gold/sparc.cc

   1 // sparc.cc -- sparc target support for gold.
   2
   3 // Copyright 2008, 2009 Free Software Foundation, Inc.
   4 // Written by David S. Miller <davem@davemloft.net>.
   5
   6 // This file is part of gold.
   7
   8 // This program is free software; you can redistribute it and/or modify
   9 // it under the terms of the GNU General Public License as published by
  10 // the Free Software Foundation; either version 3 of the License, or
  11 // (at your option) any later version.
  12
  13 // This program is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17
  18 // You should have received a copy of the GNU General Public License
  19 // along with this program; if not, write to the Free Software
  20 // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  21 // MA 02110-1301, USA.
  22
  23 #include "gold.h"
  24
  25 #include <cstdlib>
  26 #include <cstdio>
  27 #include <cstring>
  28
  29 #include "elfcpp.h"
  30 #include "parameters.h"
  31 #include "reloc.h"
  32 #include "sparc.h"
  33 #include "object.h"
  34 #include "symtab.h"
  35 #include "layout.h"
  36 #include "output.h"
  37 #include "copy-relocs.h"
  38 #include "target.h"
  39 #include "target-reloc.h"
  40 #include "target-select.h"
  41 #include "tls.h"
  42 #include "errors.h"
  43
  44 namespace
  45 {
  46
  47 using namespace gold;
  48
  49 template<int size, bool big_endian>
  50 class Output_data_plt_sparc;
  51
  52 template<int size, bool big_endian>
  53 class Target_sparc : public Sized_target<size, big_endian>
  54 {
  55  public:
  56   typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section;
  57
  58   Target_sparc()
  59     : Sized_target<size, big_endian>(&sparc_info),
  60       got_(NULL), plt_(NULL), rela_dyn_(NULL),
  61       copy_relocs_(elfcpp::R_SPARC_COPY), dynbss_(NULL),
  62       got_mod_index_offset_(-1U), tls_get_addr_sym_(NULL)
  63   {
  64   }
  65
  66   // Process the relocations to determine unreferenced sections for
  67   // garbage collection.
  68   void
  69   gc_process_relocs(const General_options& options,
  70                     Symbol_table* symtab,
  71                     Layout* layout,
  72                     Sized_relobj<size, big_endian>* object,
  73                     unsigned int data_shndx,
  74                     unsigned int sh_type,
  75                     const unsigned char* prelocs,
  76                     size_t reloc_count,
  77                     Output_section* output_section,
  78                     bool needs_special_offset_handling,
  79                     size_t local_symbol_count,
  80                     const unsigned char* plocal_symbols);
  81
  82   // Scan the relocations to look for symbol adjustments.
  83   void
  84   scan_relocs(const General_options& options,
  85               Symbol_table* symtab,
  86               Layout* layout,
  87               Sized_relobj<size, big_endian>* object,
  88               unsigned int data_shndx,
  89               unsigned int sh_type,
  90               const unsigned char* prelocs,
  91               size_t reloc_count,
  92               Output_section* output_section,
  93               bool needs_special_offset_handling,
  94               size_t local_symbol_count,
  95               const unsigned char* plocal_symbols);
  96   // Finalize the sections.
  97   void
  98   do_finalize_sections(Layout*);
  99
 100   // Return the value to use for a dynamic which requires special
 101   // treatment.
 102   uint64_t
 103   do_dynsym_value(const Symbol*) const;
 104
 105   // Relocate a section.
 106   void
 107   relocate_section(const Relocate_info<size, big_endian>*,
 108                    unsigned int sh_type,
 109                    const unsigned char* prelocs,
 110                    size_t reloc_count,
 111                    Output_section* output_section,
 112                    bool needs_special_offset_handling,
 113                    unsigned char* view,
 114                    typename elfcpp::Elf_types<size>::Elf_Addr view_address,
 115                    section_size_type view_size);
 116
 117   // Scan the relocs during a relocatable link.
 118   void
 119   scan_relocatable_relocs(const General_options& options,
 120                           Symbol_table* symtab,
 121                           Layout* layout,
 122                           Sized_relobj<size, big_endian>* object,
 123                           unsigned int data_shndx,
 124                           unsigned int sh_type,
 125                           const unsigned char* prelocs,
 126                           size_t reloc_count,
 127                           Output_section* output_section,
 128                           bool needs_special_offset_handling,
 129                           size_t local_symbol_count,
 130                           const unsigned char* plocal_symbols,
 131                           Relocatable_relocs*);
 132
 133   // Relocate a section during a relocatable link.
 134   void
 135   relocate_for_relocatable(const Relocate_info<size, big_endian>*,
 136                            unsigned int sh_type,
 137                            const unsigned char* prelocs,
 138                            size_t reloc_count,
 139                            Output_section* output_section,
 140                            off_t offset_in_output_section,
 141                            const Relocatable_relocs*,
 142                            unsigned char* view,
 143                            typename elfcpp::Elf_types<size>::Elf_Addr view_address,
 144                            section_size_type view_size,
 145                            unsigned char* reloc_view,
 146                            section_size_type reloc_view_size);
 147   // Return whether SYM is defined by the ABI.
 148   bool
 149   do_is_defined_by_abi(const Symbol* sym) const
 150   {
 151     // XXX Really need to support this better...
 152     if (sym->type() == elfcpp::STT_SPARC_REGISTER)
 153       return 1;
 154
 155     return strcmp(sym->name(), "___tls_get_addr") == 0;
 156   }
 157
 158   // Return whether there is a GOT section.
 159   bool
 160   has_got_section() const
 161   { return this->got_ != NULL; }
 162
 163   // Return the size of the GOT section.
 164   section_size_type
 165   got_size()
 166   {
 167     gold_assert(this->got_ != NULL);
 168     return this->got_->data_size();
 169   }
 170
 171  private:
 172
 173   // The class which scans relocations.
 174   class Scan
 175   {
 176   public:
 177     Scan()
 178       : issued_non_pic_error_(false)
 179     { }
 180
 181     inline void
 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);
 189
 190     inline void
 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,
 197            Symbol* gsym);
 198
 199   private:
 200     static void
 201     unsupported_reloc_local(Sized_relobj<size, big_endian>*,
 202                             unsigned int r_type);
 203
 204     static void
 205     unsupported_reloc_global(Sized_relobj<size, big_endian>*,
 206                              unsigned int r_type, Symbol*);
 207
 208     static void
 209     generate_tls_call(Symbol_table* symtab, Layout* layout,
 210                       Target_sparc* target);
 211
 212     void
 213     check_non_pic(Relobj*, unsigned int r_type);
 214
 215     // Whether we have issued an error about a non-PIC compilation.
 216     bool issued_non_pic_error_;
 217   };
 218
 219   // The class which implements relocation.
 220   class Relocate
 221   {
 222    public:
 223     Relocate()
 224       : ignore_gd_add_(false)
 225     { }
 226
 227     ~Relocate()
 228     {
 229       if (this->ignore_gd_add_)
 230         {
 231           // FIXME: This needs to specify the location somehow.
 232           gold_error(_("missing expected TLS relocation"));
 233         }
 234     }
 235
 236     // Do a relocation.  Return false if the caller should not issue
 237     // any warnings about this relocation.
 238     inline bool
 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>*,
 244              unsigned char*,
 245              typename elfcpp::Elf_types<size>::Elf_Addr,
 246              section_size_type);
 247
 248    private:
 249     // Do a TLS relocation.
 250     inline void
 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>*,
 255                  unsigned char*,
 256                  typename elfcpp::Elf_types<size>::Elf_Addr,
 257                  section_size_type);
 258
 259     // Ignore the next relocation which should be R_SPARC_TLS_GD_ADD
 260     bool ignore_gd_add_;
 261   };
 262
 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
 266   {
 267    public:
 268     unsigned int
 269     get_size_for_reloc(unsigned int, Relobj*);
 270   };
 271
 272   // Get the GOT section, creating it if necessary.
 273   Output_data_got<size, big_endian>*
 274   got_section(Symbol_table*, Layout*);
 275
 276   // Create a PLT entry for a global symbol.
 277   void
 278   make_plt_entry(Symbol_table*, Layout*, Symbol*);
 279
 280   // Create a GOT entry for the TLS module index.
 281   unsigned int
 282   got_mod_index_entry(Symbol_table* symtab, Layout* layout,
 283                       Sized_relobj<size, big_endian>* object);
 284
 285   // Return the gsym for "__tls_get_addr".  Cache if not already
 286   // cached.
 287   Symbol*
 288   tls_get_addr_sym(Symbol_table* symtab)
 289   {
 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_;
 294   }
 295
 296   // Get the PLT section.
 297   const Output_data_plt_sparc<size, big_endian>*
 298   plt_section() const
 299   {
 300     gold_assert(this->plt_ != NULL);
 301     return this->plt_;
 302   }
 303
 304   // Get the dynamic reloc section, creating it if necessary.
 305   Reloc_section*
 306   rela_dyn_section(Layout*);
 307
 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.
 311   bool
 312   may_need_copy_reloc(Symbol* gsym)
 313   {
 314     return (!parameters->options().shared()
 315             && gsym->is_from_dynobj()
 316             && gsym->type() != elfcpp::STT_FUNC);
 317   }
 318
 319   // Copy a relocation against a global symbol.
 320   void
 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)
 325   {
 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));
 330   }
 331
 332   // Information about this specific target which we pass to the
 333   // general Target structure.
 334   static Target::Target_info sparc_info;
 335
 336   // The types of GOT entries needed for this platform.
 337   enum Got_type
 338   {
 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
 342   };
 343
 344   // The GOT section.
 345   Output_data_got<size, big_endian>* got_;
 346   // The PLT section.
 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_;
 358 };
 359
 360 template<>
 361 Target::Target_info Target_sparc<32, true>::sparc_info =
 362 {
 363   32,                   // size
 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
 370   '\0',                 // wrap_char
 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 };
 376
 377 template<>
 378 Target::Target_info Target_sparc<64, true>::sparc_info =
 379 {
 380   64,                   // size
 381   true,                 // is_big_endian
 382   elfcpp::EM_SPARCV9,   // machine_code
 383   false,                // has_make_symbol
 384   false,                // has_resolve
 385   false,                // has_code_fill
 386   true,                 // is_default_stack_executable
 387   '\0',                 // wrap_char
 388   "/usr/lib/sparcv9/ld.so.1",   // dynamic_linker
 389   0x100000,             // default_text_segment_address
 390   64 * 1024,            // abi_pagesize (overridable by -z max-page-size)
 391   8 * 1024              // common_pagesize (overridable by -z common-page-size)
 392 };
 393
 394 // We have to take care here, even when operating in little-endian
 395 // mode, sparc instructions are still big endian.
 396 template<int size, bool big_endian>
 397 class Sparc_relocate_functions
 398 {
 399 private:
 400   // Do a simple relocation with the addend in the relocation.
 401   template<int valsize>
 402   static inline void
 403   rela(unsigned char* view,
 404        unsigned int right_shift,
 405        typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
 406        typename elfcpp::Swap<size, big_endian>::Valtype value,
 407        typename elfcpp::Swap<size, big_endian>::Valtype addend)
 408   {
 409     typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
 410     Valtype* wv = reinterpret_cast<Valtype*>(view);
 411     Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
 412     Valtype reloc = ((value + addend) >> right_shift);
 413
 414     val &= ~dst_mask;
 415     reloc &= dst_mask;
 416
 417     elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
 418   }
 419
 420   // Do a simple relocation using a symbol value with the addend in
 421   // the relocation.
 422   template<int valsize>
 423   static inline void
 424   rela(unsigned char* view,
 425        unsigned int right_shift,
 426        typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
 427        const Sized_relobj<size, big_endian>* object,
 428        const Symbol_value<size>* psymval,
 429        typename elfcpp::Swap<valsize, big_endian>::Valtype addend)
 430   {
 431     typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
 432     Valtype* wv = reinterpret_cast<Valtype*>(view);
 433     Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
 434     Valtype reloc = (psymval->value(object, addend) >> right_shift);
 435
 436     val &= ~dst_mask;
 437     reloc &= dst_mask;
 438
 439     elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
 440   }
 441
 442   // Do a simple relocation using a symbol value with the addend in
 443   // the relocation, unaligned.
 444   template<int valsize>
 445   static inline void
 446   rela_ua(unsigned char* view,
 447           unsigned int right_shift, elfcpp::Elf_Xword dst_mask,
 448           const Sized_relobj<size, big_endian>* object,
 449           const Symbol_value<size>* psymval,
 450           typename elfcpp::Swap<size, big_endian>::Valtype addend)
 451   {
 452     typedef typename elfcpp::Swap_unaligned<valsize,
 453             big_endian>::Valtype Valtype;
 454     unsigned char* wv = view;
 455     Valtype val = elfcpp::Swap_unaligned<valsize, big_endian>::readval(wv);
 456     Valtype reloc = (psymval->value(object, addend) >> right_shift);
 457
 458     val &= ~dst_mask;
 459     reloc &= dst_mask;
 460
 461     elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, val | reloc);
 462   }
 463
 464   // Do a simple PC relative relocation with a Symbol_value with the
 465   // addend in the relocation.
 466   template<int valsize>
 467   static inline void
 468   pcrela(unsigned char* view,
 469          unsigned int right_shift,
 470          typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
 471          const Sized_relobj<size, big_endian>* object,
 472          const Symbol_value<size>* psymval,
 473          typename elfcpp::Swap<size, big_endian>::Valtype addend,
 474          typename elfcpp::Elf_types<size>::Elf_Addr address)
 475   {
 476     typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
 477     Valtype* wv = reinterpret_cast<Valtype*>(view);
 478     Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
 479     Valtype reloc = ((psymval->value(object, addend) - address)
 480                      >> right_shift);
 481
 482     val &= ~dst_mask;
 483     reloc &= dst_mask;
 484
 485     elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
 486   }
 487
 488   template<int valsize>
 489   static inline void
 490   pcrela_unaligned(unsigned char* view,
 491                    const Sized_relobj<size, big_endian>* object,
 492                    const Symbol_value<size>* psymval,
 493                    typename elfcpp::Swap<size, big_endian>::Valtype addend,
 494                    typename elfcpp::Elf_types<size>::Elf_Addr address)
 495   {
 496     typedef typename elfcpp::Swap_unaligned<valsize,
 497             big_endian>::Valtype Valtype;
 498     unsigned char* wv = view;
 499     Valtype reloc = (psymval->value(object, addend) - address);
 500
 501     elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, reloc);
 502   }
 503
 504   typedef Sparc_relocate_functions<size, big_endian> This;
 505   typedef Sparc_relocate_functions<size, true> This_insn;
 506
 507 public:
 508   // R_SPARC_WDISP30: (Symbol + Addend - Address) >> 2
 509   static inline void
 510   wdisp30(unsigned char* view,
 511            const Sized_relobj<size, big_endian>* object,
 512            const Symbol_value<size>* psymval,
 513            typename elfcpp::Elf_types<size>::Elf_Addr addend,
 514            typename elfcpp::Elf_types<size>::Elf_Addr address)
 515   {
 516     This_insn::template pcrela<32>(view, 2, 0x3fffffff, object,
 517                                    psymval, addend, address);
 518   }
 519
 520   // R_SPARC_WDISP22: (Symbol + Addend - Address) >> 2
 521   static inline void
 522   wdisp22(unsigned char* view,
 523            const Sized_relobj<size, big_endian>* object,
 524            const Symbol_value<size>* psymval,
 525            typename elfcpp::Elf_types<size>::Elf_Addr addend,
 526            typename elfcpp::Elf_types<size>::Elf_Addr address)
 527   {
 528     This_insn::template pcrela<32>(view, 2, 0x003fffff, object,
 529                                    psymval, addend, address);
 530   }
 531
 532   // R_SPARC_WDISP19: (Symbol + Addend - Address) >> 2
 533   static inline void
 534   wdisp19(unsigned char* view,
 535           const Sized_relobj<size, big_endian>* object,
 536           const Symbol_value<size>* psymval,
 537           typename elfcpp::Elf_types<size>::Elf_Addr addend,
 538           typename elfcpp::Elf_types<size>::Elf_Addr address)
 539   {
 540     This_insn::template pcrela<32>(view, 2, 0x0007ffff, object,
 541                                    psymval, addend, address);
 542   }
 543
 544   // R_SPARC_WDISP16: (Symbol + Addend - Address) >> 2
 545   static inline void
 546   wdisp16(unsigned char* view,
 547           const Sized_relobj<size, big_endian>* object,
 548           const Symbol_value<size>* psymval,
 549           typename elfcpp::Elf_types<size>::Elf_Addr addend,
 550           typename elfcpp::Elf_types<size>::Elf_Addr address)
 551   {
 552     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
 553     Valtype* wv = reinterpret_cast<Valtype*>(view);
 554     Valtype val = elfcpp::Swap<32, true>::readval(wv);
 555     Valtype reloc = ((psymval->value(object, addend) - address)
 556                      >> 2);
 557
 558     // The relocation value is split between the low 14 bits,
 559     // and bits 20-21.
 560     val &= ~((0x3 << 20) | 0x3fff);
 561     reloc = (((reloc & 0xc000) << (20 - 14))
 562              | (reloc & 0x3ffff));
 563
 564     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
 565   }
 566
 567   // R_SPARC_PC22: (Symbol + Addend - Address) >> 10
 568   static inline void
 569   pc22(unsigned char* view,
 570        const Sized_relobj<size, big_endian>* object,
 571        const Symbol_value<size>* psymval,
 572        typename elfcpp::Elf_types<size>::Elf_Addr addend,
 573        typename elfcpp::Elf_types<size>::Elf_Addr address)
 574   {
 575     This_insn::template pcrela<32>(view, 10, 0x003fffff, object,
 576                                    psymval, addend, address);
 577   }
 578
 579   // R_SPARC_PC10: (Symbol + Addend - Address) & 0x3ff
 580   static inline void
 581   pc10(unsigned char* view,
 582        const Sized_relobj<size, big_endian>* object,
 583        const Symbol_value<size>* psymval,
 584        typename elfcpp::Elf_types<size>::Elf_Addr addend,
 585        typename elfcpp::Elf_types<size>::Elf_Addr address)
 586   {
 587     This_insn::template pcrela<32>(view, 0, 0x000003ff, object,
 588                                    psymval, addend, address);
 589   }
 590
 591   // R_SPARC_HI22: (Symbol + Addend) >> 10
 592   static inline void
 593   hi22(unsigned char* view,
 594        typename elfcpp::Elf_types<size>::Elf_Addr value,
 595        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 596   {
 597     This_insn::template rela<32>(view, 10, 0x003fffff, value, addend);
 598   }
 599
 600   // R_SPARC_HI22: (Symbol + Addend) >> 10
 601   static inline void
 602   hi22(unsigned char* view,
 603        const Sized_relobj<size, big_endian>* object,
 604        const Symbol_value<size>* psymval,
 605        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 606   {
 607     This_insn::template rela<32>(view, 10, 0x003fffff, object, psymval, addend);
 608   }
 609
 610   // R_SPARC_PCPLT22: (Symbol + Addend - Address) >> 10
 611   static inline void
 612   pcplt22(unsigned char* view,
 613           const Sized_relobj<size, big_endian>* object,
 614           const Symbol_value<size>* psymval,
 615           typename elfcpp::Elf_types<size>::Elf_Addr addend,
 616           typename elfcpp::Elf_types<size>::Elf_Addr address)
 617   {
 618     This_insn::template pcrela<32>(view, 10, 0x003fffff, object,
 619                                    psymval, addend, address);
 620   }
 621
 622   // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
 623   static inline void
 624   lo10(unsigned char* view,
 625        typename elfcpp::Elf_types<size>::Elf_Addr value,
 626        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 627   {
 628     This_insn::template rela<32>(view, 0, 0x000003ff, value, addend);
 629   }
 630
 631   // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
 632   static inline void
 633   lo10(unsigned char* view,
 634        const Sized_relobj<size, big_endian>* object,
 635        const Symbol_value<size>* psymval,
 636        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 637   {
 638     This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend);
 639   }
 640
 641   // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
 642   static inline void
 643   lo10(unsigned char* view,
 644        const Sized_relobj<size, big_endian>* object,
 645        const Symbol_value<size>* psymval,
 646        typename elfcpp::Elf_types<size>::Elf_Addr addend,
 647        typename elfcpp::Elf_types<size>::Elf_Addr address)
 648   {
 649     This_insn::template pcrela<32>(view, 0, 0x000003ff, object,
 650                                    psymval, addend, address);
 651   }
 652
 653   // R_SPARC_OLO10: ((Symbol + Addend) & 0x3ff) + Addend2
 654   static inline void
 655   olo10(unsigned char* view,
 656         const Sized_relobj<size, big_endian>* object,
 657         const Symbol_value<size>* psymval,
 658         typename elfcpp::Elf_types<size>::Elf_Addr addend,
 659         typename elfcpp::Elf_types<size>::Elf_Addr addend2)
 660   {
 661     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
 662     Valtype* wv = reinterpret_cast<Valtype*>(view);
 663     Valtype val = elfcpp::Swap<32, true>::readval(wv);
 664     Valtype reloc = psymval->value(object, addend);
 665
 666     val &= ~0x1fff;
 667     reloc &= 0x3ff;
 668     reloc += addend2;
 669     reloc &= 0x1fff;
 670
 671     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
 672   }
 673
 674   // R_SPARC_22: (Symbol + Addend)
 675   static inline void
 676   rela32_22(unsigned char* view,
 677             const Sized_relobj<size, big_endian>* object,
 678             const Symbol_value<size>* psymval,
 679             typename elfcpp::Elf_types<size>::Elf_Addr addend)
 680   {
 681     This_insn::template rela<32>(view, 0, 0x003fffff, object, psymval, addend);
 682   }
 683
 684   // R_SPARC_13: (Symbol + Addend)
 685   static inline void
 686   rela32_13(unsigned char* view,
 687             typename elfcpp::Elf_types<size>::Elf_Addr value,
 688             typename elfcpp::Elf_types<size>::Elf_Addr addend)
 689   {
 690     This_insn::template rela<32>(view, 0, 0x00001fff, value, addend);
 691   }
 692
 693   // R_SPARC_13: (Symbol + Addend)
 694   static inline void
 695   rela32_13(unsigned char* view,
 696             const Sized_relobj<size, big_endian>* object,
 697             const Symbol_value<size>* psymval,
 698             typename elfcpp::Elf_types<size>::Elf_Addr addend)
 699   {
 700     This_insn::template rela<32>(view, 0, 0x00001fff, object, psymval, addend);
 701   }
 702
 703   // R_SPARC_UA16: (Symbol + Addend)
 704   static inline void
 705   ua16(unsigned char* view,
 706        const Sized_relobj<size, big_endian>* object,
 707        const Symbol_value<size>* psymval,
 708        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 709   {
 710     This::template rela_ua<16>(view, 0, 0xffff, object, psymval, addend);
 711   }
 712
 713   // R_SPARC_UA32: (Symbol + Addend)
 714   static inline void
 715   ua32(unsigned char* view,
 716        const Sized_relobj<size, big_endian>* object,
 717        const Symbol_value<size>* psymval,
 718        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 719   {
 720     This::template rela_ua<32>(view, 0, 0xffffffff, object, psymval, addend);
 721   }
 722
 723   // R_SPARC_UA64: (Symbol + Addend)
 724   static inline void
 725   ua64(unsigned char* view,
 726        const Sized_relobj<size, big_endian>* object,
 727        const Symbol_value<size>* psymval,
 728        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 729   {
 730     This::template rela_ua<64>(view, 0, ~(elfcpp::Elf_Xword) 0,
 731                                object, psymval, addend);
 732   }
 733
 734   // R_SPARC_DISP8: (Symbol + Addend - Address)
 735   static inline void
 736   disp8(unsigned char* view,
 737         const Sized_relobj<size, big_endian>* object,
 738         const Symbol_value<size>* psymval,
 739         typename elfcpp::Elf_types<size>::Elf_Addr addend,
 740         typename elfcpp::Elf_types<size>::Elf_Addr address)
 741   {
 742     This::template pcrela_unaligned<8>(view, object, psymval,
 743                                        addend, address);
 744   }
 745
 746   // R_SPARC_DISP16: (Symbol + Addend - Address)
 747   static inline void
 748   disp16(unsigned char* view,
 749          const Sized_relobj<size, big_endian>* object,
 750          const Symbol_value<size>* psymval,
 751          typename elfcpp::Elf_types<size>::Elf_Addr addend,
 752          typename elfcpp::Elf_types<size>::Elf_Addr address)
 753   {
 754     This::template pcrela_unaligned<16>(view, object, psymval,
 755                                         addend, address);
 756   }
 757
 758   // R_SPARC_DISP32: (Symbol + Addend - Address)
 759   static inline void
 760   disp32(unsigned char* view,
 761          const Sized_relobj<size, big_endian>* object,
 762          const Symbol_value<size>* psymval,
 763          typename elfcpp::Elf_types<size>::Elf_Addr addend,
 764          typename elfcpp::Elf_types<size>::Elf_Addr address)
 765   {
 766     This::template pcrela_unaligned<32>(view, object, psymval,
 767                                         addend, address);
 768   }
 769
 770   // R_SPARC_DISP64: (Symbol + Addend - Address)
 771   static inline void
 772   disp64(unsigned char* view,
 773          const Sized_relobj<size, big_endian>* object,
 774          const Symbol_value<size>* psymval,
 775          elfcpp::Elf_Xword addend,
 776          typename elfcpp::Elf_types<size>::Elf_Addr address)
 777   {
 778     This::template pcrela_unaligned<64>(view, object, psymval,
 779                                         addend, address);
 780   }
 781
 782   // R_SPARC_H44: (Symbol + Addend) >> 22
 783   static inline void
 784   h44(unsigned char* view,
 785       const Sized_relobj<size, big_endian>* object,
 786       const Symbol_value<size>* psymval,
 787       typename elfcpp::Elf_types<size>::Elf_Addr  addend)
 788   {
 789     This_insn::template rela<32>(view, 22, 0x003fffff, object, psymval, addend);
 790   }
 791
 792   // R_SPARC_M44: ((Symbol + Addend) >> 12) & 0x3ff
 793   static inline void
 794   m44(unsigned char* view,
 795       const Sized_relobj<size, big_endian>* object,
 796       const Symbol_value<size>* psymval,
 797       typename elfcpp::Elf_types<size>::Elf_Addr  addend)
 798   {
 799     This_insn::template rela<32>(view, 12, 0x000003ff, object, psymval, addend);
 800   }
 801
 802   // R_SPARC_L44: (Symbol + Addend) & 0xfff
 803   static inline void
 804   l44(unsigned char* view,
 805       const Sized_relobj<size, big_endian>* object,
 806       const Symbol_value<size>* psymval,
 807       typename elfcpp::Elf_types<size>::Elf_Addr  addend)
 808   {
 809     This_insn::template rela<32>(view, 0, 0x00000fff, object, psymval, addend);
 810   }
 811
 812   // R_SPARC_HH22: (Symbol + Addend) >> 42
 813   static inline void
 814   hh22(unsigned char* view,
 815        const Sized_relobj<size, big_endian>* object,
 816        const Symbol_value<size>* psymval,
 817        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 818   {
 819     This_insn::template rela<32>(view, 42, 0x003fffff, object, psymval, addend);
 820   }
 821
 822   // R_SPARC_PC_HH22: (Symbol + Addend - Address) >> 42
 823   static inline void
 824   pc_hh22(unsigned char* view,
 825           const Sized_relobj<size, big_endian>* object,
 826           const Symbol_value<size>* psymval,
 827           typename elfcpp::Elf_types<size>::Elf_Addr addend,
 828           typename elfcpp::Elf_types<size>::Elf_Addr address)
 829   {
 830     This_insn::template pcrela<32>(view, 42, 0x003fffff, object,
 831                                    psymval, addend, address);
 832   }
 833
 834   // R_SPARC_HM10: ((Symbol + Addend) >> 32) & 0x3ff
 835   static inline void
 836   hm10(unsigned char* view,
 837        const Sized_relobj<size, big_endian>* object,
 838        const Symbol_value<size>* psymval,
 839        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 840   {
 841     This_insn::template rela<32>(view, 32, 0x000003ff, object, psymval, addend);
 842   }
 843
 844   // R_SPARC_PC_HM10: ((Symbol + Addend - Address) >> 32) & 0x3ff
 845   static inline void
 846   pc_hm10(unsigned char* view,
 847           const Sized_relobj<size, big_endian>* object,
 848           const Symbol_value<size>* psymval,
 849           typename elfcpp::Elf_types<size>::Elf_Addr addend,
 850           typename elfcpp::Elf_types<size>::Elf_Addr address)
 851   {
 852     This_insn::template pcrela<32>(view, 32, 0x000003ff, object,
 853                                    psymval, addend, address);
 854   }
 855
 856   // R_SPARC_11: (Symbol + Addend)
 857   static inline void
 858   rela32_11(unsigned char* view,
 859             const Sized_relobj<size, big_endian>* object,
 860             const Symbol_value<size>* psymval,
 861             typename elfcpp::Elf_types<size>::Elf_Addr addend)
 862   {
 863     This_insn::template rela<32>(view, 0, 0x000007ff, object, psymval, addend);
 864   }
 865
 866   // R_SPARC_10: (Symbol + Addend)
 867   static inline void
 868   rela32_10(unsigned char* view,
 869             const Sized_relobj<size, big_endian>* object,
 870             const Symbol_value<size>* psymval,
 871             typename elfcpp::Elf_types<size>::Elf_Addr addend)
 872   {
 873     This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend);
 874   }
 875
 876   // R_SPARC_7: (Symbol + Addend)
 877   static inline void
 878   rela32_7(unsigned char* view,
 879            const Sized_relobj<size, big_endian>* object,
 880            const Symbol_value<size>* psymval,
 881            typename elfcpp::Elf_types<size>::Elf_Addr addend)
 882   {
 883     This_insn::template rela<32>(view, 0, 0x0000007f, object, psymval, addend);
 884   }
 885
 886   // R_SPARC_6: (Symbol + Addend)
 887   static inline void
 888   rela32_6(unsigned char* view,
 889            const Sized_relobj<size, big_endian>* object,
 890            const Symbol_value<size>* psymval,
 891            typename elfcpp::Elf_types<size>::Elf_Addr addend)
 892   {
 893     This_insn::template rela<32>(view, 0, 0x0000003f, object, psymval, addend);
 894   }
 895
 896   // R_SPARC_5: (Symbol + Addend)
 897   static inline void
 898   rela32_5(unsigned char* view,
 899            const Sized_relobj<size, big_endian>* object,
 900            const Symbol_value<size>* psymval,
 901            typename elfcpp::Elf_types<size>::Elf_Addr addend)
 902   {
 903     This_insn::template rela<32>(view, 0, 0x0000001f, object, psymval, addend);
 904   }
 905
 906   // R_SPARC_TLS_LDO_HIX22: @dtpoff(Symbol + Addend) >> 10
 907   static inline void
 908   ldo_hix22(unsigned char* view,
 909             typename elfcpp::Elf_types<size>::Elf_Addr value,
 910             typename elfcpp::Elf_types<size>::Elf_Addr addend)
 911   {
 912     This_insn::hi22(view, value, addend);
 913   }
 914
 915   // R_SPARC_TLS_LDO_LOX10: @dtpoff(Symbol + Addend) & 0x3ff
 916   static inline void
 917   ldo_lox10(unsigned char* view,
 918             typename elfcpp::Elf_types<size>::Elf_Addr value,
 919             typename elfcpp::Elf_types<size>::Elf_Addr addend)
 920   {
 921     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
 922     Valtype* wv = reinterpret_cast<Valtype*>(view);
 923     Valtype val = elfcpp::Swap<32, true>::readval(wv);
 924     Valtype reloc = (value + addend);
 925
 926     val &= ~0x1fff;
 927     reloc &= 0x3ff;
 928
 929     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
 930   }
 931
 932   // R_SPARC_TLS_LE_HIX22: (@tpoff(Symbol + Addend) ^ 0xffffffffffffffff) >> 10
 933   static inline void
 934   hix22(unsigned char* view,
 935         typename elfcpp::Elf_types<size>::Elf_Addr value,
 936         typename elfcpp::Elf_types<size>::Elf_Addr addend)
 937   {
 938     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
 939     Valtype* wv = reinterpret_cast<Valtype*>(view);
 940     Valtype val = elfcpp::Swap<32, true>::readval(wv);
 941     Valtype reloc = (value + addend);
 942
 943     val &= ~0x3fffff;
 944
 945     reloc ^= ~(Valtype)0;
 946     reloc >>= 10;
 947
 948     reloc &= 0x3fffff;
 949
 950     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
 951   }
 952
 953   // R_SPARC_HIX22: ((Symbol + Addend) ^ 0xffffffffffffffff) >> 10
 954   static inline void
 955   hix22(unsigned char* view,
 956         const Sized_relobj<size, big_endian>* object,
 957         const Symbol_value<size>* psymval,
 958         typename elfcpp::Elf_types<size>::Elf_Addr addend)
 959   {
 960     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
 961     Valtype* wv = reinterpret_cast<Valtype*>(view);
 962     Valtype val = elfcpp::Swap<32, true>::readval(wv);
 963     Valtype reloc = psymval->value(object, addend);
 964
 965     val &= ~0x3fffff;
 966
 967     reloc ^= ~(Valtype)0;
 968     reloc >>= 10;
 969
 970     reloc &= 0x3fffff;
 971
 972     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
 973   }
 974
 975
 976   // R_SPARC_TLS_LE_LOX10: (@tpoff(Symbol + Addend) & 0x3ff) | 0x1c00
 977   static inline void
 978   lox10(unsigned char* view,
 979         typename elfcpp::Elf_types<size>::Elf_Addr value,
 980         typename elfcpp::Elf_types<size>::Elf_Addr addend)
 981   {
 982     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
 983     Valtype* wv = reinterpret_cast<Valtype*>(view);
 984     Valtype val = elfcpp::Swap<32, true>::readval(wv);
 985     Valtype reloc = (value + addend);
 986
 987     val &= ~0x1fff;
 988     reloc &= 0x3ff;
 989     reloc |= 0x1c00;
 990
 991     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
 992   }
 993
 994   // R_SPARC_LOX10: ((Symbol + Addend) & 0x3ff) | 0x1c00
 995   static inline void
 996   lox10(unsigned char* view,
 997         const Sized_relobj<size, big_endian>* object,
 998         const Symbol_value<size>* psymval,
 999         typename elfcpp::Elf_types<size>::Elf_Addr addend)
1000   {
1001     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
1002     Valtype* wv = reinterpret_cast<Valtype*>(view);
1003     Valtype val = elfcpp::Swap<32, true>::readval(wv);
1004     Valtype reloc = psymval->value(object, addend);
1005
1006     val &= ~0x1fff;
1007     reloc &= 0x3ff;
1008     reloc |= 0x1c00;
1009
1010     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
1011   }
1012 };
1013
1014 // Get the GOT section, creating it if necessary.
1015
1016 template<int size, bool big_endian>
1017 Output_data_got<size, big_endian>*
1018 Target_sparc<size, big_endian>::got_section(Symbol_table* symtab,
1019                                             Layout* layout)
1020 {
1021   if (this->got_ == NULL)
1022     {
1023       gold_assert(symtab != NULL && layout != NULL);
1024
1025       this->got_ = new Output_data_got<size, big_endian>();
1026
1027       Output_section* os;
1028       os = layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS,
1029                                            (elfcpp::SHF_ALLOC
1030                                             | elfcpp::SHF_WRITE),
1031                                            this->got_);
1032       os->set_is_relro();
1033
1034       // Define _GLOBAL_OFFSET_TABLE_ at the start of the .got section.
1035       symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL,
1036                                     this->got_,
1037                                     0, 0, elfcpp::STT_OBJECT,
1038                                     elfcpp::STB_LOCAL,
1039                                     elfcpp::STV_HIDDEN, 0,
1040                                     false, false);
1041     }
1042
1043   return this->got_;
1044 }
1045
1046 // Get the dynamic reloc section, creating it if necessary.
1047
1048 template<int size, bool big_endian>
1049 typename Target_sparc<size, big_endian>::Reloc_section*
1050 Target_sparc<size, big_endian>::rela_dyn_section(Layout* layout)
1051 {
1052   if (this->rela_dyn_ == NULL)
1053     {
1054       gold_assert(layout != NULL);
1055       this->rela_dyn_ = new Reloc_section(parameters->options().combreloc());
1056       layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA,
1057                                       elfcpp::SHF_ALLOC, this->rela_dyn_);
1058     }
1059   return this->rela_dyn_;
1060 }
1061
1062 // A class to handle the PLT data.
1063
1064 template<int size, bool big_endian>
1065 class Output_data_plt_sparc : public Output_section_data
1066 {
1067  public:
1068   typedef Output_data_reloc<elfcpp::SHT_RELA, true,
1069                             size, big_endian> Reloc_section;
1070
1071   Output_data_plt_sparc(Layout*);
1072
1073   // Add an entry to the PLT.
1074   void add_entry(Symbol* gsym);
1075
1076   // Return the .rela.plt section data.
1077   const Reloc_section* rel_plt() const
1078   {
1079     return this->rel_;
1080   }
1081
1082  protected:
1083   void do_adjust_output_section(Output_section* os);
1084
1085   // Write to a map file.
1086   void
1087   do_print_to_mapfile(Mapfile* mapfile) const
1088   { mapfile->print_output_data(this, _("** PLT")); }
1089
1090  private:
1091   // The size of an entry in the PLT.
1092   static const int base_plt_entry_size = (size == 32 ? 12 : 32);
1093
1094   static const unsigned int plt_entries_per_block = 160;
1095   static const unsigned int plt_insn_chunk_size = 24;
1096   static const unsigned int plt_pointer_chunk_size = 8;
1097   static const unsigned int plt_block_size =
1098     (plt_entries_per_block
1099      * (plt_insn_chunk_size + plt_pointer_chunk_size));
1100
1101   // Set the final size.
1102   void
1103   set_final_data_size()
1104   {
1105     unsigned int full_count = this->count_ + 4;
1106     unsigned int extra = (size == 32 ? 4 : 0);
1107
1108     if (size == 32 || full_count < 32768)
1109       this->set_data_size((full_count * base_plt_entry_size) + extra);
1110     else
1111       {
1112         unsigned int ext_cnt = full_count - 32768;
1113
1114         this->set_data_size((32768 * base_plt_entry_size)
1115                             + (ext_cnt
1116                                * (plt_insn_chunk_size
1117                                   + plt_pointer_chunk_size)));
1118       }
1119   }
1120
1121   // Write out the PLT data.
1122   void
1123   do_write(Output_file*);
1124
1125   // The reloc section.
1126   Reloc_section* rel_;
1127   // The number of PLT entries.
1128   unsigned int count_;
1129 };
1130
1131 // Define the constants as required by C++ standard.
1132
1133 template<int size, bool big_endian>
1134 const int Output_data_plt_sparc<size, big_endian>::base_plt_entry_size;
1135
1136 template<int size, bool big_endian>
1137 const unsigned int
1138 Output_data_plt_sparc<size, big_endian>::plt_entries_per_block;
1139
1140 template<int size, bool big_endian>
1141 const unsigned int Output_data_plt_sparc<size, big_endian>::plt_insn_chunk_size;
1142
1143 template<int size, bool big_endian>
1144 const unsigned int
1145 Output_data_plt_sparc<size, big_endian>::plt_pointer_chunk_size;
1146
1147 template<int size, bool big_endian>
1148 const unsigned int Output_data_plt_sparc<size, big_endian>::plt_block_size;
1149
1150 // Create the PLT section.  The ordinary .got section is an argument,
1151 // since we need to refer to the start.
1152
1153 template<int size, bool big_endian>
1154 Output_data_plt_sparc<size, big_endian>::Output_data_plt_sparc(Layout* layout)
1155   : Output_section_data(size == 32 ? 4 : 8), count_(0)
1156 {
1157   this->rel_ = new Reloc_section(false);
1158   layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA,
1159                                   elfcpp::SHF_ALLOC, this->rel_);
1160 }
1161
1162 template<int size, bool big_endian>
1163 void
1164 Output_data_plt_sparc<size, big_endian>::do_adjust_output_section(Output_section* os)
1165 {
1166   os->set_entsize(0);
1167 }
1168
1169 // Add an entry to the PLT.
1170
1171 template<int size, bool big_endian>
1172 void
1173 Output_data_plt_sparc<size, big_endian>::add_entry(Symbol* gsym)
1174 {
1175   gold_assert(!gsym->has_plt_offset());
1176
1177   unsigned int index = this->count_ + 4;
1178   section_offset_type plt_offset;
1179
1180   if (size == 32 || index < 32768)
1181     plt_offset = index * base_plt_entry_size;
1182   else
1183     {
1184         unsigned int ext_index = index - 32768;
1185
1186         plt_offset = (32768 * base_plt_entry_size)
1187           + ((ext_index / plt_entries_per_block)
1188              * plt_block_size)
1189           + ((ext_index % plt_entries_per_block)
1190              * plt_insn_chunk_size);
1191     }
1192
1193   gsym->set_plt_offset(plt_offset);
1194
1195   ++this->count_;
1196
1197   // Every PLT entry needs a reloc.
1198   gsym->set_needs_dynsym_entry();
1199   this->rel_->add_global(gsym, elfcpp::R_SPARC_JMP_SLOT, this,
1200                          plt_offset, 0);
1201
1202   // Note that we don't need to save the symbol.  The contents of the
1203   // PLT are independent of which symbols are used.  The symbols only
1204   // appear in the relocations.
1205 }
1206
1207 static const unsigned int sparc_nop = 0x01000000;
1208 static const unsigned int sparc_sethi_g1 = 0x03000000;
1209 static const unsigned int sparc_branch_always = 0x30800000;
1210 static const unsigned int sparc_branch_always_pt = 0x30680000;
1211 static const unsigned int sparc_mov = 0x80100000;
1212 static const unsigned int sparc_mov_g0_o0 = 0x90100000;
1213 static const unsigned int sparc_mov_o7_g5 = 0x8a10000f;
1214 static const unsigned int sparc_call_plus_8 = 0x40000002;
1215 static const unsigned int sparc_ldx_o7_imm_g1 = 0xc25be000;
1216 static const unsigned int sparc_jmpl_o7_g1_g1 = 0x83c3c001;
1217 static const unsigned int sparc_mov_g5_o7 = 0x9e100005;
1218
1219 // Write out the PLT.
1220
1221 template<int size, bool big_endian>
1222 void
1223 Output_data_plt_sparc<size, big_endian>::do_write(Output_file* of)
1224 {
1225   const off_t offset = this->offset();
1226   const section_size_type oview_size =
1227     convert_to_section_size_type(this->data_size());
1228   unsigned char* const oview = of->get_output_view(offset, oview_size);
1229   unsigned char* pov = oview;
1230
1231   memset(pov, 0, base_plt_entry_size * 4);
1232   pov += base_plt_entry_size * 4;
1233
1234   unsigned int plt_offset = base_plt_entry_size * 4;
1235   const unsigned int count = this->count_;
1236
1237   if (size == 64)
1238     {
1239       unsigned int limit;
1240
1241       limit = (count > 32768 ? 32768 : count);
1242
1243       for (unsigned int i = 0; i < limit; ++i)
1244         {
1245           elfcpp::Swap<32, true>::writeval(pov + 0x00,
1246                                            sparc_sethi_g1 + plt_offset);
1247           elfcpp::Swap<32, true>::writeval(pov + 0x04,
1248                                            sparc_branch_always_pt +
1249                                            (((base_plt_entry_size -
1250                                               (plt_offset + 4)) >> 2) &
1251                                             0x7ffff));
1252           elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop);
1253           elfcpp::Swap<32, true>::writeval(pov + 0x0c, sparc_nop);
1254           elfcpp::Swap<32, true>::writeval(pov + 0x10, sparc_nop);
1255           elfcpp::Swap<32, true>::writeval(pov + 0x14, sparc_nop);
1256           elfcpp::Swap<32, true>::writeval(pov + 0x18, sparc_nop);
1257           elfcpp::Swap<32, true>::writeval(pov + 0x1c, sparc_nop);
1258
1259           pov += base_plt_entry_size;
1260           plt_offset += base_plt_entry_size;
1261         }
1262
1263       if (count > 32768)
1264         {
1265           unsigned int ext_cnt = count - 32768;
1266           unsigned int blks = ext_cnt / plt_entries_per_block;
1267
1268           for (unsigned int i = 0; i < blks; ++i)
1269             {
1270               unsigned int data_off = (plt_entries_per_block
1271                                        * plt_insn_chunk_size) - 4;
1272
1273               for (unsigned int j = 0; j < plt_entries_per_block; ++j)
1274                 {
1275                   elfcpp::Swap<32, true>::writeval(pov + 0x00,
1276                                                    sparc_mov_o7_g5);
1277                   elfcpp::Swap<32, true>::writeval(pov + 0x04,
1278                                                    sparc_call_plus_8);
1279                   elfcpp::Swap<32, true>::writeval(pov + 0x08,
1280                                                    sparc_nop);
1281                   elfcpp::Swap<32, true>::writeval(pov + 0x0c,
1282                                                    sparc_ldx_o7_imm_g1 +
1283                                                    (data_off & 0x1fff));
1284                   elfcpp::Swap<32, true>::writeval(pov + 0x10,
1285                                                    sparc_jmpl_o7_g1_g1);
1286                   elfcpp::Swap<32, true>::writeval(pov + 0x14,
1287                                                    sparc_mov_g5_o7);
1288
1289                   elfcpp::Swap<64, big_endian>::writeval(
1290                                 pov + 0x4 + data_off,
1291                                 (elfcpp::Elf_Xword) (oview - (pov + 0x04)));
1292
1293                   pov += plt_insn_chunk_size;
1294                   data_off -= 16;
1295                 }
1296             }
1297
1298           unsigned int sub_blk_cnt = ext_cnt % plt_entries_per_block;
1299           for (unsigned int i = 0; i < sub_blk_cnt; ++i)
1300             {
1301               unsigned int data_off = (sub_blk_cnt
1302                                        * plt_insn_chunk_size) - 4;
1303
1304               for (unsigned int j = 0; j < plt_entries_per_block; ++j)
1305                 {
1306                   elfcpp::Swap<32, true>::writeval(pov + 0x00,
1307                                                    sparc_mov_o7_g5);
1308                   elfcpp::Swap<32, true>::writeval(pov + 0x04,
1309                                                    sparc_call_plus_8);
1310                   elfcpp::Swap<32, true>::writeval(pov + 0x08,
1311                                                    sparc_nop);
1312                   elfcpp::Swap<32, true>::writeval(pov + 0x0c,
1313                                                    sparc_ldx_o7_imm_g1 +
1314                                                    (data_off & 0x1fff));
1315                   elfcpp::Swap<32, true>::writeval(pov + 0x10,
1316                                                    sparc_jmpl_o7_g1_g1);
1317                   elfcpp::Swap<32, true>::writeval(pov + 0x14,
1318                                                    sparc_mov_g5_o7);
1319
1320                   elfcpp::Swap<64, big_endian>::writeval(
1321                                 pov + 0x4 + data_off,
1322                                 (elfcpp::Elf_Xword) (oview - (pov + 0x04)));
1323
1324                   pov += plt_insn_chunk_size;
1325                   data_off -= 16;
1326                 }
1327             }
1328         }
1329     }
1330   else
1331     {
1332       for (unsigned int i = 0; i < count; ++i)
1333         {
1334           elfcpp::Swap<32, true>::writeval(pov + 0x00,
1335                                            sparc_sethi_g1 + plt_offset);
1336           elfcpp::Swap<32, true>::writeval(pov + 0x04,
1337                                            sparc_branch_always +
1338                                            (((- (plt_offset + 4)) >> 2) &
1339                                             0x003fffff));
1340           elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop);
1341
1342           pov += base_plt_entry_size;
1343           plt_offset += base_plt_entry_size;
1344         }
1345
1346       elfcpp::Swap<32, true>::writeval(pov, sparc_nop);
1347       pov += 4;
1348     }
1349
1350   gold_assert(static_cast<section_size_type>(pov - oview) == oview_size);
1351
1352   of->write_output_view(offset, oview_size, oview);
1353 }
1354
1355 // Create a PLT entry for a global symbol.
1356
1357 template<int size, bool big_endian>
1358 void
1359 Target_sparc<size, big_endian>::make_plt_entry(Symbol_table* symtab,
1360                                                Layout* layout,
1361                                                Symbol* gsym)
1362 {
1363   if (gsym->has_plt_offset())
1364     return;
1365
1366   if (this->plt_ == NULL)
1367     {
1368       // Create the GOT sections first.
1369       this->got_section(symtab, layout);
1370
1371       this->plt_ = new Output_data_plt_sparc<size, big_endian>(layout);
1372       layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS,
1373                                       (elfcpp::SHF_ALLOC
1374                                        | elfcpp::SHF_EXECINSTR
1375                                        | elfcpp::SHF_WRITE),
1376                                       this->plt_);
1377
1378       // Define _PROCEDURE_LINKAGE_TABLE_ at the start of the .plt section.
1379       symtab->define_in_output_data("_PROCEDURE_LINKAGE_TABLE_", NULL,
1380                                     this->plt_,
1381                                     0, 0, elfcpp::STT_OBJECT,
1382                                     elfcpp::STB_LOCAL,
1383                                     elfcpp::STV_HIDDEN, 0,
1384                                     false, false);
1385     }
1386
1387   this->plt_->add_entry(gsym);
1388 }
1389
1390 // Create a GOT entry for the TLS module index.
1391
1392 template<int size, bool big_endian>
1393 unsigned int
1394 Target_sparc<size, big_endian>::got_mod_index_entry(Symbol_table* symtab,
1395                                                     Layout* layout,
1396                                                     Sized_relobj<size, big_endian>* object)
1397 {
1398   if (this->got_mod_index_offset_ == -1U)
1399     {
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;
1404
1405       got = this->got_section(symtab, layout);
1406       got_offset = got->add_constant(0);
1407       rela_dyn->add_local(object, 0,
1408                           (size == 64 ?
1409                            elfcpp::R_SPARC_TLS_DTPMOD64 :
1410                            elfcpp::R_SPARC_TLS_DTPMOD32), got,
1411                           got_offset, 0);
1412       got->add_constant(0);
1413       this->got_mod_index_offset_ = got_offset;
1414     }
1415   return this->got_mod_index_offset_;
1416 }
1417
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.
1421
1422 static tls::Tls_optimization
1423 optimize_tls_reloc(bool is_final, int r_type)
1424 {
1425   // If we are generating a shared library, then we can't do anything
1426   // in the linker.
1427   if (parameters->options().shared())
1428     return tls::TLSOPT_NONE;
1429
1430   switch (r_type)
1431     {
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.
1440       if (is_final)
1441         return tls::TLSOPT_TO_LE;
1442       return tls::TLSOPT_TO_IE;
1443
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;
1452
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;
1458
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.
1468       if (is_final)
1469         return tls::TLSOPT_TO_LE;
1470       return tls::TLSOPT_NONE;
1471
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
1475       // can do.
1476       return tls::TLSOPT_NONE;
1477
1478     default:
1479       gold_unreachable();
1480     }
1481 }
1482
1483 // Generate a PLT entry slot for a call to __tls_get_addr
1484 template<int size, bool big_endian>
1485 void
1486 Target_sparc<size, big_endian>::Scan::generate_tls_call(Symbol_table* symtab,
1487                                                         Layout* layout,
1488                                                         Target_sparc<size, big_endian>* target)
1489 {
1490   Symbol* gsym = target->tls_get_addr_sym(symtab);
1491
1492   target->make_plt_entry(symtab, layout, gsym);
1493 }
1494
1495 // Report an unsupported relocation against a local symbol.
1496
1497 template<int size, bool big_endian>
1498 void
1499 Target_sparc<size, big_endian>::Scan::unsupported_reloc_local(
1500                         Sized_relobj<size, big_endian>* object,
1501                         unsigned int r_type)
1502 {
1503   gold_error(_("%s: unsupported reloc %u against local symbol"),
1504              object->name().c_str(), r_type);
1505 }
1506
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.
1509
1510 template<int size, bool big_endian>
1511 void
1512 Target_sparc<size, big_endian>::Scan::check_non_pic(Relobj* object, unsigned int r_type)
1513 {
1514   gold_assert(r_type != elfcpp::R_SPARC_NONE);
1515
1516   if (size == 64)
1517     {
1518       switch (r_type)
1519         {
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:
1549           return;
1550
1551         default:
1552           break;
1553         }
1554     }
1555   else
1556     {
1557       switch (r_type)
1558         {
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:
1580           return;
1581
1582         default:
1583           break;
1584         }
1585     }
1586
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_)
1591     return;
1592   object->error(_("requires unsupported dynamic reloc; "
1593                   "recompile with -fPIC"));
1594   this->issued_non_pic_error_ = true;
1595   return;
1596 }
1597
1598 // Scan a relocation for a local symbol.
1599
1600 template<int size, bool big_endian>
1601 inline void
1602 Target_sparc<size, big_endian>::Scan::local(
1603                         const General_options&,
1604                         Symbol_table* symtab,
1605                         Layout* layout,
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)
1613 {
1614   unsigned int orig_r_type = r_type;
1615
1616   r_type &= 0xff;
1617   switch (r_type)
1618     {
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:
1623       break;
1624
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())
1634         {
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());
1641         }
1642       break;
1643
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
1667       // this location.
1668       if (parameters->options().output_is_position_independent())
1669         {
1670           Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1671
1672           check_non_pic(object, r_type);
1673           if (lsym.get_st_type() != elfcpp::STT_SECTION)
1674             {
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());
1679             }
1680           else
1681             {
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());
1688             }
1689         }
1690       break;
1691
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:
1702       break;
1703
1704     case elfcpp::R_SPARC_GOT10:
1705     case elfcpp::R_SPARC_GOT13:
1706     case elfcpp::R_SPARC_GOT22:
1707       {
1708         // The symbol requires a GOT entry.
1709         Output_data_got<size, big_endian>* got;
1710         unsigned int r_sym;
1711
1712         got = target->got_section(symtab, layout);
1713         r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1714
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())
1718           {
1719             if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD))
1720               {
1721                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1722                 unsigned int off;
1723
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,
1728                                              got, off, 0);
1729               }
1730           }
1731         else
1732           got->add_local(object, r_sym, GOT_TYPE_STANDARD);
1733       }
1734       break;
1735
1736       // These are initial TLS relocs, which are expected when
1737       // linking.
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:
1756       {
1757         bool output_is_shared = parameters->options().shared();
1758         const tls::Tls_optimization optimized_type
1759             = optimize_tls_reloc(!output_is_shared, r_type);
1760         switch (r_type)
1761           {
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)
1767               {
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();
1774                 bool is_ordinary;
1775                 shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary);
1776                 if (!is_ordinary)
1777                   object->error(_("local symbol %u has bad shndx %u"),
1778                                 r_sym, shndx);
1779                 else
1780                   got->add_local_pair_with_rela(object, r_sym,
1781                                                 lsym.get_st_shndx(),
1782                                                 GOT_TYPE_TLS_PAIR,
1783                                                 target->rela_dyn_section(layout),
1784                                                 (size == 64
1785                                                  ? elfcpp::R_SPARC_TLS_DTPMOD64
1786                                                  : elfcpp::R_SPARC_TLS_DTPMOD32),
1787                                                  0);
1788                 if (r_type == elfcpp::R_SPARC_TLS_GD_CALL)
1789                   generate_tls_call(symtab, layout, target);
1790               }
1791             else if (optimized_type != tls::TLSOPT_TO_LE)
1792               unsupported_reloc_local(object, r_type);
1793             break;
1794
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)
1800               {
1801                 // Create a GOT entry for the module index.
1802                 target->got_mod_index_entry(symtab, layout, object);
1803
1804                 if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL)
1805                   generate_tls_call(symtab, layout, target);
1806               }
1807             else if (optimized_type != tls::TLSOPT_TO_LE)
1808               unsupported_reloc_local(object, r_type);
1809             break;
1810
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:
1814             break;
1815
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)
1823               {
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());
1828
1829                 if (!object->local_has_got_offset(r_sym, GOT_TYPE_TLS_OFFSET))
1830                   {
1831                     Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1832                     unsigned int off = got->add_constant(0);
1833
1834                     object->set_local_got_offset(r_sym, GOT_TYPE_TLS_OFFSET,
1835                                                  off);
1836                     rela_dyn->add_local_relative(object, r_sym,
1837                                                  (size == 64 ?
1838                                                   elfcpp::R_SPARC_TLS_TPOFF64 :
1839                                                   elfcpp::R_SPARC_TLS_TPOFF32),
1840                                                  got, off, 0);
1841                   }
1842               }
1843             else if (optimized_type != tls::TLSOPT_TO_LE)
1844               unsupported_reloc_local(object, r_type);
1845             break;
1846
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)
1851               {
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);
1859               }
1860             break;
1861           }
1862       }
1863       break;
1864
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);
1879       break;
1880
1881     default:
1882       unsupported_reloc_local(object, r_type);
1883       break;
1884     }
1885 }
1886
1887 // Report an unsupported relocation against a global symbol.
1888
1889 template<int size, bool big_endian>
1890 void
1891 Target_sparc<size, big_endian>::Scan::unsupported_reloc_global(
1892                         Sized_relobj<size, big_endian>* object,
1893                         unsigned int r_type,
1894                         Symbol* gsym)
1895 {
1896   gold_error(_("%s: unsupported reloc %u against global symbol %s"),
1897              object->name().c_str(), r_type, gsym->demangled_name().c_str());
1898 }
1899
1900 // Scan a relocation for a global symbol.
1901
1902 template<int size, bool big_endian>
1903 inline void
1904 Target_sparc<size, big_endian>::Scan::global(
1905                                 const General_options&,
1906                                 Symbol_table* symtab,
1907                                 Layout* layout,
1908                                 Target_sparc<size, big_endian>* target,
1909                                 Sized_relobj<size, big_endian>* object,
1910                                 unsigned int data_shndx,
1911                                 Output_section* output_section,
1912                                 const elfcpp::Rela<size, big_endian>& reloc,
1913                                 unsigned int r_type,
1914                                 Symbol* gsym)
1915 {
1916   unsigned int orig_r_type = r_type;
1917
1918   // A reference to _GLOBAL_OFFSET_TABLE_ implies that we need a got
1919   // section.  We check here to avoid creating a dynamic reloc against
1920   // _GLOBAL_OFFSET_TABLE_.
1921   if (!target->has_got_section()
1922       && strcmp(gsym->name(), "_GLOBAL_OFFSET_TABLE_") == 0)
1923     target->got_section(symtab, layout);
1924
1925   r_type &= 0xff;
1926   switch (r_type)
1927     {
1928     case elfcpp::R_SPARC_NONE:
1929     case elfcpp::R_SPARC_REGISTER:
1930     case elfcpp::R_SPARC_GNU_VTINHERIT:
1931     case elfcpp::R_SPARC_GNU_VTENTRY:
1932       break;
1933
1934     case elfcpp::R_SPARC_PLT64:
1935     case elfcpp::R_SPARC_PLT32:
1936     case elfcpp::R_SPARC_HIPLT22:
1937     case elfcpp::R_SPARC_LOPLT10:
1938     case elfcpp::R_SPARC_PCPLT32:
1939     case elfcpp::R_SPARC_PCPLT22:
1940     case elfcpp::R_SPARC_PCPLT10:
1941     case elfcpp::R_SPARC_WPLT30:
1942       // If the symbol is fully resolved, this is just a PC32 reloc.
1943       // Otherwise we need a PLT entry.
1944       if (gsym->final_value_is_known())
1945         break;
1946       // If building a shared library, we can also skip the PLT entry
1947       // if the symbol is defined in the output file and is protected
1948       // or hidden.
1949       if (gsym->is_defined()
1950           && !gsym->is_from_dynobj()
1951           && !gsym->is_preemptible())
1952         break;
1953       target->make_plt_entry(symtab, layout, gsym);
1954       break;
1955
1956     case elfcpp::R_SPARC_DISP8:
1957     case elfcpp::R_SPARC_DISP16:
1958     case elfcpp::R_SPARC_DISP32:
1959     case elfcpp::R_SPARC_DISP64:
1960     case elfcpp::R_SPARC_PC_HH22:
1961     case elfcpp::R_SPARC_PC_HM10:
1962     case elfcpp::R_SPARC_PC_LM22:
1963     case elfcpp::R_SPARC_PC10:
1964     case elfcpp::R_SPARC_PC22:
1965     case elfcpp::R_SPARC_WDISP30:
1966     case elfcpp::R_SPARC_WDISP22:
1967     case elfcpp::R_SPARC_WDISP19:
1968     case elfcpp::R_SPARC_WDISP16:
1969       {
1970         if (gsym->needs_plt_entry())
1971           target->make_plt_entry(symtab, layout, gsym);
1972         // Make a dynamic relocation if necessary.
1973         int flags = Symbol::NON_PIC_REF;
1974         if (gsym->type() == elfcpp::STT_FUNC)
1975           flags |= Symbol::FUNCTION_CALL;
1976         if (gsym->needs_dynamic_reloc(flags))
1977           {
1978             if (target->may_need_copy_reloc(gsym))
1979               {
1980                 target->copy_reloc(symtab, layout, object,
1981                                    data_shndx, output_section, gsym,
1982                                    reloc);
1983               }
1984             else
1985               {
1986                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1987                 check_non_pic(object, r_type);
1988                 rela_dyn->add_global(gsym, orig_r_type, output_section, object,
1989                                      data_shndx, reloc.get_r_offset(),
1990                                      reloc.get_r_addend());
1991               }
1992           }
1993       }
1994       break;
1995
1996     case elfcpp::R_SPARC_UA64:
1997     case elfcpp::R_SPARC_64:
1998     case elfcpp::R_SPARC_HIX22:
1999     case elfcpp::R_SPARC_LOX10:
2000     case elfcpp::R_SPARC_H44:
2001     case elfcpp::R_SPARC_M44:
2002     case elfcpp::R_SPARC_L44:
2003     case elfcpp::R_SPARC_HH22:
2004     case elfcpp::R_SPARC_HM10:
2005     case elfcpp::R_SPARC_LM22:
2006     case elfcpp::R_SPARC_HI22:
2007     case elfcpp::R_SPARC_LO10:
2008     case elfcpp::R_SPARC_OLO10:
2009     case elfcpp::R_SPARC_UA32:
2010     case elfcpp::R_SPARC_32:
2011     case elfcpp::R_SPARC_UA16:
2012     case elfcpp::R_SPARC_16:
2013     case elfcpp::R_SPARC_11:
2014     case elfcpp::R_SPARC_10:
2015     case elfcpp::R_SPARC_8:
2016     case elfcpp::R_SPARC_7:
2017     case elfcpp::R_SPARC_6:
2018     case elfcpp::R_SPARC_5:
2019       {
2020         // Make a PLT entry if necessary.
2021         if (gsym->needs_plt_entry())
2022           {
2023             target->make_plt_entry(symtab, layout, gsym);
2024             // Since this is not a PC-relative relocation, we may be
2025             // taking the address of a function. In that case we need to
2026             // set the entry in the dynamic symbol table to the address of
2027             // the PLT entry.
2028             if (gsym->is_from_dynobj() && !parameters->options().shared())
2029               gsym->set_needs_dynsym_value();
2030           }
2031         // Make a dynamic relocation if necessary.
2032         if (gsym->needs_dynamic_reloc(Symbol::ABSOLUTE_REF))
2033           {
2034             if (target->may_need_copy_reloc(gsym))
2035               {
2036                 target->copy_reloc(symtab, layout, object,
2037                                    data_shndx, output_section, gsym, reloc);
2038               }
2039             else if ((r_type == elfcpp::R_SPARC_32
2040                       || r_type == elfcpp::R_SPARC_64)
2041                      && gsym->can_use_relative_reloc(false))
2042               {
2043                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2044                 rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE,
2045                                               output_section, object,
2046                                               data_shndx, reloc.get_r_offset(),
2047                                               reloc.get_r_addend());
2048               }
2049             else
2050               {
2051                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2052
2053                 check_non_pic(object, r_type);
2054                 if (gsym->is_from_dynobj()
2055                     || gsym->is_undefined()
2056                     || gsym->is_preemptible())
2057                   rela_dyn->add_global(gsym, orig_r_type, output_section,
2058                                        object, data_shndx,
2059                                        reloc.get_r_offset(),
2060                                        reloc.get_r_addend());
2061                 else
2062                   rela_dyn->add_global_relative(gsym, orig_r_type,
2063                                                 output_section, object,
2064                                                 data_shndx,
2065                                                 reloc.get_r_offset(),
2066                                                 reloc.get_r_addend());
2067               }
2068           }
2069       }
2070       break;
2071
2072     case elfcpp::R_SPARC_GOT10:
2073     case elfcpp::R_SPARC_GOT13:
2074     case elfcpp::R_SPARC_GOT22:
2075       {
2076         // The symbol requires a GOT entry.
2077         Output_data_got<size, big_endian>* got;
2078
2079         got = target->got_section(symtab, layout);
2080         if (gsym->final_value_is_known())
2081           got->add_global(gsym, GOT_TYPE_STANDARD);
2082         else
2083           {
2084             // If this symbol is not fully resolved, we need to add a
2085             // dynamic relocation for it.
2086             Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2087             if (gsym->is_from_dynobj()
2088                 || gsym->is_undefined()
2089                 || gsym->is_preemptible())
2090               got->add_global_with_rela(gsym, GOT_TYPE_STANDARD, rela_dyn,
2091                                         elfcpp::R_SPARC_GLOB_DAT);
2092             else if (!gsym->has_got_offset(GOT_TYPE_STANDARD))
2093               {
2094                 unsigned int off = got->add_constant(0);
2095
2096                 gsym->set_got_offset(GOT_TYPE_STANDARD, off);
2097                 rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE,
2098                                               got, off, 0);
2099               }
2100           }
2101       }
2102       break;
2103
2104       // These are initial tls relocs, which are expected when
2105       // linking.
2106     case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2107     case elfcpp::R_SPARC_TLS_GD_LO10:
2108     case elfcpp::R_SPARC_TLS_GD_ADD:
2109     case elfcpp::R_SPARC_TLS_GD_CALL:
2110     case elfcpp::R_SPARC_TLS_LDM_HI22:  // Local-dynamic
2111     case elfcpp::R_SPARC_TLS_LDM_LO10:
2112     case elfcpp::R_SPARC_TLS_LDM_ADD:
2113     case elfcpp::R_SPARC_TLS_LDM_CALL:
2114     case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
2115     case elfcpp::R_SPARC_TLS_LDO_LOX10:
2116     case elfcpp::R_SPARC_TLS_LDO_ADD:
2117     case elfcpp::R_SPARC_TLS_LE_HIX22:
2118     case elfcpp::R_SPARC_TLS_LE_LOX10:
2119     case elfcpp::R_SPARC_TLS_IE_HI22:   // Initial-exec
2120     case elfcpp::R_SPARC_TLS_IE_LO10:
2121     case elfcpp::R_SPARC_TLS_IE_LD:
2122     case elfcpp::R_SPARC_TLS_IE_LDX:
2123     case elfcpp::R_SPARC_TLS_IE_ADD:
2124       {
2125         const bool is_final = gsym->final_value_is_known();
2126         const tls::Tls_optimization optimized_type
2127             = optimize_tls_reloc(is_final, r_type);
2128         switch (r_type)
2129           {
2130           case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2131           case elfcpp::R_SPARC_TLS_GD_LO10:
2132           case elfcpp::R_SPARC_TLS_GD_ADD:
2133           case elfcpp::R_SPARC_TLS_GD_CALL:
2134             if (optimized_type == tls::TLSOPT_NONE)
2135               {
2136                 // Create a pair of GOT entries for the module index and
2137                 // dtv-relative offset.
2138                 Output_data_got<size, big_endian>* got
2139                     = target->got_section(symtab, layout);
2140                 got->add_global_pair_with_rela(gsym, GOT_TYPE_TLS_PAIR,
2141                                                target->rela_dyn_section(layout),
2142                                                (size == 64 ?
2143                                                 elfcpp::R_SPARC_TLS_DTPMOD64 :
2144                                                 elfcpp::R_SPARC_TLS_DTPMOD32),
2145                                                (size == 64 ?
2146                                                 elfcpp::R_SPARC_TLS_DTPOFF64 :
2147                                                 elfcpp::R_SPARC_TLS_DTPOFF32));
2148
2149                 // Emit R_SPARC_WPLT30 against "__tls_get_addr"
2150                 if (r_type == elfcpp::R_SPARC_TLS_GD_CALL)
2151                   generate_tls_call(symtab, layout, target);
2152               }
2153             else if (optimized_type == tls::TLSOPT_TO_IE)
2154               {
2155                 // Create a GOT entry for the tp-relative offset.
2156                 Output_data_got<size, big_endian>* got
2157                     = target->got_section(symtab, layout);
2158                 got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET,
2159                                           target->rela_dyn_section(layout),
2160                                           (size == 64 ?
2161                                            elfcpp::R_SPARC_TLS_TPOFF64 :
2162                                            elfcpp::R_SPARC_TLS_TPOFF32));
2163               }
2164             else if (optimized_type != tls::TLSOPT_TO_LE)
2165               unsupported_reloc_global(object, r_type, gsym);
2166             break;
2167
2168           case elfcpp::R_SPARC_TLS_LDM_HI22:    // Local-dynamic
2169           case elfcpp::R_SPARC_TLS_LDM_LO10:
2170           case elfcpp::R_SPARC_TLS_LDM_ADD:
2171           case elfcpp::R_SPARC_TLS_LDM_CALL:
2172             if (optimized_type == tls::TLSOPT_NONE)
2173               {
2174                 // Create a GOT entry for the module index.
2175                 target->got_mod_index_entry(symtab, layout, object);
2176
2177                 if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL)
2178                   generate_tls_call(symtab, layout, target);
2179               }
2180             else if (optimized_type != tls::TLSOPT_TO_LE)
2181               unsupported_reloc_global(object, r_type, gsym);
2182             break;
2183
2184           case elfcpp::R_SPARC_TLS_LDO_HIX22:   // Alternate local-dynamic
2185           case elfcpp::R_SPARC_TLS_LDO_LOX10:
2186           case elfcpp::R_SPARC_TLS_LDO_ADD:
2187             break;
2188
2189           case elfcpp::R_SPARC_TLS_LE_HIX22:
2190           case elfcpp::R_SPARC_TLS_LE_LOX10:
2191             layout->set_has_static_tls();
2192             if (parameters->options().shared())
2193               {
2194                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2195                 rela_dyn->add_global_relative(gsym, orig_r_type,
2196                                               output_section, object,
2197                                               data_shndx, reloc.get_r_offset(),
2198                                               0);
2199               }
2200             break;
2201
2202           case elfcpp::R_SPARC_TLS_IE_HI22:     // Initial-exec
2203           case elfcpp::R_SPARC_TLS_IE_LO10:
2204           case elfcpp::R_SPARC_TLS_IE_LD:
2205           case elfcpp::R_SPARC_TLS_IE_LDX:
2206           case elfcpp::R_SPARC_TLS_IE_ADD:
2207             layout->set_has_static_tls();
2208             if (optimized_type == tls::TLSOPT_NONE)
2209               {
2210                 // Create a GOT entry for the tp-relative offset.
2211                 Output_data_got<size, big_endian>* got
2212                   = target->got_section(symtab, layout);
2213                 got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET,
2214                                           target->rela_dyn_section(layout),
2215                                           (size == 64 ?
2216                                            elfcpp::R_SPARC_TLS_TPOFF64 :
2217                                            elfcpp::R_SPARC_TLS_TPOFF32));
2218               }
2219             else if (optimized_type != tls::TLSOPT_TO_LE)
2220               unsupported_reloc_global(object, r_type, gsym);
2221             break;
2222           }
2223       }
2224       break;
2225
2226       // These are relocations which should only be seen by the
2227       // dynamic linker, and should never be seen here.
2228     case elfcpp::R_SPARC_COPY:
2229     case elfcpp::R_SPARC_GLOB_DAT:
2230     case elfcpp::R_SPARC_JMP_SLOT:
2231     case elfcpp::R_SPARC_RELATIVE:
2232     case elfcpp::R_SPARC_TLS_DTPMOD64:
2233     case elfcpp::R_SPARC_TLS_DTPMOD32:
2234     case elfcpp::R_SPARC_TLS_DTPOFF64:
2235     case elfcpp::R_SPARC_TLS_DTPOFF32:
2236     case elfcpp::R_SPARC_TLS_TPOFF64:
2237     case elfcpp::R_SPARC_TLS_TPOFF32:
2238       gold_error(_("%s: unexpected reloc %u in object file"),
2239                  object->name().c_str(), r_type);
2240       break;
2241
2242     default:
2243       unsupported_reloc_global(object, r_type, gsym);
2244       break;
2245     }
2246 }
2247
2248 // Process relocations for gc.
2249
2250 template<int size, bool big_endian>
2251 void
2252 Target_sparc<size, big_endian>::gc_process_relocs(
2253                         const General_options& options,
2254                         Symbol_table* symtab,
2255                         Layout* layout,
2256                         Sized_relobj<size, big_endian>* object,
2257                         unsigned int data_shndx,
2258                         unsigned int,
2259                         const unsigned char* prelocs,
2260                         size_t reloc_count,
2261                         Output_section* output_section,
2262                         bool needs_special_offset_handling,
2263                         size_t local_symbol_count,
2264                         const unsigned char* plocal_symbols)
2265 {
2266   typedef Target_sparc<size, big_endian> Sparc;
2267   typedef typename Target_sparc<size, big_endian>::Scan Scan;
2268
2269   gold::gc_process_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>(
2270     options,
2271     symtab,
2272     layout,
2273     this,
2274     object,
2275     data_shndx,
2276     prelocs,
2277     reloc_count,
2278     output_section,
2279     needs_special_offset_handling,
2280     local_symbol_count,
2281     plocal_symbols);
2282 }
2283
2284 // Scan relocations for a section.
2285
2286 template<int size, bool big_endian>
2287 void
2288 Target_sparc<size, big_endian>::scan_relocs(
2289                         const General_options& options,
2290                         Symbol_table* symtab,
2291                         Layout* layout,
2292                         Sized_relobj<size, big_endian>* object,
2293                         unsigned int data_shndx,
2294                         unsigned int sh_type,
2295                         const unsigned char* prelocs,
2296                         size_t reloc_count,
2297                         Output_section* output_section,
2298                         bool needs_special_offset_handling,
2299                         size_t local_symbol_count,
2300                         const unsigned char* plocal_symbols)
2301 {
2302   typedef Target_sparc<size, big_endian> Sparc;
2303   typedef typename Target_sparc<size, big_endian>::Scan Scan;
2304
2305   if (sh_type == elfcpp::SHT_REL)
2306     {
2307       gold_error(_("%s: unsupported REL reloc section"),
2308                  object->name().c_str());
2309       return;
2310     }
2311
2312   gold::scan_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>(
2313     options,
2314     symtab,
2315     layout,
2316     this,
2317     object,
2318     data_shndx,
2319     prelocs,
2320     reloc_count,
2321     output_section,
2322     needs_special_offset_handling,
2323     local_symbol_count,
2324     plocal_symbols);
2325 }
2326
2327 // Finalize the sections.
2328
2329 template<int size, bool big_endian>
2330 void
2331 Target_sparc<size, big_endian>::do_finalize_sections(Layout* layout)
2332 {
2333   // Fill in some more dynamic tags.
2334   Output_data_dynamic* const odyn = layout->dynamic_data();
2335   if (odyn != NULL)
2336     {
2337       if (this->plt_ != NULL)
2338         {
2339           const Output_data* od = this->plt_->rel_plt();
2340           odyn->add_section_size(elfcpp::DT_PLTRELSZ, od);
2341           odyn->add_section_address(elfcpp::DT_JMPREL, od);
2342           odyn->add_constant(elfcpp::DT_PLTREL, elfcpp::DT_RELA);
2343
2344           odyn->add_section_address(elfcpp::DT_PLTGOT, this->plt_);
2345         }
2346
2347       if (this->rela_dyn_ != NULL)
2348         {
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);
2354         }
2355
2356       if (!parameters->options().shared())
2357         {
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);
2361         }
2362     }
2363
2364   // Emit any relocs we saved in an attempt to avoid generating COPY
2365   // relocs.
2366   if (this->copy_relocs_.any_saved_relocs())
2367     this->copy_relocs_.emit(this->rela_dyn_section(layout));
2368 }
2369
2370 // Perform a relocation.
2371
2372 template<int size, bool big_endian>
2373 inline bool
2374 Target_sparc<size, big_endian>::Relocate::relocate(
2375                         const Relocate_info<size, big_endian>* relinfo,
2376                         Target_sparc* target,
2377                         Output_section*,
2378                         size_t relnum,
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)
2386 {
2387   r_type &= 0xff;
2388
2389   if (this->ignore_gd_add_)
2390     {
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"));
2394       else
2395         {
2396           this->ignore_gd_add_ = false;
2397           return false;
2398         }
2399     }
2400
2401   typedef Sparc_relocate_functions<size, big_endian> Reloc;
2402
2403   // Pick the value to use for symbols defined in shared objects.
2404   Symbol_value<size> symval;
2405   if (gsym != NULL
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))
2419     {
2420       elfcpp::Elf_Xword value;
2421
2422       value = target->plt_section()->address() + gsym->plt_offset();
2423
2424       symval.set_output_value(value);
2425
2426       psymval = &symval;
2427     }
2428
2429   const Sized_relobj<size, big_endian>* object = relinfo->object;
2430   const elfcpp::Elf_Xword addend = rela.get_r_addend();
2431
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;
2437   switch (r_type)
2438     {
2439     case elfcpp::R_SPARC_GOT10:
2440     case elfcpp::R_SPARC_GOT13:
2441     case elfcpp::R_SPARC_GOT22:
2442       if (gsym != NULL)
2443         {
2444           gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD));
2445           got_offset = gsym->got_offset(GOT_TYPE_STANDARD);
2446         }
2447       else
2448         {
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);
2452         }
2453       have_got_offset = true;
2454       break;
2455
2456     default:
2457       break;
2458     }
2459
2460   switch (r_type)
2461     {
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:
2466       break;
2467
2468     case elfcpp::R_SPARC_8:
2469       Relocate_functions<size, big_endian>::rela8(view, object,
2470                                                   psymval, addend);
2471       break;
2472
2473     case elfcpp::R_SPARC_16:
2474       Relocate_functions<size, big_endian>::rela16(view, object,
2475                                                    psymval, addend);
2476       break;
2477
2478     case elfcpp::R_SPARC_32:
2479       if (!parameters->options().output_is_position_independent())
2480         Relocate_functions<size, big_endian>::rela32(view, object,
2481                                                      psymval, addend);
2482       break;
2483
2484     case elfcpp::R_SPARC_DISP8:
2485       Reloc::disp8(view, object, psymval, addend, address);
2486       break;
2487
2488     case elfcpp::R_SPARC_DISP16:
2489       Reloc::disp16(view, object, psymval, addend, address);
2490       break;
2491
2492     case elfcpp::R_SPARC_DISP32:
2493       Reloc::disp32(view, object, psymval, addend, address);
2494       break;
2495
2496     case elfcpp::R_SPARC_DISP64:
2497       Reloc::disp64(view, object, psymval, addend, address);
2498       break;
2499
2500     case elfcpp::R_SPARC_WDISP30:
2501     case elfcpp::R_SPARC_WPLT30:
2502       Reloc::wdisp30(view, object, psymval, addend, address);
2503       break;
2504
2505     case elfcpp::R_SPARC_WDISP22:
2506       Reloc::wdisp22(view, object, psymval, addend, address);
2507       break;
2508
2509     case elfcpp::R_SPARC_WDISP19:
2510       Reloc::wdisp19(view, object, psymval, addend, address);
2511       break;
2512
2513     case elfcpp::R_SPARC_WDISP16:
2514       Reloc::wdisp16(view, object, psymval, addend, address);
2515       break;
2516
2517     case elfcpp::R_SPARC_HI22:
2518       Reloc::hi22(view, object, psymval, addend);
2519       break;
2520
2521     case elfcpp::R_SPARC_22:
2522       Reloc::rela32_22(view, object, psymval, addend);
2523       break;
2524
2525     case elfcpp::R_SPARC_13:
2526       Reloc::rela32_13(view, object, psymval, addend);
2527       break;
2528
2529     case elfcpp::R_SPARC_LO10:
2530       Reloc::lo10(view, object, psymval, addend);
2531       break;
2532
2533     case elfcpp::R_SPARC_GOT10:
2534       Reloc::lo10(view, got_offset, addend);
2535       break;
2536
2537     case elfcpp::R_SPARC_GOT13:
2538       Reloc::rela32_13(view, got_offset, addend);
2539       break;
2540
2541     case elfcpp::R_SPARC_GOT22:
2542       Reloc::hi22(view, got_offset, addend);
2543       break;
2544
2545     case elfcpp::R_SPARC_PC10:
2546       Reloc::pc10(view, object, psymval, addend, address);
2547       break;
2548
2549     case elfcpp::R_SPARC_PC22:
2550       Reloc::pc22(view, object, psymval, addend, address);
2551       break;
2552
2553     case elfcpp::R_SPARC_TLS_DTPOFF32:
2554     case elfcpp::R_SPARC_UA32:
2555       Reloc::ua32(view, object, psymval, addend);
2556       break;
2557
2558     case elfcpp::R_SPARC_PLT64:
2559       Relocate_functions<size, big_endian>::rela64(view, object,
2560                                                    psymval, addend);
2561       break;
2562
2563     case elfcpp::R_SPARC_PLT32:
2564       Relocate_functions<size, big_endian>::rela32(view, object,
2565                                                    psymval, addend);
2566       break;
2567
2568     case elfcpp::R_SPARC_HIPLT22:
2569       Reloc::hi22(view, object, psymval, addend);
2570       break;
2571
2572     case elfcpp::R_SPARC_LOPLT10:
2573       Reloc::lo10(view, object, psymval, addend);
2574       break;
2575
2576     case elfcpp::R_SPARC_PCPLT32:
2577       Reloc::disp32(view, object, psymval, addend, address);
2578       break;
2579
2580     case elfcpp::R_SPARC_PCPLT22:
2581       Reloc::pcplt22(view, object, psymval, addend, address);
2582       break;
2583
2584     case elfcpp::R_SPARC_PCPLT10:
2585       Reloc::lo10(view, object, psymval, addend, address);
2586       break;
2587
2588     case elfcpp::R_SPARC_64:
2589       if (!parameters->options().output_is_position_independent())
2590               Relocate_functions<size, big_endian>::rela64(view, object,
2591                                                            psymval, addend);
2592       break;
2593
2594     case elfcpp::R_SPARC_OLO10:
2595       {
2596         unsigned int addend2 = rela.get_r_info() & 0xffffffff;
2597         addend2 = ((addend2 >> 8) ^ 0x800000) - 0x800000;
2598         Reloc::olo10(view, object, psymval, addend, addend2);
2599       }
2600       break;
2601
2602     case elfcpp::R_SPARC_HH22:
2603       Reloc::hh22(view, object, psymval, addend);
2604       break;
2605
2606     case elfcpp::R_SPARC_PC_HH22:
2607       Reloc::pc_hh22(view, object, psymval, addend, address);
2608       break;
2609
2610     case elfcpp::R_SPARC_HM10:
2611       Reloc::hm10(view, object, psymval, addend);
2612       break;
2613
2614     case elfcpp::R_SPARC_PC_HM10:
2615       Reloc::pc_hm10(view, object, psymval, addend, address);
2616       break;
2617
2618     case elfcpp::R_SPARC_LM22:
2619       Reloc::hi22(view, object, psymval, addend);
2620       break;
2621
2622     case elfcpp::R_SPARC_PC_LM22:
2623       Reloc::pcplt22(view, object, psymval, addend, address);
2624       break;
2625
2626     case elfcpp::R_SPARC_11:
2627       Reloc::rela32_11(view, object, psymval, addend);
2628       break;
2629
2630     case elfcpp::R_SPARC_10:
2631       Reloc::rela32_10(view, object, psymval, addend);
2632       break;
2633
2634     case elfcpp::R_SPARC_7:
2635       Reloc::rela32_7(view, object, psymval, addend);
2636       break;
2637
2638     case elfcpp::R_SPARC_6:
2639       Reloc::rela32_6(view, object, psymval, addend);
2640       break;
2641
2642     case elfcpp::R_SPARC_5:
2643       Reloc::rela32_5(view, object, psymval, addend);
2644       break;
2645
2646     case elfcpp::R_SPARC_HIX22:
2647       Reloc::hix22(view, object, psymval, addend);
2648       break;
2649
2650     case elfcpp::R_SPARC_LOX10:
2651       Reloc::lox10(view, object, psymval, addend);
2652       break;
2653
2654     case elfcpp::R_SPARC_H44:
2655       Reloc::h44(view, object, psymval, addend);
2656       break;
2657
2658     case elfcpp::R_SPARC_M44:
2659       Reloc::m44(view, object, psymval, addend);
2660       break;
2661
2662     case elfcpp::R_SPARC_L44:
2663       Reloc::l44(view, object, psymval, addend);
2664       break;
2665
2666     case elfcpp::R_SPARC_TLS_DTPOFF64:
2667     case elfcpp::R_SPARC_UA64:
2668       Reloc::ua64(view, object, psymval, addend);
2669       break;
2670
2671     case elfcpp::R_SPARC_UA16:
2672       Reloc::ua16(view, object, psymval, addend);
2673       break;
2674
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);
2696       break;
2697
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
2703       // linking.
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"),
2710                              r_type);
2711       break;
2712
2713     default:
2714       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2715                              _("unsupported reloc %u"),
2716                              r_type);
2717       break;
2718     }
2719
2720   return true;
2721 }
2722
2723 // Perform a TLS relocation.
2724
2725 template<int size, bool big_endian>
2726 inline void
2727 Target_sparc<size, big_endian>::Relocate::relocate_tls(
2728                         const Relocate_info<size, big_endian>* relinfo,
2729                         Target_sparc<size, big_endian>* target,
2730                         size_t relnum,
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,
2737                         section_size_type)
2738 {
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;
2743
2744   const elfcpp::Elf_Xword addend = rela.get_r_addend();
2745   typename elfcpp::Elf_types<size>::Elf_Addr value = psymval->value(object, 0);
2746
2747   const bool is_final =
2748     (gsym == NULL
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);
2753
2754   switch (r_type)
2755     {
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)
2761         {
2762           Insntype* wv = reinterpret_cast<Insntype*>(view);
2763           Insntype val;
2764
2765           value -= tls_segment->memsz();
2766
2767           switch (r_type)
2768             {
2769             case elfcpp::R_SPARC_TLS_GD_HI22:
2770               // TLS_GD_HI22 --> TLS_LE_HIX22
2771               Reloc::hix22(view, value, addend);
2772               break;
2773
2774             case elfcpp::R_SPARC_TLS_GD_LO10:
2775               // TLS_GD_LO10 --> TLS_LE_LOX10
2776               Reloc::lox10(view, value, addend);
2777               break;
2778
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);
2784               break;
2785             case elfcpp::R_SPARC_TLS_GD_CALL:
2786               // call __tls_get_addr --> nop
2787               elfcpp::Swap<32, true>::writeval(wv, sparc_nop);
2788               break;
2789             }
2790           break;
2791         }
2792       else
2793         {
2794           unsigned int got_type = (optimized_type == tls::TLSOPT_TO_IE
2795                                    ? GOT_TYPE_TLS_OFFSET
2796                                    : GOT_TYPE_TLS_PAIR);
2797           if (gsym != NULL)
2798             {
2799               gold_assert(gsym->has_got_offset(got_type));
2800               value = gsym->got_offset(got_type);
2801             }
2802           else
2803             {
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);
2807             }
2808           if (optimized_type == tls::TLSOPT_TO_IE)
2809             {
2810               Insntype* wv = reinterpret_cast<Insntype*>(view);
2811               Insntype val;
2812
2813               switch (r_type)
2814                 {
2815                 case elfcpp::R_SPARC_TLS_GD_HI22:
2816                   // TLS_GD_HI22 --> TLS_IE_HI22
2817                   Reloc::hi22(view, value, addend);
2818                   break;
2819
2820                 case elfcpp::R_SPARC_TLS_GD_LO10:
2821                   // TLS_GD_LO10 --> TLS_IE_LO10
2822                   Reloc::lo10(view, value, addend);
2823                   break;
2824
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);
2828
2829                   if (size == 64)
2830                     val |= 0xc0580000;
2831                   else
2832                     val |= 0xc0000000;
2833
2834                   elfcpp::Swap<32, true>::writeval(wv, val);
2835                   break;
2836
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.
2842                   //
2843                   // The test we use is if the instruction in the
2844                   // delay slot is an add with destination register
2845                   // equal to %o0
2846                   val = elfcpp::Swap<32, true>::readval(wv + 1);
2847                   if ((val & 0x81f80000) == 0x80000000
2848                       && ((val >> 25) & 0x1f) == 0x8)
2849                     {
2850                       if (size == 64)
2851                         val |= 0xc0580000;
2852                       else
2853                         val |= 0xc0000000;
2854
2855                       elfcpp::Swap<32, true>::writeval(wv, val);
2856
2857                       wv += 1;
2858                       this->ignore_gd_add_ = true;
2859                     }
2860
2861                   // call __tls_get_addr --> add %g7, %o0, %o0
2862                   elfcpp::Swap<32, true>::writeval(wv, 0x9001c008);
2863                   break;
2864                 }
2865               break;
2866             }
2867           else if (optimized_type == tls::TLSOPT_NONE)
2868             {
2869               switch (r_type)
2870                 {
2871                 case elfcpp::R_SPARC_TLS_GD_HI22:
2872                   Reloc::hi22(view, value, addend);
2873                   break;
2874                 case elfcpp::R_SPARC_TLS_GD_LO10:
2875                   Reloc::lo10(view, value, addend);
2876                   break;
2877                 case elfcpp::R_SPARC_TLS_GD_ADD:
2878                   break;
2879                 case elfcpp::R_SPARC_TLS_GD_CALL:
2880                   {
2881                     Symbol_value<size> symval;
2882                     elfcpp::Elf_Xword value;
2883                     Symbol* tsym;
2884
2885                     tsym = target->tls_get_addr_sym_;
2886                     gold_assert(tsym);
2887                     value = (target->plt_section()->address() +
2888                              tsym->plt_offset());
2889                     symval.set_output_value(value);
2890                     Reloc::wdisp30(view, object, &symval, addend, address);
2891                   }
2892                   break;
2893                 }
2894               break;
2895             }
2896         }
2897       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2898                              _("unsupported reloc %u"),
2899                              r_type);
2900       break;
2901
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)
2907         {
2908           Insntype* wv = reinterpret_cast<Insntype*>(view);
2909
2910           switch (r_type)
2911             {
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);
2916               break;
2917
2918             case elfcpp::R_SPARC_TLS_LDM_CALL:
2919               elfcpp::Swap<32, true>::writeval(wv, sparc_mov_g0_o0);
2920               break;
2921             }
2922           break;
2923         }
2924       else if (optimized_type == tls::TLSOPT_NONE)
2925         {
2926           // Relocate the field with the offset of the GOT entry for
2927           // the module index.
2928           unsigned int got_offset;
2929
2930           got_offset = target->got_mod_index_entry(NULL, NULL, NULL);
2931           switch (r_type)
2932             {
2933             case elfcpp::R_SPARC_TLS_LDM_HI22:
2934               Reloc::hi22(view, got_offset, addend);
2935               break;
2936             case elfcpp::R_SPARC_TLS_LDM_LO10:
2937               Reloc::lo10(view, got_offset, addend);
2938               break;
2939             case elfcpp::R_SPARC_TLS_LDM_ADD:
2940               break;
2941             case elfcpp::R_SPARC_TLS_LDM_CALL:
2942               {
2943                 Symbol_value<size> symval;
2944                 elfcpp::Elf_Xword value;
2945                 Symbol* tsym;
2946
2947                 tsym = target->tls_get_addr_sym_;
2948                 gold_assert(tsym);
2949                 value = (target->plt_section()->address() +
2950                          tsym->plt_offset());
2951                 symval.set_output_value(value);
2952                 Reloc::wdisp30(view, object, &symval, addend, address);
2953               }
2954               break;
2955             }
2956           break;
2957         }
2958       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2959                              _("unsupported reloc %u"),
2960                              r_type);
2961       break;
2962
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)
2968         {
2969           value -= tls_segment->memsz();
2970           Reloc::hix22(view, value, addend);
2971         }
2972       else
2973         Reloc::ldo_hix22(view, value, addend);
2974       break;
2975     case elfcpp::R_SPARC_TLS_LDO_LOX10:
2976       if (optimized_type == tls::TLSOPT_TO_LE)
2977         {
2978           value -= tls_segment->memsz();
2979           Reloc::lox10(view, value, addend);
2980         }
2981       else
2982         Reloc::ldo_lox10(view, value, addend);
2983       break;
2984     case elfcpp::R_SPARC_TLS_LDO_ADD:
2985       if (optimized_type == tls::TLSOPT_TO_LE)
2986         {
2987           Insntype* wv = reinterpret_cast<Insntype*>(view);
2988           Insntype val;
2989
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);
2994         }
2995       break;
2996
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)
3004         {
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;
3009
3010           if (rs2 == rd)
3011             val = sparc_nop;
3012           else
3013             val = sparc_mov | (val & 0x3e00001f);
3014
3015           elfcpp::Swap<32, true>::writeval(wv, val);
3016         }
3017       break;
3018
3019     case elfcpp::R_SPARC_TLS_IE_HI22:
3020     case elfcpp::R_SPARC_TLS_IE_LO10:
3021       if (optimized_type == tls::TLSOPT_TO_LE)
3022         {
3023           value -= tls_segment->memsz();
3024           switch (r_type)
3025             {
3026             case elfcpp::R_SPARC_TLS_IE_HI22:
3027               // IE_HI22 --> LE_HIX22
3028               Reloc::hix22(view, value, addend);
3029               break;
3030             case elfcpp::R_SPARC_TLS_IE_LO10:
3031               // IE_LO10 --> LE_LOX10
3032               Reloc::lox10(view, value, addend);
3033               break;
3034             }
3035           break;
3036         }
3037       else if (optimized_type == tls::TLSOPT_NONE)
3038         {
3039           // Relocate the field with the offset of the GOT entry for
3040           // the tp-relative offset of the symbol.
3041           if (gsym != NULL)
3042             {
3043               gold_assert(gsym->has_got_offset(GOT_TYPE_TLS_OFFSET));
3044               value = gsym->got_offset(GOT_TYPE_TLS_OFFSET);
3045             }
3046           else
3047             {
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);
3053             }
3054           switch (r_type)
3055             {
3056             case elfcpp::R_SPARC_TLS_IE_HI22:
3057               Reloc::hi22(view, value, addend);
3058               break;
3059             case elfcpp::R_SPARC_TLS_IE_LO10:
3060               Reloc::lo10(view, value, addend);
3061               break;
3062             }
3063           break;
3064         }
3065       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
3066                              _("unsupported reloc %u"),
3067                              r_type);
3068       break;
3069
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.
3074       break;
3075
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())
3080         {
3081           value -= tls_segment->memsz();
3082           Reloc::hix22(view, value, addend);
3083         }
3084       break;
3085
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())
3090         {
3091           value -= tls_segment->memsz();
3092           Reloc::lox10(view, value, addend);
3093         }
3094       break;
3095     }
3096 }
3097
3098 // Relocate section data.
3099
3100 template<int size, bool big_endian>
3101 void
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,
3106                         size_t reloc_count,
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 {
3113   typedef Target_sparc<size, big_endian> Sparc;
3114   typedef typename Target_sparc<size, big_endian>::Relocate Sparc_relocate;
3115
3116   gold_assert(sh_type == elfcpp::SHT_RELA);
3117
3118   gold::relocate_section<size, big_endian, Sparc, elfcpp::SHT_RELA,
3119     Sparc_relocate>(
3120     relinfo,
3121     this,
3122     prelocs,
3123     reloc_count,
3124     output_section,
3125     needs_special_offset_handling,
3126     view,
3127     address,
3128     view_size);
3129 }
3130
3131 // Return the size of a relocation while scanning during a relocatable
3132 // link.
3133
3134 template<int size, bool big_endian>
3135 unsigned int
3136 Target_sparc<size, big_endian>::Relocatable_size_for_reloc::get_size_for_reloc(
3137     unsigned int,
3138     Relobj*)
3139 {
3140   // We are always SHT_RELA, so we should never get here.
3141   gold_unreachable();
3142   return 0;
3143 }
3144
3145 // Scan the relocs during a relocatable link.
3146
3147 template<int size, bool big_endian>
3148 void
3149 Target_sparc<size, big_endian>::scan_relocatable_relocs(
3150                         const General_options& options,
3151                         Symbol_table* symtab,
3152                         Layout* layout,
3153                         Sized_relobj<size, big_endian>* object,
3154                         unsigned int data_shndx,
3155                         unsigned int sh_type,
3156                         const unsigned char* prelocs,
3157                         size_t reloc_count,
3158                         Output_section* output_section,
3159                         bool needs_special_offset_handling,
3160                         size_t local_symbol_count,
3161                         const unsigned char* plocal_symbols,
3162                         Relocatable_relocs* rr)
3163 {
3164   gold_assert(sh_type == elfcpp::SHT_RELA);
3165
3166   typedef gold::Default_scan_relocatable_relocs<elfcpp::SHT_RELA,
3167     Relocatable_size_for_reloc> Scan_relocatable_relocs;
3168
3169   gold::scan_relocatable_relocs<size, big_endian, elfcpp::SHT_RELA,
3170       Scan_relocatable_relocs>(
3171     options,
3172     symtab,
3173     layout,
3174     object,
3175     data_shndx,
3176     prelocs,
3177     reloc_count,
3178     output_section,
3179     needs_special_offset_handling,
3180     local_symbol_count,
3181     plocal_symbols,
3182     rr);
3183 }
3184
3185 // Relocate a section during a relocatable link.
3186
3187 template<int size, bool big_endian>
3188 void
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,
3193     size_t reloc_count,
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)
3202 {
3203   gold_assert(sh_type == elfcpp::SHT_RELA);
3204
3205   gold::relocate_for_relocatable<size, big_endian, elfcpp::SHT_RELA>(
3206     relinfo,
3207     prelocs,
3208     reloc_count,
3209     output_section,
3210     offset_in_output_section,
3211     rr,
3212     view,
3213     view_address,
3214     view_size,
3215     reloc_view,
3216     reloc_view_size);
3217 }
3218
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.
3223
3224 template<int size, bool big_endian>
3225 uint64_t
3226 Target_sparc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const
3227 {
3228   gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset());
3229   return this->plt_section()->address() + gsym->plt_offset();
3230 }
3231
3232 // The selector for sparc object files.
3233
3234 template<int size, bool big_endian>
3235 class Target_selector_sparc : public Target_selector
3236 {
3237 public:
3238   Target_selector_sparc()
3239     : Target_selector(elfcpp::EM_NONE, size, big_endian,
3240                       (size == 64 ? "elf64-sparc" : "elf32-sparc"))
3241   { }
3242
3243   Target* do_recognize(int machine, int, int)
3244   {
3245     switch (size)
3246       {
3247       case 64:
3248         if (machine != elfcpp::EM_SPARCV9)
3249           return NULL;
3250         break;
3251
3252       case 32:
3253         if (machine != elfcpp::EM_SPARC
3254             && machine != elfcpp::EM_SPARC32PLUS)
3255           return NULL;
3256         break;
3257
3258       default:
3259         return NULL;
3260       }
3261
3262     return this->instantiate_target();
3263   }
3264
3265   Target* do_instantiate_target()
3266   { return new Target_sparc<size, big_endian>(); }
3267 };
3268
3269 Target_selector_sparc<32, true> target_selector_sparc32;
3270 Target_selector_sparc<64, true> target_selector_sparc64;
3271
3272 } // End anonymous namespace.