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* symtab.cc (Symbol_table::define_default_version): New function,
[deliverable/binutils-gdb.git] / gold / sparc.cc
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f5314dd5
DM		 1// sparc.cc -- sparc target support for gold.
2
6d03d481 3// Copyright 2008, 2009 Free Software Foundation, Inc.
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DM		 4// Written by David S. Miller <davem@davemloft.net>.
5
6// This file is part of gold.
7
8// This program is free software; you can redistribute it and/or modify
9// it under the terms of the GNU General Public License as published by
10// the Free Software Foundation; either version 3 of the License, or
11// (at your option) any later version.
12
13// This program is distributed in the hope that it will be useful,
14// but WITHOUT ANY WARRANTY; without even the implied warranty of
15// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16// GNU General Public License for more details.
17
18// You should have received a copy of the GNU General Public License
19// along with this program; if not, write to the Free Software
20// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21// MA 02110-1301, USA.
22
23#include "gold.h"
24
25#include <cstdlib>
26#include <cstdio>
27#include <cstring>
28
29#include "elfcpp.h"
30#include "parameters.h"
31#include "reloc.h"
32#include "sparc.h"
33#include "object.h"
34#include "symtab.h"
35#include "layout.h"
36#include "output.h"
12c0daef 37#include "copy-relocs.h"
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DM		 38#include "target.h"
39#include "target-reloc.h"
40#include "target-select.h"
41#include "tls.h"
42#include "errors.h"
43
44namespace
45{
46
47using namespace gold;
48
49template<int size, bool big_endian>
50class Output_data_plt_sparc;
51
52template<int size, bool big_endian>
53class Target_sparc : public Sized_target<size, big_endian>
54{
55 public:
56 typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section;
57
58 Target_sparc()
59 : Sized_target<size, big_endian>(&sparc_info),
60 got_(NULL), plt_(NULL), rela_dyn_(NULL),
12c0daef
ILT		 61 copy_relocs_(elfcpp::R_SPARC_COPY), dynbss_(NULL),
62 got_mod_index_offset_(-1U), tls_get_addr_sym_(NULL)
f5314dd5
DM		 63 {
64 }
65
6d03d481
ST		 66 // Process the relocations to determine unreferenced sections for
67 // garbage collection.
68 void
69 gc_process_relocs(const General_options& options,
70 Symbol_table* symtab,
71 Layout* layout,
72 Sized_relobj<size, big_endian>* object,
73 unsigned int data_shndx,
74 unsigned int sh_type,
75 const unsigned char* prelocs,
76 size_t reloc_count,
77 Output_section* output_section,
78 bool needs_special_offset_handling,
79 size_t local_symbol_count,
80 const unsigned char* plocal_symbols);
81
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DM		 82 // Scan the relocations to look for symbol adjustments.
83 void
84 scan_relocs(const General_options& options,
85 Symbol_table* symtab,
86 Layout* layout,
87 Sized_relobj<size, big_endian>* object,
88 unsigned int data_shndx,
89 unsigned int sh_type,
90 const unsigned char* prelocs,
91 size_t reloc_count,
92 Output_section* output_section,
93 bool needs_special_offset_handling,
94 size_t local_symbol_count,
95 const unsigned char* plocal_symbols);
96 // Finalize the sections.
97 void
98 do_finalize_sections(Layout*);
99
100 // Return the value to use for a dynamic which requires special
101 // treatment.
102 uint64_t
103 do_dynsym_value(const Symbol*) const;
104
105 // Relocate a section.
106 void
107 relocate_section(const Relocate_info<size, big_endian>*,
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 unsigned char* view,
114 typename elfcpp::Elf_types<size>::Elf_Addr view_address,
115 section_size_type view_size);
116
117 // Scan the relocs during a relocatable link.
118 void
119 scan_relocatable_relocs(const General_options& options,
120 Symbol_table* symtab,
121 Layout* layout,
122 Sized_relobj<size, big_endian>* object,
123 unsigned int data_shndx,
124 unsigned int sh_type,
125 const unsigned char* prelocs,
126 size_t reloc_count,
127 Output_section* output_section,
128 bool needs_special_offset_handling,
129 size_t local_symbol_count,
130 const unsigned char* plocal_symbols,
131 Relocatable_relocs*);
132
133 // Relocate a section during a relocatable link.
134 void
135 relocate_for_relocatable(const Relocate_info<size, big_endian>*,
136 unsigned int sh_type,
137 const unsigned char* prelocs,
138 size_t reloc_count,
139 Output_section* output_section,
140 off_t offset_in_output_section,
141 const Relocatable_relocs*,
142 unsigned char* view,
143 typename elfcpp::Elf_types<size>::Elf_Addr view_address,
144 section_size_type view_size,
145 unsigned char* reloc_view,
146 section_size_type reloc_view_size);
147 // Return whether SYM is defined by the ABI.
148 bool
9c2d0ef9 149 do_is_defined_by_abi(const Symbol* sym) const
f5314dd5
DM		 150 {
151 // XXX Really need to support this better...
152 if (sym->type() == elfcpp::STT_SPARC_REGISTER)
153 return 1;
154
155 return strcmp(sym->name(), "___tls_get_addr") == 0;
156 }
157
158 // Return the size of the GOT section.
159 section_size_type
160 got_size()
161 {
162 gold_assert(this->got_ != NULL);
163 return this->got_->data_size();
164 }
165
166 private:
167
168 // The class which scans relocations.
32b769e1 169 class Scan
f5314dd5 170 {
32b769e1
DM		 171 public:
172 Scan()
173 : issued_non_pic_error_(false)
174 { }
175
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DM		 176 inline void
177 local(const General_options& options, Symbol_table* symtab,
178 Layout* layout, Target_sparc* target,
179 Sized_relobj<size, big_endian>* object,
180 unsigned int data_shndx,
181 Output_section* output_section,
182 const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type,
183 const elfcpp::Sym<size, big_endian>& lsym);
184
185 inline void
186 global(const General_options& options, Symbol_table* symtab,
187 Layout* layout, Target_sparc* target,
188 Sized_relobj<size, big_endian>* object,
189 unsigned int data_shndx,
190 Output_section* output_section,
191 const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type,
192 Symbol* gsym);
193
32b769e1 194 private:
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DM		 195 static void
196 unsupported_reloc_local(Sized_relobj<size, big_endian>*,
197 unsigned int r_type);
198
199 static void
200 unsupported_reloc_global(Sized_relobj<size, big_endian>*,
201 unsigned int r_type, Symbol*);
202
203 static void
204 generate_tls_call(Symbol_table* symtab, Layout* layout,
205 Target_sparc* target);
32b769e1
DM		 206
207 void
208 check_non_pic(Relobj*, unsigned int r_type);
209
210 // Whether we have issued an error about a non-PIC compilation.
211 bool issued_non_pic_error_;
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DM		 212 };
213
214 // The class which implements relocation.
215 class Relocate
216 {
217 public:
218 Relocate()
219 : ignore_gd_add_(false)
220 { }
221
222 ~Relocate()
223 {
224 if (this->ignore_gd_add_)
225 {
226 // FIXME: This needs to specify the location somehow.
227 gold_error(_("missing expected TLS relocation"));
228 }
229 }
230
231 // Do a relocation. Return false if the caller should not issue
232 // any warnings about this relocation.
233 inline bool
234 relocate(const Relocate_info<size, big_endian>*, Target_sparc*,
031cdbed
ILT		 235 Output_section*, size_t relnum,
236 const elfcpp::Rela<size, big_endian>&,
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DM		 237 unsigned int r_type, const Sized_symbol<size>*,
238 const Symbol_value<size>*,
239 unsigned char*,
240 typename elfcpp::Elf_types<size>::Elf_Addr,
241 section_size_type);
242
243 private:
244 // Do a TLS relocation.
245 inline void
246 relocate_tls(const Relocate_info<size, big_endian>*, Target_sparc* target,
247 size_t relnum, const elfcpp::Rela<size, big_endian>&,
248 unsigned int r_type, const Sized_symbol<size>*,
249 const Symbol_value<size>*,
250 unsigned char*,
251 typename elfcpp::Elf_types<size>::Elf_Addr,
252 section_size_type);
253
254 // Ignore the next relocation which should be R_SPARC_TLS_GD_ADD
255 bool ignore_gd_add_;
256 };
257
258 // A class which returns the size required for a relocation type,
259 // used while scanning relocs during a relocatable link.
260 class Relocatable_size_for_reloc
261 {
262 public:
263 unsigned int
264 get_size_for_reloc(unsigned int, Relobj*);
265 };
266
267 // Get the GOT section, creating it if necessary.
268 Output_data_got<size, big_endian>*
269 got_section(Symbol_table*, Layout*);
270
271 // Create a PLT entry for a global symbol.
272 void
273 make_plt_entry(Symbol_table*, Layout*, Symbol*);
274
275 // Create a GOT entry for the TLS module index.
276 unsigned int
277 got_mod_index_entry(Symbol_table* symtab, Layout* layout,
278 Sized_relobj<size, big_endian>* object);
279
280 // Return the gsym for "__tls_get_addr". Cache if not already
281 // cached.
282 Symbol*
283 tls_get_addr_sym(Symbol_table* symtab)
284 {
285 if (!this->tls_get_addr_sym_)
286 this->tls_get_addr_sym_ = symtab->lookup("__tls_get_addr", NULL);
287 gold_assert(this->tls_get_addr_sym_);
288 return this->tls_get_addr_sym_;
289 }
290
291 // Get the PLT section.
292 const Output_data_plt_sparc<size, big_endian>*
293 plt_section() const
294 {
295 gold_assert(this->plt_ != NULL);
296 return this->plt_;
297 }
298
299 // Get the dynamic reloc section, creating it if necessary.
300 Reloc_section*
301 rela_dyn_section(Layout*);
302
303 // Return true if the symbol may need a COPY relocation.
304 // References from an executable object to non-function symbols
305 // defined in a dynamic object may need a COPY relocation.
306 bool
307 may_need_copy_reloc(Symbol* gsym)
308 {
309 return (!parameters->options().shared()
310 && gsym->is_from_dynobj()
311 && gsym->type() != elfcpp::STT_FUNC);
312 }
313
314 // Copy a relocation against a global symbol.
315 void
ef9beddf
ILT		 316 copy_reloc(Symbol_table* symtab, Layout* layout,
317 Sized_relobj<size, big_endian>* object,
12c0daef
ILT		 318 unsigned int shndx, Output_section* output_section,
319 Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc)
320 {
321 this->copy_relocs_.copy_reloc(symtab, layout,
322 symtab->get_sized_symbol<size>(sym),
323 object, shndx, output_section,
324 reloc, this->rela_dyn_section(layout));
325 }
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DM		 326
327 // Information about this specific target which we pass to the
328 // general Target structure.
329 static Target::Target_info sparc_info;
330
331 // The types of GOT entries needed for this platform.
332 enum Got_type
333 {
334 GOT_TYPE_STANDARD = 0, // GOT entry for a regular symbol
335 GOT_TYPE_TLS_OFFSET = 1, // GOT entry for TLS offset
336 GOT_TYPE_TLS_PAIR = 2, // GOT entry for TLS module/offset pair
337 };
338
339 // The GOT section.
340 Output_data_got<size, big_endian>* got_;
341 // The PLT section.
342 Output_data_plt_sparc<size, big_endian>* plt_;
343 // The dynamic reloc section.
344 Reloc_section* rela_dyn_;
345 // Relocs saved to avoid a COPY reloc.
12c0daef 346 Copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_;
f5314dd5
DM		 347 // Space for variables copied with a COPY reloc.
348 Output_data_space* dynbss_;
349 // Offset of the GOT entry for the TLS module index;
350 unsigned int got_mod_index_offset_;
351 // Cached pointer to __tls_get_addr symbol
352 Symbol* tls_get_addr_sym_;
353};
354
355template<>
356Target::Target_info Target_sparc<32, true>::sparc_info =
357{
358 32, // size
359 true, // is_big_endian
360 elfcpp::EM_SPARC, // machine_code
361 false, // has_make_symbol
362 false, // has_resolve
363 false, // has_code_fill
364 true, // is_default_stack_executable
365 '\0', // wrap_char
366 "/usr/lib/ld.so.1", // dynamic_linker
367 0x00010000, // default_text_segment_address
368 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
369 8 * 1024 // common_pagesize (overridable by -z common-page-size)
370};
371
372template<>
373Target::Target_info Target_sparc<64, true>::sparc_info =
374{
375 64, // size
376 true, // is_big_endian
377 elfcpp::EM_SPARCV9, // machine_code
378 false, // has_make_symbol
379 false, // has_resolve
380 false, // has_code_fill
381 true, // is_default_stack_executable
382 '\0', // wrap_char
383 "/usr/lib/sparcv9/ld.so.1", // dynamic_linker
384 0x100000, // default_text_segment_address
385 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
386 8 * 1024 // common_pagesize (overridable by -z common-page-size)
387};
388
389// We have to take care here, even when operating in little-endian
390// mode, sparc instructions are still big endian.
391template<int size, bool big_endian>
392class Sparc_relocate_functions
393{
394private:
395 // Do a simple relocation with the addend in the relocation.
396 template<int valsize>
397 static inline void
398 rela(unsigned char* view,
399 unsigned int right_shift,
400 typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
401 typename elfcpp::Swap<size, big_endian>::Valtype value,
402 typename elfcpp::Swap<size, big_endian>::Valtype addend)
403 {
404 typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
405 Valtype* wv = reinterpret_cast<Valtype*>(view);
406 Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
407 Valtype reloc = ((value + addend) >> right_shift);
408
409 val &= ~dst_mask;
410 reloc &= dst_mask;
411
412 elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
413 }
414
415 // Do a simple relocation using a symbol value with the addend in
416 // the relocation.
417 template<int valsize>
418 static inline void
419 rela(unsigned char* view,
420 unsigned int right_shift,
421 typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
422 const Sized_relobj<size, big_endian>* object,
423 const Symbol_value<size>* psymval,
424 typename elfcpp::Swap<valsize, big_endian>::Valtype addend)
425 {
426 typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
427 Valtype* wv = reinterpret_cast<Valtype*>(view);
428 Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
429 Valtype reloc = (psymval->value(object, addend) >> right_shift);
430
431 val &= ~dst_mask;
432 reloc &= dst_mask;
433
434 elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
435 }
436
437 // Do a simple relocation using a symbol value with the addend in
438 // the relocation, unaligned.
439 template<int valsize>
440 static inline void
441 rela_ua(unsigned char* view,
442 unsigned int right_shift, elfcpp::Elf_Xword dst_mask,
443 const Sized_relobj<size, big_endian>* object,
444 const Symbol_value<size>* psymval,
445 typename elfcpp::Swap<size, big_endian>::Valtype addend)
446 {
447 typedef typename elfcpp::Swap_unaligned<valsize,
448 big_endian>::Valtype Valtype;
449 unsigned char* wv = view;
450 Valtype val = elfcpp::Swap_unaligned<valsize, big_endian>::readval(wv);
451 Valtype reloc = (psymval->value(object, addend) >> right_shift);
452
453 val &= ~dst_mask;
454 reloc &= dst_mask;
455
456 elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, val | reloc);
457 }
458
459 // Do a simple PC relative relocation with a Symbol_value with the
460 // addend in the relocation.
461 template<int valsize>
462 static inline void
463 pcrela(unsigned char* view,
464 unsigned int right_shift,
465 typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
466 const Sized_relobj<size, big_endian>* object,
467 const Symbol_value<size>* psymval,
468 typename elfcpp::Swap<size, big_endian>::Valtype addend,
469 typename elfcpp::Elf_types<size>::Elf_Addr address)
470 {
471 typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
472 Valtype* wv = reinterpret_cast<Valtype*>(view);
473 Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
474 Valtype reloc = ((psymval->value(object, addend) - address)
475 >> right_shift);
476
477 val &= ~dst_mask;
478 reloc &= dst_mask;
479
480 elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
481 }
482
483 template<int valsize>
484 static inline void
485 pcrela_unaligned(unsigned char* view,
486 const Sized_relobj<size, big_endian>* object,
487 const Symbol_value<size>* psymval,
488 typename elfcpp::Swap<size, big_endian>::Valtype addend,
489 typename elfcpp::Elf_types<size>::Elf_Addr address)
490 {
491 typedef typename elfcpp::Swap_unaligned<valsize,
492 big_endian>::Valtype Valtype;
493 unsigned char* wv = view;
494 Valtype reloc = (psymval->value(object, addend) - address);
495
496 elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, reloc);
497 }
498
499 typedef Sparc_relocate_functions<size, big_endian> This;
500 typedef Sparc_relocate_functions<size, true> This_insn;
501
502public:
503 // R_SPARC_WDISP30: (Symbol + Addend - Address) >> 2
504 static inline void
505 wdisp30(unsigned char* view,
506 const Sized_relobj<size, big_endian>* object,
507 const Symbol_value<size>* psymval,
508 typename elfcpp::Elf_types<size>::Elf_Addr addend,
509 typename elfcpp::Elf_types<size>::Elf_Addr address)
510 {
511 This_insn::template pcrela<32>(view, 2, 0x3fffffff, object,
512 psymval, addend, address);
513 }
514
515 // R_SPARC_WDISP22: (Symbol + Addend - Address) >> 2
516 static inline void
517 wdisp22(unsigned char* view,
518 const Sized_relobj<size, big_endian>* object,
519 const Symbol_value<size>* psymval,
520 typename elfcpp::Elf_types<size>::Elf_Addr addend,
521 typename elfcpp::Elf_types<size>::Elf_Addr address)
522 {
523 This_insn::template pcrela<32>(view, 2, 0x003fffff, object,
524 psymval, addend, address);
525 }
526
527 // R_SPARC_WDISP19: (Symbol + Addend - Address) >> 2
528 static inline void
529 wdisp19(unsigned char* view,
530 const Sized_relobj<size, big_endian>* object,
531 const Symbol_value<size>* psymval,
532 typename elfcpp::Elf_types<size>::Elf_Addr addend,
533 typename elfcpp::Elf_types<size>::Elf_Addr address)
534 {
535 This_insn::template pcrela<32>(view, 2, 0x0007ffff, object,
536 psymval, addend, address);
537 }
538
539 // R_SPARC_WDISP16: (Symbol + Addend - Address) >> 2
540 static inline void
541 wdisp16(unsigned char* view,
542 const Sized_relobj<size, big_endian>* object,
543 const Symbol_value<size>* psymval,
544 typename elfcpp::Elf_types<size>::Elf_Addr addend,
545 typename elfcpp::Elf_types<size>::Elf_Addr address)
546 {
547 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
548 Valtype* wv = reinterpret_cast<Valtype*>(view);
549 Valtype val = elfcpp::Swap<32, true>::readval(wv);
550 Valtype reloc = ((psymval->value(object, addend) - address)
551 >> 2);
552
553 // The relocation value is split between the low 14 bits,
554 // and bits 20-21.
555 val &= ~((0x3 << 20) | 0x3fff);
556 reloc = (((reloc & 0xc000) << (20 - 14))
557 | (reloc & 0x3ffff));
558
559 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
560 }
561
562 // R_SPARC_PC22: (Symbol + Addend - Address) >> 10
563 static inline void
564 pc22(unsigned char* view,
565 const Sized_relobj<size, big_endian>* object,
566 const Symbol_value<size>* psymval,
567 typename elfcpp::Elf_types<size>::Elf_Addr addend,
568 typename elfcpp::Elf_types<size>::Elf_Addr address)
569 {
570 This_insn::template pcrela<32>(view, 10, 0x003fffff, object,
571 psymval, addend, address);
572 }
573
574 // R_SPARC_PC10: (Symbol + Addend - Address) & 0x3ff
575 static inline void
576 pc10(unsigned char* view,
577 const Sized_relobj<size, big_endian>* object,
578 const Symbol_value<size>* psymval,
579 typename elfcpp::Elf_types<size>::Elf_Addr addend,
580 typename elfcpp::Elf_types<size>::Elf_Addr address)
581 {
582 This_insn::template pcrela<32>(view, 0, 0x000003ff, object,
583 psymval, addend, address);
584 }
585
586 // R_SPARC_HI22: (Symbol + Addend) >> 10
587 static inline void
588 hi22(unsigned char* view,
589 typename elfcpp::Elf_types<size>::Elf_Addr value,
590 typename elfcpp::Elf_types<size>::Elf_Addr addend)
591 {
592 This_insn::template rela<32>(view, 10, 0x003fffff, value, addend);
593 }
594
595 // R_SPARC_HI22: (Symbol + Addend) >> 10
596 static inline void
597 hi22(unsigned char* view,
598 const Sized_relobj<size, big_endian>* object,
599 const Symbol_value<size>* psymval,
600 typename elfcpp::Elf_types<size>::Elf_Addr addend)
601 {
602 This_insn::template rela<32>(view, 10, 0x003fffff, object, psymval, addend);
603 }
604
605 // R_SPARC_PCPLT22: (Symbol + Addend - Address) >> 10
606 static inline void
607 pcplt22(unsigned char* view,
608 const Sized_relobj<size, big_endian>* object,
609 const Symbol_value<size>* psymval,
610 typename elfcpp::Elf_types<size>::Elf_Addr addend,
611 typename elfcpp::Elf_types<size>::Elf_Addr address)
612 {
613 This_insn::template pcrela<32>(view, 10, 0x003fffff, object,
614 psymval, addend, address);
615 }
616
617 // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
618 static inline void
619 lo10(unsigned char* view,
620 typename elfcpp::Elf_types<size>::Elf_Addr value,
621 typename elfcpp::Elf_types<size>::Elf_Addr addend)
622 {
623 This_insn::template rela<32>(view, 0, 0x000003ff, value, addend);
624 }
625
626 // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
627 static inline void
628 lo10(unsigned char* view,
629 const Sized_relobj<size, big_endian>* object,
630 const Symbol_value<size>* psymval,
631 typename elfcpp::Elf_types<size>::Elf_Addr addend)
632 {
633 This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend);
634 }
635
636 // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
637 static inline void
638 lo10(unsigned char* view,
639 const Sized_relobj<size, big_endian>* object,
640 const Symbol_value<size>* psymval,
641 typename elfcpp::Elf_types<size>::Elf_Addr addend,
642 typename elfcpp::Elf_types<size>::Elf_Addr address)
643 {
644 This_insn::template pcrela<32>(view, 0, 0x000003ff, object,
645 psymval, addend, address);
646 }
647
648 // R_SPARC_OLO10: ((Symbol + Addend) & 0x3ff) + Addend2
649 static inline void
650 olo10(unsigned char* view,
651 const Sized_relobj<size, big_endian>* object,
652 const Symbol_value<size>* psymval,
653 typename elfcpp::Elf_types<size>::Elf_Addr addend,
654 typename elfcpp::Elf_types<size>::Elf_Addr addend2)
655 {
656 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
657 Valtype* wv = reinterpret_cast<Valtype*>(view);
658 Valtype val = elfcpp::Swap<32, true>::readval(wv);
659 Valtype reloc = psymval->value(object, addend);
660
661 val &= ~0x1fff;
662 reloc &= 0x3ff;
663 reloc += addend2;
664 reloc &= 0x1fff;
665
666 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
667 }
668
669 // R_SPARC_22: (Symbol + Addend)
670 static inline void
671 rela32_22(unsigned char* view,
672 const Sized_relobj<size, big_endian>* object,
673 const Symbol_value<size>* psymval,
674 typename elfcpp::Elf_types<size>::Elf_Addr addend)
675 {
676 This_insn::template rela<32>(view, 0, 0x003fffff, object, psymval, addend);
677 }
678
679 // R_SPARC_13: (Symbol + Addend)
680 static inline void
681 rela32_13(unsigned char* view,
682 typename elfcpp::Elf_types<size>::Elf_Addr value,
683 typename elfcpp::Elf_types<size>::Elf_Addr addend)
684 {
685 This_insn::template rela<32>(view, 0, 0x00001fff, value, addend);
686 }
687
688 // R_SPARC_13: (Symbol + Addend)
689 static inline void
690 rela32_13(unsigned char* view,
691 const Sized_relobj<size, big_endian>* object,
692 const Symbol_value<size>* psymval,
693 typename elfcpp::Elf_types<size>::Elf_Addr addend)
694 {
695 This_insn::template rela<32>(view, 0, 0x00001fff, object, psymval, addend);
696 }
697
698 // R_SPARC_UA16: (Symbol + Addend)
699 static inline void
700 ua16(unsigned char* view,
701 const Sized_relobj<size, big_endian>* object,
702 const Symbol_value<size>* psymval,
703 typename elfcpp::Elf_types<size>::Elf_Addr addend)
704 {
705 This::template rela_ua<16>(view, 0, 0xffff, object, psymval, addend);
706 }
707
708 // R_SPARC_UA32: (Symbol + Addend)
709 static inline void
710 ua32(unsigned char* view,
711 const Sized_relobj<size, big_endian>* object,
712 const Symbol_value<size>* psymval,
713 typename elfcpp::Elf_types<size>::Elf_Addr addend)
714 {
715 This::template rela_ua<32>(view, 0, 0xffffffff, object, psymval, addend);
716 }
717
718 // R_SPARC_UA64: (Symbol + Addend)
719 static inline void
720 ua64(unsigned char* view,
721 const Sized_relobj<size, big_endian>* object,
722 const Symbol_value<size>* psymval,
723 typename elfcpp::Elf_types<size>::Elf_Addr addend)
724 {
725 This::template rela_ua<64>(view, 0, ~(elfcpp::Elf_Xword) 0,
726 object, psymval, addend);
727 }
728
729 // R_SPARC_DISP8: (Symbol + Addend - Address)
730 static inline void
731 disp8(unsigned char* view,
732 const Sized_relobj<size, big_endian>* object,
733 const Symbol_value<size>* psymval,
734 typename elfcpp::Elf_types<size>::Elf_Addr addend,
735 typename elfcpp::Elf_types<size>::Elf_Addr address)
736 {
737 This::template pcrela_unaligned<8>(view, object, psymval,
738 addend, address);
739 }
740
741 // R_SPARC_DISP16: (Symbol + Addend - Address)
742 static inline void
743 disp16(unsigned char* view,
744 const Sized_relobj<size, big_endian>* object,
745 const Symbol_value<size>* psymval,
746 typename elfcpp::Elf_types<size>::Elf_Addr addend,
747 typename elfcpp::Elf_types<size>::Elf_Addr address)
748 {
749 This::template pcrela_unaligned<16>(view, object, psymval,
750 addend, address);
751 }
752
753 // R_SPARC_DISP32: (Symbol + Addend - Address)
754 static inline void
755 disp32(unsigned char* view,
756 const Sized_relobj<size, big_endian>* object,
757 const Symbol_value<size>* psymval,
758 typename elfcpp::Elf_types<size>::Elf_Addr addend,
759 typename elfcpp::Elf_types<size>::Elf_Addr address)
760 {
761 This::template pcrela_unaligned<32>(view, object, psymval,
762 addend, address);
763 }
764
765 // R_SPARC_DISP64: (Symbol + Addend - Address)
766 static inline void
767 disp64(unsigned char* view,
768 const Sized_relobj<size, big_endian>* object,
769 const Symbol_value<size>* psymval,
770 elfcpp::Elf_Xword addend,
771 typename elfcpp::Elf_types<size>::Elf_Addr address)
772 {
773 This::template pcrela_unaligned<64>(view, object, psymval,
774 addend, address);
775 }
776
777 // R_SPARC_H44: (Symbol + Addend) >> 22
778 static inline void
779 h44(unsigned char* view,
780 const Sized_relobj<size, big_endian>* object,
781 const Symbol_value<size>* psymval,
782 typename elfcpp::Elf_types<size>::Elf_Addr addend)
783 {
784 This_insn::template rela<32>(view, 22, 0x003fffff, object, psymval, addend);
785 }
786
787 // R_SPARC_M44: ((Symbol + Addend) >> 12) & 0x3ff
788 static inline void
789 m44(unsigned char* view,
790 const Sized_relobj<size, big_endian>* object,
791 const Symbol_value<size>* psymval,
792 typename elfcpp::Elf_types<size>::Elf_Addr addend)
793 {
794 This_insn::template rela<32>(view, 12, 0x000003ff, object, psymval, addend);
795 }
796
797 // R_SPARC_L44: (Symbol + Addend) & 0xfff
798 static inline void
799 l44(unsigned char* view,
800 const Sized_relobj<size, big_endian>* object,
801 const Symbol_value<size>* psymval,
802 typename elfcpp::Elf_types<size>::Elf_Addr addend)
803 {
804 This_insn::template rela<32>(view, 0, 0x00000fff, object, psymval, addend);
805 }
806
807 // R_SPARC_HH22: (Symbol + Addend) >> 42
808 static inline void
809 hh22(unsigned char* view,
810 const Sized_relobj<size, big_endian>* object,
811 const Symbol_value<size>* psymval,
812 typename elfcpp::Elf_types<size>::Elf_Addr addend)
813 {
814 This_insn::template rela<32>(view, 42, 0x003fffff, object, psymval, addend);
815 }
816
817 // R_SPARC_PC_HH22: (Symbol + Addend - Address) >> 42
818 static inline void
819 pc_hh22(unsigned char* view,
820 const Sized_relobj<size, big_endian>* object,
821 const Symbol_value<size>* psymval,
822 typename elfcpp::Elf_types<size>::Elf_Addr addend,
823 typename elfcpp::Elf_types<size>::Elf_Addr address)
824 {
825 This_insn::template pcrela<32>(view, 42, 0x003fffff, object,
826 psymval, addend, address);
827 }
828
829 // R_SPARC_HM10: ((Symbol + Addend) >> 32) & 0x3ff
830 static inline void
831 hm10(unsigned char* view,
832 const Sized_relobj<size, big_endian>* object,
833 const Symbol_value<size>* psymval,
834 typename elfcpp::Elf_types<size>::Elf_Addr addend)
835 {
836 This_insn::template rela<32>(view, 32, 0x000003ff, object, psymval, addend);
837 }
838
839 // R_SPARC_PC_HM10: ((Symbol + Addend - Address) >> 32) & 0x3ff
840 static inline void
841 pc_hm10(unsigned char* view,
842 const Sized_relobj<size, big_endian>* object,
843 const Symbol_value<size>* psymval,
844 typename elfcpp::Elf_types<size>::Elf_Addr addend,
845 typename elfcpp::Elf_types<size>::Elf_Addr address)
846 {
847 This_insn::template pcrela<32>(view, 32, 0x000003ff, object,
848 psymval, addend, address);
849 }
850
851 // R_SPARC_11: (Symbol + Addend)
852 static inline void
853 rela32_11(unsigned char* view,
854 const Sized_relobj<size, big_endian>* object,
855 const Symbol_value<size>* psymval,
856 typename elfcpp::Elf_types<size>::Elf_Addr addend)
857 {
858 This_insn::template rela<32>(view, 0, 0x000007ff, object, psymval, addend);
859 }
860
861 // R_SPARC_10: (Symbol + Addend)
862 static inline void
863 rela32_10(unsigned char* view,
864 const Sized_relobj<size, big_endian>* object,
865 const Symbol_value<size>* psymval,
866 typename elfcpp::Elf_types<size>::Elf_Addr addend)
867 {
868 This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend);
869 }
870
871 // R_SPARC_7: (Symbol + Addend)
872 static inline void
873 rela32_7(unsigned char* view,
874 const Sized_relobj<size, big_endian>* object,
875 const Symbol_value<size>* psymval,
876 typename elfcpp::Elf_types<size>::Elf_Addr addend)
877 {
878 This_insn::template rela<32>(view, 0, 0x0000007f, object, psymval, addend);
879 }
880
881 // R_SPARC_6: (Symbol + Addend)
882 static inline void
883 rela32_6(unsigned char* view,
884 const Sized_relobj<size, big_endian>* object,
885 const Symbol_value<size>* psymval,
886 typename elfcpp::Elf_types<size>::Elf_Addr addend)
887 {
888 This_insn::template rela<32>(view, 0, 0x0000003f, object, psymval, addend);
889 }
890
891 // R_SPARC_5: (Symbol + Addend)
892 static inline void
893 rela32_5(unsigned char* view,
894 const Sized_relobj<size, big_endian>* object,
895 const Symbol_value<size>* psymval,
896 typename elfcpp::Elf_types<size>::Elf_Addr addend)
897 {
898 This_insn::template rela<32>(view, 0, 0x0000001f, object, psymval, addend);
899 }
900
901 // R_SPARC_TLS_LDO_HIX22: @dtpoff(Symbol + Addend) >> 10
902 static inline void
903 ldo_hix22(unsigned char* view,
904 typename elfcpp::Elf_types<size>::Elf_Addr value,
905 typename elfcpp::Elf_types<size>::Elf_Addr addend)
906 {
907 This_insn::hi22(view, value, addend);
908 }
909
910 // R_SPARC_TLS_LDO_LOX10: @dtpoff(Symbol + Addend) & 0x3ff
911 static inline void
912 ldo_lox10(unsigned char* view,
913 typename elfcpp::Elf_types<size>::Elf_Addr value,
914 typename elfcpp::Elf_types<size>::Elf_Addr addend)
915 {
916 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
917 Valtype* wv = reinterpret_cast<Valtype*>(view);
918 Valtype val = elfcpp::Swap<32, true>::readval(wv);
919 Valtype reloc = (value + addend);
920
921 val &= ~0x1fff;
922 reloc &= 0x3ff;
923
924 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
925 }
926
927 // R_SPARC_TLS_LE_HIX22: (@tpoff(Symbol + Addend) ^ 0xffffffffffffffff) >> 10
928 static inline void
929 hix22(unsigned char* view,
930 typename elfcpp::Elf_types<size>::Elf_Addr value,
931 typename elfcpp::Elf_types<size>::Elf_Addr addend)
932 {
933 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
934 Valtype* wv = reinterpret_cast<Valtype*>(view);
935 Valtype val = elfcpp::Swap<32, true>::readval(wv);
936 Valtype reloc = (value + addend);
937
938 val &= ~0x3fffff;
939
940 reloc ^= ~(Valtype)0;
941 reloc >>= 10;
942
943 reloc &= 0x3fffff;
944
945 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
946 }
947
948 // R_SPARC_HIX22: ((Symbol + Addend) ^ 0xffffffffffffffff) >> 10
949 static inline void
950 hix22(unsigned char* view,
951 const Sized_relobj<size, big_endian>* object,
952 const Symbol_value<size>* psymval,
953 typename elfcpp::Elf_types<size>::Elf_Addr addend)
954 {
955 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
956 Valtype* wv = reinterpret_cast<Valtype*>(view);
957 Valtype val = elfcpp::Swap<32, true>::readval(wv);
958 Valtype reloc = psymval->value(object, addend);
959
960 val &= ~0x3fffff;
961
962 reloc ^= ~(Valtype)0;
963 reloc >>= 10;
964
965 reloc &= 0x3fffff;
966
967 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
968 }
969
970
971 // R_SPARC_TLS_LE_LOX10: (@tpoff(Symbol + Addend) & 0x3ff) | 0x1c00
972 static inline void
973 lox10(unsigned char* view,
974 typename elfcpp::Elf_types<size>::Elf_Addr value,
975 typename elfcpp::Elf_types<size>::Elf_Addr addend)
976 {
977 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
978 Valtype* wv = reinterpret_cast<Valtype*>(view);
979 Valtype val = elfcpp::Swap<32, true>::readval(wv);
980 Valtype reloc = (value + addend);
981
982 val &= ~0x1fff;
983 reloc &= 0x3ff;
984 reloc |= 0x1c00;
985
986 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
987 }
988
989 // R_SPARC_LOX10: ((Symbol + Addend) & 0x3ff) | 0x1c00
990 static inline void
991 lox10(unsigned char* view,
992 const Sized_relobj<size, big_endian>* object,
993 const Symbol_value<size>* psymval,
994 typename elfcpp::Elf_types<size>::Elf_Addr addend)
995 {
996 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
997 Valtype* wv = reinterpret_cast<Valtype*>(view);
998 Valtype val = elfcpp::Swap<32, true>::readval(wv);
999 Valtype reloc = psymval->value(object, addend);
1000
1001 val &= ~0x1fff;
1002 reloc &= 0x3ff;
1003 reloc |= 0x1c00;
1004
1005 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
1006 }
1007};
1008
1009// Get the GOT section, creating it if necessary.
1010
1011template<int size, bool big_endian>
1012Output_data_got<size, big_endian>*
1013Target_sparc<size, big_endian>::got_section(Symbol_table* symtab,
1014 Layout* layout)
1015{
1016 if (this->got_ == NULL)
1017 {
1018 gold_assert(symtab != NULL && layout != NULL);
1019
1020 this->got_ = new Output_data_got<size, big_endian>();
1021
9f1d377b
ILT		 1022 Output_section* os;
1023 os = layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS,
1024 (elfcpp::SHF_ALLOC
1025 | elfcpp::SHF_WRITE),
1026 this->got_);
1027 os->set_is_relro();
f5314dd5
DM		 1028
1029 // Define _GLOBAL_OFFSET_TABLE_ at the start of the .got section.
1030 symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL,
1031 this->got_,
1032 0, 0, elfcpp::STT_OBJECT,
1033 elfcpp::STB_LOCAL,
1034 elfcpp::STV_HIDDEN, 0,
1035 false, false);
1036 }
1037
1038 return this->got_;
1039}
1040
1041// Get the dynamic reloc section, creating it if necessary.
1042
1043template<int size, bool big_endian>
1044typename Target_sparc<size, big_endian>::Reloc_section*
1045Target_sparc<size, big_endian>::rela_dyn_section(Layout* layout)
1046{
1047 if (this->rela_dyn_ == NULL)
1048 {
1049 gold_assert(layout != NULL);
d98bc257 1050 this->rela_dyn_ = new Reloc_section(parameters->options().combreloc());
f5314dd5
DM		 1051 layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA,
1052 elfcpp::SHF_ALLOC, this->rela_dyn_);
1053 }
1054 return this->rela_dyn_;
1055}
1056
1057// A class to handle the PLT data.
1058
1059template<int size, bool big_endian>
1060class Output_data_plt_sparc : public Output_section_data
1061{
1062 public:
1063 typedef Output_data_reloc<elfcpp::SHT_RELA, true,
1064 size, big_endian> Reloc_section;
1065
1066 Output_data_plt_sparc(Layout*);
1067
1068 // Add an entry to the PLT.
1069 void add_entry(Symbol* gsym);
1070
1071 // Return the .rela.plt section data.
1072 const Reloc_section* rel_plt() const
1073 {
1074 return this->rel_;
1075 }
1076
1077 protected:
1078 void do_adjust_output_section(Output_section* os);
1079
7d9e3d98
ILT		 1080 // Write to a map file.
1081 void
1082 do_print_to_mapfile(Mapfile* mapfile) const
1083 { mapfile->print_output_data(this, _("** PLT")); }
1084
f5314dd5
DM		 1085 private:
1086 // The size of an entry in the PLT.
1087 static const int base_plt_entry_size = (size == 32 ? 12 : 32);
1088
1089 static const unsigned int plt_entries_per_block = 160;
1090 static const unsigned int plt_insn_chunk_size = 24;
1091 static const unsigned int plt_pointer_chunk_size = 8;
1092 static const unsigned int plt_block_size =
1093 (plt_entries_per_block
1094 * (plt_insn_chunk_size + plt_pointer_chunk_size));
1095
1096 // Set the final size.
1097 void
1098 set_final_data_size()
1099 {
1100 unsigned int full_count = this->count_ + 4;
1101 unsigned int extra = (size == 32 ? 4 : 0);
1102
1103 if (size == 32 || full_count < 32768)
1104 this->set_data_size((full_count * base_plt_entry_size) + extra);
1105 else
1106 {
1107 unsigned int ext_cnt = full_count - 32768;
1108
1109 this->set_data_size((32768 * base_plt_entry_size)
1110 + (ext_cnt
1111 * (plt_insn_chunk_size
1112 + plt_pointer_chunk_size)));
1113 }
1114 }
1115
1116 // Write out the PLT data.
1117 void
1118 do_write(Output_file*);
1119
1120 // The reloc section.
1121 Reloc_section* rel_;
1122 // The number of PLT entries.
1123 unsigned int count_;
1124};
1125
4f2a9edd
ILT		 1126// Define the constants as required by C++ standard.
1127
1128template<int size, bool big_endian>
1129const int Output_data_plt_sparc<size, big_endian>::base_plt_entry_size;
1130
1131template<int size, bool big_endian>
1132const unsigned int
1133Output_data_plt_sparc<size, big_endian>::plt_entries_per_block;
1134
1135template<int size, bool big_endian>
1136const unsigned int Output_data_plt_sparc<size, big_endian>::plt_insn_chunk_size;
1137
1138template<int size, bool big_endian>
1139const unsigned int
1140Output_data_plt_sparc<size, big_endian>::plt_pointer_chunk_size;
1141
1142template<int size, bool big_endian>
1143const unsigned int Output_data_plt_sparc<size, big_endian>::plt_block_size;
1144
f5314dd5
DM		 1145// Create the PLT section. The ordinary .got section is an argument,
1146// since we need to refer to the start.
1147
1148template<int size, bool big_endian>
1149Output_data_plt_sparc<size, big_endian>::Output_data_plt_sparc(Layout* layout)
1150 : Output_section_data(size == 32 ? 4 : 8), count_(0)
1151{
d98bc257 1152 this->rel_ = new Reloc_section(false);
f5314dd5
DM		 1153 layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA,
1154 elfcpp::SHF_ALLOC, this->rel_);
1155}
1156
1157template<int size, bool big_endian>
1158void
1159Output_data_plt_sparc<size, big_endian>::do_adjust_output_section(Output_section* os)
1160{
1161 os->set_entsize(0);
1162}
1163
1164// Add an entry to the PLT.
1165
1166template<int size, bool big_endian>
1167void
1168Output_data_plt_sparc<size, big_endian>::add_entry(Symbol* gsym)
1169{
1170 gold_assert(!gsym->has_plt_offset());
1171
1172 unsigned int index = this->count_ + 4;
1173 section_offset_type plt_offset;
1174
1175 if (size == 32 || index < 32768)
1176 plt_offset = index * base_plt_entry_size;
1177 else
1178 {
1179 unsigned int ext_index = index - 32768;
1180
1181 plt_offset = (32768 * base_plt_entry_size)
1182 + ((ext_index / plt_entries_per_block)
1183 * plt_block_size)
1184 + ((ext_index % plt_entries_per_block)
1185 * plt_insn_chunk_size);
1186 }
1187
1188 gsym->set_plt_offset(plt_offset);
1189
1190 ++this->count_;
1191
1192 // Every PLT entry needs a reloc.
1193 gsym->set_needs_dynsym_entry();
1194 this->rel_->add_global(gsym, elfcpp::R_SPARC_JMP_SLOT, this,
1195 plt_offset, 0);
1196
1197 // Note that we don't need to save the symbol. The contents of the
1198 // PLT are independent of which symbols are used. The symbols only
1199 // appear in the relocations.
1200}
1201
1202static const unsigned int sparc_nop = 0x01000000;
1203static const unsigned int sparc_sethi_g1 = 0x03000000;
1204static const unsigned int sparc_branch_always = 0x30800000;
1205static const unsigned int sparc_branch_always_pt = 0x30680000;
1206static const unsigned int sparc_mov = 0x80100000;
1207static const unsigned int sparc_mov_g0_o0 = 0x90100000;
1208static const unsigned int sparc_mov_o7_g5 = 0x8a10000f;
1209static const unsigned int sparc_call_plus_8 = 0x40000002;
1210static const unsigned int sparc_ldx_o7_imm_g1 = 0xc25be000;
1211static const unsigned int sparc_jmpl_o7_g1_g1 = 0x83c3c001;
1212static const unsigned int sparc_mov_g5_o7 = 0x9e100005;
1213
1214// Write out the PLT.
1215
1216template<int size, bool big_endian>
1217void
1218Output_data_plt_sparc<size, big_endian>::do_write(Output_file* of)
1219{
1220 const off_t offset = this->offset();
1221 const section_size_type oview_size =
1222 convert_to_section_size_type(this->data_size());
1223 unsigned char* const oview = of->get_output_view(offset, oview_size);
1224 unsigned char* pov = oview;
1225
1226 memset(pov, 0, base_plt_entry_size * 4);
1227 pov += base_plt_entry_size * 4;
1228
1229 unsigned int plt_offset = base_plt_entry_size * 4;
1230 const unsigned int count = this->count_;
1231
1232 if (size == 64)
1233 {
1234 unsigned int limit;
1235
1236 limit = (count > 32768 ? 32768 : count);
1237
1238 for (unsigned int i = 0; i < limit; ++i)
1239 {
1240 elfcpp::Swap<32, true>::writeval(pov + 0x00,
1241 sparc_sethi_g1 + plt_offset);
1242 elfcpp::Swap<32, true>::writeval(pov + 0x04,
1243 sparc_branch_always_pt +
1244 (((base_plt_entry_size -
1245 (plt_offset + 4)) >> 2) &
1246 0x7ffff));
1247 elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop);
1248 elfcpp::Swap<32, true>::writeval(pov + 0x0c, sparc_nop);
1249 elfcpp::Swap<32, true>::writeval(pov + 0x10, sparc_nop);
1250 elfcpp::Swap<32, true>::writeval(pov + 0x14, sparc_nop);
1251 elfcpp::Swap<32, true>::writeval(pov + 0x18, sparc_nop);
1252 elfcpp::Swap<32, true>::writeval(pov + 0x1c, sparc_nop);
1253
1254 pov += base_plt_entry_size;
1255 plt_offset += base_plt_entry_size;
1256 }
1257
1258 if (count > 32768)
1259 {
1260 unsigned int ext_cnt = count - 32768;
1261 unsigned int blks = ext_cnt / plt_entries_per_block;
1262
1263 for (unsigned int i = 0; i < blks; ++i)
1264 {
1265 unsigned int data_off = (plt_entries_per_block
1266 * plt_insn_chunk_size) - 4;
1267
1268 for (unsigned int j = 0; j < plt_entries_per_block; ++j)
1269 {
1270 elfcpp::Swap<32, true>::writeval(pov + 0x00,
1271 sparc_mov_o7_g5);
1272 elfcpp::Swap<32, true>::writeval(pov + 0x04,
1273 sparc_call_plus_8);
1274 elfcpp::Swap<32, true>::writeval(pov + 0x08,
1275 sparc_nop);
1276 elfcpp::Swap<32, true>::writeval(pov + 0x0c,
1277 sparc_ldx_o7_imm_g1 +
1278 (data_off & 0x1fff));
1279 elfcpp::Swap<32, true>::writeval(pov + 0x10,
1280 sparc_jmpl_o7_g1_g1);
1281 elfcpp::Swap<32, true>::writeval(pov + 0x14,
1282 sparc_mov_g5_o7);
1283
1284 elfcpp::Swap<64, big_endian>::writeval(
1285 pov + 0x4 + data_off,
1286 (elfcpp::Elf_Xword) (oview - (pov + 0x04)));
1287
1288 pov += plt_insn_chunk_size;
1289 data_off -= 16;
1290 }
1291 }
1292
1293 unsigned int sub_blk_cnt = ext_cnt % plt_entries_per_block;
1294 for (unsigned int i = 0; i < sub_blk_cnt; ++i)
1295 {
1296 unsigned int data_off = (sub_blk_cnt
1297 * plt_insn_chunk_size) - 4;
1298
1299 for (unsigned int j = 0; j < plt_entries_per_block; ++j)
1300 {
1301 elfcpp::Swap<32, true>::writeval(pov + 0x00,
1302 sparc_mov_o7_g5);
1303 elfcpp::Swap<32, true>::writeval(pov + 0x04,
1304 sparc_call_plus_8);
1305 elfcpp::Swap<32, true>::writeval(pov + 0x08,
1306 sparc_nop);
1307 elfcpp::Swap<32, true>::writeval(pov + 0x0c,
1308 sparc_ldx_o7_imm_g1 +
1309 (data_off & 0x1fff));
1310 elfcpp::Swap<32, true>::writeval(pov + 0x10,
1311 sparc_jmpl_o7_g1_g1);
1312 elfcpp::Swap<32, true>::writeval(pov + 0x14,
1313 sparc_mov_g5_o7);
1314
1315 elfcpp::Swap<64, big_endian>::writeval(
1316 pov + 0x4 + data_off,
1317 (elfcpp::Elf_Xword) (oview - (pov + 0x04)));
1318
1319 pov += plt_insn_chunk_size;
1320 data_off -= 16;
1321 }
1322 }
1323 }
1324 }
1325 else
1326 {
1327 for (unsigned int i = 0; i < count; ++i)
1328 {
1329 elfcpp::Swap<32, true>::writeval(pov + 0x00,
1330 sparc_sethi_g1 + plt_offset);
1331 elfcpp::Swap<32, true>::writeval(pov + 0x04,
1332 sparc_branch_always +
1333 (((- (plt_offset + 4)) >> 2) &
1334 0x003fffff));
1335 elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop);
1336
1337 pov += base_plt_entry_size;
1338 plt_offset += base_plt_entry_size;
1339 }
1340
1341 elfcpp::Swap<32, true>::writeval(pov, sparc_nop);
1342 pov += 4;
1343 }
1344
1345 gold_assert(static_cast<section_size_type>(pov - oview) == oview_size);
1346
1347 of->write_output_view(offset, oview_size, oview);
1348}
1349
1350// Create a PLT entry for a global symbol.
1351
1352template<int size, bool big_endian>
1353void
1354Target_sparc<size, big_endian>::make_plt_entry(Symbol_table* symtab,
1355 Layout* layout,
1356 Symbol* gsym)
1357{
1358 if (gsym->has_plt_offset())
1359 return;
1360
1361 if (this->plt_ == NULL)
1362 {
1363 // Create the GOT sections first.
1364 this->got_section(symtab, layout);
1365
1366 this->plt_ = new Output_data_plt_sparc<size, big_endian>(layout);
1367 layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS,
1368 (elfcpp::SHF_ALLOC
1369 | elfcpp::SHF_EXECINSTR
1370 | elfcpp::SHF_WRITE),
1371 this->plt_);
1372
1373 // Define _PROCEDURE_LINKAGE_TABLE_ at the start of the .plt section.
1374 symtab->define_in_output_data("_PROCEDURE_LINKAGE_TABLE_", NULL,
1375 this->plt_,
1376 0, 0, elfcpp::STT_OBJECT,
1377 elfcpp::STB_LOCAL,
1378 elfcpp::STV_HIDDEN, 0,
1379 false, false);
1380 }
1381
1382 this->plt_->add_entry(gsym);
1383}
1384
1385// Create a GOT entry for the TLS module index.
1386
1387template<int size, bool big_endian>
1388unsigned int
1389Target_sparc<size, big_endian>::got_mod_index_entry(Symbol_table* symtab,
1390 Layout* layout,
1391 Sized_relobj<size, big_endian>* object)
1392{
1393 if (this->got_mod_index_offset_ == -1U)
1394 {
1395 gold_assert(symtab != NULL && layout != NULL && object != NULL);
1396 Reloc_section* rela_dyn = this->rela_dyn_section(layout);
1397 Output_data_got<size, big_endian>* got;
1398 unsigned int got_offset;
1399
1400 got = this->got_section(symtab, layout);
1401 got_offset = got->add_constant(0);
1402 rela_dyn->add_local(object, 0,
1403 (size == 64 ?
1404 elfcpp::R_SPARC_TLS_DTPMOD64 :
1405 elfcpp::R_SPARC_TLS_DTPMOD32), got,
1406 got_offset, 0);
1407 got->add_constant(0);
1408 this->got_mod_index_offset_ = got_offset;
1409 }
1410 return this->got_mod_index_offset_;
1411}
1412
f5314dd5
DM		 1413// Optimize the TLS relocation type based on what we know about the
1414// symbol. IS_FINAL is true if the final address of this symbol is
1415// known at link time.
1416
1417static tls::Tls_optimization
1418optimize_tls_reloc(bool is_final, int r_type)
1419{
1420 // If we are generating a shared library, then we can't do anything
1421 // in the linker.
1422 if (parameters->options().shared())
1423 return tls::TLSOPT_NONE;
1424
1425 switch (r_type)
1426 {
1427 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1428 case elfcpp::R_SPARC_TLS_GD_LO10:
1429 case elfcpp::R_SPARC_TLS_GD_ADD:
1430 case elfcpp::R_SPARC_TLS_GD_CALL:
1431 // These are General-Dynamic which permits fully general TLS
1432 // access. Since we know that we are generating an executable,
1433 // we can convert this to Initial-Exec. If we also know that
1434 // this is a local symbol, we can further switch to Local-Exec.
1435 if (is_final)
1436 return tls::TLSOPT_TO_LE;
1437 return tls::TLSOPT_TO_IE;
1438
1439 case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic
1440 case elfcpp::R_SPARC_TLS_LDM_LO10:
1441 case elfcpp::R_SPARC_TLS_LDM_ADD:
1442 case elfcpp::R_SPARC_TLS_LDM_CALL:
1443 // This is Local-Dynamic, which refers to a local symbol in the
1444 // dynamic TLS block. Since we know that we generating an
1445 // executable, we can switch to Local-Exec.
1446 return tls::TLSOPT_TO_LE;
1447
1448 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
1449 case elfcpp::R_SPARC_TLS_LDO_LOX10:
1450 case elfcpp::R_SPARC_TLS_LDO_ADD:
1451 // Another type of Local-Dynamic relocation.
1452 return tls::TLSOPT_TO_LE;
1453
1454 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
1455 case elfcpp::R_SPARC_TLS_IE_LO10:
1456 case elfcpp::R_SPARC_TLS_IE_LD:
1457 case elfcpp::R_SPARC_TLS_IE_LDX:
1458 // These are Initial-Exec relocs which get the thread offset
1459 // from the GOT. If we know that we are linking against the
1460 // local symbol, we can switch to Local-Exec, which links the
1461 // thread offset into the instruction.
1462 if (is_final)
1463 return tls::TLSOPT_TO_LE;
1464 return tls::TLSOPT_NONE;
1465
1466 case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec
1467 case elfcpp::R_SPARC_TLS_LE_LOX10:
1468 // When we already have Local-Exec, there is nothing further we
1469 // can do.
1470 return tls::TLSOPT_NONE;
1471
1472 default:
1473 gold_unreachable();
1474 }
1475}
1476
1477// Generate a PLT entry slot for a call to __tls_get_addr
1478template<int size, bool big_endian>
1479void
1480Target_sparc<size, big_endian>::Scan::generate_tls_call(Symbol_table* symtab,
1481 Layout* layout,
1482 Target_sparc<size, big_endian>* target)
1483{
1484 Symbol* gsym = target->tls_get_addr_sym(symtab);
1485
1486 target->make_plt_entry(symtab, layout, gsym);
1487}
1488
1489// Report an unsupported relocation against a local symbol.
1490
1491template<int size, bool big_endian>
1492void
1493Target_sparc<size, big_endian>::Scan::unsupported_reloc_local(
1494 Sized_relobj<size, big_endian>* object,
1495 unsigned int r_type)
1496{
1497 gold_error(_("%s: unsupported reloc %u against local symbol"),
1498 object->name().c_str(), r_type);
1499}
1500
32b769e1
DM		 1501// We are about to emit a dynamic relocation of type R_TYPE. If the
1502// dynamic linker does not support it, issue an error.
1503
1504template<int size, bool big_endian>
1505void
1506Target_sparc<size, big_endian>::Scan::check_non_pic(Relobj* object, unsigned int r_type)
1507{
1508 gold_assert(r_type != elfcpp::R_SPARC_NONE);
1509
1510 if (size == 64)
1511 {
1512 switch (r_type)
1513 {
1514 // These are the relocation types supported by glibc for sparc 64-bit.
1515 case elfcpp::R_SPARC_RELATIVE:
1516 case elfcpp::R_SPARC_COPY:
1517 case elfcpp::R_SPARC_64:
1518 case elfcpp::R_SPARC_GLOB_DAT:
1519 case elfcpp::R_SPARC_JMP_SLOT:
1520 case elfcpp::R_SPARC_TLS_DTPMOD64:
1521 case elfcpp::R_SPARC_TLS_DTPOFF64:
1522 case elfcpp::R_SPARC_TLS_TPOFF64:
1523 case elfcpp::R_SPARC_TLS_LE_HIX22:
1524 case elfcpp::R_SPARC_TLS_LE_LOX10:
1525 case elfcpp::R_SPARC_8:
1526 case elfcpp::R_SPARC_16:
1527 case elfcpp::R_SPARC_DISP8:
1528 case elfcpp::R_SPARC_DISP16:
1529 case elfcpp::R_SPARC_DISP32:
1530 case elfcpp::R_SPARC_WDISP30:
1531 case elfcpp::R_SPARC_LO10:
1532 case elfcpp::R_SPARC_HI22:
1533 case elfcpp::R_SPARC_OLO10:
1534 case elfcpp::R_SPARC_H44:
1535 case elfcpp::R_SPARC_M44:
1536 case elfcpp::R_SPARC_L44:
1537 case elfcpp::R_SPARC_HH22:
1538 case elfcpp::R_SPARC_HM10:
1539 case elfcpp::R_SPARC_LM22:
1540 case elfcpp::R_SPARC_UA16:
1541 case elfcpp::R_SPARC_UA32:
1542 case elfcpp::R_SPARC_UA64:
1543 return;
1544
1545 default:
1546 break;
1547 }
1548 }
1549 else
1550 {
1551 switch (r_type)
1552 {
1553 // These are the relocation types supported by glibc for sparc 32-bit.
1554 case elfcpp::R_SPARC_RELATIVE:
1555 case elfcpp::R_SPARC_COPY:
1556 case elfcpp::R_SPARC_GLOB_DAT:
1557 case elfcpp::R_SPARC_32:
1558 case elfcpp::R_SPARC_JMP_SLOT:
1559 case elfcpp::R_SPARC_TLS_DTPMOD32:
1560 case elfcpp::R_SPARC_TLS_DTPOFF32:
1561 case elfcpp::R_SPARC_TLS_TPOFF32:
1562 case elfcpp::R_SPARC_TLS_LE_HIX22:
1563 case elfcpp::R_SPARC_TLS_LE_LOX10:
1564 case elfcpp::R_SPARC_8:
1565 case elfcpp::R_SPARC_16:
1566 case elfcpp::R_SPARC_DISP8:
1567 case elfcpp::R_SPARC_DISP16:
1568 case elfcpp::R_SPARC_DISP32:
1569 case elfcpp::R_SPARC_LO10:
1570 case elfcpp::R_SPARC_WDISP30:
1571 case elfcpp::R_SPARC_HI22:
1572 case elfcpp::R_SPARC_UA16:
1573 case elfcpp::R_SPARC_UA32:
1574 return;
1575
1576 default:
1577 break;
1578 }
1579 }
1580
1581 // This prevents us from issuing more than one error per reloc
1582 // section. But we can still wind up issuing more than one
1583 // error per object file.
1584 if (this->issued_non_pic_error_)
1585 return;
1586 object->error(_("requires unsupported dynamic reloc; "
1587 "recompile with -fPIC"));
1588 this->issued_non_pic_error_ = true;
1589 return;
1590}
1591
f5314dd5
DM		 1592// Scan a relocation for a local symbol.
1593
1594template<int size, bool big_endian>
1595inline void
1596Target_sparc<size, big_endian>::Scan::local(
1597 const General_options&,
1598 Symbol_table* symtab,
1599 Layout* layout,
1600 Target_sparc<size, big_endian>* target,
1601 Sized_relobj<size, big_endian>* object,
1602 unsigned int data_shndx,
1603 Output_section* output_section,
1604 const elfcpp::Rela<size, big_endian>& reloc,
1605 unsigned int r_type,
1606 const elfcpp::Sym<size, big_endian>& lsym)
1607{
1608 unsigned int orig_r_type = r_type;
1609
1610 r_type &= 0xff;
1611 switch (r_type)
1612 {
1613 case elfcpp::R_SPARC_NONE:
1614 case elfcpp::R_SPARC_REGISTER:
1615 case elfcpp::R_SPARC_GNU_VTINHERIT:
1616 case elfcpp::R_SPARC_GNU_VTENTRY:
1617 break;
1618
1619 case elfcpp::R_SPARC_64:
1620 case elfcpp::R_SPARC_32:
1621 // If building a shared library (or a position-independent
1622 // executable), we need to create a dynamic relocation for
1623 // this location. The relocation applied at link time will
1624 // apply the link-time value, so we flag the location with
1625 // an R_SPARC_RELATIVE relocation so the dynamic loader can
1626 // relocate it easily.
1627 if (parameters->options().output_is_position_independent())
1628 {
1629 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1630 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1631 rela_dyn->add_local_relative(object, r_sym, elfcpp::R_SPARC_RELATIVE,
1632 output_section, data_shndx,
1633 reloc.get_r_offset(),
1634 reloc.get_r_addend());
1635 }
1636 break;
1637
1638 case elfcpp::R_SPARC_HIX22:
1639 case elfcpp::R_SPARC_LOX10:
1640 case elfcpp::R_SPARC_H44:
1641 case elfcpp::R_SPARC_M44:
1642 case elfcpp::R_SPARC_L44:
1643 case elfcpp::R_SPARC_HH22:
1644 case elfcpp::R_SPARC_HM10:
1645 case elfcpp::R_SPARC_LM22:
1646 case elfcpp::R_SPARC_UA64:
1647 case elfcpp::R_SPARC_UA32:
1648 case elfcpp::R_SPARC_UA16:
1649 case elfcpp::R_SPARC_HI22:
1650 case elfcpp::R_SPARC_LO10:
1651 case elfcpp::R_SPARC_OLO10:
1652 case elfcpp::R_SPARC_16:
1653 case elfcpp::R_SPARC_11:
1654 case elfcpp::R_SPARC_10:
1655 case elfcpp::R_SPARC_8:
1656 case elfcpp::R_SPARC_7:
1657 case elfcpp::R_SPARC_6:
1658 case elfcpp::R_SPARC_5:
1659 // If building a shared library (or a position-independent
1660 // executable), we need to create a dynamic relocation for
1661 // this location.
1662 if (parameters->options().output_is_position_independent())
1663 {
1664 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
32b769e1
DM		 1665
1666 check_non_pic(object, r_type);
f5314dd5
DM		 1667 if (lsym.get_st_type() != elfcpp::STT_SECTION)
1668 {
1669 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1670 rela_dyn->add_local(object, r_sym, orig_r_type, output_section,
1671 data_shndx, reloc.get_r_offset(),
1672 reloc.get_r_addend());
1673 }
1674 else
1675 {
1676 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1677 gold_assert(lsym.get_st_value() == 0);
1678 rela_dyn->add_local_relative(object, r_sym, orig_r_type,
1679 output_section, data_shndx,
1680 reloc.get_r_offset(),
1681 reloc.get_r_addend());
1682 }
1683 }
1684 break;
1685
1686 case elfcpp::R_SPARC_WDISP30:
1687 case elfcpp::R_SPARC_WDISP22:
1688 case elfcpp::R_SPARC_WDISP19:
1689 case elfcpp::R_SPARC_WDISP16:
1690 case elfcpp::R_SPARC_DISP8:
1691 case elfcpp::R_SPARC_DISP16:
1692 case elfcpp::R_SPARC_DISP32:
1693 case elfcpp::R_SPARC_DISP64:
1694 case elfcpp::R_SPARC_PC10:
1695 case elfcpp::R_SPARC_PC22:
1696 break;
1697
1698 case elfcpp::R_SPARC_GOT10:
1699 case elfcpp::R_SPARC_GOT13:
1700 case elfcpp::R_SPARC_GOT22:
1701 {
1702 // The symbol requires a GOT entry.
1703 Output_data_got<size, big_endian>* got;
1704 unsigned int r_sym;
1705
1706 got = target->got_section(symtab, layout);
1707 r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1708
1709 // If we are generating a shared object, we need to add a
1710 // dynamic relocation for this symbol's GOT entry.
1711 if (parameters->options().output_is_position_independent())
1712 {
1713 if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD))
1714 {
1715 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1716 unsigned int off;
1717
1718 off = got->add_constant(0);
1719 object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off);
1720 rela_dyn->add_local_relative(object, r_sym,
1721 elfcpp::R_SPARC_RELATIVE,
1722 got, off, 0);
1723 }
1724 }
1725 else
1726 got->add_local(object, r_sym, GOT_TYPE_STANDARD);
1727 }
1728 break;
1729
1730 // These are initial TLS relocs, which are expected when
1731 // linking.
1732 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1733 case elfcpp::R_SPARC_TLS_GD_LO10:
1734 case elfcpp::R_SPARC_TLS_GD_ADD:
1735 case elfcpp::R_SPARC_TLS_GD_CALL:
1736 case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic
1737 case elfcpp::R_SPARC_TLS_LDM_LO10:
1738 case elfcpp::R_SPARC_TLS_LDM_ADD:
1739 case elfcpp::R_SPARC_TLS_LDM_CALL:
1740 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
1741 case elfcpp::R_SPARC_TLS_LDO_LOX10:
1742 case elfcpp::R_SPARC_TLS_LDO_ADD:
1743 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
1744 case elfcpp::R_SPARC_TLS_IE_LO10:
1745 case elfcpp::R_SPARC_TLS_IE_LD:
1746 case elfcpp::R_SPARC_TLS_IE_LDX:
1747 case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec
1748 case elfcpp::R_SPARC_TLS_LE_LOX10:
1749 {
1750 bool output_is_shared = parameters->options().shared();
1751 const tls::Tls_optimization optimized_type
1752 = optimize_tls_reloc(!output_is_shared, r_type);
1753 switch (r_type)
1754 {
1755 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1756 case elfcpp::R_SPARC_TLS_GD_LO10:
1757 case elfcpp::R_SPARC_TLS_GD_ADD:
1758 case elfcpp::R_SPARC_TLS_GD_CALL:
1759 if (optimized_type == tls::TLSOPT_NONE)
1760 {
1761 // Create a pair of GOT entries for the module index and
1762 // dtv-relative offset.
1763 Output_data_got<size, big_endian>* got
1764 = target->got_section(symtab, layout);
1765 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
d491d34e
ILT		 1766 unsigned int shndx = lsym.get_st_shndx();
1767 bool is_ordinary;
1768 shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary);
1769 if (!is_ordinary)
1770 object->error(_("local symbol %u has bad shndx %u"),
1771 r_sym, shndx);
1772 else
1773 got->add_local_pair_with_rela(object, r_sym,
1774 lsym.get_st_shndx(),
1775 GOT_TYPE_TLS_PAIR,
1776 target->rela_dyn_section(layout),
1777 (size == 64
1778 ? elfcpp::R_SPARC_TLS_DTPMOD64
1779 : elfcpp::R_SPARC_TLS_DTPMOD32),
1780 0);
f5314dd5
DM		 1781 if (r_type == elfcpp::R_SPARC_TLS_GD_CALL)
1782 generate_tls_call(symtab, layout, target);
1783 }
1784 else if (optimized_type != tls::TLSOPT_TO_LE)
1785 unsupported_reloc_local(object, r_type);
1786 break;
1787
1788 case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic
1789 case elfcpp::R_SPARC_TLS_LDM_LO10:
1790 case elfcpp::R_SPARC_TLS_LDM_ADD:
1791 case elfcpp::R_SPARC_TLS_LDM_CALL:
1792 if (optimized_type == tls::TLSOPT_NONE)
1793 {
1794 // Create a GOT entry for the module index.
1795 target->got_mod_index_entry(symtab, layout, object);
1796
1797 if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL)
1798 generate_tls_call(symtab, layout, target);
1799 }
1800 else if (optimized_type != tls::TLSOPT_TO_LE)
1801 unsupported_reloc_local(object, r_type);
1802 break;
1803
1804 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
1805 case elfcpp::R_SPARC_TLS_LDO_LOX10:
1806 case elfcpp::R_SPARC_TLS_LDO_ADD:
1807 break;
1808
1809 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
1810 case elfcpp::R_SPARC_TLS_IE_LO10:
1811 case elfcpp::R_SPARC_TLS_IE_LD:
1812 case elfcpp::R_SPARC_TLS_IE_LDX:
1813 layout->set_has_static_tls();
1814 if (optimized_type == tls::TLSOPT_NONE)
1815 {
1816 // Create a GOT entry for the tp-relative offset.
1817 Output_data_got<size, big_endian>* got
1818 = target->got_section(symtab, layout);
1819 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1820
1821 if (!object->local_has_got_offset(r_sym, GOT_TYPE_TLS_OFFSET))
1822 {
1823 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1824 unsigned int off = got->add_constant(0);
1825
1826 object->set_local_got_offset(r_sym, GOT_TYPE_TLS_OFFSET,
1827 off);
1828 rela_dyn->add_local_relative(object, r_sym,
1829 (size == 64 ?
1830 elfcpp::R_SPARC_TLS_TPOFF64 :
1831 elfcpp::R_SPARC_TLS_TPOFF32),
1832 got, off, 0);
1833 }
1834 }
1835 else if (optimized_type != tls::TLSOPT_TO_LE)
1836 unsupported_reloc_local(object, r_type);
1837 break;
1838
1839 case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec
1840 case elfcpp::R_SPARC_TLS_LE_LOX10:
1841 layout->set_has_static_tls();
1842 if (output_is_shared)
1843 {
1844 // We need to create a dynamic relocation.
1845 gold_assert(lsym.get_st_type() != elfcpp::STT_SECTION);
1846 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1847 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1848 rela_dyn->add_local_relative(object, r_sym, r_type,
1849 output_section, data_shndx,
1850 reloc.get_r_offset(), 0);
1851 }
1852 break;
1853 }
1854 }
1855 break;
1856
1857 // These are relocations which should only be seen by the
1858 // dynamic linker, and should never be seen here.
1859 case elfcpp::R_SPARC_COPY:
1860 case elfcpp::R_SPARC_GLOB_DAT:
1861 case elfcpp::R_SPARC_JMP_SLOT:
1862 case elfcpp::R_SPARC_RELATIVE:
1863 case elfcpp::R_SPARC_TLS_DTPMOD64:
1864 case elfcpp::R_SPARC_TLS_DTPMOD32:
1865 case elfcpp::R_SPARC_TLS_DTPOFF64:
1866 case elfcpp::R_SPARC_TLS_DTPOFF32:
1867 case elfcpp::R_SPARC_TLS_TPOFF64:
1868 case elfcpp::R_SPARC_TLS_TPOFF32:
1869 gold_error(_("%s: unexpected reloc %u in object file"),
1870 object->name().c_str(), r_type);
1871 break;
1872
1873 default:
1874 unsupported_reloc_local(object, r_type);
1875 break;
1876 }
1877}
1878
1879// Report an unsupported relocation against a global symbol.
1880
1881template<int size, bool big_endian>
1882void
1883Target_sparc<size, big_endian>::Scan::unsupported_reloc_global(
1884 Sized_relobj<size, big_endian>* object,
1885 unsigned int r_type,
1886 Symbol* gsym)
1887{
1888 gold_error(_("%s: unsupported reloc %u against global symbol %s"),
1889 object->name().c_str(), r_type, gsym->demangled_name().c_str());
1890}
1891
1892// Scan a relocation for a global symbol.
1893
1894template<int size, bool big_endian>
1895inline void
1896Target_sparc<size, big_endian>::Scan::global(
12c0daef 1897 const General_options&,
f5314dd5
DM		 1898 Symbol_table* symtab,
1899 Layout* layout,
1900 Target_sparc<size, big_endian>* target,
1901 Sized_relobj<size, big_endian>* object,
1902 unsigned int data_shndx,
1903 Output_section* output_section,
1904 const elfcpp::Rela<size, big_endian>& reloc,
1905 unsigned int r_type,
1906 Symbol* gsym)
1907{
1908 unsigned int orig_r_type = r_type;
1909
1910 r_type &= 0xff;
1911 switch (r_type)
1912 {
1913 case elfcpp::R_SPARC_NONE:
1914 case elfcpp::R_SPARC_REGISTER:
1915 case elfcpp::R_SPARC_GNU_VTINHERIT:
1916 case elfcpp::R_SPARC_GNU_VTENTRY:
1917 break;
1918
1919 case elfcpp::R_SPARC_PLT64:
1920 case elfcpp::R_SPARC_PLT32:
1921 case elfcpp::R_SPARC_HIPLT22:
1922 case elfcpp::R_SPARC_LOPLT10:
1923 case elfcpp::R_SPARC_PCPLT32:
1924 case elfcpp::R_SPARC_PCPLT22:
1925 case elfcpp::R_SPARC_PCPLT10:
1926 case elfcpp::R_SPARC_WPLT30:
1927 // If the symbol is fully resolved, this is just a PC32 reloc.
1928 // Otherwise we need a PLT entry.
1929 if (gsym->final_value_is_known())
1930 break;
1931 // If building a shared library, we can also skip the PLT entry
1932 // if the symbol is defined in the output file and is protected
1933 // or hidden.
1934 if (gsym->is_defined()
1935 && !gsym->is_from_dynobj()
1936 && !gsym->is_preemptible())
1937 break;
1938 target->make_plt_entry(symtab, layout, gsym);
1939 break;
1940
1941 case elfcpp::R_SPARC_DISP8:
1942 case elfcpp::R_SPARC_DISP16:
1943 case elfcpp::R_SPARC_DISP32:
1944 case elfcpp::R_SPARC_DISP64:
1945 case elfcpp::R_SPARC_PC_HH22:
1946 case elfcpp::R_SPARC_PC_HM10:
1947 case elfcpp::R_SPARC_PC_LM22:
1948 case elfcpp::R_SPARC_PC10:
1949 case elfcpp::R_SPARC_PC22:
1950 case elfcpp::R_SPARC_WDISP30:
1951 case elfcpp::R_SPARC_WDISP22:
1952 case elfcpp::R_SPARC_WDISP19:
1953 case elfcpp::R_SPARC_WDISP16:
1954 {
1955 if (gsym->needs_plt_entry())
1956 target->make_plt_entry(symtab, layout, gsym);
1957 // Make a dynamic relocation if necessary.
1958 int flags = Symbol::NON_PIC_REF;
1959 if (gsym->type() == elfcpp::STT_FUNC)
1960 flags |= Symbol::FUNCTION_CALL;
1961 if (gsym->needs_dynamic_reloc(flags))
1962 {
1963 if (target->may_need_copy_reloc(gsym))
1964 {
12c0daef 1965 target->copy_reloc(symtab, layout, object,
f5314dd5
DM		 1966 data_shndx, output_section, gsym,
1967 reloc);
1968 }
1969 else
1970 {
1971 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
32b769e1 1972 check_non_pic(object, r_type);
f5314dd5
DM		 1973 rela_dyn->add_global(gsym, orig_r_type, output_section, object,
1974 data_shndx, reloc.get_r_offset(),
1975 reloc.get_r_addend());
1976 }
1977 }
1978 }
1979 break;
1980
1981 case elfcpp::R_SPARC_UA64:
1982 case elfcpp::R_SPARC_64:
1983 case elfcpp::R_SPARC_HIX22:
1984 case elfcpp::R_SPARC_LOX10:
1985 case elfcpp::R_SPARC_H44:
1986 case elfcpp::R_SPARC_M44:
1987 case elfcpp::R_SPARC_L44:
1988 case elfcpp::R_SPARC_HH22:
1989 case elfcpp::R_SPARC_HM10:
1990 case elfcpp::R_SPARC_LM22:
1991 case elfcpp::R_SPARC_HI22:
1992 case elfcpp::R_SPARC_LO10:
1993 case elfcpp::R_SPARC_OLO10:
1994 case elfcpp::R_SPARC_UA32:
1995 case elfcpp::R_SPARC_32:
1996 case elfcpp::R_SPARC_UA16:
1997 case elfcpp::R_SPARC_16:
1998 case elfcpp::R_SPARC_11:
1999 case elfcpp::R_SPARC_10:
2000 case elfcpp::R_SPARC_8:
2001 case elfcpp::R_SPARC_7:
2002 case elfcpp::R_SPARC_6:
2003 case elfcpp::R_SPARC_5:
2004 {
2005 // Make a PLT entry if necessary.
2006 if (gsym->needs_plt_entry())
2007 {
2008 target->make_plt_entry(symtab, layout, gsym);
2009 // Since this is not a PC-relative relocation, we may be
2010 // taking the address of a function. In that case we need to
2011 // set the entry in the dynamic symbol table to the address of
2012 // the PLT entry.
2013 if (gsym->is_from_dynobj() && !parameters->options().shared())
2014 gsym->set_needs_dynsym_value();
2015 }
2016 // Make a dynamic relocation if necessary.
2017 if (gsym->needs_dynamic_reloc(Symbol::ABSOLUTE_REF))
2018 {
2019 if (target->may_need_copy_reloc(gsym))
2020 {
12c0daef 2021 target->copy_reloc(symtab, layout, object,
f5314dd5
DM		 2022 data_shndx, output_section, gsym, reloc);
2023 }
2024 else if ((r_type == elfcpp::R_SPARC_32
2025 || r_type == elfcpp::R_SPARC_64)
2026 && gsym->can_use_relative_reloc(false))
2027 {
2028 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2029 rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE,
2030 output_section, object,
2031 data_shndx, reloc.get_r_offset(),
2032 reloc.get_r_addend());
2033 }
2034 else
2035 {
2036 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2037
32b769e1 2038 check_non_pic(object, r_type);
f5314dd5
DM		 2039 if (gsym->is_from_dynobj()
2040 || gsym->is_undefined()
2041 || gsym->is_preemptible())
2042 rela_dyn->add_global(gsym, orig_r_type, output_section,
2043 object, data_shndx,
2044 reloc.get_r_offset(),
2045 reloc.get_r_addend());
2046 else
2047 rela_dyn->add_global_relative(gsym, orig_r_type,
2048 output_section, object,
2049 data_shndx,
2050 reloc.get_r_offset(),
2051 reloc.get_r_addend());
2052 }
2053 }
2054 }
2055 break;
2056
2057 case elfcpp::R_SPARC_GOT10:
2058 case elfcpp::R_SPARC_GOT13:
2059 case elfcpp::R_SPARC_GOT22:
2060 {
2061 // The symbol requires a GOT entry.
2062 Output_data_got<size, big_endian>* got;
2063
2064 got = target->got_section(symtab, layout);
2065 if (gsym->final_value_is_known())
2066 got->add_global(gsym, GOT_TYPE_STANDARD);
2067 else
2068 {
2069 // If this symbol is not fully resolved, we need to add a
2070 // dynamic relocation for it.
2071 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2072 if (gsym->is_from_dynobj()
2073 || gsym->is_undefined()
2074 || gsym->is_preemptible())
2075 got->add_global_with_rela(gsym, GOT_TYPE_STANDARD, rela_dyn,
2076 elfcpp::R_SPARC_GLOB_DAT);
2077 else if (!gsym->has_got_offset(GOT_TYPE_STANDARD))
2078 {
2079 unsigned int off = got->add_constant(0);
2080
2081 gsym->set_got_offset(GOT_TYPE_STANDARD, off);
2082 rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE,
2083 got, off, 0);
2084 }
2085 }
2086 }
2087 break;
2088
2089 // These are initial tls relocs, which are expected when
2090 // linking.
2091 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2092 case elfcpp::R_SPARC_TLS_GD_LO10:
2093 case elfcpp::R_SPARC_TLS_GD_ADD:
2094 case elfcpp::R_SPARC_TLS_GD_CALL:
2095 case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic
2096 case elfcpp::R_SPARC_TLS_LDM_LO10:
2097 case elfcpp::R_SPARC_TLS_LDM_ADD:
2098 case elfcpp::R_SPARC_TLS_LDM_CALL:
2099 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
2100 case elfcpp::R_SPARC_TLS_LDO_LOX10:
2101 case elfcpp::R_SPARC_TLS_LDO_ADD:
2102 case elfcpp::R_SPARC_TLS_LE_HIX22:
2103 case elfcpp::R_SPARC_TLS_LE_LOX10:
2104 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
2105 case elfcpp::R_SPARC_TLS_IE_LO10:
2106 case elfcpp::R_SPARC_TLS_IE_LD:
2107 case elfcpp::R_SPARC_TLS_IE_LDX:
2108 {
2109 const bool is_final = gsym->final_value_is_known();
2110 const tls::Tls_optimization optimized_type
2111 = optimize_tls_reloc(is_final, r_type);
2112 switch (r_type)
2113 {
2114 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2115 case elfcpp::R_SPARC_TLS_GD_LO10:
2116 case elfcpp::R_SPARC_TLS_GD_ADD:
2117 case elfcpp::R_SPARC_TLS_GD_CALL:
2118 if (optimized_type == tls::TLSOPT_NONE)
2119 {
2120 // Create a pair of GOT entries for the module index and
2121 // dtv-relative offset.
2122 Output_data_got<size, big_endian>* got
2123 = target->got_section(symtab, layout);
2124 got->add_global_pair_with_rela(gsym, GOT_TYPE_TLS_PAIR,
2125 target->rela_dyn_section(layout),
2126 (size == 64 ?
2127 elfcpp::R_SPARC_TLS_DTPMOD64 :
2128 elfcpp::R_SPARC_TLS_DTPMOD32),
2129 (size == 64 ?
2130 elfcpp::R_SPARC_TLS_DTPOFF64 :
2131 elfcpp::R_SPARC_TLS_DTPOFF32));
2132
2133 // Emit R_SPARC_WPLT30 against "__tls_get_addr"
2134 if (r_type == elfcpp::R_SPARC_TLS_GD_CALL)
2135 generate_tls_call(symtab, layout, target);
2136 }
2137 else if (optimized_type == tls::TLSOPT_TO_IE)
2138 {
2139 // Create a GOT entry for the tp-relative offset.
2140 Output_data_got<size, big_endian>* got
2141 = target->got_section(symtab, layout);
2142 got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET,
2143 target->rela_dyn_section(layout),
2144 (size == 64 ?
2145 elfcpp::R_SPARC_TLS_TPOFF64 :
2146 elfcpp::R_SPARC_TLS_TPOFF32));
2147 }
2148 else if (optimized_type != tls::TLSOPT_TO_LE)
2149 unsupported_reloc_global(object, r_type, gsym);
2150 break;
2151
2152 case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic
2153 case elfcpp::R_SPARC_TLS_LDM_LO10:
2154 case elfcpp::R_SPARC_TLS_LDM_ADD:
2155 case elfcpp::R_SPARC_TLS_LDM_CALL:
2156 if (optimized_type == tls::TLSOPT_NONE)
2157 {
2158 // Create a GOT entry for the module index.
2159 target->got_mod_index_entry(symtab, layout, object);
2160
2161 if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL)
2162 generate_tls_call(symtab, layout, target);
2163 }
2164 else if (optimized_type != tls::TLSOPT_TO_LE)
2165 unsupported_reloc_global(object, r_type, gsym);
2166 break;
2167
2168 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
2169 case elfcpp::R_SPARC_TLS_LDO_LOX10:
2170 case elfcpp::R_SPARC_TLS_LDO_ADD:
2171 break;
2172
2173 case elfcpp::R_SPARC_TLS_LE_HIX22:
2174 case elfcpp::R_SPARC_TLS_LE_LOX10:
2175 layout->set_has_static_tls();
2176 if (parameters->options().shared())
2177 {
2178 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2179 rela_dyn->add_global_relative(gsym, orig_r_type,
2180 output_section, object,
2181 data_shndx, reloc.get_r_offset(),
2182 0);
2183 }
2184 break;
2185
2186 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
2187 case elfcpp::R_SPARC_TLS_IE_LO10:
2188 case elfcpp::R_SPARC_TLS_IE_LD:
2189 case elfcpp::R_SPARC_TLS_IE_LDX:
2190 layout->set_has_static_tls();
2191 if (optimized_type == tls::TLSOPT_NONE)
2192 {
2193 // Create a GOT entry for the tp-relative offset.
2194 Output_data_got<size, big_endian>* got
2195 = target->got_section(symtab, layout);
2196 got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET,
2197 target->rela_dyn_section(layout),
2198 (size == 64 ?
2199 elfcpp::R_SPARC_TLS_TPOFF64 :
2200 elfcpp::R_SPARC_TLS_TPOFF32));
2201 }
2202 else if (optimized_type != tls::TLSOPT_TO_LE)
2203 unsupported_reloc_global(object, r_type, gsym);
2204 break;
2205 }
2206 }
2207 break;
2208
2209 // These are relocations which should only be seen by the
2210 // dynamic linker, and should never be seen here.
2211 case elfcpp::R_SPARC_COPY:
2212 case elfcpp::R_SPARC_GLOB_DAT:
2213 case elfcpp::R_SPARC_JMP_SLOT:
2214 case elfcpp::R_SPARC_RELATIVE:
2215 case elfcpp::R_SPARC_TLS_DTPMOD64:
2216 case elfcpp::R_SPARC_TLS_DTPMOD32:
2217 case elfcpp::R_SPARC_TLS_DTPOFF64:
2218 case elfcpp::R_SPARC_TLS_DTPOFF32:
2219 case elfcpp::R_SPARC_TLS_TPOFF64:
2220 case elfcpp::R_SPARC_TLS_TPOFF32:
2221 gold_error(_("%s: unexpected reloc %u in object file"),
2222 object->name().c_str(), r_type);
2223 break;
2224
2225 default:
2226 unsupported_reloc_global(object, r_type, gsym);
2227 break;
2228 }
2229}
2230
6d03d481
ST		 2231// Process relocations for gc.
2232
2233template<int size, bool big_endian>
2234void
2235Target_sparc<size, big_endian>::gc_process_relocs(
2236 const General_options& options,
2237 Symbol_table* symtab,
2238 Layout* layout,
2239 Sized_relobj<size, big_endian>* object,
2240 unsigned int data_shndx,
2241 unsigned int,
2242 const unsigned char* prelocs,
2243 size_t reloc_count,
2244 Output_section* output_section,
2245 bool needs_special_offset_handling,
2246 size_t local_symbol_count,
2247 const unsigned char* plocal_symbols)
2248{
2249 typedef Target_sparc<size, big_endian> Sparc;
2250 typedef typename Target_sparc<size, big_endian>::Scan Scan;
2251
2252 gold::gc_process_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>(
2253 options,
2254 symtab,
2255 layout,
2256 this,
2257 object,
2258 data_shndx,
2259 prelocs,
2260 reloc_count,
2261 output_section,
2262 needs_special_offset_handling,
2263 local_symbol_count,
2264 plocal_symbols);
2265}
2266
f5314dd5
DM		 2267// Scan relocations for a section.
2268
2269template<int size, bool big_endian>
2270void
2271Target_sparc<size, big_endian>::scan_relocs(
2272 const General_options& options,
2273 Symbol_table* symtab,
2274 Layout* layout,
2275 Sized_relobj<size, big_endian>* object,
2276 unsigned int data_shndx,
2277 unsigned int sh_type,
2278 const unsigned char* prelocs,
2279 size_t reloc_count,
2280 Output_section* output_section,
2281 bool needs_special_offset_handling,
2282 size_t local_symbol_count,
2283 const unsigned char* plocal_symbols)
2284{
2285 typedef Target_sparc<size, big_endian> Sparc;
2286 typedef typename Target_sparc<size, big_endian>::Scan Scan;
2287
2288 if (sh_type == elfcpp::SHT_REL)
2289 {
2290 gold_error(_("%s: unsupported REL reloc section"),
2291 object->name().c_str());
2292 return;
2293 }
2294
2295 gold::scan_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>(
2296 options,
2297 symtab,
2298 layout,
2299 this,
2300 object,
2301 data_shndx,
2302 prelocs,
2303 reloc_count,
2304 output_section,
2305 needs_special_offset_handling,
2306 local_symbol_count,
2307 plocal_symbols);
2308}
2309
2310// Finalize the sections.
2311
2312template<int size, bool big_endian>
2313void
2314Target_sparc<size, big_endian>::do_finalize_sections(Layout* layout)
2315{
2316 // Fill in some more dynamic tags.
2317 Output_data_dynamic* const odyn = layout->dynamic_data();
2318 if (odyn != NULL)
2319 {
2320 if (this->plt_ != NULL)
2321 {
2322 const Output_data* od = this->plt_->rel_plt();
2323 odyn->add_section_size(elfcpp::DT_PLTRELSZ, od);
2324 odyn->add_section_address(elfcpp::DT_JMPREL, od);
2325 odyn->add_constant(elfcpp::DT_PLTREL, elfcpp::DT_RELA);
2326
2327 odyn->add_section_address(elfcpp::DT_PLTGOT, this->plt_);
2328 }
2329
2330 if (this->rela_dyn_ != NULL)
2331 {
2332 const Output_data* od = this->rela_dyn_;
2333 odyn->add_section_address(elfcpp::DT_RELA, od);
2334 odyn->add_section_size(elfcpp::DT_RELASZ, od);
2335 odyn->add_constant(elfcpp::DT_RELAENT,
2336 elfcpp::Elf_sizes<size>::rela_size);
2337 }
2338
2339 if (!parameters->options().shared())
2340 {
2341 // The value of the DT_DEBUG tag is filled in by the dynamic
2342 // linker at run time, and used by the debugger.
2343 odyn->add_constant(elfcpp::DT_DEBUG, 0);
2344 }
2345 }
2346
2347 // Emit any relocs we saved in an attempt to avoid generating COPY
2348 // relocs.
12c0daef
ILT		 2349 if (this->copy_relocs_.any_saved_relocs())
2350 this->copy_relocs_.emit(this->rela_dyn_section(layout));
f5314dd5
DM		 2351}
2352
2353// Perform a relocation.
2354
2355template<int size, bool big_endian>
2356inline bool
2357Target_sparc<size, big_endian>::Relocate::relocate(
2358 const Relocate_info<size, big_endian>* relinfo,
2359 Target_sparc* target,
031cdbed 2360 Output_section*,
f5314dd5
DM		 2361 size_t relnum,
2362 const elfcpp::Rela<size, big_endian>& rela,
2363 unsigned int r_type,
2364 const Sized_symbol<size>* gsym,
2365 const Symbol_value<size>* psymval,
2366 unsigned char* view,
2367 typename elfcpp::Elf_types<size>::Elf_Addr address,
2368 section_size_type view_size)
2369{
2370 r_type &= 0xff;
2371
2372 if (this->ignore_gd_add_)
2373 {
2374 if (r_type != elfcpp::R_SPARC_TLS_GD_ADD)
2375 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2376 _("missing expected TLS relocation"));
2377 else
2378 {
2379 this->ignore_gd_add_ = false;
2380 return false;
2381 }
2382 }
2383
2384 typedef Sparc_relocate_functions<size, big_endian> Reloc;
2385
2386 // Pick the value to use for symbols defined in shared objects.
2387 Symbol_value<size> symval;
2388 if (gsym != NULL
de4c45bd
ILT		 2389 && gsym->use_plt_offset(r_type == elfcpp::R_SPARC_DISP8
2390 || r_type == elfcpp::R_SPARC_DISP16
2391 || r_type == elfcpp::R_SPARC_DISP32
2392 || r_type == elfcpp::R_SPARC_DISP64
2393 || r_type == elfcpp::R_SPARC_PC_HH22
2394 || r_type == elfcpp::R_SPARC_PC_HM10
2395 || r_type == elfcpp::R_SPARC_PC_LM22
2396 || r_type == elfcpp::R_SPARC_PC10
2397 || r_type == elfcpp::R_SPARC_PC22
2398 || r_type == elfcpp::R_SPARC_WDISP30
2399 || r_type == elfcpp::R_SPARC_WDISP22
2400 || r_type == elfcpp::R_SPARC_WDISP19
2401 || r_type == elfcpp::R_SPARC_WDISP16))
f5314dd5
DM		 2402 {
2403 elfcpp::Elf_Xword value;
2404
2405 value = target->plt_section()->address() + gsym->plt_offset();
2406
2407 symval.set_output_value(value);
2408
2409 psymval = &symval;
2410 }
2411
2412 const Sized_relobj<size, big_endian>* object = relinfo->object;
2413 const elfcpp::Elf_Xword addend = rela.get_r_addend();
2414
2415 // Get the GOT offset if needed. Unlike i386 and x86_64, our GOT
2416 // pointer points to the beginning, not the end, of the table.
2417 // So we just use the plain offset.
2418 bool have_got_offset = false;
2419 unsigned int got_offset = 0;
2420 switch (r_type)
2421 {
2422 case elfcpp::R_SPARC_GOT10:
2423 case elfcpp::R_SPARC_GOT13:
2424 case elfcpp::R_SPARC_GOT22:
2425 if (gsym != NULL)
2426 {
2427 gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD));
2428 got_offset = gsym->got_offset(GOT_TYPE_STANDARD);
2429 }
2430 else
2431 {
2432 unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
2433 gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD));
2434 got_offset = object->local_got_offset(r_sym, GOT_TYPE_STANDARD);
2435 }
2436 have_got_offset = true;
2437 break;
2438
2439 default:
2440 break;
2441 }
2442
2443 switch (r_type)
2444 {
2445 case elfcpp::R_SPARC_NONE:
2446 case elfcpp::R_SPARC_REGISTER:
2447 case elfcpp::R_SPARC_GNU_VTINHERIT:
2448 case elfcpp::R_SPARC_GNU_VTENTRY:
2449 break;
2450
2451 case elfcpp::R_SPARC_8:
2452 Relocate_functions<size, big_endian>::rela8(view, object,
2453 psymval, addend);
2454 break;
2455
2456 case elfcpp::R_SPARC_16:
2457 Relocate_functions<size, big_endian>::rela16(view, object,
2458 psymval, addend);
2459 break;
2460
2461 case elfcpp::R_SPARC_32:
2462 if (!parameters->options().output_is_position_independent())
2463 Relocate_functions<size, big_endian>::rela32(view, object,
2464 psymval, addend);
2465 break;
2466
2467 case elfcpp::R_SPARC_DISP8:
2468 Reloc::disp8(view, object, psymval, addend, address);
2469 break;
2470
2471 case elfcpp::R_SPARC_DISP16:
2472 Reloc::disp16(view, object, psymval, addend, address);
2473 break;
2474
2475 case elfcpp::R_SPARC_DISP32:
2476 Reloc::disp32(view, object, psymval, addend, address);
2477 break;
2478
2479 case elfcpp::R_SPARC_DISP64:
2480 Reloc::disp64(view, object, psymval, addend, address);
2481 break;
2482
2483 case elfcpp::R_SPARC_WDISP30:
2484 case elfcpp::R_SPARC_WPLT30:
2485 Reloc::wdisp30(view, object, psymval, addend, address);
2486 break;
2487
2488 case elfcpp::R_SPARC_WDISP22:
2489 Reloc::wdisp22(view, object, psymval, addend, address);
2490 break;
2491
2492 case elfcpp::R_SPARC_WDISP19:
2493 Reloc::wdisp19(view, object, psymval, addend, address);
2494 break;
2495
2496 case elfcpp::R_SPARC_WDISP16:
2497 Reloc::wdisp16(view, object, psymval, addend, address);
2498 break;
2499
2500 case elfcpp::R_SPARC_HI22:
2501 Reloc::hi22(view, object, psymval, addend);
2502 break;
2503
2504 case elfcpp::R_SPARC_22:
2505 Reloc::rela32_22(view, object, psymval, addend);
2506 break;
2507
2508 case elfcpp::R_SPARC_13:
2509 Reloc::rela32_13(view, object, psymval, addend);
2510 break;
2511
2512 case elfcpp::R_SPARC_LO10:
2513 Reloc::lo10(view, object, psymval, addend);
2514 break;
2515
2516 case elfcpp::R_SPARC_GOT10:
2517 Reloc::lo10(view, got_offset, addend);
2518 break;
2519
2520 case elfcpp::R_SPARC_GOT13:
2521 Reloc::rela32_13(view, got_offset, addend);
2522 break;
2523
2524 case elfcpp::R_SPARC_GOT22:
2525 Reloc::hi22(view, got_offset, addend);
2526 break;
2527
2528 case elfcpp::R_SPARC_PC10:
2529 Reloc::pc10(view, object, psymval, addend, address);
2530 break;
2531
2532 case elfcpp::R_SPARC_PC22:
2533 Reloc::pc22(view, object, psymval, addend, address);
2534 break;
2535
2536 case elfcpp::R_SPARC_TLS_DTPOFF32:
2537 case elfcpp::R_SPARC_UA32:
2538 Reloc::ua32(view, object, psymval, addend);
2539 break;
2540
2541 case elfcpp::R_SPARC_PLT64:
2542 Relocate_functions<size, big_endian>::rela64(view, object,
2543 psymval, addend);
2544 break;
2545
2546 case elfcpp::R_SPARC_PLT32:
2547 Relocate_functions<size, big_endian>::rela32(view, object,
2548 psymval, addend);
2549 break;
2550
2551 case elfcpp::R_SPARC_HIPLT22:
2552 Reloc::hi22(view, object, psymval, addend);
2553 break;
2554
2555 case elfcpp::R_SPARC_LOPLT10:
2556 Reloc::lo10(view, object, psymval, addend);
2557 break;
2558
2559 case elfcpp::R_SPARC_PCPLT32:
2560 Reloc::disp32(view, object, psymval, addend, address);
2561 break;
2562
2563 case elfcpp::R_SPARC_PCPLT22:
2564 Reloc::pcplt22(view, object, psymval, addend, address);
2565 break;
2566
2567 case elfcpp::R_SPARC_PCPLT10:
2568 Reloc::lo10(view, object, psymval, addend, address);
2569 break;
2570
2571 case elfcpp::R_SPARC_64:
2572 if (!parameters->options().output_is_position_independent())
2573 Relocate_functions<size, big_endian>::rela64(view, object,
2574 psymval, addend);
2575 break;
2576
2577 case elfcpp::R_SPARC_OLO10:
2578 {
2579 unsigned int addend2 = rela.get_r_info() & 0xffffffff;
2580 addend2 = ((addend2 >> 8) ^ 0x800000) - 0x800000;
2581 Reloc::olo10(view, object, psymval, addend, addend2);
2582 }
2583 break;
2584
2585 case elfcpp::R_SPARC_HH22:
2586 Reloc::hh22(view, object, psymval, addend);
2587 break;
2588
2589 case elfcpp::R_SPARC_PC_HH22:
2590 Reloc::pc_hh22(view, object, psymval, addend, address);
2591 break;
2592
2593 case elfcpp::R_SPARC_HM10:
2594 Reloc::hm10(view, object, psymval, addend);
2595 break;
2596
2597 case elfcpp::R_SPARC_PC_HM10:
2598 Reloc::pc_hm10(view, object, psymval, addend, address);
2599 break;
2600
2601 case elfcpp::R_SPARC_LM22:
2602 Reloc::hi22(view, object, psymval, addend);
2603 break;
2604
2605 case elfcpp::R_SPARC_PC_LM22:
2606 Reloc::pcplt22(view, object, psymval, addend, address);
2607 break;
2608
2609 case elfcpp::R_SPARC_11:
2610 Reloc::rela32_11(view, object, psymval, addend);
2611 break;
2612
2613 case elfcpp::R_SPARC_10:
2614 Reloc::rela32_10(view, object, psymval, addend);
2615 break;
2616
2617 case elfcpp::R_SPARC_7:
2618 Reloc::rela32_7(view, object, psymval, addend);
2619 break;
2620
2621 case elfcpp::R_SPARC_6:
2622 Reloc::rela32_6(view, object, psymval, addend);
2623 break;
2624
2625 case elfcpp::R_SPARC_5:
2626 Reloc::rela32_5(view, object, psymval, addend);
2627 break;
2628
2629 case elfcpp::R_SPARC_HIX22:
2630 Reloc::hix22(view, object, psymval, addend);
2631 break;
2632
2633 case elfcpp::R_SPARC_LOX10:
2634 Reloc::lox10(view, object, psymval, addend);
2635 break;
2636
2637 case elfcpp::R_SPARC_H44:
2638 Reloc::h44(view, object, psymval, addend);
2639 break;
2640
2641 case elfcpp::R_SPARC_M44:
2642 Reloc::m44(view, object, psymval, addend);
2643 break;
2644
2645 case elfcpp::R_SPARC_L44:
2646 Reloc::l44(view, object, psymval, addend);
2647 break;
2648
2649 case elfcpp::R_SPARC_TLS_DTPOFF64:
2650 case elfcpp::R_SPARC_UA64:
2651 Reloc::ua64(view, object, psymval, addend);
2652 break;
2653
2654 case elfcpp::R_SPARC_UA16:
2655 Reloc::ua16(view, object, psymval, addend);
2656 break;
2657
2658 case elfcpp::R_SPARC_TLS_GD_HI22:
2659 case elfcpp::R_SPARC_TLS_GD_LO10:
2660 case elfcpp::R_SPARC_TLS_GD_ADD:
2661 case elfcpp::R_SPARC_TLS_GD_CALL:
2662 case elfcpp::R_SPARC_TLS_LDM_HI22:
2663 case elfcpp::R_SPARC_TLS_LDM_LO10:
2664 case elfcpp::R_SPARC_TLS_LDM_ADD:
2665 case elfcpp::R_SPARC_TLS_LDM_CALL:
2666 case elfcpp::R_SPARC_TLS_LDO_HIX22:
2667 case elfcpp::R_SPARC_TLS_LDO_LOX10:
2668 case elfcpp::R_SPARC_TLS_LDO_ADD:
2669 case elfcpp::R_SPARC_TLS_IE_HI22:
2670 case elfcpp::R_SPARC_TLS_IE_LO10:
2671 case elfcpp::R_SPARC_TLS_IE_LD:
2672 case elfcpp::R_SPARC_TLS_IE_LDX:
2673 case elfcpp::R_SPARC_TLS_LE_HIX22:
2674 case elfcpp::R_SPARC_TLS_LE_LOX10:
2675 this->relocate_tls(relinfo, target, relnum, rela,
2676 r_type, gsym, psymval, view,
2677 address, view_size);
2678 break;
2679
2680 case elfcpp::R_SPARC_COPY:
2681 case elfcpp::R_SPARC_GLOB_DAT:
2682 case elfcpp::R_SPARC_JMP_SLOT:
2683 case elfcpp::R_SPARC_RELATIVE:
2684 // These are outstanding tls relocs, which are unexpected when
2685 // linking.
2686 case elfcpp::R_SPARC_TLS_DTPMOD64:
2687 case elfcpp::R_SPARC_TLS_DTPMOD32:
2688 case elfcpp::R_SPARC_TLS_TPOFF64:
2689 case elfcpp::R_SPARC_TLS_TPOFF32:
2690 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2691 _("unexpected reloc %u in object file"),
2692 r_type);
2693 break;
2694
2695 default:
2696 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2697 _("unsupported reloc %u"),
2698 r_type);
2699 break;
2700 }
2701
2702 return true;
2703}
2704
2705// Perform a TLS relocation.
2706
2707template<int size, bool big_endian>
2708inline void
2709Target_sparc<size, big_endian>::Relocate::relocate_tls(
2710 const Relocate_info<size, big_endian>* relinfo,
2711 Target_sparc<size, big_endian>* target,
2712 size_t relnum,
2713 const elfcpp::Rela<size, big_endian>& rela,
2714 unsigned int r_type,
2715 const Sized_symbol<size>* gsym,
2716 const Symbol_value<size>* psymval,
2717 unsigned char* view,
2718 typename elfcpp::Elf_types<size>::Elf_Addr address,
2719 section_size_type)
2720{
2721 Output_segment* tls_segment = relinfo->layout->tls_segment();
2722 typedef Sparc_relocate_functions<size, big_endian> Reloc;
2723 const Sized_relobj<size, big_endian>* object = relinfo->object;
2724 typedef typename elfcpp::Swap<32, true>::Valtype Insntype;
2725
2726 const elfcpp::Elf_Xword addend = rela.get_r_addend();
2727 typename elfcpp::Elf_types<size>::Elf_Addr value = psymval->value(object, 0);
2728
2729 const bool is_final =
2730 (gsym == NULL
2731 ? !parameters->options().output_is_position_independent()
2732 : gsym->final_value_is_known());
2733 const tls::Tls_optimization optimized_type
2734 = optimize_tls_reloc(is_final, r_type);
2735
2736 switch (r_type)
2737 {
2738 case elfcpp::R_SPARC_TLS_GD_HI22:
2739 case elfcpp::R_SPARC_TLS_GD_LO10:
2740 case elfcpp::R_SPARC_TLS_GD_ADD:
2741 case elfcpp::R_SPARC_TLS_GD_CALL:
2742 if (optimized_type == tls::TLSOPT_TO_LE)
2743 {
2744 Insntype* wv = reinterpret_cast<Insntype*>(view);
2745 Insntype val;
2746
2747 value -= tls_segment->memsz();
2748
2749 switch (r_type)
2750 {
2751 case elfcpp::R_SPARC_TLS_GD_HI22:
2752 // TLS_GD_HI22 --> TLS_LE_HIX22
2753 Reloc::hix22(view, value, addend);
2754 break;
2755
2756 case elfcpp::R_SPARC_TLS_GD_LO10:
2757 // TLS_GD_LO10 --> TLS_LE_LOX10
2758 Reloc::lox10(view, value, addend);
2759 break;
2760
2761 case elfcpp::R_SPARC_TLS_GD_ADD:
2762 // add %reg1, %reg2, %reg3 --> mov %g7, %reg2, %reg3
2763 val = elfcpp::Swap<32, true>::readval(wv);
2764 val = (val & ~0x7c000) | 0x1c000;
2765 elfcpp::Swap<32, true>::writeval(wv, val);
2766 break;
2767 case elfcpp::R_SPARC_TLS_GD_CALL:
2768 // call __tls_get_addr --> nop
2769 elfcpp::Swap<32, true>::writeval(wv, sparc_nop);
2770 break;
2771 }
2772 break;
2773 }
2774 else
2775 {
2776 unsigned int got_type = (optimized_type == tls::TLSOPT_TO_IE
2777 ? GOT_TYPE_TLS_OFFSET
2778 : GOT_TYPE_TLS_PAIR);
2779 if (gsym != NULL)
2780 {
2781 gold_assert(gsym->has_got_offset(got_type));
2782 value = gsym->got_offset(got_type);
2783 }
2784 else
2785 {
2786 unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
2787 gold_assert(object->local_has_got_offset(r_sym, got_type));
2788 value = object->local_got_offset(r_sym, got_type);
2789 }
2790 if (optimized_type == tls::TLSOPT_TO_IE)
2791 {
2792 Insntype* wv = reinterpret_cast<Insntype*>(view);
2793 Insntype val;
2794
2795 switch (r_type)
2796 {
2797 case elfcpp::R_SPARC_TLS_GD_HI22:
2798 // TLS_GD_HI22 --> TLS_IE_HI22
2799 Reloc::hi22(view, value, addend);
2800 break;
2801
2802 case elfcpp::R_SPARC_TLS_GD_LO10:
2803 // TLS_GD_LO10 --> TLS_IE_LO10
2804 Reloc::lo10(view, value, addend);
2805 break;
2806
2807 case elfcpp::R_SPARC_TLS_GD_ADD:
2808 // add %reg1, %reg2, %reg3 --> ld [%reg1 + %reg2], %reg3
2809 val = elfcpp::Swap<32, true>::readval(wv);
2810
2811 if (size == 64)
2812 val |= 0xc0580000;
2813 else
2814 val |= 0xc0000000;
2815
2816 elfcpp::Swap<32, true>::writeval(wv, val);
2817 break;
2818
2819 case elfcpp::R_SPARC_TLS_GD_CALL:
2820 // The compiler can put the TLS_GD_ADD instruction
2821 // into the delay slot of the call. If so, we need
2822 // to transpose the two instructions so that the
2823 // the new sequence works properly.
2824 //
2825 // The test we use is if the instruction in the
2826 // delay slot is an add with destination register
2827 // equal to %o0
2828 val = elfcpp::Swap<32, true>::readval(wv + 1);
2829 if ((val & 0x81f80000) == 0x80000000
2830 && ((val >> 25) & 0x1f) == 0x8)
2831 {
2832 if (size == 64)
2833 val |= 0xc0580000;
2834 else
2835 val |= 0xc0000000;
2836
2837 elfcpp::Swap<32, true>::writeval(wv, val);
2838
2839 wv += 1;
2840 this->ignore_gd_add_ = true;
2841 }
2842
2843 // call __tls_get_addr --> add %g7, %o0, %o0
2844 elfcpp::Swap<32, true>::writeval(wv, 0x9001c008);
2845 break;
2846 }
2847 break;
2848 }
2849 else if (optimized_type == tls::TLSOPT_NONE)
2850 {
2851 switch (r_type)
2852 {
2853 case elfcpp::R_SPARC_TLS_GD_HI22:
2854 Reloc::hi22(view, value, addend);
2855 break;
2856 case elfcpp::R_SPARC_TLS_GD_LO10:
2857 Reloc::lo10(view, value, addend);
2858 break;
2859 case elfcpp::R_SPARC_TLS_GD_ADD:
2860 break;
2861 case elfcpp::R_SPARC_TLS_GD_CALL:
2862 {
2863 Symbol_value<size> symval;
2864 elfcpp::Elf_Xword value;
2865 Symbol* tsym;
2866
2867 tsym = target->tls_get_addr_sym_;
2868 gold_assert(tsym);
2869 value = (target->plt_section()->address() +
2870 tsym->plt_offset());
2871 symval.set_output_value(value);
2872 Reloc::wdisp30(view, object, &symval, addend, address);
2873 }
2874 break;
2875 }
2876 break;
2877 }
2878 }
2879 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2880 _("unsupported reloc %u"),
2881 r_type);
2882 break;
2883
2884 case elfcpp::R_SPARC_TLS_LDM_HI22:
2885 case elfcpp::R_SPARC_TLS_LDM_LO10:
2886 case elfcpp::R_SPARC_TLS_LDM_ADD:
2887 case elfcpp::R_SPARC_TLS_LDM_CALL:
2888 if (optimized_type == tls::TLSOPT_TO_LE)
2889 {
2890 Insntype* wv = reinterpret_cast<Insntype*>(view);
2891
2892 switch (r_type)
2893 {
2894 case elfcpp::R_SPARC_TLS_LDM_HI22:
2895 case elfcpp::R_SPARC_TLS_LDM_LO10:
2896 case elfcpp::R_SPARC_TLS_LDM_ADD:
2897 elfcpp::Swap<32, true>::writeval(wv, sparc_nop);
2898 break;
2899
2900 case elfcpp::R_SPARC_TLS_LDM_CALL:
2901 elfcpp::Swap<32, true>::writeval(wv, sparc_mov_g0_o0);
2902 break;
2903 }
2904 break;
2905 }
2906 else if (optimized_type == tls::TLSOPT_NONE)
2907 {
2908 // Relocate the field with the offset of the GOT entry for
2909 // the module index.
2910 unsigned int got_offset;
2911
2912 got_offset = target->got_mod_index_entry(NULL, NULL, NULL);
2913 switch (r_type)
2914 {
2915 case elfcpp::R_SPARC_TLS_LDM_HI22:
2916 Reloc::hi22(view, got_offset, addend);
2917 break;
2918 case elfcpp::R_SPARC_TLS_LDM_LO10:
2919 Reloc::lo10(view, got_offset, addend);
2920 break;
2921 case elfcpp::R_SPARC_TLS_LDM_ADD:
2922 break;
2923 case elfcpp::R_SPARC_TLS_LDM_CALL:
2924 {
2925 Symbol_value<size> symval;
2926 elfcpp::Elf_Xword value;
2927 Symbol* tsym;
2928
2929 tsym = target->tls_get_addr_sym_;
2930 gold_assert(tsym);
2931 value = (target->plt_section()->address() +
2932 tsym->plt_offset());
2933 symval.set_output_value(value);
2934 Reloc::wdisp30(view, object, &symval, addend, address);
2935 }
2936 break;
2937 }
2938 break;
2939 }
2940 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2941 _("unsupported reloc %u"),
2942 r_type);
2943 break;
2944
2945 // These relocs can appear in debugging sections, in which case
2946 // we won't see the TLS_LDM relocs. The local_dynamic_type
2947 // field tells us this.
2948 case elfcpp::R_SPARC_TLS_LDO_HIX22:
2949 if (optimized_type == tls::TLSOPT_TO_LE)
2950 {
2951 value -= tls_segment->memsz();
2952 Reloc::hix22(view, value, addend);
2953 }
2954 else
2955 Reloc::ldo_hix22(view, value, addend);
2956 break;
2957 case elfcpp::R_SPARC_TLS_LDO_LOX10:
2958 if (optimized_type == tls::TLSOPT_TO_LE)
2959 {
2960 value -= tls_segment->memsz();
2961 Reloc::lox10(view, value, addend);
2962 }
2963 else
2964 Reloc::ldo_lox10(view, value, addend);
2965 break;
2966 case elfcpp::R_SPARC_TLS_LDO_ADD:
2967 if (optimized_type == tls::TLSOPT_TO_LE)
2968 {
2969 Insntype* wv = reinterpret_cast<Insntype*>(view);
2970 Insntype val;
2971
2972 // add %reg1, %reg2, %reg3 --> add %g7, %reg2, %reg3
2973 val = elfcpp::Swap<32, true>::readval(wv);
2974 val = (val & ~0x7c000) | 0x1c000;
2975 elfcpp::Swap<32, true>::writeval(wv, val);
2976 }
2977 break;
2978
2979 // When optimizing IE --> LE, the only relocation that is handled
2980 // differently is R_SPARC_TLS_IE_LD, it is rewritten from
2981 // 'ld{,x} [rs1 + rs2], rd' into 'mov rs2, rd' or simply a NOP is
2982 // rs2 and rd are the same.
2983 case elfcpp::R_SPARC_TLS_IE_LD:
2984 case elfcpp::R_SPARC_TLS_IE_LDX:
2985 if (optimized_type == tls::TLSOPT_TO_LE)
2986 {
2987 Insntype* wv = reinterpret_cast<Insntype*>(view);
2988 Insntype val = elfcpp::Swap<32, true>::readval(wv);
2989 Insntype rs2 = val & 0x1f;
2990 Insntype rd = (val >> 25) & 0x1f;
2991
2992 if (rs2 == rd)
2993 val = sparc_nop;
2994 else
2995 val = sparc_mov | (val & 0x3e00001f);
2996
2997 elfcpp::Swap<32, true>::writeval(wv, val);
2998 }
2999 break;
3000
3001 case elfcpp::R_SPARC_TLS_IE_HI22:
3002 case elfcpp::R_SPARC_TLS_IE_LO10:
3003 if (optimized_type == tls::TLSOPT_TO_LE)
3004 {
3005 value -= tls_segment->memsz();
3006 switch (r_type)
3007 {
3008 case elfcpp::R_SPARC_TLS_IE_HI22:
3009 // IE_HI22 --> LE_HIX22
3010 Reloc::hix22(view, value, addend);
3011 break;
3012 case elfcpp::R_SPARC_TLS_IE_LO10:
3013 // IE_LO10 --> LE_LOX10
3014 Reloc::lox10(view, value, addend);
3015 break;
3016 }
3017 break;
3018 }
3019 else if (optimized_type == tls::TLSOPT_NONE)
3020 {
3021 // Relocate the field with the offset of the GOT entry for
3022 // the tp-relative offset of the symbol.
3023 if (gsym != NULL)
3024 {
3025 gold_assert(gsym->has_got_offset(GOT_TYPE_TLS_OFFSET));
3026 value = gsym->got_offset(GOT_TYPE_TLS_OFFSET);
3027 }
3028 else
3029 {
3030 unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
3031 gold_assert(object->local_has_got_offset(r_sym,
3032 GOT_TYPE_TLS_OFFSET));
3033 value = object->local_got_offset(r_sym,
3034 GOT_TYPE_TLS_OFFSET);
3035 }
3036 switch (r_type)
3037 {
3038 case elfcpp::R_SPARC_TLS_IE_HI22:
3039 Reloc::hi22(view, value, addend);
3040 break;
3041 case elfcpp::R_SPARC_TLS_IE_LO10:
3042 Reloc::lo10(view, value, addend);
3043 break;
3044 }
3045 break;
3046 }
3047 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
3048 _("unsupported reloc %u"),
3049 r_type);
3050 break;
3051
3052 case elfcpp::R_SPARC_TLS_LE_HIX22:
3053 // If we're creating a shared library, a dynamic relocation will
3054 // have been created for this location, so do not apply it now.
3055 if (!parameters->options().shared())
3056 {
3057 value -= tls_segment->memsz();
3058 Reloc::hix22(view, value, addend);
3059 }
3060 break;
3061
3062 case elfcpp::R_SPARC_TLS_LE_LOX10:
3063 // If we're creating a shared library, a dynamic relocation will
3064 // have been created for this location, so do not apply it now.
3065 if (!parameters->options().shared())
3066 {
3067 value -= tls_segment->memsz();
3068 Reloc::lox10(view, value, addend);
3069 }
3070 break;
3071 }
3072}
3073
3074// Relocate section data.
3075
3076template<int size, bool big_endian>
3077void
3078Target_sparc<size, big_endian>::relocate_section(
3079 const Relocate_info<size, big_endian>* relinfo,
3080 unsigned int sh_type,
3081 const unsigned char* prelocs,
3082 size_t reloc_count,
3083 Output_section* output_section,
3084 bool needs_special_offset_handling,
3085 unsigned char* view,
3086 typename elfcpp::Elf_types<size>::Elf_Addr address,
3087 section_size_type view_size)
3088{
3089 typedef Target_sparc<size, big_endian> Sparc;
3090 typedef typename Target_sparc<size, big_endian>::Relocate Sparc_relocate;
3091
3092 gold_assert(sh_type == elfcpp::SHT_RELA);
3093
3094 gold::relocate_section<size, big_endian, Sparc, elfcpp::SHT_RELA,
3095 Sparc_relocate>(
3096 relinfo,
3097 this,
3098 prelocs,
3099 reloc_count,
3100 output_section,
3101 needs_special_offset_handling,
3102 view,
3103 address,
3104 view_size);
3105}
3106
3107// Return the size of a relocation while scanning during a relocatable
3108// link.
3109
3110template<int size, bool big_endian>
3111unsigned int
3112Target_sparc<size, big_endian>::Relocatable_size_for_reloc::get_size_for_reloc(
3113 unsigned int,
3114 Relobj*)
3115{
3116 // We are always SHT_RELA, so we should never get here.
3117 gold_unreachable();
3118 return 0;
3119}
3120
3121// Scan the relocs during a relocatable link.
3122
3123template<int size, bool big_endian>
3124void
3125Target_sparc<size, big_endian>::scan_relocatable_relocs(
3126 const General_options& options,
3127 Symbol_table* symtab,
3128 Layout* layout,
3129 Sized_relobj<size, big_endian>* object,
3130 unsigned int data_shndx,
3131 unsigned int sh_type,
3132 const unsigned char* prelocs,
3133 size_t reloc_count,
3134 Output_section* output_section,
3135 bool needs_special_offset_handling,
3136 size_t local_symbol_count,
3137 const unsigned char* plocal_symbols,
3138 Relocatable_relocs* rr)
3139{
3140 gold_assert(sh_type == elfcpp::SHT_RELA);
3141
3142 typedef gold::Default_scan_relocatable_relocs<elfcpp::SHT_RELA,
3143 Relocatable_size_for_reloc> Scan_relocatable_relocs;
3144
3145 gold::scan_relocatable_relocs<size, big_endian, elfcpp::SHT_RELA,
3146 Scan_relocatable_relocs>(
3147 options,
3148 symtab,
3149 layout,
3150 object,
3151 data_shndx,
3152 prelocs,
3153 reloc_count,
3154 output_section,
3155 needs_special_offset_handling,
3156 local_symbol_count,
3157 plocal_symbols,
3158 rr);
3159}
3160
3161// Relocate a section during a relocatable link.
3162
3163template<int size, bool big_endian>
3164void
3165Target_sparc<size, big_endian>::relocate_for_relocatable(
3166 const Relocate_info<size, big_endian>* relinfo,
3167 unsigned int sh_type,
3168 const unsigned char* prelocs,
3169 size_t reloc_count,
3170 Output_section* output_section,
3171 off_t offset_in_output_section,
3172 const Relocatable_relocs* rr,
3173 unsigned char* view,
3174 typename elfcpp::Elf_types<size>::Elf_Addr view_address,
3175 section_size_type view_size,
3176 unsigned char* reloc_view,
3177 section_size_type reloc_view_size)
3178{
3179 gold_assert(sh_type == elfcpp::SHT_RELA);
3180
3181 gold::relocate_for_relocatable<size, big_endian, elfcpp::SHT_RELA>(
3182 relinfo,
3183 prelocs,
3184 reloc_count,
3185 output_section,
3186 offset_in_output_section,
3187 rr,
3188 view,
3189 view_address,
3190 view_size,
3191 reloc_view,
3192 reloc_view_size);
3193}
3194
3195// Return the value to use for a dynamic which requires special
3196// treatment. This is how we support equality comparisons of function
3197// pointers across shared library boundaries, as described in the
3198// processor specific ABI supplement.
3199
3200template<int size, bool big_endian>
3201uint64_t
3202Target_sparc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const
3203{
3204 gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset());
3205 return this->plt_section()->address() + gsym->plt_offset();
3206}
3207
3208// The selector for sparc object files.
3209
3210template<int size, bool big_endian>
3211class Target_selector_sparc : public Target_selector
3212{
3213public:
3214 Target_selector_sparc()
3215 : Target_selector(elfcpp::EM_NONE, size, big_endian,
3216 (size == 64 ? "elf64-sparc" : "elf32-sparc"))
3217 { }
3218
3219 Target* instantiated_target_;
3220
3221 Target* do_recognize(int machine, int, int)
3222 {
3223 switch (size)
3224 {
3225 case 64:
3226 if (machine != elfcpp::EM_SPARCV9)
3227 return NULL;
3228 break;
3229
3230 case 32:
3231 if (machine != elfcpp::EM_SPARC
3232 && machine != elfcpp::EM_SPARC32PLUS)
3233 return NULL;
3234 break;
3235
3236 default:
3237 return NULL;
3238 }
3239
3240 return do_instantiate_target();
3241 }
3242
3243 Target* do_instantiate_target()
3244 {
3245 if (this->instantiated_target_ == NULL)
3246 this->instantiated_target_ = new Target_sparc<size, big_endian>();
3247 return this->instantiated_target_;
3248 }
3249};
3250
3251Target_selector_sparc<32, true> target_selector_sparc32;
3252Target_selector_sparc<64, true> target_selector_sparc64;
3253
3254} // End anonymous namespace.
GDB Binutils - Deliverables
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