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"
50 template<int size, bool big_endian>
51 class Output_data_plt_sparc;
53 template<int size, bool big_endian>
54 class Target_sparc : public Sized_target<size, big_endian>
57 typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section;
60 : Sized_target<size, big_endian>(&sparc_info),
61 got_(NULL), plt_(NULL), rela_dyn_(NULL),
62 copy_relocs_(elfcpp::R_SPARC_COPY), dynbss_(NULL),
63 got_mod_index_offset_(-1U), tls_get_addr_sym_(NULL)
67 // Process the relocations to determine unreferenced sections for
68 // garbage collection.
70 gc_process_relocs(Symbol_table* symtab,
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(Symbol_table* symtab,
86 Sized_relobj<size, big_endian>* object,
87 unsigned int data_shndx,
89 const unsigned char* prelocs,
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.
97 do_finalize_sections(Layout*, const Input_objects*, Symbol_table*);
99 // Return the value to use for a dynamic which requires special
102 do_dynsym_value(const Symbol*) const;
104 // Relocate a section.
106 relocate_section(const Relocate_info<size, big_endian>*,
107 unsigned int sh_type,
108 const unsigned char* prelocs,
110 Output_section* output_section,
111 bool needs_special_offset_handling,
113 typename elfcpp::Elf_types<size>::Elf_Addr view_address,
114 section_size_type view_size,
115 const Reloc_symbol_changes*);
117 // Scan the relocs during a relocatable link.
119 scan_relocatable_relocs(Symbol_table* symtab,
121 Sized_relobj<size, big_endian>* object,
122 unsigned int data_shndx,
123 unsigned int sh_type,
124 const unsigned char* prelocs,
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*);
132 // Relocate a section during a relocatable link.
134 relocate_for_relocatable(const Relocate_info<size, big_endian>*,
135 unsigned int sh_type,
136 const unsigned char* prelocs,
138 Output_section* output_section,
139 off_t offset_in_output_section,
140 const Relocatable_relocs*,
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.
148 do_is_defined_by_abi(const Symbol* sym) const
150 // XXX Really need to support this better...
151 if (sym->type() == elfcpp::STT_SPARC_REGISTER)
154 return strcmp(sym->name(), "___tls_get_addr") == 0;
157 // Return whether there is a GOT section.
159 has_got_section() const
160 { return this->got_ != NULL; }
162 // Return the size of the GOT section.
166 gold_assert(this->got_ != NULL);
167 return this->got_->data_size();
172 // The class which scans relocations.
177 : issued_non_pic_error_(false)
181 local(Symbol_table* symtab, Layout* layout, Target_sparc* target,
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);
189 global(Symbol_table* symtab, Layout* layout, Target_sparc* target,
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,
198 unsupported_reloc_local(Sized_relobj<size, big_endian>*,
199 unsigned int r_type);
202 unsupported_reloc_global(Sized_relobj<size, big_endian>*,
203 unsigned int r_type, Symbol*);
206 generate_tls_call(Symbol_table* symtab, Layout* layout,
207 Target_sparc* target);
210 check_non_pic(Relobj*, unsigned int r_type);
212 // Whether we have issued an error about a non-PIC compilation.
213 bool issued_non_pic_error_;
216 // The class which implements relocation.
221 : ignore_gd_add_(false)
226 if (this->ignore_gd_add_)
228 // FIXME: This needs to specify the location somehow.
229 gold_error(_("missing expected TLS relocation"));
233 // Do a relocation. Return false if the caller should not issue
234 // any warnings about this relocation.
236 relocate(const Relocate_info<size, big_endian>*, Target_sparc*,
237 Output_section*, size_t relnum,
238 const elfcpp::Rela<size, big_endian>&,
239 unsigned int r_type, const Sized_symbol<size>*,
240 const Symbol_value<size>*,
242 typename elfcpp::Elf_types<size>::Elf_Addr,
246 // Do a TLS relocation.
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>*,
253 typename elfcpp::Elf_types<size>::Elf_Addr,
256 // Ignore the next relocation which should be R_SPARC_TLS_GD_ADD
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
266 get_size_for_reloc(unsigned int, Relobj*);
269 // Get the GOT section, creating it if necessary.
270 Output_data_got<size, big_endian>*
271 got_section(Symbol_table*, Layout*);
273 // Create a PLT entry for a global symbol.
275 make_plt_entry(Symbol_table*, Layout*, Symbol*);
277 // Create a GOT entry for the TLS module index.
279 got_mod_index_entry(Symbol_table* symtab, Layout* layout,
280 Sized_relobj<size, big_endian>* object);
282 // Return the gsym for "__tls_get_addr". Cache if not already
285 tls_get_addr_sym(Symbol_table* symtab)
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_;
293 // Get the PLT section.
294 const Output_data_plt_sparc<size, big_endian>*
297 gold_assert(this->plt_ != NULL);
301 // Get the dynamic reloc section, creating it if necessary.
303 rela_dyn_section(Layout*);
305 // Copy a relocation against a global symbol.
307 copy_reloc(Symbol_table* symtab, Layout* layout,
308 Sized_relobj<size, big_endian>* object,
309 unsigned int shndx, Output_section* output_section,
310 Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc)
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));
318 // Information about this specific target which we pass to the
319 // general Target structure.
320 static Target::Target_info sparc_info;
322 // The types of GOT entries needed for this platform.
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
331 Output_data_got<size, big_endian>* got_;
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.
337 Copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_;
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_;
347 Target::Target_info Target_sparc<32, true>::sparc_info =
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
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)
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
364 0, // large_common_section_flags
365 NULL, // attributes_section
366 NULL // attributes_vendor
370 Target::Target_info Target_sparc<64, true>::sparc_info =
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
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)
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
387 0, // large_common_section_flags
388 NULL, // attributes_section
389 NULL // attributes_vendor
392 // We have to take care here, even when operating in little-endian
393 // mode, sparc instructions are still big endian.
394 template<int size, bool big_endian>
395 class Sparc_relocate_functions
398 // Do a simple relocation with the addend in the relocation.
399 template<int valsize>
401 rela(unsigned char* view,
402 unsigned int right_shift,
403 typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
404 typename elfcpp::Swap<size, big_endian>::Valtype value,
405 typename elfcpp::Swap<size, big_endian>::Valtype addend)
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);
410 Valtype reloc = ((value + addend) >> right_shift);
415 elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
418 // Do a simple relocation using a symbol value with the addend in
420 template<int valsize>
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)
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);
437 elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
440 // Do a simple relocation using a symbol value with the addend in
441 // the relocation, unaligned.
442 template<int valsize>
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)
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);
459 elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, val | reloc);
462 // Do a simple PC relative relocation with a Symbol_value with the
463 // addend in the relocation.
464 template<int valsize>
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)
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)
483 elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
486 template<int valsize>
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)
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);
499 elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, reloc);
502 typedef Sparc_relocate_functions<size, big_endian> This;
503 typedef Sparc_relocate_functions<size, true> This_insn;
506 // R_SPARC_WDISP30: (Symbol + Addend - Address) >> 2
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)
514 This_insn::template pcrela<32>(view, 2, 0x3fffffff, object,
515 psymval, addend, address);
518 // R_SPARC_WDISP22: (Symbol + Addend - Address) >> 2
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)
526 This_insn::template pcrela<32>(view, 2, 0x003fffff, object,
527 psymval, addend, address);
530 // R_SPARC_WDISP19: (Symbol + Addend - Address) >> 2
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)
538 This_insn::template pcrela<32>(view, 2, 0x0007ffff, object,
539 psymval, addend, address);
542 // R_SPARC_WDISP16: (Symbol + Addend - Address) >> 2
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)
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)
556 // The relocation value is split between the low 14 bits,
558 val &= ~((0x3 << 20) | 0x3fff);
559 reloc = (((reloc & 0xc000) << (20 - 14))
560 | (reloc & 0x3ffff));
562 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
565 // R_SPARC_PC22: (Symbol + Addend - Address) >> 10
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)
573 This_insn::template pcrela<32>(view, 10, 0x003fffff, object,
574 psymval, addend, address);
577 // R_SPARC_PC10: (Symbol + Addend - Address) & 0x3ff
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)
585 This_insn::template pcrela<32>(view, 0, 0x000003ff, object,
586 psymval, addend, address);
589 // R_SPARC_HI22: (Symbol + Addend) >> 10
591 hi22(unsigned char* view,
592 typename elfcpp::Elf_types<size>::Elf_Addr value,
593 typename elfcpp::Elf_types<size>::Elf_Addr addend)
595 This_insn::template rela<32>(view, 10, 0x003fffff, value, addend);
598 // R_SPARC_HI22: (Symbol + Addend) >> 10
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)
605 This_insn::template rela<32>(view, 10, 0x003fffff, object, psymval, addend);
608 // R_SPARC_PCPLT22: (Symbol + Addend - Address) >> 10
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)
616 This_insn::template pcrela<32>(view, 10, 0x003fffff, object,
617 psymval, addend, address);
620 // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
622 lo10(unsigned char* view,
623 typename elfcpp::Elf_types<size>::Elf_Addr value,
624 typename elfcpp::Elf_types<size>::Elf_Addr addend)
626 This_insn::template rela<32>(view, 0, 0x000003ff, value, addend);
629 // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
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)
636 This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, 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,
645 typename elfcpp::Elf_types<size>::Elf_Addr address)
647 This_insn::template pcrela<32>(view, 0, 0x000003ff, object,
648 psymval, addend, address);
651 // R_SPARC_OLO10: ((Symbol + Addend) & 0x3ff) + Addend2
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)
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);
669 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
672 // R_SPARC_22: (Symbol + Addend)
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)
679 This_insn::template rela<32>(view, 0, 0x003fffff, object, psymval, addend);
682 // R_SPARC_13: (Symbol + Addend)
684 rela32_13(unsigned char* view,
685 typename elfcpp::Elf_types<size>::Elf_Addr value,
686 typename elfcpp::Elf_types<size>::Elf_Addr addend)
688 This_insn::template rela<32>(view, 0, 0x00001fff, value, addend);
691 // R_SPARC_13: (Symbol + Addend)
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)
698 This_insn::template rela<32>(view, 0, 0x00001fff, object, psymval, addend);
701 // R_SPARC_UA16: (Symbol + Addend)
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)
708 This::template rela_ua<16>(view, 0, 0xffff, object, psymval, addend);
711 // R_SPARC_UA32: (Symbol + Addend)
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)
718 This::template rela_ua<32>(view, 0, 0xffffffff, object, psymval, addend);
721 // R_SPARC_UA64: (Symbol + Addend)
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)
728 This::template rela_ua<64>(view, 0, ~(elfcpp::Elf_Xword) 0,
729 object, psymval, addend);
732 // R_SPARC_DISP8: (Symbol + Addend - Address)
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)
740 This::template pcrela_unaligned<8>(view, object, psymval,
744 // R_SPARC_DISP16: (Symbol + Addend - Address)
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)
752 This::template pcrela_unaligned<16>(view, object, psymval,
756 // R_SPARC_DISP32: (Symbol + Addend - Address)
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)
764 This::template pcrela_unaligned<32>(view, object, psymval,
768 // R_SPARC_DISP64: (Symbol + Addend - Address)
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)
776 This::template pcrela_unaligned<64>(view, object, psymval,
780 // R_SPARC_H44: (Symbol + Addend) >> 22
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)
787 This_insn::template rela<32>(view, 22, 0x003fffff, object, psymval, addend);
790 // R_SPARC_M44: ((Symbol + Addend) >> 12) & 0x3ff
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)
797 This_insn::template rela<32>(view, 12, 0x000003ff, object, psymval, addend);
800 // R_SPARC_L44: (Symbol + Addend) & 0xfff
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)
807 This_insn::template rela<32>(view, 0, 0x00000fff, object, psymval, addend);
810 // R_SPARC_HH22: (Symbol + Addend) >> 42
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)
817 This_insn::template rela<32>(view, 42, 0x003fffff, object, psymval, addend);
820 // R_SPARC_PC_HH22: (Symbol + Addend - Address) >> 42
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)
828 This_insn::template pcrela<32>(view, 42, 0x003fffff, object,
829 psymval, addend, address);
832 // R_SPARC_HM10: ((Symbol + Addend) >> 32) & 0x3ff
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)
839 This_insn::template rela<32>(view, 32, 0x000003ff, object, psymval, addend);
842 // R_SPARC_PC_HM10: ((Symbol + Addend - Address) >> 32) & 0x3ff
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)
850 This_insn::template pcrela<32>(view, 32, 0x000003ff, object,
851 psymval, addend, address);
854 // R_SPARC_11: (Symbol + Addend)
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)
861 This_insn::template rela<32>(view, 0, 0x000007ff, object, psymval, addend);
864 // R_SPARC_10: (Symbol + Addend)
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)
871 This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend);
874 // R_SPARC_7: (Symbol + Addend)
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)
881 This_insn::template rela<32>(view, 0, 0x0000007f, object, psymval, addend);
884 // R_SPARC_6: (Symbol + Addend)
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)
891 This_insn::template rela<32>(view, 0, 0x0000003f, object, psymval, addend);
894 // R_SPARC_5: (Symbol + Addend)
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)
901 This_insn::template rela<32>(view, 0, 0x0000001f, object, psymval, addend);
904 // R_SPARC_TLS_LDO_HIX22: @dtpoff(Symbol + Addend) >> 10
906 ldo_hix22(unsigned char* view,
907 typename elfcpp::Elf_types<size>::Elf_Addr value,
908 typename elfcpp::Elf_types<size>::Elf_Addr addend)
910 This_insn::hi22(view, value, addend);
913 // R_SPARC_TLS_LDO_LOX10: @dtpoff(Symbol + Addend) & 0x3ff
915 ldo_lox10(unsigned char* view,
916 typename elfcpp::Elf_types<size>::Elf_Addr value,
917 typename elfcpp::Elf_types<size>::Elf_Addr addend)
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);
922 Valtype reloc = (value + addend);
927 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
930 // R_SPARC_TLS_LE_HIX22: (@tpoff(Symbol + Addend) ^ 0xffffffffffffffff) >> 10
932 hix22(unsigned char* view,
933 typename elfcpp::Elf_types<size>::Elf_Addr value,
934 typename elfcpp::Elf_types<size>::Elf_Addr addend)
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);
939 Valtype reloc = (value + addend);
943 reloc ^= ~(Valtype)0;
948 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
951 // R_SPARC_HIX22: ((Symbol + Addend) ^ 0xffffffffffffffff) >> 10
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)
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);
965 reloc ^= ~(Valtype)0;
970 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
974 // R_SPARC_TLS_LE_LOX10: (@tpoff(Symbol + Addend) & 0x3ff) | 0x1c00
976 lox10(unsigned char* view,
977 typename elfcpp::Elf_types<size>::Elf_Addr value,
978 typename elfcpp::Elf_types<size>::Elf_Addr addend)
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);
983 Valtype reloc = (value + addend);
989 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
992 // R_SPARC_LOX10: ((Symbol + Addend) & 0x3ff) | 0x1c00
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)
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);
1008 elfcpp::Swap<32, true>::writeval(wv, val | reloc);
1012 // Get the GOT section, creating it if necessary.
1014 template<int size, bool big_endian>
1015 Output_data_got<size, big_endian>*
1016 Target_sparc<size, big_endian>::got_section(Symbol_table* symtab,
1019 if (this->got_ == NULL)
1021 gold_assert(symtab != NULL && layout != NULL);
1023 this->got_ = new Output_data_got<size, big_endian>();
1026 os = layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS,
1028 | elfcpp::SHF_WRITE),
1032 // Define _GLOBAL_OFFSET_TABLE_ at the start of the .got section.
1033 symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL,
1034 Symbol_table::PREDEFINED,
1036 0, 0, elfcpp::STT_OBJECT,
1038 elfcpp::STV_HIDDEN, 0,
1045 // Get the dynamic reloc section, creating it if necessary.
1047 template<int size, bool big_endian>
1048 typename Target_sparc<size, big_endian>::Reloc_section*
1049 Target_sparc<size, big_endian>::rela_dyn_section(Layout* layout)
1051 if (this->rela_dyn_ == NULL)
1053 gold_assert(layout != NULL);
1054 this->rela_dyn_ = new Reloc_section(parameters->options().combreloc());
1055 layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA,
1056 elfcpp::SHF_ALLOC, this->rela_dyn_, true);
1058 return this->rela_dyn_;
1061 // A class to handle the PLT data.
1063 template<int size, bool big_endian>
1064 class Output_data_plt_sparc : public Output_section_data
1067 typedef Output_data_reloc<elfcpp::SHT_RELA, true,
1068 size, big_endian> Reloc_section;
1070 Output_data_plt_sparc(Layout*);
1072 // Add an entry to the PLT.
1073 void add_entry(Symbol* gsym);
1075 // Return the .rela.plt section data.
1076 const Reloc_section* rel_plt() const
1082 void do_adjust_output_section(Output_section* os);
1084 // Write to a map file.
1086 do_print_to_mapfile(Mapfile* mapfile) const
1087 { mapfile->print_output_data(this, _("** PLT")); }
1090 // The size of an entry in the PLT.
1091 static const int base_plt_entry_size = (size == 32 ? 12 : 32);
1093 static const unsigned int plt_entries_per_block = 160;
1094 static const unsigned int plt_insn_chunk_size = 24;
1095 static const unsigned int plt_pointer_chunk_size = 8;
1096 static const unsigned int plt_block_size =
1097 (plt_entries_per_block
1098 * (plt_insn_chunk_size + plt_pointer_chunk_size));
1100 // Set the final size.
1102 set_final_data_size()
1104 unsigned int full_count = this->count_ + 4;
1105 unsigned int extra = (size == 32 ? 4 : 0);
1107 if (size == 32 || full_count < 32768)
1108 this->set_data_size((full_count * base_plt_entry_size) + extra);
1111 unsigned int ext_cnt = full_count - 32768;
1113 this->set_data_size((32768 * base_plt_entry_size)
1115 * (plt_insn_chunk_size
1116 + plt_pointer_chunk_size)));
1120 // Write out the PLT data.
1122 do_write(Output_file*);
1124 // The reloc section.
1125 Reloc_section* rel_;
1126 // The number of PLT entries.
1127 unsigned int count_;
1130 // Define the constants as required by C++ standard.
1132 template<int size, bool big_endian>
1133 const int Output_data_plt_sparc<size, big_endian>::base_plt_entry_size;
1135 template<int size, bool big_endian>
1137 Output_data_plt_sparc<size, big_endian>::plt_entries_per_block;
1139 template<int size, bool big_endian>
1140 const unsigned int Output_data_plt_sparc<size, big_endian>::plt_insn_chunk_size;
1142 template<int size, bool big_endian>
1144 Output_data_plt_sparc<size, big_endian>::plt_pointer_chunk_size;
1146 template<int size, bool big_endian>
1147 const unsigned int Output_data_plt_sparc<size, big_endian>::plt_block_size;
1149 // Create the PLT section. The ordinary .got section is an argument,
1150 // since we need to refer to the start.
1152 template<int size, bool big_endian>
1153 Output_data_plt_sparc<size, big_endian>::Output_data_plt_sparc(Layout* layout)
1154 : Output_section_data(size == 32 ? 4 : 8), count_(0)
1156 this->rel_ = new Reloc_section(false);
1157 layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA,
1158 elfcpp::SHF_ALLOC, this->rel_, true);
1161 template<int size, bool big_endian>
1163 Output_data_plt_sparc<size, big_endian>::do_adjust_output_section(Output_section* os)
1168 // Add an entry to the PLT.
1170 template<int size, bool big_endian>
1172 Output_data_plt_sparc<size, big_endian>::add_entry(Symbol* gsym)
1174 gold_assert(!gsym->has_plt_offset());
1176 unsigned int index = this->count_ + 4;
1177 section_offset_type plt_offset;
1179 if (size == 32 || index < 32768)
1180 plt_offset = index * base_plt_entry_size;
1183 unsigned int ext_index = index - 32768;
1185 plt_offset = (32768 * base_plt_entry_size)
1186 + ((ext_index / plt_entries_per_block)
1188 + ((ext_index % plt_entries_per_block)
1189 * plt_insn_chunk_size);
1192 gsym->set_plt_offset(plt_offset);
1196 // Every PLT entry needs a reloc.
1197 gsym->set_needs_dynsym_entry();
1198 this->rel_->add_global(gsym, elfcpp::R_SPARC_JMP_SLOT, this,
1201 // Note that we don't need to save the symbol. The contents of the
1202 // PLT are independent of which symbols are used. The symbols only
1203 // appear in the relocations.
1206 static const unsigned int sparc_nop = 0x01000000;
1207 static const unsigned int sparc_sethi_g1 = 0x03000000;
1208 static const unsigned int sparc_branch_always = 0x30800000;
1209 static const unsigned int sparc_branch_always_pt = 0x30680000;
1210 static const unsigned int sparc_mov = 0x80100000;
1211 static const unsigned int sparc_mov_g0_o0 = 0x90100000;
1212 static const unsigned int sparc_mov_o7_g5 = 0x8a10000f;
1213 static const unsigned int sparc_call_plus_8 = 0x40000002;
1214 static const unsigned int sparc_ldx_o7_imm_g1 = 0xc25be000;
1215 static const unsigned int sparc_jmpl_o7_g1_g1 = 0x83c3c001;
1216 static const unsigned int sparc_mov_g5_o7 = 0x9e100005;
1218 // Write out the PLT.
1220 template<int size, bool big_endian>
1222 Output_data_plt_sparc<size, big_endian>::do_write(Output_file* of)
1224 const off_t offset = this->offset();
1225 const section_size_type oview_size =
1226 convert_to_section_size_type(this->data_size());
1227 unsigned char* const oview = of->get_output_view(offset, oview_size);
1228 unsigned char* pov = oview;
1230 memset(pov, 0, base_plt_entry_size * 4);
1231 pov += base_plt_entry_size * 4;
1233 unsigned int plt_offset = base_plt_entry_size * 4;
1234 const unsigned int count = this->count_;
1240 limit = (count > 32768 ? 32768 : count);
1242 for (unsigned int i = 0; i < limit; ++i)
1244 elfcpp::Swap<32, true>::writeval(pov + 0x00,
1245 sparc_sethi_g1 + plt_offset);
1246 elfcpp::Swap<32, true>::writeval(pov + 0x04,
1247 sparc_branch_always_pt +
1248 (((base_plt_entry_size -
1249 (plt_offset + 4)) >> 2) &
1251 elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop);
1252 elfcpp::Swap<32, true>::writeval(pov + 0x0c, sparc_nop);
1253 elfcpp::Swap<32, true>::writeval(pov + 0x10, sparc_nop);
1254 elfcpp::Swap<32, true>::writeval(pov + 0x14, sparc_nop);
1255 elfcpp::Swap<32, true>::writeval(pov + 0x18, sparc_nop);
1256 elfcpp::Swap<32, true>::writeval(pov + 0x1c, sparc_nop);
1258 pov += base_plt_entry_size;
1259 plt_offset += base_plt_entry_size;
1264 unsigned int ext_cnt = count - 32768;
1265 unsigned int blks = ext_cnt / plt_entries_per_block;
1267 for (unsigned int i = 0; i < blks; ++i)
1269 unsigned int data_off = (plt_entries_per_block
1270 * plt_insn_chunk_size) - 4;
1272 for (unsigned int j = 0; j < plt_entries_per_block; ++j)
1274 elfcpp::Swap<32, true>::writeval(pov + 0x00,
1276 elfcpp::Swap<32, true>::writeval(pov + 0x04,
1278 elfcpp::Swap<32, true>::writeval(pov + 0x08,
1280 elfcpp::Swap<32, true>::writeval(pov + 0x0c,
1281 sparc_ldx_o7_imm_g1 +
1282 (data_off & 0x1fff));
1283 elfcpp::Swap<32, true>::writeval(pov + 0x10,
1284 sparc_jmpl_o7_g1_g1);
1285 elfcpp::Swap<32, true>::writeval(pov + 0x14,
1288 elfcpp::Swap<64, big_endian>::writeval(
1289 pov + 0x4 + data_off,
1290 (elfcpp::Elf_Xword) (oview - (pov + 0x04)));
1292 pov += plt_insn_chunk_size;
1297 unsigned int sub_blk_cnt = ext_cnt % plt_entries_per_block;
1298 for (unsigned int i = 0; i < sub_blk_cnt; ++i)
1300 unsigned int data_off = (sub_blk_cnt
1301 * plt_insn_chunk_size) - 4;
1303 for (unsigned int j = 0; j < plt_entries_per_block; ++j)
1305 elfcpp::Swap<32, true>::writeval(pov + 0x00,
1307 elfcpp::Swap<32, true>::writeval(pov + 0x04,
1309 elfcpp::Swap<32, true>::writeval(pov + 0x08,
1311 elfcpp::Swap<32, true>::writeval(pov + 0x0c,
1312 sparc_ldx_o7_imm_g1 +
1313 (data_off & 0x1fff));
1314 elfcpp::Swap<32, true>::writeval(pov + 0x10,
1315 sparc_jmpl_o7_g1_g1);
1316 elfcpp::Swap<32, true>::writeval(pov + 0x14,
1319 elfcpp::Swap<64, big_endian>::writeval(
1320 pov + 0x4 + data_off,
1321 (elfcpp::Elf_Xword) (oview - (pov + 0x04)));
1323 pov += plt_insn_chunk_size;
1331 for (unsigned int i = 0; i < count; ++i)
1333 elfcpp::Swap<32, true>::writeval(pov + 0x00,
1334 sparc_sethi_g1 + plt_offset);
1335 elfcpp::Swap<32, true>::writeval(pov + 0x04,
1336 sparc_branch_always +
1337 (((- (plt_offset + 4)) >> 2) &
1339 elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop);
1341 pov += base_plt_entry_size;
1342 plt_offset += base_plt_entry_size;
1345 elfcpp::Swap<32, true>::writeval(pov, sparc_nop);
1349 gold_assert(static_cast<section_size_type>(pov - oview) == oview_size);
1351 of->write_output_view(offset, oview_size, oview);
1354 // Create a PLT entry for a global symbol.
1356 template<int size, bool big_endian>
1358 Target_sparc<size, big_endian>::make_plt_entry(Symbol_table* symtab,
1362 if (gsym->has_plt_offset())
1365 if (this->plt_ == NULL)
1367 // Create the GOT sections first.
1368 this->got_section(symtab, layout);
1370 this->plt_ = new Output_data_plt_sparc<size, big_endian>(layout);
1371 layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS,
1373 | elfcpp::SHF_EXECINSTR
1374 | elfcpp::SHF_WRITE),
1377 // Define _PROCEDURE_LINKAGE_TABLE_ at the start of the .plt section.
1378 symtab->define_in_output_data("_PROCEDURE_LINKAGE_TABLE_", NULL,
1379 Symbol_table::PREDEFINED,
1381 0, 0, elfcpp::STT_OBJECT,
1383 elfcpp::STV_HIDDEN, 0,
1387 this->plt_->add_entry(gsym);
1390 // Create a GOT entry for the TLS module index.
1392 template<int size, bool big_endian>
1394 Target_sparc<size, big_endian>::got_mod_index_entry(Symbol_table* symtab,
1396 Sized_relobj<size, big_endian>* object)
1398 if (this->got_mod_index_offset_ == -1U)
1400 gold_assert(symtab != NULL && layout != NULL && object != NULL);
1401 Reloc_section* rela_dyn = this->rela_dyn_section(layout);
1402 Output_data_got<size, big_endian>* got;
1403 unsigned int got_offset;
1405 got = this->got_section(symtab, layout);
1406 got_offset = got->add_constant(0);
1407 rela_dyn->add_local(object, 0,
1409 elfcpp::R_SPARC_TLS_DTPMOD64 :
1410 elfcpp::R_SPARC_TLS_DTPMOD32), got,
1412 got->add_constant(0);
1413 this->got_mod_index_offset_ = got_offset;
1415 return this->got_mod_index_offset_;
1418 // Optimize the TLS relocation type based on what we know about the
1419 // symbol. IS_FINAL is true if the final address of this symbol is
1420 // known at link time.
1422 static tls::Tls_optimization
1423 optimize_tls_reloc(bool is_final, int r_type)
1425 // If we are generating a shared library, then we can't do anything
1427 if (parameters->options().shared())
1428 return tls::TLSOPT_NONE;
1432 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1433 case elfcpp::R_SPARC_TLS_GD_LO10:
1434 case elfcpp::R_SPARC_TLS_GD_ADD:
1435 case elfcpp::R_SPARC_TLS_GD_CALL:
1436 // These are General-Dynamic which permits fully general TLS
1437 // access. Since we know that we are generating an executable,
1438 // we can convert this to Initial-Exec. If we also know that
1439 // this is a local symbol, we can further switch to Local-Exec.
1441 return tls::TLSOPT_TO_LE;
1442 return tls::TLSOPT_TO_IE;
1444 case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic
1445 case elfcpp::R_SPARC_TLS_LDM_LO10:
1446 case elfcpp::R_SPARC_TLS_LDM_ADD:
1447 case elfcpp::R_SPARC_TLS_LDM_CALL:
1448 // This is Local-Dynamic, which refers to a local symbol in the
1449 // dynamic TLS block. Since we know that we generating an
1450 // executable, we can switch to Local-Exec.
1451 return tls::TLSOPT_TO_LE;
1453 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
1454 case elfcpp::R_SPARC_TLS_LDO_LOX10:
1455 case elfcpp::R_SPARC_TLS_LDO_ADD:
1456 // Another type of Local-Dynamic relocation.
1457 return tls::TLSOPT_TO_LE;
1459 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
1460 case elfcpp::R_SPARC_TLS_IE_LO10:
1461 case elfcpp::R_SPARC_TLS_IE_LD:
1462 case elfcpp::R_SPARC_TLS_IE_LDX:
1463 case elfcpp::R_SPARC_TLS_IE_ADD:
1464 // These are Initial-Exec relocs which get the thread offset
1465 // from the GOT. If we know that we are linking against the
1466 // local symbol, we can switch to Local-Exec, which links the
1467 // thread offset into the instruction.
1469 return tls::TLSOPT_TO_LE;
1470 return tls::TLSOPT_NONE;
1472 case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec
1473 case elfcpp::R_SPARC_TLS_LE_LOX10:
1474 // When we already have Local-Exec, there is nothing further we
1476 return tls::TLSOPT_NONE;
1483 // Generate a PLT entry slot for a call to __tls_get_addr
1484 template<int size, bool big_endian>
1486 Target_sparc<size, big_endian>::Scan::generate_tls_call(Symbol_table* symtab,
1488 Target_sparc<size, big_endian>* target)
1490 Symbol* gsym = target->tls_get_addr_sym(symtab);
1492 target->make_plt_entry(symtab, layout, gsym);
1495 // Report an unsupported relocation against a local symbol.
1497 template<int size, bool big_endian>
1499 Target_sparc<size, big_endian>::Scan::unsupported_reloc_local(
1500 Sized_relobj<size, big_endian>* object,
1501 unsigned int r_type)
1503 gold_error(_("%s: unsupported reloc %u against local symbol"),
1504 object->name().c_str(), r_type);
1507 // We are about to emit a dynamic relocation of type R_TYPE. If the
1508 // dynamic linker does not support it, issue an error.
1510 template<int size, bool big_endian>
1512 Target_sparc<size, big_endian>::Scan::check_non_pic(Relobj* object, unsigned int r_type)
1514 gold_assert(r_type != elfcpp::R_SPARC_NONE);
1520 // These are the relocation types supported by glibc for sparc 64-bit.
1521 case elfcpp::R_SPARC_RELATIVE:
1522 case elfcpp::R_SPARC_COPY:
1523 case elfcpp::R_SPARC_64:
1524 case elfcpp::R_SPARC_GLOB_DAT:
1525 case elfcpp::R_SPARC_JMP_SLOT:
1526 case elfcpp::R_SPARC_TLS_DTPMOD64:
1527 case elfcpp::R_SPARC_TLS_DTPOFF64:
1528 case elfcpp::R_SPARC_TLS_TPOFF64:
1529 case elfcpp::R_SPARC_TLS_LE_HIX22:
1530 case elfcpp::R_SPARC_TLS_LE_LOX10:
1531 case elfcpp::R_SPARC_8:
1532 case elfcpp::R_SPARC_16:
1533 case elfcpp::R_SPARC_DISP8:
1534 case elfcpp::R_SPARC_DISP16:
1535 case elfcpp::R_SPARC_DISP32:
1536 case elfcpp::R_SPARC_WDISP30:
1537 case elfcpp::R_SPARC_LO10:
1538 case elfcpp::R_SPARC_HI22:
1539 case elfcpp::R_SPARC_OLO10:
1540 case elfcpp::R_SPARC_H44:
1541 case elfcpp::R_SPARC_M44:
1542 case elfcpp::R_SPARC_L44:
1543 case elfcpp::R_SPARC_HH22:
1544 case elfcpp::R_SPARC_HM10:
1545 case elfcpp::R_SPARC_LM22:
1546 case elfcpp::R_SPARC_UA16:
1547 case elfcpp::R_SPARC_UA32:
1548 case elfcpp::R_SPARC_UA64:
1559 // These are the relocation types supported by glibc for sparc 32-bit.
1560 case elfcpp::R_SPARC_RELATIVE:
1561 case elfcpp::R_SPARC_COPY:
1562 case elfcpp::R_SPARC_GLOB_DAT:
1563 case elfcpp::R_SPARC_32:
1564 case elfcpp::R_SPARC_JMP_SLOT:
1565 case elfcpp::R_SPARC_TLS_DTPMOD32:
1566 case elfcpp::R_SPARC_TLS_DTPOFF32:
1567 case elfcpp::R_SPARC_TLS_TPOFF32:
1568 case elfcpp::R_SPARC_TLS_LE_HIX22:
1569 case elfcpp::R_SPARC_TLS_LE_LOX10:
1570 case elfcpp::R_SPARC_8:
1571 case elfcpp::R_SPARC_16:
1572 case elfcpp::R_SPARC_DISP8:
1573 case elfcpp::R_SPARC_DISP16:
1574 case elfcpp::R_SPARC_DISP32:
1575 case elfcpp::R_SPARC_LO10:
1576 case elfcpp::R_SPARC_WDISP30:
1577 case elfcpp::R_SPARC_HI22:
1578 case elfcpp::R_SPARC_UA16:
1579 case elfcpp::R_SPARC_UA32:
1587 // This prevents us from issuing more than one error per reloc
1588 // section. But we can still wind up issuing more than one
1589 // error per object file.
1590 if (this->issued_non_pic_error_)
1592 gold_assert(parameters->options().output_is_position_independent());
1593 object->error(_("requires unsupported dynamic reloc; "
1594 "recompile with -fPIC"));
1595 this->issued_non_pic_error_ = true;
1599 // Scan a relocation for a local symbol.
1601 template<int size, bool big_endian>
1603 Target_sparc<size, big_endian>::Scan::local(
1604 Symbol_table* symtab,
1606 Target_sparc<size, big_endian>* target,
1607 Sized_relobj<size, big_endian>* object,
1608 unsigned int data_shndx,
1609 Output_section* output_section,
1610 const elfcpp::Rela<size, big_endian>& reloc,
1611 unsigned int r_type,
1612 const elfcpp::Sym<size, big_endian>& lsym)
1614 unsigned int orig_r_type = r_type;
1619 case elfcpp::R_SPARC_NONE:
1620 case elfcpp::R_SPARC_REGISTER:
1621 case elfcpp::R_SPARC_GNU_VTINHERIT:
1622 case elfcpp::R_SPARC_GNU_VTENTRY:
1625 case elfcpp::R_SPARC_64:
1626 case elfcpp::R_SPARC_32:
1627 // If building a shared library (or a position-independent
1628 // executable), we need to create a dynamic relocation for
1629 // this location. The relocation applied at link time will
1630 // apply the link-time value, so we flag the location with
1631 // an R_SPARC_RELATIVE relocation so the dynamic loader can
1632 // relocate it easily.
1633 if (parameters->options().output_is_position_independent())
1635 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1636 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1637 rela_dyn->add_local_relative(object, r_sym, elfcpp::R_SPARC_RELATIVE,
1638 output_section, data_shndx,
1639 reloc.get_r_offset(),
1640 reloc.get_r_addend());
1644 case elfcpp::R_SPARC_HIX22:
1645 case elfcpp::R_SPARC_LOX10:
1646 case elfcpp::R_SPARC_H44:
1647 case elfcpp::R_SPARC_M44:
1648 case elfcpp::R_SPARC_L44:
1649 case elfcpp::R_SPARC_HH22:
1650 case elfcpp::R_SPARC_HM10:
1651 case elfcpp::R_SPARC_LM22:
1652 case elfcpp::R_SPARC_UA64:
1653 case elfcpp::R_SPARC_UA32:
1654 case elfcpp::R_SPARC_UA16:
1655 case elfcpp::R_SPARC_HI22:
1656 case elfcpp::R_SPARC_LO10:
1657 case elfcpp::R_SPARC_OLO10:
1658 case elfcpp::R_SPARC_16:
1659 case elfcpp::R_SPARC_11:
1660 case elfcpp::R_SPARC_10:
1661 case elfcpp::R_SPARC_8:
1662 case elfcpp::R_SPARC_7:
1663 case elfcpp::R_SPARC_6:
1664 case elfcpp::R_SPARC_5:
1665 // If building a shared library (or a position-independent
1666 // executable), we need to create a dynamic relocation for
1668 if (parameters->options().output_is_position_independent())
1670 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1672 check_non_pic(object, r_type);
1673 if (lsym.get_st_type() != elfcpp::STT_SECTION)
1675 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1676 rela_dyn->add_local(object, r_sym, orig_r_type, output_section,
1677 data_shndx, reloc.get_r_offset(),
1678 reloc.get_r_addend());
1682 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1683 gold_assert(lsym.get_st_value() == 0);
1684 rela_dyn->add_local_relative(object, r_sym, orig_r_type,
1685 output_section, data_shndx,
1686 reloc.get_r_offset(),
1687 reloc.get_r_addend());
1692 case elfcpp::R_SPARC_WDISP30:
1693 case elfcpp::R_SPARC_WDISP22:
1694 case elfcpp::R_SPARC_WDISP19:
1695 case elfcpp::R_SPARC_WDISP16:
1696 case elfcpp::R_SPARC_DISP8:
1697 case elfcpp::R_SPARC_DISP16:
1698 case elfcpp::R_SPARC_DISP32:
1699 case elfcpp::R_SPARC_DISP64:
1700 case elfcpp::R_SPARC_PC10:
1701 case elfcpp::R_SPARC_PC22:
1704 case elfcpp::R_SPARC_GOT10:
1705 case elfcpp::R_SPARC_GOT13:
1706 case elfcpp::R_SPARC_GOT22:
1708 // The symbol requires a GOT entry.
1709 Output_data_got<size, big_endian>* got;
1712 got = target->got_section(symtab, layout);
1713 r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1715 // If we are generating a shared object, we need to add a
1716 // dynamic relocation for this symbol's GOT entry.
1717 if (parameters->options().output_is_position_independent())
1719 if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD))
1721 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1724 off = got->add_constant(0);
1725 object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off);
1726 rela_dyn->add_local_relative(object, r_sym,
1727 elfcpp::R_SPARC_RELATIVE,
1732 got->add_local(object, r_sym, GOT_TYPE_STANDARD);
1736 // These are initial TLS relocs, which are expected when
1738 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1739 case elfcpp::R_SPARC_TLS_GD_LO10:
1740 case elfcpp::R_SPARC_TLS_GD_ADD:
1741 case elfcpp::R_SPARC_TLS_GD_CALL:
1742 case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic
1743 case elfcpp::R_SPARC_TLS_LDM_LO10:
1744 case elfcpp::R_SPARC_TLS_LDM_ADD:
1745 case elfcpp::R_SPARC_TLS_LDM_CALL:
1746 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
1747 case elfcpp::R_SPARC_TLS_LDO_LOX10:
1748 case elfcpp::R_SPARC_TLS_LDO_ADD:
1749 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
1750 case elfcpp::R_SPARC_TLS_IE_LO10:
1751 case elfcpp::R_SPARC_TLS_IE_LD:
1752 case elfcpp::R_SPARC_TLS_IE_LDX:
1753 case elfcpp::R_SPARC_TLS_IE_ADD:
1754 case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec
1755 case elfcpp::R_SPARC_TLS_LE_LOX10:
1757 bool output_is_shared = parameters->options().shared();
1758 const tls::Tls_optimization optimized_type
1759 = optimize_tls_reloc(!output_is_shared, r_type);
1762 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1763 case elfcpp::R_SPARC_TLS_GD_LO10:
1764 case elfcpp::R_SPARC_TLS_GD_ADD:
1765 case elfcpp::R_SPARC_TLS_GD_CALL:
1766 if (optimized_type == tls::TLSOPT_NONE)
1768 // Create a pair of GOT entries for the module index and
1769 // dtv-relative offset.
1770 Output_data_got<size, big_endian>* got
1771 = target->got_section(symtab, layout);
1772 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1773 unsigned int shndx = lsym.get_st_shndx();
1775 shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary);
1777 object->error(_("local symbol %u has bad shndx %u"),
1780 got->add_local_pair_with_rela(object, r_sym,
1781 lsym.get_st_shndx(),
1783 target->rela_dyn_section(layout),
1785 ? elfcpp::R_SPARC_TLS_DTPMOD64
1786 : elfcpp::R_SPARC_TLS_DTPMOD32),
1788 if (r_type == elfcpp::R_SPARC_TLS_GD_CALL)
1789 generate_tls_call(symtab, layout, target);
1791 else if (optimized_type != tls::TLSOPT_TO_LE)
1792 unsupported_reloc_local(object, r_type);
1795 case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic
1796 case elfcpp::R_SPARC_TLS_LDM_LO10:
1797 case elfcpp::R_SPARC_TLS_LDM_ADD:
1798 case elfcpp::R_SPARC_TLS_LDM_CALL:
1799 if (optimized_type == tls::TLSOPT_NONE)
1801 // Create a GOT entry for the module index.
1802 target->got_mod_index_entry(symtab, layout, object);
1804 if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL)
1805 generate_tls_call(symtab, layout, target);
1807 else if (optimized_type != tls::TLSOPT_TO_LE)
1808 unsupported_reloc_local(object, r_type);
1811 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
1812 case elfcpp::R_SPARC_TLS_LDO_LOX10:
1813 case elfcpp::R_SPARC_TLS_LDO_ADD:
1816 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
1817 case elfcpp::R_SPARC_TLS_IE_LO10:
1818 case elfcpp::R_SPARC_TLS_IE_LD:
1819 case elfcpp::R_SPARC_TLS_IE_LDX:
1820 case elfcpp::R_SPARC_TLS_IE_ADD:
1821 layout->set_has_static_tls();
1822 if (optimized_type == tls::TLSOPT_NONE)
1824 // Create a GOT entry for the tp-relative offset.
1825 Output_data_got<size, big_endian>* got
1826 = target->got_section(symtab, layout);
1827 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1829 if (!object->local_has_got_offset(r_sym, GOT_TYPE_TLS_OFFSET))
1831 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1832 unsigned int off = got->add_constant(0);
1834 object->set_local_got_offset(r_sym, GOT_TYPE_TLS_OFFSET,
1836 rela_dyn->add_local_relative(object, r_sym,
1838 elfcpp::R_SPARC_TLS_TPOFF64 :
1839 elfcpp::R_SPARC_TLS_TPOFF32),
1843 else if (optimized_type != tls::TLSOPT_TO_LE)
1844 unsupported_reloc_local(object, r_type);
1847 case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec
1848 case elfcpp::R_SPARC_TLS_LE_LOX10:
1849 layout->set_has_static_tls();
1850 if (output_is_shared)
1852 // We need to create a dynamic relocation.
1853 gold_assert(lsym.get_st_type() != elfcpp::STT_SECTION);
1854 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1855 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1856 rela_dyn->add_local_relative(object, r_sym, r_type,
1857 output_section, data_shndx,
1858 reloc.get_r_offset(), 0);
1865 // These are relocations which should only be seen by the
1866 // dynamic linker, and should never be seen here.
1867 case elfcpp::R_SPARC_COPY:
1868 case elfcpp::R_SPARC_GLOB_DAT:
1869 case elfcpp::R_SPARC_JMP_SLOT:
1870 case elfcpp::R_SPARC_RELATIVE:
1871 case elfcpp::R_SPARC_TLS_DTPMOD64:
1872 case elfcpp::R_SPARC_TLS_DTPMOD32:
1873 case elfcpp::R_SPARC_TLS_DTPOFF64:
1874 case elfcpp::R_SPARC_TLS_DTPOFF32:
1875 case elfcpp::R_SPARC_TLS_TPOFF64:
1876 case elfcpp::R_SPARC_TLS_TPOFF32:
1877 gold_error(_("%s: unexpected reloc %u in object file"),
1878 object->name().c_str(), r_type);
1882 unsupported_reloc_local(object, r_type);
1887 // Report an unsupported relocation against a global symbol.
1889 template<int size, bool big_endian>
1891 Target_sparc<size, big_endian>::Scan::unsupported_reloc_global(
1892 Sized_relobj<size, big_endian>* object,
1893 unsigned int r_type,
1896 gold_error(_("%s: unsupported reloc %u against global symbol %s"),
1897 object->name().c_str(), r_type, gsym->demangled_name().c_str());
1900 // Scan a relocation for a global symbol.
1902 template<int size, bool big_endian>
1904 Target_sparc<size, big_endian>::Scan::global(
1905 Symbol_table* symtab,
1907 Target_sparc<size, big_endian>* target,
1908 Sized_relobj<size, big_endian>* object,
1909 unsigned int data_shndx,
1910 Output_section* output_section,
1911 const elfcpp::Rela<size, big_endian>& reloc,
1912 unsigned int r_type,
1915 unsigned int orig_r_type = r_type;
1917 // A reference to _GLOBAL_OFFSET_TABLE_ implies that we need a got
1918 // section. We check here to avoid creating a dynamic reloc against
1919 // _GLOBAL_OFFSET_TABLE_.
1920 if (!target->has_got_section()
1921 && strcmp(gsym->name(), "_GLOBAL_OFFSET_TABLE_") == 0)
1922 target->got_section(symtab, layout);
1927 case elfcpp::R_SPARC_NONE:
1928 case elfcpp::R_SPARC_REGISTER:
1929 case elfcpp::R_SPARC_GNU_VTINHERIT:
1930 case elfcpp::R_SPARC_GNU_VTENTRY:
1933 case elfcpp::R_SPARC_PLT64:
1934 case elfcpp::R_SPARC_PLT32:
1935 case elfcpp::R_SPARC_HIPLT22:
1936 case elfcpp::R_SPARC_LOPLT10:
1937 case elfcpp::R_SPARC_PCPLT32:
1938 case elfcpp::R_SPARC_PCPLT22:
1939 case elfcpp::R_SPARC_PCPLT10:
1940 case elfcpp::R_SPARC_WPLT30:
1941 // If the symbol is fully resolved, this is just a PC32 reloc.
1942 // Otherwise we need a PLT entry.
1943 if (gsym->final_value_is_known())
1945 // If building a shared library, we can also skip the PLT entry
1946 // if the symbol is defined in the output file and is protected
1948 if (gsym->is_defined()
1949 && !gsym->is_from_dynobj()
1950 && !gsym->is_preemptible())
1952 target->make_plt_entry(symtab, layout, gsym);
1955 case elfcpp::R_SPARC_DISP8:
1956 case elfcpp::R_SPARC_DISP16:
1957 case elfcpp::R_SPARC_DISP32:
1958 case elfcpp::R_SPARC_DISP64:
1959 case elfcpp::R_SPARC_PC_HH22:
1960 case elfcpp::R_SPARC_PC_HM10:
1961 case elfcpp::R_SPARC_PC_LM22:
1962 case elfcpp::R_SPARC_PC10:
1963 case elfcpp::R_SPARC_PC22:
1964 case elfcpp::R_SPARC_WDISP30:
1965 case elfcpp::R_SPARC_WDISP22:
1966 case elfcpp::R_SPARC_WDISP19:
1967 case elfcpp::R_SPARC_WDISP16:
1969 if (gsym->needs_plt_entry())
1970 target->make_plt_entry(symtab, layout, gsym);
1971 // Make a dynamic relocation if necessary.
1972 int flags = Symbol::NON_PIC_REF;
1973 if (gsym->type() == elfcpp::STT_FUNC)
1974 flags |= Symbol::FUNCTION_CALL;
1975 if (gsym->needs_dynamic_reloc(flags))
1977 if (gsym->may_need_copy_reloc())
1979 target->copy_reloc(symtab, layout, object,
1980 data_shndx, output_section, gsym,
1985 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1986 check_non_pic(object, r_type);
1987 rela_dyn->add_global(gsym, orig_r_type, output_section, object,
1988 data_shndx, reloc.get_r_offset(),
1989 reloc.get_r_addend());
1995 case elfcpp::R_SPARC_UA64:
1996 case elfcpp::R_SPARC_64:
1997 case elfcpp::R_SPARC_HIX22:
1998 case elfcpp::R_SPARC_LOX10:
1999 case elfcpp::R_SPARC_H44:
2000 case elfcpp::R_SPARC_M44:
2001 case elfcpp::R_SPARC_L44:
2002 case elfcpp::R_SPARC_HH22:
2003 case elfcpp::R_SPARC_HM10:
2004 case elfcpp::R_SPARC_LM22:
2005 case elfcpp::R_SPARC_HI22:
2006 case elfcpp::R_SPARC_LO10:
2007 case elfcpp::R_SPARC_OLO10:
2008 case elfcpp::R_SPARC_UA32:
2009 case elfcpp::R_SPARC_32:
2010 case elfcpp::R_SPARC_UA16:
2011 case elfcpp::R_SPARC_16:
2012 case elfcpp::R_SPARC_11:
2013 case elfcpp::R_SPARC_10:
2014 case elfcpp::R_SPARC_8:
2015 case elfcpp::R_SPARC_7:
2016 case elfcpp::R_SPARC_6:
2017 case elfcpp::R_SPARC_5:
2019 // Make a PLT entry if necessary.
2020 if (gsym->needs_plt_entry())
2022 target->make_plt_entry(symtab, layout, gsym);
2023 // Since this is not a PC-relative relocation, we may be
2024 // taking the address of a function. In that case we need to
2025 // set the entry in the dynamic symbol table to the address of
2027 if (gsym->is_from_dynobj() && !parameters->options().shared())
2028 gsym->set_needs_dynsym_value();
2030 // Make a dynamic relocation if necessary.
2031 if (gsym->needs_dynamic_reloc(Symbol::ABSOLUTE_REF))
2033 if (gsym->may_need_copy_reloc())
2035 target->copy_reloc(symtab, layout, object,
2036 data_shndx, output_section, gsym, reloc);
2038 else if ((r_type == elfcpp::R_SPARC_32
2039 || r_type == elfcpp::R_SPARC_64)
2040 && gsym->can_use_relative_reloc(false))
2042 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2043 rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE,
2044 output_section, object,
2045 data_shndx, reloc.get_r_offset(),
2046 reloc.get_r_addend());
2050 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2052 check_non_pic(object, r_type);
2053 if (gsym->is_from_dynobj()
2054 || gsym->is_undefined()
2055 || gsym->is_preemptible())
2056 rela_dyn->add_global(gsym, orig_r_type, output_section,
2058 reloc.get_r_offset(),
2059 reloc.get_r_addend());
2061 rela_dyn->add_global_relative(gsym, orig_r_type,
2062 output_section, object,
2064 reloc.get_r_offset(),
2065 reloc.get_r_addend());
2071 case elfcpp::R_SPARC_GOT10:
2072 case elfcpp::R_SPARC_GOT13:
2073 case elfcpp::R_SPARC_GOT22:
2075 // The symbol requires a GOT entry.
2076 Output_data_got<size, big_endian>* got;
2078 got = target->got_section(symtab, layout);
2079 if (gsym->final_value_is_known())
2080 got->add_global(gsym, GOT_TYPE_STANDARD);
2083 // If this symbol is not fully resolved, we need to add a
2084 // dynamic relocation for it.
2085 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2086 if (gsym->is_from_dynobj()
2087 || gsym->is_undefined()
2088 || gsym->is_preemptible())
2089 got->add_global_with_rela(gsym, GOT_TYPE_STANDARD, rela_dyn,
2090 elfcpp::R_SPARC_GLOB_DAT);
2091 else if (!gsym->has_got_offset(GOT_TYPE_STANDARD))
2093 unsigned int off = got->add_constant(0);
2095 gsym->set_got_offset(GOT_TYPE_STANDARD, off);
2096 rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE,
2103 // These are initial tls relocs, which are expected when
2105 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2106 case elfcpp::R_SPARC_TLS_GD_LO10:
2107 case elfcpp::R_SPARC_TLS_GD_ADD:
2108 case elfcpp::R_SPARC_TLS_GD_CALL:
2109 case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic
2110 case elfcpp::R_SPARC_TLS_LDM_LO10:
2111 case elfcpp::R_SPARC_TLS_LDM_ADD:
2112 case elfcpp::R_SPARC_TLS_LDM_CALL:
2113 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
2114 case elfcpp::R_SPARC_TLS_LDO_LOX10:
2115 case elfcpp::R_SPARC_TLS_LDO_ADD:
2116 case elfcpp::R_SPARC_TLS_LE_HIX22:
2117 case elfcpp::R_SPARC_TLS_LE_LOX10:
2118 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
2119 case elfcpp::R_SPARC_TLS_IE_LO10:
2120 case elfcpp::R_SPARC_TLS_IE_LD:
2121 case elfcpp::R_SPARC_TLS_IE_LDX:
2122 case elfcpp::R_SPARC_TLS_IE_ADD:
2124 const bool is_final = gsym->final_value_is_known();
2125 const tls::Tls_optimization optimized_type
2126 = optimize_tls_reloc(is_final, r_type);
2129 case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2130 case elfcpp::R_SPARC_TLS_GD_LO10:
2131 case elfcpp::R_SPARC_TLS_GD_ADD:
2132 case elfcpp::R_SPARC_TLS_GD_CALL:
2133 if (optimized_type == tls::TLSOPT_NONE)
2135 // Create a pair of GOT entries for the module index and
2136 // dtv-relative offset.
2137 Output_data_got<size, big_endian>* got
2138 = target->got_section(symtab, layout);
2139 got->add_global_pair_with_rela(gsym, GOT_TYPE_TLS_PAIR,
2140 target->rela_dyn_section(layout),
2142 elfcpp::R_SPARC_TLS_DTPMOD64 :
2143 elfcpp::R_SPARC_TLS_DTPMOD32),
2145 elfcpp::R_SPARC_TLS_DTPOFF64 :
2146 elfcpp::R_SPARC_TLS_DTPOFF32));
2148 // Emit R_SPARC_WPLT30 against "__tls_get_addr"
2149 if (r_type == elfcpp::R_SPARC_TLS_GD_CALL)
2150 generate_tls_call(symtab, layout, target);
2152 else if (optimized_type == tls::TLSOPT_TO_IE)
2154 // Create a GOT entry for the tp-relative offset.
2155 Output_data_got<size, big_endian>* got
2156 = target->got_section(symtab, layout);
2157 got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET,
2158 target->rela_dyn_section(layout),
2160 elfcpp::R_SPARC_TLS_TPOFF64 :
2161 elfcpp::R_SPARC_TLS_TPOFF32));
2163 else if (optimized_type != tls::TLSOPT_TO_LE)
2164 unsupported_reloc_global(object, r_type, gsym);
2167 case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic
2168 case elfcpp::R_SPARC_TLS_LDM_LO10:
2169 case elfcpp::R_SPARC_TLS_LDM_ADD:
2170 case elfcpp::R_SPARC_TLS_LDM_CALL:
2171 if (optimized_type == tls::TLSOPT_NONE)
2173 // Create a GOT entry for the module index.
2174 target->got_mod_index_entry(symtab, layout, object);
2176 if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL)
2177 generate_tls_call(symtab, layout, target);
2179 else if (optimized_type != tls::TLSOPT_TO_LE)
2180 unsupported_reloc_global(object, r_type, gsym);
2183 case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
2184 case elfcpp::R_SPARC_TLS_LDO_LOX10:
2185 case elfcpp::R_SPARC_TLS_LDO_ADD:
2188 case elfcpp::R_SPARC_TLS_LE_HIX22:
2189 case elfcpp::R_SPARC_TLS_LE_LOX10:
2190 layout->set_has_static_tls();
2191 if (parameters->options().shared())
2193 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2194 rela_dyn->add_global_relative(gsym, orig_r_type,
2195 output_section, object,
2196 data_shndx, reloc.get_r_offset(),
2201 case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
2202 case elfcpp::R_SPARC_TLS_IE_LO10:
2203 case elfcpp::R_SPARC_TLS_IE_LD:
2204 case elfcpp::R_SPARC_TLS_IE_LDX:
2205 case elfcpp::R_SPARC_TLS_IE_ADD:
2206 layout->set_has_static_tls();
2207 if (optimized_type == tls::TLSOPT_NONE)
2209 // Create a GOT entry for the tp-relative offset.
2210 Output_data_got<size, big_endian>* got
2211 = target->got_section(symtab, layout);
2212 got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET,
2213 target->rela_dyn_section(layout),
2215 elfcpp::R_SPARC_TLS_TPOFF64 :
2216 elfcpp::R_SPARC_TLS_TPOFF32));
2218 else if (optimized_type != tls::TLSOPT_TO_LE)
2219 unsupported_reloc_global(object, r_type, gsym);
2225 // These are relocations which should only be seen by the
2226 // dynamic linker, and should never be seen here.
2227 case elfcpp::R_SPARC_COPY:
2228 case elfcpp::R_SPARC_GLOB_DAT:
2229 case elfcpp::R_SPARC_JMP_SLOT:
2230 case elfcpp::R_SPARC_RELATIVE:
2231 case elfcpp::R_SPARC_TLS_DTPMOD64:
2232 case elfcpp::R_SPARC_TLS_DTPMOD32:
2233 case elfcpp::R_SPARC_TLS_DTPOFF64:
2234 case elfcpp::R_SPARC_TLS_DTPOFF32:
2235 case elfcpp::R_SPARC_TLS_TPOFF64:
2236 case elfcpp::R_SPARC_TLS_TPOFF32:
2237 gold_error(_("%s: unexpected reloc %u in object file"),
2238 object->name().c_str(), r_type);
2242 unsupported_reloc_global(object, r_type, gsym);
2247 // Process relocations for gc.
2249 template<int size, bool big_endian>
2251 Target_sparc<size, big_endian>::gc_process_relocs(
2252 Symbol_table* symtab,
2254 Sized_relobj<size, big_endian>* object,
2255 unsigned int data_shndx,
2257 const unsigned char* prelocs,
2259 Output_section* output_section,
2260 bool needs_special_offset_handling,
2261 size_t local_symbol_count,
2262 const unsigned char* plocal_symbols)
2264 typedef Target_sparc<size, big_endian> Sparc;
2265 typedef typename Target_sparc<size, big_endian>::Scan Scan;
2267 gold::gc_process_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>(
2276 needs_special_offset_handling,
2281 // Scan relocations for a section.
2283 template<int size, bool big_endian>
2285 Target_sparc<size, big_endian>::scan_relocs(
2286 Symbol_table* symtab,
2288 Sized_relobj<size, big_endian>* object,
2289 unsigned int data_shndx,
2290 unsigned int sh_type,
2291 const unsigned char* prelocs,
2293 Output_section* output_section,
2294 bool needs_special_offset_handling,
2295 size_t local_symbol_count,
2296 const unsigned char* plocal_symbols)
2298 typedef Target_sparc<size, big_endian> Sparc;
2299 typedef typename Target_sparc<size, big_endian>::Scan Scan;
2301 if (sh_type == elfcpp::SHT_REL)
2303 gold_error(_("%s: unsupported REL reloc section"),
2304 object->name().c_str());
2308 gold::scan_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>(
2317 needs_special_offset_handling,
2322 // Finalize the sections.
2324 template<int size, bool big_endian>
2326 Target_sparc<size, big_endian>::do_finalize_sections(
2328 const Input_objects*,
2331 // Fill in some more dynamic tags.
2332 Output_data_dynamic* const odyn = layout->dynamic_data();
2335 if (this->plt_ != NULL
2336 && this->plt_->output_section() != NULL)
2338 const Output_data* od = this->plt_->rel_plt();
2339 odyn->add_section_size(elfcpp::DT_PLTRELSZ, od);
2340 odyn->add_section_address(elfcpp::DT_JMPREL, od);
2341 odyn->add_constant(elfcpp::DT_PLTREL, elfcpp::DT_RELA);
2343 odyn->add_section_address(elfcpp::DT_PLTGOT, this->plt_);
2346 if (this->rela_dyn_ != NULL
2347 && this->rela_dyn_->output_section() != NULL)
2349 const Output_data* od = this->rela_dyn_;
2350 odyn->add_section_address(elfcpp::DT_RELA, od);
2351 odyn->add_section_size(elfcpp::DT_RELASZ, od);
2352 odyn->add_constant(elfcpp::DT_RELAENT,
2353 elfcpp::Elf_sizes<size>::rela_size);
2356 if (!parameters->options().shared())
2358 // The value of the DT_DEBUG tag is filled in by the dynamic
2359 // linker at run time, and used by the debugger.
2360 odyn->add_constant(elfcpp::DT_DEBUG, 0);
2364 // Emit any relocs we saved in an attempt to avoid generating COPY
2366 if (this->copy_relocs_.any_saved_relocs())
2367 this->copy_relocs_.emit(this->rela_dyn_section(layout));
2370 // Perform a relocation.
2372 template<int size, bool big_endian>
2374 Target_sparc<size, big_endian>::Relocate::relocate(
2375 const Relocate_info<size, big_endian>* relinfo,
2376 Target_sparc* target,
2379 const elfcpp::Rela<size, big_endian>& rela,
2380 unsigned int r_type,
2381 const Sized_symbol<size>* gsym,
2382 const Symbol_value<size>* psymval,
2383 unsigned char* view,
2384 typename elfcpp::Elf_types<size>::Elf_Addr address,
2385 section_size_type view_size)
2389 if (this->ignore_gd_add_)
2391 if (r_type != elfcpp::R_SPARC_TLS_GD_ADD)
2392 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2393 _("missing expected TLS relocation"));
2396 this->ignore_gd_add_ = false;
2401 typedef Sparc_relocate_functions<size, big_endian> Reloc;
2403 // Pick the value to use for symbols defined in shared objects.
2404 Symbol_value<size> symval;
2406 && gsym->use_plt_offset(r_type == elfcpp::R_SPARC_DISP8
2407 || r_type == elfcpp::R_SPARC_DISP16
2408 || r_type == elfcpp::R_SPARC_DISP32
2409 || r_type == elfcpp::R_SPARC_DISP64
2410 || r_type == elfcpp::R_SPARC_PC_HH22
2411 || r_type == elfcpp::R_SPARC_PC_HM10
2412 || r_type == elfcpp::R_SPARC_PC_LM22
2413 || r_type == elfcpp::R_SPARC_PC10
2414 || r_type == elfcpp::R_SPARC_PC22
2415 || r_type == elfcpp::R_SPARC_WDISP30
2416 || r_type == elfcpp::R_SPARC_WDISP22
2417 || r_type == elfcpp::R_SPARC_WDISP19
2418 || r_type == elfcpp::R_SPARC_WDISP16))
2420 elfcpp::Elf_Xword value;
2422 value = target->plt_section()->address() + gsym->plt_offset();
2424 symval.set_output_value(value);
2429 const Sized_relobj<size, big_endian>* object = relinfo->object;
2430 const elfcpp::Elf_Xword addend = rela.get_r_addend();
2432 // Get the GOT offset if needed. Unlike i386 and x86_64, our GOT
2433 // pointer points to the beginning, not the end, of the table.
2434 // So we just use the plain offset.
2435 bool have_got_offset = false;
2436 unsigned int got_offset = 0;
2439 case elfcpp::R_SPARC_GOT10:
2440 case elfcpp::R_SPARC_GOT13:
2441 case elfcpp::R_SPARC_GOT22:
2444 gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD));
2445 got_offset = gsym->got_offset(GOT_TYPE_STANDARD);
2449 unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
2450 gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD));
2451 got_offset = object->local_got_offset(r_sym, GOT_TYPE_STANDARD);
2453 have_got_offset = true;
2462 case elfcpp::R_SPARC_NONE:
2463 case elfcpp::R_SPARC_REGISTER:
2464 case elfcpp::R_SPARC_GNU_VTINHERIT:
2465 case elfcpp::R_SPARC_GNU_VTENTRY:
2468 case elfcpp::R_SPARC_8:
2469 Relocate_functions<size, big_endian>::rela8(view, object,
2473 case elfcpp::R_SPARC_16:
2474 Relocate_functions<size, big_endian>::rela16(view, object,
2478 case elfcpp::R_SPARC_32:
2479 if (!parameters->options().output_is_position_independent())
2480 Relocate_functions<size, big_endian>::rela32(view, object,
2484 case elfcpp::R_SPARC_DISP8:
2485 Reloc::disp8(view, object, psymval, addend, address);
2488 case elfcpp::R_SPARC_DISP16:
2489 Reloc::disp16(view, object, psymval, addend, address);
2492 case elfcpp::R_SPARC_DISP32:
2493 Reloc::disp32(view, object, psymval, addend, address);
2496 case elfcpp::R_SPARC_DISP64:
2497 Reloc::disp64(view, object, psymval, addend, address);
2500 case elfcpp::R_SPARC_WDISP30:
2501 case elfcpp::R_SPARC_WPLT30:
2502 Reloc::wdisp30(view, object, psymval, addend, address);
2505 case elfcpp::R_SPARC_WDISP22:
2506 Reloc::wdisp22(view, object, psymval, addend, address);
2509 case elfcpp::R_SPARC_WDISP19:
2510 Reloc::wdisp19(view, object, psymval, addend, address);
2513 case elfcpp::R_SPARC_WDISP16:
2514 Reloc::wdisp16(view, object, psymval, addend, address);
2517 case elfcpp::R_SPARC_HI22:
2518 Reloc::hi22(view, object, psymval, addend);
2521 case elfcpp::R_SPARC_22:
2522 Reloc::rela32_22(view, object, psymval, addend);
2525 case elfcpp::R_SPARC_13:
2526 Reloc::rela32_13(view, object, psymval, addend);
2529 case elfcpp::R_SPARC_LO10:
2530 Reloc::lo10(view, object, psymval, addend);
2533 case elfcpp::R_SPARC_GOT10:
2534 Reloc::lo10(view, got_offset, addend);
2537 case elfcpp::R_SPARC_GOT13:
2538 Reloc::rela32_13(view, got_offset, addend);
2541 case elfcpp::R_SPARC_GOT22:
2542 Reloc::hi22(view, got_offset, addend);
2545 case elfcpp::R_SPARC_PC10:
2546 Reloc::pc10(view, object, psymval, addend, address);
2549 case elfcpp::R_SPARC_PC22:
2550 Reloc::pc22(view, object, psymval, addend, address);
2553 case elfcpp::R_SPARC_TLS_DTPOFF32:
2554 case elfcpp::R_SPARC_UA32:
2555 Reloc::ua32(view, object, psymval, addend);
2558 case elfcpp::R_SPARC_PLT64:
2559 Relocate_functions<size, big_endian>::rela64(view, object,
2563 case elfcpp::R_SPARC_PLT32:
2564 Relocate_functions<size, big_endian>::rela32(view, object,
2568 case elfcpp::R_SPARC_HIPLT22:
2569 Reloc::hi22(view, object, psymval, addend);
2572 case elfcpp::R_SPARC_LOPLT10:
2573 Reloc::lo10(view, object, psymval, addend);
2576 case elfcpp::R_SPARC_PCPLT32:
2577 Reloc::disp32(view, object, psymval, addend, address);
2580 case elfcpp::R_SPARC_PCPLT22:
2581 Reloc::pcplt22(view, object, psymval, addend, address);
2584 case elfcpp::R_SPARC_PCPLT10:
2585 Reloc::lo10(view, object, psymval, addend, address);
2588 case elfcpp::R_SPARC_64:
2589 if (!parameters->options().output_is_position_independent())
2590 Relocate_functions<size, big_endian>::rela64(view, object,
2594 case elfcpp::R_SPARC_OLO10:
2596 unsigned int addend2 = rela.get_r_info() & 0xffffffff;
2597 addend2 = ((addend2 >> 8) ^ 0x800000) - 0x800000;
2598 Reloc::olo10(view, object, psymval, addend, addend2);
2602 case elfcpp::R_SPARC_HH22:
2603 Reloc::hh22(view, object, psymval, addend);
2606 case elfcpp::R_SPARC_PC_HH22:
2607 Reloc::pc_hh22(view, object, psymval, addend, address);
2610 case elfcpp::R_SPARC_HM10:
2611 Reloc::hm10(view, object, psymval, addend);
2614 case elfcpp::R_SPARC_PC_HM10:
2615 Reloc::pc_hm10(view, object, psymval, addend, address);
2618 case elfcpp::R_SPARC_LM22:
2619 Reloc::hi22(view, object, psymval, addend);
2622 case elfcpp::R_SPARC_PC_LM22:
2623 Reloc::pcplt22(view, object, psymval, addend, address);
2626 case elfcpp::R_SPARC_11:
2627 Reloc::rela32_11(view, object, psymval, addend);
2630 case elfcpp::R_SPARC_10:
2631 Reloc::rela32_10(view, object, psymval, addend);
2634 case elfcpp::R_SPARC_7:
2635 Reloc::rela32_7(view, object, psymval, addend);
2638 case elfcpp::R_SPARC_6:
2639 Reloc::rela32_6(view, object, psymval, addend);
2642 case elfcpp::R_SPARC_5:
2643 Reloc::rela32_5(view, object, psymval, addend);
2646 case elfcpp::R_SPARC_HIX22:
2647 Reloc::hix22(view, object, psymval, addend);
2650 case elfcpp::R_SPARC_LOX10:
2651 Reloc::lox10(view, object, psymval, addend);
2654 case elfcpp::R_SPARC_H44:
2655 Reloc::h44(view, object, psymval, addend);
2658 case elfcpp::R_SPARC_M44:
2659 Reloc::m44(view, object, psymval, addend);
2662 case elfcpp::R_SPARC_L44:
2663 Reloc::l44(view, object, psymval, addend);
2666 case elfcpp::R_SPARC_TLS_DTPOFF64:
2667 case elfcpp::R_SPARC_UA64:
2668 Reloc::ua64(view, object, psymval, addend);
2671 case elfcpp::R_SPARC_UA16:
2672 Reloc::ua16(view, object, psymval, addend);
2675 case elfcpp::R_SPARC_TLS_GD_HI22:
2676 case elfcpp::R_SPARC_TLS_GD_LO10:
2677 case elfcpp::R_SPARC_TLS_GD_ADD:
2678 case elfcpp::R_SPARC_TLS_GD_CALL:
2679 case elfcpp::R_SPARC_TLS_LDM_HI22:
2680 case elfcpp::R_SPARC_TLS_LDM_LO10:
2681 case elfcpp::R_SPARC_TLS_LDM_ADD:
2682 case elfcpp::R_SPARC_TLS_LDM_CALL:
2683 case elfcpp::R_SPARC_TLS_LDO_HIX22:
2684 case elfcpp::R_SPARC_TLS_LDO_LOX10:
2685 case elfcpp::R_SPARC_TLS_LDO_ADD:
2686 case elfcpp::R_SPARC_TLS_IE_HI22:
2687 case elfcpp::R_SPARC_TLS_IE_LO10:
2688 case elfcpp::R_SPARC_TLS_IE_LD:
2689 case elfcpp::R_SPARC_TLS_IE_LDX:
2690 case elfcpp::R_SPARC_TLS_IE_ADD:
2691 case elfcpp::R_SPARC_TLS_LE_HIX22:
2692 case elfcpp::R_SPARC_TLS_LE_LOX10:
2693 this->relocate_tls(relinfo, target, relnum, rela,
2694 r_type, gsym, psymval, view,
2695 address, view_size);
2698 case elfcpp::R_SPARC_COPY:
2699 case elfcpp::R_SPARC_GLOB_DAT:
2700 case elfcpp::R_SPARC_JMP_SLOT:
2701 case elfcpp::R_SPARC_RELATIVE:
2702 // These are outstanding tls relocs, which are unexpected when
2704 case elfcpp::R_SPARC_TLS_DTPMOD64:
2705 case elfcpp::R_SPARC_TLS_DTPMOD32:
2706 case elfcpp::R_SPARC_TLS_TPOFF64:
2707 case elfcpp::R_SPARC_TLS_TPOFF32:
2708 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2709 _("unexpected reloc %u in object file"),
2714 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2715 _("unsupported reloc %u"),
2723 // Perform a TLS relocation.
2725 template<int size, bool big_endian>
2727 Target_sparc<size, big_endian>::Relocate::relocate_tls(
2728 const Relocate_info<size, big_endian>* relinfo,
2729 Target_sparc<size, big_endian>* target,
2731 const elfcpp::Rela<size, big_endian>& rela,
2732 unsigned int r_type,
2733 const Sized_symbol<size>* gsym,
2734 const Symbol_value<size>* psymval,
2735 unsigned char* view,
2736 typename elfcpp::Elf_types<size>::Elf_Addr address,
2739 Output_segment* tls_segment = relinfo->layout->tls_segment();
2740 typedef Sparc_relocate_functions<size, big_endian> Reloc;
2741 const Sized_relobj<size, big_endian>* object = relinfo->object;
2742 typedef typename elfcpp::Swap<32, true>::Valtype Insntype;
2744 const elfcpp::Elf_Xword addend = rela.get_r_addend();
2745 typename elfcpp::Elf_types<size>::Elf_Addr value = psymval->value(object, 0);
2747 const bool is_final =
2749 ? !parameters->options().output_is_position_independent()
2750 : gsym->final_value_is_known());
2751 const tls::Tls_optimization optimized_type
2752 = optimize_tls_reloc(is_final, r_type);
2756 case elfcpp::R_SPARC_TLS_GD_HI22:
2757 case elfcpp::R_SPARC_TLS_GD_LO10:
2758 case elfcpp::R_SPARC_TLS_GD_ADD:
2759 case elfcpp::R_SPARC_TLS_GD_CALL:
2760 if (optimized_type == tls::TLSOPT_TO_LE)
2762 Insntype* wv = reinterpret_cast<Insntype*>(view);
2765 value -= tls_segment->memsz();
2769 case elfcpp::R_SPARC_TLS_GD_HI22:
2770 // TLS_GD_HI22 --> TLS_LE_HIX22
2771 Reloc::hix22(view, value, addend);
2774 case elfcpp::R_SPARC_TLS_GD_LO10:
2775 // TLS_GD_LO10 --> TLS_LE_LOX10
2776 Reloc::lox10(view, value, addend);
2779 case elfcpp::R_SPARC_TLS_GD_ADD:
2780 // add %reg1, %reg2, %reg3 --> mov %g7, %reg2, %reg3
2781 val = elfcpp::Swap<32, true>::readval(wv);
2782 val = (val & ~0x7c000) | 0x1c000;
2783 elfcpp::Swap<32, true>::writeval(wv, val);
2785 case elfcpp::R_SPARC_TLS_GD_CALL:
2786 // call __tls_get_addr --> nop
2787 elfcpp::Swap<32, true>::writeval(wv, sparc_nop);
2794 unsigned int got_type = (optimized_type == tls::TLSOPT_TO_IE
2795 ? GOT_TYPE_TLS_OFFSET
2796 : GOT_TYPE_TLS_PAIR);
2799 gold_assert(gsym->has_got_offset(got_type));
2800 value = gsym->got_offset(got_type);
2804 unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
2805 gold_assert(object->local_has_got_offset(r_sym, got_type));
2806 value = object->local_got_offset(r_sym, got_type);
2808 if (optimized_type == tls::TLSOPT_TO_IE)
2810 Insntype* wv = reinterpret_cast<Insntype*>(view);
2815 case elfcpp::R_SPARC_TLS_GD_HI22:
2816 // TLS_GD_HI22 --> TLS_IE_HI22
2817 Reloc::hi22(view, value, addend);
2820 case elfcpp::R_SPARC_TLS_GD_LO10:
2821 // TLS_GD_LO10 --> TLS_IE_LO10
2822 Reloc::lo10(view, value, addend);
2825 case elfcpp::R_SPARC_TLS_GD_ADD:
2826 // add %reg1, %reg2, %reg3 --> ld [%reg1 + %reg2], %reg3
2827 val = elfcpp::Swap<32, true>::readval(wv);
2834 elfcpp::Swap<32, true>::writeval(wv, val);
2837 case elfcpp::R_SPARC_TLS_GD_CALL:
2838 // The compiler can put the TLS_GD_ADD instruction
2839 // into the delay slot of the call. If so, we need
2840 // to transpose the two instructions so that the
2841 // the new sequence works properly.
2843 // The test we use is if the instruction in the
2844 // delay slot is an add with destination register
2846 val = elfcpp::Swap<32, true>::readval(wv + 1);
2847 if ((val & 0x81f80000) == 0x80000000
2848 && ((val >> 25) & 0x1f) == 0x8)
2855 elfcpp::Swap<32, true>::writeval(wv, val);
2858 this->ignore_gd_add_ = true;
2861 // call __tls_get_addr --> add %g7, %o0, %o0
2862 elfcpp::Swap<32, true>::writeval(wv, 0x9001c008);
2867 else if (optimized_type == tls::TLSOPT_NONE)
2871 case elfcpp::R_SPARC_TLS_GD_HI22:
2872 Reloc::hi22(view, value, addend);
2874 case elfcpp::R_SPARC_TLS_GD_LO10:
2875 Reloc::lo10(view, value, addend);
2877 case elfcpp::R_SPARC_TLS_GD_ADD:
2879 case elfcpp::R_SPARC_TLS_GD_CALL:
2881 Symbol_value<size> symval;
2882 elfcpp::Elf_Xword value;
2885 tsym = target->tls_get_addr_sym_;
2887 value = (target->plt_section()->address() +
2888 tsym->plt_offset());
2889 symval.set_output_value(value);
2890 Reloc::wdisp30(view, object, &symval, addend, address);
2897 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2898 _("unsupported reloc %u"),
2902 case elfcpp::R_SPARC_TLS_LDM_HI22:
2903 case elfcpp::R_SPARC_TLS_LDM_LO10:
2904 case elfcpp::R_SPARC_TLS_LDM_ADD:
2905 case elfcpp::R_SPARC_TLS_LDM_CALL:
2906 if (optimized_type == tls::TLSOPT_TO_LE)
2908 Insntype* wv = reinterpret_cast<Insntype*>(view);
2912 case elfcpp::R_SPARC_TLS_LDM_HI22:
2913 case elfcpp::R_SPARC_TLS_LDM_LO10:
2914 case elfcpp::R_SPARC_TLS_LDM_ADD:
2915 elfcpp::Swap<32, true>::writeval(wv, sparc_nop);
2918 case elfcpp::R_SPARC_TLS_LDM_CALL:
2919 elfcpp::Swap<32, true>::writeval(wv, sparc_mov_g0_o0);
2924 else if (optimized_type == tls::TLSOPT_NONE)
2926 // Relocate the field with the offset of the GOT entry for
2927 // the module index.
2928 unsigned int got_offset;
2930 got_offset = target->got_mod_index_entry(NULL, NULL, NULL);
2933 case elfcpp::R_SPARC_TLS_LDM_HI22:
2934 Reloc::hi22(view, got_offset, addend);
2936 case elfcpp::R_SPARC_TLS_LDM_LO10:
2937 Reloc::lo10(view, got_offset, addend);
2939 case elfcpp::R_SPARC_TLS_LDM_ADD:
2941 case elfcpp::R_SPARC_TLS_LDM_CALL:
2943 Symbol_value<size> symval;
2944 elfcpp::Elf_Xword value;
2947 tsym = target->tls_get_addr_sym_;
2949 value = (target->plt_section()->address() +
2950 tsym->plt_offset());
2951 symval.set_output_value(value);
2952 Reloc::wdisp30(view, object, &symval, addend, address);
2958 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2959 _("unsupported reloc %u"),
2963 // These relocs can appear in debugging sections, in which case
2964 // we won't see the TLS_LDM relocs. The local_dynamic_type
2965 // field tells us this.
2966 case elfcpp::R_SPARC_TLS_LDO_HIX22:
2967 if (optimized_type == tls::TLSOPT_TO_LE)
2969 value -= tls_segment->memsz();
2970 Reloc::hix22(view, value, addend);
2973 Reloc::ldo_hix22(view, value, addend);
2975 case elfcpp::R_SPARC_TLS_LDO_LOX10:
2976 if (optimized_type == tls::TLSOPT_TO_LE)
2978 value -= tls_segment->memsz();
2979 Reloc::lox10(view, value, addend);
2982 Reloc::ldo_lox10(view, value, addend);
2984 case elfcpp::R_SPARC_TLS_LDO_ADD:
2985 if (optimized_type == tls::TLSOPT_TO_LE)
2987 Insntype* wv = reinterpret_cast<Insntype*>(view);
2990 // add %reg1, %reg2, %reg3 --> add %g7, %reg2, %reg3
2991 val = elfcpp::Swap<32, true>::readval(wv);
2992 val = (val & ~0x7c000) | 0x1c000;
2993 elfcpp::Swap<32, true>::writeval(wv, val);
2997 // When optimizing IE --> LE, the only relocation that is handled
2998 // differently is R_SPARC_TLS_IE_LD, it is rewritten from
2999 // 'ld{,x} [rs1 + rs2], rd' into 'mov rs2, rd' or simply a NOP is
3000 // rs2 and rd are the same.
3001 case elfcpp::R_SPARC_TLS_IE_LD:
3002 case elfcpp::R_SPARC_TLS_IE_LDX:
3003 if (optimized_type == tls::TLSOPT_TO_LE)
3005 Insntype* wv = reinterpret_cast<Insntype*>(view);
3006 Insntype val = elfcpp::Swap<32, true>::readval(wv);
3007 Insntype rs2 = val & 0x1f;
3008 Insntype rd = (val >> 25) & 0x1f;
3013 val = sparc_mov | (val & 0x3e00001f);
3015 elfcpp::Swap<32, true>::writeval(wv, val);
3019 case elfcpp::R_SPARC_TLS_IE_HI22:
3020 case elfcpp::R_SPARC_TLS_IE_LO10:
3021 if (optimized_type == tls::TLSOPT_TO_LE)
3023 value -= tls_segment->memsz();
3026 case elfcpp::R_SPARC_TLS_IE_HI22:
3027 // IE_HI22 --> LE_HIX22
3028 Reloc::hix22(view, value, addend);
3030 case elfcpp::R_SPARC_TLS_IE_LO10:
3031 // IE_LO10 --> LE_LOX10
3032 Reloc::lox10(view, value, addend);
3037 else if (optimized_type == tls::TLSOPT_NONE)
3039 // Relocate the field with the offset of the GOT entry for
3040 // the tp-relative offset of the symbol.
3043 gold_assert(gsym->has_got_offset(GOT_TYPE_TLS_OFFSET));
3044 value = gsym->got_offset(GOT_TYPE_TLS_OFFSET);
3048 unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
3049 gold_assert(object->local_has_got_offset(r_sym,
3050 GOT_TYPE_TLS_OFFSET));
3051 value = object->local_got_offset(r_sym,
3052 GOT_TYPE_TLS_OFFSET);
3056 case elfcpp::R_SPARC_TLS_IE_HI22:
3057 Reloc::hi22(view, value, addend);
3059 case elfcpp::R_SPARC_TLS_IE_LO10:
3060 Reloc::lo10(view, value, addend);
3065 gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
3066 _("unsupported reloc %u"),
3070 case elfcpp::R_SPARC_TLS_IE_ADD:
3071 // This seems to be mainly so that we can find the addition
3072 // instruction if there is one. There doesn't seem to be any
3073 // actual relocation to apply.
3076 case elfcpp::R_SPARC_TLS_LE_HIX22:
3077 // If we're creating a shared library, a dynamic relocation will
3078 // have been created for this location, so do not apply it now.
3079 if (!parameters->options().shared())
3081 value -= tls_segment->memsz();
3082 Reloc::hix22(view, value, addend);
3086 case elfcpp::R_SPARC_TLS_LE_LOX10:
3087 // If we're creating a shared library, a dynamic relocation will
3088 // have been created for this location, so do not apply it now.
3089 if (!parameters->options().shared())
3091 value -= tls_segment->memsz();
3092 Reloc::lox10(view, value, addend);
3098 // Relocate section data.
3100 template<int size, bool big_endian>
3102 Target_sparc<size, big_endian>::relocate_section(
3103 const Relocate_info<size, big_endian>* relinfo,
3104 unsigned int sh_type,
3105 const unsigned char* prelocs,
3107 Output_section* output_section,
3108 bool needs_special_offset_handling,
3109 unsigned char* view,
3110 typename elfcpp::Elf_types<size>::Elf_Addr address,
3111 section_size_type view_size,
3112 const Reloc_symbol_changes* reloc_symbol_changes)
3114 typedef Target_sparc<size, big_endian> Sparc;
3115 typedef typename Target_sparc<size, big_endian>::Relocate Sparc_relocate;
3117 gold_assert(sh_type == elfcpp::SHT_RELA);
3119 gold::relocate_section<size, big_endian, Sparc, elfcpp::SHT_RELA,
3126 needs_special_offset_handling,
3130 reloc_symbol_changes);
3133 // Return the size of a relocation while scanning during a relocatable
3136 template<int size, bool big_endian>
3138 Target_sparc<size, big_endian>::Relocatable_size_for_reloc::get_size_for_reloc(
3142 // We are always SHT_RELA, so we should never get here.
3147 // Scan the relocs during a relocatable link.
3149 template<int size, bool big_endian>
3151 Target_sparc<size, big_endian>::scan_relocatable_relocs(
3152 Symbol_table* symtab,
3154 Sized_relobj<size, big_endian>* object,
3155 unsigned int data_shndx,
3156 unsigned int sh_type,
3157 const unsigned char* prelocs,
3159 Output_section* output_section,
3160 bool needs_special_offset_handling,
3161 size_t local_symbol_count,
3162 const unsigned char* plocal_symbols,
3163 Relocatable_relocs* rr)
3165 gold_assert(sh_type == elfcpp::SHT_RELA);
3167 typedef gold::Default_scan_relocatable_relocs<elfcpp::SHT_RELA,
3168 Relocatable_size_for_reloc> Scan_relocatable_relocs;
3170 gold::scan_relocatable_relocs<size, big_endian, elfcpp::SHT_RELA,
3171 Scan_relocatable_relocs>(
3179 needs_special_offset_handling,
3185 // Relocate a section during a relocatable link.
3187 template<int size, bool big_endian>
3189 Target_sparc<size, big_endian>::relocate_for_relocatable(
3190 const Relocate_info<size, big_endian>* relinfo,
3191 unsigned int sh_type,
3192 const unsigned char* prelocs,
3194 Output_section* output_section,
3195 off_t offset_in_output_section,
3196 const Relocatable_relocs* rr,
3197 unsigned char* view,
3198 typename elfcpp::Elf_types<size>::Elf_Addr view_address,
3199 section_size_type view_size,
3200 unsigned char* reloc_view,
3201 section_size_type reloc_view_size)
3203 gold_assert(sh_type == elfcpp::SHT_RELA);
3205 gold::relocate_for_relocatable<size, big_endian, elfcpp::SHT_RELA>(
3210 offset_in_output_section,
3219 // Return the value to use for a dynamic which requires special
3220 // treatment. This is how we support equality comparisons of function
3221 // pointers across shared library boundaries, as described in the
3222 // processor specific ABI supplement.
3224 template<int size, bool big_endian>
3226 Target_sparc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const
3228 gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset());
3229 return this->plt_section()->address() + gsym->plt_offset();
3232 // The selector for sparc object files.
3234 template<int size, bool big_endian>
3235 class Target_selector_sparc : public Target_selector
3238 Target_selector_sparc()
3239 : Target_selector(elfcpp::EM_NONE, size, big_endian,
3240 (size == 64 ? "elf64-sparc" : "elf32-sparc"))
3243 Target* do_recognize(int machine, int, int)
3248 if (machine != elfcpp::EM_SPARCV9)
3253 if (machine != elfcpp::EM_SPARC
3254 && machine != elfcpp::EM_SPARC32PLUS)
3262 return this->instantiate_target();
3265 Target* do_instantiate_target()
3266 { return new Target_sparc<size, big_endian>(); }
3269 Target_selector_sparc<32, true> target_selector_sparc32;
3270 Target_selector_sparc<64, true> target_selector_sparc64;
3272 } // End anonymous namespace.