gold/sparc.cc

   1 // sparc.cc -- sparc target support for gold.
   2
   3 // Copyright 2008, 2009, 2010, 2011, 2012 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 #include "gc.h"
  44
  45 namespace
  46 {
  47
  48 using namespace gold;
  49
  50 template<int size, bool big_endian>
  51 class Output_data_plt_sparc;
  52
  53 template<int size, bool big_endian>
  54 class Target_sparc : public Sized_target<size, big_endian>
  55 {
  56  public:
  57   typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section;
  58
  59   Target_sparc()
  60     : Sized_target<size, big_endian>(&sparc_info),
  61       got_(NULL), plt_(NULL), rela_dyn_(NULL), rela_ifunc_(NULL),
  62       copy_relocs_(elfcpp::R_SPARC_COPY), dynbss_(NULL),
  63       got_mod_index_offset_(-1U), tls_get_addr_sym_(NULL),
  64       elf_machine_(sparc_info.machine_code), elf_flags_(0),
  65       elf_flags_set_(false)
  66   {
  67   }
  68
  69   // Process the relocations to determine unreferenced sections for
  70   // garbage collection.
  71   void
  72   gc_process_relocs(Symbol_table* symtab,
  73                     Layout* layout,
  74                     Sized_relobj_file<size, big_endian>* object,
  75                     unsigned int data_shndx,
  76                     unsigned int sh_type,
  77                     const unsigned char* prelocs,
  78                     size_t reloc_count,
  79                     Output_section* output_section,
  80                     bool needs_special_offset_handling,
  81                     size_t local_symbol_count,
  82                     const unsigned char* plocal_symbols);
  83
  84   // Scan the relocations to look for symbol adjustments.
  85   void
  86   scan_relocs(Symbol_table* symtab,
  87               Layout* layout,
  88               Sized_relobj_file<size, big_endian>* object,
  89               unsigned int data_shndx,
  90               unsigned int sh_type,
  91               const unsigned char* prelocs,
  92               size_t reloc_count,
  93               Output_section* output_section,
  94               bool needs_special_offset_handling,
  95               size_t local_symbol_count,
  96               const unsigned char* plocal_symbols);
  97   // Finalize the sections.
  98   void
  99   do_finalize_sections(Layout*, const Input_objects*, Symbol_table*);
 100
 101   // Return the value to use for a dynamic which requires special
 102   // treatment.
 103   uint64_t
 104   do_dynsym_value(const Symbol*) const;
 105
 106   // Relocate a section.
 107   void
 108   relocate_section(const Relocate_info<size, big_endian>*,
 109                    unsigned int sh_type,
 110                    const unsigned char* prelocs,
 111                    size_t reloc_count,
 112                    Output_section* output_section,
 113                    bool needs_special_offset_handling,
 114                    unsigned char* view,
 115                    typename elfcpp::Elf_types<size>::Elf_Addr view_address,
 116                    section_size_type view_size,
 117                    const Reloc_symbol_changes*);
 118
 119   // Scan the relocs during a relocatable link.
 120   void
 121   scan_relocatable_relocs(Symbol_table* symtab,
 122                           Layout* layout,
 123                           Sized_relobj_file<size, big_endian>* object,
 124                           unsigned int data_shndx,
 125                           unsigned int sh_type,
 126                           const unsigned char* prelocs,
 127                           size_t reloc_count,
 128                           Output_section* output_section,
 129                           bool needs_special_offset_handling,
 130                           size_t local_symbol_count,
 131                           const unsigned char* plocal_symbols,
 132                           Relocatable_relocs*);
 133
 134   // Emit relocations for a section.
 135   void
 136   relocate_relocs(const Relocate_info<size, big_endian>*,
 137                   unsigned int sh_type,
 138                   const unsigned char* prelocs,
 139                   size_t reloc_count,
 140                   Output_section* output_section,
 141                   off_t offset_in_output_section,
 142                   const Relocatable_relocs*,
 143                   unsigned char* view,
 144                   typename elfcpp::Elf_types<size>::Elf_Addr view_address,
 145                   section_size_type view_size,
 146                   unsigned char* reloc_view,
 147                   section_size_type reloc_view_size);
 148
 149   // Return whether SYM is defined by the ABI.
 150   bool
 151   do_is_defined_by_abi(const Symbol* sym) const
 152   {
 153     // XXX Really need to support this better...
 154     if (sym->type() == elfcpp::STT_SPARC_REGISTER)
 155       return 1;
 156
 157     return strcmp(sym->name(), "___tls_get_addr") == 0;
 158   }
 159
 160   // Return the PLT address to use for a global symbol.
 161   uint64_t
 162   do_plt_address_for_global(const Symbol* gsym) const
 163   { return this->plt_section()->address_for_global(gsym); }
 164
 165   uint64_t
 166   do_plt_address_for_local(const Relobj* relobj, unsigned int symndx) const
 167   { return this->plt_section()->address_for_local(relobj, symndx); }
 168
 169   // Return whether there is a GOT section.
 170   bool
 171   has_got_section() const
 172   { return this->got_ != NULL; }
 173
 174   // Return the size of the GOT section.
 175   section_size_type
 176   got_size() const
 177   {
 178     gold_assert(this->got_ != NULL);
 179     return this->got_->data_size();
 180   }
 181
 182   // Return the number of entries in the GOT.
 183   unsigned int
 184   got_entry_count() const
 185   {
 186     if (this->got_ == NULL)
 187       return 0;
 188     return this->got_size() / (size / 8);
 189   }
 190
 191   // Return the address of the GOT.
 192   uint64_t
 193   got_address() const
 194   {
 195     if (this->got_ == NULL)
 196       return 0;
 197     return this->got_->address();
 198   }
 199
 200   // Return the number of entries in the PLT.
 201   unsigned int
 202   plt_entry_count() const;
 203
 204   // Return the offset of the first non-reserved PLT entry.
 205   unsigned int
 206   first_plt_entry_offset() const;
 207
 208   // Return the size of each PLT entry.
 209   unsigned int
 210   plt_entry_size() const;
 211
 212  protected:
 213   // Make an ELF object.
 214   Object*
 215   do_make_elf_object(const std::string&, Input_file*, off_t,
 216                      const elfcpp::Ehdr<size, big_endian>& ehdr);
 217
 218   void
 219   do_adjust_elf_header(unsigned char* view, int len) const;
 220
 221  private:
 222
 223   // The class which scans relocations.
 224   class Scan
 225   {
 226   public:
 227     Scan()
 228       : issued_non_pic_error_(false)
 229     { }
 230
 231     static inline int
 232     get_reference_flags(unsigned int r_type);
 233
 234     inline void
 235     local(Symbol_table* symtab, Layout* layout, Target_sparc* target,
 236           Sized_relobj_file<size, big_endian>* object,
 237           unsigned int data_shndx,
 238           Output_section* output_section,
 239           const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type,
 240           const elfcpp::Sym<size, big_endian>& lsym,
 241           bool is_discarded);
 242
 243     inline void
 244     global(Symbol_table* symtab, Layout* layout, Target_sparc* target,
 245            Sized_relobj_file<size, big_endian>* object,
 246            unsigned int data_shndx,
 247            Output_section* output_section,
 248            const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type,
 249            Symbol* gsym);
 250
 251     inline bool
 252     local_reloc_may_be_function_pointer(Symbol_table* , Layout* ,
 253                                         Target_sparc* ,
 254                                         Sized_relobj_file<size, big_endian>* ,
 255                                         unsigned int ,
 256                                         Output_section* ,
 257                                         const elfcpp::Rela<size, big_endian>& ,
 258                                         unsigned int ,
 259                                         const elfcpp::Sym<size, big_endian>&)
 260     { return false; }
 261
 262     inline bool
 263     global_reloc_may_be_function_pointer(Symbol_table* , Layout* ,
 264                                          Target_sparc* ,
 265                                          Sized_relobj_file<size, big_endian>* ,
 266                                          unsigned int ,
 267                                          Output_section* ,
 268                                          const elfcpp::Rela<size,
 269                                                             big_endian>& ,
 270                                          unsigned int , Symbol*)
 271     { return false; }
 272
 273
 274   private:
 275     static void
 276     unsupported_reloc_local(Sized_relobj_file<size, big_endian>*,
 277                             unsigned int r_type);
 278
 279     static void
 280     unsupported_reloc_global(Sized_relobj_file<size, big_endian>*,
 281                              unsigned int r_type, Symbol*);
 282
 283     static void
 284     generate_tls_call(Symbol_table* symtab, Layout* layout,
 285                       Target_sparc* target);
 286
 287     void
 288     check_non_pic(Relobj*, unsigned int r_type);
 289
 290     bool
 291     reloc_needs_plt_for_ifunc(Sized_relobj_file<size, big_endian>*,
 292                               unsigned int r_type);
 293
 294     // Whether we have issued an error about a non-PIC compilation.
 295     bool issued_non_pic_error_;
 296   };
 297
 298   // The class which implements relocation.
 299   class Relocate
 300   {
 301    public:
 302     Relocate()
 303       : ignore_gd_add_(false), reloc_adjust_addr_(NULL)
 304     { }
 305
 306     ~Relocate()
 307     {
 308       if (this->ignore_gd_add_)
 309         {
 310           // FIXME: This needs to specify the location somehow.
 311           gold_error(_("missing expected TLS relocation"));
 312         }
 313     }
 314
 315     // Do a relocation.  Return false if the caller should not issue
 316     // any warnings about this relocation.
 317     inline bool
 318     relocate(const Relocate_info<size, big_endian>*, Target_sparc*,
 319              Output_section*, size_t relnum,
 320              const elfcpp::Rela<size, big_endian>&,
 321              unsigned int r_type, const Sized_symbol<size>*,
 322              const Symbol_value<size>*,
 323              unsigned char*,
 324              typename elfcpp::Elf_types<size>::Elf_Addr,
 325              section_size_type);
 326
 327    private:
 328     // Do a TLS relocation.
 329     inline void
 330     relocate_tls(const Relocate_info<size, big_endian>*, Target_sparc* target,
 331                  size_t relnum, const elfcpp::Rela<size, big_endian>&,
 332                  unsigned int r_type, const Sized_symbol<size>*,
 333                  const Symbol_value<size>*,
 334                  unsigned char*,
 335                  typename elfcpp::Elf_types<size>::Elf_Addr,
 336                  section_size_type);
 337
 338     inline void
 339     relax_call(Target_sparc<size, big_endian>* target,
 340                unsigned char* view,
 341                const elfcpp::Rela<size, big_endian>& rela,
 342                section_size_type view_size);
 343
 344     // Ignore the next relocation which should be R_SPARC_TLS_GD_ADD
 345     bool ignore_gd_add_;
 346
 347     // If we hit a reloc at this view address, adjust it back by 4 bytes.
 348     unsigned char *reloc_adjust_addr_;
 349   };
 350
 351   // A class which returns the size required for a relocation type,
 352   // used while scanning relocs during a relocatable link.
 353   class Relocatable_size_for_reloc
 354   {
 355    public:
 356     unsigned int
 357     get_size_for_reloc(unsigned int, Relobj*);
 358   };
 359
 360   // Get the GOT section, creating it if necessary.
 361   Output_data_got<size, big_endian>*
 362   got_section(Symbol_table*, Layout*);
 363
 364   // Create the PLT section.
 365   void
 366   make_plt_section(Symbol_table* symtab, Layout* layout);
 367
 368   // Create a PLT entry for a global symbol.
 369   void
 370   make_plt_entry(Symbol_table*, Layout*, Symbol*);
 371
 372   // Create a PLT entry for a local STT_GNU_IFUNC symbol.
 373   void
 374   make_local_ifunc_plt_entry(Symbol_table*, Layout*,
 375                              Sized_relobj_file<size, big_endian>* relobj,
 376                              unsigned int local_sym_index);
 377
 378   // Create a GOT entry for the TLS module index.
 379   unsigned int
 380   got_mod_index_entry(Symbol_table* symtab, Layout* layout,
 381                       Sized_relobj_file<size, big_endian>* object);
 382
 383   // Return the gsym for "__tls_get_addr".  Cache if not already
 384   // cached.
 385   Symbol*
 386   tls_get_addr_sym(Symbol_table* symtab)
 387   {
 388     if (!this->tls_get_addr_sym_)
 389       this->tls_get_addr_sym_ = symtab->lookup("__tls_get_addr", NULL);
 390     gold_assert(this->tls_get_addr_sym_);
 391     return this->tls_get_addr_sym_;
 392   }
 393
 394   // Get the PLT section.
 395   Output_data_plt_sparc<size, big_endian>*
 396   plt_section() const
 397   {
 398     gold_assert(this->plt_ != NULL);
 399     return this->plt_;
 400   }
 401
 402   // Get the dynamic reloc section, creating it if necessary.
 403   Reloc_section*
 404   rela_dyn_section(Layout*);
 405
 406   // Get the section to use for IFUNC relocations.
 407   Reloc_section*
 408   rela_ifunc_section(Layout*);
 409
 410   // Copy a relocation against a global symbol.
 411   void
 412   copy_reloc(Symbol_table* symtab, Layout* layout,
 413              Sized_relobj_file<size, big_endian>* object,
 414              unsigned int shndx, Output_section* output_section,
 415              Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc)
 416   {
 417     this->copy_relocs_.copy_reloc(symtab, layout,
 418                                   symtab->get_sized_symbol<size>(sym),
 419                                   object, shndx, output_section,
 420                                   reloc, this->rela_dyn_section(layout));
 421   }
 422
 423   // Information about this specific target which we pass to the
 424   // general Target structure.
 425   static Target::Target_info sparc_info;
 426
 427   // The types of GOT entries needed for this platform.
 428   // These values are exposed to the ABI in an incremental link.
 429   // Do not renumber existing values without changing the version
 430   // number of the .gnu_incremental_inputs section.
 431   enum Got_type
 432   {
 433     GOT_TYPE_STANDARD = 0,      // GOT entry for a regular symbol
 434     GOT_TYPE_TLS_OFFSET = 1,    // GOT entry for TLS offset
 435     GOT_TYPE_TLS_PAIR = 2,      // GOT entry for TLS module/offset pair
 436   };
 437
 438   // The GOT section.
 439   Output_data_got<size, big_endian>* got_;
 440   // The PLT section.
 441   Output_data_plt_sparc<size, big_endian>* plt_;
 442   // The dynamic reloc section.
 443   Reloc_section* rela_dyn_;
 444   // The section to use for IFUNC relocs.
 445   Reloc_section* rela_ifunc_;
 446   // Relocs saved to avoid a COPY reloc.
 447   Copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_;
 448   // Space for variables copied with a COPY reloc.
 449   Output_data_space* dynbss_;
 450   // Offset of the GOT entry for the TLS module index;
 451   unsigned int got_mod_index_offset_;
 452   // Cached pointer to __tls_get_addr symbol
 453   Symbol* tls_get_addr_sym_;
 454   // Accumulated elf machine type
 455   elfcpp::Elf_Half elf_machine_;
 456   // Accumulated elf header flags
 457   elfcpp::Elf_Word elf_flags_;
 458   // Whether elf_flags_ has been set for the first time yet
 459   bool elf_flags_set_;
 460 };
 461
 462 template<>
 463 Target::Target_info Target_sparc<32, true>::sparc_info =
 464 {
 465   32,                   // size
 466   true,                 // is_big_endian
 467   elfcpp::EM_SPARC,     // machine_code
 468   false,                // has_make_symbol
 469   false,                // has_resolve
 470   false,                // has_code_fill
 471   true,                 // is_default_stack_executable
 472   false,                // can_icf_inline_merge_sections
 473   '\0',                 // wrap_char
 474   "/usr/lib/ld.so.1",   // dynamic_linker
 475   0x00010000,           // default_text_segment_address
 476   64 * 1024,            // abi_pagesize (overridable by -z max-page-size)
 477   8 * 1024,             // common_pagesize (overridable by -z common-page-size)
 478   false,                // isolate_execinstr
 479   0,                    // rosegment_gap
 480   elfcpp::SHN_UNDEF,    // small_common_shndx
 481   elfcpp::SHN_UNDEF,    // large_common_shndx
 482   0,                    // small_common_section_flags
 483   0,                    // large_common_section_flags
 484   NULL,                 // attributes_section
 485   NULL                  // attributes_vendor
 486 };
 487
 488 template<>
 489 Target::Target_info Target_sparc<64, true>::sparc_info =
 490 {
 491   64,                   // size
 492   true,                 // is_big_endian
 493   elfcpp::EM_SPARCV9,   // machine_code
 494   false,                // has_make_symbol
 495   false,                // has_resolve
 496   false,                // has_code_fill
 497   true,                 // is_default_stack_executable
 498   false,                // can_icf_inline_merge_sections
 499   '\0',                 // wrap_char
 500   "/usr/lib/sparcv9/ld.so.1",   // dynamic_linker
 501   0x100000,             // default_text_segment_address
 502   64 * 1024,            // abi_pagesize (overridable by -z max-page-size)
 503   8 * 1024,             // common_pagesize (overridable by -z common-page-size)
 504   false,                // isolate_execinstr
 505   0,                    // rosegment_gap
 506   elfcpp::SHN_UNDEF,    // small_common_shndx
 507   elfcpp::SHN_UNDEF,    // large_common_shndx
 508   0,                    // small_common_section_flags
 509   0,                    // large_common_section_flags
 510   NULL,                 // attributes_section
 511   NULL                  // attributes_vendor
 512 };
 513
 514 // We have to take care here, even when operating in little-endian
 515 // mode, sparc instructions are still big endian.
 516 template<int size, bool big_endian>
 517 class Sparc_relocate_functions
 518 {
 519 private:
 520   // Do a simple relocation with the addend in the relocation.
 521   template<int valsize>
 522   static inline void
 523   rela(unsigned char* view,
 524        unsigned int right_shift,
 525        typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
 526        typename elfcpp::Swap<size, big_endian>::Valtype value,
 527        typename elfcpp::Swap<size, big_endian>::Valtype addend)
 528   {
 529     typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
 530     Valtype* wv = reinterpret_cast<Valtype*>(view);
 531     Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
 532     Valtype reloc = ((value + addend) >> right_shift);
 533
 534     val &= ~dst_mask;
 535     reloc &= dst_mask;
 536
 537     elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
 538   }
 539
 540   // Do a simple relocation using a symbol value with the addend in
 541   // the relocation.
 542   template<int valsize>
 543   static inline void
 544   rela(unsigned char* view,
 545        unsigned int right_shift,
 546        typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
 547        const Sized_relobj_file<size, big_endian>* object,
 548        const Symbol_value<size>* psymval,
 549        typename elfcpp::Swap<valsize, big_endian>::Valtype addend)
 550   {
 551     typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
 552     Valtype* wv = reinterpret_cast<Valtype*>(view);
 553     Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
 554     Valtype reloc = (psymval->value(object, addend) >> right_shift);
 555
 556     val &= ~dst_mask;
 557     reloc &= dst_mask;
 558
 559     elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
 560   }
 561
 562   // Do a simple relocation using a symbol value with the addend in
 563   // the relocation, unaligned.
 564   template<int valsize>
 565   static inline void
 566   rela_ua(unsigned char* view,
 567           unsigned int right_shift, elfcpp::Elf_Xword dst_mask,
 568           const Sized_relobj_file<size, big_endian>* object,
 569           const Symbol_value<size>* psymval,
 570           typename elfcpp::Swap<size, big_endian>::Valtype addend)
 571   {
 572     typedef typename elfcpp::Swap_unaligned<valsize,
 573             big_endian>::Valtype Valtype;
 574     unsigned char* wv = view;
 575     Valtype val = elfcpp::Swap_unaligned<valsize, big_endian>::readval(wv);
 576     Valtype reloc = (psymval->value(object, addend) >> right_shift);
 577
 578     val &= ~dst_mask;
 579     reloc &= dst_mask;
 580
 581     elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, val | reloc);
 582   }
 583
 584   // Do a simple PC relative relocation with a Symbol_value with the
 585   // addend in the relocation.
 586   template<int valsize>
 587   static inline void
 588   pcrela(unsigned char* view,
 589          unsigned int right_shift,
 590          typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
 591          const Sized_relobj_file<size, big_endian>* object,
 592          const Symbol_value<size>* psymval,
 593          typename elfcpp::Swap<size, big_endian>::Valtype addend,
 594          typename elfcpp::Elf_types<size>::Elf_Addr address)
 595   {
 596     typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
 597     Valtype* wv = reinterpret_cast<Valtype*>(view);
 598     Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
 599     Valtype reloc = ((psymval->value(object, addend) - address)
 600                      >> right_shift);
 601
 602     val &= ~dst_mask;
 603     reloc &= dst_mask;
 604
 605     elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
 606   }
 607
 608   template<int valsize>
 609   static inline void
 610   pcrela_unaligned(unsigned char* view,
 611                    const Sized_relobj_file<size, big_endian>* object,
 612                    const Symbol_value<size>* psymval,
 613                    typename elfcpp::Swap<size, big_endian>::Valtype addend,
 614                    typename elfcpp::Elf_types<size>::Elf_Addr address)
 615   {
 616     typedef typename elfcpp::Swap_unaligned<valsize,
 617             big_endian>::Valtype Valtype;
 618     unsigned char* wv = view;
 619     Valtype reloc = (psymval->value(object, addend) - address);
 620
 621     elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, reloc);
 622   }
 623
 624   typedef Sparc_relocate_functions<size, big_endian> This;
 625   typedef Sparc_relocate_functions<size, true> This_insn;
 626
 627 public:
 628   // R_SPARC_WDISP30: (Symbol + Addend - Address) >> 2
 629   static inline void
 630   wdisp30(unsigned char* view,
 631            const Sized_relobj_file<size, big_endian>* object,
 632            const Symbol_value<size>* psymval,
 633            typename elfcpp::Elf_types<size>::Elf_Addr addend,
 634            typename elfcpp::Elf_types<size>::Elf_Addr address)
 635   {
 636     This_insn::template pcrela<32>(view, 2, 0x3fffffff, object,
 637                                    psymval, addend, address);
 638   }
 639
 640   // R_SPARC_WDISP22: (Symbol + Addend - Address) >> 2
 641   static inline void
 642   wdisp22(unsigned char* view,
 643            const Sized_relobj_file<size, big_endian>* object,
 644            const Symbol_value<size>* psymval,
 645            typename elfcpp::Elf_types<size>::Elf_Addr addend,
 646            typename elfcpp::Elf_types<size>::Elf_Addr address)
 647   {
 648     This_insn::template pcrela<32>(view, 2, 0x003fffff, object,
 649                                    psymval, addend, address);
 650   }
 651
 652   // R_SPARC_WDISP19: (Symbol + Addend - Address) >> 2
 653   static inline void
 654   wdisp19(unsigned char* view,
 655           const Sized_relobj_file<size, big_endian>* object,
 656           const Symbol_value<size>* psymval,
 657           typename elfcpp::Elf_types<size>::Elf_Addr addend,
 658           typename elfcpp::Elf_types<size>::Elf_Addr address)
 659   {
 660     This_insn::template pcrela<32>(view, 2, 0x0007ffff, object,
 661                                    psymval, addend, address);
 662   }
 663
 664   // R_SPARC_WDISP16: (Symbol + Addend - Address) >> 2
 665   static inline void
 666   wdisp16(unsigned char* view,
 667           const Sized_relobj_file<size, big_endian>* object,
 668           const Symbol_value<size>* psymval,
 669           typename elfcpp::Elf_types<size>::Elf_Addr addend,
 670           typename elfcpp::Elf_types<size>::Elf_Addr address)
 671   {
 672     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
 673     Valtype* wv = reinterpret_cast<Valtype*>(view);
 674     Valtype val = elfcpp::Swap<32, true>::readval(wv);
 675     Valtype reloc = ((psymval->value(object, addend) - address)
 676                      >> 2);
 677
 678     // The relocation value is split between the low 14 bits,
 679     // and bits 20-21.
 680     val &= ~((0x3 << 20) | 0x3fff);
 681     reloc = (((reloc & 0xc000) << (20 - 14))
 682              | (reloc & 0x3ffff));
 683
 684     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
 685   }
 686
 687   // R_SPARC_WDISP10: (Symbol + Addend - Address) >> 2
 688   static inline void
 689   wdisp10(unsigned char* view,
 690           const Sized_relobj_file<size, big_endian>* object,
 691           const Symbol_value<size>* psymval,
 692           typename elfcpp::Elf_types<size>::Elf_Addr addend,
 693           typename elfcpp::Elf_types<size>::Elf_Addr address)
 694   {
 695     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
 696     Valtype* wv = reinterpret_cast<Valtype*>(view);
 697     Valtype val = elfcpp::Swap<32, true>::readval(wv);
 698     Valtype reloc = ((psymval->value(object, addend) - address)
 699                      >> 2);
 700
 701     // The relocation value is split between the low bits 5-12,
 702     // and high bits 19-20.
 703     val &= ~((0x3 << 19) | (0xff << 5));
 704     reloc = (((reloc & 0x300) << (19 - 8))
 705              | ((reloc & 0xff) << (5 - 0)));
 706
 707     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
 708   }
 709
 710   // R_SPARC_PC22: (Symbol + Addend - Address) >> 10
 711   static inline void
 712   pc22(unsigned char* view,
 713        const Sized_relobj_file<size, big_endian>* object,
 714        const Symbol_value<size>* psymval,
 715        typename elfcpp::Elf_types<size>::Elf_Addr addend,
 716        typename elfcpp::Elf_types<size>::Elf_Addr address)
 717   {
 718     This_insn::template pcrela<32>(view, 10, 0x003fffff, object,
 719                                    psymval, addend, address);
 720   }
 721
 722   // R_SPARC_PC10: (Symbol + Addend - Address) & 0x3ff
 723   static inline void
 724   pc10(unsigned char* view,
 725        const Sized_relobj_file<size, big_endian>* object,
 726        const Symbol_value<size>* psymval,
 727        typename elfcpp::Elf_types<size>::Elf_Addr addend,
 728        typename elfcpp::Elf_types<size>::Elf_Addr address)
 729   {
 730     This_insn::template pcrela<32>(view, 0, 0x000003ff, object,
 731                                    psymval, addend, address);
 732   }
 733
 734   // R_SPARC_HI22: (Symbol + Addend) >> 10
 735   static inline void
 736   hi22(unsigned char* view,
 737        typename elfcpp::Elf_types<size>::Elf_Addr value,
 738        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 739   {
 740     This_insn::template rela<32>(view, 10, 0x003fffff, value, addend);
 741   }
 742
 743   // R_SPARC_HI22: (Symbol + Addend) >> 10
 744   static inline void
 745   hi22(unsigned char* view,
 746        const Sized_relobj_file<size, big_endian>* object,
 747        const Symbol_value<size>* psymval,
 748        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 749   {
 750     This_insn::template rela<32>(view, 10, 0x003fffff, object, psymval, addend);
 751   }
 752
 753   // R_SPARC_PCPLT22: (Symbol + Addend - Address) >> 10
 754   static inline void
 755   pcplt22(unsigned char* view,
 756           const Sized_relobj_file<size, big_endian>* object,
 757           const Symbol_value<size>* psymval,
 758           typename elfcpp::Elf_types<size>::Elf_Addr addend,
 759           typename elfcpp::Elf_types<size>::Elf_Addr address)
 760   {
 761     This_insn::template pcrela<32>(view, 10, 0x003fffff, object,
 762                                    psymval, addend, address);
 763   }
 764
 765   // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
 766   static inline void
 767   lo10(unsigned char* view,
 768        typename elfcpp::Elf_types<size>::Elf_Addr value,
 769        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 770   {
 771     This_insn::template rela<32>(view, 0, 0x000003ff, value, addend);
 772   }
 773
 774   // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
 775   static inline void
 776   lo10(unsigned char* view,
 777        const Sized_relobj_file<size, big_endian>* object,
 778        const Symbol_value<size>* psymval,
 779        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 780   {
 781     This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend);
 782   }
 783
 784   // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
 785   static inline void
 786   lo10(unsigned char* view,
 787        const Sized_relobj_file<size, big_endian>* object,
 788        const Symbol_value<size>* psymval,
 789        typename elfcpp::Elf_types<size>::Elf_Addr addend,
 790        typename elfcpp::Elf_types<size>::Elf_Addr address)
 791   {
 792     This_insn::template pcrela<32>(view, 0, 0x000003ff, object,
 793                                    psymval, addend, address);
 794   }
 795
 796   // R_SPARC_OLO10: ((Symbol + Addend) & 0x3ff) + Addend2
 797   static inline void
 798   olo10(unsigned char* view,
 799         const Sized_relobj_file<size, big_endian>* object,
 800         const Symbol_value<size>* psymval,
 801         typename elfcpp::Elf_types<size>::Elf_Addr addend,
 802         typename elfcpp::Elf_types<size>::Elf_Addr addend2)
 803   {
 804     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
 805     Valtype* wv = reinterpret_cast<Valtype*>(view);
 806     Valtype val = elfcpp::Swap<32, true>::readval(wv);
 807     Valtype reloc = psymval->value(object, addend);
 808
 809     val &= ~0x1fff;
 810     reloc &= 0x3ff;
 811     reloc += addend2;
 812     reloc &= 0x1fff;
 813
 814     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
 815   }
 816
 817   // R_SPARC_22: (Symbol + Addend)
 818   static inline void
 819   rela32_22(unsigned char* view,
 820             const Sized_relobj_file<size, big_endian>* object,
 821             const Symbol_value<size>* psymval,
 822             typename elfcpp::Elf_types<size>::Elf_Addr addend)
 823   {
 824     This_insn::template rela<32>(view, 0, 0x003fffff, object, psymval, addend);
 825   }
 826
 827   // R_SPARC_13: (Symbol + Addend)
 828   static inline void
 829   rela32_13(unsigned char* view,
 830             typename elfcpp::Elf_types<size>::Elf_Addr value,
 831             typename elfcpp::Elf_types<size>::Elf_Addr addend)
 832   {
 833     This_insn::template rela<32>(view, 0, 0x00001fff, value, addend);
 834   }
 835
 836   // R_SPARC_13: (Symbol + Addend)
 837   static inline void
 838   rela32_13(unsigned char* view,
 839             const Sized_relobj_file<size, big_endian>* object,
 840             const Symbol_value<size>* psymval,
 841             typename elfcpp::Elf_types<size>::Elf_Addr addend)
 842   {
 843     This_insn::template rela<32>(view, 0, 0x00001fff, object, psymval, addend);
 844   }
 845
 846   // R_SPARC_UA16: (Symbol + Addend)
 847   static inline void
 848   ua16(unsigned char* view,
 849        const Sized_relobj_file<size, big_endian>* object,
 850        const Symbol_value<size>* psymval,
 851        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 852   {
 853     This::template rela_ua<16>(view, 0, 0xffff, object, psymval, addend);
 854   }
 855
 856   // R_SPARC_UA32: (Symbol + Addend)
 857   static inline void
 858   ua32(unsigned char* view,
 859        const Sized_relobj_file<size, big_endian>* object,
 860        const Symbol_value<size>* psymval,
 861        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 862   {
 863     This::template rela_ua<32>(view, 0, 0xffffffff, object, psymval, addend);
 864   }
 865
 866   // R_SPARC_UA64: (Symbol + Addend)
 867   static inline void
 868   ua64(unsigned char* view,
 869        const Sized_relobj_file<size, big_endian>* object,
 870        const Symbol_value<size>* psymval,
 871        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 872   {
 873     This::template rela_ua<64>(view, 0, ~(elfcpp::Elf_Xword) 0,
 874                                object, psymval, addend);
 875   }
 876
 877   // R_SPARC_DISP8: (Symbol + Addend - Address)
 878   static inline void
 879   disp8(unsigned char* view,
 880         const Sized_relobj_file<size, big_endian>* object,
 881         const Symbol_value<size>* psymval,
 882         typename elfcpp::Elf_types<size>::Elf_Addr addend,
 883         typename elfcpp::Elf_types<size>::Elf_Addr address)
 884   {
 885     This::template pcrela_unaligned<8>(view, object, psymval,
 886                                        addend, address);
 887   }
 888
 889   // R_SPARC_DISP16: (Symbol + Addend - Address)
 890   static inline void
 891   disp16(unsigned char* view,
 892          const Sized_relobj_file<size, big_endian>* object,
 893          const Symbol_value<size>* psymval,
 894          typename elfcpp::Elf_types<size>::Elf_Addr addend,
 895          typename elfcpp::Elf_types<size>::Elf_Addr address)
 896   {
 897     This::template pcrela_unaligned<16>(view, object, psymval,
 898                                         addend, address);
 899   }
 900
 901   // R_SPARC_DISP32: (Symbol + Addend - Address)
 902   static inline void
 903   disp32(unsigned char* view,
 904          const Sized_relobj_file<size, big_endian>* object,
 905          const Symbol_value<size>* psymval,
 906          typename elfcpp::Elf_types<size>::Elf_Addr addend,
 907          typename elfcpp::Elf_types<size>::Elf_Addr address)
 908   {
 909     This::template pcrela_unaligned<32>(view, object, psymval,
 910                                         addend, address);
 911   }
 912
 913   // R_SPARC_DISP64: (Symbol + Addend - Address)
 914   static inline void
 915   disp64(unsigned char* view,
 916          const Sized_relobj_file<size, big_endian>* object,
 917          const Symbol_value<size>* psymval,
 918          elfcpp::Elf_Xword addend,
 919          typename elfcpp::Elf_types<size>::Elf_Addr address)
 920   {
 921     This::template pcrela_unaligned<64>(view, object, psymval,
 922                                         addend, address);
 923   }
 924
 925   // R_SPARC_H34: (Symbol + Addend) >> 12
 926   static inline void
 927   h34(unsigned char* view,
 928       const Sized_relobj_file<size, big_endian>* object,
 929       const Symbol_value<size>* psymval,
 930       typename elfcpp::Elf_types<size>::Elf_Addr  addend)
 931   {
 932     This_insn::template rela<32>(view, 12, 0x003fffff, object, psymval, addend);
 933   }
 934
 935   // R_SPARC_H44: (Symbol + Addend) >> 22
 936   static inline void
 937   h44(unsigned char* view,
 938       const Sized_relobj_file<size, big_endian>* object,
 939       const Symbol_value<size>* psymval,
 940       typename elfcpp::Elf_types<size>::Elf_Addr  addend)
 941   {
 942     This_insn::template rela<32>(view, 22, 0x003fffff, object, psymval, addend);
 943   }
 944
 945   // R_SPARC_M44: ((Symbol + Addend) >> 12) & 0x3ff
 946   static inline void
 947   m44(unsigned char* view,
 948       const Sized_relobj_file<size, big_endian>* object,
 949       const Symbol_value<size>* psymval,
 950       typename elfcpp::Elf_types<size>::Elf_Addr  addend)
 951   {
 952     This_insn::template rela<32>(view, 12, 0x000003ff, object, psymval, addend);
 953   }
 954
 955   // R_SPARC_L44: (Symbol + Addend) & 0xfff
 956   static inline void
 957   l44(unsigned char* view,
 958       const Sized_relobj_file<size, big_endian>* object,
 959       const Symbol_value<size>* psymval,
 960       typename elfcpp::Elf_types<size>::Elf_Addr  addend)
 961   {
 962     This_insn::template rela<32>(view, 0, 0x00000fff, object, psymval, addend);
 963   }
 964
 965   // R_SPARC_HH22: (Symbol + Addend) >> 42
 966   static inline void
 967   hh22(unsigned char* view,
 968        const Sized_relobj_file<size, big_endian>* object,
 969        const Symbol_value<size>* psymval,
 970        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 971   {
 972     This_insn::template rela<32>(view, 42, 0x003fffff, object, psymval, addend);
 973   }
 974
 975   // R_SPARC_PC_HH22: (Symbol + Addend - Address) >> 42
 976   static inline void
 977   pc_hh22(unsigned char* view,
 978           const Sized_relobj_file<size, big_endian>* object,
 979           const Symbol_value<size>* psymval,
 980           typename elfcpp::Elf_types<size>::Elf_Addr addend,
 981           typename elfcpp::Elf_types<size>::Elf_Addr address)
 982   {
 983     This_insn::template pcrela<32>(view, 42, 0x003fffff, object,
 984                                    psymval, addend, address);
 985   }
 986
 987   // R_SPARC_HM10: ((Symbol + Addend) >> 32) & 0x3ff
 988   static inline void
 989   hm10(unsigned char* view,
 990        const Sized_relobj_file<size, big_endian>* object,
 991        const Symbol_value<size>* psymval,
 992        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 993   {
 994     This_insn::template rela<32>(view, 32, 0x000003ff, object, psymval, addend);
 995   }
 996
 997   // R_SPARC_PC_HM10: ((Symbol + Addend - Address) >> 32) & 0x3ff
 998   static inline void
 999   pc_hm10(unsigned char* view,
1000           const Sized_relobj_file<size, big_endian>* object,
1001           const Symbol_value<size>* psymval,
1002           typename elfcpp::Elf_types<size>::Elf_Addr addend,
1003           typename elfcpp::Elf_types<size>::Elf_Addr address)
1004   {
1005     This_insn::template pcrela<32>(view, 32, 0x000003ff, object,
1006                                    psymval, addend, address);
1007   }
1008
1009   // R_SPARC_11: (Symbol + Addend)
1010   static inline void
1011   rela32_11(unsigned char* view,
1012             const Sized_relobj_file<size, big_endian>* object,
1013             const Symbol_value<size>* psymval,
1014             typename elfcpp::Elf_types<size>::Elf_Addr addend)
1015   {
1016     This_insn::template rela<32>(view, 0, 0x000007ff, object, psymval, addend);
1017   }
1018
1019   // R_SPARC_10: (Symbol + Addend)
1020   static inline void
1021   rela32_10(unsigned char* view,
1022             const Sized_relobj_file<size, big_endian>* object,
1023             const Symbol_value<size>* psymval,
1024             typename elfcpp::Elf_types<size>::Elf_Addr addend)
1025   {
1026     This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend);
1027   }
1028
1029   // R_SPARC_7: (Symbol + Addend)
1030   static inline void
1031   rela32_7(unsigned char* view,
1032            const Sized_relobj_file<size, big_endian>* object,
1033            const Symbol_value<size>* psymval,
1034            typename elfcpp::Elf_types<size>::Elf_Addr addend)
1035   {
1036     This_insn::template rela<32>(view, 0, 0x0000007f, object, psymval, addend);
1037   }
1038
1039   // R_SPARC_6: (Symbol + Addend)
1040   static inline void
1041   rela32_6(unsigned char* view,
1042            const Sized_relobj_file<size, big_endian>* object,
1043            const Symbol_value<size>* psymval,
1044            typename elfcpp::Elf_types<size>::Elf_Addr addend)
1045   {
1046     This_insn::template rela<32>(view, 0, 0x0000003f, object, psymval, addend);
1047   }
1048
1049   // R_SPARC_5: (Symbol + Addend)
1050   static inline void
1051   rela32_5(unsigned char* view,
1052            const Sized_relobj_file<size, big_endian>* object,
1053            const Symbol_value<size>* psymval,
1054            typename elfcpp::Elf_types<size>::Elf_Addr addend)
1055   {
1056     This_insn::template rela<32>(view, 0, 0x0000001f, object, psymval, addend);
1057   }
1058
1059   // R_SPARC_TLS_LDO_HIX22: @dtpoff(Symbol + Addend) >> 10
1060   static inline void
1061   ldo_hix22(unsigned char* view,
1062             typename elfcpp::Elf_types<size>::Elf_Addr value,
1063             typename elfcpp::Elf_types<size>::Elf_Addr addend)
1064   {
1065     This_insn::hi22(view, value, addend);
1066   }
1067
1068   // R_SPARC_TLS_LDO_LOX10: @dtpoff(Symbol + Addend) & 0x3ff
1069   static inline void
1070   ldo_lox10(unsigned char* view,
1071             typename elfcpp::Elf_types<size>::Elf_Addr value,
1072             typename elfcpp::Elf_types<size>::Elf_Addr addend)
1073   {
1074     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
1075     Valtype* wv = reinterpret_cast<Valtype*>(view);
1076     Valtype val = elfcpp::Swap<32, true>::readval(wv);
1077     Valtype reloc = (value + addend);
1078
1079     val &= ~0x1fff;
1080     reloc &= 0x3ff;
1081
1082     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
1083   }
1084
1085   // R_SPARC_TLS_LE_HIX22: (@tpoff(Symbol + Addend) ^ 0xffffffffffffffff) >> 10
1086   static inline void
1087   hix22(unsigned char* view,
1088         typename elfcpp::Elf_types<size>::Elf_Addr value,
1089         typename elfcpp::Elf_types<size>::Elf_Addr addend)
1090   {
1091     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
1092     Valtype* wv = reinterpret_cast<Valtype*>(view);
1093     Valtype val = elfcpp::Swap<32, true>::readval(wv);
1094     Valtype reloc = (value + addend);
1095
1096     val &= ~0x3fffff;
1097
1098     reloc ^= ~(Valtype)0;
1099     reloc >>= 10;
1100
1101     reloc &= 0x3fffff;
1102
1103     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
1104   }
1105
1106   // R_SPARC_GOTDATA_OP_HIX22: @gdopoff(Symbol + Addend) >> 10
1107   static inline void
1108   gdop_hix22(unsigned char* view,
1109              typename elfcpp::Elf_types<size>::Elf_Addr value,
1110              typename elfcpp::Elf_types<size>::Elf_Addr addend)
1111   {
1112     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
1113     Valtype* wv = reinterpret_cast<Valtype*>(view);
1114     Valtype val = elfcpp::Swap<32, true>::readval(wv);
1115     int32_t reloc = static_cast<int32_t>(value + addend);
1116
1117     val &= ~0x3fffff;
1118
1119     if (reloc < 0)
1120       reloc ^= ~static_cast<int32_t>(0);
1121     reloc >>= 10;
1122
1123     reloc &= 0x3fffff;
1124
1125     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
1126   }
1127
1128   // R_SPARC_HIX22: ((Symbol + Addend) ^ 0xffffffffffffffff) >> 10
1129   static inline void
1130   hix22(unsigned char* view,
1131         const Sized_relobj_file<size, big_endian>* object,
1132         const Symbol_value<size>* psymval,
1133         typename elfcpp::Elf_types<size>::Elf_Addr addend)
1134   {
1135     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
1136     Valtype* wv = reinterpret_cast<Valtype*>(view);
1137     Valtype val = elfcpp::Swap<32, true>::readval(wv);
1138     Valtype reloc = psymval->value(object, addend);
1139
1140     val &= ~0x3fffff;
1141
1142     reloc ^= ~(Valtype)0;
1143     reloc >>= 10;
1144
1145     reloc &= 0x3fffff;
1146
1147     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
1148   }
1149
1150
1151   // R_SPARC_TLS_LE_LOX10: (@tpoff(Symbol + Addend) & 0x3ff) | 0x1c00
1152   static inline void
1153   lox10(unsigned char* view,
1154         typename elfcpp::Elf_types<size>::Elf_Addr value,
1155         typename elfcpp::Elf_types<size>::Elf_Addr addend)
1156   {
1157     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
1158     Valtype* wv = reinterpret_cast<Valtype*>(view);
1159     Valtype val = elfcpp::Swap<32, true>::readval(wv);
1160     Valtype reloc = (value + addend);
1161
1162     val &= ~0x1fff;
1163     reloc &= 0x3ff;
1164     reloc |= 0x1c00;
1165
1166     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
1167   }
1168
1169   // R_SPARC_GOTDATA_OP_LOX10: (@gdopoff(Symbol + Addend) & 0x3ff) | 0x1c00
1170   static inline void
1171   gdop_lox10(unsigned char* view,
1172              typename elfcpp::Elf_types<size>::Elf_Addr value,
1173              typename elfcpp::Elf_types<size>::Elf_Addr addend)
1174   {
1175     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
1176     Valtype* wv = reinterpret_cast<Valtype*>(view);
1177     Valtype val = elfcpp::Swap<32, true>::readval(wv);
1178     int32_t reloc = static_cast<int32_t>(value + addend);
1179
1180     if (reloc < 0)
1181       reloc = (reloc & 0x3ff) | 0x1c00;
1182     else
1183       reloc = (reloc & 0x3ff);
1184
1185     val &= ~0x1fff;
1186     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
1187   }
1188
1189   // R_SPARC_LOX10: ((Symbol + Addend) & 0x3ff) | 0x1c00
1190   static inline void
1191   lox10(unsigned char* view,
1192         const Sized_relobj_file<size, big_endian>* object,
1193         const Symbol_value<size>* psymval,
1194         typename elfcpp::Elf_types<size>::Elf_Addr addend)
1195   {
1196     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
1197     Valtype* wv = reinterpret_cast<Valtype*>(view);
1198     Valtype val = elfcpp::Swap<32, true>::readval(wv);
1199     Valtype reloc = psymval->value(object, addend);
1200
1201     val &= ~0x1fff;
1202     reloc &= 0x3ff;
1203     reloc |= 0x1c00;
1204
1205     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
1206   }
1207 };
1208
1209 // Get the GOT section, creating it if necessary.
1210
1211 template<int size, bool big_endian>
1212 Output_data_got<size, big_endian>*
1213 Target_sparc<size, big_endian>::got_section(Symbol_table* symtab,
1214                                             Layout* layout)
1215 {
1216   if (this->got_ == NULL)
1217     {
1218       gold_assert(symtab != NULL && layout != NULL);
1219
1220       this->got_ = new Output_data_got<size, big_endian>();
1221
1222       layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS,
1223                                       (elfcpp::SHF_ALLOC
1224                                        | elfcpp::SHF_WRITE),
1225                                       this->got_, ORDER_RELRO, true);
1226
1227       // Define _GLOBAL_OFFSET_TABLE_ at the start of the .got section.
1228       symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL,
1229                                     Symbol_table::PREDEFINED,
1230                                     this->got_,
1231                                     0, 0, elfcpp::STT_OBJECT,
1232                                     elfcpp::STB_LOCAL,
1233                                     elfcpp::STV_HIDDEN, 0,
1234                                     false, false);
1235     }
1236
1237   return this->got_;
1238 }
1239
1240 // Get the dynamic reloc section, creating it if necessary.
1241
1242 template<int size, bool big_endian>
1243 typename Target_sparc<size, big_endian>::Reloc_section*
1244 Target_sparc<size, big_endian>::rela_dyn_section(Layout* layout)
1245 {
1246   if (this->rela_dyn_ == NULL)
1247     {
1248       gold_assert(layout != NULL);
1249       this->rela_dyn_ = new Reloc_section(parameters->options().combreloc());
1250       layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA,
1251                                       elfcpp::SHF_ALLOC, this->rela_dyn_,
1252                                       ORDER_DYNAMIC_RELOCS, false);
1253     }
1254   return this->rela_dyn_;
1255 }
1256
1257 // Get the section to use for IFUNC relocs, creating it if
1258 // necessary.  These go in .rela.dyn, but only after all other dynamic
1259 // relocations.  They need to follow the other dynamic relocations so
1260 // that they can refer to global variables initialized by those
1261 // relocs.
1262
1263 template<int size, bool big_endian>
1264 typename Target_sparc<size, big_endian>::Reloc_section*
1265 Target_sparc<size, big_endian>::rela_ifunc_section(Layout* layout)
1266 {
1267   if (this->rela_ifunc_ == NULL)
1268     {
1269       // Make sure we have already created the dynamic reloc section.
1270       this->rela_dyn_section(layout);
1271       this->rela_ifunc_ = new Reloc_section(false);
1272       layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA,
1273                                       elfcpp::SHF_ALLOC, this->rela_ifunc_,
1274                                       ORDER_DYNAMIC_RELOCS, false);
1275       gold_assert(this->rela_dyn_->output_section()
1276                   == this->rela_ifunc_->output_section());
1277     }
1278   return this->rela_ifunc_;
1279 }
1280
1281 // A class to handle the PLT data.
1282
1283 template<int size, bool big_endian>
1284 class Output_data_plt_sparc : public Output_section_data
1285 {
1286  public:
1287   typedef Output_data_reloc<elfcpp::SHT_RELA, true,
1288                             size, big_endian> Reloc_section;
1289
1290   Output_data_plt_sparc(Layout*);
1291
1292   // Add an entry to the PLT.
1293   void add_entry(Symbol_table* symtab, Layout* layout, Symbol* gsym);
1294
1295   // Add an entry to the PLT for a local STT_GNU_IFUNC symbol.
1296   unsigned int
1297   add_local_ifunc_entry(Symbol_table*, Layout*,
1298                         Sized_relobj_file<size, big_endian>* relobj,
1299                         unsigned int local_sym_index);
1300
1301   // Return the .rela.plt section data.
1302   const Reloc_section* rel_plt() const
1303   {
1304     return this->rel_;
1305   }
1306
1307   // Return where the IFUNC relocations should go.
1308   Reloc_section*
1309   rela_ifunc(Symbol_table*, Layout*);
1310
1311   void
1312   emit_pending_ifunc_relocs();
1313
1314   // Return whether we created a section for IFUNC relocations.
1315   bool
1316   has_ifunc_section() const
1317   { return this->ifunc_rel_ != NULL; }
1318
1319   // Return the number of PLT entries.
1320   unsigned int
1321   entry_count() const
1322   { return this->count_ + this->ifunc_count_; }
1323
1324   // Return the offset of the first non-reserved PLT entry.
1325   static unsigned int
1326   first_plt_entry_offset()
1327   { return 4 * base_plt_entry_size; }
1328
1329   // Return the size of a PLT entry.
1330   static unsigned int
1331   get_plt_entry_size()
1332   { return base_plt_entry_size; }
1333
1334   // Return the PLT address to use for a global symbol.
1335   uint64_t
1336   address_for_global(const Symbol*);
1337
1338   // Return the PLT address to use for a local symbol.
1339   uint64_t
1340   address_for_local(const Relobj*, unsigned int symndx);
1341
1342  protected:
1343   void do_adjust_output_section(Output_section* os);
1344
1345   // Write to a map file.
1346   void
1347   do_print_to_mapfile(Mapfile* mapfile) const
1348   { mapfile->print_output_data(this, _("** PLT")); }
1349
1350  private:
1351   // The size of an entry in the PLT.
1352   static const int base_plt_entry_size = (size == 32 ? 12 : 32);
1353
1354   static const unsigned int plt_entries_per_block = 160;
1355   static const unsigned int plt_insn_chunk_size = 24;
1356   static const unsigned int plt_pointer_chunk_size = 8;
1357   static const unsigned int plt_block_size =
1358     (plt_entries_per_block
1359      * (plt_insn_chunk_size + plt_pointer_chunk_size));
1360
1361   section_offset_type
1362   plt_index_to_offset(unsigned int index)
1363   {
1364     section_offset_type offset;
1365
1366     if (size == 32 || index < 32768)
1367       offset = index * base_plt_entry_size;
1368     else
1369       {
1370         unsigned int ext_index = index - 32768;
1371
1372         offset = (32768 * base_plt_entry_size)
1373           + ((ext_index / plt_entries_per_block)
1374              * plt_block_size)
1375           + ((ext_index % plt_entries_per_block)
1376              * plt_insn_chunk_size);
1377       }
1378     return offset;
1379   }
1380
1381   // Set the final size.
1382   void
1383   set_final_data_size()
1384   {
1385     unsigned int full_count = this->entry_count() + 4;
1386     unsigned int extra = (size == 32 ? 4 : 0);
1387     section_offset_type sz = plt_index_to_offset(full_count) + extra;
1388
1389     return this->set_data_size(sz);
1390   }
1391
1392   // Write out the PLT data.
1393   void
1394   do_write(Output_file*);
1395
1396   struct Global_ifunc
1397   {
1398     Reloc_section* rel;
1399     Symbol* gsym;
1400     unsigned int plt_index;
1401   };
1402
1403   struct Local_ifunc
1404   {
1405     Reloc_section* rel;
1406     Sized_relobj_file<size, big_endian>* object;
1407     unsigned int local_sym_index;
1408     unsigned int plt_index;
1409   };
1410
1411   // The reloc section.
1412   Reloc_section* rel_;
1413   // The IFUNC relocations, if necessary.  These must follow the
1414   // regular relocations.
1415   Reloc_section* ifunc_rel_;
1416   // The number of PLT entries.
1417   unsigned int count_;
1418   // The number of PLT entries for IFUNC symbols.
1419   unsigned int ifunc_count_;
1420   // Global STT_GNU_IFUNC symbols.
1421   std::vector<Global_ifunc> global_ifuncs_;
1422   // Local STT_GNU_IFUNC symbols.
1423   std::vector<Local_ifunc> local_ifuncs_;
1424 };
1425
1426 // Define the constants as required by C++ standard.
1427
1428 template<int size, bool big_endian>
1429 const int Output_data_plt_sparc<size, big_endian>::base_plt_entry_size;
1430
1431 template<int size, bool big_endian>
1432 const unsigned int
1433 Output_data_plt_sparc<size, big_endian>::plt_entries_per_block;
1434
1435 template<int size, bool big_endian>
1436 const unsigned int Output_data_plt_sparc<size, big_endian>::plt_insn_chunk_size;
1437
1438 template<int size, bool big_endian>
1439 const unsigned int
1440 Output_data_plt_sparc<size, big_endian>::plt_pointer_chunk_size;
1441
1442 template<int size, bool big_endian>
1443 const unsigned int Output_data_plt_sparc<size, big_endian>::plt_block_size;
1444
1445 // Create the PLT section.  The ordinary .got section is an argument,
1446 // since we need to refer to the start.
1447
1448 template<int size, bool big_endian>
1449 Output_data_plt_sparc<size, big_endian>::Output_data_plt_sparc(Layout* layout)
1450   : Output_section_data(size == 32 ? 4 : 8), ifunc_rel_(NULL),
1451     count_(0), ifunc_count_(0), global_ifuncs_(), local_ifuncs_()
1452 {
1453   this->rel_ = new Reloc_section(false);
1454   layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA,
1455                                   elfcpp::SHF_ALLOC, this->rel_,
1456                                   ORDER_DYNAMIC_PLT_RELOCS, false);
1457 }
1458
1459 template<int size, bool big_endian>
1460 void
1461 Output_data_plt_sparc<size, big_endian>::do_adjust_output_section(Output_section* os)
1462 {
1463   os->set_entsize(0);
1464 }
1465
1466 // Add an entry to the PLT.
1467
1468 template<int size, bool big_endian>
1469 void
1470 Output_data_plt_sparc<size, big_endian>::add_entry(Symbol_table* symtab,
1471                                                    Layout* layout,
1472                                                    Symbol* gsym)
1473 {
1474   gold_assert(!gsym->has_plt_offset());
1475
1476   section_offset_type plt_offset;
1477   unsigned int index;
1478
1479   if (gsym->type() == elfcpp::STT_GNU_IFUNC
1480       && gsym->can_use_relative_reloc(false))
1481     {
1482       index = this->ifunc_count_;
1483       plt_offset = plt_index_to_offset(index);
1484       gsym->set_plt_offset(plt_offset);
1485       ++this->ifunc_count_;
1486       Reloc_section* rel = this->rela_ifunc(symtab, layout);
1487
1488       struct Global_ifunc gi;
1489       gi.rel = rel;
1490       gi.gsym = gsym;
1491       gi.plt_index = index;
1492       this->global_ifuncs_.push_back(gi);
1493     }
1494   else
1495     {
1496       plt_offset = plt_index_to_offset(this->count_ + 4);
1497       gsym->set_plt_offset(plt_offset);
1498       ++this->count_;
1499       gsym->set_needs_dynsym_entry();
1500       this->rel_->add_global(gsym, elfcpp::R_SPARC_JMP_SLOT, this,
1501                              plt_offset, 0);
1502     }
1503
1504   // Note that we don't need to save the symbol.  The contents of the
1505   // PLT are independent of which symbols are used.  The symbols only
1506   // appear in the relocations.
1507 }
1508
1509 template<int size, bool big_endian>
1510 unsigned int
1511 Output_data_plt_sparc<size, big_endian>::add_local_ifunc_entry(
1512     Symbol_table* symtab,
1513     Layout* layout,
1514     Sized_relobj_file<size, big_endian>* relobj,
1515     unsigned int local_sym_index)
1516 {
1517   unsigned int index = this->ifunc_count_;
1518   section_offset_type plt_offset;
1519
1520   plt_offset = plt_index_to_offset(index);
1521   ++this->ifunc_count_;
1522
1523   Reloc_section* rel = this->rela_ifunc(symtab, layout);
1524
1525   struct Local_ifunc li;
1526   li.rel = rel;
1527   li.object = relobj;
1528   li.local_sym_index = local_sym_index;
1529   li.plt_index = index;
1530   this->local_ifuncs_.push_back(li);
1531
1532   return plt_offset;
1533 }
1534
1535 // Emit any pending IFUNC plt relocations.
1536
1537 template<int size, bool big_endian>
1538 void
1539 Output_data_plt_sparc<size, big_endian>::emit_pending_ifunc_relocs()
1540 {
1541   // Emit any pending IFUNC relocs.
1542   for (typename std::vector<Global_ifunc>::const_iterator p =
1543          this->global_ifuncs_.begin();
1544        p != this->global_ifuncs_.end();
1545        ++p)
1546     {
1547       section_offset_type plt_offset;
1548       unsigned int index;
1549
1550       index = this->count_ + p->plt_index + 4;
1551       plt_offset = this->plt_index_to_offset(index);
1552       p->rel->add_symbolless_global_addend(p->gsym, elfcpp::R_SPARC_JMP_IREL,
1553                                            this, plt_offset, 0);
1554     }
1555
1556   for (typename std::vector<Local_ifunc>::const_iterator p =
1557          this->local_ifuncs_.begin();
1558        p != this->local_ifuncs_.end();
1559        ++p)
1560     {
1561       section_offset_type plt_offset;
1562       unsigned int index;
1563
1564       index = this->count_ + p->plt_index + 4;
1565       plt_offset = this->plt_index_to_offset(index);
1566       p->rel->add_symbolless_local_addend(p->object, p->local_sym_index,
1567                                           elfcpp::R_SPARC_JMP_IREL,
1568                                           this, plt_offset, 0);
1569     }
1570 }
1571
1572 // Return where the IFUNC relocations should go in the PLT.  These
1573 // follow the non-IFUNC relocations.
1574
1575 template<int size, bool big_endian>
1576 typename Output_data_plt_sparc<size, big_endian>::Reloc_section*
1577 Output_data_plt_sparc<size, big_endian>::rela_ifunc(
1578         Symbol_table* symtab,
1579         Layout* layout)
1580 {
1581   if (this->ifunc_rel_ == NULL)
1582     {
1583       this->ifunc_rel_ = new Reloc_section(false);
1584       layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA,
1585                                       elfcpp::SHF_ALLOC, this->ifunc_rel_,
1586                                       ORDER_DYNAMIC_PLT_RELOCS, false);
1587       gold_assert(this->ifunc_rel_->output_section()
1588                   == this->rel_->output_section());
1589
1590       if (parameters->doing_static_link())
1591         {
1592           // A statically linked executable will only have a .rel.plt
1593           // section to hold R_SPARC_IRELATIVE and R_SPARC_JMP_IREL
1594           // relocs for STT_GNU_IFUNC symbols.  The library will use
1595           // these symbols to locate the IRELATIVE and JMP_IREL relocs
1596           // at program startup time.
1597           symtab->define_in_output_data("__rela_iplt_start", NULL,
1598                                         Symbol_table::PREDEFINED,
1599                                         this->ifunc_rel_, 0, 0,
1600                                         elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL,
1601                                         elfcpp::STV_HIDDEN, 0, false, true);
1602           symtab->define_in_output_data("__rela_iplt_end", NULL,
1603                                         Symbol_table::PREDEFINED,
1604                                         this->ifunc_rel_, 0, 0,
1605                                         elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL,
1606                                         elfcpp::STV_HIDDEN, 0, true, true);
1607         }
1608     }
1609   return this->ifunc_rel_;
1610 }
1611
1612 // Return the PLT address to use for a global symbol.
1613
1614 template<int size, bool big_endian>
1615 uint64_t
1616 Output_data_plt_sparc<size, big_endian>::address_for_global(const Symbol* gsym)
1617 {
1618   uint64_t offset = 0;
1619   if (gsym->type() == elfcpp::STT_GNU_IFUNC
1620       && gsym->can_use_relative_reloc(false))
1621     offset = plt_index_to_offset(this->count_ + 4);
1622   return this->address() + offset + gsym->plt_offset();
1623 }
1624
1625 // Return the PLT address to use for a local symbol.  These are always
1626 // IRELATIVE relocs.
1627
1628 template<int size, bool big_endian>
1629 uint64_t
1630 Output_data_plt_sparc<size, big_endian>::address_for_local(
1631         const Relobj* object,
1632         unsigned int r_sym)
1633 {
1634   return (this->address()
1635           + plt_index_to_offset(this->count_ + 4)
1636           + object->local_plt_offset(r_sym));
1637 }
1638
1639 static const unsigned int sparc_nop = 0x01000000;
1640 static const unsigned int sparc_sethi_g1 = 0x03000000;
1641 static const unsigned int sparc_branch_always = 0x30800000;
1642 static const unsigned int sparc_branch_always_pt = 0x30680000;
1643 static const unsigned int sparc_mov = 0x80100000;
1644 static const unsigned int sparc_mov_g0_o0 = 0x90100000;
1645 static const unsigned int sparc_mov_o7_g5 = 0x8a10000f;
1646 static const unsigned int sparc_call_plus_8 = 0x40000002;
1647 static const unsigned int sparc_ldx_o7_imm_g1 = 0xc25be000;
1648 static const unsigned int sparc_jmpl_o7_g1_g1 = 0x83c3c001;
1649 static const unsigned int sparc_mov_g5_o7 = 0x9e100005;
1650
1651 // Write out the PLT.
1652
1653 template<int size, bool big_endian>
1654 void
1655 Output_data_plt_sparc<size, big_endian>::do_write(Output_file* of)
1656 {
1657   const off_t offset = this->offset();
1658   const section_size_type oview_size =
1659     convert_to_section_size_type(this->data_size());
1660   unsigned char* const oview = of->get_output_view(offset, oview_size);
1661   unsigned char* pov = oview;
1662
1663   memset(pov, 0, base_plt_entry_size * 4);
1664   pov += this->first_plt_entry_offset();
1665
1666   unsigned int plt_offset = base_plt_entry_size * 4;
1667   const unsigned int count = this->entry_count();
1668
1669   if (size == 64)
1670     {
1671       unsigned int limit;
1672
1673       limit = (count > 32768 ? 32768 : count);
1674
1675       for (unsigned int i = 0; i < limit; ++i)
1676         {
1677           elfcpp::Swap<32, true>::writeval(pov + 0x00,
1678                                            sparc_sethi_g1 + plt_offset);
1679           elfcpp::Swap<32, true>::writeval(pov + 0x04,
1680                                            sparc_branch_always_pt +
1681                                            (((base_plt_entry_size -
1682                                               (plt_offset + 4)) >> 2) &
1683                                             0x7ffff));
1684           elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop);
1685           elfcpp::Swap<32, true>::writeval(pov + 0x0c, sparc_nop);
1686           elfcpp::Swap<32, true>::writeval(pov + 0x10, sparc_nop);
1687           elfcpp::Swap<32, true>::writeval(pov + 0x14, sparc_nop);
1688           elfcpp::Swap<32, true>::writeval(pov + 0x18, sparc_nop);
1689           elfcpp::Swap<32, true>::writeval(pov + 0x1c, sparc_nop);
1690
1691           pov += base_plt_entry_size;
1692           plt_offset += base_plt_entry_size;
1693         }
1694
1695       if (count > 32768)
1696         {
1697           unsigned int ext_cnt = count - 32768;
1698           unsigned int blks = ext_cnt / plt_entries_per_block;
1699
1700           for (unsigned int i = 0; i < blks; ++i)
1701             {
1702               unsigned int data_off = (plt_entries_per_block
1703                                        * plt_insn_chunk_size) - 4;
1704
1705               for (unsigned int j = 0; j < plt_entries_per_block; ++j)
1706                 {
1707                   elfcpp::Swap<32, true>::writeval(pov + 0x00,
1708                                                    sparc_mov_o7_g5);
1709                   elfcpp::Swap<32, true>::writeval(pov + 0x04,
1710                                                    sparc_call_plus_8);
1711                   elfcpp::Swap<32, true>::writeval(pov + 0x08,
1712                                                    sparc_nop);
1713                   elfcpp::Swap<32, true>::writeval(pov + 0x0c,
1714                                                    sparc_ldx_o7_imm_g1 +
1715                                                    (data_off & 0x1fff));
1716                   elfcpp::Swap<32, true>::writeval(pov + 0x10,
1717                                                    sparc_jmpl_o7_g1_g1);
1718                   elfcpp::Swap<32, true>::writeval(pov + 0x14,
1719                                                    sparc_mov_g5_o7);
1720
1721                   elfcpp::Swap<64, big_endian>::writeval(
1722                                 pov + 0x4 + data_off,
1723                                 (elfcpp::Elf_Xword) (oview - (pov + 0x04)));
1724
1725                   pov += plt_insn_chunk_size;
1726                   data_off -= 16;
1727                 }
1728             }
1729
1730           unsigned int sub_blk_cnt = ext_cnt % plt_entries_per_block;
1731           for (unsigned int i = 0; i < sub_blk_cnt; ++i)
1732             {
1733               unsigned int data_off = (sub_blk_cnt
1734                                        * plt_insn_chunk_size) - 4;
1735
1736               for (unsigned int j = 0; j < plt_entries_per_block; ++j)
1737                 {
1738                   elfcpp::Swap<32, true>::writeval(pov + 0x00,
1739                                                    sparc_mov_o7_g5);
1740                   elfcpp::Swap<32, true>::writeval(pov + 0x04,
1741                                                    sparc_call_plus_8);
1742                   elfcpp::Swap<32, true>::writeval(pov + 0x08,
1743                                                    sparc_nop);
1744                   elfcpp::Swap<32, true>::writeval(pov + 0x0c,
1745                                                    sparc_ldx_o7_imm_g1 +
1746                                                    (data_off & 0x1fff));
1747                   elfcpp::Swap<32, true>::writeval(pov + 0x10,
1748                                                    sparc_jmpl_o7_g1_g1);
1749                   elfcpp::Swap<32, true>::writeval(pov + 0x14,
1750                                                    sparc_mov_g5_o7);
1751
1752                   elfcpp::Swap<64, big_endian>::writeval(
1753                                 pov + 0x4 + data_off,
1754                                 (elfcpp::Elf_Xword) (oview - (pov + 0x04)));
1755
1756                   pov += plt_insn_chunk_size;
1757                   data_off -= 16;
1758                 }
1759             }
1760         }
1761     }
1762   else
1763     {
1764       for (unsigned int i = 0; i < count; ++i)
1765         {
1766           elfcpp::Swap<32, true>::writeval(pov + 0x00,
1767                                            sparc_sethi_g1 + plt_offset);
1768           elfcpp::Swap<32, true>::writeval(pov + 0x04,
1769                                            sparc_branch_always +
1770                                            (((- (plt_offset + 4)) >> 2) &
1771                                             0x003fffff));
1772           elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop);
1773
1774           pov += base_plt_entry_size;
1775           plt_offset += base_plt_entry_size;
1776         }
1777
1778       elfcpp::Swap<32, true>::writeval(pov, sparc_nop);
1779       pov += 4;
1780     }
1781
1782   gold_assert(static_cast<section_size_type>(pov - oview) == oview_size);
1783
1784   of->write_output_view(offset, oview_size, oview);
1785 }
1786
1787 // Create the PLT section.
1788
1789 template<int size, bool big_endian>
1790 void
1791 Target_sparc<size, big_endian>::make_plt_section(Symbol_table* symtab,
1792                                                  Layout* layout)
1793 {
1794   // Create the GOT sections first.
1795   this->got_section(symtab, layout);
1796
1797   // Ensure that .rela.dyn always appears before .rela.plt  This is
1798   // necessary due to how, on Sparc and some other targets, .rela.dyn
1799   // needs to include .rela.plt in it's range.
1800   this->rela_dyn_section(layout);
1801
1802   this->plt_ = new Output_data_plt_sparc<size, big_endian>(layout);
1803   layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS,
1804                                   (elfcpp::SHF_ALLOC
1805                                    | elfcpp::SHF_EXECINSTR
1806                                    | elfcpp::SHF_WRITE),
1807                                   this->plt_, ORDER_NON_RELRO_FIRST, false);
1808
1809   // Define _PROCEDURE_LINKAGE_TABLE_ at the start of the .plt section.
1810   symtab->define_in_output_data("_PROCEDURE_LINKAGE_TABLE_", NULL,
1811                                 Symbol_table::PREDEFINED,
1812                                 this->plt_,
1813                                 0, 0, elfcpp::STT_OBJECT,
1814                                 elfcpp::STB_LOCAL,
1815                                 elfcpp::STV_HIDDEN, 0,
1816                                 false, false);
1817 }
1818
1819 // Create a PLT entry for a global symbol.
1820
1821 template<int size, bool big_endian>
1822 void
1823 Target_sparc<size, big_endian>::make_plt_entry(Symbol_table* symtab,
1824                                                Layout* layout,
1825                                                Symbol* gsym)
1826 {
1827   if (gsym->has_plt_offset())
1828     return;
1829
1830   if (this->plt_ == NULL)
1831     this->make_plt_section(symtab, layout);
1832
1833   this->plt_->add_entry(symtab, layout, gsym);
1834 }
1835
1836 // Make a PLT entry for a local STT_GNU_IFUNC symbol.
1837
1838 template<int size, bool big_endian>
1839 void
1840 Target_sparc<size, big_endian>::make_local_ifunc_plt_entry(
1841         Symbol_table* symtab,
1842         Layout* layout,
1843         Sized_relobj_file<size, big_endian>* relobj,
1844         unsigned int local_sym_index)
1845 {
1846   if (relobj->local_has_plt_offset(local_sym_index))
1847     return;
1848   if (this->plt_ == NULL)
1849     this->make_plt_section(symtab, layout);
1850   unsigned int plt_offset = this->plt_->add_local_ifunc_entry(symtab, layout,
1851                                                               relobj,
1852                                                               local_sym_index);
1853   relobj->set_local_plt_offset(local_sym_index, plt_offset);
1854 }
1855
1856 // Return the number of entries in the PLT.
1857
1858 template<int size, bool big_endian>
1859 unsigned int
1860 Target_sparc<size, big_endian>::plt_entry_count() const
1861 {
1862   if (this->plt_ == NULL)
1863     return 0;
1864   return this->plt_->entry_count();
1865 }
1866
1867 // Return the offset of the first non-reserved PLT entry.
1868
1869 template<int size, bool big_endian>
1870 unsigned int
1871 Target_sparc<size, big_endian>::first_plt_entry_offset() const
1872 {
1873   return Output_data_plt_sparc<size, big_endian>::first_plt_entry_offset();
1874 }
1875
1876 // Return the size of each PLT entry.
1877
1878 template<int size, bool big_endian>
1879 unsigned int
1880 Target_sparc<size, big_endian>::plt_entry_size() const
1881 {
1882   return Output_data_plt_sparc<size, big_endian>::get_plt_entry_size();
1883 }
1884
1885 // Create a GOT entry for the TLS module index.
1886
1887 template<int size, bool big_endian>
1888 unsigned int
1889 Target_sparc<size, big_endian>::got_mod_index_entry(
1890      Symbol_table* symtab,
1891      Layout* layout,
1892      Sized_relobj_file<size, big_endian>* object)
1893 {
1894   if (this->got_mod_index_offset_ == -1U)
1895     {
1896       gold_assert(symtab != NULL && layout != NULL && object != NULL);
1897       Reloc_section* rela_dyn = this->rela_dyn_section(layout);
1898       Output_data_got<size, big_endian>* got;
1899       unsigned int got_offset;
1900
1901       got = this->got_section(symtab, layout);
1902       got_offset = got->add_constant(0);
1903       rela_dyn->add_local(object, 0,
1904                           (size == 64 ?
1905                            elfcpp::R_SPARC_TLS_DTPMOD64 :
1906                            elfcpp::R_SPARC_TLS_DTPMOD32), got,
1907                           got_offset, 0);
1908       got->add_constant(0);
1909       this->got_mod_index_offset_ = got_offset;
1910     }
1911   return this->got_mod_index_offset_;
1912 }
1913
1914 // Optimize the TLS relocation type based on what we know about the
1915 // symbol.  IS_FINAL is true if the final address of this symbol is
1916 // known at link time.
1917
1918 static tls::Tls_optimization
1919 optimize_tls_reloc(bool is_final, int r_type)
1920 {
1921   // If we are generating a shared library, then we can't do anything
1922   // in the linker.
1923   if (parameters->options().shared())
1924     return tls::TLSOPT_NONE;
1925
1926   switch (r_type)
1927     {
1928     case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1929     case elfcpp::R_SPARC_TLS_GD_LO10:
1930     case elfcpp::R_SPARC_TLS_GD_ADD:
1931     case elfcpp::R_SPARC_TLS_GD_CALL:
1932       // These are General-Dynamic which permits fully general TLS
1933       // access.  Since we know that we are generating an executable,
1934       // we can convert this to Initial-Exec.  If we also know that
1935       // this is a local symbol, we can further switch to Local-Exec.
1936       if (is_final)
1937         return tls::TLSOPT_TO_LE;
1938       return tls::TLSOPT_TO_IE;
1939
1940     case elfcpp::R_SPARC_TLS_LDM_HI22:  // Local-dynamic
1941     case elfcpp::R_SPARC_TLS_LDM_LO10:
1942     case elfcpp::R_SPARC_TLS_LDM_ADD:
1943     case elfcpp::R_SPARC_TLS_LDM_CALL:
1944       // This is Local-Dynamic, which refers to a local symbol in the
1945       // dynamic TLS block.  Since we know that we generating an
1946       // executable, we can switch to Local-Exec.
1947       return tls::TLSOPT_TO_LE;
1948
1949     case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
1950     case elfcpp::R_SPARC_TLS_LDO_LOX10:
1951     case elfcpp::R_SPARC_TLS_LDO_ADD:
1952       // Another type of Local-Dynamic relocation.
1953       return tls::TLSOPT_TO_LE;
1954
1955     case elfcpp::R_SPARC_TLS_IE_HI22:   // Initial-exec
1956     case elfcpp::R_SPARC_TLS_IE_LO10:
1957     case elfcpp::R_SPARC_TLS_IE_LD:
1958     case elfcpp::R_SPARC_TLS_IE_LDX:
1959     case elfcpp::R_SPARC_TLS_IE_ADD:
1960       // These are Initial-Exec relocs which get the thread offset
1961       // from the GOT.  If we know that we are linking against the
1962       // local symbol, we can switch to Local-Exec, which links the
1963       // thread offset into the instruction.
1964       if (is_final)
1965         return tls::TLSOPT_TO_LE;
1966       return tls::TLSOPT_NONE;
1967
1968     case elfcpp::R_SPARC_TLS_LE_HIX22:  // Local-exec
1969     case elfcpp::R_SPARC_TLS_LE_LOX10:
1970       // When we already have Local-Exec, there is nothing further we
1971       // can do.
1972       return tls::TLSOPT_NONE;
1973
1974     default:
1975       gold_unreachable();
1976     }
1977 }
1978
1979 // Get the Reference_flags for a particular relocation.
1980
1981 template<int size, bool big_endian>
1982 int
1983 Target_sparc<size, big_endian>::Scan::get_reference_flags(unsigned int r_type)
1984 {
1985   r_type &= 0xff;
1986   switch (r_type)
1987     {
1988     case elfcpp::R_SPARC_NONE:
1989     case elfcpp::R_SPARC_REGISTER:
1990     case elfcpp::R_SPARC_GNU_VTINHERIT:
1991     case elfcpp::R_SPARC_GNU_VTENTRY:
1992       // No symbol reference.
1993       return 0;
1994
1995     case elfcpp::R_SPARC_UA64:
1996     case elfcpp::R_SPARC_64:
1997     case elfcpp::R_SPARC_HIX22:
1998     case elfcpp::R_SPARC_LOX10:
1999     case elfcpp::R_SPARC_H34:
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       return Symbol::ABSOLUTE_REF;
2020
2021     case elfcpp::R_SPARC_DISP8:
2022     case elfcpp::R_SPARC_DISP16:
2023     case elfcpp::R_SPARC_DISP32:
2024     case elfcpp::R_SPARC_DISP64:
2025     case elfcpp::R_SPARC_PC_HH22:
2026     case elfcpp::R_SPARC_PC_HM10:
2027     case elfcpp::R_SPARC_PC_LM22:
2028     case elfcpp::R_SPARC_PC10:
2029     case elfcpp::R_SPARC_PC22:
2030     case elfcpp::R_SPARC_WDISP30:
2031     case elfcpp::R_SPARC_WDISP22:
2032     case elfcpp::R_SPARC_WDISP19:
2033     case elfcpp::R_SPARC_WDISP16:
2034     case elfcpp::R_SPARC_WDISP10:
2035       return Symbol::RELATIVE_REF;
2036
2037     case elfcpp::R_SPARC_PLT64:
2038     case elfcpp::R_SPARC_PLT32:
2039     case elfcpp::R_SPARC_HIPLT22:
2040     case elfcpp::R_SPARC_LOPLT10:
2041     case elfcpp::R_SPARC_PCPLT10:
2042       return Symbol::FUNCTION_CALL | Symbol::ABSOLUTE_REF;
2043
2044     case elfcpp::R_SPARC_PCPLT32:
2045     case elfcpp::R_SPARC_PCPLT22:
2046     case elfcpp::R_SPARC_WPLT30:
2047       return Symbol::FUNCTION_CALL | Symbol::RELATIVE_REF;
2048
2049     case elfcpp::R_SPARC_GOTDATA_OP:
2050     case elfcpp::R_SPARC_GOTDATA_OP_HIX22:
2051     case elfcpp::R_SPARC_GOTDATA_OP_LOX10:
2052     case elfcpp::R_SPARC_GOT10:
2053     case elfcpp::R_SPARC_GOT13:
2054     case elfcpp::R_SPARC_GOT22:
2055       // Absolute in GOT.
2056       return Symbol::ABSOLUTE_REF;
2057
2058     case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2059     case elfcpp::R_SPARC_TLS_GD_LO10:
2060     case elfcpp::R_SPARC_TLS_GD_ADD:
2061     case elfcpp::R_SPARC_TLS_GD_CALL:
2062     case elfcpp::R_SPARC_TLS_LDM_HI22:  // Local-dynamic
2063     case elfcpp::R_SPARC_TLS_LDM_LO10:
2064     case elfcpp::R_SPARC_TLS_LDM_ADD:
2065     case elfcpp::R_SPARC_TLS_LDM_CALL:
2066     case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
2067     case elfcpp::R_SPARC_TLS_LDO_LOX10:
2068     case elfcpp::R_SPARC_TLS_LDO_ADD:
2069     case elfcpp::R_SPARC_TLS_LE_HIX22:
2070     case elfcpp::R_SPARC_TLS_LE_LOX10:
2071     case elfcpp::R_SPARC_TLS_IE_HI22:   // Initial-exec
2072     case elfcpp::R_SPARC_TLS_IE_LO10:
2073     case elfcpp::R_SPARC_TLS_IE_LD:
2074     case elfcpp::R_SPARC_TLS_IE_LDX:
2075     case elfcpp::R_SPARC_TLS_IE_ADD:
2076       return Symbol::TLS_REF;
2077
2078     case elfcpp::R_SPARC_COPY:
2079     case elfcpp::R_SPARC_GLOB_DAT:
2080     case elfcpp::R_SPARC_JMP_SLOT:
2081     case elfcpp::R_SPARC_JMP_IREL:
2082     case elfcpp::R_SPARC_RELATIVE:
2083     case elfcpp::R_SPARC_IRELATIVE:
2084     case elfcpp::R_SPARC_TLS_DTPMOD64:
2085     case elfcpp::R_SPARC_TLS_DTPMOD32:
2086     case elfcpp::R_SPARC_TLS_DTPOFF64:
2087     case elfcpp::R_SPARC_TLS_DTPOFF32:
2088     case elfcpp::R_SPARC_TLS_TPOFF64:
2089     case elfcpp::R_SPARC_TLS_TPOFF32:
2090     default:
2091       // Not expected.  We will give an error later.
2092       return 0;
2093     }
2094 }
2095
2096 // Generate a PLT entry slot for a call to __tls_get_addr
2097 template<int size, bool big_endian>
2098 void
2099 Target_sparc<size, big_endian>::Scan::generate_tls_call(Symbol_table* symtab,
2100                                                         Layout* layout,
2101                                                         Target_sparc<size, big_endian>* target)
2102 {
2103   Symbol* gsym = target->tls_get_addr_sym(symtab);
2104
2105   target->make_plt_entry(symtab, layout, gsym);
2106 }
2107
2108 // Report an unsupported relocation against a local symbol.
2109
2110 template<int size, bool big_endian>
2111 void
2112 Target_sparc<size, big_endian>::Scan::unsupported_reloc_local(
2113                         Sized_relobj_file<size, big_endian>* object,
2114                         unsigned int r_type)
2115 {
2116   gold_error(_("%s: unsupported reloc %u against local symbol"),
2117              object->name().c_str(), r_type);
2118 }
2119
2120 // We are about to emit a dynamic relocation of type R_TYPE.  If the
2121 // dynamic linker does not support it, issue an error.
2122
2123 template<int size, bool big_endian>
2124 void
2125 Target_sparc<size, big_endian>::Scan::check_non_pic(Relobj* object, unsigned int r_type)
2126 {
2127   gold_assert(r_type != elfcpp::R_SPARC_NONE);
2128
2129   if (size == 64)
2130     {
2131       switch (r_type)
2132         {
2133           // These are the relocation types supported by glibc for sparc 64-bit.
2134         case elfcpp::R_SPARC_RELATIVE:
2135         case elfcpp::R_SPARC_IRELATIVE:
2136         case elfcpp::R_SPARC_COPY:
2137         case elfcpp::R_SPARC_64:
2138         case elfcpp::R_SPARC_GLOB_DAT:
2139         case elfcpp::R_SPARC_JMP_SLOT:
2140         case elfcpp::R_SPARC_JMP_IREL:
2141         case elfcpp::R_SPARC_TLS_DTPMOD64:
2142         case elfcpp::R_SPARC_TLS_DTPOFF64:
2143         case elfcpp::R_SPARC_TLS_TPOFF64:
2144         case elfcpp::R_SPARC_TLS_LE_HIX22:
2145         case elfcpp::R_SPARC_TLS_LE_LOX10:
2146         case elfcpp::R_SPARC_8:
2147         case elfcpp::R_SPARC_16:
2148         case elfcpp::R_SPARC_DISP8:
2149         case elfcpp::R_SPARC_DISP16:
2150         case elfcpp::R_SPARC_DISP32:
2151         case elfcpp::R_SPARC_WDISP30:
2152         case elfcpp::R_SPARC_LO10:
2153         case elfcpp::R_SPARC_HI22:
2154         case elfcpp::R_SPARC_OLO10:
2155         case elfcpp::R_SPARC_H34:
2156         case elfcpp::R_SPARC_H44:
2157         case elfcpp::R_SPARC_M44:
2158         case elfcpp::R_SPARC_L44:
2159         case elfcpp::R_SPARC_HH22:
2160         case elfcpp::R_SPARC_HM10:
2161         case elfcpp::R_SPARC_LM22:
2162         case elfcpp::R_SPARC_UA16:
2163         case elfcpp::R_SPARC_UA32:
2164         case elfcpp::R_SPARC_UA64:
2165           return;
2166
2167         default:
2168           break;
2169         }
2170     }
2171   else
2172     {
2173       switch (r_type)
2174         {
2175           // These are the relocation types supported by glibc for sparc 32-bit.
2176         case elfcpp::R_SPARC_RELATIVE:
2177         case elfcpp::R_SPARC_IRELATIVE:
2178         case elfcpp::R_SPARC_COPY:
2179         case elfcpp::R_SPARC_GLOB_DAT:
2180         case elfcpp::R_SPARC_32:
2181         case elfcpp::R_SPARC_JMP_SLOT:
2182         case elfcpp::R_SPARC_JMP_IREL:
2183         case elfcpp::R_SPARC_TLS_DTPMOD32:
2184         case elfcpp::R_SPARC_TLS_DTPOFF32:
2185         case elfcpp::R_SPARC_TLS_TPOFF32:
2186         case elfcpp::R_SPARC_TLS_LE_HIX22:
2187         case elfcpp::R_SPARC_TLS_LE_LOX10:
2188         case elfcpp::R_SPARC_8:
2189         case elfcpp::R_SPARC_16:
2190         case elfcpp::R_SPARC_DISP8:
2191         case elfcpp::R_SPARC_DISP16:
2192         case elfcpp::R_SPARC_DISP32:
2193         case elfcpp::R_SPARC_LO10:
2194         case elfcpp::R_SPARC_WDISP30:
2195         case elfcpp::R_SPARC_HI22:
2196         case elfcpp::R_SPARC_UA16:
2197         case elfcpp::R_SPARC_UA32:
2198           return;
2199
2200         default:
2201           break;
2202         }
2203     }
2204
2205   // This prevents us from issuing more than one error per reloc
2206   // section.  But we can still wind up issuing more than one
2207   // error per object file.
2208   if (this->issued_non_pic_error_)
2209     return;
2210   gold_assert(parameters->options().output_is_position_independent());
2211   object->error(_("requires unsupported dynamic reloc; "
2212                   "recompile with -fPIC"));
2213   this->issued_non_pic_error_ = true;
2214   return;
2215 }
2216
2217 // Return whether we need to make a PLT entry for a relocation of the
2218 // given type against a STT_GNU_IFUNC symbol.
2219
2220 template<int size, bool big_endian>
2221 bool
2222 Target_sparc<size, big_endian>::Scan::reloc_needs_plt_for_ifunc(
2223      Sized_relobj_file<size, big_endian>* object,
2224      unsigned int r_type)
2225 {
2226   int flags = Scan::get_reference_flags(r_type);
2227   if (flags & Symbol::TLS_REF)
2228     gold_error(_("%s: unsupported TLS reloc %u for IFUNC symbol"),
2229                object->name().c_str(), r_type);
2230   return flags != 0;
2231 }
2232
2233 // Scan a relocation for a local symbol.
2234
2235 template<int size, bool big_endian>
2236 inline void
2237 Target_sparc<size, big_endian>::Scan::local(
2238                         Symbol_table* symtab,
2239                         Layout* layout,
2240                         Target_sparc<size, big_endian>* target,
2241                         Sized_relobj_file<size, big_endian>* object,
2242                         unsigned int data_shndx,
2243                         Output_section* output_section,
2244                         const elfcpp::Rela<size, big_endian>& reloc,
2245                         unsigned int r_type,
2246                         const elfcpp::Sym<size, big_endian>& lsym,
2247                         bool is_discarded)
2248 {
2249   if (is_discarded)
2250     return;
2251
2252   bool is_ifunc = lsym.get_st_type() == elfcpp::STT_GNU_IFUNC;
2253   unsigned int orig_r_type = r_type;
2254   r_type &= 0xff;
2255
2256   if (is_ifunc
2257       && this->reloc_needs_plt_for_ifunc(object, r_type))
2258     {
2259       unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
2260       target->make_local_ifunc_plt_entry(symtab, layout, object, r_sym);
2261     }
2262
2263   switch (r_type)
2264     {
2265     case elfcpp::R_SPARC_NONE:
2266     case elfcpp::R_SPARC_REGISTER:
2267     case elfcpp::R_SPARC_GNU_VTINHERIT:
2268     case elfcpp::R_SPARC_GNU_VTENTRY:
2269       break;
2270
2271     case elfcpp::R_SPARC_64:
2272     case elfcpp::R_SPARC_32:
2273       // If building a shared library (or a position-independent
2274       // executable), we need to create a dynamic relocation for
2275       // this location. The relocation applied at link time will
2276       // apply the link-time value, so we flag the location with
2277       // an R_SPARC_RELATIVE relocation so the dynamic loader can
2278       // relocate it easily.
2279       if (parameters->options().output_is_position_independent())
2280         {
2281           Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2282           unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
2283           rela_dyn->add_local_relative(object, r_sym, elfcpp::R_SPARC_RELATIVE,
2284                                        output_section, data_shndx,
2285                                        reloc.get_r_offset(),
2286                                        reloc.get_r_addend(), is_ifunc);
2287         }
2288       break;
2289
2290     case elfcpp::R_SPARC_HIX22:
2291     case elfcpp::R_SPARC_LOX10:
2292     case elfcpp::R_SPARC_H34:
2293     case elfcpp::R_SPARC_H44:
2294     case elfcpp::R_SPARC_M44:
2295     case elfcpp::R_SPARC_L44:
2296     case elfcpp::R_SPARC_HH22:
2297     case elfcpp::R_SPARC_HM10:
2298     case elfcpp::R_SPARC_LM22:
2299     case elfcpp::R_SPARC_UA64:
2300     case elfcpp::R_SPARC_UA32:
2301     case elfcpp::R_SPARC_UA16:
2302     case elfcpp::R_SPARC_HI22:
2303     case elfcpp::R_SPARC_LO10:
2304     case elfcpp::R_SPARC_OLO10:
2305     case elfcpp::R_SPARC_16:
2306     case elfcpp::R_SPARC_11:
2307     case elfcpp::R_SPARC_10:
2308     case elfcpp::R_SPARC_8:
2309     case elfcpp::R_SPARC_7:
2310     case elfcpp::R_SPARC_6:
2311     case elfcpp::R_SPARC_5:
2312       // If building a shared library (or a position-independent
2313       // executable), we need to create a dynamic relocation for
2314       // this location.
2315       if (parameters->options().output_is_position_independent())
2316         {
2317           Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2318           unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
2319
2320           check_non_pic(object, r_type);
2321           if (lsym.get_st_type() != elfcpp::STT_SECTION)
2322             {
2323               rela_dyn->add_local(object, r_sym, orig_r_type, output_section,
2324                                   data_shndx, reloc.get_r_offset(),
2325                                   reloc.get_r_addend());
2326             }
2327           else
2328             {
2329               gold_assert(lsym.get_st_value() == 0);
2330               rela_dyn->add_symbolless_local_addend(object, r_sym, orig_r_type,
2331                                                     output_section, data_shndx,
2332                                                     reloc.get_r_offset(),
2333                                                     reloc.get_r_addend());
2334             }
2335         }
2336       break;
2337
2338     case elfcpp::R_SPARC_WDISP30:
2339     case elfcpp::R_SPARC_WPLT30:
2340     case elfcpp::R_SPARC_WDISP22:
2341     case elfcpp::R_SPARC_WDISP19:
2342     case elfcpp::R_SPARC_WDISP16:
2343     case elfcpp::R_SPARC_WDISP10:
2344     case elfcpp::R_SPARC_DISP8:
2345     case elfcpp::R_SPARC_DISP16:
2346     case elfcpp::R_SPARC_DISP32:
2347     case elfcpp::R_SPARC_DISP64:
2348     case elfcpp::R_SPARC_PC10:
2349     case elfcpp::R_SPARC_PC22:
2350       break;
2351
2352     case elfcpp::R_SPARC_GOTDATA_OP:
2353     case elfcpp::R_SPARC_GOTDATA_OP_HIX22:
2354     case elfcpp::R_SPARC_GOTDATA_OP_LOX10:
2355       // We will optimize this into a GOT relative relocation
2356       // and code transform the GOT load into an addition.
2357       break;
2358
2359     case elfcpp::R_SPARC_GOT10:
2360     case elfcpp::R_SPARC_GOT13:
2361     case elfcpp::R_SPARC_GOT22:
2362       {
2363         // The symbol requires a GOT entry.
2364         Output_data_got<size, big_endian>* got;
2365         unsigned int r_sym;
2366
2367         got = target->got_section(symtab, layout);
2368         r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
2369
2370         // If we are generating a shared object, we need to add a
2371         // dynamic relocation for this symbol's GOT entry.
2372         if (parameters->options().output_is_position_independent())
2373           {
2374             if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD))
2375               {
2376                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2377                 unsigned int off = got->add_constant(0);
2378                 object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off);
2379                 rela_dyn->add_local_relative(object, r_sym,
2380                                              elfcpp::R_SPARC_RELATIVE,
2381                                              got, off, 0, is_ifunc);
2382               }
2383           }
2384         else
2385           got->add_local(object, r_sym, GOT_TYPE_STANDARD);
2386       }
2387       break;
2388
2389       // These are initial TLS relocs, which are expected when
2390       // linking.
2391     case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2392     case elfcpp::R_SPARC_TLS_GD_LO10:
2393     case elfcpp::R_SPARC_TLS_GD_ADD:
2394     case elfcpp::R_SPARC_TLS_GD_CALL:
2395     case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic
2396     case elfcpp::R_SPARC_TLS_LDM_LO10:
2397     case elfcpp::R_SPARC_TLS_LDM_ADD:
2398     case elfcpp::R_SPARC_TLS_LDM_CALL:
2399     case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
2400     case elfcpp::R_SPARC_TLS_LDO_LOX10:
2401     case elfcpp::R_SPARC_TLS_LDO_ADD:
2402     case elfcpp::R_SPARC_TLS_IE_HI22:   // Initial-exec
2403     case elfcpp::R_SPARC_TLS_IE_LO10:
2404     case elfcpp::R_SPARC_TLS_IE_LD:
2405     case elfcpp::R_SPARC_TLS_IE_LDX:
2406     case elfcpp::R_SPARC_TLS_IE_ADD:
2407     case elfcpp::R_SPARC_TLS_LE_HIX22:  // Local-exec
2408     case elfcpp::R_SPARC_TLS_LE_LOX10:
2409       {
2410         bool output_is_shared = parameters->options().shared();
2411         const tls::Tls_optimization optimized_type
2412             = optimize_tls_reloc(!output_is_shared, r_type);
2413         switch (r_type)
2414           {
2415           case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2416           case elfcpp::R_SPARC_TLS_GD_LO10:
2417           case elfcpp::R_SPARC_TLS_GD_ADD:
2418           case elfcpp::R_SPARC_TLS_GD_CALL:
2419             if (optimized_type == tls::TLSOPT_NONE)
2420               {
2421                 // Create a pair of GOT entries for the module index and
2422                 // dtv-relative offset.
2423                 Output_data_got<size, big_endian>* got
2424                     = target->got_section(symtab, layout);
2425                 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
2426                 unsigned int shndx = lsym.get_st_shndx();
2427                 bool is_ordinary;
2428                 shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary);
2429                 if (!is_ordinary)
2430                   object->error(_("local symbol %u has bad shndx %u"),
2431                                 r_sym, shndx);
2432                 else
2433                   got->add_local_pair_with_rel(object, r_sym,
2434                                                lsym.get_st_shndx(),
2435                                                GOT_TYPE_TLS_PAIR,
2436                                                target->rela_dyn_section(layout),
2437                                                (size == 64
2438                                                 ? elfcpp::R_SPARC_TLS_DTPMOD64
2439                                                 : elfcpp::R_SPARC_TLS_DTPMOD32));
2440                 if (r_type == elfcpp::R_SPARC_TLS_GD_CALL)
2441                   generate_tls_call(symtab, layout, target);
2442               }
2443             else if (optimized_type != tls::TLSOPT_TO_LE)
2444               unsupported_reloc_local(object, r_type);
2445             break;
2446
2447           case elfcpp::R_SPARC_TLS_LDM_HI22 :   // Local-dynamic
2448           case elfcpp::R_SPARC_TLS_LDM_LO10:
2449           case elfcpp::R_SPARC_TLS_LDM_ADD:
2450           case elfcpp::R_SPARC_TLS_LDM_CALL:
2451             if (optimized_type == tls::TLSOPT_NONE)
2452               {
2453                 // Create a GOT entry for the module index.
2454                 target->got_mod_index_entry(symtab, layout, object);
2455
2456                 if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL)
2457                   generate_tls_call(symtab, layout, target);
2458               }
2459             else if (optimized_type != tls::TLSOPT_TO_LE)
2460               unsupported_reloc_local(object, r_type);
2461             break;
2462
2463           case elfcpp::R_SPARC_TLS_LDO_HIX22:   // Alternate local-dynamic
2464           case elfcpp::R_SPARC_TLS_LDO_LOX10:
2465           case elfcpp::R_SPARC_TLS_LDO_ADD:
2466             break;
2467
2468           case elfcpp::R_SPARC_TLS_IE_HI22:     // Initial-exec
2469           case elfcpp::R_SPARC_TLS_IE_LO10:
2470           case elfcpp::R_SPARC_TLS_IE_LD:
2471           case elfcpp::R_SPARC_TLS_IE_LDX:
2472           case elfcpp::R_SPARC_TLS_IE_ADD:
2473             layout->set_has_static_tls();
2474             if (optimized_type == tls::TLSOPT_NONE)
2475               {
2476                 // Create a GOT entry for the tp-relative offset.
2477                 Output_data_got<size, big_endian>* got
2478                   = target->got_section(symtab, layout);
2479                 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
2480
2481                 if (!object->local_has_got_offset(r_sym, GOT_TYPE_TLS_OFFSET))
2482                   {
2483                     Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2484                     unsigned int off = got->add_constant(0);
2485
2486                     object->set_local_got_offset(r_sym, GOT_TYPE_TLS_OFFSET, off);
2487
2488                     rela_dyn->add_symbolless_local_addend(object, r_sym,
2489                                                           (size == 64 ?
2490                                                            elfcpp::R_SPARC_TLS_TPOFF64 :
2491                                                            elfcpp::R_SPARC_TLS_TPOFF32),
2492                                                           got, off, 0);
2493                   }
2494               }
2495             else if (optimized_type != tls::TLSOPT_TO_LE)
2496               unsupported_reloc_local(object, r_type);
2497             break;
2498
2499           case elfcpp::R_SPARC_TLS_LE_HIX22:    // Local-exec
2500           case elfcpp::R_SPARC_TLS_LE_LOX10:
2501             layout->set_has_static_tls();
2502             if (output_is_shared)
2503               {
2504                 // We need to create a dynamic relocation.
2505                 gold_assert(lsym.get_st_type() != elfcpp::STT_SECTION);
2506                 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
2507                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2508                 rela_dyn->add_symbolless_local_addend(object, r_sym, r_type,
2509                                                       output_section, data_shndx,
2510                                                       reloc.get_r_offset(), 0);
2511               }
2512             break;
2513           }
2514       }
2515       break;
2516
2517       // These are relocations which should only be seen by the
2518       // dynamic linker, and should never be seen here.
2519     case elfcpp::R_SPARC_COPY:
2520     case elfcpp::R_SPARC_GLOB_DAT:
2521     case elfcpp::R_SPARC_JMP_SLOT:
2522     case elfcpp::R_SPARC_JMP_IREL:
2523     case elfcpp::R_SPARC_RELATIVE:
2524     case elfcpp::R_SPARC_IRELATIVE:
2525     case elfcpp::R_SPARC_TLS_DTPMOD64:
2526     case elfcpp::R_SPARC_TLS_DTPMOD32:
2527     case elfcpp::R_SPARC_TLS_DTPOFF64:
2528     case elfcpp::R_SPARC_TLS_DTPOFF32:
2529     case elfcpp::R_SPARC_TLS_TPOFF64:
2530     case elfcpp::R_SPARC_TLS_TPOFF32:
2531       gold_error(_("%s: unexpected reloc %u in object file"),
2532                  object->name().c_str(), r_type);
2533       break;
2534
2535     default:
2536       unsupported_reloc_local(object, r_type);
2537       break;
2538     }
2539 }
2540
2541 // Report an unsupported relocation against a global symbol.
2542
2543 template<int size, bool big_endian>
2544 void
2545 Target_sparc<size, big_endian>::Scan::unsupported_reloc_global(
2546                         Sized_relobj_file<size, big_endian>* object,
2547                         unsigned int r_type,
2548                         Symbol* gsym)
2549 {
2550   gold_error(_("%s: unsupported reloc %u against global symbol %s"),
2551              object->name().c_str(), r_type, gsym->demangled_name().c_str());
2552 }
2553
2554 // Scan a relocation for a global symbol.
2555
2556 template<int size, bool big_endian>
2557 inline void
2558 Target_sparc<size, big_endian>::Scan::global(
2559                                 Symbol_table* symtab,
2560                                 Layout* layout,
2561                                 Target_sparc<size, big_endian>* target,
2562                                 Sized_relobj_file<size, big_endian>* object,
2563                                 unsigned int data_shndx,
2564                                 Output_section* output_section,
2565                                 const elfcpp::Rela<size, big_endian>& reloc,
2566                                 unsigned int r_type,
2567                                 Symbol* gsym)
2568 {
2569   unsigned int orig_r_type = r_type;
2570   bool is_ifunc = gsym->type() == elfcpp::STT_GNU_IFUNC;
2571
2572   // A reference to _GLOBAL_OFFSET_TABLE_ implies that we need a got
2573   // section.  We check here to avoid creating a dynamic reloc against
2574   // _GLOBAL_OFFSET_TABLE_.
2575   if (!target->has_got_section()
2576       && strcmp(gsym->name(), "_GLOBAL_OFFSET_TABLE_") == 0)
2577     target->got_section(symtab, layout);
2578
2579   r_type &= 0xff;
2580
2581   // A STT_GNU_IFUNC symbol may require a PLT entry.
2582   if (is_ifunc
2583       && this->reloc_needs_plt_for_ifunc(object, r_type))
2584     target->make_plt_entry(symtab, layout, gsym);
2585
2586   switch (r_type)
2587     {
2588     case elfcpp::R_SPARC_NONE:
2589     case elfcpp::R_SPARC_REGISTER:
2590     case elfcpp::R_SPARC_GNU_VTINHERIT:
2591     case elfcpp::R_SPARC_GNU_VTENTRY:
2592       break;
2593
2594     case elfcpp::R_SPARC_PLT64:
2595     case elfcpp::R_SPARC_PLT32:
2596     case elfcpp::R_SPARC_HIPLT22:
2597     case elfcpp::R_SPARC_LOPLT10:
2598     case elfcpp::R_SPARC_PCPLT32:
2599     case elfcpp::R_SPARC_PCPLT22:
2600     case elfcpp::R_SPARC_PCPLT10:
2601     case elfcpp::R_SPARC_WPLT30:
2602       // If the symbol is fully resolved, this is just a PC32 reloc.
2603       // Otherwise we need a PLT entry.
2604       if (gsym->final_value_is_known())
2605         break;
2606       // If building a shared library, we can also skip the PLT entry
2607       // if the symbol is defined in the output file and is protected
2608       // or hidden.
2609       if (gsym->is_defined()
2610           && !gsym->is_from_dynobj()
2611           && !gsym->is_preemptible())
2612         break;
2613       target->make_plt_entry(symtab, layout, gsym);
2614       break;
2615
2616     case elfcpp::R_SPARC_DISP8:
2617     case elfcpp::R_SPARC_DISP16:
2618     case elfcpp::R_SPARC_DISP32:
2619     case elfcpp::R_SPARC_DISP64:
2620     case elfcpp::R_SPARC_PC_HH22:
2621     case elfcpp::R_SPARC_PC_HM10:
2622     case elfcpp::R_SPARC_PC_LM22:
2623     case elfcpp::R_SPARC_PC10:
2624     case elfcpp::R_SPARC_PC22:
2625     case elfcpp::R_SPARC_WDISP30:
2626     case elfcpp::R_SPARC_WDISP22:
2627     case elfcpp::R_SPARC_WDISP19:
2628     case elfcpp::R_SPARC_WDISP16:
2629     case elfcpp::R_SPARC_WDISP10:
2630       {
2631         if (gsym->needs_plt_entry())
2632           target->make_plt_entry(symtab, layout, gsym);
2633         // Make a dynamic relocation if necessary.
2634         if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type)))
2635           {
2636             if (gsym->may_need_copy_reloc())
2637               {
2638                 target->copy_reloc(symtab, layout, object,
2639                                    data_shndx, output_section, gsym,
2640                                    reloc);
2641               }
2642             else
2643               {
2644                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2645                 check_non_pic(object, r_type);
2646                 rela_dyn->add_global(gsym, orig_r_type, output_section, object,
2647                                      data_shndx, reloc.get_r_offset(),
2648                                      reloc.get_r_addend());
2649               }
2650           }
2651       }
2652       break;
2653
2654     case elfcpp::R_SPARC_UA64:
2655     case elfcpp::R_SPARC_64:
2656     case elfcpp::R_SPARC_HIX22:
2657     case elfcpp::R_SPARC_LOX10:
2658     case elfcpp::R_SPARC_H34:
2659     case elfcpp::R_SPARC_H44:
2660     case elfcpp::R_SPARC_M44:
2661     case elfcpp::R_SPARC_L44:
2662     case elfcpp::R_SPARC_HH22:
2663     case elfcpp::R_SPARC_HM10:
2664     case elfcpp::R_SPARC_LM22:
2665     case elfcpp::R_SPARC_HI22:
2666     case elfcpp::R_SPARC_LO10:
2667     case elfcpp::R_SPARC_OLO10:
2668     case elfcpp::R_SPARC_UA32:
2669     case elfcpp::R_SPARC_32:
2670     case elfcpp::R_SPARC_UA16:
2671     case elfcpp::R_SPARC_16:
2672     case elfcpp::R_SPARC_11:
2673     case elfcpp::R_SPARC_10:
2674     case elfcpp::R_SPARC_8:
2675     case elfcpp::R_SPARC_7:
2676     case elfcpp::R_SPARC_6:
2677     case elfcpp::R_SPARC_5:
2678       {
2679         // Make a PLT entry if necessary.
2680         if (gsym->needs_plt_entry())
2681           {
2682             target->make_plt_entry(symtab, layout, gsym);
2683             // Since this is not a PC-relative relocation, we may be
2684             // taking the address of a function. In that case we need to
2685             // set the entry in the dynamic symbol table to the address of
2686             // the PLT entry.
2687             if (gsym->is_from_dynobj() && !parameters->options().shared())
2688               gsym->set_needs_dynsym_value();
2689           }
2690         // Make a dynamic relocation if necessary.
2691         if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type)))
2692           {
2693             unsigned int r_off = reloc.get_r_offset();
2694
2695             // The assembler can sometimes emit unaligned relocations
2696             // for dwarf2 cfi directives.
2697             switch (r_type)
2698               {
2699               case elfcpp::R_SPARC_16:
2700                 if (r_off & 0x1)
2701                   orig_r_type = r_type = elfcpp::R_SPARC_UA16;
2702                 break;
2703               case elfcpp::R_SPARC_32:
2704                 if (r_off & 0x3)
2705                   orig_r_type = r_type = elfcpp::R_SPARC_UA32;
2706                 break;
2707               case elfcpp::R_SPARC_64:
2708                 if (r_off & 0x7)
2709                   orig_r_type = r_type = elfcpp::R_SPARC_UA64;
2710                 break;
2711               case elfcpp::R_SPARC_UA16:
2712                 if (!(r_off & 0x1))
2713                   orig_r_type = r_type = elfcpp::R_SPARC_16;
2714                 break;
2715               case elfcpp::R_SPARC_UA32:
2716                 if (!(r_off & 0x3))
2717                   orig_r_type = r_type = elfcpp::R_SPARC_32;
2718                 break;
2719               case elfcpp::R_SPARC_UA64:
2720                 if (!(r_off & 0x7))
2721                   orig_r_type = r_type = elfcpp::R_SPARC_64;
2722                 break;
2723               }
2724
2725             if (gsym->may_need_copy_reloc())
2726               {
2727                 target->copy_reloc(symtab, layout, object,
2728                                    data_shndx, output_section, gsym, reloc);
2729               }
2730             else if (((size == 64 && r_type == elfcpp::R_SPARC_64)
2731                       || (size == 32 && r_type == elfcpp::R_SPARC_32))
2732                      && gsym->type() == elfcpp::STT_GNU_IFUNC
2733                      && gsym->can_use_relative_reloc(false)
2734                      && !gsym->is_from_dynobj()
2735                      && !gsym->is_undefined()
2736                      && !gsym->is_preemptible())
2737               {
2738                 // Use an IRELATIVE reloc for a locally defined
2739                 // STT_GNU_IFUNC symbol.  This makes a function
2740                 // address in a PIE executable match the address in a
2741                 // shared library that it links against.
2742                 Reloc_section* rela_dyn =
2743                   target->rela_ifunc_section(layout);
2744                 unsigned int r_type = elfcpp::R_SPARC_IRELATIVE;
2745                 rela_dyn->add_symbolless_global_addend(gsym, r_type,
2746                                                        output_section, object,
2747                                                        data_shndx,
2748                                                        reloc.get_r_offset(),
2749                                                        reloc.get_r_addend());
2750               }
2751             else if ((r_type == elfcpp::R_SPARC_32
2752                       || r_type == elfcpp::R_SPARC_64)
2753                      && gsym->can_use_relative_reloc(false))
2754               {
2755                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2756                 rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE,
2757                                               output_section, object,
2758                                               data_shndx, reloc.get_r_offset(),
2759                                               reloc.get_r_addend(), is_ifunc);
2760               }
2761             else
2762               {
2763                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2764
2765                 check_non_pic(object, r_type);
2766                 if (gsym->is_from_dynobj()
2767                     || gsym->is_undefined()
2768                     || gsym->is_preemptible())
2769                   rela_dyn->add_global(gsym, orig_r_type, output_section,
2770                                        object, data_shndx,
2771                                        reloc.get_r_offset(),
2772                                        reloc.get_r_addend());
2773                 else
2774                   rela_dyn->add_symbolless_global_addend(gsym, orig_r_type,
2775                                                          output_section,
2776                                                          object, data_shndx,
2777                                                          reloc.get_r_offset(),
2778                                                          reloc.get_r_addend());
2779               }
2780           }
2781       }
2782       break;
2783
2784     case elfcpp::R_SPARC_GOTDATA_OP:
2785     case elfcpp::R_SPARC_GOTDATA_OP_HIX22:
2786     case elfcpp::R_SPARC_GOTDATA_OP_LOX10:
2787       if (gsym->is_defined()
2788           && !gsym->is_from_dynobj()
2789           && !gsym->is_preemptible()
2790           && !is_ifunc)
2791         {
2792           // We will optimize this into a GOT relative relocation
2793           // and code transform the GOT load into an addition.
2794           break;
2795         }
2796     case elfcpp::R_SPARC_GOT10:
2797     case elfcpp::R_SPARC_GOT13:
2798     case elfcpp::R_SPARC_GOT22:
2799       {
2800         // The symbol requires a GOT entry.
2801         Output_data_got<size, big_endian>* got;
2802
2803         got = target->got_section(symtab, layout);
2804         if (gsym->final_value_is_known())
2805           {
2806             // For a STT_GNU_IFUNC symbol we want the PLT address.
2807             if (gsym->type() == elfcpp::STT_GNU_IFUNC)
2808               got->add_global_plt(gsym, GOT_TYPE_STANDARD);
2809             else
2810               got->add_global(gsym, GOT_TYPE_STANDARD);
2811           }
2812         else
2813           {
2814             // If this symbol is not fully resolved, we need to add a
2815             // GOT entry with a dynamic relocation.
2816             bool is_ifunc = gsym->type() == elfcpp::STT_GNU_IFUNC;
2817
2818             // Use a GLOB_DAT rather than a RELATIVE reloc if:
2819             //
2820             // 1) The symbol may be defined in some other module.
2821             //
2822             // 2) We are building a shared library and this is a
2823             // protected symbol; using GLOB_DAT means that the dynamic
2824             // linker can use the address of the PLT in the main
2825             // executable when appropriate so that function address
2826             // comparisons work.
2827             //
2828             // 3) This is a STT_GNU_IFUNC symbol in position dependent
2829             // code, again so that function address comparisons work.
2830             Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2831             if (gsym->is_from_dynobj()
2832                 || gsym->is_undefined()
2833                 || gsym->is_preemptible()
2834                 || (gsym->visibility() == elfcpp::STV_PROTECTED
2835                     && parameters->options().shared())
2836                 || (gsym->type() == elfcpp::STT_GNU_IFUNC
2837                     && parameters->options().output_is_position_independent()
2838                     && !gsym->is_forced_local()))
2839               {
2840                 unsigned int r_type = elfcpp::R_SPARC_GLOB_DAT;
2841
2842                 // If this symbol is forced local, this relocation will
2843                 // not work properly.  That's because ld.so on sparc
2844                 // (and 32-bit powerpc) expects st_value in the r_addend
2845                 // of relocations for STB_LOCAL symbols.  Curiously the
2846                 // BFD linker does not promote global hidden symbols to be
2847                 // STB_LOCAL in the dynamic symbol table like Gold does.
2848                 gold_assert(!gsym->is_forced_local());
2849                 got->add_global_with_rel(gsym, GOT_TYPE_STANDARD, rela_dyn,
2850                                          r_type);
2851               }
2852             else if (!gsym->has_got_offset(GOT_TYPE_STANDARD))
2853               {
2854                 unsigned int off = got->add_constant(0);
2855
2856                 gsym->set_got_offset(GOT_TYPE_STANDARD, off);
2857                 if (is_ifunc)
2858                   {
2859                     // Tell the dynamic linker to use the PLT address
2860                     // when resolving relocations.
2861                     if (gsym->is_from_dynobj()
2862                         && !parameters->options().shared())
2863                       gsym->set_needs_dynsym_value();
2864                   }
2865                 rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE,
2866                                               got, off, 0, is_ifunc);
2867               }
2868           }
2869       }
2870       break;
2871
2872       // These are initial tls relocs, which are expected when
2873       // linking.
2874     case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2875     case elfcpp::R_SPARC_TLS_GD_LO10:
2876     case elfcpp::R_SPARC_TLS_GD_ADD:
2877     case elfcpp::R_SPARC_TLS_GD_CALL:
2878     case elfcpp::R_SPARC_TLS_LDM_HI22:  // Local-dynamic
2879     case elfcpp::R_SPARC_TLS_LDM_LO10:
2880     case elfcpp::R_SPARC_TLS_LDM_ADD:
2881     case elfcpp::R_SPARC_TLS_LDM_CALL:
2882     case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
2883     case elfcpp::R_SPARC_TLS_LDO_LOX10:
2884     case elfcpp::R_SPARC_TLS_LDO_ADD:
2885     case elfcpp::R_SPARC_TLS_LE_HIX22:
2886     case elfcpp::R_SPARC_TLS_LE_LOX10:
2887     case elfcpp::R_SPARC_TLS_IE_HI22:   // Initial-exec
2888     case elfcpp::R_SPARC_TLS_IE_LO10:
2889     case elfcpp::R_SPARC_TLS_IE_LD:
2890     case elfcpp::R_SPARC_TLS_IE_LDX:
2891     case elfcpp::R_SPARC_TLS_IE_ADD:
2892       {
2893         const bool is_final = gsym->final_value_is_known();
2894         const tls::Tls_optimization optimized_type
2895             = optimize_tls_reloc(is_final, r_type);
2896         switch (r_type)
2897           {
2898           case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2899           case elfcpp::R_SPARC_TLS_GD_LO10:
2900           case elfcpp::R_SPARC_TLS_GD_ADD:
2901           case elfcpp::R_SPARC_TLS_GD_CALL:
2902             if (optimized_type == tls::TLSOPT_NONE)
2903               {
2904                 // Create a pair of GOT entries for the module index and
2905                 // dtv-relative offset.
2906                 Output_data_got<size, big_endian>* got
2907                     = target->got_section(symtab, layout);
2908                 got->add_global_pair_with_rel(gsym, GOT_TYPE_TLS_PAIR,
2909                                               target->rela_dyn_section(layout),
2910                                               (size == 64
2911                                                ? elfcpp::R_SPARC_TLS_DTPMOD64
2912                                                : elfcpp::R_SPARC_TLS_DTPMOD32),
2913                                               (size == 64
2914                                                ? elfcpp::R_SPARC_TLS_DTPOFF64
2915                                                : elfcpp::R_SPARC_TLS_DTPOFF32));
2916
2917                 // Emit R_SPARC_WPLT30 against "__tls_get_addr"
2918                 if (r_type == elfcpp::R_SPARC_TLS_GD_CALL)
2919                   generate_tls_call(symtab, layout, target);
2920               }
2921             else if (optimized_type == tls::TLSOPT_TO_IE)
2922               {
2923                 // Create a GOT entry for the tp-relative offset.
2924                 Output_data_got<size, big_endian>* got
2925                     = target->got_section(symtab, layout);
2926                 got->add_global_with_rel(gsym, GOT_TYPE_TLS_OFFSET,
2927                                          target->rela_dyn_section(layout),
2928                                          (size == 64 ?
2929                                           elfcpp::R_SPARC_TLS_TPOFF64 :
2930                                           elfcpp::R_SPARC_TLS_TPOFF32));
2931               }
2932             else if (optimized_type != tls::TLSOPT_TO_LE)
2933               unsupported_reloc_global(object, r_type, gsym);
2934             break;
2935
2936           case elfcpp::R_SPARC_TLS_LDM_HI22:    // Local-dynamic
2937           case elfcpp::R_SPARC_TLS_LDM_LO10:
2938           case elfcpp::R_SPARC_TLS_LDM_ADD:
2939           case elfcpp::R_SPARC_TLS_LDM_CALL:
2940             if (optimized_type == tls::TLSOPT_NONE)
2941               {
2942                 // Create a GOT entry for the module index.
2943                 target->got_mod_index_entry(symtab, layout, object);
2944
2945                 if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL)
2946                   generate_tls_call(symtab, layout, target);
2947               }
2948             else if (optimized_type != tls::TLSOPT_TO_LE)
2949               unsupported_reloc_global(object, r_type, gsym);
2950             break;
2951
2952           case elfcpp::R_SPARC_TLS_LDO_HIX22:   // Alternate local-dynamic
2953           case elfcpp::R_SPARC_TLS_LDO_LOX10:
2954           case elfcpp::R_SPARC_TLS_LDO_ADD:
2955             break;
2956
2957           case elfcpp::R_SPARC_TLS_LE_HIX22:
2958           case elfcpp::R_SPARC_TLS_LE_LOX10:
2959             layout->set_has_static_tls();
2960             if (parameters->options().shared())
2961               {
2962                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2963                 rela_dyn->add_symbolless_global_addend(gsym, orig_r_type,
2964                                                        output_section, object,
2965                                                        data_shndx, reloc.get_r_offset(),
2966                                                        0);
2967               }
2968             break;
2969
2970           case elfcpp::R_SPARC_TLS_IE_HI22:     // Initial-exec
2971           case elfcpp::R_SPARC_TLS_IE_LO10:
2972           case elfcpp::R_SPARC_TLS_IE_LD:
2973           case elfcpp::R_SPARC_TLS_IE_LDX:
2974           case elfcpp::R_SPARC_TLS_IE_ADD:
2975             layout->set_has_static_tls();
2976             if (optimized_type == tls::TLSOPT_NONE)
2977               {
2978                 // Create a GOT entry for the tp-relative offset.
2979                 Output_data_got<size, big_endian>* got
2980                   = target->got_section(symtab, layout);
2981                 got->add_global_with_rel(gsym, GOT_TYPE_TLS_OFFSET,
2982                                          target->rela_dyn_section(layout),
2983                                          (size == 64
2984                                           ? elfcpp::R_SPARC_TLS_TPOFF64
2985                                           : elfcpp::R_SPARC_TLS_TPOFF32));
2986               }
2987             else if (optimized_type != tls::TLSOPT_TO_LE)
2988               unsupported_reloc_global(object, r_type, gsym);
2989             break;
2990           }
2991       }
2992       break;
2993
2994       // These are relocations which should only be seen by the
2995       // dynamic linker, and should never be seen here.
2996     case elfcpp::R_SPARC_COPY:
2997     case elfcpp::R_SPARC_GLOB_DAT:
2998     case elfcpp::R_SPARC_JMP_SLOT:
2999     case elfcpp::R_SPARC_JMP_IREL:
3000     case elfcpp::R_SPARC_RELATIVE:
3001     case elfcpp::R_SPARC_IRELATIVE:
3002     case elfcpp::R_SPARC_TLS_DTPMOD64:
3003     case elfcpp::R_SPARC_TLS_DTPMOD32:
3004     case elfcpp::R_SPARC_TLS_DTPOFF64:
3005     case elfcpp::R_SPARC_TLS_DTPOFF32:
3006     case elfcpp::R_SPARC_TLS_TPOFF64:
3007     case elfcpp::R_SPARC_TLS_TPOFF32:
3008       gold_error(_("%s: unexpected reloc %u in object file"),
3009                  object->name().c_str(), r_type);
3010       break;
3011
3012     default:
3013       unsupported_reloc_global(object, r_type, gsym);
3014       break;
3015     }
3016 }
3017
3018 // Process relocations for gc.
3019
3020 template<int size, bool big_endian>
3021 void
3022 Target_sparc<size, big_endian>::gc_process_relocs(
3023                         Symbol_table* symtab,
3024                         Layout* layout,
3025                         Sized_relobj_file<size, big_endian>* object,
3026                         unsigned int data_shndx,
3027                         unsigned int,
3028                         const unsigned char* prelocs,
3029                         size_t reloc_count,
3030                         Output_section* output_section,
3031                         bool needs_special_offset_handling,
3032                         size_t local_symbol_count,
3033                         const unsigned char* plocal_symbols)
3034 {
3035   typedef Target_sparc<size, big_endian> Sparc;
3036   typedef typename Target_sparc<size, big_endian>::Scan Scan;
3037
3038   gold::gc_process_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan,
3039                           typename Target_sparc::Relocatable_size_for_reloc>(
3040     symtab,
3041     layout,
3042     this,
3043     object,
3044     data_shndx,
3045     prelocs,
3046     reloc_count,
3047     output_section,
3048     needs_special_offset_handling,
3049     local_symbol_count,
3050     plocal_symbols);
3051 }
3052
3053 // Scan relocations for a section.
3054
3055 template<int size, bool big_endian>
3056 void
3057 Target_sparc<size, big_endian>::scan_relocs(
3058                         Symbol_table* symtab,
3059                         Layout* layout,
3060                         Sized_relobj_file<size, big_endian>* object,
3061                         unsigned int data_shndx,
3062                         unsigned int sh_type,
3063                         const unsigned char* prelocs,
3064                         size_t reloc_count,
3065                         Output_section* output_section,
3066                         bool needs_special_offset_handling,
3067                         size_t local_symbol_count,
3068                         const unsigned char* plocal_symbols)
3069 {
3070   typedef Target_sparc<size, big_endian> Sparc;
3071   typedef typename Target_sparc<size, big_endian>::Scan Scan;
3072
3073   if (sh_type == elfcpp::SHT_REL)
3074     {
3075       gold_error(_("%s: unsupported REL reloc section"),
3076                  object->name().c_str());
3077       return;
3078     }
3079
3080   gold::scan_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>(
3081     symtab,
3082     layout,
3083     this,
3084     object,
3085     data_shndx,
3086     prelocs,
3087     reloc_count,
3088     output_section,
3089     needs_special_offset_handling,
3090     local_symbol_count,
3091     plocal_symbols);
3092 }
3093
3094 // Finalize the sections.
3095
3096 template<int size, bool big_endian>
3097 void
3098 Target_sparc<size, big_endian>::do_finalize_sections(
3099     Layout* layout,
3100     const Input_objects*,
3101     Symbol_table* symtab)
3102 {
3103   if (this->plt_)
3104     this->plt_->emit_pending_ifunc_relocs();
3105
3106   // Fill in some more dynamic tags.
3107   const Reloc_section* rel_plt = (this->plt_ == NULL
3108                                   ? NULL
3109                                   : this->plt_->rel_plt());
3110   layout->add_target_dynamic_tags(false, this->plt_, rel_plt,
3111                                   this->rela_dyn_, true, true);
3112
3113   // Emit any relocs we saved in an attempt to avoid generating COPY
3114   // relocs.
3115   if (this->copy_relocs_.any_saved_relocs())
3116     this->copy_relocs_.emit(this->rela_dyn_section(layout));
3117
3118   if (parameters->doing_static_link()
3119       && (this->plt_ == NULL || !this->plt_->has_ifunc_section()))
3120     {
3121       // If linking statically, make sure that the __rela_iplt symbols
3122       // were defined if necessary, even if we didn't create a PLT.
3123       static const Define_symbol_in_segment syms[] =
3124         {
3125           {
3126             "__rela_iplt_start",        // name
3127             elfcpp::PT_LOAD,            // segment_type
3128             elfcpp::PF_W,               // segment_flags_set
3129             elfcpp::PF(0),              // segment_flags_clear
3130             0,                          // value
3131             0,                          // size
3132             elfcpp::STT_NOTYPE,         // type
3133             elfcpp::STB_GLOBAL,         // binding
3134             elfcpp::STV_HIDDEN,         // visibility
3135             0,                          // nonvis
3136             Symbol::SEGMENT_START,      // offset_from_base
3137             true                        // only_if_ref
3138           },
3139           {
3140             "__rela_iplt_end",          // name
3141             elfcpp::PT_LOAD,            // segment_type
3142             elfcpp::PF_W,               // segment_flags_set
3143             elfcpp::PF(0),              // segment_flags_clear
3144             0,                          // value
3145             0,                          // size
3146             elfcpp::STT_NOTYPE,         // type
3147             elfcpp::STB_GLOBAL,         // binding
3148             elfcpp::STV_HIDDEN,         // visibility
3149             0,                          // nonvis
3150             Symbol::SEGMENT_START,      // offset_from_base
3151             true                        // only_if_ref
3152           }
3153         };
3154
3155       symtab->define_symbols(layout, 2, syms,
3156                              layout->script_options()->saw_sections_clause());
3157     }
3158 }
3159
3160 // Perform a relocation.
3161
3162 template<int size, bool big_endian>
3163 inline bool
3164 Target_sparc<size, big_endian>::Relocate::relocate(
3165                         const Relocate_info<size, big_endian>* relinfo,
3166                         Target_sparc* target,
3167                         Output_section*,
3168                         size_t relnum,
3169                         const elfcpp::Rela<size, big_endian>& rela,
3170                         unsigned int r_type,
3171                         const Sized_symbol<size>* gsym,
3172                         const Symbol_value<size>* psymval,
3173                         unsigned char* view,
3174                         typename elfcpp::Elf_types<size>::Elf_Addr address,
3175                         section_size_type view_size)
3176 {
3177   bool orig_is_ifunc = psymval->is_ifunc_symbol();
3178   r_type &= 0xff;
3179
3180   if (this->ignore_gd_add_)
3181     {
3182       if (r_type != elfcpp::R_SPARC_TLS_GD_ADD)
3183         gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
3184                                _("missing expected TLS relocation"));
3185       else
3186         {
3187           this->ignore_gd_add_ = false;
3188           return false;
3189         }
3190     }
3191   if (this->reloc_adjust_addr_ == view)
3192     view -= 4;
3193
3194   typedef Sparc_relocate_functions<size, big_endian> Reloc;
3195   const Sized_relobj_file<size, big_endian>* object = relinfo->object;
3196
3197   // Pick the value to use for symbols defined in shared objects.
3198   Symbol_value<size> symval;
3199   if (gsym != NULL
3200       && gsym->use_plt_offset(Scan::get_reference_flags(r_type)))
3201     {
3202       elfcpp::Elf_Xword value;
3203
3204       value = target->plt_address_for_global(gsym);
3205
3206       symval.set_output_value(value);
3207
3208       psymval = &symval;
3209     }
3210   else if (gsym == NULL && orig_is_ifunc)
3211     {
3212       unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
3213       if (object->local_has_plt_offset(r_sym))
3214         {
3215           symval.set_output_value(target->plt_address_for_local(object, r_sym));
3216           psymval = &symval;
3217         }
3218     }
3219
3220   const elfcpp::Elf_Xword addend = rela.get_r_addend();
3221
3222   // Get the GOT offset if needed.  Unlike i386 and x86_64, our GOT
3223   // pointer points to the beginning, not the end, of the table.
3224   // So we just use the plain offset.
3225   unsigned int got_offset = 0;
3226   bool gdop_valid = false;
3227   switch (r_type)
3228     {
3229     case elfcpp::R_SPARC_GOTDATA_OP:
3230     case elfcpp::R_SPARC_GOTDATA_OP_HIX22:
3231     case elfcpp::R_SPARC_GOTDATA_OP_LOX10:
3232       // If this is local, we did not create a GOT entry because we
3233       // intend to transform this into a GOT relative relocation.
3234       if (gsym == NULL
3235           || (gsym->is_defined()
3236               && !gsym->is_from_dynobj()
3237               && !gsym->is_preemptible()
3238               && !orig_is_ifunc))
3239         {
3240           got_offset = psymval->value(object, 0) - target->got_address();
3241           gdop_valid = true;
3242           break;
3243         }
3244     case elfcpp::R_SPARC_GOT10:
3245     case elfcpp::R_SPARC_GOT13:
3246     case elfcpp::R_SPARC_GOT22:
3247       if (gsym != NULL)
3248         {
3249           gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD));
3250           got_offset = gsym->got_offset(GOT_TYPE_STANDARD);
3251         }
3252       else
3253         {
3254           unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
3255           gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD));
3256           got_offset = object->local_got_offset(r_sym, GOT_TYPE_STANDARD);
3257         }
3258       break;
3259
3260     default:
3261       break;
3262     }
3263
3264   switch (r_type)
3265     {
3266     case elfcpp::R_SPARC_NONE:
3267     case elfcpp::R_SPARC_REGISTER:
3268     case elfcpp::R_SPARC_GNU_VTINHERIT:
3269     case elfcpp::R_SPARC_GNU_VTENTRY:
3270       break;
3271
3272     case elfcpp::R_SPARC_8:
3273       Relocate_functions<size, big_endian>::rela8(view, object,
3274                                                   psymval, addend);
3275       break;
3276
3277     case elfcpp::R_SPARC_16:
3278       if (rela.get_r_offset() & 0x1)
3279         {
3280           // The assembler can sometimes emit unaligned relocations
3281           // for dwarf2 cfi directives.
3282           Reloc::ua16(view, object, psymval, addend);
3283         }
3284       else
3285         Relocate_functions<size, big_endian>::rela16(view, object,
3286                                                      psymval, addend);
3287       break;
3288
3289     case elfcpp::R_SPARC_32:
3290       if (!parameters->options().output_is_position_independent())
3291         {
3292           if (rela.get_r_offset() & 0x3)
3293             {
3294               // The assembler can sometimes emit unaligned relocations
3295               // for dwarf2 cfi directives.
3296               Reloc::ua32(view, object, psymval, addend);
3297             }
3298           else
3299             Relocate_functions<size, big_endian>::rela32(view, object,
3300                                                          psymval, addend);
3301         }
3302       break;
3303
3304     case elfcpp::R_SPARC_DISP8:
3305       Reloc::disp8(view, object, psymval, addend, address);
3306       break;
3307
3308     case elfcpp::R_SPARC_DISP16:
3309       Reloc::disp16(view, object, psymval, addend, address);
3310       break;
3311
3312     case elfcpp::R_SPARC_DISP32:
3313       Reloc::disp32(view, object, psymval, addend, address);
3314       break;
3315
3316     case elfcpp::R_SPARC_DISP64:
3317       Reloc::disp64(view, object, psymval, addend, address);
3318       break;
3319
3320     case elfcpp::R_SPARC_WDISP30:
3321     case elfcpp::R_SPARC_WPLT30:
3322       Reloc::wdisp30(view, object, psymval, addend, address);
3323       if (target->may_relax())
3324         relax_call(target, view, rela, view_size);
3325       break;
3326
3327     case elfcpp::R_SPARC_WDISP22:
3328       Reloc::wdisp22(view, object, psymval, addend, address);
3329       break;
3330
3331     case elfcpp::R_SPARC_WDISP19:
3332       Reloc::wdisp19(view, object, psymval, addend, address);
3333       break;
3334
3335     case elfcpp::R_SPARC_WDISP16:
3336       Reloc::wdisp16(view, object, psymval, addend, address);
3337       break;
3338
3339     case elfcpp::R_SPARC_WDISP10:
3340       Reloc::wdisp10(view, object, psymval, addend, address);
3341       break;
3342
3343     case elfcpp::R_SPARC_HI22:
3344       Reloc::hi22(view, object, psymval, addend);
3345       break;
3346
3347     case elfcpp::R_SPARC_22:
3348       Reloc::rela32_22(view, object, psymval, addend);
3349       break;
3350
3351     case elfcpp::R_SPARC_13:
3352       Reloc::rela32_13(view, object, psymval, addend);
3353       break;
3354
3355     case elfcpp::R_SPARC_LO10:
3356       Reloc::lo10(view, object, psymval, addend);
3357       break;
3358
3359     case elfcpp::R_SPARC_GOT10:
3360       Reloc::lo10(view, got_offset, addend);
3361       break;
3362
3363     case elfcpp::R_SPARC_GOTDATA_OP:
3364       if (gdop_valid)
3365         {
3366           typedef typename elfcpp::Swap<32, true>::Valtype Insntype;
3367           Insntype* wv = reinterpret_cast<Insntype*>(view);
3368           Insntype val;
3369
3370           // {ld,ldx} [%rs1 + %rs2], %rd --> add %rs1, %rs2, %rd
3371           val = elfcpp::Swap<32, true>::readval(wv);
3372           val = 0x80000000 | (val & 0x3e07c01f);
3373           elfcpp::Swap<32, true>::writeval(wv, val);
3374         }
3375       break;
3376
3377     case elfcpp::R_SPARC_GOTDATA_OP_LOX10:
3378       if (gdop_valid)
3379         {
3380           Reloc::gdop_lox10(view, got_offset, addend);
3381           break;
3382         }
3383       /* Fall through.  */
3384     case elfcpp::R_SPARC_GOT13:
3385       Reloc::rela32_13(view, got_offset, addend);
3386       break;
3387
3388     case elfcpp::R_SPARC_GOTDATA_OP_HIX22:
3389       if (gdop_valid)
3390         {
3391           Reloc::gdop_hix22(view, got_offset, addend);
3392           break;
3393         }
3394       /* Fall through.  */
3395     case elfcpp::R_SPARC_GOT22:
3396       Reloc::hi22(view, got_offset, addend);
3397       break;
3398
3399     case elfcpp::R_SPARC_PC10:
3400       Reloc::pc10(view, object, psymval, addend, address);
3401       break;
3402
3403     case elfcpp::R_SPARC_PC22:
3404       Reloc::pc22(view, object, psymval, addend, address);
3405       break;
3406
3407     case elfcpp::R_SPARC_TLS_DTPOFF32:
3408     case elfcpp::R_SPARC_UA32:
3409       Reloc::ua32(view, object, psymval, addend);
3410       break;
3411
3412     case elfcpp::R_SPARC_PLT64:
3413       Relocate_functions<size, big_endian>::rela64(view, object,
3414                                                    psymval, addend);
3415       break;
3416
3417     case elfcpp::R_SPARC_PLT32:
3418       Relocate_functions<size, big_endian>::rela32(view, object,
3419                                                    psymval, addend);
3420       break;
3421
3422     case elfcpp::R_SPARC_HIPLT22:
3423       Reloc::hi22(view, object, psymval, addend);
3424       break;
3425
3426     case elfcpp::R_SPARC_LOPLT10:
3427       Reloc::lo10(view, object, psymval, addend);
3428       break;
3429
3430     case elfcpp::R_SPARC_PCPLT32:
3431       Reloc::disp32(view, object, psymval, addend, address);
3432       break;
3433
3434     case elfcpp::R_SPARC_PCPLT22:
3435       Reloc::pcplt22(view, object, psymval, addend, address);
3436       break;
3437
3438     case elfcpp::R_SPARC_PCPLT10:
3439       Reloc::lo10(view, object, psymval, addend, address);
3440       break;
3441
3442     case elfcpp::R_SPARC_64:
3443       if (!parameters->options().output_is_position_independent())
3444         {
3445           if (rela.get_r_offset() & 0x7)
3446             {
3447               // The assembler can sometimes emit unaligned relocations
3448               // for dwarf2 cfi directives.
3449               Reloc::ua64(view, object, psymval, addend);
3450             }
3451           else
3452             Relocate_functions<size, big_endian>::rela64(view, object,
3453                                                          psymval, addend);
3454         }
3455       break;
3456
3457     case elfcpp::R_SPARC_OLO10:
3458       {
3459         unsigned int addend2 = rela.get_r_info() & 0xffffffff;
3460         addend2 = ((addend2 >> 8) ^ 0x800000) - 0x800000;
3461         Reloc::olo10(view, object, psymval, addend, addend2);
3462       }
3463       break;
3464
3465     case elfcpp::R_SPARC_HH22:
3466       Reloc::hh22(view, object, psymval, addend);
3467       break;
3468
3469     case elfcpp::R_SPARC_PC_HH22:
3470       Reloc::pc_hh22(view, object, psymval, addend, address);
3471       break;
3472
3473     case elfcpp::R_SPARC_HM10:
3474       Reloc::hm10(view, object, psymval, addend);
3475       break;
3476
3477     case elfcpp::R_SPARC_PC_HM10:
3478       Reloc::pc_hm10(view, object, psymval, addend, address);
3479       break;
3480
3481     case elfcpp::R_SPARC_LM22:
3482       Reloc::hi22(view, object, psymval, addend);
3483       break;
3484
3485     case elfcpp::R_SPARC_PC_LM22:
3486       Reloc::pcplt22(view, object, psymval, addend, address);
3487       break;
3488
3489     case elfcpp::R_SPARC_11:
3490       Reloc::rela32_11(view, object, psymval, addend);
3491       break;
3492
3493     case elfcpp::R_SPARC_10:
3494       Reloc::rela32_10(view, object, psymval, addend);
3495       break;
3496
3497     case elfcpp::R_SPARC_7:
3498       Reloc::rela32_7(view, object, psymval, addend);
3499       break;
3500
3501     case elfcpp::R_SPARC_6:
3502       Reloc::rela32_6(view, object, psymval, addend);
3503       break;
3504
3505     case elfcpp::R_SPARC_5:
3506       Reloc::rela32_5(view, object, psymval, addend);
3507       break;
3508
3509     case elfcpp::R_SPARC_HIX22:
3510       Reloc::hix22(view, object, psymval, addend);
3511       break;
3512
3513     case elfcpp::R_SPARC_LOX10:
3514       Reloc::lox10(view, object, psymval, addend);
3515       break;
3516
3517     case elfcpp::R_SPARC_H34:
3518       Reloc::h34(view, object, psymval, addend);
3519       break;
3520
3521     case elfcpp::R_SPARC_H44:
3522       Reloc::h44(view, object, psymval, addend);
3523       break;
3524
3525     case elfcpp::R_SPARC_M44:
3526       Reloc::m44(view, object, psymval, addend);
3527       break;
3528
3529     case elfcpp::R_SPARC_L44:
3530       Reloc::l44(view, object, psymval, addend);
3531       break;
3532
3533     case elfcpp::R_SPARC_TLS_DTPOFF64:
3534     case elfcpp::R_SPARC_UA64:
3535       Reloc::ua64(view, object, psymval, addend);
3536       break;
3537
3538     case elfcpp::R_SPARC_UA16:
3539       Reloc::ua16(view, object, psymval, addend);
3540       break;
3541
3542     case elfcpp::R_SPARC_TLS_GD_HI22:
3543     case elfcpp::R_SPARC_TLS_GD_LO10:
3544     case elfcpp::R_SPARC_TLS_GD_ADD:
3545     case elfcpp::R_SPARC_TLS_GD_CALL:
3546     case elfcpp::R_SPARC_TLS_LDM_HI22:
3547     case elfcpp::R_SPARC_TLS_LDM_LO10:
3548     case elfcpp::R_SPARC_TLS_LDM_ADD:
3549     case elfcpp::R_SPARC_TLS_LDM_CALL:
3550     case elfcpp::R_SPARC_TLS_LDO_HIX22:
3551     case elfcpp::R_SPARC_TLS_LDO_LOX10:
3552     case elfcpp::R_SPARC_TLS_LDO_ADD:
3553     case elfcpp::R_SPARC_TLS_IE_HI22:
3554     case elfcpp::R_SPARC_TLS_IE_LO10:
3555     case elfcpp::R_SPARC_TLS_IE_LD:
3556     case elfcpp::R_SPARC_TLS_IE_LDX:
3557     case elfcpp::R_SPARC_TLS_IE_ADD:
3558     case elfcpp::R_SPARC_TLS_LE_HIX22:
3559     case elfcpp::R_SPARC_TLS_LE_LOX10:
3560       this->relocate_tls(relinfo, target, relnum, rela,
3561                          r_type, gsym, psymval, view,
3562                          address, view_size);
3563       break;
3564
3565     case elfcpp::R_SPARC_COPY:
3566     case elfcpp::R_SPARC_GLOB_DAT:
3567     case elfcpp::R_SPARC_JMP_SLOT:
3568     case elfcpp::R_SPARC_JMP_IREL:
3569     case elfcpp::R_SPARC_RELATIVE:
3570     case elfcpp::R_SPARC_IRELATIVE:
3571       // These are outstanding tls relocs, which are unexpected when
3572       // linking.
3573     case elfcpp::R_SPARC_TLS_DTPMOD64:
3574     case elfcpp::R_SPARC_TLS_DTPMOD32:
3575     case elfcpp::R_SPARC_TLS_TPOFF64:
3576     case elfcpp::R_SPARC_TLS_TPOFF32:
3577       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
3578                              _("unexpected reloc %u in object file"),
3579                              r_type);
3580       break;
3581
3582     default:
3583       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
3584                              _("unsupported reloc %u"),
3585                              r_type);
3586       break;
3587     }
3588
3589   return true;
3590 }
3591
3592 // Perform a TLS relocation.
3593
3594 template<int size, bool big_endian>
3595 inline void
3596 Target_sparc<size, big_endian>::Relocate::relocate_tls(
3597                         const Relocate_info<size, big_endian>* relinfo,
3598                         Target_sparc<size, big_endian>* target,
3599                         size_t relnum,
3600                         const elfcpp::Rela<size, big_endian>& rela,
3601                         unsigned int r_type,
3602                         const Sized_symbol<size>* gsym,
3603                         const Symbol_value<size>* psymval,
3604                         unsigned char* view,
3605                         typename elfcpp::Elf_types<size>::Elf_Addr address,
3606                         section_size_type)
3607 {
3608   Output_segment* tls_segment = relinfo->layout->tls_segment();
3609   typedef Sparc_relocate_functions<size, big_endian> Reloc;
3610   const Sized_relobj_file<size, big_endian>* object = relinfo->object;
3611   typedef typename elfcpp::Swap<32, true>::Valtype Insntype;
3612
3613   const elfcpp::Elf_Xword addend = rela.get_r_addend();
3614   typename elfcpp::Elf_types<size>::Elf_Addr value = psymval->value(object, 0);
3615
3616   const bool is_final =
3617     (gsym == NULL
3618      ? !parameters->options().output_is_position_independent()
3619      : gsym->final_value_is_known());
3620   const tls::Tls_optimization optimized_type
3621       = optimize_tls_reloc(is_final, r_type);
3622
3623   switch (r_type)
3624     {
3625     case elfcpp::R_SPARC_TLS_GD_HI22:
3626     case elfcpp::R_SPARC_TLS_GD_LO10:
3627     case elfcpp::R_SPARC_TLS_GD_ADD:
3628     case elfcpp::R_SPARC_TLS_GD_CALL:
3629       if (optimized_type == tls::TLSOPT_TO_LE)
3630         {
3631           Insntype* wv = reinterpret_cast<Insntype*>(view);
3632           Insntype val;
3633
3634           value -= tls_segment->memsz();
3635
3636           switch (r_type)
3637             {
3638             case elfcpp::R_SPARC_TLS_GD_HI22:
3639               // TLS_GD_HI22 --> TLS_LE_HIX22
3640               Reloc::hix22(view, value, addend);
3641               break;
3642
3643             case elfcpp::R_SPARC_TLS_GD_LO10:
3644               // TLS_GD_LO10 --> TLS_LE_LOX10
3645               Reloc::lox10(view, value, addend);
3646               break;
3647
3648             case elfcpp::R_SPARC_TLS_GD_ADD:
3649               // add %reg1, %reg2, %reg3 --> mov %g7, %reg2, %reg3
3650               val = elfcpp::Swap<32, true>::readval(wv);
3651               val = (val & ~0x7c000) | 0x1c000;
3652               elfcpp::Swap<32, true>::writeval(wv, val);
3653               break;
3654             case elfcpp::R_SPARC_TLS_GD_CALL:
3655               // call __tls_get_addr --> nop
3656               elfcpp::Swap<32, true>::writeval(wv, sparc_nop);
3657               break;
3658             }
3659           break;
3660         }
3661       else
3662         {
3663           unsigned int got_type = (optimized_type == tls::TLSOPT_TO_IE
3664                                    ? GOT_TYPE_TLS_OFFSET
3665                                    : GOT_TYPE_TLS_PAIR);
3666           if (gsym != NULL)
3667             {
3668               gold_assert(gsym->has_got_offset(got_type));
3669               value = gsym->got_offset(got_type);
3670             }
3671           else
3672             {
3673               unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
3674               gold_assert(object->local_has_got_offset(r_sym, got_type));
3675               value = object->local_got_offset(r_sym, got_type);
3676             }
3677           if (optimized_type == tls::TLSOPT_TO_IE)
3678             {
3679               Insntype* wv = reinterpret_cast<Insntype*>(view);
3680               Insntype val;
3681
3682               switch (r_type)
3683                 {
3684                 case elfcpp::R_SPARC_TLS_GD_HI22:
3685                   // TLS_GD_HI22 --> TLS_IE_HI22
3686                   Reloc::hi22(view, value, addend);
3687                   break;
3688
3689                 case elfcpp::R_SPARC_TLS_GD_LO10:
3690                   // TLS_GD_LO10 --> TLS_IE_LO10
3691                   Reloc::lo10(view, value, addend);
3692                   break;
3693
3694                 case elfcpp::R_SPARC_TLS_GD_ADD:
3695                   // add %reg1, %reg2, %reg3 --> ld [%reg1 + %reg2], %reg3
3696                   val = elfcpp::Swap<32, true>::readval(wv);
3697
3698                   if (size == 64)
3699                     val |= 0xc0580000;
3700                   else
3701                     val |= 0xc0000000;
3702
3703                   elfcpp::Swap<32, true>::writeval(wv, val);
3704                   break;
3705
3706                 case elfcpp::R_SPARC_TLS_GD_CALL:
3707                   // The compiler can put the TLS_GD_ADD instruction
3708                   // into the delay slot of the call.  If so, we need
3709                   // to transpose the two instructions so that the
3710                   // new sequence works properly.
3711                   //
3712                   // The test we use is if the instruction in the
3713                   // delay slot is an add with destination register
3714                   // equal to %o0
3715                   val = elfcpp::Swap<32, true>::readval(wv + 1);
3716                   if ((val & 0x81f80000) == 0x80000000
3717                       && ((val >> 25) & 0x1f) == 0x8)
3718                     {
3719                       if (size == 64)
3720                         val |= 0xc0580000;
3721                       else
3722                         val |= 0xc0000000;
3723
3724                       elfcpp::Swap<32, true>::writeval(wv, val);
3725
3726                       wv += 1;
3727                       this->ignore_gd_add_ = true;
3728                     }
3729                   else
3730                     {
3731                       // Even if the delay slot isn't the TLS_GD_ADD
3732                       // instruction, we still have to handle the case
3733                       // where it sets up %o0 in some other way.
3734                       elfcpp::Swap<32, true>::writeval(wv, val);
3735                       wv += 1;
3736                       this->reloc_adjust_addr_ = view + 4;
3737                     }
3738                   // call __tls_get_addr --> add %g7, %o0, %o0
3739                   elfcpp::Swap<32, true>::writeval(wv, 0x9001c008);
3740                   break;
3741                 }
3742               break;
3743             }
3744           else if (optimized_type == tls::TLSOPT_NONE)
3745             {
3746               switch (r_type)
3747                 {
3748                 case elfcpp::R_SPARC_TLS_GD_HI22:
3749                   Reloc::hi22(view, value, addend);
3750                   break;
3751                 case elfcpp::R_SPARC_TLS_GD_LO10:
3752                   Reloc::lo10(view, value, addend);
3753                   break;
3754                 case elfcpp::R_SPARC_TLS_GD_ADD:
3755                   break;
3756                 case elfcpp::R_SPARC_TLS_GD_CALL:
3757                   {
3758                     Symbol_value<size> symval;
3759                     elfcpp::Elf_Xword value;
3760                     Symbol* tsym;
3761
3762                     tsym = target->tls_get_addr_sym_;
3763                     gold_assert(tsym);
3764                     value = (target->plt_section()->address() +
3765                              tsym->plt_offset());
3766                     symval.set_output_value(value);
3767                     Reloc::wdisp30(view, object, &symval, addend, address);
3768                   }
3769                   break;
3770                 }
3771               break;
3772             }
3773         }
3774       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
3775                              _("unsupported reloc %u"),
3776                              r_type);
3777       break;
3778
3779     case elfcpp::R_SPARC_TLS_LDM_HI22:
3780     case elfcpp::R_SPARC_TLS_LDM_LO10:
3781     case elfcpp::R_SPARC_TLS_LDM_ADD:
3782     case elfcpp::R_SPARC_TLS_LDM_CALL:
3783       if (optimized_type == tls::TLSOPT_TO_LE)
3784         {
3785           Insntype* wv = reinterpret_cast<Insntype*>(view);
3786
3787           switch (r_type)
3788             {
3789             case elfcpp::R_SPARC_TLS_LDM_HI22:
3790             case elfcpp::R_SPARC_TLS_LDM_LO10:
3791             case elfcpp::R_SPARC_TLS_LDM_ADD:
3792               elfcpp::Swap<32, true>::writeval(wv, sparc_nop);
3793               break;
3794
3795             case elfcpp::R_SPARC_TLS_LDM_CALL:
3796               elfcpp::Swap<32, true>::writeval(wv, sparc_mov_g0_o0);
3797               break;
3798             }
3799           break;
3800         }
3801       else if (optimized_type == tls::TLSOPT_NONE)
3802         {
3803           // Relocate the field with the offset of the GOT entry for
3804           // the module index.
3805           unsigned int got_offset;
3806
3807           got_offset = target->got_mod_index_entry(NULL, NULL, NULL);
3808           switch (r_type)
3809             {
3810             case elfcpp::R_SPARC_TLS_LDM_HI22:
3811               Reloc::hi22(view, got_offset, addend);
3812               break;
3813             case elfcpp::R_SPARC_TLS_LDM_LO10:
3814               Reloc::lo10(view, got_offset, addend);
3815               break;
3816             case elfcpp::R_SPARC_TLS_LDM_ADD:
3817               break;
3818             case elfcpp::R_SPARC_TLS_LDM_CALL:
3819               {
3820                 Symbol_value<size> symval;
3821                 elfcpp::Elf_Xword value;
3822                 Symbol* tsym;
3823
3824                 tsym = target->tls_get_addr_sym_;
3825                 gold_assert(tsym);
3826                 value = (target->plt_section()->address() +
3827                          tsym->plt_offset());
3828                 symval.set_output_value(value);
3829                 Reloc::wdisp30(view, object, &symval, addend, address);
3830               }
3831               break;
3832             }
3833           break;
3834         }
3835       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
3836                              _("unsupported reloc %u"),
3837                              r_type);
3838       break;
3839
3840       // These relocs can appear in debugging sections, in which case
3841       // we won't see the TLS_LDM relocs.  The local_dynamic_type
3842       // field tells us this.
3843     case elfcpp::R_SPARC_TLS_LDO_HIX22:
3844       if (optimized_type == tls::TLSOPT_TO_LE)
3845         {
3846           value -= tls_segment->memsz();
3847           Reloc::hix22(view, value, addend);
3848         }
3849       else
3850         Reloc::ldo_hix22(view, value, addend);
3851       break;
3852     case elfcpp::R_SPARC_TLS_LDO_LOX10:
3853       if (optimized_type == tls::TLSOPT_TO_LE)
3854         {
3855           value -= tls_segment->memsz();
3856           Reloc::lox10(view, value, addend);
3857         }
3858       else
3859         Reloc::ldo_lox10(view, value, addend);
3860       break;
3861     case elfcpp::R_SPARC_TLS_LDO_ADD:
3862       if (optimized_type == tls::TLSOPT_TO_LE)
3863         {
3864           Insntype* wv = reinterpret_cast<Insntype*>(view);
3865           Insntype val;
3866
3867           // add %reg1, %reg2, %reg3 --> add %g7, %reg2, %reg3
3868           val = elfcpp::Swap<32, true>::readval(wv);
3869           val = (val & ~0x7c000) | 0x1c000;
3870           elfcpp::Swap<32, true>::writeval(wv, val);
3871         }
3872       break;
3873
3874       // When optimizing IE --> LE, the only relocation that is handled
3875       // differently is R_SPARC_TLS_IE_LD, it is rewritten from
3876       // 'ld{,x} [rs1 + rs2], rd' into 'mov rs2, rd' or simply a NOP is
3877       // rs2 and rd are the same.
3878     case elfcpp::R_SPARC_TLS_IE_LD:
3879     case elfcpp::R_SPARC_TLS_IE_LDX:
3880       if (optimized_type == tls::TLSOPT_TO_LE)
3881         {
3882           Insntype* wv = reinterpret_cast<Insntype*>(view);
3883           Insntype val = elfcpp::Swap<32, true>::readval(wv);
3884           Insntype rs2 = val & 0x1f;
3885           Insntype rd = (val >> 25) & 0x1f;
3886
3887           if (rs2 == rd)
3888             val = sparc_nop;
3889           else
3890             val = sparc_mov | (val & 0x3e00001f);
3891
3892           elfcpp::Swap<32, true>::writeval(wv, val);
3893         }
3894       break;
3895
3896     case elfcpp::R_SPARC_TLS_IE_HI22:
3897     case elfcpp::R_SPARC_TLS_IE_LO10:
3898       if (optimized_type == tls::TLSOPT_TO_LE)
3899         {
3900           value -= tls_segment->memsz();
3901           switch (r_type)
3902             {
3903             case elfcpp::R_SPARC_TLS_IE_HI22:
3904               // IE_HI22 --> LE_HIX22
3905               Reloc::hix22(view, value, addend);
3906               break;
3907             case elfcpp::R_SPARC_TLS_IE_LO10:
3908               // IE_LO10 --> LE_LOX10
3909               Reloc::lox10(view, value, addend);
3910               break;
3911             }
3912           break;
3913         }
3914       else if (optimized_type == tls::TLSOPT_NONE)
3915         {
3916           // Relocate the field with the offset of the GOT entry for
3917           // the tp-relative offset of the symbol.
3918           if (gsym != NULL)
3919             {
3920               gold_assert(gsym->has_got_offset(GOT_TYPE_TLS_OFFSET));
3921               value = gsym->got_offset(GOT_TYPE_TLS_OFFSET);
3922             }
3923           else
3924             {
3925               unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
3926               gold_assert(object->local_has_got_offset(r_sym,
3927                                                        GOT_TYPE_TLS_OFFSET));
3928               value = object->local_got_offset(r_sym,
3929                                                GOT_TYPE_TLS_OFFSET);
3930             }
3931           switch (r_type)
3932             {
3933             case elfcpp::R_SPARC_TLS_IE_HI22:
3934               Reloc::hi22(view, value, addend);
3935               break;
3936             case elfcpp::R_SPARC_TLS_IE_LO10:
3937               Reloc::lo10(view, value, addend);
3938               break;
3939             }
3940           break;
3941         }
3942       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
3943                              _("unsupported reloc %u"),
3944                              r_type);
3945       break;
3946
3947     case elfcpp::R_SPARC_TLS_IE_ADD:
3948       // This seems to be mainly so that we can find the addition
3949       // instruction if there is one.  There doesn't seem to be any
3950       // actual relocation to apply.
3951       break;
3952
3953     case elfcpp::R_SPARC_TLS_LE_HIX22:
3954       // If we're creating a shared library, a dynamic relocation will
3955       // have been created for this location, so do not apply it now.
3956       if (!parameters->options().shared())
3957         {
3958           value -= tls_segment->memsz();
3959           Reloc::hix22(view, value, addend);
3960         }
3961       break;
3962
3963     case elfcpp::R_SPARC_TLS_LE_LOX10:
3964       // If we're creating a shared library, a dynamic relocation will
3965       // have been created for this location, so do not apply it now.
3966       if (!parameters->options().shared())
3967         {
3968           value -= tls_segment->memsz();
3969           Reloc::lox10(view, value, addend);
3970         }
3971       break;
3972     }
3973 }
3974
3975 // Relax a call instruction.
3976
3977 template<int size, bool big_endian>
3978 inline void
3979 Target_sparc<size, big_endian>::Relocate::relax_call(
3980     Target_sparc<size, big_endian>* target,
3981     unsigned char* view,
3982     const elfcpp::Rela<size, big_endian>& rela,
3983     section_size_type view_size)
3984 {
3985   typedef typename elfcpp::Swap<32, true>::Valtype Insntype;
3986   Insntype *wv = reinterpret_cast<Insntype*>(view);
3987   Insntype call_insn, delay_insn, set_insn;
3988   uint32_t op3, reg, off;
3989
3990   // This code tries to relax call instructions that meet
3991   // certain criteria.
3992   //
3993   // The first criteria is that the call must be such that the return
3994   // address which the call writes into %o7 is unused.  Two sequences
3995   // meet this criteria, and are used to implement tail calls.
3996   //
3997   // Leaf function tail call:
3998   //
3999   // or %o7, %g0, %ANY_REG
4000   // call FUNC
4001   //  or %ANY_REG, %g0, %o7
4002   //
4003   // Non-leaf function tail call:
4004   //
4005   // call FUNC
4006   //  restore
4007   //
4008   // The second criteria is that the call destination is close.  If
4009   // the displacement can fit in a signed 22-bit immediate field of a
4010   // pre-V9 branch, we can do it.  If we are generating a 64-bit
4011   // object or a 32-bit object with ELF machine type EF_SPARC32PLUS,
4012   // and the displacement fits in a signed 19-bit immediate field,
4013   // then we can use a V9 branch.
4014
4015   // Make sure the delay instruction can be safely accessed.
4016   if (rela.get_r_offset() + 8 > view_size)
4017     return;
4018
4019   call_insn = elfcpp::Swap<32, true>::readval(wv);
4020   delay_insn = elfcpp::Swap<32, true>::readval(wv + 1);
4021
4022   // Make sure it is really a call instruction.
4023   if (((call_insn >> 30) & 0x3) != 1)
4024     return;
4025
4026   if (((delay_insn >> 30) & 0x3) != 2)
4027     return;
4028
4029   // Accept only a restore or an integer arithmetic operation whose
4030   // sole side effect is to write the %o7 register (and perhaps set
4031   // the condition codes, which are considered clobbered across
4032   // function calls).
4033   //
4034   // For example, we don't want to match a tagged addition or
4035   // subtraction.  We also don't want to match something like a
4036   // divide.
4037   //
4038   // Specifically we accept add{,cc}, and{,cc}, or{,cc},
4039   // xor{,cc}, sub{,cc}, andn{,cc}, orn{,cc}, and xnor{,cc}.
4040
4041   op3 = (delay_insn >> 19) & 0x3f;
4042   reg = (delay_insn >> 25) & 0x1f;
4043   if (op3 != 0x3d
4044       && ((op3 & 0x28) != 0 || reg != 15))
4045     return;
4046
4047   // For non-restore instructions, make sure %o7 isn't
4048   // an input.
4049   if (op3 != 0x3d)
4050     {
4051       // First check RS1
4052       reg = (delay_insn >> 14) & 0x15;
4053       if (reg == 15)
4054         return;
4055
4056       // And if non-immediate, check RS2
4057       if (((delay_insn >> 13) & 1) == 0)
4058         {
4059           reg = (delay_insn & 0x1f);
4060           if (reg == 15)
4061             return;
4062         }
4063     }
4064
4065   // Now check the branch distance.  We are called after the
4066   // call has been relocated, so we just have to peek at the
4067   // offset contained in the instruction.
4068   off = call_insn & 0x3fffffff;
4069   if ((off & 0x3fe00000) != 0
4070       && (off & 0x3fe00000) != 0x3fe00000)
4071     return;
4072
4073   if ((size == 64 || target->elf_machine_ == elfcpp::EM_SPARC32PLUS)
4074       && ((off & 0x3c0000) == 0
4075           || (off & 0x3c0000) == 0x3c0000))
4076     {
4077       // ba,pt %xcc, FUNC
4078       call_insn = 0x10680000 | (off & 0x07ffff);
4079     }
4080   else
4081     {
4082       // ba FUNC
4083       call_insn = 0x10800000 | (off & 0x3fffff);
4084     }
4085   elfcpp::Swap<32, true>::writeval(wv, call_insn);
4086
4087   // See if we can NOP out the delay slot instruction.  We peek
4088   // at the instruction before the call to make sure we're dealing
4089   // with exactly the:
4090   //
4091   // or %o7, %g0, %ANY_REG
4092   // call
4093   //  or %ANY_REG, %g0, %o7
4094   //
4095   // case.  Otherwise this might be a tricky piece of hand written
4096   // assembler calculating %o7 in some non-trivial way, and therefore
4097   // we can't be sure that NOP'ing out the delay slot is safe.
4098   if (op3 == 0x02
4099       && rela.get_r_offset() >= 4)
4100     {
4101       if ((delay_insn & ~(0x1f << 14)) != 0x9e100000)
4102         return;
4103
4104       set_insn = elfcpp::Swap<32, true>::readval(wv - 1);
4105       if ((set_insn & ~(0x1f << 25)) != 0x8013c000)
4106         return;
4107
4108       reg = (set_insn >> 25) & 0x1f;
4109       if (reg == 0 || reg == 15)
4110         return;
4111       if (reg != ((delay_insn >> 14) & 0x1f))
4112         return;
4113
4114       // All tests pass, nop it out.
4115       elfcpp::Swap<32, true>::writeval(wv + 1, sparc_nop);
4116     }
4117 }
4118
4119 // Relocate section data.
4120
4121 template<int size, bool big_endian>
4122 void
4123 Target_sparc<size, big_endian>::relocate_section(
4124                         const Relocate_info<size, big_endian>* relinfo,
4125                         unsigned int sh_type,
4126                         const unsigned char* prelocs,
4127                         size_t reloc_count,
4128                         Output_section* output_section,
4129                         bool needs_special_offset_handling,
4130                         unsigned char* view,
4131                         typename elfcpp::Elf_types<size>::Elf_Addr address,
4132                         section_size_type view_size,
4133                         const Reloc_symbol_changes* reloc_symbol_changes)
4134 {
4135   typedef Target_sparc<size, big_endian> Sparc;
4136   typedef typename Target_sparc<size, big_endian>::Relocate Sparc_relocate;
4137
4138   gold_assert(sh_type == elfcpp::SHT_RELA);
4139
4140   gold::relocate_section<size, big_endian, Sparc, elfcpp::SHT_RELA,
4141                          Sparc_relocate, gold::Default_comdat_behavior>(
4142     relinfo,
4143     this,
4144     prelocs,
4145     reloc_count,
4146     output_section,
4147     needs_special_offset_handling,
4148     view,
4149     address,
4150     view_size,
4151     reloc_symbol_changes);
4152 }
4153
4154 // Return the size of a relocation while scanning during a relocatable
4155 // link.
4156
4157 template<int size, bool big_endian>
4158 unsigned int
4159 Target_sparc<size, big_endian>::Relocatable_size_for_reloc::get_size_for_reloc(
4160     unsigned int,
4161     Relobj*)
4162 {
4163   // We are always SHT_RELA, so we should never get here.
4164   gold_unreachable();
4165   return 0;
4166 }
4167
4168 // Scan the relocs during a relocatable link.
4169
4170 template<int size, bool big_endian>
4171 void
4172 Target_sparc<size, big_endian>::scan_relocatable_relocs(
4173                         Symbol_table* symtab,
4174                         Layout* layout,
4175                         Sized_relobj_file<size, big_endian>* object,
4176                         unsigned int data_shndx,
4177                         unsigned int sh_type,
4178                         const unsigned char* prelocs,
4179                         size_t reloc_count,
4180                         Output_section* output_section,
4181                         bool needs_special_offset_handling,
4182                         size_t local_symbol_count,
4183                         const unsigned char* plocal_symbols,
4184                         Relocatable_relocs* rr)
4185 {
4186   gold_assert(sh_type == elfcpp::SHT_RELA);
4187
4188   typedef gold::Default_scan_relocatable_relocs<elfcpp::SHT_RELA,
4189     Relocatable_size_for_reloc> Scan_relocatable_relocs;
4190
4191   gold::scan_relocatable_relocs<size, big_endian, elfcpp::SHT_RELA,
4192       Scan_relocatable_relocs>(
4193     symtab,
4194     layout,
4195     object,
4196     data_shndx,
4197     prelocs,
4198     reloc_count,
4199     output_section,
4200     needs_special_offset_handling,
4201     local_symbol_count,
4202     plocal_symbols,
4203     rr);
4204 }
4205
4206 // Emit relocations for a section.
4207
4208 template<int size, bool big_endian>
4209 void
4210 Target_sparc<size, big_endian>::relocate_relocs(
4211     const Relocate_info<size, big_endian>* relinfo,
4212     unsigned int sh_type,
4213     const unsigned char* prelocs,
4214     size_t reloc_count,
4215     Output_section* output_section,
4216     off_t offset_in_output_section,
4217     const Relocatable_relocs* rr,
4218     unsigned char* view,
4219     typename elfcpp::Elf_types<size>::Elf_Addr view_address,
4220     section_size_type view_size,
4221     unsigned char* reloc_view,
4222     section_size_type reloc_view_size)
4223 {
4224   gold_assert(sh_type == elfcpp::SHT_RELA);
4225
4226   gold::relocate_relocs<size, big_endian, elfcpp::SHT_RELA>(
4227     relinfo,
4228     prelocs,
4229     reloc_count,
4230     output_section,
4231     offset_in_output_section,
4232     rr,
4233     view,
4234     view_address,
4235     view_size,
4236     reloc_view,
4237     reloc_view_size);
4238 }
4239
4240 // Return the value to use for a dynamic which requires special
4241 // treatment.  This is how we support equality comparisons of function
4242 // pointers across shared library boundaries, as described in the
4243 // processor specific ABI supplement.
4244
4245 template<int size, bool big_endian>
4246 uint64_t
4247 Target_sparc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const
4248 {
4249   gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset());
4250   return this->plt_section()->address() + gsym->plt_offset();
4251 }
4252
4253 // do_make_elf_object to override the same function in the base class.
4254 // We need to use a target-specific sub-class of
4255 // Sized_relobj_file<size, big_endian> to process SPARC specific bits
4256 // of the ELF headers.  Hence we need to have our own ELF object creation.
4257
4258 template<int size, bool big_endian>
4259 Object*
4260 Target_sparc<size, big_endian>::do_make_elf_object(
4261     const std::string& name,
4262     Input_file* input_file,
4263     off_t offset, const elfcpp::Ehdr<size, big_endian>& ehdr)
4264 {
4265   elfcpp::Elf_Half machine = ehdr.get_e_machine();
4266   elfcpp::Elf_Word flags = ehdr.get_e_flags();
4267   elfcpp::Elf_Word omm, mm;
4268
4269   switch (machine)
4270     {
4271     case elfcpp::EM_SPARC32PLUS:
4272       this->elf_machine_ = elfcpp::EM_SPARC32PLUS;
4273       break;
4274
4275     case elfcpp::EM_SPARC:
4276     case elfcpp::EM_SPARCV9:
4277       break;
4278
4279     default:
4280       break;
4281     }
4282
4283   if (!this->elf_flags_set_)
4284     {
4285       this->elf_flags_ = flags;
4286       this->elf_flags_set_ = true;
4287     }
4288   else
4289     {
4290       // Accumulate cpu feature bits.
4291       this->elf_flags_ |= (flags & (elfcpp::EF_SPARC_32PLUS
4292                                     | elfcpp::EF_SPARC_SUN_US1
4293                                     | elfcpp::EF_SPARC_HAL_R1
4294                                     | elfcpp::EF_SPARC_SUN_US3));
4295
4296       // Bump the memory model setting to the most restrictive
4297       // one we encounter.
4298       omm = (this->elf_flags_ & elfcpp::EF_SPARCV9_MM);
4299       mm = (flags & elfcpp::EF_SPARCV9_MM);
4300       if (omm != mm)
4301         {
4302           if (mm == elfcpp::EF_SPARCV9_TSO)
4303             {
4304               this->elf_flags_ &= ~elfcpp::EF_SPARCV9_MM;
4305               this->elf_flags_ |= elfcpp::EF_SPARCV9_TSO;
4306             }
4307           else if (mm == elfcpp::EF_SPARCV9_PSO
4308                    && omm == elfcpp::EF_SPARCV9_RMO)
4309             {
4310               this->elf_flags_ &= ~elfcpp::EF_SPARCV9_MM;
4311               this->elf_flags_ |= elfcpp::EF_SPARCV9_PSO;
4312             }
4313         }
4314     }
4315
4316   // Validate that the little-endian flag matches how we've
4317   // been instantiated.
4318   if (!(flags & elfcpp::EF_SPARC_LEDATA) != big_endian)
4319     {
4320       if (big_endian)
4321         gold_error(_("%s: little endian elf flag set on BE object"),
4322                      name.c_str());
4323       else
4324         gold_error(_("%s: little endian elf flag clear on LE object"),
4325                      name.c_str());
4326     }
4327
4328   return Target::do_make_elf_object(name, input_file, offset, ehdr);
4329 }
4330
4331 // Adjust ELF file header.
4332
4333 template<int size, bool big_endian>
4334 void
4335 Target_sparc<size, big_endian>::do_adjust_elf_header(
4336     unsigned char* view,
4337     int len) const
4338 {
4339   elfcpp::Ehdr_write<size, big_endian> oehdr(view);
4340
4341   oehdr.put_e_machine(this->elf_machine_);
4342   oehdr.put_e_flags(this->elf_flags_);
4343
4344   Sized_target<size, big_endian>::do_adjust_elf_header(view, len);
4345 }
4346
4347 // The selector for sparc object files.
4348
4349 template<int size, bool big_endian>
4350 class Target_selector_sparc : public Target_selector
4351 {
4352 public:
4353   Target_selector_sparc()
4354     : Target_selector(elfcpp::EM_NONE, size, big_endian,
4355                       (size == 64 ? "elf64-sparc" : "elf32-sparc"),
4356                       (size == 64 ? "elf64_sparc" : "elf32_sparc"))
4357   { }
4358
4359   virtual Target*
4360   do_recognize(Input_file*, off_t, int machine, int, int)
4361   {
4362     switch (size)
4363       {
4364       case 64:
4365         if (machine != elfcpp::EM_SPARCV9)
4366           return NULL;
4367         break;
4368
4369       case 32:
4370         if (machine != elfcpp::EM_SPARC
4371             && machine != elfcpp::EM_SPARC32PLUS)
4372           return NULL;
4373         break;
4374
4375       default:
4376         return NULL;
4377       }
4378
4379     return this->instantiate_target();
4380   }
4381
4382   virtual Target*
4383   do_instantiate_target()
4384   { return new Target_sparc<size, big_endian>(); }
4385 };
4386
4387 Target_selector_sparc<32, true> target_selector_sparc32;
4388 Target_selector_sparc<64, true> target_selector_sparc64;
4389
4390 } // End anonymous namespace.