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* object.cc (Xindex::initialize_symtab_xindex): New function.
[deliverable/binutils-gdb.git] / gold / sparc.cc
1 // sparc.cc -- sparc target support for gold.
2
3 // Copyright 2008 Free Software Foundation, Inc.
4 // Written by David S. Miller <davem@davemloft.net>.
5
6 // This file is part of gold.
7
8 // This program is free software; you can redistribute it and/or modify
9 // it under the terms of the GNU General Public License as published by
10 // the Free Software Foundation; either version 3 of the License, or
11 // (at your option) any later version.
12
13 // This program is distributed in the hope that it will be useful,
14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 // GNU General Public License for more details.
17
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the Free Software
20 // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 // MA 02110-1301, USA.
22
23 #include "gold.h"
24
25 #include <cstdlib>
26 #include <cstdio>
27 #include <cstring>
28
29 #include "elfcpp.h"
30 #include "parameters.h"
31 #include "reloc.h"
32 #include "sparc.h"
33 #include "object.h"
34 #include "symtab.h"
35 #include "layout.h"
36 #include "output.h"
37 #include "copy-relocs.h"
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),
61 copy_relocs_(elfcpp::R_SPARC_COPY), dynbss_(NULL),
62 got_mod_index_offset_(-1U), tls_get_addr_sym_(NULL)
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
133 do_is_defined_by_abi(Symbol* sym) const
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.
153 class Scan
154 {
155 public:
156 Scan()
157 : issued_non_pic_error_(false)
158 { }
159
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
178 private:
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);
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_;
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
299 copy_reloc(Symbol_table* symtab, Layout* layout, Relobj* object,
300 unsigned int shndx, Output_section* output_section,
301 Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc)
302 {
303 this->copy_relocs_.copy_reloc(symtab, layout,
304 symtab->get_sized_symbol<size>(sym),
305 object, shndx, output_section,
306 reloc, this->rela_dyn_section(layout));
307 }
308
309 // Information about this specific target which we pass to the
310 // general Target structure.
311 static Target::Target_info sparc_info;
312
313 // The types of GOT entries needed for this platform.
314 enum Got_type
315 {
316 GOT_TYPE_STANDARD = 0, // GOT entry for a regular symbol
317 GOT_TYPE_TLS_OFFSET = 1, // GOT entry for TLS offset
318 GOT_TYPE_TLS_PAIR = 2, // GOT entry for TLS module/offset pair
319 };
320
321 // The GOT section.
322 Output_data_got<size, big_endian>* got_;
323 // The PLT section.
324 Output_data_plt_sparc<size, big_endian>* plt_;
325 // The dynamic reloc section.
326 Reloc_section* rela_dyn_;
327 // Relocs saved to avoid a COPY reloc.
328 Copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_;
329 // Space for variables copied with a COPY reloc.
330 Output_data_space* dynbss_;
331 // Offset of the GOT entry for the TLS module index;
332 unsigned int got_mod_index_offset_;
333 // Cached pointer to __tls_get_addr symbol
334 Symbol* tls_get_addr_sym_;
335 };
336
337 template<>
338 Target::Target_info Target_sparc<32, true>::sparc_info =
339 {
340 32, // size
341 true, // is_big_endian
342 elfcpp::EM_SPARC, // machine_code
343 false, // has_make_symbol
344 false, // has_resolve
345 false, // has_code_fill
346 true, // is_default_stack_executable
347 '\0', // wrap_char
348 "/usr/lib/ld.so.1", // dynamic_linker
349 0x00010000, // default_text_segment_address
350 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
351 8 * 1024 // common_pagesize (overridable by -z common-page-size)
352 };
353
354 template<>
355 Target::Target_info Target_sparc<64, true>::sparc_info =
356 {
357 64, // size
358 true, // is_big_endian
359 elfcpp::EM_SPARCV9, // machine_code
360 false, // has_make_symbol
361 false, // has_resolve
362 false, // has_code_fill
363 true, // is_default_stack_executable
364 '\0', // wrap_char
365 "/usr/lib/sparcv9/ld.so.1", // dynamic_linker
366 0x100000, // default_text_segment_address
367 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
368 8 * 1024 // common_pagesize (overridable by -z common-page-size)
369 };
370
371 // We have to take care here, even when operating in little-endian
372 // mode, sparc instructions are still big endian.
373 template<int size, bool big_endian>
374 class Sparc_relocate_functions
375 {
376 private:
377 // Do a simple relocation with the addend in the relocation.
378 template<int valsize>
379 static inline void
380 rela(unsigned char* view,
381 unsigned int right_shift,
382 typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
383 typename elfcpp::Swap<size, big_endian>::Valtype value,
384 typename elfcpp::Swap<size, big_endian>::Valtype addend)
385 {
386 typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
387 Valtype* wv = reinterpret_cast<Valtype*>(view);
388 Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
389 Valtype reloc = ((value + addend) >> right_shift);
390
391 val &= ~dst_mask;
392 reloc &= dst_mask;
393
394 elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
395 }
396
397 // Do a simple relocation using a symbol value with the addend in
398 // the relocation.
399 template<int valsize>
400 static inline void
401 rela(unsigned char* view,
402 unsigned int right_shift,
403 typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
404 const Sized_relobj<size, big_endian>* object,
405 const Symbol_value<size>* psymval,
406 typename elfcpp::Swap<valsize, big_endian>::Valtype addend)
407 {
408 typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
409 Valtype* wv = reinterpret_cast<Valtype*>(view);
410 Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
411 Valtype reloc = (psymval->value(object, addend) >> right_shift);
412
413 val &= ~dst_mask;
414 reloc &= dst_mask;
415
416 elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
417 }
418
419 // Do a simple relocation using a symbol value with the addend in
420 // the relocation, unaligned.
421 template<int valsize>
422 static inline void
423 rela_ua(unsigned char* view,
424 unsigned int right_shift, elfcpp::Elf_Xword dst_mask,
425 const Sized_relobj<size, big_endian>* object,
426 const Symbol_value<size>* psymval,
427 typename elfcpp::Swap<size, big_endian>::Valtype addend)
428 {
429 typedef typename elfcpp::Swap_unaligned<valsize,
430 big_endian>::Valtype Valtype;
431 unsigned char* wv = view;
432 Valtype val = elfcpp::Swap_unaligned<valsize, big_endian>::readval(wv);
433 Valtype reloc = (psymval->value(object, addend) >> right_shift);
434
435 val &= ~dst_mask;
436 reloc &= dst_mask;
437
438 elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, val | reloc);
439 }
440
441 // Do a simple PC relative relocation with a Symbol_value with the
442 // addend in the relocation.
443 template<int valsize>
444 static inline void
445 pcrela(unsigned char* view,
446 unsigned int right_shift,
447 typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
448 const Sized_relobj<size, big_endian>* object,
449 const Symbol_value<size>* psymval,
450 typename elfcpp::Swap<size, big_endian>::Valtype addend,
451 typename elfcpp::Elf_types<size>::Elf_Addr address)
452 {
453 typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
454 Valtype* wv = reinterpret_cast<Valtype*>(view);
455 Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
456 Valtype reloc = ((psymval->value(object, addend) - address)
457 >> right_shift);
458
459 val &= ~dst_mask;
460 reloc &= dst_mask;
461
462 elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
463 }
464
465 template<int valsize>
466 static inline void
467 pcrela_unaligned(unsigned char* view,
468 const Sized_relobj<size, big_endian>* object,
469 const Symbol_value<size>* psymval,
470 typename elfcpp::Swap<size, big_endian>::Valtype addend,
471 typename elfcpp::Elf_types<size>::Elf_Addr address)
472 {
473 typedef typename elfcpp::Swap_unaligned<valsize,
474 big_endian>::Valtype Valtype;
475 unsigned char* wv = view;
476 Valtype reloc = (psymval->value(object, addend) - address);
477
478 elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, reloc);
479 }
480
481 typedef Sparc_relocate_functions<size, big_endian> This;
482 typedef Sparc_relocate_functions<size, true> This_insn;
483
484 public:
485 // R_SPARC_WDISP30: (Symbol + Addend - Address) >> 2
486 static inline void
487 wdisp30(unsigned char* view,
488 const Sized_relobj<size, big_endian>* object,
489 const Symbol_value<size>* psymval,
490 typename elfcpp::Elf_types<size>::Elf_Addr addend,
491 typename elfcpp::Elf_types<size>::Elf_Addr address)
492 {
493 This_insn::template pcrela<32>(view, 2, 0x3fffffff, object,
494 psymval, addend, address);
495 }
496
497 // R_SPARC_WDISP22: (Symbol + Addend - Address) >> 2
498 static inline void
499 wdisp22(unsigned char* view,
500 const Sized_relobj<size, big_endian>* object,
501 const Symbol_value<size>* psymval,
502 typename elfcpp::Elf_types<size>::Elf_Addr addend,
503 typename elfcpp::Elf_types<size>::Elf_Addr address)
504 {
505 This_insn::template pcrela<32>(view, 2, 0x003fffff, object,
506 psymval, addend, address);
507 }
508
509 // R_SPARC_WDISP19: (Symbol + Addend - Address) >> 2
510 static inline void
511 wdisp19(unsigned char* view,
512 const Sized_relobj<size, big_endian>* object,
513 const Symbol_value<size>* psymval,
514 typename elfcpp::Elf_types<size>::Elf_Addr addend,
515 typename elfcpp::Elf_types<size>::Elf_Addr address)
516 {
517 This_insn::template pcrela<32>(view, 2, 0x0007ffff, object,
518 psymval, addend, address);
519 }
520
521 // R_SPARC_WDISP16: (Symbol + Addend - Address) >> 2
522 static inline void
523 wdisp16(unsigned char* view,
524 const Sized_relobj<size, big_endian>* object,
525 const Symbol_value<size>* psymval,
526 typename elfcpp::Elf_types<size>::Elf_Addr addend,
527 typename elfcpp::Elf_types<size>::Elf_Addr address)
528 {
529 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
530 Valtype* wv = reinterpret_cast<Valtype*>(view);
531 Valtype val = elfcpp::Swap<32, true>::readval(wv);
532 Valtype reloc = ((psymval->value(object, addend) - address)
533 >> 2);
534
535 // The relocation value is split between the low 14 bits,
536 // and bits 20-21.
537 val &= ~((0x3 << 20) | 0x3fff);
538 reloc = (((reloc & 0xc000) << (20 - 14))
539 | (reloc & 0x3ffff));
540
541 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
542 }
543
544 // R_SPARC_PC22: (Symbol + Addend - Address) >> 10
545 static inline void
546 pc22(unsigned char* view,
547 const Sized_relobj<size, big_endian>* object,
548 const Symbol_value<size>* psymval,
549 typename elfcpp::Elf_types<size>::Elf_Addr addend,
550 typename elfcpp::Elf_types<size>::Elf_Addr address)
551 {
552 This_insn::template pcrela<32>(view, 10, 0x003fffff, object,
553 psymval, addend, address);
554 }
555
556 // R_SPARC_PC10: (Symbol + Addend - Address) & 0x3ff
557 static inline void
558 pc10(unsigned char* view,
559 const Sized_relobj<size, big_endian>* object,
560 const Symbol_value<size>* psymval,
561 typename elfcpp::Elf_types<size>::Elf_Addr addend,
562 typename elfcpp::Elf_types<size>::Elf_Addr address)
563 {
564 This_insn::template pcrela<32>(view, 0, 0x000003ff, object,
565 psymval, addend, address);
566 }
567
568 // R_SPARC_HI22: (Symbol + Addend) >> 10
569 static inline void
570 hi22(unsigned char* view,
571 typename elfcpp::Elf_types<size>::Elf_Addr value,
572 typename elfcpp::Elf_types<size>::Elf_Addr addend)
573 {
574 This_insn::template rela<32>(view, 10, 0x003fffff, value, addend);
575 }
576
577 // R_SPARC_HI22: (Symbol + Addend) >> 10
578 static inline void
579 hi22(unsigned char* view,
580 const Sized_relobj<size, big_endian>* object,
581 const Symbol_value<size>* psymval,
582 typename elfcpp::Elf_types<size>::Elf_Addr addend)
583 {
584 This_insn::template rela<32>(view, 10, 0x003fffff, object, psymval, addend);
585 }
586
587 // R_SPARC_PCPLT22: (Symbol + Addend - Address) >> 10
588 static inline void
589 pcplt22(unsigned char* view,
590 const Sized_relobj<size, big_endian>* object,
591 const Symbol_value<size>* psymval,
592 typename elfcpp::Elf_types<size>::Elf_Addr addend,
593 typename elfcpp::Elf_types<size>::Elf_Addr address)
594 {
595 This_insn::template pcrela<32>(view, 10, 0x003fffff, object,
596 psymval, addend, address);
597 }
598
599 // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
600 static inline void
601 lo10(unsigned char* view,
602 typename elfcpp::Elf_types<size>::Elf_Addr value,
603 typename elfcpp::Elf_types<size>::Elf_Addr addend)
604 {
605 This_insn::template rela<32>(view, 0, 0x000003ff, value, addend);
606 }
607
608 // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
609 static inline void
610 lo10(unsigned char* view,
611 const Sized_relobj<size, big_endian>* object,
612 const Symbol_value<size>* psymval,
613 typename elfcpp::Elf_types<size>::Elf_Addr addend)
614 {
615 This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend);
616 }
617
618 // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
619 static inline void
620 lo10(unsigned char* view,
621 const Sized_relobj<size, big_endian>* object,
622 const Symbol_value<size>* psymval,
623 typename elfcpp::Elf_types<size>::Elf_Addr addend,
624 typename elfcpp::Elf_types<size>::Elf_Addr address)
625 {
626 This_insn::template pcrela<32>(view, 0, 0x000003ff, object,
627 psymval, addend, address);
628 }
629
630 // R_SPARC_OLO10: ((Symbol + Addend) & 0x3ff) + Addend2
631 static inline void
632 olo10(unsigned char* view,
633 const Sized_relobj<size, big_endian>* object,
634 const Symbol_value<size>* psymval,
635 typename elfcpp::Elf_types<size>::Elf_Addr addend,
636 typename elfcpp::Elf_types<size>::Elf_Addr addend2)
637 {
638 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
639 Valtype* wv = reinterpret_cast<Valtype*>(view);
640 Valtype val = elfcpp::Swap<32, true>::readval(wv);
641 Valtype reloc = psymval->value(object, addend);
642
643 val &= ~0x1fff;
644 reloc &= 0x3ff;
645 reloc += addend2;
646 reloc &= 0x1fff;
647
648 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
649 }
650
651 // R_SPARC_22: (Symbol + Addend)
652 static inline void
653 rela32_22(unsigned char* view,
654 const Sized_relobj<size, big_endian>* object,
655 const Symbol_value<size>* psymval,
656 typename elfcpp::Elf_types<size>::Elf_Addr addend)
657 {
658 This_insn::template rela<32>(view, 0, 0x003fffff, object, psymval, addend);
659 }
660
661 // R_SPARC_13: (Symbol + Addend)
662 static inline void
663 rela32_13(unsigned char* view,
664 typename elfcpp::Elf_types<size>::Elf_Addr value,
665 typename elfcpp::Elf_types<size>::Elf_Addr addend)
666 {
667 This_insn::template rela<32>(view, 0, 0x00001fff, value, addend);
668 }
669
670 // R_SPARC_13: (Symbol + Addend)
671 static inline void
672 rela32_13(unsigned char* view,
673 const Sized_relobj<size, big_endian>* object,
674 const Symbol_value<size>* psymval,
675 typename elfcpp::Elf_types<size>::Elf_Addr addend)
676 {
677 This_insn::template rela<32>(view, 0, 0x00001fff, object, psymval, addend);
678 }
679
680 // R_SPARC_UA16: (Symbol + Addend)
681 static inline void
682 ua16(unsigned char* view,
683 const Sized_relobj<size, big_endian>* object,
684 const Symbol_value<size>* psymval,
685 typename elfcpp::Elf_types<size>::Elf_Addr addend)
686 {
687 This::template rela_ua<16>(view, 0, 0xffff, object, psymval, addend);
688 }
689
690 // R_SPARC_UA32: (Symbol + Addend)
691 static inline void
692 ua32(unsigned char* view,
693 const Sized_relobj<size, big_endian>* object,
694 const Symbol_value<size>* psymval,
695 typename elfcpp::Elf_types<size>::Elf_Addr addend)
696 {
697 This::template rela_ua<32>(view, 0, 0xffffffff, object, psymval, addend);
698 }
699
700 // R_SPARC_UA64: (Symbol + Addend)
701 static inline void
702 ua64(unsigned char* view,
703 const Sized_relobj<size, big_endian>* object,
704 const Symbol_value<size>* psymval,
705 typename elfcpp::Elf_types<size>::Elf_Addr addend)
706 {
707 This::template rela_ua<64>(view, 0, ~(elfcpp::Elf_Xword) 0,
708 object, psymval, addend);
709 }
710
711 // R_SPARC_DISP8: (Symbol + Addend - Address)
712 static inline void
713 disp8(unsigned char* view,
714 const Sized_relobj<size, big_endian>* object,
715 const Symbol_value<size>* psymval,
716 typename elfcpp::Elf_types<size>::Elf_Addr addend,
717 typename elfcpp::Elf_types<size>::Elf_Addr address)
718 {
719 This::template pcrela_unaligned<8>(view, object, psymval,
720 addend, address);
721 }
722
723 // R_SPARC_DISP16: (Symbol + Addend - Address)
724 static inline void
725 disp16(unsigned char* view,
726 const Sized_relobj<size, big_endian>* object,
727 const Symbol_value<size>* psymval,
728 typename elfcpp::Elf_types<size>::Elf_Addr addend,
729 typename elfcpp::Elf_types<size>::Elf_Addr address)
730 {
731 This::template pcrela_unaligned<16>(view, object, psymval,
732 addend, address);
733 }
734
735 // R_SPARC_DISP32: (Symbol + Addend - Address)
736 static inline void
737 disp32(unsigned char* view,
738 const Sized_relobj<size, big_endian>* object,
739 const Symbol_value<size>* psymval,
740 typename elfcpp::Elf_types<size>::Elf_Addr addend,
741 typename elfcpp::Elf_types<size>::Elf_Addr address)
742 {
743 This::template pcrela_unaligned<32>(view, object, psymval,
744 addend, address);
745 }
746
747 // R_SPARC_DISP64: (Symbol + Addend - Address)
748 static inline void
749 disp64(unsigned char* view,
750 const Sized_relobj<size, big_endian>* object,
751 const Symbol_value<size>* psymval,
752 elfcpp::Elf_Xword addend,
753 typename elfcpp::Elf_types<size>::Elf_Addr address)
754 {
755 This::template pcrela_unaligned<64>(view, object, psymval,
756 addend, address);
757 }
758
759 // R_SPARC_H44: (Symbol + Addend) >> 22
760 static inline void
761 h44(unsigned char* view,
762 const Sized_relobj<size, big_endian>* object,
763 const Symbol_value<size>* psymval,
764 typename elfcpp::Elf_types<size>::Elf_Addr addend)
765 {
766 This_insn::template rela<32>(view, 22, 0x003fffff, object, psymval, addend);
767 }
768
769 // R_SPARC_M44: ((Symbol + Addend) >> 12) & 0x3ff
770 static inline void
771 m44(unsigned char* view,
772 const Sized_relobj<size, big_endian>* object,
773 const Symbol_value<size>* psymval,
774 typename elfcpp::Elf_types<size>::Elf_Addr addend)
775 {
776 This_insn::template rela<32>(view, 12, 0x000003ff, object, psymval, addend);
777 }
778
779 // R_SPARC_L44: (Symbol + Addend) & 0xfff
780 static inline void
781 l44(unsigned char* view,
782 const Sized_relobj<size, big_endian>* object,
783 const Symbol_value<size>* psymval,
784 typename elfcpp::Elf_types<size>::Elf_Addr addend)
785 {
786 This_insn::template rela<32>(view, 0, 0x00000fff, object, psymval, addend);
787 }
788
789 // R_SPARC_HH22: (Symbol + Addend) >> 42
790 static inline void
791 hh22(unsigned char* view,
792 const Sized_relobj<size, big_endian>* object,
793 const Symbol_value<size>* psymval,
794 typename elfcpp::Elf_types<size>::Elf_Addr addend)
795 {
796 This_insn::template rela<32>(view, 42, 0x003fffff, object, psymval, addend);
797 }
798
799 // R_SPARC_PC_HH22: (Symbol + Addend - Address) >> 42
800 static inline void
801 pc_hh22(unsigned char* view,
802 const Sized_relobj<size, big_endian>* object,
803 const Symbol_value<size>* psymval,
804 typename elfcpp::Elf_types<size>::Elf_Addr addend,
805 typename elfcpp::Elf_types<size>::Elf_Addr address)
806 {
807 This_insn::template pcrela<32>(view, 42, 0x003fffff, object,
808 psymval, addend, address);
809 }
810
811 // R_SPARC_HM10: ((Symbol + Addend) >> 32) & 0x3ff
812 static inline void
813 hm10(unsigned char* view,
814 const Sized_relobj<size, big_endian>* object,
815 const Symbol_value<size>* psymval,
816 typename elfcpp::Elf_types<size>::Elf_Addr addend)
817 {
818 This_insn::template rela<32>(view, 32, 0x000003ff, object, psymval, addend);
819 }
820
821 // R_SPARC_PC_HM10: ((Symbol + Addend - Address) >> 32) & 0x3ff
822 static inline void
823 pc_hm10(unsigned char* view,
824 const Sized_relobj<size, big_endian>* object,
825 const Symbol_value<size>* psymval,
826 typename elfcpp::Elf_types<size>::Elf_Addr addend,
827 typename elfcpp::Elf_types<size>::Elf_Addr address)
828 {
829 This_insn::template pcrela<32>(view, 32, 0x000003ff, object,
830 psymval, addend, address);
831 }
832
833 // R_SPARC_11: (Symbol + Addend)
834 static inline void
835 rela32_11(unsigned char* view,
836 const Sized_relobj<size, big_endian>* object,
837 const Symbol_value<size>* psymval,
838 typename elfcpp::Elf_types<size>::Elf_Addr addend)
839 {
840 This_insn::template rela<32>(view, 0, 0x000007ff, object, psymval, addend);
841 }
842
843 // R_SPARC_10: (Symbol + Addend)
844 static inline void
845 rela32_10(unsigned char* view,
846 const Sized_relobj<size, big_endian>* object,
847 const Symbol_value<size>* psymval,
848 typename elfcpp::Elf_types<size>::Elf_Addr addend)
849 {
850 This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend);
851 }
852
853 // R_SPARC_7: (Symbol + Addend)
854 static inline void
855 rela32_7(unsigned char* view,
856 const Sized_relobj<size, big_endian>* object,
857 const Symbol_value<size>* psymval,
858 typename elfcpp::Elf_types<size>::Elf_Addr addend)
859 {
860 This_insn::template rela<32>(view, 0, 0x0000007f, object, psymval, addend);
861 }
862
863 // R_SPARC_6: (Symbol + Addend)
864 static inline void
865 rela32_6(unsigned char* view,
866 const Sized_relobj<size, big_endian>* object,
867 const Symbol_value<size>* psymval,
868 typename elfcpp::Elf_types<size>::Elf_Addr addend)
869 {
870 This_insn::template rela<32>(view, 0, 0x0000003f, object, psymval, addend);
871 }
872
873 // R_SPARC_5: (Symbol + Addend)
874 static inline void
875 rela32_5(unsigned char* view,
876 const Sized_relobj<size, big_endian>* object,
877 const Symbol_value<size>* psymval,
878 typename elfcpp::Elf_types<size>::Elf_Addr addend)
879 {
880 This_insn::template rela<32>(view, 0, 0x0000001f, object, psymval, addend);
881 }
882
883 // R_SPARC_TLS_LDO_HIX22: @dtpoff(Symbol + Addend) >> 10
884 static inline void
885 ldo_hix22(unsigned char* view,
886 typename elfcpp::Elf_types<size>::Elf_Addr value,
887 typename elfcpp::Elf_types<size>::Elf_Addr addend)
888 {
889 This_insn::hi22(view, value, addend);
890 }
891
892 // R_SPARC_TLS_LDO_LOX10: @dtpoff(Symbol + Addend) & 0x3ff
893 static inline void
894 ldo_lox10(unsigned char* view,
895 typename elfcpp::Elf_types<size>::Elf_Addr value,
896 typename elfcpp::Elf_types<size>::Elf_Addr addend)
897 {
898 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
899 Valtype* wv = reinterpret_cast<Valtype*>(view);
900 Valtype val = elfcpp::Swap<32, true>::readval(wv);
901 Valtype reloc = (value + addend);
902
903 val &= ~0x1fff;
904 reloc &= 0x3ff;
905
906 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
907 }
908
909 // R_SPARC_TLS_LE_HIX22: (@tpoff(Symbol + Addend) ^ 0xffffffffffffffff) >> 10
910 static inline void
911 hix22(unsigned char* view,
912 typename elfcpp::Elf_types<size>::Elf_Addr value,
913 typename elfcpp::Elf_types<size>::Elf_Addr addend)
914 {
915 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
916 Valtype* wv = reinterpret_cast<Valtype*>(view);
917 Valtype val = elfcpp::Swap<32, true>::readval(wv);
918 Valtype reloc = (value + addend);
919
920 val &= ~0x3fffff;
921
922 reloc ^= ~(Valtype)0;
923 reloc >>= 10;
924
925 reloc &= 0x3fffff;
926
927 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
928 }
929
930 // R_SPARC_HIX22: ((Symbol + Addend) ^ 0xffffffffffffffff) >> 10
931 static inline void
932 hix22(unsigned char* view,
933 const Sized_relobj<size, big_endian>* object,
934 const Symbol_value<size>* psymval,
935 typename elfcpp::Elf_types<size>::Elf_Addr addend)
936 {
937 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
938 Valtype* wv = reinterpret_cast<Valtype*>(view);
939 Valtype val = elfcpp::Swap<32, true>::readval(wv);
940 Valtype reloc = psymval->value(object, addend);
941
942 val &= ~0x3fffff;
943
944 reloc ^= ~(Valtype)0;
945 reloc >>= 10;
946
947 reloc &= 0x3fffff;
948
949 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
950 }
951
952
953 // R_SPARC_TLS_LE_LOX10: (@tpoff(Symbol + Addend) & 0x3ff) | 0x1c00
954 static inline void
955 lox10(unsigned char* view,
956 typename elfcpp::Elf_types<size>::Elf_Addr value,
957 typename elfcpp::Elf_types<size>::Elf_Addr addend)
958 {
959 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
960 Valtype* wv = reinterpret_cast<Valtype*>(view);
961 Valtype val = elfcpp::Swap<32, true>::readval(wv);
962 Valtype reloc = (value + addend);
963
964 val &= ~0x1fff;
965 reloc &= 0x3ff;
966 reloc |= 0x1c00;
967
968 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
969 }
970
971 // R_SPARC_LOX10: ((Symbol + Addend) & 0x3ff) | 0x1c00
972 static inline void
973 lox10(unsigned char* view,
974 const Sized_relobj<size, big_endian>* object,
975 const Symbol_value<size>* psymval,
976 typename elfcpp::Elf_types<size>::Elf_Addr addend)
977 {
978 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
979 Valtype* wv = reinterpret_cast<Valtype*>(view);
980 Valtype val = elfcpp::Swap<32, true>::readval(wv);
981 Valtype reloc = psymval->value(object, addend);
982
983 val &= ~0x1fff;
984 reloc &= 0x3ff;
985 reloc |= 0x1c00;
986
987 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
988 }
989 };
990
991 // Get the GOT section, creating it if necessary.
992
993 template<int size, bool big_endian>
994 Output_data_got<size, big_endian>*
995 Target_sparc<size, big_endian>::got_section(Symbol_table* symtab,
996 Layout* layout)
997 {
998 if (this->got_ == NULL)
999 {
1000 gold_assert(symtab != NULL && layout != NULL);
1001
1002 this->got_ = new Output_data_got<size, big_endian>();
1003
1004 layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS,
1005 elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE,
1006 this->got_);
1007
1008 // Define _GLOBAL_OFFSET_TABLE_ at the start of the .got section.
1009 symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL,
1010 this->got_,
1011 0, 0, elfcpp::STT_OBJECT,
1012 elfcpp::STB_LOCAL,
1013 elfcpp::STV_HIDDEN, 0,
1014 false, false);
1015 }
1016
1017 return this->got_;
1018 }
1019
1020 // Get the dynamic reloc section, creating it if necessary.
1021
1022 template<int size, bool big_endian>
1023 typename Target_sparc<size, big_endian>::Reloc_section*
1024 Target_sparc<size, big_endian>::rela_dyn_section(Layout* layout)
1025 {
1026 if (this->rela_dyn_ == NULL)
1027 {
1028 gold_assert(layout != NULL);
1029 this->rela_dyn_ = new Reloc_section();
1030 layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA,
1031 elfcpp::SHF_ALLOC, this->rela_dyn_);
1032 }
1033 return this->rela_dyn_;
1034 }
1035
1036 // A class to handle the PLT data.
1037
1038 template<int size, bool big_endian>
1039 class Output_data_plt_sparc : public Output_section_data
1040 {
1041 public:
1042 typedef Output_data_reloc<elfcpp::SHT_RELA, true,
1043 size, big_endian> Reloc_section;
1044
1045 Output_data_plt_sparc(Layout*);
1046
1047 // Add an entry to the PLT.
1048 void add_entry(Symbol* gsym);
1049
1050 // Return the .rela.plt section data.
1051 const Reloc_section* rel_plt() const
1052 {
1053 return this->rel_;
1054 }
1055
1056 protected:
1057 void do_adjust_output_section(Output_section* os);
1058
1059 private:
1060 // The size of an entry in the PLT.
1061 static const int base_plt_entry_size = (size == 32 ? 12 : 32);
1062
1063 static const unsigned int plt_entries_per_block = 160;
1064 static const unsigned int plt_insn_chunk_size = 24;
1065 static const unsigned int plt_pointer_chunk_size = 8;
1066 static const unsigned int plt_block_size =
1067 (plt_entries_per_block
1068 * (plt_insn_chunk_size + plt_pointer_chunk_size));
1069
1070 // Set the final size.
1071 void
1072 set_final_data_size()
1073 {
1074 unsigned int full_count = this->count_ + 4;
1075 unsigned int extra = (size == 32 ? 4 : 0);
1076
1077 if (size == 32 || full_count < 32768)
1078 this->set_data_size((full_count * base_plt_entry_size) + extra);
1079 else
1080 {
1081 unsigned int ext_cnt = full_count - 32768;
1082
1083 this->set_data_size((32768 * base_plt_entry_size)
1084 + (ext_cnt
1085 * (plt_insn_chunk_size
1086 + plt_pointer_chunk_size)));
1087 }
1088 }
1089
1090 // Write out the PLT data.
1091 void
1092 do_write(Output_file*);
1093
1094 // The reloc section.
1095 Reloc_section* rel_;
1096 // The number of PLT entries.
1097 unsigned int count_;
1098 };
1099
1100 // Define the constants as required by C++ standard.
1101
1102 template<int size, bool big_endian>
1103 const int Output_data_plt_sparc<size, big_endian>::base_plt_entry_size;
1104
1105 template<int size, bool big_endian>
1106 const unsigned int
1107 Output_data_plt_sparc<size, big_endian>::plt_entries_per_block;
1108
1109 template<int size, bool big_endian>
1110 const unsigned int Output_data_plt_sparc<size, big_endian>::plt_insn_chunk_size;
1111
1112 template<int size, bool big_endian>
1113 const unsigned int
1114 Output_data_plt_sparc<size, big_endian>::plt_pointer_chunk_size;
1115
1116 template<int size, bool big_endian>
1117 const unsigned int Output_data_plt_sparc<size, big_endian>::plt_block_size;
1118
1119 // Create the PLT section. The ordinary .got section is an argument,
1120 // since we need to refer to the start.
1121
1122 template<int size, bool big_endian>
1123 Output_data_plt_sparc<size, big_endian>::Output_data_plt_sparc(Layout* layout)
1124 : Output_section_data(size == 32 ? 4 : 8), count_(0)
1125 {
1126 this->rel_ = new Reloc_section();
1127 layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA,
1128 elfcpp::SHF_ALLOC, this->rel_);
1129 }
1130
1131 template<int size, bool big_endian>
1132 void
1133 Output_data_plt_sparc<size, big_endian>::do_adjust_output_section(Output_section* os)
1134 {
1135 os->set_entsize(0);
1136 }
1137
1138 // Add an entry to the PLT.
1139
1140 template<int size, bool big_endian>
1141 void
1142 Output_data_plt_sparc<size, big_endian>::add_entry(Symbol* gsym)
1143 {
1144 gold_assert(!gsym->has_plt_offset());
1145
1146 unsigned int index = this->count_ + 4;
1147 section_offset_type plt_offset;
1148
1149 if (size == 32 || index < 32768)
1150 plt_offset = index * base_plt_entry_size;
1151 else
1152 {
1153 unsigned int ext_index = index - 32768;
1154
1155 plt_offset = (32768 * base_plt_entry_size)
1156 + ((ext_index / plt_entries_per_block)
1157 * plt_block_size)
1158 + ((ext_index % plt_entries_per_block)
1159 * plt_insn_chunk_size);
1160 }
1161
1162 gsym->set_plt_offset(plt_offset);
1163
1164 ++this->count_;
1165
1166 // Every PLT entry needs a reloc.
1167 gsym->set_needs_dynsym_entry();
1168 this->rel_->add_global(gsym, elfcpp::R_SPARC_JMP_SLOT, this,
1169 plt_offset, 0);
1170
1171 // Note that we don't need to save the symbol. The contents of the
1172 // PLT are independent of which symbols are used. The symbols only
1173 // appear in the relocations.
1174 }
1175
1176 static const unsigned int sparc_nop = 0x01000000;
1177 static const unsigned int sparc_sethi_g1 = 0x03000000;
1178 static const unsigned int sparc_branch_always = 0x30800000;
1179 static const unsigned int sparc_branch_always_pt = 0x30680000;
1180 static const unsigned int sparc_mov = 0x80100000;
1181 static const unsigned int sparc_mov_g0_o0 = 0x90100000;
1182 static const unsigned int sparc_mov_o7_g5 = 0x8a10000f;
1183 static const unsigned int sparc_call_plus_8 = 0x40000002;
1184 static const unsigned int sparc_ldx_o7_imm_g1 = 0xc25be000;
1185 static const unsigned int sparc_jmpl_o7_g1_g1 = 0x83c3c001;
1186 static const unsigned int sparc_mov_g5_o7 = 0x9e100005;
1187
1188 // Write out the PLT.
1189
1190 template<int size, bool big_endian>
1191 void
1192 Output_data_plt_sparc<size, big_endian>::do_write(Output_file* of)
1193 {
1194 const off_t offset = this->offset();
1195 const section_size_type oview_size =
1196 convert_to_section_size_type(this->data_size());
1197 unsigned char* const oview = of->get_output_view(offset, oview_size);
1198 unsigned char* pov = oview;
1199
1200 memset(pov, 0, base_plt_entry_size * 4);
1201 pov += base_plt_entry_size * 4;
1202
1203 unsigned int plt_offset = base_plt_entry_size * 4;
1204 const unsigned int count = this->count_;
1205
1206 if (size == 64)
1207 {
1208 unsigned int limit;
1209
1210 limit = (count > 32768 ? 32768 : count);
1211
1212 for (unsigned int i = 0; i < limit; ++i)
1213 {
1214 elfcpp::Swap<32, true>::writeval(pov + 0x00,
1215 sparc_sethi_g1 + plt_offset);
1216 elfcpp::Swap<32, true>::writeval(pov + 0x04,
1217 sparc_branch_always_pt +
1218 (((base_plt_entry_size -
1219 (plt_offset + 4)) >> 2) &
1220 0x7ffff));
1221 elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop);
1222 elfcpp::Swap<32, true>::writeval(pov + 0x0c, sparc_nop);
1223 elfcpp::Swap<32, true>::writeval(pov + 0x10, sparc_nop);
1224 elfcpp::Swap<32, true>::writeval(pov + 0x14, sparc_nop);
1225 elfcpp::Swap<32, true>::writeval(pov + 0x18, sparc_nop);
1226 elfcpp::Swap<32, true>::writeval(pov + 0x1c, sparc_nop);
1227
1228 pov += base_plt_entry_size;
1229 plt_offset += base_plt_entry_size;
1230 }
1231
1232 if (count > 32768)
1233 {
1234 unsigned int ext_cnt = count - 32768;
1235 unsigned int blks = ext_cnt / plt_entries_per_block;
1236
1237 for (unsigned int i = 0; i < blks; ++i)
1238 {
1239 unsigned int data_off = (plt_entries_per_block
1240 * plt_insn_chunk_size) - 4;
1241
1242 for (unsigned int j = 0; j < plt_entries_per_block; ++j)
1243 {
1244 elfcpp::Swap<32, true>::writeval(pov + 0x00,
1245 sparc_mov_o7_g5);
1246 elfcpp::Swap<32, true>::writeval(pov + 0x04,
1247 sparc_call_plus_8);
1248 elfcpp::Swap<32, true>::writeval(pov + 0x08,
1249 sparc_nop);
1250 elfcpp::Swap<32, true>::writeval(pov + 0x0c,
1251 sparc_ldx_o7_imm_g1 +
1252 (data_off & 0x1fff));
1253 elfcpp::Swap<32, true>::writeval(pov + 0x10,
1254 sparc_jmpl_o7_g1_g1);
1255 elfcpp::Swap<32, true>::writeval(pov + 0x14,
1256 sparc_mov_g5_o7);
1257
1258 elfcpp::Swap<64, big_endian>::writeval(
1259 pov + 0x4 + data_off,
1260 (elfcpp::Elf_Xword) (oview - (pov + 0x04)));
1261
1262 pov += plt_insn_chunk_size;
1263 data_off -= 16;
1264 }
1265 }
1266
1267 unsigned int sub_blk_cnt = ext_cnt % plt_entries_per_block;
1268 for (unsigned int i = 0; i < sub_blk_cnt; ++i)
1269 {
1270 unsigned int data_off = (sub_blk_cnt
1271 * plt_insn_chunk_size) - 4;
1272
1273 for (unsigned int j = 0; j < plt_entries_per_block; ++j)
1274 {
1275 elfcpp::Swap<32, true>::writeval(pov + 0x00,
1276 sparc_mov_o7_g5);
1277 elfcpp::Swap<32, true>::writeval(pov + 0x04,
1278 sparc_call_plus_8);
1279 elfcpp::Swap<32, true>::writeval(pov + 0x08,
1280 sparc_nop);
1281 elfcpp::Swap<32, true>::writeval(pov + 0x0c,
1282 sparc_ldx_o7_imm_g1 +
1283 (data_off & 0x1fff));
1284 elfcpp::Swap<32, true>::writeval(pov + 0x10,
1285 sparc_jmpl_o7_g1_g1);
1286 elfcpp::Swap<32, true>::writeval(pov + 0x14,
1287 sparc_mov_g5_o7);
1288
1289 elfcpp::Swap<64, big_endian>::writeval(
1290 pov + 0x4 + data_off,
1291 (elfcpp::Elf_Xword) (oview - (pov + 0x04)));
1292
1293 pov += plt_insn_chunk_size;
1294 data_off -= 16;
1295 }
1296 }
1297 }
1298 }
1299 else
1300 {
1301 for (unsigned int i = 0; i < count; ++i)
1302 {
1303 elfcpp::Swap<32, true>::writeval(pov + 0x00,
1304 sparc_sethi_g1 + plt_offset);
1305 elfcpp::Swap<32, true>::writeval(pov + 0x04,
1306 sparc_branch_always +
1307 (((- (plt_offset + 4)) >> 2) &
1308 0x003fffff));
1309 elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop);
1310
1311 pov += base_plt_entry_size;
1312 plt_offset += base_plt_entry_size;
1313 }
1314
1315 elfcpp::Swap<32, true>::writeval(pov, sparc_nop);
1316 pov += 4;
1317 }
1318
1319 gold_assert(static_cast<section_size_type>(pov - oview) == oview_size);
1320
1321 of->write_output_view(offset, oview_size, oview);
1322 }
1323
1324 // Create a PLT entry for a global symbol.
1325
1326 template<int size, bool big_endian>
1327 void
1328 Target_sparc<size, big_endian>::make_plt_entry(Symbol_table* symtab,
1329 Layout* layout,
1330 Symbol* gsym)
1331 {
1332 if (gsym->has_plt_offset())
1333 return;
1334
1335 if (this->plt_ == NULL)
1336 {
1337 // Create the GOT sections first.
1338 this->got_section(symtab, layout);
1339
1340 this->plt_ = new Output_data_plt_sparc<size, big_endian>(layout);
1341 layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS,
1342 (elfcpp::SHF_ALLOC
1343 | elfcpp::SHF_EXECINSTR
1344 | elfcpp::SHF_WRITE),
1345 this->plt_);
1346
1347 // Define _PROCEDURE_LINKAGE_TABLE_ at the start of the .plt section.
1348 symtab->define_in_output_data("_PROCEDURE_LINKAGE_TABLE_", NULL,
1349 this->plt_,
1350 0, 0, elfcpp::STT_OBJECT,
1351 elfcpp::STB_LOCAL,
1352 elfcpp::STV_HIDDEN, 0,
1353 false, false);
1354 }
1355
1356 this->plt_->add_entry(gsym);
1357 }
1358
1359 // Create a GOT entry for the TLS module index.
1360
1361 template<int size, bool big_endian>
1362 unsigned int
1363 Target_sparc<size, big_endian>::got_mod_index_entry(Symbol_table* symtab,
1364 Layout* layout,
1365 Sized_relobj<size, big_endian>* object)
1366 {
1367 if (this->got_mod_index_offset_ == -1U)
1368 {
1369 gold_assert(symtab != NULL && layout != NULL && object != NULL);
1370 Reloc_section* rela_dyn = this->rela_dyn_section(layout);
1371 Output_data_got<size, big_endian>* got;
1372 unsigned int got_offset;
1373
1374 got = this->got_section(symtab, layout);
1375 got_offset = got->add_constant(0);
1376 rela_dyn->add_local(object, 0,
1377 (size == 64 ?
1378 elfcpp::R_SPARC_TLS_DTPMOD64 :
1379 elfcpp::R_SPARC_TLS_DTPMOD32), got,
1380 got_offset, 0);
1381 got->add_constant(0);
1382 this->got_mod_index_offset_ = got_offset;
1383 }
1384 return this->got_mod_index_offset_;
1385 }
1386
1387 // Optimize the TLS relocation type based on what we know about the
1388 // symbol. IS_FINAL is true if the final address of this symbol is
1389 // known at link time.
1390
1391 static tls::Tls_optimization
1392 optimize_tls_reloc(bool is_final, int r_type)
1393 {
1394 // If we are generating a shared library, then we can't do anything
1395 // in the linker.
1396 if (parameters->options().shared())
1397 return tls::TLSOPT_NONE;
1398
1399 switch (r_type)
1400 {
1401 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1402 case elfcpp::R_SPARC_TLS_GD_LO10:
1403 case elfcpp::R_SPARC_TLS_GD_ADD:
1404 case elfcpp::R_SPARC_TLS_GD_CALL:
1405 // These are General-Dynamic which permits fully general TLS
1406 // access. Since we know that we are generating an executable,
1407 // we can convert this to Initial-Exec. If we also know that
1408 // this is a local symbol, we can further switch to Local-Exec.
1409 if (is_final)
1410 return tls::TLSOPT_TO_LE;
1411 return tls::TLSOPT_TO_IE;
1412
1413 case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic
1414 case elfcpp::R_SPARC_TLS_LDM_LO10:
1415 case elfcpp::R_SPARC_TLS_LDM_ADD:
1416 case elfcpp::R_SPARC_TLS_LDM_CALL:
1417 // This is Local-Dynamic, which refers to a local symbol in the
1418 // dynamic TLS block. Since we know that we generating an
1419 // executable, we can switch to Local-Exec.
1420 return tls::TLSOPT_TO_LE;
1421
1422 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
1423 case elfcpp::R_SPARC_TLS_LDO_LOX10:
1424 case elfcpp::R_SPARC_TLS_LDO_ADD:
1425 // Another type of Local-Dynamic relocation.
1426 return tls::TLSOPT_TO_LE;
1427
1428 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
1429 case elfcpp::R_SPARC_TLS_IE_LO10:
1430 case elfcpp::R_SPARC_TLS_IE_LD:
1431 case elfcpp::R_SPARC_TLS_IE_LDX:
1432 // These are Initial-Exec relocs which get the thread offset
1433 // from the GOT. If we know that we are linking against the
1434 // local symbol, we can switch to Local-Exec, which links the
1435 // thread offset into the instruction.
1436 if (is_final)
1437 return tls::TLSOPT_TO_LE;
1438 return tls::TLSOPT_NONE;
1439
1440 case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec
1441 case elfcpp::R_SPARC_TLS_LE_LOX10:
1442 // When we already have Local-Exec, there is nothing further we
1443 // can do.
1444 return tls::TLSOPT_NONE;
1445
1446 default:
1447 gold_unreachable();
1448 }
1449 }
1450
1451 // Generate a PLT entry slot for a call to __tls_get_addr
1452 template<int size, bool big_endian>
1453 void
1454 Target_sparc<size, big_endian>::Scan::generate_tls_call(Symbol_table* symtab,
1455 Layout* layout,
1456 Target_sparc<size, big_endian>* target)
1457 {
1458 Symbol* gsym = target->tls_get_addr_sym(symtab);
1459
1460 target->make_plt_entry(symtab, layout, gsym);
1461 }
1462
1463 // Report an unsupported relocation against a local symbol.
1464
1465 template<int size, bool big_endian>
1466 void
1467 Target_sparc<size, big_endian>::Scan::unsupported_reloc_local(
1468 Sized_relobj<size, big_endian>* object,
1469 unsigned int r_type)
1470 {
1471 gold_error(_("%s: unsupported reloc %u against local symbol"),
1472 object->name().c_str(), r_type);
1473 }
1474
1475 // We are about to emit a dynamic relocation of type R_TYPE. If the
1476 // dynamic linker does not support it, issue an error.
1477
1478 template<int size, bool big_endian>
1479 void
1480 Target_sparc<size, big_endian>::Scan::check_non_pic(Relobj* object, unsigned int r_type)
1481 {
1482 gold_assert(r_type != elfcpp::R_SPARC_NONE);
1483
1484 if (size == 64)
1485 {
1486 switch (r_type)
1487 {
1488 // These are the relocation types supported by glibc for sparc 64-bit.
1489 case elfcpp::R_SPARC_RELATIVE:
1490 case elfcpp::R_SPARC_COPY:
1491 case elfcpp::R_SPARC_64:
1492 case elfcpp::R_SPARC_GLOB_DAT:
1493 case elfcpp::R_SPARC_JMP_SLOT:
1494 case elfcpp::R_SPARC_TLS_DTPMOD64:
1495 case elfcpp::R_SPARC_TLS_DTPOFF64:
1496 case elfcpp::R_SPARC_TLS_TPOFF64:
1497 case elfcpp::R_SPARC_TLS_LE_HIX22:
1498 case elfcpp::R_SPARC_TLS_LE_LOX10:
1499 case elfcpp::R_SPARC_8:
1500 case elfcpp::R_SPARC_16:
1501 case elfcpp::R_SPARC_DISP8:
1502 case elfcpp::R_SPARC_DISP16:
1503 case elfcpp::R_SPARC_DISP32:
1504 case elfcpp::R_SPARC_WDISP30:
1505 case elfcpp::R_SPARC_LO10:
1506 case elfcpp::R_SPARC_HI22:
1507 case elfcpp::R_SPARC_OLO10:
1508 case elfcpp::R_SPARC_H44:
1509 case elfcpp::R_SPARC_M44:
1510 case elfcpp::R_SPARC_L44:
1511 case elfcpp::R_SPARC_HH22:
1512 case elfcpp::R_SPARC_HM10:
1513 case elfcpp::R_SPARC_LM22:
1514 case elfcpp::R_SPARC_UA16:
1515 case elfcpp::R_SPARC_UA32:
1516 case elfcpp::R_SPARC_UA64:
1517 return;
1518
1519 default:
1520 break;
1521 }
1522 }
1523 else
1524 {
1525 switch (r_type)
1526 {
1527 // These are the relocation types supported by glibc for sparc 32-bit.
1528 case elfcpp::R_SPARC_RELATIVE:
1529 case elfcpp::R_SPARC_COPY:
1530 case elfcpp::R_SPARC_GLOB_DAT:
1531 case elfcpp::R_SPARC_32:
1532 case elfcpp::R_SPARC_JMP_SLOT:
1533 case elfcpp::R_SPARC_TLS_DTPMOD32:
1534 case elfcpp::R_SPARC_TLS_DTPOFF32:
1535 case elfcpp::R_SPARC_TLS_TPOFF32:
1536 case elfcpp::R_SPARC_TLS_LE_HIX22:
1537 case elfcpp::R_SPARC_TLS_LE_LOX10:
1538 case elfcpp::R_SPARC_8:
1539 case elfcpp::R_SPARC_16:
1540 case elfcpp::R_SPARC_DISP8:
1541 case elfcpp::R_SPARC_DISP16:
1542 case elfcpp::R_SPARC_DISP32:
1543 case elfcpp::R_SPARC_LO10:
1544 case elfcpp::R_SPARC_WDISP30:
1545 case elfcpp::R_SPARC_HI22:
1546 case elfcpp::R_SPARC_UA16:
1547 case elfcpp::R_SPARC_UA32:
1548 return;
1549
1550 default:
1551 break;
1552 }
1553 }
1554
1555 // This prevents us from issuing more than one error per reloc
1556 // section. But we can still wind up issuing more than one
1557 // error per object file.
1558 if (this->issued_non_pic_error_)
1559 return;
1560 object->error(_("requires unsupported dynamic reloc; "
1561 "recompile with -fPIC"));
1562 this->issued_non_pic_error_ = true;
1563 return;
1564 }
1565
1566 // Scan a relocation for a local symbol.
1567
1568 template<int size, bool big_endian>
1569 inline void
1570 Target_sparc<size, big_endian>::Scan::local(
1571 const General_options&,
1572 Symbol_table* symtab,
1573 Layout* layout,
1574 Target_sparc<size, big_endian>* target,
1575 Sized_relobj<size, big_endian>* object,
1576 unsigned int data_shndx,
1577 Output_section* output_section,
1578 const elfcpp::Rela<size, big_endian>& reloc,
1579 unsigned int r_type,
1580 const elfcpp::Sym<size, big_endian>& lsym)
1581 {
1582 unsigned int orig_r_type = r_type;
1583
1584 r_type &= 0xff;
1585 switch (r_type)
1586 {
1587 case elfcpp::R_SPARC_NONE:
1588 case elfcpp::R_SPARC_REGISTER:
1589 case elfcpp::R_SPARC_GNU_VTINHERIT:
1590 case elfcpp::R_SPARC_GNU_VTENTRY:
1591 break;
1592
1593 case elfcpp::R_SPARC_64:
1594 case elfcpp::R_SPARC_32:
1595 // If building a shared library (or a position-independent
1596 // executable), we need to create a dynamic relocation for
1597 // this location. The relocation applied at link time will
1598 // apply the link-time value, so we flag the location with
1599 // an R_SPARC_RELATIVE relocation so the dynamic loader can
1600 // relocate it easily.
1601 if (parameters->options().output_is_position_independent())
1602 {
1603 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1604 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1605 rela_dyn->add_local_relative(object, r_sym, elfcpp::R_SPARC_RELATIVE,
1606 output_section, data_shndx,
1607 reloc.get_r_offset(),
1608 reloc.get_r_addend());
1609 }
1610 break;
1611
1612 case elfcpp::R_SPARC_HIX22:
1613 case elfcpp::R_SPARC_LOX10:
1614 case elfcpp::R_SPARC_H44:
1615 case elfcpp::R_SPARC_M44:
1616 case elfcpp::R_SPARC_L44:
1617 case elfcpp::R_SPARC_HH22:
1618 case elfcpp::R_SPARC_HM10:
1619 case elfcpp::R_SPARC_LM22:
1620 case elfcpp::R_SPARC_UA64:
1621 case elfcpp::R_SPARC_UA32:
1622 case elfcpp::R_SPARC_UA16:
1623 case elfcpp::R_SPARC_HI22:
1624 case elfcpp::R_SPARC_LO10:
1625 case elfcpp::R_SPARC_OLO10:
1626 case elfcpp::R_SPARC_16:
1627 case elfcpp::R_SPARC_11:
1628 case elfcpp::R_SPARC_10:
1629 case elfcpp::R_SPARC_8:
1630 case elfcpp::R_SPARC_7:
1631 case elfcpp::R_SPARC_6:
1632 case elfcpp::R_SPARC_5:
1633 // If building a shared library (or a position-independent
1634 // executable), we need to create a dynamic relocation for
1635 // this location.
1636 if (parameters->options().output_is_position_independent())
1637 {
1638 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1639
1640 check_non_pic(object, r_type);
1641 if (lsym.get_st_type() != elfcpp::STT_SECTION)
1642 {
1643 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1644 rela_dyn->add_local(object, r_sym, orig_r_type, output_section,
1645 data_shndx, reloc.get_r_offset(),
1646 reloc.get_r_addend());
1647 }
1648 else
1649 {
1650 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1651 gold_assert(lsym.get_st_value() == 0);
1652 rela_dyn->add_local_relative(object, r_sym, orig_r_type,
1653 output_section, data_shndx,
1654 reloc.get_r_offset(),
1655 reloc.get_r_addend());
1656 }
1657 }
1658 break;
1659
1660 case elfcpp::R_SPARC_WDISP30:
1661 case elfcpp::R_SPARC_WDISP22:
1662 case elfcpp::R_SPARC_WDISP19:
1663 case elfcpp::R_SPARC_WDISP16:
1664 case elfcpp::R_SPARC_DISP8:
1665 case elfcpp::R_SPARC_DISP16:
1666 case elfcpp::R_SPARC_DISP32:
1667 case elfcpp::R_SPARC_DISP64:
1668 case elfcpp::R_SPARC_PC10:
1669 case elfcpp::R_SPARC_PC22:
1670 break;
1671
1672 case elfcpp::R_SPARC_GOT10:
1673 case elfcpp::R_SPARC_GOT13:
1674 case elfcpp::R_SPARC_GOT22:
1675 {
1676 // The symbol requires a GOT entry.
1677 Output_data_got<size, big_endian>* got;
1678 unsigned int r_sym;
1679
1680 got = target->got_section(symtab, layout);
1681 r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1682
1683 // If we are generating a shared object, we need to add a
1684 // dynamic relocation for this symbol's GOT entry.
1685 if (parameters->options().output_is_position_independent())
1686 {
1687 if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD))
1688 {
1689 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1690 unsigned int off;
1691
1692 off = got->add_constant(0);
1693 object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off);
1694 rela_dyn->add_local_relative(object, r_sym,
1695 elfcpp::R_SPARC_RELATIVE,
1696 got, off, 0);
1697 }
1698 }
1699 else
1700 got->add_local(object, r_sym, GOT_TYPE_STANDARD);
1701 }
1702 break;
1703
1704 // These are initial TLS relocs, which are expected when
1705 // linking.
1706 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1707 case elfcpp::R_SPARC_TLS_GD_LO10:
1708 case elfcpp::R_SPARC_TLS_GD_ADD:
1709 case elfcpp::R_SPARC_TLS_GD_CALL:
1710 case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic
1711 case elfcpp::R_SPARC_TLS_LDM_LO10:
1712 case elfcpp::R_SPARC_TLS_LDM_ADD:
1713 case elfcpp::R_SPARC_TLS_LDM_CALL:
1714 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
1715 case elfcpp::R_SPARC_TLS_LDO_LOX10:
1716 case elfcpp::R_SPARC_TLS_LDO_ADD:
1717 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
1718 case elfcpp::R_SPARC_TLS_IE_LO10:
1719 case elfcpp::R_SPARC_TLS_IE_LD:
1720 case elfcpp::R_SPARC_TLS_IE_LDX:
1721 case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec
1722 case elfcpp::R_SPARC_TLS_LE_LOX10:
1723 {
1724 bool output_is_shared = parameters->options().shared();
1725 const tls::Tls_optimization optimized_type
1726 = optimize_tls_reloc(!output_is_shared, r_type);
1727 switch (r_type)
1728 {
1729 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1730 case elfcpp::R_SPARC_TLS_GD_LO10:
1731 case elfcpp::R_SPARC_TLS_GD_ADD:
1732 case elfcpp::R_SPARC_TLS_GD_CALL:
1733 if (optimized_type == tls::TLSOPT_NONE)
1734 {
1735 // Create a pair of GOT entries for the module index and
1736 // dtv-relative offset.
1737 Output_data_got<size, big_endian>* got
1738 = target->got_section(symtab, layout);
1739 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1740 unsigned int shndx = lsym.get_st_shndx();
1741 bool is_ordinary;
1742 shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary);
1743 if (!is_ordinary)
1744 object->error(_("local symbol %u has bad shndx %u"),
1745 r_sym, shndx);
1746 else
1747 got->add_local_pair_with_rela(object, r_sym,
1748 lsym.get_st_shndx(),
1749 GOT_TYPE_TLS_PAIR,
1750 target->rela_dyn_section(layout),
1751 (size == 64
1752 ? elfcpp::R_SPARC_TLS_DTPMOD64
1753 : elfcpp::R_SPARC_TLS_DTPMOD32),
1754 0);
1755 if (r_type == elfcpp::R_SPARC_TLS_GD_CALL)
1756 generate_tls_call(symtab, layout, target);
1757 }
1758 else if (optimized_type != tls::TLSOPT_TO_LE)
1759 unsupported_reloc_local(object, r_type);
1760 break;
1761
1762 case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic
1763 case elfcpp::R_SPARC_TLS_LDM_LO10:
1764 case elfcpp::R_SPARC_TLS_LDM_ADD:
1765 case elfcpp::R_SPARC_TLS_LDM_CALL:
1766 if (optimized_type == tls::TLSOPT_NONE)
1767 {
1768 // Create a GOT entry for the module index.
1769 target->got_mod_index_entry(symtab, layout, object);
1770
1771 if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL)
1772 generate_tls_call(symtab, layout, target);
1773 }
1774 else if (optimized_type != tls::TLSOPT_TO_LE)
1775 unsupported_reloc_local(object, r_type);
1776 break;
1777
1778 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
1779 case elfcpp::R_SPARC_TLS_LDO_LOX10:
1780 case elfcpp::R_SPARC_TLS_LDO_ADD:
1781 break;
1782
1783 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
1784 case elfcpp::R_SPARC_TLS_IE_LO10:
1785 case elfcpp::R_SPARC_TLS_IE_LD:
1786 case elfcpp::R_SPARC_TLS_IE_LDX:
1787 layout->set_has_static_tls();
1788 if (optimized_type == tls::TLSOPT_NONE)
1789 {
1790 // Create a GOT entry for the tp-relative offset.
1791 Output_data_got<size, big_endian>* got
1792 = target->got_section(symtab, layout);
1793 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1794
1795 if (!object->local_has_got_offset(r_sym, GOT_TYPE_TLS_OFFSET))
1796 {
1797 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1798 unsigned int off = got->add_constant(0);
1799
1800 object->set_local_got_offset(r_sym, GOT_TYPE_TLS_OFFSET,
1801 off);
1802 rela_dyn->add_local_relative(object, r_sym,
1803 (size == 64 ?
1804 elfcpp::R_SPARC_TLS_TPOFF64 :
1805 elfcpp::R_SPARC_TLS_TPOFF32),
1806 got, off, 0);
1807 }
1808 }
1809 else if (optimized_type != tls::TLSOPT_TO_LE)
1810 unsupported_reloc_local(object, r_type);
1811 break;
1812
1813 case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec
1814 case elfcpp::R_SPARC_TLS_LE_LOX10:
1815 layout->set_has_static_tls();
1816 if (output_is_shared)
1817 {
1818 // We need to create a dynamic relocation.
1819 gold_assert(lsym.get_st_type() != elfcpp::STT_SECTION);
1820 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1821 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1822 rela_dyn->add_local_relative(object, r_sym, r_type,
1823 output_section, data_shndx,
1824 reloc.get_r_offset(), 0);
1825 }
1826 break;
1827 }
1828 }
1829 break;
1830
1831 // These are relocations which should only be seen by the
1832 // dynamic linker, and should never be seen here.
1833 case elfcpp::R_SPARC_COPY:
1834 case elfcpp::R_SPARC_GLOB_DAT:
1835 case elfcpp::R_SPARC_JMP_SLOT:
1836 case elfcpp::R_SPARC_RELATIVE:
1837 case elfcpp::R_SPARC_TLS_DTPMOD64:
1838 case elfcpp::R_SPARC_TLS_DTPMOD32:
1839 case elfcpp::R_SPARC_TLS_DTPOFF64:
1840 case elfcpp::R_SPARC_TLS_DTPOFF32:
1841 case elfcpp::R_SPARC_TLS_TPOFF64:
1842 case elfcpp::R_SPARC_TLS_TPOFF32:
1843 gold_error(_("%s: unexpected reloc %u in object file"),
1844 object->name().c_str(), r_type);
1845 break;
1846
1847 default:
1848 unsupported_reloc_local(object, r_type);
1849 break;
1850 }
1851 }
1852
1853 // Report an unsupported relocation against a global symbol.
1854
1855 template<int size, bool big_endian>
1856 void
1857 Target_sparc<size, big_endian>::Scan::unsupported_reloc_global(
1858 Sized_relobj<size, big_endian>* object,
1859 unsigned int r_type,
1860 Symbol* gsym)
1861 {
1862 gold_error(_("%s: unsupported reloc %u against global symbol %s"),
1863 object->name().c_str(), r_type, gsym->demangled_name().c_str());
1864 }
1865
1866 // Scan a relocation for a global symbol.
1867
1868 template<int size, bool big_endian>
1869 inline void
1870 Target_sparc<size, big_endian>::Scan::global(
1871 const General_options&,
1872 Symbol_table* symtab,
1873 Layout* layout,
1874 Target_sparc<size, big_endian>* target,
1875 Sized_relobj<size, big_endian>* object,
1876 unsigned int data_shndx,
1877 Output_section* output_section,
1878 const elfcpp::Rela<size, big_endian>& reloc,
1879 unsigned int r_type,
1880 Symbol* gsym)
1881 {
1882 unsigned int orig_r_type = r_type;
1883
1884 r_type &= 0xff;
1885 switch (r_type)
1886 {
1887 case elfcpp::R_SPARC_NONE:
1888 case elfcpp::R_SPARC_REGISTER:
1889 case elfcpp::R_SPARC_GNU_VTINHERIT:
1890 case elfcpp::R_SPARC_GNU_VTENTRY:
1891 break;
1892
1893 case elfcpp::R_SPARC_PLT64:
1894 case elfcpp::R_SPARC_PLT32:
1895 case elfcpp::R_SPARC_HIPLT22:
1896 case elfcpp::R_SPARC_LOPLT10:
1897 case elfcpp::R_SPARC_PCPLT32:
1898 case elfcpp::R_SPARC_PCPLT22:
1899 case elfcpp::R_SPARC_PCPLT10:
1900 case elfcpp::R_SPARC_WPLT30:
1901 // If the symbol is fully resolved, this is just a PC32 reloc.
1902 // Otherwise we need a PLT entry.
1903 if (gsym->final_value_is_known())
1904 break;
1905 // If building a shared library, we can also skip the PLT entry
1906 // if the symbol is defined in the output file and is protected
1907 // or hidden.
1908 if (gsym->is_defined()
1909 && !gsym->is_from_dynobj()
1910 && !gsym->is_preemptible())
1911 break;
1912 target->make_plt_entry(symtab, layout, gsym);
1913 break;
1914
1915 case elfcpp::R_SPARC_DISP8:
1916 case elfcpp::R_SPARC_DISP16:
1917 case elfcpp::R_SPARC_DISP32:
1918 case elfcpp::R_SPARC_DISP64:
1919 case elfcpp::R_SPARC_PC_HH22:
1920 case elfcpp::R_SPARC_PC_HM10:
1921 case elfcpp::R_SPARC_PC_LM22:
1922 case elfcpp::R_SPARC_PC10:
1923 case elfcpp::R_SPARC_PC22:
1924 case elfcpp::R_SPARC_WDISP30:
1925 case elfcpp::R_SPARC_WDISP22:
1926 case elfcpp::R_SPARC_WDISP19:
1927 case elfcpp::R_SPARC_WDISP16:
1928 {
1929 if (gsym->needs_plt_entry())
1930 target->make_plt_entry(symtab, layout, gsym);
1931 // Make a dynamic relocation if necessary.
1932 int flags = Symbol::NON_PIC_REF;
1933 if (gsym->type() == elfcpp::STT_FUNC)
1934 flags |= Symbol::FUNCTION_CALL;
1935 if (gsym->needs_dynamic_reloc(flags))
1936 {
1937 if (target->may_need_copy_reloc(gsym))
1938 {
1939 target->copy_reloc(symtab, layout, object,
1940 data_shndx, output_section, gsym,
1941 reloc);
1942 }
1943 else
1944 {
1945 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1946 check_non_pic(object, r_type);
1947 rela_dyn->add_global(gsym, orig_r_type, output_section, object,
1948 data_shndx, reloc.get_r_offset(),
1949 reloc.get_r_addend());
1950 }
1951 }
1952 }
1953 break;
1954
1955 case elfcpp::R_SPARC_UA64:
1956 case elfcpp::R_SPARC_64:
1957 case elfcpp::R_SPARC_HIX22:
1958 case elfcpp::R_SPARC_LOX10:
1959 case elfcpp::R_SPARC_H44:
1960 case elfcpp::R_SPARC_M44:
1961 case elfcpp::R_SPARC_L44:
1962 case elfcpp::R_SPARC_HH22:
1963 case elfcpp::R_SPARC_HM10:
1964 case elfcpp::R_SPARC_LM22:
1965 case elfcpp::R_SPARC_HI22:
1966 case elfcpp::R_SPARC_LO10:
1967 case elfcpp::R_SPARC_OLO10:
1968 case elfcpp::R_SPARC_UA32:
1969 case elfcpp::R_SPARC_32:
1970 case elfcpp::R_SPARC_UA16:
1971 case elfcpp::R_SPARC_16:
1972 case elfcpp::R_SPARC_11:
1973 case elfcpp::R_SPARC_10:
1974 case elfcpp::R_SPARC_8:
1975 case elfcpp::R_SPARC_7:
1976 case elfcpp::R_SPARC_6:
1977 case elfcpp::R_SPARC_5:
1978 {
1979 // Make a PLT entry if necessary.
1980 if (gsym->needs_plt_entry())
1981 {
1982 target->make_plt_entry(symtab, layout, gsym);
1983 // Since this is not a PC-relative relocation, we may be
1984 // taking the address of a function. In that case we need to
1985 // set the entry in the dynamic symbol table to the address of
1986 // the PLT entry.
1987 if (gsym->is_from_dynobj() && !parameters->options().shared())
1988 gsym->set_needs_dynsym_value();
1989 }
1990 // Make a dynamic relocation if necessary.
1991 if (gsym->needs_dynamic_reloc(Symbol::ABSOLUTE_REF))
1992 {
1993 if (target->may_need_copy_reloc(gsym))
1994 {
1995 target->copy_reloc(symtab, layout, object,
1996 data_shndx, output_section, gsym, reloc);
1997 }
1998 else if ((r_type == elfcpp::R_SPARC_32
1999 || r_type == elfcpp::R_SPARC_64)
2000 && gsym->can_use_relative_reloc(false))
2001 {
2002 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2003 rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE,
2004 output_section, object,
2005 data_shndx, reloc.get_r_offset(),
2006 reloc.get_r_addend());
2007 }
2008 else
2009 {
2010 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2011
2012 check_non_pic(object, r_type);
2013 if (gsym->is_from_dynobj()
2014 || gsym->is_undefined()
2015 || gsym->is_preemptible())
2016 rela_dyn->add_global(gsym, orig_r_type, output_section,
2017 object, data_shndx,
2018 reloc.get_r_offset(),
2019 reloc.get_r_addend());
2020 else
2021 rela_dyn->add_global_relative(gsym, orig_r_type,
2022 output_section, object,
2023 data_shndx,
2024 reloc.get_r_offset(),
2025 reloc.get_r_addend());
2026 }
2027 }
2028 }
2029 break;
2030
2031 case elfcpp::R_SPARC_GOT10:
2032 case elfcpp::R_SPARC_GOT13:
2033 case elfcpp::R_SPARC_GOT22:
2034 {
2035 // The symbol requires a GOT entry.
2036 Output_data_got<size, big_endian>* got;
2037
2038 got = target->got_section(symtab, layout);
2039 if (gsym->final_value_is_known())
2040 got->add_global(gsym, GOT_TYPE_STANDARD);
2041 else
2042 {
2043 // If this symbol is not fully resolved, we need to add a
2044 // dynamic relocation for it.
2045 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2046 if (gsym->is_from_dynobj()
2047 || gsym->is_undefined()
2048 || gsym->is_preemptible())
2049 got->add_global_with_rela(gsym, GOT_TYPE_STANDARD, rela_dyn,
2050 elfcpp::R_SPARC_GLOB_DAT);
2051 else if (!gsym->has_got_offset(GOT_TYPE_STANDARD))
2052 {
2053 unsigned int off = got->add_constant(0);
2054
2055 gsym->set_got_offset(GOT_TYPE_STANDARD, off);
2056 rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE,
2057 got, off, 0);
2058 }
2059 }
2060 }
2061 break;
2062
2063 // These are initial tls relocs, which are expected when
2064 // linking.
2065 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2066 case elfcpp::R_SPARC_TLS_GD_LO10:
2067 case elfcpp::R_SPARC_TLS_GD_ADD:
2068 case elfcpp::R_SPARC_TLS_GD_CALL:
2069 case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic
2070 case elfcpp::R_SPARC_TLS_LDM_LO10:
2071 case elfcpp::R_SPARC_TLS_LDM_ADD:
2072 case elfcpp::R_SPARC_TLS_LDM_CALL:
2073 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
2074 case elfcpp::R_SPARC_TLS_LDO_LOX10:
2075 case elfcpp::R_SPARC_TLS_LDO_ADD:
2076 case elfcpp::R_SPARC_TLS_LE_HIX22:
2077 case elfcpp::R_SPARC_TLS_LE_LOX10:
2078 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
2079 case elfcpp::R_SPARC_TLS_IE_LO10:
2080 case elfcpp::R_SPARC_TLS_IE_LD:
2081 case elfcpp::R_SPARC_TLS_IE_LDX:
2082 {
2083 const bool is_final = gsym->final_value_is_known();
2084 const tls::Tls_optimization optimized_type
2085 = optimize_tls_reloc(is_final, r_type);
2086 switch (r_type)
2087 {
2088 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2089 case elfcpp::R_SPARC_TLS_GD_LO10:
2090 case elfcpp::R_SPARC_TLS_GD_ADD:
2091 case elfcpp::R_SPARC_TLS_GD_CALL:
2092 if (optimized_type == tls::TLSOPT_NONE)
2093 {
2094 // Create a pair of GOT entries for the module index and
2095 // dtv-relative offset.
2096 Output_data_got<size, big_endian>* got
2097 = target->got_section(symtab, layout);
2098 got->add_global_pair_with_rela(gsym, GOT_TYPE_TLS_PAIR,
2099 target->rela_dyn_section(layout),
2100 (size == 64 ?
2101 elfcpp::R_SPARC_TLS_DTPMOD64 :
2102 elfcpp::R_SPARC_TLS_DTPMOD32),
2103 (size == 64 ?
2104 elfcpp::R_SPARC_TLS_DTPOFF64 :
2105 elfcpp::R_SPARC_TLS_DTPOFF32));
2106
2107 // Emit R_SPARC_WPLT30 against "__tls_get_addr"
2108 if (r_type == elfcpp::R_SPARC_TLS_GD_CALL)
2109 generate_tls_call(symtab, layout, target);
2110 }
2111 else if (optimized_type == tls::TLSOPT_TO_IE)
2112 {
2113 // Create a GOT entry for the tp-relative offset.
2114 Output_data_got<size, big_endian>* got
2115 = target->got_section(symtab, layout);
2116 got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET,
2117 target->rela_dyn_section(layout),
2118 (size == 64 ?
2119 elfcpp::R_SPARC_TLS_TPOFF64 :
2120 elfcpp::R_SPARC_TLS_TPOFF32));
2121 }
2122 else if (optimized_type != tls::TLSOPT_TO_LE)
2123 unsupported_reloc_global(object, r_type, gsym);
2124 break;
2125
2126 case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic
2127 case elfcpp::R_SPARC_TLS_LDM_LO10:
2128 case elfcpp::R_SPARC_TLS_LDM_ADD:
2129 case elfcpp::R_SPARC_TLS_LDM_CALL:
2130 if (optimized_type == tls::TLSOPT_NONE)
2131 {
2132 // Create a GOT entry for the module index.
2133 target->got_mod_index_entry(symtab, layout, object);
2134
2135 if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL)
2136 generate_tls_call(symtab, layout, target);
2137 }
2138 else if (optimized_type != tls::TLSOPT_TO_LE)
2139 unsupported_reloc_global(object, r_type, gsym);
2140 break;
2141
2142 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
2143 case elfcpp::R_SPARC_TLS_LDO_LOX10:
2144 case elfcpp::R_SPARC_TLS_LDO_ADD:
2145 break;
2146
2147 case elfcpp::R_SPARC_TLS_LE_HIX22:
2148 case elfcpp::R_SPARC_TLS_LE_LOX10:
2149 layout->set_has_static_tls();
2150 if (parameters->options().shared())
2151 {
2152 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2153 rela_dyn->add_global_relative(gsym, orig_r_type,
2154 output_section, object,
2155 data_shndx, reloc.get_r_offset(),
2156 0);
2157 }
2158 break;
2159
2160 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
2161 case elfcpp::R_SPARC_TLS_IE_LO10:
2162 case elfcpp::R_SPARC_TLS_IE_LD:
2163 case elfcpp::R_SPARC_TLS_IE_LDX:
2164 layout->set_has_static_tls();
2165 if (optimized_type == tls::TLSOPT_NONE)
2166 {
2167 // Create a GOT entry for the tp-relative offset.
2168 Output_data_got<size, big_endian>* got
2169 = target->got_section(symtab, layout);
2170 got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET,
2171 target->rela_dyn_section(layout),
2172 (size == 64 ?
2173 elfcpp::R_SPARC_TLS_TPOFF64 :
2174 elfcpp::R_SPARC_TLS_TPOFF32));
2175 }
2176 else if (optimized_type != tls::TLSOPT_TO_LE)
2177 unsupported_reloc_global(object, r_type, gsym);
2178 break;
2179 }
2180 }
2181 break;
2182
2183 // These are relocations which should only be seen by the
2184 // dynamic linker, and should never be seen here.
2185 case elfcpp::R_SPARC_COPY:
2186 case elfcpp::R_SPARC_GLOB_DAT:
2187 case elfcpp::R_SPARC_JMP_SLOT:
2188 case elfcpp::R_SPARC_RELATIVE:
2189 case elfcpp::R_SPARC_TLS_DTPMOD64:
2190 case elfcpp::R_SPARC_TLS_DTPMOD32:
2191 case elfcpp::R_SPARC_TLS_DTPOFF64:
2192 case elfcpp::R_SPARC_TLS_DTPOFF32:
2193 case elfcpp::R_SPARC_TLS_TPOFF64:
2194 case elfcpp::R_SPARC_TLS_TPOFF32:
2195 gold_error(_("%s: unexpected reloc %u in object file"),
2196 object->name().c_str(), r_type);
2197 break;
2198
2199 default:
2200 unsupported_reloc_global(object, r_type, gsym);
2201 break;
2202 }
2203 }
2204
2205 // Scan relocations for a section.
2206
2207 template<int size, bool big_endian>
2208 void
2209 Target_sparc<size, big_endian>::scan_relocs(
2210 const General_options& options,
2211 Symbol_table* symtab,
2212 Layout* layout,
2213 Sized_relobj<size, big_endian>* object,
2214 unsigned int data_shndx,
2215 unsigned int sh_type,
2216 const unsigned char* prelocs,
2217 size_t reloc_count,
2218 Output_section* output_section,
2219 bool needs_special_offset_handling,
2220 size_t local_symbol_count,
2221 const unsigned char* plocal_symbols)
2222 {
2223 typedef Target_sparc<size, big_endian> Sparc;
2224 typedef typename Target_sparc<size, big_endian>::Scan Scan;
2225
2226 if (sh_type == elfcpp::SHT_REL)
2227 {
2228 gold_error(_("%s: unsupported REL reloc section"),
2229 object->name().c_str());
2230 return;
2231 }
2232
2233 gold::scan_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>(
2234 options,
2235 symtab,
2236 layout,
2237 this,
2238 object,
2239 data_shndx,
2240 prelocs,
2241 reloc_count,
2242 output_section,
2243 needs_special_offset_handling,
2244 local_symbol_count,
2245 plocal_symbols);
2246 }
2247
2248 // Finalize the sections.
2249
2250 template<int size, bool big_endian>
2251 void
2252 Target_sparc<size, big_endian>::do_finalize_sections(Layout* layout)
2253 {
2254 // Fill in some more dynamic tags.
2255 Output_data_dynamic* const odyn = layout->dynamic_data();
2256 if (odyn != NULL)
2257 {
2258 if (this->plt_ != NULL)
2259 {
2260 const Output_data* od = this->plt_->rel_plt();
2261 odyn->add_section_size(elfcpp::DT_PLTRELSZ, od);
2262 odyn->add_section_address(elfcpp::DT_JMPREL, od);
2263 odyn->add_constant(elfcpp::DT_PLTREL, elfcpp::DT_RELA);
2264
2265 odyn->add_section_address(elfcpp::DT_PLTGOT, this->plt_);
2266 }
2267
2268 if (this->rela_dyn_ != NULL)
2269 {
2270 const Output_data* od = this->rela_dyn_;
2271 odyn->add_section_address(elfcpp::DT_RELA, od);
2272 odyn->add_section_size(elfcpp::DT_RELASZ, od);
2273 odyn->add_constant(elfcpp::DT_RELAENT,
2274 elfcpp::Elf_sizes<size>::rela_size);
2275 }
2276
2277 if (!parameters->options().shared())
2278 {
2279 // The value of the DT_DEBUG tag is filled in by the dynamic
2280 // linker at run time, and used by the debugger.
2281 odyn->add_constant(elfcpp::DT_DEBUG, 0);
2282 }
2283 }
2284
2285 // Emit any relocs we saved in an attempt to avoid generating COPY
2286 // relocs.
2287 if (this->copy_relocs_.any_saved_relocs())
2288 this->copy_relocs_.emit(this->rela_dyn_section(layout));
2289 }
2290
2291 // Perform a relocation.
2292
2293 template<int size, bool big_endian>
2294 inline bool
2295 Target_sparc<size, big_endian>::Relocate::relocate(
2296 const Relocate_info<size, big_endian>* relinfo,
2297 Target_sparc* target,
2298 size_t relnum,
2299 const elfcpp::Rela<size, big_endian>& rela,
2300 unsigned int r_type,
2301 const Sized_symbol<size>* gsym,
2302 const Symbol_value<size>* psymval,
2303 unsigned char* view,
2304 typename elfcpp::Elf_types<size>::Elf_Addr address,
2305 section_size_type view_size)
2306 {
2307 r_type &= 0xff;
2308
2309 if (this->ignore_gd_add_)
2310 {
2311 if (r_type != elfcpp::R_SPARC_TLS_GD_ADD)
2312 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2313 _("missing expected TLS relocation"));
2314 else
2315 {
2316 this->ignore_gd_add_ = false;
2317 return false;
2318 }
2319 }
2320
2321 typedef Sparc_relocate_functions<size, big_endian> Reloc;
2322
2323 // Pick the value to use for symbols defined in shared objects.
2324 Symbol_value<size> symval;
2325 if (gsym != NULL
2326 && (gsym->is_from_dynobj()
2327 || (parameters->options().shared()
2328 && (gsym->is_undefined() || gsym->is_preemptible())))
2329 && gsym->has_plt_offset())
2330 {
2331 elfcpp::Elf_Xword value;
2332
2333 value = target->plt_section()->address() + gsym->plt_offset();
2334
2335 symval.set_output_value(value);
2336
2337 psymval = &symval;
2338 }
2339
2340 const Sized_relobj<size, big_endian>* object = relinfo->object;
2341 const elfcpp::Elf_Xword addend = rela.get_r_addend();
2342
2343 // Get the GOT offset if needed. Unlike i386 and x86_64, our GOT
2344 // pointer points to the beginning, not the end, of the table.
2345 // So we just use the plain offset.
2346 bool have_got_offset = false;
2347 unsigned int got_offset = 0;
2348 switch (r_type)
2349 {
2350 case elfcpp::R_SPARC_GOT10:
2351 case elfcpp::R_SPARC_GOT13:
2352 case elfcpp::R_SPARC_GOT22:
2353 if (gsym != NULL)
2354 {
2355 gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD));
2356 got_offset = gsym->got_offset(GOT_TYPE_STANDARD);
2357 }
2358 else
2359 {
2360 unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
2361 gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD));
2362 got_offset = object->local_got_offset(r_sym, GOT_TYPE_STANDARD);
2363 }
2364 have_got_offset = true;
2365 break;
2366
2367 default:
2368 break;
2369 }
2370
2371 switch (r_type)
2372 {
2373 case elfcpp::R_SPARC_NONE:
2374 case elfcpp::R_SPARC_REGISTER:
2375 case elfcpp::R_SPARC_GNU_VTINHERIT:
2376 case elfcpp::R_SPARC_GNU_VTENTRY:
2377 break;
2378
2379 case elfcpp::R_SPARC_8:
2380 Relocate_functions<size, big_endian>::rela8(view, object,
2381 psymval, addend);
2382 break;
2383
2384 case elfcpp::R_SPARC_16:
2385 Relocate_functions<size, big_endian>::rela16(view, object,
2386 psymval, addend);
2387 break;
2388
2389 case elfcpp::R_SPARC_32:
2390 if (!parameters->options().output_is_position_independent())
2391 Relocate_functions<size, big_endian>::rela32(view, object,
2392 psymval, addend);
2393 break;
2394
2395 case elfcpp::R_SPARC_DISP8:
2396 Reloc::disp8(view, object, psymval, addend, address);
2397 break;
2398
2399 case elfcpp::R_SPARC_DISP16:
2400 Reloc::disp16(view, object, psymval, addend, address);
2401 break;
2402
2403 case elfcpp::R_SPARC_DISP32:
2404 Reloc::disp32(view, object, psymval, addend, address);
2405 break;
2406
2407 case elfcpp::R_SPARC_DISP64:
2408 Reloc::disp64(view, object, psymval, addend, address);
2409 break;
2410
2411 case elfcpp::R_SPARC_WDISP30:
2412 case elfcpp::R_SPARC_WPLT30:
2413 Reloc::wdisp30(view, object, psymval, addend, address);
2414 break;
2415
2416 case elfcpp::R_SPARC_WDISP22:
2417 Reloc::wdisp22(view, object, psymval, addend, address);
2418 break;
2419
2420 case elfcpp::R_SPARC_WDISP19:
2421 Reloc::wdisp19(view, object, psymval, addend, address);
2422 break;
2423
2424 case elfcpp::R_SPARC_WDISP16:
2425 Reloc::wdisp16(view, object, psymval, addend, address);
2426 break;
2427
2428 case elfcpp::R_SPARC_HI22:
2429 Reloc::hi22(view, object, psymval, addend);
2430 break;
2431
2432 case elfcpp::R_SPARC_22:
2433 Reloc::rela32_22(view, object, psymval, addend);
2434 break;
2435
2436 case elfcpp::R_SPARC_13:
2437 Reloc::rela32_13(view, object, psymval, addend);
2438 break;
2439
2440 case elfcpp::R_SPARC_LO10:
2441 Reloc::lo10(view, object, psymval, addend);
2442 break;
2443
2444 case elfcpp::R_SPARC_GOT10:
2445 Reloc::lo10(view, got_offset, addend);
2446 break;
2447
2448 case elfcpp::R_SPARC_GOT13:
2449 Reloc::rela32_13(view, got_offset, addend);
2450 break;
2451
2452 case elfcpp::R_SPARC_GOT22:
2453 Reloc::hi22(view, got_offset, addend);
2454 break;
2455
2456 case elfcpp::R_SPARC_PC10:
2457 Reloc::pc10(view, object, psymval, addend, address);
2458 break;
2459
2460 case elfcpp::R_SPARC_PC22:
2461 Reloc::pc22(view, object, psymval, addend, address);
2462 break;
2463
2464 case elfcpp::R_SPARC_TLS_DTPOFF32:
2465 case elfcpp::R_SPARC_UA32:
2466 Reloc::ua32(view, object, psymval, addend);
2467 break;
2468
2469 case elfcpp::R_SPARC_PLT64:
2470 Relocate_functions<size, big_endian>::rela64(view, object,
2471 psymval, addend);
2472 break;
2473
2474 case elfcpp::R_SPARC_PLT32:
2475 Relocate_functions<size, big_endian>::rela32(view, object,
2476 psymval, addend);
2477 break;
2478
2479 case elfcpp::R_SPARC_HIPLT22:
2480 Reloc::hi22(view, object, psymval, addend);
2481 break;
2482
2483 case elfcpp::R_SPARC_LOPLT10:
2484 Reloc::lo10(view, object, psymval, addend);
2485 break;
2486
2487 case elfcpp::R_SPARC_PCPLT32:
2488 Reloc::disp32(view, object, psymval, addend, address);
2489 break;
2490
2491 case elfcpp::R_SPARC_PCPLT22:
2492 Reloc::pcplt22(view, object, psymval, addend, address);
2493 break;
2494
2495 case elfcpp::R_SPARC_PCPLT10:
2496 Reloc::lo10(view, object, psymval, addend, address);
2497 break;
2498
2499 case elfcpp::R_SPARC_64:
2500 if (!parameters->options().output_is_position_independent())
2501 Relocate_functions<size, big_endian>::rela64(view, object,
2502 psymval, addend);
2503 break;
2504
2505 case elfcpp::R_SPARC_OLO10:
2506 {
2507 unsigned int addend2 = rela.get_r_info() & 0xffffffff;
2508 addend2 = ((addend2 >> 8) ^ 0x800000) - 0x800000;
2509 Reloc::olo10(view, object, psymval, addend, addend2);
2510 }
2511 break;
2512
2513 case elfcpp::R_SPARC_HH22:
2514 Reloc::hh22(view, object, psymval, addend);
2515 break;
2516
2517 case elfcpp::R_SPARC_PC_HH22:
2518 Reloc::pc_hh22(view, object, psymval, addend, address);
2519 break;
2520
2521 case elfcpp::R_SPARC_HM10:
2522 Reloc::hm10(view, object, psymval, addend);
2523 break;
2524
2525 case elfcpp::R_SPARC_PC_HM10:
2526 Reloc::pc_hm10(view, object, psymval, addend, address);
2527 break;
2528
2529 case elfcpp::R_SPARC_LM22:
2530 Reloc::hi22(view, object, psymval, addend);
2531 break;
2532
2533 case elfcpp::R_SPARC_PC_LM22:
2534 Reloc::pcplt22(view, object, psymval, addend, address);
2535 break;
2536
2537 case elfcpp::R_SPARC_11:
2538 Reloc::rela32_11(view, object, psymval, addend);
2539 break;
2540
2541 case elfcpp::R_SPARC_10:
2542 Reloc::rela32_10(view, object, psymval, addend);
2543 break;
2544
2545 case elfcpp::R_SPARC_7:
2546 Reloc::rela32_7(view, object, psymval, addend);
2547 break;
2548
2549 case elfcpp::R_SPARC_6:
2550 Reloc::rela32_6(view, object, psymval, addend);
2551 break;
2552
2553 case elfcpp::R_SPARC_5:
2554 Reloc::rela32_5(view, object, psymval, addend);
2555 break;
2556
2557 case elfcpp::R_SPARC_HIX22:
2558 Reloc::hix22(view, object, psymval, addend);
2559 break;
2560
2561 case elfcpp::R_SPARC_LOX10:
2562 Reloc::lox10(view, object, psymval, addend);
2563 break;
2564
2565 case elfcpp::R_SPARC_H44:
2566 Reloc::h44(view, object, psymval, addend);
2567 break;
2568
2569 case elfcpp::R_SPARC_M44:
2570 Reloc::m44(view, object, psymval, addend);
2571 break;
2572
2573 case elfcpp::R_SPARC_L44:
2574 Reloc::l44(view, object, psymval, addend);
2575 break;
2576
2577 case elfcpp::R_SPARC_TLS_DTPOFF64:
2578 case elfcpp::R_SPARC_UA64:
2579 Reloc::ua64(view, object, psymval, addend);
2580 break;
2581
2582 case elfcpp::R_SPARC_UA16:
2583 Reloc::ua16(view, object, psymval, addend);
2584 break;
2585
2586 case elfcpp::R_SPARC_TLS_GD_HI22:
2587 case elfcpp::R_SPARC_TLS_GD_LO10:
2588 case elfcpp::R_SPARC_TLS_GD_ADD:
2589 case elfcpp::R_SPARC_TLS_GD_CALL:
2590 case elfcpp::R_SPARC_TLS_LDM_HI22:
2591 case elfcpp::R_SPARC_TLS_LDM_LO10:
2592 case elfcpp::R_SPARC_TLS_LDM_ADD:
2593 case elfcpp::R_SPARC_TLS_LDM_CALL:
2594 case elfcpp::R_SPARC_TLS_LDO_HIX22:
2595 case elfcpp::R_SPARC_TLS_LDO_LOX10:
2596 case elfcpp::R_SPARC_TLS_LDO_ADD:
2597 case elfcpp::R_SPARC_TLS_IE_HI22:
2598 case elfcpp::R_SPARC_TLS_IE_LO10:
2599 case elfcpp::R_SPARC_TLS_IE_LD:
2600 case elfcpp::R_SPARC_TLS_IE_LDX:
2601 case elfcpp::R_SPARC_TLS_LE_HIX22:
2602 case elfcpp::R_SPARC_TLS_LE_LOX10:
2603 this->relocate_tls(relinfo, target, relnum, rela,
2604 r_type, gsym, psymval, view,
2605 address, view_size);
2606 break;
2607
2608 case elfcpp::R_SPARC_COPY:
2609 case elfcpp::R_SPARC_GLOB_DAT:
2610 case elfcpp::R_SPARC_JMP_SLOT:
2611 case elfcpp::R_SPARC_RELATIVE:
2612 // These are outstanding tls relocs, which are unexpected when
2613 // linking.
2614 case elfcpp::R_SPARC_TLS_DTPMOD64:
2615 case elfcpp::R_SPARC_TLS_DTPMOD32:
2616 case elfcpp::R_SPARC_TLS_TPOFF64:
2617 case elfcpp::R_SPARC_TLS_TPOFF32:
2618 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2619 _("unexpected reloc %u in object file"),
2620 r_type);
2621 break;
2622
2623 default:
2624 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2625 _("unsupported reloc %u"),
2626 r_type);
2627 break;
2628 }
2629
2630 return true;
2631 }
2632
2633 // Perform a TLS relocation.
2634
2635 template<int size, bool big_endian>
2636 inline void
2637 Target_sparc<size, big_endian>::Relocate::relocate_tls(
2638 const Relocate_info<size, big_endian>* relinfo,
2639 Target_sparc<size, big_endian>* target,
2640 size_t relnum,
2641 const elfcpp::Rela<size, big_endian>& rela,
2642 unsigned int r_type,
2643 const Sized_symbol<size>* gsym,
2644 const Symbol_value<size>* psymval,
2645 unsigned char* view,
2646 typename elfcpp::Elf_types<size>::Elf_Addr address,
2647 section_size_type)
2648 {
2649 Output_segment* tls_segment = relinfo->layout->tls_segment();
2650 typedef Sparc_relocate_functions<size, big_endian> Reloc;
2651 const Sized_relobj<size, big_endian>* object = relinfo->object;
2652 typedef typename elfcpp::Swap<32, true>::Valtype Insntype;
2653
2654 const elfcpp::Elf_Xword addend = rela.get_r_addend();
2655 typename elfcpp::Elf_types<size>::Elf_Addr value = psymval->value(object, 0);
2656
2657 const bool is_final =
2658 (gsym == NULL
2659 ? !parameters->options().output_is_position_independent()
2660 : gsym->final_value_is_known());
2661 const tls::Tls_optimization optimized_type
2662 = optimize_tls_reloc(is_final, r_type);
2663
2664 switch (r_type)
2665 {
2666 case elfcpp::R_SPARC_TLS_GD_HI22:
2667 case elfcpp::R_SPARC_TLS_GD_LO10:
2668 case elfcpp::R_SPARC_TLS_GD_ADD:
2669 case elfcpp::R_SPARC_TLS_GD_CALL:
2670 if (optimized_type == tls::TLSOPT_TO_LE)
2671 {
2672 Insntype* wv = reinterpret_cast<Insntype*>(view);
2673 Insntype val;
2674
2675 value -= tls_segment->memsz();
2676
2677 switch (r_type)
2678 {
2679 case elfcpp::R_SPARC_TLS_GD_HI22:
2680 // TLS_GD_HI22 --> TLS_LE_HIX22
2681 Reloc::hix22(view, value, addend);
2682 break;
2683
2684 case elfcpp::R_SPARC_TLS_GD_LO10:
2685 // TLS_GD_LO10 --> TLS_LE_LOX10
2686 Reloc::lox10(view, value, addend);
2687 break;
2688
2689 case elfcpp::R_SPARC_TLS_GD_ADD:
2690 // add %reg1, %reg2, %reg3 --> mov %g7, %reg2, %reg3
2691 val = elfcpp::Swap<32, true>::readval(wv);
2692 val = (val & ~0x7c000) | 0x1c000;
2693 elfcpp::Swap<32, true>::writeval(wv, val);
2694 break;
2695 case elfcpp::R_SPARC_TLS_GD_CALL:
2696 // call __tls_get_addr --> nop
2697 elfcpp::Swap<32, true>::writeval(wv, sparc_nop);
2698 break;
2699 }
2700 break;
2701 }
2702 else
2703 {
2704 unsigned int got_type = (optimized_type == tls::TLSOPT_TO_IE
2705 ? GOT_TYPE_TLS_OFFSET
2706 : GOT_TYPE_TLS_PAIR);
2707 if (gsym != NULL)
2708 {
2709 gold_assert(gsym->has_got_offset(got_type));
2710 value = gsym->got_offset(got_type);
2711 }
2712 else
2713 {
2714 unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
2715 gold_assert(object->local_has_got_offset(r_sym, got_type));
2716 value = object->local_got_offset(r_sym, got_type);
2717 }
2718 if (optimized_type == tls::TLSOPT_TO_IE)
2719 {
2720 Insntype* wv = reinterpret_cast<Insntype*>(view);
2721 Insntype val;
2722
2723 switch (r_type)
2724 {
2725 case elfcpp::R_SPARC_TLS_GD_HI22:
2726 // TLS_GD_HI22 --> TLS_IE_HI22
2727 Reloc::hi22(view, value, addend);
2728 break;
2729
2730 case elfcpp::R_SPARC_TLS_GD_LO10:
2731 // TLS_GD_LO10 --> TLS_IE_LO10
2732 Reloc::lo10(view, value, addend);
2733 break;
2734
2735 case elfcpp::R_SPARC_TLS_GD_ADD:
2736 // add %reg1, %reg2, %reg3 --> ld [%reg1 + %reg2], %reg3
2737 val = elfcpp::Swap<32, true>::readval(wv);
2738
2739 if (size == 64)
2740 val |= 0xc0580000;
2741 else
2742 val |= 0xc0000000;
2743
2744 elfcpp::Swap<32, true>::writeval(wv, val);
2745 break;
2746
2747 case elfcpp::R_SPARC_TLS_GD_CALL:
2748 // The compiler can put the TLS_GD_ADD instruction
2749 // into the delay slot of the call. If so, we need
2750 // to transpose the two instructions so that the
2751 // the new sequence works properly.
2752 //
2753 // The test we use is if the instruction in the
2754 // delay slot is an add with destination register
2755 // equal to %o0
2756 val = elfcpp::Swap<32, true>::readval(wv + 1);
2757 if ((val & 0x81f80000) == 0x80000000
2758 && ((val >> 25) & 0x1f) == 0x8)
2759 {
2760 if (size == 64)
2761 val |= 0xc0580000;
2762 else
2763 val |= 0xc0000000;
2764
2765 elfcpp::Swap<32, true>::writeval(wv, val);
2766
2767 wv += 1;
2768 this->ignore_gd_add_ = true;
2769 }
2770
2771 // call __tls_get_addr --> add %g7, %o0, %o0
2772 elfcpp::Swap<32, true>::writeval(wv, 0x9001c008);
2773 break;
2774 }
2775 break;
2776 }
2777 else if (optimized_type == tls::TLSOPT_NONE)
2778 {
2779 switch (r_type)
2780 {
2781 case elfcpp::R_SPARC_TLS_GD_HI22:
2782 Reloc::hi22(view, value, addend);
2783 break;
2784 case elfcpp::R_SPARC_TLS_GD_LO10:
2785 Reloc::lo10(view, value, addend);
2786 break;
2787 case elfcpp::R_SPARC_TLS_GD_ADD:
2788 break;
2789 case elfcpp::R_SPARC_TLS_GD_CALL:
2790 {
2791 Symbol_value<size> symval;
2792 elfcpp::Elf_Xword value;
2793 Symbol* tsym;
2794
2795 tsym = target->tls_get_addr_sym_;
2796 gold_assert(tsym);
2797 value = (target->plt_section()->address() +
2798 tsym->plt_offset());
2799 symval.set_output_value(value);
2800 Reloc::wdisp30(view, object, &symval, addend, address);
2801 }
2802 break;
2803 }
2804 break;
2805 }
2806 }
2807 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2808 _("unsupported reloc %u"),
2809 r_type);
2810 break;
2811
2812 case elfcpp::R_SPARC_TLS_LDM_HI22:
2813 case elfcpp::R_SPARC_TLS_LDM_LO10:
2814 case elfcpp::R_SPARC_TLS_LDM_ADD:
2815 case elfcpp::R_SPARC_TLS_LDM_CALL:
2816 if (optimized_type == tls::TLSOPT_TO_LE)
2817 {
2818 Insntype* wv = reinterpret_cast<Insntype*>(view);
2819
2820 switch (r_type)
2821 {
2822 case elfcpp::R_SPARC_TLS_LDM_HI22:
2823 case elfcpp::R_SPARC_TLS_LDM_LO10:
2824 case elfcpp::R_SPARC_TLS_LDM_ADD:
2825 elfcpp::Swap<32, true>::writeval(wv, sparc_nop);
2826 break;
2827
2828 case elfcpp::R_SPARC_TLS_LDM_CALL:
2829 elfcpp::Swap<32, true>::writeval(wv, sparc_mov_g0_o0);
2830 break;
2831 }
2832 break;
2833 }
2834 else if (optimized_type == tls::TLSOPT_NONE)
2835 {
2836 // Relocate the field with the offset of the GOT entry for
2837 // the module index.
2838 unsigned int got_offset;
2839
2840 got_offset = target->got_mod_index_entry(NULL, NULL, NULL);
2841 switch (r_type)
2842 {
2843 case elfcpp::R_SPARC_TLS_LDM_HI22:
2844 Reloc::hi22(view, got_offset, addend);
2845 break;
2846 case elfcpp::R_SPARC_TLS_LDM_LO10:
2847 Reloc::lo10(view, got_offset, addend);
2848 break;
2849 case elfcpp::R_SPARC_TLS_LDM_ADD:
2850 break;
2851 case elfcpp::R_SPARC_TLS_LDM_CALL:
2852 {
2853 Symbol_value<size> symval;
2854 elfcpp::Elf_Xword value;
2855 Symbol* tsym;
2856
2857 tsym = target->tls_get_addr_sym_;
2858 gold_assert(tsym);
2859 value = (target->plt_section()->address() +
2860 tsym->plt_offset());
2861 symval.set_output_value(value);
2862 Reloc::wdisp30(view, object, &symval, addend, address);
2863 }
2864 break;
2865 }
2866 break;
2867 }
2868 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2869 _("unsupported reloc %u"),
2870 r_type);
2871 break;
2872
2873 // These relocs can appear in debugging sections, in which case
2874 // we won't see the TLS_LDM relocs. The local_dynamic_type
2875 // field tells us this.
2876 case elfcpp::R_SPARC_TLS_LDO_HIX22:
2877 if (optimized_type == tls::TLSOPT_TO_LE)
2878 {
2879 value -= tls_segment->memsz();
2880 Reloc::hix22(view, value, addend);
2881 }
2882 else
2883 Reloc::ldo_hix22(view, value, addend);
2884 break;
2885 case elfcpp::R_SPARC_TLS_LDO_LOX10:
2886 if (optimized_type == tls::TLSOPT_TO_LE)
2887 {
2888 value -= tls_segment->memsz();
2889 Reloc::lox10(view, value, addend);
2890 }
2891 else
2892 Reloc::ldo_lox10(view, value, addend);
2893 break;
2894 case elfcpp::R_SPARC_TLS_LDO_ADD:
2895 if (optimized_type == tls::TLSOPT_TO_LE)
2896 {
2897 Insntype* wv = reinterpret_cast<Insntype*>(view);
2898 Insntype val;
2899
2900 // add %reg1, %reg2, %reg3 --> add %g7, %reg2, %reg3
2901 val = elfcpp::Swap<32, true>::readval(wv);
2902 val = (val & ~0x7c000) | 0x1c000;
2903 elfcpp::Swap<32, true>::writeval(wv, val);
2904 }
2905 break;
2906
2907 // When optimizing IE --> LE, the only relocation that is handled
2908 // differently is R_SPARC_TLS_IE_LD, it is rewritten from
2909 // 'ld{,x} [rs1 + rs2], rd' into 'mov rs2, rd' or simply a NOP is
2910 // rs2 and rd are the same.
2911 case elfcpp::R_SPARC_TLS_IE_LD:
2912 case elfcpp::R_SPARC_TLS_IE_LDX:
2913 if (optimized_type == tls::TLSOPT_TO_LE)
2914 {
2915 Insntype* wv = reinterpret_cast<Insntype*>(view);
2916 Insntype val = elfcpp::Swap<32, true>::readval(wv);
2917 Insntype rs2 = val & 0x1f;
2918 Insntype rd = (val >> 25) & 0x1f;
2919
2920 if (rs2 == rd)
2921 val = sparc_nop;
2922 else
2923 val = sparc_mov | (val & 0x3e00001f);
2924
2925 elfcpp::Swap<32, true>::writeval(wv, val);
2926 }
2927 break;
2928
2929 case elfcpp::R_SPARC_TLS_IE_HI22:
2930 case elfcpp::R_SPARC_TLS_IE_LO10:
2931 if (optimized_type == tls::TLSOPT_TO_LE)
2932 {
2933 value -= tls_segment->memsz();
2934 switch (r_type)
2935 {
2936 case elfcpp::R_SPARC_TLS_IE_HI22:
2937 // IE_HI22 --> LE_HIX22
2938 Reloc::hix22(view, value, addend);
2939 break;
2940 case elfcpp::R_SPARC_TLS_IE_LO10:
2941 // IE_LO10 --> LE_LOX10
2942 Reloc::lox10(view, value, addend);
2943 break;
2944 }
2945 break;
2946 }
2947 else if (optimized_type == tls::TLSOPT_NONE)
2948 {
2949 // Relocate the field with the offset of the GOT entry for
2950 // the tp-relative offset of the symbol.
2951 if (gsym != NULL)
2952 {
2953 gold_assert(gsym->has_got_offset(GOT_TYPE_TLS_OFFSET));
2954 value = gsym->got_offset(GOT_TYPE_TLS_OFFSET);
2955 }
2956 else
2957 {
2958 unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
2959 gold_assert(object->local_has_got_offset(r_sym,
2960 GOT_TYPE_TLS_OFFSET));
2961 value = object->local_got_offset(r_sym,
2962 GOT_TYPE_TLS_OFFSET);
2963 }
2964 switch (r_type)
2965 {
2966 case elfcpp::R_SPARC_TLS_IE_HI22:
2967 Reloc::hi22(view, value, addend);
2968 break;
2969 case elfcpp::R_SPARC_TLS_IE_LO10:
2970 Reloc::lo10(view, value, addend);
2971 break;
2972 }
2973 break;
2974 }
2975 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2976 _("unsupported reloc %u"),
2977 r_type);
2978 break;
2979
2980 case elfcpp::R_SPARC_TLS_LE_HIX22:
2981 // If we're creating a shared library, a dynamic relocation will
2982 // have been created for this location, so do not apply it now.
2983 if (!parameters->options().shared())
2984 {
2985 value -= tls_segment->memsz();
2986 Reloc::hix22(view, value, addend);
2987 }
2988 break;
2989
2990 case elfcpp::R_SPARC_TLS_LE_LOX10:
2991 // If we're creating a shared library, a dynamic relocation will
2992 // have been created for this location, so do not apply it now.
2993 if (!parameters->options().shared())
2994 {
2995 value -= tls_segment->memsz();
2996 Reloc::lox10(view, value, addend);
2997 }
2998 break;
2999 }
3000 }
3001
3002 // Relocate section data.
3003
3004 template<int size, bool big_endian>
3005 void
3006 Target_sparc<size, big_endian>::relocate_section(
3007 const Relocate_info<size, big_endian>* relinfo,
3008 unsigned int sh_type,
3009 const unsigned char* prelocs,
3010 size_t reloc_count,
3011 Output_section* output_section,
3012 bool needs_special_offset_handling,
3013 unsigned char* view,
3014 typename elfcpp::Elf_types<size>::Elf_Addr address,
3015 section_size_type view_size)
3016 {
3017 typedef Target_sparc<size, big_endian> Sparc;
3018 typedef typename Target_sparc<size, big_endian>::Relocate Sparc_relocate;
3019
3020 gold_assert(sh_type == elfcpp::SHT_RELA);
3021
3022 gold::relocate_section<size, big_endian, Sparc, elfcpp::SHT_RELA,
3023 Sparc_relocate>(
3024 relinfo,
3025 this,
3026 prelocs,
3027 reloc_count,
3028 output_section,
3029 needs_special_offset_handling,
3030 view,
3031 address,
3032 view_size);
3033 }
3034
3035 // Return the size of a relocation while scanning during a relocatable
3036 // link.
3037
3038 template<int size, bool big_endian>
3039 unsigned int
3040 Target_sparc<size, big_endian>::Relocatable_size_for_reloc::get_size_for_reloc(
3041 unsigned int,
3042 Relobj*)
3043 {
3044 // We are always SHT_RELA, so we should never get here.
3045 gold_unreachable();
3046 return 0;
3047 }
3048
3049 // Scan the relocs during a relocatable link.
3050
3051 template<int size, bool big_endian>
3052 void
3053 Target_sparc<size, big_endian>::scan_relocatable_relocs(
3054 const General_options& options,
3055 Symbol_table* symtab,
3056 Layout* layout,
3057 Sized_relobj<size, big_endian>* object,
3058 unsigned int data_shndx,
3059 unsigned int sh_type,
3060 const unsigned char* prelocs,
3061 size_t reloc_count,
3062 Output_section* output_section,
3063 bool needs_special_offset_handling,
3064 size_t local_symbol_count,
3065 const unsigned char* plocal_symbols,
3066 Relocatable_relocs* rr)
3067 {
3068 gold_assert(sh_type == elfcpp::SHT_RELA);
3069
3070 typedef gold::Default_scan_relocatable_relocs<elfcpp::SHT_RELA,
3071 Relocatable_size_for_reloc> Scan_relocatable_relocs;
3072
3073 gold::scan_relocatable_relocs<size, big_endian, elfcpp::SHT_RELA,
3074 Scan_relocatable_relocs>(
3075 options,
3076 symtab,
3077 layout,
3078 object,
3079 data_shndx,
3080 prelocs,
3081 reloc_count,
3082 output_section,
3083 needs_special_offset_handling,
3084 local_symbol_count,
3085 plocal_symbols,
3086 rr);
3087 }
3088
3089 // Relocate a section during a relocatable link.
3090
3091 template<int size, bool big_endian>
3092 void
3093 Target_sparc<size, big_endian>::relocate_for_relocatable(
3094 const Relocate_info<size, big_endian>* relinfo,
3095 unsigned int sh_type,
3096 const unsigned char* prelocs,
3097 size_t reloc_count,
3098 Output_section* output_section,
3099 off_t offset_in_output_section,
3100 const Relocatable_relocs* rr,
3101 unsigned char* view,
3102 typename elfcpp::Elf_types<size>::Elf_Addr view_address,
3103 section_size_type view_size,
3104 unsigned char* reloc_view,
3105 section_size_type reloc_view_size)
3106 {
3107 gold_assert(sh_type == elfcpp::SHT_RELA);
3108
3109 gold::relocate_for_relocatable<size, big_endian, elfcpp::SHT_RELA>(
3110 relinfo,
3111 prelocs,
3112 reloc_count,
3113 output_section,
3114 offset_in_output_section,
3115 rr,
3116 view,
3117 view_address,
3118 view_size,
3119 reloc_view,
3120 reloc_view_size);
3121 }
3122
3123 // Return the value to use for a dynamic which requires special
3124 // treatment. This is how we support equality comparisons of function
3125 // pointers across shared library boundaries, as described in the
3126 // processor specific ABI supplement.
3127
3128 template<int size, bool big_endian>
3129 uint64_t
3130 Target_sparc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const
3131 {
3132 gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset());
3133 return this->plt_section()->address() + gsym->plt_offset();
3134 }
3135
3136 // The selector for sparc object files.
3137
3138 template<int size, bool big_endian>
3139 class Target_selector_sparc : public Target_selector
3140 {
3141 public:
3142 Target_selector_sparc()
3143 : Target_selector(elfcpp::EM_NONE, size, big_endian,
3144 (size == 64 ? "elf64-sparc" : "elf32-sparc"))
3145 { }
3146
3147 Target* instantiated_target_;
3148
3149 Target* do_recognize(int machine, int, int)
3150 {
3151 switch (size)
3152 {
3153 case 64:
3154 if (machine != elfcpp::EM_SPARCV9)
3155 return NULL;
3156 break;
3157
3158 case 32:
3159 if (machine != elfcpp::EM_SPARC
3160 && machine != elfcpp::EM_SPARC32PLUS)
3161 return NULL;
3162 break;
3163
3164 default:
3165 return NULL;
3166 }
3167
3168 return do_instantiate_target();
3169 }
3170
3171 Target* do_instantiate_target()
3172 {
3173 if (this->instantiated_target_ == NULL)
3174 this->instantiated_target_ = new Target_sparc<size, big_endian>();
3175 return this->instantiated_target_;
3176 }
3177 };
3178
3179 Target_selector_sparc<32, true> target_selector_sparc32;
3180 Target_selector_sparc<64, true> target_selector_sparc64;
3181
3182 } // End anonymous namespace.
GDB Binutils - Deliverables
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