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, true, false,
1030                                            false);
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                                       false, false, false);
1058     }
1059   return this->rela_dyn_;
1060 }
1061
1062 // A class to handle the PLT data.
1063
1064 template<int size, bool big_endian>
1065 class Output_data_plt_sparc : public Output_section_data
1066 {
1067  public:
1068   typedef Output_data_reloc<elfcpp::SHT_RELA, true,
1069                             size, big_endian> Reloc_section;
1070
1071   Output_data_plt_sparc(Layout*);
1072
1073   // Add an entry to the PLT.
1074   void add_entry(Symbol* gsym);
1075
1076   // Return the .rela.plt section data.
1077   const Reloc_section* rel_plt() const
1078   {
1079     return this->rel_;
1080   }
1081
1082  protected:
1083   void do_adjust_output_section(Output_section* os);
1084
1085   // Write to a map file.
1086   void
1087   do_print_to_mapfile(Mapfile* mapfile) const
1088   { mapfile->print_output_data(this, _("** PLT")); }
1089
1090  private:
1091   // The size of an entry in the PLT.
1092   static const int base_plt_entry_size = (size == 32 ? 12 : 32);
1093
1094   static const unsigned int plt_entries_per_block = 160;
1095   static const unsigned int plt_insn_chunk_size = 24;
1096   static const unsigned int plt_pointer_chunk_size = 8;
1097   static const unsigned int plt_block_size =
1098     (plt_entries_per_block
1099      * (plt_insn_chunk_size + plt_pointer_chunk_size));
1100
1101   // Set the final size.
1102   void
1103   set_final_data_size()
1104   {
1105     unsigned int full_count = this->count_ + 4;
1106     unsigned int extra = (size == 32 ? 4 : 0);
1107
1108     if (size == 32 || full_count < 32768)
1109       this->set_data_size((full_count * base_plt_entry_size) + extra);
1110     else
1111       {
1112         unsigned int ext_cnt = full_count - 32768;
1113
1114         this->set_data_size((32768 * base_plt_entry_size)
1115                             + (ext_cnt
1116                                * (plt_insn_chunk_size
1117                                   + plt_pointer_chunk_size)));
1118       }
1119   }
1120
1121   // Write out the PLT data.
1122   void
1123   do_write(Output_file*);
1124
1125   // The reloc section.
1126   Reloc_section* rel_;
1127   // The number of PLT entries.
1128   unsigned int count_;
1129 };
1130
1131 // Define the constants as required by C++ standard.
1132
1133 template<int size, bool big_endian>
1134 const int Output_data_plt_sparc<size, big_endian>::base_plt_entry_size;
1135
1136 template<int size, bool big_endian>
1137 const unsigned int
1138 Output_data_plt_sparc<size, big_endian>::plt_entries_per_block;
1139
1140 template<int size, bool big_endian>
1141 const unsigned int Output_data_plt_sparc<size, big_endian>::plt_insn_chunk_size;
1142
1143 template<int size, bool big_endian>
1144 const unsigned int
1145 Output_data_plt_sparc<size, big_endian>::plt_pointer_chunk_size;
1146
1147 template<int size, bool big_endian>
1148 const unsigned int Output_data_plt_sparc<size, big_endian>::plt_block_size;
1149
1150 // Create the PLT section.  The ordinary .got section is an argument,
1151 // since we need to refer to the start.
1152
1153 template<int size, bool big_endian>
1154 Output_data_plt_sparc<size, big_endian>::Output_data_plt_sparc(Layout* layout)
1155   : Output_section_data(size == 32 ? 4 : 8), count_(0)
1156 {
1157   this->rel_ = new Reloc_section(false);
1158   layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA,
1159                                   elfcpp::SHF_ALLOC, this->rel_, true,
1160                                   false, false, false);
1161 }
1162
1163 template<int size, bool big_endian>
1164 void
1165 Output_data_plt_sparc<size, big_endian>::do_adjust_output_section(Output_section* os)
1166 {
1167   os->set_entsize(0);
1168 }
1169
1170 // Add an entry to the PLT.
1171
1172 template<int size, bool big_endian>
1173 void
1174 Output_data_plt_sparc<size, big_endian>::add_entry(Symbol* gsym)
1175 {
1176   gold_assert(!gsym->has_plt_offset());
1177
1178   unsigned int index = this->count_ + 4;
1179   section_offset_type plt_offset;
1180
1181   if (size == 32 || index < 32768)
1182     plt_offset = index * base_plt_entry_size;
1183   else
1184     {
1185         unsigned int ext_index = index - 32768;
1186
1187         plt_offset = (32768 * base_plt_entry_size)
1188           + ((ext_index / plt_entries_per_block)
1189              * plt_block_size)
1190           + ((ext_index % plt_entries_per_block)
1191              * plt_insn_chunk_size);
1192     }
1193
1194   gsym->set_plt_offset(plt_offset);
1195
1196   ++this->count_;
1197
1198   // Every PLT entry needs a reloc.
1199   gsym->set_needs_dynsym_entry();
1200   this->rel_->add_global(gsym, elfcpp::R_SPARC_JMP_SLOT, this,
1201                          plt_offset, 0);
1202
1203   // Note that we don't need to save the symbol.  The contents of the
1204   // PLT are independent of which symbols are used.  The symbols only
1205   // appear in the relocations.
1206 }
1207
1208 static const unsigned int sparc_nop = 0x01000000;
1209 static const unsigned int sparc_sethi_g1 = 0x03000000;
1210 static const unsigned int sparc_branch_always = 0x30800000;
1211 static const unsigned int sparc_branch_always_pt = 0x30680000;
1212 static const unsigned int sparc_mov = 0x80100000;
1213 static const unsigned int sparc_mov_g0_o0 = 0x90100000;
1214 static const unsigned int sparc_mov_o7_g5 = 0x8a10000f;
1215 static const unsigned int sparc_call_plus_8 = 0x40000002;
1216 static const unsigned int sparc_ldx_o7_imm_g1 = 0xc25be000;
1217 static const unsigned int sparc_jmpl_o7_g1_g1 = 0x83c3c001;
1218 static const unsigned int sparc_mov_g5_o7 = 0x9e100005;
1219
1220 // Write out the PLT.
1221
1222 template<int size, bool big_endian>
1223 void
1224 Output_data_plt_sparc<size, big_endian>::do_write(Output_file* of)
1225 {
1226   const off_t offset = this->offset();
1227   const section_size_type oview_size =
1228     convert_to_section_size_type(this->data_size());
1229   unsigned char* const oview = of->get_output_view(offset, oview_size);
1230   unsigned char* pov = oview;
1231
1232   memset(pov, 0, base_plt_entry_size * 4);
1233   pov += base_plt_entry_size * 4;
1234
1235   unsigned int plt_offset = base_plt_entry_size * 4;
1236   const unsigned int count = this->count_;
1237
1238   if (size == 64)
1239     {
1240       unsigned int limit;
1241
1242       limit = (count > 32768 ? 32768 : count);
1243
1244       for (unsigned int i = 0; i < limit; ++i)
1245         {
1246           elfcpp::Swap<32, true>::writeval(pov + 0x00,
1247                                            sparc_sethi_g1 + plt_offset);
1248           elfcpp::Swap<32, true>::writeval(pov + 0x04,
1249                                            sparc_branch_always_pt +
1250                                            (((base_plt_entry_size -
1251                                               (plt_offset + 4)) >> 2) &
1252                                             0x7ffff));
1253           elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop);
1254           elfcpp::Swap<32, true>::writeval(pov + 0x0c, sparc_nop);
1255           elfcpp::Swap<32, true>::writeval(pov + 0x10, sparc_nop);
1256           elfcpp::Swap<32, true>::writeval(pov + 0x14, sparc_nop);
1257           elfcpp::Swap<32, true>::writeval(pov + 0x18, sparc_nop);
1258           elfcpp::Swap<32, true>::writeval(pov + 0x1c, sparc_nop);
1259
1260           pov += base_plt_entry_size;
1261           plt_offset += base_plt_entry_size;
1262         }
1263
1264       if (count > 32768)
1265         {
1266           unsigned int ext_cnt = count - 32768;
1267           unsigned int blks = ext_cnt / plt_entries_per_block;
1268
1269           for (unsigned int i = 0; i < blks; ++i)
1270             {
1271               unsigned int data_off = (plt_entries_per_block
1272                                        * plt_insn_chunk_size) - 4;
1273
1274               for (unsigned int j = 0; j < plt_entries_per_block; ++j)
1275                 {
1276                   elfcpp::Swap<32, true>::writeval(pov + 0x00,
1277                                                    sparc_mov_o7_g5);
1278                   elfcpp::Swap<32, true>::writeval(pov + 0x04,
1279                                                    sparc_call_plus_8);
1280                   elfcpp::Swap<32, true>::writeval(pov + 0x08,
1281                                                    sparc_nop);
1282                   elfcpp::Swap<32, true>::writeval(pov + 0x0c,
1283                                                    sparc_ldx_o7_imm_g1 +
1284                                                    (data_off & 0x1fff));
1285                   elfcpp::Swap<32, true>::writeval(pov + 0x10,
1286                                                    sparc_jmpl_o7_g1_g1);
1287                   elfcpp::Swap<32, true>::writeval(pov + 0x14,
1288                                                    sparc_mov_g5_o7);
1289
1290                   elfcpp::Swap<64, big_endian>::writeval(
1291                                 pov + 0x4 + data_off,
1292                                 (elfcpp::Elf_Xword) (oview - (pov + 0x04)));
1293
1294                   pov += plt_insn_chunk_size;
1295                   data_off -= 16;
1296                 }
1297             }
1298
1299           unsigned int sub_blk_cnt = ext_cnt % plt_entries_per_block;
1300           for (unsigned int i = 0; i < sub_blk_cnt; ++i)
1301             {
1302               unsigned int data_off = (sub_blk_cnt
1303                                        * plt_insn_chunk_size) - 4;
1304
1305               for (unsigned int j = 0; j < plt_entries_per_block; ++j)
1306                 {
1307                   elfcpp::Swap<32, true>::writeval(pov + 0x00,
1308                                                    sparc_mov_o7_g5);
1309                   elfcpp::Swap<32, true>::writeval(pov + 0x04,
1310                                                    sparc_call_plus_8);
1311                   elfcpp::Swap<32, true>::writeval(pov + 0x08,
1312                                                    sparc_nop);
1313                   elfcpp::Swap<32, true>::writeval(pov + 0x0c,
1314                                                    sparc_ldx_o7_imm_g1 +
1315                                                    (data_off & 0x1fff));
1316                   elfcpp::Swap<32, true>::writeval(pov + 0x10,
1317                                                    sparc_jmpl_o7_g1_g1);
1318                   elfcpp::Swap<32, true>::writeval(pov + 0x14,
1319                                                    sparc_mov_g5_o7);
1320
1321                   elfcpp::Swap<64, big_endian>::writeval(
1322                                 pov + 0x4 + data_off,
1323                                 (elfcpp::Elf_Xword) (oview - (pov + 0x04)));
1324
1325                   pov += plt_insn_chunk_size;
1326                   data_off -= 16;
1327                 }
1328             }
1329         }
1330     }
1331   else
1332     {
1333       for (unsigned int i = 0; i < count; ++i)
1334         {
1335           elfcpp::Swap<32, true>::writeval(pov + 0x00,
1336                                            sparc_sethi_g1 + plt_offset);
1337           elfcpp::Swap<32, true>::writeval(pov + 0x04,
1338                                            sparc_branch_always +
1339                                            (((- (plt_offset + 4)) >> 2) &
1340                                             0x003fffff));
1341           elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop);
1342
1343           pov += base_plt_entry_size;
1344           plt_offset += base_plt_entry_size;
1345         }
1346
1347       elfcpp::Swap<32, true>::writeval(pov, sparc_nop);
1348       pov += 4;
1349     }
1350
1351   gold_assert(static_cast<section_size_type>(pov - oview) == oview_size);
1352
1353   of->write_output_view(offset, oview_size, oview);
1354 }
1355
1356 // Create a PLT entry for a global symbol.
1357
1358 template<int size, bool big_endian>
1359 void
1360 Target_sparc<size, big_endian>::make_plt_entry(Symbol_table* symtab,
1361                                                Layout* layout,
1362                                                Symbol* gsym)
1363 {
1364   if (gsym->has_plt_offset())
1365     return;
1366
1367   if (this->plt_ == NULL)
1368     {
1369       // Create the GOT sections first.
1370       this->got_section(symtab, layout);
1371
1372       this->plt_ = new Output_data_plt_sparc<size, big_endian>(layout);
1373       layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS,
1374                                       (elfcpp::SHF_ALLOC
1375                                        | elfcpp::SHF_EXECINSTR
1376                                        | elfcpp::SHF_WRITE),
1377                                       this->plt_, false, false, false, false);
1378
1379       // Define _PROCEDURE_LINKAGE_TABLE_ at the start of the .plt section.
1380       symtab->define_in_output_data("_PROCEDURE_LINKAGE_TABLE_", NULL,
1381                                     Symbol_table::PREDEFINED,
1382                                     this->plt_,
1383                                     0, 0, elfcpp::STT_OBJECT,
1384                                     elfcpp::STB_LOCAL,
1385                                     elfcpp::STV_HIDDEN, 0,
1386                                     false, false);
1387     }
1388
1389   this->plt_->add_entry(gsym);
1390 }
1391
1392 // Create a GOT entry for the TLS module index.
1393
1394 template<int size, bool big_endian>
1395 unsigned int
1396 Target_sparc<size, big_endian>::got_mod_index_entry(Symbol_table* symtab,
1397                                                     Layout* layout,
1398                                                     Sized_relobj<size, big_endian>* object)
1399 {
1400   if (this->got_mod_index_offset_ == -1U)
1401     {
1402       gold_assert(symtab != NULL && layout != NULL && object != NULL);
1403       Reloc_section* rela_dyn = this->rela_dyn_section(layout);
1404       Output_data_got<size, big_endian>* got;
1405       unsigned int got_offset;
1406
1407       got = this->got_section(symtab, layout);
1408       got_offset = got->add_constant(0);
1409       rela_dyn->add_local(object, 0,
1410                           (size == 64 ?
1411                            elfcpp::R_SPARC_TLS_DTPMOD64 :
1412                            elfcpp::R_SPARC_TLS_DTPMOD32), got,
1413                           got_offset, 0);
1414       got->add_constant(0);
1415       this->got_mod_index_offset_ = got_offset;
1416     }
1417   return this->got_mod_index_offset_;
1418 }
1419
1420 // Optimize the TLS relocation type based on what we know about the
1421 // symbol.  IS_FINAL is true if the final address of this symbol is
1422 // known at link time.
1423
1424 static tls::Tls_optimization
1425 optimize_tls_reloc(bool is_final, int r_type)
1426 {
1427   // If we are generating a shared library, then we can't do anything
1428   // in the linker.
1429   if (parameters->options().shared())
1430     return tls::TLSOPT_NONE;
1431
1432   switch (r_type)
1433     {
1434     case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1435     case elfcpp::R_SPARC_TLS_GD_LO10:
1436     case elfcpp::R_SPARC_TLS_GD_ADD:
1437     case elfcpp::R_SPARC_TLS_GD_CALL:
1438       // These are General-Dynamic which permits fully general TLS
1439       // access.  Since we know that we are generating an executable,
1440       // we can convert this to Initial-Exec.  If we also know that
1441       // this is a local symbol, we can further switch to Local-Exec.
1442       if (is_final)
1443         return tls::TLSOPT_TO_LE;
1444       return tls::TLSOPT_TO_IE;
1445
1446     case elfcpp::R_SPARC_TLS_LDM_HI22:  // Local-dynamic
1447     case elfcpp::R_SPARC_TLS_LDM_LO10:
1448     case elfcpp::R_SPARC_TLS_LDM_ADD:
1449     case elfcpp::R_SPARC_TLS_LDM_CALL:
1450       // This is Local-Dynamic, which refers to a local symbol in the
1451       // dynamic TLS block.  Since we know that we generating an
1452       // executable, we can switch to Local-Exec.
1453       return tls::TLSOPT_TO_LE;
1454
1455     case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
1456     case elfcpp::R_SPARC_TLS_LDO_LOX10:
1457     case elfcpp::R_SPARC_TLS_LDO_ADD:
1458       // Another type of Local-Dynamic relocation.
1459       return tls::TLSOPT_TO_LE;
1460
1461     case elfcpp::R_SPARC_TLS_IE_HI22:   // Initial-exec
1462     case elfcpp::R_SPARC_TLS_IE_LO10:
1463     case elfcpp::R_SPARC_TLS_IE_LD:
1464     case elfcpp::R_SPARC_TLS_IE_LDX:
1465     case elfcpp::R_SPARC_TLS_IE_ADD:
1466       // These are Initial-Exec relocs which get the thread offset
1467       // from the GOT.  If we know that we are linking against the
1468       // local symbol, we can switch to Local-Exec, which links the
1469       // thread offset into the instruction.
1470       if (is_final)
1471         return tls::TLSOPT_TO_LE;
1472       return tls::TLSOPT_NONE;
1473
1474     case elfcpp::R_SPARC_TLS_LE_HIX22:  // Local-exec
1475     case elfcpp::R_SPARC_TLS_LE_LOX10:
1476       // When we already have Local-Exec, there is nothing further we
1477       // can do.
1478       return tls::TLSOPT_NONE;
1479
1480     default:
1481       gold_unreachable();
1482     }
1483 }
1484
1485 // Generate a PLT entry slot for a call to __tls_get_addr
1486 template<int size, bool big_endian>
1487 void
1488 Target_sparc<size, big_endian>::Scan::generate_tls_call(Symbol_table* symtab,
1489                                                         Layout* layout,
1490                                                         Target_sparc<size, big_endian>* target)
1491 {
1492   Symbol* gsym = target->tls_get_addr_sym(symtab);
1493
1494   target->make_plt_entry(symtab, layout, gsym);
1495 }
1496
1497 // Report an unsupported relocation against a local symbol.
1498
1499 template<int size, bool big_endian>
1500 void
1501 Target_sparc<size, big_endian>::Scan::unsupported_reloc_local(
1502                         Sized_relobj<size, big_endian>* object,
1503                         unsigned int r_type)
1504 {
1505   gold_error(_("%s: unsupported reloc %u against local symbol"),
1506              object->name().c_str(), r_type);
1507 }
1508
1509 // We are about to emit a dynamic relocation of type R_TYPE.  If the
1510 // dynamic linker does not support it, issue an error.
1511
1512 template<int size, bool big_endian>
1513 void
1514 Target_sparc<size, big_endian>::Scan::check_non_pic(Relobj* object, unsigned int r_type)
1515 {
1516   gold_assert(r_type != elfcpp::R_SPARC_NONE);
1517
1518   if (size == 64)
1519     {
1520       switch (r_type)
1521         {
1522           // These are the relocation types supported by glibc for sparc 64-bit.
1523         case elfcpp::R_SPARC_RELATIVE:
1524         case elfcpp::R_SPARC_COPY:
1525         case elfcpp::R_SPARC_64:
1526         case elfcpp::R_SPARC_GLOB_DAT:
1527         case elfcpp::R_SPARC_JMP_SLOT:
1528         case elfcpp::R_SPARC_TLS_DTPMOD64:
1529         case elfcpp::R_SPARC_TLS_DTPOFF64:
1530         case elfcpp::R_SPARC_TLS_TPOFF64:
1531         case elfcpp::R_SPARC_TLS_LE_HIX22:
1532         case elfcpp::R_SPARC_TLS_LE_LOX10:
1533         case elfcpp::R_SPARC_8:
1534         case elfcpp::R_SPARC_16:
1535         case elfcpp::R_SPARC_DISP8:
1536         case elfcpp::R_SPARC_DISP16:
1537         case elfcpp::R_SPARC_DISP32:
1538         case elfcpp::R_SPARC_WDISP30:
1539         case elfcpp::R_SPARC_LO10:
1540         case elfcpp::R_SPARC_HI22:
1541         case elfcpp::R_SPARC_OLO10:
1542         case elfcpp::R_SPARC_H44:
1543         case elfcpp::R_SPARC_M44:
1544         case elfcpp::R_SPARC_L44:
1545         case elfcpp::R_SPARC_HH22:
1546         case elfcpp::R_SPARC_HM10:
1547         case elfcpp::R_SPARC_LM22:
1548         case elfcpp::R_SPARC_UA16:
1549         case elfcpp::R_SPARC_UA32:
1550         case elfcpp::R_SPARC_UA64:
1551           return;
1552
1553         default:
1554           break;
1555         }
1556     }
1557   else
1558     {
1559       switch (r_type)
1560         {
1561           // These are the relocation types supported by glibc for sparc 32-bit.
1562         case elfcpp::R_SPARC_RELATIVE:
1563         case elfcpp::R_SPARC_COPY:
1564         case elfcpp::R_SPARC_GLOB_DAT:
1565         case elfcpp::R_SPARC_32:
1566         case elfcpp::R_SPARC_JMP_SLOT:
1567         case elfcpp::R_SPARC_TLS_DTPMOD32:
1568         case elfcpp::R_SPARC_TLS_DTPOFF32:
1569         case elfcpp::R_SPARC_TLS_TPOFF32:
1570         case elfcpp::R_SPARC_TLS_LE_HIX22:
1571         case elfcpp::R_SPARC_TLS_LE_LOX10:
1572         case elfcpp::R_SPARC_8:
1573         case elfcpp::R_SPARC_16:
1574         case elfcpp::R_SPARC_DISP8:
1575         case elfcpp::R_SPARC_DISP16:
1576         case elfcpp::R_SPARC_DISP32:
1577         case elfcpp::R_SPARC_LO10:
1578         case elfcpp::R_SPARC_WDISP30:
1579         case elfcpp::R_SPARC_HI22:
1580         case elfcpp::R_SPARC_UA16:
1581         case elfcpp::R_SPARC_UA32:
1582           return;
1583
1584         default:
1585           break;
1586         }
1587     }
1588
1589   // This prevents us from issuing more than one error per reloc
1590   // section.  But we can still wind up issuing more than one
1591   // error per object file.
1592   if (this->issued_non_pic_error_)
1593     return;
1594   gold_assert(parameters->options().output_is_position_independent());
1595   object->error(_("requires unsupported dynamic reloc; "
1596                   "recompile with -fPIC"));
1597   this->issued_non_pic_error_ = true;
1598   return;
1599 }
1600
1601 // Scan a relocation for a local symbol.
1602
1603 template<int size, bool big_endian>
1604 inline void
1605 Target_sparc<size, big_endian>::Scan::local(
1606                         Symbol_table* symtab,
1607                         Layout* layout,
1608                         Target_sparc<size, big_endian>* target,
1609                         Sized_relobj<size, big_endian>* object,
1610                         unsigned int data_shndx,
1611                         Output_section* output_section,
1612                         const elfcpp::Rela<size, big_endian>& reloc,
1613                         unsigned int r_type,
1614                         const elfcpp::Sym<size, big_endian>& lsym)
1615 {
1616   unsigned int orig_r_type = r_type;
1617
1618   r_type &= 0xff;
1619   switch (r_type)
1620     {
1621     case elfcpp::R_SPARC_NONE:
1622     case elfcpp::R_SPARC_REGISTER:
1623     case elfcpp::R_SPARC_GNU_VTINHERIT:
1624     case elfcpp::R_SPARC_GNU_VTENTRY:
1625       break;
1626
1627     case elfcpp::R_SPARC_64:
1628     case elfcpp::R_SPARC_32:
1629       // If building a shared library (or a position-independent
1630       // executable), we need to create a dynamic relocation for
1631       // this location. The relocation applied at link time will
1632       // apply the link-time value, so we flag the location with
1633       // an R_SPARC_RELATIVE relocation so the dynamic loader can
1634       // relocate it easily.
1635       if (parameters->options().output_is_position_independent())
1636         {
1637           Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1638           unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1639           rela_dyn->add_local_relative(object, r_sym, elfcpp::R_SPARC_RELATIVE,
1640                                        output_section, data_shndx,
1641                                        reloc.get_r_offset(),
1642                                        reloc.get_r_addend());
1643         }
1644       break;
1645
1646     case elfcpp::R_SPARC_HIX22:
1647     case elfcpp::R_SPARC_LOX10:
1648     case elfcpp::R_SPARC_H44:
1649     case elfcpp::R_SPARC_M44:
1650     case elfcpp::R_SPARC_L44:
1651     case elfcpp::R_SPARC_HH22:
1652     case elfcpp::R_SPARC_HM10:
1653     case elfcpp::R_SPARC_LM22:
1654     case elfcpp::R_SPARC_UA64:
1655     case elfcpp::R_SPARC_UA32:
1656     case elfcpp::R_SPARC_UA16:
1657     case elfcpp::R_SPARC_HI22:
1658     case elfcpp::R_SPARC_LO10:
1659     case elfcpp::R_SPARC_OLO10:
1660     case elfcpp::R_SPARC_16:
1661     case elfcpp::R_SPARC_11:
1662     case elfcpp::R_SPARC_10:
1663     case elfcpp::R_SPARC_8:
1664     case elfcpp::R_SPARC_7:
1665     case elfcpp::R_SPARC_6:
1666     case elfcpp::R_SPARC_5:
1667       // If building a shared library (or a position-independent
1668       // executable), we need to create a dynamic relocation for
1669       // this location.
1670       if (parameters->options().output_is_position_independent())
1671         {
1672           Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1673
1674           check_non_pic(object, r_type);
1675           if (lsym.get_st_type() != elfcpp::STT_SECTION)
1676             {
1677               unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1678               rela_dyn->add_local(object, r_sym, orig_r_type, output_section,
1679                                   data_shndx, reloc.get_r_offset(),
1680                                   reloc.get_r_addend());
1681             }
1682           else
1683             {
1684               unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1685               gold_assert(lsym.get_st_value() == 0);
1686               rela_dyn->add_local_relative(object, r_sym, orig_r_type,
1687                                            output_section, data_shndx,
1688                                            reloc.get_r_offset(),
1689                                            reloc.get_r_addend());
1690             }
1691         }
1692       break;
1693
1694     case elfcpp::R_SPARC_WDISP30:
1695     case elfcpp::R_SPARC_WDISP22:
1696     case elfcpp::R_SPARC_WDISP19:
1697     case elfcpp::R_SPARC_WDISP16:
1698     case elfcpp::R_SPARC_DISP8:
1699     case elfcpp::R_SPARC_DISP16:
1700     case elfcpp::R_SPARC_DISP32:
1701     case elfcpp::R_SPARC_DISP64:
1702     case elfcpp::R_SPARC_PC10:
1703     case elfcpp::R_SPARC_PC22:
1704       break;
1705
1706     case elfcpp::R_SPARC_GOT10:
1707     case elfcpp::R_SPARC_GOT13:
1708     case elfcpp::R_SPARC_GOT22:
1709       {
1710         // The symbol requires a GOT entry.
1711         Output_data_got<size, big_endian>* got;
1712         unsigned int r_sym;
1713
1714         got = target->got_section(symtab, layout);
1715         r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1716
1717         // If we are generating a shared object, we need to add a
1718         // dynamic relocation for this symbol's GOT entry.
1719         if (parameters->options().output_is_position_independent())
1720           {
1721             if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD))
1722               {
1723                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1724                 unsigned int off;
1725
1726                 off = got->add_constant(0);
1727                 object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off);
1728                 rela_dyn->add_local_relative(object, r_sym,
1729                                              elfcpp::R_SPARC_RELATIVE,
1730                                              got, off, 0);
1731               }
1732           }
1733         else
1734           got->add_local(object, r_sym, GOT_TYPE_STANDARD);
1735       }
1736       break;
1737
1738       // These are initial TLS relocs, which are expected when
1739       // linking.
1740     case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1741     case elfcpp::R_SPARC_TLS_GD_LO10:
1742     case elfcpp::R_SPARC_TLS_GD_ADD:
1743     case elfcpp::R_SPARC_TLS_GD_CALL:
1744     case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic
1745     case elfcpp::R_SPARC_TLS_LDM_LO10:
1746     case elfcpp::R_SPARC_TLS_LDM_ADD:
1747     case elfcpp::R_SPARC_TLS_LDM_CALL:
1748     case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
1749     case elfcpp::R_SPARC_TLS_LDO_LOX10:
1750     case elfcpp::R_SPARC_TLS_LDO_ADD:
1751     case elfcpp::R_SPARC_TLS_IE_HI22:   // Initial-exec
1752     case elfcpp::R_SPARC_TLS_IE_LO10:
1753     case elfcpp::R_SPARC_TLS_IE_LD:
1754     case elfcpp::R_SPARC_TLS_IE_LDX:
1755     case elfcpp::R_SPARC_TLS_IE_ADD:
1756     case elfcpp::R_SPARC_TLS_LE_HIX22:  // Local-exec
1757     case elfcpp::R_SPARC_TLS_LE_LOX10:
1758       {
1759         bool output_is_shared = parameters->options().shared();
1760         const tls::Tls_optimization optimized_type
1761             = optimize_tls_reloc(!output_is_shared, r_type);
1762         switch (r_type)
1763           {
1764           case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
1765           case elfcpp::R_SPARC_TLS_GD_LO10:
1766           case elfcpp::R_SPARC_TLS_GD_ADD:
1767           case elfcpp::R_SPARC_TLS_GD_CALL:
1768             if (optimized_type == tls::TLSOPT_NONE)
1769               {
1770                 // Create a pair of GOT entries for the module index and
1771                 // dtv-relative offset.
1772                 Output_data_got<size, big_endian>* got
1773                     = target->got_section(symtab, layout);
1774                 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1775                 unsigned int shndx = lsym.get_st_shndx();
1776                 bool is_ordinary;
1777                 shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary);
1778                 if (!is_ordinary)
1779                   object->error(_("local symbol %u has bad shndx %u"),
1780                                 r_sym, shndx);
1781                 else
1782                   got->add_local_pair_with_rela(object, r_sym,
1783                                                 lsym.get_st_shndx(),
1784                                                 GOT_TYPE_TLS_PAIR,
1785                                                 target->rela_dyn_section(layout),
1786                                                 (size == 64
1787                                                  ? elfcpp::R_SPARC_TLS_DTPMOD64
1788                                                  : elfcpp::R_SPARC_TLS_DTPMOD32),
1789                                                  0);
1790                 if (r_type == elfcpp::R_SPARC_TLS_GD_CALL)
1791                   generate_tls_call(symtab, layout, target);
1792               }
1793             else if (optimized_type != tls::TLSOPT_TO_LE)
1794               unsupported_reloc_local(object, r_type);
1795             break;
1796
1797           case elfcpp::R_SPARC_TLS_LDM_HI22 :   // Local-dynamic
1798           case elfcpp::R_SPARC_TLS_LDM_LO10:
1799           case elfcpp::R_SPARC_TLS_LDM_ADD:
1800           case elfcpp::R_SPARC_TLS_LDM_CALL:
1801             if (optimized_type == tls::TLSOPT_NONE)
1802               {
1803                 // Create a GOT entry for the module index.
1804                 target->got_mod_index_entry(symtab, layout, object);
1805
1806                 if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL)
1807                   generate_tls_call(symtab, layout, target);
1808               }
1809             else if (optimized_type != tls::TLSOPT_TO_LE)
1810               unsupported_reloc_local(object, r_type);
1811             break;
1812
1813           case elfcpp::R_SPARC_TLS_LDO_HIX22:   // Alternate local-dynamic
1814           case elfcpp::R_SPARC_TLS_LDO_LOX10:
1815           case elfcpp::R_SPARC_TLS_LDO_ADD:
1816             break;
1817
1818           case elfcpp::R_SPARC_TLS_IE_HI22:     // Initial-exec
1819           case elfcpp::R_SPARC_TLS_IE_LO10:
1820           case elfcpp::R_SPARC_TLS_IE_LD:
1821           case elfcpp::R_SPARC_TLS_IE_LDX:
1822           case elfcpp::R_SPARC_TLS_IE_ADD:
1823             layout->set_has_static_tls();
1824             if (optimized_type == tls::TLSOPT_NONE)
1825               {
1826                 // Create a GOT entry for the tp-relative offset.
1827                 Output_data_got<size, big_endian>* got
1828                   = target->got_section(symtab, layout);
1829                 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1830
1831                 if (!object->local_has_got_offset(r_sym, GOT_TYPE_TLS_OFFSET))
1832                   {
1833                     Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1834                     unsigned int off = got->add_constant(0);
1835
1836                     object->set_local_got_offset(r_sym, GOT_TYPE_TLS_OFFSET,
1837                                                  off);
1838                     rela_dyn->add_local_relative(object, r_sym,
1839                                                  (size == 64 ?
1840                                                   elfcpp::R_SPARC_TLS_TPOFF64 :
1841                                                   elfcpp::R_SPARC_TLS_TPOFF32),
1842                                                  got, off, 0);
1843                   }
1844               }
1845             else if (optimized_type != tls::TLSOPT_TO_LE)
1846               unsupported_reloc_local(object, r_type);
1847             break;
1848
1849           case elfcpp::R_SPARC_TLS_LE_HIX22:    // Local-exec
1850           case elfcpp::R_SPARC_TLS_LE_LOX10:
1851             layout->set_has_static_tls();
1852             if (output_is_shared)
1853               {
1854                 // We need to create a dynamic relocation.
1855                 gold_assert(lsym.get_st_type() != elfcpp::STT_SECTION);
1856                 unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
1857                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1858                 rela_dyn->add_local_relative(object, r_sym, r_type,
1859                                              output_section, data_shndx,
1860                                              reloc.get_r_offset(), 0);
1861               }
1862             break;
1863           }
1864       }
1865       break;
1866
1867       // These are relocations which should only be seen by the
1868       // dynamic linker, and should never be seen here.
1869     case elfcpp::R_SPARC_COPY:
1870     case elfcpp::R_SPARC_GLOB_DAT:
1871     case elfcpp::R_SPARC_JMP_SLOT:
1872     case elfcpp::R_SPARC_RELATIVE:
1873     case elfcpp::R_SPARC_TLS_DTPMOD64:
1874     case elfcpp::R_SPARC_TLS_DTPMOD32:
1875     case elfcpp::R_SPARC_TLS_DTPOFF64:
1876     case elfcpp::R_SPARC_TLS_DTPOFF32:
1877     case elfcpp::R_SPARC_TLS_TPOFF64:
1878     case elfcpp::R_SPARC_TLS_TPOFF32:
1879       gold_error(_("%s: unexpected reloc %u in object file"),
1880                  object->name().c_str(), r_type);
1881       break;
1882
1883     default:
1884       unsupported_reloc_local(object, r_type);
1885       break;
1886     }
1887 }
1888
1889 // Report an unsupported relocation against a global symbol.
1890
1891 template<int size, bool big_endian>
1892 void
1893 Target_sparc<size, big_endian>::Scan::unsupported_reloc_global(
1894                         Sized_relobj<size, big_endian>* object,
1895                         unsigned int r_type,
1896                         Symbol* gsym)
1897 {
1898   gold_error(_("%s: unsupported reloc %u against global symbol %s"),
1899              object->name().c_str(), r_type, gsym->demangled_name().c_str());
1900 }
1901
1902 // Scan a relocation for a global symbol.
1903
1904 template<int size, bool big_endian>
1905 inline void
1906 Target_sparc<size, big_endian>::Scan::global(
1907                                 Symbol_table* symtab,
1908                                 Layout* layout,
1909                                 Target_sparc<size, big_endian>* target,
1910                                 Sized_relobj<size, big_endian>* object,
1911                                 unsigned int data_shndx,
1912                                 Output_section* output_section,
1913                                 const elfcpp::Rela<size, big_endian>& reloc,
1914                                 unsigned int r_type,
1915                                 Symbol* gsym)
1916 {
1917   unsigned int orig_r_type = r_type;
1918
1919   // A reference to _GLOBAL_OFFSET_TABLE_ implies that we need a got
1920   // section.  We check here to avoid creating a dynamic reloc against
1921   // _GLOBAL_OFFSET_TABLE_.
1922   if (!target->has_got_section()
1923       && strcmp(gsym->name(), "_GLOBAL_OFFSET_TABLE_") == 0)
1924     target->got_section(symtab, layout);
1925
1926   r_type &= 0xff;
1927   switch (r_type)
1928     {
1929     case elfcpp::R_SPARC_NONE:
1930     case elfcpp::R_SPARC_REGISTER:
1931     case elfcpp::R_SPARC_GNU_VTINHERIT:
1932     case elfcpp::R_SPARC_GNU_VTENTRY:
1933       break;
1934
1935     case elfcpp::R_SPARC_PLT64:
1936     case elfcpp::R_SPARC_PLT32:
1937     case elfcpp::R_SPARC_HIPLT22:
1938     case elfcpp::R_SPARC_LOPLT10:
1939     case elfcpp::R_SPARC_PCPLT32:
1940     case elfcpp::R_SPARC_PCPLT22:
1941     case elfcpp::R_SPARC_PCPLT10:
1942     case elfcpp::R_SPARC_WPLT30:
1943       // If the symbol is fully resolved, this is just a PC32 reloc.
1944       // Otherwise we need a PLT entry.
1945       if (gsym->final_value_is_known())
1946         break;
1947       // If building a shared library, we can also skip the PLT entry
1948       // if the symbol is defined in the output file and is protected
1949       // or hidden.
1950       if (gsym->is_defined()
1951           && !gsym->is_from_dynobj()
1952           && !gsym->is_preemptible())
1953         break;
1954       target->make_plt_entry(symtab, layout, gsym);
1955       break;
1956
1957     case elfcpp::R_SPARC_DISP8:
1958     case elfcpp::R_SPARC_DISP16:
1959     case elfcpp::R_SPARC_DISP32:
1960     case elfcpp::R_SPARC_DISP64:
1961     case elfcpp::R_SPARC_PC_HH22:
1962     case elfcpp::R_SPARC_PC_HM10:
1963     case elfcpp::R_SPARC_PC_LM22:
1964     case elfcpp::R_SPARC_PC10:
1965     case elfcpp::R_SPARC_PC22:
1966     case elfcpp::R_SPARC_WDISP30:
1967     case elfcpp::R_SPARC_WDISP22:
1968     case elfcpp::R_SPARC_WDISP19:
1969     case elfcpp::R_SPARC_WDISP16:
1970       {
1971         if (gsym->needs_plt_entry())
1972           target->make_plt_entry(symtab, layout, gsym);
1973         // Make a dynamic relocation if necessary.
1974         int flags = Symbol::NON_PIC_REF;
1975         if (gsym->type() == elfcpp::STT_FUNC)
1976           flags |= Symbol::FUNCTION_CALL;
1977         if (gsym->needs_dynamic_reloc(flags))
1978           {
1979             if (gsym->may_need_copy_reloc())
1980               {
1981                 target->copy_reloc(symtab, layout, object,
1982                                    data_shndx, output_section, gsym,
1983                                    reloc);
1984               }
1985             else
1986               {
1987                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
1988                 check_non_pic(object, r_type);
1989                 rela_dyn->add_global(gsym, orig_r_type, output_section, object,
1990                                      data_shndx, reloc.get_r_offset(),
1991                                      reloc.get_r_addend());
1992               }
1993           }
1994       }
1995       break;
1996
1997     case elfcpp::R_SPARC_UA64:
1998     case elfcpp::R_SPARC_64:
1999     case elfcpp::R_SPARC_HIX22:
2000     case elfcpp::R_SPARC_LOX10:
2001     case elfcpp::R_SPARC_H44:
2002     case elfcpp::R_SPARC_M44:
2003     case elfcpp::R_SPARC_L44:
2004     case elfcpp::R_SPARC_HH22:
2005     case elfcpp::R_SPARC_HM10:
2006     case elfcpp::R_SPARC_LM22:
2007     case elfcpp::R_SPARC_HI22:
2008     case elfcpp::R_SPARC_LO10:
2009     case elfcpp::R_SPARC_OLO10:
2010     case elfcpp::R_SPARC_UA32:
2011     case elfcpp::R_SPARC_32:
2012     case elfcpp::R_SPARC_UA16:
2013     case elfcpp::R_SPARC_16:
2014     case elfcpp::R_SPARC_11:
2015     case elfcpp::R_SPARC_10:
2016     case elfcpp::R_SPARC_8:
2017     case elfcpp::R_SPARC_7:
2018     case elfcpp::R_SPARC_6:
2019     case elfcpp::R_SPARC_5:
2020       {
2021         // Make a PLT entry if necessary.
2022         if (gsym->needs_plt_entry())
2023           {
2024             target->make_plt_entry(symtab, layout, gsym);
2025             // Since this is not a PC-relative relocation, we may be
2026             // taking the address of a function. In that case we need to
2027             // set the entry in the dynamic symbol table to the address of
2028             // the PLT entry.
2029             if (gsym->is_from_dynobj() && !parameters->options().shared())
2030               gsym->set_needs_dynsym_value();
2031           }
2032         // Make a dynamic relocation if necessary.
2033         if (gsym->needs_dynamic_reloc(Symbol::ABSOLUTE_REF))
2034           {
2035             if (gsym->may_need_copy_reloc())
2036               {
2037                 target->copy_reloc(symtab, layout, object,
2038                                    data_shndx, output_section, gsym, reloc);
2039               }
2040             else if ((r_type == elfcpp::R_SPARC_32
2041                       || r_type == elfcpp::R_SPARC_64)
2042                      && gsym->can_use_relative_reloc(false))
2043               {
2044                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2045                 rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE,
2046                                               output_section, object,
2047                                               data_shndx, reloc.get_r_offset(),
2048                                               reloc.get_r_addend());
2049               }
2050             else
2051               {
2052                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2053
2054                 check_non_pic(object, r_type);
2055                 if (gsym->is_from_dynobj()
2056                     || gsym->is_undefined()
2057                     || gsym->is_preemptible())
2058                   rela_dyn->add_global(gsym, orig_r_type, output_section,
2059                                        object, data_shndx,
2060                                        reloc.get_r_offset(),
2061                                        reloc.get_r_addend());
2062                 else
2063                   rela_dyn->add_global_relative(gsym, orig_r_type,
2064                                                 output_section, object,
2065                                                 data_shndx,
2066                                                 reloc.get_r_offset(),
2067                                                 reloc.get_r_addend());
2068               }
2069           }
2070       }
2071       break;
2072
2073     case elfcpp::R_SPARC_GOT10:
2074     case elfcpp::R_SPARC_GOT13:
2075     case elfcpp::R_SPARC_GOT22:
2076       {
2077         // The symbol requires a GOT entry.
2078         Output_data_got<size, big_endian>* got;
2079
2080         got = target->got_section(symtab, layout);
2081         if (gsym->final_value_is_known())
2082           got->add_global(gsym, GOT_TYPE_STANDARD);
2083         else
2084           {
2085             // If this symbol is not fully resolved, we need to add a
2086             // dynamic relocation for it.
2087             Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2088             if (gsym->is_from_dynobj()
2089                 || gsym->is_undefined()
2090                 || gsym->is_preemptible())
2091               got->add_global_with_rela(gsym, GOT_TYPE_STANDARD, rela_dyn,
2092                                         elfcpp::R_SPARC_GLOB_DAT);
2093             else if (!gsym->has_got_offset(GOT_TYPE_STANDARD))
2094               {
2095                 unsigned int off = got->add_constant(0);
2096
2097                 gsym->set_got_offset(GOT_TYPE_STANDARD, off);
2098                 rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE,
2099                                               got, off, 0);
2100               }
2101           }
2102       }
2103       break;
2104
2105       // These are initial tls relocs, which are expected when
2106       // linking.
2107     case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2108     case elfcpp::R_SPARC_TLS_GD_LO10:
2109     case elfcpp::R_SPARC_TLS_GD_ADD:
2110     case elfcpp::R_SPARC_TLS_GD_CALL:
2111     case elfcpp::R_SPARC_TLS_LDM_HI22:  // Local-dynamic
2112     case elfcpp::R_SPARC_TLS_LDM_LO10:
2113     case elfcpp::R_SPARC_TLS_LDM_ADD:
2114     case elfcpp::R_SPARC_TLS_LDM_CALL:
2115     case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
2116     case elfcpp::R_SPARC_TLS_LDO_LOX10:
2117     case elfcpp::R_SPARC_TLS_LDO_ADD:
2118     case elfcpp::R_SPARC_TLS_LE_HIX22:
2119     case elfcpp::R_SPARC_TLS_LE_LOX10:
2120     case elfcpp::R_SPARC_TLS_IE_HI22:   // Initial-exec
2121     case elfcpp::R_SPARC_TLS_IE_LO10:
2122     case elfcpp::R_SPARC_TLS_IE_LD:
2123     case elfcpp::R_SPARC_TLS_IE_LDX:
2124     case elfcpp::R_SPARC_TLS_IE_ADD:
2125       {
2126         const bool is_final = gsym->final_value_is_known();
2127         const tls::Tls_optimization optimized_type
2128             = optimize_tls_reloc(is_final, r_type);
2129         switch (r_type)
2130           {
2131           case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
2132           case elfcpp::R_SPARC_TLS_GD_LO10:
2133           case elfcpp::R_SPARC_TLS_GD_ADD:
2134           case elfcpp::R_SPARC_TLS_GD_CALL:
2135             if (optimized_type == tls::TLSOPT_NONE)
2136               {
2137                 // Create a pair of GOT entries for the module index and
2138                 // dtv-relative offset.
2139                 Output_data_got<size, big_endian>* got
2140                     = target->got_section(symtab, layout);
2141                 got->add_global_pair_with_rela(gsym, GOT_TYPE_TLS_PAIR,
2142                                                target->rela_dyn_section(layout),
2143                                                (size == 64 ?
2144                                                 elfcpp::R_SPARC_TLS_DTPMOD64 :
2145                                                 elfcpp::R_SPARC_TLS_DTPMOD32),
2146                                                (size == 64 ?
2147                                                 elfcpp::R_SPARC_TLS_DTPOFF64 :
2148                                                 elfcpp::R_SPARC_TLS_DTPOFF32));
2149
2150                 // Emit R_SPARC_WPLT30 against "__tls_get_addr"
2151                 if (r_type == elfcpp::R_SPARC_TLS_GD_CALL)
2152                   generate_tls_call(symtab, layout, target);
2153               }
2154             else if (optimized_type == tls::TLSOPT_TO_IE)
2155               {
2156                 // Create a GOT entry for the tp-relative offset.
2157                 Output_data_got<size, big_endian>* got
2158                     = target->got_section(symtab, layout);
2159                 got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET,
2160                                           target->rela_dyn_section(layout),
2161                                           (size == 64 ?
2162                                            elfcpp::R_SPARC_TLS_TPOFF64 :
2163                                            elfcpp::R_SPARC_TLS_TPOFF32));
2164               }
2165             else if (optimized_type != tls::TLSOPT_TO_LE)
2166               unsupported_reloc_global(object, r_type, gsym);
2167             break;
2168
2169           case elfcpp::R_SPARC_TLS_LDM_HI22:    // Local-dynamic
2170           case elfcpp::R_SPARC_TLS_LDM_LO10:
2171           case elfcpp::R_SPARC_TLS_LDM_ADD:
2172           case elfcpp::R_SPARC_TLS_LDM_CALL:
2173             if (optimized_type == tls::TLSOPT_NONE)
2174               {
2175                 // Create a GOT entry for the module index.
2176                 target->got_mod_index_entry(symtab, layout, object);
2177
2178                 if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL)
2179                   generate_tls_call(symtab, layout, target);
2180               }
2181             else if (optimized_type != tls::TLSOPT_TO_LE)
2182               unsupported_reloc_global(object, r_type, gsym);
2183             break;
2184
2185           case elfcpp::R_SPARC_TLS_LDO_HIX22:   // Alternate local-dynamic
2186           case elfcpp::R_SPARC_TLS_LDO_LOX10:
2187           case elfcpp::R_SPARC_TLS_LDO_ADD:
2188             break;
2189
2190           case elfcpp::R_SPARC_TLS_LE_HIX22:
2191           case elfcpp::R_SPARC_TLS_LE_LOX10:
2192             layout->set_has_static_tls();
2193             if (parameters->options().shared())
2194               {
2195                 Reloc_section* rela_dyn = target->rela_dyn_section(layout);
2196                 rela_dyn->add_global_relative(gsym, orig_r_type,
2197                                               output_section, object,
2198                                               data_shndx, reloc.get_r_offset(),
2199                                               0);
2200               }
2201             break;
2202
2203           case elfcpp::R_SPARC_TLS_IE_HI22:     // Initial-exec
2204           case elfcpp::R_SPARC_TLS_IE_LO10:
2205           case elfcpp::R_SPARC_TLS_IE_LD:
2206           case elfcpp::R_SPARC_TLS_IE_LDX:
2207           case elfcpp::R_SPARC_TLS_IE_ADD:
2208             layout->set_has_static_tls();
2209             if (optimized_type == tls::TLSOPT_NONE)
2210               {
2211                 // Create a GOT entry for the tp-relative offset.
2212                 Output_data_got<size, big_endian>* got
2213                   = target->got_section(symtab, layout);
2214                 got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET,
2215                                           target->rela_dyn_section(layout),
2216                                           (size == 64 ?
2217                                            elfcpp::R_SPARC_TLS_TPOFF64 :
2218                                            elfcpp::R_SPARC_TLS_TPOFF32));
2219               }
2220             else if (optimized_type != tls::TLSOPT_TO_LE)
2221               unsupported_reloc_global(object, r_type, gsym);
2222             break;
2223           }
2224       }
2225       break;
2226
2227       // These are relocations which should only be seen by the
2228       // dynamic linker, and should never be seen here.
2229     case elfcpp::R_SPARC_COPY:
2230     case elfcpp::R_SPARC_GLOB_DAT:
2231     case elfcpp::R_SPARC_JMP_SLOT:
2232     case elfcpp::R_SPARC_RELATIVE:
2233     case elfcpp::R_SPARC_TLS_DTPMOD64:
2234     case elfcpp::R_SPARC_TLS_DTPMOD32:
2235     case elfcpp::R_SPARC_TLS_DTPOFF64:
2236     case elfcpp::R_SPARC_TLS_DTPOFF32:
2237     case elfcpp::R_SPARC_TLS_TPOFF64:
2238     case elfcpp::R_SPARC_TLS_TPOFF32:
2239       gold_error(_("%s: unexpected reloc %u in object file"),
2240                  object->name().c_str(), r_type);
2241       break;
2242
2243     default:
2244       unsupported_reloc_global(object, r_type, gsym);
2245       break;
2246     }
2247 }
2248
2249 // Process relocations for gc.
2250
2251 template<int size, bool big_endian>
2252 void
2253 Target_sparc<size, big_endian>::gc_process_relocs(
2254                         Symbol_table* symtab,
2255                         Layout* layout,
2256                         Sized_relobj<size, big_endian>* object,
2257                         unsigned int data_shndx,
2258                         unsigned int,
2259                         const unsigned char* prelocs,
2260                         size_t reloc_count,
2261                         Output_section* output_section,
2262                         bool needs_special_offset_handling,
2263                         size_t local_symbol_count,
2264                         const unsigned char* plocal_symbols)
2265 {
2266   typedef Target_sparc<size, big_endian> Sparc;
2267   typedef typename Target_sparc<size, big_endian>::Scan Scan;
2268
2269   gold::gc_process_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>(
2270     symtab,
2271     layout,
2272     this,
2273     object,
2274     data_shndx,
2275     prelocs,
2276     reloc_count,
2277     output_section,
2278     needs_special_offset_handling,
2279     local_symbol_count,
2280     plocal_symbols);
2281 }
2282
2283 // Scan relocations for a section.
2284
2285 template<int size, bool big_endian>
2286 void
2287 Target_sparc<size, big_endian>::scan_relocs(
2288                         Symbol_table* symtab,
2289                         Layout* layout,
2290                         Sized_relobj<size, big_endian>* object,
2291                         unsigned int data_shndx,
2292                         unsigned int sh_type,
2293                         const unsigned char* prelocs,
2294                         size_t reloc_count,
2295                         Output_section* output_section,
2296                         bool needs_special_offset_handling,
2297                         size_t local_symbol_count,
2298                         const unsigned char* plocal_symbols)
2299 {
2300   typedef Target_sparc<size, big_endian> Sparc;
2301   typedef typename Target_sparc<size, big_endian>::Scan Scan;
2302
2303   if (sh_type == elfcpp::SHT_REL)
2304     {
2305       gold_error(_("%s: unsupported REL reloc section"),
2306                  object->name().c_str());
2307       return;
2308     }
2309
2310   gold::scan_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>(
2311     symtab,
2312     layout,
2313     this,
2314     object,
2315     data_shndx,
2316     prelocs,
2317     reloc_count,
2318     output_section,
2319     needs_special_offset_handling,
2320     local_symbol_count,
2321     plocal_symbols);
2322 }
2323
2324 // Finalize the sections.
2325
2326 template<int size, bool big_endian>
2327 void
2328 Target_sparc<size, big_endian>::do_finalize_sections(
2329     Layout* layout,
2330     const Input_objects*,
2331     Symbol_table*)
2332 {
2333   // Fill in some more dynamic tags.
2334   const Reloc_section* rel_plt = (this->plt_ == NULL
2335                                   ? NULL
2336                                   : this->plt_->rel_plt());
2337   layout->add_target_dynamic_tags(false, this->plt_, rel_plt,
2338                                   this->rela_dyn_, true);
2339
2340   // Emit any relocs we saved in an attempt to avoid generating COPY
2341   // relocs.
2342   if (this->copy_relocs_.any_saved_relocs())
2343     this->copy_relocs_.emit(this->rela_dyn_section(layout));
2344 }
2345
2346 // Perform a relocation.
2347
2348 template<int size, bool big_endian>
2349 inline bool
2350 Target_sparc<size, big_endian>::Relocate::relocate(
2351                         const Relocate_info<size, big_endian>* relinfo,
2352                         Target_sparc* target,
2353                         Output_section*,
2354                         size_t relnum,
2355                         const elfcpp::Rela<size, big_endian>& rela,
2356                         unsigned int r_type,
2357                         const Sized_symbol<size>* gsym,
2358                         const Symbol_value<size>* psymval,
2359                         unsigned char* view,
2360                         typename elfcpp::Elf_types<size>::Elf_Addr address,
2361                         section_size_type view_size)
2362 {
2363   r_type &= 0xff;
2364
2365   if (this->ignore_gd_add_)
2366     {
2367       if (r_type != elfcpp::R_SPARC_TLS_GD_ADD)
2368         gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2369                                _("missing expected TLS relocation"));
2370       else
2371         {
2372           this->ignore_gd_add_ = false;
2373           return false;
2374         }
2375     }
2376
2377   typedef Sparc_relocate_functions<size, big_endian> Reloc;
2378
2379   // Pick the value to use for symbols defined in shared objects.
2380   Symbol_value<size> symval;
2381   if (gsym != NULL
2382       && gsym->use_plt_offset(r_type == elfcpp::R_SPARC_DISP8
2383                               || r_type == elfcpp::R_SPARC_DISP16
2384                               || r_type == elfcpp::R_SPARC_DISP32
2385                               || r_type == elfcpp::R_SPARC_DISP64
2386                               || r_type == elfcpp::R_SPARC_PC_HH22
2387                               || r_type == elfcpp::R_SPARC_PC_HM10
2388                               || r_type == elfcpp::R_SPARC_PC_LM22
2389                               || r_type == elfcpp::R_SPARC_PC10
2390                               || r_type == elfcpp::R_SPARC_PC22
2391                               || r_type == elfcpp::R_SPARC_WDISP30
2392                               || r_type == elfcpp::R_SPARC_WDISP22
2393                               || r_type == elfcpp::R_SPARC_WDISP19
2394                               || r_type == elfcpp::R_SPARC_WDISP16))
2395     {
2396       elfcpp::Elf_Xword value;
2397
2398       value = target->plt_section()->address() + gsym->plt_offset();
2399
2400       symval.set_output_value(value);
2401
2402       psymval = &symval;
2403     }
2404
2405   const Sized_relobj<size, big_endian>* object = relinfo->object;
2406   const elfcpp::Elf_Xword addend = rela.get_r_addend();
2407
2408   // Get the GOT offset if needed.  Unlike i386 and x86_64, our GOT
2409   // pointer points to the beginning, not the end, of the table.
2410   // So we just use the plain offset.
2411   bool have_got_offset = false;
2412   unsigned int got_offset = 0;
2413   switch (r_type)
2414     {
2415     case elfcpp::R_SPARC_GOT10:
2416     case elfcpp::R_SPARC_GOT13:
2417     case elfcpp::R_SPARC_GOT22:
2418       if (gsym != NULL)
2419         {
2420           gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD));
2421           got_offset = gsym->got_offset(GOT_TYPE_STANDARD);
2422         }
2423       else
2424         {
2425           unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
2426           gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD));
2427           got_offset = object->local_got_offset(r_sym, GOT_TYPE_STANDARD);
2428         }
2429       have_got_offset = true;
2430       break;
2431
2432     default:
2433       break;
2434     }
2435
2436   switch (r_type)
2437     {
2438     case elfcpp::R_SPARC_NONE:
2439     case elfcpp::R_SPARC_REGISTER:
2440     case elfcpp::R_SPARC_GNU_VTINHERIT:
2441     case elfcpp::R_SPARC_GNU_VTENTRY:
2442       break;
2443
2444     case elfcpp::R_SPARC_8:
2445       Relocate_functions<size, big_endian>::rela8(view, object,
2446                                                   psymval, addend);
2447       break;
2448
2449     case elfcpp::R_SPARC_16:
2450       if (rela.get_r_offset() & 0x1)
2451         {
2452           // The assembler can sometimes emit unaligned relocations
2453           // for dwarf2 cfi directives.
2454           Reloc::ua16(view, object, psymval, addend);
2455         }
2456       else
2457         Relocate_functions<size, big_endian>::rela16(view, object,
2458                                                      psymval, addend);
2459       break;
2460
2461     case elfcpp::R_SPARC_32:
2462       if (!parameters->options().output_is_position_independent())
2463         {
2464           if (rela.get_r_offset() & 0x3)
2465             {
2466               // The assembler can sometimes emit unaligned relocations
2467               // for dwarf2 cfi directives.
2468               Reloc::ua32(view, object, psymval, addend);
2469             }
2470           else
2471             Relocate_functions<size, big_endian>::rela32(view, object,
2472                                                          psymval, addend);
2473         }
2474       break;
2475
2476     case elfcpp::R_SPARC_DISP8:
2477       Reloc::disp8(view, object, psymval, addend, address);
2478       break;
2479
2480     case elfcpp::R_SPARC_DISP16:
2481       Reloc::disp16(view, object, psymval, addend, address);
2482       break;
2483
2484     case elfcpp::R_SPARC_DISP32:
2485       Reloc::disp32(view, object, psymval, addend, address);
2486       break;
2487
2488     case elfcpp::R_SPARC_DISP64:
2489       Reloc::disp64(view, object, psymval, addend, address);
2490       break;
2491
2492     case elfcpp::R_SPARC_WDISP30:
2493     case elfcpp::R_SPARC_WPLT30:
2494       Reloc::wdisp30(view, object, psymval, addend, address);
2495       break;
2496
2497     case elfcpp::R_SPARC_WDISP22:
2498       Reloc::wdisp22(view, object, psymval, addend, address);
2499       break;
2500
2501     case elfcpp::R_SPARC_WDISP19:
2502       Reloc::wdisp19(view, object, psymval, addend, address);
2503       break;
2504
2505     case elfcpp::R_SPARC_WDISP16:
2506       Reloc::wdisp16(view, object, psymval, addend, address);
2507       break;
2508
2509     case elfcpp::R_SPARC_HI22:
2510       Reloc::hi22(view, object, psymval, addend);
2511       break;
2512
2513     case elfcpp::R_SPARC_22:
2514       Reloc::rela32_22(view, object, psymval, addend);
2515       break;
2516
2517     case elfcpp::R_SPARC_13:
2518       Reloc::rela32_13(view, object, psymval, addend);
2519       break;
2520
2521     case elfcpp::R_SPARC_LO10:
2522       Reloc::lo10(view, object, psymval, addend);
2523       break;
2524
2525     case elfcpp::R_SPARC_GOT10:
2526       Reloc::lo10(view, got_offset, addend);
2527       break;
2528
2529     case elfcpp::R_SPARC_GOT13:
2530       Reloc::rela32_13(view, got_offset, addend);
2531       break;
2532
2533     case elfcpp::R_SPARC_GOT22:
2534       Reloc::hi22(view, got_offset, addend);
2535       break;
2536
2537     case elfcpp::R_SPARC_PC10:
2538       Reloc::pc10(view, object, psymval, addend, address);
2539       break;
2540
2541     case elfcpp::R_SPARC_PC22:
2542       Reloc::pc22(view, object, psymval, addend, address);
2543       break;
2544
2545     case elfcpp::R_SPARC_TLS_DTPOFF32:
2546     case elfcpp::R_SPARC_UA32:
2547       Reloc::ua32(view, object, psymval, addend);
2548       break;
2549
2550     case elfcpp::R_SPARC_PLT64:
2551       Relocate_functions<size, big_endian>::rela64(view, object,
2552                                                    psymval, addend);
2553       break;
2554
2555     case elfcpp::R_SPARC_PLT32:
2556       Relocate_functions<size, big_endian>::rela32(view, object,
2557                                                    psymval, addend);
2558       break;
2559
2560     case elfcpp::R_SPARC_HIPLT22:
2561       Reloc::hi22(view, object, psymval, addend);
2562       break;
2563
2564     case elfcpp::R_SPARC_LOPLT10:
2565       Reloc::lo10(view, object, psymval, addend);
2566       break;
2567
2568     case elfcpp::R_SPARC_PCPLT32:
2569       Reloc::disp32(view, object, psymval, addend, address);
2570       break;
2571
2572     case elfcpp::R_SPARC_PCPLT22:
2573       Reloc::pcplt22(view, object, psymval, addend, address);
2574       break;
2575
2576     case elfcpp::R_SPARC_PCPLT10:
2577       Reloc::lo10(view, object, psymval, addend, address);
2578       break;
2579
2580     case elfcpp::R_SPARC_64:
2581       if (!parameters->options().output_is_position_independent())
2582         {
2583           if (rela.get_r_offset() & 0x7)
2584             {
2585               // The assembler can sometimes emit unaligned relocations
2586               // for dwarf2 cfi directives.
2587               Reloc::ua64(view, object, psymval, addend);
2588             }
2589           else
2590             Relocate_functions<size, big_endian>::rela64(view, object,
2591                                                          psymval, addend);
2592         }
2593       break;
2594
2595     case elfcpp::R_SPARC_OLO10:
2596       {
2597         unsigned int addend2 = rela.get_r_info() & 0xffffffff;
2598         addend2 = ((addend2 >> 8) ^ 0x800000) - 0x800000;
2599         Reloc::olo10(view, object, psymval, addend, addend2);
2600       }
2601       break;
2602
2603     case elfcpp::R_SPARC_HH22:
2604       Reloc::hh22(view, object, psymval, addend);
2605       break;
2606
2607     case elfcpp::R_SPARC_PC_HH22:
2608       Reloc::pc_hh22(view, object, psymval, addend, address);
2609       break;
2610
2611     case elfcpp::R_SPARC_HM10:
2612       Reloc::hm10(view, object, psymval, addend);
2613       break;
2614
2615     case elfcpp::R_SPARC_PC_HM10:
2616       Reloc::pc_hm10(view, object, psymval, addend, address);
2617       break;
2618
2619     case elfcpp::R_SPARC_LM22:
2620       Reloc::hi22(view, object, psymval, addend);
2621       break;
2622
2623     case elfcpp::R_SPARC_PC_LM22:
2624       Reloc::pcplt22(view, object, psymval, addend, address);
2625       break;
2626
2627     case elfcpp::R_SPARC_11:
2628       Reloc::rela32_11(view, object, psymval, addend);
2629       break;
2630
2631     case elfcpp::R_SPARC_10:
2632       Reloc::rela32_10(view, object, psymval, addend);
2633       break;
2634
2635     case elfcpp::R_SPARC_7:
2636       Reloc::rela32_7(view, object, psymval, addend);
2637       break;
2638
2639     case elfcpp::R_SPARC_6:
2640       Reloc::rela32_6(view, object, psymval, addend);
2641       break;
2642
2643     case elfcpp::R_SPARC_5:
2644       Reloc::rela32_5(view, object, psymval, addend);
2645       break;
2646
2647     case elfcpp::R_SPARC_HIX22:
2648       Reloc::hix22(view, object, psymval, addend);
2649       break;
2650
2651     case elfcpp::R_SPARC_LOX10:
2652       Reloc::lox10(view, object, psymval, addend);
2653       break;
2654
2655     case elfcpp::R_SPARC_H44:
2656       Reloc::h44(view, object, psymval, addend);
2657       break;
2658
2659     case elfcpp::R_SPARC_M44:
2660       Reloc::m44(view, object, psymval, addend);
2661       break;
2662
2663     case elfcpp::R_SPARC_L44:
2664       Reloc::l44(view, object, psymval, addend);
2665       break;
2666
2667     case elfcpp::R_SPARC_TLS_DTPOFF64:
2668     case elfcpp::R_SPARC_UA64:
2669       Reloc::ua64(view, object, psymval, addend);
2670       break;
2671
2672     case elfcpp::R_SPARC_UA16:
2673       Reloc::ua16(view, object, psymval, addend);
2674       break;
2675
2676     case elfcpp::R_SPARC_TLS_GD_HI22:
2677     case elfcpp::R_SPARC_TLS_GD_LO10:
2678     case elfcpp::R_SPARC_TLS_GD_ADD:
2679     case elfcpp::R_SPARC_TLS_GD_CALL:
2680     case elfcpp::R_SPARC_TLS_LDM_HI22:
2681     case elfcpp::R_SPARC_TLS_LDM_LO10:
2682     case elfcpp::R_SPARC_TLS_LDM_ADD:
2683     case elfcpp::R_SPARC_TLS_LDM_CALL:
2684     case elfcpp::R_SPARC_TLS_LDO_HIX22:
2685     case elfcpp::R_SPARC_TLS_LDO_LOX10:
2686     case elfcpp::R_SPARC_TLS_LDO_ADD:
2687     case elfcpp::R_SPARC_TLS_IE_HI22:
2688     case elfcpp::R_SPARC_TLS_IE_LO10:
2689     case elfcpp::R_SPARC_TLS_IE_LD:
2690     case elfcpp::R_SPARC_TLS_IE_LDX:
2691     case elfcpp::R_SPARC_TLS_IE_ADD:
2692     case elfcpp::R_SPARC_TLS_LE_HIX22:
2693     case elfcpp::R_SPARC_TLS_LE_LOX10:
2694       this->relocate_tls(relinfo, target, relnum, rela,
2695                          r_type, gsym, psymval, view,
2696                          address, view_size);
2697       break;
2698
2699     case elfcpp::R_SPARC_COPY:
2700     case elfcpp::R_SPARC_GLOB_DAT:
2701     case elfcpp::R_SPARC_JMP_SLOT:
2702     case elfcpp::R_SPARC_RELATIVE:
2703       // These are outstanding tls relocs, which are unexpected when
2704       // linking.
2705     case elfcpp::R_SPARC_TLS_DTPMOD64:
2706     case elfcpp::R_SPARC_TLS_DTPMOD32:
2707     case elfcpp::R_SPARC_TLS_TPOFF64:
2708     case elfcpp::R_SPARC_TLS_TPOFF32:
2709       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2710                              _("unexpected reloc %u in object file"),
2711                              r_type);
2712       break;
2713
2714     default:
2715       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2716                              _("unsupported reloc %u"),
2717                              r_type);
2718       break;
2719     }
2720
2721   return true;
2722 }
2723
2724 // Perform a TLS relocation.
2725
2726 template<int size, bool big_endian>
2727 inline void
2728 Target_sparc<size, big_endian>::Relocate::relocate_tls(
2729                         const Relocate_info<size, big_endian>* relinfo,
2730                         Target_sparc<size, big_endian>* target,
2731                         size_t relnum,
2732                         const elfcpp::Rela<size, big_endian>& rela,
2733                         unsigned int r_type,
2734                         const Sized_symbol<size>* gsym,
2735                         const Symbol_value<size>* psymval,
2736                         unsigned char* view,
2737                         typename elfcpp::Elf_types<size>::Elf_Addr address,
2738                         section_size_type)
2739 {
2740   Output_segment* tls_segment = relinfo->layout->tls_segment();
2741   typedef Sparc_relocate_functions<size, big_endian> Reloc;
2742   const Sized_relobj<size, big_endian>* object = relinfo->object;
2743   typedef typename elfcpp::Swap<32, true>::Valtype Insntype;
2744
2745   const elfcpp::Elf_Xword addend = rela.get_r_addend();
2746   typename elfcpp::Elf_types<size>::Elf_Addr value = psymval->value(object, 0);
2747
2748   const bool is_final =
2749     (gsym == NULL
2750      ? !parameters->options().output_is_position_independent()
2751      : gsym->final_value_is_known());
2752   const tls::Tls_optimization optimized_type
2753       = optimize_tls_reloc(is_final, r_type);
2754
2755   switch (r_type)
2756     {
2757     case elfcpp::R_SPARC_TLS_GD_HI22:
2758     case elfcpp::R_SPARC_TLS_GD_LO10:
2759     case elfcpp::R_SPARC_TLS_GD_ADD:
2760     case elfcpp::R_SPARC_TLS_GD_CALL:
2761       if (optimized_type == tls::TLSOPT_TO_LE)
2762         {
2763           Insntype* wv = reinterpret_cast<Insntype*>(view);
2764           Insntype val;
2765
2766           value -= tls_segment->memsz();
2767
2768           switch (r_type)
2769             {
2770             case elfcpp::R_SPARC_TLS_GD_HI22:
2771               // TLS_GD_HI22 --> TLS_LE_HIX22
2772               Reloc::hix22(view, value, addend);
2773               break;
2774
2775             case elfcpp::R_SPARC_TLS_GD_LO10:
2776               // TLS_GD_LO10 --> TLS_LE_LOX10
2777               Reloc::lox10(view, value, addend);
2778               break;
2779
2780             case elfcpp::R_SPARC_TLS_GD_ADD:
2781               // add %reg1, %reg2, %reg3 --> mov %g7, %reg2, %reg3
2782               val = elfcpp::Swap<32, true>::readval(wv);
2783               val = (val & ~0x7c000) | 0x1c000;
2784               elfcpp::Swap<32, true>::writeval(wv, val);
2785               break;
2786             case elfcpp::R_SPARC_TLS_GD_CALL:
2787               // call __tls_get_addr --> nop
2788               elfcpp::Swap<32, true>::writeval(wv, sparc_nop);
2789               break;
2790             }
2791           break;
2792         }
2793       else
2794         {
2795           unsigned int got_type = (optimized_type == tls::TLSOPT_TO_IE
2796                                    ? GOT_TYPE_TLS_OFFSET
2797                                    : GOT_TYPE_TLS_PAIR);
2798           if (gsym != NULL)
2799             {
2800               gold_assert(gsym->has_got_offset(got_type));
2801               value = gsym->got_offset(got_type);
2802             }
2803           else
2804             {
2805               unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
2806               gold_assert(object->local_has_got_offset(r_sym, got_type));
2807               value = object->local_got_offset(r_sym, got_type);
2808             }
2809           if (optimized_type == tls::TLSOPT_TO_IE)
2810             {
2811               Insntype* wv = reinterpret_cast<Insntype*>(view);
2812               Insntype val;
2813
2814               switch (r_type)
2815                 {
2816                 case elfcpp::R_SPARC_TLS_GD_HI22:
2817                   // TLS_GD_HI22 --> TLS_IE_HI22
2818                   Reloc::hi22(view, value, addend);
2819                   break;
2820
2821                 case elfcpp::R_SPARC_TLS_GD_LO10:
2822                   // TLS_GD_LO10 --> TLS_IE_LO10
2823                   Reloc::lo10(view, value, addend);
2824                   break;
2825
2826                 case elfcpp::R_SPARC_TLS_GD_ADD:
2827                   // add %reg1, %reg2, %reg3 --> ld [%reg1 + %reg2], %reg3
2828                   val = elfcpp::Swap<32, true>::readval(wv);
2829
2830                   if (size == 64)
2831                     val |= 0xc0580000;
2832                   else
2833                     val |= 0xc0000000;
2834
2835                   elfcpp::Swap<32, true>::writeval(wv, val);
2836                   break;
2837
2838                 case elfcpp::R_SPARC_TLS_GD_CALL:
2839                   // The compiler can put the TLS_GD_ADD instruction
2840                   // into the delay slot of the call.  If so, we need
2841                   // to transpose the two instructions so that the
2842                   // the new sequence works properly.
2843                   //
2844                   // The test we use is if the instruction in the
2845                   // delay slot is an add with destination register
2846                   // equal to %o0
2847                   val = elfcpp::Swap<32, true>::readval(wv + 1);
2848                   if ((val & 0x81f80000) == 0x80000000
2849                       && ((val >> 25) & 0x1f) == 0x8)
2850                     {
2851                       if (size == 64)
2852                         val |= 0xc0580000;
2853                       else
2854                         val |= 0xc0000000;
2855
2856                       elfcpp::Swap<32, true>::writeval(wv, val);
2857
2858                       wv += 1;
2859                       this->ignore_gd_add_ = true;
2860                     }
2861
2862                   // call __tls_get_addr --> add %g7, %o0, %o0
2863                   elfcpp::Swap<32, true>::writeval(wv, 0x9001c008);
2864                   break;
2865                 }
2866               break;
2867             }
2868           else if (optimized_type == tls::TLSOPT_NONE)
2869             {
2870               switch (r_type)
2871                 {
2872                 case elfcpp::R_SPARC_TLS_GD_HI22:
2873                   Reloc::hi22(view, value, addend);
2874                   break;
2875                 case elfcpp::R_SPARC_TLS_GD_LO10:
2876                   Reloc::lo10(view, value, addend);
2877                   break;
2878                 case elfcpp::R_SPARC_TLS_GD_ADD:
2879                   break;
2880                 case elfcpp::R_SPARC_TLS_GD_CALL:
2881                   {
2882                     Symbol_value<size> symval;
2883                     elfcpp::Elf_Xword value;
2884                     Symbol* tsym;
2885
2886                     tsym = target->tls_get_addr_sym_;
2887                     gold_assert(tsym);
2888                     value = (target->plt_section()->address() +
2889                              tsym->plt_offset());
2890                     symval.set_output_value(value);
2891                     Reloc::wdisp30(view, object, &symval, addend, address);
2892                   }
2893                   break;
2894                 }
2895               break;
2896             }
2897         }
2898       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2899                              _("unsupported reloc %u"),
2900                              r_type);
2901       break;
2902
2903     case elfcpp::R_SPARC_TLS_LDM_HI22:
2904     case elfcpp::R_SPARC_TLS_LDM_LO10:
2905     case elfcpp::R_SPARC_TLS_LDM_ADD:
2906     case elfcpp::R_SPARC_TLS_LDM_CALL:
2907       if (optimized_type == tls::TLSOPT_TO_LE)
2908         {
2909           Insntype* wv = reinterpret_cast<Insntype*>(view);
2910
2911           switch (r_type)
2912             {
2913             case elfcpp::R_SPARC_TLS_LDM_HI22:
2914             case elfcpp::R_SPARC_TLS_LDM_LO10:
2915             case elfcpp::R_SPARC_TLS_LDM_ADD:
2916               elfcpp::Swap<32, true>::writeval(wv, sparc_nop);
2917               break;
2918
2919             case elfcpp::R_SPARC_TLS_LDM_CALL:
2920               elfcpp::Swap<32, true>::writeval(wv, sparc_mov_g0_o0);
2921               break;
2922             }
2923           break;
2924         }
2925       else if (optimized_type == tls::TLSOPT_NONE)
2926         {
2927           // Relocate the field with the offset of the GOT entry for
2928           // the module index.
2929           unsigned int got_offset;
2930
2931           got_offset = target->got_mod_index_entry(NULL, NULL, NULL);
2932           switch (r_type)
2933             {
2934             case elfcpp::R_SPARC_TLS_LDM_HI22:
2935               Reloc::hi22(view, got_offset, addend);
2936               break;
2937             case elfcpp::R_SPARC_TLS_LDM_LO10:
2938               Reloc::lo10(view, got_offset, addend);
2939               break;
2940             case elfcpp::R_SPARC_TLS_LDM_ADD:
2941               break;
2942             case elfcpp::R_SPARC_TLS_LDM_CALL:
2943               {
2944                 Symbol_value<size> symval;
2945                 elfcpp::Elf_Xword value;
2946                 Symbol* tsym;
2947
2948                 tsym = target->tls_get_addr_sym_;
2949                 gold_assert(tsym);
2950                 value = (target->plt_section()->address() +
2951                          tsym->plt_offset());
2952                 symval.set_output_value(value);
2953                 Reloc::wdisp30(view, object, &symval, addend, address);
2954               }
2955               break;
2956             }
2957           break;
2958         }
2959       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
2960                              _("unsupported reloc %u"),
2961                              r_type);
2962       break;
2963
2964       // These relocs can appear in debugging sections, in which case
2965       // we won't see the TLS_LDM relocs.  The local_dynamic_type
2966       // field tells us this.
2967     case elfcpp::R_SPARC_TLS_LDO_HIX22:
2968       if (optimized_type == tls::TLSOPT_TO_LE)
2969         {
2970           value -= tls_segment->memsz();
2971           Reloc::hix22(view, value, addend);
2972         }
2973       else
2974         Reloc::ldo_hix22(view, value, addend);
2975       break;
2976     case elfcpp::R_SPARC_TLS_LDO_LOX10:
2977       if (optimized_type == tls::TLSOPT_TO_LE)
2978         {
2979           value -= tls_segment->memsz();
2980           Reloc::lox10(view, value, addend);
2981         }
2982       else
2983         Reloc::ldo_lox10(view, value, addend);
2984       break;
2985     case elfcpp::R_SPARC_TLS_LDO_ADD:
2986       if (optimized_type == tls::TLSOPT_TO_LE)
2987         {
2988           Insntype* wv = reinterpret_cast<Insntype*>(view);
2989           Insntype val;
2990
2991           // add %reg1, %reg2, %reg3 --> add %g7, %reg2, %reg3
2992           val = elfcpp::Swap<32, true>::readval(wv);
2993           val = (val & ~0x7c000) | 0x1c000;
2994           elfcpp::Swap<32, true>::writeval(wv, val);
2995         }
2996       break;
2997
2998       // When optimizing IE --> LE, the only relocation that is handled
2999       // differently is R_SPARC_TLS_IE_LD, it is rewritten from
3000       // 'ld{,x} [rs1 + rs2], rd' into 'mov rs2, rd' or simply a NOP is
3001       // rs2 and rd are the same.
3002     case elfcpp::R_SPARC_TLS_IE_LD:
3003     case elfcpp::R_SPARC_TLS_IE_LDX:
3004       if (optimized_type == tls::TLSOPT_TO_LE)
3005         {
3006           Insntype* wv = reinterpret_cast<Insntype*>(view);
3007           Insntype val = elfcpp::Swap<32, true>::readval(wv);
3008           Insntype rs2 = val & 0x1f;
3009           Insntype rd = (val >> 25) & 0x1f;
3010
3011           if (rs2 == rd)
3012             val = sparc_nop;
3013           else
3014             val = sparc_mov | (val & 0x3e00001f);
3015
3016           elfcpp::Swap<32, true>::writeval(wv, val);
3017         }
3018       break;
3019
3020     case elfcpp::R_SPARC_TLS_IE_HI22:
3021     case elfcpp::R_SPARC_TLS_IE_LO10:
3022       if (optimized_type == tls::TLSOPT_TO_LE)
3023         {
3024           value -= tls_segment->memsz();
3025           switch (r_type)
3026             {
3027             case elfcpp::R_SPARC_TLS_IE_HI22:
3028               // IE_HI22 --> LE_HIX22
3029               Reloc::hix22(view, value, addend);
3030               break;
3031             case elfcpp::R_SPARC_TLS_IE_LO10:
3032               // IE_LO10 --> LE_LOX10
3033               Reloc::lox10(view, value, addend);
3034               break;
3035             }
3036           break;
3037         }
3038       else if (optimized_type == tls::TLSOPT_NONE)
3039         {
3040           // Relocate the field with the offset of the GOT entry for
3041           // the tp-relative offset of the symbol.
3042           if (gsym != NULL)
3043             {
3044               gold_assert(gsym->has_got_offset(GOT_TYPE_TLS_OFFSET));
3045               value = gsym->got_offset(GOT_TYPE_TLS_OFFSET);
3046             }
3047           else
3048             {
3049               unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
3050               gold_assert(object->local_has_got_offset(r_sym,
3051                                                        GOT_TYPE_TLS_OFFSET));
3052               value = object->local_got_offset(r_sym,
3053                                                GOT_TYPE_TLS_OFFSET);
3054             }
3055           switch (r_type)
3056             {
3057             case elfcpp::R_SPARC_TLS_IE_HI22:
3058               Reloc::hi22(view, value, addend);
3059               break;
3060             case elfcpp::R_SPARC_TLS_IE_LO10:
3061               Reloc::lo10(view, value, addend);
3062               break;
3063             }
3064           break;
3065         }
3066       gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
3067                              _("unsupported reloc %u"),
3068                              r_type);
3069       break;
3070
3071     case elfcpp::R_SPARC_TLS_IE_ADD:
3072       // This seems to be mainly so that we can find the addition
3073       // instruction if there is one.  There doesn't seem to be any
3074       // actual relocation to apply.
3075       break;
3076
3077     case elfcpp::R_SPARC_TLS_LE_HIX22:
3078       // If we're creating a shared library, a dynamic relocation will
3079       // have been created for this location, so do not apply it now.
3080       if (!parameters->options().shared())
3081         {
3082           value -= tls_segment->memsz();
3083           Reloc::hix22(view, value, addend);
3084         }
3085       break;
3086
3087     case elfcpp::R_SPARC_TLS_LE_LOX10:
3088       // If we're creating a shared library, a dynamic relocation will
3089       // have been created for this location, so do not apply it now.
3090       if (!parameters->options().shared())
3091         {
3092           value -= tls_segment->memsz();
3093           Reloc::lox10(view, value, addend);
3094         }
3095       break;
3096     }
3097 }
3098
3099 // Relocate section data.
3100
3101 template<int size, bool big_endian>
3102 void
3103 Target_sparc<size, big_endian>::relocate_section(
3104                         const Relocate_info<size, big_endian>* relinfo,
3105                         unsigned int sh_type,
3106                         const unsigned char* prelocs,
3107                         size_t reloc_count,
3108                         Output_section* output_section,
3109                         bool needs_special_offset_handling,
3110                         unsigned char* view,
3111                         typename elfcpp::Elf_types<size>::Elf_Addr address,
3112                         section_size_type view_size,
3113                         const Reloc_symbol_changes* reloc_symbol_changes)
3114 {
3115   typedef Target_sparc<size, big_endian> Sparc;
3116   typedef typename Target_sparc<size, big_endian>::Relocate Sparc_relocate;
3117
3118   gold_assert(sh_type == elfcpp::SHT_RELA);
3119
3120   gold::relocate_section<size, big_endian, Sparc, elfcpp::SHT_RELA,
3121     Sparc_relocate>(
3122     relinfo,
3123     this,
3124     prelocs,
3125     reloc_count,
3126     output_section,
3127     needs_special_offset_handling,
3128     view,
3129     address,
3130     view_size,
3131     reloc_symbol_changes);
3132 }
3133
3134 // Return the size of a relocation while scanning during a relocatable
3135 // link.
3136
3137 template<int size, bool big_endian>
3138 unsigned int
3139 Target_sparc<size, big_endian>::Relocatable_size_for_reloc::get_size_for_reloc(
3140     unsigned int,
3141     Relobj*)
3142 {
3143   // We are always SHT_RELA, so we should never get here.
3144   gold_unreachable();
3145   return 0;
3146 }
3147
3148 // Scan the relocs during a relocatable link.
3149
3150 template<int size, bool big_endian>
3151 void
3152 Target_sparc<size, big_endian>::scan_relocatable_relocs(
3153                         Symbol_table* symtab,
3154                         Layout* layout,
3155                         Sized_relobj<size, big_endian>* object,
3156                         unsigned int data_shndx,
3157                         unsigned int sh_type,
3158                         const unsigned char* prelocs,
3159                         size_t reloc_count,
3160                         Output_section* output_section,
3161                         bool needs_special_offset_handling,
3162                         size_t local_symbol_count,
3163                         const unsigned char* plocal_symbols,
3164                         Relocatable_relocs* rr)
3165 {
3166   gold_assert(sh_type == elfcpp::SHT_RELA);
3167
3168   typedef gold::Default_scan_relocatable_relocs<elfcpp::SHT_RELA,
3169     Relocatable_size_for_reloc> Scan_relocatable_relocs;
3170
3171   gold::scan_relocatable_relocs<size, big_endian, elfcpp::SHT_RELA,
3172       Scan_relocatable_relocs>(
3173     symtab,
3174     layout,
3175     object,
3176     data_shndx,
3177     prelocs,
3178     reloc_count,
3179     output_section,
3180     needs_special_offset_handling,
3181     local_symbol_count,
3182     plocal_symbols,
3183     rr);
3184 }
3185
3186 // Relocate a section during a relocatable link.
3187
3188 template<int size, bool big_endian>
3189 void
3190 Target_sparc<size, big_endian>::relocate_for_relocatable(
3191     const Relocate_info<size, big_endian>* relinfo,
3192     unsigned int sh_type,
3193     const unsigned char* prelocs,
3194     size_t reloc_count,
3195     Output_section* output_section,
3196     off_t offset_in_output_section,
3197     const Relocatable_relocs* rr,
3198     unsigned char* view,
3199     typename elfcpp::Elf_types<size>::Elf_Addr view_address,
3200     section_size_type view_size,
3201     unsigned char* reloc_view,
3202     section_size_type reloc_view_size)
3203 {
3204   gold_assert(sh_type == elfcpp::SHT_RELA);
3205
3206   gold::relocate_for_relocatable<size, big_endian, elfcpp::SHT_RELA>(
3207     relinfo,
3208     prelocs,
3209     reloc_count,
3210     output_section,
3211     offset_in_output_section,
3212     rr,
3213     view,
3214     view_address,
3215     view_size,
3216     reloc_view,
3217     reloc_view_size);
3218 }
3219
3220 // Return the value to use for a dynamic which requires special
3221 // treatment.  This is how we support equality comparisons of function
3222 // pointers across shared library boundaries, as described in the
3223 // processor specific ABI supplement.
3224
3225 template<int size, bool big_endian>
3226 uint64_t
3227 Target_sparc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const
3228 {
3229   gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset());
3230   return this->plt_section()->address() + gsym->plt_offset();
3231 }
3232
3233 // The selector for sparc object files.
3234
3235 template<int size, bool big_endian>
3236 class Target_selector_sparc : public Target_selector
3237 {
3238 public:
3239   Target_selector_sparc()
3240     : Target_selector(elfcpp::EM_NONE, size, big_endian,
3241                       (size == 64 ? "elf64-sparc" : "elf32-sparc"))
3242   { }
3243
3244   Target* do_recognize(int machine, int, int)
3245   {
3246     switch (size)
3247       {
3248       case 64:
3249         if (machine != elfcpp::EM_SPARCV9)
3250           return NULL;
3251         break;
3252
3253       case 32:
3254         if (machine != elfcpp::EM_SPARC
3255             && machine != elfcpp::EM_SPARC32PLUS)
3256           return NULL;
3257         break;
3258
3259       default:
3260         return NULL;
3261       }
3262
3263     return this->instantiate_target();
3264   }
3265
3266   Target* do_instantiate_target()
3267   { return new Target_sparc<size, big_endian>(); }
3268 };
3269
3270 Target_selector_sparc<32, true> target_selector_sparc32;
3271 Target_selector_sparc<64, true> target_selector_sparc64;
3272
3273 } // End anonymous namespace.