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 value,
 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 = ((value + 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 value,
 593        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 594   {
 595     This_insn::template rela<32>(view, 10, 0x003fffff, value, 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 value,
 624        typename elfcpp::Elf_types<size>::Elf_Addr addend)
 625   {
 626     This_insn::template rela<32>(view, 0, 0x000003ff, value, 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 value,
 686             typename elfcpp::Elf_types<size>::Elf_Addr addend)
 687   {
 688     This_insn::template rela<32>(view, 0, 0x00001fff, value, 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 value,
 908             typename elfcpp::Elf_types<size>::Elf_Addr addend)
 909   {
 910     This_insn::hi22(view, value, 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 value,
 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 = (value + 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 value,
 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 = (value + 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 value,
 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 = (value + 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                                     Symbol_table::PREDEFINED,
1035                                     this->got_,
1036                                     0, 0, elfcpp::STT_OBJECT,
1037                                     elfcpp::STB_LOCAL,
1038                                     elfcpp::STV_HIDDEN, 0,
1039                                     false, false);
1040     }
1041
1042   return this->got_;
1043 }
1044
1045 // Get the dynamic reloc section, creating it if necessary.
1046
1047 template<int size, bool big_endian>
1048 typename Target_sparc<size, big_endian>::Reloc_section*
1049 Target_sparc<size, big_endian>::rela_dyn_section(Layout* layout)
1050 {
1051   if (this->rela_dyn_ == NULL)
1052     {
1053       gold_assert(layout != NULL);
1054       this->rela_dyn_ = new Reloc_section(parameters->options().combreloc());
1055       layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA,
1056                                       elfcpp::SHF_ALLOC, this->rela_dyn_, true);
1057     }
1058   return this->rela_dyn_;
1059 }
1060
1061 // A class to handle the PLT data.
1062
1063 template<int size, bool big_endian>
1064 class Output_data_plt_sparc : public Output_section_data
1065 {
1066  public:
1067   typedef Output_data_reloc<elfcpp::SHT_RELA, true,
1068                             size, big_endian> Reloc_section;
1069
1070   Output_data_plt_sparc(Layout*);
1071
1072   // Add an entry to the PLT.
1073   void add_entry(Symbol* gsym);
1074
1075   // Return the .rela.plt section data.
1076   const Reloc_section* rel_plt() const
1077   {
1078     return this->rel_;
1079   }
1080
1081  protected:
1082   void do_adjust_output_section(Output_section* os);
1083
1084   // Write to a map file.
1085   void
1086   do_print_to_mapfile(Mapfile* mapfile) const
1087   { mapfile->print_output_data(this, _("** PLT")); }
1088
1089  private:
1090   // The size of an entry in the PLT.
1091   static const int base_plt_entry_size = (size == 32 ? 12 : 32);
1092
1093   static const unsigned int plt_entries_per_block = 160;
1094   static const unsigned int plt_insn_chunk_size = 24;
1095   static const unsigned int plt_pointer_chunk_size = 8;
1096   static const unsigned int plt_block_size =
1097     (plt_entries_per_block
1098      * (plt_insn_chunk_size + plt_pointer_chunk_size));
1099
1100   // Set the final size.
1101   void
1102   set_final_data_size()
1103   {
1104     unsigned int full_count = this->count_ + 4;
1105     unsigned int extra = (size == 32 ? 4 : 0);
1106
1107     if (size == 32 || full_count < 32768)
1108       this->set_data_size((full_count * base_plt_entry_size) + extra);
1109     else
1110       {
1111         unsigned int ext_cnt = full_count - 32768;
1112
1113         this->set_data_size((32768 * base_plt_entry_size)
1114                             + (ext_cnt
1115                                * (plt_insn_chunk_size
1116                                   + plt_pointer_chunk_size)));
1117       }
1118   }
1119
1120   // Write out the PLT data.
1121   void
1122   do_write(Output_file*);
1123
1124   // The reloc section.
1125   Reloc_section* rel_;
1126   // The number of PLT entries.
1127   unsigned int count_;
1128 };
1129
1130 // Define the constants as required by C++ standard.
1131
1132 template<int size, bool big_endian>
1133 const int Output_data_plt_sparc<size, big_endian>::base_plt_entry_size;
1134
1135 template<int size, bool big_endian>
1136 const unsigned int
1137 Output_data_plt_sparc<size, big_endian>::plt_entries_per_block;
1138
1139 template<int size, bool big_endian>
1140 const unsigned int Output_data_plt_sparc<size, big_endian>::plt_insn_chunk_size;
1141
1142 template<int size, bool big_endian>
1143 const unsigned int
1144 Output_data_plt_sparc<size, big_endian>::plt_pointer_chunk_size;
1145
1146 template<int size, bool big_endian>
1147 const unsigned int Output_data_plt_sparc<size, big_endian>::plt_block_size;
1148
1149 // Create the PLT section.  The ordinary .got section is an argument,
1150 // since we need to refer to the start.
1151
1152 template<int size, bool big_endian>
1153 Output_data_plt_sparc<size, big_endian>::Output_data_plt_sparc(Layout* layout)
1154   : Output_section_data(size == 32 ? 4 : 8), count_(0)
1155 {
1156   this->rel_ = new Reloc_section(false);
1157   layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA,
1158                                   elfcpp::SHF_ALLOC, this->rel_, true);
1159 }
1160
1161 template<int size, bool big_endian>
1162 void
1163 Output_data_plt_sparc<size, big_endian>::do_adjust_output_section(Output_section* os)
1164 {
1165   os->set_entsize(0);
1166 }
1167
1168 // Add an entry to the PLT.
1169
1170 template<int size, bool big_endian>
1171 void
1172 Output_data_plt_sparc<size, big_endian>::add_entry(Symbol* gsym)
1173 {
1174   gold_assert(!gsym->has_plt_offset());
1175
1176   unsigned int index = this->count_ + 4;
1177   section_offset_type plt_offset;
1178
1179   if (size == 32 || index < 32768)
1180     plt_offset = index * base_plt_entry_size;
1181   else
1182     {
1183         unsigned int ext_index = index - 32768;
1184
1185         plt_offset = (32768 * base_plt_entry_size)
1186           + ((ext_index / plt_entries_per_block)
1187              * plt_block_size)
1188           + ((ext_index % plt_entries_per_block)
1189              * plt_insn_chunk_size);
1190     }
1191
1192   gsym->set_plt_offset(plt_offset);
1193
1194   ++this->count_;
1195
1196   // Every PLT entry needs a reloc.
1197   gsym->set_needs_dynsym_entry();
1198   this->rel_->add_global(gsym, elfcpp::R_SPARC_JMP_SLOT, this,
1199                          plt_offset, 0);
1200
1201   // Note that we don't need to save the symbol.  The contents of the
1202   // PLT are independent of which symbols are used.  The symbols only
1203   // appear in the relocations.
1204 }
1205
1206 static const unsigned int sparc_nop = 0x01000000;
1207 static const unsigned int sparc_sethi_g1 = 0x03000000;
1208 static const unsigned int sparc_branch_always = 0x30800000;
1209 static const unsigned int sparc_branch_always_pt = 0x30680000;
1210 static const unsigned int sparc_mov = 0x80100000;
1211 static const unsigned int sparc_mov_g0_o0 = 0x90100000;
1212 static const unsigned int sparc_mov_o7_g5 = 0x8a10000f;
1213 static const unsigned int sparc_call_plus_8 = 0x40000002;
1214 static const unsigned int sparc_ldx_o7_imm_g1 = 0xc25be000;
1215 static const unsigned int sparc_jmpl_o7_g1_g1 = 0x83c3c001;
1216 static const unsigned int sparc_mov_g5_o7 = 0x9e100005;
1217
1218 // Write out the PLT.
1219
1220 template<int size, bool big_endian>
1221 void
1222 Output_data_plt_sparc<size, big_endian>::do_write(Output_file* of)
1223 {
1224   const off_t offset = this->offset();
1225   const section_size_type oview_size =
1226     convert_to_section_size_type(this->data_size());
1227   unsigned char* const oview = of->get_output_view(offset, oview_size);
1228   unsigned char* pov = oview;
1229
1230   memset(pov, 0, base_plt_entry_size * 4);
1231   pov += base_plt_entry_size * 4;
1232
1233   unsigned int plt_offset = base_plt_entry_size * 4;
1234   const unsigned int count = this->count_;
1235
1236   if (size == 64)
1237     {
1238       unsigned int limit;
1239
1240       limit = (count > 32768 ? 32768 : count);
1241
1242       for (unsigned int i = 0; i < limit; ++i)
1243         {
1244           elfcpp::Swap<32, true>::writeval(pov + 0x00,
1245                                            sparc_sethi_g1 + plt_offset);
1246           elfcpp::Swap<32, true>::writeval(pov + 0x04,
1247                                            sparc_branch_always_pt +
1248                                            (((base_plt_entry_size -
1249                                               (plt_offset + 4)) >> 2) &
1250                                             0x7ffff));
1251           elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop);
1252           elfcpp::Swap<32, true>::writeval(pov + 0x0c, sparc_nop);
1253           elfcpp::Swap<32, true>::writeval(pov + 0x10, sparc_nop);
1254           elfcpp::Swap<32, true>::writeval(pov + 0x14, sparc_nop);
1255           elfcpp::Swap<32, true>::writeval(pov + 0x18, sparc_nop);
1256           elfcpp::Swap<32, true>::writeval(pov + 0x1c, sparc_nop);
1257
1258           pov += base_plt_entry_size;
1259           plt_offset += base_plt_entry_size;
1260         }
1261
1262       if (count > 32768)
1263         {
1264           unsigned int ext_cnt = count - 32768;
1265           unsigned int blks = ext_cnt / plt_entries_per_block;
1266
1267           for (unsigned int i = 0; i < blks; ++i)
1268             {
1269               unsigned int data_off = (plt_entries_per_block
1270                                        * plt_insn_chunk_size) - 4;
1271
1272               for (unsigned int j = 0; j < plt_entries_per_block; ++j)
1273                 {
1274                   elfcpp::Swap<32, true>::writeval(pov + 0x00,
1275                                                    sparc_mov_o7_g5);
1276                   elfcpp::Swap<32, true>::writeval(pov + 0x04,
1277                                                    sparc_call_plus_8);
1278                   elfcpp::Swap<32, true>::writeval(pov + 0x08,
1279                                                    sparc_nop);
1280                   elfcpp::Swap<32, true>::writeval(pov + 0x0c,
1281                                                    sparc_ldx_o7_imm_g1 +
1282                                                    (data_off & 0x1fff));
1283                   elfcpp::Swap<32, true>::writeval(pov + 0x10,
1284                                                    sparc_jmpl_o7_g1_g1);
1285                   elfcpp::Swap<32, true>::writeval(pov + 0x14,
1286                                                    sparc_mov_g5_o7);
1287
1288                   elfcpp::Swap<64, big_endian>::writeval(
1289                                 pov + 0x4 + data_off,
1290                                 (elfcpp::Elf_Xword) (oview - (pov + 0x04)));
1291
1292                   pov += plt_insn_chunk_size;
1293                   data_off -= 16;
1294                 }
1295             }
1296
1297           unsigned int sub_blk_cnt = ext_cnt % plt_entries_per_block;
1298           for (unsigned int i = 0; i < sub_blk_cnt; ++i)
1299             {
1300               unsigned int data_off = (sub_blk_cnt
1301                                        * plt_insn_chunk_size) - 4;
1302
1303               for (unsigned int j = 0; j < plt_entries_per_block; ++j)
1304                 {
1305                   elfcpp::Swap<32, true>::writeval(pov + 0x00,
1306                                                    sparc_mov_o7_g5);
1307                   elfcpp::Swap<32, true>::writeval(pov + 0x04,
1308                                                    sparc_call_plus_8);
1309                   elfcpp::Swap<32, true>::writeval(pov + 0x08,
1310                                                    sparc_nop);
1311                   elfcpp::Swap<32, true>::writeval(pov + 0x0c,
1312                                                    sparc_ldx_o7_imm_g1 +
1313                                                    (data_off & 0x1fff));
1314                   elfcpp::Swap<32, true>::writeval(pov + 0x10,
1315                                                    sparc_jmpl_o7_g1_g1);
1316                   elfcpp::Swap<32, true>::writeval(pov + 0x14,
1317                                                    sparc_mov_g5_o7);
1318
1319                   elfcpp::Swap<64, big_endian>::writeval(
1320                                 pov + 0x4 + data_off,
1321                                 (elfcpp::Elf_Xword) (oview - (pov + 0x04)));
1322
1323                   pov += plt_insn_chunk_size;
1324                   data_off -= 16;
1325                 }
1326             }
1327         }
1328     }
1329   else
1330     {
1331       for (unsigned int i = 0; i < count; ++i)
1332         {
1333           elfcpp::Swap<32, true>::writeval(pov + 0x00,
1334                                            sparc_sethi_g1 + plt_offset);
1335           elfcpp::Swap<32, true>::writeval(pov + 0x04,
1336                                            sparc_branch_always +
1337                                            (((- (plt_offset + 4)) >> 2) &
1338                                             0x003fffff));
1339           elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop);
1340
1341           pov += base_plt_entry_size;
1342           plt_offset += base_plt_entry_size;
1343         }
1344
1345       elfcpp::Swap<32, true>::writeval(pov, sparc_nop);
1346       pov += 4;
1347     }
1348
1349   gold_assert(static_cast<section_size_type>(pov - oview) == oview_size);
1350
1351   of->write_output_view(offset, oview_size, oview);
1352 }
1353
1354 // Create a PLT entry for a global symbol.
1355
1356 template<int size, bool big_endian>
1357 void
1358 Target_sparc<size, big_endian>::make_plt_entry(Symbol_table* symtab,
1359                                                Layout* layout,
1360                                                Symbol* gsym)
1361 {
1362   if (gsym->has_plt_offset())
1363     return;
1364
1365   if (this->plt_ == NULL)
1366     {
1367       // Create the GOT sections first.
1368       this->got_section(symtab, layout);
1369
1370       this->plt_ = new Output_data_plt_sparc<size, big_endian>(layout);
1371       layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS,
1372                                       (elfcpp::SHF_ALLOC
1373                                        | elfcpp::SHF_EXECINSTR
1374                                        | elfcpp::SHF_WRITE),
1375                                       this->plt_, false);
1376
1377       // Define _PROCEDURE_LINKAGE_TABLE_ at the start of the .plt section.
1378       symtab->define_in_output_data("_PROCEDURE_LINKAGE_TABLE_", NULL,
1379                                     Symbol_table::PREDEFINED,
1380                                     this->plt_,
1381                                     0, 0, elfcpp::STT_OBJECT,
1382                                     elfcpp::STB_LOCAL,
1383                                     elfcpp::STV_HIDDEN, 0,
1384                                     false, false);
1385     }
1386
1387   this->plt_->add_entry(gsym);
1388 }
1389
1390 // Create a GOT entry for the TLS module index.
1391
1392 template<int size, bool big_endian>
1393 unsigned int
1394 Target_sparc<size, big_endian>::got_mod_index_entry(Symbol_table* symtab,
1395                                                     Layout* layout,
1396                                                     Sized_relobj<size, big_endian>* object)
1397 {
1398   if (this->got_mod_index_offset_ == -1U)
1399     {
1400       gold_assert(symtab != NULL && layout != NULL && object != NULL);
1401       Reloc_section* rela_dyn = this->rela_dyn_section(layout);
1402       Output_data_got<size, big_endian>* got;
1403       unsigned int got_offset;
1404
1405       got = this->got_section(symtab, layout);
1406       got_offset = got->add_constant(0);
1407       rela_dyn->add_local(object, 0,
1408                           (size == 64 ?
1409                            elfcpp::R_SPARC_TLS_DTPMOD64 :
1410                            elfcpp::R_SPARC_TLS_DTPMOD32), got,
1411                           got_offset, 0);
1412       got->add_constant(0);
1413       this->got_mod_index_offset_ = got_offset;
1414     }
1415   return this->got_mod_index_offset_;
1416 }
1417
1418 // Optimize the TLS relocation type based on what we know about the
1419 // symbol.  IS_FINAL is true if the final address of this symbol is
1420 // known at link time.
1421
1422 static tls::Tls_optimization
1423 optimize_tls_reloc(bool is_final, int r_type)
1424 {
1425   // If we are generating a shared library, then we can't do anything
1426   // in the linker.
1427   if (parameters->options().shared())
1428     return tls::TLSOPT_NONE;
1429
1430   switch (r_type)
1431     {
1432     case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1433     case elfcpp::R_SPARC_TLS_GD_LO10:
1434     case elfcpp::R_SPARC_TLS_GD_ADD:
1435     case elfcpp::R_SPARC_TLS_GD_CALL:
1436       // These are General-Dynamic which permits fully general TLS
1437       // access.  Since we know that we are generating an executable,
1438       // we can convert this to Initial-Exec.  If we also know that
1439       // this is a local symbol, we can further switch to Local-Exec.
1440       if (is_final)
1441         return tls::TLSOPT_TO_LE;
1442       return tls::TLSOPT_TO_IE;
1443
1444     case elfcpp::R_SPARC_TLS_LDM_HI22:  // Local-dynamic
1445     case elfcpp::R_SPARC_TLS_LDM_LO10:
1446     case elfcpp::R_SPARC_TLS_LDM_ADD:
1447     case elfcpp::R_SPARC_TLS_LDM_CALL:
1448       // This is Local-Dynamic, which refers to a local symbol in the
1449       // dynamic TLS block.  Since we know that we generating an
1450       // executable, we can switch to Local-Exec.
1451       return tls::TLSOPT_TO_LE;
1452
1453     case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
1454     case elfcpp::R_SPARC_TLS_LDO_LOX10:
1455     case elfcpp::R_SPARC_TLS_LDO_ADD:
1456       // Another type of Local-Dynamic relocation.
1457       return tls::TLSOPT_TO_LE;
1458
1459     case elfcpp::R_SPARC_TLS_IE_HI22:   // Initial-exec
1460     case elfcpp::R_SPARC_TLS_IE_LO10:
1461     case elfcpp::R_SPARC_TLS_IE_LD:
1462     case elfcpp::R_SPARC_TLS_IE_LDX:
1463     case elfcpp::R_SPARC_TLS_IE_ADD:
1464       // These are Initial-Exec relocs which get the thread offset
1465       // from the GOT.  If we know that we are linking against the
1466       // local symbol, we can switch to Local-Exec, which links the
1467       // thread offset into the instruction.
1468       if (is_final)
1469         return tls::TLSOPT_TO_LE;
1470       return tls::TLSOPT_NONE;
1471
1472     case elfcpp::R_SPARC_TLS_LE_HIX22:  // Local-exec
1473     case elfcpp::R_SPARC_TLS_LE_LOX10:
1474       // When we already have Local-Exec, there is nothing further we
1475       // can do.
1476       return tls::TLSOPT_NONE;
1477
1478     default:
1479       gold_unreachable();
1480     }
1481 }
1482
1483 // Generate a PLT entry slot for a call to __tls_get_addr
1484 template<int size, bool big_endian>
1485 void
1486 Target_sparc<size, big_endian>::Scan::generate_tls_call(Symbol_table* symtab,
1487                                                         Layout* layout,
1488                                                         Target_sparc<size, big_endian>* target)
1489 {
1490   Symbol* gsym = target->tls_get_addr_sym(symtab);
1491
1492   target->make_plt_entry(symtab, layout, gsym);
1493 }
1494
1495 // Report an unsupported relocation against a local symbol.
1496
1497 template<int size, bool big_endian>
1498 void
1499 Target_sparc<size, big_endian>::Scan::unsupported_reloc_local(
1500                         Sized_relobj<size, big_endian>* object,
1501                         unsigned int r_type)
1502 {
1503   gold_error(_("%s: unsupported reloc %u against local symbol"),
1504              object->name().c_str(), r_type);
1505 }
1506
1507 // We are about to emit a dynamic relocation of type R_TYPE.  If the
1508 // dynamic linker does not support it, issue an error.
1509
1510 template<int size, bool big_endian>
1511 void
1512 Target_sparc<size, big_endian>::Scan::check_non_pic(Relobj* object, unsigned int r_type)
1513 {
1514   gold_assert(r_type != elfcpp::R_SPARC_NONE);
1515
1516   if (size == 64)
1517     {
1518       switch (r_type)
1519         {
1520           // These are the relocation types supported by glibc for sparc 64-bit.
1521         case elfcpp::R_SPARC_RELATIVE:
1522         case elfcpp::R_SPARC_COPY:
1523         case elfcpp::R_SPARC_64:
1524         case elfcpp::R_SPARC_GLOB_DAT:
1525         case elfcpp::R_SPARC_JMP_SLOT:
1526         case elfcpp::R_SPARC_TLS_DTPMOD64:
1527         case elfcpp::R_SPARC_TLS_DTPOFF64:
1528         case elfcpp::R_SPARC_TLS_TPOFF64:
1529         case elfcpp::R_SPARC_TLS_LE_HIX22:
1530         case elfcpp::R_SPARC_TLS_LE_LOX10:
1531         case elfcpp::R_SPARC_8:
1532         case elfcpp::R_SPARC_16:
1533         case elfcpp::R_SPARC_DISP8:
1534         case elfcpp::R_SPARC_DISP16:
1535         case elfcpp::R_SPARC_DISP32:
1536         case elfcpp::R_SPARC_WDISP30:
1537         case elfcpp::R_SPARC_LO10:
1538         case elfcpp::R_SPARC_HI22:
1539         case elfcpp::R_SPARC_OLO10:
1540         case elfcpp::R_SPARC_H44:
1541         case elfcpp::R_SPARC_M44:
1542         case elfcpp::R_SPARC_L44:
1543         case elfcpp::R_SPARC_HH22:
1544         case elfcpp::R_SPARC_HM10:
1545         case elfcpp::R_SPARC_LM22:
1546         case elfcpp::R_SPARC_UA16:
1547         case elfcpp::R_SPARC_UA32:
1548         case elfcpp::R_SPARC_UA64:
1549           return;
1550
1551         default:
1552           break;
1553         }
1554     }
1555   else
1556     {
1557       switch (r_type)
1558         {
1559           // These are the relocation types supported by glibc for sparc 32-bit.
1560         case elfcpp::R_SPARC_RELATIVE:
1561         case elfcpp::R_SPARC_COPY:
1562         case elfcpp::R_SPARC_GLOB_DAT:
1563         case elfcpp::R_SPARC_32:
1564         case elfcpp::R_SPARC_JMP_SLOT:
1565         case elfcpp::R_SPARC_TLS_DTPMOD32:
1566         case elfcpp::R_SPARC_TLS_DTPOFF32:
1567         case elfcpp::R_SPARC_TLS_TPOFF32:
1568         case elfcpp::R_SPARC_TLS_LE_HIX22:
1569         case elfcpp::R_SPARC_TLS_LE_LOX10:
1570         case elfcpp::R_SPARC_8:
1571         case elfcpp::R_SPARC_16:
1572         case elfcpp::R_SPARC_DISP8:
1573         case elfcpp::R_SPARC_DISP16:
1574         case elfcpp::R_SPARC_DISP32:
1575         case elfcpp::R_SPARC_LO10:
1576         case elfcpp::R_SPARC_WDISP30:
1577         case elfcpp::R_SPARC_HI22:
1578         case elfcpp::R_SPARC_UA16:
1579         case elfcpp::R_SPARC_UA32:
1580           return;
1581
1582         default:
1583           break;
1584         }
1585     }
1586
1587   // This prevents us from issuing more than one error per reloc
1588   // section.  But we can still wind up issuing more than one
1589   // error per object file.
1590   if (this->issued_non_pic_error_)
1591     return;
1592   gold_assert(parameters->options().output_is_position_independent());
1593   object->error(_("requires unsupported dynamic reloc; "
1594                   "recompile with -fPIC"));
1595   this->issued_non_pic_error_ = true;
1596   return;
1597 }
1598
1599 // Scan a relocation for a local symbol.
1600
1601 template<int size, bool big_endian>
1602 inline void
1603 Target_sparc<size, big_endian>::Scan::local(
1604                         Symbol_table* symtab,
1605                         Layout* layout,
1606                         Target_sparc<size, big_endian>* target,
1607                         Sized_relobj<size, big_endian>* object,
1608                         unsigned int data_shndx,
1609                         Output_section* output_section,
1610                         const elfcpp::Rela<size, big_endian>& reloc,
1611                         unsigned int r_type,
1612                         const elfcpp::Sym<size, big_endian>& lsym)
1613 {
1614   unsigned int orig_r_type = r_type;
1615
1616   r_type &= 0xff;
1617   switch (r_type)
1618     {
1619     case elfcpp::R_SPARC_NONE:
1620     case elfcpp::R_SPARC_REGISTER:
1621     case elfcpp::R_SPARC_GNU_VTINHERIT:
1622     case elfcpp::R_SPARC_GNU_VTENTRY:
1623       break;
1624
1625     case elfcpp::R_SPARC_64:
1626     case elfcpp::R_SPARC_32:
1627       // If building a shared library (or a position-independent
1628       // executable), we need to create a dynamic relocation for
1629       // this location. The relocation applied at link time will
1630       // apply the link-time value, so we flag the location with
1631       // an R_SPARC_RELATIVE relocation so the dynamic loader can
1632       // relocate it easily.
1633       if (parameters->options().output_is_position_independent())
1634         {
1635           Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1636           unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1637           rela_dyn->add_local_relative(object, r_sym, elfcpp::R_SPARC_RELATIVE,
1638                                        output_section, data_shndx,
1639                                        reloc.get_r_offset(),
1640                                        reloc.get_r_addend());
1641         }
1642       break;
1643
1644     case elfcpp::R_SPARC_HIX22:
1645     case elfcpp::R_SPARC_LOX10:
1646     case elfcpp::R_SPARC_H44:
1647     case elfcpp::R_SPARC_M44:
1648     case elfcpp::R_SPARC_L44:
1649     case elfcpp::R_SPARC_HH22:
1650     case elfcpp::R_SPARC_HM10:
1651     case elfcpp::R_SPARC_LM22:
1652     case elfcpp::R_SPARC_UA64:
1653     case elfcpp::R_SPARC_UA32:
1654     case elfcpp::R_SPARC_UA16:
1655     case elfcpp::R_SPARC_HI22:
1656     case elfcpp::R_SPARC_LO10:
1657     case elfcpp::R_SPARC_OLO10:
1658     case elfcpp::R_SPARC_16:
1659     case elfcpp::R_SPARC_11:
1660     case elfcpp::R_SPARC_10:
1661     case elfcpp::R_SPARC_8:
1662     case elfcpp::R_SPARC_7:
1663     case elfcpp::R_SPARC_6:
1664     case elfcpp::R_SPARC_5:
1665       // If building a shared library (or a position-independent
1666       // executable), we need to create a dynamic relocation for
1667       // this location.
1668       if (parameters->options().output_is_position_independent())
1669         {
1670           Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1671
1672           check_non_pic(object, r_type);
1673           if (lsym.get_st_type() != elfcpp::STT_SECTION)
1674             {
1675               unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1676               rela_dyn->add_local(object, r_sym, orig_r_type, output_section,
1677                                   data_shndx, reloc.get_r_offset(),
1678                                   reloc.get_r_addend());
1679             }
1680           else
1681             {
1682               unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1683               gold_assert(lsym.get_st_value() == 0);
1684               rela_dyn->add_local_relative(object, r_sym, orig_r_type,
1685                                            output_section, data_shndx,
1686                                            reloc.get_r_offset(),
1687                                            reloc.get_r_addend());
1688             }
1689         }
1690       break;
1691
1692     case elfcpp::R_SPARC_WDISP30:
1693     case elfcpp::R_SPARC_WDISP22:
1694     case elfcpp::R_SPARC_WDISP19:
1695     case elfcpp::R_SPARC_WDISP16:
1696     case elfcpp::R_SPARC_DISP8:
1697     case elfcpp::R_SPARC_DISP16:
1698     case elfcpp::R_SPARC_DISP32:
1699     case elfcpp::R_SPARC_DISP64:
1700     case elfcpp::R_SPARC_PC10:
1701     case elfcpp::R_SPARC_PC22:
1702       break;
1703
1704     case elfcpp::R_SPARC_GOT10:
1705     case elfcpp::R_SPARC_GOT13:
1706     case elfcpp::R_SPARC_GOT22:
1707       {
1708         // The symbol requires a GOT entry.
1709         Output_data_got<size, big_endian>* got;
1710         unsigned int r_sym;
1711
1712         got = target->got_section(symtab, layout);
1713         r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1714
1715         // If we are generating a shared object, we need to add a
1716         // dynamic relocation for this symbol's GOT entry.
1717         if (parameters->options().output_is_position_independent())
1718           {
1719             if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD))
1720               {
1721                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1722                 unsigned int off;
1723
1724                 off = got->add_constant(0);
1725                 object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off);
1726                 rela_dyn->add_local_relative(object, r_sym,
1727                                              elfcpp::R_SPARC_RELATIVE,
1728                                              got, off, 0);
1729               }
1730           }
1731         else
1732           got->add_local(object, r_sym, GOT_TYPE_STANDARD);
1733       }
1734       break;
1735
1736       // These are initial TLS relocs, which are expected when
1737       // linking.
1738     case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1739     case elfcpp::R_SPARC_TLS_GD_LO10:
1740     case elfcpp::R_SPARC_TLS_GD_ADD:
1741     case elfcpp::R_SPARC_TLS_GD_CALL:
1742     case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic
1743     case elfcpp::R_SPARC_TLS_LDM_LO10:
1744     case elfcpp::R_SPARC_TLS_LDM_ADD:
1745     case elfcpp::R_SPARC_TLS_LDM_CALL:
1746     case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
1747     case elfcpp::R_SPARC_TLS_LDO_LOX10:
1748     case elfcpp::R_SPARC_TLS_LDO_ADD:
1749     case elfcpp::R_SPARC_TLS_IE_HI22:   // Initial-exec
1750     case elfcpp::R_SPARC_TLS_IE_LO10:
1751     case elfcpp::R_SPARC_TLS_IE_LD:
1752     case elfcpp::R_SPARC_TLS_IE_LDX:
1753     case elfcpp::R_SPARC_TLS_IE_ADD:
1754     case elfcpp::R_SPARC_TLS_LE_HIX22:  // Local-exec
1755     case elfcpp::R_SPARC_TLS_LE_LOX10:
1756       {
1757         bool output_is_shared = parameters->options().shared();
1758         const tls::Tls_optimization optimized_type
1759             = optimize_tls_reloc(!output_is_shared, r_type);
1760         switch (r_type)
1761           {
1762           case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1763           case elfcpp::R_SPARC_TLS_GD_LO10:
1764           case elfcpp::R_SPARC_TLS_GD_ADD:
1765           case elfcpp::R_SPARC_TLS_GD_CALL:
1766             if (optimized_type == tls::TLSOPT_NONE)
1767               {
1768                 // Create a pair of GOT entries for the module index and
1769                 // dtv-relative offset.
1770                 Output_data_got<size, big_endian>* got
1771                     = target->got_section(symtab, layout);
1772                 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1773                 unsigned int shndx = lsym.get_st_shndx();
1774                 bool is_ordinary;
1775                 shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary);
1776                 if (!is_ordinary)
1777                   object->error(_("local symbol %u has bad shndx %u"),
1778                                 r_sym, shndx);
1779                 else
1780                   got->add_local_pair_with_rela(object, r_sym,
1781                                                 lsym.get_st_shndx(),
1782                                                 GOT_TYPE_TLS_PAIR,
1783                                                 target->rela_dyn_section(layout),
1784                                                 (size == 64
1785                                                  ? elfcpp::R_SPARC_TLS_DTPMOD64
1786                                                  : elfcpp::R_SPARC_TLS_DTPMOD32),
1787                                                  0);
1788                 if (r_type == elfcpp::R_SPARC_TLS_GD_CALL)
1789                   generate_tls_call(symtab, layout, target);
1790               }
1791             else if (optimized_type != tls::TLSOPT_TO_LE)
1792               unsupported_reloc_local(object, r_type);
1793             break;
1794
1795           case elfcpp::R_SPARC_TLS_LDM_HI22 :   // Local-dynamic
1796           case elfcpp::R_SPARC_TLS_LDM_LO10:
1797           case elfcpp::R_SPARC_TLS_LDM_ADD:
1798           case elfcpp::R_SPARC_TLS_LDM_CALL:
1799             if (optimized_type == tls::TLSOPT_NONE)
1800               {
1801                 // Create a GOT entry for the module index.
1802                 target->got_mod_index_entry(symtab, layout, object);
1803
1804                 if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL)
1805                   generate_tls_call(symtab, layout, target);
1806               }
1807             else if (optimized_type != tls::TLSOPT_TO_LE)
1808               unsupported_reloc_local(object, r_type);
1809             break;
1810
1811           case elfcpp::R_SPARC_TLS_LDO_HIX22:   // Alternate local-dynamic
1812           case elfcpp::R_SPARC_TLS_LDO_LOX10:
1813           case elfcpp::R_SPARC_TLS_LDO_ADD:
1814             break;
1815
1816           case elfcpp::R_SPARC_TLS_IE_HI22:     // Initial-exec
1817           case elfcpp::R_SPARC_TLS_IE_LO10:
1818           case elfcpp::R_SPARC_TLS_IE_LD:
1819           case elfcpp::R_SPARC_TLS_IE_LDX:
1820           case elfcpp::R_SPARC_TLS_IE_ADD:
1821             layout->set_has_static_tls();
1822             if (optimized_type == tls::TLSOPT_NONE)
1823               {
1824                 // Create a GOT entry for the tp-relative offset.
1825                 Output_data_got<size, big_endian>* got
1826                   = target->got_section(symtab, layout);
1827                 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1828
1829                 if (!object->local_has_got_offset(r_sym, GOT_TYPE_TLS_OFFSET))
1830                   {
1831                     Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1832                     unsigned int off = got->add_constant(0);
1833
1834                     object->set_local_got_offset(r_sym, GOT_TYPE_TLS_OFFSET,
1835                                                  off);
1836                     rela_dyn->add_local_relative(object, r_sym,
1837                                                  (size == 64 ?
1838                                                   elfcpp::R_SPARC_TLS_TPOFF64 :
1839                                                   elfcpp::R_SPARC_TLS_TPOFF32),
1840                                                  got, off, 0);
1841                   }
1842               }
1843             else if (optimized_type != tls::TLSOPT_TO_LE)
1844               unsupported_reloc_local(object, r_type);
1845             break;
1846
1847           case elfcpp::R_SPARC_TLS_LE_HIX22:    // Local-exec
1848           case elfcpp::R_SPARC_TLS_LE_LOX10:
1849             layout->set_has_static_tls();
1850             if (output_is_shared)
1851               {
1852                 // We need to create a dynamic relocation.
1853                 gold_assert(lsym.get_st_type() != elfcpp::STT_SECTION);
1854                 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1855                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1856                 rela_dyn->add_local_relative(object, r_sym, r_type,
1857                                              output_section, data_shndx,
1858                                              reloc.get_r_offset(), 0);
1859               }
1860             break;
1861           }
1862       }
1863       break;
1864
1865       // These are relocations which should only be seen by the
1866       // dynamic linker, and should never be seen here.
1867     case elfcpp::R_SPARC_COPY:
1868     case elfcpp::R_SPARC_GLOB_DAT:
1869     case elfcpp::R_SPARC_JMP_SLOT:
1870     case elfcpp::R_SPARC_RELATIVE:
1871     case elfcpp::R_SPARC_TLS_DTPMOD64:
1872     case elfcpp::R_SPARC_TLS_DTPMOD32:
1873     case elfcpp::R_SPARC_TLS_DTPOFF64:
1874     case elfcpp::R_SPARC_TLS_DTPOFF32:
1875     case elfcpp::R_SPARC_TLS_TPOFF64:
1876     case elfcpp::R_SPARC_TLS_TPOFF32:
1877       gold_error(_("%s: unexpected reloc %u in object file"),
1878                  object->name().c_str(), r_type);
1879       break;
1880
1881     default:
1882       unsupported_reloc_local(object, r_type);
1883       break;
1884     }
1885 }
1886
1887 // Report an unsupported relocation against a global symbol.
1888
1889 template<int size, bool big_endian>
1890 void
1891 Target_sparc<size, big_endian>::Scan::unsupported_reloc_global(
1892                         Sized_relobj<size, big_endian>* object,
1893                         unsigned int r_type,
1894                         Symbol* gsym)
1895 {
1896   gold_error(_("%s: unsupported reloc %u against global symbol %s"),
1897              object->name().c_str(), r_type, gsym->demangled_name().c_str());
1898 }
1899
1900 // Scan a relocation for a global symbol.
1901
1902 template<int size, bool big_endian>
1903 inline void
1904 Target_sparc<size, big_endian>::Scan::global(
1905                                 Symbol_table* symtab,
1906                                 Layout* layout,
1907                                 Target_sparc<size, big_endian>* target,
1908                                 Sized_relobj<size, big_endian>* object,
1909                                 unsigned int data_shndx,
1910                                 Output_section* output_section,
1911                                 const elfcpp::Rela<size, big_endian>& reloc,
1912                                 unsigned int r_type,
1913                                 Symbol* gsym)
1914 {
1915   unsigned int orig_r_type = r_type;
1916
1917   // A reference to _GLOBAL_OFFSET_TABLE_ implies that we need a got
1918   // section.  We check here to avoid creating a dynamic reloc against
1919   // _GLOBAL_OFFSET_TABLE_.
1920   if (!target->has_got_section()
1921       && strcmp(gsym->name(), "_GLOBAL_OFFSET_TABLE_") == 0)
1922     target->got_section(symtab, layout);
1923
1924   r_type &= 0xff;
1925   switch (r_type)
1926     {
1927     case elfcpp::R_SPARC_NONE:
1928     case elfcpp::R_SPARC_REGISTER:
1929     case elfcpp::R_SPARC_GNU_VTINHERIT:
1930     case elfcpp::R_SPARC_GNU_VTENTRY:
1931       break;
1932
1933     case elfcpp::R_SPARC_PLT64:
1934     case elfcpp::R_SPARC_PLT32:
1935     case elfcpp::R_SPARC_HIPLT22:
1936     case elfcpp::R_SPARC_LOPLT10:
1937     case elfcpp::R_SPARC_PCPLT32:
1938     case elfcpp::R_SPARC_PCPLT22:
1939     case elfcpp::R_SPARC_PCPLT10:
1940     case elfcpp::R_SPARC_WPLT30:
1941       // If the symbol is fully resolved, this is just a PC32 reloc.
1942       // Otherwise we need a PLT entry.
1943       if (gsym->final_value_is_known())
1944         break;
1945       // If building a shared library, we can also skip the PLT entry
1946       // if the symbol is defined in the output file and is protected
1947       // or hidden.
1948       if (gsym->is_defined()
1949           && !gsym->is_from_dynobj()
1950           && !gsym->is_preemptible())
1951         break;
1952       target->make_plt_entry(symtab, layout, gsym);
1953       break;
1954
1955     case elfcpp::R_SPARC_DISP8:
1956     case elfcpp::R_SPARC_DISP16:
1957     case elfcpp::R_SPARC_DISP32:
1958     case elfcpp::R_SPARC_DISP64:
1959     case elfcpp::R_SPARC_PC_HH22:
1960     case elfcpp::R_SPARC_PC_HM10:
1961     case elfcpp::R_SPARC_PC_LM22:
1962     case elfcpp::R_SPARC_PC10:
1963     case elfcpp::R_SPARC_PC22:
1964     case elfcpp::R_SPARC_WDISP30:
1965     case elfcpp::R_SPARC_WDISP22:
1966     case elfcpp::R_SPARC_WDISP19:
1967     case elfcpp::R_SPARC_WDISP16:
1968       {
1969         if (gsym->needs_plt_entry())
1970           target->make_plt_entry(symtab, layout, gsym);
1971         // Make a dynamic relocation if necessary.
1972         int flags = Symbol::NON_PIC_REF;
1973         if (gsym->type() == elfcpp::STT_FUNC)
1974           flags |= Symbol::FUNCTION_CALL;
1975         if (gsym->needs_dynamic_reloc(flags))
1976           {
1977             if (gsym->may_need_copy_reloc())
1978               {
1979                 target->copy_reloc(symtab, layout, object,
1980                                    data_shndx, output_section, gsym,
1981                                    reloc);
1982               }
1983             else
1984               {
1985                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1986                 check_non_pic(object, r_type);
1987                 rela_dyn->add_global(gsym, orig_r_type, output_section, object,
1988                                      data_shndx, reloc.get_r_offset(),
1989                                      reloc.get_r_addend());
1990               }
1991           }
1992       }
1993       break;
1994
1995     case elfcpp::R_SPARC_UA64:
1996     case elfcpp::R_SPARC_64:
1997     case elfcpp::R_SPARC_HIX22:
1998     case elfcpp::R_SPARC_LOX10:
1999     case elfcpp::R_SPARC_H44:
2000     case elfcpp::R_SPARC_M44:
2001     case elfcpp::R_SPARC_L44:
2002     case elfcpp::R_SPARC_HH22:
2003     case elfcpp::R_SPARC_HM10:
2004     case elfcpp::R_SPARC_LM22:
2005     case elfcpp::R_SPARC_HI22:
2006     case elfcpp::R_SPARC_LO10:
2007     case elfcpp::R_SPARC_OLO10:
2008     case elfcpp::R_SPARC_UA32:
2009     case elfcpp::R_SPARC_32:
2010     case elfcpp::R_SPARC_UA16:
2011     case elfcpp::R_SPARC_16:
2012     case elfcpp::R_SPARC_11:
2013     case elfcpp::R_SPARC_10:
2014     case elfcpp::R_SPARC_8:
2015     case elfcpp::R_SPARC_7:
2016     case elfcpp::R_SPARC_6:
2017     case elfcpp::R_SPARC_5:
2018       {
2019         // Make a PLT entry if necessary.
2020         if (gsym->needs_plt_entry())
2021           {
2022             target->make_plt_entry(symtab, layout, gsym);
2023             // Since this is not a PC-relative relocation, we may be
2024             // taking the address of a function. In that case we need to
2025             // set the entry in the dynamic symbol table to the address of
2026             // the PLT entry.
2027             if (gsym->is_from_dynobj() && !parameters->options().shared())
2028               gsym->set_needs_dynsym_value();
2029           }
2030         // Make a dynamic relocation if necessary.
2031         if (gsym->needs_dynamic_reloc(Symbol::ABSOLUTE_REF))
2032           {
2033             if (gsym->may_need_copy_reloc())
2034               {
2035                 target->copy_reloc(symtab, layout, object,
2036                                    data_shndx, output_section, gsym, reloc);
2037               }
2038             else if ((r_type == elfcpp::R_SPARC_32
2039                       || r_type == elfcpp::R_SPARC_64)
2040                      && gsym->can_use_relative_reloc(false))
2041               {
2042                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2043                 rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE,
2044                                               output_section, object,
2045                                               data_shndx, reloc.get_r_offset(),
2046                                               reloc.get_r_addend());
2047               }
2048             else
2049               {
2050                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2051
2052                 check_non_pic(object, r_type);
2053                 if (gsym->is_from_dynobj()
2054                     || gsym->is_undefined()
2055                     || gsym->is_preemptible())
2056                   rela_dyn->add_global(gsym, orig_r_type, output_section,
2057                                        object, data_shndx,
2058                                        reloc.get_r_offset(),
2059                                        reloc.get_r_addend());
2060                 else
2061                   rela_dyn->add_global_relative(gsym, orig_r_type,
2062                                                 output_section, object,
2063                                                 data_shndx,
2064                                                 reloc.get_r_offset(),
2065                                                 reloc.get_r_addend());
2066               }
2067           }
2068       }
2069       break;
2070
2071     case elfcpp::R_SPARC_GOT10:
2072     case elfcpp::R_SPARC_GOT13:
2073     case elfcpp::R_SPARC_GOT22:
2074       {
2075         // The symbol requires a GOT entry.
2076         Output_data_got<size, big_endian>* got;
2077
2078         got = target->got_section(symtab, layout);
2079         if (gsym->final_value_is_known())
2080           got->add_global(gsym, GOT_TYPE_STANDARD);
2081         else
2082           {
2083             // If this symbol is not fully resolved, we need to add a
2084             // dynamic relocation for it.
2085             Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2086             if (gsym->is_from_dynobj()
2087                 || gsym->is_undefined()
2088                 || gsym->is_preemptible())
2089               got->add_global_with_rela(gsym, GOT_TYPE_STANDARD, rela_dyn,
2090                                         elfcpp::R_SPARC_GLOB_DAT);
2091             else if (!gsym->has_got_offset(GOT_TYPE_STANDARD))
2092               {
2093                 unsigned int off = got->add_constant(0);
2094
2095                 gsym->set_got_offset(GOT_TYPE_STANDARD, off);
2096                 rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE,
2097                                               got, off, 0);
2098               }
2099           }
2100       }
2101       break;
2102
2103       // These are initial tls relocs, which are expected when
2104       // linking.
2105     case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2106     case elfcpp::R_SPARC_TLS_GD_LO10:
2107     case elfcpp::R_SPARC_TLS_GD_ADD:
2108     case elfcpp::R_SPARC_TLS_GD_CALL:
2109     case elfcpp::R_SPARC_TLS_LDM_HI22:  // Local-dynamic
2110     case elfcpp::R_SPARC_TLS_LDM_LO10:
2111     case elfcpp::R_SPARC_TLS_LDM_ADD:
2112     case elfcpp::R_SPARC_TLS_LDM_CALL:
2113     case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
2114     case elfcpp::R_SPARC_TLS_LDO_LOX10:
2115     case elfcpp::R_SPARC_TLS_LDO_ADD:
2116     case elfcpp::R_SPARC_TLS_LE_HIX22:
2117     case elfcpp::R_SPARC_TLS_LE_LOX10:
2118     case elfcpp::R_SPARC_TLS_IE_HI22:   // Initial-exec
2119     case elfcpp::R_SPARC_TLS_IE_LO10:
2120     case elfcpp::R_SPARC_TLS_IE_LD:
2121     case elfcpp::R_SPARC_TLS_IE_LDX:
2122     case elfcpp::R_SPARC_TLS_IE_ADD:
2123       {
2124         const bool is_final = gsym->final_value_is_known();
2125         const tls::Tls_optimization optimized_type
2126             = optimize_tls_reloc(is_final, r_type);
2127         switch (r_type)
2128           {
2129           case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2130           case elfcpp::R_SPARC_TLS_GD_LO10:
2131           case elfcpp::R_SPARC_TLS_GD_ADD:
2132           case elfcpp::R_SPARC_TLS_GD_CALL:
2133             if (optimized_type == tls::TLSOPT_NONE)
2134               {
2135                 // Create a pair of GOT entries for the module index and
2136                 // dtv-relative offset.
2137                 Output_data_got<size, big_endian>* got
2138                     = target->got_section(symtab, layout);
2139                 got->add_global_pair_with_rela(gsym, GOT_TYPE_TLS_PAIR,
2140                                                target->rela_dyn_section(layout),
2141                                                (size == 64 ?
2142                                                 elfcpp::R_SPARC_TLS_DTPMOD64 :
2143                                                 elfcpp::R_SPARC_TLS_DTPMOD32),
2144                                                (size == 64 ?
2145                                                 elfcpp::R_SPARC_TLS_DTPOFF64 :
2146                                                 elfcpp::R_SPARC_TLS_DTPOFF32));
2147
2148                 // Emit R_SPARC_WPLT30 against "__tls_get_addr"
2149                 if (r_type == elfcpp::R_SPARC_TLS_GD_CALL)
2150                   generate_tls_call(symtab, layout, target);
2151               }
2152             else if (optimized_type == tls::TLSOPT_TO_IE)
2153               {
2154                 // Create a GOT entry for the tp-relative offset.
2155                 Output_data_got<size, big_endian>* got
2156                     = target->got_section(symtab, layout);
2157                 got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET,
2158                                           target->rela_dyn_section(layout),
2159                                           (size == 64 ?
2160                                            elfcpp::R_SPARC_TLS_TPOFF64 :
2161                                            elfcpp::R_SPARC_TLS_TPOFF32));
2162               }
2163             else if (optimized_type != tls::TLSOPT_TO_LE)
2164               unsupported_reloc_global(object, r_type, gsym);
2165             break;
2166
2167           case elfcpp::R_SPARC_TLS_LDM_HI22:    // Local-dynamic
2168           case elfcpp::R_SPARC_TLS_LDM_LO10:
2169           case elfcpp::R_SPARC_TLS_LDM_ADD:
2170           case elfcpp::R_SPARC_TLS_LDM_CALL:
2171             if (optimized_type == tls::TLSOPT_NONE)
2172               {
2173                 // Create a GOT entry for the module index.
2174                 target->got_mod_index_entry(symtab, layout, object);
2175
2176                 if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL)
2177                   generate_tls_call(symtab, layout, target);
2178               }
2179             else if (optimized_type != tls::TLSOPT_TO_LE)
2180               unsupported_reloc_global(object, r_type, gsym);
2181             break;
2182
2183           case elfcpp::R_SPARC_TLS_LDO_HIX22:   // Alternate local-dynamic
2184           case elfcpp::R_SPARC_TLS_LDO_LOX10:
2185           case elfcpp::R_SPARC_TLS_LDO_ADD:
2186             break;
2187
2188           case elfcpp::R_SPARC_TLS_LE_HIX22:
2189           case elfcpp::R_SPARC_TLS_LE_LOX10:
2190             layout->set_has_static_tls();
2191             if (parameters->options().shared())
2192               {
2193                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2194                 rela_dyn->add_global_relative(gsym, orig_r_type,
2195                                               output_section, object,
2196                                               data_shndx, reloc.get_r_offset(),
2197                                               0);
2198               }
2199             break;
2200
2201           case elfcpp::R_SPARC_TLS_IE_HI22:     // Initial-exec
2202           case elfcpp::R_SPARC_TLS_IE_LO10:
2203           case elfcpp::R_SPARC_TLS_IE_LD:
2204           case elfcpp::R_SPARC_TLS_IE_LDX:
2205           case elfcpp::R_SPARC_TLS_IE_ADD:
2206             layout->set_has_static_tls();
2207             if (optimized_type == tls::TLSOPT_NONE)
2208               {
2209                 // Create a GOT entry for the tp-relative offset.
2210                 Output_data_got<size, big_endian>* got
2211                   = target->got_section(symtab, layout);
2212                 got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET,
2213                                           target->rela_dyn_section(layout),
2214                                           (size == 64 ?
2215                                            elfcpp::R_SPARC_TLS_TPOFF64 :
2216                                            elfcpp::R_SPARC_TLS_TPOFF32));
2217               }
2218             else if (optimized_type != tls::TLSOPT_TO_LE)
2219               unsupported_reloc_global(object, r_type, gsym);
2220             break;
2221           }
2222       }
2223       break;
2224
2225       // These are relocations which should only be seen by the
2226       // dynamic linker, and should never be seen here.
2227     case elfcpp::R_SPARC_COPY:
2228     case elfcpp::R_SPARC_GLOB_DAT:
2229     case elfcpp::R_SPARC_JMP_SLOT:
2230     case elfcpp::R_SPARC_RELATIVE:
2231     case elfcpp::R_SPARC_TLS_DTPMOD64:
2232     case elfcpp::R_SPARC_TLS_DTPMOD32:
2233     case elfcpp::R_SPARC_TLS_DTPOFF64:
2234     case elfcpp::R_SPARC_TLS_DTPOFF32:
2235     case elfcpp::R_SPARC_TLS_TPOFF64:
2236     case elfcpp::R_SPARC_TLS_TPOFF32:
2237       gold_error(_("%s: unexpected reloc %u in object file"),
2238                  object->name().c_str(), r_type);
2239       break;
2240
2241     default:
2242       unsupported_reloc_global(object, r_type, gsym);
2243       break;
2244     }
2245 }
2246
2247 // Process relocations for gc.
2248
2249 template<int size, bool big_endian>
2250 void
2251 Target_sparc<size, big_endian>::gc_process_relocs(
2252                         Symbol_table* symtab,
2253                         Layout* layout,
2254                         Sized_relobj<size, big_endian>* object,
2255                         unsigned int data_shndx,
2256                         unsigned int,
2257                         const unsigned char* prelocs,
2258                         size_t reloc_count,
2259                         Output_section* output_section,
2260                         bool needs_special_offset_handling,
2261                         size_t local_symbol_count,
2262                         const unsigned char* plocal_symbols)
2263 {
2264   typedef Target_sparc<size, big_endian> Sparc;
2265   typedef typename Target_sparc<size, big_endian>::Scan Scan;
2266
2267   gold::gc_process_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>(
2268     symtab,
2269     layout,
2270     this,
2271     object,
2272     data_shndx,
2273     prelocs,
2274     reloc_count,
2275     output_section,
2276     needs_special_offset_handling,
2277     local_symbol_count,
2278     plocal_symbols);
2279 }
2280
2281 // Scan relocations for a section.
2282
2283 template<int size, bool big_endian>
2284 void
2285 Target_sparc<size, big_endian>::scan_relocs(
2286                         Symbol_table* symtab,
2287                         Layout* layout,
2288                         Sized_relobj<size, big_endian>* object,
2289                         unsigned int data_shndx,
2290                         unsigned int sh_type,
2291                         const unsigned char* prelocs,
2292                         size_t reloc_count,
2293                         Output_section* output_section,
2294                         bool needs_special_offset_handling,
2295                         size_t local_symbol_count,
2296                         const unsigned char* plocal_symbols)
2297 {
2298   typedef Target_sparc<size, big_endian> Sparc;
2299   typedef typename Target_sparc<size, big_endian>::Scan Scan;
2300
2301   if (sh_type == elfcpp::SHT_REL)
2302     {
2303       gold_error(_("%s: unsupported REL reloc section"),
2304                  object->name().c_str());
2305       return;
2306     }
2307
2308   gold::scan_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>(
2309     symtab,
2310     layout,
2311     this,
2312     object,
2313     data_shndx,
2314     prelocs,
2315     reloc_count,
2316     output_section,
2317     needs_special_offset_handling,
2318     local_symbol_count,
2319     plocal_symbols);
2320 }
2321
2322 // Finalize the sections.
2323
2324 template<int size, bool big_endian>
2325 void
2326 Target_sparc<size, big_endian>::do_finalize_sections(
2327     Layout* layout,
2328     const Input_objects*,
2329     Symbol_table*)
2330 {
2331   // Fill in some more dynamic tags.
2332   Output_data_dynamic* const odyn = layout->dynamic_data();
2333   if (odyn != NULL)
2334     {
2335       if (this->plt_ != NULL
2336           && this->plt_->output_section() != NULL)
2337         {
2338           const Output_data* od = this->plt_->rel_plt();
2339           odyn->add_section_size(elfcpp::DT_PLTRELSZ, od);
2340           odyn->add_section_address(elfcpp::DT_JMPREL, od);
2341           odyn->add_constant(elfcpp::DT_PLTREL, elfcpp::DT_RELA);
2342
2343           odyn->add_section_address(elfcpp::DT_PLTGOT, this->plt_);
2344         }
2345
2346       if (this->rela_dyn_ != NULL
2347           && this->rela_dyn_->output_section() != NULL)
2348         {
2349           const Output_data* od = this->rela_dyn_;
2350           odyn->add_section_address(elfcpp::DT_RELA, od);
2351           odyn->add_section_size(elfcpp::DT_RELASZ, od);
2352           odyn->add_constant(elfcpp::DT_RELAENT,
2353                              elfcpp::Elf_sizes<size>::rela_size);
2354         }
2355
2356       if (!parameters->options().shared())
2357         {
2358           // The value of the DT_DEBUG tag is filled in by the dynamic
2359           // linker at run time, and used by the debugger.
2360           odyn->add_constant(elfcpp::DT_DEBUG, 0);
2361         }
2362     }
2363
2364   // Emit any relocs we saved in an attempt to avoid generating COPY
2365   // relocs.
2366   if (this->copy_relocs_.any_saved_relocs())
2367     this->copy_relocs_.emit(this->rela_dyn_section(layout));
2368 }
2369
2370 // Perform a relocation.
2371
2372 template<int size, bool big_endian>
2373 inline bool
2374 Target_sparc<size, big_endian>::Relocate::relocate(
2375                         const Relocate_info<size, big_endian>* relinfo,
2376                         Target_sparc* target,
2377                         Output_section*,
2378                         size_t relnum,
2379                         const elfcpp::Rela<size, big_endian>& rela,
2380                         unsigned int r_type,
2381                         const Sized_symbol<size>* gsym,
2382                         const Symbol_value<size>* psymval,
2383                         unsigned char* view,
2384                         typename elfcpp::Elf_types<size>::Elf_Addr address,
2385                         section_size_type view_size)
2386 {
2387   r_type &= 0xff;
2388
2389   if (this->ignore_gd_add_)
2390     {
2391       if (r_type != elfcpp::R_SPARC_TLS_GD_ADD)
2392         gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2393                                _("missing expected TLS relocation"));
2394       else
2395         {
2396           this->ignore_gd_add_ = false;
2397           return false;
2398         }
2399     }
2400
2401   typedef Sparc_relocate_functions<size, big_endian> Reloc;
2402
2403   // Pick the value to use for symbols defined in shared objects.
2404   Symbol_value<size> symval;
2405   if (gsym != NULL
2406       && gsym->use_plt_offset(r_type == elfcpp::R_SPARC_DISP8
2407                               || r_type == elfcpp::R_SPARC_DISP16
2408                               || r_type == elfcpp::R_SPARC_DISP32
2409                               || r_type == elfcpp::R_SPARC_DISP64
2410                               || r_type == elfcpp::R_SPARC_PC_HH22
2411                               || r_type == elfcpp::R_SPARC_PC_HM10
2412                               || r_type == elfcpp::R_SPARC_PC_LM22
2413                               || r_type == elfcpp::R_SPARC_PC10
2414                               || r_type == elfcpp::R_SPARC_PC22
2415                               || r_type == elfcpp::R_SPARC_WDISP30
2416                               || r_type == elfcpp::R_SPARC_WDISP22
2417                               || r_type == elfcpp::R_SPARC_WDISP19
2418                               || r_type == elfcpp::R_SPARC_WDISP16))
2419     {
2420       elfcpp::Elf_Xword value;
2421
2422       value = target->plt_section()->address() + gsym->plt_offset();
2423
2424       symval.set_output_value(value);
2425
2426       psymval = &symval;
2427     }
2428
2429   const Sized_relobj<size, big_endian>* object = relinfo->object;
2430   const elfcpp::Elf_Xword addend = rela.get_r_addend();
2431
2432   // Get the GOT offset if needed.  Unlike i386 and x86_64, our GOT
2433   // pointer points to the beginning, not the end, of the table.
2434   // So we just use the plain offset.
2435   bool have_got_offset = false;
2436   unsigned int got_offset = 0;
2437   switch (r_type)
2438     {
2439     case elfcpp::R_SPARC_GOT10:
2440     case elfcpp::R_SPARC_GOT13:
2441     case elfcpp::R_SPARC_GOT22:
2442       if (gsym != NULL)
2443         {
2444           gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD));
2445           got_offset = gsym->got_offset(GOT_TYPE_STANDARD);
2446         }
2447       else
2448         {
2449           unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
2450           gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD));
2451           got_offset = object->local_got_offset(r_sym, GOT_TYPE_STANDARD);
2452         }
2453       have_got_offset = true;
2454       break;
2455
2456     default:
2457       break;
2458     }
2459
2460   switch (r_type)
2461     {
2462     case elfcpp::R_SPARC_NONE:
2463     case elfcpp::R_SPARC_REGISTER:
2464     case elfcpp::R_SPARC_GNU_VTINHERIT:
2465     case elfcpp::R_SPARC_GNU_VTENTRY:
2466       break;
2467
2468     case elfcpp::R_SPARC_8:
2469       Relocate_functions<size, big_endian>::rela8(view, object,
2470                                                   psymval, addend);
2471       break;
2472
2473     case elfcpp::R_SPARC_16:
2474       Relocate_functions<size, big_endian>::rela16(view, object,
2475                                                    psymval, addend);
2476       break;
2477
2478     case elfcpp::R_SPARC_32:
2479       if (!parameters->options().output_is_position_independent())
2480         Relocate_functions<size, big_endian>::rela32(view, object,
2481                                                      psymval, addend);
2482       break;
2483
2484     case elfcpp::R_SPARC_DISP8:
2485       Reloc::disp8(view, object, psymval, addend, address);
2486       break;
2487
2488     case elfcpp::R_SPARC_DISP16:
2489       Reloc::disp16(view, object, psymval, addend, address);
2490       break;
2491
2492     case elfcpp::R_SPARC_DISP32:
2493       Reloc::disp32(view, object, psymval, addend, address);
2494       break;
2495
2496     case elfcpp::R_SPARC_DISP64:
2497       Reloc::disp64(view, object, psymval, addend, address);
2498       break;
2499
2500     case elfcpp::R_SPARC_WDISP30:
2501     case elfcpp::R_SPARC_WPLT30:
2502       Reloc::wdisp30(view, object, psymval, addend, address);
2503       break;
2504
2505     case elfcpp::R_SPARC_WDISP22:
2506       Reloc::wdisp22(view, object, psymval, addend, address);
2507       break;
2508
2509     case elfcpp::R_SPARC_WDISP19:
2510       Reloc::wdisp19(view, object, psymval, addend, address);
2511       break;
2512
2513     case elfcpp::R_SPARC_WDISP16:
2514       Reloc::wdisp16(view, object, psymval, addend, address);
2515       break;
2516
2517     case elfcpp::R_SPARC_HI22:
2518       Reloc::hi22(view, object, psymval, addend);
2519       break;
2520
2521     case elfcpp::R_SPARC_22:
2522       Reloc::rela32_22(view, object, psymval, addend);
2523       break;
2524
2525     case elfcpp::R_SPARC_13:
2526       Reloc::rela32_13(view, object, psymval, addend);
2527       break;
2528
2529     case elfcpp::R_SPARC_LO10:
2530       Reloc::lo10(view, object, psymval, addend);
2531       break;
2532
2533     case elfcpp::R_SPARC_GOT10:
2534       Reloc::lo10(view, got_offset, addend);
2535       break;
2536
2537     case elfcpp::R_SPARC_GOT13:
2538       Reloc::rela32_13(view, got_offset, addend);
2539       break;
2540
2541     case elfcpp::R_SPARC_GOT22:
2542       Reloc::hi22(view, got_offset, addend);
2543       break;
2544
2545     case elfcpp::R_SPARC_PC10:
2546       Reloc::pc10(view, object, psymval, addend, address);
2547       break;
2548
2549     case elfcpp::R_SPARC_PC22:
2550       Reloc::pc22(view, object, psymval, addend, address);
2551       break;
2552
2553     case elfcpp::R_SPARC_TLS_DTPOFF32:
2554     case elfcpp::R_SPARC_UA32:
2555       Reloc::ua32(view, object, psymval, addend);
2556       break;
2557
2558     case elfcpp::R_SPARC_PLT64:
2559       Relocate_functions<size, big_endian>::rela64(view, object,
2560                                                    psymval, addend);
2561       break;
2562
2563     case elfcpp::R_SPARC_PLT32:
2564       Relocate_functions<size, big_endian>::rela32(view, object,
2565                                                    psymval, addend);
2566       break;
2567
2568     case elfcpp::R_SPARC_HIPLT22:
2569       Reloc::hi22(view, object, psymval, addend);
2570       break;
2571
2572     case elfcpp::R_SPARC_LOPLT10:
2573       Reloc::lo10(view, object, psymval, addend);
2574       break;
2575
2576     case elfcpp::R_SPARC_PCPLT32:
2577       Reloc::disp32(view, object, psymval, addend, address);
2578       break;
2579
2580     case elfcpp::R_SPARC_PCPLT22:
2581       Reloc::pcplt22(view, object, psymval, addend, address);
2582       break;
2583
2584     case elfcpp::R_SPARC_PCPLT10:
2585       Reloc::lo10(view, object, psymval, addend, address);
2586       break;
2587
2588     case elfcpp::R_SPARC_64:
2589       if (!parameters->options().output_is_position_independent())
2590               Relocate_functions<size, big_endian>::rela64(view, object,
2591                                                            psymval, addend);
2592       break;
2593
2594     case elfcpp::R_SPARC_OLO10:
2595       {
2596         unsigned int addend2 = rela.get_r_info() & 0xffffffff;
2597         addend2 = ((addend2 >> 8) ^ 0x800000) - 0x800000;
2598         Reloc::olo10(view, object, psymval, addend, addend2);
2599       }
2600       break;
2601
2602     case elfcpp::R_SPARC_HH22:
2603       Reloc::hh22(view, object, psymval, addend);
2604       break;
2605
2606     case elfcpp::R_SPARC_PC_HH22:
2607       Reloc::pc_hh22(view, object, psymval, addend, address);
2608       break;
2609
2610     case elfcpp::R_SPARC_HM10:
2611       Reloc::hm10(view, object, psymval, addend);
2612       break;
2613
2614     case elfcpp::R_SPARC_PC_HM10:
2615       Reloc::pc_hm10(view, object, psymval, addend, address);
2616       break;
2617
2618     case elfcpp::R_SPARC_LM22:
2619       Reloc::hi22(view, object, psymval, addend);
2620       break;
2621
2622     case elfcpp::R_SPARC_PC_LM22:
2623       Reloc::pcplt22(view, object, psymval, addend, address);
2624       break;
2625
2626     case elfcpp::R_SPARC_11:
2627       Reloc::rela32_11(view, object, psymval, addend);
2628       break;
2629
2630     case elfcpp::R_SPARC_10:
2631       Reloc::rela32_10(view, object, psymval, addend);
2632       break;
2633
2634     case elfcpp::R_SPARC_7:
2635       Reloc::rela32_7(view, object, psymval, addend);
2636       break;
2637
2638     case elfcpp::R_SPARC_6:
2639       Reloc::rela32_6(view, object, psymval, addend);
2640       break;
2641
2642     case elfcpp::R_SPARC_5:
2643       Reloc::rela32_5(view, object, psymval, addend);
2644       break;
2645
2646     case elfcpp::R_SPARC_HIX22:
2647       Reloc::hix22(view, object, psymval, addend);
2648       break;
2649
2650     case elfcpp::R_SPARC_LOX10:
2651       Reloc::lox10(view, object, psymval, addend);
2652       break;
2653
2654     case elfcpp::R_SPARC_H44:
2655       Reloc::h44(view, object, psymval, addend);
2656       break;
2657
2658     case elfcpp::R_SPARC_M44:
2659       Reloc::m44(view, object, psymval, addend);
2660       break;
2661
2662     case elfcpp::R_SPARC_L44:
2663       Reloc::l44(view, object, psymval, addend);
2664       break;
2665
2666     case elfcpp::R_SPARC_TLS_DTPOFF64:
2667     case elfcpp::R_SPARC_UA64:
2668       Reloc::ua64(view, object, psymval, addend);
2669       break;
2670
2671     case elfcpp::R_SPARC_UA16:
2672       Reloc::ua16(view, object, psymval, addend);
2673       break;
2674
2675     case elfcpp::R_SPARC_TLS_GD_HI22:
2676     case elfcpp::R_SPARC_TLS_GD_LO10:
2677     case elfcpp::R_SPARC_TLS_GD_ADD:
2678     case elfcpp::R_SPARC_TLS_GD_CALL:
2679     case elfcpp::R_SPARC_TLS_LDM_HI22:
2680     case elfcpp::R_SPARC_TLS_LDM_LO10:
2681     case elfcpp::R_SPARC_TLS_LDM_ADD:
2682     case elfcpp::R_SPARC_TLS_LDM_CALL:
2683     case elfcpp::R_SPARC_TLS_LDO_HIX22:
2684     case elfcpp::R_SPARC_TLS_LDO_LOX10:
2685     case elfcpp::R_SPARC_TLS_LDO_ADD:
2686     case elfcpp::R_SPARC_TLS_IE_HI22:
2687     case elfcpp::R_SPARC_TLS_IE_LO10:
2688     case elfcpp::R_SPARC_TLS_IE_LD:
2689     case elfcpp::R_SPARC_TLS_IE_LDX:
2690     case elfcpp::R_SPARC_TLS_IE_ADD:
2691     case elfcpp::R_SPARC_TLS_LE_HIX22:
2692     case elfcpp::R_SPARC_TLS_LE_LOX10:
2693       this->relocate_tls(relinfo, target, relnum, rela,
2694                          r_type, gsym, psymval, view,
2695                          address, view_size);
2696       break;
2697
2698     case elfcpp::R_SPARC_COPY:
2699     case elfcpp::R_SPARC_GLOB_DAT:
2700     case elfcpp::R_SPARC_JMP_SLOT:
2701     case elfcpp::R_SPARC_RELATIVE:
2702       // These are outstanding tls relocs, which are unexpected when
2703       // linking.
2704     case elfcpp::R_SPARC_TLS_DTPMOD64:
2705     case elfcpp::R_SPARC_TLS_DTPMOD32:
2706     case elfcpp::R_SPARC_TLS_TPOFF64:
2707     case elfcpp::R_SPARC_TLS_TPOFF32:
2708       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2709                              _("unexpected reloc %u in object file"),
2710                              r_type);
2711       break;
2712
2713     default:
2714       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2715                              _("unsupported reloc %u"),
2716                              r_type);
2717       break;
2718     }
2719
2720   return true;
2721 }
2722
2723 // Perform a TLS relocation.
2724
2725 template<int size, bool big_endian>
2726 inline void
2727 Target_sparc<size, big_endian>::Relocate::relocate_tls(
2728                         const Relocate_info<size, big_endian>* relinfo,
2729                         Target_sparc<size, big_endian>* target,
2730                         size_t relnum,
2731                         const elfcpp::Rela<size, big_endian>& rela,
2732                         unsigned int r_type,
2733                         const Sized_symbol<size>* gsym,
2734                         const Symbol_value<size>* psymval,
2735                         unsigned char* view,
2736                         typename elfcpp::Elf_types<size>::Elf_Addr address,
2737                         section_size_type)
2738 {
2739   Output_segment* tls_segment = relinfo->layout->tls_segment();
2740   typedef Sparc_relocate_functions<size, big_endian> Reloc;
2741   const Sized_relobj<size, big_endian>* object = relinfo->object;
2742   typedef typename elfcpp::Swap<32, true>::Valtype Insntype;
2743
2744   const elfcpp::Elf_Xword addend = rela.get_r_addend();
2745   typename elfcpp::Elf_types<size>::Elf_Addr value = psymval->value(object, 0);
2746
2747   const bool is_final =
2748     (gsym == NULL
2749      ? !parameters->options().output_is_position_independent()
2750      : gsym->final_value_is_known());
2751   const tls::Tls_optimization optimized_type
2752       = optimize_tls_reloc(is_final, r_type);
2753
2754   switch (r_type)
2755     {
2756     case elfcpp::R_SPARC_TLS_GD_HI22:
2757     case elfcpp::R_SPARC_TLS_GD_LO10:
2758     case elfcpp::R_SPARC_TLS_GD_ADD:
2759     case elfcpp::R_SPARC_TLS_GD_CALL:
2760       if (optimized_type == tls::TLSOPT_TO_LE)
2761         {
2762           Insntype* wv = reinterpret_cast<Insntype*>(view);
2763           Insntype val;
2764
2765           value -= tls_segment->memsz();
2766
2767           switch (r_type)
2768             {
2769             case elfcpp::R_SPARC_TLS_GD_HI22:
2770               // TLS_GD_HI22 --> TLS_LE_HIX22
2771               Reloc::hix22(view, value, addend);
2772               break;
2773
2774             case elfcpp::R_SPARC_TLS_GD_LO10:
2775               // TLS_GD_LO10 --> TLS_LE_LOX10
2776               Reloc::lox10(view, value, addend);
2777               break;
2778
2779             case elfcpp::R_SPARC_TLS_GD_ADD:
2780               // add %reg1, %reg2, %reg3 --> mov %g7, %reg2, %reg3
2781               val = elfcpp::Swap<32, true>::readval(wv);
2782               val = (val & ~0x7c000) | 0x1c000;
2783               elfcpp::Swap<32, true>::writeval(wv, val);
2784               break;
2785             case elfcpp::R_SPARC_TLS_GD_CALL:
2786               // call __tls_get_addr --> nop
2787               elfcpp::Swap<32, true>::writeval(wv, sparc_nop);
2788               break;
2789             }
2790           break;
2791         }
2792       else
2793         {
2794           unsigned int got_type = (optimized_type == tls::TLSOPT_TO_IE
2795                                    ? GOT_TYPE_TLS_OFFSET
2796                                    : GOT_TYPE_TLS_PAIR);
2797           if (gsym != NULL)
2798             {
2799               gold_assert(gsym->has_got_offset(got_type));
2800               value = gsym->got_offset(got_type);
2801             }
2802           else
2803             {
2804               unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
2805               gold_assert(object->local_has_got_offset(r_sym, got_type));
2806               value = object->local_got_offset(r_sym, got_type);
2807             }
2808           if (optimized_type == tls::TLSOPT_TO_IE)
2809             {
2810               Insntype* wv = reinterpret_cast<Insntype*>(view);
2811               Insntype val;
2812
2813               switch (r_type)
2814                 {
2815                 case elfcpp::R_SPARC_TLS_GD_HI22:
2816                   // TLS_GD_HI22 --> TLS_IE_HI22
2817                   Reloc::hi22(view, value, addend);
2818                   break;
2819
2820                 case elfcpp::R_SPARC_TLS_GD_LO10:
2821                   // TLS_GD_LO10 --> TLS_IE_LO10
2822                   Reloc::lo10(view, value, addend);
2823                   break;
2824
2825                 case elfcpp::R_SPARC_TLS_GD_ADD:
2826                   // add %reg1, %reg2, %reg3 --> ld [%reg1 + %reg2], %reg3
2827                   val = elfcpp::Swap<32, true>::readval(wv);
2828
2829                   if (size == 64)
2830                     val |= 0xc0580000;
2831                   else
2832                     val |= 0xc0000000;
2833
2834                   elfcpp::Swap<32, true>::writeval(wv, val);
2835                   break;
2836
2837                 case elfcpp::R_SPARC_TLS_GD_CALL:
2838                   // The compiler can put the TLS_GD_ADD instruction
2839                   // into the delay slot of the call.  If so, we need
2840                   // to transpose the two instructions so that the
2841                   // the new sequence works properly.
2842                   //
2843                   // The test we use is if the instruction in the
2844                   // delay slot is an add with destination register
2845                   // equal to %o0
2846                   val = elfcpp::Swap<32, true>::readval(wv + 1);
2847                   if ((val & 0x81f80000) == 0x80000000
2848                       && ((val >> 25) & 0x1f) == 0x8)
2849                     {
2850                       if (size == 64)
2851                         val |= 0xc0580000;
2852                       else
2853                         val |= 0xc0000000;
2854
2855                       elfcpp::Swap<32, true>::writeval(wv, val);
2856
2857                       wv += 1;
2858                       this->ignore_gd_add_ = true;
2859                     }
2860
2861                   // call __tls_get_addr --> add %g7, %o0, %o0
2862                   elfcpp::Swap<32, true>::writeval(wv, 0x9001c008);
2863                   break;
2864                 }
2865               break;
2866             }
2867           else if (optimized_type == tls::TLSOPT_NONE)
2868             {
2869               switch (r_type)
2870                 {
2871                 case elfcpp::R_SPARC_TLS_GD_HI22:
2872                   Reloc::hi22(view, value, addend);
2873                   break;
2874                 case elfcpp::R_SPARC_TLS_GD_LO10:
2875                   Reloc::lo10(view, value, addend);
2876                   break;
2877                 case elfcpp::R_SPARC_TLS_GD_ADD:
2878                   break;
2879                 case elfcpp::R_SPARC_TLS_GD_CALL:
2880                   {
2881                     Symbol_value<size> symval;
2882                     elfcpp::Elf_Xword value;
2883                     Symbol* tsym;
2884
2885                     tsym = target->tls_get_addr_sym_;
2886                     gold_assert(tsym);
2887                     value = (target->plt_section()->address() +
2888                              tsym->plt_offset());
2889                     symval.set_output_value(value);
2890                     Reloc::wdisp30(view, object, &symval, addend, address);
2891                   }
2892                   break;
2893                 }
2894               break;
2895             }
2896         }
2897       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2898                              _("unsupported reloc %u"),
2899                              r_type);
2900       break;
2901
2902     case elfcpp::R_SPARC_TLS_LDM_HI22:
2903     case elfcpp::R_SPARC_TLS_LDM_LO10:
2904     case elfcpp::R_SPARC_TLS_LDM_ADD:
2905     case elfcpp::R_SPARC_TLS_LDM_CALL:
2906       if (optimized_type == tls::TLSOPT_TO_LE)
2907         {
2908           Insntype* wv = reinterpret_cast<Insntype*>(view);
2909
2910           switch (r_type)
2911             {
2912             case elfcpp::R_SPARC_TLS_LDM_HI22:
2913             case elfcpp::R_SPARC_TLS_LDM_LO10:
2914             case elfcpp::R_SPARC_TLS_LDM_ADD:
2915               elfcpp::Swap<32, true>::writeval(wv, sparc_nop);
2916               break;
2917
2918             case elfcpp::R_SPARC_TLS_LDM_CALL:
2919               elfcpp::Swap<32, true>::writeval(wv, sparc_mov_g0_o0);
2920               break;
2921             }
2922           break;
2923         }
2924       else if (optimized_type == tls::TLSOPT_NONE)
2925         {
2926           // Relocate the field with the offset of the GOT entry for
2927           // the module index.
2928           unsigned int got_offset;
2929
2930           got_offset = target->got_mod_index_entry(NULL, NULL, NULL);
2931           switch (r_type)
2932             {
2933             case elfcpp::R_SPARC_TLS_LDM_HI22:
2934               Reloc::hi22(view, got_offset, addend);
2935               break;
2936             case elfcpp::R_SPARC_TLS_LDM_LO10:
2937               Reloc::lo10(view, got_offset, addend);
2938               break;
2939             case elfcpp::R_SPARC_TLS_LDM_ADD:
2940               break;
2941             case elfcpp::R_SPARC_TLS_LDM_CALL:
2942               {
2943                 Symbol_value<size> symval;
2944                 elfcpp::Elf_Xword value;
2945                 Symbol* tsym;
2946
2947                 tsym = target->tls_get_addr_sym_;
2948                 gold_assert(tsym);
2949                 value = (target->plt_section()->address() +
2950                          tsym->plt_offset());
2951                 symval.set_output_value(value);
2952                 Reloc::wdisp30(view, object, &symval, addend, address);
2953               }
2954               break;
2955             }
2956           break;
2957         }
2958       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2959                              _("unsupported reloc %u"),
2960                              r_type);
2961       break;
2962
2963       // These relocs can appear in debugging sections, in which case
2964       // we won't see the TLS_LDM relocs.  The local_dynamic_type
2965       // field tells us this.
2966     case elfcpp::R_SPARC_TLS_LDO_HIX22:
2967       if (optimized_type == tls::TLSOPT_TO_LE)
2968         {
2969           value -= tls_segment->memsz();
2970           Reloc::hix22(view, value, addend);
2971         }
2972       else
2973         Reloc::ldo_hix22(view, value, addend);
2974       break;
2975     case elfcpp::R_SPARC_TLS_LDO_LOX10:
2976       if (optimized_type == tls::TLSOPT_TO_LE)
2977         {
2978           value -= tls_segment->memsz();
2979           Reloc::lox10(view, value, addend);
2980         }
2981       else
2982         Reloc::ldo_lox10(view, value, addend);
2983       break;
2984     case elfcpp::R_SPARC_TLS_LDO_ADD:
2985       if (optimized_type == tls::TLSOPT_TO_LE)
2986         {
2987           Insntype* wv = reinterpret_cast<Insntype*>(view);
2988           Insntype val;
2989
2990           // add %reg1, %reg2, %reg3 --> add %g7, %reg2, %reg3
2991           val = elfcpp::Swap<32, true>::readval(wv);
2992           val = (val & ~0x7c000) | 0x1c000;
2993           elfcpp::Swap<32, true>::writeval(wv, val);
2994         }
2995       break;
2996
2997       // When optimizing IE --> LE, the only relocation that is handled
2998       // differently is R_SPARC_TLS_IE_LD, it is rewritten from
2999       // 'ld{,x} [rs1 + rs2], rd' into 'mov rs2, rd' or simply a NOP is
3000       // rs2 and rd are the same.
3001     case elfcpp::R_SPARC_TLS_IE_LD:
3002     case elfcpp::R_SPARC_TLS_IE_LDX:
3003       if (optimized_type == tls::TLSOPT_TO_LE)
3004         {
3005           Insntype* wv = reinterpret_cast<Insntype*>(view);
3006           Insntype val = elfcpp::Swap<32, true>::readval(wv);
3007           Insntype rs2 = val & 0x1f;
3008           Insntype rd = (val >> 25) & 0x1f;
3009
3010           if (rs2 == rd)
3011             val = sparc_nop;
3012           else
3013             val = sparc_mov | (val & 0x3e00001f);
3014
3015           elfcpp::Swap<32, true>::writeval(wv, val);
3016         }
3017       break;
3018
3019     case elfcpp::R_SPARC_TLS_IE_HI22:
3020     case elfcpp::R_SPARC_TLS_IE_LO10:
3021       if (optimized_type == tls::TLSOPT_TO_LE)
3022         {
3023           value -= tls_segment->memsz();
3024           switch (r_type)
3025             {
3026             case elfcpp::R_SPARC_TLS_IE_HI22:
3027               // IE_HI22 --> LE_HIX22
3028               Reloc::hix22(view, value, addend);
3029               break;
3030             case elfcpp::R_SPARC_TLS_IE_LO10:
3031               // IE_LO10 --> LE_LOX10
3032               Reloc::lox10(view, value, addend);
3033               break;
3034             }
3035           break;
3036         }
3037       else if (optimized_type == tls::TLSOPT_NONE)
3038         {
3039           // Relocate the field with the offset of the GOT entry for
3040           // the tp-relative offset of the symbol.
3041           if (gsym != NULL)
3042             {
3043               gold_assert(gsym->has_got_offset(GOT_TYPE_TLS_OFFSET));
3044               value = gsym->got_offset(GOT_TYPE_TLS_OFFSET);
3045             }
3046           else
3047             {
3048               unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
3049               gold_assert(object->local_has_got_offset(r_sym,
3050                                                        GOT_TYPE_TLS_OFFSET));
3051               value = object->local_got_offset(r_sym,
3052                                                GOT_TYPE_TLS_OFFSET);
3053             }
3054           switch (r_type)
3055             {
3056             case elfcpp::R_SPARC_TLS_IE_HI22:
3057               Reloc::hi22(view, value, addend);
3058               break;
3059             case elfcpp::R_SPARC_TLS_IE_LO10:
3060               Reloc::lo10(view, value, addend);
3061               break;
3062             }
3063           break;
3064         }
3065       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
3066                              _("unsupported reloc %u"),
3067                              r_type);
3068       break;
3069
3070     case elfcpp::R_SPARC_TLS_IE_ADD:
3071       // This seems to be mainly so that we can find the addition
3072       // instruction if there is one.  There doesn't seem to be any
3073       // actual relocation to apply.
3074       break;
3075
3076     case elfcpp::R_SPARC_TLS_LE_HIX22:
3077       // If we're creating a shared library, a dynamic relocation will
3078       // have been created for this location, so do not apply it now.
3079       if (!parameters->options().shared())
3080         {
3081           value -= tls_segment->memsz();
3082           Reloc::hix22(view, value, addend);
3083         }
3084       break;
3085
3086     case elfcpp::R_SPARC_TLS_LE_LOX10:
3087       // If we're creating a shared library, a dynamic relocation will
3088       // have been created for this location, so do not apply it now.
3089       if (!parameters->options().shared())
3090         {
3091           value -= tls_segment->memsz();
3092           Reloc::lox10(view, value, addend);
3093         }
3094       break;
3095     }
3096 }
3097
3098 // Relocate section data.
3099
3100 template<int size, bool big_endian>
3101 void
3102 Target_sparc<size, big_endian>::relocate_section(
3103                         const Relocate_info<size, big_endian>* relinfo,
3104                         unsigned int sh_type,
3105                         const unsigned char* prelocs,
3106                         size_t reloc_count,
3107                         Output_section* output_section,
3108                         bool needs_special_offset_handling,
3109                         unsigned char* view,
3110                         typename elfcpp::Elf_types<size>::Elf_Addr address,
3111                         section_size_type view_size,
3112                         const Reloc_symbol_changes* reloc_symbol_changes)
3113 {
3114   typedef Target_sparc<size, big_endian> Sparc;
3115   typedef typename Target_sparc<size, big_endian>::Relocate Sparc_relocate;
3116
3117   gold_assert(sh_type == elfcpp::SHT_RELA);
3118
3119   gold::relocate_section<size, big_endian, Sparc, elfcpp::SHT_RELA,
3120     Sparc_relocate>(
3121     relinfo,
3122     this,
3123     prelocs,
3124     reloc_count,
3125     output_section,
3126     needs_special_offset_handling,
3127     view,
3128     address,
3129     view_size,
3130     reloc_symbol_changes);
3131 }
3132
3133 // Return the size of a relocation while scanning during a relocatable
3134 // link.
3135
3136 template<int size, bool big_endian>
3137 unsigned int
3138 Target_sparc<size, big_endian>::Relocatable_size_for_reloc::get_size_for_reloc(
3139     unsigned int,
3140     Relobj*)
3141 {
3142   // We are always SHT_RELA, so we should never get here.
3143   gold_unreachable();
3144   return 0;
3145 }
3146
3147 // Scan the relocs during a relocatable link.
3148
3149 template<int size, bool big_endian>
3150 void
3151 Target_sparc<size, big_endian>::scan_relocatable_relocs(
3152                         Symbol_table* symtab,
3153                         Layout* layout,
3154                         Sized_relobj<size, big_endian>* object,
3155                         unsigned int data_shndx,
3156                         unsigned int sh_type,
3157                         const unsigned char* prelocs,
3158                         size_t reloc_count,
3159                         Output_section* output_section,
3160                         bool needs_special_offset_handling,
3161                         size_t local_symbol_count,
3162                         const unsigned char* plocal_symbols,
3163                         Relocatable_relocs* rr)
3164 {
3165   gold_assert(sh_type == elfcpp::SHT_RELA);
3166
3167   typedef gold::Default_scan_relocatable_relocs<elfcpp::SHT_RELA,
3168     Relocatable_size_for_reloc> Scan_relocatable_relocs;
3169
3170   gold::scan_relocatable_relocs<size, big_endian, elfcpp::SHT_RELA,
3171       Scan_relocatable_relocs>(
3172     symtab,
3173     layout,
3174     object,
3175     data_shndx,
3176     prelocs,
3177     reloc_count,
3178     output_section,
3179     needs_special_offset_handling,
3180     local_symbol_count,
3181     plocal_symbols,
3182     rr);
3183 }
3184
3185 // Relocate a section during a relocatable link.
3186
3187 template<int size, bool big_endian>
3188 void
3189 Target_sparc<size, big_endian>::relocate_for_relocatable(
3190     const Relocate_info<size, big_endian>* relinfo,
3191     unsigned int sh_type,
3192     const unsigned char* prelocs,
3193     size_t reloc_count,
3194     Output_section* output_section,
3195     off_t offset_in_output_section,
3196     const Relocatable_relocs* rr,
3197     unsigned char* view,
3198     typename elfcpp::Elf_types<size>::Elf_Addr view_address,
3199     section_size_type view_size,
3200     unsigned char* reloc_view,
3201     section_size_type reloc_view_size)
3202 {
3203   gold_assert(sh_type == elfcpp::SHT_RELA);
3204
3205   gold::relocate_for_relocatable<size, big_endian, elfcpp::SHT_RELA>(
3206     relinfo,
3207     prelocs,
3208     reloc_count,
3209     output_section,
3210     offset_in_output_section,
3211     rr,
3212     view,
3213     view_address,
3214     view_size,
3215     reloc_view,
3216     reloc_view_size);
3217 }
3218
3219 // Return the value to use for a dynamic which requires special
3220 // treatment.  This is how we support equality comparisons of function
3221 // pointers across shared library boundaries, as described in the
3222 // processor specific ABI supplement.
3223
3224 template<int size, bool big_endian>
3225 uint64_t
3226 Target_sparc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const
3227 {
3228   gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset());
3229   return this->plt_section()->address() + gsym->plt_offset();
3230 }
3231
3232 // The selector for sparc object files.
3233
3234 template<int size, bool big_endian>
3235 class Target_selector_sparc : public Target_selector
3236 {
3237 public:
3238   Target_selector_sparc()
3239     : Target_selector(elfcpp::EM_NONE, size, big_endian,
3240                       (size == 64 ? "elf64-sparc" : "elf32-sparc"))
3241   { }
3242
3243   Target* do_recognize(int machine, int, int)
3244   {
3245     switch (size)
3246       {
3247       case 64:
3248         if (machine != elfcpp::EM_SPARCV9)
3249           return NULL;
3250         break;
3251
3252       case 32:
3253         if (machine != elfcpp::EM_SPARC
3254             && machine != elfcpp::EM_SPARC32PLUS)
3255           return NULL;
3256         break;
3257
3258       default:
3259         return NULL;
3260       }
3261
3262     return this->instantiate_target();
3263   }
3264
3265   Target* do_instantiate_target()
3266   { return new Target_sparc<size, big_endian>(); }
3267 };
3268
3269 Target_selector_sparc<32, true> target_selector_sparc32;
3270 Target_selector_sparc<64, true> target_selector_sparc64;
3271
3272 } // End anonymous namespace.