALL_ONES (~ (bfd_vma) 0) | |
322 | ||
a6bb11b2 YZ |
323 | /* Indexed by the bfd interal reloc enumerators. |
324 | Therefore, the table needs to be synced with BFD_RELOC_AARCH64_* | |
325 | in reloc.c. */ | |
a06ea964 | 326 | |
a6bb11b2 | 327 | static reloc_howto_type elfNN_aarch64_howto_table[] = |
a06ea964 | 328 | { |
a6bb11b2 | 329 | EMPTY_HOWTO (0), |
a06ea964 | 330 | |
a6bb11b2 | 331 | /* Basic data relocations. */ |
a06ea964 | 332 | |
a6bb11b2 YZ |
333 | #if ARCH_SIZE == 64 |
334 | HOWTO (R_AARCH64_NULL, /* type */ | |
a06ea964 | 335 | 0, /* rightshift */ |
6346d5ca | 336 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a6bb11b2 | 337 | 0, /* bitsize */ |
a06ea964 NC |
338 | FALSE, /* pc_relative */ |
339 | 0, /* bitpos */ | |
340 | complain_overflow_dont, /* complain_on_overflow */ | |
341 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 342 | "R_AARCH64_NULL", /* name */ |
a06ea964 NC |
343 | FALSE, /* partial_inplace */ |
344 | 0, /* src_mask */ | |
a6bb11b2 | 345 | 0, /* dst_mask */ |
a06ea964 | 346 | FALSE), /* pcrel_offset */ |
a6bb11b2 YZ |
347 | #else |
348 | HOWTO (R_AARCH64_NONE, /* type */ | |
a06ea964 | 349 | 0, /* rightshift */ |
6346d5ca | 350 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a06ea964 NC |
351 | 0, /* bitsize */ |
352 | FALSE, /* pc_relative */ | |
353 | 0, /* bitpos */ | |
354 | complain_overflow_dont, /* complain_on_overflow */ | |
355 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 356 | "R_AARCH64_NONE", /* name */ |
a06ea964 NC |
357 | FALSE, /* partial_inplace */ |
358 | 0, /* src_mask */ | |
359 | 0, /* dst_mask */ | |
360 | FALSE), /* pcrel_offset */ | |
a6bb11b2 | 361 | #endif |
a06ea964 NC |
362 | |
363 | /* .xword: (S+A) */ | |
a6bb11b2 | 364 | HOWTO64 (AARCH64_R (ABS64), /* type */ |
a06ea964 NC |
365 | 0, /* rightshift */ |
366 | 4, /* size (4 = long long) */ | |
367 | 64, /* bitsize */ | |
368 | FALSE, /* pc_relative */ | |
369 | 0, /* bitpos */ | |
370 | complain_overflow_unsigned, /* complain_on_overflow */ | |
371 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 372 | AARCH64_R_STR (ABS64), /* name */ |
a06ea964 NC |
373 | FALSE, /* partial_inplace */ |
374 | ALL_ONES, /* src_mask */ | |
375 | ALL_ONES, /* dst_mask */ | |
376 | FALSE), /* pcrel_offset */ | |
377 | ||
378 | /* .word: (S+A) */ | |
a6bb11b2 | 379 | HOWTO (AARCH64_R (ABS32), /* type */ |
a06ea964 NC |
380 | 0, /* rightshift */ |
381 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
382 | 32, /* bitsize */ | |
383 | FALSE, /* pc_relative */ | |
384 | 0, /* bitpos */ | |
385 | complain_overflow_unsigned, /* complain_on_overflow */ | |
386 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 387 | AARCH64_R_STR (ABS32), /* name */ |
a06ea964 NC |
388 | FALSE, /* partial_inplace */ |
389 | 0xffffffff, /* src_mask */ | |
390 | 0xffffffff, /* dst_mask */ | |
391 | FALSE), /* pcrel_offset */ | |
392 | ||
393 | /* .half: (S+A) */ | |
a6bb11b2 | 394 | HOWTO (AARCH64_R (ABS16), /* type */ |
a06ea964 NC |
395 | 0, /* rightshift */ |
396 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
397 | 16, /* bitsize */ | |
398 | FALSE, /* pc_relative */ | |
399 | 0, /* bitpos */ | |
400 | complain_overflow_unsigned, /* complain_on_overflow */ | |
401 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 402 | AARCH64_R_STR (ABS16), /* name */ |
a06ea964 NC |
403 | FALSE, /* partial_inplace */ |
404 | 0xffff, /* src_mask */ | |
405 | 0xffff, /* dst_mask */ | |
406 | FALSE), /* pcrel_offset */ | |
407 | ||
408 | /* .xword: (S+A-P) */ | |
a6bb11b2 | 409 | HOWTO64 (AARCH64_R (PREL64), /* type */ |
a06ea964 NC |
410 | 0, /* rightshift */ |
411 | 4, /* size (4 = long long) */ | |
412 | 64, /* bitsize */ | |
413 | TRUE, /* pc_relative */ | |
414 | 0, /* bitpos */ | |
415 | complain_overflow_signed, /* complain_on_overflow */ | |
416 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 417 | AARCH64_R_STR (PREL64), /* name */ |
a06ea964 NC |
418 | FALSE, /* partial_inplace */ |
419 | ALL_ONES, /* src_mask */ | |
420 | ALL_ONES, /* dst_mask */ | |
421 | TRUE), /* pcrel_offset */ | |
422 | ||
423 | /* .word: (S+A-P) */ | |
a6bb11b2 | 424 | HOWTO (AARCH64_R (PREL32), /* type */ |
a06ea964 NC |
425 | 0, /* rightshift */ |
426 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
427 | 32, /* bitsize */ | |
428 | TRUE, /* pc_relative */ | |
429 | 0, /* bitpos */ | |
430 | complain_overflow_signed, /* complain_on_overflow */ | |
431 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 432 | AARCH64_R_STR (PREL32), /* name */ |
a06ea964 NC |
433 | FALSE, /* partial_inplace */ |
434 | 0xffffffff, /* src_mask */ | |
435 | 0xffffffff, /* dst_mask */ | |
436 | TRUE), /* pcrel_offset */ | |
437 | ||
438 | /* .half: (S+A-P) */ | |
a6bb11b2 | 439 | HOWTO (AARCH64_R (PREL16), /* type */ |
a06ea964 NC |
440 | 0, /* rightshift */ |
441 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
442 | 16, /* bitsize */ | |
443 | TRUE, /* pc_relative */ | |
444 | 0, /* bitpos */ | |
445 | complain_overflow_signed, /* complain_on_overflow */ | |
446 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 447 | AARCH64_R_STR (PREL16), /* name */ |
a06ea964 NC |
448 | FALSE, /* partial_inplace */ |
449 | 0xffff, /* src_mask */ | |
450 | 0xffff, /* dst_mask */ | |
451 | TRUE), /* pcrel_offset */ | |
452 | ||
453 | /* Group relocations to create a 16, 32, 48 or 64 bit | |
454 | unsigned data or abs address inline. */ | |
455 | ||
456 | /* MOVZ: ((S+A) >> 0) & 0xffff */ | |
a6bb11b2 | 457 | HOWTO (AARCH64_R (MOVW_UABS_G0), /* type */ |
a06ea964 NC |
458 | 0, /* rightshift */ |
459 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
460 | 16, /* bitsize */ | |
461 | FALSE, /* pc_relative */ | |
462 | 0, /* bitpos */ | |
463 | complain_overflow_unsigned, /* complain_on_overflow */ | |
464 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 465 | AARCH64_R_STR (MOVW_UABS_G0), /* name */ |
a06ea964 NC |
466 | FALSE, /* partial_inplace */ |
467 | 0xffff, /* src_mask */ | |
468 | 0xffff, /* dst_mask */ | |
469 | FALSE), /* pcrel_offset */ | |
470 | ||
471 | /* MOVK: ((S+A) >> 0) & 0xffff [no overflow check] */ | |
a6bb11b2 | 472 | HOWTO (AARCH64_R (MOVW_UABS_G0_NC), /* type */ |
a06ea964 NC |
473 | 0, /* rightshift */ |
474 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
475 | 16, /* bitsize */ | |
476 | FALSE, /* pc_relative */ | |
477 | 0, /* bitpos */ | |
478 | complain_overflow_dont, /* complain_on_overflow */ | |
479 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 480 | AARCH64_R_STR (MOVW_UABS_G0_NC), /* name */ |
a06ea964 NC |
481 | FALSE, /* partial_inplace */ |
482 | 0xffff, /* src_mask */ | |
483 | 0xffff, /* dst_mask */ | |
484 | FALSE), /* pcrel_offset */ | |
485 | ||
486 | /* MOVZ: ((S+A) >> 16) & 0xffff */ | |
a6bb11b2 | 487 | HOWTO (AARCH64_R (MOVW_UABS_G1), /* type */ |
a06ea964 NC |
488 | 16, /* rightshift */ |
489 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
490 | 16, /* bitsize */ | |
491 | FALSE, /* pc_relative */ | |
492 | 0, /* bitpos */ | |
493 | complain_overflow_unsigned, /* complain_on_overflow */ | |
494 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 495 | AARCH64_R_STR (MOVW_UABS_G1), /* name */ |
a06ea964 NC |
496 | FALSE, /* partial_inplace */ |
497 | 0xffff, /* src_mask */ | |
498 | 0xffff, /* dst_mask */ | |
499 | FALSE), /* pcrel_offset */ | |
500 | ||
501 | /* MOVK: ((S+A) >> 16) & 0xffff [no overflow check] */ | |
a6bb11b2 | 502 | HOWTO64 (AARCH64_R (MOVW_UABS_G1_NC), /* type */ |
a06ea964 NC |
503 | 16, /* rightshift */ |
504 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
505 | 16, /* bitsize */ | |
506 | FALSE, /* pc_relative */ | |
507 | 0, /* bitpos */ | |
508 | complain_overflow_dont, /* complain_on_overflow */ | |
509 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 510 | AARCH64_R_STR (MOVW_UABS_G1_NC), /* name */ |
a06ea964 NC |
511 | FALSE, /* partial_inplace */ |
512 | 0xffff, /* src_mask */ | |
513 | 0xffff, /* dst_mask */ | |
514 | FALSE), /* pcrel_offset */ | |
515 | ||
516 | /* MOVZ: ((S+A) >> 32) & 0xffff */ | |
a6bb11b2 | 517 | HOWTO64 (AARCH64_R (MOVW_UABS_G2), /* type */ |
a06ea964 NC |
518 | 32, /* rightshift */ |
519 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
520 | 16, /* bitsize */ | |
521 | FALSE, /* pc_relative */ | |
522 | 0, /* bitpos */ | |
523 | complain_overflow_unsigned, /* complain_on_overflow */ | |
524 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 525 | AARCH64_R_STR (MOVW_UABS_G2), /* name */ |
a06ea964 NC |
526 | FALSE, /* partial_inplace */ |
527 | 0xffff, /* src_mask */ | |
528 | 0xffff, /* dst_mask */ | |
529 | FALSE), /* pcrel_offset */ | |
530 | ||
531 | /* MOVK: ((S+A) >> 32) & 0xffff [no overflow check] */ | |
a6bb11b2 | 532 | HOWTO64 (AARCH64_R (MOVW_UABS_G2_NC), /* type */ |
a06ea964 NC |
533 | 32, /* rightshift */ |
534 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
535 | 16, /* bitsize */ | |
536 | FALSE, /* pc_relative */ | |
537 | 0, /* bitpos */ | |
538 | complain_overflow_dont, /* complain_on_overflow */ | |
539 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 540 | AARCH64_R_STR (MOVW_UABS_G2_NC), /* name */ |
a06ea964 NC |
541 | FALSE, /* partial_inplace */ |
542 | 0xffff, /* src_mask */ | |
543 | 0xffff, /* dst_mask */ | |
544 | FALSE), /* pcrel_offset */ | |
545 | ||
546 | /* MOVZ: ((S+A) >> 48) & 0xffff */ | |
a6bb11b2 | 547 | HOWTO64 (AARCH64_R (MOVW_UABS_G3), /* type */ |
a06ea964 NC |
548 | 48, /* rightshift */ |
549 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
550 | 16, /* bitsize */ | |
551 | FALSE, /* pc_relative */ | |
552 | 0, /* bitpos */ | |
553 | complain_overflow_unsigned, /* complain_on_overflow */ | |
554 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 555 | AARCH64_R_STR (MOVW_UABS_G3), /* name */ |
a06ea964 NC |
556 | FALSE, /* partial_inplace */ |
557 | 0xffff, /* src_mask */ | |
558 | 0xffff, /* dst_mask */ | |
559 | FALSE), /* pcrel_offset */ | |
560 | ||
561 | /* Group relocations to create high part of a 16, 32, 48 or 64 bit | |
562 | signed data or abs address inline. Will change instruction | |
563 | to MOVN or MOVZ depending on sign of calculated value. */ | |
564 | ||
565 | /* MOV[ZN]: ((S+A) >> 0) & 0xffff */ | |
a6bb11b2 | 566 | HOWTO (AARCH64_R (MOVW_SABS_G0), /* type */ |
a06ea964 NC |
567 | 0, /* rightshift */ |
568 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
569 | 16, /* bitsize */ | |
570 | FALSE, /* pc_relative */ | |
571 | 0, /* bitpos */ | |
572 | complain_overflow_signed, /* complain_on_overflow */ | |
573 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 574 | AARCH64_R_STR (MOVW_SABS_G0), /* name */ |
a06ea964 NC |
575 | FALSE, /* partial_inplace */ |
576 | 0xffff, /* src_mask */ | |
577 | 0xffff, /* dst_mask */ | |
578 | FALSE), /* pcrel_offset */ | |
579 | ||
580 | /* MOV[ZN]: ((S+A) >> 16) & 0xffff */ | |
a6bb11b2 | 581 | HOWTO64 (AARCH64_R (MOVW_SABS_G1), /* type */ |
a06ea964 NC |
582 | 16, /* rightshift */ |
583 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
584 | 16, /* bitsize */ | |
585 | FALSE, /* pc_relative */ | |
586 | 0, /* bitpos */ | |
587 | complain_overflow_signed, /* complain_on_overflow */ | |
588 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 589 | AARCH64_R_STR (MOVW_SABS_G1), /* name */ |
a06ea964 NC |
590 | FALSE, /* partial_inplace */ |
591 | 0xffff, /* src_mask */ | |
592 | 0xffff, /* dst_mask */ | |
593 | FALSE), /* pcrel_offset */ | |
594 | ||
595 | /* MOV[ZN]: ((S+A) >> 32) & 0xffff */ | |
a6bb11b2 | 596 | HOWTO64 (AARCH64_R (MOVW_SABS_G2), /* type */ |
a06ea964 NC |
597 | 32, /* rightshift */ |
598 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
599 | 16, /* bitsize */ | |
600 | FALSE, /* pc_relative */ | |
601 | 0, /* bitpos */ | |
602 | complain_overflow_signed, /* complain_on_overflow */ | |
603 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 604 | AARCH64_R_STR (MOVW_SABS_G2), /* name */ |
a06ea964 NC |
605 | FALSE, /* partial_inplace */ |
606 | 0xffff, /* src_mask */ | |
607 | 0xffff, /* dst_mask */ | |
608 | FALSE), /* pcrel_offset */ | |
609 | ||
610 | /* Relocations to generate 19, 21 and 33 bit PC-relative load/store | |
611 | addresses: PG(x) is (x & ~0xfff). */ | |
612 | ||
613 | /* LD-lit: ((S+A-P) >> 2) & 0x7ffff */ | |
a6bb11b2 | 614 | HOWTO (AARCH64_R (LD_PREL_LO19), /* type */ |
a06ea964 NC |
615 | 2, /* rightshift */ |
616 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
617 | 19, /* bitsize */ | |
618 | TRUE, /* pc_relative */ | |
619 | 0, /* bitpos */ | |
620 | complain_overflow_signed, /* complain_on_overflow */ | |
621 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 622 | AARCH64_R_STR (LD_PREL_LO19), /* name */ |
a06ea964 NC |
623 | FALSE, /* partial_inplace */ |
624 | 0x7ffff, /* src_mask */ | |
625 | 0x7ffff, /* dst_mask */ | |
626 | TRUE), /* pcrel_offset */ | |
627 | ||
628 | /* ADR: (S+A-P) & 0x1fffff */ | |
a6bb11b2 | 629 | HOWTO (AARCH64_R (ADR_PREL_LO21), /* type */ |
a06ea964 NC |
630 | 0, /* rightshift */ |
631 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
632 | 21, /* bitsize */ | |
633 | TRUE, /* pc_relative */ | |
634 | 0, /* bitpos */ | |
635 | complain_overflow_signed, /* complain_on_overflow */ | |
636 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 637 | AARCH64_R_STR (ADR_PREL_LO21), /* name */ |
a06ea964 NC |
638 | FALSE, /* partial_inplace */ |
639 | 0x1fffff, /* src_mask */ | |
640 | 0x1fffff, /* dst_mask */ | |
641 | TRUE), /* pcrel_offset */ | |
642 | ||
643 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
a6bb11b2 | 644 | HOWTO (AARCH64_R (ADR_PREL_PG_HI21), /* type */ |
a06ea964 NC |
645 | 12, /* rightshift */ |
646 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
647 | 21, /* bitsize */ | |
648 | TRUE, /* pc_relative */ | |
649 | 0, /* bitpos */ | |
650 | complain_overflow_signed, /* complain_on_overflow */ | |
651 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 652 | AARCH64_R_STR (ADR_PREL_PG_HI21), /* name */ |
a06ea964 NC |
653 | FALSE, /* partial_inplace */ |
654 | 0x1fffff, /* src_mask */ | |
655 | 0x1fffff, /* dst_mask */ | |
656 | TRUE), /* pcrel_offset */ | |
657 | ||
658 | /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff [no overflow check] */ | |
a6bb11b2 | 659 | HOWTO64 (AARCH64_R (ADR_PREL_PG_HI21_NC), /* type */ |
a06ea964 NC |
660 | 12, /* rightshift */ |
661 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
662 | 21, /* bitsize */ | |
663 | TRUE, /* pc_relative */ | |
664 | 0, /* bitpos */ | |
665 | complain_overflow_dont, /* complain_on_overflow */ | |
666 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 667 | AARCH64_R_STR (ADR_PREL_PG_HI21_NC), /* name */ |
a06ea964 NC |
668 | FALSE, /* partial_inplace */ |
669 | 0x1fffff, /* src_mask */ | |
670 | 0x1fffff, /* dst_mask */ | |
671 | TRUE), /* pcrel_offset */ | |
672 | ||
673 | /* ADD: (S+A) & 0xfff [no overflow check] */ | |
a6bb11b2 | 674 | HOWTO (AARCH64_R (ADD_ABS_LO12_NC), /* type */ |
a06ea964 NC |
675 | 0, /* rightshift */ |
676 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
677 | 12, /* bitsize */ | |
678 | FALSE, /* pc_relative */ | |
679 | 10, /* bitpos */ | |
680 | complain_overflow_dont, /* complain_on_overflow */ | |
681 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 682 | AARCH64_R_STR (ADD_ABS_LO12_NC), /* name */ |
a06ea964 NC |
683 | FALSE, /* partial_inplace */ |
684 | 0x3ffc00, /* src_mask */ | |
685 | 0x3ffc00, /* dst_mask */ | |
686 | FALSE), /* pcrel_offset */ | |
687 | ||
688 | /* LD/ST8: (S+A) & 0xfff */ | |
a6bb11b2 | 689 | HOWTO (AARCH64_R (LDST8_ABS_LO12_NC), /* type */ |
a06ea964 NC |
690 | 0, /* rightshift */ |
691 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
692 | 12, /* bitsize */ | |
693 | FALSE, /* pc_relative */ | |
694 | 0, /* bitpos */ | |
695 | complain_overflow_dont, /* complain_on_overflow */ | |
696 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 697 | AARCH64_R_STR (LDST8_ABS_LO12_NC), /* name */ |
a06ea964 NC |
698 | FALSE, /* partial_inplace */ |
699 | 0xfff, /* src_mask */ | |
700 | 0xfff, /* dst_mask */ | |
701 | FALSE), /* pcrel_offset */ | |
702 | ||
703 | /* Relocations for control-flow instructions. */ | |
704 | ||
705 | /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */ | |
a6bb11b2 | 706 | HOWTO (AARCH64_R (TSTBR14), /* type */ |
a06ea964 NC |
707 | 2, /* rightshift */ |
708 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
709 | 14, /* bitsize */ | |
710 | TRUE, /* pc_relative */ | |
711 | 0, /* bitpos */ | |
712 | complain_overflow_signed, /* complain_on_overflow */ | |
713 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 714 | AARCH64_R_STR (TSTBR14), /* name */ |
a06ea964 NC |
715 | FALSE, /* partial_inplace */ |
716 | 0x3fff, /* src_mask */ | |
717 | 0x3fff, /* dst_mask */ | |
718 | TRUE), /* pcrel_offset */ | |
719 | ||
720 | /* B.cond: ((S+A-P) >> 2) & 0x7ffff */ | |
a6bb11b2 | 721 | HOWTO (AARCH64_R (CONDBR19), /* type */ |
a06ea964 NC |
722 | 2, /* rightshift */ |
723 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
724 | 19, /* bitsize */ | |
725 | TRUE, /* pc_relative */ | |
726 | 0, /* bitpos */ | |
727 | complain_overflow_signed, /* complain_on_overflow */ | |
728 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 729 | AARCH64_R_STR (CONDBR19), /* name */ |
a06ea964 NC |
730 | FALSE, /* partial_inplace */ |
731 | 0x7ffff, /* src_mask */ | |
732 | 0x7ffff, /* dst_mask */ | |
733 | TRUE), /* pcrel_offset */ | |
734 | ||
a06ea964 | 735 | /* B: ((S+A-P) >> 2) & 0x3ffffff */ |
a6bb11b2 | 736 | HOWTO (AARCH64_R (JUMP26), /* type */ |
a06ea964 NC |
737 | 2, /* rightshift */ |
738 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
739 | 26, /* bitsize */ | |
740 | TRUE, /* pc_relative */ | |
741 | 0, /* bitpos */ | |
742 | complain_overflow_signed, /* complain_on_overflow */ | |
743 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 744 | AARCH64_R_STR (JUMP26), /* name */ |
a06ea964 NC |
745 | FALSE, /* partial_inplace */ |
746 | 0x3ffffff, /* src_mask */ | |
747 | 0x3ffffff, /* dst_mask */ | |
748 | TRUE), /* pcrel_offset */ | |
749 | ||
750 | /* BL: ((S+A-P) >> 2) & 0x3ffffff */ | |
a6bb11b2 | 751 | HOWTO (AARCH64_R (CALL26), /* type */ |
a06ea964 NC |
752 | 2, /* rightshift */ |
753 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
754 | 26, /* bitsize */ | |
755 | TRUE, /* pc_relative */ | |
756 | 0, /* bitpos */ | |
757 | complain_overflow_signed, /* complain_on_overflow */ | |
758 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 759 | AARCH64_R_STR (CALL26), /* name */ |
a06ea964 NC |
760 | FALSE, /* partial_inplace */ |
761 | 0x3ffffff, /* src_mask */ | |
762 | 0x3ffffff, /* dst_mask */ | |
763 | TRUE), /* pcrel_offset */ | |
764 | ||
765 | /* LD/ST16: (S+A) & 0xffe */ | |
a6bb11b2 | 766 | HOWTO (AARCH64_R (LDST16_ABS_LO12_NC), /* type */ |
a06ea964 NC |
767 | 1, /* rightshift */ |
768 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
769 | 12, /* bitsize */ | |
770 | FALSE, /* pc_relative */ | |
771 | 0, /* bitpos */ | |
772 | complain_overflow_dont, /* complain_on_overflow */ | |
773 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 774 | AARCH64_R_STR (LDST16_ABS_LO12_NC), /* name */ |
a06ea964 NC |
775 | FALSE, /* partial_inplace */ |
776 | 0xffe, /* src_mask */ | |
777 | 0xffe, /* dst_mask */ | |
778 | FALSE), /* pcrel_offset */ | |
779 | ||
780 | /* LD/ST32: (S+A) & 0xffc */ | |
a6bb11b2 | 781 | HOWTO (AARCH64_R (LDST32_ABS_LO12_NC), /* type */ |
a06ea964 NC |
782 | 2, /* rightshift */ |
783 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
784 | 12, /* bitsize */ | |
785 | FALSE, /* pc_relative */ | |
786 | 0, /* bitpos */ | |
787 | complain_overflow_dont, /* complain_on_overflow */ | |
788 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 789 | AARCH64_R_STR (LDST32_ABS_LO12_NC), /* name */ |
a06ea964 NC |
790 | FALSE, /* partial_inplace */ |
791 | 0xffc, /* src_mask */ | |
792 | 0xffc, /* dst_mask */ | |
793 | FALSE), /* pcrel_offset */ | |
794 | ||
795 | /* LD/ST64: (S+A) & 0xff8 */ | |
a6bb11b2 | 796 | HOWTO (AARCH64_R (LDST64_ABS_LO12_NC), /* type */ |
a06ea964 NC |
797 | 3, /* rightshift */ |
798 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
799 | 12, /* bitsize */ | |
800 | FALSE, /* pc_relative */ | |
801 | 0, /* bitpos */ | |
802 | complain_overflow_dont, /* complain_on_overflow */ | |
803 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 804 | AARCH64_R_STR (LDST64_ABS_LO12_NC), /* name */ |
a06ea964 NC |
805 | FALSE, /* partial_inplace */ |
806 | 0xff8, /* src_mask */ | |
807 | 0xff8, /* dst_mask */ | |
808 | FALSE), /* pcrel_offset */ | |
809 | ||
a06ea964 | 810 | /* LD/ST128: (S+A) & 0xff0 */ |
a6bb11b2 | 811 | HOWTO (AARCH64_R (LDST128_ABS_LO12_NC), /* type */ |
a06ea964 NC |
812 | 4, /* rightshift */ |
813 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
814 | 12, /* bitsize */ | |
815 | FALSE, /* pc_relative */ | |
816 | 0, /* bitpos */ | |
817 | complain_overflow_dont, /* complain_on_overflow */ | |
818 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 819 | AARCH64_R_STR (LDST128_ABS_LO12_NC), /* name */ |
a06ea964 NC |
820 | FALSE, /* partial_inplace */ |
821 | 0xff0, /* src_mask */ | |
822 | 0xff0, /* dst_mask */ | |
823 | FALSE), /* pcrel_offset */ | |
824 | ||
f41aef5f RE |
825 | /* Set a load-literal immediate field to bits |
826 | 0x1FFFFC of G(S)-P */ | |
a6bb11b2 | 827 | HOWTO (AARCH64_R (GOT_LD_PREL19), /* type */ |
f41aef5f RE |
828 | 2, /* rightshift */ |
829 | 2, /* size (0 = byte,1 = short,2 = long) */ | |
830 | 19, /* bitsize */ | |
831 | TRUE, /* pc_relative */ | |
832 | 0, /* bitpos */ | |
833 | complain_overflow_signed, /* complain_on_overflow */ | |
834 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 835 | AARCH64_R_STR (GOT_LD_PREL19), /* name */ |
f41aef5f RE |
836 | FALSE, /* partial_inplace */ |
837 | 0xffffe0, /* src_mask */ | |
838 | 0xffffe0, /* dst_mask */ | |
839 | TRUE), /* pcrel_offset */ | |
840 | ||
a06ea964 NC |
841 | /* Get to the page for the GOT entry for the symbol |
842 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 843 | HOWTO (AARCH64_R (ADR_GOT_PAGE), /* type */ |
a06ea964 NC |
844 | 12, /* rightshift */ |
845 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
846 | 21, /* bitsize */ | |
847 | TRUE, /* pc_relative */ | |
848 | 0, /* bitpos */ | |
849 | complain_overflow_dont, /* complain_on_overflow */ | |
850 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 851 | AARCH64_R_STR (ADR_GOT_PAGE), /* name */ |
a06ea964 NC |
852 | FALSE, /* partial_inplace */ |
853 | 0x1fffff, /* src_mask */ | |
854 | 0x1fffff, /* dst_mask */ | |
855 | TRUE), /* pcrel_offset */ | |
856 | ||
a6bb11b2 YZ |
857 | /* LD64: GOT offset G(S) & 0xff8 */ |
858 | HOWTO64 (AARCH64_R (LD64_GOT_LO12_NC), /* type */ | |
a06ea964 NC |
859 | 3, /* rightshift */ |
860 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
861 | 12, /* bitsize */ | |
862 | FALSE, /* pc_relative */ | |
863 | 0, /* bitpos */ | |
864 | complain_overflow_dont, /* complain_on_overflow */ | |
865 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 866 | AARCH64_R_STR (LD64_GOT_LO12_NC), /* name */ |
a06ea964 NC |
867 | FALSE, /* partial_inplace */ |
868 | 0xff8, /* src_mask */ | |
869 | 0xff8, /* dst_mask */ | |
a6bb11b2 | 870 | FALSE), /* pcrel_offset */ |
a06ea964 | 871 | |
a6bb11b2 YZ |
872 | /* LD32: GOT offset G(S) & 0xffc */ |
873 | HOWTO32 (AARCH64_R (LD32_GOT_LO12_NC), /* type */ | |
874 | 2, /* rightshift */ | |
875 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
876 | 12, /* bitsize */ | |
877 | FALSE, /* pc_relative */ | |
878 | 0, /* bitpos */ | |
879 | complain_overflow_dont, /* complain_on_overflow */ | |
880 | bfd_elf_generic_reloc, /* special_function */ | |
881 | AARCH64_R_STR (LD32_GOT_LO12_NC), /* name */ | |
882 | FALSE, /* partial_inplace */ | |
883 | 0xffc, /* src_mask */ | |
884 | 0xffc, /* dst_mask */ | |
885 | FALSE), /* pcrel_offset */ | |
a06ea964 | 886 | |
87f5fbcc RL |
887 | /* LD64: GOT offset for the symbol. */ |
888 | HOWTO64 (AARCH64_R (LD64_GOTOFF_LO15), /* type */ | |
889 | 3, /* rightshift */ | |
890 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
891 | 12, /* bitsize */ | |
892 | FALSE, /* pc_relative */ | |
893 | 0, /* bitpos */ | |
894 | complain_overflow_unsigned, /* complain_on_overflow */ | |
895 | bfd_elf_generic_reloc, /* special_function */ | |
896 | AARCH64_R_STR (LD64_GOTOFF_LO15), /* name */ | |
897 | FALSE, /* partial_inplace */ | |
898 | 0x7ff8, /* src_mask */ | |
899 | 0x7ff8, /* dst_mask */ | |
900 | FALSE), /* pcrel_offset */ | |
901 | ||
3d715ce4 JW |
902 | /* LD32: GOT offset to the page address of GOT table. |
903 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x5ffc. */ | |
904 | HOWTO32 (AARCH64_R (LD32_GOTPAGE_LO14), /* type */ | |
905 | 2, /* rightshift */ | |
906 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
907 | 12, /* bitsize */ | |
908 | FALSE, /* pc_relative */ | |
909 | 0, /* bitpos */ | |
910 | complain_overflow_unsigned, /* complain_on_overflow */ | |
911 | bfd_elf_generic_reloc, /* special_function */ | |
912 | AARCH64_R_STR (LD32_GOTPAGE_LO14), /* name */ | |
913 | FALSE, /* partial_inplace */ | |
914 | 0x5ffc, /* src_mask */ | |
915 | 0x5ffc, /* dst_mask */ | |
916 | FALSE), /* pcrel_offset */ | |
917 | ||
a921b5bd JW |
918 | /* LD64: GOT offset to the page address of GOT table. |
919 | (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */ | |
920 | HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15), /* type */ | |
921 | 3, /* rightshift */ | |
922 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
923 | 12, /* bitsize */ | |
924 | FALSE, /* pc_relative */ | |
925 | 0, /* bitpos */ | |
926 | complain_overflow_unsigned, /* complain_on_overflow */ | |
927 | bfd_elf_generic_reloc, /* special_function */ | |
928 | AARCH64_R_STR (LD64_GOTPAGE_LO15), /* name */ | |
929 | FALSE, /* partial_inplace */ | |
930 | 0x7ff8, /* src_mask */ | |
931 | 0x7ff8, /* dst_mask */ | |
932 | FALSE), /* pcrel_offset */ | |
933 | ||
a06ea964 NC |
934 | /* Get to the page for the GOT entry for the symbol |
935 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 936 | HOWTO (AARCH64_R (TLSGD_ADR_PAGE21), /* type */ |
a06ea964 NC |
937 | 12, /* rightshift */ |
938 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
939 | 21, /* bitsize */ | |
940 | TRUE, /* pc_relative */ | |
941 | 0, /* bitpos */ | |
942 | complain_overflow_dont, /* complain_on_overflow */ | |
943 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 944 | AARCH64_R_STR (TLSGD_ADR_PAGE21), /* name */ |
a06ea964 NC |
945 | FALSE, /* partial_inplace */ |
946 | 0x1fffff, /* src_mask */ | |
947 | 0x1fffff, /* dst_mask */ | |
948 | TRUE), /* pcrel_offset */ | |
949 | ||
3c12b054 MS |
950 | HOWTO (AARCH64_R (TLSGD_ADR_PREL21), /* type */ |
951 | 0, /* rightshift */ | |
952 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
953 | 21, /* bitsize */ | |
954 | TRUE, /* pc_relative */ | |
955 | 0, /* bitpos */ | |
956 | complain_overflow_dont, /* complain_on_overflow */ | |
957 | bfd_elf_generic_reloc, /* special_function */ | |
958 | AARCH64_R_STR (TLSGD_ADR_PREL21), /* name */ | |
959 | FALSE, /* partial_inplace */ | |
960 | 0x1fffff, /* src_mask */ | |
961 | 0x1fffff, /* dst_mask */ | |
962 | TRUE), /* pcrel_offset */ | |
963 | ||
a06ea964 | 964 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ |
a6bb11b2 | 965 | HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC), /* type */ |
a06ea964 NC |
966 | 0, /* rightshift */ |
967 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
968 | 12, /* bitsize */ | |
969 | FALSE, /* pc_relative */ | |
970 | 0, /* bitpos */ | |
971 | complain_overflow_dont, /* complain_on_overflow */ | |
972 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 973 | AARCH64_R_STR (TLSGD_ADD_LO12_NC), /* name */ |
a06ea964 NC |
974 | FALSE, /* partial_inplace */ |
975 | 0xfff, /* src_mask */ | |
976 | 0xfff, /* dst_mask */ | |
977 | FALSE), /* pcrel_offset */ | |
978 | ||
a6bb11b2 | 979 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1), /* type */ |
a06ea964 NC |
980 | 16, /* rightshift */ |
981 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
982 | 16, /* bitsize */ | |
983 | FALSE, /* pc_relative */ | |
984 | 0, /* bitpos */ | |
985 | complain_overflow_dont, /* complain_on_overflow */ | |
986 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 987 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1), /* name */ |
a06ea964 NC |
988 | FALSE, /* partial_inplace */ |
989 | 0xffff, /* src_mask */ | |
990 | 0xffff, /* dst_mask */ | |
991 | FALSE), /* pcrel_offset */ | |
992 | ||
a6bb11b2 | 993 | HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */ |
a06ea964 NC |
994 | 0, /* rightshift */ |
995 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
49d8f92c | 996 | 16, /* bitsize */ |
a06ea964 NC |
997 | FALSE, /* pc_relative */ |
998 | 0, /* bitpos */ | |
999 | complain_overflow_dont, /* complain_on_overflow */ | |
1000 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1001 | AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC), /* name */ |
a06ea964 NC |
1002 | FALSE, /* partial_inplace */ |
1003 | 0xffff, /* src_mask */ | |
1004 | 0xffff, /* dst_mask */ | |
1005 | FALSE), /* pcrel_offset */ | |
1006 | ||
a6bb11b2 | 1007 | HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21), /* type */ |
a06ea964 NC |
1008 | 12, /* rightshift */ |
1009 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1010 | 21, /* bitsize */ | |
1011 | FALSE, /* pc_relative */ | |
1012 | 0, /* bitpos */ | |
1013 | complain_overflow_dont, /* complain_on_overflow */ | |
1014 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1015 | AARCH64_R_STR (TLSIE_ADR_GOTTPREL_PAGE21), /* name */ |
a06ea964 NC |
1016 | FALSE, /* partial_inplace */ |
1017 | 0x1fffff, /* src_mask */ | |
1018 | 0x1fffff, /* dst_mask */ | |
1019 | FALSE), /* pcrel_offset */ | |
1020 | ||
a6bb11b2 | 1021 | HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC), /* type */ |
a06ea964 NC |
1022 | 3, /* rightshift */ |
1023 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1024 | 12, /* bitsize */ | |
1025 | FALSE, /* pc_relative */ | |
1026 | 0, /* bitpos */ | |
1027 | complain_overflow_dont, /* complain_on_overflow */ | |
1028 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1029 | AARCH64_R_STR (TLSIE_LD64_GOTTPREL_LO12_NC), /* name */ |
a06ea964 NC |
1030 | FALSE, /* partial_inplace */ |
1031 | 0xff8, /* src_mask */ | |
1032 | 0xff8, /* dst_mask */ | |
1033 | FALSE), /* pcrel_offset */ | |
1034 | ||
a6bb11b2 YZ |
1035 | HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC), /* type */ |
1036 | 2, /* rightshift */ | |
1037 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1038 | 12, /* bitsize */ | |
1039 | FALSE, /* pc_relative */ | |
1040 | 0, /* bitpos */ | |
1041 | complain_overflow_dont, /* complain_on_overflow */ | |
1042 | bfd_elf_generic_reloc, /* special_function */ | |
1043 | AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC), /* name */ | |
1044 | FALSE, /* partial_inplace */ | |
1045 | 0xffc, /* src_mask */ | |
1046 | 0xffc, /* dst_mask */ | |
1047 | FALSE), /* pcrel_offset */ | |
1048 | ||
1049 | HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19), /* type */ | |
bb3f9ed8 | 1050 | 2, /* rightshift */ |
a06ea964 | 1051 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
043bf05a | 1052 | 19, /* bitsize */ |
a06ea964 NC |
1053 | FALSE, /* pc_relative */ |
1054 | 0, /* bitpos */ | |
1055 | complain_overflow_dont, /* complain_on_overflow */ | |
1056 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1057 | AARCH64_R_STR (TLSIE_LD_GOTTPREL_PREL19), /* name */ |
a06ea964 NC |
1058 | FALSE, /* partial_inplace */ |
1059 | 0x1ffffc, /* src_mask */ | |
1060 | 0x1ffffc, /* dst_mask */ | |
1061 | FALSE), /* pcrel_offset */ | |
1062 | ||
49df5539 JW |
1063 | /* ADD: bit[23:12] of byte offset to module TLS base address. */ |
1064 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_HI12), /* type */ | |
1065 | 12, /* rightshift */ | |
1066 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1067 | 12, /* bitsize */ | |
1068 | FALSE, /* pc_relative */ | |
1069 | 0, /* bitpos */ | |
1070 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1071 | bfd_elf_generic_reloc, /* special_function */ | |
1072 | AARCH64_R_STR (TLSLD_ADD_DTPREL_HI12), /* name */ | |
1073 | FALSE, /* partial_inplace */ | |
1074 | 0xfff, /* src_mask */ | |
1075 | 0xfff, /* dst_mask */ | |
1076 | FALSE), /* pcrel_offset */ | |
1077 | ||
70151fb5 JW |
1078 | /* Unsigned 12 bit byte offset to module TLS base address. */ |
1079 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12), /* type */ | |
1080 | 0, /* rightshift */ | |
1081 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1082 | 12, /* bitsize */ | |
1083 | FALSE, /* pc_relative */ | |
1084 | 0, /* bitpos */ | |
1085 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1086 | bfd_elf_generic_reloc, /* special_function */ | |
1087 | AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12), /* name */ | |
1088 | FALSE, /* partial_inplace */ | |
1089 | 0xfff, /* src_mask */ | |
1090 | 0xfff, /* dst_mask */ | |
1091 | FALSE), /* pcrel_offset */ | |
13289c10 JW |
1092 | |
1093 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12. */ | |
1094 | HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12_NC), /* type */ | |
1095 | 0, /* rightshift */ | |
1096 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1097 | 12, /* bitsize */ | |
1098 | FALSE, /* pc_relative */ | |
1099 | 0, /* bitpos */ | |
1100 | complain_overflow_dont, /* complain_on_overflow */ | |
1101 | bfd_elf_generic_reloc, /* special_function */ | |
1102 | AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12_NC), /* name */ | |
1103 | FALSE, /* partial_inplace */ | |
1104 | 0xfff, /* src_mask */ | |
1105 | 0xfff, /* dst_mask */ | |
1106 | FALSE), /* pcrel_offset */ | |
70151fb5 | 1107 | |
a12fad50 JW |
1108 | /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */ |
1109 | HOWTO (AARCH64_R (TLSLD_ADD_LO12_NC), /* type */ | |
1110 | 0, /* rightshift */ | |
1111 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1112 | 12, /* bitsize */ | |
1113 | FALSE, /* pc_relative */ | |
1114 | 0, /* bitpos */ | |
1115 | complain_overflow_dont, /* complain_on_overflow */ | |
1116 | bfd_elf_generic_reloc, /* special_function */ | |
1117 | AARCH64_R_STR (TLSLD_ADD_LO12_NC), /* name */ | |
1118 | FALSE, /* partial_inplace */ | |
1119 | 0xfff, /* src_mask */ | |
1120 | 0xfff, /* dst_mask */ | |
1121 | FALSE), /* pcrel_offset */ | |
1122 | ||
1107e076 JW |
1123 | /* Get to the page for the GOT entry for the symbol |
1124 | (G(S) - P) using an ADRP instruction. */ | |
1125 | HOWTO (AARCH64_R (TLSLD_ADR_PAGE21), /* type */ | |
1126 | 12, /* rightshift */ | |
1127 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1128 | 21, /* bitsize */ | |
1129 | TRUE, /* pc_relative */ | |
1130 | 0, /* bitpos */ | |
1131 | complain_overflow_signed, /* complain_on_overflow */ | |
1132 | bfd_elf_generic_reloc, /* special_function */ | |
1133 | AARCH64_R_STR (TLSLD_ADR_PAGE21), /* name */ | |
1134 | FALSE, /* partial_inplace */ | |
1135 | 0x1fffff, /* src_mask */ | |
1136 | 0x1fffff, /* dst_mask */ | |
1137 | TRUE), /* pcrel_offset */ | |
1138 | ||
6c37fedc JW |
1139 | HOWTO (AARCH64_R (TLSLD_ADR_PREL21), /* type */ |
1140 | 0, /* rightshift */ | |
1141 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1142 | 21, /* bitsize */ | |
1143 | TRUE, /* pc_relative */ | |
1144 | 0, /* bitpos */ | |
1145 | complain_overflow_signed, /* complain_on_overflow */ | |
1146 | bfd_elf_generic_reloc, /* special_function */ | |
1147 | AARCH64_R_STR (TLSLD_ADR_PREL21), /* name */ | |
1148 | FALSE, /* partial_inplace */ | |
1149 | 0x1fffff, /* src_mask */ | |
1150 | 0x1fffff, /* dst_mask */ | |
1151 | TRUE), /* pcrel_offset */ | |
1152 | ||
4c562523 JW |
1153 | /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */ |
1154 | HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12), /* type */ | |
1155 | 1, /* rightshift */ | |
1156 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1157 | 11, /* bitsize */ | |
1158 | FALSE, /* pc_relative */ | |
1159 | 10, /* bitpos */ | |
1160 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1161 | bfd_elf_generic_reloc, /* special_function */ | |
1162 | AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12), /* name */ | |
1163 | FALSE, /* partial_inplace */ | |
1164 | 0x1ffc00, /* src_mask */ | |
1165 | 0x1ffc00, /* dst_mask */ | |
1166 | FALSE), /* pcrel_offset */ | |
1167 | ||
1168 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12, but no overflow check. */ | |
1169 | HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12_NC), /* type */ | |
1170 | 1, /* rightshift */ | |
1171 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1172 | 11, /* bitsize */ | |
1173 | FALSE, /* pc_relative */ | |
1174 | 10, /* bitpos */ | |
1175 | complain_overflow_dont, /* complain_on_overflow */ | |
1176 | bfd_elf_generic_reloc, /* special_function */ | |
1177 | AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12_NC), /* name */ | |
1178 | FALSE, /* partial_inplace */ | |
1179 | 0x1ffc00, /* src_mask */ | |
1180 | 0x1ffc00, /* dst_mask */ | |
1181 | FALSE), /* pcrel_offset */ | |
1182 | ||
1183 | /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */ | |
1184 | HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12), /* type */ | |
1185 | 2, /* rightshift */ | |
1186 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1187 | 10, /* bitsize */ | |
1188 | FALSE, /* pc_relative */ | |
1189 | 10, /* bitpos */ | |
1190 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1191 | bfd_elf_generic_reloc, /* special_function */ | |
1192 | AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12), /* name */ | |
1193 | FALSE, /* partial_inplace */ | |
1194 | 0x3ffc00, /* src_mask */ | |
1195 | 0x3ffc00, /* dst_mask */ | |
1196 | FALSE), /* pcrel_offset */ | |
1197 | ||
1198 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12, but no overflow check. */ | |
1199 | HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12_NC), /* type */ | |
1200 | 2, /* rightshift */ | |
1201 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1202 | 10, /* bitsize */ | |
1203 | FALSE, /* pc_relative */ | |
1204 | 10, /* bitpos */ | |
1205 | complain_overflow_dont, /* complain_on_overflow */ | |
1206 | bfd_elf_generic_reloc, /* special_function */ | |
1207 | AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12_NC), /* name */ | |
1208 | FALSE, /* partial_inplace */ | |
1209 | 0xffc00, /* src_mask */ | |
1210 | 0xffc00, /* dst_mask */ | |
1211 | FALSE), /* pcrel_offset */ | |
1212 | ||
1213 | /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */ | |
1214 | HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12), /* type */ | |
1215 | 3, /* rightshift */ | |
1216 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1217 | 9, /* bitsize */ | |
1218 | FALSE, /* pc_relative */ | |
1219 | 10, /* bitpos */ | |
1220 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1221 | bfd_elf_generic_reloc, /* special_function */ | |
1222 | AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12), /* name */ | |
1223 | FALSE, /* partial_inplace */ | |
1224 | 0x3ffc00, /* src_mask */ | |
1225 | 0x3ffc00, /* dst_mask */ | |
1226 | FALSE), /* pcrel_offset */ | |
1227 | ||
1228 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12, but no overflow check. */ | |
1229 | HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12_NC), /* type */ | |
1230 | 3, /* rightshift */ | |
1231 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1232 | 9, /* bitsize */ | |
1233 | FALSE, /* pc_relative */ | |
1234 | 10, /* bitpos */ | |
1235 | complain_overflow_dont, /* complain_on_overflow */ | |
1236 | bfd_elf_generic_reloc, /* special_function */ | |
1237 | AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12_NC), /* name */ | |
1238 | FALSE, /* partial_inplace */ | |
1239 | 0x7fc00, /* src_mask */ | |
1240 | 0x7fc00, /* dst_mask */ | |
1241 | FALSE), /* pcrel_offset */ | |
1242 | ||
1243 | /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */ | |
1244 | HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12), /* type */ | |
1245 | 0, /* rightshift */ | |
1246 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1247 | 12, /* bitsize */ | |
1248 | FALSE, /* pc_relative */ | |
1249 | 10, /* bitpos */ | |
1250 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1251 | bfd_elf_generic_reloc, /* special_function */ | |
1252 | AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12), /* name */ | |
1253 | FALSE, /* partial_inplace */ | |
1254 | 0x3ffc00, /* src_mask */ | |
1255 | 0x3ffc00, /* dst_mask */ | |
1256 | FALSE), /* pcrel_offset */ | |
1257 | ||
1258 | /* Same as BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12, but no overflow check. */ | |
1259 | HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12_NC), /* type */ | |
1260 | 0, /* rightshift */ | |
1261 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1262 | 12, /* bitsize */ | |
1263 | FALSE, /* pc_relative */ | |
1264 | 10, /* bitpos */ | |
1265 | complain_overflow_dont, /* complain_on_overflow */ | |
1266 | bfd_elf_generic_reloc, /* special_function */ | |
1267 | AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12_NC), /* name */ | |
1268 | FALSE, /* partial_inplace */ | |
1269 | 0x3ffc00, /* src_mask */ | |
1270 | 0x3ffc00, /* dst_mask */ | |
1271 | FALSE), /* pcrel_offset */ | |
1272 | ||
49df5539 JW |
1273 | /* MOVZ: bit[15:0] of byte offset to module TLS base address. */ |
1274 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0), /* type */ | |
1275 | 0, /* rightshift */ | |
1276 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1277 | 16, /* bitsize */ | |
1278 | FALSE, /* pc_relative */ | |
1279 | 0, /* bitpos */ | |
1280 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1281 | bfd_elf_generic_reloc, /* special_function */ | |
1282 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0), /* name */ | |
1283 | FALSE, /* partial_inplace */ | |
1284 | 0xffff, /* src_mask */ | |
1285 | 0xffff, /* dst_mask */ | |
1286 | FALSE), /* pcrel_offset */ | |
1287 | ||
1288 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0. */ | |
1289 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0_NC), /* type */ | |
1290 | 0, /* rightshift */ | |
1291 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1292 | 16, /* bitsize */ | |
1293 | FALSE, /* pc_relative */ | |
1294 | 0, /* bitpos */ | |
1295 | complain_overflow_dont, /* complain_on_overflow */ | |
1296 | bfd_elf_generic_reloc, /* special_function */ | |
1297 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0_NC), /* name */ | |
1298 | FALSE, /* partial_inplace */ | |
1299 | 0xffff, /* src_mask */ | |
1300 | 0xffff, /* dst_mask */ | |
1301 | FALSE), /* pcrel_offset */ | |
1302 | ||
1303 | /* MOVZ: bit[31:16] of byte offset to module TLS base address. */ | |
1304 | HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G1), /* type */ | |
1305 | 16, /* rightshift */ | |
1306 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1307 | 16, /* bitsize */ | |
1308 | FALSE, /* pc_relative */ | |
1309 | 0, /* bitpos */ | |
1310 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1311 | bfd_elf_generic_reloc, /* special_function */ | |
1312 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1), /* name */ | |
1313 | FALSE, /* partial_inplace */ | |
1314 | 0xffff, /* src_mask */ | |
1315 | 0xffff, /* dst_mask */ | |
1316 | FALSE), /* pcrel_offset */ | |
1317 | ||
1318 | /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1. */ | |
1319 | HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G1_NC), /* type */ | |
1320 | 16, /* rightshift */ | |
1321 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1322 | 16, /* bitsize */ | |
1323 | FALSE, /* pc_relative */ | |
1324 | 0, /* bitpos */ | |
1325 | complain_overflow_dont, /* complain_on_overflow */ | |
1326 | bfd_elf_generic_reloc, /* special_function */ | |
1327 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1_NC), /* name */ | |
1328 | FALSE, /* partial_inplace */ | |
1329 | 0xffff, /* src_mask */ | |
1330 | 0xffff, /* dst_mask */ | |
1331 | FALSE), /* pcrel_offset */ | |
1332 | ||
1333 | /* MOVZ: bit[47:32] of byte offset to module TLS base address. */ | |
1334 | HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G2), /* type */ | |
1335 | 32, /* rightshift */ | |
1336 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1337 | 16, /* bitsize */ | |
1338 | FALSE, /* pc_relative */ | |
1339 | 0, /* bitpos */ | |
1340 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1341 | bfd_elf_generic_reloc, /* special_function */ | |
1342 | AARCH64_R_STR (TLSLD_MOVW_DTPREL_G2), /* name */ | |
1343 | FALSE, /* partial_inplace */ | |
1344 | 0xffff, /* src_mask */ | |
1345 | 0xffff, /* dst_mask */ | |
1346 | FALSE), /* pcrel_offset */ | |
1347 | ||
a6bb11b2 | 1348 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2), /* type */ |
bb3f9ed8 | 1349 | 32, /* rightshift */ |
a06ea964 | 1350 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1351 | 16, /* bitsize */ |
a06ea964 NC |
1352 | FALSE, /* pc_relative */ |
1353 | 0, /* bitpos */ | |
0172429c | 1354 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1355 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1356 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G2), /* name */ |
a06ea964 NC |
1357 | FALSE, /* partial_inplace */ |
1358 | 0xffff, /* src_mask */ | |
1359 | 0xffff, /* dst_mask */ | |
1360 | FALSE), /* pcrel_offset */ | |
1361 | ||
a6bb11b2 | 1362 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1), /* type */ |
bb3f9ed8 | 1363 | 16, /* rightshift */ |
a06ea964 | 1364 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1365 | 16, /* bitsize */ |
a06ea964 NC |
1366 | FALSE, /* pc_relative */ |
1367 | 0, /* bitpos */ | |
1368 | complain_overflow_dont, /* complain_on_overflow */ | |
1369 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1370 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1), /* name */ |
a06ea964 NC |
1371 | FALSE, /* partial_inplace */ |
1372 | 0xffff, /* src_mask */ | |
1373 | 0xffff, /* dst_mask */ | |
1374 | FALSE), /* pcrel_offset */ | |
1375 | ||
a6bb11b2 | 1376 | HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */ |
bb3f9ed8 | 1377 | 16, /* rightshift */ |
a06ea964 | 1378 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
07875fbc | 1379 | 16, /* bitsize */ |
a06ea964 NC |
1380 | FALSE, /* pc_relative */ |
1381 | 0, /* bitpos */ | |
1382 | complain_overflow_dont, /* complain_on_overflow */ | |
1383 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1384 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC), /* name */ |
a06ea964 NC |
1385 | FALSE, /* partial_inplace */ |
1386 | 0xffff, /* src_mask */ | |
1387 | 0xffff, /* dst_mask */ | |
1388 | FALSE), /* pcrel_offset */ | |
1389 | ||
a6bb11b2 | 1390 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0), /* type */ |
a06ea964 NC |
1391 | 0, /* rightshift */ |
1392 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
07875fbc | 1393 | 16, /* bitsize */ |
a06ea964 NC |
1394 | FALSE, /* pc_relative */ |
1395 | 0, /* bitpos */ | |
1396 | complain_overflow_dont, /* complain_on_overflow */ | |
1397 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1398 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0), /* name */ |
a06ea964 NC |
1399 | FALSE, /* partial_inplace */ |
1400 | 0xffff, /* src_mask */ | |
1401 | 0xffff, /* dst_mask */ | |
1402 | FALSE), /* pcrel_offset */ | |
1403 | ||
a6bb11b2 | 1404 | HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC), /* type */ |
a06ea964 NC |
1405 | 0, /* rightshift */ |
1406 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
07875fbc | 1407 | 16, /* bitsize */ |
a06ea964 NC |
1408 | FALSE, /* pc_relative */ |
1409 | 0, /* bitpos */ | |
1410 | complain_overflow_dont, /* complain_on_overflow */ | |
1411 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1412 | AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC), /* name */ |
a06ea964 NC |
1413 | FALSE, /* partial_inplace */ |
1414 | 0xffff, /* src_mask */ | |
1415 | 0xffff, /* dst_mask */ | |
1416 | FALSE), /* pcrel_offset */ | |
1417 | ||
a6bb11b2 | 1418 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12), /* type */ |
bb3f9ed8 | 1419 | 12, /* rightshift */ |
a06ea964 NC |
1420 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1421 | 12, /* bitsize */ | |
1422 | FALSE, /* pc_relative */ | |
1423 | 0, /* bitpos */ | |
bab91cce | 1424 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1425 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1426 | AARCH64_R_STR (TLSLE_ADD_TPREL_HI12), /* name */ |
a06ea964 NC |
1427 | FALSE, /* partial_inplace */ |
1428 | 0xfff, /* src_mask */ | |
1429 | 0xfff, /* dst_mask */ | |
1430 | FALSE), /* pcrel_offset */ | |
1431 | ||
a6bb11b2 | 1432 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12), /* type */ |
a06ea964 NC |
1433 | 0, /* rightshift */ |
1434 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1435 | 12, /* bitsize */ | |
1436 | FALSE, /* pc_relative */ | |
1437 | 0, /* bitpos */ | |
36e6c140 | 1438 | complain_overflow_unsigned, /* complain_on_overflow */ |
a06ea964 | 1439 | bfd_elf_generic_reloc, /* special_function */ |
a6bb11b2 | 1440 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12), /* name */ |
a06ea964 NC |
1441 | FALSE, /* partial_inplace */ |
1442 | 0xfff, /* src_mask */ | |
1443 | 0xfff, /* dst_mask */ | |
1444 | FALSE), /* pcrel_offset */ | |
1445 | ||
a6bb11b2 | 1446 | HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC), /* type */ |
a06ea964 NC |
1447 | 0, /* rightshift */ |
1448 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1449 | 12, /* bitsize */ | |
1450 | FALSE, /* pc_relative */ | |
1451 | 0, /* bitpos */ | |
1452 | complain_overflow_dont, /* complain_on_overflow */ | |
1453 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1454 | AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC), /* name */ |
a06ea964 NC |
1455 | FALSE, /* partial_inplace */ |
1456 | 0xfff, /* src_mask */ | |
1457 | 0xfff, /* dst_mask */ | |
1458 | FALSE), /* pcrel_offset */ | |
a06ea964 | 1459 | |
a6bb11b2 | 1460 | HOWTO (AARCH64_R (TLSDESC_LD_PREL19), /* type */ |
bb3f9ed8 | 1461 | 2, /* rightshift */ |
a06ea964 | 1462 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1ada945d | 1463 | 19, /* bitsize */ |
a06ea964 NC |
1464 | TRUE, /* pc_relative */ |
1465 | 0, /* bitpos */ | |
1466 | complain_overflow_dont, /* complain_on_overflow */ | |
1467 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1468 | AARCH64_R_STR (TLSDESC_LD_PREL19), /* name */ |
a06ea964 | 1469 | FALSE, /* partial_inplace */ |
1ada945d MS |
1470 | 0x0ffffe0, /* src_mask */ |
1471 | 0x0ffffe0, /* dst_mask */ | |
a06ea964 NC |
1472 | TRUE), /* pcrel_offset */ |
1473 | ||
a6bb11b2 | 1474 | HOWTO (AARCH64_R (TLSDESC_ADR_PREL21), /* type */ |
a06ea964 NC |
1475 | 0, /* rightshift */ |
1476 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1477 | 21, /* bitsize */ | |
1478 | TRUE, /* pc_relative */ | |
1479 | 0, /* bitpos */ | |
1480 | complain_overflow_dont, /* complain_on_overflow */ | |
1481 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1482 | AARCH64_R_STR (TLSDESC_ADR_PREL21), /* name */ |
a06ea964 NC |
1483 | FALSE, /* partial_inplace */ |
1484 | 0x1fffff, /* src_mask */ | |
1485 | 0x1fffff, /* dst_mask */ | |
1486 | TRUE), /* pcrel_offset */ | |
1487 | ||
1488 | /* Get to the page for the GOT entry for the symbol | |
1489 | (G(S) - P) using an ADRP instruction. */ | |
a6bb11b2 | 1490 | HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21), /* type */ |
a06ea964 NC |
1491 | 12, /* rightshift */ |
1492 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1493 | 21, /* bitsize */ | |
1494 | TRUE, /* pc_relative */ | |
1495 | 0, /* bitpos */ | |
1496 | complain_overflow_dont, /* complain_on_overflow */ | |
1497 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1498 | AARCH64_R_STR (TLSDESC_ADR_PAGE21), /* name */ |
a06ea964 NC |
1499 | FALSE, /* partial_inplace */ |
1500 | 0x1fffff, /* src_mask */ | |
1501 | 0x1fffff, /* dst_mask */ | |
1502 | TRUE), /* pcrel_offset */ | |
1503 | ||
a6bb11b2 YZ |
1504 | /* LD64: GOT offset G(S) & 0xff8. */ |
1505 | HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12_NC), /* type */ | |
a06ea964 NC |
1506 | 3, /* rightshift */ |
1507 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1508 | 12, /* bitsize */ | |
1509 | FALSE, /* pc_relative */ | |
1510 | 0, /* bitpos */ | |
1511 | complain_overflow_dont, /* complain_on_overflow */ | |
1512 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1513 | AARCH64_R_STR (TLSDESC_LD64_LO12_NC), /* name */ |
a06ea964 | 1514 | FALSE, /* partial_inplace */ |
a6bb11b2 YZ |
1515 | 0xff8, /* src_mask */ |
1516 | 0xff8, /* dst_mask */ | |
1517 | FALSE), /* pcrel_offset */ | |
1518 | ||
1519 | /* LD32: GOT offset G(S) & 0xffc. */ | |
1520 | HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC), /* type */ | |
1521 | 2, /* rightshift */ | |
1522 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1523 | 12, /* bitsize */ | |
1524 | FALSE, /* pc_relative */ | |
1525 | 0, /* bitpos */ | |
1526 | complain_overflow_dont, /* complain_on_overflow */ | |
1527 | bfd_elf_generic_reloc, /* special_function */ | |
1528 | AARCH64_R_STR (TLSDESC_LD32_LO12_NC), /* name */ | |
1529 | FALSE, /* partial_inplace */ | |
1530 | 0xffc, /* src_mask */ | |
1531 | 0xffc, /* dst_mask */ | |
a06ea964 NC |
1532 | FALSE), /* pcrel_offset */ |
1533 | ||
1534 | /* ADD: GOT offset G(S) & 0xfff. */ | |
a6bb11b2 | 1535 | HOWTO (AARCH64_R (TLSDESC_ADD_LO12_NC), /* type */ |
a06ea964 NC |
1536 | 0, /* rightshift */ |
1537 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1538 | 12, /* bitsize */ | |
1539 | FALSE, /* pc_relative */ | |
1540 | 0, /* bitpos */ | |
1541 | complain_overflow_dont, /* complain_on_overflow */ | |
1542 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1543 | AARCH64_R_STR (TLSDESC_ADD_LO12_NC), /* name */ |
a06ea964 NC |
1544 | FALSE, /* partial_inplace */ |
1545 | 0xfff, /* src_mask */ | |
1546 | 0xfff, /* dst_mask */ | |
1547 | FALSE), /* pcrel_offset */ | |
1548 | ||
a6bb11b2 | 1549 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G1), /* type */ |
bb3f9ed8 | 1550 | 16, /* rightshift */ |
a06ea964 NC |
1551 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
1552 | 12, /* bitsize */ | |
1553 | FALSE, /* pc_relative */ | |
1554 | 0, /* bitpos */ | |
1555 | complain_overflow_dont, /* complain_on_overflow */ | |
1556 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1557 | AARCH64_R_STR (TLSDESC_OFF_G1), /* name */ |
a06ea964 NC |
1558 | FALSE, /* partial_inplace */ |
1559 | 0xffff, /* src_mask */ | |
1560 | 0xffff, /* dst_mask */ | |
1561 | FALSE), /* pcrel_offset */ | |
1562 | ||
a6bb11b2 | 1563 | HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC), /* type */ |
a06ea964 NC |
1564 | 0, /* rightshift */ |
1565 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1566 | 12, /* bitsize */ | |
1567 | FALSE, /* pc_relative */ | |
1568 | 0, /* bitpos */ | |
1569 | complain_overflow_dont, /* complain_on_overflow */ | |
1570 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1571 | AARCH64_R_STR (TLSDESC_OFF_G0_NC), /* name */ |
a06ea964 NC |
1572 | FALSE, /* partial_inplace */ |
1573 | 0xffff, /* src_mask */ | |
1574 | 0xffff, /* dst_mask */ | |
1575 | FALSE), /* pcrel_offset */ | |
1576 | ||
a6bb11b2 | 1577 | HOWTO64 (AARCH64_R (TLSDESC_LDR), /* type */ |
a06ea964 NC |
1578 | 0, /* rightshift */ |
1579 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1580 | 12, /* bitsize */ | |
1581 | FALSE, /* pc_relative */ | |
1582 | 0, /* bitpos */ | |
1583 | complain_overflow_dont, /* complain_on_overflow */ | |
1584 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1585 | AARCH64_R_STR (TLSDESC_LDR), /* name */ |
a06ea964 NC |
1586 | FALSE, /* partial_inplace */ |
1587 | 0x0, /* src_mask */ | |
1588 | 0x0, /* dst_mask */ | |
1589 | FALSE), /* pcrel_offset */ | |
1590 | ||
a6bb11b2 | 1591 | HOWTO64 (AARCH64_R (TLSDESC_ADD), /* type */ |
a06ea964 NC |
1592 | 0, /* rightshift */ |
1593 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1594 | 12, /* bitsize */ | |
1595 | FALSE, /* pc_relative */ | |
1596 | 0, /* bitpos */ | |
1597 | complain_overflow_dont, /* complain_on_overflow */ | |
1598 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1599 | AARCH64_R_STR (TLSDESC_ADD), /* name */ |
a06ea964 NC |
1600 | FALSE, /* partial_inplace */ |
1601 | 0x0, /* src_mask */ | |
1602 | 0x0, /* dst_mask */ | |
1603 | FALSE), /* pcrel_offset */ | |
1604 | ||
a6bb11b2 | 1605 | HOWTO (AARCH64_R (TLSDESC_CALL), /* type */ |
a06ea964 NC |
1606 | 0, /* rightshift */ |
1607 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
7366006f | 1608 | 0, /* bitsize */ |
a06ea964 NC |
1609 | FALSE, /* pc_relative */ |
1610 | 0, /* bitpos */ | |
1611 | complain_overflow_dont, /* complain_on_overflow */ | |
1612 | bfd_elf_generic_reloc, /* special_function */ | |
a6bb11b2 | 1613 | AARCH64_R_STR (TLSDESC_CALL), /* name */ |
a06ea964 NC |
1614 | FALSE, /* partial_inplace */ |
1615 | 0x0, /* src_mask */ | |
1616 | 0x0, /* dst_mask */ | |
1617 | FALSE), /* pcrel_offset */ | |
a6bb11b2 YZ |
1618 | |
1619 | HOWTO (AARCH64_R (COPY), /* type */ | |
1620 | 0, /* rightshift */ | |
1621 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1622 | 64, /* bitsize */ | |
1623 | FALSE, /* pc_relative */ | |
1624 | 0, /* bitpos */ | |
1625 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1626 | bfd_elf_generic_reloc, /* special_function */ | |
1627 | AARCH64_R_STR (COPY), /* name */ | |
1628 | TRUE, /* partial_inplace */ | |
1629 | 0xffffffff, /* src_mask */ | |
1630 | 0xffffffff, /* dst_mask */ | |
1631 | FALSE), /* pcrel_offset */ | |
1632 | ||
1633 | HOWTO (AARCH64_R (GLOB_DAT), /* type */ | |
1634 | 0, /* rightshift */ | |
1635 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1636 | 64, /* bitsize */ | |
1637 | FALSE, /* pc_relative */ | |
1638 | 0, /* bitpos */ | |
1639 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1640 | bfd_elf_generic_reloc, /* special_function */ | |
1641 | AARCH64_R_STR (GLOB_DAT), /* name */ | |
1642 | TRUE, /* partial_inplace */ | |
1643 | 0xffffffff, /* src_mask */ | |
1644 | 0xffffffff, /* dst_mask */ | |
1645 | FALSE), /* pcrel_offset */ | |
1646 | ||
1647 | HOWTO (AARCH64_R (JUMP_SLOT), /* type */ | |
1648 | 0, /* rightshift */ | |
1649 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1650 | 64, /* bitsize */ | |
1651 | FALSE, /* pc_relative */ | |
1652 | 0, /* bitpos */ | |
1653 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1654 | bfd_elf_generic_reloc, /* special_function */ | |
1655 | AARCH64_R_STR (JUMP_SLOT), /* name */ | |
1656 | TRUE, /* partial_inplace */ | |
1657 | 0xffffffff, /* src_mask */ | |
1658 | 0xffffffff, /* dst_mask */ | |
1659 | FALSE), /* pcrel_offset */ | |
1660 | ||
1661 | HOWTO (AARCH64_R (RELATIVE), /* type */ | |
1662 | 0, /* rightshift */ | |
1663 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1664 | 64, /* bitsize */ | |
1665 | FALSE, /* pc_relative */ | |
1666 | 0, /* bitpos */ | |
1667 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1668 | bfd_elf_generic_reloc, /* special_function */ | |
1669 | AARCH64_R_STR (RELATIVE), /* name */ | |
1670 | TRUE, /* partial_inplace */ | |
1671 | ALL_ONES, /* src_mask */ | |
1672 | ALL_ONES, /* dst_mask */ | |
1673 | FALSE), /* pcrel_offset */ | |
1674 | ||
1675 | HOWTO (AARCH64_R (TLS_DTPMOD), /* type */ | |
1676 | 0, /* rightshift */ | |
1677 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1678 | 64, /* bitsize */ | |
1679 | FALSE, /* pc_relative */ | |
1680 | 0, /* bitpos */ | |
1681 | complain_overflow_dont, /* complain_on_overflow */ | |
1682 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
1683 | #if ARCH_SIZE == 64 |
1684 | AARCH64_R_STR (TLS_DTPMOD64), /* name */ | |
1685 | #else | |
a6bb11b2 | 1686 | AARCH64_R_STR (TLS_DTPMOD), /* name */ |
da0781dc | 1687 | #endif |
a6bb11b2 YZ |
1688 | FALSE, /* partial_inplace */ |
1689 | 0, /* src_mask */ | |
1690 | ALL_ONES, /* dst_mask */ | |
1691 | FALSE), /* pc_reloffset */ | |
1692 | ||
1693 | HOWTO (AARCH64_R (TLS_DTPREL), /* type */ | |
1694 | 0, /* rightshift */ | |
1695 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1696 | 64, /* bitsize */ | |
1697 | FALSE, /* pc_relative */ | |
1698 | 0, /* bitpos */ | |
1699 | complain_overflow_dont, /* complain_on_overflow */ | |
1700 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
1701 | #if ARCH_SIZE == 64 |
1702 | AARCH64_R_STR (TLS_DTPREL64), /* name */ | |
1703 | #else | |
a6bb11b2 | 1704 | AARCH64_R_STR (TLS_DTPREL), /* name */ |
da0781dc | 1705 | #endif |
a6bb11b2 YZ |
1706 | FALSE, /* partial_inplace */ |
1707 | 0, /* src_mask */ | |
1708 | ALL_ONES, /* dst_mask */ | |
1709 | FALSE), /* pcrel_offset */ | |
1710 | ||
1711 | HOWTO (AARCH64_R (TLS_TPREL), /* type */ | |
1712 | 0, /* rightshift */ | |
1713 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1714 | 64, /* bitsize */ | |
1715 | FALSE, /* pc_relative */ | |
1716 | 0, /* bitpos */ | |
1717 | complain_overflow_dont, /* complain_on_overflow */ | |
1718 | bfd_elf_generic_reloc, /* special_function */ | |
da0781dc YZ |
1719 | #if ARCH_SIZE == 64 |
1720 | AARCH64_R_STR (TLS_TPREL64), /* name */ | |
1721 | #else | |
a6bb11b2 | 1722 | AARCH64_R_STR (TLS_TPREL), /* name */ |
da0781dc | 1723 | #endif |
a6bb11b2 YZ |
1724 | FALSE, /* partial_inplace */ |
1725 | 0, /* src_mask */ | |
1726 | ALL_ONES, /* dst_mask */ | |
1727 | FALSE), /* pcrel_offset */ | |
1728 | ||
1729 | HOWTO (AARCH64_R (TLSDESC), /* type */ | |
1730 | 0, /* rightshift */ | |
1731 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1732 | 64, /* bitsize */ | |
1733 | FALSE, /* pc_relative */ | |
1734 | 0, /* bitpos */ | |
1735 | complain_overflow_dont, /* complain_on_overflow */ | |
1736 | bfd_elf_generic_reloc, /* special_function */ | |
1737 | AARCH64_R_STR (TLSDESC), /* name */ | |
1738 | FALSE, /* partial_inplace */ | |
1739 | 0, /* src_mask */ | |
1740 | ALL_ONES, /* dst_mask */ | |
1741 | FALSE), /* pcrel_offset */ | |
1742 | ||
1743 | HOWTO (AARCH64_R (IRELATIVE), /* type */ | |
1744 | 0, /* rightshift */ | |
1745 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1746 | 64, /* bitsize */ | |
1747 | FALSE, /* pc_relative */ | |
1748 | 0, /* bitpos */ | |
1749 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1750 | bfd_elf_generic_reloc, /* special_function */ | |
1751 | AARCH64_R_STR (IRELATIVE), /* name */ | |
1752 | FALSE, /* partial_inplace */ | |
1753 | 0, /* src_mask */ | |
1754 | ALL_ONES, /* dst_mask */ | |
1755 | FALSE), /* pcrel_offset */ | |
1756 | ||
1757 | EMPTY_HOWTO (0), | |
a06ea964 NC |
1758 | }; |
1759 | ||
a6bb11b2 YZ |
1760 | static reloc_howto_type elfNN_aarch64_howto_none = |
1761 | HOWTO (R_AARCH64_NONE, /* type */ | |
1762 | 0, /* rightshift */ | |
6346d5ca | 1763 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
a6bb11b2 YZ |
1764 | 0, /* bitsize */ |
1765 | FALSE, /* pc_relative */ | |
1766 | 0, /* bitpos */ | |
1767 | complain_overflow_dont,/* complain_on_overflow */ | |
1768 | bfd_elf_generic_reloc, /* special_function */ | |
1769 | "R_AARCH64_NONE", /* name */ | |
1770 | FALSE, /* partial_inplace */ | |
1771 | 0, /* src_mask */ | |
1772 | 0, /* dst_mask */ | |
1773 | FALSE); /* pcrel_offset */ | |
1774 | ||
1775 | /* Given HOWTO, return the bfd internal relocation enumerator. */ | |
1776 | ||
1777 | static bfd_reloc_code_real_type | |
1778 | elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type *howto) | |
1779 | { | |
1780 | const int size | |
1781 | = (int) ARRAY_SIZE (elfNN_aarch64_howto_table); | |
1782 | const ptrdiff_t offset | |
1783 | = howto - elfNN_aarch64_howto_table; | |
1784 | ||
1785 | if (offset > 0 && offset < size - 1) | |
1786 | return BFD_RELOC_AARCH64_RELOC_START + offset; | |
1787 | ||
1788 | if (howto == &elfNN_aarch64_howto_none) | |
1789 | return BFD_RELOC_AARCH64_NONE; | |
1790 | ||
1791 | return BFD_RELOC_AARCH64_RELOC_START; | |
1792 | } | |
1793 | ||
1794 | /* Given R_TYPE, return the bfd internal relocation enumerator. */ | |
1795 | ||
1796 | static bfd_reloc_code_real_type | |
1797 | elfNN_aarch64_bfd_reloc_from_type (unsigned int r_type) | |
1798 | { | |
1799 | static bfd_boolean initialized_p = FALSE; | |
1800 | /* Indexed by R_TYPE, values are offsets in the howto_table. */ | |
1801 | static unsigned int offsets[R_AARCH64_end]; | |
1802 | ||
1803 | if (initialized_p == FALSE) | |
1804 | { | |
1805 | unsigned int i; | |
1806 | ||
1807 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) | |
1808 | if (elfNN_aarch64_howto_table[i].type != 0) | |
1809 | offsets[elfNN_aarch64_howto_table[i].type] = i; | |
1810 | ||
1811 | initialized_p = TRUE; | |
1812 | } | |
1813 | ||
1814 | if (r_type == R_AARCH64_NONE || r_type == R_AARCH64_NULL) | |
1815 | return BFD_RELOC_AARCH64_NONE; | |
1816 | ||
5860e3f8 NC |
1817 | /* PR 17512: file: b371e70a. */ |
1818 | if (r_type >= R_AARCH64_end) | |
1819 | { | |
1820 | _bfd_error_handler (_("Invalid AArch64 reloc number: %d"), r_type); | |
1821 | bfd_set_error (bfd_error_bad_value); | |
1822 | return BFD_RELOC_AARCH64_NONE; | |
1823 | } | |
1824 | ||
a6bb11b2 YZ |
1825 | return BFD_RELOC_AARCH64_RELOC_START + offsets[r_type]; |
1826 | } | |
1827 | ||
1828 | struct elf_aarch64_reloc_map | |
1829 | { | |
1830 | bfd_reloc_code_real_type from; | |
1831 | bfd_reloc_code_real_type to; | |
1832 | }; | |
1833 | ||
1834 | /* Map bfd generic reloc to AArch64-specific reloc. */ | |
1835 | static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map[] = | |
1836 | { | |
1837 | {BFD_RELOC_NONE, BFD_RELOC_AARCH64_NONE}, | |
1838 | ||
1839 | /* Basic data relocations. */ | |
1840 | {BFD_RELOC_CTOR, BFD_RELOC_AARCH64_NN}, | |
1841 | {BFD_RELOC_64, BFD_RELOC_AARCH64_64}, | |
1842 | {BFD_RELOC_32, BFD_RELOC_AARCH64_32}, | |
1843 | {BFD_RELOC_16, BFD_RELOC_AARCH64_16}, | |
1844 | {BFD_RELOC_64_PCREL, BFD_RELOC_AARCH64_64_PCREL}, | |
1845 | {BFD_RELOC_32_PCREL, BFD_RELOC_AARCH64_32_PCREL}, | |
1846 | {BFD_RELOC_16_PCREL, BFD_RELOC_AARCH64_16_PCREL}, | |
1847 | }; | |
1848 | ||
1849 | /* Given the bfd internal relocation enumerator in CODE, return the | |
1850 | corresponding howto entry. */ | |
1851 | ||
1852 | static reloc_howto_type * | |
1853 | elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code) | |
1854 | { | |
1855 | unsigned int i; | |
1856 | ||
1857 | /* Convert bfd generic reloc to AArch64-specific reloc. */ | |
1858 | if (code < BFD_RELOC_AARCH64_RELOC_START | |
1859 | || code > BFD_RELOC_AARCH64_RELOC_END) | |
1860 | for (i = 0; i < ARRAY_SIZE (elf_aarch64_reloc_map); i++) | |
1861 | if (elf_aarch64_reloc_map[i].from == code) | |
1862 | { | |
1863 | code = elf_aarch64_reloc_map[i].to; | |
1864 | break; | |
1865 | } | |
1866 | ||
1867 | if (code > BFD_RELOC_AARCH64_RELOC_START | |
1868 | && code < BFD_RELOC_AARCH64_RELOC_END) | |
1869 | if (elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START].type) | |
1870 | return &elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START]; | |
1871 | ||
54757ed1 AP |
1872 | if (code == BFD_RELOC_AARCH64_NONE) |
1873 | return &elfNN_aarch64_howto_none; | |
1874 | ||
a6bb11b2 YZ |
1875 | return NULL; |
1876 | } | |
1877 | ||
a06ea964 | 1878 | static reloc_howto_type * |
cec5225b | 1879 | elfNN_aarch64_howto_from_type (unsigned int r_type) |
a06ea964 | 1880 | { |
a6bb11b2 YZ |
1881 | bfd_reloc_code_real_type val; |
1882 | reloc_howto_type *howto; | |
1883 | ||
cec5225b YZ |
1884 | #if ARCH_SIZE == 32 |
1885 | if (r_type > 256) | |
1886 | { | |
1887 | bfd_set_error (bfd_error_bad_value); | |
1888 | return NULL; | |
1889 | } | |
1890 | #endif | |
1891 | ||
a6bb11b2 YZ |
1892 | if (r_type == R_AARCH64_NONE) |
1893 | return &elfNN_aarch64_howto_none; | |
a06ea964 | 1894 | |
a6bb11b2 YZ |
1895 | val = elfNN_aarch64_bfd_reloc_from_type (r_type); |
1896 | howto = elfNN_aarch64_howto_from_bfd_reloc (val); | |
a06ea964 | 1897 | |
a6bb11b2 YZ |
1898 | if (howto != NULL) |
1899 | return howto; | |
a06ea964 | 1900 | |
a06ea964 NC |
1901 | bfd_set_error (bfd_error_bad_value); |
1902 | return NULL; | |
1903 | } | |
1904 | ||
1905 | static void | |
cec5225b | 1906 | elfNN_aarch64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc, |
a06ea964 NC |
1907 | Elf_Internal_Rela *elf_reloc) |
1908 | { | |
1909 | unsigned int r_type; | |
1910 | ||
cec5225b YZ |
1911 | r_type = ELFNN_R_TYPE (elf_reloc->r_info); |
1912 | bfd_reloc->howto = elfNN_aarch64_howto_from_type (r_type); | |
a06ea964 NC |
1913 | } |
1914 | ||
a06ea964 | 1915 | static reloc_howto_type * |
cec5225b | 1916 | elfNN_aarch64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
1917 | bfd_reloc_code_real_type code) |
1918 | { | |
a6bb11b2 | 1919 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (code); |
a06ea964 | 1920 | |
a6bb11b2 YZ |
1921 | if (howto != NULL) |
1922 | return howto; | |
a06ea964 NC |
1923 | |
1924 | bfd_set_error (bfd_error_bad_value); | |
1925 | return NULL; | |
1926 | } | |
1927 | ||
1928 | static reloc_howto_type * | |
cec5225b | 1929 | elfNN_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
1930 | const char *r_name) |
1931 | { | |
1932 | unsigned int i; | |
1933 | ||
a6bb11b2 YZ |
1934 | for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i) |
1935 | if (elfNN_aarch64_howto_table[i].name != NULL | |
1936 | && strcasecmp (elfNN_aarch64_howto_table[i].name, r_name) == 0) | |
1937 | return &elfNN_aarch64_howto_table[i]; | |
a06ea964 NC |
1938 | |
1939 | return NULL; | |
1940 | } | |
1941 | ||
6d00b590 | 1942 | #define TARGET_LITTLE_SYM aarch64_elfNN_le_vec |
cec5225b | 1943 | #define TARGET_LITTLE_NAME "elfNN-littleaarch64" |
6d00b590 | 1944 | #define TARGET_BIG_SYM aarch64_elfNN_be_vec |
cec5225b | 1945 | #define TARGET_BIG_NAME "elfNN-bigaarch64" |
a06ea964 | 1946 | |
a06ea964 NC |
1947 | /* The linker script knows the section names for placement. |
1948 | The entry_names are used to do simple name mangling on the stubs. | |
1949 | Given a function name, and its type, the stub can be found. The | |
1950 | name can be changed. The only requirement is the %s be present. */ | |
1951 | #define STUB_ENTRY_NAME "__%s_veneer" | |
1952 | ||
1953 | /* The name of the dynamic interpreter. This is put in the .interp | |
1954 | section. */ | |
1955 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
1956 | ||
1957 | #define AARCH64_MAX_FWD_BRANCH_OFFSET \ | |
1958 | (((1 << 25) - 1) << 2) | |
1959 | #define AARCH64_MAX_BWD_BRANCH_OFFSET \ | |
1960 | (-((1 << 25) << 2)) | |
1961 | ||
1962 | #define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1) | |
1963 | #define AARCH64_MIN_ADRP_IMM (-(1 << 20)) | |
1964 | ||
1965 | static int | |
1966 | aarch64_valid_for_adrp_p (bfd_vma value, bfd_vma place) | |
1967 | { | |
1968 | bfd_signed_vma offset = (bfd_signed_vma) (PG (value) - PG (place)) >> 12; | |
1969 | return offset <= AARCH64_MAX_ADRP_IMM && offset >= AARCH64_MIN_ADRP_IMM; | |
1970 | } | |
1971 | ||
1972 | static int | |
1973 | aarch64_valid_branch_p (bfd_vma value, bfd_vma place) | |
1974 | { | |
1975 | bfd_signed_vma offset = (bfd_signed_vma) (value - place); | |
1976 | return (offset <= AARCH64_MAX_FWD_BRANCH_OFFSET | |
1977 | && offset >= AARCH64_MAX_BWD_BRANCH_OFFSET); | |
1978 | } | |
1979 | ||
1980 | static const uint32_t aarch64_adrp_branch_stub [] = | |
1981 | { | |
1982 | 0x90000010, /* adrp ip0, X */ | |
1983 | /* R_AARCH64_ADR_HI21_PCREL(X) */ | |
1984 | 0x91000210, /* add ip0, ip0, :lo12:X */ | |
1985 | /* R_AARCH64_ADD_ABS_LO12_NC(X) */ | |
1986 | 0xd61f0200, /* br ip0 */ | |
1987 | }; | |
1988 | ||
1989 | static const uint32_t aarch64_long_branch_stub[] = | |
1990 | { | |
cec5225b | 1991 | #if ARCH_SIZE == 64 |
a06ea964 | 1992 | 0x58000090, /* ldr ip0, 1f */ |
cec5225b YZ |
1993 | #else |
1994 | 0x18000090, /* ldr wip0, 1f */ | |
1995 | #endif | |
a06ea964 NC |
1996 | 0x10000011, /* adr ip1, #0 */ |
1997 | 0x8b110210, /* add ip0, ip0, ip1 */ | |
1998 | 0xd61f0200, /* br ip0 */ | |
cec5225b YZ |
1999 | 0x00000000, /* 1: .xword or .word |
2000 | R_AARCH64_PRELNN(X) + 12 | |
a06ea964 NC |
2001 | */ |
2002 | 0x00000000, | |
2003 | }; | |
2004 | ||
68fcca92 JW |
2005 | static const uint32_t aarch64_erratum_835769_stub[] = |
2006 | { | |
2007 | 0x00000000, /* Placeholder for multiply accumulate. */ | |
2008 | 0x14000000, /* b <label> */ | |
2009 | }; | |
2010 | ||
4106101c MS |
2011 | static const uint32_t aarch64_erratum_843419_stub[] = |
2012 | { | |
2013 | 0x00000000, /* Placeholder for LDR instruction. */ | |
2014 | 0x14000000, /* b <label> */ | |
2015 | }; | |
2016 | ||
a06ea964 NC |
2017 | /* Section name for stubs is the associated section name plus this |
2018 | string. */ | |
2019 | #define STUB_SUFFIX ".stub" | |
2020 | ||
cec5225b | 2021 | enum elf_aarch64_stub_type |
a06ea964 NC |
2022 | { |
2023 | aarch64_stub_none, | |
2024 | aarch64_stub_adrp_branch, | |
2025 | aarch64_stub_long_branch, | |
68fcca92 | 2026 | aarch64_stub_erratum_835769_veneer, |
4106101c | 2027 | aarch64_stub_erratum_843419_veneer, |
a06ea964 NC |
2028 | }; |
2029 | ||
cec5225b | 2030 | struct elf_aarch64_stub_hash_entry |
a06ea964 NC |
2031 | { |
2032 | /* Base hash table entry structure. */ | |
2033 | struct bfd_hash_entry root; | |
2034 | ||
2035 | /* The stub section. */ | |
2036 | asection *stub_sec; | |
2037 | ||
2038 | /* Offset within stub_sec of the beginning of this stub. */ | |
2039 | bfd_vma stub_offset; | |
2040 | ||
2041 | /* Given the symbol's value and its section we can determine its final | |
2042 | value when building the stubs (so the stub knows where to jump). */ | |
2043 | bfd_vma target_value; | |
2044 | asection *target_section; | |
2045 | ||
cec5225b | 2046 | enum elf_aarch64_stub_type stub_type; |
a06ea964 NC |
2047 | |
2048 | /* The symbol table entry, if any, that this was derived from. */ | |
cec5225b | 2049 | struct elf_aarch64_link_hash_entry *h; |
a06ea964 NC |
2050 | |
2051 | /* Destination symbol type */ | |
2052 | unsigned char st_type; | |
2053 | ||
2054 | /* Where this stub is being called from, or, in the case of combined | |
2055 | stub sections, the first input section in the group. */ | |
2056 | asection *id_sec; | |
2057 | ||
2058 | /* The name for the local symbol at the start of this stub. The | |
2059 | stub name in the hash table has to be unique; this does not, so | |
2060 | it can be friendlier. */ | |
2061 | char *output_name; | |
68fcca92 JW |
2062 | |
2063 | /* The instruction which caused this stub to be generated (only valid for | |
2064 | erratum 835769 workaround stubs at present). */ | |
2065 | uint32_t veneered_insn; | |
4106101c MS |
2066 | |
2067 | /* In an erratum 843419 workaround stub, the ADRP instruction offset. */ | |
2068 | bfd_vma adrp_offset; | |
a06ea964 NC |
2069 | }; |
2070 | ||
2071 | /* Used to build a map of a section. This is required for mixed-endian | |
2072 | code/data. */ | |
2073 | ||
cec5225b | 2074 | typedef struct elf_elf_section_map |
a06ea964 NC |
2075 | { |
2076 | bfd_vma vma; | |
2077 | char type; | |
2078 | } | |
cec5225b | 2079 | elf_aarch64_section_map; |
a06ea964 NC |
2080 | |
2081 | ||
2082 | typedef struct _aarch64_elf_section_data | |
2083 | { | |
2084 | struct bfd_elf_section_data elf; | |
2085 | unsigned int mapcount; | |
2086 | unsigned int mapsize; | |
cec5225b | 2087 | elf_aarch64_section_map *map; |
a06ea964 NC |
2088 | } |
2089 | _aarch64_elf_section_data; | |
2090 | ||
cec5225b | 2091 | #define elf_aarch64_section_data(sec) \ |
a06ea964 NC |
2092 | ((_aarch64_elf_section_data *) elf_section_data (sec)) |
2093 | ||
4e8516b2 AP |
2094 | /* The size of the thread control block which is defined to be two pointers. */ |
2095 | #define TCB_SIZE (ARCH_SIZE/8)*2 | |
a06ea964 NC |
2096 | |
2097 | struct elf_aarch64_local_symbol | |
2098 | { | |
2099 | unsigned int got_type; | |
2100 | bfd_signed_vma got_refcount; | |
2101 | bfd_vma got_offset; | |
2102 | ||
2103 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The | |
2104 | offset is from the end of the jump table and reserved entries | |
2105 | within the PLTGOT. | |
2106 | ||
2107 | The magic value (bfd_vma) -1 indicates that an offset has not be | |
2108 | allocated. */ | |
2109 | bfd_vma tlsdesc_got_jump_table_offset; | |
2110 | }; | |
2111 | ||
2112 | struct elf_aarch64_obj_tdata | |
2113 | { | |
2114 | struct elf_obj_tdata root; | |
2115 | ||
2116 | /* local symbol descriptors */ | |
2117 | struct elf_aarch64_local_symbol *locals; | |
2118 | ||
2119 | /* Zero to warn when linking objects with incompatible enum sizes. */ | |
2120 | int no_enum_size_warning; | |
2121 | ||
2122 | /* Zero to warn when linking objects with incompatible wchar_t sizes. */ | |
2123 | int no_wchar_size_warning; | |
2124 | }; | |
2125 | ||
2126 | #define elf_aarch64_tdata(bfd) \ | |
2127 | ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any) | |
2128 | ||
cec5225b | 2129 | #define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals) |
a06ea964 NC |
2130 | |
2131 | #define is_aarch64_elf(bfd) \ | |
2132 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
2133 | && elf_tdata (bfd) != NULL \ | |
2134 | && elf_object_id (bfd) == AARCH64_ELF_DATA) | |
2135 | ||
2136 | static bfd_boolean | |
cec5225b | 2137 | elfNN_aarch64_mkobject (bfd *abfd) |
a06ea964 NC |
2138 | { |
2139 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_aarch64_obj_tdata), | |
2140 | AARCH64_ELF_DATA); | |
2141 | } | |
2142 | ||
cec5225b YZ |
2143 | #define elf_aarch64_hash_entry(ent) \ |
2144 | ((struct elf_aarch64_link_hash_entry *)(ent)) | |
a06ea964 NC |
2145 | |
2146 | #define GOT_UNKNOWN 0 | |
2147 | #define GOT_NORMAL 1 | |
2148 | #define GOT_TLS_GD 2 | |
2149 | #define GOT_TLS_IE 4 | |
2150 | #define GOT_TLSDESC_GD 8 | |
2151 | ||
2152 | #define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD)) | |
2153 | ||
2154 | /* AArch64 ELF linker hash entry. */ | |
cec5225b | 2155 | struct elf_aarch64_link_hash_entry |
a06ea964 NC |
2156 | { |
2157 | struct elf_link_hash_entry root; | |
2158 | ||
2159 | /* Track dynamic relocs copied for this symbol. */ | |
2160 | struct elf_dyn_relocs *dyn_relocs; | |
2161 | ||
a06ea964 NC |
2162 | /* Since PLT entries have variable size, we need to record the |
2163 | index into .got.plt instead of recomputing it from the PLT | |
2164 | offset. */ | |
2165 | bfd_signed_vma plt_got_offset; | |
2166 | ||
2167 | /* Bit mask representing the type of GOT entry(s) if any required by | |
2168 | this symbol. */ | |
2169 | unsigned int got_type; | |
2170 | ||
2171 | /* A pointer to the most recently used stub hash entry against this | |
2172 | symbol. */ | |
cec5225b | 2173 | struct elf_aarch64_stub_hash_entry *stub_cache; |
a06ea964 NC |
2174 | |
2175 | /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset | |
2176 | is from the end of the jump table and reserved entries within the PLTGOT. | |
2177 | ||
2178 | The magic value (bfd_vma) -1 indicates that an offset has not | |
2179 | be allocated. */ | |
2180 | bfd_vma tlsdesc_got_jump_table_offset; | |
2181 | }; | |
2182 | ||
2183 | static unsigned int | |
cec5225b | 2184 | elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry *h, |
a06ea964 NC |
2185 | bfd *abfd, |
2186 | unsigned long r_symndx) | |
2187 | { | |
2188 | if (h) | |
cec5225b | 2189 | return elf_aarch64_hash_entry (h)->got_type; |
a06ea964 | 2190 | |
cec5225b | 2191 | if (! elf_aarch64_locals (abfd)) |
a06ea964 NC |
2192 | return GOT_UNKNOWN; |
2193 | ||
cec5225b | 2194 | return elf_aarch64_locals (abfd)[r_symndx].got_type; |
a06ea964 NC |
2195 | } |
2196 | ||
a06ea964 | 2197 | /* Get the AArch64 elf linker hash table from a link_info structure. */ |
cec5225b YZ |
2198 | #define elf_aarch64_hash_table(info) \ |
2199 | ((struct elf_aarch64_link_hash_table *) ((info)->hash)) | |
a06ea964 NC |
2200 | |
2201 | #define aarch64_stub_hash_lookup(table, string, create, copy) \ | |
cec5225b | 2202 | ((struct elf_aarch64_stub_hash_entry *) \ |
a06ea964 NC |
2203 | bfd_hash_lookup ((table), (string), (create), (copy))) |
2204 | ||
2205 | /* AArch64 ELF linker hash table. */ | |
cec5225b | 2206 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
2207 | { |
2208 | /* The main hash table. */ | |
2209 | struct elf_link_hash_table root; | |
2210 | ||
2211 | /* Nonzero to force PIC branch veneers. */ | |
2212 | int pic_veneer; | |
2213 | ||
68fcca92 JW |
2214 | /* Fix erratum 835769. */ |
2215 | int fix_erratum_835769; | |
2216 | ||
4106101c MS |
2217 | /* Fix erratum 843419. */ |
2218 | int fix_erratum_843419; | |
2219 | ||
2220 | /* Enable ADRP->ADR rewrite for erratum 843419 workaround. */ | |
2221 | int fix_erratum_843419_adr; | |
2222 | ||
a06ea964 NC |
2223 | /* The number of bytes in the initial entry in the PLT. */ |
2224 | bfd_size_type plt_header_size; | |
2225 | ||
2226 | /* The number of bytes in the subsequent PLT etries. */ | |
2227 | bfd_size_type plt_entry_size; | |
2228 | ||
2229 | /* Short-cuts to get to dynamic linker sections. */ | |
2230 | asection *sdynbss; | |
2231 | asection *srelbss; | |
2232 | ||
2233 | /* Small local sym cache. */ | |
2234 | struct sym_cache sym_cache; | |
2235 | ||
2236 | /* For convenience in allocate_dynrelocs. */ | |
2237 | bfd *obfd; | |
2238 | ||
2239 | /* The amount of space used by the reserved portion of the sgotplt | |
2240 | section, plus whatever space is used by the jump slots. */ | |
2241 | bfd_vma sgotplt_jump_table_size; | |
2242 | ||
2243 | /* The stub hash table. */ | |
2244 | struct bfd_hash_table stub_hash_table; | |
2245 | ||
2246 | /* Linker stub bfd. */ | |
2247 | bfd *stub_bfd; | |
2248 | ||
2249 | /* Linker call-backs. */ | |
2250 | asection *(*add_stub_section) (const char *, asection *); | |
2251 | void (*layout_sections_again) (void); | |
2252 | ||
2253 | /* Array to keep track of which stub sections have been created, and | |
2254 | information on stub grouping. */ | |
2255 | struct map_stub | |
2256 | { | |
2257 | /* This is the section to which stubs in the group will be | |
2258 | attached. */ | |
2259 | asection *link_sec; | |
2260 | /* The stub section. */ | |
2261 | asection *stub_sec; | |
2262 | } *stub_group; | |
2263 | ||
cec5225b | 2264 | /* Assorted information used by elfNN_aarch64_size_stubs. */ |
a06ea964 | 2265 | unsigned int bfd_count; |
7292b3ac | 2266 | unsigned int top_index; |
a06ea964 NC |
2267 | asection **input_list; |
2268 | ||
2269 | /* The offset into splt of the PLT entry for the TLS descriptor | |
2270 | resolver. Special values are 0, if not necessary (or not found | |
2271 | to be necessary yet), and -1 if needed but not determined | |
2272 | yet. */ | |
2273 | bfd_vma tlsdesc_plt; | |
2274 | ||
2275 | /* The GOT offset for the lazy trampoline. Communicated to the | |
2276 | loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1 | |
2277 | indicates an offset is not allocated. */ | |
2278 | bfd_vma dt_tlsdesc_got; | |
1419bbe5 WN |
2279 | |
2280 | /* Used by local STT_GNU_IFUNC symbols. */ | |
2281 | htab_t loc_hash_table; | |
2282 | void * loc_hash_memory; | |
a06ea964 NC |
2283 | }; |
2284 | ||
a06ea964 NC |
2285 | /* Create an entry in an AArch64 ELF linker hash table. */ |
2286 | ||
2287 | static struct bfd_hash_entry * | |
cec5225b | 2288 | elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry, |
a06ea964 NC |
2289 | struct bfd_hash_table *table, |
2290 | const char *string) | |
2291 | { | |
cec5225b YZ |
2292 | struct elf_aarch64_link_hash_entry *ret = |
2293 | (struct elf_aarch64_link_hash_entry *) entry; | |
a06ea964 NC |
2294 | |
2295 | /* Allocate the structure if it has not already been allocated by a | |
2296 | subclass. */ | |
2297 | if (ret == NULL) | |
2298 | ret = bfd_hash_allocate (table, | |
cec5225b | 2299 | sizeof (struct elf_aarch64_link_hash_entry)); |
a06ea964 NC |
2300 | if (ret == NULL) |
2301 | return (struct bfd_hash_entry *) ret; | |
2302 | ||
2303 | /* Call the allocation method of the superclass. */ | |
cec5225b | 2304 | ret = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
2305 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
2306 | table, string)); | |
2307 | if (ret != NULL) | |
2308 | { | |
2309 | ret->dyn_relocs = NULL; | |
a06ea964 NC |
2310 | ret->got_type = GOT_UNKNOWN; |
2311 | ret->plt_got_offset = (bfd_vma) - 1; | |
2312 | ret->stub_cache = NULL; | |
2313 | ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
2314 | } | |
2315 | ||
2316 | return (struct bfd_hash_entry *) ret; | |
2317 | } | |
2318 | ||
2319 | /* Initialize an entry in the stub hash table. */ | |
2320 | ||
2321 | static struct bfd_hash_entry * | |
2322 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
2323 | struct bfd_hash_table *table, const char *string) | |
2324 | { | |
2325 | /* Allocate the structure if it has not already been allocated by a | |
2326 | subclass. */ | |
2327 | if (entry == NULL) | |
2328 | { | |
2329 | entry = bfd_hash_allocate (table, | |
2330 | sizeof (struct | |
cec5225b | 2331 | elf_aarch64_stub_hash_entry)); |
a06ea964 NC |
2332 | if (entry == NULL) |
2333 | return entry; | |
2334 | } | |
2335 | ||
2336 | /* Call the allocation method of the superclass. */ | |
2337 | entry = bfd_hash_newfunc (entry, table, string); | |
2338 | if (entry != NULL) | |
2339 | { | |
cec5225b | 2340 | struct elf_aarch64_stub_hash_entry *eh; |
a06ea964 NC |
2341 | |
2342 | /* Initialize the local fields. */ | |
cec5225b | 2343 | eh = (struct elf_aarch64_stub_hash_entry *) entry; |
4106101c | 2344 | eh->adrp_offset = 0; |
a06ea964 NC |
2345 | eh->stub_sec = NULL; |
2346 | eh->stub_offset = 0; | |
2347 | eh->target_value = 0; | |
2348 | eh->target_section = NULL; | |
2349 | eh->stub_type = aarch64_stub_none; | |
2350 | eh->h = NULL; | |
2351 | eh->id_sec = NULL; | |
2352 | } | |
2353 | ||
2354 | return entry; | |
2355 | } | |
2356 | ||
1419bbe5 WN |
2357 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry |
2358 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
2359 | as global symbol. We reuse indx and dynstr_index for local symbol | |
2360 | hash since they aren't used by global symbols in this backend. */ | |
2361 | ||
2362 | static hashval_t | |
2363 | elfNN_aarch64_local_htab_hash (const void *ptr) | |
2364 | { | |
2365 | struct elf_link_hash_entry *h | |
2366 | = (struct elf_link_hash_entry *) ptr; | |
2367 | return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); | |
2368 | } | |
2369 | ||
2370 | /* Compare local hash entries. */ | |
2371 | ||
2372 | static int | |
2373 | elfNN_aarch64_local_htab_eq (const void *ptr1, const void *ptr2) | |
2374 | { | |
2375 | struct elf_link_hash_entry *h1 | |
2376 | = (struct elf_link_hash_entry *) ptr1; | |
2377 | struct elf_link_hash_entry *h2 | |
2378 | = (struct elf_link_hash_entry *) ptr2; | |
2379 | ||
2380 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
2381 | } | |
2382 | ||
2383 | /* Find and/or create a hash entry for local symbol. */ | |
2384 | ||
2385 | static struct elf_link_hash_entry * | |
2386 | elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table *htab, | |
2387 | bfd *abfd, const Elf_Internal_Rela *rel, | |
2388 | bfd_boolean create) | |
2389 | { | |
2390 | struct elf_aarch64_link_hash_entry e, *ret; | |
2391 | asection *sec = abfd->sections; | |
2392 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, | |
2393 | ELFNN_R_SYM (rel->r_info)); | |
2394 | void **slot; | |
2395 | ||
2396 | e.root.indx = sec->id; | |
2397 | e.root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2398 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, | |
2399 | create ? INSERT : NO_INSERT); | |
2400 | ||
2401 | if (!slot) | |
2402 | return NULL; | |
2403 | ||
2404 | if (*slot) | |
2405 | { | |
2406 | ret = (struct elf_aarch64_link_hash_entry *) *slot; | |
2407 | return &ret->root; | |
2408 | } | |
2409 | ||
2410 | ret = (struct elf_aarch64_link_hash_entry *) | |
2411 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, | |
2412 | sizeof (struct elf_aarch64_link_hash_entry)); | |
2413 | if (ret) | |
2414 | { | |
2415 | memset (ret, 0, sizeof (*ret)); | |
2416 | ret->root.indx = sec->id; | |
2417 | ret->root.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
2418 | ret->root.dynindx = -1; | |
2419 | *slot = ret; | |
2420 | } | |
2421 | return &ret->root; | |
2422 | } | |
a06ea964 NC |
2423 | |
2424 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
2425 | ||
2426 | static void | |
cec5225b | 2427 | elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info, |
a06ea964 NC |
2428 | struct elf_link_hash_entry *dir, |
2429 | struct elf_link_hash_entry *ind) | |
2430 | { | |
cec5225b | 2431 | struct elf_aarch64_link_hash_entry *edir, *eind; |
a06ea964 | 2432 | |
cec5225b YZ |
2433 | edir = (struct elf_aarch64_link_hash_entry *) dir; |
2434 | eind = (struct elf_aarch64_link_hash_entry *) ind; | |
a06ea964 NC |
2435 | |
2436 | if (eind->dyn_relocs != NULL) | |
2437 | { | |
2438 | if (edir->dyn_relocs != NULL) | |
2439 | { | |
2440 | struct elf_dyn_relocs **pp; | |
2441 | struct elf_dyn_relocs *p; | |
2442 | ||
2443 | /* Add reloc counts against the indirect sym to the direct sym | |
2444 | list. Merge any entries against the same section. */ | |
2445 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) | |
2446 | { | |
2447 | struct elf_dyn_relocs *q; | |
2448 | ||
2449 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
2450 | if (q->sec == p->sec) | |
2451 | { | |
2452 | q->pc_count += p->pc_count; | |
2453 | q->count += p->count; | |
2454 | *pp = p->next; | |
2455 | break; | |
2456 | } | |
2457 | if (q == NULL) | |
2458 | pp = &p->next; | |
2459 | } | |
2460 | *pp = edir->dyn_relocs; | |
2461 | } | |
2462 | ||
2463 | edir->dyn_relocs = eind->dyn_relocs; | |
2464 | eind->dyn_relocs = NULL; | |
2465 | } | |
2466 | ||
a06ea964 NC |
2467 | if (ind->root.type == bfd_link_hash_indirect) |
2468 | { | |
2469 | /* Copy over PLT info. */ | |
2470 | if (dir->got.refcount <= 0) | |
2471 | { | |
2472 | edir->got_type = eind->got_type; | |
2473 | eind->got_type = GOT_UNKNOWN; | |
2474 | } | |
2475 | } | |
2476 | ||
2477 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
2478 | } | |
2479 | ||
68faa637 AM |
2480 | /* Destroy an AArch64 elf linker hash table. */ |
2481 | ||
2482 | static void | |
d495ab0d | 2483 | elfNN_aarch64_link_hash_table_free (bfd *obfd) |
68faa637 AM |
2484 | { |
2485 | struct elf_aarch64_link_hash_table *ret | |
d495ab0d | 2486 | = (struct elf_aarch64_link_hash_table *) obfd->link.hash; |
68faa637 AM |
2487 | |
2488 | if (ret->loc_hash_table) | |
2489 | htab_delete (ret->loc_hash_table); | |
2490 | if (ret->loc_hash_memory) | |
2491 | objalloc_free ((struct objalloc *) ret->loc_hash_memory); | |
2492 | ||
2493 | bfd_hash_table_free (&ret->stub_hash_table); | |
d495ab0d | 2494 | _bfd_elf_link_hash_table_free (obfd); |
68faa637 AM |
2495 | } |
2496 | ||
a06ea964 NC |
2497 | /* Create an AArch64 elf linker hash table. */ |
2498 | ||
2499 | static struct bfd_link_hash_table * | |
cec5225b | 2500 | elfNN_aarch64_link_hash_table_create (bfd *abfd) |
a06ea964 | 2501 | { |
cec5225b YZ |
2502 | struct elf_aarch64_link_hash_table *ret; |
2503 | bfd_size_type amt = sizeof (struct elf_aarch64_link_hash_table); | |
a06ea964 | 2504 | |
7bf52ea2 | 2505 | ret = bfd_zmalloc (amt); |
a06ea964 NC |
2506 | if (ret == NULL) |
2507 | return NULL; | |
2508 | ||
2509 | if (!_bfd_elf_link_hash_table_init | |
cec5225b YZ |
2510 | (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc, |
2511 | sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA)) | |
a06ea964 NC |
2512 | { |
2513 | free (ret); | |
2514 | return NULL; | |
2515 | } | |
2516 | ||
a06ea964 NC |
2517 | ret->plt_header_size = PLT_ENTRY_SIZE; |
2518 | ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE; | |
a06ea964 | 2519 | ret->obfd = abfd; |
a06ea964 NC |
2520 | ret->dt_tlsdesc_got = (bfd_vma) - 1; |
2521 | ||
2522 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc, | |
cec5225b | 2523 | sizeof (struct elf_aarch64_stub_hash_entry))) |
a06ea964 | 2524 | { |
d495ab0d | 2525 | _bfd_elf_link_hash_table_free (abfd); |
a06ea964 NC |
2526 | return NULL; |
2527 | } | |
2528 | ||
1419bbe5 WN |
2529 | ret->loc_hash_table = htab_try_create (1024, |
2530 | elfNN_aarch64_local_htab_hash, | |
2531 | elfNN_aarch64_local_htab_eq, | |
2532 | NULL); | |
2533 | ret->loc_hash_memory = objalloc_create (); | |
2534 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
2535 | { | |
d495ab0d | 2536 | elfNN_aarch64_link_hash_table_free (abfd); |
1419bbe5 WN |
2537 | return NULL; |
2538 | } | |
d495ab0d | 2539 | ret->root.root.hash_table_free = elfNN_aarch64_link_hash_table_free; |
1419bbe5 | 2540 | |
a06ea964 NC |
2541 | return &ret->root.root; |
2542 | } | |
2543 | ||
a06ea964 NC |
2544 | static bfd_boolean |
2545 | aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section, | |
2546 | bfd_vma offset, bfd_vma value) | |
2547 | { | |
2548 | reloc_howto_type *howto; | |
2549 | bfd_vma place; | |
2550 | ||
cec5225b | 2551 | howto = elfNN_aarch64_howto_from_type (r_type); |
a06ea964 NC |
2552 | place = (input_section->output_section->vma + input_section->output_offset |
2553 | + offset); | |
caed7120 YZ |
2554 | |
2555 | r_type = elfNN_aarch64_bfd_reloc_from_type (r_type); | |
2556 | value = _bfd_aarch64_elf_resolve_relocation (r_type, place, value, 0, FALSE); | |
2557 | return _bfd_aarch64_elf_put_addend (input_bfd, | |
2558 | input_section->contents + offset, r_type, | |
2559 | howto, value); | |
a06ea964 NC |
2560 | } |
2561 | ||
cec5225b | 2562 | static enum elf_aarch64_stub_type |
a06ea964 NC |
2563 | aarch64_select_branch_stub (bfd_vma value, bfd_vma place) |
2564 | { | |
2565 | if (aarch64_valid_for_adrp_p (value, place)) | |
2566 | return aarch64_stub_adrp_branch; | |
2567 | return aarch64_stub_long_branch; | |
2568 | } | |
2569 | ||
2570 | /* Determine the type of stub needed, if any, for a call. */ | |
2571 | ||
cec5225b | 2572 | static enum elf_aarch64_stub_type |
a06ea964 NC |
2573 | aarch64_type_of_stub (struct bfd_link_info *info, |
2574 | asection *input_sec, | |
2575 | const Elf_Internal_Rela *rel, | |
f678ded7 | 2576 | asection *sym_sec, |
a06ea964 | 2577 | unsigned char st_type, |
cec5225b | 2578 | struct elf_aarch64_link_hash_entry *hash, |
a06ea964 NC |
2579 | bfd_vma destination) |
2580 | { | |
2581 | bfd_vma location; | |
2582 | bfd_signed_vma branch_offset; | |
2583 | unsigned int r_type; | |
cec5225b YZ |
2584 | struct elf_aarch64_link_hash_table *globals; |
2585 | enum elf_aarch64_stub_type stub_type = aarch64_stub_none; | |
a06ea964 NC |
2586 | bfd_boolean via_plt_p; |
2587 | ||
f678ded7 JW |
2588 | if (st_type != STT_FUNC |
2589 | && (sym_sec != bfd_abs_section_ptr)) | |
a06ea964 NC |
2590 | return stub_type; |
2591 | ||
cec5225b | 2592 | globals = elf_aarch64_hash_table (info); |
a06ea964 NC |
2593 | via_plt_p = (globals->root.splt != NULL && hash != NULL |
2594 | && hash->root.plt.offset != (bfd_vma) - 1); | |
07f9ddfe | 2595 | /* Make sure call to plt stub can fit into the branch range. */ |
a06ea964 | 2596 | if (via_plt_p) |
07f9ddfe JW |
2597 | destination = (globals->root.splt->output_section->vma |
2598 | + globals->root.splt->output_offset | |
2599 | + hash->root.plt.offset); | |
a06ea964 NC |
2600 | |
2601 | /* Determine where the call point is. */ | |
2602 | location = (input_sec->output_offset | |
2603 | + input_sec->output_section->vma + rel->r_offset); | |
2604 | ||
2605 | branch_offset = (bfd_signed_vma) (destination - location); | |
2606 | ||
cec5225b | 2607 | r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
2608 | |
2609 | /* We don't want to redirect any old unconditional jump in this way, | |
2610 | only one which is being used for a sibcall, where it is | |
2611 | acceptable for the IP0 and IP1 registers to be clobbered. */ | |
a6bb11b2 | 2612 | if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26)) |
a06ea964 NC |
2613 | && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET |
2614 | || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET)) | |
2615 | { | |
2616 | stub_type = aarch64_stub_long_branch; | |
2617 | } | |
2618 | ||
2619 | return stub_type; | |
2620 | } | |
2621 | ||
2622 | /* Build a name for an entry in the stub hash table. */ | |
2623 | ||
2624 | static char * | |
cec5225b | 2625 | elfNN_aarch64_stub_name (const asection *input_section, |
a06ea964 | 2626 | const asection *sym_sec, |
cec5225b | 2627 | const struct elf_aarch64_link_hash_entry *hash, |
a06ea964 NC |
2628 | const Elf_Internal_Rela *rel) |
2629 | { | |
2630 | char *stub_name; | |
2631 | bfd_size_type len; | |
2632 | ||
2633 | if (hash) | |
2634 | { | |
2635 | len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1; | |
2636 | stub_name = bfd_malloc (len); | |
2637 | if (stub_name != NULL) | |
2638 | snprintf (stub_name, len, "%08x_%s+%" BFD_VMA_FMT "x", | |
2639 | (unsigned int) input_section->id, | |
2640 | hash->root.root.root.string, | |
2641 | rel->r_addend); | |
2642 | } | |
2643 | else | |
2644 | { | |
2645 | len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1; | |
2646 | stub_name = bfd_malloc (len); | |
2647 | if (stub_name != NULL) | |
2648 | snprintf (stub_name, len, "%08x_%x:%x+%" BFD_VMA_FMT "x", | |
2649 | (unsigned int) input_section->id, | |
2650 | (unsigned int) sym_sec->id, | |
cec5225b | 2651 | (unsigned int) ELFNN_R_SYM (rel->r_info), |
a06ea964 NC |
2652 | rel->r_addend); |
2653 | } | |
2654 | ||
2655 | return stub_name; | |
2656 | } | |
2657 | ||
2658 | /* Look up an entry in the stub hash. Stub entries are cached because | |
2659 | creating the stub name takes a bit of time. */ | |
2660 | ||
cec5225b YZ |
2661 | static struct elf_aarch64_stub_hash_entry * |
2662 | elfNN_aarch64_get_stub_entry (const asection *input_section, | |
a06ea964 NC |
2663 | const asection *sym_sec, |
2664 | struct elf_link_hash_entry *hash, | |
2665 | const Elf_Internal_Rela *rel, | |
cec5225b | 2666 | struct elf_aarch64_link_hash_table *htab) |
a06ea964 | 2667 | { |
cec5225b YZ |
2668 | struct elf_aarch64_stub_hash_entry *stub_entry; |
2669 | struct elf_aarch64_link_hash_entry *h = | |
2670 | (struct elf_aarch64_link_hash_entry *) hash; | |
a06ea964 NC |
2671 | const asection *id_sec; |
2672 | ||
2673 | if ((input_section->flags & SEC_CODE) == 0) | |
2674 | return NULL; | |
2675 | ||
2676 | /* If this input section is part of a group of sections sharing one | |
2677 | stub section, then use the id of the first section in the group. | |
2678 | Stub names need to include a section id, as there may well be | |
2679 | more than one stub used to reach say, printf, and we need to | |
2680 | distinguish between them. */ | |
2681 | id_sec = htab->stub_group[input_section->id].link_sec; | |
2682 | ||
2683 | if (h != NULL && h->stub_cache != NULL | |
2684 | && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec) | |
2685 | { | |
2686 | stub_entry = h->stub_cache; | |
2687 | } | |
2688 | else | |
2689 | { | |
2690 | char *stub_name; | |
2691 | ||
cec5225b | 2692 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel); |
a06ea964 NC |
2693 | if (stub_name == NULL) |
2694 | return NULL; | |
2695 | ||
2696 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
2697 | stub_name, FALSE, FALSE); | |
2698 | if (h != NULL) | |
2699 | h->stub_cache = stub_entry; | |
2700 | ||
2701 | free (stub_name); | |
2702 | } | |
2703 | ||
2704 | return stub_entry; | |
2705 | } | |
2706 | ||
a06ea964 | 2707 | |
66585675 MS |
2708 | /* Create a stub section. */ |
2709 | ||
2710 | static asection * | |
2711 | _bfd_aarch64_create_stub_section (asection *section, | |
2712 | struct elf_aarch64_link_hash_table *htab) | |
2713 | { | |
2714 | size_t namelen; | |
2715 | bfd_size_type len; | |
2716 | char *s_name; | |
2717 | ||
2718 | namelen = strlen (section->name); | |
2719 | len = namelen + sizeof (STUB_SUFFIX); | |
2720 | s_name = bfd_alloc (htab->stub_bfd, len); | |
2721 | if (s_name == NULL) | |
2722 | return NULL; | |
2723 | ||
2724 | memcpy (s_name, section->name, namelen); | |
2725 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
2726 | return (*htab->add_stub_section) (s_name, section); | |
2727 | } | |
2728 | ||
2729 | ||
fc6d53be MS |
2730 | /* Find or create a stub section for a link section. |
2731 | ||
2732 | Fix or create the stub section used to collect stubs attached to | |
2733 | the specified link section. */ | |
2734 | ||
2735 | static asection * | |
2736 | _bfd_aarch64_get_stub_for_link_section (asection *link_section, | |
2737 | struct elf_aarch64_link_hash_table *htab) | |
2738 | { | |
2739 | if (htab->stub_group[link_section->id].stub_sec == NULL) | |
2740 | htab->stub_group[link_section->id].stub_sec | |
2741 | = _bfd_aarch64_create_stub_section (link_section, htab); | |
2742 | return htab->stub_group[link_section->id].stub_sec; | |
2743 | } | |
2744 | ||
2745 | ||
ef857521 MS |
2746 | /* Find or create a stub section in the stub group for an input |
2747 | section. */ | |
2748 | ||
2749 | static asection * | |
2750 | _bfd_aarch64_create_or_find_stub_sec (asection *section, | |
2751 | struct elf_aarch64_link_hash_table *htab) | |
a06ea964 | 2752 | { |
fc6d53be MS |
2753 | asection *link_sec = htab->stub_group[section->id].link_sec; |
2754 | return _bfd_aarch64_get_stub_for_link_section (link_sec, htab); | |
ef857521 MS |
2755 | } |
2756 | ||
2757 | ||
2758 | /* Add a new stub entry in the stub group associated with an input | |
2759 | section to the stub hash. Not all fields of the new stub entry are | |
2760 | initialised. */ | |
2761 | ||
2762 | static struct elf_aarch64_stub_hash_entry * | |
2763 | _bfd_aarch64_add_stub_entry_in_group (const char *stub_name, | |
2764 | asection *section, | |
2765 | struct elf_aarch64_link_hash_table *htab) | |
2766 | { | |
2767 | asection *link_sec; | |
2768 | asection *stub_sec; | |
2769 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
2770 | ||
2771 | link_sec = htab->stub_group[section->id].link_sec; | |
2772 | stub_sec = _bfd_aarch64_create_or_find_stub_sec (section, htab); | |
2773 | ||
a06ea964 NC |
2774 | /* Enter this entry into the linker stub hash table. */ |
2775 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
2776 | TRUE, FALSE); | |
2777 | if (stub_entry == NULL) | |
2778 | { | |
2779 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), | |
2780 | section->owner, stub_name); | |
2781 | return NULL; | |
2782 | } | |
2783 | ||
2784 | stub_entry->stub_sec = stub_sec; | |
2785 | stub_entry->stub_offset = 0; | |
2786 | stub_entry->id_sec = link_sec; | |
2787 | ||
2788 | return stub_entry; | |
2789 | } | |
2790 | ||
4106101c MS |
2791 | /* Add a new stub entry in the final stub section to the stub hash. |
2792 | Not all fields of the new stub entry are initialised. */ | |
2793 | ||
2794 | static struct elf_aarch64_stub_hash_entry * | |
2795 | _bfd_aarch64_add_stub_entry_after (const char *stub_name, | |
2796 | asection *link_section, | |
2797 | struct elf_aarch64_link_hash_table *htab) | |
2798 | { | |
2799 | asection *stub_sec; | |
2800 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
2801 | ||
2802 | stub_sec = _bfd_aarch64_get_stub_for_link_section (link_section, htab); | |
2803 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
2804 | TRUE, FALSE); | |
2805 | if (stub_entry == NULL) | |
2806 | { | |
2807 | (*_bfd_error_handler) (_("cannot create stub entry %s"), stub_name); | |
2808 | return NULL; | |
2809 | } | |
2810 | ||
2811 | stub_entry->stub_sec = stub_sec; | |
2812 | stub_entry->stub_offset = 0; | |
2813 | stub_entry->id_sec = link_section; | |
2814 | ||
2815 | return stub_entry; | |
2816 | } | |
2817 | ||
2818 | ||
a06ea964 NC |
2819 | static bfd_boolean |
2820 | aarch64_build_one_stub (struct bfd_hash_entry *gen_entry, | |
2821 | void *in_arg ATTRIBUTE_UNUSED) | |
2822 | { | |
cec5225b | 2823 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
2824 | asection *stub_sec; |
2825 | bfd *stub_bfd; | |
2826 | bfd_byte *loc; | |
2827 | bfd_vma sym_value; | |
68fcca92 JW |
2828 | bfd_vma veneered_insn_loc; |
2829 | bfd_vma veneer_entry_loc; | |
2830 | bfd_signed_vma branch_offset = 0; | |
a06ea964 NC |
2831 | unsigned int template_size; |
2832 | const uint32_t *template; | |
2833 | unsigned int i; | |
2834 | ||
2835 | /* Massage our args to the form they really have. */ | |
cec5225b | 2836 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
2837 | |
2838 | stub_sec = stub_entry->stub_sec; | |
2839 | ||
2840 | /* Make a note of the offset within the stubs for this entry. */ | |
2841 | stub_entry->stub_offset = stub_sec->size; | |
2842 | loc = stub_sec->contents + stub_entry->stub_offset; | |
2843 | ||
2844 | stub_bfd = stub_sec->owner; | |
2845 | ||
2846 | /* This is the address of the stub destination. */ | |
2847 | sym_value = (stub_entry->target_value | |
2848 | + stub_entry->target_section->output_offset | |
2849 | + stub_entry->target_section->output_section->vma); | |
2850 | ||
2851 | if (stub_entry->stub_type == aarch64_stub_long_branch) | |
2852 | { | |
2853 | bfd_vma place = (stub_entry->stub_offset + stub_sec->output_section->vma | |
2854 | + stub_sec->output_offset); | |
2855 | ||
2856 | /* See if we can relax the stub. */ | |
2857 | if (aarch64_valid_for_adrp_p (sym_value, place)) | |
2858 | stub_entry->stub_type = aarch64_select_branch_stub (sym_value, place); | |
2859 | } | |
2860 | ||
2861 | switch (stub_entry->stub_type) | |
2862 | { | |
2863 | case aarch64_stub_adrp_branch: | |
2864 | template = aarch64_adrp_branch_stub; | |
2865 | template_size = sizeof (aarch64_adrp_branch_stub); | |
2866 | break; | |
2867 | case aarch64_stub_long_branch: | |
2868 | template = aarch64_long_branch_stub; | |
2869 | template_size = sizeof (aarch64_long_branch_stub); | |
2870 | break; | |
68fcca92 JW |
2871 | case aarch64_stub_erratum_835769_veneer: |
2872 | template = aarch64_erratum_835769_stub; | |
2873 | template_size = sizeof (aarch64_erratum_835769_stub); | |
2874 | break; | |
4106101c MS |
2875 | case aarch64_stub_erratum_843419_veneer: |
2876 | template = aarch64_erratum_843419_stub; | |
2877 | template_size = sizeof (aarch64_erratum_843419_stub); | |
2878 | break; | |
a06ea964 | 2879 | default: |
8e2fe09f | 2880 | abort (); |
a06ea964 NC |
2881 | } |
2882 | ||
2883 | for (i = 0; i < (template_size / sizeof template[0]); i++) | |
2884 | { | |
2885 | bfd_putl32 (template[i], loc); | |
2886 | loc += 4; | |
2887 | } | |
2888 | ||
2889 | template_size = (template_size + 7) & ~7; | |
2890 | stub_sec->size += template_size; | |
2891 | ||
2892 | switch (stub_entry->stub_type) | |
2893 | { | |
2894 | case aarch64_stub_adrp_branch: | |
a6bb11b2 | 2895 | if (aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21), stub_bfd, stub_sec, |
a06ea964 NC |
2896 | stub_entry->stub_offset, sym_value)) |
2897 | /* The stub would not have been relaxed if the offset was out | |
2898 | of range. */ | |
2899 | BFD_FAIL (); | |
2900 | ||
93ca8569 TB |
2901 | if (aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC), stub_bfd, stub_sec, |
2902 | stub_entry->stub_offset + 4, sym_value)) | |
2903 | BFD_FAIL (); | |
a06ea964 NC |
2904 | break; |
2905 | ||
2906 | case aarch64_stub_long_branch: | |
2907 | /* We want the value relative to the address 12 bytes back from the | |
2908 | value itself. */ | |
93ca8569 TB |
2909 | if (aarch64_relocate (AARCH64_R (PRELNN), stub_bfd, stub_sec, |
2910 | stub_entry->stub_offset + 16, sym_value + 12)) | |
2911 | BFD_FAIL (); | |
a06ea964 | 2912 | break; |
68fcca92 JW |
2913 | |
2914 | case aarch64_stub_erratum_835769_veneer: | |
2915 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
2916 | + stub_entry->target_section->output_offset | |
2917 | + stub_entry->target_value; | |
2918 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
2919 | + stub_entry->stub_sec->output_offset | |
2920 | + stub_entry->stub_offset; | |
2921 | branch_offset = veneered_insn_loc - veneer_entry_loc; | |
2922 | branch_offset >>= 2; | |
2923 | branch_offset &= 0x3ffffff; | |
2924 | bfd_putl32 (stub_entry->veneered_insn, | |
2925 | stub_sec->contents + stub_entry->stub_offset); | |
2926 | bfd_putl32 (template[1] | branch_offset, | |
2927 | stub_sec->contents + stub_entry->stub_offset + 4); | |
2928 | break; | |
2929 | ||
4106101c MS |
2930 | case aarch64_stub_erratum_843419_veneer: |
2931 | if (aarch64_relocate (AARCH64_R (JUMP26), stub_bfd, stub_sec, | |
2932 | stub_entry->stub_offset + 4, sym_value + 4)) | |
2933 | BFD_FAIL (); | |
2934 | break; | |
2935 | ||
a06ea964 | 2936 | default: |
8e2fe09f | 2937 | abort (); |
a06ea964 NC |
2938 | } |
2939 | ||
2940 | return TRUE; | |
2941 | } | |
2942 | ||
2943 | /* As above, but don't actually build the stub. Just bump offset so | |
2944 | we know stub section sizes. */ | |
2945 | ||
2946 | static bfd_boolean | |
2947 | aarch64_size_one_stub (struct bfd_hash_entry *gen_entry, | |
2948 | void *in_arg ATTRIBUTE_UNUSED) | |
2949 | { | |
cec5225b | 2950 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
2951 | int size; |
2952 | ||
2953 | /* Massage our args to the form they really have. */ | |
cec5225b | 2954 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
2955 | |
2956 | switch (stub_entry->stub_type) | |
2957 | { | |
2958 | case aarch64_stub_adrp_branch: | |
2959 | size = sizeof (aarch64_adrp_branch_stub); | |
2960 | break; | |
2961 | case aarch64_stub_long_branch: | |
2962 | size = sizeof (aarch64_long_branch_stub); | |
2963 | break; | |
68fcca92 JW |
2964 | case aarch64_stub_erratum_835769_veneer: |
2965 | size = sizeof (aarch64_erratum_835769_stub); | |
2966 | break; | |
4106101c MS |
2967 | case aarch64_stub_erratum_843419_veneer: |
2968 | size = sizeof (aarch64_erratum_843419_stub); | |
2969 | break; | |
a06ea964 | 2970 | default: |
8e2fe09f | 2971 | abort (); |
a06ea964 NC |
2972 | } |
2973 | ||
2974 | size = (size + 7) & ~7; | |
2975 | stub_entry->stub_sec->size += size; | |
2976 | return TRUE; | |
2977 | } | |
2978 | ||
2979 | /* External entry points for sizing and building linker stubs. */ | |
2980 | ||
2981 | /* Set up various things so that we can make a list of input sections | |
2982 | for each output section included in the link. Returns -1 on error, | |
2983 | 0 when no stubs will be needed, and 1 on success. */ | |
2984 | ||
2985 | int | |
cec5225b | 2986 | elfNN_aarch64_setup_section_lists (bfd *output_bfd, |
a06ea964 NC |
2987 | struct bfd_link_info *info) |
2988 | { | |
2989 | bfd *input_bfd; | |
2990 | unsigned int bfd_count; | |
7292b3ac | 2991 | unsigned int top_id, top_index; |
a06ea964 NC |
2992 | asection *section; |
2993 | asection **input_list, **list; | |
2994 | bfd_size_type amt; | |
cec5225b YZ |
2995 | struct elf_aarch64_link_hash_table *htab = |
2996 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
2997 | |
2998 | if (!is_elf_hash_table (htab)) | |
2999 | return 0; | |
3000 | ||
3001 | /* Count the number of input BFDs and find the top input section id. */ | |
3002 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
c72f2fb2 | 3003 | input_bfd != NULL; input_bfd = input_bfd->link.next) |
a06ea964 NC |
3004 | { |
3005 | bfd_count += 1; | |
3006 | for (section = input_bfd->sections; | |
3007 | section != NULL; section = section->next) | |
3008 | { | |
3009 | if (top_id < section->id) | |
3010 | top_id = section->id; | |
3011 | } | |
3012 | } | |
3013 | htab->bfd_count = bfd_count; | |
3014 | ||
3015 | amt = sizeof (struct map_stub) * (top_id + 1); | |
3016 | htab->stub_group = bfd_zmalloc (amt); | |
3017 | if (htab->stub_group == NULL) | |
3018 | return -1; | |
3019 | ||
3020 | /* We can't use output_bfd->section_count here to find the top output | |
3021 | section index as some sections may have been removed, and | |
3022 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
3023 | for (section = output_bfd->sections, top_index = 0; | |
3024 | section != NULL; section = section->next) | |
3025 | { | |
3026 | if (top_index < section->index) | |
3027 | top_index = section->index; | |
3028 | } | |
3029 | ||
3030 | htab->top_index = top_index; | |
3031 | amt = sizeof (asection *) * (top_index + 1); | |
3032 | input_list = bfd_malloc (amt); | |
3033 | htab->input_list = input_list; | |
3034 | if (input_list == NULL) | |
3035 | return -1; | |
3036 | ||
3037 | /* For sections we aren't interested in, mark their entries with a | |
3038 | value we can check later. */ | |
3039 | list = input_list + top_index; | |
3040 | do | |
3041 | *list = bfd_abs_section_ptr; | |
3042 | while (list-- != input_list); | |
3043 | ||
3044 | for (section = output_bfd->sections; | |
3045 | section != NULL; section = section->next) | |
3046 | { | |
3047 | if ((section->flags & SEC_CODE) != 0) | |
3048 | input_list[section->index] = NULL; | |
3049 | } | |
3050 | ||
3051 | return 1; | |
3052 | } | |
3053 | ||
cec5225b | 3054 | /* Used by elfNN_aarch64_next_input_section and group_sections. */ |
a06ea964 NC |
3055 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3056 | ||
3057 | /* The linker repeatedly calls this function for each input section, | |
3058 | in the order that input sections are linked into output sections. | |
3059 | Build lists of input sections to determine groupings between which | |
3060 | we may insert linker stubs. */ | |
3061 | ||
3062 | void | |
cec5225b | 3063 | elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec) |
a06ea964 | 3064 | { |
cec5225b YZ |
3065 | struct elf_aarch64_link_hash_table *htab = |
3066 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
3067 | |
3068 | if (isec->output_section->index <= htab->top_index) | |
3069 | { | |
3070 | asection **list = htab->input_list + isec->output_section->index; | |
3071 | ||
3072 | if (*list != bfd_abs_section_ptr) | |
3073 | { | |
3074 | /* Steal the link_sec pointer for our list. */ | |
3075 | /* This happens to make the list in reverse order, | |
3076 | which is what we want. */ | |
3077 | PREV_SEC (isec) = *list; | |
3078 | *list = isec; | |
3079 | } | |
3080 | } | |
3081 | } | |
3082 | ||
3083 | /* See whether we can group stub sections together. Grouping stub | |
3084 | sections may result in fewer stubs. More importantly, we need to | |
3085 | put all .init* and .fini* stubs at the beginning of the .init or | |
3086 | .fini output sections respectively, because glibc splits the | |
3087 | _init and _fini functions into multiple parts. Putting a stub in | |
3088 | the middle of a function is not a good idea. */ | |
3089 | ||
3090 | static void | |
cec5225b | 3091 | group_sections (struct elf_aarch64_link_hash_table *htab, |
a06ea964 NC |
3092 | bfd_size_type stub_group_size, |
3093 | bfd_boolean stubs_always_before_branch) | |
3094 | { | |
3095 | asection **list = htab->input_list + htab->top_index; | |
3096 | ||
3097 | do | |
3098 | { | |
3099 | asection *tail = *list; | |
3100 | ||
3101 | if (tail == bfd_abs_section_ptr) | |
3102 | continue; | |
3103 | ||
3104 | while (tail != NULL) | |
3105 | { | |
3106 | asection *curr; | |
3107 | asection *prev; | |
3108 | bfd_size_type total; | |
3109 | ||
3110 | curr = tail; | |
3111 | total = tail->size; | |
3112 | while ((prev = PREV_SEC (curr)) != NULL | |
3113 | && ((total += curr->output_offset - prev->output_offset) | |
3114 | < stub_group_size)) | |
3115 | curr = prev; | |
3116 | ||
3117 | /* OK, the size from the start of CURR to the end is less | |
3118 | than stub_group_size and thus can be handled by one stub | |
3119 | section. (Or the tail section is itself larger than | |
3120 | stub_group_size, in which case we may be toast.) | |
3121 | We should really be keeping track of the total size of | |
3122 | stubs added here, as stubs contribute to the final output | |
3123 | section size. */ | |
3124 | do | |
3125 | { | |
3126 | prev = PREV_SEC (tail); | |
3127 | /* Set up this stub group. */ | |
3128 | htab->stub_group[tail->id].link_sec = curr; | |
3129 | } | |
3130 | while (tail != curr && (tail = prev) != NULL); | |
3131 | ||
3132 | /* But wait, there's more! Input sections up to stub_group_size | |
3133 | bytes before the stub section can be handled by it too. */ | |
3134 | if (!stubs_always_before_branch) | |
3135 | { | |
3136 | total = 0; | |
3137 | while (prev != NULL | |
3138 | && ((total += tail->output_offset - prev->output_offset) | |
3139 | < stub_group_size)) | |
3140 | { | |
3141 | tail = prev; | |
3142 | prev = PREV_SEC (tail); | |
3143 | htab->stub_group[tail->id].link_sec = curr; | |
3144 | } | |
3145 | } | |
3146 | tail = prev; | |
3147 | } | |
3148 | } | |
3149 | while (list-- != htab->input_list); | |
3150 | ||
3151 | free (htab->input_list); | |
3152 | } | |
3153 | ||
3154 | #undef PREV_SEC | |
3155 | ||
68fcca92 JW |
3156 | #define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1)) |
3157 | ||
3158 | #define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5) | |
3159 | #define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5) | |
3160 | #define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5) | |
3161 | #define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5) | |
3162 | #define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5) | |
3163 | #define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5) | |
3164 | ||
3165 | #define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000) | |
3166 | #define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1) | |
3167 | #define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3) | |
3168 | #define AARCH64_ZR 0x1f | |
3169 | ||
3170 | /* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for | |
3171 | LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */ | |
3172 | ||
3173 | #define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1) | |
3174 | #define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000) | |
3175 | #define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000) | |
3176 | #define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000) | |
3177 | #define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000) | |
3178 | #define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000) | |
3179 | #define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000) | |
3180 | #define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000) | |
3181 | #define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000) | |
3182 | #define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400) | |
3183 | #define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800) | |
3184 | #define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00) | |
3185 | #define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800) | |
3186 | #define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000) | |
3187 | #define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000) | |
3188 | #define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000) | |
3189 | #define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000) | |
3190 | #define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000) | |
3191 | ||
3d14faea MS |
3192 | /* Classify an INSN if it is indeed a load/store. |
3193 | ||
3194 | Return TRUE if INSN is a LD/ST instruction otherwise return FALSE. | |
3195 | ||
3196 | For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2 | |
3197 | is set equal to RT. | |
3198 | ||
3199 | For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. | |
3200 | ||
3201 | */ | |
68fcca92 JW |
3202 | |
3203 | static bfd_boolean | |
3d14faea | 3204 | aarch64_mem_op_p (uint32_t insn, unsigned int *rt, unsigned int *rt2, |
68fcca92 JW |
3205 | bfd_boolean *pair, bfd_boolean *load) |
3206 | { | |
3207 | uint32_t opcode; | |
3208 | unsigned int r; | |
3209 | uint32_t opc = 0; | |
3210 | uint32_t v = 0; | |
3211 | uint32_t opc_v = 0; | |
3212 | ||
3213 | /* Bail out quickly if INSN doesn't fall into the the load-store | |
3214 | encoding space. */ | |
3215 | if (!AARCH64_LDST (insn)) | |
3216 | return FALSE; | |
3217 | ||
3218 | *pair = FALSE; | |
3219 | *load = FALSE; | |
3220 | if (AARCH64_LDST_EX (insn)) | |
3221 | { | |
3222 | *rt = AARCH64_RT (insn); | |
3d14faea | 3223 | *rt2 = *rt; |
68fcca92 JW |
3224 | if (AARCH64_BIT (insn, 21) == 1) |
3225 | { | |
3226 | *pair = TRUE; | |
3d14faea | 3227 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
3228 | } |
3229 | *load = AARCH64_LD (insn); | |
3230 | return TRUE; | |
3231 | } | |
3232 | else if (AARCH64_LDST_NAP (insn) | |
3233 | || AARCH64_LDSTP_PI (insn) | |
3234 | || AARCH64_LDSTP_O (insn) | |
3235 | || AARCH64_LDSTP_PRE (insn)) | |
3236 | { | |
3237 | *pair = TRUE; | |
3238 | *rt = AARCH64_RT (insn); | |
3d14faea | 3239 | *rt2 = AARCH64_RT2 (insn); |
68fcca92 JW |
3240 | *load = AARCH64_LD (insn); |
3241 | return TRUE; | |
3242 | } | |
3243 | else if (AARCH64_LDST_PCREL (insn) | |
3244 | || AARCH64_LDST_UI (insn) | |
3245 | || AARCH64_LDST_PIIMM (insn) | |
3246 | || AARCH64_LDST_U (insn) | |
3247 | || AARCH64_LDST_PREIMM (insn) | |
3248 | || AARCH64_LDST_RO (insn) | |
3249 | || AARCH64_LDST_UIMM (insn)) | |
3250 | { | |
3251 | *rt = AARCH64_RT (insn); | |
3d14faea | 3252 | *rt2 = *rt; |
68fcca92 JW |
3253 | if (AARCH64_LDST_PCREL (insn)) |
3254 | *load = TRUE; | |
3255 | opc = AARCH64_BITS (insn, 22, 2); | |
3256 | v = AARCH64_BIT (insn, 26); | |
3257 | opc_v = opc | (v << 2); | |
3258 | *load = (opc_v == 1 || opc_v == 2 || opc_v == 3 | |
3259 | || opc_v == 5 || opc_v == 7); | |
3260 | return TRUE; | |
3261 | } | |
3262 | else if (AARCH64_LDST_SIMD_M (insn) | |
3263 | || AARCH64_LDST_SIMD_M_PI (insn)) | |
3264 | { | |
3265 | *rt = AARCH64_RT (insn); | |
3266 | *load = AARCH64_BIT (insn, 22); | |
3267 | opcode = (insn >> 12) & 0xf; | |
3268 | switch (opcode) | |
3269 | { | |
3270 | case 0: | |
3271 | case 2: | |
3d14faea | 3272 | *rt2 = *rt + 3; |
68fcca92 JW |
3273 | break; |
3274 | ||
3275 | case 4: | |
3276 | case 6: | |
3d14faea | 3277 | *rt2 = *rt + 2; |
68fcca92 JW |
3278 | break; |
3279 | ||
3280 | case 7: | |
3d14faea | 3281 | *rt2 = *rt; |
68fcca92 JW |
3282 | break; |
3283 | ||
3284 | case 8: | |
3285 | case 10: | |
3d14faea | 3286 | *rt2 = *rt + 1; |
68fcca92 JW |
3287 | break; |
3288 | ||
3289 | default: | |
3290 | return FALSE; | |
3291 | } | |
3292 | return TRUE; | |
3293 | } | |
3294 | else if (AARCH64_LDST_SIMD_S (insn) | |
3295 | || AARCH64_LDST_SIMD_S_PI (insn)) | |
3296 | { | |
3297 | *rt = AARCH64_RT (insn); | |
3298 | r = (insn >> 21) & 1; | |
3299 | *load = AARCH64_BIT (insn, 22); | |
3300 | opcode = (insn >> 13) & 0x7; | |
3301 | switch (opcode) | |
3302 | { | |
3303 | case 0: | |
3304 | case 2: | |
3305 | case 4: | |
3d14faea | 3306 | *rt2 = *rt + r; |
68fcca92 JW |
3307 | break; |
3308 | ||
3309 | case 1: | |
3310 | case 3: | |
3311 | case 5: | |
3d14faea | 3312 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
3313 | break; |
3314 | ||
3315 | case 6: | |
3d14faea | 3316 | *rt2 = *rt + r; |
68fcca92 JW |
3317 | break; |
3318 | ||
3319 | case 7: | |
3d14faea | 3320 | *rt2 = *rt + (r == 0 ? 2 : 3); |
68fcca92 JW |
3321 | break; |
3322 | ||
3323 | default: | |
3324 | return FALSE; | |
3325 | } | |
3326 | return TRUE; | |
3327 | } | |
3328 | ||
3329 | return FALSE; | |
3330 | } | |
3331 | ||
3332 | /* Return TRUE if INSN is multiply-accumulate. */ | |
3333 | ||
3334 | static bfd_boolean | |
3335 | aarch64_mlxl_p (uint32_t insn) | |
3336 | { | |
3337 | uint32_t op31 = AARCH64_OP31 (insn); | |
3338 | ||
3339 | if (AARCH64_MAC (insn) | |
3340 | && (op31 == 0 || op31 == 1 || op31 == 5) | |
3341 | /* Exclude MUL instructions which are encoded as a multiple accumulate | |
3342 | with RA = XZR. */ | |
3343 | && AARCH64_RA (insn) != AARCH64_ZR) | |
3344 | return TRUE; | |
3345 | ||
3346 | return FALSE; | |
3347 | } | |
3348 | ||
3349 | /* Some early revisions of the Cortex-A53 have an erratum (835769) whereby | |
3350 | it is possible for a 64-bit multiply-accumulate instruction to generate an | |
3351 | incorrect result. The details are quite complex and hard to | |
3352 | determine statically, since branches in the code may exist in some | |
3353 | circumstances, but all cases end with a memory (load, store, or | |
3354 | prefetch) instruction followed immediately by the multiply-accumulate | |
3355 | operation. We employ a linker patching technique, by moving the potentially | |
3356 | affected multiply-accumulate instruction into a patch region and replacing | |
3357 | the original instruction with a branch to the patch. This function checks | |
3358 | if INSN_1 is the memory operation followed by a multiply-accumulate | |
3359 | operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE | |
3360 | if INSN_1 and INSN_2 are safe. */ | |
3361 | ||
3362 | static bfd_boolean | |
3363 | aarch64_erratum_sequence (uint32_t insn_1, uint32_t insn_2) | |
3364 | { | |
3365 | uint32_t rt; | |
3d14faea | 3366 | uint32_t rt2; |
68fcca92 JW |
3367 | uint32_t rn; |
3368 | uint32_t rm; | |
3369 | uint32_t ra; | |
3370 | bfd_boolean pair; | |
3371 | bfd_boolean load; | |
3372 | ||
3373 | if (aarch64_mlxl_p (insn_2) | |
3d14faea | 3374 | && aarch64_mem_op_p (insn_1, &rt, &rt2, &pair, &load)) |
68fcca92 JW |
3375 | { |
3376 | /* Any SIMD memory op is independent of the subsequent MLA | |
3377 | by definition of the erratum. */ | |
3378 | if (AARCH64_BIT (insn_1, 26)) | |
3379 | return TRUE; | |
3380 | ||
3381 | /* If not SIMD, check for integer memory ops and MLA relationship. */ | |
3382 | rn = AARCH64_RN (insn_2); | |
3383 | ra = AARCH64_RA (insn_2); | |
3384 | rm = AARCH64_RM (insn_2); | |
3385 | ||
3386 | /* If this is a load and there's a true(RAW) dependency, we are safe | |
3387 | and this is not an erratum sequence. */ | |
3388 | if (load && | |
3389 | (rt == rn || rt == rm || rt == ra | |
3d14faea | 3390 | || (pair && (rt2 == rn || rt2 == rm || rt2 == ra)))) |
68fcca92 JW |
3391 | return FALSE; |
3392 | ||
3393 | /* We conservatively put out stubs for all other cases (including | |
3394 | writebacks). */ | |
3395 | return TRUE; | |
3396 | } | |
3397 | ||
3398 | return FALSE; | |
3399 | } | |
3400 | ||
520c7b56 JW |
3401 | /* Used to order a list of mapping symbols by address. */ |
3402 | ||
3403 | static int | |
3404 | elf_aarch64_compare_mapping (const void *a, const void *b) | |
3405 | { | |
3406 | const elf_aarch64_section_map *amap = (const elf_aarch64_section_map *) a; | |
3407 | const elf_aarch64_section_map *bmap = (const elf_aarch64_section_map *) b; | |
3408 | ||
3409 | if (amap->vma > bmap->vma) | |
3410 | return 1; | |
3411 | else if (amap->vma < bmap->vma) | |
3412 | return -1; | |
3413 | else if (amap->type > bmap->type) | |
3414 | /* Ensure results do not depend on the host qsort for objects with | |
3415 | multiple mapping symbols at the same address by sorting on type | |
3416 | after vma. */ | |
3417 | return 1; | |
3418 | else if (amap->type < bmap->type) | |
3419 | return -1; | |
3420 | else | |
3421 | return 0; | |
3422 | } | |
3423 | ||
2144188d | 3424 | |
35fee8b7 MS |
3425 | static char * |
3426 | _bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes) | |
3427 | { | |
3428 | char *stub_name = (char *) bfd_malloc | |
3429 | (strlen ("__erratum_835769_veneer_") + 16); | |
3430 | sprintf (stub_name,"__erratum_835769_veneer_%d", num_fixes); | |
3431 | return stub_name; | |
3432 | } | |
3433 | ||
4106101c | 3434 | /* Scan for Cortex-A53 erratum 835769 sequence. |
2144188d MS |
3435 | |
3436 | Return TRUE else FALSE on abnormal termination. */ | |
3437 | ||
68fcca92 | 3438 | static bfd_boolean |
5421cc6e MS |
3439 | _bfd_aarch64_erratum_835769_scan (bfd *input_bfd, |
3440 | struct bfd_link_info *info, | |
3441 | unsigned int *num_fixes_p) | |
68fcca92 JW |
3442 | { |
3443 | asection *section; | |
3444 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
68fcca92 | 3445 | unsigned int num_fixes = *num_fixes_p; |
68fcca92 JW |
3446 | |
3447 | if (htab == NULL) | |
2144188d | 3448 | return TRUE; |
68fcca92 JW |
3449 | |
3450 | for (section = input_bfd->sections; | |
3451 | section != NULL; | |
3452 | section = section->next) | |
3453 | { | |
3454 | bfd_byte *contents = NULL; | |
3455 | struct _aarch64_elf_section_data *sec_data; | |
3456 | unsigned int span; | |
3457 | ||
3458 | if (elf_section_type (section) != SHT_PROGBITS | |
3459 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
3460 | || (section->flags & SEC_EXCLUDE) != 0 | |
3461 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
3462 | || (section->output_section == bfd_abs_section_ptr)) | |
3463 | continue; | |
3464 | ||
3465 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
3466 | contents = elf_section_data (section)->this_hdr.contents; | |
3467 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
2144188d | 3468 | return FALSE; |
68fcca92 JW |
3469 | |
3470 | sec_data = elf_aarch64_section_data (section); | |
520c7b56 JW |
3471 | |
3472 | qsort (sec_data->map, sec_data->mapcount, | |
3473 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
3474 | ||
68fcca92 JW |
3475 | for (span = 0; span < sec_data->mapcount; span++) |
3476 | { | |
3477 | unsigned int span_start = sec_data->map[span].vma; | |
3478 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
3479 | ? sec_data->map[0].vma + section->size | |
3480 | : sec_data->map[span + 1].vma); | |
3481 | unsigned int i; | |
3482 | char span_type = sec_data->map[span].type; | |
3483 | ||
3484 | if (span_type == 'd') | |
3485 | continue; | |
3486 | ||
3487 | for (i = span_start; i + 4 < span_end; i += 4) | |
3488 | { | |
3489 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
3490 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
3491 | ||
3492 | if (aarch64_erratum_sequence (insn_1, insn_2)) | |
3493 | { | |
5421cc6e | 3494 | struct elf_aarch64_stub_hash_entry *stub_entry; |
35fee8b7 MS |
3495 | char *stub_name = _bfd_aarch64_erratum_835769_stub_name (num_fixes); |
3496 | if (! stub_name) | |
2144188d | 3497 | return FALSE; |
68fcca92 | 3498 | |
5421cc6e MS |
3499 | stub_entry = _bfd_aarch64_add_stub_entry_in_group (stub_name, |
3500 | section, | |
3501 | htab); | |
3502 | if (! stub_entry) | |
3503 | return FALSE; | |
68fcca92 | 3504 | |
5421cc6e MS |
3505 | stub_entry->stub_type = aarch64_stub_erratum_835769_veneer; |
3506 | stub_entry->target_section = section; | |
3507 | stub_entry->target_value = i + 4; | |
3508 | stub_entry->veneered_insn = insn_2; | |
3509 | stub_entry->output_name = stub_name; | |
68fcca92 JW |
3510 | num_fixes++; |
3511 | } | |
3512 | } | |
3513 | } | |
3514 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
3515 | free (contents); | |
3516 | } | |
3517 | ||
357d1523 MS |
3518 | *num_fixes_p = num_fixes; |
3519 | ||
2144188d | 3520 | return TRUE; |
68fcca92 JW |
3521 | } |
3522 | ||
13f622ec | 3523 | |
4106101c MS |
3524 | /* Test if instruction INSN is ADRP. */ |
3525 | ||
3526 | static bfd_boolean | |
3527 | _bfd_aarch64_adrp_p (uint32_t insn) | |
3528 | { | |
3529 | return ((insn & 0x9f000000) == 0x90000000); | |
3530 | } | |
3531 | ||
3532 | ||
3533 | /* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */ | |
3534 | ||
3535 | static bfd_boolean | |
3536 | _bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1, uint32_t insn_2, | |
3537 | uint32_t insn_3) | |
3538 | { | |
3539 | uint32_t rt; | |
3540 | uint32_t rt2; | |
3541 | bfd_boolean pair; | |
3542 | bfd_boolean load; | |
3543 | ||
3544 | return (aarch64_mem_op_p (insn_2, &rt, &rt2, &pair, &load) | |
3545 | && (!pair | |
3546 | || (pair && !load)) | |
3547 | && AARCH64_LDST_UIMM (insn_3) | |
3548 | && AARCH64_RN (insn_3) == AARCH64_RD (insn_1)); | |
3549 | } | |
3550 | ||
3551 | ||
3552 | /* Test for the presence of Cortex-A53 erratum 843419 instruction sequence. | |
3553 | ||
3554 | Return TRUE if section CONTENTS at offset I contains one of the | |
3555 | erratum 843419 sequences, otherwise return FALSE. If a sequence is | |
3556 | seen set P_VENEER_I to the offset of the final LOAD/STORE | |
3557 | instruction in the sequence. | |
3558 | */ | |
3559 | ||
3560 | static bfd_boolean | |
3561 | _bfd_aarch64_erratum_843419_p (bfd_byte *contents, bfd_vma vma, | |
3562 | bfd_vma i, bfd_vma span_end, | |
3563 | bfd_vma *p_veneer_i) | |
3564 | { | |
3565 | uint32_t insn_1 = bfd_getl32 (contents + i); | |
3566 | ||
3567 | if (!_bfd_aarch64_adrp_p (insn_1)) | |
3568 | return FALSE; | |
3569 | ||
3570 | if (span_end < i + 12) | |
3571 | return FALSE; | |
3572 | ||
3573 | uint32_t insn_2 = bfd_getl32 (contents + i + 4); | |
3574 | uint32_t insn_3 = bfd_getl32 (contents + i + 8); | |
3575 | ||
3576 | if ((vma & 0xfff) != 0xff8 && (vma & 0xfff) != 0xffc) | |
3577 | return FALSE; | |
3578 | ||
3579 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_3)) | |
3580 | { | |
3581 | *p_veneer_i = i + 8; | |
3582 | return TRUE; | |
3583 | } | |
3584 | ||
3585 | if (span_end < i + 16) | |
3586 | return FALSE; | |
3587 | ||
3588 | uint32_t insn_4 = bfd_getl32 (contents + i + 12); | |
3589 | ||
3590 | if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_4)) | |
3591 | { | |
3592 | *p_veneer_i = i + 12; | |
3593 | return TRUE; | |
3594 | } | |
3595 | ||
3596 | return FALSE; | |
3597 | } | |
3598 | ||
3599 | ||
13f622ec MS |
3600 | /* Resize all stub sections. */ |
3601 | ||
3602 | static void | |
3603 | _bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table *htab) | |
3604 | { | |
3605 | asection *section; | |
3606 | ||
3607 | /* OK, we've added some stubs. Find out the new size of the | |
3608 | stub sections. */ | |
3609 | for (section = htab->stub_bfd->sections; | |
3610 | section != NULL; section = section->next) | |
3611 | { | |
3612 | /* Ignore non-stub sections. */ | |
3613 | if (!strstr (section->name, STUB_SUFFIX)) | |
3614 | continue; | |
3615 | section->size = 0; | |
3616 | } | |
3617 | ||
3618 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab); | |
13f622ec | 3619 | |
61865519 MS |
3620 | for (section = htab->stub_bfd->sections; |
3621 | section != NULL; section = section->next) | |
3622 | { | |
3623 | if (!strstr (section->name, STUB_SUFFIX)) | |
3624 | continue; | |
3625 | ||
3626 | if (section->size) | |
3627 | section->size += 4; | |
4106101c MS |
3628 | |
3629 | /* Ensure all stub sections have a size which is a multiple of | |
3630 | 4096. This is important in order to ensure that the insertion | |
3631 | of stub sections does not in itself move existing code around | |
3632 | in such a way that new errata sequences are created. */ | |
3633 | if (htab->fix_erratum_843419) | |
3634 | if (section->size) | |
3635 | section->size = BFD_ALIGN (section->size, 0x1000); | |
3636 | } | |
3637 | } | |
3638 | ||
3639 | ||
3640 | /* Construct an erratum 843419 workaround stub name. | |
3641 | */ | |
3642 | ||
3643 | static char * | |
3644 | _bfd_aarch64_erratum_843419_stub_name (asection *input_section, | |
3645 | bfd_vma offset) | |
3646 | { | |
3647 | const bfd_size_type len = 8 + 4 + 1 + 8 + 1 + 16 + 1; | |
3648 | char *stub_name = bfd_malloc (len); | |
3649 | ||
3650 | if (stub_name != NULL) | |
3651 | snprintf (stub_name, len, "e843419@%04x_%08x_%" BFD_VMA_FMT "x", | |
3652 | input_section->owner->id, | |
3653 | input_section->id, | |
3654 | offset); | |
3655 | return stub_name; | |
3656 | } | |
3657 | ||
3658 | /* Build a stub_entry structure describing an 843419 fixup. | |
3659 | ||
3660 | The stub_entry constructed is populated with the bit pattern INSN | |
3661 | of the instruction located at OFFSET within input SECTION. | |
3662 | ||
3663 | Returns TRUE on success. */ | |
3664 | ||
3665 | static bfd_boolean | |
3666 | _bfd_aarch64_erratum_843419_fixup (uint32_t insn, | |
3667 | bfd_vma adrp_offset, | |
3668 | bfd_vma ldst_offset, | |
3669 | asection *section, | |
3670 | struct bfd_link_info *info) | |
3671 | { | |
3672 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
3673 | char *stub_name; | |
3674 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
3675 | ||
3676 | stub_name = _bfd_aarch64_erratum_843419_stub_name (section, ldst_offset); | |
3677 | stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
3678 | FALSE, FALSE); | |
3679 | if (stub_entry) | |
3680 | { | |
3681 | free (stub_name); | |
3682 | return TRUE; | |
3683 | } | |
3684 | ||
3685 | /* We always place an 843419 workaround veneer in the stub section | |
3686 | attached to the input section in which an erratum sequence has | |
3687 | been found. This ensures that later in the link process (in | |
3688 | elfNN_aarch64_write_section) when we copy the veneered | |
3689 | instruction from the input section into the stub section the | |
3690 | copied instruction will have had any relocations applied to it. | |
3691 | If we placed workaround veneers in any other stub section then we | |
3692 | could not assume that all relocations have been processed on the | |
3693 | corresponding input section at the point we output the stub | |
3694 | section. | |
3695 | */ | |
3696 | ||
3697 | stub_entry = _bfd_aarch64_add_stub_entry_after (stub_name, section, htab); | |
3698 | if (stub_entry == NULL) | |
3699 | { | |
3700 | free (stub_name); | |
3701 | return FALSE; | |
3702 | } | |
3703 | ||
3704 | stub_entry->adrp_offset = adrp_offset; | |
3705 | stub_entry->target_value = ldst_offset; | |
3706 | stub_entry->target_section = section; | |
3707 | stub_entry->stub_type = aarch64_stub_erratum_843419_veneer; | |
3708 | stub_entry->veneered_insn = insn; | |
3709 | stub_entry->output_name = stub_name; | |
3710 | ||
3711 | return TRUE; | |
3712 | } | |
3713 | ||
3714 | ||
3715 | /* Scan an input section looking for the signature of erratum 843419. | |
3716 | ||
3717 | Scans input SECTION in INPUT_BFD looking for erratum 843419 | |
3718 | signatures, for each signature found a stub_entry is created | |
3719 | describing the location of the erratum for subsequent fixup. | |
3720 | ||
3721 | Return TRUE on successful scan, FALSE on failure to scan. | |
3722 | */ | |
3723 | ||
3724 | static bfd_boolean | |
3725 | _bfd_aarch64_erratum_843419_scan (bfd *input_bfd, asection *section, | |
3726 | struct bfd_link_info *info) | |
3727 | { | |
3728 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); | |
3729 | ||
3730 | if (htab == NULL) | |
3731 | return TRUE; | |
3732 | ||
3733 | if (elf_section_type (section) != SHT_PROGBITS | |
3734 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
3735 | || (section->flags & SEC_EXCLUDE) != 0 | |
3736 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
3737 | || (section->output_section == bfd_abs_section_ptr)) | |
3738 | return TRUE; | |
3739 | ||
3740 | do | |
3741 | { | |
3742 | bfd_byte *contents = NULL; | |
3743 | struct _aarch64_elf_section_data *sec_data; | |
3744 | unsigned int span; | |
3745 | ||
3746 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
3747 | contents = elf_section_data (section)->this_hdr.contents; | |
3748 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
3749 | return FALSE; | |
3750 | ||
3751 | sec_data = elf_aarch64_section_data (section); | |
3752 | ||
3753 | qsort (sec_data->map, sec_data->mapcount, | |
3754 | sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping); | |
3755 | ||
3756 | for (span = 0; span < sec_data->mapcount; span++) | |
3757 | { | |
3758 | unsigned int span_start = sec_data->map[span].vma; | |
3759 | unsigned int span_end = ((span == sec_data->mapcount - 1) | |
3760 | ? sec_data->map[0].vma + section->size | |
3761 | : sec_data->map[span + 1].vma); | |
3762 | unsigned int i; | |
3763 | char span_type = sec_data->map[span].type; | |
3764 | ||
3765 | if (span_type == 'd') | |
3766 | continue; | |
3767 | ||
3768 | for (i = span_start; i + 8 < span_end; i += 4) | |
3769 | { | |
3770 | bfd_vma vma = (section->output_section->vma | |
3771 | + section->output_offset | |
3772 | + i); | |
3773 | bfd_vma veneer_i; | |
3774 | ||
3775 | if (_bfd_aarch64_erratum_843419_p | |
3776 | (contents, vma, i, span_end, &veneer_i)) | |
3777 | { | |
3778 | uint32_t insn = bfd_getl32 (contents + veneer_i); | |
3779 | ||
3780 | if (!_bfd_aarch64_erratum_843419_fixup (insn, i, veneer_i, | |
3781 | section, info)) | |
3782 | return FALSE; | |
3783 | } | |
3784 | } | |
3785 | } | |
3786 | ||
3787 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
3788 | free (contents); | |
61865519 | 3789 | } |
4106101c MS |
3790 | while (0); |
3791 | ||
3792 | return TRUE; | |
61865519 | 3793 | } |
13f622ec | 3794 | |
4106101c | 3795 | |
a06ea964 NC |
3796 | /* Determine and set the size of the stub section for a final link. |
3797 | ||
3798 | The basic idea here is to examine all the relocations looking for | |
3799 | PC-relative calls to a target that is unreachable with a "bl" | |
3800 | instruction. */ | |
3801 | ||
3802 | bfd_boolean | |
cec5225b | 3803 | elfNN_aarch64_size_stubs (bfd *output_bfd, |
a06ea964 NC |
3804 | bfd *stub_bfd, |
3805 | struct bfd_link_info *info, | |
3806 | bfd_signed_vma group_size, | |
3807 | asection * (*add_stub_section) (const char *, | |
3808 | asection *), | |
3809 | void (*layout_sections_again) (void)) | |
3810 | { | |
3811 | bfd_size_type stub_group_size; | |
3812 | bfd_boolean stubs_always_before_branch; | |
5421cc6e | 3813 | bfd_boolean stub_changed = FALSE; |
cec5225b | 3814 | struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info); |
68fcca92 | 3815 | unsigned int num_erratum_835769_fixes = 0; |
a06ea964 NC |
3816 | |
3817 | /* Propagate mach to stub bfd, because it may not have been | |
3818 | finalized when we created stub_bfd. */ | |
3819 | bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd), | |
3820 | bfd_get_mach (output_bfd)); | |
3821 | ||
3822 | /* Stash our params away. */ | |
3823 | htab->stub_bfd = stub_bfd; | |
3824 | htab->add_stub_section = add_stub_section; | |
3825 | htab->layout_sections_again = layout_sections_again; | |
3826 | stubs_always_before_branch = group_size < 0; | |
3827 | if (group_size < 0) | |
3828 | stub_group_size = -group_size; | |
3829 | else | |
3830 | stub_group_size = group_size; | |
3831 | ||
3832 | if (stub_group_size == 1) | |
3833 | { | |
3834 | /* Default values. */ | |
b9eead84 | 3835 | /* AArch64 branch range is +-128MB. The value used is 1MB less. */ |
a06ea964 NC |
3836 | stub_group_size = 127 * 1024 * 1024; |
3837 | } | |
3838 | ||
3839 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
3840 | ||
4106101c MS |
3841 | (*htab->layout_sections_again) (); |
3842 | ||
5421cc6e MS |
3843 | if (htab->fix_erratum_835769) |
3844 | { | |
3845 | bfd *input_bfd; | |
3846 | ||
3847 | for (input_bfd = info->input_bfds; | |
3848 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
3849 | if (!_bfd_aarch64_erratum_835769_scan (input_bfd, info, | |
3850 | &num_erratum_835769_fixes)) | |
3851 | return FALSE; | |
3852 | ||
4106101c MS |
3853 | _bfd_aarch64_resize_stubs (htab); |
3854 | (*htab->layout_sections_again) (); | |
3855 | } | |
3856 | ||
3857 | if (htab->fix_erratum_843419) | |
3858 | { | |
3859 | bfd *input_bfd; | |
3860 | ||
3861 | for (input_bfd = info->input_bfds; | |
3862 | input_bfd != NULL; | |
3863 | input_bfd = input_bfd->link.next) | |
3864 | { | |
3865 | asection *section; | |
3866 | ||
3867 | for (section = input_bfd->sections; | |
3868 | section != NULL; | |
3869 | section = section->next) | |
3870 | if (!_bfd_aarch64_erratum_843419_scan (input_bfd, section, info)) | |
3871 | return FALSE; | |
3872 | } | |
3873 | ||
3874 | _bfd_aarch64_resize_stubs (htab); | |
3875 | (*htab->layout_sections_again) (); | |
5421cc6e MS |
3876 | } |
3877 | ||
a06ea964 NC |
3878 | while (1) |
3879 | { | |
3880 | bfd *input_bfd; | |
a06ea964 | 3881 | |
9b9971aa MS |
3882 | for (input_bfd = info->input_bfds; |
3883 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
a06ea964 NC |
3884 | { |
3885 | Elf_Internal_Shdr *symtab_hdr; | |
3886 | asection *section; | |
3887 | Elf_Internal_Sym *local_syms = NULL; | |
3888 | ||
3889 | /* We'll need the symbol table in a second. */ | |
3890 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3891 | if (symtab_hdr->sh_info == 0) | |
3892 | continue; | |
3893 | ||
3894 | /* Walk over each section attached to the input bfd. */ | |
3895 | for (section = input_bfd->sections; | |
3896 | section != NULL; section = section->next) | |
3897 | { | |
3898 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
3899 | ||
3900 | /* If there aren't any relocs, then there's nothing more | |
3901 | to do. */ | |
3902 | if ((section->flags & SEC_RELOC) == 0 | |
3903 | || section->reloc_count == 0 | |
3904 | || (section->flags & SEC_CODE) == 0) | |
3905 | continue; | |
3906 | ||
3907 | /* If this section is a link-once section that will be | |
3908 | discarded, then don't create any stubs. */ | |
3909 | if (section->output_section == NULL | |
3910 | || section->output_section->owner != output_bfd) | |
3911 | continue; | |
3912 | ||
3913 | /* Get the relocs. */ | |
3914 | internal_relocs | |
3915 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, | |
3916 | NULL, info->keep_memory); | |
3917 | if (internal_relocs == NULL) | |
3918 | goto error_ret_free_local; | |
3919 | ||
3920 | /* Now examine each relocation. */ | |
3921 | irela = internal_relocs; | |
3922 | irelaend = irela + section->reloc_count; | |
3923 | for (; irela < irelaend; irela++) | |
3924 | { | |
3925 | unsigned int r_type, r_indx; | |
cec5225b YZ |
3926 | enum elf_aarch64_stub_type stub_type; |
3927 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
a06ea964 NC |
3928 | asection *sym_sec; |
3929 | bfd_vma sym_value; | |
3930 | bfd_vma destination; | |
cec5225b | 3931 | struct elf_aarch64_link_hash_entry *hash; |
a06ea964 NC |
3932 | const char *sym_name; |
3933 | char *stub_name; | |
3934 | const asection *id_sec; | |
3935 | unsigned char st_type; | |
3936 | bfd_size_type len; | |
3937 | ||
cec5225b YZ |
3938 | r_type = ELFNN_R_TYPE (irela->r_info); |
3939 | r_indx = ELFNN_R_SYM (irela->r_info); | |
a06ea964 NC |
3940 | |
3941 | if (r_type >= (unsigned int) R_AARCH64_end) | |
3942 | { | |
3943 | bfd_set_error (bfd_error_bad_value); | |
3944 | error_ret_free_internal: | |
3945 | if (elf_section_data (section)->relocs == NULL) | |
3946 | free (internal_relocs); | |
3947 | goto error_ret_free_local; | |
3948 | } | |
3949 | ||
3950 | /* Only look for stubs on unconditional branch and | |
3951 | branch and link instructions. */ | |
a6bb11b2 YZ |
3952 | if (r_type != (unsigned int) AARCH64_R (CALL26) |
3953 | && r_type != (unsigned int) AARCH64_R (JUMP26)) | |
a06ea964 NC |
3954 | continue; |
3955 | ||
3956 | /* Now determine the call target, its name, value, | |
3957 | section. */ | |
3958 | sym_sec = NULL; | |
3959 | sym_value = 0; | |
3960 | destination = 0; | |
3961 | hash = NULL; | |
3962 | sym_name = NULL; | |
3963 | if (r_indx < symtab_hdr->sh_info) | |
3964 | { | |
3965 | /* It's a local symbol. */ | |
3966 | Elf_Internal_Sym *sym; | |
3967 | Elf_Internal_Shdr *hdr; | |
3968 | ||
3969 | if (local_syms == NULL) | |
3970 | { | |
3971 | local_syms | |
3972 | = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3973 | if (local_syms == NULL) | |
3974 | local_syms | |
3975 | = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
3976 | symtab_hdr->sh_info, 0, | |
3977 | NULL, NULL, NULL); | |
3978 | if (local_syms == NULL) | |
3979 | goto error_ret_free_internal; | |
3980 | } | |
3981 | ||
3982 | sym = local_syms + r_indx; | |
3983 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
3984 | sym_sec = hdr->bfd_section; | |
3985 | if (!sym_sec) | |
3986 | /* This is an undefined symbol. It can never | |
3987 | be resolved. */ | |
3988 | continue; | |
3989 | ||
3990 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
3991 | sym_value = sym->st_value; | |
3992 | destination = (sym_value + irela->r_addend | |
3993 | + sym_sec->output_offset | |
3994 | + sym_sec->output_section->vma); | |
3995 | st_type = ELF_ST_TYPE (sym->st_info); | |
3996 | sym_name | |
3997 | = bfd_elf_string_from_elf_section (input_bfd, | |
3998 | symtab_hdr->sh_link, | |
3999 | sym->st_name); | |
4000 | } | |
4001 | else | |
4002 | { | |
4003 | int e_indx; | |
4004 | ||
4005 | e_indx = r_indx - symtab_hdr->sh_info; | |
cec5225b | 4006 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
4007 | elf_sym_hashes (input_bfd)[e_indx]); |
4008 | ||
4009 | while (hash->root.root.type == bfd_link_hash_indirect | |
4010 | || hash->root.root.type == bfd_link_hash_warning) | |
cec5225b | 4011 | hash = ((struct elf_aarch64_link_hash_entry *) |
a06ea964 NC |
4012 | hash->root.root.u.i.link); |
4013 | ||
4014 | if (hash->root.root.type == bfd_link_hash_defined | |
4015 | || hash->root.root.type == bfd_link_hash_defweak) | |
4016 | { | |
cec5225b YZ |
4017 | struct elf_aarch64_link_hash_table *globals = |
4018 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
4019 | sym_sec = hash->root.root.u.def.section; |
4020 | sym_value = hash->root.root.u.def.value; | |
4021 | /* For a destination in a shared library, | |
4022 | use the PLT stub as target address to | |
4023 | decide whether a branch stub is | |
4024 | needed. */ | |
4025 | if (globals->root.splt != NULL && hash != NULL | |
4026 | && hash->root.plt.offset != (bfd_vma) - 1) | |
4027 | { | |
4028 | sym_sec = globals->root.splt; | |
4029 | sym_value = hash->root.plt.offset; | |
4030 | if (sym_sec->output_section != NULL) | |
4031 | destination = (sym_value | |
4032 | + sym_sec->output_offset | |
4033 | + | |
4034 | sym_sec->output_section->vma); | |
4035 | } | |
4036 | else if (sym_sec->output_section != NULL) | |
4037 | destination = (sym_value + irela->r_addend | |
4038 | + sym_sec->output_offset | |
4039 | + sym_sec->output_section->vma); | |
4040 | } | |
4041 | else if (hash->root.root.type == bfd_link_hash_undefined | |
4042 | || (hash->root.root.type | |
4043 | == bfd_link_hash_undefweak)) | |
4044 | { | |
4045 | /* For a shared library, use the PLT stub as | |
4046 | target address to decide whether a long | |
4047 | branch stub is needed. | |
4048 | For absolute code, they cannot be handled. */ | |
cec5225b YZ |
4049 | struct elf_aarch64_link_hash_table *globals = |
4050 | elf_aarch64_hash_table (info); | |
a06ea964 NC |
4051 | |
4052 | if (globals->root.splt != NULL && hash != NULL | |
4053 | && hash->root.plt.offset != (bfd_vma) - 1) | |
4054 | { | |
4055 | sym_sec = globals->root.splt; | |
4056 | sym_value = hash->root.plt.offset; | |
4057 | if (sym_sec->output_section != NULL) | |
4058 | destination = (sym_value | |
4059 | + sym_sec->output_offset | |
4060 | + | |
4061 | sym_sec->output_section->vma); | |
4062 | } | |
4063 | else | |
4064 | continue; | |
4065 | } | |
4066 | else | |
4067 | { | |
4068 | bfd_set_error (bfd_error_bad_value); | |
4069 | goto error_ret_free_internal; | |
4070 | } | |
4071 | st_type = ELF_ST_TYPE (hash->root.type); | |
4072 | sym_name = hash->root.root.root.string; | |
4073 | } | |
4074 | ||
4075 | /* Determine what (if any) linker stub is needed. */ | |
4076 | stub_type = aarch64_type_of_stub | |
f678ded7 | 4077 | (info, section, irela, sym_sec, st_type, hash, destination); |
a06ea964 NC |
4078 | if (stub_type == aarch64_stub_none) |
4079 | continue; | |
4080 | ||
4081 | /* Support for grouping stub sections. */ | |
4082 | id_sec = htab->stub_group[section->id].link_sec; | |
4083 | ||
4084 | /* Get the name of this stub. */ | |
cec5225b | 4085 | stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, hash, |
a06ea964 NC |
4086 | irela); |
4087 | if (!stub_name) | |
4088 | goto error_ret_free_internal; | |
4089 | ||
4090 | stub_entry = | |
4091 | aarch64_stub_hash_lookup (&htab->stub_hash_table, | |
4092 | stub_name, FALSE, FALSE); | |
4093 | if (stub_entry != NULL) | |
4094 | { | |
4095 | /* The proper stub has already been created. */ | |
4096 | free (stub_name); | |
4097 | continue; | |
4098 | } | |
4099 | ||
ef857521 MS |
4100 | stub_entry = _bfd_aarch64_add_stub_entry_in_group |
4101 | (stub_name, section, htab); | |
a06ea964 NC |
4102 | if (stub_entry == NULL) |
4103 | { | |
4104 | free (stub_name); | |
4105 | goto error_ret_free_internal; | |
4106 | } | |
4107 | ||
4108 | stub_entry->target_value = sym_value; | |
4109 | stub_entry->target_section = sym_sec; | |
4110 | stub_entry->stub_type = stub_type; | |
4111 | stub_entry->h = hash; | |
4112 | stub_entry->st_type = st_type; | |
4113 | ||
4114 | if (sym_name == NULL) | |
4115 | sym_name = "unnamed"; | |
4116 | len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name); | |
4117 | stub_entry->output_name = bfd_alloc (htab->stub_bfd, len); | |
4118 | if (stub_entry->output_name == NULL) | |
4119 | { | |
4120 | free (stub_name); | |
4121 | goto error_ret_free_internal; | |
4122 | } | |
4123 | ||
4124 | snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME, | |
4125 | sym_name); | |
4126 | ||
4127 | stub_changed = TRUE; | |
4128 | } | |
4129 | ||
4130 | /* We're done with the internal relocs, free them. */ | |
4131 | if (elf_section_data (section)->relocs == NULL) | |
4132 | free (internal_relocs); | |
4133 | } | |
4134 | } | |
4135 | ||
4136 | if (!stub_changed) | |
4137 | break; | |
4138 | ||
13f622ec | 4139 | _bfd_aarch64_resize_stubs (htab); |
a06ea964 NC |
4140 | |
4141 | /* Ask the linker to do its stuff. */ | |
4142 | (*htab->layout_sections_again) (); | |
4143 | stub_changed = FALSE; | |
4144 | } | |
4145 | ||
4146 | return TRUE; | |
4147 | ||
4148 | error_ret_free_local: | |
4149 | return FALSE; | |
4150 | } | |
4151 | ||
4152 | /* Build all the stubs associated with the current output file. The | |
4153 | stubs are kept in a hash table attached to the main linker hash | |
4154 | table. We also set up the .plt entries for statically linked PIC | |
4155 | functions here. This function is called via aarch64_elf_finish in the | |
4156 | linker. */ | |
4157 | ||
4158 | bfd_boolean | |
cec5225b | 4159 | elfNN_aarch64_build_stubs (struct bfd_link_info *info) |
a06ea964 NC |
4160 | { |
4161 | asection *stub_sec; | |
4162 | struct bfd_hash_table *table; | |
cec5225b | 4163 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 4164 | |
cec5225b | 4165 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
4166 | |
4167 | for (stub_sec = htab->stub_bfd->sections; | |
4168 | stub_sec != NULL; stub_sec = stub_sec->next) | |
4169 | { | |
4170 | bfd_size_type size; | |
4171 | ||
4172 | /* Ignore non-stub sections. */ | |
4173 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
4174 | continue; | |
4175 | ||
4176 | /* Allocate memory to hold the linker stubs. */ | |
4177 | size = stub_sec->size; | |
4178 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); | |
4179 | if (stub_sec->contents == NULL && size != 0) | |
4180 | return FALSE; | |
4181 | stub_sec->size = 0; | |
61865519 MS |
4182 | |
4183 | bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents); | |
4184 | stub_sec->size += 4; | |
a06ea964 NC |
4185 | } |
4186 | ||
4187 | /* Build the stubs as directed by the stub hash table. */ | |
4188 | table = &htab->stub_hash_table; | |
4189 | bfd_hash_traverse (table, aarch64_build_one_stub, info); | |
4190 | ||
4191 | return TRUE; | |
4192 | } | |
4193 | ||
4194 | ||
4195 | /* Add an entry to the code/data map for section SEC. */ | |
4196 | ||
4197 | static void | |
cec5225b | 4198 | elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma) |
a06ea964 NC |
4199 | { |
4200 | struct _aarch64_elf_section_data *sec_data = | |
cec5225b | 4201 | elf_aarch64_section_data (sec); |
a06ea964 NC |
4202 | unsigned int newidx; |
4203 | ||
4204 | if (sec_data->map == NULL) | |
4205 | { | |
cec5225b | 4206 | sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
4207 | sec_data->mapcount = 0; |
4208 | sec_data->mapsize = 1; | |
4209 | } | |
4210 | ||
4211 | newidx = sec_data->mapcount++; | |
4212 | ||
4213 | if (sec_data->mapcount > sec_data->mapsize) | |
4214 | { | |
4215 | sec_data->mapsize *= 2; | |
4216 | sec_data->map = bfd_realloc_or_free | |
cec5225b | 4217 | (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map)); |
a06ea964 NC |
4218 | } |
4219 | ||
4220 | if (sec_data->map) | |
4221 | { | |
4222 | sec_data->map[newidx].vma = vma; | |
4223 | sec_data->map[newidx].type = type; | |
4224 | } | |
4225 | } | |
4226 | ||
4227 | ||
4228 | /* Initialise maps of insn/data for input BFDs. */ | |
4229 | void | |
cec5225b | 4230 | bfd_elfNN_aarch64_init_maps (bfd *abfd) |
a06ea964 NC |
4231 | { |
4232 | Elf_Internal_Sym *isymbuf; | |
4233 | Elf_Internal_Shdr *hdr; | |
4234 | unsigned int i, localsyms; | |
4235 | ||
4236 | /* Make sure that we are dealing with an AArch64 elf binary. */ | |
4237 | if (!is_aarch64_elf (abfd)) | |
4238 | return; | |
4239 | ||
4240 | if ((abfd->flags & DYNAMIC) != 0) | |
68fcca92 | 4241 | return; |
a06ea964 NC |
4242 | |
4243 | hdr = &elf_symtab_hdr (abfd); | |
4244 | localsyms = hdr->sh_info; | |
4245 | ||
4246 | /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field | |
4247 | should contain the number of local symbols, which should come before any | |
4248 | global symbols. Mapping symbols are always local. */ | |
4249 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL); | |
4250 | ||
4251 | /* No internal symbols read? Skip this BFD. */ | |
4252 | if (isymbuf == NULL) | |
4253 | return; | |
4254 | ||
4255 | for (i = 0; i < localsyms; i++) | |
4256 | { | |
4257 | Elf_Internal_Sym *isym = &isymbuf[i]; | |
4258 | asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4259 | const char *name; | |
4260 | ||
4261 | if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL) | |
4262 | { | |
4263 | name = bfd_elf_string_from_elf_section (abfd, | |
4264 | hdr->sh_link, | |
4265 | isym->st_name); | |
4266 | ||
4267 | if (bfd_is_aarch64_special_symbol_name | |
4268 | (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP)) | |
cec5225b | 4269 | elfNN_aarch64_section_map_add (sec, name[1], isym->st_value); |
a06ea964 NC |
4270 | } |
4271 | } | |
4272 | } | |
4273 | ||
4274 | /* Set option values needed during linking. */ | |
4275 | void | |
cec5225b | 4276 | bfd_elfNN_aarch64_set_options (struct bfd *output_bfd, |
a06ea964 NC |
4277 | struct bfd_link_info *link_info, |
4278 | int no_enum_warn, | |
68fcca92 | 4279 | int no_wchar_warn, int pic_veneer, |
4106101c MS |
4280 | int fix_erratum_835769, |
4281 | int fix_erratum_843419) | |
a06ea964 | 4282 | { |
cec5225b | 4283 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 4284 | |
cec5225b | 4285 | globals = elf_aarch64_hash_table (link_info); |
a06ea964 | 4286 | globals->pic_veneer = pic_veneer; |
68fcca92 | 4287 | globals->fix_erratum_835769 = fix_erratum_835769; |
4106101c MS |
4288 | globals->fix_erratum_843419 = fix_erratum_843419; |
4289 | globals->fix_erratum_843419_adr = TRUE; | |
a06ea964 NC |
4290 | |
4291 | BFD_ASSERT (is_aarch64_elf (output_bfd)); | |
4292 | elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn; | |
4293 | elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn; | |
4294 | } | |
4295 | ||
a06ea964 NC |
4296 | static bfd_vma |
4297 | aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h, | |
cec5225b | 4298 | struct elf_aarch64_link_hash_table |
a06ea964 NC |
4299 | *globals, struct bfd_link_info *info, |
4300 | bfd_vma value, bfd *output_bfd, | |
4301 | bfd_boolean *unresolved_reloc_p) | |
4302 | { | |
4303 | bfd_vma off = (bfd_vma) - 1; | |
4304 | asection *basegot = globals->root.sgot; | |
4305 | bfd_boolean dyn = globals->root.dynamic_sections_created; | |
4306 | ||
4307 | if (h != NULL) | |
4308 | { | |
a6bb11b2 | 4309 | BFD_ASSERT (basegot != NULL); |
a06ea964 NC |
4310 | off = h->got.offset; |
4311 | BFD_ASSERT (off != (bfd_vma) - 1); | |
0e1862bb L |
4312 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h) |
4313 | || (bfd_link_pic (info) | |
a06ea964 NC |
4314 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
4315 | || (ELF_ST_VISIBILITY (h->other) | |
4316 | && h->root.type == bfd_link_hash_undefweak)) | |
4317 | { | |
4318 | /* This is actually a static link, or it is a -Bsymbolic link | |
4319 | and the symbol is defined locally. We must initialize this | |
4320 | entry in the global offset table. Since the offset must | |
a6bb11b2 YZ |
4321 | always be a multiple of 8 (4 in the case of ILP32), we use |
4322 | the least significant bit to record whether we have | |
4323 | initialized it already. | |
a06ea964 NC |
4324 | When doing a dynamic link, we create a .rel(a).got relocation |
4325 | entry to initialize the value. This is done in the | |
4326 | finish_dynamic_symbol routine. */ | |
4327 | if ((off & 1) != 0) | |
4328 | off &= ~1; | |
4329 | else | |
4330 | { | |
cec5225b | 4331 | bfd_put_NN (output_bfd, value, basegot->contents + off); |
a06ea964 NC |
4332 | h->got.offset |= 1; |
4333 | } | |
4334 | } | |
4335 | else | |
4336 | *unresolved_reloc_p = FALSE; | |
4337 | ||
4338 | off = off + basegot->output_section->vma + basegot->output_offset; | |
4339 | } | |
4340 | ||
4341 | return off; | |
4342 | } | |
4343 | ||
4344 | /* Change R_TYPE to a more efficient access model where possible, | |
4345 | return the new reloc type. */ | |
4346 | ||
a6bb11b2 YZ |
4347 | static bfd_reloc_code_real_type |
4348 | aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type, | |
a06ea964 NC |
4349 | struct elf_link_hash_entry *h) |
4350 | { | |
4351 | bfd_boolean is_local = h == NULL; | |
a6bb11b2 | 4352 | |
a06ea964 NC |
4353 | switch (r_type) |
4354 | { | |
a6bb11b2 | 4355 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 4356 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a6bb11b2 YZ |
4357 | return (is_local |
4358 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4359 | : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21); | |
4360 | ||
389b8029 MS |
4361 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
4362 | return (is_local | |
4363 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4364 | : r_type); | |
4365 | ||
1ada945d MS |
4366 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
4367 | return (is_local | |
4368 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 | |
4369 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4370 | ||
a6bb11b2 | 4371 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
ce336788 | 4372 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 YZ |
4373 | return (is_local |
4374 | ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC | |
4375 | : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC); | |
4376 | ||
4377 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: | |
4378 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type; | |
4379 | ||
4380 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
4381 | return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type; | |
4382 | ||
043bf05a MS |
4383 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
4384 | return r_type; | |
4385 | ||
3c12b054 MS |
4386 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
4387 | return (is_local | |
4388 | ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 | |
4389 | : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19); | |
4390 | ||
a6bb11b2 YZ |
4391 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
4392 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
a06ea964 | 4393 | /* Instructions with these relocations will become NOPs. */ |
a6bb11b2 YZ |
4394 | return BFD_RELOC_AARCH64_NONE; |
4395 | ||
259364ad JW |
4396 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
4397 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: | |
4398 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: | |
4399 | return is_local ? BFD_RELOC_AARCH64_NONE : r_type; | |
4400 | ||
a6bb11b2 YZ |
4401 | default: |
4402 | break; | |
a06ea964 NC |
4403 | } |
4404 | ||
4405 | return r_type; | |
4406 | } | |
4407 | ||
4408 | static unsigned int | |
a6bb11b2 | 4409 | aarch64_reloc_got_type (bfd_reloc_code_real_type r_type) |
a06ea964 NC |
4410 | { |
4411 | switch (r_type) | |
4412 | { | |
a6bb11b2 YZ |
4413 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
4414 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 4415 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 4416 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 4417 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 4418 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 4419 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
a06ea964 NC |
4420 | return GOT_NORMAL; |
4421 | ||
ce336788 | 4422 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 4423 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 4424 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
73f925cc | 4425 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 4426 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 4427 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
4428 | return GOT_TLS_GD; |
4429 | ||
a6bb11b2 YZ |
4430 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
4431 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
389b8029 | 4432 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 4433 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
a6bb11b2 | 4434 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
ce336788 | 4435 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: |
1ada945d | 4436 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
4437 | return GOT_TLSDESC_GD; |
4438 | ||
a6bb11b2 | 4439 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 4440 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 4441 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 4442 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
a06ea964 NC |
4443 | return GOT_TLS_IE; |
4444 | ||
a6bb11b2 YZ |
4445 | default: |
4446 | break; | |
a06ea964 NC |
4447 | } |
4448 | return GOT_UNKNOWN; | |
4449 | } | |
4450 | ||
4451 | static bfd_boolean | |
4452 | aarch64_can_relax_tls (bfd *input_bfd, | |
4453 | struct bfd_link_info *info, | |
a6bb11b2 | 4454 | bfd_reloc_code_real_type r_type, |
a06ea964 NC |
4455 | struct elf_link_hash_entry *h, |
4456 | unsigned long r_symndx) | |
4457 | { | |
4458 | unsigned int symbol_got_type; | |
4459 | unsigned int reloc_got_type; | |
4460 | ||
9331eea1 | 4461 | if (! IS_AARCH64_TLS_RELAX_RELOC (r_type)) |
a06ea964 NC |
4462 | return FALSE; |
4463 | ||
cec5225b | 4464 | symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx); |
a06ea964 NC |
4465 | reloc_got_type = aarch64_reloc_got_type (r_type); |
4466 | ||
4467 | if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type)) | |
4468 | return TRUE; | |
4469 | ||
0e1862bb | 4470 | if (bfd_link_pic (info)) |
a06ea964 NC |
4471 | return FALSE; |
4472 | ||
4473 | if (h && h->root.type == bfd_link_hash_undefweak) | |
4474 | return FALSE; | |
4475 | ||
4476 | return TRUE; | |
4477 | } | |
4478 | ||
a6bb11b2 YZ |
4479 | /* Given the relocation code R_TYPE, return the relaxed bfd reloc |
4480 | enumerator. */ | |
4481 | ||
4482 | static bfd_reloc_code_real_type | |
a06ea964 NC |
4483 | aarch64_tls_transition (bfd *input_bfd, |
4484 | struct bfd_link_info *info, | |
4485 | unsigned int r_type, | |
4486 | struct elf_link_hash_entry *h, | |
4487 | unsigned long r_symndx) | |
4488 | { | |
a6bb11b2 YZ |
4489 | bfd_reloc_code_real_type bfd_r_type |
4490 | = elfNN_aarch64_bfd_reloc_from_type (r_type); | |
a06ea964 | 4491 | |
a6bb11b2 YZ |
4492 | if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx)) |
4493 | return bfd_r_type; | |
4494 | ||
4495 | return aarch64_tls_transition_without_check (bfd_r_type, h); | |
a06ea964 NC |
4496 | } |
4497 | ||
4498 | /* Return the base VMA address which should be subtracted from real addresses | |
a6bb11b2 | 4499 | when resolving R_AARCH64_TLS_DTPREL relocation. */ |
a06ea964 NC |
4500 | |
4501 | static bfd_vma | |
4502 | dtpoff_base (struct bfd_link_info *info) | |
4503 | { | |
4504 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
4505 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); | |
4506 | return elf_hash_table (info)->tls_sec->vma; | |
4507 | } | |
4508 | ||
a06ea964 NC |
4509 | /* Return the base VMA address which should be subtracted from real addresses |
4510 | when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */ | |
4511 | ||
4512 | static bfd_vma | |
4513 | tpoff_base (struct bfd_link_info *info) | |
4514 | { | |
4515 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
4516 | ||
4517 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
ac21917f | 4518 | BFD_ASSERT (htab->tls_sec != NULL); |
a06ea964 NC |
4519 | |
4520 | bfd_vma base = align_power ((bfd_vma) TCB_SIZE, | |
4521 | htab->tls_sec->alignment_power); | |
4522 | return htab->tls_sec->vma - base; | |
4523 | } | |
4524 | ||
4525 | static bfd_vma * | |
4526 | symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4527 | unsigned long r_symndx) | |
4528 | { | |
4529 | /* Calculate the address of the GOT entry for symbol | |
4530 | referred to in h. */ | |
4531 | if (h != NULL) | |
4532 | return &h->got.offset; | |
4533 | else | |
4534 | { | |
4535 | /* local symbol */ | |
4536 | struct elf_aarch64_local_symbol *l; | |
4537 | ||
cec5225b | 4538 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
4539 | return &l[r_symndx].got_offset; |
4540 | } | |
4541 | } | |
4542 | ||
4543 | static void | |
4544 | symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4545 | unsigned long r_symndx) | |
4546 | { | |
4547 | bfd_vma *p; | |
4548 | p = symbol_got_offset_ref (input_bfd, h, r_symndx); | |
4549 | *p |= 1; | |
4550 | } | |
4551 | ||
4552 | static int | |
4553 | symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4554 | unsigned long r_symndx) | |
4555 | { | |
4556 | bfd_vma value; | |
4557 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
4558 | return value & 1; | |
4559 | } | |
4560 | ||
4561 | static bfd_vma | |
4562 | symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4563 | unsigned long r_symndx) | |
4564 | { | |
4565 | bfd_vma value; | |
4566 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
4567 | value &= ~1; | |
4568 | return value; | |
4569 | } | |
4570 | ||
4571 | static bfd_vma * | |
4572 | symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4573 | unsigned long r_symndx) | |
4574 | { | |
4575 | /* Calculate the address of the GOT entry for symbol | |
4576 | referred to in h. */ | |
4577 | if (h != NULL) | |
4578 | { | |
cec5225b YZ |
4579 | struct elf_aarch64_link_hash_entry *eh; |
4580 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
4581 | return &eh->tlsdesc_got_jump_table_offset; |
4582 | } | |
4583 | else | |
4584 | { | |
4585 | /* local symbol */ | |
4586 | struct elf_aarch64_local_symbol *l; | |
4587 | ||
cec5225b | 4588 | l = elf_aarch64_locals (input_bfd); |
a06ea964 NC |
4589 | return &l[r_symndx].tlsdesc_got_jump_table_offset; |
4590 | } | |
4591 | } | |
4592 | ||
4593 | static void | |
4594 | symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4595 | unsigned long r_symndx) | |
4596 | { | |
4597 | bfd_vma *p; | |
4598 | p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
4599 | *p |= 1; | |
4600 | } | |
4601 | ||
4602 | static int | |
4603 | symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd, | |
4604 | struct elf_link_hash_entry *h, | |
4605 | unsigned long r_symndx) | |
4606 | { | |
4607 | bfd_vma value; | |
4608 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
4609 | return value & 1; | |
4610 | } | |
4611 | ||
4612 | static bfd_vma | |
4613 | symbol_tlsdesc_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
4614 | unsigned long r_symndx) | |
4615 | { | |
4616 | bfd_vma value; | |
4617 | value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx); | |
4618 | value &= ~1; | |
4619 | return value; | |
4620 | } | |
4621 | ||
68fcca92 JW |
4622 | /* Data for make_branch_to_erratum_835769_stub(). */ |
4623 | ||
4624 | struct erratum_835769_branch_to_stub_data | |
4625 | { | |
4106101c | 4626 | struct bfd_link_info *info; |
68fcca92 JW |
4627 | asection *output_section; |
4628 | bfd_byte *contents; | |
4629 | }; | |
4630 | ||
4631 | /* Helper to insert branches to erratum 835769 stubs in the right | |
4632 | places for a particular section. */ | |
4633 | ||
4634 | static bfd_boolean | |
4635 | make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry, | |
4636 | void *in_arg) | |
4637 | { | |
4638 | struct elf_aarch64_stub_hash_entry *stub_entry; | |
4639 | struct erratum_835769_branch_to_stub_data *data; | |
4640 | bfd_byte *contents; | |
4641 | unsigned long branch_insn = 0; | |
4642 | bfd_vma veneered_insn_loc, veneer_entry_loc; | |
4643 | bfd_signed_vma branch_offset; | |
4644 | unsigned int target; | |
4645 | bfd *abfd; | |
4646 | ||
4647 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
4648 | data = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
4649 | ||
4650 | if (stub_entry->target_section != data->output_section | |
4651 | || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer) | |
4652 | return TRUE; | |
4653 | ||
4654 | contents = data->contents; | |
4655 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
4656 | + stub_entry->target_section->output_offset | |
4657 | + stub_entry->target_value; | |
4658 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
4659 | + stub_entry->stub_sec->output_offset | |
4660 | + stub_entry->stub_offset; | |
4661 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
4662 | ||
4663 | abfd = stub_entry->target_section->owner; | |
4664 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4665 | (*_bfd_error_handler) | |
4666 | (_("%B: error: Erratum 835769 stub out " | |
4667 | "of range (input file too large)"), abfd); | |
4668 | ||
4669 | target = stub_entry->target_value; | |
4670 | branch_insn = 0x14000000; | |
4671 | branch_offset >>= 2; | |
4672 | branch_offset &= 0x3ffffff; | |
4673 | branch_insn |= branch_offset; | |
4674 | bfd_putl32 (branch_insn, &contents[target]); | |
4675 | ||
4676 | return TRUE; | |
4677 | } | |
4678 | ||
4106101c MS |
4679 | |
4680 | static bfd_boolean | |
4681 | _bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry, | |
4682 | void *in_arg) | |
4683 | { | |
4684 | struct elf_aarch64_stub_hash_entry *stub_entry | |
4685 | = (struct elf_aarch64_stub_hash_entry *) gen_entry; | |
4686 | struct erratum_835769_branch_to_stub_data *data | |
4687 | = (struct erratum_835769_branch_to_stub_data *) in_arg; | |
4688 | struct bfd_link_info *info; | |
4689 | struct elf_aarch64_link_hash_table *htab; | |
4690 | bfd_byte *contents; | |
4691 | asection *section; | |
4692 | bfd *abfd; | |
4693 | bfd_vma place; | |
4694 | uint32_t insn; | |
4695 | ||
4696 | info = data->info; | |
4697 | contents = data->contents; | |
4698 | section = data->output_section; | |
4699 | ||
4700 | htab = elf_aarch64_hash_table (info); | |
4701 | ||
4702 | if (stub_entry->target_section != section | |
4703 | || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer) | |
4704 | return TRUE; | |
4705 | ||
4706 | insn = bfd_getl32 (contents + stub_entry->target_value); | |
4707 | bfd_putl32 (insn, | |
4708 | stub_entry->stub_sec->contents + stub_entry->stub_offset); | |
4709 | ||
4710 | place = (section->output_section->vma + section->output_offset | |
4711 | + stub_entry->adrp_offset); | |
4712 | insn = bfd_getl32 (contents + stub_entry->adrp_offset); | |
4713 | ||
4714 | if ((insn & AARCH64_ADRP_OP_MASK) != AARCH64_ADRP_OP) | |
4715 | abort (); | |
4716 | ||
4717 | bfd_signed_vma imm = | |
4718 | (_bfd_aarch64_sign_extend | |
4719 | ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33) | |
4720 | - (place & 0xfff)); | |
4721 | ||
4722 | if (htab->fix_erratum_843419_adr | |
4723 | && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM)) | |
4724 | { | |
4725 | insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm) | |
4726 | | AARCH64_RT (insn)); | |
4727 | bfd_putl32 (insn, contents + stub_entry->adrp_offset); | |
4728 | } | |
4729 | else | |
4730 | { | |
4731 | bfd_vma veneered_insn_loc; | |
4732 | bfd_vma veneer_entry_loc; | |
4733 | bfd_signed_vma branch_offset; | |
4734 | uint32_t branch_insn; | |
4735 | ||
4736 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
4737 | + stub_entry->target_section->output_offset | |
4738 | + stub_entry->target_value; | |
4739 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
4740 | + stub_entry->stub_sec->output_offset | |
4741 | + stub_entry->stub_offset; | |
4742 | branch_offset = veneer_entry_loc - veneered_insn_loc; | |
4743 | ||
4744 | abfd = stub_entry->target_section->owner; | |
4745 | if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc)) | |
4746 | (*_bfd_error_handler) | |
4747 | (_("%B: error: Erratum 843419 stub out " | |
4748 | "of range (input file too large)"), abfd); | |
4749 | ||
4750 | branch_insn = 0x14000000; | |
4751 | branch_offset >>= 2; | |
4752 | branch_offset &= 0x3ffffff; | |
4753 | branch_insn |= branch_offset; | |
4754 | bfd_putl32 (branch_insn, contents + stub_entry->target_value); | |
4755 | } | |
4756 | return TRUE; | |
4757 | } | |
4758 | ||
4759 | ||
68fcca92 JW |
4760 | static bfd_boolean |
4761 | elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, | |
4762 | struct bfd_link_info *link_info, | |
4763 | asection *sec, | |
4764 | bfd_byte *contents) | |
4765 | ||
4766 | { | |
4767 | struct elf_aarch64_link_hash_table *globals = | |
f872121a | 4768 | elf_aarch64_hash_table (link_info); |
68fcca92 JW |
4769 | |
4770 | if (globals == NULL) | |
4771 | return FALSE; | |
4772 | ||
4773 | /* Fix code to point to erratum 835769 stubs. */ | |
4774 | if (globals->fix_erratum_835769) | |
4775 | { | |
4776 | struct erratum_835769_branch_to_stub_data data; | |
4777 | ||
4106101c | 4778 | data.info = link_info; |
68fcca92 JW |
4779 | data.output_section = sec; |
4780 | data.contents = contents; | |
4781 | bfd_hash_traverse (&globals->stub_hash_table, | |
4782 | make_branch_to_erratum_835769_stub, &data); | |
4783 | } | |
4784 | ||
4106101c MS |
4785 | if (globals->fix_erratum_843419) |
4786 | { | |
4787 | struct erratum_835769_branch_to_stub_data data; | |
4788 | ||
4789 | data.info = link_info; | |
4790 | data.output_section = sec; | |
4791 | data.contents = contents; | |
4792 | bfd_hash_traverse (&globals->stub_hash_table, | |
4793 | _bfd_aarch64_erratum_843419_branch_to_stub, &data); | |
4794 | } | |
4795 | ||
68fcca92 JW |
4796 | return FALSE; |
4797 | } | |
4798 | ||
a06ea964 NC |
4799 | /* Perform a relocation as part of a final link. */ |
4800 | static bfd_reloc_status_type | |
cec5225b | 4801 | elfNN_aarch64_final_link_relocate (reloc_howto_type *howto, |
a06ea964 NC |
4802 | bfd *input_bfd, |
4803 | bfd *output_bfd, | |
4804 | asection *input_section, | |
4805 | bfd_byte *contents, | |
4806 | Elf_Internal_Rela *rel, | |
4807 | bfd_vma value, | |
4808 | struct bfd_link_info *info, | |
4809 | asection *sym_sec, | |
4810 | struct elf_link_hash_entry *h, | |
4811 | bfd_boolean *unresolved_reloc_p, | |
4812 | bfd_boolean save_addend, | |
1419bbe5 WN |
4813 | bfd_vma *saved_addend, |
4814 | Elf_Internal_Sym *sym) | |
a06ea964 | 4815 | { |
1419bbe5 | 4816 | Elf_Internal_Shdr *symtab_hdr; |
a06ea964 | 4817 | unsigned int r_type = howto->type; |
a6bb11b2 YZ |
4818 | bfd_reloc_code_real_type bfd_r_type |
4819 | = elfNN_aarch64_bfd_reloc_from_howto (howto); | |
4820 | bfd_reloc_code_real_type new_bfd_r_type; | |
a06ea964 NC |
4821 | unsigned long r_symndx; |
4822 | bfd_byte *hit_data = contents + rel->r_offset; | |
b53b1bed | 4823 | bfd_vma place, off; |
a06ea964 | 4824 | bfd_signed_vma signed_addend; |
cec5225b | 4825 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 | 4826 | bfd_boolean weak_undef_p; |
b53b1bed | 4827 | asection *base_got; |
a06ea964 | 4828 | |
cec5225b | 4829 | globals = elf_aarch64_hash_table (info); |
a06ea964 | 4830 | |
1419bbe5 WN |
4831 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
4832 | ||
a06ea964 NC |
4833 | BFD_ASSERT (is_aarch64_elf (input_bfd)); |
4834 | ||
cec5225b | 4835 | r_symndx = ELFNN_R_SYM (rel->r_info); |
a06ea964 NC |
4836 | |
4837 | /* It is possible to have linker relaxations on some TLS access | |
4838 | models. Update our information here. */ | |
a6bb11b2 YZ |
4839 | new_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, h, r_symndx); |
4840 | if (new_bfd_r_type != bfd_r_type) | |
4841 | { | |
4842 | bfd_r_type = new_bfd_r_type; | |
4843 | howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type); | |
4844 | BFD_ASSERT (howto != NULL); | |
4845 | r_type = howto->type; | |
4846 | } | |
a06ea964 NC |
4847 | |
4848 | place = input_section->output_section->vma | |
4849 | + input_section->output_offset + rel->r_offset; | |
4850 | ||
4851 | /* Get addend, accumulating the addend for consecutive relocs | |
4852 | which refer to the same offset. */ | |
4853 | signed_addend = saved_addend ? *saved_addend : 0; | |
4854 | signed_addend += rel->r_addend; | |
4855 | ||
4856 | weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak | |
4857 | : bfd_is_und_section (sym_sec)); | |
a6bb11b2 | 4858 | |
1419bbe5 WN |
4859 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
4860 | it here if it is defined in a non-shared object. */ | |
4861 | if (h != NULL | |
4862 | && h->type == STT_GNU_IFUNC | |
4863 | && h->def_regular) | |
4864 | { | |
4865 | asection *plt; | |
4866 | const char *name; | |
99ad26cb | 4867 | bfd_vma addend = 0; |
1419bbe5 WN |
4868 | |
4869 | if ((input_section->flags & SEC_ALLOC) == 0 | |
4870 | || h->plt.offset == (bfd_vma) -1) | |
4871 | abort (); | |
4872 | ||
4873 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
4874 | plt = globals->root.splt ? globals->root.splt : globals->root.iplt; | |
4875 | value = (plt->output_section->vma + plt->output_offset + h->plt.offset); | |
4876 | ||
4877 | switch (bfd_r_type) | |
4878 | { | |
4879 | default: | |
4880 | if (h->root.root.string) | |
4881 | name = h->root.root.string; | |
4882 | else | |
4883 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
4884 | NULL); | |
4885 | (*_bfd_error_handler) | |
4886 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
4887 | "symbol `%s' isn't handled by %s"), input_bfd, | |
4888 | howto->name, name, __FUNCTION__); | |
4889 | bfd_set_error (bfd_error_bad_value); | |
4890 | return FALSE; | |
4891 | ||
4892 | case BFD_RELOC_AARCH64_NN: | |
4893 | if (rel->r_addend != 0) | |
4894 | { | |
4895 | if (h->root.root.string) | |
4896 | name = h->root.root.string; | |
4897 | else | |
4898 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, | |
4899 | sym, NULL); | |
4900 | (*_bfd_error_handler) | |
4901 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
4902 | "symbol `%s' has non-zero addend: %d"), | |
4903 | input_bfd, howto->name, name, rel->r_addend); | |
4904 | bfd_set_error (bfd_error_bad_value); | |
4905 | return FALSE; | |
4906 | } | |
4907 | ||
4908 | /* Generate dynamic relocation only when there is a | |
4909 | non-GOT reference in a shared object. */ | |
0e1862bb | 4910 | if (bfd_link_pic (info) && h->non_got_ref) |
1419bbe5 WN |
4911 | { |
4912 | Elf_Internal_Rela outrel; | |
4913 | asection *sreloc; | |
4914 | ||
4915 | /* Need a dynamic relocation to get the real function | |
4916 | address. */ | |
4917 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
4918 | info, | |
4919 | input_section, | |
4920 | rel->r_offset); | |
4921 | if (outrel.r_offset == (bfd_vma) -1 | |
4922 | || outrel.r_offset == (bfd_vma) -2) | |
4923 | abort (); | |
4924 | ||
4925 | outrel.r_offset += (input_section->output_section->vma | |
4926 | + input_section->output_offset); | |
4927 | ||
4928 | if (h->dynindx == -1 | |
4929 | || h->forced_local | |
0e1862bb | 4930 | || bfd_link_executable (info)) |
1419bbe5 WN |
4931 | { |
4932 | /* This symbol is resolved locally. */ | |
4933 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
4934 | outrel.r_addend = (h->root.u.def.value | |
4935 | + h->root.u.def.section->output_section->vma | |
4936 | + h->root.u.def.section->output_offset); | |
4937 | } | |
4938 | else | |
4939 | { | |
4940 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); | |
4941 | outrel.r_addend = 0; | |
4942 | } | |
4943 | ||
4944 | sreloc = globals->root.irelifunc; | |
4945 | elf_append_rela (output_bfd, sreloc, &outrel); | |
4946 | ||
4947 | /* If this reloc is against an external symbol, we | |
4948 | do not want to fiddle with the addend. Otherwise, | |
4949 | we need to include the symbol value so that it | |
4950 | becomes an addend for the dynamic reloc. For an | |
4951 | internal symbol, we have updated addend. */ | |
4952 | return bfd_reloc_ok; | |
4953 | } | |
4954 | /* FALLTHROUGH */ | |
1419bbe5 | 4955 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 4956 | case BFD_RELOC_AARCH64_JUMP26: |
1419bbe5 WN |
4957 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
4958 | signed_addend, | |
4959 | weak_undef_p); | |
4960 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, | |
4961 | howto, value); | |
1419bbe5 WN |
4962 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
4963 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 4964 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 4965 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 4966 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
a2e1db00 | 4967 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
ce336788 | 4968 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
1419bbe5 WN |
4969 | base_got = globals->root.sgot; |
4970 | off = h->got.offset; | |
4971 | ||
4972 | if (base_got == NULL) | |
4973 | abort (); | |
4974 | ||
4975 | if (off == (bfd_vma) -1) | |
4976 | { | |
4977 | bfd_vma plt_index; | |
4978 | ||
4979 | /* We can't use h->got.offset here to save state, or | |
4980 | even just remember the offset, as finish_dynamic_symbol | |
4981 | would use that as offset into .got. */ | |
4982 | ||
4983 | if (globals->root.splt != NULL) | |
4984 | { | |
b1ee0cc4 WN |
4985 | plt_index = ((h->plt.offset - globals->plt_header_size) / |
4986 | globals->plt_entry_size); | |
1419bbe5 WN |
4987 | off = (plt_index + 3) * GOT_ENTRY_SIZE; |
4988 | base_got = globals->root.sgotplt; | |
4989 | } | |
4990 | else | |
4991 | { | |
4992 | plt_index = h->plt.offset / globals->plt_entry_size; | |
4993 | off = plt_index * GOT_ENTRY_SIZE; | |
4994 | base_got = globals->root.igotplt; | |
4995 | } | |
4996 | ||
4997 | if (h->dynindx == -1 | |
4998 | || h->forced_local | |
4999 | || info->symbolic) | |
5000 | { | |
5001 | /* This references the local definition. We must | |
5002 | initialize this entry in the global offset table. | |
5003 | Since the offset must always be a multiple of 8, | |
5004 | we use the least significant bit to record | |
5005 | whether we have initialized it already. | |
5006 | ||
5007 | When doing a dynamic link, we create a .rela.got | |
5008 | relocation entry to initialize the value. This | |
5009 | is done in the finish_dynamic_symbol routine. */ | |
5010 | if ((off & 1) != 0) | |
5011 | off &= ~1; | |
5012 | else | |
5013 | { | |
5014 | bfd_put_NN (output_bfd, value, | |
5015 | base_got->contents + off); | |
5016 | /* Note that this is harmless as -1 | 1 still is -1. */ | |
5017 | h->got.offset |= 1; | |
5018 | } | |
5019 | } | |
5020 | value = (base_got->output_section->vma | |
5021 | + base_got->output_offset + off); | |
5022 | } | |
5023 | else | |
5024 | value = aarch64_calculate_got_entry_vma (h, globals, info, | |
5025 | value, output_bfd, | |
5026 | unresolved_reloc_p); | |
a0becb89 RL |
5027 | |
5028 | switch (bfd_r_type) | |
5029 | { | |
5030 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: | |
5031 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: | |
5032 | addend = (globals->root.sgot->output_section->vma | |
5033 | + globals->root.sgot->output_offset); | |
5034 | break; | |
a2e1db00 RL |
5035 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
5036 | value = (value - globals->root.sgot->output_section->vma | |
5037 | - globals->root.sgot->output_offset); | |
a0becb89 RL |
5038 | default: |
5039 | break; | |
5040 | } | |
5041 | ||
1419bbe5 | 5042 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
99ad26cb | 5043 | addend, weak_undef_p); |
1419bbe5 | 5044 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value); |
1419bbe5 | 5045 | case BFD_RELOC_AARCH64_ADD_LO12: |
ce336788 | 5046 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: |
1419bbe5 WN |
5047 | break; |
5048 | } | |
5049 | } | |
5050 | ||
a6bb11b2 | 5051 | switch (bfd_r_type) |
a06ea964 | 5052 | { |
a6bb11b2 YZ |
5053 | case BFD_RELOC_AARCH64_NONE: |
5054 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
a06ea964 NC |
5055 | *unresolved_reloc_p = FALSE; |
5056 | return bfd_reloc_ok; | |
5057 | ||
a6bb11b2 | 5058 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
5059 | |
5060 | /* When generating a shared object or relocatable executable, these | |
5061 | relocations are copied into the output file to be resolved at | |
5062 | run time. */ | |
0e1862bb L |
5063 | if (((bfd_link_pic (info) == TRUE) |
5064 | || globals->root.is_relocatable_executable) | |
a06ea964 NC |
5065 | && (input_section->flags & SEC_ALLOC) |
5066 | && (h == NULL | |
5067 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5068 | || h->root.type != bfd_link_hash_undefweak)) | |
5069 | { | |
5070 | Elf_Internal_Rela outrel; | |
5071 | bfd_byte *loc; | |
5072 | bfd_boolean skip, relocate; | |
5073 | asection *sreloc; | |
5074 | ||
5075 | *unresolved_reloc_p = FALSE; | |
5076 | ||
a06ea964 NC |
5077 | skip = FALSE; |
5078 | relocate = FALSE; | |
5079 | ||
5080 | outrel.r_addend = signed_addend; | |
5081 | outrel.r_offset = | |
5082 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
5083 | rel->r_offset); | |
5084 | if (outrel.r_offset == (bfd_vma) - 1) | |
5085 | skip = TRUE; | |
5086 | else if (outrel.r_offset == (bfd_vma) - 2) | |
5087 | { | |
5088 | skip = TRUE; | |
5089 | relocate = TRUE; | |
5090 | } | |
5091 | ||
5092 | outrel.r_offset += (input_section->output_section->vma | |
5093 | + input_section->output_offset); | |
5094 | ||
5095 | if (skip) | |
5096 | memset (&outrel, 0, sizeof outrel); | |
5097 | else if (h != NULL | |
5098 | && h->dynindx != -1 | |
0e1862bb L |
5099 | && (!bfd_link_pic (info) |
5100 | || !SYMBOLIC_BIND (info, h) | |
5101 | || !h->def_regular)) | |
cec5225b | 5102 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); |
a06ea964 NC |
5103 | else |
5104 | { | |
5105 | int symbol; | |
5106 | ||
5107 | /* On SVR4-ish systems, the dynamic loader cannot | |
5108 | relocate the text and data segments independently, | |
5109 | so the symbol does not matter. */ | |
5110 | symbol = 0; | |
a6bb11b2 | 5111 | outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE)); |
a06ea964 NC |
5112 | outrel.r_addend += value; |
5113 | } | |
5114 | ||
1419bbe5 WN |
5115 | sreloc = elf_section_data (input_section)->sreloc; |
5116 | if (sreloc == NULL || sreloc->contents == NULL) | |
5117 | return bfd_reloc_notsupported; | |
5118 | ||
5119 | loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals); | |
cec5225b | 5120 | bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc); |
a06ea964 | 5121 | |
1419bbe5 | 5122 | if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size) |
a06ea964 NC |
5123 | { |
5124 | /* Sanity to check that we have previously allocated | |
5125 | sufficient space in the relocation section for the | |
5126 | number of relocations we actually want to emit. */ | |
5127 | abort (); | |
5128 | } | |
5129 | ||
5130 | /* If this reloc is against an external symbol, we do not want to | |
5131 | fiddle with the addend. Otherwise, we need to include the symbol | |
5132 | value so that it becomes an addend for the dynamic reloc. */ | |
5133 | if (!relocate) | |
5134 | return bfd_reloc_ok; | |
5135 | ||
5136 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5137 | contents, rel->r_offset, value, | |
5138 | signed_addend); | |
5139 | } | |
5140 | else | |
5141 | value += signed_addend; | |
5142 | break; | |
5143 | ||
a6bb11b2 | 5144 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 5145 | case BFD_RELOC_AARCH64_JUMP26: |
a06ea964 NC |
5146 | { |
5147 | asection *splt = globals->root.splt; | |
5148 | bfd_boolean via_plt_p = | |
5149 | splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1; | |
5150 | ||
5151 | /* A call to an undefined weak symbol is converted to a jump to | |
5152 | the next instruction unless a PLT entry will be created. | |
5153 | The jump to the next instruction is optimized as a NOP. | |
5154 | Do the same for local undefined symbols. */ | |
5155 | if (weak_undef_p && ! via_plt_p) | |
5156 | { | |
5157 | bfd_putl32 (INSN_NOP, hit_data); | |
5158 | return bfd_reloc_ok; | |
5159 | } | |
5160 | ||
5161 | /* If the call goes through a PLT entry, make sure to | |
5162 | check distance to the right destination address. */ | |
5163 | if (via_plt_p) | |
07f9ddfe JW |
5164 | value = (splt->output_section->vma |
5165 | + splt->output_offset + h->plt.offset); | |
5166 | ||
5167 | /* Check if a stub has to be inserted because the destination | |
5168 | is too far away. */ | |
5169 | struct elf_aarch64_stub_hash_entry *stub_entry = NULL; | |
5170 | if (! aarch64_valid_branch_p (value, place)) | |
5171 | /* The target is out of reach, so redirect the branch to | |
5172 | the local stub for this function. */ | |
5173 | stub_entry = elfNN_aarch64_get_stub_entry (input_section, sym_sec, h, | |
5174 | rel, globals); | |
5175 | if (stub_entry != NULL) | |
5176 | value = (stub_entry->stub_offset | |
5177 | + stub_entry->stub_sec->output_offset | |
5178 | + stub_entry->stub_sec->output_section->vma); | |
a06ea964 | 5179 | } |
caed7120 YZ |
5180 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5181 | signed_addend, weak_undef_p); | |
07f9ddfe | 5182 | *unresolved_reloc_p = FALSE; |
a06ea964 NC |
5183 | break; |
5184 | ||
dcbd20eb JW |
5185 | case BFD_RELOC_AARCH64_16_PCREL: |
5186 | case BFD_RELOC_AARCH64_32_PCREL: | |
5187 | case BFD_RELOC_AARCH64_64_PCREL: | |
ce336788 JW |
5188 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
5189 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
5190 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
5191 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
0e1862bb | 5192 | if (bfd_link_pic (info) |
dcbd20eb JW |
5193 | && (input_section->flags & SEC_ALLOC) != 0 |
5194 | && (input_section->flags & SEC_READONLY) != 0 | |
5195 | && h != NULL | |
5196 | && !h->def_regular) | |
5197 | { | |
5198 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
5199 | ||
5200 | (*_bfd_error_handler) | |
5201 | (_("%B: relocation %s against external symbol `%s' can not be used" | |
5202 | " when making a shared object; recompile with -fPIC"), | |
5203 | input_bfd, elfNN_aarch64_howto_table[howto_index].name, | |
5204 | h->root.root.string); | |
5205 | bfd_set_error (bfd_error_bad_value); | |
5206 | return FALSE; | |
5207 | } | |
5208 | ||
a6bb11b2 YZ |
5209 | case BFD_RELOC_AARCH64_16: |
5210 | #if ARCH_SIZE == 64 | |
5211 | case BFD_RELOC_AARCH64_32: | |
5212 | #endif | |
5213 | case BFD_RELOC_AARCH64_ADD_LO12: | |
a6bb11b2 | 5214 | case BFD_RELOC_AARCH64_BRANCH19: |
ce336788 | 5215 | case BFD_RELOC_AARCH64_LDST128_LO12: |
a6bb11b2 YZ |
5216 | case BFD_RELOC_AARCH64_LDST16_LO12: |
5217 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
5218 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
ce336788 | 5219 | case BFD_RELOC_AARCH64_LDST8_LO12: |
a6bb11b2 YZ |
5220 | case BFD_RELOC_AARCH64_MOVW_G0: |
5221 | case BFD_RELOC_AARCH64_MOVW_G0_NC: | |
ce336788 | 5222 | case BFD_RELOC_AARCH64_MOVW_G0_S: |
a6bb11b2 YZ |
5223 | case BFD_RELOC_AARCH64_MOVW_G1: |
5224 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
ce336788 | 5225 | case BFD_RELOC_AARCH64_MOVW_G1_S: |
a6bb11b2 YZ |
5226 | case BFD_RELOC_AARCH64_MOVW_G2: |
5227 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
ce336788 | 5228 | case BFD_RELOC_AARCH64_MOVW_G2_S: |
a6bb11b2 | 5229 | case BFD_RELOC_AARCH64_MOVW_G3: |
a6bb11b2 | 5230 | case BFD_RELOC_AARCH64_TSTBR14: |
caed7120 YZ |
5231 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5232 | signed_addend, weak_undef_p); | |
a06ea964 NC |
5233 | break; |
5234 | ||
a6bb11b2 YZ |
5235 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
5236 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
7018c030 | 5237 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
ce336788 | 5238 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
99ad26cb | 5239 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
ce336788 | 5240 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
a06ea964 NC |
5241 | if (globals->root.sgot == NULL) |
5242 | BFD_ASSERT (h != NULL); | |
5243 | ||
5244 | if (h != NULL) | |
5245 | { | |
99ad26cb | 5246 | bfd_vma addend = 0; |
a06ea964 NC |
5247 | value = aarch64_calculate_got_entry_vma (h, globals, info, value, |
5248 | output_bfd, | |
5249 | unresolved_reloc_p); | |
7018c030 JW |
5250 | if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
5251 | || bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
99ad26cb JW |
5252 | addend = (globals->root.sgot->output_section->vma |
5253 | + globals->root.sgot->output_offset); | |
caed7120 | 5254 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
99ad26cb | 5255 | addend, weak_undef_p); |
a06ea964 | 5256 | } |
b53b1bed JW |
5257 | else |
5258 | { | |
99ad26cb | 5259 | bfd_vma addend = 0; |
b53b1bed JW |
5260 | struct elf_aarch64_local_symbol *locals |
5261 | = elf_aarch64_locals (input_bfd); | |
5262 | ||
5263 | if (locals == NULL) | |
5264 | { | |
5265 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
5266 | (*_bfd_error_handler) | |
5267 | (_("%B: Local symbol descriptor table be NULL when applying " | |
5268 | "relocation %s against local symbol"), | |
5269 | input_bfd, elfNN_aarch64_howto_table[howto_index].name); | |
5270 | abort (); | |
5271 | } | |
5272 | ||
5273 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
5274 | base_got = globals->root.sgot; | |
5275 | bfd_vma got_entry_addr = (base_got->output_section->vma | |
5276 | + base_got->output_offset + off); | |
5277 | ||
5278 | if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
5279 | { | |
5280 | bfd_put_64 (output_bfd, value, base_got->contents + off); | |
5281 | ||
0e1862bb | 5282 | if (bfd_link_pic (info)) |
b53b1bed JW |
5283 | { |
5284 | asection *s; | |
5285 | Elf_Internal_Rela outrel; | |
5286 | ||
5287 | /* For local symbol, we have done absolute relocation in static | |
5288 | linking stageh. While for share library, we need to update | |
5289 | the content of GOT entry according to the share objects | |
5290 | loading base address. So we need to generate a | |
5291 | R_AARCH64_RELATIVE reloc for dynamic linker. */ | |
5292 | s = globals->root.srelgot; | |
5293 | if (s == NULL) | |
5294 | abort (); | |
5295 | ||
5296 | outrel.r_offset = got_entry_addr; | |
5297 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); | |
5298 | outrel.r_addend = value; | |
5299 | elf_append_rela (output_bfd, s, &outrel); | |
5300 | } | |
5301 | ||
5302 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
5303 | } | |
5304 | ||
5305 | /* Update the relocation value to GOT entry addr as we have transformed | |
5306 | the direct data access into indirect data access through GOT. */ | |
5307 | value = got_entry_addr; | |
99ad26cb | 5308 | |
7018c030 JW |
5309 | if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
5310 | || bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
99ad26cb JW |
5311 | addend = base_got->output_section->vma + base_got->output_offset; |
5312 | ||
5313 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, | |
5314 | addend, weak_undef_p); | |
b53b1bed JW |
5315 | } |
5316 | ||
a06ea964 NC |
5317 | break; |
5318 | ||
a2e1db00 RL |
5319 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
5320 | if (h != NULL) | |
5321 | value = aarch64_calculate_got_entry_vma (h, globals, info, value, | |
5322 | output_bfd, | |
5323 | unresolved_reloc_p); | |
5324 | else | |
5325 | { | |
5326 | struct elf_aarch64_local_symbol *locals | |
5327 | = elf_aarch64_locals (input_bfd); | |
5328 | ||
5329 | if (locals == NULL) | |
5330 | { | |
5331 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
5332 | (*_bfd_error_handler) | |
5333 | (_("%B: Local symbol descriptor table be NULL when applying " | |
5334 | "relocation %s against local symbol"), | |
5335 | input_bfd, elfNN_aarch64_howto_table[howto_index].name); | |
5336 | abort (); | |
5337 | } | |
5338 | ||
5339 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
5340 | base_got = globals->root.sgot; | |
5341 | if (base_got == NULL) | |
5342 | abort (); | |
5343 | ||
5344 | bfd_vma got_entry_addr = (base_got->output_section->vma | |
5345 | + base_got->output_offset + off); | |
5346 | ||
5347 | if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
5348 | { | |
5349 | bfd_put_64 (output_bfd, value, base_got->contents + off); | |
5350 | ||
5351 | if (bfd_link_pic (info)) | |
5352 | { | |
5353 | asection *s; | |
5354 | Elf_Internal_Rela outrel; | |
5355 | ||
5356 | /* For local symbol, we have done absolute relocation in static | |
5357 | linking stage. While for share library, we need to update | |
5358 | the content of GOT entry according to the share objects | |
5359 | loading base address. So we need to generate a | |
5360 | R_AARCH64_RELATIVE reloc for dynamic linker. */ | |
5361 | s = globals->root.srelgot; | |
5362 | if (s == NULL) | |
5363 | abort (); | |
5364 | ||
5365 | outrel.r_offset = got_entry_addr; | |
5366 | outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); | |
5367 | outrel.r_addend = value; | |
5368 | elf_append_rela (output_bfd, s, &outrel); | |
5369 | } | |
5370 | ||
5371 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
5372 | } | |
5373 | } | |
5374 | ||
5375 | /* Update the relocation value to GOT entry addr as we have transformed | |
5376 | the direct data access into indirect data access through GOT. */ | |
5377 | value = symbol_got_offset (input_bfd, h, r_symndx); | |
5378 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, | |
5379 | 0, weak_undef_p); | |
5380 | *unresolved_reloc_p = FALSE; | |
5381 | break; | |
5382 | ||
ce336788 | 5383 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 5384 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 5385 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 5386 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 5387 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 5388 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 5389 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
73f925cc | 5390 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 5391 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 5392 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
5393 | if (globals->root.sgot == NULL) |
5394 | return bfd_reloc_notsupported; | |
5395 | ||
5396 | value = (symbol_got_offset (input_bfd, h, r_symndx) | |
5397 | + globals->root.sgot->output_section->vma | |
f44a1f8e | 5398 | + globals->root.sgot->output_offset); |
a06ea964 | 5399 | |
caed7120 YZ |
5400 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5401 | 0, weak_undef_p); | |
a06ea964 NC |
5402 | *unresolved_reloc_p = FALSE; |
5403 | break; | |
5404 | ||
6ffe9a1b | 5405 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12: |
40fbed84 | 5406 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12: |
753999c1 | 5407 | case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC: |
07c9aa07 JW |
5408 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12: |
5409 | case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC: | |
5410 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12: | |
5411 | case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC: | |
5412 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12: | |
5413 | case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC: | |
5414 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12: | |
5415 | case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC: | |
6ffe9a1b JW |
5416 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0: |
5417 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC: | |
5418 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1: | |
5419 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC: | |
5420 | case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2: | |
40fbed84 JW |
5421 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5422 | signed_addend - dtpoff_base (info), | |
5423 | weak_undef_p); | |
5424 | break; | |
5425 | ||
a6bb11b2 YZ |
5426 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
5427 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: | |
5428 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: | |
5429 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: | |
5430 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
5431 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: | |
5432 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
5433 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
caed7120 YZ |
5434 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5435 | signed_addend - tpoff_base (info), | |
5436 | weak_undef_p); | |
a06ea964 NC |
5437 | *unresolved_reloc_p = FALSE; |
5438 | break; | |
5439 | ||
7bcccb57 MS |
5440 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
5441 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: | |
a6bb11b2 | 5442 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 5443 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 5444 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
7bcccb57 | 5445 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: |
a6bb11b2 | 5446 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
1ada945d | 5447 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
5448 | if (globals->root.sgot == NULL) |
5449 | return bfd_reloc_notsupported; | |
a06ea964 NC |
5450 | value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx) |
5451 | + globals->root.sgotplt->output_section->vma | |
f44a1f8e | 5452 | + globals->root.sgotplt->output_offset |
a06ea964 NC |
5453 | + globals->sgotplt_jump_table_size); |
5454 | ||
caed7120 YZ |
5455 | value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value, |
5456 | 0, weak_undef_p); | |
a06ea964 NC |
5457 | *unresolved_reloc_p = FALSE; |
5458 | break; | |
5459 | ||
5460 | default: | |
5461 | return bfd_reloc_notsupported; | |
5462 | } | |
5463 | ||
5464 | if (saved_addend) | |
5465 | *saved_addend = value; | |
5466 | ||
5467 | /* Only apply the final relocation in a sequence. */ | |
5468 | if (save_addend) | |
5469 | return bfd_reloc_continue; | |
5470 | ||
caed7120 YZ |
5471 | return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, |
5472 | howto, value); | |
a06ea964 NC |
5473 | } |
5474 | ||
5475 | /* Handle TLS relaxations. Relaxing is possible for symbols that use | |
5476 | R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static | |
5477 | link. | |
5478 | ||
5479 | Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller | |
5480 | is to then call final_link_relocate. Return other values in the | |
5481 | case of error. */ | |
5482 | ||
5483 | static bfd_reloc_status_type | |
cec5225b | 5484 | elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals, |
a06ea964 NC |
5485 | bfd *input_bfd, bfd_byte *contents, |
5486 | Elf_Internal_Rela *rel, struct elf_link_hash_entry *h) | |
5487 | { | |
5488 | bfd_boolean is_local = h == NULL; | |
cec5225b | 5489 | unsigned int r_type = ELFNN_R_TYPE (rel->r_info); |
a06ea964 NC |
5490 | unsigned long insn; |
5491 | ||
5492 | BFD_ASSERT (globals && input_bfd && contents && rel); | |
5493 | ||
a6bb11b2 | 5494 | switch (elfNN_aarch64_bfd_reloc_from_type (r_type)) |
a06ea964 | 5495 | { |
a6bb11b2 | 5496 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
ce336788 | 5497 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
a06ea964 NC |
5498 | if (is_local) |
5499 | { | |
5500 | /* GD->LE relaxation: | |
5501 | adrp x0, :tlsgd:var => movz x0, :tprel_g1:var | |
5502 | or | |
5503 | adrp x0, :tlsdesc:var => movz x0, :tprel_g1:var | |
5504 | */ | |
5505 | bfd_putl32 (0xd2a00000, contents + rel->r_offset); | |
5506 | return bfd_reloc_continue; | |
5507 | } | |
5508 | else | |
5509 | { | |
5510 | /* GD->IE relaxation: | |
5511 | adrp x0, :tlsgd:var => adrp x0, :gottprel:var | |
5512 | or | |
5513 | adrp x0, :tlsdesc:var => adrp x0, :gottprel:var | |
5514 | */ | |
a06ea964 NC |
5515 | return bfd_reloc_continue; |
5516 | } | |
5517 | ||
389b8029 MS |
5518 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
5519 | BFD_ASSERT (0); | |
5520 | break; | |
5521 | ||
1ada945d MS |
5522 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
5523 | if (is_local) | |
5524 | { | |
5525 | /* Tiny TLSDESC->LE relaxation: | |
5526 | ldr x1, :tlsdesc:var => movz x0, #:tprel_g1:var | |
5527 | adr x0, :tlsdesc:var => movk x0, #:tprel_g0_nc:var | |
5528 | .tlsdesccall var | |
5529 | blr x1 => nop | |
5530 | */ | |
5531 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); | |
5532 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
5533 | ||
5534 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5535 | AARCH64_R (TLSLE_MOVW_TPREL_G0_NC)); | |
5536 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5537 | ||
5538 | bfd_putl32 (0xd2a00000, contents + rel->r_offset); | |
5539 | bfd_putl32 (0xf2800000, contents + rel->r_offset + 4); | |
5540 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); | |
5541 | return bfd_reloc_continue; | |
5542 | } | |
5543 | else | |
5544 | { | |
5545 | /* Tiny TLSDESC->IE relaxation: | |
5546 | ldr x1, :tlsdesc:var => ldr x0, :gottprel:var | |
5547 | adr x0, :tlsdesc:var => nop | |
5548 | .tlsdesccall var | |
5549 | blr x1 => nop | |
5550 | */ | |
5551 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21)); | |
5552 | BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL)); | |
5553 | ||
5554 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5555 | rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5556 | ||
5557 | bfd_putl32 (0x58000000, contents + rel->r_offset); | |
5558 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4); | |
5559 | bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8); | |
5560 | return bfd_reloc_continue; | |
5561 | } | |
5562 | ||
3c12b054 MS |
5563 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
5564 | if (is_local) | |
5565 | { | |
5566 | /* Tiny GD->LE relaxation: | |
5567 | adr x0, :tlsgd:var => mrs x1, tpidr_el0 | |
5568 | bl __tls_get_addr => add x0, x1, #:tprel_hi12:x, lsl #12 | |
5569 | nop => add x0, x0, #:tprel_lo12_nc:x | |
5570 | */ | |
5571 | ||
5572 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
5573 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
5574 | ||
5575 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0); | |
5576 | bfd_putl32 (0x91400020, contents + rel->r_offset + 4); | |
5577 | bfd_putl32 (0x91000000, contents + rel->r_offset + 8); | |
5578 | ||
5579 | rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5580 | AARCH64_R (TLSLE_ADD_TPREL_LO12_NC)); | |
5581 | rel[1].r_offset = rel->r_offset + 8; | |
5582 | ||
5583 | /* Move the current relocation to the second instruction in | |
5584 | the sequence. */ | |
5585 | rel->r_offset += 4; | |
5586 | rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), | |
5587 | AARCH64_R (TLSLE_ADD_TPREL_HI12)); | |
5588 | return bfd_reloc_continue; | |
5589 | } | |
5590 | else | |
5591 | { | |
5592 | /* Tiny GD->IE relaxation: | |
5593 | adr x0, :tlsgd:var => ldr x0, :gottprel:var | |
5594 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
5595 | nop => add x0, x0, x1 | |
5596 | */ | |
5597 | ||
5598 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
5599 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
5600 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5601 | ||
5602 | bfd_putl32 (0x58000000, contents + rel->r_offset); | |
5603 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); | |
5604 | bfd_putl32 (0x8b000020, contents + rel->r_offset + 8); | |
5605 | return bfd_reloc_continue; | |
5606 | } | |
5607 | ||
043bf05a MS |
5608 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
5609 | return bfd_reloc_continue; | |
5610 | ||
a6bb11b2 | 5611 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
a06ea964 NC |
5612 | if (is_local) |
5613 | { | |
5614 | /* GD->LE relaxation: | |
5615 | ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var | |
5616 | */ | |
5617 | bfd_putl32 (0xf2800000, contents + rel->r_offset); | |
5618 | return bfd_reloc_continue; | |
5619 | } | |
5620 | else | |
5621 | { | |
5622 | /* GD->IE relaxation: | |
5623 | ldr xd, [x0, #:tlsdesc_lo12:var] => ldr x0, [x0, #:gottprel_lo12:var] | |
5624 | */ | |
5625 | insn = bfd_getl32 (contents + rel->r_offset); | |
fa85fb9a | 5626 | insn &= 0xffffffe0; |
a06ea964 NC |
5627 | bfd_putl32 (insn, contents + rel->r_offset); |
5628 | return bfd_reloc_continue; | |
5629 | } | |
5630 | ||
a6bb11b2 | 5631 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a06ea964 NC |
5632 | if (is_local) |
5633 | { | |
5634 | /* GD->LE relaxation | |
5635 | add x0, #:tlsgd_lo12:var => movk x0, :tprel_g0_nc:var | |
5636 | bl __tls_get_addr => mrs x1, tpidr_el0 | |
5637 | nop => add x0, x1, x0 | |
5638 | */ | |
5639 | ||
5640 | /* First kill the tls_get_addr reloc on the bl instruction. */ | |
5641 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
cec5225b | 5642 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 NC |
5643 | |
5644 | bfd_putl32 (0xf2800000, contents + rel->r_offset); | |
5645 | bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4); | |
5646 | bfd_putl32 (0x8b000020, contents + rel->r_offset + 8); | |
5647 | return bfd_reloc_continue; | |
5648 | } | |
5649 | else | |
5650 | { | |
5651 | /* GD->IE relaxation | |
5652 | ADD x0, #:tlsgd_lo12:var => ldr x0, [x0, #:gottprel_lo12:var] | |
5653 | BL __tls_get_addr => mrs x1, tpidr_el0 | |
5654 | R_AARCH64_CALL26 | |
5655 | NOP => add x0, x1, x0 | |
5656 | */ | |
5657 | ||
a6bb11b2 | 5658 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); |
a06ea964 NC |
5659 | |
5660 | /* Remove the relocation on the BL instruction. */ | |
cec5225b | 5661 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); |
a06ea964 NC |
5662 | |
5663 | bfd_putl32 (0xf9400000, contents + rel->r_offset); | |
5664 | ||
5665 | /* We choose to fixup the BL and NOP instructions using the | |
5666 | offset from the second relocation to allow flexibility in | |
5667 | scheduling instructions between the ADD and BL. */ | |
5668 | bfd_putl32 (0xd53bd041, contents + rel[1].r_offset); | |
5669 | bfd_putl32 (0x8b000020, contents + rel[1].r_offset + 4); | |
5670 | return bfd_reloc_continue; | |
5671 | } | |
5672 | ||
a6bb11b2 YZ |
5673 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
5674 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
a06ea964 NC |
5675 | /* GD->IE/LE relaxation: |
5676 | add x0, x0, #:tlsdesc_lo12:var => nop | |
5677 | blr xd => nop | |
5678 | */ | |
5679 | bfd_putl32 (INSN_NOP, contents + rel->r_offset); | |
5680 | return bfd_reloc_ok; | |
5681 | ||
a6bb11b2 | 5682 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a06ea964 NC |
5683 | /* IE->LE relaxation: |
5684 | adrp xd, :gottprel:var => movz xd, :tprel_g1:var | |
5685 | */ | |
5686 | if (is_local) | |
5687 | { | |
5688 | insn = bfd_getl32 (contents + rel->r_offset); | |
5689 | bfd_putl32 (0xd2a00000 | (insn & 0x1f), contents + rel->r_offset); | |
5690 | } | |
5691 | return bfd_reloc_continue; | |
5692 | ||
a6bb11b2 | 5693 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: |
a06ea964 NC |
5694 | /* IE->LE relaxation: |
5695 | ldr xd, [xm, #:gottprel_lo12:var] => movk xd, :tprel_g0_nc:var | |
5696 | */ | |
5697 | if (is_local) | |
5698 | { | |
5699 | insn = bfd_getl32 (contents + rel->r_offset); | |
5700 | bfd_putl32 (0xf2800000 | (insn & 0x1f), contents + rel->r_offset); | |
5701 | } | |
5702 | return bfd_reloc_continue; | |
5703 | ||
259364ad JW |
5704 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
5705 | /* LD->LE relaxation (tiny): | |
5706 | adr x0, :tlsldm:x => mrs x0, tpidr_el0 | |
5707 | bl __tls_get_addr => add x0, x0, TCB_SIZE | |
5708 | */ | |
5709 | if (is_local) | |
5710 | { | |
5711 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
5712 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); | |
5713 | /* No need of CALL26 relocation for tls_get_addr. */ | |
5714 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5715 | bfd_putl32 (0xd53bd040, contents + rel->r_offset + 0); | |
5716 | bfd_putl32 (0x91004000, contents + rel->r_offset + 4); | |
5717 | return bfd_reloc_ok; | |
5718 | } | |
5719 | return bfd_reloc_continue; | |
5720 | ||
5721 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: | |
5722 | /* LD->LE relaxation (small): | |
5723 | adrp x0, :tlsldm:x => mrs x0, tpidr_el0 | |
5724 | */ | |
5725 | if (is_local) | |
5726 | { | |
5727 | bfd_putl32 (0xd53bd040, contents + rel->r_offset); | |
5728 | return bfd_reloc_ok; | |
5729 | } | |
5730 | return bfd_reloc_continue; | |
5731 | ||
5732 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: | |
5733 | /* LD->LE relaxation (small): | |
5734 | add x0, #:tlsldm_lo12:x => add x0, x0, TCB_SIZE | |
5735 | bl __tls_get_addr => nop | |
5736 | */ | |
5737 | if (is_local) | |
5738 | { | |
5739 | BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset); | |
5740 | BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26)); | |
5741 | /* No need of CALL26 relocation for tls_get_addr. */ | |
5742 | rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE); | |
5743 | bfd_putl32 (0x91004000, contents + rel->r_offset + 0); | |
5744 | bfd_putl32 (0xd503201f, contents + rel->r_offset + 4); | |
5745 | return bfd_reloc_ok; | |
5746 | } | |
5747 | return bfd_reloc_continue; | |
5748 | ||
a06ea964 NC |
5749 | default: |
5750 | return bfd_reloc_continue; | |
5751 | } | |
5752 | ||
5753 | return bfd_reloc_ok; | |
5754 | } | |
5755 | ||
5756 | /* Relocate an AArch64 ELF section. */ | |
5757 | ||
5758 | static bfd_boolean | |
cec5225b | 5759 | elfNN_aarch64_relocate_section (bfd *output_bfd, |
a06ea964 NC |
5760 | struct bfd_link_info *info, |
5761 | bfd *input_bfd, | |
5762 | asection *input_section, | |
5763 | bfd_byte *contents, | |
5764 | Elf_Internal_Rela *relocs, | |
5765 | Elf_Internal_Sym *local_syms, | |
5766 | asection **local_sections) | |
5767 | { | |
5768 | Elf_Internal_Shdr *symtab_hdr; | |
5769 | struct elf_link_hash_entry **sym_hashes; | |
5770 | Elf_Internal_Rela *rel; | |
5771 | Elf_Internal_Rela *relend; | |
5772 | const char *name; | |
cec5225b | 5773 | struct elf_aarch64_link_hash_table *globals; |
a06ea964 NC |
5774 | bfd_boolean save_addend = FALSE; |
5775 | bfd_vma addend = 0; | |
5776 | ||
cec5225b | 5777 | globals = elf_aarch64_hash_table (info); |
a06ea964 NC |
5778 | |
5779 | symtab_hdr = &elf_symtab_hdr (input_bfd); | |
5780 | sym_hashes = elf_sym_hashes (input_bfd); | |
5781 | ||
5782 | rel = relocs; | |
5783 | relend = relocs + input_section->reloc_count; | |
5784 | for (; rel < relend; rel++) | |
5785 | { | |
5786 | unsigned int r_type; | |
a6bb11b2 YZ |
5787 | bfd_reloc_code_real_type bfd_r_type; |
5788 | bfd_reloc_code_real_type relaxed_bfd_r_type; | |
a06ea964 NC |
5789 | reloc_howto_type *howto; |
5790 | unsigned long r_symndx; | |
5791 | Elf_Internal_Sym *sym; | |
5792 | asection *sec; | |
5793 | struct elf_link_hash_entry *h; | |
5794 | bfd_vma relocation; | |
5795 | bfd_reloc_status_type r; | |
5796 | arelent bfd_reloc; | |
5797 | char sym_type; | |
5798 | bfd_boolean unresolved_reloc = FALSE; | |
5799 | char *error_message = NULL; | |
5800 | ||
cec5225b YZ |
5801 | r_symndx = ELFNN_R_SYM (rel->r_info); |
5802 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 | 5803 | |
cec5225b | 5804 | bfd_reloc.howto = elfNN_aarch64_howto_from_type (r_type); |
a06ea964 NC |
5805 | howto = bfd_reloc.howto; |
5806 | ||
7fcfd62d NC |
5807 | if (howto == NULL) |
5808 | { | |
5809 | (*_bfd_error_handler) | |
5810 | (_("%B: unrecognized relocation (0x%x) in section `%A'"), | |
5811 | input_bfd, input_section, r_type); | |
5812 | return FALSE; | |
5813 | } | |
a6bb11b2 | 5814 | bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto); |
7fcfd62d | 5815 | |
a06ea964 NC |
5816 | h = NULL; |
5817 | sym = NULL; | |
5818 | sec = NULL; | |
5819 | ||
5820 | if (r_symndx < symtab_hdr->sh_info) | |
5821 | { | |
5822 | sym = local_syms + r_symndx; | |
cec5225b | 5823 | sym_type = ELFNN_ST_TYPE (sym->st_info); |
a06ea964 NC |
5824 | sec = local_sections[r_symndx]; |
5825 | ||
5826 | /* An object file might have a reference to a local | |
5827 | undefined symbol. This is a daft object file, but we | |
5828 | should at least do something about it. */ | |
5829 | if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL | |
5830 | && bfd_is_und_section (sec) | |
5831 | && ELF_ST_BIND (sym->st_info) != STB_WEAK) | |
5832 | { | |
5833 | if (!info->callbacks->undefined_symbol | |
5834 | (info, bfd_elf_string_from_elf_section | |
5835 | (input_bfd, symtab_hdr->sh_link, sym->st_name), | |
5836 | input_bfd, input_section, rel->r_offset, TRUE)) | |
5837 | return FALSE; | |
5838 | } | |
5839 | ||
a06ea964 | 5840 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
1419bbe5 WN |
5841 | |
5842 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
0e1862bb | 5843 | if (!bfd_link_relocatable (info) |
1419bbe5 WN |
5844 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
5845 | { | |
5846 | h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd, | |
5847 | rel, FALSE); | |
5848 | if (h == NULL) | |
5849 | abort (); | |
5850 | ||
5851 | /* Set STT_GNU_IFUNC symbol value. */ | |
5852 | h->root.u.def.value = sym->st_value; | |
5853 | h->root.u.def.section = sec; | |
5854 | } | |
a06ea964 NC |
5855 | } |
5856 | else | |
5857 | { | |
62d887d4 | 5858 | bfd_boolean warned, ignored; |
a06ea964 NC |
5859 | |
5860 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
5861 | r_symndx, symtab_hdr, sym_hashes, | |
5862 | h, sec, relocation, | |
62d887d4 | 5863 | unresolved_reloc, warned, ignored); |
a06ea964 NC |
5864 | |
5865 | sym_type = h->type; | |
5866 | } | |
5867 | ||
5868 | if (sec != NULL && discarded_section (sec)) | |
5869 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
5870 | rel, 1, relend, howto, 0, contents); | |
5871 | ||
0e1862bb | 5872 | if (bfd_link_relocatable (info)) |
2e0488d3 | 5873 | continue; |
a06ea964 NC |
5874 | |
5875 | if (h != NULL) | |
5876 | name = h->root.root.string; | |
5877 | else | |
5878 | { | |
5879 | name = (bfd_elf_string_from_elf_section | |
5880 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
5881 | if (name == NULL || *name == '\0') | |
5882 | name = bfd_section_name (input_bfd, sec); | |
5883 | } | |
5884 | ||
5885 | if (r_symndx != 0 | |
5886 | && r_type != R_AARCH64_NONE | |
5887 | && r_type != R_AARCH64_NULL | |
5888 | && (h == NULL | |
5889 | || h->root.type == bfd_link_hash_defined | |
5890 | || h->root.type == bfd_link_hash_defweak) | |
a6bb11b2 | 5891 | && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS)) |
a06ea964 NC |
5892 | { |
5893 | (*_bfd_error_handler) | |
5894 | ((sym_type == STT_TLS | |
5895 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") | |
5896 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")), | |
5897 | input_bfd, | |
5898 | input_section, (long) rel->r_offset, howto->name, name); | |
5899 | } | |
5900 | ||
a06ea964 NC |
5901 | /* We relax only if we can see that there can be a valid transition |
5902 | from a reloc type to another. | |
cec5225b | 5903 | We call elfNN_aarch64_final_link_relocate unless we're completely |
a06ea964 NC |
5904 | done, i.e., the relaxation produced the final output we want. */ |
5905 | ||
a6bb11b2 YZ |
5906 | relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, |
5907 | h, r_symndx); | |
5908 | if (relaxed_bfd_r_type != bfd_r_type) | |
a06ea964 | 5909 | { |
a6bb11b2 YZ |
5910 | bfd_r_type = relaxed_bfd_r_type; |
5911 | howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type); | |
5912 | BFD_ASSERT (howto != NULL); | |
5913 | r_type = howto->type; | |
cec5225b | 5914 | r = elfNN_aarch64_tls_relax (globals, input_bfd, contents, rel, h); |
a06ea964 NC |
5915 | unresolved_reloc = 0; |
5916 | } | |
5917 | else | |
5918 | r = bfd_reloc_continue; | |
5919 | ||
5920 | /* There may be multiple consecutive relocations for the | |
5921 | same offset. In that case we are supposed to treat the | |
5922 | output of each relocation as the addend for the next. */ | |
5923 | if (rel + 1 < relend | |
5924 | && rel->r_offset == rel[1].r_offset | |
cec5225b YZ |
5925 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE |
5926 | && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL) | |
a06ea964 NC |
5927 | save_addend = TRUE; |
5928 | else | |
5929 | save_addend = FALSE; | |
5930 | ||
5931 | if (r == bfd_reloc_continue) | |
cec5225b | 5932 | r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd, |
a06ea964 NC |
5933 | input_section, contents, rel, |
5934 | relocation, info, sec, | |
5935 | h, &unresolved_reloc, | |
1419bbe5 | 5936 | save_addend, &addend, sym); |
a06ea964 | 5937 | |
a6bb11b2 | 5938 | switch (elfNN_aarch64_bfd_reloc_from_type (r_type)) |
a06ea964 | 5939 | { |
ce336788 | 5940 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
a6bb11b2 | 5941 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 5942 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
73f925cc | 5943 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 5944 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 5945 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
5946 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
5947 | { | |
5948 | bfd_boolean need_relocs = FALSE; | |
5949 | bfd_byte *loc; | |
5950 | int indx; | |
5951 | bfd_vma off; | |
5952 | ||
5953 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
5954 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
5955 | ||
5956 | need_relocs = | |
0e1862bb | 5957 | (bfd_link_pic (info) || indx != 0) && |
a06ea964 NC |
5958 | (h == NULL |
5959 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5960 | || h->root.type != bfd_link_hash_undefweak); | |
5961 | ||
5962 | BFD_ASSERT (globals->root.srelgot != NULL); | |
5963 | ||
5964 | if (need_relocs) | |
5965 | { | |
5966 | Elf_Internal_Rela rela; | |
a6bb11b2 | 5967 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD)); |
a06ea964 NC |
5968 | rela.r_addend = 0; |
5969 | rela.r_offset = globals->root.sgot->output_section->vma + | |
5970 | globals->root.sgot->output_offset + off; | |
5971 | ||
5972 | ||
5973 | loc = globals->root.srelgot->contents; | |
5974 | loc += globals->root.srelgot->reloc_count++ | |
5975 | * RELOC_SIZE (htab); | |
cec5225b | 5976 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 5977 | |
f69e4920 JW |
5978 | bfd_reloc_code_real_type real_type = |
5979 | elfNN_aarch64_bfd_reloc_from_type (r_type); | |
5980 | ||
5981 | if (real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 | |
73f925cc JW |
5982 | || real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 |
5983 | || real_type == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC) | |
77a69ff8 JW |
5984 | { |
5985 | /* For local dynamic, don't generate DTPREL in any case. | |
5986 | Initialize the DTPREL slot into zero, so we get module | |
5987 | base address when invoke runtime TLS resolver. */ | |
5988 | bfd_put_NN (output_bfd, 0, | |
5989 | globals->root.sgot->contents + off | |
5990 | + GOT_ENTRY_SIZE); | |
5991 | } | |
5992 | else if (indx == 0) | |
a06ea964 | 5993 | { |
cec5225b | 5994 | bfd_put_NN (output_bfd, |
a06ea964 NC |
5995 | relocation - dtpoff_base (info), |
5996 | globals->root.sgot->contents + off | |
5997 | + GOT_ENTRY_SIZE); | |
5998 | } | |
5999 | else | |
6000 | { | |
6001 | /* This TLS symbol is global. We emit a | |
6002 | relocation to fixup the tls offset at load | |
6003 | time. */ | |
6004 | rela.r_info = | |
a6bb11b2 | 6005 | ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL)); |
a06ea964 NC |
6006 | rela.r_addend = 0; |
6007 | rela.r_offset = | |
6008 | (globals->root.sgot->output_section->vma | |
6009 | + globals->root.sgot->output_offset + off | |
6010 | + GOT_ENTRY_SIZE); | |
6011 | ||
6012 | loc = globals->root.srelgot->contents; | |
6013 | loc += globals->root.srelgot->reloc_count++ | |
6014 | * RELOC_SIZE (globals); | |
cec5225b YZ |
6015 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
6016 | bfd_put_NN (output_bfd, (bfd_vma) 0, | |
a06ea964 NC |
6017 | globals->root.sgot->contents + off |
6018 | + GOT_ENTRY_SIZE); | |
6019 | } | |
6020 | } | |
6021 | else | |
6022 | { | |
cec5225b | 6023 | bfd_put_NN (output_bfd, (bfd_vma) 1, |
a06ea964 | 6024 | globals->root.sgot->contents + off); |
cec5225b | 6025 | bfd_put_NN (output_bfd, |
a06ea964 NC |
6026 | relocation - dtpoff_base (info), |
6027 | globals->root.sgot->contents + off | |
6028 | + GOT_ENTRY_SIZE); | |
6029 | } | |
6030 | ||
6031 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
6032 | } | |
6033 | break; | |
6034 | ||
a6bb11b2 YZ |
6035 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
6036 | case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC: | |
043bf05a | 6037 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
a06ea964 NC |
6038 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
6039 | { | |
6040 | bfd_boolean need_relocs = FALSE; | |
6041 | bfd_byte *loc; | |
6042 | int indx; | |
6043 | bfd_vma off; | |
6044 | ||
6045 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
6046 | ||
6047 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
6048 | ||
6049 | need_relocs = | |
0e1862bb | 6050 | (bfd_link_pic (info) || indx != 0) && |
a06ea964 NC |
6051 | (h == NULL |
6052 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6053 | || h->root.type != bfd_link_hash_undefweak); | |
6054 | ||
6055 | BFD_ASSERT (globals->root.srelgot != NULL); | |
6056 | ||
6057 | if (need_relocs) | |
6058 | { | |
6059 | Elf_Internal_Rela rela; | |
6060 | ||
6061 | if (indx == 0) | |
6062 | rela.r_addend = relocation - dtpoff_base (info); | |
6063 | else | |
6064 | rela.r_addend = 0; | |
6065 | ||
a6bb11b2 | 6066 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL)); |
a06ea964 NC |
6067 | rela.r_offset = globals->root.sgot->output_section->vma + |
6068 | globals->root.sgot->output_offset + off; | |
6069 | ||
6070 | loc = globals->root.srelgot->contents; | |
6071 | loc += globals->root.srelgot->reloc_count++ | |
6072 | * RELOC_SIZE (htab); | |
6073 | ||
cec5225b | 6074 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 6075 | |
cec5225b | 6076 | bfd_put_NN (output_bfd, rela.r_addend, |
a06ea964 NC |
6077 | globals->root.sgot->contents + off); |
6078 | } | |
6079 | else | |
cec5225b | 6080 | bfd_put_NN (output_bfd, relocation - tpoff_base (info), |
a06ea964 NC |
6081 | globals->root.sgot->contents + off); |
6082 | ||
6083 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
6084 | } | |
6085 | break; | |
6086 | ||
7bcccb57 | 6087 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
a6bb11b2 | 6088 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: |
389b8029 | 6089 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
a6bb11b2 | 6090 | case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC: |
1ada945d | 6091 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a06ea964 NC |
6092 | if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx)) |
6093 | { | |
6094 | bfd_boolean need_relocs = FALSE; | |
6095 | int indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
6096 | bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx); | |
6097 | ||
6098 | need_relocs = (h == NULL | |
6099 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6100 | || h->root.type != bfd_link_hash_undefweak); | |
6101 | ||
6102 | BFD_ASSERT (globals->root.srelgot != NULL); | |
6103 | BFD_ASSERT (globals->root.sgot != NULL); | |
6104 | ||
6105 | if (need_relocs) | |
6106 | { | |
6107 | bfd_byte *loc; | |
6108 | Elf_Internal_Rela rela; | |
a6bb11b2 YZ |
6109 | rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC)); |
6110 | ||
a06ea964 NC |
6111 | rela.r_addend = 0; |
6112 | rela.r_offset = (globals->root.sgotplt->output_section->vma | |
6113 | + globals->root.sgotplt->output_offset | |
6114 | + off + globals->sgotplt_jump_table_size); | |
6115 | ||
6116 | if (indx == 0) | |
6117 | rela.r_addend = relocation - dtpoff_base (info); | |
6118 | ||
6119 | /* Allocate the next available slot in the PLT reloc | |
6120 | section to hold our R_AARCH64_TLSDESC, the next | |
6121 | available slot is determined from reloc_count, | |
6122 | which we step. But note, reloc_count was | |
6123 | artifically moved down while allocating slots for | |
6124 | real PLT relocs such that all of the PLT relocs | |
6125 | will fit above the initial reloc_count and the | |
6126 | extra stuff will fit below. */ | |
6127 | loc = globals->root.srelplt->contents; | |
6128 | loc += globals->root.srelplt->reloc_count++ | |
6129 | * RELOC_SIZE (globals); | |
6130 | ||
cec5225b | 6131 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 | 6132 | |
cec5225b | 6133 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
6134 | globals->root.sgotplt->contents + off + |
6135 | globals->sgotplt_jump_table_size); | |
cec5225b | 6136 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
6137 | globals->root.sgotplt->contents + off + |
6138 | globals->sgotplt_jump_table_size + | |
6139 | GOT_ENTRY_SIZE); | |
6140 | } | |
6141 | ||
6142 | symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx); | |
6143 | } | |
6144 | break; | |
a6bb11b2 YZ |
6145 | default: |
6146 | break; | |
a06ea964 NC |
6147 | } |
6148 | ||
6149 | if (!save_addend) | |
6150 | addend = 0; | |
6151 | ||
6152 | ||
6153 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections | |
6154 | because such sections are not SEC_ALLOC and thus ld.so will | |
6155 | not process them. */ | |
6156 | if (unresolved_reloc | |
6157 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
6158 | && h->def_dynamic) | |
6159 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
6160 | +rel->r_offset) != (bfd_vma) - 1) | |
6161 | { | |
6162 | (*_bfd_error_handler) | |
6163 | (_ | |
6164 | ("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), | |
6165 | input_bfd, input_section, (long) rel->r_offset, howto->name, | |
6166 | h->root.root.string); | |
6167 | return FALSE; | |
6168 | } | |
6169 | ||
6170 | if (r != bfd_reloc_ok && r != bfd_reloc_continue) | |
6171 | { | |
c674f5cd JW |
6172 | bfd_reloc_code_real_type real_r_type |
6173 | = elfNN_aarch64_bfd_reloc_from_type (r_type); | |
6174 | ||
a06ea964 NC |
6175 | switch (r) |
6176 | { | |
6177 | case bfd_reloc_overflow: | |
fdc3b1b1 JW |
6178 | if (!(*info->callbacks->reloc_overflow) |
6179 | (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, | |
6180 | input_bfd, input_section, rel->r_offset)) | |
a06ea964 | 6181 | return FALSE; |
c674f5cd JW |
6182 | if (real_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 |
6183 | || real_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14) | |
6184 | { | |
6185 | (*info->callbacks->warning) | |
6186 | (info, | |
6187 | _("Too many GOT entries for -fpic, " | |
6188 | "please recompile with -fPIC"), | |
6189 | name, input_bfd, input_section, rel->r_offset); | |
6190 | return FALSE; | |
6191 | } | |
a06ea964 NC |
6192 | break; |
6193 | ||
6194 | case bfd_reloc_undefined: | |
6195 | if (!((*info->callbacks->undefined_symbol) | |
6196 | (info, name, input_bfd, input_section, | |
6197 | rel->r_offset, TRUE))) | |
6198 | return FALSE; | |
6199 | break; | |
6200 | ||
6201 | case bfd_reloc_outofrange: | |
6202 | error_message = _("out of range"); | |
6203 | goto common_error; | |
6204 | ||
6205 | case bfd_reloc_notsupported: | |
6206 | error_message = _("unsupported relocation"); | |
6207 | goto common_error; | |
6208 | ||
6209 | case bfd_reloc_dangerous: | |
6210 | /* error_message should already be set. */ | |
6211 | goto common_error; | |
6212 | ||
6213 | default: | |
6214 | error_message = _("unknown error"); | |
6215 | /* Fall through. */ | |
6216 | ||
6217 | common_error: | |
6218 | BFD_ASSERT (error_message != NULL); | |
6219 | if (!((*info->callbacks->reloc_dangerous) | |
6220 | (info, error_message, input_bfd, input_section, | |
6221 | rel->r_offset))) | |
6222 | return FALSE; | |
6223 | break; | |
6224 | } | |
6225 | } | |
6226 | } | |
6227 | ||
6228 | return TRUE; | |
6229 | } | |
6230 | ||
6231 | /* Set the right machine number. */ | |
6232 | ||
6233 | static bfd_boolean | |
cec5225b | 6234 | elfNN_aarch64_object_p (bfd *abfd) |
a06ea964 | 6235 | { |
cec5225b YZ |
6236 | #if ARCH_SIZE == 32 |
6237 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32); | |
6238 | #else | |
a06ea964 | 6239 | bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64); |
cec5225b | 6240 | #endif |
a06ea964 NC |
6241 | return TRUE; |
6242 | } | |
6243 | ||
6244 | /* Function to keep AArch64 specific flags in the ELF header. */ | |
6245 | ||
6246 | static bfd_boolean | |
cec5225b | 6247 | elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags) |
a06ea964 NC |
6248 | { |
6249 | if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags) | |
6250 | { | |
6251 | } | |
6252 | else | |
6253 | { | |
6254 | elf_elfheader (abfd)->e_flags = flags; | |
6255 | elf_flags_init (abfd) = TRUE; | |
6256 | } | |
6257 | ||
6258 | return TRUE; | |
6259 | } | |
6260 | ||
a06ea964 NC |
6261 | /* Merge backend specific data from an object file to the output |
6262 | object file when linking. */ | |
6263 | ||
6264 | static bfd_boolean | |
cec5225b | 6265 | elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
a06ea964 NC |
6266 | { |
6267 | flagword out_flags; | |
6268 | flagword in_flags; | |
6269 | bfd_boolean flags_compatible = TRUE; | |
6270 | asection *sec; | |
6271 | ||
6272 | /* Check if we have the same endianess. */ | |
6273 | if (!_bfd_generic_verify_endian_match (ibfd, obfd)) | |
6274 | return FALSE; | |
6275 | ||
6276 | if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd)) | |
6277 | return TRUE; | |
6278 | ||
6279 | /* The input BFD must have had its flags initialised. */ | |
6280 | /* The following seems bogus to me -- The flags are initialized in | |
6281 | the assembler but I don't think an elf_flags_init field is | |
6282 | written into the object. */ | |
6283 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ | |
6284 | ||
6285 | in_flags = elf_elfheader (ibfd)->e_flags; | |
6286 | out_flags = elf_elfheader (obfd)->e_flags; | |
6287 | ||
6288 | if (!elf_flags_init (obfd)) | |
6289 | { | |
6290 | /* If the input is the default architecture and had the default | |
6291 | flags then do not bother setting the flags for the output | |
6292 | architecture, instead allow future merges to do this. If no | |
6293 | future merges ever set these flags then they will retain their | |
6294 | uninitialised values, which surprise surprise, correspond | |
6295 | to the default values. */ | |
6296 | if (bfd_get_arch_info (ibfd)->the_default | |
6297 | && elf_elfheader (ibfd)->e_flags == 0) | |
6298 | return TRUE; | |
6299 | ||
6300 | elf_flags_init (obfd) = TRUE; | |
6301 | elf_elfheader (obfd)->e_flags = in_flags; | |
6302 | ||
6303 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
6304 | && bfd_get_arch_info (obfd)->the_default) | |
6305 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
6306 | bfd_get_mach (ibfd)); | |
6307 | ||
6308 | return TRUE; | |
6309 | } | |
6310 | ||
6311 | /* Identical flags must be compatible. */ | |
6312 | if (in_flags == out_flags) | |
6313 | return TRUE; | |
6314 | ||
6315 | /* Check to see if the input BFD actually contains any sections. If | |
6316 | not, its flags may not have been initialised either, but it | |
6317 | cannot actually cause any incompatiblity. Do not short-circuit | |
6318 | dynamic objects; their section list may be emptied by | |
6319 | elf_link_add_object_symbols. | |
6320 | ||
6321 | Also check to see if there are no code sections in the input. | |
6322 | In this case there is no need to check for code specific flags. | |
6323 | XXX - do we need to worry about floating-point format compatability | |
6324 | in data sections ? */ | |
6325 | if (!(ibfd->flags & DYNAMIC)) | |
6326 | { | |
6327 | bfd_boolean null_input_bfd = TRUE; | |
6328 | bfd_boolean only_data_sections = TRUE; | |
6329 | ||
6330 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
6331 | { | |
6332 | if ((bfd_get_section_flags (ibfd, sec) | |
6333 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
6334 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
6335 | only_data_sections = FALSE; | |
6336 | ||
6337 | null_input_bfd = FALSE; | |
6338 | break; | |
6339 | } | |
6340 | ||
6341 | if (null_input_bfd || only_data_sections) | |
6342 | return TRUE; | |
6343 | } | |
6344 | ||
6345 | return flags_compatible; | |
6346 | } | |
6347 | ||
6348 | /* Display the flags field. */ | |
6349 | ||
6350 | static bfd_boolean | |
cec5225b | 6351 | elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr) |
a06ea964 NC |
6352 | { |
6353 | FILE *file = (FILE *) ptr; | |
6354 | unsigned long flags; | |
6355 | ||
6356 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
6357 | ||
6358 | /* Print normal ELF private data. */ | |
6359 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
6360 | ||
6361 | flags = elf_elfheader (abfd)->e_flags; | |
6362 | /* Ignore init flag - it may not be set, despite the flags field | |
6363 | containing valid data. */ | |
6364 | ||
6365 | /* xgettext:c-format */ | |
6366 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
6367 | ||
6368 | if (flags) | |
6369 | fprintf (file, _("<Unrecognised flag bits set>")); | |
6370 | ||
6371 | fputc ('\n', file); | |
6372 | ||
6373 | return TRUE; | |
6374 | } | |
6375 | ||
6376 | /* Update the got entry reference counts for the section being removed. */ | |
6377 | ||
6378 | static bfd_boolean | |
cec5225b | 6379 | elfNN_aarch64_gc_sweep_hook (bfd *abfd, |
cb8af559 NC |
6380 | struct bfd_link_info *info, |
6381 | asection *sec, | |
6382 | const Elf_Internal_Rela * relocs) | |
a06ea964 | 6383 | { |
cec5225b | 6384 | struct elf_aarch64_link_hash_table *htab; |
59c108f7 NC |
6385 | Elf_Internal_Shdr *symtab_hdr; |
6386 | struct elf_link_hash_entry **sym_hashes; | |
cb8af559 | 6387 | struct elf_aarch64_local_symbol *locals; |
59c108f7 NC |
6388 | const Elf_Internal_Rela *rel, *relend; |
6389 | ||
0e1862bb | 6390 | if (bfd_link_relocatable (info)) |
59c108f7 NC |
6391 | return TRUE; |
6392 | ||
cec5225b | 6393 | htab = elf_aarch64_hash_table (info); |
59c108f7 NC |
6394 | |
6395 | if (htab == NULL) | |
6396 | return FALSE; | |
6397 | ||
6398 | elf_section_data (sec)->local_dynrel = NULL; | |
6399 | ||
6400 | symtab_hdr = &elf_symtab_hdr (abfd); | |
6401 | sym_hashes = elf_sym_hashes (abfd); | |
6402 | ||
cec5225b | 6403 | locals = elf_aarch64_locals (abfd); |
59c108f7 NC |
6404 | |
6405 | relend = relocs + sec->reloc_count; | |
6406 | for (rel = relocs; rel < relend; rel++) | |
6407 | { | |
6408 | unsigned long r_symndx; | |
6409 | unsigned int r_type; | |
6410 | struct elf_link_hash_entry *h = NULL; | |
6411 | ||
cec5225b | 6412 | r_symndx = ELFNN_R_SYM (rel->r_info); |
8847944f | 6413 | |
59c108f7 NC |
6414 | if (r_symndx >= symtab_hdr->sh_info) |
6415 | { | |
8847944f | 6416 | |
59c108f7 NC |
6417 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
6418 | while (h->root.type == bfd_link_hash_indirect | |
6419 | || h->root.type == bfd_link_hash_warning) | |
6420 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
59c108f7 NC |
6421 | } |
6422 | else | |
6423 | { | |
6424 | Elf_Internal_Sym *isym; | |
6425 | ||
8847944f | 6426 | /* A local symbol. */ |
59c108f7 NC |
6427 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
6428 | abfd, r_symndx); | |
1419bbe5 WN |
6429 | |
6430 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
6431 | if (isym != NULL | |
6432 | && ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
6433 | { | |
6434 | h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, FALSE); | |
6435 | if (h == NULL) | |
6436 | abort (); | |
6437 | } | |
6438 | } | |
6439 | ||
6440 | if (h) | |
6441 | { | |
6442 | struct elf_aarch64_link_hash_entry *eh; | |
6443 | struct elf_dyn_relocs **pp; | |
6444 | struct elf_dyn_relocs *p; | |
6445 | ||
6446 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
6447 | ||
6448 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
6449 | if (p->sec == sec) | |
6450 | { | |
6451 | /* Everything must go for SEC. */ | |
6452 | *pp = p->next; | |
6453 | break; | |
6454 | } | |
59c108f7 NC |
6455 | } |
6456 | ||
cec5225b | 6457 | r_type = ELFNN_R_TYPE (rel->r_info); |
a6bb11b2 | 6458 | switch (aarch64_tls_transition (abfd,info, r_type, h ,r_symndx)) |
59c108f7 | 6459 | { |
a6bb11b2 | 6460 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
7bcccb57 | 6461 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
7018c030 | 6462 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
7bcccb57 | 6463 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 6464 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 6465 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
7bcccb57 MS |
6466 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
6467 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: | |
6468 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
389b8029 | 6469 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
7bcccb57 MS |
6470 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
6471 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: | |
1ada945d | 6472 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a6bb11b2 | 6473 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
7bcccb57 | 6474 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 6475 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 6476 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 6477 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
7bcccb57 | 6478 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 6479 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
73f925cc | 6480 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 6481 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 6482 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a6bb11b2 | 6483 | if (h != NULL) |
59c108f7 NC |
6484 | { |
6485 | if (h->got.refcount > 0) | |
6486 | h->got.refcount -= 1; | |
1419bbe5 WN |
6487 | |
6488 | if (h->type == STT_GNU_IFUNC) | |
6489 | { | |
6490 | if (h->plt.refcount > 0) | |
6491 | h->plt.refcount -= 1; | |
6492 | } | |
59c108f7 | 6493 | } |
cb8af559 | 6494 | else if (locals != NULL) |
59c108f7 | 6495 | { |
cb8af559 NC |
6496 | if (locals[r_symndx].got_refcount > 0) |
6497 | locals[r_symndx].got_refcount -= 1; | |
59c108f7 NC |
6498 | } |
6499 | break; | |
6500 | ||
a6bb11b2 YZ |
6501 | case BFD_RELOC_AARCH64_CALL26: |
6502 | case BFD_RELOC_AARCH64_JUMP26: | |
6503 | /* If this is a local symbol then we resolve it | |
6504 | directly without creating a PLT entry. */ | |
59c108f7 NC |
6505 | if (h == NULL) |
6506 | continue; | |
6507 | ||
6508 | if (h->plt.refcount > 0) | |
6509 | h->plt.refcount -= 1; | |
6510 | break; | |
6511 | ||
ce336788 JW |
6512 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
6513 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
6514 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
614b09ce JW |
6515 | case BFD_RELOC_AARCH64_MOVW_G0_NC: |
6516 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
6517 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
6518 | case BFD_RELOC_AARCH64_MOVW_G3: | |
a6bb11b2 | 6519 | case BFD_RELOC_AARCH64_NN: |
0e1862bb | 6520 | if (h != NULL && bfd_link_executable (info)) |
59c108f7 NC |
6521 | { |
6522 | if (h->plt.refcount > 0) | |
6523 | h->plt.refcount -= 1; | |
6524 | } | |
6525 | break; | |
cec5225b | 6526 | |
59c108f7 NC |
6527 | default: |
6528 | break; | |
6529 | } | |
6530 | } | |
6531 | ||
a06ea964 NC |
6532 | return TRUE; |
6533 | } | |
6534 | ||
6535 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
6536 | regular object. The current definition is in some section of the | |
6537 | dynamic object, but we're not including those sections. We have to | |
6538 | change the definition to something the rest of the link can | |
6539 | understand. */ | |
6540 | ||
6541 | static bfd_boolean | |
cec5225b | 6542 | elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info, |
a06ea964 NC |
6543 | struct elf_link_hash_entry *h) |
6544 | { | |
cec5225b | 6545 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
6546 | asection *s; |
6547 | ||
6548 | /* If this is a function, put it in the procedure linkage table. We | |
6549 | will fill in the contents of the procedure linkage table later, | |
6550 | when we know the address of the .got section. */ | |
1419bbe5 | 6551 | if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt) |
a06ea964 NC |
6552 | { |
6553 | if (h->plt.refcount <= 0 | |
1419bbe5 WN |
6554 | || (h->type != STT_GNU_IFUNC |
6555 | && (SYMBOL_CALLS_LOCAL (info, h) | |
6556 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
6557 | && h->root.type == bfd_link_hash_undefweak)))) | |
a06ea964 NC |
6558 | { |
6559 | /* This case can occur if we saw a CALL26 reloc in | |
6560 | an input file, but the symbol wasn't referred to | |
6561 | by a dynamic object or all references were | |
6562 | garbage collected. In which case we can end up | |
6563 | resolving. */ | |
6564 | h->plt.offset = (bfd_vma) - 1; | |
6565 | h->needs_plt = 0; | |
6566 | } | |
6567 | ||
6568 | return TRUE; | |
6569 | } | |
6570 | else | |
80de0c6d | 6571 | /* Otherwise, reset to -1. */ |
a06ea964 NC |
6572 | h->plt.offset = (bfd_vma) - 1; |
6573 | ||
6574 | ||
6575 | /* If this is a weak symbol, and there is a real definition, the | |
6576 | processor independent code will have arranged for us to see the | |
6577 | real definition first, and we can just use the same value. */ | |
6578 | if (h->u.weakdef != NULL) | |
6579 | { | |
6580 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
6581 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
6582 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
6583 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
6584 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) | |
6585 | h->non_got_ref = h->u.weakdef->non_got_ref; | |
6586 | return TRUE; | |
6587 | } | |
6588 | ||
6589 | /* If we are creating a shared library, we must presume that the | |
6590 | only references to the symbol are via the global offset table. | |
6591 | For such cases we need not do anything here; the relocations will | |
6592 | be handled correctly by relocate_section. */ | |
0e1862bb | 6593 | if (bfd_link_pic (info)) |
a06ea964 NC |
6594 | return TRUE; |
6595 | ||
6596 | /* If there are no references to this symbol that do not use the | |
6597 | GOT, we don't need to generate a copy reloc. */ | |
6598 | if (!h->non_got_ref) | |
6599 | return TRUE; | |
6600 | ||
6601 | /* If -z nocopyreloc was given, we won't generate them either. */ | |
6602 | if (info->nocopyreloc) | |
6603 | { | |
6604 | h->non_got_ref = 0; | |
6605 | return TRUE; | |
6606 | } | |
6607 | ||
6608 | /* We must allocate the symbol in our .dynbss section, which will | |
6609 | become part of the .bss section of the executable. There will be | |
6610 | an entry for this symbol in the .dynsym section. The dynamic | |
6611 | object will contain position independent code, so all references | |
6612 | from the dynamic object to this symbol will go through the global | |
6613 | offset table. The dynamic linker will use the .dynsym entry to | |
6614 | determine the address it must put in the global offset table, so | |
6615 | both the dynamic object and the regular object will refer to the | |
6616 | same memory location for the variable. */ | |
6617 | ||
cec5225b | 6618 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
6619 | |
6620 | /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker | |
6621 | to copy the initial value out of the dynamic object and into the | |
6622 | runtime process image. */ | |
6623 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) | |
6624 | { | |
6625 | htab->srelbss->size += RELOC_SIZE (htab); | |
6626 | h->needs_copy = 1; | |
6627 | } | |
6628 | ||
6629 | s = htab->sdynbss; | |
6630 | ||
6cabe1ea | 6631 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
a06ea964 NC |
6632 | |
6633 | } | |
6634 | ||
6635 | static bfd_boolean | |
cec5225b | 6636 | elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number) |
a06ea964 NC |
6637 | { |
6638 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 6639 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
6640 | if (locals == NULL) |
6641 | { | |
6642 | locals = (struct elf_aarch64_local_symbol *) | |
6643 | bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol)); | |
6644 | if (locals == NULL) | |
6645 | return FALSE; | |
cec5225b | 6646 | elf_aarch64_locals (abfd) = locals; |
a06ea964 NC |
6647 | } |
6648 | return TRUE; | |
6649 | } | |
6650 | ||
cc0efaa8 MS |
6651 | /* Create the .got section to hold the global offset table. */ |
6652 | ||
6653 | static bfd_boolean | |
6654 | aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) | |
6655 | { | |
6656 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
6657 | flagword flags; | |
6658 | asection *s; | |
6659 | struct elf_link_hash_entry *h; | |
6660 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
6661 | ||
6662 | /* This function may be called more than once. */ | |
6663 | s = bfd_get_linker_section (abfd, ".got"); | |
6664 | if (s != NULL) | |
6665 | return TRUE; | |
6666 | ||
6667 | flags = bed->dynamic_sec_flags; | |
6668 | ||
6669 | s = bfd_make_section_anyway_with_flags (abfd, | |
6670 | (bed->rela_plts_and_copies_p | |
6671 | ? ".rela.got" : ".rel.got"), | |
6672 | (bed->dynamic_sec_flags | |
6673 | | SEC_READONLY)); | |
6674 | if (s == NULL | |
6675 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
6676 | return FALSE; | |
6677 | htab->srelgot = s; | |
6678 | ||
6679 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); | |
6680 | if (s == NULL | |
6681 | || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) | |
6682 | return FALSE; | |
6683 | htab->sgot = s; | |
6684 | htab->sgot->size += GOT_ENTRY_SIZE; | |
6685 | ||
6686 | if (bed->want_got_sym) | |
6687 | { | |
6688 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
6689 | (or .got.plt) section. We don't do this in the linker script | |
6690 | because we don't want to define the symbol if we are not creating | |
6691 | a global offset table. */ | |
6692 | h = _bfd_elf_define_linkage_sym (abfd, info, s, | |
6693 | "_GLOBAL_OFFSET_TABLE_"); | |
6694 | elf_hash_table (info)->hgot = h; | |
6695 | if (h == NULL) | |
6696 | return FALSE; | |
6697 | } | |
6698 | ||
6699 | if (bed->want_got_plt) | |
6700 | { | |
6701 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); | |
6702 | if (s == NULL | |
6703 | || !bfd_set_section_alignment (abfd, s, | |
6704 | bed->s->log_file_align)) | |
6705 | return FALSE; | |
6706 | htab->sgotplt = s; | |
6707 | } | |
6708 | ||
6709 | /* The first bit of the global offset table is the header. */ | |
6710 | s->size += bed->got_header_size; | |
6711 | ||
6712 | return TRUE; | |
6713 | } | |
6714 | ||
a06ea964 NC |
6715 | /* Look through the relocs for a section during the first phase. */ |
6716 | ||
6717 | static bfd_boolean | |
cec5225b | 6718 | elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
a06ea964 NC |
6719 | asection *sec, const Elf_Internal_Rela *relocs) |
6720 | { | |
6721 | Elf_Internal_Shdr *symtab_hdr; | |
6722 | struct elf_link_hash_entry **sym_hashes; | |
6723 | const Elf_Internal_Rela *rel; | |
6724 | const Elf_Internal_Rela *rel_end; | |
6725 | asection *sreloc; | |
6726 | ||
cec5225b | 6727 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 6728 | |
0e1862bb | 6729 | if (bfd_link_relocatable (info)) |
a06ea964 NC |
6730 | return TRUE; |
6731 | ||
6732 | BFD_ASSERT (is_aarch64_elf (abfd)); | |
6733 | ||
cec5225b | 6734 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
6735 | sreloc = NULL; |
6736 | ||
6737 | symtab_hdr = &elf_symtab_hdr (abfd); | |
6738 | sym_hashes = elf_sym_hashes (abfd); | |
a06ea964 NC |
6739 | |
6740 | rel_end = relocs + sec->reloc_count; | |
6741 | for (rel = relocs; rel < rel_end; rel++) | |
6742 | { | |
6743 | struct elf_link_hash_entry *h; | |
6744 | unsigned long r_symndx; | |
6745 | unsigned int r_type; | |
a6bb11b2 | 6746 | bfd_reloc_code_real_type bfd_r_type; |
1419bbe5 | 6747 | Elf_Internal_Sym *isym; |
a06ea964 | 6748 | |
cec5225b YZ |
6749 | r_symndx = ELFNN_R_SYM (rel->r_info); |
6750 | r_type = ELFNN_R_TYPE (rel->r_info); | |
a06ea964 NC |
6751 | |
6752 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
6753 | { | |
6754 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd, | |
6755 | r_symndx); | |
6756 | return FALSE; | |
6757 | } | |
6758 | ||
ed5acf27 | 6759 | if (r_symndx < symtab_hdr->sh_info) |
1419bbe5 WN |
6760 | { |
6761 | /* A local symbol. */ | |
6762 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
6763 | abfd, r_symndx); | |
6764 | if (isym == NULL) | |
6765 | return FALSE; | |
6766 | ||
6767 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
6768 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
6769 | { | |
6770 | h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, | |
6771 | TRUE); | |
6772 | if (h == NULL) | |
6773 | return FALSE; | |
6774 | ||
6775 | /* Fake a STT_GNU_IFUNC symbol. */ | |
6776 | h->type = STT_GNU_IFUNC; | |
6777 | h->def_regular = 1; | |
6778 | h->ref_regular = 1; | |
6779 | h->forced_local = 1; | |
6780 | h->root.type = bfd_link_hash_defined; | |
6781 | } | |
6782 | else | |
6783 | h = NULL; | |
6784 | } | |
a06ea964 NC |
6785 | else |
6786 | { | |
6787 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
6788 | while (h->root.type == bfd_link_hash_indirect | |
6789 | || h->root.type == bfd_link_hash_warning) | |
6790 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 AM |
6791 | |
6792 | /* PR15323, ref flags aren't set for references in the same | |
6793 | object. */ | |
6794 | h->root.non_ir_ref = 1; | |
a06ea964 NC |
6795 | } |
6796 | ||
6797 | /* Could be done earlier, if h were already available. */ | |
a6bb11b2 | 6798 | bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx); |
a06ea964 | 6799 | |
1419bbe5 WN |
6800 | if (h != NULL) |
6801 | { | |
6802 | /* Create the ifunc sections for static executables. If we | |
6803 | never see an indirect function symbol nor we are building | |
6804 | a static executable, those sections will be empty and | |
6805 | won't appear in output. */ | |
6806 | switch (bfd_r_type) | |
6807 | { | |
6808 | default: | |
6809 | break; | |
6810 | ||
ce336788 JW |
6811 | case BFD_RELOC_AARCH64_ADD_LO12: |
6812 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: | |
6813 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
1419bbe5 | 6814 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 6815 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
1419bbe5 | 6816 | case BFD_RELOC_AARCH64_JUMP26: |
7018c030 | 6817 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
1419bbe5 | 6818 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 6819 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 6820 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
1419bbe5 | 6821 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
ce336788 | 6822 | case BFD_RELOC_AARCH64_NN: |
1419bbe5 WN |
6823 | if (htab->root.dynobj == NULL) |
6824 | htab->root.dynobj = abfd; | |
6825 | if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info)) | |
6826 | return FALSE; | |
6827 | break; | |
6828 | } | |
6829 | ||
6830 | /* It is referenced by a non-shared object. */ | |
6831 | h->ref_regular = 1; | |
6832 | h->root.non_ir_ref = 1; | |
6833 | } | |
6834 | ||
a6bb11b2 | 6835 | switch (bfd_r_type) |
a06ea964 | 6836 | { |
a6bb11b2 | 6837 | case BFD_RELOC_AARCH64_NN: |
a06ea964 NC |
6838 | |
6839 | /* We don't need to handle relocs into sections not going into | |
6840 | the "real" output. */ | |
6841 | if ((sec->flags & SEC_ALLOC) == 0) | |
6842 | break; | |
6843 | ||
6844 | if (h != NULL) | |
6845 | { | |
0e1862bb | 6846 | if (!bfd_link_pic (info)) |
a06ea964 NC |
6847 | h->non_got_ref = 1; |
6848 | ||
6849 | h->plt.refcount += 1; | |
6850 | h->pointer_equality_needed = 1; | |
6851 | } | |
6852 | ||
6853 | /* No need to do anything if we're not creating a shared | |
6854 | object. */ | |
0e1862bb | 6855 | if (! bfd_link_pic (info)) |
a06ea964 NC |
6856 | break; |
6857 | ||
6858 | { | |
6859 | struct elf_dyn_relocs *p; | |
6860 | struct elf_dyn_relocs **head; | |
6861 | ||
6862 | /* We must copy these reloc types into the output file. | |
6863 | Create a reloc section in dynobj and make room for | |
6864 | this reloc. */ | |
6865 | if (sreloc == NULL) | |
6866 | { | |
6867 | if (htab->root.dynobj == NULL) | |
6868 | htab->root.dynobj = abfd; | |
6869 | ||
6870 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
0608afa7 | 6871 | (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE); |
a06ea964 NC |
6872 | |
6873 | if (sreloc == NULL) | |
6874 | return FALSE; | |
6875 | } | |
6876 | ||
6877 | /* If this is a global symbol, we count the number of | |
6878 | relocations we need for this symbol. */ | |
6879 | if (h != NULL) | |
6880 | { | |
cec5225b YZ |
6881 | struct elf_aarch64_link_hash_entry *eh; |
6882 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
a06ea964 NC |
6883 | head = &eh->dyn_relocs; |
6884 | } | |
6885 | else | |
6886 | { | |
6887 | /* Track dynamic relocs needed for local syms too. | |
6888 | We really need local syms available to do this | |
6889 | easily. Oh well. */ | |
6890 | ||
6891 | asection *s; | |
6892 | void **vpp; | |
a06ea964 NC |
6893 | |
6894 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
6895 | abfd, r_symndx); | |
6896 | if (isym == NULL) | |
6897 | return FALSE; | |
6898 | ||
6899 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
6900 | if (s == NULL) | |
6901 | s = sec; | |
6902 | ||
6903 | /* Beware of type punned pointers vs strict aliasing | |
6904 | rules. */ | |
6905 | vpp = &(elf_section_data (s)->local_dynrel); | |
6906 | head = (struct elf_dyn_relocs **) vpp; | |
6907 | } | |
6908 | ||
6909 | p = *head; | |
6910 | if (p == NULL || p->sec != sec) | |
6911 | { | |
6912 | bfd_size_type amt = sizeof *p; | |
6913 | p = ((struct elf_dyn_relocs *) | |
6914 | bfd_zalloc (htab->root.dynobj, amt)); | |
6915 | if (p == NULL) | |
6916 | return FALSE; | |
6917 | p->next = *head; | |
6918 | *head = p; | |
6919 | p->sec = sec; | |
6920 | } | |
6921 | ||
6922 | p->count += 1; | |
6923 | ||
6924 | } | |
6925 | break; | |
6926 | ||
6927 | /* RR: We probably want to keep a consistency check that | |
6928 | there are no dangling GOT_PAGE relocs. */ | |
a6bb11b2 | 6929 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
7bcccb57 | 6930 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
7018c030 | 6931 | case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14: |
7bcccb57 | 6932 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
a2e1db00 | 6933 | case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15: |
99ad26cb | 6934 | case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15: |
7bcccb57 MS |
6935 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
6936 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: | |
6937 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
389b8029 | 6938 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
7bcccb57 MS |
6939 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
6940 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: | |
1ada945d | 6941 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
a6bb11b2 | 6942 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
7bcccb57 | 6943 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
3c12b054 | 6944 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
a6bb11b2 | 6945 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
a6bb11b2 | 6946 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
7bcccb57 | 6947 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
043bf05a | 6948 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
73f925cc | 6949 | case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC: |
f69e4920 | 6950 | case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21: |
77a69ff8 | 6951 | case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21: |
a06ea964 NC |
6952 | { |
6953 | unsigned got_type; | |
6954 | unsigned old_got_type; | |
6955 | ||
a6bb11b2 | 6956 | got_type = aarch64_reloc_got_type (bfd_r_type); |
a06ea964 NC |
6957 | |
6958 | if (h) | |
6959 | { | |
6960 | h->got.refcount += 1; | |
cec5225b | 6961 | old_got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
6962 | } |
6963 | else | |
6964 | { | |
6965 | struct elf_aarch64_local_symbol *locals; | |
6966 | ||
cec5225b | 6967 | if (!elfNN_aarch64_allocate_local_symbols |
a06ea964 NC |
6968 | (abfd, symtab_hdr->sh_info)) |
6969 | return FALSE; | |
6970 | ||
cec5225b | 6971 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
6972 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
6973 | locals[r_symndx].got_refcount += 1; | |
6974 | old_got_type = locals[r_symndx].got_type; | |
6975 | } | |
6976 | ||
6977 | /* If a variable is accessed with both general dynamic TLS | |
6978 | methods, two slots may be created. */ | |
6979 | if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type)) | |
6980 | got_type |= old_got_type; | |
6981 | ||
6982 | /* We will already have issued an error message if there | |
6983 | is a TLS/non-TLS mismatch, based on the symbol type. | |
6984 | So just combine any TLS types needed. */ | |
6985 | if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL | |
6986 | && got_type != GOT_NORMAL) | |
6987 | got_type |= old_got_type; | |
6988 | ||
6989 | /* If the symbol is accessed by both IE and GD methods, we | |
6990 | are able to relax. Turn off the GD flag, without | |
6991 | messing up with any other kind of TLS types that may be | |
6992 | involved. */ | |
6993 | if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type)) | |
6994 | got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD); | |
6995 | ||
6996 | if (old_got_type != got_type) | |
6997 | { | |
6998 | if (h != NULL) | |
cec5225b | 6999 | elf_aarch64_hash_entry (h)->got_type = got_type; |
a06ea964 NC |
7000 | else |
7001 | { | |
7002 | struct elf_aarch64_local_symbol *locals; | |
cec5225b | 7003 | locals = elf_aarch64_locals (abfd); |
a06ea964 NC |
7004 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); |
7005 | locals[r_symndx].got_type = got_type; | |
7006 | } | |
7007 | } | |
7008 | ||
cc0efaa8 MS |
7009 | if (htab->root.dynobj == NULL) |
7010 | htab->root.dynobj = abfd; | |
7011 | if (! aarch64_elf_create_got_section (htab->root.dynobj, info)) | |
7012 | return FALSE; | |
a06ea964 NC |
7013 | break; |
7014 | } | |
7015 | ||
614b09ce JW |
7016 | case BFD_RELOC_AARCH64_MOVW_G0_NC: |
7017 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
7018 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
7019 | case BFD_RELOC_AARCH64_MOVW_G3: | |
0e1862bb | 7020 | if (bfd_link_pic (info)) |
614b09ce JW |
7021 | { |
7022 | int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; | |
7023 | (*_bfd_error_handler) | |
7024 | (_("%B: relocation %s against `%s' can not be used when making " | |
7025 | "a shared object; recompile with -fPIC"), | |
7026 | abfd, elfNN_aarch64_howto_table[howto_index].name, | |
7027 | (h) ? h->root.root.string : "a local symbol"); | |
7028 | bfd_set_error (bfd_error_bad_value); | |
7029 | return FALSE; | |
7030 | } | |
7031 | ||
a6bb11b2 YZ |
7032 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
7033 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
7034 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
0e1862bb | 7035 | if (h != NULL && bfd_link_executable (info)) |
a06ea964 NC |
7036 | { |
7037 | /* If this reloc is in a read-only section, we might | |
7038 | need a copy reloc. We can't check reliably at this | |
7039 | stage whether the section is read-only, as input | |
7040 | sections have not yet been mapped to output sections. | |
7041 | Tentatively set the flag for now, and correct in | |
7042 | adjust_dynamic_symbol. */ | |
7043 | h->non_got_ref = 1; | |
7044 | h->plt.refcount += 1; | |
7045 | h->pointer_equality_needed = 1; | |
7046 | } | |
7047 | /* FIXME:: RR need to handle these in shared libraries | |
7048 | and essentially bomb out as these being non-PIC | |
7049 | relocations in shared libraries. */ | |
7050 | break; | |
7051 | ||
a6bb11b2 YZ |
7052 | case BFD_RELOC_AARCH64_CALL26: |
7053 | case BFD_RELOC_AARCH64_JUMP26: | |
a06ea964 NC |
7054 | /* If this is a local symbol then we resolve it |
7055 | directly without creating a PLT entry. */ | |
7056 | if (h == NULL) | |
7057 | continue; | |
7058 | ||
7059 | h->needs_plt = 1; | |
1419bbe5 WN |
7060 | if (h->plt.refcount <= 0) |
7061 | h->plt.refcount = 1; | |
7062 | else | |
7063 | h->plt.refcount += 1; | |
a06ea964 | 7064 | break; |
a6bb11b2 YZ |
7065 | |
7066 | default: | |
7067 | break; | |
a06ea964 NC |
7068 | } |
7069 | } | |
a6bb11b2 | 7070 | |
a06ea964 NC |
7071 | return TRUE; |
7072 | } | |
7073 | ||
7074 | /* Treat mapping symbols as special target symbols. */ | |
7075 | ||
7076 | static bfd_boolean | |
cec5225b | 7077 | elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
7078 | asymbol *sym) |
7079 | { | |
7080 | return bfd_is_aarch64_special_symbol_name (sym->name, | |
7081 | BFD_AARCH64_SPECIAL_SYM_TYPE_ANY); | |
7082 | } | |
7083 | ||
7084 | /* This is a copy of elf_find_function () from elf.c except that | |
7085 | AArch64 mapping symbols are ignored when looking for function names. */ | |
7086 | ||
7087 | static bfd_boolean | |
7088 | aarch64_elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, | |
a06ea964 | 7089 | asymbol **symbols, |
fb167eb2 | 7090 | asection *section, |
a06ea964 NC |
7091 | bfd_vma offset, |
7092 | const char **filename_ptr, | |
7093 | const char **functionname_ptr) | |
7094 | { | |
7095 | const char *filename = NULL; | |
7096 | asymbol *func = NULL; | |
7097 | bfd_vma low_func = 0; | |
7098 | asymbol **p; | |
7099 | ||
7100 | for (p = symbols; *p != NULL; p++) | |
7101 | { | |
7102 | elf_symbol_type *q; | |
7103 | ||
7104 | q = (elf_symbol_type *) * p; | |
7105 | ||
7106 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) | |
7107 | { | |
7108 | default: | |
7109 | break; | |
7110 | case STT_FILE: | |
7111 | filename = bfd_asymbol_name (&q->symbol); | |
7112 | break; | |
7113 | case STT_FUNC: | |
7114 | case STT_NOTYPE: | |
7115 | /* Skip mapping symbols. */ | |
7116 | if ((q->symbol.flags & BSF_LOCAL) | |
7117 | && (bfd_is_aarch64_special_symbol_name | |
7118 | (q->symbol.name, BFD_AARCH64_SPECIAL_SYM_TYPE_ANY))) | |
7119 | continue; | |
7120 | /* Fall through. */ | |
7121 | if (bfd_get_section (&q->symbol) == section | |
7122 | && q->symbol.value >= low_func && q->symbol.value <= offset) | |
7123 | { | |
7124 | func = (asymbol *) q; | |
7125 | low_func = q->symbol.value; | |
7126 | } | |
7127 | break; | |
7128 | } | |
7129 | } | |
7130 | ||
7131 | if (func == NULL) | |
7132 | return FALSE; | |
7133 | ||
7134 | if (filename_ptr) | |
7135 | *filename_ptr = filename; | |
7136 | if (functionname_ptr) | |
7137 | *functionname_ptr = bfd_asymbol_name (func); | |
7138 | ||
7139 | return TRUE; | |
7140 | } | |
7141 | ||
7142 | ||
7143 | /* Find the nearest line to a particular section and offset, for error | |
7144 | reporting. This code is a duplicate of the code in elf.c, except | |
7145 | that it uses aarch64_elf_find_function. */ | |
7146 | ||
7147 | static bfd_boolean | |
cec5225b | 7148 | elfNN_aarch64_find_nearest_line (bfd *abfd, |
a06ea964 | 7149 | asymbol **symbols, |
fb167eb2 | 7150 | asection *section, |
a06ea964 NC |
7151 | bfd_vma offset, |
7152 | const char **filename_ptr, | |
7153 | const char **functionname_ptr, | |
fb167eb2 AM |
7154 | unsigned int *line_ptr, |
7155 | unsigned int *discriminator_ptr) | |
a06ea964 NC |
7156 | { |
7157 | bfd_boolean found = FALSE; | |
7158 | ||
fb167eb2 | 7159 | if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset, |
a06ea964 | 7160 | filename_ptr, functionname_ptr, |
fb167eb2 AM |
7161 | line_ptr, discriminator_ptr, |
7162 | dwarf_debug_sections, 0, | |
a06ea964 NC |
7163 | &elf_tdata (abfd)->dwarf2_find_line_info)) |
7164 | { | |
7165 | if (!*functionname_ptr) | |
fb167eb2 | 7166 | aarch64_elf_find_function (abfd, symbols, section, offset, |
a06ea964 NC |
7167 | *filename_ptr ? NULL : filename_ptr, |
7168 | functionname_ptr); | |
7169 | ||
7170 | return TRUE; | |
7171 | } | |
7172 | ||
fb167eb2 AM |
7173 | /* Skip _bfd_dwarf1_find_nearest_line since no known AArch64 |
7174 | toolchain uses DWARF1. */ | |
7175 | ||
a06ea964 NC |
7176 | if (!_bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, |
7177 | &found, filename_ptr, | |
7178 | functionname_ptr, line_ptr, | |
7179 | &elf_tdata (abfd)->line_info)) | |
7180 | return FALSE; | |
7181 | ||
7182 | if (found && (*functionname_ptr || *line_ptr)) | |
7183 | return TRUE; | |
7184 | ||
7185 | if (symbols == NULL) | |
7186 | return FALSE; | |
7187 | ||
fb167eb2 | 7188 | if (!aarch64_elf_find_function (abfd, symbols, section, offset, |
a06ea964 NC |
7189 | filename_ptr, functionname_ptr)) |
7190 | return FALSE; | |
7191 | ||
7192 | *line_ptr = 0; | |
7193 | return TRUE; | |
7194 | } | |
7195 | ||
7196 | static bfd_boolean | |
cec5225b | 7197 | elfNN_aarch64_find_inliner_info (bfd *abfd, |
a06ea964 NC |
7198 | const char **filename_ptr, |
7199 | const char **functionname_ptr, | |
7200 | unsigned int *line_ptr) | |
7201 | { | |
7202 | bfd_boolean found; | |
7203 | found = _bfd_dwarf2_find_inliner_info | |
7204 | (abfd, filename_ptr, | |
7205 | functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info); | |
7206 | return found; | |
7207 | } | |
7208 | ||
7209 | ||
7210 | static void | |
cec5225b | 7211 | elfNN_aarch64_post_process_headers (bfd *abfd, |
1419bbe5 | 7212 | struct bfd_link_info *link_info) |
a06ea964 NC |
7213 | { |
7214 | Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */ | |
7215 | ||
7216 | i_ehdrp = elf_elfheader (abfd); | |
a06ea964 | 7217 | i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION; |
1419bbe5 | 7218 | |
78245035 | 7219 | _bfd_elf_post_process_headers (abfd, link_info); |
a06ea964 NC |
7220 | } |
7221 | ||
7222 | static enum elf_reloc_type_class | |
cec5225b | 7223 | elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
7e612e98 AM |
7224 | const asection *rel_sec ATTRIBUTE_UNUSED, |
7225 | const Elf_Internal_Rela *rela) | |
a06ea964 | 7226 | { |
cec5225b | 7227 | switch ((int) ELFNN_R_TYPE (rela->r_info)) |
a06ea964 | 7228 | { |
a6bb11b2 | 7229 | case AARCH64_R (RELATIVE): |
a06ea964 | 7230 | return reloc_class_relative; |
a6bb11b2 | 7231 | case AARCH64_R (JUMP_SLOT): |
a06ea964 | 7232 | return reloc_class_plt; |
a6bb11b2 | 7233 | case AARCH64_R (COPY): |
a06ea964 NC |
7234 | return reloc_class_copy; |
7235 | default: | |
7236 | return reloc_class_normal; | |
7237 | } | |
7238 | } | |
7239 | ||
a06ea964 NC |
7240 | /* Handle an AArch64 specific section when reading an object file. This is |
7241 | called when bfd_section_from_shdr finds a section with an unknown | |
7242 | type. */ | |
7243 | ||
7244 | static bfd_boolean | |
cec5225b | 7245 | elfNN_aarch64_section_from_shdr (bfd *abfd, |
a06ea964 NC |
7246 | Elf_Internal_Shdr *hdr, |
7247 | const char *name, int shindex) | |
7248 | { | |
7249 | /* There ought to be a place to keep ELF backend specific flags, but | |
7250 | at the moment there isn't one. We just keep track of the | |
7251 | sections by their name, instead. Fortunately, the ABI gives | |
7252 | names for all the AArch64 specific sections, so we will probably get | |
7253 | away with this. */ | |
7254 | switch (hdr->sh_type) | |
7255 | { | |
7256 | case SHT_AARCH64_ATTRIBUTES: | |
7257 | break; | |
7258 | ||
7259 | default: | |
7260 | return FALSE; | |
7261 | } | |
7262 | ||
7263 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
7264 | return FALSE; | |
7265 | ||
7266 | return TRUE; | |
7267 | } | |
7268 | ||
7269 | /* A structure used to record a list of sections, independently | |
7270 | of the next and prev fields in the asection structure. */ | |
7271 | typedef struct section_list | |
7272 | { | |
7273 | asection *sec; | |
7274 | struct section_list *next; | |
7275 | struct section_list *prev; | |
7276 | } | |
7277 | section_list; | |
7278 | ||
7279 | /* Unfortunately we need to keep a list of sections for which | |
7280 | an _aarch64_elf_section_data structure has been allocated. This | |
cec5225b | 7281 | is because it is possible for functions like elfNN_aarch64_write_section |
a06ea964 NC |
7282 | to be called on a section which has had an elf_data_structure |
7283 | allocated for it (and so the used_by_bfd field is valid) but | |
7284 | for which the AArch64 extended version of this structure - the | |
7285 | _aarch64_elf_section_data structure - has not been allocated. */ | |
7286 | static section_list *sections_with_aarch64_elf_section_data = NULL; | |
7287 | ||
7288 | static void | |
7289 | record_section_with_aarch64_elf_section_data (asection *sec) | |
7290 | { | |
7291 | struct section_list *entry; | |
7292 | ||
7293 | entry = bfd_malloc (sizeof (*entry)); | |
7294 | if (entry == NULL) | |
7295 | return; | |
7296 | entry->sec = sec; | |
7297 | entry->next = sections_with_aarch64_elf_section_data; | |
7298 | entry->prev = NULL; | |
7299 | if (entry->next != NULL) | |
7300 | entry->next->prev = entry; | |
7301 | sections_with_aarch64_elf_section_data = entry; | |
7302 | } | |
7303 | ||
7304 | static struct section_list * | |
7305 | find_aarch64_elf_section_entry (asection *sec) | |
7306 | { | |
7307 | struct section_list *entry; | |
7308 | static struct section_list *last_entry = NULL; | |
7309 | ||
7310 | /* This is a short cut for the typical case where the sections are added | |
7311 | to the sections_with_aarch64_elf_section_data list in forward order and | |
7312 | then looked up here in backwards order. This makes a real difference | |
7313 | to the ld-srec/sec64k.exp linker test. */ | |
7314 | entry = sections_with_aarch64_elf_section_data; | |
7315 | if (last_entry != NULL) | |
7316 | { | |
7317 | if (last_entry->sec == sec) | |
7318 | entry = last_entry; | |
7319 | else if (last_entry->next != NULL && last_entry->next->sec == sec) | |
7320 | entry = last_entry->next; | |
7321 | } | |
7322 | ||
7323 | for (; entry; entry = entry->next) | |
7324 | if (entry->sec == sec) | |
7325 | break; | |
7326 | ||
7327 | if (entry) | |
7328 | /* Record the entry prior to this one - it is the entry we are | |
7329 | most likely to want to locate next time. Also this way if we | |
7330 | have been called from | |
7331 | unrecord_section_with_aarch64_elf_section_data () we will not | |
7332 | be caching a pointer that is about to be freed. */ | |
7333 | last_entry = entry->prev; | |
7334 | ||
7335 | return entry; | |
7336 | } | |
7337 | ||
7338 | static void | |
7339 | unrecord_section_with_aarch64_elf_section_data (asection *sec) | |
7340 | { | |
7341 | struct section_list *entry; | |
7342 | ||
7343 | entry = find_aarch64_elf_section_entry (sec); | |
7344 | ||
7345 | if (entry) | |
7346 | { | |
7347 | if (entry->prev != NULL) | |
7348 | entry->prev->next = entry->next; | |
7349 | if (entry->next != NULL) | |
7350 | entry->next->prev = entry->prev; | |
7351 | if (entry == sections_with_aarch64_elf_section_data) | |
7352 | sections_with_aarch64_elf_section_data = entry->next; | |
7353 | free (entry); | |
7354 | } | |
7355 | } | |
7356 | ||
7357 | ||
7358 | typedef struct | |
7359 | { | |
7360 | void *finfo; | |
7361 | struct bfd_link_info *info; | |
7362 | asection *sec; | |
7363 | int sec_shndx; | |
7364 | int (*func) (void *, const char *, Elf_Internal_Sym *, | |
7365 | asection *, struct elf_link_hash_entry *); | |
7366 | } output_arch_syminfo; | |
7367 | ||
7368 | enum map_symbol_type | |
7369 | { | |
7370 | AARCH64_MAP_INSN, | |
7371 | AARCH64_MAP_DATA | |
7372 | }; | |
7373 | ||
7374 | ||
7375 | /* Output a single mapping symbol. */ | |
7376 | ||
7377 | static bfd_boolean | |
cec5225b | 7378 | elfNN_aarch64_output_map_sym (output_arch_syminfo *osi, |
a06ea964 NC |
7379 | enum map_symbol_type type, bfd_vma offset) |
7380 | { | |
7381 | static const char *names[2] = { "$x", "$d" }; | |
7382 | Elf_Internal_Sym sym; | |
7383 | ||
7384 | sym.st_value = (osi->sec->output_section->vma | |
7385 | + osi->sec->output_offset + offset); | |
7386 | sym.st_size = 0; | |
7387 | sym.st_other = 0; | |
7388 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
7389 | sym.st_shndx = osi->sec_shndx; | |
7390 | return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1; | |
7391 | } | |
7392 | ||
a06ea964 NC |
7393 | /* Output a single local symbol for a generated stub. */ |
7394 | ||
7395 | static bfd_boolean | |
cec5225b | 7396 | elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name, |
a06ea964 NC |
7397 | bfd_vma offset, bfd_vma size) |
7398 | { | |
7399 | Elf_Internal_Sym sym; | |
7400 | ||
7401 | sym.st_value = (osi->sec->output_section->vma | |
7402 | + osi->sec->output_offset + offset); | |
7403 | sym.st_size = size; | |
7404 | sym.st_other = 0; | |
7405 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
7406 | sym.st_shndx = osi->sec_shndx; | |
7407 | return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1; | |
7408 | } | |
7409 | ||
7410 | static bfd_boolean | |
7411 | aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) | |
7412 | { | |
cec5225b | 7413 | struct elf_aarch64_stub_hash_entry *stub_entry; |
a06ea964 NC |
7414 | asection *stub_sec; |
7415 | bfd_vma addr; | |
7416 | char *stub_name; | |
7417 | output_arch_syminfo *osi; | |
7418 | ||
7419 | /* Massage our args to the form they really have. */ | |
cec5225b | 7420 | stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry; |
a06ea964 NC |
7421 | osi = (output_arch_syminfo *) in_arg; |
7422 | ||
7423 | stub_sec = stub_entry->stub_sec; | |
7424 | ||
7425 | /* Ensure this stub is attached to the current section being | |
7426 | processed. */ | |
7427 | if (stub_sec != osi->sec) | |
7428 | return TRUE; | |
7429 | ||
7430 | addr = (bfd_vma) stub_entry->stub_offset; | |
7431 | ||
7432 | stub_name = stub_entry->output_name; | |
7433 | ||
7434 | switch (stub_entry->stub_type) | |
7435 | { | |
7436 | case aarch64_stub_adrp_branch: | |
cec5225b | 7437 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, |
a06ea964 NC |
7438 | sizeof (aarch64_adrp_branch_stub))) |
7439 | return FALSE; | |
cec5225b | 7440 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 NC |
7441 | return FALSE; |
7442 | break; | |
7443 | case aarch64_stub_long_branch: | |
cec5225b | 7444 | if (!elfNN_aarch64_output_stub_sym |
a06ea964 NC |
7445 | (osi, stub_name, addr, sizeof (aarch64_long_branch_stub))) |
7446 | return FALSE; | |
cec5225b | 7447 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) |
a06ea964 | 7448 | return FALSE; |
cec5225b | 7449 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16)) |
a06ea964 NC |
7450 | return FALSE; |
7451 | break; | |
68fcca92 JW |
7452 | case aarch64_stub_erratum_835769_veneer: |
7453 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
7454 | sizeof (aarch64_erratum_835769_stub))) | |
7455 | return FALSE; | |
7456 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
7457 | return FALSE; | |
7458 | break; | |
4106101c MS |
7459 | case aarch64_stub_erratum_843419_veneer: |
7460 | if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr, | |
7461 | sizeof (aarch64_erratum_843419_stub))) | |
7462 | return FALSE; | |
7463 | if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr)) | |
7464 | return FALSE; | |
7465 | break; | |
7466 | ||
a06ea964 | 7467 | default: |
8e2fe09f | 7468 | abort (); |
a06ea964 NC |
7469 | } |
7470 | ||
7471 | return TRUE; | |
7472 | } | |
7473 | ||
7474 | /* Output mapping symbols for linker generated sections. */ | |
7475 | ||
7476 | static bfd_boolean | |
cec5225b | 7477 | elfNN_aarch64_output_arch_local_syms (bfd *output_bfd, |
a06ea964 NC |
7478 | struct bfd_link_info *info, |
7479 | void *finfo, | |
7480 | int (*func) (void *, const char *, | |
7481 | Elf_Internal_Sym *, | |
7482 | asection *, | |
7483 | struct elf_link_hash_entry | |
7484 | *)) | |
7485 | { | |
7486 | output_arch_syminfo osi; | |
cec5225b | 7487 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 | 7488 | |
cec5225b | 7489 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
7490 | |
7491 | osi.finfo = finfo; | |
7492 | osi.info = info; | |
7493 | osi.func = func; | |
7494 | ||
7495 | /* Long calls stubs. */ | |
7496 | if (htab->stub_bfd && htab->stub_bfd->sections) | |
7497 | { | |
7498 | asection *stub_sec; | |
7499 | ||
7500 | for (stub_sec = htab->stub_bfd->sections; | |
7501 | stub_sec != NULL; stub_sec = stub_sec->next) | |
7502 | { | |
7503 | /* Ignore non-stub sections. */ | |
7504 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
7505 | continue; | |
7506 | ||
7507 | osi.sec = stub_sec; | |
7508 | ||
7509 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
7510 | (output_bfd, osi.sec->output_section); | |
7511 | ||
61865519 MS |
7512 | /* The first instruction in a stub is always a branch. */ |
7513 | if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0)) | |
7514 | return FALSE; | |
7515 | ||
a06ea964 NC |
7516 | bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub, |
7517 | &osi); | |
7518 | } | |
7519 | } | |
7520 | ||
7521 | /* Finally, output mapping symbols for the PLT. */ | |
7522 | if (!htab->root.splt || htab->root.splt->size == 0) | |
7523 | return TRUE; | |
7524 | ||
a06ea964 NC |
7525 | osi.sec_shndx = _bfd_elf_section_from_bfd_section |
7526 | (output_bfd, htab->root.splt->output_section); | |
7527 | osi.sec = htab->root.splt; | |
7528 | ||
73524045 | 7529 | elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0); |
a06ea964 NC |
7530 | |
7531 | return TRUE; | |
7532 | ||
7533 | } | |
7534 | ||
7535 | /* Allocate target specific section data. */ | |
7536 | ||
7537 | static bfd_boolean | |
cec5225b | 7538 | elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec) |
a06ea964 NC |
7539 | { |
7540 | if (!sec->used_by_bfd) | |
7541 | { | |
7542 | _aarch64_elf_section_data *sdata; | |
7543 | bfd_size_type amt = sizeof (*sdata); | |
7544 | ||
7545 | sdata = bfd_zalloc (abfd, amt); | |
7546 | if (sdata == NULL) | |
7547 | return FALSE; | |
7548 | sec->used_by_bfd = sdata; | |
7549 | } | |
7550 | ||
7551 | record_section_with_aarch64_elf_section_data (sec); | |
7552 | ||
7553 | return _bfd_elf_new_section_hook (abfd, sec); | |
7554 | } | |
7555 | ||
7556 | ||
7557 | static void | |
7558 | unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
7559 | asection *sec, | |
7560 | void *ignore ATTRIBUTE_UNUSED) | |
7561 | { | |
7562 | unrecord_section_with_aarch64_elf_section_data (sec); | |
7563 | } | |
7564 | ||
7565 | static bfd_boolean | |
cec5225b | 7566 | elfNN_aarch64_close_and_cleanup (bfd *abfd) |
a06ea964 NC |
7567 | { |
7568 | if (abfd->sections) | |
7569 | bfd_map_over_sections (abfd, | |
7570 | unrecord_section_via_map_over_sections, NULL); | |
7571 | ||
7572 | return _bfd_elf_close_and_cleanup (abfd); | |
7573 | } | |
7574 | ||
7575 | static bfd_boolean | |
cec5225b | 7576 | elfNN_aarch64_bfd_free_cached_info (bfd *abfd) |
a06ea964 NC |
7577 | { |
7578 | if (abfd->sections) | |
7579 | bfd_map_over_sections (abfd, | |
7580 | unrecord_section_via_map_over_sections, NULL); | |
7581 | ||
7582 | return _bfd_free_cached_info (abfd); | |
7583 | } | |
7584 | ||
a06ea964 NC |
7585 | /* Create dynamic sections. This is different from the ARM backend in that |
7586 | the got, plt, gotplt and their relocation sections are all created in the | |
7587 | standard part of the bfd elf backend. */ | |
7588 | ||
7589 | static bfd_boolean | |
cec5225b | 7590 | elfNN_aarch64_create_dynamic_sections (bfd *dynobj, |
a06ea964 NC |
7591 | struct bfd_link_info *info) |
7592 | { | |
cec5225b | 7593 | struct elf_aarch64_link_hash_table *htab; |
cc0efaa8 MS |
7594 | |
7595 | /* We need to create .got section. */ | |
7596 | if (!aarch64_elf_create_got_section (dynobj, info)) | |
7597 | return FALSE; | |
a06ea964 NC |
7598 | |
7599 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
7600 | return FALSE; | |
7601 | ||
cec5225b | 7602 | htab = elf_aarch64_hash_table (info); |
a06ea964 | 7603 | htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss"); |
0e1862bb | 7604 | if (!bfd_link_pic (info)) |
a06ea964 NC |
7605 | htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss"); |
7606 | ||
0e1862bb | 7607 | if (!htab->sdynbss || (!bfd_link_pic (info) && !htab->srelbss)) |
a06ea964 NC |
7608 | abort (); |
7609 | ||
a06ea964 NC |
7610 | return TRUE; |
7611 | } | |
7612 | ||
7613 | ||
7614 | /* Allocate space in .plt, .got and associated reloc sections for | |
7615 | dynamic relocs. */ | |
7616 | ||
7617 | static bfd_boolean | |
cec5225b | 7618 | elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
a06ea964 NC |
7619 | { |
7620 | struct bfd_link_info *info; | |
cec5225b YZ |
7621 | struct elf_aarch64_link_hash_table *htab; |
7622 | struct elf_aarch64_link_hash_entry *eh; | |
a06ea964 NC |
7623 | struct elf_dyn_relocs *p; |
7624 | ||
7625 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
7626 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
7627 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
7628 | ||
7629 | There is no need to process bfd_link_hash_indirect symbols here | |
7630 | because we will also be presented with the concrete instance of | |
cec5225b | 7631 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been |
a06ea964 NC |
7632 | called to copy all relevant data from the generic to the concrete |
7633 | symbol instance. | |
7634 | */ | |
7635 | if (h->root.type == bfd_link_hash_indirect) | |
7636 | return TRUE; | |
7637 | ||
7638 | if (h->root.type == bfd_link_hash_warning) | |
7639 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7640 | ||
7641 | info = (struct bfd_link_info *) inf; | |
cec5225b | 7642 | htab = elf_aarch64_hash_table (info); |
a06ea964 | 7643 | |
1419bbe5 WN |
7644 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
7645 | here if it is defined and referenced in a non-shared object. */ | |
7646 | if (h->type == STT_GNU_IFUNC | |
7647 | && h->def_regular) | |
7648 | return TRUE; | |
7649 | else if (htab->root.dynamic_sections_created && h->plt.refcount > 0) | |
a06ea964 NC |
7650 | { |
7651 | /* Make sure this symbol is output as a dynamic symbol. | |
7652 | Undefined weak syms won't yet be marked as dynamic. */ | |
7653 | if (h->dynindx == -1 && !h->forced_local) | |
7654 | { | |
7655 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
7656 | return FALSE; | |
7657 | } | |
7658 | ||
0e1862bb | 7659 | if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
a06ea964 NC |
7660 | { |
7661 | asection *s = htab->root.splt; | |
7662 | ||
7663 | /* If this is the first .plt entry, make room for the special | |
7664 | first entry. */ | |
7665 | if (s->size == 0) | |
7666 | s->size += htab->plt_header_size; | |
7667 | ||
7668 | h->plt.offset = s->size; | |
7669 | ||
7670 | /* If this symbol is not defined in a regular file, and we are | |
7671 | not generating a shared library, then set the symbol to this | |
7672 | location in the .plt. This is required to make function | |
7673 | pointers compare as equal between the normal executable and | |
7674 | the shared library. */ | |
0e1862bb | 7675 | if (!bfd_link_pic (info) && !h->def_regular) |
a06ea964 NC |
7676 | { |
7677 | h->root.u.def.section = s; | |
7678 | h->root.u.def.value = h->plt.offset; | |
7679 | } | |
7680 | ||
7681 | /* Make room for this entry. For now we only create the | |
7682 | small model PLT entries. We later need to find a way | |
7683 | of relaxing into these from the large model PLT entries. */ | |
7684 | s->size += PLT_SMALL_ENTRY_SIZE; | |
7685 | ||
7686 | /* We also need to make an entry in the .got.plt section, which | |
7687 | will be placed in the .got section by the linker script. */ | |
7688 | htab->root.sgotplt->size += GOT_ENTRY_SIZE; | |
7689 | ||
7690 | /* We also need to make an entry in the .rela.plt section. */ | |
7691 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
7692 | ||
7693 | /* We need to ensure that all GOT entries that serve the PLT | |
7694 | are consecutive with the special GOT slots [0] [1] and | |
7695 | [2]. Any addtional relocations, such as | |
7696 | R_AARCH64_TLSDESC, must be placed after the PLT related | |
7697 | entries. We abuse the reloc_count such that during | |
7698 | sizing we adjust reloc_count to indicate the number of | |
7699 | PLT related reserved entries. In subsequent phases when | |
7700 | filling in the contents of the reloc entries, PLT related | |
7701 | entries are placed by computing their PLT index (0 | |
7702 | .. reloc_count). While other none PLT relocs are placed | |
7703 | at the slot indicated by reloc_count and reloc_count is | |
7704 | updated. */ | |
7705 | ||
7706 | htab->root.srelplt->reloc_count++; | |
7707 | } | |
7708 | else | |
7709 | { | |
7710 | h->plt.offset = (bfd_vma) - 1; | |
7711 | h->needs_plt = 0; | |
7712 | } | |
7713 | } | |
7714 | else | |
7715 | { | |
7716 | h->plt.offset = (bfd_vma) - 1; | |
7717 | h->needs_plt = 0; | |
7718 | } | |
7719 | ||
cec5225b | 7720 | eh = (struct elf_aarch64_link_hash_entry *) h; |
a06ea964 NC |
7721 | eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1; |
7722 | ||
7723 | if (h->got.refcount > 0) | |
7724 | { | |
7725 | bfd_boolean dyn; | |
cec5225b | 7726 | unsigned got_type = elf_aarch64_hash_entry (h)->got_type; |
a06ea964 NC |
7727 | |
7728 | h->got.offset = (bfd_vma) - 1; | |
7729 | ||
7730 | dyn = htab->root.dynamic_sections_created; | |
7731 | ||
7732 | /* Make sure this symbol is output as a dynamic symbol. | |
7733 | Undefined weak syms won't yet be marked as dynamic. */ | |
7734 | if (dyn && h->dynindx == -1 && !h->forced_local) | |
7735 | { | |
7736 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
7737 | return FALSE; | |
7738 | } | |
7739 | ||
7740 | if (got_type == GOT_UNKNOWN) | |
7741 | { | |
7742 | } | |
7743 | else if (got_type == GOT_NORMAL) | |
7744 | { | |
7745 | h->got.offset = htab->root.sgot->size; | |
7746 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
7747 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7748 | || h->root.type != bfd_link_hash_undefweak) | |
0e1862bb | 7749 | && (bfd_link_pic (info) |
a06ea964 NC |
7750 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) |
7751 | { | |
7752 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
7753 | } | |
7754 | } | |
7755 | else | |
7756 | { | |
7757 | int indx; | |
7758 | if (got_type & GOT_TLSDESC_GD) | |
7759 | { | |
7760 | eh->tlsdesc_got_jump_table_offset = | |
7761 | (htab->root.sgotplt->size | |
7762 | - aarch64_compute_jump_table_size (htab)); | |
7763 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
7764 | h->got.offset = (bfd_vma) - 2; | |
7765 | } | |
7766 | ||
7767 | if (got_type & GOT_TLS_GD) | |
7768 | { | |
7769 | h->got.offset = htab->root.sgot->size; | |
7770 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
7771 | } | |
7772 | ||
7773 | if (got_type & GOT_TLS_IE) | |
7774 | { | |
7775 | h->got.offset = htab->root.sgot->size; | |
7776 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
7777 | } | |
7778 | ||
7779 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
7780 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7781 | || h->root.type != bfd_link_hash_undefweak) | |
0e1862bb | 7782 | && (bfd_link_pic (info) |
a06ea964 NC |
7783 | || indx != 0 |
7784 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
7785 | { | |
7786 | if (got_type & GOT_TLSDESC_GD) | |
7787 | { | |
7788 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
7789 | /* Note reloc_count not incremented here! We have | |
7790 | already adjusted reloc_count for this relocation | |
7791 | type. */ | |
7792 | ||
7793 | /* TLSDESC PLT is now needed, but not yet determined. */ | |
7794 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
7795 | } | |
7796 | ||
7797 | if (got_type & GOT_TLS_GD) | |
7798 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
7799 | ||
7800 | if (got_type & GOT_TLS_IE) | |
7801 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
7802 | } | |
7803 | } | |
7804 | } | |
7805 | else | |
7806 | { | |
7807 | h->got.offset = (bfd_vma) - 1; | |
7808 | } | |
7809 | ||
7810 | if (eh->dyn_relocs == NULL) | |
7811 | return TRUE; | |
7812 | ||
7813 | /* In the shared -Bsymbolic case, discard space allocated for | |
7814 | dynamic pc-relative relocs against symbols which turn out to be | |
7815 | defined in regular objects. For the normal shared case, discard | |
7816 | space for pc-relative relocs that have become local due to symbol | |
7817 | visibility changes. */ | |
7818 | ||
0e1862bb | 7819 | if (bfd_link_pic (info)) |
a06ea964 NC |
7820 | { |
7821 | /* Relocs that use pc_count are those that appear on a call | |
7822 | insn, or certain REL relocs that can generated via assembly. | |
7823 | We want calls to protected symbols to resolve directly to the | |
7824 | function rather than going via the plt. If people want | |
7825 | function pointer comparisons to work as expected then they | |
7826 | should avoid writing weird assembly. */ | |
7827 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
7828 | { | |
7829 | struct elf_dyn_relocs **pp; | |
7830 | ||
7831 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) | |
7832 | { | |
7833 | p->count -= p->pc_count; | |
7834 | p->pc_count = 0; | |
7835 | if (p->count == 0) | |
7836 | *pp = p->next; | |
7837 | else | |
7838 | pp = &p->next; | |
7839 | } | |
7840 | } | |
7841 | ||
7842 | /* Also discard relocs on undefined weak syms with non-default | |
7843 | visibility. */ | |
7844 | if (eh->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak) | |
7845 | { | |
7846 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
7847 | eh->dyn_relocs = NULL; | |
7848 | ||
7849 | /* Make sure undefined weak symbols are output as a dynamic | |
7850 | symbol in PIEs. */ | |
7851 | else if (h->dynindx == -1 | |
7852 | && !h->forced_local | |
7853 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
7854 | return FALSE; | |
7855 | } | |
7856 | ||
7857 | } | |
7858 | else if (ELIMINATE_COPY_RELOCS) | |
7859 | { | |
7860 | /* For the non-shared case, discard space for relocs against | |
7861 | symbols which turn out to need copy relocs or are not | |
7862 | dynamic. */ | |
7863 | ||
7864 | if (!h->non_got_ref | |
7865 | && ((h->def_dynamic | |
7866 | && !h->def_regular) | |
7867 | || (htab->root.dynamic_sections_created | |
7868 | && (h->root.type == bfd_link_hash_undefweak | |
7869 | || h->root.type == bfd_link_hash_undefined)))) | |
7870 | { | |
7871 | /* Make sure this symbol is output as a dynamic symbol. | |
7872 | Undefined weak syms won't yet be marked as dynamic. */ | |
7873 | if (h->dynindx == -1 | |
7874 | && !h->forced_local | |
7875 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
7876 | return FALSE; | |
7877 | ||
7878 | /* If that succeeded, we know we'll be keeping all the | |
7879 | relocs. */ | |
7880 | if (h->dynindx != -1) | |
7881 | goto keep; | |
7882 | } | |
7883 | ||
7884 | eh->dyn_relocs = NULL; | |
7885 | ||
7886 | keep:; | |
7887 | } | |
7888 | ||
7889 | /* Finally, allocate space. */ | |
7890 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7891 | { | |
7892 | asection *sreloc; | |
7893 | ||
7894 | sreloc = elf_section_data (p->sec)->sreloc; | |
7895 | ||
7896 | BFD_ASSERT (sreloc != NULL); | |
7897 | ||
7898 | sreloc->size += p->count * RELOC_SIZE (htab); | |
7899 | } | |
7900 | ||
7901 | return TRUE; | |
7902 | } | |
7903 | ||
1419bbe5 WN |
7904 | /* Allocate space in .plt, .got and associated reloc sections for |
7905 | ifunc dynamic relocs. */ | |
7906 | ||
7907 | static bfd_boolean | |
7908 | elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h, | |
7909 | void *inf) | |
7910 | { | |
7911 | struct bfd_link_info *info; | |
7912 | struct elf_aarch64_link_hash_table *htab; | |
7913 | struct elf_aarch64_link_hash_entry *eh; | |
7914 | ||
7915 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
7916 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
7917 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
7918 | ||
7919 | There is no need to process bfd_link_hash_indirect symbols here | |
7920 | because we will also be presented with the concrete instance of | |
7921 | the symbol and elfNN_aarch64_copy_indirect_symbol () will have been | |
7922 | called to copy all relevant data from the generic to the concrete | |
7923 | symbol instance. | |
7924 | */ | |
7925 | if (h->root.type == bfd_link_hash_indirect) | |
7926 | return TRUE; | |
7927 | ||
7928 | if (h->root.type == bfd_link_hash_warning) | |
7929 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7930 | ||
7931 | info = (struct bfd_link_info *) inf; | |
7932 | htab = elf_aarch64_hash_table (info); | |
7933 | ||
7934 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
7935 | ||
7936 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it | |
7937 | here if it is defined and referenced in a non-shared object. */ | |
7938 | if (h->type == STT_GNU_IFUNC | |
7939 | && h->def_regular) | |
7940 | return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, | |
7941 | &eh->dyn_relocs, | |
7942 | htab->plt_entry_size, | |
7943 | htab->plt_header_size, | |
7944 | GOT_ENTRY_SIZE); | |
7945 | return TRUE; | |
7946 | } | |
7947 | ||
7948 | /* Allocate space in .plt, .got and associated reloc sections for | |
7949 | local dynamic relocs. */ | |
7950 | ||
7951 | static bfd_boolean | |
7952 | elfNN_aarch64_allocate_local_dynrelocs (void **slot, void *inf) | |
7953 | { | |
7954 | struct elf_link_hash_entry *h | |
7955 | = (struct elf_link_hash_entry *) *slot; | |
7956 | ||
7957 | if (h->type != STT_GNU_IFUNC | |
7958 | || !h->def_regular | |
7959 | || !h->ref_regular | |
7960 | || !h->forced_local | |
7961 | || h->root.type != bfd_link_hash_defined) | |
7962 | abort (); | |
7963 | ||
7964 | return elfNN_aarch64_allocate_dynrelocs (h, inf); | |
7965 | } | |
7966 | ||
7967 | /* Allocate space in .plt, .got and associated reloc sections for | |
7968 | local ifunc dynamic relocs. */ | |
7969 | ||
7970 | static bfd_boolean | |
7971 | elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf) | |
7972 | { | |
7973 | struct elf_link_hash_entry *h | |
7974 | = (struct elf_link_hash_entry *) *slot; | |
7975 | ||
7976 | if (h->type != STT_GNU_IFUNC | |
7977 | || !h->def_regular | |
7978 | || !h->ref_regular | |
7979 | || !h->forced_local | |
7980 | || h->root.type != bfd_link_hash_defined) | |
7981 | abort (); | |
7982 | ||
7983 | return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf); | |
7984 | } | |
a06ea964 | 7985 | |
c2170589 JW |
7986 | /* Find any dynamic relocs that apply to read-only sections. */ |
7987 | ||
7988 | static bfd_boolean | |
7989 | aarch64_readonly_dynrelocs (struct elf_link_hash_entry * h, void * inf) | |
7990 | { | |
7991 | struct elf_aarch64_link_hash_entry * eh; | |
7992 | struct elf_dyn_relocs * p; | |
7993 | ||
7994 | eh = (struct elf_aarch64_link_hash_entry *) h; | |
7995 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7996 | { | |
7997 | asection *s = p->sec; | |
7998 | ||
7999 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
8000 | { | |
8001 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
8002 | ||
8003 | info->flags |= DF_TEXTREL; | |
8004 | ||
8005 | /* Not an error, just cut short the traversal. */ | |
8006 | return FALSE; | |
8007 | } | |
8008 | } | |
8009 | return TRUE; | |
8010 | } | |
8011 | ||
a06ea964 NC |
8012 | /* This is the most important function of all . Innocuosly named |
8013 | though ! */ | |
8014 | static bfd_boolean | |
cec5225b | 8015 | elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
a06ea964 NC |
8016 | struct bfd_link_info *info) |
8017 | { | |
cec5225b | 8018 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
8019 | bfd *dynobj; |
8020 | asection *s; | |
8021 | bfd_boolean relocs; | |
8022 | bfd *ibfd; | |
8023 | ||
cec5225b | 8024 | htab = elf_aarch64_hash_table ((info)); |
a06ea964 NC |
8025 | dynobj = htab->root.dynobj; |
8026 | ||
8027 | BFD_ASSERT (dynobj != NULL); | |
8028 | ||
8029 | if (htab->root.dynamic_sections_created) | |
8030 | { | |
9b8b325a | 8031 | if (bfd_link_executable (info) && !info->nointerp) |
a06ea964 NC |
8032 | { |
8033 | s = bfd_get_linker_section (dynobj, ".interp"); | |
8034 | if (s == NULL) | |
8035 | abort (); | |
8036 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
8037 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
8038 | } | |
8039 | } | |
8040 | ||
8041 | /* Set up .got offsets for local syms, and space for local dynamic | |
8042 | relocs. */ | |
c72f2fb2 | 8043 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
a06ea964 NC |
8044 | { |
8045 | struct elf_aarch64_local_symbol *locals = NULL; | |
8046 | Elf_Internal_Shdr *symtab_hdr; | |
8047 | asection *srel; | |
8048 | unsigned int i; | |
8049 | ||
8050 | if (!is_aarch64_elf (ibfd)) | |
8051 | continue; | |
8052 | ||
8053 | for (s = ibfd->sections; s != NULL; s = s->next) | |
8054 | { | |
8055 | struct elf_dyn_relocs *p; | |
8056 | ||
8057 | for (p = (struct elf_dyn_relocs *) | |
8058 | (elf_section_data (s)->local_dynrel); p != NULL; p = p->next) | |
8059 | { | |
8060 | if (!bfd_is_abs_section (p->sec) | |
8061 | && bfd_is_abs_section (p->sec->output_section)) | |
8062 | { | |
8063 | /* Input section has been discarded, either because | |
8064 | it is a copy of a linkonce section or due to | |
8065 | linker script /DISCARD/, so we'll be discarding | |
8066 | the relocs too. */ | |
8067 | } | |
8068 | else if (p->count != 0) | |
8069 | { | |
8070 | srel = elf_section_data (p->sec)->sreloc; | |
8071 | srel->size += p->count * RELOC_SIZE (htab); | |
8072 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
8073 | info->flags |= DF_TEXTREL; | |
8074 | } | |
8075 | } | |
8076 | } | |
8077 | ||
cec5225b | 8078 | locals = elf_aarch64_locals (ibfd); |
a06ea964 NC |
8079 | if (!locals) |
8080 | continue; | |
8081 | ||
8082 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
8083 | srel = htab->root.srelgot; | |
8084 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
8085 | { | |
8086 | locals[i].got_offset = (bfd_vma) - 1; | |
8087 | locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1; | |
8088 | if (locals[i].got_refcount > 0) | |
8089 | { | |
8090 | unsigned got_type = locals[i].got_type; | |
8091 | if (got_type & GOT_TLSDESC_GD) | |
8092 | { | |
8093 | locals[i].tlsdesc_got_jump_table_offset = | |
8094 | (htab->root.sgotplt->size | |
8095 | - aarch64_compute_jump_table_size (htab)); | |
8096 | htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2; | |
8097 | locals[i].got_offset = (bfd_vma) - 2; | |
8098 | } | |
8099 | ||
8100 | if (got_type & GOT_TLS_GD) | |
8101 | { | |
8102 | locals[i].got_offset = htab->root.sgot->size; | |
8103 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
8104 | } | |
8105 | ||
b53b1bed JW |
8106 | if (got_type & GOT_TLS_IE |
8107 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
8108 | { |
8109 | locals[i].got_offset = htab->root.sgot->size; | |
8110 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8111 | } | |
8112 | ||
8113 | if (got_type == GOT_UNKNOWN) | |
8114 | { | |
8115 | } | |
8116 | ||
0e1862bb | 8117 | if (bfd_link_pic (info)) |
a06ea964 NC |
8118 | { |
8119 | if (got_type & GOT_TLSDESC_GD) | |
8120 | { | |
8121 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
8122 | /* Note RELOC_COUNT not incremented here! */ | |
8123 | htab->tlsdesc_plt = (bfd_vma) - 1; | |
8124 | } | |
8125 | ||
8126 | if (got_type & GOT_TLS_GD) | |
8127 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
8128 | ||
b53b1bed JW |
8129 | if (got_type & GOT_TLS_IE |
8130 | || got_type & GOT_NORMAL) | |
a06ea964 NC |
8131 | htab->root.srelgot->size += RELOC_SIZE (htab); |
8132 | } | |
8133 | } | |
8134 | else | |
8135 | { | |
8136 | locals[i].got_refcount = (bfd_vma) - 1; | |
8137 | } | |
8138 | } | |
8139 | } | |
8140 | ||
8141 | ||
8142 | /* Allocate global sym .plt and .got entries, and space for global | |
8143 | sym dynamic relocs. */ | |
cec5225b | 8144 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs, |
a06ea964 NC |
8145 | info); |
8146 | ||
1419bbe5 WN |
8147 | /* Allocate global ifunc sym .plt and .got entries, and space for global |
8148 | ifunc sym dynamic relocs. */ | |
8149 | elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs, | |
8150 | info); | |
8151 | ||
8152 | /* Allocate .plt and .got entries, and space for local symbols. */ | |
8153 | htab_traverse (htab->loc_hash_table, | |
8154 | elfNN_aarch64_allocate_local_dynrelocs, | |
8155 | info); | |
8156 | ||
8157 | /* Allocate .plt and .got entries, and space for local ifunc symbols. */ | |
8158 | htab_traverse (htab->loc_hash_table, | |
8159 | elfNN_aarch64_allocate_local_ifunc_dynrelocs, | |
8160 | info); | |
a06ea964 NC |
8161 | |
8162 | /* For every jump slot reserved in the sgotplt, reloc_count is | |
8163 | incremented. However, when we reserve space for TLS descriptors, | |
8164 | it's not incremented, so in order to compute the space reserved | |
8165 | for them, it suffices to multiply the reloc count by the jump | |
8166 | slot size. */ | |
8167 | ||
8168 | if (htab->root.srelplt) | |
8847944f | 8169 | htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab); |
a06ea964 NC |
8170 | |
8171 | if (htab->tlsdesc_plt) | |
8172 | { | |
8173 | if (htab->root.splt->size == 0) | |
8174 | htab->root.splt->size += PLT_ENTRY_SIZE; | |
8175 | ||
8176 | htab->tlsdesc_plt = htab->root.splt->size; | |
8177 | htab->root.splt->size += PLT_TLSDESC_ENTRY_SIZE; | |
8178 | ||
8179 | /* If we're not using lazy TLS relocations, don't generate the | |
8180 | GOT entry required. */ | |
8181 | if (!(info->flags & DF_BIND_NOW)) | |
8182 | { | |
8183 | htab->dt_tlsdesc_got = htab->root.sgot->size; | |
8184 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
8185 | } | |
8186 | } | |
8187 | ||
68fcca92 | 8188 | /* Init mapping symbols information to use later to distingush between |
4106101c MS |
8189 | code and data while scanning for errata. */ |
8190 | if (htab->fix_erratum_835769 || htab->fix_erratum_843419) | |
68fcca92 JW |
8191 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
8192 | { | |
8193 | if (!is_aarch64_elf (ibfd)) | |
8194 | continue; | |
8195 | bfd_elfNN_aarch64_init_maps (ibfd); | |
8196 | } | |
8197 | ||
a06ea964 NC |
8198 | /* We now have determined the sizes of the various dynamic sections. |
8199 | Allocate memory for them. */ | |
8200 | relocs = FALSE; | |
8201 | for (s = dynobj->sections; s != NULL; s = s->next) | |
8202 | { | |
8203 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
8204 | continue; | |
8205 | ||
8206 | if (s == htab->root.splt | |
8207 | || s == htab->root.sgot | |
8208 | || s == htab->root.sgotplt | |
8209 | || s == htab->root.iplt | |
8210 | || s == htab->root.igotplt || s == htab->sdynbss) | |
8211 | { | |
8212 | /* Strip this section if we don't need it; see the | |
8213 | comment below. */ | |
8214 | } | |
8215 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) | |
8216 | { | |
8217 | if (s->size != 0 && s != htab->root.srelplt) | |
8218 | relocs = TRUE; | |
8219 | ||
8220 | /* We use the reloc_count field as a counter if we need | |
8221 | to copy relocs into the output file. */ | |
8222 | if (s != htab->root.srelplt) | |
8223 | s->reloc_count = 0; | |
8224 | } | |
8225 | else | |
8226 | { | |
8227 | /* It's not one of our sections, so don't allocate space. */ | |
8228 | continue; | |
8229 | } | |
8230 | ||
8231 | if (s->size == 0) | |
8232 | { | |
8233 | /* If we don't need this section, strip it from the | |
8234 | output file. This is mostly to handle .rela.bss and | |
8235 | .rela.plt. We must create both sections in | |
8236 | create_dynamic_sections, because they must be created | |
8237 | before the linker maps input sections to output | |
8238 | sections. The linker does that before | |
8239 | adjust_dynamic_symbol is called, and it is that | |
8240 | function which decides whether anything needs to go | |
8241 | into these sections. */ | |
8242 | ||
8243 | s->flags |= SEC_EXCLUDE; | |
8244 | continue; | |
8245 | } | |
8246 | ||
8247 | if ((s->flags & SEC_HAS_CONTENTS) == 0) | |
8248 | continue; | |
8249 | ||
8250 | /* Allocate memory for the section contents. We use bfd_zalloc | |
8251 | here in case unused entries are not reclaimed before the | |
8252 | section's contents are written out. This should not happen, | |
8253 | but this way if it does, we get a R_AARCH64_NONE reloc instead | |
8254 | of garbage. */ | |
8255 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
8256 | if (s->contents == NULL) | |
8257 | return FALSE; | |
8258 | } | |
8259 | ||
8260 | if (htab->root.dynamic_sections_created) | |
8261 | { | |
8262 | /* Add some entries to the .dynamic section. We fill in the | |
cec5225b | 8263 | values later, in elfNN_aarch64_finish_dynamic_sections, but we |
a06ea964 NC |
8264 | must add the entries now so that we get the correct size for |
8265 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
8266 | dynamic linker and used by the debugger. */ | |
8267 | #define add_dynamic_entry(TAG, VAL) \ | |
8268 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
8269 | ||
0e1862bb | 8270 | if (bfd_link_executable (info)) |
a06ea964 NC |
8271 | { |
8272 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
8273 | return FALSE; | |
8274 | } | |
8275 | ||
8276 | if (htab->root.splt->size != 0) | |
8277 | { | |
8278 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
8279 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
8280 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
8281 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
8282 | return FALSE; | |
8283 | ||
8284 | if (htab->tlsdesc_plt | |
8285 | && (!add_dynamic_entry (DT_TLSDESC_PLT, 0) | |
8286 | || !add_dynamic_entry (DT_TLSDESC_GOT, 0))) | |
8287 | return FALSE; | |
8288 | } | |
8289 | ||
8290 | if (relocs) | |
8291 | { | |
8292 | if (!add_dynamic_entry (DT_RELA, 0) | |
8293 | || !add_dynamic_entry (DT_RELASZ, 0) | |
8294 | || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) | |
8295 | return FALSE; | |
8296 | ||
8297 | /* If any dynamic relocs apply to a read-only section, | |
8298 | then we need a DT_TEXTREL entry. */ | |
c2170589 JW |
8299 | if ((info->flags & DF_TEXTREL) == 0) |
8300 | elf_link_hash_traverse (& htab->root, aarch64_readonly_dynrelocs, | |
8301 | info); | |
8302 | ||
a06ea964 NC |
8303 | if ((info->flags & DF_TEXTREL) != 0) |
8304 | { | |
8305 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
8306 | return FALSE; | |
8307 | } | |
8308 | } | |
8309 | } | |
8310 | #undef add_dynamic_entry | |
8311 | ||
8312 | return TRUE; | |
a06ea964 NC |
8313 | } |
8314 | ||
8315 | static inline void | |
caed7120 YZ |
8316 | elf_aarch64_update_plt_entry (bfd *output_bfd, |
8317 | bfd_reloc_code_real_type r_type, | |
8318 | bfd_byte *plt_entry, bfd_vma value) | |
a06ea964 | 8319 | { |
caed7120 YZ |
8320 | reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type); |
8321 | ||
8322 | _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value); | |
a06ea964 NC |
8323 | } |
8324 | ||
8325 | static void | |
cec5225b YZ |
8326 | elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h, |
8327 | struct elf_aarch64_link_hash_table | |
1419bbe5 WN |
8328 | *htab, bfd *output_bfd, |
8329 | struct bfd_link_info *info) | |
a06ea964 NC |
8330 | { |
8331 | bfd_byte *plt_entry; | |
8332 | bfd_vma plt_index; | |
8333 | bfd_vma got_offset; | |
8334 | bfd_vma gotplt_entry_address; | |
8335 | bfd_vma plt_entry_address; | |
8336 | Elf_Internal_Rela rela; | |
8337 | bfd_byte *loc; | |
1419bbe5 WN |
8338 | asection *plt, *gotplt, *relplt; |
8339 | ||
8340 | /* When building a static executable, use .iplt, .igot.plt and | |
8341 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
8342 | if (htab->root.splt != NULL) | |
8343 | { | |
8344 | plt = htab->root.splt; | |
8345 | gotplt = htab->root.sgotplt; | |
8346 | relplt = htab->root.srelplt; | |
8347 | } | |
8348 | else | |
8349 | { | |
8350 | plt = htab->root.iplt; | |
8351 | gotplt = htab->root.igotplt; | |
8352 | relplt = htab->root.irelplt; | |
8353 | } | |
8354 | ||
8355 | /* Get the index in the procedure linkage table which | |
8356 | corresponds to this symbol. This is the index of this symbol | |
8357 | in all the symbols for which we are making plt entries. The | |
8358 | first entry in the procedure linkage table is reserved. | |
a06ea964 | 8359 | |
1419bbe5 WN |
8360 | Get the offset into the .got table of the entry that |
8361 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE | |
8362 | bytes. The first three are reserved for the dynamic linker. | |
692e2b8b | 8363 | |
1419bbe5 WN |
8364 | For static executables, we don't reserve anything. */ |
8365 | ||
8366 | if (plt == htab->root.splt) | |
8367 | { | |
8368 | plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size; | |
8369 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
8370 | } | |
8371 | else | |
8372 | { | |
8373 | plt_index = h->plt.offset / htab->plt_entry_size; | |
8374 | got_offset = plt_index * GOT_ENTRY_SIZE; | |
8375 | } | |
8376 | ||
8377 | plt_entry = plt->contents + h->plt.offset; | |
8378 | plt_entry_address = plt->output_section->vma | |
f44a1f8e | 8379 | + plt->output_offset + h->plt.offset; |
1419bbe5 WN |
8380 | gotplt_entry_address = gotplt->output_section->vma + |
8381 | gotplt->output_offset + got_offset; | |
a06ea964 NC |
8382 | |
8383 | /* Copy in the boiler-plate for the PLTn entry. */ | |
cec5225b | 8384 | memcpy (plt_entry, elfNN_aarch64_small_plt_entry, PLT_SMALL_ENTRY_SIZE); |
a06ea964 NC |
8385 | |
8386 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
8387 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 YZ |
8388 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
8389 | plt_entry, | |
8390 | PG (gotplt_entry_address) - | |
8391 | PG (plt_entry_address)); | |
a06ea964 NC |
8392 | |
8393 | /* Fill in the lo12 bits for the load from the pltgot. */ | |
caed7120 YZ |
8394 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
8395 | plt_entry + 4, | |
8396 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 | 8397 | |
9aff4b7a | 8398 | /* Fill in the lo12 bits for the add from the pltgot entry. */ |
caed7120 YZ |
8399 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
8400 | plt_entry + 8, | |
8401 | PG_OFFSET (gotplt_entry_address)); | |
a06ea964 NC |
8402 | |
8403 | /* All the GOTPLT Entries are essentially initialized to PLT0. */ | |
cec5225b | 8404 | bfd_put_NN (output_bfd, |
1419bbe5 WN |
8405 | plt->output_section->vma + plt->output_offset, |
8406 | gotplt->contents + got_offset); | |
a06ea964 | 8407 | |
a06ea964 | 8408 | rela.r_offset = gotplt_entry_address; |
1419bbe5 WN |
8409 | |
8410 | if (h->dynindx == -1 | |
0e1862bb | 8411 | || ((bfd_link_executable (info) |
1419bbe5 WN |
8412 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
8413 | && h->def_regular | |
8414 | && h->type == STT_GNU_IFUNC)) | |
8415 | { | |
8416 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
8417 | R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */ | |
8418 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE)); | |
8419 | rela.r_addend = (h->root.u.def.value | |
8420 | + h->root.u.def.section->output_section->vma | |
8421 | + h->root.u.def.section->output_offset); | |
8422 | } | |
8423 | else | |
8424 | { | |
8425 | /* Fill in the entry in the .rela.plt section. */ | |
8426 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT)); | |
8427 | rela.r_addend = 0; | |
8428 | } | |
a06ea964 NC |
8429 | |
8430 | /* Compute the relocation entry to used based on PLT index and do | |
8431 | not adjust reloc_count. The reloc_count has already been adjusted | |
8432 | to account for this entry. */ | |
1419bbe5 | 8433 | loc = relplt->contents + plt_index * RELOC_SIZE (htab); |
cec5225b | 8434 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
8435 | } |
8436 | ||
8437 | /* Size sections even though they're not dynamic. We use it to setup | |
8438 | _TLS_MODULE_BASE_, if needed. */ | |
8439 | ||
8440 | static bfd_boolean | |
cec5225b | 8441 | elfNN_aarch64_always_size_sections (bfd *output_bfd, |
a06ea964 NC |
8442 | struct bfd_link_info *info) |
8443 | { | |
8444 | asection *tls_sec; | |
8445 | ||
0e1862bb | 8446 | if (bfd_link_relocatable (info)) |
a06ea964 NC |
8447 | return TRUE; |
8448 | ||
8449 | tls_sec = elf_hash_table (info)->tls_sec; | |
8450 | ||
8451 | if (tls_sec) | |
8452 | { | |
8453 | struct elf_link_hash_entry *tlsbase; | |
8454 | ||
8455 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
8456 | "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE); | |
8457 | ||
8458 | if (tlsbase) | |
8459 | { | |
8460 | struct bfd_link_hash_entry *h = NULL; | |
8461 | const struct elf_backend_data *bed = | |
8462 | get_elf_backend_data (output_bfd); | |
8463 | ||
8464 | if (!(_bfd_generic_link_add_one_symbol | |
8465 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
8466 | tls_sec, 0, NULL, FALSE, bed->collect, &h))) | |
8467 | return FALSE; | |
8468 | ||
8469 | tlsbase->type = STT_TLS; | |
8470 | tlsbase = (struct elf_link_hash_entry *) h; | |
8471 | tlsbase->def_regular = 1; | |
8472 | tlsbase->other = STV_HIDDEN; | |
8473 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
8474 | } | |
8475 | } | |
8476 | ||
8477 | return TRUE; | |
8478 | } | |
8479 | ||
8480 | /* Finish up dynamic symbol handling. We set the contents of various | |
8481 | dynamic sections here. */ | |
8482 | static bfd_boolean | |
cec5225b | 8483 | elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd, |
a06ea964 NC |
8484 | struct bfd_link_info *info, |
8485 | struct elf_link_hash_entry *h, | |
8486 | Elf_Internal_Sym *sym) | |
8487 | { | |
cec5225b YZ |
8488 | struct elf_aarch64_link_hash_table *htab; |
8489 | htab = elf_aarch64_hash_table (info); | |
a06ea964 NC |
8490 | |
8491 | if (h->plt.offset != (bfd_vma) - 1) | |
8492 | { | |
1419bbe5 WN |
8493 | asection *plt, *gotplt, *relplt; |
8494 | ||
a06ea964 NC |
8495 | /* This symbol has an entry in the procedure linkage table. Set |
8496 | it up. */ | |
8497 | ||
1419bbe5 WN |
8498 | /* When building a static executable, use .iplt, .igot.plt and |
8499 | .rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
8500 | if (htab->root.splt != NULL) | |
8501 | { | |
8502 | plt = htab->root.splt; | |
8503 | gotplt = htab->root.sgotplt; | |
8504 | relplt = htab->root.srelplt; | |
8505 | } | |
8506 | else | |
8507 | { | |
8508 | plt = htab->root.iplt; | |
8509 | gotplt = htab->root.igotplt; | |
8510 | relplt = htab->root.irelplt; | |
8511 | } | |
8512 | ||
8513 | /* This symbol has an entry in the procedure linkage table. Set | |
8514 | it up. */ | |
8515 | if ((h->dynindx == -1 | |
0e1862bb | 8516 | && !((h->forced_local || bfd_link_executable (info)) |
1419bbe5 WN |
8517 | && h->def_regular |
8518 | && h->type == STT_GNU_IFUNC)) | |
8519 | || plt == NULL | |
8520 | || gotplt == NULL | |
8521 | || relplt == NULL) | |
a06ea964 NC |
8522 | abort (); |
8523 | ||
1419bbe5 | 8524 | elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info); |
a06ea964 NC |
8525 | if (!h->def_regular) |
8526 | { | |
8527 | /* Mark the symbol as undefined, rather than as defined in | |
46b87d49 | 8528 | the .plt section. */ |
a06ea964 | 8529 | sym->st_shndx = SHN_UNDEF; |
46b87d49 WN |
8530 | /* If the symbol is weak we need to clear the value. |
8531 | Otherwise, the PLT entry would provide a definition for | |
8532 | the symbol even if the symbol wasn't defined anywhere, | |
8533 | and so the symbol would never be NULL. Leave the value if | |
8534 | there were any relocations where pointer equality matters | |
8535 | (this is a clue for the dynamic linker, to make function | |
8536 | pointer comparisons work between an application and shared | |
8537 | library). */ | |
8538 | if (!h->ref_regular_nonweak || !h->pointer_equality_needed) | |
8539 | sym->st_value = 0; | |
a06ea964 NC |
8540 | } |
8541 | } | |
8542 | ||
8543 | if (h->got.offset != (bfd_vma) - 1 | |
cec5225b | 8544 | && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL) |
a06ea964 NC |
8545 | { |
8546 | Elf_Internal_Rela rela; | |
8547 | bfd_byte *loc; | |
8548 | ||
8549 | /* This symbol has an entry in the global offset table. Set it | |
8550 | up. */ | |
8551 | if (htab->root.sgot == NULL || htab->root.srelgot == NULL) | |
8552 | abort (); | |
8553 | ||
8554 | rela.r_offset = (htab->root.sgot->output_section->vma | |
8555 | + htab->root.sgot->output_offset | |
8556 | + (h->got.offset & ~(bfd_vma) 1)); | |
8557 | ||
49206388 WN |
8558 | if (h->def_regular |
8559 | && h->type == STT_GNU_IFUNC) | |
8560 | { | |
0e1862bb | 8561 | if (bfd_link_pic (info)) |
49206388 WN |
8562 | { |
8563 | /* Generate R_AARCH64_GLOB_DAT. */ | |
8564 | goto do_glob_dat; | |
8565 | } | |
8566 | else | |
8567 | { | |
8568 | asection *plt; | |
8569 | ||
8570 | if (!h->pointer_equality_needed) | |
8571 | abort (); | |
8572 | ||
8573 | /* For non-shared object, we can't use .got.plt, which | |
8574 | contains the real function address if we need pointer | |
8575 | equality. We load the GOT entry with the PLT entry. */ | |
8576 | plt = htab->root.splt ? htab->root.splt : htab->root.iplt; | |
8577 | bfd_put_NN (output_bfd, (plt->output_section->vma | |
8578 | + plt->output_offset | |
8579 | + h->plt.offset), | |
8580 | htab->root.sgot->contents | |
8581 | + (h->got.offset & ~(bfd_vma) 1)); | |
8582 | return TRUE; | |
8583 | } | |
8584 | } | |
0e1862bb | 8585 | else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h)) |
a06ea964 NC |
8586 | { |
8587 | if (!h->def_regular) | |
8588 | return FALSE; | |
8589 | ||
8590 | BFD_ASSERT ((h->got.offset & 1) != 0); | |
a6bb11b2 | 8591 | rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE)); |
a06ea964 NC |
8592 | rela.r_addend = (h->root.u.def.value |
8593 | + h->root.u.def.section->output_section->vma | |
8594 | + h->root.u.def.section->output_offset); | |
8595 | } | |
8596 | else | |
8597 | { | |
49206388 | 8598 | do_glob_dat: |
a06ea964 | 8599 | BFD_ASSERT ((h->got.offset & 1) == 0); |
cec5225b | 8600 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 | 8601 | htab->root.sgot->contents + h->got.offset); |
a6bb11b2 | 8602 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT)); |
a06ea964 NC |
8603 | rela.r_addend = 0; |
8604 | } | |
8605 | ||
8606 | loc = htab->root.srelgot->contents; | |
8607 | loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 8608 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
8609 | } |
8610 | ||
8611 | if (h->needs_copy) | |
8612 | { | |
8613 | Elf_Internal_Rela rela; | |
8614 | bfd_byte *loc; | |
8615 | ||
8616 | /* This symbol needs a copy reloc. Set it up. */ | |
8617 | ||
8618 | if (h->dynindx == -1 | |
8619 | || (h->root.type != bfd_link_hash_defined | |
8620 | && h->root.type != bfd_link_hash_defweak) | |
8621 | || htab->srelbss == NULL) | |
8622 | abort (); | |
8623 | ||
8624 | rela.r_offset = (h->root.u.def.value | |
8625 | + h->root.u.def.section->output_section->vma | |
8626 | + h->root.u.def.section->output_offset); | |
a6bb11b2 | 8627 | rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY)); |
a06ea964 NC |
8628 | rela.r_addend = 0; |
8629 | loc = htab->srelbss->contents; | |
8630 | loc += htab->srelbss->reloc_count++ * RELOC_SIZE (htab); | |
cec5225b | 8631 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); |
a06ea964 NC |
8632 | } |
8633 | ||
8634 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may | |
8635 | be NULL for local symbols. */ | |
8636 | if (sym != NULL | |
9637f6ef | 8637 | && (h == elf_hash_table (info)->hdynamic |
a06ea964 NC |
8638 | || h == elf_hash_table (info)->hgot)) |
8639 | sym->st_shndx = SHN_ABS; | |
8640 | ||
8641 | return TRUE; | |
8642 | } | |
8643 | ||
1419bbe5 WN |
8644 | /* Finish up local dynamic symbol handling. We set the contents of |
8645 | various dynamic sections here. */ | |
8646 | ||
8647 | static bfd_boolean | |
8648 | elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf) | |
8649 | { | |
8650 | struct elf_link_hash_entry *h | |
8651 | = (struct elf_link_hash_entry *) *slot; | |
8652 | struct bfd_link_info *info | |
8653 | = (struct bfd_link_info *) inf; | |
8654 | ||
8655 | return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd, | |
8656 | info, h, NULL); | |
8657 | } | |
8658 | ||
a06ea964 | 8659 | static void |
cec5225b YZ |
8660 | elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED, |
8661 | struct elf_aarch64_link_hash_table | |
a06ea964 NC |
8662 | *htab) |
8663 | { | |
8664 | /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between | |
8665 | small and large plts and at the minute just generates | |
8666 | the small PLT. */ | |
8667 | ||
cec5225b | 8668 | /* PLT0 of the small PLT looks like this in ELF64 - |
a06ea964 NC |
8669 | stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack. |
8670 | adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT | |
8671 | ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the | |
8672 | // symbol resolver | |
8673 | add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the | |
8674 | // GOTPLT entry for this. | |
8675 | br x17 | |
cec5225b YZ |
8676 | PLT0 will be slightly different in ELF32 due to different got entry |
8677 | size. | |
a06ea964 | 8678 | */ |
caed7120 | 8679 | bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */ |
a06ea964 NC |
8680 | bfd_vma plt_base; |
8681 | ||
8682 | ||
cec5225b | 8683 | memcpy (htab->root.splt->contents, elfNN_aarch64_small_plt0_entry, |
a06ea964 NC |
8684 | PLT_ENTRY_SIZE); |
8685 | elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize = | |
8686 | PLT_ENTRY_SIZE; | |
8687 | ||
caed7120 YZ |
8688 | plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma |
8689 | + htab->root.sgotplt->output_offset | |
8690 | + GOT_ENTRY_SIZE * 2); | |
a06ea964 NC |
8691 | |
8692 | plt_base = htab->root.splt->output_section->vma + | |
f44a1f8e | 8693 | htab->root.splt->output_offset; |
a06ea964 NC |
8694 | |
8695 | /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8. | |
8696 | ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */ | |
caed7120 YZ |
8697 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL, |
8698 | htab->root.splt->contents + 4, | |
8699 | PG (plt_got_2nd_ent) - PG (plt_base + 4)); | |
a06ea964 | 8700 | |
caed7120 YZ |
8701 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12, |
8702 | htab->root.splt->contents + 8, | |
8703 | PG_OFFSET (plt_got_2nd_ent)); | |
a06ea964 | 8704 | |
caed7120 YZ |
8705 | elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12, |
8706 | htab->root.splt->contents + 12, | |
8707 | PG_OFFSET (plt_got_2nd_ent)); | |
a06ea964 NC |
8708 | } |
8709 | ||
8710 | static bfd_boolean | |
cec5225b | 8711 | elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd, |
a06ea964 NC |
8712 | struct bfd_link_info *info) |
8713 | { | |
cec5225b | 8714 | struct elf_aarch64_link_hash_table *htab; |
a06ea964 NC |
8715 | bfd *dynobj; |
8716 | asection *sdyn; | |
8717 | ||
cec5225b | 8718 | htab = elf_aarch64_hash_table (info); |
a06ea964 NC |
8719 | dynobj = htab->root.dynobj; |
8720 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); | |
8721 | ||
8722 | if (htab->root.dynamic_sections_created) | |
8723 | { | |
cec5225b | 8724 | ElfNN_External_Dyn *dyncon, *dynconend; |
a06ea964 NC |
8725 | |
8726 | if (sdyn == NULL || htab->root.sgot == NULL) | |
8727 | abort (); | |
8728 | ||
cec5225b YZ |
8729 | dyncon = (ElfNN_External_Dyn *) sdyn->contents; |
8730 | dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size); | |
a06ea964 NC |
8731 | for (; dyncon < dynconend; dyncon++) |
8732 | { | |
8733 | Elf_Internal_Dyn dyn; | |
8734 | asection *s; | |
8735 | ||
cec5225b | 8736 | bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn); |
a06ea964 NC |
8737 | |
8738 | switch (dyn.d_tag) | |
8739 | { | |
8740 | default: | |
8741 | continue; | |
8742 | ||
8743 | case DT_PLTGOT: | |
8744 | s = htab->root.sgotplt; | |
8745 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
8746 | break; | |
8747 | ||
8748 | case DT_JMPREL: | |
8749 | dyn.d_un.d_ptr = htab->root.srelplt->output_section->vma; | |
8750 | break; | |
8751 | ||
8752 | case DT_PLTRELSZ: | |
c955de36 | 8753 | s = htab->root.srelplt; |
a06ea964 NC |
8754 | dyn.d_un.d_val = s->size; |
8755 | break; | |
8756 | ||
8757 | case DT_RELASZ: | |
8758 | /* The procedure linkage table relocs (DT_JMPREL) should | |
8759 | not be included in the overall relocs (DT_RELA). | |
8760 | Therefore, we override the DT_RELASZ entry here to | |
8761 | make it not include the JMPREL relocs. Since the | |
8762 | linker script arranges for .rela.plt to follow all | |
8763 | other relocation sections, we don't have to worry | |
8764 | about changing the DT_RELA entry. */ | |
8765 | if (htab->root.srelplt != NULL) | |
8766 | { | |
c955de36 | 8767 | s = htab->root.srelplt; |
a06ea964 NC |
8768 | dyn.d_un.d_val -= s->size; |
8769 | } | |
8770 | break; | |
8771 | ||
8772 | case DT_TLSDESC_PLT: | |
8773 | s = htab->root.splt; | |
8774 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
8775 | + htab->tlsdesc_plt; | |
8776 | break; | |
8777 | ||
8778 | case DT_TLSDESC_GOT: | |
8779 | s = htab->root.sgot; | |
8780 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset | |
8781 | + htab->dt_tlsdesc_got; | |
8782 | break; | |
8783 | } | |
8784 | ||
cec5225b | 8785 | bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon); |
a06ea964 NC |
8786 | } |
8787 | ||
8788 | } | |
8789 | ||
8790 | /* Fill in the special first entry in the procedure linkage table. */ | |
8791 | if (htab->root.splt && htab->root.splt->size > 0) | |
8792 | { | |
cec5225b | 8793 | elfNN_aarch64_init_small_plt0_entry (output_bfd, htab); |
a06ea964 NC |
8794 | |
8795 | elf_section_data (htab->root.splt->output_section)-> | |
8796 | this_hdr.sh_entsize = htab->plt_entry_size; | |
8797 | ||
8798 | ||
8799 | if (htab->tlsdesc_plt) | |
8800 | { | |
cec5225b | 8801 | bfd_put_NN (output_bfd, (bfd_vma) 0, |
a06ea964 NC |
8802 | htab->root.sgot->contents + htab->dt_tlsdesc_got); |
8803 | ||
8804 | memcpy (htab->root.splt->contents + htab->tlsdesc_plt, | |
cec5225b YZ |
8805 | elfNN_aarch64_tlsdesc_small_plt_entry, |
8806 | sizeof (elfNN_aarch64_tlsdesc_small_plt_entry)); | |
a06ea964 NC |
8807 | |
8808 | { | |
8809 | bfd_vma adrp1_addr = | |
8810 | htab->root.splt->output_section->vma | |
8811 | + htab->root.splt->output_offset + htab->tlsdesc_plt + 4; | |
8812 | ||
caed7120 | 8813 | bfd_vma adrp2_addr = adrp1_addr + 4; |
a06ea964 NC |
8814 | |
8815 | bfd_vma got_addr = | |
8816 | htab->root.sgot->output_section->vma | |
8817 | + htab->root.sgot->output_offset; | |
8818 | ||
8819 | bfd_vma pltgot_addr = | |
8820 | htab->root.sgotplt->output_section->vma | |
8821 | + htab->root.sgotplt->output_offset; | |
8822 | ||
8823 | bfd_vma dt_tlsdesc_got = got_addr + htab->dt_tlsdesc_got; | |
caed7120 YZ |
8824 | |
8825 | bfd_byte *plt_entry = | |
8826 | htab->root.splt->contents + htab->tlsdesc_plt; | |
a06ea964 NC |
8827 | |
8828 | /* adrp x2, DT_TLSDESC_GOT */ | |
caed7120 YZ |
8829 | elf_aarch64_update_plt_entry (output_bfd, |
8830 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
8831 | plt_entry + 4, | |
8832 | (PG (dt_tlsdesc_got) | |
8833 | - PG (adrp1_addr))); | |
a06ea964 NC |
8834 | |
8835 | /* adrp x3, 0 */ | |
caed7120 YZ |
8836 | elf_aarch64_update_plt_entry (output_bfd, |
8837 | BFD_RELOC_AARCH64_ADR_HI21_PCREL, | |
8838 | plt_entry + 8, | |
8839 | (PG (pltgot_addr) | |
8840 | - PG (adrp2_addr))); | |
a06ea964 NC |
8841 | |
8842 | /* ldr x2, [x2, #0] */ | |
caed7120 YZ |
8843 | elf_aarch64_update_plt_entry (output_bfd, |
8844 | BFD_RELOC_AARCH64_LDSTNN_LO12, | |
8845 | plt_entry + 12, | |
8846 | PG_OFFSET (dt_tlsdesc_got)); | |
a06ea964 NC |
8847 | |
8848 | /* add x3, x3, 0 */ | |
caed7120 YZ |
8849 | elf_aarch64_update_plt_entry (output_bfd, |
8850 | BFD_RELOC_AARCH64_ADD_LO12, | |
8851 | plt_entry + 16, | |
8852 | PG_OFFSET (pltgot_addr)); | |
a06ea964 NC |
8853 | } |
8854 | } | |
8855 | } | |
8856 | ||
8857 | if (htab->root.sgotplt) | |
8858 | { | |
8859 | if (bfd_is_abs_section (htab->root.sgotplt->output_section)) | |
8860 | { | |
8861 | (*_bfd_error_handler) | |
8862 | (_("discarded output section: `%A'"), htab->root.sgotplt); | |
8863 | return FALSE; | |
8864 | } | |
8865 | ||
8866 | /* Fill in the first three entries in the global offset table. */ | |
8867 | if (htab->root.sgotplt->size > 0) | |
8868 | { | |
8db339a6 MS |
8869 | bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents); |
8870 | ||
a06ea964 | 8871 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ |
cec5225b | 8872 | bfd_put_NN (output_bfd, |
a06ea964 NC |
8873 | (bfd_vma) 0, |
8874 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE); | |
cec5225b | 8875 | bfd_put_NN (output_bfd, |
a06ea964 NC |
8876 | (bfd_vma) 0, |
8877 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2); | |
8878 | } | |
8879 | ||
8db339a6 MS |
8880 | if (htab->root.sgot) |
8881 | { | |
8882 | if (htab->root.sgot->size > 0) | |
8883 | { | |
8884 | bfd_vma addr = | |
8885 | sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0; | |
8886 | bfd_put_NN (output_bfd, addr, htab->root.sgot->contents); | |
8887 | } | |
8888 | } | |
8889 | ||
a06ea964 NC |
8890 | elf_section_data (htab->root.sgotplt->output_section)-> |
8891 | this_hdr.sh_entsize = GOT_ENTRY_SIZE; | |
8892 | } | |
8893 | ||
8894 | if (htab->root.sgot && htab->root.sgot->size > 0) | |
8895 | elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize | |
8896 | = GOT_ENTRY_SIZE; | |
8897 | ||
1419bbe5 WN |
8898 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
8899 | htab_traverse (htab->loc_hash_table, | |
8900 | elfNN_aarch64_finish_local_dynamic_symbol, | |
8901 | info); | |
8902 | ||
a06ea964 NC |
8903 | return TRUE; |
8904 | } | |
8905 | ||
8906 | /* Return address for Ith PLT stub in section PLT, for relocation REL | |
8907 | or (bfd_vma) -1 if it should not be included. */ | |
8908 | ||
8909 | static bfd_vma | |
cec5225b | 8910 | elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt, |
a06ea964 NC |
8911 | const arelent *rel ATTRIBUTE_UNUSED) |
8912 | { | |
8913 | return plt->vma + PLT_ENTRY_SIZE + i * PLT_SMALL_ENTRY_SIZE; | |
8914 | } | |
8915 | ||
8916 | ||
8917 | /* We use this so we can override certain functions | |
8918 | (though currently we don't). */ | |
8919 | ||
cec5225b | 8920 | const struct elf_size_info elfNN_aarch64_size_info = |
a06ea964 | 8921 | { |
cec5225b YZ |
8922 | sizeof (ElfNN_External_Ehdr), |
8923 | sizeof (ElfNN_External_Phdr), | |
8924 | sizeof (ElfNN_External_Shdr), | |
8925 | sizeof (ElfNN_External_Rel), | |
8926 | sizeof (ElfNN_External_Rela), | |
8927 | sizeof (ElfNN_External_Sym), | |
8928 | sizeof (ElfNN_External_Dyn), | |
a06ea964 NC |
8929 | sizeof (Elf_External_Note), |
8930 | 4, /* Hash table entry size. */ | |
8931 | 1, /* Internal relocs per external relocs. */ | |
cec5225b YZ |
8932 | ARCH_SIZE, /* Arch size. */ |
8933 | LOG_FILE_ALIGN, /* Log_file_align. */ | |
8934 | ELFCLASSNN, EV_CURRENT, | |
8935 | bfd_elfNN_write_out_phdrs, | |
8936 | bfd_elfNN_write_shdrs_and_ehdr, | |
8937 | bfd_elfNN_checksum_contents, | |
8938 | bfd_elfNN_write_relocs, | |
8939 | bfd_elfNN_swap_symbol_in, | |
8940 | bfd_elfNN_swap_symbol_out, | |
8941 | bfd_elfNN_slurp_reloc_table, | |
8942 | bfd_elfNN_slurp_symbol_table, | |
8943 | bfd_elfNN_swap_dyn_in, | |
8944 | bfd_elfNN_swap_dyn_out, | |
8945 | bfd_elfNN_swap_reloc_in, | |
8946 | bfd_elfNN_swap_reloc_out, | |
8947 | bfd_elfNN_swap_reloca_in, | |
8948 | bfd_elfNN_swap_reloca_out | |
a06ea964 NC |
8949 | }; |
8950 | ||
8951 | #define ELF_ARCH bfd_arch_aarch64 | |
8952 | #define ELF_MACHINE_CODE EM_AARCH64 | |
8953 | #define ELF_MAXPAGESIZE 0x10000 | |
8954 | #define ELF_MINPAGESIZE 0x1000 | |
8955 | #define ELF_COMMONPAGESIZE 0x1000 | |
8956 | ||
cec5225b YZ |
8957 | #define bfd_elfNN_close_and_cleanup \ |
8958 | elfNN_aarch64_close_and_cleanup | |
a06ea964 | 8959 | |
cec5225b YZ |
8960 | #define bfd_elfNN_bfd_free_cached_info \ |
8961 | elfNN_aarch64_bfd_free_cached_info | |
a06ea964 | 8962 | |
cec5225b YZ |
8963 | #define bfd_elfNN_bfd_is_target_special_symbol \ |
8964 | elfNN_aarch64_is_target_special_symbol | |
a06ea964 | 8965 | |
cec5225b YZ |
8966 | #define bfd_elfNN_bfd_link_hash_table_create \ |
8967 | elfNN_aarch64_link_hash_table_create | |
a06ea964 | 8968 | |
cec5225b YZ |
8969 | #define bfd_elfNN_bfd_merge_private_bfd_data \ |
8970 | elfNN_aarch64_merge_private_bfd_data | |
a06ea964 | 8971 | |
cec5225b YZ |
8972 | #define bfd_elfNN_bfd_print_private_bfd_data \ |
8973 | elfNN_aarch64_print_private_bfd_data | |
a06ea964 | 8974 | |
cec5225b YZ |
8975 | #define bfd_elfNN_bfd_reloc_type_lookup \ |
8976 | elfNN_aarch64_reloc_type_lookup | |
a06ea964 | 8977 | |
cec5225b YZ |
8978 | #define bfd_elfNN_bfd_reloc_name_lookup \ |
8979 | elfNN_aarch64_reloc_name_lookup | |
a06ea964 | 8980 | |
cec5225b YZ |
8981 | #define bfd_elfNN_bfd_set_private_flags \ |
8982 | elfNN_aarch64_set_private_flags | |
a06ea964 | 8983 | |
cec5225b YZ |
8984 | #define bfd_elfNN_find_inliner_info \ |
8985 | elfNN_aarch64_find_inliner_info | |
a06ea964 | 8986 | |
cec5225b YZ |
8987 | #define bfd_elfNN_find_nearest_line \ |
8988 | elfNN_aarch64_find_nearest_line | |
a06ea964 | 8989 | |
cec5225b YZ |
8990 | #define bfd_elfNN_mkobject \ |
8991 | elfNN_aarch64_mkobject | |
a06ea964 | 8992 | |
cec5225b YZ |
8993 | #define bfd_elfNN_new_section_hook \ |
8994 | elfNN_aarch64_new_section_hook | |
a06ea964 NC |
8995 | |
8996 | #define elf_backend_adjust_dynamic_symbol \ | |
cec5225b | 8997 | elfNN_aarch64_adjust_dynamic_symbol |
a06ea964 NC |
8998 | |
8999 | #define elf_backend_always_size_sections \ | |
cec5225b | 9000 | elfNN_aarch64_always_size_sections |
a06ea964 NC |
9001 | |
9002 | #define elf_backend_check_relocs \ | |
cec5225b | 9003 | elfNN_aarch64_check_relocs |
a06ea964 NC |
9004 | |
9005 | #define elf_backend_copy_indirect_symbol \ | |
cec5225b | 9006 | elfNN_aarch64_copy_indirect_symbol |
a06ea964 NC |
9007 | |
9008 | /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts | |
9009 | to them in our hash. */ | |
9010 | #define elf_backend_create_dynamic_sections \ | |
cec5225b | 9011 | elfNN_aarch64_create_dynamic_sections |
a06ea964 NC |
9012 | |
9013 | #define elf_backend_init_index_section \ | |
9014 | _bfd_elf_init_2_index_sections | |
9015 | ||
a06ea964 | 9016 | #define elf_backend_finish_dynamic_sections \ |
cec5225b | 9017 | elfNN_aarch64_finish_dynamic_sections |
a06ea964 NC |
9018 | |
9019 | #define elf_backend_finish_dynamic_symbol \ | |
cec5225b | 9020 | elfNN_aarch64_finish_dynamic_symbol |
a06ea964 NC |
9021 | |
9022 | #define elf_backend_gc_sweep_hook \ | |
cec5225b | 9023 | elfNN_aarch64_gc_sweep_hook |
a06ea964 NC |
9024 | |
9025 | #define elf_backend_object_p \ | |
cec5225b | 9026 | elfNN_aarch64_object_p |
a06ea964 NC |
9027 | |
9028 | #define elf_backend_output_arch_local_syms \ | |
cec5225b | 9029 | elfNN_aarch64_output_arch_local_syms |
a06ea964 NC |
9030 | |
9031 | #define elf_backend_plt_sym_val \ | |
cec5225b | 9032 | elfNN_aarch64_plt_sym_val |
a06ea964 NC |
9033 | |
9034 | #define elf_backend_post_process_headers \ | |
cec5225b | 9035 | elfNN_aarch64_post_process_headers |
a06ea964 NC |
9036 | |
9037 | #define elf_backend_relocate_section \ | |
cec5225b | 9038 | elfNN_aarch64_relocate_section |
a06ea964 NC |
9039 | |
9040 | #define elf_backend_reloc_type_class \ | |
cec5225b | 9041 | elfNN_aarch64_reloc_type_class |
a06ea964 | 9042 | |
a06ea964 | 9043 | #define elf_backend_section_from_shdr \ |
cec5225b | 9044 | elfNN_aarch64_section_from_shdr |
a06ea964 NC |
9045 | |
9046 | #define elf_backend_size_dynamic_sections \ | |
cec5225b | 9047 | elfNN_aarch64_size_dynamic_sections |
a06ea964 NC |
9048 | |
9049 | #define elf_backend_size_info \ | |
cec5225b | 9050 | elfNN_aarch64_size_info |
a06ea964 | 9051 | |
68fcca92 JW |
9052 | #define elf_backend_write_section \ |
9053 | elfNN_aarch64_write_section | |
9054 | ||
a06ea964 | 9055 | #define elf_backend_can_refcount 1 |
59c108f7 | 9056 | #define elf_backend_can_gc_sections 1 |
a06ea964 NC |
9057 | #define elf_backend_plt_readonly 1 |
9058 | #define elf_backend_want_got_plt 1 | |
9059 | #define elf_backend_want_plt_sym 0 | |
9060 | #define elf_backend_may_use_rel_p 0 | |
9061 | #define elf_backend_may_use_rela_p 1 | |
9062 | #define elf_backend_default_use_rela_p 1 | |
2e0488d3 | 9063 | #define elf_backend_rela_normal 1 |
a06ea964 | 9064 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3) |
c495064d | 9065 | #define elf_backend_default_execstack 0 |
32f573bc | 9066 | #define elf_backend_extern_protected_data 1 |
a06ea964 NC |
9067 | |
9068 | #undef elf_backend_obj_attrs_section | |
9069 | #define elf_backend_obj_attrs_section ".ARM.attributes" | |
9070 | ||
cec5225b | 9071 | #include "elfNN-target.h" |