projects / deliverable / binutils-gdb.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
gold/
[deliverable/binutils-gdb.git] / gold / sparc.cc
CommitLineData
f5314dd5
DM		 1// sparc.cc -- sparc target support for gold.
2
6d03d481 3// Copyright 2008, 2009 Free Software Foundation, Inc.
f5314dd5
DM		 4// Written by David S. Miller <davem@davemloft.net>.
5
6// This file is part of gold.
7
8// This program is free software; you can redistribute it and/or modify
9// it under the terms of the GNU General Public License as published by
10// the Free Software Foundation; either version 3 of the License, or
11// (at your option) any later version.
12
13// This program is distributed in the hope that it will be useful,
14// but WITHOUT ANY WARRANTY; without even the implied warranty of
15// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16// GNU General Public License for more details.
17
18// You should have received a copy of the GNU General Public License
19// along with this program; if not, write to the Free Software
20// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21// MA 02110-1301, USA.
22
23#include "gold.h"
24
25#include <cstdlib>
26#include <cstdio>
27#include <cstring>
28
29#include "elfcpp.h"
30#include "parameters.h"
31#include "reloc.h"
32#include "sparc.h"
33#include "object.h"
34#include "symtab.h"
35#include "layout.h"
36#include "output.h"
12c0daef 37#include "copy-relocs.h"
f5314dd5
DM		 38#include "target.h"
39#include "target-reloc.h"
40#include "target-select.h"
41#include "tls.h"
42#include "errors.h"
f345227a 43#include "gc.h"
f5314dd5
DM		 44
45namespace
46{
47
48using namespace gold;
49
50template<int size, bool big_endian>
51class Output_data_plt_sparc;
52
53template<int size, bool big_endian>
54class Target_sparc : public Sized_target<size, big_endian>
55{
56 public:
57 typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section;
58
59 Target_sparc()
60 : Sized_target<size, big_endian>(&sparc_info),
61 got_(NULL), plt_(NULL), rela_dyn_(NULL),
12c0daef
ILT		 62 copy_relocs_(elfcpp::R_SPARC_COPY), dynbss_(NULL),
63 got_mod_index_offset_(-1U), tls_get_addr_sym_(NULL)
f5314dd5
DM		 64 {
65 }
66
6d03d481
ST		 67 // Process the relocations to determine unreferenced sections for
68 // garbage collection.
69 void
ad0f2072 70 gc_process_relocs(Symbol_table* symtab,
6d03d481
ST		 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
f5314dd5
DM		 82 // Scan the relocations to look for symbol adjustments.
83 void
ad0f2072 84 scan_relocs(Symbol_table* symtab,
f5314dd5
DM		 85 Layout* layout,
86 Sized_relobj<size, big_endian>* object,
87 unsigned int data_shndx,
88 unsigned int sh_type,
89 const unsigned char* prelocs,
90 size_t reloc_count,
91 Output_section* output_section,
92 bool needs_special_offset_handling,
93 size_t local_symbol_count,
94 const unsigned char* plocal_symbols);
95 // Finalize the sections.
96 void
f59f41f3 97 do_finalize_sections(Layout*, const Input_objects*, Symbol_table*);
f5314dd5
DM		 98
99 // Return the value to use for a dynamic which requires special
100 // treatment.
101 uint64_t
102 do_dynsym_value(const Symbol*) const;
103
104 // Relocate a section.
105 void
106 relocate_section(const Relocate_info<size, big_endian>*,
107 unsigned int sh_type,
108 const unsigned char* prelocs,
109 size_t reloc_count,
110 Output_section* output_section,
111 bool needs_special_offset_handling,
112 unsigned char* view,
113 typename elfcpp::Elf_types<size>::Elf_Addr view_address,
364c7fa5
ILT		 114 section_size_type view_size,
115 const Reloc_symbol_changes*);
f5314dd5
DM		 116
117 // Scan the relocs during a relocatable link.
118 void
ad0f2072 119 scan_relocatable_relocs(Symbol_table* symtab,
f5314dd5
DM		 120 Layout* layout,
121 Sized_relobj<size, big_endian>* object,
122 unsigned int data_shndx,
123 unsigned int sh_type,
124 const unsigned char* prelocs,
125 size_t reloc_count,
126 Output_section* output_section,
127 bool needs_special_offset_handling,
128 size_t local_symbol_count,
129 const unsigned char* plocal_symbols,
130 Relocatable_relocs*);
131
132 // Relocate a section during a relocatable link.
133 void
134 relocate_for_relocatable(const Relocate_info<size, big_endian>*,
135 unsigned int sh_type,
136 const unsigned char* prelocs,
137 size_t reloc_count,
138 Output_section* output_section,
139 off_t offset_in_output_section,
140 const Relocatable_relocs*,
141 unsigned char* view,
142 typename elfcpp::Elf_types<size>::Elf_Addr view_address,
143 section_size_type view_size,
144 unsigned char* reloc_view,
145 section_size_type reloc_view_size);
146 // Return whether SYM is defined by the ABI.
147 bool
9c2d0ef9 148 do_is_defined_by_abi(const Symbol* sym) const
f5314dd5
DM		 149 {
150 // XXX Really need to support this better...
151 if (sym->type() == elfcpp::STT_SPARC_REGISTER)
152 return 1;
153
154 return strcmp(sym->name(), "___tls_get_addr") == 0;
155 }
156
9efe6174
ILT		 157 // Return whether there is a GOT section.
158 bool
159 has_got_section() const
160 { return this->got_ != NULL; }
161
f5314dd5
DM		 162 // Return the size of the GOT section.
163 section_size_type
164 got_size()
165 {
166 gold_assert(this->got_ != NULL);
167 return this->got_->data_size();
168 }
169
170 private:
171
172 // The class which scans relocations.
32b769e1 173 class Scan
f5314dd5 174 {
32b769e1
DM		 175 public:
176 Scan()
177 : issued_non_pic_error_(false)
178 { }
179
f5314dd5 180 inline void
ad0f2072 181 local(Symbol_table* symtab, Layout* layout, Target_sparc* target,
f5314dd5
DM		 182 Sized_relobj<size, big_endian>* object,
183 unsigned int data_shndx,
184 Output_section* output_section,
185 const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type,
186 const elfcpp::Sym<size, big_endian>& lsym);
187
188 inline void
ad0f2072 189 global(Symbol_table* symtab, Layout* layout, Target_sparc* target,
f5314dd5
DM		 190 Sized_relobj<size, big_endian>* object,
191 unsigned int data_shndx,
192 Output_section* output_section,
193 const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type,
194 Symbol* gsym);
195
32b769e1 196 private:
f5314dd5
DM		 197 static void
198 unsupported_reloc_local(Sized_relobj<size, big_endian>*,
199 unsigned int r_type);
200
201 static void
202 unsupported_reloc_global(Sized_relobj<size, big_endian>*,
203 unsigned int r_type, Symbol*);
204
205 static void
206 generate_tls_call(Symbol_table* symtab, Layout* layout,
207 Target_sparc* target);
32b769e1
DM		 208
209 void
210 check_non_pic(Relobj*, unsigned int r_type);
211
212 // Whether we have issued an error about a non-PIC compilation.
213 bool issued_non_pic_error_;
f5314dd5
DM		 214 };
215
216 // The class which implements relocation.
217 class Relocate
218 {
219 public:
220 Relocate()
221 : ignore_gd_add_(false)
222 { }
223
224 ~Relocate()
225 {
226 if (this->ignore_gd_add_)
227 {
228 // FIXME: This needs to specify the location somehow.
229 gold_error(_("missing expected TLS relocation"));
230 }
231 }
232
233 // Do a relocation. Return false if the caller should not issue
234 // any warnings about this relocation.
235 inline bool
236 relocate(const Relocate_info<size, big_endian>*, Target_sparc*,
031cdbed
ILT		 237 Output_section*, size_t relnum,
238 const elfcpp::Rela<size, big_endian>&,
f5314dd5
DM		 239 unsigned int r_type, const Sized_symbol<size>*,
240 const Symbol_value<size>*,
241 unsigned char*,
242 typename elfcpp::Elf_types<size>::Elf_Addr,
243 section_size_type);
244
245 private:
246 // Do a TLS relocation.
247 inline void
248 relocate_tls(const Relocate_info<size, big_endian>*, Target_sparc* target,
249 size_t relnum, const elfcpp::Rela<size, big_endian>&,
250 unsigned int r_type, const Sized_symbol<size>*,
251 const Symbol_value<size>*,
252 unsigned char*,
253 typename elfcpp::Elf_types<size>::Elf_Addr,
254 section_size_type);
255
256 // Ignore the next relocation which should be R_SPARC_TLS_GD_ADD
257 bool ignore_gd_add_;
258 };
259
260 // A class which returns the size required for a relocation type,
261 // used while scanning relocs during a relocatable link.
262 class Relocatable_size_for_reloc
263 {
264 public:
265 unsigned int
266 get_size_for_reloc(unsigned int, Relobj*);
267 };
268
269 // Get the GOT section, creating it if necessary.
270 Output_data_got<size, big_endian>*
271 got_section(Symbol_table*, Layout*);
272
273 // Create a PLT entry for a global symbol.
274 void
275 make_plt_entry(Symbol_table*, Layout*, Symbol*);
276
277 // Create a GOT entry for the TLS module index.
278 unsigned int
279 got_mod_index_entry(Symbol_table* symtab, Layout* layout,
280 Sized_relobj<size, big_endian>* object);
281
282 // Return the gsym for "__tls_get_addr". Cache if not already
283 // cached.
284 Symbol*
285 tls_get_addr_sym(Symbol_table* symtab)
286 {
287 if (!this->tls_get_addr_sym_)
288 this->tls_get_addr_sym_ = symtab->lookup("__tls_get_addr", NULL);
289 gold_assert(this->tls_get_addr_sym_);
290 return this->tls_get_addr_sym_;
291 }
292
293 // Get the PLT section.
294 const Output_data_plt_sparc<size, big_endian>*
295 plt_section() const
296 {
297 gold_assert(this->plt_ != NULL);
298 return this->plt_;
299 }
300
301 // Get the dynamic reloc section, creating it if necessary.
302 Reloc_section*
303 rela_dyn_section(Layout*);
304
f5314dd5
DM		 305 // Copy a relocation against a global symbol.
306 void
ef9beddf
ILT		 307 copy_reloc(Symbol_table* symtab, Layout* layout,
308 Sized_relobj<size, big_endian>* object,
12c0daef
ILT		 309 unsigned int shndx, Output_section* output_section,
310 Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc)
311 {
312 this->copy_relocs_.copy_reloc(symtab, layout,
313 symtab->get_sized_symbol<size>(sym),
314 object, shndx, output_section,
315 reloc, this->rela_dyn_section(layout));
316 }
f5314dd5
DM		 317
318 // Information about this specific target which we pass to the
319 // general Target structure.
320 static Target::Target_info sparc_info;
321
322 // The types of GOT entries needed for this platform.
323 enum Got_type
324 {
325 GOT_TYPE_STANDARD = 0, // GOT entry for a regular symbol
326 GOT_TYPE_TLS_OFFSET = 1, // GOT entry for TLS offset
327 GOT_TYPE_TLS_PAIR = 2, // GOT entry for TLS module/offset pair
328 };
329
330 // The GOT section.
331 Output_data_got<size, big_endian>* got_;
332 // The PLT section.
333 Output_data_plt_sparc<size, big_endian>* plt_;
334 // The dynamic reloc section.
335 Reloc_section* rela_dyn_;
336 // Relocs saved to avoid a COPY reloc.
12c0daef 337 Copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_;
f5314dd5
DM		 338 // Space for variables copied with a COPY reloc.
339 Output_data_space* dynbss_;
340 // Offset of the GOT entry for the TLS module index;
341 unsigned int got_mod_index_offset_;
342 // Cached pointer to __tls_get_addr symbol
343 Symbol* tls_get_addr_sym_;
344};
345
346template<>
347Target::Target_info Target_sparc<32, true>::sparc_info =
348{
349 32, // size
350 true, // is_big_endian
351 elfcpp::EM_SPARC, // machine_code
352 false, // has_make_symbol
353 false, // has_resolve
354 false, // has_code_fill
355 true, // is_default_stack_executable
356 '\0', // wrap_char
357 "/usr/lib/ld.so.1", // dynamic_linker
358 0x00010000, // default_text_segment_address
359 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
8a5e3e08
ILT		 360 8 * 1024, // common_pagesize (overridable by -z common-page-size)
361 elfcpp::SHN_UNDEF, // small_common_shndx
362 elfcpp::SHN_UNDEF, // large_common_shndx
363 0, // small_common_section_flags
05a352e6
DK		 364 0, // large_common_section_flags
365 NULL, // attributes_section
366 NULL // attributes_vendor
f5314dd5
DM		 367};
368
369template<>
370Target::Target_info Target_sparc<64, true>::sparc_info =
371{
372 64, // size
373 true, // is_big_endian
374 elfcpp::EM_SPARCV9, // machine_code
375 false, // has_make_symbol
376 false, // has_resolve
377 false, // has_code_fill
378 true, // is_default_stack_executable
379 '\0', // wrap_char
380 "/usr/lib/sparcv9/ld.so.1", // dynamic_linker
381 0x100000, // default_text_segment_address
382 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
8a5e3e08
ILT		 383 8 * 1024, // common_pagesize (overridable by -z common-page-size)
384 elfcpp::SHN_UNDEF, // small_common_shndx
385 elfcpp::SHN_UNDEF, // large_common_shndx
386 0, // small_common_section_flags
05a352e6
DK		 387 0, // large_common_section_flags
388 NULL, // attributes_section
389 NULL // attributes_vendor
f5314dd5
DM		 390};
391
392// We have to take care here, even when operating in little-endian
393// mode, sparc instructions are still big endian.
394template<int size, bool big_endian>
395class Sparc_relocate_functions
396{
397private:
398 // Do a simple relocation with the addend in the relocation.
399 template<int valsize>
400 static inline void
401 rela(unsigned char* view,
402 unsigned int right_shift,
403 typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
2ea97941 404 typename elfcpp::Swap<size, big_endian>::Valtype value,
f5314dd5
DM		 405 typename elfcpp::Swap<size, big_endian>::Valtype addend)
406 {
407 typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
408 Valtype* wv = reinterpret_cast<Valtype*>(view);
409 Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
2ea97941 410 Valtype reloc = ((value + addend) >> right_shift);
f5314dd5
DM		 411
412 val &= ~dst_mask;
413 reloc &= dst_mask;
414
415 elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
416 }
417
418 // Do a simple relocation using a symbol value with the addend in
419 // the relocation.
420 template<int valsize>
421 static inline void
422 rela(unsigned char* view,
423 unsigned int right_shift,
424 typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
425 const Sized_relobj<size, big_endian>* object,
426 const Symbol_value<size>* psymval,
427 typename elfcpp::Swap<valsize, big_endian>::Valtype addend)
428 {
429 typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
430 Valtype* wv = reinterpret_cast<Valtype*>(view);
431 Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
432 Valtype reloc = (psymval->value(object, addend) >> right_shift);
433
434 val &= ~dst_mask;
435 reloc &= dst_mask;
436
437 elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
438 }
439
440 // Do a simple relocation using a symbol value with the addend in
441 // the relocation, unaligned.
442 template<int valsize>
443 static inline void
444 rela_ua(unsigned char* view,
445 unsigned int right_shift, elfcpp::Elf_Xword dst_mask,
446 const Sized_relobj<size, big_endian>* object,
447 const Symbol_value<size>* psymval,
448 typename elfcpp::Swap<size, big_endian>::Valtype addend)
449 {
450 typedef typename elfcpp::Swap_unaligned<valsize,
451 big_endian>::Valtype Valtype;
452 unsigned char* wv = view;
453 Valtype val = elfcpp::Swap_unaligned<valsize, big_endian>::readval(wv);
454 Valtype reloc = (psymval->value(object, addend) >> right_shift);
455
456 val &= ~dst_mask;
457 reloc &= dst_mask;
458
459 elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, val | reloc);
460 }
461
462 // Do a simple PC relative relocation with a Symbol_value with the
463 // addend in the relocation.
464 template<int valsize>
465 static inline void
466 pcrela(unsigned char* view,
467 unsigned int right_shift,
468 typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
469 const Sized_relobj<size, big_endian>* object,
470 const Symbol_value<size>* psymval,
471 typename elfcpp::Swap<size, big_endian>::Valtype addend,
472 typename elfcpp::Elf_types<size>::Elf_Addr address)
473 {
474 typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
475 Valtype* wv = reinterpret_cast<Valtype*>(view);
476 Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
477 Valtype reloc = ((psymval->value(object, addend) - address)
478 >> right_shift);
479
480 val &= ~dst_mask;
481 reloc &= dst_mask;
482
483 elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
484 }
485
486 template<int valsize>
487 static inline void
488 pcrela_unaligned(unsigned char* view,
489 const Sized_relobj<size, big_endian>* object,
490 const Symbol_value<size>* psymval,
491 typename elfcpp::Swap<size, big_endian>::Valtype addend,
492 typename elfcpp::Elf_types<size>::Elf_Addr address)
493 {
494 typedef typename elfcpp::Swap_unaligned<valsize,
495 big_endian>::Valtype Valtype;
496 unsigned char* wv = view;
497 Valtype reloc = (psymval->value(object, addend) - address);
498
499 elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, reloc);
500 }
501
502 typedef Sparc_relocate_functions<size, big_endian> This;
503 typedef Sparc_relocate_functions<size, true> This_insn;
504
505public:
506 // R_SPARC_WDISP30: (Symbol + Addend - Address) >> 2
507 static inline void
508 wdisp30(unsigned char* view,
509 const Sized_relobj<size, big_endian>* object,
510 const Symbol_value<size>* psymval,
511 typename elfcpp::Elf_types<size>::Elf_Addr addend,
512 typename elfcpp::Elf_types<size>::Elf_Addr address)
513 {
514 This_insn::template pcrela<32>(view, 2, 0x3fffffff, object,
515 psymval, addend, address);
516 }
517
518 // R_SPARC_WDISP22: (Symbol + Addend - Address) >> 2
519 static inline void
520 wdisp22(unsigned char* view,
521 const Sized_relobj<size, big_endian>* object,
522 const Symbol_value<size>* psymval,
523 typename elfcpp::Elf_types<size>::Elf_Addr addend,
524 typename elfcpp::Elf_types<size>::Elf_Addr address)
525 {
526 This_insn::template pcrela<32>(view, 2, 0x003fffff, object,
527 psymval, addend, address);
528 }
529
530 // R_SPARC_WDISP19: (Symbol + Addend - Address) >> 2
531 static inline void
532 wdisp19(unsigned char* view,
533 const Sized_relobj<size, big_endian>* object,
534 const Symbol_value<size>* psymval,
535 typename elfcpp::Elf_types<size>::Elf_Addr addend,
536 typename elfcpp::Elf_types<size>::Elf_Addr address)
537 {
538 This_insn::template pcrela<32>(view, 2, 0x0007ffff, object,
539 psymval, addend, address);
540 }
541
542 // R_SPARC_WDISP16: (Symbol + Addend - Address) >> 2
543 static inline void
544 wdisp16(unsigned char* view,
545 const Sized_relobj<size, big_endian>* object,
546 const Symbol_value<size>* psymval,
547 typename elfcpp::Elf_types<size>::Elf_Addr addend,
548 typename elfcpp::Elf_types<size>::Elf_Addr address)
549 {
550 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
551 Valtype* wv = reinterpret_cast<Valtype*>(view);
552 Valtype val = elfcpp::Swap<32, true>::readval(wv);
553 Valtype reloc = ((psymval->value(object, addend) - address)
554 >> 2);
555
556 // The relocation value is split between the low 14 bits,
557 // and bits 20-21.
558 val &= ~((0x3 << 20) | 0x3fff);
559 reloc = (((reloc & 0xc000) << (20 - 14))
560 | (reloc & 0x3ffff));
561
562 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
563 }
564
565 // R_SPARC_PC22: (Symbol + Addend - Address) >> 10
566 static inline void
567 pc22(unsigned char* view,
568 const Sized_relobj<size, big_endian>* object,
569 const Symbol_value<size>* psymval,
570 typename elfcpp::Elf_types<size>::Elf_Addr addend,
571 typename elfcpp::Elf_types<size>::Elf_Addr address)
572 {
573 This_insn::template pcrela<32>(view, 10, 0x003fffff, object,
574 psymval, addend, address);
575 }
576
577 // R_SPARC_PC10: (Symbol + Addend - Address) & 0x3ff
578 static inline void
579 pc10(unsigned char* view,
580 const Sized_relobj<size, big_endian>* object,
581 const Symbol_value<size>* psymval,
582 typename elfcpp::Elf_types<size>::Elf_Addr addend,
583 typename elfcpp::Elf_types<size>::Elf_Addr address)
584 {
585 This_insn::template pcrela<32>(view, 0, 0x000003ff, object,
586 psymval, addend, address);
587 }
588
589 // R_SPARC_HI22: (Symbol + Addend) >> 10
590 static inline void
591 hi22(unsigned char* view,
2ea97941 592 typename elfcpp::Elf_types<size>::Elf_Addr value,
f5314dd5
DM		 593 typename elfcpp::Elf_types<size>::Elf_Addr addend)
594 {
2ea97941 595 This_insn::template rela<32>(view, 10, 0x003fffff, value, addend);
f5314dd5
DM		 596 }
597
598 // R_SPARC_HI22: (Symbol + Addend) >> 10
599 static inline void
600 hi22(unsigned char* view,
601 const Sized_relobj<size, big_endian>* object,
602 const Symbol_value<size>* psymval,
603 typename elfcpp::Elf_types<size>::Elf_Addr addend)
604 {
605 This_insn::template rela<32>(view, 10, 0x003fffff, object, psymval, addend);
606 }
607
608 // R_SPARC_PCPLT22: (Symbol + Addend - Address) >> 10
609 static inline void
610 pcplt22(unsigned char* view,
611 const Sized_relobj<size, big_endian>* object,
612 const Symbol_value<size>* psymval,
613 typename elfcpp::Elf_types<size>::Elf_Addr addend,
614 typename elfcpp::Elf_types<size>::Elf_Addr address)
615 {
616 This_insn::template pcrela<32>(view, 10, 0x003fffff, object,
617 psymval, addend, address);
618 }
619
620 // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
621 static inline void
622 lo10(unsigned char* view,
2ea97941 623 typename elfcpp::Elf_types<size>::Elf_Addr value,
f5314dd5
DM		 624 typename elfcpp::Elf_types<size>::Elf_Addr addend)
625 {
2ea97941 626 This_insn::template rela<32>(view, 0, 0x000003ff, value, addend);
f5314dd5
DM		 627 }
628
629 // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
630 static inline void
631 lo10(unsigned char* view,
632 const Sized_relobj<size, big_endian>* object,
633 const Symbol_value<size>* psymval,
634 typename elfcpp::Elf_types<size>::Elf_Addr addend)
635 {
636 This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend);
637 }
638
639 // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
640 static inline void
641 lo10(unsigned char* view,
642 const Sized_relobj<size, big_endian>* object,
643 const Symbol_value<size>* psymval,
644 typename elfcpp::Elf_types<size>::Elf_Addr addend,
645 typename elfcpp::Elf_types<size>::Elf_Addr address)
646 {
647 This_insn::template pcrela<32>(view, 0, 0x000003ff, object,
648 psymval, addend, address);
649 }
650
651 // R_SPARC_OLO10: ((Symbol + Addend) & 0x3ff) + Addend2
652 static inline void
653 olo10(unsigned char* view,
654 const Sized_relobj<size, big_endian>* object,
655 const Symbol_value<size>* psymval,
656 typename elfcpp::Elf_types<size>::Elf_Addr addend,
657 typename elfcpp::Elf_types<size>::Elf_Addr addend2)
658 {
659 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
660 Valtype* wv = reinterpret_cast<Valtype*>(view);
661 Valtype val = elfcpp::Swap<32, true>::readval(wv);
662 Valtype reloc = psymval->value(object, addend);
663
664 val &= ~0x1fff;
665 reloc &= 0x3ff;
666 reloc += addend2;
667 reloc &= 0x1fff;
668
669 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
670 }
671
672 // R_SPARC_22: (Symbol + Addend)
673 static inline void
674 rela32_22(unsigned char* view,
675 const Sized_relobj<size, big_endian>* object,
676 const Symbol_value<size>* psymval,
677 typename elfcpp::Elf_types<size>::Elf_Addr addend)
678 {
679 This_insn::template rela<32>(view, 0, 0x003fffff, object, psymval, addend);
680 }
681
682 // R_SPARC_13: (Symbol + Addend)
683 static inline void
684 rela32_13(unsigned char* view,
2ea97941 685 typename elfcpp::Elf_types<size>::Elf_Addr value,
f5314dd5
DM		 686 typename elfcpp::Elf_types<size>::Elf_Addr addend)
687 {
2ea97941 688 This_insn::template rela<32>(view, 0, 0x00001fff, value, addend);
f5314dd5
DM		 689 }
690
691 // R_SPARC_13: (Symbol + Addend)
692 static inline void
693 rela32_13(unsigned char* view,
694 const Sized_relobj<size, big_endian>* object,
695 const Symbol_value<size>* psymval,
696 typename elfcpp::Elf_types<size>::Elf_Addr addend)
697 {
698 This_insn::template rela<32>(view, 0, 0x00001fff, object, psymval, addend);
699 }
700
701 // R_SPARC_UA16: (Symbol + Addend)
702 static inline void
703 ua16(unsigned char* view,
704 const Sized_relobj<size, big_endian>* object,
705 const Symbol_value<size>* psymval,
706 typename elfcpp::Elf_types<size>::Elf_Addr addend)
707 {
708 This::template rela_ua<16>(view, 0, 0xffff, object, psymval, addend);
709 }
710
711 // R_SPARC_UA32: (Symbol + Addend)
712 static inline void
713 ua32(unsigned char* view,
714 const Sized_relobj<size, big_endian>* object,
715 const Symbol_value<size>* psymval,
716 typename elfcpp::Elf_types<size>::Elf_Addr addend)
717 {
718 This::template rela_ua<32>(view, 0, 0xffffffff, object, psymval, addend);
719 }
720
721 // R_SPARC_UA64: (Symbol + Addend)
722 static inline void
723 ua64(unsigned char* view,
724 const Sized_relobj<size, big_endian>* object,
725 const Symbol_value<size>* psymval,
726 typename elfcpp::Elf_types<size>::Elf_Addr addend)
727 {
728 This::template rela_ua<64>(view, 0, ~(elfcpp::Elf_Xword) 0,
729 object, psymval, addend);
730 }
731
732 // R_SPARC_DISP8: (Symbol + Addend - Address)
733 static inline void
734 disp8(unsigned char* view,
735 const Sized_relobj<size, big_endian>* object,
736 const Symbol_value<size>* psymval,
737 typename elfcpp::Elf_types<size>::Elf_Addr addend,
738 typename elfcpp::Elf_types<size>::Elf_Addr address)
739 {
740 This::template pcrela_unaligned<8>(view, object, psymval,
741 addend, address);
742 }
743
744 // R_SPARC_DISP16: (Symbol + Addend - Address)
745 static inline void
746 disp16(unsigned char* view,
747 const Sized_relobj<size, big_endian>* object,
748 const Symbol_value<size>* psymval,
749 typename elfcpp::Elf_types<size>::Elf_Addr addend,
750 typename elfcpp::Elf_types<size>::Elf_Addr address)
751 {
752 This::template pcrela_unaligned<16>(view, object, psymval,
753 addend, address);
754 }
755
756 // R_SPARC_DISP32: (Symbol + Addend - Address)
757 static inline void
758 disp32(unsigned char* view,
759 const Sized_relobj<size, big_endian>* object,
760 const Symbol_value<size>* psymval,
761 typename elfcpp::Elf_types<size>::Elf_Addr addend,
762 typename elfcpp::Elf_types<size>::Elf_Addr address)
763 {
764 This::template pcrela_unaligned<32>(view, object, psymval,
765 addend, address);
766 }
767
768 // R_SPARC_DISP64: (Symbol + Addend - Address)
769 static inline void
770 disp64(unsigned char* view,
771 const Sized_relobj<size, big_endian>* object,
772 const Symbol_value<size>* psymval,
773 elfcpp::Elf_Xword addend,
774 typename elfcpp::Elf_types<size>::Elf_Addr address)
775 {
776 This::template pcrela_unaligned<64>(view, object, psymval,
777 addend, address);
778 }
779
780 // R_SPARC_H44: (Symbol + Addend) >> 22
781 static inline void
782 h44(unsigned char* view,
783 const Sized_relobj<size, big_endian>* object,
784 const Symbol_value<size>* psymval,
785 typename elfcpp::Elf_types<size>::Elf_Addr addend)
786 {
787 This_insn::template rela<32>(view, 22, 0x003fffff, object, psymval, addend);
788 }
789
790 // R_SPARC_M44: ((Symbol + Addend) >> 12) & 0x3ff
791 static inline void
792 m44(unsigned char* view,
793 const Sized_relobj<size, big_endian>* object,
794 const Symbol_value<size>* psymval,
795 typename elfcpp::Elf_types<size>::Elf_Addr addend)
796 {
797 This_insn::template rela<32>(view, 12, 0x000003ff, object, psymval, addend);
798 }
799
800 // R_SPARC_L44: (Symbol + Addend) & 0xfff
801 static inline void
802 l44(unsigned char* view,
803 const Sized_relobj<size, big_endian>* object,
804 const Symbol_value<size>* psymval,
805 typename elfcpp::Elf_types<size>::Elf_Addr addend)
806 {
807 This_insn::template rela<32>(view, 0, 0x00000fff, object, psymval, addend);
808 }
809
810 // R_SPARC_HH22: (Symbol + Addend) >> 42
811 static inline void
812 hh22(unsigned char* view,
813 const Sized_relobj<size, big_endian>* object,
814 const Symbol_value<size>* psymval,
815 typename elfcpp::Elf_types<size>::Elf_Addr addend)
816 {
817 This_insn::template rela<32>(view, 42, 0x003fffff, object, psymval, addend);
818 }
819
820 // R_SPARC_PC_HH22: (Symbol + Addend - Address) >> 42
821 static inline void
822 pc_hh22(unsigned char* view,
823 const Sized_relobj<size, big_endian>* object,
824 const Symbol_value<size>* psymval,
825 typename elfcpp::Elf_types<size>::Elf_Addr addend,
826 typename elfcpp::Elf_types<size>::Elf_Addr address)
827 {
828 This_insn::template pcrela<32>(view, 42, 0x003fffff, object,
829 psymval, addend, address);
830 }
831
832 // R_SPARC_HM10: ((Symbol + Addend) >> 32) & 0x3ff
833 static inline void
834 hm10(unsigned char* view,
835 const Sized_relobj<size, big_endian>* object,
836 const Symbol_value<size>* psymval,
837 typename elfcpp::Elf_types<size>::Elf_Addr addend)
838 {
839 This_insn::template rela<32>(view, 32, 0x000003ff, object, psymval, addend);
840 }
841
842 // R_SPARC_PC_HM10: ((Symbol + Addend - Address) >> 32) & 0x3ff
843 static inline void
844 pc_hm10(unsigned char* view,
845 const Sized_relobj<size, big_endian>* object,
846 const Symbol_value<size>* psymval,
847 typename elfcpp::Elf_types<size>::Elf_Addr addend,
848 typename elfcpp::Elf_types<size>::Elf_Addr address)
849 {
850 This_insn::template pcrela<32>(view, 32, 0x000003ff, object,
851 psymval, addend, address);
852 }
853
854 // R_SPARC_11: (Symbol + Addend)
855 static inline void
856 rela32_11(unsigned char* view,
857 const Sized_relobj<size, big_endian>* object,
858 const Symbol_value<size>* psymval,
859 typename elfcpp::Elf_types<size>::Elf_Addr addend)
860 {
861 This_insn::template rela<32>(view, 0, 0x000007ff, object, psymval, addend);
862 }
863
864 // R_SPARC_10: (Symbol + Addend)
865 static inline void
866 rela32_10(unsigned char* view,
867 const Sized_relobj<size, big_endian>* object,
868 const Symbol_value<size>* psymval,
869 typename elfcpp::Elf_types<size>::Elf_Addr addend)
870 {
871 This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend);
872 }
873
874 // R_SPARC_7: (Symbol + Addend)
875 static inline void
876 rela32_7(unsigned char* view,
877 const Sized_relobj<size, big_endian>* object,
878 const Symbol_value<size>* psymval,
879 typename elfcpp::Elf_types<size>::Elf_Addr addend)
880 {
881 This_insn::template rela<32>(view, 0, 0x0000007f, object, psymval, addend);
882 }
883
884 // R_SPARC_6: (Symbol + Addend)
885 static inline void
886 rela32_6(unsigned char* view,
887 const Sized_relobj<size, big_endian>* object,
888 const Symbol_value<size>* psymval,
889 typename elfcpp::Elf_types<size>::Elf_Addr addend)
890 {
891 This_insn::template rela<32>(view, 0, 0x0000003f, object, psymval, addend);
892 }
893
894 // R_SPARC_5: (Symbol + Addend)
895 static inline void
896 rela32_5(unsigned char* view,
897 const Sized_relobj<size, big_endian>* object,
898 const Symbol_value<size>* psymval,
899 typename elfcpp::Elf_types<size>::Elf_Addr addend)
900 {
901 This_insn::template rela<32>(view, 0, 0x0000001f, object, psymval, addend);
902 }
903
904 // R_SPARC_TLS_LDO_HIX22: @dtpoff(Symbol + Addend) >> 10
905 static inline void
906 ldo_hix22(unsigned char* view,
2ea97941 907 typename elfcpp::Elf_types<size>::Elf_Addr value,
f5314dd5
DM		 908 typename elfcpp::Elf_types<size>::Elf_Addr addend)
909 {
2ea97941 910 This_insn::hi22(view, value, addend);
f5314dd5
DM		 911 }
912
913 // R_SPARC_TLS_LDO_LOX10: @dtpoff(Symbol + Addend) & 0x3ff
914 static inline void
915 ldo_lox10(unsigned char* view,
2ea97941 916 typename elfcpp::Elf_types<size>::Elf_Addr value,
f5314dd5
DM		 917 typename elfcpp::Elf_types<size>::Elf_Addr addend)
918 {
919 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
920 Valtype* wv = reinterpret_cast<Valtype*>(view);
921 Valtype val = elfcpp::Swap<32, true>::readval(wv);
2ea97941 922 Valtype reloc = (value + addend);
f5314dd5
DM		 923
924 val &= ~0x1fff;
925 reloc &= 0x3ff;
926
927 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
928 }
929
930 // R_SPARC_TLS_LE_HIX22: (@tpoff(Symbol + Addend) ^ 0xffffffffffffffff) >> 10
931 static inline void
932 hix22(unsigned char* view,
2ea97941 933 typename elfcpp::Elf_types<size>::Elf_Addr value,
f5314dd5
DM		 934 typename elfcpp::Elf_types<size>::Elf_Addr addend)
935 {
936 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
937 Valtype* wv = reinterpret_cast<Valtype*>(view);
938 Valtype val = elfcpp::Swap<32, true>::readval(wv);
2ea97941 939 Valtype reloc = (value + addend);
f5314dd5
DM		 940
941 val &= ~0x3fffff;
942
943 reloc ^= ~(Valtype)0;
944 reloc >>= 10;
945
946 reloc &= 0x3fffff;
947
948 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
949 }
950
951 // R_SPARC_HIX22: ((Symbol + Addend) ^ 0xffffffffffffffff) >> 10
952 static inline void
953 hix22(unsigned char* view,
954 const Sized_relobj<size, big_endian>* object,
955 const Symbol_value<size>* psymval,
956 typename elfcpp::Elf_types<size>::Elf_Addr addend)
957 {
958 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
959 Valtype* wv = reinterpret_cast<Valtype*>(view);
960 Valtype val = elfcpp::Swap<32, true>::readval(wv);
961 Valtype reloc = psymval->value(object, addend);
962
963 val &= ~0x3fffff;
964
965 reloc ^= ~(Valtype)0;
966 reloc >>= 10;
967
968 reloc &= 0x3fffff;
969
970 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
971 }
972
973
974 // R_SPARC_TLS_LE_LOX10: (@tpoff(Symbol + Addend) & 0x3ff) | 0x1c00
975 static inline void
976 lox10(unsigned char* view,
2ea97941 977 typename elfcpp::Elf_types<size>::Elf_Addr value,
f5314dd5
DM		 978 typename elfcpp::Elf_types<size>::Elf_Addr addend)
979 {
980 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
981 Valtype* wv = reinterpret_cast<Valtype*>(view);
982 Valtype val = elfcpp::Swap<32, true>::readval(wv);
2ea97941 983 Valtype reloc = (value + addend);
f5314dd5
DM		 984
985 val &= ~0x1fff;
986 reloc &= 0x3ff;
987 reloc |= 0x1c00;
988
989 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
990 }
991
992 // R_SPARC_LOX10: ((Symbol + Addend) & 0x3ff) | 0x1c00
993 static inline void
994 lox10(unsigned char* view,
995 const Sized_relobj<size, big_endian>* object,
996 const Symbol_value<size>* psymval,
997 typename elfcpp::Elf_types<size>::Elf_Addr addend)
998 {
999 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
1000 Valtype* wv = reinterpret_cast<Valtype*>(view);
1001 Valtype val = elfcpp::Swap<32, true>::readval(wv);
1002 Valtype reloc = psymval->value(object, addend);
1003
1004 val &= ~0x1fff;
1005 reloc &= 0x3ff;
1006 reloc |= 0x1c00;
1007
1008 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
1009 }
1010};
1011
1012// Get the GOT section, creating it if necessary.
1013
1014template<int size, bool big_endian>
1015Output_data_got<size, big_endian>*
1016Target_sparc<size, big_endian>::got_section(Symbol_table* symtab,
1017 Layout* layout)
1018{
1019 if (this->got_ == NULL)
1020 {
1021 gold_assert(symtab != NULL && layout != NULL);
1022
1023 this->got_ = new Output_data_got<size, big_endian>();
1024
9f1d377b
ILT		 1025 Output_section* os;
1026 os = layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS,
1027 (elfcpp::SHF_ALLOC
1028 | elfcpp::SHF_WRITE),
1a2dff53
ILT		 1029 this->got_, false, true, false,
1030 false);
f5314dd5
DM		 1031
1032 // Define _GLOBAL_OFFSET_TABLE_ at the start of the .got section.
1033 symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL,
99fff23b 1034 Symbol_table::PREDEFINED,
f5314dd5
DM		 1035 this->got_,
1036 0, 0, elfcpp::STT_OBJECT,
1037 elfcpp::STB_LOCAL,
1038 elfcpp::STV_HIDDEN, 0,
1039 false, false);
1040 }
1041
1042 return this->got_;
1043}
1044
1045// Get the dynamic reloc section, creating it if necessary.
1046
1047template<int size, bool big_endian>
1048typename Target_sparc<size, big_endian>::Reloc_section*
1049Target_sparc<size, big_endian>::rela_dyn_section(Layout* layout)
1050{
1051 if (this->rela_dyn_ == NULL)
1052 {
1053 gold_assert(layout != NULL);
d98bc257 1054 this->rela_dyn_ = new Reloc_section(parameters->options().combreloc());
f5314dd5 1055 layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA,
1a2dff53
ILT		 1056 elfcpp::SHF_ALLOC, this->rela_dyn_, true,
1057 false, false, false);
f5314dd5
DM		 1058 }
1059 return this->rela_dyn_;
1060}
1061
1062// A class to handle the PLT data.
1063
1064template<int size, bool big_endian>
1065class Output_data_plt_sparc : public Output_section_data
1066{
1067 public:
1068 typedef Output_data_reloc<elfcpp::SHT_RELA, true,
1069 size, big_endian> Reloc_section;
1070
1071 Output_data_plt_sparc(Layout*);
1072
1073 // Add an entry to the PLT.
1074 void add_entry(Symbol* gsym);
1075
1076 // Return the .rela.plt section data.
1077 const Reloc_section* rel_plt() const
1078 {
1079 return this->rel_;
1080 }
1081
1082 protected:
1083 void do_adjust_output_section(Output_section* os);
1084
7d9e3d98
ILT		 1085 // Write to a map file.
1086 void
1087 do_print_to_mapfile(Mapfile* mapfile) const
1088 { mapfile->print_output_data(this, _("** PLT")); }
1089
f5314dd5
DM		 1090 private:
1091 // The size of an entry in the PLT.
1092 static const int base_plt_entry_size = (size == 32 ? 12 : 32);
1093
1094 static const unsigned int plt_entries_per_block = 160;
1095 static const unsigned int plt_insn_chunk_size = 24;
1096 static const unsigned int plt_pointer_chunk_size = 8;
1097 static const unsigned int plt_block_size =
1098 (plt_entries_per_block
1099 * (plt_insn_chunk_size + plt_pointer_chunk_size));
1100
1101 // Set the final size.
1102 void
1103 set_final_data_size()
1104 {
1105 unsigned int full_count = this->count_ + 4;
1106 unsigned int extra = (size == 32 ? 4 : 0);
1107
1108 if (size == 32 || full_count < 32768)
1109 this->set_data_size((full_count * base_plt_entry_size) + extra);
1110 else
1111 {
1112 unsigned int ext_cnt = full_count - 32768;
1113
1114 this->set_data_size((32768 * base_plt_entry_size)
1115 + (ext_cnt
1116 * (plt_insn_chunk_size
1117 + plt_pointer_chunk_size)));
1118 }
1119 }
1120
1121 // Write out the PLT data.
1122 void
1123 do_write(Output_file*);
1124
1125 // The reloc section.
1126 Reloc_section* rel_;
1127 // The number of PLT entries.
1128 unsigned int count_;
1129};
1130
4f2a9edd
ILT		 1131// Define the constants as required by C++ standard.
1132
1133template<int size, bool big_endian>
1134const int Output_data_plt_sparc<size, big_endian>::base_plt_entry_size;
1135
1136template<int size, bool big_endian>
1137const unsigned int
1138Output_data_plt_sparc<size, big_endian>::plt_entries_per_block;
1139
1140template<int size, bool big_endian>
1141const unsigned int Output_data_plt_sparc<size, big_endian>::plt_insn_chunk_size;
1142
1143template<int size, bool big_endian>
1144const unsigned int
1145Output_data_plt_sparc<size, big_endian>::plt_pointer_chunk_size;
1146
1147template<int size, bool big_endian>
1148const unsigned int Output_data_plt_sparc<size, big_endian>::plt_block_size;
1149
f5314dd5
DM		 1150// Create the PLT section. The ordinary .got section is an argument,
1151// since we need to refer to the start.
1152
1153template<int size, bool big_endian>
1154Output_data_plt_sparc<size, big_endian>::Output_data_plt_sparc(Layout* layout)
1155 : Output_section_data(size == 32 ? 4 : 8), count_(0)
1156{
d98bc257 1157 this->rel_ = new Reloc_section(false);
f5314dd5 1158 layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA,
1a2dff53
ILT		 1159 elfcpp::SHF_ALLOC, this->rel_, true,
1160 false, false, false);
f5314dd5
DM		 1161}
1162
1163template<int size, bool big_endian>
1164void
1165Output_data_plt_sparc<size, big_endian>::do_adjust_output_section(Output_section* os)
1166{
1167 os->set_entsize(0);
1168}
1169
1170// Add an entry to the PLT.
1171
1172template<int size, bool big_endian>
1173void
1174Output_data_plt_sparc<size, big_endian>::add_entry(Symbol* gsym)
1175{
1176 gold_assert(!gsym->has_plt_offset());
1177
1178 unsigned int index = this->count_ + 4;
1179 section_offset_type plt_offset;
1180
1181 if (size == 32 || index < 32768)
1182 plt_offset = index * base_plt_entry_size;
1183 else
1184 {
1185 unsigned int ext_index = index - 32768;
1186
1187 plt_offset = (32768 * base_plt_entry_size)
1188 + ((ext_index / plt_entries_per_block)
1189 * plt_block_size)
1190 + ((ext_index % plt_entries_per_block)
1191 * plt_insn_chunk_size);
1192 }
1193
1194 gsym->set_plt_offset(plt_offset);
1195
1196 ++this->count_;
1197
1198 // Every PLT entry needs a reloc.
1199 gsym->set_needs_dynsym_entry();
1200 this->rel_->add_global(gsym, elfcpp::R_SPARC_JMP_SLOT, this,
1201 plt_offset, 0);
1202
1203 // Note that we don't need to save the symbol. The contents of the
1204 // PLT are independent of which symbols are used. The symbols only
1205 // appear in the relocations.
1206}
1207
1208static const unsigned int sparc_nop = 0x01000000;
1209static const unsigned int sparc_sethi_g1 = 0x03000000;
1210static const unsigned int sparc_branch_always = 0x30800000;
1211static const unsigned int sparc_branch_always_pt = 0x30680000;
1212static const unsigned int sparc_mov = 0x80100000;
1213static const unsigned int sparc_mov_g0_o0 = 0x90100000;
1214static const unsigned int sparc_mov_o7_g5 = 0x8a10000f;
1215static const unsigned int sparc_call_plus_8 = 0x40000002;
1216static const unsigned int sparc_ldx_o7_imm_g1 = 0xc25be000;
1217static const unsigned int sparc_jmpl_o7_g1_g1 = 0x83c3c001;
1218static const unsigned int sparc_mov_g5_o7 = 0x9e100005;
1219
1220// Write out the PLT.
1221
1222template<int size, bool big_endian>
1223void
1224Output_data_plt_sparc<size, big_endian>::do_write(Output_file* of)
1225{
2ea97941 1226 const off_t offset = this->offset();
f5314dd5
DM		 1227 const section_size_type oview_size =
1228 convert_to_section_size_type(this->data_size());
2ea97941 1229 unsigned char* const oview = of->get_output_view(offset, oview_size);
f5314dd5
DM		 1230 unsigned char* pov = oview;
1231
1232 memset(pov, 0, base_plt_entry_size * 4);
1233 pov += base_plt_entry_size * 4;
1234
1235 unsigned int plt_offset = base_plt_entry_size * 4;
1236 const unsigned int count = this->count_;
1237
1238 if (size == 64)
1239 {
1240 unsigned int limit;
1241
1242 limit = (count > 32768 ? 32768 : count);
1243
1244 for (unsigned int i = 0; i < limit; ++i)
1245 {
1246 elfcpp::Swap<32, true>::writeval(pov + 0x00,
1247 sparc_sethi_g1 + plt_offset);
1248 elfcpp::Swap<32, true>::writeval(pov + 0x04,
1249 sparc_branch_always_pt +
1250 (((base_plt_entry_size -
1251 (plt_offset + 4)) >> 2) &
1252 0x7ffff));
1253 elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop);
1254 elfcpp::Swap<32, true>::writeval(pov + 0x0c, sparc_nop);
1255 elfcpp::Swap<32, true>::writeval(pov + 0x10, sparc_nop);
1256 elfcpp::Swap<32, true>::writeval(pov + 0x14, sparc_nop);
1257 elfcpp::Swap<32, true>::writeval(pov + 0x18, sparc_nop);
1258 elfcpp::Swap<32, true>::writeval(pov + 0x1c, sparc_nop);
1259
1260 pov += base_plt_entry_size;
1261 plt_offset += base_plt_entry_size;
1262 }
1263
1264 if (count > 32768)
1265 {
1266 unsigned int ext_cnt = count - 32768;
1267 unsigned int blks = ext_cnt / plt_entries_per_block;
1268
1269 for (unsigned int i = 0; i < blks; ++i)
1270 {
1271 unsigned int data_off = (plt_entries_per_block
1272 * plt_insn_chunk_size) - 4;
1273
1274 for (unsigned int j = 0; j < plt_entries_per_block; ++j)
1275 {
1276 elfcpp::Swap<32, true>::writeval(pov + 0x00,
1277 sparc_mov_o7_g5);
1278 elfcpp::Swap<32, true>::writeval(pov + 0x04,
1279 sparc_call_plus_8);
1280 elfcpp::Swap<32, true>::writeval(pov + 0x08,
1281 sparc_nop);
1282 elfcpp::Swap<32, true>::writeval(pov + 0x0c,
1283 sparc_ldx_o7_imm_g1 +
1284 (data_off & 0x1fff));
1285 elfcpp::Swap<32, true>::writeval(pov + 0x10,
1286 sparc_jmpl_o7_g1_g1);
1287 elfcpp::Swap<32, true>::writeval(pov + 0x14,
1288 sparc_mov_g5_o7);
1289
1290 elfcpp::Swap<64, big_endian>::writeval(
1291 pov + 0x4 + data_off,
1292 (elfcpp::Elf_Xword) (oview - (pov + 0x04)));
1293
1294 pov += plt_insn_chunk_size;
1295 data_off -= 16;
1296 }
1297 }
1298
1299 unsigned int sub_blk_cnt = ext_cnt % plt_entries_per_block;
1300 for (unsigned int i = 0; i < sub_blk_cnt; ++i)
1301 {
1302 unsigned int data_off = (sub_blk_cnt
1303 * plt_insn_chunk_size) - 4;
1304
1305 for (unsigned int j = 0; j < plt_entries_per_block; ++j)
1306 {
1307 elfcpp::Swap<32, true>::writeval(pov + 0x00,
1308 sparc_mov_o7_g5);
1309 elfcpp::Swap<32, true>::writeval(pov + 0x04,
1310 sparc_call_plus_8);
1311 elfcpp::Swap<32, true>::writeval(pov + 0x08,
1312 sparc_nop);
1313 elfcpp::Swap<32, true>::writeval(pov + 0x0c,
1314 sparc_ldx_o7_imm_g1 +
1315 (data_off & 0x1fff));
1316 elfcpp::Swap<32, true>::writeval(pov + 0x10,
1317 sparc_jmpl_o7_g1_g1);
1318 elfcpp::Swap<32, true>::writeval(pov + 0x14,
1319 sparc_mov_g5_o7);
1320
1321 elfcpp::Swap<64, big_endian>::writeval(
1322 pov + 0x4 + data_off,
1323 (elfcpp::Elf_Xword) (oview - (pov + 0x04)));
1324
1325 pov += plt_insn_chunk_size;
1326 data_off -= 16;
1327 }
1328 }
1329 }
1330 }
1331 else
1332 {
1333 for (unsigned int i = 0; i < count; ++i)
1334 {
1335 elfcpp::Swap<32, true>::writeval(pov + 0x00,
1336 sparc_sethi_g1 + plt_offset);
1337 elfcpp::Swap<32, true>::writeval(pov + 0x04,
1338 sparc_branch_always +
1339 (((- (plt_offset + 4)) >> 2) &
1340 0x003fffff));
1341 elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop);
1342
1343 pov += base_plt_entry_size;
1344 plt_offset += base_plt_entry_size;
1345 }
1346
1347 elfcpp::Swap<32, true>::writeval(pov, sparc_nop);
1348 pov += 4;
1349 }
1350
1351 gold_assert(static_cast<section_size_type>(pov - oview) == oview_size);
1352
2ea97941 1353 of->write_output_view(offset, oview_size, oview);
f5314dd5
DM		 1354}
1355
1356// Create a PLT entry for a global symbol.
1357
1358template<int size, bool big_endian>
1359void
1360Target_sparc<size, big_endian>::make_plt_entry(Symbol_table* symtab,
1361 Layout* layout,
1362 Symbol* gsym)
1363{
1364 if (gsym->has_plt_offset())
1365 return;
1366
1367 if (this->plt_ == NULL)
1368 {
1369 // Create the GOT sections first.
1370 this->got_section(symtab, layout);
1371
1372 this->plt_ = new Output_data_plt_sparc<size, big_endian>(layout);
1373 layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS,
1374 (elfcpp::SHF_ALLOC
1375 | elfcpp::SHF_EXECINSTR
1376 | elfcpp::SHF_WRITE),
1a2dff53 1377 this->plt_, false, false, false, false);
f5314dd5
DM		 1378
1379 // Define _PROCEDURE_LINKAGE_TABLE_ at the start of the .plt section.
1380 symtab->define_in_output_data("_PROCEDURE_LINKAGE_TABLE_", NULL,
99fff23b 1381 Symbol_table::PREDEFINED,
f5314dd5
DM		 1382 this->plt_,
1383 0, 0, elfcpp::STT_OBJECT,
1384 elfcpp::STB_LOCAL,
1385 elfcpp::STV_HIDDEN, 0,
1386 false, false);
1387 }
1388
1389 this->plt_->add_entry(gsym);
1390}
1391
1392// Create a GOT entry for the TLS module index.
1393
1394template<int size, bool big_endian>
1395unsigned int
1396Target_sparc<size, big_endian>::got_mod_index_entry(Symbol_table* symtab,
1397 Layout* layout,
1398 Sized_relobj<size, big_endian>* object)
1399{
1400 if (this->got_mod_index_offset_ == -1U)
1401 {
1402 gold_assert(symtab != NULL && layout != NULL && object != NULL);
1403 Reloc_section* rela_dyn = this->rela_dyn_section(layout);
1404 Output_data_got<size, big_endian>* got;
1405 unsigned int got_offset;
1406
1407 got = this->got_section(symtab, layout);
1408 got_offset = got->add_constant(0);
1409 rela_dyn->add_local(object, 0,
1410 (size == 64 ?
1411 elfcpp::R_SPARC_TLS_DTPMOD64 :
1412 elfcpp::R_SPARC_TLS_DTPMOD32), got,
1413 got_offset, 0);
1414 got->add_constant(0);
1415 this->got_mod_index_offset_ = got_offset;
1416 }
1417 return this->got_mod_index_offset_;
1418}
1419
f5314dd5
DM		 1420// Optimize the TLS relocation type based on what we know about the
1421// symbol. IS_FINAL is true if the final address of this symbol is
1422// known at link time.
1423
1424static tls::Tls_optimization
1425optimize_tls_reloc(bool is_final, int r_type)
1426{
1427 // If we are generating a shared library, then we can't do anything
1428 // in the linker.
1429 if (parameters->options().shared())
1430 return tls::TLSOPT_NONE;
1431
1432 switch (r_type)
1433 {
1434 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1435 case elfcpp::R_SPARC_TLS_GD_LO10:
1436 case elfcpp::R_SPARC_TLS_GD_ADD:
1437 case elfcpp::R_SPARC_TLS_GD_CALL:
1438 // These are General-Dynamic which permits fully general TLS
1439 // access. Since we know that we are generating an executable,
1440 // we can convert this to Initial-Exec. If we also know that
1441 // this is a local symbol, we can further switch to Local-Exec.
1442 if (is_final)
1443 return tls::TLSOPT_TO_LE;
1444 return tls::TLSOPT_TO_IE;
1445
1446 case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic
1447 case elfcpp::R_SPARC_TLS_LDM_LO10:
1448 case elfcpp::R_SPARC_TLS_LDM_ADD:
1449 case elfcpp::R_SPARC_TLS_LDM_CALL:
1450 // This is Local-Dynamic, which refers to a local symbol in the
1451 // dynamic TLS block. Since we know that we generating an
1452 // executable, we can switch to Local-Exec.
1453 return tls::TLSOPT_TO_LE;
1454
1455 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
1456 case elfcpp::R_SPARC_TLS_LDO_LOX10:
1457 case elfcpp::R_SPARC_TLS_LDO_ADD:
1458 // Another type of Local-Dynamic relocation.
1459 return tls::TLSOPT_TO_LE;
1460
1461 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
1462 case elfcpp::R_SPARC_TLS_IE_LO10:
1463 case elfcpp::R_SPARC_TLS_IE_LD:
1464 case elfcpp::R_SPARC_TLS_IE_LDX:
9efe6174 1465 case elfcpp::R_SPARC_TLS_IE_ADD:
f5314dd5
DM		 1466 // These are Initial-Exec relocs which get the thread offset
1467 // from the GOT. If we know that we are linking against the
1468 // local symbol, we can switch to Local-Exec, which links the
1469 // thread offset into the instruction.
1470 if (is_final)
1471 return tls::TLSOPT_TO_LE;
1472 return tls::TLSOPT_NONE;
1473
1474 case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec
1475 case elfcpp::R_SPARC_TLS_LE_LOX10:
1476 // When we already have Local-Exec, there is nothing further we
1477 // can do.
1478 return tls::TLSOPT_NONE;
1479
1480 default:
1481 gold_unreachable();
1482 }
1483}
1484
1485// Generate a PLT entry slot for a call to __tls_get_addr
1486template<int size, bool big_endian>
1487void
1488Target_sparc<size, big_endian>::Scan::generate_tls_call(Symbol_table* symtab,
1489 Layout* layout,
1490 Target_sparc<size, big_endian>* target)
1491{
1492 Symbol* gsym = target->tls_get_addr_sym(symtab);
1493
1494 target->make_plt_entry(symtab, layout, gsym);
1495}
1496
1497// Report an unsupported relocation against a local symbol.
1498
1499template<int size, bool big_endian>
1500void
1501Target_sparc<size, big_endian>::Scan::unsupported_reloc_local(
1502 Sized_relobj<size, big_endian>* object,
1503 unsigned int r_type)
1504{
1505 gold_error(_("%s: unsupported reloc %u against local symbol"),
1506 object->name().c_str(), r_type);
1507}
1508
32b769e1
DM		 1509// We are about to emit a dynamic relocation of type R_TYPE. If the
1510// dynamic linker does not support it, issue an error.
1511
1512template<int size, bool big_endian>
1513void
1514Target_sparc<size, big_endian>::Scan::check_non_pic(Relobj* object, unsigned int r_type)
1515{
1516 gold_assert(r_type != elfcpp::R_SPARC_NONE);
1517
1518 if (size == 64)
1519 {
1520 switch (r_type)
1521 {
1522 // These are the relocation types supported by glibc for sparc 64-bit.
1523 case elfcpp::R_SPARC_RELATIVE:
1524 case elfcpp::R_SPARC_COPY:
1525 case elfcpp::R_SPARC_64:
1526 case elfcpp::R_SPARC_GLOB_DAT:
1527 case elfcpp::R_SPARC_JMP_SLOT:
1528 case elfcpp::R_SPARC_TLS_DTPMOD64:
1529 case elfcpp::R_SPARC_TLS_DTPOFF64:
1530 case elfcpp::R_SPARC_TLS_TPOFF64:
1531 case elfcpp::R_SPARC_TLS_LE_HIX22:
1532 case elfcpp::R_SPARC_TLS_LE_LOX10:
1533 case elfcpp::R_SPARC_8:
1534 case elfcpp::R_SPARC_16:
1535 case elfcpp::R_SPARC_DISP8:
1536 case elfcpp::R_SPARC_DISP16:
1537 case elfcpp::R_SPARC_DISP32:
1538 case elfcpp::R_SPARC_WDISP30:
1539 case elfcpp::R_SPARC_LO10:
1540 case elfcpp::R_SPARC_HI22:
1541 case elfcpp::R_SPARC_OLO10:
1542 case elfcpp::R_SPARC_H44:
1543 case elfcpp::R_SPARC_M44:
1544 case elfcpp::R_SPARC_L44:
1545 case elfcpp::R_SPARC_HH22:
1546 case elfcpp::R_SPARC_HM10:
1547 case elfcpp::R_SPARC_LM22:
1548 case elfcpp::R_SPARC_UA16:
1549 case elfcpp::R_SPARC_UA32:
1550 case elfcpp::R_SPARC_UA64:
1551 return;
1552
1553 default:
1554 break;
1555 }
1556 }
1557 else
1558 {
1559 switch (r_type)
1560 {
1561 // These are the relocation types supported by glibc for sparc 32-bit.
1562 case elfcpp::R_SPARC_RELATIVE:
1563 case elfcpp::R_SPARC_COPY:
1564 case elfcpp::R_SPARC_GLOB_DAT:
1565 case elfcpp::R_SPARC_32:
1566 case elfcpp::R_SPARC_JMP_SLOT:
1567 case elfcpp::R_SPARC_TLS_DTPMOD32:
1568 case elfcpp::R_SPARC_TLS_DTPOFF32:
1569 case elfcpp::R_SPARC_TLS_TPOFF32:
1570 case elfcpp::R_SPARC_TLS_LE_HIX22:
1571 case elfcpp::R_SPARC_TLS_LE_LOX10:
1572 case elfcpp::R_SPARC_8:
1573 case elfcpp::R_SPARC_16:
1574 case elfcpp::R_SPARC_DISP8:
1575 case elfcpp::R_SPARC_DISP16:
1576 case elfcpp::R_SPARC_DISP32:
1577 case elfcpp::R_SPARC_LO10:
1578 case elfcpp::R_SPARC_WDISP30:
1579 case elfcpp::R_SPARC_HI22:
1580 case elfcpp::R_SPARC_UA16:
1581 case elfcpp::R_SPARC_UA32:
1582 return;
1583
1584 default:
1585 break;
1586 }
1587 }
1588
1589 // This prevents us from issuing more than one error per reloc
1590 // section. But we can still wind up issuing more than one
1591 // error per object file.
1592 if (this->issued_non_pic_error_)
1593 return;
33aea2fd 1594 gold_assert(parameters->options().output_is_position_independent());
32b769e1
DM		 1595 object->error(_("requires unsupported dynamic reloc; "
1596 "recompile with -fPIC"));
1597 this->issued_non_pic_error_ = true;
1598 return;
1599}
1600
f5314dd5
DM		 1601// Scan a relocation for a local symbol.
1602
1603template<int size, bool big_endian>
1604inline void
1605Target_sparc<size, big_endian>::Scan::local(
f5314dd5
DM		 1606 Symbol_table* symtab,
1607 Layout* layout,
1608 Target_sparc<size, big_endian>* target,
1609 Sized_relobj<size, big_endian>* object,
1610 unsigned int data_shndx,
1611 Output_section* output_section,
1612 const elfcpp::Rela<size, big_endian>& reloc,
1613 unsigned int r_type,
1614 const elfcpp::Sym<size, big_endian>& lsym)
1615{
1616 unsigned int orig_r_type = r_type;
1617
1618 r_type &= 0xff;
1619 switch (r_type)
1620 {
1621 case elfcpp::R_SPARC_NONE:
1622 case elfcpp::R_SPARC_REGISTER:
1623 case elfcpp::R_SPARC_GNU_VTINHERIT:
1624 case elfcpp::R_SPARC_GNU_VTENTRY:
1625 break;
1626
1627 case elfcpp::R_SPARC_64:
1628 case elfcpp::R_SPARC_32:
1629 // If building a shared library (or a position-independent
1630 // executable), we need to create a dynamic relocation for
1631 // this location. The relocation applied at link time will
1632 // apply the link-time value, so we flag the location with
1633 // an R_SPARC_RELATIVE relocation so the dynamic loader can
1634 // relocate it easily.
1635 if (parameters->options().output_is_position_independent())
1636 {
1637 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1638 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1639 rela_dyn->add_local_relative(object, r_sym, elfcpp::R_SPARC_RELATIVE,
1640 output_section, data_shndx,
1641 reloc.get_r_offset(),
1642 reloc.get_r_addend());
1643 }
1644 break;
1645
1646 case elfcpp::R_SPARC_HIX22:
1647 case elfcpp::R_SPARC_LOX10:
1648 case elfcpp::R_SPARC_H44:
1649 case elfcpp::R_SPARC_M44:
1650 case elfcpp::R_SPARC_L44:
1651 case elfcpp::R_SPARC_HH22:
1652 case elfcpp::R_SPARC_HM10:
1653 case elfcpp::R_SPARC_LM22:
1654 case elfcpp::R_SPARC_UA64:
1655 case elfcpp::R_SPARC_UA32:
1656 case elfcpp::R_SPARC_UA16:
1657 case elfcpp::R_SPARC_HI22:
1658 case elfcpp::R_SPARC_LO10:
1659 case elfcpp::R_SPARC_OLO10:
1660 case elfcpp::R_SPARC_16:
1661 case elfcpp::R_SPARC_11:
1662 case elfcpp::R_SPARC_10:
1663 case elfcpp::R_SPARC_8:
1664 case elfcpp::R_SPARC_7:
1665 case elfcpp::R_SPARC_6:
1666 case elfcpp::R_SPARC_5:
1667 // If building a shared library (or a position-independent
1668 // executable), we need to create a dynamic relocation for
1669 // this location.
1670 if (parameters->options().output_is_position_independent())
1671 {
1672 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
32b769e1
DM		 1673
1674 check_non_pic(object, r_type);
f5314dd5
DM		 1675 if (lsym.get_st_type() != elfcpp::STT_SECTION)
1676 {
1677 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1678 rela_dyn->add_local(object, r_sym, orig_r_type, output_section,
1679 data_shndx, reloc.get_r_offset(),
1680 reloc.get_r_addend());
1681 }
1682 else
1683 {
1684 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1685 gold_assert(lsym.get_st_value() == 0);
1686 rela_dyn->add_local_relative(object, r_sym, orig_r_type,
1687 output_section, data_shndx,
1688 reloc.get_r_offset(),
1689 reloc.get_r_addend());
1690 }
1691 }
1692 break;
1693
1694 case elfcpp::R_SPARC_WDISP30:
1695 case elfcpp::R_SPARC_WDISP22:
1696 case elfcpp::R_SPARC_WDISP19:
1697 case elfcpp::R_SPARC_WDISP16:
1698 case elfcpp::R_SPARC_DISP8:
1699 case elfcpp::R_SPARC_DISP16:
1700 case elfcpp::R_SPARC_DISP32:
1701 case elfcpp::R_SPARC_DISP64:
1702 case elfcpp::R_SPARC_PC10:
1703 case elfcpp::R_SPARC_PC22:
1704 break;
1705
1706 case elfcpp::R_SPARC_GOT10:
1707 case elfcpp::R_SPARC_GOT13:
1708 case elfcpp::R_SPARC_GOT22:
1709 {
1710 // The symbol requires a GOT entry.
1711 Output_data_got<size, big_endian>* got;
1712 unsigned int r_sym;
1713
1714 got = target->got_section(symtab, layout);
1715 r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1716
1717 // If we are generating a shared object, we need to add a
1718 // dynamic relocation for this symbol's GOT entry.
1719 if (parameters->options().output_is_position_independent())
1720 {
1721 if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD))
1722 {
1723 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1724 unsigned int off;
1725
1726 off = got->add_constant(0);
1727 object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off);
1728 rela_dyn->add_local_relative(object, r_sym,
1729 elfcpp::R_SPARC_RELATIVE,
1730 got, off, 0);
1731 }
1732 }
1733 else
1734 got->add_local(object, r_sym, GOT_TYPE_STANDARD);
1735 }
1736 break;
1737
1738 // These are initial TLS relocs, which are expected when
1739 // linking.
1740 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1741 case elfcpp::R_SPARC_TLS_GD_LO10:
1742 case elfcpp::R_SPARC_TLS_GD_ADD:
1743 case elfcpp::R_SPARC_TLS_GD_CALL:
1744 case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic
1745 case elfcpp::R_SPARC_TLS_LDM_LO10:
1746 case elfcpp::R_SPARC_TLS_LDM_ADD:
1747 case elfcpp::R_SPARC_TLS_LDM_CALL:
1748 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
1749 case elfcpp::R_SPARC_TLS_LDO_LOX10:
1750 case elfcpp::R_SPARC_TLS_LDO_ADD:
1751 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
1752 case elfcpp::R_SPARC_TLS_IE_LO10:
1753 case elfcpp::R_SPARC_TLS_IE_LD:
1754 case elfcpp::R_SPARC_TLS_IE_LDX:
9efe6174 1755 case elfcpp::R_SPARC_TLS_IE_ADD:
f5314dd5
DM		 1756 case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec
1757 case elfcpp::R_SPARC_TLS_LE_LOX10:
1758 {
1759 bool output_is_shared = parameters->options().shared();
1760 const tls::Tls_optimization optimized_type
1761 = optimize_tls_reloc(!output_is_shared, r_type);
1762 switch (r_type)
1763 {
1764 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1765 case elfcpp::R_SPARC_TLS_GD_LO10:
1766 case elfcpp::R_SPARC_TLS_GD_ADD:
1767 case elfcpp::R_SPARC_TLS_GD_CALL:
1768 if (optimized_type == tls::TLSOPT_NONE)
1769 {
1770 // Create a pair of GOT entries for the module index and
1771 // dtv-relative offset.
1772 Output_data_got<size, big_endian>* got
1773 = target->got_section(symtab, layout);
1774 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
d491d34e
ILT		 1775 unsigned int shndx = lsym.get_st_shndx();
1776 bool is_ordinary;
1777 shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary);
1778 if (!is_ordinary)
1779 object->error(_("local symbol %u has bad shndx %u"),
1780 r_sym, shndx);
1781 else
1782 got->add_local_pair_with_rela(object, r_sym,
1783 lsym.get_st_shndx(),
1784 GOT_TYPE_TLS_PAIR,
1785 target->rela_dyn_section(layout),
1786 (size == 64
1787 ? elfcpp::R_SPARC_TLS_DTPMOD64
1788 : elfcpp::R_SPARC_TLS_DTPMOD32),
1789 0);
f5314dd5
DM		 1790 if (r_type == elfcpp::R_SPARC_TLS_GD_CALL)
1791 generate_tls_call(symtab, layout, target);
1792 }
1793 else if (optimized_type != tls::TLSOPT_TO_LE)
1794 unsupported_reloc_local(object, r_type);
1795 break;
1796
1797 case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic
1798 case elfcpp::R_SPARC_TLS_LDM_LO10:
1799 case elfcpp::R_SPARC_TLS_LDM_ADD:
1800 case elfcpp::R_SPARC_TLS_LDM_CALL:
1801 if (optimized_type == tls::TLSOPT_NONE)
1802 {
1803 // Create a GOT entry for the module index.
1804 target->got_mod_index_entry(symtab, layout, object);
1805
1806 if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL)
1807 generate_tls_call(symtab, layout, target);
1808 }
1809 else if (optimized_type != tls::TLSOPT_TO_LE)
1810 unsupported_reloc_local(object, r_type);
1811 break;
1812
1813 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
1814 case elfcpp::R_SPARC_TLS_LDO_LOX10:
1815 case elfcpp::R_SPARC_TLS_LDO_ADD:
1816 break;
1817
1818 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
1819 case elfcpp::R_SPARC_TLS_IE_LO10:
1820 case elfcpp::R_SPARC_TLS_IE_LD:
1821 case elfcpp::R_SPARC_TLS_IE_LDX:
9efe6174 1822 case elfcpp::R_SPARC_TLS_IE_ADD:
f5314dd5
DM		 1823 layout->set_has_static_tls();
1824 if (optimized_type == tls::TLSOPT_NONE)
1825 {
1826 // Create a GOT entry for the tp-relative offset.
1827 Output_data_got<size, big_endian>* got
1828 = target->got_section(symtab, layout);
1829 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1830
1831 if (!object->local_has_got_offset(r_sym, GOT_TYPE_TLS_OFFSET))
1832 {
1833 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1834 unsigned int off = got->add_constant(0);
1835
1836 object->set_local_got_offset(r_sym, GOT_TYPE_TLS_OFFSET,
1837 off);
1838 rela_dyn->add_local_relative(object, r_sym,
1839 (size == 64 ?
1840 elfcpp::R_SPARC_TLS_TPOFF64 :
1841 elfcpp::R_SPARC_TLS_TPOFF32),
1842 got, off, 0);
1843 }
1844 }
1845 else if (optimized_type != tls::TLSOPT_TO_LE)
1846 unsupported_reloc_local(object, r_type);
1847 break;
1848
1849 case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec
1850 case elfcpp::R_SPARC_TLS_LE_LOX10:
1851 layout->set_has_static_tls();
1852 if (output_is_shared)
1853 {
1854 // We need to create a dynamic relocation.
1855 gold_assert(lsym.get_st_type() != elfcpp::STT_SECTION);
1856 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1857 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1858 rela_dyn->add_local_relative(object, r_sym, r_type,
1859 output_section, data_shndx,
1860 reloc.get_r_offset(), 0);
1861 }
1862 break;
1863 }
1864 }
1865 break;
1866
1867 // These are relocations which should only be seen by the
1868 // dynamic linker, and should never be seen here.
1869 case elfcpp::R_SPARC_COPY:
1870 case elfcpp::R_SPARC_GLOB_DAT:
1871 case elfcpp::R_SPARC_JMP_SLOT:
1872 case elfcpp::R_SPARC_RELATIVE:
1873 case elfcpp::R_SPARC_TLS_DTPMOD64:
1874 case elfcpp::R_SPARC_TLS_DTPMOD32:
1875 case elfcpp::R_SPARC_TLS_DTPOFF64:
1876 case elfcpp::R_SPARC_TLS_DTPOFF32:
1877 case elfcpp::R_SPARC_TLS_TPOFF64:
1878 case elfcpp::R_SPARC_TLS_TPOFF32:
1879 gold_error(_("%s: unexpected reloc %u in object file"),
1880 object->name().c_str(), r_type);
1881 break;
1882
1883 default:
1884 unsupported_reloc_local(object, r_type);
1885 break;
1886 }
1887}
1888
1889// Report an unsupported relocation against a global symbol.
1890
1891template<int size, bool big_endian>
1892void
1893Target_sparc<size, big_endian>::Scan::unsupported_reloc_global(
1894 Sized_relobj<size, big_endian>* object,
1895 unsigned int r_type,
1896 Symbol* gsym)
1897{
1898 gold_error(_("%s: unsupported reloc %u against global symbol %s"),
1899 object->name().c_str(), r_type, gsym->demangled_name().c_str());
1900}
1901
1902// Scan a relocation for a global symbol.
1903
1904template<int size, bool big_endian>
1905inline void
1906Target_sparc<size, big_endian>::Scan::global(
f5314dd5
DM		 1907 Symbol_table* symtab,
1908 Layout* layout,
1909 Target_sparc<size, big_endian>* target,
1910 Sized_relobj<size, big_endian>* object,
1911 unsigned int data_shndx,
1912 Output_section* output_section,
1913 const elfcpp::Rela<size, big_endian>& reloc,
1914 unsigned int r_type,
1915 Symbol* gsym)
1916{
1917 unsigned int orig_r_type = r_type;
1918
9efe6174
ILT		 1919 // A reference to _GLOBAL_OFFSET_TABLE_ implies that we need a got
1920 // section. We check here to avoid creating a dynamic reloc against
1921 // _GLOBAL_OFFSET_TABLE_.
1922 if (!target->has_got_section()
1923 && strcmp(gsym->name(), "_GLOBAL_OFFSET_TABLE_") == 0)
1924 target->got_section(symtab, layout);
1925
f5314dd5
DM		 1926 r_type &= 0xff;
1927 switch (r_type)
1928 {
1929 case elfcpp::R_SPARC_NONE:
1930 case elfcpp::R_SPARC_REGISTER:
1931 case elfcpp::R_SPARC_GNU_VTINHERIT:
1932 case elfcpp::R_SPARC_GNU_VTENTRY:
1933 break;
1934
1935 case elfcpp::R_SPARC_PLT64:
1936 case elfcpp::R_SPARC_PLT32:
1937 case elfcpp::R_SPARC_HIPLT22:
1938 case elfcpp::R_SPARC_LOPLT10:
1939 case elfcpp::R_SPARC_PCPLT32:
1940 case elfcpp::R_SPARC_PCPLT22:
1941 case elfcpp::R_SPARC_PCPLT10:
1942 case elfcpp::R_SPARC_WPLT30:
1943 // If the symbol is fully resolved, this is just a PC32 reloc.
1944 // Otherwise we need a PLT entry.
1945 if (gsym->final_value_is_known())
1946 break;
1947 // If building a shared library, we can also skip the PLT entry
1948 // if the symbol is defined in the output file and is protected
1949 // or hidden.
1950 if (gsym->is_defined()
1951 && !gsym->is_from_dynobj()
1952 && !gsym->is_preemptible())
1953 break;
1954 target->make_plt_entry(symtab, layout, gsym);
1955 break;
1956
1957 case elfcpp::R_SPARC_DISP8:
1958 case elfcpp::R_SPARC_DISP16:
1959 case elfcpp::R_SPARC_DISP32:
1960 case elfcpp::R_SPARC_DISP64:
1961 case elfcpp::R_SPARC_PC_HH22:
1962 case elfcpp::R_SPARC_PC_HM10:
1963 case elfcpp::R_SPARC_PC_LM22:
1964 case elfcpp::R_SPARC_PC10:
1965 case elfcpp::R_SPARC_PC22:
1966 case elfcpp::R_SPARC_WDISP30:
1967 case elfcpp::R_SPARC_WDISP22:
1968 case elfcpp::R_SPARC_WDISP19:
1969 case elfcpp::R_SPARC_WDISP16:
1970 {
1971 if (gsym->needs_plt_entry())
1972 target->make_plt_entry(symtab, layout, gsym);
1973 // Make a dynamic relocation if necessary.
1974 int flags = Symbol::NON_PIC_REF;
1975 if (gsym->type() == elfcpp::STT_FUNC)
1976 flags |= Symbol::FUNCTION_CALL;
1977 if (gsym->needs_dynamic_reloc(flags))
1978 {
966d4097 1979 if (gsym->may_need_copy_reloc())
f5314dd5 1980 {
12c0daef 1981 target->copy_reloc(symtab, layout, object,
f5314dd5
DM		 1982 data_shndx, output_section, gsym,
1983 reloc);
1984 }
1985 else
1986 {
1987 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
32b769e1 1988 check_non_pic(object, r_type);
f5314dd5
DM		 1989 rela_dyn->add_global(gsym, orig_r_type, output_section, object,
1990 data_shndx, reloc.get_r_offset(),
1991 reloc.get_r_addend());
1992 }
1993 }
1994 }
1995 break;
1996
1997 case elfcpp::R_SPARC_UA64:
1998 case elfcpp::R_SPARC_64:
1999 case elfcpp::R_SPARC_HIX22:
2000 case elfcpp::R_SPARC_LOX10:
2001 case elfcpp::R_SPARC_H44:
2002 case elfcpp::R_SPARC_M44:
2003 case elfcpp::R_SPARC_L44:
2004 case elfcpp::R_SPARC_HH22:
2005 case elfcpp::R_SPARC_HM10:
2006 case elfcpp::R_SPARC_LM22:
2007 case elfcpp::R_SPARC_HI22:
2008 case elfcpp::R_SPARC_LO10:
2009 case elfcpp::R_SPARC_OLO10:
2010 case elfcpp::R_SPARC_UA32:
2011 case elfcpp::R_SPARC_32:
2012 case elfcpp::R_SPARC_UA16:
2013 case elfcpp::R_SPARC_16:
2014 case elfcpp::R_SPARC_11:
2015 case elfcpp::R_SPARC_10:
2016 case elfcpp::R_SPARC_8:
2017 case elfcpp::R_SPARC_7:
2018 case elfcpp::R_SPARC_6:
2019 case elfcpp::R_SPARC_5:
2020 {
2021 // Make a PLT entry if necessary.
2022 if (gsym->needs_plt_entry())
2023 {
2024 target->make_plt_entry(symtab, layout, gsym);
2025 // Since this is not a PC-relative relocation, we may be
2026 // taking the address of a function. In that case we need to
2027 // set the entry in the dynamic symbol table to the address of
2028 // the PLT entry.
2029 if (gsym->is_from_dynobj() && !parameters->options().shared())
2030 gsym->set_needs_dynsym_value();
2031 }
2032 // Make a dynamic relocation if necessary.
2033 if (gsym->needs_dynamic_reloc(Symbol::ABSOLUTE_REF))
2034 {
966d4097 2035 if (gsym->may_need_copy_reloc())
f5314dd5 2036 {
12c0daef 2037 target->copy_reloc(symtab, layout, object,
f5314dd5
DM		 2038 data_shndx, output_section, gsym, reloc);
2039 }
2040 else if ((r_type == elfcpp::R_SPARC_32
2041 || r_type == elfcpp::R_SPARC_64)
2042 && gsym->can_use_relative_reloc(false))
2043 {
2044 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2045 rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE,
2046 output_section, object,
2047 data_shndx, reloc.get_r_offset(),
2048 reloc.get_r_addend());
2049 }
2050 else
2051 {
2052 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2053
32b769e1 2054 check_non_pic(object, r_type);
f5314dd5
DM		 2055 if (gsym->is_from_dynobj()
2056 || gsym->is_undefined()
2057 || gsym->is_preemptible())
2058 rela_dyn->add_global(gsym, orig_r_type, output_section,
2059 object, data_shndx,
2060 reloc.get_r_offset(),
2061 reloc.get_r_addend());
2062 else
2063 rela_dyn->add_global_relative(gsym, orig_r_type,
2064 output_section, object,
2065 data_shndx,
2066 reloc.get_r_offset(),
2067 reloc.get_r_addend());
2068 }
2069 }
2070 }
2071 break;
2072
2073 case elfcpp::R_SPARC_GOT10:
2074 case elfcpp::R_SPARC_GOT13:
2075 case elfcpp::R_SPARC_GOT22:
2076 {
2077 // The symbol requires a GOT entry.
2078 Output_data_got<size, big_endian>* got;
2079
2080 got = target->got_section(symtab, layout);
2081 if (gsym->final_value_is_known())
2082 got->add_global(gsym, GOT_TYPE_STANDARD);
2083 else
2084 {
2085 // If this symbol is not fully resolved, we need to add a
2086 // dynamic relocation for it.
2087 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2088 if (gsym->is_from_dynobj()
2089 || gsym->is_undefined()
2090 || gsym->is_preemptible())
2091 got->add_global_with_rela(gsym, GOT_TYPE_STANDARD, rela_dyn,
2092 elfcpp::R_SPARC_GLOB_DAT);
2093 else if (!gsym->has_got_offset(GOT_TYPE_STANDARD))
2094 {
2095 unsigned int off = got->add_constant(0);
2096
2097 gsym->set_got_offset(GOT_TYPE_STANDARD, off);
2098 rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE,
2099 got, off, 0);
2100 }
2101 }
2102 }
2103 break;
2104
2105 // These are initial tls relocs, which are expected when
2106 // linking.
2107 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2108 case elfcpp::R_SPARC_TLS_GD_LO10:
2109 case elfcpp::R_SPARC_TLS_GD_ADD:
2110 case elfcpp::R_SPARC_TLS_GD_CALL:
2111 case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic
2112 case elfcpp::R_SPARC_TLS_LDM_LO10:
2113 case elfcpp::R_SPARC_TLS_LDM_ADD:
2114 case elfcpp::R_SPARC_TLS_LDM_CALL:
2115 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
2116 case elfcpp::R_SPARC_TLS_LDO_LOX10:
2117 case elfcpp::R_SPARC_TLS_LDO_ADD:
2118 case elfcpp::R_SPARC_TLS_LE_HIX22:
2119 case elfcpp::R_SPARC_TLS_LE_LOX10:
2120 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
2121 case elfcpp::R_SPARC_TLS_IE_LO10:
2122 case elfcpp::R_SPARC_TLS_IE_LD:
2123 case elfcpp::R_SPARC_TLS_IE_LDX:
9efe6174 2124 case elfcpp::R_SPARC_TLS_IE_ADD:
f5314dd5
DM		 2125 {
2126 const bool is_final = gsym->final_value_is_known();
2127 const tls::Tls_optimization optimized_type
2128 = optimize_tls_reloc(is_final, r_type);
2129 switch (r_type)
2130 {
2131 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2132 case elfcpp::R_SPARC_TLS_GD_LO10:
2133 case elfcpp::R_SPARC_TLS_GD_ADD:
2134 case elfcpp::R_SPARC_TLS_GD_CALL:
2135 if (optimized_type == tls::TLSOPT_NONE)
2136 {
2137 // Create a pair of GOT entries for the module index and
2138 // dtv-relative offset.
2139 Output_data_got<size, big_endian>* got
2140 = target->got_section(symtab, layout);
2141 got->add_global_pair_with_rela(gsym, GOT_TYPE_TLS_PAIR,
2142 target->rela_dyn_section(layout),
2143 (size == 64 ?
2144 elfcpp::R_SPARC_TLS_DTPMOD64 :
2145 elfcpp::R_SPARC_TLS_DTPMOD32),
2146 (size == 64 ?
2147 elfcpp::R_SPARC_TLS_DTPOFF64 :
2148 elfcpp::R_SPARC_TLS_DTPOFF32));
2149
2150 // Emit R_SPARC_WPLT30 against "__tls_get_addr"
2151 if (r_type == elfcpp::R_SPARC_TLS_GD_CALL)
2152 generate_tls_call(symtab, layout, target);
2153 }
2154 else if (optimized_type == tls::TLSOPT_TO_IE)
2155 {
2156 // Create a GOT entry for the tp-relative offset.
2157 Output_data_got<size, big_endian>* got
2158 = target->got_section(symtab, layout);
2159 got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET,
2160 target->rela_dyn_section(layout),
2161 (size == 64 ?
2162 elfcpp::R_SPARC_TLS_TPOFF64 :
2163 elfcpp::R_SPARC_TLS_TPOFF32));
2164 }
2165 else if (optimized_type != tls::TLSOPT_TO_LE)
2166 unsupported_reloc_global(object, r_type, gsym);
2167 break;
2168
2169 case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic
2170 case elfcpp::R_SPARC_TLS_LDM_LO10:
2171 case elfcpp::R_SPARC_TLS_LDM_ADD:
2172 case elfcpp::R_SPARC_TLS_LDM_CALL:
2173 if (optimized_type == tls::TLSOPT_NONE)
2174 {
2175 // Create a GOT entry for the module index.
2176 target->got_mod_index_entry(symtab, layout, object);
2177
2178 if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL)
2179 generate_tls_call(symtab, layout, target);
2180 }
2181 else if (optimized_type != tls::TLSOPT_TO_LE)
2182 unsupported_reloc_global(object, r_type, gsym);
2183 break;
2184
2185 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
2186 case elfcpp::R_SPARC_TLS_LDO_LOX10:
2187 case elfcpp::R_SPARC_TLS_LDO_ADD:
2188 break;
2189
2190 case elfcpp::R_SPARC_TLS_LE_HIX22:
2191 case elfcpp::R_SPARC_TLS_LE_LOX10:
2192 layout->set_has_static_tls();
2193 if (parameters->options().shared())
2194 {
2195 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2196 rela_dyn->add_global_relative(gsym, orig_r_type,
2197 output_section, object,
2198 data_shndx, reloc.get_r_offset(),
2199 0);
2200 }
2201 break;
2202
2203 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
2204 case elfcpp::R_SPARC_TLS_IE_LO10:
2205 case elfcpp::R_SPARC_TLS_IE_LD:
2206 case elfcpp::R_SPARC_TLS_IE_LDX:
9efe6174 2207 case elfcpp::R_SPARC_TLS_IE_ADD:
f5314dd5
DM		 2208 layout->set_has_static_tls();
2209 if (optimized_type == tls::TLSOPT_NONE)
2210 {
2211 // Create a GOT entry for the tp-relative offset.
2212 Output_data_got<size, big_endian>* got
2213 = target->got_section(symtab, layout);
2214 got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET,
2215 target->rela_dyn_section(layout),
2216 (size == 64 ?
2217 elfcpp::R_SPARC_TLS_TPOFF64 :
2218 elfcpp::R_SPARC_TLS_TPOFF32));
2219 }
2220 else if (optimized_type != tls::TLSOPT_TO_LE)
2221 unsupported_reloc_global(object, r_type, gsym);
2222 break;
2223 }
2224 }
2225 break;
2226
2227 // These are relocations which should only be seen by the
2228 // dynamic linker, and should never be seen here.
2229 case elfcpp::R_SPARC_COPY:
2230 case elfcpp::R_SPARC_GLOB_DAT:
2231 case elfcpp::R_SPARC_JMP_SLOT:
2232 case elfcpp::R_SPARC_RELATIVE:
2233 case elfcpp::R_SPARC_TLS_DTPMOD64:
2234 case elfcpp::R_SPARC_TLS_DTPMOD32:
2235 case elfcpp::R_SPARC_TLS_DTPOFF64:
2236 case elfcpp::R_SPARC_TLS_DTPOFF32:
2237 case elfcpp::R_SPARC_TLS_TPOFF64:
2238 case elfcpp::R_SPARC_TLS_TPOFF32:
2239 gold_error(_("%s: unexpected reloc %u in object file"),
2240 object->name().c_str(), r_type);
2241 break;
2242
2243 default:
2244 unsupported_reloc_global(object, r_type, gsym);
2245 break;
2246 }
2247}
2248
6d03d481
ST		 2249// Process relocations for gc.
2250
2251template<int size, bool big_endian>
2252void
2253Target_sparc<size, big_endian>::gc_process_relocs(
6d03d481
ST		 2254 Symbol_table* symtab,
2255 Layout* layout,
2256 Sized_relobj<size, big_endian>* object,
2257 unsigned int data_shndx,
2258 unsigned int,
2259 const unsigned char* prelocs,
2260 size_t reloc_count,
2261 Output_section* output_section,
2262 bool needs_special_offset_handling,
2263 size_t local_symbol_count,
2264 const unsigned char* plocal_symbols)
2265{
2266 typedef Target_sparc<size, big_endian> Sparc;
2ea97941 2267 typedef typename Target_sparc<size, big_endian>::Scan Scan;
6d03d481 2268
2ea97941 2269 gold::gc_process_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>(
6d03d481
ST		 2270 symtab,
2271 layout,
2272 this,
2273 object,
2274 data_shndx,
2275 prelocs,
2276 reloc_count,
2277 output_section,
2278 needs_special_offset_handling,
2279 local_symbol_count,
2280 plocal_symbols);
2281}
2282
f5314dd5
DM		 2283// Scan relocations for a section.
2284
2285template<int size, bool big_endian>
2286void
2287Target_sparc<size, big_endian>::scan_relocs(
f5314dd5
DM		 2288 Symbol_table* symtab,
2289 Layout* layout,
2290 Sized_relobj<size, big_endian>* object,
2291 unsigned int data_shndx,
2292 unsigned int sh_type,
2293 const unsigned char* prelocs,
2294 size_t reloc_count,
2295 Output_section* output_section,
2296 bool needs_special_offset_handling,
2297 size_t local_symbol_count,
2298 const unsigned char* plocal_symbols)
2299{
2300 typedef Target_sparc<size, big_endian> Sparc;
2ea97941 2301 typedef typename Target_sparc<size, big_endian>::Scan Scan;
f5314dd5
DM		 2302
2303 if (sh_type == elfcpp::SHT_REL)
2304 {
2305 gold_error(_("%s: unsupported REL reloc section"),
2306 object->name().c_str());
2307 return;
2308 }
2309
2ea97941 2310 gold::scan_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>(
f5314dd5
DM		 2311 symtab,
2312 layout,
2313 this,
2314 object,
2315 data_shndx,
2316 prelocs,
2317 reloc_count,
2318 output_section,
2319 needs_special_offset_handling,
2320 local_symbol_count,
2321 plocal_symbols);
2322}
2323
2324// Finalize the sections.
2325
2326template<int size, bool big_endian>
2327void
d5b40221
DK		 2328Target_sparc<size, big_endian>::do_finalize_sections(
2329 Layout* layout,
f59f41f3
DK		 2330 const Input_objects*,
2331 Symbol_table*)
f5314dd5
DM		 2332{
2333 // Fill in some more dynamic tags.
ea715a34
ILT		 2334 const Reloc_section* rel_plt = (this->plt_ == NULL
2335 ? NULL
2336 : this->plt_->rel_plt());
2337 layout->add_target_dynamic_tags(false, this->plt_, rel_plt,
2338 this->rela_dyn_, true);
f5314dd5
DM		 2339
2340 // Emit any relocs we saved in an attempt to avoid generating COPY
2341 // relocs.
12c0daef
ILT		 2342 if (this->copy_relocs_.any_saved_relocs())
2343 this->copy_relocs_.emit(this->rela_dyn_section(layout));
f5314dd5
DM		 2344}
2345
2346// Perform a relocation.
2347
2348template<int size, bool big_endian>
2349inline bool
2350Target_sparc<size, big_endian>::Relocate::relocate(
2351 const Relocate_info<size, big_endian>* relinfo,
2352 Target_sparc* target,
031cdbed 2353 Output_section*,
f5314dd5
DM		 2354 size_t relnum,
2355 const elfcpp::Rela<size, big_endian>& rela,
2356 unsigned int r_type,
2357 const Sized_symbol<size>* gsym,
2358 const Symbol_value<size>* psymval,
2359 unsigned char* view,
2360 typename elfcpp::Elf_types<size>::Elf_Addr address,
2361 section_size_type view_size)
2362{
2363 r_type &= 0xff;
2364
2365 if (this->ignore_gd_add_)
2366 {
2367 if (r_type != elfcpp::R_SPARC_TLS_GD_ADD)
2368 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2369 _("missing expected TLS relocation"));
2370 else
2371 {
2372 this->ignore_gd_add_ = false;
2373 return false;
2374 }
2375 }
2376
2377 typedef Sparc_relocate_functions<size, big_endian> Reloc;
2378
2379 // Pick the value to use for symbols defined in shared objects.
2380 Symbol_value<size> symval;
2381 if (gsym != NULL
de4c45bd
ILT		 2382 && gsym->use_plt_offset(r_type == elfcpp::R_SPARC_DISP8
2383 || r_type == elfcpp::R_SPARC_DISP16
2384 || r_type == elfcpp::R_SPARC_DISP32
2385 || r_type == elfcpp::R_SPARC_DISP64
2386 || r_type == elfcpp::R_SPARC_PC_HH22
2387 || r_type == elfcpp::R_SPARC_PC_HM10
2388 || r_type == elfcpp::R_SPARC_PC_LM22
2389 || r_type == elfcpp::R_SPARC_PC10
2390 || r_type == elfcpp::R_SPARC_PC22
2391 || r_type == elfcpp::R_SPARC_WDISP30
2392 || r_type == elfcpp::R_SPARC_WDISP22
2393 || r_type == elfcpp::R_SPARC_WDISP19
2394 || r_type == elfcpp::R_SPARC_WDISP16))
f5314dd5 2395 {
2ea97941 2396 elfcpp::Elf_Xword value;
f5314dd5 2397
2ea97941 2398 value = target->plt_section()->address() + gsym->plt_offset();
f5314dd5 2399
2ea97941 2400 symval.set_output_value(value);
f5314dd5
DM		 2401
2402 psymval = &symval;
2403 }
2404
2405 const Sized_relobj<size, big_endian>* object = relinfo->object;
2406 const elfcpp::Elf_Xword addend = rela.get_r_addend();
2407
2408 // Get the GOT offset if needed. Unlike i386 and x86_64, our GOT
2409 // pointer points to the beginning, not the end, of the table.
2410 // So we just use the plain offset.
2411 bool have_got_offset = false;
2412 unsigned int got_offset = 0;
2413 switch (r_type)
2414 {
2415 case elfcpp::R_SPARC_GOT10:
2416 case elfcpp::R_SPARC_GOT13:
2417 case elfcpp::R_SPARC_GOT22:
2418 if (gsym != NULL)
2419 {
2420 gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD));
2421 got_offset = gsym->got_offset(GOT_TYPE_STANDARD);
2422 }
2423 else
2424 {
2425 unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
2426 gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD));
2427 got_offset = object->local_got_offset(r_sym, GOT_TYPE_STANDARD);
2428 }
2429 have_got_offset = true;
2430 break;
2431
2432 default:
2433 break;
2434 }
2435
2436 switch (r_type)
2437 {
2438 case elfcpp::R_SPARC_NONE:
2439 case elfcpp::R_SPARC_REGISTER:
2440 case elfcpp::R_SPARC_GNU_VTINHERIT:
2441 case elfcpp::R_SPARC_GNU_VTENTRY:
2442 break;
2443
2444 case elfcpp::R_SPARC_8:
2445 Relocate_functions<size, big_endian>::rela8(view, object,
2446 psymval, addend);
2447 break;
2448
2449 case elfcpp::R_SPARC_16:
705b5121
DM		 2450 if (rela.get_r_offset() & 0x1)
2451 {
2452 // The assembler can sometimes emit unaligned relocations
2453 // for dwarf2 cfi directives.
2454 Reloc::ua16(view, object, psymval, addend);
2455 }
2456 else
2457 Relocate_functions<size, big_endian>::rela16(view, object,
2458 psymval, addend);
f5314dd5
DM		 2459 break;
2460
2461 case elfcpp::R_SPARC_32:
2462 if (!parameters->options().output_is_position_independent())
705b5121
DM		 2463 {
2464 if (rela.get_r_offset() & 0x3)
2465 {
2466 // The assembler can sometimes emit unaligned relocations
2467 // for dwarf2 cfi directives.
2468 Reloc::ua32(view, object, psymval, addend);
2469 }
2470 else
2471 Relocate_functions<size, big_endian>::rela32(view, object,
2472 psymval, addend);
2473 }
f5314dd5
DM		 2474 break;
2475
2476 case elfcpp::R_SPARC_DISP8:
2477 Reloc::disp8(view, object, psymval, addend, address);
2478 break;
2479
2480 case elfcpp::R_SPARC_DISP16:
2481 Reloc::disp16(view, object, psymval, addend, address);
2482 break;
2483
2484 case elfcpp::R_SPARC_DISP32:
2485 Reloc::disp32(view, object, psymval, addend, address);
2486 break;
2487
2488 case elfcpp::R_SPARC_DISP64:
2489 Reloc::disp64(view, object, psymval, addend, address);
2490 break;
2491
2492 case elfcpp::R_SPARC_WDISP30:
2493 case elfcpp::R_SPARC_WPLT30:
2494 Reloc::wdisp30(view, object, psymval, addend, address);
2495 break;
2496
2497 case elfcpp::R_SPARC_WDISP22:
2498 Reloc::wdisp22(view, object, psymval, addend, address);
2499 break;
2500
2501 case elfcpp::R_SPARC_WDISP19:
2502 Reloc::wdisp19(view, object, psymval, addend, address);
2503 break;
2504
2505 case elfcpp::R_SPARC_WDISP16:
2506 Reloc::wdisp16(view, object, psymval, addend, address);
2507 break;
2508
2509 case elfcpp::R_SPARC_HI22:
2510 Reloc::hi22(view, object, psymval, addend);
2511 break;
2512
2513 case elfcpp::R_SPARC_22:
2514 Reloc::rela32_22(view, object, psymval, addend);
2515 break;
2516
2517 case elfcpp::R_SPARC_13:
2518 Reloc::rela32_13(view, object, psymval, addend);
2519 break;
2520
2521 case elfcpp::R_SPARC_LO10:
2522 Reloc::lo10(view, object, psymval, addend);
2523 break;
2524
2525 case elfcpp::R_SPARC_GOT10:
2526 Reloc::lo10(view, got_offset, addend);
2527 break;
2528
2529 case elfcpp::R_SPARC_GOT13:
2530 Reloc::rela32_13(view, got_offset, addend);
2531 break;
2532
2533 case elfcpp::R_SPARC_GOT22:
2534 Reloc::hi22(view, got_offset, addend);
2535 break;
2536
2537 case elfcpp::R_SPARC_PC10:
2538 Reloc::pc10(view, object, psymval, addend, address);
2539 break;
2540
2541 case elfcpp::R_SPARC_PC22:
2542 Reloc::pc22(view, object, psymval, addend, address);
2543 break;
2544
2545 case elfcpp::R_SPARC_TLS_DTPOFF32:
2546 case elfcpp::R_SPARC_UA32:
2547 Reloc::ua32(view, object, psymval, addend);
2548 break;
2549
2550 case elfcpp::R_SPARC_PLT64:
2551 Relocate_functions<size, big_endian>::rela64(view, object,
2552 psymval, addend);
2553 break;
2554
2555 case elfcpp::R_SPARC_PLT32:
2556 Relocate_functions<size, big_endian>::rela32(view, object,
2557 psymval, addend);
2558 break;
2559
2560 case elfcpp::R_SPARC_HIPLT22:
2561 Reloc::hi22(view, object, psymval, addend);
2562 break;
2563
2564 case elfcpp::R_SPARC_LOPLT10:
2565 Reloc::lo10(view, object, psymval, addend);
2566 break;
2567
2568 case elfcpp::R_SPARC_PCPLT32:
2569 Reloc::disp32(view, object, psymval, addend, address);
2570 break;
2571
2572 case elfcpp::R_SPARC_PCPLT22:
2573 Reloc::pcplt22(view, object, psymval, addend, address);
2574 break;
2575
2576 case elfcpp::R_SPARC_PCPLT10:
2577 Reloc::lo10(view, object, psymval, addend, address);
2578 break;
2579
2580 case elfcpp::R_SPARC_64:
2581 if (!parameters->options().output_is_position_independent())
705b5121
DM		 2582 {
2583 if (rela.get_r_offset() & 0x7)
2584 {
2585 // The assembler can sometimes emit unaligned relocations
2586 // for dwarf2 cfi directives.
2587 Reloc::ua64(view, object, psymval, addend);
2588 }
2589 else
2590 Relocate_functions<size, big_endian>::rela64(view, object,
2591 psymval, addend);
2592 }
f5314dd5
DM		 2593 break;
2594
2595 case elfcpp::R_SPARC_OLO10:
2596 {
2597 unsigned int addend2 = rela.get_r_info() & 0xffffffff;
2598 addend2 = ((addend2 >> 8) ^ 0x800000) - 0x800000;
2599 Reloc::olo10(view, object, psymval, addend, addend2);
2600 }
2601 break;
2602
2603 case elfcpp::R_SPARC_HH22:
2604 Reloc::hh22(view, object, psymval, addend);
2605 break;
2606
2607 case elfcpp::R_SPARC_PC_HH22:
2608 Reloc::pc_hh22(view, object, psymval, addend, address);
2609 break;
2610
2611 case elfcpp::R_SPARC_HM10:
2612 Reloc::hm10(view, object, psymval, addend);
2613 break;
2614
2615 case elfcpp::R_SPARC_PC_HM10:
2616 Reloc::pc_hm10(view, object, psymval, addend, address);
2617 break;
2618
2619 case elfcpp::R_SPARC_LM22:
2620 Reloc::hi22(view, object, psymval, addend);
2621 break;
2622
2623 case elfcpp::R_SPARC_PC_LM22:
2624 Reloc::pcplt22(view, object, psymval, addend, address);
2625 break;
2626
2627 case elfcpp::R_SPARC_11:
2628 Reloc::rela32_11(view, object, psymval, addend);
2629 break;
2630
2631 case elfcpp::R_SPARC_10:
2632 Reloc::rela32_10(view, object, psymval, addend);
2633 break;
2634
2635 case elfcpp::R_SPARC_7:
2636 Reloc::rela32_7(view, object, psymval, addend);
2637 break;
2638
2639 case elfcpp::R_SPARC_6:
2640 Reloc::rela32_6(view, object, psymval, addend);
2641 break;
2642
2643 case elfcpp::R_SPARC_5:
2644 Reloc::rela32_5(view, object, psymval, addend);
2645 break;
2646
2647 case elfcpp::R_SPARC_HIX22:
2648 Reloc::hix22(view, object, psymval, addend);
2649 break;
2650
2651 case elfcpp::R_SPARC_LOX10:
2652 Reloc::lox10(view, object, psymval, addend);
2653 break;
2654
2655 case elfcpp::R_SPARC_H44:
2656 Reloc::h44(view, object, psymval, addend);
2657 break;
2658
2659 case elfcpp::R_SPARC_M44:
2660 Reloc::m44(view, object, psymval, addend);
2661 break;
2662
2663 case elfcpp::R_SPARC_L44:
2664 Reloc::l44(view, object, psymval, addend);
2665 break;
2666
2667 case elfcpp::R_SPARC_TLS_DTPOFF64:
2668 case elfcpp::R_SPARC_UA64:
2669 Reloc::ua64(view, object, psymval, addend);
2670 break;
2671
2672 case elfcpp::R_SPARC_UA16:
2673 Reloc::ua16(view, object, psymval, addend);
2674 break;
2675
2676 case elfcpp::R_SPARC_TLS_GD_HI22:
2677 case elfcpp::R_SPARC_TLS_GD_LO10:
2678 case elfcpp::R_SPARC_TLS_GD_ADD:
2679 case elfcpp::R_SPARC_TLS_GD_CALL:
2680 case elfcpp::R_SPARC_TLS_LDM_HI22:
2681 case elfcpp::R_SPARC_TLS_LDM_LO10:
2682 case elfcpp::R_SPARC_TLS_LDM_ADD:
2683 case elfcpp::R_SPARC_TLS_LDM_CALL:
2684 case elfcpp::R_SPARC_TLS_LDO_HIX22:
2685 case elfcpp::R_SPARC_TLS_LDO_LOX10:
2686 case elfcpp::R_SPARC_TLS_LDO_ADD:
2687 case elfcpp::R_SPARC_TLS_IE_HI22:
2688 case elfcpp::R_SPARC_TLS_IE_LO10:
2689 case elfcpp::R_SPARC_TLS_IE_LD:
2690 case elfcpp::R_SPARC_TLS_IE_LDX:
9efe6174 2691 case elfcpp::R_SPARC_TLS_IE_ADD:
f5314dd5
DM		 2692 case elfcpp::R_SPARC_TLS_LE_HIX22:
2693 case elfcpp::R_SPARC_TLS_LE_LOX10:
2694 this->relocate_tls(relinfo, target, relnum, rela,
2695 r_type, gsym, psymval, view,
2696 address, view_size);
2697 break;
2698
2699 case elfcpp::R_SPARC_COPY:
2700 case elfcpp::R_SPARC_GLOB_DAT:
2701 case elfcpp::R_SPARC_JMP_SLOT:
2702 case elfcpp::R_SPARC_RELATIVE:
2703 // These are outstanding tls relocs, which are unexpected when
2704 // linking.
2705 case elfcpp::R_SPARC_TLS_DTPMOD64:
2706 case elfcpp::R_SPARC_TLS_DTPMOD32:
2707 case elfcpp::R_SPARC_TLS_TPOFF64:
2708 case elfcpp::R_SPARC_TLS_TPOFF32:
2709 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2710 _("unexpected reloc %u in object file"),
2711 r_type);
2712 break;
2713
2714 default:
2715 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2716 _("unsupported reloc %u"),
2717 r_type);
2718 break;
2719 }
2720
2721 return true;
2722}
2723
2724// Perform a TLS relocation.
2725
2726template<int size, bool big_endian>
2727inline void
2728Target_sparc<size, big_endian>::Relocate::relocate_tls(
2729 const Relocate_info<size, big_endian>* relinfo,
2730 Target_sparc<size, big_endian>* target,
2731 size_t relnum,
2732 const elfcpp::Rela<size, big_endian>& rela,
2733 unsigned int r_type,
2734 const Sized_symbol<size>* gsym,
2735 const Symbol_value<size>* psymval,
2736 unsigned char* view,
2737 typename elfcpp::Elf_types<size>::Elf_Addr address,
2738 section_size_type)
2739{
2740 Output_segment* tls_segment = relinfo->layout->tls_segment();
2741 typedef Sparc_relocate_functions<size, big_endian> Reloc;
2742 const Sized_relobj<size, big_endian>* object = relinfo->object;
2743 typedef typename elfcpp::Swap<32, true>::Valtype Insntype;
2744
2745 const elfcpp::Elf_Xword addend = rela.get_r_addend();
2ea97941 2746 typename elfcpp::Elf_types<size>::Elf_Addr value = psymval->value(object, 0);
f5314dd5
DM		 2747
2748 const bool is_final =
2749 (gsym == NULL
2750 ? !parameters->options().output_is_position_independent()
2751 : gsym->final_value_is_known());
2752 const tls::Tls_optimization optimized_type
2753 = optimize_tls_reloc(is_final, r_type);
2754
2755 switch (r_type)
2756 {
2757 case elfcpp::R_SPARC_TLS_GD_HI22:
2758 case elfcpp::R_SPARC_TLS_GD_LO10:
2759 case elfcpp::R_SPARC_TLS_GD_ADD:
2760 case elfcpp::R_SPARC_TLS_GD_CALL:
2761 if (optimized_type == tls::TLSOPT_TO_LE)
2762 {
2763 Insntype* wv = reinterpret_cast<Insntype*>(view);
2764 Insntype val;
2765
2ea97941 2766 value -= tls_segment->memsz();
f5314dd5
DM		 2767
2768 switch (r_type)
2769 {
2770 case elfcpp::R_SPARC_TLS_GD_HI22:
2771 // TLS_GD_HI22 --> TLS_LE_HIX22
2ea97941 2772 Reloc::hix22(view, value, addend);
f5314dd5
DM		 2773 break;
2774
2775 case elfcpp::R_SPARC_TLS_GD_LO10:
2776 // TLS_GD_LO10 --> TLS_LE_LOX10
2ea97941 2777 Reloc::lox10(view, value, addend);
f5314dd5
DM		 2778 break;
2779
2780 case elfcpp::R_SPARC_TLS_GD_ADD:
2781 // add %reg1, %reg2, %reg3 --> mov %g7, %reg2, %reg3
2782 val = elfcpp::Swap<32, true>::readval(wv);
2783 val = (val & ~0x7c000) | 0x1c000;
2784 elfcpp::Swap<32, true>::writeval(wv, val);
2785 break;
2786 case elfcpp::R_SPARC_TLS_GD_CALL:
2787 // call __tls_get_addr --> nop
2788 elfcpp::Swap<32, true>::writeval(wv, sparc_nop);
2789 break;
2790 }
2791 break;
2792 }
2793 else
2794 {
2795 unsigned int got_type = (optimized_type == tls::TLSOPT_TO_IE
2796 ? GOT_TYPE_TLS_OFFSET
2797 : GOT_TYPE_TLS_PAIR);
2798 if (gsym != NULL)
2799 {
2800 gold_assert(gsym->has_got_offset(got_type));
2ea97941 2801 value = gsym->got_offset(got_type);
f5314dd5
DM		 2802 }
2803 else
2804 {
2805 unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
2806 gold_assert(object->local_has_got_offset(r_sym, got_type));
2ea97941 2807 value = object->local_got_offset(r_sym, got_type);
f5314dd5
DM		 2808 }
2809 if (optimized_type == tls::TLSOPT_TO_IE)
2810 {
2811 Insntype* wv = reinterpret_cast<Insntype*>(view);
2812 Insntype val;
2813
2814 switch (r_type)
2815 {
2816 case elfcpp::R_SPARC_TLS_GD_HI22:
2817 // TLS_GD_HI22 --> TLS_IE_HI22
2ea97941 2818 Reloc::hi22(view, value, addend);
f5314dd5
DM		 2819 break;
2820
2821 case elfcpp::R_SPARC_TLS_GD_LO10:
2822 // TLS_GD_LO10 --> TLS_IE_LO10
2ea97941 2823 Reloc::lo10(view, value, addend);
f5314dd5
DM		 2824 break;
2825
2826 case elfcpp::R_SPARC_TLS_GD_ADD:
2827 // add %reg1, %reg2, %reg3 --> ld [%reg1 + %reg2], %reg3
2828 val = elfcpp::Swap<32, true>::readval(wv);
2829
2830 if (size == 64)
2831 val |= 0xc0580000;
2832 else
2833 val |= 0xc0000000;
2834
2835 elfcpp::Swap<32, true>::writeval(wv, val);
2836 break;
2837
2838 case elfcpp::R_SPARC_TLS_GD_CALL:
2839 // The compiler can put the TLS_GD_ADD instruction
2840 // into the delay slot of the call. If so, we need
2841 // to transpose the two instructions so that the
2842 // the new sequence works properly.
2843 //
2844 // The test we use is if the instruction in the
2845 // delay slot is an add with destination register
2846 // equal to %o0
2847 val = elfcpp::Swap<32, true>::readval(wv + 1);
2848 if ((val & 0x81f80000) == 0x80000000
2849 && ((val >> 25) & 0x1f) == 0x8)
2850 {
2851 if (size == 64)
2852 val |= 0xc0580000;
2853 else
2854 val |= 0xc0000000;
2855
2856 elfcpp::Swap<32, true>::writeval(wv, val);
2857
2858 wv += 1;
2859 this->ignore_gd_add_ = true;
2860 }
2861
2862 // call __tls_get_addr --> add %g7, %o0, %o0
2863 elfcpp::Swap<32, true>::writeval(wv, 0x9001c008);
2864 break;
2865 }
2866 break;
2867 }
2868 else if (optimized_type == tls::TLSOPT_NONE)
2869 {
2870 switch (r_type)
2871 {
2872 case elfcpp::R_SPARC_TLS_GD_HI22:
2ea97941 2873 Reloc::hi22(view, value, addend);
f5314dd5
DM		 2874 break;
2875 case elfcpp::R_SPARC_TLS_GD_LO10:
2ea97941 2876 Reloc::lo10(view, value, addend);
f5314dd5
DM		 2877 break;
2878 case elfcpp::R_SPARC_TLS_GD_ADD:
2879 break;
2880 case elfcpp::R_SPARC_TLS_GD_CALL:
2881 {
2882 Symbol_value<size> symval;
2ea97941 2883 elfcpp::Elf_Xword value;
f5314dd5
DM		 2884 Symbol* tsym;
2885
2886 tsym = target->tls_get_addr_sym_;
2887 gold_assert(tsym);
2ea97941
ILT		 2888 value = (target->plt_section()->address() +
2889 tsym->plt_offset());
2890 symval.set_output_value(value);
f5314dd5
DM		 2891 Reloc::wdisp30(view, object, &symval, addend, address);
2892 }
2893 break;
2894 }
2895 break;
2896 }
2897 }
2898 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2899 _("unsupported reloc %u"),
2900 r_type);
2901 break;
2902
2903 case elfcpp::R_SPARC_TLS_LDM_HI22:
2904 case elfcpp::R_SPARC_TLS_LDM_LO10:
2905 case elfcpp::R_SPARC_TLS_LDM_ADD:
2906 case elfcpp::R_SPARC_TLS_LDM_CALL:
2907 if (optimized_type == tls::TLSOPT_TO_LE)
2908 {
2909 Insntype* wv = reinterpret_cast<Insntype*>(view);
2910
2911 switch (r_type)
2912 {
2913 case elfcpp::R_SPARC_TLS_LDM_HI22:
2914 case elfcpp::R_SPARC_TLS_LDM_LO10:
2915 case elfcpp::R_SPARC_TLS_LDM_ADD:
2916 elfcpp::Swap<32, true>::writeval(wv, sparc_nop);
2917 break;
2918
2919 case elfcpp::R_SPARC_TLS_LDM_CALL:
2920 elfcpp::Swap<32, true>::writeval(wv, sparc_mov_g0_o0);
2921 break;
2922 }
2923 break;
2924 }
2925 else if (optimized_type == tls::TLSOPT_NONE)
2926 {
2927 // Relocate the field with the offset of the GOT entry for
2928 // the module index.
2929 unsigned int got_offset;
2930
2931 got_offset = target->got_mod_index_entry(NULL, NULL, NULL);
2932 switch (r_type)
2933 {
2934 case elfcpp::R_SPARC_TLS_LDM_HI22:
2935 Reloc::hi22(view, got_offset, addend);
2936 break;
2937 case elfcpp::R_SPARC_TLS_LDM_LO10:
2938 Reloc::lo10(view, got_offset, addend);
2939 break;
2940 case elfcpp::R_SPARC_TLS_LDM_ADD:
2941 break;
2942 case elfcpp::R_SPARC_TLS_LDM_CALL:
2943 {
2944 Symbol_value<size> symval;
2ea97941 2945 elfcpp::Elf_Xword value;
f5314dd5
DM		 2946 Symbol* tsym;
2947
2948 tsym = target->tls_get_addr_sym_;
2949 gold_assert(tsym);
2ea97941
ILT		 2950 value = (target->plt_section()->address() +
2951 tsym->plt_offset());
2952 symval.set_output_value(value);
f5314dd5
DM		 2953 Reloc::wdisp30(view, object, &symval, addend, address);
2954 }
2955 break;
2956 }
2957 break;
2958 }
2959 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2960 _("unsupported reloc %u"),
2961 r_type);
2962 break;
2963
2964 // These relocs can appear in debugging sections, in which case
2965 // we won't see the TLS_LDM relocs. The local_dynamic_type
2966 // field tells us this.
2967 case elfcpp::R_SPARC_TLS_LDO_HIX22:
2968 if (optimized_type == tls::TLSOPT_TO_LE)
2969 {
2ea97941
ILT		 2970 value -= tls_segment->memsz();
2971 Reloc::hix22(view, value, addend);
f5314dd5
DM		 2972 }
2973 else
2ea97941 2974 Reloc::ldo_hix22(view, value, addend);
f5314dd5
DM		 2975 break;
2976 case elfcpp::R_SPARC_TLS_LDO_LOX10:
2977 if (optimized_type == tls::TLSOPT_TO_LE)
2978 {
2ea97941
ILT		 2979 value -= tls_segment->memsz();
2980 Reloc::lox10(view, value, addend);
f5314dd5
DM		 2981 }
2982 else
2ea97941 2983 Reloc::ldo_lox10(view, value, addend);
f5314dd5
DM		 2984 break;
2985 case elfcpp::R_SPARC_TLS_LDO_ADD:
2986 if (optimized_type == tls::TLSOPT_TO_LE)
2987 {
2988 Insntype* wv = reinterpret_cast<Insntype*>(view);
2989 Insntype val;
2990
2991 // add %reg1, %reg2, %reg3 --> add %g7, %reg2, %reg3
2992 val = elfcpp::Swap<32, true>::readval(wv);
2993 val = (val & ~0x7c000) | 0x1c000;
2994 elfcpp::Swap<32, true>::writeval(wv, val);
2995 }
2996 break;
2997
2998 // When optimizing IE --> LE, the only relocation that is handled
2999 // differently is R_SPARC_TLS_IE_LD, it is rewritten from
3000 // 'ld{,x} [rs1 + rs2], rd' into 'mov rs2, rd' or simply a NOP is
3001 // rs2 and rd are the same.
3002 case elfcpp::R_SPARC_TLS_IE_LD:
3003 case elfcpp::R_SPARC_TLS_IE_LDX:
3004 if (optimized_type == tls::TLSOPT_TO_LE)
3005 {
3006 Insntype* wv = reinterpret_cast<Insntype*>(view);
3007 Insntype val = elfcpp::Swap<32, true>::readval(wv);
3008 Insntype rs2 = val & 0x1f;
3009 Insntype rd = (val >> 25) & 0x1f;
3010
3011 if (rs2 == rd)
3012 val = sparc_nop;
3013 else
3014 val = sparc_mov | (val & 0x3e00001f);
3015
3016 elfcpp::Swap<32, true>::writeval(wv, val);
3017 }
3018 break;
3019
3020 case elfcpp::R_SPARC_TLS_IE_HI22:
3021 case elfcpp::R_SPARC_TLS_IE_LO10:
3022 if (optimized_type == tls::TLSOPT_TO_LE)
3023 {
2ea97941 3024 value -= tls_segment->memsz();
f5314dd5
DM		 3025 switch (r_type)
3026 {
3027 case elfcpp::R_SPARC_TLS_IE_HI22:
3028 // IE_HI22 --> LE_HIX22
2ea97941 3029 Reloc::hix22(view, value, addend);
f5314dd5
DM		 3030 break;
3031 case elfcpp::R_SPARC_TLS_IE_LO10:
3032 // IE_LO10 --> LE_LOX10
2ea97941 3033 Reloc::lox10(view, value, addend);
f5314dd5
DM		 3034 break;
3035 }
3036 break;
3037 }
3038 else if (optimized_type == tls::TLSOPT_NONE)
3039 {
3040 // Relocate the field with the offset of the GOT entry for
3041 // the tp-relative offset of the symbol.
3042 if (gsym != NULL)
3043 {
3044 gold_assert(gsym->has_got_offset(GOT_TYPE_TLS_OFFSET));
2ea97941 3045 value = gsym->got_offset(GOT_TYPE_TLS_OFFSET);
f5314dd5
DM		 3046 }
3047 else
3048 {
3049 unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
3050 gold_assert(object->local_has_got_offset(r_sym,
3051 GOT_TYPE_TLS_OFFSET));
2ea97941
ILT		 3052 value = object->local_got_offset(r_sym,
3053 GOT_TYPE_TLS_OFFSET);
f5314dd5
DM		 3054 }
3055 switch (r_type)
3056 {
3057 case elfcpp::R_SPARC_TLS_IE_HI22:
2ea97941 3058 Reloc::hi22(view, value, addend);
f5314dd5
DM		 3059 break;
3060 case elfcpp::R_SPARC_TLS_IE_LO10:
2ea97941 3061 Reloc::lo10(view, value, addend);
f5314dd5
DM		 3062 break;
3063 }
3064 break;
3065 }
3066 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
3067 _("unsupported reloc %u"),
3068 r_type);
3069 break;
3070
9efe6174
ILT		 3071 case elfcpp::R_SPARC_TLS_IE_ADD:
3072 // This seems to be mainly so that we can find the addition
3073 // instruction if there is one. There doesn't seem to be any
3074 // actual relocation to apply.
3075 break;
3076
f5314dd5
DM		 3077 case elfcpp::R_SPARC_TLS_LE_HIX22:
3078 // If we're creating a shared library, a dynamic relocation will
3079 // have been created for this location, so do not apply it now.
3080 if (!parameters->options().shared())
3081 {
2ea97941
ILT		 3082 value -= tls_segment->memsz();
3083 Reloc::hix22(view, value, addend);
f5314dd5
DM		 3084 }
3085 break;
3086
3087 case elfcpp::R_SPARC_TLS_LE_LOX10:
3088 // If we're creating a shared library, a dynamic relocation will
3089 // have been created for this location, so do not apply it now.
3090 if (!parameters->options().shared())
3091 {
2ea97941
ILT		 3092 value -= tls_segment->memsz();
3093 Reloc::lox10(view, value, addend);
f5314dd5
DM		 3094 }
3095 break;
3096 }
3097}
3098
3099// Relocate section data.
3100
3101template<int size, bool big_endian>
3102void
3103Target_sparc<size, big_endian>::relocate_section(
3104 const Relocate_info<size, big_endian>* relinfo,
3105 unsigned int sh_type,
3106 const unsigned char* prelocs,
3107 size_t reloc_count,
3108 Output_section* output_section,
3109 bool needs_special_offset_handling,
3110 unsigned char* view,
3111 typename elfcpp::Elf_types<size>::Elf_Addr address,
364c7fa5
ILT		 3112 section_size_type view_size,
3113 const Reloc_symbol_changes* reloc_symbol_changes)
f5314dd5
DM		 3114{
3115 typedef Target_sparc<size, big_endian> Sparc;
3116 typedef typename Target_sparc<size, big_endian>::Relocate Sparc_relocate;
3117
3118 gold_assert(sh_type == elfcpp::SHT_RELA);
3119
3120 gold::relocate_section<size, big_endian, Sparc, elfcpp::SHT_RELA,
3121 Sparc_relocate>(
3122 relinfo,
3123 this,
3124 prelocs,
3125 reloc_count,
3126 output_section,
3127 needs_special_offset_handling,
3128 view,
3129 address,
364c7fa5
ILT		 3130 view_size,
3131 reloc_symbol_changes);
f5314dd5
DM		 3132}
3133
3134// Return the size of a relocation while scanning during a relocatable
3135// link.
3136
3137template<int size, bool big_endian>
3138unsigned int
3139Target_sparc<size, big_endian>::Relocatable_size_for_reloc::get_size_for_reloc(
3140 unsigned int,
3141 Relobj*)
3142{
3143 // We are always SHT_RELA, so we should never get here.
3144 gold_unreachable();
3145 return 0;
3146}
3147
3148// Scan the relocs during a relocatable link.
3149
3150template<int size, bool big_endian>
3151void
3152Target_sparc<size, big_endian>::scan_relocatable_relocs(
f5314dd5
DM		 3153 Symbol_table* symtab,
3154 Layout* layout,
3155 Sized_relobj<size, big_endian>* object,
3156 unsigned int data_shndx,
3157 unsigned int sh_type,
3158 const unsigned char* prelocs,
3159 size_t reloc_count,
3160 Output_section* output_section,
3161 bool needs_special_offset_handling,
3162 size_t local_symbol_count,
3163 const unsigned char* plocal_symbols,
3164 Relocatable_relocs* rr)
3165{
3166 gold_assert(sh_type == elfcpp::SHT_RELA);
3167
3168 typedef gold::Default_scan_relocatable_relocs<elfcpp::SHT_RELA,
3169 Relocatable_size_for_reloc> Scan_relocatable_relocs;
3170
3171 gold::scan_relocatable_relocs<size, big_endian, elfcpp::SHT_RELA,
3172 Scan_relocatable_relocs>(
f5314dd5
DM		 3173 symtab,
3174 layout,
3175 object,
3176 data_shndx,
3177 prelocs,
3178 reloc_count,
3179 output_section,
3180 needs_special_offset_handling,
3181 local_symbol_count,
3182 plocal_symbols,
3183 rr);
3184}
3185
3186// Relocate a section during a relocatable link.
3187
3188template<int size, bool big_endian>
3189void
3190Target_sparc<size, big_endian>::relocate_for_relocatable(
3191 const Relocate_info<size, big_endian>* relinfo,
3192 unsigned int sh_type,
3193 const unsigned char* prelocs,
3194 size_t reloc_count,
3195 Output_section* output_section,
3196 off_t offset_in_output_section,
3197 const Relocatable_relocs* rr,
3198 unsigned char* view,
3199 typename elfcpp::Elf_types<size>::Elf_Addr view_address,
3200 section_size_type view_size,
3201 unsigned char* reloc_view,
3202 section_size_type reloc_view_size)
3203{
3204 gold_assert(sh_type == elfcpp::SHT_RELA);
3205
3206 gold::relocate_for_relocatable<size, big_endian, elfcpp::SHT_RELA>(
3207 relinfo,
3208 prelocs,
3209 reloc_count,
3210 output_section,
3211 offset_in_output_section,
3212 rr,
3213 view,
3214 view_address,
3215 view_size,
3216 reloc_view,
3217 reloc_view_size);
3218}
3219
3220// Return the value to use for a dynamic which requires special
3221// treatment. This is how we support equality comparisons of function
3222// pointers across shared library boundaries, as described in the
3223// processor specific ABI supplement.
3224
3225template<int size, bool big_endian>
3226uint64_t
3227Target_sparc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const
3228{
3229 gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset());
3230 return this->plt_section()->address() + gsym->plt_offset();
3231}
3232
3233// The selector for sparc object files.
3234
3235template<int size, bool big_endian>
3236class Target_selector_sparc : public Target_selector
3237{
3238public:
3239 Target_selector_sparc()
3240 : Target_selector(elfcpp::EM_NONE, size, big_endian,
3241 (size == 64 ? "elf64-sparc" : "elf32-sparc"))
3242 { }
3243
2ea97941 3244 Target* do_recognize(int machine, int, int)
f5314dd5
DM		 3245 {
3246 switch (size)
3247 {
3248 case 64:
2ea97941 3249 if (machine != elfcpp::EM_SPARCV9)
f5314dd5
DM		 3250 return NULL;
3251 break;
3252
3253 case 32:
2ea97941
ILT		 3254 if (machine != elfcpp::EM_SPARC
3255 && machine != elfcpp::EM_SPARC32PLUS)
f5314dd5
DM		 3256 return NULL;
3257 break;
3258
3259 default:
3260 return NULL;
3261 }
3262
7f055c20 3263 return this->instantiate_target();
f5314dd5
DM		 3264 }
3265
3266 Target* do_instantiate_target()
7f055c20 3267 { return new Target_sparc<size, big_endian>(); }
f5314dd5
DM		 3268};
3269
3270Target_selector_sparc<32, true> target_selector_sparc32;
3271Target_selector_sparc<64, true> target_selector_sparc64;
3272
3273} // End anonymous namespace.
GDB Binutils - Deliverables
This page took 0.312241 seconds and 4 git commands to generate.