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f5314dd5 DM |
1 | // sparc.cc -- sparc target support for gold. |
2 | ||
6f2750fe | 3 | // Copyright (C) 2008-2016 Free Software Foundation, Inc. |
f5314dd5 DM |
4 | // Written by David S. Miller <davem@davemloft.net>. |
5 | ||
6 | // This file is part of gold. | |
7 | ||
8 | // This program is free software; you can redistribute it and/or modify | |
9 | // it under the terms of the GNU General Public License as published by | |
10 | // the Free Software Foundation; either version 3 of the License, or | |
11 | // (at your option) any later version. | |
12 | ||
13 | // This program is distributed in the hope that it will be useful, | |
14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | // GNU General Public License for more details. | |
17 | ||
18 | // You should have received a copy of the GNU General Public License | |
19 | // along with this program; if not, write to the Free Software | |
20 | // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
21 | // MA 02110-1301, USA. | |
22 | ||
23 | #include "gold.h" | |
24 | ||
25 | #include <cstdlib> | |
26 | #include <cstdio> | |
27 | #include <cstring> | |
28 | ||
29 | #include "elfcpp.h" | |
30 | #include "parameters.h" | |
31 | #include "reloc.h" | |
32 | #include "sparc.h" | |
33 | #include "object.h" | |
34 | #include "symtab.h" | |
35 | #include "layout.h" | |
36 | #include "output.h" | |
12c0daef | 37 | #include "copy-relocs.h" |
f5314dd5 DM |
38 | #include "target.h" |
39 | #include "target-reloc.h" | |
40 | #include "target-select.h" | |
41 | #include "tls.h" | |
42 | #include "errors.h" | |
f345227a | 43 | #include "gc.h" |
f5314dd5 DM |
44 | |
45 | namespace | |
46 | { | |
47 | ||
48 | using namespace gold; | |
49 | ||
50 | template<int size, bool big_endian> | |
51 | class Output_data_plt_sparc; | |
52 | ||
53 | template<int size, bool big_endian> | |
54 | class Target_sparc : public Sized_target<size, big_endian> | |
55 | { | |
56 | public: | |
57 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section; | |
58 | ||
59 | Target_sparc() | |
60 | : Sized_target<size, big_endian>(&sparc_info), | |
8c2bf391 | 61 | got_(NULL), plt_(NULL), rela_dyn_(NULL), rela_ifunc_(NULL), |
43819297 | 62 | copy_relocs_(elfcpp::R_SPARC_COPY), |
a4d85145 DM |
63 | got_mod_index_offset_(-1U), tls_get_addr_sym_(NULL), |
64 | elf_machine_(sparc_info.machine_code), elf_flags_(0), | |
65 | elf_flags_set_(false) | |
f5314dd5 DM |
66 | { |
67 | } | |
68 | ||
2e702c99 | 69 | // Process the relocations to determine unreferenced sections for |
6d03d481 ST |
70 | // garbage collection. |
71 | void | |
ad0f2072 | 72 | gc_process_relocs(Symbol_table* symtab, |
2e702c99 RM |
73 | Layout* layout, |
74 | Sized_relobj_file<size, big_endian>* object, | |
75 | unsigned int data_shndx, | |
76 | unsigned int sh_type, | |
77 | const unsigned char* prelocs, | |
78 | size_t reloc_count, | |
79 | Output_section* output_section, | |
80 | bool needs_special_offset_handling, | |
81 | size_t local_symbol_count, | |
82 | const unsigned char* plocal_symbols); | |
6d03d481 | 83 | |
f5314dd5 DM |
84 | // Scan the relocations to look for symbol adjustments. |
85 | void | |
ad0f2072 | 86 | scan_relocs(Symbol_table* symtab, |
f5314dd5 | 87 | Layout* layout, |
6fa2a40b | 88 | Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
89 | unsigned int data_shndx, |
90 | unsigned int sh_type, | |
91 | const unsigned char* prelocs, | |
92 | size_t reloc_count, | |
93 | Output_section* output_section, | |
94 | bool needs_special_offset_handling, | |
95 | size_t local_symbol_count, | |
96 | const unsigned char* plocal_symbols); | |
97 | // Finalize the sections. | |
98 | void | |
f59f41f3 | 99 | do_finalize_sections(Layout*, const Input_objects*, Symbol_table*); |
f5314dd5 DM |
100 | |
101 | // Return the value to use for a dynamic which requires special | |
102 | // treatment. | |
103 | uint64_t | |
104 | do_dynsym_value(const Symbol*) const; | |
105 | ||
106 | // Relocate a section. | |
107 | void | |
108 | relocate_section(const Relocate_info<size, big_endian>*, | |
109 | unsigned int sh_type, | |
110 | const unsigned char* prelocs, | |
111 | size_t reloc_count, | |
112 | Output_section* output_section, | |
113 | bool needs_special_offset_handling, | |
114 | unsigned char* view, | |
115 | typename elfcpp::Elf_types<size>::Elf_Addr view_address, | |
364c7fa5 ILT |
116 | section_size_type view_size, |
117 | const Reloc_symbol_changes*); | |
f5314dd5 DM |
118 | |
119 | // Scan the relocs during a relocatable link. | |
120 | void | |
ad0f2072 | 121 | scan_relocatable_relocs(Symbol_table* symtab, |
f5314dd5 | 122 | Layout* layout, |
6fa2a40b | 123 | Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
124 | unsigned int data_shndx, |
125 | unsigned int sh_type, | |
126 | const unsigned char* prelocs, | |
127 | size_t reloc_count, | |
128 | Output_section* output_section, | |
129 | bool needs_special_offset_handling, | |
130 | size_t local_symbol_count, | |
131 | const unsigned char* plocal_symbols, | |
132 | Relocatable_relocs*); | |
133 | ||
4d625b70 CC |
134 | // Scan the relocs for --emit-relocs. |
135 | void | |
136 | emit_relocs_scan(Symbol_table* symtab, | |
137 | Layout* layout, | |
138 | Sized_relobj_file<size, big_endian>* object, | |
139 | unsigned int data_shndx, | |
140 | unsigned int sh_type, | |
141 | const unsigned char* prelocs, | |
142 | size_t reloc_count, | |
143 | Output_section* output_section, | |
144 | bool needs_special_offset_handling, | |
145 | size_t local_symbol_count, | |
146 | const unsigned char* plocal_syms, | |
147 | Relocatable_relocs* rr); | |
148 | ||
7404fe1b | 149 | // Emit relocations for a section. |
f5314dd5 | 150 | void |
7404fe1b AM |
151 | relocate_relocs(const Relocate_info<size, big_endian>*, |
152 | unsigned int sh_type, | |
153 | const unsigned char* prelocs, | |
154 | size_t reloc_count, | |
155 | Output_section* output_section, | |
62fe925a RM |
156 | typename elfcpp::Elf_types<size>::Elf_Off |
157 | offset_in_output_section, | |
7404fe1b AM |
158 | unsigned char* view, |
159 | typename elfcpp::Elf_types<size>::Elf_Addr view_address, | |
160 | section_size_type view_size, | |
161 | unsigned char* reloc_view, | |
162 | section_size_type reloc_view_size); | |
163 | ||
f5314dd5 DM |
164 | // Return whether SYM is defined by the ABI. |
165 | bool | |
9c2d0ef9 | 166 | do_is_defined_by_abi(const Symbol* sym) const |
f5314dd5 DM |
167 | { |
168 | // XXX Really need to support this better... | |
169 | if (sym->type() == elfcpp::STT_SPARC_REGISTER) | |
170 | return 1; | |
171 | ||
172 | return strcmp(sym->name(), "___tls_get_addr") == 0; | |
173 | } | |
174 | ||
8c2bf391 DM |
175 | // Return the PLT address to use for a global symbol. |
176 | uint64_t | |
177 | do_plt_address_for_global(const Symbol* gsym) const | |
178 | { return this->plt_section()->address_for_global(gsym); } | |
179 | ||
180 | uint64_t | |
181 | do_plt_address_for_local(const Relobj* relobj, unsigned int symndx) const | |
182 | { return this->plt_section()->address_for_local(relobj, symndx); } | |
183 | ||
9efe6174 ILT |
184 | // Return whether there is a GOT section. |
185 | bool | |
186 | has_got_section() const | |
187 | { return this->got_ != NULL; } | |
188 | ||
f5314dd5 DM |
189 | // Return the size of the GOT section. |
190 | section_size_type | |
0e70b911 | 191 | got_size() const |
f5314dd5 DM |
192 | { |
193 | gold_assert(this->got_ != NULL); | |
194 | return this->got_->data_size(); | |
195 | } | |
196 | ||
0e70b911 CC |
197 | // Return the number of entries in the GOT. |
198 | unsigned int | |
199 | got_entry_count() const | |
200 | { | |
201 | if (this->got_ == NULL) | |
202 | return 0; | |
203 | return this->got_size() / (size / 8); | |
204 | } | |
205 | ||
2a1079e8 DM |
206 | // Return the address of the GOT. |
207 | uint64_t | |
208 | got_address() const | |
209 | { | |
210 | if (this->got_ == NULL) | |
211 | return 0; | |
212 | return this->got_->address(); | |
213 | } | |
214 | ||
0e70b911 CC |
215 | // Return the number of entries in the PLT. |
216 | unsigned int | |
217 | plt_entry_count() const; | |
218 | ||
219 | // Return the offset of the first non-reserved PLT entry. | |
220 | unsigned int | |
221 | first_plt_entry_offset() const; | |
222 | ||
223 | // Return the size of each PLT entry. | |
224 | unsigned int | |
225 | plt_entry_size() const; | |
226 | ||
a4d85145 DM |
227 | protected: |
228 | // Make an ELF object. | |
229 | Object* | |
230 | do_make_elf_object(const std::string&, Input_file*, off_t, | |
231 | const elfcpp::Ehdr<size, big_endian>& ehdr); | |
232 | ||
233 | void | |
cc84c10b | 234 | do_adjust_elf_header(unsigned char* view, int len); |
a4d85145 | 235 | |
f5314dd5 DM |
236 | private: |
237 | ||
238 | // The class which scans relocations. | |
32b769e1 | 239 | class Scan |
f5314dd5 | 240 | { |
32b769e1 DM |
241 | public: |
242 | Scan() | |
243 | : issued_non_pic_error_(false) | |
244 | { } | |
245 | ||
95a2c8d6 RS |
246 | static inline int |
247 | get_reference_flags(unsigned int r_type); | |
248 | ||
f5314dd5 | 249 | inline void |
ad0f2072 | 250 | local(Symbol_table* symtab, Layout* layout, Target_sparc* target, |
6fa2a40b | 251 | Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
252 | unsigned int data_shndx, |
253 | Output_section* output_section, | |
254 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
bfdfa4cd AM |
255 | const elfcpp::Sym<size, big_endian>& lsym, |
256 | bool is_discarded); | |
f5314dd5 DM |
257 | |
258 | inline void | |
ad0f2072 | 259 | global(Symbol_table* symtab, Layout* layout, Target_sparc* target, |
6fa2a40b | 260 | Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
261 | unsigned int data_shndx, |
262 | Output_section* output_section, | |
263 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
264 | Symbol* gsym); | |
265 | ||
21bb3914 ST |
266 | inline bool |
267 | local_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
2e702c99 RM |
268 | Target_sparc* , |
269 | Sized_relobj_file<size, big_endian>* , | |
21bb3914 | 270 | unsigned int , |
2e702c99 RM |
271 | Output_section* , |
272 | const elfcpp::Rela<size, big_endian>& , | |
273 | unsigned int , | |
274 | const elfcpp::Sym<size, big_endian>&) | |
21bb3914 ST |
275 | { return false; } |
276 | ||
277 | inline bool | |
278 | global_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
2e702c99 RM |
279 | Target_sparc* , |
280 | Sized_relobj_file<size, big_endian>* , | |
281 | unsigned int , | |
282 | Output_section* , | |
283 | const elfcpp::Rela<size, | |
284 | big_endian>& , | |
285 | unsigned int , Symbol*) | |
21bb3914 ST |
286 | { return false; } |
287 | ||
288 | ||
32b769e1 | 289 | private: |
f5314dd5 | 290 | static void |
6fa2a40b | 291 | unsupported_reloc_local(Sized_relobj_file<size, big_endian>*, |
f5314dd5 DM |
292 | unsigned int r_type); |
293 | ||
294 | static void | |
6fa2a40b | 295 | unsupported_reloc_global(Sized_relobj_file<size, big_endian>*, |
f5314dd5 DM |
296 | unsigned int r_type, Symbol*); |
297 | ||
298 | static void | |
299 | generate_tls_call(Symbol_table* symtab, Layout* layout, | |
300 | Target_sparc* target); | |
32b769e1 DM |
301 | |
302 | void | |
303 | check_non_pic(Relobj*, unsigned int r_type); | |
304 | ||
8c2bf391 DM |
305 | bool |
306 | reloc_needs_plt_for_ifunc(Sized_relobj_file<size, big_endian>*, | |
307 | unsigned int r_type); | |
308 | ||
32b769e1 DM |
309 | // Whether we have issued an error about a non-PIC compilation. |
310 | bool issued_non_pic_error_; | |
f5314dd5 DM |
311 | }; |
312 | ||
313 | // The class which implements relocation. | |
314 | class Relocate | |
315 | { | |
316 | public: | |
317 | Relocate() | |
abd242a9 | 318 | : ignore_gd_add_(false), reloc_adjust_addr_(NULL) |
f5314dd5 DM |
319 | { } |
320 | ||
321 | ~Relocate() | |
322 | { | |
323 | if (this->ignore_gd_add_) | |
324 | { | |
325 | // FIXME: This needs to specify the location somehow. | |
326 | gold_error(_("missing expected TLS relocation")); | |
327 | } | |
328 | } | |
329 | ||
330 | // Do a relocation. Return false if the caller should not issue | |
331 | // any warnings about this relocation. | |
332 | inline bool | |
91a65d2f AM |
333 | relocate(const Relocate_info<size, big_endian>*, unsigned int, |
334 | Target_sparc*, Output_section*, size_t, const unsigned char*, | |
335 | const Sized_symbol<size>*, const Symbol_value<size>*, | |
336 | unsigned char*, typename elfcpp::Elf_types<size>::Elf_Addr, | |
f5314dd5 DM |
337 | section_size_type); |
338 | ||
339 | private: | |
340 | // Do a TLS relocation. | |
341 | inline void | |
342 | relocate_tls(const Relocate_info<size, big_endian>*, Target_sparc* target, | |
2e702c99 | 343 | size_t relnum, const elfcpp::Rela<size, big_endian>&, |
f5314dd5 DM |
344 | unsigned int r_type, const Sized_symbol<size>*, |
345 | const Symbol_value<size>*, | |
346 | unsigned char*, | |
347 | typename elfcpp::Elf_types<size>::Elf_Addr, | |
348 | section_size_type); | |
349 | ||
a5a5f7a3 DM |
350 | inline void |
351 | relax_call(Target_sparc<size, big_endian>* target, | |
352 | unsigned char* view, | |
353 | const elfcpp::Rela<size, big_endian>& rela, | |
354 | section_size_type view_size); | |
355 | ||
f5314dd5 DM |
356 | // Ignore the next relocation which should be R_SPARC_TLS_GD_ADD |
357 | bool ignore_gd_add_; | |
abd242a9 DM |
358 | |
359 | // If we hit a reloc at this view address, adjust it back by 4 bytes. | |
360 | unsigned char *reloc_adjust_addr_; | |
f5314dd5 DM |
361 | }; |
362 | ||
f5314dd5 DM |
363 | // Get the GOT section, creating it if necessary. |
364 | Output_data_got<size, big_endian>* | |
365 | got_section(Symbol_table*, Layout*); | |
366 | ||
8c2bf391 DM |
367 | // Create the PLT section. |
368 | void | |
369 | make_plt_section(Symbol_table* symtab, Layout* layout); | |
370 | ||
f5314dd5 DM |
371 | // Create a PLT entry for a global symbol. |
372 | void | |
373 | make_plt_entry(Symbol_table*, Layout*, Symbol*); | |
374 | ||
8c2bf391 DM |
375 | // Create a PLT entry for a local STT_GNU_IFUNC symbol. |
376 | void | |
377 | make_local_ifunc_plt_entry(Symbol_table*, Layout*, | |
378 | Sized_relobj_file<size, big_endian>* relobj, | |
379 | unsigned int local_sym_index); | |
380 | ||
f5314dd5 DM |
381 | // Create a GOT entry for the TLS module index. |
382 | unsigned int | |
383 | got_mod_index_entry(Symbol_table* symtab, Layout* layout, | |
6fa2a40b | 384 | Sized_relobj_file<size, big_endian>* object); |
f5314dd5 DM |
385 | |
386 | // Return the gsym for "__tls_get_addr". Cache if not already | |
387 | // cached. | |
388 | Symbol* | |
389 | tls_get_addr_sym(Symbol_table* symtab) | |
390 | { | |
391 | if (!this->tls_get_addr_sym_) | |
392 | this->tls_get_addr_sym_ = symtab->lookup("__tls_get_addr", NULL); | |
393 | gold_assert(this->tls_get_addr_sym_); | |
394 | return this->tls_get_addr_sym_; | |
395 | } | |
396 | ||
397 | // Get the PLT section. | |
8c2bf391 | 398 | Output_data_plt_sparc<size, big_endian>* |
f5314dd5 DM |
399 | plt_section() const |
400 | { | |
401 | gold_assert(this->plt_ != NULL); | |
402 | return this->plt_; | |
403 | } | |
404 | ||
405 | // Get the dynamic reloc section, creating it if necessary. | |
406 | Reloc_section* | |
407 | rela_dyn_section(Layout*); | |
408 | ||
8c2bf391 DM |
409 | // Get the section to use for IFUNC relocations. |
410 | Reloc_section* | |
411 | rela_ifunc_section(Layout*); | |
412 | ||
f5314dd5 DM |
413 | // Copy a relocation against a global symbol. |
414 | void | |
ef9beddf | 415 | copy_reloc(Symbol_table* symtab, Layout* layout, |
2e702c99 | 416 | Sized_relobj_file<size, big_endian>* object, |
12c0daef ILT |
417 | unsigned int shndx, Output_section* output_section, |
418 | Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc) | |
419 | { | |
859d7987 | 420 | unsigned int r_type = elfcpp::elf_r_type<size>(reloc.get_r_info()); |
12c0daef ILT |
421 | this->copy_relocs_.copy_reloc(symtab, layout, |
422 | symtab->get_sized_symbol<size>(sym), | |
423 | object, shndx, output_section, | |
859d7987 CC |
424 | r_type, reloc.get_r_offset(), |
425 | reloc.get_r_addend(), | |
426 | this->rela_dyn_section(layout)); | |
12c0daef | 427 | } |
f5314dd5 DM |
428 | |
429 | // Information about this specific target which we pass to the | |
430 | // general Target structure. | |
431 | static Target::Target_info sparc_info; | |
432 | ||
433 | // The types of GOT entries needed for this platform. | |
0e70b911 CC |
434 | // These values are exposed to the ABI in an incremental link. |
435 | // Do not renumber existing values without changing the version | |
436 | // number of the .gnu_incremental_inputs section. | |
f5314dd5 DM |
437 | enum Got_type |
438 | { | |
439 | GOT_TYPE_STANDARD = 0, // GOT entry for a regular symbol | |
440 | GOT_TYPE_TLS_OFFSET = 1, // GOT entry for TLS offset | |
441 | GOT_TYPE_TLS_PAIR = 2, // GOT entry for TLS module/offset pair | |
442 | }; | |
443 | ||
444 | // The GOT section. | |
445 | Output_data_got<size, big_endian>* got_; | |
446 | // The PLT section. | |
447 | Output_data_plt_sparc<size, big_endian>* plt_; | |
448 | // The dynamic reloc section. | |
449 | Reloc_section* rela_dyn_; | |
8c2bf391 DM |
450 | // The section to use for IFUNC relocs. |
451 | Reloc_section* rela_ifunc_; | |
f5314dd5 | 452 | // Relocs saved to avoid a COPY reloc. |
12c0daef | 453 | Copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_; |
f5314dd5 DM |
454 | // Offset of the GOT entry for the TLS module index; |
455 | unsigned int got_mod_index_offset_; | |
456 | // Cached pointer to __tls_get_addr symbol | |
457 | Symbol* tls_get_addr_sym_; | |
a4d85145 DM |
458 | // Accumulated elf machine type |
459 | elfcpp::Elf_Half elf_machine_; | |
460 | // Accumulated elf header flags | |
461 | elfcpp::Elf_Word elf_flags_; | |
462 | // Whether elf_flags_ has been set for the first time yet | |
463 | bool elf_flags_set_; | |
f5314dd5 DM |
464 | }; |
465 | ||
466 | template<> | |
467 | Target::Target_info Target_sparc<32, true>::sparc_info = | |
468 | { | |
469 | 32, // size | |
470 | true, // is_big_endian | |
471 | elfcpp::EM_SPARC, // machine_code | |
472 | false, // has_make_symbol | |
473 | false, // has_resolve | |
474 | false, // has_code_fill | |
475 | true, // is_default_stack_executable | |
b3ce541e | 476 | false, // can_icf_inline_merge_sections |
f5314dd5 DM |
477 | '\0', // wrap_char |
478 | "/usr/lib/ld.so.1", // dynamic_linker | |
479 | 0x00010000, // default_text_segment_address | |
480 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 481 | 8 * 1024, // common_pagesize (overridable by -z common-page-size) |
2e702c99 RM |
482 | false, // isolate_execinstr |
483 | 0, // rosegment_gap | |
8a5e3e08 ILT |
484 | elfcpp::SHN_UNDEF, // small_common_shndx |
485 | elfcpp::SHN_UNDEF, // large_common_shndx | |
486 | 0, // small_common_section_flags | |
05a352e6 DK |
487 | 0, // large_common_section_flags |
488 | NULL, // attributes_section | |
a67858e0 | 489 | NULL, // attributes_vendor |
8d9743bd MK |
490 | "_start", // entry_symbol_name |
491 | 32, // hash_entry_size | |
f5314dd5 DM |
492 | }; |
493 | ||
494 | template<> | |
495 | Target::Target_info Target_sparc<64, true>::sparc_info = | |
496 | { | |
497 | 64, // size | |
498 | true, // is_big_endian | |
499 | elfcpp::EM_SPARCV9, // machine_code | |
500 | false, // has_make_symbol | |
501 | false, // has_resolve | |
502 | false, // has_code_fill | |
503 | true, // is_default_stack_executable | |
b3ce541e | 504 | false, // can_icf_inline_merge_sections |
f5314dd5 DM |
505 | '\0', // wrap_char |
506 | "/usr/lib/sparcv9/ld.so.1", // dynamic_linker | |
507 | 0x100000, // default_text_segment_address | |
508 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 509 | 8 * 1024, // common_pagesize (overridable by -z common-page-size) |
2e702c99 RM |
510 | false, // isolate_execinstr |
511 | 0, // rosegment_gap | |
8a5e3e08 ILT |
512 | elfcpp::SHN_UNDEF, // small_common_shndx |
513 | elfcpp::SHN_UNDEF, // large_common_shndx | |
514 | 0, // small_common_section_flags | |
05a352e6 DK |
515 | 0, // large_common_section_flags |
516 | NULL, // attributes_section | |
a67858e0 | 517 | NULL, // attributes_vendor |
8d9743bd MK |
518 | "_start", // entry_symbol_name |
519 | 32, // hash_entry_size | |
f5314dd5 DM |
520 | }; |
521 | ||
522 | // We have to take care here, even when operating in little-endian | |
523 | // mode, sparc instructions are still big endian. | |
524 | template<int size, bool big_endian> | |
525 | class Sparc_relocate_functions | |
526 | { | |
527 | private: | |
528 | // Do a simple relocation with the addend in the relocation. | |
529 | template<int valsize> | |
530 | static inline void | |
531 | rela(unsigned char* view, | |
532 | unsigned int right_shift, | |
533 | typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask, | |
2ea97941 | 534 | typename elfcpp::Swap<size, big_endian>::Valtype value, |
f5314dd5 DM |
535 | typename elfcpp::Swap<size, big_endian>::Valtype addend) |
536 | { | |
537 | typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype; | |
538 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
539 | Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv); | |
2ea97941 | 540 | Valtype reloc = ((value + addend) >> right_shift); |
f5314dd5 DM |
541 | |
542 | val &= ~dst_mask; | |
543 | reloc &= dst_mask; | |
544 | ||
545 | elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc); | |
546 | } | |
547 | ||
548 | // Do a simple relocation using a symbol value with the addend in | |
549 | // the relocation. | |
550 | template<int valsize> | |
551 | static inline void | |
552 | rela(unsigned char* view, | |
553 | unsigned int right_shift, | |
554 | typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask, | |
6fa2a40b | 555 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
556 | const Symbol_value<size>* psymval, |
557 | typename elfcpp::Swap<valsize, big_endian>::Valtype addend) | |
558 | { | |
559 | typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype; | |
560 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
561 | Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv); | |
562 | Valtype reloc = (psymval->value(object, addend) >> right_shift); | |
563 | ||
564 | val &= ~dst_mask; | |
565 | reloc &= dst_mask; | |
566 | ||
567 | elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc); | |
568 | } | |
569 | ||
570 | // Do a simple relocation using a symbol value with the addend in | |
571 | // the relocation, unaligned. | |
572 | template<int valsize> | |
573 | static inline void | |
574 | rela_ua(unsigned char* view, | |
575 | unsigned int right_shift, elfcpp::Elf_Xword dst_mask, | |
6fa2a40b | 576 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
577 | const Symbol_value<size>* psymval, |
578 | typename elfcpp::Swap<size, big_endian>::Valtype addend) | |
579 | { | |
580 | typedef typename elfcpp::Swap_unaligned<valsize, | |
581 | big_endian>::Valtype Valtype; | |
582 | unsigned char* wv = view; | |
583 | Valtype val = elfcpp::Swap_unaligned<valsize, big_endian>::readval(wv); | |
584 | Valtype reloc = (psymval->value(object, addend) >> right_shift); | |
585 | ||
586 | val &= ~dst_mask; | |
587 | reloc &= dst_mask; | |
588 | ||
589 | elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, val | reloc); | |
590 | } | |
591 | ||
592 | // Do a simple PC relative relocation with a Symbol_value with the | |
593 | // addend in the relocation. | |
594 | template<int valsize> | |
595 | static inline void | |
596 | pcrela(unsigned char* view, | |
597 | unsigned int right_shift, | |
598 | typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask, | |
6fa2a40b | 599 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
600 | const Symbol_value<size>* psymval, |
601 | typename elfcpp::Swap<size, big_endian>::Valtype addend, | |
602 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
603 | { | |
604 | typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype; | |
605 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
606 | Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv); | |
607 | Valtype reloc = ((psymval->value(object, addend) - address) | |
608 | >> right_shift); | |
609 | ||
610 | val &= ~dst_mask; | |
611 | reloc &= dst_mask; | |
612 | ||
613 | elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc); | |
614 | } | |
615 | ||
616 | template<int valsize> | |
617 | static inline void | |
618 | pcrela_unaligned(unsigned char* view, | |
6fa2a40b | 619 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
620 | const Symbol_value<size>* psymval, |
621 | typename elfcpp::Swap<size, big_endian>::Valtype addend, | |
622 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
623 | { | |
624 | typedef typename elfcpp::Swap_unaligned<valsize, | |
625 | big_endian>::Valtype Valtype; | |
626 | unsigned char* wv = view; | |
627 | Valtype reloc = (psymval->value(object, addend) - address); | |
628 | ||
629 | elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, reloc); | |
630 | } | |
631 | ||
632 | typedef Sparc_relocate_functions<size, big_endian> This; | |
633 | typedef Sparc_relocate_functions<size, true> This_insn; | |
634 | ||
635 | public: | |
636 | // R_SPARC_WDISP30: (Symbol + Addend - Address) >> 2 | |
637 | static inline void | |
638 | wdisp30(unsigned char* view, | |
6fa2a40b | 639 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
640 | const Symbol_value<size>* psymval, |
641 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
642 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
643 | { | |
644 | This_insn::template pcrela<32>(view, 2, 0x3fffffff, object, | |
645 | psymval, addend, address); | |
646 | } | |
647 | ||
648 | // R_SPARC_WDISP22: (Symbol + Addend - Address) >> 2 | |
649 | static inline void | |
650 | wdisp22(unsigned char* view, | |
6fa2a40b | 651 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
652 | const Symbol_value<size>* psymval, |
653 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
654 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
655 | { | |
656 | This_insn::template pcrela<32>(view, 2, 0x003fffff, object, | |
657 | psymval, addend, address); | |
658 | } | |
659 | ||
660 | // R_SPARC_WDISP19: (Symbol + Addend - Address) >> 2 | |
661 | static inline void | |
662 | wdisp19(unsigned char* view, | |
6fa2a40b | 663 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
664 | const Symbol_value<size>* psymval, |
665 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
666 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
667 | { | |
668 | This_insn::template pcrela<32>(view, 2, 0x0007ffff, object, | |
669 | psymval, addend, address); | |
670 | } | |
671 | ||
672 | // R_SPARC_WDISP16: (Symbol + Addend - Address) >> 2 | |
673 | static inline void | |
674 | wdisp16(unsigned char* view, | |
6fa2a40b | 675 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
676 | const Symbol_value<size>* psymval, |
677 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
678 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
679 | { | |
680 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
681 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
682 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
683 | Valtype reloc = ((psymval->value(object, addend) - address) | |
684 | >> 2); | |
685 | ||
686 | // The relocation value is split between the low 14 bits, | |
687 | // and bits 20-21. | |
688 | val &= ~((0x3 << 20) | 0x3fff); | |
689 | reloc = (((reloc & 0xc000) << (20 - 14)) | |
690 | | (reloc & 0x3ffff)); | |
691 | ||
692 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
693 | } | |
694 | ||
2615994e DM |
695 | // R_SPARC_WDISP10: (Symbol + Addend - Address) >> 2 |
696 | static inline void | |
697 | wdisp10(unsigned char* view, | |
698 | const Sized_relobj_file<size, big_endian>* object, | |
699 | const Symbol_value<size>* psymval, | |
700 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
701 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
702 | { | |
703 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
704 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
705 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
706 | Valtype reloc = ((psymval->value(object, addend) - address) | |
707 | >> 2); | |
708 | ||
709 | // The relocation value is split between the low bits 5-12, | |
710 | // and high bits 19-20. | |
711 | val &= ~((0x3 << 19) | (0xff << 5)); | |
712 | reloc = (((reloc & 0x300) << (19 - 8)) | |
713 | | ((reloc & 0xff) << (5 - 0))); | |
714 | ||
715 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
716 | } | |
717 | ||
f5314dd5 DM |
718 | // R_SPARC_PC22: (Symbol + Addend - Address) >> 10 |
719 | static inline void | |
720 | pc22(unsigned char* view, | |
6fa2a40b | 721 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
722 | const Symbol_value<size>* psymval, |
723 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
724 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
725 | { | |
726 | This_insn::template pcrela<32>(view, 10, 0x003fffff, object, | |
727 | psymval, addend, address); | |
728 | } | |
729 | ||
730 | // R_SPARC_PC10: (Symbol + Addend - Address) & 0x3ff | |
731 | static inline void | |
732 | pc10(unsigned char* view, | |
6fa2a40b | 733 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
734 | const Symbol_value<size>* psymval, |
735 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
736 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
737 | { | |
738 | This_insn::template pcrela<32>(view, 0, 0x000003ff, object, | |
739 | psymval, addend, address); | |
740 | } | |
741 | ||
742 | // R_SPARC_HI22: (Symbol + Addend) >> 10 | |
743 | static inline void | |
744 | hi22(unsigned char* view, | |
2ea97941 | 745 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
f5314dd5 DM |
746 | typename elfcpp::Elf_types<size>::Elf_Addr addend) |
747 | { | |
2ea97941 | 748 | This_insn::template rela<32>(view, 10, 0x003fffff, value, addend); |
f5314dd5 DM |
749 | } |
750 | ||
751 | // R_SPARC_HI22: (Symbol + Addend) >> 10 | |
752 | static inline void | |
753 | hi22(unsigned char* view, | |
6fa2a40b | 754 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
755 | const Symbol_value<size>* psymval, |
756 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
757 | { | |
758 | This_insn::template rela<32>(view, 10, 0x003fffff, object, psymval, addend); | |
759 | } | |
760 | ||
761 | // R_SPARC_PCPLT22: (Symbol + Addend - Address) >> 10 | |
762 | static inline void | |
763 | pcplt22(unsigned char* view, | |
6fa2a40b | 764 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
765 | const Symbol_value<size>* psymval, |
766 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
767 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
768 | { | |
769 | This_insn::template pcrela<32>(view, 10, 0x003fffff, object, | |
770 | psymval, addend, address); | |
771 | } | |
772 | ||
773 | // R_SPARC_LO10: (Symbol + Addend) & 0x3ff | |
774 | static inline void | |
775 | lo10(unsigned char* view, | |
2ea97941 | 776 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
f5314dd5 DM |
777 | typename elfcpp::Elf_types<size>::Elf_Addr addend) |
778 | { | |
2ea97941 | 779 | This_insn::template rela<32>(view, 0, 0x000003ff, value, addend); |
f5314dd5 DM |
780 | } |
781 | ||
782 | // R_SPARC_LO10: (Symbol + Addend) & 0x3ff | |
783 | static inline void | |
784 | lo10(unsigned char* view, | |
6fa2a40b | 785 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
786 | const Symbol_value<size>* psymval, |
787 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
788 | { | |
789 | This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend); | |
790 | } | |
791 | ||
792 | // R_SPARC_LO10: (Symbol + Addend) & 0x3ff | |
793 | static inline void | |
794 | lo10(unsigned char* view, | |
6fa2a40b | 795 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
796 | const Symbol_value<size>* psymval, |
797 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
798 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
799 | { | |
800 | This_insn::template pcrela<32>(view, 0, 0x000003ff, object, | |
801 | psymval, addend, address); | |
802 | } | |
803 | ||
804 | // R_SPARC_OLO10: ((Symbol + Addend) & 0x3ff) + Addend2 | |
805 | static inline void | |
806 | olo10(unsigned char* view, | |
6fa2a40b | 807 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
808 | const Symbol_value<size>* psymval, |
809 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
810 | typename elfcpp::Elf_types<size>::Elf_Addr addend2) | |
811 | { | |
812 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
813 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
814 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
815 | Valtype reloc = psymval->value(object, addend); | |
816 | ||
817 | val &= ~0x1fff; | |
818 | reloc &= 0x3ff; | |
819 | reloc += addend2; | |
820 | reloc &= 0x1fff; | |
821 | ||
822 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
823 | } | |
824 | ||
825 | // R_SPARC_22: (Symbol + Addend) | |
826 | static inline void | |
827 | rela32_22(unsigned char* view, | |
6fa2a40b | 828 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
829 | const Symbol_value<size>* psymval, |
830 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
831 | { | |
832 | This_insn::template rela<32>(view, 0, 0x003fffff, object, psymval, addend); | |
833 | } | |
834 | ||
835 | // R_SPARC_13: (Symbol + Addend) | |
836 | static inline void | |
837 | rela32_13(unsigned char* view, | |
2ea97941 | 838 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
f5314dd5 DM |
839 | typename elfcpp::Elf_types<size>::Elf_Addr addend) |
840 | { | |
2ea97941 | 841 | This_insn::template rela<32>(view, 0, 0x00001fff, value, addend); |
f5314dd5 DM |
842 | } |
843 | ||
844 | // R_SPARC_13: (Symbol + Addend) | |
845 | static inline void | |
846 | rela32_13(unsigned char* view, | |
6fa2a40b | 847 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
848 | const Symbol_value<size>* psymval, |
849 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
850 | { | |
851 | This_insn::template rela<32>(view, 0, 0x00001fff, object, psymval, addend); | |
852 | } | |
853 | ||
854 | // R_SPARC_UA16: (Symbol + Addend) | |
855 | static inline void | |
856 | ua16(unsigned char* view, | |
6fa2a40b | 857 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
858 | const Symbol_value<size>* psymval, |
859 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
860 | { | |
861 | This::template rela_ua<16>(view, 0, 0xffff, object, psymval, addend); | |
862 | } | |
863 | ||
864 | // R_SPARC_UA32: (Symbol + Addend) | |
865 | static inline void | |
866 | ua32(unsigned char* view, | |
6fa2a40b | 867 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
868 | const Symbol_value<size>* psymval, |
869 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
870 | { | |
871 | This::template rela_ua<32>(view, 0, 0xffffffff, object, psymval, addend); | |
872 | } | |
873 | ||
874 | // R_SPARC_UA64: (Symbol + Addend) | |
875 | static inline void | |
876 | ua64(unsigned char* view, | |
6fa2a40b | 877 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
878 | const Symbol_value<size>* psymval, |
879 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
880 | { | |
881 | This::template rela_ua<64>(view, 0, ~(elfcpp::Elf_Xword) 0, | |
882 | object, psymval, addend); | |
883 | } | |
884 | ||
885 | // R_SPARC_DISP8: (Symbol + Addend - Address) | |
886 | static inline void | |
887 | disp8(unsigned char* view, | |
6fa2a40b | 888 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
889 | const Symbol_value<size>* psymval, |
890 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
891 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
892 | { | |
893 | This::template pcrela_unaligned<8>(view, object, psymval, | |
894 | addend, address); | |
895 | } | |
896 | ||
897 | // R_SPARC_DISP16: (Symbol + Addend - Address) | |
898 | static inline void | |
899 | disp16(unsigned char* view, | |
6fa2a40b | 900 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
901 | const Symbol_value<size>* psymval, |
902 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
903 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
904 | { | |
905 | This::template pcrela_unaligned<16>(view, object, psymval, | |
906 | addend, address); | |
907 | } | |
908 | ||
909 | // R_SPARC_DISP32: (Symbol + Addend - Address) | |
910 | static inline void | |
911 | disp32(unsigned char* view, | |
6fa2a40b | 912 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
913 | const Symbol_value<size>* psymval, |
914 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
915 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
916 | { | |
917 | This::template pcrela_unaligned<32>(view, object, psymval, | |
918 | addend, address); | |
919 | } | |
920 | ||
921 | // R_SPARC_DISP64: (Symbol + Addend - Address) | |
922 | static inline void | |
923 | disp64(unsigned char* view, | |
6fa2a40b | 924 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
925 | const Symbol_value<size>* psymval, |
926 | elfcpp::Elf_Xword addend, | |
927 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
928 | { | |
929 | This::template pcrela_unaligned<64>(view, object, psymval, | |
930 | addend, address); | |
931 | } | |
932 | ||
2615994e DM |
933 | // R_SPARC_H34: (Symbol + Addend) >> 12 |
934 | static inline void | |
935 | h34(unsigned char* view, | |
936 | const Sized_relobj_file<size, big_endian>* object, | |
937 | const Symbol_value<size>* psymval, | |
938 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
939 | { | |
940 | This_insn::template rela<32>(view, 12, 0x003fffff, object, psymval, addend); | |
941 | } | |
942 | ||
f5314dd5 DM |
943 | // R_SPARC_H44: (Symbol + Addend) >> 22 |
944 | static inline void | |
945 | h44(unsigned char* view, | |
6fa2a40b | 946 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
947 | const Symbol_value<size>* psymval, |
948 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
949 | { | |
950 | This_insn::template rela<32>(view, 22, 0x003fffff, object, psymval, addend); | |
951 | } | |
952 | ||
953 | // R_SPARC_M44: ((Symbol + Addend) >> 12) & 0x3ff | |
954 | static inline void | |
955 | m44(unsigned char* view, | |
6fa2a40b | 956 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
957 | const Symbol_value<size>* psymval, |
958 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
959 | { | |
960 | This_insn::template rela<32>(view, 12, 0x000003ff, object, psymval, addend); | |
961 | } | |
962 | ||
963 | // R_SPARC_L44: (Symbol + Addend) & 0xfff | |
964 | static inline void | |
965 | l44(unsigned char* view, | |
6fa2a40b | 966 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
967 | const Symbol_value<size>* psymval, |
968 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
969 | { | |
970 | This_insn::template rela<32>(view, 0, 0x00000fff, object, psymval, addend); | |
971 | } | |
972 | ||
973 | // R_SPARC_HH22: (Symbol + Addend) >> 42 | |
974 | static inline void | |
975 | hh22(unsigned char* view, | |
6fa2a40b | 976 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
977 | const Symbol_value<size>* psymval, |
978 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
979 | { | |
980 | This_insn::template rela<32>(view, 42, 0x003fffff, object, psymval, addend); | |
981 | } | |
982 | ||
983 | // R_SPARC_PC_HH22: (Symbol + Addend - Address) >> 42 | |
984 | static inline void | |
985 | pc_hh22(unsigned char* view, | |
6fa2a40b | 986 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
987 | const Symbol_value<size>* psymval, |
988 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
989 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
990 | { | |
991 | This_insn::template pcrela<32>(view, 42, 0x003fffff, object, | |
992 | psymval, addend, address); | |
993 | } | |
994 | ||
995 | // R_SPARC_HM10: ((Symbol + Addend) >> 32) & 0x3ff | |
996 | static inline void | |
997 | hm10(unsigned char* view, | |
6fa2a40b | 998 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
999 | const Symbol_value<size>* psymval, |
1000 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
1001 | { | |
1002 | This_insn::template rela<32>(view, 32, 0x000003ff, object, psymval, addend); | |
1003 | } | |
1004 | ||
1005 | // R_SPARC_PC_HM10: ((Symbol + Addend - Address) >> 32) & 0x3ff | |
1006 | static inline void | |
1007 | pc_hm10(unsigned char* view, | |
6fa2a40b | 1008 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
1009 | const Symbol_value<size>* psymval, |
1010 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
1011 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
1012 | { | |
1013 | This_insn::template pcrela<32>(view, 32, 0x000003ff, object, | |
1014 | psymval, addend, address); | |
1015 | } | |
1016 | ||
1017 | // R_SPARC_11: (Symbol + Addend) | |
1018 | static inline void | |
1019 | rela32_11(unsigned char* view, | |
6fa2a40b | 1020 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
1021 | const Symbol_value<size>* psymval, |
1022 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
1023 | { | |
1024 | This_insn::template rela<32>(view, 0, 0x000007ff, object, psymval, addend); | |
1025 | } | |
1026 | ||
1027 | // R_SPARC_10: (Symbol + Addend) | |
1028 | static inline void | |
1029 | rela32_10(unsigned char* view, | |
6fa2a40b | 1030 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
1031 | const Symbol_value<size>* psymval, |
1032 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
1033 | { | |
1034 | This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend); | |
1035 | } | |
1036 | ||
1037 | // R_SPARC_7: (Symbol + Addend) | |
1038 | static inline void | |
1039 | rela32_7(unsigned char* view, | |
6fa2a40b | 1040 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
1041 | const Symbol_value<size>* psymval, |
1042 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
1043 | { | |
1044 | This_insn::template rela<32>(view, 0, 0x0000007f, object, psymval, addend); | |
1045 | } | |
1046 | ||
1047 | // R_SPARC_6: (Symbol + Addend) | |
1048 | static inline void | |
1049 | rela32_6(unsigned char* view, | |
6fa2a40b | 1050 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
1051 | const Symbol_value<size>* psymval, |
1052 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
1053 | { | |
1054 | This_insn::template rela<32>(view, 0, 0x0000003f, object, psymval, addend); | |
1055 | } | |
1056 | ||
1057 | // R_SPARC_5: (Symbol + Addend) | |
1058 | static inline void | |
1059 | rela32_5(unsigned char* view, | |
6fa2a40b | 1060 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
1061 | const Symbol_value<size>* psymval, |
1062 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
1063 | { | |
1064 | This_insn::template rela<32>(view, 0, 0x0000001f, object, psymval, addend); | |
1065 | } | |
1066 | ||
1067 | // R_SPARC_TLS_LDO_HIX22: @dtpoff(Symbol + Addend) >> 10 | |
1068 | static inline void | |
1069 | ldo_hix22(unsigned char* view, | |
2ea97941 | 1070 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
f5314dd5 DM |
1071 | typename elfcpp::Elf_types<size>::Elf_Addr addend) |
1072 | { | |
2ea97941 | 1073 | This_insn::hi22(view, value, addend); |
f5314dd5 DM |
1074 | } |
1075 | ||
1076 | // R_SPARC_TLS_LDO_LOX10: @dtpoff(Symbol + Addend) & 0x3ff | |
1077 | static inline void | |
1078 | ldo_lox10(unsigned char* view, | |
2ea97941 | 1079 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
f5314dd5 DM |
1080 | typename elfcpp::Elf_types<size>::Elf_Addr addend) |
1081 | { | |
1082 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
1083 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
1084 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
2ea97941 | 1085 | Valtype reloc = (value + addend); |
f5314dd5 DM |
1086 | |
1087 | val &= ~0x1fff; | |
1088 | reloc &= 0x3ff; | |
1089 | ||
1090 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
1091 | } | |
1092 | ||
1093 | // R_SPARC_TLS_LE_HIX22: (@tpoff(Symbol + Addend) ^ 0xffffffffffffffff) >> 10 | |
1094 | static inline void | |
1095 | hix22(unsigned char* view, | |
2ea97941 | 1096 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
f5314dd5 DM |
1097 | typename elfcpp::Elf_types<size>::Elf_Addr addend) |
1098 | { | |
1099 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
1100 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
1101 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
2ea97941 | 1102 | Valtype reloc = (value + addend); |
f5314dd5 DM |
1103 | |
1104 | val &= ~0x3fffff; | |
1105 | ||
1106 | reloc ^= ~(Valtype)0; | |
1107 | reloc >>= 10; | |
1108 | ||
1109 | reloc &= 0x3fffff; | |
1110 | ||
1111 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
1112 | } | |
1113 | ||
2a1079e8 DM |
1114 | // R_SPARC_GOTDATA_OP_HIX22: @gdopoff(Symbol + Addend) >> 10 |
1115 | static inline void | |
1116 | gdop_hix22(unsigned char* view, | |
9eacb935 | 1117 | typename elfcpp::Elf_types<size>::Elf_Addr value) |
2a1079e8 DM |
1118 | { |
1119 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
1120 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
1121 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
9eacb935 | 1122 | int32_t reloc = static_cast<int32_t>(value); |
2a1079e8 DM |
1123 | |
1124 | val &= ~0x3fffff; | |
1125 | ||
1126 | if (reloc < 0) | |
1127 | reloc ^= ~static_cast<int32_t>(0); | |
1128 | reloc >>= 10; | |
1129 | ||
1130 | reloc &= 0x3fffff; | |
1131 | ||
1132 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
1133 | } | |
1134 | ||
f5314dd5 DM |
1135 | // R_SPARC_HIX22: ((Symbol + Addend) ^ 0xffffffffffffffff) >> 10 |
1136 | static inline void | |
1137 | hix22(unsigned char* view, | |
6fa2a40b | 1138 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
1139 | const Symbol_value<size>* psymval, |
1140 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
1141 | { | |
1142 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
1143 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
1144 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
1145 | Valtype reloc = psymval->value(object, addend); | |
1146 | ||
1147 | val &= ~0x3fffff; | |
1148 | ||
1149 | reloc ^= ~(Valtype)0; | |
1150 | reloc >>= 10; | |
1151 | ||
1152 | reloc &= 0x3fffff; | |
1153 | ||
1154 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
1155 | } | |
1156 | ||
1157 | ||
1158 | // R_SPARC_TLS_LE_LOX10: (@tpoff(Symbol + Addend) & 0x3ff) | 0x1c00 | |
1159 | static inline void | |
1160 | lox10(unsigned char* view, | |
2ea97941 | 1161 | typename elfcpp::Elf_types<size>::Elf_Addr value, |
f5314dd5 DM |
1162 | typename elfcpp::Elf_types<size>::Elf_Addr addend) |
1163 | { | |
1164 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
1165 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
1166 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
2ea97941 | 1167 | Valtype reloc = (value + addend); |
f5314dd5 DM |
1168 | |
1169 | val &= ~0x1fff; | |
1170 | reloc &= 0x3ff; | |
1171 | reloc |= 0x1c00; | |
1172 | ||
1173 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
1174 | } | |
1175 | ||
2a1079e8 DM |
1176 | // R_SPARC_GOTDATA_OP_LOX10: (@gdopoff(Symbol + Addend) & 0x3ff) | 0x1c00 |
1177 | static inline void | |
1178 | gdop_lox10(unsigned char* view, | |
9eacb935 | 1179 | typename elfcpp::Elf_types<size>::Elf_Addr value) |
2a1079e8 DM |
1180 | { |
1181 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
1182 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
1183 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
9eacb935 | 1184 | int32_t reloc = static_cast<int32_t>(value); |
2a1079e8 DM |
1185 | |
1186 | if (reloc < 0) | |
1187 | reloc = (reloc & 0x3ff) | 0x1c00; | |
1188 | else | |
1189 | reloc = (reloc & 0x3ff); | |
1190 | ||
1191 | val &= ~0x1fff; | |
1192 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
1193 | } | |
1194 | ||
f5314dd5 DM |
1195 | // R_SPARC_LOX10: ((Symbol + Addend) & 0x3ff) | 0x1c00 |
1196 | static inline void | |
1197 | lox10(unsigned char* view, | |
6fa2a40b | 1198 | const Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
1199 | const Symbol_value<size>* psymval, |
1200 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
1201 | { | |
1202 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
1203 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
1204 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
1205 | Valtype reloc = psymval->value(object, addend); | |
1206 | ||
1207 | val &= ~0x1fff; | |
1208 | reloc &= 0x3ff; | |
1209 | reloc |= 0x1c00; | |
1210 | ||
1211 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
1212 | } | |
1213 | }; | |
1214 | ||
1215 | // Get the GOT section, creating it if necessary. | |
1216 | ||
1217 | template<int size, bool big_endian> | |
1218 | Output_data_got<size, big_endian>* | |
1219 | Target_sparc<size, big_endian>::got_section(Symbol_table* symtab, | |
1220 | Layout* layout) | |
1221 | { | |
1222 | if (this->got_ == NULL) | |
1223 | { | |
1224 | gold_assert(symtab != NULL && layout != NULL); | |
1225 | ||
1226 | this->got_ = new Output_data_got<size, big_endian>(); | |
1227 | ||
82742395 ILT |
1228 | layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS, |
1229 | (elfcpp::SHF_ALLOC | |
1230 | | elfcpp::SHF_WRITE), | |
22f0da72 | 1231 | this->got_, ORDER_RELRO, true); |
f5314dd5 DM |
1232 | |
1233 | // Define _GLOBAL_OFFSET_TABLE_ at the start of the .got section. | |
1234 | symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
99fff23b | 1235 | Symbol_table::PREDEFINED, |
f5314dd5 DM |
1236 | this->got_, |
1237 | 0, 0, elfcpp::STT_OBJECT, | |
1238 | elfcpp::STB_LOCAL, | |
1239 | elfcpp::STV_HIDDEN, 0, | |
1240 | false, false); | |
1241 | } | |
1242 | ||
1243 | return this->got_; | |
1244 | } | |
1245 | ||
1246 | // Get the dynamic reloc section, creating it if necessary. | |
1247 | ||
1248 | template<int size, bool big_endian> | |
1249 | typename Target_sparc<size, big_endian>::Reloc_section* | |
1250 | Target_sparc<size, big_endian>::rela_dyn_section(Layout* layout) | |
1251 | { | |
1252 | if (this->rela_dyn_ == NULL) | |
1253 | { | |
1254 | gold_assert(layout != NULL); | |
d98bc257 | 1255 | this->rela_dyn_ = new Reloc_section(parameters->options().combreloc()); |
f5314dd5 | 1256 | layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA, |
22f0da72 ILT |
1257 | elfcpp::SHF_ALLOC, this->rela_dyn_, |
1258 | ORDER_DYNAMIC_RELOCS, false); | |
f5314dd5 DM |
1259 | } |
1260 | return this->rela_dyn_; | |
1261 | } | |
1262 | ||
8c2bf391 DM |
1263 | // Get the section to use for IFUNC relocs, creating it if |
1264 | // necessary. These go in .rela.dyn, but only after all other dynamic | |
1265 | // relocations. They need to follow the other dynamic relocations so | |
1266 | // that they can refer to global variables initialized by those | |
1267 | // relocs. | |
1268 | ||
1269 | template<int size, bool big_endian> | |
1270 | typename Target_sparc<size, big_endian>::Reloc_section* | |
1271 | Target_sparc<size, big_endian>::rela_ifunc_section(Layout* layout) | |
1272 | { | |
1273 | if (this->rela_ifunc_ == NULL) | |
1274 | { | |
1275 | // Make sure we have already created the dynamic reloc section. | |
1276 | this->rela_dyn_section(layout); | |
1277 | this->rela_ifunc_ = new Reloc_section(false); | |
1278 | layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA, | |
1279 | elfcpp::SHF_ALLOC, this->rela_ifunc_, | |
1280 | ORDER_DYNAMIC_RELOCS, false); | |
1281 | gold_assert(this->rela_dyn_->output_section() | |
1282 | == this->rela_ifunc_->output_section()); | |
1283 | } | |
1284 | return this->rela_ifunc_; | |
1285 | } | |
1286 | ||
f5314dd5 DM |
1287 | // A class to handle the PLT data. |
1288 | ||
1289 | template<int size, bool big_endian> | |
1290 | class Output_data_plt_sparc : public Output_section_data | |
1291 | { | |
1292 | public: | |
1293 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
1294 | size, big_endian> Reloc_section; | |
1295 | ||
1296 | Output_data_plt_sparc(Layout*); | |
1297 | ||
1298 | // Add an entry to the PLT. | |
8c2bf391 DM |
1299 | void add_entry(Symbol_table* symtab, Layout* layout, Symbol* gsym); |
1300 | ||
1301 | // Add an entry to the PLT for a local STT_GNU_IFUNC symbol. | |
1302 | unsigned int | |
1303 | add_local_ifunc_entry(Symbol_table*, Layout*, | |
1304 | Sized_relobj_file<size, big_endian>* relobj, | |
1305 | unsigned int local_sym_index); | |
f5314dd5 DM |
1306 | |
1307 | // Return the .rela.plt section data. | |
1308 | const Reloc_section* rel_plt() const | |
1309 | { | |
1310 | return this->rel_; | |
1311 | } | |
1312 | ||
8c2bf391 DM |
1313 | // Return where the IFUNC relocations should go. |
1314 | Reloc_section* | |
1315 | rela_ifunc(Symbol_table*, Layout*); | |
1316 | ||
1317 | void | |
1318 | emit_pending_ifunc_relocs(); | |
1319 | ||
1320 | // Return whether we created a section for IFUNC relocations. | |
1321 | bool | |
1322 | has_ifunc_section() const | |
1323 | { return this->ifunc_rel_ != NULL; } | |
1324 | ||
0e70b911 CC |
1325 | // Return the number of PLT entries. |
1326 | unsigned int | |
1327 | entry_count() const | |
8c2bf391 | 1328 | { return this->count_ + this->ifunc_count_; } |
0e70b911 CC |
1329 | |
1330 | // Return the offset of the first non-reserved PLT entry. | |
1331 | static unsigned int | |
1332 | first_plt_entry_offset() | |
1333 | { return 4 * base_plt_entry_size; } | |
1334 | ||
1335 | // Return the size of a PLT entry. | |
1336 | static unsigned int | |
1337 | get_plt_entry_size() | |
1338 | { return base_plt_entry_size; } | |
1339 | ||
8c2bf391 DM |
1340 | // Return the PLT address to use for a global symbol. |
1341 | uint64_t | |
1342 | address_for_global(const Symbol*); | |
1343 | ||
1344 | // Return the PLT address to use for a local symbol. | |
1345 | uint64_t | |
1346 | address_for_local(const Relobj*, unsigned int symndx); | |
1347 | ||
f5314dd5 DM |
1348 | protected: |
1349 | void do_adjust_output_section(Output_section* os); | |
1350 | ||
7d9e3d98 ILT |
1351 | // Write to a map file. |
1352 | void | |
1353 | do_print_to_mapfile(Mapfile* mapfile) const | |
1354 | { mapfile->print_output_data(this, _("** PLT")); } | |
1355 | ||
f5314dd5 DM |
1356 | private: |
1357 | // The size of an entry in the PLT. | |
1358 | static const int base_plt_entry_size = (size == 32 ? 12 : 32); | |
1359 | ||
1360 | static const unsigned int plt_entries_per_block = 160; | |
1361 | static const unsigned int plt_insn_chunk_size = 24; | |
1362 | static const unsigned int plt_pointer_chunk_size = 8; | |
1363 | static const unsigned int plt_block_size = | |
1364 | (plt_entries_per_block | |
1365 | * (plt_insn_chunk_size + plt_pointer_chunk_size)); | |
1366 | ||
8c2bf391 DM |
1367 | section_offset_type |
1368 | plt_index_to_offset(unsigned int index) | |
f5314dd5 | 1369 | { |
8c2bf391 | 1370 | section_offset_type offset; |
f5314dd5 | 1371 | |
8c2bf391 DM |
1372 | if (size == 32 || index < 32768) |
1373 | offset = index * base_plt_entry_size; | |
f5314dd5 DM |
1374 | else |
1375 | { | |
8c2bf391 | 1376 | unsigned int ext_index = index - 32768; |
f5314dd5 | 1377 | |
8c2bf391 DM |
1378 | offset = (32768 * base_plt_entry_size) |
1379 | + ((ext_index / plt_entries_per_block) | |
1380 | * plt_block_size) | |
1381 | + ((ext_index % plt_entries_per_block) | |
1382 | * plt_insn_chunk_size); | |
f5314dd5 | 1383 | } |
8c2bf391 DM |
1384 | return offset; |
1385 | } | |
1386 | ||
1387 | // Set the final size. | |
1388 | void | |
1389 | set_final_data_size() | |
1390 | { | |
1391 | unsigned int full_count = this->entry_count() + 4; | |
1392 | unsigned int extra = (size == 32 ? 4 : 0); | |
1393 | section_offset_type sz = plt_index_to_offset(full_count) + extra; | |
1394 | ||
1395 | return this->set_data_size(sz); | |
f5314dd5 DM |
1396 | } |
1397 | ||
1398 | // Write out the PLT data. | |
1399 | void | |
1400 | do_write(Output_file*); | |
1401 | ||
8c2bf391 DM |
1402 | struct Global_ifunc |
1403 | { | |
1404 | Reloc_section* rel; | |
1405 | Symbol* gsym; | |
1406 | unsigned int plt_index; | |
1407 | }; | |
1408 | ||
1409 | struct Local_ifunc | |
1410 | { | |
1411 | Reloc_section* rel; | |
1412 | Sized_relobj_file<size, big_endian>* object; | |
1413 | unsigned int local_sym_index; | |
1414 | unsigned int plt_index; | |
1415 | }; | |
1416 | ||
f5314dd5 DM |
1417 | // The reloc section. |
1418 | Reloc_section* rel_; | |
8c2bf391 DM |
1419 | // The IFUNC relocations, if necessary. These must follow the |
1420 | // regular relocations. | |
1421 | Reloc_section* ifunc_rel_; | |
f5314dd5 DM |
1422 | // The number of PLT entries. |
1423 | unsigned int count_; | |
8c2bf391 DM |
1424 | // The number of PLT entries for IFUNC symbols. |
1425 | unsigned int ifunc_count_; | |
1426 | // Global STT_GNU_IFUNC symbols. | |
1427 | std::vector<Global_ifunc> global_ifuncs_; | |
1428 | // Local STT_GNU_IFUNC symbols. | |
1429 | std::vector<Local_ifunc> local_ifuncs_; | |
f5314dd5 DM |
1430 | }; |
1431 | ||
4f2a9edd ILT |
1432 | // Define the constants as required by C++ standard. |
1433 | ||
1434 | template<int size, bool big_endian> | |
1435 | const int Output_data_plt_sparc<size, big_endian>::base_plt_entry_size; | |
1436 | ||
1437 | template<int size, bool big_endian> | |
1438 | const unsigned int | |
1439 | Output_data_plt_sparc<size, big_endian>::plt_entries_per_block; | |
1440 | ||
1441 | template<int size, bool big_endian> | |
1442 | const unsigned int Output_data_plt_sparc<size, big_endian>::plt_insn_chunk_size; | |
1443 | ||
1444 | template<int size, bool big_endian> | |
1445 | const unsigned int | |
1446 | Output_data_plt_sparc<size, big_endian>::plt_pointer_chunk_size; | |
1447 | ||
1448 | template<int size, bool big_endian> | |
1449 | const unsigned int Output_data_plt_sparc<size, big_endian>::plt_block_size; | |
1450 | ||
f5314dd5 DM |
1451 | // Create the PLT section. The ordinary .got section is an argument, |
1452 | // since we need to refer to the start. | |
1453 | ||
1454 | template<int size, bool big_endian> | |
1455 | Output_data_plt_sparc<size, big_endian>::Output_data_plt_sparc(Layout* layout) | |
8c2bf391 DM |
1456 | : Output_section_data(size == 32 ? 4 : 8), ifunc_rel_(NULL), |
1457 | count_(0), ifunc_count_(0), global_ifuncs_(), local_ifuncs_() | |
f5314dd5 | 1458 | { |
d98bc257 | 1459 | this->rel_ = new Reloc_section(false); |
f5314dd5 | 1460 | layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA, |
22f0da72 ILT |
1461 | elfcpp::SHF_ALLOC, this->rel_, |
1462 | ORDER_DYNAMIC_PLT_RELOCS, false); | |
f5314dd5 DM |
1463 | } |
1464 | ||
1465 | template<int size, bool big_endian> | |
1466 | void | |
1467 | Output_data_plt_sparc<size, big_endian>::do_adjust_output_section(Output_section* os) | |
1468 | { | |
1469 | os->set_entsize(0); | |
1470 | } | |
1471 | ||
1472 | // Add an entry to the PLT. | |
1473 | ||
1474 | template<int size, bool big_endian> | |
1475 | void | |
8c2bf391 DM |
1476 | Output_data_plt_sparc<size, big_endian>::add_entry(Symbol_table* symtab, |
1477 | Layout* layout, | |
1478 | Symbol* gsym) | |
f5314dd5 DM |
1479 | { |
1480 | gold_assert(!gsym->has_plt_offset()); | |
1481 | ||
f5314dd5 | 1482 | section_offset_type plt_offset; |
8c2bf391 | 1483 | unsigned int index; |
f5314dd5 | 1484 | |
8c2bf391 DM |
1485 | if (gsym->type() == elfcpp::STT_GNU_IFUNC |
1486 | && gsym->can_use_relative_reloc(false)) | |
1487 | { | |
1488 | index = this->ifunc_count_; | |
1489 | plt_offset = plt_index_to_offset(index); | |
1490 | gsym->set_plt_offset(plt_offset); | |
1491 | ++this->ifunc_count_; | |
1492 | Reloc_section* rel = this->rela_ifunc(symtab, layout); | |
1493 | ||
1494 | struct Global_ifunc gi; | |
1495 | gi.rel = rel; | |
1496 | gi.gsym = gsym; | |
1497 | gi.plt_index = index; | |
1498 | this->global_ifuncs_.push_back(gi); | |
1499 | } | |
f5314dd5 DM |
1500 | else |
1501 | { | |
8c2bf391 DM |
1502 | plt_offset = plt_index_to_offset(this->count_ + 4); |
1503 | gsym->set_plt_offset(plt_offset); | |
1504 | ++this->count_; | |
1505 | gsym->set_needs_dynsym_entry(); | |
1506 | this->rel_->add_global(gsym, elfcpp::R_SPARC_JMP_SLOT, this, | |
1507 | plt_offset, 0); | |
1508 | } | |
f5314dd5 | 1509 | |
8c2bf391 DM |
1510 | // Note that we don't need to save the symbol. The contents of the |
1511 | // PLT are independent of which symbols are used. The symbols only | |
1512 | // appear in the relocations. | |
1513 | } | |
1514 | ||
1515 | template<int size, bool big_endian> | |
1516 | unsigned int | |
1517 | Output_data_plt_sparc<size, big_endian>::add_local_ifunc_entry( | |
1518 | Symbol_table* symtab, | |
1519 | Layout* layout, | |
1520 | Sized_relobj_file<size, big_endian>* relobj, | |
1521 | unsigned int local_sym_index) | |
1522 | { | |
1523 | unsigned int index = this->ifunc_count_; | |
1524 | section_offset_type plt_offset; | |
1525 | ||
1526 | plt_offset = plt_index_to_offset(index); | |
1527 | ++this->ifunc_count_; | |
1528 | ||
1529 | Reloc_section* rel = this->rela_ifunc(symtab, layout); | |
1530 | ||
1531 | struct Local_ifunc li; | |
1532 | li.rel = rel; | |
1533 | li.object = relobj; | |
1534 | li.local_sym_index = local_sym_index; | |
1535 | li.plt_index = index; | |
1536 | this->local_ifuncs_.push_back(li); | |
1537 | ||
1538 | return plt_offset; | |
1539 | } | |
1540 | ||
1541 | // Emit any pending IFUNC plt relocations. | |
1542 | ||
1543 | template<int size, bool big_endian> | |
1544 | void | |
1545 | Output_data_plt_sparc<size, big_endian>::emit_pending_ifunc_relocs() | |
1546 | { | |
1547 | // Emit any pending IFUNC relocs. | |
1548 | for (typename std::vector<Global_ifunc>::const_iterator p = | |
1549 | this->global_ifuncs_.begin(); | |
1550 | p != this->global_ifuncs_.end(); | |
1551 | ++p) | |
1552 | { | |
1553 | section_offset_type plt_offset; | |
1554 | unsigned int index; | |
1555 | ||
1556 | index = this->count_ + p->plt_index + 4; | |
1557 | plt_offset = this->plt_index_to_offset(index); | |
1558 | p->rel->add_symbolless_global_addend(p->gsym, elfcpp::R_SPARC_JMP_IREL, | |
1559 | this, plt_offset, 0); | |
1560 | } | |
1561 | ||
1562 | for (typename std::vector<Local_ifunc>::const_iterator p = | |
1563 | this->local_ifuncs_.begin(); | |
1564 | p != this->local_ifuncs_.end(); | |
1565 | ++p) | |
1566 | { | |
1567 | section_offset_type plt_offset; | |
1568 | unsigned int index; | |
1569 | ||
1570 | index = this->count_ + p->plt_index + 4; | |
1571 | plt_offset = this->plt_index_to_offset(index); | |
1572 | p->rel->add_symbolless_local_addend(p->object, p->local_sym_index, | |
1573 | elfcpp::R_SPARC_JMP_IREL, | |
1574 | this, plt_offset, 0); | |
f5314dd5 | 1575 | } |
8c2bf391 | 1576 | } |
f5314dd5 | 1577 | |
8c2bf391 DM |
1578 | // Return where the IFUNC relocations should go in the PLT. These |
1579 | // follow the non-IFUNC relocations. | |
f5314dd5 | 1580 | |
8c2bf391 DM |
1581 | template<int size, bool big_endian> |
1582 | typename Output_data_plt_sparc<size, big_endian>::Reloc_section* | |
1583 | Output_data_plt_sparc<size, big_endian>::rela_ifunc( | |
1584 | Symbol_table* symtab, | |
1585 | Layout* layout) | |
1586 | { | |
1587 | if (this->ifunc_rel_ == NULL) | |
1588 | { | |
1589 | this->ifunc_rel_ = new Reloc_section(false); | |
1590 | layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA, | |
1591 | elfcpp::SHF_ALLOC, this->ifunc_rel_, | |
1592 | ORDER_DYNAMIC_PLT_RELOCS, false); | |
1593 | gold_assert(this->ifunc_rel_->output_section() | |
1594 | == this->rel_->output_section()); | |
1595 | ||
1596 | if (parameters->doing_static_link()) | |
1597 | { | |
1598 | // A statically linked executable will only have a .rel.plt | |
1599 | // section to hold R_SPARC_IRELATIVE and R_SPARC_JMP_IREL | |
1600 | // relocs for STT_GNU_IFUNC symbols. The library will use | |
1601 | // these symbols to locate the IRELATIVE and JMP_IREL relocs | |
1602 | // at program startup time. | |
1603 | symtab->define_in_output_data("__rela_iplt_start", NULL, | |
1604 | Symbol_table::PREDEFINED, | |
1605 | this->ifunc_rel_, 0, 0, | |
1606 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
1607 | elfcpp::STV_HIDDEN, 0, false, true); | |
1608 | symtab->define_in_output_data("__rela_iplt_end", NULL, | |
1609 | Symbol_table::PREDEFINED, | |
1610 | this->ifunc_rel_, 0, 0, | |
1611 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
1612 | elfcpp::STV_HIDDEN, 0, true, true); | |
1613 | } | |
1614 | } | |
1615 | return this->ifunc_rel_; | |
1616 | } | |
f5314dd5 | 1617 | |
8c2bf391 | 1618 | // Return the PLT address to use for a global symbol. |
f5314dd5 | 1619 | |
8c2bf391 DM |
1620 | template<int size, bool big_endian> |
1621 | uint64_t | |
1622 | Output_data_plt_sparc<size, big_endian>::address_for_global(const Symbol* gsym) | |
1623 | { | |
1624 | uint64_t offset = 0; | |
1625 | if (gsym->type() == elfcpp::STT_GNU_IFUNC | |
1626 | && gsym->can_use_relative_reloc(false)) | |
1627 | offset = plt_index_to_offset(this->count_ + 4); | |
19fec8c1 | 1628 | return this->address() + offset + gsym->plt_offset(); |
8c2bf391 DM |
1629 | } |
1630 | ||
1631 | // Return the PLT address to use for a local symbol. These are always | |
1632 | // IRELATIVE relocs. | |
1633 | ||
1634 | template<int size, bool big_endian> | |
1635 | uint64_t | |
1636 | Output_data_plt_sparc<size, big_endian>::address_for_local( | |
19fec8c1 AM |
1637 | const Relobj* object, |
1638 | unsigned int r_sym) | |
8c2bf391 | 1639 | { |
19fec8c1 AM |
1640 | return (this->address() |
1641 | + plt_index_to_offset(this->count_ + 4) | |
1642 | + object->local_plt_offset(r_sym)); | |
f5314dd5 DM |
1643 | } |
1644 | ||
1645 | static const unsigned int sparc_nop = 0x01000000; | |
1646 | static const unsigned int sparc_sethi_g1 = 0x03000000; | |
1647 | static const unsigned int sparc_branch_always = 0x30800000; | |
1648 | static const unsigned int sparc_branch_always_pt = 0x30680000; | |
1649 | static const unsigned int sparc_mov = 0x80100000; | |
1650 | static const unsigned int sparc_mov_g0_o0 = 0x90100000; | |
1651 | static const unsigned int sparc_mov_o7_g5 = 0x8a10000f; | |
1652 | static const unsigned int sparc_call_plus_8 = 0x40000002; | |
1653 | static const unsigned int sparc_ldx_o7_imm_g1 = 0xc25be000; | |
1654 | static const unsigned int sparc_jmpl_o7_g1_g1 = 0x83c3c001; | |
1655 | static const unsigned int sparc_mov_g5_o7 = 0x9e100005; | |
1656 | ||
1657 | // Write out the PLT. | |
1658 | ||
1659 | template<int size, bool big_endian> | |
1660 | void | |
1661 | Output_data_plt_sparc<size, big_endian>::do_write(Output_file* of) | |
1662 | { | |
2ea97941 | 1663 | const off_t offset = this->offset(); |
f5314dd5 DM |
1664 | const section_size_type oview_size = |
1665 | convert_to_section_size_type(this->data_size()); | |
2ea97941 | 1666 | unsigned char* const oview = of->get_output_view(offset, oview_size); |
f5314dd5 DM |
1667 | unsigned char* pov = oview; |
1668 | ||
1669 | memset(pov, 0, base_plt_entry_size * 4); | |
8c2bf391 | 1670 | pov += this->first_plt_entry_offset(); |
f5314dd5 DM |
1671 | |
1672 | unsigned int plt_offset = base_plt_entry_size * 4; | |
8c2bf391 | 1673 | const unsigned int count = this->entry_count(); |
f5314dd5 DM |
1674 | |
1675 | if (size == 64) | |
1676 | { | |
1677 | unsigned int limit; | |
1678 | ||
1679 | limit = (count > 32768 ? 32768 : count); | |
1680 | ||
1681 | for (unsigned int i = 0; i < limit; ++i) | |
1682 | { | |
1683 | elfcpp::Swap<32, true>::writeval(pov + 0x00, | |
1684 | sparc_sethi_g1 + plt_offset); | |
1685 | elfcpp::Swap<32, true>::writeval(pov + 0x04, | |
1686 | sparc_branch_always_pt + | |
1687 | (((base_plt_entry_size - | |
1688 | (plt_offset + 4)) >> 2) & | |
1689 | 0x7ffff)); | |
1690 | elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop); | |
1691 | elfcpp::Swap<32, true>::writeval(pov + 0x0c, sparc_nop); | |
1692 | elfcpp::Swap<32, true>::writeval(pov + 0x10, sparc_nop); | |
1693 | elfcpp::Swap<32, true>::writeval(pov + 0x14, sparc_nop); | |
1694 | elfcpp::Swap<32, true>::writeval(pov + 0x18, sparc_nop); | |
1695 | elfcpp::Swap<32, true>::writeval(pov + 0x1c, sparc_nop); | |
1696 | ||
1697 | pov += base_plt_entry_size; | |
1698 | plt_offset += base_plt_entry_size; | |
1699 | } | |
1700 | ||
1701 | if (count > 32768) | |
1702 | { | |
1703 | unsigned int ext_cnt = count - 32768; | |
1704 | unsigned int blks = ext_cnt / plt_entries_per_block; | |
1705 | ||
1706 | for (unsigned int i = 0; i < blks; ++i) | |
1707 | { | |
1708 | unsigned int data_off = (plt_entries_per_block | |
1709 | * plt_insn_chunk_size) - 4; | |
1710 | ||
1711 | for (unsigned int j = 0; j < plt_entries_per_block; ++j) | |
1712 | { | |
1713 | elfcpp::Swap<32, true>::writeval(pov + 0x00, | |
1714 | sparc_mov_o7_g5); | |
1715 | elfcpp::Swap<32, true>::writeval(pov + 0x04, | |
1716 | sparc_call_plus_8); | |
1717 | elfcpp::Swap<32, true>::writeval(pov + 0x08, | |
1718 | sparc_nop); | |
1719 | elfcpp::Swap<32, true>::writeval(pov + 0x0c, | |
1720 | sparc_ldx_o7_imm_g1 + | |
1721 | (data_off & 0x1fff)); | |
1722 | elfcpp::Swap<32, true>::writeval(pov + 0x10, | |
1723 | sparc_jmpl_o7_g1_g1); | |
1724 | elfcpp::Swap<32, true>::writeval(pov + 0x14, | |
1725 | sparc_mov_g5_o7); | |
1726 | ||
1727 | elfcpp::Swap<64, big_endian>::writeval( | |
1728 | pov + 0x4 + data_off, | |
1729 | (elfcpp::Elf_Xword) (oview - (pov + 0x04))); | |
1730 | ||
1731 | pov += plt_insn_chunk_size; | |
1732 | data_off -= 16; | |
1733 | } | |
1734 | } | |
1735 | ||
1736 | unsigned int sub_blk_cnt = ext_cnt % plt_entries_per_block; | |
1737 | for (unsigned int i = 0; i < sub_blk_cnt; ++i) | |
1738 | { | |
1739 | unsigned int data_off = (sub_blk_cnt | |
1740 | * plt_insn_chunk_size) - 4; | |
1741 | ||
1742 | for (unsigned int j = 0; j < plt_entries_per_block; ++j) | |
1743 | { | |
1744 | elfcpp::Swap<32, true>::writeval(pov + 0x00, | |
1745 | sparc_mov_o7_g5); | |
1746 | elfcpp::Swap<32, true>::writeval(pov + 0x04, | |
1747 | sparc_call_plus_8); | |
1748 | elfcpp::Swap<32, true>::writeval(pov + 0x08, | |
1749 | sparc_nop); | |
1750 | elfcpp::Swap<32, true>::writeval(pov + 0x0c, | |
1751 | sparc_ldx_o7_imm_g1 + | |
1752 | (data_off & 0x1fff)); | |
1753 | elfcpp::Swap<32, true>::writeval(pov + 0x10, | |
1754 | sparc_jmpl_o7_g1_g1); | |
1755 | elfcpp::Swap<32, true>::writeval(pov + 0x14, | |
1756 | sparc_mov_g5_o7); | |
1757 | ||
1758 | elfcpp::Swap<64, big_endian>::writeval( | |
1759 | pov + 0x4 + data_off, | |
1760 | (elfcpp::Elf_Xword) (oview - (pov + 0x04))); | |
1761 | ||
1762 | pov += plt_insn_chunk_size; | |
1763 | data_off -= 16; | |
1764 | } | |
1765 | } | |
1766 | } | |
1767 | } | |
1768 | else | |
1769 | { | |
1770 | for (unsigned int i = 0; i < count; ++i) | |
1771 | { | |
1772 | elfcpp::Swap<32, true>::writeval(pov + 0x00, | |
1773 | sparc_sethi_g1 + plt_offset); | |
1774 | elfcpp::Swap<32, true>::writeval(pov + 0x04, | |
1775 | sparc_branch_always + | |
1776 | (((- (plt_offset + 4)) >> 2) & | |
1777 | 0x003fffff)); | |
1778 | elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop); | |
1779 | ||
1780 | pov += base_plt_entry_size; | |
1781 | plt_offset += base_plt_entry_size; | |
1782 | } | |
1783 | ||
1784 | elfcpp::Swap<32, true>::writeval(pov, sparc_nop); | |
1785 | pov += 4; | |
1786 | } | |
1787 | ||
1788 | gold_assert(static_cast<section_size_type>(pov - oview) == oview_size); | |
1789 | ||
2ea97941 | 1790 | of->write_output_view(offset, oview_size, oview); |
f5314dd5 DM |
1791 | } |
1792 | ||
8c2bf391 DM |
1793 | // Create the PLT section. |
1794 | ||
1795 | template<int size, bool big_endian> | |
1796 | void | |
1797 | Target_sparc<size, big_endian>::make_plt_section(Symbol_table* symtab, | |
1798 | Layout* layout) | |
1799 | { | |
1800 | // Create the GOT sections first. | |
1801 | this->got_section(symtab, layout); | |
1802 | ||
1803 | // Ensure that .rela.dyn always appears before .rela.plt This is | |
1804 | // necessary due to how, on Sparc and some other targets, .rela.dyn | |
1805 | // needs to include .rela.plt in it's range. | |
1806 | this->rela_dyn_section(layout); | |
1807 | ||
1808 | this->plt_ = new Output_data_plt_sparc<size, big_endian>(layout); | |
1809 | layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS, | |
1810 | (elfcpp::SHF_ALLOC | |
1811 | | elfcpp::SHF_EXECINSTR | |
1812 | | elfcpp::SHF_WRITE), | |
1813 | this->plt_, ORDER_NON_RELRO_FIRST, false); | |
1814 | ||
1815 | // Define _PROCEDURE_LINKAGE_TABLE_ at the start of the .plt section. | |
1816 | symtab->define_in_output_data("_PROCEDURE_LINKAGE_TABLE_", NULL, | |
1817 | Symbol_table::PREDEFINED, | |
1818 | this->plt_, | |
1819 | 0, 0, elfcpp::STT_OBJECT, | |
1820 | elfcpp::STB_LOCAL, | |
1821 | elfcpp::STV_HIDDEN, 0, | |
1822 | false, false); | |
1823 | } | |
1824 | ||
f5314dd5 DM |
1825 | // Create a PLT entry for a global symbol. |
1826 | ||
1827 | template<int size, bool big_endian> | |
1828 | void | |
1829 | Target_sparc<size, big_endian>::make_plt_entry(Symbol_table* symtab, | |
1830 | Layout* layout, | |
1831 | Symbol* gsym) | |
1832 | { | |
1833 | if (gsym->has_plt_offset()) | |
1834 | return; | |
1835 | ||
1836 | if (this->plt_ == NULL) | |
8c2bf391 | 1837 | this->make_plt_section(symtab, layout); |
f5314dd5 | 1838 | |
8c2bf391 DM |
1839 | this->plt_->add_entry(symtab, layout, gsym); |
1840 | } | |
f5314dd5 | 1841 | |
8c2bf391 | 1842 | // Make a PLT entry for a local STT_GNU_IFUNC symbol. |
f5314dd5 | 1843 | |
8c2bf391 DM |
1844 | template<int size, bool big_endian> |
1845 | void | |
1846 | Target_sparc<size, big_endian>::make_local_ifunc_plt_entry( | |
1847 | Symbol_table* symtab, | |
1848 | Layout* layout, | |
1849 | Sized_relobj_file<size, big_endian>* relobj, | |
1850 | unsigned int local_sym_index) | |
1851 | { | |
1852 | if (relobj->local_has_plt_offset(local_sym_index)) | |
1853 | return; | |
1854 | if (this->plt_ == NULL) | |
1855 | this->make_plt_section(symtab, layout); | |
1856 | unsigned int plt_offset = this->plt_->add_local_ifunc_entry(symtab, layout, | |
1857 | relobj, | |
1858 | local_sym_index); | |
1859 | relobj->set_local_plt_offset(local_sym_index, plt_offset); | |
f5314dd5 DM |
1860 | } |
1861 | ||
0e70b911 CC |
1862 | // Return the number of entries in the PLT. |
1863 | ||
1864 | template<int size, bool big_endian> | |
1865 | unsigned int | |
1866 | Target_sparc<size, big_endian>::plt_entry_count() const | |
1867 | { | |
1868 | if (this->plt_ == NULL) | |
1869 | return 0; | |
1870 | return this->plt_->entry_count(); | |
1871 | } | |
1872 | ||
1873 | // Return the offset of the first non-reserved PLT entry. | |
1874 | ||
1875 | template<int size, bool big_endian> | |
1876 | unsigned int | |
1877 | Target_sparc<size, big_endian>::first_plt_entry_offset() const | |
1878 | { | |
1879 | return Output_data_plt_sparc<size, big_endian>::first_plt_entry_offset(); | |
1880 | } | |
1881 | ||
1882 | // Return the size of each PLT entry. | |
1883 | ||
1884 | template<int size, bool big_endian> | |
1885 | unsigned int | |
1886 | Target_sparc<size, big_endian>::plt_entry_size() const | |
1887 | { | |
1888 | return Output_data_plt_sparc<size, big_endian>::get_plt_entry_size(); | |
1889 | } | |
1890 | ||
f5314dd5 DM |
1891 | // Create a GOT entry for the TLS module index. |
1892 | ||
1893 | template<int size, bool big_endian> | |
1894 | unsigned int | |
6fa2a40b CC |
1895 | Target_sparc<size, big_endian>::got_mod_index_entry( |
1896 | Symbol_table* symtab, | |
1897 | Layout* layout, | |
1898 | Sized_relobj_file<size, big_endian>* object) | |
f5314dd5 DM |
1899 | { |
1900 | if (this->got_mod_index_offset_ == -1U) | |
1901 | { | |
1902 | gold_assert(symtab != NULL && layout != NULL && object != NULL); | |
1903 | Reloc_section* rela_dyn = this->rela_dyn_section(layout); | |
1904 | Output_data_got<size, big_endian>* got; | |
1905 | unsigned int got_offset; | |
1906 | ||
1907 | got = this->got_section(symtab, layout); | |
1908 | got_offset = got->add_constant(0); | |
1909 | rela_dyn->add_local(object, 0, | |
1910 | (size == 64 ? | |
1911 | elfcpp::R_SPARC_TLS_DTPMOD64 : | |
1912 | elfcpp::R_SPARC_TLS_DTPMOD32), got, | |
1913 | got_offset, 0); | |
1914 | got->add_constant(0); | |
1915 | this->got_mod_index_offset_ = got_offset; | |
1916 | } | |
1917 | return this->got_mod_index_offset_; | |
1918 | } | |
1919 | ||
f5314dd5 DM |
1920 | // Optimize the TLS relocation type based on what we know about the |
1921 | // symbol. IS_FINAL is true if the final address of this symbol is | |
1922 | // known at link time. | |
1923 | ||
1924 | static tls::Tls_optimization | |
1925 | optimize_tls_reloc(bool is_final, int r_type) | |
1926 | { | |
1927 | // If we are generating a shared library, then we can't do anything | |
1928 | // in the linker. | |
1929 | if (parameters->options().shared()) | |
1930 | return tls::TLSOPT_NONE; | |
1931 | ||
1932 | switch (r_type) | |
1933 | { | |
1934 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
1935 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
1936 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
1937 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
1938 | // These are General-Dynamic which permits fully general TLS | |
1939 | // access. Since we know that we are generating an executable, | |
1940 | // we can convert this to Initial-Exec. If we also know that | |
1941 | // this is a local symbol, we can further switch to Local-Exec. | |
1942 | if (is_final) | |
1943 | return tls::TLSOPT_TO_LE; | |
1944 | return tls::TLSOPT_TO_IE; | |
1945 | ||
1946 | case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic | |
1947 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
1948 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
1949 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
1950 | // This is Local-Dynamic, which refers to a local symbol in the | |
1951 | // dynamic TLS block. Since we know that we generating an | |
1952 | // executable, we can switch to Local-Exec. | |
1953 | return tls::TLSOPT_TO_LE; | |
1954 | ||
1955 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
1956 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
1957 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
1958 | // Another type of Local-Dynamic relocation. | |
1959 | return tls::TLSOPT_TO_LE; | |
1960 | ||
1961 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
1962 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
1963 | case elfcpp::R_SPARC_TLS_IE_LD: | |
1964 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
9efe6174 | 1965 | case elfcpp::R_SPARC_TLS_IE_ADD: |
f5314dd5 DM |
1966 | // These are Initial-Exec relocs which get the thread offset |
1967 | // from the GOT. If we know that we are linking against the | |
1968 | // local symbol, we can switch to Local-Exec, which links the | |
1969 | // thread offset into the instruction. | |
1970 | if (is_final) | |
1971 | return tls::TLSOPT_TO_LE; | |
1972 | return tls::TLSOPT_NONE; | |
1973 | ||
1974 | case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec | |
1975 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
1976 | // When we already have Local-Exec, there is nothing further we | |
1977 | // can do. | |
1978 | return tls::TLSOPT_NONE; | |
1979 | ||
1980 | default: | |
1981 | gold_unreachable(); | |
1982 | } | |
1983 | } | |
1984 | ||
95a2c8d6 RS |
1985 | // Get the Reference_flags for a particular relocation. |
1986 | ||
1987 | template<int size, bool big_endian> | |
1988 | int | |
1989 | Target_sparc<size, big_endian>::Scan::get_reference_flags(unsigned int r_type) | |
1990 | { | |
1991 | r_type &= 0xff; | |
1992 | switch (r_type) | |
1993 | { | |
1994 | case elfcpp::R_SPARC_NONE: | |
1995 | case elfcpp::R_SPARC_REGISTER: | |
1996 | case elfcpp::R_SPARC_GNU_VTINHERIT: | |
1997 | case elfcpp::R_SPARC_GNU_VTENTRY: | |
1998 | // No symbol reference. | |
1999 | return 0; | |
2000 | ||
2001 | case elfcpp::R_SPARC_UA64: | |
2002 | case elfcpp::R_SPARC_64: | |
2003 | case elfcpp::R_SPARC_HIX22: | |
2004 | case elfcpp::R_SPARC_LOX10: | |
2615994e | 2005 | case elfcpp::R_SPARC_H34: |
95a2c8d6 RS |
2006 | case elfcpp::R_SPARC_H44: |
2007 | case elfcpp::R_SPARC_M44: | |
2008 | case elfcpp::R_SPARC_L44: | |
2009 | case elfcpp::R_SPARC_HH22: | |
2010 | case elfcpp::R_SPARC_HM10: | |
2011 | case elfcpp::R_SPARC_LM22: | |
2012 | case elfcpp::R_SPARC_HI22: | |
2013 | case elfcpp::R_SPARC_LO10: | |
2014 | case elfcpp::R_SPARC_OLO10: | |
2015 | case elfcpp::R_SPARC_UA32: | |
2016 | case elfcpp::R_SPARC_32: | |
2017 | case elfcpp::R_SPARC_UA16: | |
2018 | case elfcpp::R_SPARC_16: | |
2019 | case elfcpp::R_SPARC_11: | |
2020 | case elfcpp::R_SPARC_10: | |
2021 | case elfcpp::R_SPARC_8: | |
2022 | case elfcpp::R_SPARC_7: | |
2023 | case elfcpp::R_SPARC_6: | |
2024 | case elfcpp::R_SPARC_5: | |
2025 | return Symbol::ABSOLUTE_REF; | |
2026 | ||
2027 | case elfcpp::R_SPARC_DISP8: | |
2028 | case elfcpp::R_SPARC_DISP16: | |
2029 | case elfcpp::R_SPARC_DISP32: | |
2030 | case elfcpp::R_SPARC_DISP64: | |
2031 | case elfcpp::R_SPARC_PC_HH22: | |
2032 | case elfcpp::R_SPARC_PC_HM10: | |
2033 | case elfcpp::R_SPARC_PC_LM22: | |
2034 | case elfcpp::R_SPARC_PC10: | |
2035 | case elfcpp::R_SPARC_PC22: | |
2036 | case elfcpp::R_SPARC_WDISP30: | |
2037 | case elfcpp::R_SPARC_WDISP22: | |
2038 | case elfcpp::R_SPARC_WDISP19: | |
2039 | case elfcpp::R_SPARC_WDISP16: | |
2615994e | 2040 | case elfcpp::R_SPARC_WDISP10: |
95a2c8d6 RS |
2041 | return Symbol::RELATIVE_REF; |
2042 | ||
2043 | case elfcpp::R_SPARC_PLT64: | |
2044 | case elfcpp::R_SPARC_PLT32: | |
2045 | case elfcpp::R_SPARC_HIPLT22: | |
2046 | case elfcpp::R_SPARC_LOPLT10: | |
2047 | case elfcpp::R_SPARC_PCPLT10: | |
2048 | return Symbol::FUNCTION_CALL | Symbol::ABSOLUTE_REF; | |
2049 | ||
2050 | case elfcpp::R_SPARC_PCPLT32: | |
2051 | case elfcpp::R_SPARC_PCPLT22: | |
2052 | case elfcpp::R_SPARC_WPLT30: | |
2053 | return Symbol::FUNCTION_CALL | Symbol::RELATIVE_REF; | |
2054 | ||
2055 | case elfcpp::R_SPARC_GOTDATA_OP: | |
2056 | case elfcpp::R_SPARC_GOTDATA_OP_HIX22: | |
2057 | case elfcpp::R_SPARC_GOTDATA_OP_LOX10: | |
2058 | case elfcpp::R_SPARC_GOT10: | |
2059 | case elfcpp::R_SPARC_GOT13: | |
2060 | case elfcpp::R_SPARC_GOT22: | |
2061 | // Absolute in GOT. | |
2062 | return Symbol::ABSOLUTE_REF; | |
2063 | ||
2064 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
2065 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2066 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2067 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2068 | case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic | |
2069 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2070 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2071 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2072 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
2073 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
2074 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
2075 | case elfcpp::R_SPARC_TLS_LE_HIX22: | |
2076 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
2077 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
2078 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2079 | case elfcpp::R_SPARC_TLS_IE_LD: | |
2080 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
2081 | case elfcpp::R_SPARC_TLS_IE_ADD: | |
2082 | return Symbol::TLS_REF; | |
2083 | ||
2084 | case elfcpp::R_SPARC_COPY: | |
2085 | case elfcpp::R_SPARC_GLOB_DAT: | |
2086 | case elfcpp::R_SPARC_JMP_SLOT: | |
8c2bf391 | 2087 | case elfcpp::R_SPARC_JMP_IREL: |
95a2c8d6 | 2088 | case elfcpp::R_SPARC_RELATIVE: |
8c2bf391 | 2089 | case elfcpp::R_SPARC_IRELATIVE: |
95a2c8d6 RS |
2090 | case elfcpp::R_SPARC_TLS_DTPMOD64: |
2091 | case elfcpp::R_SPARC_TLS_DTPMOD32: | |
2092 | case elfcpp::R_SPARC_TLS_DTPOFF64: | |
2093 | case elfcpp::R_SPARC_TLS_DTPOFF32: | |
2094 | case elfcpp::R_SPARC_TLS_TPOFF64: | |
2095 | case elfcpp::R_SPARC_TLS_TPOFF32: | |
2096 | default: | |
2097 | // Not expected. We will give an error later. | |
2098 | return 0; | |
2099 | } | |
2100 | } | |
2101 | ||
f5314dd5 DM |
2102 | // Generate a PLT entry slot for a call to __tls_get_addr |
2103 | template<int size, bool big_endian> | |
2104 | void | |
2105 | Target_sparc<size, big_endian>::Scan::generate_tls_call(Symbol_table* symtab, | |
2106 | Layout* layout, | |
2107 | Target_sparc<size, big_endian>* target) | |
2108 | { | |
2109 | Symbol* gsym = target->tls_get_addr_sym(symtab); | |
2110 | ||
2111 | target->make_plt_entry(symtab, layout, gsym); | |
2112 | } | |
2113 | ||
2114 | // Report an unsupported relocation against a local symbol. | |
2115 | ||
2116 | template<int size, bool big_endian> | |
2117 | void | |
2118 | Target_sparc<size, big_endian>::Scan::unsupported_reloc_local( | |
6fa2a40b | 2119 | Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
2120 | unsigned int r_type) |
2121 | { | |
2122 | gold_error(_("%s: unsupported reloc %u against local symbol"), | |
2123 | object->name().c_str(), r_type); | |
2124 | } | |
2125 | ||
32b769e1 DM |
2126 | // We are about to emit a dynamic relocation of type R_TYPE. If the |
2127 | // dynamic linker does not support it, issue an error. | |
2128 | ||
2129 | template<int size, bool big_endian> | |
2130 | void | |
2131 | Target_sparc<size, big_endian>::Scan::check_non_pic(Relobj* object, unsigned int r_type) | |
2132 | { | |
2133 | gold_assert(r_type != elfcpp::R_SPARC_NONE); | |
2134 | ||
2135 | if (size == 64) | |
2136 | { | |
2137 | switch (r_type) | |
2138 | { | |
2139 | // These are the relocation types supported by glibc for sparc 64-bit. | |
2140 | case elfcpp::R_SPARC_RELATIVE: | |
8c2bf391 | 2141 | case elfcpp::R_SPARC_IRELATIVE: |
32b769e1 DM |
2142 | case elfcpp::R_SPARC_COPY: |
2143 | case elfcpp::R_SPARC_64: | |
2144 | case elfcpp::R_SPARC_GLOB_DAT: | |
2145 | case elfcpp::R_SPARC_JMP_SLOT: | |
8c2bf391 | 2146 | case elfcpp::R_SPARC_JMP_IREL: |
32b769e1 DM |
2147 | case elfcpp::R_SPARC_TLS_DTPMOD64: |
2148 | case elfcpp::R_SPARC_TLS_DTPOFF64: | |
2149 | case elfcpp::R_SPARC_TLS_TPOFF64: | |
2150 | case elfcpp::R_SPARC_TLS_LE_HIX22: | |
2151 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
2152 | case elfcpp::R_SPARC_8: | |
2153 | case elfcpp::R_SPARC_16: | |
2154 | case elfcpp::R_SPARC_DISP8: | |
2155 | case elfcpp::R_SPARC_DISP16: | |
2156 | case elfcpp::R_SPARC_DISP32: | |
2157 | case elfcpp::R_SPARC_WDISP30: | |
2158 | case elfcpp::R_SPARC_LO10: | |
2159 | case elfcpp::R_SPARC_HI22: | |
2160 | case elfcpp::R_SPARC_OLO10: | |
2615994e | 2161 | case elfcpp::R_SPARC_H34: |
32b769e1 DM |
2162 | case elfcpp::R_SPARC_H44: |
2163 | case elfcpp::R_SPARC_M44: | |
2164 | case elfcpp::R_SPARC_L44: | |
2165 | case elfcpp::R_SPARC_HH22: | |
2166 | case elfcpp::R_SPARC_HM10: | |
2167 | case elfcpp::R_SPARC_LM22: | |
2168 | case elfcpp::R_SPARC_UA16: | |
2169 | case elfcpp::R_SPARC_UA32: | |
2170 | case elfcpp::R_SPARC_UA64: | |
2171 | return; | |
2172 | ||
2173 | default: | |
2174 | break; | |
2175 | } | |
2176 | } | |
2177 | else | |
2178 | { | |
2179 | switch (r_type) | |
2180 | { | |
2181 | // These are the relocation types supported by glibc for sparc 32-bit. | |
2182 | case elfcpp::R_SPARC_RELATIVE: | |
8c2bf391 | 2183 | case elfcpp::R_SPARC_IRELATIVE: |
32b769e1 DM |
2184 | case elfcpp::R_SPARC_COPY: |
2185 | case elfcpp::R_SPARC_GLOB_DAT: | |
2186 | case elfcpp::R_SPARC_32: | |
2187 | case elfcpp::R_SPARC_JMP_SLOT: | |
8c2bf391 | 2188 | case elfcpp::R_SPARC_JMP_IREL: |
32b769e1 DM |
2189 | case elfcpp::R_SPARC_TLS_DTPMOD32: |
2190 | case elfcpp::R_SPARC_TLS_DTPOFF32: | |
2191 | case elfcpp::R_SPARC_TLS_TPOFF32: | |
2192 | case elfcpp::R_SPARC_TLS_LE_HIX22: | |
2193 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
2194 | case elfcpp::R_SPARC_8: | |
2195 | case elfcpp::R_SPARC_16: | |
2196 | case elfcpp::R_SPARC_DISP8: | |
2197 | case elfcpp::R_SPARC_DISP16: | |
2198 | case elfcpp::R_SPARC_DISP32: | |
2199 | case elfcpp::R_SPARC_LO10: | |
2200 | case elfcpp::R_SPARC_WDISP30: | |
2201 | case elfcpp::R_SPARC_HI22: | |
2202 | case elfcpp::R_SPARC_UA16: | |
2203 | case elfcpp::R_SPARC_UA32: | |
2204 | return; | |
2205 | ||
2206 | default: | |
2207 | break; | |
2208 | } | |
2209 | } | |
2210 | ||
2211 | // This prevents us from issuing more than one error per reloc | |
2212 | // section. But we can still wind up issuing more than one | |
2213 | // error per object file. | |
2214 | if (this->issued_non_pic_error_) | |
2215 | return; | |
33aea2fd | 2216 | gold_assert(parameters->options().output_is_position_independent()); |
32b769e1 DM |
2217 | object->error(_("requires unsupported dynamic reloc; " |
2218 | "recompile with -fPIC")); | |
2219 | this->issued_non_pic_error_ = true; | |
2220 | return; | |
2221 | } | |
2222 | ||
8c2bf391 DM |
2223 | // Return whether we need to make a PLT entry for a relocation of the |
2224 | // given type against a STT_GNU_IFUNC symbol. | |
2225 | ||
2226 | template<int size, bool big_endian> | |
2227 | bool | |
2228 | Target_sparc<size, big_endian>::Scan::reloc_needs_plt_for_ifunc( | |
2229 | Sized_relobj_file<size, big_endian>* object, | |
2230 | unsigned int r_type) | |
2231 | { | |
2232 | int flags = Scan::get_reference_flags(r_type); | |
2233 | if (flags & Symbol::TLS_REF) | |
2234 | gold_error(_("%s: unsupported TLS reloc %u for IFUNC symbol"), | |
2e702c99 | 2235 | object->name().c_str(), r_type); |
8c2bf391 DM |
2236 | return flags != 0; |
2237 | } | |
2238 | ||
f5314dd5 DM |
2239 | // Scan a relocation for a local symbol. |
2240 | ||
2241 | template<int size, bool big_endian> | |
2242 | inline void | |
2243 | Target_sparc<size, big_endian>::Scan::local( | |
f5314dd5 DM |
2244 | Symbol_table* symtab, |
2245 | Layout* layout, | |
2246 | Target_sparc<size, big_endian>* target, | |
6fa2a40b | 2247 | Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
2248 | unsigned int data_shndx, |
2249 | Output_section* output_section, | |
2250 | const elfcpp::Rela<size, big_endian>& reloc, | |
2251 | unsigned int r_type, | |
bfdfa4cd AM |
2252 | const elfcpp::Sym<size, big_endian>& lsym, |
2253 | bool is_discarded) | |
f5314dd5 | 2254 | { |
bfdfa4cd AM |
2255 | if (is_discarded) |
2256 | return; | |
2257 | ||
8c2bf391 | 2258 | bool is_ifunc = lsym.get_st_type() == elfcpp::STT_GNU_IFUNC; |
f5314dd5 | 2259 | unsigned int orig_r_type = r_type; |
f5314dd5 | 2260 | r_type &= 0xff; |
8c2bf391 DM |
2261 | |
2262 | if (is_ifunc | |
2263 | && this->reloc_needs_plt_for_ifunc(object, r_type)) | |
2264 | { | |
2265 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
2266 | target->make_local_ifunc_plt_entry(symtab, layout, object, r_sym); | |
2267 | } | |
2268 | ||
f5314dd5 DM |
2269 | switch (r_type) |
2270 | { | |
2271 | case elfcpp::R_SPARC_NONE: | |
2272 | case elfcpp::R_SPARC_REGISTER: | |
2273 | case elfcpp::R_SPARC_GNU_VTINHERIT: | |
2274 | case elfcpp::R_SPARC_GNU_VTENTRY: | |
2275 | break; | |
2276 | ||
2277 | case elfcpp::R_SPARC_64: | |
2278 | case elfcpp::R_SPARC_32: | |
2279 | // If building a shared library (or a position-independent | |
2280 | // executable), we need to create a dynamic relocation for | |
2281 | // this location. The relocation applied at link time will | |
2282 | // apply the link-time value, so we flag the location with | |
2283 | // an R_SPARC_RELATIVE relocation so the dynamic loader can | |
2284 | // relocate it easily. | |
2285 | if (parameters->options().output_is_position_independent()) | |
2e702c99 RM |
2286 | { |
2287 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
2288 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
2289 | rela_dyn->add_local_relative(object, r_sym, elfcpp::R_SPARC_RELATIVE, | |
f5314dd5 DM |
2290 | output_section, data_shndx, |
2291 | reloc.get_r_offset(), | |
8c2bf391 | 2292 | reloc.get_r_addend(), is_ifunc); |
2e702c99 | 2293 | } |
f5314dd5 DM |
2294 | break; |
2295 | ||
2296 | case elfcpp::R_SPARC_HIX22: | |
2297 | case elfcpp::R_SPARC_LOX10: | |
2615994e | 2298 | case elfcpp::R_SPARC_H34: |
f5314dd5 DM |
2299 | case elfcpp::R_SPARC_H44: |
2300 | case elfcpp::R_SPARC_M44: | |
2301 | case elfcpp::R_SPARC_L44: | |
2302 | case elfcpp::R_SPARC_HH22: | |
2303 | case elfcpp::R_SPARC_HM10: | |
2304 | case elfcpp::R_SPARC_LM22: | |
2305 | case elfcpp::R_SPARC_UA64: | |
2306 | case elfcpp::R_SPARC_UA32: | |
2307 | case elfcpp::R_SPARC_UA16: | |
2308 | case elfcpp::R_SPARC_HI22: | |
2309 | case elfcpp::R_SPARC_LO10: | |
2310 | case elfcpp::R_SPARC_OLO10: | |
2311 | case elfcpp::R_SPARC_16: | |
2312 | case elfcpp::R_SPARC_11: | |
2313 | case elfcpp::R_SPARC_10: | |
2314 | case elfcpp::R_SPARC_8: | |
2315 | case elfcpp::R_SPARC_7: | |
2316 | case elfcpp::R_SPARC_6: | |
2317 | case elfcpp::R_SPARC_5: | |
2318 | // If building a shared library (or a position-independent | |
2319 | // executable), we need to create a dynamic relocation for | |
2320 | // this location. | |
2321 | if (parameters->options().output_is_position_independent()) | |
2e702c99 RM |
2322 | { |
2323 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
2324 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
32b769e1 DM |
2325 | |
2326 | check_non_pic(object, r_type); | |
2e702c99 RM |
2327 | if (lsym.get_st_type() != elfcpp::STT_SECTION) |
2328 | { | |
2329 | rela_dyn->add_local(object, r_sym, orig_r_type, output_section, | |
f5314dd5 DM |
2330 | data_shndx, reloc.get_r_offset(), |
2331 | reloc.get_r_addend()); | |
2e702c99 RM |
2332 | } |
2333 | else | |
2334 | { | |
2335 | gold_assert(lsym.get_st_value() == 0); | |
0da6fa6c DM |
2336 | rela_dyn->add_symbolless_local_addend(object, r_sym, orig_r_type, |
2337 | output_section, data_shndx, | |
2338 | reloc.get_r_offset(), | |
2339 | reloc.get_r_addend()); | |
2e702c99 RM |
2340 | } |
2341 | } | |
f5314dd5 DM |
2342 | break; |
2343 | ||
2344 | case elfcpp::R_SPARC_WDISP30: | |
8861f32b | 2345 | case elfcpp::R_SPARC_WPLT30: |
f5314dd5 DM |
2346 | case elfcpp::R_SPARC_WDISP22: |
2347 | case elfcpp::R_SPARC_WDISP19: | |
2348 | case elfcpp::R_SPARC_WDISP16: | |
2615994e | 2349 | case elfcpp::R_SPARC_WDISP10: |
f5314dd5 DM |
2350 | case elfcpp::R_SPARC_DISP8: |
2351 | case elfcpp::R_SPARC_DISP16: | |
2352 | case elfcpp::R_SPARC_DISP32: | |
2353 | case elfcpp::R_SPARC_DISP64: | |
2354 | case elfcpp::R_SPARC_PC10: | |
2355 | case elfcpp::R_SPARC_PC22: | |
2356 | break; | |
2357 | ||
024c4466 DM |
2358 | case elfcpp::R_SPARC_GOTDATA_OP: |
2359 | case elfcpp::R_SPARC_GOTDATA_OP_HIX22: | |
2360 | case elfcpp::R_SPARC_GOTDATA_OP_LOX10: | |
2a1079e8 DM |
2361 | // We will optimize this into a GOT relative relocation |
2362 | // and code transform the GOT load into an addition. | |
2363 | break; | |
2364 | ||
f5314dd5 DM |
2365 | case elfcpp::R_SPARC_GOT10: |
2366 | case elfcpp::R_SPARC_GOT13: | |
2367 | case elfcpp::R_SPARC_GOT22: | |
2368 | { | |
2e702c99 RM |
2369 | // The symbol requires a GOT entry. |
2370 | Output_data_got<size, big_endian>* got; | |
2371 | unsigned int r_sym; | |
f5314dd5 DM |
2372 | |
2373 | got = target->got_section(symtab, layout); | |
2374 | r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
2375 | ||
2376 | // If we are generating a shared object, we need to add a | |
2377 | // dynamic relocation for this symbol's GOT entry. | |
2378 | if (parameters->options().output_is_position_independent()) | |
2379 | { | |
2380 | if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)) | |
2381 | { | |
2382 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
8c2bf391 | 2383 | unsigned int off = got->add_constant(0); |
f5314dd5 DM |
2384 | object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off); |
2385 | rela_dyn->add_local_relative(object, r_sym, | |
2386 | elfcpp::R_SPARC_RELATIVE, | |
8c2bf391 | 2387 | got, off, 0, is_ifunc); |
f5314dd5 DM |
2388 | } |
2389 | } | |
2390 | else | |
2391 | got->add_local(object, r_sym, GOT_TYPE_STANDARD); | |
2392 | } | |
2393 | break; | |
2394 | ||
2395 | // These are initial TLS relocs, which are expected when | |
2396 | // linking. | |
2397 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
2398 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2399 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2400 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2401 | case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic | |
2402 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2403 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2404 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2405 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
2406 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
2407 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
2408 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
2409 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2410 | case elfcpp::R_SPARC_TLS_IE_LD: | |
2411 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
9efe6174 | 2412 | case elfcpp::R_SPARC_TLS_IE_ADD: |
f5314dd5 DM |
2413 | case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec |
2414 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
2415 | { | |
2416 | bool output_is_shared = parameters->options().shared(); | |
2417 | const tls::Tls_optimization optimized_type | |
2e702c99 | 2418 | = optimize_tls_reloc(!output_is_shared, r_type); |
f5314dd5 DM |
2419 | switch (r_type) |
2420 | { | |
2421 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
2422 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2423 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2424 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2425 | if (optimized_type == tls::TLSOPT_NONE) | |
2426 | { | |
2e702c99 RM |
2427 | // Create a pair of GOT entries for the module index and |
2428 | // dtv-relative offset. | |
2429 | Output_data_got<size, big_endian>* got | |
2430 | = target->got_section(symtab, layout); | |
2431 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
d491d34e ILT |
2432 | unsigned int shndx = lsym.get_st_shndx(); |
2433 | bool is_ordinary; | |
2434 | shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
2435 | if (!is_ordinary) | |
2436 | object->error(_("local symbol %u has bad shndx %u"), | |
2437 | r_sym, shndx); | |
2438 | else | |
2e702c99 | 2439 | got->add_local_pair_with_rel(object, r_sym, |
83896202 ILT |
2440 | lsym.get_st_shndx(), |
2441 | GOT_TYPE_TLS_PAIR, | |
2442 | target->rela_dyn_section(layout), | |
2443 | (size == 64 | |
2444 | ? elfcpp::R_SPARC_TLS_DTPMOD64 | |
bd73a62d | 2445 | : elfcpp::R_SPARC_TLS_DTPMOD32)); |
f5314dd5 DM |
2446 | if (r_type == elfcpp::R_SPARC_TLS_GD_CALL) |
2447 | generate_tls_call(symtab, layout, target); | |
2448 | } | |
2449 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
2450 | unsupported_reloc_local(object, r_type); | |
2451 | break; | |
2452 | ||
2453 | case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic | |
2454 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2455 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2456 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2457 | if (optimized_type == tls::TLSOPT_NONE) | |
2458 | { | |
2459 | // Create a GOT entry for the module index. | |
2460 | target->got_mod_index_entry(symtab, layout, object); | |
2461 | ||
2462 | if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL) | |
2463 | generate_tls_call(symtab, layout, target); | |
2464 | } | |
2465 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
2466 | unsupported_reloc_local(object, r_type); | |
2467 | break; | |
2468 | ||
2469 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
2470 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
2471 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
2472 | break; | |
2473 | ||
2474 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
2475 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2476 | case elfcpp::R_SPARC_TLS_IE_LD: | |
2477 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
9efe6174 | 2478 | case elfcpp::R_SPARC_TLS_IE_ADD: |
f5314dd5 DM |
2479 | layout->set_has_static_tls(); |
2480 | if (optimized_type == tls::TLSOPT_NONE) | |
2481 | { | |
2482 | // Create a GOT entry for the tp-relative offset. | |
2483 | Output_data_got<size, big_endian>* got | |
2484 | = target->got_section(symtab, layout); | |
2485 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
2486 | ||
2487 | if (!object->local_has_got_offset(r_sym, GOT_TYPE_TLS_OFFSET)) | |
2488 | { | |
2489 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
0da6fa6c DM |
2490 | unsigned int off = got->add_constant(0); |
2491 | ||
2492 | object->set_local_got_offset(r_sym, GOT_TYPE_TLS_OFFSET, off); | |
684b268a | 2493 | |
0da6fa6c DM |
2494 | rela_dyn->add_symbolless_local_addend(object, r_sym, |
2495 | (size == 64 ? | |
2496 | elfcpp::R_SPARC_TLS_TPOFF64 : | |
2497 | elfcpp::R_SPARC_TLS_TPOFF32), | |
2498 | got, off, 0); | |
f5314dd5 DM |
2499 | } |
2500 | } | |
2501 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
2502 | unsupported_reloc_local(object, r_type); | |
2503 | break; | |
2504 | ||
2505 | case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec | |
2506 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
2507 | layout->set_has_static_tls(); | |
2508 | if (output_is_shared) | |
2509 | { | |
2e702c99 RM |
2510 | // We need to create a dynamic relocation. |
2511 | gold_assert(lsym.get_st_type() != elfcpp::STT_SECTION); | |
2512 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
2513 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
2514 | rela_dyn->add_symbolless_local_addend(object, r_sym, r_type, | |
0da6fa6c DM |
2515 | output_section, data_shndx, |
2516 | reloc.get_r_offset(), 0); | |
f5314dd5 DM |
2517 | } |
2518 | break; | |
2519 | } | |
2520 | } | |
2521 | break; | |
2522 | ||
2523 | // These are relocations which should only be seen by the | |
2524 | // dynamic linker, and should never be seen here. | |
2525 | case elfcpp::R_SPARC_COPY: | |
2526 | case elfcpp::R_SPARC_GLOB_DAT: | |
2527 | case elfcpp::R_SPARC_JMP_SLOT: | |
8c2bf391 | 2528 | case elfcpp::R_SPARC_JMP_IREL: |
f5314dd5 | 2529 | case elfcpp::R_SPARC_RELATIVE: |
8c2bf391 | 2530 | case elfcpp::R_SPARC_IRELATIVE: |
f5314dd5 DM |
2531 | case elfcpp::R_SPARC_TLS_DTPMOD64: |
2532 | case elfcpp::R_SPARC_TLS_DTPMOD32: | |
2533 | case elfcpp::R_SPARC_TLS_DTPOFF64: | |
2534 | case elfcpp::R_SPARC_TLS_DTPOFF32: | |
2535 | case elfcpp::R_SPARC_TLS_TPOFF64: | |
2536 | case elfcpp::R_SPARC_TLS_TPOFF32: | |
2537 | gold_error(_("%s: unexpected reloc %u in object file"), | |
2538 | object->name().c_str(), r_type); | |
2539 | break; | |
2540 | ||
2541 | default: | |
2542 | unsupported_reloc_local(object, r_type); | |
2543 | break; | |
2544 | } | |
2545 | } | |
2546 | ||
2547 | // Report an unsupported relocation against a global symbol. | |
2548 | ||
2549 | template<int size, bool big_endian> | |
2550 | void | |
2551 | Target_sparc<size, big_endian>::Scan::unsupported_reloc_global( | |
6fa2a40b | 2552 | Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
2553 | unsigned int r_type, |
2554 | Symbol* gsym) | |
2555 | { | |
2556 | gold_error(_("%s: unsupported reloc %u against global symbol %s"), | |
2557 | object->name().c_str(), r_type, gsym->demangled_name().c_str()); | |
2558 | } | |
2559 | ||
2560 | // Scan a relocation for a global symbol. | |
2561 | ||
2562 | template<int size, bool big_endian> | |
2563 | inline void | |
2564 | Target_sparc<size, big_endian>::Scan::global( | |
f5314dd5 DM |
2565 | Symbol_table* symtab, |
2566 | Layout* layout, | |
2567 | Target_sparc<size, big_endian>* target, | |
6fa2a40b | 2568 | Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
2569 | unsigned int data_shndx, |
2570 | Output_section* output_section, | |
2571 | const elfcpp::Rela<size, big_endian>& reloc, | |
2572 | unsigned int r_type, | |
2573 | Symbol* gsym) | |
2574 | { | |
2575 | unsigned int orig_r_type = r_type; | |
8c2bf391 | 2576 | bool is_ifunc = gsym->type() == elfcpp::STT_GNU_IFUNC; |
f5314dd5 | 2577 | |
9efe6174 ILT |
2578 | // A reference to _GLOBAL_OFFSET_TABLE_ implies that we need a got |
2579 | // section. We check here to avoid creating a dynamic reloc against | |
2580 | // _GLOBAL_OFFSET_TABLE_. | |
2581 | if (!target->has_got_section() | |
2582 | && strcmp(gsym->name(), "_GLOBAL_OFFSET_TABLE_") == 0) | |
2583 | target->got_section(symtab, layout); | |
2584 | ||
f5314dd5 | 2585 | r_type &= 0xff; |
8c2bf391 DM |
2586 | |
2587 | // A STT_GNU_IFUNC symbol may require a PLT entry. | |
2588 | if (is_ifunc | |
2589 | && this->reloc_needs_plt_for_ifunc(object, r_type)) | |
2590 | target->make_plt_entry(symtab, layout, gsym); | |
2591 | ||
f5314dd5 DM |
2592 | switch (r_type) |
2593 | { | |
2594 | case elfcpp::R_SPARC_NONE: | |
2595 | case elfcpp::R_SPARC_REGISTER: | |
2596 | case elfcpp::R_SPARC_GNU_VTINHERIT: | |
2597 | case elfcpp::R_SPARC_GNU_VTENTRY: | |
2598 | break; | |
2599 | ||
2600 | case elfcpp::R_SPARC_PLT64: | |
2601 | case elfcpp::R_SPARC_PLT32: | |
2602 | case elfcpp::R_SPARC_HIPLT22: | |
2603 | case elfcpp::R_SPARC_LOPLT10: | |
2604 | case elfcpp::R_SPARC_PCPLT32: | |
2605 | case elfcpp::R_SPARC_PCPLT22: | |
2606 | case elfcpp::R_SPARC_PCPLT10: | |
2607 | case elfcpp::R_SPARC_WPLT30: | |
2608 | // If the symbol is fully resolved, this is just a PC32 reloc. | |
2609 | // Otherwise we need a PLT entry. | |
2610 | if (gsym->final_value_is_known()) | |
2611 | break; | |
2612 | // If building a shared library, we can also skip the PLT entry | |
2613 | // if the symbol is defined in the output file and is protected | |
2614 | // or hidden. | |
2615 | if (gsym->is_defined() | |
2e702c99 RM |
2616 | && !gsym->is_from_dynobj() |
2617 | && !gsym->is_preemptible()) | |
f5314dd5 DM |
2618 | break; |
2619 | target->make_plt_entry(symtab, layout, gsym); | |
2620 | break; | |
2621 | ||
2622 | case elfcpp::R_SPARC_DISP8: | |
2623 | case elfcpp::R_SPARC_DISP16: | |
2624 | case elfcpp::R_SPARC_DISP32: | |
2625 | case elfcpp::R_SPARC_DISP64: | |
2626 | case elfcpp::R_SPARC_PC_HH22: | |
2627 | case elfcpp::R_SPARC_PC_HM10: | |
2628 | case elfcpp::R_SPARC_PC_LM22: | |
2629 | case elfcpp::R_SPARC_PC10: | |
2630 | case elfcpp::R_SPARC_PC22: | |
2631 | case elfcpp::R_SPARC_WDISP30: | |
2632 | case elfcpp::R_SPARC_WDISP22: | |
2633 | case elfcpp::R_SPARC_WDISP19: | |
2634 | case elfcpp::R_SPARC_WDISP16: | |
2615994e | 2635 | case elfcpp::R_SPARC_WDISP10: |
f5314dd5 DM |
2636 | { |
2637 | if (gsym->needs_plt_entry()) | |
2638 | target->make_plt_entry(symtab, layout, gsym); | |
2639 | // Make a dynamic relocation if necessary. | |
95a2c8d6 | 2640 | if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type))) |
f5314dd5 | 2641 | { |
a82bef93 ST |
2642 | if (parameters->options().output_is_executable() |
2643 | && gsym->may_need_copy_reloc()) | |
f5314dd5 | 2644 | { |
12c0daef | 2645 | target->copy_reloc(symtab, layout, object, |
f5314dd5 DM |
2646 | data_shndx, output_section, gsym, |
2647 | reloc); | |
2648 | } | |
2649 | else | |
2650 | { | |
2651 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
32b769e1 | 2652 | check_non_pic(object, r_type); |
f5314dd5 DM |
2653 | rela_dyn->add_global(gsym, orig_r_type, output_section, object, |
2654 | data_shndx, reloc.get_r_offset(), | |
2655 | reloc.get_r_addend()); | |
2656 | } | |
2657 | } | |
2658 | } | |
2659 | break; | |
2660 | ||
2661 | case elfcpp::R_SPARC_UA64: | |
2662 | case elfcpp::R_SPARC_64: | |
2663 | case elfcpp::R_SPARC_HIX22: | |
2664 | case elfcpp::R_SPARC_LOX10: | |
2615994e | 2665 | case elfcpp::R_SPARC_H34: |
f5314dd5 DM |
2666 | case elfcpp::R_SPARC_H44: |
2667 | case elfcpp::R_SPARC_M44: | |
2668 | case elfcpp::R_SPARC_L44: | |
2669 | case elfcpp::R_SPARC_HH22: | |
2670 | case elfcpp::R_SPARC_HM10: | |
2671 | case elfcpp::R_SPARC_LM22: | |
2672 | case elfcpp::R_SPARC_HI22: | |
2673 | case elfcpp::R_SPARC_LO10: | |
2674 | case elfcpp::R_SPARC_OLO10: | |
2675 | case elfcpp::R_SPARC_UA32: | |
2676 | case elfcpp::R_SPARC_32: | |
2677 | case elfcpp::R_SPARC_UA16: | |
2678 | case elfcpp::R_SPARC_16: | |
2679 | case elfcpp::R_SPARC_11: | |
2680 | case elfcpp::R_SPARC_10: | |
2681 | case elfcpp::R_SPARC_8: | |
2682 | case elfcpp::R_SPARC_7: | |
2683 | case elfcpp::R_SPARC_6: | |
2684 | case elfcpp::R_SPARC_5: | |
2685 | { | |
2e702c99 RM |
2686 | // Make a PLT entry if necessary. |
2687 | if (gsym->needs_plt_entry()) | |
2688 | { | |
2689 | target->make_plt_entry(symtab, layout, gsym); | |
2690 | // Since this is not a PC-relative relocation, we may be | |
2691 | // taking the address of a function. In that case we need to | |
2692 | // set the entry in the dynamic symbol table to the address of | |
2693 | // the PLT entry. | |
2694 | if (gsym->is_from_dynobj() && !parameters->options().shared()) | |
2695 | gsym->set_needs_dynsym_value(); | |
2696 | } | |
2697 | // Make a dynamic relocation if necessary. | |
2698 | if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type))) | |
2699 | { | |
0da6fa6c DM |
2700 | unsigned int r_off = reloc.get_r_offset(); |
2701 | ||
2702 | // The assembler can sometimes emit unaligned relocations | |
2e702c99 | 2703 | // for dwarf2 cfi directives. |
0da6fa6c DM |
2704 | switch (r_type) |
2705 | { | |
2706 | case elfcpp::R_SPARC_16: | |
2707 | if (r_off & 0x1) | |
2708 | orig_r_type = r_type = elfcpp::R_SPARC_UA16; | |
2709 | break; | |
2710 | case elfcpp::R_SPARC_32: | |
2711 | if (r_off & 0x3) | |
2712 | orig_r_type = r_type = elfcpp::R_SPARC_UA32; | |
2713 | break; | |
2714 | case elfcpp::R_SPARC_64: | |
2715 | if (r_off & 0x7) | |
2716 | orig_r_type = r_type = elfcpp::R_SPARC_UA64; | |
2717 | break; | |
2718 | case elfcpp::R_SPARC_UA16: | |
2719 | if (!(r_off & 0x1)) | |
2720 | orig_r_type = r_type = elfcpp::R_SPARC_16; | |
2721 | break; | |
2722 | case elfcpp::R_SPARC_UA32: | |
2723 | if (!(r_off & 0x3)) | |
2724 | orig_r_type = r_type = elfcpp::R_SPARC_32; | |
2725 | break; | |
2726 | case elfcpp::R_SPARC_UA64: | |
2727 | if (!(r_off & 0x7)) | |
2728 | orig_r_type = r_type = elfcpp::R_SPARC_64; | |
2729 | break; | |
2730 | } | |
2731 | ||
a82bef93 ST |
2732 | if (!parameters->options().output_is_position_independent() |
2733 | && gsym->may_need_copy_reloc()) | |
2e702c99 RM |
2734 | { |
2735 | target->copy_reloc(symtab, layout, object, | |
2736 | data_shndx, output_section, gsym, reloc); | |
2737 | } | |
8c2bf391 DM |
2738 | else if (((size == 64 && r_type == elfcpp::R_SPARC_64) |
2739 | || (size == 32 && r_type == elfcpp::R_SPARC_32)) | |
2740 | && gsym->type() == elfcpp::STT_GNU_IFUNC | |
2741 | && gsym->can_use_relative_reloc(false) | |
2742 | && !gsym->is_from_dynobj() | |
2743 | && !gsym->is_undefined() | |
2744 | && !gsym->is_preemptible()) | |
2745 | { | |
2746 | // Use an IRELATIVE reloc for a locally defined | |
2747 | // STT_GNU_IFUNC symbol. This makes a function | |
2748 | // address in a PIE executable match the address in a | |
2749 | // shared library that it links against. | |
2750 | Reloc_section* rela_dyn = | |
2751 | target->rela_ifunc_section(layout); | |
2752 | unsigned int r_type = elfcpp::R_SPARC_IRELATIVE; | |
2753 | rela_dyn->add_symbolless_global_addend(gsym, r_type, | |
2754 | output_section, object, | |
2755 | data_shndx, | |
2756 | reloc.get_r_offset(), | |
2757 | reloc.get_r_addend()); | |
2758 | } | |
2e702c99 | 2759 | else if ((r_type == elfcpp::R_SPARC_32 |
f5314dd5 | 2760 | || r_type == elfcpp::R_SPARC_64) |
2e702c99 RM |
2761 | && gsym->can_use_relative_reloc(false)) |
2762 | { | |
2763 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
2764 | rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE, | |
f5314dd5 DM |
2765 | output_section, object, |
2766 | data_shndx, reloc.get_r_offset(), | |
8c2bf391 | 2767 | reloc.get_r_addend(), is_ifunc); |
2e702c99 RM |
2768 | } |
2769 | else | |
2770 | { | |
2771 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
f5314dd5 | 2772 | |
32b769e1 | 2773 | check_non_pic(object, r_type); |
0da6fa6c DM |
2774 | if (gsym->is_from_dynobj() |
2775 | || gsym->is_undefined() | |
2776 | || gsym->is_preemptible()) | |
2777 | rela_dyn->add_global(gsym, orig_r_type, output_section, | |
2778 | object, data_shndx, | |
2779 | reloc.get_r_offset(), | |
2780 | reloc.get_r_addend()); | |
2781 | else | |
2782 | rela_dyn->add_symbolless_global_addend(gsym, orig_r_type, | |
2783 | output_section, | |
2784 | object, data_shndx, | |
2785 | reloc.get_r_offset(), | |
2786 | reloc.get_r_addend()); | |
2e702c99 RM |
2787 | } |
2788 | } | |
f5314dd5 DM |
2789 | } |
2790 | break; | |
2791 | ||
024c4466 DM |
2792 | case elfcpp::R_SPARC_GOTDATA_OP: |
2793 | case elfcpp::R_SPARC_GOTDATA_OP_HIX22: | |
2794 | case elfcpp::R_SPARC_GOTDATA_OP_LOX10: | |
2a1079e8 | 2795 | if (gsym->is_defined() |
2e702c99 RM |
2796 | && !gsym->is_from_dynobj() |
2797 | && !gsym->is_preemptible() | |
2a1079e8 DM |
2798 | && !is_ifunc) |
2799 | { | |
2800 | // We will optimize this into a GOT relative relocation | |
2801 | // and code transform the GOT load into an addition. | |
2802 | break; | |
2803 | } | |
f5314dd5 DM |
2804 | case elfcpp::R_SPARC_GOT10: |
2805 | case elfcpp::R_SPARC_GOT13: | |
2806 | case elfcpp::R_SPARC_GOT22: | |
2807 | { | |
2e702c99 RM |
2808 | // The symbol requires a GOT entry. |
2809 | Output_data_got<size, big_endian>* got; | |
f5314dd5 DM |
2810 | |
2811 | got = target->got_section(symtab, layout); | |
2e702c99 | 2812 | if (gsym->final_value_is_known()) |
8c2bf391 DM |
2813 | { |
2814 | // For a STT_GNU_IFUNC symbol we want the PLT address. | |
2815 | if (gsym->type() == elfcpp::STT_GNU_IFUNC) | |
2816 | got->add_global_plt(gsym, GOT_TYPE_STANDARD); | |
2817 | else | |
2818 | got->add_global(gsym, GOT_TYPE_STANDARD); | |
2819 | } | |
2e702c99 RM |
2820 | else |
2821 | { | |
2822 | // If this symbol is not fully resolved, we need to add a | |
2823 | // GOT entry with a dynamic relocation. | |
8c2bf391 DM |
2824 | bool is_ifunc = gsym->type() == elfcpp::STT_GNU_IFUNC; |
2825 | ||
2826 | // Use a GLOB_DAT rather than a RELATIVE reloc if: | |
2827 | // | |
2828 | // 1) The symbol may be defined in some other module. | |
2829 | // | |
2830 | // 2) We are building a shared library and this is a | |
2831 | // protected symbol; using GLOB_DAT means that the dynamic | |
2832 | // linker can use the address of the PLT in the main | |
2833 | // executable when appropriate so that function address | |
2834 | // comparisons work. | |
2835 | // | |
2836 | // 3) This is a STT_GNU_IFUNC symbol in position dependent | |
2837 | // code, again so that function address comparisons work. | |
2e702c99 RM |
2838 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
2839 | if (gsym->is_from_dynobj() | |
2840 | || gsym->is_undefined() | |
2841 | || gsym->is_preemptible() | |
8c2bf391 DM |
2842 | || (gsym->visibility() == elfcpp::STV_PROTECTED |
2843 | && parameters->options().shared()) | |
2844 | || (gsym->type() == elfcpp::STT_GNU_IFUNC | |
2845 | && parameters->options().output_is_position_independent() | |
2846 | && !gsym->is_forced_local())) | |
2847 | { | |
2848 | unsigned int r_type = elfcpp::R_SPARC_GLOB_DAT; | |
2849 | ||
2850 | // If this symbol is forced local, this relocation will | |
2851 | // not work properly. That's because ld.so on sparc | |
2852 | // (and 32-bit powerpc) expects st_value in the r_addend | |
2853 | // of relocations for STB_LOCAL symbols. Curiously the | |
2854 | // BFD linker does not promote global hidden symbols to be | |
2855 | // STB_LOCAL in the dynamic symbol table like Gold does. | |
2856 | gold_assert(!gsym->is_forced_local()); | |
2857 | got->add_global_with_rel(gsym, GOT_TYPE_STANDARD, rela_dyn, | |
2858 | r_type); | |
2859 | } | |
2e702c99 RM |
2860 | else if (!gsym->has_got_offset(GOT_TYPE_STANDARD)) |
2861 | { | |
f5314dd5 DM |
2862 | unsigned int off = got->add_constant(0); |
2863 | ||
2864 | gsym->set_got_offset(GOT_TYPE_STANDARD, off); | |
8c2bf391 DM |
2865 | if (is_ifunc) |
2866 | { | |
2867 | // Tell the dynamic linker to use the PLT address | |
2868 | // when resolving relocations. | |
2869 | if (gsym->is_from_dynobj() | |
2870 | && !parameters->options().shared()) | |
2871 | gsym->set_needs_dynsym_value(); | |
2872 | } | |
f5314dd5 | 2873 | rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE, |
8c2bf391 | 2874 | got, off, 0, is_ifunc); |
f5314dd5 | 2875 | } |
2e702c99 | 2876 | } |
f5314dd5 DM |
2877 | } |
2878 | break; | |
2879 | ||
2880 | // These are initial tls relocs, which are expected when | |
2881 | // linking. | |
2882 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
2883 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2884 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2885 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2886 | case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic | |
2887 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2888 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2889 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2890 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
2891 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
2892 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
2893 | case elfcpp::R_SPARC_TLS_LE_HIX22: | |
2894 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
2895 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
2896 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2897 | case elfcpp::R_SPARC_TLS_IE_LD: | |
2898 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
9efe6174 | 2899 | case elfcpp::R_SPARC_TLS_IE_ADD: |
f5314dd5 DM |
2900 | { |
2901 | const bool is_final = gsym->final_value_is_known(); | |
2902 | const tls::Tls_optimization optimized_type | |
2e702c99 | 2903 | = optimize_tls_reloc(is_final, r_type); |
f5314dd5 DM |
2904 | switch (r_type) |
2905 | { | |
2906 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
2907 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2908 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2909 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2910 | if (optimized_type == tls::TLSOPT_NONE) | |
2911 | { | |
2e702c99 RM |
2912 | // Create a pair of GOT entries for the module index and |
2913 | // dtv-relative offset. | |
2914 | Output_data_got<size, big_endian>* got | |
2915 | = target->got_section(symtab, layout); | |
2916 | got->add_global_pair_with_rel(gsym, GOT_TYPE_TLS_PAIR, | |
83896202 ILT |
2917 | target->rela_dyn_section(layout), |
2918 | (size == 64 | |
2919 | ? elfcpp::R_SPARC_TLS_DTPMOD64 | |
2920 | : elfcpp::R_SPARC_TLS_DTPMOD32), | |
2921 | (size == 64 | |
2922 | ? elfcpp::R_SPARC_TLS_DTPOFF64 | |
2923 | : elfcpp::R_SPARC_TLS_DTPOFF32)); | |
f5314dd5 DM |
2924 | |
2925 | // Emit R_SPARC_WPLT30 against "__tls_get_addr" | |
2926 | if (r_type == elfcpp::R_SPARC_TLS_GD_CALL) | |
2927 | generate_tls_call(symtab, layout, target); | |
2928 | } | |
2929 | else if (optimized_type == tls::TLSOPT_TO_IE) | |
2930 | { | |
2e702c99 RM |
2931 | // Create a GOT entry for the tp-relative offset. |
2932 | Output_data_got<size, big_endian>* got | |
2933 | = target->got_section(symtab, layout); | |
2934 | got->add_global_with_rel(gsym, GOT_TYPE_TLS_OFFSET, | |
83896202 ILT |
2935 | target->rela_dyn_section(layout), |
2936 | (size == 64 ? | |
2937 | elfcpp::R_SPARC_TLS_TPOFF64 : | |
2938 | elfcpp::R_SPARC_TLS_TPOFF32)); | |
f5314dd5 DM |
2939 | } |
2940 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
2941 | unsupported_reloc_global(object, r_type, gsym); | |
2942 | break; | |
2943 | ||
2944 | case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic | |
2945 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2946 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2947 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2948 | if (optimized_type == tls::TLSOPT_NONE) | |
2949 | { | |
2950 | // Create a GOT entry for the module index. | |
2951 | target->got_mod_index_entry(symtab, layout, object); | |
2952 | ||
2953 | if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL) | |
2954 | generate_tls_call(symtab, layout, target); | |
2955 | } | |
2956 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
2957 | unsupported_reloc_global(object, r_type, gsym); | |
2958 | break; | |
2959 | ||
2960 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
2961 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
2962 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
2963 | break; | |
2964 | ||
2965 | case elfcpp::R_SPARC_TLS_LE_HIX22: | |
2966 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
2967 | layout->set_has_static_tls(); | |
2968 | if (parameters->options().shared()) | |
2969 | { | |
2970 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
0da6fa6c DM |
2971 | rela_dyn->add_symbolless_global_addend(gsym, orig_r_type, |
2972 | output_section, object, | |
2973 | data_shndx, reloc.get_r_offset(), | |
2974 | 0); | |
f5314dd5 DM |
2975 | } |
2976 | break; | |
2977 | ||
2978 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
2979 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2980 | case elfcpp::R_SPARC_TLS_IE_LD: | |
2981 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
9efe6174 | 2982 | case elfcpp::R_SPARC_TLS_IE_ADD: |
f5314dd5 DM |
2983 | layout->set_has_static_tls(); |
2984 | if (optimized_type == tls::TLSOPT_NONE) | |
2985 | { | |
2986 | // Create a GOT entry for the tp-relative offset. | |
2987 | Output_data_got<size, big_endian>* got | |
2988 | = target->got_section(symtab, layout); | |
83896202 ILT |
2989 | got->add_global_with_rel(gsym, GOT_TYPE_TLS_OFFSET, |
2990 | target->rela_dyn_section(layout), | |
2991 | (size == 64 | |
2992 | ? elfcpp::R_SPARC_TLS_TPOFF64 | |
2993 | : elfcpp::R_SPARC_TLS_TPOFF32)); | |
f5314dd5 DM |
2994 | } |
2995 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
2996 | unsupported_reloc_global(object, r_type, gsym); | |
2997 | break; | |
2998 | } | |
2999 | } | |
3000 | break; | |
3001 | ||
3002 | // These are relocations which should only be seen by the | |
3003 | // dynamic linker, and should never be seen here. | |
3004 | case elfcpp::R_SPARC_COPY: | |
3005 | case elfcpp::R_SPARC_GLOB_DAT: | |
3006 | case elfcpp::R_SPARC_JMP_SLOT: | |
8c2bf391 | 3007 | case elfcpp::R_SPARC_JMP_IREL: |
f5314dd5 | 3008 | case elfcpp::R_SPARC_RELATIVE: |
8c2bf391 | 3009 | case elfcpp::R_SPARC_IRELATIVE: |
f5314dd5 DM |
3010 | case elfcpp::R_SPARC_TLS_DTPMOD64: |
3011 | case elfcpp::R_SPARC_TLS_DTPMOD32: | |
3012 | case elfcpp::R_SPARC_TLS_DTPOFF64: | |
3013 | case elfcpp::R_SPARC_TLS_DTPOFF32: | |
3014 | case elfcpp::R_SPARC_TLS_TPOFF64: | |
3015 | case elfcpp::R_SPARC_TLS_TPOFF32: | |
3016 | gold_error(_("%s: unexpected reloc %u in object file"), | |
3017 | object->name().c_str(), r_type); | |
3018 | break; | |
3019 | ||
3020 | default: | |
3021 | unsupported_reloc_global(object, r_type, gsym); | |
3022 | break; | |
3023 | } | |
3024 | } | |
3025 | ||
6d03d481 ST |
3026 | // Process relocations for gc. |
3027 | ||
3028 | template<int size, bool big_endian> | |
3029 | void | |
3030 | Target_sparc<size, big_endian>::gc_process_relocs( | |
6d03d481 ST |
3031 | Symbol_table* symtab, |
3032 | Layout* layout, | |
6fa2a40b | 3033 | Sized_relobj_file<size, big_endian>* object, |
6d03d481 ST |
3034 | unsigned int data_shndx, |
3035 | unsigned int, | |
3036 | const unsigned char* prelocs, | |
3037 | size_t reloc_count, | |
3038 | Output_section* output_section, | |
3039 | bool needs_special_offset_handling, | |
3040 | size_t local_symbol_count, | |
3041 | const unsigned char* plocal_symbols) | |
3042 | { | |
3043 | typedef Target_sparc<size, big_endian> Sparc; | |
2ea97941 | 3044 | typedef typename Target_sparc<size, big_endian>::Scan Scan; |
4d625b70 CC |
3045 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
3046 | Classify_reloc; | |
6d03d481 | 3047 | |
4d625b70 | 3048 | gold::gc_process_relocs<size, big_endian, Sparc, Scan, Classify_reloc>( |
6d03d481 ST |
3049 | symtab, |
3050 | layout, | |
3051 | this, | |
3052 | object, | |
3053 | data_shndx, | |
3054 | prelocs, | |
3055 | reloc_count, | |
3056 | output_section, | |
3057 | needs_special_offset_handling, | |
3058 | local_symbol_count, | |
3059 | plocal_symbols); | |
3060 | } | |
3061 | ||
f5314dd5 DM |
3062 | // Scan relocations for a section. |
3063 | ||
3064 | template<int size, bool big_endian> | |
3065 | void | |
3066 | Target_sparc<size, big_endian>::scan_relocs( | |
f5314dd5 DM |
3067 | Symbol_table* symtab, |
3068 | Layout* layout, | |
6fa2a40b | 3069 | Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
3070 | unsigned int data_shndx, |
3071 | unsigned int sh_type, | |
3072 | const unsigned char* prelocs, | |
3073 | size_t reloc_count, | |
3074 | Output_section* output_section, | |
3075 | bool needs_special_offset_handling, | |
3076 | size_t local_symbol_count, | |
3077 | const unsigned char* plocal_symbols) | |
3078 | { | |
3079 | typedef Target_sparc<size, big_endian> Sparc; | |
4d625b70 CC |
3080 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
3081 | Classify_reloc; | |
f5314dd5 DM |
3082 | |
3083 | if (sh_type == elfcpp::SHT_REL) | |
3084 | { | |
3085 | gold_error(_("%s: unsupported REL reloc section"), | |
3086 | object->name().c_str()); | |
3087 | return; | |
3088 | } | |
3089 | ||
4d625b70 | 3090 | gold::scan_relocs<size, big_endian, Sparc, Scan, Classify_reloc>( |
f5314dd5 DM |
3091 | symtab, |
3092 | layout, | |
3093 | this, | |
3094 | object, | |
3095 | data_shndx, | |
3096 | prelocs, | |
3097 | reloc_count, | |
3098 | output_section, | |
3099 | needs_special_offset_handling, | |
3100 | local_symbol_count, | |
3101 | plocal_symbols); | |
3102 | } | |
3103 | ||
3104 | // Finalize the sections. | |
3105 | ||
3106 | template<int size, bool big_endian> | |
3107 | void | |
d5b40221 DK |
3108 | Target_sparc<size, big_endian>::do_finalize_sections( |
3109 | Layout* layout, | |
f59f41f3 | 3110 | const Input_objects*, |
8c2bf391 | 3111 | Symbol_table* symtab) |
f5314dd5 | 3112 | { |
8c2bf391 DM |
3113 | if (this->plt_) |
3114 | this->plt_->emit_pending_ifunc_relocs(); | |
3115 | ||
f5314dd5 | 3116 | // Fill in some more dynamic tags. |
ea715a34 ILT |
3117 | const Reloc_section* rel_plt = (this->plt_ == NULL |
3118 | ? NULL | |
3119 | : this->plt_->rel_plt()); | |
3120 | layout->add_target_dynamic_tags(false, this->plt_, rel_plt, | |
612a8d3d | 3121 | this->rela_dyn_, true, true); |
f5314dd5 DM |
3122 | |
3123 | // Emit any relocs we saved in an attempt to avoid generating COPY | |
3124 | // relocs. | |
12c0daef ILT |
3125 | if (this->copy_relocs_.any_saved_relocs()) |
3126 | this->copy_relocs_.emit(this->rela_dyn_section(layout)); | |
8c2bf391 DM |
3127 | |
3128 | if (parameters->doing_static_link() | |
3129 | && (this->plt_ == NULL || !this->plt_->has_ifunc_section())) | |
3130 | { | |
3131 | // If linking statically, make sure that the __rela_iplt symbols | |
3132 | // were defined if necessary, even if we didn't create a PLT. | |
3133 | static const Define_symbol_in_segment syms[] = | |
3134 | { | |
3135 | { | |
3136 | "__rela_iplt_start", // name | |
3137 | elfcpp::PT_LOAD, // segment_type | |
3138 | elfcpp::PF_W, // segment_flags_set | |
3139 | elfcpp::PF(0), // segment_flags_clear | |
3140 | 0, // value | |
3141 | 0, // size | |
3142 | elfcpp::STT_NOTYPE, // type | |
3143 | elfcpp::STB_GLOBAL, // binding | |
3144 | elfcpp::STV_HIDDEN, // visibility | |
3145 | 0, // nonvis | |
3146 | Symbol::SEGMENT_START, // offset_from_base | |
3147 | true // only_if_ref | |
3148 | }, | |
3149 | { | |
3150 | "__rela_iplt_end", // name | |
3151 | elfcpp::PT_LOAD, // segment_type | |
3152 | elfcpp::PF_W, // segment_flags_set | |
3153 | elfcpp::PF(0), // segment_flags_clear | |
3154 | 0, // value | |
3155 | 0, // size | |
3156 | elfcpp::STT_NOTYPE, // type | |
3157 | elfcpp::STB_GLOBAL, // binding | |
3158 | elfcpp::STV_HIDDEN, // visibility | |
3159 | 0, // nonvis | |
3160 | Symbol::SEGMENT_START, // offset_from_base | |
3161 | true // only_if_ref | |
3162 | } | |
3163 | }; | |
3164 | ||
3165 | symtab->define_symbols(layout, 2, syms, | |
3166 | layout->script_options()->saw_sections_clause()); | |
3167 | } | |
f5314dd5 DM |
3168 | } |
3169 | ||
3170 | // Perform a relocation. | |
3171 | ||
3172 | template<int size, bool big_endian> | |
3173 | inline bool | |
3174 | Target_sparc<size, big_endian>::Relocate::relocate( | |
3175 | const Relocate_info<size, big_endian>* relinfo, | |
91a65d2f | 3176 | unsigned int, |
f5314dd5 | 3177 | Target_sparc* target, |
031cdbed | 3178 | Output_section*, |
f5314dd5 | 3179 | size_t relnum, |
91a65d2f | 3180 | const unsigned char* preloc, |
f5314dd5 DM |
3181 | const Sized_symbol<size>* gsym, |
3182 | const Symbol_value<size>* psymval, | |
3183 | unsigned char* view, | |
3184 | typename elfcpp::Elf_types<size>::Elf_Addr address, | |
3185 | section_size_type view_size) | |
3186 | { | |
91a65d2f AM |
3187 | const elfcpp::Rela<size, big_endian> rela(preloc); |
3188 | unsigned int r_type = elfcpp::elf_r_type<size>(rela.get_r_info()); | |
2a1079e8 | 3189 | bool orig_is_ifunc = psymval->is_ifunc_symbol(); |
f5314dd5 DM |
3190 | r_type &= 0xff; |
3191 | ||
3192 | if (this->ignore_gd_add_) | |
3193 | { | |
3194 | if (r_type != elfcpp::R_SPARC_TLS_GD_ADD) | |
3195 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
3196 | _("missing expected TLS relocation")); | |
3197 | else | |
3198 | { | |
3199 | this->ignore_gd_add_ = false; | |
3200 | return false; | |
3201 | } | |
3202 | } | |
0e804863 ILT |
3203 | |
3204 | if (view == NULL) | |
3205 | return true; | |
3206 | ||
abd242a9 DM |
3207 | if (this->reloc_adjust_addr_ == view) |
3208 | view -= 4; | |
f5314dd5 DM |
3209 | |
3210 | typedef Sparc_relocate_functions<size, big_endian> Reloc; | |
8c2bf391 | 3211 | const Sized_relobj_file<size, big_endian>* object = relinfo->object; |
f5314dd5 DM |
3212 | |
3213 | // Pick the value to use for symbols defined in shared objects. | |
3214 | Symbol_value<size> symval; | |
3215 | if (gsym != NULL | |
95a2c8d6 | 3216 | && gsym->use_plt_offset(Scan::get_reference_flags(r_type))) |
f5314dd5 | 3217 | { |
2ea97941 | 3218 | elfcpp::Elf_Xword value; |
f5314dd5 | 3219 | |
19fec8c1 | 3220 | value = target->plt_address_for_global(gsym); |
f5314dd5 | 3221 | |
2ea97941 | 3222 | symval.set_output_value(value); |
f5314dd5 DM |
3223 | |
3224 | psymval = &symval; | |
3225 | } | |
2a1079e8 | 3226 | else if (gsym == NULL && orig_is_ifunc) |
8c2bf391 DM |
3227 | { |
3228 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
3229 | if (object->local_has_plt_offset(r_sym)) | |
3230 | { | |
19fec8c1 | 3231 | symval.set_output_value(target->plt_address_for_local(object, r_sym)); |
8c2bf391 DM |
3232 | psymval = &symval; |
3233 | } | |
3234 | } | |
f5314dd5 | 3235 | |
f5314dd5 DM |
3236 | const elfcpp::Elf_Xword addend = rela.get_r_addend(); |
3237 | ||
3238 | // Get the GOT offset if needed. Unlike i386 and x86_64, our GOT | |
3239 | // pointer points to the beginning, not the end, of the table. | |
3240 | // So we just use the plain offset. | |
f5314dd5 | 3241 | unsigned int got_offset = 0; |
2a1079e8 | 3242 | bool gdop_valid = false; |
f5314dd5 DM |
3243 | switch (r_type) |
3244 | { | |
024c4466 DM |
3245 | case elfcpp::R_SPARC_GOTDATA_OP: |
3246 | case elfcpp::R_SPARC_GOTDATA_OP_HIX22: | |
3247 | case elfcpp::R_SPARC_GOTDATA_OP_LOX10: | |
2a1079e8 DM |
3248 | // If this is local, we did not create a GOT entry because we |
3249 | // intend to transform this into a GOT relative relocation. | |
3250 | if (gsym == NULL | |
3251 | || (gsym->is_defined() | |
3252 | && !gsym->is_from_dynobj() | |
3253 | && !gsym->is_preemptible() | |
3254 | && !orig_is_ifunc)) | |
3255 | { | |
9eacb935 | 3256 | got_offset = psymval->value(object, addend) - target->got_address(); |
2a1079e8 DM |
3257 | gdop_valid = true; |
3258 | break; | |
3259 | } | |
f5314dd5 DM |
3260 | case elfcpp::R_SPARC_GOT10: |
3261 | case elfcpp::R_SPARC_GOT13: | |
3262 | case elfcpp::R_SPARC_GOT22: | |
3263 | if (gsym != NULL) | |
2e702c99 RM |
3264 | { |
3265 | gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD)); | |
3266 | got_offset = gsym->got_offset(GOT_TYPE_STANDARD); | |
3267 | } | |
f5314dd5 | 3268 | else |
2e702c99 RM |
3269 | { |
3270 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
3271 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)); | |
3272 | got_offset = object->local_got_offset(r_sym, GOT_TYPE_STANDARD); | |
3273 | } | |
f5314dd5 DM |
3274 | break; |
3275 | ||
3276 | default: | |
3277 | break; | |
3278 | } | |
3279 | ||
3280 | switch (r_type) | |
3281 | { | |
3282 | case elfcpp::R_SPARC_NONE: | |
3283 | case elfcpp::R_SPARC_REGISTER: | |
3284 | case elfcpp::R_SPARC_GNU_VTINHERIT: | |
3285 | case elfcpp::R_SPARC_GNU_VTENTRY: | |
3286 | break; | |
3287 | ||
3288 | case elfcpp::R_SPARC_8: | |
3289 | Relocate_functions<size, big_endian>::rela8(view, object, | |
3290 | psymval, addend); | |
3291 | break; | |
3292 | ||
3293 | case elfcpp::R_SPARC_16: | |
705b5121 DM |
3294 | if (rela.get_r_offset() & 0x1) |
3295 | { | |
3296 | // The assembler can sometimes emit unaligned relocations | |
2e702c99 | 3297 | // for dwarf2 cfi directives. |
705b5121 DM |
3298 | Reloc::ua16(view, object, psymval, addend); |
3299 | } | |
3300 | else | |
3301 | Relocate_functions<size, big_endian>::rela16(view, object, | |
3302 | psymval, addend); | |
f5314dd5 DM |
3303 | break; |
3304 | ||
3305 | case elfcpp::R_SPARC_32: | |
3306 | if (!parameters->options().output_is_position_independent()) | |
705b5121 DM |
3307 | { |
3308 | if (rela.get_r_offset() & 0x3) | |
3309 | { | |
3310 | // The assembler can sometimes emit unaligned relocations | |
2e702c99 | 3311 | // for dwarf2 cfi directives. |
705b5121 DM |
3312 | Reloc::ua32(view, object, psymval, addend); |
3313 | } | |
3314 | else | |
3315 | Relocate_functions<size, big_endian>::rela32(view, object, | |
3316 | psymval, addend); | |
3317 | } | |
f5314dd5 DM |
3318 | break; |
3319 | ||
3320 | case elfcpp::R_SPARC_DISP8: | |
3321 | Reloc::disp8(view, object, psymval, addend, address); | |
3322 | break; | |
3323 | ||
3324 | case elfcpp::R_SPARC_DISP16: | |
3325 | Reloc::disp16(view, object, psymval, addend, address); | |
3326 | break; | |
3327 | ||
3328 | case elfcpp::R_SPARC_DISP32: | |
3329 | Reloc::disp32(view, object, psymval, addend, address); | |
3330 | break; | |
3331 | ||
3332 | case elfcpp::R_SPARC_DISP64: | |
3333 | Reloc::disp64(view, object, psymval, addend, address); | |
3334 | break; | |
3335 | ||
3336 | case elfcpp::R_SPARC_WDISP30: | |
3337 | case elfcpp::R_SPARC_WPLT30: | |
3338 | Reloc::wdisp30(view, object, psymval, addend, address); | |
a5a5f7a3 DM |
3339 | if (target->may_relax()) |
3340 | relax_call(target, view, rela, view_size); | |
f5314dd5 DM |
3341 | break; |
3342 | ||
3343 | case elfcpp::R_SPARC_WDISP22: | |
3344 | Reloc::wdisp22(view, object, psymval, addend, address); | |
3345 | break; | |
3346 | ||
3347 | case elfcpp::R_SPARC_WDISP19: | |
3348 | Reloc::wdisp19(view, object, psymval, addend, address); | |
3349 | break; | |
3350 | ||
3351 | case elfcpp::R_SPARC_WDISP16: | |
3352 | Reloc::wdisp16(view, object, psymval, addend, address); | |
3353 | break; | |
3354 | ||
2615994e DM |
3355 | case elfcpp::R_SPARC_WDISP10: |
3356 | Reloc::wdisp10(view, object, psymval, addend, address); | |
3357 | break; | |
3358 | ||
f5314dd5 DM |
3359 | case elfcpp::R_SPARC_HI22: |
3360 | Reloc::hi22(view, object, psymval, addend); | |
3361 | break; | |
3362 | ||
3363 | case elfcpp::R_SPARC_22: | |
3364 | Reloc::rela32_22(view, object, psymval, addend); | |
3365 | break; | |
3366 | ||
3367 | case elfcpp::R_SPARC_13: | |
3368 | Reloc::rela32_13(view, object, psymval, addend); | |
3369 | break; | |
3370 | ||
3371 | case elfcpp::R_SPARC_LO10: | |
3372 | Reloc::lo10(view, object, psymval, addend); | |
3373 | break; | |
3374 | ||
3375 | case elfcpp::R_SPARC_GOT10: | |
3376 | Reloc::lo10(view, got_offset, addend); | |
3377 | break; | |
3378 | ||
024c4466 | 3379 | case elfcpp::R_SPARC_GOTDATA_OP: |
2a1079e8 DM |
3380 | if (gdop_valid) |
3381 | { | |
3382 | typedef typename elfcpp::Swap<32, true>::Valtype Insntype; | |
3383 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
3384 | Insntype val; | |
3385 | ||
3386 | // {ld,ldx} [%rs1 + %rs2], %rd --> add %rs1, %rs2, %rd | |
3387 | val = elfcpp::Swap<32, true>::readval(wv); | |
3388 | val = 0x80000000 | (val & 0x3e07c01f); | |
3389 | elfcpp::Swap<32, true>::writeval(wv, val); | |
3390 | } | |
024c4466 DM |
3391 | break; |
3392 | ||
3393 | case elfcpp::R_SPARC_GOTDATA_OP_LOX10: | |
2a1079e8 DM |
3394 | if (gdop_valid) |
3395 | { | |
9eacb935 | 3396 | Reloc::gdop_lox10(view, got_offset); |
2a1079e8 DM |
3397 | break; |
3398 | } | |
3399 | /* Fall through. */ | |
f5314dd5 DM |
3400 | case elfcpp::R_SPARC_GOT13: |
3401 | Reloc::rela32_13(view, got_offset, addend); | |
3402 | break; | |
3403 | ||
024c4466 | 3404 | case elfcpp::R_SPARC_GOTDATA_OP_HIX22: |
2a1079e8 DM |
3405 | if (gdop_valid) |
3406 | { | |
9eacb935 | 3407 | Reloc::gdop_hix22(view, got_offset); |
2a1079e8 DM |
3408 | break; |
3409 | } | |
3410 | /* Fall through. */ | |
f5314dd5 DM |
3411 | case elfcpp::R_SPARC_GOT22: |
3412 | Reloc::hi22(view, got_offset, addend); | |
3413 | break; | |
3414 | ||
3415 | case elfcpp::R_SPARC_PC10: | |
3416 | Reloc::pc10(view, object, psymval, addend, address); | |
3417 | break; | |
3418 | ||
3419 | case elfcpp::R_SPARC_PC22: | |
3420 | Reloc::pc22(view, object, psymval, addend, address); | |
3421 | break; | |
3422 | ||
3423 | case elfcpp::R_SPARC_TLS_DTPOFF32: | |
3424 | case elfcpp::R_SPARC_UA32: | |
3425 | Reloc::ua32(view, object, psymval, addend); | |
3426 | break; | |
3427 | ||
3428 | case elfcpp::R_SPARC_PLT64: | |
3429 | Relocate_functions<size, big_endian>::rela64(view, object, | |
3430 | psymval, addend); | |
3431 | break; | |
3432 | ||
3433 | case elfcpp::R_SPARC_PLT32: | |
3434 | Relocate_functions<size, big_endian>::rela32(view, object, | |
3435 | psymval, addend); | |
3436 | break; | |
3437 | ||
3438 | case elfcpp::R_SPARC_HIPLT22: | |
3439 | Reloc::hi22(view, object, psymval, addend); | |
3440 | break; | |
3441 | ||
3442 | case elfcpp::R_SPARC_LOPLT10: | |
3443 | Reloc::lo10(view, object, psymval, addend); | |
3444 | break; | |
3445 | ||
3446 | case elfcpp::R_SPARC_PCPLT32: | |
3447 | Reloc::disp32(view, object, psymval, addend, address); | |
3448 | break; | |
3449 | ||
3450 | case elfcpp::R_SPARC_PCPLT22: | |
3451 | Reloc::pcplt22(view, object, psymval, addend, address); | |
3452 | break; | |
3453 | ||
3454 | case elfcpp::R_SPARC_PCPLT10: | |
3455 | Reloc::lo10(view, object, psymval, addend, address); | |
3456 | break; | |
3457 | ||
3458 | case elfcpp::R_SPARC_64: | |
3459 | if (!parameters->options().output_is_position_independent()) | |
705b5121 DM |
3460 | { |
3461 | if (rela.get_r_offset() & 0x7) | |
3462 | { | |
3463 | // The assembler can sometimes emit unaligned relocations | |
2e702c99 | 3464 | // for dwarf2 cfi directives. |
705b5121 DM |
3465 | Reloc::ua64(view, object, psymval, addend); |
3466 | } | |
3467 | else | |
3468 | Relocate_functions<size, big_endian>::rela64(view, object, | |
3469 | psymval, addend); | |
3470 | } | |
f5314dd5 DM |
3471 | break; |
3472 | ||
3473 | case elfcpp::R_SPARC_OLO10: | |
3474 | { | |
3475 | unsigned int addend2 = rela.get_r_info() & 0xffffffff; | |
3476 | addend2 = ((addend2 >> 8) ^ 0x800000) - 0x800000; | |
3477 | Reloc::olo10(view, object, psymval, addend, addend2); | |
3478 | } | |
3479 | break; | |
3480 | ||
3481 | case elfcpp::R_SPARC_HH22: | |
3482 | Reloc::hh22(view, object, psymval, addend); | |
3483 | break; | |
3484 | ||
3485 | case elfcpp::R_SPARC_PC_HH22: | |
3486 | Reloc::pc_hh22(view, object, psymval, addend, address); | |
3487 | break; | |
3488 | ||
3489 | case elfcpp::R_SPARC_HM10: | |
3490 | Reloc::hm10(view, object, psymval, addend); | |
3491 | break; | |
3492 | ||
3493 | case elfcpp::R_SPARC_PC_HM10: | |
3494 | Reloc::pc_hm10(view, object, psymval, addend, address); | |
3495 | break; | |
3496 | ||
3497 | case elfcpp::R_SPARC_LM22: | |
3498 | Reloc::hi22(view, object, psymval, addend); | |
3499 | break; | |
3500 | ||
3501 | case elfcpp::R_SPARC_PC_LM22: | |
3502 | Reloc::pcplt22(view, object, psymval, addend, address); | |
3503 | break; | |
3504 | ||
3505 | case elfcpp::R_SPARC_11: | |
3506 | Reloc::rela32_11(view, object, psymval, addend); | |
3507 | break; | |
3508 | ||
3509 | case elfcpp::R_SPARC_10: | |
3510 | Reloc::rela32_10(view, object, psymval, addend); | |
3511 | break; | |
3512 | ||
3513 | case elfcpp::R_SPARC_7: | |
3514 | Reloc::rela32_7(view, object, psymval, addend); | |
3515 | break; | |
3516 | ||
3517 | case elfcpp::R_SPARC_6: | |
3518 | Reloc::rela32_6(view, object, psymval, addend); | |
3519 | break; | |
3520 | ||
3521 | case elfcpp::R_SPARC_5: | |
3522 | Reloc::rela32_5(view, object, psymval, addend); | |
3523 | break; | |
3524 | ||
3525 | case elfcpp::R_SPARC_HIX22: | |
3526 | Reloc::hix22(view, object, psymval, addend); | |
3527 | break; | |
3528 | ||
3529 | case elfcpp::R_SPARC_LOX10: | |
3530 | Reloc::lox10(view, object, psymval, addend); | |
3531 | break; | |
3532 | ||
2615994e DM |
3533 | case elfcpp::R_SPARC_H34: |
3534 | Reloc::h34(view, object, psymval, addend); | |
3535 | break; | |
3536 | ||
f5314dd5 DM |
3537 | case elfcpp::R_SPARC_H44: |
3538 | Reloc::h44(view, object, psymval, addend); | |
3539 | break; | |
3540 | ||
3541 | case elfcpp::R_SPARC_M44: | |
3542 | Reloc::m44(view, object, psymval, addend); | |
3543 | break; | |
3544 | ||
3545 | case elfcpp::R_SPARC_L44: | |
3546 | Reloc::l44(view, object, psymval, addend); | |
3547 | break; | |
3548 | ||
3549 | case elfcpp::R_SPARC_TLS_DTPOFF64: | |
3550 | case elfcpp::R_SPARC_UA64: | |
3551 | Reloc::ua64(view, object, psymval, addend); | |
3552 | break; | |
3553 | ||
3554 | case elfcpp::R_SPARC_UA16: | |
3555 | Reloc::ua16(view, object, psymval, addend); | |
3556 | break; | |
3557 | ||
3558 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
3559 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
3560 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
3561 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
3562 | case elfcpp::R_SPARC_TLS_LDM_HI22: | |
3563 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
3564 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
3565 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
3566 | case elfcpp::R_SPARC_TLS_LDO_HIX22: | |
3567 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
3568 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
3569 | case elfcpp::R_SPARC_TLS_IE_HI22: | |
3570 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
3571 | case elfcpp::R_SPARC_TLS_IE_LD: | |
3572 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
9efe6174 | 3573 | case elfcpp::R_SPARC_TLS_IE_ADD: |
f5314dd5 DM |
3574 | case elfcpp::R_SPARC_TLS_LE_HIX22: |
3575 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
3576 | this->relocate_tls(relinfo, target, relnum, rela, | |
3577 | r_type, gsym, psymval, view, | |
3578 | address, view_size); | |
3579 | break; | |
3580 | ||
3581 | case elfcpp::R_SPARC_COPY: | |
3582 | case elfcpp::R_SPARC_GLOB_DAT: | |
3583 | case elfcpp::R_SPARC_JMP_SLOT: | |
8c2bf391 | 3584 | case elfcpp::R_SPARC_JMP_IREL: |
f5314dd5 | 3585 | case elfcpp::R_SPARC_RELATIVE: |
8c2bf391 | 3586 | case elfcpp::R_SPARC_IRELATIVE: |
f5314dd5 DM |
3587 | // These are outstanding tls relocs, which are unexpected when |
3588 | // linking. | |
3589 | case elfcpp::R_SPARC_TLS_DTPMOD64: | |
3590 | case elfcpp::R_SPARC_TLS_DTPMOD32: | |
3591 | case elfcpp::R_SPARC_TLS_TPOFF64: | |
3592 | case elfcpp::R_SPARC_TLS_TPOFF32: | |
3593 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
3594 | _("unexpected reloc %u in object file"), | |
3595 | r_type); | |
3596 | break; | |
3597 | ||
3598 | default: | |
3599 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
3600 | _("unsupported reloc %u"), | |
3601 | r_type); | |
3602 | break; | |
3603 | } | |
3604 | ||
3605 | return true; | |
3606 | } | |
3607 | ||
3608 | // Perform a TLS relocation. | |
3609 | ||
3610 | template<int size, bool big_endian> | |
3611 | inline void | |
3612 | Target_sparc<size, big_endian>::Relocate::relocate_tls( | |
3613 | const Relocate_info<size, big_endian>* relinfo, | |
3614 | Target_sparc<size, big_endian>* target, | |
3615 | size_t relnum, | |
3616 | const elfcpp::Rela<size, big_endian>& rela, | |
3617 | unsigned int r_type, | |
3618 | const Sized_symbol<size>* gsym, | |
3619 | const Symbol_value<size>* psymval, | |
3620 | unsigned char* view, | |
3621 | typename elfcpp::Elf_types<size>::Elf_Addr address, | |
3622 | section_size_type) | |
3623 | { | |
3624 | Output_segment* tls_segment = relinfo->layout->tls_segment(); | |
3625 | typedef Sparc_relocate_functions<size, big_endian> Reloc; | |
6fa2a40b | 3626 | const Sized_relobj_file<size, big_endian>* object = relinfo->object; |
f5314dd5 DM |
3627 | typedef typename elfcpp::Swap<32, true>::Valtype Insntype; |
3628 | ||
3629 | const elfcpp::Elf_Xword addend = rela.get_r_addend(); | |
2ea97941 | 3630 | typename elfcpp::Elf_types<size>::Elf_Addr value = psymval->value(object, 0); |
f5314dd5 DM |
3631 | |
3632 | const bool is_final = | |
3633 | (gsym == NULL | |
3634 | ? !parameters->options().output_is_position_independent() | |
3635 | : gsym->final_value_is_known()); | |
3636 | const tls::Tls_optimization optimized_type | |
3637 | = optimize_tls_reloc(is_final, r_type); | |
3638 | ||
3639 | switch (r_type) | |
3640 | { | |
3641 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
3642 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
3643 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
3644 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
3645 | if (optimized_type == tls::TLSOPT_TO_LE) | |
3646 | { | |
3647 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
3648 | Insntype val; | |
3649 | ||
2ea97941 | 3650 | value -= tls_segment->memsz(); |
f5314dd5 DM |
3651 | |
3652 | switch (r_type) | |
3653 | { | |
3654 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
3655 | // TLS_GD_HI22 --> TLS_LE_HIX22 | |
2ea97941 | 3656 | Reloc::hix22(view, value, addend); |
f5314dd5 DM |
3657 | break; |
3658 | ||
3659 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
3660 | // TLS_GD_LO10 --> TLS_LE_LOX10 | |
2ea97941 | 3661 | Reloc::lox10(view, value, addend); |
f5314dd5 DM |
3662 | break; |
3663 | ||
3664 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
3665 | // add %reg1, %reg2, %reg3 --> mov %g7, %reg2, %reg3 | |
3666 | val = elfcpp::Swap<32, true>::readval(wv); | |
3667 | val = (val & ~0x7c000) | 0x1c000; | |
3668 | elfcpp::Swap<32, true>::writeval(wv, val); | |
3669 | break; | |
3670 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
3671 | // call __tls_get_addr --> nop | |
3672 | elfcpp::Swap<32, true>::writeval(wv, sparc_nop); | |
3673 | break; | |
3674 | } | |
3675 | break; | |
3676 | } | |
3677 | else | |
2e702c99 RM |
3678 | { |
3679 | unsigned int got_type = (optimized_type == tls::TLSOPT_TO_IE | |
3680 | ? GOT_TYPE_TLS_OFFSET | |
3681 | : GOT_TYPE_TLS_PAIR); | |
3682 | if (gsym != NULL) | |
3683 | { | |
3684 | gold_assert(gsym->has_got_offset(got_type)); | |
3685 | value = gsym->got_offset(got_type); | |
3686 | } | |
3687 | else | |
3688 | { | |
3689 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
3690 | gold_assert(object->local_has_got_offset(r_sym, got_type)); | |
3691 | value = object->local_got_offset(r_sym, got_type); | |
3692 | } | |
3693 | if (optimized_type == tls::TLSOPT_TO_IE) | |
f5314dd5 DM |
3694 | { |
3695 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
3696 | Insntype val; | |
3697 | ||
3698 | switch (r_type) | |
3699 | { | |
3700 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
3701 | // TLS_GD_HI22 --> TLS_IE_HI22 | |
2ea97941 | 3702 | Reloc::hi22(view, value, addend); |
f5314dd5 DM |
3703 | break; |
3704 | ||
3705 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
3706 | // TLS_GD_LO10 --> TLS_IE_LO10 | |
2ea97941 | 3707 | Reloc::lo10(view, value, addend); |
f5314dd5 DM |
3708 | break; |
3709 | ||
3710 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
3711 | // add %reg1, %reg2, %reg3 --> ld [%reg1 + %reg2], %reg3 | |
3712 | val = elfcpp::Swap<32, true>::readval(wv); | |
3713 | ||
3714 | if (size == 64) | |
3715 | val |= 0xc0580000; | |
3716 | else | |
3717 | val |= 0xc0000000; | |
3718 | ||
3719 | elfcpp::Swap<32, true>::writeval(wv, val); | |
3720 | break; | |
3721 | ||
3722 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
3723 | // The compiler can put the TLS_GD_ADD instruction | |
3724 | // into the delay slot of the call. If so, we need | |
3725 | // to transpose the two instructions so that the | |
9b547ce6 | 3726 | // new sequence works properly. |
f5314dd5 DM |
3727 | // |
3728 | // The test we use is if the instruction in the | |
3729 | // delay slot is an add with destination register | |
3730 | // equal to %o0 | |
3731 | val = elfcpp::Swap<32, true>::readval(wv + 1); | |
3732 | if ((val & 0x81f80000) == 0x80000000 | |
3733 | && ((val >> 25) & 0x1f) == 0x8) | |
3734 | { | |
3735 | if (size == 64) | |
3736 | val |= 0xc0580000; | |
3737 | else | |
3738 | val |= 0xc0000000; | |
3739 | ||
3740 | elfcpp::Swap<32, true>::writeval(wv, val); | |
3741 | ||
3742 | wv += 1; | |
3743 | this->ignore_gd_add_ = true; | |
3744 | } | |
abd242a9 DM |
3745 | else |
3746 | { | |
3747 | // Even if the delay slot isn't the TLS_GD_ADD | |
3748 | // instruction, we still have to handle the case | |
3749 | // where it sets up %o0 in some other way. | |
3750 | elfcpp::Swap<32, true>::writeval(wv, val); | |
3751 | wv += 1; | |
3752 | this->reloc_adjust_addr_ = view + 4; | |
3753 | } | |
f5314dd5 DM |
3754 | // call __tls_get_addr --> add %g7, %o0, %o0 |
3755 | elfcpp::Swap<32, true>::writeval(wv, 0x9001c008); | |
3756 | break; | |
3757 | } | |
2e702c99 | 3758 | break; |
f5314dd5 | 3759 | } |
2e702c99 RM |
3760 | else if (optimized_type == tls::TLSOPT_NONE) |
3761 | { | |
f5314dd5 DM |
3762 | switch (r_type) |
3763 | { | |
3764 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
2ea97941 | 3765 | Reloc::hi22(view, value, addend); |
f5314dd5 DM |
3766 | break; |
3767 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2ea97941 | 3768 | Reloc::lo10(view, value, addend); |
f5314dd5 DM |
3769 | break; |
3770 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
3771 | break; | |
3772 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
3773 | { | |
3774 | Symbol_value<size> symval; | |
2ea97941 | 3775 | elfcpp::Elf_Xword value; |
f5314dd5 DM |
3776 | Symbol* tsym; |
3777 | ||
3778 | tsym = target->tls_get_addr_sym_; | |
3779 | gold_assert(tsym); | |
2ea97941 ILT |
3780 | value = (target->plt_section()->address() + |
3781 | tsym->plt_offset()); | |
3782 | symval.set_output_value(value); | |
f5314dd5 DM |
3783 | Reloc::wdisp30(view, object, &symval, addend, address); |
3784 | } | |
3785 | break; | |
3786 | } | |
3787 | break; | |
2e702c99 RM |
3788 | } |
3789 | } | |
f5314dd5 DM |
3790 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
3791 | _("unsupported reloc %u"), | |
3792 | r_type); | |
3793 | break; | |
3794 | ||
3795 | case elfcpp::R_SPARC_TLS_LDM_HI22: | |
3796 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
3797 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
3798 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
3799 | if (optimized_type == tls::TLSOPT_TO_LE) | |
3800 | { | |
3801 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
3802 | ||
3803 | switch (r_type) | |
3804 | { | |
3805 | case elfcpp::R_SPARC_TLS_LDM_HI22: | |
3806 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
3807 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
3808 | elfcpp::Swap<32, true>::writeval(wv, sparc_nop); | |
3809 | break; | |
3810 | ||
3811 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
3812 | elfcpp::Swap<32, true>::writeval(wv, sparc_mov_g0_o0); | |
3813 | break; | |
3814 | } | |
3815 | break; | |
3816 | } | |
3817 | else if (optimized_type == tls::TLSOPT_NONE) | |
2e702c99 RM |
3818 | { |
3819 | // Relocate the field with the offset of the GOT entry for | |
3820 | // the module index. | |
3821 | unsigned int got_offset; | |
f5314dd5 DM |
3822 | |
3823 | got_offset = target->got_mod_index_entry(NULL, NULL, NULL); | |
3824 | switch (r_type) | |
3825 | { | |
3826 | case elfcpp::R_SPARC_TLS_LDM_HI22: | |
3827 | Reloc::hi22(view, got_offset, addend); | |
3828 | break; | |
3829 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
3830 | Reloc::lo10(view, got_offset, addend); | |
3831 | break; | |
3832 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
3833 | break; | |
3834 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
3835 | { | |
3836 | Symbol_value<size> symval; | |
2ea97941 | 3837 | elfcpp::Elf_Xword value; |
f5314dd5 DM |
3838 | Symbol* tsym; |
3839 | ||
3840 | tsym = target->tls_get_addr_sym_; | |
3841 | gold_assert(tsym); | |
2ea97941 ILT |
3842 | value = (target->plt_section()->address() + |
3843 | tsym->plt_offset()); | |
3844 | symval.set_output_value(value); | |
f5314dd5 DM |
3845 | Reloc::wdisp30(view, object, &symval, addend, address); |
3846 | } | |
3847 | break; | |
3848 | } | |
2e702c99 RM |
3849 | break; |
3850 | } | |
f5314dd5 DM |
3851 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
3852 | _("unsupported reloc %u"), | |
3853 | r_type); | |
3854 | break; | |
3855 | ||
3856 | // These relocs can appear in debugging sections, in which case | |
3857 | // we won't see the TLS_LDM relocs. The local_dynamic_type | |
3858 | // field tells us this. | |
3859 | case elfcpp::R_SPARC_TLS_LDO_HIX22: | |
3860 | if (optimized_type == tls::TLSOPT_TO_LE) | |
3861 | { | |
2ea97941 ILT |
3862 | value -= tls_segment->memsz(); |
3863 | Reloc::hix22(view, value, addend); | |
f5314dd5 DM |
3864 | } |
3865 | else | |
2ea97941 | 3866 | Reloc::ldo_hix22(view, value, addend); |
f5314dd5 DM |
3867 | break; |
3868 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
3869 | if (optimized_type == tls::TLSOPT_TO_LE) | |
3870 | { | |
2ea97941 ILT |
3871 | value -= tls_segment->memsz(); |
3872 | Reloc::lox10(view, value, addend); | |
f5314dd5 DM |
3873 | } |
3874 | else | |
2ea97941 | 3875 | Reloc::ldo_lox10(view, value, addend); |
f5314dd5 DM |
3876 | break; |
3877 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
3878 | if (optimized_type == tls::TLSOPT_TO_LE) | |
3879 | { | |
3880 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
3881 | Insntype val; | |
3882 | ||
3883 | // add %reg1, %reg2, %reg3 --> add %g7, %reg2, %reg3 | |
3884 | val = elfcpp::Swap<32, true>::readval(wv); | |
3885 | val = (val & ~0x7c000) | 0x1c000; | |
3886 | elfcpp::Swap<32, true>::writeval(wv, val); | |
3887 | } | |
3888 | break; | |
3889 | ||
3890 | // When optimizing IE --> LE, the only relocation that is handled | |
3891 | // differently is R_SPARC_TLS_IE_LD, it is rewritten from | |
3892 | // 'ld{,x} [rs1 + rs2], rd' into 'mov rs2, rd' or simply a NOP is | |
3893 | // rs2 and rd are the same. | |
3894 | case elfcpp::R_SPARC_TLS_IE_LD: | |
3895 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
3896 | if (optimized_type == tls::TLSOPT_TO_LE) | |
3897 | { | |
3898 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
3899 | Insntype val = elfcpp::Swap<32, true>::readval(wv); | |
3900 | Insntype rs2 = val & 0x1f; | |
3901 | Insntype rd = (val >> 25) & 0x1f; | |
3902 | ||
3903 | if (rs2 == rd) | |
3904 | val = sparc_nop; | |
3905 | else | |
3906 | val = sparc_mov | (val & 0x3e00001f); | |
3907 | ||
3908 | elfcpp::Swap<32, true>::writeval(wv, val); | |
3909 | } | |
3910 | break; | |
3911 | ||
3912 | case elfcpp::R_SPARC_TLS_IE_HI22: | |
3913 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
3914 | if (optimized_type == tls::TLSOPT_TO_LE) | |
3915 | { | |
2ea97941 | 3916 | value -= tls_segment->memsz(); |
f5314dd5 DM |
3917 | switch (r_type) |
3918 | { | |
3919 | case elfcpp::R_SPARC_TLS_IE_HI22: | |
3920 | // IE_HI22 --> LE_HIX22 | |
2ea97941 | 3921 | Reloc::hix22(view, value, addend); |
f5314dd5 DM |
3922 | break; |
3923 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
3924 | // IE_LO10 --> LE_LOX10 | |
2ea97941 | 3925 | Reloc::lox10(view, value, addend); |
f5314dd5 DM |
3926 | break; |
3927 | } | |
3928 | break; | |
3929 | } | |
3930 | else if (optimized_type == tls::TLSOPT_NONE) | |
3931 | { | |
3932 | // Relocate the field with the offset of the GOT entry for | |
3933 | // the tp-relative offset of the symbol. | |
3934 | if (gsym != NULL) | |
3935 | { | |
3936 | gold_assert(gsym->has_got_offset(GOT_TYPE_TLS_OFFSET)); | |
2ea97941 | 3937 | value = gsym->got_offset(GOT_TYPE_TLS_OFFSET); |
f5314dd5 DM |
3938 | } |
3939 | else | |
3940 | { | |
3941 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
3942 | gold_assert(object->local_has_got_offset(r_sym, | |
3943 | GOT_TYPE_TLS_OFFSET)); | |
2ea97941 ILT |
3944 | value = object->local_got_offset(r_sym, |
3945 | GOT_TYPE_TLS_OFFSET); | |
f5314dd5 DM |
3946 | } |
3947 | switch (r_type) | |
3948 | { | |
3949 | case elfcpp::R_SPARC_TLS_IE_HI22: | |
2ea97941 | 3950 | Reloc::hi22(view, value, addend); |
f5314dd5 DM |
3951 | break; |
3952 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2ea97941 | 3953 | Reloc::lo10(view, value, addend); |
f5314dd5 DM |
3954 | break; |
3955 | } | |
3956 | break; | |
3957 | } | |
3958 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
3959 | _("unsupported reloc %u"), | |
3960 | r_type); | |
3961 | break; | |
3962 | ||
9efe6174 ILT |
3963 | case elfcpp::R_SPARC_TLS_IE_ADD: |
3964 | // This seems to be mainly so that we can find the addition | |
3965 | // instruction if there is one. There doesn't seem to be any | |
3966 | // actual relocation to apply. | |
3967 | break; | |
3968 | ||
f5314dd5 DM |
3969 | case elfcpp::R_SPARC_TLS_LE_HIX22: |
3970 | // If we're creating a shared library, a dynamic relocation will | |
3971 | // have been created for this location, so do not apply it now. | |
3972 | if (!parameters->options().shared()) | |
3973 | { | |
2ea97941 ILT |
3974 | value -= tls_segment->memsz(); |
3975 | Reloc::hix22(view, value, addend); | |
f5314dd5 DM |
3976 | } |
3977 | break; | |
3978 | ||
3979 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
3980 | // If we're creating a shared library, a dynamic relocation will | |
3981 | // have been created for this location, so do not apply it now. | |
3982 | if (!parameters->options().shared()) | |
3983 | { | |
2ea97941 ILT |
3984 | value -= tls_segment->memsz(); |
3985 | Reloc::lox10(view, value, addend); | |
f5314dd5 DM |
3986 | } |
3987 | break; | |
3988 | } | |
3989 | } | |
3990 | ||
a5a5f7a3 DM |
3991 | // Relax a call instruction. |
3992 | ||
3993 | template<int size, bool big_endian> | |
3994 | inline void | |
3995 | Target_sparc<size, big_endian>::Relocate::relax_call( | |
3996 | Target_sparc<size, big_endian>* target, | |
3997 | unsigned char* view, | |
3998 | const elfcpp::Rela<size, big_endian>& rela, | |
3999 | section_size_type view_size) | |
4000 | { | |
4001 | typedef typename elfcpp::Swap<32, true>::Valtype Insntype; | |
4002 | Insntype *wv = reinterpret_cast<Insntype*>(view); | |
4003 | Insntype call_insn, delay_insn, set_insn; | |
4004 | uint32_t op3, reg, off; | |
4005 | ||
4006 | // This code tries to relax call instructions that meet | |
4007 | // certain criteria. | |
4008 | // | |
4009 | // The first criteria is that the call must be such that the return | |
4010 | // address which the call writes into %o7 is unused. Two sequences | |
4011 | // meet this criteria, and are used to implement tail calls. | |
4012 | // | |
4013 | // Leaf function tail call: | |
4014 | // | |
4015 | // or %o7, %g0, %ANY_REG | |
4016 | // call FUNC | |
4017 | // or %ANY_REG, %g0, %o7 | |
4018 | // | |
4019 | // Non-leaf function tail call: | |
4020 | // | |
4021 | // call FUNC | |
4022 | // restore | |
4023 | // | |
4024 | // The second criteria is that the call destination is close. If | |
4025 | // the displacement can fit in a signed 22-bit immediate field of a | |
4026 | // pre-V9 branch, we can do it. If we are generating a 64-bit | |
4027 | // object or a 32-bit object with ELF machine type EF_SPARC32PLUS, | |
4028 | // and the displacement fits in a signed 19-bit immediate field, | |
4029 | // then we can use a V9 branch. | |
4030 | ||
4031 | // Make sure the delay instruction can be safely accessed. | |
4032 | if (rela.get_r_offset() + 8 > view_size) | |
4033 | return; | |
4034 | ||
4035 | call_insn = elfcpp::Swap<32, true>::readval(wv); | |
4036 | delay_insn = elfcpp::Swap<32, true>::readval(wv + 1); | |
4037 | ||
4038 | // Make sure it is really a call instruction. | |
4039 | if (((call_insn >> 30) & 0x3) != 1) | |
4040 | return; | |
4041 | ||
4042 | if (((delay_insn >> 30) & 0x3) != 2) | |
4043 | return; | |
4044 | ||
4045 | // Accept only a restore or an integer arithmetic operation whose | |
4046 | // sole side effect is to write the %o7 register (and perhaps set | |
4047 | // the condition codes, which are considered clobbered across | |
4048 | // function calls). | |
4049 | // | |
4050 | // For example, we don't want to match a tagged addition or | |
4051 | // subtraction. We also don't want to match something like a | |
4052 | // divide. | |
4053 | // | |
4054 | // Specifically we accept add{,cc}, and{,cc}, or{,cc}, | |
4055 | // xor{,cc}, sub{,cc}, andn{,cc}, orn{,cc}, and xnor{,cc}. | |
4056 | ||
4057 | op3 = (delay_insn >> 19) & 0x3f; | |
4058 | reg = (delay_insn >> 25) & 0x1f; | |
4059 | if (op3 != 0x3d | |
4060 | && ((op3 & 0x28) != 0 || reg != 15)) | |
4061 | return; | |
4062 | ||
4063 | // For non-restore instructions, make sure %o7 isn't | |
4064 | // an input. | |
4065 | if (op3 != 0x3d) | |
4066 | { | |
4067 | // First check RS1 | |
4068 | reg = (delay_insn >> 14) & 0x15; | |
4069 | if (reg == 15) | |
4070 | return; | |
4071 | ||
4072 | // And if non-immediate, check RS2 | |
4073 | if (((delay_insn >> 13) & 1) == 0) | |
4074 | { | |
4075 | reg = (delay_insn & 0x1f); | |
4076 | if (reg == 15) | |
4077 | return; | |
4078 | } | |
4079 | } | |
4080 | ||
4081 | // Now check the branch distance. We are called after the | |
4082 | // call has been relocated, so we just have to peek at the | |
4083 | // offset contained in the instruction. | |
4084 | off = call_insn & 0x3fffffff; | |
4085 | if ((off & 0x3fe00000) != 0 | |
4086 | && (off & 0x3fe00000) != 0x3fe00000) | |
4087 | return; | |
4088 | ||
4089 | if ((size == 64 || target->elf_machine_ == elfcpp::EM_SPARC32PLUS) | |
4090 | && ((off & 0x3c0000) == 0 | |
4091 | || (off & 0x3c0000) == 0x3c0000)) | |
4092 | { | |
4093 | // ba,pt %xcc, FUNC | |
4094 | call_insn = 0x10680000 | (off & 0x07ffff); | |
4095 | } | |
4096 | else | |
4097 | { | |
4098 | // ba FUNC | |
4099 | call_insn = 0x10800000 | (off & 0x3fffff); | |
4100 | } | |
4101 | elfcpp::Swap<32, true>::writeval(wv, call_insn); | |
4102 | ||
4103 | // See if we can NOP out the delay slot instruction. We peek | |
4104 | // at the instruction before the call to make sure we're dealing | |
4105 | // with exactly the: | |
4106 | // | |
4107 | // or %o7, %g0, %ANY_REG | |
4108 | // call | |
4109 | // or %ANY_REG, %g0, %o7 | |
4110 | // | |
4111 | // case. Otherwise this might be a tricky piece of hand written | |
4112 | // assembler calculating %o7 in some non-trivial way, and therefore | |
4113 | // we can't be sure that NOP'ing out the delay slot is safe. | |
4114 | if (op3 == 0x02 | |
4115 | && rela.get_r_offset() >= 4) | |
4116 | { | |
4117 | if ((delay_insn & ~(0x1f << 14)) != 0x9e100000) | |
4118 | return; | |
4119 | ||
4120 | set_insn = elfcpp::Swap<32, true>::readval(wv - 1); | |
4121 | if ((set_insn & ~(0x1f << 25)) != 0x8013c000) | |
4122 | return; | |
4123 | ||
4124 | reg = (set_insn >> 25) & 0x1f; | |
4125 | if (reg == 0 || reg == 15) | |
4126 | return; | |
4127 | if (reg != ((delay_insn >> 14) & 0x1f)) | |
4128 | return; | |
4129 | ||
4130 | // All tests pass, nop it out. | |
4131 | elfcpp::Swap<32, true>::writeval(wv + 1, sparc_nop); | |
4132 | } | |
4133 | } | |
4134 | ||
f5314dd5 DM |
4135 | // Relocate section data. |
4136 | ||
4137 | template<int size, bool big_endian> | |
4138 | void | |
4139 | Target_sparc<size, big_endian>::relocate_section( | |
4140 | const Relocate_info<size, big_endian>* relinfo, | |
4141 | unsigned int sh_type, | |
4142 | const unsigned char* prelocs, | |
4143 | size_t reloc_count, | |
4144 | Output_section* output_section, | |
4145 | bool needs_special_offset_handling, | |
4146 | unsigned char* view, | |
4147 | typename elfcpp::Elf_types<size>::Elf_Addr address, | |
364c7fa5 ILT |
4148 | section_size_type view_size, |
4149 | const Reloc_symbol_changes* reloc_symbol_changes) | |
f5314dd5 DM |
4150 | { |
4151 | typedef Target_sparc<size, big_endian> Sparc; | |
4152 | typedef typename Target_sparc<size, big_endian>::Relocate Sparc_relocate; | |
4d625b70 CC |
4153 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
4154 | Classify_reloc; | |
f5314dd5 DM |
4155 | |
4156 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
4157 | ||
4d625b70 CC |
4158 | gold::relocate_section<size, big_endian, Sparc, Sparc_relocate, |
4159 | gold::Default_comdat_behavior, Classify_reloc>( | |
f5314dd5 DM |
4160 | relinfo, |
4161 | this, | |
4162 | prelocs, | |
4163 | reloc_count, | |
4164 | output_section, | |
4165 | needs_special_offset_handling, | |
4166 | view, | |
4167 | address, | |
364c7fa5 ILT |
4168 | view_size, |
4169 | reloc_symbol_changes); | |
f5314dd5 DM |
4170 | } |
4171 | ||
f5314dd5 DM |
4172 | // Scan the relocs during a relocatable link. |
4173 | ||
4174 | template<int size, bool big_endian> | |
4175 | void | |
4176 | Target_sparc<size, big_endian>::scan_relocatable_relocs( | |
f5314dd5 DM |
4177 | Symbol_table* symtab, |
4178 | Layout* layout, | |
6fa2a40b | 4179 | Sized_relobj_file<size, big_endian>* object, |
f5314dd5 DM |
4180 | unsigned int data_shndx, |
4181 | unsigned int sh_type, | |
4182 | const unsigned char* prelocs, | |
4183 | size_t reloc_count, | |
4184 | Output_section* output_section, | |
4185 | bool needs_special_offset_handling, | |
4186 | size_t local_symbol_count, | |
4187 | const unsigned char* plocal_symbols, | |
4188 | Relocatable_relocs* rr) | |
4189 | { | |
4d625b70 CC |
4190 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
4191 | Classify_reloc; | |
4192 | typedef gold::Default_scan_relocatable_relocs<Classify_reloc> | |
4193 | Scan_relocatable_relocs; | |
f5314dd5 | 4194 | |
4d625b70 | 4195 | gold_assert(sh_type == elfcpp::SHT_RELA); |
f5314dd5 | 4196 | |
4d625b70 | 4197 | gold::scan_relocatable_relocs<size, big_endian, Scan_relocatable_relocs>( |
f5314dd5 DM |
4198 | symtab, |
4199 | layout, | |
4200 | object, | |
4201 | data_shndx, | |
4202 | prelocs, | |
4203 | reloc_count, | |
4204 | output_section, | |
4205 | needs_special_offset_handling, | |
4206 | local_symbol_count, | |
4207 | plocal_symbols, | |
4208 | rr); | |
4209 | } | |
4210 | ||
4d625b70 CC |
4211 | // Scan the relocs for --emit-relocs. |
4212 | ||
4213 | template<int size, bool big_endian> | |
4214 | void | |
4215 | Target_sparc<size, big_endian>::emit_relocs_scan( | |
4216 | Symbol_table* symtab, | |
4217 | Layout* layout, | |
4218 | Sized_relobj_file<size, big_endian>* object, | |
4219 | unsigned int data_shndx, | |
4220 | unsigned int sh_type, | |
4221 | const unsigned char* prelocs, | |
4222 | size_t reloc_count, | |
4223 | Output_section* output_section, | |
4224 | bool needs_special_offset_handling, | |
4225 | size_t local_symbol_count, | |
4226 | const unsigned char* plocal_syms, | |
4227 | Relocatable_relocs* rr) | |
4228 | { | |
4229 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> | |
4230 | Classify_reloc; | |
4231 | typedef gold::Default_emit_relocs_strategy<Classify_reloc> | |
4232 | Emit_relocs_strategy; | |
4233 | ||
4234 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
4235 | ||
4236 | gold::scan_relocatable_relocs<size, big_endian, Emit_relocs_strategy>( | |
4237 | symtab, | |
4238 | layout, | |
4239 | object, | |
4240 | data_shndx, | |
4241 | prelocs, | |
4242 | reloc_count, | |
4243 | output_section, | |
4244 | needs_special_offset_handling, | |
4245 | local_symbol_count, | |
4246 | plocal_syms, | |
4247 | rr); | |
4248 | } | |
4249 | ||
7404fe1b | 4250 | // Emit relocations for a section. |
f5314dd5 DM |
4251 | |
4252 | template<int size, bool big_endian> | |
4253 | void | |
7404fe1b | 4254 | Target_sparc<size, big_endian>::relocate_relocs( |
f5314dd5 DM |
4255 | const Relocate_info<size, big_endian>* relinfo, |
4256 | unsigned int sh_type, | |
4257 | const unsigned char* prelocs, | |
4258 | size_t reloc_count, | |
4259 | Output_section* output_section, | |
62fe925a | 4260 | typename elfcpp::Elf_types<size>::Elf_Off offset_in_output_section, |
f5314dd5 DM |
4261 | unsigned char* view, |
4262 | typename elfcpp::Elf_types<size>::Elf_Addr view_address, | |
4263 | section_size_type view_size, | |
4264 | unsigned char* reloc_view, | |
4265 | section_size_type reloc_view_size) | |
4266 | { | |
4d625b70 CC |
4267 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
4268 | Classify_reloc; | |
4269 | ||
f5314dd5 DM |
4270 | gold_assert(sh_type == elfcpp::SHT_RELA); |
4271 | ||
4d625b70 | 4272 | gold::relocate_relocs<size, big_endian, Classify_reloc>( |
f5314dd5 DM |
4273 | relinfo, |
4274 | prelocs, | |
4275 | reloc_count, | |
4276 | output_section, | |
4277 | offset_in_output_section, | |
f5314dd5 DM |
4278 | view, |
4279 | view_address, | |
4280 | view_size, | |
4281 | reloc_view, | |
4282 | reloc_view_size); | |
4283 | } | |
4284 | ||
4285 | // Return the value to use for a dynamic which requires special | |
4286 | // treatment. This is how we support equality comparisons of function | |
4287 | // pointers across shared library boundaries, as described in the | |
4288 | // processor specific ABI supplement. | |
4289 | ||
4290 | template<int size, bool big_endian> | |
4291 | uint64_t | |
4292 | Target_sparc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const | |
4293 | { | |
4294 | gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset()); | |
4295 | return this->plt_section()->address() + gsym->plt_offset(); | |
4296 | } | |
4297 | ||
a4d85145 DM |
4298 | // do_make_elf_object to override the same function in the base class. |
4299 | // We need to use a target-specific sub-class of | |
4300 | // Sized_relobj_file<size, big_endian> to process SPARC specific bits | |
4301 | // of the ELF headers. Hence we need to have our own ELF object creation. | |
4302 | ||
4303 | template<int size, bool big_endian> | |
4304 | Object* | |
4305 | Target_sparc<size, big_endian>::do_make_elf_object( | |
4306 | const std::string& name, | |
4307 | Input_file* input_file, | |
4308 | off_t offset, const elfcpp::Ehdr<size, big_endian>& ehdr) | |
4309 | { | |
4310 | elfcpp::Elf_Half machine = ehdr.get_e_machine(); | |
4311 | elfcpp::Elf_Word flags = ehdr.get_e_flags(); | |
4312 | elfcpp::Elf_Word omm, mm; | |
2e702c99 | 4313 | |
a4d85145 DM |
4314 | switch (machine) |
4315 | { | |
4316 | case elfcpp::EM_SPARC32PLUS: | |
4317 | this->elf_machine_ = elfcpp::EM_SPARC32PLUS; | |
4318 | break; | |
4319 | ||
4320 | case elfcpp::EM_SPARC: | |
4321 | case elfcpp::EM_SPARCV9: | |
4322 | break; | |
4323 | ||
4324 | default: | |
4325 | break; | |
4326 | } | |
4327 | ||
4328 | if (!this->elf_flags_set_) | |
4329 | { | |
4330 | this->elf_flags_ = flags; | |
4331 | this->elf_flags_set_ = true; | |
4332 | } | |
4333 | else | |
4334 | { | |
4335 | // Accumulate cpu feature bits. | |
4336 | this->elf_flags_ |= (flags & (elfcpp::EF_SPARC_32PLUS | |
4337 | | elfcpp::EF_SPARC_SUN_US1 | |
4338 | | elfcpp::EF_SPARC_HAL_R1 | |
4339 | | elfcpp::EF_SPARC_SUN_US3)); | |
4340 | ||
4341 | // Bump the memory model setting to the most restrictive | |
4342 | // one we encounter. | |
4343 | omm = (this->elf_flags_ & elfcpp::EF_SPARCV9_MM); | |
4344 | mm = (flags & elfcpp::EF_SPARCV9_MM); | |
4345 | if (omm != mm) | |
4346 | { | |
4347 | if (mm == elfcpp::EF_SPARCV9_TSO) | |
4348 | { | |
4349 | this->elf_flags_ &= ~elfcpp::EF_SPARCV9_MM; | |
4350 | this->elf_flags_ |= elfcpp::EF_SPARCV9_TSO; | |
4351 | } | |
4352 | else if (mm == elfcpp::EF_SPARCV9_PSO | |
4353 | && omm == elfcpp::EF_SPARCV9_RMO) | |
4354 | { | |
4355 | this->elf_flags_ &= ~elfcpp::EF_SPARCV9_MM; | |
4356 | this->elf_flags_ |= elfcpp::EF_SPARCV9_PSO; | |
4357 | } | |
4358 | } | |
4359 | } | |
4360 | ||
4361 | // Validate that the little-endian flag matches how we've | |
4362 | // been instantiated. | |
4363 | if (!(flags & elfcpp::EF_SPARC_LEDATA) != big_endian) | |
4364 | { | |
4365 | if (big_endian) | |
4366 | gold_error(_("%s: little endian elf flag set on BE object"), | |
4367 | name.c_str()); | |
4368 | else | |
4369 | gold_error(_("%s: little endian elf flag clear on LE object"), | |
4370 | name.c_str()); | |
4371 | } | |
4372 | ||
4373 | return Target::do_make_elf_object(name, input_file, offset, ehdr); | |
4374 | } | |
4375 | ||
4376 | // Adjust ELF file header. | |
4377 | ||
4378 | template<int size, bool big_endian> | |
4379 | void | |
4380 | Target_sparc<size, big_endian>::do_adjust_elf_header( | |
4381 | unsigned char* view, | |
cc84c10b | 4382 | int len) |
a4d85145 DM |
4383 | { |
4384 | elfcpp::Ehdr_write<size, big_endian> oehdr(view); | |
4385 | ||
4386 | oehdr.put_e_machine(this->elf_machine_); | |
4387 | oehdr.put_e_flags(this->elf_flags_); | |
4388 | ||
4389 | Sized_target<size, big_endian>::do_adjust_elf_header(view, len); | |
4390 | } | |
4391 | ||
f5314dd5 DM |
4392 | // The selector for sparc object files. |
4393 | ||
4394 | template<int size, bool big_endian> | |
4395 | class Target_selector_sparc : public Target_selector | |
4396 | { | |
4397 | public: | |
4398 | Target_selector_sparc() | |
4399 | : Target_selector(elfcpp::EM_NONE, size, big_endian, | |
03ef7571 ILT |
4400 | (size == 64 ? "elf64-sparc" : "elf32-sparc"), |
4401 | (size == 64 ? "elf64_sparc" : "elf32_sparc")) | |
f5314dd5 DM |
4402 | { } |
4403 | ||
2e702c99 RM |
4404 | virtual Target* |
4405 | do_recognize(Input_file*, off_t, int machine, int, int) | |
f5314dd5 DM |
4406 | { |
4407 | switch (size) | |
4408 | { | |
4409 | case 64: | |
2ea97941 | 4410 | if (machine != elfcpp::EM_SPARCV9) |
f5314dd5 DM |
4411 | return NULL; |
4412 | break; | |
4413 | ||
4414 | case 32: | |
2ea97941 ILT |
4415 | if (machine != elfcpp::EM_SPARC |
4416 | && machine != elfcpp::EM_SPARC32PLUS) | |
f5314dd5 DM |
4417 | return NULL; |
4418 | break; | |
4419 | ||
4420 | default: | |
4421 | return NULL; | |
4422 | } | |
4423 | ||
7f055c20 | 4424 | return this->instantiate_target(); |
f5314dd5 DM |
4425 | } |
4426 | ||
2e702c99 RM |
4427 | virtual Target* |
4428 | do_instantiate_target() | |
7f055c20 | 4429 | { return new Target_sparc<size, big_endian>(); } |
f5314dd5 DM |
4430 | }; |
4431 | ||
4432 | Target_selector_sparc<32, true> target_selector_sparc32; | |
4433 | Target_selector_sparc<64, true> target_selector_sparc64; | |
4434 | ||
4435 | } // End anonymous namespace. |