1 // sparc.cc -- sparc target support for gold.
3 // Copyright 2008, 2009 Free Software Foundation, Inc.
4 // Written by David S. Miller <davem@davemloft.net>.
6 // This file is part of gold.
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.
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.
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.
30 #include "parameters.h"
37 #include "copy-relocs.h"
39 #include "target-reloc.h"
40 #include "target-select.h"
49 template<int size, bool big_endian>
50 class Output_data_plt_sparc;
52 template<int size, bool big_endian>
53 class Target_sparc : public Sized_target<size, big_endian>
56 typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section;
59 : Sized_target<size, big_endian>(&sparc_info),
60 got_(NULL), plt_(NULL), rela_dyn_(NULL),
61 copy_relocs_(elfcpp::R_SPARC_COPY), dynbss_(NULL),
62 got_mod_index_offset_(-1U), tls_get_addr_sym_(NULL)
66 // Process the relocations to determine unreferenced sections for
67 // garbage collection.
69 gc_process_relocs(const General_options& options,
72 Sized_relobj<size, big_endian>* object,
73 unsigned int data_shndx,
75 const unsigned char* prelocs,
77 Output_section* output_section,
78 bool needs_special_offset_handling,
79 size_t local_symbol_count,
80 const unsigned char* plocal_symbols);
82 // Scan the relocations to look for symbol adjustments.
84 scan_relocs(const General_options& options,
87 Sized_relobj<size, big_endian>* object,
88 unsigned int data_shndx,
90 const unsigned char* prelocs,
92 Output_section* output_section,
93 bool needs_special_offset_handling,
94 size_t local_symbol_count,
95 const unsigned char* plocal_symbols);
96 // Finalize the sections.
98 do_finalize_sections(Layout*);
100 // Return the value to use for a dynamic which requires special
103 do_dynsym_value(const Symbol*) const;
105 // Relocate a section.
107 relocate_section(const Relocate_info<size, big_endian>*,
108 unsigned int sh_type,
109 const unsigned char* prelocs,
111 Output_section* output_section,
112 bool needs_special_offset_handling,
114 typename elfcpp::Elf_types<size>::Elf_Addr view_address,
115 section_size_type view_size);
117 // Scan the relocs during a relocatable link.
119 scan_relocatable_relocs(const General_options& options,
120 Symbol_table* symtab,
122 Sized_relobj<size, big_endian>* object,
123 unsigned int data_shndx,
124 unsigned int sh_type,
125 const unsigned char* prelocs,
127 Output_section* output_section,
128 bool needs_special_offset_handling,
129 size_t local_symbol_count,
130 const unsigned char* plocal_symbols,
131 Relocatable_relocs*);
133 // Relocate a section during a relocatable link.
135 relocate_for_relocatable(const Relocate_info<size, big_endian>*,
136 unsigned int sh_type,
137 const unsigned char* prelocs,
139 Output_section* output_section,
140 off_t offset_in_output_section,
141 const Relocatable_relocs*,
143 typename elfcpp::Elf_types<size>::Elf_Addr view_address,
144 section_size_type view_size,
145 unsigned char* reloc_view,
146 section_size_type reloc_view_size);
147 // Return whether SYM is defined by the ABI.
149 do_is_defined_by_abi(const Symbol* sym) const
151 // XXX Really need to support this better...
152 if (sym->type() == elfcpp::STT_SPARC_REGISTER)
155 return strcmp(sym->name(), "___tls_get_addr") == 0;
158 // Return whether there is a GOT section.
160 has_got_section() const
161 { return this->got_ != NULL; }
163 // Return the size of the GOT section.
167 gold_assert(this->got_ != NULL);
168 return this->got_->data_size();
173 // The class which scans relocations.
178 : issued_non_pic_error_(false)
182 local(const General_options& options, Symbol_table* symtab,
183 Layout* layout, Target_sparc* target,
184 Sized_relobj<size, big_endian>* object,
185 unsigned int data_shndx,
186 Output_section* output_section,
187 const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type,
188 const elfcpp::Sym<size, big_endian>& lsym);
191 global(const General_options& options, Symbol_table* symtab,
192 Layout* layout, Target_sparc* target,
193 Sized_relobj<size, big_endian>* object,
194 unsigned int data_shndx,
195 Output_section* output_section,
196 const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type,
201 unsupported_reloc_local(Sized_relobj<size, big_endian>*,
202 unsigned int r_type);
205 unsupported_reloc_global(Sized_relobj<size, big_endian>*,
206 unsigned int r_type, Symbol*);
209 generate_tls_call(Symbol_table* symtab, Layout* layout,
210 Target_sparc* target);
213 check_non_pic(Relobj*, unsigned int r_type);
215 // Whether we have issued an error about a non-PIC compilation.
216 bool issued_non_pic_error_;
219 // The class which implements relocation.
224 : ignore_gd_add_(false)
229 if (this->ignore_gd_add_)
231 // FIXME: This needs to specify the location somehow.
232 gold_error(_("missing expected TLS relocation"));
236 // Do a relocation. Return false if the caller should not issue
237 // any warnings about this relocation.
239 relocate(const Relocate_info<size, big_endian>*, Target_sparc*,
240 Output_section*, size_t relnum,
241 const elfcpp::Rela<size, big_endian>&,
242 unsigned int r_type, const Sized_symbol<size>*,
243 const Symbol_value<size>*,
245 typename elfcpp::Elf_types<size>::Elf_Addr,
249 // Do a TLS relocation.
251 relocate_tls(const Relocate_info<size, big_endian>*, Target_sparc* target,
252 size_t relnum, const elfcpp::Rela<size, big_endian>&,
253 unsigned int r_type, const Sized_symbol<size>*,
254 const Symbol_value<size>*,
256 typename elfcpp::Elf_types<size>::Elf_Addr,
259 // Ignore the next relocation which should be R_SPARC_TLS_GD_ADD
263 // A class which returns the size required for a relocation type,
264 // used while scanning relocs during a relocatable link.
265 class Relocatable_size_for_reloc
269 get_size_for_reloc(unsigned int, Relobj*);
272 // Get the GOT section, creating it if necessary.
273 Output_data_got<size, big_endian>*
274 got_section(Symbol_table*, Layout*);
276 // Create a PLT entry for a global symbol.
278 make_plt_entry(Symbol_table*, Layout*, Symbol*);
280 // Create a GOT entry for the TLS module index.
282 got_mod_index_entry(Symbol_table* symtab, Layout* layout,
283 Sized_relobj<size, big_endian>* object);
285 // Return the gsym for "__tls_get_addr". Cache if not already
288 tls_get_addr_sym(Symbol_table* symtab)
290 if (!this->tls_get_addr_sym_)
291 this->tls_get_addr_sym_ = symtab->lookup("__tls_get_addr", NULL);
292 gold_assert(this->tls_get_addr_sym_);
293 return this->tls_get_addr_sym_;
296 // Get the PLT section.
297 const Output_data_plt_sparc<size, big_endian>*
300 gold_assert(this->plt_ != NULL);
304 // Get the dynamic reloc section, creating it if necessary.
306 rela_dyn_section(Layout*);
308 // Return true if the symbol may need a COPY relocation.
309 // References from an executable object to non-function symbols
310 // defined in a dynamic object may need a COPY relocation.
312 may_need_copy_reloc(Symbol* gsym)
314 return (!parameters->options().shared()
315 && gsym->is_from_dynobj()
316 && gsym->type() != elfcpp::STT_FUNC);
319 // Copy a relocation against a global symbol.
321 copy_reloc(Symbol_table* symtab, Layout* layout,
322 Sized_relobj<size, big_endian>* object,
323 unsigned int shndx, Output_section* output_section,
324 Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc)
326 this->copy_relocs_.copy_reloc(symtab, layout,
327 symtab->get_sized_symbol<size>(sym),
328 object, shndx, output_section,
329 reloc, this->rela_dyn_section(layout));
332 // Information about this specific target which we pass to the
333 // general Target structure.
334 static Target::Target_info sparc_info;
336 // The types of GOT entries needed for this platform.
339 GOT_TYPE_STANDARD = 0, // GOT entry for a regular symbol
340 GOT_TYPE_TLS_OFFSET = 1, // GOT entry for TLS offset
341 GOT_TYPE_TLS_PAIR = 2, // GOT entry for TLS module/offset pair
345 Output_data_got<size, big_endian>* got_;
347 Output_data_plt_sparc<size, big_endian>* plt_;
348 // The dynamic reloc section.
349 Reloc_section* rela_dyn_;
350 // Relocs saved to avoid a COPY reloc.
351 Copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_;
352 // Space for variables copied with a COPY reloc.
353 Output_data_space* dynbss_;
354 // Offset of the GOT entry for the TLS module index;
355 unsigned int got_mod_index_offset_;
356 // Cached pointer to __tls_get_addr symbol
357 Symbol* tls_get_addr_sym_;
361 Target::Target_info Target_sparc<32, true>::sparc_info =
364 true, // is_big_endian
365 elfcpp::EM_SPARC, // machine_code
366 false, // has_make_symbol
367 false, // has_resolve
368 false, // has_code_fill
369 true, // is_default_stack_executable
371 "/usr/lib/ld.so.1", // dynamic_linker
372 0x00010000, // default_text_segment_address
373 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
374 8 * 1024, // common_pagesize (overridable by -z common-page-size)
375 elfcpp::SHN_UNDEF, // small_common_shndx
376 elfcpp::SHN_UNDEF, // large_common_shndx
377 0, // small_common_section_flags
378 0 // large_common_section_flags
382 Target::Target_info Target_sparc<64, true>::sparc_info =
385 true, // is_big_endian
386 elfcpp::EM_SPARCV9, // machine_code
387 false, // has_make_symbol
388 false, // has_resolve
389 false, // has_code_fill
390 true, // is_default_stack_executable
392 "/usr/lib/sparcv9/ld.so.1", // dynamic_linker
393 0x100000, // default_text_segment_address
394 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
395 8 * 1024, // common_pagesize (overridable by -z common-page-size)
396 elfcpp::SHN_UNDEF, // small_common_shndx
397 elfcpp::SHN_UNDEF, // large_common_shndx
398 0, // small_common_section_flags
399 0 // large_common_section_flags
402 // We have to take care here, even when operating in little-endian
403 // mode, sparc instructions are still big endian.
404 template<int size, bool big_endian>
405 class Sparc_relocate_functions
408 // Do a simple relocation with the addend in the relocation.
409 template<int valsize>
411 rela(unsigned char* view,
412 unsigned int right_shift,
413 typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
414 typename elfcpp::Swap<size, big_endian>::Valtype value,
415 typename elfcpp::Swap<size, big_endian>::Valtype addend)
417 typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
418 Valtype* wv = reinterpret_cast<Valtype*>(view);
419 Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
420 Valtype reloc = ((value + addend) >> right_shift);
425 elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
428 // Do a simple relocation using a symbol value with the addend in
430 template<int valsize>
432 rela(unsigned char* view,
433 unsigned int right_shift,
434 typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
435 const Sized_relobj<size, big_endian>* object,
436 const Symbol_value<size>* psymval,
437 typename elfcpp::Swap<valsize, big_endian>::Valtype addend)
439 typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
440 Valtype* wv = reinterpret_cast<Valtype*>(view);
441 Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
442 Valtype reloc = (psymval->value(object, addend) >> right_shift);
447 elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
450 // Do a simple relocation using a symbol value with the addend in
451 // the relocation, unaligned.
452 template<int valsize>
454 rela_ua(unsigned char* view,
455 unsigned int right_shift, elfcpp::Elf_Xword dst_mask,
456 const Sized_relobj<size, big_endian>* object,
457 const Symbol_value<size>* psymval,
458 typename elfcpp::Swap<size, big_endian>::Valtype addend)
460 typedef typename elfcpp::Swap_unaligned<valsize,
461 big_endian>::Valtype Valtype;
462 unsigned char* wv = view;
463 Valtype val = elfcpp::Swap_unaligned<valsize, big_endian>::readval(wv);
464 Valtype reloc = (psymval->value(object, addend) >> right_shift);
469 elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, val | reloc);
472 // Do a simple PC relative relocation with a Symbol_value with the
473 // addend in the relocation.
474 template<int valsize>
476 pcrela(unsigned char* view,
477 unsigned int right_shift,
478 typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
479 const Sized_relobj<size, big_endian>* object,
480 const Symbol_value<size>* psymval,
481 typename elfcpp::Swap<size, big_endian>::Valtype addend,
482 typename elfcpp::Elf_types<size>::Elf_Addr address)
484 typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
485 Valtype* wv = reinterpret_cast<Valtype*>(view);
486 Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
487 Valtype reloc = ((psymval->value(object, addend) - address)
493 elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
496 template<int valsize>
498 pcrela_unaligned(unsigned char* view,
499 const Sized_relobj<size, big_endian>* object,
500 const Symbol_value<size>* psymval,
501 typename elfcpp::Swap<size, big_endian>::Valtype addend,
502 typename elfcpp::Elf_types<size>::Elf_Addr address)
504 typedef typename elfcpp::Swap_unaligned<valsize,
505 big_endian>::Valtype Valtype;
506 unsigned char* wv = view;
507 Valtype reloc = (psymval->value(object, addend) - address);
509 elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, reloc);
512 typedef Sparc_relocate_functions<size, big_endian> This;
513 typedef Sparc_relocate_functions<size, true> This_insn;
516 // R_SPARC_WDISP30: (Symbol + Addend - Address) >> 2
518 wdisp30(unsigned char* view,
519 const Sized_relobj<size, big_endian>* object,
520 const Symbol_value<size>* psymval,
521 typename elfcpp::Elf_types<size>::Elf_Addr addend,
522 typename elfcpp::Elf_types<size>::Elf_Addr address)
524 This_insn::template pcrela<32>(view, 2, 0x3fffffff, object,
525 psymval, addend, address);
528 // R_SPARC_WDISP22: (Symbol + Addend - Address) >> 2
530 wdisp22(unsigned char* view,
531 const Sized_relobj<size, big_endian>* object,
532 const Symbol_value<size>* psymval,
533 typename elfcpp::Elf_types<size>::Elf_Addr addend,
534 typename elfcpp::Elf_types<size>::Elf_Addr address)
536 This_insn::template pcrela<32>(view, 2, 0x003fffff, object,
537 psymval, addend, address);
540 // R_SPARC_WDISP19: (Symbol + Addend - Address) >> 2
542 wdisp19(unsigned char* view,
543 const Sized_relobj<size, big_endian>* object,
544 const Symbol_value<size>* psymval,
545 typename elfcpp::Elf_types<size>::Elf_Addr addend,
546 typename elfcpp::Elf_types<size>::Elf_Addr address)
548 This_insn::template pcrela<32>(view, 2, 0x0007ffff, object,
549 psymval, addend, address);
552 // R_SPARC_WDISP16: (Symbol + Addend - Address) >> 2
554 wdisp16(unsigned char* view,
555 const Sized_relobj<size, big_endian>* object,
556 const Symbol_value<size>* psymval,
557 typename elfcpp::Elf_types<size>::Elf_Addr addend,
558 typename elfcpp::Elf_types<size>::Elf_Addr address)
560 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
561 Valtype* wv = reinterpret_cast<Valtype*>(view);
562 Valtype val = elfcpp::Swap<32, true>::readval(wv);
563 Valtype reloc = ((psymval->value(object, addend) - address)
566 // The relocation value is split between the low 14 bits,
568 val &= ~((0x3 << 20) | 0x3fff);
569 reloc = (((reloc & 0xc000) << (20 - 14))
570 | (reloc & 0x3ffff));
572 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
575 // R_SPARC_PC22: (Symbol + Addend - Address) >> 10
577 pc22(unsigned char* view,
578 const Sized_relobj<size, big_endian>* object,
579 const Symbol_value<size>* psymval,
580 typename elfcpp::Elf_types<size>::Elf_Addr addend,
581 typename elfcpp::Elf_types<size>::Elf_Addr address)
583 This_insn::template pcrela<32>(view, 10, 0x003fffff, object,
584 psymval, addend, address);
587 // R_SPARC_PC10: (Symbol + Addend - Address) & 0x3ff
589 pc10(unsigned char* view,
590 const Sized_relobj<size, big_endian>* object,
591 const Symbol_value<size>* psymval,
592 typename elfcpp::Elf_types<size>::Elf_Addr addend,
593 typename elfcpp::Elf_types<size>::Elf_Addr address)
595 This_insn::template pcrela<32>(view, 0, 0x000003ff, object,
596 psymval, addend, address);
599 // R_SPARC_HI22: (Symbol + Addend) >> 10
601 hi22(unsigned char* view,
602 typename elfcpp::Elf_types<size>::Elf_Addr value,
603 typename elfcpp::Elf_types<size>::Elf_Addr addend)
605 This_insn::template rela<32>(view, 10, 0x003fffff, value, addend);
608 // R_SPARC_HI22: (Symbol + Addend) >> 10
610 hi22(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)
615 This_insn::template rela<32>(view, 10, 0x003fffff, object, psymval, addend);
618 // R_SPARC_PCPLT22: (Symbol + Addend - Address) >> 10
620 pcplt22(unsigned char* view,
621 const Sized_relobj<size, big_endian>* object,
622 const Symbol_value<size>* psymval,
623 typename elfcpp::Elf_types<size>::Elf_Addr addend,
624 typename elfcpp::Elf_types<size>::Elf_Addr address)
626 This_insn::template pcrela<32>(view, 10, 0x003fffff, object,
627 psymval, addend, address);
630 // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
632 lo10(unsigned char* view,
633 typename elfcpp::Elf_types<size>::Elf_Addr value,
634 typename elfcpp::Elf_types<size>::Elf_Addr addend)
636 This_insn::template rela<32>(view, 0, 0x000003ff, value, addend);
639 // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
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)
646 This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend);
649 // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
651 lo10(unsigned char* view,
652 const Sized_relobj<size, big_endian>* object,
653 const Symbol_value<size>* psymval,
654 typename elfcpp::Elf_types<size>::Elf_Addr addend,
655 typename elfcpp::Elf_types<size>::Elf_Addr address)
657 This_insn::template pcrela<32>(view, 0, 0x000003ff, object,
658 psymval, addend, address);
661 // R_SPARC_OLO10: ((Symbol + Addend) & 0x3ff) + Addend2
663 olo10(unsigned char* view,
664 const Sized_relobj<size, big_endian>* object,
665 const Symbol_value<size>* psymval,
666 typename elfcpp::Elf_types<size>::Elf_Addr addend,
667 typename elfcpp::Elf_types<size>::Elf_Addr addend2)
669 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
670 Valtype* wv = reinterpret_cast<Valtype*>(view);
671 Valtype val = elfcpp::Swap<32, true>::readval(wv);
672 Valtype reloc = psymval->value(object, addend);
679 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
682 // R_SPARC_22: (Symbol + Addend)
684 rela32_22(unsigned char* view,
685 const Sized_relobj<size, big_endian>* object,
686 const Symbol_value<size>* psymval,
687 typename elfcpp::Elf_types<size>::Elf_Addr addend)
689 This_insn::template rela<32>(view, 0, 0x003fffff, object, psymval, addend);
692 // R_SPARC_13: (Symbol + Addend)
694 rela32_13(unsigned char* view,
695 typename elfcpp::Elf_types<size>::Elf_Addr value,
696 typename elfcpp::Elf_types<size>::Elf_Addr addend)
698 This_insn::template rela<32>(view, 0, 0x00001fff, value, addend);
701 // R_SPARC_13: (Symbol + Addend)
703 rela32_13(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)
708 This_insn::template rela<32>(view, 0, 0x00001fff, object, psymval, addend);
711 // R_SPARC_UA16: (Symbol + Addend)
713 ua16(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)
718 This::template rela_ua<16>(view, 0, 0xffff, object, psymval, addend);
721 // R_SPARC_UA32: (Symbol + Addend)
723 ua32(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)
728 This::template rela_ua<32>(view, 0, 0xffffffff, object, psymval, addend);
731 // R_SPARC_UA64: (Symbol + Addend)
733 ua64(unsigned char* view,
734 const Sized_relobj<size, big_endian>* object,
735 const Symbol_value<size>* psymval,
736 typename elfcpp::Elf_types<size>::Elf_Addr addend)
738 This::template rela_ua<64>(view, 0, ~(elfcpp::Elf_Xword) 0,
739 object, psymval, addend);
742 // R_SPARC_DISP8: (Symbol + Addend - Address)
744 disp8(unsigned char* view,
745 const Sized_relobj<size, big_endian>* object,
746 const Symbol_value<size>* psymval,
747 typename elfcpp::Elf_types<size>::Elf_Addr addend,
748 typename elfcpp::Elf_types<size>::Elf_Addr address)
750 This::template pcrela_unaligned<8>(view, object, psymval,
754 // R_SPARC_DISP16: (Symbol + Addend - Address)
756 disp16(unsigned char* view,
757 const Sized_relobj<size, big_endian>* object,
758 const Symbol_value<size>* psymval,
759 typename elfcpp::Elf_types<size>::Elf_Addr addend,
760 typename elfcpp::Elf_types<size>::Elf_Addr address)
762 This::template pcrela_unaligned<16>(view, object, psymval,
766 // R_SPARC_DISP32: (Symbol + Addend - Address)
768 disp32(unsigned char* view,
769 const Sized_relobj<size, big_endian>* object,
770 const Symbol_value<size>* psymval,
771 typename elfcpp::Elf_types<size>::Elf_Addr addend,
772 typename elfcpp::Elf_types<size>::Elf_Addr address)
774 This::template pcrela_unaligned<32>(view, object, psymval,
778 // R_SPARC_DISP64: (Symbol + Addend - Address)
780 disp64(unsigned char* view,
781 const Sized_relobj<size, big_endian>* object,
782 const Symbol_value<size>* psymval,
783 elfcpp::Elf_Xword addend,
784 typename elfcpp::Elf_types<size>::Elf_Addr address)
786 This::template pcrela_unaligned<64>(view, object, psymval,
790 // R_SPARC_H44: (Symbol + Addend) >> 22
792 h44(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)
797 This_insn::template rela<32>(view, 22, 0x003fffff, object, psymval, addend);
800 // R_SPARC_M44: ((Symbol + Addend) >> 12) & 0x3ff
802 m44(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)
807 This_insn::template rela<32>(view, 12, 0x000003ff, object, psymval, addend);
810 // R_SPARC_L44: (Symbol + Addend) & 0xfff
812 l44(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)
817 This_insn::template rela<32>(view, 0, 0x00000fff, object, psymval, addend);
820 // R_SPARC_HH22: (Symbol + Addend) >> 42
822 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)
827 This_insn::template rela<32>(view, 42, 0x003fffff, object, psymval, addend);
830 // R_SPARC_PC_HH22: (Symbol + Addend - Address) >> 42
832 pc_hh22(unsigned char* view,
833 const Sized_relobj<size, big_endian>* object,
834 const Symbol_value<size>* psymval,
835 typename elfcpp::Elf_types<size>::Elf_Addr addend,
836 typename elfcpp::Elf_types<size>::Elf_Addr address)
838 This_insn::template pcrela<32>(view, 42, 0x003fffff, object,
839 psymval, addend, address);
842 // R_SPARC_HM10: ((Symbol + Addend) >> 32) & 0x3ff
844 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)
849 This_insn::template rela<32>(view, 32, 0x000003ff, object, psymval, addend);
852 // R_SPARC_PC_HM10: ((Symbol + Addend - Address) >> 32) & 0x3ff
854 pc_hm10(unsigned char* view,
855 const Sized_relobj<size, big_endian>* object,
856 const Symbol_value<size>* psymval,
857 typename elfcpp::Elf_types<size>::Elf_Addr addend,
858 typename elfcpp::Elf_types<size>::Elf_Addr address)
860 This_insn::template pcrela<32>(view, 32, 0x000003ff, object,
861 psymval, addend, address);
864 // R_SPARC_11: (Symbol + Addend)
866 rela32_11(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)
871 This_insn::template rela<32>(view, 0, 0x000007ff, object, psymval, addend);
874 // R_SPARC_10: (Symbol + Addend)
876 rela32_10(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)
881 This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend);
884 // R_SPARC_7: (Symbol + Addend)
886 rela32_7(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)
891 This_insn::template rela<32>(view, 0, 0x0000007f, object, psymval, addend);
894 // R_SPARC_6: (Symbol + Addend)
896 rela32_6(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)
901 This_insn::template rela<32>(view, 0, 0x0000003f, object, psymval, addend);
904 // R_SPARC_5: (Symbol + Addend)
906 rela32_5(unsigned char* view,
907 const Sized_relobj<size, big_endian>* object,
908 const Symbol_value<size>* psymval,
909 typename elfcpp::Elf_types<size>::Elf_Addr addend)
911 This_insn::template rela<32>(view, 0, 0x0000001f, object, psymval, addend);
914 // R_SPARC_TLS_LDO_HIX22: @dtpoff(Symbol + Addend) >> 10
916 ldo_hix22(unsigned char* view,
917 typename elfcpp::Elf_types<size>::Elf_Addr value,
918 typename elfcpp::Elf_types<size>::Elf_Addr addend)
920 This_insn::hi22(view, value, addend);
923 // R_SPARC_TLS_LDO_LOX10: @dtpoff(Symbol + Addend) & 0x3ff
925 ldo_lox10(unsigned char* view,
926 typename elfcpp::Elf_types<size>::Elf_Addr value,
927 typename elfcpp::Elf_types<size>::Elf_Addr addend)
929 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
930 Valtype* wv = reinterpret_cast<Valtype*>(view);
931 Valtype val = elfcpp::Swap<32, true>::readval(wv);
932 Valtype reloc = (value + addend);
937 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
940 // R_SPARC_TLS_LE_HIX22: (@tpoff(Symbol + Addend) ^ 0xffffffffffffffff) >> 10
942 hix22(unsigned char* view,
943 typename elfcpp::Elf_types<size>::Elf_Addr value,
944 typename elfcpp::Elf_types<size>::Elf_Addr addend)
946 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
947 Valtype* wv = reinterpret_cast<Valtype*>(view);
948 Valtype val = elfcpp::Swap<32, true>::readval(wv);
949 Valtype reloc = (value + addend);
953 reloc ^= ~(Valtype)0;
958 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
961 // R_SPARC_HIX22: ((Symbol + Addend) ^ 0xffffffffffffffff) >> 10
963 hix22(unsigned char* view,
964 const Sized_relobj<size, big_endian>* object,
965 const Symbol_value<size>* psymval,
966 typename elfcpp::Elf_types<size>::Elf_Addr addend)
968 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
969 Valtype* wv = reinterpret_cast<Valtype*>(view);
970 Valtype val = elfcpp::Swap<32, true>::readval(wv);
971 Valtype reloc = psymval->value(object, addend);
975 reloc ^= ~(Valtype)0;
980 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
984 // R_SPARC_TLS_LE_LOX10: (@tpoff(Symbol + Addend) & 0x3ff) | 0x1c00
986 lox10(unsigned char* view,
987 typename elfcpp::Elf_types<size>::Elf_Addr value,
988 typename elfcpp::Elf_types<size>::Elf_Addr addend)
990 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
991 Valtype* wv = reinterpret_cast<Valtype*>(view);
992 Valtype val = elfcpp::Swap<32, true>::readval(wv);
993 Valtype reloc = (value + addend);
999 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
1002 // R_SPARC_LOX10: ((Symbol + Addend) & 0x3ff) | 0x1c00
1004 lox10(unsigned char* view,
1005 const Sized_relobj<size, big_endian>* object,
1006 const Symbol_value<size>* psymval,
1007 typename elfcpp::Elf_types<size>::Elf_Addr addend)
1009 typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
1010 Valtype* wv = reinterpret_cast<Valtype*>(view);
1011 Valtype val = elfcpp::Swap<32, true>::readval(wv);
1012 Valtype reloc = psymval->value(object, addend);
1018 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
1022 // Get the GOT section, creating it if necessary.
1024 template<int size, bool big_endian>
1025 Output_data_got<size, big_endian>*
1026 Target_sparc<size, big_endian>::got_section(Symbol_table* symtab,
1029 if (this->got_ == NULL)
1031 gold_assert(symtab != NULL && layout != NULL);
1033 this->got_ = new Output_data_got<size, big_endian>();
1036 os = layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS,
1038 | elfcpp::SHF_WRITE),
1042 // Define _GLOBAL_OFFSET_TABLE_ at the start of the .got section.
1043 symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL,
1045 0, 0, elfcpp::STT_OBJECT,
1047 elfcpp::STV_HIDDEN, 0,
1054 // Get the dynamic reloc section, creating it if necessary.
1056 template<int size, bool big_endian>
1057 typename Target_sparc<size, big_endian>::Reloc_section*
1058 Target_sparc<size, big_endian>::rela_dyn_section(Layout* layout)
1060 if (this->rela_dyn_ == NULL)
1062 gold_assert(layout != NULL);
1063 this->rela_dyn_ = new Reloc_section(parameters->options().combreloc());
1064 layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA,
1065 elfcpp::SHF_ALLOC, this->rela_dyn_);
1067 return this->rela_dyn_;
1070 // A class to handle the PLT data.
1072 template<int size, bool big_endian>
1073 class Output_data_plt_sparc : public Output_section_data
1076 typedef Output_data_reloc<elfcpp::SHT_RELA, true,
1077 size, big_endian> Reloc_section;
1079 Output_data_plt_sparc(Layout*);
1081 // Add an entry to the PLT.
1082 void add_entry(Symbol* gsym);
1084 // Return the .rela.plt section data.
1085 const Reloc_section* rel_plt() const
1091 void do_adjust_output_section(Output_section* os);
1093 // Write to a map file.
1095 do_print_to_mapfile(Mapfile* mapfile) const
1096 { mapfile->print_output_data(this, _("** PLT")); }
1099 // The size of an entry in the PLT.
1100 static const int base_plt_entry_size = (size == 32 ? 12 : 32);
1102 static const unsigned int plt_entries_per_block = 160;
1103 static const unsigned int plt_insn_chunk_size = 24;
1104 static const unsigned int plt_pointer_chunk_size = 8;
1105 static const unsigned int plt_block_size =
1106 (plt_entries_per_block
1107 * (plt_insn_chunk_size + plt_pointer_chunk_size));
1109 // Set the final size.
1111 set_final_data_size()
1113 unsigned int full_count = this->count_ + 4;
1114 unsigned int extra = (size == 32 ? 4 : 0);
1116 if (size == 32 || full_count < 32768)
1117 this->set_data_size((full_count * base_plt_entry_size) + extra);
1120 unsigned int ext_cnt = full_count - 32768;
1122 this->set_data_size((32768 * base_plt_entry_size)
1124 * (plt_insn_chunk_size
1125 + plt_pointer_chunk_size)));
1129 // Write out the PLT data.
1131 do_write(Output_file*);
1133 // The reloc section.
1134 Reloc_section* rel_;
1135 // The number of PLT entries.
1136 unsigned int count_;
1139 // Define the constants as required by C++ standard.
1141 template<int size, bool big_endian>
1142 const int Output_data_plt_sparc<size, big_endian>::base_plt_entry_size;
1144 template<int size, bool big_endian>
1146 Output_data_plt_sparc<size, big_endian>::plt_entries_per_block;
1148 template<int size, bool big_endian>
1149 const unsigned int Output_data_plt_sparc<size, big_endian>::plt_insn_chunk_size;
1151 template<int size, bool big_endian>
1153 Output_data_plt_sparc<size, big_endian>::plt_pointer_chunk_size;
1155 template<int size, bool big_endian>
1156 const unsigned int Output_data_plt_sparc<size, big_endian>::plt_block_size;
1158 // Create the PLT section. The ordinary .got section is an argument,
1159 // since we need to refer to the start.
1161 template<int size, bool big_endian>
1162 Output_data_plt_sparc<size, big_endian>::Output_data_plt_sparc(Layout* layout)
1163 : Output_section_data(size == 32 ? 4 : 8), count_(0)
1165 this->rel_ = new Reloc_section(false);
1166 layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA,
1167 elfcpp::SHF_ALLOC, this->rel_);
1170 template<int size, bool big_endian>
1172 Output_data_plt_sparc<size, big_endian>::do_adjust_output_section(Output_section* os)
1177 // Add an entry to the PLT.
1179 template<int size, bool big_endian>
1181 Output_data_plt_sparc<size, big_endian>::add_entry(Symbol* gsym)
1183 gold_assert(!gsym->has_plt_offset());
1185 unsigned int index = this->count_ + 4;
1186 section_offset_type plt_offset;
1188 if (size == 32 || index < 32768)
1189 plt_offset = index * base_plt_entry_size;
1192 unsigned int ext_index = index - 32768;
1194 plt_offset = (32768 * base_plt_entry_size)
1195 + ((ext_index / plt_entries_per_block)
1197 + ((ext_index % plt_entries_per_block)
1198 * plt_insn_chunk_size);
1201 gsym->set_plt_offset(plt_offset);
1205 // Every PLT entry needs a reloc.
1206 gsym->set_needs_dynsym_entry();
1207 this->rel_->add_global(gsym, elfcpp::R_SPARC_JMP_SLOT, this,
1210 // Note that we don't need to save the symbol. The contents of the
1211 // PLT are independent of which symbols are used. The symbols only
1212 // appear in the relocations.
1215 static const unsigned int sparc_nop = 0x01000000;
1216 static const unsigned int sparc_sethi_g1 = 0x03000000;
1217 static const unsigned int sparc_branch_always = 0x30800000;
1218 static const unsigned int sparc_branch_always_pt = 0x30680000;
1219 static const unsigned int sparc_mov = 0x80100000;
1220 static const unsigned int sparc_mov_g0_o0 = 0x90100000;
1221 static const unsigned int sparc_mov_o7_g5 = 0x8a10000f;
1222 static const unsigned int sparc_call_plus_8 = 0x40000002;
1223 static const unsigned int sparc_ldx_o7_imm_g1 = 0xc25be000;
1224 static const unsigned int sparc_jmpl_o7_g1_g1 = 0x83c3c001;
1225 static const unsigned int sparc_mov_g5_o7 = 0x9e100005;
1227 // Write out the PLT.
1229 template<int size, bool big_endian>
1231 Output_data_plt_sparc<size, big_endian>::do_write(Output_file* of)
1233 const off_t offset = this->offset();
1234 const section_size_type oview_size =
1235 convert_to_section_size_type(this->data_size());
1236 unsigned char* const oview = of->get_output_view(offset, oview_size);
1237 unsigned char* pov = oview;
1239 memset(pov, 0, base_plt_entry_size * 4);
1240 pov += base_plt_entry_size * 4;
1242 unsigned int plt_offset = base_plt_entry_size * 4;
1243 const unsigned int count = this->count_;
1249 limit = (count > 32768 ? 32768 : count);
1251 for (unsigned int i = 0; i < limit; ++i)
1253 elfcpp::Swap<32, true>::writeval(pov + 0x00,
1254 sparc_sethi_g1 + plt_offset);
1255 elfcpp::Swap<32, true>::writeval(pov + 0x04,
1256 sparc_branch_always_pt +
1257 (((base_plt_entry_size -
1258 (plt_offset + 4)) >> 2) &
1260 elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop);
1261 elfcpp::Swap<32, true>::writeval(pov + 0x0c, sparc_nop);
1262 elfcpp::Swap<32, true>::writeval(pov + 0x10, sparc_nop);
1263 elfcpp::Swap<32, true>::writeval(pov + 0x14, sparc_nop);
1264 elfcpp::Swap<32, true>::writeval(pov + 0x18, sparc_nop);
1265 elfcpp::Swap<32, true>::writeval(pov + 0x1c, sparc_nop);
1267 pov += base_plt_entry_size;
1268 plt_offset += base_plt_entry_size;
1273 unsigned int ext_cnt = count - 32768;
1274 unsigned int blks = ext_cnt / plt_entries_per_block;
1276 for (unsigned int i = 0; i < blks; ++i)
1278 unsigned int data_off = (plt_entries_per_block
1279 * plt_insn_chunk_size) - 4;
1281 for (unsigned int j = 0; j < plt_entries_per_block; ++j)
1283 elfcpp::Swap<32, true>::writeval(pov + 0x00,
1285 elfcpp::Swap<32, true>::writeval(pov + 0x04,
1287 elfcpp::Swap<32, true>::writeval(pov + 0x08,
1289 elfcpp::Swap<32, true>::writeval(pov + 0x0c,
1290 sparc_ldx_o7_imm_g1 +
1291 (data_off & 0x1fff));
1292 elfcpp::Swap<32, true>::writeval(pov + 0x10,
1293 sparc_jmpl_o7_g1_g1);
1294 elfcpp::Swap<32, true>::writeval(pov + 0x14,
1297 elfcpp::Swap<64, big_endian>::writeval(
1298 pov + 0x4 + data_off,
1299 (elfcpp::Elf_Xword) (oview - (pov + 0x04)));
1301 pov += plt_insn_chunk_size;
1306 unsigned int sub_blk_cnt = ext_cnt % plt_entries_per_block;
1307 for (unsigned int i = 0; i < sub_blk_cnt; ++i)
1309 unsigned int data_off = (sub_blk_cnt
1310 * plt_insn_chunk_size) - 4;
1312 for (unsigned int j = 0; j < plt_entries_per_block; ++j)
1314 elfcpp::Swap<32, true>::writeval(pov + 0x00,
1316 elfcpp::Swap<32, true>::writeval(pov + 0x04,
1318 elfcpp::Swap<32, true>::writeval(pov + 0x08,
1320 elfcpp::Swap<32, true>::writeval(pov + 0x0c,
1321 sparc_ldx_o7_imm_g1 +
1322 (data_off & 0x1fff));
1323 elfcpp::Swap<32, true>::writeval(pov + 0x10,
1324 sparc_jmpl_o7_g1_g1);
1325 elfcpp::Swap<32, true>::writeval(pov + 0x14,
1328 elfcpp::Swap<64, big_endian>::writeval(
1329 pov + 0x4 + data_off,
1330 (elfcpp::Elf_Xword) (oview - (pov + 0x04)));
1332 pov += plt_insn_chunk_size;
1340 for (unsigned int i = 0; i < count; ++i)
1342 elfcpp::Swap<32, true>::writeval(pov + 0x00,
1343 sparc_sethi_g1 + plt_offset);
1344 elfcpp::Swap<32, true>::writeval(pov + 0x04,
1345 sparc_branch_always +
1346 (((- (plt_offset + 4)) >> 2) &
1348 elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop);
1350 pov += base_plt_entry_size;
1351 plt_offset += base_plt_entry_size;
1354 elfcpp::Swap<32, true>::writeval(pov, sparc_nop);
1358 gold_assert(static_cast<section_size_type>(pov - oview) == oview_size);
1360 of->write_output_view(offset, oview_size, oview);
1363 // Create a PLT entry for a global symbol.
1365 template<int size, bool big_endian>
1367 Target_sparc<size, big_endian>::make_plt_entry(Symbol_table* symtab,
1371 if (gsym->has_plt_offset())
1374 if (this->plt_ == NULL)
1376 // Create the GOT sections first.
1377 this->got_section(symtab, layout);
1379 this->plt_ = new Output_data_plt_sparc<size, big_endian>(layout);
1380 layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS,
1382 | elfcpp::SHF_EXECINSTR
1383 | elfcpp::SHF_WRITE),
1386 // Define _PROCEDURE_LINKAGE_TABLE_ at the start of the .plt section.
1387 symtab->define_in_output_data("_PROCEDURE_LINKAGE_TABLE_", NULL,
1389 0, 0, elfcpp::STT_OBJECT,
1391 elfcpp::STV_HIDDEN, 0,
1395 this->plt_->add_entry(gsym);
1398 // Create a GOT entry for the TLS module index.
1400 template<int size, bool big_endian>
1402 Target_sparc<size, big_endian>::got_mod_index_entry(Symbol_table* symtab,
1404 Sized_relobj<size, big_endian>* object)
1406 if (this->got_mod_index_offset_ == -1U)
1408 gold_assert(symtab != NULL && layout != NULL && object != NULL);
1409 Reloc_section* rela_dyn = this->rela_dyn_section(layout);
1410 Output_data_got<size, big_endian>* got;
1411 unsigned int got_offset;
1413 got = this->got_section(symtab, layout);
1414 got_offset = got->add_constant(0);
1415 rela_dyn->add_local(object, 0,
1417 elfcpp::R_SPARC_TLS_DTPMOD64 :
1418 elfcpp::R_SPARC_TLS_DTPMOD32), got,
1420 got->add_constant(0);
1421 this->got_mod_index_offset_ = got_offset;
1423 return this->got_mod_index_offset_;
1426 // Optimize the TLS relocation type based on what we know about the
1427 // symbol. IS_FINAL is true if the final address of this symbol is
1428 // known at link time.
1430 static tls::Tls_optimization
1431 optimize_tls_reloc(bool is_final, int r_type)
1433 // If we are generating a shared library, then we can't do anything
1435 if (parameters->options().shared())
1436 return tls::TLSOPT_NONE;
1440 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1441 case elfcpp::R_SPARC_TLS_GD_LO10:
1442 case elfcpp::R_SPARC_TLS_GD_ADD:
1443 case elfcpp::R_SPARC_TLS_GD_CALL:
1444 // These are General-Dynamic which permits fully general TLS
1445 // access. Since we know that we are generating an executable,
1446 // we can convert this to Initial-Exec. If we also know that
1447 // this is a local symbol, we can further switch to Local-Exec.
1449 return tls::TLSOPT_TO_LE;
1450 return tls::TLSOPT_TO_IE;
1452 case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic
1453 case elfcpp::R_SPARC_TLS_LDM_LO10:
1454 case elfcpp::R_SPARC_TLS_LDM_ADD:
1455 case elfcpp::R_SPARC_TLS_LDM_CALL:
1456 // This is Local-Dynamic, which refers to a local symbol in the
1457 // dynamic TLS block. Since we know that we generating an
1458 // executable, we can switch to Local-Exec.
1459 return tls::TLSOPT_TO_LE;
1461 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
1462 case elfcpp::R_SPARC_TLS_LDO_LOX10:
1463 case elfcpp::R_SPARC_TLS_LDO_ADD:
1464 // Another type of Local-Dynamic relocation.
1465 return tls::TLSOPT_TO_LE;
1467 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
1468 case elfcpp::R_SPARC_TLS_IE_LO10:
1469 case elfcpp::R_SPARC_TLS_IE_LD:
1470 case elfcpp::R_SPARC_TLS_IE_LDX:
1471 case elfcpp::R_SPARC_TLS_IE_ADD:
1472 // These are Initial-Exec relocs which get the thread offset
1473 // from the GOT. If we know that we are linking against the
1474 // local symbol, we can switch to Local-Exec, which links the
1475 // thread offset into the instruction.
1477 return tls::TLSOPT_TO_LE;
1478 return tls::TLSOPT_NONE;
1480 case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec
1481 case elfcpp::R_SPARC_TLS_LE_LOX10:
1482 // When we already have Local-Exec, there is nothing further we
1484 return tls::TLSOPT_NONE;
1491 // Generate a PLT entry slot for a call to __tls_get_addr
1492 template<int size, bool big_endian>
1494 Target_sparc<size, big_endian>::Scan::generate_tls_call(Symbol_table* symtab,
1496 Target_sparc<size, big_endian>* target)
1498 Symbol* gsym = target->tls_get_addr_sym(symtab);
1500 target->make_plt_entry(symtab, layout, gsym);
1503 // Report an unsupported relocation against a local symbol.
1505 template<int size, bool big_endian>
1507 Target_sparc<size, big_endian>::Scan::unsupported_reloc_local(
1508 Sized_relobj<size, big_endian>* object,
1509 unsigned int r_type)
1511 gold_error(_("%s: unsupported reloc %u against local symbol"),
1512 object->name().c_str(), r_type);
1515 // We are about to emit a dynamic relocation of type R_TYPE. If the
1516 // dynamic linker does not support it, issue an error.
1518 template<int size, bool big_endian>
1520 Target_sparc<size, big_endian>::Scan::check_non_pic(Relobj* object, unsigned int r_type)
1522 gold_assert(r_type != elfcpp::R_SPARC_NONE);
1528 // These are the relocation types supported by glibc for sparc 64-bit.
1529 case elfcpp::R_SPARC_RELATIVE:
1530 case elfcpp::R_SPARC_COPY:
1531 case elfcpp::R_SPARC_64:
1532 case elfcpp::R_SPARC_GLOB_DAT:
1533 case elfcpp::R_SPARC_JMP_SLOT:
1534 case elfcpp::R_SPARC_TLS_DTPMOD64:
1535 case elfcpp::R_SPARC_TLS_DTPOFF64:
1536 case elfcpp::R_SPARC_TLS_TPOFF64:
1537 case elfcpp::R_SPARC_TLS_LE_HIX22:
1538 case elfcpp::R_SPARC_TLS_LE_LOX10:
1539 case elfcpp::R_SPARC_8:
1540 case elfcpp::R_SPARC_16:
1541 case elfcpp::R_SPARC_DISP8:
1542 case elfcpp::R_SPARC_DISP16:
1543 case elfcpp::R_SPARC_DISP32:
1544 case elfcpp::R_SPARC_WDISP30:
1545 case elfcpp::R_SPARC_LO10:
1546 case elfcpp::R_SPARC_HI22:
1547 case elfcpp::R_SPARC_OLO10:
1548 case elfcpp::R_SPARC_H44:
1549 case elfcpp::R_SPARC_M44:
1550 case elfcpp::R_SPARC_L44:
1551 case elfcpp::R_SPARC_HH22:
1552 case elfcpp::R_SPARC_HM10:
1553 case elfcpp::R_SPARC_LM22:
1554 case elfcpp::R_SPARC_UA16:
1555 case elfcpp::R_SPARC_UA32:
1556 case elfcpp::R_SPARC_UA64:
1567 // These are the relocation types supported by glibc for sparc 32-bit.
1568 case elfcpp::R_SPARC_RELATIVE:
1569 case elfcpp::R_SPARC_COPY:
1570 case elfcpp::R_SPARC_GLOB_DAT:
1571 case elfcpp::R_SPARC_32:
1572 case elfcpp::R_SPARC_JMP_SLOT:
1573 case elfcpp::R_SPARC_TLS_DTPMOD32:
1574 case elfcpp::R_SPARC_TLS_DTPOFF32:
1575 case elfcpp::R_SPARC_TLS_TPOFF32:
1576 case elfcpp::R_SPARC_TLS_LE_HIX22:
1577 case elfcpp::R_SPARC_TLS_LE_LOX10:
1578 case elfcpp::R_SPARC_8:
1579 case elfcpp::R_SPARC_16:
1580 case elfcpp::R_SPARC_DISP8:
1581 case elfcpp::R_SPARC_DISP16:
1582 case elfcpp::R_SPARC_DISP32:
1583 case elfcpp::R_SPARC_LO10:
1584 case elfcpp::R_SPARC_WDISP30:
1585 case elfcpp::R_SPARC_HI22:
1586 case elfcpp::R_SPARC_UA16:
1587 case elfcpp::R_SPARC_UA32:
1595 // This prevents us from issuing more than one error per reloc
1596 // section. But we can still wind up issuing more than one
1597 // error per object file.
1598 if (this->issued_non_pic_error_)
1600 gold_assert(parameters->options().output_is_position_independent());
1601 object->error(_("requires unsupported dynamic reloc; "
1602 "recompile with -fPIC"));
1603 this->issued_non_pic_error_ = true;
1607 // Scan a relocation for a local symbol.
1609 template<int size, bool big_endian>
1611 Target_sparc<size, big_endian>::Scan::local(
1612 const General_options&,
1613 Symbol_table* symtab,
1615 Target_sparc<size, big_endian>* target,
1616 Sized_relobj<size, big_endian>* object,
1617 unsigned int data_shndx,
1618 Output_section* output_section,
1619 const elfcpp::Rela<size, big_endian>& reloc,
1620 unsigned int r_type,
1621 const elfcpp::Sym<size, big_endian>& lsym)
1623 unsigned int orig_r_type = r_type;
1628 case elfcpp::R_SPARC_NONE:
1629 case elfcpp::R_SPARC_REGISTER:
1630 case elfcpp::R_SPARC_GNU_VTINHERIT:
1631 case elfcpp::R_SPARC_GNU_VTENTRY:
1634 case elfcpp::R_SPARC_64:
1635 case elfcpp::R_SPARC_32:
1636 // If building a shared library (or a position-independent
1637 // executable), we need to create a dynamic relocation for
1638 // this location. The relocation applied at link time will
1639 // apply the link-time value, so we flag the location with
1640 // an R_SPARC_RELATIVE relocation so the dynamic loader can
1641 // relocate it easily.
1642 if (parameters->options().output_is_position_independent())
1644 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1645 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1646 rela_dyn->add_local_relative(object, r_sym, elfcpp::R_SPARC_RELATIVE,
1647 output_section, data_shndx,
1648 reloc.get_r_offset(),
1649 reloc.get_r_addend());
1653 case elfcpp::R_SPARC_HIX22:
1654 case elfcpp::R_SPARC_LOX10:
1655 case elfcpp::R_SPARC_H44:
1656 case elfcpp::R_SPARC_M44:
1657 case elfcpp::R_SPARC_L44:
1658 case elfcpp::R_SPARC_HH22:
1659 case elfcpp::R_SPARC_HM10:
1660 case elfcpp::R_SPARC_LM22:
1661 case elfcpp::R_SPARC_UA64:
1662 case elfcpp::R_SPARC_UA32:
1663 case elfcpp::R_SPARC_UA16:
1664 case elfcpp::R_SPARC_HI22:
1665 case elfcpp::R_SPARC_LO10:
1666 case elfcpp::R_SPARC_OLO10:
1667 case elfcpp::R_SPARC_16:
1668 case elfcpp::R_SPARC_11:
1669 case elfcpp::R_SPARC_10:
1670 case elfcpp::R_SPARC_8:
1671 case elfcpp::R_SPARC_7:
1672 case elfcpp::R_SPARC_6:
1673 case elfcpp::R_SPARC_5:
1674 // If building a shared library (or a position-independent
1675 // executable), we need to create a dynamic relocation for
1677 if (parameters->options().output_is_position_independent())
1679 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1681 check_non_pic(object, r_type);
1682 if (lsym.get_st_type() != elfcpp::STT_SECTION)
1684 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1685 rela_dyn->add_local(object, r_sym, orig_r_type, output_section,
1686 data_shndx, reloc.get_r_offset(),
1687 reloc.get_r_addend());
1691 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1692 gold_assert(lsym.get_st_value() == 0);
1693 rela_dyn->add_local_relative(object, r_sym, orig_r_type,
1694 output_section, data_shndx,
1695 reloc.get_r_offset(),
1696 reloc.get_r_addend());
1701 case elfcpp::R_SPARC_WDISP30:
1702 case elfcpp::R_SPARC_WDISP22:
1703 case elfcpp::R_SPARC_WDISP19:
1704 case elfcpp::R_SPARC_WDISP16:
1705 case elfcpp::R_SPARC_DISP8:
1706 case elfcpp::R_SPARC_DISP16:
1707 case elfcpp::R_SPARC_DISP32:
1708 case elfcpp::R_SPARC_DISP64:
1709 case elfcpp::R_SPARC_PC10:
1710 case elfcpp::R_SPARC_PC22:
1713 case elfcpp::R_SPARC_GOT10:
1714 case elfcpp::R_SPARC_GOT13:
1715 case elfcpp::R_SPARC_GOT22:
1717 // The symbol requires a GOT entry.
1718 Output_data_got<size, big_endian>* got;
1721 got = target->got_section(symtab, layout);
1722 r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1724 // If we are generating a shared object, we need to add a
1725 // dynamic relocation for this symbol's GOT entry.
1726 if (parameters->options().output_is_position_independent())
1728 if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD))
1730 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1733 off = got->add_constant(0);
1734 object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off);
1735 rela_dyn->add_local_relative(object, r_sym,
1736 elfcpp::R_SPARC_RELATIVE,
1741 got->add_local(object, r_sym, GOT_TYPE_STANDARD);
1745 // These are initial TLS relocs, which are expected when
1747 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1748 case elfcpp::R_SPARC_TLS_GD_LO10:
1749 case elfcpp::R_SPARC_TLS_GD_ADD:
1750 case elfcpp::R_SPARC_TLS_GD_CALL:
1751 case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic
1752 case elfcpp::R_SPARC_TLS_LDM_LO10:
1753 case elfcpp::R_SPARC_TLS_LDM_ADD:
1754 case elfcpp::R_SPARC_TLS_LDM_CALL:
1755 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
1756 case elfcpp::R_SPARC_TLS_LDO_LOX10:
1757 case elfcpp::R_SPARC_TLS_LDO_ADD:
1758 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
1759 case elfcpp::R_SPARC_TLS_IE_LO10:
1760 case elfcpp::R_SPARC_TLS_IE_LD:
1761 case elfcpp::R_SPARC_TLS_IE_LDX:
1762 case elfcpp::R_SPARC_TLS_IE_ADD:
1763 case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec
1764 case elfcpp::R_SPARC_TLS_LE_LOX10:
1766 bool output_is_shared = parameters->options().shared();
1767 const tls::Tls_optimization optimized_type
1768 = optimize_tls_reloc(!output_is_shared, r_type);
1771 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1772 case elfcpp::R_SPARC_TLS_GD_LO10:
1773 case elfcpp::R_SPARC_TLS_GD_ADD:
1774 case elfcpp::R_SPARC_TLS_GD_CALL:
1775 if (optimized_type == tls::TLSOPT_NONE)
1777 // Create a pair of GOT entries for the module index and
1778 // dtv-relative offset.
1779 Output_data_got<size, big_endian>* got
1780 = target->got_section(symtab, layout);
1781 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1782 unsigned int shndx = lsym.get_st_shndx();
1784 shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary);
1786 object->error(_("local symbol %u has bad shndx %u"),
1789 got->add_local_pair_with_rela(object, r_sym,
1790 lsym.get_st_shndx(),
1792 target->rela_dyn_section(layout),
1794 ? elfcpp::R_SPARC_TLS_DTPMOD64
1795 : elfcpp::R_SPARC_TLS_DTPMOD32),
1797 if (r_type == elfcpp::R_SPARC_TLS_GD_CALL)
1798 generate_tls_call(symtab, layout, target);
1800 else if (optimized_type != tls::TLSOPT_TO_LE)
1801 unsupported_reloc_local(object, r_type);
1804 case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic
1805 case elfcpp::R_SPARC_TLS_LDM_LO10:
1806 case elfcpp::R_SPARC_TLS_LDM_ADD:
1807 case elfcpp::R_SPARC_TLS_LDM_CALL:
1808 if (optimized_type == tls::TLSOPT_NONE)
1810 // Create a GOT entry for the module index.
1811 target->got_mod_index_entry(symtab, layout, object);
1813 if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL)
1814 generate_tls_call(symtab, layout, target);
1816 else if (optimized_type != tls::TLSOPT_TO_LE)
1817 unsupported_reloc_local(object, r_type);
1820 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
1821 case elfcpp::R_SPARC_TLS_LDO_LOX10:
1822 case elfcpp::R_SPARC_TLS_LDO_ADD:
1825 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
1826 case elfcpp::R_SPARC_TLS_IE_LO10:
1827 case elfcpp::R_SPARC_TLS_IE_LD:
1828 case elfcpp::R_SPARC_TLS_IE_LDX:
1829 case elfcpp::R_SPARC_TLS_IE_ADD:
1830 layout->set_has_static_tls();
1831 if (optimized_type == tls::TLSOPT_NONE)
1833 // Create a GOT entry for the tp-relative offset.
1834 Output_data_got<size, big_endian>* got
1835 = target->got_section(symtab, layout);
1836 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1838 if (!object->local_has_got_offset(r_sym, GOT_TYPE_TLS_OFFSET))
1840 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1841 unsigned int off = got->add_constant(0);
1843 object->set_local_got_offset(r_sym, GOT_TYPE_TLS_OFFSET,
1845 rela_dyn->add_local_relative(object, r_sym,
1847 elfcpp::R_SPARC_TLS_TPOFF64 :
1848 elfcpp::R_SPARC_TLS_TPOFF32),
1852 else if (optimized_type != tls::TLSOPT_TO_LE)
1853 unsupported_reloc_local(object, r_type);
1856 case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec
1857 case elfcpp::R_SPARC_TLS_LE_LOX10:
1858 layout->set_has_static_tls();
1859 if (output_is_shared)
1861 // We need to create a dynamic relocation.
1862 gold_assert(lsym.get_st_type() != elfcpp::STT_SECTION);
1863 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1864 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1865 rela_dyn->add_local_relative(object, r_sym, r_type,
1866 output_section, data_shndx,
1867 reloc.get_r_offset(), 0);
1874 // These are relocations which should only be seen by the
1875 // dynamic linker, and should never be seen here.
1876 case elfcpp::R_SPARC_COPY:
1877 case elfcpp::R_SPARC_GLOB_DAT:
1878 case elfcpp::R_SPARC_JMP_SLOT:
1879 case elfcpp::R_SPARC_RELATIVE:
1880 case elfcpp::R_SPARC_TLS_DTPMOD64:
1881 case elfcpp::R_SPARC_TLS_DTPMOD32:
1882 case elfcpp::R_SPARC_TLS_DTPOFF64:
1883 case elfcpp::R_SPARC_TLS_DTPOFF32:
1884 case elfcpp::R_SPARC_TLS_TPOFF64:
1885 case elfcpp::R_SPARC_TLS_TPOFF32:
1886 gold_error(_("%s: unexpected reloc %u in object file"),
1887 object->name().c_str(), r_type);
1891 unsupported_reloc_local(object, r_type);
1896 // Report an unsupported relocation against a global symbol.
1898 template<int size, bool big_endian>
1900 Target_sparc<size, big_endian>::Scan::unsupported_reloc_global(
1901 Sized_relobj<size, big_endian>* object,
1902 unsigned int r_type,
1905 gold_error(_("%s: unsupported reloc %u against global symbol %s"),
1906 object->name().c_str(), r_type, gsym->demangled_name().c_str());
1909 // Scan a relocation for a global symbol.
1911 template<int size, bool big_endian>
1913 Target_sparc<size, big_endian>::Scan::global(
1914 const General_options&,
1915 Symbol_table* symtab,
1917 Target_sparc<size, big_endian>* target,
1918 Sized_relobj<size, big_endian>* object,
1919 unsigned int data_shndx,
1920 Output_section* output_section,
1921 const elfcpp::Rela<size, big_endian>& reloc,
1922 unsigned int r_type,
1925 unsigned int orig_r_type = r_type;
1927 // A reference to _GLOBAL_OFFSET_TABLE_ implies that we need a got
1928 // section. We check here to avoid creating a dynamic reloc against
1929 // _GLOBAL_OFFSET_TABLE_.
1930 if (!target->has_got_section()
1931 && strcmp(gsym->name(), "_GLOBAL_OFFSET_TABLE_") == 0)
1932 target->got_section(symtab, layout);
1937 case elfcpp::R_SPARC_NONE:
1938 case elfcpp::R_SPARC_REGISTER:
1939 case elfcpp::R_SPARC_GNU_VTINHERIT:
1940 case elfcpp::R_SPARC_GNU_VTENTRY:
1943 case elfcpp::R_SPARC_PLT64:
1944 case elfcpp::R_SPARC_PLT32:
1945 case elfcpp::R_SPARC_HIPLT22:
1946 case elfcpp::R_SPARC_LOPLT10:
1947 case elfcpp::R_SPARC_PCPLT32:
1948 case elfcpp::R_SPARC_PCPLT22:
1949 case elfcpp::R_SPARC_PCPLT10:
1950 case elfcpp::R_SPARC_WPLT30:
1951 // If the symbol is fully resolved, this is just a PC32 reloc.
1952 // Otherwise we need a PLT entry.
1953 if (gsym->final_value_is_known())
1955 // If building a shared library, we can also skip the PLT entry
1956 // if the symbol is defined in the output file and is protected
1958 if (gsym->is_defined()
1959 && !gsym->is_from_dynobj()
1960 && !gsym->is_preemptible())
1962 target->make_plt_entry(symtab, layout, gsym);
1965 case elfcpp::R_SPARC_DISP8:
1966 case elfcpp::R_SPARC_DISP16:
1967 case elfcpp::R_SPARC_DISP32:
1968 case elfcpp::R_SPARC_DISP64:
1969 case elfcpp::R_SPARC_PC_HH22:
1970 case elfcpp::R_SPARC_PC_HM10:
1971 case elfcpp::R_SPARC_PC_LM22:
1972 case elfcpp::R_SPARC_PC10:
1973 case elfcpp::R_SPARC_PC22:
1974 case elfcpp::R_SPARC_WDISP30:
1975 case elfcpp::R_SPARC_WDISP22:
1976 case elfcpp::R_SPARC_WDISP19:
1977 case elfcpp::R_SPARC_WDISP16:
1979 if (gsym->needs_plt_entry())
1980 target->make_plt_entry(symtab, layout, gsym);
1981 // Make a dynamic relocation if necessary.
1982 int flags = Symbol::NON_PIC_REF;
1983 if (gsym->type() == elfcpp::STT_FUNC)
1984 flags |= Symbol::FUNCTION_CALL;
1985 if (gsym->needs_dynamic_reloc(flags))
1987 if (target->may_need_copy_reloc(gsym))
1989 target->copy_reloc(symtab, layout, object,
1990 data_shndx, output_section, gsym,
1995 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1996 check_non_pic(object, r_type);
1997 rela_dyn->add_global(gsym, orig_r_type, output_section, object,
1998 data_shndx, reloc.get_r_offset(),
1999 reloc.get_r_addend());
2005 case elfcpp::R_SPARC_UA64:
2006 case elfcpp::R_SPARC_64:
2007 case elfcpp::R_SPARC_HIX22:
2008 case elfcpp::R_SPARC_LOX10:
2009 case elfcpp::R_SPARC_H44:
2010 case elfcpp::R_SPARC_M44:
2011 case elfcpp::R_SPARC_L44:
2012 case elfcpp::R_SPARC_HH22:
2013 case elfcpp::R_SPARC_HM10:
2014 case elfcpp::R_SPARC_LM22:
2015 case elfcpp::R_SPARC_HI22:
2016 case elfcpp::R_SPARC_LO10:
2017 case elfcpp::R_SPARC_OLO10:
2018 case elfcpp::R_SPARC_UA32:
2019 case elfcpp::R_SPARC_32:
2020 case elfcpp::R_SPARC_UA16:
2021 case elfcpp::R_SPARC_16:
2022 case elfcpp::R_SPARC_11:
2023 case elfcpp::R_SPARC_10:
2024 case elfcpp::R_SPARC_8:
2025 case elfcpp::R_SPARC_7:
2026 case elfcpp::R_SPARC_6:
2027 case elfcpp::R_SPARC_5:
2029 // Make a PLT entry if necessary.
2030 if (gsym->needs_plt_entry())
2032 target->make_plt_entry(symtab, layout, gsym);
2033 // Since this is not a PC-relative relocation, we may be
2034 // taking the address of a function. In that case we need to
2035 // set the entry in the dynamic symbol table to the address of
2037 if (gsym->is_from_dynobj() && !parameters->options().shared())
2038 gsym->set_needs_dynsym_value();
2040 // Make a dynamic relocation if necessary.
2041 if (gsym->needs_dynamic_reloc(Symbol::ABSOLUTE_REF))
2043 if (target->may_need_copy_reloc(gsym))
2045 target->copy_reloc(symtab, layout, object,
2046 data_shndx, output_section, gsym, reloc);
2048 else if ((r_type == elfcpp::R_SPARC_32
2049 || r_type == elfcpp::R_SPARC_64)
2050 && gsym->can_use_relative_reloc(false))
2052 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2053 rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE,
2054 output_section, object,
2055 data_shndx, reloc.get_r_offset(),
2056 reloc.get_r_addend());
2060 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2062 check_non_pic(object, r_type);
2063 if (gsym->is_from_dynobj()
2064 || gsym->is_undefined()
2065 || gsym->is_preemptible())
2066 rela_dyn->add_global(gsym, orig_r_type, output_section,
2068 reloc.get_r_offset(),
2069 reloc.get_r_addend());
2071 rela_dyn->add_global_relative(gsym, orig_r_type,
2072 output_section, object,
2074 reloc.get_r_offset(),
2075 reloc.get_r_addend());
2081 case elfcpp::R_SPARC_GOT10:
2082 case elfcpp::R_SPARC_GOT13:
2083 case elfcpp::R_SPARC_GOT22:
2085 // The symbol requires a GOT entry.
2086 Output_data_got<size, big_endian>* got;
2088 got = target->got_section(symtab, layout);
2089 if (gsym->final_value_is_known())
2090 got->add_global(gsym, GOT_TYPE_STANDARD);
2093 // If this symbol is not fully resolved, we need to add a
2094 // dynamic relocation for it.
2095 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2096 if (gsym->is_from_dynobj()
2097 || gsym->is_undefined()
2098 || gsym->is_preemptible())
2099 got->add_global_with_rela(gsym, GOT_TYPE_STANDARD, rela_dyn,
2100 elfcpp::R_SPARC_GLOB_DAT);
2101 else if (!gsym->has_got_offset(GOT_TYPE_STANDARD))
2103 unsigned int off = got->add_constant(0);
2105 gsym->set_got_offset(GOT_TYPE_STANDARD, off);
2106 rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE,
2113 // These are initial tls relocs, which are expected when
2115 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2116 case elfcpp::R_SPARC_TLS_GD_LO10:
2117 case elfcpp::R_SPARC_TLS_GD_ADD:
2118 case elfcpp::R_SPARC_TLS_GD_CALL:
2119 case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic
2120 case elfcpp::R_SPARC_TLS_LDM_LO10:
2121 case elfcpp::R_SPARC_TLS_LDM_ADD:
2122 case elfcpp::R_SPARC_TLS_LDM_CALL:
2123 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
2124 case elfcpp::R_SPARC_TLS_LDO_LOX10:
2125 case elfcpp::R_SPARC_TLS_LDO_ADD:
2126 case elfcpp::R_SPARC_TLS_LE_HIX22:
2127 case elfcpp::R_SPARC_TLS_LE_LOX10:
2128 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
2129 case elfcpp::R_SPARC_TLS_IE_LO10:
2130 case elfcpp::R_SPARC_TLS_IE_LD:
2131 case elfcpp::R_SPARC_TLS_IE_LDX:
2132 case elfcpp::R_SPARC_TLS_IE_ADD:
2134 const bool is_final = gsym->final_value_is_known();
2135 const tls::Tls_optimization optimized_type
2136 = optimize_tls_reloc(is_final, r_type);
2139 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2140 case elfcpp::R_SPARC_TLS_GD_LO10:
2141 case elfcpp::R_SPARC_TLS_GD_ADD:
2142 case elfcpp::R_SPARC_TLS_GD_CALL:
2143 if (optimized_type == tls::TLSOPT_NONE)
2145 // Create a pair of GOT entries for the module index and
2146 // dtv-relative offset.
2147 Output_data_got<size, big_endian>* got
2148 = target->got_section(symtab, layout);
2149 got->add_global_pair_with_rela(gsym, GOT_TYPE_TLS_PAIR,
2150 target->rela_dyn_section(layout),
2152 elfcpp::R_SPARC_TLS_DTPMOD64 :
2153 elfcpp::R_SPARC_TLS_DTPMOD32),
2155 elfcpp::R_SPARC_TLS_DTPOFF64 :
2156 elfcpp::R_SPARC_TLS_DTPOFF32));
2158 // Emit R_SPARC_WPLT30 against "__tls_get_addr"
2159 if (r_type == elfcpp::R_SPARC_TLS_GD_CALL)
2160 generate_tls_call(symtab, layout, target);
2162 else if (optimized_type == tls::TLSOPT_TO_IE)
2164 // Create a GOT entry for the tp-relative offset.
2165 Output_data_got<size, big_endian>* got
2166 = target->got_section(symtab, layout);
2167 got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET,
2168 target->rela_dyn_section(layout),
2170 elfcpp::R_SPARC_TLS_TPOFF64 :
2171 elfcpp::R_SPARC_TLS_TPOFF32));
2173 else if (optimized_type != tls::TLSOPT_TO_LE)
2174 unsupported_reloc_global(object, r_type, gsym);
2177 case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic
2178 case elfcpp::R_SPARC_TLS_LDM_LO10:
2179 case elfcpp::R_SPARC_TLS_LDM_ADD:
2180 case elfcpp::R_SPARC_TLS_LDM_CALL:
2181 if (optimized_type == tls::TLSOPT_NONE)
2183 // Create a GOT entry for the module index.
2184 target->got_mod_index_entry(symtab, layout, object);
2186 if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL)
2187 generate_tls_call(symtab, layout, target);
2189 else if (optimized_type != tls::TLSOPT_TO_LE)
2190 unsupported_reloc_global(object, r_type, gsym);
2193 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
2194 case elfcpp::R_SPARC_TLS_LDO_LOX10:
2195 case elfcpp::R_SPARC_TLS_LDO_ADD:
2198 case elfcpp::R_SPARC_TLS_LE_HIX22:
2199 case elfcpp::R_SPARC_TLS_LE_LOX10:
2200 layout->set_has_static_tls();
2201 if (parameters->options().shared())
2203 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2204 rela_dyn->add_global_relative(gsym, orig_r_type,
2205 output_section, object,
2206 data_shndx, reloc.get_r_offset(),
2211 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
2212 case elfcpp::R_SPARC_TLS_IE_LO10:
2213 case elfcpp::R_SPARC_TLS_IE_LD:
2214 case elfcpp::R_SPARC_TLS_IE_LDX:
2215 case elfcpp::R_SPARC_TLS_IE_ADD:
2216 layout->set_has_static_tls();
2217 if (optimized_type == tls::TLSOPT_NONE)
2219 // Create a GOT entry for the tp-relative offset.
2220 Output_data_got<size, big_endian>* got
2221 = target->got_section(symtab, layout);
2222 got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET,
2223 target->rela_dyn_section(layout),
2225 elfcpp::R_SPARC_TLS_TPOFF64 :
2226 elfcpp::R_SPARC_TLS_TPOFF32));
2228 else if (optimized_type != tls::TLSOPT_TO_LE)
2229 unsupported_reloc_global(object, r_type, gsym);
2235 // These are relocations which should only be seen by the
2236 // dynamic linker, and should never be seen here.
2237 case elfcpp::R_SPARC_COPY:
2238 case elfcpp::R_SPARC_GLOB_DAT:
2239 case elfcpp::R_SPARC_JMP_SLOT:
2240 case elfcpp::R_SPARC_RELATIVE:
2241 case elfcpp::R_SPARC_TLS_DTPMOD64:
2242 case elfcpp::R_SPARC_TLS_DTPMOD32:
2243 case elfcpp::R_SPARC_TLS_DTPOFF64:
2244 case elfcpp::R_SPARC_TLS_DTPOFF32:
2245 case elfcpp::R_SPARC_TLS_TPOFF64:
2246 case elfcpp::R_SPARC_TLS_TPOFF32:
2247 gold_error(_("%s: unexpected reloc %u in object file"),
2248 object->name().c_str(), r_type);
2252 unsupported_reloc_global(object, r_type, gsym);
2257 // Process relocations for gc.
2259 template<int size, bool big_endian>
2261 Target_sparc<size, big_endian>::gc_process_relocs(
2262 const General_options& options,
2263 Symbol_table* symtab,
2265 Sized_relobj<size, big_endian>* object,
2266 unsigned int data_shndx,
2268 const unsigned char* prelocs,
2270 Output_section* output_section,
2271 bool needs_special_offset_handling,
2272 size_t local_symbol_count,
2273 const unsigned char* plocal_symbols)
2275 typedef Target_sparc<size, big_endian> Sparc;
2276 typedef typename Target_sparc<size, big_endian>::Scan Scan;
2278 gold::gc_process_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>(
2288 needs_special_offset_handling,
2293 // Scan relocations for a section.
2295 template<int size, bool big_endian>
2297 Target_sparc<size, big_endian>::scan_relocs(
2298 const General_options& options,
2299 Symbol_table* symtab,
2301 Sized_relobj<size, big_endian>* object,
2302 unsigned int data_shndx,
2303 unsigned int sh_type,
2304 const unsigned char* prelocs,
2306 Output_section* output_section,
2307 bool needs_special_offset_handling,
2308 size_t local_symbol_count,
2309 const unsigned char* plocal_symbols)
2311 typedef Target_sparc<size, big_endian> Sparc;
2312 typedef typename Target_sparc<size, big_endian>::Scan Scan;
2314 if (sh_type == elfcpp::SHT_REL)
2316 gold_error(_("%s: unsupported REL reloc section"),
2317 object->name().c_str());
2321 gold::scan_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>(
2331 needs_special_offset_handling,
2336 // Finalize the sections.
2338 template<int size, bool big_endian>
2340 Target_sparc<size, big_endian>::do_finalize_sections(Layout* layout)
2342 // Fill in some more dynamic tags.
2343 Output_data_dynamic* const odyn = layout->dynamic_data();
2346 if (this->plt_ != NULL)
2348 const Output_data* od = this->plt_->rel_plt();
2349 odyn->add_section_size(elfcpp::DT_PLTRELSZ, od);
2350 odyn->add_section_address(elfcpp::DT_JMPREL, od);
2351 odyn->add_constant(elfcpp::DT_PLTREL, elfcpp::DT_RELA);
2353 odyn->add_section_address(elfcpp::DT_PLTGOT, this->plt_);
2356 if (this->rela_dyn_ != NULL)
2358 const Output_data* od = this->rela_dyn_;
2359 odyn->add_section_address(elfcpp::DT_RELA, od);
2360 odyn->add_section_size(elfcpp::DT_RELASZ, od);
2361 odyn->add_constant(elfcpp::DT_RELAENT,
2362 elfcpp::Elf_sizes<size>::rela_size);
2365 if (!parameters->options().shared())
2367 // The value of the DT_DEBUG tag is filled in by the dynamic
2368 // linker at run time, and used by the debugger.
2369 odyn->add_constant(elfcpp::DT_DEBUG, 0);
2373 // Emit any relocs we saved in an attempt to avoid generating COPY
2375 if (this->copy_relocs_.any_saved_relocs())
2376 this->copy_relocs_.emit(this->rela_dyn_section(layout));
2379 // Perform a relocation.
2381 template<int size, bool big_endian>
2383 Target_sparc<size, big_endian>::Relocate::relocate(
2384 const Relocate_info<size, big_endian>* relinfo,
2385 Target_sparc* target,
2388 const elfcpp::Rela<size, big_endian>& rela,
2389 unsigned int r_type,
2390 const Sized_symbol<size>* gsym,
2391 const Symbol_value<size>* psymval,
2392 unsigned char* view,
2393 typename elfcpp::Elf_types<size>::Elf_Addr address,
2394 section_size_type view_size)
2398 if (this->ignore_gd_add_)
2400 if (r_type != elfcpp::R_SPARC_TLS_GD_ADD)
2401 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2402 _("missing expected TLS relocation"));
2405 this->ignore_gd_add_ = false;
2410 typedef Sparc_relocate_functions<size, big_endian> Reloc;
2412 // Pick the value to use for symbols defined in shared objects.
2413 Symbol_value<size> symval;
2415 && gsym->use_plt_offset(r_type == elfcpp::R_SPARC_DISP8
2416 || r_type == elfcpp::R_SPARC_DISP16
2417 || r_type == elfcpp::R_SPARC_DISP32
2418 || r_type == elfcpp::R_SPARC_DISP64
2419 || r_type == elfcpp::R_SPARC_PC_HH22
2420 || r_type == elfcpp::R_SPARC_PC_HM10
2421 || r_type == elfcpp::R_SPARC_PC_LM22
2422 || r_type == elfcpp::R_SPARC_PC10
2423 || r_type == elfcpp::R_SPARC_PC22
2424 || r_type == elfcpp::R_SPARC_WDISP30
2425 || r_type == elfcpp::R_SPARC_WDISP22
2426 || r_type == elfcpp::R_SPARC_WDISP19
2427 || r_type == elfcpp::R_SPARC_WDISP16))
2429 elfcpp::Elf_Xword value;
2431 value = target->plt_section()->address() + gsym->plt_offset();
2433 symval.set_output_value(value);
2438 const Sized_relobj<size, big_endian>* object = relinfo->object;
2439 const elfcpp::Elf_Xword addend = rela.get_r_addend();
2441 // Get the GOT offset if needed. Unlike i386 and x86_64, our GOT
2442 // pointer points to the beginning, not the end, of the table.
2443 // So we just use the plain offset.
2444 bool have_got_offset = false;
2445 unsigned int got_offset = 0;
2448 case elfcpp::R_SPARC_GOT10:
2449 case elfcpp::R_SPARC_GOT13:
2450 case elfcpp::R_SPARC_GOT22:
2453 gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD));
2454 got_offset = gsym->got_offset(GOT_TYPE_STANDARD);
2458 unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
2459 gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD));
2460 got_offset = object->local_got_offset(r_sym, GOT_TYPE_STANDARD);
2462 have_got_offset = true;
2471 case elfcpp::R_SPARC_NONE:
2472 case elfcpp::R_SPARC_REGISTER:
2473 case elfcpp::R_SPARC_GNU_VTINHERIT:
2474 case elfcpp::R_SPARC_GNU_VTENTRY:
2477 case elfcpp::R_SPARC_8:
2478 Relocate_functions<size, big_endian>::rela8(view, object,
2482 case elfcpp::R_SPARC_16:
2483 Relocate_functions<size, big_endian>::rela16(view, object,
2487 case elfcpp::R_SPARC_32:
2488 if (!parameters->options().output_is_position_independent())
2489 Relocate_functions<size, big_endian>::rela32(view, object,
2493 case elfcpp::R_SPARC_DISP8:
2494 Reloc::disp8(view, object, psymval, addend, address);
2497 case elfcpp::R_SPARC_DISP16:
2498 Reloc::disp16(view, object, psymval, addend, address);
2501 case elfcpp::R_SPARC_DISP32:
2502 Reloc::disp32(view, object, psymval, addend, address);
2505 case elfcpp::R_SPARC_DISP64:
2506 Reloc::disp64(view, object, psymval, addend, address);
2509 case elfcpp::R_SPARC_WDISP30:
2510 case elfcpp::R_SPARC_WPLT30:
2511 Reloc::wdisp30(view, object, psymval, addend, address);
2514 case elfcpp::R_SPARC_WDISP22:
2515 Reloc::wdisp22(view, object, psymval, addend, address);
2518 case elfcpp::R_SPARC_WDISP19:
2519 Reloc::wdisp19(view, object, psymval, addend, address);
2522 case elfcpp::R_SPARC_WDISP16:
2523 Reloc::wdisp16(view, object, psymval, addend, address);
2526 case elfcpp::R_SPARC_HI22:
2527 Reloc::hi22(view, object, psymval, addend);
2530 case elfcpp::R_SPARC_22:
2531 Reloc::rela32_22(view, object, psymval, addend);
2534 case elfcpp::R_SPARC_13:
2535 Reloc::rela32_13(view, object, psymval, addend);
2538 case elfcpp::R_SPARC_LO10:
2539 Reloc::lo10(view, object, psymval, addend);
2542 case elfcpp::R_SPARC_GOT10:
2543 Reloc::lo10(view, got_offset, addend);
2546 case elfcpp::R_SPARC_GOT13:
2547 Reloc::rela32_13(view, got_offset, addend);
2550 case elfcpp::R_SPARC_GOT22:
2551 Reloc::hi22(view, got_offset, addend);
2554 case elfcpp::R_SPARC_PC10:
2555 Reloc::pc10(view, object, psymval, addend, address);
2558 case elfcpp::R_SPARC_PC22:
2559 Reloc::pc22(view, object, psymval, addend, address);
2562 case elfcpp::R_SPARC_TLS_DTPOFF32:
2563 case elfcpp::R_SPARC_UA32:
2564 Reloc::ua32(view, object, psymval, addend);
2567 case elfcpp::R_SPARC_PLT64:
2568 Relocate_functions<size, big_endian>::rela64(view, object,
2572 case elfcpp::R_SPARC_PLT32:
2573 Relocate_functions<size, big_endian>::rela32(view, object,
2577 case elfcpp::R_SPARC_HIPLT22:
2578 Reloc::hi22(view, object, psymval, addend);
2581 case elfcpp::R_SPARC_LOPLT10:
2582 Reloc::lo10(view, object, psymval, addend);
2585 case elfcpp::R_SPARC_PCPLT32:
2586 Reloc::disp32(view, object, psymval, addend, address);
2589 case elfcpp::R_SPARC_PCPLT22:
2590 Reloc::pcplt22(view, object, psymval, addend, address);
2593 case elfcpp::R_SPARC_PCPLT10:
2594 Reloc::lo10(view, object, psymval, addend, address);
2597 case elfcpp::R_SPARC_64:
2598 if (!parameters->options().output_is_position_independent())
2599 Relocate_functions<size, big_endian>::rela64(view, object,
2603 case elfcpp::R_SPARC_OLO10:
2605 unsigned int addend2 = rela.get_r_info() & 0xffffffff;
2606 addend2 = ((addend2 >> 8) ^ 0x800000) - 0x800000;
2607 Reloc::olo10(view, object, psymval, addend, addend2);
2611 case elfcpp::R_SPARC_HH22:
2612 Reloc::hh22(view, object, psymval, addend);
2615 case elfcpp::R_SPARC_PC_HH22:
2616 Reloc::pc_hh22(view, object, psymval, addend, address);
2619 case elfcpp::R_SPARC_HM10:
2620 Reloc::hm10(view, object, psymval, addend);
2623 case elfcpp::R_SPARC_PC_HM10:
2624 Reloc::pc_hm10(view, object, psymval, addend, address);
2627 case elfcpp::R_SPARC_LM22:
2628 Reloc::hi22(view, object, psymval, addend);
2631 case elfcpp::R_SPARC_PC_LM22:
2632 Reloc::pcplt22(view, object, psymval, addend, address);
2635 case elfcpp::R_SPARC_11:
2636 Reloc::rela32_11(view, object, psymval, addend);
2639 case elfcpp::R_SPARC_10:
2640 Reloc::rela32_10(view, object, psymval, addend);
2643 case elfcpp::R_SPARC_7:
2644 Reloc::rela32_7(view, object, psymval, addend);
2647 case elfcpp::R_SPARC_6:
2648 Reloc::rela32_6(view, object, psymval, addend);
2651 case elfcpp::R_SPARC_5:
2652 Reloc::rela32_5(view, object, psymval, addend);
2655 case elfcpp::R_SPARC_HIX22:
2656 Reloc::hix22(view, object, psymval, addend);
2659 case elfcpp::R_SPARC_LOX10:
2660 Reloc::lox10(view, object, psymval, addend);
2663 case elfcpp::R_SPARC_H44:
2664 Reloc::h44(view, object, psymval, addend);
2667 case elfcpp::R_SPARC_M44:
2668 Reloc::m44(view, object, psymval, addend);
2671 case elfcpp::R_SPARC_L44:
2672 Reloc::l44(view, object, psymval, addend);
2675 case elfcpp::R_SPARC_TLS_DTPOFF64:
2676 case elfcpp::R_SPARC_UA64:
2677 Reloc::ua64(view, object, psymval, addend);
2680 case elfcpp::R_SPARC_UA16:
2681 Reloc::ua16(view, object, psymval, addend);
2684 case elfcpp::R_SPARC_TLS_GD_HI22:
2685 case elfcpp::R_SPARC_TLS_GD_LO10:
2686 case elfcpp::R_SPARC_TLS_GD_ADD:
2687 case elfcpp::R_SPARC_TLS_GD_CALL:
2688 case elfcpp::R_SPARC_TLS_LDM_HI22:
2689 case elfcpp::R_SPARC_TLS_LDM_LO10:
2690 case elfcpp::R_SPARC_TLS_LDM_ADD:
2691 case elfcpp::R_SPARC_TLS_LDM_CALL:
2692 case elfcpp::R_SPARC_TLS_LDO_HIX22:
2693 case elfcpp::R_SPARC_TLS_LDO_LOX10:
2694 case elfcpp::R_SPARC_TLS_LDO_ADD:
2695 case elfcpp::R_SPARC_TLS_IE_HI22:
2696 case elfcpp::R_SPARC_TLS_IE_LO10:
2697 case elfcpp::R_SPARC_TLS_IE_LD:
2698 case elfcpp::R_SPARC_TLS_IE_LDX:
2699 case elfcpp::R_SPARC_TLS_IE_ADD:
2700 case elfcpp::R_SPARC_TLS_LE_HIX22:
2701 case elfcpp::R_SPARC_TLS_LE_LOX10:
2702 this->relocate_tls(relinfo, target, relnum, rela,
2703 r_type, gsym, psymval, view,
2704 address, view_size);
2707 case elfcpp::R_SPARC_COPY:
2708 case elfcpp::R_SPARC_GLOB_DAT:
2709 case elfcpp::R_SPARC_JMP_SLOT:
2710 case elfcpp::R_SPARC_RELATIVE:
2711 // These are outstanding tls relocs, which are unexpected when
2713 case elfcpp::R_SPARC_TLS_DTPMOD64:
2714 case elfcpp::R_SPARC_TLS_DTPMOD32:
2715 case elfcpp::R_SPARC_TLS_TPOFF64:
2716 case elfcpp::R_SPARC_TLS_TPOFF32:
2717 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2718 _("unexpected reloc %u in object file"),
2723 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2724 _("unsupported reloc %u"),
2732 // Perform a TLS relocation.
2734 template<int size, bool big_endian>
2736 Target_sparc<size, big_endian>::Relocate::relocate_tls(
2737 const Relocate_info<size, big_endian>* relinfo,
2738 Target_sparc<size, big_endian>* target,
2740 const elfcpp::Rela<size, big_endian>& rela,
2741 unsigned int r_type,
2742 const Sized_symbol<size>* gsym,
2743 const Symbol_value<size>* psymval,
2744 unsigned char* view,
2745 typename elfcpp::Elf_types<size>::Elf_Addr address,
2748 Output_segment* tls_segment = relinfo->layout->tls_segment();
2749 typedef Sparc_relocate_functions<size, big_endian> Reloc;
2750 const Sized_relobj<size, big_endian>* object = relinfo->object;
2751 typedef typename elfcpp::Swap<32, true>::Valtype Insntype;
2753 const elfcpp::Elf_Xword addend = rela.get_r_addend();
2754 typename elfcpp::Elf_types<size>::Elf_Addr value = psymval->value(object, 0);
2756 const bool is_final =
2758 ? !parameters->options().output_is_position_independent()
2759 : gsym->final_value_is_known());
2760 const tls::Tls_optimization optimized_type
2761 = optimize_tls_reloc(is_final, r_type);
2765 case elfcpp::R_SPARC_TLS_GD_HI22:
2766 case elfcpp::R_SPARC_TLS_GD_LO10:
2767 case elfcpp::R_SPARC_TLS_GD_ADD:
2768 case elfcpp::R_SPARC_TLS_GD_CALL:
2769 if (optimized_type == tls::TLSOPT_TO_LE)
2771 Insntype* wv = reinterpret_cast<Insntype*>(view);
2774 value -= tls_segment->memsz();
2778 case elfcpp::R_SPARC_TLS_GD_HI22:
2779 // TLS_GD_HI22 --> TLS_LE_HIX22
2780 Reloc::hix22(view, value, addend);
2783 case elfcpp::R_SPARC_TLS_GD_LO10:
2784 // TLS_GD_LO10 --> TLS_LE_LOX10
2785 Reloc::lox10(view, value, addend);
2788 case elfcpp::R_SPARC_TLS_GD_ADD:
2789 // add %reg1, %reg2, %reg3 --> mov %g7, %reg2, %reg3
2790 val = elfcpp::Swap<32, true>::readval(wv);
2791 val = (val & ~0x7c000) | 0x1c000;
2792 elfcpp::Swap<32, true>::writeval(wv, val);
2794 case elfcpp::R_SPARC_TLS_GD_CALL:
2795 // call __tls_get_addr --> nop
2796 elfcpp::Swap<32, true>::writeval(wv, sparc_nop);
2803 unsigned int got_type = (optimized_type == tls::TLSOPT_TO_IE
2804 ? GOT_TYPE_TLS_OFFSET
2805 : GOT_TYPE_TLS_PAIR);
2808 gold_assert(gsym->has_got_offset(got_type));
2809 value = gsym->got_offset(got_type);
2813 unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
2814 gold_assert(object->local_has_got_offset(r_sym, got_type));
2815 value = object->local_got_offset(r_sym, got_type);
2817 if (optimized_type == tls::TLSOPT_TO_IE)
2819 Insntype* wv = reinterpret_cast<Insntype*>(view);
2824 case elfcpp::R_SPARC_TLS_GD_HI22:
2825 // TLS_GD_HI22 --> TLS_IE_HI22
2826 Reloc::hi22(view, value, addend);
2829 case elfcpp::R_SPARC_TLS_GD_LO10:
2830 // TLS_GD_LO10 --> TLS_IE_LO10
2831 Reloc::lo10(view, value, addend);
2834 case elfcpp::R_SPARC_TLS_GD_ADD:
2835 // add %reg1, %reg2, %reg3 --> ld [%reg1 + %reg2], %reg3
2836 val = elfcpp::Swap<32, true>::readval(wv);
2843 elfcpp::Swap<32, true>::writeval(wv, val);
2846 case elfcpp::R_SPARC_TLS_GD_CALL:
2847 // The compiler can put the TLS_GD_ADD instruction
2848 // into the delay slot of the call. If so, we need
2849 // to transpose the two instructions so that the
2850 // the new sequence works properly.
2852 // The test we use is if the instruction in the
2853 // delay slot is an add with destination register
2855 val = elfcpp::Swap<32, true>::readval(wv + 1);
2856 if ((val & 0x81f80000) == 0x80000000
2857 && ((val >> 25) & 0x1f) == 0x8)
2864 elfcpp::Swap<32, true>::writeval(wv, val);
2867 this->ignore_gd_add_ = true;
2870 // call __tls_get_addr --> add %g7, %o0, %o0
2871 elfcpp::Swap<32, true>::writeval(wv, 0x9001c008);
2876 else if (optimized_type == tls::TLSOPT_NONE)
2880 case elfcpp::R_SPARC_TLS_GD_HI22:
2881 Reloc::hi22(view, value, addend);
2883 case elfcpp::R_SPARC_TLS_GD_LO10:
2884 Reloc::lo10(view, value, addend);
2886 case elfcpp::R_SPARC_TLS_GD_ADD:
2888 case elfcpp::R_SPARC_TLS_GD_CALL:
2890 Symbol_value<size> symval;
2891 elfcpp::Elf_Xword value;
2894 tsym = target->tls_get_addr_sym_;
2896 value = (target->plt_section()->address() +
2897 tsym->plt_offset());
2898 symval.set_output_value(value);
2899 Reloc::wdisp30(view, object, &symval, addend, address);
2906 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2907 _("unsupported reloc %u"),
2911 case elfcpp::R_SPARC_TLS_LDM_HI22:
2912 case elfcpp::R_SPARC_TLS_LDM_LO10:
2913 case elfcpp::R_SPARC_TLS_LDM_ADD:
2914 case elfcpp::R_SPARC_TLS_LDM_CALL:
2915 if (optimized_type == tls::TLSOPT_TO_LE)
2917 Insntype* wv = reinterpret_cast<Insntype*>(view);
2921 case elfcpp::R_SPARC_TLS_LDM_HI22:
2922 case elfcpp::R_SPARC_TLS_LDM_LO10:
2923 case elfcpp::R_SPARC_TLS_LDM_ADD:
2924 elfcpp::Swap<32, true>::writeval(wv, sparc_nop);
2927 case elfcpp::R_SPARC_TLS_LDM_CALL:
2928 elfcpp::Swap<32, true>::writeval(wv, sparc_mov_g0_o0);
2933 else if (optimized_type == tls::TLSOPT_NONE)
2935 // Relocate the field with the offset of the GOT entry for
2936 // the module index.
2937 unsigned int got_offset;
2939 got_offset = target->got_mod_index_entry(NULL, NULL, NULL);
2942 case elfcpp::R_SPARC_TLS_LDM_HI22:
2943 Reloc::hi22(view, got_offset, addend);
2945 case elfcpp::R_SPARC_TLS_LDM_LO10:
2946 Reloc::lo10(view, got_offset, addend);
2948 case elfcpp::R_SPARC_TLS_LDM_ADD:
2950 case elfcpp::R_SPARC_TLS_LDM_CALL:
2952 Symbol_value<size> symval;
2953 elfcpp::Elf_Xword value;
2956 tsym = target->tls_get_addr_sym_;
2958 value = (target->plt_section()->address() +
2959 tsym->plt_offset());
2960 symval.set_output_value(value);
2961 Reloc::wdisp30(view, object, &symval, addend, address);
2967 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2968 _("unsupported reloc %u"),
2972 // These relocs can appear in debugging sections, in which case
2973 // we won't see the TLS_LDM relocs. The local_dynamic_type
2974 // field tells us this.
2975 case elfcpp::R_SPARC_TLS_LDO_HIX22:
2976 if (optimized_type == tls::TLSOPT_TO_LE)
2978 value -= tls_segment->memsz();
2979 Reloc::hix22(view, value, addend);
2982 Reloc::ldo_hix22(view, value, addend);
2984 case elfcpp::R_SPARC_TLS_LDO_LOX10:
2985 if (optimized_type == tls::TLSOPT_TO_LE)
2987 value -= tls_segment->memsz();
2988 Reloc::lox10(view, value, addend);
2991 Reloc::ldo_lox10(view, value, addend);
2993 case elfcpp::R_SPARC_TLS_LDO_ADD:
2994 if (optimized_type == tls::TLSOPT_TO_LE)
2996 Insntype* wv = reinterpret_cast<Insntype*>(view);
2999 // add %reg1, %reg2, %reg3 --> add %g7, %reg2, %reg3
3000 val = elfcpp::Swap<32, true>::readval(wv);
3001 val = (val & ~0x7c000) | 0x1c000;
3002 elfcpp::Swap<32, true>::writeval(wv, val);
3006 // When optimizing IE --> LE, the only relocation that is handled
3007 // differently is R_SPARC_TLS_IE_LD, it is rewritten from
3008 // 'ld{,x} [rs1 + rs2], rd' into 'mov rs2, rd' or simply a NOP is
3009 // rs2 and rd are the same.
3010 case elfcpp::R_SPARC_TLS_IE_LD:
3011 case elfcpp::R_SPARC_TLS_IE_LDX:
3012 if (optimized_type == tls::TLSOPT_TO_LE)
3014 Insntype* wv = reinterpret_cast<Insntype*>(view);
3015 Insntype val = elfcpp::Swap<32, true>::readval(wv);
3016 Insntype rs2 = val & 0x1f;
3017 Insntype rd = (val >> 25) & 0x1f;
3022 val = sparc_mov | (val & 0x3e00001f);
3024 elfcpp::Swap<32, true>::writeval(wv, val);
3028 case elfcpp::R_SPARC_TLS_IE_HI22:
3029 case elfcpp::R_SPARC_TLS_IE_LO10:
3030 if (optimized_type == tls::TLSOPT_TO_LE)
3032 value -= tls_segment->memsz();
3035 case elfcpp::R_SPARC_TLS_IE_HI22:
3036 // IE_HI22 --> LE_HIX22
3037 Reloc::hix22(view, value, addend);
3039 case elfcpp::R_SPARC_TLS_IE_LO10:
3040 // IE_LO10 --> LE_LOX10
3041 Reloc::lox10(view, value, addend);
3046 else if (optimized_type == tls::TLSOPT_NONE)
3048 // Relocate the field with the offset of the GOT entry for
3049 // the tp-relative offset of the symbol.
3052 gold_assert(gsym->has_got_offset(GOT_TYPE_TLS_OFFSET));
3053 value = gsym->got_offset(GOT_TYPE_TLS_OFFSET);
3057 unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
3058 gold_assert(object->local_has_got_offset(r_sym,
3059 GOT_TYPE_TLS_OFFSET));
3060 value = object->local_got_offset(r_sym,
3061 GOT_TYPE_TLS_OFFSET);
3065 case elfcpp::R_SPARC_TLS_IE_HI22:
3066 Reloc::hi22(view, value, addend);
3068 case elfcpp::R_SPARC_TLS_IE_LO10:
3069 Reloc::lo10(view, value, addend);
3074 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
3075 _("unsupported reloc %u"),
3079 case elfcpp::R_SPARC_TLS_IE_ADD:
3080 // This seems to be mainly so that we can find the addition
3081 // instruction if there is one. There doesn't seem to be any
3082 // actual relocation to apply.
3085 case elfcpp::R_SPARC_TLS_LE_HIX22:
3086 // If we're creating a shared library, a dynamic relocation will
3087 // have been created for this location, so do not apply it now.
3088 if (!parameters->options().shared())
3090 value -= tls_segment->memsz();
3091 Reloc::hix22(view, value, addend);
3095 case elfcpp::R_SPARC_TLS_LE_LOX10:
3096 // If we're creating a shared library, a dynamic relocation will
3097 // have been created for this location, so do not apply it now.
3098 if (!parameters->options().shared())
3100 value -= tls_segment->memsz();
3101 Reloc::lox10(view, value, addend);
3107 // Relocate section data.
3109 template<int size, bool big_endian>
3111 Target_sparc<size, big_endian>::relocate_section(
3112 const Relocate_info<size, big_endian>* relinfo,
3113 unsigned int sh_type,
3114 const unsigned char* prelocs,
3116 Output_section* output_section,
3117 bool needs_special_offset_handling,
3118 unsigned char* view,
3119 typename elfcpp::Elf_types<size>::Elf_Addr address,
3120 section_size_type view_size)
3122 typedef Target_sparc<size, big_endian> Sparc;
3123 typedef typename Target_sparc<size, big_endian>::Relocate Sparc_relocate;
3125 gold_assert(sh_type == elfcpp::SHT_RELA);
3127 gold::relocate_section<size, big_endian, Sparc, elfcpp::SHT_RELA,
3134 needs_special_offset_handling,
3140 // Return the size of a relocation while scanning during a relocatable
3143 template<int size, bool big_endian>
3145 Target_sparc<size, big_endian>::Relocatable_size_for_reloc::get_size_for_reloc(
3149 // We are always SHT_RELA, so we should never get here.
3154 // Scan the relocs during a relocatable link.
3156 template<int size, bool big_endian>
3158 Target_sparc<size, big_endian>::scan_relocatable_relocs(
3159 const General_options& options,
3160 Symbol_table* symtab,
3162 Sized_relobj<size, big_endian>* object,
3163 unsigned int data_shndx,
3164 unsigned int sh_type,
3165 const unsigned char* prelocs,
3167 Output_section* output_section,
3168 bool needs_special_offset_handling,
3169 size_t local_symbol_count,
3170 const unsigned char* plocal_symbols,
3171 Relocatable_relocs* rr)
3173 gold_assert(sh_type == elfcpp::SHT_RELA);
3175 typedef gold::Default_scan_relocatable_relocs<elfcpp::SHT_RELA,
3176 Relocatable_size_for_reloc> Scan_relocatable_relocs;
3178 gold::scan_relocatable_relocs<size, big_endian, elfcpp::SHT_RELA,
3179 Scan_relocatable_relocs>(
3188 needs_special_offset_handling,
3194 // Relocate a section during a relocatable link.
3196 template<int size, bool big_endian>
3198 Target_sparc<size, big_endian>::relocate_for_relocatable(
3199 const Relocate_info<size, big_endian>* relinfo,
3200 unsigned int sh_type,
3201 const unsigned char* prelocs,
3203 Output_section* output_section,
3204 off_t offset_in_output_section,
3205 const Relocatable_relocs* rr,
3206 unsigned char* view,
3207 typename elfcpp::Elf_types<size>::Elf_Addr view_address,
3208 section_size_type view_size,
3209 unsigned char* reloc_view,
3210 section_size_type reloc_view_size)
3212 gold_assert(sh_type == elfcpp::SHT_RELA);
3214 gold::relocate_for_relocatable<size, big_endian, elfcpp::SHT_RELA>(
3219 offset_in_output_section,
3228 // Return the value to use for a dynamic which requires special
3229 // treatment. This is how we support equality comparisons of function
3230 // pointers across shared library boundaries, as described in the
3231 // processor specific ABI supplement.
3233 template<int size, bool big_endian>
3235 Target_sparc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const
3237 gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset());
3238 return this->plt_section()->address() + gsym->plt_offset();
3241 // The selector for sparc object files.
3243 template<int size, bool big_endian>
3244 class Target_selector_sparc : public Target_selector
3247 Target_selector_sparc()
3248 : Target_selector(elfcpp::EM_NONE, size, big_endian,
3249 (size == 64 ? "elf64-sparc" : "elf32-sparc"))
3252 Target* do_recognize(int machine, int, int)
3257 if (machine != elfcpp::EM_SPARCV9)
3262 if (machine != elfcpp::EM_SPARC
3263 && machine != elfcpp::EM_SPARC32PLUS)
3271 return this->instantiate_target();
3274 Target* do_instantiate_target()
3275 { return new Target_sparc<size, big_endian>(); }
3278 Target_selector_sparc<32, true> target_selector_sparc32;
3279 Target_selector_sparc<64, true> target_selector_sparc64;
3281 } // End anonymous namespace.