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1 | // sparc.cc -- sparc target support for gold. |
2 | ||
3 | // Copyright 2008 Free Software Foundation, Inc. | |
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" | |
37 | #include "target.h" | |
38 | #include "target-reloc.h" | |
39 | #include "target-select.h" | |
40 | #include "tls.h" | |
41 | #include "errors.h" | |
42 | ||
43 | namespace | |
44 | { | |
45 | ||
46 | using namespace gold; | |
47 | ||
48 | template<int size, bool big_endian> | |
49 | class Output_data_plt_sparc; | |
50 | ||
51 | template<int size, bool big_endian> | |
52 | class Target_sparc : public Sized_target<size, big_endian> | |
53 | { | |
54 | public: | |
55 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section; | |
56 | ||
57 | Target_sparc() | |
58 | : Sized_target<size, big_endian>(&sparc_info), | |
59 | got_(NULL), plt_(NULL), rela_dyn_(NULL), | |
60 | copy_relocs_(NULL), dynbss_(NULL), got_mod_index_offset_(-1U), | |
61 | tls_get_addr_sym_(NULL) | |
62 | { | |
63 | } | |
64 | ||
65 | // Scan the relocations to look for symbol adjustments. | |
66 | void | |
67 | scan_relocs(const General_options& options, | |
68 | Symbol_table* symtab, | |
69 | Layout* layout, | |
70 | Sized_relobj<size, big_endian>* object, | |
71 | unsigned int data_shndx, | |
72 | unsigned int sh_type, | |
73 | const unsigned char* prelocs, | |
74 | size_t reloc_count, | |
75 | Output_section* output_section, | |
76 | bool needs_special_offset_handling, | |
77 | size_t local_symbol_count, | |
78 | const unsigned char* plocal_symbols); | |
79 | // Finalize the sections. | |
80 | void | |
81 | do_finalize_sections(Layout*); | |
82 | ||
83 | // Return the value to use for a dynamic which requires special | |
84 | // treatment. | |
85 | uint64_t | |
86 | do_dynsym_value(const Symbol*) const; | |
87 | ||
88 | // Relocate a section. | |
89 | void | |
90 | relocate_section(const Relocate_info<size, big_endian>*, | |
91 | unsigned int sh_type, | |
92 | const unsigned char* prelocs, | |
93 | size_t reloc_count, | |
94 | Output_section* output_section, | |
95 | bool needs_special_offset_handling, | |
96 | unsigned char* view, | |
97 | typename elfcpp::Elf_types<size>::Elf_Addr view_address, | |
98 | section_size_type view_size); | |
99 | ||
100 | // Scan the relocs during a relocatable link. | |
101 | void | |
102 | scan_relocatable_relocs(const General_options& options, | |
103 | Symbol_table* symtab, | |
104 | Layout* layout, | |
105 | Sized_relobj<size, big_endian>* object, | |
106 | unsigned int data_shndx, | |
107 | unsigned int sh_type, | |
108 | const unsigned char* prelocs, | |
109 | size_t reloc_count, | |
110 | Output_section* output_section, | |
111 | bool needs_special_offset_handling, | |
112 | size_t local_symbol_count, | |
113 | const unsigned char* plocal_symbols, | |
114 | Relocatable_relocs*); | |
115 | ||
116 | // Relocate a section during a relocatable link. | |
117 | void | |
118 | relocate_for_relocatable(const Relocate_info<size, big_endian>*, | |
119 | unsigned int sh_type, | |
120 | const unsigned char* prelocs, | |
121 | size_t reloc_count, | |
122 | Output_section* output_section, | |
123 | off_t offset_in_output_section, | |
124 | const Relocatable_relocs*, | |
125 | unsigned char* view, | |
126 | typename elfcpp::Elf_types<size>::Elf_Addr view_address, | |
127 | section_size_type view_size, | |
128 | unsigned char* reloc_view, | |
129 | section_size_type reloc_view_size); | |
130 | // Return whether SYM is defined by the ABI. | |
131 | bool | |
132 | do_is_defined_by_abi(Symbol* sym) const | |
133 | { | |
134 | // XXX Really need to support this better... | |
135 | if (sym->type() == elfcpp::STT_SPARC_REGISTER) | |
136 | return 1; | |
137 | ||
138 | return strcmp(sym->name(), "___tls_get_addr") == 0; | |
139 | } | |
140 | ||
141 | // Return the size of the GOT section. | |
142 | section_size_type | |
143 | got_size() | |
144 | { | |
145 | gold_assert(this->got_ != NULL); | |
146 | return this->got_->data_size(); | |
147 | } | |
148 | ||
149 | private: | |
150 | ||
151 | // The class which scans relocations. | |
152 | struct Scan | |
153 | { | |
154 | inline void | |
155 | local(const General_options& options, Symbol_table* symtab, | |
156 | Layout* layout, Target_sparc* target, | |
157 | Sized_relobj<size, big_endian>* object, | |
158 | unsigned int data_shndx, | |
159 | Output_section* output_section, | |
160 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
161 | const elfcpp::Sym<size, big_endian>& lsym); | |
162 | ||
163 | inline void | |
164 | global(const General_options& options, Symbol_table* symtab, | |
165 | Layout* layout, Target_sparc* target, | |
166 | Sized_relobj<size, big_endian>* object, | |
167 | unsigned int data_shndx, | |
168 | Output_section* output_section, | |
169 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
170 | Symbol* gsym); | |
171 | ||
172 | static void | |
173 | unsupported_reloc_local(Sized_relobj<size, big_endian>*, | |
174 | unsigned int r_type); | |
175 | ||
176 | static void | |
177 | unsupported_reloc_global(Sized_relobj<size, big_endian>*, | |
178 | unsigned int r_type, Symbol*); | |
179 | ||
180 | static void | |
181 | generate_tls_call(Symbol_table* symtab, Layout* layout, | |
182 | Target_sparc* target); | |
183 | }; | |
184 | ||
185 | // The class which implements relocation. | |
186 | class Relocate | |
187 | { | |
188 | public: | |
189 | Relocate() | |
190 | : ignore_gd_add_(false) | |
191 | { } | |
192 | ||
193 | ~Relocate() | |
194 | { | |
195 | if (this->ignore_gd_add_) | |
196 | { | |
197 | // FIXME: This needs to specify the location somehow. | |
198 | gold_error(_("missing expected TLS relocation")); | |
199 | } | |
200 | } | |
201 | ||
202 | // Do a relocation. Return false if the caller should not issue | |
203 | // any warnings about this relocation. | |
204 | inline bool | |
205 | relocate(const Relocate_info<size, big_endian>*, Target_sparc*, | |
206 | size_t relnum, const elfcpp::Rela<size, big_endian>&, | |
207 | unsigned int r_type, const Sized_symbol<size>*, | |
208 | const Symbol_value<size>*, | |
209 | unsigned char*, | |
210 | typename elfcpp::Elf_types<size>::Elf_Addr, | |
211 | section_size_type); | |
212 | ||
213 | private: | |
214 | // Do a TLS relocation. | |
215 | inline void | |
216 | relocate_tls(const Relocate_info<size, big_endian>*, Target_sparc* target, | |
217 | size_t relnum, const elfcpp::Rela<size, big_endian>&, | |
218 | unsigned int r_type, const Sized_symbol<size>*, | |
219 | const Symbol_value<size>*, | |
220 | unsigned char*, | |
221 | typename elfcpp::Elf_types<size>::Elf_Addr, | |
222 | section_size_type); | |
223 | ||
224 | // Ignore the next relocation which should be R_SPARC_TLS_GD_ADD | |
225 | bool ignore_gd_add_; | |
226 | }; | |
227 | ||
228 | // A class which returns the size required for a relocation type, | |
229 | // used while scanning relocs during a relocatable link. | |
230 | class Relocatable_size_for_reloc | |
231 | { | |
232 | public: | |
233 | unsigned int | |
234 | get_size_for_reloc(unsigned int, Relobj*); | |
235 | }; | |
236 | ||
237 | // Get the GOT section, creating it if necessary. | |
238 | Output_data_got<size, big_endian>* | |
239 | got_section(Symbol_table*, Layout*); | |
240 | ||
241 | // Create a PLT entry for a global symbol. | |
242 | void | |
243 | make_plt_entry(Symbol_table*, Layout*, Symbol*); | |
244 | ||
245 | // Create a GOT entry for the TLS module index. | |
246 | unsigned int | |
247 | got_mod_index_entry(Symbol_table* symtab, Layout* layout, | |
248 | Sized_relobj<size, big_endian>* object); | |
249 | ||
250 | // Return the gsym for "__tls_get_addr". Cache if not already | |
251 | // cached. | |
252 | Symbol* | |
253 | tls_get_addr_sym(Symbol_table* symtab) | |
254 | { | |
255 | if (!this->tls_get_addr_sym_) | |
256 | this->tls_get_addr_sym_ = symtab->lookup("__tls_get_addr", NULL); | |
257 | gold_assert(this->tls_get_addr_sym_); | |
258 | return this->tls_get_addr_sym_; | |
259 | } | |
260 | ||
261 | // Get the PLT section. | |
262 | const Output_data_plt_sparc<size, big_endian>* | |
263 | plt_section() const | |
264 | { | |
265 | gold_assert(this->plt_ != NULL); | |
266 | return this->plt_; | |
267 | } | |
268 | ||
269 | // Get the dynamic reloc section, creating it if necessary. | |
270 | Reloc_section* | |
271 | rela_dyn_section(Layout*); | |
272 | ||
273 | // Return true if the symbol may need a COPY relocation. | |
274 | // References from an executable object to non-function symbols | |
275 | // defined in a dynamic object may need a COPY relocation. | |
276 | bool | |
277 | may_need_copy_reloc(Symbol* gsym) | |
278 | { | |
279 | return (!parameters->options().shared() | |
280 | && gsym->is_from_dynobj() | |
281 | && gsym->type() != elfcpp::STT_FUNC); | |
282 | } | |
283 | ||
284 | // Copy a relocation against a global symbol. | |
285 | void | |
286 | copy_reloc(const General_options*, Symbol_table*, Layout*, | |
287 | Sized_relobj<size, big_endian>*, unsigned int, | |
288 | Output_section*, Symbol*, const elfcpp::Rela<size, big_endian>&); | |
289 | ||
290 | // Information about this specific target which we pass to the | |
291 | // general Target structure. | |
292 | static Target::Target_info sparc_info; | |
293 | ||
294 | // The types of GOT entries needed for this platform. | |
295 | enum Got_type | |
296 | { | |
297 | GOT_TYPE_STANDARD = 0, // GOT entry for a regular symbol | |
298 | GOT_TYPE_TLS_OFFSET = 1, // GOT entry for TLS offset | |
299 | GOT_TYPE_TLS_PAIR = 2, // GOT entry for TLS module/offset pair | |
300 | }; | |
301 | ||
302 | // The GOT section. | |
303 | Output_data_got<size, big_endian>* got_; | |
304 | // The PLT section. | |
305 | Output_data_plt_sparc<size, big_endian>* plt_; | |
306 | // The dynamic reloc section. | |
307 | Reloc_section* rela_dyn_; | |
308 | // Relocs saved to avoid a COPY reloc. | |
309 | Copy_relocs<size, big_endian>* copy_relocs_; | |
310 | // Space for variables copied with a COPY reloc. | |
311 | Output_data_space* dynbss_; | |
312 | // Offset of the GOT entry for the TLS module index; | |
313 | unsigned int got_mod_index_offset_; | |
314 | // Cached pointer to __tls_get_addr symbol | |
315 | Symbol* tls_get_addr_sym_; | |
316 | }; | |
317 | ||
318 | template<> | |
319 | Target::Target_info Target_sparc<32, true>::sparc_info = | |
320 | { | |
321 | 32, // size | |
322 | true, // is_big_endian | |
323 | elfcpp::EM_SPARC, // machine_code | |
324 | false, // has_make_symbol | |
325 | false, // has_resolve | |
326 | false, // has_code_fill | |
327 | true, // is_default_stack_executable | |
328 | '\0', // wrap_char | |
329 | "/usr/lib/ld.so.1", // dynamic_linker | |
330 | 0x00010000, // default_text_segment_address | |
331 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
332 | 8 * 1024 // common_pagesize (overridable by -z common-page-size) | |
333 | }; | |
334 | ||
335 | template<> | |
336 | Target::Target_info Target_sparc<64, true>::sparc_info = | |
337 | { | |
338 | 64, // size | |
339 | true, // is_big_endian | |
340 | elfcpp::EM_SPARCV9, // machine_code | |
341 | false, // has_make_symbol | |
342 | false, // has_resolve | |
343 | false, // has_code_fill | |
344 | true, // is_default_stack_executable | |
345 | '\0', // wrap_char | |
346 | "/usr/lib/sparcv9/ld.so.1", // dynamic_linker | |
347 | 0x100000, // default_text_segment_address | |
348 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
349 | 8 * 1024 // common_pagesize (overridable by -z common-page-size) | |
350 | }; | |
351 | ||
352 | // We have to take care here, even when operating in little-endian | |
353 | // mode, sparc instructions are still big endian. | |
354 | template<int size, bool big_endian> | |
355 | class Sparc_relocate_functions | |
356 | { | |
357 | private: | |
358 | // Do a simple relocation with the addend in the relocation. | |
359 | template<int valsize> | |
360 | static inline void | |
361 | rela(unsigned char* view, | |
362 | unsigned int right_shift, | |
363 | typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask, | |
364 | typename elfcpp::Swap<size, big_endian>::Valtype value, | |
365 | typename elfcpp::Swap<size, big_endian>::Valtype addend) | |
366 | { | |
367 | typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype; | |
368 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
369 | Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv); | |
370 | Valtype reloc = ((value + addend) >> right_shift); | |
371 | ||
372 | val &= ~dst_mask; | |
373 | reloc &= dst_mask; | |
374 | ||
375 | elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc); | |
376 | } | |
377 | ||
378 | // Do a simple relocation using a symbol value with the addend in | |
379 | // the relocation. | |
380 | template<int valsize> | |
381 | static inline void | |
382 | rela(unsigned char* view, | |
383 | unsigned int right_shift, | |
384 | typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask, | |
385 | const Sized_relobj<size, big_endian>* object, | |
386 | const Symbol_value<size>* psymval, | |
387 | typename elfcpp::Swap<valsize, big_endian>::Valtype addend) | |
388 | { | |
389 | typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype; | |
390 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
391 | Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv); | |
392 | Valtype reloc = (psymval->value(object, addend) >> right_shift); | |
393 | ||
394 | val &= ~dst_mask; | |
395 | reloc &= dst_mask; | |
396 | ||
397 | elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc); | |
398 | } | |
399 | ||
400 | // Do a simple relocation using a symbol value with the addend in | |
401 | // the relocation, unaligned. | |
402 | template<int valsize> | |
403 | static inline void | |
404 | rela_ua(unsigned char* view, | |
405 | unsigned int right_shift, elfcpp::Elf_Xword dst_mask, | |
406 | const Sized_relobj<size, big_endian>* object, | |
407 | const Symbol_value<size>* psymval, | |
408 | typename elfcpp::Swap<size, big_endian>::Valtype addend) | |
409 | { | |
410 | typedef typename elfcpp::Swap_unaligned<valsize, | |
411 | big_endian>::Valtype Valtype; | |
412 | unsigned char* wv = view; | |
413 | Valtype val = elfcpp::Swap_unaligned<valsize, big_endian>::readval(wv); | |
414 | Valtype reloc = (psymval->value(object, addend) >> right_shift); | |
415 | ||
416 | val &= ~dst_mask; | |
417 | reloc &= dst_mask; | |
418 | ||
419 | elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, val | reloc); | |
420 | } | |
421 | ||
422 | // Do a simple PC relative relocation with a Symbol_value with the | |
423 | // addend in the relocation. | |
424 | template<int valsize> | |
425 | static inline void | |
426 | pcrela(unsigned char* view, | |
427 | unsigned int right_shift, | |
428 | typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask, | |
429 | const Sized_relobj<size, big_endian>* object, | |
430 | const Symbol_value<size>* psymval, | |
431 | typename elfcpp::Swap<size, big_endian>::Valtype addend, | |
432 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
433 | { | |
434 | typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype; | |
435 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
436 | Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv); | |
437 | Valtype reloc = ((psymval->value(object, addend) - address) | |
438 | >> right_shift); | |
439 | ||
440 | val &= ~dst_mask; | |
441 | reloc &= dst_mask; | |
442 | ||
443 | elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc); | |
444 | } | |
445 | ||
446 | template<int valsize> | |
447 | static inline void | |
448 | pcrela_unaligned(unsigned char* view, | |
449 | const Sized_relobj<size, big_endian>* object, | |
450 | const Symbol_value<size>* psymval, | |
451 | typename elfcpp::Swap<size, big_endian>::Valtype addend, | |
452 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
453 | { | |
454 | typedef typename elfcpp::Swap_unaligned<valsize, | |
455 | big_endian>::Valtype Valtype; | |
456 | unsigned char* wv = view; | |
457 | Valtype reloc = (psymval->value(object, addend) - address); | |
458 | ||
459 | elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, reloc); | |
460 | } | |
461 | ||
462 | typedef Sparc_relocate_functions<size, big_endian> This; | |
463 | typedef Sparc_relocate_functions<size, true> This_insn; | |
464 | ||
465 | public: | |
466 | // R_SPARC_WDISP30: (Symbol + Addend - Address) >> 2 | |
467 | static inline void | |
468 | wdisp30(unsigned char* view, | |
469 | const Sized_relobj<size, big_endian>* object, | |
470 | const Symbol_value<size>* psymval, | |
471 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
472 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
473 | { | |
474 | This_insn::template pcrela<32>(view, 2, 0x3fffffff, object, | |
475 | psymval, addend, address); | |
476 | } | |
477 | ||
478 | // R_SPARC_WDISP22: (Symbol + Addend - Address) >> 2 | |
479 | static inline void | |
480 | wdisp22(unsigned char* view, | |
481 | const Sized_relobj<size, big_endian>* object, | |
482 | const Symbol_value<size>* psymval, | |
483 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
484 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
485 | { | |
486 | This_insn::template pcrela<32>(view, 2, 0x003fffff, object, | |
487 | psymval, addend, address); | |
488 | } | |
489 | ||
490 | // R_SPARC_WDISP19: (Symbol + Addend - Address) >> 2 | |
491 | static inline void | |
492 | wdisp19(unsigned char* view, | |
493 | const Sized_relobj<size, big_endian>* object, | |
494 | const Symbol_value<size>* psymval, | |
495 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
496 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
497 | { | |
498 | This_insn::template pcrela<32>(view, 2, 0x0007ffff, object, | |
499 | psymval, addend, address); | |
500 | } | |
501 | ||
502 | // R_SPARC_WDISP16: (Symbol + Addend - Address) >> 2 | |
503 | static inline void | |
504 | wdisp16(unsigned char* view, | |
505 | const Sized_relobj<size, big_endian>* object, | |
506 | const Symbol_value<size>* psymval, | |
507 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
508 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
509 | { | |
510 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
511 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
512 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
513 | Valtype reloc = ((psymval->value(object, addend) - address) | |
514 | >> 2); | |
515 | ||
516 | // The relocation value is split between the low 14 bits, | |
517 | // and bits 20-21. | |
518 | val &= ~((0x3 << 20) | 0x3fff); | |
519 | reloc = (((reloc & 0xc000) << (20 - 14)) | |
520 | | (reloc & 0x3ffff)); | |
521 | ||
522 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
523 | } | |
524 | ||
525 | // R_SPARC_PC22: (Symbol + Addend - Address) >> 10 | |
526 | static inline void | |
527 | pc22(unsigned char* view, | |
528 | const Sized_relobj<size, big_endian>* object, | |
529 | const Symbol_value<size>* psymval, | |
530 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
531 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
532 | { | |
533 | This_insn::template pcrela<32>(view, 10, 0x003fffff, object, | |
534 | psymval, addend, address); | |
535 | } | |
536 | ||
537 | // R_SPARC_PC10: (Symbol + Addend - Address) & 0x3ff | |
538 | static inline void | |
539 | pc10(unsigned char* view, | |
540 | const Sized_relobj<size, big_endian>* object, | |
541 | const Symbol_value<size>* psymval, | |
542 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
543 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
544 | { | |
545 | This_insn::template pcrela<32>(view, 0, 0x000003ff, object, | |
546 | psymval, addend, address); | |
547 | } | |
548 | ||
549 | // R_SPARC_HI22: (Symbol + Addend) >> 10 | |
550 | static inline void | |
551 | hi22(unsigned char* view, | |
552 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
553 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
554 | { | |
555 | This_insn::template rela<32>(view, 10, 0x003fffff, value, addend); | |
556 | } | |
557 | ||
558 | // R_SPARC_HI22: (Symbol + Addend) >> 10 | |
559 | static inline void | |
560 | hi22(unsigned char* view, | |
561 | const Sized_relobj<size, big_endian>* object, | |
562 | const Symbol_value<size>* psymval, | |
563 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
564 | { | |
565 | This_insn::template rela<32>(view, 10, 0x003fffff, object, psymval, addend); | |
566 | } | |
567 | ||
568 | // R_SPARC_PCPLT22: (Symbol + Addend - Address) >> 10 | |
569 | static inline void | |
570 | pcplt22(unsigned char* view, | |
571 | const Sized_relobj<size, big_endian>* object, | |
572 | const Symbol_value<size>* psymval, | |
573 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
574 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
575 | { | |
576 | This_insn::template pcrela<32>(view, 10, 0x003fffff, object, | |
577 | psymval, addend, address); | |
578 | } | |
579 | ||
580 | // R_SPARC_LO10: (Symbol + Addend) & 0x3ff | |
581 | static inline void | |
582 | lo10(unsigned char* view, | |
583 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
584 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
585 | { | |
586 | This_insn::template rela<32>(view, 0, 0x000003ff, value, addend); | |
587 | } | |
588 | ||
589 | // R_SPARC_LO10: (Symbol + Addend) & 0x3ff | |
590 | static inline void | |
591 | lo10(unsigned char* view, | |
592 | const Sized_relobj<size, big_endian>* object, | |
593 | const Symbol_value<size>* psymval, | |
594 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
595 | { | |
596 | This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend); | |
597 | } | |
598 | ||
599 | // R_SPARC_LO10: (Symbol + Addend) & 0x3ff | |
600 | static inline void | |
601 | lo10(unsigned char* view, | |
602 | const Sized_relobj<size, big_endian>* object, | |
603 | const Symbol_value<size>* psymval, | |
604 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
605 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
606 | { | |
607 | This_insn::template pcrela<32>(view, 0, 0x000003ff, object, | |
608 | psymval, addend, address); | |
609 | } | |
610 | ||
611 | // R_SPARC_OLO10: ((Symbol + Addend) & 0x3ff) + Addend2 | |
612 | static inline void | |
613 | olo10(unsigned char* view, | |
614 | const Sized_relobj<size, big_endian>* object, | |
615 | const Symbol_value<size>* psymval, | |
616 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
617 | typename elfcpp::Elf_types<size>::Elf_Addr addend2) | |
618 | { | |
619 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
620 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
621 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
622 | Valtype reloc = psymval->value(object, addend); | |
623 | ||
624 | val &= ~0x1fff; | |
625 | reloc &= 0x3ff; | |
626 | reloc += addend2; | |
627 | reloc &= 0x1fff; | |
628 | ||
629 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
630 | } | |
631 | ||
632 | // R_SPARC_22: (Symbol + Addend) | |
633 | static inline void | |
634 | rela32_22(unsigned char* view, | |
635 | const Sized_relobj<size, big_endian>* object, | |
636 | const Symbol_value<size>* psymval, | |
637 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
638 | { | |
639 | This_insn::template rela<32>(view, 0, 0x003fffff, object, psymval, addend); | |
640 | } | |
641 | ||
642 | // R_SPARC_13: (Symbol + Addend) | |
643 | static inline void | |
644 | rela32_13(unsigned char* view, | |
645 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
646 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
647 | { | |
648 | This_insn::template rela<32>(view, 0, 0x00001fff, value, addend); | |
649 | } | |
650 | ||
651 | // R_SPARC_13: (Symbol + Addend) | |
652 | static inline void | |
653 | rela32_13(unsigned char* view, | |
654 | const Sized_relobj<size, big_endian>* object, | |
655 | const Symbol_value<size>* psymval, | |
656 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
657 | { | |
658 | This_insn::template rela<32>(view, 0, 0x00001fff, object, psymval, addend); | |
659 | } | |
660 | ||
661 | // R_SPARC_UA16: (Symbol + Addend) | |
662 | static inline void | |
663 | ua16(unsigned char* view, | |
664 | const Sized_relobj<size, big_endian>* object, | |
665 | const Symbol_value<size>* psymval, | |
666 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
667 | { | |
668 | This::template rela_ua<16>(view, 0, 0xffff, object, psymval, addend); | |
669 | } | |
670 | ||
671 | // R_SPARC_UA32: (Symbol + Addend) | |
672 | static inline void | |
673 | ua32(unsigned char* view, | |
674 | const Sized_relobj<size, big_endian>* object, | |
675 | const Symbol_value<size>* psymval, | |
676 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
677 | { | |
678 | This::template rela_ua<32>(view, 0, 0xffffffff, object, psymval, addend); | |
679 | } | |
680 | ||
681 | // R_SPARC_UA64: (Symbol + Addend) | |
682 | static inline void | |
683 | ua64(unsigned char* view, | |
684 | const Sized_relobj<size, big_endian>* object, | |
685 | const Symbol_value<size>* psymval, | |
686 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
687 | { | |
688 | This::template rela_ua<64>(view, 0, ~(elfcpp::Elf_Xword) 0, | |
689 | object, psymval, addend); | |
690 | } | |
691 | ||
692 | // R_SPARC_DISP8: (Symbol + Addend - Address) | |
693 | static inline void | |
694 | disp8(unsigned char* view, | |
695 | const Sized_relobj<size, big_endian>* object, | |
696 | const Symbol_value<size>* psymval, | |
697 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
698 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
699 | { | |
700 | This::template pcrela_unaligned<8>(view, object, psymval, | |
701 | addend, address); | |
702 | } | |
703 | ||
704 | // R_SPARC_DISP16: (Symbol + Addend - Address) | |
705 | static inline void | |
706 | disp16(unsigned char* view, | |
707 | const Sized_relobj<size, big_endian>* object, | |
708 | const Symbol_value<size>* psymval, | |
709 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
710 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
711 | { | |
712 | This::template pcrela_unaligned<16>(view, object, psymval, | |
713 | addend, address); | |
714 | } | |
715 | ||
716 | // R_SPARC_DISP32: (Symbol + Addend - Address) | |
717 | static inline void | |
718 | disp32(unsigned char* view, | |
719 | const Sized_relobj<size, big_endian>* object, | |
720 | const Symbol_value<size>* psymval, | |
721 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
722 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
723 | { | |
724 | This::template pcrela_unaligned<32>(view, object, psymval, | |
725 | addend, address); | |
726 | } | |
727 | ||
728 | // R_SPARC_DISP64: (Symbol + Addend - Address) | |
729 | static inline void | |
730 | disp64(unsigned char* view, | |
731 | const Sized_relobj<size, big_endian>* object, | |
732 | const Symbol_value<size>* psymval, | |
733 | elfcpp::Elf_Xword addend, | |
734 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
735 | { | |
736 | This::template pcrela_unaligned<64>(view, object, psymval, | |
737 | addend, address); | |
738 | } | |
739 | ||
740 | // R_SPARC_H44: (Symbol + Addend) >> 22 | |
741 | static inline void | |
742 | h44(unsigned char* view, | |
743 | const Sized_relobj<size, big_endian>* object, | |
744 | const Symbol_value<size>* psymval, | |
745 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
746 | { | |
747 | This_insn::template rela<32>(view, 22, 0x003fffff, object, psymval, addend); | |
748 | } | |
749 | ||
750 | // R_SPARC_M44: ((Symbol + Addend) >> 12) & 0x3ff | |
751 | static inline void | |
752 | m44(unsigned char* view, | |
753 | const Sized_relobj<size, big_endian>* object, | |
754 | const Symbol_value<size>* psymval, | |
755 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
756 | { | |
757 | This_insn::template rela<32>(view, 12, 0x000003ff, object, psymval, addend); | |
758 | } | |
759 | ||
760 | // R_SPARC_L44: (Symbol + Addend) & 0xfff | |
761 | static inline void | |
762 | l44(unsigned char* view, | |
763 | const Sized_relobj<size, big_endian>* object, | |
764 | const Symbol_value<size>* psymval, | |
765 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
766 | { | |
767 | This_insn::template rela<32>(view, 0, 0x00000fff, object, psymval, addend); | |
768 | } | |
769 | ||
770 | // R_SPARC_HH22: (Symbol + Addend) >> 42 | |
771 | static inline void | |
772 | hh22(unsigned char* view, | |
773 | const Sized_relobj<size, big_endian>* object, | |
774 | const Symbol_value<size>* psymval, | |
775 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
776 | { | |
777 | This_insn::template rela<32>(view, 42, 0x003fffff, object, psymval, addend); | |
778 | } | |
779 | ||
780 | // R_SPARC_PC_HH22: (Symbol + Addend - Address) >> 42 | |
781 | static inline void | |
782 | pc_hh22(unsigned char* view, | |
783 | const Sized_relobj<size, big_endian>* object, | |
784 | const Symbol_value<size>* psymval, | |
785 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
786 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
787 | { | |
788 | This_insn::template pcrela<32>(view, 42, 0x003fffff, object, | |
789 | psymval, addend, address); | |
790 | } | |
791 | ||
792 | // R_SPARC_HM10: ((Symbol + Addend) >> 32) & 0x3ff | |
793 | static inline void | |
794 | hm10(unsigned char* view, | |
795 | const Sized_relobj<size, big_endian>* object, | |
796 | const Symbol_value<size>* psymval, | |
797 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
798 | { | |
799 | This_insn::template rela<32>(view, 32, 0x000003ff, object, psymval, addend); | |
800 | } | |
801 | ||
802 | // R_SPARC_PC_HM10: ((Symbol + Addend - Address) >> 32) & 0x3ff | |
803 | static inline void | |
804 | pc_hm10(unsigned char* view, | |
805 | const Sized_relobj<size, big_endian>* object, | |
806 | const Symbol_value<size>* psymval, | |
807 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
808 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
809 | { | |
810 | This_insn::template pcrela<32>(view, 32, 0x000003ff, object, | |
811 | psymval, addend, address); | |
812 | } | |
813 | ||
814 | // R_SPARC_11: (Symbol + Addend) | |
815 | static inline void | |
816 | rela32_11(unsigned char* view, | |
817 | const Sized_relobj<size, big_endian>* object, | |
818 | const Symbol_value<size>* psymval, | |
819 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
820 | { | |
821 | This_insn::template rela<32>(view, 0, 0x000007ff, object, psymval, addend); | |
822 | } | |
823 | ||
824 | // R_SPARC_10: (Symbol + Addend) | |
825 | static inline void | |
826 | rela32_10(unsigned char* view, | |
827 | const Sized_relobj<size, big_endian>* object, | |
828 | const Symbol_value<size>* psymval, | |
829 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
830 | { | |
831 | This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend); | |
832 | } | |
833 | ||
834 | // R_SPARC_7: (Symbol + Addend) | |
835 | static inline void | |
836 | rela32_7(unsigned char* view, | |
837 | const Sized_relobj<size, big_endian>* object, | |
838 | const Symbol_value<size>* psymval, | |
839 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
840 | { | |
841 | This_insn::template rela<32>(view, 0, 0x0000007f, object, psymval, addend); | |
842 | } | |
843 | ||
844 | // R_SPARC_6: (Symbol + Addend) | |
845 | static inline void | |
846 | rela32_6(unsigned char* view, | |
847 | const Sized_relobj<size, big_endian>* object, | |
848 | const Symbol_value<size>* psymval, | |
849 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
850 | { | |
851 | This_insn::template rela<32>(view, 0, 0x0000003f, object, psymval, addend); | |
852 | } | |
853 | ||
854 | // R_SPARC_5: (Symbol + Addend) | |
855 | static inline void | |
856 | rela32_5(unsigned char* view, | |
857 | const Sized_relobj<size, big_endian>* object, | |
858 | const Symbol_value<size>* psymval, | |
859 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
860 | { | |
861 | This_insn::template rela<32>(view, 0, 0x0000001f, object, psymval, addend); | |
862 | } | |
863 | ||
864 | // R_SPARC_TLS_LDO_HIX22: @dtpoff(Symbol + Addend) >> 10 | |
865 | static inline void | |
866 | ldo_hix22(unsigned char* view, | |
867 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
868 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
869 | { | |
870 | This_insn::hi22(view, value, addend); | |
871 | } | |
872 | ||
873 | // R_SPARC_TLS_LDO_LOX10: @dtpoff(Symbol + Addend) & 0x3ff | |
874 | static inline void | |
875 | ldo_lox10(unsigned char* view, | |
876 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
877 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
878 | { | |
879 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
880 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
881 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
882 | Valtype reloc = (value + addend); | |
883 | ||
884 | val &= ~0x1fff; | |
885 | reloc &= 0x3ff; | |
886 | ||
887 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
888 | } | |
889 | ||
890 | // R_SPARC_TLS_LE_HIX22: (@tpoff(Symbol + Addend) ^ 0xffffffffffffffff) >> 10 | |
891 | static inline void | |
892 | hix22(unsigned char* view, | |
893 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
894 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
895 | { | |
896 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
897 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
898 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
899 | Valtype reloc = (value + addend); | |
900 | ||
901 | val &= ~0x3fffff; | |
902 | ||
903 | reloc ^= ~(Valtype)0; | |
904 | reloc >>= 10; | |
905 | ||
906 | reloc &= 0x3fffff; | |
907 | ||
908 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
909 | } | |
910 | ||
911 | // R_SPARC_HIX22: ((Symbol + Addend) ^ 0xffffffffffffffff) >> 10 | |
912 | static inline void | |
913 | hix22(unsigned char* view, | |
914 | const Sized_relobj<size, big_endian>* object, | |
915 | const Symbol_value<size>* psymval, | |
916 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
917 | { | |
918 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
919 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
920 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
921 | Valtype reloc = psymval->value(object, addend); | |
922 | ||
923 | val &= ~0x3fffff; | |
924 | ||
925 | reloc ^= ~(Valtype)0; | |
926 | reloc >>= 10; | |
927 | ||
928 | reloc &= 0x3fffff; | |
929 | ||
930 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
931 | } | |
932 | ||
933 | ||
934 | // R_SPARC_TLS_LE_LOX10: (@tpoff(Symbol + Addend) & 0x3ff) | 0x1c00 | |
935 | static inline void | |
936 | lox10(unsigned char* view, | |
937 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
938 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
939 | { | |
940 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
941 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
942 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
943 | Valtype reloc = (value + addend); | |
944 | ||
945 | val &= ~0x1fff; | |
946 | reloc &= 0x3ff; | |
947 | reloc |= 0x1c00; | |
948 | ||
949 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
950 | } | |
951 | ||
952 | // R_SPARC_LOX10: ((Symbol + Addend) & 0x3ff) | 0x1c00 | |
953 | static inline void | |
954 | lox10(unsigned char* view, | |
955 | const Sized_relobj<size, big_endian>* object, | |
956 | const Symbol_value<size>* psymval, | |
957 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
958 | { | |
959 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
960 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
961 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
962 | Valtype reloc = psymval->value(object, addend); | |
963 | ||
964 | val &= ~0x1fff; | |
965 | reloc &= 0x3ff; | |
966 | reloc |= 0x1c00; | |
967 | ||
968 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
969 | } | |
970 | }; | |
971 | ||
972 | // Get the GOT section, creating it if necessary. | |
973 | ||
974 | template<int size, bool big_endian> | |
975 | Output_data_got<size, big_endian>* | |
976 | Target_sparc<size, big_endian>::got_section(Symbol_table* symtab, | |
977 | Layout* layout) | |
978 | { | |
979 | if (this->got_ == NULL) | |
980 | { | |
981 | gold_assert(symtab != NULL && layout != NULL); | |
982 | ||
983 | this->got_ = new Output_data_got<size, big_endian>(); | |
984 | ||
985 | layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS, | |
986 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
987 | this->got_); | |
988 | ||
989 | // Define _GLOBAL_OFFSET_TABLE_ at the start of the .got section. | |
990 | symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
991 | this->got_, | |
992 | 0, 0, elfcpp::STT_OBJECT, | |
993 | elfcpp::STB_LOCAL, | |
994 | elfcpp::STV_HIDDEN, 0, | |
995 | false, false); | |
996 | } | |
997 | ||
998 | return this->got_; | |
999 | } | |
1000 | ||
1001 | // Get the dynamic reloc section, creating it if necessary. | |
1002 | ||
1003 | template<int size, bool big_endian> | |
1004 | typename Target_sparc<size, big_endian>::Reloc_section* | |
1005 | Target_sparc<size, big_endian>::rela_dyn_section(Layout* layout) | |
1006 | { | |
1007 | if (this->rela_dyn_ == NULL) | |
1008 | { | |
1009 | gold_assert(layout != NULL); | |
1010 | this->rela_dyn_ = new Reloc_section(); | |
1011 | layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA, | |
1012 | elfcpp::SHF_ALLOC, this->rela_dyn_); | |
1013 | } | |
1014 | return this->rela_dyn_; | |
1015 | } | |
1016 | ||
1017 | // A class to handle the PLT data. | |
1018 | ||
1019 | template<int size, bool big_endian> | |
1020 | class Output_data_plt_sparc : public Output_section_data | |
1021 | { | |
1022 | public: | |
1023 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
1024 | size, big_endian> Reloc_section; | |
1025 | ||
1026 | Output_data_plt_sparc(Layout*); | |
1027 | ||
1028 | // Add an entry to the PLT. | |
1029 | void add_entry(Symbol* gsym); | |
1030 | ||
1031 | // Return the .rela.plt section data. | |
1032 | const Reloc_section* rel_plt() const | |
1033 | { | |
1034 | return this->rel_; | |
1035 | } | |
1036 | ||
1037 | protected: | |
1038 | void do_adjust_output_section(Output_section* os); | |
1039 | ||
1040 | private: | |
1041 | // The size of an entry in the PLT. | |
1042 | static const int base_plt_entry_size = (size == 32 ? 12 : 32); | |
1043 | ||
1044 | static const unsigned int plt_entries_per_block = 160; | |
1045 | static const unsigned int plt_insn_chunk_size = 24; | |
1046 | static const unsigned int plt_pointer_chunk_size = 8; | |
1047 | static const unsigned int plt_block_size = | |
1048 | (plt_entries_per_block | |
1049 | * (plt_insn_chunk_size + plt_pointer_chunk_size)); | |
1050 | ||
1051 | // Set the final size. | |
1052 | void | |
1053 | set_final_data_size() | |
1054 | { | |
1055 | unsigned int full_count = this->count_ + 4; | |
1056 | unsigned int extra = (size == 32 ? 4 : 0); | |
1057 | ||
1058 | if (size == 32 || full_count < 32768) | |
1059 | this->set_data_size((full_count * base_plt_entry_size) + extra); | |
1060 | else | |
1061 | { | |
1062 | unsigned int ext_cnt = full_count - 32768; | |
1063 | ||
1064 | this->set_data_size((32768 * base_plt_entry_size) | |
1065 | + (ext_cnt | |
1066 | * (plt_insn_chunk_size | |
1067 | + plt_pointer_chunk_size))); | |
1068 | } | |
1069 | } | |
1070 | ||
1071 | // Write out the PLT data. | |
1072 | void | |
1073 | do_write(Output_file*); | |
1074 | ||
1075 | // The reloc section. | |
1076 | Reloc_section* rel_; | |
1077 | // The number of PLT entries. | |
1078 | unsigned int count_; | |
1079 | }; | |
1080 | ||
4f2a9edd ILT |
1081 | // Define the constants as required by C++ standard. |
1082 | ||
1083 | template<int size, bool big_endian> | |
1084 | const int Output_data_plt_sparc<size, big_endian>::base_plt_entry_size; | |
1085 | ||
1086 | template<int size, bool big_endian> | |
1087 | const unsigned int | |
1088 | Output_data_plt_sparc<size, big_endian>::plt_entries_per_block; | |
1089 | ||
1090 | template<int size, bool big_endian> | |
1091 | const unsigned int Output_data_plt_sparc<size, big_endian>::plt_insn_chunk_size; | |
1092 | ||
1093 | template<int size, bool big_endian> | |
1094 | const unsigned int | |
1095 | Output_data_plt_sparc<size, big_endian>::plt_pointer_chunk_size; | |
1096 | ||
1097 | template<int size, bool big_endian> | |
1098 | const unsigned int Output_data_plt_sparc<size, big_endian>::plt_block_size; | |
1099 | ||
f5314dd5 DM |
1100 | // Create the PLT section. The ordinary .got section is an argument, |
1101 | // since we need to refer to the start. | |
1102 | ||
1103 | template<int size, bool big_endian> | |
1104 | Output_data_plt_sparc<size, big_endian>::Output_data_plt_sparc(Layout* layout) | |
1105 | : Output_section_data(size == 32 ? 4 : 8), count_(0) | |
1106 | { | |
1107 | this->rel_ = new Reloc_section(); | |
1108 | layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA, | |
1109 | elfcpp::SHF_ALLOC, this->rel_); | |
1110 | } | |
1111 | ||
1112 | template<int size, bool big_endian> | |
1113 | void | |
1114 | Output_data_plt_sparc<size, big_endian>::do_adjust_output_section(Output_section* os) | |
1115 | { | |
1116 | os->set_entsize(0); | |
1117 | } | |
1118 | ||
1119 | // Add an entry to the PLT. | |
1120 | ||
1121 | template<int size, bool big_endian> | |
1122 | void | |
1123 | Output_data_plt_sparc<size, big_endian>::add_entry(Symbol* gsym) | |
1124 | { | |
1125 | gold_assert(!gsym->has_plt_offset()); | |
1126 | ||
1127 | unsigned int index = this->count_ + 4; | |
1128 | section_offset_type plt_offset; | |
1129 | ||
1130 | if (size == 32 || index < 32768) | |
1131 | plt_offset = index * base_plt_entry_size; | |
1132 | else | |
1133 | { | |
1134 | unsigned int ext_index = index - 32768; | |
1135 | ||
1136 | plt_offset = (32768 * base_plt_entry_size) | |
1137 | + ((ext_index / plt_entries_per_block) | |
1138 | * plt_block_size) | |
1139 | + ((ext_index % plt_entries_per_block) | |
1140 | * plt_insn_chunk_size); | |
1141 | } | |
1142 | ||
1143 | gsym->set_plt_offset(plt_offset); | |
1144 | ||
1145 | ++this->count_; | |
1146 | ||
1147 | // Every PLT entry needs a reloc. | |
1148 | gsym->set_needs_dynsym_entry(); | |
1149 | this->rel_->add_global(gsym, elfcpp::R_SPARC_JMP_SLOT, this, | |
1150 | plt_offset, 0); | |
1151 | ||
1152 | // Note that we don't need to save the symbol. The contents of the | |
1153 | // PLT are independent of which symbols are used. The symbols only | |
1154 | // appear in the relocations. | |
1155 | } | |
1156 | ||
1157 | static const unsigned int sparc_nop = 0x01000000; | |
1158 | static const unsigned int sparc_sethi_g1 = 0x03000000; | |
1159 | static const unsigned int sparc_branch_always = 0x30800000; | |
1160 | static const unsigned int sparc_branch_always_pt = 0x30680000; | |
1161 | static const unsigned int sparc_mov = 0x80100000; | |
1162 | static const unsigned int sparc_mov_g0_o0 = 0x90100000; | |
1163 | static const unsigned int sparc_mov_o7_g5 = 0x8a10000f; | |
1164 | static const unsigned int sparc_call_plus_8 = 0x40000002; | |
1165 | static const unsigned int sparc_ldx_o7_imm_g1 = 0xc25be000; | |
1166 | static const unsigned int sparc_jmpl_o7_g1_g1 = 0x83c3c001; | |
1167 | static const unsigned int sparc_mov_g5_o7 = 0x9e100005; | |
1168 | ||
1169 | // Write out the PLT. | |
1170 | ||
1171 | template<int size, bool big_endian> | |
1172 | void | |
1173 | Output_data_plt_sparc<size, big_endian>::do_write(Output_file* of) | |
1174 | { | |
1175 | const off_t offset = this->offset(); | |
1176 | const section_size_type oview_size = | |
1177 | convert_to_section_size_type(this->data_size()); | |
1178 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
1179 | unsigned char* pov = oview; | |
1180 | ||
1181 | memset(pov, 0, base_plt_entry_size * 4); | |
1182 | pov += base_plt_entry_size * 4; | |
1183 | ||
1184 | unsigned int plt_offset = base_plt_entry_size * 4; | |
1185 | const unsigned int count = this->count_; | |
1186 | ||
1187 | if (size == 64) | |
1188 | { | |
1189 | unsigned int limit; | |
1190 | ||
1191 | limit = (count > 32768 ? 32768 : count); | |
1192 | ||
1193 | for (unsigned int i = 0; i < limit; ++i) | |
1194 | { | |
1195 | elfcpp::Swap<32, true>::writeval(pov + 0x00, | |
1196 | sparc_sethi_g1 + plt_offset); | |
1197 | elfcpp::Swap<32, true>::writeval(pov + 0x04, | |
1198 | sparc_branch_always_pt + | |
1199 | (((base_plt_entry_size - | |
1200 | (plt_offset + 4)) >> 2) & | |
1201 | 0x7ffff)); | |
1202 | elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop); | |
1203 | elfcpp::Swap<32, true>::writeval(pov + 0x0c, sparc_nop); | |
1204 | elfcpp::Swap<32, true>::writeval(pov + 0x10, sparc_nop); | |
1205 | elfcpp::Swap<32, true>::writeval(pov + 0x14, sparc_nop); | |
1206 | elfcpp::Swap<32, true>::writeval(pov + 0x18, sparc_nop); | |
1207 | elfcpp::Swap<32, true>::writeval(pov + 0x1c, sparc_nop); | |
1208 | ||
1209 | pov += base_plt_entry_size; | |
1210 | plt_offset += base_plt_entry_size; | |
1211 | } | |
1212 | ||
1213 | if (count > 32768) | |
1214 | { | |
1215 | unsigned int ext_cnt = count - 32768; | |
1216 | unsigned int blks = ext_cnt / plt_entries_per_block; | |
1217 | ||
1218 | for (unsigned int i = 0; i < blks; ++i) | |
1219 | { | |
1220 | unsigned int data_off = (plt_entries_per_block | |
1221 | * plt_insn_chunk_size) - 4; | |
1222 | ||
1223 | for (unsigned int j = 0; j < plt_entries_per_block; ++j) | |
1224 | { | |
1225 | elfcpp::Swap<32, true>::writeval(pov + 0x00, | |
1226 | sparc_mov_o7_g5); | |
1227 | elfcpp::Swap<32, true>::writeval(pov + 0x04, | |
1228 | sparc_call_plus_8); | |
1229 | elfcpp::Swap<32, true>::writeval(pov + 0x08, | |
1230 | sparc_nop); | |
1231 | elfcpp::Swap<32, true>::writeval(pov + 0x0c, | |
1232 | sparc_ldx_o7_imm_g1 + | |
1233 | (data_off & 0x1fff)); | |
1234 | elfcpp::Swap<32, true>::writeval(pov + 0x10, | |
1235 | sparc_jmpl_o7_g1_g1); | |
1236 | elfcpp::Swap<32, true>::writeval(pov + 0x14, | |
1237 | sparc_mov_g5_o7); | |
1238 | ||
1239 | elfcpp::Swap<64, big_endian>::writeval( | |
1240 | pov + 0x4 + data_off, | |
1241 | (elfcpp::Elf_Xword) (oview - (pov + 0x04))); | |
1242 | ||
1243 | pov += plt_insn_chunk_size; | |
1244 | data_off -= 16; | |
1245 | } | |
1246 | } | |
1247 | ||
1248 | unsigned int sub_blk_cnt = ext_cnt % plt_entries_per_block; | |
1249 | for (unsigned int i = 0; i < sub_blk_cnt; ++i) | |
1250 | { | |
1251 | unsigned int data_off = (sub_blk_cnt | |
1252 | * plt_insn_chunk_size) - 4; | |
1253 | ||
1254 | for (unsigned int j = 0; j < plt_entries_per_block; ++j) | |
1255 | { | |
1256 | elfcpp::Swap<32, true>::writeval(pov + 0x00, | |
1257 | sparc_mov_o7_g5); | |
1258 | elfcpp::Swap<32, true>::writeval(pov + 0x04, | |
1259 | sparc_call_plus_8); | |
1260 | elfcpp::Swap<32, true>::writeval(pov + 0x08, | |
1261 | sparc_nop); | |
1262 | elfcpp::Swap<32, true>::writeval(pov + 0x0c, | |
1263 | sparc_ldx_o7_imm_g1 + | |
1264 | (data_off & 0x1fff)); | |
1265 | elfcpp::Swap<32, true>::writeval(pov + 0x10, | |
1266 | sparc_jmpl_o7_g1_g1); | |
1267 | elfcpp::Swap<32, true>::writeval(pov + 0x14, | |
1268 | sparc_mov_g5_o7); | |
1269 | ||
1270 | elfcpp::Swap<64, big_endian>::writeval( | |
1271 | pov + 0x4 + data_off, | |
1272 | (elfcpp::Elf_Xword) (oview - (pov + 0x04))); | |
1273 | ||
1274 | pov += plt_insn_chunk_size; | |
1275 | data_off -= 16; | |
1276 | } | |
1277 | } | |
1278 | } | |
1279 | } | |
1280 | else | |
1281 | { | |
1282 | for (unsigned int i = 0; i < count; ++i) | |
1283 | { | |
1284 | elfcpp::Swap<32, true>::writeval(pov + 0x00, | |
1285 | sparc_sethi_g1 + plt_offset); | |
1286 | elfcpp::Swap<32, true>::writeval(pov + 0x04, | |
1287 | sparc_branch_always + | |
1288 | (((- (plt_offset + 4)) >> 2) & | |
1289 | 0x003fffff)); | |
1290 | elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop); | |
1291 | ||
1292 | pov += base_plt_entry_size; | |
1293 | plt_offset += base_plt_entry_size; | |
1294 | } | |
1295 | ||
1296 | elfcpp::Swap<32, true>::writeval(pov, sparc_nop); | |
1297 | pov += 4; | |
1298 | } | |
1299 | ||
1300 | gold_assert(static_cast<section_size_type>(pov - oview) == oview_size); | |
1301 | ||
1302 | of->write_output_view(offset, oview_size, oview); | |
1303 | } | |
1304 | ||
1305 | // Create a PLT entry for a global symbol. | |
1306 | ||
1307 | template<int size, bool big_endian> | |
1308 | void | |
1309 | Target_sparc<size, big_endian>::make_plt_entry(Symbol_table* symtab, | |
1310 | Layout* layout, | |
1311 | Symbol* gsym) | |
1312 | { | |
1313 | if (gsym->has_plt_offset()) | |
1314 | return; | |
1315 | ||
1316 | if (this->plt_ == NULL) | |
1317 | { | |
1318 | // Create the GOT sections first. | |
1319 | this->got_section(symtab, layout); | |
1320 | ||
1321 | this->plt_ = new Output_data_plt_sparc<size, big_endian>(layout); | |
1322 | layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS, | |
1323 | (elfcpp::SHF_ALLOC | |
1324 | | elfcpp::SHF_EXECINSTR | |
1325 | | elfcpp::SHF_WRITE), | |
1326 | this->plt_); | |
1327 | ||
1328 | // Define _PROCEDURE_LINKAGE_TABLE_ at the start of the .plt section. | |
1329 | symtab->define_in_output_data("_PROCEDURE_LINKAGE_TABLE_", NULL, | |
1330 | this->plt_, | |
1331 | 0, 0, elfcpp::STT_OBJECT, | |
1332 | elfcpp::STB_LOCAL, | |
1333 | elfcpp::STV_HIDDEN, 0, | |
1334 | false, false); | |
1335 | } | |
1336 | ||
1337 | this->plt_->add_entry(gsym); | |
1338 | } | |
1339 | ||
1340 | // Create a GOT entry for the TLS module index. | |
1341 | ||
1342 | template<int size, bool big_endian> | |
1343 | unsigned int | |
1344 | Target_sparc<size, big_endian>::got_mod_index_entry(Symbol_table* symtab, | |
1345 | Layout* layout, | |
1346 | Sized_relobj<size, big_endian>* object) | |
1347 | { | |
1348 | if (this->got_mod_index_offset_ == -1U) | |
1349 | { | |
1350 | gold_assert(symtab != NULL && layout != NULL && object != NULL); | |
1351 | Reloc_section* rela_dyn = this->rela_dyn_section(layout); | |
1352 | Output_data_got<size, big_endian>* got; | |
1353 | unsigned int got_offset; | |
1354 | ||
1355 | got = this->got_section(symtab, layout); | |
1356 | got_offset = got->add_constant(0); | |
1357 | rela_dyn->add_local(object, 0, | |
1358 | (size == 64 ? | |
1359 | elfcpp::R_SPARC_TLS_DTPMOD64 : | |
1360 | elfcpp::R_SPARC_TLS_DTPMOD32), got, | |
1361 | got_offset, 0); | |
1362 | got->add_constant(0); | |
1363 | this->got_mod_index_offset_ = got_offset; | |
1364 | } | |
1365 | return this->got_mod_index_offset_; | |
1366 | } | |
1367 | ||
1368 | // Handle a relocation against a non-function symbol defined in a | |
1369 | // dynamic object. The traditional way to handle this is to generate | |
1370 | // a COPY relocation to copy the variable at runtime from the shared | |
1371 | // object into the executable's data segment. However, this is | |
1372 | // undesirable in general, as if the size of the object changes in the | |
1373 | // dynamic object, the executable will no longer work correctly. If | |
1374 | // this relocation is in a writable section, then we can create a | |
1375 | // dynamic reloc and the dynamic linker will resolve it to the correct | |
1376 | // address at runtime. However, we do not want do that if the | |
1377 | // relocation is in a read-only section, as it would prevent the | |
1378 | // readonly segment from being shared. And if we have to eventually | |
1379 | // generate a COPY reloc, then any dynamic relocations will be | |
1380 | // useless. So this means that if this is a writable section, we need | |
1381 | // to save the relocation until we see whether we have to create a | |
1382 | // COPY relocation for this symbol for any other relocation. | |
1383 | ||
1384 | template<int size, bool big_endian> | |
1385 | void | |
1386 | Target_sparc<size, big_endian>::copy_reloc(const General_options* options, | |
1387 | Symbol_table* symtab, | |
1388 | Layout* layout, | |
1389 | Sized_relobj<size, big_endian>* object, | |
1390 | unsigned int data_shndx, | |
1391 | Output_section* output_section, | |
1392 | Symbol* gsym, | |
1393 | const elfcpp::Rela<size, big_endian>& rel) | |
1394 | { | |
1395 | Sized_symbol<size>* ssym = symtab->get_sized_symbol<size>(gsym); | |
1396 | ||
1397 | if (!Copy_relocs<size, big_endian>::need_copy_reloc(options, object, | |
1398 | data_shndx, ssym)) | |
1399 | { | |
1400 | // So far we do not need a COPY reloc. Save this relocation. | |
1401 | // If it turns out that we never need a COPY reloc for this | |
1402 | // symbol, then we will emit the relocation. | |
1403 | if (this->copy_relocs_ == NULL) | |
1404 | this->copy_relocs_ = new Copy_relocs<size, big_endian>(); | |
1405 | this->copy_relocs_->save(ssym, object, data_shndx, output_section, rel); | |
1406 | } | |
1407 | else | |
1408 | { | |
1409 | // Allocate space for this symbol in the .bss section. | |
1410 | ||
1411 | typename elfcpp::Elf_types<size>::Elf_WXword symsize = ssym->symsize(); | |
1412 | ||
1413 | // There is no defined way to determine the required alignment | |
1414 | // of the symbol. We pick the alignment based on the size. We | |
1415 | // set an arbitrary maximum of 256. | |
1416 | unsigned int align; | |
1417 | // XXX remove this when bss alignment issue is fixed... | |
1418 | for (align = (size == 32 ? 4 : 8); align < 512; align <<= 1) | |
1419 | if ((symsize & align) != 0) | |
1420 | break; | |
1421 | ||
1422 | if (this->dynbss_ == NULL) | |
1423 | { | |
1424 | this->dynbss_ = new Output_data_space(align); | |
1425 | layout->add_output_section_data(".bss", | |
1426 | elfcpp::SHT_NOBITS, | |
1427 | (elfcpp::SHF_ALLOC | |
1428 | | elfcpp::SHF_WRITE), | |
1429 | this->dynbss_); | |
1430 | } | |
1431 | ||
1432 | Output_data_space* dynbss = this->dynbss_; | |
1433 | ||
1434 | if (align > dynbss->addralign()) | |
1435 | dynbss->set_space_alignment(align); | |
1436 | ||
1437 | section_size_type dynbss_size = | |
1438 | convert_to_section_size_type(dynbss->current_data_size()); | |
1439 | dynbss_size = align_address(dynbss_size, align); | |
1440 | section_size_type offset = dynbss_size; | |
1441 | dynbss->set_current_data_size(dynbss_size + symsize); | |
1442 | ||
1443 | symtab->define_with_copy_reloc(ssym, dynbss, offset); | |
1444 | ||
1445 | // Add the COPY reloc. | |
1446 | Reloc_section* rela_dyn = this->rela_dyn_section(layout); | |
1447 | rela_dyn->add_global(ssym, elfcpp::R_SPARC_COPY, dynbss, offset, 0); | |
1448 | } | |
1449 | } | |
1450 | ||
1451 | // Optimize the TLS relocation type based on what we know about the | |
1452 | // symbol. IS_FINAL is true if the final address of this symbol is | |
1453 | // known at link time. | |
1454 | ||
1455 | static tls::Tls_optimization | |
1456 | optimize_tls_reloc(bool is_final, int r_type) | |
1457 | { | |
1458 | // If we are generating a shared library, then we can't do anything | |
1459 | // in the linker. | |
1460 | if (parameters->options().shared()) | |
1461 | return tls::TLSOPT_NONE; | |
1462 | ||
1463 | switch (r_type) | |
1464 | { | |
1465 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
1466 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
1467 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
1468 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
1469 | // These are General-Dynamic which permits fully general TLS | |
1470 | // access. Since we know that we are generating an executable, | |
1471 | // we can convert this to Initial-Exec. If we also know that | |
1472 | // this is a local symbol, we can further switch to Local-Exec. | |
1473 | if (is_final) | |
1474 | return tls::TLSOPT_TO_LE; | |
1475 | return tls::TLSOPT_TO_IE; | |
1476 | ||
1477 | case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic | |
1478 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
1479 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
1480 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
1481 | // This is Local-Dynamic, which refers to a local symbol in the | |
1482 | // dynamic TLS block. Since we know that we generating an | |
1483 | // executable, we can switch to Local-Exec. | |
1484 | return tls::TLSOPT_TO_LE; | |
1485 | ||
1486 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
1487 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
1488 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
1489 | // Another type of Local-Dynamic relocation. | |
1490 | return tls::TLSOPT_TO_LE; | |
1491 | ||
1492 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
1493 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
1494 | case elfcpp::R_SPARC_TLS_IE_LD: | |
1495 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
1496 | // These are Initial-Exec relocs which get the thread offset | |
1497 | // from the GOT. If we know that we are linking against the | |
1498 | // local symbol, we can switch to Local-Exec, which links the | |
1499 | // thread offset into the instruction. | |
1500 | if (is_final) | |
1501 | return tls::TLSOPT_TO_LE; | |
1502 | return tls::TLSOPT_NONE; | |
1503 | ||
1504 | case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec | |
1505 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
1506 | // When we already have Local-Exec, there is nothing further we | |
1507 | // can do. | |
1508 | return tls::TLSOPT_NONE; | |
1509 | ||
1510 | default: | |
1511 | gold_unreachable(); | |
1512 | } | |
1513 | } | |
1514 | ||
1515 | // Generate a PLT entry slot for a call to __tls_get_addr | |
1516 | template<int size, bool big_endian> | |
1517 | void | |
1518 | Target_sparc<size, big_endian>::Scan::generate_tls_call(Symbol_table* symtab, | |
1519 | Layout* layout, | |
1520 | Target_sparc<size, big_endian>* target) | |
1521 | { | |
1522 | Symbol* gsym = target->tls_get_addr_sym(symtab); | |
1523 | ||
1524 | target->make_plt_entry(symtab, layout, gsym); | |
1525 | } | |
1526 | ||
1527 | // Report an unsupported relocation against a local symbol. | |
1528 | ||
1529 | template<int size, bool big_endian> | |
1530 | void | |
1531 | Target_sparc<size, big_endian>::Scan::unsupported_reloc_local( | |
1532 | Sized_relobj<size, big_endian>* object, | |
1533 | unsigned int r_type) | |
1534 | { | |
1535 | gold_error(_("%s: unsupported reloc %u against local symbol"), | |
1536 | object->name().c_str(), r_type); | |
1537 | } | |
1538 | ||
1539 | // Scan a relocation for a local symbol. | |
1540 | ||
1541 | template<int size, bool big_endian> | |
1542 | inline void | |
1543 | Target_sparc<size, big_endian>::Scan::local( | |
1544 | const General_options&, | |
1545 | Symbol_table* symtab, | |
1546 | Layout* layout, | |
1547 | Target_sparc<size, big_endian>* target, | |
1548 | Sized_relobj<size, big_endian>* object, | |
1549 | unsigned int data_shndx, | |
1550 | Output_section* output_section, | |
1551 | const elfcpp::Rela<size, big_endian>& reloc, | |
1552 | unsigned int r_type, | |
1553 | const elfcpp::Sym<size, big_endian>& lsym) | |
1554 | { | |
1555 | unsigned int orig_r_type = r_type; | |
1556 | ||
1557 | r_type &= 0xff; | |
1558 | switch (r_type) | |
1559 | { | |
1560 | case elfcpp::R_SPARC_NONE: | |
1561 | case elfcpp::R_SPARC_REGISTER: | |
1562 | case elfcpp::R_SPARC_GNU_VTINHERIT: | |
1563 | case elfcpp::R_SPARC_GNU_VTENTRY: | |
1564 | break; | |
1565 | ||
1566 | case elfcpp::R_SPARC_64: | |
1567 | case elfcpp::R_SPARC_32: | |
1568 | // If building a shared library (or a position-independent | |
1569 | // executable), we need to create a dynamic relocation for | |
1570 | // this location. The relocation applied at link time will | |
1571 | // apply the link-time value, so we flag the location with | |
1572 | // an R_SPARC_RELATIVE relocation so the dynamic loader can | |
1573 | // relocate it easily. | |
1574 | if (parameters->options().output_is_position_independent()) | |
1575 | { | |
1576 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
1577 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
1578 | rela_dyn->add_local_relative(object, r_sym, elfcpp::R_SPARC_RELATIVE, | |
1579 | output_section, data_shndx, | |
1580 | reloc.get_r_offset(), | |
1581 | reloc.get_r_addend()); | |
1582 | } | |
1583 | break; | |
1584 | ||
1585 | case elfcpp::R_SPARC_HIX22: | |
1586 | case elfcpp::R_SPARC_LOX10: | |
1587 | case elfcpp::R_SPARC_H44: | |
1588 | case elfcpp::R_SPARC_M44: | |
1589 | case elfcpp::R_SPARC_L44: | |
1590 | case elfcpp::R_SPARC_HH22: | |
1591 | case elfcpp::R_SPARC_HM10: | |
1592 | case elfcpp::R_SPARC_LM22: | |
1593 | case elfcpp::R_SPARC_UA64: | |
1594 | case elfcpp::R_SPARC_UA32: | |
1595 | case elfcpp::R_SPARC_UA16: | |
1596 | case elfcpp::R_SPARC_HI22: | |
1597 | case elfcpp::R_SPARC_LO10: | |
1598 | case elfcpp::R_SPARC_OLO10: | |
1599 | case elfcpp::R_SPARC_16: | |
1600 | case elfcpp::R_SPARC_11: | |
1601 | case elfcpp::R_SPARC_10: | |
1602 | case elfcpp::R_SPARC_8: | |
1603 | case elfcpp::R_SPARC_7: | |
1604 | case elfcpp::R_SPARC_6: | |
1605 | case elfcpp::R_SPARC_5: | |
1606 | // If building a shared library (or a position-independent | |
1607 | // executable), we need to create a dynamic relocation for | |
1608 | // this location. | |
1609 | if (parameters->options().output_is_position_independent()) | |
1610 | { | |
1611 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
1612 | if (lsym.get_st_type() != elfcpp::STT_SECTION) | |
1613 | { | |
1614 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
1615 | rela_dyn->add_local(object, r_sym, orig_r_type, output_section, | |
1616 | data_shndx, reloc.get_r_offset(), | |
1617 | reloc.get_r_addend()); | |
1618 | } | |
1619 | else | |
1620 | { | |
1621 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
1622 | gold_assert(lsym.get_st_value() == 0); | |
1623 | rela_dyn->add_local_relative(object, r_sym, orig_r_type, | |
1624 | output_section, data_shndx, | |
1625 | reloc.get_r_offset(), | |
1626 | reloc.get_r_addend()); | |
1627 | } | |
1628 | } | |
1629 | break; | |
1630 | ||
1631 | case elfcpp::R_SPARC_WDISP30: | |
1632 | case elfcpp::R_SPARC_WDISP22: | |
1633 | case elfcpp::R_SPARC_WDISP19: | |
1634 | case elfcpp::R_SPARC_WDISP16: | |
1635 | case elfcpp::R_SPARC_DISP8: | |
1636 | case elfcpp::R_SPARC_DISP16: | |
1637 | case elfcpp::R_SPARC_DISP32: | |
1638 | case elfcpp::R_SPARC_DISP64: | |
1639 | case elfcpp::R_SPARC_PC10: | |
1640 | case elfcpp::R_SPARC_PC22: | |
1641 | break; | |
1642 | ||
1643 | case elfcpp::R_SPARC_GOT10: | |
1644 | case elfcpp::R_SPARC_GOT13: | |
1645 | case elfcpp::R_SPARC_GOT22: | |
1646 | { | |
1647 | // The symbol requires a GOT entry. | |
1648 | Output_data_got<size, big_endian>* got; | |
1649 | unsigned int r_sym; | |
1650 | ||
1651 | got = target->got_section(symtab, layout); | |
1652 | r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
1653 | ||
1654 | // If we are generating a shared object, we need to add a | |
1655 | // dynamic relocation for this symbol's GOT entry. | |
1656 | if (parameters->options().output_is_position_independent()) | |
1657 | { | |
1658 | if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)) | |
1659 | { | |
1660 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
1661 | unsigned int off; | |
1662 | ||
1663 | off = got->add_constant(0); | |
1664 | object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off); | |
1665 | rela_dyn->add_local_relative(object, r_sym, | |
1666 | elfcpp::R_SPARC_RELATIVE, | |
1667 | got, off, 0); | |
1668 | } | |
1669 | } | |
1670 | else | |
1671 | got->add_local(object, r_sym, GOT_TYPE_STANDARD); | |
1672 | } | |
1673 | break; | |
1674 | ||
1675 | // These are initial TLS relocs, which are expected when | |
1676 | // linking. | |
1677 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
1678 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
1679 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
1680 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
1681 | case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic | |
1682 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
1683 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
1684 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
1685 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
1686 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
1687 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
1688 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
1689 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
1690 | case elfcpp::R_SPARC_TLS_IE_LD: | |
1691 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
1692 | case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec | |
1693 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
1694 | { | |
1695 | bool output_is_shared = parameters->options().shared(); | |
1696 | const tls::Tls_optimization optimized_type | |
1697 | = optimize_tls_reloc(!output_is_shared, r_type); | |
1698 | switch (r_type) | |
1699 | { | |
1700 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
1701 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
1702 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
1703 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
1704 | if (optimized_type == tls::TLSOPT_NONE) | |
1705 | { | |
1706 | // Create a pair of GOT entries for the module index and | |
1707 | // dtv-relative offset. | |
1708 | Output_data_got<size, big_endian>* got | |
1709 | = target->got_section(symtab, layout); | |
1710 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
1711 | got->add_local_pair_with_rela(object, r_sym, | |
1712 | lsym.get_st_shndx(), | |
1713 | GOT_TYPE_TLS_PAIR, | |
1714 | target->rela_dyn_section(layout), | |
1715 | (size == 64 ? | |
1716 | elfcpp::R_SPARC_TLS_DTPMOD64 : | |
1717 | elfcpp::R_SPARC_TLS_DTPMOD32), 0); | |
1718 | if (r_type == elfcpp::R_SPARC_TLS_GD_CALL) | |
1719 | generate_tls_call(symtab, layout, target); | |
1720 | } | |
1721 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
1722 | unsupported_reloc_local(object, r_type); | |
1723 | break; | |
1724 | ||
1725 | case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic | |
1726 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
1727 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
1728 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
1729 | if (optimized_type == tls::TLSOPT_NONE) | |
1730 | { | |
1731 | // Create a GOT entry for the module index. | |
1732 | target->got_mod_index_entry(symtab, layout, object); | |
1733 | ||
1734 | if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL) | |
1735 | generate_tls_call(symtab, layout, target); | |
1736 | } | |
1737 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
1738 | unsupported_reloc_local(object, r_type); | |
1739 | break; | |
1740 | ||
1741 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
1742 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
1743 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
1744 | break; | |
1745 | ||
1746 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
1747 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
1748 | case elfcpp::R_SPARC_TLS_IE_LD: | |
1749 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
1750 | layout->set_has_static_tls(); | |
1751 | if (optimized_type == tls::TLSOPT_NONE) | |
1752 | { | |
1753 | // Create a GOT entry for the tp-relative offset. | |
1754 | Output_data_got<size, big_endian>* got | |
1755 | = target->got_section(symtab, layout); | |
1756 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
1757 | ||
1758 | if (!object->local_has_got_offset(r_sym, GOT_TYPE_TLS_OFFSET)) | |
1759 | { | |
1760 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
1761 | unsigned int off = got->add_constant(0); | |
1762 | ||
1763 | object->set_local_got_offset(r_sym, GOT_TYPE_TLS_OFFSET, | |
1764 | off); | |
1765 | rela_dyn->add_local_relative(object, r_sym, | |
1766 | (size == 64 ? | |
1767 | elfcpp::R_SPARC_TLS_TPOFF64 : | |
1768 | elfcpp::R_SPARC_TLS_TPOFF32), | |
1769 | got, off, 0); | |
1770 | } | |
1771 | } | |
1772 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
1773 | unsupported_reloc_local(object, r_type); | |
1774 | break; | |
1775 | ||
1776 | case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec | |
1777 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
1778 | layout->set_has_static_tls(); | |
1779 | if (output_is_shared) | |
1780 | { | |
1781 | // We need to create a dynamic relocation. | |
1782 | gold_assert(lsym.get_st_type() != elfcpp::STT_SECTION); | |
1783 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
1784 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
1785 | rela_dyn->add_local_relative(object, r_sym, r_type, | |
1786 | output_section, data_shndx, | |
1787 | reloc.get_r_offset(), 0); | |
1788 | } | |
1789 | break; | |
1790 | } | |
1791 | } | |
1792 | break; | |
1793 | ||
1794 | // These are relocations which should only be seen by the | |
1795 | // dynamic linker, and should never be seen here. | |
1796 | case elfcpp::R_SPARC_COPY: | |
1797 | case elfcpp::R_SPARC_GLOB_DAT: | |
1798 | case elfcpp::R_SPARC_JMP_SLOT: | |
1799 | case elfcpp::R_SPARC_RELATIVE: | |
1800 | case elfcpp::R_SPARC_TLS_DTPMOD64: | |
1801 | case elfcpp::R_SPARC_TLS_DTPMOD32: | |
1802 | case elfcpp::R_SPARC_TLS_DTPOFF64: | |
1803 | case elfcpp::R_SPARC_TLS_DTPOFF32: | |
1804 | case elfcpp::R_SPARC_TLS_TPOFF64: | |
1805 | case elfcpp::R_SPARC_TLS_TPOFF32: | |
1806 | gold_error(_("%s: unexpected reloc %u in object file"), | |
1807 | object->name().c_str(), r_type); | |
1808 | break; | |
1809 | ||
1810 | default: | |
1811 | unsupported_reloc_local(object, r_type); | |
1812 | break; | |
1813 | } | |
1814 | } | |
1815 | ||
1816 | // Report an unsupported relocation against a global symbol. | |
1817 | ||
1818 | template<int size, bool big_endian> | |
1819 | void | |
1820 | Target_sparc<size, big_endian>::Scan::unsupported_reloc_global( | |
1821 | Sized_relobj<size, big_endian>* object, | |
1822 | unsigned int r_type, | |
1823 | Symbol* gsym) | |
1824 | { | |
1825 | gold_error(_("%s: unsupported reloc %u against global symbol %s"), | |
1826 | object->name().c_str(), r_type, gsym->demangled_name().c_str()); | |
1827 | } | |
1828 | ||
1829 | // Scan a relocation for a global symbol. | |
1830 | ||
1831 | template<int size, bool big_endian> | |
1832 | inline void | |
1833 | Target_sparc<size, big_endian>::Scan::global( | |
1834 | const General_options& options, | |
1835 | Symbol_table* symtab, | |
1836 | Layout* layout, | |
1837 | Target_sparc<size, big_endian>* target, | |
1838 | Sized_relobj<size, big_endian>* object, | |
1839 | unsigned int data_shndx, | |
1840 | Output_section* output_section, | |
1841 | const elfcpp::Rela<size, big_endian>& reloc, | |
1842 | unsigned int r_type, | |
1843 | Symbol* gsym) | |
1844 | { | |
1845 | unsigned int orig_r_type = r_type; | |
1846 | ||
1847 | r_type &= 0xff; | |
1848 | switch (r_type) | |
1849 | { | |
1850 | case elfcpp::R_SPARC_NONE: | |
1851 | case elfcpp::R_SPARC_REGISTER: | |
1852 | case elfcpp::R_SPARC_GNU_VTINHERIT: | |
1853 | case elfcpp::R_SPARC_GNU_VTENTRY: | |
1854 | break; | |
1855 | ||
1856 | case elfcpp::R_SPARC_PLT64: | |
1857 | case elfcpp::R_SPARC_PLT32: | |
1858 | case elfcpp::R_SPARC_HIPLT22: | |
1859 | case elfcpp::R_SPARC_LOPLT10: | |
1860 | case elfcpp::R_SPARC_PCPLT32: | |
1861 | case elfcpp::R_SPARC_PCPLT22: | |
1862 | case elfcpp::R_SPARC_PCPLT10: | |
1863 | case elfcpp::R_SPARC_WPLT30: | |
1864 | // If the symbol is fully resolved, this is just a PC32 reloc. | |
1865 | // Otherwise we need a PLT entry. | |
1866 | if (gsym->final_value_is_known()) | |
1867 | break; | |
1868 | // If building a shared library, we can also skip the PLT entry | |
1869 | // if the symbol is defined in the output file and is protected | |
1870 | // or hidden. | |
1871 | if (gsym->is_defined() | |
1872 | && !gsym->is_from_dynobj() | |
1873 | && !gsym->is_preemptible()) | |
1874 | break; | |
1875 | target->make_plt_entry(symtab, layout, gsym); | |
1876 | break; | |
1877 | ||
1878 | case elfcpp::R_SPARC_DISP8: | |
1879 | case elfcpp::R_SPARC_DISP16: | |
1880 | case elfcpp::R_SPARC_DISP32: | |
1881 | case elfcpp::R_SPARC_DISP64: | |
1882 | case elfcpp::R_SPARC_PC_HH22: | |
1883 | case elfcpp::R_SPARC_PC_HM10: | |
1884 | case elfcpp::R_SPARC_PC_LM22: | |
1885 | case elfcpp::R_SPARC_PC10: | |
1886 | case elfcpp::R_SPARC_PC22: | |
1887 | case elfcpp::R_SPARC_WDISP30: | |
1888 | case elfcpp::R_SPARC_WDISP22: | |
1889 | case elfcpp::R_SPARC_WDISP19: | |
1890 | case elfcpp::R_SPARC_WDISP16: | |
1891 | { | |
1892 | if (gsym->needs_plt_entry()) | |
1893 | target->make_plt_entry(symtab, layout, gsym); | |
1894 | // Make a dynamic relocation if necessary. | |
1895 | int flags = Symbol::NON_PIC_REF; | |
1896 | if (gsym->type() == elfcpp::STT_FUNC) | |
1897 | flags |= Symbol::FUNCTION_CALL; | |
1898 | if (gsym->needs_dynamic_reloc(flags)) | |
1899 | { | |
1900 | if (target->may_need_copy_reloc(gsym)) | |
1901 | { | |
1902 | target->copy_reloc(&options, symtab, layout, object, | |
1903 | data_shndx, output_section, gsym, | |
1904 | reloc); | |
1905 | } | |
1906 | else | |
1907 | { | |
1908 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
1909 | rela_dyn->add_global(gsym, orig_r_type, output_section, object, | |
1910 | data_shndx, reloc.get_r_offset(), | |
1911 | reloc.get_r_addend()); | |
1912 | } | |
1913 | } | |
1914 | } | |
1915 | break; | |
1916 | ||
1917 | case elfcpp::R_SPARC_UA64: | |
1918 | case elfcpp::R_SPARC_64: | |
1919 | case elfcpp::R_SPARC_HIX22: | |
1920 | case elfcpp::R_SPARC_LOX10: | |
1921 | case elfcpp::R_SPARC_H44: | |
1922 | case elfcpp::R_SPARC_M44: | |
1923 | case elfcpp::R_SPARC_L44: | |
1924 | case elfcpp::R_SPARC_HH22: | |
1925 | case elfcpp::R_SPARC_HM10: | |
1926 | case elfcpp::R_SPARC_LM22: | |
1927 | case elfcpp::R_SPARC_HI22: | |
1928 | case elfcpp::R_SPARC_LO10: | |
1929 | case elfcpp::R_SPARC_OLO10: | |
1930 | case elfcpp::R_SPARC_UA32: | |
1931 | case elfcpp::R_SPARC_32: | |
1932 | case elfcpp::R_SPARC_UA16: | |
1933 | case elfcpp::R_SPARC_16: | |
1934 | case elfcpp::R_SPARC_11: | |
1935 | case elfcpp::R_SPARC_10: | |
1936 | case elfcpp::R_SPARC_8: | |
1937 | case elfcpp::R_SPARC_7: | |
1938 | case elfcpp::R_SPARC_6: | |
1939 | case elfcpp::R_SPARC_5: | |
1940 | { | |
1941 | // Make a PLT entry if necessary. | |
1942 | if (gsym->needs_plt_entry()) | |
1943 | { | |
1944 | target->make_plt_entry(symtab, layout, gsym); | |
1945 | // Since this is not a PC-relative relocation, we may be | |
1946 | // taking the address of a function. In that case we need to | |
1947 | // set the entry in the dynamic symbol table to the address of | |
1948 | // the PLT entry. | |
1949 | if (gsym->is_from_dynobj() && !parameters->options().shared()) | |
1950 | gsym->set_needs_dynsym_value(); | |
1951 | } | |
1952 | // Make a dynamic relocation if necessary. | |
1953 | if (gsym->needs_dynamic_reloc(Symbol::ABSOLUTE_REF)) | |
1954 | { | |
1955 | if (target->may_need_copy_reloc(gsym)) | |
1956 | { | |
1957 | target->copy_reloc(&options, symtab, layout, object, | |
1958 | data_shndx, output_section, gsym, reloc); | |
1959 | } | |
1960 | else if ((r_type == elfcpp::R_SPARC_32 | |
1961 | || r_type == elfcpp::R_SPARC_64) | |
1962 | && gsym->can_use_relative_reloc(false)) | |
1963 | { | |
1964 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
1965 | rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE, | |
1966 | output_section, object, | |
1967 | data_shndx, reloc.get_r_offset(), | |
1968 | reloc.get_r_addend()); | |
1969 | } | |
1970 | else | |
1971 | { | |
1972 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
1973 | ||
1974 | if (gsym->is_from_dynobj() | |
1975 | || gsym->is_undefined() | |
1976 | || gsym->is_preemptible()) | |
1977 | rela_dyn->add_global(gsym, orig_r_type, output_section, | |
1978 | object, data_shndx, | |
1979 | reloc.get_r_offset(), | |
1980 | reloc.get_r_addend()); | |
1981 | else | |
1982 | rela_dyn->add_global_relative(gsym, orig_r_type, | |
1983 | output_section, object, | |
1984 | data_shndx, | |
1985 | reloc.get_r_offset(), | |
1986 | reloc.get_r_addend()); | |
1987 | } | |
1988 | } | |
1989 | } | |
1990 | break; | |
1991 | ||
1992 | case elfcpp::R_SPARC_GOT10: | |
1993 | case elfcpp::R_SPARC_GOT13: | |
1994 | case elfcpp::R_SPARC_GOT22: | |
1995 | { | |
1996 | // The symbol requires a GOT entry. | |
1997 | Output_data_got<size, big_endian>* got; | |
1998 | ||
1999 | got = target->got_section(symtab, layout); | |
2000 | if (gsym->final_value_is_known()) | |
2001 | got->add_global(gsym, GOT_TYPE_STANDARD); | |
2002 | else | |
2003 | { | |
2004 | // If this symbol is not fully resolved, we need to add a | |
2005 | // dynamic relocation for it. | |
2006 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
2007 | if (gsym->is_from_dynobj() | |
2008 | || gsym->is_undefined() | |
2009 | || gsym->is_preemptible()) | |
2010 | got->add_global_with_rela(gsym, GOT_TYPE_STANDARD, rela_dyn, | |
2011 | elfcpp::R_SPARC_GLOB_DAT); | |
2012 | else if (!gsym->has_got_offset(GOT_TYPE_STANDARD)) | |
2013 | { | |
2014 | unsigned int off = got->add_constant(0); | |
2015 | ||
2016 | gsym->set_got_offset(GOT_TYPE_STANDARD, off); | |
2017 | rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE, | |
2018 | got, off, 0); | |
2019 | } | |
2020 | } | |
2021 | } | |
2022 | break; | |
2023 | ||
2024 | // These are initial tls relocs, which are expected when | |
2025 | // linking. | |
2026 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
2027 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2028 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2029 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2030 | case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic | |
2031 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2032 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2033 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2034 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
2035 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
2036 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
2037 | case elfcpp::R_SPARC_TLS_LE_HIX22: | |
2038 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
2039 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
2040 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2041 | case elfcpp::R_SPARC_TLS_IE_LD: | |
2042 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
2043 | { | |
2044 | const bool is_final = gsym->final_value_is_known(); | |
2045 | const tls::Tls_optimization optimized_type | |
2046 | = optimize_tls_reloc(is_final, r_type); | |
2047 | switch (r_type) | |
2048 | { | |
2049 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
2050 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2051 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2052 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2053 | if (optimized_type == tls::TLSOPT_NONE) | |
2054 | { | |
2055 | // Create a pair of GOT entries for the module index and | |
2056 | // dtv-relative offset. | |
2057 | Output_data_got<size, big_endian>* got | |
2058 | = target->got_section(symtab, layout); | |
2059 | got->add_global_pair_with_rela(gsym, GOT_TYPE_TLS_PAIR, | |
2060 | target->rela_dyn_section(layout), | |
2061 | (size == 64 ? | |
2062 | elfcpp::R_SPARC_TLS_DTPMOD64 : | |
2063 | elfcpp::R_SPARC_TLS_DTPMOD32), | |
2064 | (size == 64 ? | |
2065 | elfcpp::R_SPARC_TLS_DTPOFF64 : | |
2066 | elfcpp::R_SPARC_TLS_DTPOFF32)); | |
2067 | ||
2068 | // Emit R_SPARC_WPLT30 against "__tls_get_addr" | |
2069 | if (r_type == elfcpp::R_SPARC_TLS_GD_CALL) | |
2070 | generate_tls_call(symtab, layout, target); | |
2071 | } | |
2072 | else if (optimized_type == tls::TLSOPT_TO_IE) | |
2073 | { | |
2074 | // Create a GOT entry for the tp-relative offset. | |
2075 | Output_data_got<size, big_endian>* got | |
2076 | = target->got_section(symtab, layout); | |
2077 | got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET, | |
2078 | target->rela_dyn_section(layout), | |
2079 | (size == 64 ? | |
2080 | elfcpp::R_SPARC_TLS_TPOFF64 : | |
2081 | elfcpp::R_SPARC_TLS_TPOFF32)); | |
2082 | } | |
2083 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
2084 | unsupported_reloc_global(object, r_type, gsym); | |
2085 | break; | |
2086 | ||
2087 | case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic | |
2088 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2089 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2090 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2091 | if (optimized_type == tls::TLSOPT_NONE) | |
2092 | { | |
2093 | // Create a GOT entry for the module index. | |
2094 | target->got_mod_index_entry(symtab, layout, object); | |
2095 | ||
2096 | if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL) | |
2097 | generate_tls_call(symtab, layout, target); | |
2098 | } | |
2099 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
2100 | unsupported_reloc_global(object, r_type, gsym); | |
2101 | break; | |
2102 | ||
2103 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
2104 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
2105 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
2106 | break; | |
2107 | ||
2108 | case elfcpp::R_SPARC_TLS_LE_HIX22: | |
2109 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
2110 | layout->set_has_static_tls(); | |
2111 | if (parameters->options().shared()) | |
2112 | { | |
2113 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
2114 | rela_dyn->add_global_relative(gsym, orig_r_type, | |
2115 | output_section, object, | |
2116 | data_shndx, reloc.get_r_offset(), | |
2117 | 0); | |
2118 | } | |
2119 | break; | |
2120 | ||
2121 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
2122 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2123 | case elfcpp::R_SPARC_TLS_IE_LD: | |
2124 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
2125 | layout->set_has_static_tls(); | |
2126 | if (optimized_type == tls::TLSOPT_NONE) | |
2127 | { | |
2128 | // Create a GOT entry for the tp-relative offset. | |
2129 | Output_data_got<size, big_endian>* got | |
2130 | = target->got_section(symtab, layout); | |
2131 | got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET, | |
2132 | target->rela_dyn_section(layout), | |
2133 | (size == 64 ? | |
2134 | elfcpp::R_SPARC_TLS_TPOFF64 : | |
2135 | elfcpp::R_SPARC_TLS_TPOFF32)); | |
2136 | } | |
2137 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
2138 | unsupported_reloc_global(object, r_type, gsym); | |
2139 | break; | |
2140 | } | |
2141 | } | |
2142 | break; | |
2143 | ||
2144 | // These are relocations which should only be seen by the | |
2145 | // dynamic linker, and should never be seen here. | |
2146 | case elfcpp::R_SPARC_COPY: | |
2147 | case elfcpp::R_SPARC_GLOB_DAT: | |
2148 | case elfcpp::R_SPARC_JMP_SLOT: | |
2149 | case elfcpp::R_SPARC_RELATIVE: | |
2150 | case elfcpp::R_SPARC_TLS_DTPMOD64: | |
2151 | case elfcpp::R_SPARC_TLS_DTPMOD32: | |
2152 | case elfcpp::R_SPARC_TLS_DTPOFF64: | |
2153 | case elfcpp::R_SPARC_TLS_DTPOFF32: | |
2154 | case elfcpp::R_SPARC_TLS_TPOFF64: | |
2155 | case elfcpp::R_SPARC_TLS_TPOFF32: | |
2156 | gold_error(_("%s: unexpected reloc %u in object file"), | |
2157 | object->name().c_str(), r_type); | |
2158 | break; | |
2159 | ||
2160 | default: | |
2161 | unsupported_reloc_global(object, r_type, gsym); | |
2162 | break; | |
2163 | } | |
2164 | } | |
2165 | ||
2166 | // Scan relocations for a section. | |
2167 | ||
2168 | template<int size, bool big_endian> | |
2169 | void | |
2170 | Target_sparc<size, big_endian>::scan_relocs( | |
2171 | const General_options& options, | |
2172 | Symbol_table* symtab, | |
2173 | Layout* layout, | |
2174 | Sized_relobj<size, big_endian>* object, | |
2175 | unsigned int data_shndx, | |
2176 | unsigned int sh_type, | |
2177 | const unsigned char* prelocs, | |
2178 | size_t reloc_count, | |
2179 | Output_section* output_section, | |
2180 | bool needs_special_offset_handling, | |
2181 | size_t local_symbol_count, | |
2182 | const unsigned char* plocal_symbols) | |
2183 | { | |
2184 | typedef Target_sparc<size, big_endian> Sparc; | |
2185 | typedef typename Target_sparc<size, big_endian>::Scan Scan; | |
2186 | ||
2187 | if (sh_type == elfcpp::SHT_REL) | |
2188 | { | |
2189 | gold_error(_("%s: unsupported REL reloc section"), | |
2190 | object->name().c_str()); | |
2191 | return; | |
2192 | } | |
2193 | ||
2194 | gold::scan_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>( | |
2195 | options, | |
2196 | symtab, | |
2197 | layout, | |
2198 | this, | |
2199 | object, | |
2200 | data_shndx, | |
2201 | prelocs, | |
2202 | reloc_count, | |
2203 | output_section, | |
2204 | needs_special_offset_handling, | |
2205 | local_symbol_count, | |
2206 | plocal_symbols); | |
2207 | } | |
2208 | ||
2209 | // Finalize the sections. | |
2210 | ||
2211 | template<int size, bool big_endian> | |
2212 | void | |
2213 | Target_sparc<size, big_endian>::do_finalize_sections(Layout* layout) | |
2214 | { | |
2215 | // Fill in some more dynamic tags. | |
2216 | Output_data_dynamic* const odyn = layout->dynamic_data(); | |
2217 | if (odyn != NULL) | |
2218 | { | |
2219 | if (this->plt_ != NULL) | |
2220 | { | |
2221 | const Output_data* od = this->plt_->rel_plt(); | |
2222 | odyn->add_section_size(elfcpp::DT_PLTRELSZ, od); | |
2223 | odyn->add_section_address(elfcpp::DT_JMPREL, od); | |
2224 | odyn->add_constant(elfcpp::DT_PLTREL, elfcpp::DT_RELA); | |
2225 | ||
2226 | odyn->add_section_address(elfcpp::DT_PLTGOT, this->plt_); | |
2227 | } | |
2228 | ||
2229 | if (this->rela_dyn_ != NULL) | |
2230 | { | |
2231 | const Output_data* od = this->rela_dyn_; | |
2232 | odyn->add_section_address(elfcpp::DT_RELA, od); | |
2233 | odyn->add_section_size(elfcpp::DT_RELASZ, od); | |
2234 | odyn->add_constant(elfcpp::DT_RELAENT, | |
2235 | elfcpp::Elf_sizes<size>::rela_size); | |
2236 | } | |
2237 | ||
2238 | if (!parameters->options().shared()) | |
2239 | { | |
2240 | // The value of the DT_DEBUG tag is filled in by the dynamic | |
2241 | // linker at run time, and used by the debugger. | |
2242 | odyn->add_constant(elfcpp::DT_DEBUG, 0); | |
2243 | } | |
2244 | } | |
2245 | ||
2246 | // Emit any relocs we saved in an attempt to avoid generating COPY | |
2247 | // relocs. | |
2248 | if (this->copy_relocs_ == NULL) | |
2249 | return; | |
2250 | if (this->copy_relocs_->any_to_emit()) | |
2251 | { | |
2252 | Reloc_section* rela_dyn = this->rela_dyn_section(layout); | |
2253 | this->copy_relocs_->emit(rela_dyn); | |
2254 | } | |
2255 | delete this->copy_relocs_; | |
2256 | this->copy_relocs_ = NULL; | |
2257 | } | |
2258 | ||
2259 | // Perform a relocation. | |
2260 | ||
2261 | template<int size, bool big_endian> | |
2262 | inline bool | |
2263 | Target_sparc<size, big_endian>::Relocate::relocate( | |
2264 | const Relocate_info<size, big_endian>* relinfo, | |
2265 | Target_sparc* target, | |
2266 | size_t relnum, | |
2267 | const elfcpp::Rela<size, big_endian>& rela, | |
2268 | unsigned int r_type, | |
2269 | const Sized_symbol<size>* gsym, | |
2270 | const Symbol_value<size>* psymval, | |
2271 | unsigned char* view, | |
2272 | typename elfcpp::Elf_types<size>::Elf_Addr address, | |
2273 | section_size_type view_size) | |
2274 | { | |
2275 | r_type &= 0xff; | |
2276 | ||
2277 | if (this->ignore_gd_add_) | |
2278 | { | |
2279 | if (r_type != elfcpp::R_SPARC_TLS_GD_ADD) | |
2280 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
2281 | _("missing expected TLS relocation")); | |
2282 | else | |
2283 | { | |
2284 | this->ignore_gd_add_ = false; | |
2285 | return false; | |
2286 | } | |
2287 | } | |
2288 | ||
2289 | typedef Sparc_relocate_functions<size, big_endian> Reloc; | |
2290 | ||
2291 | // Pick the value to use for symbols defined in shared objects. | |
2292 | Symbol_value<size> symval; | |
2293 | if (gsym != NULL | |
2294 | && (gsym->is_from_dynobj() | |
2295 | || (parameters->options().shared() | |
2296 | && (gsym->is_undefined() || gsym->is_preemptible()))) | |
2297 | && gsym->has_plt_offset()) | |
2298 | { | |
2299 | elfcpp::Elf_Xword value; | |
2300 | ||
2301 | value = target->plt_section()->address() + gsym->plt_offset(); | |
2302 | ||
2303 | symval.set_output_value(value); | |
2304 | ||
2305 | psymval = &symval; | |
2306 | } | |
2307 | ||
2308 | const Sized_relobj<size, big_endian>* object = relinfo->object; | |
2309 | const elfcpp::Elf_Xword addend = rela.get_r_addend(); | |
2310 | ||
2311 | // Get the GOT offset if needed. Unlike i386 and x86_64, our GOT | |
2312 | // pointer points to the beginning, not the end, of the table. | |
2313 | // So we just use the plain offset. | |
2314 | bool have_got_offset = false; | |
2315 | unsigned int got_offset = 0; | |
2316 | switch (r_type) | |
2317 | { | |
2318 | case elfcpp::R_SPARC_GOT10: | |
2319 | case elfcpp::R_SPARC_GOT13: | |
2320 | case elfcpp::R_SPARC_GOT22: | |
2321 | if (gsym != NULL) | |
2322 | { | |
2323 | gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD)); | |
2324 | got_offset = gsym->got_offset(GOT_TYPE_STANDARD); | |
2325 | } | |
2326 | else | |
2327 | { | |
2328 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
2329 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)); | |
2330 | got_offset = object->local_got_offset(r_sym, GOT_TYPE_STANDARD); | |
2331 | } | |
2332 | have_got_offset = true; | |
2333 | break; | |
2334 | ||
2335 | default: | |
2336 | break; | |
2337 | } | |
2338 | ||
2339 | switch (r_type) | |
2340 | { | |
2341 | case elfcpp::R_SPARC_NONE: | |
2342 | case elfcpp::R_SPARC_REGISTER: | |
2343 | case elfcpp::R_SPARC_GNU_VTINHERIT: | |
2344 | case elfcpp::R_SPARC_GNU_VTENTRY: | |
2345 | break; | |
2346 | ||
2347 | case elfcpp::R_SPARC_8: | |
2348 | Relocate_functions<size, big_endian>::rela8(view, object, | |
2349 | psymval, addend); | |
2350 | break; | |
2351 | ||
2352 | case elfcpp::R_SPARC_16: | |
2353 | Relocate_functions<size, big_endian>::rela16(view, object, | |
2354 | psymval, addend); | |
2355 | break; | |
2356 | ||
2357 | case elfcpp::R_SPARC_32: | |
2358 | if (!parameters->options().output_is_position_independent()) | |
2359 | Relocate_functions<size, big_endian>::rela32(view, object, | |
2360 | psymval, addend); | |
2361 | break; | |
2362 | ||
2363 | case elfcpp::R_SPARC_DISP8: | |
2364 | Reloc::disp8(view, object, psymval, addend, address); | |
2365 | break; | |
2366 | ||
2367 | case elfcpp::R_SPARC_DISP16: | |
2368 | Reloc::disp16(view, object, psymval, addend, address); | |
2369 | break; | |
2370 | ||
2371 | case elfcpp::R_SPARC_DISP32: | |
2372 | Reloc::disp32(view, object, psymval, addend, address); | |
2373 | break; | |
2374 | ||
2375 | case elfcpp::R_SPARC_DISP64: | |
2376 | Reloc::disp64(view, object, psymval, addend, address); | |
2377 | break; | |
2378 | ||
2379 | case elfcpp::R_SPARC_WDISP30: | |
2380 | case elfcpp::R_SPARC_WPLT30: | |
2381 | Reloc::wdisp30(view, object, psymval, addend, address); | |
2382 | break; | |
2383 | ||
2384 | case elfcpp::R_SPARC_WDISP22: | |
2385 | Reloc::wdisp22(view, object, psymval, addend, address); | |
2386 | break; | |
2387 | ||
2388 | case elfcpp::R_SPARC_WDISP19: | |
2389 | Reloc::wdisp19(view, object, psymval, addend, address); | |
2390 | break; | |
2391 | ||
2392 | case elfcpp::R_SPARC_WDISP16: | |
2393 | Reloc::wdisp16(view, object, psymval, addend, address); | |
2394 | break; | |
2395 | ||
2396 | case elfcpp::R_SPARC_HI22: | |
2397 | Reloc::hi22(view, object, psymval, addend); | |
2398 | break; | |
2399 | ||
2400 | case elfcpp::R_SPARC_22: | |
2401 | Reloc::rela32_22(view, object, psymval, addend); | |
2402 | break; | |
2403 | ||
2404 | case elfcpp::R_SPARC_13: | |
2405 | Reloc::rela32_13(view, object, psymval, addend); | |
2406 | break; | |
2407 | ||
2408 | case elfcpp::R_SPARC_LO10: | |
2409 | Reloc::lo10(view, object, psymval, addend); | |
2410 | break; | |
2411 | ||
2412 | case elfcpp::R_SPARC_GOT10: | |
2413 | Reloc::lo10(view, got_offset, addend); | |
2414 | break; | |
2415 | ||
2416 | case elfcpp::R_SPARC_GOT13: | |
2417 | Reloc::rela32_13(view, got_offset, addend); | |
2418 | break; | |
2419 | ||
2420 | case elfcpp::R_SPARC_GOT22: | |
2421 | Reloc::hi22(view, got_offset, addend); | |
2422 | break; | |
2423 | ||
2424 | case elfcpp::R_SPARC_PC10: | |
2425 | Reloc::pc10(view, object, psymval, addend, address); | |
2426 | break; | |
2427 | ||
2428 | case elfcpp::R_SPARC_PC22: | |
2429 | Reloc::pc22(view, object, psymval, addend, address); | |
2430 | break; | |
2431 | ||
2432 | case elfcpp::R_SPARC_TLS_DTPOFF32: | |
2433 | case elfcpp::R_SPARC_UA32: | |
2434 | Reloc::ua32(view, object, psymval, addend); | |
2435 | break; | |
2436 | ||
2437 | case elfcpp::R_SPARC_PLT64: | |
2438 | Relocate_functions<size, big_endian>::rela64(view, object, | |
2439 | psymval, addend); | |
2440 | break; | |
2441 | ||
2442 | case elfcpp::R_SPARC_PLT32: | |
2443 | Relocate_functions<size, big_endian>::rela32(view, object, | |
2444 | psymval, addend); | |
2445 | break; | |
2446 | ||
2447 | case elfcpp::R_SPARC_HIPLT22: | |
2448 | Reloc::hi22(view, object, psymval, addend); | |
2449 | break; | |
2450 | ||
2451 | case elfcpp::R_SPARC_LOPLT10: | |
2452 | Reloc::lo10(view, object, psymval, addend); | |
2453 | break; | |
2454 | ||
2455 | case elfcpp::R_SPARC_PCPLT32: | |
2456 | Reloc::disp32(view, object, psymval, addend, address); | |
2457 | break; | |
2458 | ||
2459 | case elfcpp::R_SPARC_PCPLT22: | |
2460 | Reloc::pcplt22(view, object, psymval, addend, address); | |
2461 | break; | |
2462 | ||
2463 | case elfcpp::R_SPARC_PCPLT10: | |
2464 | Reloc::lo10(view, object, psymval, addend, address); | |
2465 | break; | |
2466 | ||
2467 | case elfcpp::R_SPARC_64: | |
2468 | if (!parameters->options().output_is_position_independent()) | |
2469 | Relocate_functions<size, big_endian>::rela64(view, object, | |
2470 | psymval, addend); | |
2471 | break; | |
2472 | ||
2473 | case elfcpp::R_SPARC_OLO10: | |
2474 | { | |
2475 | unsigned int addend2 = rela.get_r_info() & 0xffffffff; | |
2476 | addend2 = ((addend2 >> 8) ^ 0x800000) - 0x800000; | |
2477 | Reloc::olo10(view, object, psymval, addend, addend2); | |
2478 | } | |
2479 | break; | |
2480 | ||
2481 | case elfcpp::R_SPARC_HH22: | |
2482 | Reloc::hh22(view, object, psymval, addend); | |
2483 | break; | |
2484 | ||
2485 | case elfcpp::R_SPARC_PC_HH22: | |
2486 | Reloc::pc_hh22(view, object, psymval, addend, address); | |
2487 | break; | |
2488 | ||
2489 | case elfcpp::R_SPARC_HM10: | |
2490 | Reloc::hm10(view, object, psymval, addend); | |
2491 | break; | |
2492 | ||
2493 | case elfcpp::R_SPARC_PC_HM10: | |
2494 | Reloc::pc_hm10(view, object, psymval, addend, address); | |
2495 | break; | |
2496 | ||
2497 | case elfcpp::R_SPARC_LM22: | |
2498 | Reloc::hi22(view, object, psymval, addend); | |
2499 | break; | |
2500 | ||
2501 | case elfcpp::R_SPARC_PC_LM22: | |
2502 | Reloc::pcplt22(view, object, psymval, addend, address); | |
2503 | break; | |
2504 | ||
2505 | case elfcpp::R_SPARC_11: | |
2506 | Reloc::rela32_11(view, object, psymval, addend); | |
2507 | break; | |
2508 | ||
2509 | case elfcpp::R_SPARC_10: | |
2510 | Reloc::rela32_10(view, object, psymval, addend); | |
2511 | break; | |
2512 | ||
2513 | case elfcpp::R_SPARC_7: | |
2514 | Reloc::rela32_7(view, object, psymval, addend); | |
2515 | break; | |
2516 | ||
2517 | case elfcpp::R_SPARC_6: | |
2518 | Reloc::rela32_6(view, object, psymval, addend); | |
2519 | break; | |
2520 | ||
2521 | case elfcpp::R_SPARC_5: | |
2522 | Reloc::rela32_5(view, object, psymval, addend); | |
2523 | break; | |
2524 | ||
2525 | case elfcpp::R_SPARC_HIX22: | |
2526 | Reloc::hix22(view, object, psymval, addend); | |
2527 | break; | |
2528 | ||
2529 | case elfcpp::R_SPARC_LOX10: | |
2530 | Reloc::lox10(view, object, psymval, addend); | |
2531 | break; | |
2532 | ||
2533 | case elfcpp::R_SPARC_H44: | |
2534 | Reloc::h44(view, object, psymval, addend); | |
2535 | break; | |
2536 | ||
2537 | case elfcpp::R_SPARC_M44: | |
2538 | Reloc::m44(view, object, psymval, addend); | |
2539 | break; | |
2540 | ||
2541 | case elfcpp::R_SPARC_L44: | |
2542 | Reloc::l44(view, object, psymval, addend); | |
2543 | break; | |
2544 | ||
2545 | case elfcpp::R_SPARC_TLS_DTPOFF64: | |
2546 | case elfcpp::R_SPARC_UA64: | |
2547 | Reloc::ua64(view, object, psymval, addend); | |
2548 | break; | |
2549 | ||
2550 | case elfcpp::R_SPARC_UA16: | |
2551 | Reloc::ua16(view, object, psymval, addend); | |
2552 | break; | |
2553 | ||
2554 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
2555 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2556 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2557 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2558 | case elfcpp::R_SPARC_TLS_LDM_HI22: | |
2559 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2560 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2561 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2562 | case elfcpp::R_SPARC_TLS_LDO_HIX22: | |
2563 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
2564 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
2565 | case elfcpp::R_SPARC_TLS_IE_HI22: | |
2566 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2567 | case elfcpp::R_SPARC_TLS_IE_LD: | |
2568 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
2569 | case elfcpp::R_SPARC_TLS_LE_HIX22: | |
2570 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
2571 | this->relocate_tls(relinfo, target, relnum, rela, | |
2572 | r_type, gsym, psymval, view, | |
2573 | address, view_size); | |
2574 | break; | |
2575 | ||
2576 | case elfcpp::R_SPARC_COPY: | |
2577 | case elfcpp::R_SPARC_GLOB_DAT: | |
2578 | case elfcpp::R_SPARC_JMP_SLOT: | |
2579 | case elfcpp::R_SPARC_RELATIVE: | |
2580 | // These are outstanding tls relocs, which are unexpected when | |
2581 | // linking. | |
2582 | case elfcpp::R_SPARC_TLS_DTPMOD64: | |
2583 | case elfcpp::R_SPARC_TLS_DTPMOD32: | |
2584 | case elfcpp::R_SPARC_TLS_TPOFF64: | |
2585 | case elfcpp::R_SPARC_TLS_TPOFF32: | |
2586 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
2587 | _("unexpected reloc %u in object file"), | |
2588 | r_type); | |
2589 | break; | |
2590 | ||
2591 | default: | |
2592 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
2593 | _("unsupported reloc %u"), | |
2594 | r_type); | |
2595 | break; | |
2596 | } | |
2597 | ||
2598 | return true; | |
2599 | } | |
2600 | ||
2601 | // Perform a TLS relocation. | |
2602 | ||
2603 | template<int size, bool big_endian> | |
2604 | inline void | |
2605 | Target_sparc<size, big_endian>::Relocate::relocate_tls( | |
2606 | const Relocate_info<size, big_endian>* relinfo, | |
2607 | Target_sparc<size, big_endian>* target, | |
2608 | size_t relnum, | |
2609 | const elfcpp::Rela<size, big_endian>& rela, | |
2610 | unsigned int r_type, | |
2611 | const Sized_symbol<size>* gsym, | |
2612 | const Symbol_value<size>* psymval, | |
2613 | unsigned char* view, | |
2614 | typename elfcpp::Elf_types<size>::Elf_Addr address, | |
2615 | section_size_type) | |
2616 | { | |
2617 | Output_segment* tls_segment = relinfo->layout->tls_segment(); | |
2618 | typedef Sparc_relocate_functions<size, big_endian> Reloc; | |
2619 | const Sized_relobj<size, big_endian>* object = relinfo->object; | |
2620 | typedef typename elfcpp::Swap<32, true>::Valtype Insntype; | |
2621 | ||
2622 | const elfcpp::Elf_Xword addend = rela.get_r_addend(); | |
2623 | typename elfcpp::Elf_types<size>::Elf_Addr value = psymval->value(object, 0); | |
2624 | ||
2625 | const bool is_final = | |
2626 | (gsym == NULL | |
2627 | ? !parameters->options().output_is_position_independent() | |
2628 | : gsym->final_value_is_known()); | |
2629 | const tls::Tls_optimization optimized_type | |
2630 | = optimize_tls_reloc(is_final, r_type); | |
2631 | ||
2632 | switch (r_type) | |
2633 | { | |
2634 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
2635 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2636 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2637 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2638 | if (optimized_type == tls::TLSOPT_TO_LE) | |
2639 | { | |
2640 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
2641 | Insntype val; | |
2642 | ||
2643 | value -= tls_segment->memsz(); | |
2644 | ||
2645 | switch (r_type) | |
2646 | { | |
2647 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
2648 | // TLS_GD_HI22 --> TLS_LE_HIX22 | |
2649 | Reloc::hix22(view, value, addend); | |
2650 | break; | |
2651 | ||
2652 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2653 | // TLS_GD_LO10 --> TLS_LE_LOX10 | |
2654 | Reloc::lox10(view, value, addend); | |
2655 | break; | |
2656 | ||
2657 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2658 | // add %reg1, %reg2, %reg3 --> mov %g7, %reg2, %reg3 | |
2659 | val = elfcpp::Swap<32, true>::readval(wv); | |
2660 | val = (val & ~0x7c000) | 0x1c000; | |
2661 | elfcpp::Swap<32, true>::writeval(wv, val); | |
2662 | break; | |
2663 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2664 | // call __tls_get_addr --> nop | |
2665 | elfcpp::Swap<32, true>::writeval(wv, sparc_nop); | |
2666 | break; | |
2667 | } | |
2668 | break; | |
2669 | } | |
2670 | else | |
2671 | { | |
2672 | unsigned int got_type = (optimized_type == tls::TLSOPT_TO_IE | |
2673 | ? GOT_TYPE_TLS_OFFSET | |
2674 | : GOT_TYPE_TLS_PAIR); | |
2675 | if (gsym != NULL) | |
2676 | { | |
2677 | gold_assert(gsym->has_got_offset(got_type)); | |
2678 | value = gsym->got_offset(got_type); | |
2679 | } | |
2680 | else | |
2681 | { | |
2682 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
2683 | gold_assert(object->local_has_got_offset(r_sym, got_type)); | |
2684 | value = object->local_got_offset(r_sym, got_type); | |
2685 | } | |
2686 | if (optimized_type == tls::TLSOPT_TO_IE) | |
2687 | { | |
2688 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
2689 | Insntype val; | |
2690 | ||
2691 | switch (r_type) | |
2692 | { | |
2693 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
2694 | // TLS_GD_HI22 --> TLS_IE_HI22 | |
2695 | Reloc::hi22(view, value, addend); | |
2696 | break; | |
2697 | ||
2698 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2699 | // TLS_GD_LO10 --> TLS_IE_LO10 | |
2700 | Reloc::lo10(view, value, addend); | |
2701 | break; | |
2702 | ||
2703 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2704 | // add %reg1, %reg2, %reg3 --> ld [%reg1 + %reg2], %reg3 | |
2705 | val = elfcpp::Swap<32, true>::readval(wv); | |
2706 | ||
2707 | if (size == 64) | |
2708 | val |= 0xc0580000; | |
2709 | else | |
2710 | val |= 0xc0000000; | |
2711 | ||
2712 | elfcpp::Swap<32, true>::writeval(wv, val); | |
2713 | break; | |
2714 | ||
2715 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2716 | // The compiler can put the TLS_GD_ADD instruction | |
2717 | // into the delay slot of the call. If so, we need | |
2718 | // to transpose the two instructions so that the | |
2719 | // the new sequence works properly. | |
2720 | // | |
2721 | // The test we use is if the instruction in the | |
2722 | // delay slot is an add with destination register | |
2723 | // equal to %o0 | |
2724 | val = elfcpp::Swap<32, true>::readval(wv + 1); | |
2725 | if ((val & 0x81f80000) == 0x80000000 | |
2726 | && ((val >> 25) & 0x1f) == 0x8) | |
2727 | { | |
2728 | if (size == 64) | |
2729 | val |= 0xc0580000; | |
2730 | else | |
2731 | val |= 0xc0000000; | |
2732 | ||
2733 | elfcpp::Swap<32, true>::writeval(wv, val); | |
2734 | ||
2735 | wv += 1; | |
2736 | this->ignore_gd_add_ = true; | |
2737 | } | |
2738 | ||
2739 | // call __tls_get_addr --> add %g7, %o0, %o0 | |
2740 | elfcpp::Swap<32, true>::writeval(wv, 0x9001c008); | |
2741 | break; | |
2742 | } | |
2743 | break; | |
2744 | } | |
2745 | else if (optimized_type == tls::TLSOPT_NONE) | |
2746 | { | |
2747 | switch (r_type) | |
2748 | { | |
2749 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
2750 | Reloc::hi22(view, value, addend); | |
2751 | break; | |
2752 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2753 | Reloc::lo10(view, value, addend); | |
2754 | break; | |
2755 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2756 | break; | |
2757 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2758 | { | |
2759 | Symbol_value<size> symval; | |
2760 | elfcpp::Elf_Xword value; | |
2761 | Symbol* tsym; | |
2762 | ||
2763 | tsym = target->tls_get_addr_sym_; | |
2764 | gold_assert(tsym); | |
2765 | value = (target->plt_section()->address() + | |
2766 | tsym->plt_offset()); | |
2767 | symval.set_output_value(value); | |
2768 | Reloc::wdisp30(view, object, &symval, addend, address); | |
2769 | } | |
2770 | break; | |
2771 | } | |
2772 | break; | |
2773 | } | |
2774 | } | |
2775 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
2776 | _("unsupported reloc %u"), | |
2777 | r_type); | |
2778 | break; | |
2779 | ||
2780 | case elfcpp::R_SPARC_TLS_LDM_HI22: | |
2781 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2782 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2783 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2784 | if (optimized_type == tls::TLSOPT_TO_LE) | |
2785 | { | |
2786 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
2787 | ||
2788 | switch (r_type) | |
2789 | { | |
2790 | case elfcpp::R_SPARC_TLS_LDM_HI22: | |
2791 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2792 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2793 | elfcpp::Swap<32, true>::writeval(wv, sparc_nop); | |
2794 | break; | |
2795 | ||
2796 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2797 | elfcpp::Swap<32, true>::writeval(wv, sparc_mov_g0_o0); | |
2798 | break; | |
2799 | } | |
2800 | break; | |
2801 | } | |
2802 | else if (optimized_type == tls::TLSOPT_NONE) | |
2803 | { | |
2804 | // Relocate the field with the offset of the GOT entry for | |
2805 | // the module index. | |
2806 | unsigned int got_offset; | |
2807 | ||
2808 | got_offset = target->got_mod_index_entry(NULL, NULL, NULL); | |
2809 | switch (r_type) | |
2810 | { | |
2811 | case elfcpp::R_SPARC_TLS_LDM_HI22: | |
2812 | Reloc::hi22(view, got_offset, addend); | |
2813 | break; | |
2814 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2815 | Reloc::lo10(view, got_offset, addend); | |
2816 | break; | |
2817 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2818 | break; | |
2819 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2820 | { | |
2821 | Symbol_value<size> symval; | |
2822 | elfcpp::Elf_Xword value; | |
2823 | Symbol* tsym; | |
2824 | ||
2825 | tsym = target->tls_get_addr_sym_; | |
2826 | gold_assert(tsym); | |
2827 | value = (target->plt_section()->address() + | |
2828 | tsym->plt_offset()); | |
2829 | symval.set_output_value(value); | |
2830 | Reloc::wdisp30(view, object, &symval, addend, address); | |
2831 | } | |
2832 | break; | |
2833 | } | |
2834 | break; | |
2835 | } | |
2836 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
2837 | _("unsupported reloc %u"), | |
2838 | r_type); | |
2839 | break; | |
2840 | ||
2841 | // These relocs can appear in debugging sections, in which case | |
2842 | // we won't see the TLS_LDM relocs. The local_dynamic_type | |
2843 | // field tells us this. | |
2844 | case elfcpp::R_SPARC_TLS_LDO_HIX22: | |
2845 | if (optimized_type == tls::TLSOPT_TO_LE) | |
2846 | { | |
2847 | value -= tls_segment->memsz(); | |
2848 | Reloc::hix22(view, value, addend); | |
2849 | } | |
2850 | else | |
2851 | Reloc::ldo_hix22(view, value, addend); | |
2852 | break; | |
2853 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
2854 | if (optimized_type == tls::TLSOPT_TO_LE) | |
2855 | { | |
2856 | value -= tls_segment->memsz(); | |
2857 | Reloc::lox10(view, value, addend); | |
2858 | } | |
2859 | else | |
2860 | Reloc::ldo_lox10(view, value, addend); | |
2861 | break; | |
2862 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
2863 | if (optimized_type == tls::TLSOPT_TO_LE) | |
2864 | { | |
2865 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
2866 | Insntype val; | |
2867 | ||
2868 | // add %reg1, %reg2, %reg3 --> add %g7, %reg2, %reg3 | |
2869 | val = elfcpp::Swap<32, true>::readval(wv); | |
2870 | val = (val & ~0x7c000) | 0x1c000; | |
2871 | elfcpp::Swap<32, true>::writeval(wv, val); | |
2872 | } | |
2873 | break; | |
2874 | ||
2875 | // When optimizing IE --> LE, the only relocation that is handled | |
2876 | // differently is R_SPARC_TLS_IE_LD, it is rewritten from | |
2877 | // 'ld{,x} [rs1 + rs2], rd' into 'mov rs2, rd' or simply a NOP is | |
2878 | // rs2 and rd are the same. | |
2879 | case elfcpp::R_SPARC_TLS_IE_LD: | |
2880 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
2881 | if (optimized_type == tls::TLSOPT_TO_LE) | |
2882 | { | |
2883 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
2884 | Insntype val = elfcpp::Swap<32, true>::readval(wv); | |
2885 | Insntype rs2 = val & 0x1f; | |
2886 | Insntype rd = (val >> 25) & 0x1f; | |
2887 | ||
2888 | if (rs2 == rd) | |
2889 | val = sparc_nop; | |
2890 | else | |
2891 | val = sparc_mov | (val & 0x3e00001f); | |
2892 | ||
2893 | elfcpp::Swap<32, true>::writeval(wv, val); | |
2894 | } | |
2895 | break; | |
2896 | ||
2897 | case elfcpp::R_SPARC_TLS_IE_HI22: | |
2898 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2899 | if (optimized_type == tls::TLSOPT_TO_LE) | |
2900 | { | |
2901 | value -= tls_segment->memsz(); | |
2902 | switch (r_type) | |
2903 | { | |
2904 | case elfcpp::R_SPARC_TLS_IE_HI22: | |
2905 | // IE_HI22 --> LE_HIX22 | |
2906 | Reloc::hix22(view, value, addend); | |
2907 | break; | |
2908 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2909 | // IE_LO10 --> LE_LOX10 | |
2910 | Reloc::lox10(view, value, addend); | |
2911 | break; | |
2912 | } | |
2913 | break; | |
2914 | } | |
2915 | else if (optimized_type == tls::TLSOPT_NONE) | |
2916 | { | |
2917 | // Relocate the field with the offset of the GOT entry for | |
2918 | // the tp-relative offset of the symbol. | |
2919 | if (gsym != NULL) | |
2920 | { | |
2921 | gold_assert(gsym->has_got_offset(GOT_TYPE_TLS_OFFSET)); | |
2922 | value = gsym->got_offset(GOT_TYPE_TLS_OFFSET); | |
2923 | } | |
2924 | else | |
2925 | { | |
2926 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
2927 | gold_assert(object->local_has_got_offset(r_sym, | |
2928 | GOT_TYPE_TLS_OFFSET)); | |
2929 | value = object->local_got_offset(r_sym, | |
2930 | GOT_TYPE_TLS_OFFSET); | |
2931 | } | |
2932 | switch (r_type) | |
2933 | { | |
2934 | case elfcpp::R_SPARC_TLS_IE_HI22: | |
2935 | Reloc::hi22(view, value, addend); | |
2936 | break; | |
2937 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2938 | Reloc::lo10(view, value, addend); | |
2939 | break; | |
2940 | } | |
2941 | break; | |
2942 | } | |
2943 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
2944 | _("unsupported reloc %u"), | |
2945 | r_type); | |
2946 | break; | |
2947 | ||
2948 | case elfcpp::R_SPARC_TLS_LE_HIX22: | |
2949 | // If we're creating a shared library, a dynamic relocation will | |
2950 | // have been created for this location, so do not apply it now. | |
2951 | if (!parameters->options().shared()) | |
2952 | { | |
2953 | value -= tls_segment->memsz(); | |
2954 | Reloc::hix22(view, value, addend); | |
2955 | } | |
2956 | break; | |
2957 | ||
2958 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
2959 | // If we're creating a shared library, a dynamic relocation will | |
2960 | // have been created for this location, so do not apply it now. | |
2961 | if (!parameters->options().shared()) | |
2962 | { | |
2963 | value -= tls_segment->memsz(); | |
2964 | Reloc::lox10(view, value, addend); | |
2965 | } | |
2966 | break; | |
2967 | } | |
2968 | } | |
2969 | ||
2970 | // Relocate section data. | |
2971 | ||
2972 | template<int size, bool big_endian> | |
2973 | void | |
2974 | Target_sparc<size, big_endian>::relocate_section( | |
2975 | const Relocate_info<size, big_endian>* relinfo, | |
2976 | unsigned int sh_type, | |
2977 | const unsigned char* prelocs, | |
2978 | size_t reloc_count, | |
2979 | Output_section* output_section, | |
2980 | bool needs_special_offset_handling, | |
2981 | unsigned char* view, | |
2982 | typename elfcpp::Elf_types<size>::Elf_Addr address, | |
2983 | section_size_type view_size) | |
2984 | { | |
2985 | typedef Target_sparc<size, big_endian> Sparc; | |
2986 | typedef typename Target_sparc<size, big_endian>::Relocate Sparc_relocate; | |
2987 | ||
2988 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
2989 | ||
2990 | gold::relocate_section<size, big_endian, Sparc, elfcpp::SHT_RELA, | |
2991 | Sparc_relocate>( | |
2992 | relinfo, | |
2993 | this, | |
2994 | prelocs, | |
2995 | reloc_count, | |
2996 | output_section, | |
2997 | needs_special_offset_handling, | |
2998 | view, | |
2999 | address, | |
3000 | view_size); | |
3001 | } | |
3002 | ||
3003 | // Return the size of a relocation while scanning during a relocatable | |
3004 | // link. | |
3005 | ||
3006 | template<int size, bool big_endian> | |
3007 | unsigned int | |
3008 | Target_sparc<size, big_endian>::Relocatable_size_for_reloc::get_size_for_reloc( | |
3009 | unsigned int, | |
3010 | Relobj*) | |
3011 | { | |
3012 | // We are always SHT_RELA, so we should never get here. | |
3013 | gold_unreachable(); | |
3014 | return 0; | |
3015 | } | |
3016 | ||
3017 | // Scan the relocs during a relocatable link. | |
3018 | ||
3019 | template<int size, bool big_endian> | |
3020 | void | |
3021 | Target_sparc<size, big_endian>::scan_relocatable_relocs( | |
3022 | const General_options& options, | |
3023 | Symbol_table* symtab, | |
3024 | Layout* layout, | |
3025 | Sized_relobj<size, big_endian>* object, | |
3026 | unsigned int data_shndx, | |
3027 | unsigned int sh_type, | |
3028 | const unsigned char* prelocs, | |
3029 | size_t reloc_count, | |
3030 | Output_section* output_section, | |
3031 | bool needs_special_offset_handling, | |
3032 | size_t local_symbol_count, | |
3033 | const unsigned char* plocal_symbols, | |
3034 | Relocatable_relocs* rr) | |
3035 | { | |
3036 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
3037 | ||
3038 | typedef gold::Default_scan_relocatable_relocs<elfcpp::SHT_RELA, | |
3039 | Relocatable_size_for_reloc> Scan_relocatable_relocs; | |
3040 | ||
3041 | gold::scan_relocatable_relocs<size, big_endian, elfcpp::SHT_RELA, | |
3042 | Scan_relocatable_relocs>( | |
3043 | options, | |
3044 | symtab, | |
3045 | layout, | |
3046 | object, | |
3047 | data_shndx, | |
3048 | prelocs, | |
3049 | reloc_count, | |
3050 | output_section, | |
3051 | needs_special_offset_handling, | |
3052 | local_symbol_count, | |
3053 | plocal_symbols, | |
3054 | rr); | |
3055 | } | |
3056 | ||
3057 | // Relocate a section during a relocatable link. | |
3058 | ||
3059 | template<int size, bool big_endian> | |
3060 | void | |
3061 | Target_sparc<size, big_endian>::relocate_for_relocatable( | |
3062 | const Relocate_info<size, big_endian>* relinfo, | |
3063 | unsigned int sh_type, | |
3064 | const unsigned char* prelocs, | |
3065 | size_t reloc_count, | |
3066 | Output_section* output_section, | |
3067 | off_t offset_in_output_section, | |
3068 | const Relocatable_relocs* rr, | |
3069 | unsigned char* view, | |
3070 | typename elfcpp::Elf_types<size>::Elf_Addr view_address, | |
3071 | section_size_type view_size, | |
3072 | unsigned char* reloc_view, | |
3073 | section_size_type reloc_view_size) | |
3074 | { | |
3075 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
3076 | ||
3077 | gold::relocate_for_relocatable<size, big_endian, elfcpp::SHT_RELA>( | |
3078 | relinfo, | |
3079 | prelocs, | |
3080 | reloc_count, | |
3081 | output_section, | |
3082 | offset_in_output_section, | |
3083 | rr, | |
3084 | view, | |
3085 | view_address, | |
3086 | view_size, | |
3087 | reloc_view, | |
3088 | reloc_view_size); | |
3089 | } | |
3090 | ||
3091 | // Return the value to use for a dynamic which requires special | |
3092 | // treatment. This is how we support equality comparisons of function | |
3093 | // pointers across shared library boundaries, as described in the | |
3094 | // processor specific ABI supplement. | |
3095 | ||
3096 | template<int size, bool big_endian> | |
3097 | uint64_t | |
3098 | Target_sparc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const | |
3099 | { | |
3100 | gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset()); | |
3101 | return this->plt_section()->address() + gsym->plt_offset(); | |
3102 | } | |
3103 | ||
3104 | // The selector for sparc object files. | |
3105 | ||
3106 | template<int size, bool big_endian> | |
3107 | class Target_selector_sparc : public Target_selector | |
3108 | { | |
3109 | public: | |
3110 | Target_selector_sparc() | |
3111 | : Target_selector(elfcpp::EM_NONE, size, big_endian, | |
3112 | (size == 64 ? "elf64-sparc" : "elf32-sparc")) | |
3113 | { } | |
3114 | ||
3115 | Target* instantiated_target_; | |
3116 | ||
3117 | Target* do_recognize(int machine, int, int) | |
3118 | { | |
3119 | switch (size) | |
3120 | { | |
3121 | case 64: | |
3122 | if (machine != elfcpp::EM_SPARCV9) | |
3123 | return NULL; | |
3124 | break; | |
3125 | ||
3126 | case 32: | |
3127 | if (machine != elfcpp::EM_SPARC | |
3128 | && machine != elfcpp::EM_SPARC32PLUS) | |
3129 | return NULL; | |
3130 | break; | |
3131 | ||
3132 | default: | |
3133 | return NULL; | |
3134 | } | |
3135 | ||
3136 | return do_instantiate_target(); | |
3137 | } | |
3138 | ||
3139 | Target* do_instantiate_target() | |
3140 | { | |
3141 | if (this->instantiated_target_ == NULL) | |
3142 | this->instantiated_target_ = new Target_sparc<size, big_endian>(); | |
3143 | return this->instantiated_target_; | |
3144 | } | |
3145 | }; | |
3146 | ||
3147 | Target_selector_sparc<32, true> target_selector_sparc32; | |
3148 | Target_selector_sparc<64, true> target_selector_sparc64; | |
3149 | ||
3150 | } // End anonymous namespace. |