gold/sparc.cc

   1 // sparc.cc -- sparc target support for gold.
   2
   3 // Copyright 2008, 2009 Free Software Foundation, Inc.
   4 // Written by David S. Miller <davem@davemloft.net>.
   5
   6 // This file is part of gold.
   7
   8 // This program is free software; you can redistribute it and/or modify
   9 // it under the terms of the GNU General Public License as published by
  10 // the Free Software Foundation; either version 3 of the License, or
  11 // (at your option) any later version.
  12
  13 // This program is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17
  18 // You should have received a copy of the GNU General Public License
  19 // along with this program; if not, write to the Free Software
  20 // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  21 // MA 02110-1301, USA.
  22
  23 #include "gold.h"
  24
  25 #include <cstdlib>
  26 #include <cstdio>
  27 #include <cstring>
  28
  29 #include "elfcpp.h"
  30 #include "parameters.h"
  31 #include "reloc.h"
  32 #include "sparc.h"
  33 #include "object.h"
  34 #include "symtab.h"
  35 #include "layout.h"
  36 #include "output.h"
  37 #include "copy-relocs.h"
  38 #include "target.h"
  39 #include "target-reloc.h"
  40 #include "target-select.h"
  41 #include "tls.h"
  42 #include "errors.h"
  43 #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),
  62       copy_relocs_(elfcpp::R_SPARC_COPY), dynbss_(NULL),
  63       got_mod_index_offset_(-1U), tls_get_addr_sym_(NULL)
  64   {
  65   }
  66
  67   // Process the relocations to determine unreferenced sections for
  68   // garbage collection.
  69   void
  70   gc_process_relocs(Symbol_table* symtab,
  71                     Layout* layout,
  72                     Sized_relobj<size, big_endian>* object,
  73                     unsigned int data_shndx,
  74                     unsigned int sh_type,
  75                     const unsigned char* prelocs,
  76                     size_t reloc_count,
  77                     Output_section* output_section,
  78                     bool needs_special_offset_handling,
  79                     size_t local_symbol_count,
  80                     const unsigned char* plocal_symbols);
  81
  82   // Scan the relocations to look for symbol adjustments.
  83   void
  84   scan_relocs(Symbol_table* symtab,
  85               Layout* layout,
  86               Sized_relobj<size, big_endian>* object,
  87               unsigned int data_shndx,
  88               unsigned int sh_type,
  89               const unsigned char* prelocs,
  90               size_t reloc_count,
  91               Output_section* output_section,
  92               bool needs_special_offset_handling,
  93               size_t local_symbol_count,
  94               const unsigned char* plocal_symbols);
  95   // Finalize the sections.
  96   void
  97   do_finalize_sections(Layout*, const Input_objects*, Symbol_table*);
  98
  99   // Return the value to use for a dynamic which requires special
 100   // treatment.
 101   uint64_t
 102   do_dynsym_value(const Symbol*) const;
 103
 104   // Relocate a section.
 105   void
 106   relocate_section(const Relocate_info<size, big_endian>*,
 107                    unsigned int sh_type,
 108                    const unsigned char* prelocs,
 109                    size_t reloc_count,
 110                    Output_section* output_section,
 111                    bool needs_special_offset_handling,
 112                    unsigned char* view,
 113                    typename elfcpp::Elf_types<size>::Elf_Addr view_address,
 114                    section_size_type view_size,
 115                    const Reloc_symbol_changes*);
 116
 117   // Scan the relocs during a relocatable link.
 118   void
 119   scan_relocatable_relocs(Symbol_table* symtab,
 120                           Layout* layout,
 121                           Sized_relobj<size, big_endian>* object,
 122                           unsigned int data_shndx,
 123                           unsigned int sh_type,
 124                           const unsigned char* prelocs,
 125                           size_t reloc_count,
 126                           Output_section* output_section,
 127                           bool needs_special_offset_handling,
 128                           size_t local_symbol_count,
 129                           const unsigned char* plocal_symbols,
 130                           Relocatable_relocs*);
 131
 132   // Relocate a section during a relocatable link.
 133   void
 134   relocate_for_relocatable(const Relocate_info<size, big_endian>*,
 135                            unsigned int sh_type,
 136                            const unsigned char* prelocs,
 137                            size_t reloc_count,
 138                            Output_section* output_section,
 139                            off_t offset_in_output_section,
 140                            const Relocatable_relocs*,
 141                            unsigned char* view,
 142                            typename elfcpp::Elf_types<size>::Elf_Addr view_address,
 143                            section_size_type view_size,
 144                            unsigned char* reloc_view,
 145                            section_size_type reloc_view_size);
 146   // Return whether SYM is defined by the ABI.
 147   bool
 148   do_is_defined_by_abi(const Symbol* sym) const
 149   {
 150     // XXX Really need to support this better...
 151     if (sym->type() == elfcpp::STT_SPARC_REGISTER)
 152       return 1;
 153
 154     return strcmp(sym->name(), "___tls_get_addr") == 0;
 155   }
 156
 157   // Return whether there is a GOT section.
 158   bool
 159   has_got_section() const
 160   { return this->got_ != NULL; }
 161
 162   // Return the size of the GOT section.
 163   section_size_type
 164   got_size()
 165   {
 166     gold_assert(this->got_ != NULL);
 167     return this->got_->data_size();
 168   }
 169
 170  private:
 171
 172   // The class which scans relocations.
 173   class Scan
 174   {
 175   public:
 176     Scan()
 177       : issued_non_pic_error_(false)
 178     { }
 179
 180     inline void
 181     local(Symbol_table* symtab, Layout* layout, Target_sparc* target,
 182           Sized_relobj<size, big_endian>* object,
 183           unsigned int data_shndx,
 184           Output_section* output_section,
 185           const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type,
 186           const elfcpp::Sym<size, big_endian>& lsym);
 187
 188     inline void
 189     global(Symbol_table* symtab, Layout* layout, Target_sparc* target,
 190            Sized_relobj<size, big_endian>* object,
 191            unsigned int data_shndx,
 192            Output_section* output_section,
 193            const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type,
 194            Symbol* gsym);
 195
 196   private:
 197     static void
 198     unsupported_reloc_local(Sized_relobj<size, big_endian>*,
 199                             unsigned int r_type);
 200
 201     static void
 202     unsupported_reloc_global(Sized_relobj<size, big_endian>*,
 203                              unsigned int r_type, Symbol*);
 204
 205     static void
 206     generate_tls_call(Symbol_table* symtab, Layout* layout,
 207                       Target_sparc* target);
 208
 209     void
 210     check_non_pic(Relobj*, unsigned int r_type);
 211
 212     // Whether we have issued an error about a non-PIC compilation.
 213     bool issued_non_pic_error_;
 214   };
 215
 216   // The class which implements relocation.
 217   class Relocate
 218   {
 219    public:
 220     Relocate()
 221       : ignore_gd_add_(false)
 222     { }
 223
 224     ~Relocate()
 225     {
 226       if (this->ignore_gd_add_)
 227         {
 228           // FIXME: This needs to specify the location somehow.
 229           gold_error(_("missing expected TLS relocation"));
 230         }
 231     }
 232
 233     // Do a relocation.  Return false if the caller should not issue
 234     // any warnings about this relocation.
 235     inline bool
 236     relocate(const Relocate_info<size, big_endian>*, Target_sparc*,
 237              Output_section*, size_t relnum,
 238              const elfcpp::Rela<size, big_endian>&,
 239              unsigned int r_type, const Sized_symbol<size>*,
 240              const Symbol_value<size>*,
 241              unsigned char*,
 242              typename elfcpp::Elf_types<size>::Elf_Addr,
 243              section_size_type);
 244
 245    private:
 246     // Do a TLS relocation.
 247     inline void
 248     relocate_tls(const Relocate_info<size, big_endian>*, Target_sparc* target,
 249                  size_t relnum, const elfcpp::Rela<size, big_endian>&,
 250                  unsigned int r_type, const Sized_symbol<size>*,
 251                  const Symbol_value<size>*,
 252                  unsigned char*,
 253                  typename elfcpp::Elf_types<size>::Elf_Addr,
 254                  section_size_type);
 255
 256     // Ignore the next relocation which should be R_SPARC_TLS_GD_ADD
 257     bool ignore_gd_add_;
 258   };
 259
 260   // A class which returns the size required for a relocation type,
 261   // used while scanning relocs during a relocatable link.
 262   class Relocatable_size_for_reloc
 263   {
 264    public:
 265     unsigned int
 266     get_size_for_reloc(unsigned int, Relobj*);
 267   };
 268
 269   // Get the GOT section, creating it if necessary.
 270   Output_data_got<size, big_endian>*
 271   got_section(Symbol_table*, Layout*);
 272
 273   // Create a PLT entry for a global symbol.
 274   void
 275   make_plt_entry(Symbol_table*, Layout*, Symbol*);
 276
 277   // Create a GOT entry for the TLS module index.
 278   unsigned int
 279   got_mod_index_entry(Symbol_table* symtab, Layout* layout,
 280                       Sized_relobj<size, big_endian>* object);
 281
 282   // Return the gsym for "__tls_get_addr".  Cache if not already
 283   // cached.
 284   Symbol*
 285   tls_get_addr_sym(Symbol_table* symtab)
 286   {
 287     if (!this->tls_get_addr_sym_)
 288       this->tls_get_addr_sym_ = symtab->lookup("__tls_get_addr", NULL);
 289     gold_assert(this->tls_get_addr_sym_);
 290     return this->tls_get_addr_sym_;
 291   }
 292
 293   // Get the PLT section.
 294   const Output_data_plt_sparc<size, big_endian>*
 295   plt_section() const
 296   {
 297     gold_assert(this->plt_ != NULL);
 298     return this->plt_;
 299   }
 300
 301   // Get the dynamic reloc section, creating it if necessary.
 302   Reloc_section*
 303   rela_dyn_section(Layout*);
 304
 305   // Copy a relocation against a global symbol.
 306   void
 307   copy_reloc(Symbol_table* symtab, Layout* layout,
 308              Sized_relobj<size, big_endian>* object,
 309              unsigned int shndx, Output_section* output_section,
 310              Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc)
 311   {
 312     this->copy_relocs_.copy_reloc(symtab, layout,
 313                                   symtab->get_sized_symbol<size>(sym),
 314                                   object, shndx, output_section,
 315                                   reloc, this->rela_dyn_section(layout));
 316   }
 317
 318   // Information about this specific target which we pass to the
 319   // general Target structure.
 320   static Target::Target_info sparc_info;
 321
 322   // The types of GOT entries needed for this platform.
 323   enum Got_type
 324   {
 325     GOT_TYPE_STANDARD = 0,      // GOT entry for a regular symbol
 326     GOT_TYPE_TLS_OFFSET = 1,    // GOT entry for TLS offset
 327     GOT_TYPE_TLS_PAIR = 2,      // GOT entry for TLS module/offset pair
 328   };
 329
 330   // The GOT section.
 331   Output_data_got<size, big_endian>* got_;
 332   // The PLT section.
 333   Output_data_plt_sparc<size, big_endian>* plt_;
 334   // The dynamic reloc section.
 335   Reloc_section* rela_dyn_;
 336   // Relocs saved to avoid a COPY reloc.
 337   Copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_;
 338   // Space for variables copied with a COPY reloc.
 339   Output_data_space* dynbss_;
 340   // Offset of the GOT entry for the TLS module index;
 341   unsigned int got_mod_index_offset_;
 342   // Cached pointer to __tls_get_addr symbol
 343   Symbol* tls_get_addr_sym_;
 344 };
 345
 346 template<>
 347 Target::Target_info Target_sparc<32, true>::sparc_info =
 348 {
 349   32,                   // size
 350   true,                 // is_big_endian
 351   elfcpp::EM_SPARC,     // machine_code
 352   false,                // has_make_symbol
 353   false,                // has_resolve
 354   false,                // has_code_fill
 355   true,                 // is_default_stack_executable
 356   '\0',                 // wrap_char
 357   "/usr/lib/ld.so.1",   // dynamic_linker
 358   0x00010000,           // default_text_segment_address
 359   64 * 1024,            // abi_pagesize (overridable by -z max-page-size)
 360   8 * 1024,             // common_pagesize (overridable by -z common-page-size)
 361   elfcpp::SHN_UNDEF,    // small_common_shndx
 362   elfcpp::SHN_UNDEF,    // large_common_shndx
 363   0,                    // small_common_section_flags
 364   0,                    // large_common_section_flags
 365   NULL,                 // attributes_section
 366   NULL                  // attributes_vendor
 367 };
 368
 369 template<>
 370 Target::Target_info Target_sparc<64, true>::sparc_info =
 371 {
 372   64,                   // size
 373   true,                 // is_big_endian
 374   elfcpp::EM_SPARCV9,   // machine_code
 375   false,                // has_make_symbol
 376   false,                // has_resolve
 377   false,                // has_code_fill
 378   true,                 // is_default_stack_executable
 379   '\0',                 // wrap_char
 380   "/usr/lib/sparcv9/ld.so.1",   // dynamic_linker
 381   0x100000,             // default_text_segment_address
 382   64 * 1024,            // abi_pagesize (overridable by -z max-page-size)
 383   8 * 1024,             // common_pagesize (overridable by -z common-page-size)
 384   elfcpp::SHN_UNDEF,    // small_common_shndx
 385   elfcpp::SHN_UNDEF,    // large_common_shndx
 386   0,                    // small_common_section_flags
 387   0,                    // large_common_section_flags
 388   NULL,                 // attributes_section
 389   NULL                  // attributes_vendor
 390 };
 391
 392 // We have to take care here, even when operating in little-endian
 393 // mode, sparc instructions are still big endian.
 394 template<int size, bool big_endian>
 395 class Sparc_relocate_functions
 396 {
 397 private:
 398   // Do a simple relocation with the addend in the relocation.
 399   template<int valsize>
 400   static inline void
 401   rela(unsigned char* view,
 402        unsigned int right_shift,
 403        typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
 404        typename elfcpp::Swap<size, big_endian>::Valtype avalue,
 405        typename elfcpp::Swap<size, big_endian>::Valtype addend)
 406   {
 407     typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
 408     Valtype* wv = reinterpret_cast<Valtype*>(view);
 409     Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
 410     Valtype reloc = ((avalue + addend) >> right_shift);
 411
 412     val &= ~dst_mask;
 413     reloc &= dst_mask;
 414
 415     elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
 416   }
 417
 418   // Do a simple relocation using a symbol value with the addend in
 419   // the relocation.
 420   template<int valsize>
 421   static inline void
 422   rela(unsigned char* view,
 423        unsigned int right_shift,
 424        typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
 425        const Sized_relobj<size, big_endian>* object,
 426        const Symbol_value<size>* psymval,
 427        typename elfcpp::Swap<valsize, big_endian>::Valtype addend)
 428   {
 429     typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
 430     Valtype* wv = reinterpret_cast<Valtype*>(view);
 431     Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
 432     Valtype reloc = (psymval->value(object, addend) >> right_shift);
 433
 434     val &= ~dst_mask;
 435     reloc &= dst_mask;
 436
 437     elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
 438   }
 439
 440   // Do a simple relocation using a symbol value with the addend in
 441   // the relocation, unaligned.
 442   template<int valsize>
 443   static inline void
 444   rela_ua(unsigned char* view,
 445           unsigned int right_shift, elfcpp::Elf_Xword dst_mask,
 446           const Sized_relobj<size, big_endian>* object,
 447           const Symbol_value<size>* psymval,
 448           typename elfcpp::Swap<size, big_endian>::Valtype addend)
 449   {
 450     typedef typename elfcpp::Swap_unaligned<valsize,
 451             big_endian>::Valtype Valtype;
 452     unsigned char* wv = view;
 453     Valtype val = elfcpp::Swap_unaligned<valsize, big_endian>::readval(wv);
 454     Valtype reloc = (psymval->value(object, addend) >> right_shift);
 455
 456     val &= ~dst_mask;
 457     reloc &= dst_mask;
 458
 459     elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, val | reloc);
 460   }
 461
 462   // Do a simple PC relative relocation with a Symbol_value with the
 463   // addend in the relocation.
 464   template<int valsize>
 465   static inline void
 466   pcrela(unsigned char* view,
 467          unsigned int right_shift,
 468          typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
 469          const Sized_relobj<size, big_endian>* object,
 470          const Symbol_value<size>* psymval,
 471          typename elfcpp::Swap<size, big_endian>::Valtype addend,
 472          typename elfcpp::Elf_types<size>::Elf_Addr address)
 473   {
 474     typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
 475     Valtype* wv = reinterpret_cast<Valtype*>(view);
 476     Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
 477     Valtype reloc = ((psymval->value(object, addend) - address)
 478                      >> right_shift);
 479
 480     val &= ~dst_mask;
 481     reloc &= dst_mask;
 482
 483     elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
 484   }
 485
 486   template<int valsize>
 487   static inline void
 488   pcrela_unaligned(unsigned char* view,
 489                    const Sized_relobj<size, big_endian>* object,
 490                    const Symbol_value<size>* psymval,
 491                    typename elfcpp::Swap<size, big_endian>::Valtype addend,
 492                    typename elfcpp::Elf_types<size>::Elf_Addr address)
 493   {
 494     typedef typename elfcpp::Swap_unaligned<valsize,
 495             big_endian>::Valtype Valtype;
 496     unsigned char* wv = view;
 497     Valtype reloc = (psymval->value(object, addend) - address);
 498
 499     elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, reloc);
 500   }
 501
 502   typedef Sparc_relocate_functions<size, big_endian> This;
 503   typedef Sparc_relocate_functions<size, true> This_insn;
 504
 505 public:
 506   // R_SPARC_WDISP30: (Symbol + Addend - Address) >> 2
 507   static inline void
 508   wdisp30(unsigned char* view,
 509            const Sized_relobj<size, big_endian>* object,
 510            const Symbol_value<size>* psymval,
 511            typename elfcpp::Elf_types<size>::Elf_Addr addend,
 512            typename elfcpp::Elf_types<size>::Elf_Addr address)
 513   {
 514     This_insn::template pcrela<32>(view, 2, 0x3fffffff, object,
 515                                    psymval, addend, address);
 516   }
 517
 518   // R_SPARC_WDISP22: (Symbol + Addend - Address) >> 2
 519   static inline void
 520   wdisp22(unsigned char* view,
 521            const Sized_relobj<size, big_endian>* object,
 522            const Symbol_value<size>* psymval,
 523            typename elfcpp::Elf_types<size>::Elf_Addr addend,
 524            typename elfcpp::Elf_types<size>::Elf_Addr address)
 525   {
 526     This_insn::template pcrela<32>(view, 2, 0x003fffff, object,
 527                                    psymval, addend, address);
 528   }
 529
 530   // R_SPARC_WDISP19: (Symbol + Addend - Address) >> 2
 531   static inline void
 532   wdisp19(unsigned char* view,
 533           const Sized_relobj<size, big_endian>* object,
 534           const Symbol_value<size>* psymval,
 535           typename elfcpp::Elf_types<size>::Elf_Addr addend,
 536           typename elfcpp::Elf_types<size>::Elf_Addr address)
 537   {
 538     This_insn::template pcrela<32>(view, 2, 0x0007ffff, object,
 539                                    psymval, addend, address);
 540   }
 541
 542   // R_SPARC_WDISP16: (Symbol + Addend - Address) >> 2
 543   static inline void
 544   wdisp16(unsigned char* view,
 545           const Sized_relobj<size, big_endian>* object,
 546           const Symbol_value<size>* psymval,
 547           typename elfcpp::Elf_types<size>::Elf_Addr addend,
 548           typename elfcpp::Elf_types<size>::Elf_Addr address)
 549   {
 550     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
 551     Valtype* wv = reinterpret_cast<Valtype*>(view);
 552     Valtype val = elfcpp::Swap<32, true>::readval(wv);
 553     Valtype reloc = ((psymval->value(object, addend) - address)
 554                      >> 2);
 555
 556     // The relocation value is split between the low 14 bits,
 557     // and bits 20-21.
 558     val &= ~((0x3 << 20) | 0x3fff);
 559     reloc = (((reloc & 0xc000) << (20 - 14))
 560              | (reloc & 0x3ffff));
 561
 562     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
 563   }
 564
 565   // R_SPARC_PC22: (Symbol + Addend - Address) >> 10
 566   static inline void
 567   pc22(unsigned char* view,
 568        const Sized_relobj<size, big_endian>* object,
 569        const Symbol_value<size>* psymval,
 570        typename elfcpp::Elf_types<size>::Elf_Addr addend,
 571        typename elfcpp::Elf_types<size>::Elf_Addr address)
 572   {
 573     This_insn::template pcrela<32>(view, 10, 0x003fffff, object,
 574                                    psymval, addend, address);
 575   }
 576
 577   // R_SPARC_PC10: (Symbol + Addend - Address) & 0x3ff
 578   static inline void
 579   pc10(unsigned char* view,
 580        const Sized_relobj<size, big_endian>* object,
 581        const Symbol_value<size>* psymval,
 582        typename elfcpp::Elf_types<size>::Elf_Addr addend,
 583        typename elfcpp::Elf_types<size>::Elf_Addr address)
 584   {
 585     This_insn::template pcrela<32>(view, 0, 0x000003ff, object,
 586                                    psymval, addend, address);
 587   }
 588
 589   // R_SPARC_HI22: (Symbol + Addend) >> 10
 590   static inline void
 591   hi22(unsigned char* view,
 592        typename elfcpp::Elf_types<size>::Elf_Addr avalue,
 593        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 594   {
 595     This_insn::template rela<32>(view, 10, 0x003fffff, avalue, addend);
 596   }
 597
 598   // R_SPARC_HI22: (Symbol + Addend) >> 10
 599   static inline void
 600   hi22(unsigned char* view,
 601        const Sized_relobj<size, big_endian>* object,
 602        const Symbol_value<size>* psymval,
 603        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 604   {
 605     This_insn::template rela<32>(view, 10, 0x003fffff, object, psymval, addend);
 606   }
 607
 608   // R_SPARC_PCPLT22: (Symbol + Addend - Address) >> 10
 609   static inline void
 610   pcplt22(unsigned char* view,
 611           const Sized_relobj<size, big_endian>* object,
 612           const Symbol_value<size>* psymval,
 613           typename elfcpp::Elf_types<size>::Elf_Addr addend,
 614           typename elfcpp::Elf_types<size>::Elf_Addr address)
 615   {
 616     This_insn::template pcrela<32>(view, 10, 0x003fffff, object,
 617                                    psymval, addend, address);
 618   }
 619
 620   // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
 621   static inline void
 622   lo10(unsigned char* view,
 623        typename elfcpp::Elf_types<size>::Elf_Addr avalue,
 624        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 625   {
 626     This_insn::template rela<32>(view, 0, 0x000003ff, avalue, addend);
 627   }
 628
 629   // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
 630   static inline void
 631   lo10(unsigned char* view,
 632        const Sized_relobj<size, big_endian>* object,
 633        const Symbol_value<size>* psymval,
 634        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 635   {
 636     This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend);
 637   }
 638
 639   // R_SPARC_LO10: (Symbol + Addend) & 0x3ff
 640   static inline void
 641   lo10(unsigned char* view,
 642        const Sized_relobj<size, big_endian>* object,
 643        const Symbol_value<size>* psymval,
 644        typename elfcpp::Elf_types<size>::Elf_Addr addend,
 645        typename elfcpp::Elf_types<size>::Elf_Addr address)
 646   {
 647     This_insn::template pcrela<32>(view, 0, 0x000003ff, object,
 648                                    psymval, addend, address);
 649   }
 650
 651   // R_SPARC_OLO10: ((Symbol + Addend) & 0x3ff) + Addend2
 652   static inline void
 653   olo10(unsigned char* view,
 654         const Sized_relobj<size, big_endian>* object,
 655         const Symbol_value<size>* psymval,
 656         typename elfcpp::Elf_types<size>::Elf_Addr addend,
 657         typename elfcpp::Elf_types<size>::Elf_Addr addend2)
 658   {
 659     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
 660     Valtype* wv = reinterpret_cast<Valtype*>(view);
 661     Valtype val = elfcpp::Swap<32, true>::readval(wv);
 662     Valtype reloc = psymval->value(object, addend);
 663
 664     val &= ~0x1fff;
 665     reloc &= 0x3ff;
 666     reloc += addend2;
 667     reloc &= 0x1fff;
 668
 669     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
 670   }
 671
 672   // R_SPARC_22: (Symbol + Addend)
 673   static inline void
 674   rela32_22(unsigned char* view,
 675             const Sized_relobj<size, big_endian>* object,
 676             const Symbol_value<size>* psymval,
 677             typename elfcpp::Elf_types<size>::Elf_Addr addend)
 678   {
 679     This_insn::template rela<32>(view, 0, 0x003fffff, object, psymval, addend);
 680   }
 681
 682   // R_SPARC_13: (Symbol + Addend)
 683   static inline void
 684   rela32_13(unsigned char* view,
 685             typename elfcpp::Elf_types<size>::Elf_Addr avalue,
 686             typename elfcpp::Elf_types<size>::Elf_Addr addend)
 687   {
 688     This_insn::template rela<32>(view, 0, 0x00001fff, avalue, addend);
 689   }
 690
 691   // R_SPARC_13: (Symbol + Addend)
 692   static inline void
 693   rela32_13(unsigned char* view,
 694             const Sized_relobj<size, big_endian>* object,
 695             const Symbol_value<size>* psymval,
 696             typename elfcpp::Elf_types<size>::Elf_Addr addend)
 697   {
 698     This_insn::template rela<32>(view, 0, 0x00001fff, object, psymval, addend);
 699   }
 700
 701   // R_SPARC_UA16: (Symbol + Addend)
 702   static inline void
 703   ua16(unsigned char* view,
 704        const Sized_relobj<size, big_endian>* object,
 705        const Symbol_value<size>* psymval,
 706        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 707   {
 708     This::template rela_ua<16>(view, 0, 0xffff, object, psymval, addend);
 709   }
 710
 711   // R_SPARC_UA32: (Symbol + Addend)
 712   static inline void
 713   ua32(unsigned char* view,
 714        const Sized_relobj<size, big_endian>* object,
 715        const Symbol_value<size>* psymval,
 716        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 717   {
 718     This::template rela_ua<32>(view, 0, 0xffffffff, object, psymval, addend);
 719   }
 720
 721   // R_SPARC_UA64: (Symbol + Addend)
 722   static inline void
 723   ua64(unsigned char* view,
 724        const Sized_relobj<size, big_endian>* object,
 725        const Symbol_value<size>* psymval,
 726        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 727   {
 728     This::template rela_ua<64>(view, 0, ~(elfcpp::Elf_Xword) 0,
 729                                object, psymval, addend);
 730   }
 731
 732   // R_SPARC_DISP8: (Symbol + Addend - Address)
 733   static inline void
 734   disp8(unsigned char* view,
 735         const Sized_relobj<size, big_endian>* object,
 736         const Symbol_value<size>* psymval,
 737         typename elfcpp::Elf_types<size>::Elf_Addr addend,
 738         typename elfcpp::Elf_types<size>::Elf_Addr address)
 739   {
 740     This::template pcrela_unaligned<8>(view, object, psymval,
 741                                        addend, address);
 742   }
 743
 744   // R_SPARC_DISP16: (Symbol + Addend - Address)
 745   static inline void
 746   disp16(unsigned char* view,
 747          const Sized_relobj<size, big_endian>* object,
 748          const Symbol_value<size>* psymval,
 749          typename elfcpp::Elf_types<size>::Elf_Addr addend,
 750          typename elfcpp::Elf_types<size>::Elf_Addr address)
 751   {
 752     This::template pcrela_unaligned<16>(view, object, psymval,
 753                                         addend, address);
 754   }
 755
 756   // R_SPARC_DISP32: (Symbol + Addend - Address)
 757   static inline void
 758   disp32(unsigned char* view,
 759          const Sized_relobj<size, big_endian>* object,
 760          const Symbol_value<size>* psymval,
 761          typename elfcpp::Elf_types<size>::Elf_Addr addend,
 762          typename elfcpp::Elf_types<size>::Elf_Addr address)
 763   {
 764     This::template pcrela_unaligned<32>(view, object, psymval,
 765                                         addend, address);
 766   }
 767
 768   // R_SPARC_DISP64: (Symbol + Addend - Address)
 769   static inline void
 770   disp64(unsigned char* view,
 771          const Sized_relobj<size, big_endian>* object,
 772          const Symbol_value<size>* psymval,
 773          elfcpp::Elf_Xword addend,
 774          typename elfcpp::Elf_types<size>::Elf_Addr address)
 775   {
 776     This::template pcrela_unaligned<64>(view, object, psymval,
 777                                         addend, address);
 778   }
 779
 780   // R_SPARC_H44: (Symbol + Addend) >> 22
 781   static inline void
 782   h44(unsigned char* view,
 783       const Sized_relobj<size, big_endian>* object,
 784       const Symbol_value<size>* psymval,
 785       typename elfcpp::Elf_types<size>::Elf_Addr  addend)
 786   {
 787     This_insn::template rela<32>(view, 22, 0x003fffff, object, psymval, addend);
 788   }
 789
 790   // R_SPARC_M44: ((Symbol + Addend) >> 12) & 0x3ff
 791   static inline void
 792   m44(unsigned char* view,
 793       const Sized_relobj<size, big_endian>* object,
 794       const Symbol_value<size>* psymval,
 795       typename elfcpp::Elf_types<size>::Elf_Addr  addend)
 796   {
 797     This_insn::template rela<32>(view, 12, 0x000003ff, object, psymval, addend);
 798   }
 799
 800   // R_SPARC_L44: (Symbol + Addend) & 0xfff
 801   static inline void
 802   l44(unsigned char* view,
 803       const Sized_relobj<size, big_endian>* object,
 804       const Symbol_value<size>* psymval,
 805       typename elfcpp::Elf_types<size>::Elf_Addr  addend)
 806   {
 807     This_insn::template rela<32>(view, 0, 0x00000fff, object, psymval, addend);
 808   }
 809
 810   // R_SPARC_HH22: (Symbol + Addend) >> 42
 811   static inline void
 812   hh22(unsigned char* view,
 813        const Sized_relobj<size, big_endian>* object,
 814        const Symbol_value<size>* psymval,
 815        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 816   {
 817     This_insn::template rela<32>(view, 42, 0x003fffff, object, psymval, addend);
 818   }
 819
 820   // R_SPARC_PC_HH22: (Symbol + Addend - Address) >> 42
 821   static inline void
 822   pc_hh22(unsigned char* view,
 823           const Sized_relobj<size, big_endian>* object,
 824           const Symbol_value<size>* psymval,
 825           typename elfcpp::Elf_types<size>::Elf_Addr addend,
 826           typename elfcpp::Elf_types<size>::Elf_Addr address)
 827   {
 828     This_insn::template pcrela<32>(view, 42, 0x003fffff, object,
 829                                    psymval, addend, address);
 830   }
 831
 832   // R_SPARC_HM10: ((Symbol + Addend) >> 32) & 0x3ff
 833   static inline void
 834   hm10(unsigned char* view,
 835        const Sized_relobj<size, big_endian>* object,
 836        const Symbol_value<size>* psymval,
 837        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 838   {
 839     This_insn::template rela<32>(view, 32, 0x000003ff, object, psymval, addend);
 840   }
 841
 842   // R_SPARC_PC_HM10: ((Symbol + Addend - Address) >> 32) & 0x3ff
 843   static inline void
 844   pc_hm10(unsigned char* view,
 845           const Sized_relobj<size, big_endian>* object,
 846           const Symbol_value<size>* psymval,
 847           typename elfcpp::Elf_types<size>::Elf_Addr addend,
 848           typename elfcpp::Elf_types<size>::Elf_Addr address)
 849   {
 850     This_insn::template pcrela<32>(view, 32, 0x000003ff, object,
 851                                    psymval, addend, address);
 852   }
 853
 854   // R_SPARC_11: (Symbol + Addend)
 855   static inline void
 856   rela32_11(unsigned char* view,
 857             const Sized_relobj<size, big_endian>* object,
 858             const Symbol_value<size>* psymval,
 859             typename elfcpp::Elf_types<size>::Elf_Addr addend)
 860   {
 861     This_insn::template rela<32>(view, 0, 0x000007ff, object, psymval, addend);
 862   }
 863
 864   // R_SPARC_10: (Symbol + Addend)
 865   static inline void
 866   rela32_10(unsigned char* view,
 867             const Sized_relobj<size, big_endian>* object,
 868             const Symbol_value<size>* psymval,
 869             typename elfcpp::Elf_types<size>::Elf_Addr addend)
 870   {
 871     This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend);
 872   }
 873
 874   // R_SPARC_7: (Symbol + Addend)
 875   static inline void
 876   rela32_7(unsigned char* view,
 877            const Sized_relobj<size, big_endian>* object,
 878            const Symbol_value<size>* psymval,
 879            typename elfcpp::Elf_types<size>::Elf_Addr addend)
 880   {
 881     This_insn::template rela<32>(view, 0, 0x0000007f, object, psymval, addend);
 882   }
 883
 884   // R_SPARC_6: (Symbol + Addend)
 885   static inline void
 886   rela32_6(unsigned char* view,
 887            const Sized_relobj<size, big_endian>* object,
 888            const Symbol_value<size>* psymval,
 889            typename elfcpp::Elf_types<size>::Elf_Addr addend)
 890   {
 891     This_insn::template rela<32>(view, 0, 0x0000003f, object, psymval, addend);
 892   }
 893
 894   // R_SPARC_5: (Symbol + Addend)
 895   static inline void
 896   rela32_5(unsigned char* view,
 897            const Sized_relobj<size, big_endian>* object,
 898            const Symbol_value<size>* psymval,
 899            typename elfcpp::Elf_types<size>::Elf_Addr addend)
 900   {
 901     This_insn::template rela<32>(view, 0, 0x0000001f, object, psymval, addend);
 902   }
 903
 904   // R_SPARC_TLS_LDO_HIX22: @dtpoff(Symbol + Addend) >> 10
 905   static inline void
 906   ldo_hix22(unsigned char* view,
 907             typename elfcpp::Elf_types<size>::Elf_Addr avalue,
 908             typename elfcpp::Elf_types<size>::Elf_Addr addend)
 909   {
 910     This_insn::hi22(view, avalue, addend);
 911   }
 912
 913   // R_SPARC_TLS_LDO_LOX10: @dtpoff(Symbol + Addend) & 0x3ff
 914   static inline void
 915   ldo_lox10(unsigned char* view,
 916             typename elfcpp::Elf_types<size>::Elf_Addr avalue,
 917             typename elfcpp::Elf_types<size>::Elf_Addr addend)
 918   {
 919     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
 920     Valtype* wv = reinterpret_cast<Valtype*>(view);
 921     Valtype val = elfcpp::Swap<32, true>::readval(wv);
 922     Valtype reloc = (avalue + addend);
 923
 924     val &= ~0x1fff;
 925     reloc &= 0x3ff;
 926
 927     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
 928   }
 929
 930   // R_SPARC_TLS_LE_HIX22: (@tpoff(Symbol + Addend) ^ 0xffffffffffffffff) >> 10
 931   static inline void
 932   hix22(unsigned char* view,
 933         typename elfcpp::Elf_types<size>::Elf_Addr avalue,
 934         typename elfcpp::Elf_types<size>::Elf_Addr addend)
 935   {
 936     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
 937     Valtype* wv = reinterpret_cast<Valtype*>(view);
 938     Valtype val = elfcpp::Swap<32, true>::readval(wv);
 939     Valtype reloc = (avalue + addend);
 940
 941     val &= ~0x3fffff;
 942
 943     reloc ^= ~(Valtype)0;
 944     reloc >>= 10;
 945
 946     reloc &= 0x3fffff;
 947
 948     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
 949   }
 950
 951   // R_SPARC_HIX22: ((Symbol + Addend) ^ 0xffffffffffffffff) >> 10
 952   static inline void
 953   hix22(unsigned char* view,
 954         const Sized_relobj<size, big_endian>* object,
 955         const Symbol_value<size>* psymval,
 956         typename elfcpp::Elf_types<size>::Elf_Addr addend)
 957   {
 958     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
 959     Valtype* wv = reinterpret_cast<Valtype*>(view);
 960     Valtype val = elfcpp::Swap<32, true>::readval(wv);
 961     Valtype reloc = psymval->value(object, addend);
 962
 963     val &= ~0x3fffff;
 964
 965     reloc ^= ~(Valtype)0;
 966     reloc >>= 10;
 967
 968     reloc &= 0x3fffff;
 969
 970     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
 971   }
 972
 973
 974   // R_SPARC_TLS_LE_LOX10: (@tpoff(Symbol + Addend) & 0x3ff) | 0x1c00
 975   static inline void
 976   lox10(unsigned char* view,
 977         typename elfcpp::Elf_types<size>::Elf_Addr avalue,
 978         typename elfcpp::Elf_types<size>::Elf_Addr addend)
 979   {
 980     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
 981     Valtype* wv = reinterpret_cast<Valtype*>(view);
 982     Valtype val = elfcpp::Swap<32, true>::readval(wv);
 983     Valtype reloc = (avalue + addend);
 984
 985     val &= ~0x1fff;
 986     reloc &= 0x3ff;
 987     reloc |= 0x1c00;
 988
 989     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
 990   }
 991
 992   // R_SPARC_LOX10: ((Symbol + Addend) & 0x3ff) | 0x1c00
 993   static inline void
 994   lox10(unsigned char* view,
 995         const Sized_relobj<size, big_endian>* object,
 996         const Symbol_value<size>* psymval,
 997         typename elfcpp::Elf_types<size>::Elf_Addr addend)
 998   {
 999     typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
1000     Valtype* wv = reinterpret_cast<Valtype*>(view);
1001     Valtype val = elfcpp::Swap<32, true>::readval(wv);
1002     Valtype reloc = psymval->value(object, addend);
1003
1004     val &= ~0x1fff;
1005     reloc &= 0x3ff;
1006     reloc |= 0x1c00;
1007
1008     elfcpp::Swap<32, true>::writeval(wv, val | reloc);
1009   }
1010 };
1011
1012 // Get the GOT section, creating it if necessary.
1013
1014 template<int size, bool big_endian>
1015 Output_data_got<size, big_endian>*
1016 Target_sparc<size, big_endian>::got_section(Symbol_table* symtab,
1017                                             Layout* layout)
1018 {
1019   if (this->got_ == NULL)
1020     {
1021       gold_assert(symtab != NULL && layout != NULL);
1022
1023       this->got_ = new Output_data_got<size, big_endian>();
1024
1025       Output_section* os;
1026       os = layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS,
1027                                            (elfcpp::SHF_ALLOC
1028                                             | elfcpp::SHF_WRITE),
1029                                            this->got_, false);
1030       os->set_is_relro();
1031
1032       // Define _GLOBAL_OFFSET_TABLE_ at the start of the .got section.
1033       symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL,
1034                                     this->got_,
1035                                     0, 0, elfcpp::STT_OBJECT,
1036                                     elfcpp::STB_LOCAL,
1037                                     elfcpp::STV_HIDDEN, 0,
1038                                     false, false);
1039     }
1040
1041   return this->got_;
1042 }
1043
1044 // Get the dynamic reloc section, creating it if necessary.
1045
1046 template<int size, bool big_endian>
1047 typename Target_sparc<size, big_endian>::Reloc_section*
1048 Target_sparc<size, big_endian>::rela_dyn_section(Layout* layout)
1049 {
1050   if (this->rela_dyn_ == NULL)
1051     {
1052       gold_assert(layout != NULL);
1053       this->rela_dyn_ = new Reloc_section(parameters->options().combreloc());
1054       layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA,
1055                                       elfcpp::SHF_ALLOC, this->rela_dyn_, true);
1056     }
1057   return this->rela_dyn_;
1058 }
1059
1060 // A class to handle the PLT data.
1061
1062 template<int size, bool big_endian>
1063 class Output_data_plt_sparc : public Output_section_data
1064 {
1065  public:
1066   typedef Output_data_reloc<elfcpp::SHT_RELA, true,
1067                             size, big_endian> Reloc_section;
1068
1069   Output_data_plt_sparc(Layout*);
1070
1071   // Add an entry to the PLT.
1072   void add_entry(Symbol* gsym);
1073
1074   // Return the .rela.plt section data.
1075   const Reloc_section* rel_plt() const
1076   {
1077     return this->rel_;
1078   }
1079
1080  protected:
1081   void do_adjust_output_section(Output_section* os);
1082
1083   // Write to a map file.
1084   void
1085   do_print_to_mapfile(Mapfile* mapfile) const
1086   { mapfile->print_output_data(this, _("** PLT")); }
1087
1088  private:
1089   // The size of an entry in the PLT.
1090   static const int base_plt_entry_size = (size == 32 ? 12 : 32);
1091
1092   static const unsigned int plt_entries_per_block = 160;
1093   static const unsigned int plt_insn_chunk_size = 24;
1094   static const unsigned int plt_pointer_chunk_size = 8;
1095   static const unsigned int plt_block_size =
1096     (plt_entries_per_block
1097      * (plt_insn_chunk_size + plt_pointer_chunk_size));
1098
1099   // Set the final size.
1100   void
1101   set_final_data_size()
1102   {
1103     unsigned int full_count = this->count_ + 4;
1104     unsigned int extra = (size == 32 ? 4 : 0);
1105
1106     if (size == 32 || full_count < 32768)
1107       this->set_data_size((full_count * base_plt_entry_size) + extra);
1108     else
1109       {
1110         unsigned int ext_cnt = full_count - 32768;
1111
1112         this->set_data_size((32768 * base_plt_entry_size)
1113                             + (ext_cnt
1114                                * (plt_insn_chunk_size
1115                                   + plt_pointer_chunk_size)));
1116       }
1117   }
1118
1119   // Write out the PLT data.
1120   void
1121   do_write(Output_file*);
1122
1123   // The reloc section.
1124   Reloc_section* rel_;
1125   // The number of PLT entries.
1126   unsigned int count_;
1127 };
1128
1129 // Define the constants as required by C++ standard.
1130
1131 template<int size, bool big_endian>
1132 const int Output_data_plt_sparc<size, big_endian>::base_plt_entry_size;
1133
1134 template<int size, bool big_endian>
1135 const unsigned int
1136 Output_data_plt_sparc<size, big_endian>::plt_entries_per_block;
1137
1138 template<int size, bool big_endian>
1139 const unsigned int Output_data_plt_sparc<size, big_endian>::plt_insn_chunk_size;
1140
1141 template<int size, bool big_endian>
1142 const unsigned int
1143 Output_data_plt_sparc<size, big_endian>::plt_pointer_chunk_size;
1144
1145 template<int size, bool big_endian>
1146 const unsigned int Output_data_plt_sparc<size, big_endian>::plt_block_size;
1147
1148 // Create the PLT section.  The ordinary .got section is an argument,
1149 // since we need to refer to the start.
1150
1151 template<int size, bool big_endian>
1152 Output_data_plt_sparc<size, big_endian>::Output_data_plt_sparc(Layout* layout)
1153   : Output_section_data(size == 32 ? 4 : 8), count_(0)
1154 {
1155   this->rel_ = new Reloc_section(false);
1156   layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA,
1157                                   elfcpp::SHF_ALLOC, this->rel_, true);
1158 }
1159
1160 template<int size, bool big_endian>
1161 void
1162 Output_data_plt_sparc<size, big_endian>::do_adjust_output_section(Output_section* os)
1163 {
1164   os->set_entsize(0);
1165 }
1166
1167 // Add an entry to the PLT.
1168
1169 template<int size, bool big_endian>
1170 void
1171 Output_data_plt_sparc<size, big_endian>::add_entry(Symbol* gsym)
1172 {
1173   gold_assert(!gsym->has_plt_offset());
1174
1175   unsigned int index = this->count_ + 4;
1176   section_offset_type plt_offset;
1177
1178   if (size == 32 || index < 32768)
1179     plt_offset = index * base_plt_entry_size;
1180   else
1181     {
1182         unsigned int ext_index = index - 32768;
1183
1184         plt_offset = (32768 * base_plt_entry_size)
1185           + ((ext_index / plt_entries_per_block)
1186              * plt_block_size)
1187           + ((ext_index % plt_entries_per_block)
1188              * plt_insn_chunk_size);
1189     }
1190
1191   gsym->set_plt_offset(plt_offset);
1192
1193   ++this->count_;
1194
1195   // Every PLT entry needs a reloc.
1196   gsym->set_needs_dynsym_entry();
1197   this->rel_->add_global(gsym, elfcpp::R_SPARC_JMP_SLOT, this,
1198                          plt_offset, 0);
1199
1200   // Note that we don't need to save the symbol.  The contents of the
1201   // PLT are independent of which symbols are used.  The symbols only
1202   // appear in the relocations.
1203 }
1204
1205 static const unsigned int sparc_nop = 0x01000000;
1206 static const unsigned int sparc_sethi_g1 = 0x03000000;
1207 static const unsigned int sparc_branch_always = 0x30800000;
1208 static const unsigned int sparc_branch_always_pt = 0x30680000;
1209 static const unsigned int sparc_mov = 0x80100000;
1210 static const unsigned int sparc_mov_g0_o0 = 0x90100000;
1211 static const unsigned int sparc_mov_o7_g5 = 0x8a10000f;
1212 static const unsigned int sparc_call_plus_8 = 0x40000002;
1213 static const unsigned int sparc_ldx_o7_imm_g1 = 0xc25be000;
1214 static const unsigned int sparc_jmpl_o7_g1_g1 = 0x83c3c001;
1215 static const unsigned int sparc_mov_g5_o7 = 0x9e100005;
1216
1217 // Write out the PLT.
1218
1219 template<int size, bool big_endian>
1220 void
1221 Output_data_plt_sparc<size, big_endian>::do_write(Output_file* of)
1222 {
1223   const off_t off = this->offset();
1224   const section_size_type oview_size =
1225     convert_to_section_size_type(this->data_size());
1226   unsigned char* const oview = of->get_output_view(off, oview_size);
1227   unsigned char* pov = oview;
1228
1229   memset(pov, 0, base_plt_entry_size * 4);
1230   pov += base_plt_entry_size * 4;
1231
1232   unsigned int plt_offset = base_plt_entry_size * 4;
1233   const unsigned int count = this->count_;
1234
1235   if (size == 64)
1236     {
1237       unsigned int limit;
1238
1239       limit = (count > 32768 ? 32768 : count);
1240
1241       for (unsigned int i = 0; i < limit; ++i)
1242         {
1243           elfcpp::Swap<32, true>::writeval(pov + 0x00,
1244                                            sparc_sethi_g1 + plt_offset);
1245           elfcpp::Swap<32, true>::writeval(pov + 0x04,
1246                                            sparc_branch_always_pt +
1247                                            (((base_plt_entry_size -
1248                                               (plt_offset + 4)) >> 2) &
1249                                             0x7ffff));
1250           elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop);
1251           elfcpp::Swap<32, true>::writeval(pov + 0x0c, sparc_nop);
1252           elfcpp::Swap<32, true>::writeval(pov + 0x10, sparc_nop);
1253           elfcpp::Swap<32, true>::writeval(pov + 0x14, sparc_nop);
1254           elfcpp::Swap<32, true>::writeval(pov + 0x18, sparc_nop);
1255           elfcpp::Swap<32, true>::writeval(pov + 0x1c, sparc_nop);
1256
1257           pov += base_plt_entry_size;
1258           plt_offset += base_plt_entry_size;
1259         }
1260
1261       if (count > 32768)
1262         {
1263           unsigned int ext_cnt = count - 32768;
1264           unsigned int blks = ext_cnt / plt_entries_per_block;
1265
1266           for (unsigned int i = 0; i < blks; ++i)
1267             {
1268               unsigned int data_off = (plt_entries_per_block
1269                                        * plt_insn_chunk_size) - 4;
1270
1271               for (unsigned int j = 0; j < plt_entries_per_block; ++j)
1272                 {
1273                   elfcpp::Swap<32, true>::writeval(pov + 0x00,
1274                                                    sparc_mov_o7_g5);
1275                   elfcpp::Swap<32, true>::writeval(pov + 0x04,
1276                                                    sparc_call_plus_8);
1277                   elfcpp::Swap<32, true>::writeval(pov + 0x08,
1278                                                    sparc_nop);
1279                   elfcpp::Swap<32, true>::writeval(pov + 0x0c,
1280                                                    sparc_ldx_o7_imm_g1 +
1281                                                    (data_off & 0x1fff));
1282                   elfcpp::Swap<32, true>::writeval(pov + 0x10,
1283                                                    sparc_jmpl_o7_g1_g1);
1284                   elfcpp::Swap<32, true>::writeval(pov + 0x14,
1285                                                    sparc_mov_g5_o7);
1286
1287                   elfcpp::Swap<64, big_endian>::writeval(
1288                                 pov + 0x4 + data_off,
1289                                 (elfcpp::Elf_Xword) (oview - (pov + 0x04)));
1290
1291                   pov += plt_insn_chunk_size;
1292                   data_off -= 16;
1293                 }
1294             }
1295
1296           unsigned int sub_blk_cnt = ext_cnt % plt_entries_per_block;
1297           for (unsigned int i = 0; i < sub_blk_cnt; ++i)
1298             {
1299               unsigned int data_off = (sub_blk_cnt
1300                                        * plt_insn_chunk_size) - 4;
1301
1302               for (unsigned int j = 0; j < plt_entries_per_block; ++j)
1303                 {
1304                   elfcpp::Swap<32, true>::writeval(pov + 0x00,
1305                                                    sparc_mov_o7_g5);
1306                   elfcpp::Swap<32, true>::writeval(pov + 0x04,
1307                                                    sparc_call_plus_8);
1308                   elfcpp::Swap<32, true>::writeval(pov + 0x08,
1309                                                    sparc_nop);
1310                   elfcpp::Swap<32, true>::writeval(pov + 0x0c,
1311                                                    sparc_ldx_o7_imm_g1 +
1312                                                    (data_off & 0x1fff));
1313                   elfcpp::Swap<32, true>::writeval(pov + 0x10,
1314                                                    sparc_jmpl_o7_g1_g1);
1315                   elfcpp::Swap<32, true>::writeval(pov + 0x14,
1316                                                    sparc_mov_g5_o7);
1317
1318                   elfcpp::Swap<64, big_endian>::writeval(
1319                                 pov + 0x4 + data_off,
1320                                 (elfcpp::Elf_Xword) (oview - (pov + 0x04)));
1321
1322                   pov += plt_insn_chunk_size;
1323                   data_off -= 16;
1324                 }
1325             }
1326         }
1327     }
1328   else
1329     {
1330       for (unsigned int i = 0; i < count; ++i)
1331         {
1332           elfcpp::Swap<32, true>::writeval(pov + 0x00,
1333                                            sparc_sethi_g1 + plt_offset);
1334           elfcpp::Swap<32, true>::writeval(pov + 0x04,
1335                                            sparc_branch_always +
1336                                            (((- (plt_offset + 4)) >> 2) &
1337                                             0x003fffff));
1338           elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop);
1339
1340           pov += base_plt_entry_size;
1341           plt_offset += base_plt_entry_size;
1342         }
1343
1344       elfcpp::Swap<32, true>::writeval(pov, sparc_nop);
1345       pov += 4;
1346     }
1347
1348   gold_assert(static_cast<section_size_type>(pov - oview) == oview_size);
1349
1350   of->write_output_view(off, oview_size, oview);
1351 }
1352
1353 // Create a PLT entry for a global symbol.
1354
1355 template<int size, bool big_endian>
1356 void
1357 Target_sparc<size, big_endian>::make_plt_entry(Symbol_table* symtab,
1358                                                Layout* layout,
1359                                                Symbol* gsym)
1360 {
1361   if (gsym->has_plt_offset())
1362     return;
1363
1364   if (this->plt_ == NULL)
1365     {
1366       // Create the GOT sections first.
1367       this->got_section(symtab, layout);
1368
1369       this->plt_ = new Output_data_plt_sparc<size, big_endian>(layout);
1370       layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS,
1371                                       (elfcpp::SHF_ALLOC
1372                                        | elfcpp::SHF_EXECINSTR
1373                                        | elfcpp::SHF_WRITE),
1374                                       this->plt_, false);
1375
1376       // Define _PROCEDURE_LINKAGE_TABLE_ at the start of the .plt section.
1377       symtab->define_in_output_data("_PROCEDURE_LINKAGE_TABLE_", NULL,
1378                                     this->plt_,
1379                                     0, 0, elfcpp::STT_OBJECT,
1380                                     elfcpp::STB_LOCAL,
1381                                     elfcpp::STV_HIDDEN, 0,
1382                                     false, false);
1383     }
1384
1385   this->plt_->add_entry(gsym);
1386 }
1387
1388 // Create a GOT entry for the TLS module index.
1389
1390 template<int size, bool big_endian>
1391 unsigned int
1392 Target_sparc<size, big_endian>::got_mod_index_entry(Symbol_table* symtab,
1393                                                     Layout* layout,
1394                                                     Sized_relobj<size, big_endian>* object)
1395 {
1396   if (this->got_mod_index_offset_ == -1U)
1397     {
1398       gold_assert(symtab != NULL && layout != NULL && object != NULL);
1399       Reloc_section* rela_dyn = this->rela_dyn_section(layout);
1400       Output_data_got<size, big_endian>* got;
1401       unsigned int got_offset;
1402
1403       got = this->got_section(symtab, layout);
1404       got_offset = got->add_constant(0);
1405       rela_dyn->add_local(object, 0,
1406                           (size == 64 ?
1407                            elfcpp::R_SPARC_TLS_DTPMOD64 :
1408                            elfcpp::R_SPARC_TLS_DTPMOD32), got,
1409                           got_offset, 0);
1410       got->add_constant(0);
1411       this->got_mod_index_offset_ = got_offset;
1412     }
1413   return this->got_mod_index_offset_;
1414 }
1415
1416 // Optimize the TLS relocation type based on what we know about the
1417 // symbol.  IS_FINAL is true if the final address of this symbol is
1418 // known at link time.
1419
1420 static tls::Tls_optimization
1421 optimize_tls_reloc(bool is_final, int r_type)
1422 {
1423   // If we are generating a shared library, then we can't do anything
1424   // in the linker.
1425   if (parameters->options().shared())
1426     return tls::TLSOPT_NONE;
1427
1428   switch (r_type)
1429     {
1430     case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1431     case elfcpp::R_SPARC_TLS_GD_LO10:
1432     case elfcpp::R_SPARC_TLS_GD_ADD:
1433     case elfcpp::R_SPARC_TLS_GD_CALL:
1434       // These are General-Dynamic which permits fully general TLS
1435       // access.  Since we know that we are generating an executable,
1436       // we can convert this to Initial-Exec.  If we also know that
1437       // this is a local symbol, we can further switch to Local-Exec.
1438       if (is_final)
1439         return tls::TLSOPT_TO_LE;
1440       return tls::TLSOPT_TO_IE;
1441
1442     case elfcpp::R_SPARC_TLS_LDM_HI22:  // Local-dynamic
1443     case elfcpp::R_SPARC_TLS_LDM_LO10:
1444     case elfcpp::R_SPARC_TLS_LDM_ADD:
1445     case elfcpp::R_SPARC_TLS_LDM_CALL:
1446       // This is Local-Dynamic, which refers to a local symbol in the
1447       // dynamic TLS block.  Since we know that we generating an
1448       // executable, we can switch to Local-Exec.
1449       return tls::TLSOPT_TO_LE;
1450
1451     case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
1452     case elfcpp::R_SPARC_TLS_LDO_LOX10:
1453     case elfcpp::R_SPARC_TLS_LDO_ADD:
1454       // Another type of Local-Dynamic relocation.
1455       return tls::TLSOPT_TO_LE;
1456
1457     case elfcpp::R_SPARC_TLS_IE_HI22:   // Initial-exec
1458     case elfcpp::R_SPARC_TLS_IE_LO10:
1459     case elfcpp::R_SPARC_TLS_IE_LD:
1460     case elfcpp::R_SPARC_TLS_IE_LDX:
1461     case elfcpp::R_SPARC_TLS_IE_ADD:
1462       // These are Initial-Exec relocs which get the thread offset
1463       // from the GOT.  If we know that we are linking against the
1464       // local symbol, we can switch to Local-Exec, which links the
1465       // thread offset into the instruction.
1466       if (is_final)
1467         return tls::TLSOPT_TO_LE;
1468       return tls::TLSOPT_NONE;
1469
1470     case elfcpp::R_SPARC_TLS_LE_HIX22:  // Local-exec
1471     case elfcpp::R_SPARC_TLS_LE_LOX10:
1472       // When we already have Local-Exec, there is nothing further we
1473       // can do.
1474       return tls::TLSOPT_NONE;
1475
1476     default:
1477       gold_unreachable();
1478     }
1479 }
1480
1481 // Generate a PLT entry slot for a call to __tls_get_addr
1482 template<int size, bool big_endian>
1483 void
1484 Target_sparc<size, big_endian>::Scan::generate_tls_call(Symbol_table* symtab,
1485                                                         Layout* layout,
1486                                                         Target_sparc<size, big_endian>* target)
1487 {
1488   Symbol* gsym = target->tls_get_addr_sym(symtab);
1489
1490   target->make_plt_entry(symtab, layout, gsym);
1491 }
1492
1493 // Report an unsupported relocation against a local symbol.
1494
1495 template<int size, bool big_endian>
1496 void
1497 Target_sparc<size, big_endian>::Scan::unsupported_reloc_local(
1498                         Sized_relobj<size, big_endian>* object,
1499                         unsigned int r_type)
1500 {
1501   gold_error(_("%s: unsupported reloc %u against local symbol"),
1502              object->name().c_str(), r_type);
1503 }
1504
1505 // We are about to emit a dynamic relocation of type R_TYPE.  If the
1506 // dynamic linker does not support it, issue an error.
1507
1508 template<int size, bool big_endian>
1509 void
1510 Target_sparc<size, big_endian>::Scan::check_non_pic(Relobj* object, unsigned int r_type)
1511 {
1512   gold_assert(r_type != elfcpp::R_SPARC_NONE);
1513
1514   if (size == 64)
1515     {
1516       switch (r_type)
1517         {
1518           // These are the relocation types supported by glibc for sparc 64-bit.
1519         case elfcpp::R_SPARC_RELATIVE:
1520         case elfcpp::R_SPARC_COPY:
1521         case elfcpp::R_SPARC_64:
1522         case elfcpp::R_SPARC_GLOB_DAT:
1523         case elfcpp::R_SPARC_JMP_SLOT:
1524         case elfcpp::R_SPARC_TLS_DTPMOD64:
1525         case elfcpp::R_SPARC_TLS_DTPOFF64:
1526         case elfcpp::R_SPARC_TLS_TPOFF64:
1527         case elfcpp::R_SPARC_TLS_LE_HIX22:
1528         case elfcpp::R_SPARC_TLS_LE_LOX10:
1529         case elfcpp::R_SPARC_8:
1530         case elfcpp::R_SPARC_16:
1531         case elfcpp::R_SPARC_DISP8:
1532         case elfcpp::R_SPARC_DISP16:
1533         case elfcpp::R_SPARC_DISP32:
1534         case elfcpp::R_SPARC_WDISP30:
1535         case elfcpp::R_SPARC_LO10:
1536         case elfcpp::R_SPARC_HI22:
1537         case elfcpp::R_SPARC_OLO10:
1538         case elfcpp::R_SPARC_H44:
1539         case elfcpp::R_SPARC_M44:
1540         case elfcpp::R_SPARC_L44:
1541         case elfcpp::R_SPARC_HH22:
1542         case elfcpp::R_SPARC_HM10:
1543         case elfcpp::R_SPARC_LM22:
1544         case elfcpp::R_SPARC_UA16:
1545         case elfcpp::R_SPARC_UA32:
1546         case elfcpp::R_SPARC_UA64:
1547           return;
1548
1549         default:
1550           break;
1551         }
1552     }
1553   else
1554     {
1555       switch (r_type)
1556         {
1557           // These are the relocation types supported by glibc for sparc 32-bit.
1558         case elfcpp::R_SPARC_RELATIVE:
1559         case elfcpp::R_SPARC_COPY:
1560         case elfcpp::R_SPARC_GLOB_DAT:
1561         case elfcpp::R_SPARC_32:
1562         case elfcpp::R_SPARC_JMP_SLOT:
1563         case elfcpp::R_SPARC_TLS_DTPMOD32:
1564         case elfcpp::R_SPARC_TLS_DTPOFF32:
1565         case elfcpp::R_SPARC_TLS_TPOFF32:
1566         case elfcpp::R_SPARC_TLS_LE_HIX22:
1567         case elfcpp::R_SPARC_TLS_LE_LOX10:
1568         case elfcpp::R_SPARC_8:
1569         case elfcpp::R_SPARC_16:
1570         case elfcpp::R_SPARC_DISP8:
1571         case elfcpp::R_SPARC_DISP16:
1572         case elfcpp::R_SPARC_DISP32:
1573         case elfcpp::R_SPARC_LO10:
1574         case elfcpp::R_SPARC_WDISP30:
1575         case elfcpp::R_SPARC_HI22:
1576         case elfcpp::R_SPARC_UA16:
1577         case elfcpp::R_SPARC_UA32:
1578           return;
1579
1580         default:
1581           break;
1582         }
1583     }
1584
1585   // This prevents us from issuing more than one error per reloc
1586   // section.  But we can still wind up issuing more than one
1587   // error per object file.
1588   if (this->issued_non_pic_error_)
1589     return;
1590   gold_assert(parameters->options().output_is_position_independent());
1591   object->error(_("requires unsupported dynamic reloc; "
1592                   "recompile with -fPIC"));
1593   this->issued_non_pic_error_ = true;
1594   return;
1595 }
1596
1597 // Scan a relocation for a local symbol.
1598
1599 template<int size, bool big_endian>
1600 inline void
1601 Target_sparc<size, big_endian>::Scan::local(
1602                         Symbol_table* symtab,
1603                         Layout* layout,
1604                         Target_sparc<size, big_endian>* target,
1605                         Sized_relobj<size, big_endian>* object,
1606                         unsigned int data_shndx,
1607                         Output_section* output_section,
1608                         const elfcpp::Rela<size, big_endian>& reloc,
1609                         unsigned int r_type,
1610                         const elfcpp::Sym<size, big_endian>& lsym)
1611 {
1612   unsigned int orig_r_type = r_type;
1613
1614   r_type &= 0xff;
1615   switch (r_type)
1616     {
1617     case elfcpp::R_SPARC_NONE:
1618     case elfcpp::R_SPARC_REGISTER:
1619     case elfcpp::R_SPARC_GNU_VTINHERIT:
1620     case elfcpp::R_SPARC_GNU_VTENTRY:
1621       break;
1622
1623     case elfcpp::R_SPARC_64:
1624     case elfcpp::R_SPARC_32:
1625       // If building a shared library (or a position-independent
1626       // executable), we need to create a dynamic relocation for
1627       // this location. The relocation applied at link time will
1628       // apply the link-time value, so we flag the location with
1629       // an R_SPARC_RELATIVE relocation so the dynamic loader can
1630       // relocate it easily.
1631       if (parameters->options().output_is_position_independent())
1632         {
1633           Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1634           unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1635           rela_dyn->add_local_relative(object, r_sym, elfcpp::R_SPARC_RELATIVE,
1636                                        output_section, data_shndx,
1637                                        reloc.get_r_offset(),
1638                                        reloc.get_r_addend());
1639         }
1640       break;
1641
1642     case elfcpp::R_SPARC_HIX22:
1643     case elfcpp::R_SPARC_LOX10:
1644     case elfcpp::R_SPARC_H44:
1645     case elfcpp::R_SPARC_M44:
1646     case elfcpp::R_SPARC_L44:
1647     case elfcpp::R_SPARC_HH22:
1648     case elfcpp::R_SPARC_HM10:
1649     case elfcpp::R_SPARC_LM22:
1650     case elfcpp::R_SPARC_UA64:
1651     case elfcpp::R_SPARC_UA32:
1652     case elfcpp::R_SPARC_UA16:
1653     case elfcpp::R_SPARC_HI22:
1654     case elfcpp::R_SPARC_LO10:
1655     case elfcpp::R_SPARC_OLO10:
1656     case elfcpp::R_SPARC_16:
1657     case elfcpp::R_SPARC_11:
1658     case elfcpp::R_SPARC_10:
1659     case elfcpp::R_SPARC_8:
1660     case elfcpp::R_SPARC_7:
1661     case elfcpp::R_SPARC_6:
1662     case elfcpp::R_SPARC_5:
1663       // If building a shared library (or a position-independent
1664       // executable), we need to create a dynamic relocation for
1665       // this location.
1666       if (parameters->options().output_is_position_independent())
1667         {
1668           Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1669
1670           check_non_pic(object, r_type);
1671           if (lsym.get_st_type() != elfcpp::STT_SECTION)
1672             {
1673               unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1674               rela_dyn->add_local(object, r_sym, orig_r_type, output_section,
1675                                   data_shndx, reloc.get_r_offset(),
1676                                   reloc.get_r_addend());
1677             }
1678           else
1679             {
1680               unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1681               gold_assert(lsym.get_st_value() == 0);
1682               rela_dyn->add_local_relative(object, r_sym, orig_r_type,
1683                                            output_section, data_shndx,
1684                                            reloc.get_r_offset(),
1685                                            reloc.get_r_addend());
1686             }
1687         }
1688       break;
1689
1690     case elfcpp::R_SPARC_WDISP30:
1691     case elfcpp::R_SPARC_WDISP22:
1692     case elfcpp::R_SPARC_WDISP19:
1693     case elfcpp::R_SPARC_WDISP16:
1694     case elfcpp::R_SPARC_DISP8:
1695     case elfcpp::R_SPARC_DISP16:
1696     case elfcpp::R_SPARC_DISP32:
1697     case elfcpp::R_SPARC_DISP64:
1698     case elfcpp::R_SPARC_PC10:
1699     case elfcpp::R_SPARC_PC22:
1700       break;
1701
1702     case elfcpp::R_SPARC_GOT10:
1703     case elfcpp::R_SPARC_GOT13:
1704     case elfcpp::R_SPARC_GOT22:
1705       {
1706         // The symbol requires a GOT entry.
1707         Output_data_got<size, big_endian>* got;
1708         unsigned int r_sym;
1709
1710         got = target->got_section(symtab, layout);
1711         r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1712
1713         // If we are generating a shared object, we need to add a
1714         // dynamic relocation for this symbol's GOT entry.
1715         if (parameters->options().output_is_position_independent())
1716           {
1717             if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD))
1718               {
1719                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1720                 unsigned int off;
1721
1722                 off = got->add_constant(0);
1723                 object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off);
1724                 rela_dyn->add_local_relative(object, r_sym,
1725                                              elfcpp::R_SPARC_RELATIVE,
1726                                              got, off, 0);
1727               }
1728           }
1729         else
1730           got->add_local(object, r_sym, GOT_TYPE_STANDARD);
1731       }
1732       break;
1733
1734       // These are initial TLS relocs, which are expected when
1735       // linking.
1736     case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1737     case elfcpp::R_SPARC_TLS_GD_LO10:
1738     case elfcpp::R_SPARC_TLS_GD_ADD:
1739     case elfcpp::R_SPARC_TLS_GD_CALL:
1740     case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic
1741     case elfcpp::R_SPARC_TLS_LDM_LO10:
1742     case elfcpp::R_SPARC_TLS_LDM_ADD:
1743     case elfcpp::R_SPARC_TLS_LDM_CALL:
1744     case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
1745     case elfcpp::R_SPARC_TLS_LDO_LOX10:
1746     case elfcpp::R_SPARC_TLS_LDO_ADD:
1747     case elfcpp::R_SPARC_TLS_IE_HI22:   // Initial-exec
1748     case elfcpp::R_SPARC_TLS_IE_LO10:
1749     case elfcpp::R_SPARC_TLS_IE_LD:
1750     case elfcpp::R_SPARC_TLS_IE_LDX:
1751     case elfcpp::R_SPARC_TLS_IE_ADD:
1752     case elfcpp::R_SPARC_TLS_LE_HIX22:  // Local-exec
1753     case elfcpp::R_SPARC_TLS_LE_LOX10:
1754       {
1755         bool output_is_shared = parameters->options().shared();
1756         const tls::Tls_optimization optimized_type
1757             = optimize_tls_reloc(!output_is_shared, r_type);
1758         switch (r_type)
1759           {
1760           case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1761           case elfcpp::R_SPARC_TLS_GD_LO10:
1762           case elfcpp::R_SPARC_TLS_GD_ADD:
1763           case elfcpp::R_SPARC_TLS_GD_CALL:
1764             if (optimized_type == tls::TLSOPT_NONE)
1765               {
1766                 // Create a pair of GOT entries for the module index and
1767                 // dtv-relative offset.
1768                 Output_data_got<size, big_endian>* got
1769                     = target->got_section(symtab, layout);
1770                 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1771                 unsigned int shndx = lsym.get_st_shndx();
1772                 bool is_ordinary;
1773                 shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary);
1774                 if (!is_ordinary)
1775                   object->error(_("local symbol %u has bad shndx %u"),
1776                                 r_sym, shndx);
1777                 else
1778                   got->add_local_pair_with_rela(object, r_sym,
1779                                                 lsym.get_st_shndx(),
1780                                                 GOT_TYPE_TLS_PAIR,
1781                                                 target->rela_dyn_section(layout),
1782                                                 (size == 64
1783                                                  ? elfcpp::R_SPARC_TLS_DTPMOD64
1784                                                  : elfcpp::R_SPARC_TLS_DTPMOD32),
1785                                                  0);
1786                 if (r_type == elfcpp::R_SPARC_TLS_GD_CALL)
1787                   generate_tls_call(symtab, layout, target);
1788               }
1789             else if (optimized_type != tls::TLSOPT_TO_LE)
1790               unsupported_reloc_local(object, r_type);
1791             break;
1792
1793           case elfcpp::R_SPARC_TLS_LDM_HI22 :   // Local-dynamic
1794           case elfcpp::R_SPARC_TLS_LDM_LO10:
1795           case elfcpp::R_SPARC_TLS_LDM_ADD:
1796           case elfcpp::R_SPARC_TLS_LDM_CALL:
1797             if (optimized_type == tls::TLSOPT_NONE)
1798               {
1799                 // Create a GOT entry for the module index.
1800                 target->got_mod_index_entry(symtab, layout, object);
1801
1802                 if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL)
1803                   generate_tls_call(symtab, layout, target);
1804               }
1805             else if (optimized_type != tls::TLSOPT_TO_LE)
1806               unsupported_reloc_local(object, r_type);
1807             break;
1808
1809           case elfcpp::R_SPARC_TLS_LDO_HIX22:   // Alternate local-dynamic
1810           case elfcpp::R_SPARC_TLS_LDO_LOX10:
1811           case elfcpp::R_SPARC_TLS_LDO_ADD:
1812             break;
1813
1814           case elfcpp::R_SPARC_TLS_IE_HI22:     // Initial-exec
1815           case elfcpp::R_SPARC_TLS_IE_LO10:
1816           case elfcpp::R_SPARC_TLS_IE_LD:
1817           case elfcpp::R_SPARC_TLS_IE_LDX:
1818           case elfcpp::R_SPARC_TLS_IE_ADD:
1819             layout->set_has_static_tls();
1820             if (optimized_type == tls::TLSOPT_NONE)
1821               {
1822                 // Create a GOT entry for the tp-relative offset.
1823                 Output_data_got<size, big_endian>* got
1824                   = target->got_section(symtab, layout);
1825                 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1826
1827                 if (!object->local_has_got_offset(r_sym, GOT_TYPE_TLS_OFFSET))
1828                   {
1829                     Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1830                     unsigned int off = got->add_constant(0);
1831
1832                     object->set_local_got_offset(r_sym, GOT_TYPE_TLS_OFFSET,
1833                                                  off);
1834                     rela_dyn->add_local_relative(object, r_sym,
1835                                                  (size == 64 ?
1836                                                   elfcpp::R_SPARC_TLS_TPOFF64 :
1837                                                   elfcpp::R_SPARC_TLS_TPOFF32),
1838                                                  got, off, 0);
1839                   }
1840               }
1841             else if (optimized_type != tls::TLSOPT_TO_LE)
1842               unsupported_reloc_local(object, r_type);
1843             break;
1844
1845           case elfcpp::R_SPARC_TLS_LE_HIX22:    // Local-exec
1846           case elfcpp::R_SPARC_TLS_LE_LOX10:
1847             layout->set_has_static_tls();
1848             if (output_is_shared)
1849               {
1850                 // We need to create a dynamic relocation.
1851                 gold_assert(lsym.get_st_type() != elfcpp::STT_SECTION);
1852                 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1853                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1854                 rela_dyn->add_local_relative(object, r_sym, r_type,
1855                                              output_section, data_shndx,
1856                                              reloc.get_r_offset(), 0);
1857               }
1858             break;
1859           }
1860       }
1861       break;
1862
1863       // These are relocations which should only be seen by the
1864       // dynamic linker, and should never be seen here.
1865     case elfcpp::R_SPARC_COPY:
1866     case elfcpp::R_SPARC_GLOB_DAT:
1867     case elfcpp::R_SPARC_JMP_SLOT:
1868     case elfcpp::R_SPARC_RELATIVE:
1869     case elfcpp::R_SPARC_TLS_DTPMOD64:
1870     case elfcpp::R_SPARC_TLS_DTPMOD32:
1871     case elfcpp::R_SPARC_TLS_DTPOFF64:
1872     case elfcpp::R_SPARC_TLS_DTPOFF32:
1873     case elfcpp::R_SPARC_TLS_TPOFF64:
1874     case elfcpp::R_SPARC_TLS_TPOFF32:
1875       gold_error(_("%s: unexpected reloc %u in object file"),
1876                  object->name().c_str(), r_type);
1877       break;
1878
1879     default:
1880       unsupported_reloc_local(object, r_type);
1881       break;
1882     }
1883 }
1884
1885 // Report an unsupported relocation against a global symbol.
1886
1887 template<int size, bool big_endian>
1888 void
1889 Target_sparc<size, big_endian>::Scan::unsupported_reloc_global(
1890                         Sized_relobj<size, big_endian>* object,
1891                         unsigned int r_type,
1892                         Symbol* gsym)
1893 {
1894   gold_error(_("%s: unsupported reloc %u against global symbol %s"),
1895              object->name().c_str(), r_type, gsym->demangled_name().c_str());
1896 }
1897
1898 // Scan a relocation for a global symbol.
1899
1900 template<int size, bool big_endian>
1901 inline void
1902 Target_sparc<size, big_endian>::Scan::global(
1903                                 Symbol_table* symtab,
1904                                 Layout* layout,
1905                                 Target_sparc<size, big_endian>* target,
1906                                 Sized_relobj<size, big_endian>* object,
1907                                 unsigned int data_shndx,
1908                                 Output_section* output_section,
1909                                 const elfcpp::Rela<size, big_endian>& reloc,
1910                                 unsigned int r_type,
1911                                 Symbol* gsym)
1912 {
1913   unsigned int orig_r_type = r_type;
1914
1915   // A reference to _GLOBAL_OFFSET_TABLE_ implies that we need a got
1916   // section.  We check here to avoid creating a dynamic reloc against
1917   // _GLOBAL_OFFSET_TABLE_.
1918   if (!target->has_got_section()
1919       && strcmp(gsym->name(), "_GLOBAL_OFFSET_TABLE_") == 0)
1920     target->got_section(symtab, layout);
1921
1922   r_type &= 0xff;
1923   switch (r_type)
1924     {
1925     case elfcpp::R_SPARC_NONE:
1926     case elfcpp::R_SPARC_REGISTER:
1927     case elfcpp::R_SPARC_GNU_VTINHERIT:
1928     case elfcpp::R_SPARC_GNU_VTENTRY:
1929       break;
1930
1931     case elfcpp::R_SPARC_PLT64:
1932     case elfcpp::R_SPARC_PLT32:
1933     case elfcpp::R_SPARC_HIPLT22:
1934     case elfcpp::R_SPARC_LOPLT10:
1935     case elfcpp::R_SPARC_PCPLT32:
1936     case elfcpp::R_SPARC_PCPLT22:
1937     case elfcpp::R_SPARC_PCPLT10:
1938     case elfcpp::R_SPARC_WPLT30:
1939       // If the symbol is fully resolved, this is just a PC32 reloc.
1940       // Otherwise we need a PLT entry.
1941       if (gsym->final_value_is_known())
1942         break;
1943       // If building a shared library, we can also skip the PLT entry
1944       // if the symbol is defined in the output file and is protected
1945       // or hidden.
1946       if (gsym->is_defined()
1947           && !gsym->is_from_dynobj()
1948           && !gsym->is_preemptible())
1949         break;
1950       target->make_plt_entry(symtab, layout, gsym);
1951       break;
1952
1953     case elfcpp::R_SPARC_DISP8:
1954     case elfcpp::R_SPARC_DISP16:
1955     case elfcpp::R_SPARC_DISP32:
1956     case elfcpp::R_SPARC_DISP64:
1957     case elfcpp::R_SPARC_PC_HH22:
1958     case elfcpp::R_SPARC_PC_HM10:
1959     case elfcpp::R_SPARC_PC_LM22:
1960     case elfcpp::R_SPARC_PC10:
1961     case elfcpp::R_SPARC_PC22:
1962     case elfcpp::R_SPARC_WDISP30:
1963     case elfcpp::R_SPARC_WDISP22:
1964     case elfcpp::R_SPARC_WDISP19:
1965     case elfcpp::R_SPARC_WDISP16:
1966       {
1967         if (gsym->needs_plt_entry())
1968           target->make_plt_entry(symtab, layout, gsym);
1969         // Make a dynamic relocation if necessary.
1970         int flags = Symbol::NON_PIC_REF;
1971         if (gsym->type() == elfcpp::STT_FUNC)
1972           flags |= Symbol::FUNCTION_CALL;
1973         if (gsym->needs_dynamic_reloc(flags))
1974           {
1975             if (gsym->may_need_copy_reloc())
1976               {
1977                 target->copy_reloc(symtab, layout, object,
1978                                    data_shndx, output_section, gsym,
1979                                    reloc);
1980               }
1981             else
1982               {
1983                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1984                 check_non_pic(object, r_type);
1985                 rela_dyn->add_global(gsym, orig_r_type, output_section, object,
1986                                      data_shndx, reloc.get_r_offset(),
1987                                      reloc.get_r_addend());
1988               }
1989           }
1990       }
1991       break;
1992
1993     case elfcpp::R_SPARC_UA64:
1994     case elfcpp::R_SPARC_64:
1995     case elfcpp::R_SPARC_HIX22:
1996     case elfcpp::R_SPARC_LOX10:
1997     case elfcpp::R_SPARC_H44:
1998     case elfcpp::R_SPARC_M44:
1999     case elfcpp::R_SPARC_L44:
2000     case elfcpp::R_SPARC_HH22:
2001     case elfcpp::R_SPARC_HM10:
2002     case elfcpp::R_SPARC_LM22:
2003     case elfcpp::R_SPARC_HI22:
2004     case elfcpp::R_SPARC_LO10:
2005     case elfcpp::R_SPARC_OLO10:
2006     case elfcpp::R_SPARC_UA32:
2007     case elfcpp::R_SPARC_32:
2008     case elfcpp::R_SPARC_UA16:
2009     case elfcpp::R_SPARC_16:
2010     case elfcpp::R_SPARC_11:
2011     case elfcpp::R_SPARC_10:
2012     case elfcpp::R_SPARC_8:
2013     case elfcpp::R_SPARC_7:
2014     case elfcpp::R_SPARC_6:
2015     case elfcpp::R_SPARC_5:
2016       {
2017         // Make a PLT entry if necessary.
2018         if (gsym->needs_plt_entry())
2019           {
2020             target->make_plt_entry(symtab, layout, gsym);
2021             // Since this is not a PC-relative relocation, we may be
2022             // taking the address of a function. In that case we need to
2023             // set the entry in the dynamic symbol table to the address of
2024             // the PLT entry.
2025             if (gsym->is_from_dynobj() && !parameters->options().shared())
2026               gsym->set_needs_dynsym_value();
2027           }
2028         // Make a dynamic relocation if necessary.
2029         if (gsym->needs_dynamic_reloc(Symbol::ABSOLUTE_REF))
2030           {
2031             if (gsym->may_need_copy_reloc())
2032               {
2033                 target->copy_reloc(symtab, layout, object,
2034                                    data_shndx, output_section, gsym, reloc);
2035               }
2036             else if ((r_type == elfcpp::R_SPARC_32
2037                       || r_type == elfcpp::R_SPARC_64)
2038                      && gsym->can_use_relative_reloc(false))
2039               {
2040                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2041                 rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE,
2042                                               output_section, object,
2043                                               data_shndx, reloc.get_r_offset(),
2044                                               reloc.get_r_addend());
2045               }
2046             else
2047               {
2048                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2049
2050                 check_non_pic(object, r_type);
2051                 if (gsym->is_from_dynobj()
2052                     || gsym->is_undefined()
2053                     || gsym->is_preemptible())
2054                   rela_dyn->add_global(gsym, orig_r_type, output_section,
2055                                        object, data_shndx,
2056                                        reloc.get_r_offset(),
2057                                        reloc.get_r_addend());
2058                 else
2059                   rela_dyn->add_global_relative(gsym, orig_r_type,
2060                                                 output_section, object,
2061                                                 data_shndx,
2062                                                 reloc.get_r_offset(),
2063                                                 reloc.get_r_addend());
2064               }
2065           }
2066       }
2067       break;
2068
2069     case elfcpp::R_SPARC_GOT10:
2070     case elfcpp::R_SPARC_GOT13:
2071     case elfcpp::R_SPARC_GOT22:
2072       {
2073         // The symbol requires a GOT entry.
2074         Output_data_got<size, big_endian>* got;
2075
2076         got = target->got_section(symtab, layout);
2077         if (gsym->final_value_is_known())
2078           got->add_global(gsym, GOT_TYPE_STANDARD);
2079         else
2080           {
2081             // If this symbol is not fully resolved, we need to add a
2082             // dynamic relocation for it.
2083             Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2084             if (gsym->is_from_dynobj()
2085                 || gsym->is_undefined()
2086                 || gsym->is_preemptible())
2087               got->add_global_with_rela(gsym, GOT_TYPE_STANDARD, rela_dyn,
2088                                         elfcpp::R_SPARC_GLOB_DAT);
2089             else if (!gsym->has_got_offset(GOT_TYPE_STANDARD))
2090               {
2091                 unsigned int off = got->add_constant(0);
2092
2093                 gsym->set_got_offset(GOT_TYPE_STANDARD, off);
2094                 rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE,
2095                                               got, off, 0);
2096               }
2097           }
2098       }
2099       break;
2100
2101       // These are initial tls relocs, which are expected when
2102       // linking.
2103     case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2104     case elfcpp::R_SPARC_TLS_GD_LO10:
2105     case elfcpp::R_SPARC_TLS_GD_ADD:
2106     case elfcpp::R_SPARC_TLS_GD_CALL:
2107     case elfcpp::R_SPARC_TLS_LDM_HI22:  // Local-dynamic
2108     case elfcpp::R_SPARC_TLS_LDM_LO10:
2109     case elfcpp::R_SPARC_TLS_LDM_ADD:
2110     case elfcpp::R_SPARC_TLS_LDM_CALL:
2111     case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
2112     case elfcpp::R_SPARC_TLS_LDO_LOX10:
2113     case elfcpp::R_SPARC_TLS_LDO_ADD:
2114     case elfcpp::R_SPARC_TLS_LE_HIX22:
2115     case elfcpp::R_SPARC_TLS_LE_LOX10:
2116     case elfcpp::R_SPARC_TLS_IE_HI22:   // Initial-exec
2117     case elfcpp::R_SPARC_TLS_IE_LO10:
2118     case elfcpp::R_SPARC_TLS_IE_LD:
2119     case elfcpp::R_SPARC_TLS_IE_LDX:
2120     case elfcpp::R_SPARC_TLS_IE_ADD:
2121       {
2122         const bool is_final = gsym->final_value_is_known();
2123         const tls::Tls_optimization optimized_type
2124             = optimize_tls_reloc(is_final, r_type);
2125         switch (r_type)
2126           {
2127           case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2128           case elfcpp::R_SPARC_TLS_GD_LO10:
2129           case elfcpp::R_SPARC_TLS_GD_ADD:
2130           case elfcpp::R_SPARC_TLS_GD_CALL:
2131             if (optimized_type == tls::TLSOPT_NONE)
2132               {
2133                 // Create a pair of GOT entries for the module index and
2134                 // dtv-relative offset.
2135                 Output_data_got<size, big_endian>* got
2136                     = target->got_section(symtab, layout);
2137                 got->add_global_pair_with_rela(gsym, GOT_TYPE_TLS_PAIR,
2138                                                target->rela_dyn_section(layout),
2139                                                (size == 64 ?
2140                                                 elfcpp::R_SPARC_TLS_DTPMOD64 :
2141                                                 elfcpp::R_SPARC_TLS_DTPMOD32),
2142                                                (size == 64 ?
2143                                                 elfcpp::R_SPARC_TLS_DTPOFF64 :
2144                                                 elfcpp::R_SPARC_TLS_DTPOFF32));
2145
2146                 // Emit R_SPARC_WPLT30 against "__tls_get_addr"
2147                 if (r_type == elfcpp::R_SPARC_TLS_GD_CALL)
2148                   generate_tls_call(symtab, layout, target);
2149               }
2150             else if (optimized_type == tls::TLSOPT_TO_IE)
2151               {
2152                 // Create a GOT entry for the tp-relative offset.
2153                 Output_data_got<size, big_endian>* got
2154                     = target->got_section(symtab, layout);
2155                 got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET,
2156                                           target->rela_dyn_section(layout),
2157                                           (size == 64 ?
2158                                            elfcpp::R_SPARC_TLS_TPOFF64 :
2159                                            elfcpp::R_SPARC_TLS_TPOFF32));
2160               }
2161             else if (optimized_type != tls::TLSOPT_TO_LE)
2162               unsupported_reloc_global(object, r_type, gsym);
2163             break;
2164
2165           case elfcpp::R_SPARC_TLS_LDM_HI22:    // Local-dynamic
2166           case elfcpp::R_SPARC_TLS_LDM_LO10:
2167           case elfcpp::R_SPARC_TLS_LDM_ADD:
2168           case elfcpp::R_SPARC_TLS_LDM_CALL:
2169             if (optimized_type == tls::TLSOPT_NONE)
2170               {
2171                 // Create a GOT entry for the module index.
2172                 target->got_mod_index_entry(symtab, layout, object);
2173
2174                 if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL)
2175                   generate_tls_call(symtab, layout, target);
2176               }
2177             else if (optimized_type != tls::TLSOPT_TO_LE)
2178               unsupported_reloc_global(object, r_type, gsym);
2179             break;
2180
2181           case elfcpp::R_SPARC_TLS_LDO_HIX22:   // Alternate local-dynamic
2182           case elfcpp::R_SPARC_TLS_LDO_LOX10:
2183           case elfcpp::R_SPARC_TLS_LDO_ADD:
2184             break;
2185
2186           case elfcpp::R_SPARC_TLS_LE_HIX22:
2187           case elfcpp::R_SPARC_TLS_LE_LOX10:
2188             layout->set_has_static_tls();
2189             if (parameters->options().shared())
2190               {
2191                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2192                 rela_dyn->add_global_relative(gsym, orig_r_type,
2193                                               output_section, object,
2194                                               data_shndx, reloc.get_r_offset(),
2195                                               0);
2196               }
2197             break;
2198
2199           case elfcpp::R_SPARC_TLS_IE_HI22:     // Initial-exec
2200           case elfcpp::R_SPARC_TLS_IE_LO10:
2201           case elfcpp::R_SPARC_TLS_IE_LD:
2202           case elfcpp::R_SPARC_TLS_IE_LDX:
2203           case elfcpp::R_SPARC_TLS_IE_ADD:
2204             layout->set_has_static_tls();
2205             if (optimized_type == tls::TLSOPT_NONE)
2206               {
2207                 // Create a GOT entry for the tp-relative offset.
2208                 Output_data_got<size, big_endian>* got
2209                   = target->got_section(symtab, layout);
2210                 got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET,
2211                                           target->rela_dyn_section(layout),
2212                                           (size == 64 ?
2213                                            elfcpp::R_SPARC_TLS_TPOFF64 :
2214                                            elfcpp::R_SPARC_TLS_TPOFF32));
2215               }
2216             else if (optimized_type != tls::TLSOPT_TO_LE)
2217               unsupported_reloc_global(object, r_type, gsym);
2218             break;
2219           }
2220       }
2221       break;
2222
2223       // These are relocations which should only be seen by the
2224       // dynamic linker, and should never be seen here.
2225     case elfcpp::R_SPARC_COPY:
2226     case elfcpp::R_SPARC_GLOB_DAT:
2227     case elfcpp::R_SPARC_JMP_SLOT:
2228     case elfcpp::R_SPARC_RELATIVE:
2229     case elfcpp::R_SPARC_TLS_DTPMOD64:
2230     case elfcpp::R_SPARC_TLS_DTPMOD32:
2231     case elfcpp::R_SPARC_TLS_DTPOFF64:
2232     case elfcpp::R_SPARC_TLS_DTPOFF32:
2233     case elfcpp::R_SPARC_TLS_TPOFF64:
2234     case elfcpp::R_SPARC_TLS_TPOFF32:
2235       gold_error(_("%s: unexpected reloc %u in object file"),
2236                  object->name().c_str(), r_type);
2237       break;
2238
2239     default:
2240       unsupported_reloc_global(object, r_type, gsym);
2241       break;
2242     }
2243 }
2244
2245 // Process relocations for gc.
2246
2247 template<int size, bool big_endian>
2248 void
2249 Target_sparc<size, big_endian>::gc_process_relocs(
2250                         Symbol_table* symtab,
2251                         Layout* layout,
2252                         Sized_relobj<size, big_endian>* object,
2253                         unsigned int data_shndx,
2254                         unsigned int,
2255                         const unsigned char* prelocs,
2256                         size_t reloc_count,
2257                         Output_section* output_section,
2258                         bool needs_special_offset_handling,
2259                         size_t local_symbol_count,
2260                         const unsigned char* plocal_symbols)
2261 {
2262   typedef Target_sparc<size, big_endian> Sparc;
2263   typedef typename Target_sparc<size, big_endian>::Scan scan;
2264
2265   gold::gc_process_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, scan>(
2266     symtab,
2267     layout,
2268     this,
2269     object,
2270     data_shndx,
2271     prelocs,
2272     reloc_count,
2273     output_section,
2274     needs_special_offset_handling,
2275     local_symbol_count,
2276     plocal_symbols);
2277 }
2278
2279 // Scan relocations for a section.
2280
2281 template<int size, bool big_endian>
2282 void
2283 Target_sparc<size, big_endian>::scan_relocs(
2284                         Symbol_table* symtab,
2285                         Layout* layout,
2286                         Sized_relobj<size, big_endian>* object,
2287                         unsigned int data_shndx,
2288                         unsigned int sh_type,
2289                         const unsigned char* prelocs,
2290                         size_t reloc_count,
2291                         Output_section* output_section,
2292                         bool needs_special_offset_handling,
2293                         size_t local_symbol_count,
2294                         const unsigned char* plocal_symbols)
2295 {
2296   typedef Target_sparc<size, big_endian> Sparc;
2297   typedef typename Target_sparc<size, big_endian>::Scan scan;
2298
2299   if (sh_type == elfcpp::SHT_REL)
2300     {
2301       gold_error(_("%s: unsupported REL reloc section"),
2302                  object->name().c_str());
2303       return;
2304     }
2305
2306   gold::scan_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, scan>(
2307     symtab,
2308     layout,
2309     this,
2310     object,
2311     data_shndx,
2312     prelocs,
2313     reloc_count,
2314     output_section,
2315     needs_special_offset_handling,
2316     local_symbol_count,
2317     plocal_symbols);
2318 }
2319
2320 // Finalize the sections.
2321
2322 template<int size, bool big_endian>
2323 void
2324 Target_sparc<size, big_endian>::do_finalize_sections(
2325     Layout* layout,
2326     const Input_objects*,
2327     Symbol_table*)
2328 {
2329   // Fill in some more dynamic tags.
2330   Output_data_dynamic* const odyn = layout->dynamic_data();
2331   if (odyn != NULL)
2332     {
2333       if (this->plt_ != NULL
2334           && this->plt_->output_section() != NULL)
2335         {
2336           const Output_data* od = this->plt_->rel_plt();
2337           odyn->add_section_size(elfcpp::DT_PLTRELSZ, od);
2338           odyn->add_section_address(elfcpp::DT_JMPREL, od);
2339           odyn->add_constant(elfcpp::DT_PLTREL, elfcpp::DT_RELA);
2340
2341           odyn->add_section_address(elfcpp::DT_PLTGOT, this->plt_);
2342         }
2343
2344       if (this->rela_dyn_ != NULL
2345           && this->rela_dyn_->output_section() != NULL)
2346         {
2347           const Output_data* od = this->rela_dyn_;
2348           odyn->add_section_address(elfcpp::DT_RELA, od);
2349           odyn->add_section_size(elfcpp::DT_RELASZ, od);
2350           odyn->add_constant(elfcpp::DT_RELAENT,
2351                              elfcpp::Elf_sizes<size>::rela_size);
2352         }
2353
2354       if (!parameters->options().shared())
2355         {
2356           // The value of the DT_DEBUG tag is filled in by the dynamic
2357           // linker at run time, and used by the debugger.
2358           odyn->add_constant(elfcpp::DT_DEBUG, 0);
2359         }
2360     }
2361
2362   // Emit any relocs we saved in an attempt to avoid generating COPY
2363   // relocs.
2364   if (this->copy_relocs_.any_saved_relocs())
2365     this->copy_relocs_.emit(this->rela_dyn_section(layout));
2366 }
2367
2368 // Perform a relocation.
2369
2370 template<int size, bool big_endian>
2371 inline bool
2372 Target_sparc<size, big_endian>::Relocate::relocate(
2373                         const Relocate_info<size, big_endian>* relinfo,
2374                         Target_sparc* target,
2375                         Output_section*,
2376                         size_t relnum,
2377                         const elfcpp::Rela<size, big_endian>& rela,
2378                         unsigned int r_type,
2379                         const Sized_symbol<size>* gsym,
2380                         const Symbol_value<size>* psymval,
2381                         unsigned char* view,
2382                         typename elfcpp::Elf_types<size>::Elf_Addr address,
2383                         section_size_type view_size)
2384 {
2385   r_type &= 0xff;
2386
2387   if (this->ignore_gd_add_)
2388     {
2389       if (r_type != elfcpp::R_SPARC_TLS_GD_ADD)
2390         gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2391                                _("missing expected TLS relocation"));
2392       else
2393         {
2394           this->ignore_gd_add_ = false;
2395           return false;
2396         }
2397     }
2398
2399   typedef Sparc_relocate_functions<size, big_endian> Reloc;
2400
2401   // Pick the value to use for symbols defined in shared objects.
2402   Symbol_value<size> symval;
2403   if (gsym != NULL
2404       && gsym->use_plt_offset(r_type == elfcpp::R_SPARC_DISP8
2405                               || r_type == elfcpp::R_SPARC_DISP16
2406                               || r_type == elfcpp::R_SPARC_DISP32
2407                               || r_type == elfcpp::R_SPARC_DISP64
2408                               || r_type == elfcpp::R_SPARC_PC_HH22
2409                               || r_type == elfcpp::R_SPARC_PC_HM10
2410                               || r_type == elfcpp::R_SPARC_PC_LM22
2411                               || r_type == elfcpp::R_SPARC_PC10
2412                               || r_type == elfcpp::R_SPARC_PC22
2413                               || r_type == elfcpp::R_SPARC_WDISP30
2414                               || r_type == elfcpp::R_SPARC_WDISP22
2415                               || r_type == elfcpp::R_SPARC_WDISP19
2416                               || r_type == elfcpp::R_SPARC_WDISP16))
2417     {
2418       elfcpp::Elf_Xword avalue;
2419
2420       avalue = target->plt_section()->address() + gsym->plt_offset();
2421
2422       symval.set_output_value(avalue);
2423
2424       psymval = &symval;
2425     }
2426
2427   const Sized_relobj<size, big_endian>* object = relinfo->object;
2428   const elfcpp::Elf_Xword addend = rela.get_r_addend();
2429
2430   // Get the GOT offset if needed.  Unlike i386 and x86_64, our GOT
2431   // pointer points to the beginning, not the end, of the table.
2432   // So we just use the plain offset.
2433   bool have_got_offset = false;
2434   unsigned int got_offset = 0;
2435   switch (r_type)
2436     {
2437     case elfcpp::R_SPARC_GOT10:
2438     case elfcpp::R_SPARC_GOT13:
2439     case elfcpp::R_SPARC_GOT22:
2440       if (gsym != NULL)
2441         {
2442           gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD));
2443           got_offset = gsym->got_offset(GOT_TYPE_STANDARD);
2444         }
2445       else
2446         {
2447           unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
2448           gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD));
2449           got_offset = object->local_got_offset(r_sym, GOT_TYPE_STANDARD);
2450         }
2451       have_got_offset = true;
2452       break;
2453
2454     default:
2455       break;
2456     }
2457
2458   switch (r_type)
2459     {
2460     case elfcpp::R_SPARC_NONE:
2461     case elfcpp::R_SPARC_REGISTER:
2462     case elfcpp::R_SPARC_GNU_VTINHERIT:
2463     case elfcpp::R_SPARC_GNU_VTENTRY:
2464       break;
2465
2466     case elfcpp::R_SPARC_8:
2467       Relocate_functions<size, big_endian>::rela8(view, object,
2468                                                   psymval, addend);
2469       break;
2470
2471     case elfcpp::R_SPARC_16:
2472       Relocate_functions<size, big_endian>::rela16(view, object,
2473                                                    psymval, addend);
2474       break;
2475
2476     case elfcpp::R_SPARC_32:
2477       if (!parameters->options().output_is_position_independent())
2478         Relocate_functions<size, big_endian>::rela32(view, object,
2479                                                      psymval, addend);
2480       break;
2481
2482     case elfcpp::R_SPARC_DISP8:
2483       Reloc::disp8(view, object, psymval, addend, address);
2484       break;
2485
2486     case elfcpp::R_SPARC_DISP16:
2487       Reloc::disp16(view, object, psymval, addend, address);
2488       break;
2489
2490     case elfcpp::R_SPARC_DISP32:
2491       Reloc::disp32(view, object, psymval, addend, address);
2492       break;
2493
2494     case elfcpp::R_SPARC_DISP64:
2495       Reloc::disp64(view, object, psymval, addend, address);
2496       break;
2497
2498     case elfcpp::R_SPARC_WDISP30:
2499     case elfcpp::R_SPARC_WPLT30:
2500       Reloc::wdisp30(view, object, psymval, addend, address);
2501       break;
2502
2503     case elfcpp::R_SPARC_WDISP22:
2504       Reloc::wdisp22(view, object, psymval, addend, address);
2505       break;
2506
2507     case elfcpp::R_SPARC_WDISP19:
2508       Reloc::wdisp19(view, object, psymval, addend, address);
2509       break;
2510
2511     case elfcpp::R_SPARC_WDISP16:
2512       Reloc::wdisp16(view, object, psymval, addend, address);
2513       break;
2514
2515     case elfcpp::R_SPARC_HI22:
2516       Reloc::hi22(view, object, psymval, addend);
2517       break;
2518
2519     case elfcpp::R_SPARC_22:
2520       Reloc::rela32_22(view, object, psymval, addend);
2521       break;
2522
2523     case elfcpp::R_SPARC_13:
2524       Reloc::rela32_13(view, object, psymval, addend);
2525       break;
2526
2527     case elfcpp::R_SPARC_LO10:
2528       Reloc::lo10(view, object, psymval, addend);
2529       break;
2530
2531     case elfcpp::R_SPARC_GOT10:
2532       Reloc::lo10(view, got_offset, addend);
2533       break;
2534
2535     case elfcpp::R_SPARC_GOT13:
2536       Reloc::rela32_13(view, got_offset, addend);
2537       break;
2538
2539     case elfcpp::R_SPARC_GOT22:
2540       Reloc::hi22(view, got_offset, addend);
2541       break;
2542
2543     case elfcpp::R_SPARC_PC10:
2544       Reloc::pc10(view, object, psymval, addend, address);
2545       break;
2546
2547     case elfcpp::R_SPARC_PC22:
2548       Reloc::pc22(view, object, psymval, addend, address);
2549       break;
2550
2551     case elfcpp::R_SPARC_TLS_DTPOFF32:
2552     case elfcpp::R_SPARC_UA32:
2553       Reloc::ua32(view, object, psymval, addend);
2554       break;
2555
2556     case elfcpp::R_SPARC_PLT64:
2557       Relocate_functions<size, big_endian>::rela64(view, object,
2558                                                    psymval, addend);
2559       break;
2560
2561     case elfcpp::R_SPARC_PLT32:
2562       Relocate_functions<size, big_endian>::rela32(view, object,
2563                                                    psymval, addend);
2564       break;
2565
2566     case elfcpp::R_SPARC_HIPLT22:
2567       Reloc::hi22(view, object, psymval, addend);
2568       break;
2569
2570     case elfcpp::R_SPARC_LOPLT10:
2571       Reloc::lo10(view, object, psymval, addend);
2572       break;
2573
2574     case elfcpp::R_SPARC_PCPLT32:
2575       Reloc::disp32(view, object, psymval, addend, address);
2576       break;
2577
2578     case elfcpp::R_SPARC_PCPLT22:
2579       Reloc::pcplt22(view, object, psymval, addend, address);
2580       break;
2581
2582     case elfcpp::R_SPARC_PCPLT10:
2583       Reloc::lo10(view, object, psymval, addend, address);
2584       break;
2585
2586     case elfcpp::R_SPARC_64:
2587       if (!parameters->options().output_is_position_independent())
2588               Relocate_functions<size, big_endian>::rela64(view, object,
2589                                                            psymval, addend);
2590       break;
2591
2592     case elfcpp::R_SPARC_OLO10:
2593       {
2594         unsigned int addend2 = rela.get_r_info() & 0xffffffff;
2595         addend2 = ((addend2 >> 8) ^ 0x800000) - 0x800000;
2596         Reloc::olo10(view, object, psymval, addend, addend2);
2597       }
2598       break;
2599
2600     case elfcpp::R_SPARC_HH22:
2601       Reloc::hh22(view, object, psymval, addend);
2602       break;
2603
2604     case elfcpp::R_SPARC_PC_HH22:
2605       Reloc::pc_hh22(view, object, psymval, addend, address);
2606       break;
2607
2608     case elfcpp::R_SPARC_HM10:
2609       Reloc::hm10(view, object, psymval, addend);
2610       break;
2611
2612     case elfcpp::R_SPARC_PC_HM10:
2613       Reloc::pc_hm10(view, object, psymval, addend, address);
2614       break;
2615
2616     case elfcpp::R_SPARC_LM22:
2617       Reloc::hi22(view, object, psymval, addend);
2618       break;
2619
2620     case elfcpp::R_SPARC_PC_LM22:
2621       Reloc::pcplt22(view, object, psymval, addend, address);
2622       break;
2623
2624     case elfcpp::R_SPARC_11:
2625       Reloc::rela32_11(view, object, psymval, addend);
2626       break;
2627
2628     case elfcpp::R_SPARC_10:
2629       Reloc::rela32_10(view, object, psymval, addend);
2630       break;
2631
2632     case elfcpp::R_SPARC_7:
2633       Reloc::rela32_7(view, object, psymval, addend);
2634       break;
2635
2636     case elfcpp::R_SPARC_6:
2637       Reloc::rela32_6(view, object, psymval, addend);
2638       break;
2639
2640     case elfcpp::R_SPARC_5:
2641       Reloc::rela32_5(view, object, psymval, addend);
2642       break;
2643
2644     case elfcpp::R_SPARC_HIX22:
2645       Reloc::hix22(view, object, psymval, addend);
2646       break;
2647
2648     case elfcpp::R_SPARC_LOX10:
2649       Reloc::lox10(view, object, psymval, addend);
2650       break;
2651
2652     case elfcpp::R_SPARC_H44:
2653       Reloc::h44(view, object, psymval, addend);
2654       break;
2655
2656     case elfcpp::R_SPARC_M44:
2657       Reloc::m44(view, object, psymval, addend);
2658       break;
2659
2660     case elfcpp::R_SPARC_L44:
2661       Reloc::l44(view, object, psymval, addend);
2662       break;
2663
2664     case elfcpp::R_SPARC_TLS_DTPOFF64:
2665     case elfcpp::R_SPARC_UA64:
2666       Reloc::ua64(view, object, psymval, addend);
2667       break;
2668
2669     case elfcpp::R_SPARC_UA16:
2670       Reloc::ua16(view, object, psymval, addend);
2671       break;
2672
2673     case elfcpp::R_SPARC_TLS_GD_HI22:
2674     case elfcpp::R_SPARC_TLS_GD_LO10:
2675     case elfcpp::R_SPARC_TLS_GD_ADD:
2676     case elfcpp::R_SPARC_TLS_GD_CALL:
2677     case elfcpp::R_SPARC_TLS_LDM_HI22:
2678     case elfcpp::R_SPARC_TLS_LDM_LO10:
2679     case elfcpp::R_SPARC_TLS_LDM_ADD:
2680     case elfcpp::R_SPARC_TLS_LDM_CALL:
2681     case elfcpp::R_SPARC_TLS_LDO_HIX22:
2682     case elfcpp::R_SPARC_TLS_LDO_LOX10:
2683     case elfcpp::R_SPARC_TLS_LDO_ADD:
2684     case elfcpp::R_SPARC_TLS_IE_HI22:
2685     case elfcpp::R_SPARC_TLS_IE_LO10:
2686     case elfcpp::R_SPARC_TLS_IE_LD:
2687     case elfcpp::R_SPARC_TLS_IE_LDX:
2688     case elfcpp::R_SPARC_TLS_IE_ADD:
2689     case elfcpp::R_SPARC_TLS_LE_HIX22:
2690     case elfcpp::R_SPARC_TLS_LE_LOX10:
2691       this->relocate_tls(relinfo, target, relnum, rela,
2692                          r_type, gsym, psymval, view,
2693                          address, view_size);
2694       break;
2695
2696     case elfcpp::R_SPARC_COPY:
2697     case elfcpp::R_SPARC_GLOB_DAT:
2698     case elfcpp::R_SPARC_JMP_SLOT:
2699     case elfcpp::R_SPARC_RELATIVE:
2700       // These are outstanding tls relocs, which are unexpected when
2701       // linking.
2702     case elfcpp::R_SPARC_TLS_DTPMOD64:
2703     case elfcpp::R_SPARC_TLS_DTPMOD32:
2704     case elfcpp::R_SPARC_TLS_TPOFF64:
2705     case elfcpp::R_SPARC_TLS_TPOFF32:
2706       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2707                              _("unexpected reloc %u in object file"),
2708                              r_type);
2709       break;
2710
2711     default:
2712       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2713                              _("unsupported reloc %u"),
2714                              r_type);
2715       break;
2716     }
2717
2718   return true;
2719 }
2720
2721 // Perform a TLS relocation.
2722
2723 template<int size, bool big_endian>
2724 inline void
2725 Target_sparc<size, big_endian>::Relocate::relocate_tls(
2726                         const Relocate_info<size, big_endian>* relinfo,
2727                         Target_sparc<size, big_endian>* target,
2728                         size_t relnum,
2729                         const elfcpp::Rela<size, big_endian>& rela,
2730                         unsigned int r_type,
2731                         const Sized_symbol<size>* gsym,
2732                         const Symbol_value<size>* psymval,
2733                         unsigned char* view,
2734                         typename elfcpp::Elf_types<size>::Elf_Addr address,
2735                         section_size_type)
2736 {
2737   Output_segment* tls_segment = relinfo->layout->tls_segment();
2738   typedef Sparc_relocate_functions<size, big_endian> Reloc;
2739   const Sized_relobj<size, big_endian>* object = relinfo->object;
2740   typedef typename elfcpp::Swap<32, true>::Valtype Insntype;
2741
2742   const elfcpp::Elf_Xword addend = rela.get_r_addend();
2743   typename elfcpp::Elf_types<size>::Elf_Addr avalue = psymval->value(object, 0);
2744
2745   const bool is_final =
2746     (gsym == NULL
2747      ? !parameters->options().output_is_position_independent()
2748      : gsym->final_value_is_known());
2749   const tls::Tls_optimization optimized_type
2750       = optimize_tls_reloc(is_final, r_type);
2751
2752   switch (r_type)
2753     {
2754     case elfcpp::R_SPARC_TLS_GD_HI22:
2755     case elfcpp::R_SPARC_TLS_GD_LO10:
2756     case elfcpp::R_SPARC_TLS_GD_ADD:
2757     case elfcpp::R_SPARC_TLS_GD_CALL:
2758       if (optimized_type == tls::TLSOPT_TO_LE)
2759         {
2760           Insntype* wv = reinterpret_cast<Insntype*>(view);
2761           Insntype val;
2762
2763           avalue -= tls_segment->memsz();
2764
2765           switch (r_type)
2766             {
2767             case elfcpp::R_SPARC_TLS_GD_HI22:
2768               // TLS_GD_HI22 --> TLS_LE_HIX22
2769               Reloc::hix22(view, avalue, addend);
2770               break;
2771
2772             case elfcpp::R_SPARC_TLS_GD_LO10:
2773               // TLS_GD_LO10 --> TLS_LE_LOX10
2774               Reloc::lox10(view, avalue, addend);
2775               break;
2776
2777             case elfcpp::R_SPARC_TLS_GD_ADD:
2778               // add %reg1, %reg2, %reg3 --> mov %g7, %reg2, %reg3
2779               val = elfcpp::Swap<32, true>::readval(wv);
2780               val = (val & ~0x7c000) | 0x1c000;
2781               elfcpp::Swap<32, true>::writeval(wv, val);
2782               break;
2783             case elfcpp::R_SPARC_TLS_GD_CALL:
2784               // call __tls_get_addr --> nop
2785               elfcpp::Swap<32, true>::writeval(wv, sparc_nop);
2786               break;
2787             }
2788           break;
2789         }
2790       else
2791         {
2792           unsigned int got_type = (optimized_type == tls::TLSOPT_TO_IE
2793                                    ? GOT_TYPE_TLS_OFFSET
2794                                    : GOT_TYPE_TLS_PAIR);
2795           if (gsym != NULL)
2796             {
2797               gold_assert(gsym->has_got_offset(got_type));
2798               avalue = gsym->got_offset(got_type);
2799             }
2800           else
2801             {
2802               unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
2803               gold_assert(object->local_has_got_offset(r_sym, got_type));
2804               avalue = object->local_got_offset(r_sym, got_type);
2805             }
2806           if (optimized_type == tls::TLSOPT_TO_IE)
2807             {
2808               Insntype* wv = reinterpret_cast<Insntype*>(view);
2809               Insntype val;
2810
2811               switch (r_type)
2812                 {
2813                 case elfcpp::R_SPARC_TLS_GD_HI22:
2814                   // TLS_GD_HI22 --> TLS_IE_HI22
2815                   Reloc::hi22(view, avalue, addend);
2816                   break;
2817
2818                 case elfcpp::R_SPARC_TLS_GD_LO10:
2819                   // TLS_GD_LO10 --> TLS_IE_LO10
2820                   Reloc::lo10(view, avalue, addend);
2821                   break;
2822
2823                 case elfcpp::R_SPARC_TLS_GD_ADD:
2824                   // add %reg1, %reg2, %reg3 --> ld [%reg1 + %reg2], %reg3
2825                   val = elfcpp::Swap<32, true>::readval(wv);
2826
2827                   if (size == 64)
2828                     val |= 0xc0580000;
2829                   else
2830                     val |= 0xc0000000;
2831
2832                   elfcpp::Swap<32, true>::writeval(wv, val);
2833                   break;
2834
2835                 case elfcpp::R_SPARC_TLS_GD_CALL:
2836                   // The compiler can put the TLS_GD_ADD instruction
2837                   // into the delay slot of the call.  If so, we need
2838                   // to transpose the two instructions so that the
2839                   // the new sequence works properly.
2840                   //
2841                   // The test we use is if the instruction in the
2842                   // delay slot is an add with destination register
2843                   // equal to %o0
2844                   val = elfcpp::Swap<32, true>::readval(wv + 1);
2845                   if ((val & 0x81f80000) == 0x80000000
2846                       && ((val >> 25) & 0x1f) == 0x8)
2847                     {
2848                       if (size == 64)
2849                         val |= 0xc0580000;
2850                       else
2851                         val |= 0xc0000000;
2852
2853                       elfcpp::Swap<32, true>::writeval(wv, val);
2854
2855                       wv += 1;
2856                       this->ignore_gd_add_ = true;
2857                     }
2858
2859                   // call __tls_get_addr --> add %g7, %o0, %o0
2860                   elfcpp::Swap<32, true>::writeval(wv, 0x9001c008);
2861                   break;
2862                 }
2863               break;
2864             }
2865           else if (optimized_type == tls::TLSOPT_NONE)
2866             {
2867               switch (r_type)
2868                 {
2869                 case elfcpp::R_SPARC_TLS_GD_HI22:
2870                   Reloc::hi22(view, avalue, addend);
2871                   break;
2872                 case elfcpp::R_SPARC_TLS_GD_LO10:
2873                   Reloc::lo10(view, avalue, addend);
2874                   break;
2875                 case elfcpp::R_SPARC_TLS_GD_ADD:
2876                   break;
2877                 case elfcpp::R_SPARC_TLS_GD_CALL:
2878                   {
2879                     Symbol_value<size> symval;
2880                     elfcpp::Elf_Xword xvalue;
2881                     Symbol* tsym;
2882
2883                     tsym = target->tls_get_addr_sym_;
2884                     gold_assert(tsym);
2885                     xvalue = (target->plt_section()->address() +
2886                               tsym->plt_offset());
2887                     symval.set_output_value(xvalue);
2888                     Reloc::wdisp30(view, object, &symval, addend, address);
2889                   }
2890                   break;
2891                 }
2892               break;
2893             }
2894         }
2895       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2896                              _("unsupported reloc %u"),
2897                              r_type);
2898       break;
2899
2900     case elfcpp::R_SPARC_TLS_LDM_HI22:
2901     case elfcpp::R_SPARC_TLS_LDM_LO10:
2902     case elfcpp::R_SPARC_TLS_LDM_ADD:
2903     case elfcpp::R_SPARC_TLS_LDM_CALL:
2904       if (optimized_type == tls::TLSOPT_TO_LE)
2905         {
2906           Insntype* wv = reinterpret_cast<Insntype*>(view);
2907
2908           switch (r_type)
2909             {
2910             case elfcpp::R_SPARC_TLS_LDM_HI22:
2911             case elfcpp::R_SPARC_TLS_LDM_LO10:
2912             case elfcpp::R_SPARC_TLS_LDM_ADD:
2913               elfcpp::Swap<32, true>::writeval(wv, sparc_nop);
2914               break;
2915
2916             case elfcpp::R_SPARC_TLS_LDM_CALL:
2917               elfcpp::Swap<32, true>::writeval(wv, sparc_mov_g0_o0);
2918               break;
2919             }
2920           break;
2921         }
2922       else if (optimized_type == tls::TLSOPT_NONE)
2923         {
2924           // Relocate the field with the offset of the GOT entry for
2925           // the module index.
2926           unsigned int got_offset;
2927
2928           got_offset = target->got_mod_index_entry(NULL, NULL, NULL);
2929           switch (r_type)
2930             {
2931             case elfcpp::R_SPARC_TLS_LDM_HI22:
2932               Reloc::hi22(view, got_offset, addend);
2933               break;
2934             case elfcpp::R_SPARC_TLS_LDM_LO10:
2935               Reloc::lo10(view, got_offset, addend);
2936               break;
2937             case elfcpp::R_SPARC_TLS_LDM_ADD:
2938               break;
2939             case elfcpp::R_SPARC_TLS_LDM_CALL:
2940               {
2941                 Symbol_value<size> symval;
2942                 elfcpp::Elf_Xword xvalue;
2943                 Symbol* tsym;
2944
2945                 tsym = target->tls_get_addr_sym_;
2946                 gold_assert(tsym);
2947                 xvalue = (target->plt_section()->address() +
2948                           tsym->plt_offset());
2949                 symval.set_output_value(xvalue);
2950                 Reloc::wdisp30(view, object, &symval, addend, address);
2951               }
2952               break;
2953             }
2954           break;
2955         }
2956       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2957                              _("unsupported reloc %u"),
2958                              r_type);
2959       break;
2960
2961       // These relocs can appear in debugging sections, in which case
2962       // we won't see the TLS_LDM relocs.  The local_dynamic_type
2963       // field tells us this.
2964     case elfcpp::R_SPARC_TLS_LDO_HIX22:
2965       if (optimized_type == tls::TLSOPT_TO_LE)
2966         {
2967           avalue -= tls_segment->memsz();
2968           Reloc::hix22(view, avalue, addend);
2969         }
2970       else
2971         Reloc::ldo_hix22(view, avalue, addend);
2972       break;
2973     case elfcpp::R_SPARC_TLS_LDO_LOX10:
2974       if (optimized_type == tls::TLSOPT_TO_LE)
2975         {
2976           avalue -= tls_segment->memsz();
2977           Reloc::lox10(view, avalue, addend);
2978         }
2979       else
2980         Reloc::ldo_lox10(view, avalue, addend);
2981       break;
2982     case elfcpp::R_SPARC_TLS_LDO_ADD:
2983       if (optimized_type == tls::TLSOPT_TO_LE)
2984         {
2985           Insntype* wv = reinterpret_cast<Insntype*>(view);
2986           Insntype val;
2987
2988           // add %reg1, %reg2, %reg3 --> add %g7, %reg2, %reg3
2989           val = elfcpp::Swap<32, true>::readval(wv);
2990           val = (val & ~0x7c000) | 0x1c000;
2991           elfcpp::Swap<32, true>::writeval(wv, val);
2992         }
2993       break;
2994
2995       // When optimizing IE --> LE, the only relocation that is handled
2996       // differently is R_SPARC_TLS_IE_LD, it is rewritten from
2997       // 'ld{,x} [rs1 + rs2], rd' into 'mov rs2, rd' or simply a NOP is
2998       // rs2 and rd are the same.
2999     case elfcpp::R_SPARC_TLS_IE_LD:
3000     case elfcpp::R_SPARC_TLS_IE_LDX:
3001       if (optimized_type == tls::TLSOPT_TO_LE)
3002         {
3003           Insntype* wv = reinterpret_cast<Insntype*>(view);
3004           Insntype val = elfcpp::Swap<32, true>::readval(wv);
3005           Insntype rs2 = val & 0x1f;
3006           Insntype rd = (val >> 25) & 0x1f;
3007
3008           if (rs2 == rd)
3009             val = sparc_nop;
3010           else
3011             val = sparc_mov | (val & 0x3e00001f);
3012
3013           elfcpp::Swap<32, true>::writeval(wv, val);
3014         }
3015       break;
3016
3017     case elfcpp::R_SPARC_TLS_IE_HI22:
3018     case elfcpp::R_SPARC_TLS_IE_LO10:
3019       if (optimized_type == tls::TLSOPT_TO_LE)
3020         {
3021           avalue -= tls_segment->memsz();
3022           switch (r_type)
3023             {
3024             case elfcpp::R_SPARC_TLS_IE_HI22:
3025               // IE_HI22 --> LE_HIX22
3026               Reloc::hix22(view, avalue, addend);
3027               break;
3028             case elfcpp::R_SPARC_TLS_IE_LO10:
3029               // IE_LO10 --> LE_LOX10
3030               Reloc::lox10(view, avalue, addend);
3031               break;
3032             }
3033           break;
3034         }
3035       else if (optimized_type == tls::TLSOPT_NONE)
3036         {
3037           // Relocate the field with the offset of the GOT entry for
3038           // the tp-relative offset of the symbol.
3039           if (gsym != NULL)
3040             {
3041               gold_assert(gsym->has_got_offset(GOT_TYPE_TLS_OFFSET));
3042               avalue = gsym->got_offset(GOT_TYPE_TLS_OFFSET);
3043             }
3044           else
3045             {
3046               unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
3047               gold_assert(object->local_has_got_offset(r_sym,
3048                                                        GOT_TYPE_TLS_OFFSET));
3049               avalue = object->local_got_offset(r_sym,
3050                                                 GOT_TYPE_TLS_OFFSET);
3051             }
3052           switch (r_type)
3053             {
3054             case elfcpp::R_SPARC_TLS_IE_HI22:
3055               Reloc::hi22(view, avalue, addend);
3056               break;
3057             case elfcpp::R_SPARC_TLS_IE_LO10:
3058               Reloc::lo10(view, avalue, addend);
3059               break;
3060             }
3061           break;
3062         }
3063       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
3064                              _("unsupported reloc %u"),
3065                              r_type);
3066       break;
3067
3068     case elfcpp::R_SPARC_TLS_IE_ADD:
3069       // This seems to be mainly so that we can find the addition
3070       // instruction if there is one.  There doesn't seem to be any
3071       // actual relocation to apply.
3072       break;
3073
3074     case elfcpp::R_SPARC_TLS_LE_HIX22:
3075       // If we're creating a shared library, a dynamic relocation will
3076       // have been created for this location, so do not apply it now.
3077       if (!parameters->options().shared())
3078         {
3079           avalue -= tls_segment->memsz();
3080           Reloc::hix22(view, avalue, addend);
3081         }
3082       break;
3083
3084     case elfcpp::R_SPARC_TLS_LE_LOX10:
3085       // If we're creating a shared library, a dynamic relocation will
3086       // have been created for this location, so do not apply it now.
3087       if (!parameters->options().shared())
3088         {
3089           avalue -= tls_segment->memsz();
3090           Reloc::lox10(view, avalue, addend);
3091         }
3092       break;
3093     }
3094 }
3095
3096 // Relocate section data.
3097
3098 template<int size, bool big_endian>
3099 void
3100 Target_sparc<size, big_endian>::relocate_section(
3101                         const Relocate_info<size, big_endian>* relinfo,
3102                         unsigned int sh_type,
3103                         const unsigned char* prelocs,
3104                         size_t reloc_count,
3105                         Output_section* output_section,
3106                         bool needs_special_offset_handling,
3107                         unsigned char* view,
3108                         typename elfcpp::Elf_types<size>::Elf_Addr address,
3109                         section_size_type view_size,
3110                         const Reloc_symbol_changes* reloc_symbol_changes)
3111 {
3112   typedef Target_sparc<size, big_endian> Sparc;
3113   typedef typename Target_sparc<size, big_endian>::Relocate Sparc_relocate;
3114
3115   gold_assert(sh_type == elfcpp::SHT_RELA);
3116
3117   gold::relocate_section<size, big_endian, Sparc, elfcpp::SHT_RELA,
3118     Sparc_relocate>(
3119     relinfo,
3120     this,
3121     prelocs,
3122     reloc_count,
3123     output_section,
3124     needs_special_offset_handling,
3125     view,
3126     address,
3127     view_size,
3128     reloc_symbol_changes);
3129 }
3130
3131 // Return the size of a relocation while scanning during a relocatable
3132 // link.
3133
3134 template<int size, bool big_endian>
3135 unsigned int
3136 Target_sparc<size, big_endian>::Relocatable_size_for_reloc::get_size_for_reloc(
3137     unsigned int,
3138     Relobj*)
3139 {
3140   // We are always SHT_RELA, so we should never get here.
3141   gold_unreachable();
3142   return 0;
3143 }
3144
3145 // Scan the relocs during a relocatable link.
3146
3147 template<int size, bool big_endian>
3148 void
3149 Target_sparc<size, big_endian>::scan_relocatable_relocs(
3150                         Symbol_table* symtab,
3151                         Layout* layout,
3152                         Sized_relobj<size, big_endian>* object,
3153                         unsigned int data_shndx,
3154                         unsigned int sh_type,
3155                         const unsigned char* prelocs,
3156                         size_t reloc_count,
3157                         Output_section* output_section,
3158                         bool needs_special_offset_handling,
3159                         size_t local_symbol_count,
3160                         const unsigned char* plocal_symbols,
3161                         Relocatable_relocs* rr)
3162 {
3163   gold_assert(sh_type == elfcpp::SHT_RELA);
3164
3165   typedef gold::Default_scan_relocatable_relocs<elfcpp::SHT_RELA,
3166     Relocatable_size_for_reloc> Scan_relocatable_relocs;
3167
3168   gold::scan_relocatable_relocs<size, big_endian, elfcpp::SHT_RELA,
3169       Scan_relocatable_relocs>(
3170     symtab,
3171     layout,
3172     object,
3173     data_shndx,
3174     prelocs,
3175     reloc_count,
3176     output_section,
3177     needs_special_offset_handling,
3178     local_symbol_count,
3179     plocal_symbols,
3180     rr);
3181 }
3182
3183 // Relocate a section during a relocatable link.
3184
3185 template<int size, bool big_endian>
3186 void
3187 Target_sparc<size, big_endian>::relocate_for_relocatable(
3188     const Relocate_info<size, big_endian>* relinfo,
3189     unsigned int sh_type,
3190     const unsigned char* prelocs,
3191     size_t reloc_count,
3192     Output_section* output_section,
3193     off_t offset_in_output_section,
3194     const Relocatable_relocs* rr,
3195     unsigned char* view,
3196     typename elfcpp::Elf_types<size>::Elf_Addr view_address,
3197     section_size_type view_size,
3198     unsigned char* reloc_view,
3199     section_size_type reloc_view_size)
3200 {
3201   gold_assert(sh_type == elfcpp::SHT_RELA);
3202
3203   gold::relocate_for_relocatable<size, big_endian, elfcpp::SHT_RELA>(
3204     relinfo,
3205     prelocs,
3206     reloc_count,
3207     output_section,
3208     offset_in_output_section,
3209     rr,
3210     view,
3211     view_address,
3212     view_size,
3213     reloc_view,
3214     reloc_view_size);
3215 }
3216
3217 // Return the value to use for a dynamic which requires special
3218 // treatment.  This is how we support equality comparisons of function
3219 // pointers across shared library boundaries, as described in the
3220 // processor specific ABI supplement.
3221
3222 template<int size, bool big_endian>
3223 uint64_t
3224 Target_sparc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const
3225 {
3226   gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset());
3227   return this->plt_section()->address() + gsym->plt_offset();
3228 }
3229
3230 // The selector for sparc object files.
3231
3232 template<int size, bool big_endian>
3233 class Target_selector_sparc : public Target_selector
3234 {
3235 public:
3236   Target_selector_sparc()
3237     : Target_selector(elfcpp::EM_NONE, size, big_endian,
3238                       (size == 64 ? "elf64-sparc" : "elf32-sparc"))
3239   { }
3240
3241   Target* do_recognize(int amachine, int, int)
3242   {
3243     switch (size)
3244       {
3245       case 64:
3246         if (amachine != elfcpp::EM_SPARCV9)
3247           return NULL;
3248         break;
3249
3250       case 32:
3251         if (amachine != elfcpp::EM_SPARC
3252             && amachine != elfcpp::EM_SPARC32PLUS)
3253           return NULL;
3254         break;
3255
3256       default:
3257         return NULL;
3258       }
3259
3260     return this->instantiate_target();
3261   }
3262
3263   Target* do_instantiate_target()
3264   { return new Target_sparc<size, big_endian>(); }
3265 };
3266
3267 Target_selector_sparc<32, true> target_selector_sparc32;
3268 Target_selector_sparc<64, true> target_selector_sparc64;
3269
3270 } // End anonymous namespace.