Commit | Line | Data |
---|---|---|
f5314dd5 DM |
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" | |
12c0daef | 37 | #include "copy-relocs.h" |
f5314dd5 DM |
38 | #include "target.h" |
39 | #include "target-reloc.h" | |
40 | #include "target-select.h" | |
41 | #include "tls.h" | |
42 | #include "errors.h" | |
43 | ||
44 | namespace | |
45 | { | |
46 | ||
47 | using namespace gold; | |
48 | ||
49 | template<int size, bool big_endian> | |
50 | class Output_data_plt_sparc; | |
51 | ||
52 | template<int size, bool big_endian> | |
53 | class Target_sparc : public Sized_target<size, big_endian> | |
54 | { | |
55 | public: | |
56 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section; | |
57 | ||
58 | Target_sparc() | |
59 | : Sized_target<size, big_endian>(&sparc_info), | |
60 | got_(NULL), plt_(NULL), rela_dyn_(NULL), | |
12c0daef ILT |
61 | copy_relocs_(elfcpp::R_SPARC_COPY), dynbss_(NULL), |
62 | got_mod_index_offset_(-1U), tls_get_addr_sym_(NULL) | |
f5314dd5 DM |
63 | { |
64 | } | |
65 | ||
66 | // Scan the relocations to look for symbol adjustments. | |
67 | void | |
68 | scan_relocs(const General_options& options, | |
69 | Symbol_table* symtab, | |
70 | Layout* layout, | |
71 | Sized_relobj<size, big_endian>* object, | |
72 | unsigned int data_shndx, | |
73 | unsigned int sh_type, | |
74 | const unsigned char* prelocs, | |
75 | size_t reloc_count, | |
76 | Output_section* output_section, | |
77 | bool needs_special_offset_handling, | |
78 | size_t local_symbol_count, | |
79 | const unsigned char* plocal_symbols); | |
80 | // Finalize the sections. | |
81 | void | |
82 | do_finalize_sections(Layout*); | |
83 | ||
84 | // Return the value to use for a dynamic which requires special | |
85 | // treatment. | |
86 | uint64_t | |
87 | do_dynsym_value(const Symbol*) const; | |
88 | ||
89 | // Relocate a section. | |
90 | void | |
91 | relocate_section(const Relocate_info<size, big_endian>*, | |
92 | unsigned int sh_type, | |
93 | const unsigned char* prelocs, | |
94 | size_t reloc_count, | |
95 | Output_section* output_section, | |
96 | bool needs_special_offset_handling, | |
97 | unsigned char* view, | |
98 | typename elfcpp::Elf_types<size>::Elf_Addr view_address, | |
99 | section_size_type view_size); | |
100 | ||
101 | // Scan the relocs during a relocatable link. | |
102 | void | |
103 | scan_relocatable_relocs(const General_options& options, | |
104 | Symbol_table* symtab, | |
105 | Layout* layout, | |
106 | Sized_relobj<size, big_endian>* object, | |
107 | unsigned int data_shndx, | |
108 | unsigned int sh_type, | |
109 | const unsigned char* prelocs, | |
110 | size_t reloc_count, | |
111 | Output_section* output_section, | |
112 | bool needs_special_offset_handling, | |
113 | size_t local_symbol_count, | |
114 | const unsigned char* plocal_symbols, | |
115 | Relocatable_relocs*); | |
116 | ||
117 | // Relocate a section during a relocatable link. | |
118 | void | |
119 | relocate_for_relocatable(const Relocate_info<size, big_endian>*, | |
120 | unsigned int sh_type, | |
121 | const unsigned char* prelocs, | |
122 | size_t reloc_count, | |
123 | Output_section* output_section, | |
124 | off_t offset_in_output_section, | |
125 | const Relocatable_relocs*, | |
126 | unsigned char* view, | |
127 | typename elfcpp::Elf_types<size>::Elf_Addr view_address, | |
128 | section_size_type view_size, | |
129 | unsigned char* reloc_view, | |
130 | section_size_type reloc_view_size); | |
131 | // Return whether SYM is defined by the ABI. | |
132 | bool | |
9c2d0ef9 | 133 | do_is_defined_by_abi(const Symbol* sym) const |
f5314dd5 DM |
134 | { |
135 | // XXX Really need to support this better... | |
136 | if (sym->type() == elfcpp::STT_SPARC_REGISTER) | |
137 | return 1; | |
138 | ||
139 | return strcmp(sym->name(), "___tls_get_addr") == 0; | |
140 | } | |
141 | ||
142 | // Return the size of the GOT section. | |
143 | section_size_type | |
144 | got_size() | |
145 | { | |
146 | gold_assert(this->got_ != NULL); | |
147 | return this->got_->data_size(); | |
148 | } | |
149 | ||
150 | private: | |
151 | ||
152 | // The class which scans relocations. | |
32b769e1 | 153 | class Scan |
f5314dd5 | 154 | { |
32b769e1 DM |
155 | public: |
156 | Scan() | |
157 | : issued_non_pic_error_(false) | |
158 | { } | |
159 | ||
f5314dd5 DM |
160 | inline void |
161 | local(const General_options& options, Symbol_table* symtab, | |
162 | Layout* layout, Target_sparc* target, | |
163 | Sized_relobj<size, big_endian>* object, | |
164 | unsigned int data_shndx, | |
165 | Output_section* output_section, | |
166 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
167 | const elfcpp::Sym<size, big_endian>& lsym); | |
168 | ||
169 | inline void | |
170 | global(const General_options& options, Symbol_table* symtab, | |
171 | Layout* layout, Target_sparc* target, | |
172 | Sized_relobj<size, big_endian>* object, | |
173 | unsigned int data_shndx, | |
174 | Output_section* output_section, | |
175 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
176 | Symbol* gsym); | |
177 | ||
32b769e1 | 178 | private: |
f5314dd5 DM |
179 | static void |
180 | unsupported_reloc_local(Sized_relobj<size, big_endian>*, | |
181 | unsigned int r_type); | |
182 | ||
183 | static void | |
184 | unsupported_reloc_global(Sized_relobj<size, big_endian>*, | |
185 | unsigned int r_type, Symbol*); | |
186 | ||
187 | static void | |
188 | generate_tls_call(Symbol_table* symtab, Layout* layout, | |
189 | Target_sparc* target); | |
32b769e1 DM |
190 | |
191 | void | |
192 | check_non_pic(Relobj*, unsigned int r_type); | |
193 | ||
194 | // Whether we have issued an error about a non-PIC compilation. | |
195 | bool issued_non_pic_error_; | |
f5314dd5 DM |
196 | }; |
197 | ||
198 | // The class which implements relocation. | |
199 | class Relocate | |
200 | { | |
201 | public: | |
202 | Relocate() | |
203 | : ignore_gd_add_(false) | |
204 | { } | |
205 | ||
206 | ~Relocate() | |
207 | { | |
208 | if (this->ignore_gd_add_) | |
209 | { | |
210 | // FIXME: This needs to specify the location somehow. | |
211 | gold_error(_("missing expected TLS relocation")); | |
212 | } | |
213 | } | |
214 | ||
215 | // Do a relocation. Return false if the caller should not issue | |
216 | // any warnings about this relocation. | |
217 | inline bool | |
218 | relocate(const Relocate_info<size, big_endian>*, Target_sparc*, | |
219 | size_t relnum, const elfcpp::Rela<size, big_endian>&, | |
220 | unsigned int r_type, const Sized_symbol<size>*, | |
221 | const Symbol_value<size>*, | |
222 | unsigned char*, | |
223 | typename elfcpp::Elf_types<size>::Elf_Addr, | |
224 | section_size_type); | |
225 | ||
226 | private: | |
227 | // Do a TLS relocation. | |
228 | inline void | |
229 | relocate_tls(const Relocate_info<size, big_endian>*, Target_sparc* target, | |
230 | size_t relnum, const elfcpp::Rela<size, big_endian>&, | |
231 | unsigned int r_type, const Sized_symbol<size>*, | |
232 | const Symbol_value<size>*, | |
233 | unsigned char*, | |
234 | typename elfcpp::Elf_types<size>::Elf_Addr, | |
235 | section_size_type); | |
236 | ||
237 | // Ignore the next relocation which should be R_SPARC_TLS_GD_ADD | |
238 | bool ignore_gd_add_; | |
239 | }; | |
240 | ||
241 | // A class which returns the size required for a relocation type, | |
242 | // used while scanning relocs during a relocatable link. | |
243 | class Relocatable_size_for_reloc | |
244 | { | |
245 | public: | |
246 | unsigned int | |
247 | get_size_for_reloc(unsigned int, Relobj*); | |
248 | }; | |
249 | ||
250 | // Get the GOT section, creating it if necessary. | |
251 | Output_data_got<size, big_endian>* | |
252 | got_section(Symbol_table*, Layout*); | |
253 | ||
254 | // Create a PLT entry for a global symbol. | |
255 | void | |
256 | make_plt_entry(Symbol_table*, Layout*, Symbol*); | |
257 | ||
258 | // Create a GOT entry for the TLS module index. | |
259 | unsigned int | |
260 | got_mod_index_entry(Symbol_table* symtab, Layout* layout, | |
261 | Sized_relobj<size, big_endian>* object); | |
262 | ||
263 | // Return the gsym for "__tls_get_addr". Cache if not already | |
264 | // cached. | |
265 | Symbol* | |
266 | tls_get_addr_sym(Symbol_table* symtab) | |
267 | { | |
268 | if (!this->tls_get_addr_sym_) | |
269 | this->tls_get_addr_sym_ = symtab->lookup("__tls_get_addr", NULL); | |
270 | gold_assert(this->tls_get_addr_sym_); | |
271 | return this->tls_get_addr_sym_; | |
272 | } | |
273 | ||
274 | // Get the PLT section. | |
275 | const Output_data_plt_sparc<size, big_endian>* | |
276 | plt_section() const | |
277 | { | |
278 | gold_assert(this->plt_ != NULL); | |
279 | return this->plt_; | |
280 | } | |
281 | ||
282 | // Get the dynamic reloc section, creating it if necessary. | |
283 | Reloc_section* | |
284 | rela_dyn_section(Layout*); | |
285 | ||
286 | // Return true if the symbol may need a COPY relocation. | |
287 | // References from an executable object to non-function symbols | |
288 | // defined in a dynamic object may need a COPY relocation. | |
289 | bool | |
290 | may_need_copy_reloc(Symbol* gsym) | |
291 | { | |
292 | return (!parameters->options().shared() | |
293 | && gsym->is_from_dynobj() | |
294 | && gsym->type() != elfcpp::STT_FUNC); | |
295 | } | |
296 | ||
297 | // Copy a relocation against a global symbol. | |
298 | void | |
ef9beddf ILT |
299 | copy_reloc(Symbol_table* symtab, Layout* layout, |
300 | Sized_relobj<size, big_endian>* object, | |
12c0daef ILT |
301 | unsigned int shndx, Output_section* output_section, |
302 | Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc) | |
303 | { | |
304 | this->copy_relocs_.copy_reloc(symtab, layout, | |
305 | symtab->get_sized_symbol<size>(sym), | |
306 | object, shndx, output_section, | |
307 | reloc, this->rela_dyn_section(layout)); | |
308 | } | |
f5314dd5 DM |
309 | |
310 | // Information about this specific target which we pass to the | |
311 | // general Target structure. | |
312 | static Target::Target_info sparc_info; | |
313 | ||
314 | // The types of GOT entries needed for this platform. | |
315 | enum Got_type | |
316 | { | |
317 | GOT_TYPE_STANDARD = 0, // GOT entry for a regular symbol | |
318 | GOT_TYPE_TLS_OFFSET = 1, // GOT entry for TLS offset | |
319 | GOT_TYPE_TLS_PAIR = 2, // GOT entry for TLS module/offset pair | |
320 | }; | |
321 | ||
322 | // The GOT section. | |
323 | Output_data_got<size, big_endian>* got_; | |
324 | // The PLT section. | |
325 | Output_data_plt_sparc<size, big_endian>* plt_; | |
326 | // The dynamic reloc section. | |
327 | Reloc_section* rela_dyn_; | |
328 | // Relocs saved to avoid a COPY reloc. | |
12c0daef | 329 | Copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_; |
f5314dd5 DM |
330 | // Space for variables copied with a COPY reloc. |
331 | Output_data_space* dynbss_; | |
332 | // Offset of the GOT entry for the TLS module index; | |
333 | unsigned int got_mod_index_offset_; | |
334 | // Cached pointer to __tls_get_addr symbol | |
335 | Symbol* tls_get_addr_sym_; | |
336 | }; | |
337 | ||
338 | template<> | |
339 | Target::Target_info Target_sparc<32, true>::sparc_info = | |
340 | { | |
341 | 32, // size | |
342 | true, // is_big_endian | |
343 | elfcpp::EM_SPARC, // machine_code | |
344 | false, // has_make_symbol | |
345 | false, // has_resolve | |
346 | false, // has_code_fill | |
347 | true, // is_default_stack_executable | |
348 | '\0', // wrap_char | |
349 | "/usr/lib/ld.so.1", // dynamic_linker | |
350 | 0x00010000, // default_text_segment_address | |
351 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
352 | 8 * 1024 // common_pagesize (overridable by -z common-page-size) | |
353 | }; | |
354 | ||
355 | template<> | |
356 | Target::Target_info Target_sparc<64, true>::sparc_info = | |
357 | { | |
358 | 64, // size | |
359 | true, // is_big_endian | |
360 | elfcpp::EM_SPARCV9, // machine_code | |
361 | false, // has_make_symbol | |
362 | false, // has_resolve | |
363 | false, // has_code_fill | |
364 | true, // is_default_stack_executable | |
365 | '\0', // wrap_char | |
366 | "/usr/lib/sparcv9/ld.so.1", // dynamic_linker | |
367 | 0x100000, // default_text_segment_address | |
368 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
369 | 8 * 1024 // common_pagesize (overridable by -z common-page-size) | |
370 | }; | |
371 | ||
372 | // We have to take care here, even when operating in little-endian | |
373 | // mode, sparc instructions are still big endian. | |
374 | template<int size, bool big_endian> | |
375 | class Sparc_relocate_functions | |
376 | { | |
377 | private: | |
378 | // Do a simple relocation with the addend in the relocation. | |
379 | template<int valsize> | |
380 | static inline void | |
381 | rela(unsigned char* view, | |
382 | unsigned int right_shift, | |
383 | typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask, | |
384 | typename elfcpp::Swap<size, big_endian>::Valtype value, | |
385 | typename elfcpp::Swap<size, big_endian>::Valtype addend) | |
386 | { | |
387 | typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype; | |
388 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
389 | Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv); | |
390 | Valtype reloc = ((value + addend) >> right_shift); | |
391 | ||
392 | val &= ~dst_mask; | |
393 | reloc &= dst_mask; | |
394 | ||
395 | elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc); | |
396 | } | |
397 | ||
398 | // Do a simple relocation using a symbol value with the addend in | |
399 | // the relocation. | |
400 | template<int valsize> | |
401 | static inline void | |
402 | rela(unsigned char* view, | |
403 | unsigned int right_shift, | |
404 | typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask, | |
405 | const Sized_relobj<size, big_endian>* object, | |
406 | const Symbol_value<size>* psymval, | |
407 | typename elfcpp::Swap<valsize, big_endian>::Valtype addend) | |
408 | { | |
409 | typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype; | |
410 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
411 | Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv); | |
412 | Valtype reloc = (psymval->value(object, addend) >> right_shift); | |
413 | ||
414 | val &= ~dst_mask; | |
415 | reloc &= dst_mask; | |
416 | ||
417 | elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc); | |
418 | } | |
419 | ||
420 | // Do a simple relocation using a symbol value with the addend in | |
421 | // the relocation, unaligned. | |
422 | template<int valsize> | |
423 | static inline void | |
424 | rela_ua(unsigned char* view, | |
425 | unsigned int right_shift, elfcpp::Elf_Xword dst_mask, | |
426 | const Sized_relobj<size, big_endian>* object, | |
427 | const Symbol_value<size>* psymval, | |
428 | typename elfcpp::Swap<size, big_endian>::Valtype addend) | |
429 | { | |
430 | typedef typename elfcpp::Swap_unaligned<valsize, | |
431 | big_endian>::Valtype Valtype; | |
432 | unsigned char* wv = view; | |
433 | Valtype val = elfcpp::Swap_unaligned<valsize, big_endian>::readval(wv); | |
434 | Valtype reloc = (psymval->value(object, addend) >> right_shift); | |
435 | ||
436 | val &= ~dst_mask; | |
437 | reloc &= dst_mask; | |
438 | ||
439 | elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, val | reloc); | |
440 | } | |
441 | ||
442 | // Do a simple PC relative relocation with a Symbol_value with the | |
443 | // addend in the relocation. | |
444 | template<int valsize> | |
445 | static inline void | |
446 | pcrela(unsigned char* view, | |
447 | unsigned int right_shift, | |
448 | typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask, | |
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<valsize, big_endian>::Valtype Valtype; | |
455 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
456 | Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv); | |
457 | Valtype reloc = ((psymval->value(object, addend) - address) | |
458 | >> right_shift); | |
459 | ||
460 | val &= ~dst_mask; | |
461 | reloc &= dst_mask; | |
462 | ||
463 | elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc); | |
464 | } | |
465 | ||
466 | template<int valsize> | |
467 | static inline void | |
468 | pcrela_unaligned(unsigned char* view, | |
469 | const Sized_relobj<size, big_endian>* object, | |
470 | const Symbol_value<size>* psymval, | |
471 | typename elfcpp::Swap<size, big_endian>::Valtype addend, | |
472 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
473 | { | |
474 | typedef typename elfcpp::Swap_unaligned<valsize, | |
475 | big_endian>::Valtype Valtype; | |
476 | unsigned char* wv = view; | |
477 | Valtype reloc = (psymval->value(object, addend) - address); | |
478 | ||
479 | elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, reloc); | |
480 | } | |
481 | ||
482 | typedef Sparc_relocate_functions<size, big_endian> This; | |
483 | typedef Sparc_relocate_functions<size, true> This_insn; | |
484 | ||
485 | public: | |
486 | // R_SPARC_WDISP30: (Symbol + Addend - Address) >> 2 | |
487 | static inline void | |
488 | wdisp30(unsigned char* view, | |
489 | const Sized_relobj<size, big_endian>* object, | |
490 | const Symbol_value<size>* psymval, | |
491 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
492 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
493 | { | |
494 | This_insn::template pcrela<32>(view, 2, 0x3fffffff, object, | |
495 | psymval, addend, address); | |
496 | } | |
497 | ||
498 | // R_SPARC_WDISP22: (Symbol + Addend - Address) >> 2 | |
499 | static inline void | |
500 | wdisp22(unsigned char* view, | |
501 | const Sized_relobj<size, big_endian>* object, | |
502 | const Symbol_value<size>* psymval, | |
503 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
504 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
505 | { | |
506 | This_insn::template pcrela<32>(view, 2, 0x003fffff, object, | |
507 | psymval, addend, address); | |
508 | } | |
509 | ||
510 | // R_SPARC_WDISP19: (Symbol + Addend - Address) >> 2 | |
511 | static inline void | |
512 | wdisp19(unsigned char* view, | |
513 | const Sized_relobj<size, big_endian>* object, | |
514 | const Symbol_value<size>* psymval, | |
515 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
516 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
517 | { | |
518 | This_insn::template pcrela<32>(view, 2, 0x0007ffff, object, | |
519 | psymval, addend, address); | |
520 | } | |
521 | ||
522 | // R_SPARC_WDISP16: (Symbol + Addend - Address) >> 2 | |
523 | static inline void | |
524 | wdisp16(unsigned char* view, | |
525 | const Sized_relobj<size, big_endian>* object, | |
526 | const Symbol_value<size>* psymval, | |
527 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
528 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
529 | { | |
530 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
531 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
532 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
533 | Valtype reloc = ((psymval->value(object, addend) - address) | |
534 | >> 2); | |
535 | ||
536 | // The relocation value is split between the low 14 bits, | |
537 | // and bits 20-21. | |
538 | val &= ~((0x3 << 20) | 0x3fff); | |
539 | reloc = (((reloc & 0xc000) << (20 - 14)) | |
540 | | (reloc & 0x3ffff)); | |
541 | ||
542 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
543 | } | |
544 | ||
545 | // R_SPARC_PC22: (Symbol + Addend - Address) >> 10 | |
546 | static inline void | |
547 | pc22(unsigned char* view, | |
548 | const Sized_relobj<size, big_endian>* object, | |
549 | const Symbol_value<size>* psymval, | |
550 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
551 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
552 | { | |
553 | This_insn::template pcrela<32>(view, 10, 0x003fffff, object, | |
554 | psymval, addend, address); | |
555 | } | |
556 | ||
557 | // R_SPARC_PC10: (Symbol + Addend - Address) & 0x3ff | |
558 | static inline void | |
559 | pc10(unsigned char* view, | |
560 | const Sized_relobj<size, big_endian>* object, | |
561 | const Symbol_value<size>* psymval, | |
562 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
563 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
564 | { | |
565 | This_insn::template pcrela<32>(view, 0, 0x000003ff, object, | |
566 | psymval, addend, address); | |
567 | } | |
568 | ||
569 | // R_SPARC_HI22: (Symbol + Addend) >> 10 | |
570 | static inline void | |
571 | hi22(unsigned char* view, | |
572 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
573 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
574 | { | |
575 | This_insn::template rela<32>(view, 10, 0x003fffff, value, addend); | |
576 | } | |
577 | ||
578 | // R_SPARC_HI22: (Symbol + Addend) >> 10 | |
579 | static inline void | |
580 | hi22(unsigned char* view, | |
581 | const Sized_relobj<size, big_endian>* object, | |
582 | const Symbol_value<size>* psymval, | |
583 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
584 | { | |
585 | This_insn::template rela<32>(view, 10, 0x003fffff, object, psymval, addend); | |
586 | } | |
587 | ||
588 | // R_SPARC_PCPLT22: (Symbol + Addend - Address) >> 10 | |
589 | static inline void | |
590 | pcplt22(unsigned char* view, | |
591 | const Sized_relobj<size, big_endian>* object, | |
592 | const Symbol_value<size>* psymval, | |
593 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
594 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
595 | { | |
596 | This_insn::template pcrela<32>(view, 10, 0x003fffff, object, | |
597 | psymval, addend, address); | |
598 | } | |
599 | ||
600 | // R_SPARC_LO10: (Symbol + Addend) & 0x3ff | |
601 | static inline void | |
602 | lo10(unsigned char* view, | |
603 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
604 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
605 | { | |
606 | This_insn::template rela<32>(view, 0, 0x000003ff, value, addend); | |
607 | } | |
608 | ||
609 | // R_SPARC_LO10: (Symbol + Addend) & 0x3ff | |
610 | static inline void | |
611 | lo10(unsigned char* view, | |
612 | const Sized_relobj<size, big_endian>* object, | |
613 | const Symbol_value<size>* psymval, | |
614 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
615 | { | |
616 | This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend); | |
617 | } | |
618 | ||
619 | // R_SPARC_LO10: (Symbol + Addend) & 0x3ff | |
620 | static inline void | |
621 | lo10(unsigned char* view, | |
622 | const Sized_relobj<size, big_endian>* object, | |
623 | const Symbol_value<size>* psymval, | |
624 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
625 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
626 | { | |
627 | This_insn::template pcrela<32>(view, 0, 0x000003ff, object, | |
628 | psymval, addend, address); | |
629 | } | |
630 | ||
631 | // R_SPARC_OLO10: ((Symbol + Addend) & 0x3ff) + Addend2 | |
632 | static inline void | |
633 | olo10(unsigned char* view, | |
634 | const Sized_relobj<size, big_endian>* object, | |
635 | const Symbol_value<size>* psymval, | |
636 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
637 | typename elfcpp::Elf_types<size>::Elf_Addr addend2) | |
638 | { | |
639 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
640 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
641 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
642 | Valtype reloc = psymval->value(object, addend); | |
643 | ||
644 | val &= ~0x1fff; | |
645 | reloc &= 0x3ff; | |
646 | reloc += addend2; | |
647 | reloc &= 0x1fff; | |
648 | ||
649 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
650 | } | |
651 | ||
652 | // R_SPARC_22: (Symbol + Addend) | |
653 | static inline void | |
654 | rela32_22(unsigned char* view, | |
655 | const Sized_relobj<size, big_endian>* object, | |
656 | const Symbol_value<size>* psymval, | |
657 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
658 | { | |
659 | This_insn::template rela<32>(view, 0, 0x003fffff, object, psymval, addend); | |
660 | } | |
661 | ||
662 | // R_SPARC_13: (Symbol + Addend) | |
663 | static inline void | |
664 | rela32_13(unsigned char* view, | |
665 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
666 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
667 | { | |
668 | This_insn::template rela<32>(view, 0, 0x00001fff, value, addend); | |
669 | } | |
670 | ||
671 | // R_SPARC_13: (Symbol + Addend) | |
672 | static inline void | |
673 | rela32_13(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_insn::template rela<32>(view, 0, 0x00001fff, object, psymval, addend); | |
679 | } | |
680 | ||
681 | // R_SPARC_UA16: (Symbol + Addend) | |
682 | static inline void | |
683 | ua16(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<16>(view, 0, 0xffff, object, psymval, addend); | |
689 | } | |
690 | ||
691 | // R_SPARC_UA32: (Symbol + Addend) | |
692 | static inline void | |
693 | ua32(unsigned char* view, | |
694 | const Sized_relobj<size, big_endian>* object, | |
695 | const Symbol_value<size>* psymval, | |
696 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
697 | { | |
698 | This::template rela_ua<32>(view, 0, 0xffffffff, object, psymval, addend); | |
699 | } | |
700 | ||
701 | // R_SPARC_UA64: (Symbol + Addend) | |
702 | static inline void | |
703 | ua64(unsigned char* view, | |
704 | const Sized_relobj<size, big_endian>* object, | |
705 | const Symbol_value<size>* psymval, | |
706 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
707 | { | |
708 | This::template rela_ua<64>(view, 0, ~(elfcpp::Elf_Xword) 0, | |
709 | object, psymval, addend); | |
710 | } | |
711 | ||
712 | // R_SPARC_DISP8: (Symbol + Addend - Address) | |
713 | static inline void | |
714 | disp8(unsigned char* view, | |
715 | const Sized_relobj<size, big_endian>* object, | |
716 | const Symbol_value<size>* psymval, | |
717 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
718 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
719 | { | |
720 | This::template pcrela_unaligned<8>(view, object, psymval, | |
721 | addend, address); | |
722 | } | |
723 | ||
724 | // R_SPARC_DISP16: (Symbol + Addend - Address) | |
725 | static inline void | |
726 | disp16(unsigned char* view, | |
727 | const Sized_relobj<size, big_endian>* object, | |
728 | const Symbol_value<size>* psymval, | |
729 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
730 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
731 | { | |
732 | This::template pcrela_unaligned<16>(view, object, psymval, | |
733 | addend, address); | |
734 | } | |
735 | ||
736 | // R_SPARC_DISP32: (Symbol + Addend - Address) | |
737 | static inline void | |
738 | disp32(unsigned char* view, | |
739 | const Sized_relobj<size, big_endian>* object, | |
740 | const Symbol_value<size>* psymval, | |
741 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
742 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
743 | { | |
744 | This::template pcrela_unaligned<32>(view, object, psymval, | |
745 | addend, address); | |
746 | } | |
747 | ||
748 | // R_SPARC_DISP64: (Symbol + Addend - Address) | |
749 | static inline void | |
750 | disp64(unsigned char* view, | |
751 | const Sized_relobj<size, big_endian>* object, | |
752 | const Symbol_value<size>* psymval, | |
753 | elfcpp::Elf_Xword addend, | |
754 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
755 | { | |
756 | This::template pcrela_unaligned<64>(view, object, psymval, | |
757 | addend, address); | |
758 | } | |
759 | ||
760 | // R_SPARC_H44: (Symbol + Addend) >> 22 | |
761 | static inline void | |
762 | h44(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, 22, 0x003fffff, object, psymval, addend); | |
768 | } | |
769 | ||
770 | // R_SPARC_M44: ((Symbol + Addend) >> 12) & 0x3ff | |
771 | static inline void | |
772 | m44(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, 12, 0x000003ff, object, psymval, addend); | |
778 | } | |
779 | ||
780 | // R_SPARC_L44: (Symbol + Addend) & 0xfff | |
781 | static inline void | |
782 | l44(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 | { | |
787 | This_insn::template rela<32>(view, 0, 0x00000fff, object, psymval, addend); | |
788 | } | |
789 | ||
790 | // R_SPARC_HH22: (Symbol + Addend) >> 42 | |
791 | static inline void | |
792 | hh22(unsigned char* view, | |
793 | const Sized_relobj<size, big_endian>* object, | |
794 | const Symbol_value<size>* psymval, | |
795 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
796 | { | |
797 | This_insn::template rela<32>(view, 42, 0x003fffff, object, psymval, addend); | |
798 | } | |
799 | ||
800 | // R_SPARC_PC_HH22: (Symbol + Addend - Address) >> 42 | |
801 | static inline void | |
802 | pc_hh22(unsigned char* view, | |
803 | const Sized_relobj<size, big_endian>* object, | |
804 | const Symbol_value<size>* psymval, | |
805 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
806 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
807 | { | |
808 | This_insn::template pcrela<32>(view, 42, 0x003fffff, object, | |
809 | psymval, addend, address); | |
810 | } | |
811 | ||
812 | // R_SPARC_HM10: ((Symbol + Addend) >> 32) & 0x3ff | |
813 | static inline void | |
814 | hm10(unsigned char* view, | |
815 | const Sized_relobj<size, big_endian>* object, | |
816 | const Symbol_value<size>* psymval, | |
817 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
818 | { | |
819 | This_insn::template rela<32>(view, 32, 0x000003ff, object, psymval, addend); | |
820 | } | |
821 | ||
822 | // R_SPARC_PC_HM10: ((Symbol + Addend - Address) >> 32) & 0x3ff | |
823 | static inline void | |
824 | pc_hm10(unsigned char* view, | |
825 | const Sized_relobj<size, big_endian>* object, | |
826 | const Symbol_value<size>* psymval, | |
827 | typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
828 | typename elfcpp::Elf_types<size>::Elf_Addr address) | |
829 | { | |
830 | This_insn::template pcrela<32>(view, 32, 0x000003ff, object, | |
831 | psymval, addend, address); | |
832 | } | |
833 | ||
834 | // R_SPARC_11: (Symbol + Addend) | |
835 | static inline void | |
836 | rela32_11(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, 0x000007ff, object, psymval, addend); | |
842 | } | |
843 | ||
844 | // R_SPARC_10: (Symbol + Addend) | |
845 | static inline void | |
846 | rela32_10(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, 0x000003ff, object, psymval, addend); | |
852 | } | |
853 | ||
854 | // R_SPARC_7: (Symbol + Addend) | |
855 | static inline void | |
856 | rela32_7(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, 0x0000007f, object, psymval, addend); | |
862 | } | |
863 | ||
864 | // R_SPARC_6: (Symbol + Addend) | |
865 | static inline void | |
866 | rela32_6(unsigned char* view, | |
867 | const Sized_relobj<size, big_endian>* object, | |
868 | const Symbol_value<size>* psymval, | |
869 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
870 | { | |
871 | This_insn::template rela<32>(view, 0, 0x0000003f, object, psymval, addend); | |
872 | } | |
873 | ||
874 | // R_SPARC_5: (Symbol + Addend) | |
875 | static inline void | |
876 | rela32_5(unsigned char* view, | |
877 | const Sized_relobj<size, big_endian>* object, | |
878 | const Symbol_value<size>* psymval, | |
879 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
880 | { | |
881 | This_insn::template rela<32>(view, 0, 0x0000001f, object, psymval, addend); | |
882 | } | |
883 | ||
884 | // R_SPARC_TLS_LDO_HIX22: @dtpoff(Symbol + Addend) >> 10 | |
885 | static inline void | |
886 | ldo_hix22(unsigned char* view, | |
887 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
888 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
889 | { | |
890 | This_insn::hi22(view, value, addend); | |
891 | } | |
892 | ||
893 | // R_SPARC_TLS_LDO_LOX10: @dtpoff(Symbol + Addend) & 0x3ff | |
894 | static inline void | |
895 | ldo_lox10(unsigned char* view, | |
896 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
897 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
898 | { | |
899 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
900 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
901 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
902 | Valtype reloc = (value + addend); | |
903 | ||
904 | val &= ~0x1fff; | |
905 | reloc &= 0x3ff; | |
906 | ||
907 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
908 | } | |
909 | ||
910 | // R_SPARC_TLS_LE_HIX22: (@tpoff(Symbol + Addend) ^ 0xffffffffffffffff) >> 10 | |
911 | static inline void | |
912 | hix22(unsigned char* view, | |
913 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
914 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
915 | { | |
916 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
917 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
918 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
919 | Valtype reloc = (value + addend); | |
920 | ||
921 | val &= ~0x3fffff; | |
922 | ||
923 | reloc ^= ~(Valtype)0; | |
924 | reloc >>= 10; | |
925 | ||
926 | reloc &= 0x3fffff; | |
927 | ||
928 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
929 | } | |
930 | ||
931 | // R_SPARC_HIX22: ((Symbol + Addend) ^ 0xffffffffffffffff) >> 10 | |
932 | static inline void | |
933 | hix22(unsigned char* view, | |
934 | const Sized_relobj<size, big_endian>* object, | |
935 | const Symbol_value<size>* psymval, | |
936 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
937 | { | |
938 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
939 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
940 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
941 | Valtype reloc = psymval->value(object, addend); | |
942 | ||
943 | val &= ~0x3fffff; | |
944 | ||
945 | reloc ^= ~(Valtype)0; | |
946 | reloc >>= 10; | |
947 | ||
948 | reloc &= 0x3fffff; | |
949 | ||
950 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
951 | } | |
952 | ||
953 | ||
954 | // R_SPARC_TLS_LE_LOX10: (@tpoff(Symbol + Addend) & 0x3ff) | 0x1c00 | |
955 | static inline void | |
956 | lox10(unsigned char* view, | |
957 | typename elfcpp::Elf_types<size>::Elf_Addr value, | |
958 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
959 | { | |
960 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
961 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
962 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
963 | Valtype reloc = (value + addend); | |
964 | ||
965 | val &= ~0x1fff; | |
966 | reloc &= 0x3ff; | |
967 | reloc |= 0x1c00; | |
968 | ||
969 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
970 | } | |
971 | ||
972 | // R_SPARC_LOX10: ((Symbol + Addend) & 0x3ff) | 0x1c00 | |
973 | static inline void | |
974 | lox10(unsigned char* view, | |
975 | const Sized_relobj<size, big_endian>* object, | |
976 | const Symbol_value<size>* psymval, | |
977 | typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
978 | { | |
979 | typedef typename elfcpp::Swap<32, true>::Valtype Valtype; | |
980 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
981 | Valtype val = elfcpp::Swap<32, true>::readval(wv); | |
982 | Valtype reloc = psymval->value(object, addend); | |
983 | ||
984 | val &= ~0x1fff; | |
985 | reloc &= 0x3ff; | |
986 | reloc |= 0x1c00; | |
987 | ||
988 | elfcpp::Swap<32, true>::writeval(wv, val | reloc); | |
989 | } | |
990 | }; | |
991 | ||
992 | // Get the GOT section, creating it if necessary. | |
993 | ||
994 | template<int size, bool big_endian> | |
995 | Output_data_got<size, big_endian>* | |
996 | Target_sparc<size, big_endian>::got_section(Symbol_table* symtab, | |
997 | Layout* layout) | |
998 | { | |
999 | if (this->got_ == NULL) | |
1000 | { | |
1001 | gold_assert(symtab != NULL && layout != NULL); | |
1002 | ||
1003 | this->got_ = new Output_data_got<size, big_endian>(); | |
1004 | ||
9f1d377b ILT |
1005 | Output_section* os; |
1006 | os = layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS, | |
1007 | (elfcpp::SHF_ALLOC | |
1008 | | elfcpp::SHF_WRITE), | |
1009 | this->got_); | |
1010 | os->set_is_relro(); | |
f5314dd5 DM |
1011 | |
1012 | // Define _GLOBAL_OFFSET_TABLE_ at the start of the .got section. | |
1013 | symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
1014 | this->got_, | |
1015 | 0, 0, elfcpp::STT_OBJECT, | |
1016 | elfcpp::STB_LOCAL, | |
1017 | elfcpp::STV_HIDDEN, 0, | |
1018 | false, false); | |
1019 | } | |
1020 | ||
1021 | return this->got_; | |
1022 | } | |
1023 | ||
1024 | // Get the dynamic reloc section, creating it if necessary. | |
1025 | ||
1026 | template<int size, bool big_endian> | |
1027 | typename Target_sparc<size, big_endian>::Reloc_section* | |
1028 | Target_sparc<size, big_endian>::rela_dyn_section(Layout* layout) | |
1029 | { | |
1030 | if (this->rela_dyn_ == NULL) | |
1031 | { | |
1032 | gold_assert(layout != NULL); | |
d98bc257 | 1033 | this->rela_dyn_ = new Reloc_section(parameters->options().combreloc()); |
f5314dd5 DM |
1034 | layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA, |
1035 | elfcpp::SHF_ALLOC, this->rela_dyn_); | |
1036 | } | |
1037 | return this->rela_dyn_; | |
1038 | } | |
1039 | ||
1040 | // A class to handle the PLT data. | |
1041 | ||
1042 | template<int size, bool big_endian> | |
1043 | class Output_data_plt_sparc : public Output_section_data | |
1044 | { | |
1045 | public: | |
1046 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
1047 | size, big_endian> Reloc_section; | |
1048 | ||
1049 | Output_data_plt_sparc(Layout*); | |
1050 | ||
1051 | // Add an entry to the PLT. | |
1052 | void add_entry(Symbol* gsym); | |
1053 | ||
1054 | // Return the .rela.plt section data. | |
1055 | const Reloc_section* rel_plt() const | |
1056 | { | |
1057 | return this->rel_; | |
1058 | } | |
1059 | ||
1060 | protected: | |
1061 | void do_adjust_output_section(Output_section* os); | |
1062 | ||
7d9e3d98 ILT |
1063 | // Write to a map file. |
1064 | void | |
1065 | do_print_to_mapfile(Mapfile* mapfile) const | |
1066 | { mapfile->print_output_data(this, _("** PLT")); } | |
1067 | ||
f5314dd5 DM |
1068 | private: |
1069 | // The size of an entry in the PLT. | |
1070 | static const int base_plt_entry_size = (size == 32 ? 12 : 32); | |
1071 | ||
1072 | static const unsigned int plt_entries_per_block = 160; | |
1073 | static const unsigned int plt_insn_chunk_size = 24; | |
1074 | static const unsigned int plt_pointer_chunk_size = 8; | |
1075 | static const unsigned int plt_block_size = | |
1076 | (plt_entries_per_block | |
1077 | * (plt_insn_chunk_size + plt_pointer_chunk_size)); | |
1078 | ||
1079 | // Set the final size. | |
1080 | void | |
1081 | set_final_data_size() | |
1082 | { | |
1083 | unsigned int full_count = this->count_ + 4; | |
1084 | unsigned int extra = (size == 32 ? 4 : 0); | |
1085 | ||
1086 | if (size == 32 || full_count < 32768) | |
1087 | this->set_data_size((full_count * base_plt_entry_size) + extra); | |
1088 | else | |
1089 | { | |
1090 | unsigned int ext_cnt = full_count - 32768; | |
1091 | ||
1092 | this->set_data_size((32768 * base_plt_entry_size) | |
1093 | + (ext_cnt | |
1094 | * (plt_insn_chunk_size | |
1095 | + plt_pointer_chunk_size))); | |
1096 | } | |
1097 | } | |
1098 | ||
1099 | // Write out the PLT data. | |
1100 | void | |
1101 | do_write(Output_file*); | |
1102 | ||
1103 | // The reloc section. | |
1104 | Reloc_section* rel_; | |
1105 | // The number of PLT entries. | |
1106 | unsigned int count_; | |
1107 | }; | |
1108 | ||
4f2a9edd ILT |
1109 | // Define the constants as required by C++ standard. |
1110 | ||
1111 | template<int size, bool big_endian> | |
1112 | const int Output_data_plt_sparc<size, big_endian>::base_plt_entry_size; | |
1113 | ||
1114 | template<int size, bool big_endian> | |
1115 | const unsigned int | |
1116 | Output_data_plt_sparc<size, big_endian>::plt_entries_per_block; | |
1117 | ||
1118 | template<int size, bool big_endian> | |
1119 | const unsigned int Output_data_plt_sparc<size, big_endian>::plt_insn_chunk_size; | |
1120 | ||
1121 | template<int size, bool big_endian> | |
1122 | const unsigned int | |
1123 | Output_data_plt_sparc<size, big_endian>::plt_pointer_chunk_size; | |
1124 | ||
1125 | template<int size, bool big_endian> | |
1126 | const unsigned int Output_data_plt_sparc<size, big_endian>::plt_block_size; | |
1127 | ||
f5314dd5 DM |
1128 | // Create the PLT section. The ordinary .got section is an argument, |
1129 | // since we need to refer to the start. | |
1130 | ||
1131 | template<int size, bool big_endian> | |
1132 | Output_data_plt_sparc<size, big_endian>::Output_data_plt_sparc(Layout* layout) | |
1133 | : Output_section_data(size == 32 ? 4 : 8), count_(0) | |
1134 | { | |
d98bc257 | 1135 | this->rel_ = new Reloc_section(false); |
f5314dd5 DM |
1136 | layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA, |
1137 | elfcpp::SHF_ALLOC, this->rel_); | |
1138 | } | |
1139 | ||
1140 | template<int size, bool big_endian> | |
1141 | void | |
1142 | Output_data_plt_sparc<size, big_endian>::do_adjust_output_section(Output_section* os) | |
1143 | { | |
1144 | os->set_entsize(0); | |
1145 | } | |
1146 | ||
1147 | // Add an entry to the PLT. | |
1148 | ||
1149 | template<int size, bool big_endian> | |
1150 | void | |
1151 | Output_data_plt_sparc<size, big_endian>::add_entry(Symbol* gsym) | |
1152 | { | |
1153 | gold_assert(!gsym->has_plt_offset()); | |
1154 | ||
1155 | unsigned int index = this->count_ + 4; | |
1156 | section_offset_type plt_offset; | |
1157 | ||
1158 | if (size == 32 || index < 32768) | |
1159 | plt_offset = index * base_plt_entry_size; | |
1160 | else | |
1161 | { | |
1162 | unsigned int ext_index = index - 32768; | |
1163 | ||
1164 | plt_offset = (32768 * base_plt_entry_size) | |
1165 | + ((ext_index / plt_entries_per_block) | |
1166 | * plt_block_size) | |
1167 | + ((ext_index % plt_entries_per_block) | |
1168 | * plt_insn_chunk_size); | |
1169 | } | |
1170 | ||
1171 | gsym->set_plt_offset(plt_offset); | |
1172 | ||
1173 | ++this->count_; | |
1174 | ||
1175 | // Every PLT entry needs a reloc. | |
1176 | gsym->set_needs_dynsym_entry(); | |
1177 | this->rel_->add_global(gsym, elfcpp::R_SPARC_JMP_SLOT, this, | |
1178 | plt_offset, 0); | |
1179 | ||
1180 | // Note that we don't need to save the symbol. The contents of the | |
1181 | // PLT are independent of which symbols are used. The symbols only | |
1182 | // appear in the relocations. | |
1183 | } | |
1184 | ||
1185 | static const unsigned int sparc_nop = 0x01000000; | |
1186 | static const unsigned int sparc_sethi_g1 = 0x03000000; | |
1187 | static const unsigned int sparc_branch_always = 0x30800000; | |
1188 | static const unsigned int sparc_branch_always_pt = 0x30680000; | |
1189 | static const unsigned int sparc_mov = 0x80100000; | |
1190 | static const unsigned int sparc_mov_g0_o0 = 0x90100000; | |
1191 | static const unsigned int sparc_mov_o7_g5 = 0x8a10000f; | |
1192 | static const unsigned int sparc_call_plus_8 = 0x40000002; | |
1193 | static const unsigned int sparc_ldx_o7_imm_g1 = 0xc25be000; | |
1194 | static const unsigned int sparc_jmpl_o7_g1_g1 = 0x83c3c001; | |
1195 | static const unsigned int sparc_mov_g5_o7 = 0x9e100005; | |
1196 | ||
1197 | // Write out the PLT. | |
1198 | ||
1199 | template<int size, bool big_endian> | |
1200 | void | |
1201 | Output_data_plt_sparc<size, big_endian>::do_write(Output_file* of) | |
1202 | { | |
1203 | const off_t offset = this->offset(); | |
1204 | const section_size_type oview_size = | |
1205 | convert_to_section_size_type(this->data_size()); | |
1206 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
1207 | unsigned char* pov = oview; | |
1208 | ||
1209 | memset(pov, 0, base_plt_entry_size * 4); | |
1210 | pov += base_plt_entry_size * 4; | |
1211 | ||
1212 | unsigned int plt_offset = base_plt_entry_size * 4; | |
1213 | const unsigned int count = this->count_; | |
1214 | ||
1215 | if (size == 64) | |
1216 | { | |
1217 | unsigned int limit; | |
1218 | ||
1219 | limit = (count > 32768 ? 32768 : count); | |
1220 | ||
1221 | for (unsigned int i = 0; i < limit; ++i) | |
1222 | { | |
1223 | elfcpp::Swap<32, true>::writeval(pov + 0x00, | |
1224 | sparc_sethi_g1 + plt_offset); | |
1225 | elfcpp::Swap<32, true>::writeval(pov + 0x04, | |
1226 | sparc_branch_always_pt + | |
1227 | (((base_plt_entry_size - | |
1228 | (plt_offset + 4)) >> 2) & | |
1229 | 0x7ffff)); | |
1230 | elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop); | |
1231 | elfcpp::Swap<32, true>::writeval(pov + 0x0c, sparc_nop); | |
1232 | elfcpp::Swap<32, true>::writeval(pov + 0x10, sparc_nop); | |
1233 | elfcpp::Swap<32, true>::writeval(pov + 0x14, sparc_nop); | |
1234 | elfcpp::Swap<32, true>::writeval(pov + 0x18, sparc_nop); | |
1235 | elfcpp::Swap<32, true>::writeval(pov + 0x1c, sparc_nop); | |
1236 | ||
1237 | pov += base_plt_entry_size; | |
1238 | plt_offset += base_plt_entry_size; | |
1239 | } | |
1240 | ||
1241 | if (count > 32768) | |
1242 | { | |
1243 | unsigned int ext_cnt = count - 32768; | |
1244 | unsigned int blks = ext_cnt / plt_entries_per_block; | |
1245 | ||
1246 | for (unsigned int i = 0; i < blks; ++i) | |
1247 | { | |
1248 | unsigned int data_off = (plt_entries_per_block | |
1249 | * plt_insn_chunk_size) - 4; | |
1250 | ||
1251 | for (unsigned int j = 0; j < plt_entries_per_block; ++j) | |
1252 | { | |
1253 | elfcpp::Swap<32, true>::writeval(pov + 0x00, | |
1254 | sparc_mov_o7_g5); | |
1255 | elfcpp::Swap<32, true>::writeval(pov + 0x04, | |
1256 | sparc_call_plus_8); | |
1257 | elfcpp::Swap<32, true>::writeval(pov + 0x08, | |
1258 | sparc_nop); | |
1259 | elfcpp::Swap<32, true>::writeval(pov + 0x0c, | |
1260 | sparc_ldx_o7_imm_g1 + | |
1261 | (data_off & 0x1fff)); | |
1262 | elfcpp::Swap<32, true>::writeval(pov + 0x10, | |
1263 | sparc_jmpl_o7_g1_g1); | |
1264 | elfcpp::Swap<32, true>::writeval(pov + 0x14, | |
1265 | sparc_mov_g5_o7); | |
1266 | ||
1267 | elfcpp::Swap<64, big_endian>::writeval( | |
1268 | pov + 0x4 + data_off, | |
1269 | (elfcpp::Elf_Xword) (oview - (pov + 0x04))); | |
1270 | ||
1271 | pov += plt_insn_chunk_size; | |
1272 | data_off -= 16; | |
1273 | } | |
1274 | } | |
1275 | ||
1276 | unsigned int sub_blk_cnt = ext_cnt % plt_entries_per_block; | |
1277 | for (unsigned int i = 0; i < sub_blk_cnt; ++i) | |
1278 | { | |
1279 | unsigned int data_off = (sub_blk_cnt | |
1280 | * plt_insn_chunk_size) - 4; | |
1281 | ||
1282 | for (unsigned int j = 0; j < plt_entries_per_block; ++j) | |
1283 | { | |
1284 | elfcpp::Swap<32, true>::writeval(pov + 0x00, | |
1285 | sparc_mov_o7_g5); | |
1286 | elfcpp::Swap<32, true>::writeval(pov + 0x04, | |
1287 | sparc_call_plus_8); | |
1288 | elfcpp::Swap<32, true>::writeval(pov + 0x08, | |
1289 | sparc_nop); | |
1290 | elfcpp::Swap<32, true>::writeval(pov + 0x0c, | |
1291 | sparc_ldx_o7_imm_g1 + | |
1292 | (data_off & 0x1fff)); | |
1293 | elfcpp::Swap<32, true>::writeval(pov + 0x10, | |
1294 | sparc_jmpl_o7_g1_g1); | |
1295 | elfcpp::Swap<32, true>::writeval(pov + 0x14, | |
1296 | sparc_mov_g5_o7); | |
1297 | ||
1298 | elfcpp::Swap<64, big_endian>::writeval( | |
1299 | pov + 0x4 + data_off, | |
1300 | (elfcpp::Elf_Xword) (oview - (pov + 0x04))); | |
1301 | ||
1302 | pov += plt_insn_chunk_size; | |
1303 | data_off -= 16; | |
1304 | } | |
1305 | } | |
1306 | } | |
1307 | } | |
1308 | else | |
1309 | { | |
1310 | for (unsigned int i = 0; i < count; ++i) | |
1311 | { | |
1312 | elfcpp::Swap<32, true>::writeval(pov + 0x00, | |
1313 | sparc_sethi_g1 + plt_offset); | |
1314 | elfcpp::Swap<32, true>::writeval(pov + 0x04, | |
1315 | sparc_branch_always + | |
1316 | (((- (plt_offset + 4)) >> 2) & | |
1317 | 0x003fffff)); | |
1318 | elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop); | |
1319 | ||
1320 | pov += base_plt_entry_size; | |
1321 | plt_offset += base_plt_entry_size; | |
1322 | } | |
1323 | ||
1324 | elfcpp::Swap<32, true>::writeval(pov, sparc_nop); | |
1325 | pov += 4; | |
1326 | } | |
1327 | ||
1328 | gold_assert(static_cast<section_size_type>(pov - oview) == oview_size); | |
1329 | ||
1330 | of->write_output_view(offset, oview_size, oview); | |
1331 | } | |
1332 | ||
1333 | // Create a PLT entry for a global symbol. | |
1334 | ||
1335 | template<int size, bool big_endian> | |
1336 | void | |
1337 | Target_sparc<size, big_endian>::make_plt_entry(Symbol_table* symtab, | |
1338 | Layout* layout, | |
1339 | Symbol* gsym) | |
1340 | { | |
1341 | if (gsym->has_plt_offset()) | |
1342 | return; | |
1343 | ||
1344 | if (this->plt_ == NULL) | |
1345 | { | |
1346 | // Create the GOT sections first. | |
1347 | this->got_section(symtab, layout); | |
1348 | ||
1349 | this->plt_ = new Output_data_plt_sparc<size, big_endian>(layout); | |
1350 | layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS, | |
1351 | (elfcpp::SHF_ALLOC | |
1352 | | elfcpp::SHF_EXECINSTR | |
1353 | | elfcpp::SHF_WRITE), | |
1354 | this->plt_); | |
1355 | ||
1356 | // Define _PROCEDURE_LINKAGE_TABLE_ at the start of the .plt section. | |
1357 | symtab->define_in_output_data("_PROCEDURE_LINKAGE_TABLE_", NULL, | |
1358 | this->plt_, | |
1359 | 0, 0, elfcpp::STT_OBJECT, | |
1360 | elfcpp::STB_LOCAL, | |
1361 | elfcpp::STV_HIDDEN, 0, | |
1362 | false, false); | |
1363 | } | |
1364 | ||
1365 | this->plt_->add_entry(gsym); | |
1366 | } | |
1367 | ||
1368 | // Create a GOT entry for the TLS module index. | |
1369 | ||
1370 | template<int size, bool big_endian> | |
1371 | unsigned int | |
1372 | Target_sparc<size, big_endian>::got_mod_index_entry(Symbol_table* symtab, | |
1373 | Layout* layout, | |
1374 | Sized_relobj<size, big_endian>* object) | |
1375 | { | |
1376 | if (this->got_mod_index_offset_ == -1U) | |
1377 | { | |
1378 | gold_assert(symtab != NULL && layout != NULL && object != NULL); | |
1379 | Reloc_section* rela_dyn = this->rela_dyn_section(layout); | |
1380 | Output_data_got<size, big_endian>* got; | |
1381 | unsigned int got_offset; | |
1382 | ||
1383 | got = this->got_section(symtab, layout); | |
1384 | got_offset = got->add_constant(0); | |
1385 | rela_dyn->add_local(object, 0, | |
1386 | (size == 64 ? | |
1387 | elfcpp::R_SPARC_TLS_DTPMOD64 : | |
1388 | elfcpp::R_SPARC_TLS_DTPMOD32), got, | |
1389 | got_offset, 0); | |
1390 | got->add_constant(0); | |
1391 | this->got_mod_index_offset_ = got_offset; | |
1392 | } | |
1393 | return this->got_mod_index_offset_; | |
1394 | } | |
1395 | ||
f5314dd5 DM |
1396 | // Optimize the TLS relocation type based on what we know about the |
1397 | // symbol. IS_FINAL is true if the final address of this symbol is | |
1398 | // known at link time. | |
1399 | ||
1400 | static tls::Tls_optimization | |
1401 | optimize_tls_reloc(bool is_final, int r_type) | |
1402 | { | |
1403 | // If we are generating a shared library, then we can't do anything | |
1404 | // in the linker. | |
1405 | if (parameters->options().shared()) | |
1406 | return tls::TLSOPT_NONE; | |
1407 | ||
1408 | switch (r_type) | |
1409 | { | |
1410 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
1411 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
1412 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
1413 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
1414 | // These are General-Dynamic which permits fully general TLS | |
1415 | // access. Since we know that we are generating an executable, | |
1416 | // we can convert this to Initial-Exec. If we also know that | |
1417 | // this is a local symbol, we can further switch to Local-Exec. | |
1418 | if (is_final) | |
1419 | return tls::TLSOPT_TO_LE; | |
1420 | return tls::TLSOPT_TO_IE; | |
1421 | ||
1422 | case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic | |
1423 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
1424 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
1425 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
1426 | // This is Local-Dynamic, which refers to a local symbol in the | |
1427 | // dynamic TLS block. Since we know that we generating an | |
1428 | // executable, we can switch to Local-Exec. | |
1429 | return tls::TLSOPT_TO_LE; | |
1430 | ||
1431 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
1432 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
1433 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
1434 | // Another type of Local-Dynamic relocation. | |
1435 | return tls::TLSOPT_TO_LE; | |
1436 | ||
1437 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
1438 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
1439 | case elfcpp::R_SPARC_TLS_IE_LD: | |
1440 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
1441 | // These are Initial-Exec relocs which get the thread offset | |
1442 | // from the GOT. If we know that we are linking against the | |
1443 | // local symbol, we can switch to Local-Exec, which links the | |
1444 | // thread offset into the instruction. | |
1445 | if (is_final) | |
1446 | return tls::TLSOPT_TO_LE; | |
1447 | return tls::TLSOPT_NONE; | |
1448 | ||
1449 | case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec | |
1450 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
1451 | // When we already have Local-Exec, there is nothing further we | |
1452 | // can do. | |
1453 | return tls::TLSOPT_NONE; | |
1454 | ||
1455 | default: | |
1456 | gold_unreachable(); | |
1457 | } | |
1458 | } | |
1459 | ||
1460 | // Generate a PLT entry slot for a call to __tls_get_addr | |
1461 | template<int size, bool big_endian> | |
1462 | void | |
1463 | Target_sparc<size, big_endian>::Scan::generate_tls_call(Symbol_table* symtab, | |
1464 | Layout* layout, | |
1465 | Target_sparc<size, big_endian>* target) | |
1466 | { | |
1467 | Symbol* gsym = target->tls_get_addr_sym(symtab); | |
1468 | ||
1469 | target->make_plt_entry(symtab, layout, gsym); | |
1470 | } | |
1471 | ||
1472 | // Report an unsupported relocation against a local symbol. | |
1473 | ||
1474 | template<int size, bool big_endian> | |
1475 | void | |
1476 | Target_sparc<size, big_endian>::Scan::unsupported_reloc_local( | |
1477 | Sized_relobj<size, big_endian>* object, | |
1478 | unsigned int r_type) | |
1479 | { | |
1480 | gold_error(_("%s: unsupported reloc %u against local symbol"), | |
1481 | object->name().c_str(), r_type); | |
1482 | } | |
1483 | ||
32b769e1 DM |
1484 | // We are about to emit a dynamic relocation of type R_TYPE. If the |
1485 | // dynamic linker does not support it, issue an error. | |
1486 | ||
1487 | template<int size, bool big_endian> | |
1488 | void | |
1489 | Target_sparc<size, big_endian>::Scan::check_non_pic(Relobj* object, unsigned int r_type) | |
1490 | { | |
1491 | gold_assert(r_type != elfcpp::R_SPARC_NONE); | |
1492 | ||
1493 | if (size == 64) | |
1494 | { | |
1495 | switch (r_type) | |
1496 | { | |
1497 | // These are the relocation types supported by glibc for sparc 64-bit. | |
1498 | case elfcpp::R_SPARC_RELATIVE: | |
1499 | case elfcpp::R_SPARC_COPY: | |
1500 | case elfcpp::R_SPARC_64: | |
1501 | case elfcpp::R_SPARC_GLOB_DAT: | |
1502 | case elfcpp::R_SPARC_JMP_SLOT: | |
1503 | case elfcpp::R_SPARC_TLS_DTPMOD64: | |
1504 | case elfcpp::R_SPARC_TLS_DTPOFF64: | |
1505 | case elfcpp::R_SPARC_TLS_TPOFF64: | |
1506 | case elfcpp::R_SPARC_TLS_LE_HIX22: | |
1507 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
1508 | case elfcpp::R_SPARC_8: | |
1509 | case elfcpp::R_SPARC_16: | |
1510 | case elfcpp::R_SPARC_DISP8: | |
1511 | case elfcpp::R_SPARC_DISP16: | |
1512 | case elfcpp::R_SPARC_DISP32: | |
1513 | case elfcpp::R_SPARC_WDISP30: | |
1514 | case elfcpp::R_SPARC_LO10: | |
1515 | case elfcpp::R_SPARC_HI22: | |
1516 | case elfcpp::R_SPARC_OLO10: | |
1517 | case elfcpp::R_SPARC_H44: | |
1518 | case elfcpp::R_SPARC_M44: | |
1519 | case elfcpp::R_SPARC_L44: | |
1520 | case elfcpp::R_SPARC_HH22: | |
1521 | case elfcpp::R_SPARC_HM10: | |
1522 | case elfcpp::R_SPARC_LM22: | |
1523 | case elfcpp::R_SPARC_UA16: | |
1524 | case elfcpp::R_SPARC_UA32: | |
1525 | case elfcpp::R_SPARC_UA64: | |
1526 | return; | |
1527 | ||
1528 | default: | |
1529 | break; | |
1530 | } | |
1531 | } | |
1532 | else | |
1533 | { | |
1534 | switch (r_type) | |
1535 | { | |
1536 | // These are the relocation types supported by glibc for sparc 32-bit. | |
1537 | case elfcpp::R_SPARC_RELATIVE: | |
1538 | case elfcpp::R_SPARC_COPY: | |
1539 | case elfcpp::R_SPARC_GLOB_DAT: | |
1540 | case elfcpp::R_SPARC_32: | |
1541 | case elfcpp::R_SPARC_JMP_SLOT: | |
1542 | case elfcpp::R_SPARC_TLS_DTPMOD32: | |
1543 | case elfcpp::R_SPARC_TLS_DTPOFF32: | |
1544 | case elfcpp::R_SPARC_TLS_TPOFF32: | |
1545 | case elfcpp::R_SPARC_TLS_LE_HIX22: | |
1546 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
1547 | case elfcpp::R_SPARC_8: | |
1548 | case elfcpp::R_SPARC_16: | |
1549 | case elfcpp::R_SPARC_DISP8: | |
1550 | case elfcpp::R_SPARC_DISP16: | |
1551 | case elfcpp::R_SPARC_DISP32: | |
1552 | case elfcpp::R_SPARC_LO10: | |
1553 | case elfcpp::R_SPARC_WDISP30: | |
1554 | case elfcpp::R_SPARC_HI22: | |
1555 | case elfcpp::R_SPARC_UA16: | |
1556 | case elfcpp::R_SPARC_UA32: | |
1557 | return; | |
1558 | ||
1559 | default: | |
1560 | break; | |
1561 | } | |
1562 | } | |
1563 | ||
1564 | // This prevents us from issuing more than one error per reloc | |
1565 | // section. But we can still wind up issuing more than one | |
1566 | // error per object file. | |
1567 | if (this->issued_non_pic_error_) | |
1568 | return; | |
1569 | object->error(_("requires unsupported dynamic reloc; " | |
1570 | "recompile with -fPIC")); | |
1571 | this->issued_non_pic_error_ = true; | |
1572 | return; | |
1573 | } | |
1574 | ||
f5314dd5 DM |
1575 | // Scan a relocation for a local symbol. |
1576 | ||
1577 | template<int size, bool big_endian> | |
1578 | inline void | |
1579 | Target_sparc<size, big_endian>::Scan::local( | |
1580 | const General_options&, | |
1581 | Symbol_table* symtab, | |
1582 | Layout* layout, | |
1583 | Target_sparc<size, big_endian>* target, | |
1584 | Sized_relobj<size, big_endian>* object, | |
1585 | unsigned int data_shndx, | |
1586 | Output_section* output_section, | |
1587 | const elfcpp::Rela<size, big_endian>& reloc, | |
1588 | unsigned int r_type, | |
1589 | const elfcpp::Sym<size, big_endian>& lsym) | |
1590 | { | |
1591 | unsigned int orig_r_type = r_type; | |
1592 | ||
1593 | r_type &= 0xff; | |
1594 | switch (r_type) | |
1595 | { | |
1596 | case elfcpp::R_SPARC_NONE: | |
1597 | case elfcpp::R_SPARC_REGISTER: | |
1598 | case elfcpp::R_SPARC_GNU_VTINHERIT: | |
1599 | case elfcpp::R_SPARC_GNU_VTENTRY: | |
1600 | break; | |
1601 | ||
1602 | case elfcpp::R_SPARC_64: | |
1603 | case elfcpp::R_SPARC_32: | |
1604 | // If building a shared library (or a position-independent | |
1605 | // executable), we need to create a dynamic relocation for | |
1606 | // this location. The relocation applied at link time will | |
1607 | // apply the link-time value, so we flag the location with | |
1608 | // an R_SPARC_RELATIVE relocation so the dynamic loader can | |
1609 | // relocate it easily. | |
1610 | if (parameters->options().output_is_position_independent()) | |
1611 | { | |
1612 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
1613 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
1614 | rela_dyn->add_local_relative(object, r_sym, elfcpp::R_SPARC_RELATIVE, | |
1615 | output_section, data_shndx, | |
1616 | reloc.get_r_offset(), | |
1617 | reloc.get_r_addend()); | |
1618 | } | |
1619 | break; | |
1620 | ||
1621 | case elfcpp::R_SPARC_HIX22: | |
1622 | case elfcpp::R_SPARC_LOX10: | |
1623 | case elfcpp::R_SPARC_H44: | |
1624 | case elfcpp::R_SPARC_M44: | |
1625 | case elfcpp::R_SPARC_L44: | |
1626 | case elfcpp::R_SPARC_HH22: | |
1627 | case elfcpp::R_SPARC_HM10: | |
1628 | case elfcpp::R_SPARC_LM22: | |
1629 | case elfcpp::R_SPARC_UA64: | |
1630 | case elfcpp::R_SPARC_UA32: | |
1631 | case elfcpp::R_SPARC_UA16: | |
1632 | case elfcpp::R_SPARC_HI22: | |
1633 | case elfcpp::R_SPARC_LO10: | |
1634 | case elfcpp::R_SPARC_OLO10: | |
1635 | case elfcpp::R_SPARC_16: | |
1636 | case elfcpp::R_SPARC_11: | |
1637 | case elfcpp::R_SPARC_10: | |
1638 | case elfcpp::R_SPARC_8: | |
1639 | case elfcpp::R_SPARC_7: | |
1640 | case elfcpp::R_SPARC_6: | |
1641 | case elfcpp::R_SPARC_5: | |
1642 | // If building a shared library (or a position-independent | |
1643 | // executable), we need to create a dynamic relocation for | |
1644 | // this location. | |
1645 | if (parameters->options().output_is_position_independent()) | |
1646 | { | |
1647 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
32b769e1 DM |
1648 | |
1649 | check_non_pic(object, r_type); | |
f5314dd5 DM |
1650 | if (lsym.get_st_type() != elfcpp::STT_SECTION) |
1651 | { | |
1652 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
1653 | rela_dyn->add_local(object, r_sym, orig_r_type, output_section, | |
1654 | data_shndx, reloc.get_r_offset(), | |
1655 | reloc.get_r_addend()); | |
1656 | } | |
1657 | else | |
1658 | { | |
1659 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
1660 | gold_assert(lsym.get_st_value() == 0); | |
1661 | rela_dyn->add_local_relative(object, r_sym, orig_r_type, | |
1662 | output_section, data_shndx, | |
1663 | reloc.get_r_offset(), | |
1664 | reloc.get_r_addend()); | |
1665 | } | |
1666 | } | |
1667 | break; | |
1668 | ||
1669 | case elfcpp::R_SPARC_WDISP30: | |
1670 | case elfcpp::R_SPARC_WDISP22: | |
1671 | case elfcpp::R_SPARC_WDISP19: | |
1672 | case elfcpp::R_SPARC_WDISP16: | |
1673 | case elfcpp::R_SPARC_DISP8: | |
1674 | case elfcpp::R_SPARC_DISP16: | |
1675 | case elfcpp::R_SPARC_DISP32: | |
1676 | case elfcpp::R_SPARC_DISP64: | |
1677 | case elfcpp::R_SPARC_PC10: | |
1678 | case elfcpp::R_SPARC_PC22: | |
1679 | break; | |
1680 | ||
1681 | case elfcpp::R_SPARC_GOT10: | |
1682 | case elfcpp::R_SPARC_GOT13: | |
1683 | case elfcpp::R_SPARC_GOT22: | |
1684 | { | |
1685 | // The symbol requires a GOT entry. | |
1686 | Output_data_got<size, big_endian>* got; | |
1687 | unsigned int r_sym; | |
1688 | ||
1689 | got = target->got_section(symtab, layout); | |
1690 | r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
1691 | ||
1692 | // If we are generating a shared object, we need to add a | |
1693 | // dynamic relocation for this symbol's GOT entry. | |
1694 | if (parameters->options().output_is_position_independent()) | |
1695 | { | |
1696 | if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)) | |
1697 | { | |
1698 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
1699 | unsigned int off; | |
1700 | ||
1701 | off = got->add_constant(0); | |
1702 | object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off); | |
1703 | rela_dyn->add_local_relative(object, r_sym, | |
1704 | elfcpp::R_SPARC_RELATIVE, | |
1705 | got, off, 0); | |
1706 | } | |
1707 | } | |
1708 | else | |
1709 | got->add_local(object, r_sym, GOT_TYPE_STANDARD); | |
1710 | } | |
1711 | break; | |
1712 | ||
1713 | // These are initial TLS relocs, which are expected when | |
1714 | // linking. | |
1715 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
1716 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
1717 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
1718 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
1719 | case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic | |
1720 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
1721 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
1722 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
1723 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
1724 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
1725 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
1726 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
1727 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
1728 | case elfcpp::R_SPARC_TLS_IE_LD: | |
1729 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
1730 | case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec | |
1731 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
1732 | { | |
1733 | bool output_is_shared = parameters->options().shared(); | |
1734 | const tls::Tls_optimization optimized_type | |
1735 | = optimize_tls_reloc(!output_is_shared, r_type); | |
1736 | switch (r_type) | |
1737 | { | |
1738 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
1739 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
1740 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
1741 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
1742 | if (optimized_type == tls::TLSOPT_NONE) | |
1743 | { | |
1744 | // Create a pair of GOT entries for the module index and | |
1745 | // dtv-relative offset. | |
1746 | Output_data_got<size, big_endian>* got | |
1747 | = target->got_section(symtab, layout); | |
1748 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
d491d34e ILT |
1749 | unsigned int shndx = lsym.get_st_shndx(); |
1750 | bool is_ordinary; | |
1751 | shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
1752 | if (!is_ordinary) | |
1753 | object->error(_("local symbol %u has bad shndx %u"), | |
1754 | r_sym, shndx); | |
1755 | else | |
1756 | got->add_local_pair_with_rela(object, r_sym, | |
1757 | lsym.get_st_shndx(), | |
1758 | GOT_TYPE_TLS_PAIR, | |
1759 | target->rela_dyn_section(layout), | |
1760 | (size == 64 | |
1761 | ? elfcpp::R_SPARC_TLS_DTPMOD64 | |
1762 | : elfcpp::R_SPARC_TLS_DTPMOD32), | |
1763 | 0); | |
f5314dd5 DM |
1764 | if (r_type == elfcpp::R_SPARC_TLS_GD_CALL) |
1765 | generate_tls_call(symtab, layout, target); | |
1766 | } | |
1767 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
1768 | unsupported_reloc_local(object, r_type); | |
1769 | break; | |
1770 | ||
1771 | case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic | |
1772 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
1773 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
1774 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
1775 | if (optimized_type == tls::TLSOPT_NONE) | |
1776 | { | |
1777 | // Create a GOT entry for the module index. | |
1778 | target->got_mod_index_entry(symtab, layout, object); | |
1779 | ||
1780 | if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL) | |
1781 | generate_tls_call(symtab, layout, target); | |
1782 | } | |
1783 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
1784 | unsupported_reloc_local(object, r_type); | |
1785 | break; | |
1786 | ||
1787 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
1788 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
1789 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
1790 | break; | |
1791 | ||
1792 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
1793 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
1794 | case elfcpp::R_SPARC_TLS_IE_LD: | |
1795 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
1796 | layout->set_has_static_tls(); | |
1797 | if (optimized_type == tls::TLSOPT_NONE) | |
1798 | { | |
1799 | // Create a GOT entry for the tp-relative offset. | |
1800 | Output_data_got<size, big_endian>* got | |
1801 | = target->got_section(symtab, layout); | |
1802 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
1803 | ||
1804 | if (!object->local_has_got_offset(r_sym, GOT_TYPE_TLS_OFFSET)) | |
1805 | { | |
1806 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
1807 | unsigned int off = got->add_constant(0); | |
1808 | ||
1809 | object->set_local_got_offset(r_sym, GOT_TYPE_TLS_OFFSET, | |
1810 | off); | |
1811 | rela_dyn->add_local_relative(object, r_sym, | |
1812 | (size == 64 ? | |
1813 | elfcpp::R_SPARC_TLS_TPOFF64 : | |
1814 | elfcpp::R_SPARC_TLS_TPOFF32), | |
1815 | got, off, 0); | |
1816 | } | |
1817 | } | |
1818 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
1819 | unsupported_reloc_local(object, r_type); | |
1820 | break; | |
1821 | ||
1822 | case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec | |
1823 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
1824 | layout->set_has_static_tls(); | |
1825 | if (output_is_shared) | |
1826 | { | |
1827 | // We need to create a dynamic relocation. | |
1828 | gold_assert(lsym.get_st_type() != elfcpp::STT_SECTION); | |
1829 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
1830 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
1831 | rela_dyn->add_local_relative(object, r_sym, r_type, | |
1832 | output_section, data_shndx, | |
1833 | reloc.get_r_offset(), 0); | |
1834 | } | |
1835 | break; | |
1836 | } | |
1837 | } | |
1838 | break; | |
1839 | ||
1840 | // These are relocations which should only be seen by the | |
1841 | // dynamic linker, and should never be seen here. | |
1842 | case elfcpp::R_SPARC_COPY: | |
1843 | case elfcpp::R_SPARC_GLOB_DAT: | |
1844 | case elfcpp::R_SPARC_JMP_SLOT: | |
1845 | case elfcpp::R_SPARC_RELATIVE: | |
1846 | case elfcpp::R_SPARC_TLS_DTPMOD64: | |
1847 | case elfcpp::R_SPARC_TLS_DTPMOD32: | |
1848 | case elfcpp::R_SPARC_TLS_DTPOFF64: | |
1849 | case elfcpp::R_SPARC_TLS_DTPOFF32: | |
1850 | case elfcpp::R_SPARC_TLS_TPOFF64: | |
1851 | case elfcpp::R_SPARC_TLS_TPOFF32: | |
1852 | gold_error(_("%s: unexpected reloc %u in object file"), | |
1853 | object->name().c_str(), r_type); | |
1854 | break; | |
1855 | ||
1856 | default: | |
1857 | unsupported_reloc_local(object, r_type); | |
1858 | break; | |
1859 | } | |
1860 | } | |
1861 | ||
1862 | // Report an unsupported relocation against a global symbol. | |
1863 | ||
1864 | template<int size, bool big_endian> | |
1865 | void | |
1866 | Target_sparc<size, big_endian>::Scan::unsupported_reloc_global( | |
1867 | Sized_relobj<size, big_endian>* object, | |
1868 | unsigned int r_type, | |
1869 | Symbol* gsym) | |
1870 | { | |
1871 | gold_error(_("%s: unsupported reloc %u against global symbol %s"), | |
1872 | object->name().c_str(), r_type, gsym->demangled_name().c_str()); | |
1873 | } | |
1874 | ||
1875 | // Scan a relocation for a global symbol. | |
1876 | ||
1877 | template<int size, bool big_endian> | |
1878 | inline void | |
1879 | Target_sparc<size, big_endian>::Scan::global( | |
12c0daef | 1880 | const General_options&, |
f5314dd5 DM |
1881 | Symbol_table* symtab, |
1882 | Layout* layout, | |
1883 | Target_sparc<size, big_endian>* target, | |
1884 | Sized_relobj<size, big_endian>* object, | |
1885 | unsigned int data_shndx, | |
1886 | Output_section* output_section, | |
1887 | const elfcpp::Rela<size, big_endian>& reloc, | |
1888 | unsigned int r_type, | |
1889 | Symbol* gsym) | |
1890 | { | |
1891 | unsigned int orig_r_type = r_type; | |
1892 | ||
1893 | r_type &= 0xff; | |
1894 | switch (r_type) | |
1895 | { | |
1896 | case elfcpp::R_SPARC_NONE: | |
1897 | case elfcpp::R_SPARC_REGISTER: | |
1898 | case elfcpp::R_SPARC_GNU_VTINHERIT: | |
1899 | case elfcpp::R_SPARC_GNU_VTENTRY: | |
1900 | break; | |
1901 | ||
1902 | case elfcpp::R_SPARC_PLT64: | |
1903 | case elfcpp::R_SPARC_PLT32: | |
1904 | case elfcpp::R_SPARC_HIPLT22: | |
1905 | case elfcpp::R_SPARC_LOPLT10: | |
1906 | case elfcpp::R_SPARC_PCPLT32: | |
1907 | case elfcpp::R_SPARC_PCPLT22: | |
1908 | case elfcpp::R_SPARC_PCPLT10: | |
1909 | case elfcpp::R_SPARC_WPLT30: | |
1910 | // If the symbol is fully resolved, this is just a PC32 reloc. | |
1911 | // Otherwise we need a PLT entry. | |
1912 | if (gsym->final_value_is_known()) | |
1913 | break; | |
1914 | // If building a shared library, we can also skip the PLT entry | |
1915 | // if the symbol is defined in the output file and is protected | |
1916 | // or hidden. | |
1917 | if (gsym->is_defined() | |
1918 | && !gsym->is_from_dynobj() | |
1919 | && !gsym->is_preemptible()) | |
1920 | break; | |
1921 | target->make_plt_entry(symtab, layout, gsym); | |
1922 | break; | |
1923 | ||
1924 | case elfcpp::R_SPARC_DISP8: | |
1925 | case elfcpp::R_SPARC_DISP16: | |
1926 | case elfcpp::R_SPARC_DISP32: | |
1927 | case elfcpp::R_SPARC_DISP64: | |
1928 | case elfcpp::R_SPARC_PC_HH22: | |
1929 | case elfcpp::R_SPARC_PC_HM10: | |
1930 | case elfcpp::R_SPARC_PC_LM22: | |
1931 | case elfcpp::R_SPARC_PC10: | |
1932 | case elfcpp::R_SPARC_PC22: | |
1933 | case elfcpp::R_SPARC_WDISP30: | |
1934 | case elfcpp::R_SPARC_WDISP22: | |
1935 | case elfcpp::R_SPARC_WDISP19: | |
1936 | case elfcpp::R_SPARC_WDISP16: | |
1937 | { | |
1938 | if (gsym->needs_plt_entry()) | |
1939 | target->make_plt_entry(symtab, layout, gsym); | |
1940 | // Make a dynamic relocation if necessary. | |
1941 | int flags = Symbol::NON_PIC_REF; | |
1942 | if (gsym->type() == elfcpp::STT_FUNC) | |
1943 | flags |= Symbol::FUNCTION_CALL; | |
1944 | if (gsym->needs_dynamic_reloc(flags)) | |
1945 | { | |
1946 | if (target->may_need_copy_reloc(gsym)) | |
1947 | { | |
12c0daef | 1948 | target->copy_reloc(symtab, layout, object, |
f5314dd5 DM |
1949 | data_shndx, output_section, gsym, |
1950 | reloc); | |
1951 | } | |
1952 | else | |
1953 | { | |
1954 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
32b769e1 | 1955 | check_non_pic(object, r_type); |
f5314dd5 DM |
1956 | rela_dyn->add_global(gsym, orig_r_type, output_section, object, |
1957 | data_shndx, reloc.get_r_offset(), | |
1958 | reloc.get_r_addend()); | |
1959 | } | |
1960 | } | |
1961 | } | |
1962 | break; | |
1963 | ||
1964 | case elfcpp::R_SPARC_UA64: | |
1965 | case elfcpp::R_SPARC_64: | |
1966 | case elfcpp::R_SPARC_HIX22: | |
1967 | case elfcpp::R_SPARC_LOX10: | |
1968 | case elfcpp::R_SPARC_H44: | |
1969 | case elfcpp::R_SPARC_M44: | |
1970 | case elfcpp::R_SPARC_L44: | |
1971 | case elfcpp::R_SPARC_HH22: | |
1972 | case elfcpp::R_SPARC_HM10: | |
1973 | case elfcpp::R_SPARC_LM22: | |
1974 | case elfcpp::R_SPARC_HI22: | |
1975 | case elfcpp::R_SPARC_LO10: | |
1976 | case elfcpp::R_SPARC_OLO10: | |
1977 | case elfcpp::R_SPARC_UA32: | |
1978 | case elfcpp::R_SPARC_32: | |
1979 | case elfcpp::R_SPARC_UA16: | |
1980 | case elfcpp::R_SPARC_16: | |
1981 | case elfcpp::R_SPARC_11: | |
1982 | case elfcpp::R_SPARC_10: | |
1983 | case elfcpp::R_SPARC_8: | |
1984 | case elfcpp::R_SPARC_7: | |
1985 | case elfcpp::R_SPARC_6: | |
1986 | case elfcpp::R_SPARC_5: | |
1987 | { | |
1988 | // Make a PLT entry if necessary. | |
1989 | if (gsym->needs_plt_entry()) | |
1990 | { | |
1991 | target->make_plt_entry(symtab, layout, gsym); | |
1992 | // Since this is not a PC-relative relocation, we may be | |
1993 | // taking the address of a function. In that case we need to | |
1994 | // set the entry in the dynamic symbol table to the address of | |
1995 | // the PLT entry. | |
1996 | if (gsym->is_from_dynobj() && !parameters->options().shared()) | |
1997 | gsym->set_needs_dynsym_value(); | |
1998 | } | |
1999 | // Make a dynamic relocation if necessary. | |
2000 | if (gsym->needs_dynamic_reloc(Symbol::ABSOLUTE_REF)) | |
2001 | { | |
2002 | if (target->may_need_copy_reloc(gsym)) | |
2003 | { | |
12c0daef | 2004 | target->copy_reloc(symtab, layout, object, |
f5314dd5 DM |
2005 | data_shndx, output_section, gsym, reloc); |
2006 | } | |
2007 | else if ((r_type == elfcpp::R_SPARC_32 | |
2008 | || r_type == elfcpp::R_SPARC_64) | |
2009 | && gsym->can_use_relative_reloc(false)) | |
2010 | { | |
2011 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
2012 | rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE, | |
2013 | output_section, object, | |
2014 | data_shndx, reloc.get_r_offset(), | |
2015 | reloc.get_r_addend()); | |
2016 | } | |
2017 | else | |
2018 | { | |
2019 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
2020 | ||
32b769e1 | 2021 | check_non_pic(object, r_type); |
f5314dd5 DM |
2022 | if (gsym->is_from_dynobj() |
2023 | || gsym->is_undefined() | |
2024 | || gsym->is_preemptible()) | |
2025 | rela_dyn->add_global(gsym, orig_r_type, output_section, | |
2026 | object, data_shndx, | |
2027 | reloc.get_r_offset(), | |
2028 | reloc.get_r_addend()); | |
2029 | else | |
2030 | rela_dyn->add_global_relative(gsym, orig_r_type, | |
2031 | output_section, object, | |
2032 | data_shndx, | |
2033 | reloc.get_r_offset(), | |
2034 | reloc.get_r_addend()); | |
2035 | } | |
2036 | } | |
2037 | } | |
2038 | break; | |
2039 | ||
2040 | case elfcpp::R_SPARC_GOT10: | |
2041 | case elfcpp::R_SPARC_GOT13: | |
2042 | case elfcpp::R_SPARC_GOT22: | |
2043 | { | |
2044 | // The symbol requires a GOT entry. | |
2045 | Output_data_got<size, big_endian>* got; | |
2046 | ||
2047 | got = target->got_section(symtab, layout); | |
2048 | if (gsym->final_value_is_known()) | |
2049 | got->add_global(gsym, GOT_TYPE_STANDARD); | |
2050 | else | |
2051 | { | |
2052 | // If this symbol is not fully resolved, we need to add a | |
2053 | // dynamic relocation for it. | |
2054 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
2055 | if (gsym->is_from_dynobj() | |
2056 | || gsym->is_undefined() | |
2057 | || gsym->is_preemptible()) | |
2058 | got->add_global_with_rela(gsym, GOT_TYPE_STANDARD, rela_dyn, | |
2059 | elfcpp::R_SPARC_GLOB_DAT); | |
2060 | else if (!gsym->has_got_offset(GOT_TYPE_STANDARD)) | |
2061 | { | |
2062 | unsigned int off = got->add_constant(0); | |
2063 | ||
2064 | gsym->set_got_offset(GOT_TYPE_STANDARD, off); | |
2065 | rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE, | |
2066 | got, off, 0); | |
2067 | } | |
2068 | } | |
2069 | } | |
2070 | break; | |
2071 | ||
2072 | // These are initial tls relocs, which are expected when | |
2073 | // linking. | |
2074 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
2075 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2076 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2077 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2078 | case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic | |
2079 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2080 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2081 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2082 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
2083 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
2084 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
2085 | case elfcpp::R_SPARC_TLS_LE_HIX22: | |
2086 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
2087 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
2088 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2089 | case elfcpp::R_SPARC_TLS_IE_LD: | |
2090 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
2091 | { | |
2092 | const bool is_final = gsym->final_value_is_known(); | |
2093 | const tls::Tls_optimization optimized_type | |
2094 | = optimize_tls_reloc(is_final, r_type); | |
2095 | switch (r_type) | |
2096 | { | |
2097 | case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic | |
2098 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2099 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2100 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2101 | if (optimized_type == tls::TLSOPT_NONE) | |
2102 | { | |
2103 | // Create a pair of GOT entries for the module index and | |
2104 | // dtv-relative offset. | |
2105 | Output_data_got<size, big_endian>* got | |
2106 | = target->got_section(symtab, layout); | |
2107 | got->add_global_pair_with_rela(gsym, GOT_TYPE_TLS_PAIR, | |
2108 | target->rela_dyn_section(layout), | |
2109 | (size == 64 ? | |
2110 | elfcpp::R_SPARC_TLS_DTPMOD64 : | |
2111 | elfcpp::R_SPARC_TLS_DTPMOD32), | |
2112 | (size == 64 ? | |
2113 | elfcpp::R_SPARC_TLS_DTPOFF64 : | |
2114 | elfcpp::R_SPARC_TLS_DTPOFF32)); | |
2115 | ||
2116 | // Emit R_SPARC_WPLT30 against "__tls_get_addr" | |
2117 | if (r_type == elfcpp::R_SPARC_TLS_GD_CALL) | |
2118 | generate_tls_call(symtab, layout, target); | |
2119 | } | |
2120 | else if (optimized_type == tls::TLSOPT_TO_IE) | |
2121 | { | |
2122 | // Create a GOT entry for the tp-relative offset. | |
2123 | Output_data_got<size, big_endian>* got | |
2124 | = target->got_section(symtab, layout); | |
2125 | got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET, | |
2126 | target->rela_dyn_section(layout), | |
2127 | (size == 64 ? | |
2128 | elfcpp::R_SPARC_TLS_TPOFF64 : | |
2129 | elfcpp::R_SPARC_TLS_TPOFF32)); | |
2130 | } | |
2131 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
2132 | unsupported_reloc_global(object, r_type, gsym); | |
2133 | break; | |
2134 | ||
2135 | case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic | |
2136 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2137 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2138 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2139 | if (optimized_type == tls::TLSOPT_NONE) | |
2140 | { | |
2141 | // Create a GOT entry for the module index. | |
2142 | target->got_mod_index_entry(symtab, layout, object); | |
2143 | ||
2144 | if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL) | |
2145 | generate_tls_call(symtab, layout, target); | |
2146 | } | |
2147 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
2148 | unsupported_reloc_global(object, r_type, gsym); | |
2149 | break; | |
2150 | ||
2151 | case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic | |
2152 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
2153 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
2154 | break; | |
2155 | ||
2156 | case elfcpp::R_SPARC_TLS_LE_HIX22: | |
2157 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
2158 | layout->set_has_static_tls(); | |
2159 | if (parameters->options().shared()) | |
2160 | { | |
2161 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
2162 | rela_dyn->add_global_relative(gsym, orig_r_type, | |
2163 | output_section, object, | |
2164 | data_shndx, reloc.get_r_offset(), | |
2165 | 0); | |
2166 | } | |
2167 | break; | |
2168 | ||
2169 | case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec | |
2170 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2171 | case elfcpp::R_SPARC_TLS_IE_LD: | |
2172 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
2173 | layout->set_has_static_tls(); | |
2174 | if (optimized_type == tls::TLSOPT_NONE) | |
2175 | { | |
2176 | // Create a GOT entry for the tp-relative offset. | |
2177 | Output_data_got<size, big_endian>* got | |
2178 | = target->got_section(symtab, layout); | |
2179 | got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET, | |
2180 | target->rela_dyn_section(layout), | |
2181 | (size == 64 ? | |
2182 | elfcpp::R_SPARC_TLS_TPOFF64 : | |
2183 | elfcpp::R_SPARC_TLS_TPOFF32)); | |
2184 | } | |
2185 | else if (optimized_type != tls::TLSOPT_TO_LE) | |
2186 | unsupported_reloc_global(object, r_type, gsym); | |
2187 | break; | |
2188 | } | |
2189 | } | |
2190 | break; | |
2191 | ||
2192 | // These are relocations which should only be seen by the | |
2193 | // dynamic linker, and should never be seen here. | |
2194 | case elfcpp::R_SPARC_COPY: | |
2195 | case elfcpp::R_SPARC_GLOB_DAT: | |
2196 | case elfcpp::R_SPARC_JMP_SLOT: | |
2197 | case elfcpp::R_SPARC_RELATIVE: | |
2198 | case elfcpp::R_SPARC_TLS_DTPMOD64: | |
2199 | case elfcpp::R_SPARC_TLS_DTPMOD32: | |
2200 | case elfcpp::R_SPARC_TLS_DTPOFF64: | |
2201 | case elfcpp::R_SPARC_TLS_DTPOFF32: | |
2202 | case elfcpp::R_SPARC_TLS_TPOFF64: | |
2203 | case elfcpp::R_SPARC_TLS_TPOFF32: | |
2204 | gold_error(_("%s: unexpected reloc %u in object file"), | |
2205 | object->name().c_str(), r_type); | |
2206 | break; | |
2207 | ||
2208 | default: | |
2209 | unsupported_reloc_global(object, r_type, gsym); | |
2210 | break; | |
2211 | } | |
2212 | } | |
2213 | ||
2214 | // Scan relocations for a section. | |
2215 | ||
2216 | template<int size, bool big_endian> | |
2217 | void | |
2218 | Target_sparc<size, big_endian>::scan_relocs( | |
2219 | const General_options& options, | |
2220 | Symbol_table* symtab, | |
2221 | Layout* layout, | |
2222 | Sized_relobj<size, big_endian>* object, | |
2223 | unsigned int data_shndx, | |
2224 | unsigned int sh_type, | |
2225 | const unsigned char* prelocs, | |
2226 | size_t reloc_count, | |
2227 | Output_section* output_section, | |
2228 | bool needs_special_offset_handling, | |
2229 | size_t local_symbol_count, | |
2230 | const unsigned char* plocal_symbols) | |
2231 | { | |
2232 | typedef Target_sparc<size, big_endian> Sparc; | |
2233 | typedef typename Target_sparc<size, big_endian>::Scan Scan; | |
2234 | ||
2235 | if (sh_type == elfcpp::SHT_REL) | |
2236 | { | |
2237 | gold_error(_("%s: unsupported REL reloc section"), | |
2238 | object->name().c_str()); | |
2239 | return; | |
2240 | } | |
2241 | ||
2242 | gold::scan_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>( | |
2243 | options, | |
2244 | symtab, | |
2245 | layout, | |
2246 | this, | |
2247 | object, | |
2248 | data_shndx, | |
2249 | prelocs, | |
2250 | reloc_count, | |
2251 | output_section, | |
2252 | needs_special_offset_handling, | |
2253 | local_symbol_count, | |
2254 | plocal_symbols); | |
2255 | } | |
2256 | ||
2257 | // Finalize the sections. | |
2258 | ||
2259 | template<int size, bool big_endian> | |
2260 | void | |
2261 | Target_sparc<size, big_endian>::do_finalize_sections(Layout* layout) | |
2262 | { | |
2263 | // Fill in some more dynamic tags. | |
2264 | Output_data_dynamic* const odyn = layout->dynamic_data(); | |
2265 | if (odyn != NULL) | |
2266 | { | |
2267 | if (this->plt_ != NULL) | |
2268 | { | |
2269 | const Output_data* od = this->plt_->rel_plt(); | |
2270 | odyn->add_section_size(elfcpp::DT_PLTRELSZ, od); | |
2271 | odyn->add_section_address(elfcpp::DT_JMPREL, od); | |
2272 | odyn->add_constant(elfcpp::DT_PLTREL, elfcpp::DT_RELA); | |
2273 | ||
2274 | odyn->add_section_address(elfcpp::DT_PLTGOT, this->plt_); | |
2275 | } | |
2276 | ||
2277 | if (this->rela_dyn_ != NULL) | |
2278 | { | |
2279 | const Output_data* od = this->rela_dyn_; | |
2280 | odyn->add_section_address(elfcpp::DT_RELA, od); | |
2281 | odyn->add_section_size(elfcpp::DT_RELASZ, od); | |
2282 | odyn->add_constant(elfcpp::DT_RELAENT, | |
2283 | elfcpp::Elf_sizes<size>::rela_size); | |
2284 | } | |
2285 | ||
2286 | if (!parameters->options().shared()) | |
2287 | { | |
2288 | // The value of the DT_DEBUG tag is filled in by the dynamic | |
2289 | // linker at run time, and used by the debugger. | |
2290 | odyn->add_constant(elfcpp::DT_DEBUG, 0); | |
2291 | } | |
2292 | } | |
2293 | ||
2294 | // Emit any relocs we saved in an attempt to avoid generating COPY | |
2295 | // relocs. | |
12c0daef ILT |
2296 | if (this->copy_relocs_.any_saved_relocs()) |
2297 | this->copy_relocs_.emit(this->rela_dyn_section(layout)); | |
f5314dd5 DM |
2298 | } |
2299 | ||
2300 | // Perform a relocation. | |
2301 | ||
2302 | template<int size, bool big_endian> | |
2303 | inline bool | |
2304 | Target_sparc<size, big_endian>::Relocate::relocate( | |
2305 | const Relocate_info<size, big_endian>* relinfo, | |
2306 | Target_sparc* target, | |
2307 | size_t relnum, | |
2308 | const elfcpp::Rela<size, big_endian>& rela, | |
2309 | unsigned int r_type, | |
2310 | const Sized_symbol<size>* gsym, | |
2311 | const Symbol_value<size>* psymval, | |
2312 | unsigned char* view, | |
2313 | typename elfcpp::Elf_types<size>::Elf_Addr address, | |
2314 | section_size_type view_size) | |
2315 | { | |
2316 | r_type &= 0xff; | |
2317 | ||
2318 | if (this->ignore_gd_add_) | |
2319 | { | |
2320 | if (r_type != elfcpp::R_SPARC_TLS_GD_ADD) | |
2321 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
2322 | _("missing expected TLS relocation")); | |
2323 | else | |
2324 | { | |
2325 | this->ignore_gd_add_ = false; | |
2326 | return false; | |
2327 | } | |
2328 | } | |
2329 | ||
2330 | typedef Sparc_relocate_functions<size, big_endian> Reloc; | |
2331 | ||
2332 | // Pick the value to use for symbols defined in shared objects. | |
2333 | Symbol_value<size> symval; | |
2334 | if (gsym != NULL | |
de4c45bd ILT |
2335 | && gsym->use_plt_offset(r_type == elfcpp::R_SPARC_DISP8 |
2336 | || r_type == elfcpp::R_SPARC_DISP16 | |
2337 | || r_type == elfcpp::R_SPARC_DISP32 | |
2338 | || r_type == elfcpp::R_SPARC_DISP64 | |
2339 | || r_type == elfcpp::R_SPARC_PC_HH22 | |
2340 | || r_type == elfcpp::R_SPARC_PC_HM10 | |
2341 | || r_type == elfcpp::R_SPARC_PC_LM22 | |
2342 | || r_type == elfcpp::R_SPARC_PC10 | |
2343 | || r_type == elfcpp::R_SPARC_PC22 | |
2344 | || r_type == elfcpp::R_SPARC_WDISP30 | |
2345 | || r_type == elfcpp::R_SPARC_WDISP22 | |
2346 | || r_type == elfcpp::R_SPARC_WDISP19 | |
2347 | || r_type == elfcpp::R_SPARC_WDISP16)) | |
f5314dd5 DM |
2348 | { |
2349 | elfcpp::Elf_Xword value; | |
2350 | ||
2351 | value = target->plt_section()->address() + gsym->plt_offset(); | |
2352 | ||
2353 | symval.set_output_value(value); | |
2354 | ||
2355 | psymval = &symval; | |
2356 | } | |
2357 | ||
2358 | const Sized_relobj<size, big_endian>* object = relinfo->object; | |
2359 | const elfcpp::Elf_Xword addend = rela.get_r_addend(); | |
2360 | ||
2361 | // Get the GOT offset if needed. Unlike i386 and x86_64, our GOT | |
2362 | // pointer points to the beginning, not the end, of the table. | |
2363 | // So we just use the plain offset. | |
2364 | bool have_got_offset = false; | |
2365 | unsigned int got_offset = 0; | |
2366 | switch (r_type) | |
2367 | { | |
2368 | case elfcpp::R_SPARC_GOT10: | |
2369 | case elfcpp::R_SPARC_GOT13: | |
2370 | case elfcpp::R_SPARC_GOT22: | |
2371 | if (gsym != NULL) | |
2372 | { | |
2373 | gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD)); | |
2374 | got_offset = gsym->got_offset(GOT_TYPE_STANDARD); | |
2375 | } | |
2376 | else | |
2377 | { | |
2378 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
2379 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)); | |
2380 | got_offset = object->local_got_offset(r_sym, GOT_TYPE_STANDARD); | |
2381 | } | |
2382 | have_got_offset = true; | |
2383 | break; | |
2384 | ||
2385 | default: | |
2386 | break; | |
2387 | } | |
2388 | ||
2389 | switch (r_type) | |
2390 | { | |
2391 | case elfcpp::R_SPARC_NONE: | |
2392 | case elfcpp::R_SPARC_REGISTER: | |
2393 | case elfcpp::R_SPARC_GNU_VTINHERIT: | |
2394 | case elfcpp::R_SPARC_GNU_VTENTRY: | |
2395 | break; | |
2396 | ||
2397 | case elfcpp::R_SPARC_8: | |
2398 | Relocate_functions<size, big_endian>::rela8(view, object, | |
2399 | psymval, addend); | |
2400 | break; | |
2401 | ||
2402 | case elfcpp::R_SPARC_16: | |
2403 | Relocate_functions<size, big_endian>::rela16(view, object, | |
2404 | psymval, addend); | |
2405 | break; | |
2406 | ||
2407 | case elfcpp::R_SPARC_32: | |
2408 | if (!parameters->options().output_is_position_independent()) | |
2409 | Relocate_functions<size, big_endian>::rela32(view, object, | |
2410 | psymval, addend); | |
2411 | break; | |
2412 | ||
2413 | case elfcpp::R_SPARC_DISP8: | |
2414 | Reloc::disp8(view, object, psymval, addend, address); | |
2415 | break; | |
2416 | ||
2417 | case elfcpp::R_SPARC_DISP16: | |
2418 | Reloc::disp16(view, object, psymval, addend, address); | |
2419 | break; | |
2420 | ||
2421 | case elfcpp::R_SPARC_DISP32: | |
2422 | Reloc::disp32(view, object, psymval, addend, address); | |
2423 | break; | |
2424 | ||
2425 | case elfcpp::R_SPARC_DISP64: | |
2426 | Reloc::disp64(view, object, psymval, addend, address); | |
2427 | break; | |
2428 | ||
2429 | case elfcpp::R_SPARC_WDISP30: | |
2430 | case elfcpp::R_SPARC_WPLT30: | |
2431 | Reloc::wdisp30(view, object, psymval, addend, address); | |
2432 | break; | |
2433 | ||
2434 | case elfcpp::R_SPARC_WDISP22: | |
2435 | Reloc::wdisp22(view, object, psymval, addend, address); | |
2436 | break; | |
2437 | ||
2438 | case elfcpp::R_SPARC_WDISP19: | |
2439 | Reloc::wdisp19(view, object, psymval, addend, address); | |
2440 | break; | |
2441 | ||
2442 | case elfcpp::R_SPARC_WDISP16: | |
2443 | Reloc::wdisp16(view, object, psymval, addend, address); | |
2444 | break; | |
2445 | ||
2446 | case elfcpp::R_SPARC_HI22: | |
2447 | Reloc::hi22(view, object, psymval, addend); | |
2448 | break; | |
2449 | ||
2450 | case elfcpp::R_SPARC_22: | |
2451 | Reloc::rela32_22(view, object, psymval, addend); | |
2452 | break; | |
2453 | ||
2454 | case elfcpp::R_SPARC_13: | |
2455 | Reloc::rela32_13(view, object, psymval, addend); | |
2456 | break; | |
2457 | ||
2458 | case elfcpp::R_SPARC_LO10: | |
2459 | Reloc::lo10(view, object, psymval, addend); | |
2460 | break; | |
2461 | ||
2462 | case elfcpp::R_SPARC_GOT10: | |
2463 | Reloc::lo10(view, got_offset, addend); | |
2464 | break; | |
2465 | ||
2466 | case elfcpp::R_SPARC_GOT13: | |
2467 | Reloc::rela32_13(view, got_offset, addend); | |
2468 | break; | |
2469 | ||
2470 | case elfcpp::R_SPARC_GOT22: | |
2471 | Reloc::hi22(view, got_offset, addend); | |
2472 | break; | |
2473 | ||
2474 | case elfcpp::R_SPARC_PC10: | |
2475 | Reloc::pc10(view, object, psymval, addend, address); | |
2476 | break; | |
2477 | ||
2478 | case elfcpp::R_SPARC_PC22: | |
2479 | Reloc::pc22(view, object, psymval, addend, address); | |
2480 | break; | |
2481 | ||
2482 | case elfcpp::R_SPARC_TLS_DTPOFF32: | |
2483 | case elfcpp::R_SPARC_UA32: | |
2484 | Reloc::ua32(view, object, psymval, addend); | |
2485 | break; | |
2486 | ||
2487 | case elfcpp::R_SPARC_PLT64: | |
2488 | Relocate_functions<size, big_endian>::rela64(view, object, | |
2489 | psymval, addend); | |
2490 | break; | |
2491 | ||
2492 | case elfcpp::R_SPARC_PLT32: | |
2493 | Relocate_functions<size, big_endian>::rela32(view, object, | |
2494 | psymval, addend); | |
2495 | break; | |
2496 | ||
2497 | case elfcpp::R_SPARC_HIPLT22: | |
2498 | Reloc::hi22(view, object, psymval, addend); | |
2499 | break; | |
2500 | ||
2501 | case elfcpp::R_SPARC_LOPLT10: | |
2502 | Reloc::lo10(view, object, psymval, addend); | |
2503 | break; | |
2504 | ||
2505 | case elfcpp::R_SPARC_PCPLT32: | |
2506 | Reloc::disp32(view, object, psymval, addend, address); | |
2507 | break; | |
2508 | ||
2509 | case elfcpp::R_SPARC_PCPLT22: | |
2510 | Reloc::pcplt22(view, object, psymval, addend, address); | |
2511 | break; | |
2512 | ||
2513 | case elfcpp::R_SPARC_PCPLT10: | |
2514 | Reloc::lo10(view, object, psymval, addend, address); | |
2515 | break; | |
2516 | ||
2517 | case elfcpp::R_SPARC_64: | |
2518 | if (!parameters->options().output_is_position_independent()) | |
2519 | Relocate_functions<size, big_endian>::rela64(view, object, | |
2520 | psymval, addend); | |
2521 | break; | |
2522 | ||
2523 | case elfcpp::R_SPARC_OLO10: | |
2524 | { | |
2525 | unsigned int addend2 = rela.get_r_info() & 0xffffffff; | |
2526 | addend2 = ((addend2 >> 8) ^ 0x800000) - 0x800000; | |
2527 | Reloc::olo10(view, object, psymval, addend, addend2); | |
2528 | } | |
2529 | break; | |
2530 | ||
2531 | case elfcpp::R_SPARC_HH22: | |
2532 | Reloc::hh22(view, object, psymval, addend); | |
2533 | break; | |
2534 | ||
2535 | case elfcpp::R_SPARC_PC_HH22: | |
2536 | Reloc::pc_hh22(view, object, psymval, addend, address); | |
2537 | break; | |
2538 | ||
2539 | case elfcpp::R_SPARC_HM10: | |
2540 | Reloc::hm10(view, object, psymval, addend); | |
2541 | break; | |
2542 | ||
2543 | case elfcpp::R_SPARC_PC_HM10: | |
2544 | Reloc::pc_hm10(view, object, psymval, addend, address); | |
2545 | break; | |
2546 | ||
2547 | case elfcpp::R_SPARC_LM22: | |
2548 | Reloc::hi22(view, object, psymval, addend); | |
2549 | break; | |
2550 | ||
2551 | case elfcpp::R_SPARC_PC_LM22: | |
2552 | Reloc::pcplt22(view, object, psymval, addend, address); | |
2553 | break; | |
2554 | ||
2555 | case elfcpp::R_SPARC_11: | |
2556 | Reloc::rela32_11(view, object, psymval, addend); | |
2557 | break; | |
2558 | ||
2559 | case elfcpp::R_SPARC_10: | |
2560 | Reloc::rela32_10(view, object, psymval, addend); | |
2561 | break; | |
2562 | ||
2563 | case elfcpp::R_SPARC_7: | |
2564 | Reloc::rela32_7(view, object, psymval, addend); | |
2565 | break; | |
2566 | ||
2567 | case elfcpp::R_SPARC_6: | |
2568 | Reloc::rela32_6(view, object, psymval, addend); | |
2569 | break; | |
2570 | ||
2571 | case elfcpp::R_SPARC_5: | |
2572 | Reloc::rela32_5(view, object, psymval, addend); | |
2573 | break; | |
2574 | ||
2575 | case elfcpp::R_SPARC_HIX22: | |
2576 | Reloc::hix22(view, object, psymval, addend); | |
2577 | break; | |
2578 | ||
2579 | case elfcpp::R_SPARC_LOX10: | |
2580 | Reloc::lox10(view, object, psymval, addend); | |
2581 | break; | |
2582 | ||
2583 | case elfcpp::R_SPARC_H44: | |
2584 | Reloc::h44(view, object, psymval, addend); | |
2585 | break; | |
2586 | ||
2587 | case elfcpp::R_SPARC_M44: | |
2588 | Reloc::m44(view, object, psymval, addend); | |
2589 | break; | |
2590 | ||
2591 | case elfcpp::R_SPARC_L44: | |
2592 | Reloc::l44(view, object, psymval, addend); | |
2593 | break; | |
2594 | ||
2595 | case elfcpp::R_SPARC_TLS_DTPOFF64: | |
2596 | case elfcpp::R_SPARC_UA64: | |
2597 | Reloc::ua64(view, object, psymval, addend); | |
2598 | break; | |
2599 | ||
2600 | case elfcpp::R_SPARC_UA16: | |
2601 | Reloc::ua16(view, object, psymval, addend); | |
2602 | break; | |
2603 | ||
2604 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
2605 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2606 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2607 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2608 | case elfcpp::R_SPARC_TLS_LDM_HI22: | |
2609 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2610 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2611 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2612 | case elfcpp::R_SPARC_TLS_LDO_HIX22: | |
2613 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
2614 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
2615 | case elfcpp::R_SPARC_TLS_IE_HI22: | |
2616 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2617 | case elfcpp::R_SPARC_TLS_IE_LD: | |
2618 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
2619 | case elfcpp::R_SPARC_TLS_LE_HIX22: | |
2620 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
2621 | this->relocate_tls(relinfo, target, relnum, rela, | |
2622 | r_type, gsym, psymval, view, | |
2623 | address, view_size); | |
2624 | break; | |
2625 | ||
2626 | case elfcpp::R_SPARC_COPY: | |
2627 | case elfcpp::R_SPARC_GLOB_DAT: | |
2628 | case elfcpp::R_SPARC_JMP_SLOT: | |
2629 | case elfcpp::R_SPARC_RELATIVE: | |
2630 | // These are outstanding tls relocs, which are unexpected when | |
2631 | // linking. | |
2632 | case elfcpp::R_SPARC_TLS_DTPMOD64: | |
2633 | case elfcpp::R_SPARC_TLS_DTPMOD32: | |
2634 | case elfcpp::R_SPARC_TLS_TPOFF64: | |
2635 | case elfcpp::R_SPARC_TLS_TPOFF32: | |
2636 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
2637 | _("unexpected reloc %u in object file"), | |
2638 | r_type); | |
2639 | break; | |
2640 | ||
2641 | default: | |
2642 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
2643 | _("unsupported reloc %u"), | |
2644 | r_type); | |
2645 | break; | |
2646 | } | |
2647 | ||
2648 | return true; | |
2649 | } | |
2650 | ||
2651 | // Perform a TLS relocation. | |
2652 | ||
2653 | template<int size, bool big_endian> | |
2654 | inline void | |
2655 | Target_sparc<size, big_endian>::Relocate::relocate_tls( | |
2656 | const Relocate_info<size, big_endian>* relinfo, | |
2657 | Target_sparc<size, big_endian>* target, | |
2658 | size_t relnum, | |
2659 | const elfcpp::Rela<size, big_endian>& rela, | |
2660 | unsigned int r_type, | |
2661 | const Sized_symbol<size>* gsym, | |
2662 | const Symbol_value<size>* psymval, | |
2663 | unsigned char* view, | |
2664 | typename elfcpp::Elf_types<size>::Elf_Addr address, | |
2665 | section_size_type) | |
2666 | { | |
2667 | Output_segment* tls_segment = relinfo->layout->tls_segment(); | |
2668 | typedef Sparc_relocate_functions<size, big_endian> Reloc; | |
2669 | const Sized_relobj<size, big_endian>* object = relinfo->object; | |
2670 | typedef typename elfcpp::Swap<32, true>::Valtype Insntype; | |
2671 | ||
2672 | const elfcpp::Elf_Xword addend = rela.get_r_addend(); | |
2673 | typename elfcpp::Elf_types<size>::Elf_Addr value = psymval->value(object, 0); | |
2674 | ||
2675 | const bool is_final = | |
2676 | (gsym == NULL | |
2677 | ? !parameters->options().output_is_position_independent() | |
2678 | : gsym->final_value_is_known()); | |
2679 | const tls::Tls_optimization optimized_type | |
2680 | = optimize_tls_reloc(is_final, r_type); | |
2681 | ||
2682 | switch (r_type) | |
2683 | { | |
2684 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
2685 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2686 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2687 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2688 | if (optimized_type == tls::TLSOPT_TO_LE) | |
2689 | { | |
2690 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
2691 | Insntype val; | |
2692 | ||
2693 | value -= tls_segment->memsz(); | |
2694 | ||
2695 | switch (r_type) | |
2696 | { | |
2697 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
2698 | // TLS_GD_HI22 --> TLS_LE_HIX22 | |
2699 | Reloc::hix22(view, value, addend); | |
2700 | break; | |
2701 | ||
2702 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2703 | // TLS_GD_LO10 --> TLS_LE_LOX10 | |
2704 | Reloc::lox10(view, value, addend); | |
2705 | break; | |
2706 | ||
2707 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2708 | // add %reg1, %reg2, %reg3 --> mov %g7, %reg2, %reg3 | |
2709 | val = elfcpp::Swap<32, true>::readval(wv); | |
2710 | val = (val & ~0x7c000) | 0x1c000; | |
2711 | elfcpp::Swap<32, true>::writeval(wv, val); | |
2712 | break; | |
2713 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2714 | // call __tls_get_addr --> nop | |
2715 | elfcpp::Swap<32, true>::writeval(wv, sparc_nop); | |
2716 | break; | |
2717 | } | |
2718 | break; | |
2719 | } | |
2720 | else | |
2721 | { | |
2722 | unsigned int got_type = (optimized_type == tls::TLSOPT_TO_IE | |
2723 | ? GOT_TYPE_TLS_OFFSET | |
2724 | : GOT_TYPE_TLS_PAIR); | |
2725 | if (gsym != NULL) | |
2726 | { | |
2727 | gold_assert(gsym->has_got_offset(got_type)); | |
2728 | value = gsym->got_offset(got_type); | |
2729 | } | |
2730 | else | |
2731 | { | |
2732 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
2733 | gold_assert(object->local_has_got_offset(r_sym, got_type)); | |
2734 | value = object->local_got_offset(r_sym, got_type); | |
2735 | } | |
2736 | if (optimized_type == tls::TLSOPT_TO_IE) | |
2737 | { | |
2738 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
2739 | Insntype val; | |
2740 | ||
2741 | switch (r_type) | |
2742 | { | |
2743 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
2744 | // TLS_GD_HI22 --> TLS_IE_HI22 | |
2745 | Reloc::hi22(view, value, addend); | |
2746 | break; | |
2747 | ||
2748 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2749 | // TLS_GD_LO10 --> TLS_IE_LO10 | |
2750 | Reloc::lo10(view, value, addend); | |
2751 | break; | |
2752 | ||
2753 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2754 | // add %reg1, %reg2, %reg3 --> ld [%reg1 + %reg2], %reg3 | |
2755 | val = elfcpp::Swap<32, true>::readval(wv); | |
2756 | ||
2757 | if (size == 64) | |
2758 | val |= 0xc0580000; | |
2759 | else | |
2760 | val |= 0xc0000000; | |
2761 | ||
2762 | elfcpp::Swap<32, true>::writeval(wv, val); | |
2763 | break; | |
2764 | ||
2765 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2766 | // The compiler can put the TLS_GD_ADD instruction | |
2767 | // into the delay slot of the call. If so, we need | |
2768 | // to transpose the two instructions so that the | |
2769 | // the new sequence works properly. | |
2770 | // | |
2771 | // The test we use is if the instruction in the | |
2772 | // delay slot is an add with destination register | |
2773 | // equal to %o0 | |
2774 | val = elfcpp::Swap<32, true>::readval(wv + 1); | |
2775 | if ((val & 0x81f80000) == 0x80000000 | |
2776 | && ((val >> 25) & 0x1f) == 0x8) | |
2777 | { | |
2778 | if (size == 64) | |
2779 | val |= 0xc0580000; | |
2780 | else | |
2781 | val |= 0xc0000000; | |
2782 | ||
2783 | elfcpp::Swap<32, true>::writeval(wv, val); | |
2784 | ||
2785 | wv += 1; | |
2786 | this->ignore_gd_add_ = true; | |
2787 | } | |
2788 | ||
2789 | // call __tls_get_addr --> add %g7, %o0, %o0 | |
2790 | elfcpp::Swap<32, true>::writeval(wv, 0x9001c008); | |
2791 | break; | |
2792 | } | |
2793 | break; | |
2794 | } | |
2795 | else if (optimized_type == tls::TLSOPT_NONE) | |
2796 | { | |
2797 | switch (r_type) | |
2798 | { | |
2799 | case elfcpp::R_SPARC_TLS_GD_HI22: | |
2800 | Reloc::hi22(view, value, addend); | |
2801 | break; | |
2802 | case elfcpp::R_SPARC_TLS_GD_LO10: | |
2803 | Reloc::lo10(view, value, addend); | |
2804 | break; | |
2805 | case elfcpp::R_SPARC_TLS_GD_ADD: | |
2806 | break; | |
2807 | case elfcpp::R_SPARC_TLS_GD_CALL: | |
2808 | { | |
2809 | Symbol_value<size> symval; | |
2810 | elfcpp::Elf_Xword value; | |
2811 | Symbol* tsym; | |
2812 | ||
2813 | tsym = target->tls_get_addr_sym_; | |
2814 | gold_assert(tsym); | |
2815 | value = (target->plt_section()->address() + | |
2816 | tsym->plt_offset()); | |
2817 | symval.set_output_value(value); | |
2818 | Reloc::wdisp30(view, object, &symval, addend, address); | |
2819 | } | |
2820 | break; | |
2821 | } | |
2822 | break; | |
2823 | } | |
2824 | } | |
2825 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
2826 | _("unsupported reloc %u"), | |
2827 | r_type); | |
2828 | break; | |
2829 | ||
2830 | case elfcpp::R_SPARC_TLS_LDM_HI22: | |
2831 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2832 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2833 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2834 | if (optimized_type == tls::TLSOPT_TO_LE) | |
2835 | { | |
2836 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
2837 | ||
2838 | switch (r_type) | |
2839 | { | |
2840 | case elfcpp::R_SPARC_TLS_LDM_HI22: | |
2841 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2842 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2843 | elfcpp::Swap<32, true>::writeval(wv, sparc_nop); | |
2844 | break; | |
2845 | ||
2846 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2847 | elfcpp::Swap<32, true>::writeval(wv, sparc_mov_g0_o0); | |
2848 | break; | |
2849 | } | |
2850 | break; | |
2851 | } | |
2852 | else if (optimized_type == tls::TLSOPT_NONE) | |
2853 | { | |
2854 | // Relocate the field with the offset of the GOT entry for | |
2855 | // the module index. | |
2856 | unsigned int got_offset; | |
2857 | ||
2858 | got_offset = target->got_mod_index_entry(NULL, NULL, NULL); | |
2859 | switch (r_type) | |
2860 | { | |
2861 | case elfcpp::R_SPARC_TLS_LDM_HI22: | |
2862 | Reloc::hi22(view, got_offset, addend); | |
2863 | break; | |
2864 | case elfcpp::R_SPARC_TLS_LDM_LO10: | |
2865 | Reloc::lo10(view, got_offset, addend); | |
2866 | break; | |
2867 | case elfcpp::R_SPARC_TLS_LDM_ADD: | |
2868 | break; | |
2869 | case elfcpp::R_SPARC_TLS_LDM_CALL: | |
2870 | { | |
2871 | Symbol_value<size> symval; | |
2872 | elfcpp::Elf_Xword value; | |
2873 | Symbol* tsym; | |
2874 | ||
2875 | tsym = target->tls_get_addr_sym_; | |
2876 | gold_assert(tsym); | |
2877 | value = (target->plt_section()->address() + | |
2878 | tsym->plt_offset()); | |
2879 | symval.set_output_value(value); | |
2880 | Reloc::wdisp30(view, object, &symval, addend, address); | |
2881 | } | |
2882 | break; | |
2883 | } | |
2884 | break; | |
2885 | } | |
2886 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
2887 | _("unsupported reloc %u"), | |
2888 | r_type); | |
2889 | break; | |
2890 | ||
2891 | // These relocs can appear in debugging sections, in which case | |
2892 | // we won't see the TLS_LDM relocs. The local_dynamic_type | |
2893 | // field tells us this. | |
2894 | case elfcpp::R_SPARC_TLS_LDO_HIX22: | |
2895 | if (optimized_type == tls::TLSOPT_TO_LE) | |
2896 | { | |
2897 | value -= tls_segment->memsz(); | |
2898 | Reloc::hix22(view, value, addend); | |
2899 | } | |
2900 | else | |
2901 | Reloc::ldo_hix22(view, value, addend); | |
2902 | break; | |
2903 | case elfcpp::R_SPARC_TLS_LDO_LOX10: | |
2904 | if (optimized_type == tls::TLSOPT_TO_LE) | |
2905 | { | |
2906 | value -= tls_segment->memsz(); | |
2907 | Reloc::lox10(view, value, addend); | |
2908 | } | |
2909 | else | |
2910 | Reloc::ldo_lox10(view, value, addend); | |
2911 | break; | |
2912 | case elfcpp::R_SPARC_TLS_LDO_ADD: | |
2913 | if (optimized_type == tls::TLSOPT_TO_LE) | |
2914 | { | |
2915 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
2916 | Insntype val; | |
2917 | ||
2918 | // add %reg1, %reg2, %reg3 --> add %g7, %reg2, %reg3 | |
2919 | val = elfcpp::Swap<32, true>::readval(wv); | |
2920 | val = (val & ~0x7c000) | 0x1c000; | |
2921 | elfcpp::Swap<32, true>::writeval(wv, val); | |
2922 | } | |
2923 | break; | |
2924 | ||
2925 | // When optimizing IE --> LE, the only relocation that is handled | |
2926 | // differently is R_SPARC_TLS_IE_LD, it is rewritten from | |
2927 | // 'ld{,x} [rs1 + rs2], rd' into 'mov rs2, rd' or simply a NOP is | |
2928 | // rs2 and rd are the same. | |
2929 | case elfcpp::R_SPARC_TLS_IE_LD: | |
2930 | case elfcpp::R_SPARC_TLS_IE_LDX: | |
2931 | if (optimized_type == tls::TLSOPT_TO_LE) | |
2932 | { | |
2933 | Insntype* wv = reinterpret_cast<Insntype*>(view); | |
2934 | Insntype val = elfcpp::Swap<32, true>::readval(wv); | |
2935 | Insntype rs2 = val & 0x1f; | |
2936 | Insntype rd = (val >> 25) & 0x1f; | |
2937 | ||
2938 | if (rs2 == rd) | |
2939 | val = sparc_nop; | |
2940 | else | |
2941 | val = sparc_mov | (val & 0x3e00001f); | |
2942 | ||
2943 | elfcpp::Swap<32, true>::writeval(wv, val); | |
2944 | } | |
2945 | break; | |
2946 | ||
2947 | case elfcpp::R_SPARC_TLS_IE_HI22: | |
2948 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2949 | if (optimized_type == tls::TLSOPT_TO_LE) | |
2950 | { | |
2951 | value -= tls_segment->memsz(); | |
2952 | switch (r_type) | |
2953 | { | |
2954 | case elfcpp::R_SPARC_TLS_IE_HI22: | |
2955 | // IE_HI22 --> LE_HIX22 | |
2956 | Reloc::hix22(view, value, addend); | |
2957 | break; | |
2958 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2959 | // IE_LO10 --> LE_LOX10 | |
2960 | Reloc::lox10(view, value, addend); | |
2961 | break; | |
2962 | } | |
2963 | break; | |
2964 | } | |
2965 | else if (optimized_type == tls::TLSOPT_NONE) | |
2966 | { | |
2967 | // Relocate the field with the offset of the GOT entry for | |
2968 | // the tp-relative offset of the symbol. | |
2969 | if (gsym != NULL) | |
2970 | { | |
2971 | gold_assert(gsym->has_got_offset(GOT_TYPE_TLS_OFFSET)); | |
2972 | value = gsym->got_offset(GOT_TYPE_TLS_OFFSET); | |
2973 | } | |
2974 | else | |
2975 | { | |
2976 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
2977 | gold_assert(object->local_has_got_offset(r_sym, | |
2978 | GOT_TYPE_TLS_OFFSET)); | |
2979 | value = object->local_got_offset(r_sym, | |
2980 | GOT_TYPE_TLS_OFFSET); | |
2981 | } | |
2982 | switch (r_type) | |
2983 | { | |
2984 | case elfcpp::R_SPARC_TLS_IE_HI22: | |
2985 | Reloc::hi22(view, value, addend); | |
2986 | break; | |
2987 | case elfcpp::R_SPARC_TLS_IE_LO10: | |
2988 | Reloc::lo10(view, value, addend); | |
2989 | break; | |
2990 | } | |
2991 | break; | |
2992 | } | |
2993 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
2994 | _("unsupported reloc %u"), | |
2995 | r_type); | |
2996 | break; | |
2997 | ||
2998 | case elfcpp::R_SPARC_TLS_LE_HIX22: | |
2999 | // If we're creating a shared library, a dynamic relocation will | |
3000 | // have been created for this location, so do not apply it now. | |
3001 | if (!parameters->options().shared()) | |
3002 | { | |
3003 | value -= tls_segment->memsz(); | |
3004 | Reloc::hix22(view, value, addend); | |
3005 | } | |
3006 | break; | |
3007 | ||
3008 | case elfcpp::R_SPARC_TLS_LE_LOX10: | |
3009 | // If we're creating a shared library, a dynamic relocation will | |
3010 | // have been created for this location, so do not apply it now. | |
3011 | if (!parameters->options().shared()) | |
3012 | { | |
3013 | value -= tls_segment->memsz(); | |
3014 | Reloc::lox10(view, value, addend); | |
3015 | } | |
3016 | break; | |
3017 | } | |
3018 | } | |
3019 | ||
3020 | // Relocate section data. | |
3021 | ||
3022 | template<int size, bool big_endian> | |
3023 | void | |
3024 | Target_sparc<size, big_endian>::relocate_section( | |
3025 | const Relocate_info<size, big_endian>* relinfo, | |
3026 | unsigned int sh_type, | |
3027 | const unsigned char* prelocs, | |
3028 | size_t reloc_count, | |
3029 | Output_section* output_section, | |
3030 | bool needs_special_offset_handling, | |
3031 | unsigned char* view, | |
3032 | typename elfcpp::Elf_types<size>::Elf_Addr address, | |
3033 | section_size_type view_size) | |
3034 | { | |
3035 | typedef Target_sparc<size, big_endian> Sparc; | |
3036 | typedef typename Target_sparc<size, big_endian>::Relocate Sparc_relocate; | |
3037 | ||
3038 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
3039 | ||
3040 | gold::relocate_section<size, big_endian, Sparc, elfcpp::SHT_RELA, | |
3041 | Sparc_relocate>( | |
3042 | relinfo, | |
3043 | this, | |
3044 | prelocs, | |
3045 | reloc_count, | |
3046 | output_section, | |
3047 | needs_special_offset_handling, | |
3048 | view, | |
3049 | address, | |
3050 | view_size); | |
3051 | } | |
3052 | ||
3053 | // Return the size of a relocation while scanning during a relocatable | |
3054 | // link. | |
3055 | ||
3056 | template<int size, bool big_endian> | |
3057 | unsigned int | |
3058 | Target_sparc<size, big_endian>::Relocatable_size_for_reloc::get_size_for_reloc( | |
3059 | unsigned int, | |
3060 | Relobj*) | |
3061 | { | |
3062 | // We are always SHT_RELA, so we should never get here. | |
3063 | gold_unreachable(); | |
3064 | return 0; | |
3065 | } | |
3066 | ||
3067 | // Scan the relocs during a relocatable link. | |
3068 | ||
3069 | template<int size, bool big_endian> | |
3070 | void | |
3071 | Target_sparc<size, big_endian>::scan_relocatable_relocs( | |
3072 | const General_options& options, | |
3073 | Symbol_table* symtab, | |
3074 | Layout* layout, | |
3075 | Sized_relobj<size, big_endian>* object, | |
3076 | unsigned int data_shndx, | |
3077 | unsigned int sh_type, | |
3078 | const unsigned char* prelocs, | |
3079 | size_t reloc_count, | |
3080 | Output_section* output_section, | |
3081 | bool needs_special_offset_handling, | |
3082 | size_t local_symbol_count, | |
3083 | const unsigned char* plocal_symbols, | |
3084 | Relocatable_relocs* rr) | |
3085 | { | |
3086 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
3087 | ||
3088 | typedef gold::Default_scan_relocatable_relocs<elfcpp::SHT_RELA, | |
3089 | Relocatable_size_for_reloc> Scan_relocatable_relocs; | |
3090 | ||
3091 | gold::scan_relocatable_relocs<size, big_endian, elfcpp::SHT_RELA, | |
3092 | Scan_relocatable_relocs>( | |
3093 | options, | |
3094 | symtab, | |
3095 | layout, | |
3096 | object, | |
3097 | data_shndx, | |
3098 | prelocs, | |
3099 | reloc_count, | |
3100 | output_section, | |
3101 | needs_special_offset_handling, | |
3102 | local_symbol_count, | |
3103 | plocal_symbols, | |
3104 | rr); | |
3105 | } | |
3106 | ||
3107 | // Relocate a section during a relocatable link. | |
3108 | ||
3109 | template<int size, bool big_endian> | |
3110 | void | |
3111 | Target_sparc<size, big_endian>::relocate_for_relocatable( | |
3112 | const Relocate_info<size, big_endian>* relinfo, | |
3113 | unsigned int sh_type, | |
3114 | const unsigned char* prelocs, | |
3115 | size_t reloc_count, | |
3116 | Output_section* output_section, | |
3117 | off_t offset_in_output_section, | |
3118 | const Relocatable_relocs* rr, | |
3119 | unsigned char* view, | |
3120 | typename elfcpp::Elf_types<size>::Elf_Addr view_address, | |
3121 | section_size_type view_size, | |
3122 | unsigned char* reloc_view, | |
3123 | section_size_type reloc_view_size) | |
3124 | { | |
3125 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
3126 | ||
3127 | gold::relocate_for_relocatable<size, big_endian, elfcpp::SHT_RELA>( | |
3128 | relinfo, | |
3129 | prelocs, | |
3130 | reloc_count, | |
3131 | output_section, | |
3132 | offset_in_output_section, | |
3133 | rr, | |
3134 | view, | |
3135 | view_address, | |
3136 | view_size, | |
3137 | reloc_view, | |
3138 | reloc_view_size); | |
3139 | } | |
3140 | ||
3141 | // Return the value to use for a dynamic which requires special | |
3142 | // treatment. This is how we support equality comparisons of function | |
3143 | // pointers across shared library boundaries, as described in the | |
3144 | // processor specific ABI supplement. | |
3145 | ||
3146 | template<int size, bool big_endian> | |
3147 | uint64_t | |
3148 | Target_sparc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const | |
3149 | { | |
3150 | gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset()); | |
3151 | return this->plt_section()->address() + gsym->plt_offset(); | |
3152 | } | |
3153 | ||
3154 | // The selector for sparc object files. | |
3155 | ||
3156 | template<int size, bool big_endian> | |
3157 | class Target_selector_sparc : public Target_selector | |
3158 | { | |
3159 | public: | |
3160 | Target_selector_sparc() | |
3161 | : Target_selector(elfcpp::EM_NONE, size, big_endian, | |
3162 | (size == 64 ? "elf64-sparc" : "elf32-sparc")) | |
3163 | { } | |
3164 | ||
3165 | Target* instantiated_target_; | |
3166 | ||
3167 | Target* do_recognize(int machine, int, int) | |
3168 | { | |
3169 | switch (size) | |
3170 | { | |
3171 | case 64: | |
3172 | if (machine != elfcpp::EM_SPARCV9) | |
3173 | return NULL; | |
3174 | break; | |
3175 | ||
3176 | case 32: | |
3177 | if (machine != elfcpp::EM_SPARC | |
3178 | && machine != elfcpp::EM_SPARC32PLUS) | |
3179 | return NULL; | |
3180 | break; | |
3181 | ||
3182 | default: | |
3183 | return NULL; | |
3184 | } | |
3185 | ||
3186 | return do_instantiate_target(); | |
3187 | } | |
3188 | ||
3189 | Target* do_instantiate_target() | |
3190 | { | |
3191 | if (this->instantiated_target_ == NULL) | |
3192 | this->instantiated_target_ = new Target_sparc<size, big_endian>(); | |
3193 | return this->instantiated_target_; | |
3194 | } | |
3195 | }; | |
3196 | ||
3197 | Target_selector_sparc<32, true> target_selector_sparc32; | |
3198 | Target_selector_sparc<64, true> target_selector_sparc64; | |
3199 | ||
3200 | } // End anonymous namespace. |